Adding upstream version 5:7.2.4.upstream/5%7.2.4upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

468 files changed, 126205 insertions, 0 deletions

diff --git a/deps/jemalloc/.appveyor.yml b/deps/jemalloc/.appveyor.yml
new file mode 100644
index 0000000..d31f9ae
--- /dev/null
+++ b/deps/jemalloc/.appveyor.yml
@@ -0,0 +1,41 @@
+version: '{build}'
+
+environment:
+  matrix:
+  - MSYSTEM: MINGW64
+    CPU: x86_64
+    MSVC: amd64
+    CONFIG_FLAGS: --enable-debug
+  - MSYSTEM: MINGW64
+    CPU: x86_64
+    CONFIG_FLAGS: --enable-debug
+  - MSYSTEM: MINGW32
+    CPU: i686
+    MSVC: x86
+    CONFIG_FLAGS: --enable-debug
+  - MSYSTEM: MINGW32
+    CPU: i686
+    CONFIG_FLAGS: --enable-debug
+  - MSYSTEM: MINGW64
+    CPU: x86_64
+    MSVC: amd64
+  - MSYSTEM: MINGW64
+    CPU: x86_64
+  - MSYSTEM: MINGW32
+    CPU: i686
+    MSVC: x86
+  - MSYSTEM: MINGW32
+    CPU: i686
+
+install:
+  - set PATH=c:\msys64\%MSYSTEM%\bin;c:\msys64\usr\bin;%PATH%
+  - if defined MSVC call "c:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\vcvarsall.bat" %MSVC%
+  - if defined MSVC pacman --noconfirm -Rsc mingw-w64-%CPU%-gcc gcc
+
+build_script:
+  - bash -c "autoconf"
+  - bash -c "./configure $CONFIG_FLAGS"
+  - mingw32-make
+  - file lib/jemalloc.dll
+  - mingw32-make tests
+  - mingw32-make -k check
diff --git a/deps/jemalloc/.autom4te.cfg b/deps/jemalloc/.autom4te.cfg
new file mode 100644
index 0000000..fe2424d
--- /dev/null
+++ b/deps/jemalloc/.autom4te.cfg
@@ -0,0 +1,3 @@
+begin-language: "Autoconf-without-aclocal-m4"
+args: --no-cache
+end-language: "Autoconf-without-aclocal-m4"
diff --git a/deps/jemalloc/.cirrus.yml b/deps/jemalloc/.cirrus.yml
new file mode 100644
index 0000000..7569539
--- /dev/null
+++ b/deps/jemalloc/.cirrus.yml
@@ -0,0 +1,46 @@
+env:
+  CIRRUS_CLONE_DEPTH: 1
+  ARCH: amd64
+
+task:
+  matrix:
+      env:
+        DEBUG_CONFIG: --enable-debug
+      env:
+        DEBUG_CONFIG: --disable-debug
+  matrix:
+    - env:
+        PROF_CONFIG: --enable-prof
+    - env:
+        PROF_CONFIG: --disable-prof
+  matrix:
+    - name: 64-bit
+      env:
+        CC:
+        CXX:
+    - name: 32-bit
+      env:
+        CC: cc -m32
+        CXX: c++ -m32
+  matrix:
+    - env:
+        UNCOMMON_CONFIG:
+    - env:
+        UNCOMMON_CONFIG: --with-lg-page=16 --with-malloc-conf=tcache:false
+  freebsd_instance:
+    matrix:
+      image: freebsd-12-3-release-amd64
+  install_script:
+    - sed -i.bak -e 's,pkg+http://pkg.FreeBSD.org/\${ABI}/quarterly,pkg+http://pkg.FreeBSD.org/\${ABI}/latest,' /etc/pkg/FreeBSD.conf
+    - pkg upgrade -y
+    - pkg install -y autoconf gmake
+  script:
+    - autoconf
+    # We don't perfectly track freebsd stdlib.h definitions.  This is fine when
+    # we count as a system header, but breaks otherwise, like during these
+    # tests.
+    - ./configure --with-jemalloc-prefix=ci_ ${DEBUG_CONFIG} ${PROF_CONFIG} ${UNCOMMON_CONFIG}
+    - export JFLAG=`sysctl -n kern.smp.cpus`
+    - gmake -j${JFLAG}
+    - gmake -j${JFLAG} tests
+    - gmake check
diff --git a/deps/jemalloc/.clang-format b/deps/jemalloc/.clang-format
new file mode 100644
index 0000000..719c03c
--- /dev/null
+++ b/deps/jemalloc/.clang-format
@@ -0,0 +1,122 @@
+# jemalloc targets clang-format version 8.  We include every option it supports
+# here, but comment out the ones that aren't relevant for us.
+---
+# AccessModifierOffset: -2
+AlignAfterOpenBracket: DontAlign
+AlignConsecutiveAssignments: false
+AlignConsecutiveDeclarations: false
+AlignEscapedNewlines: Right
+AlignOperands: false
+AlignTrailingComments: false
+AllowAllParametersOfDeclarationOnNextLine: true
+AllowShortBlocksOnASingleLine: false
+AllowShortCaseLabelsOnASingleLine: false
+AllowShortFunctionsOnASingleLine: Empty
+AllowShortIfStatementsOnASingleLine: false
+AllowShortLoopsOnASingleLine: false
+AlwaysBreakAfterReturnType: AllDefinitions
+AlwaysBreakBeforeMultilineStrings: true
+# AlwaysBreakTemplateDeclarations: Yes
+BinPackArguments: true
+BinPackParameters: true
+BraceWrapping:
+  AfterClass: false
+  AfterControlStatement: false
+  AfterEnum: false
+  AfterFunction: false
+  AfterNamespace: false
+  AfterObjCDeclaration: false
+  AfterStruct: false
+  AfterUnion: false
+  BeforeCatch: false
+  BeforeElse: false
+  IndentBraces: false
+# BreakAfterJavaFieldAnnotations: true
+BreakBeforeBinaryOperators: NonAssignment
+BreakBeforeBraces: Attach
+BreakBeforeTernaryOperators: true
+# BreakConstructorInitializers: BeforeColon
+# BreakInheritanceList: BeforeColon
+BreakStringLiterals: false
+ColumnLimit: 80
+# CommentPragmas: ''
+# CompactNamespaces: true
+# ConstructorInitializerAllOnOneLineOrOnePerLine: true
+# ConstructorInitializerIndentWidth: 4
+ContinuationIndentWidth: 2
+Cpp11BracedListStyle: true
+DerivePointerAlignment: false
+DisableFormat:   false
+ExperimentalAutoDetectBinPacking: false
+FixNamespaceComments: true
+ForEachMacros:   [ ql_foreach, qr_foreach, ]
+# IncludeBlocks: Preserve
+# IncludeCategories:
+#   - Regex:           '^<.*\.h(pp)?>'
+#     Priority:        1
+# IncludeIsMainRegex: ''
+IndentCaseLabels: false
+IndentPPDirectives: AfterHash
+IndentWidth: 4
+IndentWrappedFunctionNames: false
+# JavaImportGroups: []
+# JavaScriptQuotes: Leave
+# JavaScriptWrapImports: True
+KeepEmptyLinesAtTheStartOfBlocks: false
+Language: Cpp
+MacroBlockBegin: ''
+MacroBlockEnd: ''
+MaxEmptyLinesToKeep: 1
+# NamespaceIndentation: None
+# ObjCBinPackProtocolList: Auto
+# ObjCBlockIndentWidth: 2
+# ObjCSpaceAfterProperty: false
+# ObjCSpaceBeforeProtocolList: false
+
+PenaltyBreakAssignment: 2
+PenaltyBreakBeforeFirstCallParameter: 1
+PenaltyBreakComment: 300
+PenaltyBreakFirstLessLess: 120
+PenaltyBreakString: 1000
+# PenaltyBreakTemplateDeclaration: 10
+PenaltyExcessCharacter: 1000000
+PenaltyReturnTypeOnItsOwnLine: 60
+PointerAlignment: Right
+# RawStringFormats:
+#   - Language: TextProto
+#       Delimiters:
+#         - 'pb'
+#         - 'proto'
+#       EnclosingFunctions:
+#         - 'PARSE_TEXT_PROTO'
+#       BasedOnStyle: google
+#   - Language: Cpp
+#       Delimiters:
+#         - 'cc'
+#         - 'cpp'
+#       BasedOnStyle: llvm
+#       CanonicalDelimiter: 'cc'
+ReflowComments: true
+SortIncludes: false
+SpaceAfterCStyleCast: false
+# SpaceAfterTemplateKeyword: true
+SpaceBeforeAssignmentOperators: true
+# SpaceBeforeCpp11BracedList: false
+# SpaceBeforeCtorInitializerColon: true
+# SpaceBeforeInheritanceColon: true
+SpaceBeforeParens: ControlStatements
+# SpaceBeforeRangeBasedForLoopColon: true
+SpaceInEmptyParentheses: false
+SpacesBeforeTrailingComments: 2
+SpacesInAngles:  false
+SpacesInCStyleCastParentheses: false
+# SpacesInContainerLiterals: false
+SpacesInParentheses: false
+SpacesInSquareBrackets: false
+# Standard: Cpp11
+# This is nominally supported in clang-format version 8, but not in the build
+# used by some of the core jemalloc developers.
+# StatementMacros: []
+TabWidth: 8
+UseTab: Never
+...
diff --git a/deps/jemalloc/.gitattributes b/deps/jemalloc/.gitattributes
new file mode 100644
index 0000000..6313b56
--- /dev/null
+++ b/deps/jemalloc/.gitattributes
@@ -0,0 +1 @@
+* text=auto eol=lf
diff --git a/deps/jemalloc/.gitignore b/deps/jemalloc/.gitignore
new file mode 100644
index 0000000..1c0b338
--- /dev/null
+++ b/deps/jemalloc/.gitignore
@@ -0,0 +1,100 @@
+/bin/jemalloc-config
+/bin/jemalloc.sh
+/bin/jeprof
+
+/config.stamp
+/config.log
+/config.status
+/configure
+
+/doc/html.xsl
+/doc/manpages.xsl
+/doc/jemalloc.xml
+/doc/jemalloc.html
+/doc/jemalloc.3
+
+/doc_internal/PROFILING_INTERNALS.pdf
+
+/jemalloc.pc
+
+/lib/
+
+/Makefile
+
+/include/jemalloc/internal/jemalloc_preamble.h
+/include/jemalloc/internal/jemalloc_internal_defs.h
+/include/jemalloc/internal/private_namespace.gen.h
+/include/jemalloc/internal/private_namespace.h
+/include/jemalloc/internal/private_namespace_jet.gen.h
+/include/jemalloc/internal/private_namespace_jet.h
+/include/jemalloc/internal/private_symbols.awk
+/include/jemalloc/internal/private_symbols_jet.awk
+/include/jemalloc/internal/public_namespace.h
+/include/jemalloc/internal/public_symbols.txt
+/include/jemalloc/internal/public_unnamespace.h
+/include/jemalloc/jemalloc.h
+/include/jemalloc/jemalloc_defs.h
+/include/jemalloc/jemalloc_macros.h
+/include/jemalloc/jemalloc_mangle.h
+/include/jemalloc/jemalloc_mangle_jet.h
+/include/jemalloc/jemalloc_protos.h
+/include/jemalloc/jemalloc_protos_jet.h
+/include/jemalloc/jemalloc_rename.h
+/include/jemalloc/jemalloc_typedefs.h
+
+/src/*.[od]
+/src/*.sym
+
+/run_tests.out/
+
+/test/test.sh
+test/include/test/jemalloc_test.h
+test/include/test/jemalloc_test_defs.h
+
+/test/integration/[A-Za-z]*
+!/test/integration/cpp/
+!/test/integration/[A-Za-z]*.*
+/test/integration/*.[od]
+/test/integration/*.out
+
+/test/integration/cpp/[A-Za-z]*
+!/test/integration/cpp/[A-Za-z]*.*
+/test/integration/cpp/*.[od]
+/test/integration/cpp/*.out
+
+/test/src/*.[od]
+
+/test/stress/[A-Za-z]*
+!/test/stress/[A-Za-z]*.*
+/test/stress/*.[od]
+/test/stress/*.out
+
+/test/unit/[A-Za-z]*
+!/test/unit/[A-Za-z]*.*
+/test/unit/*.[od]
+/test/unit/*.out
+
+/test/analyze/[A-Za-z]*
+!/test/analyze/[A-Za-z]*.*
+/test/analyze/*.[od]
+/test/analyze/*.out
+
+/VERSION
+
+*.pdb
+*.sdf
+*.opendb
+*.VC.db
+*.opensdf
+*.cachefile
+*.suo
+*.user
+*.sln.docstates
+*.tmp
+.vs/
+/msvc/Win32/
+/msvc/x64/
+/msvc/projects/*/*/Debug*/
+/msvc/projects/*/*/Release*/
+/msvc/projects/*/*/Win32/
+/msvc/projects/*/*/x64/
diff --git a/deps/jemalloc/.travis.yml b/deps/jemalloc/.travis.yml
new file mode 100644
index 0000000..bf44fad
--- /dev/null
+++ b/deps/jemalloc/.travis.yml
@@ -0,0 +1,413 @@
+# This config file is generated by ./scripts/gen_travis.py.
+# Do not edit by hand.
+
+# We use 'minimal', because 'generic' makes Windows VMs hang at startup. Also
+# the software provided by 'generic' is simply not needed for our tests.
+# Differences are explained here:
+# https://docs.travis-ci.com/user/languages/minimal-and-generic/
+language: minimal
+dist: focal
+
+jobs:
+  include:
+    - os: windows
+      arch: amd64
+      env: CC=gcc CXX=g++ EXTRA_CFLAGS="-fcommon"
+    - os: windows
+      arch: amd64
+      env: CC=gcc CXX=g++ CONFIGURE_FLAGS="--enable-debug" EXTRA_CFLAGS="-fcommon"
+    - os: windows
+      arch: amd64
+      env: CC=cl.exe CXX=cl.exe
+    - os: windows
+      arch: amd64
+      env: CC=gcc CXX=g++ CROSS_COMPILE_32BIT=yes EXTRA_CFLAGS="-fcommon"
+    - os: windows
+      arch: amd64
+      env: CC=cl.exe CXX=cl.exe CONFIGURE_FLAGS="--enable-debug"
+    - os: windows
+      arch: amd64
+      env: CC=gcc CXX=g++ CROSS_COMPILE_32BIT=yes CONFIGURE_FLAGS="--enable-debug" EXTRA_CFLAGS="-fcommon"
+    - os: windows
+      arch: amd64
+      env: CC=cl.exe CXX=cl.exe CROSS_COMPILE_32BIT=yes
+    - os: windows
+      arch: amd64
+      env: CC=cl.exe CXX=cl.exe CROSS_COMPILE_32BIT=yes CONFIGURE_FLAGS="--enable-debug"
+    - os: freebsd
+      arch: amd64
+      env: CC=gcc CXX=g++
+    - os: freebsd
+      arch: amd64
+      env: CC=gcc CXX=g++ CONFIGURE_FLAGS="--enable-debug"
+    - os: freebsd
+      arch: amd64
+      env: CC=gcc CXX=g++ CONFIGURE_FLAGS="--enable-prof --enable-prof-libunwind"
+    - os: freebsd
+      arch: amd64
+      env: CC=gcc CXX=g++ CONFIGURE_FLAGS="--with-lg-page=16 --with-malloc-conf=tcache:false"
+    - os: freebsd
+      arch: amd64
+      env: CC=gcc CXX=g++ CROSS_COMPILE_32BIT=yes
+    - os: freebsd
+      arch: amd64
+      env: CC=gcc CXX=g++ CONFIGURE_FLAGS="--enable-debug --enable-prof --enable-prof-libunwind"
+    - os: freebsd
+      arch: amd64
+      env: CC=gcc CXX=g++ CONFIGURE_FLAGS="--enable-debug --with-lg-page=16 --with-malloc-conf=tcache:false"
+    - os: freebsd
+      arch: amd64
+      env: CC=gcc CXX=g++ CROSS_COMPILE_32BIT=yes CONFIGURE_FLAGS="--enable-debug"
+    - os: freebsd
+      arch: amd64
+      env: CC=gcc CXX=g++ CONFIGURE_FLAGS="--enable-prof --enable-prof-libunwind --with-lg-page=16 --with-malloc-conf=tcache:false"
+    - os: freebsd
+      arch: amd64
+      env: CC=gcc CXX=g++ CROSS_COMPILE_32BIT=yes CONFIGURE_FLAGS="--enable-prof --enable-prof-libunwind"
+    - os: freebsd
+      arch: amd64
+      env: CC=gcc CXX=g++ CROSS_COMPILE_32BIT=yes CONFIGURE_FLAGS="--with-lg-page=16 --with-malloc-conf=tcache:false"
+    - os: freebsd
+      arch: amd64
+      env: CC=gcc CXX=g++ CONFIGURE_FLAGS="--enable-debug --enable-prof --enable-prof-libunwind --with-lg-page=16 --with-malloc-conf=tcache:false"
+    - os: freebsd
+      arch: amd64
+      env: CC=gcc CXX=g++ CROSS_COMPILE_32BIT=yes CONFIGURE_FLAGS="--enable-debug --enable-prof --enable-prof-libunwind"
+    - os: freebsd
+      arch: amd64
+      env: CC=gcc CXX=g++ CROSS_COMPILE_32BIT=yes CONFIGURE_FLAGS="--enable-debug --with-lg-page=16 --with-malloc-conf=tcache:false"
+    - os: freebsd
+      arch: amd64
+      env: CC=gcc CXX=g++ CROSS_COMPILE_32BIT=yes CONFIGURE_FLAGS="--enable-prof --enable-prof-libunwind --with-lg-page=16 --with-malloc-conf=tcache:false"
+    - os: freebsd
+      arch: amd64
+      env: CC=gcc CXX=g++ CROSS_COMPILE_32BIT=yes CONFIGURE_FLAGS="--enable-debug --enable-prof --enable-prof-libunwind --with-lg-page=16 --with-malloc-conf=tcache:false"
+    - os: linux
+      arch: amd64
+      env: CC=gcc CXX=g++ EXTRA_CFLAGS="-Werror -Wno-array-bounds"
+    - os: linux
+      arch: amd64
+      env: CC=clang CXX=clang++ EXTRA_CFLAGS="-Werror -Wno-array-bounds -Wno-unknown-warning-option -Wno-ignored-attributes"
+    - os: linux
+      arch: amd64
+      env: CC=gcc CXX=g++ CROSS_COMPILE_32BIT=yes COMPILER_FLAGS="-m32" EXTRA_CFLAGS="-Werror -Wno-array-bounds"
+    - os: linux
+      arch: amd64
+      env: CC=gcc CXX=g++ CONFIGURE_FLAGS="--enable-debug" EXTRA_CFLAGS="-Werror -Wno-array-bounds"
+    - os: linux
+      arch: amd64
+      env: CC=gcc CXX=g++ CONFIGURE_FLAGS="--enable-prof" EXTRA_CFLAGS="-Werror -Wno-array-bounds"
+    - os: linux
+      arch: amd64
+      env: CC=gcc CXX=g++ CONFIGURE_FLAGS="--disable-stats" EXTRA_CFLAGS="-Werror -Wno-array-bounds"
+    - os: linux
+      arch: amd64
+      env: CC=gcc CXX=g++ CONFIGURE_FLAGS="--disable-libdl" EXTRA_CFLAGS="-Werror -Wno-array-bounds"
+    - os: linux
+      arch: amd64
+      env: CC=gcc CXX=g++ CONFIGURE_FLAGS="--enable-opt-safety-checks" EXTRA_CFLAGS="-Werror -Wno-array-bounds"
+    - os: linux
+      arch: amd64
+      env: CC=gcc CXX=g++ CONFIGURE_FLAGS="--with-lg-page=16" EXTRA_CFLAGS="-Werror -Wno-array-bounds"
+    - os: linux
+      arch: amd64
+      env: CC=gcc CXX=g++ CONFIGURE_FLAGS="--with-malloc-conf=tcache:false" EXTRA_CFLAGS="-Werror -Wno-array-bounds"
+    - os: linux
+      arch: amd64
+      env: CC=gcc CXX=g++ CONFIGURE_FLAGS="--with-malloc-conf=dss:primary" EXTRA_CFLAGS="-Werror -Wno-array-bounds"
+    - os: linux
+      arch: amd64
+      env: CC=gcc CXX=g++ CONFIGURE_FLAGS="--with-malloc-conf=percpu_arena:percpu" EXTRA_CFLAGS="-Werror -Wno-array-bounds"
+    - os: linux
+      arch: amd64
+      env: CC=gcc CXX=g++ CONFIGURE_FLAGS="--with-malloc-conf=background_thread:true" EXTRA_CFLAGS="-Werror -Wno-array-bounds"
+    - os: linux
+      arch: amd64
+      env: CC=clang CXX=clang++ CROSS_COMPILE_32BIT=yes COMPILER_FLAGS="-m32" EXTRA_CFLAGS="-Werror -Wno-array-bounds -Wno-unknown-warning-option -Wno-ignored-attributes"
+    - os: linux
+      arch: amd64
+      env: CC=clang CXX=clang++ CONFIGURE_FLAGS="--enable-debug" EXTRA_CFLAGS="-Werror -Wno-array-bounds -Wno-unknown-warning-option -Wno-ignored-attributes"
+    - os: linux
+      arch: amd64
+      env: CC=clang CXX=clang++ CONFIGURE_FLAGS="--enable-prof" EXTRA_CFLAGS="-Werror -Wno-array-bounds -Wno-unknown-warning-option -Wno-ignored-attributes"
+    - os: linux
+      arch: amd64
+      env: CC=clang CXX=clang++ CONFIGURE_FLAGS="--disable-stats" EXTRA_CFLAGS="-Werror -Wno-array-bounds -Wno-unknown-warning-option -Wno-ignored-attributes"
+    - os: linux
+      arch: amd64
+      env: CC=clang CXX=clang++ CONFIGURE_FLAGS="--disable-libdl" EXTRA_CFLAGS="-Werror -Wno-array-bounds -Wno-unknown-warning-option -Wno-ignored-attributes"
+    - os: linux
+      arch: amd64
+      env: CC=clang CXX=clang++ CONFIGURE_FLAGS="--enable-opt-safety-checks" EXTRA_CFLAGS="-Werror -Wno-array-bounds -Wno-unknown-warning-option -Wno-ignored-attributes"
+    - os: linux
+      arch: amd64
+      env: CC=clang CXX=clang++ CONFIGURE_FLAGS="--with-lg-page=16" EXTRA_CFLAGS="-Werror -Wno-array-bounds -Wno-unknown-warning-option -Wno-ignored-attributes"
+    - os: linux
+      arch: amd64
+      env: CC=clang CXX=clang++ CONFIGURE_FLAGS="--with-malloc-conf=tcache:false" EXTRA_CFLAGS="-Werror -Wno-array-bounds -Wno-unknown-warning-option -Wno-ignored-attributes"
+    - os: linux
+      arch: amd64
+      env: CC=clang CXX=clang++ CONFIGURE_FLAGS="--with-malloc-conf=dss:primary" EXTRA_CFLAGS="-Werror -Wno-array-bounds -Wno-unknown-warning-option -Wno-ignored-attributes"
+    - os: linux
+      arch: amd64
+      env: CC=clang CXX=clang++ CONFIGURE_FLAGS="--with-malloc-conf=percpu_arena:percpu" EXTRA_CFLAGS="-Werror -Wno-array-bounds -Wno-unknown-warning-option -Wno-ignored-attributes"
+    - os: linux
+      arch: amd64
+      env: CC=clang CXX=clang++ CONFIGURE_FLAGS="--with-malloc-conf=background_thread:true" EXTRA_CFLAGS="-Werror -Wno-array-bounds -Wno-unknown-warning-option -Wno-ignored-attributes"
+    - os: linux
+      arch: amd64
+      env: CC=gcc CXX=g++ CROSS_COMPILE_32BIT=yes COMPILER_FLAGS="-m32" CONFIGURE_FLAGS="--enable-debug" EXTRA_CFLAGS="-Werror -Wno-array-bounds"
+    - os: linux
+      arch: amd64
+      env: CC=gcc CXX=g++ CROSS_COMPILE_32BIT=yes COMPILER_FLAGS="-m32" CONFIGURE_FLAGS="--enable-prof" EXTRA_CFLAGS="-Werror -Wno-array-bounds"
+    - os: linux
+      arch: amd64
+      env: CC=gcc CXX=g++ CROSS_COMPILE_32BIT=yes COMPILER_FLAGS="-m32" CONFIGURE_FLAGS="--disable-stats" EXTRA_CFLAGS="-Werror -Wno-array-bounds"
+    - os: linux
+      arch: amd64
+      env: CC=gcc CXX=g++ CROSS_COMPILE_32BIT=yes COMPILER_FLAGS="-m32" CONFIGURE_FLAGS="--disable-libdl" EXTRA_CFLAGS="-Werror -Wno-array-bounds"
+    - os: linux
+      arch: amd64
+      env: CC=gcc CXX=g++ CROSS_COMPILE_32BIT=yes COMPILER_FLAGS="-m32" CONFIGURE_FLAGS="--enable-opt-safety-checks" EXTRA_CFLAGS="-Werror -Wno-array-bounds"
+    - os: linux
+      arch: amd64
+      env: CC=gcc CXX=g++ CROSS_COMPILE_32BIT=yes COMPILER_FLAGS="-m32" CONFIGURE_FLAGS="--with-lg-page=16" EXTRA_CFLAGS="-Werror -Wno-array-bounds"
+    - os: linux
+      arch: amd64
+      env: CC=gcc CXX=g++ CROSS_COMPILE_32BIT=yes COMPILER_FLAGS="-m32" CONFIGURE_FLAGS="--with-malloc-conf=tcache:false" EXTRA_CFLAGS="-Werror -Wno-array-bounds"
+    - os: linux
+      arch: amd64
+      env: CC=gcc CXX=g++ CROSS_COMPILE_32BIT=yes COMPILER_FLAGS="-m32" CONFIGURE_FLAGS="--with-malloc-conf=dss:primary" EXTRA_CFLAGS="-Werror -Wno-array-bounds"
+    - os: linux
+      arch: amd64
+      env: CC=gcc CXX=g++ CROSS_COMPILE_32BIT=yes COMPILER_FLAGS="-m32" CONFIGURE_FLAGS="--with-malloc-conf=percpu_arena:percpu" EXTRA_CFLAGS="-Werror -Wno-array-bounds"
+    - os: linux
+      arch: amd64
+      env: CC=gcc CXX=g++ CROSS_COMPILE_32BIT=yes COMPILER_FLAGS="-m32" CONFIGURE_FLAGS="--with-malloc-conf=background_thread:true" EXTRA_CFLAGS="-Werror -Wno-array-bounds"
+    - os: linux
+      arch: amd64
+      env: CC=gcc CXX=g++ CONFIGURE_FLAGS="--enable-debug --enable-prof" EXTRA_CFLAGS="-Werror -Wno-array-bounds"
+    - os: linux
+      arch: amd64
+      env: CC=gcc CXX=g++ CONFIGURE_FLAGS="--enable-debug --disable-stats" EXTRA_CFLAGS="-Werror -Wno-array-bounds"
+    - os: linux
+      arch: amd64
+      env: CC=gcc CXX=g++ CONFIGURE_FLAGS="--enable-debug --disable-libdl" EXTRA_CFLAGS="-Werror -Wno-array-bounds"
+    - os: linux
+      arch: amd64
+      env: CC=gcc CXX=g++ CONFIGURE_FLAGS="--enable-debug --enable-opt-safety-checks" EXTRA_CFLAGS="-Werror -Wno-array-bounds"
+    - os: linux
+      arch: amd64
+      env: CC=gcc CXX=g++ CONFIGURE_FLAGS="--enable-debug --with-lg-page=16" EXTRA_CFLAGS="-Werror -Wno-array-bounds"
+    - os: linux
+      arch: amd64
+      env: CC=gcc CXX=g++ CONFIGURE_FLAGS="--enable-debug --with-malloc-conf=tcache:false" EXTRA_CFLAGS="-Werror -Wno-array-bounds"
+    - os: linux
+      arch: amd64
+      env: CC=gcc CXX=g++ CONFIGURE_FLAGS="--enable-debug --with-malloc-conf=dss:primary" EXTRA_CFLAGS="-Werror -Wno-array-bounds"
+    - os: linux
+      arch: amd64
+      env: CC=gcc CXX=g++ CONFIGURE_FLAGS="--enable-debug --with-malloc-conf=percpu_arena:percpu" EXTRA_CFLAGS="-Werror -Wno-array-bounds"
+    - os: linux
+      arch: amd64
+      env: CC=gcc CXX=g++ CONFIGURE_FLAGS="--enable-debug --with-malloc-conf=background_thread:true" EXTRA_CFLAGS="-Werror -Wno-array-bounds"
+    - os: linux
+      arch: amd64
+      env: CC=gcc CXX=g++ CONFIGURE_FLAGS="--enable-prof --disable-stats" EXTRA_CFLAGS="-Werror -Wno-array-bounds"
+    - os: linux
+      arch: amd64
+      env: CC=gcc CXX=g++ CONFIGURE_FLAGS="--enable-prof --disable-libdl" EXTRA_CFLAGS="-Werror -Wno-array-bounds"
+    - os: linux
+      arch: amd64
+      env: CC=gcc CXX=g++ CONFIGURE_FLAGS="--enable-prof --enable-opt-safety-checks" EXTRA_CFLAGS="-Werror -Wno-array-bounds"
+    - os: linux
+      arch: amd64
+      env: CC=gcc CXX=g++ CONFIGURE_FLAGS="--enable-prof --with-lg-page=16" EXTRA_CFLAGS="-Werror -Wno-array-bounds"
+    - os: linux
+      arch: amd64
+      env: CC=gcc CXX=g++ CONFIGURE_FLAGS="--enable-prof --with-malloc-conf=tcache:false" EXTRA_CFLAGS="-Werror -Wno-array-bounds"
+    - os: linux
+      arch: amd64
+      env: CC=gcc CXX=g++ CONFIGURE_FLAGS="--enable-prof --with-malloc-conf=dss:primary" EXTRA_CFLAGS="-Werror -Wno-array-bounds"
+    - os: linux
+      arch: amd64
+      env: CC=gcc CXX=g++ CONFIGURE_FLAGS="--enable-prof --with-malloc-conf=percpu_arena:percpu" EXTRA_CFLAGS="-Werror -Wno-array-bounds"
+    - os: linux
+      arch: amd64
+      env: CC=gcc CXX=g++ CONFIGURE_FLAGS="--enable-prof --with-malloc-conf=background_thread:true" EXTRA_CFLAGS="-Werror -Wno-array-bounds"
+    - os: linux
+      arch: amd64
+      env: CC=gcc CXX=g++ CONFIGURE_FLAGS="--disable-stats --disable-libdl" EXTRA_CFLAGS="-Werror -Wno-array-bounds"
+    - os: linux
+      arch: amd64
+      env: CC=gcc CXX=g++ CONFIGURE_FLAGS="--disable-stats --enable-opt-safety-checks" EXTRA_CFLAGS="-Werror -Wno-array-bounds"
+    - os: linux
+      arch: amd64
+      env: CC=gcc CXX=g++ CONFIGURE_FLAGS="--disable-stats --with-lg-page=16" EXTRA_CFLAGS="-Werror -Wno-array-bounds"
+    - os: linux
+      arch: amd64
+      env: CC=gcc CXX=g++ CONFIGURE_FLAGS="--disable-stats --with-malloc-conf=tcache:false" EXTRA_CFLAGS="-Werror -Wno-array-bounds"
+    - os: linux
+      arch: amd64
+      env: CC=gcc CXX=g++ CONFIGURE_FLAGS="--disable-stats --with-malloc-conf=dss:primary" EXTRA_CFLAGS="-Werror -Wno-array-bounds"
+    - os: linux
+      arch: amd64
+      env: CC=gcc CXX=g++ CONFIGURE_FLAGS="--disable-stats --with-malloc-conf=percpu_arena:percpu" EXTRA_CFLAGS="-Werror -Wno-array-bounds"
+    - os: linux
+      arch: amd64
+      env: CC=gcc CXX=g++ CONFIGURE_FLAGS="--disable-stats --with-malloc-conf=background_thread:true" EXTRA_CFLAGS="-Werror -Wno-array-bounds"
+    - os: linux
+      arch: amd64
+      env: CC=gcc CXX=g++ CONFIGURE_FLAGS="--disable-libdl --enable-opt-safety-checks" EXTRA_CFLAGS="-Werror -Wno-array-bounds"
+    - os: linux
+      arch: amd64
+      env: CC=gcc CXX=g++ CONFIGURE_FLAGS="--disable-libdl --with-lg-page=16" EXTRA_CFLAGS="-Werror -Wno-array-bounds"
+    - os: linux
+      arch: amd64
+      env: CC=gcc CXX=g++ CONFIGURE_FLAGS="--disable-libdl --with-malloc-conf=tcache:false" EXTRA_CFLAGS="-Werror -Wno-array-bounds"
+    - os: linux
+      arch: amd64
+      env: CC=gcc CXX=g++ CONFIGURE_FLAGS="--disable-libdl --with-malloc-conf=dss:primary" EXTRA_CFLAGS="-Werror -Wno-array-bounds"
+    - os: linux
+      arch: amd64
+      env: CC=gcc CXX=g++ CONFIGURE_FLAGS="--disable-libdl --with-malloc-conf=percpu_arena:percpu" EXTRA_CFLAGS="-Werror -Wno-array-bounds"
+    - os: linux
+      arch: amd64
+      env: CC=gcc CXX=g++ CONFIGURE_FLAGS="--disable-libdl --with-malloc-conf=background_thread:true" EXTRA_CFLAGS="-Werror -Wno-array-bounds"
+    - os: linux
+      arch: amd64
+      env: CC=gcc CXX=g++ CONFIGURE_FLAGS="--enable-opt-safety-checks --with-lg-page=16" EXTRA_CFLAGS="-Werror -Wno-array-bounds"
+    - os: linux
+      arch: amd64
+      env: CC=gcc CXX=g++ CONFIGURE_FLAGS="--enable-opt-safety-checks --with-malloc-conf=tcache:false" EXTRA_CFLAGS="-Werror -Wno-array-bounds"
+    - os: linux
+      arch: amd64
+      env: CC=gcc CXX=g++ CONFIGURE_FLAGS="--enable-opt-safety-checks --with-malloc-conf=dss:primary" EXTRA_CFLAGS="-Werror -Wno-array-bounds"
+    - os: linux
+      arch: amd64
+      env: CC=gcc CXX=g++ CONFIGURE_FLAGS="--enable-opt-safety-checks --with-malloc-conf=percpu_arena:percpu" EXTRA_CFLAGS="-Werror -Wno-array-bounds"
+    - os: linux
+      arch: amd64
+      env: CC=gcc CXX=g++ CONFIGURE_FLAGS="--enable-opt-safety-checks --with-malloc-conf=background_thread:true" EXTRA_CFLAGS="-Werror -Wno-array-bounds"
+    - os: linux
+      arch: amd64
+      env: CC=gcc CXX=g++ CONFIGURE_FLAGS="--with-lg-page=16 --with-malloc-conf=tcache:false" EXTRA_CFLAGS="-Werror -Wno-array-bounds"
+    - os: linux
+      arch: amd64
+      env: CC=gcc CXX=g++ CONFIGURE_FLAGS="--with-lg-page=16 --with-malloc-conf=dss:primary" EXTRA_CFLAGS="-Werror -Wno-array-bounds"
+    - os: linux
+      arch: amd64
+      env: CC=gcc CXX=g++ CONFIGURE_FLAGS="--with-lg-page=16 --with-malloc-conf=percpu_arena:percpu" EXTRA_CFLAGS="-Werror -Wno-array-bounds"
+    - os: linux
+      arch: amd64
+      env: CC=gcc CXX=g++ CONFIGURE_FLAGS="--with-lg-page=16 --with-malloc-conf=background_thread:true" EXTRA_CFLAGS="-Werror -Wno-array-bounds"
+    - os: linux
+      arch: amd64
+      env: CC=gcc CXX=g++ CONFIGURE_FLAGS="--with-malloc-conf=tcache:false,dss:primary" EXTRA_CFLAGS="-Werror -Wno-array-bounds"
+    - os: linux
+      arch: amd64
+      env: CC=gcc CXX=g++ CONFIGURE_FLAGS="--with-malloc-conf=tcache:false,percpu_arena:percpu" EXTRA_CFLAGS="-Werror -Wno-array-bounds"
+    - os: linux
+      arch: amd64
+      env: CC=gcc CXX=g++ CONFIGURE_FLAGS="--with-malloc-conf=tcache:false,background_thread:true" EXTRA_CFLAGS="-Werror -Wno-array-bounds"
+    - os: linux
+      arch: amd64
+      env: CC=gcc CXX=g++ CONFIGURE_FLAGS="--with-malloc-conf=dss:primary,percpu_arena:percpu" EXTRA_CFLAGS="-Werror -Wno-array-bounds"
+    - os: linux
+      arch: amd64
+      env: CC=gcc CXX=g++ CONFIGURE_FLAGS="--with-malloc-conf=dss:primary,background_thread:true" EXTRA_CFLAGS="-Werror -Wno-array-bounds"
+    - os: linux
+      arch: amd64
+      env: CC=gcc CXX=g++ CONFIGURE_FLAGS="--with-malloc-conf=percpu_arena:percpu,background_thread:true" EXTRA_CFLAGS="-Werror -Wno-array-bounds"
+    - os: linux
+      arch: ppc64le
+      env: CC=gcc CXX=g++ EXTRA_CFLAGS="-Werror -Wno-array-bounds"
+    - os: linux
+      arch: ppc64le
+      env: CC=gcc CXX=g++ CONFIGURE_FLAGS="--enable-debug" EXTRA_CFLAGS="-Werror -Wno-array-bounds"
+    - os: linux
+      arch: ppc64le
+      env: CC=gcc CXX=g++ CONFIGURE_FLAGS="--enable-prof" EXTRA_CFLAGS="-Werror -Wno-array-bounds"
+    - os: linux
+      arch: ppc64le
+      env: CC=gcc CXX=g++ CONFIGURE_FLAGS="--disable-stats" EXTRA_CFLAGS="-Werror -Wno-array-bounds"
+    - os: linux
+      arch: ppc64le
+      env: CC=gcc CXX=g++ CONFIGURE_FLAGS="--disable-libdl" EXTRA_CFLAGS="-Werror -Wno-array-bounds"
+    - os: linux
+      arch: ppc64le
+      env: CC=gcc CXX=g++ CONFIGURE_FLAGS="--enable-opt-safety-checks" EXTRA_CFLAGS="-Werror -Wno-array-bounds"
+    - os: linux
+      arch: ppc64le
+      env: CC=gcc CXX=g++ CONFIGURE_FLAGS="--with-lg-page=16" EXTRA_CFLAGS="-Werror -Wno-array-bounds"
+    - os: linux
+      arch: ppc64le
+      env: CC=gcc CXX=g++ CONFIGURE_FLAGS="--with-malloc-conf=tcache:false" EXTRA_CFLAGS="-Werror -Wno-array-bounds"
+    - os: linux
+      arch: ppc64le
+      env: CC=gcc CXX=g++ CONFIGURE_FLAGS="--with-malloc-conf=dss:primary" EXTRA_CFLAGS="-Werror -Wno-array-bounds"
+    - os: linux
+      arch: ppc64le
+      env: CC=gcc CXX=g++ CONFIGURE_FLAGS="--with-malloc-conf=percpu_arena:percpu" EXTRA_CFLAGS="-Werror -Wno-array-bounds"
+    - os: linux
+      arch: ppc64le
+      env: CC=gcc CXX=g++ CONFIGURE_FLAGS="--with-malloc-conf=background_thread:true" EXTRA_CFLAGS="-Werror -Wno-array-bounds"
+    - os: osx
+      arch: amd64
+      env: CC=gcc CXX=g++ EXTRA_CFLAGS="-Werror -Wno-array-bounds -Wno-unknown-warning-option -Wno-ignored-attributes -Wno-deprecated-declarations"
+    - os: osx
+      arch: amd64
+      env: CC=gcc CXX=g++ CROSS_COMPILE_32BIT=yes EXTRA_CFLAGS="-Werror -Wno-array-bounds -Wno-unknown-warning-option -Wno-ignored-attributes -Wno-deprecated-declarations"
+    - os: osx
+      arch: amd64
+      env: CC=gcc CXX=g++ CONFIGURE_FLAGS="--enable-debug" EXTRA_CFLAGS="-Werror -Wno-array-bounds -Wno-unknown-warning-option -Wno-ignored-attributes -Wno-deprecated-declarations"
+    - os: osx
+      arch: amd64
+      env: CC=gcc CXX=g++ CONFIGURE_FLAGS="--disable-stats" EXTRA_CFLAGS="-Werror -Wno-array-bounds -Wno-unknown-warning-option -Wno-ignored-attributes -Wno-deprecated-declarations"
+    - os: osx
+      arch: amd64
+      env: CC=gcc CXX=g++ CONFIGURE_FLAGS="--disable-libdl" EXTRA_CFLAGS="-Werror -Wno-array-bounds -Wno-unknown-warning-option -Wno-ignored-attributes -Wno-deprecated-declarations"
+    - os: osx
+      arch: amd64
+      env: CC=gcc CXX=g++ CONFIGURE_FLAGS="--enable-opt-safety-checks" EXTRA_CFLAGS="-Werror -Wno-array-bounds -Wno-unknown-warning-option -Wno-ignored-attributes -Wno-deprecated-declarations"
+    - os: osx
+      arch: amd64
+      env: CC=gcc CXX=g++ CONFIGURE_FLAGS="--with-lg-page=16" EXTRA_CFLAGS="-Werror -Wno-array-bounds -Wno-unknown-warning-option -Wno-ignored-attributes -Wno-deprecated-declarations"
+    - os: osx
+      arch: amd64
+      env: CC=gcc CXX=g++ CONFIGURE_FLAGS="--with-malloc-conf=tcache:false" EXTRA_CFLAGS="-Werror -Wno-array-bounds -Wno-unknown-warning-option -Wno-ignored-attributes -Wno-deprecated-declarations"
+    # Development build
+    - os: linux
+      env: CC=gcc CXX=g++ CONFIGURE_FLAGS="--enable-debug --disable-cache-oblivious --enable-stats --enable-log --enable-prof" EXTRA_CFLAGS="-Werror -Wno-array-bounds"
+    # --enable-expermental-smallocx:
+    - os: linux
+      env: CC=gcc CXX=g++ CONFIGURE_FLAGS="--enable-debug --enable-experimental-smallocx --enable-stats --enable-prof" EXTRA_CFLAGS="-Werror -Wno-array-bounds"
+
+
+before_install:
+  - |-
+    if test -f "./scripts/$TRAVIS_OS_NAME/before_install.sh"; then
+      source ./scripts/$TRAVIS_OS_NAME/before_install.sh
+    fi
+
+before_script:
+  - |-
+    if test -f "./scripts/$TRAVIS_OS_NAME/before_script.sh"; then
+      source ./scripts/$TRAVIS_OS_NAME/before_script.sh
+    else
+      scripts/gen_travis.py > travis_script && diff .travis.yml travis_script
+      autoconf
+      # If COMPILER_FLAGS are not empty, add them to CC and CXX
+      ./configure ${COMPILER_FLAGS:+ CC="$CC $COMPILER_FLAGS" CXX="$CXX $COMPILER_FLAGS"} $CONFIGURE_FLAGS
+      make -j3
+      make -j3 tests
+    fi
+
+script:
+  - |-
+    if test -f "./scripts/$TRAVIS_OS_NAME/script.sh"; then
+      source ./scripts/$TRAVIS_OS_NAME/script.sh
+    else
+      make check
+    fi
+
diff --git a/deps/jemalloc/COPYING b/deps/jemalloc/COPYING
new file mode 100644
index 0000000..3b7fd35
--- /dev/null
+++ b/deps/jemalloc/COPYING
@@ -0,0 +1,27 @@
+Unless otherwise specified, files in the jemalloc source distribution are
+subject to the following license:
+--------------------------------------------------------------------------------
+Copyright (C) 2002-present Jason Evans <jasone@canonware.com>.
+All rights reserved.
+Copyright (C) 2007-2012 Mozilla Foundation.  All rights reserved.
+Copyright (C) 2009-present Facebook, Inc.  All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are met:
+1. Redistributions of source code must retain the above copyright notice(s),
+   this list of conditions and the following disclaimer.
+2. Redistributions in binary form must reproduce the above copyright notice(s),
+   this list of conditions and the following disclaimer in the documentation
+   and/or other materials provided with the distribution.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER(S) ``AS IS'' AND ANY EXPRESS
+OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO
+EVENT SHALL THE COPYRIGHT HOLDER(S) BE LIABLE FOR ANY DIRECT, INDIRECT,
+INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
+OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+--------------------------------------------------------------------------------
diff --git a/deps/jemalloc/ChangeLog b/deps/jemalloc/ChangeLog
new file mode 100644
index 0000000..32fde56
--- /dev/null
+++ b/deps/jemalloc/ChangeLog
@@ -0,0 +1,1618 @@
+Following are change highlights associated with official releases.  Important
+bug fixes are all mentioned, but some internal enhancements are omitted here for
+brevity.  Much more detail can be found in the git revision history:
+
+    https://github.com/jemalloc/jemalloc
+
+* 5.3.0 (May 6, 2022)
+
+  This release contains many speed and space optimizations, from micro
+  optimizations on common paths to rework of internal data structures and
+  locking schemes, and many more too detailed to list below.  Multiple percent
+  of system level metric improvements were measured in tested production
+  workloads.  The release has gone through large-scale production testing.
+
+  New features:
+  - Add the thread.idle mallctl which hints that the calling thread will be
+    idle for a nontrivial period of time.  (@davidtgoldblatt)
+  - Allow small size classes to be the maximum size class to cache in the
+    thread-specific cache, through the opt.[lg_]tcache_max option.  (@interwq,
+    @jordalgo)
+  - Make the behavior of realloc(ptr, 0) configurable with opt.zero_realloc.
+    (@davidtgoldblatt)
+  - Add 'make uninstall' support.  (@sangshuduo, @Lapenkov)
+  - Support C++17 over-aligned allocation.  (@marksantaniello)
+  - Add the thread.peak mallctl for approximate per-thread peak memory tracking.
+    (@davidtgoldblatt)
+  - Add interval-based stats output opt.stats_interval.  (@interwq)
+  - Add prof.prefix to override filename prefixes for dumps.  (@zhxchen17)
+  - Add high resolution timestamp support for profiling.  (@tyroguru)
+  - Add the --collapsed flag to jeprof for flamegraph generation.
+    (@igorwwwwwwwwwwwwwwwwwwww)
+  - Add the --debug-syms-by-id option to jeprof for debug symbols discovery.
+    (@DeannaGelbart)
+  - Add the opt.prof_leak_error option to exit with error code when leak is
+    detected using opt.prof_final.  (@yunxuo)
+  - Add opt.cache_oblivious as an runtime alternative to config.cache_oblivious.
+    (@interwq)
+  - Add mallctl interfaces:
+    + opt.zero_realloc  (@davidtgoldblatt)
+    + opt.cache_oblivious  (@interwq)
+    + opt.prof_leak_error  (@yunxuo)
+    + opt.stats_interval  (@interwq)
+    + opt.stats_interval_opts  (@interwq)
+    + opt.tcache_max  (@interwq)
+    + opt.trust_madvise  (@azat)
+    + prof.prefix  (@zhxchen17)
+    + stats.zero_reallocs  (@davidtgoldblatt)
+    + thread.idle  (@davidtgoldblatt)
+    + thread.peak.{read,reset}  (@davidtgoldblatt)
+
+  Bug fixes:
+  - Fix the synchronization around explicit tcache creation which could cause
+    invalid tcache identifiers.  This regression was first released in 5.0.0.
+    (@yoshinorim, @davidtgoldblatt)
+  - Fix a profiling biasing issue which could cause incorrect heap usage and
+    object counts.  This issue existed in all previous releases with the heap
+    profiling feature.  (@davidtgoldblatt)
+  - Fix the order of stats counter updating on large realloc which could cause
+    failed assertions.  This regression was first released in 5.0.0.  (@azat)
+  - Fix the locking on the arena destroy mallctl, which could cause concurrent
+    arena creations to fail.  This functionality was first introduced in 5.0.0.
+    (@interwq)
+
+  Portability improvements:
+  - Remove nothrow from system function declarations on macOS and FreeBSD.
+    (@davidtgoldblatt, @fredemmott, @leres)
+  - Improve overcommit and page alignment settings on NetBSD.  (@zoulasc)
+  - Improve CPU affinity support on BSD platforms.  (@devnexen)
+  - Improve utrace detection and support.  (@devnexen)
+  - Improve QEMU support with MADV_DONTNEED zeroed pages detection.  (@azat)
+  - Add memcntl support on Solaris / illumos.  (@devnexen)
+  - Improve CPU_SPINWAIT on ARM.  (@AWSjswinney)
+  - Improve TSD cleanup on FreeBSD.  (@Lapenkov)
+  - Disable percpu_arena if the CPU count cannot be reliably detected.  (@azat)
+  - Add malloc_size(3) override support.  (@devnexen)
+  - Add mmap VM_MAKE_TAG support.  (@devnexen)
+  - Add support for MADV_[NO]CORE.  (@devnexen)
+  - Add support for DragonFlyBSD.  (@devnexen)
+  - Fix the QUANTUM setting on MIPS64.  (@brooksdavis)
+  - Add the QUANTUM setting for ARC.  (@vineetgarc)
+  - Add the QUANTUM setting for LoongArch.  (@wangjl-uos)
+  - Add QNX support.  (@jqian-aurora)
+  - Avoid atexit(3) calls unless the relevant profiling features are enabled.
+    (@BusyJay, @laiwei-rice, @interwq)
+  - Fix unknown option detection when using Clang.  (@Lapenkov)
+  - Fix symbol conflict with musl libc.  (@georgthegreat)
+  - Add -Wimplicit-fallthrough checks.  (@nickdesaulniers)
+  - Add __forceinline support on MSVC.  (@santagada)
+  - Improve FreeBSD and Windows CI support.  (@Lapenkov)
+  - Add CI support for PPC64LE architecture.  (@ezeeyahoo)
+
+  Incompatible changes:
+  - Maximum size class allowed in tcache (opt.[lg_]tcache_max) now has an upper
+    bound of 8MiB.  (@interwq)
+
+  Optimizations and refactors (@davidtgoldblatt, @Lapenkov, @interwq):
+  - Optimize the common cases of the thread cache operations.
+  - Optimize internal data structures, including RB tree and pairing heap.
+  - Optimize the internal locking on extent management.
+  - Extract and refactor the internal page allocator and interface modules.
+
+  Documentation:
+  - Fix doc build with --with-install-suffix.  (@lawmurray, @interwq)
+  - Add PROFILING_INTERNALS.md.  (@davidtgoldblatt)
+  - Ensure the proper order of doc building and installation.  (@Mingli-Yu)
+
+* 5.2.1 (August 5, 2019)
+
+  This release is primarily about Windows.  A critical virtual memory leak is
+  resolved on all Windows platforms.  The regression was present in all releases
+  since 5.0.0.
+
+  Bug fixes:
+  - Fix a severe virtual memory leak on Windows.  This regression was first
+    released in 5.0.0.  (@Ignition, @j0t, @frederik-h, @davidtgoldblatt,
+    @interwq)
+  - Fix size 0 handling in posix_memalign().  This regression was first released
+    in 5.2.0.  (@interwq)
+  - Fix the prof_log unit test which may observe unexpected backtraces from
+    compiler optimizations.  The test was first added in 5.2.0.  (@marxin,
+    @gnzlbg, @interwq)
+  - Fix the declaration of the extent_avail tree.  This regression was first
+    released in 5.1.0.  (@zoulasc)
+  - Fix an incorrect reference in jeprof.  This functionality was first released
+    in 3.0.0.  (@prehistoric-penguin)
+  - Fix an assertion on the deallocation fast-path.  This regression was first
+    released in 5.2.0.  (@yinan1048576)
+  - Fix the TLS_MODEL attribute in headers.  This regression was first released
+    in 5.0.0.  (@zoulasc, @interwq)
+
+  Optimizations and refactors:
+  - Implement opt.retain on Windows and enable by default on 64-bit.  (@interwq,
+    @davidtgoldblatt)
+  - Optimize away a branch on the operator delete[] path.  (@mgrice)
+  - Add format annotation to the format generator function.  (@zoulasc)
+  - Refactor and improve the size class header generation.  (@yinan1048576)
+  - Remove best fit.  (@djwatson)
+  - Avoid blocking on background thread locks for stats.  (@oranagra, @interwq)
+
+* 5.2.0 (April 2, 2019)
+
+  This release includes a few notable improvements, which are summarized below:
+  1) improved fast-path performance from the optimizations by @djwatson; 2)
+  reduced virtual memory fragmentation and metadata usage; and 3) bug fixes on
+  setting the number of background threads.  In addition, peak / spike memory
+  usage is improved with certain allocation patterns.  As usual, the release and
+  prior dev versions have gone through large-scale production testing.
+
+  New features:
+  - Implement oversize_threshold, which uses a dedicated arena for allocations
+    crossing the specified threshold to reduce fragmentation.  (@interwq)
+  - Add extents usage information to stats.  (@tyleretzel)
+  - Log time information for sampled allocations.  (@tyleretzel)
+  - Support 0 size in sdallocx.  (@djwatson)
+  - Output rate for certain counters in malloc_stats.  (@zinoale)
+  - Add configure option --enable-readlinkat, which allows the use of readlinkat
+    over readlink.  (@davidtgoldblatt)
+  - Add configure options --{enable,disable}-{static,shared} to allow not
+    building unwanted libraries.  (@Ericson2314)
+  - Add configure option --disable-libdl to enable fully static builds.
+    (@interwq)
+  - Add mallctl interfaces:
+	+ opt.oversize_threshold (@interwq)
+	+ stats.arenas.<i>.extent_avail (@tyleretzel)
+	+ stats.arenas.<i>.extents.<j>.n{dirty,muzzy,retained} (@tyleretzel)
+	+ stats.arenas.<i>.extents.<j>.{dirty,muzzy,retained}_bytes
+	  (@tyleretzel)
+
+  Portability improvements:
+  - Update MSVC builds.  (@maksqwe, @rustyx)
+  - Workaround a compiler optimizer bug on s390x.  (@rkmisra)
+  - Make use of pthread_set_name_np(3) on FreeBSD.  (@trasz)
+  - Implement malloc_getcpu() to enable percpu_arena for windows.  (@santagada)
+  - Link against -pthread instead of -lpthread.  (@paravoid)
+  - Make background_thread not dependent on libdl.  (@interwq)
+  - Add stringify to fix a linker directive issue on MSVC.  (@daverigby)
+  - Detect and fall back when 8-bit atomics are unavailable.  (@interwq)
+  - Fall back to the default pthread_create if dlsym(3) fails.  (@interwq)
+
+  Optimizations and refactors:
+  - Refactor the TSD module.  (@davidtgoldblatt)
+  - Avoid taking extents_muzzy mutex when muzzy is disabled.  (@interwq)
+  - Avoid taking large_mtx for auto arenas on the tcache flush path.  (@interwq)
+  - Optimize ixalloc by avoiding a size lookup.  (@interwq)
+  - Implement opt.oversize_threshold which uses a dedicated arena for requests
+    crossing the threshold, also eagerly purges the oversize extents.  Default
+    the threshold to 8 MiB.  (@interwq)
+  - Clean compilation with -Wextra.  (@gnzlbg, @jasone)
+  - Refactor the size class module.  (@davidtgoldblatt)
+  - Refactor the stats emitter.  (@tyleretzel)
+  - Optimize pow2_ceil.  (@rkmisra)
+  - Avoid runtime detection of lazy purging on FreeBSD.  (@trasz)
+  - Optimize mmap(2) alignment handling on FreeBSD.  (@trasz)
+  - Improve error handling for THP state initialization.  (@jsteemann)
+  - Rework the malloc() fast path.  (@djwatson)
+  - Rework the free() fast path.  (@djwatson)
+  - Refactor and optimize the tcache fill / flush paths.  (@djwatson)
+  - Optimize sync / lwsync on PowerPC.  (@chmeeedalf)
+  - Bypass extent_dalloc() when retain is enabled.  (@interwq)
+  - Optimize the locking on large deallocation.  (@interwq)
+  - Reduce the number of pages committed from sanity checking in debug build.
+    (@trasz, @interwq)
+  - Deprecate OSSpinLock.  (@interwq)
+  - Lower the default number of background threads to 4 (when the feature
+    is enabled).  (@interwq)
+  - Optimize the trylock spin wait.  (@djwatson)
+  - Use arena index for arena-matching checks.  (@interwq)
+  - Avoid forced decay on thread termination when using background threads.
+    (@interwq)
+  - Disable muzzy decay by default.  (@djwatson, @interwq)
+  - Only initialize libgcc unwinder when profiling is enabled.  (@paravoid,
+    @interwq)
+
+  Bug fixes (all only relevant to jemalloc 5.x):
+  - Fix background thread index issues with max_background_threads.  (@djwatson,
+    @interwq)
+  - Fix stats output for opt.lg_extent_max_active_fit.  (@interwq)
+  - Fix opt.prof_prefix initialization.  (@davidtgoldblatt)
+  - Properly trigger decay on tcache destroy.  (@interwq, @amosbird)
+  - Fix tcache.flush.  (@interwq)
+  - Detect whether explicit extent zero out is necessary with huge pages or
+    custom extent hooks, which may change the purge semantics.  (@interwq)
+  - Fix a side effect caused by extent_max_active_fit combined with decay-based
+    purging, where freed extents can accumulate and not be reused for an
+    extended period of time.  (@interwq, @mpghf)
+  - Fix a missing unlock on extent register error handling.  (@zoulasc)
+
+  Testing:
+  - Simplify the Travis script output.  (@gnzlbg)
+  - Update the test scripts for FreeBSD.  (@devnexen)
+  - Add unit tests for the producer-consumer pattern.  (@interwq)
+  - Add Cirrus-CI config for FreeBSD builds.  (@jasone)
+  - Add size-matching sanity checks on tcache flush.  (@davidtgoldblatt,
+    @interwq)
+
+  Incompatible changes:
+  - Remove --with-lg-page-sizes.  (@davidtgoldblatt)
+
+  Documentation:
+  - Attempt to build docs by default, however skip doc building when xsltproc
+    is missing. (@interwq, @cmuellner)
+
+* 5.1.0 (May 4, 2018)
+
+  This release is primarily about fine-tuning, ranging from several new features
+  to numerous notable performance and portability enhancements.  The release and
+  prior dev versions have been running in multiple large scale applications for
+  months, and the cumulative improvements are substantial in many cases.
+
+  Given the long and successful production runs, this release is likely a good
+  candidate for applications to upgrade, from both jemalloc 5.0 and before.  For
+  performance-critical applications, the newly added TUNING.md provides
+  guidelines on jemalloc tuning.
+
+  New features:
+  - Implement transparent huge page support for internal metadata.  (@interwq)
+  - Add opt.thp to allow enabling / disabling transparent huge pages for all
+    mappings.  (@interwq)
+  - Add maximum background thread count option.  (@djwatson)
+  - Allow prof_active to control opt.lg_prof_interval and prof.gdump.
+    (@interwq)
+  - Allow arena index lookup based on allocation addresses via mallctl.
+    (@lionkov)
+  - Allow disabling initial-exec TLS model.  (@davidtgoldblatt, @KenMacD)
+  - Add opt.lg_extent_max_active_fit to set the max ratio between the size of
+    the active extent selected (to split off from) and the size of the requested
+    allocation.  (@interwq, @davidtgoldblatt)
+  - Add retain_grow_limit to set the max size when growing virtual address
+    space.  (@interwq)
+  - Add mallctl interfaces:
+    + arena.<i>.retain_grow_limit  (@interwq)
+    + arenas.lookup  (@lionkov)
+    + max_background_threads  (@djwatson)
+    + opt.lg_extent_max_active_fit  (@interwq)
+    + opt.max_background_threads  (@djwatson)
+    + opt.metadata_thp  (@interwq)
+    + opt.thp  (@interwq)
+    + stats.metadata_thp  (@interwq)
+
+  Portability improvements:
+  - Support GNU/kFreeBSD configuration.  (@paravoid)
+  - Support m68k, nios2 and SH3 architectures.  (@paravoid)
+  - Fall back to FD_CLOEXEC when O_CLOEXEC is unavailable.  (@zonyitoo)
+  - Fix symbol listing for cross-compiling.  (@tamird)
+  - Fix high bits computation on ARM.  (@davidtgoldblatt, @paravoid)
+  - Disable the CPU_SPINWAIT macro for Power.  (@davidtgoldblatt, @marxin)
+  - Fix MSVC 2015 & 2017 builds.  (@rustyx)
+  - Improve RISC-V support.  (@EdSchouten)
+  - Set name mangling script in strict mode.  (@nicolov)
+  - Avoid MADV_HUGEPAGE on ARM.  (@marxin)
+  - Modify configure to determine return value of strerror_r.
+    (@davidtgoldblatt, @cferris1000)
+  - Make sure CXXFLAGS is tested with CPP compiler.  (@nehaljwani)
+  - Fix 32-bit build on MSVC.  (@rustyx)
+  - Fix external symbol on MSVC.  (@maksqwe)
+  - Avoid a printf format specifier warning.  (@jasone)
+  - Add configure option --disable-initial-exec-tls which can allow jemalloc to
+    be dynamically loaded after program startup.  (@davidtgoldblatt, @KenMacD)
+  - AArch64: Add ILP32 support.  (@cmuellner)
+  - Add --with-lg-vaddr configure option to support cross compiling.
+    (@cmuellner, @davidtgoldblatt)
+
+  Optimizations and refactors:
+  - Improve active extent fit with extent_max_active_fit.  This considerably
+    reduces fragmentation over time and improves virtual memory and metadata
+    usage.  (@davidtgoldblatt, @interwq)
+  - Eagerly coalesce large extents to reduce fragmentation.  (@interwq)
+  - sdallocx: only read size info when page aligned (i.e. possibly sampled),
+    which speeds up the sized deallocation path significantly.  (@interwq)
+  - Avoid attempting new mappings for in place expansion with retain, since
+    it rarely succeeds in practice and causes high overhead.  (@interwq)
+  - Refactor OOM handling in newImpl.  (@wqfish)
+  - Add internal fine-grained logging functionality for debugging use.
+    (@davidtgoldblatt)
+  - Refactor arena / tcache interactions.  (@davidtgoldblatt)
+  - Refactor extent management with dumpable flag.  (@davidtgoldblatt)
+  - Add runtime detection of lazy purging.  (@interwq)
+  - Use pairing heap instead of red-black tree for extents_avail.  (@djwatson)
+  - Use sysctl on startup in FreeBSD.  (@trasz)
+  - Use thread local prng state instead of atomic.  (@djwatson)
+  - Make decay to always purge one more extent than before, because in
+    practice large extents are usually the ones that cross the decay threshold.
+    Purging the additional extent helps save memory as well as reduce VM
+    fragmentation.  (@interwq)
+  - Fast division by dynamic values.  (@davidtgoldblatt)
+  - Improve the fit for aligned allocation.  (@interwq, @edwinsmith)
+  - Refactor extent_t bitpacking.  (@rkmisra)
+  - Optimize the generated assembly for ticker operations.  (@davidtgoldblatt)
+  - Convert stats printing to use a structured text emitter.  (@davidtgoldblatt)
+  - Remove preserve_lru feature for extents management.  (@djwatson)
+  - Consolidate two memory loads into one on the fast deallocation path.
+    (@davidtgoldblatt, @interwq)
+
+  Bug fixes (most of the issues are only relevant to jemalloc 5.0):
+  - Fix deadlock with multithreaded fork in OS X.  (@davidtgoldblatt)
+  - Validate returned file descriptor before use.  (@zonyitoo)
+  - Fix a few background thread initialization and shutdown issues.  (@interwq)
+  - Fix an extent coalesce + decay race by taking both coalescing extents off
+    the LRU list.  (@interwq)
+  - Fix potentially unbound increase during decay, caused by one thread keep
+    stashing memory to purge while other threads generating new pages.  The
+    number of pages to purge is checked to prevent this.  (@interwq)
+  - Fix a FreeBSD bootstrap assertion.  (@strejda, @interwq)
+  - Handle 32 bit mutex counters.  (@rkmisra)
+  - Fix a indexing bug when creating background threads.  (@davidtgoldblatt,
+    @binliu19)
+  - Fix arguments passed to extent_init.  (@yuleniwo, @interwq)
+  - Fix addresses used for ordering mutexes.  (@rkmisra)
+  - Fix abort_conf processing during bootstrap.  (@interwq)
+  - Fix include path order for out-of-tree builds.  (@cmuellner)
+
+  Incompatible changes:
+  - Remove --disable-thp.  (@interwq)
+  - Remove mallctl interfaces:
+    + config.thp  (@interwq)
+
+  Documentation:
+  - Add TUNING.md.  (@interwq, @davidtgoldblatt, @djwatson)
+
+* 5.0.1 (July 1, 2017)
+
+  This bugfix release fixes several issues, most of which are obscure enough
+  that typical applications are not impacted.
+
+  Bug fixes:
+  - Update decay->nunpurged before purging, in order to avoid potential update
+    races and subsequent incorrect purging volume.  (@interwq)
+  - Only abort on dlsym(3) error if the failure impacts an enabled feature (lazy
+    locking and/or background threads).  This mitigates an initialization
+    failure bug for which we still do not have a clear reproduction test case.
+    (@interwq)
+  - Modify tsd management so that it neither crashes nor leaks if a thread's
+    only allocation activity is to call free() after TLS destructors have been
+    executed.  This behavior was observed when operating with GNU libc, and is
+    unlikely to be an issue with other libc implementations.  (@interwq)
+  - Mask signals during background thread creation.  This prevents signals from
+    being inadvertently delivered to background threads.  (@jasone,
+    @davidtgoldblatt, @interwq)
+  - Avoid inactivity checks within background threads, in order to prevent
+    recursive mutex acquisition.  (@interwq)
+  - Fix extent_grow_retained() to use the specified hooks when the
+    arena.<i>.extent_hooks mallctl is used to override the default hooks.
+    (@interwq)
+  - Add missing reentrancy support for custom extent hooks which allocate.
+    (@interwq)
+  - Post-fork(2), re-initialize the list of tcaches associated with each arena
+    to contain no tcaches except the forking thread's.  (@interwq)
+  - Add missing post-fork(2) mutex reinitialization for extent_grow_mtx.  This
+    fixes potential deadlocks after fork(2).  (@interwq)
+  - Enforce minimum autoconf version (currently 2.68), since 2.63 is known to
+    generate corrupt configure scripts.  (@jasone)
+  - Ensure that the configured page size (--with-lg-page) is no larger than the
+    configured huge page size (--with-lg-hugepage).  (@jasone)
+
+* 5.0.0 (June 13, 2017)
+
+  Unlike all previous jemalloc releases, this release does not use naturally
+  aligned "chunks" for virtual memory management, and instead uses page-aligned
+  "extents".  This change has few externally visible effects, but the internal
+  impacts are... extensive.  Many other internal changes combine to make this
+  the most cohesively designed version of jemalloc so far, with ample
+  opportunity for further enhancements.
+
+  Continuous integration is now an integral aspect of development thanks to the
+  efforts of @davidtgoldblatt, and the dev branch tends to remain reasonably
+  stable on the tested platforms (Linux, FreeBSD, macOS, and Windows).  As a
+  side effect the official release frequency may decrease over time.
+
+  New features:
+  - Implement optional per-CPU arena support; threads choose which arena to use
+    based on current CPU rather than on fixed thread-->arena associations.
+    (@interwq)
+  - Implement two-phase decay of unused dirty pages.  Pages transition from
+    dirty-->muzzy-->clean, where the first phase transition relies on
+    madvise(... MADV_FREE) semantics, and the second phase transition discards
+    pages such that they are replaced with demand-zeroed pages on next access.
+    (@jasone)
+  - Increase decay time resolution from seconds to milliseconds.  (@jasone)
+  - Implement opt-in per CPU background threads, and use them for asynchronous
+    decay-driven unused dirty page purging.  (@interwq)
+  - Add mutex profiling, which collects a variety of statistics useful for
+    diagnosing overhead/contention issues.  (@interwq)
+  - Add C++ new/delete operator bindings.  (@djwatson)
+  - Support manually created arena destruction, such that all data and metadata
+    are discarded.  Add MALLCTL_ARENAS_DESTROYED for accessing merged stats
+    associated with destroyed arenas.  (@jasone)
+  - Add MALLCTL_ARENAS_ALL as a fixed index for use in accessing
+    merged/destroyed arena statistics via mallctl.  (@jasone)
+  - Add opt.abort_conf to optionally abort if invalid configuration options are
+    detected during initialization.  (@interwq)
+  - Add opt.stats_print_opts, so that e.g. JSON output can be selected for the
+    stats dumped during exit if opt.stats_print is true.  (@jasone)
+  - Add --with-version=VERSION for use when embedding jemalloc into another
+    project's git repository.  (@jasone)
+  - Add --disable-thp to support cross compiling.  (@jasone)
+  - Add --with-lg-hugepage to support cross compiling.  (@jasone)
+  - Add mallctl interfaces (various authors):
+    + background_thread
+    + opt.abort_conf
+    + opt.retain
+    + opt.percpu_arena
+    + opt.background_thread
+    + opt.{dirty,muzzy}_decay_ms
+    + opt.stats_print_opts
+    + arena.<i>.initialized
+    + arena.<i>.destroy
+    + arena.<i>.{dirty,muzzy}_decay_ms
+    + arena.<i>.extent_hooks
+    + arenas.{dirty,muzzy}_decay_ms
+    + arenas.bin.<i>.slab_size
+    + arenas.nlextents
+    + arenas.lextent.<i>.size
+    + arenas.create
+    + stats.background_thread.{num_threads,num_runs,run_interval}
+    + stats.mutexes.{ctl,background_thread,prof,reset}.
+      {num_ops,num_spin_acq,num_wait,max_wait_time,total_wait_time,max_num_thds,
+      num_owner_switch}
+    + stats.arenas.<i>.{dirty,muzzy}_decay_ms
+    + stats.arenas.<i>.uptime
+    + stats.arenas.<i>.{pmuzzy,base,internal,resident}
+    + stats.arenas.<i>.{dirty,muzzy}_{npurge,nmadvise,purged}
+    + stats.arenas.<i>.bins.<j>.{nslabs,reslabs,curslabs}
+    + stats.arenas.<i>.bins.<j>.mutex.
+      {num_ops,num_spin_acq,num_wait,max_wait_time,total_wait_time,max_num_thds,
+      num_owner_switch}
+    + stats.arenas.<i>.lextents.<j>.{nmalloc,ndalloc,nrequests,curlextents}
+    + stats.arenas.i.mutexes.{large,extent_avail,extents_dirty,extents_muzzy,
+      extents_retained,decay_dirty,decay_muzzy,base,tcache_list}.
+      {num_ops,num_spin_acq,num_wait,max_wait_time,total_wait_time,max_num_thds,
+      num_owner_switch}
+
+  Portability improvements:
+  - Improve reentrant allocation support, such that deadlock is less likely if
+    e.g. a system library call in turn allocates memory.  (@davidtgoldblatt,
+    @interwq)
+  - Support static linking of jemalloc with glibc.  (@djwatson)
+
+  Optimizations and refactors:
+  - Organize virtual memory as "extents" of virtual memory pages, rather than as
+    naturally aligned "chunks", and store all metadata in arbitrarily distant
+    locations.  This reduces virtual memory external fragmentation, and will
+    interact better with huge pages (not yet explicitly supported).  (@jasone)
+  - Fold large and huge size classes together; only small and large size classes
+    remain.  (@jasone)
+  - Unify the allocation paths, and merge most fast-path branching decisions.
+    (@davidtgoldblatt, @interwq)
+  - Embed per thread automatic tcache into thread-specific data, which reduces
+    conditional branches and dereferences.  Also reorganize tcache to increase
+    fast-path data locality.  (@interwq)
+  - Rewrite atomics to closely model the C11 API, convert various
+    synchronization from mutex-based to atomic, and use the explicit memory
+    ordering control to resolve various hypothetical races without increasing
+    synchronization overhead.  (@davidtgoldblatt)
+  - Extensively optimize rtree via various methods:
+    + Add multiple layers of rtree lookup caching, since rtree lookups are now
+      part of fast-path deallocation.  (@interwq)
+    + Determine rtree layout at compile time.  (@jasone)
+    + Make the tree shallower for common configurations.  (@jasone)
+    + Embed the root node in the top-level rtree data structure, thus avoiding
+      one level of indirection.  (@jasone)
+    + Further specialize leaf elements as compared to internal node elements,
+      and directly embed extent metadata needed for fast-path deallocation.
+      (@jasone)
+    + Ignore leading always-zero address bits (architecture-specific).
+      (@jasone)
+  - Reorganize headers (ongoing work) to make them hermetic, and disentangle
+    various module dependencies.  (@davidtgoldblatt)
+  - Convert various internal data structures such as size class metadata from
+    boot-time-initialized to compile-time-initialized.  Propagate resulting data
+    structure simplifications, such as making arena metadata fixed-size.
+    (@jasone)
+  - Simplify size class lookups when constrained to size classes that are
+    multiples of the page size.  This speeds lookups, but the primary benefit is
+    complexity reduction in code that was the source of numerous regressions.
+    (@jasone)
+  - Lock individual extents when possible for localized extent operations,
+    rather than relying on a top-level arena lock.  (@davidtgoldblatt, @jasone)
+  - Use first fit layout policy instead of best fit, in order to improve
+    packing.  (@jasone)
+  - If munmap(2) is not in use, use an exponential series to grow each arena's
+    virtual memory, so that the number of disjoint virtual memory mappings
+    remains low.  (@jasone)
+  - Implement per arena base allocators, so that arenas never share any virtual
+    memory pages.  (@jasone)
+  - Automatically generate private symbol name mangling macros.  (@jasone)
+
+  Incompatible changes:
+  - Replace chunk hooks with an expanded/normalized set of extent hooks.
+    (@jasone)
+  - Remove ratio-based purging.  (@jasone)
+  - Remove --disable-tcache.  (@jasone)
+  - Remove --disable-tls.  (@jasone)
+  - Remove --enable-ivsalloc.  (@jasone)
+  - Remove --with-lg-size-class-group.  (@jasone)
+  - Remove --with-lg-tiny-min.  (@jasone)
+  - Remove --disable-cc-silence.  (@jasone)
+  - Remove --enable-code-coverage.  (@jasone)
+  - Remove --disable-munmap (replaced by opt.retain).  (@jasone)
+  - Remove Valgrind support.  (@jasone)
+  - Remove quarantine support.  (@jasone)
+  - Remove redzone support.  (@jasone)
+  - Remove mallctl interfaces (various authors):
+    + config.munmap
+    + config.tcache
+    + config.tls
+    + config.valgrind
+    + opt.lg_chunk
+    + opt.purge
+    + opt.lg_dirty_mult
+    + opt.decay_time
+    + opt.quarantine
+    + opt.redzone
+    + opt.thp
+    + arena.<i>.lg_dirty_mult
+    + arena.<i>.decay_time
+    + arena.<i>.chunk_hooks
+    + arenas.initialized
+    + arenas.lg_dirty_mult
+    + arenas.decay_time
+    + arenas.bin.<i>.run_size
+    + arenas.nlruns
+    + arenas.lrun.<i>.size
+    + arenas.nhchunks
+    + arenas.hchunk.<i>.size
+    + arenas.extend
+    + stats.cactive
+    + stats.arenas.<i>.lg_dirty_mult
+    + stats.arenas.<i>.decay_time
+    + stats.arenas.<i>.metadata.{mapped,allocated}
+    + stats.arenas.<i>.{npurge,nmadvise,purged}
+    + stats.arenas.<i>.huge.{allocated,nmalloc,ndalloc,nrequests}
+    + stats.arenas.<i>.bins.<j>.{nruns,reruns,curruns}
+    + stats.arenas.<i>.lruns.<j>.{nmalloc,ndalloc,nrequests,curruns}
+    + stats.arenas.<i>.hchunks.<j>.{nmalloc,ndalloc,nrequests,curhchunks}
+
+  Bug fixes:
+  - Improve interval-based profile dump triggering to dump only one profile when
+    a single allocation's size exceeds the interval.  (@jasone)
+  - Use prefixed function names (as controlled by --with-jemalloc-prefix) when
+    pruning backtrace frames in jeprof.  (@jasone)
+
+* 4.5.0 (February 28, 2017)
+
+  This is the first release to benefit from much broader continuous integration
+  testing, thanks to @davidtgoldblatt.  Had we had this testing infrastructure
+  in place for prior releases, it would have caught all of the most serious
+  regressions fixed by this release.
+
+  New features:
+  - Add --disable-thp and the opt.thp mallctl to provide opt-out mechanisms for
+    transparent huge page integration.  (@jasone)
+  - Update zone allocator integration to work with macOS 10.12.  (@glandium)
+  - Restructure *CFLAGS configuration, so that CFLAGS behaves typically, and
+    EXTRA_CFLAGS provides a way to specify e.g. -Werror during building, but not
+    during configuration.  (@jasone, @ronawho)
+
+  Bug fixes:
+  - Fix DSS (sbrk(2)-based) allocation.  This regression was first released in
+    4.3.0.  (@jasone)
+  - Handle race in per size class utilization computation.  This functionality
+    was first released in 4.0.0.  (@interwq)
+  - Fix lock order reversal during gdump.  (@jasone)
+  - Fix/refactor tcache synchronization.  This regression was first released in
+    4.0.0.  (@jasone)
+  - Fix various JSON-formatted malloc_stats_print() bugs.  This functionality
+    was first released in 4.3.0.  (@jasone)
+  - Fix huge-aligned allocation.  This regression was first released in 4.4.0.
+    (@jasone)
+  - When transparent huge page integration is enabled, detect what state pages
+    start in according to the kernel's current operating mode, and only convert
+    arena chunks to non-huge during purging if that is not their initial state.
+    This functionality was first released in 4.4.0.  (@jasone)
+  - Fix lg_chunk clamping for the --enable-cache-oblivious --disable-fill case.
+    This regression was first released in 4.0.0.  (@jasone, @428desmo)
+  - Properly detect sparc64 when building for Linux.  (@glaubitz)
+
+* 4.4.0 (December 3, 2016)
+
+  New features:
+  - Add configure support for *-*-linux-android.  (@cferris1000, @jasone)
+  - Add the --disable-syscall configure option, for use on systems that place
+    security-motivated limitations on syscall(2).  (@jasone)
+  - Add support for Debian GNU/kFreeBSD.  (@thesam)
+
+  Optimizations:
+  - Add extent serial numbers and use them where appropriate as a sort key that
+    is higher priority than address, so that the allocation policy prefers older
+    extents.  This tends to improve locality (decrease fragmentation) when
+    memory grows downward.  (@jasone)
+  - Refactor madvise(2) configuration so that MADV_FREE is detected and utilized
+    on Linux 4.5 and newer.  (@jasone)
+  - Mark partially purged arena chunks as non-huge-page.  This improves
+    interaction with Linux's transparent huge page functionality.  (@jasone)
+
+  Bug fixes:
+  - Fix size class computations for edge conditions involving extremely large
+    allocations.  This regression was first released in 4.0.0.  (@jasone,
+    @ingvarha)
+  - Remove overly restrictive assertions related to the cactive statistic.  This
+    regression was first released in 4.1.0.  (@jasone)
+  - Implement a more reliable detection scheme for os_unfair_lock on macOS.
+    (@jszakmeister)
+
+* 4.3.1 (November 7, 2016)
+
+  Bug fixes:
+  - Fix a severe virtual memory leak.  This regression was first released in
+    4.3.0.  (@interwq, @jasone)
+  - Refactor atomic and prng APIs to restore support for 32-bit platforms that
+    use pre-C11 toolchains, e.g. FreeBSD's mips.  (@jasone)
+
+* 4.3.0 (November 4, 2016)
+
+  This is the first release that passes the test suite for multiple Windows
+  configurations, thanks in large part to @glandium setting up continuous
+  integration via AppVeyor (and Travis CI for Linux and OS X).
+
+  New features:
+  - Add "J" (JSON) support to malloc_stats_print().  (@jasone)
+  - Add Cray compiler support.  (@ronawho)
+
+  Optimizations:
+  - Add/use adaptive spinning for bootstrapping and radix tree node
+    initialization.  (@jasone)
+
+  Bug fixes:
+  - Fix large allocation to search starting in the optimal size class heap,
+    which can substantially reduce virtual memory churn and fragmentation.  This
+    regression was first released in 4.0.0.  (@mjp41, @jasone)
+  - Fix stats.arenas.<i>.nthreads accounting.  (@interwq)
+  - Fix and simplify decay-based purging.  (@jasone)
+  - Make DSS (sbrk(2)-related) operations lockless, which resolves potential
+    deadlocks during thread exit.  (@jasone)
+  - Fix over-sized allocation of radix tree leaf nodes.  (@mjp41, @ogaun,
+    @jasone)
+  - Fix over-sized allocation of arena_t (plus associated stats) data
+    structures.  (@jasone, @interwq)
+  - Fix EXTRA_CFLAGS to not affect configuration.  (@jasone)
+  - Fix a Valgrind integration bug.  (@ronawho)
+  - Disallow 0x5a junk filling when running in Valgrind.  (@jasone)
+  - Fix a file descriptor leak on Linux.  This regression was first released in
+    4.2.0.  (@vsarunas, @jasone)
+  - Fix static linking of jemalloc with glibc.  (@djwatson)
+  - Use syscall(2) rather than {open,read,close}(2) during boot on Linux.  This
+    works around other libraries' system call wrappers performing reentrant
+    allocation.  (@kspinka, @Whissi, @jasone)
+  - Fix OS X default zone replacement to work with OS X 10.12.  (@glandium,
+    @jasone)
+  - Fix cached memory management to avoid needless commit/decommit operations
+    during purging, which resolves permanent virtual memory map fragmentation
+    issues on Windows.  (@mjp41, @jasone)
+  - Fix TSD fetches to avoid (recursive) allocation.  This is relevant to
+    non-TLS and Windows configurations.  (@jasone)
+  - Fix malloc_conf overriding to work on Windows.  (@jasone)
+  - Forcibly disable lazy-lock on Windows (was forcibly *enabled*).  (@jasone)
+
+* 4.2.1 (June 8, 2016)
+
+  Bug fixes:
+  - Fix bootstrapping issues for configurations that require allocation during
+    tsd initialization (e.g. --disable-tls).  (@cferris1000, @jasone)
+  - Fix gettimeofday() version of nstime_update().  (@ronawho)
+  - Fix Valgrind regressions in calloc() and chunk_alloc_wrapper().  (@ronawho)
+  - Fix potential VM map fragmentation regression.  (@jasone)
+  - Fix opt_zero-triggered in-place huge reallocation zeroing.  (@jasone)
+  - Fix heap profiling context leaks in reallocation edge cases.  (@jasone)
+
+* 4.2.0 (May 12, 2016)
+
+  New features:
+  - Add the arena.<i>.reset mallctl, which makes it possible to discard all of
+    an arena's allocations in a single operation.  (@jasone)
+  - Add the stats.retained and stats.arenas.<i>.retained statistics.  (@jasone)
+  - Add the --with-version configure option.  (@jasone)
+  - Support --with-lg-page values larger than actual page size.  (@jasone)
+
+  Optimizations:
+  - Use pairing heaps rather than red-black trees for various hot data
+    structures.  (@djwatson, @jasone)
+  - Streamline fast paths of rtree operations.  (@jasone)
+  - Optimize the fast paths of calloc() and [m,d,sd]allocx().  (@jasone)
+  - Decommit unused virtual memory if the OS does not overcommit.  (@jasone)
+  - Specify MAP_NORESERVE on Linux if [heuristic] overcommit is active, in order
+    to avoid unfortunate interactions during fork(2).  (@jasone)
+
+  Bug fixes:
+  - Fix chunk accounting related to triggering gdump profiles.  (@jasone)
+  - Link against librt for clock_gettime(2) if glibc < 2.17.  (@jasone)
+  - Scale leak report summary according to sampling probability.  (@jasone)
+
+* 4.1.1 (May 3, 2016)
+
+  This bugfix release resolves a variety of mostly minor issues, though the
+  bitmap fix is critical for 64-bit Windows.
+
+  Bug fixes:
+  - Fix the linear scan version of bitmap_sfu() to shift by the proper amount
+    even when sizeof(long) is not the same as sizeof(void *), as on 64-bit
+    Windows.  (@jasone)
+  - Fix hashing functions to avoid unaligned memory accesses (and resulting
+    crashes).  This is relevant at least to some ARM-based platforms.
+    (@rkmisra)
+  - Fix fork()-related lock rank ordering reversals.  These reversals were
+    unlikely to cause deadlocks in practice except when heap profiling was
+    enabled and active.  (@jasone)
+  - Fix various chunk leaks in OOM code paths.  (@jasone)
+  - Fix malloc_stats_print() to print opt.narenas correctly.  (@jasone)
+  - Fix MSVC-specific build/test issues.  (@rustyx, @yuslepukhin)
+  - Fix a variety of test failures that were due to test fragility rather than
+    core bugs.  (@jasone)
+
+* 4.1.0 (February 28, 2016)
+
+  This release is primarily about optimizations, but it also incorporates a lot
+  of portability-motivated refactoring and enhancements.  Many people worked on
+  this release, to an extent that even with the omission here of minor changes
+  (see git revision history), and of the people who reported and diagnosed
+  issues, so much of the work was contributed that starting with this release,
+  changes are annotated with author credits to help reflect the collaborative
+  effort involved.
+
+  New features:
+  - Implement decay-based unused dirty page purging, a major optimization with
+    mallctl API impact.  This is an alternative to the existing ratio-based
+    unused dirty page purging, and is intended to eventually become the sole
+    purging mechanism.  New mallctls:
+    + opt.purge
+    + opt.decay_time
+    + arena.<i>.decay
+    + arena.<i>.decay_time
+    + arenas.decay_time
+    + stats.arenas.<i>.decay_time
+    (@jasone, @cevans87)
+  - Add --with-malloc-conf, which makes it possible to embed a default
+    options string during configuration.  This was motivated by the desire to
+    specify --with-malloc-conf=purge:decay , since the default must remain
+    purge:ratio until the 5.0.0 release.  (@jasone)
+  - Add MS Visual Studio 2015 support.  (@rustyx, @yuslepukhin)
+  - Make *allocx() size class overflow behavior defined.  The maximum
+    size class is now less than PTRDIFF_MAX to protect applications against
+    numerical overflow, and all allocation functions are guaranteed to indicate
+    errors rather than potentially crashing if the request size exceeds the
+    maximum size class.  (@jasone)
+  - jeprof:
+    + Add raw heap profile support.  (@jasone)
+    + Add --retain and --exclude for backtrace symbol filtering.  (@jasone)
+
+  Optimizations:
+  - Optimize the fast path to combine various bootstrapping and configuration
+    checks and execute more streamlined code in the common case.  (@interwq)
+  - Use linear scan for small bitmaps (used for small object tracking).  In
+    addition to speeding up bitmap operations on 64-bit systems, this reduces
+    allocator metadata overhead by approximately 0.2%.  (@djwatson)
+  - Separate arena_avail trees, which substantially speeds up run tree
+    operations.  (@djwatson)
+  - Use memoization (boot-time-computed table) for run quantization.  Separate
+    arena_avail trees reduced the importance of this optimization.  (@jasone)
+  - Attempt mmap-based in-place huge reallocation.  This can dramatically speed
+    up incremental huge reallocation.  (@jasone)
+
+  Incompatible changes:
+  - Make opt.narenas unsigned rather than size_t.  (@jasone)
+
+  Bug fixes:
+  - Fix stats.cactive accounting regression.  (@rustyx, @jasone)
+  - Handle unaligned keys in hash().  This caused problems for some ARM systems.
+    (@jasone, @cferris1000)
+  - Refactor arenas array.  In addition to fixing a fork-related deadlock, this
+    makes arena lookups faster and simpler.  (@jasone)
+  - Move retained memory allocation out of the default chunk allocation
+    function, to a location that gets executed even if the application installs
+    a custom chunk allocation function.  This resolves a virtual memory leak.
+    (@buchgr)
+  - Fix a potential tsd cleanup leak.  (@cferris1000, @jasone)
+  - Fix run quantization.  In practice this bug had no impact unless
+    applications requested memory with alignment exceeding one page.
+    (@jasone, @djwatson)
+  - Fix LinuxThreads-specific bootstrapping deadlock.  (Cosmin Paraschiv)
+  - jeprof:
+    + Don't discard curl options if timeout is not defined.  (@djwatson)
+    + Detect failed profile fetches.  (@djwatson)
+  - Fix stats.arenas.<i>.{dss,lg_dirty_mult,decay_time,pactive,pdirty} for
+    --disable-stats case.  (@jasone)
+
+* 4.0.4 (October 24, 2015)
+
+  This bugfix release fixes another xallocx() regression.  No other regressions
+  have come to light in over a month, so this is likely a good starting point
+  for people who prefer to wait for "dot one" releases with all the major issues
+  shaken out.
+
+  Bug fixes:
+  - Fix xallocx(..., MALLOCX_ZERO to zero the last full trailing page of large
+    allocations that have been randomly assigned an offset of 0 when
+    --enable-cache-oblivious configure option is enabled.
+
+* 4.0.3 (September 24, 2015)
+
+  This bugfix release continues the trend of xallocx() and heap profiling fixes.
+
+  Bug fixes:
+  - Fix xallocx(..., MALLOCX_ZERO) to zero all trailing bytes of large
+    allocations when --enable-cache-oblivious configure option is enabled.
+  - Fix xallocx(..., MALLOCX_ZERO) to zero trailing bytes of huge allocations
+    when resizing from/to a size class that is not a multiple of the chunk size.
+  - Fix prof_tctx_dump_iter() to filter out nodes that were created after heap
+    profile dumping started.
+  - Work around a potentially bad thread-specific data initialization
+    interaction with NPTL (glibc's pthreads implementation).
+
+* 4.0.2 (September 21, 2015)
+
+  This bugfix release addresses a few bugs specific to heap profiling.
+
+  Bug fixes:
+  - Fix ixallocx_prof_sample() to never modify nor create sampled small
+    allocations.  xallocx() is in general incapable of moving small allocations,
+    so this fix removes buggy code without loss of generality.
+  - Fix irallocx_prof_sample() to always allocate large regions, even when
+    alignment is non-zero.
+  - Fix prof_alloc_rollback() to read tdata from thread-specific data rather
+    than dereferencing a potentially invalid tctx.
+
+* 4.0.1 (September 15, 2015)
+
+  This is a bugfix release that is somewhat high risk due to the amount of
+  refactoring required to address deep xallocx() problems.  As a side effect of
+  these fixes, xallocx() now tries harder to partially fulfill requests for
+  optional extra space.  Note that a couple of minor heap profiling
+  optimizations are included, but these are better thought of as performance
+  fixes that were integral to discovering most of the other bugs.
+
+  Optimizations:
+  - Avoid a chunk metadata read in arena_prof_tctx_set(), since it is in the
+    fast path when heap profiling is enabled.  Additionally, split a special
+    case out into arena_prof_tctx_reset(), which also avoids chunk metadata
+    reads.
+  - Optimize irallocx_prof() to optimistically update the sampler state.  The
+    prior implementation appears to have been a holdover from when
+    rallocx()/xallocx() functionality was combined as rallocm().
+
+  Bug fixes:
+  - Fix TLS configuration such that it is enabled by default for platforms on
+    which it works correctly.
+  - Fix arenas_cache_cleanup() and arena_get_hard() to handle
+    allocation/deallocation within the application's thread-specific data
+    cleanup functions even after arenas_cache is torn down.
+  - Fix xallocx() bugs related to size+extra exceeding HUGE_MAXCLASS.
+  - Fix chunk purge hook calls for in-place huge shrinking reallocation to
+    specify the old chunk size rather than the new chunk size.  This bug caused
+    no correctness issues for the default chunk purge function, but was
+    visible to custom functions set via the "arena.<i>.chunk_hooks" mallctl.
+  - Fix heap profiling bugs:
+    + Fix heap profiling to distinguish among otherwise identical sample sites
+      with interposed resets (triggered via the "prof.reset" mallctl).  This bug
+      could cause data structure corruption that would most likely result in a
+      segfault.
+    + Fix irealloc_prof() to prof_alloc_rollback() on OOM.
+    + Make one call to prof_active_get_unlocked() per allocation event, and use
+      the result throughout the relevant functions that handle an allocation
+      event.  Also add a missing check in prof_realloc().  These fixes protect
+      allocation events against concurrent prof_active changes.
+    + Fix ixallocx_prof() to pass usize_max and zero to ixallocx_prof_sample()
+      in the correct order.
+    + Fix prof_realloc() to call prof_free_sampled_object() after calling
+      prof_malloc_sample_object().  Prior to this fix, if tctx and old_tctx were
+      the same, the tctx could have been prematurely destroyed.
+  - Fix portability bugs:
+    + Don't bitshift by negative amounts when encoding/decoding run sizes in
+      chunk header maps.  This affected systems with page sizes greater than 8
+      KiB.
+    + Rename index_t to szind_t to avoid an existing type on Solaris.
+    + Add JEMALLOC_CXX_THROW to the memalign() function prototype, in order to
+      match glibc and avoid compilation errors when including both
+      jemalloc/jemalloc.h and malloc.h in C++ code.
+    + Don't assume that /bin/sh is appropriate when running size_classes.sh
+      during configuration.
+    + Consider __sparcv9 a synonym for __sparc64__ when defining LG_QUANTUM.
+    + Link tests to librt if it contains clock_gettime(2).
+
+* 4.0.0 (August 17, 2015)
+
+  This version contains many speed and space optimizations, both minor and
+  major.  The major themes are generalization, unification, and simplification.
+  Although many of these optimizations cause no visible behavior change, their
+  cumulative effect is substantial.
+
+  New features:
+  - Normalize size class spacing to be consistent across the complete size
+    range.  By default there are four size classes per size doubling, but this
+    is now configurable via the --with-lg-size-class-group option.  Also add the
+    --with-lg-page, --with-lg-page-sizes, --with-lg-quantum, and
+    --with-lg-tiny-min options, which can be used to tweak page and size class
+    settings.  Impacts:
+    + Worst case performance for incrementally growing/shrinking reallocation
+      is improved because there are far fewer size classes, and therefore
+      copying happens less often.
+    + Internal fragmentation is limited to 20% for all but the smallest size
+      classes (those less than four times the quantum).  (1B + 4 KiB)
+      and (1B + 4 MiB) previously suffered nearly 50% internal fragmentation.
+    + Chunk fragmentation tends to be lower because there are fewer distinct run
+      sizes to pack.
+  - Add support for explicit tcaches.  The "tcache.create", "tcache.flush", and
+    "tcache.destroy" mallctls control tcache lifetime and flushing, and the
+    MALLOCX_TCACHE(tc) and MALLOCX_TCACHE_NONE flags to the *allocx() API
+    control which tcache is used for each operation.
+  - Implement per thread heap profiling, as well as the ability to
+    enable/disable heap profiling on a per thread basis.  Add the "prof.reset",
+    "prof.lg_sample", "thread.prof.name", "thread.prof.active",
+    "opt.prof_thread_active_init", "prof.thread_active_init", and
+    "thread.prof.active" mallctls.
+  - Add support for per arena application-specified chunk allocators, configured
+    via the "arena.<i>.chunk_hooks" mallctl.
+  - Refactor huge allocation to be managed by arenas, so that arenas now
+    function as general purpose independent allocators.  This is important in
+    the context of user-specified chunk allocators, aside from the scalability
+    benefits.  Related new statistics:
+    + The "stats.arenas.<i>.huge.allocated", "stats.arenas.<i>.huge.nmalloc",
+      "stats.arenas.<i>.huge.ndalloc", and "stats.arenas.<i>.huge.nrequests"
+      mallctls provide high level per arena huge allocation statistics.
+    + The "arenas.nhchunks", "arenas.hchunk.<i>.size",
+      "stats.arenas.<i>.hchunks.<j>.nmalloc",
+      "stats.arenas.<i>.hchunks.<j>.ndalloc",
+      "stats.arenas.<i>.hchunks.<j>.nrequests", and
+      "stats.arenas.<i>.hchunks.<j>.curhchunks" mallctls provide per size class
+      statistics.
+  - Add the 'util' column to malloc_stats_print() output, which reports the
+    proportion of available regions that are currently in use for each small
+    size class.
+  - Add "alloc" and "free" modes for for junk filling (see the "opt.junk"
+    mallctl), so that it is possible to separately enable junk filling for
+    allocation versus deallocation.
+  - Add the jemalloc-config script, which provides information about how
+    jemalloc was configured, and how to integrate it into application builds.
+  - Add metadata statistics, which are accessible via the "stats.metadata",
+    "stats.arenas.<i>.metadata.mapped", and
+    "stats.arenas.<i>.metadata.allocated" mallctls.
+  - Add the "stats.resident" mallctl, which reports the upper limit of
+    physically resident memory mapped by the allocator.
+  - Add per arena control over unused dirty page purging, via the
+    "arenas.lg_dirty_mult", "arena.<i>.lg_dirty_mult", and
+    "stats.arenas.<i>.lg_dirty_mult" mallctls.
+  - Add the "prof.gdump" mallctl, which makes it possible to toggle the gdump
+    feature on/off during program execution.
+  - Add sdallocx(), which implements sized deallocation.  The primary
+    optimization over dallocx() is the removal of a metadata read, which often
+    suffers an L1 cache miss.
+  - Add missing header includes in jemalloc/jemalloc.h, so that applications
+    only have to #include <jemalloc/jemalloc.h>.
+  - Add support for additional platforms:
+    + Bitrig
+    + Cygwin
+    + DragonFlyBSD
+    + iOS
+    + OpenBSD
+    + OpenRISC/or1k
+
+  Optimizations:
+  - Maintain dirty runs in per arena LRUs rather than in per arena trees of
+    dirty-run-containing chunks.  In practice this change significantly reduces
+    dirty page purging volume.
+  - Integrate whole chunks into the unused dirty page purging machinery.  This
+    reduces the cost of repeated huge allocation/deallocation, because it
+    effectively introduces a cache of chunks.
+  - Split the arena chunk map into two separate arrays, in order to increase
+    cache locality for the frequently accessed bits.
+  - Move small run metadata out of runs, into arena chunk headers.  This reduces
+    run fragmentation, smaller runs reduce external fragmentation for small size
+    classes, and packed (less uniformly aligned) metadata layout improves CPU
+    cache set distribution.
+  - Randomly distribute large allocation base pointer alignment relative to page
+    boundaries in order to more uniformly utilize CPU cache sets.  This can be
+    disabled via the --disable-cache-oblivious configure option, and queried via
+    the "config.cache_oblivious" mallctl.
+  - Micro-optimize the fast paths for the public API functions.
+  - Refactor thread-specific data to reside in a single structure.  This assures
+    that only a single TLS read is necessary per call into the public API.
+  - Implement in-place huge allocation growing and shrinking.
+  - Refactor rtree (radix tree for chunk lookups) to be lock-free, and make
+    additional optimizations that reduce maximum lookup depth to one or two
+    levels.  This resolves what was a concurrency bottleneck for per arena huge
+    allocation, because a global data structure is critical for determining
+    which arenas own which huge allocations.
+
+  Incompatible changes:
+  - Replace --enable-cc-silence with --disable-cc-silence to suppress spurious
+    warnings by default.
+  - Assure that the constness of malloc_usable_size()'s return type matches that
+    of the system implementation.
+  - Change the heap profile dump format to support per thread heap profiling,
+    rename pprof to jeprof, and enhance it with the --thread=<n> option.  As a
+    result, the bundled jeprof must now be used rather than the upstream
+    (gperftools) pprof.
+  - Disable "opt.prof_final" by default, in order to avoid atexit(3), which can
+    internally deadlock on some platforms.
+  - Change the "arenas.nlruns" mallctl type from size_t to unsigned.
+  - Replace the "stats.arenas.<i>.bins.<j>.allocated" mallctl with
+    "stats.arenas.<i>.bins.<j>.curregs".
+  - Ignore MALLOC_CONF in set{uid,gid,cap} binaries.
+  - Ignore MALLOCX_ARENA(a) in dallocx(), in favor of using the
+    MALLOCX_TCACHE(tc) and MALLOCX_TCACHE_NONE flags to control tcache usage.
+
+  Removed features:
+  - Remove the *allocm() API, which is superseded by the *allocx() API.
+  - Remove the --enable-dss options, and make dss non-optional on all platforms
+    which support sbrk(2).
+  - Remove the "arenas.purge" mallctl, which was obsoleted by the
+    "arena.<i>.purge" mallctl in 3.1.0.
+  - Remove the unnecessary "opt.valgrind" mallctl; jemalloc automatically
+    detects whether it is running inside Valgrind.
+  - Remove the "stats.huge.allocated", "stats.huge.nmalloc", and
+    "stats.huge.ndalloc" mallctls.
+  - Remove the --enable-mremap option.
+  - Remove the "stats.chunks.current", "stats.chunks.total", and
+    "stats.chunks.high" mallctls.
+
+  Bug fixes:
+  - Fix the cactive statistic to decrease (rather than increase) when active
+    memory decreases.  This regression was first released in 3.5.0.
+  - Fix OOM handling in memalign() and valloc().  A variant of this bug existed
+    in all releases since 2.0.0, which introduced these functions.
+  - Fix an OOM-related regression in arena_tcache_fill_small(), which could
+    cause cache corruption on OOM.  This regression was present in all releases
+    from 2.2.0 through 3.6.0.
+  - Fix size class overflow handling for malloc(), posix_memalign(), memalign(),
+    calloc(), and realloc() when profiling is enabled.
+  - Fix the "arena.<i>.dss" mallctl to return an error if "primary" or
+    "secondary" precedence is specified, but sbrk(2) is not supported.
+  - Fix fallback lg_floor() implementations to handle extremely large inputs.
+  - Ensure the default purgeable zone is after the default zone on OS X.
+  - Fix latent bugs in atomic_*().
+  - Fix the "arena.<i>.dss" mallctl to handle read-only calls.
+  - Fix tls_model configuration to enable the initial-exec model when possible.
+  - Mark malloc_conf as a weak symbol so that the application can override it.
+  - Correctly detect glibc's adaptive pthread mutexes.
+  - Fix the --without-export configure option.
+
+* 3.6.0 (March 31, 2014)
+
+  This version contains a critical bug fix for a regression present in 3.5.0 and
+  3.5.1.
+
+  Bug fixes:
+  - Fix a regression in arena_chunk_alloc() that caused crashes during
+    small/large allocation if chunk allocation failed.  In the absence of this
+    bug, chunk allocation failure would result in allocation failure, e.g.  NULL
+    return from malloc().  This regression was introduced in 3.5.0.
+  - Fix backtracing for gcc intrinsics-based backtracing by specifying
+    -fno-omit-frame-pointer to gcc.  Note that the application (and all the
+    libraries it links to) must also be compiled with this option for
+    backtracing to be reliable.
+  - Use dss allocation precedence for huge allocations as well as small/large
+    allocations.
+  - Fix test assertion failure message formatting.  This bug did not manifest on
+    x86_64 systems because of implementation subtleties in va_list.
+  - Fix inconsequential test failures for hash and SFMT code.
+
+  New features:
+  - Support heap profiling on FreeBSD.  This feature depends on the proc
+    filesystem being mounted during heap profile dumping.
+
+* 3.5.1 (February 25, 2014)
+
+  This version primarily addresses minor bugs in test code.
+
+  Bug fixes:
+  - Configure Solaris/Illumos to use MADV_FREE.
+  - Fix junk filling for mremap(2)-based huge reallocation.  This is only
+    relevant if configuring with the --enable-mremap option specified.
+  - Avoid compilation failure if 'restrict' C99 keyword is not supported by the
+    compiler.
+  - Add a configure test for SSE2 rather than assuming it is usable on i686
+    systems.  This fixes test compilation errors, especially on 32-bit Linux
+    systems.
+  - Fix mallctl argument size mismatches (size_t vs. uint64_t) in the stats unit
+    test.
+  - Fix/remove flawed alignment-related overflow tests.
+  - Prevent compiler optimizations that could change backtraces in the
+    prof_accum unit test.
+
+* 3.5.0 (January 22, 2014)
+
+  This version focuses on refactoring and automated testing, though it also
+  includes some non-trivial heap profiling optimizations not mentioned below.
+
+  New features:
+  - Add the *allocx() API, which is a successor to the experimental *allocm()
+    API.  The *allocx() functions are slightly simpler to use because they have
+    fewer parameters, they directly return the results of primary interest, and
+    mallocx()/rallocx() avoid the strict aliasing pitfall that
+    allocm()/rallocm() share with posix_memalign().  Note that *allocm() is
+    slated for removal in the next non-bugfix release.
+  - Add support for LinuxThreads.
+
+  Bug fixes:
+  - Unless heap profiling is enabled, disable floating point code and don't link
+    with libm.  This, in combination with e.g. EXTRA_CFLAGS=-mno-sse on x64
+    systems, makes it possible to completely disable floating point register
+    use.  Some versions of glibc neglect to save/restore caller-saved floating
+    point registers during dynamic lazy symbol loading, and the symbol loading
+    code uses whatever malloc the application happens to have linked/loaded
+    with, the result being potential floating point register corruption.
+  - Report ENOMEM rather than EINVAL if an OOM occurs during heap profiling
+    backtrace creation in imemalign().  This bug impacted posix_memalign() and
+    aligned_alloc().
+  - Fix a file descriptor leak in a prof_dump_maps() error path.
+  - Fix prof_dump() to close the dump file descriptor for all relevant error
+    paths.
+  - Fix rallocm() to use the arena specified by the ALLOCM_ARENA(s) flag for
+    allocation, not just deallocation.
+  - Fix a data race for large allocation stats counters.
+  - Fix a potential infinite loop during thread exit.  This bug occurred on
+    Solaris, and could affect other platforms with similar pthreads TSD
+    implementations.
+  - Don't junk-fill reallocations unless usable size changes.  This fixes a
+    violation of the *allocx()/*allocm() semantics.
+  - Fix growing large reallocation to junk fill new space.
+  - Fix huge deallocation to junk fill when munmap is disabled.
+  - Change the default private namespace prefix from empty to je_, and change
+    --with-private-namespace-prefix so that it prepends an additional prefix
+    rather than replacing je_.  This reduces the likelihood of applications
+    which statically link jemalloc experiencing symbol name collisions.
+  - Add missing private namespace mangling (relevant when
+    --with-private-namespace is specified).
+  - Add and use JEMALLOC_INLINE_C so that static inline functions are marked as
+    static even for debug builds.
+  - Add a missing mutex unlock in a malloc_init_hard() error path.  In practice
+    this error path is never executed.
+  - Fix numerous bugs in malloc_strotumax() error handling/reporting.  These
+    bugs had no impact except for malformed inputs.
+  - Fix numerous bugs in malloc_snprintf().  These bugs were not exercised by
+    existing calls, so they had no impact.
+
+* 3.4.1 (October 20, 2013)
+
+  Bug fixes:
+  - Fix a race in the "arenas.extend" mallctl that could cause memory corruption
+    of internal data structures and subsequent crashes.
+  - Fix Valgrind integration flaws that caused Valgrind warnings about reads of
+    uninitialized memory in:
+    + arena chunk headers
+    + internal zero-initialized data structures (relevant to tcache and prof
+      code)
+  - Preserve errno during the first allocation.  A readlink(2) call during
+    initialization fails unless /etc/malloc.conf exists, so errno was typically
+    set during the first allocation prior to this fix.
+  - Fix compilation warnings reported by gcc 4.8.1.
+
+* 3.4.0 (June 2, 2013)
+
+  This version is essentially a small bugfix release, but the addition of
+  aarch64 support requires that the minor version be incremented.
+
+  Bug fixes:
+  - Fix race-triggered deadlocks in chunk_record().  These deadlocks were
+    typically triggered by multiple threads concurrently deallocating huge
+    objects.
+
+  New features:
+  - Add support for the aarch64 architecture.
+
+* 3.3.1 (March 6, 2013)
+
+  This version fixes bugs that are typically encountered only when utilizing
+  custom run-time options.
+
+  Bug fixes:
+  - Fix a locking order bug that could cause deadlock during fork if heap
+    profiling were enabled.
+  - Fix a chunk recycling bug that could cause the allocator to lose track of
+    whether a chunk was zeroed.  On FreeBSD, NetBSD, and OS X, it could cause
+    corruption if allocating via sbrk(2) (unlikely unless running with the
+    "dss:primary" option specified).  This was completely harmless on Linux
+    unless using mlockall(2) (and unlikely even then, unless the
+    --disable-munmap configure option or the "dss:primary" option was
+    specified).  This regression was introduced in 3.1.0 by the
+    mlockall(2)/madvise(2) interaction fix.
+  - Fix TLS-related memory corruption that could occur during thread exit if the
+    thread never allocated memory.  Only the quarantine and prof facilities were
+    susceptible.
+  - Fix two quarantine bugs:
+    + Internal reallocation of the quarantined object array leaked the old
+      array.
+    + Reallocation failure for internal reallocation of the quarantined object
+      array (very unlikely) resulted in memory corruption.
+  - Fix Valgrind integration to annotate all internally allocated memory in a
+    way that keeps Valgrind happy about internal data structure access.
+  - Fix building for s390 systems.
+
+* 3.3.0 (January 23, 2013)
+
+  This version includes a few minor performance improvements in addition to the
+  listed new features and bug fixes.
+
+  New features:
+  - Add clipping support to lg_chunk option processing.
+  - Add the --enable-ivsalloc option.
+  - Add the --without-export option.
+  - Add the --disable-zone-allocator option.
+
+  Bug fixes:
+  - Fix "arenas.extend" mallctl to output the number of arenas.
+  - Fix chunk_recycle() to unconditionally inform Valgrind that returned memory
+    is undefined.
+  - Fix build break on FreeBSD related to alloca.h.
+
+* 3.2.0 (November 9, 2012)
+
+  In addition to a couple of bug fixes, this version modifies page run
+  allocation and dirty page purging algorithms in order to better control
+  page-level virtual memory fragmentation.
+
+  Incompatible changes:
+  - Change the "opt.lg_dirty_mult" default from 5 to 3 (32:1 to 8:1).
+
+  Bug fixes:
+  - Fix dss/mmap allocation precedence code to use recyclable mmap memory only
+    after primary dss allocation fails.
+  - Fix deadlock in the "arenas.purge" mallctl.  This regression was introduced
+    in 3.1.0 by the addition of the "arena.<i>.purge" mallctl.
+
+* 3.1.0 (October 16, 2012)
+
+  New features:
+  - Auto-detect whether running inside Valgrind, thus removing the need to
+    manually specify MALLOC_CONF=valgrind:true.
+  - Add the "arenas.extend" mallctl, which allows applications to create
+    manually managed arenas.
+  - Add the ALLOCM_ARENA() flag for {,r,d}allocm().
+  - Add the "opt.dss", "arena.<i>.dss", and "stats.arenas.<i>.dss" mallctls,
+    which provide control over dss/mmap precedence.
+  - Add the "arena.<i>.purge" mallctl, which obsoletes "arenas.purge".
+  - Define LG_QUANTUM for hppa.
+
+  Incompatible changes:
+  - Disable tcache by default if running inside Valgrind, in order to avoid
+    making unallocated objects appear reachable to Valgrind.
+  - Drop const from malloc_usable_size() argument on Linux.
+
+  Bug fixes:
+  - Fix heap profiling crash if sampled object is freed via realloc(p, 0).
+  - Remove const from __*_hook variable declarations, so that glibc can modify
+    them during process forking.
+  - Fix mlockall(2)/madvise(2) interaction.
+  - Fix fork(2)-related deadlocks.
+  - Fix error return value for "thread.tcache.enabled" mallctl.
+
+* 3.0.0 (May 11, 2012)
+
+  Although this version adds some major new features, the primary focus is on
+  internal code cleanup that facilitates maintainability and portability, most
+  of which is not reflected in the ChangeLog.  This is the first release to
+  incorporate substantial contributions from numerous other developers, and the
+  result is a more broadly useful allocator (see the git revision history for
+  contribution details).  Note that the license has been unified, thanks to
+  Facebook granting a license under the same terms as the other copyright
+  holders (see COPYING).
+
+  New features:
+  - Implement Valgrind support, redzones, and quarantine.
+  - Add support for additional platforms:
+    + FreeBSD
+    + Mac OS X Lion
+    + MinGW
+    + Windows (no support yet for replacing the system malloc)
+  - Add support for additional architectures:
+    + MIPS
+    + SH4
+    + Tilera
+  - Add support for cross compiling.
+  - Add nallocm(), which rounds a request size up to the nearest size class
+    without actually allocating.
+  - Implement aligned_alloc() (blame C11).
+  - Add the "thread.tcache.enabled" mallctl.
+  - Add the "opt.prof_final" mallctl.
+  - Update pprof (from gperftools 2.0).
+  - Add the --with-mangling option.
+  - Add the --disable-experimental option.
+  - Add the --disable-munmap option, and make it the default on Linux.
+  - Add the --enable-mremap option, which disables use of mremap(2) by default.
+
+  Incompatible changes:
+  - Enable stats by default.
+  - Enable fill by default.
+  - Disable lazy locking by default.
+  - Rename the "tcache.flush" mallctl to "thread.tcache.flush".
+  - Rename the "arenas.pagesize" mallctl to "arenas.page".
+  - Change the "opt.lg_prof_sample" default from 0 to 19 (1 B to 512 KiB).
+  - Change the "opt.prof_accum" default from true to false.
+
+  Removed features:
+  - Remove the swap feature, including the "config.swap", "swap.avail",
+    "swap.prezeroed", "swap.nfds", and "swap.fds" mallctls.
+  - Remove highruns statistics, including the
+    "stats.arenas.<i>.bins.<j>.highruns" and
+    "stats.arenas.<i>.lruns.<j>.highruns" mallctls.
+  - As part of small size class refactoring, remove the "opt.lg_[qc]space_max",
+    "arenas.cacheline", "arenas.subpage", "arenas.[tqcs]space_{min,max}", and
+    "arenas.[tqcs]bins" mallctls.
+  - Remove the "arenas.chunksize" mallctl.
+  - Remove the "opt.lg_prof_tcmax" option.
+  - Remove the "opt.lg_prof_bt_max" option.
+  - Remove the "opt.lg_tcache_gc_sweep" option.
+  - Remove the --disable-tiny option, including the "config.tiny" mallctl.
+  - Remove the --enable-dynamic-page-shift configure option.
+  - Remove the --enable-sysv configure option.
+
+  Bug fixes:
+  - Fix a statistics-related bug in the "thread.arena" mallctl that could cause
+    invalid statistics and crashes.
+  - Work around TLS deallocation via free() on Linux.  This bug could cause
+    write-after-free memory corruption.
+  - Fix a potential deadlock that could occur during interval- and
+    growth-triggered heap profile dumps.
+  - Fix large calloc() zeroing bugs due to dropping chunk map unzeroed flags.
+  - Fix chunk_alloc_dss() to stop claiming memory is zeroed.  This bug could
+    cause memory corruption and crashes with --enable-dss specified.
+  - Fix fork-related bugs that could cause deadlock in children between fork
+    and exec.
+  - Fix malloc_stats_print() to honor 'b' and 'l' in the opts parameter.
+  - Fix realloc(p, 0) to act like free(p).
+  - Do not enforce minimum alignment in memalign().
+  - Check for NULL pointer in malloc_usable_size().
+  - Fix an off-by-one heap profile statistics bug that could be observed in
+    interval- and growth-triggered heap profiles.
+  - Fix the "epoch" mallctl to update cached stats even if the passed in epoch
+    is 0.
+  - Fix bin->runcur management to fix a layout policy bug.  This bug did not
+    affect correctness.
+  - Fix a bug in choose_arena_hard() that potentially caused more arenas to be
+    initialized than necessary.
+  - Add missing "opt.lg_tcache_max" mallctl implementation.
+  - Use glibc allocator hooks to make mixed allocator usage less likely.
+  - Fix build issues for --disable-tcache.
+  - Don't mangle pthread_create() when --with-private-namespace is specified.
+
+* 2.2.5 (November 14, 2011)
+
+  Bug fixes:
+  - Fix huge_ralloc() race when using mremap(2).  This is a serious bug that
+    could cause memory corruption and/or crashes.
+  - Fix huge_ralloc() to maintain chunk statistics.
+  - Fix malloc_stats_print(..., "a") output.
+
+* 2.2.4 (November 5, 2011)
+
+  Bug fixes:
+  - Initialize arenas_tsd before using it.  This bug existed for 2.2.[0-3], as
+    well as for --disable-tls builds in earlier releases.
+  - Do not assume a 4 KiB page size in test/rallocm.c.
+
+* 2.2.3 (August 31, 2011)
+
+  This version fixes numerous bugs related to heap profiling.
+
+  Bug fixes:
+  - Fix a prof-related race condition.  This bug could cause memory corruption,
+    but only occurred in non-default configurations (prof_accum:false).
+  - Fix off-by-one backtracing issues (make sure that prof_alloc_prep() is
+    excluded from backtraces).
+  - Fix a prof-related bug in realloc() (only triggered by OOM errors).
+  - Fix prof-related bugs in allocm() and rallocm().
+  - Fix prof_tdata_cleanup() for --disable-tls builds.
+  - Fix a relative include path, to fix objdir builds.
+
+* 2.2.2 (July 30, 2011)
+
+  Bug fixes:
+  - Fix a build error for --disable-tcache.
+  - Fix assertions in arena_purge() (for real this time).
+  - Add the --with-private-namespace option.  This is a workaround for symbol
+    conflicts that can inadvertently arise when using static libraries.
+
+* 2.2.1 (March 30, 2011)
+
+  Bug fixes:
+  - Implement atomic operations for x86/x64.  This fixes compilation failures
+    for versions of gcc that are still in wide use.
+  - Fix an assertion in arena_purge().
+
+* 2.2.0 (March 22, 2011)
+
+  This version incorporates several improvements to algorithms and data
+  structures that tend to reduce fragmentation and increase speed.
+
+  New features:
+  - Add the "stats.cactive" mallctl.
+  - Update pprof (from google-perftools 1.7).
+  - Improve backtracing-related configuration logic, and add the
+    --disable-prof-libgcc option.
+
+  Bug fixes:
+  - Change default symbol visibility from "internal", to "hidden", which
+    decreases the overhead of library-internal function calls.
+  - Fix symbol visibility so that it is also set on OS X.
+  - Fix a build dependency regression caused by the introduction of the .pic.o
+    suffix for PIC object files.
+  - Add missing checks for mutex initialization failures.
+  - Don't use libgcc-based backtracing except on x64, where it is known to work.
+  - Fix deadlocks on OS X that were due to memory allocation in
+    pthread_mutex_lock().
+  - Heap profiling-specific fixes:
+    + Fix memory corruption due to integer overflow in small region index
+      computation, when using a small enough sample interval that profiling
+      context pointers are stored in small run headers.
+    + Fix a bootstrap ordering bug that only occurred with TLS disabled.
+    + Fix a rallocm() rsize bug.
+    + Fix error detection bugs for aligned memory allocation.
+
+* 2.1.3 (March 14, 2011)
+
+  Bug fixes:
+  - Fix a cpp logic regression (due to the "thread.{de,}allocatedp" mallctl fix
+    for OS X in 2.1.2).
+  - Fix a "thread.arena" mallctl bug.
+  - Fix a thread cache stats merging bug.
+
+* 2.1.2 (March 2, 2011)
+
+  Bug fixes:
+  - Fix "thread.{de,}allocatedp" mallctl for OS X.
+  - Add missing jemalloc.a to build system.
+
+* 2.1.1 (January 31, 2011)
+
+  Bug fixes:
+  - Fix aligned huge reallocation (affected allocm()).
+  - Fix the ALLOCM_LG_ALIGN macro definition.
+  - Fix a heap dumping deadlock.
+  - Fix a "thread.arena" mallctl bug.
+
+* 2.1.0 (December 3, 2010)
+
+  This version incorporates some optimizations that can't quite be considered
+  bug fixes.
+
+  New features:
+  - Use Linux's mremap(2) for huge object reallocation when possible.
+  - Avoid locking in mallctl*() when possible.
+  - Add the "thread.[de]allocatedp" mallctl's.
+  - Convert the manual page source from roff to DocBook, and generate both roff
+    and HTML manuals.
+
+  Bug fixes:
+  - Fix a crash due to incorrect bootstrap ordering.  This only impacted
+    --enable-debug --enable-dss configurations.
+  - Fix a minor statistics bug for mallctl("swap.avail", ...).
+
+* 2.0.1 (October 29, 2010)
+
+  Bug fixes:
+  - Fix a race condition in heap profiling that could cause undefined behavior
+    if "opt.prof_accum" were disabled.
+  - Add missing mutex unlocks for some OOM error paths in the heap profiling
+    code.
+  - Fix a compilation error for non-C99 builds.
+
+* 2.0.0 (October 24, 2010)
+
+  This version focuses on the experimental *allocm() API, and on improved
+  run-time configuration/introspection.  Nonetheless, numerous performance
+  improvements are also included.
+
+  New features:
+  - Implement the experimental {,r,s,d}allocm() API, which provides a superset
+    of the functionality available via malloc(), calloc(), posix_memalign(),
+    realloc(), malloc_usable_size(), and free().  These functions can be used to
+    allocate/reallocate aligned zeroed memory, ask for optional extra memory
+    during reallocation, prevent object movement during reallocation, etc.
+  - Replace JEMALLOC_OPTIONS/JEMALLOC_PROF_PREFIX with MALLOC_CONF, which is
+    more human-readable, and more flexible.  For example:
+      JEMALLOC_OPTIONS=AJP
+    is now:
+      MALLOC_CONF=abort:true,fill:true,stats_print:true
+  - Port to Apple OS X.  Sponsored by Mozilla.
+  - Make it possible for the application to control thread-->arena mappings via
+    the "thread.arena" mallctl.
+  - Add compile-time support for all TLS-related functionality via pthreads TSD.
+    This is mainly of interest for OS X, which does not support TLS, but has a
+    TSD implementation with similar performance.
+  - Override memalign() and valloc() if they are provided by the system.
+  - Add the "arenas.purge" mallctl, which can be used to synchronously purge all
+    dirty unused pages.
+  - Make cumulative heap profiling data optional, so that it is possible to
+    limit the amount of memory consumed by heap profiling data structures.
+  - Add per thread allocation counters that can be accessed via the
+    "thread.allocated" and "thread.deallocated" mallctls.
+
+  Incompatible changes:
+  - Remove JEMALLOC_OPTIONS and malloc_options (see MALLOC_CONF above).
+  - Increase default backtrace depth from 4 to 128 for heap profiling.
+  - Disable interval-based profile dumps by default.
+
+  Bug fixes:
+  - Remove bad assertions in fork handler functions.  These assertions could
+    cause aborts for some combinations of configure settings.
+  - Fix strerror_r() usage to deal with non-standard semantics in GNU libc.
+  - Fix leak context reporting.  This bug tended to cause the number of contexts
+    to be underreported (though the reported number of objects and bytes were
+    correct).
+  - Fix a realloc() bug for large in-place growing reallocation.  This bug could
+    cause memory corruption, but it was hard to trigger.
+  - Fix an allocation bug for small allocations that could be triggered if
+    multiple threads raced to create a new run of backing pages.
+  - Enhance the heap profiler to trigger samples based on usable size, rather
+    than request size.
+  - Fix a heap profiling bug due to sometimes losing track of requested object
+    size for sampled objects.
+
+* 1.0.3 (August 12, 2010)
+
+  Bug fixes:
+  - Fix the libunwind-based implementation of stack backtracing (used for heap
+    profiling).  This bug could cause zero-length backtraces to be reported.
+  - Add a missing mutex unlock in library initialization code.  If multiple
+    threads raced to initialize malloc, some of them could end up permanently
+    blocked.
+
+* 1.0.2 (May 11, 2010)
+
+  Bug fixes:
+  - Fix junk filling of large objects, which could cause memory corruption.
+  - Add MAP_NORESERVE support for chunk mapping, because otherwise virtual
+    memory limits could cause swap file configuration to fail.  Contributed by
+    Jordan DeLong.
+
+* 1.0.1 (April 14, 2010)
+
+  Bug fixes:
+  - Fix compilation when --enable-fill is specified.
+  - Fix threads-related profiling bugs that affected accuracy and caused memory
+    to be leaked during thread exit.
+  - Fix dirty page purging race conditions that could cause crashes.
+  - Fix crash in tcache flushing code during thread destruction.
+
+* 1.0.0 (April 11, 2010)
+
+  This release focuses on speed and run-time introspection.  Numerous
+  algorithmic improvements make this release substantially faster than its
+  predecessors.
+
+  New features:
+  - Implement autoconf-based configuration system.
+  - Add mallctl*(), for the purposes of introspection and run-time
+    configuration.
+  - Make it possible for the application to manually flush a thread's cache, via
+    the "tcache.flush" mallctl.
+  - Base maximum dirty page count on proportion of active memory.
+  - Compute various additional run-time statistics, including per size class
+    statistics for large objects.
+  - Expose malloc_stats_print(), which can be called repeatedly by the
+    application.
+  - Simplify the malloc_message() signature to only take one string argument,
+    and incorporate an opaque data pointer argument for use by the application
+    in combination with malloc_stats_print().
+  - Add support for allocation backed by one or more swap files, and allow the
+    application to disable over-commit if swap files are in use.
+  - Implement allocation profiling and leak checking.
+
+  Removed features:
+  - Remove the dynamic arena rebalancing code, since thread-specific caching
+    reduces its utility.
+
+  Bug fixes:
+  - Modify chunk allocation to work when address space layout randomization
+    (ASLR) is in use.
+  - Fix thread cleanup bugs related to TLS destruction.
+  - Handle 0-size allocation requests in posix_memalign().
+  - Fix a chunk leak.  The leaked chunks were never touched, so this impacted
+    virtual memory usage, but not physical memory usage.
+
+* linux_2008082[78]a (August 27/28, 2008)
+
+  These snapshot releases are the simple result of incorporating Linux-specific
+  support into the FreeBSD malloc sources.
+
+--------------------------------------------------------------------------------
+vim:filetype=text:textwidth=80
diff --git a/deps/jemalloc/INSTALL.md b/deps/jemalloc/INSTALL.md
new file mode 100644
index 0000000..90da718
--- /dev/null
+++ b/deps/jemalloc/INSTALL.md
@@ -0,0 +1,424 @@
+Building and installing a packaged release of jemalloc can be as simple as
+typing the following while in the root directory of the source tree:
+
+    ./configure
+    make
+    make install
+
+If building from unpackaged developer sources, the simplest command sequence
+that might work is:
+
+    ./autogen.sh
+    make
+    make install
+
+You can uninstall the installed build artifacts like this:
+
+    make uninstall
+
+Notes:
+ - "autoconf" needs to be installed
+ - Documentation is built by the default target only when xsltproc is
+available.  Build will warn but not stop if the dependency is missing.
+
+
+## Advanced configuration
+
+The 'configure' script supports numerous options that allow control of which
+functionality is enabled, where jemalloc is installed, etc.  Optionally, pass
+any of the following arguments (not a definitive list) to 'configure':
+
+* `--help`
+
+    Print a definitive list of options.
+
+* `--prefix=<install-root-dir>`
+
+    Set the base directory in which to install.  For example:
+
+        ./configure --prefix=/usr/local
+
+    will cause files to be installed into /usr/local/include, /usr/local/lib,
+    and /usr/local/man.
+
+* `--with-version=(<major>.<minor>.<bugfix>-<nrev>-g<gid>|VERSION)`
+
+    The VERSION file is mandatory for successful configuration, and the
+    following steps are taken to assure its presence:
+    1) If --with-version=<major>.<minor>.<bugfix>-<nrev>-g<gid> is specified,
+       generate VERSION using the specified value.
+    2) If --with-version is not specified in either form and the source
+       directory is inside a git repository, try to generate VERSION via 'git
+       describe' invocations that pattern-match release tags.
+    3) If VERSION is missing, generate it with a bogus version:
+       0.0.0-0-g0000000000000000000000000000000000000000
+
+    Note that --with-version=VERSION bypasses (1) and (2), which simplifies
+    VERSION configuration when embedding a jemalloc release into another
+    project's git repository.
+
+* `--with-rpath=<colon-separated-rpath>`
+
+    Embed one or more library paths, so that libjemalloc can find the libraries
+    it is linked to.  This works only on ELF-based systems.
+
+* `--with-mangling=<map>`
+
+    Mangle public symbols specified in <map> which is a comma-separated list of
+    name:mangled pairs.
+
+    For example, to use ld's --wrap option as an alternative method for
+    overriding libc's malloc implementation, specify something like:
+
+      --with-mangling=malloc:__wrap_malloc,free:__wrap_free[...]
+
+    Note that mangling happens prior to application of the prefix specified by
+    --with-jemalloc-prefix, and mangled symbols are then ignored when applying
+    the prefix.
+
+* `--with-jemalloc-prefix=<prefix>`
+
+    Prefix all public APIs with <prefix>.  For example, if <prefix> is
+    "prefix_", API changes like the following occur:
+
+      malloc()         --> prefix_malloc()
+      malloc_conf      --> prefix_malloc_conf
+      /etc/malloc.conf --> /etc/prefix_malloc.conf
+      MALLOC_CONF      --> PREFIX_MALLOC_CONF
+
+    This makes it possible to use jemalloc at the same time as the system
+    allocator, or even to use multiple copies of jemalloc simultaneously.
+
+    By default, the prefix is "", except on OS X, where it is "je_".  On OS X,
+    jemalloc overlays the default malloc zone, but makes no attempt to actually
+    replace the "malloc", "calloc", etc. symbols.
+
+* `--without-export`
+
+    Don't export public APIs.  This can be useful when building jemalloc as a
+    static library, or to avoid exporting public APIs when using the zone
+    allocator on OSX.
+
+* `--with-private-namespace=<prefix>`
+
+    Prefix all library-private APIs with <prefix>je_.  For shared libraries,
+    symbol visibility mechanisms prevent these symbols from being exported, but
+    for static libraries, naming collisions are a real possibility.  By
+    default, <prefix> is empty, which results in a symbol prefix of je_ .
+
+* `--with-install-suffix=<suffix>`
+
+    Append <suffix> to the base name of all installed files, such that multiple
+    versions of jemalloc can coexist in the same installation directory.  For
+    example, libjemalloc.so.0 becomes libjemalloc<suffix>.so.0.
+
+* `--with-malloc-conf=<malloc_conf>`
+
+    Embed `<malloc_conf>` as a run-time options string that is processed prior to
+    the malloc_conf global variable, the /etc/malloc.conf symlink, and the
+    MALLOC_CONF environment variable.  For example, to change the default decay
+    time to 30 seconds:
+
+      --with-malloc-conf=decay_ms:30000
+
+* `--enable-debug`
+
+    Enable assertions and validation code.  This incurs a substantial
+    performance hit, but is very useful during application development.
+
+* `--disable-stats`
+
+    Disable statistics gathering functionality.  See the "opt.stats_print"
+    option documentation for usage details.
+
+* `--enable-prof`
+
+    Enable heap profiling and leak detection functionality.  See the "opt.prof"
+    option documentation for usage details.  When enabled, there are several
+    approaches to backtracing, and the configure script chooses the first one
+    in the following list that appears to function correctly:
+
+    + libunwind      (requires --enable-prof-libunwind)
+    + libgcc         (unless --disable-prof-libgcc)
+    + gcc intrinsics (unless --disable-prof-gcc)
+
+* `--enable-prof-libunwind`
+
+    Use the libunwind library (http://www.nongnu.org/libunwind/) for stack
+    backtracing.
+
+* `--disable-prof-libgcc`
+
+    Disable the use of libgcc's backtracing functionality.
+
+* `--disable-prof-gcc`
+
+    Disable the use of gcc intrinsics for backtracing.
+
+* `--with-static-libunwind=<libunwind.a>`
+
+    Statically link against the specified libunwind.a rather than dynamically
+    linking with -lunwind.
+
+* `--disable-fill`
+
+    Disable support for junk/zero filling of memory.  See the "opt.junk" and
+    "opt.zero" option documentation for usage details.
+
+* `--disable-zone-allocator`
+
+    Disable zone allocator for Darwin.  This means jemalloc won't be hooked as
+    the default allocator on OSX/iOS.
+
+* `--enable-utrace`
+
+    Enable utrace(2)-based allocation tracing.  This feature is not broadly
+    portable (FreeBSD has it, but Linux and OS X do not).
+
+* `--enable-xmalloc`
+
+    Enable support for optional immediate termination due to out-of-memory
+    errors, as is commonly implemented by "xmalloc" wrapper function for malloc.
+    See the "opt.xmalloc" option documentation for usage details.
+
+* `--enable-lazy-lock`
+
+    Enable code that wraps pthread_create() to detect when an application
+    switches from single-threaded to multi-threaded mode, so that it can avoid
+    mutex locking/unlocking operations while in single-threaded mode.  In
+    practice, this feature usually has little impact on performance unless
+    thread-specific caching is disabled.
+
+* `--disable-cache-oblivious`
+
+    Disable cache-oblivious large allocation alignment by default, for large
+    allocation requests with no alignment constraints.  If this feature is
+    disabled, all large allocations are page-aligned as an implementation
+    artifact, which can severely harm CPU cache utilization.  However, the
+    cache-oblivious layout comes at the cost of one extra page per large
+    allocation, which in the most extreme case increases physical memory usage
+    for the 16 KiB size class to 20 KiB.
+
+* `--disable-syscall`
+
+    Disable use of syscall(2) rather than {open,read,write,close}(2).  This is
+    intended as a workaround for systems that place security limitations on
+    syscall(2).
+
+* `--disable-cxx`
+
+    Disable C++ integration.  This will cause new and delete operator
+    implementations to be omitted.
+
+* `--with-xslroot=<path>`
+
+    Specify where to find DocBook XSL stylesheets when building the
+    documentation.
+
+* `--with-lg-page=<lg-page>`
+
+    Specify the base 2 log of the allocator page size, which must in turn be at
+    least as large as the system page size.  By default the configure script
+    determines the host's page size and sets the allocator page size equal to
+    the system page size, so this option need not be specified unless the
+    system page size may change between configuration and execution, e.g. when
+    cross compiling.
+
+* `--with-lg-hugepage=<lg-hugepage>`
+
+    Specify the base 2 log of the system huge page size.  This option is useful
+    when cross compiling, or when overriding the default for systems that do
+    not explicitly support huge pages.
+
+* `--with-lg-quantum=<lg-quantum>`
+
+    Specify the base 2 log of the minimum allocation alignment.  jemalloc needs
+    to know the minimum alignment that meets the following C standard
+    requirement (quoted from the April 12, 2011 draft of the C11 standard):
+
+    >  The pointer returned if the allocation succeeds is suitably aligned so
+      that it may be assigned to a pointer to any type of object with a
+      fundamental alignment requirement and then used to access such an object
+      or an array of such objects in the space allocated [...]
+
+    This setting is architecture-specific, and although jemalloc includes known
+    safe values for the most commonly used modern architectures, there is a
+    wrinkle related to GNU libc (glibc) that may impact your choice of
+    <lg-quantum>.  On most modern architectures, this mandates 16-byte
+    alignment (<lg-quantum>=4), but the glibc developers chose not to meet this
+    requirement for performance reasons.  An old discussion can be found at
+    <https://sourceware.org/bugzilla/show_bug.cgi?id=206> .  Unlike glibc,
+    jemalloc does follow the C standard by default (caveat: jemalloc
+    technically cheats for size classes smaller than the quantum), but the fact
+    that Linux systems already work around this allocator noncompliance means
+    that it is generally safe in practice to let jemalloc's minimum alignment
+    follow glibc's lead.  If you specify `--with-lg-quantum=3` during
+    configuration, jemalloc will provide additional size classes that are not
+    16-byte-aligned (24, 40, and 56).
+
+* `--with-lg-vaddr=<lg-vaddr>`
+
+    Specify the number of significant virtual address bits.  By default, the
+    configure script attempts to detect virtual address size on those platforms
+    where it knows how, and picks a default otherwise.  This option may be
+    useful when cross-compiling.
+
+* `--disable-initial-exec-tls`
+
+    Disable the initial-exec TLS model for jemalloc's internal thread-local
+    storage (on those platforms that support explicit settings).  This can allow
+    jemalloc to be dynamically loaded after program startup (e.g. using dlopen).
+    Note that in this case, there will be two malloc implementations operating
+    in the same process, which will almost certainly result in confusing runtime
+    crashes if pointers leak from one implementation to the other.
+
+* `--disable-libdl`
+
+    Disable the usage of libdl, namely dlsym(3) which is required by the lazy
+    lock option.  This can allow building static binaries.
+
+The following environment variables (not a definitive list) impact configure's
+behavior:
+
+* `CFLAGS="?"`
+* `CXXFLAGS="?"`
+
+    Pass these flags to the C/C++ compiler.  Any flags set by the configure
+    script are prepended, which means explicitly set flags generally take
+    precedence.  Take care when specifying flags such as -Werror, because
+    configure tests may be affected in undesirable ways.
+
+* `EXTRA_CFLAGS="?"`
+* `EXTRA_CXXFLAGS="?"`
+
+    Append these flags to CFLAGS/CXXFLAGS, without passing them to the
+    compiler(s) during configuration.  This makes it possible to add flags such
+    as -Werror, while allowing the configure script to determine what other
+    flags are appropriate for the specified configuration.
+
+* `CPPFLAGS="?"`
+
+    Pass these flags to the C preprocessor.  Note that CFLAGS is not passed to
+    'cpp' when 'configure' is looking for include files, so you must use
+    CPPFLAGS instead if you need to help 'configure' find header files.
+
+* `LD_LIBRARY_PATH="?"`
+
+    'ld' uses this colon-separated list to find libraries.
+
+* `LDFLAGS="?"`
+
+    Pass these flags when linking.
+
+* `PATH="?"`
+
+    'configure' uses this to find programs.
+
+In some cases it may be necessary to work around configuration results that do
+not match reality.  For example, Linux 4.5 added support for the MADV_FREE flag
+to madvise(2), which can cause problems if building on a host with MADV_FREE
+support and deploying to a target without.  To work around this, use a cache
+file to override the relevant configuration variable defined in configure.ac,
+e.g.:
+
+    echo "je_cv_madv_free=no" > config.cache && ./configure -C
+
+
+## Advanced compilation
+
+To build only parts of jemalloc, use the following targets:
+
+    build_lib_shared
+    build_lib_static
+    build_lib
+    build_doc_html
+    build_doc_man
+    build_doc
+
+To install only parts of jemalloc, use the following targets:
+
+    install_bin
+    install_include
+    install_lib_shared
+    install_lib_static
+    install_lib_pc
+    install_lib
+    install_doc_html
+    install_doc_man
+    install_doc
+
+To clean up build results to varying degrees, use the following make targets:
+
+    clean
+    distclean
+    relclean
+
+
+## Advanced installation
+
+Optionally, define make variables when invoking make, including (not
+exclusively):
+
+* `INCLUDEDIR="?"`
+
+    Use this as the installation prefix for header files.
+
+* `LIBDIR="?"`
+
+    Use this as the installation prefix for libraries.
+
+* `MANDIR="?"`
+
+    Use this as the installation prefix for man pages.
+
+* `DESTDIR="?"`
+
+    Prepend DESTDIR to INCLUDEDIR, LIBDIR, DATADIR, and MANDIR.  This is useful
+    when installing to a different path than was specified via --prefix.
+
+* `CC="?"`
+
+    Use this to invoke the C compiler.
+
+* `CFLAGS="?"`
+
+    Pass these flags to the compiler.
+
+* `CPPFLAGS="?"`
+
+    Pass these flags to the C preprocessor.
+
+* `LDFLAGS="?"`
+
+    Pass these flags when linking.
+
+* `PATH="?"`
+
+    Use this to search for programs used during configuration and building.
+
+
+## Development
+
+If you intend to make non-trivial changes to jemalloc, use the 'autogen.sh'
+script rather than 'configure'.  This re-generates 'configure', enables
+configuration dependency rules, and enables re-generation of automatically
+generated source files.
+
+The build system supports using an object directory separate from the source
+tree.  For example, you can create an 'obj' directory, and from within that
+directory, issue configuration and build commands:
+
+    autoconf
+    mkdir obj
+    cd obj
+    ../configure --enable-autogen
+    make
+
+
+## Documentation
+
+The manual page is generated in both html and roff formats.  Any web browser
+can be used to view the html manual.  The roff manual page can be formatted
+prior to installation via the following command:
+
+    nroff -man -t doc/jemalloc.3
diff --git a/deps/jemalloc/Makefile.in b/deps/jemalloc/Makefile.in
new file mode 100644
index 0000000..1193cd8
--- /dev/null
+++ b/deps/jemalloc/Makefile.in
@@ -0,0 +1,762 @@
+# Clear out all vpaths, then set just one (default vpath) for the main build
+# directory.
+vpath
+vpath % .
+
+# Clear the default suffixes, so that built-in rules are not used.
+.SUFFIXES :
+
+SHELL := /bin/sh
+
+CC := @CC@
+CXX := @CXX@
+
+# Configuration parameters.
+DESTDIR =
+BINDIR := $(DESTDIR)@BINDIR@
+INCLUDEDIR := $(DESTDIR)@INCLUDEDIR@
+LIBDIR := $(DESTDIR)@LIBDIR@
+DATADIR := $(DESTDIR)@DATADIR@
+MANDIR := $(DESTDIR)@MANDIR@
+srcroot := @srcroot@
+objroot := @objroot@
+abs_srcroot := @abs_srcroot@
+abs_objroot := @abs_objroot@
+
+# Build parameters.
+CPPFLAGS := @CPPFLAGS@ -I$(objroot)include -I$(srcroot)include
+CONFIGURE_CFLAGS := @CONFIGURE_CFLAGS@
+SPECIFIED_CFLAGS := @SPECIFIED_CFLAGS@
+EXTRA_CFLAGS := @EXTRA_CFLAGS@
+CFLAGS := $(strip $(CONFIGURE_CFLAGS) $(SPECIFIED_CFLAGS) $(EXTRA_CFLAGS))
+CONFIGURE_CXXFLAGS := @CONFIGURE_CXXFLAGS@
+SPECIFIED_CXXFLAGS := @SPECIFIED_CXXFLAGS@
+EXTRA_CXXFLAGS := @EXTRA_CXXFLAGS@
+CXXFLAGS := $(strip $(CONFIGURE_CXXFLAGS) $(SPECIFIED_CXXFLAGS) $(EXTRA_CXXFLAGS))
+LDFLAGS := @LDFLAGS@
+EXTRA_LDFLAGS := @EXTRA_LDFLAGS@
+LIBS := @LIBS@
+RPATH_EXTRA := @RPATH_EXTRA@
+SO := @so@
+IMPORTLIB := @importlib@
+O := @o@
+A := @a@
+EXE := @exe@
+LIBPREFIX := @libprefix@
+REV := @rev@
+install_suffix := @install_suffix@
+ABI := @abi@
+XSLTPROC := @XSLTPROC@
+XSLROOT := @XSLROOT@
+AUTOCONF := @AUTOCONF@
+_RPATH = @RPATH@
+RPATH = $(if $(1),$(call _RPATH,$(1)))
+cfghdrs_in := $(addprefix $(srcroot),@cfghdrs_in@)
+cfghdrs_out := @cfghdrs_out@
+cfgoutputs_in := $(addprefix $(srcroot),@cfgoutputs_in@)
+cfgoutputs_out := @cfgoutputs_out@
+enable_autogen := @enable_autogen@
+enable_doc := @enable_doc@
+enable_shared := @enable_shared@
+enable_static := @enable_static@
+enable_prof := @enable_prof@
+enable_zone_allocator := @enable_zone_allocator@
+enable_experimental_smallocx := @enable_experimental_smallocx@
+MALLOC_CONF := @JEMALLOC_CPREFIX@MALLOC_CONF
+link_whole_archive := @link_whole_archive@
+DSO_LDFLAGS = @DSO_LDFLAGS@
+SOREV = @SOREV@
+PIC_CFLAGS = @PIC_CFLAGS@
+CTARGET = @CTARGET@
+LDTARGET = @LDTARGET@
+TEST_LD_MODE = @TEST_LD_MODE@
+MKLIB = @MKLIB@
+AR = @AR@
+ARFLAGS = @ARFLAGS@
+DUMP_SYMS = @DUMP_SYMS@
+AWK := @AWK@
+CC_MM = @CC_MM@
+LM := @LM@
+INSTALL = @INSTALL@
+
+ifeq (macho, $(ABI))
+TEST_LIBRARY_PATH := DYLD_FALLBACK_LIBRARY_PATH="$(objroot)lib"
+else
+ifeq (pecoff, $(ABI))
+TEST_LIBRARY_PATH := PATH="$(PATH):$(objroot)lib"
+else
+TEST_LIBRARY_PATH :=
+endif
+endif
+
+LIBJEMALLOC := $(LIBPREFIX)jemalloc$(install_suffix)
+
+# Lists of files.
+BINS := $(objroot)bin/jemalloc-config $(objroot)bin/jemalloc.sh $(objroot)bin/jeprof
+C_HDRS := $(objroot)include/jemalloc/jemalloc$(install_suffix).h
+C_SRCS := $(srcroot)src/jemalloc.c \
+	$(srcroot)src/arena.c \
+	$(srcroot)src/background_thread.c \
+	$(srcroot)src/base.c \
+	$(srcroot)src/bin.c \
+	$(srcroot)src/bin_info.c \
+	$(srcroot)src/bitmap.c \
+	$(srcroot)src/buf_writer.c \
+	$(srcroot)src/cache_bin.c \
+	$(srcroot)src/ckh.c \
+	$(srcroot)src/counter.c \
+	$(srcroot)src/ctl.c \
+	$(srcroot)src/decay.c \
+	$(srcroot)src/div.c \
+	$(srcroot)src/ecache.c \
+	$(srcroot)src/edata.c \
+	$(srcroot)src/edata_cache.c \
+	$(srcroot)src/ehooks.c \
+	$(srcroot)src/emap.c \
+	$(srcroot)src/eset.c \
+	$(srcroot)src/exp_grow.c \
+	$(srcroot)src/extent.c \
+	$(srcroot)src/extent_dss.c \
+	$(srcroot)src/extent_mmap.c \
+	$(srcroot)src/fxp.c \
+	$(srcroot)src/san.c \
+	$(srcroot)src/san_bump.c \
+	$(srcroot)src/hook.c \
+	$(srcroot)src/hpa.c \
+	$(srcroot)src/hpa_hooks.c \
+	$(srcroot)src/hpdata.c \
+	$(srcroot)src/inspect.c \
+	$(srcroot)src/large.c \
+	$(srcroot)src/log.c \
+	$(srcroot)src/malloc_io.c \
+	$(srcroot)src/mutex.c \
+	$(srcroot)src/nstime.c \
+	$(srcroot)src/pa.c \
+	$(srcroot)src/pa_extra.c \
+	$(srcroot)src/pai.c \
+	$(srcroot)src/pac.c \
+	$(srcroot)src/pages.c \
+	$(srcroot)src/peak_event.c \
+	$(srcroot)src/prof.c \
+	$(srcroot)src/prof_data.c \
+	$(srcroot)src/prof_log.c \
+	$(srcroot)src/prof_recent.c \
+	$(srcroot)src/prof_stats.c \
+	$(srcroot)src/prof_sys.c \
+	$(srcroot)src/psset.c \
+	$(srcroot)src/rtree.c \
+	$(srcroot)src/safety_check.c \
+	$(srcroot)src/sc.c \
+	$(srcroot)src/sec.c \
+	$(srcroot)src/stats.c \
+	$(srcroot)src/sz.c \
+	$(srcroot)src/tcache.c \
+	$(srcroot)src/test_hooks.c \
+	$(srcroot)src/thread_event.c \
+	$(srcroot)src/ticker.c \
+	$(srcroot)src/tsd.c \
+	$(srcroot)src/witness.c
+ifeq ($(enable_zone_allocator), 1)
+C_SRCS += $(srcroot)src/zone.c
+endif
+ifeq ($(IMPORTLIB),$(SO))
+STATIC_LIBS := $(objroot)lib/$(LIBJEMALLOC).$(A)
+endif
+ifdef PIC_CFLAGS
+STATIC_LIBS += $(objroot)lib/$(LIBJEMALLOC)_pic.$(A)
+else
+STATIC_LIBS += $(objroot)lib/$(LIBJEMALLOC)_s.$(A)
+endif
+DSOS := $(objroot)lib/$(LIBJEMALLOC).$(SOREV)
+ifneq ($(SOREV),$(SO))
+DSOS += $(objroot)lib/$(LIBJEMALLOC).$(SO)
+endif
+ifeq (1, $(link_whole_archive))
+LJEMALLOC := -Wl,--whole-archive -L$(objroot)lib -l$(LIBJEMALLOC) -Wl,--no-whole-archive
+else
+LJEMALLOC := $(objroot)lib/$(LIBJEMALLOC).$(IMPORTLIB)
+endif
+PC := $(objroot)jemalloc.pc
+DOCS_XML := $(objroot)doc/jemalloc$(install_suffix).xml
+DOCS_HTML := $(DOCS_XML:$(objroot)%.xml=$(objroot)%.html)
+DOCS_MAN3 := $(DOCS_XML:$(objroot)%.xml=$(objroot)%.3)
+DOCS := $(DOCS_HTML) $(DOCS_MAN3)
+C_TESTLIB_SRCS := $(srcroot)test/src/btalloc.c $(srcroot)test/src/btalloc_0.c \
+	$(srcroot)test/src/btalloc_1.c $(srcroot)test/src/math.c \
+	$(srcroot)test/src/mtx.c $(srcroot)test/src/sleep.c \
+	$(srcroot)test/src/SFMT.c $(srcroot)test/src/test.c \
+	$(srcroot)test/src/thd.c $(srcroot)test/src/timer.c
+ifeq (1, $(link_whole_archive))
+C_UTIL_INTEGRATION_SRCS :=
+C_UTIL_CPP_SRCS :=
+else
+C_UTIL_INTEGRATION_SRCS := $(srcroot)src/nstime.c $(srcroot)src/malloc_io.c \
+	$(srcroot)src/ticker.c
+C_UTIL_CPP_SRCS := $(srcroot)src/nstime.c $(srcroot)src/malloc_io.c
+endif
+TESTS_UNIT := \
+	$(srcroot)test/unit/a0.c \
+	$(srcroot)test/unit/arena_decay.c \
+	$(srcroot)test/unit/arena_reset.c \
+	$(srcroot)test/unit/atomic.c \
+	$(srcroot)test/unit/background_thread.c \
+	$(srcroot)test/unit/background_thread_enable.c \
+	$(srcroot)test/unit/base.c \
+	$(srcroot)test/unit/batch_alloc.c \
+	$(srcroot)test/unit/binshard.c \
+	$(srcroot)test/unit/bitmap.c \
+	$(srcroot)test/unit/bit_util.c \
+	$(srcroot)test/unit/buf_writer.c \
+	$(srcroot)test/unit/cache_bin.c \
+	$(srcroot)test/unit/ckh.c \
+	$(srcroot)test/unit/counter.c \
+	$(srcroot)test/unit/decay.c \
+	$(srcroot)test/unit/div.c \
+	$(srcroot)test/unit/double_free.c \
+	$(srcroot)test/unit/edata_cache.c \
+	$(srcroot)test/unit/emitter.c \
+	$(srcroot)test/unit/extent_quantize.c \
+	${srcroot}test/unit/fb.c \
+	$(srcroot)test/unit/fork.c \
+	${srcroot}test/unit/fxp.c \
+	${srcroot}test/unit/san.c \
+	${srcroot}test/unit/san_bump.c \
+	$(srcroot)test/unit/hash.c \
+	$(srcroot)test/unit/hook.c \
+	$(srcroot)test/unit/hpa.c \
+	$(srcroot)test/unit/hpa_background_thread.c \
+	$(srcroot)test/unit/hpdata.c \
+	$(srcroot)test/unit/huge.c \
+	$(srcroot)test/unit/inspect.c \
+	$(srcroot)test/unit/junk.c \
+	$(srcroot)test/unit/junk_alloc.c \
+	$(srcroot)test/unit/junk_free.c \
+	$(srcroot)test/unit/log.c \
+	$(srcroot)test/unit/mallctl.c \
+	$(srcroot)test/unit/malloc_conf_2.c \
+	$(srcroot)test/unit/malloc_io.c \
+	$(srcroot)test/unit/math.c \
+	$(srcroot)test/unit/mpsc_queue.c \
+	$(srcroot)test/unit/mq.c \
+	$(srcroot)test/unit/mtx.c \
+	$(srcroot)test/unit/nstime.c \
+	$(srcroot)test/unit/oversize_threshold.c \
+	$(srcroot)test/unit/pa.c \
+	$(srcroot)test/unit/pack.c \
+	$(srcroot)test/unit/pages.c \
+	$(srcroot)test/unit/peak.c \
+	$(srcroot)test/unit/ph.c \
+	$(srcroot)test/unit/prng.c \
+	$(srcroot)test/unit/prof_accum.c \
+	$(srcroot)test/unit/prof_active.c \
+	$(srcroot)test/unit/prof_gdump.c \
+	$(srcroot)test/unit/prof_hook.c \
+	$(srcroot)test/unit/prof_idump.c \
+	$(srcroot)test/unit/prof_log.c \
+	$(srcroot)test/unit/prof_mdump.c \
+	$(srcroot)test/unit/prof_recent.c \
+	$(srcroot)test/unit/prof_reset.c \
+	$(srcroot)test/unit/prof_stats.c \
+	$(srcroot)test/unit/prof_tctx.c \
+	$(srcroot)test/unit/prof_thread_name.c \
+	$(srcroot)test/unit/prof_sys_thread_name.c \
+	$(srcroot)test/unit/psset.c \
+	$(srcroot)test/unit/ql.c \
+	$(srcroot)test/unit/qr.c \
+	$(srcroot)test/unit/rb.c \
+	$(srcroot)test/unit/retained.c \
+	$(srcroot)test/unit/rtree.c \
+	$(srcroot)test/unit/safety_check.c \
+	$(srcroot)test/unit/sc.c \
+	$(srcroot)test/unit/sec.c \
+	$(srcroot)test/unit/seq.c \
+	$(srcroot)test/unit/SFMT.c \
+	$(srcroot)test/unit/size_check.c \
+	$(srcroot)test/unit/size_classes.c \
+	$(srcroot)test/unit/slab.c \
+	$(srcroot)test/unit/smoothstep.c \
+	$(srcroot)test/unit/spin.c \
+	$(srcroot)test/unit/stats.c \
+	$(srcroot)test/unit/stats_print.c \
+	$(srcroot)test/unit/sz.c \
+	$(srcroot)test/unit/tcache_max.c \
+	$(srcroot)test/unit/test_hooks.c \
+	$(srcroot)test/unit/thread_event.c \
+	$(srcroot)test/unit/ticker.c \
+	$(srcroot)test/unit/tsd.c \
+	$(srcroot)test/unit/uaf.c \
+	$(srcroot)test/unit/witness.c \
+	$(srcroot)test/unit/zero.c \
+	$(srcroot)test/unit/zero_realloc_abort.c \
+	$(srcroot)test/unit/zero_realloc_free.c \
+	$(srcroot)test/unit/zero_realloc_alloc.c \
+	$(srcroot)test/unit/zero_reallocs.c
+ifeq (@enable_prof@, 1)
+TESTS_UNIT += \
+	$(srcroot)test/unit/arena_reset_prof.c \
+	$(srcroot)test/unit/batch_alloc_prof.c
+endif
+TESTS_INTEGRATION := $(srcroot)test/integration/aligned_alloc.c \
+	$(srcroot)test/integration/allocated.c \
+	$(srcroot)test/integration/extent.c \
+	$(srcroot)test/integration/malloc.c \
+	$(srcroot)test/integration/mallocx.c \
+	$(srcroot)test/integration/MALLOCX_ARENA.c \
+	$(srcroot)test/integration/overflow.c \
+	$(srcroot)test/integration/posix_memalign.c \
+	$(srcroot)test/integration/rallocx.c \
+	$(srcroot)test/integration/sdallocx.c \
+	$(srcroot)test/integration/slab_sizes.c \
+	$(srcroot)test/integration/thread_arena.c \
+	$(srcroot)test/integration/thread_tcache_enabled.c \
+	$(srcroot)test/integration/xallocx.c
+ifeq (@enable_experimental_smallocx@, 1)
+TESTS_INTEGRATION += \
+  $(srcroot)test/integration/smallocx.c
+endif
+ifeq (@enable_cxx@, 1)
+CPP_SRCS := $(srcroot)src/jemalloc_cpp.cpp
+TESTS_INTEGRATION_CPP := $(srcroot)test/integration/cpp/basic.cpp \
+	$(srcroot)test/integration/cpp/infallible_new_true.cpp \
+	$(srcroot)test/integration/cpp/infallible_new_false.cpp
+else
+CPP_SRCS :=
+TESTS_INTEGRATION_CPP :=
+endif
+TESTS_ANALYZE := $(srcroot)test/analyze/prof_bias.c \
+	$(srcroot)test/analyze/rand.c \
+	$(srcroot)test/analyze/sizes.c
+TESTS_STRESS := $(srcroot)test/stress/batch_alloc.c \
+	$(srcroot)test/stress/fill_flush.c \
+	$(srcroot)test/stress/hookbench.c \
+	$(srcroot)test/stress/large_microbench.c \
+	$(srcroot)test/stress/mallctl.c \
+	$(srcroot)test/stress/microbench.c
+
+
+TESTS := $(TESTS_UNIT) $(TESTS_INTEGRATION) $(TESTS_INTEGRATION_CPP) \
+	$(TESTS_ANALYZE) $(TESTS_STRESS)
+
+PRIVATE_NAMESPACE_HDRS := $(objroot)include/jemalloc/internal/private_namespace.h $(objroot)include/jemalloc/internal/private_namespace_jet.h
+PRIVATE_NAMESPACE_GEN_HDRS := $(PRIVATE_NAMESPACE_HDRS:%.h=%.gen.h)
+C_SYM_OBJS := $(C_SRCS:$(srcroot)%.c=$(objroot)%.sym.$(O))
+C_SYMS := $(C_SRCS:$(srcroot)%.c=$(objroot)%.sym)
+C_OBJS := $(C_SRCS:$(srcroot)%.c=$(objroot)%.$(O))
+CPP_OBJS := $(CPP_SRCS:$(srcroot)%.cpp=$(objroot)%.$(O))
+C_PIC_OBJS := $(C_SRCS:$(srcroot)%.c=$(objroot)%.pic.$(O))
+CPP_PIC_OBJS := $(CPP_SRCS:$(srcroot)%.cpp=$(objroot)%.pic.$(O))
+C_JET_SYM_OBJS := $(C_SRCS:$(srcroot)%.c=$(objroot)%.jet.sym.$(O))
+C_JET_SYMS := $(C_SRCS:$(srcroot)%.c=$(objroot)%.jet.sym)
+C_JET_OBJS := $(C_SRCS:$(srcroot)%.c=$(objroot)%.jet.$(O))
+C_TESTLIB_UNIT_OBJS := $(C_TESTLIB_SRCS:$(srcroot)%.c=$(objroot)%.unit.$(O))
+C_TESTLIB_INTEGRATION_OBJS := $(C_TESTLIB_SRCS:$(srcroot)%.c=$(objroot)%.integration.$(O))
+C_UTIL_INTEGRATION_OBJS := $(C_UTIL_INTEGRATION_SRCS:$(srcroot)%.c=$(objroot)%.integration.$(O))
+C_TESTLIB_ANALYZE_OBJS := $(C_TESTLIB_SRCS:$(srcroot)%.c=$(objroot)%.analyze.$(O))
+C_TESTLIB_STRESS_OBJS := $(C_TESTLIB_SRCS:$(srcroot)%.c=$(objroot)%.stress.$(O))
+C_TESTLIB_OBJS := $(C_TESTLIB_UNIT_OBJS) $(C_TESTLIB_INTEGRATION_OBJS) \
+	$(C_UTIL_INTEGRATION_OBJS) $(C_TESTLIB_ANALYZE_OBJS) \
+	$(C_TESTLIB_STRESS_OBJS)
+
+TESTS_UNIT_OBJS := $(TESTS_UNIT:$(srcroot)%.c=$(objroot)%.$(O))
+TESTS_INTEGRATION_OBJS := $(TESTS_INTEGRATION:$(srcroot)%.c=$(objroot)%.$(O))
+TESTS_INTEGRATION_CPP_OBJS := $(TESTS_INTEGRATION_CPP:$(srcroot)%.cpp=$(objroot)%.$(O))
+TESTS_ANALYZE_OBJS := $(TESTS_ANALYZE:$(srcroot)%.c=$(objroot)%.$(O))
+TESTS_STRESS_OBJS := $(TESTS_STRESS:$(srcroot)%.c=$(objroot)%.$(O))
+TESTS_OBJS := $(TESTS_UNIT_OBJS) $(TESTS_INTEGRATION_OBJS) $(TESTS_ANALYZE_OBJS) \
+	$(TESTS_STRESS_OBJS)
+TESTS_CPP_OBJS := $(TESTS_INTEGRATION_CPP_OBJS)
+
+.PHONY: all dist build_doc_html build_doc_man build_doc
+.PHONY: install_bin install_include install_lib
+.PHONY: install_doc_html install_doc_man install_doc install
+.PHONY: tests check clean distclean relclean
+
+.SECONDARY : $(PRIVATE_NAMESPACE_GEN_HDRS) $(TESTS_OBJS) $(TESTS_CPP_OBJS)
+
+# Default target.
+all: build_lib
+
+dist: build_doc
+
+$(objroot)doc/%$(install_suffix).html : $(objroot)doc/%.xml $(srcroot)doc/stylesheet.xsl $(objroot)doc/html.xsl
+ifneq ($(XSLROOT),)
+	$(XSLTPROC) -o $@ $(objroot)doc/html.xsl $<
+else
+ifeq ($(wildcard $(DOCS_HTML)),)
+	@echo "<p>Missing xsltproc.  Doc not built.</p>" > $@
+endif
+	@echo "Missing xsltproc.  "$@" not (re)built."
+endif
+
+$(objroot)doc/%$(install_suffix).3 : $(objroot)doc/%.xml $(srcroot)doc/stylesheet.xsl $(objroot)doc/manpages.xsl
+ifneq ($(XSLROOT),)
+	$(XSLTPROC) -o $@ $(objroot)doc/manpages.xsl $<
+# The -o option (output filename) of xsltproc may not work (it uses the
+# <refname> in the .xml file).  Manually add the suffix if so.
+  ifneq ($(install_suffix),)
+	@if [ -f $(objroot)doc/jemalloc.3 ]; then \
+		mv $(objroot)doc/jemalloc.3 $(objroot)doc/jemalloc$(install_suffix).3 ; \
+	fi
+  endif
+else
+ifeq ($(wildcard $(DOCS_MAN3)),)
+	@echo "Missing xsltproc.  Doc not built." > $@
+endif
+	@echo "Missing xsltproc.  "$@" not (re)built."
+endif
+
+build_doc_html: $(DOCS_HTML)
+build_doc_man: $(DOCS_MAN3)
+build_doc: $(DOCS)
+
+#
+# Include generated dependency files.
+#
+ifdef CC_MM
+-include $(C_SYM_OBJS:%.$(O)=%.d)
+-include $(C_OBJS:%.$(O)=%.d)
+-include $(CPP_OBJS:%.$(O)=%.d)
+-include $(C_PIC_OBJS:%.$(O)=%.d)
+-include $(CPP_PIC_OBJS:%.$(O)=%.d)
+-include $(C_JET_SYM_OBJS:%.$(O)=%.d)
+-include $(C_JET_OBJS:%.$(O)=%.d)
+-include $(C_TESTLIB_OBJS:%.$(O)=%.d)
+-include $(TESTS_OBJS:%.$(O)=%.d)
+-include $(TESTS_CPP_OBJS:%.$(O)=%.d)
+endif
+
+$(C_SYM_OBJS): $(objroot)src/%.sym.$(O): $(srcroot)src/%.c
+$(C_SYM_OBJS): CPPFLAGS += -DJEMALLOC_NO_PRIVATE_NAMESPACE
+$(C_SYMS): $(objroot)src/%.sym: $(objroot)src/%.sym.$(O)
+$(C_OBJS): $(objroot)src/%.$(O): $(srcroot)src/%.c
+$(CPP_OBJS): $(objroot)src/%.$(O): $(srcroot)src/%.cpp
+$(C_PIC_OBJS): $(objroot)src/%.pic.$(O): $(srcroot)src/%.c
+$(C_PIC_OBJS): CFLAGS += $(PIC_CFLAGS)
+$(CPP_PIC_OBJS): $(objroot)src/%.pic.$(O): $(srcroot)src/%.cpp
+$(CPP_PIC_OBJS): CXXFLAGS += $(PIC_CFLAGS)
+$(C_JET_SYM_OBJS): $(objroot)src/%.jet.sym.$(O): $(srcroot)src/%.c
+$(C_JET_SYM_OBJS): CPPFLAGS += -DJEMALLOC_JET -DJEMALLOC_NO_PRIVATE_NAMESPACE
+$(C_JET_SYMS): $(objroot)src/%.jet.sym: $(objroot)src/%.jet.sym.$(O)
+$(C_JET_OBJS): $(objroot)src/%.jet.$(O): $(srcroot)src/%.c
+$(C_JET_OBJS): CPPFLAGS += -DJEMALLOC_JET
+$(C_TESTLIB_UNIT_OBJS): $(objroot)test/src/%.unit.$(O): $(srcroot)test/src/%.c
+$(C_TESTLIB_UNIT_OBJS): CPPFLAGS += -DJEMALLOC_UNIT_TEST
+$(C_TESTLIB_INTEGRATION_OBJS): $(objroot)test/src/%.integration.$(O): $(srcroot)test/src/%.c
+$(C_TESTLIB_INTEGRATION_OBJS): CPPFLAGS += -DJEMALLOC_INTEGRATION_TEST
+$(C_UTIL_INTEGRATION_OBJS): $(objroot)src/%.integration.$(O): $(srcroot)src/%.c
+$(C_TESTLIB_ANALYZE_OBJS): $(objroot)test/src/%.analyze.$(O): $(srcroot)test/src/%.c
+$(C_TESTLIB_ANALYZE_OBJS): CPPFLAGS += -DJEMALLOC_ANALYZE_TEST
+$(C_TESTLIB_STRESS_OBJS): $(objroot)test/src/%.stress.$(O): $(srcroot)test/src/%.c
+$(C_TESTLIB_STRESS_OBJS): CPPFLAGS += -DJEMALLOC_STRESS_TEST -DJEMALLOC_STRESS_TESTLIB
+$(C_TESTLIB_OBJS): CPPFLAGS += -I$(srcroot)test/include -I$(objroot)test/include
+$(TESTS_UNIT_OBJS): CPPFLAGS += -DJEMALLOC_UNIT_TEST
+$(TESTS_INTEGRATION_OBJS): CPPFLAGS += -DJEMALLOC_INTEGRATION_TEST
+$(TESTS_INTEGRATION_CPP_OBJS): CPPFLAGS += -DJEMALLOC_INTEGRATION_CPP_TEST
+$(TESTS_ANALYZE_OBJS): CPPFLAGS += -DJEMALLOC_ANALYZE_TEST
+$(TESTS_STRESS_OBJS): CPPFLAGS += -DJEMALLOC_STRESS_TEST
+$(TESTS_OBJS): $(objroot)test/%.$(O): $(srcroot)test/%.c
+$(TESTS_CPP_OBJS): $(objroot)test/%.$(O): $(srcroot)test/%.cpp
+$(TESTS_OBJS): CPPFLAGS += -I$(srcroot)test/include -I$(objroot)test/include
+$(TESTS_CPP_OBJS): CPPFLAGS += -I$(srcroot)test/include -I$(objroot)test/include
+ifneq ($(IMPORTLIB),$(SO))
+$(CPP_OBJS) $(C_SYM_OBJS) $(C_OBJS) $(C_JET_SYM_OBJS) $(C_JET_OBJS): CPPFLAGS += -DDLLEXPORT
+endif
+
+# Dependencies.
+ifndef CC_MM
+HEADER_DIRS = $(srcroot)include/jemalloc/internal \
+	$(objroot)include/jemalloc $(objroot)include/jemalloc/internal
+HEADERS = $(filter-out $(PRIVATE_NAMESPACE_HDRS),$(wildcard $(foreach dir,$(HEADER_DIRS),$(dir)/*.h)))
+$(C_SYM_OBJS) $(C_OBJS) $(CPP_OBJS) $(C_PIC_OBJS) $(CPP_PIC_OBJS) $(C_JET_SYM_OBJS) $(C_JET_OBJS) $(C_TESTLIB_OBJS) $(TESTS_OBJS) $(TESTS_CPP_OBJS): $(HEADERS)
+$(TESTS_OBJS) $(TESTS_CPP_OBJS): $(objroot)test/include/test/jemalloc_test.h
+endif
+
+$(C_OBJS) $(CPP_OBJS) $(C_PIC_OBJS) $(CPP_PIC_OBJS) $(C_TESTLIB_INTEGRATION_OBJS) $(C_UTIL_INTEGRATION_OBJS) $(TESTS_INTEGRATION_OBJS) $(TESTS_INTEGRATION_CPP_OBJS): $(objroot)include/jemalloc/internal/private_namespace.h
+$(C_JET_OBJS) $(C_TESTLIB_UNIT_OBJS) $(C_TESTLIB_ANALYZE_OBJS) $(C_TESTLIB_STRESS_OBJS) $(TESTS_UNIT_OBJS) $(TESTS_ANALYZE_OBJS) $(TESTS_STRESS_OBJS): $(objroot)include/jemalloc/internal/private_namespace_jet.h
+
+$(C_SYM_OBJS) $(C_OBJS) $(C_PIC_OBJS) $(C_JET_SYM_OBJS) $(C_JET_OBJS) $(C_TESTLIB_OBJS) $(TESTS_OBJS): %.$(O):
+	@mkdir -p $(@D)
+	$(CC) $(CFLAGS) -c $(CPPFLAGS) $(CTARGET) $<
+ifdef CC_MM
+	@$(CC) -MM $(CPPFLAGS) -MT $@ -o $(@:%.$(O)=%.d) $<
+endif
+
+$(C_SYMS): %.sym:
+	@mkdir -p $(@D)
+	$(DUMP_SYMS) $< | $(AWK) -f $(objroot)include/jemalloc/internal/private_symbols.awk > $@
+
+$(C_JET_SYMS): %.sym:
+	@mkdir -p $(@D)
+	$(DUMP_SYMS) $< | $(AWK) -f $(objroot)include/jemalloc/internal/private_symbols_jet.awk > $@
+
+$(objroot)include/jemalloc/internal/private_namespace.gen.h: $(C_SYMS)
+	$(SHELL) $(srcroot)include/jemalloc/internal/private_namespace.sh $^ > $@
+
+$(objroot)include/jemalloc/internal/private_namespace_jet.gen.h: $(C_JET_SYMS)
+	$(SHELL) $(srcroot)include/jemalloc/internal/private_namespace.sh $^ > $@
+
+%.h: %.gen.h
+	@if ! `cmp -s $< $@` ; then echo "cp $< $@"; cp $< $@ ; fi
+
+$(CPP_OBJS) $(CPP_PIC_OBJS) $(TESTS_CPP_OBJS): %.$(O):
+	@mkdir -p $(@D)
+	$(CXX) $(CXXFLAGS) -c $(CPPFLAGS) $(CTARGET) $<
+ifdef CC_MM
+	@$(CXX) -MM $(CPPFLAGS) -MT $@ -o $(@:%.$(O)=%.d) $<
+endif
+
+ifneq ($(SOREV),$(SO))
+%.$(SO) : %.$(SOREV)
+	@mkdir -p $(@D)
+	ln -sf $(<F) $@
+endif
+
+$(objroot)lib/$(LIBJEMALLOC).$(SOREV) : $(if $(PIC_CFLAGS),$(C_PIC_OBJS),$(C_OBJS)) $(if $(PIC_CFLAGS),$(CPP_PIC_OBJS),$(CPP_OBJS))
+	@mkdir -p $(@D)
+	$(CC) $(DSO_LDFLAGS) $(call RPATH,$(RPATH_EXTRA)) $(LDTARGET) $+ $(LDFLAGS) $(LIBS) $(EXTRA_LDFLAGS)
+
+$(objroot)lib/$(LIBJEMALLOC)_pic.$(A) : $(C_PIC_OBJS) $(CPP_PIC_OBJS)
+$(objroot)lib/$(LIBJEMALLOC).$(A) : $(C_OBJS) $(CPP_OBJS)
+$(objroot)lib/$(LIBJEMALLOC)_s.$(A) : $(C_OBJS) $(CPP_OBJS)
+
+$(STATIC_LIBS):
+	@mkdir -p $(@D)
+	$(AR) $(ARFLAGS)@AROUT@ $+
+
+$(objroot)test/unit/%$(EXE): $(objroot)test/unit/%.$(O) $(C_JET_OBJS) $(C_TESTLIB_UNIT_OBJS)
+	@mkdir -p $(@D)
+	$(CC) $(LDTARGET) $(filter %.$(O),$^) $(call RPATH,$(objroot)lib) $(LDFLAGS) $(filter-out -lm,$(LIBS)) $(LM) $(EXTRA_LDFLAGS)
+
+$(objroot)test/integration/%$(EXE): $(objroot)test/integration/%.$(O) $(C_TESTLIB_INTEGRATION_OBJS) $(C_UTIL_INTEGRATION_OBJS) $(objroot)lib/$(LIBJEMALLOC).$(IMPORTLIB)
+	@mkdir -p $(@D)
+	$(CC) $(TEST_LD_MODE) $(LDTARGET) $(filter %.$(O),$^) $(call RPATH,$(objroot)lib) $(LJEMALLOC) $(LDFLAGS) $(filter-out -lm,$(filter -lrt -pthread -lstdc++,$(LIBS))) $(LM) $(EXTRA_LDFLAGS)
+
+$(objroot)test/integration/cpp/%$(EXE): $(objroot)test/integration/cpp/%.$(O) $(C_TESTLIB_INTEGRATION_OBJS) $(C_UTIL_INTEGRATION_OBJS) $(objroot)lib/$(LIBJEMALLOC).$(IMPORTLIB)
+	@mkdir -p $(@D)
+	$(CXX) $(LDTARGET) $(filter %.$(O),$^) $(call RPATH,$(objroot)lib) $(objroot)lib/$(LIBJEMALLOC).$(IMPORTLIB) $(LDFLAGS) $(filter-out -lm,$(LIBS)) -lm $(EXTRA_LDFLAGS)
+
+$(objroot)test/analyze/%$(EXE): $(objroot)test/analyze/%.$(O) $(C_JET_OBJS) $(C_TESTLIB_ANALYZE_OBJS)
+	@mkdir -p $(@D)
+	$(CC) $(LDTARGET) $(filter %.$(O),$^) $(call RPATH,$(objroot)lib) $(LDFLAGS) $(filter-out -lm,$(LIBS)) $(LM) $(EXTRA_LDFLAGS)
+
+$(objroot)test/stress/%$(EXE): $(objroot)test/stress/%.$(O) $(C_JET_OBJS) $(C_TESTLIB_STRESS_OBJS) $(objroot)lib/$(LIBJEMALLOC).$(IMPORTLIB)
+	@mkdir -p $(@D)
+	$(CC) $(TEST_LD_MODE) $(LDTARGET) $(filter %.$(O),$^) $(call RPATH,$(objroot)lib) $(objroot)lib/$(LIBJEMALLOC).$(IMPORTLIB) $(LDFLAGS) $(filter-out -lm,$(LIBS)) $(LM) $(EXTRA_LDFLAGS)
+
+build_lib_shared: $(DSOS)
+build_lib_static: $(STATIC_LIBS)
+ifeq ($(enable_shared), 1)
+build_lib: build_lib_shared
+endif
+ifeq ($(enable_static), 1)
+build_lib: build_lib_static
+endif
+
+install_bin:
+	$(INSTALL) -d $(BINDIR)
+	@for b in $(BINS); do \
+	$(INSTALL) -v -m 755 $$b $(BINDIR); \
+done
+
+install_include:
+	$(INSTALL) -d $(INCLUDEDIR)/jemalloc
+	@for h in $(C_HDRS); do \
+	$(INSTALL) -v -m 644 $$h $(INCLUDEDIR)/jemalloc; \
+done
+
+install_lib_shared: $(DSOS)
+	$(INSTALL) -d $(LIBDIR)
+	$(INSTALL) -v -m 755 $(objroot)lib/$(LIBJEMALLOC).$(SOREV) $(LIBDIR)
+ifneq ($(SOREV),$(SO))
+	ln -sf $(LIBJEMALLOC).$(SOREV) $(LIBDIR)/$(LIBJEMALLOC).$(SO)
+endif
+
+install_lib_static: $(STATIC_LIBS)
+	$(INSTALL) -d $(LIBDIR)
+	@for l in $(STATIC_LIBS); do \
+	$(INSTALL) -v -m 755 $$l $(LIBDIR); \
+done
+
+install_lib_pc: $(PC)
+	$(INSTALL) -d $(LIBDIR)/pkgconfig
+	@for l in $(PC); do \
+	$(INSTALL) -v -m 644 $$l $(LIBDIR)/pkgconfig; \
+done
+
+ifeq ($(enable_shared), 1)
+install_lib: install_lib_shared
+endif
+ifeq ($(enable_static), 1)
+install_lib: install_lib_static
+endif
+install_lib: install_lib_pc
+
+install_doc_html: build_doc_html
+	$(INSTALL) -d $(DATADIR)/doc/jemalloc$(install_suffix)
+	@for d in $(DOCS_HTML); do \
+	$(INSTALL) -v -m 644 $$d $(DATADIR)/doc/jemalloc$(install_suffix); \
+done
+
+install_doc_man: build_doc_man
+	$(INSTALL) -d $(MANDIR)/man3
+	@for d in $(DOCS_MAN3); do \
+	$(INSTALL) -v -m 644 $$d $(MANDIR)/man3; \
+done
+
+install_doc: install_doc_html install_doc_man
+
+install: install_bin install_include install_lib
+
+ifeq ($(enable_doc), 1)
+install: install_doc
+endif
+
+uninstall_bin:
+	$(RM) -v $(foreach b,$(notdir $(BINS)),$(BINDIR)/$(b))
+
+uninstall_include:
+	$(RM) -v $(foreach h,$(notdir $(C_HDRS)),$(INCLUDEDIR)/jemalloc/$(h))
+	rmdir -v $(INCLUDEDIR)/jemalloc
+
+uninstall_lib_shared:
+	$(RM) -v $(LIBDIR)/$(LIBJEMALLOC).$(SOREV)
+ifneq ($(SOREV),$(SO))
+	$(RM) -v $(LIBDIR)/$(LIBJEMALLOC).$(SO)
+endif
+
+uninstall_lib_static:
+	$(RM) -v $(foreach l,$(notdir $(STATIC_LIBS)),$(LIBDIR)/$(l))
+
+uninstall_lib_pc:
+	$(RM) -v $(foreach p,$(notdir $(PC)),$(LIBDIR)/pkgconfig/$(p))
+
+ifeq ($(enable_shared), 1)
+uninstall_lib: uninstall_lib_shared
+endif
+ifeq ($(enable_static), 1)
+uninstall_lib: uninstall_lib_static
+endif
+uninstall_lib: uninstall_lib_pc
+
+uninstall_doc_html:
+	$(RM) -v $(foreach d,$(notdir $(DOCS_HTML)),$(DATADIR)/doc/jemalloc$(install_suffix)/$(d))
+	rmdir -v $(DATADIR)/doc/jemalloc$(install_suffix)
+
+uninstall_doc_man:
+	$(RM) -v $(foreach d,$(notdir $(DOCS_MAN3)),$(MANDIR)/man3/$(d))
+
+uninstall_doc: uninstall_doc_html uninstall_doc_man
+
+uninstall: uninstall_bin uninstall_include uninstall_lib
+
+ifeq ($(enable_doc), 1)
+uninstall: uninstall_doc
+endif
+
+tests_unit: $(TESTS_UNIT:$(srcroot)%.c=$(objroot)%$(EXE))
+tests_integration: $(TESTS_INTEGRATION:$(srcroot)%.c=$(objroot)%$(EXE)) $(TESTS_INTEGRATION_CPP:$(srcroot)%.cpp=$(objroot)%$(EXE))
+tests_analyze: $(TESTS_ANALYZE:$(srcroot)%.c=$(objroot)%$(EXE))
+tests_stress: $(TESTS_STRESS:$(srcroot)%.c=$(objroot)%$(EXE))
+tests: tests_unit tests_integration tests_analyze tests_stress
+
+check_unit_dir:
+	@mkdir -p $(objroot)test/unit
+check_integration_dir:
+	@mkdir -p $(objroot)test/integration
+analyze_dir:
+	@mkdir -p $(objroot)test/analyze
+stress_dir:
+	@mkdir -p $(objroot)test/stress
+check_dir: check_unit_dir check_integration_dir
+
+check_unit: tests_unit check_unit_dir
+	$(SHELL) $(objroot)test/test.sh $(TESTS_UNIT:$(srcroot)%.c=$(objroot)%)
+check_integration_prof: tests_integration check_integration_dir
+ifeq ($(enable_prof), 1)
+	$(MALLOC_CONF)="prof:true" $(SHELL) $(objroot)test/test.sh $(TESTS_INTEGRATION:$(srcroot)%.c=$(objroot)%) $(TESTS_INTEGRATION_CPP:$(srcroot)%.cpp=$(objroot)%)
+	$(MALLOC_CONF)="prof:true,prof_active:false" $(SHELL) $(objroot)test/test.sh $(TESTS_INTEGRATION:$(srcroot)%.c=$(objroot)%) $(TESTS_INTEGRATION_CPP:$(srcroot)%.cpp=$(objroot)%)
+endif
+check_integration_decay: tests_integration check_integration_dir
+	$(MALLOC_CONF)="dirty_decay_ms:-1,muzzy_decay_ms:-1" $(SHELL) $(objroot)test/test.sh $(TESTS_INTEGRATION:$(srcroot)%.c=$(objroot)%) $(TESTS_INTEGRATION_CPP:$(srcroot)%.cpp=$(objroot)%)
+	$(MALLOC_CONF)="dirty_decay_ms:0,muzzy_decay_ms:0" $(SHELL) $(objroot)test/test.sh $(TESTS_INTEGRATION:$(srcroot)%.c=$(objroot)%) $(TESTS_INTEGRATION_CPP:$(srcroot)%.cpp=$(objroot)%)
+check_integration: tests_integration check_integration_dir
+	$(SHELL) $(objroot)test/test.sh $(TESTS_INTEGRATION:$(srcroot)%.c=$(objroot)%) $(TESTS_INTEGRATION_CPP:$(srcroot)%.cpp=$(objroot)%)
+analyze: tests_analyze analyze_dir
+ifeq ($(enable_prof), 1)
+	$(MALLOC_CONF)="prof:true" $(SHELL) $(objroot)test/test.sh $(TESTS_ANALYZE:$(srcroot)%.c=$(objroot)%)
+else
+	$(SHELL) $(objroot)test/test.sh $(TESTS_ANALYZE:$(srcroot)%.c=$(objroot)%)
+endif
+stress: tests_stress stress_dir
+	$(SHELL) $(objroot)test/test.sh $(TESTS_STRESS:$(srcroot)%.c=$(objroot)%)
+check: check_unit check_integration check_integration_decay check_integration_prof
+
+clean:
+	rm -f $(PRIVATE_NAMESPACE_HDRS)
+	rm -f $(PRIVATE_NAMESPACE_GEN_HDRS)
+	rm -f $(C_SYM_OBJS)
+	rm -f $(C_SYMS)
+	rm -f $(C_OBJS)
+	rm -f $(CPP_OBJS)
+	rm -f $(C_PIC_OBJS)
+	rm -f $(CPP_PIC_OBJS)
+	rm -f $(C_JET_SYM_OBJS)
+	rm -f $(C_JET_SYMS)
+	rm -f $(C_JET_OBJS)
+	rm -f $(C_TESTLIB_OBJS)
+	rm -f $(C_SYM_OBJS:%.$(O)=%.d)
+	rm -f $(C_OBJS:%.$(O)=%.d)
+	rm -f $(CPP_OBJS:%.$(O)=%.d)
+	rm -f $(C_PIC_OBJS:%.$(O)=%.d)
+	rm -f $(CPP_PIC_OBJS:%.$(O)=%.d)
+	rm -f $(C_JET_SYM_OBJS:%.$(O)=%.d)
+	rm -f $(C_JET_OBJS:%.$(O)=%.d)
+	rm -f $(C_TESTLIB_OBJS:%.$(O)=%.d)
+	rm -f $(TESTS_OBJS:%.$(O)=%$(EXE))
+	rm -f $(TESTS_OBJS)
+	rm -f $(TESTS_OBJS:%.$(O)=%.d)
+	rm -f $(TESTS_OBJS:%.$(O)=%.out)
+	rm -f $(TESTS_CPP_OBJS:%.$(O)=%$(EXE))
+	rm -f $(TESTS_CPP_OBJS)
+	rm -f $(TESTS_CPP_OBJS:%.$(O)=%.d)
+	rm -f $(TESTS_CPP_OBJS:%.$(O)=%.out)
+	rm -f $(DSOS) $(STATIC_LIBS)
+
+distclean: clean
+	rm -f $(objroot)bin/jemalloc-config
+	rm -f $(objroot)bin/jemalloc.sh
+	rm -f $(objroot)bin/jeprof
+	rm -f $(objroot)config.log
+	rm -f $(objroot)config.status
+	rm -f $(objroot)config.stamp
+	rm -f $(cfghdrs_out)
+	rm -f $(cfgoutputs_out)
+
+relclean: distclean
+	rm -f $(objroot)configure
+	rm -f $(objroot)VERSION
+	rm -f $(DOCS_HTML)
+	rm -f $(DOCS_MAN3)
+
+#===============================================================================
+# Re-configuration rules.
+
+ifeq ($(enable_autogen), 1)
+$(srcroot)configure : $(srcroot)configure.ac
+	cd ./$(srcroot) && $(AUTOCONF)
+
+$(objroot)config.status : $(srcroot)configure
+	./$(objroot)config.status --recheck
+
+$(srcroot)config.stamp.in : $(srcroot)configure.ac
+	echo stamp > $(srcroot)config.stamp.in
+
+$(objroot)config.stamp : $(cfgoutputs_in) $(cfghdrs_in) $(srcroot)configure
+	./$(objroot)config.status
+	@touch $@
+
+# There must be some action in order for make to re-read Makefile when it is
+# out of date.
+$(cfgoutputs_out) $(cfghdrs_out) : $(objroot)config.stamp
+	@true
+endif
diff --git a/deps/jemalloc/README b/deps/jemalloc/README
new file mode 100644
index 0000000..3a6e0d2
--- /dev/null
+++ b/deps/jemalloc/README
@@ -0,0 +1,20 @@
+jemalloc is a general purpose malloc(3) implementation that emphasizes
+fragmentation avoidance and scalable concurrency support.  jemalloc first came
+into use as the FreeBSD libc allocator in 2005, and since then it has found its
+way into numerous applications that rely on its predictable behavior.  In 2010
+jemalloc development efforts broadened to include developer support features
+such as heap profiling and extensive monitoring/tuning hooks.  Modern jemalloc
+releases continue to be integrated back into FreeBSD, and therefore versatility
+remains critical.  Ongoing development efforts trend toward making jemalloc
+among the best allocators for a broad range of demanding applications, and
+eliminating/mitigating weaknesses that have practical repercussions for real
+world applications.
+
+The COPYING file contains copyright and licensing information.
+
+The INSTALL file contains information on how to configure, build, and install
+jemalloc.
+
+The ChangeLog file contains a brief summary of changes for each release.
+
+URL: http://jemalloc.net/
diff --git a/deps/jemalloc/TUNING.md b/deps/jemalloc/TUNING.md
new file mode 100644
index 0000000..e96399d
--- /dev/null
+++ b/deps/jemalloc/TUNING.md
@@ -0,0 +1,129 @@
+This document summarizes the common approaches for performance fine tuning with
+jemalloc (as of 5.3.0).  The default configuration of jemalloc tends to work
+reasonably well in practice, and most applications should not have to tune any
+options. However, in order to cover a wide range of applications and avoid
+pathological cases, the default setting is sometimes kept conservative and
+suboptimal, even for many common workloads.  When jemalloc is properly tuned for
+a specific application / workload, it is common to improve system level metrics
+by a few percent, or make favorable trade-offs.
+
+
+## Notable runtime options for performance tuning
+
+Runtime options can be set via
+[malloc_conf](http://jemalloc.net/jemalloc.3.html#tuning).
+
+* [background_thread](http://jemalloc.net/jemalloc.3.html#background_thread)
+
+    Enabling jemalloc background threads generally improves the tail latency for
+    application threads, since unused memory purging is shifted to the dedicated
+    background threads.  In addition, unintended purging delay caused by
+    application inactivity is avoided with background threads.
+
+    Suggested: `background_thread:true` when jemalloc managed threads can be
+    allowed.
+
+* [metadata_thp](http://jemalloc.net/jemalloc.3.html#opt.metadata_thp)
+
+    Allowing jemalloc to utilize transparent huge pages for its internal
+    metadata usually reduces TLB misses significantly, especially for programs
+    with large memory footprint and frequent allocation / deallocation
+    activities.  Metadata memory usage may increase due to the use of huge
+    pages.
+
+    Suggested for allocation intensive programs: `metadata_thp:auto` or
+    `metadata_thp:always`, which is expected to improve CPU utilization at a
+    small memory cost.
+
+* [dirty_decay_ms](http://jemalloc.net/jemalloc.3.html#opt.dirty_decay_ms) and
+  [muzzy_decay_ms](http://jemalloc.net/jemalloc.3.html#opt.muzzy_decay_ms)
+
+    Decay time determines how fast jemalloc returns unused pages back to the
+    operating system, and therefore provides a fairly straightforward trade-off
+    between CPU and memory usage.  Shorter decay time purges unused pages faster
+    to reduces memory usage (usually at the cost of more CPU cycles spent on
+    purging), and vice versa.
+
+    Suggested: tune the values based on the desired trade-offs.
+
+* [narenas](http://jemalloc.net/jemalloc.3.html#opt.narenas)
+
+    By default jemalloc uses multiple arenas to reduce internal lock contention.
+    However high arena count may also increase overall memory fragmentation,
+    since arenas manage memory independently.  When high degree of parallelism
+    is not expected at the allocator level, lower number of arenas often
+    improves memory usage.
+
+    Suggested: if low parallelism is expected, try lower arena count while
+    monitoring CPU and memory usage.
+
+* [percpu_arena](http://jemalloc.net/jemalloc.3.html#opt.percpu_arena)
+
+    Enable dynamic thread to arena association based on running CPU.  This has
+    the potential to improve locality, e.g. when thread to CPU affinity is
+    present.
+    
+    Suggested: try `percpu_arena:percpu` or `percpu_arena:phycpu` if
+    thread migration between processors is expected to be infrequent.
+
+Examples:
+
+* High resource consumption application, prioritizing CPU utilization:
+
+    `background_thread:true,metadata_thp:auto` combined with relaxed decay time
+    (increased `dirty_decay_ms` and / or `muzzy_decay_ms`,
+    e.g. `dirty_decay_ms:30000,muzzy_decay_ms:30000`).
+
+* High resource consumption application, prioritizing memory usage:
+
+    `background_thread:true,tcache_max:4096` combined with shorter decay time
+    (decreased `dirty_decay_ms` and / or `muzzy_decay_ms`,
+    e.g. `dirty_decay_ms:5000,muzzy_decay_ms:5000`), and lower arena count
+    (e.g. number of CPUs).
+
+* Low resource consumption application:
+
+    `narenas:1,tcache_max:1024` combined with shorter decay time (decreased
+    `dirty_decay_ms` and / or `muzzy_decay_ms`,e.g.
+    `dirty_decay_ms:1000,muzzy_decay_ms:0`).
+
+* Extremely conservative -- minimize memory usage at all costs, only suitable when
+allocation activity is very rare:
+
+    `narenas:1,tcache:false,dirty_decay_ms:0,muzzy_decay_ms:0`
+
+Note that it is recommended to combine the options with `abort_conf:true` which
+aborts immediately on illegal options.
+
+## Beyond runtime options
+
+In addition to the runtime options, there are a number of programmatic ways to
+improve application performance with jemalloc.
+
+* [Explicit arenas](http://jemalloc.net/jemalloc.3.html#arenas.create)
+
+    Manually created arenas can help performance in various ways, e.g. by
+    managing locality and contention for specific usages.  For example,
+    applications can explicitly allocate frequently accessed objects from a
+    dedicated arena with
+    [mallocx()](http://jemalloc.net/jemalloc.3.html#MALLOCX_ARENA) to improve
+    locality.  In addition, explicit arenas often benefit from individually
+    tuned options, e.g. relaxed [decay
+    time](http://jemalloc.net/jemalloc.3.html#arena.i.dirty_decay_ms) if
+    frequent reuse is expected.
+
+* [Extent hooks](http://jemalloc.net/jemalloc.3.html#arena.i.extent_hooks)
+
+    Extent hooks allow customization for managing underlying memory.  One use
+    case for performance purpose is to utilize huge pages -- for example,
+    [HHVM](https://github.com/facebook/hhvm/blob/master/hphp/util/alloc.cpp)
+    uses explicit arenas with customized extent hooks to manage 1GB huge pages
+    for frequently accessed data, which reduces TLB misses significantly.
+
+* [Explicit thread-to-arena
+  binding](http://jemalloc.net/jemalloc.3.html#thread.arena)
+
+    It is common for some threads in an application to have different memory
+    access / allocation patterns.  Threads with heavy workloads often benefit
+    from explicit binding, e.g. binding very active threads to dedicated arenas
+    may reduce contention at the allocator level.
diff --git a/deps/jemalloc/VERSION b/deps/jemalloc/VERSION
new file mode 100644
index 0000000..3028a80
--- /dev/null
+++ b/deps/jemalloc/VERSION
@@ -0,0 +1 @@
+5.3.0-0-g0
diff --git a/deps/jemalloc/autogen.sh b/deps/jemalloc/autogen.sh
new file mode 100755
index 0000000..75f32da
--- /dev/null
+++ b/deps/jemalloc/autogen.sh
@@ -0,0 +1,17 @@
+#!/bin/sh
+
+for i in autoconf; do
+    echo "$i"
+    $i
+    if [ $? -ne 0 ]; then
+	echo "Error $? in $i"
+	exit 1
+    fi
+done
+
+echo "./configure --enable-autogen $@"
+./configure --enable-autogen $@
+if [ $? -ne 0 ]; then
+    echo "Error $? in ./configure"
+    exit 1
+fi
diff --git a/deps/jemalloc/bin/jemalloc-config.in b/deps/jemalloc/bin/jemalloc-config.in
new file mode 100644
index 0000000..80eca2e
--- /dev/null
+++ b/deps/jemalloc/bin/jemalloc-config.in
@@ -0,0 +1,83 @@
+#!/bin/sh
+
+usage() {
+	cat <<EOF
+Usage:
+  @BINDIR@/jemalloc-config <option>
+Options:
+  --help | -h  : Print usage.
+  --version    : Print jemalloc version.
+  --revision   : Print shared library revision number.
+  --config     : Print configure options used to build jemalloc.
+  --prefix     : Print installation directory prefix.
+  --bindir     : Print binary installation directory.
+  --datadir    : Print data installation directory.
+  --includedir : Print include installation directory.
+  --libdir     : Print library installation directory.
+  --mandir     : Print manual page installation directory.
+  --cc         : Print compiler used to build jemalloc.
+  --cflags     : Print compiler flags used to build jemalloc.
+  --cppflags   : Print preprocessor flags used to build jemalloc.
+  --cxxflags   : Print C++ compiler flags used to build jemalloc.
+  --ldflags    : Print library flags used to build jemalloc.
+  --libs       : Print libraries jemalloc was linked against.
+EOF
+}
+
+prefix="@prefix@"
+exec_prefix="@exec_prefix@"
+
+case "$1" in
+--help | -h)
+	usage
+	exit 0
+	;;
+--version)
+	echo "@jemalloc_version@"
+	;;
+--revision)
+	echo "@rev@"
+	;;
+--config)
+	echo "@CONFIG@"
+	;;
+--prefix)
+	echo "@PREFIX@"
+	;;
+--bindir)
+	echo "@BINDIR@"
+	;;
+--datadir)
+	echo "@DATADIR@"
+	;;
+--includedir)
+	echo "@INCLUDEDIR@"
+	;;
+--libdir)
+	echo "@LIBDIR@"
+	;;
+--mandir)
+	echo "@MANDIR@"
+	;;
+--cc)
+	echo "@CC@"
+	;;
+--cflags)
+	echo "@CFLAGS@"
+	;;
+--cppflags)
+	echo "@CPPFLAGS@"
+	;;
+--cxxflags)
+	echo "@CXXFLAGS@"
+	;;
+--ldflags)
+	echo "@LDFLAGS@ @EXTRA_LDFLAGS@"
+	;;
+--libs)
+	echo "@LIBS@"
+	;;
+*)
+	usage
+	exit 1
+esac
diff --git a/deps/jemalloc/bin/jemalloc.sh.in b/deps/jemalloc/bin/jemalloc.sh.in
new file mode 100644
index 0000000..cdf3673
--- /dev/null
+++ b/deps/jemalloc/bin/jemalloc.sh.in
@@ -0,0 +1,9 @@
+#!/bin/sh
+
+prefix=@prefix@
+exec_prefix=@exec_prefix@
+libdir=@libdir@
+
+@LD_PRELOAD_VAR@=${libdir}/libjemalloc.@SOREV@
+export @LD_PRELOAD_VAR@
+exec "$@"
diff --git a/deps/jemalloc/bin/jeprof.in b/deps/jemalloc/bin/jeprof.in
new file mode 100644
index 0000000..dbf6252
--- /dev/null
+++ b/deps/jemalloc/bin/jeprof.in
@@ -0,0 +1,5723 @@
+#! /usr/bin/env perl
+
+# Copyright (c) 1998-2007, Google Inc.
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+#     * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above
+# copyright notice, this list of conditions and the following disclaimer
+# in the documentation and/or other materials provided with the
+# distribution.
+#     * Neither the name of Google Inc. nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+# ---
+# Program for printing the profile generated by common/profiler.cc,
+# or by the heap profiler (common/debugallocation.cc)
+#
+# The profile contains a sequence of entries of the form:
+#       <count> <stack trace>
+# This program parses the profile, and generates user-readable
+# output.
+#
+# Examples:
+#
+# % tools/jeprof "program" "profile"
+#   Enters "interactive" mode
+#
+# % tools/jeprof --text "program" "profile"
+#   Generates one line per procedure
+#
+# % tools/jeprof --gv "program" "profile"
+#   Generates annotated call-graph and displays via "gv"
+#
+# % tools/jeprof --gv --focus=Mutex "program" "profile"
+#   Restrict to code paths that involve an entry that matches "Mutex"
+#
+# % tools/jeprof --gv --focus=Mutex --ignore=string "program" "profile"
+#   Restrict to code paths that involve an entry that matches "Mutex"
+#   and does not match "string"
+#
+# % tools/jeprof --list=IBF_CheckDocid "program" "profile"
+#   Generates disassembly listing of all routines with at least one
+#   sample that match the --list=<regexp> pattern.  The listing is
+#   annotated with the flat and cumulative sample counts at each line.
+#
+# % tools/jeprof --disasm=IBF_CheckDocid "program" "profile"
+#   Generates disassembly listing of all routines with at least one
+#   sample that match the --disasm=<regexp> pattern.  The listing is
+#   annotated with the flat and cumulative sample counts at each PC value.
+#
+# TODO: Use color to indicate files?
+
+use strict;
+use warnings;
+use Getopt::Long;
+use Cwd;
+
+my $JEPROF_VERSION = "@jemalloc_version@";
+my $PPROF_VERSION = "2.0";
+
+# These are the object tools we use which can come from a
+# user-specified location using --tools, from the JEPROF_TOOLS
+# environment variable, or from the environment.
+my %obj_tool_map = (
+  "objdump" => "objdump",
+  "nm" => "nm",
+  "addr2line" => "addr2line",
+  "c++filt" => "c++filt",
+  ## ConfigureObjTools may add architecture-specific entries:
+  #"nm_pdb" => "nm-pdb",       # for reading windows (PDB-format) executables
+  #"addr2line_pdb" => "addr2line-pdb",                                # ditto
+  #"otool" => "otool",         # equivalent of objdump on OS X
+);
+# NOTE: these are lists, so you can put in commandline flags if you want.
+my @DOT = ("dot");          # leave non-absolute, since it may be in /usr/local
+my @GV = ("gv");
+my @EVINCE = ("evince");    # could also be xpdf or perhaps acroread
+my @KCACHEGRIND = ("kcachegrind");
+my @PS2PDF = ("ps2pdf");
+# These are used for dynamic profiles
+my @URL_FETCHER = ("curl", "-s", "--fail");
+
+# These are the web pages that servers need to support for dynamic profiles
+my $HEAP_PAGE = "/pprof/heap";
+my $PROFILE_PAGE = "/pprof/profile";   # must support cgi-param "?seconds=#"
+my $PMUPROFILE_PAGE = "/pprof/pmuprofile(?:\\?.*)?"; # must support cgi-param
+                                                # ?seconds=#&event=x&period=n
+my $GROWTH_PAGE = "/pprof/growth";
+my $CONTENTION_PAGE = "/pprof/contention";
+my $WALL_PAGE = "/pprof/wall(?:\\?.*)?";  # accepts options like namefilter
+my $FILTEREDPROFILE_PAGE = "/pprof/filteredprofile(?:\\?.*)?";
+my $CENSUSPROFILE_PAGE = "/pprof/censusprofile(?:\\?.*)?"; # must support cgi-param
+                                                       # "?seconds=#",
+                                                       # "?tags_regexp=#" and
+                                                       # "?type=#".
+my $SYMBOL_PAGE = "/pprof/symbol";     # must support symbol lookup via POST
+my $PROGRAM_NAME_PAGE = "/pprof/cmdline";
+
+# These are the web pages that can be named on the command line.
+# All the alternatives must begin with /.
+my $PROFILES = "($HEAP_PAGE|$PROFILE_PAGE|$PMUPROFILE_PAGE|" .
+               "$GROWTH_PAGE|$CONTENTION_PAGE|$WALL_PAGE|" .
+               "$FILTEREDPROFILE_PAGE|$CENSUSPROFILE_PAGE)";
+
+# default binary name
+my $UNKNOWN_BINARY = "(unknown)";
+
+# There is a pervasive dependency on the length (in hex characters,
+# i.e., nibbles) of an address, distinguishing between 32-bit and
+# 64-bit profiles.  To err on the safe size, default to 64-bit here:
+my $address_length = 16;
+
+my $dev_null = "/dev/null";
+if (! -e $dev_null && $^O =~ /MSWin/) {    # $^O is the OS perl was built for
+  $dev_null = "nul";
+}
+
+# A list of paths to search for shared object files
+my @prefix_list = ();
+
+# Special routine name that should not have any symbols.
+# Used as separator to parse "addr2line -i" output.
+my $sep_symbol = '_fini';
+my $sep_address = undef;
+
+##### Argument parsing #####
+
+sub usage_string {
+  return <<EOF;
+Usage:
+jeprof [options] <program> <profiles>
+   <profiles> is a space separated list of profile names.
+jeprof [options] <symbolized-profiles>
+   <symbolized-profiles> is a list of profile files where each file contains
+   the necessary symbol mappings  as well as profile data (likely generated
+   with --raw).
+jeprof [options] <profile>
+   <profile> is a remote form.  Symbols are obtained from host:port$SYMBOL_PAGE
+
+   Each name can be:
+   /path/to/profile        - a path to a profile file
+   host:port[/<service>]   - a location of a service to get profile from
+
+   The /<service> can be $HEAP_PAGE, $PROFILE_PAGE, /pprof/pmuprofile,
+                         $GROWTH_PAGE, $CONTENTION_PAGE, /pprof/wall,
+                         $CENSUSPROFILE_PAGE, or /pprof/filteredprofile.
+   For instance:
+     jeprof http://myserver.com:80$HEAP_PAGE
+   If /<service> is omitted, the service defaults to $PROFILE_PAGE (cpu profiling).
+jeprof --symbols <program>
+   Maps addresses to symbol names.  In this mode, stdin should be a
+   list of library mappings, in the same format as is found in the heap-
+   and cpu-profile files (this loosely matches that of /proc/self/maps
+   on linux), followed by a list of hex addresses to map, one per line.
+
+   For more help with querying remote servers, including how to add the
+   necessary server-side support code, see this filename (or one like it):
+
+   /usr/doc/gperftools-$PPROF_VERSION/pprof_remote_servers.html
+
+Options:
+   --cum               Sort by cumulative data
+   --base=<base>       Subtract <base> from <profile> before display
+   --interactive       Run in interactive mode (interactive "help" gives help) [default]
+   --seconds=<n>       Length of time for dynamic profiles [default=30 secs]
+   --add_lib=<file>    Read additional symbols and line info from the given library
+   --lib_prefix=<dir>  Comma separated list of library path prefixes
+
+Reporting Granularity:
+   --addresses         Report at address level
+   --lines             Report at source line level
+   --functions         Report at function level [default]
+   --files             Report at source file level
+
+Output type:
+   --text              Generate text report
+   --callgrind         Generate callgrind format to stdout
+   --gv                Generate Postscript and display
+   --evince            Generate PDF and display
+   --web               Generate SVG and display
+   --list=<regexp>     Generate source listing of matching routines
+   --disasm=<regexp>   Generate disassembly of matching routines
+   --symbols           Print demangled symbol names found at given addresses
+   --dot               Generate DOT file to stdout
+   --ps                Generate Postcript to stdout
+   --pdf               Generate PDF to stdout
+   --svg               Generate SVG to stdout
+   --gif               Generate GIF to stdout
+   --raw               Generate symbolized jeprof data (useful with remote fetch)
+   --collapsed         Generate collapsed stacks for building flame graphs
+                       (see http://www.brendangregg.com/flamegraphs.html)
+
+Heap-Profile Options:
+   --inuse_space       Display in-use (mega)bytes [default]
+   --inuse_objects     Display in-use objects
+   --alloc_space       Display allocated (mega)bytes
+   --alloc_objects     Display allocated objects
+   --show_bytes        Display space in bytes
+   --drop_negative     Ignore negative differences
+
+Contention-profile options:
+   --total_delay       Display total delay at each region [default]
+   --contentions       Display number of delays at each region
+   --mean_delay        Display mean delay at each region
+
+Call-graph Options:
+   --nodecount=<n>     Show at most so many nodes [default=80]
+   --nodefraction=<f>  Hide nodes below <f>*total [default=.005]
+   --edgefraction=<f>  Hide edges below <f>*total [default=.001]
+   --maxdegree=<n>     Max incoming/outgoing edges per node [default=8]
+   --focus=<regexp>    Focus on backtraces with nodes matching <regexp>
+   --thread=<n>        Show profile for thread <n>
+   --ignore=<regexp>   Ignore backtraces with nodes matching <regexp>
+   --scale=<n>         Set GV scaling [default=0]
+   --heapcheck         Make nodes with non-0 object counts
+                       (i.e. direct leak generators) more visible
+   --retain=<regexp>   Retain only nodes that match <regexp>
+   --exclude=<regexp>  Exclude all nodes that match <regexp>
+
+Miscellaneous:
+   --tools=<prefix or binary:fullpath>[,...]   \$PATH for object tool pathnames
+   --test              Run unit tests
+   --help              This message
+   --version           Version information
+   --debug-syms-by-id  (Linux only) Find debug symbol files by build ID as well as by name
+
+Environment Variables:
+   JEPROF_TMPDIR        Profiles directory. Defaults to \$HOME/jeprof
+   JEPROF_TOOLS         Prefix for object tools pathnames
+
+Examples:
+
+jeprof /bin/ls ls.prof
+                       Enters "interactive" mode
+jeprof --text /bin/ls ls.prof
+                       Outputs one line per procedure
+jeprof --web /bin/ls ls.prof
+                       Displays annotated call-graph in web browser
+jeprof --gv /bin/ls ls.prof
+                       Displays annotated call-graph via 'gv'
+jeprof --gv --focus=Mutex /bin/ls ls.prof
+                       Restricts to code paths including a .*Mutex.* entry
+jeprof --gv --focus=Mutex --ignore=string /bin/ls ls.prof
+                       Code paths including Mutex but not string
+jeprof --list=getdir /bin/ls ls.prof
+                       (Per-line) annotated source listing for getdir()
+jeprof --disasm=getdir /bin/ls ls.prof
+                       (Per-PC) annotated disassembly for getdir()
+
+jeprof http://localhost:1234/
+                       Enters "interactive" mode
+jeprof --text localhost:1234
+                       Outputs one line per procedure for localhost:1234
+jeprof --raw localhost:1234 > ./local.raw
+jeprof --text ./local.raw
+                       Fetches a remote profile for later analysis and then
+                       analyzes it in text mode.
+EOF
+}
+
+sub version_string {
+  return <<EOF
+jeprof (part of jemalloc $JEPROF_VERSION)
+based on pprof (part of gperftools $PPROF_VERSION)
+
+Copyright 1998-2007 Google Inc.
+
+This is BSD licensed software; see the source for copying conditions
+and license information.
+There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A
+PARTICULAR PURPOSE.
+EOF
+}
+
+sub usage {
+  my $msg = shift;
+  print STDERR "$msg\n\n";
+  print STDERR usage_string();
+  print STDERR "\nFATAL ERROR: $msg\n";    # just as a reminder
+  exit(1);
+}
+
+sub Init() {
+  # Setup tmp-file name and handler to clean it up.
+  # We do this in the very beginning so that we can use
+  # error() and cleanup() function anytime here after.
+  $main::tmpfile_sym = "/tmp/jeprof$$.sym";
+  $main::tmpfile_ps = "/tmp/jeprof$$";
+  $main::next_tmpfile = 0;
+  $SIG{'INT'} = \&sighandler;
+
+  # Cache from filename/linenumber to source code
+  $main::source_cache = ();
+
+  $main::opt_help = 0;
+  $main::opt_version = 0;
+
+  $main::opt_cum = 0;
+  $main::opt_base = '';
+  $main::opt_addresses = 0;
+  $main::opt_lines = 0;
+  $main::opt_functions = 0;
+  $main::opt_files = 0;
+  $main::opt_lib_prefix = "";
+
+  $main::opt_text = 0;
+  $main::opt_callgrind = 0;
+  $main::opt_list = "";
+  $main::opt_disasm = "";
+  $main::opt_symbols = 0;
+  $main::opt_gv = 0;
+  $main::opt_evince = 0;
+  $main::opt_web = 0;
+  $main::opt_dot = 0;
+  $main::opt_ps = 0;
+  $main::opt_pdf = 0;
+  $main::opt_gif = 0;
+  $main::opt_svg = 0;
+  $main::opt_raw = 0;
+  $main::opt_collapsed = 0;
+
+  $main::opt_nodecount = 80;
+  $main::opt_nodefraction = 0.005;
+  $main::opt_edgefraction = 0.001;
+  $main::opt_maxdegree = 8;
+  $main::opt_focus = '';
+  $main::opt_thread = undef;
+  $main::opt_ignore = '';
+  $main::opt_scale = 0;
+  $main::opt_heapcheck = 0;
+  $main::opt_retain = '';
+  $main::opt_exclude = '';
+  $main::opt_seconds = 30;
+  $main::opt_lib = "";
+
+  $main::opt_inuse_space   = 0;
+  $main::opt_inuse_objects = 0;
+  $main::opt_alloc_space   = 0;
+  $main::opt_alloc_objects = 0;
+  $main::opt_show_bytes    = 0;
+  $main::opt_drop_negative = 0;
+  $main::opt_interactive   = 0;
+
+  $main::opt_total_delay = 0;
+  $main::opt_contentions = 0;
+  $main::opt_mean_delay = 0;
+
+  $main::opt_tools   = "";
+  $main::opt_debug   = 0;
+  $main::opt_test    = 0;
+  $main::opt_debug_syms_by_id = 0;
+
+  # These are undocumented flags used only by unittests.
+  $main::opt_test_stride = 0;
+
+  # Are we using $SYMBOL_PAGE?
+  $main::use_symbol_page = 0;
+
+  # Files returned by TempName.
+  %main::tempnames = ();
+
+  # Type of profile we are dealing with
+  # Supported types:
+  #     cpu
+  #     heap
+  #     growth
+  #     contention
+  $main::profile_type = '';     # Empty type means "unknown"
+
+  GetOptions("help!"          => \$main::opt_help,
+             "version!"       => \$main::opt_version,
+             "cum!"           => \$main::opt_cum,
+             "base=s"         => \$main::opt_base,
+             "seconds=i"      => \$main::opt_seconds,
+             "add_lib=s"      => \$main::opt_lib,
+             "lib_prefix=s"   => \$main::opt_lib_prefix,
+             "functions!"     => \$main::opt_functions,
+             "lines!"         => \$main::opt_lines,
+             "addresses!"     => \$main::opt_addresses,
+             "files!"         => \$main::opt_files,
+             "text!"          => \$main::opt_text,
+             "callgrind!"     => \$main::opt_callgrind,
+             "list=s"         => \$main::opt_list,
+             "disasm=s"       => \$main::opt_disasm,
+             "symbols!"       => \$main::opt_symbols,
+             "gv!"            => \$main::opt_gv,
+             "evince!"        => \$main::opt_evince,
+             "web!"           => \$main::opt_web,
+             "dot!"           => \$main::opt_dot,
+             "ps!"            => \$main::opt_ps,
+             "pdf!"           => \$main::opt_pdf,
+             "svg!"           => \$main::opt_svg,
+             "gif!"           => \$main::opt_gif,
+             "raw!"           => \$main::opt_raw,
+             "collapsed!"     => \$main::opt_collapsed,
+             "interactive!"   => \$main::opt_interactive,
+             "nodecount=i"    => \$main::opt_nodecount,
+             "nodefraction=f" => \$main::opt_nodefraction,
+             "edgefraction=f" => \$main::opt_edgefraction,
+             "maxdegree=i"    => \$main::opt_maxdegree,
+             "focus=s"        => \$main::opt_focus,
+             "thread=s"       => \$main::opt_thread,
+             "ignore=s"       => \$main::opt_ignore,
+             "scale=i"        => \$main::opt_scale,
+             "heapcheck"      => \$main::opt_heapcheck,
+             "retain=s"       => \$main::opt_retain,
+             "exclude=s"      => \$main::opt_exclude,
+             "inuse_space!"   => \$main::opt_inuse_space,
+             "inuse_objects!" => \$main::opt_inuse_objects,
+             "alloc_space!"   => \$main::opt_alloc_space,
+             "alloc_objects!" => \$main::opt_alloc_objects,
+             "show_bytes!"    => \$main::opt_show_bytes,
+             "drop_negative!" => \$main::opt_drop_negative,
+             "total_delay!"   => \$main::opt_total_delay,
+             "contentions!"   => \$main::opt_contentions,
+             "mean_delay!"    => \$main::opt_mean_delay,
+             "tools=s"        => \$main::opt_tools,
+             "test!"          => \$main::opt_test,
+             "debug!"         => \$main::opt_debug,
+             "debug-syms-by-id!" => \$main::opt_debug_syms_by_id,
+             # Undocumented flags used only by unittests:
+             "test_stride=i"  => \$main::opt_test_stride,
+      ) || usage("Invalid option(s)");
+
+  # Deal with the standard --help and --version
+  if ($main::opt_help) {
+    print usage_string();
+    exit(0);
+  }
+
+  if ($main::opt_version) {
+    print version_string();
+    exit(0);
+  }
+
+  # Disassembly/listing/symbols mode requires address-level info
+  if ($main::opt_disasm || $main::opt_list || $main::opt_symbols) {
+    $main::opt_functions = 0;
+    $main::opt_lines = 0;
+    $main::opt_addresses = 1;
+    $main::opt_files = 0;
+  }
+
+  # Check heap-profiling flags
+  if ($main::opt_inuse_space +
+      $main::opt_inuse_objects +
+      $main::opt_alloc_space +
+      $main::opt_alloc_objects > 1) {
+    usage("Specify at most on of --inuse/--alloc options");
+  }
+
+  # Check output granularities
+  my $grains =
+      $main::opt_functions +
+      $main::opt_lines +
+      $main::opt_addresses +
+      $main::opt_files +
+      0;
+  if ($grains > 1) {
+    usage("Only specify one output granularity option");
+  }
+  if ($grains == 0) {
+    $main::opt_functions = 1;
+  }
+
+  # Check output modes
+  my $modes =
+      $main::opt_text +
+      $main::opt_callgrind +
+      ($main::opt_list eq '' ? 0 : 1) +
+      ($main::opt_disasm eq '' ? 0 : 1) +
+      ($main::opt_symbols == 0 ? 0 : 1) +
+      $main::opt_gv +
+      $main::opt_evince +
+      $main::opt_web +
+      $main::opt_dot +
+      $main::opt_ps +
+      $main::opt_pdf +
+      $main::opt_svg +
+      $main::opt_gif +
+      $main::opt_raw +
+      $main::opt_collapsed +
+      $main::opt_interactive +
+      0;
+  if ($modes > 1) {
+    usage("Only specify one output mode");
+  }
+  if ($modes == 0) {
+    if (-t STDOUT) {  # If STDOUT is a tty, activate interactive mode
+      $main::opt_interactive = 1;
+    } else {
+      $main::opt_text = 1;
+    }
+  }
+
+  if ($main::opt_test) {
+    RunUnitTests();
+    # Should not return
+    exit(1);
+  }
+
+  # Binary name and profile arguments list
+  $main::prog = "";
+  @main::pfile_args = ();
+
+  # Remote profiling without a binary (using $SYMBOL_PAGE instead)
+  if (@ARGV > 0) {
+    if (IsProfileURL($ARGV[0])) {
+      $main::use_symbol_page = 1;
+    } elsif (IsSymbolizedProfileFile($ARGV[0])) {
+      $main::use_symbolized_profile = 1;
+      $main::prog = $UNKNOWN_BINARY;  # will be set later from the profile file
+    }
+  }
+
+  if ($main::use_symbol_page || $main::use_symbolized_profile) {
+    # We don't need a binary!
+    my %disabled = ('--lines' => $main::opt_lines,
+                    '--disasm' => $main::opt_disasm);
+    for my $option (keys %disabled) {
+      usage("$option cannot be used without a binary") if $disabled{$option};
+    }
+    # Set $main::prog later...
+    scalar(@ARGV) || usage("Did not specify profile file");
+  } elsif ($main::opt_symbols) {
+    # --symbols needs a binary-name (to run nm on, etc) but not profiles
+    $main::prog = shift(@ARGV) || usage("Did not specify program");
+  } else {
+    $main::prog = shift(@ARGV) || usage("Did not specify program");
+    scalar(@ARGV) || usage("Did not specify profile file");
+  }
+
+  # Parse profile file/location arguments
+  foreach my $farg (@ARGV) {
+    if ($farg =~ m/(.*)\@([0-9]+)(|\/.*)$/ ) {
+      my $machine = $1;
+      my $num_machines = $2;
+      my $path = $3;
+      for (my $i = 0; $i < $num_machines; $i++) {
+        unshift(@main::pfile_args, "$i.$machine$path");
+      }
+    } else {
+      unshift(@main::pfile_args, $farg);
+    }
+  }
+
+  if ($main::use_symbol_page) {
+    unless (IsProfileURL($main::pfile_args[0])) {
+      error("The first profile should be a remote form to use $SYMBOL_PAGE\n");
+    }
+    CheckSymbolPage();
+    $main::prog = FetchProgramName();
+  } elsif (!$main::use_symbolized_profile) {  # may not need objtools!
+    ConfigureObjTools($main::prog)
+  }
+
+  # Break the opt_lib_prefix into the prefix_list array
+  @prefix_list = split (',', $main::opt_lib_prefix);
+
+  # Remove trailing / from the prefixes, in the list to prevent
+  # searching things like /my/path//lib/mylib.so
+  foreach (@prefix_list) {
+    s|/+$||;
+  }
+
+  # Flag to prevent us from trying over and over to use
+  #  elfutils if it's not installed (used only with
+  #  --debug-syms-by-id option).
+  $main::gave_up_on_elfutils = 0;
+}
+
+sub FilterAndPrint {
+  my ($profile, $symbols, $libs, $thread) = @_;
+
+  # Get total data in profile
+  my $total = TotalProfile($profile);
+
+  # Remove uniniteresting stack items
+  $profile = RemoveUninterestingFrames($symbols, $profile);
+
+  # Focus?
+  if ($main::opt_focus ne '') {
+    $profile = FocusProfile($symbols, $profile, $main::opt_focus);
+  }
+
+  # Ignore?
+  if ($main::opt_ignore ne '') {
+    $profile = IgnoreProfile($symbols, $profile, $main::opt_ignore);
+  }
+
+  my $calls = ExtractCalls($symbols, $profile);
+
+  # Reduce profiles to required output granularity, and also clean
+  # each stack trace so a given entry exists at most once.
+  my $reduced = ReduceProfile($symbols, $profile);
+
+  # Get derived profiles
+  my $flat = FlatProfile($reduced);
+  my $cumulative = CumulativeProfile($reduced);
+
+  # Print
+  if (!$main::opt_interactive) {
+    if ($main::opt_disasm) {
+      PrintDisassembly($libs, $flat, $cumulative, $main::opt_disasm);
+    } elsif ($main::opt_list) {
+      PrintListing($total, $libs, $flat, $cumulative, $main::opt_list, 0);
+    } elsif ($main::opt_text) {
+      # Make sure the output is empty when have nothing to report
+      # (only matters when --heapcheck is given but we must be
+      # compatible with old branches that did not pass --heapcheck always):
+      if ($total != 0) {
+        printf("Total%s: %s %s\n",
+               (defined($thread) ? " (t$thread)" : ""),
+               Unparse($total), Units());
+      }
+      PrintText($symbols, $flat, $cumulative, -1);
+    } elsif ($main::opt_raw) {
+      PrintSymbolizedProfile($symbols, $profile, $main::prog);
+    } elsif ($main::opt_collapsed) {
+      PrintCollapsedStacks($symbols, $profile);
+    } elsif ($main::opt_callgrind) {
+      PrintCallgrind($calls);
+    } else {
+      if (PrintDot($main::prog, $symbols, $profile, $flat, $cumulative, $total)) {
+        if ($main::opt_gv) {
+          RunGV(TempName($main::next_tmpfile, "ps"), "");
+        } elsif ($main::opt_evince) {
+          RunEvince(TempName($main::next_tmpfile, "pdf"), "");
+        } elsif ($main::opt_web) {
+          my $tmp = TempName($main::next_tmpfile, "svg");
+          RunWeb($tmp);
+          # The command we run might hand the file name off
+          # to an already running browser instance and then exit.
+          # Normally, we'd remove $tmp on exit (right now),
+          # but fork a child to remove $tmp a little later, so that the
+          # browser has time to load it first.
+          delete $main::tempnames{$tmp};
+          if (fork() == 0) {
+            sleep 5;
+            unlink($tmp);
+            exit(0);
+          }
+        }
+      } else {
+        cleanup();
+        exit(1);
+      }
+    }
+  } else {
+    InteractiveMode($profile, $symbols, $libs, $total);
+  }
+}
+
+sub Main() {
+  Init();
+  $main::collected_profile = undef;
+  @main::profile_files = ();
+  $main::op_time = time();
+
+  # Printing symbols is special and requires a lot less info that most.
+  if ($main::opt_symbols) {
+    PrintSymbols(*STDIN);   # Get /proc/maps and symbols output from stdin
+    return;
+  }
+
+  # Fetch all profile data
+  FetchDynamicProfiles();
+
+  # this will hold symbols that we read from the profile files
+  my $symbol_map = {};
+
+  # Read one profile, pick the last item on the list
+  my $data = ReadProfile($main::prog, pop(@main::profile_files));
+  my $profile = $data->{profile};
+  my $pcs = $data->{pcs};
+  my $libs = $data->{libs};   # Info about main program and shared libraries
+  $symbol_map = MergeSymbols($symbol_map, $data->{symbols});
+
+  # Add additional profiles, if available.
+  if (scalar(@main::profile_files) > 0) {
+    foreach my $pname (@main::profile_files) {
+      my $data2 = ReadProfile($main::prog, $pname);
+      $profile = AddProfile($profile, $data2->{profile});
+      $pcs = AddPcs($pcs, $data2->{pcs});
+      $symbol_map = MergeSymbols($symbol_map, $data2->{symbols});
+    }
+  }
+
+  # Subtract base from profile, if specified
+  if ($main::opt_base ne '') {
+    my $base = ReadProfile($main::prog, $main::opt_base);
+    $profile = SubtractProfile($profile, $base->{profile});
+    $pcs = AddPcs($pcs, $base->{pcs});
+    $symbol_map = MergeSymbols($symbol_map, $base->{symbols});
+  }
+
+  # Collect symbols
+  my $symbols;
+  if ($main::use_symbolized_profile) {
+    $symbols = FetchSymbols($pcs, $symbol_map);
+  } elsif ($main::use_symbol_page) {
+    $symbols = FetchSymbols($pcs);
+  } else {
+    # TODO(csilvers): $libs uses the /proc/self/maps data from profile1,
+    # which may differ from the data from subsequent profiles, especially
+    # if they were run on different machines.  Use appropriate libs for
+    # each pc somehow.
+    $symbols = ExtractSymbols($libs, $pcs);
+  }
+
+  if (!defined($main::opt_thread)) {
+    FilterAndPrint($profile, $symbols, $libs);
+  }
+  if (defined($data->{threads})) {
+    foreach my $thread (sort { $a <=> $b } keys(%{$data->{threads}})) {
+      if (defined($main::opt_thread) &&
+          ($main::opt_thread eq '*' || $main::opt_thread == $thread)) {
+        my $thread_profile = $data->{threads}{$thread};
+        FilterAndPrint($thread_profile, $symbols, $libs, $thread);
+      }
+    }
+  }
+
+  cleanup();
+  exit(0);
+}
+
+##### Entry Point #####
+
+Main();
+
+# Temporary code to detect if we're running on a Goobuntu system.
+# These systems don't have the right stuff installed for the special
+# Readline libraries to work, so as a temporary workaround, we default
+# to using the normal stdio code, rather than the fancier readline-based
+# code
+sub ReadlineMightFail {
+  if (-e '/lib/libtermcap.so.2') {
+    return 0;  # libtermcap exists, so readline should be okay
+  } else {
+    return 1;
+  }
+}
+
+sub RunGV {
+  my $fname = shift;
+  my $bg = shift;       # "" or " &" if we should run in background
+  if (!system(ShellEscape(@GV, "--version") . " >$dev_null 2>&1")) {
+    # Options using double dash are supported by this gv version.
+    # Also, turn on noantialias to better handle bug in gv for
+    # postscript files with large dimensions.
+    # TODO: Maybe we should not pass the --noantialias flag
+    # if the gv version is known to work properly without the flag.
+    system(ShellEscape(@GV, "--scale=$main::opt_scale", "--noantialias", $fname)
+           . $bg);
+  } else {
+    # Old gv version - only supports options that use single dash.
+    print STDERR ShellEscape(@GV, "-scale", $main::opt_scale) . "\n";
+    system(ShellEscape(@GV, "-scale", "$main::opt_scale", $fname) . $bg);
+  }
+}
+
+sub RunEvince {
+  my $fname = shift;
+  my $bg = shift;       # "" or " &" if we should run in background
+  system(ShellEscape(@EVINCE, $fname) . $bg);
+}
+
+sub RunWeb {
+  my $fname = shift;
+  print STDERR "Loading web page file:///$fname\n";
+
+  if (`uname` =~ /Darwin/) {
+    # OS X: open will use standard preference for SVG files.
+    system("/usr/bin/open", $fname);
+    return;
+  }
+
+  # Some kind of Unix; try generic symlinks, then specific browsers.
+  # (Stop once we find one.)
+  # Works best if the browser is already running.
+  my @alt = (
+    "/etc/alternatives/gnome-www-browser",
+    "/etc/alternatives/x-www-browser",
+    "google-chrome",
+    "firefox",
+  );
+  foreach my $b (@alt) {
+    if (system($b, $fname) == 0) {
+      return;
+    }
+  }
+
+  print STDERR "Could not load web browser.\n";
+}
+
+sub RunKcachegrind {
+  my $fname = shift;
+  my $bg = shift;       # "" or " &" if we should run in background
+  print STDERR "Starting '@KCACHEGRIND " . $fname . $bg . "'\n";
+  system(ShellEscape(@KCACHEGRIND, $fname) . $bg);
+}
+
+
+##### Interactive helper routines #####
+
+sub InteractiveMode {
+  $| = 1;  # Make output unbuffered for interactive mode
+  my ($orig_profile, $symbols, $libs, $total) = @_;
+
+  print STDERR "Welcome to jeprof!  For help, type 'help'.\n";
+
+  # Use ReadLine if it's installed and input comes from a console.
+  if ( -t STDIN &&
+       !ReadlineMightFail() &&
+       defined(eval {require Term::ReadLine}) ) {
+    my $term = new Term::ReadLine 'jeprof';
+    while ( defined ($_ = $term->readline('(jeprof) '))) {
+      $term->addhistory($_) if /\S/;
+      if (!InteractiveCommand($orig_profile, $symbols, $libs, $total, $_)) {
+        last;    # exit when we get an interactive command to quit
+      }
+    }
+  } else {       # don't have readline
+    while (1) {
+      print STDERR "(jeprof) ";
+      $_ = <STDIN>;
+      last if ! defined $_ ;
+      s/\r//g;         # turn windows-looking lines into unix-looking lines
+
+      # Save some flags that might be reset by InteractiveCommand()
+      my $save_opt_lines = $main::opt_lines;
+
+      if (!InteractiveCommand($orig_profile, $symbols, $libs, $total, $_)) {
+        last;    # exit when we get an interactive command to quit
+      }
+
+      # Restore flags
+      $main::opt_lines = $save_opt_lines;
+    }
+  }
+}
+
+# Takes two args: orig profile, and command to run.
+# Returns 1 if we should keep going, or 0 if we were asked to quit
+sub InteractiveCommand {
+  my($orig_profile, $symbols, $libs, $total, $command) = @_;
+  $_ = $command;                # just to make future m//'s easier
+  if (!defined($_)) {
+    print STDERR "\n";
+    return 0;
+  }
+  if (m/^\s*quit/) {
+    return 0;
+  }
+  if (m/^\s*help/) {
+    InteractiveHelpMessage();
+    return 1;
+  }
+  # Clear all the mode options -- mode is controlled by "$command"
+  $main::opt_text = 0;
+  $main::opt_callgrind = 0;
+  $main::opt_disasm = 0;
+  $main::opt_list = 0;
+  $main::opt_gv = 0;
+  $main::opt_evince = 0;
+  $main::opt_cum = 0;
+
+  if (m/^\s*(text|top)(\d*)\s*(.*)/) {
+    $main::opt_text = 1;
+
+    my $line_limit = ($2 ne "") ? int($2) : 10;
+
+    my $routine;
+    my $ignore;
+    ($routine, $ignore) = ParseInteractiveArgs($3);
+
+    my $profile = ProcessProfile($total, $orig_profile, $symbols, "", $ignore);
+    my $reduced = ReduceProfile($symbols, $profile);
+
+    # Get derived profiles
+    my $flat = FlatProfile($reduced);
+    my $cumulative = CumulativeProfile($reduced);
+
+    PrintText($symbols, $flat, $cumulative, $line_limit);
+    return 1;
+  }
+  if (m/^\s*callgrind\s*([^ \n]*)/) {
+    $main::opt_callgrind = 1;
+
+    # Get derived profiles
+    my $calls = ExtractCalls($symbols, $orig_profile);
+    my $filename = $1;
+    if ( $1 eq '' ) {
+      $filename = TempName($main::next_tmpfile, "callgrind");
+    }
+    PrintCallgrind($calls, $filename);
+    if ( $1 eq '' ) {
+      RunKcachegrind($filename, " & ");
+      $main::next_tmpfile++;
+    }
+
+    return 1;
+  }
+  if (m/^\s*(web)?list\s*(.+)/) {
+    my $html = (defined($1) && ($1 eq "web"));
+    $main::opt_list = 1;
+
+    my $routine;
+    my $ignore;
+    ($routine, $ignore) = ParseInteractiveArgs($2);
+
+    my $profile = ProcessProfile($total, $orig_profile, $symbols, "", $ignore);
+    my $reduced = ReduceProfile($symbols, $profile);
+
+    # Get derived profiles
+    my $flat = FlatProfile($reduced);
+    my $cumulative = CumulativeProfile($reduced);
+
+    PrintListing($total, $libs, $flat, $cumulative, $routine, $html);
+    return 1;
+  }
+  if (m/^\s*disasm\s*(.+)/) {
+    $main::opt_disasm = 1;
+
+    my $routine;
+    my $ignore;
+    ($routine, $ignore) = ParseInteractiveArgs($1);
+
+    # Process current profile to account for various settings
+    my $profile = ProcessProfile($total, $orig_profile, $symbols, "", $ignore);
+    my $reduced = ReduceProfile($symbols, $profile);
+
+    # Get derived profiles
+    my $flat = FlatProfile($reduced);
+    my $cumulative = CumulativeProfile($reduced);
+
+    PrintDisassembly($libs, $flat, $cumulative, $routine);
+    return 1;
+  }
+  if (m/^\s*(gv|web|evince)\s*(.*)/) {
+    $main::opt_gv = 0;
+    $main::opt_evince = 0;
+    $main::opt_web = 0;
+    if ($1 eq "gv") {
+      $main::opt_gv = 1;
+    } elsif ($1 eq "evince") {
+      $main::opt_evince = 1;
+    } elsif ($1 eq "web") {
+      $main::opt_web = 1;
+    }
+
+    my $focus;
+    my $ignore;
+    ($focus, $ignore) = ParseInteractiveArgs($2);
+
+    # Process current profile to account for various settings
+    my $profile = ProcessProfile($total, $orig_profile, $symbols,
+                                 $focus, $ignore);
+    my $reduced = ReduceProfile($symbols, $profile);
+
+    # Get derived profiles
+    my $flat = FlatProfile($reduced);
+    my $cumulative = CumulativeProfile($reduced);
+
+    if (PrintDot($main::prog, $symbols, $profile, $flat, $cumulative, $total)) {
+      if ($main::opt_gv) {
+        RunGV(TempName($main::next_tmpfile, "ps"), " &");
+      } elsif ($main::opt_evince) {
+        RunEvince(TempName($main::next_tmpfile, "pdf"), " &");
+      } elsif ($main::opt_web) {
+        RunWeb(TempName($main::next_tmpfile, "svg"));
+      }
+      $main::next_tmpfile++;
+    }
+    return 1;
+  }
+  if (m/^\s*$/) {
+    return 1;
+  }
+  print STDERR "Unknown command: try 'help'.\n";
+  return 1;
+}
+
+
+sub ProcessProfile {
+  my $total_count = shift;
+  my $orig_profile = shift;
+  my $symbols = shift;
+  my $focus = shift;
+  my $ignore = shift;
+
+  # Process current profile to account for various settings
+  my $profile = $orig_profile;
+  printf("Total: %s %s\n", Unparse($total_count), Units());
+  if ($focus ne '') {
+    $profile = FocusProfile($symbols, $profile, $focus);
+    my $focus_count = TotalProfile($profile);
+    printf("After focusing on '%s': %s %s of %s (%0.1f%%)\n",
+           $focus,
+           Unparse($focus_count), Units(),
+           Unparse($total_count), ($focus_count*100.0) / $total_count);
+  }
+  if ($ignore ne '') {
+    $profile = IgnoreProfile($symbols, $profile, $ignore);
+    my $ignore_count = TotalProfile($profile);
+    printf("After ignoring '%s': %s %s of %s (%0.1f%%)\n",
+           $ignore,
+           Unparse($ignore_count), Units(),
+           Unparse($total_count),
+           ($ignore_count*100.0) / $total_count);
+  }
+
+  return $profile;
+}
+
+sub InteractiveHelpMessage {
+  print STDERR <<ENDOFHELP;
+Interactive jeprof mode
+
+Commands:
+  gv
+  gv [focus] [-ignore1] [-ignore2]
+      Show graphical hierarchical display of current profile.  Without
+      any arguments, shows all samples in the profile.  With the optional
+      "focus" argument, restricts the samples shown to just those where
+      the "focus" regular expression matches a routine name on the stack
+      trace.
+
+  web
+  web [focus] [-ignore1] [-ignore2]
+      Like GV, but displays profile in your web browser instead of using
+      Ghostview. Works best if your web browser is already running.
+      To change the browser that gets used:
+      On Linux, set the /etc/alternatives/gnome-www-browser symlink.
+      On OS X, change the Finder association for SVG files.
+
+  list [routine_regexp] [-ignore1] [-ignore2]
+      Show source listing of routines whose names match "routine_regexp"
+
+  weblist [routine_regexp] [-ignore1] [-ignore2]
+     Displays a source listing of routines whose names match "routine_regexp"
+     in a web browser.  You can click on source lines to view the
+     corresponding disassembly.
+
+  top [--cum] [-ignore1] [-ignore2]
+  top20 [--cum] [-ignore1] [-ignore2]
+  top37 [--cum] [-ignore1] [-ignore2]
+      Show top lines ordered by flat profile count, or cumulative count
+      if --cum is specified.  If a number is present after 'top', the
+      top K routines will be shown (defaults to showing the top 10)
+
+  disasm [routine_regexp] [-ignore1] [-ignore2]
+      Show disassembly of routines whose names match "routine_regexp",
+      annotated with sample counts.
+
+  callgrind
+  callgrind [filename]
+      Generates callgrind file. If no filename is given, kcachegrind is called.
+
+  help - This listing
+  quit or ^D - End jeprof
+
+For commands that accept optional -ignore tags, samples where any routine in
+the stack trace matches the regular expression in any of the -ignore
+parameters will be ignored.
+
+Further pprof details are available at this location (or one similar):
+
+ /usr/doc/gperftools-$PPROF_VERSION/cpu_profiler.html
+ /usr/doc/gperftools-$PPROF_VERSION/heap_profiler.html
+
+ENDOFHELP
+}
+sub ParseInteractiveArgs {
+  my $args = shift;
+  my $focus = "";
+  my $ignore = "";
+  my @x = split(/ +/, $args);
+  foreach $a (@x) {
+    if ($a =~ m/^(--|-)lines$/) {
+      $main::opt_lines = 1;
+    } elsif ($a =~ m/^(--|-)cum$/) {
+      $main::opt_cum = 1;
+    } elsif ($a =~ m/^-(.*)/) {
+      $ignore .= (($ignore ne "") ? "|" : "" ) . $1;
+    } else {
+      $focus .= (($focus ne "") ? "|" : "" ) . $a;
+    }
+  }
+  if ($ignore ne "") {
+    print STDERR "Ignoring samples in call stacks that match '$ignore'\n";
+  }
+  return ($focus, $ignore);
+}
+
+##### Output code #####
+
+sub TempName {
+  my $fnum = shift;
+  my $ext = shift;
+  my $file = "$main::tmpfile_ps.$fnum.$ext";
+  $main::tempnames{$file} = 1;
+  return $file;
+}
+
+# Print profile data in packed binary format (64-bit) to standard out
+sub PrintProfileData {
+  my $profile = shift;
+
+  # print header (64-bit style)
+  # (zero) (header-size) (version) (sample-period) (zero)
+  print pack('L*', 0, 0, 3, 0, 0, 0, 1, 0, 0, 0);
+
+  foreach my $k (keys(%{$profile})) {
+    my $count = $profile->{$k};
+    my @addrs = split(/\n/, $k);
+    if ($#addrs >= 0) {
+      my $depth = $#addrs + 1;
+      # int(foo / 2**32) is the only reliable way to get rid of bottom
+      # 32 bits on both 32- and 64-bit systems.
+      print pack('L*', $count & 0xFFFFFFFF, int($count / 2**32));
+      print pack('L*', $depth & 0xFFFFFFFF, int($depth / 2**32));
+
+      foreach my $full_addr (@addrs) {
+        my $addr = $full_addr;
+        $addr =~ s/0x0*//;  # strip off leading 0x, zeroes
+        if (length($addr) > 16) {
+          print STDERR "Invalid address in profile: $full_addr\n";
+          next;
+        }
+        my $low_addr = substr($addr, -8);       # get last 8 hex chars
+        my $high_addr = substr($addr, -16, 8);  # get up to 8 more hex chars
+        print pack('L*', hex('0x' . $low_addr), hex('0x' . $high_addr));
+      }
+    }
+  }
+}
+
+# Print symbols and profile data
+sub PrintSymbolizedProfile {
+  my $symbols = shift;
+  my $profile = shift;
+  my $prog = shift;
+
+  $SYMBOL_PAGE =~ m,[^/]+$,;    # matches everything after the last slash
+  my $symbol_marker = $&;
+
+  print '--- ', $symbol_marker, "\n";
+  if (defined($prog)) {
+    print 'binary=', $prog, "\n";
+  }
+  while (my ($pc, $name) = each(%{$symbols})) {
+    my $sep = ' ';
+    print '0x', $pc;
+    # We have a list of function names, which include the inlined
+    # calls.  They are separated (and terminated) by --, which is
+    # illegal in function names.
+    for (my $j = 2; $j <= $#{$name}; $j += 3) {
+      print $sep, $name->[$j];
+      $sep = '--';
+    }
+    print "\n";
+  }
+  print '---', "\n";
+
+  my $profile_marker;
+  if ($main::profile_type eq 'heap') {
+    $HEAP_PAGE =~ m,[^/]+$,;    # matches everything after the last slash
+    $profile_marker = $&;
+  } elsif ($main::profile_type eq 'growth') {
+    $GROWTH_PAGE =~ m,[^/]+$,;    # matches everything after the last slash
+    $profile_marker = $&;
+  } elsif ($main::profile_type eq 'contention') {
+    $CONTENTION_PAGE =~ m,[^/]+$,;    # matches everything after the last slash
+    $profile_marker = $&;
+  } else { # elsif ($main::profile_type eq 'cpu')
+    $PROFILE_PAGE =~ m,[^/]+$,;    # matches everything after the last slash
+    $profile_marker = $&;
+  }
+
+  print '--- ', $profile_marker, "\n";
+  if (defined($main::collected_profile)) {
+    # if used with remote fetch, simply dump the collected profile to output.
+    open(SRC, "<$main::collected_profile");
+    while (<SRC>) {
+      print $_;
+    }
+    close(SRC);
+  } else {
+    # --raw/http: For everything to work correctly for non-remote profiles, we
+    # would need to extend PrintProfileData() to handle all possible profile
+    # types, re-enable the code that is currently disabled in ReadCPUProfile()
+    # and FixCallerAddresses(), and remove the remote profile dumping code in
+    # the block above.
+    die "--raw/http: jeprof can only dump remote profiles for --raw\n";
+    # dump a cpu-format profile to standard out
+    PrintProfileData($profile);
+  }
+}
+
+# Print text output
+sub PrintText {
+  my $symbols = shift;
+  my $flat = shift;
+  my $cumulative = shift;
+  my $line_limit = shift;
+
+  my $total = TotalProfile($flat);
+
+  # Which profile to sort by?
+  my $s = $main::opt_cum ? $cumulative : $flat;
+
+  my $running_sum = 0;
+  my $lines = 0;
+  foreach my $k (sort { GetEntry($s, $b) <=> GetEntry($s, $a) || $a cmp $b }
+                 keys(%{$cumulative})) {
+    my $f = GetEntry($flat, $k);
+    my $c = GetEntry($cumulative, $k);
+    $running_sum += $f;
+
+    my $sym = $k;
+    if (exists($symbols->{$k})) {
+      $sym = $symbols->{$k}->[0] . " " . $symbols->{$k}->[1];
+      if ($main::opt_addresses) {
+        $sym = $k . " " . $sym;
+      }
+    }
+
+    if ($f != 0 || $c != 0) {
+      printf("%8s %6s %6s %8s %6s %s\n",
+             Unparse($f),
+             Percent($f, $total),
+             Percent($running_sum, $total),
+             Unparse($c),
+             Percent($c, $total),
+             $sym);
+    }
+    $lines++;
+    last if ($line_limit >= 0 && $lines >= $line_limit);
+  }
+}
+
+# Callgrind format has a compression for repeated function and file
+# names.  You show the name the first time, and just use its number
+# subsequently.  This can cut down the file to about a third or a
+# quarter of its uncompressed size.  $key and $val are the key/value
+# pair that would normally be printed by callgrind; $map is a map from
+# value to number.
+sub CompressedCGName {
+  my($key, $val, $map) = @_;
+  my $idx = $map->{$val};
+  # For very short keys, providing an index hurts rather than helps.
+  if (length($val) <= 3) {
+    return "$key=$val\n";
+  } elsif (defined($idx)) {
+    return "$key=($idx)\n";
+  } else {
+    # scalar(keys $map) gives the number of items in the map.
+    $idx = scalar(keys(%{$map})) + 1;
+    $map->{$val} = $idx;
+    return "$key=($idx) $val\n";
+  }
+}
+
+# Print the call graph in a way that's suiteable for callgrind.
+sub PrintCallgrind {
+  my $calls = shift;
+  my $filename;
+  my %filename_to_index_map;
+  my %fnname_to_index_map;
+
+  if ($main::opt_interactive) {
+    $filename = shift;
+    print STDERR "Writing callgrind file to '$filename'.\n"
+  } else {
+    $filename = "&STDOUT";
+  }
+  open(CG, ">$filename");
+  printf CG ("events: Hits\n\n");
+  foreach my $call ( map { $_->[0] }
+                     sort { $a->[1] cmp $b ->[1] ||
+                            $a->[2] <=> $b->[2] }
+                     map { /([^:]+):(\d+):([^ ]+)( -> ([^:]+):(\d+):(.+))?/;
+                           [$_, $1, $2] }
+                     keys %$calls ) {
+    my $count = int($calls->{$call});
+    $call =~ /([^:]+):(\d+):([^ ]+)( -> ([^:]+):(\d+):(.+))?/;
+    my ( $caller_file, $caller_line, $caller_function,
+         $callee_file, $callee_line, $callee_function ) =
+       ( $1, $2, $3, $5, $6, $7 );
+
+    # TODO(csilvers): for better compression, collect all the
+    # caller/callee_files and functions first, before printing
+    # anything, and only compress those referenced more than once.
+    printf CG CompressedCGName("fl", $caller_file, \%filename_to_index_map);
+    printf CG CompressedCGName("fn", $caller_function, \%fnname_to_index_map);
+    if (defined $6) {
+      printf CG CompressedCGName("cfl", $callee_file, \%filename_to_index_map);
+      printf CG CompressedCGName("cfn", $callee_function, \%fnname_to_index_map);
+      printf CG ("calls=$count $callee_line\n");
+    }
+    printf CG ("$caller_line $count\n\n");
+  }
+}
+
+# Print disassembly for all all routines that match $main::opt_disasm
+sub PrintDisassembly {
+  my $libs = shift;
+  my $flat = shift;
+  my $cumulative = shift;
+  my $disasm_opts = shift;
+
+  my $total = TotalProfile($flat);
+
+  foreach my $lib (@{$libs}) {
+    my $symbol_table = GetProcedureBoundaries($lib->[0], $disasm_opts);
+    my $offset = AddressSub($lib->[1], $lib->[3]);
+    foreach my $routine (sort ByName keys(%{$symbol_table})) {
+      my $start_addr = $symbol_table->{$routine}->[0];
+      my $end_addr = $symbol_table->{$routine}->[1];
+      # See if there are any samples in this routine
+      my $length = hex(AddressSub($end_addr, $start_addr));
+      my $addr = AddressAdd($start_addr, $offset);
+      for (my $i = 0; $i < $length; $i++) {
+        if (defined($cumulative->{$addr})) {
+          PrintDisassembledFunction($lib->[0], $offset,
+                                    $routine, $flat, $cumulative,
+                                    $start_addr, $end_addr, $total);
+          last;
+        }
+        $addr = AddressInc($addr);
+      }
+    }
+  }
+}
+
+# Return reference to array of tuples of the form:
+#       [start_address, filename, linenumber, instruction, limit_address]
+# E.g.,
+#       ["0x806c43d", "/foo/bar.cc", 131, "ret", "0x806c440"]
+sub Disassemble {
+  my $prog = shift;
+  my $offset = shift;
+  my $start_addr = shift;
+  my $end_addr = shift;
+
+  my $objdump = $obj_tool_map{"objdump"};
+  my $cmd = ShellEscape($objdump, "-C", "-d", "-l", "--no-show-raw-insn",
+                        "--start-address=0x$start_addr",
+                        "--stop-address=0x$end_addr", $prog);
+  open(OBJDUMP, "$cmd |") || error("$cmd: $!\n");
+  my @result = ();
+  my $filename = "";
+  my $linenumber = -1;
+  my $last = ["", "", "", ""];
+  while (<OBJDUMP>) {
+    s/\r//g;         # turn windows-looking lines into unix-looking lines
+    chop;
+    if (m|\s*([^:\s]+):(\d+)\s*$|) {
+      # Location line of the form:
+      #   <filename>:<linenumber>
+      $filename = $1;
+      $linenumber = $2;
+    } elsif (m/^ +([0-9a-f]+):\s*(.*)/) {
+      # Disassembly line -- zero-extend address to full length
+      my $addr = HexExtend($1);
+      my $k = AddressAdd($addr, $offset);
+      $last->[4] = $k;   # Store ending address for previous instruction
+      $last = [$k, $filename, $linenumber, $2, $end_addr];
+      push(@result, $last);
+    }
+  }
+  close(OBJDUMP);
+  return @result;
+}
+
+# The input file should contain lines of the form /proc/maps-like
+# output (same format as expected from the profiles) or that looks
+# like hex addresses (like "0xDEADBEEF").  We will parse all
+# /proc/maps output, and for all the hex addresses, we will output
+# "short" symbol names, one per line, in the same order as the input.
+sub PrintSymbols {
+  my $maps_and_symbols_file = shift;
+
+  # ParseLibraries expects pcs to be in a set.  Fine by us...
+  my @pclist = ();   # pcs in sorted order
+  my $pcs = {};
+  my $map = "";
+  foreach my $line (<$maps_and_symbols_file>) {
+    $line =~ s/\r//g;    # turn windows-looking lines into unix-looking lines
+    if ($line =~ /\b(0x[0-9a-f]+)\b/i) {
+      push(@pclist, HexExtend($1));
+      $pcs->{$pclist[-1]} = 1;
+    } else {
+      $map .= $line;
+    }
+  }
+
+  my $libs = ParseLibraries($main::prog, $map, $pcs);
+  my $symbols = ExtractSymbols($libs, $pcs);
+
+  foreach my $pc (@pclist) {
+    # ->[0] is the shortname, ->[2] is the full name
+    print(($symbols->{$pc}->[0] || "??") . "\n");
+  }
+}
+
+
+# For sorting functions by name
+sub ByName {
+  return ShortFunctionName($a) cmp ShortFunctionName($b);
+}
+
+# Print source-listing for all all routines that match $list_opts
+sub PrintListing {
+  my $total = shift;
+  my $libs = shift;
+  my $flat = shift;
+  my $cumulative = shift;
+  my $list_opts = shift;
+  my $html = shift;
+
+  my $output = \*STDOUT;
+  my $fname = "";
+
+  if ($html) {
+    # Arrange to write the output to a temporary file
+    $fname = TempName($main::next_tmpfile, "html");
+    $main::next_tmpfile++;
+    if (!open(TEMP, ">$fname")) {
+      print STDERR "$fname: $!\n";
+      return;
+    }
+    $output = \*TEMP;
+    print $output HtmlListingHeader();
+    printf $output ("<div class=\"legend\">%s<br>Total: %s %s</div>\n",
+                    $main::prog, Unparse($total), Units());
+  }
+
+  my $listed = 0;
+  foreach my $lib (@{$libs}) {
+    my $symbol_table = GetProcedureBoundaries($lib->[0], $list_opts);
+    my $offset = AddressSub($lib->[1], $lib->[3]);
+    foreach my $routine (sort ByName keys(%{$symbol_table})) {
+      # Print if there are any samples in this routine
+      my $start_addr = $symbol_table->{$routine}->[0];
+      my $end_addr = $symbol_table->{$routine}->[1];
+      my $length = hex(AddressSub($end_addr, $start_addr));
+      my $addr = AddressAdd($start_addr, $offset);
+      for (my $i = 0; $i < $length; $i++) {
+        if (defined($cumulative->{$addr})) {
+          $listed += PrintSource(
+            $lib->[0], $offset,
+            $routine, $flat, $cumulative,
+            $start_addr, $end_addr,
+            $html,
+            $output);
+          last;
+        }
+        $addr = AddressInc($addr);
+      }
+    }
+  }
+
+  if ($html) {
+    if ($listed > 0) {
+      print $output HtmlListingFooter();
+      close($output);
+      RunWeb($fname);
+    } else {
+      close($output);
+      unlink($fname);
+    }
+  }
+}
+
+sub HtmlListingHeader {
+  return <<'EOF';
+<DOCTYPE html>
+<html>
+<head>
+<title>Pprof listing</title>
+<style type="text/css">
+body {
+  font-family: sans-serif;
+}
+h1 {
+  font-size: 1.5em;
+  margin-bottom: 4px;
+}
+.legend {
+  font-size: 1.25em;
+}
+.line {
+  color: #aaaaaa;
+}
+.nop {
+  color: #aaaaaa;
+}
+.unimportant {
+  color: #cccccc;
+}
+.disasmloc {
+  color: #000000;
+}
+.deadsrc {
+  cursor: pointer;
+}
+.deadsrc:hover {
+  background-color: #eeeeee;
+}
+.livesrc {
+  color: #0000ff;
+  cursor: pointer;
+}
+.livesrc:hover {
+  background-color: #eeeeee;
+}
+.asm {
+  color: #008800;
+  display: none;
+}
+</style>
+<script type="text/javascript">
+function jeprof_toggle_asm(e) {
+  var target;
+  if (!e) e = window.event;
+  if (e.target) target = e.target;
+  else if (e.srcElement) target = e.srcElement;
+
+  if (target) {
+    var asm = target.nextSibling;
+    if (asm && asm.className == "asm") {
+      asm.style.display = (asm.style.display == "block" ? "" : "block");
+      e.preventDefault();
+      return false;
+    }
+  }
+}
+</script>
+</head>
+<body>
+EOF
+}
+
+sub HtmlListingFooter {
+  return <<'EOF';
+</body>
+</html>
+EOF
+}
+
+sub HtmlEscape {
+  my $text = shift;
+  $text =~ s/&/&amp;/g;
+  $text =~ s/</&lt;/g;
+  $text =~ s/>/&gt;/g;
+  return $text;
+}
+
+# Returns the indentation of the line, if it has any non-whitespace
+# characters.  Otherwise, returns -1.
+sub Indentation {
+  my $line = shift;
+  if (m/^(\s*)\S/) {
+    return length($1);
+  } else {
+    return -1;
+  }
+}
+
+# If the symbol table contains inlining info, Disassemble() may tag an
+# instruction with a location inside an inlined function.  But for
+# source listings, we prefer to use the location in the function we
+# are listing.  So use MapToSymbols() to fetch full location
+# information for each instruction and then pick out the first
+# location from a location list (location list contains callers before
+# callees in case of inlining).
+#
+# After this routine has run, each entry in $instructions contains:
+#   [0] start address
+#   [1] filename for function we are listing
+#   [2] line number for function we are listing
+#   [3] disassembly
+#   [4] limit address
+#   [5] most specific filename (may be different from [1] due to inlining)
+#   [6] most specific line number (may be different from [2] due to inlining)
+sub GetTopLevelLineNumbers {
+  my ($lib, $offset, $instructions) = @_;
+  my $pcs = [];
+  for (my $i = 0; $i <= $#{$instructions}; $i++) {
+    push(@{$pcs}, $instructions->[$i]->[0]);
+  }
+  my $symbols = {};
+  MapToSymbols($lib, $offset, $pcs, $symbols);
+  for (my $i = 0; $i <= $#{$instructions}; $i++) {
+    my $e = $instructions->[$i];
+    push(@{$e}, $e->[1]);
+    push(@{$e}, $e->[2]);
+    my $addr = $e->[0];
+    my $sym = $symbols->{$addr};
+    if (defined($sym)) {
+      if ($#{$sym} >= 2 && $sym->[1] =~ m/^(.*):(\d+)$/) {
+        $e->[1] = $1;  # File name
+        $e->[2] = $2;  # Line number
+      }
+    }
+  }
+}
+
+# Print source-listing for one routine
+sub PrintSource {
+  my $prog = shift;
+  my $offset = shift;
+  my $routine = shift;
+  my $flat = shift;
+  my $cumulative = shift;
+  my $start_addr = shift;
+  my $end_addr = shift;
+  my $html = shift;
+  my $output = shift;
+
+  # Disassemble all instructions (just to get line numbers)
+  my @instructions = Disassemble($prog, $offset, $start_addr, $end_addr);
+  GetTopLevelLineNumbers($prog, $offset, \@instructions);
+
+  # Hack 1: assume that the first source file encountered in the
+  # disassembly contains the routine
+  my $filename = undef;
+  for (my $i = 0; $i <= $#instructions; $i++) {
+    if ($instructions[$i]->[2] >= 0) {
+      $filename = $instructions[$i]->[1];
+      last;
+    }
+  }
+  if (!defined($filename)) {
+    print STDERR "no filename found in $routine\n";
+    return 0;
+  }
+
+  # Hack 2: assume that the largest line number from $filename is the
+  # end of the procedure.  This is typically safe since if P1 contains
+  # an inlined call to P2, then P2 usually occurs earlier in the
+  # source file.  If this does not work, we might have to compute a
+  # density profile or just print all regions we find.
+  my $lastline = 0;
+  for (my $i = 0; $i <= $#instructions; $i++) {
+    my $f = $instructions[$i]->[1];
+    my $l = $instructions[$i]->[2];
+    if (($f eq $filename) && ($l > $lastline)) {
+      $lastline = $l;
+    }
+  }
+
+  # Hack 3: assume the first source location from "filename" is the start of
+  # the source code.
+  my $firstline = 1;
+  for (my $i = 0; $i <= $#instructions; $i++) {
+    if ($instructions[$i]->[1] eq $filename) {
+      $firstline = $instructions[$i]->[2];
+      last;
+    }
+  }
+
+  # Hack 4: Extend last line forward until its indentation is less than
+  # the indentation we saw on $firstline
+  my $oldlastline = $lastline;
+  {
+    if (!open(FILE, "<$filename")) {
+      print STDERR "$filename: $!\n";
+      return 0;
+    }
+    my $l = 0;
+    my $first_indentation = -1;
+    while (<FILE>) {
+      s/\r//g;         # turn windows-looking lines into unix-looking lines
+      $l++;
+      my $indent = Indentation($_);
+      if ($l >= $firstline) {
+        if ($first_indentation < 0 && $indent >= 0) {
+          $first_indentation = $indent;
+          last if ($first_indentation == 0);
+        }
+      }
+      if ($l >= $lastline && $indent >= 0) {
+        if ($indent >= $first_indentation) {
+          $lastline = $l+1;
+        } else {
+          last;
+        }
+      }
+    }
+    close(FILE);
+  }
+
+  # Assign all samples to the range $firstline,$lastline,
+  # Hack 4: If an instruction does not occur in the range, its samples
+  # are moved to the next instruction that occurs in the range.
+  my $samples1 = {};        # Map from line number to flat count
+  my $samples2 = {};        # Map from line number to cumulative count
+  my $running1 = 0;         # Unassigned flat counts
+  my $running2 = 0;         # Unassigned cumulative counts
+  my $total1 = 0;           # Total flat counts
+  my $total2 = 0;           # Total cumulative counts
+  my %disasm = ();          # Map from line number to disassembly
+  my $running_disasm = "";  # Unassigned disassembly
+  my $skip_marker = "---\n";
+  if ($html) {
+    $skip_marker = "";
+    for (my $l = $firstline; $l <= $lastline; $l++) {
+      $disasm{$l} = "";
+    }
+  }
+  my $last_dis_filename = '';
+  my $last_dis_linenum = -1;
+  my $last_touched_line = -1;  # To detect gaps in disassembly for a line
+  foreach my $e (@instructions) {
+    # Add up counts for all address that fall inside this instruction
+    my $c1 = 0;
+    my $c2 = 0;
+    for (my $a = $e->[0]; $a lt $e->[4]; $a = AddressInc($a)) {
+      $c1 += GetEntry($flat, $a);
+      $c2 += GetEntry($cumulative, $a);
+    }
+
+    if ($html) {
+      my $dis = sprintf("      %6s %6s \t\t%8s: %s ",
+                        HtmlPrintNumber($c1),
+                        HtmlPrintNumber($c2),
+                        UnparseAddress($offset, $e->[0]),
+                        CleanDisassembly($e->[3]));
+
+      # Append the most specific source line associated with this instruction
+      if (length($dis) < 80) { $dis .= (' ' x (80 - length($dis))) };
+      $dis = HtmlEscape($dis);
+      my $f = $e->[5];
+      my $l = $e->[6];
+      if ($f ne $last_dis_filename) {
+        $dis .= sprintf("<span class=disasmloc>%s:%d</span>",
+                        HtmlEscape(CleanFileName($f)), $l);
+      } elsif ($l ne $last_dis_linenum) {
+        # De-emphasize the unchanged file name portion
+        $dis .= sprintf("<span class=unimportant>%s</span>" .
+                        "<span class=disasmloc>:%d</span>",
+                        HtmlEscape(CleanFileName($f)), $l);
+      } else {
+        # De-emphasize the entire location
+        $dis .= sprintf("<span class=unimportant>%s:%d</span>",
+                        HtmlEscape(CleanFileName($f)), $l);
+      }
+      $last_dis_filename = $f;
+      $last_dis_linenum = $l;
+      $running_disasm .= $dis;
+      $running_disasm .= "\n";
+    }
+
+    $running1 += $c1;
+    $running2 += $c2;
+    $total1 += $c1;
+    $total2 += $c2;
+    my $file = $e->[1];
+    my $line = $e->[2];
+    if (($file eq $filename) &&
+        ($line >= $firstline) &&
+        ($line <= $lastline)) {
+      # Assign all accumulated samples to this line
+      AddEntry($samples1, $line, $running1);
+      AddEntry($samples2, $line, $running2);
+      $running1 = 0;
+      $running2 = 0;
+      if ($html) {
+        if ($line != $last_touched_line && $disasm{$line} ne '') {
+          $disasm{$line} .= "\n";
+        }
+        $disasm{$line} .= $running_disasm;
+        $running_disasm = '';
+        $last_touched_line = $line;
+      }
+    }
+  }
+
+  # Assign any leftover samples to $lastline
+  AddEntry($samples1, $lastline, $running1);
+  AddEntry($samples2, $lastline, $running2);
+  if ($html) {
+    if ($lastline != $last_touched_line && $disasm{$lastline} ne '') {
+      $disasm{$lastline} .= "\n";
+    }
+    $disasm{$lastline} .= $running_disasm;
+  }
+
+  if ($html) {
+    printf $output (
+      "<h1>%s</h1>%s\n<pre onClick=\"jeprof_toggle_asm()\">\n" .
+      "Total:%6s %6s (flat / cumulative %s)\n",
+      HtmlEscape(ShortFunctionName($routine)),
+      HtmlEscape(CleanFileName($filename)),
+      Unparse($total1),
+      Unparse($total2),
+      Units());
+  } else {
+    printf $output (
+      "ROUTINE ====================== %s in %s\n" .
+      "%6s %6s Total %s (flat / cumulative)\n",
+      ShortFunctionName($routine),
+      CleanFileName($filename),
+      Unparse($total1),
+      Unparse($total2),
+      Units());
+  }
+  if (!open(FILE, "<$filename")) {
+    print STDERR "$filename: $!\n";
+    return 0;
+  }
+  my $l = 0;
+  while (<FILE>) {
+    s/\r//g;         # turn windows-looking lines into unix-looking lines
+    $l++;
+    if ($l >= $firstline - 5 &&
+        (($l <= $oldlastline + 5) || ($l <= $lastline))) {
+      chop;
+      my $text = $_;
+      if ($l == $firstline) { print $output $skip_marker; }
+      my $n1 = GetEntry($samples1, $l);
+      my $n2 = GetEntry($samples2, $l);
+      if ($html) {
+        # Emit a span that has one of the following classes:
+        #    livesrc -- has samples
+        #    deadsrc -- has disassembly, but with no samples
+        #    nop     -- has no matching disasembly
+        # Also emit an optional span containing disassembly.
+        my $dis = $disasm{$l};
+        my $asm = "";
+        if (defined($dis) && $dis ne '') {
+          $asm = "<span class=\"asm\">" . $dis . "</span>";
+        }
+        my $source_class = (($n1 + $n2 > 0)
+                            ? "livesrc"
+                            : (($asm ne "") ? "deadsrc" : "nop"));
+        printf $output (
+          "<span class=\"line\">%5d</span> " .
+          "<span class=\"%s\">%6s %6s %s</span>%s\n",
+          $l, $source_class,
+          HtmlPrintNumber($n1),
+          HtmlPrintNumber($n2),
+          HtmlEscape($text),
+          $asm);
+      } else {
+        printf $output(
+          "%6s %6s %4d: %s\n",
+          UnparseAlt($n1),
+          UnparseAlt($n2),
+          $l,
+          $text);
+      }
+      if ($l == $lastline)  { print $output $skip_marker; }
+    };
+  }
+  close(FILE);
+  if ($html) {
+    print $output "</pre>\n";
+  }
+  return 1;
+}
+
+# Return the source line for the specified file/linenumber.
+# Returns undef if not found.
+sub SourceLine {
+  my $file = shift;
+  my $line = shift;
+
+  # Look in cache
+  if (!defined($main::source_cache{$file})) {
+    if (100 < scalar keys(%main::source_cache)) {
+      # Clear the cache when it gets too big
+      $main::source_cache = ();
+    }
+
+    # Read all lines from the file
+    if (!open(FILE, "<$file")) {
+      print STDERR "$file: $!\n";
+      $main::source_cache{$file} = [];  # Cache the negative result
+      return undef;
+    }
+    my $lines = [];
+    push(@{$lines}, "");        # So we can use 1-based line numbers as indices
+    while (<FILE>) {
+      push(@{$lines}, $_);
+    }
+    close(FILE);
+
+    # Save the lines in the cache
+    $main::source_cache{$file} = $lines;
+  }
+
+  my $lines = $main::source_cache{$file};
+  if (($line < 0) || ($line > $#{$lines})) {
+    return undef;
+  } else {
+    return $lines->[$line];
+  }
+}
+
+# Print disassembly for one routine with interspersed source if available
+sub PrintDisassembledFunction {
+  my $prog = shift;
+  my $offset = shift;
+  my $routine = shift;
+  my $flat = shift;
+  my $cumulative = shift;
+  my $start_addr = shift;
+  my $end_addr = shift;
+  my $total = shift;
+
+  # Disassemble all instructions
+  my @instructions = Disassemble($prog, $offset, $start_addr, $end_addr);
+
+  # Make array of counts per instruction
+  my @flat_count = ();
+  my @cum_count = ();
+  my $flat_total = 0;
+  my $cum_total = 0;
+  foreach my $e (@instructions) {
+    # Add up counts for all address that fall inside this instruction
+    my $c1 = 0;
+    my $c2 = 0;
+    for (my $a = $e->[0]; $a lt $e->[4]; $a = AddressInc($a)) {
+      $c1 += GetEntry($flat, $a);
+      $c2 += GetEntry($cumulative, $a);
+    }
+    push(@flat_count, $c1);
+    push(@cum_count, $c2);
+    $flat_total += $c1;
+    $cum_total += $c2;
+  }
+
+  # Print header with total counts
+  printf("ROUTINE ====================== %s\n" .
+         "%6s %6s %s (flat, cumulative) %.1f%% of total\n",
+         ShortFunctionName($routine),
+         Unparse($flat_total),
+         Unparse($cum_total),
+         Units(),
+         ($cum_total * 100.0) / $total);
+
+  # Process instructions in order
+  my $current_file = "";
+  for (my $i = 0; $i <= $#instructions; ) {
+    my $e = $instructions[$i];
+
+    # Print the new file name whenever we switch files
+    if ($e->[1] ne $current_file) {
+      $current_file = $e->[1];
+      my $fname = $current_file;
+      $fname =~ s|^\./||;   # Trim leading "./"
+
+      # Shorten long file names
+      if (length($fname) >= 58) {
+        $fname = "..." . substr($fname, -55);
+      }
+      printf("-------------------- %s\n", $fname);
+    }
+
+    # TODO: Compute range of lines to print together to deal with
+    # small reorderings.
+    my $first_line = $e->[2];
+    my $last_line = $first_line;
+    my %flat_sum = ();
+    my %cum_sum = ();
+    for (my $l = $first_line; $l <= $last_line; $l++) {
+      $flat_sum{$l} = 0;
+      $cum_sum{$l} = 0;
+    }
+
+    # Find run of instructions for this range of source lines
+    my $first_inst = $i;
+    while (($i <= $#instructions) &&
+           ($instructions[$i]->[2] >= $first_line) &&
+           ($instructions[$i]->[2] <= $last_line)) {
+      $e = $instructions[$i];
+      $flat_sum{$e->[2]} += $flat_count[$i];
+      $cum_sum{$e->[2]} += $cum_count[$i];
+      $i++;
+    }
+    my $last_inst = $i - 1;
+
+    # Print source lines
+    for (my $l = $first_line; $l <= $last_line; $l++) {
+      my $line = SourceLine($current_file, $l);
+      if (!defined($line)) {
+        $line = "?\n";
+        next;
+      } else {
+        $line =~ s/^\s+//;
+      }
+      printf("%6s %6s %5d: %s",
+             UnparseAlt($flat_sum{$l}),
+             UnparseAlt($cum_sum{$l}),
+             $l,
+             $line);
+    }
+
+    # Print disassembly
+    for (my $x = $first_inst; $x <= $last_inst; $x++) {
+      my $e = $instructions[$x];
+      printf("%6s %6s    %8s: %6s\n",
+             UnparseAlt($flat_count[$x]),
+             UnparseAlt($cum_count[$x]),
+             UnparseAddress($offset, $e->[0]),
+             CleanDisassembly($e->[3]));
+    }
+  }
+}
+
+# Print DOT graph
+sub PrintDot {
+  my $prog = shift;
+  my $symbols = shift;
+  my $raw = shift;
+  my $flat = shift;
+  my $cumulative = shift;
+  my $overall_total = shift;
+
+  # Get total
+  my $local_total = TotalProfile($flat);
+  my $nodelimit = int($main::opt_nodefraction * $local_total);
+  my $edgelimit = int($main::opt_edgefraction * $local_total);
+  my $nodecount = $main::opt_nodecount;
+
+  # Find nodes to include
+  my @list = (sort { abs(GetEntry($cumulative, $b)) <=>
+                     abs(GetEntry($cumulative, $a))
+                     || $a cmp $b }
+              keys(%{$cumulative}));
+  my $last = $nodecount - 1;
+  if ($last > $#list) {
+    $last = $#list;
+  }
+  while (($last >= 0) &&
+         (abs(GetEntry($cumulative, $list[$last])) <= $nodelimit)) {
+    $last--;
+  }
+  if ($last < 0) {
+    print STDERR "No nodes to print\n";
+    return 0;
+  }
+
+  if ($nodelimit > 0 || $edgelimit > 0) {
+    printf STDERR ("Dropping nodes with <= %s %s; edges with <= %s abs(%s)\n",
+                   Unparse($nodelimit), Units(),
+                   Unparse($edgelimit), Units());
+  }
+
+  # Open DOT output file
+  my $output;
+  my $escaped_dot = ShellEscape(@DOT);
+  my $escaped_ps2pdf = ShellEscape(@PS2PDF);
+  if ($main::opt_gv) {
+    my $escaped_outfile = ShellEscape(TempName($main::next_tmpfile, "ps"));
+    $output = "| $escaped_dot -Tps2 >$escaped_outfile";
+  } elsif ($main::opt_evince) {
+    my $escaped_outfile = ShellEscape(TempName($main::next_tmpfile, "pdf"));
+    $output = "| $escaped_dot -Tps2 | $escaped_ps2pdf - $escaped_outfile";
+  } elsif ($main::opt_ps) {
+    $output = "| $escaped_dot -Tps2";
+  } elsif ($main::opt_pdf) {
+    $output = "| $escaped_dot -Tps2 | $escaped_ps2pdf - -";
+  } elsif ($main::opt_web || $main::opt_svg) {
+    # We need to post-process the SVG, so write to a temporary file always.
+    my $escaped_outfile = ShellEscape(TempName($main::next_tmpfile, "svg"));
+    $output = "| $escaped_dot -Tsvg >$escaped_outfile";
+  } elsif ($main::opt_gif) {
+    $output = "| $escaped_dot -Tgif";
+  } else {
+    $output = ">&STDOUT";
+  }
+  open(DOT, $output) || error("$output: $!\n");
+
+  # Title
+  printf DOT ("digraph \"%s; %s %s\" {\n",
+              $prog,
+              Unparse($overall_total),
+              Units());
+  if ($main::opt_pdf) {
+    # The output is more printable if we set the page size for dot.
+    printf DOT ("size=\"8,11\"\n");
+  }
+  printf DOT ("node [width=0.375,height=0.25];\n");
+
+  # Print legend
+  printf DOT ("Legend [shape=box,fontsize=24,shape=plaintext," .
+              "label=\"%s\\l%s\\l%s\\l%s\\l%s\\l\"];\n",
+              $prog,
+              sprintf("Total %s: %s", Units(), Unparse($overall_total)),
+              sprintf("Focusing on: %s", Unparse($local_total)),
+              sprintf("Dropped nodes with <= %s abs(%s)",
+                      Unparse($nodelimit), Units()),
+              sprintf("Dropped edges with <= %s %s",
+                      Unparse($edgelimit), Units())
+              );
+
+  # Print nodes
+  my %node = ();
+  my $nextnode = 1;
+  foreach my $a (@list[0..$last]) {
+    # Pick font size
+    my $f = GetEntry($flat, $a);
+    my $c = GetEntry($cumulative, $a);
+
+    my $fs = 8;
+    if ($local_total > 0) {
+      $fs = 8 + (50.0 * sqrt(abs($f * 1.0 / $local_total)));
+    }
+
+    $node{$a} = $nextnode++;
+    my $sym = $a;
+    $sym =~ s/\s+/\\n/g;
+    $sym =~ s/::/\\n/g;
+
+    # Extra cumulative info to print for non-leaves
+    my $extra = "";
+    if ($f != $c) {
+      $extra = sprintf("\\rof %s (%s)",
+                       Unparse($c),
+                       Percent($c, $local_total));
+    }
+    my $style = "";
+    if ($main::opt_heapcheck) {
+      if ($f > 0) {
+        # make leak-causing nodes more visible (add a background)
+        $style = ",style=filled,fillcolor=gray"
+      } elsif ($f < 0) {
+        # make anti-leak-causing nodes (which almost never occur)
+        # stand out as well (triple border)
+        $style = ",peripheries=3"
+      }
+    }
+
+    printf DOT ("N%d [label=\"%s\\n%s (%s)%s\\r" .
+                "\",shape=box,fontsize=%.1f%s];\n",
+                $node{$a},
+                $sym,
+                Unparse($f),
+                Percent($f, $local_total),
+                $extra,
+                $fs,
+                $style,
+               );
+  }
+
+  # Get edges and counts per edge
+  my %edge = ();
+  my $n;
+  my $fullname_to_shortname_map = {};
+  FillFullnameToShortnameMap($symbols, $fullname_to_shortname_map);
+  foreach my $k (keys(%{$raw})) {
+    # TODO: omit low %age edges
+    $n = $raw->{$k};
+    my @translated = TranslateStack($symbols, $fullname_to_shortname_map, $k);
+    for (my $i = 1; $i <= $#translated; $i++) {
+      my $src = $translated[$i];
+      my $dst = $translated[$i-1];
+      #next if ($src eq $dst);  # Avoid self-edges?
+      if (exists($node{$src}) && exists($node{$dst})) {
+        my $edge_label = "$src\001$dst";
+        if (!exists($edge{$edge_label})) {
+          $edge{$edge_label} = 0;
+        }
+        $edge{$edge_label} += $n;
+      }
+    }
+  }
+
+  # Print edges (process in order of decreasing counts)
+  my %indegree = ();   # Number of incoming edges added per node so far
+  my %outdegree = ();  # Number of outgoing edges added per node so far
+  foreach my $e (sort { $edge{$b} <=> $edge{$a} } keys(%edge)) {
+    my @x = split(/\001/, $e);
+    $n = $edge{$e};
+
+    # Initialize degree of kept incoming and outgoing edges if necessary
+    my $src = $x[0];
+    my $dst = $x[1];
+    if (!exists($outdegree{$src})) { $outdegree{$src} = 0; }
+    if (!exists($indegree{$dst})) { $indegree{$dst} = 0; }
+
+    my $keep;
+    if ($indegree{$dst} == 0) {
+      # Keep edge if needed for reachability
+      $keep = 1;
+    } elsif (abs($n) <= $edgelimit) {
+      # Drop if we are below --edgefraction
+      $keep = 0;
+    } elsif ($outdegree{$src} >= $main::opt_maxdegree ||
+             $indegree{$dst} >= $main::opt_maxdegree) {
+      # Keep limited number of in/out edges per node
+      $keep = 0;
+    } else {
+      $keep = 1;
+    }
+
+    if ($keep) {
+      $outdegree{$src}++;
+      $indegree{$dst}++;
+
+      # Compute line width based on edge count
+      my $fraction = abs($local_total ? (3 * ($n / $local_total)) : 0);
+      if ($fraction > 1) { $fraction = 1; }
+      my $w = $fraction * 2;
+      if ($w < 1 && ($main::opt_web || $main::opt_svg)) {
+        # SVG output treats line widths < 1 poorly.
+        $w = 1;
+      }
+
+      # Dot sometimes segfaults if given edge weights that are too large, so
+      # we cap the weights at a large value
+      my $edgeweight = abs($n) ** 0.7;
+      if ($edgeweight > 100000) { $edgeweight = 100000; }
+      $edgeweight = int($edgeweight);
+
+      my $style = sprintf("setlinewidth(%f)", $w);
+      if ($x[1] =~ m/\(inline\)/) {
+        $style .= ",dashed";
+      }
+
+      # Use a slightly squashed function of the edge count as the weight
+      printf DOT ("N%s -> N%s [label=%s, weight=%d, style=\"%s\"];\n",
+                  $node{$x[0]},
+                  $node{$x[1]},
+                  Unparse($n),
+                  $edgeweight,
+                  $style);
+    }
+  }
+
+  print DOT ("}\n");
+  close(DOT);
+
+  if ($main::opt_web || $main::opt_svg) {
+    # Rewrite SVG to be more usable inside web browser.
+    RewriteSvg(TempName($main::next_tmpfile, "svg"));
+  }
+
+  return 1;
+}
+
+sub RewriteSvg {
+  my $svgfile = shift;
+
+  open(SVG, $svgfile) || die "open temp svg: $!";
+  my @svg = <SVG>;
+  close(SVG);
+  unlink $svgfile;
+  my $svg = join('', @svg);
+
+  # Dot's SVG output is
+  #
+  #    <svg width="___" height="___"
+  #     viewBox="___" xmlns=...>
+  #    <g id="graph0" transform="...">
+  #    ...
+  #    </g>
+  #    </svg>
+  #
+  # Change it to
+  #
+  #    <svg width="100%" height="100%"
+  #     xmlns=...>
+  #    $svg_javascript
+  #    <g id="viewport" transform="translate(0,0)">
+  #    <g id="graph0" transform="...">
+  #    ...
+  #    </g>
+  #    </g>
+  #    </svg>
+
+  # Fix width, height; drop viewBox.
+  $svg =~ s/(?s)<svg width="[^"]+" height="[^"]+"(.*?)viewBox="[^"]+"/<svg width="100%" height="100%"$1/;
+
+  # Insert script, viewport <g> above first <g>
+  my $svg_javascript = SvgJavascript();
+  my $viewport = "<g id=\"viewport\" transform=\"translate(0,0)\">\n";
+  $svg =~ s/<g id="graph\d"/$svg_javascript$viewport$&/;
+
+  # Insert final </g> above </svg>.
+  $svg =~ s/(.*)(<\/svg>)/$1<\/g>$2/;
+  $svg =~ s/<g id="graph\d"(.*?)/<g id="viewport"$1/;
+
+  if ($main::opt_svg) {
+    # --svg: write to standard output.
+    print $svg;
+  } else {
+    # Write back to temporary file.
+    open(SVG, ">$svgfile") || die "open $svgfile: $!";
+    print SVG $svg;
+    close(SVG);
+  }
+}
+
+sub SvgJavascript {
+  return <<'EOF';
+<script type="text/ecmascript"><![CDATA[
+// SVGPan
+// http://www.cyberz.org/blog/2009/12/08/svgpan-a-javascript-svg-panzoomdrag-library/
+// Local modification: if(true || ...) below to force panning, never moving.
+
+/**
+ *  SVGPan library 1.2
+ * ====================
+ *
+ * Given an unique existing element with id "viewport", including the
+ * the library into any SVG adds the following capabilities:
+ *
+ *  - Mouse panning
+ *  - Mouse zooming (using the wheel)
+ *  - Object dargging
+ *
+ * Known issues:
+ *
+ *  - Zooming (while panning) on Safari has still some issues
+ *
+ * Releases:
+ *
+ * 1.2, Sat Mar 20 08:42:50 GMT 2010, Zeng Xiaohui
+ *	Fixed a bug with browser mouse handler interaction
+ *
+ * 1.1, Wed Feb  3 17:39:33 GMT 2010, Zeng Xiaohui
+ *	Updated the zoom code to support the mouse wheel on Safari/Chrome
+ *
+ * 1.0, Andrea Leofreddi
+ *	First release
+ *
+ * This code is licensed under the following BSD license:
+ *
+ * Copyright 2009-2010 Andrea Leofreddi <a.leofreddi@itcharm.com>. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modification, are
+ * permitted provided that the following conditions are met:
+ *
+ *    1. Redistributions of source code must retain the above copyright notice, this list of
+ *       conditions and the following disclaimer.
+ *
+ *    2. Redistributions in binary form must reproduce the above copyright notice, this list
+ *       of conditions and the following disclaimer in the documentation and/or other materials
+ *       provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY Andrea Leofreddi ``AS IS'' AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+ * FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL Andrea Leofreddi OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * The views and conclusions contained in the software and documentation are those of the
+ * authors and should not be interpreted as representing official policies, either expressed
+ * or implied, of Andrea Leofreddi.
+ */
+
+var root = document.documentElement;
+
+var state = 'none', stateTarget, stateOrigin, stateTf;
+
+setupHandlers(root);
+
+/**
+ * Register handlers
+ */
+function setupHandlers(root){
+	setAttributes(root, {
+		"onmouseup" : "add(evt)",
+		"onmousedown" : "handleMouseDown(evt)",
+		"onmousemove" : "handleMouseMove(evt)",
+		"onmouseup" : "handleMouseUp(evt)",
+		//"onmouseout" : "handleMouseUp(evt)", // Decomment this to stop the pan functionality when dragging out of the SVG element
+	});
+
+	if(navigator.userAgent.toLowerCase().indexOf('webkit') >= 0)
+		window.addEventListener('mousewheel', handleMouseWheel, false); // Chrome/Safari
+	else
+		window.addEventListener('DOMMouseScroll', handleMouseWheel, false); // Others
+
+	var g = svgDoc.getElementById("svg");
+	g.width = "100%";
+	g.height = "100%";
+}
+
+/**
+ * Instance an SVGPoint object with given event coordinates.
+ */
+function getEventPoint(evt) {
+	var p = root.createSVGPoint();
+
+	p.x = evt.clientX;
+	p.y = evt.clientY;
+
+	return p;
+}
+
+/**
+ * Sets the current transform matrix of an element.
+ */
+function setCTM(element, matrix) {
+	var s = "matrix(" + matrix.a + "," + matrix.b + "," + matrix.c + "," + matrix.d + "," + matrix.e + "," + matrix.f + ")";
+
+	element.setAttribute("transform", s);
+}
+
+/**
+ * Dumps a matrix to a string (useful for debug).
+ */
+function dumpMatrix(matrix) {
+	var s = "[ " + matrix.a + ", " + matrix.c + ", " + matrix.e + "\n  " + matrix.b + ", " + matrix.d + ", " + matrix.f + "\n  0, 0, 1 ]";
+
+	return s;
+}
+
+/**
+ * Sets attributes of an element.
+ */
+function setAttributes(element, attributes){
+	for (i in attributes)
+		element.setAttributeNS(null, i, attributes[i]);
+}
+
+/**
+ * Handle mouse move event.
+ */
+function handleMouseWheel(evt) {
+	if(evt.preventDefault)
+		evt.preventDefault();
+
+	evt.returnValue = false;
+
+	var svgDoc = evt.target.ownerDocument;
+
+	var delta;
+
+	if(evt.wheelDelta)
+		delta = evt.wheelDelta / 3600; // Chrome/Safari
+	else
+		delta = evt.detail / -90; // Mozilla
+
+	var z = 1 + delta; // Zoom factor: 0.9/1.1
+
+	var g = svgDoc.getElementById("viewport");
+
+	var p = getEventPoint(evt);
+
+	p = p.matrixTransform(g.getCTM().inverse());
+
+	// Compute new scale matrix in current mouse position
+	var k = root.createSVGMatrix().translate(p.x, p.y).scale(z).translate(-p.x, -p.y);
+
+        setCTM(g, g.getCTM().multiply(k));
+
+	stateTf = stateTf.multiply(k.inverse());
+}
+
+/**
+ * Handle mouse move event.
+ */
+function handleMouseMove(evt) {
+	if(evt.preventDefault)
+		evt.preventDefault();
+
+	evt.returnValue = false;
+
+	var svgDoc = evt.target.ownerDocument;
+
+	var g = svgDoc.getElementById("viewport");
+
+	if(state == 'pan') {
+		// Pan mode
+		var p = getEventPoint(evt).matrixTransform(stateTf);
+
+		setCTM(g, stateTf.inverse().translate(p.x - stateOrigin.x, p.y - stateOrigin.y));
+	} else if(state == 'move') {
+		// Move mode
+		var p = getEventPoint(evt).matrixTransform(g.getCTM().inverse());
+
+		setCTM(stateTarget, root.createSVGMatrix().translate(p.x - stateOrigin.x, p.y - stateOrigin.y).multiply(g.getCTM().inverse()).multiply(stateTarget.getCTM()));
+
+		stateOrigin = p;
+	}
+}
+
+/**
+ * Handle click event.
+ */
+function handleMouseDown(evt) {
+	if(evt.preventDefault)
+		evt.preventDefault();
+
+	evt.returnValue = false;
+
+	var svgDoc = evt.target.ownerDocument;
+
+	var g = svgDoc.getElementById("viewport");
+
+	if(true || evt.target.tagName == "svg") {
+		// Pan mode
+		state = 'pan';
+
+		stateTf = g.getCTM().inverse();
+
+		stateOrigin = getEventPoint(evt).matrixTransform(stateTf);
+	} else {
+		// Move mode
+		state = 'move';
+
+		stateTarget = evt.target;
+
+		stateTf = g.getCTM().inverse();
+
+		stateOrigin = getEventPoint(evt).matrixTransform(stateTf);
+	}
+}
+
+/**
+ * Handle mouse button release event.
+ */
+function handleMouseUp(evt) {
+	if(evt.preventDefault)
+		evt.preventDefault();
+
+	evt.returnValue = false;
+
+	var svgDoc = evt.target.ownerDocument;
+
+	if(state == 'pan' || state == 'move') {
+		// Quit pan mode
+		state = '';
+	}
+}
+
+]]></script>
+EOF
+}
+
+# Provides a map from fullname to shortname for cases where the
+# shortname is ambiguous.  The symlist has both the fullname and
+# shortname for all symbols, which is usually fine, but sometimes --
+# such as overloaded functions -- two different fullnames can map to
+# the same shortname.  In that case, we use the address of the
+# function to disambiguate the two.  This function fills in a map that
+# maps fullnames to modified shortnames in such cases.  If a fullname
+# is not present in the map, the 'normal' shortname provided by the
+# symlist is the appropriate one to use.
+sub FillFullnameToShortnameMap {
+  my $symbols = shift;
+  my $fullname_to_shortname_map = shift;
+  my $shortnames_seen_once = {};
+  my $shortnames_seen_more_than_once = {};
+
+  foreach my $symlist (values(%{$symbols})) {
+    # TODO(csilvers): deal with inlined symbols too.
+    my $shortname = $symlist->[0];
+    my $fullname = $symlist->[2];
+    if ($fullname !~ /<[0-9a-fA-F]+>$/) {  # fullname doesn't end in an address
+      next;       # the only collisions we care about are when addresses differ
+    }
+    if (defined($shortnames_seen_once->{$shortname}) &&
+        $shortnames_seen_once->{$shortname} ne $fullname) {
+      $shortnames_seen_more_than_once->{$shortname} = 1;
+    } else {
+      $shortnames_seen_once->{$shortname} = $fullname;
+    }
+  }
+
+  foreach my $symlist (values(%{$symbols})) {
+    my $shortname = $symlist->[0];
+    my $fullname = $symlist->[2];
+    # TODO(csilvers): take in a list of addresses we care about, and only
+    # store in the map if $symlist->[1] is in that list.  Saves space.
+    next if defined($fullname_to_shortname_map->{$fullname});
+    if (defined($shortnames_seen_more_than_once->{$shortname})) {
+      if ($fullname =~ /<0*([^>]*)>$/) {   # fullname has address at end of it
+        $fullname_to_shortname_map->{$fullname} = "$shortname\@$1";
+      }
+    }
+  }
+}
+
+# Return a small number that identifies the argument.
+# Multiple calls with the same argument will return the same number.
+# Calls with different arguments will return different numbers.
+sub ShortIdFor {
+  my $key = shift;
+  my $id = $main::uniqueid{$key};
+  if (!defined($id)) {
+    $id = keys(%main::uniqueid) + 1;
+    $main::uniqueid{$key} = $id;
+  }
+  return $id;
+}
+
+# Translate a stack of addresses into a stack of symbols
+sub TranslateStack {
+  my $symbols = shift;
+  my $fullname_to_shortname_map = shift;
+  my $k = shift;
+
+  my @addrs = split(/\n/, $k);
+  my @result = ();
+  for (my $i = 0; $i <= $#addrs; $i++) {
+    my $a = $addrs[$i];
+
+    # Skip large addresses since they sometimes show up as fake entries on RH9
+    if (length($a) > 8 && $a gt "7fffffffffffffff") {
+      next;
+    }
+
+    if ($main::opt_disasm || $main::opt_list) {
+      # We want just the address for the key
+      push(@result, $a);
+      next;
+    }
+
+    my $symlist = $symbols->{$a};
+    if (!defined($symlist)) {
+      $symlist = [$a, "", $a];
+    }
+
+    # We can have a sequence of symbols for a particular entry
+    # (more than one symbol in the case of inlining).  Callers
+    # come before callees in symlist, so walk backwards since
+    # the translated stack should contain callees before callers.
+    for (my $j = $#{$symlist}; $j >= 2; $j -= 3) {
+      my $func = $symlist->[$j-2];
+      my $fileline = $symlist->[$j-1];
+      my $fullfunc = $symlist->[$j];
+      if (defined($fullname_to_shortname_map->{$fullfunc})) {
+        $func = $fullname_to_shortname_map->{$fullfunc};
+      }
+      if ($j > 2) {
+        $func = "$func (inline)";
+      }
+
+      # Do not merge nodes corresponding to Callback::Run since that
+      # causes confusing cycles in dot display.  Instead, we synthesize
+      # a unique name for this frame per caller.
+      if ($func =~ m/Callback.*::Run$/) {
+        my $caller = ($i > 0) ? $addrs[$i-1] : 0;
+        $func = "Run#" . ShortIdFor($caller);
+      }
+
+      if ($main::opt_addresses) {
+        push(@result, "$a $func $fileline");
+      } elsif ($main::opt_lines) {
+        if ($func eq '??' && $fileline eq '??:0') {
+          push(@result, "$a");
+        } else {
+          push(@result, "$func $fileline");
+        }
+      } elsif ($main::opt_functions) {
+        if ($func eq '??') {
+          push(@result, "$a");
+        } else {
+          push(@result, $func);
+        }
+      } elsif ($main::opt_files) {
+        if ($fileline eq '??:0' || $fileline eq '') {
+          push(@result, "$a");
+        } else {
+          my $f = $fileline;
+          $f =~ s/:\d+$//;
+          push(@result, $f);
+        }
+      } else {
+        push(@result, $a);
+        last;  # Do not print inlined info
+      }
+    }
+  }
+
+  # print join(",", @addrs), " => ", join(",", @result), "\n";
+  return @result;
+}
+
+# Generate percent string for a number and a total
+sub Percent {
+  my $num = shift;
+  my $tot = shift;
+  if ($tot != 0) {
+    return sprintf("%.1f%%", $num * 100.0 / $tot);
+  } else {
+    return ($num == 0) ? "nan" : (($num > 0) ? "+inf" : "-inf");
+  }
+}
+
+# Generate pretty-printed form of number
+sub Unparse {
+  my $num = shift;
+  if ($main::profile_type eq 'heap' || $main::profile_type eq 'growth') {
+    if ($main::opt_inuse_objects || $main::opt_alloc_objects) {
+      return sprintf("%d", $num);
+    } else {
+      if ($main::opt_show_bytes) {
+        return sprintf("%d", $num);
+      } else {
+        return sprintf("%.1f", $num / 1048576.0);
+      }
+    }
+  } elsif ($main::profile_type eq 'contention' && !$main::opt_contentions) {
+    return sprintf("%.3f", $num / 1e9); # Convert nanoseconds to seconds
+  } else {
+    return sprintf("%d", $num);
+  }
+}
+
+# Alternate pretty-printed form: 0 maps to "."
+sub UnparseAlt {
+  my $num = shift;
+  if ($num == 0) {
+    return ".";
+  } else {
+    return Unparse($num);
+  }
+}
+
+# Alternate pretty-printed form: 0 maps to ""
+sub HtmlPrintNumber {
+  my $num = shift;
+  if ($num == 0) {
+    return "";
+  } else {
+    return Unparse($num);
+  }
+}
+
+# Return output units
+sub Units {
+  if ($main::profile_type eq 'heap' || $main::profile_type eq 'growth') {
+    if ($main::opt_inuse_objects || $main::opt_alloc_objects) {
+      return "objects";
+    } else {
+      if ($main::opt_show_bytes) {
+        return "B";
+      } else {
+        return "MB";
+      }
+    }
+  } elsif ($main::profile_type eq 'contention' && !$main::opt_contentions) {
+    return "seconds";
+  } else {
+    return "samples";
+  }
+}
+
+##### Profile manipulation code #####
+
+# Generate flattened profile:
+# If count is charged to stack [a,b,c,d], in generated profile,
+# it will be charged to [a]
+sub FlatProfile {
+  my $profile = shift;
+  my $result = {};
+  foreach my $k (keys(%{$profile})) {
+    my $count = $profile->{$k};
+    my @addrs = split(/\n/, $k);
+    if ($#addrs >= 0) {
+      AddEntry($result, $addrs[0], $count);
+    }
+  }
+  return $result;
+}
+
+# Generate cumulative profile:
+# If count is charged to stack [a,b,c,d], in generated profile,
+# it will be charged to [a], [b], [c], [d]
+sub CumulativeProfile {
+  my $profile = shift;
+  my $result = {};
+  foreach my $k (keys(%{$profile})) {
+    my $count = $profile->{$k};
+    my @addrs = split(/\n/, $k);
+    foreach my $a (@addrs) {
+      AddEntry($result, $a, $count);
+    }
+  }
+  return $result;
+}
+
+# If the second-youngest PC on the stack is always the same, returns
+# that pc.  Otherwise, returns undef.
+sub IsSecondPcAlwaysTheSame {
+  my $profile = shift;
+
+  my $second_pc = undef;
+  foreach my $k (keys(%{$profile})) {
+    my @addrs = split(/\n/, $k);
+    if ($#addrs < 1) {
+      return undef;
+    }
+    if (not defined $second_pc) {
+      $second_pc = $addrs[1];
+    } else {
+      if ($second_pc ne $addrs[1]) {
+        return undef;
+      }
+    }
+  }
+  return $second_pc;
+}
+
+sub ExtractSymbolNameInlineStack {
+  my $symbols = shift;
+  my $address = shift;
+
+  my @stack = ();
+
+  if (exists $symbols->{$address}) {
+    my @localinlinestack = @{$symbols->{$address}};
+    for (my $i = $#localinlinestack; $i > 0; $i-=3) {
+      my $file = $localinlinestack[$i-1];
+      my $fn = $localinlinestack[$i-0];
+
+      if ($file eq "?" || $file eq ":0") {
+        $file = "??:0";
+      }
+      if ($fn eq '??') {
+        # If we can't get the symbol name, at least use the file information.
+        $fn = $file;
+      }
+      my $suffix = "[inline]";
+      if ($i == 2) {
+        $suffix = "";
+      }
+      push (@stack, $fn.$suffix);
+    }
+  }
+  else {
+    # If we can't get a symbol name, at least fill in the address.
+    push (@stack, $address);
+  }
+
+  return @stack;
+}
+
+sub ExtractSymbolLocation {
+  my $symbols = shift;
+  my $address = shift;
+  # 'addr2line' outputs "??:0" for unknown locations; we do the
+  # same to be consistent.
+  my $location = "??:0:unknown";
+  if (exists $symbols->{$address}) {
+    my $file = $symbols->{$address}->[1];
+    if ($file eq "?") {
+      $file = "??:0"
+    }
+    $location = $file . ":" . $symbols->{$address}->[0];
+  }
+  return $location;
+}
+
+# Extracts a graph of calls.
+sub ExtractCalls {
+  my $symbols = shift;
+  my $profile = shift;
+
+  my $calls = {};
+  while( my ($stack_trace, $count) = each %$profile ) {
+    my @address = split(/\n/, $stack_trace);
+    my $destination = ExtractSymbolLocation($symbols, $address[0]);
+    AddEntry($calls, $destination, $count);
+    for (my $i = 1; $i <= $#address; $i++) {
+      my $source = ExtractSymbolLocation($symbols, $address[$i]);
+      my $call = "$source -> $destination";
+      AddEntry($calls, $call, $count);
+      $destination = $source;
+    }
+  }
+
+  return $calls;
+}
+
+sub FilterFrames {
+  my $symbols = shift;
+  my $profile = shift;
+
+  if ($main::opt_retain eq '' && $main::opt_exclude eq '') {
+    return $profile;
+  }
+
+  my $result = {};
+  foreach my $k (keys(%{$profile})) {
+    my $count = $profile->{$k};
+    my @addrs = split(/\n/, $k);
+    my @path = ();
+    foreach my $a (@addrs) {
+      my $sym;
+      if (exists($symbols->{$a})) {
+        $sym = $symbols->{$a}->[0];
+      } else {
+        $sym = $a;
+      }
+      if ($main::opt_retain ne '' && $sym !~ m/$main::opt_retain/) {
+        next;
+      }
+      if ($main::opt_exclude ne '' && $sym =~ m/$main::opt_exclude/) {
+        next;
+      }
+      push(@path, $a);
+    }
+    if (scalar(@path) > 0) {
+      my $reduced_path = join("\n", @path);
+      AddEntry($result, $reduced_path, $count);
+    }
+  }
+
+  return $result;
+}
+
+sub PrintCollapsedStacks {
+  my $symbols = shift;
+  my $profile = shift;
+
+  while (my ($stack_trace, $count) = each %$profile) {
+    my @address = split(/\n/, $stack_trace);
+    my @names = reverse ( map { ExtractSymbolNameInlineStack($symbols, $_) } @address );
+    printf("%s %d\n", join(";", @names), $count);
+  }
+}
+
+sub RemoveUninterestingFrames {
+  my $symbols = shift;
+  my $profile = shift;
+
+  # List of function names to skip
+  my %skip = ();
+  my $skip_regexp = 'NOMATCH';
+  if ($main::profile_type eq 'heap' || $main::profile_type eq 'growth') {
+    foreach my $name ('@JEMALLOC_PREFIX@calloc',
+                      'cfree',
+                      '@JEMALLOC_PREFIX@malloc',
+                      'newImpl',
+                      'void* newImpl',
+                      '@JEMALLOC_PREFIX@free',
+                      '@JEMALLOC_PREFIX@memalign',
+                      '@JEMALLOC_PREFIX@posix_memalign',
+                      '@JEMALLOC_PREFIX@aligned_alloc',
+                      'pvalloc',
+                      '@JEMALLOC_PREFIX@valloc',
+                      '@JEMALLOC_PREFIX@realloc',
+                      '@JEMALLOC_PREFIX@mallocx',
+                      '@JEMALLOC_PREFIX@rallocx',
+                      '@JEMALLOC_PREFIX@xallocx',
+                      '@JEMALLOC_PREFIX@dallocx',
+                      '@JEMALLOC_PREFIX@sdallocx',
+                      '@JEMALLOC_PREFIX@sdallocx_noflags',
+                      'tc_calloc',
+                      'tc_cfree',
+                      'tc_malloc',
+                      'tc_free',
+                      'tc_memalign',
+                      'tc_posix_memalign',
+                      'tc_pvalloc',
+                      'tc_valloc',
+                      'tc_realloc',
+                      'tc_new',
+                      'tc_delete',
+                      'tc_newarray',
+                      'tc_deletearray',
+                      'tc_new_nothrow',
+                      'tc_newarray_nothrow',
+                      'do_malloc',
+                      '::do_malloc',   # new name -- got moved to an unnamed ns
+                      '::do_malloc_or_cpp_alloc',
+                      'DoSampledAllocation',
+                      'simple_alloc::allocate',
+                      '__malloc_alloc_template::allocate',
+                      '__builtin_delete',
+                      '__builtin_new',
+                      '__builtin_vec_delete',
+                      '__builtin_vec_new',
+                      'operator new',
+                      'operator new[]',
+                      # The entry to our memory-allocation routines on OS X
+                      'malloc_zone_malloc',
+                      'malloc_zone_calloc',
+                      'malloc_zone_valloc',
+                      'malloc_zone_realloc',
+                      'malloc_zone_memalign',
+                      'malloc_zone_free',
+                      # These mark the beginning/end of our custom sections
+                      '__start_google_malloc',
+                      '__stop_google_malloc',
+                      '__start_malloc_hook',
+                      '__stop_malloc_hook') {
+      $skip{$name} = 1;
+      $skip{"_" . $name} = 1;   # Mach (OS X) adds a _ prefix to everything
+    }
+    # TODO: Remove TCMalloc once everything has been
+    # moved into the tcmalloc:: namespace and we have flushed
+    # old code out of the system.
+    $skip_regexp = "TCMalloc|^tcmalloc::";
+  } elsif ($main::profile_type eq 'contention') {
+    foreach my $vname ('base::RecordLockProfileData',
+                       'base::SubmitMutexProfileData',
+                       'base::SubmitSpinLockProfileData',
+                       'Mutex::Unlock',
+                       'Mutex::UnlockSlow',
+                       'Mutex::ReaderUnlock',
+                       'MutexLock::~MutexLock',
+                       'SpinLock::Unlock',
+                       'SpinLock::SlowUnlock',
+                       'SpinLockHolder::~SpinLockHolder') {
+      $skip{$vname} = 1;
+    }
+  } elsif ($main::profile_type eq 'cpu') {
+    # Drop signal handlers used for CPU profile collection
+    # TODO(dpeng): this should not be necessary; it's taken
+    # care of by the general 2nd-pc mechanism below.
+    foreach my $name ('ProfileData::Add',           # historical
+                      'ProfileData::prof_handler',  # historical
+                      'CpuProfiler::prof_handler',
+                      '__FRAME_END__',
+                      '__pthread_sighandler',
+                      '__restore') {
+      $skip{$name} = 1;
+    }
+  } else {
+    # Nothing skipped for unknown types
+  }
+
+  if ($main::profile_type eq 'cpu') {
+    # If all the second-youngest program counters are the same,
+    # this STRONGLY suggests that it is an artifact of measurement,
+    # i.e., stack frames pushed by the CPU profiler signal handler.
+    # Hence, we delete them.
+    # (The topmost PC is read from the signal structure, not from
+    # the stack, so it does not get involved.)
+    while (my $second_pc = IsSecondPcAlwaysTheSame($profile)) {
+      my $result = {};
+      my $func = '';
+      if (exists($symbols->{$second_pc})) {
+        $second_pc = $symbols->{$second_pc}->[0];
+      }
+      print STDERR "Removing $second_pc from all stack traces.\n";
+      foreach my $k (keys(%{$profile})) {
+        my $count = $profile->{$k};
+        my @addrs = split(/\n/, $k);
+        splice @addrs, 1, 1;
+        my $reduced_path = join("\n", @addrs);
+        AddEntry($result, $reduced_path, $count);
+      }
+      $profile = $result;
+    }
+  }
+
+  my $result = {};
+  foreach my $k (keys(%{$profile})) {
+    my $count = $profile->{$k};
+    my @addrs = split(/\n/, $k);
+    my @path = ();
+    foreach my $a (@addrs) {
+      if (exists($symbols->{$a})) {
+        my $func = $symbols->{$a}->[0];
+        if ($skip{$func} || ($func =~ m/$skip_regexp/)) {
+          # Throw away the portion of the backtrace seen so far, under the
+          # assumption that previous frames were for functions internal to the
+          # allocator.
+          @path = ();
+          next;
+        }
+      }
+      push(@path, $a);
+    }
+    my $reduced_path = join("\n", @path);
+    AddEntry($result, $reduced_path, $count);
+  }
+
+  $result = FilterFrames($symbols, $result);
+
+  return $result;
+}
+
+# Reduce profile to granularity given by user
+sub ReduceProfile {
+  my $symbols = shift;
+  my $profile = shift;
+  my $result = {};
+  my $fullname_to_shortname_map = {};
+  FillFullnameToShortnameMap($symbols, $fullname_to_shortname_map);
+  foreach my $k (keys(%{$profile})) {
+    my $count = $profile->{$k};
+    my @translated = TranslateStack($symbols, $fullname_to_shortname_map, $k);
+    my @path = ();
+    my %seen = ();
+    $seen{''} = 1;      # So that empty keys are skipped
+    foreach my $e (@translated) {
+      # To avoid double-counting due to recursion, skip a stack-trace
+      # entry if it has already been seen
+      if (!$seen{$e}) {
+        $seen{$e} = 1;
+        push(@path, $e);
+      }
+    }
+    my $reduced_path = join("\n", @path);
+    AddEntry($result, $reduced_path, $count);
+  }
+  return $result;
+}
+
+# Does the specified symbol array match the regexp?
+sub SymbolMatches {
+  my $sym = shift;
+  my $re = shift;
+  if (defined($sym)) {
+    for (my $i = 0; $i < $#{$sym}; $i += 3) {
+      if ($sym->[$i] =~ m/$re/ || $sym->[$i+1] =~ m/$re/) {
+        return 1;
+      }
+    }
+  }
+  return 0;
+}
+
+# Focus only on paths involving specified regexps
+sub FocusProfile {
+  my $symbols = shift;
+  my $profile = shift;
+  my $focus = shift;
+  my $result = {};
+  foreach my $k (keys(%{$profile})) {
+    my $count = $profile->{$k};
+    my @addrs = split(/\n/, $k);
+    foreach my $a (@addrs) {
+      # Reply if it matches either the address/shortname/fileline
+      if (($a =~ m/$focus/) || SymbolMatches($symbols->{$a}, $focus)) {
+        AddEntry($result, $k, $count);
+        last;
+      }
+    }
+  }
+  return $result;
+}
+
+# Focus only on paths not involving specified regexps
+sub IgnoreProfile {
+  my $symbols = shift;
+  my $profile = shift;
+  my $ignore = shift;
+  my $result = {};
+  foreach my $k (keys(%{$profile})) {
+    my $count = $profile->{$k};
+    my @addrs = split(/\n/, $k);
+    my $matched = 0;
+    foreach my $a (@addrs) {
+      # Reply if it matches either the address/shortname/fileline
+      if (($a =~ m/$ignore/) || SymbolMatches($symbols->{$a}, $ignore)) {
+        $matched = 1;
+        last;
+      }
+    }
+    if (!$matched) {
+      AddEntry($result, $k, $count);
+    }
+  }
+  return $result;
+}
+
+# Get total count in profile
+sub TotalProfile {
+  my $profile = shift;
+  my $result = 0;
+  foreach my $k (keys(%{$profile})) {
+    $result += $profile->{$k};
+  }
+  return $result;
+}
+
+# Add A to B
+sub AddProfile {
+  my $A = shift;
+  my $B = shift;
+
+  my $R = {};
+  # add all keys in A
+  foreach my $k (keys(%{$A})) {
+    my $v = $A->{$k};
+    AddEntry($R, $k, $v);
+  }
+  # add all keys in B
+  foreach my $k (keys(%{$B})) {
+    my $v = $B->{$k};
+    AddEntry($R, $k, $v);
+  }
+  return $R;
+}
+
+# Merges symbol maps
+sub MergeSymbols {
+  my $A = shift;
+  my $B = shift;
+
+  my $R = {};
+  foreach my $k (keys(%{$A})) {
+    $R->{$k} = $A->{$k};
+  }
+  if (defined($B)) {
+    foreach my $k (keys(%{$B})) {
+      $R->{$k} = $B->{$k};
+    }
+  }
+  return $R;
+}
+
+
+# Add A to B
+sub AddPcs {
+  my $A = shift;
+  my $B = shift;
+
+  my $R = {};
+  # add all keys in A
+  foreach my $k (keys(%{$A})) {
+    $R->{$k} = 1
+  }
+  # add all keys in B
+  foreach my $k (keys(%{$B})) {
+    $R->{$k} = 1
+  }
+  return $R;
+}
+
+# Subtract B from A
+sub SubtractProfile {
+  my $A = shift;
+  my $B = shift;
+
+  my $R = {};
+  foreach my $k (keys(%{$A})) {
+    my $v = $A->{$k} - GetEntry($B, $k);
+    if ($v < 0 && $main::opt_drop_negative) {
+      $v = 0;
+    }
+    AddEntry($R, $k, $v);
+  }
+  if (!$main::opt_drop_negative) {
+    # Take care of when subtracted profile has more entries
+    foreach my $k (keys(%{$B})) {
+      if (!exists($A->{$k})) {
+        AddEntry($R, $k, 0 - $B->{$k});
+      }
+    }
+  }
+  return $R;
+}
+
+# Get entry from profile; zero if not present
+sub GetEntry {
+  my $profile = shift;
+  my $k = shift;
+  if (exists($profile->{$k})) {
+    return $profile->{$k};
+  } else {
+    return 0;
+  }
+}
+
+# Add entry to specified profile
+sub AddEntry {
+  my $profile = shift;
+  my $k = shift;
+  my $n = shift;
+  if (!exists($profile->{$k})) {
+    $profile->{$k} = 0;
+  }
+  $profile->{$k} += $n;
+}
+
+# Add a stack of entries to specified profile, and add them to the $pcs
+# list.
+sub AddEntries {
+  my $profile = shift;
+  my $pcs = shift;
+  my $stack = shift;
+  my $count = shift;
+  my @k = ();
+
+  foreach my $e (split(/\s+/, $stack)) {
+    my $pc = HexExtend($e);
+    $pcs->{$pc} = 1;
+    push @k, $pc;
+  }
+  AddEntry($profile, (join "\n", @k), $count);
+}
+
+##### Code to profile a server dynamically #####
+
+sub CheckSymbolPage {
+  my $url = SymbolPageURL();
+  my $command = ShellEscape(@URL_FETCHER, $url);
+  open(SYMBOL, "$command |") or error($command);
+  my $line = <SYMBOL>;
+  $line =~ s/\r//g;         # turn windows-looking lines into unix-looking lines
+  close(SYMBOL);
+  unless (defined($line)) {
+    error("$url doesn't exist\n");
+  }
+
+  if ($line =~ /^num_symbols:\s+(\d+)$/) {
+    if ($1 == 0) {
+      error("Stripped binary. No symbols available.\n");
+    }
+  } else {
+    error("Failed to get the number of symbols from $url\n");
+  }
+}
+
+sub IsProfileURL {
+  my $profile_name = shift;
+  if (-f $profile_name) {
+    printf STDERR "Using local file $profile_name.\n";
+    return 0;
+  }
+  return 1;
+}
+
+sub ParseProfileURL {
+  my $profile_name = shift;
+
+  if (!defined($profile_name) || $profile_name eq "") {
+    return ();
+  }
+
+  # Split profile URL - matches all non-empty strings, so no test.
+  $profile_name =~ m,^(https?://)?([^/]+)(.*?)(/|$PROFILES)?$,;
+
+  my $proto = $1 || "http://";
+  my $hostport = $2;
+  my $prefix = $3;
+  my $profile = $4 || "/";
+
+  my $host = $hostport;
+  $host =~ s/:.*//;
+
+  my $baseurl = "$proto$hostport$prefix";
+  return ($host, $baseurl, $profile);
+}
+
+# We fetch symbols from the first profile argument.
+sub SymbolPageURL {
+  my ($host, $baseURL, $path) = ParseProfileURL($main::pfile_args[0]);
+  return "$baseURL$SYMBOL_PAGE";
+}
+
+sub FetchProgramName() {
+  my ($host, $baseURL, $path) = ParseProfileURL($main::pfile_args[0]);
+  my $url = "$baseURL$PROGRAM_NAME_PAGE";
+  my $command_line = ShellEscape(@URL_FETCHER, $url);
+  open(CMDLINE, "$command_line |") or error($command_line);
+  my $cmdline = <CMDLINE>;
+  $cmdline =~ s/\r//g;   # turn windows-looking lines into unix-looking lines
+  close(CMDLINE);
+  error("Failed to get program name from $url\n") unless defined($cmdline);
+  $cmdline =~ s/\x00.+//;  # Remove argv[1] and latters.
+  $cmdline =~ s!\n!!g;  # Remove LFs.
+  return $cmdline;
+}
+
+# Gee, curl's -L (--location) option isn't reliable at least
+# with its 7.12.3 version.  Curl will forget to post data if
+# there is a redirection.  This function is a workaround for
+# curl.  Redirection happens on borg hosts.
+sub ResolveRedirectionForCurl {
+  my $url = shift;
+  my $command_line = ShellEscape(@URL_FETCHER, "--head", $url);
+  open(CMDLINE, "$command_line |") or error($command_line);
+  while (<CMDLINE>) {
+    s/\r//g;         # turn windows-looking lines into unix-looking lines
+    if (/^Location: (.*)/) {
+      $url = $1;
+    }
+  }
+  close(CMDLINE);
+  return $url;
+}
+
+# Add a timeout flat to URL_FETCHER.  Returns a new list.
+sub AddFetchTimeout {
+  my $timeout = shift;
+  my @fetcher = @_;
+  if (defined($timeout)) {
+    if (join(" ", @fetcher) =~ m/\bcurl -s/) {
+      push(@fetcher, "--max-time", sprintf("%d", $timeout));
+    } elsif (join(" ", @fetcher) =~ m/\brpcget\b/) {
+      push(@fetcher, sprintf("--deadline=%d", $timeout));
+    }
+  }
+  return @fetcher;
+}
+
+# Reads a symbol map from the file handle name given as $1, returning
+# the resulting symbol map.  Also processes variables relating to symbols.
+# Currently, the only variable processed is 'binary=<value>' which updates
+# $main::prog to have the correct program name.
+sub ReadSymbols {
+  my $in = shift;
+  my $map = {};
+  while (<$in>) {
+    s/\r//g;         # turn windows-looking lines into unix-looking lines
+    # Removes all the leading zeroes from the symbols, see comment below.
+    if (m/^0x0*([0-9a-f]+)\s+(.+)/) {
+      $map->{$1} = $2;
+    } elsif (m/^---/) {
+      last;
+    } elsif (m/^([a-z][^=]*)=(.*)$/ ) {
+      my ($variable, $value) = ($1, $2);
+      for ($variable, $value) {
+        s/^\s+//;
+        s/\s+$//;
+      }
+      if ($variable eq "binary") {
+        if ($main::prog ne $UNKNOWN_BINARY && $main::prog ne $value) {
+          printf STDERR ("Warning: Mismatched binary name '%s', using '%s'.\n",
+                         $main::prog, $value);
+        }
+        $main::prog = $value;
+      } else {
+        printf STDERR ("Ignoring unknown variable in symbols list: " .
+            "'%s' = '%s'\n", $variable, $value);
+      }
+    }
+  }
+  return $map;
+}
+
+sub URLEncode {
+  my $str = shift;
+  $str =~ s/([^A-Za-z0-9\-_.!~*'()])/ sprintf "%%%02x", ord $1 /eg;
+  return $str;
+}
+
+sub AppendSymbolFilterParams {
+  my $url = shift;
+  my @params = ();
+  if ($main::opt_retain ne '') {
+    push(@params, sprintf("retain=%s", URLEncode($main::opt_retain)));
+  }
+  if ($main::opt_exclude ne '') {
+    push(@params, sprintf("exclude=%s", URLEncode($main::opt_exclude)));
+  }
+  if (scalar @params > 0) {
+    $url = sprintf("%s?%s", $url, join("&", @params));
+  }
+  return $url;
+}
+
+# Fetches and processes symbols to prepare them for use in the profile output
+# code.  If the optional 'symbol_map' arg is not given, fetches symbols from
+# $SYMBOL_PAGE for all PC values found in profile.  Otherwise, the raw symbols
+# are assumed to have already been fetched into 'symbol_map' and are simply
+# extracted and processed.
+sub FetchSymbols {
+  my $pcset = shift;
+  my $symbol_map = shift;
+
+  my %seen = ();
+  my @pcs = grep { !$seen{$_}++ } keys(%$pcset);  # uniq
+
+  if (!defined($symbol_map)) {
+    my $post_data = join("+", sort((map {"0x" . "$_"} @pcs)));
+
+    open(POSTFILE, ">$main::tmpfile_sym");
+    print POSTFILE $post_data;
+    close(POSTFILE);
+
+    my $url = SymbolPageURL();
+
+    my $command_line;
+    if (join(" ", @URL_FETCHER) =~ m/\bcurl -s/) {
+      $url = ResolveRedirectionForCurl($url);
+      $url = AppendSymbolFilterParams($url);
+      $command_line = ShellEscape(@URL_FETCHER, "-d", "\@$main::tmpfile_sym",
+                                  $url);
+    } else {
+      $url = AppendSymbolFilterParams($url);
+      $command_line = (ShellEscape(@URL_FETCHER, "--post", $url)
+                       . " < " . ShellEscape($main::tmpfile_sym));
+    }
+    # We use c++filt in case $SYMBOL_PAGE gives us mangled symbols.
+    my $escaped_cppfilt = ShellEscape($obj_tool_map{"c++filt"});
+    open(SYMBOL, "$command_line | $escaped_cppfilt |") or error($command_line);
+    $symbol_map = ReadSymbols(*SYMBOL{IO});
+    close(SYMBOL);
+  }
+
+  my $symbols = {};
+  foreach my $pc (@pcs) {
+    my $fullname;
+    # For 64 bits binaries, symbols are extracted with 8 leading zeroes.
+    # Then /symbol reads the long symbols in as uint64, and outputs
+    # the result with a "0x%08llx" format which get rid of the zeroes.
+    # By removing all the leading zeroes in both $pc and the symbols from
+    # /symbol, the symbols match and are retrievable from the map.
+    my $shortpc = $pc;
+    $shortpc =~ s/^0*//;
+    # Each line may have a list of names, which includes the function
+    # and also other functions it has inlined.  They are separated (in
+    # PrintSymbolizedProfile), by --, which is illegal in function names.
+    my $fullnames;
+    if (defined($symbol_map->{$shortpc})) {
+      $fullnames = $symbol_map->{$shortpc};
+    } else {
+      $fullnames = "0x" . $pc;  # Just use addresses
+    }
+    my $sym = [];
+    $symbols->{$pc} = $sym;
+    foreach my $fullname (split("--", $fullnames)) {
+      my $name = ShortFunctionName($fullname);
+      push(@{$sym}, $name, "?", $fullname);
+    }
+  }
+  return $symbols;
+}
+
+sub BaseName {
+  my $file_name = shift;
+  $file_name =~ s!^.*/!!;  # Remove directory name
+  return $file_name;
+}
+
+sub MakeProfileBaseName {
+  my ($binary_name, $profile_name) = @_;
+  my ($host, $baseURL, $path) = ParseProfileURL($profile_name);
+  my $binary_shortname = BaseName($binary_name);
+  return sprintf("%s.%s.%s",
+                 $binary_shortname, $main::op_time, $host);
+}
+
+sub FetchDynamicProfile {
+  my $binary_name = shift;
+  my $profile_name = shift;
+  my $fetch_name_only = shift;
+  my $encourage_patience = shift;
+
+  if (!IsProfileURL($profile_name)) {
+    return $profile_name;
+  } else {
+    my ($host, $baseURL, $path) = ParseProfileURL($profile_name);
+    if ($path eq "" || $path eq "/") {
+      # Missing type specifier defaults to cpu-profile
+      $path = $PROFILE_PAGE;
+    }
+
+    my $profile_file = MakeProfileBaseName($binary_name, $profile_name);
+
+    my $url = "$baseURL$path";
+    my $fetch_timeout = undef;
+    if ($path =~ m/$PROFILE_PAGE|$PMUPROFILE_PAGE/) {
+      if ($path =~ m/[?]/) {
+        $url .= "&";
+      } else {
+        $url .= "?";
+      }
+      $url .= sprintf("seconds=%d", $main::opt_seconds);
+      $fetch_timeout = $main::opt_seconds * 1.01 + 60;
+      # Set $profile_type for consumption by PrintSymbolizedProfile.
+      $main::profile_type = 'cpu';
+    } else {
+      # For non-CPU profiles, we add a type-extension to
+      # the target profile file name.
+      my $suffix = $path;
+      $suffix =~ s,/,.,g;
+      $profile_file .= $suffix;
+      # Set $profile_type for consumption by PrintSymbolizedProfile.
+      if ($path =~ m/$HEAP_PAGE/) {
+        $main::profile_type = 'heap';
+      } elsif ($path =~ m/$GROWTH_PAGE/) {
+        $main::profile_type = 'growth';
+      } elsif ($path =~ m/$CONTENTION_PAGE/) {
+        $main::profile_type = 'contention';
+      }
+    }
+
+    my $profile_dir = $ENV{"JEPROF_TMPDIR"} || ($ENV{HOME} . "/jeprof");
+    if (! -d $profile_dir) {
+      mkdir($profile_dir)
+          || die("Unable to create profile directory $profile_dir: $!\n");
+    }
+    my $tmp_profile = "$profile_dir/.tmp.$profile_file";
+    my $real_profile = "$profile_dir/$profile_file";
+
+    if ($fetch_name_only > 0) {
+      return $real_profile;
+    }
+
+    my @fetcher = AddFetchTimeout($fetch_timeout, @URL_FETCHER);
+    my $cmd = ShellEscape(@fetcher, $url) . " > " . ShellEscape($tmp_profile);
+    if ($path =~ m/$PROFILE_PAGE|$PMUPROFILE_PAGE|$CENSUSPROFILE_PAGE/){
+      print STDERR "Gathering CPU profile from $url for $main::opt_seconds seconds to\n  ${real_profile}\n";
+      if ($encourage_patience) {
+        print STDERR "Be patient...\n";
+      }
+    } else {
+      print STDERR "Fetching $path profile from $url to\n  ${real_profile}\n";
+    }
+
+    (system($cmd) == 0) || error("Failed to get profile: $cmd: $!\n");
+    (system("mv", $tmp_profile, $real_profile) == 0) || error("Unable to rename profile\n");
+    print STDERR "Wrote profile to $real_profile\n";
+    $main::collected_profile = $real_profile;
+    return $main::collected_profile;
+  }
+}
+
+# Collect profiles in parallel
+sub FetchDynamicProfiles {
+  my $items = scalar(@main::pfile_args);
+  my $levels = log($items) / log(2);
+
+  if ($items == 1) {
+    $main::profile_files[0] = FetchDynamicProfile($main::prog, $main::pfile_args[0], 0, 1);
+  } else {
+    # math rounding issues
+    if ((2 ** $levels) < $items) {
+     $levels++;
+    }
+    my $count = scalar(@main::pfile_args);
+    for (my $i = 0; $i < $count; $i++) {
+      $main::profile_files[$i] = FetchDynamicProfile($main::prog, $main::pfile_args[$i], 1, 0);
+    }
+    print STDERR "Fetching $count profiles, Be patient...\n";
+    FetchDynamicProfilesRecurse($levels, 0, 0);
+    $main::collected_profile = join(" \\\n    ", @main::profile_files);
+  }
+}
+
+# Recursively fork a process to get enough processes
+# collecting profiles
+sub FetchDynamicProfilesRecurse {
+  my $maxlevel = shift;
+  my $level = shift;
+  my $position = shift;
+
+  if (my $pid = fork()) {
+    $position = 0 | ($position << 1);
+    TryCollectProfile($maxlevel, $level, $position);
+    wait;
+  } else {
+    $position = 1 | ($position << 1);
+    TryCollectProfile($maxlevel, $level, $position);
+    cleanup();
+    exit(0);
+  }
+}
+
+# Collect a single profile
+sub TryCollectProfile {
+  my $maxlevel = shift;
+  my $level = shift;
+  my $position = shift;
+
+  if ($level >= ($maxlevel - 1)) {
+    if ($position < scalar(@main::pfile_args)) {
+      FetchDynamicProfile($main::prog, $main::pfile_args[$position], 0, 0);
+    }
+  } else {
+    FetchDynamicProfilesRecurse($maxlevel, $level+1, $position);
+  }
+}
+
+##### Parsing code #####
+
+# Provide a small streaming-read module to handle very large
+# cpu-profile files.  Stream in chunks along a sliding window.
+# Provides an interface to get one 'slot', correctly handling
+# endian-ness differences.  A slot is one 32-bit or 64-bit word
+# (depending on the input profile).  We tell endianness and bit-size
+# for the profile by looking at the first 8 bytes: in cpu profiles,
+# the second slot is always 3 (we'll accept anything that's not 0).
+BEGIN {
+  package CpuProfileStream;
+
+  sub new {
+    my ($class, $file, $fname) = @_;
+    my $self = { file        => $file,
+                 base        => 0,
+                 stride      => 512 * 1024,   # must be a multiple of bitsize/8
+                 slots       => [],
+                 unpack_code => "",           # N for big-endian, V for little
+                 perl_is_64bit => 1,          # matters if profile is 64-bit
+    };
+    bless $self, $class;
+    # Let unittests adjust the stride
+    if ($main::opt_test_stride > 0) {
+      $self->{stride} = $main::opt_test_stride;
+    }
+    # Read the first two slots to figure out bitsize and endianness.
+    my $slots = $self->{slots};
+    my $str;
+    read($self->{file}, $str, 8);
+    # Set the global $address_length based on what we see here.
+    # 8 is 32-bit (8 hexadecimal chars); 16 is 64-bit (16 hexadecimal chars).
+    $address_length = ($str eq (chr(0)x8)) ? 16 : 8;
+    if ($address_length == 8) {
+      if (substr($str, 6, 2) eq chr(0)x2) {
+        $self->{unpack_code} = 'V';  # Little-endian.
+      } elsif (substr($str, 4, 2) eq chr(0)x2) {
+        $self->{unpack_code} = 'N';  # Big-endian
+      } else {
+        ::error("$fname: header size >= 2**16\n");
+      }
+      @$slots = unpack($self->{unpack_code} . "*", $str);
+    } else {
+      # If we're a 64-bit profile, check if we're a 64-bit-capable
+      # perl.  Otherwise, each slot will be represented as a float
+      # instead of an int64, losing precision and making all the
+      # 64-bit addresses wrong.  We won't complain yet, but will
+      # later if we ever see a value that doesn't fit in 32 bits.
+      my $has_q = 0;
+      eval { $has_q = pack("Q", "1") ? 1 : 1; };
+      if (!$has_q) {
+        $self->{perl_is_64bit} = 0;
+      }
+      read($self->{file}, $str, 8);
+      if (substr($str, 4, 4) eq chr(0)x4) {
+        # We'd love to use 'Q', but it's a) not universal, b) not endian-proof.
+        $self->{unpack_code} = 'V';  # Little-endian.
+      } elsif (substr($str, 0, 4) eq chr(0)x4) {
+        $self->{unpack_code} = 'N';  # Big-endian
+      } else {
+        ::error("$fname: header size >= 2**32\n");
+      }
+      my @pair = unpack($self->{unpack_code} . "*", $str);
+      # Since we know one of the pair is 0, it's fine to just add them.
+      @$slots = (0, $pair[0] + $pair[1]);
+    }
+    return $self;
+  }
+
+  # Load more data when we access slots->get(X) which is not yet in memory.
+  sub overflow {
+    my ($self) = @_;
+    my $slots = $self->{slots};
+    $self->{base} += $#$slots + 1;   # skip over data we're replacing
+    my $str;
+    read($self->{file}, $str, $self->{stride});
+    if ($address_length == 8) {      # the 32-bit case
+      # This is the easy case: unpack provides 32-bit unpacking primitives.
+      @$slots = unpack($self->{unpack_code} . "*", $str);
+    } else {
+      # We need to unpack 32 bits at a time and combine.
+      my @b32_values = unpack($self->{unpack_code} . "*", $str);
+      my @b64_values = ();
+      for (my $i = 0; $i < $#b32_values; $i += 2) {
+        # TODO(csilvers): if this is a 32-bit perl, the math below
+        #    could end up in a too-large int, which perl will promote
+        #    to a double, losing necessary precision.  Deal with that.
+        #    Right now, we just die.
+        my ($lo, $hi) = ($b32_values[$i], $b32_values[$i+1]);
+        if ($self->{unpack_code} eq 'N') {    # big-endian
+          ($lo, $hi) = ($hi, $lo);
+        }
+        my $value = $lo + $hi * (2**32);
+        if (!$self->{perl_is_64bit} &&   # check value is exactly represented
+            (($value % (2**32)) != $lo || int($value / (2**32)) != $hi)) {
+          ::error("Need a 64-bit perl to process this 64-bit profile.\n");
+        }
+        push(@b64_values, $value);
+      }
+      @$slots = @b64_values;
+    }
+  }
+
+  # Access the i-th long in the file (logically), or -1 at EOF.
+  sub get {
+    my ($self, $idx) = @_;
+    my $slots = $self->{slots};
+    while ($#$slots >= 0) {
+      if ($idx < $self->{base}) {
+        # The only time we expect a reference to $slots[$i - something]
+        # after referencing $slots[$i] is reading the very first header.
+        # Since $stride > |header|, that shouldn't cause any lookback
+        # errors.  And everything after the header is sequential.
+        print STDERR "Unexpected look-back reading CPU profile";
+        return -1;   # shrug, don't know what better to return
+      } elsif ($idx > $self->{base} + $#$slots) {
+        $self->overflow();
+      } else {
+        return $slots->[$idx - $self->{base}];
+      }
+    }
+    # If we get here, $slots is [], which means we've reached EOF
+    return -1;  # unique since slots is supposed to hold unsigned numbers
+  }
+}
+
+# Reads the top, 'header' section of a profile, and returns the last
+# line of the header, commonly called a 'header line'.  The header
+# section of a profile consists of zero or more 'command' lines that
+# are instructions to jeprof, which jeprof executes when reading the
+# header.  All 'command' lines start with a %.  After the command
+# lines is the 'header line', which is a profile-specific line that
+# indicates what type of profile it is, and perhaps other global
+# information about the profile.  For instance, here's a header line
+# for a heap profile:
+#   heap profile:     53:    38236 [  5525:  1284029] @ heapprofile
+# For historical reasons, the CPU profile does not contain a text-
+# readable header line.  If the profile looks like a CPU profile,
+# this function returns "".  If no header line could be found, this
+# function returns undef.
+#
+# The following commands are recognized:
+#   %warn -- emit the rest of this line to stderr, prefixed by 'WARNING:'
+#
+# The input file should be in binmode.
+sub ReadProfileHeader {
+  local *PROFILE = shift;
+  my $firstchar = "";
+  my $line = "";
+  read(PROFILE, $firstchar, 1);
+  seek(PROFILE, -1, 1);                    # unread the firstchar
+  if ($firstchar !~ /[[:print:]]/) {       # is not a text character
+    return "";
+  }
+  while (defined($line = <PROFILE>)) {
+    $line =~ s/\r//g;   # turn windows-looking lines into unix-looking lines
+    if ($line =~ /^%warn\s+(.*)/) {        # 'warn' command
+      # Note this matches both '%warn blah\n' and '%warn\n'.
+      print STDERR "WARNING: $1\n";        # print the rest of the line
+    } elsif ($line =~ /^%/) {
+      print STDERR "Ignoring unknown command from profile header: $line";
+    } else {
+      # End of commands, must be the header line.
+      return $line;
+    }
+  }
+  return undef;     # got to EOF without seeing a header line
+}
+
+sub IsSymbolizedProfileFile {
+  my $file_name = shift;
+  if (!(-e $file_name) || !(-r $file_name)) {
+    return 0;
+  }
+  # Check if the file contains a symbol-section marker.
+  open(TFILE, "<$file_name");
+  binmode TFILE;
+  my $firstline = ReadProfileHeader(*TFILE);
+  close(TFILE);
+  if (!$firstline) {
+    return 0;
+  }
+  $SYMBOL_PAGE =~ m,[^/]+$,;    # matches everything after the last slash
+  my $symbol_marker = $&;
+  return $firstline =~ /^--- *$symbol_marker/;
+}
+
+# Parse profile generated by common/profiler.cc and return a reference
+# to a map:
+#      $result->{version}     Version number of profile file
+#      $result->{period}      Sampling period (in microseconds)
+#      $result->{profile}     Profile object
+#      $result->{threads}     Map of thread IDs to profile objects
+#      $result->{map}         Memory map info from profile
+#      $result->{pcs}         Hash of all PC values seen, key is hex address
+sub ReadProfile {
+  my $prog = shift;
+  my $fname = shift;
+  my $result;            # return value
+
+  $CONTENTION_PAGE =~ m,[^/]+$,;    # matches everything after the last slash
+  my $contention_marker = $&;
+  $GROWTH_PAGE  =~ m,[^/]+$,;    # matches everything after the last slash
+  my $growth_marker = $&;
+  $SYMBOL_PAGE =~ m,[^/]+$,;    # matches everything after the last slash
+  my $symbol_marker = $&;
+  $PROFILE_PAGE =~ m,[^/]+$,;    # matches everything after the last slash
+  my $profile_marker = $&;
+  $HEAP_PAGE =~ m,[^/]+$,;    # matches everything after the last slash
+  my $heap_marker = $&;
+
+  # Look at first line to see if it is a heap or a CPU profile.
+  # CPU profile may start with no header at all, and just binary data
+  # (starting with \0\0\0\0) -- in that case, don't try to read the
+  # whole firstline, since it may be gigabytes(!) of data.
+  open(PROFILE, "<$fname") || error("$fname: $!\n");
+  binmode PROFILE;      # New perls do UTF-8 processing
+  my $header = ReadProfileHeader(*PROFILE);
+  if (!defined($header)) {   # means "at EOF"
+    error("Profile is empty.\n");
+  }
+
+  my $symbols;
+  if ($header =~ m/^--- *$symbol_marker/o) {
+    # Verify that the user asked for a symbolized profile
+    if (!$main::use_symbolized_profile) {
+      # we have both a binary and symbolized profiles, abort
+      error("FATAL ERROR: Symbolized profile\n   $fname\ncannot be used with " .
+            "a binary arg. Try again without passing\n   $prog\n");
+    }
+    # Read the symbol section of the symbolized profile file.
+    $symbols = ReadSymbols(*PROFILE{IO});
+    # Read the next line to get the header for the remaining profile.
+    $header = ReadProfileHeader(*PROFILE) || "";
+  }
+
+  if ($header =~ m/^--- *($heap_marker|$growth_marker)/o) {
+    # Skip "--- ..." line for profile types that have their own headers.
+    $header = ReadProfileHeader(*PROFILE) || "";
+  }
+
+  $main::profile_type = '';
+
+  if ($header =~ m/^heap profile:.*$growth_marker/o) {
+    $main::profile_type = 'growth';
+    $result =  ReadHeapProfile($prog, *PROFILE, $header);
+  } elsif ($header =~ m/^heap profile:/) {
+    $main::profile_type = 'heap';
+    $result =  ReadHeapProfile($prog, *PROFILE, $header);
+  } elsif ($header =~ m/^heap/) {
+    $main::profile_type = 'heap';
+    $result = ReadThreadedHeapProfile($prog, $fname, $header);
+  } elsif ($header =~ m/^--- *$contention_marker/o) {
+    $main::profile_type = 'contention';
+    $result = ReadSynchProfile($prog, *PROFILE);
+  } elsif ($header =~ m/^--- *Stacks:/) {
+    print STDERR
+      "Old format contention profile: mistakenly reports " .
+      "condition variable signals as lock contentions.\n";
+    $main::profile_type = 'contention';
+    $result = ReadSynchProfile($prog, *PROFILE);
+  } elsif ($header =~ m/^--- *$profile_marker/) {
+    # the binary cpu profile data starts immediately after this line
+    $main::profile_type = 'cpu';
+    $result = ReadCPUProfile($prog, $fname, *PROFILE);
+  } else {
+    if (defined($symbols)) {
+      # a symbolized profile contains a format we don't recognize, bail out
+      error("$fname: Cannot recognize profile section after symbols.\n");
+    }
+    # no ascii header present -- must be a CPU profile
+    $main::profile_type = 'cpu';
+    $result = ReadCPUProfile($prog, $fname, *PROFILE);
+  }
+
+  close(PROFILE);
+
+  # if we got symbols along with the profile, return those as well
+  if (defined($symbols)) {
+    $result->{symbols} = $symbols;
+  }
+
+  return $result;
+}
+
+# Subtract one from caller pc so we map back to call instr.
+# However, don't do this if we're reading a symbolized profile
+# file, in which case the subtract-one was done when the file
+# was written.
+#
+# We apply the same logic to all readers, though ReadCPUProfile uses an
+# independent implementation.
+sub FixCallerAddresses {
+  my $stack = shift;
+  # --raw/http: Always subtract one from pc's, because PrintSymbolizedProfile()
+  # dumps unadjusted profiles.
+  {
+    $stack =~ /(\s)/;
+    my $delimiter = $1;
+    my @addrs = split(' ', $stack);
+    my @fixedaddrs;
+    $#fixedaddrs = $#addrs;
+    if ($#addrs >= 0) {
+      $fixedaddrs[0] = $addrs[0];
+    }
+    for (my $i = 1; $i <= $#addrs; $i++) {
+      $fixedaddrs[$i] = AddressSub($addrs[$i], "0x1");
+    }
+    return join $delimiter, @fixedaddrs;
+  }
+}
+
+# CPU profile reader
+sub ReadCPUProfile {
+  my $prog = shift;
+  my $fname = shift;       # just used for logging
+  local *PROFILE = shift;
+  my $version;
+  my $period;
+  my $i;
+  my $profile = {};
+  my $pcs = {};
+
+  # Parse string into array of slots.
+  my $slots = CpuProfileStream->new(*PROFILE, $fname);
+
+  # Read header.  The current header version is a 5-element structure
+  # containing:
+  #   0: header count (always 0)
+  #   1: header "words" (after this one: 3)
+  #   2: format version (0)
+  #   3: sampling period (usec)
+  #   4: unused padding (always 0)
+  if ($slots->get(0) != 0 ) {
+    error("$fname: not a profile file, or old format profile file\n");
+  }
+  $i = 2 + $slots->get(1);
+  $version = $slots->get(2);
+  $period = $slots->get(3);
+  # Do some sanity checking on these header values.
+  if ($version > (2**32) || $period > (2**32) || $i > (2**32) || $i < 5) {
+    error("$fname: not a profile file, or corrupted profile file\n");
+  }
+
+  # Parse profile
+  while ($slots->get($i) != -1) {
+    my $n = $slots->get($i++);
+    my $d = $slots->get($i++);
+    if ($d > (2**16)) {  # TODO(csilvers): what's a reasonable max-stack-depth?
+      my $addr = sprintf("0%o", $i * ($address_length == 8 ? 4 : 8));
+      print STDERR "At index $i (address $addr):\n";
+      error("$fname: stack trace depth >= 2**32\n");
+    }
+    if ($slots->get($i) == 0) {
+      # End of profile data marker
+      $i += $d;
+      last;
+    }
+
+    # Make key out of the stack entries
+    my @k = ();
+    for (my $j = 0; $j < $d; $j++) {
+      my $pc = $slots->get($i+$j);
+      # Subtract one from caller pc so we map back to call instr.
+      $pc--;
+      $pc = sprintf("%0*x", $address_length, $pc);
+      $pcs->{$pc} = 1;
+      push @k, $pc;
+    }
+
+    AddEntry($profile, (join "\n", @k), $n);
+    $i += $d;
+  }
+
+  # Parse map
+  my $map = '';
+  seek(PROFILE, $i * 4, 0);
+  read(PROFILE, $map, (stat PROFILE)[7]);
+
+  my $r = {};
+  $r->{version} = $version;
+  $r->{period} = $period;
+  $r->{profile} = $profile;
+  $r->{libs} = ParseLibraries($prog, $map, $pcs);
+  $r->{pcs} = $pcs;
+
+  return $r;
+}
+
+sub HeapProfileIndex {
+  my $index = 1;
+  if ($main::opt_inuse_space) {
+    $index = 1;
+  } elsif ($main::opt_inuse_objects) {
+    $index = 0;
+  } elsif ($main::opt_alloc_space) {
+    $index = 3;
+  } elsif ($main::opt_alloc_objects) {
+    $index = 2;
+  }
+  return $index;
+}
+
+sub ReadMappedLibraries {
+  my $fh = shift;
+  my $map = "";
+  # Read the /proc/self/maps data
+  while (<$fh>) {
+    s/\r//g;         # turn windows-looking lines into unix-looking lines
+    $map .= $_;
+  }
+  return $map;
+}
+
+sub ReadMemoryMap {
+  my $fh = shift;
+  my $map = "";
+  # Read /proc/self/maps data as formatted by DumpAddressMap()
+  my $buildvar = "";
+  while (<PROFILE>) {
+    s/\r//g;         # turn windows-looking lines into unix-looking lines
+    # Parse "build=<dir>" specification if supplied
+    if (m/^\s*build=(.*)\n/) {
+      $buildvar = $1;
+    }
+
+    # Expand "$build" variable if available
+    $_ =~ s/\$build\b/$buildvar/g;
+
+    $map .= $_;
+  }
+  return $map;
+}
+
+sub AdjustSamples {
+  my ($sample_adjustment, $sampling_algorithm, $n1, $s1, $n2, $s2) = @_;
+  if ($sample_adjustment) {
+    if ($sampling_algorithm == 2) {
+      # Remote-heap version 2
+      # The sampling frequency is the rate of a Poisson process.
+      # This means that the probability of sampling an allocation of
+      # size X with sampling rate Y is 1 - exp(-X/Y)
+      if ($n1 != 0) {
+        my $ratio = (($s1*1.0)/$n1)/($sample_adjustment);
+        my $scale_factor = 1/(1 - exp(-$ratio));
+        $n1 *= $scale_factor;
+        $s1 *= $scale_factor;
+      }
+      if ($n2 != 0) {
+        my $ratio = (($s2*1.0)/$n2)/($sample_adjustment);
+        my $scale_factor = 1/(1 - exp(-$ratio));
+        $n2 *= $scale_factor;
+        $s2 *= $scale_factor;
+      }
+    } else {
+      # Remote-heap version 1
+      my $ratio;
+      $ratio = (($s1*1.0)/$n1)/($sample_adjustment);
+      if ($ratio < 1) {
+        $n1 /= $ratio;
+        $s1 /= $ratio;
+      }
+      $ratio = (($s2*1.0)/$n2)/($sample_adjustment);
+      if ($ratio < 1) {
+        $n2 /= $ratio;
+        $s2 /= $ratio;
+      }
+    }
+  }
+  return ($n1, $s1, $n2, $s2);
+}
+
+sub ReadHeapProfile {
+  my $prog = shift;
+  local *PROFILE = shift;
+  my $header = shift;
+
+  my $index = HeapProfileIndex();
+
+  # Find the type of this profile.  The header line looks like:
+  #    heap profile:   1246:  8800744 [  1246:  8800744] @ <heap-url>/266053
+  # There are two pairs <count: size>, the first inuse objects/space, and the
+  # second allocated objects/space.  This is followed optionally by a profile
+  # type, and if that is present, optionally by a sampling frequency.
+  # For remote heap profiles (v1):
+  # The interpretation of the sampling frequency is that the profiler, for
+  # each sample, calculates a uniformly distributed random integer less than
+  # the given value, and records the next sample after that many bytes have
+  # been allocated.  Therefore, the expected sample interval is half of the
+  # given frequency.  By default, if not specified, the expected sample
+  # interval is 128KB.  Only remote-heap-page profiles are adjusted for
+  # sample size.
+  # For remote heap profiles (v2):
+  # The sampling frequency is the rate of a Poisson process. This means that
+  # the probability of sampling an allocation of size X with sampling rate Y
+  # is 1 - exp(-X/Y)
+  # For version 2, a typical header line might look like this:
+  # heap profile:   1922: 127792360 [  1922: 127792360] @ <heap-url>_v2/524288
+  # the trailing number (524288) is the sampling rate. (Version 1 showed
+  # double the 'rate' here)
+  my $sampling_algorithm = 0;
+  my $sample_adjustment = 0;
+  chomp($header);
+  my $type = "unknown";
+  if ($header =~ m"^heap profile:\s*(\d+):\s+(\d+)\s+\[\s*(\d+):\s+(\d+)\](\s*@\s*([^/]*)(/(\d+))?)?") {
+    if (defined($6) && ($6 ne '')) {
+      $type = $6;
+      my $sample_period = $8;
+      # $type is "heapprofile" for profiles generated by the
+      # heap-profiler, and either "heap" or "heap_v2" for profiles
+      # generated by sampling directly within tcmalloc.  It can also
+      # be "growth" for heap-growth profiles.  The first is typically
+      # found for profiles generated locally, and the others for
+      # remote profiles.
+      if (($type eq "heapprofile") || ($type !~ /heap/) ) {
+        # No need to adjust for the sampling rate with heap-profiler-derived data
+        $sampling_algorithm = 0;
+      } elsif ($type =~ /_v2/) {
+        $sampling_algorithm = 2;     # version 2 sampling
+        if (defined($sample_period) && ($sample_period ne '')) {
+          $sample_adjustment = int($sample_period);
+        }
+      } else {
+        $sampling_algorithm = 1;     # version 1 sampling
+        if (defined($sample_period) && ($sample_period ne '')) {
+          $sample_adjustment = int($sample_period)/2;
+        }
+      }
+    } else {
+      # We detect whether or not this is a remote-heap profile by checking
+      # that the total-allocated stats ($n2,$s2) are exactly the
+      # same as the in-use stats ($n1,$s1).  It is remotely conceivable
+      # that a non-remote-heap profile may pass this check, but it is hard
+      # to imagine how that could happen.
+      # In this case it's so old it's guaranteed to be remote-heap version 1.
+      my ($n1, $s1, $n2, $s2) = ($1, $2, $3, $4);
+      if (($n1 == $n2) && ($s1 == $s2)) {
+        # This is likely to be a remote-heap based sample profile
+        $sampling_algorithm = 1;
+      }
+    }
+  }
+
+  if ($sampling_algorithm > 0) {
+    # For remote-heap generated profiles, adjust the counts and sizes to
+    # account for the sample rate (we sample once every 128KB by default).
+    if ($sample_adjustment == 0) {
+      # Turn on profile adjustment.
+      $sample_adjustment = 128*1024;
+      print STDERR "Adjusting heap profiles for 1-in-128KB sampling rate\n";
+    } else {
+      printf STDERR ("Adjusting heap profiles for 1-in-%d sampling rate\n",
+                     $sample_adjustment);
+    }
+    if ($sampling_algorithm > 1) {
+      # We don't bother printing anything for the original version (version 1)
+      printf STDERR "Heap version $sampling_algorithm\n";
+    }
+  }
+
+  my $profile = {};
+  my $pcs = {};
+  my $map = "";
+
+  while (<PROFILE>) {
+    s/\r//g;         # turn windows-looking lines into unix-looking lines
+    if (/^MAPPED_LIBRARIES:/) {
+      $map .= ReadMappedLibraries(*PROFILE);
+      last;
+    }
+
+    if (/^--- Memory map:/) {
+      $map .= ReadMemoryMap(*PROFILE);
+      last;
+    }
+
+    # Read entry of the form:
+    #  <count1>: <bytes1> [<count2>: <bytes2>] @ a1 a2 a3 ... an
+    s/^\s*//;
+    s/\s*$//;
+    if (m/^\s*(\d+):\s+(\d+)\s+\[\s*(\d+):\s+(\d+)\]\s+@\s+(.*)$/) {
+      my $stack = $5;
+      my ($n1, $s1, $n2, $s2) = ($1, $2, $3, $4);
+      my @counts = AdjustSamples($sample_adjustment, $sampling_algorithm,
+                                 $n1, $s1, $n2, $s2);
+      AddEntries($profile, $pcs, FixCallerAddresses($stack), $counts[$index]);
+    }
+  }
+
+  my $r = {};
+  $r->{version} = "heap";
+  $r->{period} = 1;
+  $r->{profile} = $profile;
+  $r->{libs} = ParseLibraries($prog, $map, $pcs);
+  $r->{pcs} = $pcs;
+  return $r;
+}
+
+sub ReadThreadedHeapProfile {
+  my ($prog, $fname, $header) = @_;
+
+  my $index = HeapProfileIndex();
+  my $sampling_algorithm = 0;
+  my $sample_adjustment = 0;
+  chomp($header);
+  my $type = "unknown";
+  # Assuming a very specific type of header for now.
+  if ($header =~ m"^heap_v2/(\d+)") {
+    $type = "_v2";
+    $sampling_algorithm = 2;
+    $sample_adjustment = int($1);
+  }
+  if ($type ne "_v2" || !defined($sample_adjustment)) {
+    die "Threaded heap profiles require v2 sampling with a sample rate\n";
+  }
+
+  my $profile = {};
+  my $thread_profiles = {};
+  my $pcs = {};
+  my $map = "";
+  my $stack = "";
+
+  while (<PROFILE>) {
+    s/\r//g;
+    if (/^MAPPED_LIBRARIES:/) {
+      $map .= ReadMappedLibraries(*PROFILE);
+      last;
+    }
+
+    if (/^--- Memory map:/) {
+      $map .= ReadMemoryMap(*PROFILE);
+      last;
+    }
+
+    # Read entry of the form:
+    # @ a1 a2 ... an
+    #   t*: <count1>: <bytes1> [<count2>: <bytes2>]
+    #   t1: <count1>: <bytes1> [<count2>: <bytes2>]
+    #     ...
+    #   tn: <count1>: <bytes1> [<count2>: <bytes2>]
+    s/^\s*//;
+    s/\s*$//;
+    if (m/^@\s+(.*)$/) {
+      $stack = $1;
+    } elsif (m/^\s*(t(\*|\d+)):\s+(\d+):\s+(\d+)\s+\[\s*(\d+):\s+(\d+)\]$/) {
+      if ($stack eq "") {
+        # Still in the header, so this is just a per-thread summary.
+        next;
+      }
+      my $thread = $2;
+      my ($n1, $s1, $n2, $s2) = ($3, $4, $5, $6);
+      my @counts = AdjustSamples($sample_adjustment, $sampling_algorithm,
+                                 $n1, $s1, $n2, $s2);
+      if ($thread eq "*") {
+        AddEntries($profile, $pcs, FixCallerAddresses($stack), $counts[$index]);
+      } else {
+        if (!exists($thread_profiles->{$thread})) {
+          $thread_profiles->{$thread} = {};
+        }
+        AddEntries($thread_profiles->{$thread}, $pcs,
+                   FixCallerAddresses($stack), $counts[$index]);
+      }
+    }
+  }
+
+  my $r = {};
+  $r->{version} = "heap";
+  $r->{period} = 1;
+  $r->{profile} = $profile;
+  $r->{threads} = $thread_profiles;
+  $r->{libs} = ParseLibraries($prog, $map, $pcs);
+  $r->{pcs} = $pcs;
+  return $r;
+}
+
+sub ReadSynchProfile {
+  my $prog = shift;
+  local *PROFILE = shift;
+  my $header = shift;
+
+  my $map = '';
+  my $profile = {};
+  my $pcs = {};
+  my $sampling_period = 1;
+  my $cyclespernanosec = 2.8;   # Default assumption for old binaries
+  my $seen_clockrate = 0;
+  my $line;
+
+  my $index = 0;
+  if ($main::opt_total_delay) {
+    $index = 0;
+  } elsif ($main::opt_contentions) {
+    $index = 1;
+  } elsif ($main::opt_mean_delay) {
+    $index = 2;
+  }
+
+  while ( $line = <PROFILE> ) {
+    $line =~ s/\r//g;      # turn windows-looking lines into unix-looking lines
+    if ( $line =~ /^\s*(\d+)\s+(\d+) \@\s*(.*?)\s*$/ ) {
+      my ($cycles, $count, $stack) = ($1, $2, $3);
+
+      # Convert cycles to nanoseconds
+      $cycles /= $cyclespernanosec;
+
+      # Adjust for sampling done by application
+      $cycles *= $sampling_period;
+      $count *= $sampling_period;
+
+      my @values = ($cycles, $count, $cycles / $count);
+      AddEntries($profile, $pcs, FixCallerAddresses($stack), $values[$index]);
+
+    } elsif ( $line =~ /^(slow release).*thread \d+  \@\s*(.*?)\s*$/ ||
+              $line =~ /^\s*(\d+) \@\s*(.*?)\s*$/ ) {
+      my ($cycles, $stack) = ($1, $2);
+      if ($cycles !~ /^\d+$/) {
+        next;
+      }
+
+      # Convert cycles to nanoseconds
+      $cycles /= $cyclespernanosec;
+
+      # Adjust for sampling done by application
+      $cycles *= $sampling_period;
+
+      AddEntries($profile, $pcs, FixCallerAddresses($stack), $cycles);
+
+    } elsif ( $line =~ m/^([a-z][^=]*)=(.*)$/ ) {
+      my ($variable, $value) = ($1,$2);
+      for ($variable, $value) {
+        s/^\s+//;
+        s/\s+$//;
+      }
+      if ($variable eq "cycles/second") {
+        $cyclespernanosec = $value / 1e9;
+        $seen_clockrate = 1;
+      } elsif ($variable eq "sampling period") {
+        $sampling_period = $value;
+      } elsif ($variable eq "ms since reset") {
+        # Currently nothing is done with this value in jeprof
+        # So we just silently ignore it for now
+      } elsif ($variable eq "discarded samples") {
+        # Currently nothing is done with this value in jeprof
+        # So we just silently ignore it for now
+      } else {
+        printf STDERR ("Ignoring unnknown variable in /contention output: " .
+                       "'%s' = '%s'\n",$variable,$value);
+      }
+    } else {
+      # Memory map entry
+      $map .= $line;
+    }
+  }
+
+  if (!$seen_clockrate) {
+    printf STDERR ("No cycles/second entry in profile; Guessing %.1f GHz\n",
+                   $cyclespernanosec);
+  }
+
+  my $r = {};
+  $r->{version} = 0;
+  $r->{period} = $sampling_period;
+  $r->{profile} = $profile;
+  $r->{libs} = ParseLibraries($prog, $map, $pcs);
+  $r->{pcs} = $pcs;
+  return $r;
+}
+
+# Given a hex value in the form "0x1abcd" or "1abcd", return either
+# "0001abcd" or "000000000001abcd", depending on the current (global)
+# address length.
+sub HexExtend {
+  my $addr = shift;
+
+  $addr =~ s/^(0x)?0*//;
+  my $zeros_needed = $address_length - length($addr);
+  if ($zeros_needed < 0) {
+    printf STDERR "Warning: address $addr is longer than address length $address_length\n";
+    return $addr;
+  }
+  return ("0" x $zeros_needed) . $addr;
+}
+
+##### Symbol extraction #####
+
+# Aggressively search the lib_prefix values for the given library
+# If all else fails, just return the name of the library unmodified.
+# If the lib_prefix is "/my/path,/other/path" and $file is "/lib/dir/mylib.so"
+# it will search the following locations in this order, until it finds a file:
+#   /my/path/lib/dir/mylib.so
+#   /other/path/lib/dir/mylib.so
+#   /my/path/dir/mylib.so
+#   /other/path/dir/mylib.so
+#   /my/path/mylib.so
+#   /other/path/mylib.so
+#   /lib/dir/mylib.so              (returned as last resort)
+sub FindLibrary {
+  my $file = shift;
+  my $suffix = $file;
+
+  # Search for the library as described above
+  do {
+    foreach my $prefix (@prefix_list) {
+      my $fullpath = $prefix . $suffix;
+      if (-e $fullpath) {
+        return $fullpath;
+      }
+    }
+  } while ($suffix =~ s|^/[^/]+/|/|);
+  return $file;
+}
+
+# Return path to library with debugging symbols.
+# For libc libraries, the copy in /usr/lib/debug contains debugging symbols
+sub DebuggingLibrary {
+  my $file = shift;
+      
+  if ($file !~ m|^/|) {
+    return undef;
+  }
+      
+  # Find debug symbol file if it's named after the library's name.
+  
+  if (-f "/usr/lib/debug$file") {                 
+    if($main::opt_debug) { print STDERR "found debug info for $file in /usr/lib/debug$file\n"; }
+    return "/usr/lib/debug$file";
+  } elsif (-f "/usr/lib/debug$file.debug") {
+    if($main::opt_debug) { print STDERR "found debug info for $file in /usr/lib/debug$file.debug\n"; }
+    return "/usr/lib/debug$file.debug"; 
+  }
+
+  if(!$main::opt_debug_syms_by_id) {
+    if($main::opt_debug) { print STDERR "no debug symbols found for $file\n" };
+    return undef;
+  }
+
+  # Find debug file if it's named after the library's build ID.
+  
+  my $readelf = '';
+  if (!$main::gave_up_on_elfutils) {
+    $readelf = qx/eu-readelf -n ${file}/;
+    if ($?) {
+      print STDERR "Cannot run eu-readelf. To use --debug-syms-by-id you must be on Linux, with elfutils installed.\n";
+      $main::gave_up_on_elfutils = 1;
+      return undef;
+    }
+    my $buildID = $1 if $readelf =~ /Build ID: ([A-Fa-f0-9]+)/s;
+    if (defined $buildID && length $buildID > 0) {
+      my $symbolFile = '/usr/lib/debug/.build-id/' . substr($buildID, 0, 2) . '/' . substr($buildID, 2) . '.debug';
+      if (-e $symbolFile) {
+        if($main::opt_debug) { print STDERR "found debug symbol file $symbolFile for $file\n" };
+        return $symbolFile;
+      } else {
+        if($main::opt_debug) { print STDERR "no debug symbol file found for $file, build ID: $buildID\n" };
+        return undef;
+      }
+    }
+  }
+
+  if($main::opt_debug) { print STDERR "no debug symbols found for $file, build ID unknown\n" };
+  return undef;
+}
+
+
+# Parse text section header of a library using objdump
+sub ParseTextSectionHeaderFromObjdump {
+  my $lib = shift;
+
+  my $size = undef;
+  my $vma;
+  my $file_offset;
+  # Get objdump output from the library file to figure out how to
+  # map between mapped addresses and addresses in the library.
+  my $cmd = ShellEscape($obj_tool_map{"objdump"}, "-h", $lib);
+  open(OBJDUMP, "$cmd |") || error("$cmd: $!\n");
+  while (<OBJDUMP>) {
+    s/\r//g;         # turn windows-looking lines into unix-looking lines
+    # Idx Name          Size      VMA       LMA       File off  Algn
+    #  10 .text         00104b2c  420156f0  420156f0  000156f0  2**4
+    # For 64-bit objects, VMA and LMA will be 16 hex digits, size and file
+    # offset may still be 8.  But AddressSub below will still handle that.
+    my @x = split;
+    if (($#x >= 6) && ($x[1] eq '.text')) {
+      $size = $x[2];
+      $vma = $x[3];
+      $file_offset = $x[5];
+      last;
+    }
+  }
+  close(OBJDUMP);
+
+  if (!defined($size)) {
+    return undef;
+  }
+
+  my $r = {};
+  $r->{size} = $size;
+  $r->{vma} = $vma;
+  $r->{file_offset} = $file_offset;
+
+  return $r;
+}
+
+# Parse text section header of a library using otool (on OS X)
+sub ParseTextSectionHeaderFromOtool {
+  my $lib = shift;
+
+  my $size = undef;
+  my $vma = undef;
+  my $file_offset = undef;
+  # Get otool output from the library file to figure out how to
+  # map between mapped addresses and addresses in the library.
+  my $command = ShellEscape($obj_tool_map{"otool"}, "-l", $lib);
+  open(OTOOL, "$command |") || error("$command: $!\n");
+  my $cmd = "";
+  my $sectname = "";
+  my $segname = "";
+  foreach my $line (<OTOOL>) {
+    $line =~ s/\r//g;      # turn windows-looking lines into unix-looking lines
+    # Load command <#>
+    #       cmd LC_SEGMENT
+    # [...]
+    # Section
+    #   sectname __text
+    #    segname __TEXT
+    #       addr 0x000009f8
+    #       size 0x00018b9e
+    #     offset 2552
+    #      align 2^2 (4)
+    # We will need to strip off the leading 0x from the hex addresses,
+    # and convert the offset into hex.
+    if ($line =~ /Load command/) {
+      $cmd = "";
+      $sectname = "";
+      $segname = "";
+    } elsif ($line =~ /Section/) {
+      $sectname = "";
+      $segname = "";
+    } elsif ($line =~ /cmd (\w+)/) {
+      $cmd = $1;
+    } elsif ($line =~ /sectname (\w+)/) {
+      $sectname = $1;
+    } elsif ($line =~ /segname (\w+)/) {
+      $segname = $1;
+    } elsif (!(($cmd eq "LC_SEGMENT" || $cmd eq "LC_SEGMENT_64") &&
+               $sectname eq "__text" &&
+               $segname eq "__TEXT")) {
+      next;
+    } elsif ($line =~ /\baddr 0x([0-9a-fA-F]+)/) {
+      $vma = $1;
+    } elsif ($line =~ /\bsize 0x([0-9a-fA-F]+)/) {
+      $size = $1;
+    } elsif ($line =~ /\boffset ([0-9]+)/) {
+      $file_offset = sprintf("%016x", $1);
+    }
+    if (defined($vma) && defined($size) && defined($file_offset)) {
+      last;
+    }
+  }
+  close(OTOOL);
+
+  if (!defined($vma) || !defined($size) || !defined($file_offset)) {
+     return undef;
+  }
+
+  my $r = {};
+  $r->{size} = $size;
+  $r->{vma} = $vma;
+  $r->{file_offset} = $file_offset;
+
+  return $r;
+}
+
+sub ParseTextSectionHeader {
+  # obj_tool_map("otool") is only defined if we're in a Mach-O environment
+  if (defined($obj_tool_map{"otool"})) {
+    my $r = ParseTextSectionHeaderFromOtool(@_);
+    if (defined($r)){
+      return $r;
+    }
+  }
+  # If otool doesn't work, or we don't have it, fall back to objdump
+  return ParseTextSectionHeaderFromObjdump(@_);
+}
+
+# Split /proc/pid/maps dump into a list of libraries
+sub ParseLibraries {
+  return if $main::use_symbol_page;  # We don't need libraries info.
+  my $prog = Cwd::abs_path(shift);
+  my $map = shift;
+  my $pcs = shift;
+
+  my $result = [];
+  my $h = "[a-f0-9]+";
+  my $zero_offset = HexExtend("0");
+
+  my $buildvar = "";
+  foreach my $l (split("\n", $map)) {
+    if ($l =~ m/^\s*build=(.*)$/) {
+      $buildvar = $1;
+    }
+
+    my $start;
+    my $finish;
+    my $offset;
+    my $lib;
+    if ($l =~ /^($h)-($h)\s+..x.\s+($h)\s+\S+:\S+\s+\d+\s+(\S+\.(so|dll|dylib|bundle)((\.\d+)+\w*(\.\d+){0,3})?)$/i) {
+      # Full line from /proc/self/maps.  Example:
+      #   40000000-40015000 r-xp 00000000 03:01 12845071   /lib/ld-2.3.2.so
+      $start = HexExtend($1);
+      $finish = HexExtend($2);
+      $offset = HexExtend($3);
+      $lib = $4;
+      $lib =~ s|\\|/|g;     # turn windows-style paths into unix-style paths
+    } elsif ($l =~ /^\s*($h)-($h):\s*(\S+\.so(\.\d+)*)/) {
+      # Cooked line from DumpAddressMap.  Example:
+      #   40000000-40015000: /lib/ld-2.3.2.so
+      $start = HexExtend($1);
+      $finish = HexExtend($2);
+      $offset = $zero_offset;
+      $lib = $3;
+    } elsif (($l =~ /^($h)-($h)\s+..x.\s+($h)\s+\S+:\S+\s+\d+\s+(\S+)$/i) && ($4 eq $prog)) {
+      # PIEs and address space randomization do not play well with our
+      # default assumption that main executable is at lowest
+      # addresses. So we're detecting main executable in
+      # /proc/self/maps as well.
+      $start = HexExtend($1);
+      $finish = HexExtend($2);
+      $offset = HexExtend($3);
+      $lib = $4;
+      $lib =~ s|\\|/|g;     # turn windows-style paths into unix-style paths
+    }
+    # FreeBSD 10.0 virtual memory map /proc/curproc/map as defined in
+    # function procfs_doprocmap (sys/fs/procfs/procfs_map.c)
+    #
+    # Example:
+    # 0x800600000 0x80061a000 26 0 0xfffff800035a0000 r-x 75 33 0x1004 COW NC vnode /libexec/ld-elf.s
+    # o.1 NCH -1
+    elsif ($l =~ /^(0x$h)\s(0x$h)\s\d+\s\d+\s0x$h\sr-x\s\d+\s\d+\s0x\d+\s(COW|NCO)\s(NC|NNC)\svnode\s(\S+\.so(\.\d+)*)/) {
+      $start = HexExtend($1);
+      $finish = HexExtend($2);
+      $offset = $zero_offset;
+      $lib = FindLibrary($5);
+
+    } else {
+      next;
+    }
+
+    # Expand "$build" variable if available
+    $lib =~ s/\$build\b/$buildvar/g;
+
+    $lib = FindLibrary($lib);
+
+    # Check for pre-relocated libraries, which use pre-relocated symbol tables
+    # and thus require adjusting the offset that we'll use to translate
+    # VM addresses into symbol table addresses.
+    # Only do this if we're not going to fetch the symbol table from a
+    # debugging copy of the library.
+    if (!DebuggingLibrary($lib)) {
+      my $text = ParseTextSectionHeader($lib);
+      if (defined($text)) {
+         my $vma_offset = AddressSub($text->{vma}, $text->{file_offset});
+         $offset = AddressAdd($offset, $vma_offset);
+      }
+    }
+
+    if($main::opt_debug) { printf STDERR "$start:$finish ($offset) $lib\n"; }
+    push(@{$result}, [$lib, $start, $finish, $offset]);
+  }
+
+  # Append special entry for additional library (not relocated)
+  if ($main::opt_lib ne "") {
+    my $text = ParseTextSectionHeader($main::opt_lib);
+    if (defined($text)) {
+       my $start = $text->{vma};
+       my $finish = AddressAdd($start, $text->{size});
+
+       push(@{$result}, [$main::opt_lib, $start, $finish, $start]);
+    }
+  }
+
+  # Append special entry for the main program.  This covers
+  # 0..max_pc_value_seen, so that we assume pc values not found in one
+  # of the library ranges will be treated as coming from the main
+  # program binary.
+  my $min_pc = HexExtend("0");
+  my $max_pc = $min_pc;          # find the maximal PC value in any sample
+  foreach my $pc (keys(%{$pcs})) {
+    if (HexExtend($pc) gt $max_pc) { $max_pc = HexExtend($pc); }
+  }
+  push(@{$result}, [$prog, $min_pc, $max_pc, $zero_offset]);
+
+  return $result;
+}
+
+# Add two hex addresses of length $address_length.
+# Run jeprof --test for unit test if this is changed.
+sub AddressAdd {
+  my $addr1 = shift;
+  my $addr2 = shift;
+  my $sum;
+
+  if ($address_length == 8) {
+    # Perl doesn't cope with wraparound arithmetic, so do it explicitly:
+    $sum = (hex($addr1)+hex($addr2)) % (0x10000000 * 16);
+    return sprintf("%08x", $sum);
+
+  } else {
+    # Do the addition in 7-nibble chunks to trivialize carry handling.
+
+    if ($main::opt_debug and $main::opt_test) {
+      print STDERR "AddressAdd $addr1 + $addr2 = ";
+    }
+
+    my $a1 = substr($addr1,-7);
+    $addr1 = substr($addr1,0,-7);
+    my $a2 = substr($addr2,-7);
+    $addr2 = substr($addr2,0,-7);
+    $sum = hex($a1) + hex($a2);
+    my $c = 0;
+    if ($sum > 0xfffffff) {
+      $c = 1;
+      $sum -= 0x10000000;
+    }
+    my $r = sprintf("%07x", $sum);
+
+    $a1 = substr($addr1,-7);
+    $addr1 = substr($addr1,0,-7);
+    $a2 = substr($addr2,-7);
+    $addr2 = substr($addr2,0,-7);
+    $sum = hex($a1) + hex($a2) + $c;
+    $c = 0;
+    if ($sum > 0xfffffff) {
+      $c = 1;
+      $sum -= 0x10000000;
+    }
+    $r = sprintf("%07x", $sum) . $r;
+
+    $sum = hex($addr1) + hex($addr2) + $c;
+    if ($sum > 0xff) { $sum -= 0x100; }
+    $r = sprintf("%02x", $sum) . $r;
+
+    if ($main::opt_debug and $main::opt_test) { print STDERR "$r\n"; }
+
+    return $r;
+  }
+}
+
+
+# Subtract two hex addresses of length $address_length.
+# Run jeprof --test for unit test if this is changed.
+sub AddressSub {
+  my $addr1 = shift;
+  my $addr2 = shift;
+  my $diff;
+
+  if ($address_length == 8) {
+    # Perl doesn't cope with wraparound arithmetic, so do it explicitly:
+    $diff = (hex($addr1)-hex($addr2)) % (0x10000000 * 16);
+    return sprintf("%08x", $diff);
+
+  } else {
+    # Do the addition in 7-nibble chunks to trivialize borrow handling.
+    # if ($main::opt_debug) { print STDERR "AddressSub $addr1 - $addr2 = "; }
+
+    my $a1 = hex(substr($addr1,-7));
+    $addr1 = substr($addr1,0,-7);
+    my $a2 = hex(substr($addr2,-7));
+    $addr2 = substr($addr2,0,-7);
+    my $b = 0;
+    if ($a2 > $a1) {
+      $b = 1;
+      $a1 += 0x10000000;
+    }
+    $diff = $a1 - $a2;
+    my $r = sprintf("%07x", $diff);
+
+    $a1 = hex(substr($addr1,-7));
+    $addr1 = substr($addr1,0,-7);
+    $a2 = hex(substr($addr2,-7)) + $b;
+    $addr2 = substr($addr2,0,-7);
+    $b = 0;
+    if ($a2 > $a1) {
+      $b = 1;
+      $a1 += 0x10000000;
+    }
+    $diff = $a1 - $a2;
+    $r = sprintf("%07x", $diff) . $r;
+
+    $a1 = hex($addr1);
+    $a2 = hex($addr2) + $b;
+    if ($a2 > $a1) { $a1 += 0x100; }
+    $diff = $a1 - $a2;
+    $r = sprintf("%02x", $diff) . $r;
+
+    # if ($main::opt_debug) { print STDERR "$r\n"; }
+
+    return $r;
+  }
+}
+
+# Increment a hex addresses of length $address_length.
+# Run jeprof --test for unit test if this is changed.
+sub AddressInc {
+  my $addr = shift;
+  my $sum;
+
+  if ($address_length == 8) {
+    # Perl doesn't cope with wraparound arithmetic, so do it explicitly:
+    $sum = (hex($addr)+1) % (0x10000000 * 16);
+    return sprintf("%08x", $sum);
+
+  } else {
+    # Do the addition in 7-nibble chunks to trivialize carry handling.
+    # We are always doing this to step through the addresses in a function,
+    # and will almost never overflow the first chunk, so we check for this
+    # case and exit early.
+
+    # if ($main::opt_debug) { print STDERR "AddressInc $addr1 = "; }
+
+    my $a1 = substr($addr,-7);
+    $addr = substr($addr,0,-7);
+    $sum = hex($a1) + 1;
+    my $r = sprintf("%07x", $sum);
+    if ($sum <= 0xfffffff) {
+      $r = $addr . $r;
+      # if ($main::opt_debug) { print STDERR "$r\n"; }
+      return HexExtend($r);
+    } else {
+      $r = "0000000";
+    }
+
+    $a1 = substr($addr,-7);
+    $addr = substr($addr,0,-7);
+    $sum = hex($a1) + 1;
+    $r = sprintf("%07x", $sum) . $r;
+    if ($sum <= 0xfffffff) {
+      $r = $addr . $r;
+      # if ($main::opt_debug) { print STDERR "$r\n"; }
+      return HexExtend($r);
+    } else {
+      $r = "00000000000000";
+    }
+
+    $sum = hex($addr) + 1;
+    if ($sum > 0xff) { $sum -= 0x100; }
+    $r = sprintf("%02x", $sum) . $r;
+
+    # if ($main::opt_debug) { print STDERR "$r\n"; }
+    return $r;
+  }
+}
+
+# Extract symbols for all PC values found in profile
+sub ExtractSymbols {
+  my $libs = shift;
+  my $pcset = shift;
+
+  my $symbols = {};
+
+  # Map each PC value to the containing library.  To make this faster,
+  # we sort libraries by their starting pc value (highest first), and
+  # advance through the libraries as we advance the pc.  Sometimes the
+  # addresses of libraries may overlap with the addresses of the main
+  # binary, so to make sure the libraries 'win', we iterate over the
+  # libraries in reverse order (which assumes the binary doesn't start
+  # in the middle of a library, which seems a fair assumption).
+  my @pcs = (sort { $a cmp $b } keys(%{$pcset}));  # pcset is 0-extended strings
+  foreach my $lib (sort {$b->[1] cmp $a->[1]} @{$libs}) {
+    my $libname = $lib->[0];
+    my $start = $lib->[1];
+    my $finish = $lib->[2];
+    my $offset = $lib->[3];
+
+    # Use debug library if it exists
+    my $debug_libname = DebuggingLibrary($libname);
+    if ($debug_libname) {
+        $libname = $debug_libname;
+    }
+
+    # Get list of pcs that belong in this library.
+    my $contained = [];
+    my ($start_pc_index, $finish_pc_index);
+    # Find smallest finish_pc_index such that $finish < $pc[$finish_pc_index].
+    for ($finish_pc_index = $#pcs + 1; $finish_pc_index > 0;
+         $finish_pc_index--) {
+      last if $pcs[$finish_pc_index - 1] le $finish;
+    }
+    # Find smallest start_pc_index such that $start <= $pc[$start_pc_index].
+    for ($start_pc_index = $finish_pc_index; $start_pc_index > 0;
+         $start_pc_index--) {
+      last if $pcs[$start_pc_index - 1] lt $start;
+    }
+    # This keeps PC values higher than $pc[$finish_pc_index] in @pcs,
+    # in case there are overlaps in libraries and the main binary.
+    @{$contained} = splice(@pcs, $start_pc_index,
+                           $finish_pc_index - $start_pc_index);
+    # Map to symbols
+    MapToSymbols($libname, AddressSub($start, $offset), $contained, $symbols);
+  }
+
+  return $symbols;
+}
+
+# Map list of PC values to symbols for a given image
+sub MapToSymbols {
+  my $image = shift;
+  my $offset = shift;
+  my $pclist = shift;
+  my $symbols = shift;
+
+  my $debug = 0;
+
+  # Ignore empty binaries
+  if ($#{$pclist} < 0) { return; }
+
+  # Figure out the addr2line command to use
+  my $addr2line = $obj_tool_map{"addr2line"};
+  my $cmd = ShellEscape($addr2line, "-f", "-C", "-e", $image);
+  if (exists $obj_tool_map{"addr2line_pdb"}) {
+    $addr2line = $obj_tool_map{"addr2line_pdb"};
+    $cmd = ShellEscape($addr2line, "--demangle", "-f", "-C", "-e", $image);
+  }
+
+  # If "addr2line" isn't installed on the system at all, just use
+  # nm to get what info we can (function names, but not line numbers).
+  if (system(ShellEscape($addr2line, "--help") . " >$dev_null 2>&1") != 0) {
+    MapSymbolsWithNM($image, $offset, $pclist, $symbols);
+    return;
+  }
+
+  # "addr2line -i" can produce a variable number of lines per input
+  # address, with no separator that allows us to tell when data for
+  # the next address starts.  So we find the address for a special
+  # symbol (_fini) and interleave this address between all real
+  # addresses passed to addr2line.  The name of this special symbol
+  # can then be used as a separator.
+  $sep_address = undef;  # May be filled in by MapSymbolsWithNM()
+  my $nm_symbols = {};
+  MapSymbolsWithNM($image, $offset, $pclist, $nm_symbols);
+  if (defined($sep_address)) {
+    # Only add " -i" to addr2line if the binary supports it.
+    # addr2line --help returns 0, but not if it sees an unknown flag first.
+    if (system("$cmd -i --help >$dev_null 2>&1") == 0) {
+      $cmd .= " -i";
+    } else {
+      $sep_address = undef;   # no need for sep_address if we don't support -i
+    }
+  }
+
+  # Make file with all PC values with intervening 'sep_address' so
+  # that we can reliably detect the end of inlined function list
+  open(ADDRESSES, ">$main::tmpfile_sym") || error("$main::tmpfile_sym: $!\n");
+  if ($debug) { print("---- $image ---\n"); }
+  for (my $i = 0; $i <= $#{$pclist}; $i++) {
+    # addr2line always reads hex addresses, and does not need '0x' prefix.
+    if ($debug) { printf STDERR ("%s\n", $pclist->[$i]); }
+    printf ADDRESSES ("%s\n", AddressSub($pclist->[$i], $offset));
+    if (defined($sep_address)) {
+      printf ADDRESSES ("%s\n", $sep_address);
+    }
+  }
+  close(ADDRESSES);
+  if ($debug) {
+    print("----\n");
+    system("cat", $main::tmpfile_sym);
+    print("----\n");
+    system("$cmd < " . ShellEscape($main::tmpfile_sym));
+    print("----\n");
+  }
+
+  open(SYMBOLS, "$cmd <" . ShellEscape($main::tmpfile_sym) . " |")
+      || error("$cmd: $!\n");
+  my $count = 0;   # Index in pclist
+  while (<SYMBOLS>) {
+    # Read fullfunction and filelineinfo from next pair of lines
+    s/\r?\n$//g;
+    my $fullfunction = $_;
+    $_ = <SYMBOLS>;
+    s/\r?\n$//g;
+    my $filelinenum = $_;
+
+    if (defined($sep_address) && $fullfunction eq $sep_symbol) {
+      # Terminating marker for data for this address
+      $count++;
+      next;
+    }
+
+    $filelinenum =~ s|\\|/|g; # turn windows-style paths into unix-style paths
+
+    my $pcstr = $pclist->[$count];
+    my $function = ShortFunctionName($fullfunction);
+    my $nms = $nm_symbols->{$pcstr};
+    if (defined($nms)) {
+      if ($fullfunction eq '??') {
+        # nm found a symbol for us.
+        $function = $nms->[0];
+        $fullfunction = $nms->[2];
+      } else {
+	# MapSymbolsWithNM tags each routine with its starting address,
+	# useful in case the image has multiple occurrences of this
+	# routine.  (It uses a syntax that resembles template parameters,
+	# that are automatically stripped out by ShortFunctionName().)
+	# addr2line does not provide the same information.  So we check
+	# if nm disambiguated our symbol, and if so take the annotated
+	# (nm) version of the routine-name.  TODO(csilvers): this won't
+	# catch overloaded, inlined symbols, which nm doesn't see.
+	# Better would be to do a check similar to nm's, in this fn.
+	if ($nms->[2] =~ m/^\Q$function\E/) {  # sanity check it's the right fn
+	  $function = $nms->[0];
+	  $fullfunction = $nms->[2];
+	}
+      }
+    }
+
+    # Prepend to accumulated symbols for pcstr
+    # (so that caller comes before callee)
+    my $sym = $symbols->{$pcstr};
+    if (!defined($sym)) {
+      $sym = [];
+      $symbols->{$pcstr} = $sym;
+    }
+    unshift(@{$sym}, $function, $filelinenum, $fullfunction);
+    if ($debug) { printf STDERR ("%s => [%s]\n", $pcstr, join(" ", @{$sym})); }
+    if (!defined($sep_address)) {
+      # Inlining is off, so this entry ends immediately
+      $count++;
+    }
+  }
+  close(SYMBOLS);
+}
+
+# Use nm to map the list of referenced PCs to symbols.  Return true iff we
+# are able to read procedure information via nm.
+sub MapSymbolsWithNM {
+  my $image = shift;
+  my $offset = shift;
+  my $pclist = shift;
+  my $symbols = shift;
+
+  # Get nm output sorted by increasing address
+  my $symbol_table = GetProcedureBoundaries($image, ".");
+  if (!%{$symbol_table}) {
+    return 0;
+  }
+  # Start addresses are already the right length (8 or 16 hex digits).
+  my @names = sort { $symbol_table->{$a}->[0] cmp $symbol_table->{$b}->[0] }
+    keys(%{$symbol_table});
+
+  if ($#names < 0) {
+    # No symbols: just use addresses
+    foreach my $pc (@{$pclist}) {
+      my $pcstr = "0x" . $pc;
+      $symbols->{$pc} = [$pcstr, "?", $pcstr];
+    }
+    return 0;
+  }
+
+  # Sort addresses so we can do a join against nm output
+  my $index = 0;
+  my $fullname = $names[0];
+  my $name = ShortFunctionName($fullname);
+  foreach my $pc (sort { $a cmp $b } @{$pclist}) {
+    # Adjust for mapped offset
+    my $mpc = AddressSub($pc, $offset);
+    while (($index < $#names) && ($mpc ge $symbol_table->{$fullname}->[1])){
+      $index++;
+      $fullname = $names[$index];
+      $name = ShortFunctionName($fullname);
+    }
+    if ($mpc lt $symbol_table->{$fullname}->[1]) {
+      $symbols->{$pc} = [$name, "?", $fullname];
+    } else {
+      my $pcstr = "0x" . $pc;
+      $symbols->{$pc} = [$pcstr, "?", $pcstr];
+    }
+  }
+  return 1;
+}
+
+sub ShortFunctionName {
+  my $function = shift;
+  while ($function =~ s/\([^()]*\)(\s*const)?//g) { }   # Argument types
+  while ($function =~ s/<[^<>]*>//g)  { }    # Remove template arguments
+  $function =~ s/^.*\s+(\w+::)/$1/;          # Remove leading type
+  return $function;
+}
+
+# Trim overly long symbols found in disassembler output
+sub CleanDisassembly {
+  my $d = shift;
+  while ($d =~ s/\([^()%]*\)(\s*const)?//g) { } # Argument types, not (%rax)
+  while ($d =~ s/(\w+)<[^<>]*>/$1/g)  { }       # Remove template arguments
+  return $d;
+}
+
+# Clean file name for display
+sub CleanFileName {
+  my ($f) = @_;
+  $f =~ s|^/proc/self/cwd/||;
+  $f =~ s|^\./||;
+  return $f;
+}
+
+# Make address relative to section and clean up for display
+sub UnparseAddress {
+  my ($offset, $address) = @_;
+  $address = AddressSub($address, $offset);
+  $address =~ s/^0x//;
+  $address =~ s/^0*//;
+  return $address;
+}
+
+##### Miscellaneous #####
+
+# Find the right versions of the above object tools to use.  The
+# argument is the program file being analyzed, and should be an ELF
+# 32-bit or ELF 64-bit executable file.  The location of the tools
+# is determined by considering the following options in this order:
+#   1) --tools option, if set
+#   2) JEPROF_TOOLS environment variable, if set
+#   3) the environment
+sub ConfigureObjTools {
+  my $prog_file = shift;
+
+  # Check for the existence of $prog_file because /usr/bin/file does not
+  # predictably return error status in prod.
+  (-e $prog_file)  || error("$prog_file does not exist.\n");
+
+  my $file_type = undef;
+  if (-e "/usr/bin/file") {
+    # Follow symlinks (at least for systems where "file" supports that).
+    my $escaped_prog_file = ShellEscape($prog_file);
+    $file_type = `/usr/bin/file -L $escaped_prog_file 2>$dev_null ||
+                  /usr/bin/file $escaped_prog_file`;
+  } elsif ($^O == "MSWin32") {
+    $file_type = "MS Windows";
+  } else {
+    print STDERR "WARNING: Can't determine the file type of $prog_file";
+  }
+
+  if ($file_type =~ /64-bit/) {
+    # Change $address_length to 16 if the program file is ELF 64-bit.
+    # We can't detect this from many (most?) heap or lock contention
+    # profiles, since the actual addresses referenced are generally in low
+    # memory even for 64-bit programs.
+    $address_length = 16;
+  }
+
+  if ($file_type =~ /MS Windows/) {
+    # For windows, we provide a version of nm and addr2line as part of
+    # the opensource release, which is capable of parsing
+    # Windows-style PDB executables.  It should live in the path, or
+    # in the same directory as jeprof.
+    $obj_tool_map{"nm_pdb"} = "nm-pdb";
+    $obj_tool_map{"addr2line_pdb"} = "addr2line-pdb";
+  }
+
+  if ($file_type =~ /Mach-O/) {
+    # OS X uses otool to examine Mach-O files, rather than objdump.
+    $obj_tool_map{"otool"} = "otool";
+    $obj_tool_map{"addr2line"} = "false";  # no addr2line
+    $obj_tool_map{"objdump"} = "false";  # no objdump
+  }
+
+  # Go fill in %obj_tool_map with the pathnames to use:
+  foreach my $tool (keys %obj_tool_map) {
+    $obj_tool_map{$tool} = ConfigureTool($obj_tool_map{$tool});
+  }
+}
+
+# Returns the path of a caller-specified object tool.  If --tools or
+# JEPROF_TOOLS are specified, then returns the full path to the tool
+# with that prefix.  Otherwise, returns the path unmodified (which
+# means we will look for it on PATH).
+sub ConfigureTool {
+  my $tool = shift;
+  my $path;
+
+  # --tools (or $JEPROF_TOOLS) is a comma separated list, where each
+  # item is either a) a pathname prefix, or b) a map of the form
+  # <tool>:<path>.  First we look for an entry of type (b) for our
+  # tool.  If one is found, we use it.  Otherwise, we consider all the
+  # pathname prefixes in turn, until one yields an existing file.  If
+  # none does, we use a default path.
+  my $tools = $main::opt_tools || $ENV{"JEPROF_TOOLS"} || "";
+  if ($tools =~ m/(,|^)\Q$tool\E:([^,]*)/) {
+    $path = $2;
+    # TODO(csilvers): sanity-check that $path exists?  Hard if it's relative.
+  } elsif ($tools ne '') {
+    foreach my $prefix (split(',', $tools)) {
+      next if ($prefix =~ /:/);    # ignore "tool:fullpath" entries in the list
+      if (-x $prefix . $tool) {
+        $path = $prefix . $tool;
+        last;
+      }
+    }
+    if (!$path) {
+      error("No '$tool' found with prefix specified by " .
+            "--tools (or \$JEPROF_TOOLS) '$tools'\n");
+    }
+  } else {
+    # ... otherwise use the version that exists in the same directory as
+    # jeprof.  If there's nothing there, use $PATH.
+    $0 =~ m,[^/]*$,;     # this is everything after the last slash
+    my $dirname = $`;    # this is everything up to and including the last slash
+    if (-x "$dirname$tool") {
+      $path = "$dirname$tool";
+    } else {
+      $path = $tool;
+    }
+  }
+  if ($main::opt_debug) { print STDERR "Using '$path' for '$tool'.\n"; }
+  return $path;
+}
+
+sub ShellEscape {
+  my @escaped_words = ();
+  foreach my $word (@_) {
+    my $escaped_word = $word;
+    if ($word =~ m![^a-zA-Z0-9/.,_=-]!) {  # check for anything not in whitelist
+      $escaped_word =~ s/'/'\\''/;
+      $escaped_word = "'$escaped_word'";
+    }
+    push(@escaped_words, $escaped_word);
+  }
+  return join(" ", @escaped_words);
+}
+
+sub cleanup {
+  unlink($main::tmpfile_sym);
+  unlink(keys %main::tempnames);
+
+  # We leave any collected profiles in $HOME/jeprof in case the user wants
+  # to look at them later.  We print a message informing them of this.
+  if ((scalar(@main::profile_files) > 0) &&
+      defined($main::collected_profile)) {
+    if (scalar(@main::profile_files) == 1) {
+      print STDERR "Dynamically gathered profile is in $main::collected_profile\n";
+    }
+    print STDERR "If you want to investigate this profile further, you can do:\n";
+    print STDERR "\n";
+    print STDERR "  jeprof \\\n";
+    print STDERR "    $main::prog \\\n";
+    print STDERR "    $main::collected_profile\n";
+    print STDERR "\n";
+  }
+}
+
+sub sighandler {
+  cleanup();
+  exit(1);
+}
+
+sub error {
+  my $msg = shift;
+  print STDERR $msg;
+  cleanup();
+  exit(1);
+}
+
+
+# Run $nm_command and get all the resulting procedure boundaries whose
+# names match "$regexp" and returns them in a hashtable mapping from
+# procedure name to a two-element vector of [start address, end address]
+sub GetProcedureBoundariesViaNm {
+  my $escaped_nm_command = shift;    # shell-escaped
+  my $regexp = shift;
+
+  my $symbol_table = {};
+  open(NM, "$escaped_nm_command |") || error("$escaped_nm_command: $!\n");
+  my $last_start = "0";
+  my $routine = "";
+  while (<NM>) {
+    s/\r//g;         # turn windows-looking lines into unix-looking lines
+    if (m/^\s*([0-9a-f]+) (.) (..*)/) {
+      my $start_val = $1;
+      my $type = $2;
+      my $this_routine = $3;
+
+      # It's possible for two symbols to share the same address, if
+      # one is a zero-length variable (like __start_google_malloc) or
+      # one symbol is a weak alias to another (like __libc_malloc).
+      # In such cases, we want to ignore all values except for the
+      # actual symbol, which in nm-speak has type "T".  The logic
+      # below does this, though it's a bit tricky: what happens when
+      # we have a series of lines with the same address, is the first
+      # one gets queued up to be processed.  However, it won't
+      # *actually* be processed until later, when we read a line with
+      # a different address.  That means that as long as we're reading
+      # lines with the same address, we have a chance to replace that
+      # item in the queue, which we do whenever we see a 'T' entry --
+      # that is, a line with type 'T'.  If we never see a 'T' entry,
+      # we'll just go ahead and process the first entry (which never
+      # got touched in the queue), and ignore the others.
+      if ($start_val eq $last_start && $type =~ /t/i) {
+        # We are the 'T' symbol at this address, replace previous symbol.
+        $routine = $this_routine;
+        next;
+      } elsif ($start_val eq $last_start) {
+        # We're not the 'T' symbol at this address, so ignore us.
+        next;
+      }
+
+      if ($this_routine eq $sep_symbol) {
+        $sep_address = HexExtend($start_val);
+      }
+
+      # Tag this routine with the starting address in case the image
+      # has multiple occurrences of this routine.  We use a syntax
+      # that resembles template parameters that are automatically
+      # stripped out by ShortFunctionName()
+      $this_routine .= "<$start_val>";
+
+      if (defined($routine) && $routine =~ m/$regexp/) {
+        $symbol_table->{$routine} = [HexExtend($last_start),
+                                     HexExtend($start_val)];
+      }
+      $last_start = $start_val;
+      $routine = $this_routine;
+    } elsif (m/^Loaded image name: (.+)/) {
+      # The win32 nm workalike emits information about the binary it is using.
+      if ($main::opt_debug) { print STDERR "Using Image $1\n"; }
+    } elsif (m/^PDB file name: (.+)/) {
+      # The win32 nm workalike emits information about the pdb it is using.
+      if ($main::opt_debug) { print STDERR "Using PDB $1\n"; }
+    }
+  }
+  close(NM);
+  # Handle the last line in the nm output.  Unfortunately, we don't know
+  # how big this last symbol is, because we don't know how big the file
+  # is.  For now, we just give it a size of 0.
+  # TODO(csilvers): do better here.
+  if (defined($routine) && $routine =~ m/$regexp/) {
+    $symbol_table->{$routine} = [HexExtend($last_start),
+                                 HexExtend($last_start)];
+  }
+  return $symbol_table;
+}
+
+# Gets the procedure boundaries for all routines in "$image" whose names
+# match "$regexp" and returns them in a hashtable mapping from procedure
+# name to a two-element vector of [start address, end address].
+# Will return an empty map if nm is not installed or not working properly.
+sub GetProcedureBoundaries {
+  my $image = shift;
+  my $regexp = shift;
+
+  # If $image doesn't start with /, then put ./ in front of it.  This works
+  # around an obnoxious bug in our probing of nm -f behavior.
+  # "nm -f $image" is supposed to fail on GNU nm, but if:
+  #
+  # a. $image starts with [BbSsPp] (for example, bin/foo/bar), AND
+  # b. you have a.out in your current directory (a not uncommon occurrence)
+  #
+  # then "nm -f $image" succeeds because -f only looks at the first letter of
+  # the argument, which looks valid because it's [BbSsPp], and then since
+  # there's no image provided, it looks for a.out and finds it.
+  #
+  # This regex makes sure that $image starts with . or /, forcing the -f
+  # parsing to fail since . and / are not valid formats.
+  $image =~ s#^[^/]#./$&#;
+
+  # For libc libraries, the copy in /usr/lib/debug contains debugging symbols
+  my $debugging = DebuggingLibrary($image);
+  if ($debugging) {
+    $image = $debugging;
+  }
+
+  my $nm = $obj_tool_map{"nm"};
+  my $cppfilt = $obj_tool_map{"c++filt"};
+
+  # nm can fail for two reasons: 1) $image isn't a debug library; 2) nm
+  # binary doesn't support --demangle.  In addition, for OS X we need
+  # to use the -f flag to get 'flat' nm output (otherwise we don't sort
+  # properly and get incorrect results).  Unfortunately, GNU nm uses -f
+  # in an incompatible way.  So first we test whether our nm supports
+  # --demangle and -f.
+  my $demangle_flag = "";
+  my $cppfilt_flag = "";
+  my $to_devnull = ">$dev_null 2>&1";
+  if (system(ShellEscape($nm, "--demangle", $image) . $to_devnull) == 0) {
+    # In this mode, we do "nm --demangle <foo>"
+    $demangle_flag = "--demangle";
+    $cppfilt_flag = "";
+  } elsif (system(ShellEscape($cppfilt, $image) . $to_devnull) == 0) {
+    # In this mode, we do "nm <foo> | c++filt"
+    $cppfilt_flag = " | " . ShellEscape($cppfilt);
+  };
+  my $flatten_flag = "";
+  if (system(ShellEscape($nm, "-f", $image) . $to_devnull) == 0) {
+    $flatten_flag = "-f";
+  }
+
+  # Finally, in the case $imagie isn't a debug library, we try again with
+  # -D to at least get *exported* symbols.  If we can't use --demangle,
+  # we use c++filt instead, if it exists on this system.
+  my @nm_commands = (ShellEscape($nm, "-n", $flatten_flag, $demangle_flag,
+                                 $image) . " 2>$dev_null $cppfilt_flag",
+                     ShellEscape($nm, "-D", "-n", $flatten_flag, $demangle_flag,
+                                 $image) . " 2>$dev_null $cppfilt_flag",
+                     # 6nm is for Go binaries
+                     ShellEscape("6nm", "$image") . " 2>$dev_null | sort",
+                     );
+
+  # If the executable is an MS Windows PDB-format executable, we'll
+  # have set up obj_tool_map("nm_pdb").  In this case, we actually
+  # want to use both unix nm and windows-specific nm_pdb, since
+  # PDB-format executables can apparently include dwarf .o files.
+  if (exists $obj_tool_map{"nm_pdb"}) {
+    push(@nm_commands,
+         ShellEscape($obj_tool_map{"nm_pdb"}, "--demangle", $image)
+         . " 2>$dev_null");
+  }
+
+  foreach my $nm_command (@nm_commands) {
+    my $symbol_table = GetProcedureBoundariesViaNm($nm_command, $regexp);
+    return $symbol_table if (%{$symbol_table});
+  }
+  my $symbol_table = {};
+  return $symbol_table;
+}
+
+
+# The test vectors for AddressAdd/Sub/Inc are 8-16-nibble hex strings.
+# To make them more readable, we add underscores at interesting places.
+# This routine removes the underscores, producing the canonical representation
+# used by jeprof to represent addresses, particularly in the tested routines.
+sub CanonicalHex {
+  my $arg = shift;
+  return join '', (split '_',$arg);
+}
+
+
+# Unit test for AddressAdd:
+sub AddressAddUnitTest {
+  my $test_data_8 = shift;
+  my $test_data_16 = shift;
+  my $error_count = 0;
+  my $fail_count = 0;
+  my $pass_count = 0;
+  # print STDERR "AddressAddUnitTest: ", 1+$#{$test_data_8}, " tests\n";
+
+  # First a few 8-nibble addresses.  Note that this implementation uses
+  # plain old arithmetic, so a quick sanity check along with verifying what
+  # happens to overflow (we want it to wrap):
+  $address_length = 8;
+  foreach my $row (@{$test_data_8}) {
+    if ($main::opt_debug and $main::opt_test) { print STDERR "@{$row}\n"; }
+    my $sum = AddressAdd ($row->[0], $row->[1]);
+    if ($sum ne $row->[2]) {
+      printf STDERR "ERROR: %s != %s + %s = %s\n", $sum,
+             $row->[0], $row->[1], $row->[2];
+      ++$fail_count;
+    } else {
+      ++$pass_count;
+    }
+  }
+  printf STDERR "AddressAdd 32-bit tests: %d passes, %d failures\n",
+         $pass_count, $fail_count;
+  $error_count = $fail_count;
+  $fail_count = 0;
+  $pass_count = 0;
+
+  # Now 16-nibble addresses.
+  $address_length = 16;
+  foreach my $row (@{$test_data_16}) {
+    if ($main::opt_debug and $main::opt_test) { print STDERR "@{$row}\n"; }
+    my $sum = AddressAdd (CanonicalHex($row->[0]), CanonicalHex($row->[1]));
+    my $expected = join '', (split '_',$row->[2]);
+    if ($sum ne CanonicalHex($row->[2])) {
+      printf STDERR "ERROR: %s != %s + %s = %s\n", $sum,
+             $row->[0], $row->[1], $row->[2];
+      ++$fail_count;
+    } else {
+      ++$pass_count;
+    }
+  }
+  printf STDERR "AddressAdd 64-bit tests: %d passes, %d failures\n",
+         $pass_count, $fail_count;
+  $error_count += $fail_count;
+
+  return $error_count;
+}
+
+
+# Unit test for AddressSub:
+sub AddressSubUnitTest {
+  my $test_data_8 = shift;
+  my $test_data_16 = shift;
+  my $error_count = 0;
+  my $fail_count = 0;
+  my $pass_count = 0;
+  # print STDERR "AddressSubUnitTest: ", 1+$#{$test_data_8}, " tests\n";
+
+  # First a few 8-nibble addresses.  Note that this implementation uses
+  # plain old arithmetic, so a quick sanity check along with verifying what
+  # happens to overflow (we want it to wrap):
+  $address_length = 8;
+  foreach my $row (@{$test_data_8}) {
+    if ($main::opt_debug and $main::opt_test) { print STDERR "@{$row}\n"; }
+    my $sum = AddressSub ($row->[0], $row->[1]);
+    if ($sum ne $row->[3]) {
+      printf STDERR "ERROR: %s != %s - %s = %s\n", $sum,
+             $row->[0], $row->[1], $row->[3];
+      ++$fail_count;
+    } else {
+      ++$pass_count;
+    }
+  }
+  printf STDERR "AddressSub 32-bit tests: %d passes, %d failures\n",
+         $pass_count, $fail_count;
+  $error_count = $fail_count;
+  $fail_count = 0;
+  $pass_count = 0;
+
+  # Now 16-nibble addresses.
+  $address_length = 16;
+  foreach my $row (@{$test_data_16}) {
+    if ($main::opt_debug and $main::opt_test) { print STDERR "@{$row}\n"; }
+    my $sum = AddressSub (CanonicalHex($row->[0]), CanonicalHex($row->[1]));
+    if ($sum ne CanonicalHex($row->[3])) {
+      printf STDERR "ERROR: %s != %s - %s = %s\n", $sum,
+             $row->[0], $row->[1], $row->[3];
+      ++$fail_count;
+    } else {
+      ++$pass_count;
+    }
+  }
+  printf STDERR "AddressSub 64-bit tests: %d passes, %d failures\n",
+         $pass_count, $fail_count;
+  $error_count += $fail_count;
+
+  return $error_count;
+}
+
+
+# Unit test for AddressInc:
+sub AddressIncUnitTest {
+  my $test_data_8 = shift;
+  my $test_data_16 = shift;
+  my $error_count = 0;
+  my $fail_count = 0;
+  my $pass_count = 0;
+  # print STDERR "AddressIncUnitTest: ", 1+$#{$test_data_8}, " tests\n";
+
+  # First a few 8-nibble addresses.  Note that this implementation uses
+  # plain old arithmetic, so a quick sanity check along with verifying what
+  # happens to overflow (we want it to wrap):
+  $address_length = 8;
+  foreach my $row (@{$test_data_8}) {
+    if ($main::opt_debug and $main::opt_test) { print STDERR "@{$row}\n"; }
+    my $sum = AddressInc ($row->[0]);
+    if ($sum ne $row->[4]) {
+      printf STDERR "ERROR: %s != %s + 1 = %s\n", $sum,
+             $row->[0], $row->[4];
+      ++$fail_count;
+    } else {
+      ++$pass_count;
+    }
+  }
+  printf STDERR "AddressInc 32-bit tests: %d passes, %d failures\n",
+         $pass_count, $fail_count;
+  $error_count = $fail_count;
+  $fail_count = 0;
+  $pass_count = 0;
+
+  # Now 16-nibble addresses.
+  $address_length = 16;
+  foreach my $row (@{$test_data_16}) {
+    if ($main::opt_debug and $main::opt_test) { print STDERR "@{$row}\n"; }
+    my $sum = AddressInc (CanonicalHex($row->[0]));
+    if ($sum ne CanonicalHex($row->[4])) {
+      printf STDERR "ERROR: %s != %s + 1 = %s\n", $sum,
+             $row->[0], $row->[4];
+      ++$fail_count;
+    } else {
+      ++$pass_count;
+    }
+  }
+  printf STDERR "AddressInc 64-bit tests: %d passes, %d failures\n",
+         $pass_count, $fail_count;
+  $error_count += $fail_count;
+
+  return $error_count;
+}
+
+
+# Driver for unit tests.
+# Currently just the address add/subtract/increment routines for 64-bit.
+sub RunUnitTests {
+  my $error_count = 0;
+
+  # This is a list of tuples [a, b, a+b, a-b, a+1]
+  my $unit_test_data_8 = [
+    [qw(aaaaaaaa 50505050 fafafafa 5a5a5a5a aaaaaaab)],
+    [qw(50505050 aaaaaaaa fafafafa a5a5a5a6 50505051)],
+    [qw(ffffffff aaaaaaaa aaaaaaa9 55555555 00000000)],
+    [qw(00000001 ffffffff 00000000 00000002 00000002)],
+    [qw(00000001 fffffff0 fffffff1 00000011 00000002)],
+  ];
+  my $unit_test_data_16 = [
+    # The implementation handles data in 7-nibble chunks, so those are the
+    # interesting boundaries.
+    [qw(aaaaaaaa 50505050
+        00_000000f_afafafa 00_0000005_a5a5a5a 00_000000a_aaaaaab)],
+    [qw(50505050 aaaaaaaa
+        00_000000f_afafafa ff_ffffffa_5a5a5a6 00_0000005_0505051)],
+    [qw(ffffffff aaaaaaaa
+        00_000001a_aaaaaa9 00_0000005_5555555 00_0000010_0000000)],
+    [qw(00000001 ffffffff
+        00_0000010_0000000 ff_ffffff0_0000002 00_0000000_0000002)],
+    [qw(00000001 fffffff0
+        00_000000f_ffffff1 ff_ffffff0_0000011 00_0000000_0000002)],
+
+    [qw(00_a00000a_aaaaaaa 50505050
+        00_a00000f_afafafa 00_a000005_a5a5a5a 00_a00000a_aaaaaab)],
+    [qw(0f_fff0005_0505050 aaaaaaaa
+        0f_fff000f_afafafa 0f_ffefffa_5a5a5a6 0f_fff0005_0505051)],
+    [qw(00_000000f_fffffff 01_800000a_aaaaaaa
+        01_800001a_aaaaaa9 fe_8000005_5555555 00_0000010_0000000)],
+    [qw(00_0000000_0000001 ff_fffffff_fffffff
+        00_0000000_0000000 00_0000000_0000002 00_0000000_0000002)],
+    [qw(00_0000000_0000001 ff_fffffff_ffffff0
+        ff_fffffff_ffffff1 00_0000000_0000011 00_0000000_0000002)],
+  ];
+
+  $error_count += AddressAddUnitTest($unit_test_data_8, $unit_test_data_16);
+  $error_count += AddressSubUnitTest($unit_test_data_8, $unit_test_data_16);
+  $error_count += AddressIncUnitTest($unit_test_data_8, $unit_test_data_16);
+  if ($error_count > 0) {
+    print STDERR $error_count, " errors: FAILED\n";
+  } else {
+    print STDERR "PASS\n";
+  }
+  exit ($error_count);
+}
diff --git a/deps/jemalloc/build-aux/config.guess b/deps/jemalloc/build-aux/config.guess
new file mode 100755
index 0000000..f772702
--- /dev/null
+++ b/deps/jemalloc/build-aux/config.guess
@@ -0,0 +1,1701 @@
+#! /bin/sh
+# Attempt to guess a canonical system name.
+#   Copyright 1992-2021 Free Software Foundation, Inc.
+
+timestamp='2021-01-01'
+
+# This file is free software; you can redistribute it and/or modify it
+# under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful, but
+# WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+# General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, see <https://www.gnu.org/licenses/>.
+#
+# As a special exception to the GNU General Public License, if you
+# distribute this file as part of a program that contains a
+# configuration script generated by Autoconf, you may include it under
+# the same distribution terms that you use for the rest of that
+# program.  This Exception is an additional permission under section 7
+# of the GNU General Public License, version 3 ("GPLv3").
+#
+# Originally written by Per Bothner; maintained since 2000 by Ben Elliston.
+#
+# You can get the latest version of this script from:
+# https://git.savannah.gnu.org/cgit/config.git/plain/config.guess
+#
+# Please send patches to <config-patches@gnu.org>.
+
+
+me=$(echo "$0" | sed -e 's,.*/,,')
+
+usage="\
+Usage: $0 [OPTION]
+
+Output the configuration name of the system \`$me' is run on.
+
+Options:
+  -h, --help         print this help, then exit
+  -t, --time-stamp   print date of last modification, then exit
+  -v, --version      print version number, then exit
+
+Report bugs and patches to <config-patches@gnu.org>."
+
+version="\
+GNU config.guess ($timestamp)
+
+Originally written by Per Bothner.
+Copyright 1992-2021 Free Software Foundation, Inc.
+
+This is free software; see the source for copying conditions.  There is NO
+warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE."
+
+help="
+Try \`$me --help' for more information."
+
+# Parse command line
+while test $# -gt 0 ; do
+  case $1 in
+    --time-stamp | --time* | -t )
+       echo "$timestamp" ; exit ;;
+    --version | -v )
+       echo "$version" ; exit ;;
+    --help | --h* | -h )
+       echo "$usage"; exit ;;
+    -- )     # Stop option processing
+       shift; break ;;
+    - )	# Use stdin as input.
+       break ;;
+    -* )
+       echo "$me: invalid option $1$help" >&2
+       exit 1 ;;
+    * )
+       break ;;
+  esac
+done
+
+if test $# != 0; then
+  echo "$me: too many arguments$help" >&2
+  exit 1
+fi
+
+# CC_FOR_BUILD -- compiler used by this script. Note that the use of a
+# compiler to aid in system detection is discouraged as it requires
+# temporary files to be created and, as you can see below, it is a
+# headache to deal with in a portable fashion.
+
+# Historically, `CC_FOR_BUILD' used to be named `HOST_CC'. We still
+# use `HOST_CC' if defined, but it is deprecated.
+
+# Portable tmp directory creation inspired by the Autoconf team.
+
+tmp=
+# shellcheck disable=SC2172
+trap 'test -z "$tmp" || rm -fr "$tmp"' 0 1 2 13 15
+
+set_cc_for_build() {
+    # prevent multiple calls if $tmp is already set
+    test "$tmp" && return 0
+    : "${TMPDIR=/tmp}"
+    # shellcheck disable=SC2039
+    { tmp=$( (umask 077 && mktemp -d "$TMPDIR/cgXXXXXX") 2>/dev/null) && test -n "$tmp" && test -d "$tmp" ; } ||
+	{ test -n "$RANDOM" && tmp=$TMPDIR/cg$$-$RANDOM && (umask 077 && mkdir "$tmp" 2>/dev/null) ; } ||
+	{ tmp=$TMPDIR/cg-$$ && (umask 077 && mkdir "$tmp" 2>/dev/null) && echo "Warning: creating insecure temp directory" >&2 ; } ||
+	{ echo "$me: cannot create a temporary directory in $TMPDIR" >&2 ; exit 1 ; }
+    dummy=$tmp/dummy
+    case ${CC_FOR_BUILD-},${HOST_CC-},${CC-} in
+	,,)    echo "int x;" > "$dummy.c"
+	       for driver in cc gcc c89 c99 ; do
+		   if ($driver -c -o "$dummy.o" "$dummy.c") >/dev/null 2>&1 ; then
+		       CC_FOR_BUILD="$driver"
+		       break
+		   fi
+	       done
+	       if test x"$CC_FOR_BUILD" = x ; then
+		   CC_FOR_BUILD=no_compiler_found
+	       fi
+	       ;;
+	,,*)   CC_FOR_BUILD=$CC ;;
+	,*,*)  CC_FOR_BUILD=$HOST_CC ;;
+    esac
+}
+
+# This is needed to find uname on a Pyramid OSx when run in the BSD universe.
+# (ghazi@noc.rutgers.edu 1994-08-24)
+if test -f /.attbin/uname ; then
+	PATH=$PATH:/.attbin ; export PATH
+fi
+
+UNAME_MACHINE=$( (uname -m) 2>/dev/null) || UNAME_MACHINE=unknown
+UNAME_RELEASE=$( (uname -r) 2>/dev/null) || UNAME_RELEASE=unknown
+UNAME_SYSTEM=$( (uname -s) 2>/dev/null) || UNAME_SYSTEM=unknown
+UNAME_VERSION=$( (uname -v) 2>/dev/null) || UNAME_VERSION=unknown
+
+case "$UNAME_SYSTEM" in
+Linux|GNU|GNU/*)
+	LIBC=unknown
+
+	set_cc_for_build
+	cat <<-EOF > "$dummy.c"
+	#include <features.h>
+	#if defined(__UCLIBC__)
+	LIBC=uclibc
+	#elif defined(__dietlibc__)
+	LIBC=dietlibc
+	#elif defined(__GLIBC__)
+	LIBC=gnu
+	#else
+	#include <stdarg.h>
+	/* First heuristic to detect musl libc.  */
+	#ifdef __DEFINED_va_list
+	LIBC=musl
+	#endif
+	#endif
+	EOF
+	eval "$($CC_FOR_BUILD -E "$dummy.c" 2>/dev/null | grep '^LIBC' | sed 's, ,,g')"
+
+	# Second heuristic to detect musl libc.
+	if [ "$LIBC" = unknown ] &&
+	   command -v ldd >/dev/null &&
+	   ldd --version 2>&1 | grep -q ^musl; then
+		LIBC=musl
+	fi
+
+	# If the system lacks a compiler, then just pick glibc.
+	# We could probably try harder.
+	if [ "$LIBC" = unknown ]; then
+		LIBC=gnu
+	fi
+	;;
+esac
+
+# Note: order is significant - the case branches are not exclusive.
+
+case "$UNAME_MACHINE:$UNAME_SYSTEM:$UNAME_RELEASE:$UNAME_VERSION" in
+    *:NetBSD:*:*)
+	# NetBSD (nbsd) targets should (where applicable) match one or
+	# more of the tuples: *-*-netbsdelf*, *-*-netbsdaout*,
+	# *-*-netbsdecoff* and *-*-netbsd*.  For targets that recently
+	# switched to ELF, *-*-netbsd* would select the old
+	# object file format.  This provides both forward
+	# compatibility and a consistent mechanism for selecting the
+	# object file format.
+	#
+	# Note: NetBSD doesn't particularly care about the vendor
+	# portion of the name.  We always set it to "unknown".
+	sysctl="sysctl -n hw.machine_arch"
+	UNAME_MACHINE_ARCH=$( (uname -p 2>/dev/null || \
+	    "/sbin/$sysctl" 2>/dev/null || \
+	    "/usr/sbin/$sysctl" 2>/dev/null || \
+	    echo unknown))
+	case "$UNAME_MACHINE_ARCH" in
+	    aarch64eb) machine=aarch64_be-unknown ;;
+	    armeb) machine=armeb-unknown ;;
+	    arm*) machine=arm-unknown ;;
+	    sh3el) machine=shl-unknown ;;
+	    sh3eb) machine=sh-unknown ;;
+	    sh5el) machine=sh5le-unknown ;;
+	    earmv*)
+		arch=$(echo "$UNAME_MACHINE_ARCH" | sed -e 's,^e\(armv[0-9]\).*$,\1,')
+		endian=$(echo "$UNAME_MACHINE_ARCH" | sed -ne 's,^.*\(eb\)$,\1,p')
+		machine="${arch}${endian}"-unknown
+		;;
+	    *) machine="$UNAME_MACHINE_ARCH"-unknown ;;
+	esac
+	# The Operating System including object format, if it has switched
+	# to ELF recently (or will in the future) and ABI.
+	case "$UNAME_MACHINE_ARCH" in
+	    earm*)
+		os=netbsdelf
+		;;
+	    arm*|i386|m68k|ns32k|sh3*|sparc|vax)
+		set_cc_for_build
+		if echo __ELF__ | $CC_FOR_BUILD -E - 2>/dev/null \
+			| grep -q __ELF__
+		then
+		    # Once all utilities can be ECOFF (netbsdecoff) or a.out (netbsdaout).
+		    # Return netbsd for either.  FIX?
+		    os=netbsd
+		else
+		    os=netbsdelf
+		fi
+		;;
+	    *)
+		os=netbsd
+		;;
+	esac
+	# Determine ABI tags.
+	case "$UNAME_MACHINE_ARCH" in
+	    earm*)
+		expr='s/^earmv[0-9]/-eabi/;s/eb$//'
+		abi=$(echo "$UNAME_MACHINE_ARCH" | sed -e "$expr")
+		;;
+	esac
+	# The OS release
+	# Debian GNU/NetBSD machines have a different userland, and
+	# thus, need a distinct triplet. However, they do not need
+	# kernel version information, so it can be replaced with a
+	# suitable tag, in the style of linux-gnu.
+	case "$UNAME_VERSION" in
+	    Debian*)
+		release='-gnu'
+		;;
+	    *)
+		release=$(echo "$UNAME_RELEASE" | sed -e 's/[-_].*//' | cut -d. -f1,2)
+		;;
+	esac
+	# Since CPU_TYPE-MANUFACTURER-KERNEL-OPERATING_SYSTEM:
+	# contains redundant information, the shorter form:
+	# CPU_TYPE-MANUFACTURER-OPERATING_SYSTEM is used.
+	echo "$machine-${os}${release}${abi-}"
+	exit ;;
+    *:Bitrig:*:*)
+	UNAME_MACHINE_ARCH=$(arch | sed 's/Bitrig.//')
+	echo "$UNAME_MACHINE_ARCH"-unknown-bitrig"$UNAME_RELEASE"
+	exit ;;
+    *:OpenBSD:*:*)
+	UNAME_MACHINE_ARCH=$(arch | sed 's/OpenBSD.//')
+	echo "$UNAME_MACHINE_ARCH"-unknown-openbsd"$UNAME_RELEASE"
+	exit ;;
+    *:LibertyBSD:*:*)
+	UNAME_MACHINE_ARCH=$(arch | sed 's/^.*BSD\.//')
+	echo "$UNAME_MACHINE_ARCH"-unknown-libertybsd"$UNAME_RELEASE"
+	exit ;;
+    *:MidnightBSD:*:*)
+	echo "$UNAME_MACHINE"-unknown-midnightbsd"$UNAME_RELEASE"
+	exit ;;
+    *:ekkoBSD:*:*)
+	echo "$UNAME_MACHINE"-unknown-ekkobsd"$UNAME_RELEASE"
+	exit ;;
+    *:SolidBSD:*:*)
+	echo "$UNAME_MACHINE"-unknown-solidbsd"$UNAME_RELEASE"
+	exit ;;
+    *:OS108:*:*)
+	echo "$UNAME_MACHINE"-unknown-os108_"$UNAME_RELEASE"
+	exit ;;
+    macppc:MirBSD:*:*)
+	echo powerpc-unknown-mirbsd"$UNAME_RELEASE"
+	exit ;;
+    *:MirBSD:*:*)
+	echo "$UNAME_MACHINE"-unknown-mirbsd"$UNAME_RELEASE"
+	exit ;;
+    *:Sortix:*:*)
+	echo "$UNAME_MACHINE"-unknown-sortix
+	exit ;;
+    *:Twizzler:*:*)
+	echo "$UNAME_MACHINE"-unknown-twizzler
+	exit ;;
+    *:Redox:*:*)
+	echo "$UNAME_MACHINE"-unknown-redox
+	exit ;;
+    mips:OSF1:*.*)
+	echo mips-dec-osf1
+	exit ;;
+    alpha:OSF1:*:*)
+	case $UNAME_RELEASE in
+	*4.0)
+		UNAME_RELEASE=$(/usr/sbin/sizer -v | awk '{print $3}')
+		;;
+	*5.*)
+		UNAME_RELEASE=$(/usr/sbin/sizer -v | awk '{print $4}')
+		;;
+	esac
+	# According to Compaq, /usr/sbin/psrinfo has been available on
+	# OSF/1 and Tru64 systems produced since 1995.  I hope that
+	# covers most systems running today.  This code pipes the CPU
+	# types through head -n 1, so we only detect the type of CPU 0.
+	ALPHA_CPU_TYPE=$(/usr/sbin/psrinfo -v | sed -n -e 's/^  The alpha \(.*\) processor.*$/\1/p' | head -n 1)
+	case "$ALPHA_CPU_TYPE" in
+	    "EV4 (21064)")
+		UNAME_MACHINE=alpha ;;
+	    "EV4.5 (21064)")
+		UNAME_MACHINE=alpha ;;
+	    "LCA4 (21066/21068)")
+		UNAME_MACHINE=alpha ;;
+	    "EV5 (21164)")
+		UNAME_MACHINE=alphaev5 ;;
+	    "EV5.6 (21164A)")
+		UNAME_MACHINE=alphaev56 ;;
+	    "EV5.6 (21164PC)")
+		UNAME_MACHINE=alphapca56 ;;
+	    "EV5.7 (21164PC)")
+		UNAME_MACHINE=alphapca57 ;;
+	    "EV6 (21264)")
+		UNAME_MACHINE=alphaev6 ;;
+	    "EV6.7 (21264A)")
+		UNAME_MACHINE=alphaev67 ;;
+	    "EV6.8CB (21264C)")
+		UNAME_MACHINE=alphaev68 ;;
+	    "EV6.8AL (21264B)")
+		UNAME_MACHINE=alphaev68 ;;
+	    "EV6.8CX (21264D)")
+		UNAME_MACHINE=alphaev68 ;;
+	    "EV6.9A (21264/EV69A)")
+		UNAME_MACHINE=alphaev69 ;;
+	    "EV7 (21364)")
+		UNAME_MACHINE=alphaev7 ;;
+	    "EV7.9 (21364A)")
+		UNAME_MACHINE=alphaev79 ;;
+	esac
+	# A Pn.n version is a patched version.
+	# A Vn.n version is a released version.
+	# A Tn.n version is a released field test version.
+	# A Xn.n version is an unreleased experimental baselevel.
+	# 1.2 uses "1.2" for uname -r.
+	echo "$UNAME_MACHINE"-dec-osf"$(echo "$UNAME_RELEASE" | sed -e 's/^[PVTX]//' | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz)"
+	# Reset EXIT trap before exiting to avoid spurious non-zero exit code.
+	exitcode=$?
+	trap '' 0
+	exit $exitcode ;;
+    Amiga*:UNIX_System_V:4.0:*)
+	echo m68k-unknown-sysv4
+	exit ;;
+    *:[Aa]miga[Oo][Ss]:*:*)
+	echo "$UNAME_MACHINE"-unknown-amigaos
+	exit ;;
+    *:[Mm]orph[Oo][Ss]:*:*)
+	echo "$UNAME_MACHINE"-unknown-morphos
+	exit ;;
+    *:OS/390:*:*)
+	echo i370-ibm-openedition
+	exit ;;
+    *:z/VM:*:*)
+	echo s390-ibm-zvmoe
+	exit ;;
+    *:OS400:*:*)
+	echo powerpc-ibm-os400
+	exit ;;
+    arm:RISC*:1.[012]*:*|arm:riscix:1.[012]*:*)
+	echo arm-acorn-riscix"$UNAME_RELEASE"
+	exit ;;
+    arm*:riscos:*:*|arm*:RISCOS:*:*)
+	echo arm-unknown-riscos
+	exit ;;
+    SR2?01:HI-UX/MPP:*:* | SR8000:HI-UX/MPP:*:*)
+	echo hppa1.1-hitachi-hiuxmpp
+	exit ;;
+    Pyramid*:OSx*:*:* | MIS*:OSx*:*:* | MIS*:SMP_DC-OSx*:*:*)
+	# akee@wpdis03.wpafb.af.mil (Earle F. Ake) contributed MIS and NILE.
+	if test "$( (/bin/universe) 2>/dev/null)" = att ; then
+		echo pyramid-pyramid-sysv3
+	else
+		echo pyramid-pyramid-bsd
+	fi
+	exit ;;
+    NILE*:*:*:dcosx)
+	echo pyramid-pyramid-svr4
+	exit ;;
+    DRS?6000:unix:4.0:6*)
+	echo sparc-icl-nx6
+	exit ;;
+    DRS?6000:UNIX_SV:4.2*:7* | DRS?6000:isis:4.2*:7*)
+	case $(/usr/bin/uname -p) in
+	    sparc) echo sparc-icl-nx7; exit ;;
+	esac ;;
+    s390x:SunOS:*:*)
+	echo "$UNAME_MACHINE"-ibm-solaris2"$(echo "$UNAME_RELEASE" | sed -e 's/[^.]*//')"
+	exit ;;
+    sun4H:SunOS:5.*:*)
+	echo sparc-hal-solaris2"$(echo "$UNAME_RELEASE"|sed -e 's/[^.]*//')"
+	exit ;;
+    sun4*:SunOS:5.*:* | tadpole*:SunOS:5.*:*)
+	echo sparc-sun-solaris2"$(echo "$UNAME_RELEASE" | sed -e 's/[^.]*//')"
+	exit ;;
+    i86pc:AuroraUX:5.*:* | i86xen:AuroraUX:5.*:*)
+	echo i386-pc-auroraux"$UNAME_RELEASE"
+	exit ;;
+    i86pc:SunOS:5.*:* | i86xen:SunOS:5.*:*)
+	set_cc_for_build
+	SUN_ARCH=i386
+	# If there is a compiler, see if it is configured for 64-bit objects.
+	# Note that the Sun cc does not turn __LP64__ into 1 like gcc does.
+	# This test works for both compilers.
+	if test "$CC_FOR_BUILD" != no_compiler_found; then
+	    if (echo '#ifdef __amd64'; echo IS_64BIT_ARCH; echo '#endif') | \
+		(CCOPTS="" $CC_FOR_BUILD -E - 2>/dev/null) | \
+		grep IS_64BIT_ARCH >/dev/null
+	    then
+		SUN_ARCH=x86_64
+	    fi
+	fi
+	echo "$SUN_ARCH"-pc-solaris2"$(echo "$UNAME_RELEASE"|sed -e 's/[^.]*//')"
+	exit ;;
+    sun4*:SunOS:6*:*)
+	# According to config.sub, this is the proper way to canonicalize
+	# SunOS6.  Hard to guess exactly what SunOS6 will be like, but
+	# it's likely to be more like Solaris than SunOS4.
+	echo sparc-sun-solaris3"$(echo "$UNAME_RELEASE"|sed -e 's/[^.]*//')"
+	exit ;;
+    sun4*:SunOS:*:*)
+	case "$(/usr/bin/arch -k)" in
+	    Series*|S4*)
+		UNAME_RELEASE=$(uname -v)
+		;;
+	esac
+	# Japanese Language versions have a version number like `4.1.3-JL'.
+	echo sparc-sun-sunos"$(echo "$UNAME_RELEASE"|sed -e 's/-/_/')"
+	exit ;;
+    sun3*:SunOS:*:*)
+	echo m68k-sun-sunos"$UNAME_RELEASE"
+	exit ;;
+    sun*:*:4.2BSD:*)
+	UNAME_RELEASE=$( (sed 1q /etc/motd | awk '{print substr($5,1,3)}') 2>/dev/null)
+	test "x$UNAME_RELEASE" = x && UNAME_RELEASE=3
+	case "$(/bin/arch)" in
+	    sun3)
+		echo m68k-sun-sunos"$UNAME_RELEASE"
+		;;
+	    sun4)
+		echo sparc-sun-sunos"$UNAME_RELEASE"
+		;;
+	esac
+	exit ;;
+    aushp:SunOS:*:*)
+	echo sparc-auspex-sunos"$UNAME_RELEASE"
+	exit ;;
+    # The situation for MiNT is a little confusing.  The machine name
+    # can be virtually everything (everything which is not
+    # "atarist" or "atariste" at least should have a processor
+    # > m68000).  The system name ranges from "MiNT" over "FreeMiNT"
+    # to the lowercase version "mint" (or "freemint").  Finally
+    # the system name "TOS" denotes a system which is actually not
+    # MiNT.  But MiNT is downward compatible to TOS, so this should
+    # be no problem.
+    atarist[e]:*MiNT:*:* | atarist[e]:*mint:*:* | atarist[e]:*TOS:*:*)
+	echo m68k-atari-mint"$UNAME_RELEASE"
+	exit ;;
+    atari*:*MiNT:*:* | atari*:*mint:*:* | atarist[e]:*TOS:*:*)
+	echo m68k-atari-mint"$UNAME_RELEASE"
+	exit ;;
+    *falcon*:*MiNT:*:* | *falcon*:*mint:*:* | *falcon*:*TOS:*:*)
+	echo m68k-atari-mint"$UNAME_RELEASE"
+	exit ;;
+    milan*:*MiNT:*:* | milan*:*mint:*:* | *milan*:*TOS:*:*)
+	echo m68k-milan-mint"$UNAME_RELEASE"
+	exit ;;
+    hades*:*MiNT:*:* | hades*:*mint:*:* | *hades*:*TOS:*:*)
+	echo m68k-hades-mint"$UNAME_RELEASE"
+	exit ;;
+    *:*MiNT:*:* | *:*mint:*:* | *:*TOS:*:*)
+	echo m68k-unknown-mint"$UNAME_RELEASE"
+	exit ;;
+    m68k:machten:*:*)
+	echo m68k-apple-machten"$UNAME_RELEASE"
+	exit ;;
+    powerpc:machten:*:*)
+	echo powerpc-apple-machten"$UNAME_RELEASE"
+	exit ;;
+    RISC*:Mach:*:*)
+	echo mips-dec-mach_bsd4.3
+	exit ;;
+    RISC*:ULTRIX:*:*)
+	echo mips-dec-ultrix"$UNAME_RELEASE"
+	exit ;;
+    VAX*:ULTRIX*:*:*)
+	echo vax-dec-ultrix"$UNAME_RELEASE"
+	exit ;;
+    2020:CLIX:*:* | 2430:CLIX:*:*)
+	echo clipper-intergraph-clix"$UNAME_RELEASE"
+	exit ;;
+    mips:*:*:UMIPS | mips:*:*:RISCos)
+	set_cc_for_build
+	sed 's/^	//' << EOF > "$dummy.c"
+#ifdef __cplusplus
+#include <stdio.h>  /* for printf() prototype */
+	int main (int argc, char *argv[]) {
+#else
+	int main (argc, argv) int argc; char *argv[]; {
+#endif
+	#if defined (host_mips) && defined (MIPSEB)
+	#if defined (SYSTYPE_SYSV)
+	  printf ("mips-mips-riscos%ssysv\\n", argv[1]); exit (0);
+	#endif
+	#if defined (SYSTYPE_SVR4)
+	  printf ("mips-mips-riscos%ssvr4\\n", argv[1]); exit (0);
+	#endif
+	#if defined (SYSTYPE_BSD43) || defined(SYSTYPE_BSD)
+	  printf ("mips-mips-riscos%sbsd\\n", argv[1]); exit (0);
+	#endif
+	#endif
+	  exit (-1);
+	}
+EOF
+	$CC_FOR_BUILD -o "$dummy" "$dummy.c" &&
+	  dummyarg=$(echo "$UNAME_RELEASE" | sed -n 's/\([0-9]*\).*/\1/p') &&
+	  SYSTEM_NAME=$("$dummy" "$dummyarg") &&
+	    { echo "$SYSTEM_NAME"; exit; }
+	echo mips-mips-riscos"$UNAME_RELEASE"
+	exit ;;
+    Motorola:PowerMAX_OS:*:*)
+	echo powerpc-motorola-powermax
+	exit ;;
+    Motorola:*:4.3:PL8-*)
+	echo powerpc-harris-powermax
+	exit ;;
+    Night_Hawk:*:*:PowerMAX_OS | Synergy:PowerMAX_OS:*:*)
+	echo powerpc-harris-powermax
+	exit ;;
+    Night_Hawk:Power_UNIX:*:*)
+	echo powerpc-harris-powerunix
+	exit ;;
+    m88k:CX/UX:7*:*)
+	echo m88k-harris-cxux7
+	exit ;;
+    m88k:*:4*:R4*)
+	echo m88k-motorola-sysv4
+	exit ;;
+    m88k:*:3*:R3*)
+	echo m88k-motorola-sysv3
+	exit ;;
+    AViiON:dgux:*:*)
+	# DG/UX returns AViiON for all architectures
+	UNAME_PROCESSOR=$(/usr/bin/uname -p)
+	if test "$UNAME_PROCESSOR" = mc88100 || test "$UNAME_PROCESSOR" = mc88110
+	then
+	    if test "$TARGET_BINARY_INTERFACE"x = m88kdguxelfx || \
+	       test "$TARGET_BINARY_INTERFACE"x = x
+	    then
+		echo m88k-dg-dgux"$UNAME_RELEASE"
+	    else
+		echo m88k-dg-dguxbcs"$UNAME_RELEASE"
+	    fi
+	else
+	    echo i586-dg-dgux"$UNAME_RELEASE"
+	fi
+	exit ;;
+    M88*:DolphinOS:*:*)	# DolphinOS (SVR3)
+	echo m88k-dolphin-sysv3
+	exit ;;
+    M88*:*:R3*:*)
+	# Delta 88k system running SVR3
+	echo m88k-motorola-sysv3
+	exit ;;
+    XD88*:*:*:*) # Tektronix XD88 system running UTekV (SVR3)
+	echo m88k-tektronix-sysv3
+	exit ;;
+    Tek43[0-9][0-9]:UTek:*:*) # Tektronix 4300 system running UTek (BSD)
+	echo m68k-tektronix-bsd
+	exit ;;
+    *:IRIX*:*:*)
+	echo mips-sgi-irix"$(echo "$UNAME_RELEASE"|sed -e 's/-/_/g')"
+	exit ;;
+    ????????:AIX?:[12].1:2)   # AIX 2.2.1 or AIX 2.1.1 is RT/PC AIX.
+	echo romp-ibm-aix     # uname -m gives an 8 hex-code CPU id
+	exit ;;               # Note that: echo "'$(uname -s)'" gives 'AIX '
+    i*86:AIX:*:*)
+	echo i386-ibm-aix
+	exit ;;
+    ia64:AIX:*:*)
+	if test -x /usr/bin/oslevel ; then
+		IBM_REV=$(/usr/bin/oslevel)
+	else
+		IBM_REV="$UNAME_VERSION.$UNAME_RELEASE"
+	fi
+	echo "$UNAME_MACHINE"-ibm-aix"$IBM_REV"
+	exit ;;
+    *:AIX:2:3)
+	if grep bos325 /usr/include/stdio.h >/dev/null 2>&1; then
+		set_cc_for_build
+		sed 's/^		//' << EOF > "$dummy.c"
+		#include <sys/systemcfg.h>
+
+		main()
+			{
+			if (!__power_pc())
+				exit(1);
+			puts("powerpc-ibm-aix3.2.5");
+			exit(0);
+			}
+EOF
+		if $CC_FOR_BUILD -o "$dummy" "$dummy.c" && SYSTEM_NAME=$("$dummy")
+		then
+			echo "$SYSTEM_NAME"
+		else
+			echo rs6000-ibm-aix3.2.5
+		fi
+	elif grep bos324 /usr/include/stdio.h >/dev/null 2>&1; then
+		echo rs6000-ibm-aix3.2.4
+	else
+		echo rs6000-ibm-aix3.2
+	fi
+	exit ;;
+    *:AIX:*:[4567])
+	IBM_CPU_ID=$(/usr/sbin/lsdev -C -c processor -S available | sed 1q | awk '{ print $1 }')
+	if /usr/sbin/lsattr -El "$IBM_CPU_ID" | grep ' POWER' >/dev/null 2>&1; then
+		IBM_ARCH=rs6000
+	else
+		IBM_ARCH=powerpc
+	fi
+	if test -x /usr/bin/lslpp ; then
+		IBM_REV=$(/usr/bin/lslpp -Lqc bos.rte.libc |
+			   awk -F: '{ print $3 }' | sed s/[0-9]*$/0/)
+	else
+		IBM_REV="$UNAME_VERSION.$UNAME_RELEASE"
+	fi
+	echo "$IBM_ARCH"-ibm-aix"$IBM_REV"
+	exit ;;
+    *:AIX:*:*)
+	echo rs6000-ibm-aix
+	exit ;;
+    ibmrt:4.4BSD:*|romp-ibm:4.4BSD:*)
+	echo romp-ibm-bsd4.4
+	exit ;;
+    ibmrt:*BSD:*|romp-ibm:BSD:*)            # covers RT/PC BSD and
+	echo romp-ibm-bsd"$UNAME_RELEASE"   # 4.3 with uname added to
+	exit ;;                             # report: romp-ibm BSD 4.3
+    *:BOSX:*:*)
+	echo rs6000-bull-bosx
+	exit ;;
+    DPX/2?00:B.O.S.:*:*)
+	echo m68k-bull-sysv3
+	exit ;;
+    9000/[34]??:4.3bsd:1.*:*)
+	echo m68k-hp-bsd
+	exit ;;
+    hp300:4.4BSD:*:* | 9000/[34]??:4.3bsd:2.*:*)
+	echo m68k-hp-bsd4.4
+	exit ;;
+    9000/[34678]??:HP-UX:*:*)
+	HPUX_REV=$(echo "$UNAME_RELEASE"|sed -e 's/[^.]*.[0B]*//')
+	case "$UNAME_MACHINE" in
+	    9000/31?)            HP_ARCH=m68000 ;;
+	    9000/[34]??)         HP_ARCH=m68k ;;
+	    9000/[678][0-9][0-9])
+		if test -x /usr/bin/getconf; then
+		    sc_cpu_version=$(/usr/bin/getconf SC_CPU_VERSION 2>/dev/null)
+		    sc_kernel_bits=$(/usr/bin/getconf SC_KERNEL_BITS 2>/dev/null)
+		    case "$sc_cpu_version" in
+		      523) HP_ARCH=hppa1.0 ;; # CPU_PA_RISC1_0
+		      528) HP_ARCH=hppa1.1 ;; # CPU_PA_RISC1_1
+		      532)                      # CPU_PA_RISC2_0
+			case "$sc_kernel_bits" in
+			  32) HP_ARCH=hppa2.0n ;;
+			  64) HP_ARCH=hppa2.0w ;;
+			  '') HP_ARCH=hppa2.0 ;;   # HP-UX 10.20
+			esac ;;
+		    esac
+		fi
+		if test "$HP_ARCH" = ""; then
+		    set_cc_for_build
+		    sed 's/^		//' << EOF > "$dummy.c"
+
+		#define _HPUX_SOURCE
+		#include <stdlib.h>
+		#include <unistd.h>
+
+		int main ()
+		{
+		#if defined(_SC_KERNEL_BITS)
+		    long bits = sysconf(_SC_KERNEL_BITS);
+		#endif
+		    long cpu  = sysconf (_SC_CPU_VERSION);
+
+		    switch (cpu)
+			{
+			case CPU_PA_RISC1_0: puts ("hppa1.0"); break;
+			case CPU_PA_RISC1_1: puts ("hppa1.1"); break;
+			case CPU_PA_RISC2_0:
+		#if defined(_SC_KERNEL_BITS)
+			    switch (bits)
+				{
+				case 64: puts ("hppa2.0w"); break;
+				case 32: puts ("hppa2.0n"); break;
+				default: puts ("hppa2.0"); break;
+				} break;
+		#else  /* !defined(_SC_KERNEL_BITS) */
+			    puts ("hppa2.0"); break;
+		#endif
+			default: puts ("hppa1.0"); break;
+			}
+		    exit (0);
+		}
+EOF
+		    (CCOPTS="" $CC_FOR_BUILD -o "$dummy" "$dummy.c" 2>/dev/null) && HP_ARCH=$("$dummy")
+		    test -z "$HP_ARCH" && HP_ARCH=hppa
+		fi ;;
+	esac
+	if test "$HP_ARCH" = hppa2.0w
+	then
+	    set_cc_for_build
+
+	    # hppa2.0w-hp-hpux* has a 64-bit kernel and a compiler generating
+	    # 32-bit code.  hppa64-hp-hpux* has the same kernel and a compiler
+	    # generating 64-bit code.  GNU and HP use different nomenclature:
+	    #
+	    # $ CC_FOR_BUILD=cc ./config.guess
+	    # => hppa2.0w-hp-hpux11.23
+	    # $ CC_FOR_BUILD="cc +DA2.0w" ./config.guess
+	    # => hppa64-hp-hpux11.23
+
+	    if echo __LP64__ | (CCOPTS="" $CC_FOR_BUILD -E - 2>/dev/null) |
+		grep -q __LP64__
+	    then
+		HP_ARCH=hppa2.0w
+	    else
+		HP_ARCH=hppa64
+	    fi
+	fi
+	echo "$HP_ARCH"-hp-hpux"$HPUX_REV"
+	exit ;;
+    ia64:HP-UX:*:*)
+	HPUX_REV=$(echo "$UNAME_RELEASE"|sed -e 's/[^.]*.[0B]*//')
+	echo ia64-hp-hpux"$HPUX_REV"
+	exit ;;
+    3050*:HI-UX:*:*)
+	set_cc_for_build
+	sed 's/^	//' << EOF > "$dummy.c"
+	#include <unistd.h>
+	int
+	main ()
+	{
+	  long cpu = sysconf (_SC_CPU_VERSION);
+	  /* The order matters, because CPU_IS_HP_MC68K erroneously returns
+	     true for CPU_PA_RISC1_0.  CPU_IS_PA_RISC returns correct
+	     results, however.  */
+	  if (CPU_IS_PA_RISC (cpu))
+	    {
+	      switch (cpu)
+		{
+		  case CPU_PA_RISC1_0: puts ("hppa1.0-hitachi-hiuxwe2"); break;
+		  case CPU_PA_RISC1_1: puts ("hppa1.1-hitachi-hiuxwe2"); break;
+		  case CPU_PA_RISC2_0: puts ("hppa2.0-hitachi-hiuxwe2"); break;
+		  default: puts ("hppa-hitachi-hiuxwe2"); break;
+		}
+	    }
+	  else if (CPU_IS_HP_MC68K (cpu))
+	    puts ("m68k-hitachi-hiuxwe2");
+	  else puts ("unknown-hitachi-hiuxwe2");
+	  exit (0);
+	}
+EOF
+	$CC_FOR_BUILD -o "$dummy" "$dummy.c" && SYSTEM_NAME=$("$dummy") &&
+		{ echo "$SYSTEM_NAME"; exit; }
+	echo unknown-hitachi-hiuxwe2
+	exit ;;
+    9000/7??:4.3bsd:*:* | 9000/8?[79]:4.3bsd:*:*)
+	echo hppa1.1-hp-bsd
+	exit ;;
+    9000/8??:4.3bsd:*:*)
+	echo hppa1.0-hp-bsd
+	exit ;;
+    *9??*:MPE/iX:*:* | *3000*:MPE/iX:*:*)
+	echo hppa1.0-hp-mpeix
+	exit ;;
+    hp7??:OSF1:*:* | hp8?[79]:OSF1:*:*)
+	echo hppa1.1-hp-osf
+	exit ;;
+    hp8??:OSF1:*:*)
+	echo hppa1.0-hp-osf
+	exit ;;
+    i*86:OSF1:*:*)
+	if test -x /usr/sbin/sysversion ; then
+	    echo "$UNAME_MACHINE"-unknown-osf1mk
+	else
+	    echo "$UNAME_MACHINE"-unknown-osf1
+	fi
+	exit ;;
+    parisc*:Lites*:*:*)
+	echo hppa1.1-hp-lites
+	exit ;;
+    C1*:ConvexOS:*:* | convex:ConvexOS:C1*:*)
+	echo c1-convex-bsd
+	exit ;;
+    C2*:ConvexOS:*:* | convex:ConvexOS:C2*:*)
+	if getsysinfo -f scalar_acc
+	then echo c32-convex-bsd
+	else echo c2-convex-bsd
+	fi
+	exit ;;
+    C34*:ConvexOS:*:* | convex:ConvexOS:C34*:*)
+	echo c34-convex-bsd
+	exit ;;
+    C38*:ConvexOS:*:* | convex:ConvexOS:C38*:*)
+	echo c38-convex-bsd
+	exit ;;
+    C4*:ConvexOS:*:* | convex:ConvexOS:C4*:*)
+	echo c4-convex-bsd
+	exit ;;
+    CRAY*Y-MP:*:*:*)
+	echo ymp-cray-unicos"$UNAME_RELEASE" | sed -e 's/\.[^.]*$/.X/'
+	exit ;;
+    CRAY*[A-Z]90:*:*:*)
+	echo "$UNAME_MACHINE"-cray-unicos"$UNAME_RELEASE" \
+	| sed -e 's/CRAY.*\([A-Z]90\)/\1/' \
+	      -e y/ABCDEFGHIJKLMNOPQRSTUVWXYZ/abcdefghijklmnopqrstuvwxyz/ \
+	      -e 's/\.[^.]*$/.X/'
+	exit ;;
+    CRAY*TS:*:*:*)
+	echo t90-cray-unicos"$UNAME_RELEASE" | sed -e 's/\.[^.]*$/.X/'
+	exit ;;
+    CRAY*T3E:*:*:*)
+	echo alphaev5-cray-unicosmk"$UNAME_RELEASE" | sed -e 's/\.[^.]*$/.X/'
+	exit ;;
+    CRAY*SV1:*:*:*)
+	echo sv1-cray-unicos"$UNAME_RELEASE" | sed -e 's/\.[^.]*$/.X/'
+	exit ;;
+    *:UNICOS/mp:*:*)
+	echo craynv-cray-unicosmp"$UNAME_RELEASE" | sed -e 's/\.[^.]*$/.X/'
+	exit ;;
+    F30[01]:UNIX_System_V:*:* | F700:UNIX_System_V:*:*)
+	FUJITSU_PROC=$(uname -m | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz)
+	FUJITSU_SYS=$(uname -p | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz | sed -e 's/\///')
+	FUJITSU_REL=$(echo "$UNAME_RELEASE" | sed -e 's/ /_/')
+	echo "${FUJITSU_PROC}-fujitsu-${FUJITSU_SYS}${FUJITSU_REL}"
+	exit ;;
+    5000:UNIX_System_V:4.*:*)
+	FUJITSU_SYS=$(uname -p | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz | sed -e 's/\///')
+	FUJITSU_REL=$(echo "$UNAME_RELEASE" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz | sed -e 's/ /_/')
+	echo "sparc-fujitsu-${FUJITSU_SYS}${FUJITSU_REL}"
+	exit ;;
+    i*86:BSD/386:*:* | i*86:BSD/OS:*:* | *:Ascend\ Embedded/OS:*:*)
+	echo "$UNAME_MACHINE"-pc-bsdi"$UNAME_RELEASE"
+	exit ;;
+    sparc*:BSD/OS:*:*)
+	echo sparc-unknown-bsdi"$UNAME_RELEASE"
+	exit ;;
+    *:BSD/OS:*:*)
+	echo "$UNAME_MACHINE"-unknown-bsdi"$UNAME_RELEASE"
+	exit ;;
+    arm:FreeBSD:*:*)
+	UNAME_PROCESSOR=$(uname -p)
+	set_cc_for_build
+	if echo __ARM_PCS_VFP | $CC_FOR_BUILD -E - 2>/dev/null \
+	    | grep -q __ARM_PCS_VFP
+	then
+	    echo "${UNAME_PROCESSOR}"-unknown-freebsd"$(echo ${UNAME_RELEASE}|sed -e 's/[-(].*//')"-gnueabi
+	else
+	    echo "${UNAME_PROCESSOR}"-unknown-freebsd"$(echo ${UNAME_RELEASE}|sed -e 's/[-(].*//')"-gnueabihf
+	fi
+	exit ;;
+    *:FreeBSD:*:*)
+	UNAME_PROCESSOR=$(/usr/bin/uname -p)
+	case "$UNAME_PROCESSOR" in
+	    amd64)
+		UNAME_PROCESSOR=x86_64 ;;
+	    i386)
+		UNAME_PROCESSOR=i586 ;;
+	esac
+	echo "$UNAME_PROCESSOR"-unknown-freebsd"$(echo "$UNAME_RELEASE"|sed -e 's/[-(].*//')"
+	exit ;;
+    i*:CYGWIN*:*)
+	echo "$UNAME_MACHINE"-pc-cygwin
+	exit ;;
+    *:MINGW64*:*)
+	echo "$UNAME_MACHINE"-pc-mingw64
+	exit ;;
+    *:MINGW*:*)
+	echo "$UNAME_MACHINE"-pc-mingw32
+	exit ;;
+    *:MSYS*:*)
+	echo "$UNAME_MACHINE"-pc-msys
+	exit ;;
+    i*:PW*:*)
+	echo "$UNAME_MACHINE"-pc-pw32
+	exit ;;
+    *:Interix*:*)
+	case "$UNAME_MACHINE" in
+	    x86)
+		echo i586-pc-interix"$UNAME_RELEASE"
+		exit ;;
+	    authenticamd | genuineintel | EM64T)
+		echo x86_64-unknown-interix"$UNAME_RELEASE"
+		exit ;;
+	    IA64)
+		echo ia64-unknown-interix"$UNAME_RELEASE"
+		exit ;;
+	esac ;;
+    i*:UWIN*:*)
+	echo "$UNAME_MACHINE"-pc-uwin
+	exit ;;
+    amd64:CYGWIN*:*:* | x86_64:CYGWIN*:*:*)
+	echo x86_64-pc-cygwin
+	exit ;;
+    prep*:SunOS:5.*:*)
+	echo powerpcle-unknown-solaris2"$(echo "$UNAME_RELEASE"|sed -e 's/[^.]*//')"
+	exit ;;
+    *:GNU:*:*)
+	# the GNU system
+	echo "$(echo "$UNAME_MACHINE"|sed -e 's,[-/].*$,,')-unknown-$LIBC$(echo "$UNAME_RELEASE"|sed -e 's,/.*$,,')"
+	exit ;;
+    *:GNU/*:*:*)
+	# other systems with GNU libc and userland
+	echo "$UNAME_MACHINE-unknown-$(echo "$UNAME_SYSTEM" | sed 's,^[^/]*/,,' | tr "[:upper:]" "[:lower:]")$(echo "$UNAME_RELEASE"|sed -e 's/[-(].*//')-$LIBC"
+	exit ;;
+    *:Minix:*:*)
+	echo "$UNAME_MACHINE"-unknown-minix
+	exit ;;
+    aarch64:Linux:*:*)
+	echo "$UNAME_MACHINE"-unknown-linux-"$LIBC"
+	exit ;;
+    aarch64_be:Linux:*:*)
+	UNAME_MACHINE=aarch64_be
+	echo "$UNAME_MACHINE"-unknown-linux-"$LIBC"
+	exit ;;
+    alpha:Linux:*:*)
+	case $(sed -n '/^cpu model/s/^.*: \(.*\)/\1/p' /proc/cpuinfo 2>/dev/null) in
+	  EV5)   UNAME_MACHINE=alphaev5 ;;
+	  EV56)  UNAME_MACHINE=alphaev56 ;;
+	  PCA56) UNAME_MACHINE=alphapca56 ;;
+	  PCA57) UNAME_MACHINE=alphapca56 ;;
+	  EV6)   UNAME_MACHINE=alphaev6 ;;
+	  EV67)  UNAME_MACHINE=alphaev67 ;;
+	  EV68*) UNAME_MACHINE=alphaev68 ;;
+	esac
+	objdump --private-headers /bin/sh | grep -q ld.so.1
+	if test "$?" = 0 ; then LIBC=gnulibc1 ; fi
+	echo "$UNAME_MACHINE"-unknown-linux-"$LIBC"
+	exit ;;
+    arc:Linux:*:* | arceb:Linux:*:*)
+	echo "$UNAME_MACHINE"-unknown-linux-"$LIBC"
+	exit ;;
+    arm*:Linux:*:*)
+	set_cc_for_build
+	if echo __ARM_EABI__ | $CC_FOR_BUILD -E - 2>/dev/null \
+	    | grep -q __ARM_EABI__
+	then
+	    echo "$UNAME_MACHINE"-unknown-linux-"$LIBC"
+	else
+	    if echo __ARM_PCS_VFP | $CC_FOR_BUILD -E - 2>/dev/null \
+		| grep -q __ARM_PCS_VFP
+	    then
+		echo "$UNAME_MACHINE"-unknown-linux-"$LIBC"eabi
+	    else
+		echo "$UNAME_MACHINE"-unknown-linux-"$LIBC"eabihf
+	    fi
+	fi
+	exit ;;
+    avr32*:Linux:*:*)
+	echo "$UNAME_MACHINE"-unknown-linux-"$LIBC"
+	exit ;;
+    cris:Linux:*:*)
+	echo "$UNAME_MACHINE"-axis-linux-"$LIBC"
+	exit ;;
+    crisv32:Linux:*:*)
+	echo "$UNAME_MACHINE"-axis-linux-"$LIBC"
+	exit ;;
+    e2k:Linux:*:*)
+	echo "$UNAME_MACHINE"-unknown-linux-"$LIBC"
+	exit ;;
+    frv:Linux:*:*)
+	echo "$UNAME_MACHINE"-unknown-linux-"$LIBC"
+	exit ;;
+    hexagon:Linux:*:*)
+	echo "$UNAME_MACHINE"-unknown-linux-"$LIBC"
+	exit ;;
+    i*86:Linux:*:*)
+	echo "$UNAME_MACHINE"-pc-linux-"$LIBC"
+	exit ;;
+    ia64:Linux:*:*)
+	echo "$UNAME_MACHINE"-unknown-linux-"$LIBC"
+	exit ;;
+    k1om:Linux:*:*)
+	echo "$UNAME_MACHINE"-unknown-linux-"$LIBC"
+	exit ;;
+    loongarch32:Linux:*:* | loongarch64:Linux:*:* | loongarchx32:Linux:*:*)
+	echo "$UNAME_MACHINE"-unknown-linux-"$LIBC"
+	exit ;;
+    m32r*:Linux:*:*)
+	echo "$UNAME_MACHINE"-unknown-linux-"$LIBC"
+	exit ;;
+    m68*:Linux:*:*)
+	echo "$UNAME_MACHINE"-unknown-linux-"$LIBC"
+	exit ;;
+    mips:Linux:*:* | mips64:Linux:*:*)
+	set_cc_for_build
+	IS_GLIBC=0
+	test x"${LIBC}" = xgnu && IS_GLIBC=1
+	sed 's/^	//' << EOF > "$dummy.c"
+	#undef CPU
+	#undef mips
+	#undef mipsel
+	#undef mips64
+	#undef mips64el
+	#if ${IS_GLIBC} && defined(_ABI64)
+	LIBCABI=gnuabi64
+	#else
+	#if ${IS_GLIBC} && defined(_ABIN32)
+	LIBCABI=gnuabin32
+	#else
+	LIBCABI=${LIBC}
+	#endif
+	#endif
+
+	#if ${IS_GLIBC} && defined(__mips64) && defined(__mips_isa_rev) && __mips_isa_rev>=6
+	CPU=mipsisa64r6
+	#else
+	#if ${IS_GLIBC} && !defined(__mips64) && defined(__mips_isa_rev) && __mips_isa_rev>=6
+	CPU=mipsisa32r6
+	#else
+	#if defined(__mips64)
+	CPU=mips64
+	#else
+	CPU=mips
+	#endif
+	#endif
+	#endif
+
+	#if defined(__MIPSEL__) || defined(__MIPSEL) || defined(_MIPSEL) || defined(MIPSEL)
+	MIPS_ENDIAN=el
+	#else
+	#if defined(__MIPSEB__) || defined(__MIPSEB) || defined(_MIPSEB) || defined(MIPSEB)
+	MIPS_ENDIAN=
+	#else
+	MIPS_ENDIAN=
+	#endif
+	#endif
+EOF
+	eval "$($CC_FOR_BUILD -E "$dummy.c" 2>/dev/null | grep '^CPU\|^MIPS_ENDIAN\|^LIBCABI')"
+	test "x$CPU" != x && { echo "$CPU${MIPS_ENDIAN}-unknown-linux-$LIBCABI"; exit; }
+	;;
+    mips64el:Linux:*:*)
+	echo "$UNAME_MACHINE"-unknown-linux-"$LIBC"
+	exit ;;
+    openrisc*:Linux:*:*)
+	echo or1k-unknown-linux-"$LIBC"
+	exit ;;
+    or32:Linux:*:* | or1k*:Linux:*:*)
+	echo "$UNAME_MACHINE"-unknown-linux-"$LIBC"
+	exit ;;
+    padre:Linux:*:*)
+	echo sparc-unknown-linux-"$LIBC"
+	exit ;;
+    parisc64:Linux:*:* | hppa64:Linux:*:*)
+	echo hppa64-unknown-linux-"$LIBC"
+	exit ;;
+    parisc:Linux:*:* | hppa:Linux:*:*)
+	# Look for CPU level
+	case $(grep '^cpu[^a-z]*:' /proc/cpuinfo 2>/dev/null | cut -d' ' -f2) in
+	  PA7*) echo hppa1.1-unknown-linux-"$LIBC" ;;
+	  PA8*) echo hppa2.0-unknown-linux-"$LIBC" ;;
+	  *)    echo hppa-unknown-linux-"$LIBC" ;;
+	esac
+	exit ;;
+    ppc64:Linux:*:*)
+	echo powerpc64-unknown-linux-"$LIBC"
+	exit ;;
+    ppc:Linux:*:*)
+	echo powerpc-unknown-linux-"$LIBC"
+	exit ;;
+    ppc64le:Linux:*:*)
+	echo powerpc64le-unknown-linux-"$LIBC"
+	exit ;;
+    ppcle:Linux:*:*)
+	echo powerpcle-unknown-linux-"$LIBC"
+	exit ;;
+    riscv32:Linux:*:* | riscv32be:Linux:*:* | riscv64:Linux:*:* | riscv64be:Linux:*:*)
+	echo "$UNAME_MACHINE"-unknown-linux-"$LIBC"
+	exit ;;
+    s390:Linux:*:* | s390x:Linux:*:*)
+	echo "$UNAME_MACHINE"-ibm-linux-"$LIBC"
+	exit ;;
+    sh64*:Linux:*:*)
+	echo "$UNAME_MACHINE"-unknown-linux-"$LIBC"
+	exit ;;
+    sh*:Linux:*:*)
+	echo "$UNAME_MACHINE"-unknown-linux-"$LIBC"
+	exit ;;
+    sparc:Linux:*:* | sparc64:Linux:*:*)
+	echo "$UNAME_MACHINE"-unknown-linux-"$LIBC"
+	exit ;;
+    tile*:Linux:*:*)
+	echo "$UNAME_MACHINE"-unknown-linux-"$LIBC"
+	exit ;;
+    vax:Linux:*:*)
+	echo "$UNAME_MACHINE"-dec-linux-"$LIBC"
+	exit ;;
+    x86_64:Linux:*:*)
+	set_cc_for_build
+	LIBCABI=$LIBC
+	if test "$CC_FOR_BUILD" != no_compiler_found; then
+	    if (echo '#ifdef __ILP32__'; echo IS_X32; echo '#endif') | \
+		(CCOPTS="" $CC_FOR_BUILD -E - 2>/dev/null) | \
+		grep IS_X32 >/dev/null
+	    then
+		LIBCABI="$LIBC"x32
+	    fi
+	fi
+	echo "$UNAME_MACHINE"-pc-linux-"$LIBCABI"
+	exit ;;
+    xtensa*:Linux:*:*)
+	echo "$UNAME_MACHINE"-unknown-linux-"$LIBC"
+	exit ;;
+    i*86:DYNIX/ptx:4*:*)
+	# ptx 4.0 does uname -s correctly, with DYNIX/ptx in there.
+	# earlier versions are messed up and put the nodename in both
+	# sysname and nodename.
+	echo i386-sequent-sysv4
+	exit ;;
+    i*86:UNIX_SV:4.2MP:2.*)
+	# Unixware is an offshoot of SVR4, but it has its own version
+	# number series starting with 2...
+	# I am not positive that other SVR4 systems won't match this,
+	# I just have to hope.  -- rms.
+	# Use sysv4.2uw... so that sysv4* matches it.
+	echo "$UNAME_MACHINE"-pc-sysv4.2uw"$UNAME_VERSION"
+	exit ;;
+    i*86:OS/2:*:*)
+	# If we were able to find `uname', then EMX Unix compatibility
+	# is probably installed.
+	echo "$UNAME_MACHINE"-pc-os2-emx
+	exit ;;
+    i*86:XTS-300:*:STOP)
+	echo "$UNAME_MACHINE"-unknown-stop
+	exit ;;
+    i*86:atheos:*:*)
+	echo "$UNAME_MACHINE"-unknown-atheos
+	exit ;;
+    i*86:syllable:*:*)
+	echo "$UNAME_MACHINE"-pc-syllable
+	exit ;;
+    i*86:LynxOS:2.*:* | i*86:LynxOS:3.[01]*:* | i*86:LynxOS:4.[02]*:*)
+	echo i386-unknown-lynxos"$UNAME_RELEASE"
+	exit ;;
+    i*86:*DOS:*:*)
+	echo "$UNAME_MACHINE"-pc-msdosdjgpp
+	exit ;;
+    i*86:*:4.*:*)
+	UNAME_REL=$(echo "$UNAME_RELEASE" | sed 's/\/MP$//')
+	if grep Novell /usr/include/link.h >/dev/null 2>/dev/null; then
+		echo "$UNAME_MACHINE"-univel-sysv"$UNAME_REL"
+	else
+		echo "$UNAME_MACHINE"-pc-sysv"$UNAME_REL"
+	fi
+	exit ;;
+    i*86:*:5:[678]*)
+	# UnixWare 7.x, OpenUNIX and OpenServer 6.
+	case $(/bin/uname -X | grep "^Machine") in
+	    *486*)	     UNAME_MACHINE=i486 ;;
+	    *Pentium)	     UNAME_MACHINE=i586 ;;
+	    *Pent*|*Celeron) UNAME_MACHINE=i686 ;;
+	esac
+	echo "$UNAME_MACHINE-unknown-sysv${UNAME_RELEASE}${UNAME_SYSTEM}${UNAME_VERSION}"
+	exit ;;
+    i*86:*:3.2:*)
+	if test -f /usr/options/cb.name; then
+		UNAME_REL=$(sed -n 's/.*Version //p' </usr/options/cb.name)
+		echo "$UNAME_MACHINE"-pc-isc"$UNAME_REL"
+	elif /bin/uname -X 2>/dev/null >/dev/null ; then
+		UNAME_REL=$( (/bin/uname -X|grep Release|sed -e 's/.*= //'))
+		(/bin/uname -X|grep i80486 >/dev/null) && UNAME_MACHINE=i486
+		(/bin/uname -X|grep '^Machine.*Pentium' >/dev/null) \
+			&& UNAME_MACHINE=i586
+		(/bin/uname -X|grep '^Machine.*Pent *II' >/dev/null) \
+			&& UNAME_MACHINE=i686
+		(/bin/uname -X|grep '^Machine.*Pentium Pro' >/dev/null) \
+			&& UNAME_MACHINE=i686
+		echo "$UNAME_MACHINE"-pc-sco"$UNAME_REL"
+	else
+		echo "$UNAME_MACHINE"-pc-sysv32
+	fi
+	exit ;;
+    pc:*:*:*)
+	# Left here for compatibility:
+	# uname -m prints for DJGPP always 'pc', but it prints nothing about
+	# the processor, so we play safe by assuming i586.
+	# Note: whatever this is, it MUST be the same as what config.sub
+	# prints for the "djgpp" host, or else GDB configure will decide that
+	# this is a cross-build.
+	echo i586-pc-msdosdjgpp
+	exit ;;
+    Intel:Mach:3*:*)
+	echo i386-pc-mach3
+	exit ;;
+    paragon:*:*:*)
+	echo i860-intel-osf1
+	exit ;;
+    i860:*:4.*:*) # i860-SVR4
+	if grep Stardent /usr/include/sys/uadmin.h >/dev/null 2>&1 ; then
+	  echo i860-stardent-sysv"$UNAME_RELEASE" # Stardent Vistra i860-SVR4
+	else # Add other i860-SVR4 vendors below as they are discovered.
+	  echo i860-unknown-sysv"$UNAME_RELEASE"  # Unknown i860-SVR4
+	fi
+	exit ;;
+    mini*:CTIX:SYS*5:*)
+	# "miniframe"
+	echo m68010-convergent-sysv
+	exit ;;
+    mc68k:UNIX:SYSTEM5:3.51m)
+	echo m68k-convergent-sysv
+	exit ;;
+    M680?0:D-NIX:5.3:*)
+	echo m68k-diab-dnix
+	exit ;;
+    M68*:*:R3V[5678]*:*)
+	test -r /sysV68 && { echo 'm68k-motorola-sysv'; exit; } ;;
+    3[345]??:*:4.0:3.0 | 3[34]??A:*:4.0:3.0 | 3[34]??,*:*:4.0:3.0 | 3[34]??/*:*:4.0:3.0 | 4400:*:4.0:3.0 | 4850:*:4.0:3.0 | SKA40:*:4.0:3.0 | SDS2:*:4.0:3.0 | SHG2:*:4.0:3.0 | S7501*:*:4.0:3.0)
+	OS_REL=''
+	test -r /etc/.relid \
+	&& OS_REL=.$(sed -n 's/[^ ]* [^ ]* \([0-9][0-9]\).*/\1/p' < /etc/.relid)
+	/bin/uname -p 2>/dev/null | grep 86 >/dev/null \
+	  && { echo i486-ncr-sysv4.3"$OS_REL"; exit; }
+	/bin/uname -p 2>/dev/null | /bin/grep entium >/dev/null \
+	  && { echo i586-ncr-sysv4.3"$OS_REL"; exit; } ;;
+    3[34]??:*:4.0:* | 3[34]??,*:*:4.0:*)
+	/bin/uname -p 2>/dev/null | grep 86 >/dev/null \
+	  && { echo i486-ncr-sysv4; exit; } ;;
+    NCR*:*:4.2:* | MPRAS*:*:4.2:*)
+	OS_REL='.3'
+	test -r /etc/.relid \
+	    && OS_REL=.$(sed -n 's/[^ ]* [^ ]* \([0-9][0-9]\).*/\1/p' < /etc/.relid)
+	/bin/uname -p 2>/dev/null | grep 86 >/dev/null \
+	    && { echo i486-ncr-sysv4.3"$OS_REL"; exit; }
+	/bin/uname -p 2>/dev/null | /bin/grep entium >/dev/null \
+	    && { echo i586-ncr-sysv4.3"$OS_REL"; exit; }
+	/bin/uname -p 2>/dev/null | /bin/grep pteron >/dev/null \
+	    && { echo i586-ncr-sysv4.3"$OS_REL"; exit; } ;;
+    m68*:LynxOS:2.*:* | m68*:LynxOS:3.0*:*)
+	echo m68k-unknown-lynxos"$UNAME_RELEASE"
+	exit ;;
+    mc68030:UNIX_System_V:4.*:*)
+	echo m68k-atari-sysv4
+	exit ;;
+    TSUNAMI:LynxOS:2.*:*)
+	echo sparc-unknown-lynxos"$UNAME_RELEASE"
+	exit ;;
+    rs6000:LynxOS:2.*:*)
+	echo rs6000-unknown-lynxos"$UNAME_RELEASE"
+	exit ;;
+    PowerPC:LynxOS:2.*:* | PowerPC:LynxOS:3.[01]*:* | PowerPC:LynxOS:4.[02]*:*)
+	echo powerpc-unknown-lynxos"$UNAME_RELEASE"
+	exit ;;
+    SM[BE]S:UNIX_SV:*:*)
+	echo mips-dde-sysv"$UNAME_RELEASE"
+	exit ;;
+    RM*:ReliantUNIX-*:*:*)
+	echo mips-sni-sysv4
+	exit ;;
+    RM*:SINIX-*:*:*)
+	echo mips-sni-sysv4
+	exit ;;
+    *:SINIX-*:*:*)
+	if uname -p 2>/dev/null >/dev/null ; then
+		UNAME_MACHINE=$( (uname -p) 2>/dev/null)
+		echo "$UNAME_MACHINE"-sni-sysv4
+	else
+		echo ns32k-sni-sysv
+	fi
+	exit ;;
+    PENTIUM:*:4.0*:*)	# Unisys `ClearPath HMP IX 4000' SVR4/MP effort
+			# says <Richard.M.Bartel@ccMail.Census.GOV>
+	echo i586-unisys-sysv4
+	exit ;;
+    *:UNIX_System_V:4*:FTX*)
+	# From Gerald Hewes <hewes@openmarket.com>.
+	# How about differentiating between stratus architectures? -djm
+	echo hppa1.1-stratus-sysv4
+	exit ;;
+    *:*:*:FTX*)
+	# From seanf@swdc.stratus.com.
+	echo i860-stratus-sysv4
+	exit ;;
+    i*86:VOS:*:*)
+	# From Paul.Green@stratus.com.
+	echo "$UNAME_MACHINE"-stratus-vos
+	exit ;;
+    *:VOS:*:*)
+	# From Paul.Green@stratus.com.
+	echo hppa1.1-stratus-vos
+	exit ;;
+    mc68*:A/UX:*:*)
+	echo m68k-apple-aux"$UNAME_RELEASE"
+	exit ;;
+    news*:NEWS-OS:6*:*)
+	echo mips-sony-newsos6
+	exit ;;
+    R[34]000:*System_V*:*:* | R4000:UNIX_SYSV:*:* | R*000:UNIX_SV:*:*)
+	if test -d /usr/nec; then
+		echo mips-nec-sysv"$UNAME_RELEASE"
+	else
+		echo mips-unknown-sysv"$UNAME_RELEASE"
+	fi
+	exit ;;
+    BeBox:BeOS:*:*)	# BeOS running on hardware made by Be, PPC only.
+	echo powerpc-be-beos
+	exit ;;
+    BeMac:BeOS:*:*)	# BeOS running on Mac or Mac clone, PPC only.
+	echo powerpc-apple-beos
+	exit ;;
+    BePC:BeOS:*:*)	# BeOS running on Intel PC compatible.
+	echo i586-pc-beos
+	exit ;;
+    BePC:Haiku:*:*)	# Haiku running on Intel PC compatible.
+	echo i586-pc-haiku
+	exit ;;
+    x86_64:Haiku:*:*)
+	echo x86_64-unknown-haiku
+	exit ;;
+    SX-4:SUPER-UX:*:*)
+	echo sx4-nec-superux"$UNAME_RELEASE"
+	exit ;;
+    SX-5:SUPER-UX:*:*)
+	echo sx5-nec-superux"$UNAME_RELEASE"
+	exit ;;
+    SX-6:SUPER-UX:*:*)
+	echo sx6-nec-superux"$UNAME_RELEASE"
+	exit ;;
+    SX-7:SUPER-UX:*:*)
+	echo sx7-nec-superux"$UNAME_RELEASE"
+	exit ;;
+    SX-8:SUPER-UX:*:*)
+	echo sx8-nec-superux"$UNAME_RELEASE"
+	exit ;;
+    SX-8R:SUPER-UX:*:*)
+	echo sx8r-nec-superux"$UNAME_RELEASE"
+	exit ;;
+    SX-ACE:SUPER-UX:*:*)
+	echo sxace-nec-superux"$UNAME_RELEASE"
+	exit ;;
+    Power*:Rhapsody:*:*)
+	echo powerpc-apple-rhapsody"$UNAME_RELEASE"
+	exit ;;
+    *:Rhapsody:*:*)
+	echo "$UNAME_MACHINE"-apple-rhapsody"$UNAME_RELEASE"
+	exit ;;
+    arm64:Darwin:*:*)
+	echo aarch64-apple-darwin"$UNAME_RELEASE"
+	exit ;;
+    *:Darwin:*:*)
+	UNAME_PROCESSOR=$(uname -p)
+	case $UNAME_PROCESSOR in
+	    unknown) UNAME_PROCESSOR=powerpc ;;
+	esac
+	if command -v xcode-select > /dev/null 2> /dev/null && \
+		! xcode-select --print-path > /dev/null 2> /dev/null ; then
+	    # Avoid executing cc if there is no toolchain installed as
+	    # cc will be a stub that puts up a graphical alert
+	    # prompting the user to install developer tools.
+	    CC_FOR_BUILD=no_compiler_found
+	else
+	    set_cc_for_build
+	fi
+	if test "$CC_FOR_BUILD" != no_compiler_found; then
+	    if (echo '#ifdef __LP64__'; echo IS_64BIT_ARCH; echo '#endif') | \
+		   (CCOPTS="" $CC_FOR_BUILD -E - 2>/dev/null) | \
+		   grep IS_64BIT_ARCH >/dev/null
+	    then
+		case $UNAME_PROCESSOR in
+		    i386) UNAME_PROCESSOR=x86_64 ;;
+		    powerpc) UNAME_PROCESSOR=powerpc64 ;;
+		esac
+	    fi
+	    # On 10.4-10.6 one might compile for PowerPC via gcc -arch ppc
+	    if (echo '#ifdef __POWERPC__'; echo IS_PPC; echo '#endif') | \
+		   (CCOPTS="" $CC_FOR_BUILD -E - 2>/dev/null) | \
+		   grep IS_PPC >/dev/null
+	    then
+		UNAME_PROCESSOR=powerpc
+	    fi
+	elif test "$UNAME_PROCESSOR" = i386 ; then
+	    # uname -m returns i386 or x86_64
+	    UNAME_PROCESSOR=$UNAME_MACHINE
+	fi
+	echo "$UNAME_PROCESSOR"-apple-darwin"$UNAME_RELEASE"
+	exit ;;
+    *:procnto*:*:* | *:QNX:[0123456789]*:*)
+	UNAME_PROCESSOR=$(uname -p)
+	if test "$UNAME_PROCESSOR" = x86; then
+		UNAME_PROCESSOR=i386
+		UNAME_MACHINE=pc
+	fi
+	echo "$UNAME_PROCESSOR"-"$UNAME_MACHINE"-nto-qnx"$UNAME_RELEASE"
+	exit ;;
+    *:QNX:*:4*)
+	echo i386-pc-qnx
+	exit ;;
+    NEO-*:NONSTOP_KERNEL:*:*)
+	echo neo-tandem-nsk"$UNAME_RELEASE"
+	exit ;;
+    NSE-*:NONSTOP_KERNEL:*:*)
+	echo nse-tandem-nsk"$UNAME_RELEASE"
+	exit ;;
+    NSR-*:NONSTOP_KERNEL:*:*)
+	echo nsr-tandem-nsk"$UNAME_RELEASE"
+	exit ;;
+    NSV-*:NONSTOP_KERNEL:*:*)
+	echo nsv-tandem-nsk"$UNAME_RELEASE"
+	exit ;;
+    NSX-*:NONSTOP_KERNEL:*:*)
+	echo nsx-tandem-nsk"$UNAME_RELEASE"
+	exit ;;
+    *:NonStop-UX:*:*)
+	echo mips-compaq-nonstopux
+	exit ;;
+    BS2000:POSIX*:*:*)
+	echo bs2000-siemens-sysv
+	exit ;;
+    DS/*:UNIX_System_V:*:*)
+	echo "$UNAME_MACHINE"-"$UNAME_SYSTEM"-"$UNAME_RELEASE"
+	exit ;;
+    *:Plan9:*:*)
+	# "uname -m" is not consistent, so use $cputype instead. 386
+	# is converted to i386 for consistency with other x86
+	# operating systems.
+	# shellcheck disable=SC2154
+	if test "$cputype" = 386; then
+	    UNAME_MACHINE=i386
+	else
+	    UNAME_MACHINE="$cputype"
+	fi
+	echo "$UNAME_MACHINE"-unknown-plan9
+	exit ;;
+    *:TOPS-10:*:*)
+	echo pdp10-unknown-tops10
+	exit ;;
+    *:TENEX:*:*)
+	echo pdp10-unknown-tenex
+	exit ;;
+    KS10:TOPS-20:*:* | KL10:TOPS-20:*:* | TYPE4:TOPS-20:*:*)
+	echo pdp10-dec-tops20
+	exit ;;
+    XKL-1:TOPS-20:*:* | TYPE5:TOPS-20:*:*)
+	echo pdp10-xkl-tops20
+	exit ;;
+    *:TOPS-20:*:*)
+	echo pdp10-unknown-tops20
+	exit ;;
+    *:ITS:*:*)
+	echo pdp10-unknown-its
+	exit ;;
+    SEI:*:*:SEIUX)
+	echo mips-sei-seiux"$UNAME_RELEASE"
+	exit ;;
+    *:DragonFly:*:*)
+	echo "$UNAME_MACHINE"-unknown-dragonfly"$(echo "$UNAME_RELEASE"|sed -e 's/[-(].*//')"
+	exit ;;
+    *:*VMS:*:*)
+	UNAME_MACHINE=$( (uname -p) 2>/dev/null)
+	case "$UNAME_MACHINE" in
+	    A*) echo alpha-dec-vms ; exit ;;
+	    I*) echo ia64-dec-vms ; exit ;;
+	    V*) echo vax-dec-vms ; exit ;;
+	esac ;;
+    *:XENIX:*:SysV)
+	echo i386-pc-xenix
+	exit ;;
+    i*86:skyos:*:*)
+	echo "$UNAME_MACHINE"-pc-skyos"$(echo "$UNAME_RELEASE" | sed -e 's/ .*$//')"
+	exit ;;
+    i*86:rdos:*:*)
+	echo "$UNAME_MACHINE"-pc-rdos
+	exit ;;
+    i*86:AROS:*:*)
+	echo "$UNAME_MACHINE"-pc-aros
+	exit ;;
+    x86_64:VMkernel:*:*)
+	echo "$UNAME_MACHINE"-unknown-esx
+	exit ;;
+    amd64:Isilon\ OneFS:*:*)
+	echo x86_64-unknown-onefs
+	exit ;;
+    *:Unleashed:*:*)
+	echo "$UNAME_MACHINE"-unknown-unleashed"$UNAME_RELEASE"
+	exit ;;
+esac
+
+# No uname command or uname output not recognized.
+set_cc_for_build
+cat > "$dummy.c" <<EOF
+#ifdef _SEQUENT_
+#include <sys/types.h>
+#include <sys/utsname.h>
+#endif
+#if defined(ultrix) || defined(_ultrix) || defined(__ultrix) || defined(__ultrix__)
+#if defined (vax) || defined (__vax) || defined (__vax__) || defined(mips) || defined(__mips) || defined(__mips__) || defined(MIPS) || defined(__MIPS__)
+#include <signal.h>
+#if defined(_SIZE_T_) || defined(SIGLOST)
+#include <sys/utsname.h>
+#endif
+#endif
+#endif
+main ()
+{
+#if defined (sony)
+#if defined (MIPSEB)
+  /* BFD wants "bsd" instead of "newsos".  Perhaps BFD should be changed,
+     I don't know....  */
+  printf ("mips-sony-bsd\n"); exit (0);
+#else
+#include <sys/param.h>
+  printf ("m68k-sony-newsos%s\n",
+#ifdef NEWSOS4
+  "4"
+#else
+  ""
+#endif
+  ); exit (0);
+#endif
+#endif
+
+#if defined (NeXT)
+#if !defined (__ARCHITECTURE__)
+#define __ARCHITECTURE__ "m68k"
+#endif
+  int version;
+  version=$( (hostinfo | sed -n 's/.*NeXT Mach \([0-9]*\).*/\1/p') 2>/dev/null);
+  if (version < 4)
+    printf ("%s-next-nextstep%d\n", __ARCHITECTURE__, version);
+  else
+    printf ("%s-next-openstep%d\n", __ARCHITECTURE__, version);
+  exit (0);
+#endif
+
+#if defined (MULTIMAX) || defined (n16)
+#if defined (UMAXV)
+  printf ("ns32k-encore-sysv\n"); exit (0);
+#else
+#if defined (CMU)
+  printf ("ns32k-encore-mach\n"); exit (0);
+#else
+  printf ("ns32k-encore-bsd\n"); exit (0);
+#endif
+#endif
+#endif
+
+#if defined (__386BSD__)
+  printf ("i386-pc-bsd\n"); exit (0);
+#endif
+
+#if defined (sequent)
+#if defined (i386)
+  printf ("i386-sequent-dynix\n"); exit (0);
+#endif
+#if defined (ns32000)
+  printf ("ns32k-sequent-dynix\n"); exit (0);
+#endif
+#endif
+
+#if defined (_SEQUENT_)
+  struct utsname un;
+
+  uname(&un);
+  if (strncmp(un.version, "V2", 2) == 0) {
+    printf ("i386-sequent-ptx2\n"); exit (0);
+  }
+  if (strncmp(un.version, "V1", 2) == 0) { /* XXX is V1 correct? */
+    printf ("i386-sequent-ptx1\n"); exit (0);
+  }
+  printf ("i386-sequent-ptx\n"); exit (0);
+#endif
+
+#if defined (vax)
+#if !defined (ultrix)
+#include <sys/param.h>
+#if defined (BSD)
+#if BSD == 43
+  printf ("vax-dec-bsd4.3\n"); exit (0);
+#else
+#if BSD == 199006
+  printf ("vax-dec-bsd4.3reno\n"); exit (0);
+#else
+  printf ("vax-dec-bsd\n"); exit (0);
+#endif
+#endif
+#else
+  printf ("vax-dec-bsd\n"); exit (0);
+#endif
+#else
+#if defined(_SIZE_T_) || defined(SIGLOST)
+  struct utsname un;
+  uname (&un);
+  printf ("vax-dec-ultrix%s\n", un.release); exit (0);
+#else
+  printf ("vax-dec-ultrix\n"); exit (0);
+#endif
+#endif
+#endif
+#if defined(ultrix) || defined(_ultrix) || defined(__ultrix) || defined(__ultrix__)
+#if defined(mips) || defined(__mips) || defined(__mips__) || defined(MIPS) || defined(__MIPS__)
+#if defined(_SIZE_T_) || defined(SIGLOST)
+  struct utsname *un;
+  uname (&un);
+  printf ("mips-dec-ultrix%s\n", un.release); exit (0);
+#else
+  printf ("mips-dec-ultrix\n"); exit (0);
+#endif
+#endif
+#endif
+
+#if defined (alliant) && defined (i860)
+  printf ("i860-alliant-bsd\n"); exit (0);
+#endif
+
+  exit (1);
+}
+EOF
+
+$CC_FOR_BUILD -o "$dummy" "$dummy.c" 2>/dev/null && SYSTEM_NAME=$($dummy) &&
+	{ echo "$SYSTEM_NAME"; exit; }
+
+# Apollos put the system type in the environment.
+test -d /usr/apollo && { echo "$ISP-apollo-$SYSTYPE"; exit; }
+
+echo "$0: unable to guess system type" >&2
+
+case "$UNAME_MACHINE:$UNAME_SYSTEM" in
+    mips:Linux | mips64:Linux)
+	# If we got here on MIPS GNU/Linux, output extra information.
+	cat >&2 <<EOF
+
+NOTE: MIPS GNU/Linux systems require a C compiler to fully recognize
+the system type. Please install a C compiler and try again.
+EOF
+	;;
+esac
+
+cat >&2 <<EOF
+
+This script (version $timestamp), has failed to recognize the
+operating system you are using. If your script is old, overwrite *all*
+copies of config.guess and config.sub with the latest versions from:
+
+  https://git.savannah.gnu.org/cgit/config.git/plain/config.guess
+and
+  https://git.savannah.gnu.org/cgit/config.git/plain/config.sub
+EOF
+
+year=$(echo $timestamp | sed 's,-.*,,')
+# shellcheck disable=SC2003
+if test "$(expr "$(date +%Y)" - "$year")" -lt 3 ; then
+   cat >&2 <<EOF
+
+If $0 has already been updated, send the following data and any
+information you think might be pertinent to config-patches@gnu.org to
+provide the necessary information to handle your system.
+
+config.guess timestamp = $timestamp
+
+uname -m = $( (uname -m) 2>/dev/null || echo unknown)
+uname -r = $( (uname -r) 2>/dev/null || echo unknown)
+uname -s = $( (uname -s) 2>/dev/null || echo unknown)
+uname -v = $( (uname -v) 2>/dev/null || echo unknown)
+
+/usr/bin/uname -p = $( (/usr/bin/uname -p) 2>/dev/null)
+/bin/uname -X     = $( (/bin/uname -X) 2>/dev/null)
+
+hostinfo               = $( (hostinfo) 2>/dev/null)
+/bin/universe          = $( (/bin/universe) 2>/dev/null)
+/usr/bin/arch -k       = $( (/usr/bin/arch -k) 2>/dev/null)
+/bin/arch              = $( (/bin/arch) 2>/dev/null)
+/usr/bin/oslevel       = $( (/usr/bin/oslevel) 2>/dev/null)
+/usr/convex/getsysinfo = $( (/usr/convex/getsysinfo) 2>/dev/null)
+
+UNAME_MACHINE = "$UNAME_MACHINE"
+UNAME_RELEASE = "$UNAME_RELEASE"
+UNAME_SYSTEM  = "$UNAME_SYSTEM"
+UNAME_VERSION = "$UNAME_VERSION"
+EOF
+fi
+
+exit 1
+
+# Local variables:
+# eval: (add-hook 'before-save-hook 'time-stamp)
+# time-stamp-start: "timestamp='"
+# time-stamp-format: "%:y-%02m-%02d"
+# time-stamp-end: "'"
+# End:
diff --git a/deps/jemalloc/build-aux/config.sub b/deps/jemalloc/build-aux/config.sub
new file mode 100755
index 0000000..b0f8492
--- /dev/null
+++ b/deps/jemalloc/build-aux/config.sub
@@ -0,0 +1,1855 @@
+#! /bin/sh
+# Configuration validation subroutine script.
+#   Copyright 1992-2021 Free Software Foundation, Inc.
+
+timestamp='2021-01-07'
+
+# This file is free software; you can redistribute it and/or modify it
+# under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful, but
+# WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+# General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, see <https://www.gnu.org/licenses/>.
+#
+# As a special exception to the GNU General Public License, if you
+# distribute this file as part of a program that contains a
+# configuration script generated by Autoconf, you may include it under
+# the same distribution terms that you use for the rest of that
+# program.  This Exception is an additional permission under section 7
+# of the GNU General Public License, version 3 ("GPLv3").
+
+
+# Please send patches to <config-patches@gnu.org>.
+#
+# Configuration subroutine to validate and canonicalize a configuration type.
+# Supply the specified configuration type as an argument.
+# If it is invalid, we print an error message on stderr and exit with code 1.
+# Otherwise, we print the canonical config type on stdout and succeed.
+
+# You can get the latest version of this script from:
+# https://git.savannah.gnu.org/cgit/config.git/plain/config.sub
+
+# This file is supposed to be the same for all GNU packages
+# and recognize all the CPU types, system types and aliases
+# that are meaningful with *any* GNU software.
+# Each package is responsible for reporting which valid configurations
+# it does not support.  The user should be able to distinguish
+# a failure to support a valid configuration from a meaningless
+# configuration.
+
+# The goal of this file is to map all the various variations of a given
+# machine specification into a single specification in the form:
+#	CPU_TYPE-MANUFACTURER-OPERATING_SYSTEM
+# or in some cases, the newer four-part form:
+#	CPU_TYPE-MANUFACTURER-KERNEL-OPERATING_SYSTEM
+# It is wrong to echo any other type of specification.
+
+me=$(echo "$0" | sed -e 's,.*/,,')
+
+usage="\
+Usage: $0 [OPTION] CPU-MFR-OPSYS or ALIAS
+
+Canonicalize a configuration name.
+
+Options:
+  -h, --help         print this help, then exit
+  -t, --time-stamp   print date of last modification, then exit
+  -v, --version      print version number, then exit
+
+Report bugs and patches to <config-patches@gnu.org>."
+
+version="\
+GNU config.sub ($timestamp)
+
+Copyright 1992-2021 Free Software Foundation, Inc.
+
+This is free software; see the source for copying conditions.  There is NO
+warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE."
+
+help="
+Try \`$me --help' for more information."
+
+# Parse command line
+while test $# -gt 0 ; do
+  case $1 in
+    --time-stamp | --time* | -t )
+       echo "$timestamp" ; exit ;;
+    --version | -v )
+       echo "$version" ; exit ;;
+    --help | --h* | -h )
+       echo "$usage"; exit ;;
+    -- )     # Stop option processing
+       shift; break ;;
+    - )	# Use stdin as input.
+       break ;;
+    -* )
+       echo "$me: invalid option $1$help" >&2
+       exit 1 ;;
+
+    *local*)
+       # First pass through any local machine types.
+       echo "$1"
+       exit ;;
+
+    * )
+       break ;;
+  esac
+done
+
+case $# in
+ 0) echo "$me: missing argument$help" >&2
+    exit 1;;
+ 1) ;;
+ *) echo "$me: too many arguments$help" >&2
+    exit 1;;
+esac
+
+# Split fields of configuration type
+# shellcheck disable=SC2162
+IFS="-" read field1 field2 field3 field4 <<EOF
+$1
+EOF
+
+# Separate into logical components for further validation
+case $1 in
+	*-*-*-*-*)
+		echo Invalid configuration \`"$1"\': more than four components >&2
+		exit 1
+		;;
+	*-*-*-*)
+		basic_machine=$field1-$field2
+		basic_os=$field3-$field4
+		;;
+	*-*-*)
+		# Ambiguous whether COMPANY is present, or skipped and KERNEL-OS is two
+		# parts
+		maybe_os=$field2-$field3
+		case $maybe_os in
+			nto-qnx* | linux-* | uclinux-uclibc* \
+			| uclinux-gnu* | kfreebsd*-gnu* | knetbsd*-gnu* | netbsd*-gnu* \
+			| netbsd*-eabi* | kopensolaris*-gnu* | cloudabi*-eabi* \
+			| storm-chaos* | os2-emx* | rtmk-nova*)
+				basic_machine=$field1
+				basic_os=$maybe_os
+				;;
+			android-linux)
+				basic_machine=$field1-unknown
+				basic_os=linux-android
+				;;
+			*)
+				basic_machine=$field1-$field2
+				basic_os=$field3
+				;;
+		esac
+		;;
+	*-*)
+		# A lone config we happen to match not fitting any pattern
+		case $field1-$field2 in
+			decstation-3100)
+				basic_machine=mips-dec
+				basic_os=
+				;;
+			*-*)
+				# Second component is usually, but not always the OS
+				case $field2 in
+					# Prevent following clause from handling this valid os
+					sun*os*)
+						basic_machine=$field1
+						basic_os=$field2
+						;;
+					# Manufacturers
+					dec* | mips* | sequent* | encore* | pc533* | sgi* | sony* \
+					| att* | 7300* | 3300* | delta* | motorola* | sun[234]* \
+					| unicom* | ibm* | next | hp | isi* | apollo | altos* \
+					| convergent* | ncr* | news | 32* | 3600* | 3100* \
+					| hitachi* | c[123]* | convex* | sun | crds | omron* | dg \
+					| ultra | tti* | harris | dolphin | highlevel | gould \
+					| cbm | ns | masscomp | apple | axis | knuth | cray \
+					| microblaze* | sim | cisco \
+					| oki | wec | wrs | winbond)
+						basic_machine=$field1-$field2
+						basic_os=
+						;;
+					*)
+						basic_machine=$field1
+						basic_os=$field2
+						;;
+				esac
+			;;
+		esac
+		;;
+	*)
+		# Convert single-component short-hands not valid as part of
+		# multi-component configurations.
+		case $field1 in
+			386bsd)
+				basic_machine=i386-pc
+				basic_os=bsd
+				;;
+			a29khif)
+				basic_machine=a29k-amd
+				basic_os=udi
+				;;
+			adobe68k)
+				basic_machine=m68010-adobe
+				basic_os=scout
+				;;
+			alliant)
+				basic_machine=fx80-alliant
+				basic_os=
+				;;
+			altos | altos3068)
+				basic_machine=m68k-altos
+				basic_os=
+				;;
+			am29k)
+				basic_machine=a29k-none
+				basic_os=bsd
+				;;
+			amdahl)
+				basic_machine=580-amdahl
+				basic_os=sysv
+				;;
+			amiga)
+				basic_machine=m68k-unknown
+				basic_os=
+				;;
+			amigaos | amigados)
+				basic_machine=m68k-unknown
+				basic_os=amigaos
+				;;
+			amigaunix | amix)
+				basic_machine=m68k-unknown
+				basic_os=sysv4
+				;;
+			apollo68)
+				basic_machine=m68k-apollo
+				basic_os=sysv
+				;;
+			apollo68bsd)
+				basic_machine=m68k-apollo
+				basic_os=bsd
+				;;
+			aros)
+				basic_machine=i386-pc
+				basic_os=aros
+				;;
+			aux)
+				basic_machine=m68k-apple
+				basic_os=aux
+				;;
+			balance)
+				basic_machine=ns32k-sequent
+				basic_os=dynix
+				;;
+			blackfin)
+				basic_machine=bfin-unknown
+				basic_os=linux
+				;;
+			cegcc)
+				basic_machine=arm-unknown
+				basic_os=cegcc
+				;;
+			convex-c1)
+				basic_machine=c1-convex
+				basic_os=bsd
+				;;
+			convex-c2)
+				basic_machine=c2-convex
+				basic_os=bsd
+				;;
+			convex-c32)
+				basic_machine=c32-convex
+				basic_os=bsd
+				;;
+			convex-c34)
+				basic_machine=c34-convex
+				basic_os=bsd
+				;;
+			convex-c38)
+				basic_machine=c38-convex
+				basic_os=bsd
+				;;
+			cray)
+				basic_machine=j90-cray
+				basic_os=unicos
+				;;
+			crds | unos)
+				basic_machine=m68k-crds
+				basic_os=
+				;;
+			da30)
+				basic_machine=m68k-da30
+				basic_os=
+				;;
+			decstation | pmax | pmin | dec3100 | decstatn)
+				basic_machine=mips-dec
+				basic_os=
+				;;
+			delta88)
+				basic_machine=m88k-motorola
+				basic_os=sysv3
+				;;
+			dicos)
+				basic_machine=i686-pc
+				basic_os=dicos
+				;;
+			djgpp)
+				basic_machine=i586-pc
+				basic_os=msdosdjgpp
+				;;
+			ebmon29k)
+				basic_machine=a29k-amd
+				basic_os=ebmon
+				;;
+			es1800 | OSE68k | ose68k | ose | OSE)
+				basic_machine=m68k-ericsson
+				basic_os=ose
+				;;
+			gmicro)
+				basic_machine=tron-gmicro
+				basic_os=sysv
+				;;
+			go32)
+				basic_machine=i386-pc
+				basic_os=go32
+				;;
+			h8300hms)
+				basic_machine=h8300-hitachi
+				basic_os=hms
+				;;
+			h8300xray)
+				basic_machine=h8300-hitachi
+				basic_os=xray
+				;;
+			h8500hms)
+				basic_machine=h8500-hitachi
+				basic_os=hms
+				;;
+			harris)
+				basic_machine=m88k-harris
+				basic_os=sysv3
+				;;
+			hp300 | hp300hpux)
+				basic_machine=m68k-hp
+				basic_os=hpux
+				;;
+			hp300bsd)
+				basic_machine=m68k-hp
+				basic_os=bsd
+				;;
+			hppaosf)
+				basic_machine=hppa1.1-hp
+				basic_os=osf
+				;;
+			hppro)
+				basic_machine=hppa1.1-hp
+				basic_os=proelf
+				;;
+			i386mach)
+				basic_machine=i386-mach
+				basic_os=mach
+				;;
+			isi68 | isi)
+				basic_machine=m68k-isi
+				basic_os=sysv
+				;;
+			m68knommu)
+				basic_machine=m68k-unknown
+				basic_os=linux
+				;;
+			magnum | m3230)
+				basic_machine=mips-mips
+				basic_os=sysv
+				;;
+			merlin)
+				basic_machine=ns32k-utek
+				basic_os=sysv
+				;;
+			mingw64)
+				basic_machine=x86_64-pc
+				basic_os=mingw64
+				;;
+			mingw32)
+				basic_machine=i686-pc
+				basic_os=mingw32
+				;;
+			mingw32ce)
+				basic_machine=arm-unknown
+				basic_os=mingw32ce
+				;;
+			monitor)
+				basic_machine=m68k-rom68k
+				basic_os=coff
+				;;
+			morphos)
+				basic_machine=powerpc-unknown
+				basic_os=morphos
+				;;
+			moxiebox)
+				basic_machine=moxie-unknown
+				basic_os=moxiebox
+				;;
+			msdos)
+				basic_machine=i386-pc
+				basic_os=msdos
+				;;
+			msys)
+				basic_machine=i686-pc
+				basic_os=msys
+				;;
+			mvs)
+				basic_machine=i370-ibm
+				basic_os=mvs
+				;;
+			nacl)
+				basic_machine=le32-unknown
+				basic_os=nacl
+				;;
+			ncr3000)
+				basic_machine=i486-ncr
+				basic_os=sysv4
+				;;
+			netbsd386)
+				basic_machine=i386-pc
+				basic_os=netbsd
+				;;
+			netwinder)
+				basic_machine=armv4l-rebel
+				basic_os=linux
+				;;
+			news | news700 | news800 | news900)
+				basic_machine=m68k-sony
+				basic_os=newsos
+				;;
+			news1000)
+				basic_machine=m68030-sony
+				basic_os=newsos
+				;;
+			necv70)
+				basic_machine=v70-nec
+				basic_os=sysv
+				;;
+			nh3000)
+				basic_machine=m68k-harris
+				basic_os=cxux
+				;;
+			nh[45]000)
+				basic_machine=m88k-harris
+				basic_os=cxux
+				;;
+			nindy960)
+				basic_machine=i960-intel
+				basic_os=nindy
+				;;
+			mon960)
+				basic_machine=i960-intel
+				basic_os=mon960
+				;;
+			nonstopux)
+				basic_machine=mips-compaq
+				basic_os=nonstopux
+				;;
+			os400)
+				basic_machine=powerpc-ibm
+				basic_os=os400
+				;;
+			OSE68000 | ose68000)
+				basic_machine=m68000-ericsson
+				basic_os=ose
+				;;
+			os68k)
+				basic_machine=m68k-none
+				basic_os=os68k
+				;;
+			paragon)
+				basic_machine=i860-intel
+				basic_os=osf
+				;;
+			parisc)
+				basic_machine=hppa-unknown
+				basic_os=linux
+				;;
+			psp)
+				basic_machine=mipsallegrexel-sony
+				basic_os=psp
+				;;
+			pw32)
+				basic_machine=i586-unknown
+				basic_os=pw32
+				;;
+			rdos | rdos64)
+				basic_machine=x86_64-pc
+				basic_os=rdos
+				;;
+			rdos32)
+				basic_machine=i386-pc
+				basic_os=rdos
+				;;
+			rom68k)
+				basic_machine=m68k-rom68k
+				basic_os=coff
+				;;
+			sa29200)
+				basic_machine=a29k-amd
+				basic_os=udi
+				;;
+			sei)
+				basic_machine=mips-sei
+				basic_os=seiux
+				;;
+			sequent)
+				basic_machine=i386-sequent
+				basic_os=
+				;;
+			sps7)
+				basic_machine=m68k-bull
+				basic_os=sysv2
+				;;
+			st2000)
+				basic_machine=m68k-tandem
+				basic_os=
+				;;
+			stratus)
+				basic_machine=i860-stratus
+				basic_os=sysv4
+				;;
+			sun2)
+				basic_machine=m68000-sun
+				basic_os=
+				;;
+			sun2os3)
+				basic_machine=m68000-sun
+				basic_os=sunos3
+				;;
+			sun2os4)
+				basic_machine=m68000-sun
+				basic_os=sunos4
+				;;
+			sun3)
+				basic_machine=m68k-sun
+				basic_os=
+				;;
+			sun3os3)
+				basic_machine=m68k-sun
+				basic_os=sunos3
+				;;
+			sun3os4)
+				basic_machine=m68k-sun
+				basic_os=sunos4
+				;;
+			sun4)
+				basic_machine=sparc-sun
+				basic_os=
+				;;
+			sun4os3)
+				basic_machine=sparc-sun
+				basic_os=sunos3
+				;;
+			sun4os4)
+				basic_machine=sparc-sun
+				basic_os=sunos4
+				;;
+			sun4sol2)
+				basic_machine=sparc-sun
+				basic_os=solaris2
+				;;
+			sun386 | sun386i | roadrunner)
+				basic_machine=i386-sun
+				basic_os=
+				;;
+			sv1)
+				basic_machine=sv1-cray
+				basic_os=unicos
+				;;
+			symmetry)
+				basic_machine=i386-sequent
+				basic_os=dynix
+				;;
+			t3e)
+				basic_machine=alphaev5-cray
+				basic_os=unicos
+				;;
+			t90)
+				basic_machine=t90-cray
+				basic_os=unicos
+				;;
+			toad1)
+				basic_machine=pdp10-xkl
+				basic_os=tops20
+				;;
+			tpf)
+				basic_machine=s390x-ibm
+				basic_os=tpf
+				;;
+			udi29k)
+				basic_machine=a29k-amd
+				basic_os=udi
+				;;
+			ultra3)
+				basic_machine=a29k-nyu
+				basic_os=sym1
+				;;
+			v810 | necv810)
+				basic_machine=v810-nec
+				basic_os=none
+				;;
+			vaxv)
+				basic_machine=vax-dec
+				basic_os=sysv
+				;;
+			vms)
+				basic_machine=vax-dec
+				basic_os=vms
+				;;
+			vsta)
+				basic_machine=i386-pc
+				basic_os=vsta
+				;;
+			vxworks960)
+				basic_machine=i960-wrs
+				basic_os=vxworks
+				;;
+			vxworks68)
+				basic_machine=m68k-wrs
+				basic_os=vxworks
+				;;
+			vxworks29k)
+				basic_machine=a29k-wrs
+				basic_os=vxworks
+				;;
+			xbox)
+				basic_machine=i686-pc
+				basic_os=mingw32
+				;;
+			ymp)
+				basic_machine=ymp-cray
+				basic_os=unicos
+				;;
+			*)
+				basic_machine=$1
+				basic_os=
+				;;
+		esac
+		;;
+esac
+
+# Decode 1-component or ad-hoc basic machines
+case $basic_machine in
+	# Here we handle the default manufacturer of certain CPU types.  It is in
+	# some cases the only manufacturer, in others, it is the most popular.
+	w89k)
+		cpu=hppa1.1
+		vendor=winbond
+		;;
+	op50n)
+		cpu=hppa1.1
+		vendor=oki
+		;;
+	op60c)
+		cpu=hppa1.1
+		vendor=oki
+		;;
+	ibm*)
+		cpu=i370
+		vendor=ibm
+		;;
+	orion105)
+		cpu=clipper
+		vendor=highlevel
+		;;
+	mac | mpw | mac-mpw)
+		cpu=m68k
+		vendor=apple
+		;;
+	pmac | pmac-mpw)
+		cpu=powerpc
+		vendor=apple
+		;;
+
+	# Recognize the various machine names and aliases which stand
+	# for a CPU type and a company and sometimes even an OS.
+	3b1 | 7300 | 7300-att | att-7300 | pc7300 | safari | unixpc)
+		cpu=m68000
+		vendor=att
+		;;
+	3b*)
+		cpu=we32k
+		vendor=att
+		;;
+	bluegene*)
+		cpu=powerpc
+		vendor=ibm
+		basic_os=cnk
+		;;
+	decsystem10* | dec10*)
+		cpu=pdp10
+		vendor=dec
+		basic_os=tops10
+		;;
+	decsystem20* | dec20*)
+		cpu=pdp10
+		vendor=dec
+		basic_os=tops20
+		;;
+	delta | 3300 | motorola-3300 | motorola-delta \
+	      | 3300-motorola | delta-motorola)
+		cpu=m68k
+		vendor=motorola
+		;;
+	dpx2*)
+		cpu=m68k
+		vendor=bull
+		basic_os=sysv3
+		;;
+	encore | umax | mmax)
+		cpu=ns32k
+		vendor=encore
+		;;
+	elxsi)
+		cpu=elxsi
+		vendor=elxsi
+		basic_os=${basic_os:-bsd}
+		;;
+	fx2800)
+		cpu=i860
+		vendor=alliant
+		;;
+	genix)
+		cpu=ns32k
+		vendor=ns
+		;;
+	h3050r* | hiux*)
+		cpu=hppa1.1
+		vendor=hitachi
+		basic_os=hiuxwe2
+		;;
+	hp3k9[0-9][0-9] | hp9[0-9][0-9])
+		cpu=hppa1.0
+		vendor=hp
+		;;
+	hp9k2[0-9][0-9] | hp9k31[0-9])
+		cpu=m68000
+		vendor=hp
+		;;
+	hp9k3[2-9][0-9])
+		cpu=m68k
+		vendor=hp
+		;;
+	hp9k6[0-9][0-9] | hp6[0-9][0-9])
+		cpu=hppa1.0
+		vendor=hp
+		;;
+	hp9k7[0-79][0-9] | hp7[0-79][0-9])
+		cpu=hppa1.1
+		vendor=hp
+		;;
+	hp9k78[0-9] | hp78[0-9])
+		# FIXME: really hppa2.0-hp
+		cpu=hppa1.1
+		vendor=hp
+		;;
+	hp9k8[67]1 | hp8[67]1 | hp9k80[24] | hp80[24] | hp9k8[78]9 | hp8[78]9 | hp9k893 | hp893)
+		# FIXME: really hppa2.0-hp
+		cpu=hppa1.1
+		vendor=hp
+		;;
+	hp9k8[0-9][13679] | hp8[0-9][13679])
+		cpu=hppa1.1
+		vendor=hp
+		;;
+	hp9k8[0-9][0-9] | hp8[0-9][0-9])
+		cpu=hppa1.0
+		vendor=hp
+		;;
+	i*86v32)
+		cpu=$(echo "$1" | sed -e 's/86.*/86/')
+		vendor=pc
+		basic_os=sysv32
+		;;
+	i*86v4*)
+		cpu=$(echo "$1" | sed -e 's/86.*/86/')
+		vendor=pc
+		basic_os=sysv4
+		;;
+	i*86v)
+		cpu=$(echo "$1" | sed -e 's/86.*/86/')
+		vendor=pc
+		basic_os=sysv
+		;;
+	i*86sol2)
+		cpu=$(echo "$1" | sed -e 's/86.*/86/')
+		vendor=pc
+		basic_os=solaris2
+		;;
+	j90 | j90-cray)
+		cpu=j90
+		vendor=cray
+		basic_os=${basic_os:-unicos}
+		;;
+	iris | iris4d)
+		cpu=mips
+		vendor=sgi
+		case $basic_os in
+		    irix*)
+			;;
+		    *)
+			basic_os=irix4
+			;;
+		esac
+		;;
+	miniframe)
+		cpu=m68000
+		vendor=convergent
+		;;
+	*mint | mint[0-9]* | *MiNT | *MiNT[0-9]*)
+		cpu=m68k
+		vendor=atari
+		basic_os=mint
+		;;
+	news-3600 | risc-news)
+		cpu=mips
+		vendor=sony
+		basic_os=newsos
+		;;
+	next | m*-next)
+		cpu=m68k
+		vendor=next
+		case $basic_os in
+		    openstep*)
+		        ;;
+		    nextstep*)
+			;;
+		    ns2*)
+		      basic_os=nextstep2
+			;;
+		    *)
+		      basic_os=nextstep3
+			;;
+		esac
+		;;
+	np1)
+		cpu=np1
+		vendor=gould
+		;;
+	op50n-* | op60c-*)
+		cpu=hppa1.1
+		vendor=oki
+		basic_os=proelf
+		;;
+	pa-hitachi)
+		cpu=hppa1.1
+		vendor=hitachi
+		basic_os=hiuxwe2
+		;;
+	pbd)
+		cpu=sparc
+		vendor=tti
+		;;
+	pbb)
+		cpu=m68k
+		vendor=tti
+		;;
+	pc532)
+		cpu=ns32k
+		vendor=pc532
+		;;
+	pn)
+		cpu=pn
+		vendor=gould
+		;;
+	power)
+		cpu=power
+		vendor=ibm
+		;;
+	ps2)
+		cpu=i386
+		vendor=ibm
+		;;
+	rm[46]00)
+		cpu=mips
+		vendor=siemens
+		;;
+	rtpc | rtpc-*)
+		cpu=romp
+		vendor=ibm
+		;;
+	sde)
+		cpu=mipsisa32
+		vendor=sde
+		basic_os=${basic_os:-elf}
+		;;
+	simso-wrs)
+		cpu=sparclite
+		vendor=wrs
+		basic_os=vxworks
+		;;
+	tower | tower-32)
+		cpu=m68k
+		vendor=ncr
+		;;
+	vpp*|vx|vx-*)
+		cpu=f301
+		vendor=fujitsu
+		;;
+	w65)
+		cpu=w65
+		vendor=wdc
+		;;
+	w89k-*)
+		cpu=hppa1.1
+		vendor=winbond
+		basic_os=proelf
+		;;
+	none)
+		cpu=none
+		vendor=none
+		;;
+	leon|leon[3-9])
+		cpu=sparc
+		vendor=$basic_machine
+		;;
+	leon-*|leon[3-9]-*)
+		cpu=sparc
+		vendor=$(echo "$basic_machine" | sed 's/-.*//')
+		;;
+
+	*-*)
+		# shellcheck disable=SC2162
+		IFS="-" read cpu vendor <<EOF
+$basic_machine
+EOF
+		;;
+	# We use `pc' rather than `unknown'
+	# because (1) that's what they normally are, and
+	# (2) the word "unknown" tends to confuse beginning users.
+	i*86 | x86_64)
+		cpu=$basic_machine
+		vendor=pc
+		;;
+	# These rules are duplicated from below for sake of the special case above;
+	# i.e. things that normalized to x86 arches should also default to "pc"
+	pc98)
+		cpu=i386
+		vendor=pc
+		;;
+	x64 | amd64)
+		cpu=x86_64
+		vendor=pc
+		;;
+	# Recognize the basic CPU types without company name.
+	*)
+		cpu=$basic_machine
+		vendor=unknown
+		;;
+esac
+
+unset -v basic_machine
+
+# Decode basic machines in the full and proper CPU-Company form.
+case $cpu-$vendor in
+	# Here we handle the default manufacturer of certain CPU types in canonical form. It is in
+	# some cases the only manufacturer, in others, it is the most popular.
+	craynv-unknown)
+		vendor=cray
+		basic_os=${basic_os:-unicosmp}
+		;;
+	c90-unknown | c90-cray)
+		vendor=cray
+		basic_os=${Basic_os:-unicos}
+		;;
+	fx80-unknown)
+		vendor=alliant
+		;;
+	romp-unknown)
+		vendor=ibm
+		;;
+	mmix-unknown)
+		vendor=knuth
+		;;
+	microblaze-unknown | microblazeel-unknown)
+		vendor=xilinx
+		;;
+	rs6000-unknown)
+		vendor=ibm
+		;;
+	vax-unknown)
+		vendor=dec
+		;;
+	pdp11-unknown)
+		vendor=dec
+		;;
+	we32k-unknown)
+		vendor=att
+		;;
+	cydra-unknown)
+		vendor=cydrome
+		;;
+	i370-ibm*)
+		vendor=ibm
+		;;
+	orion-unknown)
+		vendor=highlevel
+		;;
+	xps-unknown | xps100-unknown)
+		cpu=xps100
+		vendor=honeywell
+		;;
+
+	# Here we normalize CPU types with a missing or matching vendor
+	dpx20-unknown | dpx20-bull)
+		cpu=rs6000
+		vendor=bull
+		basic_os=${basic_os:-bosx}
+		;;
+
+	# Here we normalize CPU types irrespective of the vendor
+	amd64-*)
+		cpu=x86_64
+		;;
+	blackfin-*)
+		cpu=bfin
+		basic_os=linux
+		;;
+	c54x-*)
+		cpu=tic54x
+		;;
+	c55x-*)
+		cpu=tic55x
+		;;
+	c6x-*)
+		cpu=tic6x
+		;;
+	e500v[12]-*)
+		cpu=powerpc
+		basic_os=${basic_os}"spe"
+		;;
+	mips3*-*)
+		cpu=mips64
+		;;
+	ms1-*)
+		cpu=mt
+		;;
+	m68knommu-*)
+		cpu=m68k
+		basic_os=linux
+		;;
+	m9s12z-* | m68hcs12z-* | hcs12z-* | s12z-*)
+		cpu=s12z
+		;;
+	openrisc-*)
+		cpu=or32
+		;;
+	parisc-*)
+		cpu=hppa
+		basic_os=linux
+		;;
+	pentium-* | p5-* | k5-* | k6-* | nexgen-* | viac3-*)
+		cpu=i586
+		;;
+	pentiumpro-* | p6-* | 6x86-* | athlon-* | athalon_*-*)
+		cpu=i686
+		;;
+	pentiumii-* | pentium2-* | pentiumiii-* | pentium3-*)
+		cpu=i686
+		;;
+	pentium4-*)
+		cpu=i786
+		;;
+	pc98-*)
+		cpu=i386
+		;;
+	ppc-* | ppcbe-*)
+		cpu=powerpc
+		;;
+	ppcle-* | powerpclittle-*)
+		cpu=powerpcle
+		;;
+	ppc64-*)
+		cpu=powerpc64
+		;;
+	ppc64le-* | powerpc64little-*)
+		cpu=powerpc64le
+		;;
+	sb1-*)
+		cpu=mipsisa64sb1
+		;;
+	sb1el-*)
+		cpu=mipsisa64sb1el
+		;;
+	sh5e[lb]-*)
+		cpu=$(echo "$cpu" | sed 's/^\(sh.\)e\(.\)$/\1\2e/')
+		;;
+	spur-*)
+		cpu=spur
+		;;
+	strongarm-* | thumb-*)
+		cpu=arm
+		;;
+	tx39-*)
+		cpu=mipstx39
+		;;
+	tx39el-*)
+		cpu=mipstx39el
+		;;
+	x64-*)
+		cpu=x86_64
+		;;
+	xscale-* | xscalee[bl]-*)
+		cpu=$(echo "$cpu" | sed 's/^xscale/arm/')
+		;;
+	arm64-*)
+		cpu=aarch64
+		;;
+
+	# Recognize the canonical CPU Types that limit and/or modify the
+	# company names they are paired with.
+	cr16-*)
+		basic_os=${basic_os:-elf}
+		;;
+	crisv32-* | etraxfs*-*)
+		cpu=crisv32
+		vendor=axis
+		;;
+	cris-* | etrax*-*)
+		cpu=cris
+		vendor=axis
+		;;
+	crx-*)
+		basic_os=${basic_os:-elf}
+		;;
+	neo-tandem)
+		cpu=neo
+		vendor=tandem
+		;;
+	nse-tandem)
+		cpu=nse
+		vendor=tandem
+		;;
+	nsr-tandem)
+		cpu=nsr
+		vendor=tandem
+		;;
+	nsv-tandem)
+		cpu=nsv
+		vendor=tandem
+		;;
+	nsx-tandem)
+		cpu=nsx
+		vendor=tandem
+		;;
+	mipsallegrexel-sony)
+		cpu=mipsallegrexel
+		vendor=sony
+		;;
+	tile*-*)
+		basic_os=${basic_os:-linux-gnu}
+		;;
+
+	*)
+		# Recognize the canonical CPU types that are allowed with any
+		# company name.
+		case $cpu in
+			1750a | 580 \
+			| a29k \
+			| aarch64 | aarch64_be \
+			| abacus \
+			| alpha | alphaev[4-8] | alphaev56 | alphaev6[78] \
+			| alpha64 | alpha64ev[4-8] | alpha64ev56 | alpha64ev6[78] \
+			| alphapca5[67] | alpha64pca5[67] \
+			| am33_2.0 \
+			| amdgcn \
+			| arc | arceb \
+			| arm | arm[lb]e | arme[lb] | armv* \
+			| avr | avr32 \
+			| asmjs \
+			| ba \
+			| be32 | be64 \
+			| bfin | bpf | bs2000 \
+			| c[123]* | c30 | [cjt]90 | c4x \
+			| c8051 | clipper | craynv | csky | cydra \
+			| d10v | d30v | dlx | dsp16xx \
+			| e2k | elxsi | epiphany \
+			| f30[01] | f700 | fido | fr30 | frv | ft32 | fx80 \
+			| h8300 | h8500 \
+			| hppa | hppa1.[01] | hppa2.0 | hppa2.0[nw] | hppa64 \
+			| hexagon \
+			| i370 | i*86 | i860 | i960 | ia16 | ia64 \
+			| ip2k | iq2000 \
+			| k1om \
+			| le32 | le64 \
+			| lm32 \
+			| loongarch32 | loongarch64 | loongarchx32 \
+			| m32c | m32r | m32rle \
+			| m5200 | m68000 | m680[012346]0 | m68360 | m683?2 | m68k \
+			| m6811 | m68hc11 | m6812 | m68hc12 | m68hcs12x \
+			| m88110 | m88k | maxq | mb | mcore | mep | metag \
+			| microblaze | microblazeel \
+			| mips | mipsbe | mipseb | mipsel | mipsle \
+			| mips16 \
+			| mips64 | mips64eb | mips64el \
+			| mips64octeon | mips64octeonel \
+			| mips64orion | mips64orionel \
+			| mips64r5900 | mips64r5900el \
+			| mips64vr | mips64vrel \
+			| mips64vr4100 | mips64vr4100el \
+			| mips64vr4300 | mips64vr4300el \
+			| mips64vr5000 | mips64vr5000el \
+			| mips64vr5900 | mips64vr5900el \
+			| mipsisa32 | mipsisa32el \
+			| mipsisa32r2 | mipsisa32r2el \
+			| mipsisa32r6 | mipsisa32r6el \
+			| mipsisa64 | mipsisa64el \
+			| mipsisa64r2 | mipsisa64r2el \
+			| mipsisa64r6 | mipsisa64r6el \
+			| mipsisa64sb1 | mipsisa64sb1el \
+			| mipsisa64sr71k | mipsisa64sr71kel \
+			| mipsr5900 | mipsr5900el \
+			| mipstx39 | mipstx39el \
+			| mmix \
+			| mn10200 | mn10300 \
+			| moxie \
+			| mt \
+			| msp430 \
+			| nds32 | nds32le | nds32be \
+			| nfp \
+			| nios | nios2 | nios2eb | nios2el \
+			| none | np1 | ns16k | ns32k | nvptx \
+			| open8 \
+			| or1k* \
+			| or32 \
+			| orion \
+			| picochip \
+			| pdp10 | pdp11 | pj | pjl | pn | power \
+			| powerpc | powerpc64 | powerpc64le | powerpcle | powerpcspe \
+			| pru \
+			| pyramid \
+			| riscv | riscv32 | riscv32be | riscv64 | riscv64be \
+			| rl78 | romp | rs6000 | rx \
+			| s390 | s390x \
+			| score \
+			| sh | shl \
+			| sh[1234] | sh[24]a | sh[24]ae[lb] | sh[23]e | she[lb] | sh[lb]e \
+			| sh[1234]e[lb] |  sh[12345][lb]e | sh[23]ele | sh64 | sh64le \
+			| sparc | sparc64 | sparc64b | sparc64v | sparc86x | sparclet \
+			| sparclite \
+			| sparcv8 | sparcv9 | sparcv9b | sparcv9v | sv1 | sx* \
+			| spu \
+			| tahoe \
+			| thumbv7* \
+			| tic30 | tic4x | tic54x | tic55x | tic6x | tic80 \
+			| tron \
+			| ubicom32 \
+			| v70 | v850 | v850e | v850e1 | v850es | v850e2 | v850e2v3 \
+			| vax \
+			| visium \
+			| w65 \
+			| wasm32 | wasm64 \
+			| we32k \
+			| x86 | x86_64 | xc16x | xgate | xps100 \
+			| xstormy16 | xtensa* \
+			| ymp \
+			| z8k | z80)
+				;;
+
+			*)
+				echo Invalid configuration \`"$1"\': machine \`"$cpu-$vendor"\' not recognized 1>&2
+				exit 1
+				;;
+		esac
+		;;
+esac
+
+# Here we canonicalize certain aliases for manufacturers.
+case $vendor in
+	digital*)
+		vendor=dec
+		;;
+	commodore*)
+		vendor=cbm
+		;;
+	*)
+		;;
+esac
+
+# Decode manufacturer-specific aliases for certain operating systems.
+
+if test x$basic_os != x
+then
+
+# First recognize some ad-hoc caes, or perhaps split kernel-os, or else just
+# set os.
+case $basic_os in
+	gnu/linux*)
+		kernel=linux
+		os=$(echo $basic_os | sed -e 's|gnu/linux|gnu|')
+		;;
+	os2-emx)
+		kernel=os2
+		os=$(echo $basic_os | sed -e 's|os2-emx|emx|')
+		;;
+	nto-qnx*)
+		kernel=nto
+		os=$(echo $basic_os | sed -e 's|nto-qnx|qnx|')
+		;;
+	*-*)
+		# shellcheck disable=SC2162
+		IFS="-" read kernel os <<EOF
+$basic_os
+EOF
+		;;
+	# Default OS when just kernel was specified
+	nto*)
+		kernel=nto
+		os=$(echo $basic_os | sed -e 's|nto|qnx|')
+		;;
+	linux*)
+		kernel=linux
+		os=$(echo $basic_os | sed -e 's|linux|gnu|')
+		;;
+	*)
+		kernel=
+		os=$basic_os
+		;;
+esac
+
+# Now, normalize the OS (knowing we just have one component, it's not a kernel,
+# etc.)
+case $os in
+	# First match some system type aliases that might get confused
+	# with valid system types.
+	# solaris* is a basic system type, with this one exception.
+	auroraux)
+		os=auroraux
+		;;
+	bluegene*)
+		os=cnk
+		;;
+	solaris1 | solaris1.*)
+		os=$(echo $os | sed -e 's|solaris1|sunos4|')
+		;;
+	solaris)
+		os=solaris2
+		;;
+	unixware*)
+		os=sysv4.2uw
+		;;
+	# es1800 is here to avoid being matched by es* (a different OS)
+	es1800*)
+		os=ose
+		;;
+	# Some version numbers need modification
+	chorusos*)
+		os=chorusos
+		;;
+	isc)
+		os=isc2.2
+		;;
+	sco6)
+		os=sco5v6
+		;;
+	sco5)
+		os=sco3.2v5
+		;;
+	sco4)
+		os=sco3.2v4
+		;;
+	sco3.2.[4-9]*)
+		os=$(echo $os | sed -e 's/sco3.2./sco3.2v/')
+		;;
+	sco*v* | scout)
+		# Don't match below
+		;;
+	sco*)
+		os=sco3.2v2
+		;;
+	psos*)
+		os=psos
+		;;
+	qnx*)
+		os=qnx
+		;;
+	hiux*)
+		os=hiuxwe2
+		;;
+	lynx*178)
+		os=lynxos178
+		;;
+	lynx*5)
+		os=lynxos5
+		;;
+	lynxos*)
+		# don't get caught up in next wildcard
+		;;
+	lynx*)
+		os=lynxos
+		;;
+	mac[0-9]*)
+		os=$(echo "$os" | sed -e 's|mac|macos|')
+		;;
+	opened*)
+		os=openedition
+		;;
+	os400*)
+		os=os400
+		;;
+	sunos5*)
+		os=$(echo "$os" | sed -e 's|sunos5|solaris2|')
+		;;
+	sunos6*)
+		os=$(echo "$os" | sed -e 's|sunos6|solaris3|')
+		;;
+	wince*)
+		os=wince
+		;;
+	utek*)
+		os=bsd
+		;;
+	dynix*)
+		os=bsd
+		;;
+	acis*)
+		os=aos
+		;;
+	atheos*)
+		os=atheos
+		;;
+	syllable*)
+		os=syllable
+		;;
+	386bsd)
+		os=bsd
+		;;
+	ctix* | uts*)
+		os=sysv
+		;;
+	nova*)
+		os=rtmk-nova
+		;;
+	ns2)
+		os=nextstep2
+		;;
+	# Preserve the version number of sinix5.
+	sinix5.*)
+		os=$(echo $os | sed -e 's|sinix|sysv|')
+		;;
+	sinix*)
+		os=sysv4
+		;;
+	tpf*)
+		os=tpf
+		;;
+	triton*)
+		os=sysv3
+		;;
+	oss*)
+		os=sysv3
+		;;
+	svr4*)
+		os=sysv4
+		;;
+	svr3)
+		os=sysv3
+		;;
+	sysvr4)
+		os=sysv4
+		;;
+	ose*)
+		os=ose
+		;;
+	*mint | mint[0-9]* | *MiNT | MiNT[0-9]*)
+		os=mint
+		;;
+	dicos*)
+		os=dicos
+		;;
+	pikeos*)
+		# Until real need of OS specific support for
+		# particular features comes up, bare metal
+		# configurations are quite functional.
+		case $cpu in
+		    arm*)
+			os=eabi
+			;;
+		    *)
+			os=elf
+			;;
+		esac
+		;;
+	*)
+		# No normalization, but not necessarily accepted, that comes below.
+		;;
+esac
+
+else
+
+# Here we handle the default operating systems that come with various machines.
+# The value should be what the vendor currently ships out the door with their
+# machine or put another way, the most popular os provided with the machine.
+
+# Note that if you're going to try to match "-MANUFACTURER" here (say,
+# "-sun"), then you have to tell the case statement up towards the top
+# that MANUFACTURER isn't an operating system.  Otherwise, code above
+# will signal an error saying that MANUFACTURER isn't an operating
+# system, and we'll never get to this point.
+
+kernel=
+case $cpu-$vendor in
+	score-*)
+		os=elf
+		;;
+	spu-*)
+		os=elf
+		;;
+	*-acorn)
+		os=riscix1.2
+		;;
+	arm*-rebel)
+		kernel=linux
+		os=gnu
+		;;
+	arm*-semi)
+		os=aout
+		;;
+	c4x-* | tic4x-*)
+		os=coff
+		;;
+	c8051-*)
+		os=elf
+		;;
+	clipper-intergraph)
+		os=clix
+		;;
+	hexagon-*)
+		os=elf
+		;;
+	tic54x-*)
+		os=coff
+		;;
+	tic55x-*)
+		os=coff
+		;;
+	tic6x-*)
+		os=coff
+		;;
+	# This must come before the *-dec entry.
+	pdp10-*)
+		os=tops20
+		;;
+	pdp11-*)
+		os=none
+		;;
+	*-dec | vax-*)
+		os=ultrix4.2
+		;;
+	m68*-apollo)
+		os=domain
+		;;
+	i386-sun)
+		os=sunos4.0.2
+		;;
+	m68000-sun)
+		os=sunos3
+		;;
+	m68*-cisco)
+		os=aout
+		;;
+	mep-*)
+		os=elf
+		;;
+	mips*-cisco)
+		os=elf
+		;;
+	mips*-*)
+		os=elf
+		;;
+	or32-*)
+		os=coff
+		;;
+	*-tti)	# must be before sparc entry or we get the wrong os.
+		os=sysv3
+		;;
+	sparc-* | *-sun)
+		os=sunos4.1.1
+		;;
+	pru-*)
+		os=elf
+		;;
+	*-be)
+		os=beos
+		;;
+	*-ibm)
+		os=aix
+		;;
+	*-knuth)
+		os=mmixware
+		;;
+	*-wec)
+		os=proelf
+		;;
+	*-winbond)
+		os=proelf
+		;;
+	*-oki)
+		os=proelf
+		;;
+	*-hp)
+		os=hpux
+		;;
+	*-hitachi)
+		os=hiux
+		;;
+	i860-* | *-att | *-ncr | *-altos | *-motorola | *-convergent)
+		os=sysv
+		;;
+	*-cbm)
+		os=amigaos
+		;;
+	*-dg)
+		os=dgux
+		;;
+	*-dolphin)
+		os=sysv3
+		;;
+	m68k-ccur)
+		os=rtu
+		;;
+	m88k-omron*)
+		os=luna
+		;;
+	*-next)
+		os=nextstep
+		;;
+	*-sequent)
+		os=ptx
+		;;
+	*-crds)
+		os=unos
+		;;
+	*-ns)
+		os=genix
+		;;
+	i370-*)
+		os=mvs
+		;;
+	*-gould)
+		os=sysv
+		;;
+	*-highlevel)
+		os=bsd
+		;;
+	*-encore)
+		os=bsd
+		;;
+	*-sgi)
+		os=irix
+		;;
+	*-siemens)
+		os=sysv4
+		;;
+	*-masscomp)
+		os=rtu
+		;;
+	f30[01]-fujitsu | f700-fujitsu)
+		os=uxpv
+		;;
+	*-rom68k)
+		os=coff
+		;;
+	*-*bug)
+		os=coff
+		;;
+	*-apple)
+		os=macos
+		;;
+	*-atari*)
+		os=mint
+		;;
+	*-wrs)
+		os=vxworks
+		;;
+	*)
+		os=none
+		;;
+esac
+
+fi
+
+# Now, validate our (potentially fixed-up) OS.
+case $os in
+	# Sometimes we do "kernel-abi", so those need to count as OSes.
+	musl* | newlib* | uclibc*)
+		;;
+	# Likewise for "kernel-libc"
+	eabi* | gnueabi*)
+		;;
+	# Now accept the basic system types.
+	# The portable systems comes first.
+	# Each alternative MUST end in a * to match a version number.
+	gnu* | android* | bsd* | mach* | minix* | genix* | ultrix* | irix* \
+	     | *vms* | esix* | aix* | cnk* | sunos | sunos[34]* \
+	     | hpux* | unos* | osf* | luna* | dgux* | auroraux* | solaris* \
+	     | sym* |  plan9* | psp* | sim* | xray* | os68k* | v88r* \
+	     | hiux* | abug | nacl* | netware* | windows* \
+	     | os9* | macos* | osx* | ios* \
+	     | mpw* | magic* | mmixware* | mon960* | lnews* \
+	     | amigaos* | amigados* | msdos* | newsos* | unicos* | aof* \
+	     | aos* | aros* | cloudabi* | sortix* | twizzler* \
+	     | nindy* | vxsim* | vxworks* | ebmon* | hms* | mvs* \
+	     | clix* | riscos* | uniplus* | iris* | isc* | rtu* | xenix* \
+	     | mirbsd* | netbsd* | dicos* | openedition* | ose* \
+	     | bitrig* | openbsd* | solidbsd* | libertybsd* | os108* \
+	     | ekkobsd* | freebsd* | riscix* | lynxos* | os400* \
+	     | bosx* | nextstep* | cxux* | aout* | elf* | oabi* \
+	     | ptx* | coff* | ecoff* | winnt* | domain* | vsta* \
+	     | udi* | lites* | ieee* | go32* | aux* | hcos* \
+	     | chorusrdb* | cegcc* | glidix* \
+	     | cygwin* | msys* | pe* | moss* | proelf* | rtems* \
+	     | midipix* | mingw32* | mingw64* | mint* \
+	     | uxpv* | beos* | mpeix* | udk* | moxiebox* \
+	     | interix* | uwin* | mks* | rhapsody* | darwin* \
+	     | openstep* | oskit* | conix* | pw32* | nonstopux* \
+	     | storm-chaos* | tops10* | tenex* | tops20* | its* \
+	     | os2* | vos* | palmos* | uclinux* | nucleus* | morphos* \
+	     | scout* | superux* | sysv* | rtmk* | tpf* | windiss* \
+	     | powermax* | dnix* | nx6 | nx7 | sei* | dragonfly* \
+	     | skyos* | haiku* | rdos* | toppers* | drops* | es* \
+	     | onefs* | tirtos* | phoenix* | fuchsia* | redox* | bme* \
+	     | midnightbsd* | amdhsa* | unleashed* | emscripten* | wasi* \
+	     | nsk* | powerunix* | genode* | zvmoe* | qnx* | emx*)
+		;;
+	# This one is extra strict with allowed versions
+	sco3.2v2 | sco3.2v[4-9]* | sco5v6*)
+		# Don't forget version if it is 3.2v4 or newer.
+		;;
+	none)
+		;;
+	*)
+		echo Invalid configuration \`"$1"\': OS \`"$os"\' not recognized 1>&2
+		exit 1
+		;;
+esac
+
+# As a final step for OS-related things, validate the OS-kernel combination
+# (given a valid OS), if there is a kernel.
+case $kernel-$os in
+	linux-gnu* | linux-dietlibc* | linux-android* | linux-newlib* | linux-musl* | linux-uclibc* )
+		;;
+	uclinux-uclibc* )
+		;;
+	-dietlibc* | -newlib* | -musl* | -uclibc* )
+		# These are just libc implementations, not actual OSes, and thus
+		# require a kernel.
+		echo "Invalid configuration \`$1': libc \`$os' needs explicit kernel." 1>&2
+		exit 1
+		;;
+	kfreebsd*-gnu* | kopensolaris*-gnu*)
+		;;
+	nto-qnx*)
+		;;
+	os2-emx)
+		;;
+	*-eabi* | *-gnueabi*)
+		;;
+	-*)
+		# Blank kernel with real OS is always fine.
+		;;
+	*-*)
+		echo "Invalid configuration \`$1': Kernel \`$kernel' not known to work with OS \`$os'." 1>&2
+		exit 1
+		;;
+esac
+
+# Here we handle the case where we know the os, and the CPU type, but not the
+# manufacturer.  We pick the logical manufacturer.
+case $vendor in
+	unknown)
+		case $cpu-$os in
+			*-riscix*)
+				vendor=acorn
+				;;
+			*-sunos*)
+				vendor=sun
+				;;
+			*-cnk* | *-aix*)
+				vendor=ibm
+				;;
+			*-beos*)
+				vendor=be
+				;;
+			*-hpux*)
+				vendor=hp
+				;;
+			*-mpeix*)
+				vendor=hp
+				;;
+			*-hiux*)
+				vendor=hitachi
+				;;
+			*-unos*)
+				vendor=crds
+				;;
+			*-dgux*)
+				vendor=dg
+				;;
+			*-luna*)
+				vendor=omron
+				;;
+			*-genix*)
+				vendor=ns
+				;;
+			*-clix*)
+				vendor=intergraph
+				;;
+			*-mvs* | *-opened*)
+				vendor=ibm
+				;;
+			*-os400*)
+				vendor=ibm
+				;;
+			s390-* | s390x-*)
+				vendor=ibm
+				;;
+			*-ptx*)
+				vendor=sequent
+				;;
+			*-tpf*)
+				vendor=ibm
+				;;
+			*-vxsim* | *-vxworks* | *-windiss*)
+				vendor=wrs
+				;;
+			*-aux*)
+				vendor=apple
+				;;
+			*-hms*)
+				vendor=hitachi
+				;;
+			*-mpw* | *-macos*)
+				vendor=apple
+				;;
+			*-*mint | *-mint[0-9]* | *-*MiNT | *-MiNT[0-9]*)
+				vendor=atari
+				;;
+			*-vos*)
+				vendor=stratus
+				;;
+		esac
+		;;
+esac
+
+echo "$cpu-$vendor-${kernel:+$kernel-}$os"
+exit
+
+# Local variables:
+# eval: (add-hook 'before-save-hook 'time-stamp)
+# time-stamp-start: "timestamp='"
+# time-stamp-format: "%:y-%02m-%02d"
+# time-stamp-end: "'"
+# End:
diff --git a/deps/jemalloc/build-aux/install-sh b/deps/jemalloc/build-aux/install-sh
new file mode 100755
index 0000000..ebc6691
--- /dev/null
+++ b/deps/jemalloc/build-aux/install-sh
@@ -0,0 +1,250 @@
+#! /bin/sh
+#
+# install - install a program, script, or datafile
+# This comes from X11R5 (mit/util/scripts/install.sh).
+#
+# Copyright 1991 by the Massachusetts Institute of Technology
+#
+# Permission to use, copy, modify, distribute, and sell this software and its
+# documentation for any purpose is hereby granted without fee, provided that
+# the above copyright notice appear in all copies and that both that
+# copyright notice and this permission notice appear in supporting
+# documentation, and that the name of M.I.T. not be used in advertising or
+# publicity pertaining to distribution of the software without specific,
+# written prior permission.  M.I.T. makes no representations about the
+# suitability of this software for any purpose.  It is provided "as is"
+# without express or implied warranty.
+#
+# Calling this script install-sh is preferred over install.sh, to prevent
+# `make' implicit rules from creating a file called install from it
+# when there is no Makefile.
+#
+# This script is compatible with the BSD install script, but was written
+# from scratch.  It can only install one file at a time, a restriction
+# shared with many OS's install programs.
+
+
+# set DOITPROG to echo to test this script
+
+# Don't use :- since 4.3BSD and earlier shells don't like it.
+doit="${DOITPROG-}"
+
+
+# put in absolute paths if you don't have them in your path; or use env. vars.
+
+mvprog="${MVPROG-mv}"
+cpprog="${CPPROG-cp}"
+chmodprog="${CHMODPROG-chmod}"
+chownprog="${CHOWNPROG-chown}"
+chgrpprog="${CHGRPPROG-chgrp}"
+stripprog="${STRIPPROG-strip}"
+rmprog="${RMPROG-rm}"
+mkdirprog="${MKDIRPROG-mkdir}"
+
+transformbasename=""
+transform_arg=""
+instcmd="$mvprog"
+chmodcmd="$chmodprog 0755"
+chowncmd=""
+chgrpcmd=""
+stripcmd=""
+rmcmd="$rmprog -f"
+mvcmd="$mvprog"
+src=""
+dst=""
+dir_arg=""
+
+while [ x"$1" != x ]; do
+    case $1 in
+	-c) instcmd="$cpprog"
+	    shift
+	    continue;;
+
+	-d) dir_arg=true
+	    shift
+	    continue;;
+
+	-m) chmodcmd="$chmodprog $2"
+	    shift
+	    shift
+	    continue;;
+
+	-o) chowncmd="$chownprog $2"
+	    shift
+	    shift
+	    continue;;
+
+	-g) chgrpcmd="$chgrpprog $2"
+	    shift
+	    shift
+	    continue;;
+
+	-s) stripcmd="$stripprog"
+	    shift
+	    continue;;
+
+	-t=*) transformarg=`echo $1 | sed 's/-t=//'`
+	    shift
+	    continue;;
+
+	-b=*) transformbasename=`echo $1 | sed 's/-b=//'`
+	    shift
+	    continue;;
+
+	*)  if [ x"$src" = x ]
+	    then
+		src=$1
+	    else
+		# this colon is to work around a 386BSD /bin/sh bug
+		:
+		dst=$1
+	    fi
+	    shift
+	    continue;;
+    esac
+done
+
+if [ x"$src" = x ]
+then
+	echo "install:	no input file specified"
+	exit 1
+else
+	true
+fi
+
+if [ x"$dir_arg" != x ]; then
+	dst=$src
+	src=""
+	
+	if [ -d $dst ]; then
+		instcmd=:
+	else
+		instcmd=mkdir
+	fi
+else
+
+# Waiting for this to be detected by the "$instcmd $src $dsttmp" command
+# might cause directories to be created, which would be especially bad 
+# if $src (and thus $dsttmp) contains '*'.
+
+	if [ -f $src -o -d $src ]
+	then
+		true
+	else
+		echo "install:  $src does not exist"
+		exit 1
+	fi
+	
+	if [ x"$dst" = x ]
+	then
+		echo "install:	no destination specified"
+		exit 1
+	else
+		true
+	fi
+
+# If destination is a directory, append the input filename; if your system
+# does not like double slashes in filenames, you may need to add some logic
+
+	if [ -d $dst ]
+	then
+		dst="$dst"/`basename $src`
+	else
+		true
+	fi
+fi
+
+## this sed command emulates the dirname command
+dstdir=`echo $dst | sed -e 's,[^/]*$,,;s,/$,,;s,^$,.,'`
+
+# Make sure that the destination directory exists.
+#  this part is taken from Noah Friedman's mkinstalldirs script
+
+# Skip lots of stat calls in the usual case.
+if [ ! -d "$dstdir" ]; then
+defaultIFS='	
+'
+IFS="${IFS-${defaultIFS}}"
+
+oIFS="${IFS}"
+# Some sh's can't handle IFS=/ for some reason.
+IFS='%'
+set - `echo ${dstdir} | sed -e 's@/@%@g' -e 's@^%@/@'`
+IFS="${oIFS}"
+
+pathcomp=''
+
+while [ $# -ne 0 ] ; do
+	pathcomp="${pathcomp}${1}"
+	shift
+
+	if [ ! -d "${pathcomp}" ] ;
+        then
+		$mkdirprog "${pathcomp}"
+	else
+		true
+	fi
+
+	pathcomp="${pathcomp}/"
+done
+fi
+
+if [ x"$dir_arg" != x ]
+then
+	$doit $instcmd $dst &&
+
+	if [ x"$chowncmd" != x ]; then $doit $chowncmd $dst; else true ; fi &&
+	if [ x"$chgrpcmd" != x ]; then $doit $chgrpcmd $dst; else true ; fi &&
+	if [ x"$stripcmd" != x ]; then $doit $stripcmd $dst; else true ; fi &&
+	if [ x"$chmodcmd" != x ]; then $doit $chmodcmd $dst; else true ; fi
+else
+
+# If we're going to rename the final executable, determine the name now.
+
+	if [ x"$transformarg" = x ] 
+	then
+		dstfile=`basename $dst`
+	else
+		dstfile=`basename $dst $transformbasename | 
+			sed $transformarg`$transformbasename
+	fi
+
+# don't allow the sed command to completely eliminate the filename
+
+	if [ x"$dstfile" = x ] 
+	then
+		dstfile=`basename $dst`
+	else
+		true
+	fi
+
+# Make a temp file name in the proper directory.
+
+	dsttmp=$dstdir/#inst.$$#
+
+# Move or copy the file name to the temp name
+
+	$doit $instcmd $src $dsttmp &&
+
+	trap "rm -f ${dsttmp}" 0 &&
+
+# and set any options; do chmod last to preserve setuid bits
+
+# If any of these fail, we abort the whole thing.  If we want to
+# ignore errors from any of these, just make sure not to ignore
+# errors from the above "$doit $instcmd $src $dsttmp" command.
+
+	if [ x"$chowncmd" != x ]; then $doit $chowncmd $dsttmp; else true;fi &&
+	if [ x"$chgrpcmd" != x ]; then $doit $chgrpcmd $dsttmp; else true;fi &&
+	if [ x"$stripcmd" != x ]; then $doit $stripcmd $dsttmp; else true;fi &&
+	if [ x"$chmodcmd" != x ]; then $doit $chmodcmd $dsttmp; else true;fi &&
+
+# Now rename the file to the real destination.
+
+	$doit $rmcmd -f $dstdir/$dstfile &&
+	$doit $mvcmd $dsttmp $dstdir/$dstfile 
+
+fi &&
+
+
+exit 0
diff --git a/deps/jemalloc/config.stamp.in b/deps/jemalloc/config.stamp.in
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/deps/jemalloc/config.stamp.in
diff --git a/deps/jemalloc/configure b/deps/jemalloc/configure
new file mode 100755
index 0000000..6d62647
--- /dev/null
+++ b/deps/jemalloc/configure
@@ -0,0 +1,16792 @@
+#! /bin/sh
+# Guess values for system-dependent variables and create Makefiles.
+# Generated by GNU Autoconf 2.71.
+#
+#
+# Copyright (C) 1992-1996, 1998-2017, 2020-2021 Free Software Foundation,
+# Inc.
+#
+#
+# This configure script is free software; the Free Software Foundation
+# gives unlimited permission to copy, distribute and modify it.
+## -------------------- ##
+## M4sh Initialization. ##
+## -------------------- ##
+
+# Be more Bourne compatible
+DUALCASE=1; export DUALCASE # for MKS sh
+as_nop=:
+if test ${ZSH_VERSION+y} && (emulate sh) >/dev/null 2>&1
+then :
+  emulate sh
+  NULLCMD=:
+  # Pre-4.2 versions of Zsh do word splitting on ${1+"$@"}, which
+  # is contrary to our usage.  Disable this feature.
+  alias -g '${1+"$@"}'='"$@"'
+  setopt NO_GLOB_SUBST
+else $as_nop
+  case `(set -o) 2>/dev/null` in #(
+  *posix*) :
+    set -o posix ;; #(
+  *) :
+     ;;
+esac
+fi
+
+
+
+# Reset variables that may have inherited troublesome values from
+# the environment.
+
+# IFS needs to be set, to space, tab, and newline, in precisely that order.
+# (If _AS_PATH_WALK were called with IFS unset, it would have the
+# side effect of setting IFS to empty, thus disabling word splitting.)
+# Quoting is to prevent editors from complaining about space-tab.
+as_nl='
+'
+export as_nl
+IFS=" ""	$as_nl"
+
+PS1='$ '
+PS2='> '
+PS4='+ '
+
+# Ensure predictable behavior from utilities with locale-dependent output.
+LC_ALL=C
+export LC_ALL
+LANGUAGE=C
+export LANGUAGE
+
+# We cannot yet rely on "unset" to work, but we need these variables
+# to be unset--not just set to an empty or harmless value--now, to
+# avoid bugs in old shells (e.g. pre-3.0 UWIN ksh).  This construct
+# also avoids known problems related to "unset" and subshell syntax
+# in other old shells (e.g. bash 2.01 and pdksh 5.2.14).
+for as_var in BASH_ENV ENV MAIL MAILPATH CDPATH
+do eval test \${$as_var+y} \
+  && ( (unset $as_var) || exit 1) >/dev/null 2>&1 && unset $as_var || :
+done
+
+# Ensure that fds 0, 1, and 2 are open.
+if (exec 3>&0) 2>/dev/null; then :; else exec 0</dev/null; fi
+if (exec 3>&1) 2>/dev/null; then :; else exec 1>/dev/null; fi
+if (exec 3>&2)            ; then :; else exec 2>/dev/null; fi
+
+# The user is always right.
+if ${PATH_SEPARATOR+false} :; then
+  PATH_SEPARATOR=:
+  (PATH='/bin;/bin'; FPATH=$PATH; sh -c :) >/dev/null 2>&1 && {
+    (PATH='/bin:/bin'; FPATH=$PATH; sh -c :) >/dev/null 2>&1 ||
+      PATH_SEPARATOR=';'
+  }
+fi
+
+
+# Find who we are.  Look in the path if we contain no directory separator.
+as_myself=
+case $0 in #((
+  *[\\/]* ) as_myself=$0 ;;
+  *) as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  case $as_dir in #(((
+    '') as_dir=./ ;;
+    */) ;;
+    *) as_dir=$as_dir/ ;;
+  esac
+    test -r "$as_dir$0" && as_myself=$as_dir$0 && break
+  done
+IFS=$as_save_IFS
+
+     ;;
+esac
+# We did not find ourselves, most probably we were run as `sh COMMAND'
+# in which case we are not to be found in the path.
+if test "x$as_myself" = x; then
+  as_myself=$0
+fi
+if test ! -f "$as_myself"; then
+  printf "%s\n" "$as_myself: error: cannot find myself; rerun with an absolute file name" >&2
+  exit 1
+fi
+
+
+# Use a proper internal environment variable to ensure we don't fall
+  # into an infinite loop, continuously re-executing ourselves.
+  if test x"${_as_can_reexec}" != xno && test "x$CONFIG_SHELL" != x; then
+    _as_can_reexec=no; export _as_can_reexec;
+    # We cannot yet assume a decent shell, so we have to provide a
+# neutralization value for shells without unset; and this also
+# works around shells that cannot unset nonexistent variables.
+# Preserve -v and -x to the replacement shell.
+BASH_ENV=/dev/null
+ENV=/dev/null
+(unset BASH_ENV) >/dev/null 2>&1 && unset BASH_ENV ENV
+case $- in # ((((
+  *v*x* | *x*v* ) as_opts=-vx ;;
+  *v* ) as_opts=-v ;;
+  *x* ) as_opts=-x ;;
+  * ) as_opts= ;;
+esac
+exec $CONFIG_SHELL $as_opts "$as_myself" ${1+"$@"}
+# Admittedly, this is quite paranoid, since all the known shells bail
+# out after a failed `exec'.
+printf "%s\n" "$0: could not re-execute with $CONFIG_SHELL" >&2
+exit 255
+  fi
+  # We don't want this to propagate to other subprocesses.
+          { _as_can_reexec=; unset _as_can_reexec;}
+if test "x$CONFIG_SHELL" = x; then
+  as_bourne_compatible="as_nop=:
+if test \${ZSH_VERSION+y} && (emulate sh) >/dev/null 2>&1
+then :
+  emulate sh
+  NULLCMD=:
+  # Pre-4.2 versions of Zsh do word splitting on \${1+\"\$@\"}, which
+  # is contrary to our usage.  Disable this feature.
+  alias -g '\${1+\"\$@\"}'='\"\$@\"'
+  setopt NO_GLOB_SUBST
+else \$as_nop
+  case \`(set -o) 2>/dev/null\` in #(
+  *posix*) :
+    set -o posix ;; #(
+  *) :
+     ;;
+esac
+fi
+"
+  as_required="as_fn_return () { (exit \$1); }
+as_fn_success () { as_fn_return 0; }
+as_fn_failure () { as_fn_return 1; }
+as_fn_ret_success () { return 0; }
+as_fn_ret_failure () { return 1; }
+
+exitcode=0
+as_fn_success || { exitcode=1; echo as_fn_success failed.; }
+as_fn_failure && { exitcode=1; echo as_fn_failure succeeded.; }
+as_fn_ret_success || { exitcode=1; echo as_fn_ret_success failed.; }
+as_fn_ret_failure && { exitcode=1; echo as_fn_ret_failure succeeded.; }
+if ( set x; as_fn_ret_success y && test x = \"\$1\" )
+then :
+
+else \$as_nop
+  exitcode=1; echo positional parameters were not saved.
+fi
+test x\$exitcode = x0 || exit 1
+blah=\$(echo \$(echo blah))
+test x\"\$blah\" = xblah || exit 1
+test -x / || exit 1"
+  as_suggested="  as_lineno_1=";as_suggested=$as_suggested$LINENO;as_suggested=$as_suggested" as_lineno_1a=\$LINENO
+  as_lineno_2=";as_suggested=$as_suggested$LINENO;as_suggested=$as_suggested" as_lineno_2a=\$LINENO
+  eval 'test \"x\$as_lineno_1'\$as_run'\" != \"x\$as_lineno_2'\$as_run'\" &&
+  test \"x\`expr \$as_lineno_1'\$as_run' + 1\`\" = \"x\$as_lineno_2'\$as_run'\"' || exit 1
+test \$(( 1 + 1 )) = 2 || exit 1"
+  if (eval "$as_required") 2>/dev/null
+then :
+  as_have_required=yes
+else $as_nop
+  as_have_required=no
+fi
+  if test x$as_have_required = xyes && (eval "$as_suggested") 2>/dev/null
+then :
+
+else $as_nop
+  as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+as_found=false
+for as_dir in /bin$PATH_SEPARATOR/usr/bin$PATH_SEPARATOR$PATH
+do
+  IFS=$as_save_IFS
+  case $as_dir in #(((
+    '') as_dir=./ ;;
+    */) ;;
+    *) as_dir=$as_dir/ ;;
+  esac
+  as_found=:
+  case $as_dir in #(
+	 /*)
+	   for as_base in sh bash ksh sh5; do
+	     # Try only shells that exist, to save several forks.
+	     as_shell=$as_dir$as_base
+	     if { test -f "$as_shell" || test -f "$as_shell.exe"; } &&
+		    as_run=a "$as_shell" -c "$as_bourne_compatible""$as_required" 2>/dev/null
+then :
+  CONFIG_SHELL=$as_shell as_have_required=yes
+		   if as_run=a "$as_shell" -c "$as_bourne_compatible""$as_suggested" 2>/dev/null
+then :
+  break 2
+fi
+fi
+	   done;;
+       esac
+  as_found=false
+done
+IFS=$as_save_IFS
+if $as_found
+then :
+
+else $as_nop
+  if { test -f "$SHELL" || test -f "$SHELL.exe"; } &&
+	      as_run=a "$SHELL" -c "$as_bourne_compatible""$as_required" 2>/dev/null
+then :
+  CONFIG_SHELL=$SHELL as_have_required=yes
+fi
+fi
+
+
+      if test "x$CONFIG_SHELL" != x
+then :
+  export CONFIG_SHELL
+             # We cannot yet assume a decent shell, so we have to provide a
+# neutralization value for shells without unset; and this also
+# works around shells that cannot unset nonexistent variables.
+# Preserve -v and -x to the replacement shell.
+BASH_ENV=/dev/null
+ENV=/dev/null
+(unset BASH_ENV) >/dev/null 2>&1 && unset BASH_ENV ENV
+case $- in # ((((
+  *v*x* | *x*v* ) as_opts=-vx ;;
+  *v* ) as_opts=-v ;;
+  *x* ) as_opts=-x ;;
+  * ) as_opts= ;;
+esac
+exec $CONFIG_SHELL $as_opts "$as_myself" ${1+"$@"}
+# Admittedly, this is quite paranoid, since all the known shells bail
+# out after a failed `exec'.
+printf "%s\n" "$0: could not re-execute with $CONFIG_SHELL" >&2
+exit 255
+fi
+
+    if test x$as_have_required = xno
+then :
+  printf "%s\n" "$0: This script requires a shell more modern than all"
+  printf "%s\n" "$0: the shells that I found on your system."
+  if test ${ZSH_VERSION+y} ; then
+    printf "%s\n" "$0: In particular, zsh $ZSH_VERSION has bugs and should"
+    printf "%s\n" "$0: be upgraded to zsh 4.3.4 or later."
+  else
+    printf "%s\n" "$0: Please tell bug-autoconf@gnu.org about your system,
+$0: including any error possibly output before this
+$0: message. Then install a modern shell, or manually run
+$0: the script under such a shell if you do have one."
+  fi
+  exit 1
+fi
+fi
+fi
+SHELL=${CONFIG_SHELL-/bin/sh}
+export SHELL
+# Unset more variables known to interfere with behavior of common tools.
+CLICOLOR_FORCE= GREP_OPTIONS=
+unset CLICOLOR_FORCE GREP_OPTIONS
+
+## --------------------- ##
+## M4sh Shell Functions. ##
+## --------------------- ##
+# as_fn_unset VAR
+# ---------------
+# Portably unset VAR.
+as_fn_unset ()
+{
+  { eval $1=; unset $1;}
+}
+as_unset=as_fn_unset
+
+
+# as_fn_set_status STATUS
+# -----------------------
+# Set $? to STATUS, without forking.
+as_fn_set_status ()
+{
+  return $1
+} # as_fn_set_status
+
+# as_fn_exit STATUS
+# -----------------
+# Exit the shell with STATUS, even in a "trap 0" or "set -e" context.
+as_fn_exit ()
+{
+  set +e
+  as_fn_set_status $1
+  exit $1
+} # as_fn_exit
+# as_fn_nop
+# ---------
+# Do nothing but, unlike ":", preserve the value of $?.
+as_fn_nop ()
+{
+  return $?
+}
+as_nop=as_fn_nop
+
+# as_fn_mkdir_p
+# -------------
+# Create "$as_dir" as a directory, including parents if necessary.
+as_fn_mkdir_p ()
+{
+
+  case $as_dir in #(
+  -*) as_dir=./$as_dir;;
+  esac
+  test -d "$as_dir" || eval $as_mkdir_p || {
+    as_dirs=
+    while :; do
+      case $as_dir in #(
+      *\'*) as_qdir=`printf "%s\n" "$as_dir" | sed "s/'/'\\\\\\\\''/g"`;; #'(
+      *) as_qdir=$as_dir;;
+      esac
+      as_dirs="'$as_qdir' $as_dirs"
+      as_dir=`$as_dirname -- "$as_dir" ||
+$as_expr X"$as_dir" : 'X\(.*[^/]\)//*[^/][^/]*/*$' \| \
+	 X"$as_dir" : 'X\(//\)[^/]' \| \
+	 X"$as_dir" : 'X\(//\)$' \| \
+	 X"$as_dir" : 'X\(/\)' \| . 2>/dev/null ||
+printf "%s\n" X"$as_dir" |
+    sed '/^X\(.*[^/]\)\/\/*[^/][^/]*\/*$/{
+	    s//\1/
+	    q
+	  }
+	  /^X\(\/\/\)[^/].*/{
+	    s//\1/
+	    q
+	  }
+	  /^X\(\/\/\)$/{
+	    s//\1/
+	    q
+	  }
+	  /^X\(\/\).*/{
+	    s//\1/
+	    q
+	  }
+	  s/.*/./; q'`
+      test -d "$as_dir" && break
+    done
+    test -z "$as_dirs" || eval "mkdir $as_dirs"
+  } || test -d "$as_dir" || as_fn_error $? "cannot create directory $as_dir"
+
+
+} # as_fn_mkdir_p
+
+# as_fn_executable_p FILE
+# -----------------------
+# Test if FILE is an executable regular file.
+as_fn_executable_p ()
+{
+  test -f "$1" && test -x "$1"
+} # as_fn_executable_p
+# as_fn_append VAR VALUE
+# ----------------------
+# Append the text in VALUE to the end of the definition contained in VAR. Take
+# advantage of any shell optimizations that allow amortized linear growth over
+# repeated appends, instead of the typical quadratic growth present in naive
+# implementations.
+if (eval "as_var=1; as_var+=2; test x\$as_var = x12") 2>/dev/null
+then :
+  eval 'as_fn_append ()
+  {
+    eval $1+=\$2
+  }'
+else $as_nop
+  as_fn_append ()
+  {
+    eval $1=\$$1\$2
+  }
+fi # as_fn_append
+
+# as_fn_arith ARG...
+# ------------------
+# Perform arithmetic evaluation on the ARGs, and store the result in the
+# global $as_val. Take advantage of shells that can avoid forks. The arguments
+# must be portable across $(()) and expr.
+if (eval "test \$(( 1 + 1 )) = 2") 2>/dev/null
+then :
+  eval 'as_fn_arith ()
+  {
+    as_val=$(( $* ))
+  }'
+else $as_nop
+  as_fn_arith ()
+  {
+    as_val=`expr "$@" || test $? -eq 1`
+  }
+fi # as_fn_arith
+
+# as_fn_nop
+# ---------
+# Do nothing but, unlike ":", preserve the value of $?.
+as_fn_nop ()
+{
+  return $?
+}
+as_nop=as_fn_nop
+
+# as_fn_error STATUS ERROR [LINENO LOG_FD]
+# ----------------------------------------
+# Output "`basename $0`: error: ERROR" to stderr. If LINENO and LOG_FD are
+# provided, also output the error to LOG_FD, referencing LINENO. Then exit the
+# script with STATUS, using 1 if that was 0.
+as_fn_error ()
+{
+  as_status=$1; test $as_status -eq 0 && as_status=1
+  if test "$4"; then
+    as_lineno=${as_lineno-"$3"} as_lineno_stack=as_lineno_stack=$as_lineno_stack
+    printf "%s\n" "$as_me:${as_lineno-$LINENO}: error: $2" >&$4
+  fi
+  printf "%s\n" "$as_me: error: $2" >&2
+  as_fn_exit $as_status
+} # as_fn_error
+
+if expr a : '\(a\)' >/dev/null 2>&1 &&
+   test "X`expr 00001 : '.*\(...\)'`" = X001; then
+  as_expr=expr
+else
+  as_expr=false
+fi
+
+if (basename -- /) >/dev/null 2>&1 && test "X`basename -- / 2>&1`" = "X/"; then
+  as_basename=basename
+else
+  as_basename=false
+fi
+
+if (as_dir=`dirname -- /` && test "X$as_dir" = X/) >/dev/null 2>&1; then
+  as_dirname=dirname
+else
+  as_dirname=false
+fi
+
+as_me=`$as_basename -- "$0" ||
+$as_expr X/"$0" : '.*/\([^/][^/]*\)/*$' \| \
+	 X"$0" : 'X\(//\)$' \| \
+	 X"$0" : 'X\(/\)' \| . 2>/dev/null ||
+printf "%s\n" X/"$0" |
+    sed '/^.*\/\([^/][^/]*\)\/*$/{
+	    s//\1/
+	    q
+	  }
+	  /^X\/\(\/\/\)$/{
+	    s//\1/
+	    q
+	  }
+	  /^X\/\(\/\).*/{
+	    s//\1/
+	    q
+	  }
+	  s/.*/./; q'`
+
+# Avoid depending upon Character Ranges.
+as_cr_letters='abcdefghijklmnopqrstuvwxyz'
+as_cr_LETTERS='ABCDEFGHIJKLMNOPQRSTUVWXYZ'
+as_cr_Letters=$as_cr_letters$as_cr_LETTERS
+as_cr_digits='0123456789'
+as_cr_alnum=$as_cr_Letters$as_cr_digits
+
+
+  as_lineno_1=$LINENO as_lineno_1a=$LINENO
+  as_lineno_2=$LINENO as_lineno_2a=$LINENO
+  eval 'test "x$as_lineno_1'$as_run'" != "x$as_lineno_2'$as_run'" &&
+  test "x`expr $as_lineno_1'$as_run' + 1`" = "x$as_lineno_2'$as_run'"' || {
+  # Blame Lee E. McMahon (1931-1989) for sed's syntax.  :-)
+  sed -n '
+    p
+    /[$]LINENO/=
+  ' <$as_myself |
+    sed '
+      s/[$]LINENO.*/&-/
+      t lineno
+      b
+      :lineno
+      N
+      :loop
+      s/[$]LINENO\([^'$as_cr_alnum'_].*\n\)\(.*\)/\2\1\2/
+      t loop
+      s/-\n.*//
+    ' >$as_me.lineno &&
+  chmod +x "$as_me.lineno" ||
+    { printf "%s\n" "$as_me: error: cannot create $as_me.lineno; rerun with a POSIX shell" >&2; as_fn_exit 1; }
+
+  # If we had to re-execute with $CONFIG_SHELL, we're ensured to have
+  # already done that, so ensure we don't try to do so again and fall
+  # in an infinite loop.  This has already happened in practice.
+  _as_can_reexec=no; export _as_can_reexec
+  # Don't try to exec as it changes $[0], causing all sort of problems
+  # (the dirname of $[0] is not the place where we might find the
+  # original and so on.  Autoconf is especially sensitive to this).
+  . "./$as_me.lineno"
+  # Exit status is that of the last command.
+  exit
+}
+
+
+# Determine whether it's possible to make 'echo' print without a newline.
+# These variables are no longer used directly by Autoconf, but are AC_SUBSTed
+# for compatibility with existing Makefiles.
+ECHO_C= ECHO_N= ECHO_T=
+case `echo -n x` in #(((((
+-n*)
+  case `echo 'xy\c'` in
+  *c*) ECHO_T='	';;	# ECHO_T is single tab character.
+  xy)  ECHO_C='\c';;
+  *)   echo `echo ksh88 bug on AIX 6.1` > /dev/null
+       ECHO_T='	';;
+  esac;;
+*)
+  ECHO_N='-n';;
+esac
+
+# For backward compatibility with old third-party macros, we provide
+# the shell variables $as_echo and $as_echo_n.  New code should use
+# AS_ECHO(["message"]) and AS_ECHO_N(["message"]), respectively.
+as_echo='printf %s\n'
+as_echo_n='printf %s'
+
+
+rm -f conf$$ conf$$.exe conf$$.file
+if test -d conf$$.dir; then
+  rm -f conf$$.dir/conf$$.file
+else
+  rm -f conf$$.dir
+  mkdir conf$$.dir 2>/dev/null
+fi
+if (echo >conf$$.file) 2>/dev/null; then
+  if ln -s conf$$.file conf$$ 2>/dev/null; then
+    as_ln_s='ln -s'
+    # ... but there are two gotchas:
+    # 1) On MSYS, both `ln -s file dir' and `ln file dir' fail.
+    # 2) DJGPP < 2.04 has no symlinks; `ln -s' creates a wrapper executable.
+    # In both cases, we have to default to `cp -pR'.
+    ln -s conf$$.file conf$$.dir 2>/dev/null && test ! -f conf$$.exe ||
+      as_ln_s='cp -pR'
+  elif ln conf$$.file conf$$ 2>/dev/null; then
+    as_ln_s=ln
+  else
+    as_ln_s='cp -pR'
+  fi
+else
+  as_ln_s='cp -pR'
+fi
+rm -f conf$$ conf$$.exe conf$$.dir/conf$$.file conf$$.file
+rmdir conf$$.dir 2>/dev/null
+
+if mkdir -p . 2>/dev/null; then
+  as_mkdir_p='mkdir -p "$as_dir"'
+else
+  test -d ./-p && rmdir ./-p
+  as_mkdir_p=false
+fi
+
+as_test_x='test -x'
+as_executable_p=as_fn_executable_p
+
+# Sed expression to map a string onto a valid CPP name.
+as_tr_cpp="eval sed 'y%*$as_cr_letters%P$as_cr_LETTERS%;s%[^_$as_cr_alnum]%_%g'"
+
+# Sed expression to map a string onto a valid variable name.
+as_tr_sh="eval sed 'y%*+%pp%;s%[^_$as_cr_alnum]%_%g'"
+
+
+test -n "$DJDIR" || exec 7<&0 </dev/null
+exec 6>&1
+
+# Name of the host.
+# hostname on some systems (SVR3.2, old GNU/Linux) returns a bogus exit status,
+# so uname gets run too.
+ac_hostname=`(hostname || uname -n) 2>/dev/null | sed 1q`
+
+#
+# Initializations.
+#
+ac_default_prefix=/usr/local
+ac_clean_files=
+ac_config_libobj_dir=.
+LIBOBJS=
+cross_compiling=no
+subdirs=
+MFLAGS=
+MAKEFLAGS=
+
+# Identity of this package.
+PACKAGE_NAME=''
+PACKAGE_TARNAME=''
+PACKAGE_VERSION=''
+PACKAGE_STRING=''
+PACKAGE_BUGREPORT=''
+PACKAGE_URL=''
+
+ac_unique_file="Makefile.in"
+# Factoring default headers for most tests.
+ac_includes_default="\
+#include <stddef.h>
+#ifdef HAVE_STDIO_H
+# include <stdio.h>
+#endif
+#ifdef HAVE_STDLIB_H
+# include <stdlib.h>
+#endif
+#ifdef HAVE_STRING_H
+# include <string.h>
+#endif
+#ifdef HAVE_INTTYPES_H
+# include <inttypes.h>
+#endif
+#ifdef HAVE_STDINT_H
+# include <stdint.h>
+#endif
+#ifdef HAVE_STRINGS_H
+# include <strings.h>
+#endif
+#ifdef HAVE_SYS_TYPES_H
+# include <sys/types.h>
+#endif
+#ifdef HAVE_SYS_STAT_H
+# include <sys/stat.h>
+#endif
+#ifdef HAVE_UNISTD_H
+# include <unistd.h>
+#endif"
+
+ac_header_c_list=
+ac_subst_vars='LTLIBOBJS
+LIBOBJS
+cfgoutputs_out
+cfgoutputs_in
+cfghdrs_out
+cfghdrs_in
+enable_initial_exec_tls
+enable_zone_allocator
+enable_tls
+enable_lazy_lock
+libdl
+enable_uaf_detection
+enable_opt_size_checks
+enable_opt_safety_checks
+enable_readlinkat
+enable_log
+enable_cache_oblivious
+enable_xmalloc
+enable_utrace
+enable_fill
+enable_prof
+enable_experimental_smallocx
+enable_stats
+enable_debug
+je_
+install_suffix
+private_namespace
+JEMALLOC_CPREFIX
+JEMALLOC_PREFIX
+enable_static
+enable_shared
+enable_doc
+AUTOCONF
+LD
+RANLIB
+INSTALL_DATA
+INSTALL_SCRIPT
+INSTALL_PROGRAM
+enable_autogen
+RPATH_EXTRA
+LM
+CC_MM
+DUMP_SYMS
+AROUT
+ARFLAGS
+MKLIB
+TEST_LD_MODE
+LDTARGET
+CTARGET
+PIC_CFLAGS
+SOREV
+EXTRA_LDFLAGS
+DSO_LDFLAGS
+link_whole_archive
+libprefix
+exe
+a
+o
+importlib
+so
+LD_PRELOAD_VAR
+RPATH
+abi
+jemalloc_version_gid
+jemalloc_version_nrev
+jemalloc_version_bugfix
+jemalloc_version_minor
+jemalloc_version_major
+jemalloc_version
+AWK
+NM
+AR
+host_os
+host_vendor
+host_cpu
+host
+build_os
+build_vendor
+build_cpu
+build
+EXTRA_CXXFLAGS
+SPECIFIED_CXXFLAGS
+CONFIGURE_CXXFLAGS
+enable_cxx
+HAVE_CXX14
+HAVE_CXX17
+ac_ct_CXX
+CXXFLAGS
+CXX
+CPP
+EXTRA_CFLAGS
+SPECIFIED_CFLAGS
+CONFIGURE_CFLAGS
+OBJEXT
+EXEEXT
+ac_ct_CC
+CPPFLAGS
+LDFLAGS
+CFLAGS
+CC
+XSLROOT
+XSLTPROC
+MANDIR
+DATADIR
+LIBDIR
+INCLUDEDIR
+BINDIR
+PREFIX
+abs_objroot
+objroot
+abs_srcroot
+srcroot
+rev
+CONFIG
+target_alias
+host_alias
+build_alias
+LIBS
+ECHO_T
+ECHO_N
+ECHO_C
+DEFS
+mandir
+localedir
+libdir
+psdir
+pdfdir
+dvidir
+htmldir
+infodir
+docdir
+oldincludedir
+includedir
+runstatedir
+localstatedir
+sharedstatedir
+sysconfdir
+datadir
+datarootdir
+libexecdir
+sbindir
+bindir
+program_transform_name
+prefix
+exec_prefix
+PACKAGE_URL
+PACKAGE_BUGREPORT
+PACKAGE_STRING
+PACKAGE_VERSION
+PACKAGE_TARNAME
+PACKAGE_NAME
+PATH_SEPARATOR
+SHELL'
+ac_subst_files=''
+ac_user_opts='
+enable_option_checking
+with_xslroot
+enable_cxx
+with_lg_vaddr
+with_version
+with_rpath
+enable_autogen
+enable_doc
+enable_shared
+enable_static
+with_mangling
+with_jemalloc_prefix
+with_export
+with_private_namespace
+with_install_suffix
+with_malloc_conf
+enable_debug
+enable_stats
+enable_experimental_smallocx
+enable_prof
+enable_prof_libunwind
+with_static_libunwind
+enable_prof_libgcc
+enable_prof_gcc
+enable_fill
+enable_utrace
+enable_xmalloc
+enable_cache_oblivious
+enable_log
+enable_readlinkat
+enable_opt_safety_checks
+enable_opt_size_checks
+enable_uaf_detection
+with_lg_quantum
+with_lg_slab_maxregs
+with_lg_page
+with_lg_hugepage
+enable_libdl
+enable_syscall
+enable_lazy_lock
+enable_zone_allocator
+enable_initial_exec_tls
+'
+      ac_precious_vars='build_alias
+host_alias
+target_alias
+CC
+CFLAGS
+LDFLAGS
+LIBS
+CPPFLAGS
+CPP
+CXX
+CXXFLAGS
+CCC'
+
+
+# Initialize some variables set by options.
+ac_init_help=
+ac_init_version=false
+ac_unrecognized_opts=
+ac_unrecognized_sep=
+# The variables have the same names as the options, with
+# dashes changed to underlines.
+cache_file=/dev/null
+exec_prefix=NONE
+no_create=
+no_recursion=
+prefix=NONE
+program_prefix=NONE
+program_suffix=NONE
+program_transform_name=s,x,x,
+silent=
+site=
+srcdir=
+verbose=
+x_includes=NONE
+x_libraries=NONE
+
+# Installation directory options.
+# These are left unexpanded so users can "make install exec_prefix=/foo"
+# and all the variables that are supposed to be based on exec_prefix
+# by default will actually change.
+# Use braces instead of parens because sh, perl, etc. also accept them.
+# (The list follows the same order as the GNU Coding Standards.)
+bindir='${exec_prefix}/bin'
+sbindir='${exec_prefix}/sbin'
+libexecdir='${exec_prefix}/libexec'
+datarootdir='${prefix}/share'
+datadir='${datarootdir}'
+sysconfdir='${prefix}/etc'
+sharedstatedir='${prefix}/com'
+localstatedir='${prefix}/var'
+runstatedir='${localstatedir}/run'
+includedir='${prefix}/include'
+oldincludedir='/usr/include'
+docdir='${datarootdir}/doc/${PACKAGE}'
+infodir='${datarootdir}/info'
+htmldir='${docdir}'
+dvidir='${docdir}'
+pdfdir='${docdir}'
+psdir='${docdir}'
+libdir='${exec_prefix}/lib'
+localedir='${datarootdir}/locale'
+mandir='${datarootdir}/man'
+
+ac_prev=
+ac_dashdash=
+for ac_option
+do
+  # If the previous option needs an argument, assign it.
+  if test -n "$ac_prev"; then
+    eval $ac_prev=\$ac_option
+    ac_prev=
+    continue
+  fi
+
+  case $ac_option in
+  *=?*) ac_optarg=`expr "X$ac_option" : '[^=]*=\(.*\)'` ;;
+  *=)   ac_optarg= ;;
+  *)    ac_optarg=yes ;;
+  esac
+
+  case $ac_dashdash$ac_option in
+  --)
+    ac_dashdash=yes ;;
+
+  -bindir | --bindir | --bindi | --bind | --bin | --bi)
+    ac_prev=bindir ;;
+  -bindir=* | --bindir=* | --bindi=* | --bind=* | --bin=* | --bi=*)
+    bindir=$ac_optarg ;;
+
+  -build | --build | --buil | --bui | --bu)
+    ac_prev=build_alias ;;
+  -build=* | --build=* | --buil=* | --bui=* | --bu=*)
+    build_alias=$ac_optarg ;;
+
+  -cache-file | --cache-file | --cache-fil | --cache-fi \
+  | --cache-f | --cache- | --cache | --cach | --cac | --ca | --c)
+    ac_prev=cache_file ;;
+  -cache-file=* | --cache-file=* | --cache-fil=* | --cache-fi=* \
+  | --cache-f=* | --cache-=* | --cache=* | --cach=* | --cac=* | --ca=* | --c=*)
+    cache_file=$ac_optarg ;;
+
+  --config-cache | -C)
+    cache_file=config.cache ;;
+
+  -datadir | --datadir | --datadi | --datad)
+    ac_prev=datadir ;;
+  -datadir=* | --datadir=* | --datadi=* | --datad=*)
+    datadir=$ac_optarg ;;
+
+  -datarootdir | --datarootdir | --datarootdi | --datarootd | --dataroot \
+  | --dataroo | --dataro | --datar)
+    ac_prev=datarootdir ;;
+  -datarootdir=* | --datarootdir=* | --datarootdi=* | --datarootd=* \
+  | --dataroot=* | --dataroo=* | --dataro=* | --datar=*)
+    datarootdir=$ac_optarg ;;
+
+  -disable-* | --disable-*)
+    ac_useropt=`expr "x$ac_option" : 'x-*disable-\(.*\)'`
+    # Reject names that are not valid shell variable names.
+    expr "x$ac_useropt" : ".*[^-+._$as_cr_alnum]" >/dev/null &&
+      as_fn_error $? "invalid feature name: \`$ac_useropt'"
+    ac_useropt_orig=$ac_useropt
+    ac_useropt=`printf "%s\n" "$ac_useropt" | sed 's/[-+.]/_/g'`
+    case $ac_user_opts in
+      *"
+"enable_$ac_useropt"
+"*) ;;
+      *) ac_unrecognized_opts="$ac_unrecognized_opts$ac_unrecognized_sep--disable-$ac_useropt_orig"
+	 ac_unrecognized_sep=', ';;
+    esac
+    eval enable_$ac_useropt=no ;;
+
+  -docdir | --docdir | --docdi | --doc | --do)
+    ac_prev=docdir ;;
+  -docdir=* | --docdir=* | --docdi=* | --doc=* | --do=*)
+    docdir=$ac_optarg ;;
+
+  -dvidir | --dvidir | --dvidi | --dvid | --dvi | --dv)
+    ac_prev=dvidir ;;
+  -dvidir=* | --dvidir=* | --dvidi=* | --dvid=* | --dvi=* | --dv=*)
+    dvidir=$ac_optarg ;;
+
+  -enable-* | --enable-*)
+    ac_useropt=`expr "x$ac_option" : 'x-*enable-\([^=]*\)'`
+    # Reject names that are not valid shell variable names.
+    expr "x$ac_useropt" : ".*[^-+._$as_cr_alnum]" >/dev/null &&
+      as_fn_error $? "invalid feature name: \`$ac_useropt'"
+    ac_useropt_orig=$ac_useropt
+    ac_useropt=`printf "%s\n" "$ac_useropt" | sed 's/[-+.]/_/g'`
+    case $ac_user_opts in
+      *"
+"enable_$ac_useropt"
+"*) ;;
+      *) ac_unrecognized_opts="$ac_unrecognized_opts$ac_unrecognized_sep--enable-$ac_useropt_orig"
+	 ac_unrecognized_sep=', ';;
+    esac
+    eval enable_$ac_useropt=\$ac_optarg ;;
+
+  -exec-prefix | --exec_prefix | --exec-prefix | --exec-prefi \
+  | --exec-pref | --exec-pre | --exec-pr | --exec-p | --exec- \
+  | --exec | --exe | --ex)
+    ac_prev=exec_prefix ;;
+  -exec-prefix=* | --exec_prefix=* | --exec-prefix=* | --exec-prefi=* \
+  | --exec-pref=* | --exec-pre=* | --exec-pr=* | --exec-p=* | --exec-=* \
+  | --exec=* | --exe=* | --ex=*)
+    exec_prefix=$ac_optarg ;;
+
+  -gas | --gas | --ga | --g)
+    # Obsolete; use --with-gas.
+    with_gas=yes ;;
+
+  -help | --help | --hel | --he | -h)
+    ac_init_help=long ;;
+  -help=r* | --help=r* | --hel=r* | --he=r* | -hr*)
+    ac_init_help=recursive ;;
+  -help=s* | --help=s* | --hel=s* | --he=s* | -hs*)
+    ac_init_help=short ;;
+
+  -host | --host | --hos | --ho)
+    ac_prev=host_alias ;;
+  -host=* | --host=* | --hos=* | --ho=*)
+    host_alias=$ac_optarg ;;
+
+  -htmldir | --htmldir | --htmldi | --htmld | --html | --htm | --ht)
+    ac_prev=htmldir ;;
+  -htmldir=* | --htmldir=* | --htmldi=* | --htmld=* | --html=* | --htm=* \
+  | --ht=*)
+    htmldir=$ac_optarg ;;
+
+  -includedir | --includedir | --includedi | --included | --include \
+  | --includ | --inclu | --incl | --inc)
+    ac_prev=includedir ;;
+  -includedir=* | --includedir=* | --includedi=* | --included=* | --include=* \
+  | --includ=* | --inclu=* | --incl=* | --inc=*)
+    includedir=$ac_optarg ;;
+
+  -infodir | --infodir | --infodi | --infod | --info | --inf)
+    ac_prev=infodir ;;
+  -infodir=* | --infodir=* | --infodi=* | --infod=* | --info=* | --inf=*)
+    infodir=$ac_optarg ;;
+
+  -libdir | --libdir | --libdi | --libd)
+    ac_prev=libdir ;;
+  -libdir=* | --libdir=* | --libdi=* | --libd=*)
+    libdir=$ac_optarg ;;
+
+  -libexecdir | --libexecdir | --libexecdi | --libexecd | --libexec \
+  | --libexe | --libex | --libe)
+    ac_prev=libexecdir ;;
+  -libexecdir=* | --libexecdir=* | --libexecdi=* | --libexecd=* | --libexec=* \
+  | --libexe=* | --libex=* | --libe=*)
+    libexecdir=$ac_optarg ;;
+
+  -localedir | --localedir | --localedi | --localed | --locale)
+    ac_prev=localedir ;;
+  -localedir=* | --localedir=* | --localedi=* | --localed=* | --locale=*)
+    localedir=$ac_optarg ;;
+
+  -localstatedir | --localstatedir | --localstatedi | --localstated \
+  | --localstate | --localstat | --localsta | --localst | --locals)
+    ac_prev=localstatedir ;;
+  -localstatedir=* | --localstatedir=* | --localstatedi=* | --localstated=* \
+  | --localstate=* | --localstat=* | --localsta=* | --localst=* | --locals=*)
+    localstatedir=$ac_optarg ;;
+
+  -mandir | --mandir | --mandi | --mand | --man | --ma | --m)
+    ac_prev=mandir ;;
+  -mandir=* | --mandir=* | --mandi=* | --mand=* | --man=* | --ma=* | --m=*)
+    mandir=$ac_optarg ;;
+
+  -nfp | --nfp | --nf)
+    # Obsolete; use --without-fp.
+    with_fp=no ;;
+
+  -no-create | --no-create | --no-creat | --no-crea | --no-cre \
+  | --no-cr | --no-c | -n)
+    no_create=yes ;;
+
+  -no-recursion | --no-recursion | --no-recursio | --no-recursi \
+  | --no-recurs | --no-recur | --no-recu | --no-rec | --no-re | --no-r)
+    no_recursion=yes ;;
+
+  -oldincludedir | --oldincludedir | --oldincludedi | --oldincluded \
+  | --oldinclude | --oldinclud | --oldinclu | --oldincl | --oldinc \
+  | --oldin | --oldi | --old | --ol | --o)
+    ac_prev=oldincludedir ;;
+  -oldincludedir=* | --oldincludedir=* | --oldincludedi=* | --oldincluded=* \
+  | --oldinclude=* | --oldinclud=* | --oldinclu=* | --oldincl=* | --oldinc=* \
+  | --oldin=* | --oldi=* | --old=* | --ol=* | --o=*)
+    oldincludedir=$ac_optarg ;;
+
+  -prefix | --prefix | --prefi | --pref | --pre | --pr | --p)
+    ac_prev=prefix ;;
+  -prefix=* | --prefix=* | --prefi=* | --pref=* | --pre=* | --pr=* | --p=*)
+    prefix=$ac_optarg ;;
+
+  -program-prefix | --program-prefix | --program-prefi | --program-pref \
+  | --program-pre | --program-pr | --program-p)
+    ac_prev=program_prefix ;;
+  -program-prefix=* | --program-prefix=* | --program-prefi=* \
+  | --program-pref=* | --program-pre=* | --program-pr=* | --program-p=*)
+    program_prefix=$ac_optarg ;;
+
+  -program-suffix | --program-suffix | --program-suffi | --program-suff \
+  | --program-suf | --program-su | --program-s)
+    ac_prev=program_suffix ;;
+  -program-suffix=* | --program-suffix=* | --program-suffi=* \
+  | --program-suff=* | --program-suf=* | --program-su=* | --program-s=*)
+    program_suffix=$ac_optarg ;;
+
+  -program-transform-name | --program-transform-name \
+  | --program-transform-nam | --program-transform-na \
+  | --program-transform-n | --program-transform- \
+  | --program-transform | --program-transfor \
+  | --program-transfo | --program-transf \
+  | --program-trans | --program-tran \
+  | --progr-tra | --program-tr | --program-t)
+    ac_prev=program_transform_name ;;
+  -program-transform-name=* | --program-transform-name=* \
+  | --program-transform-nam=* | --program-transform-na=* \
+  | --program-transform-n=* | --program-transform-=* \
+  | --program-transform=* | --program-transfor=* \
+  | --program-transfo=* | --program-transf=* \
+  | --program-trans=* | --program-tran=* \
+  | --progr-tra=* | --program-tr=* | --program-t=*)
+    program_transform_name=$ac_optarg ;;
+
+  -pdfdir | --pdfdir | --pdfdi | --pdfd | --pdf | --pd)
+    ac_prev=pdfdir ;;
+  -pdfdir=* | --pdfdir=* | --pdfdi=* | --pdfd=* | --pdf=* | --pd=*)
+    pdfdir=$ac_optarg ;;
+
+  -psdir | --psdir | --psdi | --psd | --ps)
+    ac_prev=psdir ;;
+  -psdir=* | --psdir=* | --psdi=* | --psd=* | --ps=*)
+    psdir=$ac_optarg ;;
+
+  -q | -quiet | --quiet | --quie | --qui | --qu | --q \
+  | -silent | --silent | --silen | --sile | --sil)
+    silent=yes ;;
+
+  -runstatedir | --runstatedir | --runstatedi | --runstated \
+  | --runstate | --runstat | --runsta | --runst | --runs \
+  | --run | --ru | --r)
+    ac_prev=runstatedir ;;
+  -runstatedir=* | --runstatedir=* | --runstatedi=* | --runstated=* \
+  | --runstate=* | --runstat=* | --runsta=* | --runst=* | --runs=* \
+  | --run=* | --ru=* | --r=*)
+    runstatedir=$ac_optarg ;;
+
+  -sbindir | --sbindir | --sbindi | --sbind | --sbin | --sbi | --sb)
+    ac_prev=sbindir ;;
+  -sbindir=* | --sbindir=* | --sbindi=* | --sbind=* | --sbin=* \
+  | --sbi=* | --sb=*)
+    sbindir=$ac_optarg ;;
+
+  -sharedstatedir | --sharedstatedir | --sharedstatedi \
+  | --sharedstated | --sharedstate | --sharedstat | --sharedsta \
+  | --sharedst | --shareds | --shared | --share | --shar \
+  | --sha | --sh)
+    ac_prev=sharedstatedir ;;
+  -sharedstatedir=* | --sharedstatedir=* | --sharedstatedi=* \
+  | --sharedstated=* | --sharedstate=* | --sharedstat=* | --sharedsta=* \
+  | --sharedst=* | --shareds=* | --shared=* | --share=* | --shar=* \
+  | --sha=* | --sh=*)
+    sharedstatedir=$ac_optarg ;;
+
+  -site | --site | --sit)
+    ac_prev=site ;;
+  -site=* | --site=* | --sit=*)
+    site=$ac_optarg ;;
+
+  -srcdir | --srcdir | --srcdi | --srcd | --src | --sr)
+    ac_prev=srcdir ;;
+  -srcdir=* | --srcdir=* | --srcdi=* | --srcd=* | --src=* | --sr=*)
+    srcdir=$ac_optarg ;;
+
+  -sysconfdir | --sysconfdir | --sysconfdi | --sysconfd | --sysconf \
+  | --syscon | --sysco | --sysc | --sys | --sy)
+    ac_prev=sysconfdir ;;
+  -sysconfdir=* | --sysconfdir=* | --sysconfdi=* | --sysconfd=* | --sysconf=* \
+  | --syscon=* | --sysco=* | --sysc=* | --sys=* | --sy=*)
+    sysconfdir=$ac_optarg ;;
+
+  -target | --target | --targe | --targ | --tar | --ta | --t)
+    ac_prev=target_alias ;;
+  -target=* | --target=* | --targe=* | --targ=* | --tar=* | --ta=* | --t=*)
+    target_alias=$ac_optarg ;;
+
+  -v | -verbose | --verbose | --verbos | --verbo | --verb)
+    verbose=yes ;;
+
+  -version | --version | --versio | --versi | --vers | -V)
+    ac_init_version=: ;;
+
+  -with-* | --with-*)
+    ac_useropt=`expr "x$ac_option" : 'x-*with-\([^=]*\)'`
+    # Reject names that are not valid shell variable names.
+    expr "x$ac_useropt" : ".*[^-+._$as_cr_alnum]" >/dev/null &&
+      as_fn_error $? "invalid package name: \`$ac_useropt'"
+    ac_useropt_orig=$ac_useropt
+    ac_useropt=`printf "%s\n" "$ac_useropt" | sed 's/[-+.]/_/g'`
+    case $ac_user_opts in
+      *"
+"with_$ac_useropt"
+"*) ;;
+      *) ac_unrecognized_opts="$ac_unrecognized_opts$ac_unrecognized_sep--with-$ac_useropt_orig"
+	 ac_unrecognized_sep=', ';;
+    esac
+    eval with_$ac_useropt=\$ac_optarg ;;
+
+  -without-* | --without-*)
+    ac_useropt=`expr "x$ac_option" : 'x-*without-\(.*\)'`
+    # Reject names that are not valid shell variable names.
+    expr "x$ac_useropt" : ".*[^-+._$as_cr_alnum]" >/dev/null &&
+      as_fn_error $? "invalid package name: \`$ac_useropt'"
+    ac_useropt_orig=$ac_useropt
+    ac_useropt=`printf "%s\n" "$ac_useropt" | sed 's/[-+.]/_/g'`
+    case $ac_user_opts in
+      *"
+"with_$ac_useropt"
+"*) ;;
+      *) ac_unrecognized_opts="$ac_unrecognized_opts$ac_unrecognized_sep--without-$ac_useropt_orig"
+	 ac_unrecognized_sep=', ';;
+    esac
+    eval with_$ac_useropt=no ;;
+
+  --x)
+    # Obsolete; use --with-x.
+    with_x=yes ;;
+
+  -x-includes | --x-includes | --x-include | --x-includ | --x-inclu \
+  | --x-incl | --x-inc | --x-in | --x-i)
+    ac_prev=x_includes ;;
+  -x-includes=* | --x-includes=* | --x-include=* | --x-includ=* | --x-inclu=* \
+  | --x-incl=* | --x-inc=* | --x-in=* | --x-i=*)
+    x_includes=$ac_optarg ;;
+
+  -x-libraries | --x-libraries | --x-librarie | --x-librari \
+  | --x-librar | --x-libra | --x-libr | --x-lib | --x-li | --x-l)
+    ac_prev=x_libraries ;;
+  -x-libraries=* | --x-libraries=* | --x-librarie=* | --x-librari=* \
+  | --x-librar=* | --x-libra=* | --x-libr=* | --x-lib=* | --x-li=* | --x-l=*)
+    x_libraries=$ac_optarg ;;
+
+  -*) as_fn_error $? "unrecognized option: \`$ac_option'
+Try \`$0 --help' for more information"
+    ;;
+
+  *=*)
+    ac_envvar=`expr "x$ac_option" : 'x\([^=]*\)='`
+    # Reject names that are not valid shell variable names.
+    case $ac_envvar in #(
+      '' | [0-9]* | *[!_$as_cr_alnum]* )
+      as_fn_error $? "invalid variable name: \`$ac_envvar'" ;;
+    esac
+    eval $ac_envvar=\$ac_optarg
+    export $ac_envvar ;;
+
+  *)
+    # FIXME: should be removed in autoconf 3.0.
+    printf "%s\n" "$as_me: WARNING: you should use --build, --host, --target" >&2
+    expr "x$ac_option" : ".*[^-._$as_cr_alnum]" >/dev/null &&
+      printf "%s\n" "$as_me: WARNING: invalid host type: $ac_option" >&2
+    : "${build_alias=$ac_option} ${host_alias=$ac_option} ${target_alias=$ac_option}"
+    ;;
+
+  esac
+done
+
+if test -n "$ac_prev"; then
+  ac_option=--`echo $ac_prev | sed 's/_/-/g'`
+  as_fn_error $? "missing argument to $ac_option"
+fi
+
+if test -n "$ac_unrecognized_opts"; then
+  case $enable_option_checking in
+    no) ;;
+    fatal) as_fn_error $? "unrecognized options: $ac_unrecognized_opts" ;;
+    *)     printf "%s\n" "$as_me: WARNING: unrecognized options: $ac_unrecognized_opts" >&2 ;;
+  esac
+fi
+
+# Check all directory arguments for consistency.
+for ac_var in	exec_prefix prefix bindir sbindir libexecdir datarootdir \
+		datadir sysconfdir sharedstatedir localstatedir includedir \
+		oldincludedir docdir infodir htmldir dvidir pdfdir psdir \
+		libdir localedir mandir runstatedir
+do
+  eval ac_val=\$$ac_var
+  # Remove trailing slashes.
+  case $ac_val in
+    */ )
+      ac_val=`expr "X$ac_val" : 'X\(.*[^/]\)' \| "X$ac_val" : 'X\(.*\)'`
+      eval $ac_var=\$ac_val;;
+  esac
+  # Be sure to have absolute directory names.
+  case $ac_val in
+    [\\/$]* | ?:[\\/]* )  continue;;
+    NONE | '' ) case $ac_var in *prefix ) continue;; esac;;
+  esac
+  as_fn_error $? "expected an absolute directory name for --$ac_var: $ac_val"
+done
+
+# There might be people who depend on the old broken behavior: `$host'
+# used to hold the argument of --host etc.
+# FIXME: To remove some day.
+build=$build_alias
+host=$host_alias
+target=$target_alias
+
+# FIXME: To remove some day.
+if test "x$host_alias" != x; then
+  if test "x$build_alias" = x; then
+    cross_compiling=maybe
+  elif test "x$build_alias" != "x$host_alias"; then
+    cross_compiling=yes
+  fi
+fi
+
+ac_tool_prefix=
+test -n "$host_alias" && ac_tool_prefix=$host_alias-
+
+test "$silent" = yes && exec 6>/dev/null
+
+
+ac_pwd=`pwd` && test -n "$ac_pwd" &&
+ac_ls_di=`ls -di .` &&
+ac_pwd_ls_di=`cd "$ac_pwd" && ls -di .` ||
+  as_fn_error $? "working directory cannot be determined"
+test "X$ac_ls_di" = "X$ac_pwd_ls_di" ||
+  as_fn_error $? "pwd does not report name of working directory"
+
+
+# Find the source files, if location was not specified.
+if test -z "$srcdir"; then
+  ac_srcdir_defaulted=yes
+  # Try the directory containing this script, then the parent directory.
+  ac_confdir=`$as_dirname -- "$as_myself" ||
+$as_expr X"$as_myself" : 'X\(.*[^/]\)//*[^/][^/]*/*$' \| \
+	 X"$as_myself" : 'X\(//\)[^/]' \| \
+	 X"$as_myself" : 'X\(//\)$' \| \
+	 X"$as_myself" : 'X\(/\)' \| . 2>/dev/null ||
+printf "%s\n" X"$as_myself" |
+    sed '/^X\(.*[^/]\)\/\/*[^/][^/]*\/*$/{
+	    s//\1/
+	    q
+	  }
+	  /^X\(\/\/\)[^/].*/{
+	    s//\1/
+	    q
+	  }
+	  /^X\(\/\/\)$/{
+	    s//\1/
+	    q
+	  }
+	  /^X\(\/\).*/{
+	    s//\1/
+	    q
+	  }
+	  s/.*/./; q'`
+  srcdir=$ac_confdir
+  if test ! -r "$srcdir/$ac_unique_file"; then
+    srcdir=..
+  fi
+else
+  ac_srcdir_defaulted=no
+fi
+if test ! -r "$srcdir/$ac_unique_file"; then
+  test "$ac_srcdir_defaulted" = yes && srcdir="$ac_confdir or .."
+  as_fn_error $? "cannot find sources ($ac_unique_file) in $srcdir"
+fi
+ac_msg="sources are in $srcdir, but \`cd $srcdir' does not work"
+ac_abs_confdir=`(
+	cd "$srcdir" && test -r "./$ac_unique_file" || as_fn_error $? "$ac_msg"
+	pwd)`
+# When building in place, set srcdir=.
+if test "$ac_abs_confdir" = "$ac_pwd"; then
+  srcdir=.
+fi
+# Remove unnecessary trailing slashes from srcdir.
+# Double slashes in file names in object file debugging info
+# mess up M-x gdb in Emacs.
+case $srcdir in
+*/) srcdir=`expr "X$srcdir" : 'X\(.*[^/]\)' \| "X$srcdir" : 'X\(.*\)'`;;
+esac
+for ac_var in $ac_precious_vars; do
+  eval ac_env_${ac_var}_set=\${${ac_var}+set}
+  eval ac_env_${ac_var}_value=\$${ac_var}
+  eval ac_cv_env_${ac_var}_set=\${${ac_var}+set}
+  eval ac_cv_env_${ac_var}_value=\$${ac_var}
+done
+
+#
+# Report the --help message.
+#
+if test "$ac_init_help" = "long"; then
+  # Omit some internal or obsolete options to make the list less imposing.
+  # This message is too long to be a string in the A/UX 3.1 sh.
+  cat <<_ACEOF
+\`configure' configures this package to adapt to many kinds of systems.
+
+Usage: $0 [OPTION]... [VAR=VALUE]...
+
+To assign environment variables (e.g., CC, CFLAGS...), specify them as
+VAR=VALUE.  See below for descriptions of some of the useful variables.
+
+Defaults for the options are specified in brackets.
+
+Configuration:
+  -h, --help              display this help and exit
+      --help=short        display options specific to this package
+      --help=recursive    display the short help of all the included packages
+  -V, --version           display version information and exit
+  -q, --quiet, --silent   do not print \`checking ...' messages
+      --cache-file=FILE   cache test results in FILE [disabled]
+  -C, --config-cache      alias for \`--cache-file=config.cache'
+  -n, --no-create         do not create output files
+      --srcdir=DIR        find the sources in DIR [configure dir or \`..']
+
+Installation directories:
+  --prefix=PREFIX         install architecture-independent files in PREFIX
+                          [$ac_default_prefix]
+  --exec-prefix=EPREFIX   install architecture-dependent files in EPREFIX
+                          [PREFIX]
+
+By default, \`make install' will install all the files in
+\`$ac_default_prefix/bin', \`$ac_default_prefix/lib' etc.  You can specify
+an installation prefix other than \`$ac_default_prefix' using \`--prefix',
+for instance \`--prefix=\$HOME'.
+
+For better control, use the options below.
+
+Fine tuning of the installation directories:
+  --bindir=DIR            user executables [EPREFIX/bin]
+  --sbindir=DIR           system admin executables [EPREFIX/sbin]
+  --libexecdir=DIR        program executables [EPREFIX/libexec]
+  --sysconfdir=DIR        read-only single-machine data [PREFIX/etc]
+  --sharedstatedir=DIR    modifiable architecture-independent data [PREFIX/com]
+  --localstatedir=DIR     modifiable single-machine data [PREFIX/var]
+  --runstatedir=DIR       modifiable per-process data [LOCALSTATEDIR/run]
+  --libdir=DIR            object code libraries [EPREFIX/lib]
+  --includedir=DIR        C header files [PREFIX/include]
+  --oldincludedir=DIR     C header files for non-gcc [/usr/include]
+  --datarootdir=DIR       read-only arch.-independent data root [PREFIX/share]
+  --datadir=DIR           read-only architecture-independent data [DATAROOTDIR]
+  --infodir=DIR           info documentation [DATAROOTDIR/info]
+  --localedir=DIR         locale-dependent data [DATAROOTDIR/locale]
+  --mandir=DIR            man documentation [DATAROOTDIR/man]
+  --docdir=DIR            documentation root [DATAROOTDIR/doc/PACKAGE]
+  --htmldir=DIR           html documentation [DOCDIR]
+  --dvidir=DIR            dvi documentation [DOCDIR]
+  --pdfdir=DIR            pdf documentation [DOCDIR]
+  --psdir=DIR             ps documentation [DOCDIR]
+_ACEOF
+
+  cat <<\_ACEOF
+
+System types:
+  --build=BUILD     configure for building on BUILD [guessed]
+  --host=HOST       cross-compile to build programs to run on HOST [BUILD]
+_ACEOF
+fi
+
+if test -n "$ac_init_help"; then
+
+  cat <<\_ACEOF
+
+Optional Features:
+  --disable-option-checking  ignore unrecognized --enable/--with options
+  --disable-FEATURE       do not include FEATURE (same as --enable-FEATURE=no)
+  --enable-FEATURE[=ARG]  include FEATURE [ARG=yes]
+  --disable-cxx           Disable C++ integration
+  --enable-autogen        Automatically regenerate configure output
+  --enable-doc            Build documentation
+  --enable-shared         Build shared libaries
+  --enable-static         Build static libaries
+  --enable-debug          Build debugging code
+  --disable-stats         Disable statistics calculation/reporting
+  --enable-experimental-smallocx
+                          Enable experimental smallocx API
+  --enable-prof           Enable allocation profiling
+  --enable-prof-libunwind Use libunwind for backtracing
+  --disable-prof-libgcc   Do not use libgcc for backtracing
+  --disable-prof-gcc      Do not use gcc intrinsics for backtracing
+  --disable-fill          Disable support for junk/zero filling
+  --enable-utrace         Enable utrace(2)-based tracing
+  --enable-xmalloc        Support xmalloc option
+  --disable-cache-oblivious
+                          Disable support for cache-oblivious allocation
+                          alignment
+  --enable-log            Support debug logging
+  --enable-readlinkat     Use readlinkat over readlink
+  --enable-opt-safety-checks
+                          Perform certain low-overhead checks, even in opt
+                          mode
+  --enable-opt-size-checks
+                          Perform sized-deallocation argument checks, even in
+                          opt mode
+  --enable-uaf-detection  Allow sampled junk-filling on deallocation to detect
+                          use-after-free
+  --disable-libdl         Do not use libdl
+  --disable-syscall       Disable use of syscall(2)
+  --enable-lazy-lock      Enable lazy locking (only lock when multi-threaded)
+  --disable-zone-allocator
+                          Disable zone allocator for Darwin
+  --disable-initial-exec-tls
+                          Disable the initial-exec tls model
+
+Optional Packages:
+  --with-PACKAGE[=ARG]    use PACKAGE [ARG=yes]
+  --without-PACKAGE       do not use PACKAGE (same as --with-PACKAGE=no)
+  --with-xslroot=<path>   XSL stylesheet root path
+  --with-lg-vaddr=<lg-vaddr>
+                          Number of significant virtual address bits
+  --with-version=<major>.<minor>.<bugfix>-<nrev>-g<gid>
+                          Version string
+  --with-rpath=<rpath>    Colon-separated rpath (ELF systems only)
+  --with-mangling=<map>   Mangle symbols in <map>
+  --with-jemalloc-prefix=<prefix>
+                          Prefix to prepend to all public APIs
+  --without-export        disable exporting jemalloc public APIs
+  --with-private-namespace=<prefix>
+                          Prefix to prepend to all library-private APIs
+  --with-install-suffix=<suffix>
+                          Suffix to append to all installed files
+  --with-malloc-conf=<malloc_conf>
+                          config.malloc_conf options string
+  --with-static-libunwind=<libunwind.a>
+                          Path to static libunwind library; use rather than
+                          dynamically linking
+  --with-lg-quantum=<lg-quantum>
+                          Base 2 log of minimum allocation alignment
+  --with-lg-slab-maxregs=<lg-slab-maxregs>
+                          Base 2 log of maximum number of regions in a slab
+                          (used with malloc_conf slab_sizes)
+  --with-lg-page=<lg-page>
+                          Base 2 log of system page size
+  --with-lg-hugepage=<lg-hugepage>
+                          Base 2 log of system huge page size
+
+Some influential environment variables:
+  CC          C compiler command
+  CFLAGS      C compiler flags
+  LDFLAGS     linker flags, e.g. -L<lib dir> if you have libraries in a
+              nonstandard directory <lib dir>
+  LIBS        libraries to pass to the linker, e.g. -l<library>
+  CPPFLAGS    (Objective) C/C++ preprocessor flags, e.g. -I<include dir> if
+              you have headers in a nonstandard directory <include dir>
+  CPP         C preprocessor
+  CXX         C++ compiler command
+  CXXFLAGS    C++ compiler flags
+
+Use these variables to override the choices made by `configure' or to help
+it to find libraries and programs with nonstandard names/locations.
+
+Report bugs to the package provider.
+_ACEOF
+ac_status=$?
+fi
+
+if test "$ac_init_help" = "recursive"; then
+  # If there are subdirs, report their specific --help.
+  for ac_dir in : $ac_subdirs_all; do test "x$ac_dir" = x: && continue
+    test -d "$ac_dir" ||
+      { cd "$srcdir" && ac_pwd=`pwd` && srcdir=. && test -d "$ac_dir"; } ||
+      continue
+    ac_builddir=.
+
+case "$ac_dir" in
+.) ac_dir_suffix= ac_top_builddir_sub=. ac_top_build_prefix= ;;
+*)
+  ac_dir_suffix=/`printf "%s\n" "$ac_dir" | sed 's|^\.[\\/]||'`
+  # A ".." for each directory in $ac_dir_suffix.
+  ac_top_builddir_sub=`printf "%s\n" "$ac_dir_suffix" | sed 's|/[^\\/]*|/..|g;s|/||'`
+  case $ac_top_builddir_sub in
+  "") ac_top_builddir_sub=. ac_top_build_prefix= ;;
+  *)  ac_top_build_prefix=$ac_top_builddir_sub/ ;;
+  esac ;;
+esac
+ac_abs_top_builddir=$ac_pwd
+ac_abs_builddir=$ac_pwd$ac_dir_suffix
+# for backward compatibility:
+ac_top_builddir=$ac_top_build_prefix
+
+case $srcdir in
+  .)  # We are building in place.
+    ac_srcdir=.
+    ac_top_srcdir=$ac_top_builddir_sub
+    ac_abs_top_srcdir=$ac_pwd ;;
+  [\\/]* | ?:[\\/]* )  # Absolute name.
+    ac_srcdir=$srcdir$ac_dir_suffix;
+    ac_top_srcdir=$srcdir
+    ac_abs_top_srcdir=$srcdir ;;
+  *) # Relative name.
+    ac_srcdir=$ac_top_build_prefix$srcdir$ac_dir_suffix
+    ac_top_srcdir=$ac_top_build_prefix$srcdir
+    ac_abs_top_srcdir=$ac_pwd/$srcdir ;;
+esac
+ac_abs_srcdir=$ac_abs_top_srcdir$ac_dir_suffix
+
+    cd "$ac_dir" || { ac_status=$?; continue; }
+    # Check for configure.gnu first; this name is used for a wrapper for
+    # Metaconfig's "Configure" on case-insensitive file systems.
+    if test -f "$ac_srcdir/configure.gnu"; then
+      echo &&
+      $SHELL "$ac_srcdir/configure.gnu" --help=recursive
+    elif test -f "$ac_srcdir/configure"; then
+      echo &&
+      $SHELL "$ac_srcdir/configure" --help=recursive
+    else
+      printf "%s\n" "$as_me: WARNING: no configuration information is in $ac_dir" >&2
+    fi || ac_status=$?
+    cd "$ac_pwd" || { ac_status=$?; break; }
+  done
+fi
+
+test -n "$ac_init_help" && exit $ac_status
+if $ac_init_version; then
+  cat <<\_ACEOF
+configure
+generated by GNU Autoconf 2.71
+
+Copyright (C) 2021 Free Software Foundation, Inc.
+This configure script is free software; the Free Software Foundation
+gives unlimited permission to copy, distribute and modify it.
+_ACEOF
+  exit
+fi
+
+## ------------------------ ##
+## Autoconf initialization. ##
+## ------------------------ ##
+
+# ac_fn_c_try_compile LINENO
+# --------------------------
+# Try to compile conftest.$ac_ext, and return whether this succeeded.
+ac_fn_c_try_compile ()
+{
+  as_lineno=${as_lineno-"$1"} as_lineno_stack=as_lineno_stack=$as_lineno_stack
+  rm -f conftest.$ac_objext conftest.beam
+  if { { ac_try="$ac_compile"
+case "(($ac_try" in
+  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
+  *) ac_try_echo=$ac_try;;
+esac
+eval ac_try_echo="\"\$as_me:${as_lineno-$LINENO}: $ac_try_echo\""
+printf "%s\n" "$ac_try_echo"; } >&5
+  (eval "$ac_compile") 2>conftest.err
+  ac_status=$?
+  if test -s conftest.err; then
+    grep -v '^ *+' conftest.err >conftest.er1
+    cat conftest.er1 >&5
+    mv -f conftest.er1 conftest.err
+  fi
+  printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; } && {
+	 test -z "$ac_c_werror_flag" ||
+	 test ! -s conftest.err
+       } && test -s conftest.$ac_objext
+then :
+  ac_retval=0
+else $as_nop
+  printf "%s\n" "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+	ac_retval=1
+fi
+  eval $as_lineno_stack; ${as_lineno_stack:+:} unset as_lineno
+  as_fn_set_status $ac_retval
+
+} # ac_fn_c_try_compile
+
+# ac_fn_c_try_cpp LINENO
+# ----------------------
+# Try to preprocess conftest.$ac_ext, and return whether this succeeded.
+ac_fn_c_try_cpp ()
+{
+  as_lineno=${as_lineno-"$1"} as_lineno_stack=as_lineno_stack=$as_lineno_stack
+  if { { ac_try="$ac_cpp conftest.$ac_ext"
+case "(($ac_try" in
+  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
+  *) ac_try_echo=$ac_try;;
+esac
+eval ac_try_echo="\"\$as_me:${as_lineno-$LINENO}: $ac_try_echo\""
+printf "%s\n" "$ac_try_echo"; } >&5
+  (eval "$ac_cpp conftest.$ac_ext") 2>conftest.err
+  ac_status=$?
+  if test -s conftest.err; then
+    grep -v '^ *+' conftest.err >conftest.er1
+    cat conftest.er1 >&5
+    mv -f conftest.er1 conftest.err
+  fi
+  printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; } > conftest.i && {
+	 test -z "$ac_c_preproc_warn_flag$ac_c_werror_flag" ||
+	 test ! -s conftest.err
+       }
+then :
+  ac_retval=0
+else $as_nop
+  printf "%s\n" "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+    ac_retval=1
+fi
+  eval $as_lineno_stack; ${as_lineno_stack:+:} unset as_lineno
+  as_fn_set_status $ac_retval
+
+} # ac_fn_c_try_cpp
+
+# ac_fn_cxx_try_compile LINENO
+# ----------------------------
+# Try to compile conftest.$ac_ext, and return whether this succeeded.
+ac_fn_cxx_try_compile ()
+{
+  as_lineno=${as_lineno-"$1"} as_lineno_stack=as_lineno_stack=$as_lineno_stack
+  rm -f conftest.$ac_objext conftest.beam
+  if { { ac_try="$ac_compile"
+case "(($ac_try" in
+  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
+  *) ac_try_echo=$ac_try;;
+esac
+eval ac_try_echo="\"\$as_me:${as_lineno-$LINENO}: $ac_try_echo\""
+printf "%s\n" "$ac_try_echo"; } >&5
+  (eval "$ac_compile") 2>conftest.err
+  ac_status=$?
+  if test -s conftest.err; then
+    grep -v '^ *+' conftest.err >conftest.er1
+    cat conftest.er1 >&5
+    mv -f conftest.er1 conftest.err
+  fi
+  printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; } && {
+	 test -z "$ac_cxx_werror_flag" ||
+	 test ! -s conftest.err
+       } && test -s conftest.$ac_objext
+then :
+  ac_retval=0
+else $as_nop
+  printf "%s\n" "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+	ac_retval=1
+fi
+  eval $as_lineno_stack; ${as_lineno_stack:+:} unset as_lineno
+  as_fn_set_status $ac_retval
+
+} # ac_fn_cxx_try_compile
+
+# ac_fn_c_try_link LINENO
+# -----------------------
+# Try to link conftest.$ac_ext, and return whether this succeeded.
+ac_fn_c_try_link ()
+{
+  as_lineno=${as_lineno-"$1"} as_lineno_stack=as_lineno_stack=$as_lineno_stack
+  rm -f conftest.$ac_objext conftest.beam conftest$ac_exeext
+  if { { ac_try="$ac_link"
+case "(($ac_try" in
+  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
+  *) ac_try_echo=$ac_try;;
+esac
+eval ac_try_echo="\"\$as_me:${as_lineno-$LINENO}: $ac_try_echo\""
+printf "%s\n" "$ac_try_echo"; } >&5
+  (eval "$ac_link") 2>conftest.err
+  ac_status=$?
+  if test -s conftest.err; then
+    grep -v '^ *+' conftest.err >conftest.er1
+    cat conftest.er1 >&5
+    mv -f conftest.er1 conftest.err
+  fi
+  printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; } && {
+	 test -z "$ac_c_werror_flag" ||
+	 test ! -s conftest.err
+       } && test -s conftest$ac_exeext && {
+	 test "$cross_compiling" = yes ||
+	 test -x conftest$ac_exeext
+       }
+then :
+  ac_retval=0
+else $as_nop
+  printf "%s\n" "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+	ac_retval=1
+fi
+  # Delete the IPA/IPO (Inter Procedural Analysis/Optimization) information
+  # created by the PGI compiler (conftest_ipa8_conftest.oo), as it would
+  # interfere with the next link command; also delete a directory that is
+  # left behind by Apple's compiler.  We do this before executing the actions.
+  rm -rf conftest.dSYM conftest_ipa8_conftest.oo
+  eval $as_lineno_stack; ${as_lineno_stack:+:} unset as_lineno
+  as_fn_set_status $ac_retval
+
+} # ac_fn_c_try_link
+
+# ac_fn_c_try_run LINENO
+# ----------------------
+# Try to run conftest.$ac_ext, and return whether this succeeded. Assumes that
+# executables *can* be run.
+ac_fn_c_try_run ()
+{
+  as_lineno=${as_lineno-"$1"} as_lineno_stack=as_lineno_stack=$as_lineno_stack
+  if { { ac_try="$ac_link"
+case "(($ac_try" in
+  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
+  *) ac_try_echo=$ac_try;;
+esac
+eval ac_try_echo="\"\$as_me:${as_lineno-$LINENO}: $ac_try_echo\""
+printf "%s\n" "$ac_try_echo"; } >&5
+  (eval "$ac_link") 2>&5
+  ac_status=$?
+  printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; } && { ac_try='./conftest$ac_exeext'
+  { { case "(($ac_try" in
+  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
+  *) ac_try_echo=$ac_try;;
+esac
+eval ac_try_echo="\"\$as_me:${as_lineno-$LINENO}: $ac_try_echo\""
+printf "%s\n" "$ac_try_echo"; } >&5
+  (eval "$ac_try") 2>&5
+  ac_status=$?
+  printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; }; }
+then :
+  ac_retval=0
+else $as_nop
+  printf "%s\n" "$as_me: program exited with status $ac_status" >&5
+       printf "%s\n" "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+       ac_retval=$ac_status
+fi
+  rm -rf conftest.dSYM conftest_ipa8_conftest.oo
+  eval $as_lineno_stack; ${as_lineno_stack:+:} unset as_lineno
+  as_fn_set_status $ac_retval
+
+} # ac_fn_c_try_run
+
+# ac_fn_c_check_header_compile LINENO HEADER VAR INCLUDES
+# -------------------------------------------------------
+# Tests whether HEADER exists and can be compiled using the include files in
+# INCLUDES, setting the cache variable VAR accordingly.
+ac_fn_c_check_header_compile ()
+{
+  as_lineno=${as_lineno-"$1"} as_lineno_stack=as_lineno_stack=$as_lineno_stack
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $2" >&5
+printf %s "checking for $2... " >&6; }
+if eval test \${$3+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+$4
+#include <$2>
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  eval "$3=yes"
+else $as_nop
+  eval "$3=no"
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+eval ac_res=\$$3
+	       { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_res" >&5
+printf "%s\n" "$ac_res" >&6; }
+  eval $as_lineno_stack; ${as_lineno_stack:+:} unset as_lineno
+
+} # ac_fn_c_check_header_compile
+
+# ac_fn_c_compute_int LINENO EXPR VAR INCLUDES
+# --------------------------------------------
+# Tries to find the compile-time value of EXPR in a program that includes
+# INCLUDES, setting VAR accordingly. Returns whether the value could be
+# computed
+ac_fn_c_compute_int ()
+{
+  as_lineno=${as_lineno-"$1"} as_lineno_stack=as_lineno_stack=$as_lineno_stack
+  if test "$cross_compiling" = yes; then
+    # Depending upon the size, compute the lo and hi bounds.
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+$4
+int
+main (void)
+{
+static int test_array [1 - 2 * !(($2) >= 0)];
+test_array [0] = 0;
+return test_array [0];
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  ac_lo=0 ac_mid=0
+  while :; do
+    cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+$4
+int
+main (void)
+{
+static int test_array [1 - 2 * !(($2) <= $ac_mid)];
+test_array [0] = 0;
+return test_array [0];
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  ac_hi=$ac_mid; break
+else $as_nop
+  as_fn_arith $ac_mid + 1 && ac_lo=$as_val
+			if test $ac_lo -le $ac_mid; then
+			  ac_lo= ac_hi=
+			  break
+			fi
+			as_fn_arith 2 '*' $ac_mid + 1 && ac_mid=$as_val
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+  done
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+$4
+int
+main (void)
+{
+static int test_array [1 - 2 * !(($2) < 0)];
+test_array [0] = 0;
+return test_array [0];
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  ac_hi=-1 ac_mid=-1
+  while :; do
+    cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+$4
+int
+main (void)
+{
+static int test_array [1 - 2 * !(($2) >= $ac_mid)];
+test_array [0] = 0;
+return test_array [0];
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  ac_lo=$ac_mid; break
+else $as_nop
+  as_fn_arith '(' $ac_mid ')' - 1 && ac_hi=$as_val
+			if test $ac_mid -le $ac_hi; then
+			  ac_lo= ac_hi=
+			  break
+			fi
+			as_fn_arith 2 '*' $ac_mid && ac_mid=$as_val
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+  done
+else $as_nop
+  ac_lo= ac_hi=
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+# Binary search between lo and hi bounds.
+while test "x$ac_lo" != "x$ac_hi"; do
+  as_fn_arith '(' $ac_hi - $ac_lo ')' / 2 + $ac_lo && ac_mid=$as_val
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+$4
+int
+main (void)
+{
+static int test_array [1 - 2 * !(($2) <= $ac_mid)];
+test_array [0] = 0;
+return test_array [0];
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  ac_hi=$ac_mid
+else $as_nop
+  as_fn_arith '(' $ac_mid ')' + 1 && ac_lo=$as_val
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+done
+case $ac_lo in #((
+?*) eval "$3=\$ac_lo"; ac_retval=0 ;;
+'') ac_retval=1 ;;
+esac
+  else
+    cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+$4
+static long int longval (void) { return $2; }
+static unsigned long int ulongval (void) { return $2; }
+#include <stdio.h>
+#include <stdlib.h>
+int
+main (void)
+{
+
+  FILE *f = fopen ("conftest.val", "w");
+  if (! f)
+    return 1;
+  if (($2) < 0)
+    {
+      long int i = longval ();
+      if (i != ($2))
+	return 1;
+      fprintf (f, "%ld", i);
+    }
+  else
+    {
+      unsigned long int i = ulongval ();
+      if (i != ($2))
+	return 1;
+      fprintf (f, "%lu", i);
+    }
+  /* Do not output a trailing newline, as this causes \r\n confusion
+     on some platforms.  */
+  return ferror (f) || fclose (f) != 0;
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_run "$LINENO"
+then :
+  echo >>conftest.val; read $3 <conftest.val; ac_retval=0
+else $as_nop
+  ac_retval=1
+fi
+rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
+  conftest.$ac_objext conftest.beam conftest.$ac_ext
+rm -f conftest.val
+
+  fi
+  eval $as_lineno_stack; ${as_lineno_stack:+:} unset as_lineno
+  as_fn_set_status $ac_retval
+
+} # ac_fn_c_compute_int
+
+# ac_fn_c_check_func LINENO FUNC VAR
+# ----------------------------------
+# Tests whether FUNC exists, setting the cache variable VAR accordingly
+ac_fn_c_check_func ()
+{
+  as_lineno=${as_lineno-"$1"} as_lineno_stack=as_lineno_stack=$as_lineno_stack
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $2" >&5
+printf %s "checking for $2... " >&6; }
+if eval test \${$3+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+/* Define $2 to an innocuous variant, in case <limits.h> declares $2.
+   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
+#define $2 innocuous_$2
+
+/* System header to define __stub macros and hopefully few prototypes,
+   which can conflict with char $2 (); below.  */
+
+#include <limits.h>
+#undef $2
+
+/* Override any GCC internal prototype to avoid an error.
+   Use char because int might match the return type of a GCC
+   builtin and then its argument prototype would still apply.  */
+#ifdef __cplusplus
+extern "C"
+#endif
+char $2 ();
+/* The GNU C library defines this for functions which it implements
+    to always fail with ENOSYS.  Some functions are actually named
+    something starting with __ and the normal name is an alias.  */
+#if defined __stub_$2 || defined __stub___$2
+choke me
+#endif
+
+int
+main (void)
+{
+return $2 ();
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"
+then :
+  eval "$3=yes"
+else $as_nop
+  eval "$3=no"
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
+    conftest$ac_exeext conftest.$ac_ext
+fi
+eval ac_res=\$$3
+	       { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_res" >&5
+printf "%s\n" "$ac_res" >&6; }
+  eval $as_lineno_stack; ${as_lineno_stack:+:} unset as_lineno
+
+} # ac_fn_c_check_func
+
+# ac_fn_c_check_type LINENO TYPE VAR INCLUDES
+# -------------------------------------------
+# Tests whether TYPE exists after having included INCLUDES, setting cache
+# variable VAR accordingly.
+ac_fn_c_check_type ()
+{
+  as_lineno=${as_lineno-"$1"} as_lineno_stack=as_lineno_stack=$as_lineno_stack
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $2" >&5
+printf %s "checking for $2... " >&6; }
+if eval test \${$3+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  eval "$3=no"
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+$4
+int
+main (void)
+{
+if (sizeof ($2))
+	 return 0;
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+$4
+int
+main (void)
+{
+if (sizeof (($2)))
+	    return 0;
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+
+else $as_nop
+  eval "$3=yes"
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+eval ac_res=\$$3
+	       { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_res" >&5
+printf "%s\n" "$ac_res" >&6; }
+  eval $as_lineno_stack; ${as_lineno_stack:+:} unset as_lineno
+
+} # ac_fn_c_check_type
+ac_configure_args_raw=
+for ac_arg
+do
+  case $ac_arg in
+  *\'*)
+    ac_arg=`printf "%s\n" "$ac_arg" | sed "s/'/'\\\\\\\\''/g"` ;;
+  esac
+  as_fn_append ac_configure_args_raw " '$ac_arg'"
+done
+
+case $ac_configure_args_raw in
+  *$as_nl*)
+    ac_safe_unquote= ;;
+  *)
+    ac_unsafe_z='|&;<>()$`\\"*?[ ''	' # This string ends in space, tab.
+    ac_unsafe_a="$ac_unsafe_z#~"
+    ac_safe_unquote="s/ '\\([^$ac_unsafe_a][^$ac_unsafe_z]*\\)'/ \\1/g"
+    ac_configure_args_raw=`      printf "%s\n" "$ac_configure_args_raw" | sed "$ac_safe_unquote"`;;
+esac
+
+cat >config.log <<_ACEOF
+This file contains any messages produced by compilers while
+running configure, to aid debugging if configure makes a mistake.
+
+It was created by $as_me, which was
+generated by GNU Autoconf 2.71.  Invocation command line was
+
+  $ $0$ac_configure_args_raw
+
+_ACEOF
+exec 5>>config.log
+{
+cat <<_ASUNAME
+## --------- ##
+## Platform. ##
+## --------- ##
+
+hostname = `(hostname || uname -n) 2>/dev/null | sed 1q`
+uname -m = `(uname -m) 2>/dev/null || echo unknown`
+uname -r = `(uname -r) 2>/dev/null || echo unknown`
+uname -s = `(uname -s) 2>/dev/null || echo unknown`
+uname -v = `(uname -v) 2>/dev/null || echo unknown`
+
+/usr/bin/uname -p = `(/usr/bin/uname -p) 2>/dev/null || echo unknown`
+/bin/uname -X     = `(/bin/uname -X) 2>/dev/null     || echo unknown`
+
+/bin/arch              = `(/bin/arch) 2>/dev/null              || echo unknown`
+/usr/bin/arch -k       = `(/usr/bin/arch -k) 2>/dev/null       || echo unknown`
+/usr/convex/getsysinfo = `(/usr/convex/getsysinfo) 2>/dev/null || echo unknown`
+/usr/bin/hostinfo      = `(/usr/bin/hostinfo) 2>/dev/null      || echo unknown`
+/bin/machine           = `(/bin/machine) 2>/dev/null           || echo unknown`
+/usr/bin/oslevel       = `(/usr/bin/oslevel) 2>/dev/null       || echo unknown`
+/bin/universe          = `(/bin/universe) 2>/dev/null          || echo unknown`
+
+_ASUNAME
+
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  case $as_dir in #(((
+    '') as_dir=./ ;;
+    */) ;;
+    *) as_dir=$as_dir/ ;;
+  esac
+    printf "%s\n" "PATH: $as_dir"
+  done
+IFS=$as_save_IFS
+
+} >&5
+
+cat >&5 <<_ACEOF
+
+
+## ----------- ##
+## Core tests. ##
+## ----------- ##
+
+_ACEOF
+
+
+# Keep a trace of the command line.
+# Strip out --no-create and --no-recursion so they do not pile up.
+# Strip out --silent because we don't want to record it for future runs.
+# Also quote any args containing shell meta-characters.
+# Make two passes to allow for proper duplicate-argument suppression.
+ac_configure_args=
+ac_configure_args0=
+ac_configure_args1=
+ac_must_keep_next=false
+for ac_pass in 1 2
+do
+  for ac_arg
+  do
+    case $ac_arg in
+    -no-create | --no-c* | -n | -no-recursion | --no-r*) continue ;;
+    -q | -quiet | --quiet | --quie | --qui | --qu | --q \
+    | -silent | --silent | --silen | --sile | --sil)
+      continue ;;
+    *\'*)
+      ac_arg=`printf "%s\n" "$ac_arg" | sed "s/'/'\\\\\\\\''/g"` ;;
+    esac
+    case $ac_pass in
+    1) as_fn_append ac_configure_args0 " '$ac_arg'" ;;
+    2)
+      as_fn_append ac_configure_args1 " '$ac_arg'"
+      if test $ac_must_keep_next = true; then
+	ac_must_keep_next=false # Got value, back to normal.
+      else
+	case $ac_arg in
+	  *=* | --config-cache | -C | -disable-* | --disable-* \
+	  | -enable-* | --enable-* | -gas | --g* | -nfp | --nf* \
+	  | -q | -quiet | --q* | -silent | --sil* | -v | -verb* \
+	  | -with-* | --with-* | -without-* | --without-* | --x)
+	    case "$ac_configure_args0 " in
+	      "$ac_configure_args1"*" '$ac_arg' "* ) continue ;;
+	    esac
+	    ;;
+	  -* ) ac_must_keep_next=true ;;
+	esac
+      fi
+      as_fn_append ac_configure_args " '$ac_arg'"
+      ;;
+    esac
+  done
+done
+{ ac_configure_args0=; unset ac_configure_args0;}
+{ ac_configure_args1=; unset ac_configure_args1;}
+
+# When interrupted or exit'd, cleanup temporary files, and complete
+# config.log.  We remove comments because anyway the quotes in there
+# would cause problems or look ugly.
+# WARNING: Use '\'' to represent an apostrophe within the trap.
+# WARNING: Do not start the trap code with a newline, due to a FreeBSD 4.0 bug.
+trap 'exit_status=$?
+  # Sanitize IFS.
+  IFS=" ""	$as_nl"
+  # Save into config.log some information that might help in debugging.
+  {
+    echo
+
+    printf "%s\n" "## ---------------- ##
+## Cache variables. ##
+## ---------------- ##"
+    echo
+    # The following way of writing the cache mishandles newlines in values,
+(
+  for ac_var in `(set) 2>&1 | sed -n '\''s/^\([a-zA-Z_][a-zA-Z0-9_]*\)=.*/\1/p'\''`; do
+    eval ac_val=\$$ac_var
+    case $ac_val in #(
+    *${as_nl}*)
+      case $ac_var in #(
+      *_cv_*) { printf "%s\n" "$as_me:${as_lineno-$LINENO}: WARNING: cache variable $ac_var contains a newline" >&5
+printf "%s\n" "$as_me: WARNING: cache variable $ac_var contains a newline" >&2;} ;;
+      esac
+      case $ac_var in #(
+      _ | IFS | as_nl) ;; #(
+      BASH_ARGV | BASH_SOURCE) eval $ac_var= ;; #(
+      *) { eval $ac_var=; unset $ac_var;} ;;
+      esac ;;
+    esac
+  done
+  (set) 2>&1 |
+    case $as_nl`(ac_space='\'' '\''; set) 2>&1` in #(
+    *${as_nl}ac_space=\ *)
+      sed -n \
+	"s/'\''/'\''\\\\'\'''\''/g;
+	  s/^\\([_$as_cr_alnum]*_cv_[_$as_cr_alnum]*\\)=\\(.*\\)/\\1='\''\\2'\''/p"
+      ;; #(
+    *)
+      sed -n "/^[_$as_cr_alnum]*_cv_[_$as_cr_alnum]*=/p"
+      ;;
+    esac |
+    sort
+)
+    echo
+
+    printf "%s\n" "## ----------------- ##
+## Output variables. ##
+## ----------------- ##"
+    echo
+    for ac_var in $ac_subst_vars
+    do
+      eval ac_val=\$$ac_var
+      case $ac_val in
+      *\'\''*) ac_val=`printf "%s\n" "$ac_val" | sed "s/'\''/'\''\\\\\\\\'\'''\''/g"`;;
+      esac
+      printf "%s\n" "$ac_var='\''$ac_val'\''"
+    done | sort
+    echo
+
+    if test -n "$ac_subst_files"; then
+      printf "%s\n" "## ------------------- ##
+## File substitutions. ##
+## ------------------- ##"
+      echo
+      for ac_var in $ac_subst_files
+      do
+	eval ac_val=\$$ac_var
+	case $ac_val in
+	*\'\''*) ac_val=`printf "%s\n" "$ac_val" | sed "s/'\''/'\''\\\\\\\\'\'''\''/g"`;;
+	esac
+	printf "%s\n" "$ac_var='\''$ac_val'\''"
+      done | sort
+      echo
+    fi
+
+    if test -s confdefs.h; then
+      printf "%s\n" "## ----------- ##
+## confdefs.h. ##
+## ----------- ##"
+      echo
+      cat confdefs.h
+      echo
+    fi
+    test "$ac_signal" != 0 &&
+      printf "%s\n" "$as_me: caught signal $ac_signal"
+    printf "%s\n" "$as_me: exit $exit_status"
+  } >&5
+  rm -f core *.core core.conftest.* &&
+    rm -f -r conftest* confdefs* conf$$* $ac_clean_files &&
+    exit $exit_status
+' 0
+for ac_signal in 1 2 13 15; do
+  trap 'ac_signal='$ac_signal'; as_fn_exit 1' $ac_signal
+done
+ac_signal=0
+
+# confdefs.h avoids OS command line length limits that DEFS can exceed.
+rm -f -r conftest* confdefs.h
+
+printf "%s\n" "/* confdefs.h */" > confdefs.h
+
+# Predefined preprocessor variables.
+
+printf "%s\n" "#define PACKAGE_NAME \"$PACKAGE_NAME\"" >>confdefs.h
+
+printf "%s\n" "#define PACKAGE_TARNAME \"$PACKAGE_TARNAME\"" >>confdefs.h
+
+printf "%s\n" "#define PACKAGE_VERSION \"$PACKAGE_VERSION\"" >>confdefs.h
+
+printf "%s\n" "#define PACKAGE_STRING \"$PACKAGE_STRING\"" >>confdefs.h
+
+printf "%s\n" "#define PACKAGE_BUGREPORT \"$PACKAGE_BUGREPORT\"" >>confdefs.h
+
+printf "%s\n" "#define PACKAGE_URL \"$PACKAGE_URL\"" >>confdefs.h
+
+
+# Let the site file select an alternate cache file if it wants to.
+# Prefer an explicitly selected file to automatically selected ones.
+if test -n "$CONFIG_SITE"; then
+  ac_site_files="$CONFIG_SITE"
+elif test "x$prefix" != xNONE; then
+  ac_site_files="$prefix/share/config.site $prefix/etc/config.site"
+else
+  ac_site_files="$ac_default_prefix/share/config.site $ac_default_prefix/etc/config.site"
+fi
+
+for ac_site_file in $ac_site_files
+do
+  case $ac_site_file in #(
+  */*) :
+     ;; #(
+  *) :
+    ac_site_file=./$ac_site_file ;;
+esac
+  if test -f "$ac_site_file" && test -r "$ac_site_file"; then
+    { printf "%s\n" "$as_me:${as_lineno-$LINENO}: loading site script $ac_site_file" >&5
+printf "%s\n" "$as_me: loading site script $ac_site_file" >&6;}
+    sed 's/^/| /' "$ac_site_file" >&5
+    . "$ac_site_file" \
+      || { { printf "%s\n" "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
+printf "%s\n" "$as_me: error: in \`$ac_pwd':" >&2;}
+as_fn_error $? "failed to load site script $ac_site_file
+See \`config.log' for more details" "$LINENO" 5; }
+  fi
+done
+
+if test -r "$cache_file"; then
+  # Some versions of bash will fail to source /dev/null (special files
+  # actually), so we avoid doing that.  DJGPP emulates it as a regular file.
+  if test /dev/null != "$cache_file" && test -f "$cache_file"; then
+    { printf "%s\n" "$as_me:${as_lineno-$LINENO}: loading cache $cache_file" >&5
+printf "%s\n" "$as_me: loading cache $cache_file" >&6;}
+    case $cache_file in
+      [\\/]* | ?:[\\/]* ) . "$cache_file";;
+      *)                      . "./$cache_file";;
+    esac
+  fi
+else
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: creating cache $cache_file" >&5
+printf "%s\n" "$as_me: creating cache $cache_file" >&6;}
+  >$cache_file
+fi
+
+# Test code for whether the C compiler supports C89 (global declarations)
+ac_c_conftest_c89_globals='
+/* Does the compiler advertise C89 conformance?
+   Do not test the value of __STDC__, because some compilers set it to 0
+   while being otherwise adequately conformant. */
+#if !defined __STDC__
+# error "Compiler does not advertise C89 conformance"
+#endif
+
+#include <stddef.h>
+#include <stdarg.h>
+struct stat;
+/* Most of the following tests are stolen from RCS 5.7 src/conf.sh.  */
+struct buf { int x; };
+struct buf * (*rcsopen) (struct buf *, struct stat *, int);
+static char *e (p, i)
+     char **p;
+     int i;
+{
+  return p[i];
+}
+static char *f (char * (*g) (char **, int), char **p, ...)
+{
+  char *s;
+  va_list v;
+  va_start (v,p);
+  s = g (p, va_arg (v,int));
+  va_end (v);
+  return s;
+}
+
+/* OSF 4.0 Compaq cc is some sort of almost-ANSI by default.  It has
+   function prototypes and stuff, but not \xHH hex character constants.
+   These do not provoke an error unfortunately, instead are silently treated
+   as an "x".  The following induces an error, until -std is added to get
+   proper ANSI mode.  Curiously \x00 != x always comes out true, for an
+   array size at least.  It is necessary to write \x00 == 0 to get something
+   that is true only with -std.  */
+int osf4_cc_array ['\''\x00'\'' == 0 ? 1 : -1];
+
+/* IBM C 6 for AIX is almost-ANSI by default, but it replaces macro parameters
+   inside strings and character constants.  */
+#define FOO(x) '\''x'\''
+int xlc6_cc_array[FOO(a) == '\''x'\'' ? 1 : -1];
+
+int test (int i, double x);
+struct s1 {int (*f) (int a);};
+struct s2 {int (*f) (double a);};
+int pairnames (int, char **, int *(*)(struct buf *, struct stat *, int),
+               int, int);'
+
+# Test code for whether the C compiler supports C89 (body of main).
+ac_c_conftest_c89_main='
+ok |= (argc == 0 || f (e, argv, 0) != argv[0] || f (e, argv, 1) != argv[1]);
+'
+
+# Test code for whether the C compiler supports C99 (global declarations)
+ac_c_conftest_c99_globals='
+// Does the compiler advertise C99 conformance?
+#if !defined __STDC_VERSION__ || __STDC_VERSION__ < 199901L
+# error "Compiler does not advertise C99 conformance"
+#endif
+
+#include <stdbool.h>
+extern int puts (const char *);
+extern int printf (const char *, ...);
+extern int dprintf (int, const char *, ...);
+extern void *malloc (size_t);
+
+// Check varargs macros.  These examples are taken from C99 6.10.3.5.
+// dprintf is used instead of fprintf to avoid needing to declare
+// FILE and stderr.
+#define debug(...) dprintf (2, __VA_ARGS__)
+#define showlist(...) puts (#__VA_ARGS__)
+#define report(test,...) ((test) ? puts (#test) : printf (__VA_ARGS__))
+static void
+test_varargs_macros (void)
+{
+  int x = 1234;
+  int y = 5678;
+  debug ("Flag");
+  debug ("X = %d\n", x);
+  showlist (The first, second, and third items.);
+  report (x>y, "x is %d but y is %d", x, y);
+}
+
+// Check long long types.
+#define BIG64 18446744073709551615ull
+#define BIG32 4294967295ul
+#define BIG_OK (BIG64 / BIG32 == 4294967297ull && BIG64 % BIG32 == 0)
+#if !BIG_OK
+  #error "your preprocessor is broken"
+#endif
+#if BIG_OK
+#else
+  #error "your preprocessor is broken"
+#endif
+static long long int bignum = -9223372036854775807LL;
+static unsigned long long int ubignum = BIG64;
+
+struct incomplete_array
+{
+  int datasize;
+  double data[];
+};
+
+struct named_init {
+  int number;
+  const wchar_t *name;
+  double average;
+};
+
+typedef const char *ccp;
+
+static inline int
+test_restrict (ccp restrict text)
+{
+  // See if C++-style comments work.
+  // Iterate through items via the restricted pointer.
+  // Also check for declarations in for loops.
+  for (unsigned int i = 0; *(text+i) != '\''\0'\''; ++i)
+    continue;
+  return 0;
+}
+
+// Check varargs and va_copy.
+static bool
+test_varargs (const char *format, ...)
+{
+  va_list args;
+  va_start (args, format);
+  va_list args_copy;
+  va_copy (args_copy, args);
+
+  const char *str = "";
+  int number = 0;
+  float fnumber = 0;
+
+  while (*format)
+    {
+      switch (*format++)
+	{
+	case '\''s'\'': // string
+	  str = va_arg (args_copy, const char *);
+	  break;
+	case '\''d'\'': // int
+	  number = va_arg (args_copy, int);
+	  break;
+	case '\''f'\'': // float
+	  fnumber = va_arg (args_copy, double);
+	  break;
+	default:
+	  break;
+	}
+    }
+  va_end (args_copy);
+  va_end (args);
+
+  return *str && number && fnumber;
+}
+'
+
+# Test code for whether the C compiler supports C99 (body of main).
+ac_c_conftest_c99_main='
+  // Check bool.
+  _Bool success = false;
+  success |= (argc != 0);
+
+  // Check restrict.
+  if (test_restrict ("String literal") == 0)
+    success = true;
+  char *restrict newvar = "Another string";
+
+  // Check varargs.
+  success &= test_varargs ("s, d'\'' f .", "string", 65, 34.234);
+  test_varargs_macros ();
+
+  // Check flexible array members.
+  struct incomplete_array *ia =
+    malloc (sizeof (struct incomplete_array) + (sizeof (double) * 10));
+  ia->datasize = 10;
+  for (int i = 0; i < ia->datasize; ++i)
+    ia->data[i] = i * 1.234;
+
+  // Check named initializers.
+  struct named_init ni = {
+    .number = 34,
+    .name = L"Test wide string",
+    .average = 543.34343,
+  };
+
+  ni.number = 58;
+
+  int dynamic_array[ni.number];
+  dynamic_array[0] = argv[0][0];
+  dynamic_array[ni.number - 1] = 543;
+
+  // work around unused variable warnings
+  ok |= (!success || bignum == 0LL || ubignum == 0uLL || newvar[0] == '\''x'\''
+	 || dynamic_array[ni.number - 1] != 543);
+'
+
+# Test code for whether the C compiler supports C11 (global declarations)
+ac_c_conftest_c11_globals='
+// Does the compiler advertise C11 conformance?
+#if !defined __STDC_VERSION__ || __STDC_VERSION__ < 201112L
+# error "Compiler does not advertise C11 conformance"
+#endif
+
+// Check _Alignas.
+char _Alignas (double) aligned_as_double;
+char _Alignas (0) no_special_alignment;
+extern char aligned_as_int;
+char _Alignas (0) _Alignas (int) aligned_as_int;
+
+// Check _Alignof.
+enum
+{
+  int_alignment = _Alignof (int),
+  int_array_alignment = _Alignof (int[100]),
+  char_alignment = _Alignof (char)
+};
+_Static_assert (0 < -_Alignof (int), "_Alignof is signed");
+
+// Check _Noreturn.
+int _Noreturn does_not_return (void) { for (;;) continue; }
+
+// Check _Static_assert.
+struct test_static_assert
+{
+  int x;
+  _Static_assert (sizeof (int) <= sizeof (long int),
+                  "_Static_assert does not work in struct");
+  long int y;
+};
+
+// Check UTF-8 literals.
+#define u8 syntax error!
+char const utf8_literal[] = u8"happens to be ASCII" "another string";
+
+// Check duplicate typedefs.
+typedef long *long_ptr;
+typedef long int *long_ptr;
+typedef long_ptr long_ptr;
+
+// Anonymous structures and unions -- taken from C11 6.7.2.1 Example 1.
+struct anonymous
+{
+  union {
+    struct { int i; int j; };
+    struct { int k; long int l; } w;
+  };
+  int m;
+} v1;
+'
+
+# Test code for whether the C compiler supports C11 (body of main).
+ac_c_conftest_c11_main='
+  _Static_assert ((offsetof (struct anonymous, i)
+		   == offsetof (struct anonymous, w.k)),
+		  "Anonymous union alignment botch");
+  v1.i = 2;
+  v1.w.k = 5;
+  ok |= v1.i != 5;
+'
+
+# Test code for whether the C compiler supports C11 (complete).
+ac_c_conftest_c11_program="${ac_c_conftest_c89_globals}
+${ac_c_conftest_c99_globals}
+${ac_c_conftest_c11_globals}
+
+int
+main (int argc, char **argv)
+{
+  int ok = 0;
+  ${ac_c_conftest_c89_main}
+  ${ac_c_conftest_c99_main}
+  ${ac_c_conftest_c11_main}
+  return ok;
+}
+"
+
+# Test code for whether the C compiler supports C99 (complete).
+ac_c_conftest_c99_program="${ac_c_conftest_c89_globals}
+${ac_c_conftest_c99_globals}
+
+int
+main (int argc, char **argv)
+{
+  int ok = 0;
+  ${ac_c_conftest_c89_main}
+  ${ac_c_conftest_c99_main}
+  return ok;
+}
+"
+
+# Test code for whether the C compiler supports C89 (complete).
+ac_c_conftest_c89_program="${ac_c_conftest_c89_globals}
+
+int
+main (int argc, char **argv)
+{
+  int ok = 0;
+  ${ac_c_conftest_c89_main}
+  return ok;
+}
+"
+
+# Test code for whether the C++ compiler supports C++98 (global declarations)
+ac_cxx_conftest_cxx98_globals='
+// Does the compiler advertise C++98 conformance?
+#if !defined __cplusplus || __cplusplus < 199711L
+# error "Compiler does not advertise C++98 conformance"
+#endif
+
+// These inclusions are to reject old compilers that
+// lack the unsuffixed header files.
+#include <cstdlib>
+#include <exception>
+
+// <cassert> and <cstring> are *not* freestanding headers in C++98.
+extern void assert (int);
+namespace std {
+  extern int strcmp (const char *, const char *);
+}
+
+// Namespaces, exceptions, and templates were all added after "C++ 2.0".
+using std::exception;
+using std::strcmp;
+
+namespace {
+
+void test_exception_syntax()
+{
+  try {
+    throw "test";
+  } catch (const char *s) {
+    // Extra parentheses suppress a warning when building autoconf itself,
+    // due to lint rules shared with more typical C programs.
+    assert (!(strcmp) (s, "test"));
+  }
+}
+
+template <typename T> struct test_template
+{
+  T const val;
+  explicit test_template(T t) : val(t) {}
+  template <typename U> T add(U u) { return static_cast<T>(u) + val; }
+};
+
+} // anonymous namespace
+'
+
+# Test code for whether the C++ compiler supports C++98 (body of main)
+ac_cxx_conftest_cxx98_main='
+  assert (argc);
+  assert (! argv[0]);
+{
+  test_exception_syntax ();
+  test_template<double> tt (2.0);
+  assert (tt.add (4) == 6.0);
+  assert (true && !false);
+}
+'
+
+# Test code for whether the C++ compiler supports C++11 (global declarations)
+ac_cxx_conftest_cxx11_globals='
+// Does the compiler advertise C++ 2011 conformance?
+#if !defined __cplusplus || __cplusplus < 201103L
+# error "Compiler does not advertise C++11 conformance"
+#endif
+
+namespace cxx11test
+{
+  constexpr int get_val() { return 20; }
+
+  struct testinit
+  {
+    int i;
+    double d;
+  };
+
+  class delegate
+  {
+  public:
+    delegate(int n) : n(n) {}
+    delegate(): delegate(2354) {}
+
+    virtual int getval() { return this->n; };
+  protected:
+    int n;
+  };
+
+  class overridden : public delegate
+  {
+  public:
+    overridden(int n): delegate(n) {}
+    virtual int getval() override final { return this->n * 2; }
+  };
+
+  class nocopy
+  {
+  public:
+    nocopy(int i): i(i) {}
+    nocopy() = default;
+    nocopy(const nocopy&) = delete;
+    nocopy & operator=(const nocopy&) = delete;
+  private:
+    int i;
+  };
+
+  // for testing lambda expressions
+  template <typename Ret, typename Fn> Ret eval(Fn f, Ret v)
+  {
+    return f(v);
+  }
+
+  // for testing variadic templates and trailing return types
+  template <typename V> auto sum(V first) -> V
+  {
+    return first;
+  }
+  template <typename V, typename... Args> auto sum(V first, Args... rest) -> V
+  {
+    return first + sum(rest...);
+  }
+}
+'
+
+# Test code for whether the C++ compiler supports C++11 (body of main)
+ac_cxx_conftest_cxx11_main='
+{
+  // Test auto and decltype
+  auto a1 = 6538;
+  auto a2 = 48573953.4;
+  auto a3 = "String literal";
+
+  int total = 0;
+  for (auto i = a3; *i; ++i) { total += *i; }
+
+  decltype(a2) a4 = 34895.034;
+}
+{
+  // Test constexpr
+  short sa[cxx11test::get_val()] = { 0 };
+}
+{
+  // Test initializer lists
+  cxx11test::testinit il = { 4323, 435234.23544 };
+}
+{
+  // Test range-based for
+  int array[] = {9, 7, 13, 15, 4, 18, 12, 10, 5, 3,
+                 14, 19, 17, 8, 6, 20, 16, 2, 11, 1};
+  for (auto &x : array) { x += 23; }
+}
+{
+  // Test lambda expressions
+  using cxx11test::eval;
+  assert (eval ([](int x) { return x*2; }, 21) == 42);
+  double d = 2.0;
+  assert (eval ([&](double x) { return d += x; }, 3.0) == 5.0);
+  assert (d == 5.0);
+  assert (eval ([=](double x) mutable { return d += x; }, 4.0) == 9.0);
+  assert (d == 5.0);
+}
+{
+  // Test use of variadic templates
+  using cxx11test::sum;
+  auto a = sum(1);
+  auto b = sum(1, 2);
+  auto c = sum(1.0, 2.0, 3.0);
+}
+{
+  // Test constructor delegation
+  cxx11test::delegate d1;
+  cxx11test::delegate d2();
+  cxx11test::delegate d3(45);
+}
+{
+  // Test override and final
+  cxx11test::overridden o1(55464);
+}
+{
+  // Test nullptr
+  char *c = nullptr;
+}
+{
+  // Test template brackets
+  test_template<::test_template<int>> v(test_template<int>(12));
+}
+{
+  // Unicode literals
+  char const *utf8 = u8"UTF-8 string \u2500";
+  char16_t const *utf16 = u"UTF-8 string \u2500";
+  char32_t const *utf32 = U"UTF-32 string \u2500";
+}
+'
+
+# Test code for whether the C compiler supports C++11 (complete).
+ac_cxx_conftest_cxx11_program="${ac_cxx_conftest_cxx98_globals}
+${ac_cxx_conftest_cxx11_globals}
+
+int
+main (int argc, char **argv)
+{
+  int ok = 0;
+  ${ac_cxx_conftest_cxx98_main}
+  ${ac_cxx_conftest_cxx11_main}
+  return ok;
+}
+"
+
+# Test code for whether the C compiler supports C++98 (complete).
+ac_cxx_conftest_cxx98_program="${ac_cxx_conftest_cxx98_globals}
+int
+main (int argc, char **argv)
+{
+  int ok = 0;
+  ${ac_cxx_conftest_cxx98_main}
+  return ok;
+}
+"
+
+as_fn_append ac_header_c_list " stdio.h stdio_h HAVE_STDIO_H"
+as_fn_append ac_header_c_list " stdlib.h stdlib_h HAVE_STDLIB_H"
+as_fn_append ac_header_c_list " string.h string_h HAVE_STRING_H"
+as_fn_append ac_header_c_list " inttypes.h inttypes_h HAVE_INTTYPES_H"
+as_fn_append ac_header_c_list " stdint.h stdint_h HAVE_STDINT_H"
+as_fn_append ac_header_c_list " strings.h strings_h HAVE_STRINGS_H"
+as_fn_append ac_header_c_list " sys/stat.h sys_stat_h HAVE_SYS_STAT_H"
+as_fn_append ac_header_c_list " sys/types.h sys_types_h HAVE_SYS_TYPES_H"
+as_fn_append ac_header_c_list " unistd.h unistd_h HAVE_UNISTD_H"
+
+# Auxiliary files required by this configure script.
+ac_aux_files="install-sh config.guess config.sub"
+
+# Locations in which to look for auxiliary files.
+ac_aux_dir_candidates="${srcdir}/build-aux"
+
+# Search for a directory containing all of the required auxiliary files,
+# $ac_aux_files, from the $PATH-style list $ac_aux_dir_candidates.
+# If we don't find one directory that contains all the files we need,
+# we report the set of missing files from the *first* directory in
+# $ac_aux_dir_candidates and give up.
+ac_missing_aux_files=""
+ac_first_candidate=:
+printf "%s\n" "$as_me:${as_lineno-$LINENO}: looking for aux files: $ac_aux_files" >&5
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+as_found=false
+for as_dir in $ac_aux_dir_candidates
+do
+  IFS=$as_save_IFS
+  case $as_dir in #(((
+    '') as_dir=./ ;;
+    */) ;;
+    *) as_dir=$as_dir/ ;;
+  esac
+  as_found=:
+
+  printf "%s\n" "$as_me:${as_lineno-$LINENO}:  trying $as_dir" >&5
+  ac_aux_dir_found=yes
+  ac_install_sh=
+  for ac_aux in $ac_aux_files
+  do
+    # As a special case, if "install-sh" is required, that requirement
+    # can be satisfied by any of "install-sh", "install.sh", or "shtool",
+    # and $ac_install_sh is set appropriately for whichever one is found.
+    if test x"$ac_aux" = x"install-sh"
+    then
+      if test -f "${as_dir}install-sh"; then
+        printf "%s\n" "$as_me:${as_lineno-$LINENO}:   ${as_dir}install-sh found" >&5
+        ac_install_sh="${as_dir}install-sh -c"
+      elif test -f "${as_dir}install.sh"; then
+        printf "%s\n" "$as_me:${as_lineno-$LINENO}:   ${as_dir}install.sh found" >&5
+        ac_install_sh="${as_dir}install.sh -c"
+      elif test -f "${as_dir}shtool"; then
+        printf "%s\n" "$as_me:${as_lineno-$LINENO}:   ${as_dir}shtool found" >&5
+        ac_install_sh="${as_dir}shtool install -c"
+      else
+        ac_aux_dir_found=no
+        if $ac_first_candidate; then
+          ac_missing_aux_files="${ac_missing_aux_files} install-sh"
+        else
+          break
+        fi
+      fi
+    else
+      if test -f "${as_dir}${ac_aux}"; then
+        printf "%s\n" "$as_me:${as_lineno-$LINENO}:   ${as_dir}${ac_aux} found" >&5
+      else
+        ac_aux_dir_found=no
+        if $ac_first_candidate; then
+          ac_missing_aux_files="${ac_missing_aux_files} ${ac_aux}"
+        else
+          break
+        fi
+      fi
+    fi
+  done
+  if test "$ac_aux_dir_found" = yes; then
+    ac_aux_dir="$as_dir"
+    break
+  fi
+  ac_first_candidate=false
+
+  as_found=false
+done
+IFS=$as_save_IFS
+if $as_found
+then :
+
+else $as_nop
+  as_fn_error $? "cannot find required auxiliary files:$ac_missing_aux_files" "$LINENO" 5
+fi
+
+
+# These three variables are undocumented and unsupported,
+# and are intended to be withdrawn in a future Autoconf release.
+# They can cause serious problems if a builder's source tree is in a directory
+# whose full name contains unusual characters.
+if test -f "${ac_aux_dir}config.guess"; then
+  ac_config_guess="$SHELL ${ac_aux_dir}config.guess"
+fi
+if test -f "${ac_aux_dir}config.sub"; then
+  ac_config_sub="$SHELL ${ac_aux_dir}config.sub"
+fi
+if test -f "$ac_aux_dir/configure"; then
+  ac_configure="$SHELL ${ac_aux_dir}configure"
+fi
+
+# Check that the precious variables saved in the cache have kept the same
+# value.
+ac_cache_corrupted=false
+for ac_var in $ac_precious_vars; do
+  eval ac_old_set=\$ac_cv_env_${ac_var}_set
+  eval ac_new_set=\$ac_env_${ac_var}_set
+  eval ac_old_val=\$ac_cv_env_${ac_var}_value
+  eval ac_new_val=\$ac_env_${ac_var}_value
+  case $ac_old_set,$ac_new_set in
+    set,)
+      { printf "%s\n" "$as_me:${as_lineno-$LINENO}: error: \`$ac_var' was set to \`$ac_old_val' in the previous run" >&5
+printf "%s\n" "$as_me: error: \`$ac_var' was set to \`$ac_old_val' in the previous run" >&2;}
+      ac_cache_corrupted=: ;;
+    ,set)
+      { printf "%s\n" "$as_me:${as_lineno-$LINENO}: error: \`$ac_var' was not set in the previous run" >&5
+printf "%s\n" "$as_me: error: \`$ac_var' was not set in the previous run" >&2;}
+      ac_cache_corrupted=: ;;
+    ,);;
+    *)
+      if test "x$ac_old_val" != "x$ac_new_val"; then
+	# differences in whitespace do not lead to failure.
+	ac_old_val_w=`echo x $ac_old_val`
+	ac_new_val_w=`echo x $ac_new_val`
+	if test "$ac_old_val_w" != "$ac_new_val_w"; then
+	  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: error: \`$ac_var' has changed since the previous run:" >&5
+printf "%s\n" "$as_me: error: \`$ac_var' has changed since the previous run:" >&2;}
+	  ac_cache_corrupted=:
+	else
+	  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: warning: ignoring whitespace changes in \`$ac_var' since the previous run:" >&5
+printf "%s\n" "$as_me: warning: ignoring whitespace changes in \`$ac_var' since the previous run:" >&2;}
+	  eval $ac_var=\$ac_old_val
+	fi
+	{ printf "%s\n" "$as_me:${as_lineno-$LINENO}:   former value:  \`$ac_old_val'" >&5
+printf "%s\n" "$as_me:   former value:  \`$ac_old_val'" >&2;}
+	{ printf "%s\n" "$as_me:${as_lineno-$LINENO}:   current value: \`$ac_new_val'" >&5
+printf "%s\n" "$as_me:   current value: \`$ac_new_val'" >&2;}
+      fi;;
+  esac
+  # Pass precious variables to config.status.
+  if test "$ac_new_set" = set; then
+    case $ac_new_val in
+    *\'*) ac_arg=$ac_var=`printf "%s\n" "$ac_new_val" | sed "s/'/'\\\\\\\\''/g"` ;;
+    *) ac_arg=$ac_var=$ac_new_val ;;
+    esac
+    case " $ac_configure_args " in
+      *" '$ac_arg' "*) ;; # Avoid dups.  Use of quotes ensures accuracy.
+      *) as_fn_append ac_configure_args " '$ac_arg'" ;;
+    esac
+  fi
+done
+if $ac_cache_corrupted; then
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
+printf "%s\n" "$as_me: error: in \`$ac_pwd':" >&2;}
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: error: changes in the environment can compromise the build" >&5
+printf "%s\n" "$as_me: error: changes in the environment can compromise the build" >&2;}
+  as_fn_error $? "run \`${MAKE-make} distclean' and/or \`rm $cache_file'
+	    and start over" "$LINENO" 5
+fi
+## -------------------- ##
+## Main body of script. ##
+## -------------------- ##
+
+ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+
+
+
+
+
+
+
+
+
+CONFIGURE_CFLAGS=
+SPECIFIED_CFLAGS="${CFLAGS}"
+
+
+
+
+
+CONFIGURE_CXXFLAGS=
+SPECIFIED_CXXFLAGS="${CXXFLAGS}"
+
+
+
+
+
+CONFIG=`echo ${ac_configure_args} | sed -e 's#'"'"'\([^ ]*\)'"'"'#\1#g'`
+
+
+rev=2
+
+
+srcroot=$srcdir
+if test "x${srcroot}" = "x." ; then
+  srcroot=""
+else
+  srcroot="${srcroot}/"
+fi
+
+abs_srcroot="`cd \"${srcdir}\"; pwd`/"
+
+
+objroot=""
+
+abs_objroot="`pwd`/"
+
+
+case "$prefix" in
+   *\ * ) as_fn_error $? "Prefix should not contain spaces" "$LINENO" 5 ;;
+   "NONE" ) prefix="/usr/local" ;;
+esac
+case "$exec_prefix" in
+   *\ * ) as_fn_error $? "Exec prefix should not contain spaces" "$LINENO" 5 ;;
+   "NONE" ) exec_prefix=$prefix ;;
+esac
+PREFIX=$prefix
+
+BINDIR=`eval echo $bindir`
+BINDIR=`eval echo $BINDIR`
+
+INCLUDEDIR=`eval echo $includedir`
+INCLUDEDIR=`eval echo $INCLUDEDIR`
+
+LIBDIR=`eval echo $libdir`
+LIBDIR=`eval echo $LIBDIR`
+
+DATADIR=`eval echo $datadir`
+DATADIR=`eval echo $DATADIR`
+
+MANDIR=`eval echo $mandir`
+MANDIR=`eval echo $MANDIR`
+
+
+# Extract the first word of "xsltproc", so it can be a program name with args.
+set dummy xsltproc; ac_word=$2
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+printf %s "checking for $ac_word... " >&6; }
+if test ${ac_cv_path_XSLTPROC+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  case $XSLTPROC in
+  [\\/]* | ?:[\\/]*)
+  ac_cv_path_XSLTPROC="$XSLTPROC" # Let the user override the test with a path.
+  ;;
+  *)
+  as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  case $as_dir in #(((
+    '') as_dir=./ ;;
+    */) ;;
+    *) as_dir=$as_dir/ ;;
+  esac
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if as_fn_executable_p "$as_dir$ac_word$ac_exec_ext"; then
+    ac_cv_path_XSLTPROC="$as_dir$ac_word$ac_exec_ext"
+    printf "%s\n" "$as_me:${as_lineno-$LINENO}: found $as_dir$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+  test -z "$ac_cv_path_XSLTPROC" && ac_cv_path_XSLTPROC="false"
+  ;;
+esac
+fi
+XSLTPROC=$ac_cv_path_XSLTPROC
+if test -n "$XSLTPROC"; then
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $XSLTPROC" >&5
+printf "%s\n" "$XSLTPROC" >&6; }
+else
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
+fi
+
+
+if test -d "/usr/share/xml/docbook/stylesheet/docbook-xsl" ; then
+  DEFAULT_XSLROOT="/usr/share/xml/docbook/stylesheet/docbook-xsl"
+elif test -d "/usr/share/sgml/docbook/xsl-stylesheets" ; then
+  DEFAULT_XSLROOT="/usr/share/sgml/docbook/xsl-stylesheets"
+else
+    DEFAULT_XSLROOT=""
+fi
+
+# Check whether --with-xslroot was given.
+if test ${with_xslroot+y}
+then :
+  withval=$with_xslroot;
+if test "x$with_xslroot" = "xno" ; then
+  XSLROOT="${DEFAULT_XSLROOT}"
+else
+  XSLROOT="${with_xslroot}"
+fi
+
+else $as_nop
+  XSLROOT="${DEFAULT_XSLROOT}"
+
+fi
+
+if test "x$XSLTPROC" = "xfalse" ; then
+  XSLROOT=""
+fi
+
+
+CFLAGS=$CFLAGS
+
+
+
+
+
+
+
+
+
+ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+if test -n "$ac_tool_prefix"; then
+  # Extract the first word of "${ac_tool_prefix}gcc", so it can be a program name with args.
+set dummy ${ac_tool_prefix}gcc; ac_word=$2
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+printf %s "checking for $ac_word... " >&6; }
+if test ${ac_cv_prog_CC+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  if test -n "$CC"; then
+  ac_cv_prog_CC="$CC" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  case $as_dir in #(((
+    '') as_dir=./ ;;
+    */) ;;
+    *) as_dir=$as_dir/ ;;
+  esac
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if as_fn_executable_p "$as_dir$ac_word$ac_exec_ext"; then
+    ac_cv_prog_CC="${ac_tool_prefix}gcc"
+    printf "%s\n" "$as_me:${as_lineno-$LINENO}: found $as_dir$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+fi
+fi
+CC=$ac_cv_prog_CC
+if test -n "$CC"; then
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $CC" >&5
+printf "%s\n" "$CC" >&6; }
+else
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
+fi
+
+
+fi
+if test -z "$ac_cv_prog_CC"; then
+  ac_ct_CC=$CC
+  # Extract the first word of "gcc", so it can be a program name with args.
+set dummy gcc; ac_word=$2
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+printf %s "checking for $ac_word... " >&6; }
+if test ${ac_cv_prog_ac_ct_CC+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  if test -n "$ac_ct_CC"; then
+  ac_cv_prog_ac_ct_CC="$ac_ct_CC" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  case $as_dir in #(((
+    '') as_dir=./ ;;
+    */) ;;
+    *) as_dir=$as_dir/ ;;
+  esac
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if as_fn_executable_p "$as_dir$ac_word$ac_exec_ext"; then
+    ac_cv_prog_ac_ct_CC="gcc"
+    printf "%s\n" "$as_me:${as_lineno-$LINENO}: found $as_dir$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+fi
+fi
+ac_ct_CC=$ac_cv_prog_ac_ct_CC
+if test -n "$ac_ct_CC"; then
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_ct_CC" >&5
+printf "%s\n" "$ac_ct_CC" >&6; }
+else
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
+fi
+
+  if test "x$ac_ct_CC" = x; then
+    CC=""
+  else
+    case $cross_compiling:$ac_tool_warned in
+yes:)
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5
+printf "%s\n" "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;}
+ac_tool_warned=yes ;;
+esac
+    CC=$ac_ct_CC
+  fi
+else
+  CC="$ac_cv_prog_CC"
+fi
+
+if test -z "$CC"; then
+          if test -n "$ac_tool_prefix"; then
+    # Extract the first word of "${ac_tool_prefix}cc", so it can be a program name with args.
+set dummy ${ac_tool_prefix}cc; ac_word=$2
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+printf %s "checking for $ac_word... " >&6; }
+if test ${ac_cv_prog_CC+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  if test -n "$CC"; then
+  ac_cv_prog_CC="$CC" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  case $as_dir in #(((
+    '') as_dir=./ ;;
+    */) ;;
+    *) as_dir=$as_dir/ ;;
+  esac
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if as_fn_executable_p "$as_dir$ac_word$ac_exec_ext"; then
+    ac_cv_prog_CC="${ac_tool_prefix}cc"
+    printf "%s\n" "$as_me:${as_lineno-$LINENO}: found $as_dir$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+fi
+fi
+CC=$ac_cv_prog_CC
+if test -n "$CC"; then
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $CC" >&5
+printf "%s\n" "$CC" >&6; }
+else
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
+fi
+
+
+  fi
+fi
+if test -z "$CC"; then
+  # Extract the first word of "cc", so it can be a program name with args.
+set dummy cc; ac_word=$2
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+printf %s "checking for $ac_word... " >&6; }
+if test ${ac_cv_prog_CC+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  if test -n "$CC"; then
+  ac_cv_prog_CC="$CC" # Let the user override the test.
+else
+  ac_prog_rejected=no
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  case $as_dir in #(((
+    '') as_dir=./ ;;
+    */) ;;
+    *) as_dir=$as_dir/ ;;
+  esac
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if as_fn_executable_p "$as_dir$ac_word$ac_exec_ext"; then
+    if test "$as_dir$ac_word$ac_exec_ext" = "/usr/ucb/cc"; then
+       ac_prog_rejected=yes
+       continue
+     fi
+    ac_cv_prog_CC="cc"
+    printf "%s\n" "$as_me:${as_lineno-$LINENO}: found $as_dir$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+if test $ac_prog_rejected = yes; then
+  # We found a bogon in the path, so make sure we never use it.
+  set dummy $ac_cv_prog_CC
+  shift
+  if test $# != 0; then
+    # We chose a different compiler from the bogus one.
+    # However, it has the same basename, so the bogon will be chosen
+    # first if we set CC to just the basename; use the full file name.
+    shift
+    ac_cv_prog_CC="$as_dir$ac_word${1+' '}$@"
+  fi
+fi
+fi
+fi
+CC=$ac_cv_prog_CC
+if test -n "$CC"; then
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $CC" >&5
+printf "%s\n" "$CC" >&6; }
+else
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
+fi
+
+
+fi
+if test -z "$CC"; then
+  if test -n "$ac_tool_prefix"; then
+  for ac_prog in cl.exe
+  do
+    # Extract the first word of "$ac_tool_prefix$ac_prog", so it can be a program name with args.
+set dummy $ac_tool_prefix$ac_prog; ac_word=$2
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+printf %s "checking for $ac_word... " >&6; }
+if test ${ac_cv_prog_CC+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  if test -n "$CC"; then
+  ac_cv_prog_CC="$CC" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  case $as_dir in #(((
+    '') as_dir=./ ;;
+    */) ;;
+    *) as_dir=$as_dir/ ;;
+  esac
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if as_fn_executable_p "$as_dir$ac_word$ac_exec_ext"; then
+    ac_cv_prog_CC="$ac_tool_prefix$ac_prog"
+    printf "%s\n" "$as_me:${as_lineno-$LINENO}: found $as_dir$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+fi
+fi
+CC=$ac_cv_prog_CC
+if test -n "$CC"; then
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $CC" >&5
+printf "%s\n" "$CC" >&6; }
+else
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
+fi
+
+
+    test -n "$CC" && break
+  done
+fi
+if test -z "$CC"; then
+  ac_ct_CC=$CC
+  for ac_prog in cl.exe
+do
+  # Extract the first word of "$ac_prog", so it can be a program name with args.
+set dummy $ac_prog; ac_word=$2
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+printf %s "checking for $ac_word... " >&6; }
+if test ${ac_cv_prog_ac_ct_CC+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  if test -n "$ac_ct_CC"; then
+  ac_cv_prog_ac_ct_CC="$ac_ct_CC" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  case $as_dir in #(((
+    '') as_dir=./ ;;
+    */) ;;
+    *) as_dir=$as_dir/ ;;
+  esac
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if as_fn_executable_p "$as_dir$ac_word$ac_exec_ext"; then
+    ac_cv_prog_ac_ct_CC="$ac_prog"
+    printf "%s\n" "$as_me:${as_lineno-$LINENO}: found $as_dir$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+fi
+fi
+ac_ct_CC=$ac_cv_prog_ac_ct_CC
+if test -n "$ac_ct_CC"; then
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_ct_CC" >&5
+printf "%s\n" "$ac_ct_CC" >&6; }
+else
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
+fi
+
+
+  test -n "$ac_ct_CC" && break
+done
+
+  if test "x$ac_ct_CC" = x; then
+    CC=""
+  else
+    case $cross_compiling:$ac_tool_warned in
+yes:)
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5
+printf "%s\n" "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;}
+ac_tool_warned=yes ;;
+esac
+    CC=$ac_ct_CC
+  fi
+fi
+
+fi
+if test -z "$CC"; then
+  if test -n "$ac_tool_prefix"; then
+  # Extract the first word of "${ac_tool_prefix}clang", so it can be a program name with args.
+set dummy ${ac_tool_prefix}clang; ac_word=$2
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+printf %s "checking for $ac_word... " >&6; }
+if test ${ac_cv_prog_CC+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  if test -n "$CC"; then
+  ac_cv_prog_CC="$CC" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  case $as_dir in #(((
+    '') as_dir=./ ;;
+    */) ;;
+    *) as_dir=$as_dir/ ;;
+  esac
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if as_fn_executable_p "$as_dir$ac_word$ac_exec_ext"; then
+    ac_cv_prog_CC="${ac_tool_prefix}clang"
+    printf "%s\n" "$as_me:${as_lineno-$LINENO}: found $as_dir$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+fi
+fi
+CC=$ac_cv_prog_CC
+if test -n "$CC"; then
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $CC" >&5
+printf "%s\n" "$CC" >&6; }
+else
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
+fi
+
+
+fi
+if test -z "$ac_cv_prog_CC"; then
+  ac_ct_CC=$CC
+  # Extract the first word of "clang", so it can be a program name with args.
+set dummy clang; ac_word=$2
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+printf %s "checking for $ac_word... " >&6; }
+if test ${ac_cv_prog_ac_ct_CC+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  if test -n "$ac_ct_CC"; then
+  ac_cv_prog_ac_ct_CC="$ac_ct_CC" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  case $as_dir in #(((
+    '') as_dir=./ ;;
+    */) ;;
+    *) as_dir=$as_dir/ ;;
+  esac
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if as_fn_executable_p "$as_dir$ac_word$ac_exec_ext"; then
+    ac_cv_prog_ac_ct_CC="clang"
+    printf "%s\n" "$as_me:${as_lineno-$LINENO}: found $as_dir$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+fi
+fi
+ac_ct_CC=$ac_cv_prog_ac_ct_CC
+if test -n "$ac_ct_CC"; then
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_ct_CC" >&5
+printf "%s\n" "$ac_ct_CC" >&6; }
+else
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
+fi
+
+  if test "x$ac_ct_CC" = x; then
+    CC=""
+  else
+    case $cross_compiling:$ac_tool_warned in
+yes:)
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5
+printf "%s\n" "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;}
+ac_tool_warned=yes ;;
+esac
+    CC=$ac_ct_CC
+  fi
+else
+  CC="$ac_cv_prog_CC"
+fi
+
+fi
+
+
+test -z "$CC" && { { printf "%s\n" "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
+printf "%s\n" "$as_me: error: in \`$ac_pwd':" >&2;}
+as_fn_error $? "no acceptable C compiler found in \$PATH
+See \`config.log' for more details" "$LINENO" 5; }
+
+# Provide some information about the compiler.
+printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for C compiler version" >&5
+set X $ac_compile
+ac_compiler=$2
+for ac_option in --version -v -V -qversion -version; do
+  { { ac_try="$ac_compiler $ac_option >&5"
+case "(($ac_try" in
+  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
+  *) ac_try_echo=$ac_try;;
+esac
+eval ac_try_echo="\"\$as_me:${as_lineno-$LINENO}: $ac_try_echo\""
+printf "%s\n" "$ac_try_echo"; } >&5
+  (eval "$ac_compiler $ac_option >&5") 2>conftest.err
+  ac_status=$?
+  if test -s conftest.err; then
+    sed '10a\
+... rest of stderr output deleted ...
+         10q' conftest.err >conftest.er1
+    cat conftest.er1 >&5
+  fi
+  rm -f conftest.er1 conftest.err
+  printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; }
+done
+
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+int
+main (void)
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+ac_clean_files_save=$ac_clean_files
+ac_clean_files="$ac_clean_files a.out a.out.dSYM a.exe b.out"
+# Try to create an executable without -o first, disregard a.out.
+# It will help us diagnose broken compilers, and finding out an intuition
+# of exeext.
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether the C compiler works" >&5
+printf %s "checking whether the C compiler works... " >&6; }
+ac_link_default=`printf "%s\n" "$ac_link" | sed 's/ -o *conftest[^ ]*//'`
+
+# The possible output files:
+ac_files="a.out conftest.exe conftest a.exe a_out.exe b.out conftest.*"
+
+ac_rmfiles=
+for ac_file in $ac_files
+do
+  case $ac_file in
+    *.$ac_ext | *.xcoff | *.tds | *.d | *.pdb | *.xSYM | *.bb | *.bbg | *.map | *.inf | *.dSYM | *.o | *.obj ) ;;
+    * ) ac_rmfiles="$ac_rmfiles $ac_file";;
+  esac
+done
+rm -f $ac_rmfiles
+
+if { { ac_try="$ac_link_default"
+case "(($ac_try" in
+  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
+  *) ac_try_echo=$ac_try;;
+esac
+eval ac_try_echo="\"\$as_me:${as_lineno-$LINENO}: $ac_try_echo\""
+printf "%s\n" "$ac_try_echo"; } >&5
+  (eval "$ac_link_default") 2>&5
+  ac_status=$?
+  printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; }
+then :
+  # Autoconf-2.13 could set the ac_cv_exeext variable to `no'.
+# So ignore a value of `no', otherwise this would lead to `EXEEXT = no'
+# in a Makefile.  We should not override ac_cv_exeext if it was cached,
+# so that the user can short-circuit this test for compilers unknown to
+# Autoconf.
+for ac_file in $ac_files ''
+do
+  test -f "$ac_file" || continue
+  case $ac_file in
+    *.$ac_ext | *.xcoff | *.tds | *.d | *.pdb | *.xSYM | *.bb | *.bbg | *.map | *.inf | *.dSYM | *.o | *.obj )
+	;;
+    [ab].out )
+	# We found the default executable, but exeext='' is most
+	# certainly right.
+	break;;
+    *.* )
+	if test ${ac_cv_exeext+y} && test "$ac_cv_exeext" != no;
+	then :; else
+	   ac_cv_exeext=`expr "$ac_file" : '[^.]*\(\..*\)'`
+	fi
+	# We set ac_cv_exeext here because the later test for it is not
+	# safe: cross compilers may not add the suffix if given an `-o'
+	# argument, so we may need to know it at that point already.
+	# Even if this section looks crufty: it has the advantage of
+	# actually working.
+	break;;
+    * )
+	break;;
+  esac
+done
+test "$ac_cv_exeext" = no && ac_cv_exeext=
+
+else $as_nop
+  ac_file=''
+fi
+if test -z "$ac_file"
+then :
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
+printf "%s\n" "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+{ { printf "%s\n" "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
+printf "%s\n" "$as_me: error: in \`$ac_pwd':" >&2;}
+as_fn_error 77 "C compiler cannot create executables
+See \`config.log' for more details" "$LINENO" 5; }
+else $as_nop
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+printf "%s\n" "yes" >&6; }
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for C compiler default output file name" >&5
+printf %s "checking for C compiler default output file name... " >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_file" >&5
+printf "%s\n" "$ac_file" >&6; }
+ac_exeext=$ac_cv_exeext
+
+rm -f -r a.out a.out.dSYM a.exe conftest$ac_cv_exeext b.out
+ac_clean_files=$ac_clean_files_save
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for suffix of executables" >&5
+printf %s "checking for suffix of executables... " >&6; }
+if { { ac_try="$ac_link"
+case "(($ac_try" in
+  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
+  *) ac_try_echo=$ac_try;;
+esac
+eval ac_try_echo="\"\$as_me:${as_lineno-$LINENO}: $ac_try_echo\""
+printf "%s\n" "$ac_try_echo"; } >&5
+  (eval "$ac_link") 2>&5
+  ac_status=$?
+  printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; }
+then :
+  # If both `conftest.exe' and `conftest' are `present' (well, observable)
+# catch `conftest.exe'.  For instance with Cygwin, `ls conftest' will
+# work properly (i.e., refer to `conftest.exe'), while it won't with
+# `rm'.
+for ac_file in conftest.exe conftest conftest.*; do
+  test -f "$ac_file" || continue
+  case $ac_file in
+    *.$ac_ext | *.xcoff | *.tds | *.d | *.pdb | *.xSYM | *.bb | *.bbg | *.map | *.inf | *.dSYM | *.o | *.obj ) ;;
+    *.* ) ac_cv_exeext=`expr "$ac_file" : '[^.]*\(\..*\)'`
+	  break;;
+    * ) break;;
+  esac
+done
+else $as_nop
+  { { printf "%s\n" "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
+printf "%s\n" "$as_me: error: in \`$ac_pwd':" >&2;}
+as_fn_error $? "cannot compute suffix of executables: cannot compile and link
+See \`config.log' for more details" "$LINENO" 5; }
+fi
+rm -f conftest conftest$ac_cv_exeext
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_exeext" >&5
+printf "%s\n" "$ac_cv_exeext" >&6; }
+
+rm -f conftest.$ac_ext
+EXEEXT=$ac_cv_exeext
+ac_exeext=$EXEEXT
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <stdio.h>
+int
+main (void)
+{
+FILE *f = fopen ("conftest.out", "w");
+ return ferror (f) || fclose (f) != 0;
+
+  ;
+  return 0;
+}
+_ACEOF
+ac_clean_files="$ac_clean_files conftest.out"
+# Check that the compiler produces executables we can run.  If not, either
+# the compiler is broken, or we cross compile.
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether we are cross compiling" >&5
+printf %s "checking whether we are cross compiling... " >&6; }
+if test "$cross_compiling" != yes; then
+  { { ac_try="$ac_link"
+case "(($ac_try" in
+  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
+  *) ac_try_echo=$ac_try;;
+esac
+eval ac_try_echo="\"\$as_me:${as_lineno-$LINENO}: $ac_try_echo\""
+printf "%s\n" "$ac_try_echo"; } >&5
+  (eval "$ac_link") 2>&5
+  ac_status=$?
+  printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; }
+  if { ac_try='./conftest$ac_cv_exeext'
+  { { case "(($ac_try" in
+  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
+  *) ac_try_echo=$ac_try;;
+esac
+eval ac_try_echo="\"\$as_me:${as_lineno-$LINENO}: $ac_try_echo\""
+printf "%s\n" "$ac_try_echo"; } >&5
+  (eval "$ac_try") 2>&5
+  ac_status=$?
+  printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; }; }; then
+    cross_compiling=no
+  else
+    if test "$cross_compiling" = maybe; then
+	cross_compiling=yes
+    else
+	{ { printf "%s\n" "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
+printf "%s\n" "$as_me: error: in \`$ac_pwd':" >&2;}
+as_fn_error 77 "cannot run C compiled programs.
+If you meant to cross compile, use \`--host'.
+See \`config.log' for more details" "$LINENO" 5; }
+    fi
+  fi
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $cross_compiling" >&5
+printf "%s\n" "$cross_compiling" >&6; }
+
+rm -f conftest.$ac_ext conftest$ac_cv_exeext conftest.out
+ac_clean_files=$ac_clean_files_save
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for suffix of object files" >&5
+printf %s "checking for suffix of object files... " >&6; }
+if test ${ac_cv_objext+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+int
+main (void)
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.o conftest.obj
+if { { ac_try="$ac_compile"
+case "(($ac_try" in
+  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
+  *) ac_try_echo=$ac_try;;
+esac
+eval ac_try_echo="\"\$as_me:${as_lineno-$LINENO}: $ac_try_echo\""
+printf "%s\n" "$ac_try_echo"; } >&5
+  (eval "$ac_compile") 2>&5
+  ac_status=$?
+  printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; }
+then :
+  for ac_file in conftest.o conftest.obj conftest.*; do
+  test -f "$ac_file" || continue;
+  case $ac_file in
+    *.$ac_ext | *.xcoff | *.tds | *.d | *.pdb | *.xSYM | *.bb | *.bbg | *.map | *.inf | *.dSYM ) ;;
+    *) ac_cv_objext=`expr "$ac_file" : '.*\.\(.*\)'`
+       break;;
+  esac
+done
+else $as_nop
+  printf "%s\n" "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+{ { printf "%s\n" "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
+printf "%s\n" "$as_me: error: in \`$ac_pwd':" >&2;}
+as_fn_error $? "cannot compute suffix of object files: cannot compile
+See \`config.log' for more details" "$LINENO" 5; }
+fi
+rm -f conftest.$ac_cv_objext conftest.$ac_ext
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_objext" >&5
+printf "%s\n" "$ac_cv_objext" >&6; }
+OBJEXT=$ac_cv_objext
+ac_objext=$OBJEXT
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether the compiler supports GNU C" >&5
+printf %s "checking whether the compiler supports GNU C... " >&6; }
+if test ${ac_cv_c_compiler_gnu+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+int
+main (void)
+{
+#ifndef __GNUC__
+       choke me
+#endif
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  ac_compiler_gnu=yes
+else $as_nop
+  ac_compiler_gnu=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+ac_cv_c_compiler_gnu=$ac_compiler_gnu
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_c_compiler_gnu" >&5
+printf "%s\n" "$ac_cv_c_compiler_gnu" >&6; }
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+if test $ac_compiler_gnu = yes; then
+  GCC=yes
+else
+  GCC=
+fi
+ac_test_CFLAGS=${CFLAGS+y}
+ac_save_CFLAGS=$CFLAGS
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether $CC accepts -g" >&5
+printf %s "checking whether $CC accepts -g... " >&6; }
+if test ${ac_cv_prog_cc_g+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  ac_save_c_werror_flag=$ac_c_werror_flag
+   ac_c_werror_flag=yes
+   ac_cv_prog_cc_g=no
+   CFLAGS="-g"
+   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+int
+main (void)
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  ac_cv_prog_cc_g=yes
+else $as_nop
+  CFLAGS=""
+      cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+int
+main (void)
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+
+else $as_nop
+  ac_c_werror_flag=$ac_save_c_werror_flag
+	 CFLAGS="-g"
+	 cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+int
+main (void)
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  ac_cv_prog_cc_g=yes
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+   ac_c_werror_flag=$ac_save_c_werror_flag
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_prog_cc_g" >&5
+printf "%s\n" "$ac_cv_prog_cc_g" >&6; }
+if test $ac_test_CFLAGS; then
+  CFLAGS=$ac_save_CFLAGS
+elif test $ac_cv_prog_cc_g = yes; then
+  if test "$GCC" = yes; then
+    CFLAGS="-g -O2"
+  else
+    CFLAGS="-g"
+  fi
+else
+  if test "$GCC" = yes; then
+    CFLAGS="-O2"
+  else
+    CFLAGS=
+  fi
+fi
+ac_prog_cc_stdc=no
+if test x$ac_prog_cc_stdc = xno
+then :
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $CC option to enable C11 features" >&5
+printf %s "checking for $CC option to enable C11 features... " >&6; }
+if test ${ac_cv_prog_cc_c11+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  ac_cv_prog_cc_c11=no
+ac_save_CC=$CC
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+$ac_c_conftest_c11_program
+_ACEOF
+for ac_arg in '' -std=gnu11
+do
+  CC="$ac_save_CC $ac_arg"
+  if ac_fn_c_try_compile "$LINENO"
+then :
+  ac_cv_prog_cc_c11=$ac_arg
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam
+  test "x$ac_cv_prog_cc_c11" != "xno" && break
+done
+rm -f conftest.$ac_ext
+CC=$ac_save_CC
+fi
+
+if test "x$ac_cv_prog_cc_c11" = xno
+then :
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: unsupported" >&5
+printf "%s\n" "unsupported" >&6; }
+else $as_nop
+  if test "x$ac_cv_prog_cc_c11" = x
+then :
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: none needed" >&5
+printf "%s\n" "none needed" >&6; }
+else $as_nop
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_prog_cc_c11" >&5
+printf "%s\n" "$ac_cv_prog_cc_c11" >&6; }
+     CC="$CC $ac_cv_prog_cc_c11"
+fi
+  ac_cv_prog_cc_stdc=$ac_cv_prog_cc_c11
+  ac_prog_cc_stdc=c11
+fi
+fi
+if test x$ac_prog_cc_stdc = xno
+then :
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $CC option to enable C99 features" >&5
+printf %s "checking for $CC option to enable C99 features... " >&6; }
+if test ${ac_cv_prog_cc_c99+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  ac_cv_prog_cc_c99=no
+ac_save_CC=$CC
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+$ac_c_conftest_c99_program
+_ACEOF
+for ac_arg in '' -std=gnu99 -std=c99 -c99 -qlanglvl=extc1x -qlanglvl=extc99 -AC99 -D_STDC_C99=
+do
+  CC="$ac_save_CC $ac_arg"
+  if ac_fn_c_try_compile "$LINENO"
+then :
+  ac_cv_prog_cc_c99=$ac_arg
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam
+  test "x$ac_cv_prog_cc_c99" != "xno" && break
+done
+rm -f conftest.$ac_ext
+CC=$ac_save_CC
+fi
+
+if test "x$ac_cv_prog_cc_c99" = xno
+then :
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: unsupported" >&5
+printf "%s\n" "unsupported" >&6; }
+else $as_nop
+  if test "x$ac_cv_prog_cc_c99" = x
+then :
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: none needed" >&5
+printf "%s\n" "none needed" >&6; }
+else $as_nop
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_prog_cc_c99" >&5
+printf "%s\n" "$ac_cv_prog_cc_c99" >&6; }
+     CC="$CC $ac_cv_prog_cc_c99"
+fi
+  ac_cv_prog_cc_stdc=$ac_cv_prog_cc_c99
+  ac_prog_cc_stdc=c99
+fi
+fi
+if test x$ac_prog_cc_stdc = xno
+then :
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $CC option to enable C89 features" >&5
+printf %s "checking for $CC option to enable C89 features... " >&6; }
+if test ${ac_cv_prog_cc_c89+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  ac_cv_prog_cc_c89=no
+ac_save_CC=$CC
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+$ac_c_conftest_c89_program
+_ACEOF
+for ac_arg in '' -qlanglvl=extc89 -qlanglvl=ansi -std -Ae "-Aa -D_HPUX_SOURCE" "-Xc -D__EXTENSIONS__"
+do
+  CC="$ac_save_CC $ac_arg"
+  if ac_fn_c_try_compile "$LINENO"
+then :
+  ac_cv_prog_cc_c89=$ac_arg
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam
+  test "x$ac_cv_prog_cc_c89" != "xno" && break
+done
+rm -f conftest.$ac_ext
+CC=$ac_save_CC
+fi
+
+if test "x$ac_cv_prog_cc_c89" = xno
+then :
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: unsupported" >&5
+printf "%s\n" "unsupported" >&6; }
+else $as_nop
+  if test "x$ac_cv_prog_cc_c89" = x
+then :
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: none needed" >&5
+printf "%s\n" "none needed" >&6; }
+else $as_nop
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_prog_cc_c89" >&5
+printf "%s\n" "$ac_cv_prog_cc_c89" >&6; }
+     CC="$CC $ac_cv_prog_cc_c89"
+fi
+  ac_cv_prog_cc_stdc=$ac_cv_prog_cc_c89
+  ac_prog_cc_stdc=c89
+fi
+fi
+
+ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+
+if test "x$GCC" != "xyes" ; then
+
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether compiler is MSVC" >&5
+printf %s "checking whether compiler is MSVC... " >&6; }
+if test ${je_cv_msvc+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+int
+main (void)
+{
+
+#ifndef _MSC_VER
+  int fail-1;
+#endif
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  je_cv_msvc=yes
+else $as_nop
+  je_cv_msvc=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $je_cv_msvc" >&5
+printf "%s\n" "$je_cv_msvc" >&6; }
+fi
+
+je_cv_cray_prgenv_wrapper=""
+if test "x${PE_ENV}" != "x" ; then
+  case "${CC}" in
+    CC|cc)
+	je_cv_cray_prgenv_wrapper="yes"
+	;;
+    *)
+       ;;
+  esac
+fi
+
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether compiler is cray" >&5
+printf %s "checking whether compiler is cray... " >&6; }
+if test ${je_cv_cray+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+int
+main (void)
+{
+
+#ifndef _CRAYC
+  int fail-1;
+#endif
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  je_cv_cray=yes
+else $as_nop
+  je_cv_cray=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $je_cv_cray" >&5
+printf "%s\n" "$je_cv_cray" >&6; }
+
+if test "x${je_cv_cray}" = "xyes" ; then
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether cray compiler version is 8.4" >&5
+printf %s "checking whether cray compiler version is 8.4... " >&6; }
+if test ${je_cv_cray_84+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+int
+main (void)
+{
+
+#if !(_RELEASE_MAJOR == 8 && _RELEASE_MINOR == 4)
+  int fail-1;
+#endif
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  je_cv_cray_84=yes
+else $as_nop
+  je_cv_cray_84=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $je_cv_cray_84" >&5
+printf "%s\n" "$je_cv_cray_84" >&6; }
+fi
+
+if test "x$GCC" = "xyes" ; then
+
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether compiler supports -std=gnu11" >&5
+printf %s "checking whether compiler supports -std=gnu11... " >&6; }
+T_CONFIGURE_CFLAGS="${CONFIGURE_CFLAGS}"
+T_APPEND_V=-std=gnu11
+  if test "x${CONFIGURE_CFLAGS}" = "x" -o "x${T_APPEND_V}" = "x" ; then
+  CONFIGURE_CFLAGS="${CONFIGURE_CFLAGS}${T_APPEND_V}"
+else
+  CONFIGURE_CFLAGS="${CONFIGURE_CFLAGS} ${T_APPEND_V}"
+fi
+
+
+if test "x${CONFIGURE_CFLAGS}" = "x" -o "x${SPECIFIED_CFLAGS}" = "x" ; then
+  CFLAGS="${CONFIGURE_CFLAGS}${SPECIFIED_CFLAGS}"
+else
+  CFLAGS="${CONFIGURE_CFLAGS} ${SPECIFIED_CFLAGS}"
+fi
+
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+
+int
+main (void)
+{
+
+    return 0;
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  je_cv_cflags_added=-std=gnu11
+              { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+printf "%s\n" "yes" >&6; }
+else $as_nop
+  je_cv_cflags_added=
+              { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
+              CONFIGURE_CFLAGS="${T_CONFIGURE_CFLAGS}"
+
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+if test "x${CONFIGURE_CFLAGS}" = "x" -o "x${SPECIFIED_CFLAGS}" = "x" ; then
+  CFLAGS="${CONFIGURE_CFLAGS}${SPECIFIED_CFLAGS}"
+else
+  CFLAGS="${CONFIGURE_CFLAGS} ${SPECIFIED_CFLAGS}"
+fi
+
+
+  if test "x$je_cv_cflags_added" = "x-std=gnu11" ; then
+
+printf "%s\n" "#define JEMALLOC_HAS_RESTRICT  " >>confdefs.h
+
+  else
+
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether compiler supports -std=gnu99" >&5
+printf %s "checking whether compiler supports -std=gnu99... " >&6; }
+T_CONFIGURE_CFLAGS="${CONFIGURE_CFLAGS}"
+T_APPEND_V=-std=gnu99
+  if test "x${CONFIGURE_CFLAGS}" = "x" -o "x${T_APPEND_V}" = "x" ; then
+  CONFIGURE_CFLAGS="${CONFIGURE_CFLAGS}${T_APPEND_V}"
+else
+  CONFIGURE_CFLAGS="${CONFIGURE_CFLAGS} ${T_APPEND_V}"
+fi
+
+
+if test "x${CONFIGURE_CFLAGS}" = "x" -o "x${SPECIFIED_CFLAGS}" = "x" ; then
+  CFLAGS="${CONFIGURE_CFLAGS}${SPECIFIED_CFLAGS}"
+else
+  CFLAGS="${CONFIGURE_CFLAGS} ${SPECIFIED_CFLAGS}"
+fi
+
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+
+int
+main (void)
+{
+
+    return 0;
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  je_cv_cflags_added=-std=gnu99
+              { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+printf "%s\n" "yes" >&6; }
+else $as_nop
+  je_cv_cflags_added=
+              { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
+              CONFIGURE_CFLAGS="${T_CONFIGURE_CFLAGS}"
+
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+if test "x${CONFIGURE_CFLAGS}" = "x" -o "x${SPECIFIED_CFLAGS}" = "x" ; then
+  CFLAGS="${CONFIGURE_CFLAGS}${SPECIFIED_CFLAGS}"
+else
+  CFLAGS="${CONFIGURE_CFLAGS} ${SPECIFIED_CFLAGS}"
+fi
+
+
+    if test "x$je_cv_cflags_added" = "x-std=gnu99" ; then
+
+printf "%s\n" "#define JEMALLOC_HAS_RESTRICT  " >>confdefs.h
+
+    fi
+  fi
+
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether compiler supports -Werror=unknown-warning-option" >&5
+printf %s "checking whether compiler supports -Werror=unknown-warning-option... " >&6; }
+T_CONFIGURE_CFLAGS="${CONFIGURE_CFLAGS}"
+T_APPEND_V=-Werror=unknown-warning-option
+  if test "x${CONFIGURE_CFLAGS}" = "x" -o "x${T_APPEND_V}" = "x" ; then
+  CONFIGURE_CFLAGS="${CONFIGURE_CFLAGS}${T_APPEND_V}"
+else
+  CONFIGURE_CFLAGS="${CONFIGURE_CFLAGS} ${T_APPEND_V}"
+fi
+
+
+if test "x${CONFIGURE_CFLAGS}" = "x" -o "x${SPECIFIED_CFLAGS}" = "x" ; then
+  CFLAGS="${CONFIGURE_CFLAGS}${SPECIFIED_CFLAGS}"
+else
+  CFLAGS="${CONFIGURE_CFLAGS} ${SPECIFIED_CFLAGS}"
+fi
+
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+
+int
+main (void)
+{
+
+    return 0;
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  je_cv_cflags_added=-Werror=unknown-warning-option
+              { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+printf "%s\n" "yes" >&6; }
+else $as_nop
+  je_cv_cflags_added=
+              { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
+              CONFIGURE_CFLAGS="${T_CONFIGURE_CFLAGS}"
+
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+if test "x${CONFIGURE_CFLAGS}" = "x" -o "x${SPECIFIED_CFLAGS}" = "x" ; then
+  CFLAGS="${CONFIGURE_CFLAGS}${SPECIFIED_CFLAGS}"
+else
+  CFLAGS="${CONFIGURE_CFLAGS} ${SPECIFIED_CFLAGS}"
+fi
+
+
+
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether compiler supports -Wall" >&5
+printf %s "checking whether compiler supports -Wall... " >&6; }
+T_CONFIGURE_CFLAGS="${CONFIGURE_CFLAGS}"
+T_APPEND_V=-Wall
+  if test "x${CONFIGURE_CFLAGS}" = "x" -o "x${T_APPEND_V}" = "x" ; then
+  CONFIGURE_CFLAGS="${CONFIGURE_CFLAGS}${T_APPEND_V}"
+else
+  CONFIGURE_CFLAGS="${CONFIGURE_CFLAGS} ${T_APPEND_V}"
+fi
+
+
+if test "x${CONFIGURE_CFLAGS}" = "x" -o "x${SPECIFIED_CFLAGS}" = "x" ; then
+  CFLAGS="${CONFIGURE_CFLAGS}${SPECIFIED_CFLAGS}"
+else
+  CFLAGS="${CONFIGURE_CFLAGS} ${SPECIFIED_CFLAGS}"
+fi
+
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+
+int
+main (void)
+{
+
+    return 0;
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  je_cv_cflags_added=-Wall
+              { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+printf "%s\n" "yes" >&6; }
+else $as_nop
+  je_cv_cflags_added=
+              { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
+              CONFIGURE_CFLAGS="${T_CONFIGURE_CFLAGS}"
+
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+if test "x${CONFIGURE_CFLAGS}" = "x" -o "x${SPECIFIED_CFLAGS}" = "x" ; then
+  CFLAGS="${CONFIGURE_CFLAGS}${SPECIFIED_CFLAGS}"
+else
+  CFLAGS="${CONFIGURE_CFLAGS} ${SPECIFIED_CFLAGS}"
+fi
+
+
+
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether compiler supports -Wextra" >&5
+printf %s "checking whether compiler supports -Wextra... " >&6; }
+T_CONFIGURE_CFLAGS="${CONFIGURE_CFLAGS}"
+T_APPEND_V=-Wextra
+  if test "x${CONFIGURE_CFLAGS}" = "x" -o "x${T_APPEND_V}" = "x" ; then
+  CONFIGURE_CFLAGS="${CONFIGURE_CFLAGS}${T_APPEND_V}"
+else
+  CONFIGURE_CFLAGS="${CONFIGURE_CFLAGS} ${T_APPEND_V}"
+fi
+
+
+if test "x${CONFIGURE_CFLAGS}" = "x" -o "x${SPECIFIED_CFLAGS}" = "x" ; then
+  CFLAGS="${CONFIGURE_CFLAGS}${SPECIFIED_CFLAGS}"
+else
+  CFLAGS="${CONFIGURE_CFLAGS} ${SPECIFIED_CFLAGS}"
+fi
+
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+
+int
+main (void)
+{
+
+    return 0;
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  je_cv_cflags_added=-Wextra
+              { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+printf "%s\n" "yes" >&6; }
+else $as_nop
+  je_cv_cflags_added=
+              { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
+              CONFIGURE_CFLAGS="${T_CONFIGURE_CFLAGS}"
+
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+if test "x${CONFIGURE_CFLAGS}" = "x" -o "x${SPECIFIED_CFLAGS}" = "x" ; then
+  CFLAGS="${CONFIGURE_CFLAGS}${SPECIFIED_CFLAGS}"
+else
+  CFLAGS="${CONFIGURE_CFLAGS} ${SPECIFIED_CFLAGS}"
+fi
+
+
+
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether compiler supports -Wshorten-64-to-32" >&5
+printf %s "checking whether compiler supports -Wshorten-64-to-32... " >&6; }
+T_CONFIGURE_CFLAGS="${CONFIGURE_CFLAGS}"
+T_APPEND_V=-Wshorten-64-to-32
+  if test "x${CONFIGURE_CFLAGS}" = "x" -o "x${T_APPEND_V}" = "x" ; then
+  CONFIGURE_CFLAGS="${CONFIGURE_CFLAGS}${T_APPEND_V}"
+else
+  CONFIGURE_CFLAGS="${CONFIGURE_CFLAGS} ${T_APPEND_V}"
+fi
+
+
+if test "x${CONFIGURE_CFLAGS}" = "x" -o "x${SPECIFIED_CFLAGS}" = "x" ; then
+  CFLAGS="${CONFIGURE_CFLAGS}${SPECIFIED_CFLAGS}"
+else
+  CFLAGS="${CONFIGURE_CFLAGS} ${SPECIFIED_CFLAGS}"
+fi
+
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+
+int
+main (void)
+{
+
+    return 0;
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  je_cv_cflags_added=-Wshorten-64-to-32
+              { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+printf "%s\n" "yes" >&6; }
+else $as_nop
+  je_cv_cflags_added=
+              { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
+              CONFIGURE_CFLAGS="${T_CONFIGURE_CFLAGS}"
+
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+if test "x${CONFIGURE_CFLAGS}" = "x" -o "x${SPECIFIED_CFLAGS}" = "x" ; then
+  CFLAGS="${CONFIGURE_CFLAGS}${SPECIFIED_CFLAGS}"
+else
+  CFLAGS="${CONFIGURE_CFLAGS} ${SPECIFIED_CFLAGS}"
+fi
+
+
+
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether compiler supports -Wsign-compare" >&5
+printf %s "checking whether compiler supports -Wsign-compare... " >&6; }
+T_CONFIGURE_CFLAGS="${CONFIGURE_CFLAGS}"
+T_APPEND_V=-Wsign-compare
+  if test "x${CONFIGURE_CFLAGS}" = "x" -o "x${T_APPEND_V}" = "x" ; then
+  CONFIGURE_CFLAGS="${CONFIGURE_CFLAGS}${T_APPEND_V}"
+else
+  CONFIGURE_CFLAGS="${CONFIGURE_CFLAGS} ${T_APPEND_V}"
+fi
+
+
+if test "x${CONFIGURE_CFLAGS}" = "x" -o "x${SPECIFIED_CFLAGS}" = "x" ; then
+  CFLAGS="${CONFIGURE_CFLAGS}${SPECIFIED_CFLAGS}"
+else
+  CFLAGS="${CONFIGURE_CFLAGS} ${SPECIFIED_CFLAGS}"
+fi
+
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+
+int
+main (void)
+{
+
+    return 0;
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  je_cv_cflags_added=-Wsign-compare
+              { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+printf "%s\n" "yes" >&6; }
+else $as_nop
+  je_cv_cflags_added=
+              { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
+              CONFIGURE_CFLAGS="${T_CONFIGURE_CFLAGS}"
+
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+if test "x${CONFIGURE_CFLAGS}" = "x" -o "x${SPECIFIED_CFLAGS}" = "x" ; then
+  CFLAGS="${CONFIGURE_CFLAGS}${SPECIFIED_CFLAGS}"
+else
+  CFLAGS="${CONFIGURE_CFLAGS} ${SPECIFIED_CFLAGS}"
+fi
+
+
+
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether compiler supports -Wundef" >&5
+printf %s "checking whether compiler supports -Wundef... " >&6; }
+T_CONFIGURE_CFLAGS="${CONFIGURE_CFLAGS}"
+T_APPEND_V=-Wundef
+  if test "x${CONFIGURE_CFLAGS}" = "x" -o "x${T_APPEND_V}" = "x" ; then
+  CONFIGURE_CFLAGS="${CONFIGURE_CFLAGS}${T_APPEND_V}"
+else
+  CONFIGURE_CFLAGS="${CONFIGURE_CFLAGS} ${T_APPEND_V}"
+fi
+
+
+if test "x${CONFIGURE_CFLAGS}" = "x" -o "x${SPECIFIED_CFLAGS}" = "x" ; then
+  CFLAGS="${CONFIGURE_CFLAGS}${SPECIFIED_CFLAGS}"
+else
+  CFLAGS="${CONFIGURE_CFLAGS} ${SPECIFIED_CFLAGS}"
+fi
+
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+
+int
+main (void)
+{
+
+    return 0;
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  je_cv_cflags_added=-Wundef
+              { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+printf "%s\n" "yes" >&6; }
+else $as_nop
+  je_cv_cflags_added=
+              { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
+              CONFIGURE_CFLAGS="${T_CONFIGURE_CFLAGS}"
+
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+if test "x${CONFIGURE_CFLAGS}" = "x" -o "x${SPECIFIED_CFLAGS}" = "x" ; then
+  CFLAGS="${CONFIGURE_CFLAGS}${SPECIFIED_CFLAGS}"
+else
+  CFLAGS="${CONFIGURE_CFLAGS} ${SPECIFIED_CFLAGS}"
+fi
+
+
+
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether compiler supports -Wno-format-zero-length" >&5
+printf %s "checking whether compiler supports -Wno-format-zero-length... " >&6; }
+T_CONFIGURE_CFLAGS="${CONFIGURE_CFLAGS}"
+T_APPEND_V=-Wno-format-zero-length
+  if test "x${CONFIGURE_CFLAGS}" = "x" -o "x${T_APPEND_V}" = "x" ; then
+  CONFIGURE_CFLAGS="${CONFIGURE_CFLAGS}${T_APPEND_V}"
+else
+  CONFIGURE_CFLAGS="${CONFIGURE_CFLAGS} ${T_APPEND_V}"
+fi
+
+
+if test "x${CONFIGURE_CFLAGS}" = "x" -o "x${SPECIFIED_CFLAGS}" = "x" ; then
+  CFLAGS="${CONFIGURE_CFLAGS}${SPECIFIED_CFLAGS}"
+else
+  CFLAGS="${CONFIGURE_CFLAGS} ${SPECIFIED_CFLAGS}"
+fi
+
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+
+int
+main (void)
+{
+
+    return 0;
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  je_cv_cflags_added=-Wno-format-zero-length
+              { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+printf "%s\n" "yes" >&6; }
+else $as_nop
+  je_cv_cflags_added=
+              { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
+              CONFIGURE_CFLAGS="${T_CONFIGURE_CFLAGS}"
+
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+if test "x${CONFIGURE_CFLAGS}" = "x" -o "x${SPECIFIED_CFLAGS}" = "x" ; then
+  CFLAGS="${CONFIGURE_CFLAGS}${SPECIFIED_CFLAGS}"
+else
+  CFLAGS="${CONFIGURE_CFLAGS} ${SPECIFIED_CFLAGS}"
+fi
+
+
+
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether compiler supports -Wpointer-arith" >&5
+printf %s "checking whether compiler supports -Wpointer-arith... " >&6; }
+T_CONFIGURE_CFLAGS="${CONFIGURE_CFLAGS}"
+T_APPEND_V=-Wpointer-arith
+  if test "x${CONFIGURE_CFLAGS}" = "x" -o "x${T_APPEND_V}" = "x" ; then
+  CONFIGURE_CFLAGS="${CONFIGURE_CFLAGS}${T_APPEND_V}"
+else
+  CONFIGURE_CFLAGS="${CONFIGURE_CFLAGS} ${T_APPEND_V}"
+fi
+
+
+if test "x${CONFIGURE_CFLAGS}" = "x" -o "x${SPECIFIED_CFLAGS}" = "x" ; then
+  CFLAGS="${CONFIGURE_CFLAGS}${SPECIFIED_CFLAGS}"
+else
+  CFLAGS="${CONFIGURE_CFLAGS} ${SPECIFIED_CFLAGS}"
+fi
+
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+
+int
+main (void)
+{
+
+    return 0;
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  je_cv_cflags_added=-Wpointer-arith
+              { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+printf "%s\n" "yes" >&6; }
+else $as_nop
+  je_cv_cflags_added=
+              { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
+              CONFIGURE_CFLAGS="${T_CONFIGURE_CFLAGS}"
+
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+if test "x${CONFIGURE_CFLAGS}" = "x" -o "x${SPECIFIED_CFLAGS}" = "x" ; then
+  CFLAGS="${CONFIGURE_CFLAGS}${SPECIFIED_CFLAGS}"
+else
+  CFLAGS="${CONFIGURE_CFLAGS} ${SPECIFIED_CFLAGS}"
+fi
+
+
+
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether compiler supports -Wno-missing-braces" >&5
+printf %s "checking whether compiler supports -Wno-missing-braces... " >&6; }
+T_CONFIGURE_CFLAGS="${CONFIGURE_CFLAGS}"
+T_APPEND_V=-Wno-missing-braces
+  if test "x${CONFIGURE_CFLAGS}" = "x" -o "x${T_APPEND_V}" = "x" ; then
+  CONFIGURE_CFLAGS="${CONFIGURE_CFLAGS}${T_APPEND_V}"
+else
+  CONFIGURE_CFLAGS="${CONFIGURE_CFLAGS} ${T_APPEND_V}"
+fi
+
+
+if test "x${CONFIGURE_CFLAGS}" = "x" -o "x${SPECIFIED_CFLAGS}" = "x" ; then
+  CFLAGS="${CONFIGURE_CFLAGS}${SPECIFIED_CFLAGS}"
+else
+  CFLAGS="${CONFIGURE_CFLAGS} ${SPECIFIED_CFLAGS}"
+fi
+
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+
+int
+main (void)
+{
+
+    return 0;
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  je_cv_cflags_added=-Wno-missing-braces
+              { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+printf "%s\n" "yes" >&6; }
+else $as_nop
+  je_cv_cflags_added=
+              { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
+              CONFIGURE_CFLAGS="${T_CONFIGURE_CFLAGS}"
+
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+if test "x${CONFIGURE_CFLAGS}" = "x" -o "x${SPECIFIED_CFLAGS}" = "x" ; then
+  CFLAGS="${CONFIGURE_CFLAGS}${SPECIFIED_CFLAGS}"
+else
+  CFLAGS="${CONFIGURE_CFLAGS} ${SPECIFIED_CFLAGS}"
+fi
+
+
+
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether compiler supports -Wno-missing-field-initializers" >&5
+printf %s "checking whether compiler supports -Wno-missing-field-initializers... " >&6; }
+T_CONFIGURE_CFLAGS="${CONFIGURE_CFLAGS}"
+T_APPEND_V=-Wno-missing-field-initializers
+  if test "x${CONFIGURE_CFLAGS}" = "x" -o "x${T_APPEND_V}" = "x" ; then
+  CONFIGURE_CFLAGS="${CONFIGURE_CFLAGS}${T_APPEND_V}"
+else
+  CONFIGURE_CFLAGS="${CONFIGURE_CFLAGS} ${T_APPEND_V}"
+fi
+
+
+if test "x${CONFIGURE_CFLAGS}" = "x" -o "x${SPECIFIED_CFLAGS}" = "x" ; then
+  CFLAGS="${CONFIGURE_CFLAGS}${SPECIFIED_CFLAGS}"
+else
+  CFLAGS="${CONFIGURE_CFLAGS} ${SPECIFIED_CFLAGS}"
+fi
+
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+
+int
+main (void)
+{
+
+    return 0;
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  je_cv_cflags_added=-Wno-missing-field-initializers
+              { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+printf "%s\n" "yes" >&6; }
+else $as_nop
+  je_cv_cflags_added=
+              { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
+              CONFIGURE_CFLAGS="${T_CONFIGURE_CFLAGS}"
+
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+if test "x${CONFIGURE_CFLAGS}" = "x" -o "x${SPECIFIED_CFLAGS}" = "x" ; then
+  CFLAGS="${CONFIGURE_CFLAGS}${SPECIFIED_CFLAGS}"
+else
+  CFLAGS="${CONFIGURE_CFLAGS} ${SPECIFIED_CFLAGS}"
+fi
+
+
+
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether compiler supports -Wno-missing-attributes" >&5
+printf %s "checking whether compiler supports -Wno-missing-attributes... " >&6; }
+T_CONFIGURE_CFLAGS="${CONFIGURE_CFLAGS}"
+T_APPEND_V=-Wno-missing-attributes
+  if test "x${CONFIGURE_CFLAGS}" = "x" -o "x${T_APPEND_V}" = "x" ; then
+  CONFIGURE_CFLAGS="${CONFIGURE_CFLAGS}${T_APPEND_V}"
+else
+  CONFIGURE_CFLAGS="${CONFIGURE_CFLAGS} ${T_APPEND_V}"
+fi
+
+
+if test "x${CONFIGURE_CFLAGS}" = "x" -o "x${SPECIFIED_CFLAGS}" = "x" ; then
+  CFLAGS="${CONFIGURE_CFLAGS}${SPECIFIED_CFLAGS}"
+else
+  CFLAGS="${CONFIGURE_CFLAGS} ${SPECIFIED_CFLAGS}"
+fi
+
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+
+int
+main (void)
+{
+
+    return 0;
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  je_cv_cflags_added=-Wno-missing-attributes
+              { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+printf "%s\n" "yes" >&6; }
+else $as_nop
+  je_cv_cflags_added=
+              { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
+              CONFIGURE_CFLAGS="${T_CONFIGURE_CFLAGS}"
+
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+if test "x${CONFIGURE_CFLAGS}" = "x" -o "x${SPECIFIED_CFLAGS}" = "x" ; then
+  CFLAGS="${CONFIGURE_CFLAGS}${SPECIFIED_CFLAGS}"
+else
+  CFLAGS="${CONFIGURE_CFLAGS} ${SPECIFIED_CFLAGS}"
+fi
+
+
+
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether compiler supports -pipe" >&5
+printf %s "checking whether compiler supports -pipe... " >&6; }
+T_CONFIGURE_CFLAGS="${CONFIGURE_CFLAGS}"
+T_APPEND_V=-pipe
+  if test "x${CONFIGURE_CFLAGS}" = "x" -o "x${T_APPEND_V}" = "x" ; then
+  CONFIGURE_CFLAGS="${CONFIGURE_CFLAGS}${T_APPEND_V}"
+else
+  CONFIGURE_CFLAGS="${CONFIGURE_CFLAGS} ${T_APPEND_V}"
+fi
+
+
+if test "x${CONFIGURE_CFLAGS}" = "x" -o "x${SPECIFIED_CFLAGS}" = "x" ; then
+  CFLAGS="${CONFIGURE_CFLAGS}${SPECIFIED_CFLAGS}"
+else
+  CFLAGS="${CONFIGURE_CFLAGS} ${SPECIFIED_CFLAGS}"
+fi
+
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+
+int
+main (void)
+{
+
+    return 0;
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  je_cv_cflags_added=-pipe
+              { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+printf "%s\n" "yes" >&6; }
+else $as_nop
+  je_cv_cflags_added=
+              { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
+              CONFIGURE_CFLAGS="${T_CONFIGURE_CFLAGS}"
+
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+if test "x${CONFIGURE_CFLAGS}" = "x" -o "x${SPECIFIED_CFLAGS}" = "x" ; then
+  CFLAGS="${CONFIGURE_CFLAGS}${SPECIFIED_CFLAGS}"
+else
+  CFLAGS="${CONFIGURE_CFLAGS} ${SPECIFIED_CFLAGS}"
+fi
+
+
+
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether compiler supports -g3" >&5
+printf %s "checking whether compiler supports -g3... " >&6; }
+T_CONFIGURE_CFLAGS="${CONFIGURE_CFLAGS}"
+T_APPEND_V=-g3
+  if test "x${CONFIGURE_CFLAGS}" = "x" -o "x${T_APPEND_V}" = "x" ; then
+  CONFIGURE_CFLAGS="${CONFIGURE_CFLAGS}${T_APPEND_V}"
+else
+  CONFIGURE_CFLAGS="${CONFIGURE_CFLAGS} ${T_APPEND_V}"
+fi
+
+
+if test "x${CONFIGURE_CFLAGS}" = "x" -o "x${SPECIFIED_CFLAGS}" = "x" ; then
+  CFLAGS="${CONFIGURE_CFLAGS}${SPECIFIED_CFLAGS}"
+else
+  CFLAGS="${CONFIGURE_CFLAGS} ${SPECIFIED_CFLAGS}"
+fi
+
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+
+int
+main (void)
+{
+
+    return 0;
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  je_cv_cflags_added=-g3
+              { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+printf "%s\n" "yes" >&6; }
+else $as_nop
+  je_cv_cflags_added=
+              { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
+              CONFIGURE_CFLAGS="${T_CONFIGURE_CFLAGS}"
+
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+if test "x${CONFIGURE_CFLAGS}" = "x" -o "x${SPECIFIED_CFLAGS}" = "x" ; then
+  CFLAGS="${CONFIGURE_CFLAGS}${SPECIFIED_CFLAGS}"
+else
+  CFLAGS="${CONFIGURE_CFLAGS} ${SPECIFIED_CFLAGS}"
+fi
+
+
+elif test "x$je_cv_msvc" = "xyes" ; then
+  CC="$CC -nologo"
+
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether compiler supports -Zi" >&5
+printf %s "checking whether compiler supports -Zi... " >&6; }
+T_CONFIGURE_CFLAGS="${CONFIGURE_CFLAGS}"
+T_APPEND_V=-Zi
+  if test "x${CONFIGURE_CFLAGS}" = "x" -o "x${T_APPEND_V}" = "x" ; then
+  CONFIGURE_CFLAGS="${CONFIGURE_CFLAGS}${T_APPEND_V}"
+else
+  CONFIGURE_CFLAGS="${CONFIGURE_CFLAGS} ${T_APPEND_V}"
+fi
+
+
+if test "x${CONFIGURE_CFLAGS}" = "x" -o "x${SPECIFIED_CFLAGS}" = "x" ; then
+  CFLAGS="${CONFIGURE_CFLAGS}${SPECIFIED_CFLAGS}"
+else
+  CFLAGS="${CONFIGURE_CFLAGS} ${SPECIFIED_CFLAGS}"
+fi
+
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+
+int
+main (void)
+{
+
+    return 0;
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  je_cv_cflags_added=-Zi
+              { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+printf "%s\n" "yes" >&6; }
+else $as_nop
+  je_cv_cflags_added=
+              { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
+              CONFIGURE_CFLAGS="${T_CONFIGURE_CFLAGS}"
+
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+if test "x${CONFIGURE_CFLAGS}" = "x" -o "x${SPECIFIED_CFLAGS}" = "x" ; then
+  CFLAGS="${CONFIGURE_CFLAGS}${SPECIFIED_CFLAGS}"
+else
+  CFLAGS="${CONFIGURE_CFLAGS} ${SPECIFIED_CFLAGS}"
+fi
+
+
+
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether compiler supports -MT" >&5
+printf %s "checking whether compiler supports -MT... " >&6; }
+T_CONFIGURE_CFLAGS="${CONFIGURE_CFLAGS}"
+T_APPEND_V=-MT
+  if test "x${CONFIGURE_CFLAGS}" = "x" -o "x${T_APPEND_V}" = "x" ; then
+  CONFIGURE_CFLAGS="${CONFIGURE_CFLAGS}${T_APPEND_V}"
+else
+  CONFIGURE_CFLAGS="${CONFIGURE_CFLAGS} ${T_APPEND_V}"
+fi
+
+
+if test "x${CONFIGURE_CFLAGS}" = "x" -o "x${SPECIFIED_CFLAGS}" = "x" ; then
+  CFLAGS="${CONFIGURE_CFLAGS}${SPECIFIED_CFLAGS}"
+else
+  CFLAGS="${CONFIGURE_CFLAGS} ${SPECIFIED_CFLAGS}"
+fi
+
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+
+int
+main (void)
+{
+
+    return 0;
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  je_cv_cflags_added=-MT
+              { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+printf "%s\n" "yes" >&6; }
+else $as_nop
+  je_cv_cflags_added=
+              { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
+              CONFIGURE_CFLAGS="${T_CONFIGURE_CFLAGS}"
+
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+if test "x${CONFIGURE_CFLAGS}" = "x" -o "x${SPECIFIED_CFLAGS}" = "x" ; then
+  CFLAGS="${CONFIGURE_CFLAGS}${SPECIFIED_CFLAGS}"
+else
+  CFLAGS="${CONFIGURE_CFLAGS} ${SPECIFIED_CFLAGS}"
+fi
+
+
+
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether compiler supports -W3" >&5
+printf %s "checking whether compiler supports -W3... " >&6; }
+T_CONFIGURE_CFLAGS="${CONFIGURE_CFLAGS}"
+T_APPEND_V=-W3
+  if test "x${CONFIGURE_CFLAGS}" = "x" -o "x${T_APPEND_V}" = "x" ; then
+  CONFIGURE_CFLAGS="${CONFIGURE_CFLAGS}${T_APPEND_V}"
+else
+  CONFIGURE_CFLAGS="${CONFIGURE_CFLAGS} ${T_APPEND_V}"
+fi
+
+
+if test "x${CONFIGURE_CFLAGS}" = "x" -o "x${SPECIFIED_CFLAGS}" = "x" ; then
+  CFLAGS="${CONFIGURE_CFLAGS}${SPECIFIED_CFLAGS}"
+else
+  CFLAGS="${CONFIGURE_CFLAGS} ${SPECIFIED_CFLAGS}"
+fi
+
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+
+int
+main (void)
+{
+
+    return 0;
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  je_cv_cflags_added=-W3
+              { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+printf "%s\n" "yes" >&6; }
+else $as_nop
+  je_cv_cflags_added=
+              { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
+              CONFIGURE_CFLAGS="${T_CONFIGURE_CFLAGS}"
+
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+if test "x${CONFIGURE_CFLAGS}" = "x" -o "x${SPECIFIED_CFLAGS}" = "x" ; then
+  CFLAGS="${CONFIGURE_CFLAGS}${SPECIFIED_CFLAGS}"
+else
+  CFLAGS="${CONFIGURE_CFLAGS} ${SPECIFIED_CFLAGS}"
+fi
+
+
+
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether compiler supports -FS" >&5
+printf %s "checking whether compiler supports -FS... " >&6; }
+T_CONFIGURE_CFLAGS="${CONFIGURE_CFLAGS}"
+T_APPEND_V=-FS
+  if test "x${CONFIGURE_CFLAGS}" = "x" -o "x${T_APPEND_V}" = "x" ; then
+  CONFIGURE_CFLAGS="${CONFIGURE_CFLAGS}${T_APPEND_V}"
+else
+  CONFIGURE_CFLAGS="${CONFIGURE_CFLAGS} ${T_APPEND_V}"
+fi
+
+
+if test "x${CONFIGURE_CFLAGS}" = "x" -o "x${SPECIFIED_CFLAGS}" = "x" ; then
+  CFLAGS="${CONFIGURE_CFLAGS}${SPECIFIED_CFLAGS}"
+else
+  CFLAGS="${CONFIGURE_CFLAGS} ${SPECIFIED_CFLAGS}"
+fi
+
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+
+int
+main (void)
+{
+
+    return 0;
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  je_cv_cflags_added=-FS
+              { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+printf "%s\n" "yes" >&6; }
+else $as_nop
+  je_cv_cflags_added=
+              { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
+              CONFIGURE_CFLAGS="${T_CONFIGURE_CFLAGS}"
+
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+if test "x${CONFIGURE_CFLAGS}" = "x" -o "x${SPECIFIED_CFLAGS}" = "x" ; then
+  CFLAGS="${CONFIGURE_CFLAGS}${SPECIFIED_CFLAGS}"
+else
+  CFLAGS="${CONFIGURE_CFLAGS} ${SPECIFIED_CFLAGS}"
+fi
+
+
+  T_APPEND_V=-I${srcdir}/include/msvc_compat
+  if test "x${CPPFLAGS}" = "x" -o "x${T_APPEND_V}" = "x" ; then
+  CPPFLAGS="${CPPFLAGS}${T_APPEND_V}"
+else
+  CPPFLAGS="${CPPFLAGS} ${T_APPEND_V}"
+fi
+
+
+fi
+if test "x$je_cv_cray" = "xyes" ; then
+    if test "x$je_cv_cray_84" = "xyes" ; then
+
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether compiler supports -hipa2" >&5
+printf %s "checking whether compiler supports -hipa2... " >&6; }
+T_CONFIGURE_CFLAGS="${CONFIGURE_CFLAGS}"
+T_APPEND_V=-hipa2
+  if test "x${CONFIGURE_CFLAGS}" = "x" -o "x${T_APPEND_V}" = "x" ; then
+  CONFIGURE_CFLAGS="${CONFIGURE_CFLAGS}${T_APPEND_V}"
+else
+  CONFIGURE_CFLAGS="${CONFIGURE_CFLAGS} ${T_APPEND_V}"
+fi
+
+
+if test "x${CONFIGURE_CFLAGS}" = "x" -o "x${SPECIFIED_CFLAGS}" = "x" ; then
+  CFLAGS="${CONFIGURE_CFLAGS}${SPECIFIED_CFLAGS}"
+else
+  CFLAGS="${CONFIGURE_CFLAGS} ${SPECIFIED_CFLAGS}"
+fi
+
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+
+int
+main (void)
+{
+
+    return 0;
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  je_cv_cflags_added=-hipa2
+              { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+printf "%s\n" "yes" >&6; }
+else $as_nop
+  je_cv_cflags_added=
+              { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
+              CONFIGURE_CFLAGS="${T_CONFIGURE_CFLAGS}"
+
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+if test "x${CONFIGURE_CFLAGS}" = "x" -o "x${SPECIFIED_CFLAGS}" = "x" ; then
+  CFLAGS="${CONFIGURE_CFLAGS}${SPECIFIED_CFLAGS}"
+else
+  CFLAGS="${CONFIGURE_CFLAGS} ${SPECIFIED_CFLAGS}"
+fi
+
+
+
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether compiler supports -hnognu" >&5
+printf %s "checking whether compiler supports -hnognu... " >&6; }
+T_CONFIGURE_CFLAGS="${CONFIGURE_CFLAGS}"
+T_APPEND_V=-hnognu
+  if test "x${CONFIGURE_CFLAGS}" = "x" -o "x${T_APPEND_V}" = "x" ; then
+  CONFIGURE_CFLAGS="${CONFIGURE_CFLAGS}${T_APPEND_V}"
+else
+  CONFIGURE_CFLAGS="${CONFIGURE_CFLAGS} ${T_APPEND_V}"
+fi
+
+
+if test "x${CONFIGURE_CFLAGS}" = "x" -o "x${SPECIFIED_CFLAGS}" = "x" ; then
+  CFLAGS="${CONFIGURE_CFLAGS}${SPECIFIED_CFLAGS}"
+else
+  CFLAGS="${CONFIGURE_CFLAGS} ${SPECIFIED_CFLAGS}"
+fi
+
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+
+int
+main (void)
+{
+
+    return 0;
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  je_cv_cflags_added=-hnognu
+              { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+printf "%s\n" "yes" >&6; }
+else $as_nop
+  je_cv_cflags_added=
+              { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
+              CONFIGURE_CFLAGS="${T_CONFIGURE_CFLAGS}"
+
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+if test "x${CONFIGURE_CFLAGS}" = "x" -o "x${SPECIFIED_CFLAGS}" = "x" ; then
+  CFLAGS="${CONFIGURE_CFLAGS}${SPECIFIED_CFLAGS}"
+else
+  CFLAGS="${CONFIGURE_CFLAGS} ${SPECIFIED_CFLAGS}"
+fi
+
+
+  fi
+
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether compiler supports -hnomessage=128" >&5
+printf %s "checking whether compiler supports -hnomessage=128... " >&6; }
+T_CONFIGURE_CFLAGS="${CONFIGURE_CFLAGS}"
+T_APPEND_V=-hnomessage=128
+  if test "x${CONFIGURE_CFLAGS}" = "x" -o "x${T_APPEND_V}" = "x" ; then
+  CONFIGURE_CFLAGS="${CONFIGURE_CFLAGS}${T_APPEND_V}"
+else
+  CONFIGURE_CFLAGS="${CONFIGURE_CFLAGS} ${T_APPEND_V}"
+fi
+
+
+if test "x${CONFIGURE_CFLAGS}" = "x" -o "x${SPECIFIED_CFLAGS}" = "x" ; then
+  CFLAGS="${CONFIGURE_CFLAGS}${SPECIFIED_CFLAGS}"
+else
+  CFLAGS="${CONFIGURE_CFLAGS} ${SPECIFIED_CFLAGS}"
+fi
+
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+
+int
+main (void)
+{
+
+    return 0;
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  je_cv_cflags_added=-hnomessage=128
+              { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+printf "%s\n" "yes" >&6; }
+else $as_nop
+  je_cv_cflags_added=
+              { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
+              CONFIGURE_CFLAGS="${T_CONFIGURE_CFLAGS}"
+
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+if test "x${CONFIGURE_CFLAGS}" = "x" -o "x${SPECIFIED_CFLAGS}" = "x" ; then
+  CFLAGS="${CONFIGURE_CFLAGS}${SPECIFIED_CFLAGS}"
+else
+  CFLAGS="${CONFIGURE_CFLAGS} ${SPECIFIED_CFLAGS}"
+fi
+
+
+
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether compiler supports -hnomessage=1357" >&5
+printf %s "checking whether compiler supports -hnomessage=1357... " >&6; }
+T_CONFIGURE_CFLAGS="${CONFIGURE_CFLAGS}"
+T_APPEND_V=-hnomessage=1357
+  if test "x${CONFIGURE_CFLAGS}" = "x" -o "x${T_APPEND_V}" = "x" ; then
+  CONFIGURE_CFLAGS="${CONFIGURE_CFLAGS}${T_APPEND_V}"
+else
+  CONFIGURE_CFLAGS="${CONFIGURE_CFLAGS} ${T_APPEND_V}"
+fi
+
+
+if test "x${CONFIGURE_CFLAGS}" = "x" -o "x${SPECIFIED_CFLAGS}" = "x" ; then
+  CFLAGS="${CONFIGURE_CFLAGS}${SPECIFIED_CFLAGS}"
+else
+  CFLAGS="${CONFIGURE_CFLAGS} ${SPECIFIED_CFLAGS}"
+fi
+
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+
+int
+main (void)
+{
+
+    return 0;
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  je_cv_cflags_added=-hnomessage=1357
+              { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+printf "%s\n" "yes" >&6; }
+else $as_nop
+  je_cv_cflags_added=
+              { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
+              CONFIGURE_CFLAGS="${T_CONFIGURE_CFLAGS}"
+
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+if test "x${CONFIGURE_CFLAGS}" = "x" -o "x${SPECIFIED_CFLAGS}" = "x" ; then
+  CFLAGS="${CONFIGURE_CFLAGS}${SPECIFIED_CFLAGS}"
+else
+  CFLAGS="${CONFIGURE_CFLAGS} ${SPECIFIED_CFLAGS}"
+fi
+
+
+fi
+
+
+
+ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking how to run the C preprocessor" >&5
+printf %s "checking how to run the C preprocessor... " >&6; }
+# On Suns, sometimes $CPP names a directory.
+if test -n "$CPP" && test -d "$CPP"; then
+  CPP=
+fi
+if test -z "$CPP"; then
+  if test ${ac_cv_prog_CPP+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+      # Double quotes because $CC needs to be expanded
+    for CPP in "$CC -E" "$CC -E -traditional-cpp" cpp /lib/cpp
+    do
+      ac_preproc_ok=false
+for ac_c_preproc_warn_flag in '' yes
+do
+  # Use a header file that comes with gcc, so configuring glibc
+  # with a fresh cross-compiler works.
+  # On the NeXT, cc -E runs the code through the compiler's parser,
+  # not just through cpp. "Syntax error" is here to catch this case.
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <limits.h>
+		     Syntax error
+_ACEOF
+if ac_fn_c_try_cpp "$LINENO"
+then :
+
+else $as_nop
+  # Broken: fails on valid input.
+continue
+fi
+rm -f conftest.err conftest.i conftest.$ac_ext
+
+  # OK, works on sane cases.  Now check whether nonexistent headers
+  # can be detected and how.
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <ac_nonexistent.h>
+_ACEOF
+if ac_fn_c_try_cpp "$LINENO"
+then :
+  # Broken: success on invalid input.
+continue
+else $as_nop
+  # Passes both tests.
+ac_preproc_ok=:
+break
+fi
+rm -f conftest.err conftest.i conftest.$ac_ext
+
+done
+# Because of `break', _AC_PREPROC_IFELSE's cleaning code was skipped.
+rm -f conftest.i conftest.err conftest.$ac_ext
+if $ac_preproc_ok
+then :
+  break
+fi
+
+    done
+    ac_cv_prog_CPP=$CPP
+
+fi
+  CPP=$ac_cv_prog_CPP
+else
+  ac_cv_prog_CPP=$CPP
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $CPP" >&5
+printf "%s\n" "$CPP" >&6; }
+ac_preproc_ok=false
+for ac_c_preproc_warn_flag in '' yes
+do
+  # Use a header file that comes with gcc, so configuring glibc
+  # with a fresh cross-compiler works.
+  # On the NeXT, cc -E runs the code through the compiler's parser,
+  # not just through cpp. "Syntax error" is here to catch this case.
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <limits.h>
+		     Syntax error
+_ACEOF
+if ac_fn_c_try_cpp "$LINENO"
+then :
+
+else $as_nop
+  # Broken: fails on valid input.
+continue
+fi
+rm -f conftest.err conftest.i conftest.$ac_ext
+
+  # OK, works on sane cases.  Now check whether nonexistent headers
+  # can be detected and how.
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <ac_nonexistent.h>
+_ACEOF
+if ac_fn_c_try_cpp "$LINENO"
+then :
+  # Broken: success on invalid input.
+continue
+else $as_nop
+  # Passes both tests.
+ac_preproc_ok=:
+break
+fi
+rm -f conftest.err conftest.i conftest.$ac_ext
+
+done
+# Because of `break', _AC_PREPROC_IFELSE's cleaning code was skipped.
+rm -f conftest.i conftest.err conftest.$ac_ext
+if $ac_preproc_ok
+then :
+
+else $as_nop
+  { { printf "%s\n" "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
+printf "%s\n" "$as_me: error: in \`$ac_pwd':" >&2;}
+as_fn_error $? "C preprocessor \"$CPP\" fails sanity check
+See \`config.log' for more details" "$LINENO" 5; }
+fi
+
+ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+
+# Check whether --enable-cxx was given.
+if test ${enable_cxx+y}
+then :
+  enableval=$enable_cxx; if test "x$enable_cxx" = "xno" ; then
+  enable_cxx="0"
+else
+  enable_cxx="1"
+fi
+
+else $as_nop
+  enable_cxx="1"
+
+fi
+
+if test "x$enable_cxx" = "x1" ; then
+      # ===========================================================================
+#  https://www.gnu.org/software/autoconf-archive/ax_cxx_compile_stdcxx.html
+# ===========================================================================
+#
+# SYNOPSIS
+#
+#   AX_CXX_COMPILE_STDCXX(VERSION, [ext|noext], [mandatory|optional])
+#
+# DESCRIPTION
+#
+#   Check for baseline language coverage in the compiler for the specified
+#   version of the C++ standard.  If necessary, add switches to CXX and
+#   CXXCPP to enable support.  VERSION may be '11' (for the C++11 standard)
+#   or '14' (for the C++14 standard).
+#
+#   The second argument, if specified, indicates whether you insist on an
+#   extended mode (e.g. -std=gnu++11) or a strict conformance mode (e.g.
+#   -std=c++11).  If neither is specified, you get whatever works, with
+#   preference for an extended mode.
+#
+#   The third argument, if specified 'mandatory' or if left unspecified,
+#   indicates that baseline support for the specified C++ standard is
+#   required and that the macro should error out if no mode with that
+#   support is found.  If specified 'optional', then configuration proceeds
+#   regardless, after defining HAVE_CXX${VERSION} if and only if a
+#   supporting mode is found.
+#
+# LICENSE
+#
+#   Copyright (c) 2008 Benjamin Kosnik <bkoz@redhat.com>
+#   Copyright (c) 2012 Zack Weinberg <zackw@panix.com>
+#   Copyright (c) 2013 Roy Stogner <roystgnr@ices.utexas.edu>
+#   Copyright (c) 2014, 2015 Google Inc.; contributed by Alexey Sokolov <sokolov@google.com>
+#   Copyright (c) 2015 Paul Norman <penorman@mac.com>
+#   Copyright (c) 2015 Moritz Klammler <moritz@klammler.eu>
+#   Copyright (c) 2016, 2018 Krzesimir Nowak <qdlacz@gmail.com>
+#   Copyright (c) 2019 Enji Cooper <yaneurabeya@gmail.com>
+#
+#   Copying and distribution of this file, with or without modification, are
+#   permitted in any medium without royalty provided the copyright notice
+#   and this notice are preserved.  This file is offered as-is, without any
+#   warranty.
+
+#serial 11
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+ac_ext=cpp
+ac_cpp='$CXXCPP $CPPFLAGS'
+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
+if test -z "$CXX"; then
+  if test -n "$CCC"; then
+    CXX=$CCC
+  else
+    if test -n "$ac_tool_prefix"; then
+  for ac_prog in g++ c++ gpp aCC CC cxx cc++ cl.exe FCC KCC RCC xlC_r xlC clang++
+  do
+    # Extract the first word of "$ac_tool_prefix$ac_prog", so it can be a program name with args.
+set dummy $ac_tool_prefix$ac_prog; ac_word=$2
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+printf %s "checking for $ac_word... " >&6; }
+if test ${ac_cv_prog_CXX+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  if test -n "$CXX"; then
+  ac_cv_prog_CXX="$CXX" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  case $as_dir in #(((
+    '') as_dir=./ ;;
+    */) ;;
+    *) as_dir=$as_dir/ ;;
+  esac
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if as_fn_executable_p "$as_dir$ac_word$ac_exec_ext"; then
+    ac_cv_prog_CXX="$ac_tool_prefix$ac_prog"
+    printf "%s\n" "$as_me:${as_lineno-$LINENO}: found $as_dir$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+fi
+fi
+CXX=$ac_cv_prog_CXX
+if test -n "$CXX"; then
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $CXX" >&5
+printf "%s\n" "$CXX" >&6; }
+else
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
+fi
+
+
+    test -n "$CXX" && break
+  done
+fi
+if test -z "$CXX"; then
+  ac_ct_CXX=$CXX
+  for ac_prog in g++ c++ gpp aCC CC cxx cc++ cl.exe FCC KCC RCC xlC_r xlC clang++
+do
+  # Extract the first word of "$ac_prog", so it can be a program name with args.
+set dummy $ac_prog; ac_word=$2
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+printf %s "checking for $ac_word... " >&6; }
+if test ${ac_cv_prog_ac_ct_CXX+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  if test -n "$ac_ct_CXX"; then
+  ac_cv_prog_ac_ct_CXX="$ac_ct_CXX" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  case $as_dir in #(((
+    '') as_dir=./ ;;
+    */) ;;
+    *) as_dir=$as_dir/ ;;
+  esac
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if as_fn_executable_p "$as_dir$ac_word$ac_exec_ext"; then
+    ac_cv_prog_ac_ct_CXX="$ac_prog"
+    printf "%s\n" "$as_me:${as_lineno-$LINENO}: found $as_dir$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+fi
+fi
+ac_ct_CXX=$ac_cv_prog_ac_ct_CXX
+if test -n "$ac_ct_CXX"; then
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_ct_CXX" >&5
+printf "%s\n" "$ac_ct_CXX" >&6; }
+else
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
+fi
+
+
+  test -n "$ac_ct_CXX" && break
+done
+
+  if test "x$ac_ct_CXX" = x; then
+    CXX="g++"
+  else
+    case $cross_compiling:$ac_tool_warned in
+yes:)
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5
+printf "%s\n" "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;}
+ac_tool_warned=yes ;;
+esac
+    CXX=$ac_ct_CXX
+  fi
+fi
+
+  fi
+fi
+# Provide some information about the compiler.
+printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for C++ compiler version" >&5
+set X $ac_compile
+ac_compiler=$2
+for ac_option in --version -v -V -qversion; do
+  { { ac_try="$ac_compiler $ac_option >&5"
+case "(($ac_try" in
+  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
+  *) ac_try_echo=$ac_try;;
+esac
+eval ac_try_echo="\"\$as_me:${as_lineno-$LINENO}: $ac_try_echo\""
+printf "%s\n" "$ac_try_echo"; } >&5
+  (eval "$ac_compiler $ac_option >&5") 2>conftest.err
+  ac_status=$?
+  if test -s conftest.err; then
+    sed '10a\
+... rest of stderr output deleted ...
+         10q' conftest.err >conftest.er1
+    cat conftest.er1 >&5
+  fi
+  rm -f conftest.er1 conftest.err
+  printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; }
+done
+
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether the compiler supports GNU C++" >&5
+printf %s "checking whether the compiler supports GNU C++... " >&6; }
+if test ${ac_cv_cxx_compiler_gnu+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+int
+main (void)
+{
+#ifndef __GNUC__
+       choke me
+#endif
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_cxx_try_compile "$LINENO"
+then :
+  ac_compiler_gnu=yes
+else $as_nop
+  ac_compiler_gnu=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+ac_cv_cxx_compiler_gnu=$ac_compiler_gnu
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_cxx_compiler_gnu" >&5
+printf "%s\n" "$ac_cv_cxx_compiler_gnu" >&6; }
+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
+
+if test $ac_compiler_gnu = yes; then
+  GXX=yes
+else
+  GXX=
+fi
+ac_test_CXXFLAGS=${CXXFLAGS+y}
+ac_save_CXXFLAGS=$CXXFLAGS
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether $CXX accepts -g" >&5
+printf %s "checking whether $CXX accepts -g... " >&6; }
+if test ${ac_cv_prog_cxx_g+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  ac_save_cxx_werror_flag=$ac_cxx_werror_flag
+   ac_cxx_werror_flag=yes
+   ac_cv_prog_cxx_g=no
+   CXXFLAGS="-g"
+   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+int
+main (void)
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_cxx_try_compile "$LINENO"
+then :
+  ac_cv_prog_cxx_g=yes
+else $as_nop
+  CXXFLAGS=""
+      cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+int
+main (void)
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_cxx_try_compile "$LINENO"
+then :
+
+else $as_nop
+  ac_cxx_werror_flag=$ac_save_cxx_werror_flag
+	 CXXFLAGS="-g"
+	 cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+int
+main (void)
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_cxx_try_compile "$LINENO"
+then :
+  ac_cv_prog_cxx_g=yes
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+   ac_cxx_werror_flag=$ac_save_cxx_werror_flag
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_prog_cxx_g" >&5
+printf "%s\n" "$ac_cv_prog_cxx_g" >&6; }
+if test $ac_test_CXXFLAGS; then
+  CXXFLAGS=$ac_save_CXXFLAGS
+elif test $ac_cv_prog_cxx_g = yes; then
+  if test "$GXX" = yes; then
+    CXXFLAGS="-g -O2"
+  else
+    CXXFLAGS="-g"
+  fi
+else
+  if test "$GXX" = yes; then
+    CXXFLAGS="-O2"
+  else
+    CXXFLAGS=
+  fi
+fi
+ac_prog_cxx_stdcxx=no
+if test x$ac_prog_cxx_stdcxx = xno
+then :
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $CXX option to enable C++11 features" >&5
+printf %s "checking for $CXX option to enable C++11 features... " >&6; }
+if test ${ac_cv_prog_cxx_11+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  ac_cv_prog_cxx_11=no
+ac_save_CXX=$CXX
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+$ac_cxx_conftest_cxx11_program
+_ACEOF
+for ac_arg in '' -std=gnu++11 -std=gnu++0x -std=c++11 -std=c++0x -qlanglvl=extended0x -AA
+do
+  CXX="$ac_save_CXX $ac_arg"
+  if ac_fn_cxx_try_compile "$LINENO"
+then :
+  ac_cv_prog_cxx_cxx11=$ac_arg
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam
+  test "x$ac_cv_prog_cxx_cxx11" != "xno" && break
+done
+rm -f conftest.$ac_ext
+CXX=$ac_save_CXX
+fi
+
+if test "x$ac_cv_prog_cxx_cxx11" = xno
+then :
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: unsupported" >&5
+printf "%s\n" "unsupported" >&6; }
+else $as_nop
+  if test "x$ac_cv_prog_cxx_cxx11" = x
+then :
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: none needed" >&5
+printf "%s\n" "none needed" >&6; }
+else $as_nop
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_prog_cxx_cxx11" >&5
+printf "%s\n" "$ac_cv_prog_cxx_cxx11" >&6; }
+     CXX="$CXX $ac_cv_prog_cxx_cxx11"
+fi
+  ac_cv_prog_cxx_stdcxx=$ac_cv_prog_cxx_cxx11
+  ac_prog_cxx_stdcxx=cxx11
+fi
+fi
+if test x$ac_prog_cxx_stdcxx = xno
+then :
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $CXX option to enable C++98 features" >&5
+printf %s "checking for $CXX option to enable C++98 features... " >&6; }
+if test ${ac_cv_prog_cxx_98+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  ac_cv_prog_cxx_98=no
+ac_save_CXX=$CXX
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+$ac_cxx_conftest_cxx98_program
+_ACEOF
+for ac_arg in '' -std=gnu++98 -std=c++98 -qlanglvl=extended -AA
+do
+  CXX="$ac_save_CXX $ac_arg"
+  if ac_fn_cxx_try_compile "$LINENO"
+then :
+  ac_cv_prog_cxx_cxx98=$ac_arg
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam
+  test "x$ac_cv_prog_cxx_cxx98" != "xno" && break
+done
+rm -f conftest.$ac_ext
+CXX=$ac_save_CXX
+fi
+
+if test "x$ac_cv_prog_cxx_cxx98" = xno
+then :
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: unsupported" >&5
+printf "%s\n" "unsupported" >&6; }
+else $as_nop
+  if test "x$ac_cv_prog_cxx_cxx98" = x
+then :
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: none needed" >&5
+printf "%s\n" "none needed" >&6; }
+else $as_nop
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_prog_cxx_cxx98" >&5
+printf "%s\n" "$ac_cv_prog_cxx_cxx98" >&6; }
+     CXX="$CXX $ac_cv_prog_cxx_cxx98"
+fi
+  ac_cv_prog_cxx_stdcxx=$ac_cv_prog_cxx_cxx98
+  ac_prog_cxx_stdcxx=cxx98
+fi
+fi
+
+ac_ext=cpp
+ac_cpp='$CXXCPP $CPPFLAGS'
+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
+
+
+  ax_cxx_compile_alternatives="17 1z"    ax_cxx_compile_cxx17_required=false
+  ac_ext=cpp
+ac_cpp='$CXXCPP $CPPFLAGS'
+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
+  ac_success=no
+
+
+
+    if test x$ac_success = xno; then
+                for alternative in ${ax_cxx_compile_alternatives}; do
+      for switch in -std=c++${alternative} +std=c++${alternative} "-h std=c++${alternative}"; do
+        cachevar=`printf "%s\n" "ax_cv_cxx_compile_cxx17_$switch" | $as_tr_sh`
+        { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether $CXX supports C++17 features with $switch" >&5
+printf %s "checking whether $CXX supports C++17 features with $switch... " >&6; }
+if eval test \${$cachevar+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  ac_save_CXX="$CXX"
+           CXX="$CXX $switch"
+           cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+
+// If the compiler admits that it is not ready for C++11, why torture it?
+// Hopefully, this will speed up the test.
+
+#ifndef __cplusplus
+
+#error "This is not a C++ compiler"
+
+#elif __cplusplus < 201103L
+
+#error "This is not a C++11 compiler"
+
+#else
+
+namespace cxx11
+{
+
+  namespace test_static_assert
+  {
+
+    template <typename T>
+    struct check
+    {
+      static_assert(sizeof(int) <= sizeof(T), "not big enough");
+    };
+
+  }
+
+  namespace test_final_override
+  {
+
+    struct Base
+    {
+      virtual ~Base() {}
+      virtual void f() {}
+    };
+
+    struct Derived : public Base
+    {
+      virtual ~Derived() override {}
+      virtual void f() override {}
+    };
+
+  }
+
+  namespace test_double_right_angle_brackets
+  {
+
+    template < typename T >
+    struct check {};
+
+    typedef check<void> single_type;
+    typedef check<check<void>> double_type;
+    typedef check<check<check<void>>> triple_type;
+    typedef check<check<check<check<void>>>> quadruple_type;
+
+  }
+
+  namespace test_decltype
+  {
+
+    int
+    f()
+    {
+      int a = 1;
+      decltype(a) b = 2;
+      return a + b;
+    }
+
+  }
+
+  namespace test_type_deduction
+  {
+
+    template < typename T1, typename T2 >
+    struct is_same
+    {
+      static const bool value = false;
+    };
+
+    template < typename T >
+    struct is_same<T, T>
+    {
+      static const bool value = true;
+    };
+
+    template < typename T1, typename T2 >
+    auto
+    add(T1 a1, T2 a2) -> decltype(a1 + a2)
+    {
+      return a1 + a2;
+    }
+
+    int
+    test(const int c, volatile int v)
+    {
+      static_assert(is_same<int, decltype(0)>::value == true, "");
+      static_assert(is_same<int, decltype(c)>::value == false, "");
+      static_assert(is_same<int, decltype(v)>::value == false, "");
+      auto ac = c;
+      auto av = v;
+      auto sumi = ac + av + 'x';
+      auto sumf = ac + av + 1.0;
+      static_assert(is_same<int, decltype(ac)>::value == true, "");
+      static_assert(is_same<int, decltype(av)>::value == true, "");
+      static_assert(is_same<int, decltype(sumi)>::value == true, "");
+      static_assert(is_same<int, decltype(sumf)>::value == false, "");
+      static_assert(is_same<int, decltype(add(c, v))>::value == true, "");
+      return (sumf > 0.0) ? sumi : add(c, v);
+    }
+
+  }
+
+  namespace test_noexcept
+  {
+
+    int f() { return 0; }
+    int g() noexcept { return 0; }
+
+    static_assert(noexcept(f()) == false, "");
+    static_assert(noexcept(g()) == true, "");
+
+  }
+
+  namespace test_constexpr
+  {
+
+    template < typename CharT >
+    unsigned long constexpr
+    strlen_c_r(const CharT *const s, const unsigned long acc) noexcept
+    {
+      return *s ? strlen_c_r(s + 1, acc + 1) : acc;
+    }
+
+    template < typename CharT >
+    unsigned long constexpr
+    strlen_c(const CharT *const s) noexcept
+    {
+      return strlen_c_r(s, 0UL);
+    }
+
+    static_assert(strlen_c("") == 0UL, "");
+    static_assert(strlen_c("1") == 1UL, "");
+    static_assert(strlen_c("example") == 7UL, "");
+    static_assert(strlen_c("another\0example") == 7UL, "");
+
+  }
+
+  namespace test_rvalue_references
+  {
+
+    template < int N >
+    struct answer
+    {
+      static constexpr int value = N;
+    };
+
+    answer<1> f(int&)       { return answer<1>(); }
+    answer<2> f(const int&) { return answer<2>(); }
+    answer<3> f(int&&)      { return answer<3>(); }
+
+    void
+    test()
+    {
+      int i = 0;
+      const int c = 0;
+      static_assert(decltype(f(i))::value == 1, "");
+      static_assert(decltype(f(c))::value == 2, "");
+      static_assert(decltype(f(0))::value == 3, "");
+    }
+
+  }
+
+  namespace test_uniform_initialization
+  {
+
+    struct test
+    {
+      static const int zero {};
+      static const int one {1};
+    };
+
+    static_assert(test::zero == 0, "");
+    static_assert(test::one == 1, "");
+
+  }
+
+  namespace test_lambdas
+  {
+
+    void
+    test1()
+    {
+      auto lambda1 = [](){};
+      auto lambda2 = lambda1;
+      lambda1();
+      lambda2();
+    }
+
+    int
+    test2()
+    {
+      auto a = [](int i, int j){ return i + j; }(1, 2);
+      auto b = []() -> int { return '0'; }();
+      auto c = [=](){ return a + b; }();
+      auto d = [&](){ return c; }();
+      auto e = [a, &b](int x) mutable {
+        const auto identity = [](int y){ return y; };
+        for (auto i = 0; i < a; ++i)
+          a += b--;
+        return x + identity(a + b);
+      }(0);
+      return a + b + c + d + e;
+    }
+
+    int
+    test3()
+    {
+      const auto nullary = [](){ return 0; };
+      const auto unary = [](int x){ return x; };
+      using nullary_t = decltype(nullary);
+      using unary_t = decltype(unary);
+      const auto higher1st = [](nullary_t f){ return f(); };
+      const auto higher2nd = [unary](nullary_t f1){
+        return [unary, f1](unary_t f2){ return f2(unary(f1())); };
+      };
+      return higher1st(nullary) + higher2nd(nullary)(unary);
+    }
+
+  }
+
+  namespace test_variadic_templates
+  {
+
+    template <int...>
+    struct sum;
+
+    template <int N0, int... N1toN>
+    struct sum<N0, N1toN...>
+    {
+      static constexpr auto value = N0 + sum<N1toN...>::value;
+    };
+
+    template <>
+    struct sum<>
+    {
+      static constexpr auto value = 0;
+    };
+
+    static_assert(sum<>::value == 0, "");
+    static_assert(sum<1>::value == 1, "");
+    static_assert(sum<23>::value == 23, "");
+    static_assert(sum<1, 2>::value == 3, "");
+    static_assert(sum<5, 5, 11>::value == 21, "");
+    static_assert(sum<2, 3, 5, 7, 11, 13>::value == 41, "");
+
+  }
+
+  // http://stackoverflow.com/questions/13728184/template-aliases-and-sfinae
+  // Clang 3.1 fails with headers of libstd++ 4.8.3 when using std::function
+  // because of this.
+  namespace test_template_alias_sfinae
+  {
+
+    struct foo {};
+
+    template<typename T>
+    using member = typename T::member_type;
+
+    template<typename T>
+    void func(...) {}
+
+    template<typename T>
+    void func(member<T>*) {}
+
+    void test();
+
+    void test() { func<foo>(0); }
+
+  }
+
+}  // namespace cxx11
+
+#endif  // __cplusplus >= 201103L
+
+
+
+
+// If the compiler admits that it is not ready for C++14, why torture it?
+// Hopefully, this will speed up the test.
+
+#ifndef __cplusplus
+
+#error "This is not a C++ compiler"
+
+#elif __cplusplus < 201402L
+
+#error "This is not a C++14 compiler"
+
+#else
+
+namespace cxx14
+{
+
+  namespace test_polymorphic_lambdas
+  {
+
+    int
+    test()
+    {
+      const auto lambda = [](auto&&... args){
+        const auto istiny = [](auto x){
+          return (sizeof(x) == 1UL) ? 1 : 0;
+        };
+        const int aretiny[] = { istiny(args)... };
+        return aretiny[0];
+      };
+      return lambda(1, 1L, 1.0f, '1');
+    }
+
+  }
+
+  namespace test_binary_literals
+  {
+
+    constexpr auto ivii = 0b0000000000101010;
+    static_assert(ivii == 42, "wrong value");
+
+  }
+
+  namespace test_generalized_constexpr
+  {
+
+    template < typename CharT >
+    constexpr unsigned long
+    strlen_c(const CharT *const s) noexcept
+    {
+      auto length = 0UL;
+      for (auto p = s; *p; ++p)
+        ++length;
+      return length;
+    }
+
+    static_assert(strlen_c("") == 0UL, "");
+    static_assert(strlen_c("x") == 1UL, "");
+    static_assert(strlen_c("test") == 4UL, "");
+    static_assert(strlen_c("another\0test") == 7UL, "");
+
+  }
+
+  namespace test_lambda_init_capture
+  {
+
+    int
+    test()
+    {
+      auto x = 0;
+      const auto lambda1 = [a = x](int b){ return a + b; };
+      const auto lambda2 = [a = lambda1(x)](){ return a; };
+      return lambda2();
+    }
+
+  }
+
+  namespace test_digit_separators
+  {
+
+    constexpr auto ten_million = 100'000'000;
+    static_assert(ten_million == 100000000, "");
+
+  }
+
+  namespace test_return_type_deduction
+  {
+
+    auto f(int& x) { return x; }
+    decltype(auto) g(int& x) { return x; }
+
+    template < typename T1, typename T2 >
+    struct is_same
+    {
+      static constexpr auto value = false;
+    };
+
+    template < typename T >
+    struct is_same<T, T>
+    {
+      static constexpr auto value = true;
+    };
+
+    int
+    test()
+    {
+      auto x = 0;
+      static_assert(is_same<int, decltype(f(x))>::value, "");
+      static_assert(is_same<int&, decltype(g(x))>::value, "");
+      return x;
+    }
+
+  }
+
+}  // namespace cxx14
+
+#endif  // __cplusplus >= 201402L
+
+
+
+
+// If the compiler admits that it is not ready for C++17, why torture it?
+// Hopefully, this will speed up the test.
+
+#ifndef __cplusplus
+
+#error "This is not a C++ compiler"
+
+#elif __cplusplus < 201703L
+
+#error "This is not a C++17 compiler"
+
+#else
+
+#include <initializer_list>
+#include <utility>
+#include <type_traits>
+
+namespace cxx17
+{
+
+  namespace test_constexpr_lambdas
+  {
+
+    constexpr int foo = [](){return 42;}();
+
+  }
+
+  namespace test::nested_namespace::definitions
+  {
+
+  }
+
+  namespace test_fold_expression
+  {
+
+    template<typename... Args>
+    int multiply(Args... args)
+    {
+      return (args * ... * 1);
+    }
+
+    template<typename... Args>
+    bool all(Args... args)
+    {
+      return (args && ...);
+    }
+
+  }
+
+  namespace test_extended_static_assert
+  {
+
+    static_assert (true);
+
+  }
+
+  namespace test_auto_brace_init_list
+  {
+
+    auto foo = {5};
+    auto bar {5};
+
+    static_assert(std::is_same<std::initializer_list<int>, decltype(foo)>::value);
+    static_assert(std::is_same<int, decltype(bar)>::value);
+  }
+
+  namespace test_typename_in_template_template_parameter
+  {
+
+    template<template<typename> typename X> struct D;
+
+  }
+
+  namespace test_fallthrough_nodiscard_maybe_unused_attributes
+  {
+
+    int f1()
+    {
+      return 42;
+    }
+
+    [[nodiscard]] int f2()
+    {
+      [[maybe_unused]] auto unused = f1();
+
+      switch (f1())
+      {
+      case 17:
+        f1();
+        [[fallthrough]];
+      case 42:
+        f1();
+      }
+      return f1();
+    }
+
+  }
+
+  namespace test_extended_aggregate_initialization
+  {
+
+    struct base1
+    {
+      int b1, b2 = 42;
+    };
+
+    struct base2
+    {
+      base2() {
+        b3 = 42;
+      }
+      int b3;
+    };
+
+    struct derived : base1, base2
+    {
+        int d;
+    };
+
+    derived d1 {{1, 2}, {}, 4};  // full initialization
+    derived d2 {{}, {}, 4};      // value-initialized bases
+
+  }
+
+  namespace test_general_range_based_for_loop
+  {
+
+    struct iter
+    {
+      int i;
+
+      int& operator* ()
+      {
+        return i;
+      }
+
+      const int& operator* () const
+      {
+        return i;
+      }
+
+      iter& operator++()
+      {
+        ++i;
+        return *this;
+      }
+    };
+
+    struct sentinel
+    {
+      int i;
+    };
+
+    bool operator== (const iter& i, const sentinel& s)
+    {
+      return i.i == s.i;
+    }
+
+    bool operator!= (const iter& i, const sentinel& s)
+    {
+      return !(i == s);
+    }
+
+    struct range
+    {
+      iter begin() const
+      {
+        return {0};
+      }
+
+      sentinel end() const
+      {
+        return {5};
+      }
+    };
+
+    void f()
+    {
+      range r {};
+
+      for (auto i : r)
+      {
+        [[maybe_unused]] auto v = i;
+      }
+    }
+
+  }
+
+  namespace test_lambda_capture_asterisk_this_by_value
+  {
+
+    struct t
+    {
+      int i;
+      int foo()
+      {
+        return [*this]()
+        {
+          return i;
+        }();
+      }
+    };
+
+  }
+
+  namespace test_enum_class_construction
+  {
+
+    enum class byte : unsigned char
+    {};
+
+    byte foo {42};
+
+  }
+
+  namespace test_constexpr_if
+  {
+
+    template <bool cond>
+    int f ()
+    {
+      if constexpr(cond)
+      {
+        return 13;
+      }
+      else
+      {
+        return 42;
+      }
+    }
+
+  }
+
+  namespace test_selection_statement_with_initializer
+  {
+
+    int f()
+    {
+      return 13;
+    }
+
+    int f2()
+    {
+      if (auto i = f(); i > 0)
+      {
+        return 3;
+      }
+
+      switch (auto i = f(); i + 4)
+      {
+      case 17:
+        return 2;
+
+      default:
+        return 1;
+      }
+    }
+
+  }
+
+  namespace test_template_argument_deduction_for_class_templates
+  {
+
+    template <typename T1, typename T2>
+    struct pair
+    {
+      pair (T1 p1, T2 p2)
+        : m1 {p1},
+          m2 {p2}
+      {}
+
+      T1 m1;
+      T2 m2;
+    };
+
+    void f()
+    {
+      [[maybe_unused]] auto p = pair{13, 42u};
+    }
+
+  }
+
+  namespace test_non_type_auto_template_parameters
+  {
+
+    template <auto n>
+    struct B
+    {};
+
+    B<5> b1;
+    B<'a'> b2;
+
+  }
+
+  namespace test_structured_bindings
+  {
+
+    int arr[2] = { 1, 2 };
+    std::pair<int, int> pr = { 1, 2 };
+
+    auto f1() -> int(&)[2]
+    {
+      return arr;
+    }
+
+    auto f2() -> std::pair<int, int>&
+    {
+      return pr;
+    }
+
+    struct S
+    {
+      int x1 : 2;
+      volatile double y1;
+    };
+
+    S f3()
+    {
+      return {};
+    }
+
+    auto [ x1, y1 ] = f1();
+    auto& [ xr1, yr1 ] = f1();
+    auto [ x2, y2 ] = f2();
+    auto& [ xr2, yr2 ] = f2();
+    const auto [ x3, y3 ] = f3();
+
+  }
+
+  namespace test_exception_spec_type_system
+  {
+
+    struct Good {};
+    struct Bad {};
+
+    void g1() noexcept;
+    void g2();
+
+    template<typename T>
+    Bad
+    f(T*, T*);
+
+    template<typename T1, typename T2>
+    Good
+    f(T1*, T2*);
+
+    static_assert (std::is_same_v<Good, decltype(f(g1, g2))>);
+
+  }
+
+  namespace test_inline_variables
+  {
+
+    template<class T> void f(T)
+    {}
+
+    template<class T> inline T g(T)
+    {
+      return T{};
+    }
+
+    template<> inline void f<>(int)
+    {}
+
+    template<> int g<>(int)
+    {
+      return 5;
+    }
+
+  }
+
+}  // namespace cxx17
+
+#endif  // __cplusplus < 201703L
+
+
+
+_ACEOF
+if ac_fn_cxx_try_compile "$LINENO"
+then :
+  eval $cachevar=yes
+else $as_nop
+  eval $cachevar=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+           CXX="$ac_save_CXX"
+fi
+eval ac_res=\$$cachevar
+	       { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_res" >&5
+printf "%s\n" "$ac_res" >&6; }
+        if eval test x\$$cachevar = xyes; then
+          CXX="$CXX $switch"
+          if test -n "$CXXCPP" ; then
+            CXXCPP="$CXXCPP $switch"
+          fi
+          ac_success=yes
+          break
+        fi
+      done
+      if test x$ac_success = xyes; then
+        break
+      fi
+    done
+  fi
+  ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+  if test x$ax_cxx_compile_cxx17_required = xtrue; then
+    if test x$ac_success = xno; then
+      as_fn_error $? "*** A compiler with support for C++17 language features is required." "$LINENO" 5
+    fi
+  fi
+  if test x$ac_success = xno; then
+    HAVE_CXX17=0
+    { printf "%s\n" "$as_me:${as_lineno-$LINENO}: No compiler with C++17 support was found" >&5
+printf "%s\n" "$as_me: No compiler with C++17 support was found" >&6;}
+  else
+    HAVE_CXX17=1
+
+printf "%s\n" "#define HAVE_CXX17 1" >>confdefs.h
+
+  fi
+
+
+  if test "x${HAVE_CXX17}" != "x1"; then
+      ax_cxx_compile_alternatives="14 1y"    ax_cxx_compile_cxx14_required=false
+  ac_ext=cpp
+ac_cpp='$CXXCPP $CPPFLAGS'
+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
+  ac_success=no
+
+
+
+    if test x$ac_success = xno; then
+                for alternative in ${ax_cxx_compile_alternatives}; do
+      for switch in -std=c++${alternative} +std=c++${alternative} "-h std=c++${alternative}"; do
+        cachevar=`printf "%s\n" "ax_cv_cxx_compile_cxx14_$switch" | $as_tr_sh`
+        { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether $CXX supports C++14 features with $switch" >&5
+printf %s "checking whether $CXX supports C++14 features with $switch... " >&6; }
+if eval test \${$cachevar+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  ac_save_CXX="$CXX"
+           CXX="$CXX $switch"
+           cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+
+// If the compiler admits that it is not ready for C++11, why torture it?
+// Hopefully, this will speed up the test.
+
+#ifndef __cplusplus
+
+#error "This is not a C++ compiler"
+
+#elif __cplusplus < 201103L
+
+#error "This is not a C++11 compiler"
+
+#else
+
+namespace cxx11
+{
+
+  namespace test_static_assert
+  {
+
+    template <typename T>
+    struct check
+    {
+      static_assert(sizeof(int) <= sizeof(T), "not big enough");
+    };
+
+  }
+
+  namespace test_final_override
+  {
+
+    struct Base
+    {
+      virtual ~Base() {}
+      virtual void f() {}
+    };
+
+    struct Derived : public Base
+    {
+      virtual ~Derived() override {}
+      virtual void f() override {}
+    };
+
+  }
+
+  namespace test_double_right_angle_brackets
+  {
+
+    template < typename T >
+    struct check {};
+
+    typedef check<void> single_type;
+    typedef check<check<void>> double_type;
+    typedef check<check<check<void>>> triple_type;
+    typedef check<check<check<check<void>>>> quadruple_type;
+
+  }
+
+  namespace test_decltype
+  {
+
+    int
+    f()
+    {
+      int a = 1;
+      decltype(a) b = 2;
+      return a + b;
+    }
+
+  }
+
+  namespace test_type_deduction
+  {
+
+    template < typename T1, typename T2 >
+    struct is_same
+    {
+      static const bool value = false;
+    };
+
+    template < typename T >
+    struct is_same<T, T>
+    {
+      static const bool value = true;
+    };
+
+    template < typename T1, typename T2 >
+    auto
+    add(T1 a1, T2 a2) -> decltype(a1 + a2)
+    {
+      return a1 + a2;
+    }
+
+    int
+    test(const int c, volatile int v)
+    {
+      static_assert(is_same<int, decltype(0)>::value == true, "");
+      static_assert(is_same<int, decltype(c)>::value == false, "");
+      static_assert(is_same<int, decltype(v)>::value == false, "");
+      auto ac = c;
+      auto av = v;
+      auto sumi = ac + av + 'x';
+      auto sumf = ac + av + 1.0;
+      static_assert(is_same<int, decltype(ac)>::value == true, "");
+      static_assert(is_same<int, decltype(av)>::value == true, "");
+      static_assert(is_same<int, decltype(sumi)>::value == true, "");
+      static_assert(is_same<int, decltype(sumf)>::value == false, "");
+      static_assert(is_same<int, decltype(add(c, v))>::value == true, "");
+      return (sumf > 0.0) ? sumi : add(c, v);
+    }
+
+  }
+
+  namespace test_noexcept
+  {
+
+    int f() { return 0; }
+    int g() noexcept { return 0; }
+
+    static_assert(noexcept(f()) == false, "");
+    static_assert(noexcept(g()) == true, "");
+
+  }
+
+  namespace test_constexpr
+  {
+
+    template < typename CharT >
+    unsigned long constexpr
+    strlen_c_r(const CharT *const s, const unsigned long acc) noexcept
+    {
+      return *s ? strlen_c_r(s + 1, acc + 1) : acc;
+    }
+
+    template < typename CharT >
+    unsigned long constexpr
+    strlen_c(const CharT *const s) noexcept
+    {
+      return strlen_c_r(s, 0UL);
+    }
+
+    static_assert(strlen_c("") == 0UL, "");
+    static_assert(strlen_c("1") == 1UL, "");
+    static_assert(strlen_c("example") == 7UL, "");
+    static_assert(strlen_c("another\0example") == 7UL, "");
+
+  }
+
+  namespace test_rvalue_references
+  {
+
+    template < int N >
+    struct answer
+    {
+      static constexpr int value = N;
+    };
+
+    answer<1> f(int&)       { return answer<1>(); }
+    answer<2> f(const int&) { return answer<2>(); }
+    answer<3> f(int&&)      { return answer<3>(); }
+
+    void
+    test()
+    {
+      int i = 0;
+      const int c = 0;
+      static_assert(decltype(f(i))::value == 1, "");
+      static_assert(decltype(f(c))::value == 2, "");
+      static_assert(decltype(f(0))::value == 3, "");
+    }
+
+  }
+
+  namespace test_uniform_initialization
+  {
+
+    struct test
+    {
+      static const int zero {};
+      static const int one {1};
+    };
+
+    static_assert(test::zero == 0, "");
+    static_assert(test::one == 1, "");
+
+  }
+
+  namespace test_lambdas
+  {
+
+    void
+    test1()
+    {
+      auto lambda1 = [](){};
+      auto lambda2 = lambda1;
+      lambda1();
+      lambda2();
+    }
+
+    int
+    test2()
+    {
+      auto a = [](int i, int j){ return i + j; }(1, 2);
+      auto b = []() -> int { return '0'; }();
+      auto c = [=](){ return a + b; }();
+      auto d = [&](){ return c; }();
+      auto e = [a, &b](int x) mutable {
+        const auto identity = [](int y){ return y; };
+        for (auto i = 0; i < a; ++i)
+          a += b--;
+        return x + identity(a + b);
+      }(0);
+      return a + b + c + d + e;
+    }
+
+    int
+    test3()
+    {
+      const auto nullary = [](){ return 0; };
+      const auto unary = [](int x){ return x; };
+      using nullary_t = decltype(nullary);
+      using unary_t = decltype(unary);
+      const auto higher1st = [](nullary_t f){ return f(); };
+      const auto higher2nd = [unary](nullary_t f1){
+        return [unary, f1](unary_t f2){ return f2(unary(f1())); };
+      };
+      return higher1st(nullary) + higher2nd(nullary)(unary);
+    }
+
+  }
+
+  namespace test_variadic_templates
+  {
+
+    template <int...>
+    struct sum;
+
+    template <int N0, int... N1toN>
+    struct sum<N0, N1toN...>
+    {
+      static constexpr auto value = N0 + sum<N1toN...>::value;
+    };
+
+    template <>
+    struct sum<>
+    {
+      static constexpr auto value = 0;
+    };
+
+    static_assert(sum<>::value == 0, "");
+    static_assert(sum<1>::value == 1, "");
+    static_assert(sum<23>::value == 23, "");
+    static_assert(sum<1, 2>::value == 3, "");
+    static_assert(sum<5, 5, 11>::value == 21, "");
+    static_assert(sum<2, 3, 5, 7, 11, 13>::value == 41, "");
+
+  }
+
+  // http://stackoverflow.com/questions/13728184/template-aliases-and-sfinae
+  // Clang 3.1 fails with headers of libstd++ 4.8.3 when using std::function
+  // because of this.
+  namespace test_template_alias_sfinae
+  {
+
+    struct foo {};
+
+    template<typename T>
+    using member = typename T::member_type;
+
+    template<typename T>
+    void func(...) {}
+
+    template<typename T>
+    void func(member<T>*) {}
+
+    void test();
+
+    void test() { func<foo>(0); }
+
+  }
+
+}  // namespace cxx11
+
+#endif  // __cplusplus >= 201103L
+
+
+
+
+// If the compiler admits that it is not ready for C++14, why torture it?
+// Hopefully, this will speed up the test.
+
+#ifndef __cplusplus
+
+#error "This is not a C++ compiler"
+
+#elif __cplusplus < 201402L
+
+#error "This is not a C++14 compiler"
+
+#else
+
+namespace cxx14
+{
+
+  namespace test_polymorphic_lambdas
+  {
+
+    int
+    test()
+    {
+      const auto lambda = [](auto&&... args){
+        const auto istiny = [](auto x){
+          return (sizeof(x) == 1UL) ? 1 : 0;
+        };
+        const int aretiny[] = { istiny(args)... };
+        return aretiny[0];
+      };
+      return lambda(1, 1L, 1.0f, '1');
+    }
+
+  }
+
+  namespace test_binary_literals
+  {
+
+    constexpr auto ivii = 0b0000000000101010;
+    static_assert(ivii == 42, "wrong value");
+
+  }
+
+  namespace test_generalized_constexpr
+  {
+
+    template < typename CharT >
+    constexpr unsigned long
+    strlen_c(const CharT *const s) noexcept
+    {
+      auto length = 0UL;
+      for (auto p = s; *p; ++p)
+        ++length;
+      return length;
+    }
+
+    static_assert(strlen_c("") == 0UL, "");
+    static_assert(strlen_c("x") == 1UL, "");
+    static_assert(strlen_c("test") == 4UL, "");
+    static_assert(strlen_c("another\0test") == 7UL, "");
+
+  }
+
+  namespace test_lambda_init_capture
+  {
+
+    int
+    test()
+    {
+      auto x = 0;
+      const auto lambda1 = [a = x](int b){ return a + b; };
+      const auto lambda2 = [a = lambda1(x)](){ return a; };
+      return lambda2();
+    }
+
+  }
+
+  namespace test_digit_separators
+  {
+
+    constexpr auto ten_million = 100'000'000;
+    static_assert(ten_million == 100000000, "");
+
+  }
+
+  namespace test_return_type_deduction
+  {
+
+    auto f(int& x) { return x; }
+    decltype(auto) g(int& x) { return x; }
+
+    template < typename T1, typename T2 >
+    struct is_same
+    {
+      static constexpr auto value = false;
+    };
+
+    template < typename T >
+    struct is_same<T, T>
+    {
+      static constexpr auto value = true;
+    };
+
+    int
+    test()
+    {
+      auto x = 0;
+      static_assert(is_same<int, decltype(f(x))>::value, "");
+      static_assert(is_same<int&, decltype(g(x))>::value, "");
+      return x;
+    }
+
+  }
+
+}  // namespace cxx14
+
+#endif  // __cplusplus >= 201402L
+
+
+
+_ACEOF
+if ac_fn_cxx_try_compile "$LINENO"
+then :
+  eval $cachevar=yes
+else $as_nop
+  eval $cachevar=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+           CXX="$ac_save_CXX"
+fi
+eval ac_res=\$$cachevar
+	       { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_res" >&5
+printf "%s\n" "$ac_res" >&6; }
+        if eval test x\$$cachevar = xyes; then
+          CXX="$CXX $switch"
+          if test -n "$CXXCPP" ; then
+            CXXCPP="$CXXCPP $switch"
+          fi
+          ac_success=yes
+          break
+        fi
+      done
+      if test x$ac_success = xyes; then
+        break
+      fi
+    done
+  fi
+  ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+  if test x$ax_cxx_compile_cxx14_required = xtrue; then
+    if test x$ac_success = xno; then
+      as_fn_error $? "*** A compiler with support for C++14 language features is required." "$LINENO" 5
+    fi
+  fi
+  if test x$ac_success = xno; then
+    HAVE_CXX14=0
+    { printf "%s\n" "$as_me:${as_lineno-$LINENO}: No compiler with C++14 support was found" >&5
+printf "%s\n" "$as_me: No compiler with C++14 support was found" >&6;}
+  else
+    HAVE_CXX14=1
+
+printf "%s\n" "#define HAVE_CXX14 1" >>confdefs.h
+
+  fi
+
+
+  fi
+  if test "x${HAVE_CXX14}" = "x1" -o "x${HAVE_CXX17}" = "x1"; then
+
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether compiler supports -Wall" >&5
+printf %s "checking whether compiler supports -Wall... " >&6; }
+T_CONFIGURE_CXXFLAGS="${CONFIGURE_CXXFLAGS}"
+T_APPEND_V=-Wall
+  if test "x${CONFIGURE_CXXFLAGS}" = "x" -o "x${T_APPEND_V}" = "x" ; then
+  CONFIGURE_CXXFLAGS="${CONFIGURE_CXXFLAGS}${T_APPEND_V}"
+else
+  CONFIGURE_CXXFLAGS="${CONFIGURE_CXXFLAGS} ${T_APPEND_V}"
+fi
+
+
+if test "x${CONFIGURE_CXXFLAGS}" = "x" -o "x${SPECIFIED_CXXFLAGS}" = "x" ; then
+  CXXFLAGS="${CONFIGURE_CXXFLAGS}${SPECIFIED_CXXFLAGS}"
+else
+  CXXFLAGS="${CONFIGURE_CXXFLAGS} ${SPECIFIED_CXXFLAGS}"
+fi
+
+ac_ext=cpp
+ac_cpp='$CXXCPP $CPPFLAGS'
+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
+
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+
+int
+main (void)
+{
+
+    return 0;
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_cxx_try_compile "$LINENO"
+then :
+  je_cv_cxxflags_added=-Wall
+              { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+printf "%s\n" "yes" >&6; }
+else $as_nop
+  je_cv_cxxflags_added=
+              { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
+              CONFIGURE_CXXFLAGS="${T_CONFIGURE_CXXFLAGS}"
+
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+if test "x${CONFIGURE_CXXFLAGS}" = "x" -o "x${SPECIFIED_CXXFLAGS}" = "x" ; then
+  CXXFLAGS="${CONFIGURE_CXXFLAGS}${SPECIFIED_CXXFLAGS}"
+else
+  CXXFLAGS="${CONFIGURE_CXXFLAGS} ${SPECIFIED_CXXFLAGS}"
+fi
+
+
+
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether compiler supports -Wextra" >&5
+printf %s "checking whether compiler supports -Wextra... " >&6; }
+T_CONFIGURE_CXXFLAGS="${CONFIGURE_CXXFLAGS}"
+T_APPEND_V=-Wextra
+  if test "x${CONFIGURE_CXXFLAGS}" = "x" -o "x${T_APPEND_V}" = "x" ; then
+  CONFIGURE_CXXFLAGS="${CONFIGURE_CXXFLAGS}${T_APPEND_V}"
+else
+  CONFIGURE_CXXFLAGS="${CONFIGURE_CXXFLAGS} ${T_APPEND_V}"
+fi
+
+
+if test "x${CONFIGURE_CXXFLAGS}" = "x" -o "x${SPECIFIED_CXXFLAGS}" = "x" ; then
+  CXXFLAGS="${CONFIGURE_CXXFLAGS}${SPECIFIED_CXXFLAGS}"
+else
+  CXXFLAGS="${CONFIGURE_CXXFLAGS} ${SPECIFIED_CXXFLAGS}"
+fi
+
+ac_ext=cpp
+ac_cpp='$CXXCPP $CPPFLAGS'
+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
+
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+
+int
+main (void)
+{
+
+    return 0;
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_cxx_try_compile "$LINENO"
+then :
+  je_cv_cxxflags_added=-Wextra
+              { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+printf "%s\n" "yes" >&6; }
+else $as_nop
+  je_cv_cxxflags_added=
+              { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
+              CONFIGURE_CXXFLAGS="${T_CONFIGURE_CXXFLAGS}"
+
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+if test "x${CONFIGURE_CXXFLAGS}" = "x" -o "x${SPECIFIED_CXXFLAGS}" = "x" ; then
+  CXXFLAGS="${CONFIGURE_CXXFLAGS}${SPECIFIED_CXXFLAGS}"
+else
+  CXXFLAGS="${CONFIGURE_CXXFLAGS} ${SPECIFIED_CXXFLAGS}"
+fi
+
+
+
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether compiler supports -g3" >&5
+printf %s "checking whether compiler supports -g3... " >&6; }
+T_CONFIGURE_CXXFLAGS="${CONFIGURE_CXXFLAGS}"
+T_APPEND_V=-g3
+  if test "x${CONFIGURE_CXXFLAGS}" = "x" -o "x${T_APPEND_V}" = "x" ; then
+  CONFIGURE_CXXFLAGS="${CONFIGURE_CXXFLAGS}${T_APPEND_V}"
+else
+  CONFIGURE_CXXFLAGS="${CONFIGURE_CXXFLAGS} ${T_APPEND_V}"
+fi
+
+
+if test "x${CONFIGURE_CXXFLAGS}" = "x" -o "x${SPECIFIED_CXXFLAGS}" = "x" ; then
+  CXXFLAGS="${CONFIGURE_CXXFLAGS}${SPECIFIED_CXXFLAGS}"
+else
+  CXXFLAGS="${CONFIGURE_CXXFLAGS} ${SPECIFIED_CXXFLAGS}"
+fi
+
+ac_ext=cpp
+ac_cpp='$CXXCPP $CPPFLAGS'
+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
+
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+
+int
+main (void)
+{
+
+    return 0;
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_cxx_try_compile "$LINENO"
+then :
+  je_cv_cxxflags_added=-g3
+              { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+printf "%s\n" "yes" >&6; }
+else $as_nop
+  je_cv_cxxflags_added=
+              { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
+              CONFIGURE_CXXFLAGS="${T_CONFIGURE_CXXFLAGS}"
+
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+if test "x${CONFIGURE_CXXFLAGS}" = "x" -o "x${SPECIFIED_CXXFLAGS}" = "x" ; then
+  CXXFLAGS="${CONFIGURE_CXXFLAGS}${SPECIFIED_CXXFLAGS}"
+else
+  CXXFLAGS="${CONFIGURE_CXXFLAGS} ${SPECIFIED_CXXFLAGS}"
+fi
+
+
+
+    SAVED_LIBS="${LIBS}"
+    T_APPEND_V=-lstdc++
+  if test "x${LIBS}" = "x" -o "x${T_APPEND_V}" = "x" ; then
+  LIBS="${LIBS}${T_APPEND_V}"
+else
+  LIBS="${LIBS} ${T_APPEND_V}"
+fi
+
+
+
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether libstdc++ linkage is compilable" >&5
+printf %s "checking whether libstdc++ linkage is compilable... " >&6; }
+if test ${je_cv_libstdcxx+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+#include <stdlib.h>
+
+int
+main (void)
+{
+
+	int *arr = (int *)malloc(sizeof(int) * 42);
+	if (arr == NULL)
+		return 1;
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"
+then :
+  je_cv_libstdcxx=yes
+else $as_nop
+  je_cv_libstdcxx=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
+    conftest$ac_exeext conftest.$ac_ext
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $je_cv_libstdcxx" >&5
+printf "%s\n" "$je_cv_libstdcxx" >&6; }
+
+    if test "x${je_cv_libstdcxx}" = "xno" ; then
+      LIBS="${SAVED_LIBS}"
+    fi
+  else
+    enable_cxx="0"
+  fi
+fi
+if test "x$enable_cxx" = "x1"; then
+
+printf "%s\n" "#define JEMALLOC_ENABLE_CXX  " >>confdefs.h
+
+fi
+
+
+
+
+
+ac_header= ac_cache=
+for ac_item in $ac_header_c_list
+do
+  if test $ac_cache; then
+    ac_fn_c_check_header_compile "$LINENO" $ac_header ac_cv_header_$ac_cache "$ac_includes_default"
+    if eval test \"x\$ac_cv_header_$ac_cache\" = xyes; then
+      printf "%s\n" "#define $ac_item 1" >> confdefs.h
+    fi
+    ac_header= ac_cache=
+  elif test $ac_header; then
+    ac_cache=$ac_item
+  else
+    ac_header=$ac_item
+  fi
+done
+
+
+
+
+
+
+
+
+if test $ac_cv_header_stdlib_h = yes && test $ac_cv_header_string_h = yes
+then :
+
+printf "%s\n" "#define STDC_HEADERS 1" >>confdefs.h
+
+fi
+ { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether byte ordering is bigendian" >&5
+printf %s "checking whether byte ordering is bigendian... " >&6; }
+if test ${ac_cv_c_bigendian+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  ac_cv_c_bigendian=unknown
+    # See if we're dealing with a universal compiler.
+    cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#ifndef __APPLE_CC__
+	       not a universal capable compiler
+	     #endif
+	     typedef int dummy;
+
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+
+	# Check for potential -arch flags.  It is not universal unless
+	# there are at least two -arch flags with different values.
+	ac_arch=
+	ac_prev=
+	for ac_word in $CC $CFLAGS $CPPFLAGS $LDFLAGS; do
+	 if test -n "$ac_prev"; then
+	   case $ac_word in
+	     i?86 | x86_64 | ppc | ppc64)
+	       if test -z "$ac_arch" || test "$ac_arch" = "$ac_word"; then
+		 ac_arch=$ac_word
+	       else
+		 ac_cv_c_bigendian=universal
+		 break
+	       fi
+	       ;;
+	   esac
+	   ac_prev=
+	 elif test "x$ac_word" = "x-arch"; then
+	   ac_prev=arch
+	 fi
+       done
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+    if test $ac_cv_c_bigendian = unknown; then
+      # See if sys/param.h defines the BYTE_ORDER macro.
+      cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <sys/types.h>
+	     #include <sys/param.h>
+
+int
+main (void)
+{
+#if ! (defined BYTE_ORDER && defined BIG_ENDIAN \
+		     && defined LITTLE_ENDIAN && BYTE_ORDER && BIG_ENDIAN \
+		     && LITTLE_ENDIAN)
+	      bogus endian macros
+	     #endif
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  # It does; now see whether it defined to BIG_ENDIAN or not.
+	 cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <sys/types.h>
+		#include <sys/param.h>
+
+int
+main (void)
+{
+#if BYTE_ORDER != BIG_ENDIAN
+		 not big endian
+		#endif
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  ac_cv_c_bigendian=yes
+else $as_nop
+  ac_cv_c_bigendian=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+    fi
+    if test $ac_cv_c_bigendian = unknown; then
+      # See if <limits.h> defines _LITTLE_ENDIAN or _BIG_ENDIAN (e.g., Solaris).
+      cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <limits.h>
+
+int
+main (void)
+{
+#if ! (defined _LITTLE_ENDIAN || defined _BIG_ENDIAN)
+	      bogus endian macros
+	     #endif
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  # It does; now see whether it defined to _BIG_ENDIAN or not.
+	 cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <limits.h>
+
+int
+main (void)
+{
+#ifndef _BIG_ENDIAN
+		 not big endian
+		#endif
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  ac_cv_c_bigendian=yes
+else $as_nop
+  ac_cv_c_bigendian=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+    fi
+    if test $ac_cv_c_bigendian = unknown; then
+      # Compile a test program.
+      if test "$cross_compiling" = yes
+then :
+  # Try to guess by grepping values from an object file.
+	 cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+unsigned short int ascii_mm[] =
+		  { 0x4249, 0x4765, 0x6E44, 0x6961, 0x6E53, 0x7953, 0 };
+		unsigned short int ascii_ii[] =
+		  { 0x694C, 0x5454, 0x656C, 0x6E45, 0x6944, 0x6E61, 0 };
+		int use_ascii (int i) {
+		  return ascii_mm[i] + ascii_ii[i];
+		}
+		unsigned short int ebcdic_ii[] =
+		  { 0x89D3, 0xE3E3, 0x8593, 0x95C5, 0x89C4, 0x9581, 0 };
+		unsigned short int ebcdic_mm[] =
+		  { 0xC2C9, 0xC785, 0x95C4, 0x8981, 0x95E2, 0xA8E2, 0 };
+		int use_ebcdic (int i) {
+		  return ebcdic_mm[i] + ebcdic_ii[i];
+		}
+		extern int foo;
+
+int
+main (void)
+{
+return use_ascii (foo) == use_ebcdic (foo);
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  if grep BIGenDianSyS conftest.$ac_objext >/dev/null; then
+	      ac_cv_c_bigendian=yes
+	    fi
+	    if grep LiTTleEnDian conftest.$ac_objext >/dev/null ; then
+	      if test "$ac_cv_c_bigendian" = unknown; then
+		ac_cv_c_bigendian=no
+	      else
+		# finding both strings is unlikely to happen, but who knows?
+		ac_cv_c_bigendian=unknown
+	      fi
+	    fi
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+$ac_includes_default
+int
+main (void)
+{
+
+	     /* Are we little or big endian?  From Harbison&Steele.  */
+	     union
+	     {
+	       long int l;
+	       char c[sizeof (long int)];
+	     } u;
+	     u.l = 1;
+	     return u.c[sizeof (long int) - 1] == 1;
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_run "$LINENO"
+then :
+  ac_cv_c_bigendian=no
+else $as_nop
+  ac_cv_c_bigendian=yes
+fi
+rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
+  conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+
+    fi
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_c_bigendian" >&5
+printf "%s\n" "$ac_cv_c_bigendian" >&6; }
+ case $ac_cv_c_bigendian in #(
+   yes)
+     ac_cv_big_endian=1;; #(
+   no)
+     ac_cv_big_endian=0 ;; #(
+   universal)
+
+printf "%s\n" "#define AC_APPLE_UNIVERSAL_BUILD 1" >>confdefs.h
+
+     ;; #(
+   *)
+     as_fn_error $? "unknown endianness
+ presetting ac_cv_c_bigendian=no (or yes) will help" "$LINENO" 5 ;;
+ esac
+
+if test "x${ac_cv_big_endian}" = "x1" ; then
+
+printf "%s\n" "#define JEMALLOC_BIG_ENDIAN  " >>confdefs.h
+
+fi
+
+if test "x${je_cv_msvc}" = "xyes" -a "x${ac_cv_header_inttypes_h}" = "xno"; then
+  T_APPEND_V=-I${srcdir}/include/msvc_compat/C99
+  if test "x${CPPFLAGS}" = "x" -o "x${T_APPEND_V}" = "x" ; then
+  CPPFLAGS="${CPPFLAGS}${T_APPEND_V}"
+else
+  CPPFLAGS="${CPPFLAGS} ${T_APPEND_V}"
+fi
+
+
+fi
+
+if test "x${je_cv_msvc}" = "xyes" ; then
+  LG_SIZEOF_PTR=LG_SIZEOF_PTR_WIN
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: Using a predefined value for sizeof(void *): 4 for 32-bit, 8 for 64-bit" >&5
+printf "%s\n" "Using a predefined value for sizeof(void *): 4 for 32-bit, 8 for 64-bit" >&6; }
+else
+  # The cast to long int works around a bug in the HP C Compiler
+# version HP92453-01 B.11.11.23709.GP, which incorrectly rejects
+# declarations like `int a3[[(sizeof (unsigned char)) >= 0]];'.
+# This bug is HP SR number 8606223364.
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking size of void *" >&5
+printf %s "checking size of void *... " >&6; }
+if test ${ac_cv_sizeof_void_p+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  if ac_fn_c_compute_int "$LINENO" "(long int) (sizeof (void *))" "ac_cv_sizeof_void_p"        "$ac_includes_default"
+then :
+
+else $as_nop
+  if test "$ac_cv_type_void_p" = yes; then
+     { { printf "%s\n" "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
+printf "%s\n" "$as_me: error: in \`$ac_pwd':" >&2;}
+as_fn_error 77 "cannot compute sizeof (void *)
+See \`config.log' for more details" "$LINENO" 5; }
+   else
+     ac_cv_sizeof_void_p=0
+   fi
+fi
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_sizeof_void_p" >&5
+printf "%s\n" "$ac_cv_sizeof_void_p" >&6; }
+
+
+
+printf "%s\n" "#define SIZEOF_VOID_P $ac_cv_sizeof_void_p" >>confdefs.h
+
+
+  if test "x${ac_cv_sizeof_void_p}" = "x8" ; then
+    LG_SIZEOF_PTR=3
+  elif test "x${ac_cv_sizeof_void_p}" = "x4" ; then
+    LG_SIZEOF_PTR=2
+  else
+    as_fn_error $? "Unsupported pointer size: ${ac_cv_sizeof_void_p}" "$LINENO" 5
+  fi
+fi
+
+printf "%s\n" "#define LG_SIZEOF_PTR $LG_SIZEOF_PTR" >>confdefs.h
+
+
+# The cast to long int works around a bug in the HP C Compiler
+# version HP92453-01 B.11.11.23709.GP, which incorrectly rejects
+# declarations like `int a3[[(sizeof (unsigned char)) >= 0]];'.
+# This bug is HP SR number 8606223364.
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking size of int" >&5
+printf %s "checking size of int... " >&6; }
+if test ${ac_cv_sizeof_int+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  if ac_fn_c_compute_int "$LINENO" "(long int) (sizeof (int))" "ac_cv_sizeof_int"        "$ac_includes_default"
+then :
+
+else $as_nop
+  if test "$ac_cv_type_int" = yes; then
+     { { printf "%s\n" "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
+printf "%s\n" "$as_me: error: in \`$ac_pwd':" >&2;}
+as_fn_error 77 "cannot compute sizeof (int)
+See \`config.log' for more details" "$LINENO" 5; }
+   else
+     ac_cv_sizeof_int=0
+   fi
+fi
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_sizeof_int" >&5
+printf "%s\n" "$ac_cv_sizeof_int" >&6; }
+
+
+
+printf "%s\n" "#define SIZEOF_INT $ac_cv_sizeof_int" >>confdefs.h
+
+
+if test "x${ac_cv_sizeof_int}" = "x8" ; then
+  LG_SIZEOF_INT=3
+elif test "x${ac_cv_sizeof_int}" = "x4" ; then
+  LG_SIZEOF_INT=2
+else
+  as_fn_error $? "Unsupported int size: ${ac_cv_sizeof_int}" "$LINENO" 5
+fi
+
+printf "%s\n" "#define LG_SIZEOF_INT $LG_SIZEOF_INT" >>confdefs.h
+
+
+# The cast to long int works around a bug in the HP C Compiler
+# version HP92453-01 B.11.11.23709.GP, which incorrectly rejects
+# declarations like `int a3[[(sizeof (unsigned char)) >= 0]];'.
+# This bug is HP SR number 8606223364.
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking size of long" >&5
+printf %s "checking size of long... " >&6; }
+if test ${ac_cv_sizeof_long+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  if ac_fn_c_compute_int "$LINENO" "(long int) (sizeof (long))" "ac_cv_sizeof_long"        "$ac_includes_default"
+then :
+
+else $as_nop
+  if test "$ac_cv_type_long" = yes; then
+     { { printf "%s\n" "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
+printf "%s\n" "$as_me: error: in \`$ac_pwd':" >&2;}
+as_fn_error 77 "cannot compute sizeof (long)
+See \`config.log' for more details" "$LINENO" 5; }
+   else
+     ac_cv_sizeof_long=0
+   fi
+fi
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_sizeof_long" >&5
+printf "%s\n" "$ac_cv_sizeof_long" >&6; }
+
+
+
+printf "%s\n" "#define SIZEOF_LONG $ac_cv_sizeof_long" >>confdefs.h
+
+
+if test "x${ac_cv_sizeof_long}" = "x8" ; then
+  LG_SIZEOF_LONG=3
+elif test "x${ac_cv_sizeof_long}" = "x4" ; then
+  LG_SIZEOF_LONG=2
+else
+  as_fn_error $? "Unsupported long size: ${ac_cv_sizeof_long}" "$LINENO" 5
+fi
+
+printf "%s\n" "#define LG_SIZEOF_LONG $LG_SIZEOF_LONG" >>confdefs.h
+
+
+# The cast to long int works around a bug in the HP C Compiler
+# version HP92453-01 B.11.11.23709.GP, which incorrectly rejects
+# declarations like `int a3[[(sizeof (unsigned char)) >= 0]];'.
+# This bug is HP SR number 8606223364.
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking size of long long" >&5
+printf %s "checking size of long long... " >&6; }
+if test ${ac_cv_sizeof_long_long+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  if ac_fn_c_compute_int "$LINENO" "(long int) (sizeof (long long))" "ac_cv_sizeof_long_long"        "$ac_includes_default"
+then :
+
+else $as_nop
+  if test "$ac_cv_type_long_long" = yes; then
+     { { printf "%s\n" "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
+printf "%s\n" "$as_me: error: in \`$ac_pwd':" >&2;}
+as_fn_error 77 "cannot compute sizeof (long long)
+See \`config.log' for more details" "$LINENO" 5; }
+   else
+     ac_cv_sizeof_long_long=0
+   fi
+fi
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_sizeof_long_long" >&5
+printf "%s\n" "$ac_cv_sizeof_long_long" >&6; }
+
+
+
+printf "%s\n" "#define SIZEOF_LONG_LONG $ac_cv_sizeof_long_long" >>confdefs.h
+
+
+if test "x${ac_cv_sizeof_long_long}" = "x8" ; then
+  LG_SIZEOF_LONG_LONG=3
+elif test "x${ac_cv_sizeof_long_long}" = "x4" ; then
+  LG_SIZEOF_LONG_LONG=2
+else
+  as_fn_error $? "Unsupported long long size: ${ac_cv_sizeof_long_long}" "$LINENO" 5
+fi
+
+printf "%s\n" "#define LG_SIZEOF_LONG_LONG $LG_SIZEOF_LONG_LONG" >>confdefs.h
+
+
+# The cast to long int works around a bug in the HP C Compiler
+# version HP92453-01 B.11.11.23709.GP, which incorrectly rejects
+# declarations like `int a3[[(sizeof (unsigned char)) >= 0]];'.
+# This bug is HP SR number 8606223364.
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking size of intmax_t" >&5
+printf %s "checking size of intmax_t... " >&6; }
+if test ${ac_cv_sizeof_intmax_t+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  if ac_fn_c_compute_int "$LINENO" "(long int) (sizeof (intmax_t))" "ac_cv_sizeof_intmax_t"        "$ac_includes_default"
+then :
+
+else $as_nop
+  if test "$ac_cv_type_intmax_t" = yes; then
+     { { printf "%s\n" "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
+printf "%s\n" "$as_me: error: in \`$ac_pwd':" >&2;}
+as_fn_error 77 "cannot compute sizeof (intmax_t)
+See \`config.log' for more details" "$LINENO" 5; }
+   else
+     ac_cv_sizeof_intmax_t=0
+   fi
+fi
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_sizeof_intmax_t" >&5
+printf "%s\n" "$ac_cv_sizeof_intmax_t" >&6; }
+
+
+
+printf "%s\n" "#define SIZEOF_INTMAX_T $ac_cv_sizeof_intmax_t" >>confdefs.h
+
+
+if test "x${ac_cv_sizeof_intmax_t}" = "x16" ; then
+  LG_SIZEOF_INTMAX_T=4
+elif test "x${ac_cv_sizeof_intmax_t}" = "x8" ; then
+  LG_SIZEOF_INTMAX_T=3
+elif test "x${ac_cv_sizeof_intmax_t}" = "x4" ; then
+  LG_SIZEOF_INTMAX_T=2
+else
+  as_fn_error $? "Unsupported intmax_t size: ${ac_cv_sizeof_intmax_t}" "$LINENO" 5
+fi
+
+printf "%s\n" "#define LG_SIZEOF_INTMAX_T $LG_SIZEOF_INTMAX_T" >>confdefs.h
+
+
+
+
+
+  # Make sure we can run config.sub.
+$SHELL "${ac_aux_dir}config.sub" sun4 >/dev/null 2>&1 ||
+  as_fn_error $? "cannot run $SHELL ${ac_aux_dir}config.sub" "$LINENO" 5
+
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking build system type" >&5
+printf %s "checking build system type... " >&6; }
+if test ${ac_cv_build+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  ac_build_alias=$build_alias
+test "x$ac_build_alias" = x &&
+  ac_build_alias=`$SHELL "${ac_aux_dir}config.guess"`
+test "x$ac_build_alias" = x &&
+  as_fn_error $? "cannot guess build type; you must specify one" "$LINENO" 5
+ac_cv_build=`$SHELL "${ac_aux_dir}config.sub" $ac_build_alias` ||
+  as_fn_error $? "$SHELL ${ac_aux_dir}config.sub $ac_build_alias failed" "$LINENO" 5
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_build" >&5
+printf "%s\n" "$ac_cv_build" >&6; }
+case $ac_cv_build in
+*-*-*) ;;
+*) as_fn_error $? "invalid value of canonical build" "$LINENO" 5;;
+esac
+build=$ac_cv_build
+ac_save_IFS=$IFS; IFS='-'
+set x $ac_cv_build
+shift
+build_cpu=$1
+build_vendor=$2
+shift; shift
+# Remember, the first character of IFS is used to create $*,
+# except with old shells:
+build_os=$*
+IFS=$ac_save_IFS
+case $build_os in *\ *) build_os=`echo "$build_os" | sed 's/ /-/g'`;; esac
+
+
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking host system type" >&5
+printf %s "checking host system type... " >&6; }
+if test ${ac_cv_host+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  if test "x$host_alias" = x; then
+  ac_cv_host=$ac_cv_build
+else
+  ac_cv_host=`$SHELL "${ac_aux_dir}config.sub" $host_alias` ||
+    as_fn_error $? "$SHELL ${ac_aux_dir}config.sub $host_alias failed" "$LINENO" 5
+fi
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_host" >&5
+printf "%s\n" "$ac_cv_host" >&6; }
+case $ac_cv_host in
+*-*-*) ;;
+*) as_fn_error $? "invalid value of canonical host" "$LINENO" 5;;
+esac
+host=$ac_cv_host
+ac_save_IFS=$IFS; IFS='-'
+set x $ac_cv_host
+shift
+host_cpu=$1
+host_vendor=$2
+shift; shift
+# Remember, the first character of IFS is used to create $*,
+# except with old shells:
+host_os=$*
+IFS=$ac_save_IFS
+case $host_os in *\ *) host_os=`echo "$host_os" | sed 's/ /-/g'`;; esac
+
+
+CPU_SPINWAIT=""
+case "${host_cpu}" in
+  i686|x86_64)
+	HAVE_CPU_SPINWAIT=1
+	if test "x${je_cv_msvc}" = "xyes" ; then
+	    if test ${je_cv_pause_msvc+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether pause instruction MSVC is compilable" >&5
+printf %s "checking whether pause instruction MSVC is compilable... " >&6; }
+if test ${je_cv_pause_msvc+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+int
+main (void)
+{
+_mm_pause(); return 0;
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"
+then :
+  je_cv_pause_msvc=yes
+else $as_nop
+  je_cv_pause_msvc=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
+    conftest$ac_exeext conftest.$ac_ext
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $je_cv_pause_msvc" >&5
+printf "%s\n" "$je_cv_pause_msvc" >&6; }
+
+fi
+
+	    if test "x${je_cv_pause_msvc}" = "xyes" ; then
+		CPU_SPINWAIT='_mm_pause()'
+	    fi
+	else
+	    if test ${je_cv_pause+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether pause instruction is compilable" >&5
+printf %s "checking whether pause instruction is compilable... " >&6; }
+if test ${je_cv_pause+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+int
+main (void)
+{
+__asm__ volatile("pause"); return 0;
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"
+then :
+  je_cv_pause=yes
+else $as_nop
+  je_cv_pause=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
+    conftest$ac_exeext conftest.$ac_ext
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $je_cv_pause" >&5
+printf "%s\n" "$je_cv_pause" >&6; }
+
+fi
+
+	    if test "x${je_cv_pause}" = "xyes" ; then
+		CPU_SPINWAIT='__asm__ volatile("pause")'
+	    fi
+	fi
+	;;
+  aarch64|arm*)
+	HAVE_CPU_SPINWAIT=1
+		if test ${je_cv_isb+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether isb instruction is compilable" >&5
+printf %s "checking whether isb instruction is compilable... " >&6; }
+if test ${je_cv_isb+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+int
+main (void)
+{
+__asm__ volatile("isb"); return 0;
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"
+then :
+  je_cv_isb=yes
+else $as_nop
+  je_cv_isb=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
+    conftest$ac_exeext conftest.$ac_ext
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $je_cv_isb" >&5
+printf "%s\n" "$je_cv_isb" >&6; }
+
+fi
+
+	if test "x${je_cv_isb}" = "xyes" ; then
+	    CPU_SPINWAIT='__asm__ volatile("isb")'
+	fi
+	;;
+  *)
+	HAVE_CPU_SPINWAIT=0
+	;;
+esac
+
+printf "%s\n" "#define HAVE_CPU_SPINWAIT $HAVE_CPU_SPINWAIT" >>confdefs.h
+
+
+printf "%s\n" "#define CPU_SPINWAIT $CPU_SPINWAIT" >>confdefs.h
+
+
+
+# Check whether --with-lg_vaddr was given.
+if test ${with_lg_vaddr+y}
+then :
+  withval=$with_lg_vaddr; LG_VADDR="$with_lg_vaddr"
+else $as_nop
+  LG_VADDR="detect"
+fi
+
+
+case "${host_cpu}" in
+  aarch64)
+    if test "x$LG_VADDR" = "xdetect"; then
+      { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking number of significant virtual address bits" >&5
+printf %s "checking number of significant virtual address bits... " >&6; }
+      if test "x${LG_SIZEOF_PTR}" = "x2" ; then
+        #aarch64 ILP32
+        LG_VADDR=32
+      else
+        #aarch64 LP64
+        LG_VADDR=48
+      fi
+      { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $LG_VADDR" >&5
+printf "%s\n" "$LG_VADDR" >&6; }
+    fi
+    ;;
+  x86_64)
+    if test "x$LG_VADDR" = "xdetect"; then
+      { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking number of significant virtual address bits" >&5
+printf %s "checking number of significant virtual address bits... " >&6; }
+if test ${je_cv_lg_vaddr+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  if test "$cross_compiling" = yes
+then :
+  je_cv_lg_vaddr=57
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+#include <stdio.h>
+#ifdef _WIN32
+#include <limits.h>
+#include <intrin.h>
+typedef unsigned __int32 uint32_t;
+#else
+#include <stdint.h>
+#endif
+
+int
+main (void)
+{
+
+	uint32_t r[4];
+	uint32_t eax_in = 0x80000008U;
+#ifdef _WIN32
+	__cpuid((int *)r, (int)eax_in);
+#else
+	asm volatile ("cpuid"
+	    : "=a" (r[0]), "=b" (r[1]), "=c" (r[2]), "=d" (r[3])
+	    : "a" (eax_in), "c" (0)
+	);
+#endif
+	uint32_t eax_out = r[0];
+	uint32_t vaddr = ((eax_out & 0x0000ff00U) >> 8);
+	FILE *f = fopen("conftest.out", "w");
+	if (f == NULL) {
+		return 1;
+	}
+	if (vaddr > (sizeof(void *) << 3)) {
+		vaddr = sizeof(void *) << 3;
+	}
+	fprintf(f, "%u", vaddr);
+	fclose(f);
+	return 0;
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_run "$LINENO"
+then :
+  je_cv_lg_vaddr=`cat conftest.out`
+else $as_nop
+  je_cv_lg_vaddr=error
+fi
+rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
+  conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $je_cv_lg_vaddr" >&5
+printf "%s\n" "$je_cv_lg_vaddr" >&6; }
+      if test "x${je_cv_lg_vaddr}" != "x" ; then
+        LG_VADDR="${je_cv_lg_vaddr}"
+      fi
+      if test "x${LG_VADDR}" != "xerror" ; then
+
+printf "%s\n" "#define LG_VADDR $LG_VADDR" >>confdefs.h
+
+      else
+        as_fn_error $? "cannot determine number of significant virtual address bits" "$LINENO" 5
+      fi
+    fi
+    ;;
+  *)
+    if test "x$LG_VADDR" = "xdetect"; then
+      { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking number of significant virtual address bits" >&5
+printf %s "checking number of significant virtual address bits... " >&6; }
+      if test "x${LG_SIZEOF_PTR}" = "x3" ; then
+        LG_VADDR=64
+      elif test "x${LG_SIZEOF_PTR}" = "x2" ; then
+        LG_VADDR=32
+      elif test "x${LG_SIZEOF_PTR}" = "xLG_SIZEOF_PTR_WIN" ; then
+        LG_VADDR="(1U << (LG_SIZEOF_PTR_WIN+3))"
+      else
+        as_fn_error $? "Unsupported lg(pointer size): ${LG_SIZEOF_PTR}" "$LINENO" 5
+      fi
+      { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $LG_VADDR" >&5
+printf "%s\n" "$LG_VADDR" >&6; }
+    fi
+    ;;
+esac
+
+printf "%s\n" "#define LG_VADDR $LG_VADDR" >>confdefs.h
+
+
+LD_PRELOAD_VAR="LD_PRELOAD"
+so="so"
+importlib="${so}"
+o="$ac_objext"
+a="a"
+exe="$ac_exeext"
+libprefix="lib"
+link_whole_archive="0"
+DSO_LDFLAGS='-shared -Wl,-soname,$(@F)'
+RPATH='-Wl,-rpath,$(1)'
+SOREV="${so}.${rev}"
+PIC_CFLAGS='-fPIC -DPIC'
+CTARGET='-o $@'
+LDTARGET='-o $@'
+TEST_LD_MODE=
+EXTRA_LDFLAGS=
+ARFLAGS='crs'
+AROUT=' $@'
+CC_MM=1
+
+if test "x$je_cv_cray_prgenv_wrapper" = "xyes" ; then
+  TEST_LD_MODE='-dynamic'
+fi
+
+if test "x${je_cv_cray}" = "xyes" ; then
+  CC_MM=
+fi
+
+
+
+
+if test -n "$ac_tool_prefix"; then
+  # Extract the first word of "${ac_tool_prefix}ar", so it can be a program name with args.
+set dummy ${ac_tool_prefix}ar; ac_word=$2
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+printf %s "checking for $ac_word... " >&6; }
+if test ${ac_cv_prog_AR+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  if test -n "$AR"; then
+  ac_cv_prog_AR="$AR" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  case $as_dir in #(((
+    '') as_dir=./ ;;
+    */) ;;
+    *) as_dir=$as_dir/ ;;
+  esac
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if as_fn_executable_p "$as_dir$ac_word$ac_exec_ext"; then
+    ac_cv_prog_AR="${ac_tool_prefix}ar"
+    printf "%s\n" "$as_me:${as_lineno-$LINENO}: found $as_dir$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+fi
+fi
+AR=$ac_cv_prog_AR
+if test -n "$AR"; then
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $AR" >&5
+printf "%s\n" "$AR" >&6; }
+else
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
+fi
+
+
+fi
+if test -z "$ac_cv_prog_AR"; then
+  ac_ct_AR=$AR
+  # Extract the first word of "ar", so it can be a program name with args.
+set dummy ar; ac_word=$2
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+printf %s "checking for $ac_word... " >&6; }
+if test ${ac_cv_prog_ac_ct_AR+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  if test -n "$ac_ct_AR"; then
+  ac_cv_prog_ac_ct_AR="$ac_ct_AR" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  case $as_dir in #(((
+    '') as_dir=./ ;;
+    */) ;;
+    *) as_dir=$as_dir/ ;;
+  esac
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if as_fn_executable_p "$as_dir$ac_word$ac_exec_ext"; then
+    ac_cv_prog_ac_ct_AR="ar"
+    printf "%s\n" "$as_me:${as_lineno-$LINENO}: found $as_dir$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+fi
+fi
+ac_ct_AR=$ac_cv_prog_ac_ct_AR
+if test -n "$ac_ct_AR"; then
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_ct_AR" >&5
+printf "%s\n" "$ac_ct_AR" >&6; }
+else
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
+fi
+
+  if test "x$ac_ct_AR" = x; then
+    AR=":"
+  else
+    case $cross_compiling:$ac_tool_warned in
+yes:)
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5
+printf "%s\n" "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;}
+ac_tool_warned=yes ;;
+esac
+    AR=$ac_ct_AR
+  fi
+else
+  AR="$ac_cv_prog_AR"
+fi
+
+
+
+
+
+if test -n "$ac_tool_prefix"; then
+  # Extract the first word of "${ac_tool_prefix}nm", so it can be a program name with args.
+set dummy ${ac_tool_prefix}nm; ac_word=$2
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+printf %s "checking for $ac_word... " >&6; }
+if test ${ac_cv_prog_NM+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  if test -n "$NM"; then
+  ac_cv_prog_NM="$NM" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  case $as_dir in #(((
+    '') as_dir=./ ;;
+    */) ;;
+    *) as_dir=$as_dir/ ;;
+  esac
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if as_fn_executable_p "$as_dir$ac_word$ac_exec_ext"; then
+    ac_cv_prog_NM="${ac_tool_prefix}nm"
+    printf "%s\n" "$as_me:${as_lineno-$LINENO}: found $as_dir$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+fi
+fi
+NM=$ac_cv_prog_NM
+if test -n "$NM"; then
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $NM" >&5
+printf "%s\n" "$NM" >&6; }
+else
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
+fi
+
+
+fi
+if test -z "$ac_cv_prog_NM"; then
+  ac_ct_NM=$NM
+  # Extract the first word of "nm", so it can be a program name with args.
+set dummy nm; ac_word=$2
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+printf %s "checking for $ac_word... " >&6; }
+if test ${ac_cv_prog_ac_ct_NM+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  if test -n "$ac_ct_NM"; then
+  ac_cv_prog_ac_ct_NM="$ac_ct_NM" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  case $as_dir in #(((
+    '') as_dir=./ ;;
+    */) ;;
+    *) as_dir=$as_dir/ ;;
+  esac
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if as_fn_executable_p "$as_dir$ac_word$ac_exec_ext"; then
+    ac_cv_prog_ac_ct_NM="nm"
+    printf "%s\n" "$as_me:${as_lineno-$LINENO}: found $as_dir$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+fi
+fi
+ac_ct_NM=$ac_cv_prog_ac_ct_NM
+if test -n "$ac_ct_NM"; then
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_ct_NM" >&5
+printf "%s\n" "$ac_ct_NM" >&6; }
+else
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
+fi
+
+  if test "x$ac_ct_NM" = x; then
+    NM=":"
+  else
+    case $cross_compiling:$ac_tool_warned in
+yes:)
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5
+printf "%s\n" "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;}
+ac_tool_warned=yes ;;
+esac
+    NM=$ac_ct_NM
+  fi
+else
+  NM="$ac_cv_prog_NM"
+fi
+
+
+for ac_prog in gawk mawk nawk awk
+do
+  # Extract the first word of "$ac_prog", so it can be a program name with args.
+set dummy $ac_prog; ac_word=$2
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+printf %s "checking for $ac_word... " >&6; }
+if test ${ac_cv_prog_AWK+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  if test -n "$AWK"; then
+  ac_cv_prog_AWK="$AWK" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  case $as_dir in #(((
+    '') as_dir=./ ;;
+    */) ;;
+    *) as_dir=$as_dir/ ;;
+  esac
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if as_fn_executable_p "$as_dir$ac_word$ac_exec_ext"; then
+    ac_cv_prog_AWK="$ac_prog"
+    printf "%s\n" "$as_me:${as_lineno-$LINENO}: found $as_dir$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+fi
+fi
+AWK=$ac_cv_prog_AWK
+if test -n "$AWK"; then
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $AWK" >&5
+printf "%s\n" "$AWK" >&6; }
+else
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
+fi
+
+
+  test -n "$AWK" && break
+done
+
+
+
+
+# Check whether --with-version was given.
+if test ${with_version+y}
+then :
+  withval=$with_version;
+    echo "${with_version}" | grep '^[0-9]\+\.[0-9]\+\.[0-9]\+-[0-9]\+-g[0-9a-f]\+$' 2>&1 1>/dev/null
+    if test $? -eq 0 ; then
+      echo "$with_version" > "${objroot}VERSION"
+    else
+      echo "${with_version}" | grep '^VERSION$' 2>&1 1>/dev/null
+      if test $? -ne 0 ; then
+        as_fn_error $? "${with_version} does not match <major>.<minor>.<bugfix>-<nrev>-g<gid> or VERSION" "$LINENO" 5
+      fi
+    fi
+
+else $as_nop
+
+        if test "x`test ! \"${srcroot}\" && cd \"${srcroot}\"; git rev-parse --is-inside-work-tree 2>/dev/null`" = "xtrue" ; then
+                        for pattern in '[0-9].[0-9].[0-9]' '[0-9].[0-9].[0-9][0-9]' \
+                     '[0-9].[0-9][0-9].[0-9]' '[0-9].[0-9][0-9].[0-9][0-9]' \
+                     '[0-9][0-9].[0-9].[0-9]' '[0-9][0-9].[0-9].[0-9][0-9]' \
+                     '[0-9][0-9].[0-9][0-9].[0-9]' \
+                     '[0-9][0-9].[0-9][0-9].[0-9][0-9]'; do
+        (test ! "${srcroot}" && cd "${srcroot}"; git describe --long --abbrev=40 --match="${pattern}") > "${objroot}VERSION.tmp" 2>/dev/null
+        if test $? -eq 0 ; then
+          mv "${objroot}VERSION.tmp" "${objroot}VERSION"
+          break
+        fi
+      done
+    fi
+    rm -f "${objroot}VERSION.tmp"
+
+fi
+
+
+if test ! -e "${objroot}VERSION" ; then
+  if test ! -e "${srcroot}VERSION" ; then
+    { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: Missing VERSION file, and unable to generate it; creating bogus VERSION" >&5
+printf "%s\n" "Missing VERSION file, and unable to generate it; creating bogus VERSION" >&6; }
+    echo "0.0.0-0-g000000missing_version_try_git_fetch_tags" > "${objroot}VERSION"
+  else
+    cp ${srcroot}VERSION ${objroot}VERSION
+  fi
+fi
+jemalloc_version=`cat "${objroot}VERSION"`
+jemalloc_version_major=`echo ${jemalloc_version} | tr ".g-" " " | awk '{print $1}'`
+jemalloc_version_minor=`echo ${jemalloc_version} | tr ".g-" " " | awk '{print $2}'`
+jemalloc_version_bugfix=`echo ${jemalloc_version} | tr ".g-" " " | awk '{print $3}'`
+jemalloc_version_nrev=`echo ${jemalloc_version} | tr ".g-" " " | awk '{print $4}'`
+jemalloc_version_gid=`echo ${jemalloc_version} | tr ".g-" " " | awk '{print $5}'`
+
+
+
+
+
+
+
+default_retain="0"
+zero_realloc_default_free="0"
+maps_coalesce="1"
+DUMP_SYMS="${NM} -a"
+SYM_PREFIX=""
+case "${host}" in
+  *-*-darwin* | *-*-ios*)
+	abi="macho"
+	RPATH=""
+	LD_PRELOAD_VAR="DYLD_INSERT_LIBRARIES"
+	so="dylib"
+	importlib="${so}"
+	force_tls="0"
+	DSO_LDFLAGS='-shared -Wl,-install_name,$(LIBDIR)/$(@F)'
+	SOREV="${rev}.${so}"
+	sbrk_deprecated="1"
+	SYM_PREFIX="_"
+	;;
+  *-*-freebsd*)
+	T_APPEND_V=-D_BSD_SOURCE
+  if test "x${CPPFLAGS}" = "x" -o "x${T_APPEND_V}" = "x" ; then
+  CPPFLAGS="${CPPFLAGS}${T_APPEND_V}"
+else
+  CPPFLAGS="${CPPFLAGS} ${T_APPEND_V}"
+fi
+
+
+	abi="elf"
+
+printf "%s\n" "#define JEMALLOC_SYSCTL_VM_OVERCOMMIT  " >>confdefs.h
+
+	force_lazy_lock="1"
+	;;
+  *-*-dragonfly*)
+	abi="elf"
+	;;
+  *-*-openbsd*)
+	abi="elf"
+	force_tls="0"
+	;;
+  *-*-bitrig*)
+	abi="elf"
+	;;
+  *-*-linux-android*)
+		T_APPEND_V=-D_GNU_SOURCE
+  if test "x${CPPFLAGS}" = "x" -o "x${T_APPEND_V}" = "x" ; then
+  CPPFLAGS="${CPPFLAGS}${T_APPEND_V}"
+else
+  CPPFLAGS="${CPPFLAGS} ${T_APPEND_V}"
+fi
+
+
+	abi="elf"
+	glibc="0"
+
+printf "%s\n" "#define JEMALLOC_PURGE_MADVISE_DONTNEED_ZEROS  " >>confdefs.h
+
+
+printf "%s\n" "#define JEMALLOC_HAS_ALLOCA_H  " >>confdefs.h
+
+
+printf "%s\n" "#define JEMALLOC_PROC_SYS_VM_OVERCOMMIT_MEMORY  " >>confdefs.h
+
+
+printf "%s\n" "#define JEMALLOC_THREADED_INIT  " >>confdefs.h
+
+
+printf "%s\n" "#define JEMALLOC_C11_ATOMICS  " >>confdefs.h
+
+	force_tls="0"
+	if test "${LG_SIZEOF_PTR}" = "3"; then
+	  default_retain="1"
+	fi
+	zero_realloc_default_free="1"
+	;;
+  *-*-linux*)
+		T_APPEND_V=-D_GNU_SOURCE
+  if test "x${CPPFLAGS}" = "x" -o "x${T_APPEND_V}" = "x" ; then
+  CPPFLAGS="${CPPFLAGS}${T_APPEND_V}"
+else
+  CPPFLAGS="${CPPFLAGS} ${T_APPEND_V}"
+fi
+
+
+	abi="elf"
+	glibc="1"
+
+printf "%s\n" "#define JEMALLOC_PURGE_MADVISE_DONTNEED_ZEROS  " >>confdefs.h
+
+
+printf "%s\n" "#define JEMALLOC_HAS_ALLOCA_H  " >>confdefs.h
+
+
+printf "%s\n" "#define JEMALLOC_PROC_SYS_VM_OVERCOMMIT_MEMORY  " >>confdefs.h
+
+
+printf "%s\n" "#define JEMALLOC_THREADED_INIT  " >>confdefs.h
+
+
+printf "%s\n" "#define JEMALLOC_USE_CXX_THROW  " >>confdefs.h
+
+	if test "${LG_SIZEOF_PTR}" = "3"; then
+	  default_retain="1"
+	fi
+	zero_realloc_default_free="1"
+	;;
+  *-*-kfreebsd*)
+		T_APPEND_V=-D_GNU_SOURCE
+  if test "x${CPPFLAGS}" = "x" -o "x${T_APPEND_V}" = "x" ; then
+  CPPFLAGS="${CPPFLAGS}${T_APPEND_V}"
+else
+  CPPFLAGS="${CPPFLAGS} ${T_APPEND_V}"
+fi
+
+
+	abi="elf"
+
+printf "%s\n" "#define JEMALLOC_HAS_ALLOCA_H  " >>confdefs.h
+
+
+printf "%s\n" "#define JEMALLOC_SYSCTL_VM_OVERCOMMIT  " >>confdefs.h
+
+
+printf "%s\n" "#define JEMALLOC_THREADED_INIT  " >>confdefs.h
+
+
+printf "%s\n" "#define JEMALLOC_USE_CXX_THROW  " >>confdefs.h
+
+	;;
+  *-*-netbsd*)
+	{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking ABI" >&5
+printf %s "checking ABI... " >&6; }
+        cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#ifdef __ELF__
+/* ELF */
+#else
+#error aout
+#endif
+
+int
+main (void)
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  abi="elf"
+else $as_nop
+  abi="aout"
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+	{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $abi" >&5
+printf "%s\n" "$abi" >&6; }
+	;;
+  *-*-solaris2*)
+	abi="elf"
+	RPATH='-Wl,-R,$(1)'
+		T_APPEND_V=-D_POSIX_PTHREAD_SEMANTICS
+  if test "x${CPPFLAGS}" = "x" -o "x${T_APPEND_V}" = "x" ; then
+  CPPFLAGS="${CPPFLAGS}${T_APPEND_V}"
+else
+  CPPFLAGS="${CPPFLAGS} ${T_APPEND_V}"
+fi
+
+
+	T_APPEND_V=-lposix4 -lsocket -lnsl
+  if test "x${LIBS}" = "x" -o "x${T_APPEND_V}" = "x" ; then
+  LIBS="${LIBS}${T_APPEND_V}"
+else
+  LIBS="${LIBS} ${T_APPEND_V}"
+fi
+
+
+	;;
+  *-ibm-aix*)
+	if test "${LG_SIZEOF_PTR}" = "3"; then
+	  	  LD_PRELOAD_VAR="LDR_PRELOAD64"
+	else
+	  	  LD_PRELOAD_VAR="LDR_PRELOAD"
+	fi
+	abi="xcoff"
+	;;
+  *-*-mingw* | *-*-cygwin*)
+	abi="pecoff"
+	force_tls="0"
+	maps_coalesce="0"
+	RPATH=""
+	so="dll"
+	if test "x$je_cv_msvc" = "xyes" ; then
+	  importlib="lib"
+	  DSO_LDFLAGS="-LD"
+	  EXTRA_LDFLAGS="-link -DEBUG"
+	  CTARGET='-Fo$@'
+	  LDTARGET='-Fe$@'
+	  AR='lib'
+	  ARFLAGS='-nologo -out:'
+	  AROUT='$@'
+	  CC_MM=
+        else
+	  importlib="${so}"
+	  DSO_LDFLAGS="-shared"
+	  link_whole_archive="1"
+	fi
+	case "${host}" in
+	  *-*-cygwin*)
+	    DUMP_SYMS="dumpbin /SYMBOLS"
+	    ;;
+	  *)
+	    ;;
+	esac
+	a="lib"
+	libprefix=""
+	SOREV="${so}"
+	PIC_CFLAGS=""
+	if test "${LG_SIZEOF_PTR}" = "3"; then
+	  default_retain="1"
+	fi
+	zero_realloc_default_free="1"
+	;;
+  *-*-nto-qnx)
+	abi="elf"
+  force_tls="0"
+
+printf "%s\n" "#define JEMALLOC_HAS_ALLOCA_H  " >>confdefs.h
+
+	;;
+  *)
+	{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: Unsupported operating system: ${host}" >&5
+printf "%s\n" "Unsupported operating system: ${host}" >&6; }
+	abi="elf"
+	;;
+esac
+
+JEMALLOC_USABLE_SIZE_CONST=const
+       for ac_header in malloc.h
+do :
+  ac_fn_c_check_header_compile "$LINENO" "malloc.h" "ac_cv_header_malloc_h" "$ac_includes_default"
+if test "x$ac_cv_header_malloc_h" = xyes
+then :
+  printf "%s\n" "#define HAVE_MALLOC_H 1" >>confdefs.h
+
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether malloc_usable_size definition can use const argument" >&5
+printf %s "checking whether malloc_usable_size definition can use const argument... " >&6; }
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <malloc.h>
+     #include <stddef.h>
+    size_t malloc_usable_size(const void *ptr);
+
+int
+main (void)
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+
+                { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+printf "%s\n" "yes" >&6; }
+
+else $as_nop
+
+                JEMALLOC_USABLE_SIZE_CONST=
+                { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
+
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+
+fi
+
+done
+
+printf "%s\n" "#define JEMALLOC_USABLE_SIZE_CONST $JEMALLOC_USABLE_SIZE_CONST" >>confdefs.h
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for library containing log" >&5
+printf %s "checking for library containing log... " >&6; }
+if test ${ac_cv_search_log+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  ac_func_search_save_LIBS=$LIBS
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+/* Override any GCC internal prototype to avoid an error.
+   Use char because int might match the return type of a GCC
+   builtin and then its argument prototype would still apply.  */
+char log ();
+int
+main (void)
+{
+return log ();
+  ;
+  return 0;
+}
+_ACEOF
+for ac_lib in '' m
+do
+  if test -z "$ac_lib"; then
+    ac_res="none required"
+  else
+    ac_res=-l$ac_lib
+    LIBS="-l$ac_lib  $ac_func_search_save_LIBS"
+  fi
+  if ac_fn_c_try_link "$LINENO"
+then :
+  ac_cv_search_log=$ac_res
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
+    conftest$ac_exeext
+  if test ${ac_cv_search_log+y}
+then :
+  break
+fi
+done
+if test ${ac_cv_search_log+y}
+then :
+
+else $as_nop
+  ac_cv_search_log=no
+fi
+rm conftest.$ac_ext
+LIBS=$ac_func_search_save_LIBS
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_search_log" >&5
+printf "%s\n" "$ac_cv_search_log" >&6; }
+ac_res=$ac_cv_search_log
+if test "$ac_res" != no
+then :
+  test "$ac_res" = "none required" || LIBS="$ac_res $LIBS"
+
+else $as_nop
+  as_fn_error $? "Missing math functions" "$LINENO" 5
+fi
+
+if test "x$ac_cv_search_log" != "xnone required" ; then
+  LM="$ac_cv_search_log"
+else
+  LM=
+fi
+
+
+
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether __attribute__ syntax is compilable" >&5
+printf %s "checking whether __attribute__ syntax is compilable... " >&6; }
+if test ${je_cv_attribute+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+static __attribute__((unused)) void foo(void){}
+int
+main (void)
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"
+then :
+  je_cv_attribute=yes
+else $as_nop
+  je_cv_attribute=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
+    conftest$ac_exeext conftest.$ac_ext
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $je_cv_attribute" >&5
+printf "%s\n" "$je_cv_attribute" >&6; }
+
+if test "x${je_cv_attribute}" = "xyes" ; then
+
+printf "%s\n" "#define JEMALLOC_HAVE_ATTR  " >>confdefs.h
+
+  if test "x${GCC}" = "xyes" -a "x${abi}" = "xelf"; then
+
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether compiler supports -fvisibility=hidden" >&5
+printf %s "checking whether compiler supports -fvisibility=hidden... " >&6; }
+T_CONFIGURE_CFLAGS="${CONFIGURE_CFLAGS}"
+T_APPEND_V=-fvisibility=hidden
+  if test "x${CONFIGURE_CFLAGS}" = "x" -o "x${T_APPEND_V}" = "x" ; then
+  CONFIGURE_CFLAGS="${CONFIGURE_CFLAGS}${T_APPEND_V}"
+else
+  CONFIGURE_CFLAGS="${CONFIGURE_CFLAGS} ${T_APPEND_V}"
+fi
+
+
+if test "x${CONFIGURE_CFLAGS}" = "x" -o "x${SPECIFIED_CFLAGS}" = "x" ; then
+  CFLAGS="${CONFIGURE_CFLAGS}${SPECIFIED_CFLAGS}"
+else
+  CFLAGS="${CONFIGURE_CFLAGS} ${SPECIFIED_CFLAGS}"
+fi
+
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+
+int
+main (void)
+{
+
+    return 0;
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  je_cv_cflags_added=-fvisibility=hidden
+              { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+printf "%s\n" "yes" >&6; }
+else $as_nop
+  je_cv_cflags_added=
+              { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
+              CONFIGURE_CFLAGS="${T_CONFIGURE_CFLAGS}"
+
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+if test "x${CONFIGURE_CFLAGS}" = "x" -o "x${SPECIFIED_CFLAGS}" = "x" ; then
+  CFLAGS="${CONFIGURE_CFLAGS}${SPECIFIED_CFLAGS}"
+else
+  CFLAGS="${CONFIGURE_CFLAGS} ${SPECIFIED_CFLAGS}"
+fi
+
+
+
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether compiler supports -fvisibility=hidden" >&5
+printf %s "checking whether compiler supports -fvisibility=hidden... " >&6; }
+T_CONFIGURE_CXXFLAGS="${CONFIGURE_CXXFLAGS}"
+T_APPEND_V=-fvisibility=hidden
+  if test "x${CONFIGURE_CXXFLAGS}" = "x" -o "x${T_APPEND_V}" = "x" ; then
+  CONFIGURE_CXXFLAGS="${CONFIGURE_CXXFLAGS}${T_APPEND_V}"
+else
+  CONFIGURE_CXXFLAGS="${CONFIGURE_CXXFLAGS} ${T_APPEND_V}"
+fi
+
+
+if test "x${CONFIGURE_CXXFLAGS}" = "x" -o "x${SPECIFIED_CXXFLAGS}" = "x" ; then
+  CXXFLAGS="${CONFIGURE_CXXFLAGS}${SPECIFIED_CXXFLAGS}"
+else
+  CXXFLAGS="${CONFIGURE_CXXFLAGS} ${SPECIFIED_CXXFLAGS}"
+fi
+
+ac_ext=cpp
+ac_cpp='$CXXCPP $CPPFLAGS'
+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
+
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+
+int
+main (void)
+{
+
+    return 0;
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_cxx_try_compile "$LINENO"
+then :
+  je_cv_cxxflags_added=-fvisibility=hidden
+              { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+printf "%s\n" "yes" >&6; }
+else $as_nop
+  je_cv_cxxflags_added=
+              { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
+              CONFIGURE_CXXFLAGS="${T_CONFIGURE_CXXFLAGS}"
+
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+if test "x${CONFIGURE_CXXFLAGS}" = "x" -o "x${SPECIFIED_CXXFLAGS}" = "x" ; then
+  CXXFLAGS="${CONFIGURE_CXXFLAGS}${SPECIFIED_CXXFLAGS}"
+else
+  CXXFLAGS="${CONFIGURE_CXXFLAGS} ${SPECIFIED_CXXFLAGS}"
+fi
+
+
+  fi
+fi
+SAVED_CONFIGURE_CFLAGS="${CONFIGURE_CFLAGS}"
+
+
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether compiler supports -Werror" >&5
+printf %s "checking whether compiler supports -Werror... " >&6; }
+T_CONFIGURE_CFLAGS="${CONFIGURE_CFLAGS}"
+T_APPEND_V=-Werror
+  if test "x${CONFIGURE_CFLAGS}" = "x" -o "x${T_APPEND_V}" = "x" ; then
+  CONFIGURE_CFLAGS="${CONFIGURE_CFLAGS}${T_APPEND_V}"
+else
+  CONFIGURE_CFLAGS="${CONFIGURE_CFLAGS} ${T_APPEND_V}"
+fi
+
+
+if test "x${CONFIGURE_CFLAGS}" = "x" -o "x${SPECIFIED_CFLAGS}" = "x" ; then
+  CFLAGS="${CONFIGURE_CFLAGS}${SPECIFIED_CFLAGS}"
+else
+  CFLAGS="${CONFIGURE_CFLAGS} ${SPECIFIED_CFLAGS}"
+fi
+
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+
+int
+main (void)
+{
+
+    return 0;
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  je_cv_cflags_added=-Werror
+              { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+printf "%s\n" "yes" >&6; }
+else $as_nop
+  je_cv_cflags_added=
+              { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
+              CONFIGURE_CFLAGS="${T_CONFIGURE_CFLAGS}"
+
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+if test "x${CONFIGURE_CFLAGS}" = "x" -o "x${SPECIFIED_CFLAGS}" = "x" ; then
+  CFLAGS="${CONFIGURE_CFLAGS}${SPECIFIED_CFLAGS}"
+else
+  CFLAGS="${CONFIGURE_CFLAGS} ${SPECIFIED_CFLAGS}"
+fi
+
+
+
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether compiler supports -herror_on_warning" >&5
+printf %s "checking whether compiler supports -herror_on_warning... " >&6; }
+T_CONFIGURE_CFLAGS="${CONFIGURE_CFLAGS}"
+T_APPEND_V=-herror_on_warning
+  if test "x${CONFIGURE_CFLAGS}" = "x" -o "x${T_APPEND_V}" = "x" ; then
+  CONFIGURE_CFLAGS="${CONFIGURE_CFLAGS}${T_APPEND_V}"
+else
+  CONFIGURE_CFLAGS="${CONFIGURE_CFLAGS} ${T_APPEND_V}"
+fi
+
+
+if test "x${CONFIGURE_CFLAGS}" = "x" -o "x${SPECIFIED_CFLAGS}" = "x" ; then
+  CFLAGS="${CONFIGURE_CFLAGS}${SPECIFIED_CFLAGS}"
+else
+  CFLAGS="${CONFIGURE_CFLAGS} ${SPECIFIED_CFLAGS}"
+fi
+
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+
+int
+main (void)
+{
+
+    return 0;
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  je_cv_cflags_added=-herror_on_warning
+              { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+printf "%s\n" "yes" >&6; }
+else $as_nop
+  je_cv_cflags_added=
+              { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
+              CONFIGURE_CFLAGS="${T_CONFIGURE_CFLAGS}"
+
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+if test "x${CONFIGURE_CFLAGS}" = "x" -o "x${SPECIFIED_CFLAGS}" = "x" ; then
+  CFLAGS="${CONFIGURE_CFLAGS}${SPECIFIED_CFLAGS}"
+else
+  CFLAGS="${CONFIGURE_CFLAGS} ${SPECIFIED_CFLAGS}"
+fi
+
+
+
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether tls_model attribute is compilable" >&5
+printf %s "checking whether tls_model attribute is compilable... " >&6; }
+if test ${je_cv_tls_model+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+int
+main (void)
+{
+static __thread int
+               __attribute__((tls_model("initial-exec"), unused)) foo;
+               foo = 0;
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"
+then :
+  je_cv_tls_model=yes
+else $as_nop
+  je_cv_tls_model=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
+    conftest$ac_exeext conftest.$ac_ext
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $je_cv_tls_model" >&5
+printf "%s\n" "$je_cv_tls_model" >&6; }
+
+CONFIGURE_CFLAGS="${SAVED_CONFIGURE_CFLAGS}"
+if test "x${CONFIGURE_CFLAGS}" = "x" -o "x${SPECIFIED_CFLAGS}" = "x" ; then
+  CFLAGS="${CONFIGURE_CFLAGS}${SPECIFIED_CFLAGS}"
+else
+  CFLAGS="${CONFIGURE_CFLAGS} ${SPECIFIED_CFLAGS}"
+fi
+
+
+
+SAVED_CONFIGURE_CFLAGS="${CONFIGURE_CFLAGS}"
+
+
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether compiler supports -Werror" >&5
+printf %s "checking whether compiler supports -Werror... " >&6; }
+T_CONFIGURE_CFLAGS="${CONFIGURE_CFLAGS}"
+T_APPEND_V=-Werror
+  if test "x${CONFIGURE_CFLAGS}" = "x" -o "x${T_APPEND_V}" = "x" ; then
+  CONFIGURE_CFLAGS="${CONFIGURE_CFLAGS}${T_APPEND_V}"
+else
+  CONFIGURE_CFLAGS="${CONFIGURE_CFLAGS} ${T_APPEND_V}"
+fi
+
+
+if test "x${CONFIGURE_CFLAGS}" = "x" -o "x${SPECIFIED_CFLAGS}" = "x" ; then
+  CFLAGS="${CONFIGURE_CFLAGS}${SPECIFIED_CFLAGS}"
+else
+  CFLAGS="${CONFIGURE_CFLAGS} ${SPECIFIED_CFLAGS}"
+fi
+
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+
+int
+main (void)
+{
+
+    return 0;
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  je_cv_cflags_added=-Werror
+              { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+printf "%s\n" "yes" >&6; }
+else $as_nop
+  je_cv_cflags_added=
+              { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
+              CONFIGURE_CFLAGS="${T_CONFIGURE_CFLAGS}"
+
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+if test "x${CONFIGURE_CFLAGS}" = "x" -o "x${SPECIFIED_CFLAGS}" = "x" ; then
+  CFLAGS="${CONFIGURE_CFLAGS}${SPECIFIED_CFLAGS}"
+else
+  CFLAGS="${CONFIGURE_CFLAGS} ${SPECIFIED_CFLAGS}"
+fi
+
+
+
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether compiler supports -herror_on_warning" >&5
+printf %s "checking whether compiler supports -herror_on_warning... " >&6; }
+T_CONFIGURE_CFLAGS="${CONFIGURE_CFLAGS}"
+T_APPEND_V=-herror_on_warning
+  if test "x${CONFIGURE_CFLAGS}" = "x" -o "x${T_APPEND_V}" = "x" ; then
+  CONFIGURE_CFLAGS="${CONFIGURE_CFLAGS}${T_APPEND_V}"
+else
+  CONFIGURE_CFLAGS="${CONFIGURE_CFLAGS} ${T_APPEND_V}"
+fi
+
+
+if test "x${CONFIGURE_CFLAGS}" = "x" -o "x${SPECIFIED_CFLAGS}" = "x" ; then
+  CFLAGS="${CONFIGURE_CFLAGS}${SPECIFIED_CFLAGS}"
+else
+  CFLAGS="${CONFIGURE_CFLAGS} ${SPECIFIED_CFLAGS}"
+fi
+
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+
+int
+main (void)
+{
+
+    return 0;
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  je_cv_cflags_added=-herror_on_warning
+              { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+printf "%s\n" "yes" >&6; }
+else $as_nop
+  je_cv_cflags_added=
+              { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
+              CONFIGURE_CFLAGS="${T_CONFIGURE_CFLAGS}"
+
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+if test "x${CONFIGURE_CFLAGS}" = "x" -o "x${SPECIFIED_CFLAGS}" = "x" ; then
+  CFLAGS="${CONFIGURE_CFLAGS}${SPECIFIED_CFLAGS}"
+else
+  CFLAGS="${CONFIGURE_CFLAGS} ${SPECIFIED_CFLAGS}"
+fi
+
+
+
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether alloc_size attribute is compilable" >&5
+printf %s "checking whether alloc_size attribute is compilable... " >&6; }
+if test ${je_cv_alloc_size+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <stdlib.h>
+int
+main (void)
+{
+void *foo(size_t size) __attribute__((alloc_size(1)));
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"
+then :
+  je_cv_alloc_size=yes
+else $as_nop
+  je_cv_alloc_size=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
+    conftest$ac_exeext conftest.$ac_ext
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $je_cv_alloc_size" >&5
+printf "%s\n" "$je_cv_alloc_size" >&6; }
+
+CONFIGURE_CFLAGS="${SAVED_CONFIGURE_CFLAGS}"
+if test "x${CONFIGURE_CFLAGS}" = "x" -o "x${SPECIFIED_CFLAGS}" = "x" ; then
+  CFLAGS="${CONFIGURE_CFLAGS}${SPECIFIED_CFLAGS}"
+else
+  CFLAGS="${CONFIGURE_CFLAGS} ${SPECIFIED_CFLAGS}"
+fi
+
+
+if test "x${je_cv_alloc_size}" = "xyes" ; then
+
+printf "%s\n" "#define JEMALLOC_HAVE_ATTR_ALLOC_SIZE  " >>confdefs.h
+
+fi
+SAVED_CONFIGURE_CFLAGS="${CONFIGURE_CFLAGS}"
+
+
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether compiler supports -Werror" >&5
+printf %s "checking whether compiler supports -Werror... " >&6; }
+T_CONFIGURE_CFLAGS="${CONFIGURE_CFLAGS}"
+T_APPEND_V=-Werror
+  if test "x${CONFIGURE_CFLAGS}" = "x" -o "x${T_APPEND_V}" = "x" ; then
+  CONFIGURE_CFLAGS="${CONFIGURE_CFLAGS}${T_APPEND_V}"
+else
+  CONFIGURE_CFLAGS="${CONFIGURE_CFLAGS} ${T_APPEND_V}"
+fi
+
+
+if test "x${CONFIGURE_CFLAGS}" = "x" -o "x${SPECIFIED_CFLAGS}" = "x" ; then
+  CFLAGS="${CONFIGURE_CFLAGS}${SPECIFIED_CFLAGS}"
+else
+  CFLAGS="${CONFIGURE_CFLAGS} ${SPECIFIED_CFLAGS}"
+fi
+
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+
+int
+main (void)
+{
+
+    return 0;
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  je_cv_cflags_added=-Werror
+              { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+printf "%s\n" "yes" >&6; }
+else $as_nop
+  je_cv_cflags_added=
+              { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
+              CONFIGURE_CFLAGS="${T_CONFIGURE_CFLAGS}"
+
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+if test "x${CONFIGURE_CFLAGS}" = "x" -o "x${SPECIFIED_CFLAGS}" = "x" ; then
+  CFLAGS="${CONFIGURE_CFLAGS}${SPECIFIED_CFLAGS}"
+else
+  CFLAGS="${CONFIGURE_CFLAGS} ${SPECIFIED_CFLAGS}"
+fi
+
+
+
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether compiler supports -herror_on_warning" >&5
+printf %s "checking whether compiler supports -herror_on_warning... " >&6; }
+T_CONFIGURE_CFLAGS="${CONFIGURE_CFLAGS}"
+T_APPEND_V=-herror_on_warning
+  if test "x${CONFIGURE_CFLAGS}" = "x" -o "x${T_APPEND_V}" = "x" ; then
+  CONFIGURE_CFLAGS="${CONFIGURE_CFLAGS}${T_APPEND_V}"
+else
+  CONFIGURE_CFLAGS="${CONFIGURE_CFLAGS} ${T_APPEND_V}"
+fi
+
+
+if test "x${CONFIGURE_CFLAGS}" = "x" -o "x${SPECIFIED_CFLAGS}" = "x" ; then
+  CFLAGS="${CONFIGURE_CFLAGS}${SPECIFIED_CFLAGS}"
+else
+  CFLAGS="${CONFIGURE_CFLAGS} ${SPECIFIED_CFLAGS}"
+fi
+
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+
+int
+main (void)
+{
+
+    return 0;
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  je_cv_cflags_added=-herror_on_warning
+              { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+printf "%s\n" "yes" >&6; }
+else $as_nop
+  je_cv_cflags_added=
+              { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
+              CONFIGURE_CFLAGS="${T_CONFIGURE_CFLAGS}"
+
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+if test "x${CONFIGURE_CFLAGS}" = "x" -o "x${SPECIFIED_CFLAGS}" = "x" ; then
+  CFLAGS="${CONFIGURE_CFLAGS}${SPECIFIED_CFLAGS}"
+else
+  CFLAGS="${CONFIGURE_CFLAGS} ${SPECIFIED_CFLAGS}"
+fi
+
+
+
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether format(gnu_printf, ...) attribute is compilable" >&5
+printf %s "checking whether format(gnu_printf, ...) attribute is compilable... " >&6; }
+if test ${je_cv_format_gnu_printf+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <stdlib.h>
+int
+main (void)
+{
+void *foo(const char *format, ...) __attribute__((format(gnu_printf, 1, 2)));
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"
+then :
+  je_cv_format_gnu_printf=yes
+else $as_nop
+  je_cv_format_gnu_printf=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
+    conftest$ac_exeext conftest.$ac_ext
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $je_cv_format_gnu_printf" >&5
+printf "%s\n" "$je_cv_format_gnu_printf" >&6; }
+
+CONFIGURE_CFLAGS="${SAVED_CONFIGURE_CFLAGS}"
+if test "x${CONFIGURE_CFLAGS}" = "x" -o "x${SPECIFIED_CFLAGS}" = "x" ; then
+  CFLAGS="${CONFIGURE_CFLAGS}${SPECIFIED_CFLAGS}"
+else
+  CFLAGS="${CONFIGURE_CFLAGS} ${SPECIFIED_CFLAGS}"
+fi
+
+
+if test "x${je_cv_format_gnu_printf}" = "xyes" ; then
+
+printf "%s\n" "#define JEMALLOC_HAVE_ATTR_FORMAT_GNU_PRINTF  " >>confdefs.h
+
+fi
+SAVED_CONFIGURE_CFLAGS="${CONFIGURE_CFLAGS}"
+
+
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether compiler supports -Werror" >&5
+printf %s "checking whether compiler supports -Werror... " >&6; }
+T_CONFIGURE_CFLAGS="${CONFIGURE_CFLAGS}"
+T_APPEND_V=-Werror
+  if test "x${CONFIGURE_CFLAGS}" = "x" -o "x${T_APPEND_V}" = "x" ; then
+  CONFIGURE_CFLAGS="${CONFIGURE_CFLAGS}${T_APPEND_V}"
+else
+  CONFIGURE_CFLAGS="${CONFIGURE_CFLAGS} ${T_APPEND_V}"
+fi
+
+
+if test "x${CONFIGURE_CFLAGS}" = "x" -o "x${SPECIFIED_CFLAGS}" = "x" ; then
+  CFLAGS="${CONFIGURE_CFLAGS}${SPECIFIED_CFLAGS}"
+else
+  CFLAGS="${CONFIGURE_CFLAGS} ${SPECIFIED_CFLAGS}"
+fi
+
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+
+int
+main (void)
+{
+
+    return 0;
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  je_cv_cflags_added=-Werror
+              { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+printf "%s\n" "yes" >&6; }
+else $as_nop
+  je_cv_cflags_added=
+              { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
+              CONFIGURE_CFLAGS="${T_CONFIGURE_CFLAGS}"
+
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+if test "x${CONFIGURE_CFLAGS}" = "x" -o "x${SPECIFIED_CFLAGS}" = "x" ; then
+  CFLAGS="${CONFIGURE_CFLAGS}${SPECIFIED_CFLAGS}"
+else
+  CFLAGS="${CONFIGURE_CFLAGS} ${SPECIFIED_CFLAGS}"
+fi
+
+
+
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether compiler supports -herror_on_warning" >&5
+printf %s "checking whether compiler supports -herror_on_warning... " >&6; }
+T_CONFIGURE_CFLAGS="${CONFIGURE_CFLAGS}"
+T_APPEND_V=-herror_on_warning
+  if test "x${CONFIGURE_CFLAGS}" = "x" -o "x${T_APPEND_V}" = "x" ; then
+  CONFIGURE_CFLAGS="${CONFIGURE_CFLAGS}${T_APPEND_V}"
+else
+  CONFIGURE_CFLAGS="${CONFIGURE_CFLAGS} ${T_APPEND_V}"
+fi
+
+
+if test "x${CONFIGURE_CFLAGS}" = "x" -o "x${SPECIFIED_CFLAGS}" = "x" ; then
+  CFLAGS="${CONFIGURE_CFLAGS}${SPECIFIED_CFLAGS}"
+else
+  CFLAGS="${CONFIGURE_CFLAGS} ${SPECIFIED_CFLAGS}"
+fi
+
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+
+int
+main (void)
+{
+
+    return 0;
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  je_cv_cflags_added=-herror_on_warning
+              { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+printf "%s\n" "yes" >&6; }
+else $as_nop
+  je_cv_cflags_added=
+              { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
+              CONFIGURE_CFLAGS="${T_CONFIGURE_CFLAGS}"
+
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+if test "x${CONFIGURE_CFLAGS}" = "x" -o "x${SPECIFIED_CFLAGS}" = "x" ; then
+  CFLAGS="${CONFIGURE_CFLAGS}${SPECIFIED_CFLAGS}"
+else
+  CFLAGS="${CONFIGURE_CFLAGS} ${SPECIFIED_CFLAGS}"
+fi
+
+
+
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether format(printf, ...) attribute is compilable" >&5
+printf %s "checking whether format(printf, ...) attribute is compilable... " >&6; }
+if test ${je_cv_format_printf+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <stdlib.h>
+int
+main (void)
+{
+void *foo(const char *format, ...) __attribute__((format(printf, 1, 2)));
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"
+then :
+  je_cv_format_printf=yes
+else $as_nop
+  je_cv_format_printf=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
+    conftest$ac_exeext conftest.$ac_ext
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $je_cv_format_printf" >&5
+printf "%s\n" "$je_cv_format_printf" >&6; }
+
+CONFIGURE_CFLAGS="${SAVED_CONFIGURE_CFLAGS}"
+if test "x${CONFIGURE_CFLAGS}" = "x" -o "x${SPECIFIED_CFLAGS}" = "x" ; then
+  CFLAGS="${CONFIGURE_CFLAGS}${SPECIFIED_CFLAGS}"
+else
+  CFLAGS="${CONFIGURE_CFLAGS} ${SPECIFIED_CFLAGS}"
+fi
+
+
+if test "x${je_cv_format_printf}" = "xyes" ; then
+
+printf "%s\n" "#define JEMALLOC_HAVE_ATTR_FORMAT_PRINTF  " >>confdefs.h
+
+fi
+
+SAVED_CONFIGURE_CFLAGS="${CONFIGURE_CFLAGS}"
+
+
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether compiler supports -Werror" >&5
+printf %s "checking whether compiler supports -Werror... " >&6; }
+T_CONFIGURE_CFLAGS="${CONFIGURE_CFLAGS}"
+T_APPEND_V=-Werror
+  if test "x${CONFIGURE_CFLAGS}" = "x" -o "x${T_APPEND_V}" = "x" ; then
+  CONFIGURE_CFLAGS="${CONFIGURE_CFLAGS}${T_APPEND_V}"
+else
+  CONFIGURE_CFLAGS="${CONFIGURE_CFLAGS} ${T_APPEND_V}"
+fi
+
+
+if test "x${CONFIGURE_CFLAGS}" = "x" -o "x${SPECIFIED_CFLAGS}" = "x" ; then
+  CFLAGS="${CONFIGURE_CFLAGS}${SPECIFIED_CFLAGS}"
+else
+  CFLAGS="${CONFIGURE_CFLAGS} ${SPECIFIED_CFLAGS}"
+fi
+
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+
+int
+main (void)
+{
+
+    return 0;
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  je_cv_cflags_added=-Werror
+              { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+printf "%s\n" "yes" >&6; }
+else $as_nop
+  je_cv_cflags_added=
+              { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
+              CONFIGURE_CFLAGS="${T_CONFIGURE_CFLAGS}"
+
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+if test "x${CONFIGURE_CFLAGS}" = "x" -o "x${SPECIFIED_CFLAGS}" = "x" ; then
+  CFLAGS="${CONFIGURE_CFLAGS}${SPECIFIED_CFLAGS}"
+else
+  CFLAGS="${CONFIGURE_CFLAGS} ${SPECIFIED_CFLAGS}"
+fi
+
+
+
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether compiler supports -herror_on_warning" >&5
+printf %s "checking whether compiler supports -herror_on_warning... " >&6; }
+T_CONFIGURE_CFLAGS="${CONFIGURE_CFLAGS}"
+T_APPEND_V=-herror_on_warning
+  if test "x${CONFIGURE_CFLAGS}" = "x" -o "x${T_APPEND_V}" = "x" ; then
+  CONFIGURE_CFLAGS="${CONFIGURE_CFLAGS}${T_APPEND_V}"
+else
+  CONFIGURE_CFLAGS="${CONFIGURE_CFLAGS} ${T_APPEND_V}"
+fi
+
+
+if test "x${CONFIGURE_CFLAGS}" = "x" -o "x${SPECIFIED_CFLAGS}" = "x" ; then
+  CFLAGS="${CONFIGURE_CFLAGS}${SPECIFIED_CFLAGS}"
+else
+  CFLAGS="${CONFIGURE_CFLAGS} ${SPECIFIED_CFLAGS}"
+fi
+
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+
+int
+main (void)
+{
+
+    return 0;
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  je_cv_cflags_added=-herror_on_warning
+              { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+printf "%s\n" "yes" >&6; }
+else $as_nop
+  je_cv_cflags_added=
+              { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
+              CONFIGURE_CFLAGS="${T_CONFIGURE_CFLAGS}"
+
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+if test "x${CONFIGURE_CFLAGS}" = "x" -o "x${SPECIFIED_CFLAGS}" = "x" ; then
+  CFLAGS="${CONFIGURE_CFLAGS}${SPECIFIED_CFLAGS}"
+else
+  CFLAGS="${CONFIGURE_CFLAGS} ${SPECIFIED_CFLAGS}"
+fi
+
+
+
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether format(printf, ...) attribute is compilable" >&5
+printf %s "checking whether format(printf, ...) attribute is compilable... " >&6; }
+if test ${je_cv_format_arg+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <stdlib.h>
+int
+main (void)
+{
+const char * __attribute__((__format_arg__(1))) foo(const char *format);
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"
+then :
+  je_cv_format_arg=yes
+else $as_nop
+  je_cv_format_arg=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
+    conftest$ac_exeext conftest.$ac_ext
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $je_cv_format_arg" >&5
+printf "%s\n" "$je_cv_format_arg" >&6; }
+
+CONFIGURE_CFLAGS="${SAVED_CONFIGURE_CFLAGS}"
+if test "x${CONFIGURE_CFLAGS}" = "x" -o "x${SPECIFIED_CFLAGS}" = "x" ; then
+  CFLAGS="${CONFIGURE_CFLAGS}${SPECIFIED_CFLAGS}"
+else
+  CFLAGS="${CONFIGURE_CFLAGS} ${SPECIFIED_CFLAGS}"
+fi
+
+
+if test "x${je_cv_format_arg}" = "xyes" ; then
+
+printf "%s\n" "#define JEMALLOC_HAVE_ATTR_FORMAT_ARG  " >>confdefs.h
+
+fi
+
+SAVED_CONFIGURE_CFLAGS="${CONFIGURE_CFLAGS}"
+
+
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether compiler supports -Wimplicit-fallthrough" >&5
+printf %s "checking whether compiler supports -Wimplicit-fallthrough... " >&6; }
+T_CONFIGURE_CFLAGS="${CONFIGURE_CFLAGS}"
+T_APPEND_V=-Wimplicit-fallthrough
+  if test "x${CONFIGURE_CFLAGS}" = "x" -o "x${T_APPEND_V}" = "x" ; then
+  CONFIGURE_CFLAGS="${CONFIGURE_CFLAGS}${T_APPEND_V}"
+else
+  CONFIGURE_CFLAGS="${CONFIGURE_CFLAGS} ${T_APPEND_V}"
+fi
+
+
+if test "x${CONFIGURE_CFLAGS}" = "x" -o "x${SPECIFIED_CFLAGS}" = "x" ; then
+  CFLAGS="${CONFIGURE_CFLAGS}${SPECIFIED_CFLAGS}"
+else
+  CFLAGS="${CONFIGURE_CFLAGS} ${SPECIFIED_CFLAGS}"
+fi
+
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+
+int
+main (void)
+{
+
+    return 0;
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  je_cv_cflags_added=-Wimplicit-fallthrough
+              { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+printf "%s\n" "yes" >&6; }
+else $as_nop
+  je_cv_cflags_added=
+              { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
+              CONFIGURE_CFLAGS="${T_CONFIGURE_CFLAGS}"
+
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+if test "x${CONFIGURE_CFLAGS}" = "x" -o "x${SPECIFIED_CFLAGS}" = "x" ; then
+  CFLAGS="${CONFIGURE_CFLAGS}${SPECIFIED_CFLAGS}"
+else
+  CFLAGS="${CONFIGURE_CFLAGS} ${SPECIFIED_CFLAGS}"
+fi
+
+
+
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether fallthrough attribute is compilable" >&5
+printf %s "checking whether fallthrough attribute is compilable... " >&6; }
+if test ${je_cv_fallthrough+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#if !__has_attribute(fallthrough)
+               #error "foo"
+               #endif
+int
+main (void)
+{
+int x = 0;
+               switch (x) {
+               case 0: __attribute__((__fallthrough__));
+               case 1: return 1;
+               }
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"
+then :
+  je_cv_fallthrough=yes
+else $as_nop
+  je_cv_fallthrough=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
+    conftest$ac_exeext conftest.$ac_ext
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $je_cv_fallthrough" >&5
+printf "%s\n" "$je_cv_fallthrough" >&6; }
+
+CONFIGURE_CFLAGS="${SAVED_CONFIGURE_CFLAGS}"
+if test "x${CONFIGURE_CFLAGS}" = "x" -o "x${SPECIFIED_CFLAGS}" = "x" ; then
+  CFLAGS="${CONFIGURE_CFLAGS}${SPECIFIED_CFLAGS}"
+else
+  CFLAGS="${CONFIGURE_CFLAGS} ${SPECIFIED_CFLAGS}"
+fi
+
+
+if test "x${je_cv_fallthrough}" = "xyes" ; then
+
+printf "%s\n" "#define JEMALLOC_HAVE_ATTR_FALLTHROUGH  " >>confdefs.h
+
+
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether compiler supports -Wimplicit-fallthrough" >&5
+printf %s "checking whether compiler supports -Wimplicit-fallthrough... " >&6; }
+T_CONFIGURE_CFLAGS="${CONFIGURE_CFLAGS}"
+T_APPEND_V=-Wimplicit-fallthrough
+  if test "x${CONFIGURE_CFLAGS}" = "x" -o "x${T_APPEND_V}" = "x" ; then
+  CONFIGURE_CFLAGS="${CONFIGURE_CFLAGS}${T_APPEND_V}"
+else
+  CONFIGURE_CFLAGS="${CONFIGURE_CFLAGS} ${T_APPEND_V}"
+fi
+
+
+if test "x${CONFIGURE_CFLAGS}" = "x" -o "x${SPECIFIED_CFLAGS}" = "x" ; then
+  CFLAGS="${CONFIGURE_CFLAGS}${SPECIFIED_CFLAGS}"
+else
+  CFLAGS="${CONFIGURE_CFLAGS} ${SPECIFIED_CFLAGS}"
+fi
+
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+
+int
+main (void)
+{
+
+    return 0;
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  je_cv_cflags_added=-Wimplicit-fallthrough
+              { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+printf "%s\n" "yes" >&6; }
+else $as_nop
+  je_cv_cflags_added=
+              { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
+              CONFIGURE_CFLAGS="${T_CONFIGURE_CFLAGS}"
+
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+if test "x${CONFIGURE_CFLAGS}" = "x" -o "x${SPECIFIED_CFLAGS}" = "x" ; then
+  CFLAGS="${CONFIGURE_CFLAGS}${SPECIFIED_CFLAGS}"
+else
+  CFLAGS="${CONFIGURE_CFLAGS} ${SPECIFIED_CFLAGS}"
+fi
+
+
+
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether compiler supports -Wimplicit-fallthrough" >&5
+printf %s "checking whether compiler supports -Wimplicit-fallthrough... " >&6; }
+T_CONFIGURE_CXXFLAGS="${CONFIGURE_CXXFLAGS}"
+T_APPEND_V=-Wimplicit-fallthrough
+  if test "x${CONFIGURE_CXXFLAGS}" = "x" -o "x${T_APPEND_V}" = "x" ; then
+  CONFIGURE_CXXFLAGS="${CONFIGURE_CXXFLAGS}${T_APPEND_V}"
+else
+  CONFIGURE_CXXFLAGS="${CONFIGURE_CXXFLAGS} ${T_APPEND_V}"
+fi
+
+
+if test "x${CONFIGURE_CXXFLAGS}" = "x" -o "x${SPECIFIED_CXXFLAGS}" = "x" ; then
+  CXXFLAGS="${CONFIGURE_CXXFLAGS}${SPECIFIED_CXXFLAGS}"
+else
+  CXXFLAGS="${CONFIGURE_CXXFLAGS} ${SPECIFIED_CXXFLAGS}"
+fi
+
+ac_ext=cpp
+ac_cpp='$CXXCPP $CPPFLAGS'
+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
+
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+
+int
+main (void)
+{
+
+    return 0;
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_cxx_try_compile "$LINENO"
+then :
+  je_cv_cxxflags_added=-Wimplicit-fallthrough
+              { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+printf "%s\n" "yes" >&6; }
+else $as_nop
+  je_cv_cxxflags_added=
+              { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
+              CONFIGURE_CXXFLAGS="${T_CONFIGURE_CXXFLAGS}"
+
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+if test "x${CONFIGURE_CXXFLAGS}" = "x" -o "x${SPECIFIED_CXXFLAGS}" = "x" ; then
+  CXXFLAGS="${CONFIGURE_CXXFLAGS}${SPECIFIED_CXXFLAGS}"
+else
+  CXXFLAGS="${CONFIGURE_CXXFLAGS} ${SPECIFIED_CXXFLAGS}"
+fi
+
+
+fi
+
+SAVED_CONFIGURE_CFLAGS="${CONFIGURE_CFLAGS}"
+
+
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether compiler supports -Werror" >&5
+printf %s "checking whether compiler supports -Werror... " >&6; }
+T_CONFIGURE_CFLAGS="${CONFIGURE_CFLAGS}"
+T_APPEND_V=-Werror
+  if test "x${CONFIGURE_CFLAGS}" = "x" -o "x${T_APPEND_V}" = "x" ; then
+  CONFIGURE_CFLAGS="${CONFIGURE_CFLAGS}${T_APPEND_V}"
+else
+  CONFIGURE_CFLAGS="${CONFIGURE_CFLAGS} ${T_APPEND_V}"
+fi
+
+
+if test "x${CONFIGURE_CFLAGS}" = "x" -o "x${SPECIFIED_CFLAGS}" = "x" ; then
+  CFLAGS="${CONFIGURE_CFLAGS}${SPECIFIED_CFLAGS}"
+else
+  CFLAGS="${CONFIGURE_CFLAGS} ${SPECIFIED_CFLAGS}"
+fi
+
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+
+int
+main (void)
+{
+
+    return 0;
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  je_cv_cflags_added=-Werror
+              { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+printf "%s\n" "yes" >&6; }
+else $as_nop
+  je_cv_cflags_added=
+              { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
+              CONFIGURE_CFLAGS="${T_CONFIGURE_CFLAGS}"
+
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+if test "x${CONFIGURE_CFLAGS}" = "x" -o "x${SPECIFIED_CFLAGS}" = "x" ; then
+  CFLAGS="${CONFIGURE_CFLAGS}${SPECIFIED_CFLAGS}"
+else
+  CFLAGS="${CONFIGURE_CFLAGS} ${SPECIFIED_CFLAGS}"
+fi
+
+
+
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether compiler supports -herror_on_warning" >&5
+printf %s "checking whether compiler supports -herror_on_warning... " >&6; }
+T_CONFIGURE_CFLAGS="${CONFIGURE_CFLAGS}"
+T_APPEND_V=-herror_on_warning
+  if test "x${CONFIGURE_CFLAGS}" = "x" -o "x${T_APPEND_V}" = "x" ; then
+  CONFIGURE_CFLAGS="${CONFIGURE_CFLAGS}${T_APPEND_V}"
+else
+  CONFIGURE_CFLAGS="${CONFIGURE_CFLAGS} ${T_APPEND_V}"
+fi
+
+
+if test "x${CONFIGURE_CFLAGS}" = "x" -o "x${SPECIFIED_CFLAGS}" = "x" ; then
+  CFLAGS="${CONFIGURE_CFLAGS}${SPECIFIED_CFLAGS}"
+else
+  CFLAGS="${CONFIGURE_CFLAGS} ${SPECIFIED_CFLAGS}"
+fi
+
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+
+int
+main (void)
+{
+
+    return 0;
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  je_cv_cflags_added=-herror_on_warning
+              { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+printf "%s\n" "yes" >&6; }
+else $as_nop
+  je_cv_cflags_added=
+              { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
+              CONFIGURE_CFLAGS="${T_CONFIGURE_CFLAGS}"
+
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+if test "x${CONFIGURE_CFLAGS}" = "x" -o "x${SPECIFIED_CFLAGS}" = "x" ; then
+  CFLAGS="${CONFIGURE_CFLAGS}${SPECIFIED_CFLAGS}"
+else
+  CFLAGS="${CONFIGURE_CFLAGS} ${SPECIFIED_CFLAGS}"
+fi
+
+
+
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether cold attribute is compilable" >&5
+printf %s "checking whether cold attribute is compilable... " >&6; }
+if test ${je_cv_cold+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+int
+main (void)
+{
+__attribute__((__cold__)) void foo();
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"
+then :
+  je_cv_cold=yes
+else $as_nop
+  je_cv_cold=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
+    conftest$ac_exeext conftest.$ac_ext
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $je_cv_cold" >&5
+printf "%s\n" "$je_cv_cold" >&6; }
+
+CONFIGURE_CFLAGS="${SAVED_CONFIGURE_CFLAGS}"
+if test "x${CONFIGURE_CFLAGS}" = "x" -o "x${SPECIFIED_CFLAGS}" = "x" ; then
+  CFLAGS="${CONFIGURE_CFLAGS}${SPECIFIED_CFLAGS}"
+else
+  CFLAGS="${CONFIGURE_CFLAGS} ${SPECIFIED_CFLAGS}"
+fi
+
+
+if test "x${je_cv_cold}" = "xyes" ; then
+
+printf "%s\n" "#define JEMALLOC_HAVE_ATTR_COLD  " >>confdefs.h
+
+fi
+
+
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether vm_make_tag is compilable" >&5
+printf %s "checking whether vm_make_tag is compilable... " >&6; }
+if test ${je_cv_vm_make_tag+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <sys/mman.h>
+	       #include <mach/vm_statistics.h>
+int
+main (void)
+{
+void *p;
+	       p = mmap(0, 16, PROT_READ, MAP_ANON|MAP_PRIVATE, VM_MAKE_TAG(1), 0);
+	       munmap(p, 16);
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"
+then :
+  je_cv_vm_make_tag=yes
+else $as_nop
+  je_cv_vm_make_tag=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
+    conftest$ac_exeext conftest.$ac_ext
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $je_cv_vm_make_tag" >&5
+printf "%s\n" "$je_cv_vm_make_tag" >&6; }
+
+if test "x${je_cv_vm_make_tag}" = "xyes" ; then
+
+printf "%s\n" "#define JEMALLOC_HAVE_VM_MAKE_TAG  " >>confdefs.h
+
+fi
+
+
+# Check whether --with-rpath was given.
+if test ${with_rpath+y}
+then :
+  withval=$with_rpath; if test "x$with_rpath" = "xno" ; then
+  RPATH_EXTRA=
+else
+  RPATH_EXTRA="`echo $with_rpath | tr \":\" \" \"`"
+fi
+else $as_nop
+  RPATH_EXTRA=
+
+fi
+
+
+
+# Check whether --enable-autogen was given.
+if test ${enable_autogen+y}
+then :
+  enableval=$enable_autogen; if test "x$enable_autogen" = "xno" ; then
+  enable_autogen="0"
+else
+  enable_autogen="1"
+fi
+
+else $as_nop
+  enable_autogen="0"
+
+fi
+
+
+
+
+  # Find a good install program.  We prefer a C program (faster),
+# so one script is as good as another.  But avoid the broken or
+# incompatible versions:
+# SysV /etc/install, /usr/sbin/install
+# SunOS /usr/etc/install
+# IRIX /sbin/install
+# AIX /bin/install
+# AmigaOS /C/install, which installs bootblocks on floppy discs
+# AIX 4 /usr/bin/installbsd, which doesn't work without a -g flag
+# AFS /usr/afsws/bin/install, which mishandles nonexistent args
+# SVR4 /usr/ucb/install, which tries to use the nonexistent group "staff"
+# OS/2's system install, which has a completely different semantic
+# ./install, which can be erroneously created by make from ./install.sh.
+# Reject install programs that cannot install multiple files.
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for a BSD-compatible install" >&5
+printf %s "checking for a BSD-compatible install... " >&6; }
+if test -z "$INSTALL"; then
+if test ${ac_cv_path_install+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  case $as_dir in #(((
+    '') as_dir=./ ;;
+    */) ;;
+    *) as_dir=$as_dir/ ;;
+  esac
+    # Account for fact that we put trailing slashes in our PATH walk.
+case $as_dir in #((
+  ./ | /[cC]/* | \
+  /etc/* | /usr/sbin/* | /usr/etc/* | /sbin/* | /usr/afsws/bin/* | \
+  ?:[\\/]os2[\\/]install[\\/]* | ?:[\\/]OS2[\\/]INSTALL[\\/]* | \
+  /usr/ucb/* ) ;;
+  *)
+    # OSF1 and SCO ODT 3.0 have their own names for install.
+    # Don't use installbsd from OSF since it installs stuff as root
+    # by default.
+    for ac_prog in ginstall scoinst install; do
+      for ac_exec_ext in '' $ac_executable_extensions; do
+	if as_fn_executable_p "$as_dir$ac_prog$ac_exec_ext"; then
+	  if test $ac_prog = install &&
+	    grep dspmsg "$as_dir$ac_prog$ac_exec_ext" >/dev/null 2>&1; then
+	    # AIX install.  It has an incompatible calling convention.
+	    :
+	  elif test $ac_prog = install &&
+	    grep pwplus "$as_dir$ac_prog$ac_exec_ext" >/dev/null 2>&1; then
+	    # program-specific install script used by HP pwplus--don't use.
+	    :
+	  else
+	    rm -rf conftest.one conftest.two conftest.dir
+	    echo one > conftest.one
+	    echo two > conftest.two
+	    mkdir conftest.dir
+	    if "$as_dir$ac_prog$ac_exec_ext" -c conftest.one conftest.two "`pwd`/conftest.dir/" &&
+	      test -s conftest.one && test -s conftest.two &&
+	      test -s conftest.dir/conftest.one &&
+	      test -s conftest.dir/conftest.two
+	    then
+	      ac_cv_path_install="$as_dir$ac_prog$ac_exec_ext -c"
+	      break 3
+	    fi
+	  fi
+	fi
+      done
+    done
+    ;;
+esac
+
+  done
+IFS=$as_save_IFS
+
+rm -rf conftest.one conftest.two conftest.dir
+
+fi
+  if test ${ac_cv_path_install+y}; then
+    INSTALL=$ac_cv_path_install
+  else
+    # As a last resort, use the slow shell script.  Don't cache a
+    # value for INSTALL within a source directory, because that will
+    # break other packages using the cache if that directory is
+    # removed, or if the value is a relative name.
+    INSTALL=$ac_install_sh
+  fi
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $INSTALL" >&5
+printf "%s\n" "$INSTALL" >&6; }
+
+# Use test -z because SunOS4 sh mishandles braces in ${var-val}.
+# It thinks the first close brace ends the variable substitution.
+test -z "$INSTALL_PROGRAM" && INSTALL_PROGRAM='${INSTALL}'
+
+test -z "$INSTALL_SCRIPT" && INSTALL_SCRIPT='${INSTALL}'
+
+test -z "$INSTALL_DATA" && INSTALL_DATA='${INSTALL} -m 644'
+
+if test -n "$ac_tool_prefix"; then
+  # Extract the first word of "${ac_tool_prefix}ranlib", so it can be a program name with args.
+set dummy ${ac_tool_prefix}ranlib; ac_word=$2
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+printf %s "checking for $ac_word... " >&6; }
+if test ${ac_cv_prog_RANLIB+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  if test -n "$RANLIB"; then
+  ac_cv_prog_RANLIB="$RANLIB" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  case $as_dir in #(((
+    '') as_dir=./ ;;
+    */) ;;
+    *) as_dir=$as_dir/ ;;
+  esac
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if as_fn_executable_p "$as_dir$ac_word$ac_exec_ext"; then
+    ac_cv_prog_RANLIB="${ac_tool_prefix}ranlib"
+    printf "%s\n" "$as_me:${as_lineno-$LINENO}: found $as_dir$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+fi
+fi
+RANLIB=$ac_cv_prog_RANLIB
+if test -n "$RANLIB"; then
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $RANLIB" >&5
+printf "%s\n" "$RANLIB" >&6; }
+else
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
+fi
+
+
+fi
+if test -z "$ac_cv_prog_RANLIB"; then
+  ac_ct_RANLIB=$RANLIB
+  # Extract the first word of "ranlib", so it can be a program name with args.
+set dummy ranlib; ac_word=$2
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+printf %s "checking for $ac_word... " >&6; }
+if test ${ac_cv_prog_ac_ct_RANLIB+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  if test -n "$ac_ct_RANLIB"; then
+  ac_cv_prog_ac_ct_RANLIB="$ac_ct_RANLIB" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  case $as_dir in #(((
+    '') as_dir=./ ;;
+    */) ;;
+    *) as_dir=$as_dir/ ;;
+  esac
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if as_fn_executable_p "$as_dir$ac_word$ac_exec_ext"; then
+    ac_cv_prog_ac_ct_RANLIB="ranlib"
+    printf "%s\n" "$as_me:${as_lineno-$LINENO}: found $as_dir$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+fi
+fi
+ac_ct_RANLIB=$ac_cv_prog_ac_ct_RANLIB
+if test -n "$ac_ct_RANLIB"; then
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_ct_RANLIB" >&5
+printf "%s\n" "$ac_ct_RANLIB" >&6; }
+else
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
+fi
+
+  if test "x$ac_ct_RANLIB" = x; then
+    RANLIB=":"
+  else
+    case $cross_compiling:$ac_tool_warned in
+yes:)
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5
+printf "%s\n" "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;}
+ac_tool_warned=yes ;;
+esac
+    RANLIB=$ac_ct_RANLIB
+  fi
+else
+  RANLIB="$ac_cv_prog_RANLIB"
+fi
+
+# Extract the first word of "ld", so it can be a program name with args.
+set dummy ld; ac_word=$2
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+printf %s "checking for $ac_word... " >&6; }
+if test ${ac_cv_path_LD+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  case $LD in
+  [\\/]* | ?:[\\/]*)
+  ac_cv_path_LD="$LD" # Let the user override the test with a path.
+  ;;
+  *)
+  as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  case $as_dir in #(((
+    '') as_dir=./ ;;
+    */) ;;
+    *) as_dir=$as_dir/ ;;
+  esac
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if as_fn_executable_p "$as_dir$ac_word$ac_exec_ext"; then
+    ac_cv_path_LD="$as_dir$ac_word$ac_exec_ext"
+    printf "%s\n" "$as_me:${as_lineno-$LINENO}: found $as_dir$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+  test -z "$ac_cv_path_LD" && ac_cv_path_LD="false"
+  ;;
+esac
+fi
+LD=$ac_cv_path_LD
+if test -n "$LD"; then
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $LD" >&5
+printf "%s\n" "$LD" >&6; }
+else
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
+fi
+
+
+# Extract the first word of "autoconf", so it can be a program name with args.
+set dummy autoconf; ac_word=$2
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+printf %s "checking for $ac_word... " >&6; }
+if test ${ac_cv_path_AUTOCONF+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  case $AUTOCONF in
+  [\\/]* | ?:[\\/]*)
+  ac_cv_path_AUTOCONF="$AUTOCONF" # Let the user override the test with a path.
+  ;;
+  *)
+  as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  case $as_dir in #(((
+    '') as_dir=./ ;;
+    */) ;;
+    *) as_dir=$as_dir/ ;;
+  esac
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if as_fn_executable_p "$as_dir$ac_word$ac_exec_ext"; then
+    ac_cv_path_AUTOCONF="$as_dir$ac_word$ac_exec_ext"
+    printf "%s\n" "$as_me:${as_lineno-$LINENO}: found $as_dir$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+  test -z "$ac_cv_path_AUTOCONF" && ac_cv_path_AUTOCONF="false"
+  ;;
+esac
+fi
+AUTOCONF=$ac_cv_path_AUTOCONF
+if test -n "$AUTOCONF"; then
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $AUTOCONF" >&5
+printf "%s\n" "$AUTOCONF" >&6; }
+else
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
+fi
+
+
+
+# Check whether --enable-doc was given.
+if test ${enable_doc+y}
+then :
+  enableval=$enable_doc; if test "x$enable_doc" = "xno" ; then
+  enable_doc="0"
+else
+  enable_doc="1"
+fi
+
+else $as_nop
+  enable_doc="1"
+
+fi
+
+
+
+# Check whether --enable-shared was given.
+if test ${enable_shared+y}
+then :
+  enableval=$enable_shared; if test "x$enable_shared" = "xno" ; then
+  enable_shared="0"
+else
+  enable_shared="1"
+fi
+
+else $as_nop
+  enable_shared="1"
+
+fi
+
+
+
+# Check whether --enable-static was given.
+if test ${enable_static+y}
+then :
+  enableval=$enable_static; if test "x$enable_static" = "xno" ; then
+  enable_static="0"
+else
+  enable_static="1"
+fi
+
+else $as_nop
+  enable_static="1"
+
+fi
+
+
+
+if test "$enable_shared$enable_static" = "00" ; then
+  as_fn_error $? "Please enable one of shared or static builds" "$LINENO" 5
+fi
+
+
+# Check whether --with-mangling was given.
+if test ${with_mangling+y}
+then :
+  withval=$with_mangling; mangling_map="$with_mangling"
+else $as_nop
+  mangling_map=""
+fi
+
+
+
+# Check whether --with-jemalloc_prefix was given.
+if test ${with_jemalloc_prefix+y}
+then :
+  withval=$with_jemalloc_prefix; JEMALLOC_PREFIX="$with_jemalloc_prefix"
+else $as_nop
+  if test "x$abi" != "xmacho" -a "x$abi" != "xpecoff"; then
+  JEMALLOC_PREFIX=""
+else
+  JEMALLOC_PREFIX="je_"
+fi
+
+fi
+
+if test "x$JEMALLOC_PREFIX" = "x" ; then
+
+printf "%s\n" "#define JEMALLOC_IS_MALLOC  " >>confdefs.h
+
+else
+  JEMALLOC_CPREFIX=`echo ${JEMALLOC_PREFIX} | tr "a-z" "A-Z"`
+
+printf "%s\n" "#define JEMALLOC_PREFIX \"$JEMALLOC_PREFIX\"" >>confdefs.h
+
+
+printf "%s\n" "#define JEMALLOC_CPREFIX \"$JEMALLOC_CPREFIX\"" >>confdefs.h
+
+fi
+
+
+
+
+# Check whether --with-export was given.
+if test ${with_export+y}
+then :
+  withval=$with_export; if test "x$with_export" = "xno"; then
+
+printf "%s\n" "#define JEMALLOC_EXPORT /**/" >>confdefs.h
+
+fi
+
+fi
+
+
+public_syms="aligned_alloc calloc dallocx free mallctl mallctlbymib mallctlnametomib malloc malloc_conf malloc_conf_2_conf_harder malloc_message malloc_stats_print malloc_usable_size mallocx smallocx_${jemalloc_version_gid} nallocx posix_memalign rallocx realloc sallocx sdallocx xallocx"
+ac_fn_c_check_func "$LINENO" "memalign" "ac_cv_func_memalign"
+if test "x$ac_cv_func_memalign" = xyes
+then :
+
+printf "%s\n" "#define JEMALLOC_OVERRIDE_MEMALIGN  " >>confdefs.h
+
+	       public_syms="${public_syms} memalign"
+fi
+
+ac_fn_c_check_func "$LINENO" "valloc" "ac_cv_func_valloc"
+if test "x$ac_cv_func_valloc" = xyes
+then :
+
+printf "%s\n" "#define JEMALLOC_OVERRIDE_VALLOC  " >>confdefs.h
+
+	       public_syms="${public_syms} valloc"
+fi
+
+ac_fn_c_check_func "$LINENO" "malloc_size" "ac_cv_func_malloc_size"
+if test "x$ac_cv_func_malloc_size" = xyes
+then :
+
+printf "%s\n" "#define JEMALLOC_HAVE_MALLOC_SIZE  " >>confdefs.h
+
+	       public_syms="${public_syms} malloc_size"
+fi
+
+
+wrap_syms=
+if test "x${JEMALLOC_PREFIX}" = "x" ; then
+  ac_fn_c_check_func "$LINENO" "__libc_calloc" "ac_cv_func___libc_calloc"
+if test "x$ac_cv_func___libc_calloc" = xyes
+then :
+
+printf "%s\n" "#define JEMALLOC_OVERRIDE___LIBC_CALLOC  " >>confdefs.h
+
+		 wrap_syms="${wrap_syms} __libc_calloc"
+fi
+
+  ac_fn_c_check_func "$LINENO" "__libc_free" "ac_cv_func___libc_free"
+if test "x$ac_cv_func___libc_free" = xyes
+then :
+
+printf "%s\n" "#define JEMALLOC_OVERRIDE___LIBC_FREE  " >>confdefs.h
+
+		 wrap_syms="${wrap_syms} __libc_free"
+fi
+
+  ac_fn_c_check_func "$LINENO" "__libc_malloc" "ac_cv_func___libc_malloc"
+if test "x$ac_cv_func___libc_malloc" = xyes
+then :
+
+printf "%s\n" "#define JEMALLOC_OVERRIDE___LIBC_MALLOC  " >>confdefs.h
+
+		 wrap_syms="${wrap_syms} __libc_malloc"
+fi
+
+  ac_fn_c_check_func "$LINENO" "__libc_memalign" "ac_cv_func___libc_memalign"
+if test "x$ac_cv_func___libc_memalign" = xyes
+then :
+
+printf "%s\n" "#define JEMALLOC_OVERRIDE___LIBC_MEMALIGN  " >>confdefs.h
+
+		 wrap_syms="${wrap_syms} __libc_memalign"
+fi
+
+  ac_fn_c_check_func "$LINENO" "__libc_realloc" "ac_cv_func___libc_realloc"
+if test "x$ac_cv_func___libc_realloc" = xyes
+then :
+
+printf "%s\n" "#define JEMALLOC_OVERRIDE___LIBC_REALLOC  " >>confdefs.h
+
+		 wrap_syms="${wrap_syms} __libc_realloc"
+fi
+
+  ac_fn_c_check_func "$LINENO" "__libc_valloc" "ac_cv_func___libc_valloc"
+if test "x$ac_cv_func___libc_valloc" = xyes
+then :
+
+printf "%s\n" "#define JEMALLOC_OVERRIDE___LIBC_VALLOC  " >>confdefs.h
+
+		 wrap_syms="${wrap_syms} __libc_valloc"
+fi
+
+  ac_fn_c_check_func "$LINENO" "__posix_memalign" "ac_cv_func___posix_memalign"
+if test "x$ac_cv_func___posix_memalign" = xyes
+then :
+
+printf "%s\n" "#define JEMALLOC_OVERRIDE___POSIX_MEMALIGN  " >>confdefs.h
+
+		 wrap_syms="${wrap_syms} __posix_memalign"
+fi
+
+fi
+
+case "${host}" in
+  *-*-mingw* | *-*-cygwin*)
+    wrap_syms="${wrap_syms} tls_callback"
+    ;;
+  *)
+    ;;
+esac
+
+
+# Check whether --with-private_namespace was given.
+if test ${with_private_namespace+y}
+then :
+  withval=$with_private_namespace; JEMALLOC_PRIVATE_NAMESPACE="${with_private_namespace}je_"
+else $as_nop
+  JEMALLOC_PRIVATE_NAMESPACE="je_"
+
+fi
+
+
+printf "%s\n" "#define JEMALLOC_PRIVATE_NAMESPACE $JEMALLOC_PRIVATE_NAMESPACE" >>confdefs.h
+
+private_namespace="$JEMALLOC_PRIVATE_NAMESPACE"
+
+
+
+# Check whether --with-install_suffix was given.
+if test ${with_install_suffix+y}
+then :
+  withval=$with_install_suffix; case "$with_install_suffix" in
+   *\ * ) as_fn_error $? "Install suffix should not contain spaces" "$LINENO" 5 ;;
+   * ) INSTALL_SUFFIX="$with_install_suffix" ;;
+esac
+else $as_nop
+  INSTALL_SUFFIX=
+
+fi
+
+install_suffix="$INSTALL_SUFFIX"
+
+
+
+# Check whether --with-malloc_conf was given.
+if test ${with_malloc_conf+y}
+then :
+  withval=$with_malloc_conf; JEMALLOC_CONFIG_MALLOC_CONF="$with_malloc_conf"
+else $as_nop
+  JEMALLOC_CONFIG_MALLOC_CONF=""
+
+fi
+
+config_malloc_conf="$JEMALLOC_CONFIG_MALLOC_CONF"
+
+printf "%s\n" "#define JEMALLOC_CONFIG_MALLOC_CONF \"$config_malloc_conf\"" >>confdefs.h
+
+
+je_="je_"
+
+
+cfgoutputs_in="Makefile.in"
+cfgoutputs_in="${cfgoutputs_in} jemalloc.pc.in"
+cfgoutputs_in="${cfgoutputs_in} doc/html.xsl.in"
+cfgoutputs_in="${cfgoutputs_in} doc/manpages.xsl.in"
+cfgoutputs_in="${cfgoutputs_in} doc/jemalloc.xml.in"
+cfgoutputs_in="${cfgoutputs_in} include/jemalloc/jemalloc_macros.h.in"
+cfgoutputs_in="${cfgoutputs_in} include/jemalloc/jemalloc_protos.h.in"
+cfgoutputs_in="${cfgoutputs_in} include/jemalloc/jemalloc_typedefs.h.in"
+cfgoutputs_in="${cfgoutputs_in} include/jemalloc/internal/jemalloc_preamble.h.in"
+cfgoutputs_in="${cfgoutputs_in} test/test.sh.in"
+cfgoutputs_in="${cfgoutputs_in} test/include/test/jemalloc_test.h.in"
+
+cfgoutputs_out="Makefile"
+cfgoutputs_out="${cfgoutputs_out} jemalloc.pc"
+cfgoutputs_out="${cfgoutputs_out} doc/html.xsl"
+cfgoutputs_out="${cfgoutputs_out} doc/manpages.xsl"
+cfgoutputs_out="${cfgoutputs_out} doc/jemalloc.xml"
+cfgoutputs_out="${cfgoutputs_out} include/jemalloc/jemalloc_macros.h"
+cfgoutputs_out="${cfgoutputs_out} include/jemalloc/jemalloc_protos.h"
+cfgoutputs_out="${cfgoutputs_out} include/jemalloc/jemalloc_typedefs.h"
+cfgoutputs_out="${cfgoutputs_out} include/jemalloc/internal/jemalloc_preamble.h"
+cfgoutputs_out="${cfgoutputs_out} test/test.sh"
+cfgoutputs_out="${cfgoutputs_out} test/include/test/jemalloc_test.h"
+
+cfgoutputs_tup="Makefile"
+cfgoutputs_tup="${cfgoutputs_tup} jemalloc.pc:jemalloc.pc.in"
+cfgoutputs_tup="${cfgoutputs_tup} doc/html.xsl:doc/html.xsl.in"
+cfgoutputs_tup="${cfgoutputs_tup} doc/manpages.xsl:doc/manpages.xsl.in"
+cfgoutputs_tup="${cfgoutputs_tup} doc/jemalloc.xml:doc/jemalloc.xml.in"
+cfgoutputs_tup="${cfgoutputs_tup} include/jemalloc/jemalloc_macros.h:include/jemalloc/jemalloc_macros.h.in"
+cfgoutputs_tup="${cfgoutputs_tup} include/jemalloc/jemalloc_protos.h:include/jemalloc/jemalloc_protos.h.in"
+cfgoutputs_tup="${cfgoutputs_tup} include/jemalloc/jemalloc_typedefs.h:include/jemalloc/jemalloc_typedefs.h.in"
+cfgoutputs_tup="${cfgoutputs_tup} include/jemalloc/internal/jemalloc_preamble.h"
+cfgoutputs_tup="${cfgoutputs_tup} test/test.sh:test/test.sh.in"
+cfgoutputs_tup="${cfgoutputs_tup} test/include/test/jemalloc_test.h:test/include/test/jemalloc_test.h.in"
+
+cfghdrs_in="include/jemalloc/jemalloc_defs.h.in"
+cfghdrs_in="${cfghdrs_in} include/jemalloc/internal/jemalloc_internal_defs.h.in"
+cfghdrs_in="${cfghdrs_in} include/jemalloc/internal/private_symbols.sh"
+cfghdrs_in="${cfghdrs_in} include/jemalloc/internal/private_namespace.sh"
+cfghdrs_in="${cfghdrs_in} include/jemalloc/internal/public_namespace.sh"
+cfghdrs_in="${cfghdrs_in} include/jemalloc/internal/public_unnamespace.sh"
+cfghdrs_in="${cfghdrs_in} include/jemalloc/jemalloc_rename.sh"
+cfghdrs_in="${cfghdrs_in} include/jemalloc/jemalloc_mangle.sh"
+cfghdrs_in="${cfghdrs_in} include/jemalloc/jemalloc.sh"
+cfghdrs_in="${cfghdrs_in} test/include/test/jemalloc_test_defs.h.in"
+
+cfghdrs_out="include/jemalloc/jemalloc_defs.h"
+cfghdrs_out="${cfghdrs_out} include/jemalloc/jemalloc${install_suffix}.h"
+cfghdrs_out="${cfghdrs_out} include/jemalloc/internal/private_symbols.awk"
+cfghdrs_out="${cfghdrs_out} include/jemalloc/internal/private_symbols_jet.awk"
+cfghdrs_out="${cfghdrs_out} include/jemalloc/internal/public_symbols.txt"
+cfghdrs_out="${cfghdrs_out} include/jemalloc/internal/public_namespace.h"
+cfghdrs_out="${cfghdrs_out} include/jemalloc/internal/public_unnamespace.h"
+cfghdrs_out="${cfghdrs_out} include/jemalloc/jemalloc_protos_jet.h"
+cfghdrs_out="${cfghdrs_out} include/jemalloc/jemalloc_rename.h"
+cfghdrs_out="${cfghdrs_out} include/jemalloc/jemalloc_mangle.h"
+cfghdrs_out="${cfghdrs_out} include/jemalloc/jemalloc_mangle_jet.h"
+cfghdrs_out="${cfghdrs_out} include/jemalloc/internal/jemalloc_internal_defs.h"
+cfghdrs_out="${cfghdrs_out} test/include/test/jemalloc_test_defs.h"
+
+cfghdrs_tup="include/jemalloc/jemalloc_defs.h:include/jemalloc/jemalloc_defs.h.in"
+cfghdrs_tup="${cfghdrs_tup} include/jemalloc/internal/jemalloc_internal_defs.h:include/jemalloc/internal/jemalloc_internal_defs.h.in"
+cfghdrs_tup="${cfghdrs_tup} test/include/test/jemalloc_test_defs.h:test/include/test/jemalloc_test_defs.h.in"
+
+
+# Check whether --enable-debug was given.
+if test ${enable_debug+y}
+then :
+  enableval=$enable_debug; if test "x$enable_debug" = "xno" ; then
+  enable_debug="0"
+else
+  enable_debug="1"
+fi
+
+else $as_nop
+  enable_debug="0"
+
+fi
+
+if test "x$enable_debug" = "x1" ; then
+
+printf "%s\n" "#define JEMALLOC_DEBUG  " >>confdefs.h
+
+fi
+
+
+if test "x$enable_debug" = "x0" ; then
+  if test "x$GCC" = "xyes" ; then
+
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether compiler supports -O3" >&5
+printf %s "checking whether compiler supports -O3... " >&6; }
+T_CONFIGURE_CFLAGS="${CONFIGURE_CFLAGS}"
+T_APPEND_V=-O3
+  if test "x${CONFIGURE_CFLAGS}" = "x" -o "x${T_APPEND_V}" = "x" ; then
+  CONFIGURE_CFLAGS="${CONFIGURE_CFLAGS}${T_APPEND_V}"
+else
+  CONFIGURE_CFLAGS="${CONFIGURE_CFLAGS} ${T_APPEND_V}"
+fi
+
+
+if test "x${CONFIGURE_CFLAGS}" = "x" -o "x${SPECIFIED_CFLAGS}" = "x" ; then
+  CFLAGS="${CONFIGURE_CFLAGS}${SPECIFIED_CFLAGS}"
+else
+  CFLAGS="${CONFIGURE_CFLAGS} ${SPECIFIED_CFLAGS}"
+fi
+
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+
+int
+main (void)
+{
+
+    return 0;
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  je_cv_cflags_added=-O3
+              { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+printf "%s\n" "yes" >&6; }
+else $as_nop
+  je_cv_cflags_added=
+              { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
+              CONFIGURE_CFLAGS="${T_CONFIGURE_CFLAGS}"
+
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+if test "x${CONFIGURE_CFLAGS}" = "x" -o "x${SPECIFIED_CFLAGS}" = "x" ; then
+  CFLAGS="${CONFIGURE_CFLAGS}${SPECIFIED_CFLAGS}"
+else
+  CFLAGS="${CONFIGURE_CFLAGS} ${SPECIFIED_CFLAGS}"
+fi
+
+
+
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether compiler supports -O3" >&5
+printf %s "checking whether compiler supports -O3... " >&6; }
+T_CONFIGURE_CXXFLAGS="${CONFIGURE_CXXFLAGS}"
+T_APPEND_V=-O3
+  if test "x${CONFIGURE_CXXFLAGS}" = "x" -o "x${T_APPEND_V}" = "x" ; then
+  CONFIGURE_CXXFLAGS="${CONFIGURE_CXXFLAGS}${T_APPEND_V}"
+else
+  CONFIGURE_CXXFLAGS="${CONFIGURE_CXXFLAGS} ${T_APPEND_V}"
+fi
+
+
+if test "x${CONFIGURE_CXXFLAGS}" = "x" -o "x${SPECIFIED_CXXFLAGS}" = "x" ; then
+  CXXFLAGS="${CONFIGURE_CXXFLAGS}${SPECIFIED_CXXFLAGS}"
+else
+  CXXFLAGS="${CONFIGURE_CXXFLAGS} ${SPECIFIED_CXXFLAGS}"
+fi
+
+ac_ext=cpp
+ac_cpp='$CXXCPP $CPPFLAGS'
+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
+
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+
+int
+main (void)
+{
+
+    return 0;
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_cxx_try_compile "$LINENO"
+then :
+  je_cv_cxxflags_added=-O3
+              { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+printf "%s\n" "yes" >&6; }
+else $as_nop
+  je_cv_cxxflags_added=
+              { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
+              CONFIGURE_CXXFLAGS="${T_CONFIGURE_CXXFLAGS}"
+
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+if test "x${CONFIGURE_CXXFLAGS}" = "x" -o "x${SPECIFIED_CXXFLAGS}" = "x" ; then
+  CXXFLAGS="${CONFIGURE_CXXFLAGS}${SPECIFIED_CXXFLAGS}"
+else
+  CXXFLAGS="${CONFIGURE_CXXFLAGS} ${SPECIFIED_CXXFLAGS}"
+fi
+
+
+
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether compiler supports -funroll-loops" >&5
+printf %s "checking whether compiler supports -funroll-loops... " >&6; }
+T_CONFIGURE_CFLAGS="${CONFIGURE_CFLAGS}"
+T_APPEND_V=-funroll-loops
+  if test "x${CONFIGURE_CFLAGS}" = "x" -o "x${T_APPEND_V}" = "x" ; then
+  CONFIGURE_CFLAGS="${CONFIGURE_CFLAGS}${T_APPEND_V}"
+else
+  CONFIGURE_CFLAGS="${CONFIGURE_CFLAGS} ${T_APPEND_V}"
+fi
+
+
+if test "x${CONFIGURE_CFLAGS}" = "x" -o "x${SPECIFIED_CFLAGS}" = "x" ; then
+  CFLAGS="${CONFIGURE_CFLAGS}${SPECIFIED_CFLAGS}"
+else
+  CFLAGS="${CONFIGURE_CFLAGS} ${SPECIFIED_CFLAGS}"
+fi
+
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+
+int
+main (void)
+{
+
+    return 0;
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  je_cv_cflags_added=-funroll-loops
+              { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+printf "%s\n" "yes" >&6; }
+else $as_nop
+  je_cv_cflags_added=
+              { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
+              CONFIGURE_CFLAGS="${T_CONFIGURE_CFLAGS}"
+
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+if test "x${CONFIGURE_CFLAGS}" = "x" -o "x${SPECIFIED_CFLAGS}" = "x" ; then
+  CFLAGS="${CONFIGURE_CFLAGS}${SPECIFIED_CFLAGS}"
+else
+  CFLAGS="${CONFIGURE_CFLAGS} ${SPECIFIED_CFLAGS}"
+fi
+
+
+  elif test "x$je_cv_msvc" = "xyes" ; then
+
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether compiler supports -O2" >&5
+printf %s "checking whether compiler supports -O2... " >&6; }
+T_CONFIGURE_CFLAGS="${CONFIGURE_CFLAGS}"
+T_APPEND_V=-O2
+  if test "x${CONFIGURE_CFLAGS}" = "x" -o "x${T_APPEND_V}" = "x" ; then
+  CONFIGURE_CFLAGS="${CONFIGURE_CFLAGS}${T_APPEND_V}"
+else
+  CONFIGURE_CFLAGS="${CONFIGURE_CFLAGS} ${T_APPEND_V}"
+fi
+
+
+if test "x${CONFIGURE_CFLAGS}" = "x" -o "x${SPECIFIED_CFLAGS}" = "x" ; then
+  CFLAGS="${CONFIGURE_CFLAGS}${SPECIFIED_CFLAGS}"
+else
+  CFLAGS="${CONFIGURE_CFLAGS} ${SPECIFIED_CFLAGS}"
+fi
+
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+
+int
+main (void)
+{
+
+    return 0;
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  je_cv_cflags_added=-O2
+              { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+printf "%s\n" "yes" >&6; }
+else $as_nop
+  je_cv_cflags_added=
+              { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
+              CONFIGURE_CFLAGS="${T_CONFIGURE_CFLAGS}"
+
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+if test "x${CONFIGURE_CFLAGS}" = "x" -o "x${SPECIFIED_CFLAGS}" = "x" ; then
+  CFLAGS="${CONFIGURE_CFLAGS}${SPECIFIED_CFLAGS}"
+else
+  CFLAGS="${CONFIGURE_CFLAGS} ${SPECIFIED_CFLAGS}"
+fi
+
+
+
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether compiler supports -O2" >&5
+printf %s "checking whether compiler supports -O2... " >&6; }
+T_CONFIGURE_CXXFLAGS="${CONFIGURE_CXXFLAGS}"
+T_APPEND_V=-O2
+  if test "x${CONFIGURE_CXXFLAGS}" = "x" -o "x${T_APPEND_V}" = "x" ; then
+  CONFIGURE_CXXFLAGS="${CONFIGURE_CXXFLAGS}${T_APPEND_V}"
+else
+  CONFIGURE_CXXFLAGS="${CONFIGURE_CXXFLAGS} ${T_APPEND_V}"
+fi
+
+
+if test "x${CONFIGURE_CXXFLAGS}" = "x" -o "x${SPECIFIED_CXXFLAGS}" = "x" ; then
+  CXXFLAGS="${CONFIGURE_CXXFLAGS}${SPECIFIED_CXXFLAGS}"
+else
+  CXXFLAGS="${CONFIGURE_CXXFLAGS} ${SPECIFIED_CXXFLAGS}"
+fi
+
+ac_ext=cpp
+ac_cpp='$CXXCPP $CPPFLAGS'
+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
+
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+
+int
+main (void)
+{
+
+    return 0;
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_cxx_try_compile "$LINENO"
+then :
+  je_cv_cxxflags_added=-O2
+              { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+printf "%s\n" "yes" >&6; }
+else $as_nop
+  je_cv_cxxflags_added=
+              { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
+              CONFIGURE_CXXFLAGS="${T_CONFIGURE_CXXFLAGS}"
+
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+if test "x${CONFIGURE_CXXFLAGS}" = "x" -o "x${SPECIFIED_CXXFLAGS}" = "x" ; then
+  CXXFLAGS="${CONFIGURE_CXXFLAGS}${SPECIFIED_CXXFLAGS}"
+else
+  CXXFLAGS="${CONFIGURE_CXXFLAGS} ${SPECIFIED_CXXFLAGS}"
+fi
+
+
+  else
+
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether compiler supports -O" >&5
+printf %s "checking whether compiler supports -O... " >&6; }
+T_CONFIGURE_CFLAGS="${CONFIGURE_CFLAGS}"
+T_APPEND_V=-O
+  if test "x${CONFIGURE_CFLAGS}" = "x" -o "x${T_APPEND_V}" = "x" ; then
+  CONFIGURE_CFLAGS="${CONFIGURE_CFLAGS}${T_APPEND_V}"
+else
+  CONFIGURE_CFLAGS="${CONFIGURE_CFLAGS} ${T_APPEND_V}"
+fi
+
+
+if test "x${CONFIGURE_CFLAGS}" = "x" -o "x${SPECIFIED_CFLAGS}" = "x" ; then
+  CFLAGS="${CONFIGURE_CFLAGS}${SPECIFIED_CFLAGS}"
+else
+  CFLAGS="${CONFIGURE_CFLAGS} ${SPECIFIED_CFLAGS}"
+fi
+
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+
+int
+main (void)
+{
+
+    return 0;
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  je_cv_cflags_added=-O
+              { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+printf "%s\n" "yes" >&6; }
+else $as_nop
+  je_cv_cflags_added=
+              { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
+              CONFIGURE_CFLAGS="${T_CONFIGURE_CFLAGS}"
+
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+if test "x${CONFIGURE_CFLAGS}" = "x" -o "x${SPECIFIED_CFLAGS}" = "x" ; then
+  CFLAGS="${CONFIGURE_CFLAGS}${SPECIFIED_CFLAGS}"
+else
+  CFLAGS="${CONFIGURE_CFLAGS} ${SPECIFIED_CFLAGS}"
+fi
+
+
+
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether compiler supports -O" >&5
+printf %s "checking whether compiler supports -O... " >&6; }
+T_CONFIGURE_CXXFLAGS="${CONFIGURE_CXXFLAGS}"
+T_APPEND_V=-O
+  if test "x${CONFIGURE_CXXFLAGS}" = "x" -o "x${T_APPEND_V}" = "x" ; then
+  CONFIGURE_CXXFLAGS="${CONFIGURE_CXXFLAGS}${T_APPEND_V}"
+else
+  CONFIGURE_CXXFLAGS="${CONFIGURE_CXXFLAGS} ${T_APPEND_V}"
+fi
+
+
+if test "x${CONFIGURE_CXXFLAGS}" = "x" -o "x${SPECIFIED_CXXFLAGS}" = "x" ; then
+  CXXFLAGS="${CONFIGURE_CXXFLAGS}${SPECIFIED_CXXFLAGS}"
+else
+  CXXFLAGS="${CONFIGURE_CXXFLAGS} ${SPECIFIED_CXXFLAGS}"
+fi
+
+ac_ext=cpp
+ac_cpp='$CXXCPP $CPPFLAGS'
+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
+
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+
+int
+main (void)
+{
+
+    return 0;
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_cxx_try_compile "$LINENO"
+then :
+  je_cv_cxxflags_added=-O
+              { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+printf "%s\n" "yes" >&6; }
+else $as_nop
+  je_cv_cxxflags_added=
+              { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
+              CONFIGURE_CXXFLAGS="${T_CONFIGURE_CXXFLAGS}"
+
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+if test "x${CONFIGURE_CXXFLAGS}" = "x" -o "x${SPECIFIED_CXXFLAGS}" = "x" ; then
+  CXXFLAGS="${CONFIGURE_CXXFLAGS}${SPECIFIED_CXXFLAGS}"
+else
+  CXXFLAGS="${CONFIGURE_CXXFLAGS} ${SPECIFIED_CXXFLAGS}"
+fi
+
+
+  fi
+fi
+
+# Check whether --enable-stats was given.
+if test ${enable_stats+y}
+then :
+  enableval=$enable_stats; if test "x$enable_stats" = "xno" ; then
+  enable_stats="0"
+else
+  enable_stats="1"
+fi
+
+else $as_nop
+  enable_stats="1"
+
+fi
+
+if test "x$enable_stats" = "x1" ; then
+
+printf "%s\n" "#define JEMALLOC_STATS  " >>confdefs.h
+
+fi
+
+
+# Check whether --enable-experimental_smallocx was given.
+if test ${enable_experimental_smallocx+y}
+then :
+  enableval=$enable_experimental_smallocx; if test "x$enable_experimental_smallocx" = "xno" ; then
+enable_experimental_smallocx="0"
+else
+enable_experimental_smallocx="1"
+fi
+
+else $as_nop
+  enable_experimental_smallocx="0"
+
+fi
+
+if test "x$enable_experimental_smallocx" = "x1" ; then
+
+printf "%s\n" "#define JEMALLOC_EXPERIMENTAL_SMALLOCX_API  " >>confdefs.h
+
+fi
+
+
+# Check whether --enable-prof was given.
+if test ${enable_prof+y}
+then :
+  enableval=$enable_prof; if test "x$enable_prof" = "xno" ; then
+  enable_prof="0"
+else
+  enable_prof="1"
+fi
+
+else $as_nop
+  enable_prof="0"
+
+fi
+
+if test "x$enable_prof" = "x1" ; then
+  backtrace_method=""
+else
+  backtrace_method="N/A"
+fi
+
+# Check whether --enable-prof-libunwind was given.
+if test ${enable_prof_libunwind+y}
+then :
+  enableval=$enable_prof_libunwind; if test "x$enable_prof_libunwind" = "xno" ; then
+  enable_prof_libunwind="0"
+else
+  enable_prof_libunwind="1"
+  if test "x$enable_prof" = "x0" ; then
+    as_fn_error $? "--enable-prof-libunwind should only be used with --enable-prof" "$LINENO" 5
+  fi
+fi
+
+else $as_nop
+  enable_prof_libunwind="0"
+
+fi
+
+
+# Check whether --with-static_libunwind was given.
+if test ${with_static_libunwind+y}
+then :
+  withval=$with_static_libunwind; if test "x$with_static_libunwind" = "xno" ; then
+  LUNWIND="-lunwind"
+else
+  if test ! -f "$with_static_libunwind" ; then
+    as_fn_error $? "Static libunwind not found: $with_static_libunwind" "$LINENO" 5
+  fi
+  LUNWIND="$with_static_libunwind"
+fi
+else $as_nop
+  LUNWIND="-lunwind"
+
+fi
+
+if test "x$backtrace_method" = "x" -a "x$enable_prof_libunwind" = "x1" ; then
+         for ac_header in libunwind.h
+do :
+  ac_fn_c_check_header_compile "$LINENO" "libunwind.h" "ac_cv_header_libunwind_h" "$ac_includes_default"
+if test "x$ac_cv_header_libunwind_h" = xyes
+then :
+  printf "%s\n" "#define HAVE_LIBUNWIND_H 1" >>confdefs.h
+
+else $as_nop
+  enable_prof_libunwind="0"
+fi
+
+done
+  if test "x$LUNWIND" = "x-lunwind" ; then
+    { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for unw_backtrace in -lunwind" >&5
+printf %s "checking for unw_backtrace in -lunwind... " >&6; }
+if test ${ac_cv_lib_unwind_unw_backtrace+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  ac_check_lib_save_LIBS=$LIBS
+LIBS="-lunwind  $LIBS"
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+/* Override any GCC internal prototype to avoid an error.
+   Use char because int might match the return type of a GCC
+   builtin and then its argument prototype would still apply.  */
+char unw_backtrace ();
+int
+main (void)
+{
+return unw_backtrace ();
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"
+then :
+  ac_cv_lib_unwind_unw_backtrace=yes
+else $as_nop
+  ac_cv_lib_unwind_unw_backtrace=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
+    conftest$ac_exeext conftest.$ac_ext
+LIBS=$ac_check_lib_save_LIBS
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_unwind_unw_backtrace" >&5
+printf "%s\n" "$ac_cv_lib_unwind_unw_backtrace" >&6; }
+if test "x$ac_cv_lib_unwind_unw_backtrace" = xyes
+then :
+  T_APPEND_V=$LUNWIND
+  if test "x${LIBS}" = "x" -o "x${T_APPEND_V}" = "x" ; then
+  LIBS="${LIBS}${T_APPEND_V}"
+else
+  LIBS="${LIBS} ${T_APPEND_V}"
+fi
+
+
+else $as_nop
+  enable_prof_libunwind="0"
+fi
+
+  else
+    T_APPEND_V=$LUNWIND
+  if test "x${LIBS}" = "x" -o "x${T_APPEND_V}" = "x" ; then
+  LIBS="${LIBS}${T_APPEND_V}"
+else
+  LIBS="${LIBS} ${T_APPEND_V}"
+fi
+
+
+  fi
+  if test "x${enable_prof_libunwind}" = "x1" ; then
+    backtrace_method="libunwind"
+
+printf "%s\n" "#define JEMALLOC_PROF_LIBUNWIND  " >>confdefs.h
+
+  fi
+fi
+
+# Check whether --enable-prof-libgcc was given.
+if test ${enable_prof_libgcc+y}
+then :
+  enableval=$enable_prof_libgcc; if test "x$enable_prof_libgcc" = "xno" ; then
+  enable_prof_libgcc="0"
+else
+  enable_prof_libgcc="1"
+fi
+
+else $as_nop
+  enable_prof_libgcc="1"
+
+fi
+
+if test "x$backtrace_method" = "x" -a "x$enable_prof_libgcc" = "x1" \
+     -a "x$GCC" = "xyes" ; then
+         for ac_header in unwind.h
+do :
+  ac_fn_c_check_header_compile "$LINENO" "unwind.h" "ac_cv_header_unwind_h" "$ac_includes_default"
+if test "x$ac_cv_header_unwind_h" = xyes
+then :
+  printf "%s\n" "#define HAVE_UNWIND_H 1" >>confdefs.h
+
+else $as_nop
+  enable_prof_libgcc="0"
+fi
+
+done
+  if test "x${enable_prof_libgcc}" = "x1" ; then
+    { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for _Unwind_Backtrace in -lgcc" >&5
+printf %s "checking for _Unwind_Backtrace in -lgcc... " >&6; }
+if test ${ac_cv_lib_gcc__Unwind_Backtrace+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  ac_check_lib_save_LIBS=$LIBS
+LIBS="-lgcc  $LIBS"
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+/* Override any GCC internal prototype to avoid an error.
+   Use char because int might match the return type of a GCC
+   builtin and then its argument prototype would still apply.  */
+char _Unwind_Backtrace ();
+int
+main (void)
+{
+return _Unwind_Backtrace ();
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"
+then :
+  ac_cv_lib_gcc__Unwind_Backtrace=yes
+else $as_nop
+  ac_cv_lib_gcc__Unwind_Backtrace=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
+    conftest$ac_exeext conftest.$ac_ext
+LIBS=$ac_check_lib_save_LIBS
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_gcc__Unwind_Backtrace" >&5
+printf "%s\n" "$ac_cv_lib_gcc__Unwind_Backtrace" >&6; }
+if test "x$ac_cv_lib_gcc__Unwind_Backtrace" = xyes
+then :
+  T_APPEND_V=-lgcc
+  if test "x${LIBS}" = "x" -o "x${T_APPEND_V}" = "x" ; then
+  LIBS="${LIBS}${T_APPEND_V}"
+else
+  LIBS="${LIBS} ${T_APPEND_V}"
+fi
+
+
+else $as_nop
+  enable_prof_libgcc="0"
+fi
+
+  fi
+  if test "x${enable_prof_libgcc}" = "x1" ; then
+    backtrace_method="libgcc"
+
+printf "%s\n" "#define JEMALLOC_PROF_LIBGCC  " >>confdefs.h
+
+  fi
+else
+  enable_prof_libgcc="0"
+fi
+
+# Check whether --enable-prof-gcc was given.
+if test ${enable_prof_gcc+y}
+then :
+  enableval=$enable_prof_gcc; if test "x$enable_prof_gcc" = "xno" ; then
+  enable_prof_gcc="0"
+else
+  enable_prof_gcc="1"
+fi
+
+else $as_nop
+  enable_prof_gcc="1"
+
+fi
+
+if test "x$backtrace_method" = "x" -a "x$enable_prof_gcc" = "x1" \
+     -a "x$GCC" = "xyes" ; then
+
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether compiler supports -fno-omit-frame-pointer" >&5
+printf %s "checking whether compiler supports -fno-omit-frame-pointer... " >&6; }
+T_CONFIGURE_CFLAGS="${CONFIGURE_CFLAGS}"
+T_APPEND_V=-fno-omit-frame-pointer
+  if test "x${CONFIGURE_CFLAGS}" = "x" -o "x${T_APPEND_V}" = "x" ; then
+  CONFIGURE_CFLAGS="${CONFIGURE_CFLAGS}${T_APPEND_V}"
+else
+  CONFIGURE_CFLAGS="${CONFIGURE_CFLAGS} ${T_APPEND_V}"
+fi
+
+
+if test "x${CONFIGURE_CFLAGS}" = "x" -o "x${SPECIFIED_CFLAGS}" = "x" ; then
+  CFLAGS="${CONFIGURE_CFLAGS}${SPECIFIED_CFLAGS}"
+else
+  CFLAGS="${CONFIGURE_CFLAGS} ${SPECIFIED_CFLAGS}"
+fi
+
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+
+int
+main (void)
+{
+
+    return 0;
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  je_cv_cflags_added=-fno-omit-frame-pointer
+              { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+printf "%s\n" "yes" >&6; }
+else $as_nop
+  je_cv_cflags_added=
+              { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
+              CONFIGURE_CFLAGS="${T_CONFIGURE_CFLAGS}"
+
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+if test "x${CONFIGURE_CFLAGS}" = "x" -o "x${SPECIFIED_CFLAGS}" = "x" ; then
+  CFLAGS="${CONFIGURE_CFLAGS}${SPECIFIED_CFLAGS}"
+else
+  CFLAGS="${CONFIGURE_CFLAGS} ${SPECIFIED_CFLAGS}"
+fi
+
+
+  backtrace_method="gcc intrinsics"
+
+printf "%s\n" "#define JEMALLOC_PROF_GCC  " >>confdefs.h
+
+else
+  enable_prof_gcc="0"
+fi
+
+if test "x$backtrace_method" = "x" ; then
+  backtrace_method="none (disabling profiling)"
+  enable_prof="0"
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking configured backtracing method" >&5
+printf %s "checking configured backtracing method... " >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $backtrace_method" >&5
+printf "%s\n" "$backtrace_method" >&6; }
+if test "x$enable_prof" = "x1" ; then
+    T_APPEND_V=$LM
+  if test "x${LIBS}" = "x" -o "x${T_APPEND_V}" = "x" ; then
+  LIBS="${LIBS}${T_APPEND_V}"
+else
+  LIBS="${LIBS} ${T_APPEND_V}"
+fi
+
+
+
+
+printf "%s\n" "#define JEMALLOC_PROF  " >>confdefs.h
+
+fi
+
+
+if test "x${maps_coalesce}" = "x1" ; then
+
+printf "%s\n" "#define JEMALLOC_MAPS_COALESCE  " >>confdefs.h
+
+fi
+
+if test "x$default_retain" = "x1" ; then
+
+printf "%s\n" "#define JEMALLOC_RETAIN  " >>confdefs.h
+
+fi
+
+if test "x$zero_realloc_default_free" = "x1" ; then
+
+printf "%s\n" "#define JEMALLOC_ZERO_REALLOC_DEFAULT_FREE  " >>confdefs.h
+
+fi
+
+have_dss="1"
+ac_fn_c_check_func "$LINENO" "sbrk" "ac_cv_func_sbrk"
+if test "x$ac_cv_func_sbrk" = xyes
+then :
+  have_sbrk="1"
+else $as_nop
+  have_sbrk="0"
+fi
+
+if test "x$have_sbrk" = "x1" ; then
+  if test "x$sbrk_deprecated" = "x1" ; then
+    { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: Disabling dss allocation because sbrk is deprecated" >&5
+printf "%s\n" "Disabling dss allocation because sbrk is deprecated" >&6; }
+    have_dss="0"
+  fi
+else
+  have_dss="0"
+fi
+
+if test "x$have_dss" = "x1" ; then
+
+printf "%s\n" "#define JEMALLOC_DSS  " >>confdefs.h
+
+fi
+
+# Check whether --enable-fill was given.
+if test ${enable_fill+y}
+then :
+  enableval=$enable_fill; if test "x$enable_fill" = "xno" ; then
+  enable_fill="0"
+else
+  enable_fill="1"
+fi
+
+else $as_nop
+  enable_fill="1"
+
+fi
+
+if test "x$enable_fill" = "x1" ; then
+
+printf "%s\n" "#define JEMALLOC_FILL  " >>confdefs.h
+
+fi
+
+
+# Check whether --enable-utrace was given.
+if test ${enable_utrace+y}
+then :
+  enableval=$enable_utrace; if test "x$enable_utrace" = "xno" ; then
+  enable_utrace="0"
+else
+  enable_utrace="1"
+fi
+
+else $as_nop
+  enable_utrace="0"
+
+fi
+
+
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether utrace(2) is compilable" >&5
+printf %s "checking whether utrace(2) is compilable... " >&6; }
+if test ${je_cv_utrace+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+#include <sys/types.h>
+#include <sys/param.h>
+#include <sys/time.h>
+#include <sys/uio.h>
+#include <sys/ktrace.h>
+
+int
+main (void)
+{
+
+	utrace((void *)0, 0);
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"
+then :
+  je_cv_utrace=yes
+else $as_nop
+  je_cv_utrace=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
+    conftest$ac_exeext conftest.$ac_ext
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $je_cv_utrace" >&5
+printf "%s\n" "$je_cv_utrace" >&6; }
+
+if test "x${je_cv_utrace}" = "xno" ; then
+
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether utrace(2) with label is compilable" >&5
+printf %s "checking whether utrace(2) with label is compilable... " >&6; }
+if test ${je_cv_utrace_label+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+  #include <sys/types.h>
+  #include <sys/param.h>
+  #include <sys/time.h>
+  #include <sys/uio.h>
+  #include <sys/ktrace.h>
+
+int
+main (void)
+{
+
+	  utrace((void *)0, (void *)0, 0);
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"
+then :
+  je_cv_utrace_label=yes
+else $as_nop
+  je_cv_utrace_label=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
+    conftest$ac_exeext conftest.$ac_ext
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $je_cv_utrace_label" >&5
+printf "%s\n" "$je_cv_utrace_label" >&6; }
+
+  if test "x${je_cv_utrace_label}" = "xno"; then
+    enable_utrace="0"
+  fi
+  if test "x$enable_utrace" = "x1" ; then
+
+printf "%s\n" "#define JEMALLOC_UTRACE_LABEL  " >>confdefs.h
+
+  fi
+else
+  if test "x$enable_utrace" = "x1" ; then
+
+printf "%s\n" "#define JEMALLOC_UTRACE  " >>confdefs.h
+
+  fi
+fi
+
+
+# Check whether --enable-xmalloc was given.
+if test ${enable_xmalloc+y}
+then :
+  enableval=$enable_xmalloc; if test "x$enable_xmalloc" = "xno" ; then
+  enable_xmalloc="0"
+else
+  enable_xmalloc="1"
+fi
+
+else $as_nop
+  enable_xmalloc="0"
+
+fi
+
+if test "x$enable_xmalloc" = "x1" ; then
+
+printf "%s\n" "#define JEMALLOC_XMALLOC  " >>confdefs.h
+
+fi
+
+
+# Check whether --enable-cache-oblivious was given.
+if test ${enable_cache_oblivious+y}
+then :
+  enableval=$enable_cache_oblivious; if test "x$enable_cache_oblivious" = "xno" ; then
+  enable_cache_oblivious="0"
+else
+  enable_cache_oblivious="1"
+fi
+
+else $as_nop
+  enable_cache_oblivious="1"
+
+fi
+
+if test "x$enable_cache_oblivious" = "x1" ; then
+
+printf "%s\n" "#define JEMALLOC_CACHE_OBLIVIOUS  " >>confdefs.h
+
+fi
+
+
+# Check whether --enable-log was given.
+if test ${enable_log+y}
+then :
+  enableval=$enable_log; if test "x$enable_log" = "xno" ; then
+  enable_log="0"
+else
+  enable_log="1"
+fi
+
+else $as_nop
+  enable_log="0"
+
+fi
+
+if test "x$enable_log" = "x1" ; then
+
+printf "%s\n" "#define JEMALLOC_LOG  " >>confdefs.h
+
+fi
+
+
+# Check whether --enable-readlinkat was given.
+if test ${enable_readlinkat+y}
+then :
+  enableval=$enable_readlinkat; if test "x$enable_readlinkat" = "xno" ; then
+  enable_readlinkat="0"
+else
+  enable_readlinkat="1"
+fi
+
+else $as_nop
+  enable_readlinkat="0"
+
+fi
+
+if test "x$enable_readlinkat" = "x1" ; then
+
+printf "%s\n" "#define JEMALLOC_READLINKAT  " >>confdefs.h
+
+fi
+
+
+# Check whether --enable-opt-safety-checks was given.
+if test ${enable_opt_safety_checks+y}
+then :
+  enableval=$enable_opt_safety_checks; if test "x$enable_opt_safety_checks" = "xno" ; then
+  enable_opt_safety_checks="0"
+else
+  enable_opt_safety_checks="1"
+fi
+
+else $as_nop
+  enable_opt_safety_checks="0"
+
+fi
+
+if test "x$enable_opt_safety_checks" = "x1" ; then
+
+printf "%s\n" "#define JEMALLOC_OPT_SAFETY_CHECKS  " >>confdefs.h
+
+fi
+
+
+# Check whether --enable-opt-size-checks was given.
+if test ${enable_opt_size_checks+y}
+then :
+  enableval=$enable_opt_size_checks; if test "x$enable_opt_size_checks" = "xno" ; then
+  enable_opt_size_checks="0"
+else
+  enable_opt_size_checks="1"
+fi
+
+else $as_nop
+  enable_opt_size_checks="0"
+
+fi
+
+if test "x$enable_opt_size_checks" = "x1" ; then
+
+printf "%s\n" "#define JEMALLOC_OPT_SIZE_CHECKS  " >>confdefs.h
+
+fi
+
+
+# Check whether --enable-uaf-detection was given.
+if test ${enable_uaf_detection+y}
+then :
+  enableval=$enable_uaf_detection; if test "x$enable_uaf_detection" = "xno" ; then
+  enable_uaf_detection="0"
+else
+  enable_uaf_detection="1"
+fi
+
+else $as_nop
+  enable_uaf_detection="0"
+
+fi
+
+if test "x$enable_uaf_detection" = "x1" ; then
+  printf "%s\n" "#define JEMALLOC_UAF_DETECTION  " >>confdefs.h
+
+fi
+
+
+
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether a program using __builtin_unreachable is compilable" >&5
+printf %s "checking whether a program using __builtin_unreachable is compilable... " >&6; }
+if test ${je_cv_gcc_builtin_unreachable+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+void foo (void) {
+  __builtin_unreachable();
+}
+
+int
+main (void)
+{
+
+	{
+		foo();
+	}
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"
+then :
+  je_cv_gcc_builtin_unreachable=yes
+else $as_nop
+  je_cv_gcc_builtin_unreachable=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
+    conftest$ac_exeext conftest.$ac_ext
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $je_cv_gcc_builtin_unreachable" >&5
+printf "%s\n" "$je_cv_gcc_builtin_unreachable" >&6; }
+
+if test "x${je_cv_gcc_builtin_unreachable}" = "xyes" ; then
+
+printf "%s\n" "#define JEMALLOC_INTERNAL_UNREACHABLE __builtin_unreachable" >>confdefs.h
+
+else
+
+printf "%s\n" "#define JEMALLOC_INTERNAL_UNREACHABLE abort" >>confdefs.h
+
+fi
+
+
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether a program using __builtin_ffsl is compilable" >&5
+printf %s "checking whether a program using __builtin_ffsl is compilable... " >&6; }
+if test ${je_cv_gcc_builtin_ffsl+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+#include <stdio.h>
+#include <strings.h>
+#include <string.h>
+
+int
+main (void)
+{
+
+	{
+		int rv = __builtin_ffsl(0x08);
+		printf("%d\n", rv);
+	}
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"
+then :
+  je_cv_gcc_builtin_ffsl=yes
+else $as_nop
+  je_cv_gcc_builtin_ffsl=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
+    conftest$ac_exeext conftest.$ac_ext
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $je_cv_gcc_builtin_ffsl" >&5
+printf "%s\n" "$je_cv_gcc_builtin_ffsl" >&6; }
+
+if test "x${je_cv_gcc_builtin_ffsl}" = "xyes" ; then
+
+printf "%s\n" "#define JEMALLOC_INTERNAL_FFSLL __builtin_ffsll" >>confdefs.h
+
+
+printf "%s\n" "#define JEMALLOC_INTERNAL_FFSL __builtin_ffsl" >>confdefs.h
+
+
+printf "%s\n" "#define JEMALLOC_INTERNAL_FFS __builtin_ffs" >>confdefs.h
+
+else
+
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether a program using ffsl is compilable" >&5
+printf %s "checking whether a program using ffsl is compilable... " >&6; }
+if test ${je_cv_function_ffsl+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+  #include <stdio.h>
+  #include <strings.h>
+  #include <string.h>
+
+int
+main (void)
+{
+
+	{
+		int rv = ffsl(0x08);
+		printf("%d\n", rv);
+	}
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"
+then :
+  je_cv_function_ffsl=yes
+else $as_nop
+  je_cv_function_ffsl=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
+    conftest$ac_exeext conftest.$ac_ext
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $je_cv_function_ffsl" >&5
+printf "%s\n" "$je_cv_function_ffsl" >&6; }
+
+  if test "x${je_cv_function_ffsl}" = "xyes" ; then
+
+printf "%s\n" "#define JEMALLOC_INTERNAL_FFSLL ffsll" >>confdefs.h
+
+
+printf "%s\n" "#define JEMALLOC_INTERNAL_FFSL ffsl" >>confdefs.h
+
+
+printf "%s\n" "#define JEMALLOC_INTERNAL_FFS ffs" >>confdefs.h
+
+  else
+    as_fn_error $? "Cannot build without ffsl(3) or __builtin_ffsl()" "$LINENO" 5
+  fi
+fi
+
+
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether a program using __builtin_popcountl is compilable" >&5
+printf %s "checking whether a program using __builtin_popcountl is compilable... " >&6; }
+if test ${je_cv_gcc_builtin_popcountl+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+#include <stdio.h>
+#include <strings.h>
+#include <string.h>
+
+int
+main (void)
+{
+
+	{
+		int rv = __builtin_popcountl(0x08);
+		printf("%d\n", rv);
+	}
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"
+then :
+  je_cv_gcc_builtin_popcountl=yes
+else $as_nop
+  je_cv_gcc_builtin_popcountl=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
+    conftest$ac_exeext conftest.$ac_ext
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $je_cv_gcc_builtin_popcountl" >&5
+printf "%s\n" "$je_cv_gcc_builtin_popcountl" >&6; }
+
+if test "x${je_cv_gcc_builtin_popcountl}" = "xyes" ; then
+
+printf "%s\n" "#define JEMALLOC_INTERNAL_POPCOUNT __builtin_popcount" >>confdefs.h
+
+
+printf "%s\n" "#define JEMALLOC_INTERNAL_POPCOUNTL __builtin_popcountl" >>confdefs.h
+
+
+printf "%s\n" "#define JEMALLOC_INTERNAL_POPCOUNTLL __builtin_popcountll" >>confdefs.h
+
+fi
+
+
+# Check whether --with-lg_quantum was given.
+if test ${with_lg_quantum+y}
+then :
+  withval=$with_lg_quantum;
+fi
+
+if test "x$with_lg_quantum" != "x" ; then
+
+printf "%s\n" "#define LG_QUANTUM $with_lg_quantum" >>confdefs.h
+
+fi
+
+
+# Check whether --with-lg_slab_maxregs was given.
+if test ${with_lg_slab_maxregs+y}
+then :
+  withval=$with_lg_slab_maxregs; CONFIG_LG_SLAB_MAXREGS="with_lg_slab_maxregs"
+else $as_nop
+  CONFIG_LG_SLAB_MAXREGS=""
+fi
+
+if test "x$with_lg_slab_maxregs" != "x" ; then
+
+printf "%s\n" "#define CONFIG_LG_SLAB_MAXREGS $with_lg_slab_maxregs" >>confdefs.h
+
+fi
+
+
+# Check whether --with-lg_page was given.
+if test ${with_lg_page+y}
+then :
+  withval=$with_lg_page; LG_PAGE="$with_lg_page"
+else $as_nop
+  LG_PAGE="detect"
+fi
+
+case "${host}" in
+  aarch64-apple-darwin*)
+                  if test "x${host}" != "x${build}" -a "x$LG_PAGE" = "xdetect"; then
+        LG_PAGE=14
+      fi
+      ;;
+esac
+if test "x$LG_PAGE" = "xdetect"; then
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking LG_PAGE" >&5
+printf %s "checking LG_PAGE... " >&6; }
+if test ${je_cv_lg_page+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  if test "$cross_compiling" = yes
+then :
+  je_cv_lg_page=12
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+#include <strings.h>
+#ifdef _WIN32
+#include <windows.h>
+#else
+#include <unistd.h>
+#endif
+#include <stdio.h>
+
+int
+main (void)
+{
+
+    int result;
+    FILE *f;
+
+#ifdef _WIN32
+    SYSTEM_INFO si;
+    GetSystemInfo(&si);
+    result = si.dwPageSize;
+#else
+    result = sysconf(_SC_PAGESIZE);
+#endif
+    if (result == -1) {
+	return 1;
+    }
+    result = JEMALLOC_INTERNAL_FFSL(result) - 1;
+
+    f = fopen("conftest.out", "w");
+    if (f == NULL) {
+	return 1;
+    }
+    fprintf(f, "%d", result);
+    fclose(f);
+
+    return 0;
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_run "$LINENO"
+then :
+  je_cv_lg_page=`cat conftest.out`
+else $as_nop
+  je_cv_lg_page=undefined
+fi
+rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
+  conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $je_cv_lg_page" >&5
+printf "%s\n" "$je_cv_lg_page" >&6; }
+fi
+if test "x${je_cv_lg_page}" != "x" ; then
+  LG_PAGE="${je_cv_lg_page}"
+fi
+if test "x${LG_PAGE}" != "xundefined" ; then
+
+printf "%s\n" "#define LG_PAGE $LG_PAGE" >>confdefs.h
+
+else
+   as_fn_error $? "cannot determine value for LG_PAGE" "$LINENO" 5
+fi
+
+
+# Check whether --with-lg_hugepage was given.
+if test ${with_lg_hugepage+y}
+then :
+  withval=$with_lg_hugepage; je_cv_lg_hugepage="${with_lg_hugepage}"
+else $as_nop
+  je_cv_lg_hugepage=""
+fi
+
+if test "x${je_cv_lg_hugepage}" = "x" ; then
+          if test -e "/proc/meminfo" ; then
+    hpsk=`cat /proc/meminfo 2>/dev/null | \
+          grep -e '^Hugepagesize:[[:space:]]\+[0-9]\+[[:space:]]kB$' | \
+          awk '{print $2}'`
+    if test "x${hpsk}" != "x" ; then
+      je_cv_lg_hugepage=10
+      while test "${hpsk}" -gt 1 ; do
+        hpsk="$((hpsk / 2))"
+        je_cv_lg_hugepage="$((je_cv_lg_hugepage + 1))"
+      done
+    fi
+  fi
+
+    if test "x${je_cv_lg_hugepage}" = "x" ; then
+    je_cv_lg_hugepage=21
+  fi
+fi
+if test "x${LG_PAGE}" != "xundefined" -a \
+        "${je_cv_lg_hugepage}" -lt "${LG_PAGE}" ; then
+  as_fn_error $? "Huge page size (2^${je_cv_lg_hugepage}) must be at least page size (2^${LG_PAGE})" "$LINENO" 5
+fi
+
+printf "%s\n" "#define LG_HUGEPAGE ${je_cv_lg_hugepage}" >>confdefs.h
+
+
+# Check whether --enable-libdl was given.
+if test ${enable_libdl+y}
+then :
+  enableval=$enable_libdl; if test "x$enable_libdl" = "xno" ; then
+  enable_libdl="0"
+else
+  enable_libdl="1"
+fi
+
+else $as_nop
+  enable_libdl="1"
+
+fi
+
+
+
+
+if test "x$abi" != "xpecoff" ; then
+
+printf "%s\n" "#define JEMALLOC_HAVE_PTHREAD  " >>confdefs.h
+
+         for ac_header in pthread.h
+do :
+  ac_fn_c_check_header_compile "$LINENO" "pthread.h" "ac_cv_header_pthread_h" "$ac_includes_default"
+if test "x$ac_cv_header_pthread_h" = xyes
+then :
+  printf "%s\n" "#define HAVE_PTHREAD_H 1" >>confdefs.h
+
+else $as_nop
+  as_fn_error $? "pthread.h is missing" "$LINENO" 5
+fi
+
+done
+      { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for pthread_create in -lpthread" >&5
+printf %s "checking for pthread_create in -lpthread... " >&6; }
+if test ${ac_cv_lib_pthread_pthread_create+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  ac_check_lib_save_LIBS=$LIBS
+LIBS="-lpthread  $LIBS"
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+/* Override any GCC internal prototype to avoid an error.
+   Use char because int might match the return type of a GCC
+   builtin and then its argument prototype would still apply.  */
+char pthread_create ();
+int
+main (void)
+{
+return pthread_create ();
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"
+then :
+  ac_cv_lib_pthread_pthread_create=yes
+else $as_nop
+  ac_cv_lib_pthread_pthread_create=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
+    conftest$ac_exeext conftest.$ac_ext
+LIBS=$ac_check_lib_save_LIBS
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_pthread_pthread_create" >&5
+printf "%s\n" "$ac_cv_lib_pthread_pthread_create" >&6; }
+if test "x$ac_cv_lib_pthread_pthread_create" = xyes
+then :
+  T_APPEND_V=-pthread
+  if test "x${LIBS}" = "x" -o "x${T_APPEND_V}" = "x" ; then
+  LIBS="${LIBS}${T_APPEND_V}"
+else
+  LIBS="${LIBS} ${T_APPEND_V}"
+fi
+
+
+else $as_nop
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for library containing pthread_create" >&5
+printf %s "checking for library containing pthread_create... " >&6; }
+if test ${ac_cv_search_pthread_create+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  ac_func_search_save_LIBS=$LIBS
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+/* Override any GCC internal prototype to avoid an error.
+   Use char because int might match the return type of a GCC
+   builtin and then its argument prototype would still apply.  */
+char pthread_create ();
+int
+main (void)
+{
+return pthread_create ();
+  ;
+  return 0;
+}
+_ACEOF
+for ac_lib in ''
+do
+  if test -z "$ac_lib"; then
+    ac_res="none required"
+  else
+    ac_res=-l$ac_lib
+    LIBS="-l$ac_lib  $ac_func_search_save_LIBS"
+  fi
+  if ac_fn_c_try_link "$LINENO"
+then :
+  ac_cv_search_pthread_create=$ac_res
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
+    conftest$ac_exeext
+  if test ${ac_cv_search_pthread_create+y}
+then :
+  break
+fi
+done
+if test ${ac_cv_search_pthread_create+y}
+then :
+
+else $as_nop
+  ac_cv_search_pthread_create=no
+fi
+rm conftest.$ac_ext
+LIBS=$ac_func_search_save_LIBS
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_search_pthread_create" >&5
+printf "%s\n" "$ac_cv_search_pthread_create" >&6; }
+ac_res=$ac_cv_search_pthread_create
+if test "$ac_res" != no
+then :
+  test "$ac_res" = "none required" || LIBS="$ac_res $LIBS"
+
+else $as_nop
+  as_fn_error $? "libpthread is missing" "$LINENO" 5
+fi
+
+fi
+
+  wrap_syms="${wrap_syms} pthread_create"
+  have_pthread="1"
+
+  if test "x$enable_libdl" = "x1" ; then
+    have_dlsym="1"
+           for ac_header in dlfcn.h
+do :
+  ac_fn_c_check_header_compile "$LINENO" "dlfcn.h" "ac_cv_header_dlfcn_h" "$ac_includes_default"
+if test "x$ac_cv_header_dlfcn_h" = xyes
+then :
+  printf "%s\n" "#define HAVE_DLFCN_H 1" >>confdefs.h
+ ac_fn_c_check_func "$LINENO" "dlsym" "ac_cv_func_dlsym"
+if test "x$ac_cv_func_dlsym" = xyes
+then :
+
+else $as_nop
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for dlsym in -ldl" >&5
+printf %s "checking for dlsym in -ldl... " >&6; }
+if test ${ac_cv_lib_dl_dlsym+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  ac_check_lib_save_LIBS=$LIBS
+LIBS="-ldl  $LIBS"
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+/* Override any GCC internal prototype to avoid an error.
+   Use char because int might match the return type of a GCC
+   builtin and then its argument prototype would still apply.  */
+char dlsym ();
+int
+main (void)
+{
+return dlsym ();
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"
+then :
+  ac_cv_lib_dl_dlsym=yes
+else $as_nop
+  ac_cv_lib_dl_dlsym=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
+    conftest$ac_exeext conftest.$ac_ext
+LIBS=$ac_check_lib_save_LIBS
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_dl_dlsym" >&5
+printf "%s\n" "$ac_cv_lib_dl_dlsym" >&6; }
+if test "x$ac_cv_lib_dl_dlsym" = xyes
+then :
+  LIBS="$LIBS -ldl"
+else $as_nop
+  have_dlsym="0"
+fi
+
+fi
+
+else $as_nop
+  have_dlsym="0"
+fi
+
+done
+    if test "x$have_dlsym" = "x1" ; then
+
+printf "%s\n" "#define JEMALLOC_HAVE_DLSYM  " >>confdefs.h
+
+    fi
+  else
+    have_dlsym="0"
+  fi
+
+
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether pthread_atfork(3) is compilable" >&5
+printf %s "checking whether pthread_atfork(3) is compilable... " >&6; }
+if test ${je_cv_pthread_atfork+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+#include <pthread.h>
+
+int
+main (void)
+{
+
+  pthread_atfork((void *)0, (void *)0, (void *)0);
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"
+then :
+  je_cv_pthread_atfork=yes
+else $as_nop
+  je_cv_pthread_atfork=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
+    conftest$ac_exeext conftest.$ac_ext
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $je_cv_pthread_atfork" >&5
+printf "%s\n" "$je_cv_pthread_atfork" >&6; }
+
+  if test "x${je_cv_pthread_atfork}" = "xyes" ; then
+
+printf "%s\n" "#define JEMALLOC_HAVE_PTHREAD_ATFORK  " >>confdefs.h
+
+  fi
+
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether pthread_setname_np(3) is compilable" >&5
+printf %s "checking whether pthread_setname_np(3) is compilable... " >&6; }
+if test ${je_cv_pthread_setname_np+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+#include <pthread.h>
+
+int
+main (void)
+{
+
+  pthread_setname_np(pthread_self(), "setname_test");
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"
+then :
+  je_cv_pthread_setname_np=yes
+else $as_nop
+  je_cv_pthread_setname_np=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
+    conftest$ac_exeext conftest.$ac_ext
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $je_cv_pthread_setname_np" >&5
+printf "%s\n" "$je_cv_pthread_setname_np" >&6; }
+
+  if test "x${je_cv_pthread_setname_np}" = "xyes" ; then
+
+printf "%s\n" "#define JEMALLOC_HAVE_PTHREAD_SETNAME_NP  " >>confdefs.h
+
+  fi
+
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether pthread_getname_np(3) is compilable" >&5
+printf %s "checking whether pthread_getname_np(3) is compilable... " >&6; }
+if test ${je_cv_pthread_getname_np+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+#include <pthread.h>
+#include <stdlib.h>
+
+int
+main (void)
+{
+
+  {
+  	char *name = malloc(16);
+  	pthread_getname_np(pthread_self(), name, 16);
+	free(name);
+  }
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"
+then :
+  je_cv_pthread_getname_np=yes
+else $as_nop
+  je_cv_pthread_getname_np=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
+    conftest$ac_exeext conftest.$ac_ext
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $je_cv_pthread_getname_np" >&5
+printf "%s\n" "$je_cv_pthread_getname_np" >&6; }
+
+  if test "x${je_cv_pthread_getname_np}" = "xyes" ; then
+
+printf "%s\n" "#define JEMALLOC_HAVE_PTHREAD_GETNAME_NP  " >>confdefs.h
+
+  fi
+
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether pthread_get_name_np(3) is compilable" >&5
+printf %s "checking whether pthread_get_name_np(3) is compilable... " >&6; }
+if test ${je_cv_pthread_get_name_np+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+#include <pthread.h>
+#include <pthread_np.h>
+#include <stdlib.h>
+
+int
+main (void)
+{
+
+  {
+  	char *name = malloc(16);
+  	pthread_get_name_np(pthread_self(), name, 16);
+	free(name);
+  }
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"
+then :
+  je_cv_pthread_get_name_np=yes
+else $as_nop
+  je_cv_pthread_get_name_np=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
+    conftest$ac_exeext conftest.$ac_ext
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $je_cv_pthread_get_name_np" >&5
+printf "%s\n" "$je_cv_pthread_get_name_np" >&6; }
+
+  if test "x${je_cv_pthread_get_name_np}" = "xyes" ; then
+
+printf "%s\n" "#define JEMALLOC_HAVE_PTHREAD_GET_NAME_NP  " >>confdefs.h
+
+  fi
+fi
+
+T_APPEND_V=-D_REENTRANT
+  if test "x${CPPFLAGS}" = "x" -o "x${T_APPEND_V}" = "x" ; then
+  CPPFLAGS="${CPPFLAGS}${T_APPEND_V}"
+else
+  CPPFLAGS="${CPPFLAGS} ${T_APPEND_V}"
+fi
+
+
+
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for library containing clock_gettime" >&5
+printf %s "checking for library containing clock_gettime... " >&6; }
+if test ${ac_cv_search_clock_gettime+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  ac_func_search_save_LIBS=$LIBS
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+/* Override any GCC internal prototype to avoid an error.
+   Use char because int might match the return type of a GCC
+   builtin and then its argument prototype would still apply.  */
+char clock_gettime ();
+int
+main (void)
+{
+return clock_gettime ();
+  ;
+  return 0;
+}
+_ACEOF
+for ac_lib in '' rt
+do
+  if test -z "$ac_lib"; then
+    ac_res="none required"
+  else
+    ac_res=-l$ac_lib
+    LIBS="-l$ac_lib  $ac_func_search_save_LIBS"
+  fi
+  if ac_fn_c_try_link "$LINENO"
+then :
+  ac_cv_search_clock_gettime=$ac_res
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
+    conftest$ac_exeext
+  if test ${ac_cv_search_clock_gettime+y}
+then :
+  break
+fi
+done
+if test ${ac_cv_search_clock_gettime+y}
+then :
+
+else $as_nop
+  ac_cv_search_clock_gettime=no
+fi
+rm conftest.$ac_ext
+LIBS=$ac_func_search_save_LIBS
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_search_clock_gettime" >&5
+printf "%s\n" "$ac_cv_search_clock_gettime" >&6; }
+ac_res=$ac_cv_search_clock_gettime
+if test "$ac_res" != no
+then :
+  test "$ac_res" = "none required" || LIBS="$ac_res $LIBS"
+
+fi
+
+
+if test "x$je_cv_cray_prgenv_wrapper" = "xyes" ; then
+  if test "$ac_cv_search_clock_gettime" != "-lrt"; then
+    SAVED_CONFIGURE_CFLAGS="${CONFIGURE_CFLAGS}"
+
+
+    unset ac_cv_search_clock_gettime
+
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether compiler supports -dynamic" >&5
+printf %s "checking whether compiler supports -dynamic... " >&6; }
+T_CONFIGURE_CFLAGS="${CONFIGURE_CFLAGS}"
+T_APPEND_V=-dynamic
+  if test "x${CONFIGURE_CFLAGS}" = "x" -o "x${T_APPEND_V}" = "x" ; then
+  CONFIGURE_CFLAGS="${CONFIGURE_CFLAGS}${T_APPEND_V}"
+else
+  CONFIGURE_CFLAGS="${CONFIGURE_CFLAGS} ${T_APPEND_V}"
+fi
+
+
+if test "x${CONFIGURE_CFLAGS}" = "x" -o "x${SPECIFIED_CFLAGS}" = "x" ; then
+  CFLAGS="${CONFIGURE_CFLAGS}${SPECIFIED_CFLAGS}"
+else
+  CFLAGS="${CONFIGURE_CFLAGS} ${SPECIFIED_CFLAGS}"
+fi
+
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+
+int
+main (void)
+{
+
+    return 0;
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  je_cv_cflags_added=-dynamic
+              { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+printf "%s\n" "yes" >&6; }
+else $as_nop
+  je_cv_cflags_added=
+              { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
+              CONFIGURE_CFLAGS="${T_CONFIGURE_CFLAGS}"
+
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+if test "x${CONFIGURE_CFLAGS}" = "x" -o "x${SPECIFIED_CFLAGS}" = "x" ; then
+  CFLAGS="${CONFIGURE_CFLAGS}${SPECIFIED_CFLAGS}"
+else
+  CFLAGS="${CONFIGURE_CFLAGS} ${SPECIFIED_CFLAGS}"
+fi
+
+
+    { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for library containing clock_gettime" >&5
+printf %s "checking for library containing clock_gettime... " >&6; }
+if test ${ac_cv_search_clock_gettime+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  ac_func_search_save_LIBS=$LIBS
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+/* Override any GCC internal prototype to avoid an error.
+   Use char because int might match the return type of a GCC
+   builtin and then its argument prototype would still apply.  */
+char clock_gettime ();
+int
+main (void)
+{
+return clock_gettime ();
+  ;
+  return 0;
+}
+_ACEOF
+for ac_lib in '' rt
+do
+  if test -z "$ac_lib"; then
+    ac_res="none required"
+  else
+    ac_res=-l$ac_lib
+    LIBS="-l$ac_lib  $ac_func_search_save_LIBS"
+  fi
+  if ac_fn_c_try_link "$LINENO"
+then :
+  ac_cv_search_clock_gettime=$ac_res
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
+    conftest$ac_exeext
+  if test ${ac_cv_search_clock_gettime+y}
+then :
+  break
+fi
+done
+if test ${ac_cv_search_clock_gettime+y}
+then :
+
+else $as_nop
+  ac_cv_search_clock_gettime=no
+fi
+rm conftest.$ac_ext
+LIBS=$ac_func_search_save_LIBS
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_search_clock_gettime" >&5
+printf "%s\n" "$ac_cv_search_clock_gettime" >&6; }
+ac_res=$ac_cv_search_clock_gettime
+if test "$ac_res" != no
+then :
+  test "$ac_res" = "none required" || LIBS="$ac_res $LIBS"
+
+fi
+
+
+    CONFIGURE_CFLAGS="${SAVED_CONFIGURE_CFLAGS}"
+if test "x${CONFIGURE_CFLAGS}" = "x" -o "x${SPECIFIED_CFLAGS}" = "x" ; then
+  CFLAGS="${CONFIGURE_CFLAGS}${SPECIFIED_CFLAGS}"
+else
+  CFLAGS="${CONFIGURE_CFLAGS} ${SPECIFIED_CFLAGS}"
+fi
+
+
+  fi
+fi
+
+
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether clock_gettime(CLOCK_MONOTONIC_COARSE, ...) is compilable" >&5
+printf %s "checking whether clock_gettime(CLOCK_MONOTONIC_COARSE, ...) is compilable... " >&6; }
+if test ${je_cv_clock_monotonic_coarse+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+#include <time.h>
+
+int
+main (void)
+{
+
+	struct timespec ts;
+
+	clock_gettime(CLOCK_MONOTONIC_COARSE, &ts);
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"
+then :
+  je_cv_clock_monotonic_coarse=yes
+else $as_nop
+  je_cv_clock_monotonic_coarse=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
+    conftest$ac_exeext conftest.$ac_ext
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $je_cv_clock_monotonic_coarse" >&5
+printf "%s\n" "$je_cv_clock_monotonic_coarse" >&6; }
+
+if test "x${je_cv_clock_monotonic_coarse}" = "xyes" ; then
+
+printf "%s\n" "#define JEMALLOC_HAVE_CLOCK_MONOTONIC_COARSE  " >>confdefs.h
+
+fi
+
+
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether clock_gettime(CLOCK_MONOTONIC, ...) is compilable" >&5
+printf %s "checking whether clock_gettime(CLOCK_MONOTONIC, ...) is compilable... " >&6; }
+if test ${je_cv_clock_monotonic+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+#include <unistd.h>
+#include <time.h>
+
+int
+main (void)
+{
+
+	struct timespec ts;
+
+	clock_gettime(CLOCK_MONOTONIC, &ts);
+#if !defined(_POSIX_MONOTONIC_CLOCK) || _POSIX_MONOTONIC_CLOCK < 0
+#  error _POSIX_MONOTONIC_CLOCK missing/invalid
+#endif
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"
+then :
+  je_cv_clock_monotonic=yes
+else $as_nop
+  je_cv_clock_monotonic=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
+    conftest$ac_exeext conftest.$ac_ext
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $je_cv_clock_monotonic" >&5
+printf "%s\n" "$je_cv_clock_monotonic" >&6; }
+
+if test "x${je_cv_clock_monotonic}" = "xyes" ; then
+
+printf "%s\n" "#define JEMALLOC_HAVE_CLOCK_MONOTONIC  " >>confdefs.h
+
+fi
+
+
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether mach_absolute_time() is compilable" >&5
+printf %s "checking whether mach_absolute_time() is compilable... " >&6; }
+if test ${je_cv_mach_absolute_time+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+#include <mach/mach_time.h>
+
+int
+main (void)
+{
+
+	mach_absolute_time();
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"
+then :
+  je_cv_mach_absolute_time=yes
+else $as_nop
+  je_cv_mach_absolute_time=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
+    conftest$ac_exeext conftest.$ac_ext
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $je_cv_mach_absolute_time" >&5
+printf "%s\n" "$je_cv_mach_absolute_time" >&6; }
+
+if test "x${je_cv_mach_absolute_time}" = "xyes" ; then
+
+printf "%s\n" "#define JEMALLOC_HAVE_MACH_ABSOLUTE_TIME  " >>confdefs.h
+
+fi
+
+
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether clock_gettime(CLOCK_REALTIME, ...) is compilable" >&5
+printf %s "checking whether clock_gettime(CLOCK_REALTIME, ...) is compilable... " >&6; }
+if test ${je_cv_clock_realtime+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+#include <time.h>
+
+int
+main (void)
+{
+
+	struct timespec ts;
+
+	clock_gettime(CLOCK_REALTIME, &ts);
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"
+then :
+  je_cv_clock_realtime=yes
+else $as_nop
+  je_cv_clock_realtime=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
+    conftest$ac_exeext conftest.$ac_ext
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $je_cv_clock_realtime" >&5
+printf "%s\n" "$je_cv_clock_realtime" >&6; }
+
+if test "x${je_cv_clock_realtime}" = "xyes" ; then
+
+printf "%s\n" "#define JEMALLOC_HAVE_CLOCK_REALTIME  " >>confdefs.h
+
+fi
+
+# Check whether --enable-syscall was given.
+if test ${enable_syscall+y}
+then :
+  enableval=$enable_syscall; if test "x$enable_syscall" = "xno" ; then
+  enable_syscall="0"
+else
+  enable_syscall="1"
+fi
+
+else $as_nop
+  enable_syscall="1"
+
+fi
+
+if test "x$enable_syscall" = "x1" ; then
+      SAVED_CONFIGURE_CFLAGS="${CONFIGURE_CFLAGS}"
+
+
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether compiler supports -Werror" >&5
+printf %s "checking whether compiler supports -Werror... " >&6; }
+T_CONFIGURE_CFLAGS="${CONFIGURE_CFLAGS}"
+T_APPEND_V=-Werror
+  if test "x${CONFIGURE_CFLAGS}" = "x" -o "x${T_APPEND_V}" = "x" ; then
+  CONFIGURE_CFLAGS="${CONFIGURE_CFLAGS}${T_APPEND_V}"
+else
+  CONFIGURE_CFLAGS="${CONFIGURE_CFLAGS} ${T_APPEND_V}"
+fi
+
+
+if test "x${CONFIGURE_CFLAGS}" = "x" -o "x${SPECIFIED_CFLAGS}" = "x" ; then
+  CFLAGS="${CONFIGURE_CFLAGS}${SPECIFIED_CFLAGS}"
+else
+  CFLAGS="${CONFIGURE_CFLAGS} ${SPECIFIED_CFLAGS}"
+fi
+
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+
+int
+main (void)
+{
+
+    return 0;
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  je_cv_cflags_added=-Werror
+              { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+printf "%s\n" "yes" >&6; }
+else $as_nop
+  je_cv_cflags_added=
+              { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
+              CONFIGURE_CFLAGS="${T_CONFIGURE_CFLAGS}"
+
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+if test "x${CONFIGURE_CFLAGS}" = "x" -o "x${SPECIFIED_CFLAGS}" = "x" ; then
+  CFLAGS="${CONFIGURE_CFLAGS}${SPECIFIED_CFLAGS}"
+else
+  CFLAGS="${CONFIGURE_CFLAGS} ${SPECIFIED_CFLAGS}"
+fi
+
+
+
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether syscall(2) is compilable" >&5
+printf %s "checking whether syscall(2) is compilable... " >&6; }
+if test ${je_cv_syscall+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+#include <sys/syscall.h>
+#include <unistd.h>
+
+int
+main (void)
+{
+
+	syscall(SYS_write, 2, "hello", 5);
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"
+then :
+  je_cv_syscall=yes
+else $as_nop
+  je_cv_syscall=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
+    conftest$ac_exeext conftest.$ac_ext
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $je_cv_syscall" >&5
+printf "%s\n" "$je_cv_syscall" >&6; }
+
+  CONFIGURE_CFLAGS="${SAVED_CONFIGURE_CFLAGS}"
+if test "x${CONFIGURE_CFLAGS}" = "x" -o "x${SPECIFIED_CFLAGS}" = "x" ; then
+  CFLAGS="${CONFIGURE_CFLAGS}${SPECIFIED_CFLAGS}"
+else
+  CFLAGS="${CONFIGURE_CFLAGS} ${SPECIFIED_CFLAGS}"
+fi
+
+
+  if test "x$je_cv_syscall" = "xyes" ; then
+
+printf "%s\n" "#define JEMALLOC_USE_SYSCALL  " >>confdefs.h
+
+  fi
+fi
+
+ac_fn_c_check_func "$LINENO" "secure_getenv" "ac_cv_func_secure_getenv"
+if test "x$ac_cv_func_secure_getenv" = xyes
+then :
+  have_secure_getenv="1"
+else $as_nop
+  have_secure_getenv="0"
+
+fi
+
+if test "x$have_secure_getenv" = "x1" ; then
+
+printf "%s\n" "#define JEMALLOC_HAVE_SECURE_GETENV  " >>confdefs.h
+
+fi
+
+ac_fn_c_check_func "$LINENO" "sched_getcpu" "ac_cv_func_sched_getcpu"
+if test "x$ac_cv_func_sched_getcpu" = xyes
+then :
+  have_sched_getcpu="1"
+else $as_nop
+  have_sched_getcpu="0"
+
+fi
+
+if test "x$have_sched_getcpu" = "x1" ; then
+
+printf "%s\n" "#define JEMALLOC_HAVE_SCHED_GETCPU  " >>confdefs.h
+
+fi
+
+ac_fn_c_check_func "$LINENO" "sched_setaffinity" "ac_cv_func_sched_setaffinity"
+if test "x$ac_cv_func_sched_setaffinity" = xyes
+then :
+  have_sched_setaffinity="1"
+else $as_nop
+  have_sched_setaffinity="0"
+
+fi
+
+if test "x$have_sched_setaffinity" = "x1" ; then
+
+printf "%s\n" "#define JEMALLOC_HAVE_SCHED_SETAFFINITY  " >>confdefs.h
+
+fi
+
+ac_fn_c_check_func "$LINENO" "issetugid" "ac_cv_func_issetugid"
+if test "x$ac_cv_func_issetugid" = xyes
+then :
+  have_issetugid="1"
+else $as_nop
+  have_issetugid="0"
+
+fi
+
+if test "x$have_issetugid" = "x1" ; then
+
+printf "%s\n" "#define JEMALLOC_HAVE_ISSETUGID  " >>confdefs.h
+
+fi
+
+ac_fn_c_check_func "$LINENO" "_malloc_thread_cleanup" "ac_cv_func__malloc_thread_cleanup"
+if test "x$ac_cv_func__malloc_thread_cleanup" = xyes
+then :
+  have__malloc_thread_cleanup="1"
+else $as_nop
+  have__malloc_thread_cleanup="0"
+
+fi
+
+if test "x$have__malloc_thread_cleanup" = "x1" ; then
+
+printf "%s\n" "#define JEMALLOC_MALLOC_THREAD_CLEANUP  " >>confdefs.h
+
+  wrap_syms="${wrap_syms} _malloc_thread_cleanup _malloc_tsd_cleanup_register"
+  force_tls="1"
+fi
+
+ac_fn_c_check_func "$LINENO" "_pthread_mutex_init_calloc_cb" "ac_cv_func__pthread_mutex_init_calloc_cb"
+if test "x$ac_cv_func__pthread_mutex_init_calloc_cb" = xyes
+then :
+  have__pthread_mutex_init_calloc_cb="1"
+else $as_nop
+  have__pthread_mutex_init_calloc_cb="0"
+
+fi
+
+if test "x$have__pthread_mutex_init_calloc_cb" = "x1" ; then
+
+printf "%s\n" "#define JEMALLOC_MUTEX_INIT_CB  " >>confdefs.h
+
+  wrap_syms="${wrap_syms} _malloc_prefork _malloc_postfork"
+fi
+
+ac_fn_c_check_func "$LINENO" "memcntl" "ac_cv_func_memcntl"
+if test "x$ac_cv_func_memcntl" = xyes
+then :
+  have_memcntl="1"
+else $as_nop
+  have_memcntl="0"
+fi
+
+if test "x$have_memcntl" = "x1" ; then
+
+printf "%s\n" "#define JEMALLOC_HAVE_MEMCNTL  " >>confdefs.h
+
+fi
+
+# Check whether --enable-lazy_lock was given.
+if test ${enable_lazy_lock+y}
+then :
+  enableval=$enable_lazy_lock; if test "x$enable_lazy_lock" = "xno" ; then
+  enable_lazy_lock="0"
+else
+  enable_lazy_lock="1"
+fi
+
+else $as_nop
+  enable_lazy_lock=""
+
+fi
+
+if test "x${enable_lazy_lock}" = "x" ; then
+  if test "x${force_lazy_lock}" = "x1" ; then
+    { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: Forcing lazy-lock to avoid allocator/threading bootstrap issues" >&5
+printf "%s\n" "Forcing lazy-lock to avoid allocator/threading bootstrap issues" >&6; }
+    enable_lazy_lock="1"
+  else
+    enable_lazy_lock="0"
+  fi
+fi
+if test "x${enable_lazy_lock}" = "x1" -a "x${abi}" = "xpecoff" ; then
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: Forcing no lazy-lock because thread creation monitoring is unimplemented" >&5
+printf "%s\n" "Forcing no lazy-lock because thread creation monitoring is unimplemented" >&6; }
+  enable_lazy_lock="0"
+fi
+if test "x$enable_lazy_lock" = "x1" ; then
+  if test "x$have_dlsym" = "x1" ; then
+
+printf "%s\n" "#define JEMALLOC_LAZY_LOCK  " >>confdefs.h
+
+  else
+    as_fn_error $? "Missing dlsym support: lazy-lock cannot be enabled." "$LINENO" 5
+  fi
+fi
+
+
+if test "x${force_tls}" = "x1" ; then
+  enable_tls="1"
+elif test "x${force_tls}" = "x0" ; then
+  enable_tls="0"
+else
+  enable_tls="1"
+fi
+if test "x${enable_tls}" = "x1" ; then
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for TLS" >&5
+printf %s "checking for TLS... " >&6; }
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+    __thread int x;
+
+int
+main (void)
+{
+
+    x = 42;
+
+    return 0;
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+printf "%s\n" "yes" >&6; }
+else $as_nop
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
+              enable_tls="0"
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+else
+  enable_tls="0"
+fi
+
+if test "x${enable_tls}" = "x1" ; then
+
+printf "%s\n" "#define JEMALLOC_TLS  " >>confdefs.h
+
+fi
+
+
+
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether C11 atomics is compilable" >&5
+printf %s "checking whether C11 atomics is compilable... " >&6; }
+if test ${je_cv_c11_atomics+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+#include <stdint.h>
+#if (__STDC_VERSION__ >= 201112L) && !defined(__STDC_NO_ATOMICS__)
+#include <stdatomic.h>
+#else
+#error Atomics not available
+#endif
+
+int
+main (void)
+{
+
+    uint64_t *p = (uint64_t *)0;
+    uint64_t x = 1;
+    volatile atomic_uint_least64_t *a = (volatile atomic_uint_least64_t *)p;
+    uint64_t r = atomic_fetch_add(a, x) + x;
+    return r == 0;
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"
+then :
+  je_cv_c11_atomics=yes
+else $as_nop
+  je_cv_c11_atomics=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
+    conftest$ac_exeext conftest.$ac_ext
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $je_cv_c11_atomics" >&5
+printf "%s\n" "$je_cv_c11_atomics" >&6; }
+
+if test "x${je_cv_c11_atomics}" = "xyes" ; then
+
+printf "%s\n" "#define JEMALLOC_C11_ATOMICS  " >>confdefs.h
+
+fi
+
+
+
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether GCC __atomic atomics is compilable" >&5
+printf %s "checking whether GCC __atomic atomics is compilable... " >&6; }
+if test ${je_cv_gcc_atomic_atomics+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+
+int
+main (void)
+{
+
+    int x = 0;
+    int val = 1;
+    int y = __atomic_fetch_add(&x, val, __ATOMIC_RELAXED);
+    int after_add = x;
+    return after_add == 1;
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"
+then :
+  je_cv_gcc_atomic_atomics=yes
+else $as_nop
+  je_cv_gcc_atomic_atomics=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
+    conftest$ac_exeext conftest.$ac_ext
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $je_cv_gcc_atomic_atomics" >&5
+printf "%s\n" "$je_cv_gcc_atomic_atomics" >&6; }
+
+if test "x${je_cv_gcc_atomic_atomics}" = "xyes" ; then
+
+printf "%s\n" "#define JEMALLOC_GCC_ATOMIC_ATOMICS  " >>confdefs.h
+
+
+
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether GCC 8-bit __atomic atomics is compilable" >&5
+printf %s "checking whether GCC 8-bit __atomic atomics is compilable... " >&6; }
+if test ${je_cv_gcc_u8_atomic_atomics+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+
+int
+main (void)
+{
+
+      unsigned char x = 0;
+      int val = 1;
+      int y = __atomic_fetch_add(&x, val, __ATOMIC_RELAXED);
+      int after_add = (int)x;
+      return after_add == 1;
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"
+then :
+  je_cv_gcc_u8_atomic_atomics=yes
+else $as_nop
+  je_cv_gcc_u8_atomic_atomics=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
+    conftest$ac_exeext conftest.$ac_ext
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $je_cv_gcc_u8_atomic_atomics" >&5
+printf "%s\n" "$je_cv_gcc_u8_atomic_atomics" >&6; }
+
+  if test "x${je_cv_gcc_u8_atomic_atomics}" = "xyes" ; then
+
+printf "%s\n" "#define JEMALLOC_GCC_U8_ATOMIC_ATOMICS  " >>confdefs.h
+
+  fi
+fi
+
+
+
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether GCC __sync atomics is compilable" >&5
+printf %s "checking whether GCC __sync atomics is compilable... " >&6; }
+if test ${je_cv_gcc_sync_atomics+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+
+int
+main (void)
+{
+
+    int x = 0;
+    int before_add = __sync_fetch_and_add(&x, 1);
+    int after_add = x;
+    return (before_add == 0) && (after_add == 1);
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"
+then :
+  je_cv_gcc_sync_atomics=yes
+else $as_nop
+  je_cv_gcc_sync_atomics=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
+    conftest$ac_exeext conftest.$ac_ext
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $je_cv_gcc_sync_atomics" >&5
+printf "%s\n" "$je_cv_gcc_sync_atomics" >&6; }
+
+if test "x${je_cv_gcc_sync_atomics}" = "xyes" ; then
+
+printf "%s\n" "#define JEMALLOC_GCC_SYNC_ATOMICS  " >>confdefs.h
+
+
+
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether GCC 8-bit __sync atomics is compilable" >&5
+printf %s "checking whether GCC 8-bit __sync atomics is compilable... " >&6; }
+if test ${je_cv_gcc_u8_sync_atomics+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+
+int
+main (void)
+{
+
+      unsigned char x = 0;
+      int before_add = __sync_fetch_and_add(&x, 1);
+      int after_add = (int)x;
+      return (before_add == 0) && (after_add == 1);
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"
+then :
+  je_cv_gcc_u8_sync_atomics=yes
+else $as_nop
+  je_cv_gcc_u8_sync_atomics=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
+    conftest$ac_exeext conftest.$ac_ext
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $je_cv_gcc_u8_sync_atomics" >&5
+printf "%s\n" "$je_cv_gcc_u8_sync_atomics" >&6; }
+
+  if test "x${je_cv_gcc_u8_sync_atomics}" = "xyes" ; then
+
+printf "%s\n" "#define JEMALLOC_GCC_U8_SYNC_ATOMICS  " >>confdefs.h
+
+  fi
+fi
+
+
+
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether Darwin OSAtomic*() is compilable" >&5
+printf %s "checking whether Darwin OSAtomic*() is compilable... " >&6; }
+if test ${je_cv_osatomic+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+#include <libkern/OSAtomic.h>
+#include <inttypes.h>
+
+int
+main (void)
+{
+
+	{
+		int32_t x32 = 0;
+		volatile int32_t *x32p = &x32;
+		OSAtomicAdd32(1, x32p);
+	}
+	{
+		int64_t x64 = 0;
+		volatile int64_t *x64p = &x64;
+		OSAtomicAdd64(1, x64p);
+	}
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"
+then :
+  je_cv_osatomic=yes
+else $as_nop
+  je_cv_osatomic=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
+    conftest$ac_exeext conftest.$ac_ext
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $je_cv_osatomic" >&5
+printf "%s\n" "$je_cv_osatomic" >&6; }
+
+if test "x${je_cv_osatomic}" = "xyes" ; then
+
+printf "%s\n" "#define JEMALLOC_OSATOMIC  " >>confdefs.h
+
+fi
+
+
+
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether madvise(2) is compilable" >&5
+printf %s "checking whether madvise(2) is compilable... " >&6; }
+if test ${je_cv_madvise+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+#include <sys/mman.h>
+
+int
+main (void)
+{
+
+	madvise((void *)0, 0, 0);
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"
+then :
+  je_cv_madvise=yes
+else $as_nop
+  je_cv_madvise=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
+    conftest$ac_exeext conftest.$ac_ext
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $je_cv_madvise" >&5
+printf "%s\n" "$je_cv_madvise" >&6; }
+
+if test "x${je_cv_madvise}" = "xyes" ; then
+
+printf "%s\n" "#define JEMALLOC_HAVE_MADVISE  " >>confdefs.h
+
+
+
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether madvise(..., MADV_FREE) is compilable" >&5
+printf %s "checking whether madvise(..., MADV_FREE) is compilable... " >&6; }
+if test ${je_cv_madv_free+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+#include <sys/mman.h>
+
+int
+main (void)
+{
+
+	madvise((void *)0, 0, MADV_FREE);
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"
+then :
+  je_cv_madv_free=yes
+else $as_nop
+  je_cv_madv_free=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
+    conftest$ac_exeext conftest.$ac_ext
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $je_cv_madv_free" >&5
+printf "%s\n" "$je_cv_madv_free" >&6; }
+
+  if test "x${je_cv_madv_free}" = "xyes" ; then
+
+printf "%s\n" "#define JEMALLOC_PURGE_MADVISE_FREE  " >>confdefs.h
+
+  elif test "x${je_cv_madvise}" = "xyes" ; then
+    case "${host_cpu}" in i686|x86_64)
+        case "${host}" in *-*-linux*)
+
+printf "%s\n" "#define JEMALLOC_PURGE_MADVISE_FREE  " >>confdefs.h
+
+
+printf "%s\n" "#define JEMALLOC_DEFINE_MADVISE_FREE  " >>confdefs.h
+
+	    ;;
+        esac
+        ;;
+    esac
+  fi
+
+
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether madvise(..., MADV_DONTNEED) is compilable" >&5
+printf %s "checking whether madvise(..., MADV_DONTNEED) is compilable... " >&6; }
+if test ${je_cv_madv_dontneed+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+#include <sys/mman.h>
+
+int
+main (void)
+{
+
+	madvise((void *)0, 0, MADV_DONTNEED);
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"
+then :
+  je_cv_madv_dontneed=yes
+else $as_nop
+  je_cv_madv_dontneed=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
+    conftest$ac_exeext conftest.$ac_ext
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $je_cv_madv_dontneed" >&5
+printf "%s\n" "$je_cv_madv_dontneed" >&6; }
+
+  if test "x${je_cv_madv_dontneed}" = "xyes" ; then
+
+printf "%s\n" "#define JEMALLOC_PURGE_MADVISE_DONTNEED  " >>confdefs.h
+
+  fi
+
+
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether madvise(..., MADV_DO[NT]DUMP) is compilable" >&5
+printf %s "checking whether madvise(..., MADV_DO[NT]DUMP) is compilable... " >&6; }
+if test ${je_cv_madv_dontdump+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+#include <sys/mman.h>
+
+int
+main (void)
+{
+
+	madvise((void *)0, 0, MADV_DONTDUMP);
+	madvise((void *)0, 0, MADV_DODUMP);
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"
+then :
+  je_cv_madv_dontdump=yes
+else $as_nop
+  je_cv_madv_dontdump=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
+    conftest$ac_exeext conftest.$ac_ext
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $je_cv_madv_dontdump" >&5
+printf "%s\n" "$je_cv_madv_dontdump" >&6; }
+
+  if test "x${je_cv_madv_dontdump}" = "xyes" ; then
+
+printf "%s\n" "#define JEMALLOC_MADVISE_DONTDUMP  " >>confdefs.h
+
+  fi
+
+
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether madvise(..., MADV_[NO]HUGEPAGE) is compilable" >&5
+printf %s "checking whether madvise(..., MADV_[NO]HUGEPAGE) is compilable... " >&6; }
+if test ${je_cv_thp+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+#include <sys/mman.h>
+
+int
+main (void)
+{
+
+	madvise((void *)0, 0, MADV_HUGEPAGE);
+	madvise((void *)0, 0, MADV_NOHUGEPAGE);
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"
+then :
+  je_cv_thp=yes
+else $as_nop
+  je_cv_thp=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
+    conftest$ac_exeext conftest.$ac_ext
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $je_cv_thp" >&5
+printf "%s\n" "$je_cv_thp" >&6; }
+
+
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether madvise(..., MADV_[NO]CORE) is compilable" >&5
+printf %s "checking whether madvise(..., MADV_[NO]CORE) is compilable... " >&6; }
+if test ${je_cv_madv_nocore+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+#include <sys/mman.h>
+
+int
+main (void)
+{
+
+	madvise((void *)0, 0, MADV_NOCORE);
+	madvise((void *)0, 0, MADV_CORE);
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"
+then :
+  je_cv_madv_nocore=yes
+else $as_nop
+  je_cv_madv_nocore=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
+    conftest$ac_exeext conftest.$ac_ext
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $je_cv_madv_nocore" >&5
+printf "%s\n" "$je_cv_madv_nocore" >&6; }
+
+  if test "x${je_cv_madv_nocore}" = "xyes" ; then
+
+printf "%s\n" "#define JEMALLOC_MADVISE_NOCORE  " >>confdefs.h
+
+  fi
+case "${host_cpu}" in
+  arm*)
+    ;;
+  *)
+  if test "x${je_cv_thp}" = "xyes" ; then
+
+printf "%s\n" "#define JEMALLOC_HAVE_MADVISE_HUGE  " >>confdefs.h
+
+  fi
+  ;;
+esac
+else
+
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether posix_madvise is compilable" >&5
+printf %s "checking whether posix_madvise is compilable... " >&6; }
+if test ${je_cv_posix_madvise+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+  #include <sys/mman.h>
+
+int
+main (void)
+{
+
+    posix_madvise((void *)0, 0, 0);
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"
+then :
+  je_cv_posix_madvise=yes
+else $as_nop
+  je_cv_posix_madvise=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
+    conftest$ac_exeext conftest.$ac_ext
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $je_cv_posix_madvise" >&5
+printf "%s\n" "$je_cv_posix_madvise" >&6; }
+
+  if test "x${je_cv_posix_madvise}" = "xyes" ; then
+
+printf "%s\n" "#define JEMALLOC_HAVE_POSIX_MADVISE  " >>confdefs.h
+
+
+
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether posix_madvise(..., POSIX_MADV_DONTNEED) is compilable" >&5
+printf %s "checking whether posix_madvise(..., POSIX_MADV_DONTNEED) is compilable... " >&6; }
+if test ${je_cv_posix_madv_dontneed+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+  #include <sys/mman.h>
+
+int
+main (void)
+{
+
+    posix_madvise((void *)0, 0, POSIX_MADV_DONTNEED);
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"
+then :
+  je_cv_posix_madv_dontneed=yes
+else $as_nop
+  je_cv_posix_madv_dontneed=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
+    conftest$ac_exeext conftest.$ac_ext
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $je_cv_posix_madv_dontneed" >&5
+printf "%s\n" "$je_cv_posix_madv_dontneed" >&6; }
+
+    if test "x${je_cv_posix_madv_dontneed}" = "xyes" ; then
+
+printf "%s\n" "#define JEMALLOC_PURGE_POSIX_MADVISE_DONTNEED  " >>confdefs.h
+
+    fi
+  fi
+fi
+
+
+
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether mprotect(2) is compilable" >&5
+printf %s "checking whether mprotect(2) is compilable... " >&6; }
+if test ${je_cv_mprotect+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+#include <sys/mman.h>
+
+int
+main (void)
+{
+
+	mprotect((void *)0, 0, PROT_NONE);
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"
+then :
+  je_cv_mprotect=yes
+else $as_nop
+  je_cv_mprotect=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
+    conftest$ac_exeext conftest.$ac_ext
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $je_cv_mprotect" >&5
+printf "%s\n" "$je_cv_mprotect" >&6; }
+
+if test "x${je_cv_mprotect}" = "xyes" ; then
+
+printf "%s\n" "#define JEMALLOC_HAVE_MPROTECT  " >>confdefs.h
+
+fi
+
+
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for __builtin_clz" >&5
+printf %s "checking for __builtin_clz... " >&6; }
+if test ${je_cv_builtin_clz+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+int
+main (void)
+{
+
+                                                {
+                                                        unsigned x = 0;
+                                                        int y = __builtin_clz(x);
+                                                }
+                                                {
+                                                        unsigned long x = 0;
+                                                        int y = __builtin_clzl(x);
+                                                }
+                                                {
+                                                        unsigned long long x = 0;
+                                                        int y = __builtin_clzll(x);
+                                                }
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"
+then :
+  je_cv_builtin_clz=yes
+else $as_nop
+  je_cv_builtin_clz=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
+    conftest$ac_exeext conftest.$ac_ext
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $je_cv_builtin_clz" >&5
+printf "%s\n" "$je_cv_builtin_clz" >&6; }
+
+if test "x${je_cv_builtin_clz}" = "xyes" ; then
+
+printf "%s\n" "#define JEMALLOC_HAVE_BUILTIN_CLZ  " >>confdefs.h
+
+fi
+
+
+
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether Darwin os_unfair_lock_*() is compilable" >&5
+printf %s "checking whether Darwin os_unfair_lock_*() is compilable... " >&6; }
+if test ${je_cv_os_unfair_lock+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+#include <os/lock.h>
+#include <AvailabilityMacros.h>
+
+int
+main (void)
+{
+
+	#if MAC_OS_X_VERSION_MIN_REQUIRED < 101200
+	#error "os_unfair_lock is not supported"
+	#else
+	os_unfair_lock lock = OS_UNFAIR_LOCK_INIT;
+	os_unfair_lock_lock(&lock);
+	os_unfair_lock_unlock(&lock);
+	#endif
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"
+then :
+  je_cv_os_unfair_lock=yes
+else $as_nop
+  je_cv_os_unfair_lock=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
+    conftest$ac_exeext conftest.$ac_ext
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $je_cv_os_unfair_lock" >&5
+printf "%s\n" "$je_cv_os_unfair_lock" >&6; }
+
+if test "x${je_cv_os_unfair_lock}" = "xyes" ; then
+
+printf "%s\n" "#define JEMALLOC_OS_UNFAIR_LOCK  " >>confdefs.h
+
+fi
+
+
+# Check whether --enable-zone-allocator was given.
+if test ${enable_zone_allocator+y}
+then :
+  enableval=$enable_zone_allocator; if test "x$enable_zone_allocator" = "xno" ; then
+  enable_zone_allocator="0"
+else
+  enable_zone_allocator="1"
+fi
+
+else $as_nop
+  if test "x${abi}" = "xmacho"; then
+  enable_zone_allocator="1"
+fi
+
+
+fi
+
+
+
+if test "x${enable_zone_allocator}" = "x1" ; then
+  if test "x${abi}" != "xmacho"; then
+    as_fn_error $? "--enable-zone-allocator is only supported on Darwin" "$LINENO" 5
+  fi
+
+printf "%s\n" "#define JEMALLOC_ZONE  " >>confdefs.h
+
+fi
+
+# Check whether --enable-initial-exec-tls was given.
+if test ${enable_initial_exec_tls+y}
+then :
+  enableval=$enable_initial_exec_tls; if test "x$enable_initial_exec_tls" = "xno" ; then
+  enable_initial_exec_tls="0"
+else
+  enable_initial_exec_tls="1"
+fi
+
+else $as_nop
+  enable_initial_exec_tls="1"
+
+fi
+
+
+
+if test "x${je_cv_tls_model}" = "xyes" -a \
+       "x${enable_initial_exec_tls}" = "x1" ; then
+
+printf "%s\n" "#define JEMALLOC_TLS_MODEL __attribute__((tls_model(\"initial-exec\")))" >>confdefs.h
+
+else
+
+printf "%s\n" "#define JEMALLOC_TLS_MODEL  " >>confdefs.h
+
+fi
+
+
+if test "x${have_pthread}" = "x1" -a "x${je_cv_os_unfair_lock}" != "xyes" -a \
+       "x${abi}" != "xmacho" ; then
+
+printf "%s\n" "#define JEMALLOC_BACKGROUND_THREAD  " >>confdefs.h
+
+fi
+
+
+if test "x$glibc" = "x1" ; then
+
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether glibc malloc hook is compilable" >&5
+printf %s "checking whether glibc malloc hook is compilable... " >&6; }
+if test ${je_cv_glibc_malloc_hook+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+  #include <stddef.h>
+
+  extern void (* __free_hook)(void *ptr);
+  extern void *(* __malloc_hook)(size_t size);
+  extern void *(* __realloc_hook)(void *ptr, size_t size);
+
+int
+main (void)
+{
+
+    void *ptr = 0L;
+    if (__malloc_hook) ptr = __malloc_hook(1);
+    if (__realloc_hook) ptr = __realloc_hook(ptr, 2);
+    if (__free_hook && ptr) __free_hook(ptr);
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"
+then :
+  je_cv_glibc_malloc_hook=yes
+else $as_nop
+  je_cv_glibc_malloc_hook=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
+    conftest$ac_exeext conftest.$ac_ext
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $je_cv_glibc_malloc_hook" >&5
+printf "%s\n" "$je_cv_glibc_malloc_hook" >&6; }
+
+  if test "x${je_cv_glibc_malloc_hook}" = "xyes" ; then
+    if test "x${JEMALLOC_PREFIX}" = "x" ; then
+
+printf "%s\n" "#define JEMALLOC_GLIBC_MALLOC_HOOK  " >>confdefs.h
+
+      wrap_syms="${wrap_syms} __free_hook __malloc_hook __realloc_hook"
+    fi
+  fi
+
+
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether glibc memalign hook is compilable" >&5
+printf %s "checking whether glibc memalign hook is compilable... " >&6; }
+if test ${je_cv_glibc_memalign_hook+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+  #include <stddef.h>
+
+  extern void *(* __memalign_hook)(size_t alignment, size_t size);
+
+int
+main (void)
+{
+
+    void *ptr = 0L;
+    if (__memalign_hook) ptr = __memalign_hook(16, 7);
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"
+then :
+  je_cv_glibc_memalign_hook=yes
+else $as_nop
+  je_cv_glibc_memalign_hook=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
+    conftest$ac_exeext conftest.$ac_ext
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $je_cv_glibc_memalign_hook" >&5
+printf "%s\n" "$je_cv_glibc_memalign_hook" >&6; }
+
+  if test "x${je_cv_glibc_memalign_hook}" = "xyes" ; then
+    if test "x${JEMALLOC_PREFIX}" = "x" ; then
+
+printf "%s\n" "#define JEMALLOC_GLIBC_MEMALIGN_HOOK  " >>confdefs.h
+
+      wrap_syms="${wrap_syms} __memalign_hook"
+    fi
+  fi
+fi
+
+
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether pthreads adaptive mutexes is compilable" >&5
+printf %s "checking whether pthreads adaptive mutexes is compilable... " >&6; }
+if test ${je_cv_pthread_mutex_adaptive_np+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+#include <pthread.h>
+
+int
+main (void)
+{
+
+  pthread_mutexattr_t attr;
+  pthread_mutexattr_init(&attr);
+  pthread_mutexattr_settype(&attr, PTHREAD_MUTEX_ADAPTIVE_NP);
+  pthread_mutexattr_destroy(&attr);
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"
+then :
+  je_cv_pthread_mutex_adaptive_np=yes
+else $as_nop
+  je_cv_pthread_mutex_adaptive_np=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
+    conftest$ac_exeext conftest.$ac_ext
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $je_cv_pthread_mutex_adaptive_np" >&5
+printf "%s\n" "$je_cv_pthread_mutex_adaptive_np" >&6; }
+
+if test "x${je_cv_pthread_mutex_adaptive_np}" = "xyes" ; then
+
+printf "%s\n" "#define JEMALLOC_HAVE_PTHREAD_MUTEX_ADAPTIVE_NP  " >>confdefs.h
+
+fi
+
+SAVED_CONFIGURE_CFLAGS="${CONFIGURE_CFLAGS}"
+
+
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether compiler supports -D_GNU_SOURCE" >&5
+printf %s "checking whether compiler supports -D_GNU_SOURCE... " >&6; }
+T_CONFIGURE_CFLAGS="${CONFIGURE_CFLAGS}"
+T_APPEND_V=-D_GNU_SOURCE
+  if test "x${CONFIGURE_CFLAGS}" = "x" -o "x${T_APPEND_V}" = "x" ; then
+  CONFIGURE_CFLAGS="${CONFIGURE_CFLAGS}${T_APPEND_V}"
+else
+  CONFIGURE_CFLAGS="${CONFIGURE_CFLAGS} ${T_APPEND_V}"
+fi
+
+
+if test "x${CONFIGURE_CFLAGS}" = "x" -o "x${SPECIFIED_CFLAGS}" = "x" ; then
+  CFLAGS="${CONFIGURE_CFLAGS}${SPECIFIED_CFLAGS}"
+else
+  CFLAGS="${CONFIGURE_CFLAGS} ${SPECIFIED_CFLAGS}"
+fi
+
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+
+int
+main (void)
+{
+
+    return 0;
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  je_cv_cflags_added=-D_GNU_SOURCE
+              { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+printf "%s\n" "yes" >&6; }
+else $as_nop
+  je_cv_cflags_added=
+              { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
+              CONFIGURE_CFLAGS="${T_CONFIGURE_CFLAGS}"
+
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+if test "x${CONFIGURE_CFLAGS}" = "x" -o "x${SPECIFIED_CFLAGS}" = "x" ; then
+  CFLAGS="${CONFIGURE_CFLAGS}${SPECIFIED_CFLAGS}"
+else
+  CFLAGS="${CONFIGURE_CFLAGS} ${SPECIFIED_CFLAGS}"
+fi
+
+
+
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether compiler supports -Werror" >&5
+printf %s "checking whether compiler supports -Werror... " >&6; }
+T_CONFIGURE_CFLAGS="${CONFIGURE_CFLAGS}"
+T_APPEND_V=-Werror
+  if test "x${CONFIGURE_CFLAGS}" = "x" -o "x${T_APPEND_V}" = "x" ; then
+  CONFIGURE_CFLAGS="${CONFIGURE_CFLAGS}${T_APPEND_V}"
+else
+  CONFIGURE_CFLAGS="${CONFIGURE_CFLAGS} ${T_APPEND_V}"
+fi
+
+
+if test "x${CONFIGURE_CFLAGS}" = "x" -o "x${SPECIFIED_CFLAGS}" = "x" ; then
+  CFLAGS="${CONFIGURE_CFLAGS}${SPECIFIED_CFLAGS}"
+else
+  CFLAGS="${CONFIGURE_CFLAGS} ${SPECIFIED_CFLAGS}"
+fi
+
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+
+int
+main (void)
+{
+
+    return 0;
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  je_cv_cflags_added=-Werror
+              { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+printf "%s\n" "yes" >&6; }
+else $as_nop
+  je_cv_cflags_added=
+              { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
+              CONFIGURE_CFLAGS="${T_CONFIGURE_CFLAGS}"
+
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+if test "x${CONFIGURE_CFLAGS}" = "x" -o "x${SPECIFIED_CFLAGS}" = "x" ; then
+  CFLAGS="${CONFIGURE_CFLAGS}${SPECIFIED_CFLAGS}"
+else
+  CFLAGS="${CONFIGURE_CFLAGS} ${SPECIFIED_CFLAGS}"
+fi
+
+
+
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether compiler supports -herror_on_warning" >&5
+printf %s "checking whether compiler supports -herror_on_warning... " >&6; }
+T_CONFIGURE_CFLAGS="${CONFIGURE_CFLAGS}"
+T_APPEND_V=-herror_on_warning
+  if test "x${CONFIGURE_CFLAGS}" = "x" -o "x${T_APPEND_V}" = "x" ; then
+  CONFIGURE_CFLAGS="${CONFIGURE_CFLAGS}${T_APPEND_V}"
+else
+  CONFIGURE_CFLAGS="${CONFIGURE_CFLAGS} ${T_APPEND_V}"
+fi
+
+
+if test "x${CONFIGURE_CFLAGS}" = "x" -o "x${SPECIFIED_CFLAGS}" = "x" ; then
+  CFLAGS="${CONFIGURE_CFLAGS}${SPECIFIED_CFLAGS}"
+else
+  CFLAGS="${CONFIGURE_CFLAGS} ${SPECIFIED_CFLAGS}"
+fi
+
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+
+int
+main (void)
+{
+
+    return 0;
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  je_cv_cflags_added=-herror_on_warning
+              { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+printf "%s\n" "yes" >&6; }
+else $as_nop
+  je_cv_cflags_added=
+              { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
+              CONFIGURE_CFLAGS="${T_CONFIGURE_CFLAGS}"
+
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+if test "x${CONFIGURE_CFLAGS}" = "x" -o "x${SPECIFIED_CFLAGS}" = "x" ; then
+  CFLAGS="${CONFIGURE_CFLAGS}${SPECIFIED_CFLAGS}"
+else
+  CFLAGS="${CONFIGURE_CFLAGS} ${SPECIFIED_CFLAGS}"
+fi
+
+
+
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether strerror_r returns char with gnu source is compilable" >&5
+printf %s "checking whether strerror_r returns char with gnu source is compilable... " >&6; }
+if test ${je_cv_strerror_r_returns_char_with_gnu_source+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+#include <errno.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+int
+main (void)
+{
+
+  char *buffer = (char *) malloc(100);
+  char *error = strerror_r(EINVAL, buffer, 100);
+  printf("%s\n", error);
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"
+then :
+  je_cv_strerror_r_returns_char_with_gnu_source=yes
+else $as_nop
+  je_cv_strerror_r_returns_char_with_gnu_source=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam \
+    conftest$ac_exeext conftest.$ac_ext
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $je_cv_strerror_r_returns_char_with_gnu_source" >&5
+printf "%s\n" "$je_cv_strerror_r_returns_char_with_gnu_source" >&6; }
+
+CONFIGURE_CFLAGS="${SAVED_CONFIGURE_CFLAGS}"
+if test "x${CONFIGURE_CFLAGS}" = "x" -o "x${SPECIFIED_CFLAGS}" = "x" ; then
+  CFLAGS="${CONFIGURE_CFLAGS}${SPECIFIED_CFLAGS}"
+else
+  CFLAGS="${CONFIGURE_CFLAGS} ${SPECIFIED_CFLAGS}"
+fi
+
+
+if test "x${je_cv_strerror_r_returns_char_with_gnu_source}" = "xyes" ; then
+
+printf "%s\n" "#define JEMALLOC_STRERROR_R_RETURNS_CHAR_WITH_GNU_SOURCE  " >>confdefs.h
+
+fi
+
+ac_fn_c_check_type "$LINENO" "_Bool" "ac_cv_type__Bool" "$ac_includes_default"
+if test "x$ac_cv_type__Bool" = xyes
+then :
+
+printf "%s\n" "#define HAVE__BOOL 1" >>confdefs.h
+
+
+fi
+
+   { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for stdbool.h that conforms to C99" >&5
+printf %s "checking for stdbool.h that conforms to C99... " >&6; }
+if test ${ac_cv_header_stdbool_h+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <stdbool.h>
+
+             #ifndef __bool_true_false_are_defined
+               #error "__bool_true_false_are_defined is not defined"
+             #endif
+             char a[__bool_true_false_are_defined == 1 ? 1 : -1];
+
+             /* Regardless of whether this is C++ or "_Bool" is a
+                valid type name, "true" and "false" should be usable
+                in #if expressions and integer constant expressions,
+                and "bool" should be a valid type name.  */
+
+             #if !true
+               #error "'true' is not true"
+             #endif
+             #if true != 1
+               #error "'true' is not equal to 1"
+             #endif
+             char b[true == 1 ? 1 : -1];
+             char c[true];
+
+             #if false
+               #error "'false' is not false"
+             #endif
+             #if false != 0
+               #error "'false' is not equal to 0"
+             #endif
+             char d[false == 0 ? 1 : -1];
+
+             enum { e = false, f = true, g = false * true, h = true * 256 };
+
+             char i[(bool) 0.5 == true ? 1 : -1];
+             char j[(bool) 0.0 == false ? 1 : -1];
+             char k[sizeof (bool) > 0 ? 1 : -1];
+
+             struct sb { bool s: 1; bool t; } s;
+             char l[sizeof s.t > 0 ? 1 : -1];
+
+             /* The following fails for
+                HP aC++/ANSI C B3910B A.05.55 [Dec 04 2003]. */
+             bool m[h];
+             char n[sizeof m == h * sizeof m[0] ? 1 : -1];
+             char o[-1 - (bool) 0 < 0 ? 1 : -1];
+             /* Catch a bug in an HP-UX C compiler.  See
+         https://gcc.gnu.org/ml/gcc-patches/2003-12/msg02303.html
+         https://lists.gnu.org/archive/html/bug-coreutils/2005-11/msg00161.html
+              */
+             bool p = true;
+             bool *pp = &p;
+
+             /* C 1999 specifies that bool, true, and false are to be
+                macros, but C++ 2011 and later overrule this.  */
+             #if __cplusplus < 201103
+              #ifndef bool
+               #error "bool is not defined"
+              #endif
+              #ifndef false
+               #error "false is not defined"
+              #endif
+              #ifndef true
+               #error "true is not defined"
+              #endif
+             #endif
+
+             /* If _Bool is available, repeat with it all the tests
+                above that used bool.  */
+             #ifdef HAVE__BOOL
+               struct sB { _Bool s: 1; _Bool t; } t;
+
+               char q[(_Bool) 0.5 == true ? 1 : -1];
+               char r[(_Bool) 0.0 == false ? 1 : -1];
+               char u[sizeof (_Bool) > 0 ? 1 : -1];
+               char v[sizeof t.t > 0 ? 1 : -1];
+
+               _Bool w[h];
+               char x[sizeof m == h * sizeof m[0] ? 1 : -1];
+               char y[-1 - (_Bool) 0 < 0 ? 1 : -1];
+               _Bool z = true;
+               _Bool *pz = &p;
+             #endif
+
+int
+main (void)
+{
+
+             bool ps = &s;
+             *pp |= p;
+             *pp |= ! p;
+
+             #ifdef HAVE__BOOL
+               _Bool pt = &t;
+               *pz |= z;
+               *pz |= ! z;
+             #endif
+
+             /* Refer to every declared value, so they cannot be
+                discarded as unused.  */
+             return (!a + !b + !c + !d + !e + !f + !g + !h + !i + !j + !k
+                     + !l + !m + !n + !o + !p + !pp + !ps
+             #ifdef HAVE__BOOL
+                     + !q + !r + !u + !v + !w + !x + !y + !z + !pt
+             #endif
+                    );
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"
+then :
+  ac_cv_header_stdbool_h=yes
+else $as_nop
+  ac_cv_header_stdbool_h=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_header_stdbool_h" >&5
+printf "%s\n" "$ac_cv_header_stdbool_h" >&6; }
+
+if test $ac_cv_header_stdbool_h = yes; then
+
+printf "%s\n" "#define HAVE_STDBOOL_H 1" >>confdefs.h
+
+fi
+
+
+
+ac_config_commands="$ac_config_commands include/jemalloc/internal/public_symbols.txt"
+
+ac_config_commands="$ac_config_commands include/jemalloc/internal/private_symbols.awk"
+
+ac_config_commands="$ac_config_commands include/jemalloc/internal/private_symbols_jet.awk"
+
+ac_config_commands="$ac_config_commands include/jemalloc/internal/public_namespace.h"
+
+ac_config_commands="$ac_config_commands include/jemalloc/internal/public_unnamespace.h"
+
+ac_config_commands="$ac_config_commands include/jemalloc/jemalloc_protos_jet.h"
+
+ac_config_commands="$ac_config_commands include/jemalloc/jemalloc_rename.h"
+
+ac_config_commands="$ac_config_commands include/jemalloc/jemalloc_mangle.h"
+
+ac_config_commands="$ac_config_commands include/jemalloc/jemalloc_mangle_jet.h"
+
+ac_config_commands="$ac_config_commands include/jemalloc/jemalloc.h"
+
+
+
+
+ac_config_headers="$ac_config_headers $cfghdrs_tup"
+
+
+
+ac_config_files="$ac_config_files $cfgoutputs_tup config.stamp bin/jemalloc-config bin/jemalloc.sh bin/jeprof"
+
+
+
+cat >confcache <<\_ACEOF
+# This file is a shell script that caches the results of configure
+# tests run on this system so they can be shared between configure
+# scripts and configure runs, see configure's option --config-cache.
+# It is not useful on other systems.  If it contains results you don't
+# want to keep, you may remove or edit it.
+#
+# config.status only pays attention to the cache file if you give it
+# the --recheck option to rerun configure.
+#
+# `ac_cv_env_foo' variables (set or unset) will be overridden when
+# loading this file, other *unset* `ac_cv_foo' will be assigned the
+# following values.
+
+_ACEOF
+
+# The following way of writing the cache mishandles newlines in values,
+# but we know of no workaround that is simple, portable, and efficient.
+# So, we kill variables containing newlines.
+# Ultrix sh set writes to stderr and can't be redirected directly,
+# and sets the high bit in the cache file unless we assign to the vars.
+(
+  for ac_var in `(set) 2>&1 | sed -n 's/^\([a-zA-Z_][a-zA-Z0-9_]*\)=.*/\1/p'`; do
+    eval ac_val=\$$ac_var
+    case $ac_val in #(
+    *${as_nl}*)
+      case $ac_var in #(
+      *_cv_*) { printf "%s\n" "$as_me:${as_lineno-$LINENO}: WARNING: cache variable $ac_var contains a newline" >&5
+printf "%s\n" "$as_me: WARNING: cache variable $ac_var contains a newline" >&2;} ;;
+      esac
+      case $ac_var in #(
+      _ | IFS | as_nl) ;; #(
+      BASH_ARGV | BASH_SOURCE) eval $ac_var= ;; #(
+      *) { eval $ac_var=; unset $ac_var;} ;;
+      esac ;;
+    esac
+  done
+
+  (set) 2>&1 |
+    case $as_nl`(ac_space=' '; set) 2>&1` in #(
+    *${as_nl}ac_space=\ *)
+      # `set' does not quote correctly, so add quotes: double-quote
+      # substitution turns \\\\ into \\, and sed turns \\ into \.
+      sed -n \
+	"s/'/'\\\\''/g;
+	  s/^\\([_$as_cr_alnum]*_cv_[_$as_cr_alnum]*\\)=\\(.*\\)/\\1='\\2'/p"
+      ;; #(
+    *)
+      # `set' quotes correctly as required by POSIX, so do not add quotes.
+      sed -n "/^[_$as_cr_alnum]*_cv_[_$as_cr_alnum]*=/p"
+      ;;
+    esac |
+    sort
+) |
+  sed '
+     /^ac_cv_env_/b end
+     t clear
+     :clear
+     s/^\([^=]*\)=\(.*[{}].*\)$/test ${\1+y} || &/
+     t end
+     s/^\([^=]*\)=\(.*\)$/\1=${\1=\2}/
+     :end' >>confcache
+if diff "$cache_file" confcache >/dev/null 2>&1; then :; else
+  if test -w "$cache_file"; then
+    if test "x$cache_file" != "x/dev/null"; then
+      { printf "%s\n" "$as_me:${as_lineno-$LINENO}: updating cache $cache_file" >&5
+printf "%s\n" "$as_me: updating cache $cache_file" >&6;}
+      if test ! -f "$cache_file" || test -h "$cache_file"; then
+	cat confcache >"$cache_file"
+      else
+        case $cache_file in #(
+        */* | ?:*)
+	  mv -f confcache "$cache_file"$$ &&
+	  mv -f "$cache_file"$$ "$cache_file" ;; #(
+        *)
+	  mv -f confcache "$cache_file" ;;
+	esac
+      fi
+    fi
+  else
+    { printf "%s\n" "$as_me:${as_lineno-$LINENO}: not updating unwritable cache $cache_file" >&5
+printf "%s\n" "$as_me: not updating unwritable cache $cache_file" >&6;}
+  fi
+fi
+rm -f confcache
+
+test "x$prefix" = xNONE && prefix=$ac_default_prefix
+# Let make expand exec_prefix.
+test "x$exec_prefix" = xNONE && exec_prefix='${prefix}'
+
+DEFS=-DHAVE_CONFIG_H
+
+ac_libobjs=
+ac_ltlibobjs=
+U=
+for ac_i in : $LIBOBJS; do test "x$ac_i" = x: && continue
+  # 1. Remove the extension, and $U if already installed.
+  ac_script='s/\$U\././;s/\.o$//;s/\.obj$//'
+  ac_i=`printf "%s\n" "$ac_i" | sed "$ac_script"`
+  # 2. Prepend LIBOBJDIR.  When used with automake>=1.10 LIBOBJDIR
+  #    will be set to the directory where LIBOBJS objects are built.
+  as_fn_append ac_libobjs " \${LIBOBJDIR}$ac_i\$U.$ac_objext"
+  as_fn_append ac_ltlibobjs " \${LIBOBJDIR}$ac_i"'$U.lo'
+done
+LIBOBJS=$ac_libobjs
+
+LTLIBOBJS=$ac_ltlibobjs
+
+
+
+
+: "${CONFIG_STATUS=./config.status}"
+ac_write_fail=0
+ac_clean_files_save=$ac_clean_files
+ac_clean_files="$ac_clean_files $CONFIG_STATUS"
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: creating $CONFIG_STATUS" >&5
+printf "%s\n" "$as_me: creating $CONFIG_STATUS" >&6;}
+as_write_fail=0
+cat >$CONFIG_STATUS <<_ASEOF || as_write_fail=1
+#! $SHELL
+# Generated by $as_me.
+# Run this file to recreate the current configuration.
+# Compiler output produced by configure, useful for debugging
+# configure, is in config.log if it exists.
+
+debug=false
+ac_cs_recheck=false
+ac_cs_silent=false
+
+SHELL=\${CONFIG_SHELL-$SHELL}
+export SHELL
+_ASEOF
+cat >>$CONFIG_STATUS <<\_ASEOF || as_write_fail=1
+## -------------------- ##
+## M4sh Initialization. ##
+## -------------------- ##
+
+# Be more Bourne compatible
+DUALCASE=1; export DUALCASE # for MKS sh
+as_nop=:
+if test ${ZSH_VERSION+y} && (emulate sh) >/dev/null 2>&1
+then :
+  emulate sh
+  NULLCMD=:
+  # Pre-4.2 versions of Zsh do word splitting on ${1+"$@"}, which
+  # is contrary to our usage.  Disable this feature.
+  alias -g '${1+"$@"}'='"$@"'
+  setopt NO_GLOB_SUBST
+else $as_nop
+  case `(set -o) 2>/dev/null` in #(
+  *posix*) :
+    set -o posix ;; #(
+  *) :
+     ;;
+esac
+fi
+
+
+
+# Reset variables that may have inherited troublesome values from
+# the environment.
+
+# IFS needs to be set, to space, tab, and newline, in precisely that order.
+# (If _AS_PATH_WALK were called with IFS unset, it would have the
+# side effect of setting IFS to empty, thus disabling word splitting.)
+# Quoting is to prevent editors from complaining about space-tab.
+as_nl='
+'
+export as_nl
+IFS=" ""	$as_nl"
+
+PS1='$ '
+PS2='> '
+PS4='+ '
+
+# Ensure predictable behavior from utilities with locale-dependent output.
+LC_ALL=C
+export LC_ALL
+LANGUAGE=C
+export LANGUAGE
+
+# We cannot yet rely on "unset" to work, but we need these variables
+# to be unset--not just set to an empty or harmless value--now, to
+# avoid bugs in old shells (e.g. pre-3.0 UWIN ksh).  This construct
+# also avoids known problems related to "unset" and subshell syntax
+# in other old shells (e.g. bash 2.01 and pdksh 5.2.14).
+for as_var in BASH_ENV ENV MAIL MAILPATH CDPATH
+do eval test \${$as_var+y} \
+  && ( (unset $as_var) || exit 1) >/dev/null 2>&1 && unset $as_var || :
+done
+
+# Ensure that fds 0, 1, and 2 are open.
+if (exec 3>&0) 2>/dev/null; then :; else exec 0</dev/null; fi
+if (exec 3>&1) 2>/dev/null; then :; else exec 1>/dev/null; fi
+if (exec 3>&2)            ; then :; else exec 2>/dev/null; fi
+
+# The user is always right.
+if ${PATH_SEPARATOR+false} :; then
+  PATH_SEPARATOR=:
+  (PATH='/bin;/bin'; FPATH=$PATH; sh -c :) >/dev/null 2>&1 && {
+    (PATH='/bin:/bin'; FPATH=$PATH; sh -c :) >/dev/null 2>&1 ||
+      PATH_SEPARATOR=';'
+  }
+fi
+
+
+# Find who we are.  Look in the path if we contain no directory separator.
+as_myself=
+case $0 in #((
+  *[\\/]* ) as_myself=$0 ;;
+  *) as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  case $as_dir in #(((
+    '') as_dir=./ ;;
+    */) ;;
+    *) as_dir=$as_dir/ ;;
+  esac
+    test -r "$as_dir$0" && as_myself=$as_dir$0 && break
+  done
+IFS=$as_save_IFS
+
+     ;;
+esac
+# We did not find ourselves, most probably we were run as `sh COMMAND'
+# in which case we are not to be found in the path.
+if test "x$as_myself" = x; then
+  as_myself=$0
+fi
+if test ! -f "$as_myself"; then
+  printf "%s\n" "$as_myself: error: cannot find myself; rerun with an absolute file name" >&2
+  exit 1
+fi
+
+
+
+# as_fn_error STATUS ERROR [LINENO LOG_FD]
+# ----------------------------------------
+# Output "`basename $0`: error: ERROR" to stderr. If LINENO and LOG_FD are
+# provided, also output the error to LOG_FD, referencing LINENO. Then exit the
+# script with STATUS, using 1 if that was 0.
+as_fn_error ()
+{
+  as_status=$1; test $as_status -eq 0 && as_status=1
+  if test "$4"; then
+    as_lineno=${as_lineno-"$3"} as_lineno_stack=as_lineno_stack=$as_lineno_stack
+    printf "%s\n" "$as_me:${as_lineno-$LINENO}: error: $2" >&$4
+  fi
+  printf "%s\n" "$as_me: error: $2" >&2
+  as_fn_exit $as_status
+} # as_fn_error
+
+
+
+# as_fn_set_status STATUS
+# -----------------------
+# Set $? to STATUS, without forking.
+as_fn_set_status ()
+{
+  return $1
+} # as_fn_set_status
+
+# as_fn_exit STATUS
+# -----------------
+# Exit the shell with STATUS, even in a "trap 0" or "set -e" context.
+as_fn_exit ()
+{
+  set +e
+  as_fn_set_status $1
+  exit $1
+} # as_fn_exit
+
+# as_fn_unset VAR
+# ---------------
+# Portably unset VAR.
+as_fn_unset ()
+{
+  { eval $1=; unset $1;}
+}
+as_unset=as_fn_unset
+
+# as_fn_append VAR VALUE
+# ----------------------
+# Append the text in VALUE to the end of the definition contained in VAR. Take
+# advantage of any shell optimizations that allow amortized linear growth over
+# repeated appends, instead of the typical quadratic growth present in naive
+# implementations.
+if (eval "as_var=1; as_var+=2; test x\$as_var = x12") 2>/dev/null
+then :
+  eval 'as_fn_append ()
+  {
+    eval $1+=\$2
+  }'
+else $as_nop
+  as_fn_append ()
+  {
+    eval $1=\$$1\$2
+  }
+fi # as_fn_append
+
+# as_fn_arith ARG...
+# ------------------
+# Perform arithmetic evaluation on the ARGs, and store the result in the
+# global $as_val. Take advantage of shells that can avoid forks. The arguments
+# must be portable across $(()) and expr.
+if (eval "test \$(( 1 + 1 )) = 2") 2>/dev/null
+then :
+  eval 'as_fn_arith ()
+  {
+    as_val=$(( $* ))
+  }'
+else $as_nop
+  as_fn_arith ()
+  {
+    as_val=`expr "$@" || test $? -eq 1`
+  }
+fi # as_fn_arith
+
+
+if expr a : '\(a\)' >/dev/null 2>&1 &&
+   test "X`expr 00001 : '.*\(...\)'`" = X001; then
+  as_expr=expr
+else
+  as_expr=false
+fi
+
+if (basename -- /) >/dev/null 2>&1 && test "X`basename -- / 2>&1`" = "X/"; then
+  as_basename=basename
+else
+  as_basename=false
+fi
+
+if (as_dir=`dirname -- /` && test "X$as_dir" = X/) >/dev/null 2>&1; then
+  as_dirname=dirname
+else
+  as_dirname=false
+fi
+
+as_me=`$as_basename -- "$0" ||
+$as_expr X/"$0" : '.*/\([^/][^/]*\)/*$' \| \
+	 X"$0" : 'X\(//\)$' \| \
+	 X"$0" : 'X\(/\)' \| . 2>/dev/null ||
+printf "%s\n" X/"$0" |
+    sed '/^.*\/\([^/][^/]*\)\/*$/{
+	    s//\1/
+	    q
+	  }
+	  /^X\/\(\/\/\)$/{
+	    s//\1/
+	    q
+	  }
+	  /^X\/\(\/\).*/{
+	    s//\1/
+	    q
+	  }
+	  s/.*/./; q'`
+
+# Avoid depending upon Character Ranges.
+as_cr_letters='abcdefghijklmnopqrstuvwxyz'
+as_cr_LETTERS='ABCDEFGHIJKLMNOPQRSTUVWXYZ'
+as_cr_Letters=$as_cr_letters$as_cr_LETTERS
+as_cr_digits='0123456789'
+as_cr_alnum=$as_cr_Letters$as_cr_digits
+
+
+# Determine whether it's possible to make 'echo' print without a newline.
+# These variables are no longer used directly by Autoconf, but are AC_SUBSTed
+# for compatibility with existing Makefiles.
+ECHO_C= ECHO_N= ECHO_T=
+case `echo -n x` in #(((((
+-n*)
+  case `echo 'xy\c'` in
+  *c*) ECHO_T='	';;	# ECHO_T is single tab character.
+  xy)  ECHO_C='\c';;
+  *)   echo `echo ksh88 bug on AIX 6.1` > /dev/null
+       ECHO_T='	';;
+  esac;;
+*)
+  ECHO_N='-n';;
+esac
+
+# For backward compatibility with old third-party macros, we provide
+# the shell variables $as_echo and $as_echo_n.  New code should use
+# AS_ECHO(["message"]) and AS_ECHO_N(["message"]), respectively.
+as_echo='printf %s\n'
+as_echo_n='printf %s'
+
+rm -f conf$$ conf$$.exe conf$$.file
+if test -d conf$$.dir; then
+  rm -f conf$$.dir/conf$$.file
+else
+  rm -f conf$$.dir
+  mkdir conf$$.dir 2>/dev/null
+fi
+if (echo >conf$$.file) 2>/dev/null; then
+  if ln -s conf$$.file conf$$ 2>/dev/null; then
+    as_ln_s='ln -s'
+    # ... but there are two gotchas:
+    # 1) On MSYS, both `ln -s file dir' and `ln file dir' fail.
+    # 2) DJGPP < 2.04 has no symlinks; `ln -s' creates a wrapper executable.
+    # In both cases, we have to default to `cp -pR'.
+    ln -s conf$$.file conf$$.dir 2>/dev/null && test ! -f conf$$.exe ||
+      as_ln_s='cp -pR'
+  elif ln conf$$.file conf$$ 2>/dev/null; then
+    as_ln_s=ln
+  else
+    as_ln_s='cp -pR'
+  fi
+else
+  as_ln_s='cp -pR'
+fi
+rm -f conf$$ conf$$.exe conf$$.dir/conf$$.file conf$$.file
+rmdir conf$$.dir 2>/dev/null
+
+
+# as_fn_mkdir_p
+# -------------
+# Create "$as_dir" as a directory, including parents if necessary.
+as_fn_mkdir_p ()
+{
+
+  case $as_dir in #(
+  -*) as_dir=./$as_dir;;
+  esac
+  test -d "$as_dir" || eval $as_mkdir_p || {
+    as_dirs=
+    while :; do
+      case $as_dir in #(
+      *\'*) as_qdir=`printf "%s\n" "$as_dir" | sed "s/'/'\\\\\\\\''/g"`;; #'(
+      *) as_qdir=$as_dir;;
+      esac
+      as_dirs="'$as_qdir' $as_dirs"
+      as_dir=`$as_dirname -- "$as_dir" ||
+$as_expr X"$as_dir" : 'X\(.*[^/]\)//*[^/][^/]*/*$' \| \
+	 X"$as_dir" : 'X\(//\)[^/]' \| \
+	 X"$as_dir" : 'X\(//\)$' \| \
+	 X"$as_dir" : 'X\(/\)' \| . 2>/dev/null ||
+printf "%s\n" X"$as_dir" |
+    sed '/^X\(.*[^/]\)\/\/*[^/][^/]*\/*$/{
+	    s//\1/
+	    q
+	  }
+	  /^X\(\/\/\)[^/].*/{
+	    s//\1/
+	    q
+	  }
+	  /^X\(\/\/\)$/{
+	    s//\1/
+	    q
+	  }
+	  /^X\(\/\).*/{
+	    s//\1/
+	    q
+	  }
+	  s/.*/./; q'`
+      test -d "$as_dir" && break
+    done
+    test -z "$as_dirs" || eval "mkdir $as_dirs"
+  } || test -d "$as_dir" || as_fn_error $? "cannot create directory $as_dir"
+
+
+} # as_fn_mkdir_p
+if mkdir -p . 2>/dev/null; then
+  as_mkdir_p='mkdir -p "$as_dir"'
+else
+  test -d ./-p && rmdir ./-p
+  as_mkdir_p=false
+fi
+
+
+# as_fn_executable_p FILE
+# -----------------------
+# Test if FILE is an executable regular file.
+as_fn_executable_p ()
+{
+  test -f "$1" && test -x "$1"
+} # as_fn_executable_p
+as_test_x='test -x'
+as_executable_p=as_fn_executable_p
+
+# Sed expression to map a string onto a valid CPP name.
+as_tr_cpp="eval sed 'y%*$as_cr_letters%P$as_cr_LETTERS%;s%[^_$as_cr_alnum]%_%g'"
+
+# Sed expression to map a string onto a valid variable name.
+as_tr_sh="eval sed 'y%*+%pp%;s%[^_$as_cr_alnum]%_%g'"
+
+
+exec 6>&1
+## ----------------------------------- ##
+## Main body of $CONFIG_STATUS script. ##
+## ----------------------------------- ##
+_ASEOF
+test $as_write_fail = 0 && chmod +x $CONFIG_STATUS || ac_write_fail=1
+
+cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1
+# Save the log message, to keep $0 and so on meaningful, and to
+# report actual input values of CONFIG_FILES etc. instead of their
+# values after options handling.
+ac_log="
+This file was extended by $as_me, which was
+generated by GNU Autoconf 2.71.  Invocation command line was
+
+  CONFIG_FILES    = $CONFIG_FILES
+  CONFIG_HEADERS  = $CONFIG_HEADERS
+  CONFIG_LINKS    = $CONFIG_LINKS
+  CONFIG_COMMANDS = $CONFIG_COMMANDS
+  $ $0 $@
+
+on `(hostname || uname -n) 2>/dev/null | sed 1q`
+"
+
+_ACEOF
+
+case $ac_config_files in *"
+"*) set x $ac_config_files; shift; ac_config_files=$*;;
+esac
+
+case $ac_config_headers in *"
+"*) set x $ac_config_headers; shift; ac_config_headers=$*;;
+esac
+
+
+cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1
+# Files that config.status was made for.
+config_files="$ac_config_files"
+config_headers="$ac_config_headers"
+config_commands="$ac_config_commands"
+
+_ACEOF
+
+cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1
+ac_cs_usage="\
+\`$as_me' instantiates files and other configuration actions
+from templates according to the current configuration.  Unless the files
+and actions are specified as TAGs, all are instantiated by default.
+
+Usage: $0 [OPTION]... [TAG]...
+
+  -h, --help       print this help, then exit
+  -V, --version    print version number and configuration settings, then exit
+      --config     print configuration, then exit
+  -q, --quiet, --silent
+                   do not print progress messages
+  -d, --debug      don't remove temporary files
+      --recheck    update $as_me by reconfiguring in the same conditions
+      --file=FILE[:TEMPLATE]
+                   instantiate the configuration file FILE
+      --header=FILE[:TEMPLATE]
+                   instantiate the configuration header FILE
+
+Configuration files:
+$config_files
+
+Configuration headers:
+$config_headers
+
+Configuration commands:
+$config_commands
+
+Report bugs to the package provider."
+
+_ACEOF
+ac_cs_config=`printf "%s\n" "$ac_configure_args" | sed "$ac_safe_unquote"`
+ac_cs_config_escaped=`printf "%s\n" "$ac_cs_config" | sed "s/^ //; s/'/'\\\\\\\\''/g"`
+cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1
+ac_cs_config='$ac_cs_config_escaped'
+ac_cs_version="\\
+config.status
+configured by $0, generated by GNU Autoconf 2.71,
+  with options \\"\$ac_cs_config\\"
+
+Copyright (C) 2021 Free Software Foundation, Inc.
+This config.status script is free software; the Free Software Foundation
+gives unlimited permission to copy, distribute and modify it."
+
+ac_pwd='$ac_pwd'
+srcdir='$srcdir'
+INSTALL='$INSTALL'
+AWK='$AWK'
+test -n "\$AWK" || AWK=awk
+_ACEOF
+
+cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1
+# The default lists apply if the user does not specify any file.
+ac_need_defaults=:
+while test $# != 0
+do
+  case $1 in
+  --*=?*)
+    ac_option=`expr "X$1" : 'X\([^=]*\)='`
+    ac_optarg=`expr "X$1" : 'X[^=]*=\(.*\)'`
+    ac_shift=:
+    ;;
+  --*=)
+    ac_option=`expr "X$1" : 'X\([^=]*\)='`
+    ac_optarg=
+    ac_shift=:
+    ;;
+  *)
+    ac_option=$1
+    ac_optarg=$2
+    ac_shift=shift
+    ;;
+  esac
+
+  case $ac_option in
+  # Handling of the options.
+  -recheck | --recheck | --rechec | --reche | --rech | --rec | --re | --r)
+    ac_cs_recheck=: ;;
+  --version | --versio | --versi | --vers | --ver | --ve | --v | -V )
+    printf "%s\n" "$ac_cs_version"; exit ;;
+  --config | --confi | --conf | --con | --co | --c )
+    printf "%s\n" "$ac_cs_config"; exit ;;
+  --debug | --debu | --deb | --de | --d | -d )
+    debug=: ;;
+  --file | --fil | --fi | --f )
+    $ac_shift
+    case $ac_optarg in
+    *\'*) ac_optarg=`printf "%s\n" "$ac_optarg" | sed "s/'/'\\\\\\\\''/g"` ;;
+    '') as_fn_error $? "missing file argument" ;;
+    esac
+    as_fn_append CONFIG_FILES " '$ac_optarg'"
+    ac_need_defaults=false;;
+  --header | --heade | --head | --hea )
+    $ac_shift
+    case $ac_optarg in
+    *\'*) ac_optarg=`printf "%s\n" "$ac_optarg" | sed "s/'/'\\\\\\\\''/g"` ;;
+    esac
+    as_fn_append CONFIG_HEADERS " '$ac_optarg'"
+    ac_need_defaults=false;;
+  --he | --h)
+    # Conflict between --help and --header
+    as_fn_error $? "ambiguous option: \`$1'
+Try \`$0 --help' for more information.";;
+  --help | --hel | -h )
+    printf "%s\n" "$ac_cs_usage"; exit ;;
+  -q | -quiet | --quiet | --quie | --qui | --qu | --q \
+  | -silent | --silent | --silen | --sile | --sil | --si | --s)
+    ac_cs_silent=: ;;
+
+  # This is an error.
+  -*) as_fn_error $? "unrecognized option: \`$1'
+Try \`$0 --help' for more information." ;;
+
+  *) as_fn_append ac_config_targets " $1"
+     ac_need_defaults=false ;;
+
+  esac
+  shift
+done
+
+ac_configure_extra_args=
+
+if $ac_cs_silent; then
+  exec 6>/dev/null
+  ac_configure_extra_args="$ac_configure_extra_args --silent"
+fi
+
+_ACEOF
+cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1
+if \$ac_cs_recheck; then
+  set X $SHELL '$0' $ac_configure_args \$ac_configure_extra_args --no-create --no-recursion
+  shift
+  \printf "%s\n" "running CONFIG_SHELL=$SHELL \$*" >&6
+  CONFIG_SHELL='$SHELL'
+  export CONFIG_SHELL
+  exec "\$@"
+fi
+
+_ACEOF
+cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1
+exec 5>>config.log
+{
+  echo
+  sed 'h;s/./-/g;s/^.../## /;s/...$/ ##/;p;x;p;x' <<_ASBOX
+## Running $as_me. ##
+_ASBOX
+  printf "%s\n" "$ac_log"
+} >&5
+
+_ACEOF
+cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1
+#
+# INIT-COMMANDS
+#
+
+  srcdir="${srcdir}"
+  objroot="${objroot}"
+  mangling_map="${mangling_map}"
+  public_syms="${public_syms}"
+  JEMALLOC_PREFIX="${JEMALLOC_PREFIX}"
+
+
+  srcdir="${srcdir}"
+  objroot="${objroot}"
+  public_syms="${public_syms}"
+  wrap_syms="${wrap_syms}"
+  SYM_PREFIX="${SYM_PREFIX}"
+  JEMALLOC_PREFIX="${JEMALLOC_PREFIX}"
+
+
+  srcdir="${srcdir}"
+  objroot="${objroot}"
+  public_syms="${public_syms}"
+  wrap_syms="${wrap_syms}"
+  SYM_PREFIX="${SYM_PREFIX}"
+
+
+  srcdir="${srcdir}"
+  objroot="${objroot}"
+
+
+  srcdir="${srcdir}"
+  objroot="${objroot}"
+
+
+  srcdir="${srcdir}"
+  objroot="${objroot}"
+
+
+  srcdir="${srcdir}"
+  objroot="${objroot}"
+
+
+  srcdir="${srcdir}"
+  objroot="${objroot}"
+
+
+  srcdir="${srcdir}"
+  objroot="${objroot}"
+
+
+  srcdir="${srcdir}"
+  objroot="${objroot}"
+  install_suffix="${install_suffix}"
+
+
+_ACEOF
+
+cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1
+
+# Handling of arguments.
+for ac_config_target in $ac_config_targets
+do
+  case $ac_config_target in
+    "include/jemalloc/internal/public_symbols.txt") CONFIG_COMMANDS="$CONFIG_COMMANDS include/jemalloc/internal/public_symbols.txt" ;;
+    "include/jemalloc/internal/private_symbols.awk") CONFIG_COMMANDS="$CONFIG_COMMANDS include/jemalloc/internal/private_symbols.awk" ;;
+    "include/jemalloc/internal/private_symbols_jet.awk") CONFIG_COMMANDS="$CONFIG_COMMANDS include/jemalloc/internal/private_symbols_jet.awk" ;;
+    "include/jemalloc/internal/public_namespace.h") CONFIG_COMMANDS="$CONFIG_COMMANDS include/jemalloc/internal/public_namespace.h" ;;
+    "include/jemalloc/internal/public_unnamespace.h") CONFIG_COMMANDS="$CONFIG_COMMANDS include/jemalloc/internal/public_unnamespace.h" ;;
+    "include/jemalloc/jemalloc_protos_jet.h") CONFIG_COMMANDS="$CONFIG_COMMANDS include/jemalloc/jemalloc_protos_jet.h" ;;
+    "include/jemalloc/jemalloc_rename.h") CONFIG_COMMANDS="$CONFIG_COMMANDS include/jemalloc/jemalloc_rename.h" ;;
+    "include/jemalloc/jemalloc_mangle.h") CONFIG_COMMANDS="$CONFIG_COMMANDS include/jemalloc/jemalloc_mangle.h" ;;
+    "include/jemalloc/jemalloc_mangle_jet.h") CONFIG_COMMANDS="$CONFIG_COMMANDS include/jemalloc/jemalloc_mangle_jet.h" ;;
+    "include/jemalloc/jemalloc.h") CONFIG_COMMANDS="$CONFIG_COMMANDS include/jemalloc/jemalloc.h" ;;
+    "$cfghdrs_tup") CONFIG_HEADERS="$CONFIG_HEADERS $cfghdrs_tup" ;;
+    "$cfgoutputs_tup") CONFIG_FILES="$CONFIG_FILES $cfgoutputs_tup" ;;
+    "config.stamp") CONFIG_FILES="$CONFIG_FILES config.stamp" ;;
+    "bin/jemalloc-config") CONFIG_FILES="$CONFIG_FILES bin/jemalloc-config" ;;
+    "bin/jemalloc.sh") CONFIG_FILES="$CONFIG_FILES bin/jemalloc.sh" ;;
+    "bin/jeprof") CONFIG_FILES="$CONFIG_FILES bin/jeprof" ;;
+
+  *) as_fn_error $? "invalid argument: \`$ac_config_target'" "$LINENO" 5;;
+  esac
+done
+
+
+# If the user did not use the arguments to specify the items to instantiate,
+# then the envvar interface is used.  Set only those that are not.
+# We use the long form for the default assignment because of an extremely
+# bizarre bug on SunOS 4.1.3.
+if $ac_need_defaults; then
+  test ${CONFIG_FILES+y} || CONFIG_FILES=$config_files
+  test ${CONFIG_HEADERS+y} || CONFIG_HEADERS=$config_headers
+  test ${CONFIG_COMMANDS+y} || CONFIG_COMMANDS=$config_commands
+fi
+
+# Have a temporary directory for convenience.  Make it in the build tree
+# simply because there is no reason against having it here, and in addition,
+# creating and moving files from /tmp can sometimes cause problems.
+# Hook for its removal unless debugging.
+# Note that there is a small window in which the directory will not be cleaned:
+# after its creation but before its name has been assigned to `$tmp'.
+$debug ||
+{
+  tmp= ac_tmp=
+  trap 'exit_status=$?
+  : "${ac_tmp:=$tmp}"
+  { test ! -d "$ac_tmp" || rm -fr "$ac_tmp"; } && exit $exit_status
+' 0
+  trap 'as_fn_exit 1' 1 2 13 15
+}
+# Create a (secure) tmp directory for tmp files.
+
+{
+  tmp=`(umask 077 && mktemp -d "./confXXXXXX") 2>/dev/null` &&
+  test -d "$tmp"
+}  ||
+{
+  tmp=./conf$$-$RANDOM
+  (umask 077 && mkdir "$tmp")
+} || as_fn_error $? "cannot create a temporary directory in ." "$LINENO" 5
+ac_tmp=$tmp
+
+# Set up the scripts for CONFIG_FILES section.
+# No need to generate them if there are no CONFIG_FILES.
+# This happens for instance with `./config.status config.h'.
+if test -n "$CONFIG_FILES"; then
+
+
+ac_cr=`echo X | tr X '\015'`
+# On cygwin, bash can eat \r inside `` if the user requested igncr.
+# But we know of no other shell where ac_cr would be empty at this
+# point, so we can use a bashism as a fallback.
+if test "x$ac_cr" = x; then
+  eval ac_cr=\$\'\\r\'
+fi
+ac_cs_awk_cr=`$AWK 'BEGIN { print "a\rb" }' </dev/null 2>/dev/null`
+if test "$ac_cs_awk_cr" = "a${ac_cr}b"; then
+  ac_cs_awk_cr='\\r'
+else
+  ac_cs_awk_cr=$ac_cr
+fi
+
+echo 'BEGIN {' >"$ac_tmp/subs1.awk" &&
+_ACEOF
+
+
+{
+  echo "cat >conf$$subs.awk <<_ACEOF" &&
+  echo "$ac_subst_vars" | sed 's/.*/&!$&$ac_delim/' &&
+  echo "_ACEOF"
+} >conf$$subs.sh ||
+  as_fn_error $? "could not make $CONFIG_STATUS" "$LINENO" 5
+ac_delim_num=`echo "$ac_subst_vars" | grep -c '^'`
+ac_delim='%!_!# '
+for ac_last_try in false false false false false :; do
+  . ./conf$$subs.sh ||
+    as_fn_error $? "could not make $CONFIG_STATUS" "$LINENO" 5
+
+  ac_delim_n=`sed -n "s/.*$ac_delim\$/X/p" conf$$subs.awk | grep -c X`
+  if test $ac_delim_n = $ac_delim_num; then
+    break
+  elif $ac_last_try; then
+    as_fn_error $? "could not make $CONFIG_STATUS" "$LINENO" 5
+  else
+    ac_delim="$ac_delim!$ac_delim _$ac_delim!! "
+  fi
+done
+rm -f conf$$subs.sh
+
+cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1
+cat >>"\$ac_tmp/subs1.awk" <<\\_ACAWK &&
+_ACEOF
+sed -n '
+h
+s/^/S["/; s/!.*/"]=/
+p
+g
+s/^[^!]*!//
+:repl
+t repl
+s/'"$ac_delim"'$//
+t delim
+:nl
+h
+s/\(.\{148\}\)..*/\1/
+t more1
+s/["\\]/\\&/g; s/^/"/; s/$/\\n"\\/
+p
+n
+b repl
+:more1
+s/["\\]/\\&/g; s/^/"/; s/$/"\\/
+p
+g
+s/.\{148\}//
+t nl
+:delim
+h
+s/\(.\{148\}\)..*/\1/
+t more2
+s/["\\]/\\&/g; s/^/"/; s/$/"/
+p
+b
+:more2
+s/["\\]/\\&/g; s/^/"/; s/$/"\\/
+p
+g
+s/.\{148\}//
+t delim
+' <conf$$subs.awk | sed '
+/^[^""]/{
+  N
+  s/\n//
+}
+' >>$CONFIG_STATUS || ac_write_fail=1
+rm -f conf$$subs.awk
+cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1
+_ACAWK
+cat >>"\$ac_tmp/subs1.awk" <<_ACAWK &&
+  for (key in S) S_is_set[key] = 1
+  FS = ""
+
+}
+{
+  line = $ 0
+  nfields = split(line, field, "@")
+  substed = 0
+  len = length(field[1])
+  for (i = 2; i < nfields; i++) {
+    key = field[i]
+    keylen = length(key)
+    if (S_is_set[key]) {
+      value = S[key]
+      line = substr(line, 1, len) "" value "" substr(line, len + keylen + 3)
+      len += length(value) + length(field[++i])
+      substed = 1
+    } else
+      len += 1 + keylen
+  }
+
+  print line
+}
+
+_ACAWK
+_ACEOF
+cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1
+if sed "s/$ac_cr//" < /dev/null > /dev/null 2>&1; then
+  sed "s/$ac_cr\$//; s/$ac_cr/$ac_cs_awk_cr/g"
+else
+  cat
+fi < "$ac_tmp/subs1.awk" > "$ac_tmp/subs.awk" \
+  || as_fn_error $? "could not setup config files machinery" "$LINENO" 5
+_ACEOF
+
+# VPATH may cause trouble with some makes, so we remove sole $(srcdir),
+# ${srcdir} and @srcdir@ entries from VPATH if srcdir is ".", strip leading and
+# trailing colons and then remove the whole line if VPATH becomes empty
+# (actually we leave an empty line to preserve line numbers).
+if test "x$srcdir" = x.; then
+  ac_vpsub='/^[	 ]*VPATH[	 ]*=[	 ]*/{
+h
+s///
+s/^/:/
+s/[	 ]*$/:/
+s/:\$(srcdir):/:/g
+s/:\${srcdir}:/:/g
+s/:@srcdir@:/:/g
+s/^:*//
+s/:*$//
+x
+s/\(=[	 ]*\).*/\1/
+G
+s/\n//
+s/^[^=]*=[	 ]*$//
+}'
+fi
+
+cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1
+fi # test -n "$CONFIG_FILES"
+
+# Set up the scripts for CONFIG_HEADERS section.
+# No need to generate them if there are no CONFIG_HEADERS.
+# This happens for instance with `./config.status Makefile'.
+if test -n "$CONFIG_HEADERS"; then
+cat >"$ac_tmp/defines.awk" <<\_ACAWK ||
+BEGIN {
+_ACEOF
+
+# Transform confdefs.h into an awk script `defines.awk', embedded as
+# here-document in config.status, that substitutes the proper values into
+# config.h.in to produce config.h.
+
+# Create a delimiter string that does not exist in confdefs.h, to ease
+# handling of long lines.
+ac_delim='%!_!# '
+for ac_last_try in false false :; do
+  ac_tt=`sed -n "/$ac_delim/p" confdefs.h`
+  if test -z "$ac_tt"; then
+    break
+  elif $ac_last_try; then
+    as_fn_error $? "could not make $CONFIG_HEADERS" "$LINENO" 5
+  else
+    ac_delim="$ac_delim!$ac_delim _$ac_delim!! "
+  fi
+done
+
+# For the awk script, D is an array of macro values keyed by name,
+# likewise P contains macro parameters if any.  Preserve backslash
+# newline sequences.
+
+ac_word_re=[_$as_cr_Letters][_$as_cr_alnum]*
+sed -n '
+s/.\{148\}/&'"$ac_delim"'/g
+t rset
+:rset
+s/^[	 ]*#[	 ]*define[	 ][	 ]*/ /
+t def
+d
+:def
+s/\\$//
+t bsnl
+s/["\\]/\\&/g
+s/^ \('"$ac_word_re"'\)\(([^()]*)\)[	 ]*\(.*\)/P["\1"]="\2"\
+D["\1"]=" \3"/p
+s/^ \('"$ac_word_re"'\)[	 ]*\(.*\)/D["\1"]=" \2"/p
+d
+:bsnl
+s/["\\]/\\&/g
+s/^ \('"$ac_word_re"'\)\(([^()]*)\)[	 ]*\(.*\)/P["\1"]="\2"\
+D["\1"]=" \3\\\\\\n"\\/p
+t cont
+s/^ \('"$ac_word_re"'\)[	 ]*\(.*\)/D["\1"]=" \2\\\\\\n"\\/p
+t cont
+d
+:cont
+n
+s/.\{148\}/&'"$ac_delim"'/g
+t clear
+:clear
+s/\\$//
+t bsnlc
+s/["\\]/\\&/g; s/^/"/; s/$/"/p
+d
+:bsnlc
+s/["\\]/\\&/g; s/^/"/; s/$/\\\\\\n"\\/p
+b cont
+' <confdefs.h | sed '
+s/'"$ac_delim"'/"\\\
+"/g' >>$CONFIG_STATUS || ac_write_fail=1
+
+cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1
+  for (key in D) D_is_set[key] = 1
+  FS = ""
+}
+/^[\t ]*#[\t ]*(define|undef)[\t ]+$ac_word_re([\t (]|\$)/ {
+  line = \$ 0
+  split(line, arg, " ")
+  if (arg[1] == "#") {
+    defundef = arg[2]
+    mac1 = arg[3]
+  } else {
+    defundef = substr(arg[1], 2)
+    mac1 = arg[2]
+  }
+  split(mac1, mac2, "(") #)
+  macro = mac2[1]
+  prefix = substr(line, 1, index(line, defundef) - 1)
+  if (D_is_set[macro]) {
+    # Preserve the white space surrounding the "#".
+    print prefix "define", macro P[macro] D[macro]
+    next
+  } else {
+    # Replace #undef with comments.  This is necessary, for example,
+    # in the case of _POSIX_SOURCE, which is predefined and required
+    # on some systems where configure will not decide to define it.
+    if (defundef == "undef") {
+      print "/*", prefix defundef, macro, "*/"
+      next
+    }
+  }
+}
+{ print }
+_ACAWK
+_ACEOF
+cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1
+  as_fn_error $? "could not setup config headers machinery" "$LINENO" 5
+fi # test -n "$CONFIG_HEADERS"
+
+
+eval set X "  :F $CONFIG_FILES  :H $CONFIG_HEADERS    :C $CONFIG_COMMANDS"
+shift
+for ac_tag
+do
+  case $ac_tag in
+  :[FHLC]) ac_mode=$ac_tag; continue;;
+  esac
+  case $ac_mode$ac_tag in
+  :[FHL]*:*);;
+  :L* | :C*:*) as_fn_error $? "invalid tag \`$ac_tag'" "$LINENO" 5;;
+  :[FH]-) ac_tag=-:-;;
+  :[FH]*) ac_tag=$ac_tag:$ac_tag.in;;
+  esac
+  ac_save_IFS=$IFS
+  IFS=:
+  set x $ac_tag
+  IFS=$ac_save_IFS
+  shift
+  ac_file=$1
+  shift
+
+  case $ac_mode in
+  :L) ac_source=$1;;
+  :[FH])
+    ac_file_inputs=
+    for ac_f
+    do
+      case $ac_f in
+      -) ac_f="$ac_tmp/stdin";;
+      *) # Look for the file first in the build tree, then in the source tree
+	 # (if the path is not absolute).  The absolute path cannot be DOS-style,
+	 # because $ac_f cannot contain `:'.
+	 test -f "$ac_f" ||
+	   case $ac_f in
+	   [\\/$]*) false;;
+	   *) test -f "$srcdir/$ac_f" && ac_f="$srcdir/$ac_f";;
+	   esac ||
+	   as_fn_error 1 "cannot find input file: \`$ac_f'" "$LINENO" 5;;
+      esac
+      case $ac_f in *\'*) ac_f=`printf "%s\n" "$ac_f" | sed "s/'/'\\\\\\\\''/g"`;; esac
+      as_fn_append ac_file_inputs " '$ac_f'"
+    done
+
+    # Let's still pretend it is `configure' which instantiates (i.e., don't
+    # use $as_me), people would be surprised to read:
+    #    /* config.h.  Generated by config.status.  */
+    configure_input='Generated from '`
+	  printf "%s\n" "$*" | sed 's|^[^:]*/||;s|:[^:]*/|, |g'
+	`' by configure.'
+    if test x"$ac_file" != x-; then
+      configure_input="$ac_file.  $configure_input"
+      { printf "%s\n" "$as_me:${as_lineno-$LINENO}: creating $ac_file" >&5
+printf "%s\n" "$as_me: creating $ac_file" >&6;}
+    fi
+    # Neutralize special characters interpreted by sed in replacement strings.
+    case $configure_input in #(
+    *\&* | *\|* | *\\* )
+       ac_sed_conf_input=`printf "%s\n" "$configure_input" |
+       sed 's/[\\\\&|]/\\\\&/g'`;; #(
+    *) ac_sed_conf_input=$configure_input;;
+    esac
+
+    case $ac_tag in
+    *:-:* | *:-) cat >"$ac_tmp/stdin" \
+      || as_fn_error $? "could not create $ac_file" "$LINENO" 5 ;;
+    esac
+    ;;
+  esac
+
+  ac_dir=`$as_dirname -- "$ac_file" ||
+$as_expr X"$ac_file" : 'X\(.*[^/]\)//*[^/][^/]*/*$' \| \
+	 X"$ac_file" : 'X\(//\)[^/]' \| \
+	 X"$ac_file" : 'X\(//\)$' \| \
+	 X"$ac_file" : 'X\(/\)' \| . 2>/dev/null ||
+printf "%s\n" X"$ac_file" |
+    sed '/^X\(.*[^/]\)\/\/*[^/][^/]*\/*$/{
+	    s//\1/
+	    q
+	  }
+	  /^X\(\/\/\)[^/].*/{
+	    s//\1/
+	    q
+	  }
+	  /^X\(\/\/\)$/{
+	    s//\1/
+	    q
+	  }
+	  /^X\(\/\).*/{
+	    s//\1/
+	    q
+	  }
+	  s/.*/./; q'`
+  as_dir="$ac_dir"; as_fn_mkdir_p
+  ac_builddir=.
+
+case "$ac_dir" in
+.) ac_dir_suffix= ac_top_builddir_sub=. ac_top_build_prefix= ;;
+*)
+  ac_dir_suffix=/`printf "%s\n" "$ac_dir" | sed 's|^\.[\\/]||'`
+  # A ".." for each directory in $ac_dir_suffix.
+  ac_top_builddir_sub=`printf "%s\n" "$ac_dir_suffix" | sed 's|/[^\\/]*|/..|g;s|/||'`
+  case $ac_top_builddir_sub in
+  "") ac_top_builddir_sub=. ac_top_build_prefix= ;;
+  *)  ac_top_build_prefix=$ac_top_builddir_sub/ ;;
+  esac ;;
+esac
+ac_abs_top_builddir=$ac_pwd
+ac_abs_builddir=$ac_pwd$ac_dir_suffix
+# for backward compatibility:
+ac_top_builddir=$ac_top_build_prefix
+
+case $srcdir in
+  .)  # We are building in place.
+    ac_srcdir=.
+    ac_top_srcdir=$ac_top_builddir_sub
+    ac_abs_top_srcdir=$ac_pwd ;;
+  [\\/]* | ?:[\\/]* )  # Absolute name.
+    ac_srcdir=$srcdir$ac_dir_suffix;
+    ac_top_srcdir=$srcdir
+    ac_abs_top_srcdir=$srcdir ;;
+  *) # Relative name.
+    ac_srcdir=$ac_top_build_prefix$srcdir$ac_dir_suffix
+    ac_top_srcdir=$ac_top_build_prefix$srcdir
+    ac_abs_top_srcdir=$ac_pwd/$srcdir ;;
+esac
+ac_abs_srcdir=$ac_abs_top_srcdir$ac_dir_suffix
+
+
+  case $ac_mode in
+  :F)
+  #
+  # CONFIG_FILE
+  #
+
+  case $INSTALL in
+  [\\/$]* | ?:[\\/]* ) ac_INSTALL=$INSTALL ;;
+  *) ac_INSTALL=$ac_top_build_prefix$INSTALL ;;
+  esac
+_ACEOF
+
+cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1
+# If the template does not know about datarootdir, expand it.
+# FIXME: This hack should be removed a few years after 2.60.
+ac_datarootdir_hack=; ac_datarootdir_seen=
+ac_sed_dataroot='
+/datarootdir/ {
+  p
+  q
+}
+/@datadir@/p
+/@docdir@/p
+/@infodir@/p
+/@localedir@/p
+/@mandir@/p'
+case `eval "sed -n \"\$ac_sed_dataroot\" $ac_file_inputs"` in
+*datarootdir*) ac_datarootdir_seen=yes;;
+*@datadir@*|*@docdir@*|*@infodir@*|*@localedir@*|*@mandir@*)
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: WARNING: $ac_file_inputs seems to ignore the --datarootdir setting" >&5
+printf "%s\n" "$as_me: WARNING: $ac_file_inputs seems to ignore the --datarootdir setting" >&2;}
+_ACEOF
+cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1
+  ac_datarootdir_hack='
+  s&@datadir@&$datadir&g
+  s&@docdir@&$docdir&g
+  s&@infodir@&$infodir&g
+  s&@localedir@&$localedir&g
+  s&@mandir@&$mandir&g
+  s&\\\${datarootdir}&$datarootdir&g' ;;
+esac
+_ACEOF
+
+# Neutralize VPATH when `$srcdir' = `.'.
+# Shell code in configure.ac might set extrasub.
+# FIXME: do we really want to maintain this feature?
+cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1
+ac_sed_extra="$ac_vpsub
+$extrasub
+_ACEOF
+cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1
+:t
+/@[a-zA-Z_][a-zA-Z_0-9]*@/!b
+s|@configure_input@|$ac_sed_conf_input|;t t
+s&@top_builddir@&$ac_top_builddir_sub&;t t
+s&@top_build_prefix@&$ac_top_build_prefix&;t t
+s&@srcdir@&$ac_srcdir&;t t
+s&@abs_srcdir@&$ac_abs_srcdir&;t t
+s&@top_srcdir@&$ac_top_srcdir&;t t
+s&@abs_top_srcdir@&$ac_abs_top_srcdir&;t t
+s&@builddir@&$ac_builddir&;t t
+s&@abs_builddir@&$ac_abs_builddir&;t t
+s&@abs_top_builddir@&$ac_abs_top_builddir&;t t
+s&@INSTALL@&$ac_INSTALL&;t t
+$ac_datarootdir_hack
+"
+eval sed \"\$ac_sed_extra\" "$ac_file_inputs" | $AWK -f "$ac_tmp/subs.awk" \
+  >$ac_tmp/out || as_fn_error $? "could not create $ac_file" "$LINENO" 5
+
+test -z "$ac_datarootdir_hack$ac_datarootdir_seen" &&
+  { ac_out=`sed -n '/\${datarootdir}/p' "$ac_tmp/out"`; test -n "$ac_out"; } &&
+  { ac_out=`sed -n '/^[	 ]*datarootdir[	 ]*:*=/p' \
+      "$ac_tmp/out"`; test -z "$ac_out"; } &&
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: WARNING: $ac_file contains a reference to the variable \`datarootdir'
+which seems to be undefined.  Please make sure it is defined" >&5
+printf "%s\n" "$as_me: WARNING: $ac_file contains a reference to the variable \`datarootdir'
+which seems to be undefined.  Please make sure it is defined" >&2;}
+
+  rm -f "$ac_tmp/stdin"
+  case $ac_file in
+  -) cat "$ac_tmp/out" && rm -f "$ac_tmp/out";;
+  *) rm -f "$ac_file" && mv "$ac_tmp/out" "$ac_file";;
+  esac \
+  || as_fn_error $? "could not create $ac_file" "$LINENO" 5
+ ;;
+  :H)
+  #
+  # CONFIG_HEADER
+  #
+  if test x"$ac_file" != x-; then
+    {
+      printf "%s\n" "/* $configure_input  */" >&1 \
+      && eval '$AWK -f "$ac_tmp/defines.awk"' "$ac_file_inputs"
+    } >"$ac_tmp/config.h" \
+      || as_fn_error $? "could not create $ac_file" "$LINENO" 5
+    if diff "$ac_file" "$ac_tmp/config.h" >/dev/null 2>&1; then
+      { printf "%s\n" "$as_me:${as_lineno-$LINENO}: $ac_file is unchanged" >&5
+printf "%s\n" "$as_me: $ac_file is unchanged" >&6;}
+    else
+      rm -f "$ac_file"
+      mv "$ac_tmp/config.h" "$ac_file" \
+	|| as_fn_error $? "could not create $ac_file" "$LINENO" 5
+    fi
+  else
+    printf "%s\n" "/* $configure_input  */" >&1 \
+      && eval '$AWK -f "$ac_tmp/defines.awk"' "$ac_file_inputs" \
+      || as_fn_error $? "could not create -" "$LINENO" 5
+  fi
+ ;;
+
+  :C)  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: executing $ac_file commands" >&5
+printf "%s\n" "$as_me: executing $ac_file commands" >&6;}
+ ;;
+  esac
+
+
+  case $ac_file$ac_mode in
+    "include/jemalloc/internal/public_symbols.txt":C)
+  f="${objroot}include/jemalloc/internal/public_symbols.txt"
+  mkdir -p "${objroot}include/jemalloc/internal"
+  cp /dev/null "${f}"
+  for nm in `echo ${mangling_map} |tr ',' ' '` ; do
+    n=`echo ${nm} |tr ':' ' ' |awk '{print $1}'`
+    m=`echo ${nm} |tr ':' ' ' |awk '{print $2}'`
+    echo "${n}:${m}" >> "${f}"
+        public_syms=`for sym in ${public_syms}; do echo "${sym}"; done |grep -v "^${n}\$" |tr '\n' ' '`
+  done
+  for sym in ${public_syms} ; do
+    n="${sym}"
+    m="${JEMALLOC_PREFIX}${sym}"
+    echo "${n}:${m}" >> "${f}"
+  done
+ ;;
+    "include/jemalloc/internal/private_symbols.awk":C)
+  f="${objroot}include/jemalloc/internal/private_symbols.awk"
+  mkdir -p "${objroot}include/jemalloc/internal"
+  export_syms=`for sym in ${public_syms}; do echo "${JEMALLOC_PREFIX}${sym}"; done; for sym in ${wrap_syms}; do echo "${sym}"; done;`
+  "${srcdir}/include/jemalloc/internal/private_symbols.sh" "${SYM_PREFIX}" ${export_syms} > "${objroot}include/jemalloc/internal/private_symbols.awk"
+ ;;
+    "include/jemalloc/internal/private_symbols_jet.awk":C)
+  f="${objroot}include/jemalloc/internal/private_symbols_jet.awk"
+  mkdir -p "${objroot}include/jemalloc/internal"
+  export_syms=`for sym in ${public_syms}; do echo "jet_${sym}"; done; for sym in ${wrap_syms}; do echo "${sym}"; done;`
+  "${srcdir}/include/jemalloc/internal/private_symbols.sh" "${SYM_PREFIX}" ${export_syms} > "${objroot}include/jemalloc/internal/private_symbols_jet.awk"
+ ;;
+    "include/jemalloc/internal/public_namespace.h":C)
+  mkdir -p "${objroot}include/jemalloc/internal"
+  "${srcdir}/include/jemalloc/internal/public_namespace.sh" "${objroot}include/jemalloc/internal/public_symbols.txt" > "${objroot}include/jemalloc/internal/public_namespace.h"
+ ;;
+    "include/jemalloc/internal/public_unnamespace.h":C)
+  mkdir -p "${objroot}include/jemalloc/internal"
+  "${srcdir}/include/jemalloc/internal/public_unnamespace.sh" "${objroot}include/jemalloc/internal/public_symbols.txt" > "${objroot}include/jemalloc/internal/public_unnamespace.h"
+ ;;
+    "include/jemalloc/jemalloc_protos_jet.h":C)
+  mkdir -p "${objroot}include/jemalloc"
+  cat "${srcdir}/include/jemalloc/jemalloc_protos.h.in" | sed -e 's/@je_@/jet_/g' > "${objroot}include/jemalloc/jemalloc_protos_jet.h"
+ ;;
+    "include/jemalloc/jemalloc_rename.h":C)
+  mkdir -p "${objroot}include/jemalloc"
+  "${srcdir}/include/jemalloc/jemalloc_rename.sh" "${objroot}include/jemalloc/internal/public_symbols.txt" > "${objroot}include/jemalloc/jemalloc_rename.h"
+ ;;
+    "include/jemalloc/jemalloc_mangle.h":C)
+  mkdir -p "${objroot}include/jemalloc"
+  "${srcdir}/include/jemalloc/jemalloc_mangle.sh" "${objroot}include/jemalloc/internal/public_symbols.txt" je_ > "${objroot}include/jemalloc/jemalloc_mangle.h"
+ ;;
+    "include/jemalloc/jemalloc_mangle_jet.h":C)
+  mkdir -p "${objroot}include/jemalloc"
+  "${srcdir}/include/jemalloc/jemalloc_mangle.sh" "${objroot}include/jemalloc/internal/public_symbols.txt" jet_ > "${objroot}include/jemalloc/jemalloc_mangle_jet.h"
+ ;;
+    "include/jemalloc/jemalloc.h":C)
+  mkdir -p "${objroot}include/jemalloc"
+  "${srcdir}/include/jemalloc/jemalloc.sh" "${objroot}" > "${objroot}include/jemalloc/jemalloc${install_suffix}.h"
+ ;;
+
+  esac
+done # for ac_tag
+
+
+as_fn_exit 0
+_ACEOF
+ac_clean_files=$ac_clean_files_save
+
+test $ac_write_fail = 0 ||
+  as_fn_error $? "write failure creating $CONFIG_STATUS" "$LINENO" 5
+
+
+# configure is writing to config.log, and then calls config.status.
+# config.status does its own redirection, appending to config.log.
+# Unfortunately, on DOS this fails, as config.log is still kept open
+# by configure, so config.status won't be able to write to it; its
+# output is simply discarded.  So we exec the FD to /dev/null,
+# effectively closing config.log, so it can be properly (re)opened and
+# appended to by config.status.  When coming back to configure, we
+# need to make the FD available again.
+if test "$no_create" != yes; then
+  ac_cs_success=:
+  ac_config_status_args=
+  test "$silent" = yes &&
+    ac_config_status_args="$ac_config_status_args --quiet"
+  exec 5>/dev/null
+  $SHELL $CONFIG_STATUS $ac_config_status_args || ac_cs_success=false
+  exec 5>>config.log
+  # Use ||, not &&, to avoid exiting from the if with $? = 1, which
+  # would make configure fail if this is the last instruction.
+  $ac_cs_success || as_fn_exit 1
+fi
+if test -n "$ac_unrecognized_opts" && test "$enable_option_checking" != no; then
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: WARNING: unrecognized options: $ac_unrecognized_opts" >&5
+printf "%s\n" "$as_me: WARNING: unrecognized options: $ac_unrecognized_opts" >&2;}
+fi
+
+
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: ===============================================================================" >&5
+printf "%s\n" "===============================================================================" >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: jemalloc version   : ${jemalloc_version}" >&5
+printf "%s\n" "jemalloc version   : ${jemalloc_version}" >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: library revision   : ${rev}" >&5
+printf "%s\n" "library revision   : ${rev}" >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: " >&5
+printf "%s\n" "" >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: CONFIG             : ${CONFIG}" >&5
+printf "%s\n" "CONFIG             : ${CONFIG}" >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: CC                 : ${CC}" >&5
+printf "%s\n" "CC                 : ${CC}" >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: CONFIGURE_CFLAGS   : ${CONFIGURE_CFLAGS}" >&5
+printf "%s\n" "CONFIGURE_CFLAGS   : ${CONFIGURE_CFLAGS}" >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: SPECIFIED_CFLAGS   : ${SPECIFIED_CFLAGS}" >&5
+printf "%s\n" "SPECIFIED_CFLAGS   : ${SPECIFIED_CFLAGS}" >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: EXTRA_CFLAGS       : ${EXTRA_CFLAGS}" >&5
+printf "%s\n" "EXTRA_CFLAGS       : ${EXTRA_CFLAGS}" >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: CPPFLAGS           : ${CPPFLAGS}" >&5
+printf "%s\n" "CPPFLAGS           : ${CPPFLAGS}" >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: CXX                : ${CXX}" >&5
+printf "%s\n" "CXX                : ${CXX}" >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: CONFIGURE_CXXFLAGS : ${CONFIGURE_CXXFLAGS}" >&5
+printf "%s\n" "CONFIGURE_CXXFLAGS : ${CONFIGURE_CXXFLAGS}" >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: SPECIFIED_CXXFLAGS : ${SPECIFIED_CXXFLAGS}" >&5
+printf "%s\n" "SPECIFIED_CXXFLAGS : ${SPECIFIED_CXXFLAGS}" >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: EXTRA_CXXFLAGS     : ${EXTRA_CXXFLAGS}" >&5
+printf "%s\n" "EXTRA_CXXFLAGS     : ${EXTRA_CXXFLAGS}" >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: LDFLAGS            : ${LDFLAGS}" >&5
+printf "%s\n" "LDFLAGS            : ${LDFLAGS}" >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: EXTRA_LDFLAGS      : ${EXTRA_LDFLAGS}" >&5
+printf "%s\n" "EXTRA_LDFLAGS      : ${EXTRA_LDFLAGS}" >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: DSO_LDFLAGS        : ${DSO_LDFLAGS}" >&5
+printf "%s\n" "DSO_LDFLAGS        : ${DSO_LDFLAGS}" >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: LIBS               : ${LIBS}" >&5
+printf "%s\n" "LIBS               : ${LIBS}" >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: RPATH_EXTRA        : ${RPATH_EXTRA}" >&5
+printf "%s\n" "RPATH_EXTRA        : ${RPATH_EXTRA}" >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: " >&5
+printf "%s\n" "" >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: XSLTPROC           : ${XSLTPROC}" >&5
+printf "%s\n" "XSLTPROC           : ${XSLTPROC}" >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: XSLROOT            : ${XSLROOT}" >&5
+printf "%s\n" "XSLROOT            : ${XSLROOT}" >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: " >&5
+printf "%s\n" "" >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: PREFIX             : ${PREFIX}" >&5
+printf "%s\n" "PREFIX             : ${PREFIX}" >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: BINDIR             : ${BINDIR}" >&5
+printf "%s\n" "BINDIR             : ${BINDIR}" >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: DATADIR            : ${DATADIR}" >&5
+printf "%s\n" "DATADIR            : ${DATADIR}" >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: INCLUDEDIR         : ${INCLUDEDIR}" >&5
+printf "%s\n" "INCLUDEDIR         : ${INCLUDEDIR}" >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: LIBDIR             : ${LIBDIR}" >&5
+printf "%s\n" "LIBDIR             : ${LIBDIR}" >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: MANDIR             : ${MANDIR}" >&5
+printf "%s\n" "MANDIR             : ${MANDIR}" >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: " >&5
+printf "%s\n" "" >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: srcroot            : ${srcroot}" >&5
+printf "%s\n" "srcroot            : ${srcroot}" >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: abs_srcroot        : ${abs_srcroot}" >&5
+printf "%s\n" "abs_srcroot        : ${abs_srcroot}" >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: objroot            : ${objroot}" >&5
+printf "%s\n" "objroot            : ${objroot}" >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: abs_objroot        : ${abs_objroot}" >&5
+printf "%s\n" "abs_objroot        : ${abs_objroot}" >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: " >&5
+printf "%s\n" "" >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: JEMALLOC_PREFIX    : ${JEMALLOC_PREFIX}" >&5
+printf "%s\n" "JEMALLOC_PREFIX    : ${JEMALLOC_PREFIX}" >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: JEMALLOC_PRIVATE_NAMESPACE" >&5
+printf "%s\n" "JEMALLOC_PRIVATE_NAMESPACE" >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result:                    : ${JEMALLOC_PRIVATE_NAMESPACE}" >&5
+printf "%s\n" "                   : ${JEMALLOC_PRIVATE_NAMESPACE}" >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: install_suffix     : ${install_suffix}" >&5
+printf "%s\n" "install_suffix     : ${install_suffix}" >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: malloc_conf        : ${config_malloc_conf}" >&5
+printf "%s\n" "malloc_conf        : ${config_malloc_conf}" >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: documentation      : ${enable_doc}" >&5
+printf "%s\n" "documentation      : ${enable_doc}" >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: shared libs        : ${enable_shared}" >&5
+printf "%s\n" "shared libs        : ${enable_shared}" >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: static libs        : ${enable_static}" >&5
+printf "%s\n" "static libs        : ${enable_static}" >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: autogen            : ${enable_autogen}" >&5
+printf "%s\n" "autogen            : ${enable_autogen}" >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: debug              : ${enable_debug}" >&5
+printf "%s\n" "debug              : ${enable_debug}" >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: stats              : ${enable_stats}" >&5
+printf "%s\n" "stats              : ${enable_stats}" >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: experimental_smallocx : ${enable_experimental_smallocx}" >&5
+printf "%s\n" "experimental_smallocx : ${enable_experimental_smallocx}" >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: prof               : ${enable_prof}" >&5
+printf "%s\n" "prof               : ${enable_prof}" >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: prof-libunwind     : ${enable_prof_libunwind}" >&5
+printf "%s\n" "prof-libunwind     : ${enable_prof_libunwind}" >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: prof-libgcc        : ${enable_prof_libgcc}" >&5
+printf "%s\n" "prof-libgcc        : ${enable_prof_libgcc}" >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: prof-gcc           : ${enable_prof_gcc}" >&5
+printf "%s\n" "prof-gcc           : ${enable_prof_gcc}" >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: fill               : ${enable_fill}" >&5
+printf "%s\n" "fill               : ${enable_fill}" >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: utrace             : ${enable_utrace}" >&5
+printf "%s\n" "utrace             : ${enable_utrace}" >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: xmalloc            : ${enable_xmalloc}" >&5
+printf "%s\n" "xmalloc            : ${enable_xmalloc}" >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: log                : ${enable_log}" >&5
+printf "%s\n" "log                : ${enable_log}" >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: lazy_lock          : ${enable_lazy_lock}" >&5
+printf "%s\n" "lazy_lock          : ${enable_lazy_lock}" >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: cache-oblivious    : ${enable_cache_oblivious}" >&5
+printf "%s\n" "cache-oblivious    : ${enable_cache_oblivious}" >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: cxx                : ${enable_cxx}" >&5
+printf "%s\n" "cxx                : ${enable_cxx}" >&6; }
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: ===============================================================================" >&5
+printf "%s\n" "===============================================================================" >&6; }
+
diff --git a/deps/jemalloc/configure.ac b/deps/jemalloc/configure.ac
new file mode 100644
index 0000000..5190bfe
--- /dev/null
+++ b/deps/jemalloc/configure.ac
@@ -0,0 +1,2669 @@
+dnl Process this file with autoconf to produce a configure script.
+AC_PREREQ(2.68)
+AC_INIT([Makefile.in])
+
+AC_CONFIG_AUX_DIR([build-aux])
+
+dnl ============================================================================
+dnl Custom macro definitions.
+
+dnl JE_CONCAT_VVV(r, a, b)
+dnl
+dnl Set $r to the concatenation of $a and $b, with a space separating them iff
+dnl both $a and $b are non-empty.
+AC_DEFUN([JE_CONCAT_VVV],
+if test "x[$]{$2}" = "x" -o "x[$]{$3}" = "x" ; then
+  $1="[$]{$2}[$]{$3}"
+else
+  $1="[$]{$2} [$]{$3}"
+fi
+)
+
+dnl JE_APPEND_VS(a, b)
+dnl
+dnl Set $a to the concatenation of $a and b, with a space separating them iff
+dnl both $a and b are non-empty.
+AC_DEFUN([JE_APPEND_VS],
+  T_APPEND_V=$2
+  JE_CONCAT_VVV($1, $1, T_APPEND_V)
+)
+
+CONFIGURE_CFLAGS=
+SPECIFIED_CFLAGS="${CFLAGS}"
+dnl JE_CFLAGS_ADD(cflag)
+dnl
+dnl CFLAGS is the concatenation of CONFIGURE_CFLAGS and SPECIFIED_CFLAGS
+dnl (ignoring EXTRA_CFLAGS, which does not impact configure tests.  This macro
+dnl appends to CONFIGURE_CFLAGS and regenerates CFLAGS.
+AC_DEFUN([JE_CFLAGS_ADD],
+[
+AC_MSG_CHECKING([whether compiler supports $1])
+T_CONFIGURE_CFLAGS="${CONFIGURE_CFLAGS}"
+JE_APPEND_VS(CONFIGURE_CFLAGS, $1)
+JE_CONCAT_VVV(CFLAGS, CONFIGURE_CFLAGS, SPECIFIED_CFLAGS)
+AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
+[[
+]], [[
+    return 0;
+]])],
+              [je_cv_cflags_added=$1]
+              AC_MSG_RESULT([yes]),
+              [je_cv_cflags_added=]
+              AC_MSG_RESULT([no])
+              [CONFIGURE_CFLAGS="${T_CONFIGURE_CFLAGS}"]
+)
+JE_CONCAT_VVV(CFLAGS, CONFIGURE_CFLAGS, SPECIFIED_CFLAGS)
+])
+
+dnl JE_CFLAGS_SAVE()
+dnl JE_CFLAGS_RESTORE()
+dnl
+dnl Save/restore CFLAGS.  Nesting is not supported.
+AC_DEFUN([JE_CFLAGS_SAVE],
+SAVED_CONFIGURE_CFLAGS="${CONFIGURE_CFLAGS}"
+)
+AC_DEFUN([JE_CFLAGS_RESTORE],
+CONFIGURE_CFLAGS="${SAVED_CONFIGURE_CFLAGS}"
+JE_CONCAT_VVV(CFLAGS, CONFIGURE_CFLAGS, SPECIFIED_CFLAGS)
+)
+
+CONFIGURE_CXXFLAGS=
+SPECIFIED_CXXFLAGS="${CXXFLAGS}"
+dnl JE_CXXFLAGS_ADD(cxxflag)
+AC_DEFUN([JE_CXXFLAGS_ADD],
+[
+AC_MSG_CHECKING([whether compiler supports $1])
+T_CONFIGURE_CXXFLAGS="${CONFIGURE_CXXFLAGS}"
+JE_APPEND_VS(CONFIGURE_CXXFLAGS, $1)
+JE_CONCAT_VVV(CXXFLAGS, CONFIGURE_CXXFLAGS, SPECIFIED_CXXFLAGS)
+AC_LANG_PUSH([C++])
+AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
+[[
+]], [[
+    return 0;
+]])],
+              [je_cv_cxxflags_added=$1]
+              AC_MSG_RESULT([yes]),
+              [je_cv_cxxflags_added=]
+              AC_MSG_RESULT([no])
+              [CONFIGURE_CXXFLAGS="${T_CONFIGURE_CXXFLAGS}"]
+)
+AC_LANG_POP([C++])
+JE_CONCAT_VVV(CXXFLAGS, CONFIGURE_CXXFLAGS, SPECIFIED_CXXFLAGS)
+])
+
+dnl JE_COMPILABLE(label, hcode, mcode, rvar)
+dnl
+dnl Use AC_LINK_IFELSE() rather than AC_COMPILE_IFELSE() so that linker errors
+dnl cause failure.
+AC_DEFUN([JE_COMPILABLE],
+[
+AC_CACHE_CHECK([whether $1 is compilable],
+               [$4],
+               [AC_LINK_IFELSE([AC_LANG_PROGRAM([$2],
+                                                [$3])],
+                               [$4=yes],
+                               [$4=no])])
+])
+
+dnl ============================================================================
+
+CONFIG=`echo ${ac_configure_args} | sed -e 's#'"'"'\([^ ]*\)'"'"'#\1#g'`
+AC_SUBST([CONFIG])
+
+dnl Library revision.
+rev=2
+AC_SUBST([rev])
+
+srcroot=$srcdir
+if test "x${srcroot}" = "x." ; then
+  srcroot=""
+else
+  srcroot="${srcroot}/"
+fi
+AC_SUBST([srcroot])
+abs_srcroot="`cd \"${srcdir}\"; pwd`/"
+AC_SUBST([abs_srcroot])
+
+objroot=""
+AC_SUBST([objroot])
+abs_objroot="`pwd`/"
+AC_SUBST([abs_objroot])
+
+dnl Munge install path variables.
+case "$prefix" in
+   *\ * ) AC_MSG_ERROR([Prefix should not contain spaces]) ;;
+   "NONE" ) prefix="/usr/local" ;;
+esac
+case "$exec_prefix" in
+   *\ * ) AC_MSG_ERROR([Exec prefix should not contain spaces]) ;;
+   "NONE" ) exec_prefix=$prefix ;;
+esac
+PREFIX=$prefix
+AC_SUBST([PREFIX])
+BINDIR=`eval echo $bindir`
+BINDIR=`eval echo $BINDIR`
+AC_SUBST([BINDIR])
+INCLUDEDIR=`eval echo $includedir`
+INCLUDEDIR=`eval echo $INCLUDEDIR`
+AC_SUBST([INCLUDEDIR])
+LIBDIR=`eval echo $libdir`
+LIBDIR=`eval echo $LIBDIR`
+AC_SUBST([LIBDIR])
+DATADIR=`eval echo $datadir`
+DATADIR=`eval echo $DATADIR`
+AC_SUBST([DATADIR])
+MANDIR=`eval echo $mandir`
+MANDIR=`eval echo $MANDIR`
+AC_SUBST([MANDIR])
+
+dnl Support for building documentation.
+AC_PATH_PROG([XSLTPROC], [xsltproc], [false], [$PATH])
+if test -d "/usr/share/xml/docbook/stylesheet/docbook-xsl" ; then
+  DEFAULT_XSLROOT="/usr/share/xml/docbook/stylesheet/docbook-xsl"
+elif test -d "/usr/share/sgml/docbook/xsl-stylesheets" ; then
+  DEFAULT_XSLROOT="/usr/share/sgml/docbook/xsl-stylesheets"
+else
+  dnl Documentation building will fail if this default gets used.
+  DEFAULT_XSLROOT=""
+fi
+AC_ARG_WITH([xslroot],
+  [AS_HELP_STRING([--with-xslroot=<path>], [XSL stylesheet root path])], [
+if test "x$with_xslroot" = "xno" ; then
+  XSLROOT="${DEFAULT_XSLROOT}"
+else
+  XSLROOT="${with_xslroot}"
+fi
+],
+  XSLROOT="${DEFAULT_XSLROOT}"
+)
+if test "x$XSLTPROC" = "xfalse" ; then
+  XSLROOT=""
+fi
+AC_SUBST([XSLROOT])
+
+dnl If CFLAGS isn't defined, set CFLAGS to something reasonable.  Otherwise,
+dnl just prevent autoconf from molesting CFLAGS.
+CFLAGS=$CFLAGS
+AC_PROG_CC
+
+if test "x$GCC" != "xyes" ; then
+  AC_CACHE_CHECK([whether compiler is MSVC],
+                 [je_cv_msvc],
+                 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([],
+                                                     [
+#ifndef _MSC_VER
+  int fail[-1];
+#endif
+])],
+                               [je_cv_msvc=yes],
+                               [je_cv_msvc=no])])
+fi
+
+dnl check if a cray prgenv wrapper compiler is being used
+je_cv_cray_prgenv_wrapper=""
+if test "x${PE_ENV}" != "x" ; then
+  case "${CC}" in
+    CC|cc)
+	je_cv_cray_prgenv_wrapper="yes"
+	;;
+    *)
+       ;;
+  esac
+fi
+
+AC_CACHE_CHECK([whether compiler is cray],
+              [je_cv_cray],
+              [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([],
+                                                  [
+#ifndef _CRAYC
+  int fail[-1];
+#endif
+])],
+                            [je_cv_cray=yes],
+                            [je_cv_cray=no])])
+
+if test "x${je_cv_cray}" = "xyes" ; then
+  AC_CACHE_CHECK([whether cray compiler version is 8.4],
+                [je_cv_cray_84],
+                [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([],
+                                                      [
+#if !(_RELEASE_MAJOR == 8 && _RELEASE_MINOR == 4)
+  int fail[-1];
+#endif
+])],
+                              [je_cv_cray_84=yes],
+                              [je_cv_cray_84=no])])
+fi
+
+if test "x$GCC" = "xyes" ; then
+  JE_CFLAGS_ADD([-std=gnu11])
+  if test "x$je_cv_cflags_added" = "x-std=gnu11" ; then
+    AC_DEFINE_UNQUOTED([JEMALLOC_HAS_RESTRICT], [ ], [ ])
+  else
+    JE_CFLAGS_ADD([-std=gnu99])
+    if test "x$je_cv_cflags_added" = "x-std=gnu99" ; then
+      AC_DEFINE_UNQUOTED([JEMALLOC_HAS_RESTRICT], [ ], [ ])
+    fi
+  fi
+  JE_CFLAGS_ADD([-Werror=unknown-warning-option])
+  JE_CFLAGS_ADD([-Wall])
+  JE_CFLAGS_ADD([-Wextra])
+  JE_CFLAGS_ADD([-Wshorten-64-to-32])
+  JE_CFLAGS_ADD([-Wsign-compare])
+  JE_CFLAGS_ADD([-Wundef])
+  JE_CFLAGS_ADD([-Wno-format-zero-length])
+  JE_CFLAGS_ADD([-Wpointer-arith])
+  dnl This warning triggers on the use of the universal zero initializer, which
+  dnl is a very handy idiom for things like the tcache static initializer (which
+  dnl has lots of nested structs).  See the discussion at.
+  dnl https://gcc.gnu.org/bugzilla/show_bug.cgi?id=53119
+  JE_CFLAGS_ADD([-Wno-missing-braces])
+  dnl This one too.
+  JE_CFLAGS_ADD([-Wno-missing-field-initializers])
+  JE_CFLAGS_ADD([-Wno-missing-attributes])
+  JE_CFLAGS_ADD([-pipe])
+  JE_CFLAGS_ADD([-g3])
+elif test "x$je_cv_msvc" = "xyes" ; then
+  CC="$CC -nologo"
+  JE_CFLAGS_ADD([-Zi])
+  JE_CFLAGS_ADD([-MT])
+  JE_CFLAGS_ADD([-W3])
+  JE_CFLAGS_ADD([-FS])
+  JE_APPEND_VS(CPPFLAGS, -I${srcdir}/include/msvc_compat)
+fi
+if test "x$je_cv_cray" = "xyes" ; then
+  dnl cray compiler 8.4 has an inlining bug
+  if test "x$je_cv_cray_84" = "xyes" ; then
+    JE_CFLAGS_ADD([-hipa2])
+    JE_CFLAGS_ADD([-hnognu])
+  fi
+  dnl ignore unreachable code warning
+  JE_CFLAGS_ADD([-hnomessage=128])
+  dnl ignore redefinition of "malloc", "free", etc warning
+  JE_CFLAGS_ADD([-hnomessage=1357])
+fi
+AC_SUBST([CONFIGURE_CFLAGS])
+AC_SUBST([SPECIFIED_CFLAGS])
+AC_SUBST([EXTRA_CFLAGS])
+AC_PROG_CPP
+
+AC_ARG_ENABLE([cxx],
+  [AS_HELP_STRING([--disable-cxx], [Disable C++ integration])],
+if test "x$enable_cxx" = "xno" ; then
+  enable_cxx="0"
+else
+  enable_cxx="1"
+fi
+,
+enable_cxx="1"
+)
+if test "x$enable_cxx" = "x1" ; then
+  dnl Require at least c++14, which is the first version to support sized
+  dnl deallocation.  C++ support is not compiled otherwise.
+  m4_include([m4/ax_cxx_compile_stdcxx.m4])
+  AX_CXX_COMPILE_STDCXX([17], [noext], [optional])
+  if test "x${HAVE_CXX17}" != "x1"; then
+    AX_CXX_COMPILE_STDCXX([14], [noext], [optional])
+  fi
+  if test "x${HAVE_CXX14}" = "x1" -o "x${HAVE_CXX17}" = "x1"; then
+    JE_CXXFLAGS_ADD([-Wall])
+    JE_CXXFLAGS_ADD([-Wextra])
+    JE_CXXFLAGS_ADD([-g3])
+
+    SAVED_LIBS="${LIBS}"
+    JE_APPEND_VS(LIBS, -lstdc++)
+    JE_COMPILABLE([libstdc++ linkage], [
+#include <stdlib.h>
+], [[
+	int *arr = (int *)malloc(sizeof(int) * 42);
+	if (arr == NULL)
+		return 1;
+]], [je_cv_libstdcxx])
+    if test "x${je_cv_libstdcxx}" = "xno" ; then
+      LIBS="${SAVED_LIBS}"
+    fi
+  else
+    enable_cxx="0"
+  fi
+fi
+if test "x$enable_cxx" = "x1"; then
+  AC_DEFINE([JEMALLOC_ENABLE_CXX], [ ], [ ])
+fi
+AC_SUBST([enable_cxx])
+AC_SUBST([CONFIGURE_CXXFLAGS])
+AC_SUBST([SPECIFIED_CXXFLAGS])
+AC_SUBST([EXTRA_CXXFLAGS])
+
+AC_C_BIGENDIAN([ac_cv_big_endian=1], [ac_cv_big_endian=0])
+if test "x${ac_cv_big_endian}" = "x1" ; then
+  AC_DEFINE_UNQUOTED([JEMALLOC_BIG_ENDIAN], [ ], [ ])
+fi
+
+if test "x${je_cv_msvc}" = "xyes" -a "x${ac_cv_header_inttypes_h}" = "xno"; then
+  JE_APPEND_VS(CPPFLAGS, -I${srcdir}/include/msvc_compat/C99)
+fi
+
+if test "x${je_cv_msvc}" = "xyes" ; then
+  LG_SIZEOF_PTR=LG_SIZEOF_PTR_WIN
+  AC_MSG_RESULT([Using a predefined value for sizeof(void *): 4 for 32-bit, 8 for 64-bit])
+else
+  AC_CHECK_SIZEOF([void *])
+  if test "x${ac_cv_sizeof_void_p}" = "x8" ; then
+    LG_SIZEOF_PTR=3
+  elif test "x${ac_cv_sizeof_void_p}" = "x4" ; then
+    LG_SIZEOF_PTR=2
+  else
+    AC_MSG_ERROR([Unsupported pointer size: ${ac_cv_sizeof_void_p}])
+  fi
+fi
+AC_DEFINE_UNQUOTED([LG_SIZEOF_PTR], [$LG_SIZEOF_PTR], [ ])
+
+AC_CHECK_SIZEOF([int])
+if test "x${ac_cv_sizeof_int}" = "x8" ; then
+  LG_SIZEOF_INT=3
+elif test "x${ac_cv_sizeof_int}" = "x4" ; then
+  LG_SIZEOF_INT=2
+else
+  AC_MSG_ERROR([Unsupported int size: ${ac_cv_sizeof_int}])
+fi
+AC_DEFINE_UNQUOTED([LG_SIZEOF_INT], [$LG_SIZEOF_INT], [ ])
+
+AC_CHECK_SIZEOF([long])
+if test "x${ac_cv_sizeof_long}" = "x8" ; then
+  LG_SIZEOF_LONG=3
+elif test "x${ac_cv_sizeof_long}" = "x4" ; then
+  LG_SIZEOF_LONG=2
+else
+  AC_MSG_ERROR([Unsupported long size: ${ac_cv_sizeof_long}])
+fi
+AC_DEFINE_UNQUOTED([LG_SIZEOF_LONG], [$LG_SIZEOF_LONG], [ ])
+
+AC_CHECK_SIZEOF([long long])
+if test "x${ac_cv_sizeof_long_long}" = "x8" ; then
+  LG_SIZEOF_LONG_LONG=3
+elif test "x${ac_cv_sizeof_long_long}" = "x4" ; then
+  LG_SIZEOF_LONG_LONG=2
+else
+  AC_MSG_ERROR([Unsupported long long size: ${ac_cv_sizeof_long_long}])
+fi
+AC_DEFINE_UNQUOTED([LG_SIZEOF_LONG_LONG], [$LG_SIZEOF_LONG_LONG], [ ])
+
+AC_CHECK_SIZEOF([intmax_t])
+if test "x${ac_cv_sizeof_intmax_t}" = "x16" ; then
+  LG_SIZEOF_INTMAX_T=4
+elif test "x${ac_cv_sizeof_intmax_t}" = "x8" ; then
+  LG_SIZEOF_INTMAX_T=3
+elif test "x${ac_cv_sizeof_intmax_t}" = "x4" ; then
+  LG_SIZEOF_INTMAX_T=2
+else
+  AC_MSG_ERROR([Unsupported intmax_t size: ${ac_cv_sizeof_intmax_t}])
+fi
+AC_DEFINE_UNQUOTED([LG_SIZEOF_INTMAX_T], [$LG_SIZEOF_INTMAX_T], [ ])
+
+AC_CANONICAL_HOST
+dnl CPU-specific settings.
+CPU_SPINWAIT=""
+case "${host_cpu}" in
+  i686|x86_64)
+	HAVE_CPU_SPINWAIT=1
+	if test "x${je_cv_msvc}" = "xyes" ; then
+	    AC_CACHE_VAL([je_cv_pause_msvc],
+	      [JE_COMPILABLE([pause instruction MSVC], [],
+					[[_mm_pause(); return 0;]],
+					[je_cv_pause_msvc])])
+	    if test "x${je_cv_pause_msvc}" = "xyes" ; then
+		CPU_SPINWAIT='_mm_pause()'
+	    fi
+	else
+	    AC_CACHE_VAL([je_cv_pause],
+	      [JE_COMPILABLE([pause instruction], [],
+					[[__asm__ volatile("pause"); return 0;]],
+					[je_cv_pause])])
+	    if test "x${je_cv_pause}" = "xyes" ; then
+		CPU_SPINWAIT='__asm__ volatile("pause")'
+	    fi
+	fi
+	;;
+  aarch64|arm*)
+	HAVE_CPU_SPINWAIT=1
+	dnl isb is a better equivalent to the pause instruction on x86.
+	AC_CACHE_VAL([je_cv_isb],
+	  [JE_COMPILABLE([isb instruction], [],
+			[[__asm__ volatile("isb"); return 0;]],
+			[je_cv_isb])])
+	if test "x${je_cv_isb}" = "xyes" ; then
+	    CPU_SPINWAIT='__asm__ volatile("isb")'
+	fi
+	;;
+  *)
+	HAVE_CPU_SPINWAIT=0
+	;;
+esac
+AC_DEFINE_UNQUOTED([HAVE_CPU_SPINWAIT], [$HAVE_CPU_SPINWAIT], [ ])
+AC_DEFINE_UNQUOTED([CPU_SPINWAIT], [$CPU_SPINWAIT], [ ])
+
+AC_ARG_WITH([lg_vaddr],
+  [AS_HELP_STRING([--with-lg-vaddr=<lg-vaddr>], [Number of significant virtual address bits])],
+  [LG_VADDR="$with_lg_vaddr"], [LG_VADDR="detect"])
+
+case "${host_cpu}" in
+  aarch64)
+    if test "x$LG_VADDR" = "xdetect"; then
+      AC_MSG_CHECKING([number of significant virtual address bits])
+      if test "x${LG_SIZEOF_PTR}" = "x2" ; then
+        #aarch64 ILP32
+        LG_VADDR=32
+      else
+        #aarch64 LP64
+        LG_VADDR=48
+      fi
+      AC_MSG_RESULT([$LG_VADDR])
+    fi
+    ;;
+  x86_64)
+    if test "x$LG_VADDR" = "xdetect"; then
+      AC_CACHE_CHECK([number of significant virtual address bits],
+                     [je_cv_lg_vaddr],
+                     AC_RUN_IFELSE([AC_LANG_PROGRAM(
+[[
+#include <stdio.h>
+#ifdef _WIN32
+#include <limits.h>
+#include <intrin.h>
+typedef unsigned __int32 uint32_t;
+#else
+#include <stdint.h>
+#endif
+]], [[
+	uint32_t r[[4]];
+	uint32_t eax_in = 0x80000008U;
+#ifdef _WIN32
+	__cpuid((int *)r, (int)eax_in);
+#else
+	asm volatile ("cpuid"
+	    : "=a" (r[[0]]), "=b" (r[[1]]), "=c" (r[[2]]), "=d" (r[[3]])
+	    : "a" (eax_in), "c" (0)
+	);
+#endif
+	uint32_t eax_out = r[[0]];
+	uint32_t vaddr = ((eax_out & 0x0000ff00U) >> 8);
+	FILE *f = fopen("conftest.out", "w");
+	if (f == NULL) {
+		return 1;
+	}
+	if (vaddr > (sizeof(void *) << 3)) {
+		vaddr = sizeof(void *) << 3;
+	}
+	fprintf(f, "%u", vaddr);
+	fclose(f);
+	return 0;
+]])],
+                   [je_cv_lg_vaddr=`cat conftest.out`],
+                   [je_cv_lg_vaddr=error],
+                   [je_cv_lg_vaddr=57]))
+      if test "x${je_cv_lg_vaddr}" != "x" ; then
+        LG_VADDR="${je_cv_lg_vaddr}"
+      fi
+      if test "x${LG_VADDR}" != "xerror" ; then
+        AC_DEFINE_UNQUOTED([LG_VADDR], [$LG_VADDR], [ ])
+      else
+        AC_MSG_ERROR([cannot determine number of significant virtual address bits])
+      fi
+    fi
+    ;;
+  *)
+    if test "x$LG_VADDR" = "xdetect"; then
+      AC_MSG_CHECKING([number of significant virtual address bits])
+      if test "x${LG_SIZEOF_PTR}" = "x3" ; then
+        LG_VADDR=64
+      elif test "x${LG_SIZEOF_PTR}" = "x2" ; then
+        LG_VADDR=32
+      elif test "x${LG_SIZEOF_PTR}" = "xLG_SIZEOF_PTR_WIN" ; then
+        LG_VADDR="(1U << (LG_SIZEOF_PTR_WIN+3))"
+      else
+        AC_MSG_ERROR([Unsupported lg(pointer size): ${LG_SIZEOF_PTR}])
+      fi
+      AC_MSG_RESULT([$LG_VADDR])
+    fi
+    ;;
+esac
+AC_DEFINE_UNQUOTED([LG_VADDR], [$LG_VADDR], [ ])
+
+LD_PRELOAD_VAR="LD_PRELOAD"
+so="so"
+importlib="${so}"
+o="$ac_objext"
+a="a"
+exe="$ac_exeext"
+libprefix="lib"
+link_whole_archive="0"
+DSO_LDFLAGS='-shared -Wl,-soname,$(@F)'
+RPATH='-Wl,-rpath,$(1)'
+SOREV="${so}.${rev}"
+PIC_CFLAGS='-fPIC -DPIC'
+CTARGET='-o $@'
+LDTARGET='-o $@'
+TEST_LD_MODE=
+EXTRA_LDFLAGS=
+ARFLAGS='crs'
+AROUT=' $@'
+CC_MM=1
+
+if test "x$je_cv_cray_prgenv_wrapper" = "xyes" ; then
+  TEST_LD_MODE='-dynamic'
+fi
+
+if test "x${je_cv_cray}" = "xyes" ; then
+  CC_MM=
+fi
+
+AN_MAKEVAR([AR], [AC_PROG_AR])
+AN_PROGRAM([ar], [AC_PROG_AR])
+AC_DEFUN([AC_PROG_AR], [AC_CHECK_TOOL(AR, ar, :)])
+AC_PROG_AR
+
+AN_MAKEVAR([NM], [AC_PROG_NM])
+AN_PROGRAM([nm], [AC_PROG_NM])
+AC_DEFUN([AC_PROG_NM], [AC_CHECK_TOOL(NM, nm, :)])
+AC_PROG_NM
+
+AC_PROG_AWK
+
+dnl ============================================================================
+dnl jemalloc version.
+dnl
+
+AC_ARG_WITH([version],
+  [AS_HELP_STRING([--with-version=<major>.<minor>.<bugfix>-<nrev>-g<gid>],
+   [Version string])],
+  [
+    echo "${with_version}" | grep ['^[0-9]\+\.[0-9]\+\.[0-9]\+-[0-9]\+-g[0-9a-f]\+$'] 2>&1 1>/dev/null
+    if test $? -eq 0 ; then
+      echo "$with_version" > "${objroot}VERSION"
+    else
+      echo "${with_version}" | grep ['^VERSION$'] 2>&1 1>/dev/null
+      if test $? -ne 0 ; then
+        AC_MSG_ERROR([${with_version} does not match <major>.<minor>.<bugfix>-<nrev>-g<gid> or VERSION])
+      fi
+    fi
+  ], [
+    dnl Set VERSION if source directory is inside a git repository.
+    if test "x`test ! \"${srcroot}\" && cd \"${srcroot}\"; git rev-parse --is-inside-work-tree 2>/dev/null`" = "xtrue" ; then
+      dnl Pattern globs aren't powerful enough to match both single- and
+      dnl double-digit version numbers, so iterate over patterns to support up
+      dnl to version 99.99.99 without any accidental matches.
+      for pattern in ['[0-9].[0-9].[0-9]' '[0-9].[0-9].[0-9][0-9]' \
+                     '[0-9].[0-9][0-9].[0-9]' '[0-9].[0-9][0-9].[0-9][0-9]' \
+                     '[0-9][0-9].[0-9].[0-9]' '[0-9][0-9].[0-9].[0-9][0-9]' \
+                     '[0-9][0-9].[0-9][0-9].[0-9]' \
+                     '[0-9][0-9].[0-9][0-9].[0-9][0-9]']; do
+        (test ! "${srcroot}" && cd "${srcroot}"; git describe --long --abbrev=40 --match="${pattern}") > "${objroot}VERSION.tmp" 2>/dev/null
+        if test $? -eq 0 ; then
+          mv "${objroot}VERSION.tmp" "${objroot}VERSION"
+          break
+        fi
+      done
+    fi
+    rm -f "${objroot}VERSION.tmp"
+  ])
+
+if test ! -e "${objroot}VERSION" ; then
+  if test ! -e "${srcroot}VERSION" ; then
+    AC_MSG_RESULT(
+      [Missing VERSION file, and unable to generate it; creating bogus VERSION])
+    echo "0.0.0-0-g000000missing_version_try_git_fetch_tags" > "${objroot}VERSION"
+  else
+    cp ${srcroot}VERSION ${objroot}VERSION
+  fi
+fi
+jemalloc_version=`cat "${objroot}VERSION"`
+jemalloc_version_major=`echo ${jemalloc_version} | tr ".g-" " " | awk '{print [$]1}'`
+jemalloc_version_minor=`echo ${jemalloc_version} | tr ".g-" " " | awk '{print [$]2}'`
+jemalloc_version_bugfix=`echo ${jemalloc_version} | tr ".g-" " " | awk '{print [$]3}'`
+jemalloc_version_nrev=`echo ${jemalloc_version} | tr ".g-" " " | awk '{print [$]4}'`
+jemalloc_version_gid=`echo ${jemalloc_version} | tr ".g-" " " | awk '{print [$]5}'`
+AC_SUBST([jemalloc_version])
+AC_SUBST([jemalloc_version_major])
+AC_SUBST([jemalloc_version_minor])
+AC_SUBST([jemalloc_version_bugfix])
+AC_SUBST([jemalloc_version_nrev])
+AC_SUBST([jemalloc_version_gid])
+
+dnl Platform-specific settings.  abi and RPATH can probably be determined
+dnl programmatically, but doing so is error-prone, which makes it generally
+dnl not worth the trouble.
+dnl
+dnl Define cpp macros in CPPFLAGS, rather than doing AC_DEFINE(macro), since the
+dnl definitions need to be seen before any headers are included, which is a pain
+dnl to make happen otherwise.
+default_retain="0"
+zero_realloc_default_free="0"
+maps_coalesce="1"
+DUMP_SYMS="${NM} -a"
+SYM_PREFIX=""
+case "${host}" in
+  *-*-darwin* | *-*-ios*)
+	abi="macho"
+	RPATH=""
+	LD_PRELOAD_VAR="DYLD_INSERT_LIBRARIES"
+	so="dylib"
+	importlib="${so}"
+	force_tls="0"
+	DSO_LDFLAGS='-shared -Wl,-install_name,$(LIBDIR)/$(@F)'
+	SOREV="${rev}.${so}"
+	sbrk_deprecated="1"
+	SYM_PREFIX="_"
+	;;
+  *-*-freebsd*)
+	JE_APPEND_VS(CPPFLAGS, -D_BSD_SOURCE)
+	abi="elf"
+	AC_DEFINE([JEMALLOC_SYSCTL_VM_OVERCOMMIT], [ ], [ ])
+	force_lazy_lock="1"
+	;;
+  *-*-dragonfly*)
+	abi="elf"
+	;;
+  *-*-openbsd*)
+	abi="elf"
+	force_tls="0"
+	;;
+  *-*-bitrig*)
+	abi="elf"
+	;;
+  *-*-linux-android*)
+	dnl syscall(2) and secure_getenv(3) are exposed by _GNU_SOURCE.
+	JE_APPEND_VS(CPPFLAGS, -D_GNU_SOURCE)
+	abi="elf"
+	glibc="0"
+	AC_DEFINE([JEMALLOC_PURGE_MADVISE_DONTNEED_ZEROS], [ ], [ ])
+	AC_DEFINE([JEMALLOC_HAS_ALLOCA_H], [ ], [ ])
+	AC_DEFINE([JEMALLOC_PROC_SYS_VM_OVERCOMMIT_MEMORY], [ ], [ ])
+	AC_DEFINE([JEMALLOC_THREADED_INIT], [ ], [ ])
+	AC_DEFINE([JEMALLOC_C11_ATOMICS], [ ], [ ])
+	force_tls="0"
+	if test "${LG_SIZEOF_PTR}" = "3"; then
+	  default_retain="1"
+	fi
+	zero_realloc_default_free="1"
+	;;
+  *-*-linux*)
+	dnl syscall(2) and secure_getenv(3) are exposed by _GNU_SOURCE.
+	JE_APPEND_VS(CPPFLAGS, -D_GNU_SOURCE)
+	abi="elf"
+	glibc="1"
+	AC_DEFINE([JEMALLOC_PURGE_MADVISE_DONTNEED_ZEROS], [ ], [ ])
+	AC_DEFINE([JEMALLOC_HAS_ALLOCA_H], [ ], [ ])
+	AC_DEFINE([JEMALLOC_PROC_SYS_VM_OVERCOMMIT_MEMORY], [ ], [ ])
+	AC_DEFINE([JEMALLOC_THREADED_INIT], [ ], [ ])
+	AC_DEFINE([JEMALLOC_USE_CXX_THROW], [ ], [ ])
+	if test "${LG_SIZEOF_PTR}" = "3"; then
+	  default_retain="1"
+	fi
+	zero_realloc_default_free="1"
+	;;
+  *-*-kfreebsd*)
+	dnl syscall(2) and secure_getenv(3) are exposed by _GNU_SOURCE.
+	JE_APPEND_VS(CPPFLAGS, -D_GNU_SOURCE)
+	abi="elf"
+	AC_DEFINE([JEMALLOC_HAS_ALLOCA_H], [ ], [ ])
+	AC_DEFINE([JEMALLOC_SYSCTL_VM_OVERCOMMIT], [ ], [ ])
+	AC_DEFINE([JEMALLOC_THREADED_INIT], [ ], [ ])
+	AC_DEFINE([JEMALLOC_USE_CXX_THROW], [ ], [ ])
+	;;
+  *-*-netbsd*)
+	AC_MSG_CHECKING([ABI])
+        AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
+[[#ifdef __ELF__
+/* ELF */
+#else
+#error aout
+#endif
+]])],
+                          [abi="elf"],
+                          [abi="aout"])
+	AC_MSG_RESULT([$abi])
+	;;
+  *-*-solaris2*)
+	abi="elf"
+	RPATH='-Wl,-R,$(1)'
+	dnl Solaris needs this for sigwait().
+	JE_APPEND_VS(CPPFLAGS, -D_POSIX_PTHREAD_SEMANTICS)
+	JE_APPEND_VS(LIBS, -lposix4 -lsocket -lnsl)
+	;;
+  *-ibm-aix*)
+	if test "${LG_SIZEOF_PTR}" = "3"; then
+	  dnl 64bit AIX
+	  LD_PRELOAD_VAR="LDR_PRELOAD64"
+	else
+	  dnl 32bit AIX
+	  LD_PRELOAD_VAR="LDR_PRELOAD"
+	fi
+	abi="xcoff"
+	;;
+  *-*-mingw* | *-*-cygwin*)
+	abi="pecoff"
+	force_tls="0"
+	maps_coalesce="0"
+	RPATH=""
+	so="dll"
+	if test "x$je_cv_msvc" = "xyes" ; then
+	  importlib="lib"
+	  DSO_LDFLAGS="-LD"
+	  EXTRA_LDFLAGS="-link -DEBUG"
+	  CTARGET='-Fo$@'
+	  LDTARGET='-Fe$@'
+	  AR='lib'
+	  ARFLAGS='-nologo -out:'
+	  AROUT='$@'
+	  CC_MM=
+        else
+	  importlib="${so}"
+	  DSO_LDFLAGS="-shared"
+	  link_whole_archive="1"
+	fi
+	case "${host}" in
+	  *-*-cygwin*)
+	    DUMP_SYMS="dumpbin /SYMBOLS"
+	    ;;
+	  *)
+	    ;;
+	esac
+	a="lib"
+	libprefix=""
+	SOREV="${so}"
+	PIC_CFLAGS=""
+	if test "${LG_SIZEOF_PTR}" = "3"; then
+	  default_retain="1"
+	fi
+	zero_realloc_default_free="1"
+	;;
+  *-*-nto-qnx)
+	abi="elf"
+  force_tls="0"
+  AC_DEFINE([JEMALLOC_HAS_ALLOCA_H], [ ], [ ])
+	;;
+  *)
+	AC_MSG_RESULT([Unsupported operating system: ${host}])
+	abi="elf"
+	;;
+esac
+
+JEMALLOC_USABLE_SIZE_CONST=const
+AC_CHECK_HEADERS([malloc.h], [
+  AC_MSG_CHECKING([whether malloc_usable_size definition can use const argument])
+  AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
+    [#include <malloc.h>
+     #include <stddef.h>
+    size_t malloc_usable_size(const void *ptr);
+    ],
+    [])],[
+                AC_MSG_RESULT([yes])
+         ],[
+                JEMALLOC_USABLE_SIZE_CONST=
+                AC_MSG_RESULT([no])
+         ])
+])
+AC_DEFINE_UNQUOTED([JEMALLOC_USABLE_SIZE_CONST], [$JEMALLOC_USABLE_SIZE_CONST], [ ])
+AC_SUBST([abi])
+AC_SUBST([RPATH])
+AC_SUBST([LD_PRELOAD_VAR])
+AC_SUBST([so])
+AC_SUBST([importlib])
+AC_SUBST([o])
+AC_SUBST([a])
+AC_SUBST([exe])
+AC_SUBST([libprefix])
+AC_SUBST([link_whole_archive])
+AC_SUBST([DSO_LDFLAGS])
+AC_SUBST([EXTRA_LDFLAGS])
+AC_SUBST([SOREV])
+AC_SUBST([PIC_CFLAGS])
+AC_SUBST([CTARGET])
+AC_SUBST([LDTARGET])
+AC_SUBST([TEST_LD_MODE])
+AC_SUBST([MKLIB])
+AC_SUBST([ARFLAGS])
+AC_SUBST([AROUT])
+AC_SUBST([DUMP_SYMS])
+AC_SUBST([CC_MM])
+
+dnl Determine whether libm must be linked to use e.g. log(3).
+AC_SEARCH_LIBS([log], [m], , [AC_MSG_ERROR([Missing math functions])])
+if test "x$ac_cv_search_log" != "xnone required" ; then
+  LM="$ac_cv_search_log"
+else
+  LM=
+fi
+AC_SUBST(LM)
+
+JE_COMPILABLE([__attribute__ syntax],
+              [static __attribute__((unused)) void foo(void){}],
+              [],
+              [je_cv_attribute])
+if test "x${je_cv_attribute}" = "xyes" ; then
+  AC_DEFINE([JEMALLOC_HAVE_ATTR], [ ], [ ])
+  if test "x${GCC}" = "xyes" -a "x${abi}" = "xelf"; then
+    JE_CFLAGS_ADD([-fvisibility=hidden])
+    JE_CXXFLAGS_ADD([-fvisibility=hidden])
+  fi
+fi
+dnl Check for tls_model attribute support (clang 3.0 still lacks support).
+JE_CFLAGS_SAVE()
+JE_CFLAGS_ADD([-Werror])
+JE_CFLAGS_ADD([-herror_on_warning])
+JE_COMPILABLE([tls_model attribute], [],
+              [static __thread int
+               __attribute__((tls_model("initial-exec"), unused)) foo;
+               foo = 0;],
+              [je_cv_tls_model])
+JE_CFLAGS_RESTORE()
+dnl (Setting of JEMALLOC_TLS_MODEL is done later, after we've checked for
+dnl --disable-initial-exec-tls)
+
+dnl Check for alloc_size attribute support.
+JE_CFLAGS_SAVE()
+JE_CFLAGS_ADD([-Werror])
+JE_CFLAGS_ADD([-herror_on_warning])
+JE_COMPILABLE([alloc_size attribute], [#include <stdlib.h>],
+              [void *foo(size_t size) __attribute__((alloc_size(1)));],
+              [je_cv_alloc_size])
+JE_CFLAGS_RESTORE()
+if test "x${je_cv_alloc_size}" = "xyes" ; then
+  AC_DEFINE([JEMALLOC_HAVE_ATTR_ALLOC_SIZE], [ ], [ ])
+fi
+dnl Check for format(gnu_printf, ...) attribute support.
+JE_CFLAGS_SAVE()
+JE_CFLAGS_ADD([-Werror])
+JE_CFLAGS_ADD([-herror_on_warning])
+JE_COMPILABLE([format(gnu_printf, ...) attribute], [#include <stdlib.h>],
+              [void *foo(const char *format, ...) __attribute__((format(gnu_printf, 1, 2)));],
+              [je_cv_format_gnu_printf])
+JE_CFLAGS_RESTORE()
+if test "x${je_cv_format_gnu_printf}" = "xyes" ; then
+  AC_DEFINE([JEMALLOC_HAVE_ATTR_FORMAT_GNU_PRINTF], [ ], [ ])
+fi
+dnl Check for format(printf, ...) attribute support.
+JE_CFLAGS_SAVE()
+JE_CFLAGS_ADD([-Werror])
+JE_CFLAGS_ADD([-herror_on_warning])
+JE_COMPILABLE([format(printf, ...) attribute], [#include <stdlib.h>],
+              [void *foo(const char *format, ...) __attribute__((format(printf, 1, 2)));],
+              [je_cv_format_printf])
+JE_CFLAGS_RESTORE()
+if test "x${je_cv_format_printf}" = "xyes" ; then
+  AC_DEFINE([JEMALLOC_HAVE_ATTR_FORMAT_PRINTF], [ ], [ ])
+fi
+
+dnl Check for format_arg(...) attribute support.
+JE_CFLAGS_SAVE()
+JE_CFLAGS_ADD([-Werror])
+JE_CFLAGS_ADD([-herror_on_warning])
+JE_COMPILABLE([format(printf, ...) attribute], [#include <stdlib.h>],
+              [const char * __attribute__((__format_arg__(1))) foo(const char *format);],
+              [je_cv_format_arg])
+JE_CFLAGS_RESTORE()
+if test "x${je_cv_format_arg}" = "xyes" ; then
+  AC_DEFINE([JEMALLOC_HAVE_ATTR_FORMAT_ARG], [ ], [ ])
+fi
+
+dnl Check for fallthrough attribute support.
+JE_CFLAGS_SAVE()
+JE_CFLAGS_ADD([-Wimplicit-fallthrough])
+JE_COMPILABLE([fallthrough attribute],
+              [#if !__has_attribute(fallthrough)
+               #error "foo"
+               #endif],
+              [int x = 0;
+               switch (x) {
+               case 0: __attribute__((__fallthrough__));
+               case 1: return 1;
+               }],
+              [je_cv_fallthrough])
+JE_CFLAGS_RESTORE()
+if test "x${je_cv_fallthrough}" = "xyes" ; then
+  AC_DEFINE([JEMALLOC_HAVE_ATTR_FALLTHROUGH], [ ], [ ])
+  JE_CFLAGS_ADD([-Wimplicit-fallthrough])
+  JE_CXXFLAGS_ADD([-Wimplicit-fallthrough])
+fi
+
+dnl Check for cold attribute support.
+JE_CFLAGS_SAVE()
+JE_CFLAGS_ADD([-Werror])
+JE_CFLAGS_ADD([-herror_on_warning])
+JE_COMPILABLE([cold attribute], [],
+              [__attribute__((__cold__)) void foo();],
+              [je_cv_cold])
+JE_CFLAGS_RESTORE()
+if test "x${je_cv_cold}" = "xyes" ; then
+  AC_DEFINE([JEMALLOC_HAVE_ATTR_COLD], [ ], [ ])
+fi
+
+dnl Check for VM_MAKE_TAG for mmap support.
+JE_COMPILABLE([vm_make_tag],
+	      [#include <sys/mman.h>
+	       #include <mach/vm_statistics.h>],
+	      [void *p;
+	       p = mmap(0, 16, PROT_READ, MAP_ANON|MAP_PRIVATE, VM_MAKE_TAG(1), 0);
+	       munmap(p, 16);],
+	      [je_cv_vm_make_tag])
+if test "x${je_cv_vm_make_tag}" = "xyes" ; then
+  AC_DEFINE([JEMALLOC_HAVE_VM_MAKE_TAG], [ ], [ ])
+fi
+
+dnl Support optional additions to rpath.
+AC_ARG_WITH([rpath],
+  [AS_HELP_STRING([--with-rpath=<rpath>], [Colon-separated rpath (ELF systems only)])],
+if test "x$with_rpath" = "xno" ; then
+  RPATH_EXTRA=
+else
+  RPATH_EXTRA="`echo $with_rpath | tr \":\" \" \"`"
+fi,
+  RPATH_EXTRA=
+)
+AC_SUBST([RPATH_EXTRA])
+
+dnl Disable rules that do automatic regeneration of configure output by default.
+AC_ARG_ENABLE([autogen],
+  [AS_HELP_STRING([--enable-autogen], [Automatically regenerate configure output])],
+if test "x$enable_autogen" = "xno" ; then
+  enable_autogen="0"
+else
+  enable_autogen="1"
+fi
+,
+enable_autogen="0"
+)
+AC_SUBST([enable_autogen])
+
+AC_PROG_INSTALL
+AC_PROG_RANLIB
+AC_PATH_PROG([LD], [ld], [false], [$PATH])
+AC_PATH_PROG([AUTOCONF], [autoconf], [false], [$PATH])
+
+dnl Enable documentation
+AC_ARG_ENABLE([doc],
+	      [AS_HELP_STRING([--enable-doc], [Build documentation])],
+if test "x$enable_doc" = "xno" ; then
+  enable_doc="0"
+else
+  enable_doc="1"
+fi
+,
+enable_doc="1"
+)
+AC_SUBST([enable_doc])
+
+dnl Enable shared libs
+AC_ARG_ENABLE([shared],
+  [AS_HELP_STRING([--enable-shared], [Build shared libaries])],
+if test "x$enable_shared" = "xno" ; then
+  enable_shared="0"
+else
+  enable_shared="1"
+fi
+,
+enable_shared="1"
+)
+AC_SUBST([enable_shared])
+
+dnl Enable static libs
+AC_ARG_ENABLE([static],
+  [AS_HELP_STRING([--enable-static], [Build static libaries])],
+if test "x$enable_static" = "xno" ; then
+  enable_static="0"
+else
+  enable_static="1"
+fi
+,
+enable_static="1"
+)
+AC_SUBST([enable_static])
+
+if test "$enable_shared$enable_static" = "00" ; then
+  AC_MSG_ERROR([Please enable one of shared or static builds])
+fi
+
+dnl Perform no name mangling by default.
+AC_ARG_WITH([mangling],
+  [AS_HELP_STRING([--with-mangling=<map>], [Mangle symbols in <map>])],
+  [mangling_map="$with_mangling"], [mangling_map=""])
+
+dnl Do not prefix public APIs by default.
+AC_ARG_WITH([jemalloc_prefix],
+  [AS_HELP_STRING([--with-jemalloc-prefix=<prefix>], [Prefix to prepend to all public APIs])],
+  [JEMALLOC_PREFIX="$with_jemalloc_prefix"],
+  [if test "x$abi" != "xmacho" -a "x$abi" != "xpecoff"; then
+  JEMALLOC_PREFIX=""
+else
+  JEMALLOC_PREFIX="je_"
+fi]
+)
+if test "x$JEMALLOC_PREFIX" = "x" ; then
+  AC_DEFINE([JEMALLOC_IS_MALLOC], [ ], [ ])
+else
+  JEMALLOC_CPREFIX=`echo ${JEMALLOC_PREFIX} | tr "a-z" "A-Z"`
+  AC_DEFINE_UNQUOTED([JEMALLOC_PREFIX], ["$JEMALLOC_PREFIX"], [ ])
+  AC_DEFINE_UNQUOTED([JEMALLOC_CPREFIX], ["$JEMALLOC_CPREFIX"], [ ])
+fi
+AC_SUBST([JEMALLOC_PREFIX])
+AC_SUBST([JEMALLOC_CPREFIX])
+
+AC_ARG_WITH([export],
+  [AS_HELP_STRING([--without-export], [disable exporting jemalloc public APIs])],
+  [if test "x$with_export" = "xno"; then
+  AC_DEFINE([JEMALLOC_EXPORT],[], [ ])
+fi]
+)
+
+public_syms="aligned_alloc calloc dallocx free mallctl mallctlbymib mallctlnametomib malloc malloc_conf malloc_conf_2_conf_harder malloc_message malloc_stats_print malloc_usable_size mallocx smallocx_${jemalloc_version_gid} nallocx posix_memalign rallocx realloc sallocx sdallocx xallocx"
+dnl Check for additional platform-specific public API functions.
+AC_CHECK_FUNC([memalign],
+	      [AC_DEFINE([JEMALLOC_OVERRIDE_MEMALIGN], [ ], [ ])
+	       public_syms="${public_syms} memalign"])
+AC_CHECK_FUNC([valloc],
+	      [AC_DEFINE([JEMALLOC_OVERRIDE_VALLOC], [ ], [ ])
+	       public_syms="${public_syms} valloc"])
+AC_CHECK_FUNC([malloc_size],
+	      [AC_DEFINE([JEMALLOC_HAVE_MALLOC_SIZE], [ ], [ ])
+	       public_syms="${public_syms} malloc_size"])
+
+dnl Check for allocator-related functions that should be wrapped.
+wrap_syms=
+if test "x${JEMALLOC_PREFIX}" = "x" ; then
+  AC_CHECK_FUNC([__libc_calloc],
+		[AC_DEFINE([JEMALLOC_OVERRIDE___LIBC_CALLOC], [ ], [ ])
+		 wrap_syms="${wrap_syms} __libc_calloc"])
+  AC_CHECK_FUNC([__libc_free],
+		[AC_DEFINE([JEMALLOC_OVERRIDE___LIBC_FREE], [ ], [ ])
+		 wrap_syms="${wrap_syms} __libc_free"])
+  AC_CHECK_FUNC([__libc_malloc],
+		[AC_DEFINE([JEMALLOC_OVERRIDE___LIBC_MALLOC], [ ], [ ])
+		 wrap_syms="${wrap_syms} __libc_malloc"])
+  AC_CHECK_FUNC([__libc_memalign],
+		[AC_DEFINE([JEMALLOC_OVERRIDE___LIBC_MEMALIGN], [ ], [ ])
+		 wrap_syms="${wrap_syms} __libc_memalign"])
+  AC_CHECK_FUNC([__libc_realloc],
+		[AC_DEFINE([JEMALLOC_OVERRIDE___LIBC_REALLOC], [ ], [ ])
+		 wrap_syms="${wrap_syms} __libc_realloc"])
+  AC_CHECK_FUNC([__libc_valloc],
+		[AC_DEFINE([JEMALLOC_OVERRIDE___LIBC_VALLOC], [ ], [ ])
+		 wrap_syms="${wrap_syms} __libc_valloc"])
+  AC_CHECK_FUNC([__posix_memalign],
+		[AC_DEFINE([JEMALLOC_OVERRIDE___POSIX_MEMALIGN], [ ], [ ])
+		 wrap_syms="${wrap_syms} __posix_memalign"])
+fi
+
+case "${host}" in
+  *-*-mingw* | *-*-cygwin*)
+    wrap_syms="${wrap_syms} tls_callback"
+    ;;
+  *)
+    ;;
+esac
+
+dnl Mangle library-private APIs.
+AC_ARG_WITH([private_namespace],
+  [AS_HELP_STRING([--with-private-namespace=<prefix>], [Prefix to prepend to all library-private APIs])],
+  [JEMALLOC_PRIVATE_NAMESPACE="${with_private_namespace}je_"],
+  [JEMALLOC_PRIVATE_NAMESPACE="je_"]
+)
+AC_DEFINE_UNQUOTED([JEMALLOC_PRIVATE_NAMESPACE], [$JEMALLOC_PRIVATE_NAMESPACE], [ ])
+private_namespace="$JEMALLOC_PRIVATE_NAMESPACE"
+AC_SUBST([private_namespace])
+
+dnl Do not add suffix to installed files by default.
+AC_ARG_WITH([install_suffix],
+  [AS_HELP_STRING([--with-install-suffix=<suffix>], [Suffix to append to all installed files])],
+  [case "$with_install_suffix" in
+   *\ * ) AC_MSG_ERROR([Install suffix should not contain spaces]) ;;
+   * ) INSTALL_SUFFIX="$with_install_suffix" ;;
+esac],
+  [INSTALL_SUFFIX=]
+)
+install_suffix="$INSTALL_SUFFIX"
+AC_SUBST([install_suffix])
+
+dnl Specify default malloc_conf.
+AC_ARG_WITH([malloc_conf],
+  [AS_HELP_STRING([--with-malloc-conf=<malloc_conf>], [config.malloc_conf options string])],
+  [JEMALLOC_CONFIG_MALLOC_CONF="$with_malloc_conf"],
+  [JEMALLOC_CONFIG_MALLOC_CONF=""]
+)
+config_malloc_conf="$JEMALLOC_CONFIG_MALLOC_CONF"
+AC_DEFINE_UNQUOTED([JEMALLOC_CONFIG_MALLOC_CONF], ["$config_malloc_conf"], [ ])
+
+dnl Substitute @je_@ in jemalloc_protos.h.in, primarily to make generation of
+dnl jemalloc_protos_jet.h easy.
+je_="je_"
+AC_SUBST([je_])
+
+cfgoutputs_in="Makefile.in"
+cfgoutputs_in="${cfgoutputs_in} jemalloc.pc.in"
+cfgoutputs_in="${cfgoutputs_in} doc/html.xsl.in"
+cfgoutputs_in="${cfgoutputs_in} doc/manpages.xsl.in"
+cfgoutputs_in="${cfgoutputs_in} doc/jemalloc.xml.in"
+cfgoutputs_in="${cfgoutputs_in} include/jemalloc/jemalloc_macros.h.in"
+cfgoutputs_in="${cfgoutputs_in} include/jemalloc/jemalloc_protos.h.in"
+cfgoutputs_in="${cfgoutputs_in} include/jemalloc/jemalloc_typedefs.h.in"
+cfgoutputs_in="${cfgoutputs_in} include/jemalloc/internal/jemalloc_preamble.h.in"
+cfgoutputs_in="${cfgoutputs_in} test/test.sh.in"
+cfgoutputs_in="${cfgoutputs_in} test/include/test/jemalloc_test.h.in"
+
+cfgoutputs_out="Makefile"
+cfgoutputs_out="${cfgoutputs_out} jemalloc.pc"
+cfgoutputs_out="${cfgoutputs_out} doc/html.xsl"
+cfgoutputs_out="${cfgoutputs_out} doc/manpages.xsl"
+cfgoutputs_out="${cfgoutputs_out} doc/jemalloc.xml"
+cfgoutputs_out="${cfgoutputs_out} include/jemalloc/jemalloc_macros.h"
+cfgoutputs_out="${cfgoutputs_out} include/jemalloc/jemalloc_protos.h"
+cfgoutputs_out="${cfgoutputs_out} include/jemalloc/jemalloc_typedefs.h"
+cfgoutputs_out="${cfgoutputs_out} include/jemalloc/internal/jemalloc_preamble.h"
+cfgoutputs_out="${cfgoutputs_out} test/test.sh"
+cfgoutputs_out="${cfgoutputs_out} test/include/test/jemalloc_test.h"
+
+cfgoutputs_tup="Makefile"
+cfgoutputs_tup="${cfgoutputs_tup} jemalloc.pc:jemalloc.pc.in"
+cfgoutputs_tup="${cfgoutputs_tup} doc/html.xsl:doc/html.xsl.in"
+cfgoutputs_tup="${cfgoutputs_tup} doc/manpages.xsl:doc/manpages.xsl.in"
+cfgoutputs_tup="${cfgoutputs_tup} doc/jemalloc.xml:doc/jemalloc.xml.in"
+cfgoutputs_tup="${cfgoutputs_tup} include/jemalloc/jemalloc_macros.h:include/jemalloc/jemalloc_macros.h.in"
+cfgoutputs_tup="${cfgoutputs_tup} include/jemalloc/jemalloc_protos.h:include/jemalloc/jemalloc_protos.h.in"
+cfgoutputs_tup="${cfgoutputs_tup} include/jemalloc/jemalloc_typedefs.h:include/jemalloc/jemalloc_typedefs.h.in"
+cfgoutputs_tup="${cfgoutputs_tup} include/jemalloc/internal/jemalloc_preamble.h"
+cfgoutputs_tup="${cfgoutputs_tup} test/test.sh:test/test.sh.in"
+cfgoutputs_tup="${cfgoutputs_tup} test/include/test/jemalloc_test.h:test/include/test/jemalloc_test.h.in"
+
+cfghdrs_in="include/jemalloc/jemalloc_defs.h.in"
+cfghdrs_in="${cfghdrs_in} include/jemalloc/internal/jemalloc_internal_defs.h.in"
+cfghdrs_in="${cfghdrs_in} include/jemalloc/internal/private_symbols.sh"
+cfghdrs_in="${cfghdrs_in} include/jemalloc/internal/private_namespace.sh"
+cfghdrs_in="${cfghdrs_in} include/jemalloc/internal/public_namespace.sh"
+cfghdrs_in="${cfghdrs_in} include/jemalloc/internal/public_unnamespace.sh"
+cfghdrs_in="${cfghdrs_in} include/jemalloc/jemalloc_rename.sh"
+cfghdrs_in="${cfghdrs_in} include/jemalloc/jemalloc_mangle.sh"
+cfghdrs_in="${cfghdrs_in} include/jemalloc/jemalloc.sh"
+cfghdrs_in="${cfghdrs_in} test/include/test/jemalloc_test_defs.h.in"
+
+cfghdrs_out="include/jemalloc/jemalloc_defs.h"
+cfghdrs_out="${cfghdrs_out} include/jemalloc/jemalloc${install_suffix}.h"
+cfghdrs_out="${cfghdrs_out} include/jemalloc/internal/private_symbols.awk"
+cfghdrs_out="${cfghdrs_out} include/jemalloc/internal/private_symbols_jet.awk"
+cfghdrs_out="${cfghdrs_out} include/jemalloc/internal/public_symbols.txt"
+cfghdrs_out="${cfghdrs_out} include/jemalloc/internal/public_namespace.h"
+cfghdrs_out="${cfghdrs_out} include/jemalloc/internal/public_unnamespace.h"
+cfghdrs_out="${cfghdrs_out} include/jemalloc/jemalloc_protos_jet.h"
+cfghdrs_out="${cfghdrs_out} include/jemalloc/jemalloc_rename.h"
+cfghdrs_out="${cfghdrs_out} include/jemalloc/jemalloc_mangle.h"
+cfghdrs_out="${cfghdrs_out} include/jemalloc/jemalloc_mangle_jet.h"
+cfghdrs_out="${cfghdrs_out} include/jemalloc/internal/jemalloc_internal_defs.h"
+cfghdrs_out="${cfghdrs_out} test/include/test/jemalloc_test_defs.h"
+
+cfghdrs_tup="include/jemalloc/jemalloc_defs.h:include/jemalloc/jemalloc_defs.h.in"
+cfghdrs_tup="${cfghdrs_tup} include/jemalloc/internal/jemalloc_internal_defs.h:include/jemalloc/internal/jemalloc_internal_defs.h.in"
+cfghdrs_tup="${cfghdrs_tup} test/include/test/jemalloc_test_defs.h:test/include/test/jemalloc_test_defs.h.in"
+
+dnl ============================================================================
+dnl jemalloc build options.
+dnl
+
+dnl Do not compile with debugging by default.
+AC_ARG_ENABLE([debug],
+  [AS_HELP_STRING([--enable-debug],
+                  [Build debugging code])],
+[if test "x$enable_debug" = "xno" ; then
+  enable_debug="0"
+else
+  enable_debug="1"
+fi
+],
+[enable_debug="0"]
+)
+if test "x$enable_debug" = "x1" ; then
+  AC_DEFINE([JEMALLOC_DEBUG], [ ], [ ])
+fi
+AC_SUBST([enable_debug])
+
+dnl Only optimize if not debugging.
+if test "x$enable_debug" = "x0" ; then
+  if test "x$GCC" = "xyes" ; then
+    JE_CFLAGS_ADD([-O3])
+    JE_CXXFLAGS_ADD([-O3])
+    JE_CFLAGS_ADD([-funroll-loops])
+  elif test "x$je_cv_msvc" = "xyes" ; then
+    JE_CFLAGS_ADD([-O2])
+    JE_CXXFLAGS_ADD([-O2])
+  else
+    JE_CFLAGS_ADD([-O])
+    JE_CXXFLAGS_ADD([-O])
+  fi
+fi
+
+dnl Enable statistics calculation by default.
+AC_ARG_ENABLE([stats],
+  [AS_HELP_STRING([--disable-stats],
+                  [Disable statistics calculation/reporting])],
+[if test "x$enable_stats" = "xno" ; then
+  enable_stats="0"
+else
+  enable_stats="1"
+fi
+],
+[enable_stats="1"]
+)
+if test "x$enable_stats" = "x1" ; then
+  AC_DEFINE([JEMALLOC_STATS], [ ], [ ])
+fi
+AC_SUBST([enable_stats])
+
+dnl Do not enable smallocx by default.
+AC_ARG_ENABLE([experimental_smallocx],
+  [AS_HELP_STRING([--enable-experimental-smallocx], [Enable experimental smallocx API])],
+[if test "x$enable_experimental_smallocx" = "xno" ; then
+enable_experimental_smallocx="0"
+else
+enable_experimental_smallocx="1"
+fi
+],
+[enable_experimental_smallocx="0"]
+)
+if test "x$enable_experimental_smallocx" = "x1" ; then
+  AC_DEFINE([JEMALLOC_EXPERIMENTAL_SMALLOCX_API], [ ], [ ])
+fi
+AC_SUBST([enable_experimental_smallocx])
+
+dnl Do not enable profiling by default.
+AC_ARG_ENABLE([prof],
+  [AS_HELP_STRING([--enable-prof], [Enable allocation profiling])],
+[if test "x$enable_prof" = "xno" ; then
+  enable_prof="0"
+else
+  enable_prof="1"
+fi
+],
+[enable_prof="0"]
+)
+if test "x$enable_prof" = "x1" ; then
+  backtrace_method=""
+else
+  backtrace_method="N/A"
+fi
+
+AC_ARG_ENABLE([prof-libunwind],
+  [AS_HELP_STRING([--enable-prof-libunwind], [Use libunwind for backtracing])],
+[if test "x$enable_prof_libunwind" = "xno" ; then
+  enable_prof_libunwind="0"
+else
+  enable_prof_libunwind="1"
+  if test "x$enable_prof" = "x0" ; then
+    AC_MSG_ERROR([--enable-prof-libunwind should only be used with --enable-prof])
+  fi
+fi
+],
+[enable_prof_libunwind="0"]
+)
+AC_ARG_WITH([static_libunwind],
+  [AS_HELP_STRING([--with-static-libunwind=<libunwind.a>],
+  [Path to static libunwind library; use rather than dynamically linking])],
+if test "x$with_static_libunwind" = "xno" ; then
+  LUNWIND="-lunwind"
+else
+  if test ! -f "$with_static_libunwind" ; then
+    AC_MSG_ERROR([Static libunwind not found: $with_static_libunwind])
+  fi
+  LUNWIND="$with_static_libunwind"
+fi,
+  LUNWIND="-lunwind"
+)
+if test "x$backtrace_method" = "x" -a "x$enable_prof_libunwind" = "x1" ; then
+  AC_CHECK_HEADERS([libunwind.h], , [enable_prof_libunwind="0"])
+  if test "x$LUNWIND" = "x-lunwind" ; then
+    AC_CHECK_LIB([unwind], [unw_backtrace], [JE_APPEND_VS(LIBS, $LUNWIND)],
+                 [enable_prof_libunwind="0"])
+  else
+    JE_APPEND_VS(LIBS, $LUNWIND)
+  fi
+  if test "x${enable_prof_libunwind}" = "x1" ; then
+    backtrace_method="libunwind"
+    AC_DEFINE([JEMALLOC_PROF_LIBUNWIND], [ ], [ ])
+  fi
+fi
+
+AC_ARG_ENABLE([prof-libgcc],
+  [AS_HELP_STRING([--disable-prof-libgcc],
+  [Do not use libgcc for backtracing])],
+[if test "x$enable_prof_libgcc" = "xno" ; then
+  enable_prof_libgcc="0"
+else
+  enable_prof_libgcc="1"
+fi
+],
+[enable_prof_libgcc="1"]
+)
+if test "x$backtrace_method" = "x" -a "x$enable_prof_libgcc" = "x1" \
+     -a "x$GCC" = "xyes" ; then
+  AC_CHECK_HEADERS([unwind.h], , [enable_prof_libgcc="0"])
+  if test "x${enable_prof_libgcc}" = "x1" ; then
+    AC_CHECK_LIB([gcc], [_Unwind_Backtrace], [JE_APPEND_VS(LIBS, -lgcc)], [enable_prof_libgcc="0"])
+  fi
+  if test "x${enable_prof_libgcc}" = "x1" ; then
+    backtrace_method="libgcc"
+    AC_DEFINE([JEMALLOC_PROF_LIBGCC], [ ], [ ])
+  fi
+else
+  enable_prof_libgcc="0"
+fi
+
+AC_ARG_ENABLE([prof-gcc],
+  [AS_HELP_STRING([--disable-prof-gcc],
+  [Do not use gcc intrinsics for backtracing])],
+[if test "x$enable_prof_gcc" = "xno" ; then
+  enable_prof_gcc="0"
+else
+  enable_prof_gcc="1"
+fi
+],
+[enable_prof_gcc="1"]
+)
+if test "x$backtrace_method" = "x" -a "x$enable_prof_gcc" = "x1" \
+     -a "x$GCC" = "xyes" ; then
+  JE_CFLAGS_ADD([-fno-omit-frame-pointer])
+  backtrace_method="gcc intrinsics"
+  AC_DEFINE([JEMALLOC_PROF_GCC], [ ], [ ])
+else
+  enable_prof_gcc="0"
+fi
+
+if test "x$backtrace_method" = "x" ; then
+  backtrace_method="none (disabling profiling)"
+  enable_prof="0"
+fi
+AC_MSG_CHECKING([configured backtracing method])
+AC_MSG_RESULT([$backtrace_method])
+if test "x$enable_prof" = "x1" ; then
+  dnl Heap profiling uses the log(3) function.
+  JE_APPEND_VS(LIBS, $LM)
+
+  AC_DEFINE([JEMALLOC_PROF], [ ], [ ])
+fi
+AC_SUBST([enable_prof])
+
+dnl Indicate whether adjacent virtual memory mappings automatically coalesce
+dnl (and fragment on demand).
+if test "x${maps_coalesce}" = "x1" ; then
+  AC_DEFINE([JEMALLOC_MAPS_COALESCE], [ ], [ ])
+fi
+
+dnl Indicate whether to retain memory (rather than using munmap()) by default.
+if test "x$default_retain" = "x1" ; then
+  AC_DEFINE([JEMALLOC_RETAIN], [ ], [ ])
+fi
+
+dnl Indicate whether realloc(ptr, 0) defaults to the "alloc" behavior.
+if test "x$zero_realloc_default_free" = "x1" ; then
+  AC_DEFINE([JEMALLOC_ZERO_REALLOC_DEFAULT_FREE], [ ], [ ])
+fi
+
+dnl Enable allocation from DSS if supported by the OS.
+have_dss="1"
+dnl Check whether the BSD/SUSv1 sbrk() exists.  If not, disable DSS support.
+AC_CHECK_FUNC([sbrk], [have_sbrk="1"], [have_sbrk="0"])
+if test "x$have_sbrk" = "x1" ; then
+  if test "x$sbrk_deprecated" = "x1" ; then
+    AC_MSG_RESULT([Disabling dss allocation because sbrk is deprecated])
+    have_dss="0"
+  fi
+else
+  have_dss="0"
+fi
+
+if test "x$have_dss" = "x1" ; then
+  AC_DEFINE([JEMALLOC_DSS], [ ], [ ])
+fi
+
+dnl Support the junk/zero filling option by default.
+AC_ARG_ENABLE([fill],
+  [AS_HELP_STRING([--disable-fill], [Disable support for junk/zero filling])],
+[if test "x$enable_fill" = "xno" ; then
+  enable_fill="0"
+else
+  enable_fill="1"
+fi
+],
+[enable_fill="1"]
+)
+if test "x$enable_fill" = "x1" ; then
+  AC_DEFINE([JEMALLOC_FILL], [ ], [ ])
+fi
+AC_SUBST([enable_fill])
+
+dnl Disable utrace(2)-based tracing by default.
+AC_ARG_ENABLE([utrace],
+  [AS_HELP_STRING([--enable-utrace], [Enable utrace(2)-based tracing])],
+[if test "x$enable_utrace" = "xno" ; then
+  enable_utrace="0"
+else
+  enable_utrace="1"
+fi
+],
+[enable_utrace="0"]
+)
+JE_COMPILABLE([utrace(2)], [
+#include <sys/types.h>
+#include <sys/param.h>
+#include <sys/time.h>
+#include <sys/uio.h>
+#include <sys/ktrace.h>
+], [
+	utrace((void *)0, 0);
+], [je_cv_utrace])
+if test "x${je_cv_utrace}" = "xno" ; then
+  JE_COMPILABLE([utrace(2) with label], [
+  #include <sys/types.h>
+  #include <sys/param.h>
+  #include <sys/time.h>
+  #include <sys/uio.h>
+  #include <sys/ktrace.h>
+  ], [
+	  utrace((void *)0, (void *)0, 0);
+  ], [je_cv_utrace_label])
+  if test "x${je_cv_utrace_label}" = "xno"; then
+    enable_utrace="0"
+  fi
+  if test "x$enable_utrace" = "x1" ; then
+    AC_DEFINE([JEMALLOC_UTRACE_LABEL], [ ], [ ])
+  fi
+else
+  if test "x$enable_utrace" = "x1" ; then
+    AC_DEFINE([JEMALLOC_UTRACE], [ ], [ ])
+  fi
+fi
+AC_SUBST([enable_utrace])
+
+dnl Do not support the xmalloc option by default.
+AC_ARG_ENABLE([xmalloc],
+  [AS_HELP_STRING([--enable-xmalloc], [Support xmalloc option])],
+[if test "x$enable_xmalloc" = "xno" ; then
+  enable_xmalloc="0"
+else
+  enable_xmalloc="1"
+fi
+],
+[enable_xmalloc="0"]
+)
+if test "x$enable_xmalloc" = "x1" ; then
+  AC_DEFINE([JEMALLOC_XMALLOC], [ ], [ ])
+fi
+AC_SUBST([enable_xmalloc])
+
+dnl Support cache-oblivious allocation alignment by default.
+AC_ARG_ENABLE([cache-oblivious],
+  [AS_HELP_STRING([--disable-cache-oblivious],
+                  [Disable support for cache-oblivious allocation alignment])],
+[if test "x$enable_cache_oblivious" = "xno" ; then
+  enable_cache_oblivious="0"
+else
+  enable_cache_oblivious="1"
+fi
+],
+[enable_cache_oblivious="1"]
+)
+if test "x$enable_cache_oblivious" = "x1" ; then
+  AC_DEFINE([JEMALLOC_CACHE_OBLIVIOUS], [ ], [ ])
+fi
+AC_SUBST([enable_cache_oblivious])
+
+dnl Do not log by default.
+AC_ARG_ENABLE([log],
+  [AS_HELP_STRING([--enable-log], [Support debug logging])],
+[if test "x$enable_log" = "xno" ; then
+  enable_log="0"
+else
+  enable_log="1"
+fi
+],
+[enable_log="0"]
+)
+if test "x$enable_log" = "x1" ; then
+  AC_DEFINE([JEMALLOC_LOG], [ ], [ ])
+fi
+AC_SUBST([enable_log])
+
+dnl Do not use readlinkat by default
+AC_ARG_ENABLE([readlinkat],
+  [AS_HELP_STRING([--enable-readlinkat], [Use readlinkat over readlink])],
+[if test "x$enable_readlinkat" = "xno" ; then
+  enable_readlinkat="0"
+else
+  enable_readlinkat="1"
+fi
+],
+[enable_readlinkat="0"]
+)
+if test "x$enable_readlinkat" = "x1" ; then
+  AC_DEFINE([JEMALLOC_READLINKAT], [ ], [ ])
+fi
+AC_SUBST([enable_readlinkat])
+
+dnl Avoid extra safety checks by default
+AC_ARG_ENABLE([opt-safety-checks],
+  [AS_HELP_STRING([--enable-opt-safety-checks],
+  [Perform certain low-overhead checks, even in opt mode])],
+[if test "x$enable_opt_safety_checks" = "xno" ; then
+  enable_opt_safety_checks="0"
+else
+  enable_opt_safety_checks="1"
+fi
+],
+[enable_opt_safety_checks="0"]
+)
+if test "x$enable_opt_safety_checks" = "x1" ; then
+  AC_DEFINE([JEMALLOC_OPT_SAFETY_CHECKS], [ ], [ ])
+fi
+AC_SUBST([enable_opt_safety_checks])
+
+dnl Look for sized-deallocation bugs while otherwise being in opt mode.
+AC_ARG_ENABLE([opt-size-checks],
+  [AS_HELP_STRING([--enable-opt-size-checks],
+  [Perform sized-deallocation argument checks, even in opt mode])],
+[if test "x$enable_opt_size_checks" = "xno" ; then
+  enable_opt_size_checks="0"
+else
+  enable_opt_size_checks="1"
+fi
+],
+[enable_opt_size_checks="0"]
+)
+if test "x$enable_opt_size_checks" = "x1" ; then
+  AC_DEFINE([JEMALLOC_OPT_SIZE_CHECKS], [ ], [ ])
+fi
+AC_SUBST([enable_opt_size_checks])
+
+dnl Do not check for use-after-free by default.
+AC_ARG_ENABLE([uaf-detection],
+  [AS_HELP_STRING([--enable-uaf-detection],
+  [Allow sampled junk-filling on deallocation to detect use-after-free])],
+[if test "x$enable_uaf_detection" = "xno" ; then
+  enable_uaf_detection="0"
+else
+  enable_uaf_detection="1"
+fi
+],
+[enable_uaf_detection="0"]
+)
+if test "x$enable_uaf_detection" = "x1" ; then
+  AC_DEFINE([JEMALLOC_UAF_DETECTION], [ ])
+fi
+AC_SUBST([enable_uaf_detection])
+
+JE_COMPILABLE([a program using __builtin_unreachable], [
+void foo (void) {
+  __builtin_unreachable();
+}
+], [
+	{
+		foo();
+	}
+], [je_cv_gcc_builtin_unreachable])
+if test "x${je_cv_gcc_builtin_unreachable}" = "xyes" ; then
+  AC_DEFINE([JEMALLOC_INTERNAL_UNREACHABLE], [__builtin_unreachable], [ ])
+else
+  AC_DEFINE([JEMALLOC_INTERNAL_UNREACHABLE], [abort], [ ])
+fi
+
+dnl ============================================================================
+dnl Check for  __builtin_ffsl(), then ffsl(3), and fail if neither are found.
+dnl One of those two functions should (theoretically) exist on all platforms
+dnl that jemalloc currently has a chance of functioning on without modification.
+dnl We additionally assume ffs[ll]() or __builtin_ffs[ll]() are defined if
+dnl ffsl() or __builtin_ffsl() are defined, respectively.
+JE_COMPILABLE([a program using __builtin_ffsl], [
+#include <stdio.h>
+#include <strings.h>
+#include <string.h>
+], [
+	{
+		int rv = __builtin_ffsl(0x08);
+		printf("%d\n", rv);
+	}
+], [je_cv_gcc_builtin_ffsl])
+if test "x${je_cv_gcc_builtin_ffsl}" = "xyes" ; then
+  AC_DEFINE([JEMALLOC_INTERNAL_FFSLL], [__builtin_ffsll], [ ])
+  AC_DEFINE([JEMALLOC_INTERNAL_FFSL], [__builtin_ffsl], [ ])
+  AC_DEFINE([JEMALLOC_INTERNAL_FFS], [__builtin_ffs], [ ])
+else
+  JE_COMPILABLE([a program using ffsl], [
+  #include <stdio.h>
+  #include <strings.h>
+  #include <string.h>
+  ], [
+	{
+		int rv = ffsl(0x08);
+		printf("%d\n", rv);
+	}
+  ], [je_cv_function_ffsl])
+  if test "x${je_cv_function_ffsl}" = "xyes" ; then
+    AC_DEFINE([JEMALLOC_INTERNAL_FFSLL], [ffsll], [ ])
+    AC_DEFINE([JEMALLOC_INTERNAL_FFSL], [ffsl], [ ])
+    AC_DEFINE([JEMALLOC_INTERNAL_FFS], [ffs], [ ])
+  else
+    AC_MSG_ERROR([Cannot build without ffsl(3) or __builtin_ffsl()])
+  fi
+fi
+
+JE_COMPILABLE([a program using __builtin_popcountl], [
+#include <stdio.h>
+#include <strings.h>
+#include <string.h>
+], [
+	{
+		int rv = __builtin_popcountl(0x08);
+		printf("%d\n", rv);
+	}
+], [je_cv_gcc_builtin_popcountl])
+if test "x${je_cv_gcc_builtin_popcountl}" = "xyes" ; then
+  AC_DEFINE([JEMALLOC_INTERNAL_POPCOUNT], [__builtin_popcount], [ ])
+  AC_DEFINE([JEMALLOC_INTERNAL_POPCOUNTL], [__builtin_popcountl], [ ])
+  AC_DEFINE([JEMALLOC_INTERNAL_POPCOUNTLL], [__builtin_popcountll], [ ])
+fi
+
+AC_ARG_WITH([lg_quantum],
+  [AS_HELP_STRING([--with-lg-quantum=<lg-quantum>],
+   [Base 2 log of minimum allocation alignment])])
+if test "x$with_lg_quantum" != "x" ; then
+  AC_DEFINE_UNQUOTED([LG_QUANTUM], [$with_lg_quantum], [ ])
+fi
+
+AC_ARG_WITH([lg_slab_maxregs],
+  [AS_HELP_STRING([--with-lg-slab-maxregs=<lg-slab-maxregs>],
+   [Base 2 log of maximum number of regions in a slab (used with malloc_conf slab_sizes)])],
+  [CONFIG_LG_SLAB_MAXREGS="with_lg_slab_maxregs"],
+  [CONFIG_LG_SLAB_MAXREGS=""])
+if test "x$with_lg_slab_maxregs" != "x" ; then
+  AC_DEFINE_UNQUOTED([CONFIG_LG_SLAB_MAXREGS], [$with_lg_slab_maxregs], [ ])
+fi
+
+AC_ARG_WITH([lg_page],
+  [AS_HELP_STRING([--with-lg-page=<lg-page>], [Base 2 log of system page size])],
+  [LG_PAGE="$with_lg_page"], [LG_PAGE="detect"])
+case "${host}" in
+  aarch64-apple-darwin*)
+      dnl When cross-compile for Apple M1 and no page size specified, use the
+      dnl default and skip detecting the page size (which is likely incorrect).
+      if test "x${host}" != "x${build}" -a "x$LG_PAGE" = "xdetect"; then
+        LG_PAGE=14
+      fi
+      ;;
+esac
+if test "x$LG_PAGE" = "xdetect"; then
+  AC_CACHE_CHECK([LG_PAGE],
+               [je_cv_lg_page],
+               AC_RUN_IFELSE([AC_LANG_PROGRAM(
+[[
+#include <strings.h>
+#ifdef _WIN32
+#include <windows.h>
+#else
+#include <unistd.h>
+#endif
+#include <stdio.h>
+]],
+[[
+    int result;
+    FILE *f;
+
+#ifdef _WIN32
+    SYSTEM_INFO si;
+    GetSystemInfo(&si);
+    result = si.dwPageSize;
+#else
+    result = sysconf(_SC_PAGESIZE);
+#endif
+    if (result == -1) {
+	return 1;
+    }
+    result = JEMALLOC_INTERNAL_FFSL(result) - 1;
+
+    f = fopen("conftest.out", "w");
+    if (f == NULL) {
+	return 1;
+    }
+    fprintf(f, "%d", result);
+    fclose(f);
+
+    return 0;
+]])],
+                             [je_cv_lg_page=`cat conftest.out`],
+                             [je_cv_lg_page=undefined],
+                             [je_cv_lg_page=12]))
+fi
+if test "x${je_cv_lg_page}" != "x" ; then
+  LG_PAGE="${je_cv_lg_page}"
+fi
+if test "x${LG_PAGE}" != "xundefined" ; then
+   AC_DEFINE_UNQUOTED([LG_PAGE], [$LG_PAGE], [ ])
+else
+   AC_MSG_ERROR([cannot determine value for LG_PAGE])
+fi
+
+AC_ARG_WITH([lg_hugepage],
+  [AS_HELP_STRING([--with-lg-hugepage=<lg-hugepage>],
+   [Base 2 log of system huge page size])],
+  [je_cv_lg_hugepage="${with_lg_hugepage}"],
+  [je_cv_lg_hugepage=""])
+if test "x${je_cv_lg_hugepage}" = "x" ; then
+  dnl Look in /proc/meminfo (Linux-specific) for information on the default huge
+  dnl page size, if any.  The relevant line looks like:
+  dnl
+  dnl   Hugepagesize:       2048 kB
+  if test -e "/proc/meminfo" ; then
+    hpsk=[`cat /proc/meminfo 2>/dev/null | \
+          grep -e '^Hugepagesize:[[:space:]]\+[0-9]\+[[:space:]]kB$' | \
+          awk '{print $2}'`]
+    if test "x${hpsk}" != "x" ; then
+      je_cv_lg_hugepage=10
+      while test "${hpsk}" -gt 1 ; do
+        hpsk="$((hpsk / 2))"
+        je_cv_lg_hugepage="$((je_cv_lg_hugepage + 1))"
+      done
+    fi
+  fi
+
+  dnl Set default if unable to automatically configure.
+  if test "x${je_cv_lg_hugepage}" = "x" ; then
+    je_cv_lg_hugepage=21
+  fi
+fi
+if test "x${LG_PAGE}" != "xundefined" -a \
+        "${je_cv_lg_hugepage}" -lt "${LG_PAGE}" ; then
+  AC_MSG_ERROR([Huge page size (2^${je_cv_lg_hugepage}) must be at least page size (2^${LG_PAGE})])
+fi
+AC_DEFINE_UNQUOTED([LG_HUGEPAGE], [${je_cv_lg_hugepage}], [ ])
+
+dnl ============================================================================
+dnl Enable libdl by default.
+AC_ARG_ENABLE([libdl],
+  [AS_HELP_STRING([--disable-libdl],
+  [Do not use libdl])],
+[if test "x$enable_libdl" = "xno" ; then
+  enable_libdl="0"
+else
+  enable_libdl="1"
+fi
+],
+[enable_libdl="1"]
+)
+AC_SUBST([libdl])
+
+dnl ============================================================================
+dnl Configure pthreads.
+
+if test "x$abi" != "xpecoff" ; then
+  AC_DEFINE([JEMALLOC_HAVE_PTHREAD], [ ], [ ])
+  AC_CHECK_HEADERS([pthread.h], , [AC_MSG_ERROR([pthread.h is missing])])
+  dnl Some systems may embed pthreads functionality in libc; check for libpthread
+  dnl first, but try libc too before failing.
+  AC_CHECK_LIB([pthread], [pthread_create], [JE_APPEND_VS(LIBS, -pthread)],
+               [AC_SEARCH_LIBS([pthread_create], , ,
+                               AC_MSG_ERROR([libpthread is missing]))])
+  wrap_syms="${wrap_syms} pthread_create"
+  have_pthread="1"
+
+dnl Check if we have dlsym support.
+  if test "x$enable_libdl" = "x1" ; then
+    have_dlsym="1"
+    AC_CHECK_HEADERS([dlfcn.h],
+      AC_CHECK_FUNC([dlsym], [],
+        [AC_CHECK_LIB([dl], [dlsym], [LIBS="$LIBS -ldl"], [have_dlsym="0"])]),
+      [have_dlsym="0"])
+    if test "x$have_dlsym" = "x1" ; then
+      AC_DEFINE([JEMALLOC_HAVE_DLSYM], [ ], [ ])
+    fi
+  else
+    have_dlsym="0"
+  fi
+
+  JE_COMPILABLE([pthread_atfork(3)], [
+#include <pthread.h>
+], [
+  pthread_atfork((void *)0, (void *)0, (void *)0);
+], [je_cv_pthread_atfork])
+  if test "x${je_cv_pthread_atfork}" = "xyes" ; then
+    AC_DEFINE([JEMALLOC_HAVE_PTHREAD_ATFORK], [ ], [ ])
+  fi
+  dnl Check if pthread_setname_np is available with the expected API.
+  JE_COMPILABLE([pthread_setname_np(3)], [
+#include <pthread.h>
+], [
+  pthread_setname_np(pthread_self(), "setname_test");
+], [je_cv_pthread_setname_np])
+  if test "x${je_cv_pthread_setname_np}" = "xyes" ; then
+    AC_DEFINE([JEMALLOC_HAVE_PTHREAD_SETNAME_NP], [ ], [ ])
+  fi
+  dnl Check if pthread_getname_np is not necessarily present despite
+  dnl the pthread_setname_np counterpart
+  JE_COMPILABLE([pthread_getname_np(3)], [
+#include <pthread.h>
+#include <stdlib.h>
+], [
+  {
+  	char *name = malloc(16);
+  	pthread_getname_np(pthread_self(), name, 16);
+	free(name);
+  }
+], [je_cv_pthread_getname_np])
+  if test "x${je_cv_pthread_getname_np}" = "xyes" ; then
+    AC_DEFINE([JEMALLOC_HAVE_PTHREAD_GETNAME_NP], [ ], [ ])
+  fi
+  dnl Check if pthread_get_name_np is not necessarily present despite
+  dnl the pthread_set_name_np counterpart
+  JE_COMPILABLE([pthread_get_name_np(3)], [
+#include <pthread.h>
+#include <pthread_np.h>
+#include <stdlib.h>
+], [
+  {
+  	char *name = malloc(16);
+  	pthread_get_name_np(pthread_self(), name, 16);
+	free(name);
+  }
+], [je_cv_pthread_get_name_np])
+  if test "x${je_cv_pthread_get_name_np}" = "xyes" ; then
+    AC_DEFINE([JEMALLOC_HAVE_PTHREAD_GET_NAME_NP], [ ], [ ])
+  fi
+fi
+
+JE_APPEND_VS(CPPFLAGS, -D_REENTRANT)
+
+dnl Check whether clock_gettime(2) is in libc or librt.
+AC_SEARCH_LIBS([clock_gettime], [rt])
+
+dnl Cray wrapper compiler often adds `-lrt` when using `-static`. Check with
+dnl `-dynamic` as well in case a user tries to dynamically link in jemalloc
+if test "x$je_cv_cray_prgenv_wrapper" = "xyes" ; then
+  if test "$ac_cv_search_clock_gettime" != "-lrt"; then
+    JE_CFLAGS_SAVE()
+
+    unset ac_cv_search_clock_gettime
+    JE_CFLAGS_ADD([-dynamic])
+    AC_SEARCH_LIBS([clock_gettime], [rt])
+
+    JE_CFLAGS_RESTORE()
+  fi
+fi
+
+dnl check for CLOCK_MONOTONIC_COARSE (Linux-specific).
+JE_COMPILABLE([clock_gettime(CLOCK_MONOTONIC_COARSE, ...)], [
+#include <time.h>
+], [
+	struct timespec ts;
+
+	clock_gettime(CLOCK_MONOTONIC_COARSE, &ts);
+], [je_cv_clock_monotonic_coarse])
+if test "x${je_cv_clock_monotonic_coarse}" = "xyes" ; then
+  AC_DEFINE([JEMALLOC_HAVE_CLOCK_MONOTONIC_COARSE], [ ], [ ])
+fi
+
+dnl check for CLOCK_MONOTONIC.
+JE_COMPILABLE([clock_gettime(CLOCK_MONOTONIC, ...)], [
+#include <unistd.h>
+#include <time.h>
+], [
+	struct timespec ts;
+
+	clock_gettime(CLOCK_MONOTONIC, &ts);
+#if !defined(_POSIX_MONOTONIC_CLOCK) || _POSIX_MONOTONIC_CLOCK < 0
+#  error _POSIX_MONOTONIC_CLOCK missing/invalid
+#endif
+], [je_cv_clock_monotonic])
+if test "x${je_cv_clock_monotonic}" = "xyes" ; then
+  AC_DEFINE([JEMALLOC_HAVE_CLOCK_MONOTONIC], [ ], [ ])
+fi
+
+dnl Check for mach_absolute_time().
+JE_COMPILABLE([mach_absolute_time()], [
+#include <mach/mach_time.h>
+], [
+	mach_absolute_time();
+], [je_cv_mach_absolute_time])
+if test "x${je_cv_mach_absolute_time}" = "xyes" ; then
+  AC_DEFINE([JEMALLOC_HAVE_MACH_ABSOLUTE_TIME], [ ], [ ])
+fi
+
+dnl check for CLOCK_REALTIME (always should be available on Linux)
+JE_COMPILABLE([clock_gettime(CLOCK_REALTIME, ...)], [
+#include <time.h>
+], [
+	struct timespec ts;
+
+	clock_gettime(CLOCK_REALTIME, &ts);
+], [je_cv_clock_realtime])
+if test "x${je_cv_clock_realtime}" = "xyes" ; then
+  AC_DEFINE([JEMALLOC_HAVE_CLOCK_REALTIME], [ ], [ ])
+fi
+
+dnl Use syscall(2) (if available) by default.
+AC_ARG_ENABLE([syscall],
+  [AS_HELP_STRING([--disable-syscall], [Disable use of syscall(2)])],
+[if test "x$enable_syscall" = "xno" ; then
+  enable_syscall="0"
+else
+  enable_syscall="1"
+fi
+],
+[enable_syscall="1"]
+)
+if test "x$enable_syscall" = "x1" ; then
+  dnl Check if syscall(2) is usable.  Treat warnings as errors, so that e.g. OS
+  dnl X 10.12's deprecation warning prevents use.
+  JE_CFLAGS_SAVE()
+  JE_CFLAGS_ADD([-Werror])
+  JE_COMPILABLE([syscall(2)], [
+#include <sys/syscall.h>
+#include <unistd.h>
+], [
+	syscall(SYS_write, 2, "hello", 5);
+],
+                [je_cv_syscall])
+  JE_CFLAGS_RESTORE()
+  if test "x$je_cv_syscall" = "xyes" ; then
+    AC_DEFINE([JEMALLOC_USE_SYSCALL], [ ], [ ])
+  fi
+fi
+
+dnl Check if the GNU-specific secure_getenv function exists.
+AC_CHECK_FUNC([secure_getenv],
+              [have_secure_getenv="1"],
+              [have_secure_getenv="0"]
+             )
+if test "x$have_secure_getenv" = "x1" ; then
+  AC_DEFINE([JEMALLOC_HAVE_SECURE_GETENV], [ ], [ ])
+fi
+
+dnl Check if the GNU-specific sched_getcpu function exists.
+AC_CHECK_FUNC([sched_getcpu],
+              [have_sched_getcpu="1"],
+              [have_sched_getcpu="0"]
+             )
+if test "x$have_sched_getcpu" = "x1" ; then
+  AC_DEFINE([JEMALLOC_HAVE_SCHED_GETCPU], [ ], [ ])
+fi
+
+dnl Check if the GNU-specific sched_setaffinity function exists.
+AC_CHECK_FUNC([sched_setaffinity],
+              [have_sched_setaffinity="1"],
+              [have_sched_setaffinity="0"]
+             )
+if test "x$have_sched_setaffinity" = "x1" ; then
+  AC_DEFINE([JEMALLOC_HAVE_SCHED_SETAFFINITY], [ ], [ ])
+fi
+
+dnl Check if the Solaris/BSD issetugid function exists.
+AC_CHECK_FUNC([issetugid],
+              [have_issetugid="1"],
+              [have_issetugid="0"]
+             )
+if test "x$have_issetugid" = "x1" ; then
+  AC_DEFINE([JEMALLOC_HAVE_ISSETUGID], [ ], [ ])
+fi
+
+dnl Check whether the BSD-specific _malloc_thread_cleanup() exists.  If so, use
+dnl it rather than pthreads TSD cleanup functions to support cleanup during
+dnl thread exit, in order to avoid pthreads library recursion during
+dnl bootstrapping.
+AC_CHECK_FUNC([_malloc_thread_cleanup],
+              [have__malloc_thread_cleanup="1"],
+              [have__malloc_thread_cleanup="0"]
+             )
+if test "x$have__malloc_thread_cleanup" = "x1" ; then
+  AC_DEFINE([JEMALLOC_MALLOC_THREAD_CLEANUP], [ ], [ ])
+  wrap_syms="${wrap_syms} _malloc_thread_cleanup _malloc_tsd_cleanup_register"
+  force_tls="1"
+fi
+
+dnl Check whether the BSD-specific _pthread_mutex_init_calloc_cb() exists.  If
+dnl so, mutex initialization causes allocation, and we need to implement this
+dnl callback function in order to prevent recursive allocation.
+AC_CHECK_FUNC([_pthread_mutex_init_calloc_cb],
+              [have__pthread_mutex_init_calloc_cb="1"],
+              [have__pthread_mutex_init_calloc_cb="0"]
+             )
+if test "x$have__pthread_mutex_init_calloc_cb" = "x1" ; then
+  AC_DEFINE([JEMALLOC_MUTEX_INIT_CB], [ ], [ ])
+  wrap_syms="${wrap_syms} _malloc_prefork _malloc_postfork"
+fi
+
+AC_CHECK_FUNC([memcntl],
+	      [have_memcntl="1"],
+	      [have_memcntl="0"],
+	      )
+if test "x$have_memcntl" = "x1" ; then
+  AC_DEFINE([JEMALLOC_HAVE_MEMCNTL], [ ], [ ])
+fi
+
+dnl Disable lazy locking by default.
+AC_ARG_ENABLE([lazy_lock],
+  [AS_HELP_STRING([--enable-lazy-lock],
+  [Enable lazy locking (only lock when multi-threaded)])],
+[if test "x$enable_lazy_lock" = "xno" ; then
+  enable_lazy_lock="0"
+else
+  enable_lazy_lock="1"
+fi
+],
+[enable_lazy_lock=""]
+)
+if test "x${enable_lazy_lock}" = "x" ; then
+  if test "x${force_lazy_lock}" = "x1" ; then
+    AC_MSG_RESULT([Forcing lazy-lock to avoid allocator/threading bootstrap issues])
+    enable_lazy_lock="1"
+  else
+    enable_lazy_lock="0"
+  fi
+fi
+if test "x${enable_lazy_lock}" = "x1" -a "x${abi}" = "xpecoff" ; then
+  AC_MSG_RESULT([Forcing no lazy-lock because thread creation monitoring is unimplemented])
+  enable_lazy_lock="0"
+fi
+if test "x$enable_lazy_lock" = "x1" ; then
+  if test "x$have_dlsym" = "x1" ; then
+    AC_DEFINE([JEMALLOC_LAZY_LOCK], [ ], [ ])
+  else
+    AC_MSG_ERROR([Missing dlsym support: lazy-lock cannot be enabled.])
+  fi
+fi
+AC_SUBST([enable_lazy_lock])
+
+dnl Automatically configure TLS.
+if test "x${force_tls}" = "x1" ; then
+  enable_tls="1"
+elif test "x${force_tls}" = "x0" ; then
+  enable_tls="0"
+else
+  enable_tls="1"
+fi
+if test "x${enable_tls}" = "x1" ; then
+AC_MSG_CHECKING([for TLS])
+AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
+[[
+    __thread int x;
+]], [[
+    x = 42;
+
+    return 0;
+]])],
+              AC_MSG_RESULT([yes]),
+              AC_MSG_RESULT([no])
+              enable_tls="0")
+else
+  enable_tls="0"
+fi
+AC_SUBST([enable_tls])
+if test "x${enable_tls}" = "x1" ; then
+  AC_DEFINE_UNQUOTED([JEMALLOC_TLS], [ ], [ ])
+fi
+
+dnl ============================================================================
+dnl Check for C11 atomics.
+
+JE_COMPILABLE([C11 atomics], [
+#include <stdint.h>
+#if (__STDC_VERSION__ >= 201112L) && !defined(__STDC_NO_ATOMICS__)
+#include <stdatomic.h>
+#else
+#error Atomics not available
+#endif
+], [
+    uint64_t *p = (uint64_t *)0;
+    uint64_t x = 1;
+    volatile atomic_uint_least64_t *a = (volatile atomic_uint_least64_t *)p;
+    uint64_t r = atomic_fetch_add(a, x) + x;
+    return r == 0;
+], [je_cv_c11_atomics])
+if test "x${je_cv_c11_atomics}" = "xyes" ; then
+  AC_DEFINE([JEMALLOC_C11_ATOMICS], [ ], [ ])
+fi
+
+dnl ============================================================================
+dnl Check for GCC-style __atomic atomics.
+
+JE_COMPILABLE([GCC __atomic atomics], [
+], [
+    int x = 0;
+    int val = 1;
+    int y = __atomic_fetch_add(&x, val, __ATOMIC_RELAXED);
+    int after_add = x;
+    return after_add == 1;
+], [je_cv_gcc_atomic_atomics])
+if test "x${je_cv_gcc_atomic_atomics}" = "xyes" ; then
+  AC_DEFINE([JEMALLOC_GCC_ATOMIC_ATOMICS], [ ], [ ])
+
+  dnl check for 8-bit atomic support
+  JE_COMPILABLE([GCC 8-bit __atomic atomics], [
+  ], [
+      unsigned char x = 0;
+      int val = 1;
+      int y = __atomic_fetch_add(&x, val, __ATOMIC_RELAXED);
+      int after_add = (int)x;
+      return after_add == 1;
+  ], [je_cv_gcc_u8_atomic_atomics])
+  if test "x${je_cv_gcc_u8_atomic_atomics}" = "xyes" ; then
+    AC_DEFINE([JEMALLOC_GCC_U8_ATOMIC_ATOMICS], [ ], [ ])
+  fi
+fi
+
+dnl ============================================================================
+dnl Check for GCC-style __sync atomics.
+
+JE_COMPILABLE([GCC __sync atomics], [
+], [
+    int x = 0;
+    int before_add = __sync_fetch_and_add(&x, 1);
+    int after_add = x;
+    return (before_add == 0) && (after_add == 1);
+], [je_cv_gcc_sync_atomics])
+if test "x${je_cv_gcc_sync_atomics}" = "xyes" ; then
+  AC_DEFINE([JEMALLOC_GCC_SYNC_ATOMICS], [ ], [ ])
+
+  dnl check for 8-bit atomic support
+  JE_COMPILABLE([GCC 8-bit __sync atomics], [
+  ], [
+      unsigned char x = 0;
+      int before_add = __sync_fetch_and_add(&x, 1);
+      int after_add = (int)x;
+      return (before_add == 0) && (after_add == 1);
+  ], [je_cv_gcc_u8_sync_atomics])
+  if test "x${je_cv_gcc_u8_sync_atomics}" = "xyes" ; then
+    AC_DEFINE([JEMALLOC_GCC_U8_SYNC_ATOMICS], [ ], [ ])
+  fi
+fi
+
+dnl ============================================================================
+dnl Check for atomic(3) operations as provided on Darwin.
+dnl We need this not for the atomic operations (which are provided above), but
+dnl rather for the OS_unfair_lock type it exposes.
+
+JE_COMPILABLE([Darwin OSAtomic*()], [
+#include <libkern/OSAtomic.h>
+#include <inttypes.h>
+], [
+	{
+		int32_t x32 = 0;
+		volatile int32_t *x32p = &x32;
+		OSAtomicAdd32(1, x32p);
+	}
+	{
+		int64_t x64 = 0;
+		volatile int64_t *x64p = &x64;
+		OSAtomicAdd64(1, x64p);
+	}
+], [je_cv_osatomic])
+if test "x${je_cv_osatomic}" = "xyes" ; then
+  AC_DEFINE([JEMALLOC_OSATOMIC], [ ], [ ])
+fi
+
+dnl ============================================================================
+dnl Check for madvise(2).
+
+JE_COMPILABLE([madvise(2)], [
+#include <sys/mman.h>
+], [
+	madvise((void *)0, 0, 0);
+], [je_cv_madvise])
+if test "x${je_cv_madvise}" = "xyes" ; then
+  AC_DEFINE([JEMALLOC_HAVE_MADVISE], [ ], [ ])
+
+  dnl Check for madvise(..., MADV_FREE).
+  JE_COMPILABLE([madvise(..., MADV_FREE)], [
+#include <sys/mman.h>
+], [
+	madvise((void *)0, 0, MADV_FREE);
+], [je_cv_madv_free])
+  if test "x${je_cv_madv_free}" = "xyes" ; then
+    AC_DEFINE([JEMALLOC_PURGE_MADVISE_FREE], [ ], [ ])
+  elif test "x${je_cv_madvise}" = "xyes" ; then
+    case "${host_cpu}" in i686|x86_64)
+        case "${host}" in *-*-linux*)
+            AC_DEFINE([JEMALLOC_PURGE_MADVISE_FREE], [ ], [ ])
+            AC_DEFINE([JEMALLOC_DEFINE_MADVISE_FREE], [ ], [ ])
+	    ;;
+        esac
+        ;;
+    esac
+  fi
+
+  dnl Check for madvise(..., MADV_DONTNEED).
+  JE_COMPILABLE([madvise(..., MADV_DONTNEED)], [
+#include <sys/mman.h>
+], [
+	madvise((void *)0, 0, MADV_DONTNEED);
+], [je_cv_madv_dontneed])
+  if test "x${je_cv_madv_dontneed}" = "xyes" ; then
+    AC_DEFINE([JEMALLOC_PURGE_MADVISE_DONTNEED], [ ], [ ])
+  fi
+
+  dnl Check for madvise(..., MADV_DO[NT]DUMP).
+  JE_COMPILABLE([madvise(..., MADV_DO[[NT]]DUMP)], [
+#include <sys/mman.h>
+], [
+	madvise((void *)0, 0, MADV_DONTDUMP);
+	madvise((void *)0, 0, MADV_DODUMP);
+], [je_cv_madv_dontdump])
+  if test "x${je_cv_madv_dontdump}" = "xyes" ; then
+    AC_DEFINE([JEMALLOC_MADVISE_DONTDUMP], [ ], [ ])
+  fi
+
+  dnl Check for madvise(..., MADV_[NO]HUGEPAGE).
+  JE_COMPILABLE([madvise(..., MADV_[[NO]]HUGEPAGE)], [
+#include <sys/mman.h>
+], [
+	madvise((void *)0, 0, MADV_HUGEPAGE);
+	madvise((void *)0, 0, MADV_NOHUGEPAGE);
+], [je_cv_thp])
+  dnl Check for madvise(..., MADV_[NO]CORE).
+  JE_COMPILABLE([madvise(..., MADV_[[NO]]CORE)], [
+#include <sys/mman.h>
+], [
+	madvise((void *)0, 0, MADV_NOCORE);
+	madvise((void *)0, 0, MADV_CORE);
+], [je_cv_madv_nocore])
+  if test "x${je_cv_madv_nocore}" = "xyes" ; then
+    AC_DEFINE([JEMALLOC_MADVISE_NOCORE], [ ], [ ])
+  fi
+case "${host_cpu}" in
+  arm*)
+    ;;
+  *)
+  if test "x${je_cv_thp}" = "xyes" ; then
+    AC_DEFINE([JEMALLOC_HAVE_MADVISE_HUGE], [ ], [ ])
+  fi
+  ;;
+esac
+else
+  dnl Check for posix_madvise.
+  JE_COMPILABLE([posix_madvise], [
+  #include <sys/mman.h>
+  ], [
+    posix_madvise((void *)0, 0, 0);
+  ], [je_cv_posix_madvise])
+  if test "x${je_cv_posix_madvise}" = "xyes" ; then
+    AC_DEFINE([JEMALLOC_HAVE_POSIX_MADVISE], [ ], [ ])
+
+    dnl Check for posix_madvise(..., POSIX_MADV_DONTNEED).
+    JE_COMPILABLE([posix_madvise(..., POSIX_MADV_DONTNEED)], [
+  #include <sys/mman.h>
+  ], [
+    posix_madvise((void *)0, 0, POSIX_MADV_DONTNEED);
+  ], [je_cv_posix_madv_dontneed])
+    if test "x${je_cv_posix_madv_dontneed}" = "xyes" ; then
+      AC_DEFINE([JEMALLOC_PURGE_POSIX_MADVISE_DONTNEED], [ ], [ ])
+    fi
+  fi
+fi
+
+dnl ============================================================================
+dnl Check for mprotect(2).
+
+JE_COMPILABLE([mprotect(2)], [
+#include <sys/mman.h>
+], [
+	mprotect((void *)0, 0, PROT_NONE);
+], [je_cv_mprotect])
+if test "x${je_cv_mprotect}" = "xyes" ; then
+  AC_DEFINE([JEMALLOC_HAVE_MPROTECT], [ ], [ ])
+fi
+
+dnl ============================================================================
+dnl Check for __builtin_clz(), __builtin_clzl(), and __builtin_clzll().
+
+AC_CACHE_CHECK([for __builtin_clz],
+               [je_cv_builtin_clz],
+               [AC_LINK_IFELSE([AC_LANG_PROGRAM([],
+                                                [
+                                                {
+                                                        unsigned x = 0;
+                                                        int y = __builtin_clz(x);
+                                                }
+                                                {
+                                                        unsigned long x = 0;
+                                                        int y = __builtin_clzl(x);
+                                                }
+                                                {
+                                                        unsigned long long x = 0;
+                                                        int y = __builtin_clzll(x);
+                                                }
+                                                ])],
+                               [je_cv_builtin_clz=yes],
+                               [je_cv_builtin_clz=no])])
+
+if test "x${je_cv_builtin_clz}" = "xyes" ; then
+  AC_DEFINE([JEMALLOC_HAVE_BUILTIN_CLZ], [ ], [ ])
+fi
+
+dnl ============================================================================
+dnl Check for os_unfair_lock operations as provided on Darwin.
+
+JE_COMPILABLE([Darwin os_unfair_lock_*()], [
+#include <os/lock.h>
+#include <AvailabilityMacros.h>
+], [
+	#if MAC_OS_X_VERSION_MIN_REQUIRED < 101200
+	#error "os_unfair_lock is not supported"
+	#else
+	os_unfair_lock lock = OS_UNFAIR_LOCK_INIT;
+	os_unfair_lock_lock(&lock);
+	os_unfair_lock_unlock(&lock);
+	#endif
+], [je_cv_os_unfair_lock])
+if test "x${je_cv_os_unfair_lock}" = "xyes" ; then
+  AC_DEFINE([JEMALLOC_OS_UNFAIR_LOCK], [ ], [ ])
+fi
+
+dnl ============================================================================
+dnl Darwin-related configuration.
+
+AC_ARG_ENABLE([zone-allocator],
+  [AS_HELP_STRING([--disable-zone-allocator],
+                  [Disable zone allocator for Darwin])],
+[if test "x$enable_zone_allocator" = "xno" ; then
+  enable_zone_allocator="0"
+else
+  enable_zone_allocator="1"
+fi
+],
+[if test "x${abi}" = "xmacho"; then
+  enable_zone_allocator="1"
+fi
+]
+)
+AC_SUBST([enable_zone_allocator])
+
+if test "x${enable_zone_allocator}" = "x1" ; then
+  if test "x${abi}" != "xmacho"; then
+    AC_MSG_ERROR([--enable-zone-allocator is only supported on Darwin])
+  fi
+  AC_DEFINE([JEMALLOC_ZONE], [ ], [ ])
+fi
+
+dnl ============================================================================
+dnl Use initial-exec TLS by default.
+AC_ARG_ENABLE([initial-exec-tls],
+  [AS_HELP_STRING([--disable-initial-exec-tls],
+                  [Disable the initial-exec tls model])],
+[if test "x$enable_initial_exec_tls" = "xno" ; then
+  enable_initial_exec_tls="0"
+else
+  enable_initial_exec_tls="1"
+fi
+],
+[enable_initial_exec_tls="1"]
+)
+AC_SUBST([enable_initial_exec_tls])
+
+if test "x${je_cv_tls_model}" = "xyes" -a \
+       "x${enable_initial_exec_tls}" = "x1" ; then
+  AC_DEFINE([JEMALLOC_TLS_MODEL],
+            [__attribute__((tls_model("initial-exec")))], 
+            [ ])
+else
+  AC_DEFINE([JEMALLOC_TLS_MODEL], [ ], [ ])
+fi
+
+dnl ============================================================================
+dnl Enable background threads if possible.
+
+if test "x${have_pthread}" = "x1" -a "x${je_cv_os_unfair_lock}" != "xyes" -a \
+       "x${abi}" != "xmacho" ; then
+  AC_DEFINE([JEMALLOC_BACKGROUND_THREAD], [ ], [ ])
+fi
+
+dnl ============================================================================
+dnl Check for glibc malloc hooks
+
+if test "x$glibc" = "x1" ; then
+  JE_COMPILABLE([glibc malloc hook], [
+  #include <stddef.h>
+
+  extern void (* __free_hook)(void *ptr);
+  extern void *(* __malloc_hook)(size_t size);
+  extern void *(* __realloc_hook)(void *ptr, size_t size);
+], [
+    void *ptr = 0L;
+    if (__malloc_hook) ptr = __malloc_hook(1);
+    if (__realloc_hook) ptr = __realloc_hook(ptr, 2);
+    if (__free_hook && ptr) __free_hook(ptr);
+], [je_cv_glibc_malloc_hook])
+  if test "x${je_cv_glibc_malloc_hook}" = "xyes" ; then
+    if test "x${JEMALLOC_PREFIX}" = "x" ; then
+      AC_DEFINE([JEMALLOC_GLIBC_MALLOC_HOOK], [ ], [ ])
+      wrap_syms="${wrap_syms} __free_hook __malloc_hook __realloc_hook"
+    fi
+  fi
+
+  JE_COMPILABLE([glibc memalign hook], [
+  #include <stddef.h>
+
+  extern void *(* __memalign_hook)(size_t alignment, size_t size);
+], [
+    void *ptr = 0L;
+    if (__memalign_hook) ptr = __memalign_hook(16, 7);
+], [je_cv_glibc_memalign_hook])
+  if test "x${je_cv_glibc_memalign_hook}" = "xyes" ; then
+    if test "x${JEMALLOC_PREFIX}" = "x" ; then
+      AC_DEFINE([JEMALLOC_GLIBC_MEMALIGN_HOOK], [ ], [ ])
+      wrap_syms="${wrap_syms} __memalign_hook"
+    fi
+  fi
+fi
+
+JE_COMPILABLE([pthreads adaptive mutexes], [
+#include <pthread.h>
+], [
+  pthread_mutexattr_t attr;
+  pthread_mutexattr_init(&attr);
+  pthread_mutexattr_settype(&attr, PTHREAD_MUTEX_ADAPTIVE_NP);
+  pthread_mutexattr_destroy(&attr);
+], [je_cv_pthread_mutex_adaptive_np])
+if test "x${je_cv_pthread_mutex_adaptive_np}" = "xyes" ; then
+  AC_DEFINE([JEMALLOC_HAVE_PTHREAD_MUTEX_ADAPTIVE_NP], [ ], [ ])
+fi
+
+JE_CFLAGS_SAVE()
+JE_CFLAGS_ADD([-D_GNU_SOURCE])
+JE_CFLAGS_ADD([-Werror])
+JE_CFLAGS_ADD([-herror_on_warning])
+JE_COMPILABLE([strerror_r returns char with gnu source], [
+#include <errno.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+], [
+  char *buffer = (char *) malloc(100);
+  char *error = strerror_r(EINVAL, buffer, 100);
+  printf("%s\n", error);
+], [je_cv_strerror_r_returns_char_with_gnu_source])
+JE_CFLAGS_RESTORE()
+if test "x${je_cv_strerror_r_returns_char_with_gnu_source}" = "xyes" ; then
+  AC_DEFINE([JEMALLOC_STRERROR_R_RETURNS_CHAR_WITH_GNU_SOURCE], [ ], [ ])
+fi
+
+dnl ============================================================================
+dnl Check for typedefs, structures, and compiler characteristics.
+AC_HEADER_STDBOOL
+
+dnl ============================================================================
+dnl Define commands that generate output files.
+
+AC_CONFIG_COMMANDS([include/jemalloc/internal/public_symbols.txt], [
+  f="${objroot}include/jemalloc/internal/public_symbols.txt"
+  mkdir -p "${objroot}include/jemalloc/internal"
+  cp /dev/null "${f}"
+  for nm in `echo ${mangling_map} |tr ',' ' '` ; do
+    n=`echo ${nm} |tr ':' ' ' |awk '{print $[]1}'`
+    m=`echo ${nm} |tr ':' ' ' |awk '{print $[]2}'`
+    echo "${n}:${m}" >> "${f}"
+    dnl Remove name from public_syms so that it isn't redefined later.
+    public_syms=`for sym in ${public_syms}; do echo "${sym}"; done |grep -v "^${n}\$" |tr '\n' ' '`
+  done
+  for sym in ${public_syms} ; do
+    n="${sym}"
+    m="${JEMALLOC_PREFIX}${sym}"
+    echo "${n}:${m}" >> "${f}"
+  done
+], [
+  srcdir="${srcdir}"
+  objroot="${objroot}"
+  mangling_map="${mangling_map}"
+  public_syms="${public_syms}"
+  JEMALLOC_PREFIX="${JEMALLOC_PREFIX}"
+])
+AC_CONFIG_COMMANDS([include/jemalloc/internal/private_symbols.awk], [
+  f="${objroot}include/jemalloc/internal/private_symbols.awk"
+  mkdir -p "${objroot}include/jemalloc/internal"
+  export_syms=`for sym in ${public_syms}; do echo "${JEMALLOC_PREFIX}${sym}"; done; for sym in ${wrap_syms}; do echo "${sym}"; done;`
+  "${srcdir}/include/jemalloc/internal/private_symbols.sh" "${SYM_PREFIX}" ${export_syms} > "${objroot}include/jemalloc/internal/private_symbols.awk"
+], [
+  srcdir="${srcdir}"
+  objroot="${objroot}"
+  public_syms="${public_syms}"
+  wrap_syms="${wrap_syms}"
+  SYM_PREFIX="${SYM_PREFIX}"
+  JEMALLOC_PREFIX="${JEMALLOC_PREFIX}"
+])
+AC_CONFIG_COMMANDS([include/jemalloc/internal/private_symbols_jet.awk], [
+  f="${objroot}include/jemalloc/internal/private_symbols_jet.awk"
+  mkdir -p "${objroot}include/jemalloc/internal"
+  export_syms=`for sym in ${public_syms}; do echo "jet_${sym}"; done; for sym in ${wrap_syms}; do echo "${sym}"; done;`
+  "${srcdir}/include/jemalloc/internal/private_symbols.sh" "${SYM_PREFIX}" ${export_syms} > "${objroot}include/jemalloc/internal/private_symbols_jet.awk"
+], [
+  srcdir="${srcdir}"
+  objroot="${objroot}"
+  public_syms="${public_syms}"
+  wrap_syms="${wrap_syms}"
+  SYM_PREFIX="${SYM_PREFIX}"
+])
+AC_CONFIG_COMMANDS([include/jemalloc/internal/public_namespace.h], [
+  mkdir -p "${objroot}include/jemalloc/internal"
+  "${srcdir}/include/jemalloc/internal/public_namespace.sh" "${objroot}include/jemalloc/internal/public_symbols.txt" > "${objroot}include/jemalloc/internal/public_namespace.h"
+], [
+  srcdir="${srcdir}"
+  objroot="${objroot}"
+])
+AC_CONFIG_COMMANDS([include/jemalloc/internal/public_unnamespace.h], [
+  mkdir -p "${objroot}include/jemalloc/internal"
+  "${srcdir}/include/jemalloc/internal/public_unnamespace.sh" "${objroot}include/jemalloc/internal/public_symbols.txt" > "${objroot}include/jemalloc/internal/public_unnamespace.h"
+], [
+  srcdir="${srcdir}"
+  objroot="${objroot}"
+])
+AC_CONFIG_COMMANDS([include/jemalloc/jemalloc_protos_jet.h], [
+  mkdir -p "${objroot}include/jemalloc"
+  cat "${srcdir}/include/jemalloc/jemalloc_protos.h.in" | sed -e 's/@je_@/jet_/g' > "${objroot}include/jemalloc/jemalloc_protos_jet.h"
+], [
+  srcdir="${srcdir}"
+  objroot="${objroot}"
+])
+AC_CONFIG_COMMANDS([include/jemalloc/jemalloc_rename.h], [
+  mkdir -p "${objroot}include/jemalloc"
+  "${srcdir}/include/jemalloc/jemalloc_rename.sh" "${objroot}include/jemalloc/internal/public_symbols.txt" > "${objroot}include/jemalloc/jemalloc_rename.h"
+], [
+  srcdir="${srcdir}"
+  objroot="${objroot}"
+])
+AC_CONFIG_COMMANDS([include/jemalloc/jemalloc_mangle.h], [
+  mkdir -p "${objroot}include/jemalloc"
+  "${srcdir}/include/jemalloc/jemalloc_mangle.sh" "${objroot}include/jemalloc/internal/public_symbols.txt" je_ > "${objroot}include/jemalloc/jemalloc_mangle.h"
+], [
+  srcdir="${srcdir}"
+  objroot="${objroot}"
+])
+AC_CONFIG_COMMANDS([include/jemalloc/jemalloc_mangle_jet.h], [
+  mkdir -p "${objroot}include/jemalloc"
+  "${srcdir}/include/jemalloc/jemalloc_mangle.sh" "${objroot}include/jemalloc/internal/public_symbols.txt" jet_ > "${objroot}include/jemalloc/jemalloc_mangle_jet.h"
+], [
+  srcdir="${srcdir}"
+  objroot="${objroot}"
+])
+AC_CONFIG_COMMANDS([include/jemalloc/jemalloc.h], [
+  mkdir -p "${objroot}include/jemalloc"
+  "${srcdir}/include/jemalloc/jemalloc.sh" "${objroot}" > "${objroot}include/jemalloc/jemalloc${install_suffix}.h"
+], [
+  srcdir="${srcdir}"
+  objroot="${objroot}"
+  install_suffix="${install_suffix}"
+])
+
+dnl Process .in files.
+AC_SUBST([cfghdrs_in])
+AC_SUBST([cfghdrs_out])
+AC_CONFIG_HEADERS([$cfghdrs_tup])
+
+dnl ============================================================================
+dnl Generate outputs.
+
+AC_CONFIG_FILES([$cfgoutputs_tup config.stamp bin/jemalloc-config bin/jemalloc.sh bin/jeprof])
+AC_SUBST([cfgoutputs_in])
+AC_SUBST([cfgoutputs_out])
+AC_OUTPUT
+
+dnl ============================================================================
+dnl Print out the results of configuration.
+AC_MSG_RESULT([===============================================================================])
+AC_MSG_RESULT([jemalloc version   : ${jemalloc_version}])
+AC_MSG_RESULT([library revision   : ${rev}])
+AC_MSG_RESULT([])
+AC_MSG_RESULT([CONFIG             : ${CONFIG}])
+AC_MSG_RESULT([CC                 : ${CC}])
+AC_MSG_RESULT([CONFIGURE_CFLAGS   : ${CONFIGURE_CFLAGS}])
+AC_MSG_RESULT([SPECIFIED_CFLAGS   : ${SPECIFIED_CFLAGS}])
+AC_MSG_RESULT([EXTRA_CFLAGS       : ${EXTRA_CFLAGS}])
+AC_MSG_RESULT([CPPFLAGS           : ${CPPFLAGS}])
+AC_MSG_RESULT([CXX                : ${CXX}])
+AC_MSG_RESULT([CONFIGURE_CXXFLAGS : ${CONFIGURE_CXXFLAGS}])
+AC_MSG_RESULT([SPECIFIED_CXXFLAGS : ${SPECIFIED_CXXFLAGS}])
+AC_MSG_RESULT([EXTRA_CXXFLAGS     : ${EXTRA_CXXFLAGS}])
+AC_MSG_RESULT([LDFLAGS            : ${LDFLAGS}])
+AC_MSG_RESULT([EXTRA_LDFLAGS      : ${EXTRA_LDFLAGS}])
+AC_MSG_RESULT([DSO_LDFLAGS        : ${DSO_LDFLAGS}])
+AC_MSG_RESULT([LIBS               : ${LIBS}])
+AC_MSG_RESULT([RPATH_EXTRA        : ${RPATH_EXTRA}])
+AC_MSG_RESULT([])
+AC_MSG_RESULT([XSLTPROC           : ${XSLTPROC}])
+AC_MSG_RESULT([XSLROOT            : ${XSLROOT}])
+AC_MSG_RESULT([])
+AC_MSG_RESULT([PREFIX             : ${PREFIX}])
+AC_MSG_RESULT([BINDIR             : ${BINDIR}])
+AC_MSG_RESULT([DATADIR            : ${DATADIR}])
+AC_MSG_RESULT([INCLUDEDIR         : ${INCLUDEDIR}])
+AC_MSG_RESULT([LIBDIR             : ${LIBDIR}])
+AC_MSG_RESULT([MANDIR             : ${MANDIR}])
+AC_MSG_RESULT([])
+AC_MSG_RESULT([srcroot            : ${srcroot}])
+AC_MSG_RESULT([abs_srcroot        : ${abs_srcroot}])
+AC_MSG_RESULT([objroot            : ${objroot}])
+AC_MSG_RESULT([abs_objroot        : ${abs_objroot}])
+AC_MSG_RESULT([])
+AC_MSG_RESULT([JEMALLOC_PREFIX    : ${JEMALLOC_PREFIX}])
+AC_MSG_RESULT([JEMALLOC_PRIVATE_NAMESPACE])
+AC_MSG_RESULT([                   : ${JEMALLOC_PRIVATE_NAMESPACE}])
+AC_MSG_RESULT([install_suffix     : ${install_suffix}])
+AC_MSG_RESULT([malloc_conf        : ${config_malloc_conf}])
+AC_MSG_RESULT([documentation      : ${enable_doc}])
+AC_MSG_RESULT([shared libs        : ${enable_shared}])
+AC_MSG_RESULT([static libs        : ${enable_static}])
+AC_MSG_RESULT([autogen            : ${enable_autogen}])
+AC_MSG_RESULT([debug              : ${enable_debug}])
+AC_MSG_RESULT([stats              : ${enable_stats}])
+AC_MSG_RESULT([experimental_smallocx : ${enable_experimental_smallocx}])
+AC_MSG_RESULT([prof               : ${enable_prof}])
+AC_MSG_RESULT([prof-libunwind     : ${enable_prof_libunwind}])
+AC_MSG_RESULT([prof-libgcc        : ${enable_prof_libgcc}])
+AC_MSG_RESULT([prof-gcc           : ${enable_prof_gcc}])
+AC_MSG_RESULT([fill               : ${enable_fill}])
+AC_MSG_RESULT([utrace             : ${enable_utrace}])
+AC_MSG_RESULT([xmalloc            : ${enable_xmalloc}])
+AC_MSG_RESULT([log                : ${enable_log}])
+AC_MSG_RESULT([lazy_lock          : ${enable_lazy_lock}])
+AC_MSG_RESULT([cache-oblivious    : ${enable_cache_oblivious}])
+AC_MSG_RESULT([cxx                : ${enable_cxx}])
+AC_MSG_RESULT([===============================================================================])
diff --git a/deps/jemalloc/doc/html.xsl.in b/deps/jemalloc/doc/html.xsl.in
new file mode 100644
index 0000000..ec4fa65
--- /dev/null
+++ b/deps/jemalloc/doc/html.xsl.in
@@ -0,0 +1,5 @@
+<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform" version="1.0">
+  <xsl:import href="@XSLROOT@/html/docbook.xsl"/>
+  <xsl:import href="@abs_srcroot@doc/stylesheet.xsl"/>
+  <xsl:output method="xml" encoding="utf-8"/>
+</xsl:stylesheet>
diff --git a/deps/jemalloc/doc/jemalloc.xml.in b/deps/jemalloc/doc/jemalloc.xml.in
new file mode 100644
index 0000000..e28e8f3
--- /dev/null
+++ b/deps/jemalloc/doc/jemalloc.xml.in
@@ -0,0 +1,3763 @@
+<?xml version='1.0' encoding='UTF-8'?>
+<?xml-stylesheet type="text/xsl"
+        href="http://docbook.sourceforge.net/release/xsl/current/manpages/docbook.xsl"?>
+<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.4//EN"
+        "http://www.oasis-open.org/docbook/xml/4.4/docbookx.dtd" [
+]>
+
+<refentry>
+  <refentryinfo>
+    <title>User Manual</title>
+    <productname>jemalloc</productname>
+    <releaseinfo role="version">@jemalloc_version@</releaseinfo>
+    <authorgroup>
+      <author>
+        <firstname>Jason</firstname>
+        <surname>Evans</surname>
+        <personblurb>Author</personblurb>
+      </author>
+    </authorgroup>
+  </refentryinfo>
+  <refmeta>
+    <refentrytitle>JEMALLOC</refentrytitle>
+    <manvolnum>3</manvolnum>
+  </refmeta>
+  <refnamediv>
+    <refdescriptor>jemalloc</refdescriptor>
+    <refname>jemalloc</refname>
+    <!-- Each refname causes a man page file to be created.  Only if this were
+         the system malloc(3) implementation would these files be appropriate.
+    <refname>malloc</refname>
+    <refname>calloc</refname>
+    <refname>posix_memalign</refname>
+    <refname>aligned_alloc</refname>
+    <refname>realloc</refname>
+    <refname>free</refname>
+    <refname>mallocx</refname>
+    <refname>rallocx</refname>
+    <refname>xallocx</refname>
+    <refname>sallocx</refname>
+    <refname>dallocx</refname>
+    <refname>sdallocx</refname>
+    <refname>nallocx</refname>
+    <refname>mallctl</refname>
+    <refname>mallctlnametomib</refname>
+    <refname>mallctlbymib</refname>
+    <refname>malloc_stats_print</refname>
+    <refname>malloc_usable_size</refname>
+    -->
+    <refpurpose>general purpose memory allocation functions</refpurpose>
+  </refnamediv>
+  <refsect1 id="library">
+    <title>LIBRARY</title>
+    <para>This manual describes jemalloc @jemalloc_version@.  More information
+    can be found at the <ulink
+    url="http://jemalloc.net/">jemalloc website</ulink>.</para>
+  </refsect1>
+  <refsynopsisdiv>
+    <title>SYNOPSIS</title>
+    <funcsynopsis>
+      <funcsynopsisinfo>#include &lt;<filename class="headerfile">jemalloc/jemalloc.h</filename>&gt;</funcsynopsisinfo>
+      <refsect2>
+        <title>Standard API</title>
+        <funcprototype>
+          <funcdef>void *<function>malloc</function></funcdef>
+          <paramdef>size_t <parameter>size</parameter></paramdef>
+        </funcprototype>
+        <funcprototype>
+          <funcdef>void *<function>calloc</function></funcdef>
+          <paramdef>size_t <parameter>number</parameter></paramdef>
+          <paramdef>size_t <parameter>size</parameter></paramdef>
+        </funcprototype>
+        <funcprototype>
+          <funcdef>int <function>posix_memalign</function></funcdef>
+          <paramdef>void **<parameter>ptr</parameter></paramdef>
+          <paramdef>size_t <parameter>alignment</parameter></paramdef>
+          <paramdef>size_t <parameter>size</parameter></paramdef>
+        </funcprototype>
+        <funcprototype>
+          <funcdef>void *<function>aligned_alloc</function></funcdef>
+          <paramdef>size_t <parameter>alignment</parameter></paramdef>
+          <paramdef>size_t <parameter>size</parameter></paramdef>
+        </funcprototype>
+        <funcprototype>
+          <funcdef>void *<function>realloc</function></funcdef>
+          <paramdef>void *<parameter>ptr</parameter></paramdef>
+          <paramdef>size_t <parameter>size</parameter></paramdef>
+        </funcprototype>
+        <funcprototype>
+          <funcdef>void <function>free</function></funcdef>
+          <paramdef>void *<parameter>ptr</parameter></paramdef>
+        </funcprototype>
+      </refsect2>
+      <refsect2>
+        <title>Non-standard API</title>
+        <funcprototype>
+          <funcdef>void *<function>mallocx</function></funcdef>
+          <paramdef>size_t <parameter>size</parameter></paramdef>
+          <paramdef>int <parameter>flags</parameter></paramdef>
+        </funcprototype>
+        <funcprototype>
+          <funcdef>void *<function>rallocx</function></funcdef>
+          <paramdef>void *<parameter>ptr</parameter></paramdef>
+          <paramdef>size_t <parameter>size</parameter></paramdef>
+          <paramdef>int <parameter>flags</parameter></paramdef>
+        </funcprototype>
+        <funcprototype>
+          <funcdef>size_t <function>xallocx</function></funcdef>
+          <paramdef>void *<parameter>ptr</parameter></paramdef>
+          <paramdef>size_t <parameter>size</parameter></paramdef>
+          <paramdef>size_t <parameter>extra</parameter></paramdef>
+          <paramdef>int <parameter>flags</parameter></paramdef>
+        </funcprototype>
+        <funcprototype>
+          <funcdef>size_t <function>sallocx</function></funcdef>
+          <paramdef>void *<parameter>ptr</parameter></paramdef>
+          <paramdef>int <parameter>flags</parameter></paramdef>
+        </funcprototype>
+        <funcprototype>
+          <funcdef>void <function>dallocx</function></funcdef>
+          <paramdef>void *<parameter>ptr</parameter></paramdef>
+          <paramdef>int <parameter>flags</parameter></paramdef>
+        </funcprototype>
+        <funcprototype>
+          <funcdef>void <function>sdallocx</function></funcdef>
+          <paramdef>void *<parameter>ptr</parameter></paramdef>
+          <paramdef>size_t <parameter>size</parameter></paramdef>
+          <paramdef>int <parameter>flags</parameter></paramdef>
+        </funcprototype>
+        <funcprototype>
+          <funcdef>size_t <function>nallocx</function></funcdef>
+          <paramdef>size_t <parameter>size</parameter></paramdef>
+          <paramdef>int <parameter>flags</parameter></paramdef>
+        </funcprototype>
+        <funcprototype>
+          <funcdef>int <function>mallctl</function></funcdef>
+          <paramdef>const char *<parameter>name</parameter></paramdef>
+          <paramdef>void *<parameter>oldp</parameter></paramdef>
+          <paramdef>size_t *<parameter>oldlenp</parameter></paramdef>
+          <paramdef>void *<parameter>newp</parameter></paramdef>
+          <paramdef>size_t <parameter>newlen</parameter></paramdef>
+        </funcprototype>
+        <funcprototype>
+          <funcdef>int <function>mallctlnametomib</function></funcdef>
+          <paramdef>const char *<parameter>name</parameter></paramdef>
+          <paramdef>size_t *<parameter>mibp</parameter></paramdef>
+          <paramdef>size_t *<parameter>miblenp</parameter></paramdef>
+        </funcprototype>
+        <funcprototype>
+          <funcdef>int <function>mallctlbymib</function></funcdef>
+          <paramdef>const size_t *<parameter>mib</parameter></paramdef>
+          <paramdef>size_t <parameter>miblen</parameter></paramdef>
+          <paramdef>void *<parameter>oldp</parameter></paramdef>
+          <paramdef>size_t *<parameter>oldlenp</parameter></paramdef>
+          <paramdef>void *<parameter>newp</parameter></paramdef>
+          <paramdef>size_t <parameter>newlen</parameter></paramdef>
+        </funcprototype>
+        <funcprototype>
+          <funcdef>void <function>malloc_stats_print</function></funcdef>
+          <paramdef>void <parameter>(*write_cb)</parameter>
+            <funcparams>void *, const char *</funcparams>
+          </paramdef>
+          <paramdef>void *<parameter>cbopaque</parameter></paramdef>
+          <paramdef>const char *<parameter>opts</parameter></paramdef>
+        </funcprototype>
+        <funcprototype>
+          <funcdef>size_t <function>malloc_usable_size</function></funcdef>
+          <paramdef>const void *<parameter>ptr</parameter></paramdef>
+        </funcprototype>
+        <funcprototype>
+          <funcdef>void <function>(*malloc_message)</function></funcdef>
+          <paramdef>void *<parameter>cbopaque</parameter></paramdef>
+          <paramdef>const char *<parameter>s</parameter></paramdef>
+        </funcprototype>
+        <para><type>const char *</type><varname>malloc_conf</varname>;</para>
+      </refsect2>
+    </funcsynopsis>
+  </refsynopsisdiv>
+  <refsect1 id="description">
+    <title>DESCRIPTION</title>
+    <refsect2>
+      <title>Standard API</title>
+
+      <para>The <function>malloc()</function> function allocates
+      <parameter>size</parameter> bytes of uninitialized memory.  The allocated
+      space is suitably aligned (after possible pointer coercion) for storage
+      of any type of object.</para>
+
+      <para>The <function>calloc()</function> function allocates
+      space for <parameter>number</parameter> objects, each
+      <parameter>size</parameter> bytes in length.  The result is identical to
+      calling <function>malloc()</function> with an argument of
+      <parameter>number</parameter> * <parameter>size</parameter>, with the
+      exception that the allocated memory is explicitly initialized to zero
+      bytes.</para>
+
+      <para>The <function>posix_memalign()</function> function
+      allocates <parameter>size</parameter> bytes of memory such that the
+      allocation's base address is a multiple of
+      <parameter>alignment</parameter>, and returns the allocation in the value
+      pointed to by <parameter>ptr</parameter>.  The requested
+      <parameter>alignment</parameter> must be a power of 2 at least as large as
+      <code language="C">sizeof(<type>void *</type>)</code>.</para>
+
+      <para>The <function>aligned_alloc()</function> function
+      allocates <parameter>size</parameter> bytes of memory such that the
+      allocation's base address is a multiple of
+      <parameter>alignment</parameter>.  The requested
+      <parameter>alignment</parameter> must be a power of 2.  Behavior is
+      undefined if <parameter>size</parameter> is not an integral multiple of
+      <parameter>alignment</parameter>.</para>
+
+      <para>The <function>realloc()</function> function changes the
+      size of the previously allocated memory referenced by
+      <parameter>ptr</parameter> to <parameter>size</parameter> bytes.  The
+      contents of the memory are unchanged up to the lesser of the new and old
+      sizes.  If the new size is larger, the contents of the newly allocated
+      portion of the memory are undefined.  Upon success, the memory referenced
+      by <parameter>ptr</parameter> is freed and a pointer to the newly
+      allocated memory is returned.  Note that
+      <function>realloc()</function> may move the memory allocation,
+      resulting in a different return value than <parameter>ptr</parameter>.
+      If <parameter>ptr</parameter> is <constant>NULL</constant>, the
+      <function>realloc()</function> function behaves identically to
+      <function>malloc()</function> for the specified size.</para>
+
+      <para>The <function>free()</function> function causes the
+      allocated memory referenced by <parameter>ptr</parameter> to be made
+      available for future allocations.  If <parameter>ptr</parameter> is
+      <constant>NULL</constant>, no action occurs.</para>
+    </refsect2>
+    <refsect2>
+      <title>Non-standard API</title>
+      <para>The <function>mallocx()</function>,
+      <function>rallocx()</function>,
+      <function>xallocx()</function>,
+      <function>sallocx()</function>,
+      <function>dallocx()</function>,
+      <function>sdallocx()</function>, and
+      <function>nallocx()</function> functions all have a
+      <parameter>flags</parameter> argument that can be used to specify
+      options.  The functions only check the options that are contextually
+      relevant.  Use bitwise or (<code language="C">|</code>) operations to
+      specify one or more of the following:
+        <variablelist>
+          <varlistentry id="MALLOCX_LG_ALIGN">
+            <term><constant>MALLOCX_LG_ALIGN(<parameter>la</parameter>)
+            </constant></term>
+
+            <listitem><para>Align the memory allocation to start at an address
+            that is a multiple of <code language="C">(1 &lt;&lt;
+            <parameter>la</parameter>)</code>.  This macro does not validate
+            that <parameter>la</parameter> is within the valid
+            range.</para></listitem>
+          </varlistentry>
+          <varlistentry id="MALLOCX_ALIGN">
+            <term><constant>MALLOCX_ALIGN(<parameter>a</parameter>)
+            </constant></term>
+
+            <listitem><para>Align the memory allocation to start at an address
+            that is a multiple of <parameter>a</parameter>, where
+            <parameter>a</parameter> is a power of two.  This macro does not
+            validate that <parameter>a</parameter> is a power of 2.
+            </para></listitem>
+          </varlistentry>
+          <varlistentry id="MALLOCX_ZERO">
+            <term><constant>MALLOCX_ZERO</constant></term>
+
+            <listitem><para>Initialize newly allocated memory to contain zero
+            bytes.  In the growing reallocation case, the real size prior to
+            reallocation defines the boundary between untouched bytes and those
+            that are initialized to contain zero bytes.  If this macro is
+            absent, newly allocated memory is uninitialized.</para></listitem>
+          </varlistentry>
+          <varlistentry id="MALLOCX_TCACHE">
+            <term><constant>MALLOCX_TCACHE(<parameter>tc</parameter>)
+            </constant></term>
+
+            <listitem><para>Use the thread-specific cache (tcache) specified by
+            the identifier <parameter>tc</parameter>, which must have been
+            acquired via the <link
+            linkend="tcache.create"><mallctl>tcache.create</mallctl></link>
+            mallctl.  This macro does not validate that
+            <parameter>tc</parameter> specifies a valid
+            identifier.</para></listitem>
+          </varlistentry>
+          <varlistentry id="MALLOC_TCACHE_NONE">
+            <term><constant>MALLOCX_TCACHE_NONE</constant></term>
+
+            <listitem><para>Do not use a thread-specific cache (tcache).  Unless
+            <constant>MALLOCX_TCACHE(<parameter>tc</parameter>)</constant> or
+            <constant>MALLOCX_TCACHE_NONE</constant> is specified, an
+            automatically managed tcache will be used under many circumstances.
+            This macro cannot be used in the same <parameter>flags</parameter>
+            argument as
+            <constant>MALLOCX_TCACHE(<parameter>tc</parameter>)</constant>.</para></listitem>
+          </varlistentry>
+          <varlistentry id="MALLOCX_ARENA">
+            <term><constant>MALLOCX_ARENA(<parameter>a</parameter>)
+            </constant></term>
+
+            <listitem><para>Use the arena specified by the index
+            <parameter>a</parameter>.  This macro has no effect for regions that
+            were allocated via an arena other than the one specified.  This
+            macro does not validate that <parameter>a</parameter> specifies an
+            arena index in the valid range.</para></listitem>
+          </varlistentry>
+        </variablelist>
+      </para>
+
+      <para>The <function>mallocx()</function> function allocates at
+      least <parameter>size</parameter> bytes of memory, and returns a pointer
+      to the base address of the allocation.  Behavior is undefined if
+      <parameter>size</parameter> is <constant>0</constant>.</para>
+
+      <para>The <function>rallocx()</function> function resizes the
+      allocation at <parameter>ptr</parameter> to be at least
+      <parameter>size</parameter> bytes, and returns a pointer to the base
+      address of the resulting allocation, which may or may not have moved from
+      its original location.  Behavior is undefined if
+      <parameter>size</parameter> is <constant>0</constant>.</para>
+
+      <para>The <function>xallocx()</function> function resizes the
+      allocation at <parameter>ptr</parameter> in place to be at least
+      <parameter>size</parameter> bytes, and returns the real size of the
+      allocation.  If <parameter>extra</parameter> is non-zero, an attempt is
+      made to resize the allocation to be at least <code
+      language="C">(<parameter>size</parameter> +
+      <parameter>extra</parameter>)</code> bytes, though inability to allocate
+      the extra byte(s) will not by itself result in failure to resize.
+      Behavior is undefined if <parameter>size</parameter> is
+      <constant>0</constant>, or if <code
+      language="C">(<parameter>size</parameter> + <parameter>extra</parameter>
+      &gt; <constant>SIZE_T_MAX</constant>)</code>.</para>
+
+      <para>The <function>sallocx()</function> function returns the
+      real size of the allocation at <parameter>ptr</parameter>.</para>
+
+      <para>The <function>dallocx()</function> function causes the
+      memory referenced by <parameter>ptr</parameter> to be made available for
+      future allocations.</para>
+
+      <para>The <function>sdallocx()</function> function is an
+      extension of <function>dallocx()</function> with a
+      <parameter>size</parameter> parameter to allow the caller to pass in the
+      allocation size as an optimization.  The minimum valid input size is the
+      original requested size of the allocation, and the maximum valid input
+      size is the corresponding value returned by
+      <function>nallocx()</function> or
+      <function>sallocx()</function>.</para>
+
+      <para>The <function>nallocx()</function> function allocates no
+      memory, but it performs the same size computation as the
+      <function>mallocx()</function> function, and returns the real
+      size of the allocation that would result from the equivalent
+      <function>mallocx()</function> function call, or
+      <constant>0</constant> if the inputs exceed the maximum supported size
+      class and/or alignment.  Behavior is undefined if
+      <parameter>size</parameter> is <constant>0</constant>.</para>
+
+      <para>The <function>mallctl()</function> function provides a
+      general interface for introspecting the memory allocator, as well as
+      setting modifiable parameters and triggering actions.  The
+      period-separated <parameter>name</parameter> argument specifies a
+      location in a tree-structured namespace; see the <xref
+      linkend="mallctl_namespace" xrefstyle="template:%t"/> section for
+      documentation on the tree contents.  To read a value, pass a pointer via
+      <parameter>oldp</parameter> to adequate space to contain the value, and a
+      pointer to its length via <parameter>oldlenp</parameter>; otherwise pass
+      <constant>NULL</constant> and <constant>NULL</constant>.  Similarly, to
+      write a value, pass a pointer to the value via
+      <parameter>newp</parameter>, and its length via
+      <parameter>newlen</parameter>; otherwise pass <constant>NULL</constant>
+      and <constant>0</constant>.</para>
+
+      <para>The <function>mallctlnametomib()</function> function
+      provides a way to avoid repeated name lookups for applications that
+      repeatedly query the same portion of the namespace, by translating a name
+      to a <quote>Management Information Base</quote> (MIB) that can be passed
+      repeatedly to <function>mallctlbymib()</function>.  Upon
+      successful return from <function>mallctlnametomib()</function>,
+      <parameter>mibp</parameter> contains an array of
+      <parameter>*miblenp</parameter> integers, where
+      <parameter>*miblenp</parameter> is the lesser of the number of components
+      in <parameter>name</parameter> and the input value of
+      <parameter>*miblenp</parameter>.  Thus it is possible to pass a
+      <parameter>*miblenp</parameter> that is smaller than the number of
+      period-separated name components, which results in a partial MIB that can
+      be used as the basis for constructing a complete MIB.  For name
+      components that are integers (e.g. the 2 in
+      <link
+      linkend="arenas.bin.i.size"><mallctl>arenas.bin.2.size</mallctl></link>),
+      the corresponding MIB component will always be that integer.  Therefore,
+      it is legitimate to construct code like the following: <programlisting
+      language="C"><![CDATA[
+unsigned nbins, i;
+size_t mib[4];
+size_t len, miblen;
+
+len = sizeof(nbins);
+mallctl("arenas.nbins", &nbins, &len, NULL, 0);
+
+miblen = 4;
+mallctlnametomib("arenas.bin.0.size", mib, &miblen);
+for (i = 0; i < nbins; i++) {
+	size_t bin_size;
+
+	mib[2] = i;
+	len = sizeof(bin_size);
+	mallctlbymib(mib, miblen, (void *)&bin_size, &len, NULL, 0);
+	/* Do something with bin_size... */
+}]]></programlisting></para>
+
+      <varlistentry id="malloc_stats_print_opts">
+      </varlistentry>
+      <para>The <function>malloc_stats_print()</function> function writes
+      summary statistics via the <parameter>write_cb</parameter> callback
+      function pointer and <parameter>cbopaque</parameter> data passed to
+      <parameter>write_cb</parameter>, or <function>malloc_message()</function>
+      if <parameter>write_cb</parameter> is <constant>NULL</constant>.  The
+      statistics are presented in human-readable form unless <quote>J</quote> is
+      specified as a character within the <parameter>opts</parameter> string, in
+      which case the statistics are presented in <ulink
+      url="http://www.json.org/">JSON format</ulink>.  This function can be
+      called repeatedly.  General information that never changes during
+      execution can be omitted by specifying <quote>g</quote> as a character
+      within the <parameter>opts</parameter> string.  Note that
+      <function>malloc_stats_print()</function> uses the
+      <function>mallctl*()</function> functions internally, so inconsistent
+      statistics can be reported if multiple threads use these functions
+      simultaneously.  If <option>--enable-stats</option> is specified during
+      configuration, <quote>m</quote>, <quote>d</quote>, and <quote>a</quote>
+      can be specified to omit merged arena, destroyed merged arena, and per
+      arena statistics, respectively; <quote>b</quote> and <quote>l</quote> can
+      be specified to omit per size class statistics for bins and large objects,
+      respectively; <quote>x</quote> can be specified to omit all mutex
+      statistics; <quote>e</quote> can be used to omit extent statistics.
+      Unrecognized characters are silently ignored.  Note that thread caching
+      may prevent some statistics from being completely up to date, since extra
+      locking would be required to merge counters that track thread cache
+      operations.</para>
+
+      <para>The <function>malloc_usable_size()</function> function
+      returns the usable size of the allocation pointed to by
+      <parameter>ptr</parameter>.  The return value may be larger than the size
+      that was requested during allocation.  The
+      <function>malloc_usable_size()</function> function is not a
+      mechanism for in-place <function>realloc()</function>; rather
+      it is provided solely as a tool for introspection purposes.  Any
+      discrepancy between the requested allocation size and the size reported
+      by <function>malloc_usable_size()</function> should not be
+      depended on, since such behavior is entirely implementation-dependent.
+      </para>
+    </refsect2>
+  </refsect1>
+  <refsect1 id="tuning">
+    <title>TUNING</title>
+    <para>Once, when the first call is made to one of the memory allocation
+    routines, the allocator initializes its internals based in part on various
+    options that can be specified at compile- or run-time.</para>
+
+    <para>The string specified via <option>--with-malloc-conf</option>, the
+    string pointed to by the global variable <varname>malloc_conf</varname>, the
+    <quote>name</quote> of the file referenced by the symbolic link named
+    <filename class="symlink">/etc/malloc.conf</filename>, and the value of the
+    environment variable <envar>MALLOC_CONF</envar>, will be interpreted, in
+    that order, from left to right as options.  Note that
+    <varname>malloc_conf</varname> may be read before
+    <function>main()</function> is entered, so the declaration of
+    <varname>malloc_conf</varname> should specify an initializer that contains
+    the final value to be read by jemalloc.  <option>--with-malloc-conf</option>
+    and <varname>malloc_conf</varname> are compile-time mechanisms, whereas
+    <filename class="symlink">/etc/malloc.conf</filename> and
+    <envar>MALLOC_CONF</envar> can be safely set any time prior to program
+    invocation.</para>
+
+    <para>An options string is a comma-separated list of option:value pairs.
+    There is one key corresponding to each <link
+    linkend="opt.abort"><mallctl>opt.*</mallctl></link> mallctl (see the <xref
+    linkend="mallctl_namespace" xrefstyle="template:%t"/> section for options
+    documentation).  For example, <literal>abort:true,narenas:1</literal> sets
+    the <link linkend="opt.abort"><mallctl>opt.abort</mallctl></link> and <link
+    linkend="opt.narenas"><mallctl>opt.narenas</mallctl></link> options.  Some
+    options have boolean values (true/false), others have integer values (base
+    8, 10, or 16, depending on prefix), and yet others have raw string
+    values.</para>
+  </refsect1>
+  <refsect1 id="implementation_notes">
+    <title>IMPLEMENTATION NOTES</title>
+    <para>Traditionally, allocators have used
+    <citerefentry><refentrytitle>sbrk</refentrytitle>
+    <manvolnum>2</manvolnum></citerefentry> to obtain memory, which is
+    suboptimal for several reasons, including race conditions, increased
+    fragmentation, and artificial limitations on maximum usable memory.  If
+    <citerefentry><refentrytitle>sbrk</refentrytitle>
+    <manvolnum>2</manvolnum></citerefentry> is supported by the operating
+    system, this allocator uses both
+    <citerefentry><refentrytitle>mmap</refentrytitle>
+    <manvolnum>2</manvolnum></citerefentry> and
+    <citerefentry><refentrytitle>sbrk</refentrytitle>
+    <manvolnum>2</manvolnum></citerefentry>, in that order of preference;
+    otherwise only <citerefentry><refentrytitle>mmap</refentrytitle>
+    <manvolnum>2</manvolnum></citerefentry> is used.</para>
+
+    <para>This allocator uses multiple arenas in order to reduce lock
+    contention for threaded programs on multi-processor systems.  This works
+    well with regard to threading scalability, but incurs some costs.  There is
+    a small fixed per-arena overhead, and additionally, arenas manage memory
+    completely independently of each other, which means a small fixed increase
+    in overall memory fragmentation.  These overheads are not generally an
+    issue, given the number of arenas normally used.  Note that using
+    substantially more arenas than the default is not likely to improve
+    performance, mainly due to reduced cache performance.  However, it may make
+    sense to reduce the number of arenas if an application does not make much
+    use of the allocation functions.</para>
+
+    <para>In addition to multiple arenas, this allocator supports
+    thread-specific caching, in order to make it possible to completely avoid
+    synchronization for most allocation requests.  Such caching allows very fast
+    allocation in the common case, but it increases memory usage and
+    fragmentation, since a bounded number of objects can remain allocated in
+    each thread cache.</para>
+
+    <para>Memory is conceptually broken into extents.  Extents are always
+    aligned to multiples of the page size.  This alignment makes it possible to
+    find metadata for user objects quickly.  User objects are broken into two
+    categories according to size: small and large.  Contiguous small objects
+    comprise a slab, which resides within a single extent, whereas large objects
+    each have their own extents backing them.</para>
+
+    <para>Small objects are managed in groups by slabs.  Each slab maintains
+    a bitmap to track which regions are in use.  Allocation requests that are no
+    more than half the quantum (8 or 16, depending on architecture) are rounded
+    up to the nearest power of two that is at least <code
+    language="C">sizeof(<type>double</type>)</code>.  All other object size
+    classes are multiples of the quantum, spaced such that there are four size
+    classes for each doubling in size, which limits internal fragmentation to
+    approximately 20% for all but the smallest size classes.  Small size classes
+    are smaller than four times the page size, and large size classes extend
+    from four times the page size up to the largest size class that does not
+    exceed <constant>PTRDIFF_MAX</constant>.</para>
+
+    <para>Allocations are packed tightly together, which can be an issue for
+    multi-threaded applications.  If you need to assure that allocations do not
+    suffer from cacheline sharing, round your allocation requests up to the
+    nearest multiple of the cacheline size, or specify cacheline alignment when
+    allocating.</para>
+
+    <para>The <function>realloc()</function>,
+    <function>rallocx()</function>, and
+    <function>xallocx()</function> functions may resize allocations
+    without moving them under limited circumstances.  Unlike the
+    <function>*allocx()</function> API, the standard API does not
+    officially round up the usable size of an allocation to the nearest size
+    class, so technically it is necessary to call
+    <function>realloc()</function> to grow e.g. a 9-byte allocation to
+    16 bytes, or shrink a 16-byte allocation to 9 bytes.  Growth and shrinkage
+    trivially succeeds in place as long as the pre-size and post-size both round
+    up to the same size class.  No other API guarantees are made regarding
+    in-place resizing, but the current implementation also tries to resize large
+    allocations in place, as long as the pre-size and post-size are both large.
+    For shrinkage to succeed, the extent allocator must support splitting (see
+    <link
+    linkend="arena.i.extent_hooks"><mallctl>arena.&lt;i&gt;.extent_hooks</mallctl></link>).
+    Growth only succeeds if the trailing memory is currently available, and the
+    extent allocator supports merging.</para>
+
+    <para>Assuming 4 KiB pages and a 16-byte quantum on a 64-bit system, the
+    size classes in each category are as shown in <xref linkend="size_classes"
+    xrefstyle="template:Table %n"/>.</para>
+
+    <table xml:id="size_classes" frame="all">
+      <title>Size classes</title>
+      <tgroup cols="3" colsep="1" rowsep="1">
+      <colspec colname="c1" align="left"/>
+      <colspec colname="c2" align="right"/>
+      <colspec colname="c3" align="left"/>
+      <thead>
+        <row>
+          <entry>Category</entry>
+          <entry>Spacing</entry>
+          <entry>Size</entry>
+        </row>
+      </thead>
+      <tbody>
+        <row>
+          <entry morerows="8">Small</entry>
+          <entry>lg</entry>
+          <entry>[8]</entry>
+        </row>
+        <row>
+          <entry>16</entry>
+          <entry>[16, 32, 48, 64, 80, 96, 112, 128]</entry>
+        </row>
+        <row>
+          <entry>32</entry>
+          <entry>[160, 192, 224, 256]</entry>
+        </row>
+        <row>
+          <entry>64</entry>
+          <entry>[320, 384, 448, 512]</entry>
+        </row>
+        <row>
+          <entry>128</entry>
+          <entry>[640, 768, 896, 1024]</entry>
+        </row>
+        <row>
+          <entry>256</entry>
+          <entry>[1280, 1536, 1792, 2048]</entry>
+        </row>
+        <row>
+          <entry>512</entry>
+          <entry>[2560, 3072, 3584, 4096]</entry>
+        </row>
+        <row>
+          <entry>1 KiB</entry>
+          <entry>[5 KiB, 6 KiB, 7 KiB, 8 KiB]</entry>
+        </row>
+        <row>
+          <entry>2 KiB</entry>
+          <entry>[10 KiB, 12 KiB, 14 KiB]</entry>
+        </row>
+        <row>
+          <entry morerows="15">Large</entry>
+          <entry>2 KiB</entry>
+          <entry>[16 KiB]</entry>
+        </row>
+        <row>
+          <entry>4 KiB</entry>
+          <entry>[20 KiB, 24 KiB, 28 KiB, 32 KiB]</entry>
+        </row>
+        <row>
+          <entry>8 KiB</entry>
+          <entry>[40 KiB, 48 KiB, 56 KiB, 64 KiB]</entry>
+        </row>
+        <row>
+          <entry>16 KiB</entry>
+          <entry>[80 KiB, 96 KiB, 112 KiB, 128 KiB]</entry>
+        </row>
+        <row>
+          <entry>32 KiB</entry>
+          <entry>[160 KiB, 192 KiB, 224 KiB, 256 KiB]</entry>
+        </row>
+        <row>
+          <entry>64 KiB</entry>
+          <entry>[320 KiB, 384 KiB, 448 KiB, 512 KiB]</entry>
+        </row>
+        <row>
+          <entry>128 KiB</entry>
+          <entry>[640 KiB, 768 KiB, 896 KiB, 1 MiB]</entry>
+        </row>
+        <row>
+          <entry>256 KiB</entry>
+          <entry>[1280 KiB, 1536 KiB, 1792 KiB, 2 MiB]</entry>
+        </row>
+        <row>
+          <entry>512 KiB</entry>
+          <entry>[2560 KiB, 3 MiB, 3584 KiB, 4 MiB]</entry>
+        </row>
+        <row>
+          <entry>1 MiB</entry>
+          <entry>[5 MiB, 6 MiB, 7 MiB, 8 MiB]</entry>
+        </row>
+        <row>
+          <entry>2 MiB</entry>
+          <entry>[10 MiB, 12 MiB, 14 MiB, 16 MiB]</entry>
+        </row>
+        <row>
+          <entry>4 MiB</entry>
+          <entry>[20 MiB, 24 MiB, 28 MiB, 32 MiB]</entry>
+        </row>
+        <row>
+          <entry>8 MiB</entry>
+          <entry>[40 MiB, 48 MiB, 56 MiB, 64 MiB]</entry>
+        </row>
+        <row>
+          <entry>...</entry>
+          <entry>...</entry>
+        </row>
+        <row>
+          <entry>512 PiB</entry>
+          <entry>[2560 PiB, 3 EiB, 3584 PiB, 4 EiB]</entry>
+        </row>
+        <row>
+          <entry>1 EiB</entry>
+          <entry>[5 EiB, 6 EiB, 7 EiB]</entry>
+        </row>
+      </tbody>
+      </tgroup>
+    </table>
+  </refsect1>
+  <refsect1 id="mallctl_namespace">
+    <title>MALLCTL NAMESPACE</title>
+    <para>The following names are defined in the namespace accessible via the
+    <function>mallctl*()</function> functions.  Value types are specified in
+    parentheses, their readable/writable statuses are encoded as
+    <literal>rw</literal>, <literal>r-</literal>, <literal>-w</literal>, or
+    <literal>--</literal>, and required build configuration flags follow, if
+    any.  A name element encoded as <literal>&lt;i&gt;</literal> or
+    <literal>&lt;j&gt;</literal> indicates an integer component, where the
+    integer varies from 0 to some upper value that must be determined via
+    introspection.  In the case of <mallctl>stats.arenas.&lt;i&gt;.*</mallctl>
+    and <mallctl>arena.&lt;i&gt;.{initialized,purge,decay,dss}</mallctl>,
+    <literal>&lt;i&gt;</literal> equal to
+    <constant>MALLCTL_ARENAS_ALL</constant> can be used to operate on all arenas
+    or access the summation of statistics from all arenas; similarly
+    <literal>&lt;i&gt;</literal> equal to
+    <constant>MALLCTL_ARENAS_DESTROYED</constant> can be used to access the
+    summation of statistics from all destroyed arenas.  These constants can be
+    utilized either via <function>mallctlnametomib()</function> followed by
+    <function>mallctlbymib()</function>, or via code such as the following:
+    <programlisting language="C"><![CDATA[
+#define STRINGIFY_HELPER(x) #x
+#define STRINGIFY(x) STRINGIFY_HELPER(x)
+
+mallctl("arena." STRINGIFY(MALLCTL_ARENAS_ALL) ".decay",
+    NULL, NULL, NULL, 0);]]></programlisting>
+    Take special note of the <link
+    linkend="epoch"><mallctl>epoch</mallctl></link> mallctl, which controls
+    refreshing of cached dynamic statistics.</para>
+
+    <variablelist>
+      <varlistentry id="version">
+        <term>
+          <mallctl>version</mallctl>
+          (<type>const char *</type>)
+          <literal>r-</literal>
+        </term>
+        <listitem><para>Return the jemalloc version string.</para></listitem>
+      </varlistentry>
+
+      <varlistentry id="epoch">
+        <term>
+          <mallctl>epoch</mallctl>
+          (<type>uint64_t</type>)
+          <literal>rw</literal>
+        </term>
+        <listitem><para>If a value is passed in, refresh the data from which
+        the <function>mallctl*()</function> functions report values,
+        and increment the epoch.  Return the current epoch.  This is useful for
+        detecting whether another thread caused a refresh.</para></listitem>
+      </varlistentry>
+
+      <varlistentry id="background_thread">
+        <term>
+          <mallctl>background_thread</mallctl>
+          (<type>bool</type>)
+          <literal>rw</literal>
+        </term>
+        <listitem><para>Enable/disable internal background worker threads.  When
+        set to true, background threads are created on demand (the number of
+        background threads will be no more than the number of CPUs or active
+        arenas).  Threads run periodically, and handle <link
+        linkend="arena.i.decay">purging</link> asynchronously.  When switching
+        off, background threads are terminated synchronously.  Note that after
+        <citerefentry><refentrytitle>fork</refentrytitle><manvolnum>2</manvolnum></citerefentry>
+        function, the state in the child process will be disabled regardless
+        the state in parent process. See <link
+        linkend="stats.background_thread.num_threads"><mallctl>stats.background_thread</mallctl></link>
+        for related stats.  <link
+        linkend="opt.background_thread"><mallctl>opt.background_thread</mallctl></link>
+        can be used to set the default option.  This option is only available on
+        selected pthread-based platforms.</para></listitem>
+      </varlistentry>
+
+      <varlistentry id="max_background_threads">
+        <term>
+          <mallctl>max_background_threads</mallctl>
+          (<type>size_t</type>)
+          <literal>rw</literal>
+        </term>
+        <listitem><para>Maximum number of background worker threads that will
+        be created.  This value is capped at <link
+        linkend="opt.max_background_threads"><mallctl>opt.max_background_threads</mallctl></link> at
+        startup.</para></listitem>
+      </varlistentry>
+
+      <varlistentry id="config.cache_oblivious">
+        <term>
+          <mallctl>config.cache_oblivious</mallctl>
+          (<type>bool</type>)
+          <literal>r-</literal>
+        </term>
+        <listitem><para><option>--enable-cache-oblivious</option> was specified
+        during build configuration.</para></listitem>
+      </varlistentry>
+
+      <varlistentry id="config.debug">
+        <term>
+          <mallctl>config.debug</mallctl>
+          (<type>bool</type>)
+          <literal>r-</literal>
+        </term>
+        <listitem><para><option>--enable-debug</option> was specified during
+        build configuration.</para></listitem>
+      </varlistentry>
+
+      <varlistentry id="config.fill">
+        <term>
+          <mallctl>config.fill</mallctl>
+          (<type>bool</type>)
+          <literal>r-</literal>
+        </term>
+        <listitem><para><option>--enable-fill</option> was specified during
+        build configuration.</para></listitem>
+      </varlistentry>
+
+      <varlistentry id="config.lazy_lock">
+        <term>
+          <mallctl>config.lazy_lock</mallctl>
+          (<type>bool</type>)
+          <literal>r-</literal>
+        </term>
+        <listitem><para><option>--enable-lazy-lock</option> was specified
+        during build configuration.</para></listitem>
+      </varlistentry>
+
+      <varlistentry id="config.malloc_conf">
+        <term>
+          <mallctl>config.malloc_conf</mallctl>
+          (<type>const char *</type>)
+          <literal>r-</literal>
+        </term>
+        <listitem><para>Embedded configure-time-specified run-time options
+        string, empty unless <option>--with-malloc-conf</option> was specified
+        during build configuration.</para></listitem>
+      </varlistentry>
+
+      <varlistentry id="config.prof">
+        <term>
+          <mallctl>config.prof</mallctl>
+          (<type>bool</type>)
+          <literal>r-</literal>
+        </term>
+        <listitem><para><option>--enable-prof</option> was specified during
+        build configuration.</para></listitem>
+      </varlistentry>
+
+      <varlistentry id="config.prof_libgcc">
+        <term>
+          <mallctl>config.prof_libgcc</mallctl>
+          (<type>bool</type>)
+          <literal>r-</literal>
+        </term>
+        <listitem><para><option>--disable-prof-libgcc</option> was not
+        specified during build configuration.</para></listitem>
+      </varlistentry>
+
+      <varlistentry id="config.prof_libunwind">
+        <term>
+          <mallctl>config.prof_libunwind</mallctl>
+          (<type>bool</type>)
+          <literal>r-</literal>
+        </term>
+        <listitem><para><option>--enable-prof-libunwind</option> was specified
+        during build configuration.</para></listitem>
+      </varlistentry>
+
+      <varlistentry id="config.stats">
+        <term>
+          <mallctl>config.stats</mallctl>
+          (<type>bool</type>)
+          <literal>r-</literal>
+        </term>
+        <listitem><para><option>--enable-stats</option> was specified during
+        build configuration.</para></listitem>
+      </varlistentry>
+
+
+      <varlistentry id="config.utrace">
+        <term>
+          <mallctl>config.utrace</mallctl>
+          (<type>bool</type>)
+          <literal>r-</literal>
+        </term>
+        <listitem><para><option>--enable-utrace</option> was specified during
+        build configuration.</para></listitem>
+      </varlistentry>
+
+      <varlistentry id="config.xmalloc">
+        <term>
+          <mallctl>config.xmalloc</mallctl>
+          (<type>bool</type>)
+          <literal>r-</literal>
+        </term>
+        <listitem><para><option>--enable-xmalloc</option> was specified during
+        build configuration.</para></listitem>
+      </varlistentry>
+
+      <varlistentry id="opt.abort">
+        <term>
+          <mallctl>opt.abort</mallctl>
+          (<type>bool</type>)
+          <literal>r-</literal>
+        </term>
+        <listitem><para>Abort-on-warning enabled/disabled.  If true, most
+        warnings are fatal.  Note that runtime option warnings are not included
+        (see <link
+        linkend="opt.abort_conf"><mallctl>opt.abort_conf</mallctl></link> for
+        that). The process will call
+        <citerefentry><refentrytitle>abort</refentrytitle>
+        <manvolnum>3</manvolnum></citerefentry> in these cases.  This option is
+        disabled by default unless <option>--enable-debug</option> is
+        specified during configuration, in which case it is enabled by default.
+        </para></listitem>
+      </varlistentry>
+
+      <varlistentry id="opt.confirm_conf">
+        <term>
+          <mallctl>opt.confirm_conf</mallctl>
+          (<type>bool</type>)
+          <literal>r-</literal>
+        </term>
+	<listitem><para>Confirm-runtime-options-when-program-starts
+	enabled/disabled.  If true, the string specified via
+	<option>--with-malloc-conf</option>, the string pointed to by the
+	global variable <varname>malloc_conf</varname>, the <quote>name</quote>
+	of the file referenced by the symbolic link named
+	<filename class="symlink">/etc/malloc.conf</filename>, and the value of
+	the environment variable <envar>MALLOC_CONF</envar>, will be printed in
+	order.  Then, each option being set will be individually printed.  This
+	option is disabled by default.</para></listitem>
+      </varlistentry>
+
+      <varlistentry id="opt.abort_conf">
+        <term>
+          <mallctl>opt.abort_conf</mallctl>
+          (<type>bool</type>)
+          <literal>r-</literal>
+        </term>
+        <listitem><para>Abort-on-invalid-configuration enabled/disabled.  If
+        true, invalid runtime options are fatal.  The process will call
+        <citerefentry><refentrytitle>abort</refentrytitle>
+        <manvolnum>3</manvolnum></citerefentry> in these cases.  This option is
+        disabled by default unless <option>--enable-debug</option> is
+        specified during configuration, in which case it is enabled by default.
+        </para></listitem>
+      </varlistentry>
+
+      <varlistentry id="opt.cache_oblivious">
+        <term>
+          <mallctl>opt.cache_oblivious</mallctl>
+          (<type>bool</type>)
+          <literal>r-</literal>
+        </term>
+        <listitem><para>Enable / Disable cache-oblivious large allocation
+        alignment, for large requests with no alignment constraints.  If this
+        feature is disabled, all large allocations are page-aligned as an
+        implementation artifact, which can severely harm CPU cache utilization.
+        However, the cache-oblivious layout comes at the cost of one extra page
+        per large allocation, which in the most extreme case increases physical
+        memory usage for the 16 KiB size class to 20 KiB. This option is enabled
+        by default.</para></listitem>
+      </varlistentry>
+
+      <varlistentry id="opt.metadata_thp">
+        <term>
+          <mallctl>opt.metadata_thp</mallctl>
+          (<type>const char *</type>)
+          <literal>r-</literal>
+        </term>
+        <listitem><para>Controls whether to allow jemalloc to use transparent
+        huge page (THP) for internal metadata (see <link
+        linkend="stats.metadata">stats.metadata</link>).  <quote>always</quote>
+        allows such usage.  <quote>auto</quote> uses no THP initially, but may
+        begin to do so when metadata usage reaches certain level.  The default
+        is <quote>disabled</quote>.</para></listitem>
+      </varlistentry>
+
+      <varlistentry id="opt.trust_madvise">
+        <term>
+          <mallctl>opt.trust_madvise</mallctl>
+          (<type>bool</type>)
+          <literal>r-</literal>
+        </term>
+        <listitem><para>If true, do not perform runtime check for MADV_DONTNEED,
+        to check that it actually zeros pages.  The default is disabled on Linux
+        and enabled elsewhere.</para></listitem>
+      </varlistentry>
+
+      <varlistentry id="opt.retain">
+        <term>
+          <mallctl>opt.retain</mallctl>
+          (<type>bool</type>)
+          <literal>r-</literal>
+        </term>
+        <listitem><para>If true, retain unused virtual memory for later reuse
+        rather than discarding it by calling
+        <citerefentry><refentrytitle>munmap</refentrytitle>
+        <manvolnum>2</manvolnum></citerefentry> or equivalent (see <link
+        linkend="stats.retained">stats.retained</link> for related details).
+        It also makes jemalloc use <citerefentry>
+        <refentrytitle>mmap</refentrytitle><manvolnum>2</manvolnum>
+        </citerefentry> or equivalent in a more greedy way, mapping larger
+        chunks in one go.  This option is disabled by default unless discarding
+        virtual memory is known to trigger platform-specific performance
+        problems, namely 1) for [64-bit] Linux, which has a quirk in its virtual
+        memory allocation algorithm that causes semi-permanent VM map holes
+        under normal jemalloc operation; and 2) for [64-bit] Windows, which
+        disallows split / merged regions with
+        <parameter><constant>MEM_RELEASE</constant></parameter>.  Although the
+        same issues may present on 32-bit platforms as well, retaining virtual
+        memory for 32-bit Linux and Windows is disabled by default due to the
+        practical possibility of address space exhaustion.  </para></listitem>
+      </varlistentry>
+
+      <varlistentry id="opt.dss">
+        <term>
+          <mallctl>opt.dss</mallctl>
+          (<type>const char *</type>)
+          <literal>r-</literal>
+        </term>
+        <listitem><para>dss (<citerefentry><refentrytitle>sbrk</refentrytitle>
+        <manvolnum>2</manvolnum></citerefentry>) allocation precedence as
+        related to <citerefentry><refentrytitle>mmap</refentrytitle>
+        <manvolnum>2</manvolnum></citerefentry> allocation.  The following
+        settings are supported if
+        <citerefentry><refentrytitle>sbrk</refentrytitle>
+        <manvolnum>2</manvolnum></citerefentry> is supported by the operating
+        system: <quote>disabled</quote>, <quote>primary</quote>, and
+        <quote>secondary</quote>; otherwise only <quote>disabled</quote> is
+        supported.  The default is <quote>secondary</quote> if
+        <citerefentry><refentrytitle>sbrk</refentrytitle>
+        <manvolnum>2</manvolnum></citerefentry> is supported by the operating
+        system; <quote>disabled</quote> otherwise.
+        </para></listitem>
+      </varlistentry>
+
+      <varlistentry id="opt.narenas">
+        <term>
+          <mallctl>opt.narenas</mallctl>
+          (<type>unsigned</type>)
+          <literal>r-</literal>
+        </term>
+        <listitem><para>Maximum number of arenas to use for automatic
+        multiplexing of threads and arenas.  The default is four times the
+        number of CPUs, or one if there is a single CPU.</para></listitem>
+      </varlistentry>
+
+      <varlistentry id="opt.oversize_threshold">
+        <term>
+          <mallctl>opt.oversize_threshold</mallctl>
+          (<type>size_t</type>)
+          <literal>r-</literal>
+        </term>
+        <listitem><para>The threshold in bytes of which requests are considered
+        oversize.  Allocation requests with greater sizes are fulfilled from a
+        dedicated arena (automatically managed, however not within
+        <literal>narenas</literal>), in order to reduce fragmentation by not
+        mixing huge allocations with small ones.  In addition, the decay API
+        guarantees on the extents greater than the specified threshold may be
+        overridden.  Note that requests with arena index specified via
+        <constant>MALLOCX_ARENA</constant>, or threads associated with explicit
+        arenas will not be considered.  The default threshold is 8MiB.  Values
+        not within large size classes disables this feature.</para></listitem>
+      </varlistentry>
+
+      <varlistentry id="opt.percpu_arena">
+        <term>
+          <mallctl>opt.percpu_arena</mallctl>
+          (<type>const char *</type>)
+          <literal>r-</literal>
+        </term>
+        <listitem><para>Per CPU arena mode.  Use the <quote>percpu</quote>
+        setting to enable this feature, which uses number of CPUs to determine
+        number of arenas, and bind threads to arenas dynamically based on the
+        CPU the thread runs on currently.  <quote>phycpu</quote> setting uses
+        one arena per physical CPU, which means the two hyper threads on the
+        same CPU share one arena.  Note that no runtime checking regarding the
+        availability of hyper threading is done at the moment.  When set to
+        <quote>disabled</quote>, narenas and thread to arena association will
+        not be impacted by this option.  The default is <quote>disabled</quote>.
+        </para></listitem>
+      </varlistentry>
+
+      <varlistentry id="opt.background_thread">
+        <term>
+          <mallctl>opt.background_thread</mallctl>
+          (<type>bool</type>)
+          <literal>r-</literal>
+        </term>
+        <listitem><para>Internal background worker threads enabled/disabled.
+        Because of potential circular dependencies, enabling background thread
+        using this option may cause crash or deadlock during initialization. For
+        a reliable way to use this feature, see <link
+        linkend="background_thread">background_thread</link> for dynamic control
+        options and details.  This option is disabled by
+        default.</para></listitem>
+      </varlistentry>
+
+      <varlistentry id="opt.max_background_threads">
+        <term>
+          <mallctl>opt.max_background_threads</mallctl>
+          (<type>size_t</type>)
+          <literal>r-</literal>
+        </term>
+        <listitem><para>Maximum number of background threads that will be created
+        if <link linkend="background_thread">background_thread</link> is set.
+        Defaults to number of cpus.</para></listitem>
+      </varlistentry>
+
+      <varlistentry id="opt.dirty_decay_ms">
+        <term>
+          <mallctl>opt.dirty_decay_ms</mallctl>
+          (<type>ssize_t</type>)
+          <literal>r-</literal>
+        </term>
+        <listitem><para>Approximate time in milliseconds from the creation of a
+        set of unused dirty pages until an equivalent set of unused dirty pages
+        is purged (i.e. converted to muzzy via e.g.
+        <function>madvise(<parameter>...</parameter><parameter><constant>MADV_FREE</constant></parameter>)</function>
+        if supported by the operating system, or converted to clean otherwise)
+        and/or reused.  Dirty pages are defined as previously having been
+        potentially written to by the application, and therefore consuming
+        physical memory, yet having no current use.  The pages are incrementally
+        purged according to a sigmoidal decay curve that starts and ends with
+        zero purge rate.  A decay time of 0 causes all unused dirty pages to be
+        purged immediately upon creation.  A decay time of -1 disables purging.
+        The default decay time is 10 seconds.  See <link
+        linkend="arenas.dirty_decay_ms"><mallctl>arenas.dirty_decay_ms</mallctl></link>
+        and <link
+        linkend="arena.i.dirty_decay_ms"><mallctl>arena.&lt;i&gt;.dirty_decay_ms</mallctl></link>
+        for related dynamic control options.  See <link
+        linkend="opt.muzzy_decay_ms"><mallctl>opt.muzzy_decay_ms</mallctl></link>
+        for a description of muzzy pages.for a description of muzzy pages.  Note
+        that when the <link
+        linkend="opt.oversize_threshold"><mallctl>oversize_threshold</mallctl></link>
+        feature is enabled, the arenas reserved for oversize requests may have
+        its own default decay settings.</para></listitem>
+      </varlistentry>
+
+      <varlistentry id="opt.muzzy_decay_ms">
+        <term>
+          <mallctl>opt.muzzy_decay_ms</mallctl>
+          (<type>ssize_t</type>)
+          <literal>r-</literal>
+        </term>
+        <listitem><para>Approximate time in milliseconds from the creation of a
+        set of unused muzzy pages until an equivalent set of unused muzzy pages
+        is purged (i.e. converted to clean) and/or reused.  Muzzy pages are
+        defined as previously having been unused dirty pages that were
+        subsequently purged in a manner that left them subject to the
+        reclamation whims of the operating system (e.g.
+        <function>madvise(<parameter>...</parameter><parameter><constant>MADV_FREE</constant></parameter>)</function>),
+        and therefore in an indeterminate state.  The pages are incrementally
+        purged according to a sigmoidal decay curve that starts and ends with
+        zero purge rate.  A decay time of 0 causes all unused muzzy pages to be
+        purged immediately upon creation.  A decay time of -1 disables purging.
+        The default decay time is 10 seconds.  See <link
+        linkend="arenas.muzzy_decay_ms"><mallctl>arenas.muzzy_decay_ms</mallctl></link>
+        and <link
+        linkend="arena.i.muzzy_decay_ms"><mallctl>arena.&lt;i&gt;.muzzy_decay_ms</mallctl></link>
+        for related dynamic control options.</para></listitem>
+      </varlistentry>
+
+      <varlistentry id="opt.lg_extent_max_active_fit">
+        <term>
+          <mallctl>opt.lg_extent_max_active_fit</mallctl>
+          (<type>size_t</type>)
+          <literal>r-</literal>
+        </term>
+        <listitem><para>When reusing dirty extents, this determines the (log
+        base 2 of the) maximum ratio between the size of the active extent
+        selected (to split off from) and the size of the requested allocation.
+        This prevents the splitting of large active extents for smaller
+        allocations, which can reduce fragmentation over the long run
+        (especially for non-active extents).  Lower value may reduce
+        fragmentation, at the cost of extra active extents.  The default value
+        is 6, which gives a maximum ratio of 64 (2^6).</para></listitem>
+      </varlistentry>
+
+      <varlistentry id="opt.stats_print">
+        <term>
+          <mallctl>opt.stats_print</mallctl>
+          (<type>bool</type>)
+          <literal>r-</literal>
+        </term>
+        <listitem><para>Enable/disable statistics printing at exit.  If
+        enabled, the <function>malloc_stats_print()</function>
+        function is called at program exit via an
+        <citerefentry><refentrytitle>atexit</refentrytitle>
+        <manvolnum>3</manvolnum></citerefentry> function.  <link
+        linkend="opt.stats_print_opts"><mallctl>opt.stats_print_opts</mallctl></link>
+        can be combined to specify output options. If
+        <option>--enable-stats</option> is specified during configuration, this
+        has the potential to cause deadlock for a multi-threaded process that
+        exits while one or more threads are executing in the memory allocation
+        functions.  Furthermore, <function>atexit()</function> may
+        allocate memory during application initialization and then deadlock
+        internally when jemalloc in turn calls
+        <function>atexit()</function>, so this option is not
+        universally usable (though the application can register its own
+        <function>atexit()</function> function with equivalent
+        functionality).  Therefore, this option should only be used with care;
+        it is primarily intended as a performance tuning aid during application
+        development.  This option is disabled by default.</para></listitem>
+      </varlistentry>
+
+      <varlistentry id="opt.stats_print_opts">
+        <term>
+          <mallctl>opt.stats_print_opts</mallctl>
+          (<type>const char *</type>)
+          <literal>r-</literal>
+        </term>
+        <listitem><para>Options (the <parameter>opts</parameter> string) to pass
+        to the <function>malloc_stats_print()</function> at exit (enabled
+        through <link
+        linkend="opt.stats_print"><mallctl>opt.stats_print</mallctl></link>). See
+        available options in <link
+        linkend="malloc_stats_print_opts"><function>malloc_stats_print()</function></link>.
+        Has no effect unless <link
+        linkend="opt.stats_print"><mallctl>opt.stats_print</mallctl></link> is
+        enabled.  The default is <quote></quote>.</para></listitem>
+      </varlistentry>
+
+      <varlistentry id="opt.stats_interval">
+        <term>
+          <mallctl>opt.stats_interval</mallctl>
+          (<type>int64_t</type>)
+          <literal>r-</literal>
+        </term>
+        <listitem><para>Average interval between statistics outputs, as measured
+        in bytes of allocation activity.  The actual interval may be sporadic
+        because decentralized event counters are used to avoid synchronization
+        bottlenecks.  The output may be triggered on any thread, which then
+        calls <function>malloc_stats_print()</function>.  <link
+        linkend="opt.stats_interval_opts"><mallctl>opt.stats_interval_opts</mallctl></link>
+        can be combined to specify output options.  By default,
+        interval-triggered stats output is disabled (encoded as
+        -1).</para></listitem>
+      </varlistentry>
+
+      <varlistentry id="opt.stats_interval_opts">
+        <term>
+          <mallctl>opt.stats_interval_opts</mallctl>
+          (<type>const char *</type>)
+          <literal>r-</literal>
+        </term>
+        <listitem><para>Options (the <parameter>opts</parameter> string) to pass
+        to the <function>malloc_stats_print()</function> for interval based
+	statistics printing (enabled
+        through <link
+        linkend="opt.stats_interval"><mallctl>opt.stats_interval</mallctl></link>). See
+        available options in <link
+        linkend="malloc_stats_print_opts"><function>malloc_stats_print()</function></link>.
+        Has no effect unless <link
+        linkend="opt.stats_interval"><mallctl>opt.stats_interval</mallctl></link> is
+        enabled.  The default is <quote></quote>.</para></listitem>
+      </varlistentry>
+
+      <varlistentry id="opt.junk">
+        <term>
+          <mallctl>opt.junk</mallctl>
+          (<type>const char *</type>)
+          <literal>r-</literal>
+          [<option>--enable-fill</option>]
+        </term>
+        <listitem><para>Junk filling.  If set to <quote>alloc</quote>, each byte
+        of uninitialized allocated memory will be initialized to
+        <literal>0xa5</literal>.  If set to <quote>free</quote>, all deallocated
+        memory will be initialized to <literal>0x5a</literal>.  If set to
+        <quote>true</quote>, both allocated and deallocated memory will be
+        initialized, and if set to <quote>false</quote>, junk filling be
+        disabled entirely.  This is intended for debugging and will impact
+        performance negatively.  This option is <quote>false</quote> by default
+        unless <option>--enable-debug</option> is specified during
+        configuration, in which case it is <quote>true</quote> by
+        default.</para></listitem>
+      </varlistentry>
+
+      <varlistentry id="opt.zero">
+        <term>
+          <mallctl>opt.zero</mallctl>
+          (<type>bool</type>)
+          <literal>r-</literal>
+          [<option>--enable-fill</option>]
+        </term>
+        <listitem><para>Zero filling enabled/disabled.  If enabled, each byte
+        of uninitialized allocated memory will be initialized to 0.  Note that
+        this initialization only happens once for each byte, so
+        <function>realloc()</function> and
+        <function>rallocx()</function> calls do not zero memory that
+        was previously allocated.  This is intended for debugging and will
+        impact performance negatively.  This option is disabled by default.
+        </para></listitem>
+      </varlistentry>
+
+      <varlistentry id="opt.utrace">
+        <term>
+          <mallctl>opt.utrace</mallctl>
+          (<type>bool</type>)
+          <literal>r-</literal>
+          [<option>--enable-utrace</option>]
+        </term>
+        <listitem><para>Allocation tracing based on
+        <citerefentry><refentrytitle>utrace</refentrytitle>
+        <manvolnum>2</manvolnum></citerefentry> enabled/disabled.  This option
+        is disabled by default.</para></listitem>
+      </varlistentry>
+
+      <varlistentry id="opt.xmalloc">
+        <term>
+          <mallctl>opt.xmalloc</mallctl>
+          (<type>bool</type>)
+          <literal>r-</literal>
+          [<option>--enable-xmalloc</option>]
+        </term>
+        <listitem><para>Abort-on-out-of-memory enabled/disabled.  If enabled,
+        rather than returning failure for any allocation function, display a
+        diagnostic message on <constant>STDERR_FILENO</constant> and cause the
+        program to drop core (using
+        <citerefentry><refentrytitle>abort</refentrytitle>
+        <manvolnum>3</manvolnum></citerefentry>).  If an application is
+        designed to depend on this behavior, set the option at compile time by
+        including the following in the source code:
+        <programlisting language="C"><![CDATA[
+malloc_conf = "xmalloc:true";]]></programlisting>
+        This option is disabled by default.</para></listitem>
+      </varlistentry>
+
+      <varlistentry id="opt.tcache">
+        <term>
+          <mallctl>opt.tcache</mallctl>
+          (<type>bool</type>)
+          <literal>r-</literal>
+        </term>
+        <listitem><para>Thread-specific caching (tcache) enabled/disabled.  When
+        there are multiple threads, each thread uses a tcache for objects up to
+        a certain size.  Thread-specific caching allows many allocations to be
+        satisfied without performing any thread synchronization, at the cost of
+        increased memory use.  See the <link
+        linkend="opt.tcache_max"><mallctl>opt.tcache_max</mallctl></link>
+        option for related tuning information.  This option is enabled by
+        default.</para></listitem>
+      </varlistentry>
+
+      <varlistentry id="opt.tcache_max">
+        <term>
+          <mallctl>opt.tcache_max</mallctl>
+          (<type>size_t</type>)
+          <literal>r-</literal>
+        </term>
+        <listitem><para>Maximum size class to cache in the thread-specific cache
+        (tcache).  At a minimum, the first size class is cached; and at a
+        maximum, size classes up to 8 MiB can be cached.  The default maximum is
+        32 KiB (2^15).  As a convenience, this may also be set by specifying
+        lg_tcache_max, which will be taken to be the base-2 logarithm of the
+        setting of tcache_max.</para></listitem>
+      </varlistentry>
+
+      <varlistentry id="opt.thp">
+        <term>
+          <mallctl>opt.thp</mallctl>
+          (<type>const char *</type>)
+          <literal>r-</literal>
+        </term>
+        <listitem><para>Transparent hugepage (THP) mode. Settings "always",
+        "never" and "default" are available if THP is supported by the operating
+        system.  The "always" setting enables transparent hugepage for all user
+        memory mappings with
+        <parameter><constant>MADV_HUGEPAGE</constant></parameter>; "never"
+        ensures no transparent hugepage with
+        <parameter><constant>MADV_NOHUGEPAGE</constant></parameter>; the default
+        setting "default" makes no changes.  Note that: this option does not
+        affect THP for jemalloc internal metadata (see <link
+        linkend="opt.metadata_thp"><mallctl>opt.metadata_thp</mallctl></link>);
+        in addition, for arenas with customized <link
+        linkend="arena.i.extent_hooks"><mallctl>extent_hooks</mallctl></link>,
+        this option is bypassed as it is implemented as part of the default
+        extent hooks.</para></listitem>
+      </varlistentry>
+
+      <varlistentry id="opt.prof">
+        <term>
+          <mallctl>opt.prof</mallctl>
+          (<type>bool</type>)
+          <literal>r-</literal>
+          [<option>--enable-prof</option>]
+        </term>
+        <listitem><para>Memory profiling enabled/disabled.  If enabled, profile
+        memory allocation activity.  See the <link
+        linkend="opt.prof_active"><mallctl>opt.prof_active</mallctl></link>
+        option for on-the-fly activation/deactivation.  See the <link
+        linkend="opt.lg_prof_sample"><mallctl>opt.lg_prof_sample</mallctl></link>
+        option for probabilistic sampling control.  See the <link
+        linkend="opt.prof_accum"><mallctl>opt.prof_accum</mallctl></link>
+        option for control of cumulative sample reporting.  See the <link
+        linkend="opt.lg_prof_interval"><mallctl>opt.lg_prof_interval</mallctl></link>
+        option for information on interval-triggered profile dumping, the <link
+        linkend="opt.prof_gdump"><mallctl>opt.prof_gdump</mallctl></link>
+        option for information on high-water-triggered profile dumping, and the
+        <link linkend="opt.prof_final"><mallctl>opt.prof_final</mallctl></link>
+        option for final profile dumping.  Profile output is compatible with
+        the <command>jeprof</command> command, which is based on the
+        <command>pprof</command> that is developed as part of the <ulink
+        url="http://code.google.com/p/gperftools/">gperftools
+        package</ulink>.  See <link linkend="heap_profile_format">HEAP PROFILE
+        FORMAT</link> for heap profile format documentation.</para></listitem>
+      </varlistentry>
+
+      <varlistentry id="opt.prof_prefix">
+        <term>
+          <mallctl>opt.prof_prefix</mallctl>
+          (<type>const char *</type>)
+          <literal>r-</literal>
+          [<option>--enable-prof</option>]
+        </term>
+        <listitem><para>Filename prefix for profile dumps.  If the prefix is
+        set to the empty string, no automatic dumps will occur; this is
+        primarily useful for disabling the automatic final heap dump (which
+        also disables leak reporting, if enabled).  The default prefix is
+        <filename>jeprof</filename>.  This prefix value can be overridden by
+        <link linkend="prof.prefix"><mallctl>prof.prefix</mallctl></link>.
+        </para></listitem>
+      </varlistentry>
+
+      <varlistentry id="opt.prof_active">
+        <term>
+          <mallctl>opt.prof_active</mallctl>
+          (<type>bool</type>)
+          <literal>r-</literal>
+          [<option>--enable-prof</option>]
+        </term>
+        <listitem><para>Profiling activated/deactivated.  This is a secondary
+        control mechanism that makes it possible to start the application with
+        profiling enabled (see the <link
+        linkend="opt.prof"><mallctl>opt.prof</mallctl></link> option) but
+        inactive, then toggle profiling at any time during program execution
+        with the <link
+        linkend="prof.active"><mallctl>prof.active</mallctl></link> mallctl.
+        This option is enabled by default.</para></listitem>
+      </varlistentry>
+
+      <varlistentry id="opt.prof_thread_active_init">
+        <term>
+          <mallctl>opt.prof_thread_active_init</mallctl>
+          (<type>bool</type>)
+          <literal>r-</literal>
+          [<option>--enable-prof</option>]
+        </term>
+        <listitem><para>Initial setting for <link
+        linkend="thread.prof.active"><mallctl>thread.prof.active</mallctl></link>
+        in newly created threads.  The initial setting for newly created threads
+        can also be changed during execution via the <link
+        linkend="prof.thread_active_init"><mallctl>prof.thread_active_init</mallctl></link>
+        mallctl.  This option is enabled by default.</para></listitem>
+      </varlistentry>
+
+      <varlistentry id="opt.lg_prof_sample">
+        <term>
+          <mallctl>opt.lg_prof_sample</mallctl>
+          (<type>size_t</type>)
+          <literal>r-</literal>
+          [<option>--enable-prof</option>]
+        </term>
+        <listitem><para>Average interval (log base 2) between allocation
+        samples, as measured in bytes of allocation activity.  Increasing the
+        sampling interval decreases profile fidelity, but also decreases the
+        computational overhead.  The default sample interval is 512 KiB (2^19
+        B).</para></listitem>
+      </varlistentry>
+
+      <varlistentry id="opt.prof_accum">
+        <term>
+          <mallctl>opt.prof_accum</mallctl>
+          (<type>bool</type>)
+          <literal>r-</literal>
+          [<option>--enable-prof</option>]
+        </term>
+        <listitem><para>Reporting of cumulative object/byte counts in profile
+        dumps enabled/disabled.  If this option is enabled, every unique
+        backtrace must be stored for the duration of execution.  Depending on
+        the application, this can impose a large memory overhead, and the
+        cumulative counts are not always of interest.  This option is disabled
+        by default.</para></listitem>
+      </varlistentry>
+
+      <varlistentry id="opt.lg_prof_interval">
+        <term>
+          <mallctl>opt.lg_prof_interval</mallctl>
+          (<type>ssize_t</type>)
+          <literal>r-</literal>
+          [<option>--enable-prof</option>]
+        </term>
+        <listitem><para>Average interval (log base 2) between memory profile
+        dumps, as measured in bytes of allocation activity.  The actual
+        interval between dumps may be sporadic because decentralized allocation
+        counters are used to avoid synchronization bottlenecks.  Profiles are
+        dumped to files named according to the pattern
+        <filename>&lt;prefix&gt;.&lt;pid&gt;.&lt;seq&gt;.i&lt;iseq&gt;.heap</filename>,
+        where <literal>&lt;prefix&gt;</literal> is controlled by the
+        <link
+        linkend="opt.prof_prefix"><mallctl>opt.prof_prefix</mallctl></link> and
+        <link linkend="prof.prefix"><mallctl>prof.prefix</mallctl></link>
+        options.  By default, interval-triggered profile dumping is disabled
+        (encoded as -1).
+        </para></listitem>
+      </varlistentry>
+
+      <varlistentry id="opt.prof_gdump">
+        <term>
+          <mallctl>opt.prof_gdump</mallctl>
+          (<type>bool</type>)
+          <literal>r-</literal>
+          [<option>--enable-prof</option>]
+        </term>
+        <listitem><para>Set the initial state of <link
+        linkend="prof.gdump"><mallctl>prof.gdump</mallctl></link>, which when
+        enabled triggers a memory profile dump every time the total virtual
+        memory exceeds the previous maximum.  This option is disabled by
+        default.</para></listitem>
+      </varlistentry>
+
+      <varlistentry id="opt.prof_final">
+        <term>
+          <mallctl>opt.prof_final</mallctl>
+          (<type>bool</type>)
+          <literal>r-</literal>
+          [<option>--enable-prof</option>]
+        </term>
+        <listitem><para>Use an
+        <citerefentry><refentrytitle>atexit</refentrytitle>
+        <manvolnum>3</manvolnum></citerefentry> function to dump final memory
+        usage to a file named according to the pattern
+        <filename>&lt;prefix&gt;.&lt;pid&gt;.&lt;seq&gt;.f.heap</filename>,
+        where <literal>&lt;prefix&gt;</literal> is controlled by the <link
+        linkend="opt.prof_prefix"><mallctl>opt.prof_prefix</mallctl></link> and
+        <link linkend="prof.prefix"><mallctl>prof.prefix</mallctl></link>
+        options.  Note that <function>atexit()</function> may allocate
+        memory during application initialization and then deadlock internally
+        when jemalloc in turn calls <function>atexit()</function>, so
+        this option is not universally usable (though the application can
+        register its own <function>atexit()</function> function with
+        equivalent functionality).  This option is disabled by
+        default.</para></listitem>
+      </varlistentry>
+
+      <varlistentry id="opt.prof_leak">
+        <term>
+          <mallctl>opt.prof_leak</mallctl>
+          (<type>bool</type>)
+          <literal>r-</literal>
+          [<option>--enable-prof</option>]
+        </term>
+        <listitem><para>Leak reporting enabled/disabled.  If enabled, use an
+        <citerefentry><refentrytitle>atexit</refentrytitle>
+        <manvolnum>3</manvolnum></citerefentry> function to report memory leaks
+        detected by allocation sampling.  See the
+        <link linkend="opt.prof"><mallctl>opt.prof</mallctl></link> option for
+        information on analyzing heap profile output.  Works only when combined
+        with <link linkend="opt.prof_final"><mallctl>opt.prof_final</mallctl>
+        </link>, otherwise does nothing.  This option is disabled by default.
+        </para></listitem>
+      </varlistentry>
+
+      <varlistentry id="opt.prof_leak_error">
+        <term>
+          <mallctl>opt.prof_leak_error</mallctl>
+          (<type>bool</type>)
+          <literal>r-</literal>
+          [<option>--enable-prof</option>]
+        </term>
+        <listitem><para>Similar to <link linkend="opt.prof_leak"><mallctl>
+        opt.prof_leak</mallctl></link>, but makes the process exit with error
+        code 1 if a memory leak is detected.  This option supersedes
+        <link linkend="opt.prof_leak"><mallctl>opt.prof_leak</mallctl></link>,
+        meaning that if both are specified, this option takes precedence.  When
+        enabled, also enables <link linkend="opt.prof_leak"><mallctl>
+        opt.prof_leak</mallctl></link>.  Works only when combined with
+        <link linkend="opt.prof_final"><mallctl>opt.prof_final</mallctl></link>,
+        otherwise does nothing.  This option is disabled by default.
+        </para></listitem>
+      </varlistentry>
+
+      <varlistentry id="opt.zero_realloc">
+        <term>
+          <mallctl>opt.zero_realloc</mallctl>
+          (<type>const char *</type>)
+          <literal>r-</literal>
+        </term>
+        <listitem><para> Determines the behavior of
+        <function>realloc()</function> when passed a value of zero for the new
+        size.  <quote>alloc</quote> treats this as an allocation of size zero
+        (and returns a non-null result except in case of resource exhaustion).
+        <quote>free</quote> treats this as a deallocation of the pointer, and
+        returns <constant>NULL</constant> without setting
+        <varname>errno</varname>.  <quote>abort</quote> aborts the process if
+        zero is passed.  The default is <quote>free</quote> on Linux and
+        Windows, and <quote>alloc</quote> elsewhere.</para>
+
+	<para>There is considerable divergence of behaviors across
+	implementations in handling this case. Many have the behavior of
+	<quote>free</quote>. This can introduce security vulnerabilities, since
+	a <constant>NULL</constant> return value indicates failure, and the
+	continued validity of the passed-in pointer (per POSIX and C11).
+	<quote>alloc</quote> is safe, but can cause leaks in programs that
+	expect the common behavior.  Programs intended to be portable and
+	leak-free cannot assume either behavior, and must therefore never call
+	realloc with a size of 0.  The <quote>abort</quote> option enables these
+	testing this behavior.</para></listitem>
+      </varlistentry>
+
+      <varlistentry id="thread.arena">
+        <term>
+          <mallctl>thread.arena</mallctl>
+          (<type>unsigned</type>)
+          <literal>rw</literal>
+        </term>
+        <listitem><para>Get or set the arena associated with the calling
+        thread.  If the specified arena was not initialized beforehand (see the
+        <link
+        linkend="arena.i.initialized"><mallctl>arena.i.initialized</mallctl></link>
+        mallctl), it will be automatically initialized as a side effect of
+        calling this interface.</para></listitem>
+      </varlistentry>
+
+      <varlistentry id="thread.allocated">
+        <term>
+          <mallctl>thread.allocated</mallctl>
+          (<type>uint64_t</type>)
+          <literal>r-</literal>
+          [<option>--enable-stats</option>]
+        </term>
+        <listitem><para>Get the total number of bytes ever allocated by the
+        calling thread.  This counter has the potential to wrap around; it is
+        up to the application to appropriately interpret the counter in such
+        cases.</para></listitem>
+      </varlistentry>
+
+      <varlistentry id="thread.allocatedp">
+        <term>
+          <mallctl>thread.allocatedp</mallctl>
+          (<type>uint64_t *</type>)
+          <literal>r-</literal>
+          [<option>--enable-stats</option>]
+        </term>
+        <listitem><para>Get a pointer to the the value that is returned by the
+        <link
+        linkend="thread.allocated"><mallctl>thread.allocated</mallctl></link>
+        mallctl.  This is useful for avoiding the overhead of repeated
+        <function>mallctl*()</function> calls.  Note that the underlying counter
+        should not be modified by the application.</para></listitem>
+      </varlistentry>
+
+      <varlistentry id="thread.deallocated">
+        <term>
+          <mallctl>thread.deallocated</mallctl>
+          (<type>uint64_t</type>)
+          <literal>r-</literal>
+          [<option>--enable-stats</option>]
+        </term>
+        <listitem><para>Get the total number of bytes ever deallocated by the
+        calling thread.  This counter has the potential to wrap around; it is
+        up to the application to appropriately interpret the counter in such
+        cases.</para></listitem>
+      </varlistentry>
+
+      <varlistentry id="thread.deallocatedp">
+        <term>
+          <mallctl>thread.deallocatedp</mallctl>
+          (<type>uint64_t *</type>)
+          <literal>r-</literal>
+          [<option>--enable-stats</option>]
+        </term>
+        <listitem><para>Get a pointer to the the value that is returned by the
+        <link
+        linkend="thread.deallocated"><mallctl>thread.deallocated</mallctl></link>
+        mallctl.  This is useful for avoiding the overhead of repeated
+        <function>mallctl*()</function> calls.  Note that the underlying counter
+        should not be modified by the application.</para></listitem>
+      </varlistentry>
+
+      <varlistentry id="thread.peak.read">
+        <term>
+          <mallctl>thread.peak.read</mallctl>
+          (<type>uint64_t</type>)
+          <literal>r-</literal>
+          [<option>--enable-stats</option>]
+        </term>
+        <listitem><para>Get an approximation of the maximum value of the
+        difference between the number of bytes allocated and the number of bytes
+        deallocated by the calling thread since the last call to <link
+        linkend="thread.peak.reset"><mallctl>thread.peak.reset</mallctl></link>,
+        or since the thread's creation if it has not called <link
+        linkend="thread.peak.reset"><mallctl>thread.peak.reset</mallctl></link>.
+        No guarantees are made about the quality of the approximation, but
+        jemalloc currently endeavors to maintain accuracy to within one hundred
+        kilobytes.
+        </para></listitem>
+      </varlistentry>
+
+      <varlistentry id="thread.peak.reset">
+        <term>
+          <mallctl>thread.peak.reset</mallctl>
+          (<type>void</type>)
+          <literal>--</literal>
+          [<option>--enable-stats</option>]
+        </term>
+        <listitem><para>Resets the counter for net bytes allocated in the calling
+        thread to zero. This affects subsequent calls to <link
+        linkend="thread.peak.read"><mallctl>thread.peak.read</mallctl></link>,
+        but not the values returned by <link
+        linkend="thread.allocated"><mallctl>thread.allocated</mallctl></link>
+        or <link
+        linkend="thread.deallocated"><mallctl>thread.deallocated</mallctl></link>.
+        </para></listitem>
+      </varlistentry>
+
+      <varlistentry id="thread.tcache.enabled">
+        <term>
+          <mallctl>thread.tcache.enabled</mallctl>
+          (<type>bool</type>)
+          <literal>rw</literal>
+        </term>
+        <listitem><para>Enable/disable calling thread's tcache.  The tcache is
+        implicitly flushed as a side effect of becoming
+        disabled (see <link
+        linkend="thread.tcache.flush"><mallctl>thread.tcache.flush</mallctl></link>).
+        </para></listitem>
+      </varlistentry>
+
+      <varlistentry id="thread.tcache.flush">
+        <term>
+          <mallctl>thread.tcache.flush</mallctl>
+          (<type>void</type>)
+          <literal>--</literal>
+        </term>
+        <listitem><para>Flush calling thread's thread-specific cache (tcache).
+        This interface releases all cached objects and internal data structures
+        associated with the calling thread's tcache.  Ordinarily, this interface
+        need not be called, since automatic periodic incremental garbage
+        collection occurs, and the thread cache is automatically discarded when
+        a thread exits.  However, garbage collection is triggered by allocation
+        activity, so it is possible for a thread that stops
+        allocating/deallocating to retain its cache indefinitely, in which case
+        the developer may find manual flushing useful.</para></listitem>
+      </varlistentry>
+
+      <varlistentry id="thread.prof.name">
+        <term>
+          <mallctl>thread.prof.name</mallctl>
+          (<type>const char *</type>)
+          <literal>r-</literal> or
+          <literal>-w</literal>
+          [<option>--enable-prof</option>]
+        </term>
+        <listitem><para>Get/set the descriptive name associated with the calling
+        thread in memory profile dumps.  An internal copy of the name string is
+        created, so the input string need not be maintained after this interface
+        completes execution.  The output string of this interface should be
+        copied for non-ephemeral uses, because multiple implementation details
+        can cause asynchronous string deallocation.  Furthermore, each
+        invocation of this interface can only read or write; simultaneous
+        read/write is not supported due to string lifetime limitations.  The
+        name string must be nil-terminated and comprised only of characters in
+        the sets recognized
+        by <citerefentry><refentrytitle>isgraph</refentrytitle>
+        <manvolnum>3</manvolnum></citerefentry> and
+        <citerefentry><refentrytitle>isblank</refentrytitle>
+        <manvolnum>3</manvolnum></citerefentry>.</para></listitem>
+      </varlistentry>
+
+      <varlistentry id="thread.prof.active">
+        <term>
+          <mallctl>thread.prof.active</mallctl>
+          (<type>bool</type>)
+          <literal>rw</literal>
+          [<option>--enable-prof</option>]
+        </term>
+        <listitem><para>Control whether sampling is currently active for the
+        calling thread.  This is an activation mechanism in addition to <link
+        linkend="prof.active"><mallctl>prof.active</mallctl></link>; both must
+        be active for the calling thread to sample.  This flag is enabled by
+        default.</para></listitem>
+      </varlistentry>
+
+      <varlistentry id="thread.idle">
+        <term>
+          <mallctl>thread.idle</mallctl>
+          (<type>void</type>)
+          <literal>--</literal>
+        </term>
+        <listitem><para>Hints to jemalloc that the calling thread will be idle
+	for some nontrivial period of time (say, on the order of seconds), and
+	that doing some cleanup operations may be beneficial.  There are no
+	guarantees as to what specific operations will be performed; currently
+	this flushes the caller's tcache and may (according to some heuristic)
+	purge its associated arena.</para>
+	<para>This is not intended to be a general-purpose background activity
+	mechanism, and threads should not wake up multiple times solely to call
+	it.  Rather, a thread waiting for a task should do a timed wait first,
+	call <link linkend="thread.idle"><mallctl>thread.idle</mallctl></link>
+	if no task appears in the timeout interval, and then do an untimed wait.
+	For such a background activity mechanism, see
+	<link linkend="background_thread"><mallctl>background_thread</mallctl></link>.
+	</para></listitem>
+      </varlistentry>
+
+      <varlistentry id="tcache.create">
+        <term>
+          <mallctl>tcache.create</mallctl>
+          (<type>unsigned</type>)
+          <literal>r-</literal>
+        </term>
+        <listitem><para>Create an explicit thread-specific cache (tcache) and
+        return an identifier that can be passed to the <link
+        linkend="MALLOCX_TCACHE"><constant>MALLOCX_TCACHE(<parameter>tc</parameter>)</constant></link>
+        macro to explicitly use the specified cache rather than the
+        automatically managed one that is used by default.  Each explicit cache
+        can be used by only one thread at a time; the application must assure
+        that this constraint holds.
+        </para>
+
+        <para>If the amount of space supplied for storing the thread-specific
+        cache identifier does not equal
+        <code language="C">sizeof(<type>unsigned</type>)</code>, no
+        thread-specific cache will be created, no data will be written to the
+        space pointed by <parameter>oldp</parameter>, and
+        <parameter>*oldlenp</parameter> will be set to 0.
+        </para></listitem>
+
+      </varlistentry>
+
+      <varlistentry id="tcache.flush">
+        <term>
+          <mallctl>tcache.flush</mallctl>
+          (<type>unsigned</type>)
+          <literal>-w</literal>
+        </term>
+        <listitem><para>Flush the specified thread-specific cache (tcache).  The
+        same considerations apply to this interface as to <link
+        linkend="thread.tcache.flush"><mallctl>thread.tcache.flush</mallctl></link>,
+        except that the tcache will never be automatically discarded.
+        </para></listitem>
+      </varlistentry>
+
+      <varlistentry id="tcache.destroy">
+        <term>
+          <mallctl>tcache.destroy</mallctl>
+          (<type>unsigned</type>)
+          <literal>-w</literal>
+        </term>
+        <listitem><para>Flush the specified thread-specific cache (tcache) and
+        make the identifier available for use during a future tcache creation.
+        </para></listitem>
+      </varlistentry>
+
+      <varlistentry id="arena.i.initialized">
+        <term>
+          <mallctl>arena.&lt;i&gt;.initialized</mallctl>
+          (<type>bool</type>)
+          <literal>r-</literal>
+        </term>
+        <listitem><para>Get whether the specified arena's statistics are
+        initialized (i.e. the arena was initialized prior to the current epoch).
+        This interface can also be nominally used to query whether the merged
+        statistics corresponding to <constant>MALLCTL_ARENAS_ALL</constant> are
+        initialized (always true).</para></listitem>
+      </varlistentry>
+
+      <varlistentry id="arena.i.decay">
+        <term>
+          <mallctl>arena.&lt;i&gt;.decay</mallctl>
+          (<type>void</type>)
+          <literal>--</literal>
+        </term>
+        <listitem><para>Trigger decay-based purging of unused dirty/muzzy pages
+        for arena &lt;i&gt;, or for all arenas if &lt;i&gt; equals
+        <constant>MALLCTL_ARENAS_ALL</constant>.  The proportion of unused
+        dirty/muzzy pages to be purged depends on the current time; see <link
+        linkend="opt.dirty_decay_ms"><mallctl>opt.dirty_decay_ms</mallctl></link>
+        and <link
+        linkend="opt.muzzy_decay_ms"><mallctl>opt.muzy_decay_ms</mallctl></link>
+        for details.</para></listitem>
+      </varlistentry>
+
+      <varlistentry id="arena.i.purge">
+        <term>
+          <mallctl>arena.&lt;i&gt;.purge</mallctl>
+          (<type>void</type>)
+          <literal>--</literal>
+        </term>
+        <listitem><para>Purge all unused dirty pages for arena &lt;i&gt;, or for
+        all arenas if &lt;i&gt; equals <constant>MALLCTL_ARENAS_ALL</constant>.
+        </para></listitem>
+      </varlistentry>
+
+      <varlistentry id="arena.i.reset">
+        <term>
+          <mallctl>arena.&lt;i&gt;.reset</mallctl>
+          (<type>void</type>)
+          <literal>--</literal>
+        </term>
+        <listitem><para>Discard all of the arena's extant allocations.  This
+        interface can only be used with arenas explicitly created via <link
+        linkend="arenas.create"><mallctl>arenas.create</mallctl></link>.  None
+        of the arena's discarded/cached allocations may accessed afterward.  As
+        part of this requirement, all thread caches which were used to
+        allocate/deallocate in conjunction with the arena must be flushed
+        beforehand.</para></listitem>
+      </varlistentry>
+
+      <varlistentry id="arena.i.destroy">
+        <term>
+          <mallctl>arena.&lt;i&gt;.destroy</mallctl>
+          (<type>void</type>)
+          <literal>--</literal>
+        </term>
+        <listitem><para>Destroy the arena.  Discard all of the arena's extant
+        allocations using the same mechanism as for <link
+        linkend="arena.i.reset"><mallctl>arena.&lt;i&gt;.reset</mallctl></link>
+        (with all the same constraints and side effects), merge the arena stats
+        into those accessible at arena index
+        <constant>MALLCTL_ARENAS_DESTROYED</constant>, and then completely
+        discard all metadata associated with the arena.  Future calls to <link
+        linkend="arenas.create"><mallctl>arenas.create</mallctl></link> may
+        recycle the arena index.  Destruction will fail if any threads are
+        currently associated with the arena as a result of calls to <link
+        linkend="thread.arena"><mallctl>thread.arena</mallctl></link>.</para></listitem>
+      </varlistentry>
+
+      <varlistentry id="arena.i.dss">
+        <term>
+          <mallctl>arena.&lt;i&gt;.dss</mallctl>
+          (<type>const char *</type>)
+          <literal>rw</literal>
+        </term>
+        <listitem><para>Set the precedence of dss allocation as related to mmap
+        allocation for arena &lt;i&gt;, or for all arenas if &lt;i&gt; equals
+        <constant>MALLCTL_ARENAS_ALL</constant>.  See <link
+        linkend="opt.dss"><mallctl>opt.dss</mallctl></link> for supported
+        settings.</para></listitem>
+      </varlistentry>
+
+      <varlistentry id="arena.i.dirty_decay_ms">
+        <term>
+          <mallctl>arena.&lt;i&gt;.dirty_decay_ms</mallctl>
+          (<type>ssize_t</type>)
+          <literal>rw</literal>
+        </term>
+        <listitem><para>Current per-arena approximate time in milliseconds from
+        the creation of a set of unused dirty pages until an equivalent set of
+        unused dirty pages is purged and/or reused.  Each time this interface is
+        set, all currently unused dirty pages are considered to have fully
+        decayed, which causes immediate purging of all unused dirty pages unless
+        the decay time is set to -1 (i.e. purging disabled).  See <link
+        linkend="opt.dirty_decay_ms"><mallctl>opt.dirty_decay_ms</mallctl></link>
+        for additional information.</para></listitem>
+      </varlistentry>
+
+      <varlistentry id="arena.i.muzzy_decay_ms">
+        <term>
+          <mallctl>arena.&lt;i&gt;.muzzy_decay_ms</mallctl>
+          (<type>ssize_t</type>)
+          <literal>rw</literal>
+        </term>
+        <listitem><para>Current per-arena approximate time in milliseconds from
+        the creation of a set of unused muzzy pages until an equivalent set of
+        unused muzzy pages is purged and/or reused.  Each time this interface is
+        set, all currently unused muzzy pages are considered to have fully
+        decayed, which causes immediate purging of all unused muzzy pages unless
+        the decay time is set to -1 (i.e. purging disabled).  See <link
+        linkend="opt.muzzy_decay_ms"><mallctl>opt.muzzy_decay_ms</mallctl></link>
+        for additional information.</para></listitem>
+      </varlistentry>
+
+      <varlistentry id="arena.i.retain_grow_limit">
+        <term>
+          <mallctl>arena.&lt;i&gt;.retain_grow_limit</mallctl>
+          (<type>size_t</type>)
+          <literal>rw</literal>
+        </term>
+        <listitem><para>Maximum size to grow retained region (only relevant when
+        <link linkend="opt.retain"><mallctl>opt.retain</mallctl></link> is
+        enabled).  This controls the maximum increment to expand virtual memory,
+        or allocation through <link
+        linkend="arena.i.extent_hooks"><mallctl>arena.&lt;i&gt;extent_hooks</mallctl></link>.
+        In particular, if customized extent hooks reserve physical memory
+        (e.g. 1G huge pages), this is useful to control the allocation hook's
+        input size.  The default is no limit.</para></listitem>
+      </varlistentry>
+
+      <varlistentry id="arena.i.extent_hooks">
+        <term>
+          <mallctl>arena.&lt;i&gt;.extent_hooks</mallctl>
+          (<type>extent_hooks_t *</type>)
+          <literal>rw</literal>
+        </term>
+        <listitem><para>Get or set the extent management hook functions for
+        arena &lt;i&gt;.  The functions must be capable of operating on all
+        extant extents associated with arena &lt;i&gt;, usually by passing
+        unknown extents to the replaced functions.  In practice, it is feasible
+        to control allocation for arenas explicitly created via <link
+        linkend="arenas.create"><mallctl>arenas.create</mallctl></link> such
+        that all extents originate from an application-supplied extent allocator
+        (by specifying the custom extent hook functions during arena creation).
+        However, the API guarantees for the automatically created arenas may be
+        relaxed -- hooks set there may be called in a "best effort" fashion; in
+        addition there may be extents created prior to the application having an
+        opportunity to take over extent allocation.</para>
+
+        <programlisting language="C"><![CDATA[
+typedef extent_hooks_s extent_hooks_t;
+struct extent_hooks_s {
+	extent_alloc_t		*alloc;
+	extent_dalloc_t		*dalloc;
+	extent_destroy_t	*destroy;
+	extent_commit_t		*commit;
+	extent_decommit_t	*decommit;
+	extent_purge_t		*purge_lazy;
+	extent_purge_t		*purge_forced;
+	extent_split_t		*split;
+	extent_merge_t		*merge;
+};]]></programlisting>
+        <para>The <type>extent_hooks_t</type> structure comprises function
+        pointers which are described individually below.  jemalloc uses these
+        functions to manage extent lifetime, which starts off with allocation of
+        mapped committed memory, in the simplest case followed by deallocation.
+        However, there are performance and platform reasons to retain extents
+        for later reuse.  Cleanup attempts cascade from deallocation to decommit
+        to forced purging to lazy purging, which gives the extent management
+        functions opportunities to reject the most permanent cleanup operations
+        in favor of less permanent (and often less costly) operations.  All
+        operations except allocation can be universally opted out of by setting
+        the hook pointers to <constant>NULL</constant>, or selectively opted out
+        of by returning failure.  Note that once the extent hook is set, the
+        structure is accessed directly by the associated arenas, so it must
+        remain valid for the entire lifetime of the arenas.</para>
+
+        <funcsynopsis><funcprototype>
+          <funcdef>typedef void *<function>(extent_alloc_t)</function></funcdef>
+          <paramdef>extent_hooks_t *<parameter>extent_hooks</parameter></paramdef>
+          <paramdef>void *<parameter>new_addr</parameter></paramdef>
+          <paramdef>size_t <parameter>size</parameter></paramdef>
+          <paramdef>size_t <parameter>alignment</parameter></paramdef>
+          <paramdef>bool *<parameter>zero</parameter></paramdef>
+          <paramdef>bool *<parameter>commit</parameter></paramdef>
+          <paramdef>unsigned <parameter>arena_ind</parameter></paramdef>
+        </funcprototype></funcsynopsis>
+        <literallayout></literallayout>
+        <para>An extent allocation function conforms to the
+        <type>extent_alloc_t</type> type and upon success returns a pointer to
+        <parameter>size</parameter> bytes of mapped memory on behalf of arena
+        <parameter>arena_ind</parameter> such that the extent's base address is
+        a multiple of <parameter>alignment</parameter>, as well as setting
+        <parameter>*zero</parameter> to indicate whether the extent is zeroed
+        and <parameter>*commit</parameter> to indicate whether the extent is
+        committed.  Upon error the function returns <constant>NULL</constant>
+        and leaves <parameter>*zero</parameter> and
+        <parameter>*commit</parameter> unmodified.  The
+        <parameter>size</parameter> parameter is always a multiple of the page
+        size.  The <parameter>alignment</parameter> parameter is always a power
+        of two at least as large as the page size.  Zeroing is mandatory if
+        <parameter>*zero</parameter> is true upon function entry.  Committing is
+        mandatory if <parameter>*commit</parameter> is true upon function entry.
+        If <parameter>new_addr</parameter> is not <constant>NULL</constant>, the
+        returned pointer must be <parameter>new_addr</parameter> on success or
+        <constant>NULL</constant> on error.  Committed memory may be committed
+        in absolute terms as on a system that does not overcommit, or in
+        implicit terms as on a system that overcommits and satisfies physical
+        memory needs on demand via soft page faults.  Note that replacing the
+        default extent allocation function makes the arena's <link
+        linkend="arena.i.dss"><mallctl>arena.&lt;i&gt;.dss</mallctl></link>
+        setting irrelevant.</para>
+
+        <funcsynopsis><funcprototype>
+          <funcdef>typedef bool <function>(extent_dalloc_t)</function></funcdef>
+          <paramdef>extent_hooks_t *<parameter>extent_hooks</parameter></paramdef>
+          <paramdef>void *<parameter>addr</parameter></paramdef>
+          <paramdef>size_t <parameter>size</parameter></paramdef>
+          <paramdef>bool <parameter>committed</parameter></paramdef>
+          <paramdef>unsigned <parameter>arena_ind</parameter></paramdef>
+        </funcprototype></funcsynopsis>
+        <literallayout></literallayout>
+        <para>
+        An extent deallocation function conforms to the
+        <type>extent_dalloc_t</type> type and deallocates an extent at given
+        <parameter>addr</parameter> and <parameter>size</parameter> with
+        <parameter>committed</parameter>/decommited memory as indicated, on
+        behalf of arena <parameter>arena_ind</parameter>, returning false upon
+        success.  If the function returns true, this indicates opt-out from
+        deallocation; the virtual memory mapping associated with the extent
+        remains mapped, in the same commit state, and available for future use,
+        in which case it will be automatically retained for later reuse.</para>
+
+        <funcsynopsis><funcprototype>
+          <funcdef>typedef void <function>(extent_destroy_t)</function></funcdef>
+          <paramdef>extent_hooks_t *<parameter>extent_hooks</parameter></paramdef>
+          <paramdef>void *<parameter>addr</parameter></paramdef>
+          <paramdef>size_t <parameter>size</parameter></paramdef>
+          <paramdef>bool <parameter>committed</parameter></paramdef>
+          <paramdef>unsigned <parameter>arena_ind</parameter></paramdef>
+        </funcprototype></funcsynopsis>
+        <literallayout></literallayout>
+        <para>
+        An extent destruction function conforms to the
+        <type>extent_destroy_t</type> type and unconditionally destroys an
+        extent at given <parameter>addr</parameter> and
+        <parameter>size</parameter> with
+        <parameter>committed</parameter>/decommited memory as indicated, on
+        behalf of arena <parameter>arena_ind</parameter>.  This function may be
+        called to destroy retained extents during arena destruction (see <link
+        linkend="arena.i.destroy"><mallctl>arena.&lt;i&gt;.destroy</mallctl></link>).</para>
+
+        <funcsynopsis><funcprototype>
+          <funcdef>typedef bool <function>(extent_commit_t)</function></funcdef>
+          <paramdef>extent_hooks_t *<parameter>extent_hooks</parameter></paramdef>
+          <paramdef>void *<parameter>addr</parameter></paramdef>
+          <paramdef>size_t <parameter>size</parameter></paramdef>
+          <paramdef>size_t <parameter>offset</parameter></paramdef>
+          <paramdef>size_t <parameter>length</parameter></paramdef>
+          <paramdef>unsigned <parameter>arena_ind</parameter></paramdef>
+        </funcprototype></funcsynopsis>
+        <literallayout></literallayout>
+        <para>An extent commit function conforms to the
+        <type>extent_commit_t</type> type and commits zeroed physical memory to
+        back pages within an extent at given <parameter>addr</parameter> and
+        <parameter>size</parameter> at <parameter>offset</parameter> bytes,
+        extending for <parameter>length</parameter> on behalf of arena
+        <parameter>arena_ind</parameter>, returning false upon success.
+        Committed memory may be committed in absolute terms as on a system that
+        does not overcommit, or in implicit terms as on a system that
+        overcommits and satisfies physical memory needs on demand via soft page
+        faults. If the function returns true, this indicates insufficient
+        physical memory to satisfy the request.</para>
+
+        <funcsynopsis><funcprototype>
+          <funcdef>typedef bool <function>(extent_decommit_t)</function></funcdef>
+          <paramdef>extent_hooks_t *<parameter>extent_hooks</parameter></paramdef>
+          <paramdef>void *<parameter>addr</parameter></paramdef>
+          <paramdef>size_t <parameter>size</parameter></paramdef>
+          <paramdef>size_t <parameter>offset</parameter></paramdef>
+          <paramdef>size_t <parameter>length</parameter></paramdef>
+          <paramdef>unsigned <parameter>arena_ind</parameter></paramdef>
+        </funcprototype></funcsynopsis>
+        <literallayout></literallayout>
+        <para>An extent decommit function conforms to the
+        <type>extent_decommit_t</type> type and decommits any physical memory
+        that is backing pages within an extent at given
+        <parameter>addr</parameter> and <parameter>size</parameter> at
+        <parameter>offset</parameter> bytes, extending for
+        <parameter>length</parameter> on behalf of arena
+        <parameter>arena_ind</parameter>, returning false upon success, in which
+        case the pages will be committed via the extent commit function before
+        being reused.  If the function returns true, this indicates opt-out from
+        decommit; the memory remains committed and available for future use, in
+        which case it will be automatically retained for later reuse.</para>
+
+        <funcsynopsis><funcprototype>
+          <funcdef>typedef bool <function>(extent_purge_t)</function></funcdef>
+          <paramdef>extent_hooks_t *<parameter>extent_hooks</parameter></paramdef>
+          <paramdef>void *<parameter>addr</parameter></paramdef>
+          <paramdef>size_t <parameter>size</parameter></paramdef>
+          <paramdef>size_t <parameter>offset</parameter></paramdef>
+          <paramdef>size_t <parameter>length</parameter></paramdef>
+          <paramdef>unsigned <parameter>arena_ind</parameter></paramdef>
+        </funcprototype></funcsynopsis>
+        <literallayout></literallayout>
+        <para>An extent purge function conforms to the
+        <type>extent_purge_t</type> type and discards physical pages
+        within the virtual memory mapping associated with an extent at given
+        <parameter>addr</parameter> and <parameter>size</parameter> at
+        <parameter>offset</parameter> bytes, extending for
+        <parameter>length</parameter> on behalf of arena
+        <parameter>arena_ind</parameter>.  A lazy extent purge function (e.g.
+        implemented via
+        <function>madvise(<parameter>...</parameter><parameter><constant>MADV_FREE</constant></parameter>)</function>)
+        can delay purging indefinitely and leave the pages within the purged
+        virtual memory range in an indeterminite state, whereas a forced extent
+        purge function immediately purges, and the pages within the virtual
+        memory range will be zero-filled the next time they are accessed.  If
+        the function returns true, this indicates failure to purge.</para>
+
+        <funcsynopsis><funcprototype>
+          <funcdef>typedef bool <function>(extent_split_t)</function></funcdef>
+          <paramdef>extent_hooks_t *<parameter>extent_hooks</parameter></paramdef>
+          <paramdef>void *<parameter>addr</parameter></paramdef>
+          <paramdef>size_t <parameter>size</parameter></paramdef>
+          <paramdef>size_t <parameter>size_a</parameter></paramdef>
+          <paramdef>size_t <parameter>size_b</parameter></paramdef>
+          <paramdef>bool <parameter>committed</parameter></paramdef>
+          <paramdef>unsigned <parameter>arena_ind</parameter></paramdef>
+        </funcprototype></funcsynopsis>
+        <literallayout></literallayout>
+        <para>An extent split function conforms to the
+        <type>extent_split_t</type> type and optionally splits an extent at
+        given <parameter>addr</parameter> and <parameter>size</parameter> into
+        two adjacent extents, the first of <parameter>size_a</parameter> bytes,
+        and the second of <parameter>size_b</parameter> bytes, operating on
+        <parameter>committed</parameter>/decommitted memory as indicated, on
+        behalf of arena <parameter>arena_ind</parameter>, returning false upon
+        success.  If the function returns true, this indicates that the extent
+        remains unsplit and therefore should continue to be operated on as a
+        whole.</para>
+
+        <funcsynopsis><funcprototype>
+          <funcdef>typedef bool <function>(extent_merge_t)</function></funcdef>
+          <paramdef>extent_hooks_t *<parameter>extent_hooks</parameter></paramdef>
+          <paramdef>void *<parameter>addr_a</parameter></paramdef>
+          <paramdef>size_t <parameter>size_a</parameter></paramdef>
+          <paramdef>void *<parameter>addr_b</parameter></paramdef>
+          <paramdef>size_t <parameter>size_b</parameter></paramdef>
+          <paramdef>bool <parameter>committed</parameter></paramdef>
+          <paramdef>unsigned <parameter>arena_ind</parameter></paramdef>
+        </funcprototype></funcsynopsis>
+        <literallayout></literallayout>
+        <para>An extent merge function conforms to the
+        <type>extent_merge_t</type> type and optionally merges adjacent extents,
+        at given <parameter>addr_a</parameter> and <parameter>size_a</parameter>
+        with given <parameter>addr_b</parameter> and
+        <parameter>size_b</parameter> into one contiguous extent, operating on
+        <parameter>committed</parameter>/decommitted memory as indicated, on
+        behalf of arena <parameter>arena_ind</parameter>, returning false upon
+        success.  If the function returns true, this indicates that the extents
+        remain distinct mappings and therefore should continue to be operated on
+        independently.</para>
+        </listitem>
+      </varlistentry>
+
+      <varlistentry id="arenas.narenas">
+        <term>
+          <mallctl>arenas.narenas</mallctl>
+          (<type>unsigned</type>)
+          <literal>r-</literal>
+        </term>
+        <listitem><para>Current limit on number of arenas.</para></listitem>
+      </varlistentry>
+
+      <varlistentry id="arenas.dirty_decay_ms">
+        <term>
+          <mallctl>arenas.dirty_decay_ms</mallctl>
+          (<type>ssize_t</type>)
+          <literal>rw</literal>
+        </term>
+        <listitem><para>Current default per-arena approximate time in
+        milliseconds from the creation of a set of unused dirty pages until an
+        equivalent set of unused dirty pages is purged and/or reused, used to
+        initialize <link
+        linkend="arena.i.dirty_decay_ms"><mallctl>arena.&lt;i&gt;.dirty_decay_ms</mallctl></link>
+        during arena creation.  See <link
+        linkend="opt.dirty_decay_ms"><mallctl>opt.dirty_decay_ms</mallctl></link>
+        for additional information.</para></listitem>
+      </varlistentry>
+
+      <varlistentry id="arenas.muzzy_decay_ms">
+        <term>
+          <mallctl>arenas.muzzy_decay_ms</mallctl>
+          (<type>ssize_t</type>)
+          <literal>rw</literal>
+        </term>
+        <listitem><para>Current default per-arena approximate time in
+        milliseconds from the creation of a set of unused muzzy pages until an
+        equivalent set of unused muzzy pages is purged and/or reused, used to
+        initialize <link
+        linkend="arena.i.muzzy_decay_ms"><mallctl>arena.&lt;i&gt;.muzzy_decay_ms</mallctl></link>
+        during arena creation.  See <link
+        linkend="opt.muzzy_decay_ms"><mallctl>opt.muzzy_decay_ms</mallctl></link>
+        for additional information.</para></listitem>
+      </varlistentry>
+
+      <varlistentry id="arenas.quantum">
+        <term>
+          <mallctl>arenas.quantum</mallctl>
+          (<type>size_t</type>)
+          <literal>r-</literal>
+        </term>
+        <listitem><para>Quantum size.</para></listitem>
+      </varlistentry>
+
+      <varlistentry id="arenas.page">
+        <term>
+          <mallctl>arenas.page</mallctl>
+          (<type>size_t</type>)
+          <literal>r-</literal>
+        </term>
+        <listitem><para>Page size.</para></listitem>
+      </varlistentry>
+
+      <varlistentry id="arenas.tcache_max">
+        <term>
+          <mallctl>arenas.tcache_max</mallctl>
+          (<type>size_t</type>)
+          <literal>r-</literal>
+        </term>
+        <listitem><para>Maximum thread-cached size class.</para></listitem>
+      </varlistentry>
+
+      <varlistentry id="arenas.nbins">
+        <term>
+          <mallctl>arenas.nbins</mallctl>
+          (<type>unsigned</type>)
+          <literal>r-</literal>
+        </term>
+        <listitem><para>Number of bin size classes.</para></listitem>
+      </varlistentry>
+
+      <varlistentry id="arenas.nhbins">
+        <term>
+          <mallctl>arenas.nhbins</mallctl>
+          (<type>unsigned</type>)
+          <literal>r-</literal>
+        </term>
+        <listitem><para>Total number of thread cache bin size
+        classes.</para></listitem>
+      </varlistentry>
+
+      <varlistentry id="arenas.bin.i.size">
+        <term>
+          <mallctl>arenas.bin.&lt;i&gt;.size</mallctl>
+          (<type>size_t</type>)
+          <literal>r-</literal>
+        </term>
+        <listitem><para>Maximum size supported by size class.</para></listitem>
+      </varlistentry>
+
+      <varlistentry id="arenas.bin.i.nregs">
+        <term>
+          <mallctl>arenas.bin.&lt;i&gt;.nregs</mallctl>
+          (<type>uint32_t</type>)
+          <literal>r-</literal>
+        </term>
+        <listitem><para>Number of regions per slab.</para></listitem>
+      </varlistentry>
+
+      <varlistentry id="arenas.bin.i.slab_size">
+        <term>
+          <mallctl>arenas.bin.&lt;i&gt;.slab_size</mallctl>
+          (<type>size_t</type>)
+          <literal>r-</literal>
+        </term>
+        <listitem><para>Number of bytes per slab.</para></listitem>
+      </varlistentry>
+
+      <varlistentry id="arenas.nlextents">
+        <term>
+          <mallctl>arenas.nlextents</mallctl>
+          (<type>unsigned</type>)
+          <literal>r-</literal>
+        </term>
+        <listitem><para>Total number of large size classes.</para></listitem>
+      </varlistentry>
+
+      <varlistentry id="arenas.lextent.i.size">
+        <term>
+          <mallctl>arenas.lextent.&lt;i&gt;.size</mallctl>
+          (<type>size_t</type>)
+          <literal>r-</literal>
+        </term>
+        <listitem><para>Maximum size supported by this large size
+        class.</para></listitem>
+      </varlistentry>
+
+      <varlistentry id="arenas.create">
+        <term>
+          <mallctl>arenas.create</mallctl>
+          (<type>unsigned</type>, <type>extent_hooks_t *</type>)
+          <literal>rw</literal>
+        </term>
+        <listitem><para>Explicitly create a new arena outside the range of
+        automatically managed arenas, with optionally specified extent hooks,
+        and return the new arena index.</para>
+
+        <para>If the amount of space supplied for storing the arena index does
+        not equal <code language="C">sizeof(<type>unsigned</type>)</code>, no
+        arena will be created, no data will be written to the space pointed by
+        <parameter>oldp</parameter>, and <parameter>*oldlenp</parameter> will
+        be set to 0.
+        </para></listitem>
+      </varlistentry>
+
+      <varlistentry id="arenas.lookup">
+        <term>
+          <mallctl>arenas.lookup</mallctl>
+          (<type>unsigned</type>, <type>void*</type>)
+          <literal>rw</literal>
+        </term>
+        <listitem><para>Index of the arena to which an allocation belongs to.</para></listitem>
+      </varlistentry>
+
+      <varlistentry id="prof.thread_active_init">
+        <term>
+          <mallctl>prof.thread_active_init</mallctl>
+          (<type>bool</type>)
+          <literal>rw</literal>
+          [<option>--enable-prof</option>]
+        </term>
+        <listitem><para>Control the initial setting for <link
+        linkend="thread.prof.active"><mallctl>thread.prof.active</mallctl></link>
+        in newly created threads.  See the <link
+        linkend="opt.prof_thread_active_init"><mallctl>opt.prof_thread_active_init</mallctl></link>
+        option for additional information.</para></listitem>
+      </varlistentry>
+
+      <varlistentry id="prof.active">
+        <term>
+          <mallctl>prof.active</mallctl>
+          (<type>bool</type>)
+          <literal>rw</literal>
+          [<option>--enable-prof</option>]
+        </term>
+        <listitem><para>Control whether sampling is currently active.  See the
+        <link
+        linkend="opt.prof_active"><mallctl>opt.prof_active</mallctl></link>
+        option for additional information, as well as the interrelated <link
+        linkend="thread.prof.active"><mallctl>thread.prof.active</mallctl></link>
+        mallctl.</para></listitem>
+      </varlistentry>
+
+      <varlistentry id="prof.dump">
+        <term>
+          <mallctl>prof.dump</mallctl>
+          (<type>const char *</type>)
+          <literal>-w</literal>
+          [<option>--enable-prof</option>]
+        </term>
+        <listitem><para>Dump a memory profile to the specified file, or if NULL
+        is specified, to a file according to the pattern
+        <filename>&lt;prefix&gt;.&lt;pid&gt;.&lt;seq&gt;.m&lt;mseq&gt;.heap</filename>,
+        where <literal>&lt;prefix&gt;</literal> is controlled by the
+        <link linkend="opt.prof_prefix"><mallctl>opt.prof_prefix</mallctl></link>
+        and <link linkend="prof.prefix"><mallctl>prof.prefix</mallctl></link>
+        options.</para></listitem>
+      </varlistentry>
+
+      <varlistentry id="prof.prefix">
+        <term>
+          <mallctl>prof.prefix</mallctl>
+          (<type>const char *</type>)
+          <literal>-w</literal>
+          [<option>--enable-prof</option>]
+        </term>
+        <listitem><para>Set the filename prefix for profile dumps. See
+        <link
+        linkend="opt.prof_prefix"><mallctl>opt.prof_prefix</mallctl></link>
+        for the default setting.  This can be useful to differentiate profile
+        dumps such as from forked processes.
+        </para></listitem>
+      </varlistentry>
+
+      <varlistentry id="prof.gdump">
+        <term>
+          <mallctl>prof.gdump</mallctl>
+          (<type>bool</type>)
+          <literal>rw</literal>
+          [<option>--enable-prof</option>]
+        </term>
+        <listitem><para>When enabled, trigger a memory profile dump every time
+        the total virtual memory exceeds the previous maximum.  Profiles are
+        dumped to files named according to the pattern
+        <filename>&lt;prefix&gt;.&lt;pid&gt;.&lt;seq&gt;.u&lt;useq&gt;.heap</filename>,
+        where <literal>&lt;prefix&gt;</literal> is controlled by the <link
+        linkend="opt.prof_prefix"><mallctl>opt.prof_prefix</mallctl></link> and
+        <link linkend="prof.prefix"><mallctl>prof.prefix</mallctl></link>
+        options.</para></listitem>
+      </varlistentry>
+
+      <varlistentry id="prof.reset">
+        <term>
+          <mallctl>prof.reset</mallctl>
+          (<type>size_t</type>)
+          <literal>-w</literal>
+          [<option>--enable-prof</option>]
+        </term>
+        <listitem><para>Reset all memory profile statistics, and optionally
+        update the sample rate (see <link
+        linkend="opt.lg_prof_sample"><mallctl>opt.lg_prof_sample</mallctl></link>
+        and <link
+        linkend="prof.lg_sample"><mallctl>prof.lg_sample</mallctl></link>).
+        </para></listitem>
+      </varlistentry>
+
+      <varlistentry id="prof.lg_sample">
+        <term>
+          <mallctl>prof.lg_sample</mallctl>
+          (<type>size_t</type>)
+          <literal>r-</literal>
+          [<option>--enable-prof</option>]
+        </term>
+        <listitem><para>Get the current sample rate (see <link
+        linkend="opt.lg_prof_sample"><mallctl>opt.lg_prof_sample</mallctl></link>).
+        </para></listitem>
+      </varlistentry>
+
+      <varlistentry id="prof.interval">
+        <term>
+          <mallctl>prof.interval</mallctl>
+          (<type>uint64_t</type>)
+          <literal>r-</literal>
+          [<option>--enable-prof</option>]
+        </term>
+        <listitem><para>Average number of bytes allocated between
+        interval-based profile dumps.  See the
+        <link
+        linkend="opt.lg_prof_interval"><mallctl>opt.lg_prof_interval</mallctl></link>
+        option for additional information.</para></listitem>
+      </varlistentry>
+
+      <varlistentry id="stats.allocated">
+        <term>
+          <mallctl>stats.allocated</mallctl>
+          (<type>size_t</type>)
+          <literal>r-</literal>
+          [<option>--enable-stats</option>]
+        </term>
+        <listitem><para>Total number of bytes allocated by the
+        application.</para></listitem>
+      </varlistentry>
+
+      <varlistentry id="stats.active">
+        <term>
+          <mallctl>stats.active</mallctl>
+          (<type>size_t</type>)
+          <literal>r-</literal>
+          [<option>--enable-stats</option>]
+        </term>
+        <listitem><para>Total number of bytes in active pages allocated by the
+        application.  This is a multiple of the page size, and greater than or
+        equal to <link
+        linkend="stats.allocated"><mallctl>stats.allocated</mallctl></link>.
+        This does not include <link linkend="stats.arenas.i.pdirty">
+        <mallctl>stats.arenas.&lt;i&gt;.pdirty</mallctl></link>,
+        <link linkend="stats.arenas.i.pmuzzy">
+        <mallctl>stats.arenas.&lt;i&gt;.pmuzzy</mallctl></link>, nor pages
+        entirely devoted to allocator metadata.</para></listitem>
+      </varlistentry>
+
+      <varlistentry id="stats.metadata">
+        <term>
+          <mallctl>stats.metadata</mallctl>
+          (<type>size_t</type>)
+          <literal>r-</literal>
+          [<option>--enable-stats</option>]
+        </term>
+        <listitem><para>Total number of bytes dedicated to metadata, which
+        comprise base allocations used for bootstrap-sensitive allocator
+        metadata structures (see <link
+        linkend="stats.arenas.i.base"><mallctl>stats.arenas.&lt;i&gt;.base</mallctl></link>)
+        and internal allocations (see <link
+        linkend="stats.arenas.i.internal"><mallctl>stats.arenas.&lt;i&gt;.internal</mallctl></link>).
+        Transparent huge page (enabled with <link
+        linkend="opt.metadata_thp">opt.metadata_thp</link>) usage is not
+        considered.</para></listitem>
+      </varlistentry>
+
+      <varlistentry id="stats.metadata_thp">
+        <term>
+          <mallctl>stats.metadata_thp</mallctl>
+          (<type>size_t</type>)
+          <literal>r-</literal>
+          [<option>--enable-stats</option>]
+        </term>
+        <listitem><para>Number of transparent huge pages (THP) used for
+        metadata.  See <link
+        linkend="stats.metadata"><mallctl>stats.metadata</mallctl></link> and
+        <link linkend="opt.metadata_thp">opt.metadata_thp</link>) for
+        details.</para></listitem>
+      </varlistentry>
+
+      <varlistentry id="stats.resident">
+        <term>
+          <mallctl>stats.resident</mallctl>
+          (<type>size_t</type>)
+          <literal>r-</literal>
+          [<option>--enable-stats</option>]
+        </term>
+        <listitem><para>Maximum number of bytes in physically resident data
+        pages mapped by the allocator, comprising all pages dedicated to
+        allocator metadata, pages backing active allocations, and unused dirty
+        pages.  This is a maximum rather than precise because pages may not
+        actually be physically resident if they correspond to demand-zeroed
+        virtual memory that has not yet been touched.  This is a multiple of the
+        page size, and is larger than <link
+        linkend="stats.active"><mallctl>stats.active</mallctl></link>.</para></listitem>
+      </varlistentry>
+
+      <varlistentry id="stats.mapped">
+        <term>
+          <mallctl>stats.mapped</mallctl>
+          (<type>size_t</type>)
+          <literal>r-</literal>
+          [<option>--enable-stats</option>]
+        </term>
+        <listitem><para>Total number of bytes in active extents mapped by the
+        allocator.  This is larger than <link
+        linkend="stats.active"><mallctl>stats.active</mallctl></link>.  This
+        does not include inactive extents, even those that contain unused dirty
+        pages, which means that there is no strict ordering between this and
+        <link
+        linkend="stats.resident"><mallctl>stats.resident</mallctl></link>.</para></listitem>
+      </varlistentry>
+
+      <varlistentry id="stats.retained">
+        <term>
+          <mallctl>stats.retained</mallctl>
+          (<type>size_t</type>)
+          <literal>r-</literal>
+          [<option>--enable-stats</option>]
+        </term>
+        <listitem><para>Total number of bytes in virtual memory mappings that
+        were retained rather than being returned to the operating system via
+        e.g. <citerefentry><refentrytitle>munmap</refentrytitle>
+        <manvolnum>2</manvolnum></citerefentry> or similar.  Retained virtual
+        memory is typically untouched, decommitted, or purged, so it has no
+        strongly associated physical memory (see <link
+        linkend="arena.i.extent_hooks">extent hooks</link> for details).
+        Retained memory is excluded from mapped memory statistics, e.g. <link
+        linkend="stats.mapped"><mallctl>stats.mapped</mallctl></link>.
+        </para></listitem>
+      </varlistentry>
+
+      <varlistentry id="stats.zero_reallocs">
+        <term>
+          <mallctl>stats.zero_reallocs</mallctl>
+          (<type>size_t</type>)
+          <literal>r-</literal>
+          [<option>--enable-stats</option>]
+        </term>
+        <listitem><para>Number of times that the <function>realloc()</function>
+        was called with a non-<constant>NULL</constant> pointer argument and a
+        <constant>0</constant> size argument.  This is a fundamentally unsafe
+        pattern in portable programs; see <link linkend="opt.zero_realloc">
+        <mallctl>opt.zero_realloc</mallctl></link> for details.
+        </para></listitem>
+      </varlistentry>
+
+      <varlistentry id="stats.background_thread.num_threads">
+        <term>
+          <mallctl>stats.background_thread.num_threads</mallctl>
+          (<type>size_t</type>)
+          <literal>r-</literal>
+          [<option>--enable-stats</option>]
+        </term>
+        <listitem><para> Number of <link linkend="background_thread">background
+        threads</link> running currently.</para></listitem>
+      </varlistentry>
+
+      <varlistentry id="stats.background_thread.num_runs">
+        <term>
+          <mallctl>stats.background_thread.num_runs</mallctl>
+          (<type>uint64_t</type>)
+          <literal>r-</literal>
+          [<option>--enable-stats</option>]
+        </term>
+        <listitem><para> Total number of runs from all <link
+        linkend="background_thread">background threads</link>.</para></listitem>
+      </varlistentry>
+
+      <varlistentry id="stats.background_thread.run_interval">
+        <term>
+          <mallctl>stats.background_thread.run_interval</mallctl>
+          (<type>uint64_t</type>)
+          <literal>r-</literal>
+          [<option>--enable-stats</option>]
+        </term>
+        <listitem><para> Average run interval in nanoseconds of <link
+        linkend="background_thread">background threads</link>.</para></listitem>
+      </varlistentry>
+
+      <varlistentry id="stats.mutexes.ctl">
+        <term>
+          <mallctl>stats.mutexes.ctl.{counter};</mallctl>
+          (<type>counter specific type</type>)
+          <literal>r-</literal>
+          [<option>--enable-stats</option>]
+        </term>
+        <listitem><para>Statistics on <varname>ctl</varname> mutex (global
+        scope; mallctl related).  <mallctl>{counter}</mallctl> is one of the
+        counters below:</para>
+        <varlistentry id="mutex_counters">
+          <listitem><para><varname>num_ops</varname> (<type>uint64_t</type>):
+          Total number of lock acquisition operations on this mutex.</para>
+
+	  <para><varname>num_spin_acq</varname> (<type>uint64_t</type>): Number
+	  of times the mutex was spin-acquired.  When the mutex is currently
+	  locked and cannot be acquired immediately, a short period of
+	  spin-retry within jemalloc will be performed.  Acquired through spin
+	  generally means the contention was lightweight and not causing context
+	  switches.</para>
+
+	  <para><varname>num_wait</varname> (<type>uint64_t</type>): Number of
+	  times the mutex was wait-acquired, which means the mutex contention
+	  was not solved by spin-retry, and blocking operation was likely
+	  involved in order to acquire the mutex.  This event generally implies
+	  higher cost / longer delay, and should be investigated if it happens
+	  often.</para>
+
+	  <para><varname>max_wait_time</varname> (<type>uint64_t</type>):
+	  Maximum length of time in nanoseconds spent on a single wait-acquired
+	  lock operation.  Note that to avoid profiling overhead on the common
+	  path, this does not consider spin-acquired cases.</para>
+
+	  <para><varname>total_wait_time</varname> (<type>uint64_t</type>):
+	  Cumulative time in nanoseconds spent on wait-acquired lock operations.
+	  Similarly, spin-acquired cases are not considered.</para>
+
+	  <para><varname>max_num_thds</varname> (<type>uint32_t</type>): Maximum
+	  number of threads waiting on this mutex simultaneously.  Similarly,
+	  spin-acquired cases are not considered.</para>
+
+	  <para><varname>num_owner_switch</varname> (<type>uint64_t</type>):
+	  Number of times the current mutex owner is different from the previous
+	  one.  This event does not generally imply an issue; rather it is an
+	  indicator of how often the protected data are accessed by different
+	  threads.
+	  </para>
+	  </listitem>
+	</varlistentry>
+	</listitem>
+      </varlistentry>
+
+      <varlistentry id="stats.mutexes.background_thread">
+        <term>
+          <mallctl>stats.mutexes.background_thread.{counter}</mallctl>
+	  (<type>counter specific type</type>) <literal>r-</literal>
+          [<option>--enable-stats</option>]
+        </term>
+        <listitem><para>Statistics on <varname>background_thread</varname> mutex
+        (global scope; <link
+        linkend="background_thread"><mallctl>background_thread</mallctl></link>
+        related).  <mallctl>{counter}</mallctl> is one of the counters in <link
+        linkend="mutex_counters">mutex profiling
+        counters</link>.</para></listitem>
+      </varlistentry>
+
+      <varlistentry id="stats.mutexes.prof">
+        <term>
+          <mallctl>stats.mutexes.prof.{counter}</mallctl>
+	  (<type>counter specific type</type>) <literal>r-</literal>
+          [<option>--enable-stats</option>]
+        </term>
+        <listitem><para>Statistics on <varname>prof</varname> mutex (global
+        scope; profiling related).  <mallctl>{counter}</mallctl> is one of the
+        counters in <link linkend="mutex_counters">mutex profiling
+        counters</link>.</para></listitem>
+      </varlistentry>
+
+      <varlistentry id="stats.mutexes.prof_thds_data">
+        <term>
+          <mallctl>stats.mutexes.prof_thds_data.{counter}</mallctl>
+	  (<type>counter specific type</type>) <literal>r-</literal>
+          [<option>--enable-stats</option>]
+        </term>
+	<listitem><para>Statistics on <varname>prof</varname> threads data mutex
+	(global scope; profiling related).  <mallctl>{counter}</mallctl> is one
+	of the counters in <link linkend="mutex_counters">mutex profiling
+        counters</link>.</para></listitem>
+      </varlistentry>
+
+      <varlistentry id="stats.mutexes.prof_dump">
+        <term>
+          <mallctl>stats.mutexes.prof_dump.{counter}</mallctl>
+	  (<type>counter specific type</type>) <literal>r-</literal>
+          [<option>--enable-stats</option>]
+        </term>
+	<listitem><para>Statistics on <varname>prof</varname> dumping mutex
+	(global scope; profiling related).  <mallctl>{counter}</mallctl> is one
+	of the counters in <link linkend="mutex_counters">mutex profiling
+        counters</link>.</para></listitem>
+      </varlistentry>
+
+      <varlistentry id="stats.mutexes.reset">
+        <term>
+          <mallctl>stats.mutexes.reset</mallctl>
+	  (<type>void</type>) <literal>--</literal>
+          [<option>--enable-stats</option>]
+        </term>
+        <listitem><para>Reset all mutex profile statistics, including global
+        mutexes, arena mutexes and bin mutexes.</para></listitem>
+      </varlistentry>
+
+      <varlistentry id="stats.arenas.i.dss">
+        <term>
+          <mallctl>stats.arenas.&lt;i&gt;.dss</mallctl>
+          (<type>const char *</type>)
+          <literal>r-</literal>
+        </term>
+        <listitem><para>dss (<citerefentry><refentrytitle>sbrk</refentrytitle>
+        <manvolnum>2</manvolnum></citerefentry>) allocation precedence as
+        related to <citerefentry><refentrytitle>mmap</refentrytitle>
+        <manvolnum>2</manvolnum></citerefentry> allocation.  See <link
+        linkend="opt.dss"><mallctl>opt.dss</mallctl></link> for details.
+        </para></listitem>
+      </varlistentry>
+
+      <varlistentry id="stats.arenas.i.dirty_decay_ms">
+        <term>
+          <mallctl>stats.arenas.&lt;i&gt;.dirty_decay_ms</mallctl>
+          (<type>ssize_t</type>)
+          <literal>r-</literal>
+        </term>
+        <listitem><para>Approximate time in milliseconds from the creation of a
+        set of unused dirty pages until an equivalent set of unused dirty pages
+        is purged and/or reused.  See <link
+        linkend="opt.dirty_decay_ms"><mallctl>opt.dirty_decay_ms</mallctl></link>
+        for details.</para></listitem>
+      </varlistentry>
+
+      <varlistentry id="stats.arenas.i.muzzy_decay_ms">
+        <term>
+          <mallctl>stats.arenas.&lt;i&gt;.muzzy_decay_ms</mallctl>
+          (<type>ssize_t</type>)
+          <literal>r-</literal>
+        </term>
+        <listitem><para>Approximate time in milliseconds from the creation of a
+        set of unused muzzy pages until an equivalent set of unused muzzy pages
+        is purged and/or reused.  See <link
+        linkend="opt.muzzy_decay_ms"><mallctl>opt.muzzy_decay_ms</mallctl></link>
+        for details.</para></listitem>
+      </varlistentry>
+
+      <varlistentry id="stats.arenas.i.nthreads">
+        <term>
+          <mallctl>stats.arenas.&lt;i&gt;.nthreads</mallctl>
+          (<type>unsigned</type>)
+          <literal>r-</literal>
+        </term>
+        <listitem><para>Number of threads currently assigned to
+        arena.</para></listitem>
+      </varlistentry>
+
+      <varlistentry id="stats.arenas.i.uptime">
+        <term>
+          <mallctl>stats.arenas.&lt;i&gt;.uptime</mallctl>
+          (<type>uint64_t</type>)
+          <literal>r-</literal>
+        </term>
+        <listitem><para>Time elapsed (in nanoseconds) since the arena was
+        created.  If &lt;i&gt; equals <constant>0</constant> or
+        <constant>MALLCTL_ARENAS_ALL</constant>, this is the uptime since malloc
+        initialization.</para></listitem>
+      </varlistentry>
+
+      <varlistentry id="stats.arenas.i.pactive">
+        <term>
+          <mallctl>stats.arenas.&lt;i&gt;.pactive</mallctl>
+          (<type>size_t</type>)
+          <literal>r-</literal>
+        </term>
+        <listitem><para>Number of pages in active extents.</para></listitem>
+      </varlistentry>
+
+      <varlistentry id="stats.arenas.i.pdirty">
+        <term>
+          <mallctl>stats.arenas.&lt;i&gt;.pdirty</mallctl>
+          (<type>size_t</type>)
+          <literal>r-</literal>
+        </term>
+        <listitem><para>Number of pages within unused extents that are
+        potentially dirty, and for which <function>madvise()</function> or
+        similar has not been called.  See <link
+        linkend="opt.dirty_decay_ms"><mallctl>opt.dirty_decay_ms</mallctl></link>
+        for a description of dirty pages.</para></listitem>
+      </varlistentry>
+
+      <varlistentry id="stats.arenas.i.pmuzzy">
+        <term>
+          <mallctl>stats.arenas.&lt;i&gt;.pmuzzy</mallctl>
+          (<type>size_t</type>)
+          <literal>r-</literal>
+        </term>
+        <listitem><para>Number of pages within unused extents that are muzzy.
+        See <link
+        linkend="opt.muzzy_decay_ms"><mallctl>opt.muzzy_decay_ms</mallctl></link>
+        for a description of muzzy pages.</para></listitem>
+      </varlistentry>
+
+      <varlistentry id="stats.arenas.i.mapped">
+        <term>
+          <mallctl>stats.arenas.&lt;i&gt;.mapped</mallctl>
+          (<type>size_t</type>)
+          <literal>r-</literal>
+          [<option>--enable-stats</option>]
+        </term>
+        <listitem><para>Number of mapped bytes.</para></listitem>
+      </varlistentry>
+
+      <varlistentry id="stats.arenas.i.retained">
+        <term>
+          <mallctl>stats.arenas.&lt;i&gt;.retained</mallctl>
+          (<type>size_t</type>)
+          <literal>r-</literal>
+          [<option>--enable-stats</option>]
+        </term>
+        <listitem><para>Number of retained bytes.  See <link
+        linkend="stats.retained"><mallctl>stats.retained</mallctl></link> for
+        details.</para></listitem>
+      </varlistentry>
+
+      <varlistentry id="stats.arenas.i.extent_avail">
+        <term>
+          <mallctl>stats.arenas.&lt;i&gt;.extent_avail</mallctl>
+          (<type>size_t</type>)
+          <literal>r-</literal>
+          [<option>--enable-stats</option>]
+        </term>
+        <listitem><para>Number of allocated (but unused) extent structs in this
+	arena.</para></listitem>
+      </varlistentry>
+
+      <varlistentry id="stats.arenas.i.base">
+        <term>
+          <mallctl>stats.arenas.&lt;i&gt;.base</mallctl>
+          (<type>size_t</type>)
+          <literal>r-</literal>
+          [<option>--enable-stats</option>]
+        </term>
+        <listitem><para>
+        Number of bytes dedicated to bootstrap-sensitive allocator metadata
+        structures.</para></listitem>
+      </varlistentry>
+
+      <varlistentry id="stats.arenas.i.internal">
+        <term>
+          <mallctl>stats.arenas.&lt;i&gt;.internal</mallctl>
+          (<type>size_t</type>)
+          <literal>r-</literal>
+          [<option>--enable-stats</option>]
+        </term>
+        <listitem><para>Number of bytes dedicated to internal allocations.
+        Internal allocations differ from application-originated allocations in
+        that they are for internal use, and that they are omitted from heap
+        profiles.</para></listitem>
+      </varlistentry>
+
+      <varlistentry id="stats.arenas.i.metadata_thp">
+        <term>
+          <mallctl>stats.arenas.&lt;i&gt;.metadata_thp</mallctl>
+          (<type>size_t</type>)
+          <literal>r-</literal>
+          [<option>--enable-stats</option>]
+        </term>
+        <listitem><para>Number of transparent huge pages (THP) used for
+        metadata.  See <link linkend="opt.metadata_thp">opt.metadata_thp</link>
+        for details.</para></listitem>
+      </varlistentry>
+
+      <varlistentry id="stats.arenas.i.resident">
+        <term>
+          <mallctl>stats.arenas.&lt;i&gt;.resident</mallctl>
+          (<type>size_t</type>)
+          <literal>r-</literal>
+          [<option>--enable-stats</option>]
+        </term>
+        <listitem><para>Maximum number of bytes in physically resident data
+        pages mapped by the arena, comprising all pages dedicated to allocator
+        metadata, pages backing active allocations, and unused dirty pages.
+        This is a maximum rather than precise because pages may not actually be
+        physically resident if they correspond to demand-zeroed virtual memory
+        that has not yet been touched.  This is a multiple of the page
+        size.</para></listitem>
+      </varlistentry>
+
+      <varlistentry id="stats.arenas.i.dirty_npurge">
+        <term>
+          <mallctl>stats.arenas.&lt;i&gt;.dirty_npurge</mallctl>
+          (<type>uint64_t</type>)
+          <literal>r-</literal>
+          [<option>--enable-stats</option>]
+        </term>
+        <listitem><para>Number of dirty page purge sweeps performed.
+        </para></listitem>
+      </varlistentry>
+
+      <varlistentry id="stats.arenas.i.dirty_nmadvise">
+        <term>
+          <mallctl>stats.arenas.&lt;i&gt;.dirty_nmadvise</mallctl>
+          (<type>uint64_t</type>)
+          <literal>r-</literal>
+          [<option>--enable-stats</option>]
+        </term>
+        <listitem><para>Number of <function>madvise()</function> or similar
+        calls made to purge dirty pages.</para></listitem>
+      </varlistentry>
+
+      <varlistentry id="stats.arenas.i.dirty_purged">
+        <term>
+          <mallctl>stats.arenas.&lt;i&gt;.dirty_purged</mallctl>
+          (<type>uint64_t</type>)
+          <literal>r-</literal>
+          [<option>--enable-stats</option>]
+        </term>
+        <listitem><para>Number of dirty pages purged.</para></listitem>
+      </varlistentry>
+
+      <varlistentry id="stats.arenas.i.muzzy_npurge">
+        <term>
+          <mallctl>stats.arenas.&lt;i&gt;.muzzy_npurge</mallctl>
+          (<type>uint64_t</type>)
+          <literal>r-</literal>
+          [<option>--enable-stats</option>]
+        </term>
+        <listitem><para>Number of muzzy page purge sweeps performed.
+        </para></listitem>
+      </varlistentry>
+
+      <varlistentry id="stats.arenas.i.muzzy_nmadvise">
+        <term>
+          <mallctl>stats.arenas.&lt;i&gt;.muzzy_nmadvise</mallctl>
+          (<type>uint64_t</type>)
+          <literal>r-</literal>
+          [<option>--enable-stats</option>]
+        </term>
+        <listitem><para>Number of <function>madvise()</function> or similar
+        calls made to purge muzzy pages.</para></listitem>
+      </varlistentry>
+
+      <varlistentry id="stats.arenas.i.muzzy_purged">
+        <term>
+          <mallctl>stats.arenas.&lt;i&gt;.muzzy_purged</mallctl>
+          (<type>uint64_t</type>)
+          <literal>r-</literal>
+          [<option>--enable-stats</option>]
+        </term>
+        <listitem><para>Number of muzzy pages purged.</para></listitem>
+      </varlistentry>
+
+      <varlistentry id="stats.arenas.i.small.allocated">
+        <term>
+          <mallctl>stats.arenas.&lt;i&gt;.small.allocated</mallctl>
+          (<type>size_t</type>)
+          <literal>r-</literal>
+          [<option>--enable-stats</option>]
+        </term>
+        <listitem><para>Number of bytes currently allocated by small objects.
+        </para></listitem>
+      </varlistentry>
+
+      <varlistentry id="stats.arenas.i.small.nmalloc">
+        <term>
+          <mallctl>stats.arenas.&lt;i&gt;.small.nmalloc</mallctl>
+          (<type>uint64_t</type>)
+          <literal>r-</literal>
+          [<option>--enable-stats</option>]
+        </term>
+        <listitem><para>Cumulative number of times a small allocation was
+        requested from the arena's bins, whether to fill the relevant tcache if
+        <link linkend="opt.tcache"><mallctl>opt.tcache</mallctl></link> is
+        enabled, or to directly satisfy an allocation request
+        otherwise.</para></listitem>
+      </varlistentry>
+
+      <varlistentry id="stats.arenas.i.small.ndalloc">
+        <term>
+          <mallctl>stats.arenas.&lt;i&gt;.small.ndalloc</mallctl>
+          (<type>uint64_t</type>)
+          <literal>r-</literal>
+          [<option>--enable-stats</option>]
+        </term>
+        <listitem><para>Cumulative number of times a small allocation was
+        returned to the arena's bins, whether to flush the relevant tcache if
+        <link linkend="opt.tcache"><mallctl>opt.tcache</mallctl></link> is
+        enabled, or to directly deallocate an allocation
+        otherwise.</para></listitem>
+      </varlistentry>
+
+      <varlistentry id="stats.arenas.i.small.nrequests">
+        <term>
+          <mallctl>stats.arenas.&lt;i&gt;.small.nrequests</mallctl>
+          (<type>uint64_t</type>)
+          <literal>r-</literal>
+          [<option>--enable-stats</option>]
+        </term>
+        <listitem><para>Cumulative number of allocation requests satisfied by
+        all bin size classes.</para></listitem>
+      </varlistentry>
+
+      <varlistentry id="stats.arenas.i.small.nfills">
+        <term>
+          <mallctl>stats.arenas.&lt;i&gt;.small.nfills</mallctl>
+          (<type>uint64_t</type>)
+          <literal>r-</literal>
+          [<option>--enable-stats</option>]
+        </term>
+        <listitem><para>Cumulative number of tcache fills by all small size
+	classes.</para></listitem>
+      </varlistentry>
+
+      <varlistentry id="stats.arenas.i.small.nflushes">
+        <term>
+          <mallctl>stats.arenas.&lt;i&gt;.small.nflushes</mallctl>
+          (<type>uint64_t</type>)
+          <literal>r-</literal>
+          [<option>--enable-stats</option>]
+        </term>
+        <listitem><para>Cumulative number of tcache flushes by all small size
+        classes.</para></listitem>
+      </varlistentry>
+
+      <varlistentry id="stats.arenas.i.large.allocated">
+        <term>
+          <mallctl>stats.arenas.&lt;i&gt;.large.allocated</mallctl>
+          (<type>size_t</type>)
+          <literal>r-</literal>
+          [<option>--enable-stats</option>]
+        </term>
+        <listitem><para>Number of bytes currently allocated by large objects.
+        </para></listitem>
+      </varlistentry>
+
+      <varlistentry id="stats.arenas.i.large.nmalloc">
+        <term>
+          <mallctl>stats.arenas.&lt;i&gt;.large.nmalloc</mallctl>
+          (<type>uint64_t</type>)
+          <literal>r-</literal>
+          [<option>--enable-stats</option>]
+        </term>
+        <listitem><para>Cumulative number of times a large extent was allocated
+        from the arena, whether to fill the relevant tcache if <link
+        linkend="opt.tcache"><mallctl>opt.tcache</mallctl></link> is enabled and
+        the size class is within the range being cached, or to directly satisfy
+        an allocation request otherwise.</para></listitem>
+      </varlistentry>
+
+      <varlistentry id="stats.arenas.i.large.ndalloc">
+        <term>
+          <mallctl>stats.arenas.&lt;i&gt;.large.ndalloc</mallctl>
+          (<type>uint64_t</type>)
+          <literal>r-</literal>
+          [<option>--enable-stats</option>]
+        </term>
+        <listitem><para>Cumulative number of times a large extent was returned
+        to the arena, whether to flush the relevant tcache if <link
+        linkend="opt.tcache"><mallctl>opt.tcache</mallctl></link> is enabled and
+        the size class is within the range being cached, or to directly
+        deallocate an allocation otherwise.</para></listitem>
+      </varlistentry>
+
+      <varlistentry id="stats.arenas.i.large.nrequests">
+        <term>
+          <mallctl>stats.arenas.&lt;i&gt;.large.nrequests</mallctl>
+          (<type>uint64_t</type>)
+          <literal>r-</literal>
+          [<option>--enable-stats</option>]
+        </term>
+        <listitem><para>Cumulative number of allocation requests satisfied by
+        all large size classes.</para></listitem>
+      </varlistentry>
+
+      <varlistentry id="stats.arenas.i.large.nfills">
+        <term>
+          <mallctl>stats.arenas.&lt;i&gt;.large.nfills</mallctl>
+          (<type>uint64_t</type>)
+          <literal>r-</literal>
+          [<option>--enable-stats</option>]
+        </term>
+        <listitem><para>Cumulative number of tcache fills by all large size
+	classes.</para></listitem>
+      </varlistentry>
+
+      <varlistentry id="stats.arenas.i.large.nflushes">
+        <term>
+          <mallctl>stats.arenas.&lt;i&gt;.large.nflushes</mallctl>
+          (<type>uint64_t</type>)
+          <literal>r-</literal>
+          [<option>--enable-stats</option>]
+        </term>
+        <listitem><para>Cumulative number of tcache flushes by all large size
+        classes.</para></listitem>
+      </varlistentry>
+
+      <varlistentry id="stats.arenas.i.bins.j.nmalloc">
+        <term>
+          <mallctl>stats.arenas.&lt;i&gt;.bins.&lt;j&gt;.nmalloc</mallctl>
+          (<type>uint64_t</type>)
+          <literal>r-</literal>
+          [<option>--enable-stats</option>]
+        </term>
+        <listitem><para>Cumulative number of times a bin region of the
+        corresponding size class was allocated from the arena, whether to fill
+        the relevant tcache if <link
+        linkend="opt.tcache"><mallctl>opt.tcache</mallctl></link> is enabled, or
+        to directly satisfy an allocation request otherwise.</para></listitem>
+      </varlistentry>
+
+      <varlistentry id="stats.arenas.i.bins.j.ndalloc">
+        <term>
+          <mallctl>stats.arenas.&lt;i&gt;.bins.&lt;j&gt;.ndalloc</mallctl>
+          (<type>uint64_t</type>)
+          <literal>r-</literal>
+          [<option>--enable-stats</option>]
+        </term>
+        <listitem><para>Cumulative number of times a bin region of the
+        corresponding size class was returned to the arena, whether to flush the
+        relevant tcache if <link
+        linkend="opt.tcache"><mallctl>opt.tcache</mallctl></link> is enabled, or
+        to directly deallocate an allocation otherwise.</para></listitem>
+      </varlistentry>
+
+      <varlistentry id="stats.arenas.i.bins.j.nrequests">
+        <term>
+          <mallctl>stats.arenas.&lt;i&gt;.bins.&lt;j&gt;.nrequests</mallctl>
+          (<type>uint64_t</type>)
+          <literal>r-</literal>
+          [<option>--enable-stats</option>]
+        </term>
+        <listitem><para>Cumulative number of allocation requests satisfied by
+        bin regions of the corresponding size class.</para></listitem>
+      </varlistentry>
+
+      <varlistentry id="stats.arenas.i.bins.j.curregs">
+        <term>
+          <mallctl>stats.arenas.&lt;i&gt;.bins.&lt;j&gt;.curregs</mallctl>
+          (<type>size_t</type>)
+          <literal>r-</literal>
+          [<option>--enable-stats</option>]
+        </term>
+        <listitem><para>Current number of regions for this size
+        class.</para></listitem>
+      </varlistentry>
+
+      <varlistentry id="stats.arenas.i.bins.j.nfills">
+        <term>
+          <mallctl>stats.arenas.&lt;i&gt;.bins.&lt;j&gt;.nfills</mallctl>
+          (<type>uint64_t</type>)
+          <literal>r-</literal>
+        </term>
+        <listitem><para>Cumulative number of tcache fills.</para></listitem>
+      </varlistentry>
+
+      <varlistentry id="stats.arenas.i.bins.j.nflushes">
+        <term>
+          <mallctl>stats.arenas.&lt;i&gt;.bins.&lt;j&gt;.nflushes</mallctl>
+          (<type>uint64_t</type>)
+          <literal>r-</literal>
+        </term>
+        <listitem><para>Cumulative number of tcache flushes.</para></listitem>
+      </varlistentry>
+
+      <varlistentry id="stats.arenas.i.bins.j.nslabs">
+        <term>
+          <mallctl>stats.arenas.&lt;i&gt;.bins.&lt;j&gt;.nslabs</mallctl>
+          (<type>uint64_t</type>)
+          <literal>r-</literal>
+          [<option>--enable-stats</option>]
+        </term>
+        <listitem><para>Cumulative number of slabs created.</para></listitem>
+      </varlistentry>
+
+      <varlistentry id="stats.arenas.i.bins.j.nreslabs">
+        <term>
+          <mallctl>stats.arenas.&lt;i&gt;.bins.&lt;j&gt;.nreslabs</mallctl>
+          (<type>uint64_t</type>)
+          <literal>r-</literal>
+          [<option>--enable-stats</option>]
+        </term>
+        <listitem><para>Cumulative number of times the current slab from which
+        to allocate changed.</para></listitem>
+      </varlistentry>
+
+      <varlistentry id="stats.arenas.i.bins.j.curslabs">
+        <term>
+          <mallctl>stats.arenas.&lt;i&gt;.bins.&lt;j&gt;.curslabs</mallctl>
+          (<type>size_t</type>)
+          <literal>r-</literal>
+          [<option>--enable-stats</option>]
+        </term>
+        <listitem><para>Current number of slabs.</para></listitem>
+      </varlistentry>
+
+
+      <varlistentry id="stats.arenas.i.bins.j.nonfull_slabs">
+        <term>
+          <mallctl>stats.arenas.&lt;i&gt;.bins.&lt;j&gt;.nonfull_slabs</mallctl>
+          (<type>size_t</type>)
+          <literal>r-</literal>
+          [<option>--enable-stats</option>]
+        </term>
+        <listitem><para>Current number of nonfull slabs.</para></listitem>
+      </varlistentry>
+
+      <varlistentry id="stats.arenas.i.bins.mutex">
+        <term>
+          <mallctl>stats.arenas.&lt;i&gt;.bins.&lt;j&gt;.mutex.{counter}</mallctl>
+          (<type>counter specific type</type>) <literal>r-</literal>
+          [<option>--enable-stats</option>]
+        </term>
+        <listitem><para>Statistics on
+        <varname>arena.&lt;i&gt;.bins.&lt;j&gt;</varname> mutex (arena bin
+        scope; bin operation related).  <mallctl>{counter}</mallctl> is one of
+        the counters in <link linkend="mutex_counters">mutex profiling
+        counters</link>.</para></listitem>
+      </varlistentry>
+
+      <varlistentry id="stats.arenas.i.extents.n">
+        <term>
+          <mallctl>stats.arenas.&lt;i&gt;.extents.&lt;j&gt;.n{extent_type}</mallctl>
+          (<type>size_t</type>)
+          <literal>r-</literal>
+          [<option>--enable-stats</option>]
+        </term>
+        <listitem><para> Number of extents of the given type in this arena in
+	the bucket corresponding to page size index &lt;j&gt;. The extent type
+	is one of dirty, muzzy, or retained.</para></listitem>
+      </varlistentry>
+
+      <varlistentry id="stats.arenas.i.extents.bytes">
+        <term>
+          <mallctl>stats.arenas.&lt;i&gt;.extents.&lt;j&gt;.{extent_type}_bytes</mallctl>
+          (<type>size_t</type>)
+          <literal>r-</literal>
+          [<option>--enable-stats</option>]
+        </term>
+	<listitem><para> Sum of the bytes managed by extents of the given type
+	in this arena in the bucket corresponding to page size index &lt;j&gt;.
+	The extent type is one of dirty, muzzy, or retained.</para></listitem>
+      </varlistentry>
+
+      <varlistentry id="stats.arenas.i.lextents.j.nmalloc">
+        <term>
+          <mallctl>stats.arenas.&lt;i&gt;.lextents.&lt;j&gt;.nmalloc</mallctl>
+          (<type>uint64_t</type>)
+          <literal>r-</literal>
+          [<option>--enable-stats</option>]
+        </term>
+        <listitem><para>Cumulative number of times a large extent of the
+        corresponding size class was allocated from the arena, whether to fill
+        the relevant tcache if <link
+        linkend="opt.tcache"><mallctl>opt.tcache</mallctl></link> is enabled and
+        the size class is within the range being cached, or to directly satisfy
+        an allocation request otherwise.</para></listitem>
+      </varlistentry>
+
+      <varlistentry id="stats.arenas.i.lextents.j.ndalloc">
+        <term>
+          <mallctl>stats.arenas.&lt;i&gt;.lextents.&lt;j&gt;.ndalloc</mallctl>
+          (<type>uint64_t</type>)
+          <literal>r-</literal>
+          [<option>--enable-stats</option>]
+        </term>
+        <listitem><para>Cumulative number of times a large extent of the
+        corresponding size class was returned to the arena, whether to flush the
+        relevant tcache if <link
+        linkend="opt.tcache"><mallctl>opt.tcache</mallctl></link> is enabled and
+        the size class is within the range being cached, or to directly
+        deallocate an allocation otherwise.</para></listitem>
+      </varlistentry>
+
+      <varlistentry id="stats.arenas.i.lextents.j.nrequests">
+        <term>
+          <mallctl>stats.arenas.&lt;i&gt;.lextents.&lt;j&gt;.nrequests</mallctl>
+          (<type>uint64_t</type>)
+          <literal>r-</literal>
+          [<option>--enable-stats</option>]
+        </term>
+        <listitem><para>Cumulative number of allocation requests satisfied by
+        large extents of the corresponding size class.</para></listitem>
+      </varlistentry>
+
+      <varlistentry id="stats.arenas.i.lextents.j.curlextents">
+        <term>
+          <mallctl>stats.arenas.&lt;i&gt;.lextents.&lt;j&gt;.curlextents</mallctl>
+          (<type>size_t</type>)
+          <literal>r-</literal>
+          [<option>--enable-stats</option>]
+        </term>
+        <listitem><para>Current number of large allocations for this size class.
+        </para></listitem>
+      </varlistentry>
+
+      <varlistentry id="stats.arenas.i.mutexes.large">
+        <term>
+          <mallctl>stats.arenas.&lt;i&gt;.mutexes.large.{counter}</mallctl>
+          (<type>counter specific type</type>) <literal>r-</literal>
+          [<option>--enable-stats</option>]
+        </term>
+        <listitem><para>Statistics on <varname>arena.&lt;i&gt;.large</varname>
+        mutex (arena scope; large allocation related).
+        <mallctl>{counter}</mallctl> is one of the counters in <link
+        linkend="mutex_counters">mutex profiling
+        counters</link>.</para></listitem>
+      </varlistentry>
+
+      <varlistentry id="stats.arenas.i.mutexes.extent_avail">
+        <term>
+          <mallctl>stats.arenas.&lt;i&gt;.mutexes.extent_avail.{counter}</mallctl>
+          (<type>counter specific type</type>) <literal>r-</literal>
+          [<option>--enable-stats</option>]
+        </term>
+        <listitem><para>Statistics on <varname>arena.&lt;i&gt;.extent_avail
+        </varname> mutex (arena scope; extent avail related).
+        <mallctl>{counter}</mallctl> is one of the counters in <link
+        linkend="mutex_counters">mutex profiling
+        counters</link>.</para></listitem>
+      </varlistentry>
+
+      <varlistentry id="stats.arenas.i.mutexes.extents_dirty">
+        <term>
+          <mallctl>stats.arenas.&lt;i&gt;.mutexes.extents_dirty.{counter}</mallctl>
+          (<type>counter specific type</type>) <literal>r-</literal>
+          [<option>--enable-stats</option>]
+        </term>
+        <listitem><para>Statistics on <varname>arena.&lt;i&gt;.extents_dirty
+        </varname> mutex (arena scope; dirty extents related).
+        <mallctl>{counter}</mallctl> is one of the counters in <link
+        linkend="mutex_counters">mutex profiling
+        counters</link>.</para></listitem>
+      </varlistentry>
+
+      <varlistentry id="stats.arenas.i.mutexes.extents_muzzy">
+        <term>
+          <mallctl>stats.arenas.&lt;i&gt;.mutexes.extents_muzzy.{counter}</mallctl>
+          (<type>counter specific type</type>) <literal>r-</literal>
+          [<option>--enable-stats</option>]
+        </term>
+        <listitem><para>Statistics on <varname>arena.&lt;i&gt;.extents_muzzy
+        </varname> mutex (arena scope; muzzy extents related).
+        <mallctl>{counter}</mallctl> is one of the counters in <link
+        linkend="mutex_counters">mutex profiling
+        counters</link>.</para></listitem>
+      </varlistentry>
+
+      <varlistentry id="stats.arenas.i.mutexes.extents_retained">
+        <term>
+          <mallctl>stats.arenas.&lt;i&gt;.mutexes.extents_retained.{counter}</mallctl>
+          (<type>counter specific type</type>) <literal>r-</literal>
+          [<option>--enable-stats</option>]
+        </term>
+        <listitem><para>Statistics on <varname>arena.&lt;i&gt;.extents_retained
+        </varname> mutex (arena scope; retained extents related).
+        <mallctl>{counter}</mallctl> is one of the counters in <link
+        linkend="mutex_counters">mutex profiling
+        counters</link>.</para></listitem>
+      </varlistentry>
+
+      <varlistentry id="stats.arenas.i.mutexes.decay_dirty">
+        <term>
+          <mallctl>stats.arenas.&lt;i&gt;.mutexes.decay_dirty.{counter}</mallctl>
+          (<type>counter specific type</type>) <literal>r-</literal>
+          [<option>--enable-stats</option>]
+        </term>
+        <listitem><para>Statistics on <varname>arena.&lt;i&gt;.decay_dirty
+        </varname> mutex (arena scope; decay for dirty pages related).
+        <mallctl>{counter}</mallctl> is one of the counters in <link
+        linkend="mutex_counters">mutex profiling
+        counters</link>.</para></listitem>
+      </varlistentry>
+
+      <varlistentry id="stats.arenas.i.mutexes.decay_muzzy">
+        <term>
+          <mallctl>stats.arenas.&lt;i&gt;.mutexes.decay_muzzy.{counter}</mallctl>
+          (<type>counter specific type</type>) <literal>r-</literal>
+          [<option>--enable-stats</option>]
+        </term>
+        <listitem><para>Statistics on <varname>arena.&lt;i&gt;.decay_muzzy
+        </varname> mutex (arena scope; decay for muzzy pages related).
+        <mallctl>{counter}</mallctl> is one of the counters in <link
+        linkend="mutex_counters">mutex profiling
+        counters</link>.</para></listitem>
+      </varlistentry>
+
+      <varlistentry id="stats.arenas.i.mutexes.base">
+        <term>
+          <mallctl>stats.arenas.&lt;i&gt;.mutexes.base.{counter}</mallctl>
+          (<type>counter specific type</type>) <literal>r-</literal>
+          [<option>--enable-stats</option>]
+        </term>
+        <listitem><para>Statistics on <varname>arena.&lt;i&gt;.base</varname>
+        mutex (arena scope; base allocator related).
+        <mallctl>{counter}</mallctl> is one of the counters in <link
+        linkend="mutex_counters">mutex profiling
+        counters</link>.</para></listitem>
+      </varlistentry>
+
+      <varlistentry id="stats.arenas.i.mutexes.tcache_list">
+        <term>
+          <mallctl>stats.arenas.&lt;i&gt;.mutexes.tcache_list.{counter}</mallctl>
+          (<type>counter specific type</type>) <literal>r-</literal>
+          [<option>--enable-stats</option>]
+        </term>
+        <listitem><para>Statistics on
+        <varname>arena.&lt;i&gt;.tcache_list</varname> mutex (arena scope;
+        tcache to arena association related).  This mutex is expected to be
+        accessed less often.  <mallctl>{counter}</mallctl> is one of the
+        counters in <link linkend="mutex_counters">mutex profiling
+        counters</link>.</para></listitem>
+      </varlistentry>
+
+    </variablelist>
+  </refsect1>
+  <refsect1 id="heap_profile_format">
+    <title>HEAP PROFILE FORMAT</title>
+    <para>Although the heap profiling functionality was originally designed to
+    be compatible with the
+    <command>pprof</command> command that is developed as part of the <ulink
+    url="http://code.google.com/p/gperftools/">gperftools
+    package</ulink>, the addition of per thread heap profiling functionality
+    required a different heap profile format.  The <command>jeprof</command>
+    command is derived from <command>pprof</command>, with enhancements to
+    support the heap profile format described here.</para>
+
+    <para>In the following hypothetical heap profile, <constant>[...]</constant>
+    indicates elision for the sake of compactness.  <programlisting><![CDATA[
+heap_v2/524288
+  t*: 28106: 56637512 [0: 0]
+  [...]
+  t3: 352: 16777344 [0: 0]
+  [...]
+  t99: 17754: 29341640 [0: 0]
+  [...]
+@ 0x5f86da8 0x5f5a1dc [...] 0x29e4d4e 0xa200316 0xabb2988 [...]
+  t*: 13: 6688 [0: 0]
+  t3: 12: 6496 [0: 0]
+  t99: 1: 192 [0: 0]
+[...]
+
+MAPPED_LIBRARIES:
+[...]]]></programlisting> The following matches the above heap profile, but most
+tokens are replaced with <constant>&lt;description&gt;</constant> to indicate
+descriptions of the corresponding fields.  <programlisting><![CDATA[
+<heap_profile_format_version>/<mean_sample_interval>
+  <aggregate>: <curobjs>: <curbytes> [<cumobjs>: <cumbytes>]
+  [...]
+  <thread_3_aggregate>: <curobjs>: <curbytes> [<cumobjs>: <cumbytes>]
+  [...]
+  <thread_99_aggregate>: <curobjs>: <curbytes> [<cumobjs>: <cumbytes>]
+  [...]
+@ <top_frame> <frame> [...] <frame> <frame> <frame> [...]
+  <backtrace_aggregate>: <curobjs>: <curbytes> [<cumobjs>: <cumbytes>]
+  <backtrace_thread_3>: <curobjs>: <curbytes> [<cumobjs>: <cumbytes>]
+  <backtrace_thread_99>: <curobjs>: <curbytes> [<cumobjs>: <cumbytes>]
+[...]
+
+MAPPED_LIBRARIES:
+</proc/<pid>/maps>]]></programlisting></para>
+  </refsect1>
+
+  <refsect1 id="debugging_malloc_problems">
+    <title>DEBUGGING MALLOC PROBLEMS</title>
+    <para>When debugging, it is a good idea to configure/build jemalloc with
+    the <option>--enable-debug</option> and <option>--enable-fill</option>
+    options, and recompile the program with suitable options and symbols for
+    debugger support.  When so configured, jemalloc incorporates a wide variety
+    of run-time assertions that catch application errors such as double-free,
+    write-after-free, etc.</para>
+
+    <para>Programs often accidentally depend on <quote>uninitialized</quote>
+    memory actually being filled with zero bytes.  Junk filling
+    (see the <link linkend="opt.junk"><mallctl>opt.junk</mallctl></link>
+    option) tends to expose such bugs in the form of obviously incorrect
+    results and/or coredumps.  Conversely, zero
+    filling (see the <link
+    linkend="opt.zero"><mallctl>opt.zero</mallctl></link> option) eliminates
+    the symptoms of such bugs.  Between these two options, it is usually
+    possible to quickly detect, diagnose, and eliminate such bugs.</para>
+
+    <para>This implementation does not provide much detail about the problems
+    it detects, because the performance impact for storing such information
+    would be prohibitive.</para>
+  </refsect1>
+  <refsect1 id="diagnostic_messages">
+    <title>DIAGNOSTIC MESSAGES</title>
+    <para>If any of the memory allocation/deallocation functions detect an
+    error or warning condition, a message will be printed to file descriptor
+    <constant>STDERR_FILENO</constant>.  Errors will result in the process
+    dumping core.  If the <link
+    linkend="opt.abort"><mallctl>opt.abort</mallctl></link> option is set, most
+    warnings are treated as errors.</para>
+
+    <para>The <varname>malloc_message</varname> variable allows the programmer
+    to override the function which emits the text strings forming the errors
+    and warnings if for some reason the <constant>STDERR_FILENO</constant> file
+    descriptor is not suitable for this.
+    <function>malloc_message()</function> takes the
+    <parameter>cbopaque</parameter> pointer argument that is
+    <constant>NULL</constant> unless overridden by the arguments in a call to
+    <function>malloc_stats_print()</function>, followed by a string
+    pointer.  Please note that doing anything which tries to allocate memory in
+    this function is likely to result in a crash or deadlock.</para>
+
+    <para>All messages are prefixed by
+    <quote><computeroutput>&lt;jemalloc&gt;: </computeroutput></quote>.</para>
+  </refsect1>
+  <refsect1 id="return_values">
+    <title>RETURN VALUES</title>
+    <refsect2>
+      <title>Standard API</title>
+      <para>The <function>malloc()</function> and
+      <function>calloc()</function> functions return a pointer to the
+      allocated memory if successful; otherwise a <constant>NULL</constant>
+      pointer is returned and <varname>errno</varname> is set to
+      <errorname>ENOMEM</errorname>.</para>
+
+      <para>The <function>posix_memalign()</function> function
+      returns the value 0 if successful; otherwise it returns an error value.
+      The <function>posix_memalign()</function> function will fail
+      if:
+        <variablelist>
+          <varlistentry>
+            <term><errorname>EINVAL</errorname></term>
+
+            <listitem><para>The <parameter>alignment</parameter> parameter is
+            not a power of 2 at least as large as
+            <code language="C">sizeof(<type>void *</type>)</code>.
+            </para></listitem>
+          </varlistentry>
+          <varlistentry>
+            <term><errorname>ENOMEM</errorname></term>
+
+            <listitem><para>Memory allocation error.</para></listitem>
+          </varlistentry>
+        </variablelist>
+      </para>
+
+      <para>The <function>aligned_alloc()</function> function returns
+      a pointer to the allocated memory if successful; otherwise a
+      <constant>NULL</constant> pointer is returned and
+      <varname>errno</varname> is set.  The
+      <function>aligned_alloc()</function> function will fail if:
+        <variablelist>
+          <varlistentry>
+            <term><errorname>EINVAL</errorname></term>
+
+            <listitem><para>The <parameter>alignment</parameter> parameter is
+            not a power of 2.
+            </para></listitem>
+          </varlistentry>
+          <varlistentry>
+            <term><errorname>ENOMEM</errorname></term>
+
+            <listitem><para>Memory allocation error.</para></listitem>
+          </varlistentry>
+        </variablelist>
+      </para>
+
+      <para>The <function>realloc()</function> function returns a
+      pointer, possibly identical to <parameter>ptr</parameter>, to the
+      allocated memory if successful; otherwise a <constant>NULL</constant>
+      pointer is returned, and <varname>errno</varname> is set to
+      <errorname>ENOMEM</errorname> if the error was the result of an
+      allocation failure.  The <function>realloc()</function>
+      function always leaves the original buffer intact when an error occurs.
+      </para>
+
+      <para>The <function>free()</function> function returns no
+      value.</para>
+    </refsect2>
+    <refsect2>
+      <title>Non-standard API</title>
+      <para>The <function>mallocx()</function> and
+      <function>rallocx()</function> functions return a pointer to
+      the allocated memory if successful; otherwise a <constant>NULL</constant>
+      pointer is returned to indicate insufficient contiguous memory was
+      available to service the allocation request.  </para>
+
+      <para>The <function>xallocx()</function> function returns the
+      real size of the resulting resized allocation pointed to by
+      <parameter>ptr</parameter>, which is a value less than
+      <parameter>size</parameter> if the allocation could not be adequately
+      grown in place.  </para>
+
+      <para>The <function>sallocx()</function> function returns the
+      real size of the allocation pointed to by <parameter>ptr</parameter>.
+      </para>
+
+      <para>The <function>nallocx()</function> returns the real size
+      that would result from a successful equivalent
+      <function>mallocx()</function> function call, or zero if
+      insufficient memory is available to perform the size computation.  </para>
+
+      <para>The <function>mallctl()</function>,
+      <function>mallctlnametomib()</function>, and
+      <function>mallctlbymib()</function> functions return 0 on
+      success; otherwise they return an error value.  The functions will fail
+      if:
+        <variablelist>
+          <varlistentry>
+            <term><errorname>EINVAL</errorname></term>
+
+            <listitem><para><parameter>newp</parameter> is not
+            <constant>NULL</constant>, and <parameter>newlen</parameter> is too
+            large or too small.  Alternatively, <parameter>*oldlenp</parameter>
+            is too large or too small; when it happens, except for a very few
+            cases explicitly documented otherwise, as much data as possible
+            are read despite the error, with the amount of data read being
+            recorded in <parameter>*oldlenp</parameter>.</para></listitem>
+          </varlistentry>
+          <varlistentry>
+            <term><errorname>ENOENT</errorname></term>
+
+            <listitem><para><parameter>name</parameter> or
+            <parameter>mib</parameter> specifies an unknown/invalid
+            value.</para></listitem>
+          </varlistentry>
+          <varlistentry>
+            <term><errorname>EPERM</errorname></term>
+
+            <listitem><para>Attempt to read or write void value, or attempt to
+            write read-only value.</para></listitem>
+          </varlistentry>
+          <varlistentry>
+            <term><errorname>EAGAIN</errorname></term>
+
+            <listitem><para>A memory allocation failure
+            occurred.</para></listitem>
+          </varlistentry>
+          <varlistentry>
+            <term><errorname>EFAULT</errorname></term>
+
+            <listitem><para>An interface with side effects failed in some way
+            not directly related to <function>mallctl*()</function>
+            read/write processing.</para></listitem>
+          </varlistentry>
+        </variablelist>
+      </para>
+
+      <para>The <function>malloc_usable_size()</function> function
+      returns the usable size of the allocation pointed to by
+      <parameter>ptr</parameter>.  </para>
+    </refsect2>
+  </refsect1>
+  <refsect1 id="environment">
+    <title>ENVIRONMENT</title>
+    <para>The following environment variable affects the execution of the
+    allocation functions:
+      <variablelist>
+        <varlistentry>
+          <term><envar>MALLOC_CONF</envar></term>
+
+          <listitem><para>If the environment variable
+          <envar>MALLOC_CONF</envar> is set, the characters it contains
+          will be interpreted as options.</para></listitem>
+        </varlistentry>
+      </variablelist>
+    </para>
+  </refsect1>
+  <refsect1 id="examples">
+    <title>EXAMPLES</title>
+    <para>To dump core whenever a problem occurs:
+      <screen>ln -s 'abort:true' /etc/malloc.conf</screen>
+    </para>
+    <para>To specify in the source that only one arena should be automatically
+    created:
+      <programlisting language="C"><![CDATA[
+malloc_conf = "narenas:1";]]></programlisting></para>
+  </refsect1>
+  <refsect1 id="see_also">
+    <title>SEE ALSO</title>
+    <para><citerefentry><refentrytitle>madvise</refentrytitle>
+    <manvolnum>2</manvolnum></citerefentry>,
+    <citerefentry><refentrytitle>mmap</refentrytitle>
+    <manvolnum>2</manvolnum></citerefentry>,
+    <citerefentry><refentrytitle>sbrk</refentrytitle>
+    <manvolnum>2</manvolnum></citerefentry>,
+    <citerefentry><refentrytitle>utrace</refentrytitle>
+    <manvolnum>2</manvolnum></citerefentry>,
+    <citerefentry><refentrytitle>alloca</refentrytitle>
+    <manvolnum>3</manvolnum></citerefentry>,
+    <citerefentry><refentrytitle>atexit</refentrytitle>
+    <manvolnum>3</manvolnum></citerefentry>,
+    <citerefentry><refentrytitle>getpagesize</refentrytitle>
+    <manvolnum>3</manvolnum></citerefentry></para>
+  </refsect1>
+  <refsect1 id="standards">
+    <title>STANDARDS</title>
+    <para>The <function>malloc()</function>,
+    <function>calloc()</function>,
+    <function>realloc()</function>, and
+    <function>free()</function> functions conform to ISO/IEC
+    9899:1990 (<quote>ISO C90</quote>).</para>
+
+    <para>The <function>posix_memalign()</function> function conforms
+    to IEEE Std 1003.1-2001 (<quote>POSIX.1</quote>).</para>
+  </refsect1>
+</refentry>
diff --git a/deps/jemalloc/doc/manpages.xsl.in b/deps/jemalloc/doc/manpages.xsl.in
new file mode 100644
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@@ -0,0 +1,4 @@
+<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform" version="1.0">
+  <xsl:import href="@XSLROOT@/manpages/docbook.xsl"/>
+  <xsl:import href="@abs_srcroot@doc/stylesheet.xsl"/>
+</xsl:stylesheet>
diff --git a/deps/jemalloc/doc/stylesheet.xsl b/deps/jemalloc/doc/stylesheet.xsl
new file mode 100644
index 0000000..619365d
--- /dev/null
+++ b/deps/jemalloc/doc/stylesheet.xsl
@@ -0,0 +1,10 @@
+<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform" version="1.0">
+  <xsl:param name="funcsynopsis.style">ansi</xsl:param>
+  <xsl:param name="function.parens" select="0"/>
+  <xsl:template match="function">
+    <xsl:call-template name="inline.monoseq"/>
+  </xsl:template>
+  <xsl:template match="mallctl">
+    <quote><xsl:call-template name="inline.monoseq"/></quote>
+  </xsl:template>
+</xsl:stylesheet>
diff --git a/deps/jemalloc/doc_internal/PROFILING_INTERNALS.md b/deps/jemalloc/doc_internal/PROFILING_INTERNALS.md
new file mode 100644
index 0000000..0a9f31c
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@@ -0,0 +1,127 @@
+# jemalloc profiling
+This describes the mathematical basis behind jemalloc's profiling implementation, as well as the implementation tricks that make it effective. Historically, the jemalloc profiling design simply copied tcmalloc's. The implementation has since diverged, due to both the desire to record additional information, and to correct some biasing bugs.
+
+Note: this document is markdown with embedded LaTeX; different markdown renderers may not produce the expected output.  Viewing with `pandoc -s PROFILING_INTERNALS.md -o PROFILING_INTERNALS.pdf` is recommended.
+
+## Some tricks in our implementation toolbag
+
+### Sampling
+Recording our metadata is quite expensive; we need to walk up the stack to get a stack trace. On top of that, we need to allocate storage to record that stack trace, and stick it somewhere where a profile-dumping call can find it. That call might happen on another thread, so we'll probably need to take a lock to do so. These costs are quite large compared to the average cost of an allocation. To manage this, we'll only sample some fraction of allocations. This will miss some of them, so our data will be incomplete, but we'll try to make up for it. We can tune our sampling rate to balance accuracy and performance.
+
+### Fast Bernoulli sampling
+Compared to our fast paths, even a `coinflip(p)` function can be quite expensive. Having to do a random-number generation and some floating point operations would be a sizeable relative cost. However (as pointed out in [[Vitter, 1987](https://dl.acm.org/doi/10.1145/23002.23003)]), if we can orchestrate our algorithm so that many of our `coinflip` calls share their parameter value, we can do better. We can sample from the geometric distribution, and initialize a counter with the result. When the counter hits 0, the `coinflip` function returns true (and reinitializes its internal counter).
+This can let us do a random-number generation once per (logical) coinflip that comes up heads, rather than once per (logical) coinflip. Since we expect to sample relatively rarely, this can be a large win.
+
+### Fast-path / slow-path thinking
+Most programs have a skewed distribution of allocations. Smaller allocations are much more frequent than large ones, but shorter lived and less common as a fraction of program memory. "Small" and "large" are necessarily sort of fuzzy terms, but if we define "small" as "allocations jemalloc puts into slabs" and "large" as the others, then it's not uncommon for small allocations to be hundreds of times more frequent than large ones, but take up around half the amount of heap space as large ones. Moreover, small allocations tend to be much cheaper than large ones (often by a factor of 20-30): they're more likely to hit in thread caches, less likely to have to do an mmap, and cheaper to fill (by the user) once the allocation has been returned.
+
+## An unbiased estimator of space consumption from (almost) arbitrary sampling strategies
+Suppose we have a sampling strategy that meets the following criteria:
+
+  - One allocation being sampled is independent of other allocations being sampled.
+  - Each allocation has a non-zero probability of being sampled.
+
+We can then estimate the bytes in live allocations through some particular stack trace as:
+
+$$ \sum_i S_i I_i \frac{1}{\mathrm{E}[I_i]} $$
+
+where the sum ranges over some index variable of live allocations from that stack, $S_i$ is the size of the $i$'th allocation, and $I_i$ is an indicator random variable for whether or not the $i'th$ allocation is sampled. $S_i$ and $\mathrm{E}[I_i]$ are constants (the program allocations are fixed; the random variables are the sampling decisions), so taking the expectation we get
+
+$$ \sum_i S_i \mathrm{E}[I_i] \frac{1}{\mathrm{E}[I_i]}.$$
+
+This is of course $\sum_i S_i$, as we want (and, a similar calculation could be done for allocation counts as well).
+This is a fairly general strategy; note that while we require that sampling decisions be independent of one another's outcomes, they don't have to be independent of previous allocations, total bytes allocated, etc. You can imagine strategies that:
+
+  - Sample allocations at program startup at a higher rate than subsequent allocations
+  - Sample even-indexed allocations more frequently than odd-indexed ones (so long as no allocation has zero sampling probability)
+  - Let threads declare themselves as high-sampling-priority, and sample their allocations at an increased rate.
+
+These can all be fit into this framework to give an unbiased estimator.
+
+## Evaluating sampling strategies
+Not all strategies for picking allocations to sample are equally good, of course. Among unbiased estimators, the lower the variance, the lower the mean squared error. Using the estimator above, the variance is:
+
+$$
+\begin{aligned}
+& \mathrm{Var}[\sum_i S_i I_i \frac{1}{\mathrm{E}[I_i]}]  \\
+=& \sum_i \mathrm{Var}[S_i I_i \frac{1}{\mathrm{E}[I_i]}] \\
+=& \sum_i \frac{S_i^2}{\mathrm{E}[I_i]^2} \mathrm{Var}[I_i] \\
+=& \sum_i \frac{S_i^2}{\mathrm{E}[I_i]^2} \mathrm{Var}[I_i] \\
+=& \sum_i \frac{S_i^2}{\mathrm{E}[I_i]^2} \mathrm{E}[I_i](1 - \mathrm{E}[I_i]) \\
+=& \sum_i S_i^2 \frac{1 - \mathrm{E}[I_i]}{\mathrm{E}[I_i]}.
+\end{aligned}
+$$
+
+We can use this formula to compare various strategy choices. All else being equal, lower-variance strategies are better.
+
+## Possible sampling strategies
+Because of the desire to avoid the fast-path costs, we'd like to use our Bernoulli trick if possible. There are two obvious counters to use: a coinflip per allocation, and a coinflip per byte allocated.
+
+### Bernoulli sampling per-allocation
+An obvious strategy is to pick some large $N$, and give each allocation a $1/N$ chance of being sampled. This would let us use our Bernoulli-via-Geometric trick. Using the formula from above, we can compute the variance as:
+
+$$ \sum_i S_i^2 \frac{1 - \frac{1}{N}}{\frac{1}{N}}  = (N-1) \sum_i S_i^2.$$
+
+That is, an allocation of size $Z$ contributes a term of $(N-1)Z^2$ to the variance.
+
+### Bernoulli sampling per-byte
+Another option we have is to pick some rate $R$, and give each byte a $1/R$ chance of being picked for sampling (at which point we would sample its contained allocation). The chance of an allocation of size $Z$ being sampled, then, is
+
+$$1-(1-\frac{1}{R})^{Z}$$
+
+and an allocation of size $Z$ contributes a term of
+
+$$Z^2 \frac{(1-\frac{1}{R})^{Z}}{1-(1-\frac{1}{R})^{Z}}.$$
+
+In practical settings, $R$ is large, and so this is well-approximated by
+
+$$Z^2 \frac{e^{-Z/R}}{1 - e^{-Z/R}} .$$
+
+Just to get a sense of the dynamics here, let's look at the behavior for various values of $Z$. When $Z$ is small relative to $R$, we can use $e^z \approx 1 + x$, and conclude that the variance contributed by a small-$Z$ allocation is around
+
+$$Z^2 \frac{1-Z/R}{Z/R} \approx RZ.$$
+
+When $Z$ is comparable to $R$, the variance term is near $Z^2$ (we have $\frac{e^{-Z/R}}{1 - e^{-Z/R}} = 1$ when $Z/R = \ln 2 \approx 0.693$). When $Z$ is large relative to $R$, the variance term goes to zero.
+
+## Picking a sampling strategy
+The fast-path/slow-path dynamics of allocation patterns point us towards the per-byte sampling approach:
+
+  - The quadratic increase in variance per allocation in the first approach is quite costly when heaps have a non-negligible portion of their bytes in those allocations, which is practically often the case.
+  - The Bernoulli-per-byte approach shifts more of its samples towards large allocations, which are already a slow-path.
+  - We drive several tickers (e.g. tcache gc) by bytes allocated, and report bytes-allocated as a user-visible statistic, so we have to do all the necessary bookkeeping anyways.
+
+Indeed, this is the approach we use in jemalloc. Our heap dumps record the size of the allocation and the sampling rate $R$, and jeprof unbiases by dividing by $1 - e^{-Z/R}$.  The framework above would suggest dividing by $1-(1-1/R)^Z$; instead, we use the fact that $R$ is large in practical situations, and so $e^{-Z/R}$ is a good approximation (and faster to compute).  (Equivalently, we may also see this as the factor that falls out from viewing sampling as a Poisson process directly).
+
+## Consequences for heap dump consumers
+Using this approach means that there are a few things users need to be aware of.
+
+### Stack counts are not proportional to allocation frequencies
+If one stack appears twice as often as another, this by itself does not imply that it allocates twice as often. Consider the case in which there are only two types of allocating call stacks in a program. Stack A allocates 8 bytes, and occurs a million times in a program. Stack B allocates 8 MB, and occurs just once in a program. If our sampling rate $R$ is about 1MB, we expect stack A to show up about 8 times, and stack B to show up once. Stack A isn't 8 times more frequent than stack B, though; it's a million times more frequent.
+
+### Aggregation must be done after unbiasing samples
+Some tools manually parse heap dump output, and aggregate across stacks (or across program runs) to provide wider-scale data analyses. When doing this aggregation, though, it's important to unbias-and-then-sum, rather than sum-and-then-unbias. Reusing our example from the previous section: suppose we collect heap dumps of the program from a million machines. We then have 8 million occurs of stack A (each of 8 bytes), and a million occurrences of stack B (each of 8 MB). If we sum first, we'll attribute 64 MB to stack A, and 8 TB to stack B. Unbiasing changes these numbers by an infinitesimal amount, so that sum-then-unbias dramatically underreports the amount of memory allocated by stack A.
+
+## An avenue for future exploration
+While the framework we laid out above is pretty general, as an engineering decision we're only interested in fairly simple approaches (i.e. ones for which the chance of an allocation being sampled depends only on its size). Our job is then: for each size class $Z$, pick a probability $p_Z$ that an allocation of that size will be sampled. We made some handwave-y references to statistical distributions to justify our choices, but there's no reason we need to pick them that way. Any set of non-zero probabilities is a valid choice.
+The real limiting factor in our ability to reduce estimator variance is that fact that sampling is expensive; we want to make sure we only do it on a small fraction of allocations. Our goal, then, is to pick the $p_Z$ to minimize variance given some maximum sampling rate $P$. If we define $a_Z$ to be the fraction of allocations of size $Z$, and $l_Z$ to be the fraction of allocations of size $Z$ still alive at the time of a heap dump, then we can phrase this as an optimization problem over the choices of $p_Z$:
+
+Minimize
+
+$$ \sum_Z Z^2 l_Z \frac{1-p_Z}{p_Z} $$
+
+subject to
+
+$$ \sum_Z a_Z p_Z \leq P $$
+
+Ignoring a term that doesn't depend on $p_Z$, the objective is minimized whenever
+
+$$ \sum_Z Z^2 l_Z \frac{1}{p_Z} $$
+
+is. For a particular program, $l_Z$ and $a_Z$ are just numbers that can be obtained (exactly) from existing stats introspection facilities, and we have a fairly tractable convex optimization problem (it can be framed as a second-order cone program). It would be interesting to evaluate, for various common allocation patterns, how well our current strategy adapts. Do our actual choices for $p_Z$ closely correspond to the optimal ones? How close is the variance of our choices to the variance of the optimal strategy?
+You can imagine an implementation that actually goes all the way, and makes $p_Z$ selections a tuning parameter. I don't think this is a good use of development time for the foreseeable future; but I do wonder about the answers to some of these questions.
+
+## Implementation realities
+
+The nice story above is at least partially a lie. Initially, jeprof (copying its logic from pprof)  had the sum-then-unbias error described above.  The current version of jemalloc does the unbiasing step on a per-allocation basis internally, so that we're always tracking what the unbiased numbers "should" be.  The problem is, actually surfacing those unbiased numbers would require a breaking change to jeprof (and the various already-deployed tools that have copied its logic). Instead, we use a little bit more trickery. Since we know at dump time the numbers we want jeprof to report, we simply choose the values we'll output so that the jeprof numbers will match the true numbers.  The math is described in `src/prof_data.c` (where the only cleverness is a change of variables that lets the exponentials fall out).
+
+This has the effect of making the output of jeprof (and related tools) correct, while making its inputs incorrect.  This can be annoying to human readers of raw profiling dump output.
diff --git a/deps/jemalloc/doc_internal/jemalloc.svg b/deps/jemalloc/doc_internal/jemalloc.svg
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diff --git a/deps/jemalloc/include/jemalloc/internal/activity_callback.h b/deps/jemalloc/include/jemalloc/internal/activity_callback.h
new file mode 100644
index 0000000..6c2e84e
--- /dev/null
+++ b/deps/jemalloc/include/jemalloc/internal/activity_callback.h
@@ -0,0 +1,23 @@
+#ifndef JEMALLOC_INTERNAL_ACTIVITY_CALLBACK_H
+#define JEMALLOC_INTERNAL_ACTIVITY_CALLBACK_H
+
+/*
+ * The callback to be executed "periodically", in response to some amount of
+ * allocator activity.
+ *
+ * This callback need not be computing any sort of peak (although that's the
+ * intended first use case), but we drive it from the peak counter, so it's
+ * keeps things tidy to keep it here.
+ *
+ * The calls to this thunk get driven by the peak_event module.
+ */
+#define ACTIVITY_CALLBACK_THUNK_INITIALIZER {NULL, NULL}
+typedef void (*activity_callback_t)(void *uctx, uint64_t allocated,
+    uint64_t deallocated);
+typedef struct activity_callback_thunk_s activity_callback_thunk_t;
+struct activity_callback_thunk_s {
+	activity_callback_t callback;
+	void *uctx;
+};
+
+#endif /* JEMALLOC_INTERNAL_ACTIVITY_CALLBACK_H */
diff --git a/deps/jemalloc/include/jemalloc/internal/arena_externs.h b/deps/jemalloc/include/jemalloc/internal/arena_externs.h
new file mode 100644
index 0000000..e6fceaa
--- /dev/null
+++ b/deps/jemalloc/include/jemalloc/internal/arena_externs.h
@@ -0,0 +1,121 @@
+#ifndef JEMALLOC_INTERNAL_ARENA_EXTERNS_H
+#define JEMALLOC_INTERNAL_ARENA_EXTERNS_H
+
+#include "jemalloc/internal/bin.h"
+#include "jemalloc/internal/div.h"
+#include "jemalloc/internal/extent_dss.h"
+#include "jemalloc/internal/hook.h"
+#include "jemalloc/internal/pages.h"
+#include "jemalloc/internal/stats.h"
+
+/*
+ * When the amount of pages to be purged exceeds this amount, deferred purge
+ * should happen.
+ */
+#define ARENA_DEFERRED_PURGE_NPAGES_THRESHOLD UINT64_C(1024)
+
+extern ssize_t opt_dirty_decay_ms;
+extern ssize_t opt_muzzy_decay_ms;
+
+extern percpu_arena_mode_t opt_percpu_arena;
+extern const char *percpu_arena_mode_names[];
+
+extern div_info_t arena_binind_div_info[SC_NBINS];
+
+extern malloc_mutex_t arenas_lock;
+extern emap_t arena_emap_global;
+
+extern size_t opt_oversize_threshold;
+extern size_t oversize_threshold;
+
+/*
+ * arena_bin_offsets[binind] is the offset of the first bin shard for size class
+ * binind.
+ */
+extern uint32_t arena_bin_offsets[SC_NBINS];
+
+void arena_basic_stats_merge(tsdn_t *tsdn, arena_t *arena,
+    unsigned *nthreads, const char **dss, ssize_t *dirty_decay_ms,
+    ssize_t *muzzy_decay_ms, size_t *nactive, size_t *ndirty, size_t *nmuzzy);
+void arena_stats_merge(tsdn_t *tsdn, arena_t *arena, unsigned *nthreads,
+    const char **dss, ssize_t *dirty_decay_ms, ssize_t *muzzy_decay_ms,
+    size_t *nactive, size_t *ndirty, size_t *nmuzzy, arena_stats_t *astats,
+    bin_stats_data_t *bstats, arena_stats_large_t *lstats,
+    pac_estats_t *estats, hpa_shard_stats_t *hpastats, sec_stats_t *secstats);
+void arena_handle_deferred_work(tsdn_t *tsdn, arena_t *arena);
+edata_t *arena_extent_alloc_large(tsdn_t *tsdn, arena_t *arena,
+    size_t usize, size_t alignment, bool zero);
+void arena_extent_dalloc_large_prep(tsdn_t *tsdn, arena_t *arena,
+    edata_t *edata);
+void arena_extent_ralloc_large_shrink(tsdn_t *tsdn, arena_t *arena,
+    edata_t *edata, size_t oldsize);
+void arena_extent_ralloc_large_expand(tsdn_t *tsdn, arena_t *arena,
+    edata_t *edata, size_t oldsize);
+bool arena_decay_ms_set(tsdn_t *tsdn, arena_t *arena, extent_state_t state,
+    ssize_t decay_ms);
+ssize_t arena_decay_ms_get(arena_t *arena, extent_state_t state);
+void arena_decay(tsdn_t *tsdn, arena_t *arena, bool is_background_thread,
+    bool all);
+uint64_t arena_time_until_deferred(tsdn_t *tsdn, arena_t *arena);
+void arena_do_deferred_work(tsdn_t *tsdn, arena_t *arena);
+void arena_reset(tsd_t *tsd, arena_t *arena);
+void arena_destroy(tsd_t *tsd, arena_t *arena);
+void arena_cache_bin_fill_small(tsdn_t *tsdn, arena_t *arena,
+    cache_bin_t *cache_bin, cache_bin_info_t *cache_bin_info, szind_t binind,
+    const unsigned nfill);
+
+void *arena_malloc_hard(tsdn_t *tsdn, arena_t *arena, size_t size,
+    szind_t ind, bool zero);
+void *arena_palloc(tsdn_t *tsdn, arena_t *arena, size_t usize,
+    size_t alignment, bool zero, tcache_t *tcache);
+void arena_prof_promote(tsdn_t *tsdn, void *ptr, size_t usize);
+void arena_dalloc_promoted(tsdn_t *tsdn, void *ptr, tcache_t *tcache,
+    bool slow_path);
+void arena_slab_dalloc(tsdn_t *tsdn, arena_t *arena, edata_t *slab);
+
+void arena_dalloc_bin_locked_handle_newly_empty(tsdn_t *tsdn, arena_t *arena,
+    edata_t *slab, bin_t *bin);
+void arena_dalloc_bin_locked_handle_newly_nonempty(tsdn_t *tsdn, arena_t *arena,
+    edata_t *slab, bin_t *bin);
+void arena_dalloc_small(tsdn_t *tsdn, void *ptr);
+bool arena_ralloc_no_move(tsdn_t *tsdn, void *ptr, size_t oldsize, size_t size,
+    size_t extra, bool zero, size_t *newsize);
+void *arena_ralloc(tsdn_t *tsdn, arena_t *arena, void *ptr, size_t oldsize,
+    size_t size, size_t alignment, bool zero, tcache_t *tcache,
+    hook_ralloc_args_t *hook_args);
+dss_prec_t arena_dss_prec_get(arena_t *arena);
+ehooks_t *arena_get_ehooks(arena_t *arena);
+extent_hooks_t *arena_set_extent_hooks(tsd_t *tsd, arena_t *arena,
+    extent_hooks_t *extent_hooks);
+bool arena_dss_prec_set(arena_t *arena, dss_prec_t dss_prec);
+ssize_t arena_dirty_decay_ms_default_get(void);
+bool arena_dirty_decay_ms_default_set(ssize_t decay_ms);
+ssize_t arena_muzzy_decay_ms_default_get(void);
+bool arena_muzzy_decay_ms_default_set(ssize_t decay_ms);
+bool arena_retain_grow_limit_get_set(tsd_t *tsd, arena_t *arena,
+    size_t *old_limit, size_t *new_limit);
+unsigned arena_nthreads_get(arena_t *arena, bool internal);
+void arena_nthreads_inc(arena_t *arena, bool internal);
+void arena_nthreads_dec(arena_t *arena, bool internal);
+arena_t *arena_new(tsdn_t *tsdn, unsigned ind, const arena_config_t *config);
+bool arena_init_huge(void);
+bool arena_is_huge(unsigned arena_ind);
+arena_t *arena_choose_huge(tsd_t *tsd);
+bin_t *arena_bin_choose(tsdn_t *tsdn, arena_t *arena, szind_t binind,
+    unsigned *binshard);
+size_t arena_fill_small_fresh(tsdn_t *tsdn, arena_t *arena, szind_t binind,
+    void **ptrs, size_t nfill, bool zero);
+bool arena_boot(sc_data_t *sc_data, base_t *base, bool hpa);
+void arena_prefork0(tsdn_t *tsdn, arena_t *arena);
+void arena_prefork1(tsdn_t *tsdn, arena_t *arena);
+void arena_prefork2(tsdn_t *tsdn, arena_t *arena);
+void arena_prefork3(tsdn_t *tsdn, arena_t *arena);
+void arena_prefork4(tsdn_t *tsdn, arena_t *arena);
+void arena_prefork5(tsdn_t *tsdn, arena_t *arena);
+void arena_prefork6(tsdn_t *tsdn, arena_t *arena);
+void arena_prefork7(tsdn_t *tsdn, arena_t *arena);
+void arena_prefork8(tsdn_t *tsdn, arena_t *arena);
+void arena_postfork_parent(tsdn_t *tsdn, arena_t *arena);
+void arena_postfork_child(tsdn_t *tsdn, arena_t *arena);
+
+#endif /* JEMALLOC_INTERNAL_ARENA_EXTERNS_H */
diff --git a/deps/jemalloc/include/jemalloc/internal/arena_inlines_a.h b/deps/jemalloc/include/jemalloc/internal/arena_inlines_a.h
new file mode 100644
index 0000000..8568358
--- /dev/null
+++ b/deps/jemalloc/include/jemalloc/internal/arena_inlines_a.h
@@ -0,0 +1,24 @@
+#ifndef JEMALLOC_INTERNAL_ARENA_INLINES_A_H
+#define JEMALLOC_INTERNAL_ARENA_INLINES_A_H
+
+static inline unsigned
+arena_ind_get(const arena_t *arena) {
+	return arena->ind;
+}
+
+static inline void
+arena_internal_add(arena_t *arena, size_t size) {
+	atomic_fetch_add_zu(&arena->stats.internal, size, ATOMIC_RELAXED);
+}
+
+static inline void
+arena_internal_sub(arena_t *arena, size_t size) {
+	atomic_fetch_sub_zu(&arena->stats.internal, size, ATOMIC_RELAXED);
+}
+
+static inline size_t
+arena_internal_get(arena_t *arena) {
+	return atomic_load_zu(&arena->stats.internal, ATOMIC_RELAXED);
+}
+
+#endif /* JEMALLOC_INTERNAL_ARENA_INLINES_A_H */
diff --git a/deps/jemalloc/include/jemalloc/internal/arena_inlines_b.h b/deps/jemalloc/include/jemalloc/internal/arena_inlines_b.h
new file mode 100644
index 0000000..fa81537
--- /dev/null
+++ b/deps/jemalloc/include/jemalloc/internal/arena_inlines_b.h
@@ -0,0 +1,550 @@
+#ifndef JEMALLOC_INTERNAL_ARENA_INLINES_B_H
+#define JEMALLOC_INTERNAL_ARENA_INLINES_B_H
+
+#include "jemalloc/internal/div.h"
+#include "jemalloc/internal/emap.h"
+#include "jemalloc/internal/jemalloc_internal_types.h"
+#include "jemalloc/internal/mutex.h"
+#include "jemalloc/internal/rtree.h"
+#include "jemalloc/internal/safety_check.h"
+#include "jemalloc/internal/sc.h"
+#include "jemalloc/internal/sz.h"
+#include "jemalloc/internal/ticker.h"
+
+static inline arena_t *
+arena_get_from_edata(edata_t *edata) {
+	return (arena_t *)atomic_load_p(&arenas[edata_arena_ind_get(edata)],
+	    ATOMIC_RELAXED);
+}
+
+JEMALLOC_ALWAYS_INLINE arena_t *
+arena_choose_maybe_huge(tsd_t *tsd, arena_t *arena, size_t size) {
+	if (arena != NULL) {
+		return arena;
+	}
+
+	/*
+	 * For huge allocations, use the dedicated huge arena if both are true:
+	 * 1) is using auto arena selection (i.e. arena == NULL), and 2) the
+	 * thread is not assigned to a manual arena.
+	 */
+	if (unlikely(size >= oversize_threshold)) {
+		arena_t *tsd_arena = tsd_arena_get(tsd);
+		if (tsd_arena == NULL || arena_is_auto(tsd_arena)) {
+			return arena_choose_huge(tsd);
+		}
+	}
+
+	return arena_choose(tsd, NULL);
+}
+
+JEMALLOC_ALWAYS_INLINE void
+arena_prof_info_get(tsd_t *tsd, const void *ptr, emap_alloc_ctx_t *alloc_ctx,
+    prof_info_t *prof_info, bool reset_recent) {
+	cassert(config_prof);
+	assert(ptr != NULL);
+	assert(prof_info != NULL);
+
+	edata_t *edata = NULL;
+	bool is_slab;
+
+	/* Static check. */
+	if (alloc_ctx == NULL) {
+		edata = emap_edata_lookup(tsd_tsdn(tsd), &arena_emap_global,
+		    ptr);
+		is_slab = edata_slab_get(edata);
+	} else if (unlikely(!(is_slab = alloc_ctx->slab))) {
+		edata = emap_edata_lookup(tsd_tsdn(tsd), &arena_emap_global,
+		    ptr);
+	}
+
+	if (unlikely(!is_slab)) {
+		/* edata must have been initialized at this point. */
+		assert(edata != NULL);
+		large_prof_info_get(tsd, edata, prof_info, reset_recent);
+	} else {
+		prof_info->alloc_tctx = (prof_tctx_t *)(uintptr_t)1U;
+		/*
+		 * No need to set other fields in prof_info; they will never be
+		 * accessed if (uintptr_t)alloc_tctx == (uintptr_t)1U.
+		 */
+	}
+}
+
+JEMALLOC_ALWAYS_INLINE void
+arena_prof_tctx_reset(tsd_t *tsd, const void *ptr,
+    emap_alloc_ctx_t *alloc_ctx) {
+	cassert(config_prof);
+	assert(ptr != NULL);
+
+	/* Static check. */
+	if (alloc_ctx == NULL) {
+		edata_t *edata = emap_edata_lookup(tsd_tsdn(tsd),
+		    &arena_emap_global, ptr);
+		if (unlikely(!edata_slab_get(edata))) {
+			large_prof_tctx_reset(edata);
+		}
+	} else {
+		if (unlikely(!alloc_ctx->slab)) {
+			edata_t *edata = emap_edata_lookup(tsd_tsdn(tsd),
+			    &arena_emap_global, ptr);
+			large_prof_tctx_reset(edata);
+		}
+	}
+}
+
+JEMALLOC_ALWAYS_INLINE void
+arena_prof_tctx_reset_sampled(tsd_t *tsd, const void *ptr) {
+	cassert(config_prof);
+	assert(ptr != NULL);
+
+	edata_t *edata = emap_edata_lookup(tsd_tsdn(tsd), &arena_emap_global,
+	    ptr);
+	assert(!edata_slab_get(edata));
+
+	large_prof_tctx_reset(edata);
+}
+
+JEMALLOC_ALWAYS_INLINE void
+arena_prof_info_set(tsd_t *tsd, edata_t *edata, prof_tctx_t *tctx,
+    size_t size) {
+	cassert(config_prof);
+
+	assert(!edata_slab_get(edata));
+	large_prof_info_set(edata, tctx, size);
+}
+
+JEMALLOC_ALWAYS_INLINE void
+arena_decay_ticks(tsdn_t *tsdn, arena_t *arena, unsigned nticks) {
+	if (unlikely(tsdn_null(tsdn))) {
+		return;
+	}
+	tsd_t *tsd = tsdn_tsd(tsdn);
+	/*
+	 * We use the ticker_geom_t to avoid having per-arena state in the tsd.
+	 * Instead of having a countdown-until-decay timer running for every
+	 * arena in every thread, we flip a coin once per tick, whose
+	 * probability of coming up heads is 1/nticks; this is effectively the
+	 * operation of the ticker_geom_t.  Each arena has the same chance of a
+	 * coinflip coming up heads (1/ARENA_DECAY_NTICKS_PER_UPDATE), so we can
+	 * use a single ticker for all of them.
+	 */
+	ticker_geom_t *decay_ticker = tsd_arena_decay_tickerp_get(tsd);
+	uint64_t *prng_state = tsd_prng_statep_get(tsd);
+	if (unlikely(ticker_geom_ticks(decay_ticker, prng_state, nticks))) {
+		arena_decay(tsdn, arena, false, false);
+	}
+}
+
+JEMALLOC_ALWAYS_INLINE void
+arena_decay_tick(tsdn_t *tsdn, arena_t *arena) {
+	arena_decay_ticks(tsdn, arena, 1);
+}
+
+JEMALLOC_ALWAYS_INLINE void *
+arena_malloc(tsdn_t *tsdn, arena_t *arena, size_t size, szind_t ind, bool zero,
+    tcache_t *tcache, bool slow_path) {
+	assert(!tsdn_null(tsdn) || tcache == NULL);
+
+	if (likely(tcache != NULL)) {
+		if (likely(size <= SC_SMALL_MAXCLASS)) {
+			return tcache_alloc_small(tsdn_tsd(tsdn), arena,
+			    tcache, size, ind, zero, slow_path);
+		}
+		if (likely(size <= tcache_maxclass)) {
+			return tcache_alloc_large(tsdn_tsd(tsdn), arena,
+			    tcache, size, ind, zero, slow_path);
+		}
+		/* (size > tcache_maxclass) case falls through. */
+		assert(size > tcache_maxclass);
+	}
+
+	return arena_malloc_hard(tsdn, arena, size, ind, zero);
+}
+
+JEMALLOC_ALWAYS_INLINE arena_t *
+arena_aalloc(tsdn_t *tsdn, const void *ptr) {
+	edata_t *edata = emap_edata_lookup(tsdn, &arena_emap_global, ptr);
+	unsigned arena_ind = edata_arena_ind_get(edata);
+	return (arena_t *)atomic_load_p(&arenas[arena_ind], ATOMIC_RELAXED);
+}
+
+JEMALLOC_ALWAYS_INLINE size_t
+arena_salloc(tsdn_t *tsdn, const void *ptr) {
+	assert(ptr != NULL);
+	emap_alloc_ctx_t alloc_ctx;
+	emap_alloc_ctx_lookup(tsdn, &arena_emap_global, ptr, &alloc_ctx);
+	assert(alloc_ctx.szind != SC_NSIZES);
+
+	return sz_index2size(alloc_ctx.szind);
+}
+
+JEMALLOC_ALWAYS_INLINE size_t
+arena_vsalloc(tsdn_t *tsdn, const void *ptr) {
+	/*
+	 * Return 0 if ptr is not within an extent managed by jemalloc.  This
+	 * function has two extra costs relative to isalloc():
+	 * - The rtree calls cannot claim to be dependent lookups, which induces
+	 *   rtree lookup load dependencies.
+	 * - The lookup may fail, so there is an extra branch to check for
+	 *   failure.
+	 */
+
+	emap_full_alloc_ctx_t full_alloc_ctx;
+	bool missing = emap_full_alloc_ctx_try_lookup(tsdn, &arena_emap_global,
+	    ptr, &full_alloc_ctx);
+	if (missing) {
+		return 0;
+	}
+
+	if (full_alloc_ctx.edata == NULL) {
+		return 0;
+	}
+	assert(edata_state_get(full_alloc_ctx.edata) == extent_state_active);
+	/* Only slab members should be looked up via interior pointers. */
+	assert(edata_addr_get(full_alloc_ctx.edata) == ptr
+	    || edata_slab_get(full_alloc_ctx.edata));
+
+	assert(full_alloc_ctx.szind != SC_NSIZES);
+
+	return sz_index2size(full_alloc_ctx.szind);
+}
+
+JEMALLOC_ALWAYS_INLINE bool
+large_dalloc_safety_checks(edata_t *edata, void *ptr, szind_t szind) {
+	if (!config_opt_safety_checks) {
+		return false;
+	}
+
+	/*
+	 * Eagerly detect double free and sized dealloc bugs for large sizes.
+	 * The cost is low enough (as edata will be accessed anyway) to be
+	 * enabled all the time.
+	 */
+	if (unlikely(edata == NULL ||
+	    edata_state_get(edata) != extent_state_active)) {
+		safety_check_fail("Invalid deallocation detected: "
+		    "pages being freed (%p) not currently active, "
+		    "possibly caused by double free bugs.",
+		    (uintptr_t)edata_addr_get(edata));
+		return true;
+	}
+	size_t input_size = sz_index2size(szind);
+	if (unlikely(input_size != edata_usize_get(edata))) {
+		safety_check_fail_sized_dealloc(/* current_dealloc */ true, ptr,
+		    /* true_size */ edata_usize_get(edata), input_size);
+		return true;
+	}
+
+	return false;
+}
+
+static inline void
+arena_dalloc_large_no_tcache(tsdn_t *tsdn, void *ptr, szind_t szind) {
+	if (config_prof && unlikely(szind < SC_NBINS)) {
+		arena_dalloc_promoted(tsdn, ptr, NULL, true);
+	} else {
+		edata_t *edata = emap_edata_lookup(tsdn, &arena_emap_global,
+		    ptr);
+		if (large_dalloc_safety_checks(edata, ptr, szind)) {
+			/* See the comment in isfree. */
+			return;
+		}
+		large_dalloc(tsdn, edata);
+	}
+}
+
+static inline void
+arena_dalloc_no_tcache(tsdn_t *tsdn, void *ptr) {
+	assert(ptr != NULL);
+
+	emap_alloc_ctx_t alloc_ctx;
+	emap_alloc_ctx_lookup(tsdn, &arena_emap_global, ptr, &alloc_ctx);
+
+	if (config_debug) {
+		edata_t *edata = emap_edata_lookup(tsdn, &arena_emap_global,
+		    ptr);
+		assert(alloc_ctx.szind == edata_szind_get(edata));
+		assert(alloc_ctx.szind < SC_NSIZES);
+		assert(alloc_ctx.slab == edata_slab_get(edata));
+	}
+
+	if (likely(alloc_ctx.slab)) {
+		/* Small allocation. */
+		arena_dalloc_small(tsdn, ptr);
+	} else {
+		arena_dalloc_large_no_tcache(tsdn, ptr, alloc_ctx.szind);
+	}
+}
+
+JEMALLOC_ALWAYS_INLINE void
+arena_dalloc_large(tsdn_t *tsdn, void *ptr, tcache_t *tcache, szind_t szind,
+    bool slow_path) {
+	if (szind < nhbins) {
+		if (config_prof && unlikely(szind < SC_NBINS)) {
+			arena_dalloc_promoted(tsdn, ptr, tcache, slow_path);
+		} else {
+			tcache_dalloc_large(tsdn_tsd(tsdn), tcache, ptr, szind,
+			    slow_path);
+		}
+	} else {
+		edata_t *edata = emap_edata_lookup(tsdn, &arena_emap_global,
+		    ptr);
+		if (large_dalloc_safety_checks(edata, ptr, szind)) {
+			/* See the comment in isfree. */
+			return;
+		}
+		large_dalloc(tsdn, edata);
+	}
+}
+
+JEMALLOC_ALWAYS_INLINE void
+arena_dalloc(tsdn_t *tsdn, void *ptr, tcache_t *tcache,
+    emap_alloc_ctx_t *caller_alloc_ctx, bool slow_path) {
+	assert(!tsdn_null(tsdn) || tcache == NULL);
+	assert(ptr != NULL);
+
+	if (unlikely(tcache == NULL)) {
+		arena_dalloc_no_tcache(tsdn, ptr);
+		return;
+	}
+
+	emap_alloc_ctx_t alloc_ctx;
+	if (caller_alloc_ctx != NULL) {
+		alloc_ctx = *caller_alloc_ctx;
+	} else {
+		util_assume(!tsdn_null(tsdn));
+		emap_alloc_ctx_lookup(tsdn, &arena_emap_global, ptr,
+		    &alloc_ctx);
+	}
+
+	if (config_debug) {
+		edata_t *edata = emap_edata_lookup(tsdn, &arena_emap_global,
+		    ptr);
+		assert(alloc_ctx.szind == edata_szind_get(edata));
+		assert(alloc_ctx.szind < SC_NSIZES);
+		assert(alloc_ctx.slab == edata_slab_get(edata));
+	}
+
+	if (likely(alloc_ctx.slab)) {
+		/* Small allocation. */
+		tcache_dalloc_small(tsdn_tsd(tsdn), tcache, ptr,
+		    alloc_ctx.szind, slow_path);
+	} else {
+		arena_dalloc_large(tsdn, ptr, tcache, alloc_ctx.szind,
+		    slow_path);
+	}
+}
+
+static inline void
+arena_sdalloc_no_tcache(tsdn_t *tsdn, void *ptr, size_t size) {
+	assert(ptr != NULL);
+	assert(size <= SC_LARGE_MAXCLASS);
+
+	emap_alloc_ctx_t alloc_ctx;
+	if (!config_prof || !opt_prof) {
+		/*
+		 * There is no risk of being confused by a promoted sampled
+		 * object, so base szind and slab on the given size.
+		 */
+		alloc_ctx.szind = sz_size2index(size);
+		alloc_ctx.slab = (alloc_ctx.szind < SC_NBINS);
+	}
+
+	if ((config_prof && opt_prof) || config_debug) {
+		emap_alloc_ctx_lookup(tsdn, &arena_emap_global, ptr,
+		    &alloc_ctx);
+
+		assert(alloc_ctx.szind == sz_size2index(size));
+		assert((config_prof && opt_prof)
+		    || alloc_ctx.slab == (alloc_ctx.szind < SC_NBINS));
+
+		if (config_debug) {
+			edata_t *edata = emap_edata_lookup(tsdn,
+			    &arena_emap_global, ptr);
+			assert(alloc_ctx.szind == edata_szind_get(edata));
+			assert(alloc_ctx.slab == edata_slab_get(edata));
+		}
+	}
+
+	if (likely(alloc_ctx.slab)) {
+		/* Small allocation. */
+		arena_dalloc_small(tsdn, ptr);
+	} else {
+		arena_dalloc_large_no_tcache(tsdn, ptr, alloc_ctx.szind);
+	}
+}
+
+JEMALLOC_ALWAYS_INLINE void
+arena_sdalloc(tsdn_t *tsdn, void *ptr, size_t size, tcache_t *tcache,
+    emap_alloc_ctx_t *caller_alloc_ctx, bool slow_path) {
+	assert(!tsdn_null(tsdn) || tcache == NULL);
+	assert(ptr != NULL);
+	assert(size <= SC_LARGE_MAXCLASS);
+
+	if (unlikely(tcache == NULL)) {
+		arena_sdalloc_no_tcache(tsdn, ptr, size);
+		return;
+	}
+
+	emap_alloc_ctx_t alloc_ctx;
+	if (config_prof && opt_prof) {
+		if (caller_alloc_ctx == NULL) {
+			/* Uncommon case and should be a static check. */
+			emap_alloc_ctx_lookup(tsdn, &arena_emap_global, ptr,
+			    &alloc_ctx);
+			assert(alloc_ctx.szind == sz_size2index(size));
+		} else {
+			alloc_ctx = *caller_alloc_ctx;
+		}
+	} else {
+		/*
+		 * There is no risk of being confused by a promoted sampled
+		 * object, so base szind and slab on the given size.
+		 */
+		alloc_ctx.szind = sz_size2index(size);
+		alloc_ctx.slab = (alloc_ctx.szind < SC_NBINS);
+	}
+
+	if (config_debug) {
+		edata_t *edata = emap_edata_lookup(tsdn, &arena_emap_global,
+		    ptr);
+		assert(alloc_ctx.szind == edata_szind_get(edata));
+		assert(alloc_ctx.slab == edata_slab_get(edata));
+	}
+
+	if (likely(alloc_ctx.slab)) {
+		/* Small allocation. */
+		tcache_dalloc_small(tsdn_tsd(tsdn), tcache, ptr,
+		    alloc_ctx.szind, slow_path);
+	} else {
+		arena_dalloc_large(tsdn, ptr, tcache, alloc_ctx.szind,
+		    slow_path);
+	}
+}
+
+static inline void
+arena_cache_oblivious_randomize(tsdn_t *tsdn, arena_t *arena, edata_t *edata,
+    size_t alignment) {
+	assert(edata_base_get(edata) == edata_addr_get(edata));
+
+	if (alignment < PAGE) {
+		unsigned lg_range = LG_PAGE -
+		    lg_floor(CACHELINE_CEILING(alignment));
+		size_t r;
+		if (!tsdn_null(tsdn)) {
+			tsd_t *tsd = tsdn_tsd(tsdn);
+			r = (size_t)prng_lg_range_u64(
+			    tsd_prng_statep_get(tsd), lg_range);
+		} else {
+			uint64_t stack_value = (uint64_t)(uintptr_t)&r;
+			r = (size_t)prng_lg_range_u64(&stack_value, lg_range);
+		}
+		uintptr_t random_offset = ((uintptr_t)r) << (LG_PAGE -
+		    lg_range);
+		edata->e_addr = (void *)((uintptr_t)edata->e_addr +
+		    random_offset);
+		assert(ALIGNMENT_ADDR2BASE(edata->e_addr, alignment) ==
+		    edata->e_addr);
+	}
+}
+
+/*
+ * The dalloc bin info contains just the information that the common paths need
+ * during tcache flushes.  By force-inlining these paths, and using local copies
+ * of data (so that the compiler knows it's constant), we avoid a whole bunch of
+ * redundant loads and stores by leaving this information in registers.
+ */
+typedef struct arena_dalloc_bin_locked_info_s arena_dalloc_bin_locked_info_t;
+struct arena_dalloc_bin_locked_info_s {
+	div_info_t div_info;
+	uint32_t nregs;
+	uint64_t ndalloc;
+};
+
+JEMALLOC_ALWAYS_INLINE size_t
+arena_slab_regind(arena_dalloc_bin_locked_info_t *info, szind_t binind,
+    edata_t *slab, const void *ptr) {
+	size_t diff, regind;
+
+	/* Freeing a pointer outside the slab can cause assertion failure. */
+	assert((uintptr_t)ptr >= (uintptr_t)edata_addr_get(slab));
+	assert((uintptr_t)ptr < (uintptr_t)edata_past_get(slab));
+	/* Freeing an interior pointer can cause assertion failure. */
+	assert(((uintptr_t)ptr - (uintptr_t)edata_addr_get(slab)) %
+	    (uintptr_t)bin_infos[binind].reg_size == 0);
+
+	diff = (size_t)((uintptr_t)ptr - (uintptr_t)edata_addr_get(slab));
+
+	/* Avoid doing division with a variable divisor. */
+	regind = div_compute(&info->div_info, diff);
+
+	assert(regind < bin_infos[binind].nregs);
+
+	return regind;
+}
+
+JEMALLOC_ALWAYS_INLINE void
+arena_dalloc_bin_locked_begin(arena_dalloc_bin_locked_info_t *info,
+    szind_t binind) {
+	info->div_info = arena_binind_div_info[binind];
+	info->nregs = bin_infos[binind].nregs;
+	info->ndalloc = 0;
+}
+
+/*
+ * Does the deallocation work associated with freeing a single pointer (a
+ * "step") in between a arena_dalloc_bin_locked begin and end call.
+ *
+ * Returns true if arena_slab_dalloc must be called on slab.  Doesn't do
+ * stats updates, which happen during finish (this lets running counts get left
+ * in a register).
+ */
+JEMALLOC_ALWAYS_INLINE bool
+arena_dalloc_bin_locked_step(tsdn_t *tsdn, arena_t *arena, bin_t *bin,
+    arena_dalloc_bin_locked_info_t *info, szind_t binind, edata_t *slab,
+    void *ptr) {
+	const bin_info_t *bin_info = &bin_infos[binind];
+	size_t regind = arena_slab_regind(info, binind, slab, ptr);
+	slab_data_t *slab_data = edata_slab_data_get(slab);
+
+	assert(edata_nfree_get(slab) < bin_info->nregs);
+	/* Freeing an unallocated pointer can cause assertion failure. */
+	assert(bitmap_get(slab_data->bitmap, &bin_info->bitmap_info, regind));
+
+	bitmap_unset(slab_data->bitmap, &bin_info->bitmap_info, regind);
+	edata_nfree_inc(slab);
+
+	if (config_stats) {
+		info->ndalloc++;
+	}
+
+	unsigned nfree = edata_nfree_get(slab);
+	if (nfree == bin_info->nregs) {
+		arena_dalloc_bin_locked_handle_newly_empty(tsdn, arena, slab,
+		    bin);
+		return true;
+	} else if (nfree == 1 && slab != bin->slabcur) {
+		arena_dalloc_bin_locked_handle_newly_nonempty(tsdn, arena, slab,
+		    bin);
+	}
+	return false;
+}
+
+JEMALLOC_ALWAYS_INLINE void
+arena_dalloc_bin_locked_finish(tsdn_t *tsdn, arena_t *arena, bin_t *bin,
+    arena_dalloc_bin_locked_info_t *info) {
+	if (config_stats) {
+		bin->stats.ndalloc += info->ndalloc;
+		assert(bin->stats.curregs >= (size_t)info->ndalloc);
+		bin->stats.curregs -= (size_t)info->ndalloc;
+	}
+}
+
+static inline bin_t *
+arena_get_bin(arena_t *arena, szind_t binind, unsigned binshard) {
+	bin_t *shard0 = (bin_t *)((uintptr_t)arena + arena_bin_offsets[binind]);
+	return shard0 + binshard;
+}
+
+#endif /* JEMALLOC_INTERNAL_ARENA_INLINES_B_H */
diff --git a/deps/jemalloc/include/jemalloc/internal/arena_stats.h b/deps/jemalloc/include/jemalloc/internal/arena_stats.h
new file mode 100644
index 0000000..15f1d34
--- /dev/null
+++ b/deps/jemalloc/include/jemalloc/internal/arena_stats.h
@@ -0,0 +1,114 @@
+#ifndef JEMALLOC_INTERNAL_ARENA_STATS_H
+#define JEMALLOC_INTERNAL_ARENA_STATS_H
+
+#include "jemalloc/internal/atomic.h"
+#include "jemalloc/internal/lockedint.h"
+#include "jemalloc/internal/mutex.h"
+#include "jemalloc/internal/mutex_prof.h"
+#include "jemalloc/internal/pa.h"
+#include "jemalloc/internal/sc.h"
+
+JEMALLOC_DIAGNOSTIC_DISABLE_SPURIOUS
+
+typedef struct arena_stats_large_s arena_stats_large_t;
+struct arena_stats_large_s {
+	/*
+	 * Total number of allocation/deallocation requests served directly by
+	 * the arena.
+	 */
+	locked_u64_t	nmalloc;
+	locked_u64_t	ndalloc;
+
+	/*
+	 * Number of allocation requests that correspond to this size class.
+	 * This includes requests served by tcache, though tcache only
+	 * periodically merges into this counter.
+	 */
+	locked_u64_t	nrequests; /* Partially derived. */
+	/*
+	 * Number of tcache fills / flushes for large (similarly, periodically
+	 * merged).  Note that there is no large tcache batch-fill currently
+	 * (i.e. only fill 1 at a time); however flush may be batched.
+	 */
+	locked_u64_t	nfills; /* Partially derived. */
+	locked_u64_t	nflushes; /* Partially derived. */
+
+	/* Current number of allocations of this size class. */
+	size_t		curlextents; /* Derived. */
+};
+
+/*
+ * Arena stats.  Note that fields marked "derived" are not directly maintained
+ * within the arena code; rather their values are derived during stats merge
+ * requests.
+ */
+typedef struct arena_stats_s arena_stats_t;
+struct arena_stats_s {
+	LOCKEDINT_MTX_DECLARE(mtx)
+
+	/*
+	 * resident includes the base stats -- that's why it lives here and not
+	 * in pa_shard_stats_t.
+	 */
+	size_t			base; /* Derived. */
+	size_t			resident; /* Derived. */
+	size_t			metadata_thp; /* Derived. */
+	size_t			mapped; /* Derived. */
+
+	atomic_zu_t		internal;
+
+	size_t			allocated_large; /* Derived. */
+	uint64_t		nmalloc_large; /* Derived. */
+	uint64_t		ndalloc_large; /* Derived. */
+	uint64_t		nfills_large; /* Derived. */
+	uint64_t		nflushes_large; /* Derived. */
+	uint64_t		nrequests_large; /* Derived. */
+
+	/*
+	 * The stats logically owned by the pa_shard in the same arena.  This
+	 * lives here only because it's convenient for the purposes of the ctl
+	 * module -- it only knows about the single arena_stats.
+	 */
+	pa_shard_stats_t	pa_shard_stats;
+
+	/* Number of bytes cached in tcache associated with this arena. */
+	size_t			tcache_bytes; /* Derived. */
+	size_t			tcache_stashed_bytes; /* Derived. */
+
+	mutex_prof_data_t mutex_prof_data[mutex_prof_num_arena_mutexes];
+
+	/* One element for each large size class. */
+	arena_stats_large_t	lstats[SC_NSIZES - SC_NBINS];
+
+	/* Arena uptime. */
+	nstime_t		uptime;
+};
+
+static inline bool
+arena_stats_init(tsdn_t *tsdn, arena_stats_t *arena_stats) {
+	if (config_debug) {
+		for (size_t i = 0; i < sizeof(arena_stats_t); i++) {
+			assert(((char *)arena_stats)[i] == 0);
+		}
+	}
+	if (LOCKEDINT_MTX_INIT(arena_stats->mtx, "arena_stats",
+	    WITNESS_RANK_ARENA_STATS, malloc_mutex_rank_exclusive)) {
+		return true;
+	}
+	/* Memory is zeroed, so there is no need to clear stats. */
+	return false;
+}
+
+static inline void
+arena_stats_large_flush_nrequests_add(tsdn_t *tsdn, arena_stats_t *arena_stats,
+    szind_t szind, uint64_t nrequests) {
+	LOCKEDINT_MTX_LOCK(tsdn, arena_stats->mtx);
+	arena_stats_large_t *lstats = &arena_stats->lstats[szind - SC_NBINS];
+	locked_inc_u64(tsdn, LOCKEDINT_MTX(arena_stats->mtx),
+	    &lstats->nrequests, nrequests);
+	locked_inc_u64(tsdn, LOCKEDINT_MTX(arena_stats->mtx),
+	    &lstats->nflushes, 1);
+	LOCKEDINT_MTX_UNLOCK(tsdn, arena_stats->mtx);
+}
+
+#endif /* JEMALLOC_INTERNAL_ARENA_STATS_H */
diff --git a/deps/jemalloc/include/jemalloc/internal/arena_structs.h b/deps/jemalloc/include/jemalloc/internal/arena_structs.h
new file mode 100644
index 0000000..e2a5a40
--- /dev/null
+++ b/deps/jemalloc/include/jemalloc/internal/arena_structs.h
@@ -0,0 +1,101 @@
+#ifndef JEMALLOC_INTERNAL_ARENA_STRUCTS_H
+#define JEMALLOC_INTERNAL_ARENA_STRUCTS_H
+
+#include "jemalloc/internal/arena_stats.h"
+#include "jemalloc/internal/atomic.h"
+#include "jemalloc/internal/bin.h"
+#include "jemalloc/internal/bitmap.h"
+#include "jemalloc/internal/counter.h"
+#include "jemalloc/internal/ecache.h"
+#include "jemalloc/internal/edata_cache.h"
+#include "jemalloc/internal/extent_dss.h"
+#include "jemalloc/internal/jemalloc_internal_types.h"
+#include "jemalloc/internal/mutex.h"
+#include "jemalloc/internal/nstime.h"
+#include "jemalloc/internal/pa.h"
+#include "jemalloc/internal/ql.h"
+#include "jemalloc/internal/sc.h"
+#include "jemalloc/internal/ticker.h"
+
+struct arena_s {
+	/*
+	 * Number of threads currently assigned to this arena.  Each thread has
+	 * two distinct assignments, one for application-serving allocation, and
+	 * the other for internal metadata allocation.  Internal metadata must
+	 * not be allocated from arenas explicitly created via the arenas.create
+	 * mallctl, because the arena.<i>.reset mallctl indiscriminately
+	 * discards all allocations for the affected arena.
+	 *
+	 *   0: Application allocation.
+	 *   1: Internal metadata allocation.
+	 *
+	 * Synchronization: atomic.
+	 */
+	atomic_u_t		nthreads[2];
+
+	/* Next bin shard for binding new threads. Synchronization: atomic. */
+	atomic_u_t		binshard_next;
+
+	/*
+	 * When percpu_arena is enabled, to amortize the cost of reading /
+	 * updating the current CPU id, track the most recent thread accessing
+	 * this arena, and only read CPU if there is a mismatch.
+	 */
+	tsdn_t		*last_thd;
+
+	/* Synchronization: internal. */
+	arena_stats_t		stats;
+
+	/*
+	 * Lists of tcaches and cache_bin_array_descriptors for extant threads
+	 * associated with this arena.  Stats from these are merged
+	 * incrementally, and at exit if opt_stats_print is enabled.
+	 *
+	 * Synchronization: tcache_ql_mtx.
+	 */
+	ql_head(tcache_slow_t)			tcache_ql;
+	ql_head(cache_bin_array_descriptor_t)	cache_bin_array_descriptor_ql;
+	malloc_mutex_t				tcache_ql_mtx;
+
+	/*
+	 * Represents a dss_prec_t, but atomically.
+	 *
+	 * Synchronization: atomic.
+	 */
+	atomic_u_t		dss_prec;
+
+	/*
+	 * Extant large allocations.
+	 *
+	 * Synchronization: large_mtx.
+	 */
+	edata_list_active_t	large;
+	/* Synchronizes all large allocation/update/deallocation. */
+	malloc_mutex_t		large_mtx;
+
+	/* The page-level allocator shard this arena uses. */
+	pa_shard_t		pa_shard;
+
+	/*
+	 * A cached copy of base->ind.  This can get accessed on hot paths;
+	 * looking it up in base requires an extra pointer hop / cache miss.
+	 */
+	unsigned ind;
+
+	/*
+	 * Base allocator, from which arena metadata are allocated.
+	 *
+	 * Synchronization: internal.
+	 */
+	base_t			*base;
+	/* Used to determine uptime.  Read-only after initialization. */
+	nstime_t		create_time;
+
+	/*
+	 * The arena is allocated alongside its bins; really this is a
+	 * dynamically sized array determined by the binshard settings.
+	 */
+	bin_t			bins[0];
+};
+
+#endif /* JEMALLOC_INTERNAL_ARENA_STRUCTS_H */
diff --git a/deps/jemalloc/include/jemalloc/internal/arena_types.h b/deps/jemalloc/include/jemalloc/internal/arena_types.h
new file mode 100644
index 0000000..d0e1291
--- /dev/null
+++ b/deps/jemalloc/include/jemalloc/internal/arena_types.h
@@ -0,0 +1,58 @@
+#ifndef JEMALLOC_INTERNAL_ARENA_TYPES_H
+#define JEMALLOC_INTERNAL_ARENA_TYPES_H
+
+#include "jemalloc/internal/sc.h"
+
+/* Default decay times in milliseconds. */
+#define DIRTY_DECAY_MS_DEFAULT	ZD(10 * 1000)
+#define MUZZY_DECAY_MS_DEFAULT	(0)
+/* Number of event ticks between time checks. */
+#define ARENA_DECAY_NTICKS_PER_UPDATE	1000
+
+typedef struct arena_decay_s arena_decay_t;
+typedef struct arena_s arena_t;
+
+typedef enum {
+	percpu_arena_mode_names_base   = 0, /* Used for options processing. */
+
+	/*
+	 * *_uninit are used only during bootstrapping, and must correspond
+	 * to initialized variant plus percpu_arena_mode_enabled_base.
+	 */
+	percpu_arena_uninit            = 0,
+	per_phycpu_arena_uninit        = 1,
+
+	/* All non-disabled modes must come after percpu_arena_disabled. */
+	percpu_arena_disabled          = 2,
+
+	percpu_arena_mode_names_limit  = 3, /* Used for options processing. */
+	percpu_arena_mode_enabled_base = 3,
+
+	percpu_arena                   = 3,
+	per_phycpu_arena               = 4  /* Hyper threads share arena. */
+} percpu_arena_mode_t;
+
+#define PERCPU_ARENA_ENABLED(m)	((m) >= percpu_arena_mode_enabled_base)
+#define PERCPU_ARENA_DEFAULT	percpu_arena_disabled
+
+/*
+ * When allocation_size >= oversize_threshold, use the dedicated huge arena
+ * (unless have explicitly spicified arena index).  0 disables the feature.
+ */
+#define OVERSIZE_THRESHOLD_DEFAULT (8 << 20)
+
+struct arena_config_s {
+	/* extent hooks to be used for the arena */
+	extent_hooks_t *extent_hooks;
+
+	/*
+	 * Use extent hooks for metadata (base) allocations when true.
+	 */
+	bool metadata_use_hooks;
+};
+
+typedef struct arena_config_s arena_config_t;
+
+extern const arena_config_t arena_config_default;
+
+#endif /* JEMALLOC_INTERNAL_ARENA_TYPES_H */
diff --git a/deps/jemalloc/include/jemalloc/internal/assert.h b/deps/jemalloc/include/jemalloc/internal/assert.h
new file mode 100644
index 0000000..be4d45b
--- /dev/null
+++ b/deps/jemalloc/include/jemalloc/internal/assert.h
@@ -0,0 +1,56 @@
+#include "jemalloc/internal/malloc_io.h"
+#include "jemalloc/internal/util.h"
+
+/*
+ * Define a custom assert() in order to reduce the chances of deadlock during
+ * assertion failure.
+ */
+#ifndef assert
+#define assert(e) do {							\
+	if (unlikely(config_debug && !(e))) {				\
+		malloc_printf(						\
+		    "<jemalloc>: %s:%d: Failed assertion: \"%s\"\n",	\
+		    __FILE__, __LINE__, #e);				\
+		abort();						\
+	}								\
+} while (0)
+#endif
+
+#ifndef not_reached
+#define not_reached() do {						\
+	if (config_debug) {						\
+		malloc_printf(						\
+		    "<jemalloc>: %s:%d: Unreachable code reached\n",	\
+		    __FILE__, __LINE__);				\
+		abort();						\
+	}								\
+	unreachable();							\
+} while (0)
+#endif
+
+#ifndef not_implemented
+#define not_implemented() do {						\
+	if (config_debug) {						\
+		malloc_printf("<jemalloc>: %s:%d: Not implemented\n",	\
+		    __FILE__, __LINE__);				\
+		abort();						\
+	}								\
+} while (0)
+#endif
+
+#ifndef assert_not_implemented
+#define assert_not_implemented(e) do {					\
+	if (unlikely(config_debug && !(e))) {				\
+		not_implemented();					\
+	}								\
+} while (0)
+#endif
+
+/* Use to assert a particular configuration, e.g., cassert(config_debug). */
+#ifndef cassert
+#define cassert(c) do {							\
+	if (unlikely(!(c))) {						\
+		not_reached();						\
+	}								\
+} while (0)
+#endif
diff --git a/deps/jemalloc/include/jemalloc/internal/atomic.h b/deps/jemalloc/include/jemalloc/internal/atomic.h
new file mode 100644
index 0000000..c0f7312
--- /dev/null
+++ b/deps/jemalloc/include/jemalloc/internal/atomic.h
@@ -0,0 +1,107 @@
+#ifndef JEMALLOC_INTERNAL_ATOMIC_H
+#define JEMALLOC_INTERNAL_ATOMIC_H
+
+#define ATOMIC_INLINE JEMALLOC_ALWAYS_INLINE
+
+#define JEMALLOC_U8_ATOMICS
+#if defined(JEMALLOC_GCC_ATOMIC_ATOMICS)
+#  include "jemalloc/internal/atomic_gcc_atomic.h"
+#  if !defined(JEMALLOC_GCC_U8_ATOMIC_ATOMICS)
+#    undef JEMALLOC_U8_ATOMICS
+#  endif
+#elif defined(JEMALLOC_GCC_SYNC_ATOMICS)
+#  include "jemalloc/internal/atomic_gcc_sync.h"
+#  if !defined(JEMALLOC_GCC_U8_SYNC_ATOMICS)
+#    undef JEMALLOC_U8_ATOMICS
+#  endif
+#elif defined(_MSC_VER)
+#  include "jemalloc/internal/atomic_msvc.h"
+#elif defined(JEMALLOC_C11_ATOMICS)
+#  include "jemalloc/internal/atomic_c11.h"
+#else
+#  error "Don't have atomics implemented on this platform."
+#endif
+
+/*
+ * This header gives more or less a backport of C11 atomics. The user can write
+ * JEMALLOC_GENERATE_ATOMICS(type, short_type, lg_sizeof_type); to generate
+ * counterparts of the C11 atomic functions for type, as so:
+ *   JEMALLOC_GENERATE_ATOMICS(int *, pi, 3);
+ * and then write things like:
+ *   int *some_ptr;
+ *   atomic_pi_t atomic_ptr_to_int;
+ *   atomic_store_pi(&atomic_ptr_to_int, some_ptr, ATOMIC_RELAXED);
+ *   int *prev_value = atomic_exchange_pi(&ptr_to_int, NULL, ATOMIC_ACQ_REL);
+ *   assert(some_ptr == prev_value);
+ * and expect things to work in the obvious way.
+ *
+ * Also included (with naming differences to avoid conflicts with the standard
+ * library):
+ *   atomic_fence(atomic_memory_order_t) (mimics C11's atomic_thread_fence).
+ *   ATOMIC_INIT (mimics C11's ATOMIC_VAR_INIT).
+ */
+
+/*
+ * Pure convenience, so that we don't have to type "atomic_memory_order_"
+ * quite so often.
+ */
+#define ATOMIC_RELAXED atomic_memory_order_relaxed
+#define ATOMIC_ACQUIRE atomic_memory_order_acquire
+#define ATOMIC_RELEASE atomic_memory_order_release
+#define ATOMIC_ACQ_REL atomic_memory_order_acq_rel
+#define ATOMIC_SEQ_CST atomic_memory_order_seq_cst
+
+/*
+ * Another convenience -- simple atomic helper functions.
+ */
+#define JEMALLOC_GENERATE_EXPANDED_INT_ATOMICS(type, short_type,	\
+    lg_size)								\
+    JEMALLOC_GENERATE_INT_ATOMICS(type, short_type, lg_size)		\
+    ATOMIC_INLINE void							\
+    atomic_load_add_store_##short_type(atomic_##short_type##_t *a,	\
+	type inc) {							\
+	    type oldval = atomic_load_##short_type(a, ATOMIC_RELAXED);	\
+	    type newval = oldval + inc;					\
+	    atomic_store_##short_type(a, newval, ATOMIC_RELAXED);	\
+	}								\
+    ATOMIC_INLINE void							\
+    atomic_load_sub_store_##short_type(atomic_##short_type##_t *a,	\
+	type inc) {							\
+	    type oldval = atomic_load_##short_type(a, ATOMIC_RELAXED);	\
+	    type newval = oldval - inc;					\
+	    atomic_store_##short_type(a, newval, ATOMIC_RELAXED);	\
+	}
+
+/*
+ * Not all platforms have 64-bit atomics.  If we do, this #define exposes that
+ * fact.
+ */
+#if (LG_SIZEOF_PTR == 3 || LG_SIZEOF_INT == 3)
+#  define JEMALLOC_ATOMIC_U64
+#endif
+
+JEMALLOC_GENERATE_ATOMICS(void *, p, LG_SIZEOF_PTR)
+
+/*
+ * There's no actual guarantee that sizeof(bool) == 1, but it's true on the only
+ * platform that actually needs to know the size, MSVC.
+ */
+JEMALLOC_GENERATE_ATOMICS(bool, b, 0)
+
+JEMALLOC_GENERATE_EXPANDED_INT_ATOMICS(unsigned, u, LG_SIZEOF_INT)
+
+JEMALLOC_GENERATE_EXPANDED_INT_ATOMICS(size_t, zu, LG_SIZEOF_PTR)
+
+JEMALLOC_GENERATE_EXPANDED_INT_ATOMICS(ssize_t, zd, LG_SIZEOF_PTR)
+
+JEMALLOC_GENERATE_EXPANDED_INT_ATOMICS(uint8_t, u8, 0)
+
+JEMALLOC_GENERATE_EXPANDED_INT_ATOMICS(uint32_t, u32, 2)
+
+#ifdef JEMALLOC_ATOMIC_U64
+JEMALLOC_GENERATE_EXPANDED_INT_ATOMICS(uint64_t, u64, 3)
+#endif
+
+#undef ATOMIC_INLINE
+
+#endif /* JEMALLOC_INTERNAL_ATOMIC_H */
diff --git a/deps/jemalloc/include/jemalloc/internal/atomic_c11.h b/deps/jemalloc/include/jemalloc/internal/atomic_c11.h
new file mode 100644
index 0000000..a5f9313
--- /dev/null
+++ b/deps/jemalloc/include/jemalloc/internal/atomic_c11.h
@@ -0,0 +1,97 @@
+#ifndef JEMALLOC_INTERNAL_ATOMIC_C11_H
+#define JEMALLOC_INTERNAL_ATOMIC_C11_H
+
+#include <stdatomic.h>
+
+#define ATOMIC_INIT(...) ATOMIC_VAR_INIT(__VA_ARGS__)
+
+#define atomic_memory_order_t memory_order
+#define atomic_memory_order_relaxed memory_order_relaxed
+#define atomic_memory_order_acquire memory_order_acquire
+#define atomic_memory_order_release memory_order_release
+#define atomic_memory_order_acq_rel memory_order_acq_rel
+#define atomic_memory_order_seq_cst memory_order_seq_cst
+
+#define atomic_fence atomic_thread_fence
+
+#define JEMALLOC_GENERATE_ATOMICS(type, short_type,			\
+    /* unused */ lg_size)						\
+typedef _Atomic(type) atomic_##short_type##_t;				\
+									\
+ATOMIC_INLINE type							\
+atomic_load_##short_type(const atomic_##short_type##_t *a,		\
+    atomic_memory_order_t mo) {						\
+	/*								\
+	 * A strict interpretation of the C standard prevents		\
+	 * atomic_load from taking a const argument, but it's		\
+	 * convenient for our purposes. This cast is a workaround.	\
+	 */								\
+	atomic_##short_type##_t* a_nonconst =				\
+	    (atomic_##short_type##_t*)a;				\
+	return atomic_load_explicit(a_nonconst, mo);			\
+}									\
+									\
+ATOMIC_INLINE void							\
+atomic_store_##short_type(atomic_##short_type##_t *a,			\
+    type val, atomic_memory_order_t mo) {				\
+	atomic_store_explicit(a, val, mo);				\
+}									\
+									\
+ATOMIC_INLINE type							\
+atomic_exchange_##short_type(atomic_##short_type##_t *a, type val,	\
+    atomic_memory_order_t mo) {						\
+	return atomic_exchange_explicit(a, val, mo);			\
+}									\
+									\
+ATOMIC_INLINE bool							\
+atomic_compare_exchange_weak_##short_type(atomic_##short_type##_t *a,	\
+    type *expected, type desired, atomic_memory_order_t success_mo,	\
+    atomic_memory_order_t failure_mo) {					\
+	return atomic_compare_exchange_weak_explicit(a, expected,	\
+	    desired, success_mo, failure_mo);				\
+}									\
+									\
+ATOMIC_INLINE bool							\
+atomic_compare_exchange_strong_##short_type(atomic_##short_type##_t *a,	\
+    type *expected, type desired, atomic_memory_order_t success_mo,	\
+    atomic_memory_order_t failure_mo) {					\
+	return atomic_compare_exchange_strong_explicit(a, expected,	\
+	    desired, success_mo, failure_mo);				\
+}
+
+/*
+ * Integral types have some special operations available that non-integral ones
+ * lack.
+ */
+#define JEMALLOC_GENERATE_INT_ATOMICS(type, short_type, 		\
+    /* unused */ lg_size)						\
+JEMALLOC_GENERATE_ATOMICS(type, short_type, /* unused */ lg_size)	\
+									\
+ATOMIC_INLINE type							\
+atomic_fetch_add_##short_type(atomic_##short_type##_t *a,		\
+    type val, atomic_memory_order_t mo) {				\
+	return atomic_fetch_add_explicit(a, val, mo);			\
+}									\
+									\
+ATOMIC_INLINE type							\
+atomic_fetch_sub_##short_type(atomic_##short_type##_t *a,		\
+    type val, atomic_memory_order_t mo) {				\
+	return atomic_fetch_sub_explicit(a, val, mo);			\
+}									\
+ATOMIC_INLINE type							\
+atomic_fetch_and_##short_type(atomic_##short_type##_t *a,		\
+    type val, atomic_memory_order_t mo) {				\
+	return atomic_fetch_and_explicit(a, val, mo);			\
+}									\
+ATOMIC_INLINE type							\
+atomic_fetch_or_##short_type(atomic_##short_type##_t *a,		\
+    type val, atomic_memory_order_t mo) {				\
+	return atomic_fetch_or_explicit(a, val, mo);			\
+}									\
+ATOMIC_INLINE type							\
+atomic_fetch_xor_##short_type(atomic_##short_type##_t *a,		\
+    type val, atomic_memory_order_t mo) {				\
+	return atomic_fetch_xor_explicit(a, val, mo);			\
+}
+
+#endif /* JEMALLOC_INTERNAL_ATOMIC_C11_H */
diff --git a/deps/jemalloc/include/jemalloc/internal/atomic_gcc_atomic.h b/deps/jemalloc/include/jemalloc/internal/atomic_gcc_atomic.h
new file mode 100644
index 0000000..471515e
--- /dev/null
+++ b/deps/jemalloc/include/jemalloc/internal/atomic_gcc_atomic.h
@@ -0,0 +1,129 @@
+#ifndef JEMALLOC_INTERNAL_ATOMIC_GCC_ATOMIC_H
+#define JEMALLOC_INTERNAL_ATOMIC_GCC_ATOMIC_H
+
+#include "jemalloc/internal/assert.h"
+
+#define ATOMIC_INIT(...) {__VA_ARGS__}
+
+typedef enum {
+	atomic_memory_order_relaxed,
+	atomic_memory_order_acquire,
+	atomic_memory_order_release,
+	atomic_memory_order_acq_rel,
+	atomic_memory_order_seq_cst
+} atomic_memory_order_t;
+
+ATOMIC_INLINE int
+atomic_enum_to_builtin(atomic_memory_order_t mo) {
+	switch (mo) {
+	case atomic_memory_order_relaxed:
+		return __ATOMIC_RELAXED;
+	case atomic_memory_order_acquire:
+		return __ATOMIC_ACQUIRE;
+	case atomic_memory_order_release:
+		return __ATOMIC_RELEASE;
+	case atomic_memory_order_acq_rel:
+		return __ATOMIC_ACQ_REL;
+	case atomic_memory_order_seq_cst:
+		return __ATOMIC_SEQ_CST;
+	}
+	/* Can't happen; the switch is exhaustive. */
+	not_reached();
+}
+
+ATOMIC_INLINE void
+atomic_fence(atomic_memory_order_t mo) {
+	__atomic_thread_fence(atomic_enum_to_builtin(mo));
+}
+
+#define JEMALLOC_GENERATE_ATOMICS(type, short_type,			\
+    /* unused */ lg_size)						\
+typedef struct {							\
+	type repr;							\
+} atomic_##short_type##_t;						\
+									\
+ATOMIC_INLINE type							\
+atomic_load_##short_type(const atomic_##short_type##_t *a,		\
+    atomic_memory_order_t mo) {						\
+	type result;							\
+	__atomic_load(&a->repr, &result, atomic_enum_to_builtin(mo));	\
+	return result;							\
+}									\
+									\
+ATOMIC_INLINE void							\
+atomic_store_##short_type(atomic_##short_type##_t *a, type val,		\
+    atomic_memory_order_t mo) {						\
+	__atomic_store(&a->repr, &val, atomic_enum_to_builtin(mo));	\
+}									\
+									\
+ATOMIC_INLINE type							\
+atomic_exchange_##short_type(atomic_##short_type##_t *a, type val,	\
+    atomic_memory_order_t mo) {						\
+	type result;							\
+	__atomic_exchange(&a->repr, &val, &result,			\
+	    atomic_enum_to_builtin(mo));				\
+	return result;							\
+}									\
+									\
+ATOMIC_INLINE bool							\
+atomic_compare_exchange_weak_##short_type(atomic_##short_type##_t *a,	\
+    UNUSED type *expected, type desired,				\
+    atomic_memory_order_t success_mo,					\
+    atomic_memory_order_t failure_mo) {					\
+	return __atomic_compare_exchange(&a->repr, expected, &desired,	\
+	    true, atomic_enum_to_builtin(success_mo),			\
+	    atomic_enum_to_builtin(failure_mo));			\
+}									\
+									\
+ATOMIC_INLINE bool							\
+atomic_compare_exchange_strong_##short_type(atomic_##short_type##_t *a,	\
+    UNUSED type *expected, type desired,				\
+    atomic_memory_order_t success_mo,					\
+    atomic_memory_order_t failure_mo) {					\
+	return __atomic_compare_exchange(&a->repr, expected, &desired,	\
+	    false,							\
+	    atomic_enum_to_builtin(success_mo),				\
+	    atomic_enum_to_builtin(failure_mo));			\
+}
+
+
+#define JEMALLOC_GENERATE_INT_ATOMICS(type, short_type,			\
+    /* unused */ lg_size)						\
+JEMALLOC_GENERATE_ATOMICS(type, short_type, /* unused */ lg_size)	\
+									\
+ATOMIC_INLINE type							\
+atomic_fetch_add_##short_type(atomic_##short_type##_t *a, type val,	\
+    atomic_memory_order_t mo) {						\
+	return __atomic_fetch_add(&a->repr, val,			\
+	    atomic_enum_to_builtin(mo));				\
+}									\
+									\
+ATOMIC_INLINE type							\
+atomic_fetch_sub_##short_type(atomic_##short_type##_t *a, type val,	\
+    atomic_memory_order_t mo) {						\
+	return __atomic_fetch_sub(&a->repr, val,			\
+	    atomic_enum_to_builtin(mo));				\
+}									\
+									\
+ATOMIC_INLINE type							\
+atomic_fetch_and_##short_type(atomic_##short_type##_t *a, type val,	\
+    atomic_memory_order_t mo) {						\
+	return __atomic_fetch_and(&a->repr, val,			\
+	    atomic_enum_to_builtin(mo));				\
+}									\
+									\
+ATOMIC_INLINE type							\
+atomic_fetch_or_##short_type(atomic_##short_type##_t *a, type val,	\
+    atomic_memory_order_t mo) {						\
+	return __atomic_fetch_or(&a->repr, val,				\
+	    atomic_enum_to_builtin(mo));				\
+}									\
+									\
+ATOMIC_INLINE type							\
+atomic_fetch_xor_##short_type(atomic_##short_type##_t *a, type val,	\
+    atomic_memory_order_t mo) {						\
+	return __atomic_fetch_xor(&a->repr, val,			\
+	    atomic_enum_to_builtin(mo));				\
+}
+
+#endif /* JEMALLOC_INTERNAL_ATOMIC_GCC_ATOMIC_H */
diff --git a/deps/jemalloc/include/jemalloc/internal/atomic_gcc_sync.h b/deps/jemalloc/include/jemalloc/internal/atomic_gcc_sync.h
new file mode 100644
index 0000000..e02b7cb
--- /dev/null
+++ b/deps/jemalloc/include/jemalloc/internal/atomic_gcc_sync.h
@@ -0,0 +1,195 @@
+#ifndef JEMALLOC_INTERNAL_ATOMIC_GCC_SYNC_H
+#define JEMALLOC_INTERNAL_ATOMIC_GCC_SYNC_H
+
+#define ATOMIC_INIT(...) {__VA_ARGS__}
+
+typedef enum {
+	atomic_memory_order_relaxed,
+	atomic_memory_order_acquire,
+	atomic_memory_order_release,
+	atomic_memory_order_acq_rel,
+	atomic_memory_order_seq_cst
+} atomic_memory_order_t;
+
+ATOMIC_INLINE void
+atomic_fence(atomic_memory_order_t mo) {
+	/* Easy cases first: no barrier, and full barrier. */
+	if (mo == atomic_memory_order_relaxed) {
+		asm volatile("" ::: "memory");
+		return;
+	}
+	if (mo == atomic_memory_order_seq_cst) {
+		asm volatile("" ::: "memory");
+		__sync_synchronize();
+		asm volatile("" ::: "memory");
+		return;
+	}
+	asm volatile("" ::: "memory");
+#  if defined(__i386__) || defined(__x86_64__)
+	/* This is implicit on x86. */
+#  elif defined(__ppc64__)
+	asm volatile("lwsync");
+#  elif defined(__ppc__)
+	asm volatile("sync");
+#  elif defined(__sparc__) && defined(__arch64__)
+	if (mo == atomic_memory_order_acquire) {
+		asm volatile("membar #LoadLoad | #LoadStore");
+	} else if (mo == atomic_memory_order_release) {
+		asm volatile("membar #LoadStore | #StoreStore");
+	} else {
+		asm volatile("membar #LoadLoad | #LoadStore | #StoreStore");
+	}
+#  else
+	__sync_synchronize();
+#  endif
+	asm volatile("" ::: "memory");
+}
+
+/*
+ * A correct implementation of seq_cst loads and stores on weakly ordered
+ * architectures could do either of the following:
+ *   1. store() is weak-fence -> store -> strong fence, load() is load ->
+ *      strong-fence.
+ *   2. store() is strong-fence -> store, load() is strong-fence -> load ->
+ *      weak-fence.
+ * The tricky thing is, load() and store() above can be the load or store
+ * portions of a gcc __sync builtin, so we have to follow GCC's lead, which
+ * means going with strategy 2.
+ * On strongly ordered architectures, the natural strategy is to stick a strong
+ * fence after seq_cst stores, and have naked loads.  So we want the strong
+ * fences in different places on different architectures.
+ * atomic_pre_sc_load_fence and atomic_post_sc_store_fence allow us to
+ * accomplish this.
+ */
+
+ATOMIC_INLINE void
+atomic_pre_sc_load_fence() {
+#  if defined(__i386__) || defined(__x86_64__) ||			\
+    (defined(__sparc__) && defined(__arch64__))
+	atomic_fence(atomic_memory_order_relaxed);
+#  else
+	atomic_fence(atomic_memory_order_seq_cst);
+#  endif
+}
+
+ATOMIC_INLINE void
+atomic_post_sc_store_fence() {
+#  if defined(__i386__) || defined(__x86_64__) ||			\
+    (defined(__sparc__) && defined(__arch64__))
+	atomic_fence(atomic_memory_order_seq_cst);
+#  else
+	atomic_fence(atomic_memory_order_relaxed);
+#  endif
+
+}
+
+#define JEMALLOC_GENERATE_ATOMICS(type, short_type,			\
+    /* unused */ lg_size)						\
+typedef struct {							\
+	type volatile repr;						\
+} atomic_##short_type##_t;						\
+									\
+ATOMIC_INLINE type							\
+atomic_load_##short_type(const atomic_##short_type##_t *a,		\
+    atomic_memory_order_t mo) {						\
+	if (mo == atomic_memory_order_seq_cst) {			\
+		atomic_pre_sc_load_fence();				\
+	}								\
+	type result = a->repr;						\
+	if (mo != atomic_memory_order_relaxed) {			\
+		atomic_fence(atomic_memory_order_acquire);		\
+	}								\
+	return result;							\
+}									\
+									\
+ATOMIC_INLINE void							\
+atomic_store_##short_type(atomic_##short_type##_t *a,			\
+    type val, atomic_memory_order_t mo) {				\
+	if (mo != atomic_memory_order_relaxed) {			\
+		atomic_fence(atomic_memory_order_release);		\
+	}								\
+	a->repr = val;							\
+	if (mo == atomic_memory_order_seq_cst) {			\
+		atomic_post_sc_store_fence();				\
+	}								\
+}									\
+									\
+ATOMIC_INLINE type							\
+atomic_exchange_##short_type(atomic_##short_type##_t *a, type val, \
+    atomic_memory_order_t mo) {                  					 \
+	/*								\
+	 * Because of FreeBSD, we care about gcc 4.2, which doesn't have\
+	 * an atomic exchange builtin.  We fake it with a CAS loop.	\
+	 */								\
+	while (true) {							\
+		type old = a->repr;					\
+		if (__sync_bool_compare_and_swap(&a->repr, old, val)) {	\
+			return old;					\
+		}							\
+	}								\
+}									\
+									\
+ATOMIC_INLINE bool							\
+atomic_compare_exchange_weak_##short_type(atomic_##short_type##_t *a,	\
+    type *expected, type desired,                                     \
+    atomic_memory_order_t success_mo,                          \
+    atomic_memory_order_t failure_mo) {				                \
+	type prev = __sync_val_compare_and_swap(&a->repr, *expected,	\
+	    desired);							\
+	if (prev == *expected) {					\
+		return true;						\
+	} else {							\
+		*expected = prev;					\
+		return false;						\
+	}								\
+}									\
+ATOMIC_INLINE bool							\
+atomic_compare_exchange_strong_##short_type(atomic_##short_type##_t *a,	\
+    type *expected, type desired,                                       \
+    atomic_memory_order_t success_mo,                            \
+    atomic_memory_order_t failure_mo) {                          \
+	type prev = __sync_val_compare_and_swap(&a->repr, *expected,	\
+	    desired);							\
+	if (prev == *expected) {					\
+		return true;						\
+	} else {							\
+		*expected = prev;					\
+		return false;						\
+	}								\
+}
+
+#define JEMALLOC_GENERATE_INT_ATOMICS(type, short_type,			\
+    /* unused */ lg_size)						\
+JEMALLOC_GENERATE_ATOMICS(type, short_type, /* unused */ lg_size)	\
+									\
+ATOMIC_INLINE type							\
+atomic_fetch_add_##short_type(atomic_##short_type##_t *a, type val,	\
+    atomic_memory_order_t mo) {						\
+	return __sync_fetch_and_add(&a->repr, val);			\
+}									\
+									\
+ATOMIC_INLINE type							\
+atomic_fetch_sub_##short_type(atomic_##short_type##_t *a, type val,	\
+    atomic_memory_order_t mo) {						\
+	return __sync_fetch_and_sub(&a->repr, val);			\
+}									\
+									\
+ATOMIC_INLINE type							\
+atomic_fetch_and_##short_type(atomic_##short_type##_t *a, type val,	\
+    atomic_memory_order_t mo) {						\
+	return __sync_fetch_and_and(&a->repr, val);			\
+}									\
+									\
+ATOMIC_INLINE type							\
+atomic_fetch_or_##short_type(atomic_##short_type##_t *a, type val,	\
+    atomic_memory_order_t mo) {						\
+	return __sync_fetch_and_or(&a->repr, val);			\
+}									\
+									\
+ATOMIC_INLINE type							\
+atomic_fetch_xor_##short_type(atomic_##short_type##_t *a, type val,	\
+    atomic_memory_order_t mo) {						\
+	return __sync_fetch_and_xor(&a->repr, val);			\
+}
+
+#endif /* JEMALLOC_INTERNAL_ATOMIC_GCC_SYNC_H */
diff --git a/deps/jemalloc/include/jemalloc/internal/atomic_msvc.h b/deps/jemalloc/include/jemalloc/internal/atomic_msvc.h
new file mode 100644
index 0000000..67057ce
--- /dev/null
+++ b/deps/jemalloc/include/jemalloc/internal/atomic_msvc.h
@@ -0,0 +1,158 @@
+#ifndef JEMALLOC_INTERNAL_ATOMIC_MSVC_H
+#define JEMALLOC_INTERNAL_ATOMIC_MSVC_H
+
+#define ATOMIC_INIT(...) {__VA_ARGS__}
+
+typedef enum {
+	atomic_memory_order_relaxed,
+	atomic_memory_order_acquire,
+	atomic_memory_order_release,
+	atomic_memory_order_acq_rel,
+	atomic_memory_order_seq_cst
+} atomic_memory_order_t;
+
+typedef char atomic_repr_0_t;
+typedef short atomic_repr_1_t;
+typedef long atomic_repr_2_t;
+typedef __int64 atomic_repr_3_t;
+
+ATOMIC_INLINE void
+atomic_fence(atomic_memory_order_t mo) {
+	_ReadWriteBarrier();
+#  if defined(_M_ARM) || defined(_M_ARM64)
+	/* ARM needs a barrier for everything but relaxed. */
+	if (mo != atomic_memory_order_relaxed) {
+		MemoryBarrier();
+	}
+#  elif defined(_M_IX86) || defined (_M_X64)
+	/* x86 needs a barrier only for seq_cst. */
+	if (mo == atomic_memory_order_seq_cst) {
+		MemoryBarrier();
+	}
+#  else
+#  error "Don't know how to create atomics for this platform for MSVC."
+#  endif
+	_ReadWriteBarrier();
+}
+
+#define ATOMIC_INTERLOCKED_REPR(lg_size) atomic_repr_ ## lg_size ## _t
+
+#define ATOMIC_CONCAT(a, b) ATOMIC_RAW_CONCAT(a, b)
+#define ATOMIC_RAW_CONCAT(a, b) a ## b
+
+#define ATOMIC_INTERLOCKED_NAME(base_name, lg_size) ATOMIC_CONCAT(	\
+    base_name, ATOMIC_INTERLOCKED_SUFFIX(lg_size))
+
+#define ATOMIC_INTERLOCKED_SUFFIX(lg_size)				\
+    ATOMIC_CONCAT(ATOMIC_INTERLOCKED_SUFFIX_, lg_size)
+
+#define ATOMIC_INTERLOCKED_SUFFIX_0 8
+#define ATOMIC_INTERLOCKED_SUFFIX_1 16
+#define ATOMIC_INTERLOCKED_SUFFIX_2
+#define ATOMIC_INTERLOCKED_SUFFIX_3 64
+
+#define JEMALLOC_GENERATE_ATOMICS(type, short_type, lg_size)		\
+typedef struct {							\
+	ATOMIC_INTERLOCKED_REPR(lg_size) repr;				\
+} atomic_##short_type##_t;						\
+									\
+ATOMIC_INLINE type							\
+atomic_load_##short_type(const atomic_##short_type##_t *a,		\
+    atomic_memory_order_t mo) {						\
+	ATOMIC_INTERLOCKED_REPR(lg_size) ret = a->repr;			\
+	if (mo != atomic_memory_order_relaxed) {			\
+		atomic_fence(atomic_memory_order_acquire);		\
+	}								\
+	return (type) ret;						\
+}									\
+									\
+ATOMIC_INLINE void							\
+atomic_store_##short_type(atomic_##short_type##_t *a,			\
+    type val, atomic_memory_order_t mo) {				\
+	if (mo != atomic_memory_order_relaxed) {			\
+		atomic_fence(atomic_memory_order_release);		\
+	}								\
+	a->repr = (ATOMIC_INTERLOCKED_REPR(lg_size)) val;		\
+	if (mo == atomic_memory_order_seq_cst) {			\
+		atomic_fence(atomic_memory_order_seq_cst);		\
+	}								\
+}									\
+									\
+ATOMIC_INLINE type							\
+atomic_exchange_##short_type(atomic_##short_type##_t *a, type val,	\
+    atomic_memory_order_t mo) {						\
+	return (type)ATOMIC_INTERLOCKED_NAME(_InterlockedExchange,	\
+	    lg_size)(&a->repr, (ATOMIC_INTERLOCKED_REPR(lg_size))val);	\
+}									\
+									\
+ATOMIC_INLINE bool							\
+atomic_compare_exchange_weak_##short_type(atomic_##short_type##_t *a,	\
+    type *expected, type desired, atomic_memory_order_t success_mo,	\
+    atomic_memory_order_t failure_mo) {					\
+	ATOMIC_INTERLOCKED_REPR(lg_size) e =				\
+	    (ATOMIC_INTERLOCKED_REPR(lg_size))*expected;		\
+	ATOMIC_INTERLOCKED_REPR(lg_size) d =				\
+	    (ATOMIC_INTERLOCKED_REPR(lg_size))desired;			\
+	ATOMIC_INTERLOCKED_REPR(lg_size) old =				\
+	    ATOMIC_INTERLOCKED_NAME(_InterlockedCompareExchange, 	\
+		lg_size)(&a->repr, d, e);				\
+	if (old == e) {							\
+		return true;						\
+	} else {							\
+		*expected = (type)old;					\
+		return false;						\
+	}								\
+}									\
+									\
+ATOMIC_INLINE bool							\
+atomic_compare_exchange_strong_##short_type(atomic_##short_type##_t *a,	\
+    type *expected, type desired, atomic_memory_order_t success_mo,	\
+    atomic_memory_order_t failure_mo) {					\
+	/* We implement the weak version with strong semantics. */	\
+	return atomic_compare_exchange_weak_##short_type(a, expected,	\
+	    desired, success_mo, failure_mo);				\
+}
+
+
+#define JEMALLOC_GENERATE_INT_ATOMICS(type, short_type, lg_size)	\
+JEMALLOC_GENERATE_ATOMICS(type, short_type, lg_size)			\
+									\
+ATOMIC_INLINE type							\
+atomic_fetch_add_##short_type(atomic_##short_type##_t *a,		\
+    type val, atomic_memory_order_t mo) {				\
+	return (type)ATOMIC_INTERLOCKED_NAME(_InterlockedExchangeAdd,	\
+	    lg_size)(&a->repr, (ATOMIC_INTERLOCKED_REPR(lg_size))val);	\
+}									\
+									\
+ATOMIC_INLINE type							\
+atomic_fetch_sub_##short_type(atomic_##short_type##_t *a,		\
+    type val, atomic_memory_order_t mo) {				\
+	/*								\
+	 * MSVC warns on negation of unsigned operands, but for us it	\
+	 * gives exactly the right semantics (MAX_TYPE + 1 - operand).	\
+	 */								\
+	__pragma(warning(push))						\
+	__pragma(warning(disable: 4146))				\
+	return atomic_fetch_add_##short_type(a, -val, mo);		\
+	__pragma(warning(pop))						\
+}									\
+ATOMIC_INLINE type							\
+atomic_fetch_and_##short_type(atomic_##short_type##_t *a,		\
+    type val, atomic_memory_order_t mo) {				\
+	return (type)ATOMIC_INTERLOCKED_NAME(_InterlockedAnd, lg_size)(	\
+	    &a->repr, (ATOMIC_INTERLOCKED_REPR(lg_size))val);		\
+}									\
+ATOMIC_INLINE type							\
+atomic_fetch_or_##short_type(atomic_##short_type##_t *a,		\
+    type val, atomic_memory_order_t mo) {				\
+	return (type)ATOMIC_INTERLOCKED_NAME(_InterlockedOr, lg_size)(	\
+	    &a->repr, (ATOMIC_INTERLOCKED_REPR(lg_size))val);		\
+}									\
+ATOMIC_INLINE type							\
+atomic_fetch_xor_##short_type(atomic_##short_type##_t *a,		\
+    type val, atomic_memory_order_t mo) {				\
+	return (type)ATOMIC_INTERLOCKED_NAME(_InterlockedXor, lg_size)(	\
+	    &a->repr, (ATOMIC_INTERLOCKED_REPR(lg_size))val);		\
+}
+
+#endif /* JEMALLOC_INTERNAL_ATOMIC_MSVC_H */
diff --git a/deps/jemalloc/include/jemalloc/internal/background_thread_externs.h b/deps/jemalloc/include/jemalloc/internal/background_thread_externs.h
new file mode 100644
index 0000000..6ae3c8d
--- /dev/null
+++ b/deps/jemalloc/include/jemalloc/internal/background_thread_externs.h
@@ -0,0 +1,33 @@
+#ifndef JEMALLOC_INTERNAL_BACKGROUND_THREAD_EXTERNS_H
+#define JEMALLOC_INTERNAL_BACKGROUND_THREAD_EXTERNS_H
+
+extern bool opt_background_thread;
+extern size_t opt_max_background_threads;
+extern malloc_mutex_t background_thread_lock;
+extern atomic_b_t background_thread_enabled_state;
+extern size_t n_background_threads;
+extern size_t max_background_threads;
+extern background_thread_info_t *background_thread_info;
+
+bool background_thread_create(tsd_t *tsd, unsigned arena_ind);
+bool background_threads_enable(tsd_t *tsd);
+bool background_threads_disable(tsd_t *tsd);
+bool background_thread_is_started(background_thread_info_t* info);
+void background_thread_wakeup_early(background_thread_info_t *info,
+    nstime_t *remaining_sleep);
+void background_thread_prefork0(tsdn_t *tsdn);
+void background_thread_prefork1(tsdn_t *tsdn);
+void background_thread_postfork_parent(tsdn_t *tsdn);
+void background_thread_postfork_child(tsdn_t *tsdn);
+bool background_thread_stats_read(tsdn_t *tsdn,
+    background_thread_stats_t *stats);
+void background_thread_ctl_init(tsdn_t *tsdn);
+
+#ifdef JEMALLOC_PTHREAD_CREATE_WRAPPER
+extern int pthread_create_wrapper(pthread_t *__restrict, const pthread_attr_t *,
+    void *(*)(void *), void *__restrict);
+#endif
+bool background_thread_boot0(void);
+bool background_thread_boot1(tsdn_t *tsdn, base_t *base);
+
+#endif /* JEMALLOC_INTERNAL_BACKGROUND_THREAD_EXTERNS_H */
diff --git a/deps/jemalloc/include/jemalloc/internal/background_thread_inlines.h b/deps/jemalloc/include/jemalloc/internal/background_thread_inlines.h
new file mode 100644
index 0000000..92c5feb
--- /dev/null
+++ b/deps/jemalloc/include/jemalloc/internal/background_thread_inlines.h
@@ -0,0 +1,48 @@
+#ifndef JEMALLOC_INTERNAL_BACKGROUND_THREAD_INLINES_H
+#define JEMALLOC_INTERNAL_BACKGROUND_THREAD_INLINES_H
+
+JEMALLOC_ALWAYS_INLINE bool
+background_thread_enabled(void) {
+	return atomic_load_b(&background_thread_enabled_state, ATOMIC_RELAXED);
+}
+
+JEMALLOC_ALWAYS_INLINE void
+background_thread_enabled_set(tsdn_t *tsdn, bool state) {
+	malloc_mutex_assert_owner(tsdn, &background_thread_lock);
+	atomic_store_b(&background_thread_enabled_state, state, ATOMIC_RELAXED);
+}
+
+JEMALLOC_ALWAYS_INLINE background_thread_info_t *
+arena_background_thread_info_get(arena_t *arena) {
+	unsigned arena_ind = arena_ind_get(arena);
+	return &background_thread_info[arena_ind % max_background_threads];
+}
+
+JEMALLOC_ALWAYS_INLINE background_thread_info_t *
+background_thread_info_get(size_t ind) {
+	return &background_thread_info[ind % max_background_threads];
+}
+
+JEMALLOC_ALWAYS_INLINE uint64_t
+background_thread_wakeup_time_get(background_thread_info_t *info) {
+	uint64_t next_wakeup = nstime_ns(&info->next_wakeup);
+	assert(atomic_load_b(&info->indefinite_sleep, ATOMIC_ACQUIRE) ==
+	    (next_wakeup == BACKGROUND_THREAD_INDEFINITE_SLEEP));
+	return next_wakeup;
+}
+
+JEMALLOC_ALWAYS_INLINE void
+background_thread_wakeup_time_set(tsdn_t *tsdn, background_thread_info_t *info,
+    uint64_t wakeup_time) {
+	malloc_mutex_assert_owner(tsdn, &info->mtx);
+	atomic_store_b(&info->indefinite_sleep,
+	    wakeup_time == BACKGROUND_THREAD_INDEFINITE_SLEEP, ATOMIC_RELEASE);
+	nstime_init(&info->next_wakeup, wakeup_time);
+}
+
+JEMALLOC_ALWAYS_INLINE bool
+background_thread_indefinite_sleep(background_thread_info_t *info) {
+	return atomic_load_b(&info->indefinite_sleep, ATOMIC_ACQUIRE);
+}
+
+#endif /* JEMALLOC_INTERNAL_BACKGROUND_THREAD_INLINES_H */
diff --git a/deps/jemalloc/include/jemalloc/internal/background_thread_structs.h b/deps/jemalloc/include/jemalloc/internal/background_thread_structs.h
new file mode 100644
index 0000000..83a9198
--- /dev/null
+++ b/deps/jemalloc/include/jemalloc/internal/background_thread_structs.h
@@ -0,0 +1,66 @@
+#ifndef JEMALLOC_INTERNAL_BACKGROUND_THREAD_STRUCTS_H
+#define JEMALLOC_INTERNAL_BACKGROUND_THREAD_STRUCTS_H
+
+/* This file really combines "structs" and "types", but only transitionally. */
+
+#if defined(JEMALLOC_BACKGROUND_THREAD) || defined(JEMALLOC_LAZY_LOCK)
+#  define JEMALLOC_PTHREAD_CREATE_WRAPPER
+#endif
+
+#define BACKGROUND_THREAD_INDEFINITE_SLEEP UINT64_MAX
+#define MAX_BACKGROUND_THREAD_LIMIT MALLOCX_ARENA_LIMIT
+#define DEFAULT_NUM_BACKGROUND_THREAD 4
+
+/*
+ * These exist only as a transitional state.  Eventually, deferral should be
+ * part of the PAI, and each implementation can indicate wait times with more
+ * specificity.
+ */
+#define BACKGROUND_THREAD_HPA_INTERVAL_MAX_UNINITIALIZED (-2)
+#define BACKGROUND_THREAD_HPA_INTERVAL_MAX_DEFAULT_WHEN_ENABLED 5000
+
+#define BACKGROUND_THREAD_DEFERRED_MIN UINT64_C(0)
+#define BACKGROUND_THREAD_DEFERRED_MAX UINT64_MAX
+
+typedef enum {
+	background_thread_stopped,
+	background_thread_started,
+	/* Thread waits on the global lock when paused (for arena_reset). */
+	background_thread_paused,
+} background_thread_state_t;
+
+struct background_thread_info_s {
+#ifdef JEMALLOC_BACKGROUND_THREAD
+	/* Background thread is pthread specific. */
+	pthread_t		thread;
+	pthread_cond_t		cond;
+#endif
+	malloc_mutex_t		mtx;
+	background_thread_state_t	state;
+	/* When true, it means no wakeup scheduled. */
+	atomic_b_t		indefinite_sleep;
+	/* Next scheduled wakeup time (absolute time in ns). */
+	nstime_t		next_wakeup;
+	/*
+	 *  Since the last background thread run, newly added number of pages
+	 *  that need to be purged by the next wakeup.  This is adjusted on
+	 *  epoch advance, and is used to determine whether we should signal the
+	 *  background thread to wake up earlier.
+	 */
+	size_t			npages_to_purge_new;
+	/* Stats: total number of runs since started. */
+	uint64_t		tot_n_runs;
+	/* Stats: total sleep time since started. */
+	nstime_t		tot_sleep_time;
+};
+typedef struct background_thread_info_s background_thread_info_t;
+
+struct background_thread_stats_s {
+	size_t num_threads;
+	uint64_t num_runs;
+	nstime_t run_interval;
+	mutex_prof_data_t max_counter_per_bg_thd;
+};
+typedef struct background_thread_stats_s background_thread_stats_t;
+
+#endif /* JEMALLOC_INTERNAL_BACKGROUND_THREAD_STRUCTS_H */
diff --git a/deps/jemalloc/include/jemalloc/internal/base.h b/deps/jemalloc/include/jemalloc/internal/base.h
new file mode 100644
index 0000000..9b2c9fb
--- /dev/null
+++ b/deps/jemalloc/include/jemalloc/internal/base.h
@@ -0,0 +1,110 @@
+#ifndef JEMALLOC_INTERNAL_BASE_H
+#define JEMALLOC_INTERNAL_BASE_H
+
+#include "jemalloc/internal/edata.h"
+#include "jemalloc/internal/ehooks.h"
+#include "jemalloc/internal/mutex.h"
+
+enum metadata_thp_mode_e {
+	metadata_thp_disabled   = 0,
+	/*
+	 * Lazily enable hugepage for metadata. To avoid high RSS caused by THP
+	 * + low usage arena (i.e. THP becomes a significant percentage), the
+	 * "auto" option only starts using THP after a base allocator used up
+	 * the first THP region.  Starting from the second hugepage (in a single
+	 * arena), "auto" behaves the same as "always", i.e. madvise hugepage
+	 * right away.
+	 */
+	metadata_thp_auto       = 1,
+	metadata_thp_always     = 2,
+	metadata_thp_mode_limit = 3
+};
+typedef enum metadata_thp_mode_e metadata_thp_mode_t;
+
+#define METADATA_THP_DEFAULT metadata_thp_disabled
+extern metadata_thp_mode_t opt_metadata_thp;
+extern const char *metadata_thp_mode_names[];
+
+
+/* Embedded at the beginning of every block of base-managed virtual memory. */
+typedef struct base_block_s base_block_t;
+struct base_block_s {
+	/* Total size of block's virtual memory mapping. */
+	size_t size;
+
+	/* Next block in list of base's blocks. */
+	base_block_t *next;
+
+	/* Tracks unused trailing space. */
+	edata_t edata;
+};
+
+typedef struct base_s base_t;
+struct base_s {
+	/*
+	 * User-configurable extent hook functions.
+	 */
+	ehooks_t ehooks;
+
+	/*
+	 * User-configurable extent hook functions for metadata allocations.
+	 */
+	ehooks_t ehooks_base;
+
+	/* Protects base_alloc() and base_stats_get() operations. */
+	malloc_mutex_t mtx;
+
+	/* Using THP when true (metadata_thp auto mode). */
+	bool auto_thp_switched;
+	/*
+	 * Most recent size class in the series of increasingly large base
+	 * extents.  Logarithmic spacing between subsequent allocations ensures
+	 * that the total number of distinct mappings remains small.
+	 */
+	pszind_t pind_last;
+
+	/* Serial number generation state. */
+	size_t extent_sn_next;
+
+	/* Chain of all blocks associated with base. */
+	base_block_t *blocks;
+
+	/* Heap of extents that track unused trailing space within blocks. */
+	edata_heap_t avail[SC_NSIZES];
+
+	/* Stats, only maintained if config_stats. */
+	size_t allocated;
+	size_t resident;
+	size_t mapped;
+	/* Number of THP regions touched. */
+	size_t n_thp;
+};
+
+static inline unsigned
+base_ind_get(const base_t *base) {
+	return ehooks_ind_get(&base->ehooks);
+}
+
+static inline bool
+metadata_thp_enabled(void) {
+	return (opt_metadata_thp != metadata_thp_disabled);
+}
+
+base_t *b0get(void);
+base_t *base_new(tsdn_t *tsdn, unsigned ind,
+    const extent_hooks_t *extent_hooks, bool metadata_use_hooks);
+void base_delete(tsdn_t *tsdn, base_t *base);
+ehooks_t *base_ehooks_get(base_t *base);
+ehooks_t *base_ehooks_get_for_metadata(base_t *base);
+extent_hooks_t *base_extent_hooks_set(base_t *base,
+    extent_hooks_t *extent_hooks);
+void *base_alloc(tsdn_t *tsdn, base_t *base, size_t size, size_t alignment);
+edata_t *base_alloc_edata(tsdn_t *tsdn, base_t *base);
+void base_stats_get(tsdn_t *tsdn, base_t *base, size_t *allocated,
+    size_t *resident, size_t *mapped, size_t *n_thp);
+void base_prefork(tsdn_t *tsdn, base_t *base);
+void base_postfork_parent(tsdn_t *tsdn, base_t *base);
+void base_postfork_child(tsdn_t *tsdn, base_t *base);
+bool base_boot(tsdn_t *tsdn);
+
+#endif /* JEMALLOC_INTERNAL_BASE_H */
diff --git a/deps/jemalloc/include/jemalloc/internal/bin.h b/deps/jemalloc/include/jemalloc/internal/bin.h
new file mode 100644
index 0000000..63f9739
--- /dev/null
+++ b/deps/jemalloc/include/jemalloc/internal/bin.h
@@ -0,0 +1,82 @@
+#ifndef JEMALLOC_INTERNAL_BIN_H
+#define JEMALLOC_INTERNAL_BIN_H
+
+#include "jemalloc/internal/bin_stats.h"
+#include "jemalloc/internal/bin_types.h"
+#include "jemalloc/internal/edata.h"
+#include "jemalloc/internal/mutex.h"
+#include "jemalloc/internal/sc.h"
+
+/*
+ * A bin contains a set of extents that are currently being used for slab
+ * allocations.
+ */
+typedef struct bin_s bin_t;
+struct bin_s {
+	/* All operations on bin_t fields require lock ownership. */
+	malloc_mutex_t		lock;
+
+	/*
+	 * Bin statistics.  These get touched every time the lock is acquired,
+	 * so put them close by in the hopes of getting some cache locality.
+	 */
+	bin_stats_t	stats;
+
+	/*
+	 * Current slab being used to service allocations of this bin's size
+	 * class.  slabcur is independent of slabs_{nonfull,full}; whenever
+	 * slabcur is reassigned, the previous slab must be deallocated or
+	 * inserted into slabs_{nonfull,full}.
+	 */
+	edata_t			*slabcur;
+
+	/*
+	 * Heap of non-full slabs.  This heap is used to assure that new
+	 * allocations come from the non-full slab that is oldest/lowest in
+	 * memory.
+	 */
+	edata_heap_t		slabs_nonfull;
+
+	/* List used to track full slabs. */
+	edata_list_active_t	slabs_full;
+};
+
+/* A set of sharded bins of the same size class. */
+typedef struct bins_s bins_t;
+struct bins_s {
+	/* Sharded bins.  Dynamically sized. */
+	bin_t *bin_shards;
+};
+
+void bin_shard_sizes_boot(unsigned bin_shards[SC_NBINS]);
+bool bin_update_shard_size(unsigned bin_shards[SC_NBINS], size_t start_size,
+    size_t end_size, size_t nshards);
+
+/* Initializes a bin to empty.  Returns true on error. */
+bool bin_init(bin_t *bin);
+
+/* Forking. */
+void bin_prefork(tsdn_t *tsdn, bin_t *bin);
+void bin_postfork_parent(tsdn_t *tsdn, bin_t *bin);
+void bin_postfork_child(tsdn_t *tsdn, bin_t *bin);
+
+/* Stats. */
+static inline void
+bin_stats_merge(tsdn_t *tsdn, bin_stats_data_t *dst_bin_stats, bin_t *bin) {
+	malloc_mutex_lock(tsdn, &bin->lock);
+	malloc_mutex_prof_accum(tsdn, &dst_bin_stats->mutex_data, &bin->lock);
+	bin_stats_t *stats = &dst_bin_stats->stats_data;
+	stats->nmalloc += bin->stats.nmalloc;
+	stats->ndalloc += bin->stats.ndalloc;
+	stats->nrequests += bin->stats.nrequests;
+	stats->curregs += bin->stats.curregs;
+	stats->nfills += bin->stats.nfills;
+	stats->nflushes += bin->stats.nflushes;
+	stats->nslabs += bin->stats.nslabs;
+	stats->reslabs += bin->stats.reslabs;
+	stats->curslabs += bin->stats.curslabs;
+	stats->nonfull_slabs += bin->stats.nonfull_slabs;
+	malloc_mutex_unlock(tsdn, &bin->lock);
+}
+
+#endif /* JEMALLOC_INTERNAL_BIN_H */
diff --git a/deps/jemalloc/include/jemalloc/internal/bin_info.h b/deps/jemalloc/include/jemalloc/internal/bin_info.h
new file mode 100644
index 0000000..7fe65c8
--- /dev/null
+++ b/deps/jemalloc/include/jemalloc/internal/bin_info.h
@@ -0,0 +1,50 @@
+#ifndef JEMALLOC_INTERNAL_BIN_INFO_H
+#define JEMALLOC_INTERNAL_BIN_INFO_H
+
+#include "jemalloc/internal/bitmap.h"
+
+/*
+ * Read-only information associated with each element of arena_t's bins array
+ * is stored separately, partly to reduce memory usage (only one copy, rather
+ * than one per arena), but mainly to avoid false cacheline sharing.
+ *
+ * Each slab has the following layout:
+ *
+ *   /--------------------\
+ *   | region 0           |
+ *   |--------------------|
+ *   | region 1           |
+ *   |--------------------|
+ *   | ...                |
+ *   | ...                |
+ *   | ...                |
+ *   |--------------------|
+ *   | region nregs-1     |
+ *   \--------------------/
+ */
+typedef struct bin_info_s bin_info_t;
+struct bin_info_s {
+	/* Size of regions in a slab for this bin's size class. */
+	size_t			reg_size;
+
+	/* Total size of a slab for this bin's size class. */
+	size_t			slab_size;
+
+	/* Total number of regions in a slab for this bin's size class. */
+	uint32_t		nregs;
+
+	/* Number of sharded bins in each arena for this size class. */
+	uint32_t		n_shards;
+
+	/*
+	 * Metadata used to manipulate bitmaps for slabs associated with this
+	 * bin.
+	 */
+	bitmap_info_t		bitmap_info;
+};
+
+extern bin_info_t bin_infos[SC_NBINS];
+
+void bin_info_boot(sc_data_t *sc_data, unsigned bin_shard_sizes[SC_NBINS]);
+
+#endif /* JEMALLOC_INTERNAL_BIN_INFO_H */
diff --git a/deps/jemalloc/include/jemalloc/internal/bin_stats.h b/deps/jemalloc/include/jemalloc/internal/bin_stats.h
new file mode 100644
index 0000000..0b99297
--- /dev/null
+++ b/deps/jemalloc/include/jemalloc/internal/bin_stats.h
@@ -0,0 +1,57 @@
+#ifndef JEMALLOC_INTERNAL_BIN_STATS_H
+#define JEMALLOC_INTERNAL_BIN_STATS_H
+
+#include "jemalloc/internal/mutex_prof.h"
+
+typedef struct bin_stats_s bin_stats_t;
+struct bin_stats_s {
+	/*
+	 * Total number of allocation/deallocation requests served directly by
+	 * the bin.  Note that tcache may allocate an object, then recycle it
+	 * many times, resulting many increments to nrequests, but only one
+	 * each to nmalloc and ndalloc.
+	 */
+	uint64_t	nmalloc;
+	uint64_t	ndalloc;
+
+	/*
+	 * Number of allocation requests that correspond to the size of this
+	 * bin.  This includes requests served by tcache, though tcache only
+	 * periodically merges into this counter.
+	 */
+	uint64_t	nrequests;
+
+	/*
+	 * Current number of regions of this size class, including regions
+	 * currently cached by tcache.
+	 */
+	size_t		curregs;
+
+	/* Number of tcache fills from this bin. */
+	uint64_t	nfills;
+
+	/* Number of tcache flushes to this bin. */
+	uint64_t	nflushes;
+
+	/* Total number of slabs created for this bin's size class. */
+	uint64_t	nslabs;
+
+	/*
+	 * Total number of slabs reused by extracting them from the slabs heap
+	 * for this bin's size class.
+	 */
+	uint64_t	reslabs;
+
+	/* Current number of slabs in this bin. */
+	size_t		curslabs;
+
+	/* Current size of nonfull slabs heap in this bin. */
+	size_t		nonfull_slabs;
+};
+
+typedef struct bin_stats_data_s bin_stats_data_t;
+struct bin_stats_data_s {
+	bin_stats_t stats_data;
+	mutex_prof_data_t mutex_data;
+};
+#endif /* JEMALLOC_INTERNAL_BIN_STATS_H */
diff --git a/deps/jemalloc/include/jemalloc/internal/bin_types.h b/deps/jemalloc/include/jemalloc/internal/bin_types.h
new file mode 100644
index 0000000..945e832
--- /dev/null
+++ b/deps/jemalloc/include/jemalloc/internal/bin_types.h
@@ -0,0 +1,17 @@
+#ifndef JEMALLOC_INTERNAL_BIN_TYPES_H
+#define JEMALLOC_INTERNAL_BIN_TYPES_H
+
+#include "jemalloc/internal/sc.h"
+
+#define BIN_SHARDS_MAX (1 << EDATA_BITS_BINSHARD_WIDTH)
+#define N_BIN_SHARDS_DEFAULT 1
+
+/* Used in TSD static initializer only. Real init in arena_bind(). */
+#define TSD_BINSHARDS_ZERO_INITIALIZER {{UINT8_MAX}}
+
+typedef struct tsd_binshards_s tsd_binshards_t;
+struct tsd_binshards_s {
+	uint8_t binshard[SC_NBINS];
+};
+
+#endif /* JEMALLOC_INTERNAL_BIN_TYPES_H */
diff --git a/deps/jemalloc/include/jemalloc/internal/bit_util.h b/deps/jemalloc/include/jemalloc/internal/bit_util.h
new file mode 100644
index 0000000..bac5914
--- /dev/null
+++ b/deps/jemalloc/include/jemalloc/internal/bit_util.h
@@ -0,0 +1,422 @@
+#ifndef JEMALLOC_INTERNAL_BIT_UTIL_H
+#define JEMALLOC_INTERNAL_BIT_UTIL_H
+
+#include "jemalloc/internal/assert.h"
+
+/* Sanity check. */
+#if !defined(JEMALLOC_INTERNAL_FFSLL) || !defined(JEMALLOC_INTERNAL_FFSL) \
+    || !defined(JEMALLOC_INTERNAL_FFS)
+#  error JEMALLOC_INTERNAL_FFS{,L,LL} should have been defined by configure
+#endif
+
+/*
+ * Unlike the builtins and posix ffs functions, our ffs requires a non-zero
+ * input, and returns the position of the lowest bit set (as opposed to the
+ * posix versions, which return 1 larger than that position and use a return
+ * value of zero as a sentinel.  This tends to simplify logic in callers, and
+ * allows for consistency with the builtins we build fls on top of.
+ */
+static inline unsigned
+ffs_llu(unsigned long long x) {
+	util_assume(x != 0);
+	return JEMALLOC_INTERNAL_FFSLL(x) - 1;
+}
+
+static inline unsigned
+ffs_lu(unsigned long x) {
+	util_assume(x != 0);
+	return JEMALLOC_INTERNAL_FFSL(x) - 1;
+}
+
+static inline unsigned
+ffs_u(unsigned x) {
+	util_assume(x != 0);
+	return JEMALLOC_INTERNAL_FFS(x) - 1;
+}
+
+#define DO_FLS_SLOW(x, suffix) do {					\
+	util_assume(x != 0);						\
+	x |= (x >> 1);							\
+	x |= (x >> 2);							\
+	x |= (x >> 4);							\
+	x |= (x >> 8);							\
+	x |= (x >> 16);							\
+	if (sizeof(x) > 4) {						\
+		/*							\
+		 * If sizeof(x) is 4, then the expression "x >> 32"	\
+		 * will generate compiler warnings even if the code	\
+		 * never executes.  This circumvents the warning, and	\
+		 * gets compiled out in optimized builds.		\
+		 */							\
+		int constant_32 = sizeof(x) * 4;			\
+		x |= (x >> constant_32);				\
+	}								\
+	x++;								\
+	if (x == 0) {							\
+		return 8 * sizeof(x) - 1;				\
+	}								\
+	return ffs_##suffix(x) - 1;					\
+} while(0)
+
+static inline unsigned
+fls_llu_slow(unsigned long long x) {
+	DO_FLS_SLOW(x, llu);
+}
+
+static inline unsigned
+fls_lu_slow(unsigned long x) {
+	DO_FLS_SLOW(x, lu);
+}
+
+static inline unsigned
+fls_u_slow(unsigned x) {
+	DO_FLS_SLOW(x, u);
+}
+
+#undef DO_FLS_SLOW
+
+#ifdef JEMALLOC_HAVE_BUILTIN_CLZ
+static inline unsigned
+fls_llu(unsigned long long x) {
+	util_assume(x != 0);
+	/*
+	 * Note that the xor here is more naturally written as subtraction; the
+	 * last bit set is the number of bits in the type minus the number of
+	 * leading zero bits.  But GCC implements that as:
+	 *    bsr     edi, edi
+	 *    mov     eax, 31
+	 *    xor     edi, 31
+	 *    sub     eax, edi
+	 * If we write it as xor instead, then we get
+	 *    bsr     eax, edi
+	 * as desired.
+	 */
+	return (8 * sizeof(x) - 1) ^ __builtin_clzll(x);
+}
+
+static inline unsigned
+fls_lu(unsigned long x) {
+	util_assume(x != 0);
+	return (8 * sizeof(x) - 1) ^ __builtin_clzl(x);
+}
+
+static inline unsigned
+fls_u(unsigned x) {
+	util_assume(x != 0);
+	return (8 * sizeof(x) - 1) ^ __builtin_clz(x);
+}
+#elif defined(_MSC_VER)
+
+#if LG_SIZEOF_PTR == 3
+#define DO_BSR64(bit, x) _BitScanReverse64(&bit, x)
+#else
+/*
+ * This never actually runs; we're just dodging a compiler error for the
+ * never-taken branch where sizeof(void *) == 8.
+ */
+#define DO_BSR64(bit, x) bit = 0; unreachable()
+#endif
+
+#define DO_FLS(x) do {							\
+	if (x == 0) {							\
+		return 8 * sizeof(x);					\
+	}								\
+	unsigned long bit;						\
+	if (sizeof(x) == 4) {						\
+		_BitScanReverse(&bit, (unsigned)x);			\
+		return (unsigned)bit;					\
+	}								\
+	if (sizeof(x) == 8 && sizeof(void *) == 8) {			\
+		DO_BSR64(bit, x);					\
+		return (unsigned)bit;					\
+	}								\
+	if (sizeof(x) == 8 && sizeof(void *) == 4) {			\
+		/* Dodge a compiler warning, as above. */		\
+		int constant_32 = sizeof(x) * 4;			\
+		if (_BitScanReverse(&bit,				\
+		    (unsigned)(x >> constant_32))) {			\
+			return 32 + (unsigned)bit;			\
+		} else {						\
+			_BitScanReverse(&bit, (unsigned)x);		\
+			return (unsigned)bit;				\
+		}							\
+	}								\
+	unreachable();							\
+} while (0)
+
+static inline unsigned
+fls_llu(unsigned long long x) {
+	DO_FLS(x);
+}
+
+static inline unsigned
+fls_lu(unsigned long x) {
+	DO_FLS(x);
+}
+
+static inline unsigned
+fls_u(unsigned x) {
+	DO_FLS(x);
+}
+
+#undef DO_FLS
+#undef DO_BSR64
+#else
+
+static inline unsigned
+fls_llu(unsigned long long x) {
+	return fls_llu_slow(x);
+}
+
+static inline unsigned
+fls_lu(unsigned long x) {
+	return fls_lu_slow(x);
+}
+
+static inline unsigned
+fls_u(unsigned x) {
+	return fls_u_slow(x);
+}
+#endif
+
+#if LG_SIZEOF_LONG_LONG > 3
+#  error "Haven't implemented popcount for 16-byte ints."
+#endif
+
+#define DO_POPCOUNT(x, type) do {					\
+	/*								\
+	 * Algorithm from an old AMD optimization reference manual.	\
+	 * We're putting a little bit more work than you might expect	\
+	 * into the no-instrinsic case, since we only support the	\
+	 * GCC intrinsics spelling of popcount (for now).  Detecting	\
+	 * whether or not the popcount builtin is actually useable in	\
+	 * MSVC is nontrivial.						\
+	 */								\
+									\
+	type bmul = (type)0x0101010101010101ULL;			\
+									\
+	/*								\
+	 * Replace each 2 bits with the sideways sum of the original	\
+	 * values.  0x5 = 0b0101.					\
+	 *								\
+	 * You might expect this to be:					\
+	 *   x = (x & 0x55...) + ((x >> 1) & 0x55...).			\
+	 * That costs an extra mask relative to this, though.		\
+	 */								\
+	x = x - ((x >> 1) & (0x55U * bmul));				\
+	/* Replace each 4 bits with their sideays sum.  0x3 = 0b0011. */\
+	x = (x & (bmul * 0x33U)) + ((x >> 2) & (bmul * 0x33U));		\
+	/*								\
+	 * Replace each 8 bits with their sideways sum.  Note that we	\
+	 * can't overflow within each 4-bit sum here, so we can skip	\
+	 * the initial mask.						\
+	 */								\
+	x = (x + (x >> 4)) & (bmul * 0x0FU);				\
+	/*								\
+	 * None of the partial sums in this multiplication (viewed in	\
+	 * base-256) can overflow into the next digit.  So the least	\
+	 * significant byte of the product will be the least		\
+	 * significant byte of the original value, the second least	\
+	 * significant byte will be the sum of the two least		\
+	 * significant bytes of the original value, and so on.		\
+	 * Importantly, the high byte will be the byte-wise sum of all	\
+	 * the bytes of the original value.				\
+	 */								\
+	x = x * bmul;							\
+	x >>= ((sizeof(x) - 1) * 8);					\
+	return (unsigned)x;						\
+} while(0)
+
+static inline unsigned
+popcount_u_slow(unsigned bitmap) {
+	DO_POPCOUNT(bitmap, unsigned);
+}
+
+static inline unsigned
+popcount_lu_slow(unsigned long bitmap) {
+	DO_POPCOUNT(bitmap, unsigned long);
+}
+
+static inline unsigned
+popcount_llu_slow(unsigned long long bitmap) {
+	DO_POPCOUNT(bitmap, unsigned long long);
+}
+
+#undef DO_POPCOUNT
+
+static inline unsigned
+popcount_u(unsigned bitmap) {
+#ifdef JEMALLOC_INTERNAL_POPCOUNT
+	return JEMALLOC_INTERNAL_POPCOUNT(bitmap);
+#else
+	return popcount_u_slow(bitmap);
+#endif
+}
+
+static inline unsigned
+popcount_lu(unsigned long bitmap) {
+#ifdef JEMALLOC_INTERNAL_POPCOUNTL
+	return JEMALLOC_INTERNAL_POPCOUNTL(bitmap);
+#else
+	return popcount_lu_slow(bitmap);
+#endif
+}
+
+static inline unsigned
+popcount_llu(unsigned long long bitmap) {
+#ifdef JEMALLOC_INTERNAL_POPCOUNTLL
+	return JEMALLOC_INTERNAL_POPCOUNTLL(bitmap);
+#else
+	return popcount_llu_slow(bitmap);
+#endif
+}
+
+/*
+ * Clears first unset bit in bitmap, and returns
+ * place of bit.  bitmap *must not* be 0.
+ */
+
+static inline size_t
+cfs_lu(unsigned long* bitmap) {
+	util_assume(*bitmap != 0);
+	size_t bit = ffs_lu(*bitmap);
+	*bitmap ^= ZU(1) << bit;
+	return bit;
+}
+
+static inline unsigned
+ffs_zu(size_t x) {
+#if LG_SIZEOF_PTR == LG_SIZEOF_INT
+	return ffs_u(x);
+#elif LG_SIZEOF_PTR == LG_SIZEOF_LONG
+	return ffs_lu(x);
+#elif LG_SIZEOF_PTR == LG_SIZEOF_LONG_LONG
+	return ffs_llu(x);
+#else
+#error No implementation for size_t ffs()
+#endif
+}
+
+static inline unsigned
+fls_zu(size_t x) {
+#if LG_SIZEOF_PTR == LG_SIZEOF_INT
+	return fls_u(x);
+#elif LG_SIZEOF_PTR == LG_SIZEOF_LONG
+	return fls_lu(x);
+#elif LG_SIZEOF_PTR == LG_SIZEOF_LONG_LONG
+	return fls_llu(x);
+#else
+#error No implementation for size_t fls()
+#endif
+}
+
+
+static inline unsigned
+ffs_u64(uint64_t x) {
+#if LG_SIZEOF_LONG == 3
+	return ffs_lu(x);
+#elif LG_SIZEOF_LONG_LONG == 3
+	return ffs_llu(x);
+#else
+#error No implementation for 64-bit ffs()
+#endif
+}
+
+static inline unsigned
+fls_u64(uint64_t x) {
+#if LG_SIZEOF_LONG == 3
+	return fls_lu(x);
+#elif LG_SIZEOF_LONG_LONG == 3
+	return fls_llu(x);
+#else
+#error No implementation for 64-bit fls()
+#endif
+}
+
+static inline unsigned
+ffs_u32(uint32_t x) {
+#if LG_SIZEOF_INT == 2
+	return ffs_u(x);
+#else
+#error No implementation for 32-bit ffs()
+#endif
+	return ffs_u(x);
+}
+
+static inline unsigned
+fls_u32(uint32_t x) {
+#if LG_SIZEOF_INT == 2
+	return fls_u(x);
+#else
+#error No implementation for 32-bit fls()
+#endif
+	return fls_u(x);
+}
+
+static inline uint64_t
+pow2_ceil_u64(uint64_t x) {
+	if (unlikely(x <= 1)) {
+		return x;
+	}
+	size_t msb_on_index = fls_u64(x - 1);
+	/*
+	 * Range-check; it's on the callers to ensure that the result of this
+	 * call won't overflow.
+	 */
+	assert(msb_on_index < 63);
+	return 1ULL << (msb_on_index + 1);
+}
+
+static inline uint32_t
+pow2_ceil_u32(uint32_t x) {
+	if (unlikely(x <= 1)) {
+	    return x;
+	}
+	size_t msb_on_index = fls_u32(x - 1);
+	/* As above. */
+	assert(msb_on_index < 31);
+	return 1U << (msb_on_index + 1);
+}
+
+/* Compute the smallest power of 2 that is >= x. */
+static inline size_t
+pow2_ceil_zu(size_t x) {
+#if (LG_SIZEOF_PTR == 3)
+	return pow2_ceil_u64(x);
+#else
+	return pow2_ceil_u32(x);
+#endif
+}
+
+static inline unsigned
+lg_floor(size_t x) {
+	util_assume(x != 0);
+#if (LG_SIZEOF_PTR == 3)
+	return fls_u64(x);
+#else
+	return fls_u32(x);
+#endif
+}
+
+static inline unsigned
+lg_ceil(size_t x) {
+	return lg_floor(x) + ((x & (x - 1)) == 0 ? 0 : 1);
+}
+
+/* A compile-time version of lg_floor and lg_ceil. */
+#define LG_FLOOR_1(x) 0
+#define LG_FLOOR_2(x) (x < (1ULL << 1) ? LG_FLOOR_1(x) : 1 + LG_FLOOR_1(x >> 1))
+#define LG_FLOOR_4(x) (x < (1ULL << 2) ? LG_FLOOR_2(x) : 2 + LG_FLOOR_2(x >> 2))
+#define LG_FLOOR_8(x) (x < (1ULL << 4) ? LG_FLOOR_4(x) : 4 + LG_FLOOR_4(x >> 4))
+#define LG_FLOOR_16(x) (x < (1ULL << 8) ? LG_FLOOR_8(x) : 8 + LG_FLOOR_8(x >> 8))
+#define LG_FLOOR_32(x) (x < (1ULL << 16) ? LG_FLOOR_16(x) : 16 + LG_FLOOR_16(x >> 16))
+#define LG_FLOOR_64(x) (x < (1ULL << 32) ? LG_FLOOR_32(x) : 32 + LG_FLOOR_32(x >> 32))
+#if LG_SIZEOF_PTR == 2
+#  define LG_FLOOR(x) LG_FLOOR_32((x))
+#else
+#  define LG_FLOOR(x) LG_FLOOR_64((x))
+#endif
+
+#define LG_CEIL(x) (LG_FLOOR(x) + (((x) & ((x) - 1)) == 0 ? 0 : 1))
+
+#endif /* JEMALLOC_INTERNAL_BIT_UTIL_H */
diff --git a/deps/jemalloc/include/jemalloc/internal/bitmap.h b/deps/jemalloc/include/jemalloc/internal/bitmap.h
new file mode 100644
index 0000000..dc19454
--- /dev/null
+++ b/deps/jemalloc/include/jemalloc/internal/bitmap.h
@@ -0,0 +1,368 @@
+#ifndef JEMALLOC_INTERNAL_BITMAP_H
+#define JEMALLOC_INTERNAL_BITMAP_H
+
+#include "jemalloc/internal/bit_util.h"
+#include "jemalloc/internal/sc.h"
+
+typedef unsigned long bitmap_t;
+#define LG_SIZEOF_BITMAP	LG_SIZEOF_LONG
+
+/* Maximum bitmap bit count is 2^LG_BITMAP_MAXBITS. */
+#if SC_LG_SLAB_MAXREGS > LG_CEIL(SC_NSIZES)
+/* Maximum bitmap bit count is determined by maximum regions per slab. */
+#  define LG_BITMAP_MAXBITS	SC_LG_SLAB_MAXREGS
+#else
+/* Maximum bitmap bit count is determined by number of extent size classes. */
+#  define LG_BITMAP_MAXBITS	LG_CEIL(SC_NSIZES)
+#endif
+#define BITMAP_MAXBITS		(ZU(1) << LG_BITMAP_MAXBITS)
+
+/* Number of bits per group. */
+#define LG_BITMAP_GROUP_NBITS		(LG_SIZEOF_BITMAP + 3)
+#define BITMAP_GROUP_NBITS		(1U << LG_BITMAP_GROUP_NBITS)
+#define BITMAP_GROUP_NBITS_MASK		(BITMAP_GROUP_NBITS-1)
+
+/*
+ * Do some analysis on how big the bitmap is before we use a tree.  For a brute
+ * force linear search, if we would have to call ffs_lu() more than 2^3 times,
+ * use a tree instead.
+ */
+#if LG_BITMAP_MAXBITS - LG_BITMAP_GROUP_NBITS > 3
+#  define BITMAP_USE_TREE
+#endif
+
+/* Number of groups required to store a given number of bits. */
+#define BITMAP_BITS2GROUPS(nbits)					\
+    (((nbits) + BITMAP_GROUP_NBITS_MASK) >> LG_BITMAP_GROUP_NBITS)
+
+/*
+ * Number of groups required at a particular level for a given number of bits.
+ */
+#define BITMAP_GROUPS_L0(nbits)						\
+    BITMAP_BITS2GROUPS(nbits)
+#define BITMAP_GROUPS_L1(nbits)						\
+    BITMAP_BITS2GROUPS(BITMAP_BITS2GROUPS(nbits))
+#define BITMAP_GROUPS_L2(nbits)						\
+    BITMAP_BITS2GROUPS(BITMAP_BITS2GROUPS(BITMAP_BITS2GROUPS((nbits))))
+#define BITMAP_GROUPS_L3(nbits)						\
+    BITMAP_BITS2GROUPS(BITMAP_BITS2GROUPS(BITMAP_BITS2GROUPS(		\
+	BITMAP_BITS2GROUPS((nbits)))))
+#define BITMAP_GROUPS_L4(nbits)						\
+    BITMAP_BITS2GROUPS(BITMAP_BITS2GROUPS(BITMAP_BITS2GROUPS(		\
+	BITMAP_BITS2GROUPS(BITMAP_BITS2GROUPS((nbits))))))
+
+/*
+ * Assuming the number of levels, number of groups required for a given number
+ * of bits.
+ */
+#define BITMAP_GROUPS_1_LEVEL(nbits)					\
+    BITMAP_GROUPS_L0(nbits)
+#define BITMAP_GROUPS_2_LEVEL(nbits)					\
+    (BITMAP_GROUPS_1_LEVEL(nbits) + BITMAP_GROUPS_L1(nbits))
+#define BITMAP_GROUPS_3_LEVEL(nbits)					\
+    (BITMAP_GROUPS_2_LEVEL(nbits) + BITMAP_GROUPS_L2(nbits))
+#define BITMAP_GROUPS_4_LEVEL(nbits)					\
+    (BITMAP_GROUPS_3_LEVEL(nbits) + BITMAP_GROUPS_L3(nbits))
+#define BITMAP_GROUPS_5_LEVEL(nbits)					\
+    (BITMAP_GROUPS_4_LEVEL(nbits) + BITMAP_GROUPS_L4(nbits))
+
+/*
+ * Maximum number of groups required to support LG_BITMAP_MAXBITS.
+ */
+#ifdef BITMAP_USE_TREE
+
+#if LG_BITMAP_MAXBITS <= LG_BITMAP_GROUP_NBITS
+#  define BITMAP_GROUPS(nbits)	BITMAP_GROUPS_1_LEVEL(nbits)
+#  define BITMAP_GROUPS_MAX	BITMAP_GROUPS_1_LEVEL(BITMAP_MAXBITS)
+#elif LG_BITMAP_MAXBITS <= LG_BITMAP_GROUP_NBITS * 2
+#  define BITMAP_GROUPS(nbits)	BITMAP_GROUPS_2_LEVEL(nbits)
+#  define BITMAP_GROUPS_MAX	BITMAP_GROUPS_2_LEVEL(BITMAP_MAXBITS)
+#elif LG_BITMAP_MAXBITS <= LG_BITMAP_GROUP_NBITS * 3
+#  define BITMAP_GROUPS(nbits)	BITMAP_GROUPS_3_LEVEL(nbits)
+#  define BITMAP_GROUPS_MAX	BITMAP_GROUPS_3_LEVEL(BITMAP_MAXBITS)
+#elif LG_BITMAP_MAXBITS <= LG_BITMAP_GROUP_NBITS * 4
+#  define BITMAP_GROUPS(nbits)	BITMAP_GROUPS_4_LEVEL(nbits)
+#  define BITMAP_GROUPS_MAX	BITMAP_GROUPS_4_LEVEL(BITMAP_MAXBITS)
+#elif LG_BITMAP_MAXBITS <= LG_BITMAP_GROUP_NBITS * 5
+#  define BITMAP_GROUPS(nbits)	BITMAP_GROUPS_5_LEVEL(nbits)
+#  define BITMAP_GROUPS_MAX	BITMAP_GROUPS_5_LEVEL(BITMAP_MAXBITS)
+#else
+#  error "Unsupported bitmap size"
+#endif
+
+/*
+ * Maximum number of levels possible.  This could be statically computed based
+ * on LG_BITMAP_MAXBITS:
+ *
+ * #define BITMAP_MAX_LEVELS \
+ *     (LG_BITMAP_MAXBITS / LG_SIZEOF_BITMAP) \
+ *     + !!(LG_BITMAP_MAXBITS % LG_SIZEOF_BITMAP)
+ *
+ * However, that would not allow the generic BITMAP_INFO_INITIALIZER() macro, so
+ * instead hardcode BITMAP_MAX_LEVELS to the largest number supported by the
+ * various cascading macros.  The only additional cost this incurs is some
+ * unused trailing entries in bitmap_info_t structures; the bitmaps themselves
+ * are not impacted.
+ */
+#define BITMAP_MAX_LEVELS	5
+
+#define BITMAP_INFO_INITIALIZER(nbits) {				\
+	/* nbits. */							\
+	nbits,								\
+	/* nlevels. */							\
+	(BITMAP_GROUPS_L0(nbits) > BITMAP_GROUPS_L1(nbits)) +		\
+	    (BITMAP_GROUPS_L1(nbits) > BITMAP_GROUPS_L2(nbits)) +	\
+	    (BITMAP_GROUPS_L2(nbits) > BITMAP_GROUPS_L3(nbits)) +	\
+	    (BITMAP_GROUPS_L3(nbits) > BITMAP_GROUPS_L4(nbits)) + 1,	\
+	/* levels. */							\
+	{								\
+		{0},							\
+		{BITMAP_GROUPS_L0(nbits)},				\
+		{BITMAP_GROUPS_L1(nbits) + BITMAP_GROUPS_L0(nbits)},	\
+		{BITMAP_GROUPS_L2(nbits) + BITMAP_GROUPS_L1(nbits) +	\
+		    BITMAP_GROUPS_L0(nbits)},				\
+		{BITMAP_GROUPS_L3(nbits) + BITMAP_GROUPS_L2(nbits) +	\
+		    BITMAP_GROUPS_L1(nbits) + BITMAP_GROUPS_L0(nbits)},	\
+		{BITMAP_GROUPS_L4(nbits) + BITMAP_GROUPS_L3(nbits) +	\
+		     BITMAP_GROUPS_L2(nbits) + BITMAP_GROUPS_L1(nbits)	\
+		     + BITMAP_GROUPS_L0(nbits)}				\
+	}								\
+}
+
+#else /* BITMAP_USE_TREE */
+
+#define BITMAP_GROUPS(nbits)	BITMAP_BITS2GROUPS(nbits)
+#define BITMAP_GROUPS_MAX	BITMAP_BITS2GROUPS(BITMAP_MAXBITS)
+
+#define BITMAP_INFO_INITIALIZER(nbits) {				\
+	/* nbits. */							\
+	nbits,								\
+	/* ngroups. */							\
+	BITMAP_BITS2GROUPS(nbits)					\
+}
+
+#endif /* BITMAP_USE_TREE */
+
+typedef struct bitmap_level_s {
+	/* Offset of this level's groups within the array of groups. */
+	size_t group_offset;
+} bitmap_level_t;
+
+typedef struct bitmap_info_s {
+	/* Logical number of bits in bitmap (stored at bottom level). */
+	size_t nbits;
+
+#ifdef BITMAP_USE_TREE
+	/* Number of levels necessary for nbits. */
+	unsigned nlevels;
+
+	/*
+	 * Only the first (nlevels+1) elements are used, and levels are ordered
+	 * bottom to top (e.g. the bottom level is stored in levels[0]).
+	 */
+	bitmap_level_t levels[BITMAP_MAX_LEVELS+1];
+#else /* BITMAP_USE_TREE */
+	/* Number of groups necessary for nbits. */
+	size_t ngroups;
+#endif /* BITMAP_USE_TREE */
+} bitmap_info_t;
+
+void bitmap_info_init(bitmap_info_t *binfo, size_t nbits);
+void bitmap_init(bitmap_t *bitmap, const bitmap_info_t *binfo, bool fill);
+size_t bitmap_size(const bitmap_info_t *binfo);
+
+static inline bool
+bitmap_full(bitmap_t *bitmap, const bitmap_info_t *binfo) {
+#ifdef BITMAP_USE_TREE
+	size_t rgoff = binfo->levels[binfo->nlevels].group_offset - 1;
+	bitmap_t rg = bitmap[rgoff];
+	/* The bitmap is full iff the root group is 0. */
+	return (rg == 0);
+#else
+	size_t i;
+
+	for (i = 0; i < binfo->ngroups; i++) {
+		if (bitmap[i] != 0) {
+			return false;
+		}
+	}
+	return true;
+#endif
+}
+
+static inline bool
+bitmap_get(bitmap_t *bitmap, const bitmap_info_t *binfo, size_t bit) {
+	size_t goff;
+	bitmap_t g;
+
+	assert(bit < binfo->nbits);
+	goff = bit >> LG_BITMAP_GROUP_NBITS;
+	g = bitmap[goff];
+	return !(g & (ZU(1) << (bit & BITMAP_GROUP_NBITS_MASK)));
+}
+
+static inline void
+bitmap_set(bitmap_t *bitmap, const bitmap_info_t *binfo, size_t bit) {
+	size_t goff;
+	bitmap_t *gp;
+	bitmap_t g;
+
+	assert(bit < binfo->nbits);
+	assert(!bitmap_get(bitmap, binfo, bit));
+	goff = bit >> LG_BITMAP_GROUP_NBITS;
+	gp = &bitmap[goff];
+	g = *gp;
+	assert(g & (ZU(1) << (bit & BITMAP_GROUP_NBITS_MASK)));
+	g ^= ZU(1) << (bit & BITMAP_GROUP_NBITS_MASK);
+	*gp = g;
+	assert(bitmap_get(bitmap, binfo, bit));
+#ifdef BITMAP_USE_TREE
+	/* Propagate group state transitions up the tree. */
+	if (g == 0) {
+		unsigned i;
+		for (i = 1; i < binfo->nlevels; i++) {
+			bit = goff;
+			goff = bit >> LG_BITMAP_GROUP_NBITS;
+			gp = &bitmap[binfo->levels[i].group_offset + goff];
+			g = *gp;
+			assert(g & (ZU(1) << (bit & BITMAP_GROUP_NBITS_MASK)));
+			g ^= ZU(1) << (bit & BITMAP_GROUP_NBITS_MASK);
+			*gp = g;
+			if (g != 0) {
+				break;
+			}
+		}
+	}
+#endif
+}
+
+/* ffu: find first unset >= bit. */
+static inline size_t
+bitmap_ffu(const bitmap_t *bitmap, const bitmap_info_t *binfo, size_t min_bit) {
+	assert(min_bit < binfo->nbits);
+
+#ifdef BITMAP_USE_TREE
+	size_t bit = 0;
+	for (unsigned level = binfo->nlevels; level--;) {
+		size_t lg_bits_per_group = (LG_BITMAP_GROUP_NBITS * (level +
+		    1));
+		bitmap_t group = bitmap[binfo->levels[level].group_offset + (bit
+		    >> lg_bits_per_group)];
+		unsigned group_nmask = (unsigned)(((min_bit > bit) ? (min_bit -
+		    bit) : 0) >> (lg_bits_per_group - LG_BITMAP_GROUP_NBITS));
+		assert(group_nmask <= BITMAP_GROUP_NBITS);
+		bitmap_t group_mask = ~((1LU << group_nmask) - 1);
+		bitmap_t group_masked = group & group_mask;
+		if (group_masked == 0LU) {
+			if (group == 0LU) {
+				return binfo->nbits;
+			}
+			/*
+			 * min_bit was preceded by one or more unset bits in
+			 * this group, but there are no other unset bits in this
+			 * group.  Try again starting at the first bit of the
+			 * next sibling.  This will recurse at most once per
+			 * non-root level.
+			 */
+			size_t sib_base = bit + (ZU(1) << lg_bits_per_group);
+			assert(sib_base > min_bit);
+			assert(sib_base > bit);
+			if (sib_base >= binfo->nbits) {
+				return binfo->nbits;
+			}
+			return bitmap_ffu(bitmap, binfo, sib_base);
+		}
+		bit += ((size_t)ffs_lu(group_masked)) <<
+		    (lg_bits_per_group - LG_BITMAP_GROUP_NBITS);
+	}
+	assert(bit >= min_bit);
+	assert(bit < binfo->nbits);
+	return bit;
+#else
+	size_t i = min_bit >> LG_BITMAP_GROUP_NBITS;
+	bitmap_t g = bitmap[i] & ~((1LU << (min_bit & BITMAP_GROUP_NBITS_MASK))
+	    - 1);
+	size_t bit;
+	do {
+		if (g != 0) {
+			bit = ffs_lu(g);
+			return (i << LG_BITMAP_GROUP_NBITS) + bit;
+		}
+		i++;
+		g = bitmap[i];
+	} while (i < binfo->ngroups);
+	return binfo->nbits;
+#endif
+}
+
+/* sfu: set first unset. */
+static inline size_t
+bitmap_sfu(bitmap_t *bitmap, const bitmap_info_t *binfo) {
+	size_t bit;
+	bitmap_t g;
+	unsigned i;
+
+	assert(!bitmap_full(bitmap, binfo));
+
+#ifdef BITMAP_USE_TREE
+	i = binfo->nlevels - 1;
+	g = bitmap[binfo->levels[i].group_offset];
+	bit = ffs_lu(g);
+	while (i > 0) {
+		i--;
+		g = bitmap[binfo->levels[i].group_offset + bit];
+		bit = (bit << LG_BITMAP_GROUP_NBITS) + ffs_lu(g);
+	}
+#else
+	i = 0;
+	g = bitmap[0];
+	while (g == 0) {
+		i++;
+		g = bitmap[i];
+	}
+	bit = (i << LG_BITMAP_GROUP_NBITS) + ffs_lu(g);
+#endif
+	bitmap_set(bitmap, binfo, bit);
+	return bit;
+}
+
+static inline void
+bitmap_unset(bitmap_t *bitmap, const bitmap_info_t *binfo, size_t bit) {
+	size_t goff;
+	bitmap_t *gp;
+	bitmap_t g;
+	UNUSED bool propagate;
+
+	assert(bit < binfo->nbits);
+	assert(bitmap_get(bitmap, binfo, bit));
+	goff = bit >> LG_BITMAP_GROUP_NBITS;
+	gp = &bitmap[goff];
+	g = *gp;
+	propagate = (g == 0);
+	assert((g & (ZU(1) << (bit & BITMAP_GROUP_NBITS_MASK))) == 0);
+	g ^= ZU(1) << (bit & BITMAP_GROUP_NBITS_MASK);
+	*gp = g;
+	assert(!bitmap_get(bitmap, binfo, bit));
+#ifdef BITMAP_USE_TREE
+	/* Propagate group state transitions up the tree. */
+	if (propagate) {
+		unsigned i;
+		for (i = 1; i < binfo->nlevels; i++) {
+			bit = goff;
+			goff = bit >> LG_BITMAP_GROUP_NBITS;
+			gp = &bitmap[binfo->levels[i].group_offset + goff];
+			g = *gp;
+			propagate = (g == 0);
+			assert((g & (ZU(1) << (bit & BITMAP_GROUP_NBITS_MASK)))
+			    == 0);
+			g ^= ZU(1) << (bit & BITMAP_GROUP_NBITS_MASK);
+			*gp = g;
+			if (!propagate) {
+				break;
+			}
+		}
+	}
+#endif /* BITMAP_USE_TREE */
+}
+
+#endif /* JEMALLOC_INTERNAL_BITMAP_H */
diff --git a/deps/jemalloc/include/jemalloc/internal/buf_writer.h b/deps/jemalloc/include/jemalloc/internal/buf_writer.h
new file mode 100644
index 0000000..37aa6de
--- /dev/null
+++ b/deps/jemalloc/include/jemalloc/internal/buf_writer.h
@@ -0,0 +1,32 @@
+#ifndef JEMALLOC_INTERNAL_BUF_WRITER_H
+#define JEMALLOC_INTERNAL_BUF_WRITER_H
+
+/*
+ * Note: when using the buffered writer, cbopaque is passed to write_cb only
+ * when the buffer is flushed.  It would make a difference if cbopaque points
+ * to something that's changing for each write_cb call, or something that
+ * affects write_cb in a way dependent on the content of the output string.
+ * However, the most typical usage case in practice is that cbopaque points to
+ * some "option like" content for the write_cb, so it doesn't matter.
+ */
+
+typedef struct {
+	write_cb_t *write_cb;
+	void *cbopaque;
+	char *buf;
+	size_t buf_size;
+	size_t buf_end;
+	bool internal_buf;
+} buf_writer_t;
+
+bool buf_writer_init(tsdn_t *tsdn, buf_writer_t *buf_writer,
+    write_cb_t *write_cb, void *cbopaque, char *buf, size_t buf_len);
+void buf_writer_flush(buf_writer_t *buf_writer);
+write_cb_t buf_writer_cb;
+void buf_writer_terminate(tsdn_t *tsdn, buf_writer_t *buf_writer);
+
+typedef ssize_t (read_cb_t)(void *read_cbopaque, void *buf, size_t limit);
+void buf_writer_pipe(buf_writer_t *buf_writer, read_cb_t *read_cb,
+    void *read_cbopaque);
+
+#endif /* JEMALLOC_INTERNAL_BUF_WRITER_H */
diff --git a/deps/jemalloc/include/jemalloc/internal/cache_bin.h b/deps/jemalloc/include/jemalloc/internal/cache_bin.h
new file mode 100644
index 0000000..caf5be3
--- /dev/null
+++ b/deps/jemalloc/include/jemalloc/internal/cache_bin.h
@@ -0,0 +1,670 @@
+#ifndef JEMALLOC_INTERNAL_CACHE_BIN_H
+#define JEMALLOC_INTERNAL_CACHE_BIN_H
+
+#include "jemalloc/internal/ql.h"
+#include "jemalloc/internal/sz.h"
+
+/*
+ * The cache_bins are the mechanism that the tcache and the arena use to
+ * communicate.  The tcache fills from and flushes to the arena by passing a
+ * cache_bin_t to fill/flush.  When the arena needs to pull stats from the
+ * tcaches associated with it, it does so by iterating over its
+ * cache_bin_array_descriptor_t objects and reading out per-bin stats it
+ * contains.  This makes it so that the arena need not know about the existence
+ * of the tcache at all.
+ */
+
+/*
+ * The size in bytes of each cache bin stack.  We also use this to indicate
+ * *counts* of individual objects.
+ */
+typedef uint16_t cache_bin_sz_t;
+
+/*
+ * Leave a noticeable mark pattern on the cache bin stack boundaries, in case a
+ * bug starts leaking those.  Make it look like the junk pattern but be distinct
+ * from it.
+ */
+static const uintptr_t cache_bin_preceding_junk =
+    (uintptr_t)0x7a7a7a7a7a7a7a7aULL;
+/* Note: a7 vs. 7a above -- this tells you which pointer leaked. */
+static const uintptr_t cache_bin_trailing_junk =
+    (uintptr_t)0xa7a7a7a7a7a7a7a7ULL;
+
+/*
+ * That implies the following value, for the maximum number of items in any
+ * individual bin.  The cache bins track their bounds looking just at the low
+ * bits of a pointer, compared against a cache_bin_sz_t.  So that's
+ *   1 << (sizeof(cache_bin_sz_t) * 8)
+ * bytes spread across pointer sized objects to get the maximum.
+ */
+#define CACHE_BIN_NCACHED_MAX (((size_t)1 << sizeof(cache_bin_sz_t) * 8) \
+    / sizeof(void *) - 1)
+
+/*
+ * This lives inside the cache_bin (for locality reasons), and is initialized
+ * alongside it, but is otherwise not modified by any cache bin operations.
+ * It's logically public and maintained by its callers.
+ */
+typedef struct cache_bin_stats_s cache_bin_stats_t;
+struct cache_bin_stats_s {
+	/*
+	 * Number of allocation requests that corresponded to the size of this
+	 * bin.
+	 */
+	uint64_t nrequests;
+};
+
+/*
+ * Read-only information associated with each element of tcache_t's tbins array
+ * is stored separately, mainly to reduce memory usage.
+ */
+typedef struct cache_bin_info_s cache_bin_info_t;
+struct cache_bin_info_s {
+	cache_bin_sz_t ncached_max;
+};
+
+/*
+ * Responsible for caching allocations associated with a single size.
+ *
+ * Several pointers are used to track the stack.  To save on metadata bytes,
+ * only the stack_head is a full sized pointer (which is dereferenced on the
+ * fastpath), while the others store only the low 16 bits -- this is correct
+ * because a single stack never takes more space than 2^16 bytes, and at the
+ * same time only equality checks are performed on the low bits.
+ *
+ * (low addr)                                                  (high addr)
+ * |------stashed------|------available------|------cached-----|
+ * ^                   ^                     ^                 ^
+ * low_bound(derived)  low_bits_full         stack_head        low_bits_empty
+ */
+typedef struct cache_bin_s cache_bin_t;
+struct cache_bin_s {
+	/*
+	 * The stack grows down.  Whenever the bin is nonempty, the head points
+	 * to an array entry containing a valid allocation.  When it is empty,
+	 * the head points to one element past the owned array.
+	 */
+	void **stack_head;
+	/*
+	 * cur_ptr and stats are both modified frequently.  Let's keep them
+	 * close so that they have a higher chance of being on the same
+	 * cacheline, thus less write-backs.
+	 */
+	cache_bin_stats_t tstats;
+
+	/*
+	 * The low bits of the address of the first item in the stack that
+	 * hasn't been used since the last GC, to track the low water mark (min
+	 * # of cached items).
+	 *
+	 * Since the stack grows down, this is a higher address than
+	 * low_bits_full.
+	 */
+	uint16_t low_bits_low_water;
+
+	/*
+	 * The low bits of the value that stack_head will take on when the array
+	 * is full (of cached & stashed items).  But remember that stack_head
+	 * always points to a valid item when the array is nonempty -- this is
+	 * in the array.
+	 *
+	 * Recall that since the stack grows down, this is the lowest available
+	 * address in the array for caching.  Only adjusted when stashing items.
+	 */
+	uint16_t low_bits_full;
+
+	/*
+	 * The low bits of the value that stack_head will take on when the array
+	 * is empty.
+	 *
+	 * The stack grows down -- this is one past the highest address in the
+	 * array.  Immutable after initialization.
+	 */
+	uint16_t low_bits_empty;
+};
+
+/*
+ * The cache_bins live inside the tcache, but the arena (by design) isn't
+ * supposed to know much about tcache internals.  To let the arena iterate over
+ * associated bins, we keep (with the tcache) a linked list of
+ * cache_bin_array_descriptor_ts that tell the arena how to find the bins.
+ */
+typedef struct cache_bin_array_descriptor_s cache_bin_array_descriptor_t;
+struct cache_bin_array_descriptor_s {
+	/*
+	 * The arena keeps a list of the cache bins associated with it, for
+	 * stats collection.
+	 */
+	ql_elm(cache_bin_array_descriptor_t) link;
+	/* Pointers to the tcache bins. */
+	cache_bin_t *bins;
+};
+
+static inline void
+cache_bin_array_descriptor_init(cache_bin_array_descriptor_t *descriptor,
+    cache_bin_t *bins) {
+	ql_elm_new(descriptor, link);
+	descriptor->bins = bins;
+}
+
+JEMALLOC_ALWAYS_INLINE bool
+cache_bin_nonfast_aligned(const void *ptr) {
+	if (!config_uaf_detection) {
+		return false;
+	}
+	/*
+	 * Currently we use alignment to decide which pointer to junk & stash on
+	 * dealloc (for catching use-after-free).  In some common cases a
+	 * page-aligned check is needed already (sdalloc w/ config_prof), so we
+	 * are getting it more or less for free -- no added instructions on
+	 * free_fastpath.
+	 *
+	 * Another way of deciding which pointer to sample, is adding another
+	 * thread_event to pick one every N bytes.  That also adds no cost on
+	 * the fastpath, however it will tend to pick large allocations which is
+	 * not the desired behavior.
+	 */
+	return ((uintptr_t)ptr & san_cache_bin_nonfast_mask) == 0;
+}
+
+/* Returns ncached_max: Upper limit on ncached. */
+static inline cache_bin_sz_t
+cache_bin_info_ncached_max(cache_bin_info_t *info) {
+	return info->ncached_max;
+}
+
+/*
+ * Internal.
+ *
+ * Asserts that the pointer associated with earlier is <= the one associated
+ * with later.
+ */
+static inline void
+cache_bin_assert_earlier(cache_bin_t *bin, uint16_t earlier, uint16_t later) {
+	if (earlier > later) {
+		assert(bin->low_bits_full > bin->low_bits_empty);
+	}
+}
+
+/*
+ * Internal.
+ *
+ * Does difference calculations that handle wraparound correctly.  Earlier must
+ * be associated with the position earlier in memory.
+ */
+static inline uint16_t
+cache_bin_diff(cache_bin_t *bin, uint16_t earlier, uint16_t later, bool racy) {
+	/*
+	 * When it's racy, bin->low_bits_full can be modified concurrently. It
+	 * can cross the uint16_t max value and become less than
+	 * bin->low_bits_empty at the time of the check.
+	 */
+	if (!racy) {
+		cache_bin_assert_earlier(bin, earlier, later);
+	}
+	return later - earlier;
+}
+
+/*
+ * Number of items currently cached in the bin, without checking ncached_max.
+ * We require specifying whether or not the request is racy or not (i.e. whether
+ * or not concurrent modifications are possible).
+ */
+static inline cache_bin_sz_t
+cache_bin_ncached_get_internal(cache_bin_t *bin, bool racy) {
+	cache_bin_sz_t diff = cache_bin_diff(bin,
+	    (uint16_t)(uintptr_t)bin->stack_head, bin->low_bits_empty, racy);
+	cache_bin_sz_t n = diff / sizeof(void *);
+	/*
+	 * We have undefined behavior here; if this function is called from the
+	 * arena stats updating code, then stack_head could change from the
+	 * first line to the next one.  Morally, these loads should be atomic,
+	 * but compilers won't currently generate comparisons with in-memory
+	 * operands against atomics, and these variables get accessed on the
+	 * fast paths.  This should still be "safe" in the sense of generating
+	 * the correct assembly for the foreseeable future, though.
+	 */
+	assert(n == 0 || *(bin->stack_head) != NULL || racy);
+	return n;
+}
+
+/*
+ * Number of items currently cached in the bin, with checking ncached_max.  The
+ * caller must know that no concurrent modification of the cache_bin is
+ * possible.
+ */
+static inline cache_bin_sz_t
+cache_bin_ncached_get_local(cache_bin_t *bin, cache_bin_info_t *info) {
+	cache_bin_sz_t n = cache_bin_ncached_get_internal(bin,
+	    /* racy */ false);
+	assert(n <= cache_bin_info_ncached_max(info));
+	return n;
+}
+
+/*
+ * Internal.
+ *
+ * A pointer to the position one past the end of the backing array.
+ *
+ * Do not call if racy, because both 'bin->stack_head' and 'bin->low_bits_full'
+ * are subject to concurrent modifications.
+ */
+static inline void **
+cache_bin_empty_position_get(cache_bin_t *bin) {
+	cache_bin_sz_t diff = cache_bin_diff(bin,
+	    (uint16_t)(uintptr_t)bin->stack_head, bin->low_bits_empty,
+	    /* racy */ false);
+	uintptr_t empty_bits = (uintptr_t)bin->stack_head + diff;
+	void **ret = (void **)empty_bits;
+
+	assert(ret >= bin->stack_head);
+
+	return ret;
+}
+
+/*
+ * Internal.
+ *
+ * Calculates low bits of the lower bound of the usable cache bin's range (see
+ * cache_bin_t visual representation above).
+ *
+ * No values are concurrently modified, so should be safe to read in a
+ * multithreaded environment. Currently concurrent access happens only during
+ * arena statistics collection.
+ */
+static inline uint16_t
+cache_bin_low_bits_low_bound_get(cache_bin_t *bin, cache_bin_info_t *info) {
+	return (uint16_t)bin->low_bits_empty -
+	    info->ncached_max * sizeof(void *);
+}
+
+/*
+ * Internal.
+ *
+ * A pointer to the position with the lowest address of the backing array.
+ */
+static inline void **
+cache_bin_low_bound_get(cache_bin_t *bin, cache_bin_info_t *info) {
+	cache_bin_sz_t ncached_max = cache_bin_info_ncached_max(info);
+	void **ret = cache_bin_empty_position_get(bin) - ncached_max;
+	assert(ret <= bin->stack_head);
+
+	return ret;
+}
+
+/*
+ * As the name implies.  This is important since it's not correct to try to
+ * batch fill a nonempty cache bin.
+ */
+static inline void
+cache_bin_assert_empty(cache_bin_t *bin, cache_bin_info_t *info) {
+	assert(cache_bin_ncached_get_local(bin, info) == 0);
+	assert(cache_bin_empty_position_get(bin) == bin->stack_head);
+}
+
+/*
+ * Get low water, but without any of the correctness checking we do for the
+ * caller-usable version, if we are temporarily breaking invariants (like
+ * ncached >= low_water during flush).
+ */
+static inline cache_bin_sz_t
+cache_bin_low_water_get_internal(cache_bin_t *bin) {
+	return cache_bin_diff(bin, bin->low_bits_low_water,
+	    bin->low_bits_empty, /* racy */ false) / sizeof(void *);
+}
+
+/* Returns the numeric value of low water in [0, ncached]. */
+static inline cache_bin_sz_t
+cache_bin_low_water_get(cache_bin_t *bin, cache_bin_info_t *info) {
+	cache_bin_sz_t low_water = cache_bin_low_water_get_internal(bin);
+	assert(low_water <= cache_bin_info_ncached_max(info));
+	assert(low_water <= cache_bin_ncached_get_local(bin, info));
+
+	cache_bin_assert_earlier(bin, (uint16_t)(uintptr_t)bin->stack_head,
+	    bin->low_bits_low_water);
+
+	return low_water;
+}
+
+/*
+ * Indicates that the current cache bin position should be the low water mark
+ * going forward.
+ */
+static inline void
+cache_bin_low_water_set(cache_bin_t *bin) {
+	bin->low_bits_low_water = (uint16_t)(uintptr_t)bin->stack_head;
+}
+
+static inline void
+cache_bin_low_water_adjust(cache_bin_t *bin) {
+	if (cache_bin_ncached_get_internal(bin, /* racy */ false)
+	    < cache_bin_low_water_get_internal(bin)) {
+		cache_bin_low_water_set(bin);
+	}
+}
+
+JEMALLOC_ALWAYS_INLINE void *
+cache_bin_alloc_impl(cache_bin_t *bin, bool *success, bool adjust_low_water) {
+	/*
+	 * success (instead of ret) should be checked upon the return of this
+	 * function.  We avoid checking (ret == NULL) because there is never a
+	 * null stored on the avail stack (which is unknown to the compiler),
+	 * and eagerly checking ret would cause pipeline stall (waiting for the
+	 * cacheline).
+	 */
+
+	/*
+	 * This may read from the empty position; however the loaded value won't
+	 * be used.  It's safe because the stack has one more slot reserved.
+	 */
+	void *ret = *bin->stack_head;
+	uint16_t low_bits = (uint16_t)(uintptr_t)bin->stack_head;
+	void **new_head = bin->stack_head + 1;
+
+	/*
+	 * Note that the low water mark is at most empty; if we pass this check,
+	 * we know we're non-empty.
+	 */
+	if (likely(low_bits != bin->low_bits_low_water)) {
+		bin->stack_head = new_head;
+		*success = true;
+		return ret;
+	}
+	if (!adjust_low_water) {
+		*success = false;
+		return NULL;
+	}
+	/*
+	 * In the fast-path case where we call alloc_easy and then alloc, the
+	 * previous checking and computation is optimized away -- we didn't
+	 * actually commit any of our operations.
+	 */
+	if (likely(low_bits != bin->low_bits_empty)) {
+		bin->stack_head = new_head;
+		bin->low_bits_low_water = (uint16_t)(uintptr_t)new_head;
+		*success = true;
+		return ret;
+	}
+	*success = false;
+	return NULL;
+}
+
+/*
+ * Allocate an item out of the bin, failing if we're at the low-water mark.
+ */
+JEMALLOC_ALWAYS_INLINE void *
+cache_bin_alloc_easy(cache_bin_t *bin, bool *success) {
+	/* We don't look at info if we're not adjusting low-water. */
+	return cache_bin_alloc_impl(bin, success, false);
+}
+
+/*
+ * Allocate an item out of the bin, even if we're currently at the low-water
+ * mark (and failing only if the bin is empty).
+ */
+JEMALLOC_ALWAYS_INLINE void *
+cache_bin_alloc(cache_bin_t *bin, bool *success) {
+	return cache_bin_alloc_impl(bin, success, true);
+}
+
+JEMALLOC_ALWAYS_INLINE cache_bin_sz_t
+cache_bin_alloc_batch(cache_bin_t *bin, size_t num, void **out) {
+	cache_bin_sz_t n = cache_bin_ncached_get_internal(bin,
+	    /* racy */ false);
+	if (n > num) {
+		n = (cache_bin_sz_t)num;
+	}
+	memcpy(out, bin->stack_head, n * sizeof(void *));
+	bin->stack_head += n;
+	cache_bin_low_water_adjust(bin);
+
+	return n;
+}
+
+JEMALLOC_ALWAYS_INLINE bool
+cache_bin_full(cache_bin_t *bin) {
+	return ((uint16_t)(uintptr_t)bin->stack_head == bin->low_bits_full);
+}
+
+/*
+ * Free an object into the given bin.  Fails only if the bin is full.
+ */
+JEMALLOC_ALWAYS_INLINE bool
+cache_bin_dalloc_easy(cache_bin_t *bin, void *ptr) {
+	if (unlikely(cache_bin_full(bin))) {
+		return false;
+	}
+
+	bin->stack_head--;
+	*bin->stack_head = ptr;
+	cache_bin_assert_earlier(bin, bin->low_bits_full,
+	    (uint16_t)(uintptr_t)bin->stack_head);
+
+	return true;
+}
+
+/* Returns false if failed to stash (i.e. bin is full). */
+JEMALLOC_ALWAYS_INLINE bool
+cache_bin_stash(cache_bin_t *bin, void *ptr) {
+	if (cache_bin_full(bin)) {
+		return false;
+	}
+
+	/* Stash at the full position, in the [full, head) range. */
+	uint16_t low_bits_head = (uint16_t)(uintptr_t)bin->stack_head;
+	/* Wraparound handled as well. */
+	uint16_t diff = cache_bin_diff(bin, bin->low_bits_full, low_bits_head,
+	    /* racy */ false);
+	*(void **)((uintptr_t)bin->stack_head - diff) = ptr;
+
+	assert(!cache_bin_full(bin));
+	bin->low_bits_full += sizeof(void *);
+	cache_bin_assert_earlier(bin, bin->low_bits_full, low_bits_head);
+
+	return true;
+}
+
+/*
+ * Get the number of stashed pointers.
+ *
+ * When called from a thread not owning the TLS (i.e. racy = true), it's
+ * important to keep in mind that 'bin->stack_head' and 'bin->low_bits_full' can
+ * be modified concurrently and almost none assertions about their values can be
+ * made.
+ */
+JEMALLOC_ALWAYS_INLINE cache_bin_sz_t
+cache_bin_nstashed_get_internal(cache_bin_t *bin, cache_bin_info_t *info,
+    bool racy) {
+	cache_bin_sz_t ncached_max = cache_bin_info_ncached_max(info);
+	uint16_t low_bits_low_bound = cache_bin_low_bits_low_bound_get(bin,
+	    info);
+
+	cache_bin_sz_t n = cache_bin_diff(bin, low_bits_low_bound,
+	    bin->low_bits_full, racy) / sizeof(void *);
+	assert(n <= ncached_max);
+
+	if (!racy) {
+		/* Below are for assertions only. */
+		void **low_bound = cache_bin_low_bound_get(bin, info);
+
+		assert((uint16_t)(uintptr_t)low_bound == low_bits_low_bound);
+		void *stashed = *(low_bound + n - 1);
+		bool aligned = cache_bin_nonfast_aligned(stashed);
+#ifdef JEMALLOC_JET
+		/* Allow arbitrary pointers to be stashed in tests. */
+		aligned = true;
+#endif
+		assert(n == 0 || (stashed != NULL && aligned));
+	}
+
+	return n;
+}
+
+JEMALLOC_ALWAYS_INLINE cache_bin_sz_t
+cache_bin_nstashed_get_local(cache_bin_t *bin, cache_bin_info_t *info) {
+	cache_bin_sz_t n = cache_bin_nstashed_get_internal(bin, info,
+	    /* racy */ false);
+	assert(n <= cache_bin_info_ncached_max(info));
+	return n;
+}
+
+/*
+ * Obtain a racy view of the number of items currently in the cache bin, in the
+ * presence of possible concurrent modifications.
+ */
+static inline void
+cache_bin_nitems_get_remote(cache_bin_t *bin, cache_bin_info_t *info,
+    cache_bin_sz_t *ncached, cache_bin_sz_t *nstashed) {
+	cache_bin_sz_t n = cache_bin_ncached_get_internal(bin, /* racy */ true);
+	assert(n <= cache_bin_info_ncached_max(info));
+	*ncached = n;
+
+	n = cache_bin_nstashed_get_internal(bin, info, /* racy */ true);
+	assert(n <= cache_bin_info_ncached_max(info));
+	*nstashed = n;
+	/* Note that cannot assert ncached + nstashed <= ncached_max (racy). */
+}
+
+/*
+ * Filling and flushing are done in batch, on arrays of void *s.  For filling,
+ * the arrays go forward, and can be accessed with ordinary array arithmetic.
+ * For flushing, we work from the end backwards, and so need to use special
+ * accessors that invert the usual ordering.
+ *
+ * This is important for maintaining first-fit; the arena code fills with
+ * earliest objects first, and so those are the ones we should return first for
+ * cache_bin_alloc calls.  When flushing, we should flush the objects that we
+ * wish to return later; those at the end of the array.  This is better for the
+ * first-fit heuristic as well as for cache locality; the most recently freed
+ * objects are the ones most likely to still be in cache.
+ *
+ * This all sounds very hand-wavey and theoretical, but reverting the ordering
+ * on one or the other pathway leads to measurable slowdowns.
+ */
+
+typedef struct cache_bin_ptr_array_s cache_bin_ptr_array_t;
+struct cache_bin_ptr_array_s {
+	cache_bin_sz_t n;
+	void **ptr;
+};
+
+/*
+ * Declare a cache_bin_ptr_array_t sufficient for nval items.
+ *
+ * In the current implementation, this could be just part of a
+ * cache_bin_ptr_array_init_... call, since we reuse the cache bin stack memory.
+ * Indirecting behind a macro, though, means experimenting with linked-list
+ * representations is easy (since they'll require an alloca in the calling
+ * frame).
+ */
+#define CACHE_BIN_PTR_ARRAY_DECLARE(name, nval)				\
+    cache_bin_ptr_array_t name;						\
+    name.n = (nval)
+
+/*
+ * Start a fill.  The bin must be empty, and This must be followed by a
+ * finish_fill call before doing any alloc/dalloc operations on the bin.
+ */
+static inline void
+cache_bin_init_ptr_array_for_fill(cache_bin_t *bin, cache_bin_info_t *info,
+    cache_bin_ptr_array_t *arr, cache_bin_sz_t nfill) {
+	cache_bin_assert_empty(bin, info);
+	arr->ptr = cache_bin_empty_position_get(bin) - nfill;
+}
+
+/*
+ * While nfill in cache_bin_init_ptr_array_for_fill is the number we *intend* to
+ * fill, nfilled here is the number we actually filled (which may be less, in
+ * case of OOM.
+ */
+static inline void
+cache_bin_finish_fill(cache_bin_t *bin, cache_bin_info_t *info,
+    cache_bin_ptr_array_t *arr, cache_bin_sz_t nfilled) {
+	cache_bin_assert_empty(bin, info);
+	void **empty_position = cache_bin_empty_position_get(bin);
+	if (nfilled < arr->n) {
+		memmove(empty_position - nfilled, empty_position - arr->n,
+		    nfilled * sizeof(void *));
+	}
+	bin->stack_head = empty_position - nfilled;
+}
+
+/*
+ * Same deal, but with flush.  Unlike fill (which can fail), the user must flush
+ * everything we give them.
+ */
+static inline void
+cache_bin_init_ptr_array_for_flush(cache_bin_t *bin, cache_bin_info_t *info,
+    cache_bin_ptr_array_t *arr, cache_bin_sz_t nflush) {
+	arr->ptr = cache_bin_empty_position_get(bin) - nflush;
+	assert(cache_bin_ncached_get_local(bin, info) == 0
+	    || *arr->ptr != NULL);
+}
+
+static inline void
+cache_bin_finish_flush(cache_bin_t *bin, cache_bin_info_t *info,
+    cache_bin_ptr_array_t *arr, cache_bin_sz_t nflushed) {
+	unsigned rem = cache_bin_ncached_get_local(bin, info) - nflushed;
+	memmove(bin->stack_head + nflushed, bin->stack_head,
+	    rem * sizeof(void *));
+	bin->stack_head = bin->stack_head + nflushed;
+	cache_bin_low_water_adjust(bin);
+}
+
+static inline void
+cache_bin_init_ptr_array_for_stashed(cache_bin_t *bin, szind_t binind,
+    cache_bin_info_t *info, cache_bin_ptr_array_t *arr,
+    cache_bin_sz_t nstashed) {
+	assert(nstashed > 0);
+	assert(cache_bin_nstashed_get_local(bin, info) == nstashed);
+
+	void **low_bound = cache_bin_low_bound_get(bin, info);
+	arr->ptr = low_bound;
+	assert(*arr->ptr != NULL);
+}
+
+static inline void
+cache_bin_finish_flush_stashed(cache_bin_t *bin, cache_bin_info_t *info) {
+	void **low_bound = cache_bin_low_bound_get(bin, info);
+
+	/* Reset the bin local full position. */
+	bin->low_bits_full = (uint16_t)(uintptr_t)low_bound;
+	assert(cache_bin_nstashed_get_local(bin, info) == 0);
+}
+
+/*
+ * Initialize a cache_bin_info to represent up to the given number of items in
+ * the cache_bins it is associated with.
+ */
+void cache_bin_info_init(cache_bin_info_t *bin_info,
+    cache_bin_sz_t ncached_max);
+/*
+ * Given an array of initialized cache_bin_info_ts, determine how big an
+ * allocation is required to initialize a full set of cache_bin_ts.
+ */
+void cache_bin_info_compute_alloc(cache_bin_info_t *infos, szind_t ninfos,
+    size_t *size, size_t *alignment);
+
+/*
+ * Actually initialize some cache bins.  Callers should allocate the backing
+ * memory indicated by a call to cache_bin_compute_alloc.  They should then
+ * preincrement, call init once for each bin and info, and then call
+ * cache_bin_postincrement.  *alloc_cur will then point immediately past the end
+ * of the allocation.
+ */
+void cache_bin_preincrement(cache_bin_info_t *infos, szind_t ninfos,
+    void *alloc, size_t *cur_offset);
+void cache_bin_postincrement(cache_bin_info_t *infos, szind_t ninfos,
+    void *alloc, size_t *cur_offset);
+void cache_bin_init(cache_bin_t *bin, cache_bin_info_t *info, void *alloc,
+    size_t *cur_offset);
+
+/*
+ * If a cache bin was zero initialized (either because it lives in static or
+ * thread-local storage, or was memset to 0), this function indicates whether or
+ * not cache_bin_init was called on it.
+ */
+bool cache_bin_still_zero_initialized(cache_bin_t *bin);
+
+#endif /* JEMALLOC_INTERNAL_CACHE_BIN_H */
diff --git a/deps/jemalloc/include/jemalloc/internal/ckh.h b/deps/jemalloc/include/jemalloc/internal/ckh.h
new file mode 100644
index 0000000..7b3850b
--- /dev/null
+++ b/deps/jemalloc/include/jemalloc/internal/ckh.h
@@ -0,0 +1,101 @@
+#ifndef JEMALLOC_INTERNAL_CKH_H
+#define JEMALLOC_INTERNAL_CKH_H
+
+#include "jemalloc/internal/tsd.h"
+
+/* Cuckoo hashing implementation.  Skip to the end for the interface. */
+
+/******************************************************************************/
+/* INTERNAL DEFINITIONS -- IGNORE */
+/******************************************************************************/
+
+/* Maintain counters used to get an idea of performance. */
+/* #define CKH_COUNT */
+/* Print counter values in ckh_delete() (requires CKH_COUNT). */
+/* #define CKH_VERBOSE */
+
+/*
+ * There are 2^LG_CKH_BUCKET_CELLS cells in each hash table bucket.  Try to fit
+ * one bucket per L1 cache line.
+ */
+#define LG_CKH_BUCKET_CELLS (LG_CACHELINE - LG_SIZEOF_PTR - 1)
+
+/* Typedefs to allow easy function pointer passing. */
+typedef void ckh_hash_t (const void *, size_t[2]);
+typedef bool ckh_keycomp_t (const void *, const void *);
+
+/* Hash table cell. */
+typedef struct {
+	const void *key;
+	const void *data;
+} ckhc_t;
+
+/* The hash table itself. */
+typedef struct {
+#ifdef CKH_COUNT
+	/* Counters used to get an idea of performance. */
+	uint64_t ngrows;
+	uint64_t nshrinks;
+	uint64_t nshrinkfails;
+	uint64_t ninserts;
+	uint64_t nrelocs;
+#endif
+
+	/* Used for pseudo-random number generation. */
+	uint64_t prng_state;
+
+	/* Total number of items. */
+	size_t count;
+
+	/*
+	 * Minimum and current number of hash table buckets.  There are
+	 * 2^LG_CKH_BUCKET_CELLS cells per bucket.
+	 */
+	unsigned lg_minbuckets;
+	unsigned lg_curbuckets;
+
+	/* Hash and comparison functions. */
+	ckh_hash_t *hash;
+	ckh_keycomp_t *keycomp;
+
+	/* Hash table with 2^lg_curbuckets buckets. */
+	ckhc_t *tab;
+} ckh_t;
+
+/******************************************************************************/
+/* BEGIN PUBLIC API */
+/******************************************************************************/
+
+/* Lifetime management.  Minitems is the initial capacity. */
+bool ckh_new(tsd_t *tsd, ckh_t *ckh, size_t minitems, ckh_hash_t *hash,
+    ckh_keycomp_t *keycomp);
+void ckh_delete(tsd_t *tsd, ckh_t *ckh);
+
+/* Get the number of elements in the set. */
+size_t ckh_count(ckh_t *ckh);
+
+/*
+ * To iterate over the elements in the table, initialize *tabind to 0 and call
+ * this function until it returns true.  Each call that returns false will
+ * update *key and *data to the next element in the table, assuming the pointers
+ * are non-NULL.
+ */
+bool ckh_iter(ckh_t *ckh, size_t *tabind, void **key, void **data);
+
+/*
+ * Basic hash table operations -- insert, removal, lookup.  For ckh_remove and
+ * ckh_search, key or data can be NULL.  The hash-table only stores pointers to
+ * the key and value, and doesn't do any lifetime management.
+ */
+bool ckh_insert(tsd_t *tsd, ckh_t *ckh, const void *key, const void *data);
+bool ckh_remove(tsd_t *tsd, ckh_t *ckh, const void *searchkey, void **key,
+    void **data);
+bool ckh_search(ckh_t *ckh, const void *searchkey, void **key, void **data);
+
+/* Some useful hash and comparison functions for strings and pointers. */
+void ckh_string_hash(const void *key, size_t r_hash[2]);
+bool ckh_string_keycomp(const void *k1, const void *k2);
+void ckh_pointer_hash(const void *key, size_t r_hash[2]);
+bool ckh_pointer_keycomp(const void *k1, const void *k2);
+
+#endif /* JEMALLOC_INTERNAL_CKH_H */
diff --git a/deps/jemalloc/include/jemalloc/internal/counter.h b/deps/jemalloc/include/jemalloc/internal/counter.h
new file mode 100644
index 0000000..79abf06
--- /dev/null
+++ b/deps/jemalloc/include/jemalloc/internal/counter.h
@@ -0,0 +1,34 @@
+#ifndef JEMALLOC_INTERNAL_COUNTER_H
+#define JEMALLOC_INTERNAL_COUNTER_H
+
+#include "jemalloc/internal/mutex.h"
+
+typedef struct counter_accum_s {
+	LOCKEDINT_MTX_DECLARE(mtx)
+	locked_u64_t accumbytes;
+	uint64_t interval;
+} counter_accum_t;
+
+JEMALLOC_ALWAYS_INLINE bool
+counter_accum(tsdn_t *tsdn, counter_accum_t *counter, uint64_t bytes) {
+	uint64_t interval = counter->interval;
+	assert(interval > 0);
+	LOCKEDINT_MTX_LOCK(tsdn, counter->mtx);
+	/*
+	 * If the event moves fast enough (and/or if the event handling is slow
+	 * enough), extreme overflow can cause counter trigger coalescing.
+	 * This is an intentional mechanism that avoids rate-limiting
+	 * allocation.
+	 */
+	bool overflow = locked_inc_mod_u64(tsdn, LOCKEDINT_MTX(counter->mtx),
+	    &counter->accumbytes, bytes, interval);
+	LOCKEDINT_MTX_UNLOCK(tsdn, counter->mtx);
+	return overflow;
+}
+
+bool counter_accum_init(counter_accum_t *counter, uint64_t interval);
+void counter_prefork(tsdn_t *tsdn, counter_accum_t *counter);
+void counter_postfork_parent(tsdn_t *tsdn, counter_accum_t *counter);
+void counter_postfork_child(tsdn_t *tsdn, counter_accum_t *counter);
+
+#endif /* JEMALLOC_INTERNAL_COUNTER_H */
diff --git a/deps/jemalloc/include/jemalloc/internal/ctl.h b/deps/jemalloc/include/jemalloc/internal/ctl.h
new file mode 100644
index 0000000..63d27f8
--- /dev/null
+++ b/deps/jemalloc/include/jemalloc/internal/ctl.h
@@ -0,0 +1,159 @@
+#ifndef JEMALLOC_INTERNAL_CTL_H
+#define JEMALLOC_INTERNAL_CTL_H
+
+#include "jemalloc/internal/jemalloc_internal_types.h"
+#include "jemalloc/internal/malloc_io.h"
+#include "jemalloc/internal/mutex_prof.h"
+#include "jemalloc/internal/ql.h"
+#include "jemalloc/internal/sc.h"
+#include "jemalloc/internal/stats.h"
+
+/* Maximum ctl tree depth. */
+#define CTL_MAX_DEPTH	7
+
+typedef struct ctl_node_s {
+	bool named;
+} ctl_node_t;
+
+typedef struct ctl_named_node_s {
+	ctl_node_t node;
+	const char *name;
+	/* If (nchildren == 0), this is a terminal node. */
+	size_t nchildren;
+	const ctl_node_t *children;
+	int (*ctl)(tsd_t *, const size_t *, size_t, void *, size_t *, void *,
+	    size_t);
+} ctl_named_node_t;
+
+typedef struct ctl_indexed_node_s {
+	struct ctl_node_s node;
+	const ctl_named_node_t *(*index)(tsdn_t *, const size_t *, size_t,
+	    size_t);
+} ctl_indexed_node_t;
+
+typedef struct ctl_arena_stats_s {
+	arena_stats_t astats;
+
+	/* Aggregate stats for small size classes, based on bin stats. */
+	size_t allocated_small;
+	uint64_t nmalloc_small;
+	uint64_t ndalloc_small;
+	uint64_t nrequests_small;
+	uint64_t nfills_small;
+	uint64_t nflushes_small;
+
+	bin_stats_data_t bstats[SC_NBINS];
+	arena_stats_large_t lstats[SC_NSIZES - SC_NBINS];
+	pac_estats_t estats[SC_NPSIZES];
+	hpa_shard_stats_t hpastats;
+	sec_stats_t secstats;
+} ctl_arena_stats_t;
+
+typedef struct ctl_stats_s {
+	size_t allocated;
+	size_t active;
+	size_t metadata;
+	size_t metadata_thp;
+	size_t resident;
+	size_t mapped;
+	size_t retained;
+
+	background_thread_stats_t background_thread;
+	mutex_prof_data_t mutex_prof_data[mutex_prof_num_global_mutexes];
+} ctl_stats_t;
+
+typedef struct ctl_arena_s ctl_arena_t;
+struct ctl_arena_s {
+	unsigned arena_ind;
+	bool initialized;
+	ql_elm(ctl_arena_t) destroyed_link;
+
+	/* Basic stats, supported even if !config_stats. */
+	unsigned nthreads;
+	const char *dss;
+	ssize_t dirty_decay_ms;
+	ssize_t muzzy_decay_ms;
+	size_t pactive;
+	size_t pdirty;
+	size_t pmuzzy;
+
+	/* NULL if !config_stats. */
+	ctl_arena_stats_t *astats;
+};
+
+typedef struct ctl_arenas_s {
+	uint64_t epoch;
+	unsigned narenas;
+	ql_head(ctl_arena_t) destroyed;
+
+	/*
+	 * Element 0 corresponds to merged stats for extant arenas (accessed via
+	 * MALLCTL_ARENAS_ALL), element 1 corresponds to merged stats for
+	 * destroyed arenas (accessed via MALLCTL_ARENAS_DESTROYED), and the
+	 * remaining MALLOCX_ARENA_LIMIT elements correspond to arenas.
+	 */
+	ctl_arena_t *arenas[2 + MALLOCX_ARENA_LIMIT];
+} ctl_arenas_t;
+
+int ctl_byname(tsd_t *tsd, const char *name, void *oldp, size_t *oldlenp,
+    void *newp, size_t newlen);
+int ctl_nametomib(tsd_t *tsd, const char *name, size_t *mibp, size_t *miblenp);
+int ctl_bymib(tsd_t *tsd, const size_t *mib, size_t miblen, void *oldp,
+    size_t *oldlenp, void *newp, size_t newlen);
+int ctl_mibnametomib(tsd_t *tsd, size_t *mib, size_t miblen, const char *name,
+    size_t *miblenp);
+int ctl_bymibname(tsd_t *tsd, size_t *mib, size_t miblen, const char *name,
+    size_t *miblenp, void *oldp, size_t *oldlenp, void *newp, size_t newlen);
+bool ctl_boot(void);
+void ctl_prefork(tsdn_t *tsdn);
+void ctl_postfork_parent(tsdn_t *tsdn);
+void ctl_postfork_child(tsdn_t *tsdn);
+void ctl_mtx_assert_held(tsdn_t *tsdn);
+
+#define xmallctl(name, oldp, oldlenp, newp, newlen) do {		\
+	if (je_mallctl(name, oldp, oldlenp, newp, newlen)		\
+	    != 0) {							\
+		malloc_printf(						\
+		    "<jemalloc>: Failure in xmallctl(\"%s\", ...)\n",	\
+		    name);						\
+		abort();						\
+	}								\
+} while (0)
+
+#define xmallctlnametomib(name, mibp, miblenp) do {			\
+	if (je_mallctlnametomib(name, mibp, miblenp) != 0) {		\
+		malloc_printf("<jemalloc>: Failure in "			\
+		    "xmallctlnametomib(\"%s\", ...)\n", name);		\
+		abort();						\
+	}								\
+} while (0)
+
+#define xmallctlbymib(mib, miblen, oldp, oldlenp, newp, newlen) do {	\
+	if (je_mallctlbymib(mib, miblen, oldp, oldlenp, newp,		\
+	    newlen) != 0) {						\
+		malloc_write(						\
+		    "<jemalloc>: Failure in xmallctlbymib()\n");	\
+		abort();						\
+	}								\
+} while (0)
+
+#define xmallctlmibnametomib(mib, miblen, name, miblenp) do {		\
+	if (ctl_mibnametomib(tsd_fetch(), mib, miblen, name, miblenp)	\
+	    != 0) {							\
+		malloc_write(						\
+		    "<jemalloc>: Failure in ctl_mibnametomib()\n");	\
+		abort();						\
+	}								\
+} while (0)
+
+#define xmallctlbymibname(mib, miblen, name, miblenp, oldp, oldlenp,	\
+    newp, newlen) do {							\
+	if (ctl_bymibname(tsd_fetch(), mib, miblen, name, miblenp,	\
+	    oldp, oldlenp, newp, newlen) != 0) {			\
+		malloc_write(						\
+		    "<jemalloc>: Failure in ctl_bymibname()\n");	\
+		abort();						\
+	}								\
+} while (0)
+
+#endif /* JEMALLOC_INTERNAL_CTL_H */
diff --git a/deps/jemalloc/include/jemalloc/internal/decay.h b/deps/jemalloc/include/jemalloc/internal/decay.h
new file mode 100644
index 0000000..cf6a9d2
--- /dev/null
+++ b/deps/jemalloc/include/jemalloc/internal/decay.h
@@ -0,0 +1,186 @@
+#ifndef JEMALLOC_INTERNAL_DECAY_H
+#define JEMALLOC_INTERNAL_DECAY_H
+
+#include "jemalloc/internal/smoothstep.h"
+
+#define DECAY_UNBOUNDED_TIME_TO_PURGE ((uint64_t)-1)
+
+/*
+ * The decay_t computes the number of pages we should purge at any given time.
+ * Page allocators inform a decay object when pages enter a decay-able state
+ * (i.e. dirty or muzzy), and query it to determine how many pages should be
+ * purged at any given time.
+ *
+ * This is mostly a single-threaded data structure and doesn't care about
+ * synchronization at all; it's the caller's responsibility to manage their
+ * synchronization on their own.  There are two exceptions:
+ * 1) It's OK to racily call decay_ms_read (i.e. just the simplest state query).
+ * 2) The mtx and purging fields live (and are initialized) here, but are
+ *    logically owned by the page allocator.  This is just a convenience (since
+ *    those fields would be duplicated for both the dirty and muzzy states
+ *    otherwise).
+ */
+typedef struct decay_s decay_t;
+struct decay_s {
+	/* Synchronizes all non-atomic fields. */
+	malloc_mutex_t mtx;
+	/*
+	 * True if a thread is currently purging the extents associated with
+	 * this decay structure.
+	 */
+	bool purging;
+	/*
+	 * Approximate time in milliseconds from the creation of a set of unused
+	 * dirty pages until an equivalent set of unused dirty pages is purged
+	 * and/or reused.
+	 */
+	atomic_zd_t time_ms;
+	/* time / SMOOTHSTEP_NSTEPS. */
+	nstime_t interval;
+	/*
+	 * Time at which the current decay interval logically started.  We do
+	 * not actually advance to a new epoch until sometime after it starts
+	 * because of scheduling and computation delays, and it is even possible
+	 * to completely skip epochs.  In all cases, during epoch advancement we
+	 * merge all relevant activity into the most recently recorded epoch.
+	 */
+	nstime_t epoch;
+	/* Deadline randomness generator. */
+	uint64_t jitter_state;
+	/*
+	 * Deadline for current epoch.  This is the sum of interval and per
+	 * epoch jitter which is a uniform random variable in [0..interval).
+	 * Epochs always advance by precise multiples of interval, but we
+	 * randomize the deadline to reduce the likelihood of arenas purging in
+	 * lockstep.
+	 */
+	nstime_t deadline;
+	/*
+	 * The number of pages we cap ourselves at in the current epoch, per
+	 * decay policies.  Updated on an epoch change.  After an epoch change,
+	 * the caller should take steps to try to purge down to this amount.
+	 */
+	size_t npages_limit;
+	/*
+	 * Number of unpurged pages at beginning of current epoch.  During epoch
+	 * advancement we use the delta between arena->decay_*.nunpurged and
+	 * ecache_npages_get(&arena->ecache_*) to determine how many dirty pages,
+	 * if any, were generated.
+	 */
+	size_t nunpurged;
+	/*
+	 * Trailing log of how many unused dirty pages were generated during
+	 * each of the past SMOOTHSTEP_NSTEPS decay epochs, where the last
+	 * element is the most recent epoch.  Corresponding epoch times are
+	 * relative to epoch.
+	 *
+	 * Updated only on epoch advance, triggered by
+	 * decay_maybe_advance_epoch, below.
+	 */
+	size_t backlog[SMOOTHSTEP_NSTEPS];
+
+	/* Peak number of pages in associated extents.  Used for debug only. */
+	uint64_t ceil_npages;
+};
+
+/*
+ * The current decay time setting.  This is the only public access to a decay_t
+ * that's allowed without holding mtx.
+ */
+static inline ssize_t
+decay_ms_read(const decay_t *decay) {
+	return atomic_load_zd(&decay->time_ms, ATOMIC_RELAXED);
+}
+
+/*
+ * See the comment on the struct field -- the limit on pages we should allow in
+ * this decay state this epoch.
+ */
+static inline size_t
+decay_npages_limit_get(const decay_t *decay) {
+	return decay->npages_limit;
+}
+
+/* How many unused dirty pages were generated during the last epoch. */
+static inline size_t
+decay_epoch_npages_delta(const decay_t *decay) {
+	return decay->backlog[SMOOTHSTEP_NSTEPS - 1];
+}
+
+/*
+ * Current epoch duration, in nanoseconds.  Given that new epochs are started
+ * somewhat haphazardly, this is not necessarily exactly the time between any
+ * two calls to decay_maybe_advance_epoch; see the comments on fields in the
+ * decay_t.
+ */
+static inline uint64_t
+decay_epoch_duration_ns(const decay_t *decay) {
+	return nstime_ns(&decay->interval);
+}
+
+static inline bool
+decay_immediately(const decay_t *decay) {
+	ssize_t decay_ms = decay_ms_read(decay);
+	return decay_ms == 0;
+}
+
+static inline bool
+decay_disabled(const decay_t *decay) {
+	ssize_t decay_ms = decay_ms_read(decay);
+	return decay_ms < 0;
+}
+
+/* Returns true if decay is enabled and done gradually. */
+static inline bool
+decay_gradually(const decay_t *decay) {
+	ssize_t decay_ms = decay_ms_read(decay);
+	return decay_ms > 0;
+}
+
+/*
+ * Returns true if the passed in decay time setting is valid.
+ * < -1 : invalid
+ * -1   : never decay
+ *  0   : decay immediately
+ *  > 0 : some positive decay time, up to a maximum allowed value of
+ *  NSTIME_SEC_MAX * 1000, which corresponds to decaying somewhere in the early
+ *  27th century.  By that time, we expect to have implemented alternate purging
+ *  strategies.
+ */
+bool decay_ms_valid(ssize_t decay_ms);
+
+/*
+ * As a precondition, the decay_t must be zeroed out (as if with memset).
+ *
+ * Returns true on error.
+ */
+bool decay_init(decay_t *decay, nstime_t *cur_time, ssize_t decay_ms);
+
+/*
+ * Given an already-initialized decay_t, reinitialize it with the given decay
+ * time.  The decay_t must have previously been initialized (and should not then
+ * be zeroed).
+ */
+void decay_reinit(decay_t *decay, nstime_t *cur_time, ssize_t decay_ms);
+
+/*
+ * Compute how many of 'npages_new' pages we would need to purge in 'time'.
+ */
+uint64_t decay_npages_purge_in(decay_t *decay, nstime_t *time,
+    size_t npages_new);
+
+/* Returns true if the epoch advanced and there are pages to purge. */
+bool decay_maybe_advance_epoch(decay_t *decay, nstime_t *new_time,
+    size_t current_npages);
+
+/*
+ * Calculates wait time until a number of pages in the interval
+ * [0.5 * npages_threshold .. 1.5 * npages_threshold] should be purged.
+ *
+ * Returns number of nanoseconds or DECAY_UNBOUNDED_TIME_TO_PURGE in case of
+ * indefinite wait.
+ */
+uint64_t decay_ns_until_purge(decay_t *decay, size_t npages_current,
+    uint64_t npages_threshold);
+
+#endif /* JEMALLOC_INTERNAL_DECAY_H */
diff --git a/deps/jemalloc/include/jemalloc/internal/div.h b/deps/jemalloc/include/jemalloc/internal/div.h
new file mode 100644
index 0000000..aebae93
--- /dev/null
+++ b/deps/jemalloc/include/jemalloc/internal/div.h
@@ -0,0 +1,41 @@
+#ifndef JEMALLOC_INTERNAL_DIV_H
+#define JEMALLOC_INTERNAL_DIV_H
+
+#include "jemalloc/internal/assert.h"
+
+/*
+ * This module does the division that computes the index of a region in a slab,
+ * given its offset relative to the base.
+ * That is, given a divisor d, an n = i * d (all integers), we'll return i.
+ * We do some pre-computation to do this more quickly than a CPU division
+ * instruction.
+ * We bound n < 2^32, and don't support dividing by one.
+ */
+
+typedef struct div_info_s div_info_t;
+struct div_info_s {
+	uint32_t magic;
+#ifdef JEMALLOC_DEBUG
+	size_t d;
+#endif
+};
+
+void div_init(div_info_t *div_info, size_t divisor);
+
+static inline size_t
+div_compute(div_info_t *div_info, size_t n) {
+	assert(n <= (uint32_t)-1);
+	/*
+	 * This generates, e.g. mov; imul; shr on x86-64. On a 32-bit machine,
+	 * the compilers I tried were all smart enough to turn this into the
+	 * appropriate "get the high 32 bits of the result of a multiply" (e.g.
+	 * mul; mov edx eax; on x86, umull on arm, etc.).
+	 */
+	size_t i = ((uint64_t)n * (uint64_t)div_info->magic) >> 32;
+#ifdef JEMALLOC_DEBUG
+	assert(i * div_info->d == n);
+#endif
+	return i;
+}
+
+#endif /* JEMALLOC_INTERNAL_DIV_H */
diff --git a/deps/jemalloc/include/jemalloc/internal/ecache.h b/deps/jemalloc/include/jemalloc/internal/ecache.h
new file mode 100644
index 0000000..71cae3e
--- /dev/null
+++ b/deps/jemalloc/include/jemalloc/internal/ecache.h
@@ -0,0 +1,55 @@
+#ifndef JEMALLOC_INTERNAL_ECACHE_H
+#define JEMALLOC_INTERNAL_ECACHE_H
+
+#include "jemalloc/internal/eset.h"
+#include "jemalloc/internal/san.h"
+#include "jemalloc/internal/mutex.h"
+
+typedef struct ecache_s ecache_t;
+struct ecache_s {
+	malloc_mutex_t mtx;
+	eset_t eset;
+	eset_t guarded_eset;
+	/* All stored extents must be in the same state. */
+	extent_state_t state;
+	/* The index of the ehooks the ecache is associated with. */
+	unsigned ind;
+	/*
+	 * If true, delay coalescing until eviction; otherwise coalesce during
+	 * deallocation.
+	 */
+	bool delay_coalesce;
+};
+
+static inline size_t
+ecache_npages_get(ecache_t *ecache) {
+	return eset_npages_get(&ecache->eset) +
+	    eset_npages_get(&ecache->guarded_eset);
+}
+
+/* Get the number of extents in the given page size index. */
+static inline size_t
+ecache_nextents_get(ecache_t *ecache, pszind_t ind) {
+	return eset_nextents_get(&ecache->eset, ind) +
+	    eset_nextents_get(&ecache->guarded_eset, ind);
+}
+
+/* Get the sum total bytes of the extents in the given page size index. */
+static inline size_t
+ecache_nbytes_get(ecache_t *ecache, pszind_t ind) {
+	return eset_nbytes_get(&ecache->eset, ind) +
+	    eset_nbytes_get(&ecache->guarded_eset, ind);
+}
+
+static inline unsigned
+ecache_ind_get(ecache_t *ecache) {
+	return ecache->ind;
+}
+
+bool ecache_init(tsdn_t *tsdn, ecache_t *ecache, extent_state_t state,
+    unsigned ind, bool delay_coalesce);
+void ecache_prefork(tsdn_t *tsdn, ecache_t *ecache);
+void ecache_postfork_parent(tsdn_t *tsdn, ecache_t *ecache);
+void ecache_postfork_child(tsdn_t *tsdn, ecache_t *ecache);
+
+#endif /* JEMALLOC_INTERNAL_ECACHE_H */
diff --git a/deps/jemalloc/include/jemalloc/internal/edata.h b/deps/jemalloc/include/jemalloc/internal/edata.h
new file mode 100644
index 0000000..af039ea
--- /dev/null
+++ b/deps/jemalloc/include/jemalloc/internal/edata.h
@@ -0,0 +1,698 @@
+#ifndef JEMALLOC_INTERNAL_EDATA_H
+#define JEMALLOC_INTERNAL_EDATA_H
+
+#include "jemalloc/internal/atomic.h"
+#include "jemalloc/internal/bin_info.h"
+#include "jemalloc/internal/bit_util.h"
+#include "jemalloc/internal/hpdata.h"
+#include "jemalloc/internal/nstime.h"
+#include "jemalloc/internal/ph.h"
+#include "jemalloc/internal/ql.h"
+#include "jemalloc/internal/sc.h"
+#include "jemalloc/internal/slab_data.h"
+#include "jemalloc/internal/sz.h"
+#include "jemalloc/internal/typed_list.h"
+
+/*
+ * sizeof(edata_t) is 128 bytes on 64-bit architectures.  Ensure the alignment
+ * to free up the low bits in the rtree leaf.
+ */
+#define EDATA_ALIGNMENT 128
+
+enum extent_state_e {
+	extent_state_active   = 0,
+	extent_state_dirty    = 1,
+	extent_state_muzzy    = 2,
+	extent_state_retained = 3,
+	extent_state_transition = 4, /* States below are intermediate. */
+	extent_state_merging = 5,
+	extent_state_max = 5 /* Sanity checking only. */
+};
+typedef enum extent_state_e extent_state_t;
+
+enum extent_head_state_e {
+	EXTENT_NOT_HEAD,
+	EXTENT_IS_HEAD   /* See comments in ehooks_default_merge_impl(). */
+};
+typedef enum extent_head_state_e extent_head_state_t;
+
+/*
+ * Which implementation of the page allocator interface, (PAI, defined in
+ * pai.h) owns the given extent?
+ */
+enum extent_pai_e {
+	EXTENT_PAI_PAC = 0,
+	EXTENT_PAI_HPA = 1
+};
+typedef enum extent_pai_e extent_pai_t;
+
+struct e_prof_info_s {
+	/* Time when this was allocated. */
+	nstime_t	e_prof_alloc_time;
+	/* Allocation request size. */
+	size_t		e_prof_alloc_size;
+	/* Points to a prof_tctx_t. */
+	atomic_p_t	e_prof_tctx;
+	/*
+	 * Points to a prof_recent_t for the allocation; NULL
+	 * means the recent allocation record no longer exists.
+	 * Protected by prof_recent_alloc_mtx.
+	 */
+	atomic_p_t	e_prof_recent_alloc;
+};
+typedef struct e_prof_info_s e_prof_info_t;
+
+/*
+ * The information about a particular edata that lives in an emap.  Space is
+ * more precious there (the information, plus the edata pointer, has to live in
+ * a 64-bit word if we want to enable a packed representation.
+ *
+ * There are two things that are special about the information here:
+ * - It's quicker to access.  You have one fewer pointer hop, since finding the
+ *   edata_t associated with an item always requires accessing the rtree leaf in
+ *   which this data is stored.
+ * - It can be read unsynchronized, and without worrying about lifetime issues.
+ */
+typedef struct edata_map_info_s edata_map_info_t;
+struct edata_map_info_s {
+	bool slab;
+	szind_t szind;
+};
+
+typedef struct edata_cmp_summary_s edata_cmp_summary_t;
+struct edata_cmp_summary_s {
+	uint64_t sn;
+	uintptr_t addr;
+};
+
+/* Extent (span of pages).  Use accessor functions for e_* fields. */
+typedef struct edata_s edata_t;
+ph_structs(edata_avail, edata_t);
+ph_structs(edata_heap, edata_t);
+struct edata_s {
+	/*
+	 * Bitfield containing several fields:
+	 *
+	 * a: arena_ind
+	 * b: slab
+	 * c: committed
+	 * p: pai
+	 * z: zeroed
+	 * g: guarded
+	 * t: state
+	 * i: szind
+	 * f: nfree
+	 * s: bin_shard
+	 *
+	 * 00000000 ... 0000ssss ssffffff ffffiiii iiiitttg zpcbaaaa aaaaaaaa
+	 *
+	 * arena_ind: Arena from which this extent came, or all 1 bits if
+	 *            unassociated.
+	 *
+	 * slab: The slab flag indicates whether the extent is used for a slab
+	 *       of small regions.  This helps differentiate small size classes,
+	 *       and it indicates whether interior pointers can be looked up via
+	 *       iealloc().
+	 *
+	 * committed: The committed flag indicates whether physical memory is
+	 *            committed to the extent, whether explicitly or implicitly
+	 *            as on a system that overcommits and satisfies physical
+	 *            memory needs on demand via soft page faults.
+	 *
+	 * pai: The pai flag is an extent_pai_t.
+	 *
+	 * zeroed: The zeroed flag is used by extent recycling code to track
+	 *         whether memory is zero-filled.
+	 *
+	 * guarded: The guarded flag is use by the sanitizer to track whether
+	 *          the extent has page guards around it.
+	 *
+	 * state: The state flag is an extent_state_t.
+	 *
+	 * szind: The szind flag indicates usable size class index for
+	 *        allocations residing in this extent, regardless of whether the
+	 *        extent is a slab.  Extent size and usable size often differ
+	 *        even for non-slabs, either due to sz_large_pad or promotion of
+	 *        sampled small regions.
+	 *
+	 * nfree: Number of free regions in slab.
+	 *
+	 * bin_shard: the shard of the bin from which this extent came.
+	 */
+	uint64_t		e_bits;
+#define MASK(CURRENT_FIELD_WIDTH, CURRENT_FIELD_SHIFT) ((((((uint64_t)0x1U) << (CURRENT_FIELD_WIDTH)) - 1)) << (CURRENT_FIELD_SHIFT))
+
+#define EDATA_BITS_ARENA_WIDTH  MALLOCX_ARENA_BITS
+#define EDATA_BITS_ARENA_SHIFT  0
+#define EDATA_BITS_ARENA_MASK  MASK(EDATA_BITS_ARENA_WIDTH, EDATA_BITS_ARENA_SHIFT)
+
+#define EDATA_BITS_SLAB_WIDTH  1
+#define EDATA_BITS_SLAB_SHIFT  (EDATA_BITS_ARENA_WIDTH + EDATA_BITS_ARENA_SHIFT)
+#define EDATA_BITS_SLAB_MASK  MASK(EDATA_BITS_SLAB_WIDTH, EDATA_BITS_SLAB_SHIFT)
+
+#define EDATA_BITS_COMMITTED_WIDTH  1
+#define EDATA_BITS_COMMITTED_SHIFT  (EDATA_BITS_SLAB_WIDTH + EDATA_BITS_SLAB_SHIFT)
+#define EDATA_BITS_COMMITTED_MASK  MASK(EDATA_BITS_COMMITTED_WIDTH, EDATA_BITS_COMMITTED_SHIFT)
+
+#define EDATA_BITS_PAI_WIDTH  1
+#define EDATA_BITS_PAI_SHIFT  (EDATA_BITS_COMMITTED_WIDTH + EDATA_BITS_COMMITTED_SHIFT)
+#define EDATA_BITS_PAI_MASK  MASK(EDATA_BITS_PAI_WIDTH, EDATA_BITS_PAI_SHIFT)
+
+#define EDATA_BITS_ZEROED_WIDTH  1
+#define EDATA_BITS_ZEROED_SHIFT  (EDATA_BITS_PAI_WIDTH + EDATA_BITS_PAI_SHIFT)
+#define EDATA_BITS_ZEROED_MASK  MASK(EDATA_BITS_ZEROED_WIDTH, EDATA_BITS_ZEROED_SHIFT)
+
+#define EDATA_BITS_GUARDED_WIDTH  1
+#define EDATA_BITS_GUARDED_SHIFT  (EDATA_BITS_ZEROED_WIDTH + EDATA_BITS_ZEROED_SHIFT)
+#define EDATA_BITS_GUARDED_MASK  MASK(EDATA_BITS_GUARDED_WIDTH, EDATA_BITS_GUARDED_SHIFT)
+
+#define EDATA_BITS_STATE_WIDTH  3
+#define EDATA_BITS_STATE_SHIFT  (EDATA_BITS_GUARDED_WIDTH + EDATA_BITS_GUARDED_SHIFT)
+#define EDATA_BITS_STATE_MASK  MASK(EDATA_BITS_STATE_WIDTH, EDATA_BITS_STATE_SHIFT)
+
+#define EDATA_BITS_SZIND_WIDTH  LG_CEIL(SC_NSIZES)
+#define EDATA_BITS_SZIND_SHIFT  (EDATA_BITS_STATE_WIDTH + EDATA_BITS_STATE_SHIFT)
+#define EDATA_BITS_SZIND_MASK  MASK(EDATA_BITS_SZIND_WIDTH, EDATA_BITS_SZIND_SHIFT)
+
+#define EDATA_BITS_NFREE_WIDTH  (SC_LG_SLAB_MAXREGS + 1)
+#define EDATA_BITS_NFREE_SHIFT  (EDATA_BITS_SZIND_WIDTH + EDATA_BITS_SZIND_SHIFT)
+#define EDATA_BITS_NFREE_MASK  MASK(EDATA_BITS_NFREE_WIDTH, EDATA_BITS_NFREE_SHIFT)
+
+#define EDATA_BITS_BINSHARD_WIDTH  6
+#define EDATA_BITS_BINSHARD_SHIFT  (EDATA_BITS_NFREE_WIDTH + EDATA_BITS_NFREE_SHIFT)
+#define EDATA_BITS_BINSHARD_MASK  MASK(EDATA_BITS_BINSHARD_WIDTH, EDATA_BITS_BINSHARD_SHIFT)
+
+#define EDATA_BITS_IS_HEAD_WIDTH 1
+#define EDATA_BITS_IS_HEAD_SHIFT  (EDATA_BITS_BINSHARD_WIDTH + EDATA_BITS_BINSHARD_SHIFT)
+#define EDATA_BITS_IS_HEAD_MASK  MASK(EDATA_BITS_IS_HEAD_WIDTH, EDATA_BITS_IS_HEAD_SHIFT)
+
+	/* Pointer to the extent that this structure is responsible for. */
+	void			*e_addr;
+
+	union {
+		/*
+		 * Extent size and serial number associated with the extent
+		 * structure (different than the serial number for the extent at
+		 * e_addr).
+		 *
+		 * ssssssss [...] ssssssss ssssnnnn nnnnnnnn
+		 */
+		size_t			e_size_esn;
+	#define EDATA_SIZE_MASK	((size_t)~(PAGE-1))
+	#define EDATA_ESN_MASK		((size_t)PAGE-1)
+		/* Base extent size, which may not be a multiple of PAGE. */
+		size_t			e_bsize;
+	};
+
+	/*
+	 * If this edata is a user allocation from an HPA, it comes out of some
+	 * pageslab (we don't yet support huegpage allocations that don't fit
+	 * into pageslabs).  This tracks it.
+	 */
+	hpdata_t *e_ps;
+
+	/*
+	 * Serial number.  These are not necessarily unique; splitting an extent
+	 * results in two extents with the same serial number.
+	 */
+	uint64_t e_sn;
+
+	union {
+		/*
+		 * List linkage used when the edata_t is active; either in
+		 * arena's large allocations or bin_t's slabs_full.
+		 */
+		ql_elm(edata_t)	ql_link_active;
+		/*
+		 * Pairing heap linkage.  Used whenever the extent is inactive
+		 * (in the page allocators), or when it is active and in
+		 * slabs_nonfull, or when the edata_t is unassociated with an
+		 * extent and sitting in an edata_cache.
+		 */
+		union {
+			edata_heap_link_t heap_link;
+			edata_avail_link_t avail_link;
+		};
+	};
+
+	union {
+		/*
+		 * List linkage used when the extent is inactive:
+		 * - Stashed dirty extents
+		 * - Ecache LRU functionality.
+		 */
+		ql_elm(edata_t) ql_link_inactive;
+		/* Small region slab metadata. */
+		slab_data_t	e_slab_data;
+
+		/* Profiling data, used for large objects. */
+		e_prof_info_t	e_prof_info;
+	};
+};
+
+TYPED_LIST(edata_list_active, edata_t, ql_link_active)
+TYPED_LIST(edata_list_inactive, edata_t, ql_link_inactive)
+
+static inline unsigned
+edata_arena_ind_get(const edata_t *edata) {
+	unsigned arena_ind = (unsigned)((edata->e_bits &
+	    EDATA_BITS_ARENA_MASK) >> EDATA_BITS_ARENA_SHIFT);
+	assert(arena_ind < MALLOCX_ARENA_LIMIT);
+
+	return arena_ind;
+}
+
+static inline szind_t
+edata_szind_get_maybe_invalid(const edata_t *edata) {
+	szind_t szind = (szind_t)((edata->e_bits & EDATA_BITS_SZIND_MASK) >>
+	    EDATA_BITS_SZIND_SHIFT);
+	assert(szind <= SC_NSIZES);
+	return szind;
+}
+
+static inline szind_t
+edata_szind_get(const edata_t *edata) {
+	szind_t szind = edata_szind_get_maybe_invalid(edata);
+	assert(szind < SC_NSIZES); /* Never call when "invalid". */
+	return szind;
+}
+
+static inline size_t
+edata_usize_get(const edata_t *edata) {
+	return sz_index2size(edata_szind_get(edata));
+}
+
+static inline unsigned
+edata_binshard_get(const edata_t *edata) {
+	unsigned binshard = (unsigned)((edata->e_bits &
+	    EDATA_BITS_BINSHARD_MASK) >> EDATA_BITS_BINSHARD_SHIFT);
+	assert(binshard < bin_infos[edata_szind_get(edata)].n_shards);
+	return binshard;
+}
+
+static inline uint64_t
+edata_sn_get(const edata_t *edata) {
+	return edata->e_sn;
+}
+
+static inline extent_state_t
+edata_state_get(const edata_t *edata) {
+	return (extent_state_t)((edata->e_bits & EDATA_BITS_STATE_MASK) >>
+	    EDATA_BITS_STATE_SHIFT);
+}
+
+static inline bool
+edata_guarded_get(const edata_t *edata) {
+	return (bool)((edata->e_bits & EDATA_BITS_GUARDED_MASK) >>
+	    EDATA_BITS_GUARDED_SHIFT);
+}
+
+static inline bool
+edata_zeroed_get(const edata_t *edata) {
+	return (bool)((edata->e_bits & EDATA_BITS_ZEROED_MASK) >>
+	    EDATA_BITS_ZEROED_SHIFT);
+}
+
+static inline bool
+edata_committed_get(const edata_t *edata) {
+	return (bool)((edata->e_bits & EDATA_BITS_COMMITTED_MASK) >>
+	    EDATA_BITS_COMMITTED_SHIFT);
+}
+
+static inline extent_pai_t
+edata_pai_get(const edata_t *edata) {
+	return (extent_pai_t)((edata->e_bits & EDATA_BITS_PAI_MASK) >>
+	    EDATA_BITS_PAI_SHIFT);
+}
+
+static inline bool
+edata_slab_get(const edata_t *edata) {
+	return (bool)((edata->e_bits & EDATA_BITS_SLAB_MASK) >>
+	    EDATA_BITS_SLAB_SHIFT);
+}
+
+static inline unsigned
+edata_nfree_get(const edata_t *edata) {
+	assert(edata_slab_get(edata));
+	return (unsigned)((edata->e_bits & EDATA_BITS_NFREE_MASK) >>
+	    EDATA_BITS_NFREE_SHIFT);
+}
+
+static inline void *
+edata_base_get(const edata_t *edata) {
+	assert(edata->e_addr == PAGE_ADDR2BASE(edata->e_addr) ||
+	    !edata_slab_get(edata));
+	return PAGE_ADDR2BASE(edata->e_addr);
+}
+
+static inline void *
+edata_addr_get(const edata_t *edata) {
+	assert(edata->e_addr == PAGE_ADDR2BASE(edata->e_addr) ||
+	    !edata_slab_get(edata));
+	return edata->e_addr;
+}
+
+static inline size_t
+edata_size_get(const edata_t *edata) {
+	return (edata->e_size_esn & EDATA_SIZE_MASK);
+}
+
+static inline size_t
+edata_esn_get(const edata_t *edata) {
+	return (edata->e_size_esn & EDATA_ESN_MASK);
+}
+
+static inline size_t
+edata_bsize_get(const edata_t *edata) {
+	return edata->e_bsize;
+}
+
+static inline hpdata_t *
+edata_ps_get(const edata_t *edata) {
+	assert(edata_pai_get(edata) == EXTENT_PAI_HPA);
+	return edata->e_ps;
+}
+
+static inline void *
+edata_before_get(const edata_t *edata) {
+	return (void *)((uintptr_t)edata_base_get(edata) - PAGE);
+}
+
+static inline void *
+edata_last_get(const edata_t *edata) {
+	return (void *)((uintptr_t)edata_base_get(edata) +
+	    edata_size_get(edata) - PAGE);
+}
+
+static inline void *
+edata_past_get(const edata_t *edata) {
+	return (void *)((uintptr_t)edata_base_get(edata) +
+	    edata_size_get(edata));
+}
+
+static inline slab_data_t *
+edata_slab_data_get(edata_t *edata) {
+	assert(edata_slab_get(edata));
+	return &edata->e_slab_data;
+}
+
+static inline const slab_data_t *
+edata_slab_data_get_const(const edata_t *edata) {
+	assert(edata_slab_get(edata));
+	return &edata->e_slab_data;
+}
+
+static inline prof_tctx_t *
+edata_prof_tctx_get(const edata_t *edata) {
+	return (prof_tctx_t *)atomic_load_p(&edata->e_prof_info.e_prof_tctx,
+	    ATOMIC_ACQUIRE);
+}
+
+static inline const nstime_t *
+edata_prof_alloc_time_get(const edata_t *edata) {
+	return &edata->e_prof_info.e_prof_alloc_time;
+}
+
+static inline size_t
+edata_prof_alloc_size_get(const edata_t *edata) {
+	return edata->e_prof_info.e_prof_alloc_size;
+}
+
+static inline prof_recent_t *
+edata_prof_recent_alloc_get_dont_call_directly(const edata_t *edata) {
+	return (prof_recent_t *)atomic_load_p(
+	    &edata->e_prof_info.e_prof_recent_alloc, ATOMIC_RELAXED);
+}
+
+static inline void
+edata_arena_ind_set(edata_t *edata, unsigned arena_ind) {
+	edata->e_bits = (edata->e_bits & ~EDATA_BITS_ARENA_MASK) |
+	    ((uint64_t)arena_ind << EDATA_BITS_ARENA_SHIFT);
+}
+
+static inline void
+edata_binshard_set(edata_t *edata, unsigned binshard) {
+	/* The assertion assumes szind is set already. */
+	assert(binshard < bin_infos[edata_szind_get(edata)].n_shards);
+	edata->e_bits = (edata->e_bits & ~EDATA_BITS_BINSHARD_MASK) |
+	    ((uint64_t)binshard << EDATA_BITS_BINSHARD_SHIFT);
+}
+
+static inline void
+edata_addr_set(edata_t *edata, void *addr) {
+	edata->e_addr = addr;
+}
+
+static inline void
+edata_size_set(edata_t *edata, size_t size) {
+	assert((size & ~EDATA_SIZE_MASK) == 0);
+	edata->e_size_esn = size | (edata->e_size_esn & ~EDATA_SIZE_MASK);
+}
+
+static inline void
+edata_esn_set(edata_t *edata, size_t esn) {
+	edata->e_size_esn = (edata->e_size_esn & ~EDATA_ESN_MASK) | (esn &
+	    EDATA_ESN_MASK);
+}
+
+static inline void
+edata_bsize_set(edata_t *edata, size_t bsize) {
+	edata->e_bsize = bsize;
+}
+
+static inline void
+edata_ps_set(edata_t *edata, hpdata_t *ps) {
+	assert(edata_pai_get(edata) == EXTENT_PAI_HPA);
+	edata->e_ps = ps;
+}
+
+static inline void
+edata_szind_set(edata_t *edata, szind_t szind) {
+	assert(szind <= SC_NSIZES); /* SC_NSIZES means "invalid". */
+	edata->e_bits = (edata->e_bits & ~EDATA_BITS_SZIND_MASK) |
+	    ((uint64_t)szind << EDATA_BITS_SZIND_SHIFT);
+}
+
+static inline void
+edata_nfree_set(edata_t *edata, unsigned nfree) {
+	assert(edata_slab_get(edata));
+	edata->e_bits = (edata->e_bits & ~EDATA_BITS_NFREE_MASK) |
+	    ((uint64_t)nfree << EDATA_BITS_NFREE_SHIFT);
+}
+
+static inline void
+edata_nfree_binshard_set(edata_t *edata, unsigned nfree, unsigned binshard) {
+	/* The assertion assumes szind is set already. */
+	assert(binshard < bin_infos[edata_szind_get(edata)].n_shards);
+	edata->e_bits = (edata->e_bits &
+	    (~EDATA_BITS_NFREE_MASK & ~EDATA_BITS_BINSHARD_MASK)) |
+	    ((uint64_t)binshard << EDATA_BITS_BINSHARD_SHIFT) |
+	    ((uint64_t)nfree << EDATA_BITS_NFREE_SHIFT);
+}
+
+static inline void
+edata_nfree_inc(edata_t *edata) {
+	assert(edata_slab_get(edata));
+	edata->e_bits += ((uint64_t)1U << EDATA_BITS_NFREE_SHIFT);
+}
+
+static inline void
+edata_nfree_dec(edata_t *edata) {
+	assert(edata_slab_get(edata));
+	edata->e_bits -= ((uint64_t)1U << EDATA_BITS_NFREE_SHIFT);
+}
+
+static inline void
+edata_nfree_sub(edata_t *edata, uint64_t n) {
+	assert(edata_slab_get(edata));
+	edata->e_bits -= (n << EDATA_BITS_NFREE_SHIFT);
+}
+
+static inline void
+edata_sn_set(edata_t *edata, uint64_t sn) {
+	edata->e_sn = sn;
+}
+
+static inline void
+edata_state_set(edata_t *edata, extent_state_t state) {
+	edata->e_bits = (edata->e_bits & ~EDATA_BITS_STATE_MASK) |
+	    ((uint64_t)state << EDATA_BITS_STATE_SHIFT);
+}
+
+static inline void
+edata_guarded_set(edata_t *edata, bool guarded) {
+	edata->e_bits = (edata->e_bits & ~EDATA_BITS_GUARDED_MASK) |
+	    ((uint64_t)guarded << EDATA_BITS_GUARDED_SHIFT);
+}
+
+static inline void
+edata_zeroed_set(edata_t *edata, bool zeroed) {
+	edata->e_bits = (edata->e_bits & ~EDATA_BITS_ZEROED_MASK) |
+	    ((uint64_t)zeroed << EDATA_BITS_ZEROED_SHIFT);
+}
+
+static inline void
+edata_committed_set(edata_t *edata, bool committed) {
+	edata->e_bits = (edata->e_bits & ~EDATA_BITS_COMMITTED_MASK) |
+	    ((uint64_t)committed << EDATA_BITS_COMMITTED_SHIFT);
+}
+
+static inline void
+edata_pai_set(edata_t *edata, extent_pai_t pai) {
+	edata->e_bits = (edata->e_bits & ~EDATA_BITS_PAI_MASK) |
+	    ((uint64_t)pai << EDATA_BITS_PAI_SHIFT);
+}
+
+static inline void
+edata_slab_set(edata_t *edata, bool slab) {
+	edata->e_bits = (edata->e_bits & ~EDATA_BITS_SLAB_MASK) |
+	    ((uint64_t)slab << EDATA_BITS_SLAB_SHIFT);
+}
+
+static inline void
+edata_prof_tctx_set(edata_t *edata, prof_tctx_t *tctx) {
+	atomic_store_p(&edata->e_prof_info.e_prof_tctx, tctx, ATOMIC_RELEASE);
+}
+
+static inline void
+edata_prof_alloc_time_set(edata_t *edata, nstime_t *t) {
+	nstime_copy(&edata->e_prof_info.e_prof_alloc_time, t);
+}
+
+static inline void
+edata_prof_alloc_size_set(edata_t *edata, size_t size) {
+	edata->e_prof_info.e_prof_alloc_size = size;
+}
+
+static inline void
+edata_prof_recent_alloc_set_dont_call_directly(edata_t *edata,
+    prof_recent_t *recent_alloc) {
+	atomic_store_p(&edata->e_prof_info.e_prof_recent_alloc, recent_alloc,
+	    ATOMIC_RELAXED);
+}
+
+static inline bool
+edata_is_head_get(edata_t *edata) {
+	return (bool)((edata->e_bits & EDATA_BITS_IS_HEAD_MASK) >>
+	    EDATA_BITS_IS_HEAD_SHIFT);
+}
+
+static inline void
+edata_is_head_set(edata_t *edata, bool is_head) {
+	edata->e_bits = (edata->e_bits & ~EDATA_BITS_IS_HEAD_MASK) |
+	    ((uint64_t)is_head << EDATA_BITS_IS_HEAD_SHIFT);
+}
+
+static inline bool
+edata_state_in_transition(extent_state_t state) {
+	return state >= extent_state_transition;
+}
+
+/*
+ * Because this function is implemented as a sequence of bitfield modifications,
+ * even though each individual bit is properly initialized, we technically read
+ * uninitialized data within it.  This is mostly fine, since most callers get
+ * their edatas from zeroing sources, but callers who make stack edata_ts need
+ * to manually zero them.
+ */
+static inline void
+edata_init(edata_t *edata, unsigned arena_ind, void *addr, size_t size,
+    bool slab, szind_t szind, uint64_t sn, extent_state_t state, bool zeroed,
+    bool committed, extent_pai_t pai, extent_head_state_t is_head) {
+	assert(addr == PAGE_ADDR2BASE(addr) || !slab);
+
+	edata_arena_ind_set(edata, arena_ind);
+	edata_addr_set(edata, addr);
+	edata_size_set(edata, size);
+	edata_slab_set(edata, slab);
+	edata_szind_set(edata, szind);
+	edata_sn_set(edata, sn);
+	edata_state_set(edata, state);
+	edata_guarded_set(edata, false);
+	edata_zeroed_set(edata, zeroed);
+	edata_committed_set(edata, committed);
+	edata_pai_set(edata, pai);
+	edata_is_head_set(edata, is_head == EXTENT_IS_HEAD);
+	if (config_prof) {
+		edata_prof_tctx_set(edata, NULL);
+	}
+}
+
+static inline void
+edata_binit(edata_t *edata, void *addr, size_t bsize, uint64_t sn) {
+	edata_arena_ind_set(edata, (1U << MALLOCX_ARENA_BITS) - 1);
+	edata_addr_set(edata, addr);
+	edata_bsize_set(edata, bsize);
+	edata_slab_set(edata, false);
+	edata_szind_set(edata, SC_NSIZES);
+	edata_sn_set(edata, sn);
+	edata_state_set(edata, extent_state_active);
+	edata_guarded_set(edata, false);
+	edata_zeroed_set(edata, true);
+	edata_committed_set(edata, true);
+	/*
+	 * This isn't strictly true, but base allocated extents never get
+	 * deallocated and can't be looked up in the emap, but no sense in
+	 * wasting a state bit to encode this fact.
+	 */
+	edata_pai_set(edata, EXTENT_PAI_PAC);
+}
+
+static inline int
+edata_esn_comp(const edata_t *a, const edata_t *b) {
+	size_t a_esn = edata_esn_get(a);
+	size_t b_esn = edata_esn_get(b);
+
+	return (a_esn > b_esn) - (a_esn < b_esn);
+}
+
+static inline int
+edata_ead_comp(const edata_t *a, const edata_t *b) {
+	uintptr_t a_eaddr = (uintptr_t)a;
+	uintptr_t b_eaddr = (uintptr_t)b;
+
+	return (a_eaddr > b_eaddr) - (a_eaddr < b_eaddr);
+}
+
+static inline edata_cmp_summary_t
+edata_cmp_summary_get(const edata_t *edata) {
+	return (edata_cmp_summary_t){edata_sn_get(edata),
+		(uintptr_t)edata_addr_get(edata)};
+}
+
+static inline int
+edata_cmp_summary_comp(edata_cmp_summary_t a, edata_cmp_summary_t b) {
+	int ret;
+	ret = (a.sn > b.sn) - (a.sn < b.sn);
+	if (ret != 0) {
+		return ret;
+	}
+	ret = (a.addr > b.addr) - (a.addr < b.addr);
+	return ret;
+}
+
+static inline int
+edata_snad_comp(const edata_t *a, const edata_t *b) {
+	edata_cmp_summary_t a_cmp = edata_cmp_summary_get(a);
+	edata_cmp_summary_t b_cmp = edata_cmp_summary_get(b);
+
+	return edata_cmp_summary_comp(a_cmp, b_cmp);
+}
+
+static inline int
+edata_esnead_comp(const edata_t *a, const edata_t *b) {
+	int ret;
+
+	ret = edata_esn_comp(a, b);
+	if (ret != 0) {
+		return ret;
+	}
+
+	ret = edata_ead_comp(a, b);
+	return ret;
+}
+
+ph_proto(, edata_avail, edata_t)
+ph_proto(, edata_heap, edata_t)
+
+#endif /* JEMALLOC_INTERNAL_EDATA_H */
diff --git a/deps/jemalloc/include/jemalloc/internal/edata_cache.h b/deps/jemalloc/include/jemalloc/internal/edata_cache.h
new file mode 100644
index 0000000..8b6c0ef
--- /dev/null
+++ b/deps/jemalloc/include/jemalloc/internal/edata_cache.h
@@ -0,0 +1,49 @@
+#ifndef JEMALLOC_INTERNAL_EDATA_CACHE_H
+#define JEMALLOC_INTERNAL_EDATA_CACHE_H
+
+#include "jemalloc/internal/base.h"
+
+/* For tests only. */
+#define EDATA_CACHE_FAST_FILL 4
+
+/*
+ * A cache of edata_t structures allocated via base_alloc_edata (as opposed to
+ * the underlying extents they describe).  The contents of returned edata_t
+ * objects are garbage and cannot be relied upon.
+ */
+
+typedef struct edata_cache_s edata_cache_t;
+struct edata_cache_s {
+	edata_avail_t avail;
+	atomic_zu_t count;
+	malloc_mutex_t mtx;
+	base_t *base;
+};
+
+bool edata_cache_init(edata_cache_t *edata_cache, base_t *base);
+edata_t *edata_cache_get(tsdn_t *tsdn, edata_cache_t *edata_cache);
+void edata_cache_put(tsdn_t *tsdn, edata_cache_t *edata_cache, edata_t *edata);
+
+void edata_cache_prefork(tsdn_t *tsdn, edata_cache_t *edata_cache);
+void edata_cache_postfork_parent(tsdn_t *tsdn, edata_cache_t *edata_cache);
+void edata_cache_postfork_child(tsdn_t *tsdn, edata_cache_t *edata_cache);
+
+/*
+ * An edata_cache_small is like an edata_cache, but it relies on external
+ * synchronization and avoids first-fit strategies.
+ */
+
+typedef struct edata_cache_fast_s edata_cache_fast_t;
+struct edata_cache_fast_s {
+	edata_list_inactive_t list;
+	edata_cache_t *fallback;
+	bool disabled;
+};
+
+void edata_cache_fast_init(edata_cache_fast_t *ecs, edata_cache_t *fallback);
+edata_t *edata_cache_fast_get(tsdn_t *tsdn, edata_cache_fast_t *ecs);
+void edata_cache_fast_put(tsdn_t *tsdn, edata_cache_fast_t *ecs,
+    edata_t *edata);
+void edata_cache_fast_disable(tsdn_t *tsdn, edata_cache_fast_t *ecs);
+
+#endif /* JEMALLOC_INTERNAL_EDATA_CACHE_H */
diff --git a/deps/jemalloc/include/jemalloc/internal/ehooks.h b/deps/jemalloc/include/jemalloc/internal/ehooks.h
new file mode 100644
index 0000000..8d9513e
--- /dev/null
+++ b/deps/jemalloc/include/jemalloc/internal/ehooks.h
@@ -0,0 +1,412 @@
+#ifndef JEMALLOC_INTERNAL_EHOOKS_H
+#define JEMALLOC_INTERNAL_EHOOKS_H
+
+#include "jemalloc/internal/atomic.h"
+#include "jemalloc/internal/extent_mmap.h"
+
+/*
+ * This module is the internal interface to the extent hooks (both
+ * user-specified and external).  Eventually, this will give us the flexibility
+ * to use multiple different versions of user-visible extent-hook APIs under a
+ * single user interface.
+ *
+ * Current API expansions (not available to anyone but the default hooks yet):
+ *   - Head state tracking.  Hooks can decide whether or not to merge two
+ *     extents based on whether or not one of them is the head (i.e. was
+ *     allocated on its own).  The later extent loses its "head" status.
+ */
+
+extern const extent_hooks_t ehooks_default_extent_hooks;
+
+typedef struct ehooks_s ehooks_t;
+struct ehooks_s {
+	/*
+	 * The user-visible id that goes with the ehooks (i.e. that of the base
+	 * they're a part of, the associated arena's index within the arenas
+	 * array).
+	 */
+	unsigned ind;
+	/* Logically an extent_hooks_t *. */
+	atomic_p_t ptr;
+};
+
+extern const extent_hooks_t ehooks_default_extent_hooks;
+
+/*
+ * These are not really part of the public API.  Each hook has a fast-path for
+ * the default-hooks case that can avoid various small inefficiencies:
+ *   - Forgetting tsd and then calling tsd_get within the hook.
+ *   - Getting more state than necessary out of the extent_t.
+ *   - Doing arena_ind -> arena -> arena_ind lookups.
+ * By making the calls to these functions visible to the compiler, it can move
+ * those extra bits of computation down below the fast-paths where they get ignored.
+ */
+void *ehooks_default_alloc_impl(tsdn_t *tsdn, void *new_addr, size_t size,
+    size_t alignment, bool *zero, bool *commit, unsigned arena_ind);
+bool ehooks_default_dalloc_impl(void *addr, size_t size);
+void ehooks_default_destroy_impl(void *addr, size_t size);
+bool ehooks_default_commit_impl(void *addr, size_t offset, size_t length);
+bool ehooks_default_decommit_impl(void *addr, size_t offset, size_t length);
+#ifdef PAGES_CAN_PURGE_LAZY
+bool ehooks_default_purge_lazy_impl(void *addr, size_t offset, size_t length);
+#endif
+#ifdef PAGES_CAN_PURGE_FORCED
+bool ehooks_default_purge_forced_impl(void *addr, size_t offset, size_t length);
+#endif
+bool ehooks_default_split_impl();
+/*
+ * Merge is the only default extent hook we declare -- see the comment in
+ * ehooks_merge.
+ */
+bool ehooks_default_merge(extent_hooks_t *extent_hooks, void *addr_a,
+    size_t size_a, void *addr_b, size_t size_b, bool committed,
+    unsigned arena_ind);
+bool ehooks_default_merge_impl(tsdn_t *tsdn, void *addr_a, void *addr_b);
+void ehooks_default_zero_impl(void *addr, size_t size);
+void ehooks_default_guard_impl(void *guard1, void *guard2);
+void ehooks_default_unguard_impl(void *guard1, void *guard2);
+
+/*
+ * We don't officially support reentrancy from wtihin the extent hooks.  But
+ * various people who sit within throwing distance of the jemalloc team want
+ * that functionality in certain limited cases.  The default reentrancy guards
+ * assert that we're not reentrant from a0 (since it's the bootstrap arena,
+ * where reentrant allocations would be redirected), which we would incorrectly
+ * trigger in cases where a0 has extent hooks (those hooks themselves can't be
+ * reentrant, then, but there are reasonable uses for such functionality, like
+ * putting internal metadata on hugepages).  Therefore, we use the raw
+ * reentrancy guards.
+ *
+ * Eventually, we need to think more carefully about whether and where we
+ * support allocating from within extent hooks (and what that means for things
+ * like profiling, stats collection, etc.), and document what the guarantee is.
+ */
+static inline void
+ehooks_pre_reentrancy(tsdn_t *tsdn) {
+	tsd_t *tsd = tsdn_null(tsdn) ? tsd_fetch() : tsdn_tsd(tsdn);
+	tsd_pre_reentrancy_raw(tsd);
+}
+
+static inline void
+ehooks_post_reentrancy(tsdn_t *tsdn) {
+	tsd_t *tsd = tsdn_null(tsdn) ? tsd_fetch() : tsdn_tsd(tsdn);
+	tsd_post_reentrancy_raw(tsd);
+}
+
+/* Beginning of the public API. */
+void ehooks_init(ehooks_t *ehooks, extent_hooks_t *extent_hooks, unsigned ind);
+
+static inline unsigned
+ehooks_ind_get(const ehooks_t *ehooks) {
+	return ehooks->ind;
+}
+
+static inline void
+ehooks_set_extent_hooks_ptr(ehooks_t *ehooks, extent_hooks_t *extent_hooks) {
+	atomic_store_p(&ehooks->ptr, extent_hooks, ATOMIC_RELEASE);
+}
+
+static inline extent_hooks_t *
+ehooks_get_extent_hooks_ptr(ehooks_t *ehooks) {
+	return (extent_hooks_t *)atomic_load_p(&ehooks->ptr, ATOMIC_ACQUIRE);
+}
+
+static inline bool
+ehooks_are_default(ehooks_t *ehooks) {
+	return ehooks_get_extent_hooks_ptr(ehooks) ==
+	    &ehooks_default_extent_hooks;
+}
+
+/*
+ * In some cases, a caller needs to allocate resources before attempting to call
+ * a hook.  If that hook is doomed to fail, this is wasteful.  We therefore
+ * include some checks for such cases.
+ */
+static inline bool
+ehooks_dalloc_will_fail(ehooks_t *ehooks) {
+	if (ehooks_are_default(ehooks)) {
+		return opt_retain;
+	} else {
+		return ehooks_get_extent_hooks_ptr(ehooks)->dalloc == NULL;
+	}
+}
+
+static inline bool
+ehooks_split_will_fail(ehooks_t *ehooks) {
+	return ehooks_get_extent_hooks_ptr(ehooks)->split == NULL;
+}
+
+static inline bool
+ehooks_merge_will_fail(ehooks_t *ehooks) {
+	return ehooks_get_extent_hooks_ptr(ehooks)->merge == NULL;
+}
+
+static inline bool
+ehooks_guard_will_fail(ehooks_t *ehooks) {
+	/*
+	 * Before the guard hooks are officially introduced, limit the use to
+	 * the default hooks only.
+	 */
+	return !ehooks_are_default(ehooks);
+}
+
+/*
+ * Some hooks are required to return zeroed memory in certain situations.  In
+ * debug mode, we do some heuristic checks that they did what they were supposed
+ * to.
+ *
+ * This isn't really ehooks-specific (i.e. anyone can check for zeroed memory).
+ * But incorrect zero information indicates an ehook bug.
+ */
+static inline void
+ehooks_debug_zero_check(void *addr, size_t size) {
+	assert(((uintptr_t)addr & PAGE_MASK) == 0);
+	assert((size & PAGE_MASK) == 0);
+	assert(size > 0);
+	if (config_debug) {
+		/* Check the whole first page. */
+		size_t *p = (size_t *)addr;
+		for (size_t i = 0; i < PAGE / sizeof(size_t); i++) {
+			assert(p[i] == 0);
+		}
+		/*
+		 * And 4 spots within.  There's a tradeoff here; the larger
+		 * this number, the more likely it is that we'll catch a bug
+		 * where ehooks return a sparsely non-zero range.  But
+		 * increasing the number of checks also increases the number of
+		 * page faults in debug mode.  FreeBSD does much of their
+		 * day-to-day development work in debug mode, so we don't want
+		 * even the debug builds to be too slow.
+		 */
+		const size_t nchecks = 4;
+		assert(PAGE >= sizeof(size_t) * nchecks);
+		for (size_t i = 0; i < nchecks; ++i) {
+			assert(p[i * (size / sizeof(size_t) / nchecks)] == 0);
+		}
+	}
+}
+
+
+static inline void *
+ehooks_alloc(tsdn_t *tsdn, ehooks_t *ehooks, void *new_addr, size_t size,
+    size_t alignment, bool *zero, bool *commit) {
+	bool orig_zero = *zero;
+	void *ret;
+	extent_hooks_t *extent_hooks = ehooks_get_extent_hooks_ptr(ehooks);
+	if (extent_hooks == &ehooks_default_extent_hooks) {
+		ret = ehooks_default_alloc_impl(tsdn, new_addr, size,
+		    alignment, zero, commit, ehooks_ind_get(ehooks));
+	} else {
+		ehooks_pre_reentrancy(tsdn);
+		ret = extent_hooks->alloc(extent_hooks, new_addr, size,
+		    alignment, zero, commit, ehooks_ind_get(ehooks));
+		ehooks_post_reentrancy(tsdn);
+	}
+	assert(new_addr == NULL || ret == NULL || new_addr == ret);
+	assert(!orig_zero || *zero);
+	if (*zero && ret != NULL) {
+		ehooks_debug_zero_check(ret, size);
+	}
+	return ret;
+}
+
+static inline bool
+ehooks_dalloc(tsdn_t *tsdn, ehooks_t *ehooks, void *addr, size_t size,
+    bool committed) {
+	extent_hooks_t *extent_hooks = ehooks_get_extent_hooks_ptr(ehooks);
+	if (extent_hooks == &ehooks_default_extent_hooks) {
+		return ehooks_default_dalloc_impl(addr, size);
+	} else if (extent_hooks->dalloc == NULL) {
+		return true;
+	} else {
+		ehooks_pre_reentrancy(tsdn);
+		bool err = extent_hooks->dalloc(extent_hooks, addr, size,
+		    committed, ehooks_ind_get(ehooks));
+		ehooks_post_reentrancy(tsdn);
+		return err;
+	}
+}
+
+static inline void
+ehooks_destroy(tsdn_t *tsdn, ehooks_t *ehooks, void *addr, size_t size,
+    bool committed) {
+	extent_hooks_t *extent_hooks = ehooks_get_extent_hooks_ptr(ehooks);
+	if (extent_hooks == &ehooks_default_extent_hooks) {
+		ehooks_default_destroy_impl(addr, size);
+	} else if (extent_hooks->destroy == NULL) {
+		/* Do nothing. */
+	} else {
+		ehooks_pre_reentrancy(tsdn);
+		extent_hooks->destroy(extent_hooks, addr, size, committed,
+		    ehooks_ind_get(ehooks));
+		ehooks_post_reentrancy(tsdn);
+	}
+}
+
+static inline bool
+ehooks_commit(tsdn_t *tsdn, ehooks_t *ehooks, void *addr, size_t size,
+    size_t offset, size_t length) {
+	extent_hooks_t *extent_hooks = ehooks_get_extent_hooks_ptr(ehooks);
+	bool err;
+	if (extent_hooks == &ehooks_default_extent_hooks) {
+		err = ehooks_default_commit_impl(addr, offset, length);
+	} else if (extent_hooks->commit == NULL) {
+		err = true;
+	} else {
+		ehooks_pre_reentrancy(tsdn);
+		err = extent_hooks->commit(extent_hooks, addr, size,
+		    offset, length, ehooks_ind_get(ehooks));
+		ehooks_post_reentrancy(tsdn);
+	}
+	if (!err) {
+		ehooks_debug_zero_check(addr, size);
+	}
+	return err;
+}
+
+static inline bool
+ehooks_decommit(tsdn_t *tsdn, ehooks_t *ehooks, void *addr, size_t size,
+    size_t offset, size_t length) {
+	extent_hooks_t *extent_hooks = ehooks_get_extent_hooks_ptr(ehooks);
+	if (extent_hooks == &ehooks_default_extent_hooks) {
+		return ehooks_default_decommit_impl(addr, offset, length);
+	} else if (extent_hooks->decommit == NULL) {
+		return true;
+	} else {
+		ehooks_pre_reentrancy(tsdn);
+		bool err = extent_hooks->decommit(extent_hooks, addr, size,
+		    offset, length, ehooks_ind_get(ehooks));
+		ehooks_post_reentrancy(tsdn);
+		return err;
+	}
+}
+
+static inline bool
+ehooks_purge_lazy(tsdn_t *tsdn, ehooks_t *ehooks, void *addr, size_t size,
+    size_t offset, size_t length) {
+	extent_hooks_t *extent_hooks = ehooks_get_extent_hooks_ptr(ehooks);
+#ifdef PAGES_CAN_PURGE_LAZY
+	if (extent_hooks == &ehooks_default_extent_hooks) {
+		return ehooks_default_purge_lazy_impl(addr, offset, length);
+	}
+#endif
+	if (extent_hooks->purge_lazy == NULL) {
+		return true;
+	} else {
+		ehooks_pre_reentrancy(tsdn);
+		bool err = extent_hooks->purge_lazy(extent_hooks, addr, size,
+		    offset, length, ehooks_ind_get(ehooks));
+		ehooks_post_reentrancy(tsdn);
+		return err;
+	}
+}
+
+static inline bool
+ehooks_purge_forced(tsdn_t *tsdn, ehooks_t *ehooks, void *addr, size_t size,
+    size_t offset, size_t length) {
+	extent_hooks_t *extent_hooks = ehooks_get_extent_hooks_ptr(ehooks);
+	/*
+	 * It would be correct to have a ehooks_debug_zero_check call at the end
+	 * of this function; purge_forced is required to zero.  But checking
+	 * would touch the page in question, which may have performance
+	 * consequences (imagine the hooks are using hugepages, with a global
+	 * zero page off).  Even in debug mode, it's usually a good idea to
+	 * avoid cases that can dramatically increase memory consumption.
+	 */
+#ifdef PAGES_CAN_PURGE_FORCED
+	if (extent_hooks == &ehooks_default_extent_hooks) {
+		return ehooks_default_purge_forced_impl(addr, offset, length);
+	}
+#endif
+	if (extent_hooks->purge_forced == NULL) {
+		return true;
+	} else {
+		ehooks_pre_reentrancy(tsdn);
+		bool err = extent_hooks->purge_forced(extent_hooks, addr, size,
+		    offset, length, ehooks_ind_get(ehooks));
+		ehooks_post_reentrancy(tsdn);
+		return err;
+	}
+}
+
+static inline bool
+ehooks_split(tsdn_t *tsdn, ehooks_t *ehooks, void *addr, size_t size,
+    size_t size_a, size_t size_b, bool committed) {
+	extent_hooks_t *extent_hooks = ehooks_get_extent_hooks_ptr(ehooks);
+	if (ehooks_are_default(ehooks)) {
+		return ehooks_default_split_impl();
+	} else if (extent_hooks->split == NULL) {
+		return true;
+	} else {
+		ehooks_pre_reentrancy(tsdn);
+		bool err = extent_hooks->split(extent_hooks, addr, size, size_a,
+		    size_b, committed, ehooks_ind_get(ehooks));
+		ehooks_post_reentrancy(tsdn);
+		return err;
+	}
+}
+
+static inline bool
+ehooks_merge(tsdn_t *tsdn, ehooks_t *ehooks, void *addr_a, size_t size_a,
+    void *addr_b, size_t size_b, bool committed) {
+	extent_hooks_t *extent_hooks = ehooks_get_extent_hooks_ptr(ehooks);
+	if (extent_hooks == &ehooks_default_extent_hooks) {
+		return ehooks_default_merge_impl(tsdn, addr_a, addr_b);
+	} else if (extent_hooks->merge == NULL) {
+		return true;
+	} else {
+		ehooks_pre_reentrancy(tsdn);
+		bool err = extent_hooks->merge(extent_hooks, addr_a, size_a,
+		    addr_b, size_b, committed, ehooks_ind_get(ehooks));
+		ehooks_post_reentrancy(tsdn);
+		return err;
+	}
+}
+
+static inline void
+ehooks_zero(tsdn_t *tsdn, ehooks_t *ehooks, void *addr, size_t size) {
+	extent_hooks_t *extent_hooks = ehooks_get_extent_hooks_ptr(ehooks);
+	if (extent_hooks == &ehooks_default_extent_hooks) {
+		ehooks_default_zero_impl(addr, size);
+	} else {
+		/*
+		 * It would be correct to try using the user-provided purge
+		 * hooks (since they are required to have zeroed the extent if
+		 * they indicate success), but we don't necessarily know their
+		 * cost.  We'll be conservative and use memset.
+		 */
+		memset(addr, 0, size);
+	}
+}
+
+static inline bool
+ehooks_guard(tsdn_t *tsdn, ehooks_t *ehooks, void *guard1, void *guard2) {
+	bool err;
+	extent_hooks_t *extent_hooks = ehooks_get_extent_hooks_ptr(ehooks);
+
+	if (extent_hooks == &ehooks_default_extent_hooks) {
+		ehooks_default_guard_impl(guard1, guard2);
+		err = false;
+	} else {
+		err = true;
+	}
+
+	return err;
+}
+
+static inline bool
+ehooks_unguard(tsdn_t *tsdn, ehooks_t *ehooks, void *guard1, void *guard2) {
+	bool err;
+	extent_hooks_t *extent_hooks = ehooks_get_extent_hooks_ptr(ehooks);
+
+	if (extent_hooks == &ehooks_default_extent_hooks) {
+		ehooks_default_unguard_impl(guard1, guard2);
+		err = false;
+	} else {
+		err = true;
+	}
+
+	return err;
+}
+
+#endif /* JEMALLOC_INTERNAL_EHOOKS_H */
diff --git a/deps/jemalloc/include/jemalloc/internal/emap.h b/deps/jemalloc/include/jemalloc/internal/emap.h
new file mode 100644
index 0000000..847af32
--- /dev/null
+++ b/deps/jemalloc/include/jemalloc/internal/emap.h
@@ -0,0 +1,357 @@
+#ifndef JEMALLOC_INTERNAL_EMAP_H
+#define JEMALLOC_INTERNAL_EMAP_H
+
+#include "jemalloc/internal/base.h"
+#include "jemalloc/internal/rtree.h"
+
+/*
+ * Note: Ends without at semicolon, so that
+ *     EMAP_DECLARE_RTREE_CTX;
+ * in uses will avoid empty-statement warnings.
+ */
+#define EMAP_DECLARE_RTREE_CTX						\
+    rtree_ctx_t rtree_ctx_fallback;					\
+    rtree_ctx_t *rtree_ctx = tsdn_rtree_ctx(tsdn, &rtree_ctx_fallback)
+
+typedef struct emap_s emap_t;
+struct emap_s {
+	rtree_t rtree;
+};
+
+/* Used to pass rtree lookup context down the path. */
+typedef struct emap_alloc_ctx_t emap_alloc_ctx_t;
+struct emap_alloc_ctx_t {
+	szind_t szind;
+	bool slab;
+};
+
+typedef struct emap_full_alloc_ctx_s emap_full_alloc_ctx_t;
+struct emap_full_alloc_ctx_s {
+	szind_t szind;
+	bool slab;
+	edata_t *edata;
+};
+
+bool emap_init(emap_t *emap, base_t *base, bool zeroed);
+
+void emap_remap(tsdn_t *tsdn, emap_t *emap, edata_t *edata, szind_t szind,
+    bool slab);
+
+void emap_update_edata_state(tsdn_t *tsdn, emap_t *emap, edata_t *edata,
+    extent_state_t state);
+
+/*
+ * The two acquire functions below allow accessing neighbor edatas, if it's safe
+ * and valid to do so (i.e. from the same arena, of the same state, etc.).  This
+ * is necessary because the ecache locks are state based, and only protect
+ * edatas with the same state.  Therefore the neighbor edata's state needs to be
+ * verified first, before chasing the edata pointer.  The returned edata will be
+ * in an acquired state, meaning other threads will be prevented from accessing
+ * it, even if technically the edata can still be discovered from the rtree.
+ *
+ * This means, at any moment when holding pointers to edata, either one of the
+ * state based locks is held (and the edatas are all of the protected state), or
+ * the edatas are in an acquired state (e.g. in active or merging state).  The
+ * acquire operation itself (changing the edata to an acquired state) is done
+ * under the state locks.
+ */
+edata_t *emap_try_acquire_edata_neighbor(tsdn_t *tsdn, emap_t *emap,
+    edata_t *edata, extent_pai_t pai, extent_state_t expected_state,
+    bool forward);
+edata_t *emap_try_acquire_edata_neighbor_expand(tsdn_t *tsdn, emap_t *emap,
+    edata_t *edata, extent_pai_t pai, extent_state_t expected_state);
+void emap_release_edata(tsdn_t *tsdn, emap_t *emap, edata_t *edata,
+    extent_state_t new_state);
+
+/*
+ * Associate the given edata with its beginning and end address, setting the
+ * szind and slab info appropriately.
+ * Returns true on error (i.e. resource exhaustion).
+ */
+bool emap_register_boundary(tsdn_t *tsdn, emap_t *emap, edata_t *edata,
+    szind_t szind, bool slab);
+
+/*
+ * Does the same thing, but with the interior of the range, for slab
+ * allocations.
+ *
+ * You might wonder why we don't just have a single emap_register function that
+ * does both depending on the value of 'slab'.  The answer is twofold:
+ * - As a practical matter, in places like the extract->split->commit pathway,
+ *   we defer the interior operation until we're sure that the commit won't fail
+ *   (but we have to register the split boundaries there).
+ * - In general, we're trying to move to a world where the page-specific
+ *   allocator doesn't know as much about how the pages it allocates will be
+ *   used, and passing a 'slab' parameter everywhere makes that more
+ *   complicated.
+ *
+ * Unlike the boundary version, this function can't fail; this is because slabs
+ * can't get big enough to touch a new page that neither of the boundaries
+ * touched, so no allocation is necessary to fill the interior once the boundary
+ * has been touched.
+ */
+void emap_register_interior(tsdn_t *tsdn, emap_t *emap, edata_t *edata,
+    szind_t szind);
+
+void emap_deregister_boundary(tsdn_t *tsdn, emap_t *emap, edata_t *edata);
+void emap_deregister_interior(tsdn_t *tsdn, emap_t *emap, edata_t *edata);
+
+typedef struct emap_prepare_s emap_prepare_t;
+struct emap_prepare_s {
+	rtree_leaf_elm_t *lead_elm_a;
+	rtree_leaf_elm_t *lead_elm_b;
+	rtree_leaf_elm_t *trail_elm_a;
+	rtree_leaf_elm_t *trail_elm_b;
+};
+
+/**
+ * These functions the emap metadata management for merging, splitting, and
+ * reusing extents.  In particular, they set the boundary mappings from
+ * addresses to edatas.  If the result is going to be used as a slab, you
+ * still need to call emap_register_interior on it, though.
+ *
+ * Remap simply changes the szind and slab status of an extent's boundary
+ * mappings.  If the extent is not a slab, it doesn't bother with updating the
+ * end mapping (since lookups only occur in the interior of an extent for
+ * slabs).  Since the szind and slab status only make sense for active extents,
+ * this should only be called while activating or deactivating an extent.
+ *
+ * Split and merge have a "prepare" and a "commit" portion.  The prepare portion
+ * does the operations that can be done without exclusive access to the extent
+ * in question, while the commit variant requires exclusive access to maintain
+ * the emap invariants.  The only function that can fail is emap_split_prepare,
+ * and it returns true on failure (at which point the caller shouldn't commit).
+ *
+ * In all cases, "lead" refers to the lower-addressed extent, and trail to the
+ * higher-addressed one.  It's the caller's responsibility to set the edata
+ * state appropriately.
+ */
+bool emap_split_prepare(tsdn_t *tsdn, emap_t *emap, emap_prepare_t *prepare,
+    edata_t *edata, size_t size_a, edata_t *trail, size_t size_b);
+void emap_split_commit(tsdn_t *tsdn, emap_t *emap, emap_prepare_t *prepare,
+    edata_t *lead, size_t size_a, edata_t *trail, size_t size_b);
+void emap_merge_prepare(tsdn_t *tsdn, emap_t *emap, emap_prepare_t *prepare,
+    edata_t *lead, edata_t *trail);
+void emap_merge_commit(tsdn_t *tsdn, emap_t *emap, emap_prepare_t *prepare,
+    edata_t *lead, edata_t *trail);
+
+/* Assert that the emap's view of the given edata matches the edata's view. */
+void emap_do_assert_mapped(tsdn_t *tsdn, emap_t *emap, edata_t *edata);
+static inline void
+emap_assert_mapped(tsdn_t *tsdn, emap_t *emap, edata_t *edata) {
+	if (config_debug) {
+		emap_do_assert_mapped(tsdn, emap, edata);
+	}
+}
+
+/* Assert that the given edata isn't in the map. */
+void emap_do_assert_not_mapped(tsdn_t *tsdn, emap_t *emap, edata_t *edata);
+static inline void
+emap_assert_not_mapped(tsdn_t *tsdn, emap_t *emap, edata_t *edata) {
+	if (config_debug) {
+		emap_do_assert_not_mapped(tsdn, emap, edata);
+	}
+}
+
+JEMALLOC_ALWAYS_INLINE bool
+emap_edata_in_transition(tsdn_t *tsdn, emap_t *emap, edata_t *edata) {
+	assert(config_debug);
+	emap_assert_mapped(tsdn, emap, edata);
+
+	EMAP_DECLARE_RTREE_CTX;
+	rtree_contents_t contents = rtree_read(tsdn, &emap->rtree, rtree_ctx,
+	    (uintptr_t)edata_base_get(edata));
+
+	return edata_state_in_transition(contents.metadata.state);
+}
+
+JEMALLOC_ALWAYS_INLINE bool
+emap_edata_is_acquired(tsdn_t *tsdn, emap_t *emap, edata_t *edata) {
+	if (!config_debug) {
+		/* For assertions only. */
+		return false;
+	}
+
+	/*
+	 * The edata is considered acquired if no other threads will attempt to
+	 * read / write any fields from it.  This includes a few cases:
+	 *
+	 * 1) edata not hooked into emap yet -- This implies the edata just got
+	 * allocated or initialized.
+	 *
+	 * 2) in an active or transition state -- In both cases, the edata can
+	 * be discovered from the emap, however the state tracked in the rtree
+	 * will prevent other threads from accessing the actual edata.
+	 */
+	EMAP_DECLARE_RTREE_CTX;
+	rtree_leaf_elm_t *elm = rtree_leaf_elm_lookup(tsdn, &emap->rtree,
+	    rtree_ctx, (uintptr_t)edata_base_get(edata), /* dependent */ true,
+	    /* init_missing */ false);
+	if (elm == NULL) {
+		return true;
+	}
+	rtree_contents_t contents = rtree_leaf_elm_read(tsdn, &emap->rtree, elm,
+	    /* dependent */ true);
+	if (contents.edata == NULL ||
+	    contents.metadata.state == extent_state_active ||
+	    edata_state_in_transition(contents.metadata.state)) {
+		return true;
+	}
+
+	return false;
+}
+
+JEMALLOC_ALWAYS_INLINE void
+extent_assert_can_coalesce(const edata_t *inner, const edata_t *outer) {
+	assert(edata_arena_ind_get(inner) == edata_arena_ind_get(outer));
+	assert(edata_pai_get(inner) == edata_pai_get(outer));
+	assert(edata_committed_get(inner) == edata_committed_get(outer));
+	assert(edata_state_get(inner) == extent_state_active);
+	assert(edata_state_get(outer) == extent_state_merging);
+	assert(!edata_guarded_get(inner) && !edata_guarded_get(outer));
+	assert(edata_base_get(inner) == edata_past_get(outer) ||
+	    edata_base_get(outer) == edata_past_get(inner));
+}
+
+JEMALLOC_ALWAYS_INLINE void
+extent_assert_can_expand(const edata_t *original, const edata_t *expand) {
+	assert(edata_arena_ind_get(original) == edata_arena_ind_get(expand));
+	assert(edata_pai_get(original) == edata_pai_get(expand));
+	assert(edata_state_get(original) == extent_state_active);
+	assert(edata_state_get(expand) == extent_state_merging);
+	assert(edata_past_get(original) == edata_base_get(expand));
+}
+
+JEMALLOC_ALWAYS_INLINE edata_t *
+emap_edata_lookup(tsdn_t *tsdn, emap_t *emap, const void *ptr) {
+	EMAP_DECLARE_RTREE_CTX;
+
+	return rtree_read(tsdn, &emap->rtree, rtree_ctx, (uintptr_t)ptr).edata;
+}
+
+/* Fills in alloc_ctx with the info in the map. */
+JEMALLOC_ALWAYS_INLINE void
+emap_alloc_ctx_lookup(tsdn_t *tsdn, emap_t *emap, const void *ptr,
+    emap_alloc_ctx_t *alloc_ctx) {
+	EMAP_DECLARE_RTREE_CTX;
+
+	rtree_metadata_t metadata = rtree_metadata_read(tsdn, &emap->rtree,
+	    rtree_ctx, (uintptr_t)ptr);
+	alloc_ctx->szind = metadata.szind;
+	alloc_ctx->slab = metadata.slab;
+}
+
+/* The pointer must be mapped. */
+JEMALLOC_ALWAYS_INLINE void
+emap_full_alloc_ctx_lookup(tsdn_t *tsdn, emap_t *emap, const void *ptr,
+    emap_full_alloc_ctx_t *full_alloc_ctx) {
+	EMAP_DECLARE_RTREE_CTX;
+
+	rtree_contents_t contents = rtree_read(tsdn, &emap->rtree, rtree_ctx,
+	    (uintptr_t)ptr);
+	full_alloc_ctx->edata = contents.edata;
+	full_alloc_ctx->szind = contents.metadata.szind;
+	full_alloc_ctx->slab = contents.metadata.slab;
+}
+
+/*
+ * The pointer is allowed to not be mapped.
+ *
+ * Returns true when the pointer is not present.
+ */
+JEMALLOC_ALWAYS_INLINE bool
+emap_full_alloc_ctx_try_lookup(tsdn_t *tsdn, emap_t *emap, const void *ptr,
+    emap_full_alloc_ctx_t *full_alloc_ctx) {
+	EMAP_DECLARE_RTREE_CTX;
+
+	rtree_contents_t contents;
+	bool err = rtree_read_independent(tsdn, &emap->rtree, rtree_ctx,
+	    (uintptr_t)ptr, &contents);
+	if (err) {
+		return true;
+	}
+	full_alloc_ctx->edata = contents.edata;
+	full_alloc_ctx->szind = contents.metadata.szind;
+	full_alloc_ctx->slab = contents.metadata.slab;
+	return false;
+}
+
+/*
+ * Only used on the fastpath of free.  Returns true when cannot be fulfilled by
+ * fast path, e.g. when the metadata key is not cached.
+ */
+JEMALLOC_ALWAYS_INLINE bool
+emap_alloc_ctx_try_lookup_fast(tsd_t *tsd, emap_t *emap, const void *ptr,
+    emap_alloc_ctx_t *alloc_ctx) {
+	/* Use the unsafe getter since this may gets called during exit. */
+	rtree_ctx_t *rtree_ctx = tsd_rtree_ctxp_get_unsafe(tsd);
+
+	rtree_metadata_t metadata;
+	bool err = rtree_metadata_try_read_fast(tsd_tsdn(tsd), &emap->rtree,
+	    rtree_ctx, (uintptr_t)ptr, &metadata);
+	if (err) {
+		return true;
+	}
+	alloc_ctx->szind = metadata.szind;
+	alloc_ctx->slab = metadata.slab;
+	return false;
+}
+
+/*
+ * We want to do batch lookups out of the cache bins, which use
+ * cache_bin_ptr_array_get to access the i'th element of the bin (since they
+ * invert usual ordering in deciding what to flush).  This lets the emap avoid
+ * caring about its caller's ordering.
+ */
+typedef const void *(*emap_ptr_getter)(void *ctx, size_t ind);
+/*
+ * This allows size-checking assertions, which we can only do while we're in the
+ * process of edata lookups.
+ */
+typedef void (*emap_metadata_visitor)(void *ctx, emap_full_alloc_ctx_t *alloc_ctx);
+
+typedef union emap_batch_lookup_result_u emap_batch_lookup_result_t;
+union emap_batch_lookup_result_u {
+	edata_t *edata;
+	rtree_leaf_elm_t *rtree_leaf;
+};
+
+JEMALLOC_ALWAYS_INLINE void
+emap_edata_lookup_batch(tsd_t *tsd, emap_t *emap, size_t nptrs,
+    emap_ptr_getter ptr_getter, void *ptr_getter_ctx,
+    emap_metadata_visitor metadata_visitor, void *metadata_visitor_ctx,
+    emap_batch_lookup_result_t *result) {
+	/* Avoids null-checking tsdn in the loop below. */
+	util_assume(tsd != NULL);
+	rtree_ctx_t *rtree_ctx = tsd_rtree_ctxp_get(tsd);
+
+	for (size_t i = 0; i < nptrs; i++) {
+		const void *ptr = ptr_getter(ptr_getter_ctx, i);
+		/*
+		 * Reuse the edatas array as a temp buffer, lying a little about
+		 * the types.
+		 */
+		result[i].rtree_leaf = rtree_leaf_elm_lookup(tsd_tsdn(tsd),
+		    &emap->rtree, rtree_ctx, (uintptr_t)ptr,
+		    /* dependent */ true, /* init_missing */ false);
+	}
+
+	for (size_t i = 0; i < nptrs; i++) {
+		rtree_leaf_elm_t *elm = result[i].rtree_leaf;
+		rtree_contents_t contents = rtree_leaf_elm_read(tsd_tsdn(tsd),
+		    &emap->rtree, elm, /* dependent */ true);
+		result[i].edata = contents.edata;
+		emap_full_alloc_ctx_t alloc_ctx;
+		/*
+		 * Not all these fields are read in practice by the metadata
+		 * visitor.  But the compiler can easily optimize away the ones
+		 * that aren't, so no sense in being incomplete.
+		 */
+		alloc_ctx.szind = contents.metadata.szind;
+		alloc_ctx.slab = contents.metadata.slab;
+		alloc_ctx.edata = contents.edata;
+		metadata_visitor(metadata_visitor_ctx, &alloc_ctx);
+	}
+}
+
+#endif /* JEMALLOC_INTERNAL_EMAP_H */
diff --git a/deps/jemalloc/include/jemalloc/internal/emitter.h b/deps/jemalloc/include/jemalloc/internal/emitter.h
new file mode 100644
index 0000000..9482f68
--- /dev/null
+++ b/deps/jemalloc/include/jemalloc/internal/emitter.h
@@ -0,0 +1,510 @@
+#ifndef JEMALLOC_INTERNAL_EMITTER_H
+#define JEMALLOC_INTERNAL_EMITTER_H
+
+#include "jemalloc/internal/ql.h"
+
+typedef enum emitter_output_e emitter_output_t;
+enum emitter_output_e {
+	emitter_output_json,
+	emitter_output_json_compact,
+	emitter_output_table
+};
+
+typedef enum emitter_justify_e emitter_justify_t;
+enum emitter_justify_e {
+	emitter_justify_left,
+	emitter_justify_right,
+	/* Not for users; just to pass to internal functions. */
+	emitter_justify_none
+};
+
+typedef enum emitter_type_e emitter_type_t;
+enum emitter_type_e {
+	emitter_type_bool,
+	emitter_type_int,
+	emitter_type_int64,
+	emitter_type_unsigned,
+	emitter_type_uint32,
+	emitter_type_uint64,
+	emitter_type_size,
+	emitter_type_ssize,
+	emitter_type_string,
+	/*
+	 * A title is a column title in a table; it's just a string, but it's
+	 * not quoted.
+	 */
+	emitter_type_title,
+};
+
+typedef struct emitter_col_s emitter_col_t;
+struct emitter_col_s {
+	/* Filled in by the user. */
+	emitter_justify_t justify;
+	int width;
+	emitter_type_t type;
+	union {
+		bool bool_val;
+		int int_val;
+		unsigned unsigned_val;
+		uint32_t uint32_val;
+		uint32_t uint32_t_val;
+		uint64_t uint64_val;
+		uint64_t uint64_t_val;
+		size_t size_val;
+		ssize_t ssize_val;
+		const char *str_val;
+	};
+
+	/* Filled in by initialization. */
+	ql_elm(emitter_col_t) link;
+};
+
+typedef struct emitter_row_s emitter_row_t;
+struct emitter_row_s {
+	ql_head(emitter_col_t) cols;
+};
+
+typedef struct emitter_s emitter_t;
+struct emitter_s {
+	emitter_output_t output;
+	/* The output information. */
+	write_cb_t *write_cb;
+	void *cbopaque;
+	int nesting_depth;
+	/* True if we've already emitted a value at the given depth. */
+	bool item_at_depth;
+	/* True if we emitted a key and will emit corresponding value next. */
+	bool emitted_key;
+};
+
+static inline bool
+emitter_outputs_json(emitter_t *emitter) {
+	return emitter->output == emitter_output_json ||
+	    emitter->output == emitter_output_json_compact;
+}
+
+/* Internal convenience function.  Write to the emitter the given string. */
+JEMALLOC_FORMAT_PRINTF(2, 3)
+static inline void
+emitter_printf(emitter_t *emitter, const char *format, ...) {
+	va_list ap;
+
+	va_start(ap, format);
+	malloc_vcprintf(emitter->write_cb, emitter->cbopaque, format, ap);
+	va_end(ap);
+}
+
+static inline const char * JEMALLOC_FORMAT_ARG(3)
+emitter_gen_fmt(char *out_fmt, size_t out_size, const char *fmt_specifier,
+    emitter_justify_t justify, int width) {
+	size_t written;
+	fmt_specifier++;
+	if (justify == emitter_justify_none) {
+		written = malloc_snprintf(out_fmt, out_size,
+		    "%%%s", fmt_specifier);
+	} else if (justify == emitter_justify_left) {
+		written = malloc_snprintf(out_fmt, out_size,
+		    "%%-%d%s", width, fmt_specifier);
+	} else {
+		written = malloc_snprintf(out_fmt, out_size,
+		    "%%%d%s", width, fmt_specifier);
+	}
+	/* Only happens in case of bad format string, which *we* choose. */
+	assert(written <  out_size);
+	return out_fmt;
+}
+
+/*
+ * Internal.  Emit the given value type in the relevant encoding (so that the
+ * bool true gets mapped to json "true", but the string "true" gets mapped to
+ * json "\"true\"", for instance.
+ *
+ * Width is ignored if justify is emitter_justify_none.
+ */
+static inline void
+emitter_print_value(emitter_t *emitter, emitter_justify_t justify, int width,
+    emitter_type_t value_type, const void *value) {
+	size_t str_written;
+#define BUF_SIZE 256
+#define FMT_SIZE 10
+	/*
+	 * We dynamically generate a format string to emit, to let us use the
+	 * snprintf machinery.  This is kinda hacky, but gets the job done
+	 * quickly without having to think about the various snprintf edge
+	 * cases.
+	 */
+	char fmt[FMT_SIZE];
+	char buf[BUF_SIZE];
+
+#define EMIT_SIMPLE(type, format)					\
+	emitter_printf(emitter,						\
+	    emitter_gen_fmt(fmt, FMT_SIZE, format, justify, width),	\
+	    *(const type *)value);
+
+	switch (value_type) {
+	case emitter_type_bool:
+		emitter_printf(emitter,
+		    emitter_gen_fmt(fmt, FMT_SIZE, "%s", justify, width),
+		    *(const bool *)value ?  "true" : "false");
+		break;
+	case emitter_type_int:
+		EMIT_SIMPLE(int, "%d")
+		break;
+	case emitter_type_int64:
+		EMIT_SIMPLE(int64_t, "%" FMTd64)
+		break;
+	case emitter_type_unsigned:
+		EMIT_SIMPLE(unsigned, "%u")
+		break;
+	case emitter_type_ssize:
+		EMIT_SIMPLE(ssize_t, "%zd")
+		break;
+	case emitter_type_size:
+		EMIT_SIMPLE(size_t, "%zu")
+		break;
+	case emitter_type_string:
+		str_written = malloc_snprintf(buf, BUF_SIZE, "\"%s\"",
+		    *(const char *const *)value);
+		/*
+		 * We control the strings we output; we shouldn't get anything
+		 * anywhere near the fmt size.
+		 */
+		assert(str_written < BUF_SIZE);
+		emitter_printf(emitter,
+		    emitter_gen_fmt(fmt, FMT_SIZE, "%s", justify, width), buf);
+		break;
+	case emitter_type_uint32:
+		EMIT_SIMPLE(uint32_t, "%" FMTu32)
+		break;
+	case emitter_type_uint64:
+		EMIT_SIMPLE(uint64_t, "%" FMTu64)
+		break;
+	case emitter_type_title:
+		EMIT_SIMPLE(char *const, "%s");
+		break;
+	default:
+		unreachable();
+	}
+#undef BUF_SIZE
+#undef FMT_SIZE
+}
+
+
+/* Internal functions.  In json mode, tracks nesting state. */
+static inline void
+emitter_nest_inc(emitter_t *emitter) {
+	emitter->nesting_depth++;
+	emitter->item_at_depth = false;
+}
+
+static inline void
+emitter_nest_dec(emitter_t *emitter) {
+	emitter->nesting_depth--;
+	emitter->item_at_depth = true;
+}
+
+static inline void
+emitter_indent(emitter_t *emitter) {
+	int amount = emitter->nesting_depth;
+	const char *indent_str;
+	assert(emitter->output != emitter_output_json_compact);
+	if (emitter->output == emitter_output_json) {
+		indent_str = "\t";
+	} else {
+		amount *= 2;
+		indent_str = " ";
+	}
+	for (int i = 0; i < amount; i++) {
+		emitter_printf(emitter, "%s", indent_str);
+	}
+}
+
+static inline void
+emitter_json_key_prefix(emitter_t *emitter) {
+	assert(emitter_outputs_json(emitter));
+	if (emitter->emitted_key) {
+		emitter->emitted_key = false;
+		return;
+	}
+	if (emitter->item_at_depth) {
+		emitter_printf(emitter, ",");
+	}
+	if (emitter->output != emitter_output_json_compact) {
+		emitter_printf(emitter, "\n");
+		emitter_indent(emitter);
+	}
+}
+
+/******************************************************************************/
+/* Public functions for emitter_t. */
+
+static inline void
+emitter_init(emitter_t *emitter, emitter_output_t emitter_output,
+    write_cb_t *write_cb, void *cbopaque) {
+	emitter->output = emitter_output;
+	emitter->write_cb = write_cb;
+	emitter->cbopaque = cbopaque;
+	emitter->item_at_depth = false;
+	emitter->emitted_key = false;
+	emitter->nesting_depth = 0;
+}
+
+/******************************************************************************/
+/* JSON public API. */
+
+/*
+ * Emits a key (e.g. as appears in an object). The next json entity emitted will
+ * be the corresponding value.
+ */
+static inline void
+emitter_json_key(emitter_t *emitter, const char *json_key) {
+	if (emitter_outputs_json(emitter)) {
+		emitter_json_key_prefix(emitter);
+		emitter_printf(emitter, "\"%s\":%s", json_key,
+		    emitter->output == emitter_output_json_compact ? "" : " ");
+		emitter->emitted_key = true;
+	}
+}
+
+static inline void
+emitter_json_value(emitter_t *emitter, emitter_type_t value_type,
+    const void *value) {
+	if (emitter_outputs_json(emitter)) {
+		emitter_json_key_prefix(emitter);
+		emitter_print_value(emitter, emitter_justify_none, -1,
+		    value_type, value);
+		emitter->item_at_depth = true;
+	}
+}
+
+/* Shorthand for calling emitter_json_key and then emitter_json_value. */
+static inline void
+emitter_json_kv(emitter_t *emitter, const char *json_key,
+    emitter_type_t value_type, const void *value) {
+	emitter_json_key(emitter, json_key);
+	emitter_json_value(emitter, value_type, value);
+}
+
+static inline void
+emitter_json_array_begin(emitter_t *emitter) {
+	if (emitter_outputs_json(emitter)) {
+		emitter_json_key_prefix(emitter);
+		emitter_printf(emitter, "[");
+		emitter_nest_inc(emitter);
+	}
+}
+
+/* Shorthand for calling emitter_json_key and then emitter_json_array_begin. */
+static inline void
+emitter_json_array_kv_begin(emitter_t *emitter, const char *json_key) {
+	emitter_json_key(emitter, json_key);
+	emitter_json_array_begin(emitter);
+}
+
+static inline void
+emitter_json_array_end(emitter_t *emitter) {
+	if (emitter_outputs_json(emitter)) {
+		assert(emitter->nesting_depth > 0);
+		emitter_nest_dec(emitter);
+		if (emitter->output != emitter_output_json_compact) {
+			emitter_printf(emitter, "\n");
+			emitter_indent(emitter);
+		}
+		emitter_printf(emitter, "]");
+	}
+}
+
+static inline void
+emitter_json_object_begin(emitter_t *emitter) {
+	if (emitter_outputs_json(emitter)) {
+		emitter_json_key_prefix(emitter);
+		emitter_printf(emitter, "{");
+		emitter_nest_inc(emitter);
+	}
+}
+
+/* Shorthand for calling emitter_json_key and then emitter_json_object_begin. */
+static inline void
+emitter_json_object_kv_begin(emitter_t *emitter, const char *json_key) {
+	emitter_json_key(emitter, json_key);
+	emitter_json_object_begin(emitter);
+}
+
+static inline void
+emitter_json_object_end(emitter_t *emitter) {
+	if (emitter_outputs_json(emitter)) {
+		assert(emitter->nesting_depth > 0);
+		emitter_nest_dec(emitter);
+		if (emitter->output != emitter_output_json_compact) {
+			emitter_printf(emitter, "\n");
+			emitter_indent(emitter);
+		}
+		emitter_printf(emitter, "}");
+	}
+}
+
+
+/******************************************************************************/
+/* Table public API. */
+
+static inline void
+emitter_table_dict_begin(emitter_t *emitter, const char *table_key) {
+	if (emitter->output == emitter_output_table) {
+		emitter_indent(emitter);
+		emitter_printf(emitter, "%s\n", table_key);
+		emitter_nest_inc(emitter);
+	}
+}
+
+static inline void
+emitter_table_dict_end(emitter_t *emitter) {
+	if (emitter->output == emitter_output_table) {
+		emitter_nest_dec(emitter);
+	}
+}
+
+static inline void
+emitter_table_kv_note(emitter_t *emitter, const char *table_key,
+    emitter_type_t value_type, const void *value,
+    const char *table_note_key, emitter_type_t table_note_value_type,
+    const void *table_note_value) {
+	if (emitter->output == emitter_output_table) {
+		emitter_indent(emitter);
+		emitter_printf(emitter, "%s: ", table_key);
+		emitter_print_value(emitter, emitter_justify_none, -1,
+		    value_type, value);
+		if (table_note_key != NULL) {
+			emitter_printf(emitter, " (%s: ", table_note_key);
+			emitter_print_value(emitter, emitter_justify_none, -1,
+			    table_note_value_type, table_note_value);
+			emitter_printf(emitter, ")");
+		}
+		emitter_printf(emitter, "\n");
+	}
+	emitter->item_at_depth = true;
+}
+
+static inline void
+emitter_table_kv(emitter_t *emitter, const char *table_key,
+    emitter_type_t value_type, const void *value) {
+	emitter_table_kv_note(emitter, table_key, value_type, value, NULL,
+	    emitter_type_bool, NULL);
+}
+
+
+/* Write to the emitter the given string, but only in table mode. */
+JEMALLOC_FORMAT_PRINTF(2, 3)
+static inline void
+emitter_table_printf(emitter_t *emitter, const char *format, ...) {
+	if (emitter->output == emitter_output_table) {
+		va_list ap;
+		va_start(ap, format);
+		malloc_vcprintf(emitter->write_cb, emitter->cbopaque, format, ap);
+		va_end(ap);
+	}
+}
+
+static inline void
+emitter_table_row(emitter_t *emitter, emitter_row_t *row) {
+	if (emitter->output != emitter_output_table) {
+		return;
+	}
+	emitter_col_t *col;
+	ql_foreach(col, &row->cols, link) {
+		emitter_print_value(emitter, col->justify, col->width,
+		    col->type, (const void *)&col->bool_val);
+	}
+	emitter_table_printf(emitter, "\n");
+}
+
+static inline void
+emitter_row_init(emitter_row_t *row) {
+	ql_new(&row->cols);
+}
+
+static inline void
+emitter_col_init(emitter_col_t *col, emitter_row_t *row) {
+	ql_elm_new(col, link);
+	ql_tail_insert(&row->cols, col, link);
+}
+
+
+/******************************************************************************/
+/*
+ * Generalized public API. Emits using either JSON or table, according to
+ * settings in the emitter_t. */
+
+/*
+ * Note emits a different kv pair as well, but only in table mode.  Omits the
+ * note if table_note_key is NULL.
+ */
+static inline void
+emitter_kv_note(emitter_t *emitter, const char *json_key, const char *table_key,
+    emitter_type_t value_type, const void *value,
+    const char *table_note_key, emitter_type_t table_note_value_type,
+    const void *table_note_value) {
+	if (emitter_outputs_json(emitter)) {
+		emitter_json_key(emitter, json_key);
+		emitter_json_value(emitter, value_type, value);
+	} else {
+		emitter_table_kv_note(emitter, table_key, value_type, value,
+		    table_note_key, table_note_value_type, table_note_value);
+	}
+	emitter->item_at_depth = true;
+}
+
+static inline void
+emitter_kv(emitter_t *emitter, const char *json_key, const char *table_key,
+    emitter_type_t value_type, const void *value) {
+	emitter_kv_note(emitter, json_key, table_key, value_type, value, NULL,
+	    emitter_type_bool, NULL);
+}
+
+static inline void
+emitter_dict_begin(emitter_t *emitter, const char *json_key,
+    const char *table_header) {
+	if (emitter_outputs_json(emitter)) {
+		emitter_json_key(emitter, json_key);
+		emitter_json_object_begin(emitter);
+	} else {
+		emitter_table_dict_begin(emitter, table_header);
+	}
+}
+
+static inline void
+emitter_dict_end(emitter_t *emitter) {
+	if (emitter_outputs_json(emitter)) {
+		emitter_json_object_end(emitter);
+	} else {
+		emitter_table_dict_end(emitter);
+	}
+}
+
+static inline void
+emitter_begin(emitter_t *emitter) {
+	if (emitter_outputs_json(emitter)) {
+		assert(emitter->nesting_depth == 0);
+		emitter_printf(emitter, "{");
+		emitter_nest_inc(emitter);
+	} else {
+		/*
+		 * This guarantees that we always call write_cb at least once.
+		 * This is useful if some invariant is established by each call
+		 * to write_cb, but doesn't hold initially: e.g., some buffer
+		 * holds a null-terminated string.
+		 */
+		emitter_printf(emitter, "%s", "");
+	}
+}
+
+static inline void
+emitter_end(emitter_t *emitter) {
+	if (emitter_outputs_json(emitter)) {
+		assert(emitter->nesting_depth == 1);
+		emitter_nest_dec(emitter);
+		emitter_printf(emitter, "%s", emitter->output ==
+		    emitter_output_json_compact ? "}" : "\n}\n");
+	}
+}
+
+#endif /* JEMALLOC_INTERNAL_EMITTER_H */
diff --git a/deps/jemalloc/include/jemalloc/internal/eset.h b/deps/jemalloc/include/jemalloc/internal/eset.h
new file mode 100644
index 0000000..4f689b4
--- /dev/null
+++ b/deps/jemalloc/include/jemalloc/internal/eset.h
@@ -0,0 +1,77 @@
+#ifndef JEMALLOC_INTERNAL_ESET_H
+#define JEMALLOC_INTERNAL_ESET_H
+
+#include "jemalloc/internal/atomic.h"
+#include "jemalloc/internal/fb.h"
+#include "jemalloc/internal/edata.h"
+#include "jemalloc/internal/mutex.h"
+
+/*
+ * An eset ("extent set") is a quantized collection of extents, with built-in
+ * LRU queue.
+ *
+ * This class is not thread-safe; synchronization must be done externally if
+ * there are mutating operations.  One exception is the stats counters, which
+ * may be read without any locking.
+ */
+
+typedef struct eset_bin_s eset_bin_t;
+struct eset_bin_s {
+	edata_heap_t heap;
+	/*
+	 * We do first-fit across multiple size classes.  If we compared against
+	 * the min element in each heap directly, we'd take a cache miss per
+	 * extent we looked at.  If we co-locate the edata summaries, we only
+	 * take a miss on the edata we're actually going to return (which is
+	 * inevitable anyways).
+	 */
+	edata_cmp_summary_t heap_min;
+};
+
+typedef struct eset_bin_stats_s eset_bin_stats_t;
+struct eset_bin_stats_s {
+	atomic_zu_t nextents;
+	atomic_zu_t nbytes;
+};
+
+typedef struct eset_s eset_t;
+struct eset_s {
+	/* Bitmap for which set bits correspond to non-empty heaps. */
+	fb_group_t bitmap[FB_NGROUPS(SC_NPSIZES + 1)];
+
+	/* Quantized per size class heaps of extents. */
+	eset_bin_t bins[SC_NPSIZES + 1];
+
+	eset_bin_stats_t bin_stats[SC_NPSIZES + 1];
+
+	/* LRU of all extents in heaps. */
+	edata_list_inactive_t lru;
+
+	/* Page sum for all extents in heaps. */
+	atomic_zu_t npages;
+
+	/*
+	 * A duplication of the data in the containing ecache.  We use this only
+	 * for assertions on the states of the passed-in extents.
+	 */
+	extent_state_t state;
+};
+
+void eset_init(eset_t *eset, extent_state_t state);
+
+size_t eset_npages_get(eset_t *eset);
+/* Get the number of extents in the given page size index. */
+size_t eset_nextents_get(eset_t *eset, pszind_t ind);
+/* Get the sum total bytes of the extents in the given page size index. */
+size_t eset_nbytes_get(eset_t *eset, pszind_t ind);
+
+void eset_insert(eset_t *eset, edata_t *edata);
+void eset_remove(eset_t *eset, edata_t *edata);
+/*
+ * Select an extent from this eset of the given size and alignment.  Returns
+ * null if no such item could be found.
+ */
+edata_t *eset_fit(eset_t *eset, size_t esize, size_t alignment, bool exact_only,
+    unsigned lg_max_fit);
+
+#endif /* JEMALLOC_INTERNAL_ESET_H */
diff --git a/deps/jemalloc/include/jemalloc/internal/exp_grow.h b/deps/jemalloc/include/jemalloc/internal/exp_grow.h
new file mode 100644
index 0000000..8566b8a
--- /dev/null
+++ b/deps/jemalloc/include/jemalloc/internal/exp_grow.h
@@ -0,0 +1,50 @@
+#ifndef JEMALLOC_INTERNAL_EXP_GROW_H
+#define JEMALLOC_INTERNAL_EXP_GROW_H
+
+typedef struct exp_grow_s exp_grow_t;
+struct exp_grow_s {
+	/*
+	 * Next extent size class in a growing series to use when satisfying a
+	 * request via the extent hooks (only if opt_retain).  This limits the
+	 * number of disjoint virtual memory ranges so that extent merging can
+	 * be effective even if multiple arenas' extent allocation requests are
+	 * highly interleaved.
+	 *
+	 * retain_grow_limit is the max allowed size ind to expand (unless the
+	 * required size is greater).  Default is no limit, and controlled
+	 * through mallctl only.
+	 */
+	pszind_t next;
+	pszind_t limit;
+};
+
+static inline bool
+exp_grow_size_prepare(exp_grow_t *exp_grow, size_t alloc_size_min,
+    size_t *r_alloc_size, pszind_t *r_skip) {
+	*r_skip = 0;
+	*r_alloc_size = sz_pind2sz(exp_grow->next + *r_skip);
+	while (*r_alloc_size < alloc_size_min) {
+		(*r_skip)++;
+		if (exp_grow->next + *r_skip  >=
+		    sz_psz2ind(SC_LARGE_MAXCLASS)) {
+			/* Outside legal range. */
+			return true;
+		}
+		*r_alloc_size = sz_pind2sz(exp_grow->next + *r_skip);
+	}
+	return false;
+}
+
+static inline void
+exp_grow_size_commit(exp_grow_t *exp_grow, pszind_t skip) {
+	if (exp_grow->next + skip + 1 <= exp_grow->limit) {
+		exp_grow->next += skip + 1;
+	} else {
+		exp_grow->next = exp_grow->limit;
+	}
+
+}
+
+void exp_grow_init(exp_grow_t *exp_grow);
+
+#endif /* JEMALLOC_INTERNAL_EXP_GROW_H */
diff --git a/deps/jemalloc/include/jemalloc/internal/extent.h b/deps/jemalloc/include/jemalloc/internal/extent.h
new file mode 100644
index 0000000..1d51d41
--- /dev/null
+++ b/deps/jemalloc/include/jemalloc/internal/extent.h
@@ -0,0 +1,137 @@
+#ifndef JEMALLOC_INTERNAL_EXTENT_H
+#define JEMALLOC_INTERNAL_EXTENT_H
+
+#include "jemalloc/internal/ecache.h"
+#include "jemalloc/internal/ehooks.h"
+#include "jemalloc/internal/ph.h"
+#include "jemalloc/internal/rtree.h"
+
+/*
+ * This module contains the page-level allocator.  It chooses the addresses that
+ * allocations requested by other modules will inhabit, and updates the global
+ * metadata to reflect allocation/deallocation/purging decisions.
+ */
+
+/*
+ * When reuse (and split) an active extent, (1U << opt_lg_extent_max_active_fit)
+ * is the max ratio between the size of the active extent and the new extent.
+ */
+#define LG_EXTENT_MAX_ACTIVE_FIT_DEFAULT 6
+extern size_t opt_lg_extent_max_active_fit;
+
+edata_t *ecache_alloc(tsdn_t *tsdn, pac_t *pac, ehooks_t *ehooks,
+    ecache_t *ecache, edata_t *expand_edata, size_t size, size_t alignment,
+    bool zero, bool guarded);
+edata_t *ecache_alloc_grow(tsdn_t *tsdn, pac_t *pac, ehooks_t *ehooks,
+    ecache_t *ecache, edata_t *expand_edata, size_t size, size_t alignment,
+    bool zero, bool guarded);
+void ecache_dalloc(tsdn_t *tsdn, pac_t *pac, ehooks_t *ehooks,
+    ecache_t *ecache, edata_t *edata);
+edata_t *ecache_evict(tsdn_t *tsdn, pac_t *pac, ehooks_t *ehooks,
+    ecache_t *ecache, size_t npages_min);
+
+void extent_gdump_add(tsdn_t *tsdn, const edata_t *edata);
+void extent_record(tsdn_t *tsdn, pac_t *pac, ehooks_t *ehooks, ecache_t *ecache,
+    edata_t *edata);
+void extent_dalloc_gap(tsdn_t *tsdn, pac_t *pac, ehooks_t *ehooks,
+    edata_t *edata);
+edata_t *extent_alloc_wrapper(tsdn_t *tsdn, pac_t *pac, ehooks_t *ehooks,
+    void *new_addr, size_t size, size_t alignment, bool zero, bool *commit,
+    bool growing_retained);
+void extent_dalloc_wrapper(tsdn_t *tsdn, pac_t *pac, ehooks_t *ehooks,
+    edata_t *edata);
+void extent_destroy_wrapper(tsdn_t *tsdn, pac_t *pac, ehooks_t *ehooks,
+    edata_t *edata);
+bool extent_commit_wrapper(tsdn_t *tsdn, ehooks_t *ehooks, edata_t *edata,
+    size_t offset, size_t length);
+bool extent_decommit_wrapper(tsdn_t *tsdn, ehooks_t *ehooks, edata_t *edata,
+    size_t offset, size_t length);
+bool extent_purge_lazy_wrapper(tsdn_t *tsdn, ehooks_t *ehooks, edata_t *edata,
+    size_t offset, size_t length);
+bool extent_purge_forced_wrapper(tsdn_t *tsdn, ehooks_t *ehooks, edata_t *edata,
+    size_t offset, size_t length);
+edata_t *extent_split_wrapper(tsdn_t *tsdn, pac_t *pac,
+    ehooks_t *ehooks, edata_t *edata, size_t size_a, size_t size_b,
+    bool holding_core_locks);
+bool extent_merge_wrapper(tsdn_t *tsdn, pac_t *pac, ehooks_t *ehooks,
+    edata_t *a, edata_t *b);
+bool extent_commit_zero(tsdn_t *tsdn, ehooks_t *ehooks, edata_t *edata,
+    bool commit, bool zero, bool growing_retained);
+size_t extent_sn_next(pac_t *pac);
+bool extent_boot(void);
+
+JEMALLOC_ALWAYS_INLINE bool
+extent_neighbor_head_state_mergeable(bool edata_is_head,
+    bool neighbor_is_head, bool forward) {
+	/*
+	 * Head states checking: disallow merging if the higher addr extent is a
+	 * head extent.  This helps preserve first-fit, and more importantly
+	 * makes sure no merge across arenas.
+	 */
+	if (forward) {
+		if (neighbor_is_head) {
+			return false;
+		}
+	} else {
+		if (edata_is_head) {
+			return false;
+		}
+	}
+	return true;
+}
+
+JEMALLOC_ALWAYS_INLINE bool
+extent_can_acquire_neighbor(edata_t *edata, rtree_contents_t contents,
+    extent_pai_t pai, extent_state_t expected_state, bool forward,
+    bool expanding) {
+	edata_t *neighbor = contents.edata;
+	if (neighbor == NULL) {
+		return false;
+	}
+	/* It's not safe to access *neighbor yet; must verify states first. */
+	bool neighbor_is_head = contents.metadata.is_head;
+	if (!extent_neighbor_head_state_mergeable(edata_is_head_get(edata),
+	    neighbor_is_head, forward)) {
+		return false;
+	}
+	extent_state_t neighbor_state = contents.metadata.state;
+	if (pai == EXTENT_PAI_PAC) {
+		if (neighbor_state != expected_state) {
+			return false;
+		}
+		/* From this point, it's safe to access *neighbor. */
+		if (!expanding && (edata_committed_get(edata) !=
+		    edata_committed_get(neighbor))) {
+			/*
+			 * Some platforms (e.g. Windows) require an explicit
+			 * commit step (and writing to uncommitted memory is not
+			 * allowed).
+			 */
+			return false;
+		}
+	} else {
+		if (neighbor_state == extent_state_active) {
+			return false;
+		}
+		/* From this point, it's safe to access *neighbor. */
+	}
+
+	assert(edata_pai_get(edata) == pai);
+	if (edata_pai_get(neighbor) != pai) {
+		return false;
+	}
+	if (opt_retain) {
+		assert(edata_arena_ind_get(edata) ==
+		    edata_arena_ind_get(neighbor));
+	} else {
+		if (edata_arena_ind_get(edata) !=
+		    edata_arena_ind_get(neighbor)) {
+			return false;
+		}
+	}
+	assert(!edata_guarded_get(edata) && !edata_guarded_get(neighbor));
+
+	return true;
+}
+
+#endif /* JEMALLOC_INTERNAL_EXTENT_H */
diff --git a/deps/jemalloc/include/jemalloc/internal/extent_dss.h b/deps/jemalloc/include/jemalloc/internal/extent_dss.h
new file mode 100644
index 0000000..e8f02ce
--- /dev/null
+++ b/deps/jemalloc/include/jemalloc/internal/extent_dss.h
@@ -0,0 +1,26 @@
+#ifndef JEMALLOC_INTERNAL_EXTENT_DSS_H
+#define JEMALLOC_INTERNAL_EXTENT_DSS_H
+
+typedef enum {
+	dss_prec_disabled  = 0,
+	dss_prec_primary   = 1,
+	dss_prec_secondary = 2,
+
+	dss_prec_limit     = 3
+} dss_prec_t;
+#define DSS_PREC_DEFAULT dss_prec_secondary
+#define DSS_DEFAULT "secondary"
+
+extern const char *dss_prec_names[];
+
+extern const char *opt_dss;
+
+dss_prec_t extent_dss_prec_get(void);
+bool extent_dss_prec_set(dss_prec_t dss_prec);
+void *extent_alloc_dss(tsdn_t *tsdn, arena_t *arena, void *new_addr,
+    size_t size, size_t alignment, bool *zero, bool *commit);
+bool extent_in_dss(void *addr);
+bool extent_dss_mergeable(void *addr_a, void *addr_b);
+void extent_dss_boot(void);
+
+#endif /* JEMALLOC_INTERNAL_EXTENT_DSS_H */
diff --git a/deps/jemalloc/include/jemalloc/internal/extent_mmap.h b/deps/jemalloc/include/jemalloc/internal/extent_mmap.h
new file mode 100644
index 0000000..55f17ee
--- /dev/null
+++ b/deps/jemalloc/include/jemalloc/internal/extent_mmap.h
@@ -0,0 +1,10 @@
+#ifndef JEMALLOC_INTERNAL_EXTENT_MMAP_EXTERNS_H
+#define JEMALLOC_INTERNAL_EXTENT_MMAP_EXTERNS_H
+
+extern bool opt_retain;
+
+void *extent_alloc_mmap(void *new_addr, size_t size, size_t alignment,
+    bool *zero, bool *commit);
+bool extent_dalloc_mmap(void *addr, size_t size);
+
+#endif /* JEMALLOC_INTERNAL_EXTENT_MMAP_EXTERNS_H */
diff --git a/deps/jemalloc/include/jemalloc/internal/fb.h b/deps/jemalloc/include/jemalloc/internal/fb.h
new file mode 100644
index 0000000..90c4091
--- /dev/null
+++ b/deps/jemalloc/include/jemalloc/internal/fb.h
@@ -0,0 +1,373 @@
+#ifndef JEMALLOC_INTERNAL_FB_H
+#define JEMALLOC_INTERNAL_FB_H
+
+/*
+ * The flat bitmap module.  This has a larger API relative to the bitmap module
+ * (supporting things like backwards searches, and searching for both set and
+ * unset bits), at the cost of slower operations for very large bitmaps.
+ *
+ * Initialized flat bitmaps start at all-zeros (all bits unset).
+ */
+
+typedef unsigned long fb_group_t;
+#define FB_GROUP_BITS (ZU(1) << (LG_SIZEOF_LONG + 3))
+#define FB_NGROUPS(nbits) ((nbits) / FB_GROUP_BITS \
+    + ((nbits) % FB_GROUP_BITS == 0 ? 0 : 1))
+
+static inline void
+fb_init(fb_group_t *fb, size_t nbits) {
+	size_t ngroups = FB_NGROUPS(nbits);
+	memset(fb, 0, ngroups * sizeof(fb_group_t));
+}
+
+static inline bool
+fb_empty(fb_group_t *fb, size_t nbits) {
+	size_t ngroups = FB_NGROUPS(nbits);
+	for (size_t i = 0; i < ngroups; i++) {
+		if (fb[i] != 0) {
+			return false;
+		}
+	}
+	return true;
+}
+
+static inline bool
+fb_full(fb_group_t *fb, size_t nbits) {
+	size_t ngroups = FB_NGROUPS(nbits);
+	size_t trailing_bits = nbits % FB_GROUP_BITS;
+	size_t limit = (trailing_bits == 0 ? ngroups : ngroups - 1);
+	for (size_t i = 0; i < limit; i++) {
+		if (fb[i] != ~(fb_group_t)0) {
+			return false;
+		}
+	}
+	if (trailing_bits == 0) {
+		return true;
+	}
+	return fb[ngroups - 1] == ((fb_group_t)1 << trailing_bits) - 1;
+}
+
+static inline bool
+fb_get(fb_group_t *fb, size_t nbits, size_t bit) {
+	assert(bit < nbits);
+	size_t group_ind = bit / FB_GROUP_BITS;
+	size_t bit_ind = bit % FB_GROUP_BITS;
+	return (bool)(fb[group_ind] & ((fb_group_t)1 << bit_ind));
+}
+
+static inline void
+fb_set(fb_group_t *fb, size_t nbits, size_t bit) {
+	assert(bit < nbits);
+	size_t group_ind = bit / FB_GROUP_BITS;
+	size_t bit_ind = bit % FB_GROUP_BITS;
+	fb[group_ind] |= ((fb_group_t)1 << bit_ind);
+}
+
+static inline void
+fb_unset(fb_group_t *fb, size_t nbits, size_t bit) {
+	assert(bit < nbits);
+	size_t group_ind = bit / FB_GROUP_BITS;
+	size_t bit_ind = bit % FB_GROUP_BITS;
+	fb[group_ind] &= ~((fb_group_t)1 << bit_ind);
+}
+
+
+/*
+ * Some implementation details.  This visitation function lets us apply a group
+ * visitor to each group in the bitmap (potentially modifying it).  The mask
+ * indicates which bits are logically part of the visitation.
+ */
+typedef void (*fb_group_visitor_t)(void *ctx, fb_group_t *fb, fb_group_t mask);
+JEMALLOC_ALWAYS_INLINE void
+fb_visit_impl(fb_group_t *fb, size_t nbits, fb_group_visitor_t visit, void *ctx,
+    size_t start, size_t cnt) {
+	assert(cnt > 0);
+	assert(start + cnt <= nbits);
+	size_t group_ind = start / FB_GROUP_BITS;
+	size_t start_bit_ind = start % FB_GROUP_BITS;
+	/*
+	 * The first group is special; it's the only one we don't start writing
+	 * to from bit 0.
+	 */
+	size_t first_group_cnt = (start_bit_ind + cnt > FB_GROUP_BITS
+		? FB_GROUP_BITS - start_bit_ind : cnt);
+	/*
+	 * We can basically split affected words into:
+	 *   - The first group, where we touch only the high bits
+	 *   - The last group, where we touch only the low bits
+	 *   - The middle, where we set all the bits to the same thing.
+	 * We treat each case individually.  The last two could be merged, but
+	 * this can lead to bad codegen for those middle words.
+	 */
+	/* First group */
+	fb_group_t mask = ((~(fb_group_t)0)
+	    >> (FB_GROUP_BITS - first_group_cnt))
+	    << start_bit_ind;
+	visit(ctx, &fb[group_ind], mask);
+
+	cnt -= first_group_cnt;
+	group_ind++;
+	/* Middle groups */
+	while (cnt > FB_GROUP_BITS) {
+		visit(ctx, &fb[group_ind], ~(fb_group_t)0);
+		cnt -= FB_GROUP_BITS;
+		group_ind++;
+	}
+	/* Last group */
+	if (cnt != 0) {
+		mask = (~(fb_group_t)0) >> (FB_GROUP_BITS - cnt);
+		visit(ctx, &fb[group_ind], mask);
+	}
+}
+
+JEMALLOC_ALWAYS_INLINE void
+fb_assign_visitor(void *ctx, fb_group_t *fb, fb_group_t mask) {
+	bool val = *(bool *)ctx;
+	if (val) {
+		*fb |= mask;
+	} else {
+		*fb &= ~mask;
+	}
+}
+
+/* Sets the cnt bits starting at position start.  Must not have a 0 count. */
+static inline void
+fb_set_range(fb_group_t *fb, size_t nbits, size_t start, size_t cnt) {
+	bool val = true;
+	fb_visit_impl(fb, nbits, &fb_assign_visitor, &val, start, cnt);
+}
+
+/* Unsets the cnt bits starting at position start.  Must not have a 0 count. */
+static inline void
+fb_unset_range(fb_group_t *fb, size_t nbits, size_t start, size_t cnt) {
+	bool val = false;
+	fb_visit_impl(fb, nbits, &fb_assign_visitor, &val, start, cnt);
+}
+
+JEMALLOC_ALWAYS_INLINE void
+fb_scount_visitor(void *ctx, fb_group_t *fb, fb_group_t mask) {
+	size_t *scount = (size_t *)ctx;
+	*scount += popcount_lu(*fb & mask);
+}
+
+/* Finds the number of set bit in the of length cnt starting at start. */
+JEMALLOC_ALWAYS_INLINE size_t
+fb_scount(fb_group_t *fb, size_t nbits, size_t start, size_t cnt) {
+	size_t scount = 0;
+	fb_visit_impl(fb, nbits, &fb_scount_visitor, &scount, start, cnt);
+	return scount;
+}
+
+/* Finds the number of unset bit in the of length cnt starting at start. */
+JEMALLOC_ALWAYS_INLINE size_t
+fb_ucount(fb_group_t *fb, size_t nbits, size_t start, size_t cnt) {
+	size_t scount = fb_scount(fb, nbits, start, cnt);
+	return cnt - scount;
+}
+
+/*
+ * An implementation detail; find the first bit at position >= min_bit with the
+ * value val.
+ *
+ * Returns the number of bits in the bitmap if no such bit exists.
+ */
+JEMALLOC_ALWAYS_INLINE ssize_t
+fb_find_impl(fb_group_t *fb, size_t nbits, size_t start, bool val,
+    bool forward) {
+	assert(start < nbits);
+	size_t ngroups = FB_NGROUPS(nbits);
+	ssize_t group_ind = start / FB_GROUP_BITS;
+	size_t bit_ind = start % FB_GROUP_BITS;
+
+	fb_group_t maybe_invert = (val ? 0 : (fb_group_t)-1);
+
+	fb_group_t group = fb[group_ind];
+	group ^= maybe_invert;
+	if (forward) {
+		/* Only keep ones in bits bit_ind and above. */
+		group &= ~((1LU << bit_ind) - 1);
+	} else {
+		/*
+		 * Only keep ones in bits bit_ind and below.  You might more
+		 * naturally express this as (1 << (bit_ind + 1)) - 1, but
+		 * that shifts by an invalid amount if bit_ind is one less than
+		 * FB_GROUP_BITS.
+		 */
+		group &= ((2LU << bit_ind) - 1);
+	}
+	ssize_t group_ind_bound = forward ? (ssize_t)ngroups : -1;
+	while (group == 0) {
+		group_ind += forward ? 1 : -1;
+		if (group_ind == group_ind_bound) {
+			return forward ? (ssize_t)nbits : (ssize_t)-1;
+		}
+		group = fb[group_ind];
+		group ^= maybe_invert;
+	}
+	assert(group != 0);
+	size_t bit = forward ? ffs_lu(group) : fls_lu(group);
+	size_t pos = group_ind * FB_GROUP_BITS + bit;
+	/*
+	 * The high bits of a partially filled last group are zeros, so if we're
+	 * looking for zeros we don't want to report an invalid result.
+	 */
+	if (forward && !val && pos > nbits) {
+		return nbits;
+	}
+	return pos;
+}
+
+/*
+ * Find the first set bit in the bitmap with an index >= min_bit.  Returns the
+ * number of bits in the bitmap if no such bit exists.
+ */
+static inline size_t
+fb_ffu(fb_group_t *fb, size_t nbits, size_t min_bit) {
+	return (size_t)fb_find_impl(fb, nbits, min_bit, /* val */ false,
+	    /* forward */ true);
+}
+
+/* The same, but looks for an unset bit. */
+static inline size_t
+fb_ffs(fb_group_t *fb, size_t nbits, size_t min_bit) {
+	return (size_t)fb_find_impl(fb, nbits, min_bit, /* val */ true,
+	    /* forward */ true);
+}
+
+/*
+ * Find the last set bit in the bitmap with an index <= max_bit.  Returns -1 if
+ * no such bit exists.
+ */
+static inline ssize_t
+fb_flu(fb_group_t *fb, size_t nbits, size_t max_bit) {
+	return fb_find_impl(fb, nbits, max_bit, /* val */ false,
+	    /* forward */ false);
+}
+
+static inline ssize_t
+fb_fls(fb_group_t *fb, size_t nbits, size_t max_bit) {
+	return fb_find_impl(fb, nbits, max_bit, /* val */ true,
+	    /* forward */ false);
+}
+
+/* Returns whether or not we found a range. */
+JEMALLOC_ALWAYS_INLINE bool
+fb_iter_range_impl(fb_group_t *fb, size_t nbits, size_t start, size_t *r_begin,
+    size_t *r_len, bool val, bool forward) {
+	assert(start < nbits);
+	ssize_t next_range_begin = fb_find_impl(fb, nbits, start, val, forward);
+	if ((forward && next_range_begin == (ssize_t)nbits)
+	    || (!forward && next_range_begin == (ssize_t)-1)) {
+		return false;
+	}
+	/* Half open range; the set bits are [begin, end). */
+	ssize_t next_range_end = fb_find_impl(fb, nbits, next_range_begin, !val,
+	    forward);
+	if (forward) {
+		*r_begin = next_range_begin;
+		*r_len = next_range_end - next_range_begin;
+	} else {
+		*r_begin = next_range_end + 1;
+		*r_len = next_range_begin - next_range_end;
+	}
+	return true;
+}
+
+/*
+ * Used to iterate through ranges of set bits.
+ *
+ * Tries to find the next contiguous sequence of set bits with a first index >=
+ * start.  If one exists, puts the earliest bit of the range in *r_begin, its
+ * length in *r_len, and returns true.  Otherwise, returns false (without
+ * touching *r_begin or *r_end).
+ */
+static inline bool
+fb_srange_iter(fb_group_t *fb, size_t nbits, size_t start, size_t *r_begin,
+    size_t *r_len) {
+	return fb_iter_range_impl(fb, nbits, start, r_begin, r_len,
+	    /* val */ true, /* forward */ true);
+}
+
+/*
+ * The same as fb_srange_iter, but searches backwards from start rather than
+ * forwards.  (The position returned is still the earliest bit in the range).
+ */
+static inline bool
+fb_srange_riter(fb_group_t *fb, size_t nbits, size_t start, size_t *r_begin,
+    size_t *r_len) {
+	return fb_iter_range_impl(fb, nbits, start, r_begin, r_len,
+	    /* val */ true, /* forward */ false);
+}
+
+/* Similar to fb_srange_iter, but searches for unset bits. */
+static inline bool
+fb_urange_iter(fb_group_t *fb, size_t nbits, size_t start, size_t *r_begin,
+    size_t *r_len) {
+	return fb_iter_range_impl(fb, nbits, start, r_begin, r_len,
+	    /* val */ false, /* forward */ true);
+}
+
+/* Similar to fb_srange_riter, but searches for unset bits. */
+static inline bool
+fb_urange_riter(fb_group_t *fb, size_t nbits, size_t start, size_t *r_begin,
+    size_t *r_len) {
+	return fb_iter_range_impl(fb, nbits, start, r_begin, r_len,
+	    /* val */ false, /* forward */ false);
+}
+
+JEMALLOC_ALWAYS_INLINE size_t
+fb_range_longest_impl(fb_group_t *fb, size_t nbits, bool val) {
+	size_t begin = 0;
+	size_t longest_len = 0;
+	size_t len = 0;
+	while (begin < nbits && fb_iter_range_impl(fb, nbits, begin, &begin,
+	    &len, val, /* forward */ true)) {
+		if (len > longest_len) {
+			longest_len = len;
+		}
+		begin += len;
+	}
+	return longest_len;
+}
+
+static inline size_t
+fb_srange_longest(fb_group_t *fb, size_t nbits) {
+	return fb_range_longest_impl(fb, nbits, /* val */ true);
+}
+
+static inline size_t
+fb_urange_longest(fb_group_t *fb, size_t nbits) {
+	return fb_range_longest_impl(fb, nbits, /* val */ false);
+}
+
+/*
+ * Initializes each bit of dst with the bitwise-AND of the corresponding bits of
+ * src1 and src2.  All bitmaps must be the same size.
+ */
+static inline void
+fb_bit_and(fb_group_t *dst, fb_group_t *src1, fb_group_t *src2, size_t nbits) {
+	size_t ngroups = FB_NGROUPS(nbits);
+	for (size_t i = 0; i < ngroups; i++) {
+		dst[i] = src1[i] & src2[i];
+	}
+}
+
+/* Like fb_bit_and, but with bitwise-OR. */
+static inline void
+fb_bit_or(fb_group_t *dst, fb_group_t *src1, fb_group_t *src2, size_t nbits) {
+	size_t ngroups = FB_NGROUPS(nbits);
+	for (size_t i = 0; i < ngroups; i++) {
+		dst[i] = src1[i] | src2[i];
+	}
+}
+
+/* Initializes dst bit i to the negation of source bit i. */
+static inline void
+fb_bit_not(fb_group_t *dst, fb_group_t *src, size_t nbits) {
+	size_t ngroups = FB_NGROUPS(nbits);
+	for (size_t i = 0; i < ngroups; i++) {
+		dst[i] = ~src[i];
+	}
+}
+
+#endif /* JEMALLOC_INTERNAL_FB_H */
diff --git a/deps/jemalloc/include/jemalloc/internal/fxp.h b/deps/jemalloc/include/jemalloc/internal/fxp.h
new file mode 100644
index 0000000..415a982
--- /dev/null
+++ b/deps/jemalloc/include/jemalloc/internal/fxp.h
@@ -0,0 +1,126 @@
+#ifndef JEMALLOC_INTERNAL_FXP_H
+#define JEMALLOC_INTERNAL_FXP_H
+
+/*
+ * A simple fixed-point math implementation, supporting only unsigned values
+ * (with overflow being an error).
+ *
+ * It's not in general safe to use floating point in core code, because various
+ * libc implementations we get linked against can assume that malloc won't touch
+ * floating point state and call it with an unusual calling convention.
+ */
+
+/*
+ * High 16 bits are the integer part, low 16 are the fractional part.  Or
+ * equivalently, repr == 2**16 * val, where we use "val" to refer to the
+ * (imaginary) fractional representation of the true value.
+ *
+ * We pick a uint32_t here since it's convenient in some places to
+ * double the representation size (i.e. multiplication and division use
+ * 64-bit integer types), and a uint64_t is the largest type we're
+ * certain is available.
+ */
+typedef uint32_t fxp_t;
+#define FXP_INIT_INT(x) ((x) << 16)
+#define FXP_INIT_PERCENT(pct) (((pct) << 16) / 100)
+
+/*
+ * Amount of precision used in parsing and printing numbers.  The integer bound
+ * is simply because the integer part of the number gets 16 bits, and so is
+ * bounded by 65536.
+ *
+ * We use a lot of precision for the fractional part, even though most of it
+ * gets rounded off; this lets us get exact values for the important special
+ * case where the denominator is a small power of 2 (for instance,
+ * 1/512 == 0.001953125 is exactly representable even with only 16 bits of
+ * fractional precision).  We need to left-shift by 16 before dividing by
+ * 10**precision, so we pick precision to be floor(log(2**48)) = 14.
+ */
+#define FXP_INTEGER_PART_DIGITS 5
+#define FXP_FRACTIONAL_PART_DIGITS 14
+
+/*
+ * In addition to the integer and fractional parts of the number, we need to
+ * include a null character and (possibly) a decimal point.
+ */
+#define FXP_BUF_SIZE (FXP_INTEGER_PART_DIGITS + FXP_FRACTIONAL_PART_DIGITS + 2)
+
+static inline fxp_t
+fxp_add(fxp_t a, fxp_t b) {
+	return a + b;
+}
+
+static inline fxp_t
+fxp_sub(fxp_t a, fxp_t b) {
+	assert(a >= b);
+	return a - b;
+}
+
+static inline fxp_t
+fxp_mul(fxp_t a, fxp_t b) {
+	uint64_t unshifted = (uint64_t)a * (uint64_t)b;
+	/*
+	 * Unshifted is (a.val * 2**16) * (b.val * 2**16)
+	 *   == (a.val * b.val) * 2**32, but we want
+	 * (a.val * b.val) * 2 ** 16.
+	 */
+	return (uint32_t)(unshifted >> 16);
+}
+
+static inline fxp_t
+fxp_div(fxp_t a, fxp_t b) {
+	assert(b != 0);
+	uint64_t unshifted = ((uint64_t)a << 32) / (uint64_t)b;
+	/*
+	 * Unshifted is (a.val * 2**16) * (2**32) / (b.val * 2**16)
+	 *   == (a.val / b.val) * (2 ** 32), which again corresponds to a right
+	 *   shift of 16.
+	 */
+	return (uint32_t)(unshifted >> 16);
+}
+
+static inline uint32_t
+fxp_round_down(fxp_t a) {
+	return a >> 16;
+}
+
+static inline uint32_t
+fxp_round_nearest(fxp_t a) {
+	uint32_t fractional_part = (a  & ((1U << 16) - 1));
+	uint32_t increment = (uint32_t)(fractional_part >= (1U << 15));
+	return (a >> 16) + increment;
+}
+
+/*
+ * Approximately computes x * frac, without the size limitations that would be
+ * imposed by converting u to an fxp_t.
+ */
+static inline size_t
+fxp_mul_frac(size_t x_orig, fxp_t frac) {
+	assert(frac <= (1U << 16));
+	/*
+	 * Work around an over-enthusiastic warning about type limits below (on
+	 * 32-bit platforms, a size_t is always less than 1ULL << 48).
+	 */
+	uint64_t x = (uint64_t)x_orig;
+	/*
+	 * If we can guarantee no overflow, multiply first before shifting, to
+	 * preserve some precision.  Otherwise, shift first and then multiply.
+	 * In the latter case, we only lose the low 16 bits of a 48-bit number,
+	 * so we're still accurate to within 1/2**32.
+	 */
+	if (x < (1ULL << 48)) {
+		return (size_t)((x * frac) >> 16);
+	} else {
+		return (size_t)((x >> 16) * (uint64_t)frac);
+	}
+}
+
+/*
+ * Returns true on error.  Otherwise, returns false and updates *ptr to point to
+ * the first character not parsed (because it wasn't a digit).
+ */
+bool fxp_parse(fxp_t *a, const char *ptr, char **end);
+void fxp_print(fxp_t a, char buf[FXP_BUF_SIZE]);
+
+#endif /* JEMALLOC_INTERNAL_FXP_H */
diff --git a/deps/jemalloc/include/jemalloc/internal/hash.h b/deps/jemalloc/include/jemalloc/internal/hash.h
new file mode 100644
index 0000000..7f94567
--- /dev/null
+++ b/deps/jemalloc/include/jemalloc/internal/hash.h
@@ -0,0 +1,320 @@
+#ifndef JEMALLOC_INTERNAL_HASH_H
+#define JEMALLOC_INTERNAL_HASH_H
+
+#include "jemalloc/internal/assert.h"
+
+/*
+ * The following hash function is based on MurmurHash3, placed into the public
+ * domain by Austin Appleby.  See https://github.com/aappleby/smhasher for
+ * details.
+ */
+
+/******************************************************************************/
+/* Internal implementation. */
+static inline uint32_t
+hash_rotl_32(uint32_t x, int8_t r) {
+	return ((x << r) | (x >> (32 - r)));
+}
+
+static inline uint64_t
+hash_rotl_64(uint64_t x, int8_t r) {
+	return ((x << r) | (x >> (64 - r)));
+}
+
+static inline uint32_t
+hash_get_block_32(const uint32_t *p, int i) {
+	/* Handle unaligned read. */
+	if (unlikely((uintptr_t)p & (sizeof(uint32_t)-1)) != 0) {
+		uint32_t ret;
+
+		memcpy(&ret, (uint8_t *)(p + i), sizeof(uint32_t));
+		return ret;
+	}
+
+	return p[i];
+}
+
+static inline uint64_t
+hash_get_block_64(const uint64_t *p, int i) {
+	/* Handle unaligned read. */
+	if (unlikely((uintptr_t)p & (sizeof(uint64_t)-1)) != 0) {
+		uint64_t ret;
+
+		memcpy(&ret, (uint8_t *)(p + i), sizeof(uint64_t));
+		return ret;
+	}
+
+	return p[i];
+}
+
+static inline uint32_t
+hash_fmix_32(uint32_t h) {
+	h ^= h >> 16;
+	h *= 0x85ebca6b;
+	h ^= h >> 13;
+	h *= 0xc2b2ae35;
+	h ^= h >> 16;
+
+	return h;
+}
+
+static inline uint64_t
+hash_fmix_64(uint64_t k) {
+	k ^= k >> 33;
+	k *= KQU(0xff51afd7ed558ccd);
+	k ^= k >> 33;
+	k *= KQU(0xc4ceb9fe1a85ec53);
+	k ^= k >> 33;
+
+	return k;
+}
+
+static inline uint32_t
+hash_x86_32(const void *key, int len, uint32_t seed) {
+	const uint8_t *data = (const uint8_t *) key;
+	const int nblocks = len / 4;
+
+	uint32_t h1 = seed;
+
+	const uint32_t c1 = 0xcc9e2d51;
+	const uint32_t c2 = 0x1b873593;
+
+	/* body */
+	{
+		const uint32_t *blocks = (const uint32_t *) (data + nblocks*4);
+		int i;
+
+		for (i = -nblocks; i; i++) {
+			uint32_t k1 = hash_get_block_32(blocks, i);
+
+			k1 *= c1;
+			k1 = hash_rotl_32(k1, 15);
+			k1 *= c2;
+
+			h1 ^= k1;
+			h1 = hash_rotl_32(h1, 13);
+			h1 = h1*5 + 0xe6546b64;
+		}
+	}
+
+	/* tail */
+	{
+		const uint8_t *tail = (const uint8_t *) (data + nblocks*4);
+
+		uint32_t k1 = 0;
+
+		switch (len & 3) {
+		case 3: k1 ^= tail[2] << 16; JEMALLOC_FALLTHROUGH;
+		case 2: k1 ^= tail[1] << 8; JEMALLOC_FALLTHROUGH;
+		case 1: k1 ^= tail[0]; k1 *= c1; k1 = hash_rotl_32(k1, 15);
+			k1 *= c2; h1 ^= k1;
+		}
+	}
+
+	/* finalization */
+	h1 ^= len;
+
+	h1 = hash_fmix_32(h1);
+
+	return h1;
+}
+
+static inline void
+hash_x86_128(const void *key, const int len, uint32_t seed,
+    uint64_t r_out[2]) {
+	const uint8_t * data = (const uint8_t *) key;
+	const int nblocks = len / 16;
+
+	uint32_t h1 = seed;
+	uint32_t h2 = seed;
+	uint32_t h3 = seed;
+	uint32_t h4 = seed;
+
+	const uint32_t c1 = 0x239b961b;
+	const uint32_t c2 = 0xab0e9789;
+	const uint32_t c3 = 0x38b34ae5;
+	const uint32_t c4 = 0xa1e38b93;
+
+	/* body */
+	{
+		const uint32_t *blocks = (const uint32_t *) (data + nblocks*16);
+		int i;
+
+		for (i = -nblocks; i; i++) {
+			uint32_t k1 = hash_get_block_32(blocks, i*4 + 0);
+			uint32_t k2 = hash_get_block_32(blocks, i*4 + 1);
+			uint32_t k3 = hash_get_block_32(blocks, i*4 + 2);
+			uint32_t k4 = hash_get_block_32(blocks, i*4 + 3);
+
+			k1 *= c1; k1 = hash_rotl_32(k1, 15); k1 *= c2; h1 ^= k1;
+
+			h1 = hash_rotl_32(h1, 19); h1 += h2;
+			h1 = h1*5 + 0x561ccd1b;
+
+			k2 *= c2; k2 = hash_rotl_32(k2, 16); k2 *= c3; h2 ^= k2;
+
+			h2 = hash_rotl_32(h2, 17); h2 += h3;
+			h2 = h2*5 + 0x0bcaa747;
+
+			k3 *= c3; k3 = hash_rotl_32(k3, 17); k3 *= c4; h3 ^= k3;
+
+			h3 = hash_rotl_32(h3, 15); h3 += h4;
+			h3 = h3*5 + 0x96cd1c35;
+
+			k4 *= c4; k4 = hash_rotl_32(k4, 18); k4 *= c1; h4 ^= k4;
+
+			h4 = hash_rotl_32(h4, 13); h4 += h1;
+			h4 = h4*5 + 0x32ac3b17;
+		}
+	}
+
+	/* tail */
+	{
+		const uint8_t *tail = (const uint8_t *) (data + nblocks*16);
+		uint32_t k1 = 0;
+		uint32_t k2 = 0;
+		uint32_t k3 = 0;
+		uint32_t k4 = 0;
+
+		switch (len & 15) {
+		case 15: k4 ^= tail[14] << 16; JEMALLOC_FALLTHROUGH;
+		case 14: k4 ^= tail[13] << 8; JEMALLOC_FALLTHROUGH;
+		case 13: k4 ^= tail[12] << 0;
+			k4 *= c4; k4 = hash_rotl_32(k4, 18); k4 *= c1; h4 ^= k4;
+			JEMALLOC_FALLTHROUGH;
+		case 12: k3 ^= (uint32_t) tail[11] << 24; JEMALLOC_FALLTHROUGH;
+		case 11: k3 ^= tail[10] << 16; JEMALLOC_FALLTHROUGH;
+		case 10: k3 ^= tail[ 9] << 8; JEMALLOC_FALLTHROUGH;
+		case  9: k3 ^= tail[ 8] << 0;
+			k3 *= c3; k3 = hash_rotl_32(k3, 17); k3 *= c4; h3 ^= k3;
+			JEMALLOC_FALLTHROUGH;
+		case  8: k2 ^= (uint32_t) tail[ 7] << 24; JEMALLOC_FALLTHROUGH;
+		case  7: k2 ^= tail[ 6] << 16; JEMALLOC_FALLTHROUGH;
+		case  6: k2 ^= tail[ 5] << 8; JEMALLOC_FALLTHROUGH;
+		case  5: k2 ^= tail[ 4] << 0;
+			k2 *= c2; k2 = hash_rotl_32(k2, 16); k2 *= c3; h2 ^= k2;
+			JEMALLOC_FALLTHROUGH;
+		case  4: k1 ^= (uint32_t) tail[ 3] << 24; JEMALLOC_FALLTHROUGH;
+		case  3: k1 ^= tail[ 2] << 16; JEMALLOC_FALLTHROUGH;
+		case  2: k1 ^= tail[ 1] << 8; JEMALLOC_FALLTHROUGH;
+		case  1: k1 ^= tail[ 0] << 0;
+			k1 *= c1; k1 = hash_rotl_32(k1, 15); k1 *= c2; h1 ^= k1;
+			break;
+		}
+	}
+
+	/* finalization */
+	h1 ^= len; h2 ^= len; h3 ^= len; h4 ^= len;
+
+	h1 += h2; h1 += h3; h1 += h4;
+	h2 += h1; h3 += h1; h4 += h1;
+
+	h1 = hash_fmix_32(h1);
+	h2 = hash_fmix_32(h2);
+	h3 = hash_fmix_32(h3);
+	h4 = hash_fmix_32(h4);
+
+	h1 += h2; h1 += h3; h1 += h4;
+	h2 += h1; h3 += h1; h4 += h1;
+
+	r_out[0] = (((uint64_t) h2) << 32) | h1;
+	r_out[1] = (((uint64_t) h4) << 32) | h3;
+}
+
+static inline void
+hash_x64_128(const void *key, const int len, const uint32_t seed,
+    uint64_t r_out[2]) {
+	const uint8_t *data = (const uint8_t *) key;
+	const int nblocks = len / 16;
+
+	uint64_t h1 = seed;
+	uint64_t h2 = seed;
+
+	const uint64_t c1 = KQU(0x87c37b91114253d5);
+	const uint64_t c2 = KQU(0x4cf5ad432745937f);
+
+	/* body */
+	{
+		const uint64_t *blocks = (const uint64_t *) (data);
+		int i;
+
+		for (i = 0; i < nblocks; i++) {
+			uint64_t k1 = hash_get_block_64(blocks, i*2 + 0);
+			uint64_t k2 = hash_get_block_64(blocks, i*2 + 1);
+
+			k1 *= c1; k1 = hash_rotl_64(k1, 31); k1 *= c2; h1 ^= k1;
+
+			h1 = hash_rotl_64(h1, 27); h1 += h2;
+			h1 = h1*5 + 0x52dce729;
+
+			k2 *= c2; k2 = hash_rotl_64(k2, 33); k2 *= c1; h2 ^= k2;
+
+			h2 = hash_rotl_64(h2, 31); h2 += h1;
+			h2 = h2*5 + 0x38495ab5;
+		}
+	}
+
+	/* tail */
+	{
+		const uint8_t *tail = (const uint8_t*)(data + nblocks*16);
+		uint64_t k1 = 0;
+		uint64_t k2 = 0;
+
+		switch (len & 15) {
+		case 15: k2 ^= ((uint64_t)(tail[14])) << 48; JEMALLOC_FALLTHROUGH;
+		case 14: k2 ^= ((uint64_t)(tail[13])) << 40; JEMALLOC_FALLTHROUGH;
+		case 13: k2 ^= ((uint64_t)(tail[12])) << 32; JEMALLOC_FALLTHROUGH;
+		case 12: k2 ^= ((uint64_t)(tail[11])) << 24; JEMALLOC_FALLTHROUGH;
+		case 11: k2 ^= ((uint64_t)(tail[10])) << 16; JEMALLOC_FALLTHROUGH;
+		case 10: k2 ^= ((uint64_t)(tail[ 9])) << 8;  JEMALLOC_FALLTHROUGH;
+		case  9: k2 ^= ((uint64_t)(tail[ 8])) << 0;
+			k2 *= c2; k2 = hash_rotl_64(k2, 33); k2 *= c1; h2 ^= k2;
+			JEMALLOC_FALLTHROUGH;
+		case  8: k1 ^= ((uint64_t)(tail[ 7])) << 56; JEMALLOC_FALLTHROUGH;
+		case  7: k1 ^= ((uint64_t)(tail[ 6])) << 48; JEMALLOC_FALLTHROUGH;
+		case  6: k1 ^= ((uint64_t)(tail[ 5])) << 40; JEMALLOC_FALLTHROUGH;
+		case  5: k1 ^= ((uint64_t)(tail[ 4])) << 32; JEMALLOC_FALLTHROUGH;
+		case  4: k1 ^= ((uint64_t)(tail[ 3])) << 24; JEMALLOC_FALLTHROUGH;
+		case  3: k1 ^= ((uint64_t)(tail[ 2])) << 16; JEMALLOC_FALLTHROUGH;
+		case  2: k1 ^= ((uint64_t)(tail[ 1])) << 8;  JEMALLOC_FALLTHROUGH;
+		case  1: k1 ^= ((uint64_t)(tail[ 0])) << 0;
+			k1 *= c1; k1 = hash_rotl_64(k1, 31); k1 *= c2; h1 ^= k1;
+			break;
+		}
+	}
+
+	/* finalization */
+	h1 ^= len; h2 ^= len;
+
+	h1 += h2;
+	h2 += h1;
+
+	h1 = hash_fmix_64(h1);
+	h2 = hash_fmix_64(h2);
+
+	h1 += h2;
+	h2 += h1;
+
+	r_out[0] = h1;
+	r_out[1] = h2;
+}
+
+/******************************************************************************/
+/* API. */
+static inline void
+hash(const void *key, size_t len, const uint32_t seed, size_t r_hash[2]) {
+	assert(len <= INT_MAX); /* Unfortunate implementation limitation. */
+
+#if (LG_SIZEOF_PTR == 3 && !defined(JEMALLOC_BIG_ENDIAN))
+	hash_x64_128(key, (int)len, seed, (uint64_t *)r_hash);
+#else
+	{
+		uint64_t hashes[2];
+		hash_x86_128(key, (int)len, seed, hashes);
+		r_hash[0] = (size_t)hashes[0];
+		r_hash[1] = (size_t)hashes[1];
+	}
+#endif
+}
+
+#endif /* JEMALLOC_INTERNAL_HASH_H */
diff --git a/deps/jemalloc/include/jemalloc/internal/hook.h b/deps/jemalloc/include/jemalloc/internal/hook.h
new file mode 100644
index 0000000..ee246b1
--- /dev/null
+++ b/deps/jemalloc/include/jemalloc/internal/hook.h
@@ -0,0 +1,163 @@
+#ifndef JEMALLOC_INTERNAL_HOOK_H
+#define JEMALLOC_INTERNAL_HOOK_H
+
+#include "jemalloc/internal/tsd.h"
+
+/*
+ * This API is *extremely* experimental, and may get ripped out, changed in API-
+ * and ABI-incompatible ways, be insufficiently or incorrectly documented, etc.
+ *
+ * It allows hooking the stateful parts of the API to see changes as they
+ * happen.
+ *
+ * Allocation hooks are called after the allocation is done, free hooks are
+ * called before the free is done, and expand hooks are called after the
+ * allocation is expanded.
+ *
+ * For realloc and rallocx, if the expansion happens in place, the expansion
+ * hook is called.  If it is moved, then the alloc hook is called on the new
+ * location, and then the free hook is called on the old location (i.e. both
+ * hooks are invoked in between the alloc and the dalloc).
+ *
+ * If we return NULL from OOM, then usize might not be trustworthy.  Calling
+ * realloc(NULL, size) only calls the alloc hook, and calling realloc(ptr, 0)
+ * only calls the free hook.  (Calling realloc(NULL, 0) is treated as malloc(0),
+ * and only calls the alloc hook).
+ *
+ * Reentrancy:
+ *   Reentrancy is guarded against from within the hook implementation.  If you
+ *   call allocator functions from within a hook, the hooks will not be invoked
+ *   again.
+ * Threading:
+ *   The installation of a hook synchronizes with all its uses.  If you can
+ *   prove the installation of a hook happens-before a jemalloc entry point,
+ *   then the hook will get invoked (unless there's a racing removal).
+ *
+ *   Hook insertion appears to be atomic at a per-thread level (i.e. if a thread
+ *   allocates and has the alloc hook invoked, then a subsequent free on the
+ *   same thread will also have the free hook invoked).
+ *
+ *   The *removal* of a hook does *not* block until all threads are done with
+ *   the hook.  Hook authors have to be resilient to this, and need some
+ *   out-of-band mechanism for cleaning up any dynamically allocated memory
+ *   associated with their hook.
+ * Ordering:
+ *   Order of hook execution is unspecified, and may be different than insertion
+ *   order.
+ */
+
+#define HOOK_MAX 4
+
+enum hook_alloc_e {
+	hook_alloc_malloc,
+	hook_alloc_posix_memalign,
+	hook_alloc_aligned_alloc,
+	hook_alloc_calloc,
+	hook_alloc_memalign,
+	hook_alloc_valloc,
+	hook_alloc_mallocx,
+
+	/* The reallocating functions have both alloc and dalloc variants */
+	hook_alloc_realloc,
+	hook_alloc_rallocx,
+};
+/*
+ * We put the enum typedef after the enum, since this file may get included by
+ * jemalloc_cpp.cpp, and C++ disallows enum forward declarations.
+ */
+typedef enum hook_alloc_e hook_alloc_t;
+
+enum hook_dalloc_e {
+	hook_dalloc_free,
+	hook_dalloc_dallocx,
+	hook_dalloc_sdallocx,
+
+	/*
+	 * The dalloc halves of reallocation (not called if in-place expansion
+	 * happens).
+	 */
+	hook_dalloc_realloc,
+	hook_dalloc_rallocx,
+};
+typedef enum hook_dalloc_e hook_dalloc_t;
+
+
+enum hook_expand_e {
+	hook_expand_realloc,
+	hook_expand_rallocx,
+	hook_expand_xallocx,
+};
+typedef enum hook_expand_e hook_expand_t;
+
+typedef void (*hook_alloc)(
+    void *extra, hook_alloc_t type, void *result, uintptr_t result_raw,
+    uintptr_t args_raw[3]);
+
+typedef void (*hook_dalloc)(
+    void *extra, hook_dalloc_t type, void *address, uintptr_t args_raw[3]);
+
+typedef void (*hook_expand)(
+    void *extra, hook_expand_t type, void *address, size_t old_usize,
+    size_t new_usize, uintptr_t result_raw, uintptr_t args_raw[4]);
+
+typedef struct hooks_s hooks_t;
+struct hooks_s {
+	hook_alloc alloc_hook;
+	hook_dalloc dalloc_hook;
+	hook_expand expand_hook;
+	void *extra;
+};
+
+/*
+ * Begin implementation details; everything above this point might one day live
+ * in a public API.  Everything below this point never will.
+ */
+
+/*
+ * The realloc pathways haven't gotten any refactoring love in a while, and it's
+ * fairly difficult to pass information from the entry point to the hooks.  We
+ * put the informaiton the hooks will need into a struct to encapsulate
+ * everything.
+ *
+ * Much of these pathways are force-inlined, so that the compiler can avoid
+ * materializing this struct until we hit an extern arena function.  For fairly
+ * goofy reasons, *many* of the realloc paths hit an extern arena function.
+ * These paths are cold enough that it doesn't matter; eventually, we should
+ * rewrite the realloc code to make the expand-in-place and the
+ * free-then-realloc paths more orthogonal, at which point we don't need to
+ * spread the hook logic all over the place.
+ */
+typedef struct hook_ralloc_args_s hook_ralloc_args_t;
+struct hook_ralloc_args_s {
+	/* I.e. as opposed to rallocx. */
+	bool is_realloc;
+	/*
+	 * The expand hook takes 4 arguments, even if only 3 are actually used;
+	 * we add an extra one in case the user decides to memcpy without
+	 * looking too closely at the hooked function.
+	 */
+	uintptr_t args[4];
+};
+
+/*
+ * Returns an opaque handle to be used when removing the hook.  NULL means that
+ * we couldn't install the hook.
+ */
+bool hook_boot();
+
+void *hook_install(tsdn_t *tsdn, hooks_t *hooks);
+/* Uninstalls the hook with the handle previously returned from hook_install. */
+void hook_remove(tsdn_t *tsdn, void *opaque);
+
+/* Hooks */
+
+void hook_invoke_alloc(hook_alloc_t type, void *result, uintptr_t result_raw,
+    uintptr_t args_raw[3]);
+
+void hook_invoke_dalloc(hook_dalloc_t type, void *address,
+    uintptr_t args_raw[3]);
+
+void hook_invoke_expand(hook_expand_t type, void *address, size_t old_usize,
+    size_t new_usize, uintptr_t result_raw, uintptr_t args_raw[4]);
+
+#endif /* JEMALLOC_INTERNAL_HOOK_H */
diff --git a/deps/jemalloc/include/jemalloc/internal/hpa.h b/deps/jemalloc/include/jemalloc/internal/hpa.h
new file mode 100644
index 0000000..f356285
--- /dev/null
+++ b/deps/jemalloc/include/jemalloc/internal/hpa.h
@@ -0,0 +1,182 @@
+#ifndef JEMALLOC_INTERNAL_HPA_H
+#define JEMALLOC_INTERNAL_HPA_H
+
+#include "jemalloc/internal/exp_grow.h"
+#include "jemalloc/internal/hpa_hooks.h"
+#include "jemalloc/internal/hpa_opts.h"
+#include "jemalloc/internal/pai.h"
+#include "jemalloc/internal/psset.h"
+
+typedef struct hpa_central_s hpa_central_t;
+struct hpa_central_s {
+	/*
+	 * The mutex guarding most of the operations on the central data
+	 * structure.
+	 */
+	malloc_mutex_t mtx;
+	/*
+	 * Guards expansion of eden.  We separate this from the regular mutex so
+	 * that cheaper operations can still continue while we're doing the OS
+	 * call.
+	 */
+	malloc_mutex_t grow_mtx;
+	/*
+	 * Either NULL (if empty), or some integer multiple of a
+	 * hugepage-aligned number of hugepages.  We carve them off one at a
+	 * time to satisfy new pageslab requests.
+	 *
+	 * Guarded by grow_mtx.
+	 */
+	void *eden;
+	size_t eden_len;
+	/* Source for metadata. */
+	base_t *base;
+	/* Number of grow operations done on this hpa_central_t. */
+	uint64_t age_counter;
+
+	/* The HPA hooks. */
+	hpa_hooks_t hooks;
+};
+
+typedef struct hpa_shard_nonderived_stats_s hpa_shard_nonderived_stats_t;
+struct hpa_shard_nonderived_stats_s {
+	/*
+	 * The number of times we've purged within a hugepage.
+	 *
+	 * Guarded by mtx.
+	 */
+	uint64_t npurge_passes;
+	/*
+	 * The number of individual purge calls we perform (which should always
+	 * be bigger than npurge_passes, since each pass purges at least one
+	 * extent within a hugepage.
+	 *
+	 * Guarded by mtx.
+	 */
+	uint64_t npurges;
+
+	/*
+	 * The number of times we've hugified a pageslab.
+	 *
+	 * Guarded by mtx.
+	 */
+	uint64_t nhugifies;
+	/*
+	 * The number of times we've dehugified a pageslab.
+	 *
+	 * Guarded by mtx.
+	 */
+	uint64_t ndehugifies;
+};
+
+/* Completely derived; only used by CTL. */
+typedef struct hpa_shard_stats_s hpa_shard_stats_t;
+struct hpa_shard_stats_s {
+	psset_stats_t psset_stats;
+	hpa_shard_nonderived_stats_t nonderived_stats;
+};
+
+typedef struct hpa_shard_s hpa_shard_t;
+struct hpa_shard_s {
+	/*
+	 * pai must be the first member; we cast from a pointer to it to a
+	 * pointer to the hpa_shard_t.
+	 */
+	pai_t pai;
+
+	/* The central allocator we get our hugepages from. */
+	hpa_central_t *central;
+	/* Protects most of this shard's state. */
+	malloc_mutex_t mtx;
+	/*
+	 * Guards the shard's access to the central allocator (preventing
+	 * multiple threads operating on this shard from accessing the central
+	 * allocator).
+	 */
+	malloc_mutex_t grow_mtx;
+	/* The base metadata allocator. */
+	base_t *base;
+
+	/*
+	 * This edata cache is the one we use when allocating a small extent
+	 * from a pageslab.  The pageslab itself comes from the centralized
+	 * allocator, and so will use its edata_cache.
+	 */
+	edata_cache_fast_t ecf;
+
+	psset_t psset;
+
+	/*
+	 * How many grow operations have occurred.
+	 *
+	 * Guarded by grow_mtx.
+	 */
+	uint64_t age_counter;
+
+	/* The arena ind we're associated with. */
+	unsigned ind;
+
+	/*
+	 * Our emap.  This is just a cache of the emap pointer in the associated
+	 * hpa_central.
+	 */
+	emap_t *emap;
+
+	/* The configuration choices for this hpa shard. */
+	hpa_shard_opts_t opts;
+
+	/*
+	 * How many pages have we started but not yet finished purging in this
+	 * hpa shard.
+	 */
+	size_t npending_purge;
+
+	/*
+	 * Those stats which are copied directly into the CTL-centric hpa shard
+	 * stats.
+	 */
+	hpa_shard_nonderived_stats_t stats;
+
+	/*
+	 * Last time we performed purge on this shard.
+	 */
+	nstime_t last_purge;
+};
+
+/*
+ * Whether or not the HPA can be used given the current configuration.  This is
+ * is not necessarily a guarantee that it backs its allocations by hugepages,
+ * just that it can function properly given the system it's running on.
+ */
+bool hpa_supported();
+bool hpa_central_init(hpa_central_t *central, base_t *base, const hpa_hooks_t *hooks);
+bool hpa_shard_init(hpa_shard_t *shard, hpa_central_t *central, emap_t *emap,
+    base_t *base, edata_cache_t *edata_cache, unsigned ind,
+    const hpa_shard_opts_t *opts);
+
+void hpa_shard_stats_accum(hpa_shard_stats_t *dst, hpa_shard_stats_t *src);
+void hpa_shard_stats_merge(tsdn_t *tsdn, hpa_shard_t *shard,
+    hpa_shard_stats_t *dst);
+
+/*
+ * Notify the shard that we won't use it for allocations much longer.  Due to
+ * the possibility of races, we don't actually prevent allocations; just flush
+ * and disable the embedded edata_cache_small.
+ */
+void hpa_shard_disable(tsdn_t *tsdn, hpa_shard_t *shard);
+void hpa_shard_destroy(tsdn_t *tsdn, hpa_shard_t *shard);
+
+void hpa_shard_set_deferral_allowed(tsdn_t *tsdn, hpa_shard_t *shard,
+    bool deferral_allowed);
+void hpa_shard_do_deferred_work(tsdn_t *tsdn, hpa_shard_t *shard);
+
+/*
+ * We share the fork ordering with the PA and arena prefork handling; that's why
+ * these are 3 and 4 rather than 0 and 1.
+ */
+void hpa_shard_prefork3(tsdn_t *tsdn, hpa_shard_t *shard);
+void hpa_shard_prefork4(tsdn_t *tsdn, hpa_shard_t *shard);
+void hpa_shard_postfork_parent(tsdn_t *tsdn, hpa_shard_t *shard);
+void hpa_shard_postfork_child(tsdn_t *tsdn, hpa_shard_t *shard);
+
+#endif /* JEMALLOC_INTERNAL_HPA_H */
diff --git a/deps/jemalloc/include/jemalloc/internal/hpa_hooks.h b/deps/jemalloc/include/jemalloc/internal/hpa_hooks.h
new file mode 100644
index 0000000..4ea221c
--- /dev/null
+++ b/deps/jemalloc/include/jemalloc/internal/hpa_hooks.h
@@ -0,0 +1,17 @@
+#ifndef JEMALLOC_INTERNAL_HPA_HOOKS_H
+#define JEMALLOC_INTERNAL_HPA_HOOKS_H
+
+typedef struct hpa_hooks_s hpa_hooks_t;
+struct hpa_hooks_s {
+	void *(*map)(size_t size);
+	void (*unmap)(void *ptr, size_t size);
+	void (*purge)(void *ptr, size_t size);
+	void (*hugify)(void *ptr, size_t size);
+	void (*dehugify)(void *ptr, size_t size);
+	void (*curtime)(nstime_t *r_time, bool first_reading);
+	uint64_t (*ms_since)(nstime_t *r_time);
+};
+
+extern hpa_hooks_t hpa_hooks_default;
+
+#endif /* JEMALLOC_INTERNAL_HPA_HOOKS_H */
diff --git a/deps/jemalloc/include/jemalloc/internal/hpa_opts.h b/deps/jemalloc/include/jemalloc/internal/hpa_opts.h
new file mode 100644
index 0000000..ee84fea
--- /dev/null
+++ b/deps/jemalloc/include/jemalloc/internal/hpa_opts.h
@@ -0,0 +1,74 @@
+#ifndef JEMALLOC_INTERNAL_HPA_OPTS_H
+#define JEMALLOC_INTERNAL_HPA_OPTS_H
+
+#include "jemalloc/internal/fxp.h"
+
+/*
+ * This file is morally part of hpa.h, but is split out for header-ordering
+ * reasons.
+ */
+
+typedef struct hpa_shard_opts_s hpa_shard_opts_t;
+struct hpa_shard_opts_s {
+	/*
+	 * The largest size we'll allocate out of the shard.  For those
+	 * allocations refused, the caller (in practice, the PA module) will
+	 * fall back to the more general (for now) PAC, which can always handle
+	 * any allocation request.
+	 */
+	size_t slab_max_alloc;
+
+	/*
+	 * When the number of active bytes in a hugepage is >=
+	 * hugification_threshold, we force hugify it.
+	 */
+	size_t hugification_threshold;
+
+	/*
+	 * The HPA purges whenever the number of pages exceeds dirty_mult *
+	 * active_pages.  This may be set to (fxp_t)-1 to disable purging.
+	 */
+	fxp_t dirty_mult;
+
+	/*
+	 * Whether or not the PAI methods are allowed to defer work to a
+	 * subsequent hpa_shard_do_deferred_work() call.  Practically, this
+	 * corresponds to background threads being enabled.  We track this
+	 * ourselves for encapsulation purposes.
+	 */
+	bool deferral_allowed;
+
+	/*
+	 * How long a hugepage has to be a hugification candidate before it will
+	 * actually get hugified.
+	 */
+	uint64_t hugify_delay_ms;
+
+	/*
+	 * Minimum amount of time between purges.
+	 */
+	uint64_t min_purge_interval_ms;
+};
+
+#define HPA_SHARD_OPTS_DEFAULT {					\
+	/* slab_max_alloc */						\
+	64 * 1024,							\
+	/* hugification_threshold */					\
+	HUGEPAGE * 95 / 100,						\
+	/* dirty_mult */						\
+	FXP_INIT_PERCENT(25),						\
+	/*								\
+	 * deferral_allowed						\
+	 * 								\
+	 * Really, this is always set by the arena during creation	\
+	 * or by an hpa_shard_set_deferral_allowed call, so the value	\
+	 * we put here doesn't matter.					\
+	 */								\
+	false,								\
+	/* hugify_delay_ms */						\
+	10 * 1000,							\
+	/* min_purge_interval_ms */					\
+	5 * 1000							\
+}
+
+#endif /* JEMALLOC_INTERNAL_HPA_OPTS_H */
diff --git a/deps/jemalloc/include/jemalloc/internal/hpdata.h b/deps/jemalloc/include/jemalloc/internal/hpdata.h
new file mode 100644
index 0000000..1fb534d
--- /dev/null
+++ b/deps/jemalloc/include/jemalloc/internal/hpdata.h
@@ -0,0 +1,413 @@
+#ifndef JEMALLOC_INTERNAL_HPDATA_H
+#define JEMALLOC_INTERNAL_HPDATA_H
+
+#include "jemalloc/internal/fb.h"
+#include "jemalloc/internal/ph.h"
+#include "jemalloc/internal/ql.h"
+#include "jemalloc/internal/typed_list.h"
+
+/*
+ * The metadata representation we use for extents in hugepages.  While the PAC
+ * uses the edata_t to represent both active and inactive extents, the HP only
+ * uses the edata_t for active ones; instead, inactive extent state is tracked
+ * within hpdata associated with the enclosing hugepage-sized, hugepage-aligned
+ * region of virtual address space.
+ *
+ * An hpdata need not be "truly" backed by a hugepage (which is not necessarily
+ * an observable property of any given region of address space).  It's just
+ * hugepage-sized and hugepage-aligned; it's *potentially* huge.
+ */
+typedef struct hpdata_s hpdata_t;
+ph_structs(hpdata_age_heap, hpdata_t);
+struct hpdata_s {
+	/*
+	 * We likewise follow the edata convention of mangling names and forcing
+	 * the use of accessors -- this lets us add some consistency checks on
+	 * access.
+	 */
+
+	/*
+	 * The address of the hugepage in question.  This can't be named h_addr,
+	 * since that conflicts with a macro defined in Windows headers.
+	 */
+	void *h_address;
+	/* Its age (measured in psset operations). */
+	uint64_t h_age;
+	/* Whether or not we think the hugepage is mapped that way by the OS. */
+	bool h_huge;
+
+	/*
+	 * For some properties, we keep parallel sets of bools; h_foo_allowed
+	 * and h_in_psset_foo_container.  This is a decoupling mechanism to
+	 * avoid bothering the hpa (which manages policies) from the psset
+	 * (which is the mechanism used to enforce those policies).  This allows
+	 * all the container management logic to live in one place, without the
+	 * HPA needing to know or care how that happens.
+	 */
+
+	/*
+	 * Whether or not the hpdata is allowed to be used to serve allocations,
+	 * and whether or not the psset is currently tracking it as such.
+	 */
+	bool h_alloc_allowed;
+	bool h_in_psset_alloc_container;
+
+	/*
+	 * The same, but with purging.  There's no corresponding
+	 * h_in_psset_purge_container, because the psset (currently) always
+	 * removes hpdatas from their containers during updates (to implement
+	 * LRU for purging).
+	 */
+	bool h_purge_allowed;
+
+	/* And with hugifying. */
+	bool h_hugify_allowed;
+	/* When we became a hugification candidate. */
+	nstime_t h_time_hugify_allowed;
+	bool h_in_psset_hugify_container;
+
+	/* Whether or not a purge or hugify is currently happening. */
+	bool h_mid_purge;
+	bool h_mid_hugify;
+
+	/*
+	 * Whether or not the hpdata is being updated in the psset (i.e. if
+	 * there has been a psset_update_begin call issued without a matching
+	 * psset_update_end call).  Eventually this will expand to other types
+	 * of updates.
+	 */
+	bool h_updating;
+
+	/* Whether or not the hpdata is in a psset. */
+	bool h_in_psset;
+
+	union {
+		/* When nonempty (and also nonfull), used by the psset bins. */
+		hpdata_age_heap_link_t age_link;
+		/*
+		 * When empty (or not corresponding to any hugepage), list
+		 * linkage.
+		 */
+		ql_elm(hpdata_t) ql_link_empty;
+	};
+
+	/*
+	 * Linkage for the psset to track candidates for purging and hugifying.
+	 */
+	ql_elm(hpdata_t) ql_link_purge;
+	ql_elm(hpdata_t) ql_link_hugify;
+
+	/* The length of the largest contiguous sequence of inactive pages. */
+	size_t h_longest_free_range;
+
+	/* Number of active pages. */
+	size_t h_nactive;
+
+	/* A bitmap with bits set in the active pages. */
+	fb_group_t active_pages[FB_NGROUPS(HUGEPAGE_PAGES)];
+
+	/*
+	 * Number of dirty or active pages, and a bitmap tracking them.  One
+	 * way to think of this is as which pages are dirty from the OS's
+	 * perspective.
+	 */
+	size_t h_ntouched;
+
+	/* The touched pages (using the same definition as above). */
+	fb_group_t touched_pages[FB_NGROUPS(HUGEPAGE_PAGES)];
+};
+
+TYPED_LIST(hpdata_empty_list, hpdata_t, ql_link_empty)
+TYPED_LIST(hpdata_purge_list, hpdata_t, ql_link_purge)
+TYPED_LIST(hpdata_hugify_list, hpdata_t, ql_link_hugify)
+
+ph_proto(, hpdata_age_heap, hpdata_t);
+
+static inline void *
+hpdata_addr_get(const hpdata_t *hpdata) {
+	return hpdata->h_address;
+}
+
+static inline void
+hpdata_addr_set(hpdata_t *hpdata, void *addr) {
+	assert(HUGEPAGE_ADDR2BASE(addr) == addr);
+	hpdata->h_address = addr;
+}
+
+static inline uint64_t
+hpdata_age_get(const hpdata_t *hpdata) {
+	return hpdata->h_age;
+}
+
+static inline void
+hpdata_age_set(hpdata_t *hpdata, uint64_t age) {
+	hpdata->h_age = age;
+}
+
+static inline bool
+hpdata_huge_get(const hpdata_t *hpdata) {
+	return hpdata->h_huge;
+}
+
+static inline bool
+hpdata_alloc_allowed_get(const hpdata_t *hpdata) {
+	return hpdata->h_alloc_allowed;
+}
+
+static inline void
+hpdata_alloc_allowed_set(hpdata_t *hpdata, bool alloc_allowed) {
+	hpdata->h_alloc_allowed = alloc_allowed;
+}
+
+static inline bool
+hpdata_in_psset_alloc_container_get(const hpdata_t *hpdata) {
+	return hpdata->h_in_psset_alloc_container;
+}
+
+static inline void
+hpdata_in_psset_alloc_container_set(hpdata_t *hpdata, bool in_container) {
+	assert(in_container != hpdata->h_in_psset_alloc_container);
+	hpdata->h_in_psset_alloc_container = in_container;
+}
+
+static inline bool
+hpdata_purge_allowed_get(const hpdata_t *hpdata) {
+	return hpdata->h_purge_allowed;
+}
+
+static inline void
+hpdata_purge_allowed_set(hpdata_t *hpdata, bool purge_allowed) {
+       assert(purge_allowed == false || !hpdata->h_mid_purge);
+       hpdata->h_purge_allowed = purge_allowed;
+}
+
+static inline bool
+hpdata_hugify_allowed_get(const hpdata_t *hpdata) {
+	return hpdata->h_hugify_allowed;
+}
+
+static inline void
+hpdata_allow_hugify(hpdata_t *hpdata, nstime_t now) {
+	assert(!hpdata->h_mid_hugify);
+	hpdata->h_hugify_allowed = true;
+	hpdata->h_time_hugify_allowed = now;
+}
+
+static inline nstime_t
+hpdata_time_hugify_allowed(hpdata_t *hpdata) {
+	return hpdata->h_time_hugify_allowed;
+}
+
+static inline void
+hpdata_disallow_hugify(hpdata_t *hpdata) {
+	hpdata->h_hugify_allowed = false;
+}
+
+static inline bool
+hpdata_in_psset_hugify_container_get(const hpdata_t *hpdata) {
+	return hpdata->h_in_psset_hugify_container;
+}
+
+static inline void
+hpdata_in_psset_hugify_container_set(hpdata_t *hpdata, bool in_container) {
+	assert(in_container != hpdata->h_in_psset_hugify_container);
+	hpdata->h_in_psset_hugify_container = in_container;
+}
+
+static inline bool
+hpdata_mid_purge_get(const hpdata_t *hpdata) {
+	return hpdata->h_mid_purge;
+}
+
+static inline void
+hpdata_mid_purge_set(hpdata_t *hpdata, bool mid_purge) {
+	assert(mid_purge != hpdata->h_mid_purge);
+	hpdata->h_mid_purge = mid_purge;
+}
+
+static inline bool
+hpdata_mid_hugify_get(const hpdata_t *hpdata) {
+	return hpdata->h_mid_hugify;
+}
+
+static inline void
+hpdata_mid_hugify_set(hpdata_t *hpdata, bool mid_hugify) {
+	assert(mid_hugify != hpdata->h_mid_hugify);
+	hpdata->h_mid_hugify = mid_hugify;
+}
+
+static inline bool
+hpdata_changing_state_get(const hpdata_t *hpdata) {
+	return hpdata->h_mid_purge || hpdata->h_mid_hugify;
+}
+
+
+static inline bool
+hpdata_updating_get(const hpdata_t *hpdata) {
+	return hpdata->h_updating;
+}
+
+static inline void
+hpdata_updating_set(hpdata_t *hpdata, bool updating) {
+	assert(updating != hpdata->h_updating);
+	hpdata->h_updating = updating;
+}
+
+static inline bool
+hpdata_in_psset_get(const hpdata_t *hpdata) {
+	return hpdata->h_in_psset;
+}
+
+static inline void
+hpdata_in_psset_set(hpdata_t *hpdata, bool in_psset) {
+	assert(in_psset != hpdata->h_in_psset);
+	hpdata->h_in_psset = in_psset;
+}
+
+static inline size_t
+hpdata_longest_free_range_get(const hpdata_t *hpdata) {
+	return hpdata->h_longest_free_range;
+}
+
+static inline void
+hpdata_longest_free_range_set(hpdata_t *hpdata, size_t longest_free_range) {
+	assert(longest_free_range <= HUGEPAGE_PAGES);
+	hpdata->h_longest_free_range = longest_free_range;
+}
+
+static inline size_t
+hpdata_nactive_get(hpdata_t *hpdata) {
+	return hpdata->h_nactive;
+}
+
+static inline size_t
+hpdata_ntouched_get(hpdata_t *hpdata) {
+	return hpdata->h_ntouched;
+}
+
+static inline size_t
+hpdata_ndirty_get(hpdata_t *hpdata) {
+	return hpdata->h_ntouched - hpdata->h_nactive;
+}
+
+static inline size_t
+hpdata_nretained_get(hpdata_t *hpdata) {
+	return HUGEPAGE_PAGES - hpdata->h_ntouched;
+}
+
+static inline void
+hpdata_assert_empty(hpdata_t *hpdata) {
+	assert(fb_empty(hpdata->active_pages, HUGEPAGE_PAGES));
+	assert(hpdata->h_nactive == 0);
+}
+
+/*
+ * Only used in tests, and in hpdata_assert_consistent, below.  Verifies some
+ * consistency properties of the hpdata (e.g. that cached counts of page stats
+ * match computed ones).
+ */
+static inline bool
+hpdata_consistent(hpdata_t *hpdata) {
+	if(fb_urange_longest(hpdata->active_pages, HUGEPAGE_PAGES)
+	    != hpdata_longest_free_range_get(hpdata)) {
+		return false;
+	}
+	if (fb_scount(hpdata->active_pages, HUGEPAGE_PAGES, 0, HUGEPAGE_PAGES)
+	    != hpdata->h_nactive) {
+		return false;
+	}
+	if (fb_scount(hpdata->touched_pages, HUGEPAGE_PAGES, 0, HUGEPAGE_PAGES)
+	    != hpdata->h_ntouched) {
+		return false;
+	}
+	if (hpdata->h_ntouched < hpdata->h_nactive) {
+		return false;
+	}
+	if (hpdata->h_huge && hpdata->h_ntouched != HUGEPAGE_PAGES) {
+		return false;
+	}
+	if (hpdata_changing_state_get(hpdata)
+	    && ((hpdata->h_purge_allowed) || hpdata->h_hugify_allowed)) {
+		return false;
+	}
+	if (hpdata_hugify_allowed_get(hpdata)
+	    != hpdata_in_psset_hugify_container_get(hpdata)) {
+		return false;
+	}
+	return true;
+}
+
+static inline void
+hpdata_assert_consistent(hpdata_t *hpdata) {
+	assert(hpdata_consistent(hpdata));
+}
+
+static inline bool
+hpdata_empty(hpdata_t *hpdata) {
+	return hpdata->h_nactive == 0;
+}
+
+static inline bool
+hpdata_full(hpdata_t *hpdata) {
+	return hpdata->h_nactive == HUGEPAGE_PAGES;
+}
+
+void hpdata_init(hpdata_t *hpdata, void *addr, uint64_t age);
+
+/*
+ * Given an hpdata which can serve an allocation request, pick and reserve an
+ * offset within that allocation.
+ */
+void *hpdata_reserve_alloc(hpdata_t *hpdata, size_t sz);
+void hpdata_unreserve(hpdata_t *hpdata, void *begin, size_t sz);
+
+/*
+ * The hpdata_purge_prepare_t allows grabbing the metadata required to purge
+ * subranges of a hugepage while holding a lock, drop the lock during the actual
+ * purging of them, and reacquire it to update the metadata again.
+ */
+typedef struct hpdata_purge_state_s hpdata_purge_state_t;
+struct hpdata_purge_state_s {
+	size_t npurged;
+	size_t ndirty_to_purge;
+	fb_group_t to_purge[FB_NGROUPS(HUGEPAGE_PAGES)];
+	size_t next_purge_search_begin;
+};
+
+/*
+ * Initializes purge state.  The access to hpdata must be externally
+ * synchronized with other hpdata_* calls.
+ *
+ * You can tell whether or not a thread is purging or hugifying a given hpdata
+ * via hpdata_changing_state_get(hpdata).  Racing hugification or purging
+ * operations aren't allowed.
+ *
+ * Once you begin purging, you have to follow through and call hpdata_purge_next
+ * until you're done, and then end.  Allocating out of an hpdata undergoing
+ * purging is not allowed.
+ *
+ * Returns the number of dirty pages that will be purged.
+ */
+size_t hpdata_purge_begin(hpdata_t *hpdata, hpdata_purge_state_t *purge_state);
+
+/*
+ * If there are more extents to purge, sets *r_purge_addr and *r_purge_size to
+ * true, and returns true.  Otherwise, returns false to indicate that we're
+ * done.
+ *
+ * This requires exclusive access to the purge state, but *not* to the hpdata.
+ * In particular, unreserve calls are allowed while purging (i.e. you can dalloc
+ * into one part of the hpdata while purging a different part).
+ */
+bool hpdata_purge_next(hpdata_t *hpdata, hpdata_purge_state_t *purge_state,
+    void **r_purge_addr, size_t *r_purge_size);
+/*
+ * Updates the hpdata metadata after all purging is done.  Needs external
+ * synchronization.
+ */
+void hpdata_purge_end(hpdata_t *hpdata, hpdata_purge_state_t *purge_state);
+
+void hpdata_hugify(hpdata_t *hpdata);
+void hpdata_dehugify(hpdata_t *hpdata);
+
+#endif /* JEMALLOC_INTERNAL_HPDATA_H */
diff --git a/deps/jemalloc/include/jemalloc/internal/inspect.h b/deps/jemalloc/include/jemalloc/internal/inspect.h
new file mode 100644
index 0000000..65fef51
--- /dev/null
+++ b/deps/jemalloc/include/jemalloc/internal/inspect.h
@@ -0,0 +1,40 @@
+#ifndef JEMALLOC_INTERNAL_INSPECT_H
+#define JEMALLOC_INTERNAL_INSPECT_H
+
+/*
+ * This module contains the heap introspection capabilities.  For now they are
+ * exposed purely through mallctl APIs in the experimental namespace, but this
+ * may change over time.
+ */
+
+/*
+ * The following two structs are for experimental purposes. See
+ * experimental_utilization_query_ctl and
+ * experimental_utilization_batch_query_ctl in src/ctl.c.
+ */
+typedef struct inspect_extent_util_stats_s inspect_extent_util_stats_t;
+struct inspect_extent_util_stats_s {
+	size_t nfree;
+	size_t nregs;
+	size_t size;
+};
+
+typedef struct inspect_extent_util_stats_verbose_s
+    inspect_extent_util_stats_verbose_t;
+
+struct inspect_extent_util_stats_verbose_s {
+	void *slabcur_addr;
+	size_t nfree;
+	size_t nregs;
+	size_t size;
+	size_t bin_nfree;
+	size_t bin_nregs;
+};
+
+void inspect_extent_util_stats_get(tsdn_t *tsdn, const void *ptr,
+    size_t *nfree, size_t *nregs, size_t *size);
+void inspect_extent_util_stats_verbose_get(tsdn_t *tsdn, const void *ptr,
+    size_t *nfree, size_t *nregs, size_t *size,
+    size_t *bin_nfree, size_t *bin_nregs, void **slabcur_addr);
+
+#endif /* JEMALLOC_INTERNAL_INSPECT_H */
diff --git a/deps/jemalloc/include/jemalloc/internal/jemalloc_internal_decls.h b/deps/jemalloc/include/jemalloc/internal/jemalloc_internal_decls.h
new file mode 100644
index 0000000..983027c
--- /dev/null
+++ b/deps/jemalloc/include/jemalloc/internal/jemalloc_internal_decls.h
@@ -0,0 +1,108 @@
+#ifndef JEMALLOC_INTERNAL_DECLS_H
+#define JEMALLOC_INTERNAL_DECLS_H
+
+#include <math.h>
+#ifdef _WIN32
+#  include <windows.h>
+#  include "msvc_compat/windows_extra.h"
+#  include "msvc_compat/strings.h"
+#  ifdef _WIN64
+#    if LG_VADDR <= 32
+#      error Generate the headers using x64 vcargs
+#    endif
+#  else
+#    if LG_VADDR > 32
+#      undef LG_VADDR
+#      define LG_VADDR 32
+#    endif
+#  endif
+#else
+#  include <sys/param.h>
+#  include <sys/mman.h>
+#  if !defined(__pnacl__) && !defined(__native_client__)
+#    include <sys/syscall.h>
+#    if !defined(SYS_write) && defined(__NR_write)
+#      define SYS_write __NR_write
+#    endif
+#    if defined(SYS_open) && defined(__aarch64__)
+       /* Android headers may define SYS_open to __NR_open even though
+        * __NR_open may not exist on AArch64 (superseded by __NR_openat). */
+#      undef SYS_open
+#    endif
+#    include <sys/uio.h>
+#  endif
+#  include <pthread.h>
+#  if defined(__FreeBSD__) || defined(__DragonFly__)
+#  include <pthread_np.h>
+#  include <sched.h>
+#  if defined(__FreeBSD__)
+#    define cpu_set_t cpuset_t
+#  endif
+#  endif
+#  include <signal.h>
+#  ifdef JEMALLOC_OS_UNFAIR_LOCK
+#    include <os/lock.h>
+#  endif
+#  ifdef JEMALLOC_GLIBC_MALLOC_HOOK
+#    include <sched.h>
+#  endif
+#  include <errno.h>
+#  include <sys/time.h>
+#  include <time.h>
+#  ifdef JEMALLOC_HAVE_MACH_ABSOLUTE_TIME
+#    include <mach/mach_time.h>
+#  endif
+#endif
+#include <sys/types.h>
+
+#include <limits.h>
+#ifndef SIZE_T_MAX
+#  define SIZE_T_MAX	SIZE_MAX
+#endif
+#ifndef SSIZE_MAX
+#  define SSIZE_MAX	((ssize_t)(SIZE_T_MAX >> 1))
+#endif
+#include <stdarg.h>
+#include <stdbool.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdint.h>
+#include <stddef.h>
+#ifndef offsetof
+#  define offsetof(type, member)	((size_t)&(((type *)NULL)->member))
+#endif
+#include <string.h>
+#include <strings.h>
+#include <ctype.h>
+#ifdef _MSC_VER
+#  include <io.h>
+typedef intptr_t ssize_t;
+#  define PATH_MAX 1024
+#  define STDERR_FILENO 2
+#  define __func__ __FUNCTION__
+#  ifdef JEMALLOC_HAS_RESTRICT
+#    define restrict __restrict
+#  endif
+/* Disable warnings about deprecated system functions. */
+#  pragma warning(disable: 4996)
+#if _MSC_VER < 1800
+static int
+isblank(int c) {
+	return (c == '\t' || c == ' ');
+}
+#endif
+#else
+#  include <unistd.h>
+#endif
+#include <fcntl.h>
+
+/*
+ * The Win32 midl compiler has #define small char; we don't use midl, but
+ * "small" is a nice identifier to have available when talking about size
+ * classes.
+ */
+#ifdef small
+#  undef small
+#endif
+
+#endif /* JEMALLOC_INTERNAL_H */
diff --git a/deps/jemalloc/include/jemalloc/internal/jemalloc_internal_defs.h.in b/deps/jemalloc/include/jemalloc/internal/jemalloc_internal_defs.h.in
new file mode 100644
index 0000000..3588072
--- /dev/null
+++ b/deps/jemalloc/include/jemalloc/internal/jemalloc_internal_defs.h.in
@@ -0,0 +1,427 @@
+#ifndef JEMALLOC_INTERNAL_DEFS_H_
+#define JEMALLOC_INTERNAL_DEFS_H_
+/*
+ * If JEMALLOC_PREFIX is defined via --with-jemalloc-prefix, it will cause all
+ * public APIs to be prefixed.  This makes it possible, with some care, to use
+ * multiple allocators simultaneously.
+ */
+#undef JEMALLOC_PREFIX
+#undef JEMALLOC_CPREFIX
+
+/*
+ * Define overrides for non-standard allocator-related functions if they are
+ * present on the system.
+ */
+#undef JEMALLOC_OVERRIDE___LIBC_CALLOC
+#undef JEMALLOC_OVERRIDE___LIBC_FREE
+#undef JEMALLOC_OVERRIDE___LIBC_MALLOC
+#undef JEMALLOC_OVERRIDE___LIBC_MEMALIGN
+#undef JEMALLOC_OVERRIDE___LIBC_REALLOC
+#undef JEMALLOC_OVERRIDE___LIBC_VALLOC
+#undef JEMALLOC_OVERRIDE___POSIX_MEMALIGN
+
+/*
+ * JEMALLOC_PRIVATE_NAMESPACE is used as a prefix for all library-private APIs.
+ * For shared libraries, symbol visibility mechanisms prevent these symbols
+ * from being exported, but for static libraries, naming collisions are a real
+ * possibility.
+ */
+#undef JEMALLOC_PRIVATE_NAMESPACE
+
+/*
+ * Hyper-threaded CPUs may need a special instruction inside spin loops in
+ * order to yield to another virtual CPU.
+ */
+#undef CPU_SPINWAIT
+/* 1 if CPU_SPINWAIT is defined, 0 otherwise. */
+#undef HAVE_CPU_SPINWAIT
+
+/*
+ * Number of significant bits in virtual addresses.  This may be less than the
+ * total number of bits in a pointer, e.g. on x64, for which the uppermost 16
+ * bits are the same as bit 47.
+ */
+#undef LG_VADDR
+
+/* Defined if C11 atomics are available. */
+#undef JEMALLOC_C11_ATOMICS
+
+/* Defined if GCC __atomic atomics are available. */
+#undef JEMALLOC_GCC_ATOMIC_ATOMICS
+/* and the 8-bit variant support. */
+#undef JEMALLOC_GCC_U8_ATOMIC_ATOMICS
+
+/* Defined if GCC __sync atomics are available. */
+#undef JEMALLOC_GCC_SYNC_ATOMICS
+/* and the 8-bit variant support. */
+#undef JEMALLOC_GCC_U8_SYNC_ATOMICS
+
+/*
+ * Defined if __builtin_clz() and __builtin_clzl() are available.
+ */
+#undef JEMALLOC_HAVE_BUILTIN_CLZ
+
+/*
+ * Defined if os_unfair_lock_*() functions are available, as provided by Darwin.
+ */
+#undef JEMALLOC_OS_UNFAIR_LOCK
+
+/* Defined if syscall(2) is usable. */
+#undef JEMALLOC_USE_SYSCALL
+
+/*
+ * Defined if secure_getenv(3) is available.
+ */
+#undef JEMALLOC_HAVE_SECURE_GETENV
+
+/*
+ * Defined if issetugid(2) is available.
+ */
+#undef JEMALLOC_HAVE_ISSETUGID
+
+/* Defined if pthread_atfork(3) is available. */
+#undef JEMALLOC_HAVE_PTHREAD_ATFORK
+
+/* Defined if pthread_setname_np(3) is available. */
+#undef JEMALLOC_HAVE_PTHREAD_SETNAME_NP
+
+/* Defined if pthread_getname_np(3) is available. */
+#undef JEMALLOC_HAVE_PTHREAD_GETNAME_NP
+
+/* Defined if pthread_get_name_np(3) is available. */
+#undef JEMALLOC_HAVE_PTHREAD_GET_NAME_NP
+
+/*
+ * Defined if clock_gettime(CLOCK_MONOTONIC_COARSE, ...) is available.
+ */
+#undef JEMALLOC_HAVE_CLOCK_MONOTONIC_COARSE
+
+/*
+ * Defined if clock_gettime(CLOCK_MONOTONIC, ...) is available.
+ */
+#undef JEMALLOC_HAVE_CLOCK_MONOTONIC
+
+/*
+ * Defined if mach_absolute_time() is available.
+ */
+#undef JEMALLOC_HAVE_MACH_ABSOLUTE_TIME
+
+/*
+ * Defined if clock_gettime(CLOCK_REALTIME, ...) is available.
+ */
+#undef JEMALLOC_HAVE_CLOCK_REALTIME
+
+/*
+ * Defined if _malloc_thread_cleanup() exists.  At least in the case of
+ * FreeBSD, pthread_key_create() allocates, which if used during malloc
+ * bootstrapping will cause recursion into the pthreads library.  Therefore, if
+ * _malloc_thread_cleanup() exists, use it as the basis for thread cleanup in
+ * malloc_tsd.
+ */
+#undef JEMALLOC_MALLOC_THREAD_CLEANUP
+
+/*
+ * Defined if threaded initialization is known to be safe on this platform.
+ * Among other things, it must be possible to initialize a mutex without
+ * triggering allocation in order for threaded allocation to be safe.
+ */
+#undef JEMALLOC_THREADED_INIT
+
+/*
+ * Defined if the pthreads implementation defines
+ * _pthread_mutex_init_calloc_cb(), in which case the function is used in order
+ * to avoid recursive allocation during mutex initialization.
+ */
+#undef JEMALLOC_MUTEX_INIT_CB
+
+/* Non-empty if the tls_model attribute is supported. */
+#undef JEMALLOC_TLS_MODEL
+
+/*
+ * JEMALLOC_DEBUG enables assertions and other sanity checks, and disables
+ * inline functions.
+ */
+#undef JEMALLOC_DEBUG
+
+/* JEMALLOC_STATS enables statistics calculation. */
+#undef JEMALLOC_STATS
+
+/* JEMALLOC_EXPERIMENTAL_SMALLOCX_API enables experimental smallocx API. */
+#undef JEMALLOC_EXPERIMENTAL_SMALLOCX_API
+
+/* JEMALLOC_PROF enables allocation profiling. */
+#undef JEMALLOC_PROF
+
+/* Use libunwind for profile backtracing if defined. */
+#undef JEMALLOC_PROF_LIBUNWIND
+
+/* Use libgcc for profile backtracing if defined. */
+#undef JEMALLOC_PROF_LIBGCC
+
+/* Use gcc intrinsics for profile backtracing if defined. */
+#undef JEMALLOC_PROF_GCC
+
+/*
+ * JEMALLOC_DSS enables use of sbrk(2) to allocate extents from the data storage
+ * segment (DSS).
+ */
+#undef JEMALLOC_DSS
+
+/* Support memory filling (junk/zero). */
+#undef JEMALLOC_FILL
+
+/* Support utrace(2)-based tracing. */
+#undef JEMALLOC_UTRACE
+
+/* Support utrace(2)-based tracing (label based signature). */
+#undef JEMALLOC_UTRACE_LABEL
+
+/* Support optional abort() on OOM. */
+#undef JEMALLOC_XMALLOC
+
+/* Support lazy locking (avoid locking unless a second thread is launched). */
+#undef JEMALLOC_LAZY_LOCK
+
+/*
+ * Minimum allocation alignment is 2^LG_QUANTUM bytes (ignoring tiny size
+ * classes).
+ */
+#undef LG_QUANTUM
+
+/* One page is 2^LG_PAGE bytes. */
+#undef LG_PAGE
+
+/* Maximum number of regions in a slab. */
+#undef CONFIG_LG_SLAB_MAXREGS
+
+/*
+ * One huge page is 2^LG_HUGEPAGE bytes.  Note that this is defined even if the
+ * system does not explicitly support huge pages; system calls that require
+ * explicit huge page support are separately configured.
+ */
+#undef LG_HUGEPAGE
+
+/*
+ * If defined, adjacent virtual memory mappings with identical attributes
+ * automatically coalesce, and they fragment when changes are made to subranges.
+ * This is the normal order of things for mmap()/munmap(), but on Windows
+ * VirtualAlloc()/VirtualFree() operations must be precisely matched, i.e.
+ * mappings do *not* coalesce/fragment.
+ */
+#undef JEMALLOC_MAPS_COALESCE
+
+/*
+ * If defined, retain memory for later reuse by default rather than using e.g.
+ * munmap() to unmap freed extents.  This is enabled on 64-bit Linux because
+ * common sequences of mmap()/munmap() calls will cause virtual memory map
+ * holes.
+ */
+#undef JEMALLOC_RETAIN
+
+/* TLS is used to map arenas and magazine caches to threads. */
+#undef JEMALLOC_TLS
+
+/*
+ * Used to mark unreachable code to quiet "end of non-void" compiler warnings.
+ * Don't use this directly; instead use unreachable() from util.h
+ */
+#undef JEMALLOC_INTERNAL_UNREACHABLE
+
+/*
+ * ffs*() functions to use for bitmapping.  Don't use these directly; instead,
+ * use ffs_*() from util.h.
+ */
+#undef JEMALLOC_INTERNAL_FFSLL
+#undef JEMALLOC_INTERNAL_FFSL
+#undef JEMALLOC_INTERNAL_FFS
+
+/*
+ * popcount*() functions to use for bitmapping.
+ */
+#undef JEMALLOC_INTERNAL_POPCOUNTL
+#undef JEMALLOC_INTERNAL_POPCOUNT
+
+/*
+ * If defined, explicitly attempt to more uniformly distribute large allocation
+ * pointer alignments across all cache indices.
+ */
+#undef JEMALLOC_CACHE_OBLIVIOUS
+
+/*
+ * If defined, enable logging facilities.  We make this a configure option to
+ * avoid taking extra branches everywhere.
+ */
+#undef JEMALLOC_LOG
+
+/*
+ * If defined, use readlinkat() (instead of readlink()) to follow
+ * /etc/malloc_conf.
+ */
+#undef JEMALLOC_READLINKAT
+
+/*
+ * Darwin (OS X) uses zones to work around Mach-O symbol override shortcomings.
+ */
+#undef JEMALLOC_ZONE
+
+/*
+ * Methods for determining whether the OS overcommits.
+ * JEMALLOC_PROC_SYS_VM_OVERCOMMIT_MEMORY: Linux's
+ *                                         /proc/sys/vm.overcommit_memory file.
+ * JEMALLOC_SYSCTL_VM_OVERCOMMIT: FreeBSD's vm.overcommit sysctl.
+ */
+#undef JEMALLOC_SYSCTL_VM_OVERCOMMIT
+#undef JEMALLOC_PROC_SYS_VM_OVERCOMMIT_MEMORY
+
+/* Defined if madvise(2) is available. */
+#undef JEMALLOC_HAVE_MADVISE
+
+/*
+ * Defined if transparent huge pages are supported via the MADV_[NO]HUGEPAGE
+ * arguments to madvise(2).
+ */
+#undef JEMALLOC_HAVE_MADVISE_HUGE
+
+/*
+ * Methods for purging unused pages differ between operating systems.
+ *
+ *   madvise(..., MADV_FREE) : This marks pages as being unused, such that they
+ *                             will be discarded rather than swapped out.
+ *   madvise(..., MADV_DONTNEED) : If JEMALLOC_PURGE_MADVISE_DONTNEED_ZEROS is
+ *                                 defined, this immediately discards pages,
+ *                                 such that new pages will be demand-zeroed if
+ *                                 the address region is later touched;
+ *                                 otherwise this behaves similarly to
+ *                                 MADV_FREE, though typically with higher
+ *                                 system overhead.
+ */
+#undef JEMALLOC_PURGE_MADVISE_FREE
+#undef JEMALLOC_PURGE_MADVISE_DONTNEED
+#undef JEMALLOC_PURGE_MADVISE_DONTNEED_ZEROS
+
+/* Defined if madvise(2) is available but MADV_FREE is not (x86 Linux only). */
+#undef JEMALLOC_DEFINE_MADVISE_FREE
+
+/*
+ * Defined if MADV_DO[NT]DUMP is supported as an argument to madvise.
+ */
+#undef JEMALLOC_MADVISE_DONTDUMP
+
+/*
+ * Defined if MADV_[NO]CORE is supported as an argument to madvise.
+ */
+#undef JEMALLOC_MADVISE_NOCORE
+
+/* Defined if mprotect(2) is available. */
+#undef JEMALLOC_HAVE_MPROTECT
+
+/*
+ * Defined if transparent huge pages (THPs) are supported via the
+ * MADV_[NO]HUGEPAGE arguments to madvise(2), and THP support is enabled.
+ */
+#undef JEMALLOC_THP
+
+/* Defined if posix_madvise is available. */
+#undef JEMALLOC_HAVE_POSIX_MADVISE
+
+/*
+ * Method for purging unused pages using posix_madvise.
+ *
+ *   posix_madvise(..., POSIX_MADV_DONTNEED)
+ */
+#undef JEMALLOC_PURGE_POSIX_MADVISE_DONTNEED
+#undef JEMALLOC_PURGE_POSIX_MADVISE_DONTNEED_ZEROS
+
+/*
+ * Defined if memcntl page admin call is supported
+ */
+#undef JEMALLOC_HAVE_MEMCNTL
+
+/*
+ * Defined if malloc_size is supported
+ */
+#undef JEMALLOC_HAVE_MALLOC_SIZE
+
+/* Define if operating system has alloca.h header. */
+#undef JEMALLOC_HAS_ALLOCA_H
+
+/* C99 restrict keyword supported. */
+#undef JEMALLOC_HAS_RESTRICT
+
+/* For use by hash code. */
+#undef JEMALLOC_BIG_ENDIAN
+
+/* sizeof(int) == 2^LG_SIZEOF_INT. */
+#undef LG_SIZEOF_INT
+
+/* sizeof(long) == 2^LG_SIZEOF_LONG. */
+#undef LG_SIZEOF_LONG
+
+/* sizeof(long long) == 2^LG_SIZEOF_LONG_LONG. */
+#undef LG_SIZEOF_LONG_LONG
+
+/* sizeof(intmax_t) == 2^LG_SIZEOF_INTMAX_T. */
+#undef LG_SIZEOF_INTMAX_T
+
+/* glibc malloc hooks (__malloc_hook, __realloc_hook, __free_hook). */
+#undef JEMALLOC_GLIBC_MALLOC_HOOK
+
+/* glibc memalign hook. */
+#undef JEMALLOC_GLIBC_MEMALIGN_HOOK
+
+/* pthread support */
+#undef JEMALLOC_HAVE_PTHREAD
+
+/* dlsym() support */
+#undef JEMALLOC_HAVE_DLSYM
+
+/* Adaptive mutex support in pthreads. */
+#undef JEMALLOC_HAVE_PTHREAD_MUTEX_ADAPTIVE_NP
+
+/* GNU specific sched_getcpu support */
+#undef JEMALLOC_HAVE_SCHED_GETCPU
+
+/* GNU specific sched_setaffinity support */
+#undef JEMALLOC_HAVE_SCHED_SETAFFINITY
+
+/*
+ * If defined, all the features necessary for background threads are present.
+ */
+#undef JEMALLOC_BACKGROUND_THREAD
+
+/*
+ * If defined, jemalloc symbols are not exported (doesn't work when
+ * JEMALLOC_PREFIX is not defined).
+ */
+#undef JEMALLOC_EXPORT
+
+/* config.malloc_conf options string. */
+#undef JEMALLOC_CONFIG_MALLOC_CONF
+
+/* If defined, jemalloc takes the malloc/free/etc. symbol names. */
+#undef JEMALLOC_IS_MALLOC
+
+/*
+ * Defined if strerror_r returns char * if _GNU_SOURCE is defined.
+ */
+#undef JEMALLOC_STRERROR_R_RETURNS_CHAR_WITH_GNU_SOURCE
+
+/* Performs additional safety checks when defined. */
+#undef JEMALLOC_OPT_SAFETY_CHECKS
+
+/* Is C++ support being built? */
+#undef JEMALLOC_ENABLE_CXX
+
+/* Performs additional size checks when defined. */
+#undef JEMALLOC_OPT_SIZE_CHECKS
+
+/* Allows sampled junk and stash for checking use-after-free when defined. */
+#undef JEMALLOC_UAF_DETECTION
+
+/* Darwin VM_MAKE_TAG support */
+#undef JEMALLOC_HAVE_VM_MAKE_TAG
+
+/* If defined, realloc(ptr, 0) defaults to "free" instead of "alloc". */
+#undef JEMALLOC_ZERO_REALLOC_DEFAULT_FREE
+
+#endif /* JEMALLOC_INTERNAL_DEFS_H_ */
diff --git a/deps/jemalloc/include/jemalloc/internal/jemalloc_internal_externs.h b/deps/jemalloc/include/jemalloc/internal/jemalloc_internal_externs.h
new file mode 100644
index 0000000..fc834c6
--- /dev/null
+++ b/deps/jemalloc/include/jemalloc/internal/jemalloc_internal_externs.h
@@ -0,0 +1,75 @@
+#ifndef JEMALLOC_INTERNAL_EXTERNS_H
+#define JEMALLOC_INTERNAL_EXTERNS_H
+
+#include "jemalloc/internal/atomic.h"
+#include "jemalloc/internal/hpa_opts.h"
+#include "jemalloc/internal/sec_opts.h"
+#include "jemalloc/internal/tsd_types.h"
+#include "jemalloc/internal/nstime.h"
+
+/* TSD checks this to set thread local slow state accordingly. */
+extern bool malloc_slow;
+
+/* Run-time options. */
+extern bool opt_abort;
+extern bool opt_abort_conf;
+extern bool opt_trust_madvise;
+extern bool opt_confirm_conf;
+extern bool opt_hpa;
+extern hpa_shard_opts_t opt_hpa_opts;
+extern sec_opts_t opt_hpa_sec_opts;
+
+extern const char *opt_junk;
+extern bool opt_junk_alloc;
+extern bool opt_junk_free;
+extern void (*junk_free_callback)(void *ptr, size_t size);
+extern void (*junk_alloc_callback)(void *ptr, size_t size);
+extern bool opt_utrace;
+extern bool opt_xmalloc;
+extern bool opt_experimental_infallible_new;
+extern bool opt_zero;
+extern unsigned opt_narenas;
+extern zero_realloc_action_t opt_zero_realloc_action;
+extern malloc_init_t malloc_init_state;
+extern const char *zero_realloc_mode_names[];
+extern atomic_zu_t zero_realloc_count;
+extern bool opt_cache_oblivious;
+
+/* Escape free-fastpath when ptr & mask == 0 (for sanitization purpose). */
+extern uintptr_t san_cache_bin_nonfast_mask;
+
+/* Number of CPUs. */
+extern unsigned ncpus;
+
+/* Number of arenas used for automatic multiplexing of threads and arenas. */
+extern unsigned narenas_auto;
+
+/* Base index for manual arenas. */
+extern unsigned manual_arena_base;
+
+/*
+ * Arenas that are used to service external requests.  Not all elements of the
+ * arenas array are necessarily used; arenas are created lazily as needed.
+ */
+extern atomic_p_t arenas[];
+
+void *a0malloc(size_t size);
+void a0dalloc(void *ptr);
+void *bootstrap_malloc(size_t size);
+void *bootstrap_calloc(size_t num, size_t size);
+void bootstrap_free(void *ptr);
+void arena_set(unsigned ind, arena_t *arena);
+unsigned narenas_total_get(void);
+arena_t *arena_init(tsdn_t *tsdn, unsigned ind, const arena_config_t *config);
+arena_t *arena_choose_hard(tsd_t *tsd, bool internal);
+void arena_migrate(tsd_t *tsd, arena_t *oldarena, arena_t *newarena);
+void iarena_cleanup(tsd_t *tsd);
+void arena_cleanup(tsd_t *tsd);
+size_t batch_alloc(void **ptrs, size_t num, size_t size, int flags);
+void jemalloc_prefork(void);
+void jemalloc_postfork_parent(void);
+void jemalloc_postfork_child(void);
+void je_sdallocx_noflags(void *ptr, size_t size);
+void *malloc_default(size_t size);
+
+#endif /* JEMALLOC_INTERNAL_EXTERNS_H */
diff --git a/deps/jemalloc/include/jemalloc/internal/jemalloc_internal_includes.h b/deps/jemalloc/include/jemalloc/internal/jemalloc_internal_includes.h
new file mode 100644
index 0000000..751c112
--- /dev/null
+++ b/deps/jemalloc/include/jemalloc/internal/jemalloc_internal_includes.h
@@ -0,0 +1,84 @@
+#ifndef JEMALLOC_INTERNAL_INCLUDES_H
+#define JEMALLOC_INTERNAL_INCLUDES_H
+
+/*
+ * jemalloc can conceptually be broken into components (arena, tcache, etc.),
+ * but there are circular dependencies that cannot be broken without
+ * substantial performance degradation.
+ *
+ * Historically, we dealt with this by each header into four sections (types,
+ * structs, externs, and inlines), and included each header file multiple times
+ * in this file, picking out the portion we want on each pass using the
+ * following #defines:
+ *   JEMALLOC_H_TYPES   : Preprocessor-defined constants and pseudo-opaque data
+ *                        types.
+ *   JEMALLOC_H_STRUCTS : Data structures.
+ *   JEMALLOC_H_EXTERNS : Extern data declarations and function prototypes.
+ *   JEMALLOC_H_INLINES : Inline functions.
+ *
+ * We're moving toward a world in which the dependencies are explicit; each file
+ * will #include the headers it depends on (rather than relying on them being
+ * implicitly available via this file including every header file in the
+ * project).
+ *
+ * We're now in an intermediate state: we've broken up the header files to avoid
+ * having to include each one multiple times, but have not yet moved the
+ * dependency information into the header files (i.e. we still rely on the
+ * ordering in this file to ensure all a header's dependencies are available in
+ * its translation unit).  Each component is now broken up into multiple header
+ * files, corresponding to the sections above (e.g. instead of "foo.h", we now
+ * have "foo_types.h", "foo_structs.h", "foo_externs.h", "foo_inlines.h").
+ *
+ * Those files which have been converted to explicitly include their
+ * inter-component dependencies are now in the initial HERMETIC HEADERS
+ * section.  All headers may still rely on jemalloc_preamble.h (which, by fiat,
+ * must be included first in every translation unit) for system headers and
+ * global jemalloc definitions, however.
+ */
+
+/******************************************************************************/
+/* TYPES */
+/******************************************************************************/
+
+#include "jemalloc/internal/arena_types.h"
+#include "jemalloc/internal/tcache_types.h"
+#include "jemalloc/internal/prof_types.h"
+
+/******************************************************************************/
+/* STRUCTS */
+/******************************************************************************/
+
+#include "jemalloc/internal/prof_structs.h"
+#include "jemalloc/internal/arena_structs.h"
+#include "jemalloc/internal/tcache_structs.h"
+#include "jemalloc/internal/background_thread_structs.h"
+
+/******************************************************************************/
+/* EXTERNS */
+/******************************************************************************/
+
+#include "jemalloc/internal/jemalloc_internal_externs.h"
+#include "jemalloc/internal/arena_externs.h"
+#include "jemalloc/internal/large_externs.h"
+#include "jemalloc/internal/tcache_externs.h"
+#include "jemalloc/internal/prof_externs.h"
+#include "jemalloc/internal/background_thread_externs.h"
+
+/******************************************************************************/
+/* INLINES */
+/******************************************************************************/
+
+#include "jemalloc/internal/jemalloc_internal_inlines_a.h"
+/*
+ * Include portions of arena code interleaved with tcache code in order to
+ * resolve circular dependencies.
+ */
+#include "jemalloc/internal/arena_inlines_a.h"
+#include "jemalloc/internal/jemalloc_internal_inlines_b.h"
+#include "jemalloc/internal/tcache_inlines.h"
+#include "jemalloc/internal/arena_inlines_b.h"
+#include "jemalloc/internal/jemalloc_internal_inlines_c.h"
+#include "jemalloc/internal/prof_inlines.h"
+#include "jemalloc/internal/background_thread_inlines.h"
+
+#endif /* JEMALLOC_INTERNAL_INCLUDES_H */
diff --git a/deps/jemalloc/include/jemalloc/internal/jemalloc_internal_inlines_a.h b/deps/jemalloc/include/jemalloc/internal/jemalloc_internal_inlines_a.h
new file mode 100644
index 0000000..9e27cc3
--- /dev/null
+++ b/deps/jemalloc/include/jemalloc/internal/jemalloc_internal_inlines_a.h
@@ -0,0 +1,122 @@
+#ifndef JEMALLOC_INTERNAL_INLINES_A_H
+#define JEMALLOC_INTERNAL_INLINES_A_H
+
+#include "jemalloc/internal/atomic.h"
+#include "jemalloc/internal/bit_util.h"
+#include "jemalloc/internal/jemalloc_internal_types.h"
+#include "jemalloc/internal/sc.h"
+#include "jemalloc/internal/ticker.h"
+
+JEMALLOC_ALWAYS_INLINE malloc_cpuid_t
+malloc_getcpu(void) {
+	assert(have_percpu_arena);
+#if defined(_WIN32)
+	return GetCurrentProcessorNumber();
+#elif defined(JEMALLOC_HAVE_SCHED_GETCPU)
+	return (malloc_cpuid_t)sched_getcpu();
+#else
+	not_reached();
+	return -1;
+#endif
+}
+
+/* Return the chosen arena index based on current cpu. */
+JEMALLOC_ALWAYS_INLINE unsigned
+percpu_arena_choose(void) {
+	assert(have_percpu_arena && PERCPU_ARENA_ENABLED(opt_percpu_arena));
+
+	malloc_cpuid_t cpuid = malloc_getcpu();
+	assert(cpuid >= 0);
+
+	unsigned arena_ind;
+	if ((opt_percpu_arena == percpu_arena) || ((unsigned)cpuid < ncpus /
+	    2)) {
+		arena_ind = cpuid;
+	} else {
+		assert(opt_percpu_arena == per_phycpu_arena);
+		/* Hyper threads on the same physical CPU share arena. */
+		arena_ind = cpuid - ncpus / 2;
+	}
+
+	return arena_ind;
+}
+
+/* Return the limit of percpu auto arena range, i.e. arenas[0...ind_limit). */
+JEMALLOC_ALWAYS_INLINE unsigned
+percpu_arena_ind_limit(percpu_arena_mode_t mode) {
+	assert(have_percpu_arena && PERCPU_ARENA_ENABLED(mode));
+	if (mode == per_phycpu_arena && ncpus > 1) {
+		if (ncpus % 2) {
+			/* This likely means a misconfig. */
+			return ncpus / 2 + 1;
+		}
+		return ncpus / 2;
+	} else {
+		return ncpus;
+	}
+}
+
+static inline arena_t *
+arena_get(tsdn_t *tsdn, unsigned ind, bool init_if_missing) {
+	arena_t *ret;
+
+	assert(ind < MALLOCX_ARENA_LIMIT);
+
+	ret = (arena_t *)atomic_load_p(&arenas[ind], ATOMIC_ACQUIRE);
+	if (unlikely(ret == NULL)) {
+		if (init_if_missing) {
+			ret = arena_init(tsdn, ind, &arena_config_default);
+		}
+	}
+	return ret;
+}
+
+JEMALLOC_ALWAYS_INLINE bool
+tcache_available(tsd_t *tsd) {
+	/*
+	 * Thread specific auto tcache might be unavailable if: 1) during tcache
+	 * initialization, or 2) disabled through thread.tcache.enabled mallctl
+	 * or config options.  This check covers all cases.
+	 */
+	if (likely(tsd_tcache_enabled_get(tsd))) {
+		/* Associated arena == NULL implies tcache init in progress. */
+		if (config_debug && tsd_tcache_slowp_get(tsd)->arena != NULL) {
+			tcache_assert_initialized(tsd_tcachep_get(tsd));
+		}
+		return true;
+	}
+
+	return false;
+}
+
+JEMALLOC_ALWAYS_INLINE tcache_t *
+tcache_get(tsd_t *tsd) {
+	if (!tcache_available(tsd)) {
+		return NULL;
+	}
+
+	return tsd_tcachep_get(tsd);
+}
+
+JEMALLOC_ALWAYS_INLINE tcache_slow_t *
+tcache_slow_get(tsd_t *tsd) {
+	if (!tcache_available(tsd)) {
+		return NULL;
+	}
+
+	return tsd_tcache_slowp_get(tsd);
+}
+
+static inline void
+pre_reentrancy(tsd_t *tsd, arena_t *arena) {
+	/* arena is the current context.  Reentry from a0 is not allowed. */
+	assert(arena != arena_get(tsd_tsdn(tsd), 0, false));
+	tsd_pre_reentrancy_raw(tsd);
+}
+
+static inline void
+post_reentrancy(tsd_t *tsd) {
+	tsd_post_reentrancy_raw(tsd);
+}
+
+#endif /* JEMALLOC_INTERNAL_INLINES_A_H */
diff --git a/deps/jemalloc/include/jemalloc/internal/jemalloc_internal_inlines_b.h b/deps/jemalloc/include/jemalloc/internal/jemalloc_internal_inlines_b.h
new file mode 100644
index 0000000..152f8a0
--- /dev/null
+++ b/deps/jemalloc/include/jemalloc/internal/jemalloc_internal_inlines_b.h
@@ -0,0 +1,103 @@
+#ifndef JEMALLOC_INTERNAL_INLINES_B_H
+#define JEMALLOC_INTERNAL_INLINES_B_H
+
+#include "jemalloc/internal/extent.h"
+
+static inline void
+percpu_arena_update(tsd_t *tsd, unsigned cpu) {
+	assert(have_percpu_arena);
+	arena_t *oldarena = tsd_arena_get(tsd);
+	assert(oldarena != NULL);
+	unsigned oldind = arena_ind_get(oldarena);
+
+	if (oldind != cpu) {
+		unsigned newind = cpu;
+		arena_t *newarena = arena_get(tsd_tsdn(tsd), newind, true);
+		assert(newarena != NULL);
+
+		/* Set new arena/tcache associations. */
+		arena_migrate(tsd, oldarena, newarena);
+		tcache_t *tcache = tcache_get(tsd);
+		if (tcache != NULL) {
+			tcache_slow_t *tcache_slow = tsd_tcache_slowp_get(tsd);
+			tcache_arena_reassociate(tsd_tsdn(tsd), tcache_slow,
+			    tcache, newarena);
+		}
+	}
+}
+
+
+/* Choose an arena based on a per-thread value. */
+static inline arena_t *
+arena_choose_impl(tsd_t *tsd, arena_t *arena, bool internal) {
+	arena_t *ret;
+
+	if (arena != NULL) {
+		return arena;
+	}
+
+	/* During reentrancy, arena 0 is the safest bet. */
+	if (unlikely(tsd_reentrancy_level_get(tsd) > 0)) {
+		return arena_get(tsd_tsdn(tsd), 0, true);
+	}
+
+	ret = internal ? tsd_iarena_get(tsd) : tsd_arena_get(tsd);
+	if (unlikely(ret == NULL)) {
+		ret = arena_choose_hard(tsd, internal);
+		assert(ret);
+		if (tcache_available(tsd)) {
+			tcache_slow_t *tcache_slow = tsd_tcache_slowp_get(tsd);
+			tcache_t *tcache = tsd_tcachep_get(tsd);
+			if (tcache_slow->arena != NULL) {
+				/* See comments in tsd_tcache_data_init().*/
+				assert(tcache_slow->arena ==
+				    arena_get(tsd_tsdn(tsd), 0, false));
+				if (tcache_slow->arena != ret) {
+					tcache_arena_reassociate(tsd_tsdn(tsd),
+					    tcache_slow, tcache, ret);
+				}
+			} else {
+				tcache_arena_associate(tsd_tsdn(tsd),
+				    tcache_slow, tcache, ret);
+			}
+		}
+	}
+
+	/*
+	 * Note that for percpu arena, if the current arena is outside of the
+	 * auto percpu arena range, (i.e. thread is assigned to a manually
+	 * managed arena), then percpu arena is skipped.
+	 */
+	if (have_percpu_arena && PERCPU_ARENA_ENABLED(opt_percpu_arena) &&
+	    !internal && (arena_ind_get(ret) <
+	    percpu_arena_ind_limit(opt_percpu_arena)) && (ret->last_thd !=
+	    tsd_tsdn(tsd))) {
+		unsigned ind = percpu_arena_choose();
+		if (arena_ind_get(ret) != ind) {
+			percpu_arena_update(tsd, ind);
+			ret = tsd_arena_get(tsd);
+		}
+		ret->last_thd = tsd_tsdn(tsd);
+	}
+
+	return ret;
+}
+
+static inline arena_t *
+arena_choose(tsd_t *tsd, arena_t *arena) {
+	return arena_choose_impl(tsd, arena, false);
+}
+
+static inline arena_t *
+arena_ichoose(tsd_t *tsd, arena_t *arena) {
+	return arena_choose_impl(tsd, arena, true);
+}
+
+static inline bool
+arena_is_auto(arena_t *arena) {
+	assert(narenas_auto > 0);
+
+	return (arena_ind_get(arena) < manual_arena_base);
+}
+
+#endif /* JEMALLOC_INTERNAL_INLINES_B_H */
diff --git a/deps/jemalloc/include/jemalloc/internal/jemalloc_internal_inlines_c.h b/deps/jemalloc/include/jemalloc/internal/jemalloc_internal_inlines_c.h
new file mode 100644
index 0000000..2cd7e7c
--- /dev/null
+++ b/deps/jemalloc/include/jemalloc/internal/jemalloc_internal_inlines_c.h
@@ -0,0 +1,391 @@
+#ifndef JEMALLOC_INTERNAL_INLINES_C_H
+#define JEMALLOC_INTERNAL_INLINES_C_H
+
+#include "jemalloc/internal/hook.h"
+#include "jemalloc/internal/jemalloc_internal_types.h"
+#include "jemalloc/internal/log.h"
+#include "jemalloc/internal/sz.h"
+#include "jemalloc/internal/thread_event.h"
+#include "jemalloc/internal/witness.h"
+
+/*
+ * Translating the names of the 'i' functions:
+ *   Abbreviations used in the first part of the function name (before
+ *   alloc/dalloc) describe what that function accomplishes:
+ *     a: arena (query)
+ *     s: size (query, or sized deallocation)
+ *     e: extent (query)
+ *     p: aligned (allocates)
+ *     vs: size (query, without knowing that the pointer is into the heap)
+ *     r: rallocx implementation
+ *     x: xallocx implementation
+ *   Abbreviations used in the second part of the function name (after
+ *   alloc/dalloc) describe the arguments it takes
+ *     z: whether to return zeroed memory
+ *     t: accepts a tcache_t * parameter
+ *     m: accepts an arena_t * parameter
+ */
+
+JEMALLOC_ALWAYS_INLINE arena_t *
+iaalloc(tsdn_t *tsdn, const void *ptr) {
+	assert(ptr != NULL);
+
+	return arena_aalloc(tsdn, ptr);
+}
+
+JEMALLOC_ALWAYS_INLINE size_t
+isalloc(tsdn_t *tsdn, const void *ptr) {
+	assert(ptr != NULL);
+
+	return arena_salloc(tsdn, ptr);
+}
+
+JEMALLOC_ALWAYS_INLINE void *
+iallocztm(tsdn_t *tsdn, size_t size, szind_t ind, bool zero, tcache_t *tcache,
+    bool is_internal, arena_t *arena, bool slow_path) {
+	void *ret;
+
+	assert(!is_internal || tcache == NULL);
+	assert(!is_internal || arena == NULL || arena_is_auto(arena));
+	if (!tsdn_null(tsdn) && tsd_reentrancy_level_get(tsdn_tsd(tsdn)) == 0) {
+		witness_assert_depth_to_rank(tsdn_witness_tsdp_get(tsdn),
+		    WITNESS_RANK_CORE, 0);
+	}
+
+	ret = arena_malloc(tsdn, arena, size, ind, zero, tcache, slow_path);
+	if (config_stats && is_internal && likely(ret != NULL)) {
+		arena_internal_add(iaalloc(tsdn, ret), isalloc(tsdn, ret));
+	}
+	return ret;
+}
+
+JEMALLOC_ALWAYS_INLINE void *
+ialloc(tsd_t *tsd, size_t size, szind_t ind, bool zero, bool slow_path) {
+	return iallocztm(tsd_tsdn(tsd), size, ind, zero, tcache_get(tsd), false,
+	    NULL, slow_path);
+}
+
+JEMALLOC_ALWAYS_INLINE void *
+ipallocztm(tsdn_t *tsdn, size_t usize, size_t alignment, bool zero,
+    tcache_t *tcache, bool is_internal, arena_t *arena) {
+	void *ret;
+
+	assert(usize != 0);
+	assert(usize == sz_sa2u(usize, alignment));
+	assert(!is_internal || tcache == NULL);
+	assert(!is_internal || arena == NULL || arena_is_auto(arena));
+	witness_assert_depth_to_rank(tsdn_witness_tsdp_get(tsdn),
+	    WITNESS_RANK_CORE, 0);
+
+	ret = arena_palloc(tsdn, arena, usize, alignment, zero, tcache);
+	assert(ALIGNMENT_ADDR2BASE(ret, alignment) == ret);
+	if (config_stats && is_internal && likely(ret != NULL)) {
+		arena_internal_add(iaalloc(tsdn, ret), isalloc(tsdn, ret));
+	}
+	return ret;
+}
+
+JEMALLOC_ALWAYS_INLINE void *
+ipalloct(tsdn_t *tsdn, size_t usize, size_t alignment, bool zero,
+    tcache_t *tcache, arena_t *arena) {
+	return ipallocztm(tsdn, usize, alignment, zero, tcache, false, arena);
+}
+
+JEMALLOC_ALWAYS_INLINE void *
+ipalloc(tsd_t *tsd, size_t usize, size_t alignment, bool zero) {
+	return ipallocztm(tsd_tsdn(tsd), usize, alignment, zero,
+	    tcache_get(tsd), false, NULL);
+}
+
+JEMALLOC_ALWAYS_INLINE size_t
+ivsalloc(tsdn_t *tsdn, const void *ptr) {
+	return arena_vsalloc(tsdn, ptr);
+}
+
+JEMALLOC_ALWAYS_INLINE void
+idalloctm(tsdn_t *tsdn, void *ptr, tcache_t *tcache,
+    emap_alloc_ctx_t *alloc_ctx, bool is_internal, bool slow_path) {
+	assert(ptr != NULL);
+	assert(!is_internal || tcache == NULL);
+	assert(!is_internal || arena_is_auto(iaalloc(tsdn, ptr)));
+	witness_assert_depth_to_rank(tsdn_witness_tsdp_get(tsdn),
+	    WITNESS_RANK_CORE, 0);
+	if (config_stats && is_internal) {
+		arena_internal_sub(iaalloc(tsdn, ptr), isalloc(tsdn, ptr));
+	}
+	if (!is_internal && !tsdn_null(tsdn) &&
+	    tsd_reentrancy_level_get(tsdn_tsd(tsdn)) != 0) {
+		assert(tcache == NULL);
+	}
+	arena_dalloc(tsdn, ptr, tcache, alloc_ctx, slow_path);
+}
+
+JEMALLOC_ALWAYS_INLINE void
+idalloc(tsd_t *tsd, void *ptr) {
+	idalloctm(tsd_tsdn(tsd), ptr, tcache_get(tsd), NULL, false, true);
+}
+
+JEMALLOC_ALWAYS_INLINE void
+isdalloct(tsdn_t *tsdn, void *ptr, size_t size, tcache_t *tcache,
+    emap_alloc_ctx_t *alloc_ctx, bool slow_path) {
+	witness_assert_depth_to_rank(tsdn_witness_tsdp_get(tsdn),
+	    WITNESS_RANK_CORE, 0);
+	arena_sdalloc(tsdn, ptr, size, tcache, alloc_ctx, slow_path);
+}
+
+JEMALLOC_ALWAYS_INLINE void *
+iralloct_realign(tsdn_t *tsdn, void *ptr, size_t oldsize, size_t size,
+    size_t alignment, bool zero, tcache_t *tcache, arena_t *arena,
+    hook_ralloc_args_t *hook_args) {
+	witness_assert_depth_to_rank(tsdn_witness_tsdp_get(tsdn),
+	    WITNESS_RANK_CORE, 0);
+	void *p;
+	size_t usize, copysize;
+
+	usize = sz_sa2u(size, alignment);
+	if (unlikely(usize == 0 || usize > SC_LARGE_MAXCLASS)) {
+		return NULL;
+	}
+	p = ipalloct(tsdn, usize, alignment, zero, tcache, arena);
+	if (p == NULL) {
+		return NULL;
+	}
+	/*
+	 * Copy at most size bytes (not size+extra), since the caller has no
+	 * expectation that the extra bytes will be reliably preserved.
+	 */
+	copysize = (size < oldsize) ? size : oldsize;
+	memcpy(p, ptr, copysize);
+	hook_invoke_alloc(hook_args->is_realloc
+	    ? hook_alloc_realloc : hook_alloc_rallocx, p, (uintptr_t)p,
+	    hook_args->args);
+	hook_invoke_dalloc(hook_args->is_realloc
+	    ? hook_dalloc_realloc : hook_dalloc_rallocx, ptr, hook_args->args);
+	isdalloct(tsdn, ptr, oldsize, tcache, NULL, true);
+	return p;
+}
+
+/*
+ * is_realloc threads through the knowledge of whether or not this call comes
+ * from je_realloc (as opposed to je_rallocx); this ensures that we pass the
+ * correct entry point into any hooks.
+ * Note that these functions are all force-inlined, so no actual bool gets
+ * passed-around anywhere.
+ */
+JEMALLOC_ALWAYS_INLINE void *
+iralloct(tsdn_t *tsdn, void *ptr, size_t oldsize, size_t size, size_t alignment,
+    bool zero, tcache_t *tcache, arena_t *arena, hook_ralloc_args_t *hook_args)
+{
+	assert(ptr != NULL);
+	assert(size != 0);
+	witness_assert_depth_to_rank(tsdn_witness_tsdp_get(tsdn),
+	    WITNESS_RANK_CORE, 0);
+
+	if (alignment != 0 && ((uintptr_t)ptr & ((uintptr_t)alignment-1))
+	    != 0) {
+		/*
+		 * Existing object alignment is inadequate; allocate new space
+		 * and copy.
+		 */
+		return iralloct_realign(tsdn, ptr, oldsize, size, alignment,
+		    zero, tcache, arena, hook_args);
+	}
+
+	return arena_ralloc(tsdn, arena, ptr, oldsize, size, alignment, zero,
+	    tcache, hook_args);
+}
+
+JEMALLOC_ALWAYS_INLINE void *
+iralloc(tsd_t *tsd, void *ptr, size_t oldsize, size_t size, size_t alignment,
+    bool zero, hook_ralloc_args_t *hook_args) {
+	return iralloct(tsd_tsdn(tsd), ptr, oldsize, size, alignment, zero,
+	    tcache_get(tsd), NULL, hook_args);
+}
+
+JEMALLOC_ALWAYS_INLINE bool
+ixalloc(tsdn_t *tsdn, void *ptr, size_t oldsize, size_t size, size_t extra,
+    size_t alignment, bool zero, size_t *newsize) {
+	assert(ptr != NULL);
+	assert(size != 0);
+	witness_assert_depth_to_rank(tsdn_witness_tsdp_get(tsdn),
+	    WITNESS_RANK_CORE, 0);
+
+	if (alignment != 0 && ((uintptr_t)ptr & ((uintptr_t)alignment-1))
+	    != 0) {
+		/* Existing object alignment is inadequate. */
+		*newsize = oldsize;
+		return true;
+	}
+
+	return arena_ralloc_no_move(tsdn, ptr, oldsize, size, extra, zero,
+	    newsize);
+}
+
+JEMALLOC_ALWAYS_INLINE void
+fastpath_success_finish(tsd_t *tsd, uint64_t allocated_after,
+    cache_bin_t *bin, void *ret) {
+	thread_allocated_set(tsd, allocated_after);
+	if (config_stats) {
+		bin->tstats.nrequests++;
+	}
+
+	LOG("core.malloc.exit", "result: %p", ret);
+}
+
+JEMALLOC_ALWAYS_INLINE bool
+malloc_initialized(void) {
+	return (malloc_init_state == malloc_init_initialized);
+}
+
+/*
+ * malloc() fastpath.  Included here so that we can inline it into operator new;
+ * function call overhead there is non-negligible as a fraction of total CPU in
+ * allocation-heavy C++ programs.  We take the fallback alloc to allow malloc
+ * (which can return NULL) to differ in its behavior from operator new (which
+ * can't).  It matches the signature of malloc / operator new so that we can
+ * tail-call the fallback allocator, allowing us to avoid setting up the call
+ * frame in the common case.
+ *
+ * Fastpath assumes size <= SC_LOOKUP_MAXCLASS, and that we hit
+ * tcache.  If either of these is false, we tail-call to the slowpath,
+ * malloc_default().  Tail-calling is used to avoid any caller-saved
+ * registers.
+ *
+ * fastpath supports ticker and profiling, both of which will also
+ * tail-call to the slowpath if they fire.
+ */
+JEMALLOC_ALWAYS_INLINE void *
+imalloc_fastpath(size_t size, void *(fallback_alloc)(size_t)) {
+	LOG("core.malloc.entry", "size: %zu", size);
+	if (tsd_get_allocates() && unlikely(!malloc_initialized())) {
+		return fallback_alloc(size);
+	}
+
+	tsd_t *tsd = tsd_get(false);
+	if (unlikely((size > SC_LOOKUP_MAXCLASS) || tsd == NULL)) {
+		return fallback_alloc(size);
+	}
+	/*
+	 * The code below till the branch checking the next_event threshold may
+	 * execute before malloc_init(), in which case the threshold is 0 to
+	 * trigger slow path and initialization.
+	 *
+	 * Note that when uninitialized, only the fast-path variants of the sz /
+	 * tsd facilities may be called.
+	 */
+	szind_t ind;
+	/*
+	 * The thread_allocated counter in tsd serves as a general purpose
+	 * accumulator for bytes of allocation to trigger different types of
+	 * events.  usize is always needed to advance thread_allocated, though
+	 * it's not always needed in the core allocation logic.
+	 */
+	size_t usize;
+	sz_size2index_usize_fastpath(size, &ind, &usize);
+	/* Fast path relies on size being a bin. */
+	assert(ind < SC_NBINS);
+	assert((SC_LOOKUP_MAXCLASS < SC_SMALL_MAXCLASS) &&
+	    (size <= SC_SMALL_MAXCLASS));
+
+	uint64_t allocated, threshold;
+	te_malloc_fastpath_ctx(tsd, &allocated, &threshold);
+	uint64_t allocated_after = allocated + usize;
+	/*
+	 * The ind and usize might be uninitialized (or partially) before
+	 * malloc_init().  The assertions check for: 1) full correctness (usize
+	 * & ind) when initialized; and 2) guaranteed slow-path (threshold == 0)
+	 * when !initialized.
+	 */
+	if (!malloc_initialized()) {
+		assert(threshold == 0);
+	} else {
+		assert(ind == sz_size2index(size));
+		assert(usize > 0 && usize == sz_index2size(ind));
+	}
+	/*
+	 * Check for events and tsd non-nominal (fast_threshold will be set to
+	 * 0) in a single branch.
+	 */
+	if (unlikely(allocated_after >= threshold)) {
+		return fallback_alloc(size);
+	}
+	assert(tsd_fast(tsd));
+
+	tcache_t *tcache = tsd_tcachep_get(tsd);
+	assert(tcache == tcache_get(tsd));
+	cache_bin_t *bin = &tcache->bins[ind];
+	bool tcache_success;
+	void *ret;
+
+	/*
+	 * We split up the code this way so that redundant low-water
+	 * computation doesn't happen on the (more common) case in which we
+	 * don't touch the low water mark.  The compiler won't do this
+	 * duplication on its own.
+	 */
+	ret = cache_bin_alloc_easy(bin, &tcache_success);
+	if (tcache_success) {
+		fastpath_success_finish(tsd, allocated_after, bin, ret);
+		return ret;
+	}
+	ret = cache_bin_alloc(bin, &tcache_success);
+	if (tcache_success) {
+		fastpath_success_finish(tsd, allocated_after, bin, ret);
+		return ret;
+	}
+
+	return fallback_alloc(size);
+}
+
+JEMALLOC_ALWAYS_INLINE int
+iget_defrag_hint(tsdn_t *tsdn, void* ptr) {
+	int defrag = 0;
+	emap_alloc_ctx_t alloc_ctx;
+	emap_alloc_ctx_lookup(tsdn, &arena_emap_global, ptr, &alloc_ctx);
+	if (likely(alloc_ctx.slab)) {
+		/* Small allocation. */
+		edata_t *slab = emap_edata_lookup(tsdn, &arena_emap_global, ptr);
+		arena_t *arena = arena_get_from_edata(slab);
+		szind_t binind = edata_szind_get(slab);
+		unsigned binshard = edata_binshard_get(slab);
+		bin_t *bin = arena_get_bin(arena, binind, binshard);
+		malloc_mutex_lock(tsdn, &bin->lock);
+		arena_dalloc_bin_locked_info_t info;
+		arena_dalloc_bin_locked_begin(&info, binind);
+		/* Don't bother moving allocations from the slab currently used for new allocations */
+		if (slab != bin->slabcur) {
+			int free_in_slab = edata_nfree_get(slab);
+			if (free_in_slab) {
+				const bin_info_t *bin_info = &bin_infos[binind];
+				/* Find number of non-full slabs and the number of regs in them */
+				unsigned long curslabs = 0;
+				size_t curregs = 0;
+				/* Run on all bin shards (usually just one) */
+				for (uint32_t i=0; i< bin_info->n_shards; i++) {
+					bin_t *bb = arena_get_bin(arena, binind, i);
+					curslabs += bb->stats.nonfull_slabs;
+					/* Deduct the regs in full slabs (they're not part of the game) */
+					unsigned long full_slabs = bb->stats.curslabs - bb->stats.nonfull_slabs;
+					curregs += bb->stats.curregs - full_slabs * bin_info->nregs;
+					if (bb->slabcur) {
+						/* Remove slabcur from the overall utilization (not a candidate to nove from) */
+						curregs -= bin_info->nregs - edata_nfree_get(bb->slabcur);
+						curslabs -= 1;
+					}
+				}
+				/* Compare the utilization ratio of the slab in question to the total average
+				 * among non-full slabs. To avoid precision loss in division, we do that by
+				 * extrapolating the usage of the slab as if all slabs have the same usage.
+				 * If this slab is less used than the average, we'll prefer to move the data
+				 * to hopefully more used ones. To avoid stagnation when all slabs have the same
+				 * utilization, we give additional 12.5% weight to the decision to defrag. */
+				defrag = (bin_info->nregs - free_in_slab) * curslabs <= curregs + curregs / 8;
+			}
+		}
+		arena_dalloc_bin_locked_finish(tsdn, arena, bin, &info);
+		malloc_mutex_unlock(tsdn, &bin->lock);
+	}
+	return defrag;
+}
+
+#endif /* JEMALLOC_INTERNAL_INLINES_C_H */
diff --git a/deps/jemalloc/include/jemalloc/internal/jemalloc_internal_macros.h b/deps/jemalloc/include/jemalloc/internal/jemalloc_internal_macros.h
new file mode 100644
index 0000000..e97b5f9
--- /dev/null
+++ b/deps/jemalloc/include/jemalloc/internal/jemalloc_internal_macros.h
@@ -0,0 +1,111 @@
+#ifndef JEMALLOC_INTERNAL_MACROS_H
+#define JEMALLOC_INTERNAL_MACROS_H
+
+#ifdef JEMALLOC_DEBUG
+#  define JEMALLOC_ALWAYS_INLINE static inline
+#else
+#  ifdef _MSC_VER
+#    define JEMALLOC_ALWAYS_INLINE static __forceinline
+#  else
+#    define JEMALLOC_ALWAYS_INLINE JEMALLOC_ATTR(always_inline) static inline
+#  endif
+#endif
+#ifdef _MSC_VER
+#  define inline _inline
+#endif
+
+#define UNUSED JEMALLOC_ATTR(unused)
+
+#define ZU(z)	((size_t)z)
+#define ZD(z)	((ssize_t)z)
+#define QU(q)	((uint64_t)q)
+#define QD(q)	((int64_t)q)
+
+#define KZU(z)	ZU(z##ULL)
+#define KZD(z)	ZD(z##LL)
+#define KQU(q)	QU(q##ULL)
+#define KQD(q)	QI(q##LL)
+
+#ifndef __DECONST
+#  define	__DECONST(type, var)	((type)(uintptr_t)(const void *)(var))
+#endif
+
+#if !defined(JEMALLOC_HAS_RESTRICT) || defined(__cplusplus)
+#  define restrict
+#endif
+
+/* Various function pointers are static and immutable except during testing. */
+#ifdef JEMALLOC_JET
+#  define JET_MUTABLE
+#else
+#  define JET_MUTABLE const
+#endif
+
+#define JEMALLOC_VA_ARGS_HEAD(head, ...) head
+#define JEMALLOC_VA_ARGS_TAIL(head, ...) __VA_ARGS__
+
+/* Diagnostic suppression macros */
+#if defined(_MSC_VER) && !defined(__clang__)
+#  define JEMALLOC_DIAGNOSTIC_PUSH __pragma(warning(push))
+#  define JEMALLOC_DIAGNOSTIC_POP __pragma(warning(pop))
+#  define JEMALLOC_DIAGNOSTIC_IGNORE(W) __pragma(warning(disable:W))
+#  define JEMALLOC_DIAGNOSTIC_IGNORE_MISSING_STRUCT_FIELD_INITIALIZERS
+#  define JEMALLOC_DIAGNOSTIC_IGNORE_TYPE_LIMITS
+#  define JEMALLOC_DIAGNOSTIC_IGNORE_ALLOC_SIZE_LARGER_THAN
+#  define JEMALLOC_DIAGNOSTIC_DISABLE_SPURIOUS
+/* #pragma GCC diagnostic first appeared in gcc 4.6. */
+#elif (defined(__GNUC__) && ((__GNUC__ > 4) || ((__GNUC__ == 4) && \
+  (__GNUC_MINOR__ > 5)))) || defined(__clang__)
+/*
+ * The JEMALLOC_PRAGMA__ macro is an implementation detail of the GCC and Clang
+ * diagnostic suppression macros and should not be used anywhere else.
+ */
+#  define JEMALLOC_PRAGMA__(X) _Pragma(#X)
+#  define JEMALLOC_DIAGNOSTIC_PUSH JEMALLOC_PRAGMA__(GCC diagnostic push)
+#  define JEMALLOC_DIAGNOSTIC_POP JEMALLOC_PRAGMA__(GCC diagnostic pop)
+#  define JEMALLOC_DIAGNOSTIC_IGNORE(W) \
+     JEMALLOC_PRAGMA__(GCC diagnostic ignored W)
+
+/*
+ * The -Wmissing-field-initializers warning is buggy in GCC versions < 5.1 and
+ * all clang versions up to version 7 (currently trunk, unreleased).  This macro
+ * suppresses the warning for the affected compiler versions only.
+ */
+#  if ((defined(__GNUC__) && !defined(__clang__)) && (__GNUC__ < 5)) || \
+     defined(__clang__)
+#    define JEMALLOC_DIAGNOSTIC_IGNORE_MISSING_STRUCT_FIELD_INITIALIZERS  \
+          JEMALLOC_DIAGNOSTIC_IGNORE("-Wmissing-field-initializers")
+#  else
+#    define JEMALLOC_DIAGNOSTIC_IGNORE_MISSING_STRUCT_FIELD_INITIALIZERS
+#  endif
+
+#  define JEMALLOC_DIAGNOSTIC_IGNORE_TYPE_LIMITS  \
+     JEMALLOC_DIAGNOSTIC_IGNORE("-Wtype-limits")
+#  define JEMALLOC_DIAGNOSTIC_IGNORE_UNUSED_PARAMETER \
+     JEMALLOC_DIAGNOSTIC_IGNORE("-Wunused-parameter")
+#  if defined(__GNUC__) && !defined(__clang__) && (__GNUC__ >= 7)
+#    define JEMALLOC_DIAGNOSTIC_IGNORE_ALLOC_SIZE_LARGER_THAN \
+       JEMALLOC_DIAGNOSTIC_IGNORE("-Walloc-size-larger-than=")
+#  else
+#    define JEMALLOC_DIAGNOSTIC_IGNORE_ALLOC_SIZE_LARGER_THAN
+#  endif
+#  define JEMALLOC_DIAGNOSTIC_DISABLE_SPURIOUS \
+  JEMALLOC_DIAGNOSTIC_PUSH \
+  JEMALLOC_DIAGNOSTIC_IGNORE_UNUSED_PARAMETER
+#else
+#  define JEMALLOC_DIAGNOSTIC_PUSH
+#  define JEMALLOC_DIAGNOSTIC_POP
+#  define JEMALLOC_DIAGNOSTIC_IGNORE(W)
+#  define JEMALLOC_DIAGNOSTIC_IGNORE_MISSING_STRUCT_FIELD_INITIALIZERS
+#  define JEMALLOC_DIAGNOSTIC_IGNORE_TYPE_LIMITS
+#  define JEMALLOC_DIAGNOSTIC_IGNORE_ALLOC_SIZE_LARGER_THAN
+#  define JEMALLOC_DIAGNOSTIC_DISABLE_SPURIOUS
+#endif
+
+/*
+ * Disables spurious diagnostics for all headers.  Since these headers are not
+ * included by users directly, it does not affect their diagnostic settings.
+ */
+JEMALLOC_DIAGNOSTIC_DISABLE_SPURIOUS
+
+#endif /* JEMALLOC_INTERNAL_MACROS_H */
diff --git a/deps/jemalloc/include/jemalloc/internal/jemalloc_internal_types.h b/deps/jemalloc/include/jemalloc/internal/jemalloc_internal_types.h
new file mode 100644
index 0000000..62c2b59
--- /dev/null
+++ b/deps/jemalloc/include/jemalloc/internal/jemalloc_internal_types.h
@@ -0,0 +1,130 @@
+#ifndef JEMALLOC_INTERNAL_TYPES_H
+#define JEMALLOC_INTERNAL_TYPES_H
+
+#include "jemalloc/internal/quantum.h"
+
+/* Processor / core id type. */
+typedef int malloc_cpuid_t;
+
+/* When realloc(non-null-ptr, 0) is called, what happens? */
+enum zero_realloc_action_e {
+	/* Realloc(ptr, 0) is free(ptr); return malloc(0); */
+	zero_realloc_action_alloc = 0,
+	/* Realloc(ptr, 0) is free(ptr); */
+	zero_realloc_action_free = 1,
+	/* Realloc(ptr, 0) aborts. */
+	zero_realloc_action_abort = 2
+};
+typedef enum zero_realloc_action_e zero_realloc_action_t;
+
+/* Signature of write callback. */
+typedef void (write_cb_t)(void *, const char *);
+
+enum malloc_init_e {
+	malloc_init_uninitialized	= 3,
+	malloc_init_a0_initialized	= 2,
+	malloc_init_recursible		= 1,
+	malloc_init_initialized		= 0 /* Common case --> jnz. */
+};
+typedef enum malloc_init_e malloc_init_t;
+
+/*
+ * Flags bits:
+ *
+ * a: arena
+ * t: tcache
+ * 0: unused
+ * z: zero
+ * n: alignment
+ *
+ * aaaaaaaa aaaatttt tttttttt 0znnnnnn
+ */
+#define MALLOCX_ARENA_BITS	12
+#define MALLOCX_TCACHE_BITS	12
+#define MALLOCX_LG_ALIGN_BITS	6
+#define MALLOCX_ARENA_SHIFT	20
+#define MALLOCX_TCACHE_SHIFT	8
+#define MALLOCX_ARENA_MASK \
+    (((1 << MALLOCX_ARENA_BITS) - 1) << MALLOCX_ARENA_SHIFT)
+/* NB: Arena index bias decreases the maximum number of arenas by 1. */
+#define MALLOCX_ARENA_LIMIT	((1 << MALLOCX_ARENA_BITS) - 1)
+#define MALLOCX_TCACHE_MASK \
+    (((1 << MALLOCX_TCACHE_BITS) - 1) << MALLOCX_TCACHE_SHIFT)
+#define MALLOCX_TCACHE_MAX	((1 << MALLOCX_TCACHE_BITS) - 3)
+#define MALLOCX_LG_ALIGN_MASK	((1 << MALLOCX_LG_ALIGN_BITS) - 1)
+/* Use MALLOCX_ALIGN_GET() if alignment may not be specified in flags. */
+#define MALLOCX_ALIGN_GET_SPECIFIED(flags)				\
+    (ZU(1) << (flags & MALLOCX_LG_ALIGN_MASK))
+#define MALLOCX_ALIGN_GET(flags)					\
+    (MALLOCX_ALIGN_GET_SPECIFIED(flags) & (SIZE_T_MAX-1))
+#define MALLOCX_ZERO_GET(flags)						\
+    ((bool)(flags & MALLOCX_ZERO))
+
+#define MALLOCX_TCACHE_GET(flags)					\
+    (((unsigned)((flags & MALLOCX_TCACHE_MASK) >> MALLOCX_TCACHE_SHIFT)) - 2)
+#define MALLOCX_ARENA_GET(flags)					\
+    (((unsigned)(((unsigned)flags) >> MALLOCX_ARENA_SHIFT)) - 1)
+
+/* Smallest size class to support. */
+#define TINY_MIN		(1U << LG_TINY_MIN)
+
+#define LONG			((size_t)(1U << LG_SIZEOF_LONG))
+#define LONG_MASK		(LONG - 1)
+
+/* Return the smallest long multiple that is >= a. */
+#define LONG_CEILING(a)							\
+	(((a) + LONG_MASK) & ~LONG_MASK)
+
+#define SIZEOF_PTR		(1U << LG_SIZEOF_PTR)
+#define PTR_MASK		(SIZEOF_PTR - 1)
+
+/* Return the smallest (void *) multiple that is >= a. */
+#define PTR_CEILING(a)							\
+	(((a) + PTR_MASK) & ~PTR_MASK)
+
+/*
+ * Maximum size of L1 cache line.  This is used to avoid cache line aliasing.
+ * In addition, this controls the spacing of cacheline-spaced size classes.
+ *
+ * CACHELINE cannot be based on LG_CACHELINE because __declspec(align()) can
+ * only handle raw constants.
+ */
+#define LG_CACHELINE		6
+#define CACHELINE		64
+#define CACHELINE_MASK		(CACHELINE - 1)
+
+/* Return the smallest cacheline multiple that is >= s. */
+#define CACHELINE_CEILING(s)						\
+	(((s) + CACHELINE_MASK) & ~CACHELINE_MASK)
+
+/* Return the nearest aligned address at or below a. */
+#define ALIGNMENT_ADDR2BASE(a, alignment)				\
+	((void *)((uintptr_t)(a) & ((~(alignment)) + 1)))
+
+/* Return the offset between a and the nearest aligned address at or below a. */
+#define ALIGNMENT_ADDR2OFFSET(a, alignment)				\
+	((size_t)((uintptr_t)(a) & (alignment - 1)))
+
+/* Return the smallest alignment multiple that is >= s. */
+#define ALIGNMENT_CEILING(s, alignment)					\
+	(((s) + (alignment - 1)) & ((~(alignment)) + 1))
+
+/* Declare a variable-length array. */
+#if __STDC_VERSION__ < 199901L
+#  ifdef _MSC_VER
+#    include <malloc.h>
+#    define alloca _alloca
+#  else
+#    ifdef JEMALLOC_HAS_ALLOCA_H
+#      include <alloca.h>
+#    else
+#      include <stdlib.h>
+#    endif
+#  endif
+#  define VARIABLE_ARRAY(type, name, count) \
+	type *name = alloca(sizeof(type) * (count))
+#else
+#  define VARIABLE_ARRAY(type, name, count) type name[(count)]
+#endif
+
+#endif /* JEMALLOC_INTERNAL_TYPES_H */
diff --git a/deps/jemalloc/include/jemalloc/internal/jemalloc_preamble.h.in b/deps/jemalloc/include/jemalloc/internal/jemalloc_preamble.h.in
new file mode 100644
index 0000000..5ce77d9
--- /dev/null
+++ b/deps/jemalloc/include/jemalloc/internal/jemalloc_preamble.h.in
@@ -0,0 +1,263 @@
+#ifndef JEMALLOC_PREAMBLE_H
+#define JEMALLOC_PREAMBLE_H
+
+#include "jemalloc_internal_defs.h"
+#include "jemalloc/internal/jemalloc_internal_decls.h"
+
+#if defined(JEMALLOC_UTRACE) || defined(JEMALLOC_UTRACE_LABEL)
+#include <sys/ktrace.h>
+#  if defined(JEMALLOC_UTRACE)
+#    define UTRACE_CALL(p, l) utrace(p, l)
+#  else
+#    define UTRACE_CALL(p, l) utrace("jemalloc_process", p, l)
+#    define JEMALLOC_UTRACE
+#  endif
+#endif
+
+#define JEMALLOC_NO_DEMANGLE
+#ifdef JEMALLOC_JET
+#  undef JEMALLOC_IS_MALLOC
+#  define JEMALLOC_N(n) jet_##n
+#  include "jemalloc/internal/public_namespace.h"
+#  define JEMALLOC_NO_RENAME
+#  include "../jemalloc@install_suffix@.h"
+#  undef JEMALLOC_NO_RENAME
+#else
+#  define JEMALLOC_N(n) @private_namespace@##n
+#  include "../jemalloc@install_suffix@.h"
+#endif
+
+#if defined(JEMALLOC_OSATOMIC)
+#include <libkern/OSAtomic.h>
+#endif
+
+#ifdef JEMALLOC_ZONE
+#include <mach/mach_error.h>
+#include <mach/mach_init.h>
+#include <mach/vm_map.h>
+#endif
+
+#include "jemalloc/internal/jemalloc_internal_macros.h"
+
+/*
+ * Note that the ordering matters here; the hook itself is name-mangled.  We
+ * want the inclusion of hooks to happen early, so that we hook as much as
+ * possible.
+ */
+#ifndef JEMALLOC_NO_PRIVATE_NAMESPACE
+#  ifndef JEMALLOC_JET
+#    include "jemalloc/internal/private_namespace.h"
+#  else
+#    include "jemalloc/internal/private_namespace_jet.h"
+#  endif
+#endif
+#include "jemalloc/internal/test_hooks.h"
+
+#ifdef JEMALLOC_DEFINE_MADVISE_FREE
+#  define JEMALLOC_MADV_FREE 8
+#endif
+
+static const bool config_debug =
+#ifdef JEMALLOC_DEBUG
+    true
+#else
+    false
+#endif
+    ;
+static const bool have_dss =
+#ifdef JEMALLOC_DSS
+    true
+#else
+    false
+#endif
+    ;
+static const bool have_madvise_huge =
+#ifdef JEMALLOC_HAVE_MADVISE_HUGE
+    true
+#else
+    false
+#endif
+    ;
+static const bool config_fill =
+#ifdef JEMALLOC_FILL
+    true
+#else
+    false
+#endif
+    ;
+static const bool config_lazy_lock =
+#ifdef JEMALLOC_LAZY_LOCK
+    true
+#else
+    false
+#endif
+    ;
+static const char * const config_malloc_conf = JEMALLOC_CONFIG_MALLOC_CONF;
+static const bool config_prof =
+#ifdef JEMALLOC_PROF
+    true
+#else
+    false
+#endif
+    ;
+static const bool config_prof_libgcc =
+#ifdef JEMALLOC_PROF_LIBGCC
+    true
+#else
+    false
+#endif
+    ;
+static const bool config_prof_libunwind =
+#ifdef JEMALLOC_PROF_LIBUNWIND
+    true
+#else
+    false
+#endif
+    ;
+static const bool maps_coalesce =
+#ifdef JEMALLOC_MAPS_COALESCE
+    true
+#else
+    false
+#endif
+    ;
+static const bool config_stats =
+#ifdef JEMALLOC_STATS
+    true
+#else
+    false
+#endif
+    ;
+static const bool config_tls =
+#ifdef JEMALLOC_TLS
+    true
+#else
+    false
+#endif
+    ;
+static const bool config_utrace =
+#ifdef JEMALLOC_UTRACE
+    true
+#else
+    false
+#endif
+    ;
+static const bool config_xmalloc =
+#ifdef JEMALLOC_XMALLOC
+    true
+#else
+    false
+#endif
+    ;
+static const bool config_cache_oblivious =
+#ifdef JEMALLOC_CACHE_OBLIVIOUS
+    true
+#else
+    false
+#endif
+    ;
+/*
+ * Undocumented, for jemalloc development use only at the moment.  See the note
+ * in jemalloc/internal/log.h.
+ */
+static const bool config_log =
+#ifdef JEMALLOC_LOG
+    true
+#else
+    false
+#endif
+    ;
+/*
+ * Are extra safety checks enabled; things like checking the size of sized
+ * deallocations, double-frees, etc.
+ */
+static const bool config_opt_safety_checks =
+#ifdef JEMALLOC_OPT_SAFETY_CHECKS
+    true
+#elif defined(JEMALLOC_DEBUG)
+    /*
+     * This lets us only guard safety checks by one flag instead of two; fast
+     * checks can guard solely by config_opt_safety_checks and run in debug mode
+     * too.
+     */
+    true
+#else
+    false
+#endif
+    ;
+
+/*
+ * Extra debugging of sized deallocations too onerous to be included in the
+ * general safety checks.
+ */
+static const bool config_opt_size_checks =
+#if defined(JEMALLOC_OPT_SIZE_CHECKS) || defined(JEMALLOC_DEBUG)
+    true
+#else
+    false
+#endif
+    ;
+
+static const bool config_uaf_detection =
+#if defined(JEMALLOC_UAF_DETECTION) || defined(JEMALLOC_DEBUG)
+    true
+#else
+    false
+#endif
+    ;
+
+/* Whether or not the C++ extensions are enabled. */
+static const bool config_enable_cxx =
+#ifdef JEMALLOC_ENABLE_CXX
+    true
+#else
+    false
+#endif
+;
+
+#if defined(_WIN32) || defined(JEMALLOC_HAVE_SCHED_GETCPU)
+/* Currently percpu_arena depends on sched_getcpu. */
+#define JEMALLOC_PERCPU_ARENA
+#endif
+static const bool have_percpu_arena =
+#ifdef JEMALLOC_PERCPU_ARENA
+    true
+#else
+    false
+#endif
+    ;
+/*
+ * Undocumented, and not recommended; the application should take full
+ * responsibility for tracking provenance.
+ */
+static const bool force_ivsalloc =
+#ifdef JEMALLOC_FORCE_IVSALLOC
+    true
+#else
+    false
+#endif
+    ;
+static const bool have_background_thread =
+#ifdef JEMALLOC_BACKGROUND_THREAD
+    true
+#else
+    false
+#endif
+    ;
+static const bool config_high_res_timer =
+#ifdef JEMALLOC_HAVE_CLOCK_REALTIME
+    true
+#else
+    false
+#endif
+    ;
+
+static const bool have_memcntl =
+#ifdef JEMALLOC_HAVE_MEMCNTL
+    true
+#else
+    false
+#endif
+    ;
+
+#endif /* JEMALLOC_PREAMBLE_H */
diff --git a/deps/jemalloc/include/jemalloc/internal/large_externs.h b/deps/jemalloc/include/jemalloc/internal/large_externs.h
new file mode 100644
index 0000000..8e09122
--- /dev/null
+++ b/deps/jemalloc/include/jemalloc/internal/large_externs.h
@@ -0,0 +1,24 @@
+#ifndef JEMALLOC_INTERNAL_LARGE_EXTERNS_H
+#define JEMALLOC_INTERNAL_LARGE_EXTERNS_H
+
+#include "jemalloc/internal/hook.h"
+
+void *large_malloc(tsdn_t *tsdn, arena_t *arena, size_t usize, bool zero);
+void *large_palloc(tsdn_t *tsdn, arena_t *arena, size_t usize, size_t alignment,
+    bool zero);
+bool large_ralloc_no_move(tsdn_t *tsdn, edata_t *edata, size_t usize_min,
+    size_t usize_max, bool zero);
+void *large_ralloc(tsdn_t *tsdn, arena_t *arena, void *ptr, size_t usize,
+    size_t alignment, bool zero, tcache_t *tcache,
+    hook_ralloc_args_t *hook_args);
+
+void large_dalloc_prep_locked(tsdn_t *tsdn, edata_t *edata);
+void large_dalloc_finish(tsdn_t *tsdn, edata_t *edata);
+void large_dalloc(tsdn_t *tsdn, edata_t *edata);
+size_t large_salloc(tsdn_t *tsdn, const edata_t *edata);
+void large_prof_info_get(tsd_t *tsd, edata_t *edata, prof_info_t *prof_info,
+    bool reset_recent);
+void large_prof_tctx_reset(edata_t *edata);
+void large_prof_info_set(edata_t *edata, prof_tctx_t *tctx, size_t size);
+
+#endif /* JEMALLOC_INTERNAL_LARGE_EXTERNS_H */
diff --git a/deps/jemalloc/include/jemalloc/internal/lockedint.h b/deps/jemalloc/include/jemalloc/internal/lockedint.h
new file mode 100644
index 0000000..d020ebe
--- /dev/null
+++ b/deps/jemalloc/include/jemalloc/internal/lockedint.h
@@ -0,0 +1,204 @@
+#ifndef JEMALLOC_INTERNAL_LOCKEDINT_H
+#define JEMALLOC_INTERNAL_LOCKEDINT_H
+
+/*
+ * In those architectures that support 64-bit atomics, we use atomic updates for
+ * our 64-bit values.  Otherwise, we use a plain uint64_t and synchronize
+ * externally.
+ */
+
+typedef struct locked_u64_s locked_u64_t;
+#ifdef JEMALLOC_ATOMIC_U64
+struct locked_u64_s {
+	atomic_u64_t val;
+};
+#else
+/* Must hold the associated mutex. */
+struct locked_u64_s {
+	uint64_t val;
+};
+#endif
+
+typedef struct locked_zu_s locked_zu_t;
+struct locked_zu_s {
+	atomic_zu_t val;
+};
+
+#ifndef JEMALLOC_ATOMIC_U64
+#  define LOCKEDINT_MTX_DECLARE(name) malloc_mutex_t name;
+#  define LOCKEDINT_MTX_INIT(mu, name, rank, rank_mode)			\
+    malloc_mutex_init(&(mu), name, rank, rank_mode)
+#  define LOCKEDINT_MTX(mtx) (&(mtx))
+#  define LOCKEDINT_MTX_LOCK(tsdn, mu) malloc_mutex_lock(tsdn, &(mu))
+#  define LOCKEDINT_MTX_UNLOCK(tsdn, mu) malloc_mutex_unlock(tsdn, &(mu))
+#  define LOCKEDINT_MTX_PREFORK(tsdn, mu) malloc_mutex_prefork(tsdn, &(mu))
+#  define LOCKEDINT_MTX_POSTFORK_PARENT(tsdn, mu)			\
+    malloc_mutex_postfork_parent(tsdn, &(mu))
+#  define LOCKEDINT_MTX_POSTFORK_CHILD(tsdn, mu)			\
+    malloc_mutex_postfork_child(tsdn, &(mu))
+#else
+#  define LOCKEDINT_MTX_DECLARE(name)
+#  define LOCKEDINT_MTX(mtx) NULL
+#  define LOCKEDINT_MTX_INIT(mu, name, rank, rank_mode) false
+#  define LOCKEDINT_MTX_LOCK(tsdn, mu)
+#  define LOCKEDINT_MTX_UNLOCK(tsdn, mu)
+#  define LOCKEDINT_MTX_PREFORK(tsdn, mu)
+#  define LOCKEDINT_MTX_POSTFORK_PARENT(tsdn, mu)
+#  define LOCKEDINT_MTX_POSTFORK_CHILD(tsdn, mu)
+#endif
+
+#ifdef JEMALLOC_ATOMIC_U64
+#  define LOCKEDINT_MTX_ASSERT_INTERNAL(tsdn, mtx) assert((mtx) == NULL)
+#else
+#  define LOCKEDINT_MTX_ASSERT_INTERNAL(tsdn, mtx)			\
+    malloc_mutex_assert_owner(tsdn, (mtx))
+#endif
+
+static inline uint64_t
+locked_read_u64(tsdn_t *tsdn, malloc_mutex_t *mtx, locked_u64_t *p) {
+	LOCKEDINT_MTX_ASSERT_INTERNAL(tsdn, mtx);
+#ifdef JEMALLOC_ATOMIC_U64
+	return atomic_load_u64(&p->val, ATOMIC_RELAXED);
+#else
+	return p->val;
+#endif
+}
+
+static inline void
+locked_inc_u64(tsdn_t *tsdn, malloc_mutex_t *mtx, locked_u64_t *p,
+    uint64_t x) {
+	LOCKEDINT_MTX_ASSERT_INTERNAL(tsdn, mtx);
+#ifdef JEMALLOC_ATOMIC_U64
+	atomic_fetch_add_u64(&p->val, x, ATOMIC_RELAXED);
+#else
+	p->val += x;
+#endif
+}
+
+static inline void
+locked_dec_u64(tsdn_t *tsdn, malloc_mutex_t *mtx, locked_u64_t *p,
+    uint64_t x) {
+	LOCKEDINT_MTX_ASSERT_INTERNAL(tsdn, mtx);
+#ifdef JEMALLOC_ATOMIC_U64
+	uint64_t r = atomic_fetch_sub_u64(&p->val, x, ATOMIC_RELAXED);
+	assert(r - x <= r);
+#else
+	p->val -= x;
+	assert(p->val + x >= p->val);
+#endif
+}
+
+/* Increment and take modulus.  Returns whether the modulo made any change.  */
+static inline bool
+locked_inc_mod_u64(tsdn_t *tsdn, malloc_mutex_t *mtx, locked_u64_t *p,
+    const uint64_t x, const uint64_t modulus) {
+	LOCKEDINT_MTX_ASSERT_INTERNAL(tsdn, mtx);
+	uint64_t before, after;
+	bool overflow;
+#ifdef JEMALLOC_ATOMIC_U64
+	before = atomic_load_u64(&p->val, ATOMIC_RELAXED);
+	do {
+		after = before + x;
+		assert(after >= before);
+		overflow = (after >= modulus);
+		if (overflow) {
+			after %= modulus;
+		}
+	} while (!atomic_compare_exchange_weak_u64(&p->val, &before, after,
+	    ATOMIC_RELAXED, ATOMIC_RELAXED));
+#else
+	before = p->val;
+	after = before + x;
+	overflow = (after >= modulus);
+	if (overflow) {
+		after %= modulus;
+	}
+	p->val = after;
+#endif
+	return overflow;
+}
+
+/*
+ * Non-atomically sets *dst += src.  *dst needs external synchronization.
+ * This lets us avoid the cost of a fetch_add when its unnecessary (note that
+ * the types here are atomic).
+ */
+static inline void
+locked_inc_u64_unsynchronized(locked_u64_t *dst, uint64_t src) {
+#ifdef JEMALLOC_ATOMIC_U64
+	uint64_t cur_dst = atomic_load_u64(&dst->val, ATOMIC_RELAXED);
+	atomic_store_u64(&dst->val, src + cur_dst, ATOMIC_RELAXED);
+#else
+	dst->val += src;
+#endif
+}
+
+static inline uint64_t
+locked_read_u64_unsynchronized(locked_u64_t *p) {
+#ifdef JEMALLOC_ATOMIC_U64
+	return atomic_load_u64(&p->val, ATOMIC_RELAXED);
+#else
+	return p->val;
+#endif
+}
+
+static inline void
+locked_init_u64_unsynchronized(locked_u64_t *p, uint64_t x) {
+#ifdef JEMALLOC_ATOMIC_U64
+	atomic_store_u64(&p->val, x, ATOMIC_RELAXED);
+#else
+	p->val = x;
+#endif
+}
+
+static inline size_t
+locked_read_zu(tsdn_t *tsdn, malloc_mutex_t *mtx, locked_zu_t *p) {
+	LOCKEDINT_MTX_ASSERT_INTERNAL(tsdn, mtx);
+#ifdef JEMALLOC_ATOMIC_U64
+	return atomic_load_zu(&p->val, ATOMIC_RELAXED);
+#else
+	return atomic_load_zu(&p->val, ATOMIC_RELAXED);
+#endif
+}
+
+static inline void
+locked_inc_zu(tsdn_t *tsdn, malloc_mutex_t *mtx, locked_zu_t *p,
+    size_t x) {
+	LOCKEDINT_MTX_ASSERT_INTERNAL(tsdn, mtx);
+#ifdef JEMALLOC_ATOMIC_U64
+	atomic_fetch_add_zu(&p->val, x, ATOMIC_RELAXED);
+#else
+	size_t cur = atomic_load_zu(&p->val, ATOMIC_RELAXED);
+	atomic_store_zu(&p->val, cur + x, ATOMIC_RELAXED);
+#endif
+}
+
+static inline void
+locked_dec_zu(tsdn_t *tsdn, malloc_mutex_t *mtx, locked_zu_t *p,
+    size_t x) {
+	LOCKEDINT_MTX_ASSERT_INTERNAL(tsdn, mtx);
+#ifdef JEMALLOC_ATOMIC_U64
+	size_t r = atomic_fetch_sub_zu(&p->val, x, ATOMIC_RELAXED);
+	assert(r - x <= r);
+#else
+	size_t cur = atomic_load_zu(&p->val, ATOMIC_RELAXED);
+	atomic_store_zu(&p->val, cur - x, ATOMIC_RELAXED);
+#endif
+}
+
+/* Like the _u64 variant, needs an externally synchronized *dst. */
+static inline void
+locked_inc_zu_unsynchronized(locked_zu_t *dst, size_t src) {
+	size_t cur_dst = atomic_load_zu(&dst->val, ATOMIC_RELAXED);
+	atomic_store_zu(&dst->val, src + cur_dst, ATOMIC_RELAXED);
+}
+
+/*
+ * Unlike the _u64 variant, this is safe to call unconditionally.
+ */
+static inline size_t
+locked_read_atomic_zu(locked_zu_t *p) {
+	return atomic_load_zu(&p->val, ATOMIC_RELAXED);
+}
+
+#endif /* JEMALLOC_INTERNAL_LOCKEDINT_H */
diff --git a/deps/jemalloc/include/jemalloc/internal/log.h b/deps/jemalloc/include/jemalloc/internal/log.h
new file mode 100644
index 0000000..6420858
--- /dev/null
+++ b/deps/jemalloc/include/jemalloc/internal/log.h
@@ -0,0 +1,115 @@
+#ifndef JEMALLOC_INTERNAL_LOG_H
+#define JEMALLOC_INTERNAL_LOG_H
+
+#include "jemalloc/internal/atomic.h"
+#include "jemalloc/internal/malloc_io.h"
+#include "jemalloc/internal/mutex.h"
+
+#ifdef JEMALLOC_LOG
+#  define JEMALLOC_LOG_VAR_BUFSIZE 1000
+#else
+#  define JEMALLOC_LOG_VAR_BUFSIZE 1
+#endif
+
+#define JEMALLOC_LOG_BUFSIZE 4096
+
+/*
+ * The log malloc_conf option is a '|'-delimited list of log_var name segments
+ * which should be logged.  The names are themselves hierarchical, with '.' as
+ * the delimiter (a "segment" is just a prefix in the log namespace).  So, if
+ * you have:
+ *
+ * log("arena", "log msg for arena"); // 1
+ * log("arena.a", "log msg for arena.a"); // 2
+ * log("arena.b", "log msg for arena.b"); // 3
+ * log("arena.a.a", "log msg for arena.a.a"); // 4
+ * log("extent.a", "log msg for extent.a"); // 5
+ * log("extent.b", "log msg for extent.b"); // 6
+ *
+ * And your malloc_conf option is "log=arena.a|extent", then lines 2, 4, 5, and
+ * 6 will print at runtime.  You can enable logging from all log vars by
+ * writing "log=.".
+ *
+ * None of this should be regarded as a stable API for right now.  It's intended
+ * as a debugging interface, to let us keep around some of our printf-debugging
+ * statements.
+ */
+
+extern char log_var_names[JEMALLOC_LOG_VAR_BUFSIZE];
+extern atomic_b_t log_init_done;
+
+typedef struct log_var_s log_var_t;
+struct log_var_s {
+	/*
+	 * Lowest bit is "inited", second lowest is "enabled".  Putting them in
+	 * a single word lets us avoid any fences on weak architectures.
+	 */
+	atomic_u_t state;
+	const char *name;
+};
+
+#define LOG_NOT_INITIALIZED 0U
+#define LOG_INITIALIZED_NOT_ENABLED 1U
+#define LOG_ENABLED 2U
+
+#define LOG_VAR_INIT(name_str) {ATOMIC_INIT(LOG_NOT_INITIALIZED), name_str}
+
+/*
+ * Returns the value we should assume for state (which is not necessarily
+ * accurate; if logging is done before logging has finished initializing, then
+ * we default to doing the safe thing by logging everything).
+ */
+unsigned log_var_update_state(log_var_t *log_var);
+
+/* We factor out the metadata management to allow us to test more easily. */
+#define log_do_begin(log_var)						\
+if (config_log) {							\
+	unsigned log_state = atomic_load_u(&(log_var).state,		\
+	    ATOMIC_RELAXED);						\
+	if (unlikely(log_state == LOG_NOT_INITIALIZED)) {		\
+		log_state = log_var_update_state(&(log_var));		\
+		assert(log_state != LOG_NOT_INITIALIZED);		\
+	}								\
+	if (log_state == LOG_ENABLED) {					\
+		{
+			/* User code executes here. */
+#define log_do_end(log_var)						\
+		}							\
+	}								\
+}
+
+/*
+ * MSVC has some preprocessor bugs in its expansion of __VA_ARGS__ during
+ * preprocessing.  To work around this, we take all potential extra arguments in
+ * a var-args functions.  Since a varargs macro needs at least one argument in
+ * the "...", we accept the format string there, and require that the first
+ * argument in this "..." is a const char *.
+ */
+static inline void
+log_impl_varargs(const char *name, ...) {
+	char buf[JEMALLOC_LOG_BUFSIZE];
+	va_list ap;
+
+	va_start(ap, name);
+	const char *format = va_arg(ap, const char *);
+	size_t dst_offset = 0;
+	dst_offset += malloc_snprintf(buf, JEMALLOC_LOG_BUFSIZE, "%s: ", name);
+	dst_offset += malloc_vsnprintf(buf + dst_offset,
+	    JEMALLOC_LOG_BUFSIZE - dst_offset, format, ap);
+	dst_offset += malloc_snprintf(buf + dst_offset,
+	    JEMALLOC_LOG_BUFSIZE - dst_offset, "\n");
+	va_end(ap);
+
+	malloc_write(buf);
+}
+
+/* Call as log("log.var.str", "format_string %d", arg_for_format_string); */
+#define LOG(log_var_str, ...)						\
+do {									\
+	static log_var_t log_var = LOG_VAR_INIT(log_var_str);		\
+	log_do_begin(log_var)						\
+		log_impl_varargs((log_var).name, __VA_ARGS__);		\
+	log_do_end(log_var)						\
+} while (0)
+
+#endif /* JEMALLOC_INTERNAL_LOG_H */
diff --git a/deps/jemalloc/include/jemalloc/internal/malloc_io.h b/deps/jemalloc/include/jemalloc/internal/malloc_io.h
new file mode 100644
index 0000000..a375bda
--- /dev/null
+++ b/deps/jemalloc/include/jemalloc/internal/malloc_io.h
@@ -0,0 +1,105 @@
+#ifndef JEMALLOC_INTERNAL_MALLOC_IO_H
+#define JEMALLOC_INTERNAL_MALLOC_IO_H
+
+#include "jemalloc/internal/jemalloc_internal_types.h"
+
+#ifdef _WIN32
+#  ifdef _WIN64
+#    define FMT64_PREFIX "ll"
+#    define FMTPTR_PREFIX "ll"
+#  else
+#    define FMT64_PREFIX "ll"
+#    define FMTPTR_PREFIX ""
+#  endif
+#  define FMTd32 "d"
+#  define FMTu32 "u"
+#  define FMTx32 "x"
+#  define FMTd64 FMT64_PREFIX "d"
+#  define FMTu64 FMT64_PREFIX "u"
+#  define FMTx64 FMT64_PREFIX "x"
+#  define FMTdPTR FMTPTR_PREFIX "d"
+#  define FMTuPTR FMTPTR_PREFIX "u"
+#  define FMTxPTR FMTPTR_PREFIX "x"
+#else
+#  include <inttypes.h>
+#  define FMTd32 PRId32
+#  define FMTu32 PRIu32
+#  define FMTx32 PRIx32
+#  define FMTd64 PRId64
+#  define FMTu64 PRIu64
+#  define FMTx64 PRIx64
+#  define FMTdPTR PRIdPTR
+#  define FMTuPTR PRIuPTR
+#  define FMTxPTR PRIxPTR
+#endif
+
+/* Size of stack-allocated buffer passed to buferror(). */
+#define BUFERROR_BUF		64
+
+/*
+ * Size of stack-allocated buffer used by malloc_{,v,vc}printf().  This must be
+ * large enough for all possible uses within jemalloc.
+ */
+#define MALLOC_PRINTF_BUFSIZE	4096
+
+write_cb_t wrtmessage;
+int buferror(int err, char *buf, size_t buflen);
+uintmax_t malloc_strtoumax(const char *restrict nptr, char **restrict endptr,
+    int base);
+void malloc_write(const char *s);
+
+/*
+ * malloc_vsnprintf() supports a subset of snprintf(3) that avoids floating
+ * point math.
+ */
+size_t malloc_vsnprintf(char *str, size_t size, const char *format,
+    va_list ap);
+size_t malloc_snprintf(char *str, size_t size, const char *format, ...)
+    JEMALLOC_FORMAT_PRINTF(3, 4);
+/*
+ * The caller can set write_cb to null to choose to print with the
+ * je_malloc_message hook.
+ */
+void malloc_vcprintf(write_cb_t *write_cb, void *cbopaque, const char *format,
+    va_list ap);
+void malloc_cprintf(write_cb_t *write_cb, void *cbopaque, const char *format,
+    ...) JEMALLOC_FORMAT_PRINTF(3, 4);
+void malloc_printf(const char *format, ...) JEMALLOC_FORMAT_PRINTF(1, 2);
+
+static inline ssize_t
+malloc_write_fd(int fd, const void *buf, size_t count) {
+#if defined(JEMALLOC_USE_SYSCALL) && defined(SYS_write)
+	/*
+	 * Use syscall(2) rather than write(2) when possible in order to avoid
+	 * the possibility of memory allocation within libc.  This is necessary
+	 * on FreeBSD; most operating systems do not have this problem though.
+	 *
+	 * syscall() returns long or int, depending on platform, so capture the
+	 * result in the widest plausible type to avoid compiler warnings.
+	 */
+	long result = syscall(SYS_write, fd, buf, count);
+#else
+	ssize_t result = (ssize_t)write(fd, buf,
+#ifdef _WIN32
+	    (unsigned int)
+#endif
+	    count);
+#endif
+	return (ssize_t)result;
+}
+
+static inline ssize_t
+malloc_read_fd(int fd, void *buf, size_t count) {
+#if defined(JEMALLOC_USE_SYSCALL) && defined(SYS_read)
+	long result = syscall(SYS_read, fd, buf, count);
+#else
+	ssize_t result = read(fd, buf,
+#ifdef _WIN32
+	    (unsigned int)
+#endif
+	    count);
+#endif
+	return (ssize_t)result;
+}
+
+#endif /* JEMALLOC_INTERNAL_MALLOC_IO_H */
diff --git a/deps/jemalloc/include/jemalloc/internal/mpsc_queue.h b/deps/jemalloc/include/jemalloc/internal/mpsc_queue.h
new file mode 100644
index 0000000..316ea9b
--- /dev/null
+++ b/deps/jemalloc/include/jemalloc/internal/mpsc_queue.h
@@ -0,0 +1,134 @@
+#ifndef JEMALLOC_INTERNAL_MPSC_QUEUE_H
+#define JEMALLOC_INTERNAL_MPSC_QUEUE_H
+
+#include "jemalloc/internal/atomic.h"
+
+/*
+ * A concurrent implementation of a multi-producer, single-consumer queue.  It
+ * supports three concurrent operations:
+ * - Push
+ * - Push batch
+ * - Pop batch
+ *
+ * These operations are all lock-free.
+ *
+ * The implementation is the simple two-stack queue built on a Treiber stack.
+ * It's not terribly efficient, but this isn't expected to go into anywhere with
+ * hot code.  In fact, we don't really even need queue semantics in any
+ * anticipated use cases; we could get away with just the stack.  But this way
+ * lets us frame the API in terms of the existing list types, which is a nice
+ * convenience.  We can save on cache misses by introducing our own (parallel)
+ * single-linked list type here, and dropping FIFO semantics, if we need this to
+ * get faster.  Since we're currently providing queue semantics though, we use
+ * the prev field in the link rather than the next field for Treiber-stack
+ * linkage, so that we can preserve order for bash-pushed lists (recall that the
+ * two-stack tricks reverses orders in the lock-free first stack).
+ */
+
+#define mpsc_queue(a_type)						\
+struct {								\
+	atomic_p_t tail;						\
+}
+
+#define mpsc_queue_proto(a_attr, a_prefix, a_queue_type, a_type,	\
+    a_list_type)							\
+/* Initialize a queue. */						\
+a_attr void								\
+a_prefix##new(a_queue_type *queue);					\
+/* Insert all items in src into the queue, clearing src. */		\
+a_attr void								\
+a_prefix##push_batch(a_queue_type *queue, a_list_type *src);		\
+/* Insert node into the queue. */					\
+a_attr void								\
+a_prefix##push(a_queue_type *queue, a_type *node);			\
+/*									\
+ * Pop all items in the queue into the list at dst.  dst should already	\
+ * be initialized (and may contain existing items, which then remain	\
+ * in dst).								\
+ */									\
+a_attr void								\
+a_prefix##pop_batch(a_queue_type *queue, a_list_type *dst);
+
+#define mpsc_queue_gen(a_attr, a_prefix, a_queue_type, a_type,		\
+    a_list_type, a_link)						\
+a_attr void								\
+a_prefix##new(a_queue_type *queue) {					\
+	atomic_store_p(&queue->tail, NULL, ATOMIC_RELAXED);		\
+}									\
+a_attr void								\
+a_prefix##push_batch(a_queue_type *queue, a_list_type *src) {		\
+	/*								\
+	 * Reuse the ql list next field as the Treiber stack next	\
+	 * field.							\
+	 */								\
+	a_type *first = ql_first(src);					\
+	a_type *last = ql_last(src, a_link);				\
+	void* cur_tail = atomic_load_p(&queue->tail, ATOMIC_RELAXED);	\
+	do {								\
+		/*							\
+		 * Note that this breaks the queue ring structure;	\
+		 * it's not a ring any more!				\
+		 */							\
+		first->a_link.qre_prev = cur_tail;			\
+		/*							\
+		 * Note: the upcoming CAS doesn't need an atomic; every	\
+		 * push only needs to synchronize with the next pop,	\
+		 * which we get from the release sequence rules.	\
+		 */							\
+	} while (!atomic_compare_exchange_weak_p(&queue->tail,		\
+	    &cur_tail, last, ATOMIC_RELEASE, ATOMIC_RELAXED));		\
+	ql_new(src);							\
+}									\
+a_attr void								\
+a_prefix##push(a_queue_type *queue, a_type *node) {			\
+	ql_elm_new(node, a_link);					\
+	a_list_type list;						\
+	ql_new(&list);							\
+	ql_head_insert(&list, node, a_link);				\
+	a_prefix##push_batch(queue, &list);				\
+}									\
+a_attr void								\
+a_prefix##pop_batch(a_queue_type *queue, a_list_type *dst) {		\
+	a_type *tail = atomic_load_p(&queue->tail, ATOMIC_RELAXED);	\
+	if (tail == NULL) {						\
+		/*							\
+		 * In the common special case where there are no	\
+		 * pending elements, bail early without a costly RMW.	\
+		 */							\
+		return;							\
+	}								\
+	tail = atomic_exchange_p(&queue->tail, NULL, ATOMIC_ACQUIRE);	\
+	/*								\
+	 * It's a single-consumer queue, so if cur started non-NULL,	\
+	 * it'd better stay non-NULL.					\
+	 */								\
+	assert(tail != NULL);						\
+	/*								\
+	 * We iterate through the stack and both fix up the link	\
+	 * structure (stack insertion broke the list requirement that	\
+	 * the list be circularly linked).  It's just as efficient at	\
+	 * this point to make the queue a "real" queue, so do that as	\
+	 * well.							\
+	 * If this ever gets to be a hot spot, we can omit this fixup	\
+	 * and make the queue a bag (i.e. not necessarily ordered), but	\
+	 * that would mean jettisoning the existing list API as the 	\
+	 * batch pushing/popping interface.				\
+	 */								\
+	a_list_type reversed;						\
+	ql_new(&reversed);						\
+	while (tail != NULL) {						\
+		/*							\
+		 * Pop an item off the stack, prepend it onto the list	\
+		 * (reversing the order).  Recall that we use the	\
+		 * list prev field as the Treiber stack next field to	\
+		 * preserve order of batch-pushed items when reversed.	\
+		 */							\
+		a_type *next = tail->a_link.qre_prev;			\
+		ql_elm_new(tail, a_link);				\
+		ql_head_insert(&reversed, tail, a_link);		\
+		tail = next;						\
+	}								\
+	ql_concat(dst, &reversed, a_link);				\
+}
+
+#endif /* JEMALLOC_INTERNAL_MPSC_QUEUE_H */
diff --git a/deps/jemalloc/include/jemalloc/internal/mutex.h b/deps/jemalloc/include/jemalloc/internal/mutex.h
new file mode 100644
index 0000000..63a0b1b
--- /dev/null
+++ b/deps/jemalloc/include/jemalloc/internal/mutex.h
@@ -0,0 +1,319 @@
+#ifndef JEMALLOC_INTERNAL_MUTEX_H
+#define JEMALLOC_INTERNAL_MUTEX_H
+
+#include "jemalloc/internal/atomic.h"
+#include "jemalloc/internal/mutex_prof.h"
+#include "jemalloc/internal/tsd.h"
+#include "jemalloc/internal/witness.h"
+
+extern int64_t opt_mutex_max_spin;
+
+typedef enum {
+	/* Can only acquire one mutex of a given witness rank at a time. */
+	malloc_mutex_rank_exclusive,
+	/*
+	 * Can acquire multiple mutexes of the same witness rank, but in
+	 * address-ascending order only.
+	 */
+	malloc_mutex_address_ordered
+} malloc_mutex_lock_order_t;
+
+typedef struct malloc_mutex_s malloc_mutex_t;
+struct malloc_mutex_s {
+	union {
+		struct {
+			/*
+			 * prof_data is defined first to reduce cacheline
+			 * bouncing: the data is not touched by the mutex holder
+			 * during unlocking, while might be modified by
+			 * contenders.  Having it before the mutex itself could
+			 * avoid prefetching a modified cacheline (for the
+			 * unlocking thread).
+			 */
+			mutex_prof_data_t	prof_data;
+#ifdef _WIN32
+#  if _WIN32_WINNT >= 0x0600
+			SRWLOCK         	lock;
+#  else
+			CRITICAL_SECTION	lock;
+#  endif
+#elif (defined(JEMALLOC_OS_UNFAIR_LOCK))
+			os_unfair_lock		lock;
+#elif (defined(JEMALLOC_MUTEX_INIT_CB))
+			pthread_mutex_t		lock;
+			malloc_mutex_t		*postponed_next;
+#else
+			pthread_mutex_t		lock;
+#endif
+			/*
+			 * Hint flag to avoid exclusive cache line contention
+			 * during spin waiting
+			 */
+			atomic_b_t		locked;
+		};
+		/*
+		 * We only touch witness when configured w/ debug.  However we
+		 * keep the field in a union when !debug so that we don't have
+		 * to pollute the code base with #ifdefs, while avoid paying the
+		 * memory cost.
+		 */
+#if !defined(JEMALLOC_DEBUG)
+		witness_t			witness;
+		malloc_mutex_lock_order_t	lock_order;
+#endif
+	};
+
+#if defined(JEMALLOC_DEBUG)
+	witness_t			witness;
+	malloc_mutex_lock_order_t	lock_order;
+#endif
+};
+
+#ifdef _WIN32
+#  if _WIN32_WINNT >= 0x0600
+#    define MALLOC_MUTEX_LOCK(m)    AcquireSRWLockExclusive(&(m)->lock)
+#    define MALLOC_MUTEX_UNLOCK(m)  ReleaseSRWLockExclusive(&(m)->lock)
+#    define MALLOC_MUTEX_TRYLOCK(m) (!TryAcquireSRWLockExclusive(&(m)->lock))
+#  else
+#    define MALLOC_MUTEX_LOCK(m)    EnterCriticalSection(&(m)->lock)
+#    define MALLOC_MUTEX_UNLOCK(m)  LeaveCriticalSection(&(m)->lock)
+#    define MALLOC_MUTEX_TRYLOCK(m) (!TryEnterCriticalSection(&(m)->lock))
+#  endif
+#elif (defined(JEMALLOC_OS_UNFAIR_LOCK))
+#    define MALLOC_MUTEX_LOCK(m)    os_unfair_lock_lock(&(m)->lock)
+#    define MALLOC_MUTEX_UNLOCK(m)  os_unfair_lock_unlock(&(m)->lock)
+#    define MALLOC_MUTEX_TRYLOCK(m) (!os_unfair_lock_trylock(&(m)->lock))
+#else
+#    define MALLOC_MUTEX_LOCK(m)    pthread_mutex_lock(&(m)->lock)
+#    define MALLOC_MUTEX_UNLOCK(m)  pthread_mutex_unlock(&(m)->lock)
+#    define MALLOC_MUTEX_TRYLOCK(m) (pthread_mutex_trylock(&(m)->lock) != 0)
+#endif
+
+#define LOCK_PROF_DATA_INITIALIZER					\
+    {NSTIME_ZERO_INITIALIZER, NSTIME_ZERO_INITIALIZER, 0, 0, 0,		\
+	    ATOMIC_INIT(0), 0, NULL, 0}
+
+#ifdef _WIN32
+#  define MALLOC_MUTEX_INITIALIZER
+#elif (defined(JEMALLOC_OS_UNFAIR_LOCK))
+#  if defined(JEMALLOC_DEBUG)
+#    define MALLOC_MUTEX_INITIALIZER					\
+  {{{LOCK_PROF_DATA_INITIALIZER, OS_UNFAIR_LOCK_INIT, ATOMIC_INIT(false)}}, \
+         WITNESS_INITIALIZER("mutex", WITNESS_RANK_OMIT), 0}
+#  else
+#    define MALLOC_MUTEX_INITIALIZER                      \
+  {{{LOCK_PROF_DATA_INITIALIZER, OS_UNFAIR_LOCK_INIT, ATOMIC_INIT(false)}},  \
+      WITNESS_INITIALIZER("mutex", WITNESS_RANK_OMIT)}
+#  endif
+#elif (defined(JEMALLOC_MUTEX_INIT_CB))
+#  if (defined(JEMALLOC_DEBUG))
+#     define MALLOC_MUTEX_INITIALIZER					\
+      {{{LOCK_PROF_DATA_INITIALIZER, PTHREAD_MUTEX_INITIALIZER, NULL, ATOMIC_INIT(false)}},	\
+           WITNESS_INITIALIZER("mutex", WITNESS_RANK_OMIT), 0}
+#  else
+#     define MALLOC_MUTEX_INITIALIZER					\
+      {{{LOCK_PROF_DATA_INITIALIZER, PTHREAD_MUTEX_INITIALIZER, NULL, ATOMIC_INIT(false)}},	\
+           WITNESS_INITIALIZER("mutex", WITNESS_RANK_OMIT)}
+#  endif
+
+#else
+#    define MALLOC_MUTEX_TYPE PTHREAD_MUTEX_DEFAULT
+#  if defined(JEMALLOC_DEBUG)
+#    define MALLOC_MUTEX_INITIALIZER					\
+     {{{LOCK_PROF_DATA_INITIALIZER, PTHREAD_MUTEX_INITIALIZER, ATOMIC_INIT(false)}}, \
+           WITNESS_INITIALIZER("mutex", WITNESS_RANK_OMIT), 0}
+#  else
+#    define MALLOC_MUTEX_INITIALIZER                          \
+     {{{LOCK_PROF_DATA_INITIALIZER, PTHREAD_MUTEX_INITIALIZER, ATOMIC_INIT(false)}},	\
+      WITNESS_INITIALIZER("mutex", WITNESS_RANK_OMIT)}
+#  endif
+#endif
+
+#ifdef JEMALLOC_LAZY_LOCK
+extern bool isthreaded;
+#else
+#  undef isthreaded /* Undo private_namespace.h definition. */
+#  define isthreaded true
+#endif
+
+bool malloc_mutex_init(malloc_mutex_t *mutex, const char *name,
+    witness_rank_t rank, malloc_mutex_lock_order_t lock_order);
+void malloc_mutex_prefork(tsdn_t *tsdn, malloc_mutex_t *mutex);
+void malloc_mutex_postfork_parent(tsdn_t *tsdn, malloc_mutex_t *mutex);
+void malloc_mutex_postfork_child(tsdn_t *tsdn, malloc_mutex_t *mutex);
+bool malloc_mutex_boot(void);
+void malloc_mutex_prof_data_reset(tsdn_t *tsdn, malloc_mutex_t *mutex);
+
+void malloc_mutex_lock_slow(malloc_mutex_t *mutex);
+
+static inline void
+malloc_mutex_lock_final(malloc_mutex_t *mutex) {
+	MALLOC_MUTEX_LOCK(mutex);
+	atomic_store_b(&mutex->locked, true, ATOMIC_RELAXED);
+}
+
+static inline bool
+malloc_mutex_trylock_final(malloc_mutex_t *mutex) {
+	return MALLOC_MUTEX_TRYLOCK(mutex);
+}
+
+static inline void
+mutex_owner_stats_update(tsdn_t *tsdn, malloc_mutex_t *mutex) {
+	if (config_stats) {
+		mutex_prof_data_t *data = &mutex->prof_data;
+		data->n_lock_ops++;
+		if (data->prev_owner != tsdn) {
+			data->prev_owner = tsdn;
+			data->n_owner_switches++;
+		}
+	}
+}
+
+/* Trylock: return false if the lock is successfully acquired. */
+static inline bool
+malloc_mutex_trylock(tsdn_t *tsdn, malloc_mutex_t *mutex) {
+	witness_assert_not_owner(tsdn_witness_tsdp_get(tsdn), &mutex->witness);
+	if (isthreaded) {
+		if (malloc_mutex_trylock_final(mutex)) {
+			atomic_store_b(&mutex->locked, true, ATOMIC_RELAXED);
+			return true;
+		}
+		mutex_owner_stats_update(tsdn, mutex);
+	}
+	witness_lock(tsdn_witness_tsdp_get(tsdn), &mutex->witness);
+
+	return false;
+}
+
+/* Aggregate lock prof data. */
+static inline void
+malloc_mutex_prof_merge(mutex_prof_data_t *sum, mutex_prof_data_t *data) {
+	nstime_add(&sum->tot_wait_time, &data->tot_wait_time);
+	if (nstime_compare(&sum->max_wait_time, &data->max_wait_time) < 0) {
+		nstime_copy(&sum->max_wait_time, &data->max_wait_time);
+	}
+
+	sum->n_wait_times += data->n_wait_times;
+	sum->n_spin_acquired += data->n_spin_acquired;
+
+	if (sum->max_n_thds < data->max_n_thds) {
+		sum->max_n_thds = data->max_n_thds;
+	}
+	uint32_t cur_n_waiting_thds = atomic_load_u32(&sum->n_waiting_thds,
+	    ATOMIC_RELAXED);
+	uint32_t new_n_waiting_thds = cur_n_waiting_thds + atomic_load_u32(
+	    &data->n_waiting_thds, ATOMIC_RELAXED);
+	atomic_store_u32(&sum->n_waiting_thds, new_n_waiting_thds,
+	    ATOMIC_RELAXED);
+	sum->n_owner_switches += data->n_owner_switches;
+	sum->n_lock_ops += data->n_lock_ops;
+}
+
+static inline void
+malloc_mutex_lock(tsdn_t *tsdn, malloc_mutex_t *mutex) {
+	witness_assert_not_owner(tsdn_witness_tsdp_get(tsdn), &mutex->witness);
+	if (isthreaded) {
+		if (malloc_mutex_trylock_final(mutex)) {
+			malloc_mutex_lock_slow(mutex);
+			atomic_store_b(&mutex->locked, true, ATOMIC_RELAXED);
+		}
+		mutex_owner_stats_update(tsdn, mutex);
+	}
+	witness_lock(tsdn_witness_tsdp_get(tsdn), &mutex->witness);
+}
+
+static inline void
+malloc_mutex_unlock(tsdn_t *tsdn, malloc_mutex_t *mutex) {
+	atomic_store_b(&mutex->locked, false, ATOMIC_RELAXED);
+	witness_unlock(tsdn_witness_tsdp_get(tsdn), &mutex->witness);
+	if (isthreaded) {
+		MALLOC_MUTEX_UNLOCK(mutex);
+	}
+}
+
+static inline void
+malloc_mutex_assert_owner(tsdn_t *tsdn, malloc_mutex_t *mutex) {
+	witness_assert_owner(tsdn_witness_tsdp_get(tsdn), &mutex->witness);
+}
+
+static inline void
+malloc_mutex_assert_not_owner(tsdn_t *tsdn, malloc_mutex_t *mutex) {
+	witness_assert_not_owner(tsdn_witness_tsdp_get(tsdn), &mutex->witness);
+}
+
+static inline void
+malloc_mutex_prof_copy(mutex_prof_data_t *dst, mutex_prof_data_t *source) {
+	/*
+	 * Not *really* allowed (we shouldn't be doing non-atomic loads of
+	 * atomic data), but the mutex protection makes this safe, and writing
+	 * a member-for-member copy is tedious for this situation.
+	 */
+	*dst = *source;
+	/* n_wait_thds is not reported (modified w/o locking). */
+	atomic_store_u32(&dst->n_waiting_thds, 0, ATOMIC_RELAXED);
+}
+
+/* Copy the prof data from mutex for processing. */
+static inline void
+malloc_mutex_prof_read(tsdn_t *tsdn, mutex_prof_data_t *data,
+    malloc_mutex_t *mutex) {
+	/* Can only read holding the mutex. */
+	malloc_mutex_assert_owner(tsdn, mutex);
+	malloc_mutex_prof_copy(data, &mutex->prof_data);
+}
+
+static inline void
+malloc_mutex_prof_accum(tsdn_t *tsdn, mutex_prof_data_t *data,
+    malloc_mutex_t *mutex) {
+	mutex_prof_data_t *source = &mutex->prof_data;
+	/* Can only read holding the mutex. */
+	malloc_mutex_assert_owner(tsdn, mutex);
+
+	nstime_add(&data->tot_wait_time, &source->tot_wait_time);
+	if (nstime_compare(&source->max_wait_time, &data->max_wait_time) > 0) {
+		nstime_copy(&data->max_wait_time, &source->max_wait_time);
+	}
+	data->n_wait_times += source->n_wait_times;
+	data->n_spin_acquired += source->n_spin_acquired;
+	if (data->max_n_thds < source->max_n_thds) {
+		data->max_n_thds = source->max_n_thds;
+	}
+	/* n_wait_thds is not reported. */
+	atomic_store_u32(&data->n_waiting_thds, 0, ATOMIC_RELAXED);
+	data->n_owner_switches += source->n_owner_switches;
+	data->n_lock_ops += source->n_lock_ops;
+}
+
+/* Compare the prof data and update to the maximum. */
+static inline void
+malloc_mutex_prof_max_update(tsdn_t *tsdn, mutex_prof_data_t *data,
+    malloc_mutex_t *mutex) {
+	mutex_prof_data_t *source = &mutex->prof_data;
+	/* Can only read holding the mutex. */
+	malloc_mutex_assert_owner(tsdn, mutex);
+
+	if (nstime_compare(&source->tot_wait_time, &data->tot_wait_time) > 0) {
+		nstime_copy(&data->tot_wait_time, &source->tot_wait_time);
+	}
+	if (nstime_compare(&source->max_wait_time, &data->max_wait_time) > 0) {
+		nstime_copy(&data->max_wait_time, &source->max_wait_time);
+	}
+	if (source->n_wait_times > data->n_wait_times) {
+		data->n_wait_times = source->n_wait_times;
+	}
+	if (source->n_spin_acquired > data->n_spin_acquired) {
+		data->n_spin_acquired = source->n_spin_acquired;
+	}
+	if (source->max_n_thds > data->max_n_thds) {
+		data->max_n_thds = source->max_n_thds;
+	}
+	if (source->n_owner_switches > data->n_owner_switches) {
+		data->n_owner_switches = source->n_owner_switches;
+	}
+	if (source->n_lock_ops > data->n_lock_ops) {
+		data->n_lock_ops = source->n_lock_ops;
+	}
+	/* n_wait_thds is not reported. */
+}
+
+#endif /* JEMALLOC_INTERNAL_MUTEX_H */
diff --git a/deps/jemalloc/include/jemalloc/internal/mutex_prof.h b/deps/jemalloc/include/jemalloc/internal/mutex_prof.h
new file mode 100644
index 0000000..4a526a5
--- /dev/null
+++ b/deps/jemalloc/include/jemalloc/internal/mutex_prof.h
@@ -0,0 +1,117 @@
+#ifndef JEMALLOC_INTERNAL_MUTEX_PROF_H
+#define JEMALLOC_INTERNAL_MUTEX_PROF_H
+
+#include "jemalloc/internal/atomic.h"
+#include "jemalloc/internal/nstime.h"
+#include "jemalloc/internal/tsd_types.h"
+
+#define MUTEX_PROF_GLOBAL_MUTEXES					\
+    OP(background_thread)						\
+    OP(max_per_bg_thd)							\
+    OP(ctl)								\
+    OP(prof)								\
+    OP(prof_thds_data)							\
+    OP(prof_dump)							\
+    OP(prof_recent_alloc)						\
+    OP(prof_recent_dump)						\
+    OP(prof_stats)
+
+typedef enum {
+#define OP(mtx) global_prof_mutex_##mtx,
+	MUTEX_PROF_GLOBAL_MUTEXES
+#undef OP
+	mutex_prof_num_global_mutexes
+} mutex_prof_global_ind_t;
+
+#define MUTEX_PROF_ARENA_MUTEXES					\
+    OP(large)								\
+    OP(extent_avail)							\
+    OP(extents_dirty)							\
+    OP(extents_muzzy)							\
+    OP(extents_retained)						\
+    OP(decay_dirty)							\
+    OP(decay_muzzy)							\
+    OP(base)								\
+    OP(tcache_list)							\
+    OP(hpa_shard)							\
+    OP(hpa_shard_grow)							\
+    OP(hpa_sec)
+
+typedef enum {
+#define OP(mtx) arena_prof_mutex_##mtx,
+	MUTEX_PROF_ARENA_MUTEXES
+#undef OP
+	mutex_prof_num_arena_mutexes
+} mutex_prof_arena_ind_t;
+
+/*
+ * The forth parameter is a boolean value that is true for derived rate counters
+ * and false for real ones.
+ */
+#define MUTEX_PROF_UINT64_COUNTERS					\
+    OP(num_ops, uint64_t, "n_lock_ops", false, num_ops)					\
+    OP(num_ops_ps, uint64_t, "(#/sec)", true, num_ops)				\
+    OP(num_wait, uint64_t, "n_waiting", false, num_wait)				\
+    OP(num_wait_ps, uint64_t, "(#/sec)", true, num_wait)				\
+    OP(num_spin_acq, uint64_t, "n_spin_acq", false, num_spin_acq)			\
+    OP(num_spin_acq_ps, uint64_t, "(#/sec)", true, num_spin_acq)			\
+    OP(num_owner_switch, uint64_t, "n_owner_switch", false, num_owner_switch)		\
+    OP(num_owner_switch_ps, uint64_t, "(#/sec)", true, num_owner_switch)	\
+    OP(total_wait_time, uint64_t, "total_wait_ns", false, total_wait_time)		\
+    OP(total_wait_time_ps, uint64_t, "(#/sec)", true, total_wait_time)		\
+    OP(max_wait_time, uint64_t, "max_wait_ns", false, max_wait_time)
+
+#define MUTEX_PROF_UINT32_COUNTERS					\
+    OP(max_num_thds, uint32_t, "max_n_thds", false, max_num_thds)
+
+#define MUTEX_PROF_COUNTERS						\
+		MUTEX_PROF_UINT64_COUNTERS				\
+		MUTEX_PROF_UINT32_COUNTERS
+
+#define OP(counter, type, human, derived, base_counter) mutex_counter_##counter,
+
+#define COUNTER_ENUM(counter_list, t)					\
+		typedef enum {						\
+			counter_list					\
+			mutex_prof_num_##t##_counters			\
+		} mutex_prof_##t##_counter_ind_t;
+
+COUNTER_ENUM(MUTEX_PROF_UINT64_COUNTERS, uint64_t)
+COUNTER_ENUM(MUTEX_PROF_UINT32_COUNTERS, uint32_t)
+
+#undef COUNTER_ENUM
+#undef OP
+
+typedef struct {
+	/*
+	 * Counters touched on the slow path, i.e. when there is lock
+	 * contention.  We update them once we have the lock.
+	 */
+	/* Total time (in nano seconds) spent waiting on this mutex. */
+	nstime_t		tot_wait_time;
+	/* Max time (in nano seconds) spent on a single lock operation. */
+	nstime_t		max_wait_time;
+	/* # of times have to wait for this mutex (after spinning). */
+	uint64_t		n_wait_times;
+	/* # of times acquired the mutex through local spinning. */
+	uint64_t		n_spin_acquired;
+	/* Max # of threads waiting for the mutex at the same time. */
+	uint32_t		max_n_thds;
+	/* Current # of threads waiting on the lock.  Atomic synced. */
+	atomic_u32_t		n_waiting_thds;
+
+	/*
+	 * Data touched on the fast path.  These are modified right after we
+	 * grab the lock, so it's placed closest to the end (i.e. right before
+	 * the lock) so that we have a higher chance of them being on the same
+	 * cacheline.
+	 */
+	/* # of times the mutex holder is different than the previous one. */
+	uint64_t		n_owner_switches;
+	/* Previous mutex holder, to facilitate n_owner_switches. */
+	tsdn_t			*prev_owner;
+	/* # of lock() operations in total. */
+	uint64_t		n_lock_ops;
+} mutex_prof_data_t;
+
+#endif /* JEMALLOC_INTERNAL_MUTEX_PROF_H */
diff --git a/deps/jemalloc/include/jemalloc/internal/nstime.h b/deps/jemalloc/include/jemalloc/internal/nstime.h
new file mode 100644
index 0000000..486e5cc
--- /dev/null
+++ b/deps/jemalloc/include/jemalloc/internal/nstime.h
@@ -0,0 +1,73 @@
+#ifndef JEMALLOC_INTERNAL_NSTIME_H
+#define JEMALLOC_INTERNAL_NSTIME_H
+
+/* Maximum supported number of seconds (~584 years). */
+#define NSTIME_SEC_MAX KQU(18446744072)
+
+#define NSTIME_MAGIC ((uint32_t)0xb8a9ce37)
+#ifdef JEMALLOC_DEBUG
+#  define NSTIME_ZERO_INITIALIZER {0, NSTIME_MAGIC}
+#else
+#  define NSTIME_ZERO_INITIALIZER {0}
+#endif
+
+typedef struct {
+	uint64_t ns;
+#ifdef JEMALLOC_DEBUG
+	uint32_t magic; /* Tracks if initialized. */
+#endif
+} nstime_t;
+
+static const nstime_t nstime_zero = NSTIME_ZERO_INITIALIZER;
+
+void nstime_init(nstime_t *time, uint64_t ns);
+void nstime_init2(nstime_t *time, uint64_t sec, uint64_t nsec);
+uint64_t nstime_ns(const nstime_t *time);
+uint64_t nstime_sec(const nstime_t *time);
+uint64_t nstime_msec(const nstime_t *time);
+uint64_t nstime_nsec(const nstime_t *time);
+void nstime_copy(nstime_t *time, const nstime_t *source);
+int nstime_compare(const nstime_t *a, const nstime_t *b);
+void nstime_add(nstime_t *time, const nstime_t *addend);
+void nstime_iadd(nstime_t *time, uint64_t addend);
+void nstime_subtract(nstime_t *time, const nstime_t *subtrahend);
+void nstime_isubtract(nstime_t *time, uint64_t subtrahend);
+void nstime_imultiply(nstime_t *time, uint64_t multiplier);
+void nstime_idivide(nstime_t *time, uint64_t divisor);
+uint64_t nstime_divide(const nstime_t *time, const nstime_t *divisor);
+uint64_t nstime_ns_since(const nstime_t *past);
+
+typedef bool (nstime_monotonic_t)(void);
+extern nstime_monotonic_t *JET_MUTABLE nstime_monotonic;
+
+typedef void (nstime_update_t)(nstime_t *);
+extern nstime_update_t *JET_MUTABLE nstime_update;
+
+typedef void (nstime_prof_update_t)(nstime_t *);
+extern nstime_prof_update_t *JET_MUTABLE nstime_prof_update;
+
+void nstime_init_update(nstime_t *time);
+void nstime_prof_init_update(nstime_t *time);
+
+enum prof_time_res_e {
+	prof_time_res_default = 0,
+	prof_time_res_high = 1
+};
+typedef enum prof_time_res_e prof_time_res_t;
+
+extern prof_time_res_t opt_prof_time_res;
+extern const char *prof_time_res_mode_names[];
+
+JEMALLOC_ALWAYS_INLINE void
+nstime_init_zero(nstime_t *time) {
+	nstime_copy(time, &nstime_zero);
+}
+
+JEMALLOC_ALWAYS_INLINE bool
+nstime_equals_zero(nstime_t *time) {
+	int diff = nstime_compare(time, &nstime_zero);
+	assert(diff >= 0);
+	return diff == 0;
+}
+
+#endif /* JEMALLOC_INTERNAL_NSTIME_H */
diff --git a/deps/jemalloc/include/jemalloc/internal/pa.h b/deps/jemalloc/include/jemalloc/internal/pa.h
new file mode 100644
index 0000000..4748a05
--- /dev/null
+++ b/deps/jemalloc/include/jemalloc/internal/pa.h
@@ -0,0 +1,243 @@
+#ifndef JEMALLOC_INTERNAL_PA_H
+#define JEMALLOC_INTERNAL_PA_H
+
+#include "jemalloc/internal/base.h"
+#include "jemalloc/internal/decay.h"
+#include "jemalloc/internal/ecache.h"
+#include "jemalloc/internal/edata_cache.h"
+#include "jemalloc/internal/emap.h"
+#include "jemalloc/internal/hpa.h"
+#include "jemalloc/internal/lockedint.h"
+#include "jemalloc/internal/pac.h"
+#include "jemalloc/internal/pai.h"
+#include "jemalloc/internal/sec.h"
+
+/*
+ * The page allocator; responsible for acquiring pages of memory for
+ * allocations.  It picks the implementation of the page allocator interface
+ * (i.e. a pai_t) to handle a given page-level allocation request.  For now, the
+ * only such implementation is the PAC code ("page allocator classic"), but
+ * others will be coming soon.
+ */
+
+typedef struct pa_central_s pa_central_t;
+struct pa_central_s {
+	hpa_central_t hpa;
+};
+
+/*
+ * The stats for a particular pa_shard.  Because of the way the ctl module
+ * handles stats epoch data collection (it has its own arena_stats, and merges
+ * the stats from each arena into it), this needs to live in the arena_stats_t;
+ * hence we define it here and let the pa_shard have a pointer (rather than the
+ * more natural approach of just embedding it in the pa_shard itself).
+ *
+ * We follow the arena_stats_t approach of marking the derived fields.  These
+ * are the ones that are not maintained on their own; instead, their values are
+ * derived during those stats merges.
+ */
+typedef struct pa_shard_stats_s pa_shard_stats_t;
+struct pa_shard_stats_s {
+	/* Number of edata_t structs allocated by base, but not being used. */
+	size_t edata_avail; /* Derived. */
+	/*
+	 * Stats specific to the PAC.  For now, these are the only stats that
+	 * exist, but there will eventually be other page allocators.  Things
+	 * like edata_avail make sense in a cross-PA sense, but things like
+	 * npurges don't.
+	 */
+	pac_stats_t pac_stats;
+};
+
+/*
+ * The local allocator handle.  Keeps the state necessary to satisfy page-sized
+ * allocations.
+ *
+ * The contents are mostly internal to the PA module.  The key exception is that
+ * arena decay code is allowed to grab pointers to the dirty and muzzy ecaches
+ * decay_ts, for a couple of queries, passing them back to a PA function, or
+ * acquiring decay.mtx and looking at decay.purging.  The reasoning is that,
+ * while PA decides what and how to purge, the arena code decides when and where
+ * (e.g. on what thread).  It's allowed to use the presence of another purger to
+ * decide.
+ * (The background thread code also touches some other decay internals, but
+ * that's not fundamental; its' just an artifact of a partial refactoring, and
+ * its accesses could be straightforwardly moved inside the decay module).
+ */
+typedef struct pa_shard_s pa_shard_t;
+struct pa_shard_s {
+	/* The central PA this shard is associated with. */
+	pa_central_t *central;
+
+	/*
+	 * Number of pages in active extents.
+	 *
+	 * Synchronization: atomic.
+	 */
+	atomic_zu_t nactive;
+
+	/*
+	 * Whether or not we should prefer the hugepage allocator.  Atomic since
+	 * it may be concurrently modified by a thread setting extent hooks.
+	 * Note that we still may do HPA operations in this arena; if use_hpa is
+	 * changed from true to false, we'll free back to the hugepage allocator
+	 * for those allocations.
+	 */
+	atomic_b_t use_hpa;
+
+	/*
+	 * If we never used the HPA to begin with, it wasn't initialized, and so
+	 * we shouldn't try to e.g. acquire its mutexes during fork.  This
+	 * tracks that knowledge.
+	 */
+	bool ever_used_hpa;
+
+	/* Allocates from a PAC. */
+	pac_t pac;
+
+	/*
+	 * We place a small extent cache in front of the HPA, since we intend
+	 * these configurations to use many fewer arenas, and therefore have a
+	 * higher risk of hot locks.
+	 */
+	sec_t hpa_sec;
+	hpa_shard_t hpa_shard;
+
+	/* The source of edata_t objects. */
+	edata_cache_t edata_cache;
+
+	unsigned ind;
+
+	malloc_mutex_t *stats_mtx;
+	pa_shard_stats_t *stats;
+
+	/* The emap this shard is tied to. */
+	emap_t *emap;
+
+	/* The base from which we get the ehooks and allocate metadat. */
+	base_t *base;
+};
+
+static inline bool
+pa_shard_dont_decay_muzzy(pa_shard_t *shard) {
+	return ecache_npages_get(&shard->pac.ecache_muzzy) == 0 &&
+	    pac_decay_ms_get(&shard->pac, extent_state_muzzy) <= 0;
+}
+
+static inline ehooks_t *
+pa_shard_ehooks_get(pa_shard_t *shard) {
+	return base_ehooks_get(shard->base);
+}
+
+/* Returns true on error. */
+bool pa_central_init(pa_central_t *central, base_t *base, bool hpa,
+    hpa_hooks_t *hpa_hooks);
+
+/* Returns true on error. */
+bool pa_shard_init(tsdn_t *tsdn, pa_shard_t *shard, pa_central_t *central,
+    emap_t *emap, base_t *base, unsigned ind, pa_shard_stats_t *stats,
+    malloc_mutex_t *stats_mtx, nstime_t *cur_time, size_t oversize_threshold,
+    ssize_t dirty_decay_ms, ssize_t muzzy_decay_ms);
+
+/*
+ * This isn't exposed to users; we allow late enablement of the HPA shard so
+ * that we can boot without worrying about the HPA, then turn it on in a0.
+ */
+bool pa_shard_enable_hpa(tsdn_t *tsdn, pa_shard_t *shard,
+    const hpa_shard_opts_t *hpa_opts, const sec_opts_t *hpa_sec_opts);
+
+/*
+ * We stop using the HPA when custom extent hooks are installed, but still
+ * redirect deallocations to it.
+ */
+void pa_shard_disable_hpa(tsdn_t *tsdn, pa_shard_t *shard);
+
+/*
+ * This does the PA-specific parts of arena reset (i.e. freeing all active
+ * allocations).
+ */
+void pa_shard_reset(tsdn_t *tsdn, pa_shard_t *shard);
+
+/*
+ * Destroy all the remaining retained extents.  Should only be called after
+ * decaying all active, dirty, and muzzy extents to the retained state, as the
+ * last step in destroying the shard.
+ */
+void pa_shard_destroy(tsdn_t *tsdn, pa_shard_t *shard);
+
+/* Gets an edata for the given allocation. */
+edata_t *pa_alloc(tsdn_t *tsdn, pa_shard_t *shard, size_t size,
+    size_t alignment, bool slab, szind_t szind, bool zero, bool guarded,
+    bool *deferred_work_generated);
+/* Returns true on error, in which case nothing changed. */
+bool pa_expand(tsdn_t *tsdn, pa_shard_t *shard, edata_t *edata, size_t old_size,
+    size_t new_size, szind_t szind, bool zero, bool *deferred_work_generated);
+/*
+ * The same.  Sets *generated_dirty to true if we produced new dirty pages, and
+ * false otherwise.
+ */
+bool pa_shrink(tsdn_t *tsdn, pa_shard_t *shard, edata_t *edata, size_t old_size,
+    size_t new_size, szind_t szind, bool *deferred_work_generated);
+/*
+ * Frees the given edata back to the pa.  Sets *generated_dirty if we produced
+ * new dirty pages (well, we always set it for now; but this need not be the
+ * case).
+ * (We could make generated_dirty the return value of course, but this is more
+ * consistent with the shrink pathway and our error codes here).
+ */
+void pa_dalloc(tsdn_t *tsdn, pa_shard_t *shard, edata_t *edata,
+    bool *deferred_work_generated);
+bool pa_decay_ms_set(tsdn_t *tsdn, pa_shard_t *shard, extent_state_t state,
+    ssize_t decay_ms, pac_purge_eagerness_t eagerness);
+ssize_t pa_decay_ms_get(pa_shard_t *shard, extent_state_t state);
+
+/*
+ * Do deferred work on this PA shard.
+ *
+ * Morally, this should do both PAC decay and the HPA deferred work.  For now,
+ * though, the arena, background thread, and PAC modules are tightly interwoven
+ * in a way that's tricky to extricate, so we only do the HPA-specific parts.
+ */
+void pa_shard_set_deferral_allowed(tsdn_t *tsdn, pa_shard_t *shard,
+    bool deferral_allowed);
+void pa_shard_do_deferred_work(tsdn_t *tsdn, pa_shard_t *shard);
+void pa_shard_try_deferred_work(tsdn_t *tsdn, pa_shard_t *shard);
+uint64_t pa_shard_time_until_deferred_work(tsdn_t *tsdn, pa_shard_t *shard);
+
+/******************************************************************************/
+/*
+ * Various bits of "boring" functionality that are still part of this module,
+ * but that we relegate to pa_extra.c, to keep the core logic in pa.c as
+ * readable as possible.
+ */
+
+/*
+ * These fork phases are synchronized with the arena fork phase numbering to
+ * make it easy to keep straight. That's why there's no prefork1.
+ */
+void pa_shard_prefork0(tsdn_t *tsdn, pa_shard_t *shard);
+void pa_shard_prefork2(tsdn_t *tsdn, pa_shard_t *shard);
+void pa_shard_prefork3(tsdn_t *tsdn, pa_shard_t *shard);
+void pa_shard_prefork4(tsdn_t *tsdn, pa_shard_t *shard);
+void pa_shard_prefork5(tsdn_t *tsdn, pa_shard_t *shard);
+void pa_shard_postfork_parent(tsdn_t *tsdn, pa_shard_t *shard);
+void pa_shard_postfork_child(tsdn_t *tsdn, pa_shard_t *shard);
+
+void pa_shard_basic_stats_merge(pa_shard_t *shard, size_t *nactive,
+    size_t *ndirty, size_t *nmuzzy);
+
+void pa_shard_stats_merge(tsdn_t *tsdn, pa_shard_t *shard,
+    pa_shard_stats_t *pa_shard_stats_out, pac_estats_t *estats_out,
+    hpa_shard_stats_t *hpa_stats_out, sec_stats_t *sec_stats_out,
+    size_t *resident);
+
+/*
+ * Reads the PA-owned mutex stats into the output stats array, at the
+ * appropriate positions.  Morally, these stats should really live in
+ * pa_shard_stats_t, but the indices are sort of baked into the various mutex
+ * prof macros.  This would be a good thing to do at some point.
+ */
+void pa_shard_mtx_stats_read(tsdn_t *tsdn, pa_shard_t *shard,
+    mutex_prof_data_t mutex_prof_data[mutex_prof_num_arena_mutexes]);
+
+#endif /* JEMALLOC_INTERNAL_PA_H */
diff --git a/deps/jemalloc/include/jemalloc/internal/pac.h b/deps/jemalloc/include/jemalloc/internal/pac.h
new file mode 100644
index 0000000..01c4e6a
--- /dev/null
+++ b/deps/jemalloc/include/jemalloc/internal/pac.h
@@ -0,0 +1,179 @@
+#ifndef JEMALLOC_INTERNAL_PAC_H
+#define JEMALLOC_INTERNAL_PAC_H
+
+#include "jemalloc/internal/exp_grow.h"
+#include "jemalloc/internal/pai.h"
+#include "san_bump.h"
+
+
+/*
+ * Page allocator classic; an implementation of the PAI interface that:
+ * - Can be used for arenas with custom extent hooks.
+ * - Can always satisfy any allocation request (including highly-fragmentary
+ *   ones).
+ * - Can use efficient OS-level zeroing primitives for demand-filled pages.
+ */
+
+/* How "eager" decay/purging should be. */
+enum pac_purge_eagerness_e {
+	PAC_PURGE_ALWAYS,
+	PAC_PURGE_NEVER,
+	PAC_PURGE_ON_EPOCH_ADVANCE
+};
+typedef enum pac_purge_eagerness_e pac_purge_eagerness_t;
+
+typedef struct pac_decay_stats_s pac_decay_stats_t;
+struct pac_decay_stats_s {
+	/* Total number of purge sweeps. */
+	locked_u64_t npurge;
+	/* Total number of madvise calls made. */
+	locked_u64_t nmadvise;
+	/* Total number of pages purged. */
+	locked_u64_t purged;
+};
+
+typedef struct pac_estats_s pac_estats_t;
+struct pac_estats_s {
+	/*
+	 * Stats for a given index in the range [0, SC_NPSIZES] in the various
+	 * ecache_ts.
+	 * We track both bytes and # of extents: two extents in the same bucket
+	 * may have different sizes if adjacent size classes differ by more than
+	 * a page, so bytes cannot always be derived from # of extents.
+	 */
+	size_t ndirty;
+	size_t dirty_bytes;
+	size_t nmuzzy;
+	size_t muzzy_bytes;
+	size_t nretained;
+	size_t retained_bytes;
+};
+
+typedef struct pac_stats_s pac_stats_t;
+struct pac_stats_s {
+	pac_decay_stats_t decay_dirty;
+	pac_decay_stats_t decay_muzzy;
+
+	/*
+	 * Number of unused virtual memory bytes currently retained.  Retained
+	 * bytes are technically mapped (though always decommitted or purged),
+	 * but they are excluded from the mapped statistic (above).
+	 */
+	size_t retained; /* Derived. */
+
+	/*
+	 * Number of bytes currently mapped, excluding retained memory (and any
+	 * base-allocated memory, which is tracked by the arena stats).
+	 *
+	 * We name this "pac_mapped" to avoid confusion with the arena_stats
+	 * "mapped".
+	 */
+	atomic_zu_t pac_mapped;
+
+	/* VM space had to be leaked (undocumented).  Normally 0. */
+	atomic_zu_t abandoned_vm;
+};
+
+typedef struct pac_s pac_t;
+struct pac_s {
+	/*
+	 * Must be the first member (we convert it to a PAC given only a
+	 * pointer).  The handle to the allocation interface.
+	 */
+	pai_t pai;
+	/*
+	 * Collections of extents that were previously allocated.  These are
+	 * used when allocating extents, in an attempt to re-use address space.
+	 *
+	 * Synchronization: internal.
+	 */
+	ecache_t ecache_dirty;
+	ecache_t ecache_muzzy;
+	ecache_t ecache_retained;
+
+	base_t *base;
+	emap_t *emap;
+	edata_cache_t *edata_cache;
+
+	/* The grow info for the retained ecache. */
+	exp_grow_t exp_grow;
+	malloc_mutex_t grow_mtx;
+
+	/* Special allocator for guarded frequently reused extents. */
+	san_bump_alloc_t sba;
+
+	/* How large extents should be before getting auto-purged. */
+	atomic_zu_t oversize_threshold;
+
+	/*
+	 * Decay-based purging state, responsible for scheduling extent state
+	 * transitions.
+	 *
+	 * Synchronization: via the internal mutex.
+	 */
+	decay_t decay_dirty; /* dirty --> muzzy */
+	decay_t decay_muzzy; /* muzzy --> retained */
+
+	malloc_mutex_t *stats_mtx;
+	pac_stats_t *stats;
+
+	/* Extent serial number generator state. */
+	atomic_zu_t extent_sn_next;
+};
+
+bool pac_init(tsdn_t *tsdn, pac_t *pac, base_t *base, emap_t *emap,
+    edata_cache_t *edata_cache, nstime_t *cur_time, size_t oversize_threshold,
+    ssize_t dirty_decay_ms, ssize_t muzzy_decay_ms, pac_stats_t *pac_stats,
+    malloc_mutex_t *stats_mtx);
+
+static inline size_t
+pac_mapped(pac_t *pac) {
+	return atomic_load_zu(&pac->stats->pac_mapped, ATOMIC_RELAXED);
+}
+
+static inline ehooks_t *
+pac_ehooks_get(pac_t *pac) {
+	return base_ehooks_get(pac->base);
+}
+
+/*
+ * All purging functions require holding decay->mtx.  This is one of the few
+ * places external modules are allowed to peek inside pa_shard_t internals.
+ */
+
+/*
+ * Decays the number of pages currently in the ecache.  This might not leave the
+ * ecache empty if other threads are inserting dirty objects into it
+ * concurrently with the call.
+ */
+void pac_decay_all(tsdn_t *tsdn, pac_t *pac, decay_t *decay,
+    pac_decay_stats_t *decay_stats, ecache_t *ecache, bool fully_decay);
+/*
+ * Updates decay settings for the current time, and conditionally purges in
+ * response (depending on decay_purge_setting).  Returns whether or not the
+ * epoch advanced.
+ */
+bool pac_maybe_decay_purge(tsdn_t *tsdn, pac_t *pac, decay_t *decay,
+    pac_decay_stats_t *decay_stats, ecache_t *ecache,
+    pac_purge_eagerness_t eagerness);
+
+/*
+ * Gets / sets the maximum amount that we'll grow an arena down the
+ * grow-retained pathways (unless forced to by an allocaction request).
+ *
+ * Set new_limit to NULL if it's just a query, or old_limit to NULL if you don't
+ * care about the previous value.
+ *
+ * Returns true on error (if the new limit is not valid).
+ */
+bool pac_retain_grow_limit_get_set(tsdn_t *tsdn, pac_t *pac, size_t *old_limit,
+    size_t *new_limit);
+
+bool pac_decay_ms_set(tsdn_t *tsdn, pac_t *pac, extent_state_t state,
+    ssize_t decay_ms, pac_purge_eagerness_t eagerness);
+ssize_t pac_decay_ms_get(pac_t *pac, extent_state_t state);
+
+void pac_reset(tsdn_t *tsdn, pac_t *pac);
+void pac_destroy(tsdn_t *tsdn, pac_t *pac);
+
+#endif /* JEMALLOC_INTERNAL_PAC_H */
diff --git a/deps/jemalloc/include/jemalloc/internal/pages.h b/deps/jemalloc/include/jemalloc/internal/pages.h
new file mode 100644
index 0000000..ad1f606
--- /dev/null
+++ b/deps/jemalloc/include/jemalloc/internal/pages.h
@@ -0,0 +1,119 @@
+#ifndef JEMALLOC_INTERNAL_PAGES_EXTERNS_H
+#define JEMALLOC_INTERNAL_PAGES_EXTERNS_H
+
+/* Page size.  LG_PAGE is determined by the configure script. */
+#ifdef PAGE_MASK
+#  undef PAGE_MASK
+#endif
+#define PAGE		((size_t)(1U << LG_PAGE))
+#define PAGE_MASK	((size_t)(PAGE - 1))
+/* Return the page base address for the page containing address a. */
+#define PAGE_ADDR2BASE(a)						\
+	((void *)((uintptr_t)(a) & ~PAGE_MASK))
+/* Return the smallest pagesize multiple that is >= s. */
+#define PAGE_CEILING(s)							\
+	(((s) + PAGE_MASK) & ~PAGE_MASK)
+/* Return the largest pagesize multiple that is <=s. */
+#define PAGE_FLOOR(s) 							\
+	((s) & ~PAGE_MASK)
+
+/* Huge page size.  LG_HUGEPAGE is determined by the configure script. */
+#define HUGEPAGE	((size_t)(1U << LG_HUGEPAGE))
+#define HUGEPAGE_MASK	((size_t)(HUGEPAGE - 1))
+
+#if LG_HUGEPAGE != 0
+#  define HUGEPAGE_PAGES (HUGEPAGE / PAGE)
+#else
+/*
+ * It's convenient to define arrays (or bitmaps) of HUGEPAGE_PAGES lengths.  If
+ * we can't autodetect the hugepage size, it gets treated as 0, in which case
+ * we'll trigger a compiler error in those arrays.  Avoid this case by ensuring
+ * that this value is at least 1.  (We won't ever run in this degraded state;
+ * hpa_supported() returns false in this case.
+ */
+#  define HUGEPAGE_PAGES 1
+#endif
+
+/* Return the huge page base address for the huge page containing address a. */
+#define HUGEPAGE_ADDR2BASE(a)						\
+	((void *)((uintptr_t)(a) & ~HUGEPAGE_MASK))
+/* Return the smallest pagesize multiple that is >= s. */
+#define HUGEPAGE_CEILING(s)						\
+	(((s) + HUGEPAGE_MASK) & ~HUGEPAGE_MASK)
+
+/* PAGES_CAN_PURGE_LAZY is defined if lazy purging is supported. */
+#if defined(_WIN32) || defined(JEMALLOC_PURGE_MADVISE_FREE)
+#  define PAGES_CAN_PURGE_LAZY
+#endif
+/*
+ * PAGES_CAN_PURGE_FORCED is defined if forced purging is supported.
+ *
+ * The only supported way to hard-purge on Windows is to decommit and then
+ * re-commit, but doing so is racy, and if re-commit fails it's a pain to
+ * propagate the "poisoned" memory state.  Since we typically decommit as the
+ * next step after purging on Windows anyway, there's no point in adding such
+ * complexity.
+ */
+#if !defined(_WIN32) && ((defined(JEMALLOC_PURGE_MADVISE_DONTNEED) && \
+    defined(JEMALLOC_PURGE_MADVISE_DONTNEED_ZEROS)) || \
+    defined(JEMALLOC_MAPS_COALESCE))
+#  define PAGES_CAN_PURGE_FORCED
+#endif
+
+static const bool pages_can_purge_lazy =
+#ifdef PAGES_CAN_PURGE_LAZY
+    true
+#else
+    false
+#endif
+    ;
+static const bool pages_can_purge_forced =
+#ifdef PAGES_CAN_PURGE_FORCED
+    true
+#else
+    false
+#endif
+    ;
+
+#if defined(JEMALLOC_HAVE_MADVISE_HUGE) || defined(JEMALLOC_HAVE_MEMCNTL)
+#  define PAGES_CAN_HUGIFY
+#endif
+
+static const bool pages_can_hugify =
+#ifdef PAGES_CAN_HUGIFY
+    true
+#else
+    false
+#endif
+    ;
+
+typedef enum {
+	thp_mode_default       = 0, /* Do not change hugepage settings. */
+	thp_mode_always        = 1, /* Always set MADV_HUGEPAGE. */
+	thp_mode_never         = 2, /* Always set MADV_NOHUGEPAGE. */
+
+	thp_mode_names_limit   = 3, /* Used for option processing. */
+	thp_mode_not_supported = 3  /* No THP support detected. */
+} thp_mode_t;
+
+#define THP_MODE_DEFAULT thp_mode_default
+extern thp_mode_t opt_thp;
+extern thp_mode_t init_system_thp_mode; /* Initial system wide state. */
+extern const char *thp_mode_names[];
+
+void *pages_map(void *addr, size_t size, size_t alignment, bool *commit);
+void pages_unmap(void *addr, size_t size);
+bool pages_commit(void *addr, size_t size);
+bool pages_decommit(void *addr, size_t size);
+bool pages_purge_lazy(void *addr, size_t size);
+bool pages_purge_forced(void *addr, size_t size);
+bool pages_huge(void *addr, size_t size);
+bool pages_nohuge(void *addr, size_t size);
+bool pages_dontdump(void *addr, size_t size);
+bool pages_dodump(void *addr, size_t size);
+bool pages_boot(void);
+void pages_set_thp_state (void *ptr, size_t size);
+void pages_mark_guards(void *head, void *tail);
+void pages_unmark_guards(void *head, void *tail);
+
+#endif /* JEMALLOC_INTERNAL_PAGES_EXTERNS_H */
diff --git a/deps/jemalloc/include/jemalloc/internal/pai.h b/deps/jemalloc/include/jemalloc/internal/pai.h
new file mode 100644
index 0000000..d978cd7
--- /dev/null
+++ b/deps/jemalloc/include/jemalloc/internal/pai.h
@@ -0,0 +1,95 @@
+#ifndef JEMALLOC_INTERNAL_PAI_H
+#define JEMALLOC_INTERNAL_PAI_H
+
+/* An interface for page allocation. */
+
+typedef struct pai_s pai_t;
+struct pai_s {
+	/* Returns NULL on failure. */
+	edata_t *(*alloc)(tsdn_t *tsdn, pai_t *self, size_t size,
+	    size_t alignment, bool zero, bool guarded, bool frequent_reuse,
+	    bool *deferred_work_generated);
+	/*
+	 * Returns the number of extents added to the list (which may be fewer
+	 * than requested, in case of OOM).  The list should already be
+	 * initialized.  The only alignment guarantee is page-alignment, and
+	 * the results are not necessarily zeroed.
+	 */
+	size_t (*alloc_batch)(tsdn_t *tsdn, pai_t *self, size_t size,
+	    size_t nallocs, edata_list_active_t *results,
+	    bool *deferred_work_generated);
+	bool (*expand)(tsdn_t *tsdn, pai_t *self, edata_t *edata,
+	    size_t old_size, size_t new_size, bool zero,
+	    bool *deferred_work_generated);
+	bool (*shrink)(tsdn_t *tsdn, pai_t *self, edata_t *edata,
+	    size_t old_size, size_t new_size, bool *deferred_work_generated);
+	void (*dalloc)(tsdn_t *tsdn, pai_t *self, edata_t *edata,
+	    bool *deferred_work_generated);
+	/* This function empties out list as a side-effect of being called. */
+	void (*dalloc_batch)(tsdn_t *tsdn, pai_t *self,
+	    edata_list_active_t *list, bool *deferred_work_generated);
+	uint64_t (*time_until_deferred_work)(tsdn_t *tsdn, pai_t *self);
+};
+
+/*
+ * These are just simple convenience functions to avoid having to reference the
+ * same pai_t twice on every invocation.
+ */
+
+static inline edata_t *
+pai_alloc(tsdn_t *tsdn, pai_t *self, size_t size, size_t alignment,
+    bool zero, bool guarded, bool frequent_reuse,
+    bool *deferred_work_generated) {
+	return self->alloc(tsdn, self, size, alignment, zero, guarded,
+	    frequent_reuse, deferred_work_generated);
+}
+
+static inline size_t
+pai_alloc_batch(tsdn_t *tsdn, pai_t *self, size_t size, size_t nallocs,
+    edata_list_active_t *results, bool *deferred_work_generated) {
+	return self->alloc_batch(tsdn, self, size, nallocs, results,
+	    deferred_work_generated);
+}
+
+static inline bool
+pai_expand(tsdn_t *tsdn, pai_t *self, edata_t *edata, size_t old_size,
+    size_t new_size, bool zero, bool *deferred_work_generated) {
+	return self->expand(tsdn, self, edata, old_size, new_size, zero,
+	    deferred_work_generated);
+}
+
+static inline bool
+pai_shrink(tsdn_t *tsdn, pai_t *self, edata_t *edata, size_t old_size,
+    size_t new_size, bool *deferred_work_generated) {
+	return self->shrink(tsdn, self, edata, old_size, new_size,
+	    deferred_work_generated);
+}
+
+static inline void
+pai_dalloc(tsdn_t *tsdn, pai_t *self, edata_t *edata,
+    bool *deferred_work_generated) {
+	self->dalloc(tsdn, self, edata, deferred_work_generated);
+}
+
+static inline void
+pai_dalloc_batch(tsdn_t *tsdn, pai_t *self, edata_list_active_t *list,
+    bool *deferred_work_generated) {
+	self->dalloc_batch(tsdn, self, list, deferred_work_generated);
+}
+
+static inline uint64_t
+pai_time_until_deferred_work(tsdn_t *tsdn, pai_t *self) {
+	return self->time_until_deferred_work(tsdn, self);
+}
+
+/*
+ * An implementation of batch allocation that simply calls alloc once for
+ * each item in the list.
+ */
+size_t pai_alloc_batch_default(tsdn_t *tsdn, pai_t *self, size_t size,
+    size_t nallocs, edata_list_active_t *results, bool *deferred_work_generated);
+/* Ditto, for dalloc. */
+void pai_dalloc_batch_default(tsdn_t *tsdn, pai_t *self,
+    edata_list_active_t *list, bool *deferred_work_generated);
+
+#endif /* JEMALLOC_INTERNAL_PAI_H */
diff --git a/deps/jemalloc/include/jemalloc/internal/peak.h b/deps/jemalloc/include/jemalloc/internal/peak.h
new file mode 100644
index 0000000..59da3e4
--- /dev/null
+++ b/deps/jemalloc/include/jemalloc/internal/peak.h
@@ -0,0 +1,37 @@
+#ifndef JEMALLOC_INTERNAL_PEAK_H
+#define JEMALLOC_INTERNAL_PEAK_H
+
+typedef struct peak_s peak_t;
+struct peak_s {
+	/* The highest recorded peak value, after adjustment (see below). */
+	uint64_t cur_max;
+	/*
+	 * The difference between alloc and dalloc at the last set_zero call;
+	 * this lets us cancel out the appropriate amount of excess.
+	 */
+	uint64_t adjustment;
+};
+
+#define PEAK_INITIALIZER {0, 0}
+
+static inline uint64_t
+peak_max(peak_t *peak) {
+	return peak->cur_max;
+}
+
+static inline void
+peak_update(peak_t *peak, uint64_t alloc, uint64_t dalloc) {
+	int64_t candidate_max = (int64_t)(alloc - dalloc - peak->adjustment);
+	if (candidate_max > (int64_t)peak->cur_max) {
+		peak->cur_max = candidate_max;
+	}
+}
+
+/* Resets the counter to zero; all peaks are now relative to this point. */
+static inline void
+peak_set_zero(peak_t *peak, uint64_t alloc, uint64_t dalloc) {
+	peak->cur_max = 0;
+	peak->adjustment = alloc - dalloc;
+}
+
+#endif /* JEMALLOC_INTERNAL_PEAK_H */
diff --git a/deps/jemalloc/include/jemalloc/internal/peak_event.h b/deps/jemalloc/include/jemalloc/internal/peak_event.h
new file mode 100644
index 0000000..b808ce0
--- /dev/null
+++ b/deps/jemalloc/include/jemalloc/internal/peak_event.h
@@ -0,0 +1,24 @@
+#ifndef JEMALLOC_INTERNAL_PEAK_EVENT_H
+#define JEMALLOC_INTERNAL_PEAK_EVENT_H
+
+/*
+ * While peak.h contains the simple helper struct that tracks state, this
+ * contains the allocator tie-ins (and knows about tsd, the event module, etc.).
+ */
+
+/* Update the peak with current tsd state. */
+void peak_event_update(tsd_t *tsd);
+/* Set current state to zero. */
+void peak_event_zero(tsd_t *tsd);
+uint64_t peak_event_max(tsd_t *tsd);
+
+/* Manual hooks. */
+/* The activity-triggered hooks. */
+uint64_t peak_alloc_new_event_wait(tsd_t *tsd);
+uint64_t peak_alloc_postponed_event_wait(tsd_t *tsd);
+void peak_alloc_event_handler(tsd_t *tsd, uint64_t elapsed);
+uint64_t peak_dalloc_new_event_wait(tsd_t *tsd);
+uint64_t peak_dalloc_postponed_event_wait(tsd_t *tsd);
+void peak_dalloc_event_handler(tsd_t *tsd, uint64_t elapsed);
+
+#endif /* JEMALLOC_INTERNAL_PEAK_EVENT_H */
diff --git a/deps/jemalloc/include/jemalloc/internal/ph.h b/deps/jemalloc/include/jemalloc/internal/ph.h
new file mode 100644
index 0000000..5f091c5
--- /dev/null
+++ b/deps/jemalloc/include/jemalloc/internal/ph.h
@@ -0,0 +1,520 @@
+#ifndef JEMALLOC_INTERNAL_PH_H
+#define JEMALLOC_INTERNAL_PH_H
+
+/*
+ * A Pairing Heap implementation.
+ *
+ * "The Pairing Heap: A New Form of Self-Adjusting Heap"
+ * https://www.cs.cmu.edu/~sleator/papers/pairing-heaps.pdf
+ *
+ * With auxiliary twopass list, described in a follow on paper.
+ *
+ * "Pairing Heaps: Experiments and Analysis"
+ * http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.106.2988&rep=rep1&type=pdf
+ *
+ *******************************************************************************
+ *
+ * We include a non-obvious optimization:
+ * - First, we introduce a new pop-and-link operation; pop the two most
+ *   recently-inserted items off the aux-list, link them, and push the resulting
+ *   heap.
+ * - We maintain a count of the number of insertions since the last time we
+ *   merged the aux-list (i.e. via first() or remove_first()).  After N inserts,
+ *   we do ffs(N) pop-and-link operations.
+ *
+ * One way to think of this is that we're progressively building up a tree in
+ * the aux-list, rather than a linked-list (think of the series of merges that
+ * will be performed as the aux-count grows).
+ *
+ * There's a couple reasons we benefit from this:
+ * - Ordinarily, after N insertions, the aux-list is of size N.  With our
+ *   strategy, it's of size O(log(N)).  So we decrease the worst-case time of
+ *   first() calls, and reduce the average cost of remove_min calls.  Since
+ *   these almost always occur while holding a lock, we practically reduce the
+ *   frequency of unusually long hold times.
+ * - This moves the bulk of the work of merging the aux-list onto the threads
+ *   that are inserting into the heap.  In some common scenarios, insertions
+ *   happen in bulk, from a single thread (think tcache flushing; we potentially
+ *   move many slabs from slabs_full to slabs_nonfull).  All the nodes in this
+ *   case are in the inserting threads cache, and linking them is very cheap
+ *   (cache misses dominate linking cost).  Without this optimization, linking
+ *   happens on the next call to remove_first.  Since that remove_first call
+ *   likely happens on a different thread (or at least, after the cache has
+ *   gotten cold if done on the same thread), deferring linking trades cheap
+ *   link operations now for expensive ones later.
+ *
+ * The ffs trick keeps amortized insert cost at constant time.  Similar
+ * strategies based on periodically sorting the list after a batch of operations
+ * perform worse than this in practice, even with various fancy tricks; they
+ * all took amortized complexity of an insert from O(1) to O(log(n)).
+ */
+
+typedef int (*ph_cmp_t)(void *, void *);
+
+/* Node structure. */
+typedef struct phn_link_s phn_link_t;
+struct phn_link_s {
+	void *prev;
+	void *next;
+	void *lchild;
+};
+
+typedef struct ph_s ph_t;
+struct ph_s {
+	void *root;
+	/*
+	 * Inserts done since the last aux-list merge.  This is not necessarily
+	 * the size of the aux-list, since it's possible that removals have
+	 * happened since, and we don't track whether or not those removals are
+	 * from the aux list.
+	 */
+	size_t auxcount;
+};
+
+JEMALLOC_ALWAYS_INLINE phn_link_t *
+phn_link_get(void *phn, size_t offset) {
+	return (phn_link_t *)(((uintptr_t)phn) + offset);
+}
+
+JEMALLOC_ALWAYS_INLINE void
+phn_link_init(void *phn, size_t offset) {
+	phn_link_get(phn, offset)->prev = NULL;
+	phn_link_get(phn, offset)->next = NULL;
+	phn_link_get(phn, offset)->lchild = NULL;
+}
+
+/* Internal utility helpers. */
+JEMALLOC_ALWAYS_INLINE void *
+phn_lchild_get(void *phn, size_t offset) {
+	return phn_link_get(phn, offset)->lchild;
+}
+
+JEMALLOC_ALWAYS_INLINE void
+phn_lchild_set(void *phn, void *lchild, size_t offset) {
+	phn_link_get(phn, offset)->lchild = lchild;
+}
+
+JEMALLOC_ALWAYS_INLINE void *
+phn_next_get(void *phn, size_t offset) {
+	return phn_link_get(phn, offset)->next;
+}
+
+JEMALLOC_ALWAYS_INLINE void
+phn_next_set(void *phn, void *next, size_t offset) {
+	phn_link_get(phn, offset)->next = next;
+}
+
+JEMALLOC_ALWAYS_INLINE void *
+phn_prev_get(void *phn, size_t offset) {
+	return phn_link_get(phn, offset)->prev;
+}
+
+JEMALLOC_ALWAYS_INLINE void
+phn_prev_set(void *phn, void *prev, size_t offset) {
+	phn_link_get(phn, offset)->prev = prev;
+}
+
+JEMALLOC_ALWAYS_INLINE void
+phn_merge_ordered(void *phn0, void *phn1, size_t offset,
+    ph_cmp_t cmp) {
+	void *phn0child;
+
+	assert(phn0 != NULL);
+	assert(phn1 != NULL);
+	assert(cmp(phn0, phn1) <= 0);
+
+	phn_prev_set(phn1, phn0, offset);
+	phn0child = phn_lchild_get(phn0, offset);
+	phn_next_set(phn1, phn0child, offset);
+	if (phn0child != NULL) {
+		phn_prev_set(phn0child, phn1, offset);
+	}
+	phn_lchild_set(phn0, phn1, offset);
+}
+
+JEMALLOC_ALWAYS_INLINE void *
+phn_merge(void *phn0, void *phn1, size_t offset, ph_cmp_t cmp) {
+	void *result;
+	if (phn0 == NULL) {
+		result = phn1;
+	} else if (phn1 == NULL) {
+		result = phn0;
+	} else if (cmp(phn0, phn1) < 0) {
+		phn_merge_ordered(phn0, phn1, offset, cmp);
+		result = phn0;
+	} else {
+		phn_merge_ordered(phn1, phn0, offset, cmp);
+		result = phn1;
+	}
+	return result;
+}
+
+JEMALLOC_ALWAYS_INLINE void *
+phn_merge_siblings(void *phn, size_t offset, ph_cmp_t cmp) {
+	void *head = NULL;
+	void *tail = NULL;
+	void *phn0 = phn;
+	void *phn1 = phn_next_get(phn0, offset);
+
+	/*
+	 * Multipass merge, wherein the first two elements of a FIFO
+	 * are repeatedly merged, and each result is appended to the
+	 * singly linked FIFO, until the FIFO contains only a single
+	 * element.  We start with a sibling list but no reference to
+	 * its tail, so we do a single pass over the sibling list to
+	 * populate the FIFO.
+	 */
+	if (phn1 != NULL) {
+		void *phnrest = phn_next_get(phn1, offset);
+		if (phnrest != NULL) {
+			phn_prev_set(phnrest, NULL, offset);
+		}
+		phn_prev_set(phn0, NULL, offset);
+		phn_next_set(phn0, NULL, offset);
+		phn_prev_set(phn1, NULL, offset);
+		phn_next_set(phn1, NULL, offset);
+		phn0 = phn_merge(phn0, phn1, offset, cmp);
+		head = tail = phn0;
+		phn0 = phnrest;
+		while (phn0 != NULL) {
+			phn1 = phn_next_get(phn0, offset);
+			if (phn1 != NULL) {
+				phnrest = phn_next_get(phn1, offset);
+				if (phnrest != NULL) {
+					phn_prev_set(phnrest, NULL, offset);
+				}
+				phn_prev_set(phn0, NULL, offset);
+				phn_next_set(phn0, NULL, offset);
+				phn_prev_set(phn1, NULL, offset);
+				phn_next_set(phn1, NULL, offset);
+				phn0 = phn_merge(phn0, phn1, offset, cmp);
+				phn_next_set(tail, phn0, offset);
+				tail = phn0;
+				phn0 = phnrest;
+			} else {
+				phn_next_set(tail, phn0, offset);
+				tail = phn0;
+				phn0 = NULL;
+			}
+		}
+		phn0 = head;
+		phn1 = phn_next_get(phn0, offset);
+		if (phn1 != NULL) {
+			while (true) {
+				head = phn_next_get(phn1, offset);
+				assert(phn_prev_get(phn0, offset) == NULL);
+				phn_next_set(phn0, NULL, offset);
+				assert(phn_prev_get(phn1, offset) == NULL);
+				phn_next_set(phn1, NULL, offset);
+				phn0 = phn_merge(phn0, phn1, offset, cmp);
+				if (head == NULL) {
+					break;
+				}
+				phn_next_set(tail, phn0, offset);
+				tail = phn0;
+				phn0 = head;
+				phn1 = phn_next_get(phn0, offset);
+			}
+		}
+	}
+	return phn0;
+}
+
+JEMALLOC_ALWAYS_INLINE void
+ph_merge_aux(ph_t *ph, size_t offset, ph_cmp_t cmp) {
+	ph->auxcount = 0;
+	void *phn = phn_next_get(ph->root, offset);
+	if (phn != NULL) {
+		phn_prev_set(ph->root, NULL, offset);
+		phn_next_set(ph->root, NULL, offset);
+		phn_prev_set(phn, NULL, offset);
+		phn = phn_merge_siblings(phn, offset, cmp);
+		assert(phn_next_get(phn, offset) == NULL);
+		ph->root = phn_merge(ph->root, phn, offset, cmp);
+	}
+}
+
+JEMALLOC_ALWAYS_INLINE void *
+ph_merge_children(void *phn, size_t offset, ph_cmp_t cmp) {
+	void *result;
+	void *lchild = phn_lchild_get(phn, offset);
+	if (lchild == NULL) {
+		result = NULL;
+	} else {
+		result = phn_merge_siblings(lchild, offset, cmp);
+	}
+	return result;
+}
+
+JEMALLOC_ALWAYS_INLINE void
+ph_new(ph_t *ph) {
+	ph->root = NULL;
+	ph->auxcount = 0;
+}
+
+JEMALLOC_ALWAYS_INLINE bool
+ph_empty(ph_t *ph) {
+	return ph->root == NULL;
+}
+
+JEMALLOC_ALWAYS_INLINE void *
+ph_first(ph_t *ph, size_t offset, ph_cmp_t cmp) {
+	if (ph->root == NULL) {
+		return NULL;
+	}
+	ph_merge_aux(ph, offset, cmp);
+	return ph->root;
+}
+
+JEMALLOC_ALWAYS_INLINE void *
+ph_any(ph_t *ph, size_t offset) {
+	if (ph->root == NULL) {
+		return NULL;
+	}
+	void *aux = phn_next_get(ph->root, offset);
+	if (aux != NULL) {
+		return aux;
+	}
+	return ph->root;
+}
+
+/* Returns true if we should stop trying to merge. */
+JEMALLOC_ALWAYS_INLINE bool
+ph_try_aux_merge_pair(ph_t *ph, size_t offset, ph_cmp_t cmp) {
+	assert(ph->root != NULL);
+	void *phn0 = phn_next_get(ph->root, offset);
+	if (phn0 == NULL) {
+		return true;
+	}
+	void *phn1 = phn_next_get(phn0, offset);
+	if (phn1 == NULL) {
+		return true;
+	}
+	void *next_phn1 = phn_next_get(phn1, offset);
+	phn_next_set(phn0, NULL, offset);
+	phn_prev_set(phn0, NULL, offset);
+	phn_next_set(phn1, NULL, offset);
+	phn_prev_set(phn1, NULL, offset);
+	phn0 = phn_merge(phn0, phn1, offset, cmp);
+	phn_next_set(phn0, next_phn1, offset);
+	if (next_phn1 != NULL) {
+		phn_prev_set(next_phn1, phn0, offset);
+	}
+	phn_next_set(ph->root, phn0, offset);
+	phn_prev_set(phn0, ph->root, offset);
+	return next_phn1 == NULL;
+}
+
+JEMALLOC_ALWAYS_INLINE void
+ph_insert(ph_t *ph, void *phn, size_t offset, ph_cmp_t cmp) {
+	phn_link_init(phn, offset);
+
+	/*
+	 * Treat the root as an aux list during insertion, and lazily merge
+	 * during a_prefix##remove_first().  For elements that are inserted,
+	 * then removed via a_prefix##remove() before the aux list is ever
+	 * processed, this makes insert/remove constant-time, whereas eager
+	 * merging would make insert O(log n).
+	 */
+	if (ph->root == NULL) {
+		ph->root = phn;
+	} else {
+		/*
+		 * As a special case, check to see if we can replace the root.
+		 * This is practically common in some important cases, and lets
+		 * us defer some insertions (hopefully, until the point where
+		 * some of the items in the aux list have been removed, savings
+		 * us from linking them at all).
+		 */
+		if (cmp(phn, ph->root) < 0) {
+			phn_lchild_set(phn, ph->root, offset);
+			phn_prev_set(ph->root, phn, offset);
+			ph->root = phn;
+			ph->auxcount = 0;
+			return;
+		}
+		ph->auxcount++;
+		phn_next_set(phn, phn_next_get(ph->root, offset), offset);
+		if (phn_next_get(ph->root, offset) != NULL) {
+			phn_prev_set(phn_next_get(ph->root, offset), phn,
+			    offset);
+		}
+		phn_prev_set(phn, ph->root, offset);
+		phn_next_set(ph->root, phn, offset);
+	}
+	if (ph->auxcount > 1) {
+		unsigned nmerges = ffs_zu(ph->auxcount - 1);
+		bool done = false;
+		for (unsigned i = 0; i < nmerges && !done; i++) {
+			done = ph_try_aux_merge_pair(ph, offset, cmp);
+		}
+	}
+}
+
+JEMALLOC_ALWAYS_INLINE void *
+ph_remove_first(ph_t *ph, size_t offset, ph_cmp_t cmp) {
+	void *ret;
+
+	if (ph->root == NULL) {
+		return NULL;
+	}
+	ph_merge_aux(ph, offset, cmp);
+	ret = ph->root;
+	ph->root = ph_merge_children(ph->root, offset, cmp);
+
+	return ret;
+
+}
+
+JEMALLOC_ALWAYS_INLINE void
+ph_remove(ph_t *ph, void *phn, size_t offset, ph_cmp_t cmp) {
+	void *replace;
+	void *parent;
+
+	if (ph->root == phn) {
+		/*
+		 * We can delete from aux list without merging it, but we need
+		 * to merge if we are dealing with the root node and it has
+		 * children.
+		 */
+		if (phn_lchild_get(phn, offset) == NULL) {
+			ph->root = phn_next_get(phn, offset);
+			if (ph->root != NULL) {
+				phn_prev_set(ph->root, NULL, offset);
+			}
+			return;
+		}
+		ph_merge_aux(ph, offset, cmp);
+		if (ph->root == phn) {
+			ph->root = ph_merge_children(ph->root, offset, cmp);
+			return;
+		}
+	}
+
+	/* Get parent (if phn is leftmost child) before mutating. */
+	if ((parent = phn_prev_get(phn, offset)) != NULL) {
+		if (phn_lchild_get(parent, offset) != phn) {
+			parent = NULL;
+		}
+	}
+	/* Find a possible replacement node, and link to parent. */
+	replace = ph_merge_children(phn, offset, cmp);
+	/* Set next/prev for sibling linked list. */
+	if (replace != NULL) {
+		if (parent != NULL) {
+			phn_prev_set(replace, parent, offset);
+			phn_lchild_set(parent, replace, offset);
+		} else {
+			phn_prev_set(replace, phn_prev_get(phn, offset),
+			    offset);
+			if (phn_prev_get(phn, offset) != NULL) {
+				phn_next_set(phn_prev_get(phn, offset), replace,
+				    offset);
+			}
+		}
+		phn_next_set(replace, phn_next_get(phn, offset), offset);
+		if (phn_next_get(phn, offset) != NULL) {
+			phn_prev_set(phn_next_get(phn, offset), replace,
+			    offset);
+		}
+	} else {
+		if (parent != NULL) {
+			void *next = phn_next_get(phn, offset);
+			phn_lchild_set(parent, next, offset);
+			if (next != NULL) {
+				phn_prev_set(next, parent, offset);
+			}
+		} else {
+			assert(phn_prev_get(phn, offset) != NULL);
+			phn_next_set(
+			    phn_prev_get(phn, offset),
+			    phn_next_get(phn, offset), offset);
+		}
+		if (phn_next_get(phn, offset) != NULL) {
+			phn_prev_set(
+			    phn_next_get(phn, offset),
+			    phn_prev_get(phn, offset), offset);
+		}
+	}
+}
+
+#define ph_structs(a_prefix, a_type)					\
+typedef struct {							\
+	phn_link_t link;						\
+} a_prefix##_link_t;							\
+									\
+typedef struct {							\
+	ph_t ph;							\
+} a_prefix##_t;
+
+/*
+ * The ph_proto() macro generates function prototypes that correspond to the
+ * functions generated by an equivalently parameterized call to ph_gen().
+ */
+#define ph_proto(a_attr, a_prefix, a_type)				\
+									\
+a_attr void a_prefix##_new(a_prefix##_t *ph);				\
+a_attr bool a_prefix##_empty(a_prefix##_t *ph);				\
+a_attr a_type *a_prefix##_first(a_prefix##_t *ph);			\
+a_attr a_type *a_prefix##_any(a_prefix##_t *ph);			\
+a_attr void a_prefix##_insert(a_prefix##_t *ph, a_type *phn);		\
+a_attr a_type *a_prefix##_remove_first(a_prefix##_t *ph);		\
+a_attr void a_prefix##_remove(a_prefix##_t *ph, a_type *phn);		\
+a_attr a_type *a_prefix##_remove_any(a_prefix##_t *ph);
+
+/* The ph_gen() macro generates a type-specific pairing heap implementation. */
+#define ph_gen(a_attr, a_prefix, a_type, a_field, a_cmp)		\
+JEMALLOC_ALWAYS_INLINE int						\
+a_prefix##_ph_cmp(void *a, void *b) {					\
+	return a_cmp((a_type *)a, (a_type *)b);				\
+}									\
+									\
+a_attr void								\
+a_prefix##_new(a_prefix##_t *ph) {					\
+	ph_new(&ph->ph);						\
+}									\
+									\
+a_attr bool								\
+a_prefix##_empty(a_prefix##_t *ph) {					\
+	return ph_empty(&ph->ph);					\
+}									\
+									\
+a_attr a_type *								\
+a_prefix##_first(a_prefix##_t *ph) {					\
+	return ph_first(&ph->ph, offsetof(a_type, a_field),		\
+	    &a_prefix##_ph_cmp);					\
+}									\
+									\
+a_attr a_type *								\
+a_prefix##_any(a_prefix##_t *ph) {					\
+	return ph_any(&ph->ph, offsetof(a_type, a_field));		\
+}									\
+									\
+a_attr void								\
+a_prefix##_insert(a_prefix##_t *ph, a_type *phn) {			\
+	ph_insert(&ph->ph, phn, offsetof(a_type, a_field),		\
+	    a_prefix##_ph_cmp);						\
+}									\
+									\
+a_attr a_type *								\
+a_prefix##_remove_first(a_prefix##_t *ph) {				\
+	return ph_remove_first(&ph->ph, offsetof(a_type, a_field),	\
+	    a_prefix##_ph_cmp);						\
+}									\
+									\
+a_attr void								\
+a_prefix##_remove(a_prefix##_t *ph, a_type *phn) {			\
+	ph_remove(&ph->ph, phn, offsetof(a_type, a_field),		\
+	    a_prefix##_ph_cmp);						\
+}									\
+									\
+a_attr a_type *								\
+a_prefix##_remove_any(a_prefix##_t *ph) {				\
+	a_type *ret = a_prefix##_any(ph);				\
+	if (ret != NULL) {						\
+		a_prefix##_remove(ph, ret);				\
+	}								\
+	return ret;							\
+}
+
+#endif /* JEMALLOC_INTERNAL_PH_H */
diff --git a/deps/jemalloc/include/jemalloc/internal/private_namespace.sh b/deps/jemalloc/include/jemalloc/internal/private_namespace.sh
new file mode 100755
index 0000000..6ef1346
--- /dev/null
+++ b/deps/jemalloc/include/jemalloc/internal/private_namespace.sh
@@ -0,0 +1,5 @@
+#!/bin/sh
+
+for symbol in `cat "$@"` ; do
+  echo "#define ${symbol} JEMALLOC_N(${symbol})"
+done
diff --git a/deps/jemalloc/include/jemalloc/internal/private_symbols.sh b/deps/jemalloc/include/jemalloc/internal/private_symbols.sh
new file mode 100755
index 0000000..442a259
--- /dev/null
+++ b/deps/jemalloc/include/jemalloc/internal/private_symbols.sh
@@ -0,0 +1,51 @@
+#!/bin/sh
+#
+# Generate private_symbols[_jet].awk.
+#
+# Usage: private_symbols.sh <sym_prefix> <sym>*
+#
+# <sym_prefix> is typically "" or "_".
+
+sym_prefix=$1
+shift
+
+cat <<EOF
+#!/usr/bin/env awk -f
+
+BEGIN {
+  sym_prefix = "${sym_prefix}"
+  split("\\
+EOF
+
+for public_sym in "$@" ; do
+  cat <<EOF
+        ${sym_prefix}${public_sym} \\
+EOF
+done
+
+cat <<"EOF"
+        ", exported_symbol_names)
+  # Store exported symbol names as keys in exported_symbols.
+  for (i in exported_symbol_names) {
+    exported_symbols[exported_symbol_names[i]] = 1
+  }
+}
+
+# Process 'nm -a <c_source.o>' output.
+#
+# Handle lines like:
+#   0000000000000008 D opt_junk
+#   0000000000007574 T malloc_initialized
+(NF == 3 && $2 ~ /^[ABCDGRSTVW]$/ && !($3 in exported_symbols) && $3 ~ /^[A-Za-z0-9_]+$/) {
+  print substr($3, 1+length(sym_prefix), length($3)-length(sym_prefix))
+}
+
+# Process 'dumpbin /SYMBOLS <c_source.obj>' output.
+#
+# Handle lines like:
+#   353 00008098 SECT4  notype       External     | opt_junk
+#   3F1 00000000 SECT7  notype ()    External     | malloc_initialized
+($3 ~ /^SECT[0-9]+/ && $(NF-2) == "External" && !($NF in exported_symbols)) {
+  print $NF
+}
+EOF
diff --git a/deps/jemalloc/include/jemalloc/internal/prng.h b/deps/jemalloc/include/jemalloc/internal/prng.h
new file mode 100644
index 0000000..14542aa
--- /dev/null
+++ b/deps/jemalloc/include/jemalloc/internal/prng.h
@@ -0,0 +1,168 @@
+#ifndef JEMALLOC_INTERNAL_PRNG_H
+#define JEMALLOC_INTERNAL_PRNG_H
+
+#include "jemalloc/internal/bit_util.h"
+
+/*
+ * Simple linear congruential pseudo-random number generator:
+ *
+ *   prng(y) = (a*x + c) % m
+ *
+ * where the following constants ensure maximal period:
+ *
+ *   a == Odd number (relatively prime to 2^n), and (a-1) is a multiple of 4.
+ *   c == Odd number (relatively prime to 2^n).
+ *   m == 2^32
+ *
+ * See Knuth's TAOCP 3rd Ed., Vol. 2, pg. 17 for details on these constraints.
+ *
+ * This choice of m has the disadvantage that the quality of the bits is
+ * proportional to bit position.  For example, the lowest bit has a cycle of 2,
+ * the next has a cycle of 4, etc.  For this reason, we prefer to use the upper
+ * bits.
+ */
+
+/******************************************************************************/
+/* INTERNAL DEFINITIONS -- IGNORE */
+/******************************************************************************/
+#define PRNG_A_32	UINT32_C(1103515241)
+#define PRNG_C_32	UINT32_C(12347)
+
+#define PRNG_A_64	UINT64_C(6364136223846793005)
+#define PRNG_C_64	UINT64_C(1442695040888963407)
+
+JEMALLOC_ALWAYS_INLINE uint32_t
+prng_state_next_u32(uint32_t state) {
+	return (state * PRNG_A_32) + PRNG_C_32;
+}
+
+JEMALLOC_ALWAYS_INLINE uint64_t
+prng_state_next_u64(uint64_t state) {
+	return (state * PRNG_A_64) + PRNG_C_64;
+}
+
+JEMALLOC_ALWAYS_INLINE size_t
+prng_state_next_zu(size_t state) {
+#if LG_SIZEOF_PTR == 2
+	return (state * PRNG_A_32) + PRNG_C_32;
+#elif LG_SIZEOF_PTR == 3
+	return (state * PRNG_A_64) + PRNG_C_64;
+#else
+#error Unsupported pointer size
+#endif
+}
+
+/******************************************************************************/
+/* BEGIN PUBLIC API */
+/******************************************************************************/
+
+/*
+ * The prng_lg_range functions give a uniform int in the half-open range [0,
+ * 2**lg_range).
+ */
+
+JEMALLOC_ALWAYS_INLINE uint32_t
+prng_lg_range_u32(uint32_t *state, unsigned lg_range) {
+	assert(lg_range > 0);
+	assert(lg_range <= 32);
+
+	*state = prng_state_next_u32(*state);
+	uint32_t ret = *state >> (32 - lg_range);
+
+	return ret;
+}
+
+JEMALLOC_ALWAYS_INLINE uint64_t
+prng_lg_range_u64(uint64_t *state, unsigned lg_range) {
+	assert(lg_range > 0);
+	assert(lg_range <= 64);
+
+	*state = prng_state_next_u64(*state);
+	uint64_t ret = *state >> (64 - lg_range);
+
+	return ret;
+}
+
+JEMALLOC_ALWAYS_INLINE size_t
+prng_lg_range_zu(size_t *state, unsigned lg_range) {
+	assert(lg_range > 0);
+	assert(lg_range <= ZU(1) << (3 + LG_SIZEOF_PTR));
+
+	*state = prng_state_next_zu(*state);
+	size_t ret = *state >> ((ZU(1) << (3 + LG_SIZEOF_PTR)) - lg_range);
+
+	return ret;
+}
+
+/*
+ * The prng_range functions behave like the prng_lg_range, but return a result
+ * in [0, range) instead of [0, 2**lg_range).
+ */
+
+JEMALLOC_ALWAYS_INLINE uint32_t
+prng_range_u32(uint32_t *state, uint32_t range) {
+	assert(range != 0);
+	/*
+	 * If range were 1, lg_range would be 0, so the shift in
+	 * prng_lg_range_u32 would be a shift of a 32-bit variable by 32 bits,
+	 * which is UB.  Just handle this case as a one-off.
+	 */
+	if (range == 1) {
+		return 0;
+	}
+
+	/* Compute the ceiling of lg(range). */
+	unsigned lg_range = ffs_u32(pow2_ceil_u32(range));
+
+	/* Generate a result in [0..range) via repeated trial. */
+	uint32_t ret;
+	do {
+		ret = prng_lg_range_u32(state, lg_range);
+	} while (ret >= range);
+
+	return ret;
+}
+
+JEMALLOC_ALWAYS_INLINE uint64_t
+prng_range_u64(uint64_t *state, uint64_t range) {
+	assert(range != 0);
+
+	/* See the note in prng_range_u32. */
+	if (range == 1) {
+		return 0;
+	}
+
+	/* Compute the ceiling of lg(range). */
+	unsigned lg_range = ffs_u64(pow2_ceil_u64(range));
+
+	/* Generate a result in [0..range) via repeated trial. */
+	uint64_t ret;
+	do {
+		ret = prng_lg_range_u64(state, lg_range);
+	} while (ret >= range);
+
+	return ret;
+}
+
+JEMALLOC_ALWAYS_INLINE size_t
+prng_range_zu(size_t *state, size_t range) {
+	assert(range != 0);
+
+	/* See the note in prng_range_u32. */
+	if (range == 1) {
+		return 0;
+	}
+
+	/* Compute the ceiling of lg(range). */
+	unsigned lg_range = ffs_u64(pow2_ceil_u64(range));
+
+	/* Generate a result in [0..range) via repeated trial. */
+	size_t ret;
+	do {
+		ret = prng_lg_range_zu(state, lg_range);
+	} while (ret >= range);
+
+	return ret;
+}
+
+#endif /* JEMALLOC_INTERNAL_PRNG_H */
diff --git a/deps/jemalloc/include/jemalloc/internal/prof_data.h b/deps/jemalloc/include/jemalloc/internal/prof_data.h
new file mode 100644
index 0000000..4c8e22c
--- /dev/null
+++ b/deps/jemalloc/include/jemalloc/internal/prof_data.h
@@ -0,0 +1,37 @@
+#ifndef JEMALLOC_INTERNAL_PROF_DATA_H
+#define JEMALLOC_INTERNAL_PROF_DATA_H
+
+#include "jemalloc/internal/mutex.h"
+
+extern malloc_mutex_t bt2gctx_mtx;
+extern malloc_mutex_t tdatas_mtx;
+extern malloc_mutex_t prof_dump_mtx;
+
+extern malloc_mutex_t *gctx_locks;
+extern malloc_mutex_t *tdata_locks;
+
+extern size_t prof_unbiased_sz[PROF_SC_NSIZES];
+extern size_t prof_shifted_unbiased_cnt[PROF_SC_NSIZES];
+
+void prof_bt_hash(const void *key, size_t r_hash[2]);
+bool prof_bt_keycomp(const void *k1, const void *k2);
+
+bool prof_data_init(tsd_t *tsd);
+prof_tctx_t *prof_lookup(tsd_t *tsd, prof_bt_t *bt);
+char *prof_thread_name_alloc(tsd_t *tsd, const char *thread_name);
+int prof_thread_name_set_impl(tsd_t *tsd, const char *thread_name);
+void prof_unbias_map_init();
+void prof_dump_impl(tsd_t *tsd, write_cb_t *prof_dump_write, void *cbopaque,
+    prof_tdata_t *tdata, bool leakcheck);
+prof_tdata_t * prof_tdata_init_impl(tsd_t *tsd, uint64_t thr_uid,
+    uint64_t thr_discrim, char *thread_name, bool active);
+void prof_tdata_detach(tsd_t *tsd, prof_tdata_t *tdata);
+void prof_reset(tsd_t *tsd, size_t lg_sample);
+void prof_tctx_try_destroy(tsd_t *tsd, prof_tctx_t *tctx);
+
+/* Used in unit tests. */
+size_t prof_tdata_count(void);
+size_t prof_bt_count(void);
+void prof_cnt_all(prof_cnt_t *cnt_all);
+
+#endif /* JEMALLOC_INTERNAL_PROF_DATA_H */
diff --git a/deps/jemalloc/include/jemalloc/internal/prof_externs.h b/deps/jemalloc/include/jemalloc/internal/prof_externs.h
new file mode 100644
index 0000000..bdff134
--- /dev/null
+++ b/deps/jemalloc/include/jemalloc/internal/prof_externs.h
@@ -0,0 +1,95 @@
+#ifndef JEMALLOC_INTERNAL_PROF_EXTERNS_H
+#define JEMALLOC_INTERNAL_PROF_EXTERNS_H
+
+#include "jemalloc/internal/mutex.h"
+#include "jemalloc/internal/prof_hook.h"
+
+extern bool opt_prof;
+extern bool opt_prof_active;
+extern bool opt_prof_thread_active_init;
+extern size_t opt_lg_prof_sample;    /* Mean bytes between samples. */
+extern ssize_t opt_lg_prof_interval; /* lg(prof_interval). */
+extern bool opt_prof_gdump;          /* High-water memory dumping. */
+extern bool opt_prof_final;          /* Final profile dumping. */
+extern bool opt_prof_leak;           /* Dump leak summary at exit. */
+extern bool opt_prof_leak_error;     /* Exit with error code if memory leaked */
+extern bool opt_prof_accum;          /* Report cumulative bytes. */
+extern bool opt_prof_log;            /* Turn logging on at boot. */
+extern char opt_prof_prefix[
+    /* Minimize memory bloat for non-prof builds. */
+#ifdef JEMALLOC_PROF
+    PATH_MAX +
+#endif
+    1];
+extern bool opt_prof_unbias;
+
+/* For recording recent allocations */
+extern ssize_t opt_prof_recent_alloc_max;
+
+/* Whether to use thread name provided by the system or by mallctl. */
+extern bool opt_prof_sys_thread_name;
+
+/* Whether to record per size class counts and request size totals. */
+extern bool opt_prof_stats;
+
+/* Accessed via prof_active_[gs]et{_unlocked,}(). */
+extern bool prof_active_state;
+
+/* Accessed via prof_gdump_[gs]et{_unlocked,}(). */
+extern bool prof_gdump_val;
+
+/* Profile dump interval, measured in bytes allocated. */
+extern uint64_t prof_interval;
+
+/*
+ * Initialized as opt_lg_prof_sample, and potentially modified during profiling
+ * resets.
+ */
+extern size_t lg_prof_sample;
+
+extern bool prof_booted;
+
+void prof_backtrace_hook_set(prof_backtrace_hook_t hook);
+prof_backtrace_hook_t prof_backtrace_hook_get();
+
+void prof_dump_hook_set(prof_dump_hook_t hook);
+prof_dump_hook_t prof_dump_hook_get();
+
+/* Functions only accessed in prof_inlines.h */
+prof_tdata_t *prof_tdata_init(tsd_t *tsd);
+prof_tdata_t *prof_tdata_reinit(tsd_t *tsd, prof_tdata_t *tdata);
+
+void prof_alloc_rollback(tsd_t *tsd, prof_tctx_t *tctx);
+void prof_malloc_sample_object(tsd_t *tsd, const void *ptr, size_t size,
+    size_t usize, prof_tctx_t *tctx);
+void prof_free_sampled_object(tsd_t *tsd, size_t usize, prof_info_t *prof_info);
+prof_tctx_t *prof_tctx_create(tsd_t *tsd);
+void prof_idump(tsdn_t *tsdn);
+bool prof_mdump(tsd_t *tsd, const char *filename);
+void prof_gdump(tsdn_t *tsdn);
+
+void prof_tdata_cleanup(tsd_t *tsd);
+bool prof_active_get(tsdn_t *tsdn);
+bool prof_active_set(tsdn_t *tsdn, bool active);
+const char *prof_thread_name_get(tsd_t *tsd);
+int prof_thread_name_set(tsd_t *tsd, const char *thread_name);
+bool prof_thread_active_get(tsd_t *tsd);
+bool prof_thread_active_set(tsd_t *tsd, bool active);
+bool prof_thread_active_init_get(tsdn_t *tsdn);
+bool prof_thread_active_init_set(tsdn_t *tsdn, bool active_init);
+bool prof_gdump_get(tsdn_t *tsdn);
+bool prof_gdump_set(tsdn_t *tsdn, bool active);
+void prof_boot0(void);
+void prof_boot1(void);
+bool prof_boot2(tsd_t *tsd, base_t *base);
+void prof_prefork0(tsdn_t *tsdn);
+void prof_prefork1(tsdn_t *tsdn);
+void prof_postfork_parent(tsdn_t *tsdn);
+void prof_postfork_child(tsdn_t *tsdn);
+
+/* Only accessed by thread event. */
+uint64_t prof_sample_new_event_wait(tsd_t *tsd);
+uint64_t prof_sample_postponed_event_wait(tsd_t *tsd);
+void prof_sample_event_handler(tsd_t *tsd, uint64_t elapsed);
+
+#endif /* JEMALLOC_INTERNAL_PROF_EXTERNS_H */
diff --git a/deps/jemalloc/include/jemalloc/internal/prof_hook.h b/deps/jemalloc/include/jemalloc/internal/prof_hook.h
new file mode 100644
index 0000000..150d19d
--- /dev/null
+++ b/deps/jemalloc/include/jemalloc/internal/prof_hook.h
@@ -0,0 +1,21 @@
+#ifndef JEMALLOC_INTERNAL_PROF_HOOK_H
+#define JEMALLOC_INTERNAL_PROF_HOOK_H
+
+/*
+ * The hooks types of which are declared in this file are experimental and
+ * undocumented, thus the typedefs are located in an 'internal' header.
+ */
+
+/*
+ * A hook to mock out backtrace functionality.  This can be handy, since it's
+ * otherwise difficult to guarantee that two allocations are reported as coming
+ * from the exact same stack trace in the presence of an optimizing compiler.
+ */
+typedef void (*prof_backtrace_hook_t)(void **, unsigned *, unsigned);
+
+/*
+ * A callback hook that notifies about recently dumped heap profile.
+ */
+typedef void (*prof_dump_hook_t)(const char *filename);
+
+#endif /* JEMALLOC_INTERNAL_PROF_HOOK_H */
diff --git a/deps/jemalloc/include/jemalloc/internal/prof_inlines.h b/deps/jemalloc/include/jemalloc/internal/prof_inlines.h
new file mode 100644
index 0000000..a8e7e7f
--- /dev/null
+++ b/deps/jemalloc/include/jemalloc/internal/prof_inlines.h
@@ -0,0 +1,261 @@
+#ifndef JEMALLOC_INTERNAL_PROF_INLINES_H
+#define JEMALLOC_INTERNAL_PROF_INLINES_H
+
+#include "jemalloc/internal/safety_check.h"
+#include "jemalloc/internal/sz.h"
+#include "jemalloc/internal/thread_event.h"
+
+JEMALLOC_ALWAYS_INLINE void
+prof_active_assert() {
+	cassert(config_prof);
+	/*
+	 * If opt_prof is off, then prof_active must always be off, regardless
+	 * of whether prof_active_mtx is in effect or not.
+	 */
+	assert(opt_prof || !prof_active_state);
+}
+
+JEMALLOC_ALWAYS_INLINE bool
+prof_active_get_unlocked(void) {
+	prof_active_assert();
+	/*
+	 * Even if opt_prof is true, sampling can be temporarily disabled by
+	 * setting prof_active to false.  No locking is used when reading
+	 * prof_active in the fast path, so there are no guarantees regarding
+	 * how long it will take for all threads to notice state changes.
+	 */
+	return prof_active_state;
+}
+
+JEMALLOC_ALWAYS_INLINE bool
+prof_gdump_get_unlocked(void) {
+	/*
+	 * No locking is used when reading prof_gdump_val in the fast path, so
+	 * there are no guarantees regarding how long it will take for all
+	 * threads to notice state changes.
+	 */
+	return prof_gdump_val;
+}
+
+JEMALLOC_ALWAYS_INLINE prof_tdata_t *
+prof_tdata_get(tsd_t *tsd, bool create) {
+	prof_tdata_t *tdata;
+
+	cassert(config_prof);
+
+	tdata = tsd_prof_tdata_get(tsd);
+	if (create) {
+		assert(tsd_reentrancy_level_get(tsd) == 0);
+		if (unlikely(tdata == NULL)) {
+			if (tsd_nominal(tsd)) {
+				tdata = prof_tdata_init(tsd);
+				tsd_prof_tdata_set(tsd, tdata);
+			}
+		} else if (unlikely(tdata->expired)) {
+			tdata = prof_tdata_reinit(tsd, tdata);
+			tsd_prof_tdata_set(tsd, tdata);
+		}
+		assert(tdata == NULL || tdata->attached);
+	}
+
+	return tdata;
+}
+
+JEMALLOC_ALWAYS_INLINE void
+prof_info_get(tsd_t *tsd, const void *ptr, emap_alloc_ctx_t *alloc_ctx,
+    prof_info_t *prof_info) {
+	cassert(config_prof);
+	assert(ptr != NULL);
+	assert(prof_info != NULL);
+
+	arena_prof_info_get(tsd, ptr, alloc_ctx, prof_info, false);
+}
+
+JEMALLOC_ALWAYS_INLINE void
+prof_info_get_and_reset_recent(tsd_t *tsd, const void *ptr,
+    emap_alloc_ctx_t *alloc_ctx, prof_info_t *prof_info) {
+	cassert(config_prof);
+	assert(ptr != NULL);
+	assert(prof_info != NULL);
+
+	arena_prof_info_get(tsd, ptr, alloc_ctx, prof_info, true);
+}
+
+JEMALLOC_ALWAYS_INLINE void
+prof_tctx_reset(tsd_t *tsd, const void *ptr, emap_alloc_ctx_t *alloc_ctx) {
+	cassert(config_prof);
+	assert(ptr != NULL);
+
+	arena_prof_tctx_reset(tsd, ptr, alloc_ctx);
+}
+
+JEMALLOC_ALWAYS_INLINE void
+prof_tctx_reset_sampled(tsd_t *tsd, const void *ptr) {
+	cassert(config_prof);
+	assert(ptr != NULL);
+
+	arena_prof_tctx_reset_sampled(tsd, ptr);
+}
+
+JEMALLOC_ALWAYS_INLINE void
+prof_info_set(tsd_t *tsd, edata_t *edata, prof_tctx_t *tctx, size_t size) {
+	cassert(config_prof);
+	assert(edata != NULL);
+	assert((uintptr_t)tctx > (uintptr_t)1U);
+
+	arena_prof_info_set(tsd, edata, tctx, size);
+}
+
+JEMALLOC_ALWAYS_INLINE bool
+prof_sample_should_skip(tsd_t *tsd, bool sample_event) {
+	cassert(config_prof);
+
+	/* Fastpath: no need to load tdata */
+	if (likely(!sample_event)) {
+		return true;
+	}
+
+	/*
+	 * sample_event is always obtained from the thread event module, and
+	 * whenever it's true, it means that the thread event module has
+	 * already checked the reentrancy level.
+	 */
+	assert(tsd_reentrancy_level_get(tsd) == 0);
+
+	prof_tdata_t *tdata = prof_tdata_get(tsd, true);
+	if (unlikely(tdata == NULL)) {
+		return true;
+	}
+
+	return !tdata->active;
+}
+
+JEMALLOC_ALWAYS_INLINE prof_tctx_t *
+prof_alloc_prep(tsd_t *tsd, bool prof_active, bool sample_event) {
+	prof_tctx_t *ret;
+
+	if (!prof_active ||
+	    likely(prof_sample_should_skip(tsd, sample_event))) {
+		ret = (prof_tctx_t *)(uintptr_t)1U;
+	} else {
+		ret = prof_tctx_create(tsd);
+	}
+
+	return ret;
+}
+
+JEMALLOC_ALWAYS_INLINE void
+prof_malloc(tsd_t *tsd, const void *ptr, size_t size, size_t usize,
+    emap_alloc_ctx_t *alloc_ctx, prof_tctx_t *tctx) {
+	cassert(config_prof);
+	assert(ptr != NULL);
+	assert(usize == isalloc(tsd_tsdn(tsd), ptr));
+
+	if (unlikely((uintptr_t)tctx > (uintptr_t)1U)) {
+		prof_malloc_sample_object(tsd, ptr, size, usize, tctx);
+	} else {
+		prof_tctx_reset(tsd, ptr, alloc_ctx);
+	}
+}
+
+JEMALLOC_ALWAYS_INLINE void
+prof_realloc(tsd_t *tsd, const void *ptr, size_t size, size_t usize,
+    prof_tctx_t *tctx, bool prof_active, const void *old_ptr, size_t old_usize,
+    prof_info_t *old_prof_info, bool sample_event) {
+	bool sampled, old_sampled, moved;
+
+	cassert(config_prof);
+	assert(ptr != NULL || (uintptr_t)tctx <= (uintptr_t)1U);
+
+	if (prof_active && ptr != NULL) {
+		assert(usize == isalloc(tsd_tsdn(tsd), ptr));
+		if (prof_sample_should_skip(tsd, sample_event)) {
+			/*
+			 * Don't sample.  The usize passed to prof_alloc_prep()
+			 * was larger than what actually got allocated, so a
+			 * backtrace was captured for this allocation, even
+			 * though its actual usize was insufficient to cross the
+			 * sample threshold.
+			 */
+			prof_alloc_rollback(tsd, tctx);
+			tctx = (prof_tctx_t *)(uintptr_t)1U;
+		}
+	}
+
+	sampled = ((uintptr_t)tctx > (uintptr_t)1U);
+	old_sampled = ((uintptr_t)old_prof_info->alloc_tctx > (uintptr_t)1U);
+	moved = (ptr != old_ptr);
+
+	if (unlikely(sampled)) {
+		prof_malloc_sample_object(tsd, ptr, size, usize, tctx);
+	} else if (moved) {
+		prof_tctx_reset(tsd, ptr, NULL);
+	} else if (unlikely(old_sampled)) {
+		/*
+		 * prof_tctx_reset() would work for the !moved case as well,
+		 * but prof_tctx_reset_sampled() is slightly cheaper, and the
+		 * proper thing to do here in the presence of explicit
+		 * knowledge re: moved state.
+		 */
+		prof_tctx_reset_sampled(tsd, ptr);
+	} else {
+		prof_info_t prof_info;
+		prof_info_get(tsd, ptr, NULL, &prof_info);
+		assert((uintptr_t)prof_info.alloc_tctx == (uintptr_t)1U);
+	}
+
+	/*
+	 * The prof_free_sampled_object() call must come after the
+	 * prof_malloc_sample_object() call, because tctx and old_tctx may be
+	 * the same, in which case reversing the call order could cause the tctx
+	 * to be prematurely destroyed as a side effect of momentarily zeroed
+	 * counters.
+	 */
+	if (unlikely(old_sampled)) {
+		prof_free_sampled_object(tsd, old_usize, old_prof_info);
+	}
+}
+
+JEMALLOC_ALWAYS_INLINE size_t
+prof_sample_align(size_t orig_align) {
+	/*
+	 * Enforce page alignment, so that sampled allocations can be identified
+	 * w/o metadata lookup.
+	 */
+	assert(opt_prof);
+	return (opt_cache_oblivious && orig_align < PAGE) ? PAGE :
+	    orig_align;
+}
+
+JEMALLOC_ALWAYS_INLINE bool
+prof_sample_aligned(const void *ptr) {
+	return ((uintptr_t)ptr & PAGE_MASK) == 0;
+}
+
+JEMALLOC_ALWAYS_INLINE bool
+prof_sampled(tsd_t *tsd, const void *ptr) {
+	prof_info_t prof_info;
+	prof_info_get(tsd, ptr, NULL, &prof_info);
+	bool sampled = (uintptr_t)prof_info.alloc_tctx > (uintptr_t)1U;
+	if (sampled) {
+		assert(prof_sample_aligned(ptr));
+	}
+	return sampled;
+}
+
+JEMALLOC_ALWAYS_INLINE void
+prof_free(tsd_t *tsd, const void *ptr, size_t usize,
+    emap_alloc_ctx_t *alloc_ctx) {
+	prof_info_t prof_info;
+	prof_info_get_and_reset_recent(tsd, ptr, alloc_ctx, &prof_info);
+
+	cassert(config_prof);
+	assert(usize == isalloc(tsd_tsdn(tsd), ptr));
+
+	if (unlikely((uintptr_t)prof_info.alloc_tctx > (uintptr_t)1U)) {
+		assert(prof_sample_aligned(ptr));
+		prof_free_sampled_object(tsd, usize, &prof_info);
+	}
+}
+
+#endif /* JEMALLOC_INTERNAL_PROF_INLINES_H */
diff --git a/deps/jemalloc/include/jemalloc/internal/prof_log.h b/deps/jemalloc/include/jemalloc/internal/prof_log.h
new file mode 100644
index 0000000..ccb557d
--- /dev/null
+++ b/deps/jemalloc/include/jemalloc/internal/prof_log.h
@@ -0,0 +1,22 @@
+#ifndef JEMALLOC_INTERNAL_PROF_LOG_H
+#define JEMALLOC_INTERNAL_PROF_LOG_H
+
+#include "jemalloc/internal/mutex.h"
+
+extern malloc_mutex_t log_mtx;
+
+void prof_try_log(tsd_t *tsd, size_t usize, prof_info_t *prof_info);
+bool prof_log_init(tsd_t *tsdn);
+
+/* Used in unit tests. */
+size_t prof_log_bt_count(void);
+size_t prof_log_alloc_count(void);
+size_t prof_log_thr_count(void);
+bool prof_log_is_logging(void);
+bool prof_log_rep_check(void);
+void prof_log_dummy_set(bool new_value);
+
+bool prof_log_start(tsdn_t *tsdn, const char *filename);
+bool prof_log_stop(tsdn_t *tsdn);
+
+#endif /* JEMALLOC_INTERNAL_PROF_LOG_H */
diff --git a/deps/jemalloc/include/jemalloc/internal/prof_recent.h b/deps/jemalloc/include/jemalloc/internal/prof_recent.h
new file mode 100644
index 0000000..df41023
--- /dev/null
+++ b/deps/jemalloc/include/jemalloc/internal/prof_recent.h
@@ -0,0 +1,23 @@
+#ifndef JEMALLOC_INTERNAL_PROF_RECENT_H
+#define JEMALLOC_INTERNAL_PROF_RECENT_H
+
+extern malloc_mutex_t prof_recent_alloc_mtx;
+extern malloc_mutex_t prof_recent_dump_mtx;
+
+bool prof_recent_alloc_prepare(tsd_t *tsd, prof_tctx_t *tctx);
+void prof_recent_alloc(tsd_t *tsd, edata_t *edata, size_t size, size_t usize);
+void prof_recent_alloc_reset(tsd_t *tsd, edata_t *edata);
+bool prof_recent_init();
+void edata_prof_recent_alloc_init(edata_t *edata);
+
+/* Used in unit tests. */
+typedef ql_head(prof_recent_t) prof_recent_list_t;
+extern prof_recent_list_t prof_recent_alloc_list;
+edata_t *prof_recent_alloc_edata_get_no_lock_test(const prof_recent_t *node);
+prof_recent_t *edata_prof_recent_alloc_get_no_lock_test(const edata_t *edata);
+
+ssize_t prof_recent_alloc_max_ctl_read();
+ssize_t prof_recent_alloc_max_ctl_write(tsd_t *tsd, ssize_t max);
+void prof_recent_alloc_dump(tsd_t *tsd, write_cb_t *write_cb, void *cbopaque);
+
+#endif /* JEMALLOC_INTERNAL_PROF_RECENT_H */
diff --git a/deps/jemalloc/include/jemalloc/internal/prof_stats.h b/deps/jemalloc/include/jemalloc/internal/prof_stats.h
new file mode 100644
index 0000000..7954e82
--- /dev/null
+++ b/deps/jemalloc/include/jemalloc/internal/prof_stats.h
@@ -0,0 +1,17 @@
+#ifndef JEMALLOC_INTERNAL_PROF_STATS_H
+#define JEMALLOC_INTERNAL_PROF_STATS_H
+
+typedef struct prof_stats_s prof_stats_t;
+struct prof_stats_s {
+	uint64_t req_sum;
+	uint64_t count;
+};
+
+extern malloc_mutex_t prof_stats_mtx;
+
+void prof_stats_inc(tsd_t *tsd, szind_t ind, size_t size);
+void prof_stats_dec(tsd_t *tsd, szind_t ind, size_t size);
+void prof_stats_get_live(tsd_t *tsd, szind_t ind, prof_stats_t *stats);
+void prof_stats_get_accum(tsd_t *tsd, szind_t ind, prof_stats_t *stats);
+
+#endif /* JEMALLOC_INTERNAL_PROF_STATS_H */
diff --git a/deps/jemalloc/include/jemalloc/internal/prof_structs.h b/deps/jemalloc/include/jemalloc/internal/prof_structs.h
new file mode 100644
index 0000000..dd22115
--- /dev/null
+++ b/deps/jemalloc/include/jemalloc/internal/prof_structs.h
@@ -0,0 +1,221 @@
+#ifndef JEMALLOC_INTERNAL_PROF_STRUCTS_H
+#define JEMALLOC_INTERNAL_PROF_STRUCTS_H
+
+#include "jemalloc/internal/ckh.h"
+#include "jemalloc/internal/edata.h"
+#include "jemalloc/internal/mutex.h"
+#include "jemalloc/internal/prng.h"
+#include "jemalloc/internal/rb.h"
+
+struct prof_bt_s {
+	/* Backtrace, stored as len program counters. */
+	void		**vec;
+	unsigned	len;
+};
+
+#ifdef JEMALLOC_PROF_LIBGCC
+/* Data structure passed to libgcc _Unwind_Backtrace() callback functions. */
+typedef struct {
+	void 		**vec;
+	unsigned	*len;
+	unsigned	max;
+} prof_unwind_data_t;
+#endif
+
+struct prof_cnt_s {
+	/* Profiling counters. */
+	uint64_t	curobjs;
+	uint64_t	curobjs_shifted_unbiased;
+	uint64_t	curbytes;
+	uint64_t	curbytes_unbiased;
+	uint64_t	accumobjs;
+	uint64_t	accumobjs_shifted_unbiased;
+	uint64_t	accumbytes;
+	uint64_t	accumbytes_unbiased;
+};
+
+typedef enum {
+	prof_tctx_state_initializing,
+	prof_tctx_state_nominal,
+	prof_tctx_state_dumping,
+	prof_tctx_state_purgatory /* Dumper must finish destroying. */
+} prof_tctx_state_t;
+
+struct prof_tctx_s {
+	/* Thread data for thread that performed the allocation. */
+	prof_tdata_t		*tdata;
+
+	/*
+	 * Copy of tdata->thr_{uid,discrim}, necessary because tdata may be
+	 * defunct during teardown.
+	 */
+	uint64_t		thr_uid;
+	uint64_t		thr_discrim;
+
+	/*
+	 * Reference count of how many times this tctx object is referenced in
+	 * recent allocation / deallocation records, protected by tdata->lock.
+	 */
+	uint64_t		recent_count;
+
+	/* Profiling counters, protected by tdata->lock. */
+	prof_cnt_t		cnts;
+
+	/* Associated global context. */
+	prof_gctx_t		*gctx;
+
+	/*
+	 * UID that distinguishes multiple tctx's created by the same thread,
+	 * but coexisting in gctx->tctxs.  There are two ways that such
+	 * coexistence can occur:
+	 * - A dumper thread can cause a tctx to be retained in the purgatory
+	 *   state.
+	 * - Although a single "producer" thread must create all tctx's which
+	 *   share the same thr_uid, multiple "consumers" can each concurrently
+	 *   execute portions of prof_tctx_destroy().  prof_tctx_destroy() only
+	 *   gets called once each time cnts.cur{objs,bytes} drop to 0, but this
+	 *   threshold can be hit again before the first consumer finishes
+	 *   executing prof_tctx_destroy().
+	 */
+	uint64_t		tctx_uid;
+
+	/* Linkage into gctx's tctxs. */
+	rb_node(prof_tctx_t)	tctx_link;
+
+	/*
+	 * True during prof_alloc_prep()..prof_malloc_sample_object(), prevents
+	 * sample vs destroy race.
+	 */
+	bool			prepared;
+
+	/* Current dump-related state, protected by gctx->lock. */
+	prof_tctx_state_t	state;
+
+	/*
+	 * Copy of cnts snapshotted during early dump phase, protected by
+	 * dump_mtx.
+	 */
+	prof_cnt_t		dump_cnts;
+};
+typedef rb_tree(prof_tctx_t) prof_tctx_tree_t;
+
+struct prof_info_s {
+	/* Time when the allocation was made. */
+	nstime_t		alloc_time;
+	/* Points to the prof_tctx_t corresponding to the allocation. */
+	prof_tctx_t		*alloc_tctx;
+	/* Allocation request size. */
+	size_t			alloc_size;
+};
+
+struct prof_gctx_s {
+	/* Protects nlimbo, cnt_summed, and tctxs. */
+	malloc_mutex_t		*lock;
+
+	/*
+	 * Number of threads that currently cause this gctx to be in a state of
+	 * limbo due to one of:
+	 *   - Initializing this gctx.
+	 *   - Initializing per thread counters associated with this gctx.
+	 *   - Preparing to destroy this gctx.
+	 *   - Dumping a heap profile that includes this gctx.
+	 * nlimbo must be 1 (single destroyer) in order to safely destroy the
+	 * gctx.
+	 */
+	unsigned		nlimbo;
+
+	/*
+	 * Tree of profile counters, one for each thread that has allocated in
+	 * this context.
+	 */
+	prof_tctx_tree_t	tctxs;
+
+	/* Linkage for tree of contexts to be dumped. */
+	rb_node(prof_gctx_t)	dump_link;
+
+	/* Temporary storage for summation during dump. */
+	prof_cnt_t		cnt_summed;
+
+	/* Associated backtrace. */
+	prof_bt_t		bt;
+
+	/* Backtrace vector, variable size, referred to by bt. */
+	void			*vec[1];
+};
+typedef rb_tree(prof_gctx_t) prof_gctx_tree_t;
+
+struct prof_tdata_s {
+	malloc_mutex_t		*lock;
+
+	/* Monotonically increasing unique thread identifier. */
+	uint64_t		thr_uid;
+
+	/*
+	 * Monotonically increasing discriminator among tdata structures
+	 * associated with the same thr_uid.
+	 */
+	uint64_t		thr_discrim;
+
+	/* Included in heap profile dumps if non-NULL. */
+	char			*thread_name;
+
+	bool			attached;
+	bool			expired;
+
+	rb_node(prof_tdata_t)	tdata_link;
+
+	/*
+	 * Counter used to initialize prof_tctx_t's tctx_uid.  No locking is
+	 * necessary when incrementing this field, because only one thread ever
+	 * does so.
+	 */
+	uint64_t		tctx_uid_next;
+
+	/*
+	 * Hash of (prof_bt_t *)-->(prof_tctx_t *).  Each thread tracks
+	 * backtraces for which it has non-zero allocation/deallocation counters
+	 * associated with thread-specific prof_tctx_t objects.  Other threads
+	 * may write to prof_tctx_t contents when freeing associated objects.
+	 */
+	ckh_t			bt2tctx;
+
+	/* State used to avoid dumping while operating on prof internals. */
+	bool			enq;
+	bool			enq_idump;
+	bool			enq_gdump;
+
+	/*
+	 * Set to true during an early dump phase for tdata's which are
+	 * currently being dumped.  New threads' tdata's have this initialized
+	 * to false so that they aren't accidentally included in later dump
+	 * phases.
+	 */
+	bool			dumping;
+
+	/*
+	 * True if profiling is active for this tdata's thread
+	 * (thread.prof.active mallctl).
+	 */
+	bool			active;
+
+	/* Temporary storage for summation during dump. */
+	prof_cnt_t		cnt_summed;
+
+	/* Backtrace vector, used for calls to prof_backtrace(). */
+	void			*vec[PROF_BT_MAX];
+};
+typedef rb_tree(prof_tdata_t) prof_tdata_tree_t;
+
+struct prof_recent_s {
+	nstime_t alloc_time;
+	nstime_t dalloc_time;
+
+	ql_elm(prof_recent_t) link;
+	size_t size;
+	size_t usize;
+	atomic_p_t alloc_edata; /* NULL means allocation has been freed. */
+	prof_tctx_t *alloc_tctx;
+	prof_tctx_t *dalloc_tctx;
+};
+
+#endif /* JEMALLOC_INTERNAL_PROF_STRUCTS_H */
diff --git a/deps/jemalloc/include/jemalloc/internal/prof_sys.h b/deps/jemalloc/include/jemalloc/internal/prof_sys.h
new file mode 100644
index 0000000..3d25a42
--- /dev/null
+++ b/deps/jemalloc/include/jemalloc/internal/prof_sys.h
@@ -0,0 +1,30 @@
+#ifndef JEMALLOC_INTERNAL_PROF_SYS_H
+#define JEMALLOC_INTERNAL_PROF_SYS_H
+
+extern malloc_mutex_t prof_dump_filename_mtx;
+extern base_t *prof_base;
+
+void bt_init(prof_bt_t *bt, void **vec);
+void prof_backtrace(tsd_t *tsd, prof_bt_t *bt);
+void prof_hooks_init();
+void prof_unwind_init();
+void prof_sys_thread_name_fetch(tsd_t *tsd);
+int prof_getpid(void);
+void prof_get_default_filename(tsdn_t *tsdn, char *filename, uint64_t ind);
+bool prof_prefix_set(tsdn_t *tsdn, const char *prefix);
+void prof_fdump_impl(tsd_t *tsd);
+void prof_idump_impl(tsd_t *tsd);
+bool prof_mdump_impl(tsd_t *tsd, const char *filename);
+void prof_gdump_impl(tsd_t *tsd);
+
+/* Used in unit tests. */
+typedef int (prof_sys_thread_name_read_t)(char *buf, size_t limit);
+extern prof_sys_thread_name_read_t *JET_MUTABLE prof_sys_thread_name_read;
+typedef int (prof_dump_open_file_t)(const char *, int);
+extern prof_dump_open_file_t *JET_MUTABLE prof_dump_open_file;
+typedef ssize_t (prof_dump_write_file_t)(int, const void *, size_t);
+extern prof_dump_write_file_t *JET_MUTABLE prof_dump_write_file;
+typedef int (prof_dump_open_maps_t)();
+extern prof_dump_open_maps_t *JET_MUTABLE prof_dump_open_maps;
+
+#endif /* JEMALLOC_INTERNAL_PROF_SYS_H */
diff --git a/deps/jemalloc/include/jemalloc/internal/prof_types.h b/deps/jemalloc/include/jemalloc/internal/prof_types.h
new file mode 100644
index 0000000..ba62865
--- /dev/null
+++ b/deps/jemalloc/include/jemalloc/internal/prof_types.h
@@ -0,0 +1,75 @@
+#ifndef JEMALLOC_INTERNAL_PROF_TYPES_H
+#define JEMALLOC_INTERNAL_PROF_TYPES_H
+
+typedef struct prof_bt_s prof_bt_t;
+typedef struct prof_cnt_s prof_cnt_t;
+typedef struct prof_tctx_s prof_tctx_t;
+typedef struct prof_info_s prof_info_t;
+typedef struct prof_gctx_s prof_gctx_t;
+typedef struct prof_tdata_s prof_tdata_t;
+typedef struct prof_recent_s prof_recent_t;
+
+/* Option defaults. */
+#ifdef JEMALLOC_PROF
+#  define PROF_PREFIX_DEFAULT		"jeprof"
+#else
+#  define PROF_PREFIX_DEFAULT		""
+#endif
+#define LG_PROF_SAMPLE_DEFAULT		19
+#define LG_PROF_INTERVAL_DEFAULT	-1
+
+/*
+ * Hard limit on stack backtrace depth.  The version of prof_backtrace() that
+ * is based on __builtin_return_address() necessarily has a hard-coded number
+ * of backtrace frame handlers, and should be kept in sync with this setting.
+ */
+#define PROF_BT_MAX			128
+
+/* Initial hash table size. */
+#define PROF_CKH_MINITEMS		64
+
+/* Size of memory buffer to use when writing dump files. */
+#ifndef JEMALLOC_PROF
+/* Minimize memory bloat for non-prof builds. */
+#  define PROF_DUMP_BUFSIZE		1
+#elif defined(JEMALLOC_DEBUG)
+/* Use a small buffer size in debug build, mainly to facilitate testing. */
+#  define PROF_DUMP_BUFSIZE		16
+#else
+#  define PROF_DUMP_BUFSIZE		65536
+#endif
+
+/* Size of size class related tables */
+#ifdef JEMALLOC_PROF
+#  define PROF_SC_NSIZES		SC_NSIZES
+#else
+/* Minimize memory bloat for non-prof builds. */
+#  define PROF_SC_NSIZES		1
+#endif
+
+/* Size of stack-allocated buffer used by prof_printf(). */
+#define PROF_PRINTF_BUFSIZE		128
+
+/*
+ * Number of mutexes shared among all gctx's.  No space is allocated for these
+ * unless profiling is enabled, so it's okay to over-provision.
+ */
+#define PROF_NCTX_LOCKS			1024
+
+/*
+ * Number of mutexes shared among all tdata's.  No space is allocated for these
+ * unless profiling is enabled, so it's okay to over-provision.
+ */
+#define PROF_NTDATA_LOCKS		256
+
+/* Minimize memory bloat for non-prof builds. */
+#ifdef JEMALLOC_PROF
+#define PROF_DUMP_FILENAME_LEN (PATH_MAX + 1)
+#else
+#define PROF_DUMP_FILENAME_LEN 1
+#endif
+
+/* Default number of recent allocations to record. */
+#define PROF_RECENT_ALLOC_MAX_DEFAULT 0
+
+#endif /* JEMALLOC_INTERNAL_PROF_TYPES_H */
diff --git a/deps/jemalloc/include/jemalloc/internal/psset.h b/deps/jemalloc/include/jemalloc/internal/psset.h
new file mode 100644
index 0000000..e1d6497
--- /dev/null
+++ b/deps/jemalloc/include/jemalloc/internal/psset.h
@@ -0,0 +1,131 @@
+#ifndef JEMALLOC_INTERNAL_PSSET_H
+#define JEMALLOC_INTERNAL_PSSET_H
+
+#include "jemalloc/internal/hpdata.h"
+
+/*
+ * A page-slab set.  What the eset is to PAC, the psset is to HPA.  It maintains
+ * a collection of page-slabs (the intent being that they are backed by
+ * hugepages, or at least could be), and handles allocation and deallocation
+ * requests.
+ */
+
+/*
+ * One more than the maximum pszind_t we will serve out of the HPA.
+ * Practically, we expect only the first few to be actually used.  This
+ * corresponds to a maximum size of of 512MB on systems with 4k pages and
+ * SC_NGROUP == 4, which is already an unreasonably large maximum.  Morally, you
+ * can think of this as being SC_NPSIZES, but there's no sense in wasting that
+ * much space in the arena, making bitmaps that much larger, etc.
+ */
+#define PSSET_NPSIZES 64
+
+/*
+ * We keep two purge lists per page size class; one for hugified hpdatas (at
+ * index 2*pszind), and one for the non-hugified hpdatas (at index 2*pszind +
+ * 1).  This lets us implement a preference for purging non-hugified hpdatas
+ * among similarly-dirty ones.
+ * We reserve the last two indices for empty slabs, in that case purging
+ * hugified ones (which are definitionally all waste) before non-hugified ones
+ * (i.e. reversing the order).
+ */
+#define PSSET_NPURGE_LISTS (2 * PSSET_NPSIZES)
+
+typedef struct psset_bin_stats_s psset_bin_stats_t;
+struct psset_bin_stats_s {
+	/* How many pageslabs are in this bin? */
+	size_t npageslabs;
+	/* Of them, how many pages are active? */
+	size_t nactive;
+	/* And how many are dirty? */
+	size_t ndirty;
+};
+
+typedef struct psset_stats_s psset_stats_t;
+struct psset_stats_s {
+	/*
+	 * The second index is huge stats; nonfull_slabs[pszind][0] contains
+	 * stats for the non-huge slabs in bucket pszind, while
+	 * nonfull_slabs[pszind][1] contains stats for the huge slabs.
+	 */
+	psset_bin_stats_t nonfull_slabs[PSSET_NPSIZES][2];
+
+	/*
+	 * Full slabs don't live in any edata heap, but we still track their
+	 * stats.
+	 */
+	psset_bin_stats_t full_slabs[2];
+
+	/* Empty slabs are similar. */
+	psset_bin_stats_t empty_slabs[2];
+};
+
+typedef struct psset_s psset_t;
+struct psset_s {
+	/*
+	 * The pageslabs, quantized by the size class of the largest contiguous
+	 * free run of pages in a pageslab.
+	 */
+	hpdata_age_heap_t pageslabs[PSSET_NPSIZES];
+	/* Bitmap for which set bits correspond to non-empty heaps. */
+	fb_group_t pageslab_bitmap[FB_NGROUPS(PSSET_NPSIZES)];
+	/*
+	 * The sum of all bin stats in stats.  This lets us quickly answer
+	 * queries for the number of dirty, active, and retained pages in the
+	 * entire set.
+	 */
+	psset_bin_stats_t merged_stats;
+	psset_stats_t stats;
+	/*
+	 * Slabs with no active allocations, but which are allowed to serve new
+	 * allocations.
+	 */
+	hpdata_empty_list_t empty;
+	/*
+	 * Slabs which are available to be purged, ordered by how much we want
+	 * to purge them (with later indices indicating slabs we want to purge
+	 * more).
+	 */
+	hpdata_purge_list_t to_purge[PSSET_NPURGE_LISTS];
+	/* Bitmap for which set bits correspond to non-empty purge lists. */
+	fb_group_t purge_bitmap[FB_NGROUPS(PSSET_NPURGE_LISTS)];
+	/* Slabs which are available to be hugified. */
+	hpdata_hugify_list_t to_hugify;
+};
+
+void psset_init(psset_t *psset);
+void psset_stats_accum(psset_stats_t *dst, psset_stats_t *src);
+
+/*
+ * Begin or end updating the given pageslab's metadata.  While the pageslab is
+ * being updated, it won't be returned from psset_fit calls.
+ */
+void psset_update_begin(psset_t *psset, hpdata_t *ps);
+void psset_update_end(psset_t *psset, hpdata_t *ps);
+
+/* Analogous to the eset_fit; pick a hpdata to serve the request. */
+hpdata_t *psset_pick_alloc(psset_t *psset, size_t size);
+/* Pick one to purge. */
+hpdata_t *psset_pick_purge(psset_t *psset);
+/* Pick one to hugify. */
+hpdata_t *psset_pick_hugify(psset_t *psset);
+
+void psset_insert(psset_t *psset, hpdata_t *ps);
+void psset_remove(psset_t *psset, hpdata_t *ps);
+
+static inline size_t
+psset_npageslabs(psset_t *psset) {
+	return psset->merged_stats.npageslabs;
+}
+
+static inline size_t
+psset_nactive(psset_t *psset) {
+	return psset->merged_stats.nactive;
+}
+
+static inline size_t
+psset_ndirty(psset_t *psset) {
+	return psset->merged_stats.ndirty;
+}
+
+#endif /* JEMALLOC_INTERNAL_PSSET_H */
diff --git a/deps/jemalloc/include/jemalloc/internal/public_namespace.sh b/deps/jemalloc/include/jemalloc/internal/public_namespace.sh
new file mode 100755
index 0000000..4d415ba
--- /dev/null
+++ b/deps/jemalloc/include/jemalloc/internal/public_namespace.sh
@@ -0,0 +1,6 @@
+#!/bin/sh
+
+for nm in `cat $1` ; do
+  n=`echo ${nm} |tr ':' ' ' |awk '{print $1}'`
+  echo "#define je_${n} JEMALLOC_N(${n})"
+done
diff --git a/deps/jemalloc/include/jemalloc/internal/public_unnamespace.sh b/deps/jemalloc/include/jemalloc/internal/public_unnamespace.sh
new file mode 100755
index 0000000..4239d17
--- /dev/null
+++ b/deps/jemalloc/include/jemalloc/internal/public_unnamespace.sh
@@ -0,0 +1,6 @@
+#!/bin/sh
+
+for nm in `cat $1` ; do
+  n=`echo ${nm} |tr ':' ' ' |awk '{print $1}'`
+  echo "#undef je_${n}"
+done
diff --git a/deps/jemalloc/include/jemalloc/internal/ql.h b/deps/jemalloc/include/jemalloc/internal/ql.h
new file mode 100644
index 0000000..c7f52f8
--- /dev/null
+++ b/deps/jemalloc/include/jemalloc/internal/ql.h
@@ -0,0 +1,197 @@
+#ifndef JEMALLOC_INTERNAL_QL_H
+#define JEMALLOC_INTERNAL_QL_H
+
+#include "jemalloc/internal/qr.h"
+
+/*
+ * A linked-list implementation.
+ *
+ * This is built on top of the ring implementation, but that can be viewed as an
+ * implementation detail (i.e. trying to advance past the tail of the list
+ * doesn't wrap around).
+ *
+ * You define a struct like so:
+ * typedef strucy my_s my_t;
+ * struct my_s {
+ *   int data;
+ *   ql_elm(my_t) my_link;
+ * };
+ *
+ * // We wobble between "list" and "head" for this type; we're now mostly
+ * // heading towards "list".
+ * typedef ql_head(my_t) my_list_t;
+ *
+ * You then pass a my_list_t * for a_head arguments, a my_t * for a_elm
+ * arguments, the token "my_link" for a_field arguments, and the token "my_t"
+ * for a_type arguments.
+ */
+
+/* List definitions. */
+#define ql_head(a_type)							\
+struct {								\
+	a_type *qlh_first;						\
+}
+
+/* Static initializer for an empty list. */
+#define ql_head_initializer(a_head) {NULL}
+
+/* The field definition. */
+#define ql_elm(a_type)	qr(a_type)
+
+/* A pointer to the first element in the list, or NULL if the list is empty. */
+#define ql_first(a_head) ((a_head)->qlh_first)
+
+/* Dynamically initializes a list. */
+#define ql_new(a_head) do {						\
+	ql_first(a_head) = NULL;					\
+} while (0)
+
+/*
+ * Sets dest to be the contents of src (overwriting any elements there), leaving
+ * src empty.
+ */
+#define ql_move(a_head_dest, a_head_src) do {				\
+	ql_first(a_head_dest) = ql_first(a_head_src);			\
+	ql_new(a_head_src);						\
+} while (0)
+
+/* True if the list is empty, otherwise false. */
+#define ql_empty(a_head) (ql_first(a_head) == NULL)
+
+/*
+ * Initializes a ql_elm.  Must be called even if the field is about to be
+ * overwritten.
+ */
+#define ql_elm_new(a_elm, a_field) qr_new((a_elm), a_field)
+
+/*
+ * Obtains the last item in the list.
+ */
+#define ql_last(a_head, a_field)					\
+	(ql_empty(a_head) ? NULL : qr_prev(ql_first(a_head), a_field))
+
+/*
+ * Gets a pointer to the next/prev element in the list.  Trying to advance past
+ * the end or retreat before the beginning of the list returns NULL.
+ */
+#define ql_next(a_head, a_elm, a_field)					\
+	((ql_last(a_head, a_field) != (a_elm))				\
+	    ? qr_next((a_elm), a_field)	: NULL)
+#define ql_prev(a_head, a_elm, a_field)					\
+	((ql_first(a_head) != (a_elm)) ? qr_prev((a_elm), a_field)	\
+				       : NULL)
+
+/* Inserts a_elm before a_qlelm in the list. */
+#define ql_before_insert(a_head, a_qlelm, a_elm, a_field) do {		\
+	qr_before_insert((a_qlelm), (a_elm), a_field);			\
+	if (ql_first(a_head) == (a_qlelm)) {				\
+		ql_first(a_head) = (a_elm);				\
+	}								\
+} while (0)
+
+/* Inserts a_elm after a_qlelm in the list. */
+#define ql_after_insert(a_qlelm, a_elm, a_field)			\
+	qr_after_insert((a_qlelm), (a_elm), a_field)
+
+/* Inserts a_elm as the first item in the list. */
+#define ql_head_insert(a_head, a_elm, a_field) do {			\
+	if (!ql_empty(a_head)) {					\
+		qr_before_insert(ql_first(a_head), (a_elm), a_field);	\
+	}								\
+	ql_first(a_head) = (a_elm);					\
+} while (0)
+
+/* Inserts a_elm as the last item in the list. */
+#define ql_tail_insert(a_head, a_elm, a_field) do {			\
+	if (!ql_empty(a_head)) {					\
+		qr_before_insert(ql_first(a_head), (a_elm), a_field);	\
+	}								\
+	ql_first(a_head) = qr_next((a_elm), a_field);			\
+} while (0)
+
+/*
+ * Given lists a = [a_1, ..., a_n] and [b_1, ..., b_n], results in:
+ * a = [a1, ..., a_n, b_1, ..., b_n] and b = [].
+ */
+#define ql_concat(a_head_a, a_head_b, a_field) do {			\
+	if (ql_empty(a_head_a)) {					\
+		ql_move(a_head_a, a_head_b);				\
+	} else if (!ql_empty(a_head_b)) {				\
+		qr_meld(ql_first(a_head_a), ql_first(a_head_b),		\
+		    a_field);						\
+		ql_new(a_head_b);					\
+	}								\
+} while (0)
+
+/* Removes a_elm from the list. */
+#define ql_remove(a_head, a_elm, a_field) do {				\
+	if (ql_first(a_head) == (a_elm)) {				\
+		ql_first(a_head) = qr_next(ql_first(a_head), a_field);	\
+	}								\
+	if (ql_first(a_head) != (a_elm)) {				\
+		qr_remove((a_elm), a_field);				\
+	} else {							\
+		ql_new(a_head);						\
+	}								\
+} while (0)
+
+/* Removes the first item in the list. */
+#define ql_head_remove(a_head, a_type, a_field) do {			\
+	a_type *t = ql_first(a_head);					\
+	ql_remove((a_head), t, a_field);				\
+} while (0)
+
+/* Removes the last item in the list. */
+#define ql_tail_remove(a_head, a_type, a_field) do {			\
+	a_type *t = ql_last(a_head, a_field);				\
+	ql_remove((a_head), t, a_field);				\
+} while (0)
+
+/*
+ * Given a = [a_1, a_2, ..., a_n-1, a_n, a_n+1, ...],
+ * ql_split(a, a_n, b, some_field) results in
+ *   a = [a_1, a_2, ..., a_n-1]
+ * and replaces b's contents with:
+ *   b = [a_n, a_n+1, ...]
+ */
+#define ql_split(a_head_a, a_elm, a_head_b, a_field) do {		\
+	if (ql_first(a_head_a) == (a_elm)) {				\
+		ql_move(a_head_b, a_head_a);				\
+	} else {							\
+		qr_split(ql_first(a_head_a), (a_elm), a_field);		\
+		ql_first(a_head_b) = (a_elm);				\
+	}								\
+} while (0)
+
+/*
+ * An optimized version of:
+ *	a_type *t = ql_first(a_head);
+ *	ql_remove((a_head), t, a_field);
+ *	ql_tail_insert((a_head), t, a_field);
+ */
+#define ql_rotate(a_head, a_field) do {					\
+	ql_first(a_head) = qr_next(ql_first(a_head), a_field);		\
+} while (0)
+
+/*
+ * Helper macro to iterate over each element in a list in order, starting from
+ * the head (or in reverse order, starting from the tail).  The usage is
+ * (assuming my_t and my_list_t defined as above).
+ *
+ * int sum(my_list_t *list) {
+ *   int sum = 0;
+ *   my_t *iter;
+ *   ql_foreach(iter, list, link) {
+ *     sum += iter->data;
+ *   }
+ *   return sum;
+ * }
+ */
+
+#define ql_foreach(a_var, a_head, a_field)				\
+	qr_foreach((a_var), ql_first(a_head), a_field)
+
+#define ql_reverse_foreach(a_var, a_head, a_field)			\
+	qr_reverse_foreach((a_var), ql_first(a_head), a_field)
+
+#endif /* JEMALLOC_INTERNAL_QL_H */
diff --git a/deps/jemalloc/include/jemalloc/internal/qr.h b/deps/jemalloc/include/jemalloc/internal/qr.h
new file mode 100644
index 0000000..ece4f55
--- /dev/null
+++ b/deps/jemalloc/include/jemalloc/internal/qr.h
@@ -0,0 +1,140 @@
+#ifndef JEMALLOC_INTERNAL_QR_H
+#define JEMALLOC_INTERNAL_QR_H
+
+/*
+ * A ring implementation based on an embedded circular doubly-linked list.
+ *
+ * You define your struct like so:
+ *
+ * typedef struct my_s my_t;
+ * struct my_s {
+ *   int data;
+ *   qr(my_t) my_link;
+ * };
+ *
+ * And then pass a my_t * into macros for a_qr arguments, and the token
+ * "my_link" into a_field fields.
+ */
+
+/* Ring definitions. */
+#define qr(a_type)							\
+struct {								\
+	a_type	*qre_next;						\
+	a_type	*qre_prev;						\
+}
+
+/*
+ * Initialize a qr link.  Every link must be initialized before being used, even
+ * if that initialization is going to be immediately overwritten (say, by being
+ * passed into an insertion macro).
+ */
+#define qr_new(a_qr, a_field) do {					\
+	(a_qr)->a_field.qre_next = (a_qr);				\
+	(a_qr)->a_field.qre_prev = (a_qr);				\
+} while (0)
+
+/*
+ * Go forwards or backwards in the ring.  Note that (the ring being circular), this
+ * always succeeds -- you just keep looping around and around the ring if you
+ * chase pointers without end.
+ */
+#define qr_next(a_qr, a_field) ((a_qr)->a_field.qre_next)
+#define qr_prev(a_qr, a_field) ((a_qr)->a_field.qre_prev)
+
+/*
+ * Given two rings:
+ *    a -> a_1 -> ... -> a_n --
+ *    ^                       |
+ *    |------------------------
+ *
+ *    b -> b_1 -> ... -> b_n --
+ *    ^                       |
+ *    |------------------------
+ *
+ * Results in the ring:
+ *   a -> a_1 -> ... -> a_n -> b -> b_1 -> ... -> b_n --
+ *   ^                                                 |
+ *   |-------------------------------------------------|
+ *
+ * a_qr_a can directly be a qr_next() macro, but a_qr_b cannot.
+ */
+#define qr_meld(a_qr_a, a_qr_b, a_field) do {				\
+	(a_qr_b)->a_field.qre_prev->a_field.qre_next =			\
+	    (a_qr_a)->a_field.qre_prev;					\
+	(a_qr_a)->a_field.qre_prev = (a_qr_b)->a_field.qre_prev;	\
+	(a_qr_b)->a_field.qre_prev =					\
+	    (a_qr_b)->a_field.qre_prev->a_field.qre_next;		\
+	(a_qr_a)->a_field.qre_prev->a_field.qre_next = (a_qr_a);	\
+	(a_qr_b)->a_field.qre_prev->a_field.qre_next = (a_qr_b);	\
+} while (0)
+
+/*
+ * Logically, this is just a meld.  The intent, though, is that a_qrelm is a
+ * single-element ring, so that "before" has a more obvious interpretation than
+ * meld.
+ */
+#define qr_before_insert(a_qrelm, a_qr, a_field)			\
+	qr_meld((a_qrelm), (a_qr), a_field)
+
+/* Ditto, but inserting after rather than before. */
+#define qr_after_insert(a_qrelm, a_qr, a_field)				\
+	qr_before_insert(qr_next(a_qrelm, a_field), (a_qr), a_field)
+
+/*
+ * Inverts meld; given the ring:
+ *   a -> a_1 -> ... -> a_n -> b -> b_1 -> ... -> b_n --
+ *   ^                                                 |
+ *   |-------------------------------------------------|
+ *
+ * Results in two rings:
+ *    a -> a_1 -> ... -> a_n --
+ *    ^                       |
+ *    |------------------------
+ *
+ *    b -> b_1 -> ... -> b_n --
+ *    ^                       |
+ *    |------------------------
+ *
+ * qr_meld() and qr_split() are functionally equivalent, so there's no need to
+ * have two copies of the code.
+ */
+#define qr_split(a_qr_a, a_qr_b, a_field)				\
+	qr_meld((a_qr_a), (a_qr_b), a_field)
+
+/*
+ * Splits off a_qr from the rest of its ring, so that it becomes a
+ * single-element ring.
+ */
+#define qr_remove(a_qr, a_field)					\
+	qr_split(qr_next(a_qr, a_field), (a_qr), a_field)
+
+/*
+ * Helper macro to iterate over each element in a ring exactly once, starting
+ * with a_qr.  The usage is (assuming my_t defined as above):
+ *
+ * int sum(my_t *item) {
+ *   int sum = 0;
+ *   my_t *iter;
+ *   qr_foreach(iter, item, link) {
+ *     sum += iter->data;
+ *   }
+ *   return sum;
+ * }
+ */
+#define qr_foreach(var, a_qr, a_field)					\
+	for ((var) = (a_qr);						\
+	    (var) != NULL;						\
+	    (var) = (((var)->a_field.qre_next != (a_qr))		\
+	    ? (var)->a_field.qre_next : NULL))
+
+/*
+ * The same (and with the same usage) as qr_foreach, but in the opposite order,
+ * ending with a_qr.
+ */
+#define qr_reverse_foreach(var, a_qr, a_field)				\
+	for ((var) = ((a_qr) != NULL) ? qr_prev(a_qr, a_field) : NULL;	\
+	    (var) != NULL;						\
+	    (var) = (((var) != (a_qr))					\
+	    ? (var)->a_field.qre_prev : NULL))
+
+#endif /* JEMALLOC_INTERNAL_QR_H */
diff --git a/deps/jemalloc/include/jemalloc/internal/quantum.h b/deps/jemalloc/include/jemalloc/internal/quantum.h
new file mode 100644
index 0000000..c22d753
--- /dev/null
+++ b/deps/jemalloc/include/jemalloc/internal/quantum.h
@@ -0,0 +1,87 @@
+#ifndef JEMALLOC_INTERNAL_QUANTUM_H
+#define JEMALLOC_INTERNAL_QUANTUM_H
+
+/*
+ * Minimum allocation alignment is 2^LG_QUANTUM bytes (ignoring tiny size
+ * classes).
+ */
+#ifndef LG_QUANTUM
+#  if (defined(__i386__) || defined(_M_IX86))
+#    define LG_QUANTUM		4
+#  endif
+#  ifdef __ia64__
+#    define LG_QUANTUM		4
+#  endif
+#  ifdef __alpha__
+#    define LG_QUANTUM		4
+#  endif
+#  if (defined(__sparc64__) || defined(__sparcv9) || defined(__sparc_v9__))
+#    define LG_QUANTUM		4
+#  endif
+#  if (defined(__amd64__) || defined(__x86_64__) || defined(_M_X64))
+#    define LG_QUANTUM		4
+#  endif
+#  ifdef __arm__
+#    define LG_QUANTUM		3
+#  endif
+#  ifdef __aarch64__
+#    define LG_QUANTUM		4
+#  endif
+#  ifdef __hppa__
+#    define LG_QUANTUM		4
+#  endif
+#  ifdef __loongarch__
+#    define LG_QUANTUM		4
+#  endif
+#  ifdef __m68k__
+#    define LG_QUANTUM		3
+#  endif
+#  ifdef __mips__
+#    if defined(__mips_n32) || defined(__mips_n64)
+#      define LG_QUANTUM		4
+#    else
+#      define LG_QUANTUM		3
+#    endif
+#  endif
+#  ifdef __nios2__
+#    define LG_QUANTUM		3
+#  endif
+#  ifdef __or1k__
+#    define LG_QUANTUM		3
+#  endif
+#  ifdef __powerpc__
+#    define LG_QUANTUM		4
+#  endif
+#  if defined(__riscv) || defined(__riscv__)
+#    define LG_QUANTUM		4
+#  endif
+#  ifdef __s390__
+#    define LG_QUANTUM		4
+#  endif
+#  if (defined (__SH3E__) || defined(__SH4_SINGLE__) || defined(__SH4__) || \
+	defined(__SH4_SINGLE_ONLY__))
+#    define LG_QUANTUM		4
+#  endif
+#  ifdef __tile__
+#    define LG_QUANTUM		4
+#  endif
+#  ifdef __le32__
+#    define LG_QUANTUM		4
+#  endif
+#  ifdef __arc__
+#    define LG_QUANTUM		3
+#  endif
+#  ifndef LG_QUANTUM
+#    error "Unknown minimum alignment for architecture; specify via "
+	 "--with-lg-quantum"
+#  endif
+#endif
+
+#define QUANTUM			((size_t)(1U << LG_QUANTUM))
+#define QUANTUM_MASK		(QUANTUM - 1)
+
+/* Return the smallest quantum multiple that is >= a. */
+#define QUANTUM_CEILING(a)						\
+	(((a) + QUANTUM_MASK) & ~QUANTUM_MASK)
+
+#endif /* JEMALLOC_INTERNAL_QUANTUM_H */
diff --git a/deps/jemalloc/include/jemalloc/internal/rb.h b/deps/jemalloc/include/jemalloc/internal/rb.h
new file mode 100644
index 0000000..a9a51cb
--- /dev/null
+++ b/deps/jemalloc/include/jemalloc/internal/rb.h
@@ -0,0 +1,1856 @@
+#ifndef JEMALLOC_INTERNAL_RB_H
+#define JEMALLOC_INTERNAL_RB_H
+
+/*-
+ *******************************************************************************
+ *
+ * cpp macro implementation of left-leaning 2-3 red-black trees.  Parent
+ * pointers are not used, and color bits are stored in the least significant
+ * bit of right-child pointers (if RB_COMPACT is defined), thus making node
+ * linkage as compact as is possible for red-black trees.
+ *
+ * Usage:
+ *
+ *   #include <stdint.h>
+ *   #include <stdbool.h>
+ *   #define NDEBUG // (Optional, see assert(3).)
+ *   #include <assert.h>
+ *   #define RB_COMPACT // (Optional, embed color bits in right-child pointers.)
+ *   #include <rb.h>
+ *   ...
+ *
+ *******************************************************************************
+ */
+
+#ifndef __PGI
+#define RB_COMPACT
+#endif
+
+/*
+ * Each node in the RB tree consumes at least 1 byte of space (for the linkage
+ * if nothing else, so there are a maximum of sizeof(void *) << 3 rb tree nodes
+ * in any process (and thus, at most sizeof(void *) << 3 nodes in any rb tree).
+ * The choice of algorithm bounds the depth of a tree to twice the binary log of
+ * the number of elements in the tree; the following bound follows.
+ */
+#define RB_MAX_DEPTH (sizeof(void *) << 4)
+
+#ifdef RB_COMPACT
+/* Node structure. */
+#define rb_node(a_type)							\
+struct {								\
+    a_type *rbn_left;							\
+    a_type *rbn_right_red;						\
+}
+#else
+#define rb_node(a_type)							\
+struct {								\
+    a_type *rbn_left;							\
+    a_type *rbn_right;							\
+    bool rbn_red;							\
+}
+#endif
+
+/* Root structure. */
+#define rb_tree(a_type)							\
+struct {								\
+    a_type *rbt_root;							\
+}
+
+/* Left accessors. */
+#define rbtn_left_get(a_type, a_field, a_node)				\
+    ((a_node)->a_field.rbn_left)
+#define rbtn_left_set(a_type, a_field, a_node, a_left) do {		\
+    (a_node)->a_field.rbn_left = a_left;				\
+} while (0)
+
+#ifdef RB_COMPACT
+/* Right accessors. */
+#define rbtn_right_get(a_type, a_field, a_node)				\
+    ((a_type *) (((intptr_t) (a_node)->a_field.rbn_right_red)		\
+      & ((ssize_t)-2)))
+#define rbtn_right_set(a_type, a_field, a_node, a_right) do {		\
+    (a_node)->a_field.rbn_right_red = (a_type *) (((uintptr_t) a_right)	\
+      | (((uintptr_t) (a_node)->a_field.rbn_right_red) & ((size_t)1)));	\
+} while (0)
+
+/* Color accessors. */
+#define rbtn_red_get(a_type, a_field, a_node)				\
+    ((bool) (((uintptr_t) (a_node)->a_field.rbn_right_red)		\
+      & ((size_t)1)))
+#define rbtn_color_set(a_type, a_field, a_node, a_red) do {		\
+    (a_node)->a_field.rbn_right_red = (a_type *) ((((intptr_t)		\
+      (a_node)->a_field.rbn_right_red) & ((ssize_t)-2))			\
+      | ((ssize_t)a_red));						\
+} while (0)
+#define rbtn_red_set(a_type, a_field, a_node) do {			\
+    (a_node)->a_field.rbn_right_red = (a_type *) (((uintptr_t)		\
+      (a_node)->a_field.rbn_right_red) | ((size_t)1));			\
+} while (0)
+#define rbtn_black_set(a_type, a_field, a_node) do {			\
+    (a_node)->a_field.rbn_right_red = (a_type *) (((intptr_t)		\
+      (a_node)->a_field.rbn_right_red) & ((ssize_t)-2));		\
+} while (0)
+
+/* Node initializer. */
+#define rbt_node_new(a_type, a_field, a_rbt, a_node) do {		\
+    /* Bookkeeping bit cannot be used by node pointer. */		\
+    assert(((uintptr_t)(a_node) & 0x1) == 0);				\
+    rbtn_left_set(a_type, a_field, (a_node), NULL);	\
+    rbtn_right_set(a_type, a_field, (a_node), NULL);	\
+    rbtn_red_set(a_type, a_field, (a_node));				\
+} while (0)
+#else
+/* Right accessors. */
+#define rbtn_right_get(a_type, a_field, a_node)				\
+    ((a_node)->a_field.rbn_right)
+#define rbtn_right_set(a_type, a_field, a_node, a_right) do {		\
+    (a_node)->a_field.rbn_right = a_right;				\
+} while (0)
+
+/* Color accessors. */
+#define rbtn_red_get(a_type, a_field, a_node)				\
+    ((a_node)->a_field.rbn_red)
+#define rbtn_color_set(a_type, a_field, a_node, a_red) do {		\
+    (a_node)->a_field.rbn_red = (a_red);				\
+} while (0)
+#define rbtn_red_set(a_type, a_field, a_node) do {			\
+    (a_node)->a_field.rbn_red = true;					\
+} while (0)
+#define rbtn_black_set(a_type, a_field, a_node) do {			\
+    (a_node)->a_field.rbn_red = false;					\
+} while (0)
+
+/* Node initializer. */
+#define rbt_node_new(a_type, a_field, a_rbt, a_node) do {		\
+    rbtn_left_set(a_type, a_field, (a_node), NULL);	\
+    rbtn_right_set(a_type, a_field, (a_node), NULL);	\
+    rbtn_red_set(a_type, a_field, (a_node));				\
+} while (0)
+#endif
+
+/* Tree initializer. */
+#define rb_new(a_type, a_field, a_rbt) do {				\
+    (a_rbt)->rbt_root = NULL;						\
+} while (0)
+
+/* Internal utility macros. */
+#define rbtn_first(a_type, a_field, a_rbt, a_root, r_node) do {		\
+    (r_node) = (a_root);						\
+    if ((r_node) != NULL) {						\
+	for (;								\
+	  rbtn_left_get(a_type, a_field, (r_node)) != NULL;		\
+	  (r_node) = rbtn_left_get(a_type, a_field, (r_node))) {	\
+	}								\
+    }									\
+} while (0)
+
+#define rbtn_last(a_type, a_field, a_rbt, a_root, r_node) do {		\
+    (r_node) = (a_root);						\
+    if ((r_node) != NULL) {						\
+	for (; rbtn_right_get(a_type, a_field, (r_node)) != NULL;	\
+	  (r_node) = rbtn_right_get(a_type, a_field, (r_node))) {	\
+	}								\
+    }									\
+} while (0)
+
+#define rbtn_rotate_left(a_type, a_field, a_node, r_node) do {		\
+    (r_node) = rbtn_right_get(a_type, a_field, (a_node));		\
+    rbtn_right_set(a_type, a_field, (a_node),				\
+      rbtn_left_get(a_type, a_field, (r_node)));			\
+    rbtn_left_set(a_type, a_field, (r_node), (a_node));			\
+} while (0)
+
+#define rbtn_rotate_right(a_type, a_field, a_node, r_node) do {		\
+    (r_node) = rbtn_left_get(a_type, a_field, (a_node));		\
+    rbtn_left_set(a_type, a_field, (a_node),				\
+      rbtn_right_get(a_type, a_field, (r_node)));			\
+    rbtn_right_set(a_type, a_field, (r_node), (a_node));		\
+} while (0)
+
+#define rb_summarized_only_false(...)
+#define rb_summarized_only_true(...) __VA_ARGS__
+#define rb_empty_summarize(a_node, a_lchild, a_rchild) false
+
+/*
+ * The rb_proto() and rb_summarized_proto() macros generate function prototypes
+ * that correspond to the functions generated by an equivalently parameterized
+ * call to rb_gen() or rb_summarized_gen(), respectively.
+ */
+
+#define rb_proto(a_attr, a_prefix, a_rbt_type, a_type)			\
+    rb_proto_impl(a_attr, a_prefix, a_rbt_type, a_type, false)
+#define rb_summarized_proto(a_attr, a_prefix, a_rbt_type, a_type)	\
+    rb_proto_impl(a_attr, a_prefix, a_rbt_type, a_type, true)
+#define rb_proto_impl(a_attr, a_prefix, a_rbt_type, a_type,		\
+    a_is_summarized)							\
+a_attr void								\
+a_prefix##new(a_rbt_type *rbtree);					\
+a_attr bool								\
+a_prefix##empty(a_rbt_type *rbtree);					\
+a_attr a_type *								\
+a_prefix##first(a_rbt_type *rbtree);					\
+a_attr a_type *								\
+a_prefix##last(a_rbt_type *rbtree);					\
+a_attr a_type *								\
+a_prefix##next(a_rbt_type *rbtree, a_type *node);			\
+a_attr a_type *								\
+a_prefix##prev(a_rbt_type *rbtree, a_type *node);			\
+a_attr a_type *								\
+a_prefix##search(a_rbt_type *rbtree, const a_type *key);		\
+a_attr a_type *								\
+a_prefix##nsearch(a_rbt_type *rbtree, const a_type *key);		\
+a_attr a_type *								\
+a_prefix##psearch(a_rbt_type *rbtree, const a_type *key);		\
+a_attr void								\
+a_prefix##insert(a_rbt_type *rbtree, a_type *node);			\
+a_attr void								\
+a_prefix##remove(a_rbt_type *rbtree, a_type *node);			\
+a_attr a_type *								\
+a_prefix##iter(a_rbt_type *rbtree, a_type *start, a_type *(*cb)(	\
+  a_rbt_type *, a_type *, void *), void *arg);				\
+a_attr a_type *								\
+a_prefix##reverse_iter(a_rbt_type *rbtree, a_type *start,		\
+  a_type *(*cb)(a_rbt_type *, a_type *, void *), void *arg);		\
+a_attr void								\
+a_prefix##destroy(a_rbt_type *rbtree, void (*cb)(a_type *, void *),	\
+  void *arg);								\
+/* Extended API */							\
+rb_summarized_only_##a_is_summarized(					\
+a_attr void								\
+a_prefix##update_summaries(a_rbt_type *rbtree, a_type *node);		\
+a_attr bool								\
+a_prefix##empty_filtered(a_rbt_type *rbtree,				\
+    bool (*filter_node)(void *, a_type *),				\
+    bool (*filter_subtree)(void *, a_type *),				\
+    void *filter_ctx);							\
+a_attr a_type *								\
+a_prefix##first_filtered(a_rbt_type *rbtree,				\
+    bool (*filter_node)(void *, a_type *),				\
+    bool (*filter_subtree)(void *, a_type *),				\
+    void *filter_ctx);							\
+a_attr a_type *								\
+a_prefix##last_filtered(a_rbt_type *rbtree,				\
+    bool (*filter_node)(void *, a_type *),				\
+    bool (*filter_subtree)(void *, a_type *),				\
+    void *filter_ctx);							\
+a_attr a_type *								\
+a_prefix##next_filtered(a_rbt_type *rbtree, a_type *node,		\
+    bool (*filter_node)(void *, a_type *),				\
+    bool (*filter_subtree)(void *, a_type *),				\
+    void *filter_ctx);							\
+a_attr a_type *								\
+a_prefix##prev_filtered(a_rbt_type *rbtree, a_type *node,		\
+    bool (*filter_node)(void *, a_type *),				\
+    bool (*filter_subtree)(void *, a_type *),				\
+    void *filter_ctx);							\
+a_attr a_type *								\
+a_prefix##search_filtered(a_rbt_type *rbtree, const a_type *key,	\
+    bool (*filter_node)(void *, a_type *),				\
+    bool (*filter_subtree)(void *, a_type *),				\
+    void *filter_ctx);							\
+a_attr a_type *								\
+a_prefix##nsearch_filtered(a_rbt_type *rbtree, const a_type *key,	\
+    bool (*filter_node)(void *, a_type *),				\
+    bool (*filter_subtree)(void *, a_type *),				\
+    void *filter_ctx);							\
+a_attr a_type *								\
+a_prefix##psearch_filtered(a_rbt_type *rbtree, const a_type *key,	\
+    bool (*filter_node)(void *, a_type *),				\
+    bool (*filter_subtree)(void *, a_type *),				\
+    void *filter_ctx);							\
+a_attr a_type *								\
+a_prefix##iter_filtered(a_rbt_type *rbtree, a_type *start,		\
+    a_type *(*cb)(a_rbt_type *, a_type *, void *), void *arg,		\
+    bool (*filter_node)(void *, a_type *),				\
+    bool (*filter_subtree)(void *, a_type *),				\
+    void *filter_ctx);							\
+a_attr a_type *								\
+a_prefix##reverse_iter_filtered(a_rbt_type *rbtree, a_type *start,	\
+  a_type *(*cb)(a_rbt_type *, a_type *, void *), void *arg,		\
+    bool (*filter_node)(void *, a_type *),				\
+    bool (*filter_subtree)(void *, a_type *),				\
+    void *filter_ctx);							\
+)
+
+/*
+ * The rb_gen() macro generates a type-specific red-black tree implementation,
+ * based on the above cpp macros.
+ * Arguments:
+ *
+ *   a_attr:
+ *     Function attribute for generated functions (ex: static).
+ *   a_prefix:
+ *     Prefix for generated functions (ex: ex_).
+ *   a_rb_type:
+ *     Type for red-black tree data structure (ex: ex_t).
+ *   a_type:
+ *     Type for red-black tree node data structure (ex: ex_node_t).
+ *   a_field:
+ *     Name of red-black tree node linkage (ex: ex_link).
+ *   a_cmp:
+ *     Node comparison function name, with the following prototype:
+ *
+ *     int a_cmp(a_type *a_node, a_type *a_other);
+ *                        ^^^^^^
+ *                        or a_key
+ *     Interpretation of comparison function return values:
+ *       -1 : a_node <  a_other
+ *        0 : a_node == a_other
+ *        1 : a_node >  a_other
+ *     In all cases, the a_node or a_key macro argument is the first argument to
+ *     the comparison function, which makes it possible to write comparison
+ *     functions that treat the first argument specially.  a_cmp must be a total
+ *     order on values inserted into the tree -- duplicates are not allowed.
+ *
+ * Assuming the following setup:
+ *
+ *   typedef struct ex_node_s ex_node_t;
+ *   struct ex_node_s {
+ *       rb_node(ex_node_t) ex_link;
+ *   };
+ *   typedef rb_tree(ex_node_t) ex_t;
+ *   rb_gen(static, ex_, ex_t, ex_node_t, ex_link, ex_cmp)
+ *
+ * The following API is generated:
+ *
+ *   static void
+ *   ex_new(ex_t *tree);
+ *       Description: Initialize a red-black tree structure.
+ *       Args:
+ *         tree: Pointer to an uninitialized red-black tree object.
+ *
+ *   static bool
+ *   ex_empty(ex_t *tree);
+ *       Description: Determine whether tree is empty.
+ *       Args:
+ *         tree: Pointer to an initialized red-black tree object.
+ *       Ret: True if tree is empty, false otherwise.
+ *
+ *   static ex_node_t *
+ *   ex_first(ex_t *tree);
+ *   static ex_node_t *
+ *   ex_last(ex_t *tree);
+ *       Description: Get the first/last node in tree.
+ *       Args:
+ *         tree: Pointer to an initialized red-black tree object.
+ *       Ret: First/last node in tree, or NULL if tree is empty.
+ *
+ *   static ex_node_t *
+ *   ex_next(ex_t *tree, ex_node_t *node);
+ *   static ex_node_t *
+ *   ex_prev(ex_t *tree, ex_node_t *node);
+ *       Description: Get node's successor/predecessor.
+ *       Args:
+ *         tree: Pointer to an initialized red-black tree object.
+ *         node: A node in tree.
+ *       Ret: node's successor/predecessor in tree, or NULL if node is
+ *            last/first.
+ *
+ *   static ex_node_t *
+ *   ex_search(ex_t *tree, const ex_node_t *key);
+ *       Description: Search for node that matches key.
+ *       Args:
+ *         tree: Pointer to an initialized red-black tree object.
+ *         key : Search key.
+ *       Ret: Node in tree that matches key, or NULL if no match.
+ *
+ *   static ex_node_t *
+ *   ex_nsearch(ex_t *tree, const ex_node_t *key);
+ *   static ex_node_t *
+ *   ex_psearch(ex_t *tree, const ex_node_t *key);
+ *       Description: Search for node that matches key.  If no match is found,
+ *                    return what would be key's successor/predecessor, were
+ *                    key in tree.
+ *       Args:
+ *         tree: Pointer to an initialized red-black tree object.
+ *         key : Search key.
+ *       Ret: Node in tree that matches key, or if no match, hypothetical node's
+ *            successor/predecessor (NULL if no successor/predecessor).
+ *
+ *   static void
+ *   ex_insert(ex_t *tree, ex_node_t *node);
+ *       Description: Insert node into tree.
+ *       Args:
+ *         tree: Pointer to an initialized red-black tree object.
+ *         node: Node to be inserted into tree.
+ *
+ *   static void
+ *   ex_remove(ex_t *tree, ex_node_t *node);
+ *       Description: Remove node from tree.
+ *       Args:
+ *         tree: Pointer to an initialized red-black tree object.
+ *         node: Node in tree to be removed.
+ *
+ *   static ex_node_t *
+ *   ex_iter(ex_t *tree, ex_node_t *start, ex_node_t *(*cb)(ex_t *,
+ *     ex_node_t *, void *), void *arg);
+ *   static ex_node_t *
+ *   ex_reverse_iter(ex_t *tree, ex_node_t *start, ex_node *(*cb)(ex_t *,
+ *     ex_node_t *, void *), void *arg);
+ *       Description: Iterate forward/backward over tree, starting at node.  If
+ *                    tree is modified, iteration must be immediately
+ *                    terminated by the callback function that causes the
+ *                    modification.
+ *       Args:
+ *         tree : Pointer to an initialized red-black tree object.
+ *         start: Node at which to start iteration, or NULL to start at
+ *                first/last node.
+ *         cb   : Callback function, which is called for each node during
+ *                iteration.  Under normal circumstances the callback function
+ *                should return NULL, which causes iteration to continue.  If a
+ *                callback function returns non-NULL, iteration is immediately
+ *                terminated and the non-NULL return value is returned by the
+ *                iterator.  This is useful for re-starting iteration after
+ *                modifying tree.
+ *         arg  : Opaque pointer passed to cb().
+ *       Ret: NULL if iteration completed, or the non-NULL callback return value
+ *            that caused termination of the iteration.
+ *
+ *   static void
+ *   ex_destroy(ex_t *tree, void (*cb)(ex_node_t *, void *), void *arg);
+ *       Description: Iterate over the tree with post-order traversal, remove
+ *                    each node, and run the callback if non-null.  This is
+ *                    used for destroying a tree without paying the cost to
+ *                    rebalance it.  The tree must not be otherwise altered
+ *                    during traversal.
+ *       Args:
+ *         tree: Pointer to an initialized red-black tree object.
+ *         cb  : Callback function, which, if non-null, is called for each node
+ *               during iteration.  There is no way to stop iteration once it
+ *               has begun.
+ *         arg : Opaque pointer passed to cb().
+ *
+ * The rb_summarized_gen() macro generates all the functions above, but has an
+ * expanded interface.  In introduces the notion of summarizing subtrees, and of
+ * filtering searches in the tree according to the information contained in
+ * those summaries.
+ * The extra macro argument is:
+ *   a_summarize:
+ *     Tree summarization function name, with the following prototype:
+ *
+ *     bool a_summarize(a_type *a_node, const a_type *a_left_child,
+ *         const a_type *a_right_child);
+ *
+ *     This function should update a_node with the summary of the subtree rooted
+ *     there, using the data contained in it and the summaries in a_left_child
+ *     and a_right_child.  One or both of them may be NULL.  When the tree
+ *     changes due to an insertion or removal, it updates the summaries of all
+ *     nodes whose subtrees have changed (always updating the summaries of
+ *     children before their parents).  If the user alters a node in the tree in
+ *     a way that may change its summary, they can call the generated
+ *     update_summaries function to bubble up the summary changes to the root.
+ *     It should return true if the summary changed (or may have changed), and
+ *     false if it didn't (which will allow the implementation to terminate
+ *     "bubbling up" the summaries early).
+ *     As the parameter names indicate, the children are ordered as they are in
+ *     the tree, a_left_child, if it is not NULL, compares less than a_node,
+ *     which in turn compares less than a_right_child (if a_right_child is not
+ *     NULL).
+ *
+ * Using the same setup as above but replacing the macro with
+ *   rb_summarized_gen(static, ex_, ex_t, ex_node_t, ex_link, ex_cmp,
+ *       ex_summarize)
+ *
+ * Generates all the previous functions, but adds some more:
+ *
+ *   static void
+ *   ex_update_summaries(ex_t *tree, ex_node_t *node);
+ *       Description: Recompute all summaries of ancestors of node.
+ *       Args:
+ *         tree: Pointer to an initialized red-black tree object.
+ *         node: The element of the tree whose summary may have changed.
+ *
+ * For each of ex_empty, ex_first, ex_last, ex_next, ex_prev, ex_search,
+ * ex_nsearch, ex_psearch, ex_iter, and ex_reverse_iter, an additional function
+ * is generated as well, with the suffix _filtered (e.g. ex_empty_filtered,
+ * ex_first_filtered, etc.).  These use the concept of a "filter"; a binary
+ * property some node either satisfies or does not satisfy.  Clever use of the
+ * a_summary argument to rb_summarized_gen can allow efficient computation of
+ * these predicates across whole subtrees of the tree.
+ * The extended API functions accept three additional arguments after the
+ * arguments to the corresponding non-extended equivalent.
+ *
+ * ex_fn(..., bool (*filter_node)(void *, ex_node_t *),
+ *     bool (*filter_subtree)(void *, ex_node_t *), void *filter_ctx);
+ *         filter_node    : Returns true if the node passes the filter.
+ *         filter_subtree : Returns true if some node in the subtree rooted at
+ *                          node passes the filter.
+ *         filter_ctx     : A context argument passed to the filters.
+ *
+ * For a more concrete example of summarizing and filtering, suppose we're using
+ * the red-black tree to track a set of integers:
+ *
+ * struct ex_node_s {
+ *     rb_node(ex_node_t) ex_link;
+ *     unsigned data;
+ * };
+ *
+ * Suppose, for some application-specific reason, we want to be able to quickly
+ * find numbers in the set which are divisible by large powers of 2 (say, for
+ * aligned allocation purposes).  We augment the node with a summary field:
+ *
+ * struct ex_node_s {
+ *     rb_node(ex_node_t) ex_link;
+ *     unsigned data;
+ *     unsigned max_subtree_ffs;
+ * }
+ *
+ * and define our summarization function as follows:
+ *
+ * bool
+ * ex_summarize(ex_node_t *node, const ex_node_t *lchild,
+ *   const ex_node_t *rchild) {
+ *     unsigned new_max_subtree_ffs = ffs(node->data);
+ *     if (lchild != NULL && lchild->max_subtree_ffs > new_max_subtree_ffs) {
+ *         new_max_subtree_ffs = lchild->max_subtree_ffs;
+ *     }
+ *     if (rchild != NULL && rchild->max_subtree_ffs > new_max_subtree_ffs) {
+ *         new_max_subtree_ffs = rchild->max_subtree_ffs;
+ *     }
+ *     bool changed = (node->max_subtree_ffs != new_max_subtree_ffs)
+ *     node->max_subtree_ffs = new_max_subtree_ffs;
+ *     // This could be "return true" without any correctness or big-O
+ *     // performance changes; but practically, precisely reporting summary
+ *     // changes reduces the amount of work that has to be done when "bubbling
+ *     // up" summary changes.
+ *     return changed;
+ * }
+ *
+ * We can now implement our filter functions as follows:
+ * bool
+ * ex_filter_node(void *filter_ctx, ex_node_t *node) {
+ *     unsigned required_ffs = *(unsigned *)filter_ctx;
+ *     return ffs(node->data) >= required_ffs;
+ * }
+ * bool
+ * ex_filter_subtree(void *filter_ctx, ex_node_t *node) {
+ *     unsigned required_ffs = *(unsigned *)filter_ctx;
+ *     return node->max_subtree_ffs >= required_ffs;
+ * }
+ *
+ * We can now easily search for, e.g., the smallest integer in the set that's
+ * divisible by 128:
+ * ex_node_t *
+ * find_div_128(ex_tree_t *tree) {
+ *     unsigned min_ffs = 7;
+ *     return ex_first_filtered(tree, &ex_filter_node, &ex_filter_subtree,
+ *         &min_ffs);
+ * }
+ *
+ * We could with similar ease:
+ * - Fnd the next multiple of 128 in the set that's larger than 12345 (with
+ *   ex_nsearch_filtered)
+ * - Iterate over just those multiples of 64 that are in the set (with
+ *   ex_iter_filtered)
+ * - Determine if the set contains any multiples of 1024 (with
+ *   ex_empty_filtered).
+ *
+ * Some possibly subtle API notes:
+ * - The node argument to ex_next_filtered and ex_prev_filtered need not pass
+ *   the filter; it will find the next/prev node that passes the filter.
+ * - ex_search_filtered will fail even for a node in the tree, if that node does
+ *   not pass the filter.  ex_psearch_filtered and ex_nsearch_filtered behave
+ *   similarly; they may return a node larger/smaller than the key, even if a
+ *   node equivalent to the key is in the tree (but does not pass the filter).
+ * - Similarly, if the start argument to a filtered iteration function does not
+ *   pass the filter, the callback won't be invoked on it.
+ *
+ * These should make sense after a moment's reflection; each post-condition is
+ * the same as with the unfiltered version, with the added constraint that the
+ * returned node must pass the filter.
+ */
+#define rb_gen(a_attr, a_prefix, a_rbt_type, a_type, a_field, a_cmp)	\
+    rb_gen_impl(a_attr, a_prefix, a_rbt_type, a_type, a_field, a_cmp,	\
+	rb_empty_summarize, false)
+#define rb_summarized_gen(a_attr, a_prefix, a_rbt_type, a_type,		\
+    a_field, a_cmp, a_summarize)					\
+    rb_gen_impl(a_attr, a_prefix, a_rbt_type, a_type, a_field, a_cmp,	\
+	a_summarize, true)
+
+#define rb_gen_impl(a_attr, a_prefix, a_rbt_type, a_type,		\
+    a_field, a_cmp, a_summarize, a_is_summarized)			\
+typedef struct {							\
+    a_type *node;							\
+    int cmp;								\
+} a_prefix##path_entry_t;						\
+static inline void							\
+a_prefix##summarize_range(a_prefix##path_entry_t *rfirst,		\
+    a_prefix##path_entry_t *rlast) {					\
+    while ((uintptr_t)rlast >= (uintptr_t)rfirst) {			\
+	a_type *node = rlast->node;					\
+	/* Avoid a warning when a_summarize is rb_empty_summarize. */	\
+	(void)node;							\
+	bool changed = a_summarize(node, rbtn_left_get(a_type, a_field,	\
+	    node), rbtn_right_get(a_type, a_field, node));		\
+	if (!changed) {							\
+		break;							\
+	}								\
+	rlast--;							\
+    }									\
+}									\
+/* On the remove pathways, we sometimes swap the node being removed   */\
+/* and its first successor; in such cases we need to do two range     */\
+/* updates; one from the node to its (former) swapped successor, the  */\
+/* next from that successor to the root (with either allowed to       */\
+/* bail out early if appropriate.                                     */\
+static inline void							\
+a_prefix##summarize_swapped_range(a_prefix##path_entry_t *rfirst,	\
+    a_prefix##path_entry_t *rlast, a_prefix##path_entry_t *swap_loc) {	\
+	if (swap_loc == NULL || rlast <= swap_loc) {			\
+		a_prefix##summarize_range(rfirst, rlast);		\
+	} else {							\
+		a_prefix##summarize_range(swap_loc + 1, rlast);		\
+		(void)a_summarize(swap_loc->node,			\
+		    rbtn_left_get(a_type, a_field, swap_loc->node),	\
+		    rbtn_right_get(a_type, a_field, swap_loc->node));	\
+		a_prefix##summarize_range(rfirst, swap_loc - 1);	\
+	}								\
+}									\
+a_attr void								\
+a_prefix##new(a_rbt_type *rbtree) {					\
+    rb_new(a_type, a_field, rbtree);					\
+}									\
+a_attr bool								\
+a_prefix##empty(a_rbt_type *rbtree) {					\
+    return (rbtree->rbt_root == NULL);					\
+}									\
+a_attr a_type *								\
+a_prefix##first(a_rbt_type *rbtree) {					\
+    a_type *ret;							\
+    rbtn_first(a_type, a_field, rbtree, rbtree->rbt_root, ret);		\
+    return ret;								\
+}									\
+a_attr a_type *								\
+a_prefix##last(a_rbt_type *rbtree) {					\
+    a_type *ret;							\
+    rbtn_last(a_type, a_field, rbtree, rbtree->rbt_root, ret);		\
+    return ret;								\
+}									\
+a_attr a_type *								\
+a_prefix##next(a_rbt_type *rbtree, a_type *node) {			\
+    a_type *ret;							\
+    if (rbtn_right_get(a_type, a_field, node) != NULL) {		\
+	rbtn_first(a_type, a_field, rbtree, rbtn_right_get(a_type,	\
+	  a_field, node), ret);						\
+    } else {								\
+	a_type *tnode = rbtree->rbt_root;				\
+	assert(tnode != NULL);						\
+	ret = NULL;							\
+	while (true) {							\
+	    int cmp = (a_cmp)(node, tnode);				\
+	    if (cmp < 0) {						\
+		ret = tnode;						\
+		tnode = rbtn_left_get(a_type, a_field, tnode);		\
+	    } else if (cmp > 0) {					\
+		tnode = rbtn_right_get(a_type, a_field, tnode);		\
+	    } else {							\
+		break;							\
+	    }								\
+	    assert(tnode != NULL);					\
+	}								\
+    }									\
+    return ret;								\
+}									\
+a_attr a_type *								\
+a_prefix##prev(a_rbt_type *rbtree, a_type *node) {			\
+    a_type *ret;							\
+    if (rbtn_left_get(a_type, a_field, node) != NULL) {			\
+	rbtn_last(a_type, a_field, rbtree, rbtn_left_get(a_type,	\
+	  a_field, node), ret);						\
+    } else {								\
+	a_type *tnode = rbtree->rbt_root;				\
+	assert(tnode != NULL);						\
+	ret = NULL;							\
+	while (true) {							\
+	    int cmp = (a_cmp)(node, tnode);				\
+	    if (cmp < 0) {						\
+		tnode = rbtn_left_get(a_type, a_field, tnode);		\
+	    } else if (cmp > 0) {					\
+		ret = tnode;						\
+		tnode = rbtn_right_get(a_type, a_field, tnode);		\
+	    } else {							\
+		break;							\
+	    }								\
+	    assert(tnode != NULL);					\
+	}								\
+    }									\
+    return ret;								\
+}									\
+a_attr a_type *								\
+a_prefix##search(a_rbt_type *rbtree, const a_type *key) {		\
+    a_type *ret;							\
+    int cmp;								\
+    ret = rbtree->rbt_root;						\
+    while (ret != NULL							\
+      && (cmp = (a_cmp)(key, ret)) != 0) {				\
+	if (cmp < 0) {							\
+	    ret = rbtn_left_get(a_type, a_field, ret);			\
+	} else {							\
+	    ret = rbtn_right_get(a_type, a_field, ret);			\
+	}								\
+    }									\
+    return ret;								\
+}									\
+a_attr a_type *								\
+a_prefix##nsearch(a_rbt_type *rbtree, const a_type *key) {		\
+    a_type *ret;							\
+    a_type *tnode = rbtree->rbt_root;					\
+    ret = NULL;								\
+    while (tnode != NULL) {						\
+	int cmp = (a_cmp)(key, tnode);					\
+	if (cmp < 0) {							\
+	    ret = tnode;						\
+	    tnode = rbtn_left_get(a_type, a_field, tnode);		\
+	} else if (cmp > 0) {						\
+	    tnode = rbtn_right_get(a_type, a_field, tnode);		\
+	} else {							\
+	    ret = tnode;						\
+	    break;							\
+	}								\
+    }									\
+    return ret;								\
+}									\
+a_attr a_type *								\
+a_prefix##psearch(a_rbt_type *rbtree, const a_type *key) {		\
+    a_type *ret;							\
+    a_type *tnode = rbtree->rbt_root;					\
+    ret = NULL;								\
+    while (tnode != NULL) {						\
+	int cmp = (a_cmp)(key, tnode);					\
+	if (cmp < 0) {							\
+	    tnode = rbtn_left_get(a_type, a_field, tnode);		\
+	} else if (cmp > 0) {						\
+	    ret = tnode;						\
+	    tnode = rbtn_right_get(a_type, a_field, tnode);		\
+	} else {							\
+	    ret = tnode;						\
+	    break;							\
+	}								\
+    }									\
+    return ret;								\
+}									\
+a_attr void								\
+a_prefix##insert(a_rbt_type *rbtree, a_type *node) {			\
+    a_prefix##path_entry_t path[RB_MAX_DEPTH];			\
+    a_prefix##path_entry_t *pathp;					\
+    rbt_node_new(a_type, a_field, rbtree, node);			\
+    /* Wind. */								\
+    path->node = rbtree->rbt_root;					\
+    for (pathp = path; pathp->node != NULL; pathp++) {			\
+	int cmp = pathp->cmp = a_cmp(node, pathp->node);		\
+	assert(cmp != 0);						\
+	if (cmp < 0) {							\
+	    pathp[1].node = rbtn_left_get(a_type, a_field,		\
+	      pathp->node);						\
+	} else {							\
+	    pathp[1].node = rbtn_right_get(a_type, a_field,		\
+	      pathp->node);						\
+	}								\
+    }									\
+    pathp->node = node;							\
+    /* A loop invariant we maintain is that all nodes with            */\
+    /* out-of-date summaries live in path[0], path[1], ..., *pathp.   */\
+    /* To maintain this, we have to summarize node, since we          */\
+    /* decrement pathp before the first iteration.                    */\
+    assert(rbtn_left_get(a_type, a_field, node) == NULL);		\
+    assert(rbtn_right_get(a_type, a_field, node) == NULL);		\
+    (void)a_summarize(node, NULL, NULL);				\
+    /* Unwind. */							\
+    for (pathp--; (uintptr_t)pathp >= (uintptr_t)path; pathp--) {	\
+	a_type *cnode = pathp->node;					\
+	if (pathp->cmp < 0) {						\
+	    a_type *left = pathp[1].node;				\
+	    rbtn_left_set(a_type, a_field, cnode, left);		\
+	    if (rbtn_red_get(a_type, a_field, left)) {			\
+		a_type *leftleft = rbtn_left_get(a_type, a_field, left);\
+		if (leftleft != NULL && rbtn_red_get(a_type, a_field,	\
+		  leftleft)) {						\
+		    /* Fix up 4-node. */				\
+		    a_type *tnode;					\
+		    rbtn_black_set(a_type, a_field, leftleft);		\
+		    rbtn_rotate_right(a_type, a_field, cnode, tnode);	\
+		    (void)a_summarize(cnode,				\
+			rbtn_left_get(a_type, a_field, cnode),		\
+			rbtn_right_get(a_type, a_field, cnode));	\
+		    cnode = tnode;					\
+		}							\
+	    } else {							\
+		a_prefix##summarize_range(path, pathp);			\
+		return;							\
+	    }								\
+	} else {							\
+	    a_type *right = pathp[1].node;				\
+	    rbtn_right_set(a_type, a_field, cnode, right);		\
+	    if (rbtn_red_get(a_type, a_field, right)) {			\
+		a_type *left = rbtn_left_get(a_type, a_field, cnode);	\
+		if (left != NULL && rbtn_red_get(a_type, a_field,	\
+		  left)) {						\
+		    /* Split 4-node. */					\
+		    rbtn_black_set(a_type, a_field, left);		\
+		    rbtn_black_set(a_type, a_field, right);		\
+		    rbtn_red_set(a_type, a_field, cnode);		\
+		} else {						\
+		    /* Lean left. */					\
+		    a_type *tnode;					\
+		    bool tred = rbtn_red_get(a_type, a_field, cnode);	\
+		    rbtn_rotate_left(a_type, a_field, cnode, tnode);	\
+		    rbtn_color_set(a_type, a_field, tnode, tred);	\
+		    rbtn_red_set(a_type, a_field, cnode);		\
+		    (void)a_summarize(cnode,				\
+			rbtn_left_get(a_type, a_field, cnode),		\
+			rbtn_right_get(a_type, a_field, cnode));	\
+		    cnode = tnode;					\
+		}							\
+	    } else {							\
+		a_prefix##summarize_range(path, pathp);			\
+		return;							\
+	    }								\
+	}								\
+	pathp->node = cnode;						\
+	(void)a_summarize(cnode,					\
+	    rbtn_left_get(a_type, a_field, cnode),			\
+	    rbtn_right_get(a_type, a_field, cnode));			\
+    }									\
+    /* Set root, and make it black. */					\
+    rbtree->rbt_root = path->node;					\
+    rbtn_black_set(a_type, a_field, rbtree->rbt_root);			\
+}									\
+a_attr void								\
+a_prefix##remove(a_rbt_type *rbtree, a_type *node) {			\
+    a_prefix##path_entry_t path[RB_MAX_DEPTH];				\
+    a_prefix##path_entry_t *pathp;					\
+    a_prefix##path_entry_t *nodep;					\
+    a_prefix##path_entry_t *swap_loc;					\
+    /* This is a "real" sentinel -- NULL means we didn't swap the     */\
+    /* node to be pruned with one of its successors, and so           */\
+    /* summarization can terminate early whenever some summary        */\
+    /* doesn't change.                                                */\
+    swap_loc = NULL;							\
+    /* This is just to silence a compiler warning. */			\
+    nodep = NULL;							\
+    /* Wind. */								\
+    path->node = rbtree->rbt_root;					\
+    for (pathp = path; pathp->node != NULL; pathp++) {			\
+	int cmp = pathp->cmp = a_cmp(node, pathp->node);		\
+	if (cmp < 0) {							\
+	    pathp[1].node = rbtn_left_get(a_type, a_field,		\
+	      pathp->node);						\
+	} else {							\
+	    pathp[1].node = rbtn_right_get(a_type, a_field,		\
+	      pathp->node);						\
+	    if (cmp == 0) {						\
+	        /* Find node's successor, in preparation for swap. */	\
+		pathp->cmp = 1;						\
+		nodep = pathp;						\
+		for (pathp++; pathp->node != NULL; pathp++) {		\
+		    pathp->cmp = -1;					\
+		    pathp[1].node = rbtn_left_get(a_type, a_field,	\
+		      pathp->node);					\
+		}							\
+		break;							\
+	    }								\
+	}								\
+    }									\
+    assert(nodep->node == node);					\
+    pathp--;								\
+    if (pathp->node != node) {						\
+	/* Swap node with its successor. */				\
+	swap_loc = nodep;						\
+	bool tred = rbtn_red_get(a_type, a_field, pathp->node);		\
+	rbtn_color_set(a_type, a_field, pathp->node,			\
+	  rbtn_red_get(a_type, a_field, node));				\
+	rbtn_left_set(a_type, a_field, pathp->node,			\
+	  rbtn_left_get(a_type, a_field, node));			\
+	/* If node's successor is its right child, the following code */\
+	/* will do the wrong thing for the right child pointer.       */\
+	/* However, it doesn't matter, because the pointer will be    */\
+	/* properly set when the successor is pruned.                 */\
+	rbtn_right_set(a_type, a_field, pathp->node,			\
+	  rbtn_right_get(a_type, a_field, node));			\
+	rbtn_color_set(a_type, a_field, node, tred);			\
+	/* The pruned leaf node's child pointers are never accessed   */\
+	/* again, so don't bother setting them to nil.                */\
+	nodep->node = pathp->node;					\
+	pathp->node = node;						\
+	if (nodep == path) {						\
+	    rbtree->rbt_root = nodep->node;				\
+	} else {							\
+	    if (nodep[-1].cmp < 0) {					\
+		rbtn_left_set(a_type, a_field, nodep[-1].node,		\
+		  nodep->node);						\
+	    } else {							\
+		rbtn_right_set(a_type, a_field, nodep[-1].node,		\
+		  nodep->node);						\
+	    }								\
+	}								\
+    } else {								\
+	a_type *left = rbtn_left_get(a_type, a_field, node);		\
+	if (left != NULL) {						\
+	    /* node has no successor, but it has a left child.        */\
+	    /* Splice node out, without losing the left child.        */\
+	    assert(!rbtn_red_get(a_type, a_field, node));		\
+	    assert(rbtn_red_get(a_type, a_field, left));		\
+	    rbtn_black_set(a_type, a_field, left);			\
+	    if (pathp == path) {					\
+		rbtree->rbt_root = left;				\
+		/* Nothing to summarize -- the subtree rooted at the  */\
+		/* node's left child hasn't changed, and it's now the */\
+		/* root.					      */\
+	    } else {							\
+		if (pathp[-1].cmp < 0) {				\
+		    rbtn_left_set(a_type, a_field, pathp[-1].node,	\
+		      left);						\
+		} else {						\
+		    rbtn_right_set(a_type, a_field, pathp[-1].node,	\
+		      left);						\
+		}							\
+		a_prefix##summarize_swapped_range(path, &pathp[-1],	\
+		    swap_loc);						\
+	    }								\
+	    return;							\
+	} else if (pathp == path) {					\
+	    /* The tree only contained one node. */			\
+	    rbtree->rbt_root = NULL;					\
+	    return;							\
+	}								\
+    }									\
+    /* We've now established the invariant that the node has no right */\
+    /* child (well, morally; we didn't bother nulling it out if we    */\
+    /* swapped it with its successor), and that the only nodes with   */\
+    /* out-of-date summaries live in path[0], path[1], ..., pathp[-1].*/\
+    if (rbtn_red_get(a_type, a_field, pathp->node)) {			\
+	/* Prune red node, which requires no fixup. */			\
+	assert(pathp[-1].cmp < 0);					\
+	rbtn_left_set(a_type, a_field, pathp[-1].node, NULL);		\
+	a_prefix##summarize_swapped_range(path, &pathp[-1], swap_loc);	\
+	return;								\
+    }									\
+    /* The node to be pruned is black, so unwind until balance is     */\
+    /* restored.                                                      */\
+    pathp->node = NULL;							\
+    for (pathp--; (uintptr_t)pathp >= (uintptr_t)path; pathp--) {	\
+	assert(pathp->cmp != 0);					\
+	if (pathp->cmp < 0) {						\
+	    rbtn_left_set(a_type, a_field, pathp->node,			\
+	      pathp[1].node);						\
+	    if (rbtn_red_get(a_type, a_field, pathp->node)) {		\
+		a_type *right = rbtn_right_get(a_type, a_field,		\
+		  pathp->node);						\
+		a_type *rightleft = rbtn_left_get(a_type, a_field,	\
+		  right);						\
+		a_type *tnode;						\
+		if (rightleft != NULL && rbtn_red_get(a_type, a_field,	\
+		  rightleft)) {						\
+		    /* In the following diagrams, ||, //, and \\      */\
+		    /* indicate the path to the removed node.         */\
+		    /*                                                */\
+		    /*      ||                                        */\
+		    /*    pathp(r)                                    */\
+		    /*  //        \                                   */\
+		    /* (b)        (b)                                 */\
+		    /*           /                                    */\
+		    /*          (r)                                   */\
+		    /*                                                */\
+		    rbtn_black_set(a_type, a_field, pathp->node);	\
+		    rbtn_rotate_right(a_type, a_field, right, tnode);	\
+		    rbtn_right_set(a_type, a_field, pathp->node, tnode);\
+		    rbtn_rotate_left(a_type, a_field, pathp->node,	\
+		      tnode);						\
+		    (void)a_summarize(pathp->node,			\
+			rbtn_left_get(a_type, a_field, pathp->node),	\
+			rbtn_right_get(a_type, a_field, pathp->node));	\
+		    (void)a_summarize(right,				\
+			rbtn_left_get(a_type, a_field, right),		\
+			rbtn_right_get(a_type, a_field, right));	\
+		} else {						\
+		    /*      ||                                        */\
+		    /*    pathp(r)                                    */\
+		    /*  //        \                                   */\
+		    /* (b)        (b)                                 */\
+		    /*           /                                    */\
+		    /*          (b)                                   */\
+		    /*                                                */\
+		    rbtn_rotate_left(a_type, a_field, pathp->node,	\
+		      tnode);						\
+		    (void)a_summarize(pathp->node,			\
+			rbtn_left_get(a_type, a_field, pathp->node),	\
+			rbtn_right_get(a_type, a_field, pathp->node));	\
+		}							\
+		(void)a_summarize(tnode, rbtn_left_get(a_type, a_field,	\
+		    tnode), rbtn_right_get(a_type, a_field, tnode));	\
+		/* Balance restored, but rotation modified subtree    */\
+		/* root.                                              */\
+		assert((uintptr_t)pathp > (uintptr_t)path);		\
+		if (pathp[-1].cmp < 0) {				\
+		    rbtn_left_set(a_type, a_field, pathp[-1].node,	\
+		      tnode);						\
+		} else {						\
+		    rbtn_right_set(a_type, a_field, pathp[-1].node,	\
+		      tnode);						\
+		}							\
+		a_prefix##summarize_swapped_range(path, &pathp[-1],	\
+		    swap_loc);						\
+		return;							\
+	    } else {							\
+		a_type *right = rbtn_right_get(a_type, a_field,		\
+		  pathp->node);						\
+		a_type *rightleft = rbtn_left_get(a_type, a_field,	\
+		  right);						\
+		if (rightleft != NULL && rbtn_red_get(a_type, a_field,	\
+		  rightleft)) {						\
+		    /*      ||                                        */\
+		    /*    pathp(b)                                    */\
+		    /*  //        \                                   */\
+		    /* (b)        (b)                                 */\
+		    /*           /                                    */\
+		    /*          (r)                                   */\
+		    a_type *tnode;					\
+		    rbtn_black_set(a_type, a_field, rightleft);		\
+		    rbtn_rotate_right(a_type, a_field, right, tnode);	\
+		    rbtn_right_set(a_type, a_field, pathp->node, tnode);\
+		    rbtn_rotate_left(a_type, a_field, pathp->node,	\
+		      tnode);						\
+		    (void)a_summarize(pathp->node,			\
+			rbtn_left_get(a_type, a_field, pathp->node),	\
+			rbtn_right_get(a_type, a_field, pathp->node));	\
+		    (void)a_summarize(right,				\
+			rbtn_left_get(a_type, a_field, right),		\
+			rbtn_right_get(a_type, a_field, right));	\
+		    (void)a_summarize(tnode,				\
+			rbtn_left_get(a_type, a_field, tnode),		\
+			rbtn_right_get(a_type, a_field, tnode));	\
+		    /* Balance restored, but rotation modified        */\
+		    /* subtree root, which may actually be the tree   */\
+		    /* root.                                          */\
+		    if (pathp == path) {				\
+			/* Set root. */					\
+			rbtree->rbt_root = tnode;			\
+		    } else {						\
+			if (pathp[-1].cmp < 0) {			\
+			    rbtn_left_set(a_type, a_field,		\
+			      pathp[-1].node, tnode);			\
+			} else {					\
+			    rbtn_right_set(a_type, a_field,		\
+			      pathp[-1].node, tnode);			\
+			}						\
+			a_prefix##summarize_swapped_range(path,		\
+			    &pathp[-1], swap_loc);			\
+		    }							\
+		    return;						\
+		} else {						\
+		    /*      ||                                        */\
+		    /*    pathp(b)                                    */\
+		    /*  //        \                                   */\
+		    /* (b)        (b)                                 */\
+		    /*           /                                    */\
+		    /*          (b)                                   */\
+		    a_type *tnode;					\
+		    rbtn_red_set(a_type, a_field, pathp->node);		\
+		    rbtn_rotate_left(a_type, a_field, pathp->node,	\
+		      tnode);						\
+		    (void)a_summarize(pathp->node,			\
+			rbtn_left_get(a_type, a_field, pathp->node),	\
+			rbtn_right_get(a_type, a_field, pathp->node));	\
+		    (void)a_summarize(tnode,				\
+			rbtn_left_get(a_type, a_field, tnode),		\
+			rbtn_right_get(a_type, a_field, tnode));	\
+		    pathp->node = tnode;				\
+		}							\
+	    }								\
+	} else {							\
+	    a_type *left;						\
+	    rbtn_right_set(a_type, a_field, pathp->node,		\
+	      pathp[1].node);						\
+	    left = rbtn_left_get(a_type, a_field, pathp->node);		\
+	    if (rbtn_red_get(a_type, a_field, left)) {			\
+		a_type *tnode;						\
+		a_type *leftright = rbtn_right_get(a_type, a_field,	\
+		  left);						\
+		a_type *leftrightleft = rbtn_left_get(a_type, a_field,	\
+		  leftright);						\
+		if (leftrightleft != NULL && rbtn_red_get(a_type,	\
+		  a_field, leftrightleft)) {				\
+		    /*      ||                                        */\
+		    /*    pathp(b)                                    */\
+		    /*   /        \\                                  */\
+		    /* (r)        (b)                                 */\
+		    /*   \                                            */\
+		    /*   (b)                                          */\
+		    /*   /                                            */\
+		    /* (r)                                            */\
+		    a_type *unode;					\
+		    rbtn_black_set(a_type, a_field, leftrightleft);	\
+		    rbtn_rotate_right(a_type, a_field, pathp->node,	\
+		      unode);						\
+		    rbtn_rotate_right(a_type, a_field, pathp->node,	\
+		      tnode);						\
+		    rbtn_right_set(a_type, a_field, unode, tnode);	\
+		    rbtn_rotate_left(a_type, a_field, unode, tnode);	\
+		    (void)a_summarize(pathp->node,			\
+			rbtn_left_get(a_type, a_field, pathp->node),	\
+			rbtn_right_get(a_type, a_field, pathp->node));	\
+		    (void)a_summarize(unode,				\
+			rbtn_left_get(a_type, a_field, unode),		\
+			rbtn_right_get(a_type, a_field, unode));	\
+		} else {						\
+		    /*      ||                                        */\
+		    /*    pathp(b)                                    */\
+		    /*   /        \\                                  */\
+		    /* (r)        (b)                                 */\
+		    /*   \                                            */\
+		    /*   (b)                                          */\
+		    /*   /                                            */\
+		    /* (b)                                            */\
+		    assert(leftright != NULL);				\
+		    rbtn_red_set(a_type, a_field, leftright);		\
+		    rbtn_rotate_right(a_type, a_field, pathp->node,	\
+		      tnode);						\
+		    rbtn_black_set(a_type, a_field, tnode);		\
+		    (void)a_summarize(pathp->node,			\
+			rbtn_left_get(a_type, a_field, pathp->node),	\
+			rbtn_right_get(a_type, a_field, pathp->node));	\
+		}							\
+		(void)a_summarize(tnode,				\
+		    rbtn_left_get(a_type, a_field, tnode),		\
+		    rbtn_right_get(a_type, a_field, tnode));		\
+		/* Balance restored, but rotation modified subtree    */\
+		/* root, which may actually be the tree root.         */\
+		if (pathp == path) {					\
+		    /* Set root. */					\
+		    rbtree->rbt_root = tnode;				\
+		} else {						\
+		    if (pathp[-1].cmp < 0) {				\
+			rbtn_left_set(a_type, a_field, pathp[-1].node,	\
+			  tnode);					\
+		    } else {						\
+			rbtn_right_set(a_type, a_field, pathp[-1].node,	\
+			  tnode);					\
+		    }							\
+		    a_prefix##summarize_swapped_range(path, &pathp[-1],	\
+			swap_loc);					\
+		}							\
+		return;							\
+	    } else if (rbtn_red_get(a_type, a_field, pathp->node)) {	\
+		a_type *leftleft = rbtn_left_get(a_type, a_field, left);\
+		if (leftleft != NULL && rbtn_red_get(a_type, a_field,	\
+		  leftleft)) {						\
+		    /*        ||                                      */\
+		    /*      pathp(r)                                  */\
+		    /*     /        \\                                */\
+		    /*   (b)        (b)                               */\
+		    /*   /                                            */\
+		    /* (r)                                            */\
+		    a_type *tnode;					\
+		    rbtn_black_set(a_type, a_field, pathp->node);	\
+		    rbtn_red_set(a_type, a_field, left);		\
+		    rbtn_black_set(a_type, a_field, leftleft);		\
+		    rbtn_rotate_right(a_type, a_field, pathp->node,	\
+		      tnode);						\
+		    (void)a_summarize(pathp->node,			\
+			rbtn_left_get(a_type, a_field, pathp->node),	\
+			rbtn_right_get(a_type, a_field, pathp->node));	\
+		    (void)a_summarize(tnode,				\
+			rbtn_left_get(a_type, a_field, tnode),		\
+			rbtn_right_get(a_type, a_field, tnode));	\
+		    /* Balance restored, but rotation modified        */\
+		    /* subtree root.                                  */\
+		    assert((uintptr_t)pathp > (uintptr_t)path);		\
+		    if (pathp[-1].cmp < 0) {				\
+			rbtn_left_set(a_type, a_field, pathp[-1].node,	\
+			  tnode);					\
+		    } else {						\
+			rbtn_right_set(a_type, a_field, pathp[-1].node,	\
+			  tnode);					\
+		    }							\
+		    a_prefix##summarize_swapped_range(path, &pathp[-1],	\
+			swap_loc);					\
+		    return;						\
+		} else {						\
+		    /*        ||                                      */\
+		    /*      pathp(r)                                  */\
+		    /*     /        \\                                */\
+		    /*   (b)        (b)                               */\
+		    /*   /                                            */\
+		    /* (b)                                            */\
+		    rbtn_red_set(a_type, a_field, left);		\
+		    rbtn_black_set(a_type, a_field, pathp->node);	\
+		    /* Balance restored. */				\
+		    a_prefix##summarize_swapped_range(path, pathp,	\
+			swap_loc);					\
+		    return;						\
+		}							\
+	    } else {							\
+		a_type *leftleft = rbtn_left_get(a_type, a_field, left);\
+		if (leftleft != NULL && rbtn_red_get(a_type, a_field,	\
+		  leftleft)) {						\
+		    /*               ||                               */\
+		    /*             pathp(b)                           */\
+		    /*            /        \\                         */\
+		    /*          (b)        (b)                        */\
+		    /*          /                                     */\
+		    /*        (r)                                     */\
+		    a_type *tnode;					\
+		    rbtn_black_set(a_type, a_field, leftleft);		\
+		    rbtn_rotate_right(a_type, a_field, pathp->node,	\
+		      tnode);						\
+		    (void)a_summarize(pathp->node,			\
+			rbtn_left_get(a_type, a_field, pathp->node),	\
+			rbtn_right_get(a_type, a_field, pathp->node));	\
+		    (void)a_summarize(tnode,				\
+			rbtn_left_get(a_type, a_field, tnode),		\
+			rbtn_right_get(a_type, a_field, tnode));	\
+		    /* Balance restored, but rotation modified        */\
+		    /* subtree root, which may actually be the tree   */\
+		    /* root.                                          */\
+		    if (pathp == path) {				\
+			/* Set root. */					\
+			rbtree->rbt_root = tnode;			\
+		    } else {						\
+			if (pathp[-1].cmp < 0) {			\
+			    rbtn_left_set(a_type, a_field,		\
+			      pathp[-1].node, tnode);			\
+			} else {					\
+			    rbtn_right_set(a_type, a_field,		\
+			      pathp[-1].node, tnode);			\
+			}						\
+		        a_prefix##summarize_swapped_range(path,		\
+			    &pathp[-1], swap_loc);			\
+		    }							\
+		    return;						\
+		} else {						\
+		    /*               ||                               */\
+		    /*             pathp(b)                           */\
+		    /*            /        \\                         */\
+		    /*          (b)        (b)                        */\
+		    /*          /                                     */\
+		    /*        (b)                                     */\
+		    rbtn_red_set(a_type, a_field, left);		\
+		    (void)a_summarize(pathp->node,			\
+			rbtn_left_get(a_type, a_field, pathp->node),	\
+			rbtn_right_get(a_type, a_field, pathp->node));	\
+		}							\
+	    }								\
+	}								\
+    }									\
+    /* Set root. */							\
+    rbtree->rbt_root = path->node;					\
+    assert(!rbtn_red_get(a_type, a_field, rbtree->rbt_root));		\
+}									\
+a_attr a_type *								\
+a_prefix##iter_recurse(a_rbt_type *rbtree, a_type *node,		\
+  a_type *(*cb)(a_rbt_type *, a_type *, void *), void *arg) {		\
+    if (node == NULL) {							\
+	return NULL;							\
+    } else {								\
+	a_type *ret;							\
+	if ((ret = a_prefix##iter_recurse(rbtree, rbtn_left_get(a_type,	\
+	  a_field, node), cb, arg)) != NULL || (ret = cb(rbtree, node,	\
+	  arg)) != NULL) {						\
+	    return ret;							\
+	}								\
+	return a_prefix##iter_recurse(rbtree, rbtn_right_get(a_type,	\
+	  a_field, node), cb, arg);					\
+    }									\
+}									\
+a_attr a_type *								\
+a_prefix##iter_start(a_rbt_type *rbtree, a_type *start, a_type *node,	\
+  a_type *(*cb)(a_rbt_type *, a_type *, void *), void *arg) {		\
+    int cmp = a_cmp(start, node);					\
+    if (cmp < 0) {							\
+	a_type *ret;							\
+	if ((ret = a_prefix##iter_start(rbtree, start,			\
+	  rbtn_left_get(a_type, a_field, node), cb, arg)) != NULL ||	\
+	  (ret = cb(rbtree, node, arg)) != NULL) {			\
+	    return ret;							\
+	}								\
+	return a_prefix##iter_recurse(rbtree, rbtn_right_get(a_type,	\
+	  a_field, node), cb, arg);					\
+    } else if (cmp > 0) {						\
+	return a_prefix##iter_start(rbtree, start,			\
+	  rbtn_right_get(a_type, a_field, node), cb, arg);		\
+    } else {								\
+	a_type *ret;							\
+	if ((ret = cb(rbtree, node, arg)) != NULL) {			\
+	    return ret;							\
+	}								\
+	return a_prefix##iter_recurse(rbtree, rbtn_right_get(a_type,	\
+	  a_field, node), cb, arg);					\
+    }									\
+}									\
+a_attr a_type *								\
+a_prefix##iter(a_rbt_type *rbtree, a_type *start, a_type *(*cb)(	\
+  a_rbt_type *, a_type *, void *), void *arg) {				\
+    a_type *ret;							\
+    if (start != NULL) {						\
+	ret = a_prefix##iter_start(rbtree, start, rbtree->rbt_root,	\
+	  cb, arg);							\
+    } else {								\
+	ret = a_prefix##iter_recurse(rbtree, rbtree->rbt_root, cb, arg);\
+    }									\
+    return ret;								\
+}									\
+a_attr a_type *								\
+a_prefix##reverse_iter_recurse(a_rbt_type *rbtree, a_type *node,	\
+  a_type *(*cb)(a_rbt_type *, a_type *, void *), void *arg) {		\
+    if (node == NULL) {							\
+	return NULL;							\
+    } else {								\
+	a_type *ret;							\
+	if ((ret = a_prefix##reverse_iter_recurse(rbtree,		\
+	  rbtn_right_get(a_type, a_field, node), cb, arg)) != NULL ||	\
+	  (ret = cb(rbtree, node, arg)) != NULL) {			\
+	    return ret;							\
+	}								\
+	return a_prefix##reverse_iter_recurse(rbtree,			\
+	  rbtn_left_get(a_type, a_field, node), cb, arg);		\
+    }									\
+}									\
+a_attr a_type *								\
+a_prefix##reverse_iter_start(a_rbt_type *rbtree, a_type *start,		\
+  a_type *node, a_type *(*cb)(a_rbt_type *, a_type *, void *),		\
+  void *arg) {								\
+    int cmp = a_cmp(start, node);					\
+    if (cmp > 0) {							\
+	a_type *ret;							\
+	if ((ret = a_prefix##reverse_iter_start(rbtree, start,		\
+	  rbtn_right_get(a_type, a_field, node), cb, arg)) != NULL ||	\
+	  (ret = cb(rbtree, node, arg)) != NULL) {			\
+	    return ret;							\
+	}								\
+	return a_prefix##reverse_iter_recurse(rbtree,			\
+	  rbtn_left_get(a_type, a_field, node), cb, arg);		\
+    } else if (cmp < 0) {						\
+	return a_prefix##reverse_iter_start(rbtree, start,		\
+	  rbtn_left_get(a_type, a_field, node), cb, arg);		\
+    } else {								\
+	a_type *ret;							\
+	if ((ret = cb(rbtree, node, arg)) != NULL) {			\
+	    return ret;							\
+	}								\
+	return a_prefix##reverse_iter_recurse(rbtree,			\
+	  rbtn_left_get(a_type, a_field, node), cb, arg);		\
+    }									\
+}									\
+a_attr a_type *								\
+a_prefix##reverse_iter(a_rbt_type *rbtree, a_type *start,		\
+  a_type *(*cb)(a_rbt_type *, a_type *, void *), void *arg) {		\
+    a_type *ret;							\
+    if (start != NULL) {						\
+	ret = a_prefix##reverse_iter_start(rbtree, start,		\
+	  rbtree->rbt_root, cb, arg);					\
+    } else {								\
+	ret = a_prefix##reverse_iter_recurse(rbtree, rbtree->rbt_root,	\
+	  cb, arg);							\
+    }									\
+    return ret;								\
+}									\
+a_attr void								\
+a_prefix##destroy_recurse(a_rbt_type *rbtree, a_type *node, void (*cb)(	\
+  a_type *, void *), void *arg) {					\
+    if (node == NULL) {							\
+	return;								\
+    }									\
+    a_prefix##destroy_recurse(rbtree, rbtn_left_get(a_type, a_field,	\
+      node), cb, arg);							\
+    rbtn_left_set(a_type, a_field, (node), NULL);			\
+    a_prefix##destroy_recurse(rbtree, rbtn_right_get(a_type, a_field,	\
+      node), cb, arg);							\
+    rbtn_right_set(a_type, a_field, (node), NULL);			\
+    if (cb) {								\
+	cb(node, arg);							\
+    }									\
+}									\
+a_attr void								\
+a_prefix##destroy(a_rbt_type *rbtree, void (*cb)(a_type *, void *),	\
+  void *arg) {								\
+    a_prefix##destroy_recurse(rbtree, rbtree->rbt_root, cb, arg);	\
+    rbtree->rbt_root = NULL;						\
+}									\
+/* BEGIN SUMMARIZED-ONLY IMPLEMENTATION */				\
+rb_summarized_only_##a_is_summarized(					\
+static inline a_prefix##path_entry_t *					\
+a_prefix##wind(a_rbt_type *rbtree,					\
+    a_prefix##path_entry_t path[RB_MAX_DEPTH], a_type *node) {		\
+    a_prefix##path_entry_t *pathp;					\
+    path->node = rbtree->rbt_root;					\
+    for (pathp = path; ; pathp++) {					\
+	assert((size_t)(pathp - path) < RB_MAX_DEPTH);			\
+	pathp->cmp = a_cmp(node, pathp->node);				\
+	if (pathp->cmp < 0) {						\
+	    pathp[1].node = rbtn_left_get(a_type, a_field,		\
+		pathp->node);						\
+	} else if (pathp->cmp == 0) {					\
+	    return pathp;						\
+	} else {							\
+	    pathp[1].node = rbtn_right_get(a_type, a_field,		\
+		pathp->node);						\
+	}								\
+    }									\
+    unreachable();							\
+}									\
+a_attr void								\
+a_prefix##update_summaries(a_rbt_type *rbtree, a_type *node) {		\
+    a_prefix##path_entry_t path[RB_MAX_DEPTH];				\
+    a_prefix##path_entry_t *pathp = a_prefix##wind(rbtree, path, node);	\
+    a_prefix##summarize_range(path, pathp);				\
+}									\
+a_attr bool								\
+a_prefix##empty_filtered(a_rbt_type *rbtree,				\
+  bool (*filter_node)(void *, a_type *),				\
+  bool (*filter_subtree)(void *, a_type *),				\
+  void *filter_ctx) {							\
+    a_type *node = rbtree->rbt_root;					\
+    return node == NULL || !filter_subtree(filter_ctx, node);		\
+}									\
+static inline a_type *							\
+a_prefix##first_filtered_from_node(a_type *node,			\
+  bool (*filter_node)(void *, a_type *),				\
+  bool (*filter_subtree)(void *, a_type *),				\
+  void *filter_ctx) {							\
+    assert(node != NULL && filter_subtree(filter_ctx, node));		\
+    while (true) {							\
+	a_type *left = rbtn_left_get(a_type, a_field, node);		\
+	a_type *right = rbtn_right_get(a_type, a_field, node);		\
+	if (left != NULL && filter_subtree(filter_ctx, left)) {		\
+	    node = left;						\
+	} else if (filter_node(filter_ctx, node)) {			\
+	    return node;						\
+	} else {							\
+		assert(right != NULL					\
+		    && filter_subtree(filter_ctx, right));		\
+		node = right;						\
+	}								\
+    }									\
+    unreachable();							\
+}									\
+a_attr a_type *								\
+a_prefix##first_filtered(a_rbt_type *rbtree,				\
+  bool (*filter_node)(void *, a_type *),				\
+  bool (*filter_subtree)(void *, a_type *),				\
+  void *filter_ctx) {							\
+    a_type *node = rbtree->rbt_root;					\
+    if (node == NULL || !filter_subtree(filter_ctx, node)) {		\
+	return NULL;							\
+    }									\
+    return a_prefix##first_filtered_from_node(node, filter_node,	\
+	filter_subtree, filter_ctx);					\
+}									\
+static inline a_type *							\
+a_prefix##last_filtered_from_node(a_type *node,				\
+  bool (*filter_node)(void *, a_type *),				\
+  bool (*filter_subtree)(void *, a_type *),				\
+  void *filter_ctx) {							\
+    assert(node != NULL && filter_subtree(filter_ctx, node));		\
+    while (true) {							\
+	a_type *left = rbtn_left_get(a_type, a_field, node);		\
+	a_type *right = rbtn_right_get(a_type, a_field, node);		\
+	if (right != NULL && filter_subtree(filter_ctx, right)) {	\
+	    node = right;						\
+	} else if (filter_node(filter_ctx, node)) {			\
+	    return node;						\
+	} else {							\
+		assert(left != NULL					\
+		    && filter_subtree(filter_ctx, left));		\
+		node = left;						\
+	}								\
+    }									\
+    unreachable();							\
+}									\
+a_attr a_type *								\
+a_prefix##last_filtered(a_rbt_type *rbtree,				\
+  bool (*filter_node)(void *, a_type *),				\
+  bool (*filter_subtree)(void *, a_type *),				\
+  void *filter_ctx) {							\
+    a_type *node = rbtree->rbt_root;					\
+    if (node == NULL || !filter_subtree(filter_ctx, node)) {		\
+	return NULL;							\
+    }									\
+    return a_prefix##last_filtered_from_node(node, filter_node,		\
+	filter_subtree, filter_ctx);					\
+}									\
+/* Internal implementation function.  Search for a node comparing     */\
+/* equal to key matching the filter.  If such a node is in the tree,  */\
+/* return it.  Additionally, the caller has the option to ask for     */\
+/* bounds on the next / prev node in the tree passing the filter.     */\
+/* If nextbound is true, then this function will do one of the        */\
+/* following:                                                         */\
+/* - Fill in *nextbound_node with the smallest node in the tree       */\
+/*   greater than key passing the filter, and NULL-out                */\
+/*   *nextbound_subtree.                                              */\
+/* - Fill in *nextbound_subtree with a parent of that node which is   */\
+/*   not a parent of the searched-for node, and NULL-out              */\
+/*   *nextbound_node.                                                 */\
+/* - NULL-out both *nextbound_node and *nextbound_subtree, in which   */\
+/*   case no node greater than key but passing the filter is in the   */\
+/*   tree.                                                            */\
+/* The prevbound case is similar.  If the caller knows that key is in */\
+/* the tree and that the subtree rooted at key does not contain a     */\
+/* node satisfying the bound being searched for, then they can pass   */\
+/* false for include_subtree, in which case we won't bother searching */\
+/* there (risking a cache miss).                                      */\
+/*                                                                    */\
+/* This API is unfortunately complex; but the logic for filtered      */\
+/* searches is very subtle, and otherwise we would have to repeat it  */\
+/* multiple times for filtered search, nsearch, psearch, next, and    */\
+/* prev.                                                              */\
+static inline a_type *							\
+a_prefix##search_with_filter_bounds(a_rbt_type *rbtree,			\
+  const a_type *key,							\
+  bool (*filter_node)(void *, a_type *),				\
+  bool (*filter_subtree)(void *, a_type *),				\
+  void *filter_ctx,							\
+  bool include_subtree,							\
+  bool nextbound, a_type **nextbound_node, a_type **nextbound_subtree,	\
+  bool prevbound, a_type **prevbound_node, a_type **prevbound_subtree) {\
+    if (nextbound) {							\
+	    *nextbound_node = NULL;					\
+	    *nextbound_subtree = NULL;					\
+    }									\
+    if (prevbound) {							\
+	    *prevbound_node = NULL;					\
+	    *prevbound_subtree = NULL;					\
+    }									\
+    a_type *tnode = rbtree->rbt_root;					\
+    while (tnode != NULL && filter_subtree(filter_ctx, tnode)) {	\
+	int cmp = a_cmp(key, tnode);					\
+	a_type *tleft = rbtn_left_get(a_type, a_field, tnode);		\
+	a_type *tright = rbtn_right_get(a_type, a_field, tnode);	\
+	if (cmp < 0) {							\
+	    if (nextbound) {						\
+		if (filter_node(filter_ctx, tnode)) {			\
+		    *nextbound_node = tnode;				\
+		    *nextbound_subtree = NULL;				\
+		} else if (tright != NULL && filter_subtree(		\
+		    filter_ctx, tright)) {				\
+		    *nextbound_node = NULL;				\
+		    *nextbound_subtree = tright;			\
+		}							\
+	    }								\
+	    tnode = tleft;						\
+	} else if (cmp > 0) {						\
+	    if (prevbound) {						\
+		if (filter_node(filter_ctx, tnode)) {			\
+		    *prevbound_node = tnode;				\
+		    *prevbound_subtree = NULL;				\
+		} else if (tleft != NULL && filter_subtree(		\
+		    filter_ctx, tleft)) {				\
+		    *prevbound_node = NULL;				\
+		    *prevbound_subtree = tleft;				\
+		}							\
+	    }								\
+	    tnode = tright;						\
+	} else {							\
+	    if (filter_node(filter_ctx, tnode)) {			\
+		return tnode;						\
+	    }								\
+	    if (include_subtree) {					\
+		if (prevbound && tleft != NULL && filter_subtree(	\
+		    filter_ctx, tleft)) {				\
+		    *prevbound_node = NULL;				\
+		    *prevbound_subtree = tleft;				\
+		}							\
+		if (nextbound && tright != NULL && filter_subtree(	\
+		    filter_ctx, tright)) {				\
+		    *nextbound_node = NULL;				\
+		    *nextbound_subtree = tright;			\
+		}							\
+	    }								\
+	    return NULL;						\
+	}								\
+    }									\
+    return NULL;							\
+}									\
+a_attr a_type *								\
+a_prefix##next_filtered(a_rbt_type *rbtree, a_type *node,		\
+  bool (*filter_node)(void *, a_type *),				\
+  bool (*filter_subtree)(void *, a_type *),				\
+  void *filter_ctx) {							\
+    a_type *nright = rbtn_right_get(a_type, a_field, node);		\
+    if (nright != NULL && filter_subtree(filter_ctx, nright)) {		\
+	return a_prefix##first_filtered_from_node(nright, filter_node,	\
+	    filter_subtree, filter_ctx);				\
+    }									\
+    a_type *node_candidate;						\
+    a_type *subtree_candidate;						\
+    a_type *search_result = a_prefix##search_with_filter_bounds(	\
+	rbtree, node, filter_node, filter_subtree, filter_ctx,		\
+	/* include_subtree */ false,					\
+	/* nextbound */ true, &node_candidate, &subtree_candidate,	\
+	/* prevbound */ false, NULL, NULL);				\
+    assert(node == search_result					\
+	|| !filter_node(filter_ctx, node));				\
+    if (node_candidate != NULL) {					\
+	return node_candidate;						\
+    }									\
+    if (subtree_candidate != NULL) {					\
+	return a_prefix##first_filtered_from_node(			\
+	    subtree_candidate, filter_node, filter_subtree,		\
+	    filter_ctx);						\
+    }									\
+    return NULL;							\
+}									\
+a_attr a_type *								\
+a_prefix##prev_filtered(a_rbt_type *rbtree, a_type *node,		\
+  bool (*filter_node)(void *, a_type *),				\
+  bool (*filter_subtree)(void *, a_type *),				\
+  void *filter_ctx) {							\
+    a_type *nleft = rbtn_left_get(a_type, a_field, node);		\
+    if (nleft != NULL && filter_subtree(filter_ctx, nleft)) {		\
+	return a_prefix##last_filtered_from_node(nleft, filter_node,	\
+	    filter_subtree, filter_ctx);				\
+    }									\
+    a_type *node_candidate;						\
+    a_type *subtree_candidate;						\
+    a_type *search_result = a_prefix##search_with_filter_bounds(	\
+	rbtree, node, filter_node, filter_subtree, filter_ctx,		\
+	/* include_subtree */ false,					\
+	/* nextbound */ false, NULL, NULL,				\
+	/* prevbound */ true, &node_candidate, &subtree_candidate);	\
+    assert(node == search_result					\
+	|| !filter_node(filter_ctx, node));				\
+    if (node_candidate != NULL) {					\
+	return node_candidate;						\
+    }									\
+    if (subtree_candidate != NULL) {					\
+	return a_prefix##last_filtered_from_node(			\
+	    subtree_candidate, filter_node, filter_subtree,		\
+	    filter_ctx);						\
+    }									\
+    return NULL;							\
+}									\
+a_attr a_type *								\
+a_prefix##search_filtered(a_rbt_type *rbtree, const a_type *key,	\
+  bool (*filter_node)(void *, a_type *),				\
+  bool (*filter_subtree)(void *, a_type *),				\
+  void *filter_ctx) {							\
+    a_type *result = a_prefix##search_with_filter_bounds(rbtree, key,	\
+	filter_node, filter_subtree, filter_ctx,			\
+	/* include_subtree */ false,					\
+	/* nextbound */ false, NULL, NULL,				\
+	/* prevbound */ false, NULL, NULL);				\
+    return result;							\
+}									\
+a_attr a_type *								\
+a_prefix##nsearch_filtered(a_rbt_type *rbtree, const a_type *key,	\
+  bool (*filter_node)(void *, a_type *),				\
+  bool (*filter_subtree)(void *, a_type *),				\
+  void *filter_ctx) {							\
+    a_type *node_candidate;						\
+    a_type *subtree_candidate;						\
+    a_type *result = a_prefix##search_with_filter_bounds(rbtree, key,	\
+	filter_node, filter_subtree, filter_ctx,			\
+	/* include_subtree */ true,					\
+	/* nextbound */ true, &node_candidate, &subtree_candidate,	\
+	/* prevbound */ false, NULL, NULL);				\
+    if (result != NULL) {						\
+	return result;							\
+    }									\
+    if (node_candidate != NULL) {					\
+	return node_candidate;						\
+    }									\
+    if (subtree_candidate != NULL) {					\
+	return a_prefix##first_filtered_from_node(			\
+	    subtree_candidate, filter_node, filter_subtree,		\
+	    filter_ctx);						\
+    }									\
+    return NULL;							\
+}									\
+a_attr a_type *								\
+a_prefix##psearch_filtered(a_rbt_type *rbtree, const a_type *key,	\
+  bool (*filter_node)(void *, a_type *),				\
+  bool (*filter_subtree)(void *, a_type *),				\
+  void *filter_ctx) {							\
+    a_type *node_candidate;						\
+    a_type *subtree_candidate;						\
+    a_type *result = a_prefix##search_with_filter_bounds(rbtree, key,	\
+	filter_node, filter_subtree, filter_ctx,			\
+	/* include_subtree */ true,					\
+	/* nextbound */ false, NULL, NULL,				\
+	/* prevbound */ true, &node_candidate, &subtree_candidate);	\
+    if (result != NULL) {						\
+	return result;							\
+    }									\
+    if (node_candidate != NULL) {					\
+	return node_candidate;						\
+    }									\
+    if (subtree_candidate != NULL) {					\
+	return a_prefix##last_filtered_from_node(			\
+	    subtree_candidate, filter_node, filter_subtree,		\
+	    filter_ctx);						\
+    }									\
+    return NULL;							\
+}									\
+a_attr a_type *								\
+a_prefix##iter_recurse_filtered(a_rbt_type *rbtree, a_type *node,	\
+  a_type *(*cb)(a_rbt_type *, a_type *, void *), void *arg,		\
+  bool (*filter_node)(void *, a_type *),				\
+  bool (*filter_subtree)(void *, a_type *),				\
+  void *filter_ctx) {							\
+    if (node == NULL || !filter_subtree(filter_ctx, node)) {		\
+	return NULL;							\
+    }									\
+    a_type *ret;							\
+    a_type *left = rbtn_left_get(a_type, a_field, node);		\
+    a_type *right = rbtn_right_get(a_type, a_field, node);		\
+    ret = a_prefix##iter_recurse_filtered(rbtree, left, cb, arg,	\
+      filter_node, filter_subtree, filter_ctx);				\
+    if (ret != NULL) {							\
+	return ret;							\
+    }									\
+    if (filter_node(filter_ctx, node)) {				\
+	ret = cb(rbtree, node, arg);					\
+    }									\
+    if (ret != NULL) {							\
+	return ret;							\
+    }									\
+    return a_prefix##iter_recurse_filtered(rbtree, right, cb, arg,	\
+      filter_node, filter_subtree, filter_ctx);				\
+}									\
+a_attr a_type *								\
+a_prefix##iter_start_filtered(a_rbt_type *rbtree, a_type *start,	\
+  a_type *node, a_type *(*cb)(a_rbt_type *, a_type *, void *),		\
+  void *arg, bool (*filter_node)(void *, a_type *),			\
+  bool (*filter_subtree)(void *, a_type *),				\
+  void *filter_ctx) {							\
+    if (!filter_subtree(filter_ctx, node)) {				\
+	return NULL;							\
+    }									\
+    int cmp = a_cmp(start, node);					\
+    a_type *ret;							\
+    a_type *left = rbtn_left_get(a_type, a_field, node);		\
+    a_type *right = rbtn_right_get(a_type, a_field, node);		\
+    if (cmp < 0) {							\
+	ret = a_prefix##iter_start_filtered(rbtree, start, left, cb,	\
+	    arg, filter_node, filter_subtree, filter_ctx);		\
+	if (ret != NULL) {						\
+	    return ret;							\
+	}								\
+	if (filter_node(filter_ctx, node)) {				\
+	    ret = cb(rbtree, node, arg);				\
+	    if (ret != NULL) {						\
+		return ret;						\
+	    }								\
+	}								\
+	return a_prefix##iter_recurse_filtered(rbtree, right, cb, arg,	\
+	    filter_node, filter_subtree, filter_ctx);			\
+    } else if (cmp > 0) {						\
+	return a_prefix##iter_start_filtered(rbtree, start, right,	\
+	  cb, arg, filter_node, filter_subtree, filter_ctx);		\
+    } else {								\
+	if (filter_node(filter_ctx, node)) {				\
+	    ret = cb(rbtree, node, arg);				\
+	    if (ret != NULL) {						\
+		return ret;						\
+	    }								\
+	}								\
+	return a_prefix##iter_recurse_filtered(rbtree, right, cb, arg,	\
+	  filter_node, filter_subtree, filter_ctx);			\
+    }									\
+}									\
+a_attr a_type *								\
+a_prefix##iter_filtered(a_rbt_type *rbtree, a_type *start,		\
+  a_type *(*cb)(a_rbt_type *, a_type *, void *), void *arg,		\
+  bool (*filter_node)(void *, a_type *),				\
+  bool (*filter_subtree)(void *, a_type *),				\
+  void *filter_ctx) {							\
+    a_type *ret;							\
+    if (start != NULL) {						\
+	ret = a_prefix##iter_start_filtered(rbtree, start,		\
+	    rbtree->rbt_root, cb, arg, filter_node, filter_subtree,	\
+	    filter_ctx);						\
+    } else {								\
+	ret = a_prefix##iter_recurse_filtered(rbtree, rbtree->rbt_root,	\
+	    cb, arg, filter_node, filter_subtree, filter_ctx);		\
+    }									\
+    return ret;								\
+}									\
+a_attr a_type *								\
+a_prefix##reverse_iter_recurse_filtered(a_rbt_type *rbtree,		\
+  a_type *node, a_type *(*cb)(a_rbt_type *, a_type *, void *),		\
+  void *arg,								\
+  bool (*filter_node)(void *, a_type *),				\
+  bool (*filter_subtree)(void *, a_type *),				\
+  void *filter_ctx) {							\
+    if (node == NULL || !filter_subtree(filter_ctx, node)) {		\
+	return NULL;							\
+    }									\
+    a_type *ret;							\
+    a_type *left = rbtn_left_get(a_type, a_field, node);		\
+    a_type *right = rbtn_right_get(a_type, a_field, node);		\
+    ret = a_prefix##reverse_iter_recurse_filtered(rbtree, right, cb,	\
+	arg, filter_node, filter_subtree, filter_ctx);			\
+    if (ret != NULL) {							\
+	return ret;							\
+    }									\
+    if (filter_node(filter_ctx, node)) {				\
+	ret = cb(rbtree, node, arg);					\
+    }									\
+    if (ret != NULL) {							\
+	return ret;							\
+    }									\
+    return a_prefix##reverse_iter_recurse_filtered(rbtree, left, cb,	\
+      arg, filter_node, filter_subtree, filter_ctx);			\
+}									\
+a_attr a_type *								\
+a_prefix##reverse_iter_start_filtered(a_rbt_type *rbtree, a_type *start,\
+  a_type *node, a_type *(*cb)(a_rbt_type *, a_type *, void *),		\
+  void *arg, bool (*filter_node)(void *, a_type *),			\
+  bool (*filter_subtree)(void *, a_type *),				\
+  void *filter_ctx) {							\
+    if (!filter_subtree(filter_ctx, node)) {				\
+	return NULL;							\
+    }									\
+    int cmp = a_cmp(start, node);					\
+    a_type *ret;							\
+    a_type *left = rbtn_left_get(a_type, a_field, node);		\
+    a_type *right = rbtn_right_get(a_type, a_field, node);		\
+    if (cmp > 0) {							\
+	ret = a_prefix##reverse_iter_start_filtered(rbtree, start,	\
+	    right, cb, arg, filter_node, filter_subtree, filter_ctx);	\
+	if (ret != NULL) {						\
+	    return ret;							\
+	}								\
+	if (filter_node(filter_ctx, node)) {				\
+	    ret = cb(rbtree, node, arg);				\
+	    if (ret != NULL) {						\
+		return ret;						\
+	    }								\
+	}								\
+	return a_prefix##reverse_iter_recurse_filtered(rbtree, left, cb,\
+	    arg, filter_node, filter_subtree, filter_ctx);		\
+    } else if (cmp < 0) {						\
+	return a_prefix##reverse_iter_start_filtered(rbtree, start,	\
+	  left, cb, arg, filter_node, filter_subtree, filter_ctx);	\
+    } else {								\
+	if (filter_node(filter_ctx, node)) {				\
+	    ret = cb(rbtree, node, arg);				\
+	    if (ret != NULL) {						\
+		return ret;						\
+	    }								\
+	}								\
+	return a_prefix##reverse_iter_recurse_filtered(rbtree, left, cb,\
+	  arg, filter_node, filter_subtree, filter_ctx);		\
+    }									\
+}									\
+a_attr a_type *								\
+a_prefix##reverse_iter_filtered(a_rbt_type *rbtree, a_type *start,	\
+  a_type *(*cb)(a_rbt_type *, a_type *, void *), void *arg,		\
+  bool (*filter_node)(void *, a_type *),				\
+  bool (*filter_subtree)(void *, a_type *),				\
+  void *filter_ctx) {							\
+    a_type *ret;							\
+    if (start != NULL) {						\
+	ret = a_prefix##reverse_iter_start_filtered(rbtree, start,	\
+	    rbtree->rbt_root, cb, arg, filter_node, filter_subtree,	\
+	    filter_ctx);						\
+    } else {								\
+	ret = a_prefix##reverse_iter_recurse_filtered(rbtree,		\
+	    rbtree->rbt_root, cb, arg, filter_node, filter_subtree,	\
+	    filter_ctx);						\
+    }									\
+    return ret;								\
+}									\
+) /* end rb_summarized_only */
+
+#endif /* JEMALLOC_INTERNAL_RB_H */
diff --git a/deps/jemalloc/include/jemalloc/internal/rtree.h b/deps/jemalloc/include/jemalloc/internal/rtree.h
new file mode 100644
index 0000000..a00adb2
--- /dev/null
+++ b/deps/jemalloc/include/jemalloc/internal/rtree.h
@@ -0,0 +1,554 @@
+#ifndef JEMALLOC_INTERNAL_RTREE_H
+#define JEMALLOC_INTERNAL_RTREE_H
+
+#include "jemalloc/internal/atomic.h"
+#include "jemalloc/internal/mutex.h"
+#include "jemalloc/internal/rtree_tsd.h"
+#include "jemalloc/internal/sc.h"
+#include "jemalloc/internal/tsd.h"
+
+/*
+ * This radix tree implementation is tailored to the singular purpose of
+ * associating metadata with extents that are currently owned by jemalloc.
+ *
+ *******************************************************************************
+ */
+
+/* Number of high insignificant bits. */
+#define RTREE_NHIB ((1U << (LG_SIZEOF_PTR+3)) - LG_VADDR)
+/* Number of low insigificant bits. */
+#define RTREE_NLIB LG_PAGE
+/* Number of significant bits. */
+#define RTREE_NSB (LG_VADDR - RTREE_NLIB)
+/* Number of levels in radix tree. */
+#if RTREE_NSB <= 10
+#  define RTREE_HEIGHT 1
+#elif RTREE_NSB <= 36
+#  define RTREE_HEIGHT 2
+#elif RTREE_NSB <= 52
+#  define RTREE_HEIGHT 3
+#else
+#  error Unsupported number of significant virtual address bits
+#endif
+/* Use compact leaf representation if virtual address encoding allows. */
+#if RTREE_NHIB >= LG_CEIL(SC_NSIZES)
+#  define RTREE_LEAF_COMPACT
+#endif
+
+typedef struct rtree_node_elm_s rtree_node_elm_t;
+struct rtree_node_elm_s {
+	atomic_p_t	child; /* (rtree_{node,leaf}_elm_t *) */
+};
+
+typedef struct rtree_metadata_s rtree_metadata_t;
+struct rtree_metadata_s {
+	szind_t szind;
+	extent_state_t state; /* Mirrors edata->state. */
+	bool is_head; /* Mirrors edata->is_head. */
+	bool slab;
+};
+
+typedef struct rtree_contents_s rtree_contents_t;
+struct rtree_contents_s {
+	edata_t *edata;
+	rtree_metadata_t metadata;
+};
+
+#define RTREE_LEAF_STATE_WIDTH EDATA_BITS_STATE_WIDTH
+#define RTREE_LEAF_STATE_SHIFT 2
+#define RTREE_LEAF_STATE_MASK MASK(RTREE_LEAF_STATE_WIDTH, RTREE_LEAF_STATE_SHIFT)
+
+struct rtree_leaf_elm_s {
+#ifdef RTREE_LEAF_COMPACT
+	/*
+	 * Single pointer-width field containing all three leaf element fields.
+	 * For example, on a 64-bit x64 system with 48 significant virtual
+	 * memory address bits, the index, edata, and slab fields are packed as
+	 * such:
+	 *
+	 * x: index
+	 * e: edata
+	 * s: state
+	 * h: is_head
+	 * b: slab
+	 *
+	 *   00000000 xxxxxxxx eeeeeeee [...] eeeeeeee e00ssshb
+	 */
+	atomic_p_t	le_bits;
+#else
+	atomic_p_t	le_edata; /* (edata_t *) */
+	/*
+	 * From high to low bits: szind (8 bits), state (4 bits), is_head, slab
+	 */
+	atomic_u_t	le_metadata;
+#endif
+};
+
+typedef struct rtree_level_s rtree_level_t;
+struct rtree_level_s {
+	/* Number of key bits distinguished by this level. */
+	unsigned		bits;
+	/*
+	 * Cumulative number of key bits distinguished by traversing to
+	 * corresponding tree level.
+	 */
+	unsigned		cumbits;
+};
+
+typedef struct rtree_s rtree_t;
+struct rtree_s {
+	base_t			*base;
+	malloc_mutex_t		init_lock;
+	/* Number of elements based on rtree_levels[0].bits. */
+#if RTREE_HEIGHT > 1
+	rtree_node_elm_t	root[1U << (RTREE_NSB/RTREE_HEIGHT)];
+#else
+	rtree_leaf_elm_t	root[1U << (RTREE_NSB/RTREE_HEIGHT)];
+#endif
+};
+
+/*
+ * Split the bits into one to three partitions depending on number of
+ * significant bits.  It the number of bits does not divide evenly into the
+ * number of levels, place one remainder bit per level starting at the leaf
+ * level.
+ */
+static const rtree_level_t rtree_levels[] = {
+#if RTREE_HEIGHT == 1
+	{RTREE_NSB, RTREE_NHIB + RTREE_NSB}
+#elif RTREE_HEIGHT == 2
+	{RTREE_NSB/2, RTREE_NHIB + RTREE_NSB/2},
+	{RTREE_NSB/2 + RTREE_NSB%2, RTREE_NHIB + RTREE_NSB}
+#elif RTREE_HEIGHT == 3
+	{RTREE_NSB/3, RTREE_NHIB + RTREE_NSB/3},
+	{RTREE_NSB/3 + RTREE_NSB%3/2,
+	    RTREE_NHIB + RTREE_NSB/3*2 + RTREE_NSB%3/2},
+	{RTREE_NSB/3 + RTREE_NSB%3 - RTREE_NSB%3/2, RTREE_NHIB + RTREE_NSB}
+#else
+#  error Unsupported rtree height
+#endif
+};
+
+bool rtree_new(rtree_t *rtree, base_t *base, bool zeroed);
+
+rtree_leaf_elm_t *rtree_leaf_elm_lookup_hard(tsdn_t *tsdn, rtree_t *rtree,
+    rtree_ctx_t *rtree_ctx, uintptr_t key, bool dependent, bool init_missing);
+
+JEMALLOC_ALWAYS_INLINE unsigned
+rtree_leaf_maskbits(void) {
+	unsigned ptrbits = ZU(1) << (LG_SIZEOF_PTR+3);
+	unsigned cumbits = (rtree_levels[RTREE_HEIGHT-1].cumbits -
+	    rtree_levels[RTREE_HEIGHT-1].bits);
+	return ptrbits - cumbits;
+}
+
+JEMALLOC_ALWAYS_INLINE uintptr_t
+rtree_leafkey(uintptr_t key) {
+	uintptr_t mask = ~((ZU(1) << rtree_leaf_maskbits()) - 1);
+	return (key & mask);
+}
+
+JEMALLOC_ALWAYS_INLINE size_t
+rtree_cache_direct_map(uintptr_t key) {
+	return (size_t)((key >> rtree_leaf_maskbits()) &
+	    (RTREE_CTX_NCACHE - 1));
+}
+
+JEMALLOC_ALWAYS_INLINE uintptr_t
+rtree_subkey(uintptr_t key, unsigned level) {
+	unsigned ptrbits = ZU(1) << (LG_SIZEOF_PTR+3);
+	unsigned cumbits = rtree_levels[level].cumbits;
+	unsigned shiftbits = ptrbits - cumbits;
+	unsigned maskbits = rtree_levels[level].bits;
+	uintptr_t mask = (ZU(1) << maskbits) - 1;
+	return ((key >> shiftbits) & mask);
+}
+
+/*
+ * Atomic getters.
+ *
+ * dependent: Reading a value on behalf of a pointer to a valid allocation
+ *            is guaranteed to be a clean read even without synchronization,
+ *            because the rtree update became visible in memory before the
+ *            pointer came into existence.
+ * !dependent: An arbitrary read, e.g. on behalf of ivsalloc(), may not be
+ *             dependent on a previous rtree write, which means a stale read
+ *             could result if synchronization were omitted here.
+ */
+#  ifdef RTREE_LEAF_COMPACT
+JEMALLOC_ALWAYS_INLINE uintptr_t
+rtree_leaf_elm_bits_read(tsdn_t *tsdn, rtree_t *rtree,
+    rtree_leaf_elm_t *elm, bool dependent) {
+	return (uintptr_t)atomic_load_p(&elm->le_bits, dependent
+	    ? ATOMIC_RELAXED : ATOMIC_ACQUIRE);
+}
+
+JEMALLOC_ALWAYS_INLINE uintptr_t
+rtree_leaf_elm_bits_encode(rtree_contents_t contents) {
+	assert((uintptr_t)contents.edata % (uintptr_t)EDATA_ALIGNMENT == 0);
+	uintptr_t edata_bits = (uintptr_t)contents.edata
+	    & (((uintptr_t)1 << LG_VADDR) - 1);
+
+	uintptr_t szind_bits = (uintptr_t)contents.metadata.szind << LG_VADDR;
+	uintptr_t slab_bits = (uintptr_t)contents.metadata.slab;
+	uintptr_t is_head_bits = (uintptr_t)contents.metadata.is_head << 1;
+	uintptr_t state_bits = (uintptr_t)contents.metadata.state <<
+	    RTREE_LEAF_STATE_SHIFT;
+	uintptr_t metadata_bits = szind_bits | state_bits | is_head_bits |
+	    slab_bits;
+	assert((edata_bits & metadata_bits) == 0);
+
+	return edata_bits | metadata_bits;
+}
+
+JEMALLOC_ALWAYS_INLINE rtree_contents_t
+rtree_leaf_elm_bits_decode(uintptr_t bits) {
+	rtree_contents_t contents;
+	/* Do the easy things first. */
+	contents.metadata.szind = bits >> LG_VADDR;
+	contents.metadata.slab = (bool)(bits & 1);
+	contents.metadata.is_head = (bool)(bits & (1 << 1));
+
+	uintptr_t state_bits = (bits & RTREE_LEAF_STATE_MASK) >>
+	    RTREE_LEAF_STATE_SHIFT;
+	assert(state_bits <= extent_state_max);
+	contents.metadata.state = (extent_state_t)state_bits;
+
+	uintptr_t low_bit_mask = ~((uintptr_t)EDATA_ALIGNMENT - 1);
+#    ifdef __aarch64__
+	/*
+	 * aarch64 doesn't sign extend the highest virtual address bit to set
+	 * the higher ones.  Instead, the high bits get zeroed.
+	 */
+	uintptr_t high_bit_mask = ((uintptr_t)1 << LG_VADDR) - 1;
+	/* Mask off metadata. */
+	uintptr_t mask = high_bit_mask & low_bit_mask;
+	contents.edata = (edata_t *)(bits & mask);
+#    else
+	/* Restore sign-extended high bits, mask metadata bits. */
+	contents.edata = (edata_t *)((uintptr_t)((intptr_t)(bits << RTREE_NHIB)
+	    >> RTREE_NHIB) & low_bit_mask);
+#    endif
+	assert((uintptr_t)contents.edata % (uintptr_t)EDATA_ALIGNMENT == 0);
+	return contents;
+}
+
+#  endif /* RTREE_LEAF_COMPACT */
+
+JEMALLOC_ALWAYS_INLINE rtree_contents_t
+rtree_leaf_elm_read(tsdn_t *tsdn, rtree_t *rtree, rtree_leaf_elm_t *elm,
+    bool dependent) {
+#ifdef RTREE_LEAF_COMPACT
+	uintptr_t bits = rtree_leaf_elm_bits_read(tsdn, rtree, elm, dependent);
+	rtree_contents_t contents = rtree_leaf_elm_bits_decode(bits);
+	return contents;
+#else
+	rtree_contents_t contents;
+	unsigned metadata_bits = atomic_load_u(&elm->le_metadata, dependent
+	    ? ATOMIC_RELAXED : ATOMIC_ACQUIRE);
+	contents.metadata.slab = (bool)(metadata_bits & 1);
+	contents.metadata.is_head = (bool)(metadata_bits & (1 << 1));
+
+	uintptr_t state_bits = (metadata_bits & RTREE_LEAF_STATE_MASK) >>
+	    RTREE_LEAF_STATE_SHIFT;
+	assert(state_bits <= extent_state_max);
+	contents.metadata.state = (extent_state_t)state_bits;
+	contents.metadata.szind = metadata_bits >> (RTREE_LEAF_STATE_SHIFT +
+	    RTREE_LEAF_STATE_WIDTH);
+
+	contents.edata = (edata_t *)atomic_load_p(&elm->le_edata, dependent
+	    ? ATOMIC_RELAXED : ATOMIC_ACQUIRE);
+
+	return contents;
+#endif
+}
+
+JEMALLOC_ALWAYS_INLINE void
+rtree_contents_encode(rtree_contents_t contents, void **bits,
+    unsigned *additional) {
+#ifdef RTREE_LEAF_COMPACT
+	*bits = (void *)rtree_leaf_elm_bits_encode(contents);
+#else
+	*additional = (unsigned)contents.metadata.slab
+	    | ((unsigned)contents.metadata.is_head << 1)
+	    | ((unsigned)contents.metadata.state << RTREE_LEAF_STATE_SHIFT)
+	    | ((unsigned)contents.metadata.szind << (RTREE_LEAF_STATE_SHIFT +
+	    RTREE_LEAF_STATE_WIDTH));
+	*bits = contents.edata;
+#endif
+}
+
+JEMALLOC_ALWAYS_INLINE void
+rtree_leaf_elm_write_commit(tsdn_t *tsdn, rtree_t *rtree,
+    rtree_leaf_elm_t *elm, void *bits, unsigned additional) {
+#ifdef RTREE_LEAF_COMPACT
+	atomic_store_p(&elm->le_bits, bits, ATOMIC_RELEASE);
+#else
+	atomic_store_u(&elm->le_metadata, additional, ATOMIC_RELEASE);
+	/*
+	 * Write edata last, since the element is atomically considered valid
+	 * as soon as the edata field is non-NULL.
+	 */
+	atomic_store_p(&elm->le_edata, bits, ATOMIC_RELEASE);
+#endif
+}
+
+JEMALLOC_ALWAYS_INLINE void
+rtree_leaf_elm_write(tsdn_t *tsdn, rtree_t *rtree,
+    rtree_leaf_elm_t *elm, rtree_contents_t contents) {
+	assert((uintptr_t)contents.edata % EDATA_ALIGNMENT == 0);
+	void *bits;
+	unsigned additional;
+
+	rtree_contents_encode(contents, &bits, &additional);
+	rtree_leaf_elm_write_commit(tsdn, rtree, elm, bits, additional);
+}
+
+/* The state field can be updated independently (and more frequently). */
+JEMALLOC_ALWAYS_INLINE void
+rtree_leaf_elm_state_update(tsdn_t *tsdn, rtree_t *rtree,
+    rtree_leaf_elm_t *elm1, rtree_leaf_elm_t *elm2, extent_state_t state) {
+	assert(elm1 != NULL);
+#ifdef RTREE_LEAF_COMPACT
+	uintptr_t bits = rtree_leaf_elm_bits_read(tsdn, rtree, elm1,
+	    /* dependent */ true);
+	bits &= ~RTREE_LEAF_STATE_MASK;
+	bits |= state << RTREE_LEAF_STATE_SHIFT;
+	atomic_store_p(&elm1->le_bits, (void *)bits, ATOMIC_RELEASE);
+	if (elm2 != NULL) {
+		atomic_store_p(&elm2->le_bits, (void *)bits, ATOMIC_RELEASE);
+	}
+#else
+	unsigned bits = atomic_load_u(&elm1->le_metadata, ATOMIC_RELAXED);
+	bits &= ~RTREE_LEAF_STATE_MASK;
+	bits |= state << RTREE_LEAF_STATE_SHIFT;
+	atomic_store_u(&elm1->le_metadata, bits, ATOMIC_RELEASE);
+	if (elm2 != NULL) {
+		atomic_store_u(&elm2->le_metadata, bits, ATOMIC_RELEASE);
+	}
+#endif
+}
+
+/*
+ * Tries to look up the key in the L1 cache, returning false if there's a hit, or
+ * true if there's a miss.
+ * Key is allowed to be NULL; returns true in this case.
+ */
+JEMALLOC_ALWAYS_INLINE bool
+rtree_leaf_elm_lookup_fast(tsdn_t *tsdn, rtree_t *rtree, rtree_ctx_t *rtree_ctx,
+    uintptr_t key, rtree_leaf_elm_t **elm) {
+	size_t slot = rtree_cache_direct_map(key);
+	uintptr_t leafkey = rtree_leafkey(key);
+	assert(leafkey != RTREE_LEAFKEY_INVALID);
+
+	if (unlikely(rtree_ctx->cache[slot].leafkey != leafkey)) {
+		return true;
+	}
+
+	rtree_leaf_elm_t *leaf = rtree_ctx->cache[slot].leaf;
+	assert(leaf != NULL);
+	uintptr_t subkey = rtree_subkey(key, RTREE_HEIGHT-1);
+	*elm = &leaf[subkey];
+
+	return false;
+}
+
+JEMALLOC_ALWAYS_INLINE rtree_leaf_elm_t *
+rtree_leaf_elm_lookup(tsdn_t *tsdn, rtree_t *rtree, rtree_ctx_t *rtree_ctx,
+    uintptr_t key, bool dependent, bool init_missing) {
+	assert(key != 0);
+	assert(!dependent || !init_missing);
+
+	size_t slot = rtree_cache_direct_map(key);
+	uintptr_t leafkey = rtree_leafkey(key);
+	assert(leafkey != RTREE_LEAFKEY_INVALID);
+
+	/* Fast path: L1 direct mapped cache. */
+	if (likely(rtree_ctx->cache[slot].leafkey == leafkey)) {
+		rtree_leaf_elm_t *leaf = rtree_ctx->cache[slot].leaf;
+		assert(leaf != NULL);
+		uintptr_t subkey = rtree_subkey(key, RTREE_HEIGHT-1);
+		return &leaf[subkey];
+	}
+	/*
+	 * Search the L2 LRU cache.  On hit, swap the matching element into the
+	 * slot in L1 cache, and move the position in L2 up by 1.
+	 */
+#define RTREE_CACHE_CHECK_L2(i) do {					\
+	if (likely(rtree_ctx->l2_cache[i].leafkey == leafkey)) {	\
+		rtree_leaf_elm_t *leaf = rtree_ctx->l2_cache[i].leaf;	\
+		assert(leaf != NULL);					\
+		if (i > 0) {						\
+			/* Bubble up by one. */				\
+			rtree_ctx->l2_cache[i].leafkey =		\
+				rtree_ctx->l2_cache[i - 1].leafkey;	\
+			rtree_ctx->l2_cache[i].leaf =			\
+				rtree_ctx->l2_cache[i - 1].leaf;	\
+			rtree_ctx->l2_cache[i - 1].leafkey =		\
+			    rtree_ctx->cache[slot].leafkey;		\
+			rtree_ctx->l2_cache[i - 1].leaf =		\
+			    rtree_ctx->cache[slot].leaf;		\
+		} else {						\
+			rtree_ctx->l2_cache[0].leafkey =		\
+			    rtree_ctx->cache[slot].leafkey;		\
+			rtree_ctx->l2_cache[0].leaf =			\
+			    rtree_ctx->cache[slot].leaf;		\
+		}							\
+		rtree_ctx->cache[slot].leafkey = leafkey;		\
+		rtree_ctx->cache[slot].leaf = leaf;			\
+		uintptr_t subkey = rtree_subkey(key, RTREE_HEIGHT-1);	\
+		return &leaf[subkey];					\
+	}								\
+} while (0)
+	/* Check the first cache entry. */
+	RTREE_CACHE_CHECK_L2(0);
+	/* Search the remaining cache elements. */
+	for (unsigned i = 1; i < RTREE_CTX_NCACHE_L2; i++) {
+		RTREE_CACHE_CHECK_L2(i);
+	}
+#undef RTREE_CACHE_CHECK_L2
+
+	return rtree_leaf_elm_lookup_hard(tsdn, rtree, rtree_ctx, key,
+	    dependent, init_missing);
+}
+
+/*
+ * Returns true on lookup failure.
+ */
+static inline bool
+rtree_read_independent(tsdn_t *tsdn, rtree_t *rtree, rtree_ctx_t *rtree_ctx,
+    uintptr_t key, rtree_contents_t *r_contents) {
+	rtree_leaf_elm_t *elm = rtree_leaf_elm_lookup(tsdn, rtree, rtree_ctx,
+	    key, /* dependent */ false, /* init_missing */ false);
+	if (elm == NULL) {
+		return true;
+	}
+	*r_contents = rtree_leaf_elm_read(tsdn, rtree, elm,
+	    /* dependent */ false);
+	return false;
+}
+
+static inline rtree_contents_t
+rtree_read(tsdn_t *tsdn, rtree_t *rtree, rtree_ctx_t *rtree_ctx,
+    uintptr_t key) {
+	rtree_leaf_elm_t *elm = rtree_leaf_elm_lookup(tsdn, rtree, rtree_ctx,
+	    key, /* dependent */ true, /* init_missing */ false);
+	assert(elm != NULL);
+	return rtree_leaf_elm_read(tsdn, rtree, elm, /* dependent */ true);
+}
+
+static inline rtree_metadata_t
+rtree_metadata_read(tsdn_t *tsdn, rtree_t *rtree, rtree_ctx_t *rtree_ctx,
+    uintptr_t key) {
+	rtree_leaf_elm_t *elm = rtree_leaf_elm_lookup(tsdn, rtree, rtree_ctx,
+	    key, /* dependent */ true, /* init_missing */ false);
+	assert(elm != NULL);
+	return rtree_leaf_elm_read(tsdn, rtree, elm,
+	    /* dependent */ true).metadata;
+}
+
+/*
+ * Returns true when the request cannot be fulfilled by fastpath.
+ */
+static inline bool
+rtree_metadata_try_read_fast(tsdn_t *tsdn, rtree_t *rtree, rtree_ctx_t *rtree_ctx,
+    uintptr_t key, rtree_metadata_t *r_rtree_metadata) {
+	rtree_leaf_elm_t *elm;
+	/*
+	 * Should check the bool return value (lookup success or not) instead of
+	 * elm == NULL (which will result in an extra branch).  This is because
+	 * when the cache lookup succeeds, there will never be a NULL pointer
+	 * returned (which is unknown to the compiler).
+	 */
+	if (rtree_leaf_elm_lookup_fast(tsdn, rtree, rtree_ctx, key, &elm)) {
+		return true;
+	}
+	assert(elm != NULL);
+	*r_rtree_metadata = rtree_leaf_elm_read(tsdn, rtree, elm,
+	    /* dependent */ true).metadata;
+	return false;
+}
+
+JEMALLOC_ALWAYS_INLINE void
+rtree_write_range_impl(tsdn_t *tsdn, rtree_t *rtree, rtree_ctx_t *rtree_ctx,
+    uintptr_t base, uintptr_t end, rtree_contents_t contents, bool clearing) {
+	assert((base & PAGE_MASK) == 0 && (end & PAGE_MASK) == 0);
+	/*
+	 * Only used for emap_(de)register_interior, which implies the
+	 * boundaries have been registered already.  Therefore all the lookups
+	 * are dependent w/o init_missing, assuming the range spans across at
+	 * most 2 rtree leaf nodes (each covers 1 GiB of vaddr).
+	 */
+	void *bits;
+	unsigned additional;
+	rtree_contents_encode(contents, &bits, &additional);
+
+	rtree_leaf_elm_t *elm = NULL; /* Dead store. */
+	for (uintptr_t addr = base; addr <= end; addr += PAGE) {
+		if (addr == base ||
+		    (addr & ((ZU(1) << rtree_leaf_maskbits()) - 1)) == 0) {
+			elm = rtree_leaf_elm_lookup(tsdn, rtree, rtree_ctx, addr,
+			    /* dependent */ true, /* init_missing */ false);
+			assert(elm != NULL);
+		}
+		assert(elm == rtree_leaf_elm_lookup(tsdn, rtree, rtree_ctx, addr,
+		    /* dependent */ true, /* init_missing */ false));
+		assert(!clearing || rtree_leaf_elm_read(tsdn, rtree, elm,
+		    /* dependent */ true).edata != NULL);
+		rtree_leaf_elm_write_commit(tsdn, rtree, elm, bits, additional);
+		elm++;
+	}
+}
+
+JEMALLOC_ALWAYS_INLINE void
+rtree_write_range(tsdn_t *tsdn, rtree_t *rtree, rtree_ctx_t *rtree_ctx,
+    uintptr_t base, uintptr_t end, rtree_contents_t contents) {
+	rtree_write_range_impl(tsdn, rtree, rtree_ctx, base, end, contents,
+	    /* clearing */ false);
+}
+
+JEMALLOC_ALWAYS_INLINE bool
+rtree_write(tsdn_t *tsdn, rtree_t *rtree, rtree_ctx_t *rtree_ctx, uintptr_t key,
+    rtree_contents_t contents) {
+	rtree_leaf_elm_t *elm = rtree_leaf_elm_lookup(tsdn, rtree, rtree_ctx,
+	    key, /* dependent */ false, /* init_missing */ true);
+	if (elm == NULL) {
+		return true;
+	}
+
+	rtree_leaf_elm_write(tsdn, rtree, elm, contents);
+
+	return false;
+}
+
+static inline void
+rtree_clear(tsdn_t *tsdn, rtree_t *rtree, rtree_ctx_t *rtree_ctx,
+    uintptr_t key) {
+	rtree_leaf_elm_t *elm = rtree_leaf_elm_lookup(tsdn, rtree, rtree_ctx,
+	    key, /* dependent */ true, /* init_missing */ false);
+	assert(elm != NULL);
+	assert(rtree_leaf_elm_read(tsdn, rtree, elm,
+	    /* dependent */ true).edata != NULL);
+	rtree_contents_t contents;
+	contents.edata = NULL;
+	contents.metadata.szind = SC_NSIZES;
+	contents.metadata.slab = false;
+	contents.metadata.is_head = false;
+	contents.metadata.state = (extent_state_t)0;
+	rtree_leaf_elm_write(tsdn, rtree, elm, contents);
+}
+
+static inline void
+rtree_clear_range(tsdn_t *tsdn, rtree_t *rtree, rtree_ctx_t *rtree_ctx,
+    uintptr_t base, uintptr_t end) {
+	rtree_contents_t contents;
+	contents.edata = NULL;
+	contents.metadata.szind = SC_NSIZES;
+	contents.metadata.slab = false;
+	contents.metadata.is_head = false;
+	contents.metadata.state = (extent_state_t)0;
+	rtree_write_range_impl(tsdn, rtree, rtree_ctx, base, end, contents,
+	    /* clearing */ true);
+}
+
+#endif /* JEMALLOC_INTERNAL_RTREE_H */
diff --git a/deps/jemalloc/include/jemalloc/internal/rtree_tsd.h b/deps/jemalloc/include/jemalloc/internal/rtree_tsd.h
new file mode 100644
index 0000000..e45525c
--- /dev/null
+++ b/deps/jemalloc/include/jemalloc/internal/rtree_tsd.h
@@ -0,0 +1,62 @@
+#ifndef JEMALLOC_INTERNAL_RTREE_CTX_H
+#define JEMALLOC_INTERNAL_RTREE_CTX_H
+
+/*
+ * Number of leafkey/leaf pairs to cache in L1 and L2 level respectively.  Each
+ * entry supports an entire leaf, so the cache hit rate is typically high even
+ * with a small number of entries.  In rare cases extent activity will straddle
+ * the boundary between two leaf nodes.  Furthermore, an arena may use a
+ * combination of dss and mmap.  Note that as memory usage grows past the amount
+ * that this cache can directly cover, the cache will become less effective if
+ * locality of reference is low, but the consequence is merely cache misses
+ * while traversing the tree nodes.
+ *
+ * The L1 direct mapped cache offers consistent and low cost on cache hit.
+ * However collision could affect hit rate negatively.  This is resolved by
+ * combining with a L2 LRU cache, which requires linear search and re-ordering
+ * on access but suffers no collision.  Note that, the cache will itself suffer
+ * cache misses if made overly large, plus the cost of linear search in the LRU
+ * cache.
+ */
+#define RTREE_CTX_NCACHE 16
+#define RTREE_CTX_NCACHE_L2 8
+
+/* Needed for initialization only. */
+#define RTREE_LEAFKEY_INVALID ((uintptr_t)1)
+#define RTREE_CTX_CACHE_ELM_INVALID {RTREE_LEAFKEY_INVALID, NULL}
+
+#define RTREE_CTX_INIT_ELM_1 RTREE_CTX_CACHE_ELM_INVALID
+#define RTREE_CTX_INIT_ELM_2 RTREE_CTX_INIT_ELM_1, RTREE_CTX_INIT_ELM_1
+#define RTREE_CTX_INIT_ELM_4 RTREE_CTX_INIT_ELM_2, RTREE_CTX_INIT_ELM_2
+#define RTREE_CTX_INIT_ELM_8 RTREE_CTX_INIT_ELM_4, RTREE_CTX_INIT_ELM_4
+#define RTREE_CTX_INIT_ELM_16 RTREE_CTX_INIT_ELM_8, RTREE_CTX_INIT_ELM_8
+
+#define _RTREE_CTX_INIT_ELM_DATA(n) RTREE_CTX_INIT_ELM_##n
+#define RTREE_CTX_INIT_ELM_DATA(n) _RTREE_CTX_INIT_ELM_DATA(n)
+
+/*
+ * Static initializer (to invalidate the cache entries) is required because the
+ * free fastpath may access the rtree cache before a full tsd initialization.
+ */
+#define RTREE_CTX_INITIALIZER {{RTREE_CTX_INIT_ELM_DATA(RTREE_CTX_NCACHE)}, \
+			       {RTREE_CTX_INIT_ELM_DATA(RTREE_CTX_NCACHE_L2)}}
+
+typedef struct rtree_leaf_elm_s rtree_leaf_elm_t;
+
+typedef struct rtree_ctx_cache_elm_s rtree_ctx_cache_elm_t;
+struct rtree_ctx_cache_elm_s {
+	uintptr_t		leafkey;
+	rtree_leaf_elm_t	*leaf;
+};
+
+typedef struct rtree_ctx_s rtree_ctx_t;
+struct rtree_ctx_s {
+	/* Direct mapped cache. */
+	rtree_ctx_cache_elm_t	cache[RTREE_CTX_NCACHE];
+	/* L2 LRU cache. */
+	rtree_ctx_cache_elm_t	l2_cache[RTREE_CTX_NCACHE_L2];
+};
+
+void rtree_ctx_data_init(rtree_ctx_t *ctx);
+
+#endif /* JEMALLOC_INTERNAL_RTREE_CTX_H */
diff --git a/deps/jemalloc/include/jemalloc/internal/safety_check.h b/deps/jemalloc/include/jemalloc/internal/safety_check.h
new file mode 100644
index 0000000..f1a74f1
--- /dev/null
+++ b/deps/jemalloc/include/jemalloc/internal/safety_check.h
@@ -0,0 +1,31 @@
+#ifndef JEMALLOC_INTERNAL_SAFETY_CHECK_H
+#define JEMALLOC_INTERNAL_SAFETY_CHECK_H
+
+void safety_check_fail_sized_dealloc(bool current_dealloc, const void *ptr,
+    size_t true_size, size_t input_size);
+void safety_check_fail(const char *format, ...);
+
+typedef void (*safety_check_abort_hook_t)(const char *message);
+
+/* Can set to NULL for a default. */
+void safety_check_set_abort(safety_check_abort_hook_t abort_fn);
+
+JEMALLOC_ALWAYS_INLINE void
+safety_check_set_redzone(void *ptr, size_t usize, size_t bumped_usize) {
+	assert(usize < bumped_usize);
+	for (size_t i = usize; i < bumped_usize && i < usize + 32; ++i) {
+		*((unsigned char *)ptr + i) = 0xBC;
+	}
+}
+
+JEMALLOC_ALWAYS_INLINE void
+safety_check_verify_redzone(const void *ptr, size_t usize, size_t bumped_usize)
+{
+	for (size_t i = usize; i < bumped_usize && i < usize + 32; ++i) {
+		if (unlikely(*((unsigned char *)ptr + i) != 0xBC)) {
+			safety_check_fail("Use after free error\n");
+		}
+	}
+}
+
+#endif /*JEMALLOC_INTERNAL_SAFETY_CHECK_H */
diff --git a/deps/jemalloc/include/jemalloc/internal/san.h b/deps/jemalloc/include/jemalloc/internal/san.h
new file mode 100644
index 0000000..8813d6b
--- /dev/null
+++ b/deps/jemalloc/include/jemalloc/internal/san.h
@@ -0,0 +1,191 @@
+#ifndef JEMALLOC_INTERNAL_GUARD_H
+#define JEMALLOC_INTERNAL_GUARD_H
+
+#include "jemalloc/internal/ehooks.h"
+#include "jemalloc/internal/emap.h"
+
+#define SAN_PAGE_GUARD PAGE
+#define SAN_PAGE_GUARDS_SIZE (SAN_PAGE_GUARD * 2)
+
+#define SAN_GUARD_LARGE_EVERY_N_EXTENTS_DEFAULT 0
+#define SAN_GUARD_SMALL_EVERY_N_EXTENTS_DEFAULT 0
+
+#define SAN_LG_UAF_ALIGN_DEFAULT (-1)
+#define SAN_CACHE_BIN_NONFAST_MASK_DEFAULT (uintptr_t)(-1)
+
+static const uintptr_t uaf_detect_junk = (uintptr_t)0x5b5b5b5b5b5b5b5bULL;
+
+/* 0 means disabled, i.e. never guarded. */
+extern size_t opt_san_guard_large;
+extern size_t opt_san_guard_small;
+/* -1 means disabled, i.e. never check for use-after-free. */
+extern ssize_t opt_lg_san_uaf_align;
+
+void san_guard_pages(tsdn_t *tsdn, ehooks_t *ehooks, edata_t *edata,
+    emap_t *emap, bool left, bool right, bool remap);
+void san_unguard_pages(tsdn_t *tsdn, ehooks_t *ehooks, edata_t *edata,
+    emap_t *emap, bool left, bool right);
+/*
+ * Unguard the extent, but don't modify emap boundaries. Must be called on an
+ * extent that has been erased from emap and shouldn't be placed back.
+ */
+void san_unguard_pages_pre_destroy(tsdn_t *tsdn, ehooks_t *ehooks,
+    edata_t *edata, emap_t *emap);
+void san_check_stashed_ptrs(void **ptrs, size_t nstashed, size_t usize);
+
+void tsd_san_init(tsd_t *tsd);
+void san_init(ssize_t lg_san_uaf_align);
+
+static inline void
+san_guard_pages_two_sided(tsdn_t *tsdn, ehooks_t *ehooks, edata_t *edata,
+    emap_t *emap, bool remap) {
+	san_guard_pages(tsdn, ehooks, edata, emap, true, true, remap);
+}
+
+static inline void
+san_unguard_pages_two_sided(tsdn_t *tsdn, ehooks_t *ehooks, edata_t *edata,
+    emap_t *emap) {
+	san_unguard_pages(tsdn, ehooks, edata, emap, true, true);
+}
+
+static inline size_t
+san_two_side_unguarded_sz(size_t size) {
+	assert(size % PAGE == 0);
+	assert(size >= SAN_PAGE_GUARDS_SIZE);
+	return size - SAN_PAGE_GUARDS_SIZE;
+}
+
+static inline size_t
+san_two_side_guarded_sz(size_t size) {
+	assert(size % PAGE == 0);
+	return size + SAN_PAGE_GUARDS_SIZE;
+}
+
+static inline size_t
+san_one_side_unguarded_sz(size_t size) {
+	assert(size % PAGE == 0);
+	assert(size >= SAN_PAGE_GUARD);
+	return size - SAN_PAGE_GUARD;
+}
+
+static inline size_t
+san_one_side_guarded_sz(size_t size) {
+	assert(size % PAGE == 0);
+	return size + SAN_PAGE_GUARD;
+}
+
+static inline bool
+san_guard_enabled(void) {
+	return (opt_san_guard_large != 0 || opt_san_guard_small != 0);
+}
+
+static inline bool
+san_large_extent_decide_guard(tsdn_t *tsdn, ehooks_t *ehooks, size_t size,
+    size_t alignment) {
+	if (opt_san_guard_large == 0 || ehooks_guard_will_fail(ehooks) ||
+	    tsdn_null(tsdn)) {
+		return false;
+	}
+
+	tsd_t *tsd = tsdn_tsd(tsdn);
+	uint64_t n = tsd_san_extents_until_guard_large_get(tsd);
+	assert(n >= 1);
+	if (n > 1) {
+		/*
+		 * Subtract conditionally because the guard may not happen due
+		 * to alignment or size restriction below.
+		 */
+		*tsd_san_extents_until_guard_largep_get(tsd) = n - 1;
+	}
+
+	if (n == 1 && (alignment <= PAGE) &&
+	    (san_two_side_guarded_sz(size) <= SC_LARGE_MAXCLASS)) {
+		*tsd_san_extents_until_guard_largep_get(tsd) =
+		    opt_san_guard_large;
+		return true;
+	} else {
+		assert(tsd_san_extents_until_guard_large_get(tsd) >= 1);
+		return false;
+	}
+}
+
+static inline bool
+san_slab_extent_decide_guard(tsdn_t *tsdn, ehooks_t *ehooks) {
+	if (opt_san_guard_small == 0 || ehooks_guard_will_fail(ehooks) ||
+	    tsdn_null(tsdn)) {
+		return false;
+	}
+
+	tsd_t *tsd = tsdn_tsd(tsdn);
+	uint64_t n = tsd_san_extents_until_guard_small_get(tsd);
+	assert(n >= 1);
+	if (n == 1) {
+		*tsd_san_extents_until_guard_smallp_get(tsd) =
+		    opt_san_guard_small;
+		return true;
+	} else {
+		*tsd_san_extents_until_guard_smallp_get(tsd) = n - 1;
+		assert(tsd_san_extents_until_guard_small_get(tsd) >= 1);
+		return false;
+	}
+}
+
+static inline void
+san_junk_ptr_locations(void *ptr, size_t usize, void **first, void **mid,
+    void **last) {
+	size_t ptr_sz = sizeof(void *);
+
+	*first = ptr;
+
+	*mid = (void *)((uintptr_t)ptr + ((usize >> 1) & ~(ptr_sz - 1)));
+	assert(*first != *mid || usize == ptr_sz);
+	assert((uintptr_t)*first <= (uintptr_t)*mid);
+
+	/*
+	 * When usize > 32K, the gap between requested_size and usize might be
+	 * greater than 4K -- this means the last write may access an
+	 * likely-untouched page (default settings w/ 4K pages).  However by
+	 * default the tcache only goes up to the 32K size class, and is usually
+	 * tuned lower instead of higher, which makes it less of a concern.
+	 */
+	*last = (void *)((uintptr_t)ptr + usize - sizeof(uaf_detect_junk));
+	assert(*first != *last || usize == ptr_sz);
+	assert(*mid != *last || usize <= ptr_sz * 2);
+	assert((uintptr_t)*mid <= (uintptr_t)*last);
+}
+
+static inline bool
+san_junk_ptr_should_slow(void) {
+	/*
+	 * The latter condition (pointer size greater than the min size class)
+	 * is not expected -- fall back to the slow path for simplicity.
+	 */
+	return config_debug || (LG_SIZEOF_PTR > SC_LG_TINY_MIN);
+}
+
+static inline void
+san_junk_ptr(void *ptr, size_t usize) {
+	if (san_junk_ptr_should_slow()) {
+		memset(ptr, (char)uaf_detect_junk, usize);
+		return;
+	}
+
+	void *first, *mid, *last;
+	san_junk_ptr_locations(ptr, usize, &first, &mid, &last);
+	*(uintptr_t *)first = uaf_detect_junk;
+	*(uintptr_t *)mid = uaf_detect_junk;
+	*(uintptr_t *)last = uaf_detect_junk;
+}
+
+static inline bool
+san_uaf_detection_enabled(void) {
+	bool ret = config_uaf_detection && (opt_lg_san_uaf_align != -1);
+	if (config_uaf_detection && ret) {
+		assert(san_cache_bin_nonfast_mask == ((uintptr_t)1 <<
+		    opt_lg_san_uaf_align) - 1);
+	}
+
+	return ret;
+}
+
+#endif /* JEMALLOC_INTERNAL_GUARD_H */
diff --git a/deps/jemalloc/include/jemalloc/internal/san_bump.h b/deps/jemalloc/include/jemalloc/internal/san_bump.h
new file mode 100644
index 0000000..8ec4a71
--- /dev/null
+++ b/deps/jemalloc/include/jemalloc/internal/san_bump.h
@@ -0,0 +1,52 @@
+#ifndef JEMALLOC_INTERNAL_SAN_BUMP_H
+#define JEMALLOC_INTERNAL_SAN_BUMP_H
+
+#include "jemalloc/internal/edata.h"
+#include "jemalloc/internal/exp_grow.h"
+#include "jemalloc/internal/mutex.h"
+
+#define SBA_RETAINED_ALLOC_SIZE ((size_t)4 << 20)
+
+extern bool opt_retain;
+
+typedef struct ehooks_s ehooks_t;
+typedef struct pac_s pac_t;
+
+typedef struct san_bump_alloc_s san_bump_alloc_t;
+struct san_bump_alloc_s {
+	malloc_mutex_t mtx;
+
+	edata_t *curr_reg;
+};
+
+static inline bool
+san_bump_enabled() {
+	/*
+	 * We enable san_bump allocator only when it's possible to break up a
+	 * mapping and unmap a part of it (maps_coalesce). This is needed to
+	 * ensure the arena destruction process can destroy all retained guarded
+	 * extents one by one and to unmap a trailing part of a retained guarded
+	 * region when it's too small to fit a pending allocation.
+	 * opt_retain is required, because this allocator retains a large
+	 * virtual memory mapping and returns smaller parts of it.
+	 */
+	return maps_coalesce && opt_retain;
+}
+
+static inline bool
+san_bump_alloc_init(san_bump_alloc_t* sba) {
+	bool err = malloc_mutex_init(&sba->mtx, "sanitizer_bump_allocator",
+	    WITNESS_RANK_SAN_BUMP_ALLOC, malloc_mutex_rank_exclusive);
+	if (err) {
+		return true;
+	}
+	sba->curr_reg = NULL;
+
+	return false;
+}
+
+edata_t *
+san_bump_alloc(tsdn_t *tsdn, san_bump_alloc_t* sba, pac_t *pac, ehooks_t *ehooks,
+    size_t size, bool zero);
+
+#endif /* JEMALLOC_INTERNAL_SAN_BUMP_H */
diff --git a/deps/jemalloc/include/jemalloc/internal/sc.h b/deps/jemalloc/include/jemalloc/internal/sc.h
new file mode 100644
index 0000000..9bab347
--- /dev/null
+++ b/deps/jemalloc/include/jemalloc/internal/sc.h
@@ -0,0 +1,357 @@
+#ifndef JEMALLOC_INTERNAL_SC_H
+#define JEMALLOC_INTERNAL_SC_H
+
+#include "jemalloc/internal/jemalloc_internal_types.h"
+
+/*
+ * Size class computations:
+ *
+ * These are a little tricky; we'll first start by describing how things
+ * generally work, and then describe some of the details.
+ *
+ * Ignore the first few size classes for a moment. We can then split all the
+ * remaining size classes into groups. The size classes in a group are spaced
+ * such that they cover allocation request sizes in a power-of-2 range. The
+ * power of two is called the base of the group, and the size classes in it
+ * satisfy allocations in the half-open range (base, base * 2]. There are
+ * SC_NGROUP size classes in each group, equally spaced in the range, so that
+ * each one covers allocations for base / SC_NGROUP possible allocation sizes.
+ * We call that value (base / SC_NGROUP) the delta of the group. Each size class
+ * is delta larger than the one before it (including the initial size class in a
+ * group, which is delta larger than base, the largest size class in the
+ * previous group).
+ * To make the math all work out nicely, we require that SC_NGROUP is a power of
+ * two, and define it in terms of SC_LG_NGROUP. We'll often talk in terms of
+ * lg_base and lg_delta. For each of these groups then, we have that
+ * lg_delta == lg_base - SC_LG_NGROUP.
+ * The size classes in a group with a given lg_base and lg_delta (which, recall,
+ * can be computed from lg_base for these groups) are therefore:
+ *   base + 1 * delta
+ *     which covers allocations in (base, base + 1 * delta]
+ *   base + 2 * delta
+ *     which covers allocations in (base + 1 * delta, base + 2 * delta].
+ *   base + 3 * delta
+ *     which covers allocations in (base + 2 * delta, base + 3 * delta].
+ *   ...
+ *   base + SC_NGROUP * delta ( == 2 * base)
+ *     which covers allocations in (base + (SC_NGROUP - 1) * delta, 2 * base].
+ * (Note that currently SC_NGROUP is always 4, so the "..." is empty in
+ * practice.)
+ * Note that the last size class in the group is the next power of two (after
+ * base), so that we've set up the induction correctly for the next group's
+ * selection of delta.
+ *
+ * Now, let's start considering the first few size classes. Two extra constants
+ * come into play here: LG_QUANTUM and SC_LG_TINY_MIN. LG_QUANTUM ensures
+ * correct platform alignment; all objects of size (1 << LG_QUANTUM) or larger
+ * are at least (1 << LG_QUANTUM) aligned; this can be used to ensure that we
+ * never return improperly aligned memory, by making (1 << LG_QUANTUM) equal the
+ * highest required alignment of a platform. For allocation sizes smaller than
+ * (1 << LG_QUANTUM) though, we can be more relaxed (since we don't support
+ * platforms with types with alignment larger than their size). To allow such
+ * allocations (without wasting space unnecessarily), we introduce tiny size
+ * classes; one per power of two, up until we hit the quantum size. There are
+ * therefore LG_QUANTUM - SC_LG_TINY_MIN such size classes.
+ *
+ * Next, we have a size class of size (1 << LG_QUANTUM).  This can't be the
+ * start of a group in the sense we described above (covering a power of two
+ * range) since, if we divided into it to pick a value of delta, we'd get a
+ * delta smaller than (1 << LG_QUANTUM) for sizes >= (1 << LG_QUANTUM), which
+ * is against the rules.
+ *
+ * The first base we can divide by SC_NGROUP while still being at least
+ * (1 << LG_QUANTUM) is SC_NGROUP * (1 << LG_QUANTUM). We can get there by
+ * having SC_NGROUP size classes, spaced (1 << LG_QUANTUM) apart. These size
+ * classes are:
+ *   1 * (1 << LG_QUANTUM)
+ *   2 * (1 << LG_QUANTUM)
+ *   3 * (1 << LG_QUANTUM)
+ *   ... (although, as above, this "..." is empty in practice)
+ *   SC_NGROUP * (1 << LG_QUANTUM).
+ *
+ * There are SC_NGROUP of these size classes, so we can regard it as a sort of
+ * pseudo-group, even though it spans multiple powers of 2, is divided
+ * differently, and both starts and ends on a power of 2 (as opposed to just
+ * ending). SC_NGROUP is itself a power of two, so the first group after the
+ * pseudo-group has the power-of-two base SC_NGROUP * (1 << LG_QUANTUM), for a
+ * lg_base of LG_QUANTUM + SC_LG_NGROUP. We can divide this base into SC_NGROUP
+ * sizes without violating our LG_QUANTUM requirements, so we can safely set
+ * lg_delta = lg_base - SC_LG_GROUP (== LG_QUANTUM).
+ *
+ * So, in order, the size classes are:
+ *
+ * Tiny size classes:
+ * - Count: LG_QUANTUM - SC_LG_TINY_MIN.
+ * - Sizes:
+ *     1 << SC_LG_TINY_MIN
+ *     1 << (SC_LG_TINY_MIN + 1)
+ *     1 << (SC_LG_TINY_MIN + 2)
+ *     ...
+ *     1 << (LG_QUANTUM - 1)
+ *
+ * Initial pseudo-group:
+ * - Count: SC_NGROUP
+ * - Sizes:
+ *     1 * (1 << LG_QUANTUM)
+ *     2 * (1 << LG_QUANTUM)
+ *     3 * (1 << LG_QUANTUM)
+ *     ...
+ *     SC_NGROUP * (1 << LG_QUANTUM)
+ *
+ * Regular group 0:
+ * - Count: SC_NGROUP
+ * - Sizes:
+ *   (relative to lg_base of LG_QUANTUM + SC_LG_NGROUP and lg_delta of
+ *   lg_base - SC_LG_NGROUP)
+ *     (1 << lg_base) + 1 * (1 << lg_delta)
+ *     (1 << lg_base) + 2 * (1 << lg_delta)
+ *     (1 << lg_base) + 3 * (1 << lg_delta)
+ *     ...
+ *     (1 << lg_base) + SC_NGROUP * (1 << lg_delta) [ == (1 << (lg_base + 1)) ]
+ *
+ * Regular group 1:
+ * - Count: SC_NGROUP
+ * - Sizes:
+ *   (relative to lg_base of LG_QUANTUM + SC_LG_NGROUP + 1 and lg_delta of
+ *   lg_base - SC_LG_NGROUP)
+ *     (1 << lg_base) + 1 * (1 << lg_delta)
+ *     (1 << lg_base) + 2 * (1 << lg_delta)
+ *     (1 << lg_base) + 3 * (1 << lg_delta)
+ *     ...
+ *     (1 << lg_base) + SC_NGROUP * (1 << lg_delta) [ == (1 << (lg_base + 1)) ]
+ *
+ * ...
+ *
+ * Regular group N:
+ * - Count: SC_NGROUP
+ * - Sizes:
+ *   (relative to lg_base of LG_QUANTUM + SC_LG_NGROUP + N and lg_delta of
+ *   lg_base - SC_LG_NGROUP)
+ *     (1 << lg_base) + 1 * (1 << lg_delta)
+ *     (1 << lg_base) + 2 * (1 << lg_delta)
+ *     (1 << lg_base) + 3 * (1 << lg_delta)
+ *     ...
+ *     (1 << lg_base) + SC_NGROUP * (1 << lg_delta) [ == (1 << (lg_base + 1)) ]
+ *
+ *
+ * Representation of metadata:
+ * To make the math easy, we'll mostly work in lg quantities. We record lg_base,
+ * lg_delta, and ndelta (i.e. number of deltas above the base) on a
+ * per-size-class basis, and maintain the invariant that, across all size
+ * classes, size == (1 << lg_base) + ndelta * (1 << lg_delta).
+ *
+ * For regular groups (i.e. those with lg_base >= LG_QUANTUM + SC_LG_NGROUP),
+ * lg_delta is lg_base - SC_LG_NGROUP, and ndelta goes from 1 to SC_NGROUP.
+ *
+ * For the initial tiny size classes (if any), lg_base is lg(size class size).
+ * lg_delta is lg_base for the first size class, and lg_base - 1 for all
+ * subsequent ones. ndelta is always 0.
+ *
+ * For the pseudo-group, if there are no tiny size classes, then we set
+ * lg_base == LG_QUANTUM, lg_delta == LG_QUANTUM, and have ndelta range from 0
+ * to SC_NGROUP - 1. (Note that delta == base, so base + (SC_NGROUP - 1) * delta
+ * is just SC_NGROUP * base, or (1 << (SC_LG_NGROUP + LG_QUANTUM)), so we do
+ * indeed get a power of two that way). If there *are* tiny size classes, then
+ * the first size class needs to have lg_delta relative to the largest tiny size
+ * class. We therefore set lg_base == LG_QUANTUM - 1,
+ * lg_delta == LG_QUANTUM - 1, and ndelta == 1, keeping the rest of the
+ * pseudo-group the same.
+ *
+ *
+ * Other terminology:
+ * "Small" size classes mean those that are allocated out of bins, which is the
+ * same as those that are slab allocated.
+ * "Large" size classes are those that are not small. The cutoff for counting as
+ * large is page size * group size.
+ */
+
+/*
+ * Size class N + (1 << SC_LG_NGROUP) twice the size of size class N.
+ */
+#define SC_LG_NGROUP 2
+#define SC_LG_TINY_MIN 3
+
+#if SC_LG_TINY_MIN == 0
+/* The div module doesn't support division by 1, which this would require. */
+#error "Unsupported LG_TINY_MIN"
+#endif
+
+/*
+ * The definitions below are all determined by the above settings and system
+ * characteristics.
+ */
+#define SC_NGROUP (1ULL << SC_LG_NGROUP)
+#define SC_PTR_BITS ((1ULL << LG_SIZEOF_PTR) * 8)
+#define SC_NTINY (LG_QUANTUM - SC_LG_TINY_MIN)
+#define SC_LG_TINY_MAXCLASS (LG_QUANTUM > SC_LG_TINY_MIN ? LG_QUANTUM - 1 : -1)
+#define SC_NPSEUDO SC_NGROUP
+#define SC_LG_FIRST_REGULAR_BASE (LG_QUANTUM + SC_LG_NGROUP)
+/*
+ * We cap allocations to be less than 2 ** (ptr_bits - 1), so the highest base
+ * we need is 2 ** (ptr_bits - 2). (This also means that the last group is 1
+ * size class shorter than the others).
+ * We could probably save some space in arenas by capping this at LG_VADDR size.
+ */
+#define SC_LG_BASE_MAX (SC_PTR_BITS - 2)
+#define SC_NREGULAR (SC_NGROUP * 					\
+    (SC_LG_BASE_MAX - SC_LG_FIRST_REGULAR_BASE + 1) - 1)
+#define SC_NSIZES (SC_NTINY + SC_NPSEUDO + SC_NREGULAR)
+
+/*
+ * The number of size classes that are a multiple of the page size.
+ *
+ * Here are the first few bases that have a page-sized SC.
+ *
+ *      lg(base) |     base | highest SC | page-multiple SCs
+ * --------------|------------------------------------------
+ *   LG_PAGE - 1 | PAGE / 2 |       PAGE | 1
+ *       LG_PAGE |     PAGE |   2 * PAGE | 1
+ *   LG_PAGE + 1 | 2 * PAGE |   4 * PAGE | 2
+ *   LG_PAGE + 2 | 4 * PAGE |   8 * PAGE | 4
+ *
+ * The number of page-multiple SCs continues to grow in powers of two, up until
+ * lg_delta == lg_page, which corresponds to setting lg_base to lg_page +
+ * SC_LG_NGROUP.  So, then, the number of size classes that are multiples of the
+ * page size whose lg_delta is less than the page size are
+ * is 1 + (2**0 + 2**1 + ... + 2**(lg_ngroup - 1) == 2**lg_ngroup.
+ *
+ * For each base with lg_base in [lg_page + lg_ngroup, lg_base_max), there are
+ * NGROUP page-sized size classes, and when lg_base == lg_base_max, there are
+ * NGROUP - 1.
+ *
+ * This gives us the quantity we seek.
+ */
+#define SC_NPSIZES (							\
+    SC_NGROUP								\
+    + (SC_LG_BASE_MAX - (LG_PAGE + SC_LG_NGROUP)) * SC_NGROUP		\
+    + SC_NGROUP - 1)
+
+/*
+ * We declare a size class is binnable if size < page size * group. Or, in other
+ * words, lg(size) < lg(page size) + lg(group size).
+ */
+#define SC_NBINS (							\
+    /* Sub-regular size classes. */					\
+    SC_NTINY + SC_NPSEUDO						\
+    /* Groups with lg_regular_min_base <= lg_base <= lg_base_max */	\
+    + SC_NGROUP * (LG_PAGE + SC_LG_NGROUP - SC_LG_FIRST_REGULAR_BASE)	\
+    /* Last SC of the last group hits the bound exactly; exclude it. */	\
+    - 1)
+
+/*
+ * The size2index_tab lookup table uses uint8_t to encode each bin index, so we
+ * cannot support more than 256 small size classes.
+ */
+#if (SC_NBINS > 256)
+#  error "Too many small size classes"
+#endif
+
+/* The largest size class in the lookup table, and its binary log. */
+#define SC_LG_MAX_LOOKUP 12
+#define SC_LOOKUP_MAXCLASS (1 << SC_LG_MAX_LOOKUP)
+
+/* Internal, only used for the definition of SC_SMALL_MAXCLASS. */
+#define SC_SMALL_MAX_BASE (1 << (LG_PAGE + SC_LG_NGROUP - 1))
+#define SC_SMALL_MAX_DELTA (1 << (LG_PAGE - 1))
+
+/* The largest size class allocated out of a slab. */
+#define SC_SMALL_MAXCLASS (SC_SMALL_MAX_BASE				\
+    + (SC_NGROUP - 1) * SC_SMALL_MAX_DELTA)
+
+/* The fastpath assumes all lookup-able sizes are small. */
+#if (SC_SMALL_MAXCLASS < SC_LOOKUP_MAXCLASS)
+#  error "Lookup table sizes must be small"
+#endif
+
+/* The smallest size class not allocated out of a slab. */
+#define SC_LARGE_MINCLASS ((size_t)1ULL << (LG_PAGE + SC_LG_NGROUP))
+#define SC_LG_LARGE_MINCLASS (LG_PAGE + SC_LG_NGROUP)
+
+/* Internal; only used for the definition of SC_LARGE_MAXCLASS. */
+#define SC_MAX_BASE ((size_t)1 << (SC_PTR_BITS - 2))
+#define SC_MAX_DELTA ((size_t)1 << (SC_PTR_BITS - 2 - SC_LG_NGROUP))
+
+/* The largest size class supported. */
+#define SC_LARGE_MAXCLASS (SC_MAX_BASE + (SC_NGROUP - 1) * SC_MAX_DELTA)
+
+/* Maximum number of regions in one slab. */
+#ifndef CONFIG_LG_SLAB_MAXREGS
+#  define SC_LG_SLAB_MAXREGS (LG_PAGE - SC_LG_TINY_MIN)
+#else
+#  if CONFIG_LG_SLAB_MAXREGS < (LG_PAGE - SC_LG_TINY_MIN)
+#    error "Unsupported SC_LG_SLAB_MAXREGS"
+#  else
+#    define SC_LG_SLAB_MAXREGS CONFIG_LG_SLAB_MAXREGS
+#  endif
+#endif
+
+#define SC_SLAB_MAXREGS (1U << SC_LG_SLAB_MAXREGS)
+
+typedef struct sc_s sc_t;
+struct sc_s {
+	/* Size class index, or -1 if not a valid size class. */
+	int index;
+	/* Lg group base size (no deltas added). */
+	int lg_base;
+	/* Lg delta to previous size class. */
+	int lg_delta;
+	/* Delta multiplier.  size == 1<<lg_base + ndelta<<lg_delta */
+	int ndelta;
+	/*
+	 * True if the size class is a multiple of the page size, false
+	 * otherwise.
+	 */
+	bool psz;
+	/*
+	 * True if the size class is a small, bin, size class. False otherwise.
+	 */
+	bool bin;
+	/* The slab page count if a small bin size class, 0 otherwise. */
+	int pgs;
+	/* Same as lg_delta if a lookup table size class, 0 otherwise. */
+	int lg_delta_lookup;
+};
+
+typedef struct sc_data_s sc_data_t;
+struct sc_data_s {
+	/* Number of tiny size classes. */
+	unsigned ntiny;
+	/* Number of bins supported by the lookup table. */
+	int nlbins;
+	/* Number of small size class bins. */
+	int nbins;
+	/* Number of size classes. */
+	int nsizes;
+	/* Number of bits required to store NSIZES. */
+	int lg_ceil_nsizes;
+	/* Number of size classes that are a multiple of (1U << LG_PAGE). */
+	unsigned npsizes;
+	/* Lg of maximum tiny size class (or -1, if none). */
+	int lg_tiny_maxclass;
+	/* Maximum size class included in lookup table. */
+	size_t lookup_maxclass;
+	/* Maximum small size class. */
+	size_t small_maxclass;
+	/* Lg of minimum large size class. */
+	int lg_large_minclass;
+	/* The minimum large size class. */
+	size_t large_minclass;
+	/* Maximum (large) size class. */
+	size_t large_maxclass;
+	/* True if the sc_data_t has been initialized (for debugging only). */
+	bool initialized;
+
+	sc_t sc[SC_NSIZES];
+};
+
+size_t reg_size_compute(int lg_base, int lg_delta, int ndelta);
+void sc_data_init(sc_data_t *data);
+/*
+ * Updates slab sizes in [begin, end] to be pgs pages in length, if possible.
+ * Otherwise, does its best to accommodate the request.
+ */
+void sc_data_update_slab_size(sc_data_t *data, size_t begin, size_t end,
+    int pgs);
+void sc_boot(sc_data_t *data);
+
+#endif /* JEMALLOC_INTERNAL_SC_H */
diff --git a/deps/jemalloc/include/jemalloc/internal/sec.h b/deps/jemalloc/include/jemalloc/internal/sec.h
new file mode 100644
index 0000000..fa86338
--- /dev/null
+++ b/deps/jemalloc/include/jemalloc/internal/sec.h
@@ -0,0 +1,120 @@
+#ifndef JEMALLOC_INTERNAL_SEC_H
+#define JEMALLOC_INTERNAL_SEC_H
+
+#include "jemalloc/internal/atomic.h"
+#include "jemalloc/internal/pai.h"
+
+/*
+ * Small extent cache.
+ *
+ * This includes some utilities to cache small extents.  We have a per-pszind
+ * bin with its own list of extents of that size.  We don't try to do any
+ * coalescing of extents (since it would in general require cross-shard locks or
+ * knowledge of the underlying PAI implementation).
+ */
+
+/*
+ * For now, this is just one field; eventually, we'll probably want to get more
+ * fine-grained data out (like per-size class statistics).
+ */
+typedef struct sec_stats_s sec_stats_t;
+struct sec_stats_s {
+	/* Sum of bytes_cur across all shards. */
+	size_t bytes;
+};
+
+static inline void
+sec_stats_accum(sec_stats_t *dst, sec_stats_t *src) {
+	dst->bytes += src->bytes;
+}
+
+/* A collections of free extents, all of the same size. */
+typedef struct sec_bin_s sec_bin_t;
+struct sec_bin_s {
+	/*
+	 * When we fail to fulfill an allocation, we do a batch-alloc on the
+	 * underlying allocator to fill extra items, as well.  We drop the SEC
+	 * lock while doing so, to allow operations on other bins to succeed.
+	 * That introduces the possibility of other threads also trying to
+	 * allocate out of this bin, failing, and also going to the backing
+	 * allocator.  To avoid a thundering herd problem in which lots of
+	 * threads do batch allocs and overfill this bin as a result, we only
+	 * allow one batch allocation at a time for a bin.  This bool tracks
+	 * whether or not some thread is already batch allocating.
+	 *
+	 * Eventually, the right answer may be a smarter sharding policy for the
+	 * bins (e.g. a mutex per bin, which would also be more scalable
+	 * generally; the batch-allocating thread could hold it while
+	 * batch-allocating).
+	 */
+	bool being_batch_filled;
+
+	/*
+	 * Number of bytes in this particular bin (as opposed to the
+	 * sec_shard_t's bytes_cur.  This isn't user visible or reported in
+	 * stats; rather, it allows us to quickly determine the change in the
+	 * centralized counter when flushing.
+	 */
+	size_t bytes_cur;
+	edata_list_active_t freelist;
+};
+
+typedef struct sec_shard_s sec_shard_t;
+struct sec_shard_s {
+	/*
+	 * We don't keep per-bin mutexes, even though that would allow more
+	 * sharding; this allows global cache-eviction, which in turn allows for
+	 * better balancing across free lists.
+	 */
+	malloc_mutex_t mtx;
+	/*
+	 * A SEC may need to be shut down (i.e. flushed of its contents and
+	 * prevented from further caching).  To avoid tricky synchronization
+	 * issues, we just track enabled-status in each shard, guarded by a
+	 * mutex.  In practice, this is only ever checked during brief races,
+	 * since the arena-level atomic boolean tracking HPA enabled-ness means
+	 * that we won't go down these pathways very often after custom extent
+	 * hooks are installed.
+	 */
+	bool enabled;
+	sec_bin_t *bins;
+	/* Number of bytes in all bins in the shard. */
+	size_t bytes_cur;
+	/* The next pszind to flush in the flush-some pathways. */
+	pszind_t to_flush_next;
+};
+
+typedef struct sec_s sec_t;
+struct sec_s {
+	pai_t pai;
+	pai_t *fallback;
+
+	sec_opts_t opts;
+	sec_shard_t *shards;
+	pszind_t npsizes;
+};
+
+bool sec_init(tsdn_t *tsdn, sec_t *sec, base_t *base, pai_t *fallback,
+    const sec_opts_t *opts);
+void sec_flush(tsdn_t *tsdn, sec_t *sec);
+void sec_disable(tsdn_t *tsdn, sec_t *sec);
+
+/*
+ * Morally, these two stats methods probably ought to be a single one (and the
+ * mutex_prof_data ought to live in the sec_stats_t.  But splitting them apart
+ * lets them fit easily into the pa_shard stats framework (which also has this
+ * split), which simplifies the stats management.
+ */
+void sec_stats_merge(tsdn_t *tsdn, sec_t *sec, sec_stats_t *stats);
+void sec_mutex_stats_read(tsdn_t *tsdn, sec_t *sec,
+    mutex_prof_data_t *mutex_prof_data);
+
+/*
+ * We use the arena lock ordering; these are acquired in phase 2 of forking, but
+ * should be acquired before the underlying allocator mutexes.
+ */
+void sec_prefork2(tsdn_t *tsdn, sec_t *sec);
+void sec_postfork_parent(tsdn_t *tsdn, sec_t *sec);
+void sec_postfork_child(tsdn_t *tsdn, sec_t *sec);
+
+#endif /* JEMALLOC_INTERNAL_SEC_H */
diff --git a/deps/jemalloc/include/jemalloc/internal/sec_opts.h b/deps/jemalloc/include/jemalloc/internal/sec_opts.h
new file mode 100644
index 0000000..a3ad72f
--- /dev/null
+++ b/deps/jemalloc/include/jemalloc/internal/sec_opts.h
@@ -0,0 +1,59 @@
+#ifndef JEMALLOC_INTERNAL_SEC_OPTS_H
+#define JEMALLOC_INTERNAL_SEC_OPTS_H
+
+/*
+ * The configuration settings used by an sec_t.  Morally, this is part of the
+ * SEC interface, but we put it here for header-ordering reasons.
+ */
+
+typedef struct sec_opts_s sec_opts_t;
+struct sec_opts_s {
+	/*
+	 * We don't necessarily always use all the shards; requests are
+	 * distributed across shards [0, nshards - 1).
+	 */
+	size_t nshards;
+	/*
+	 * We'll automatically refuse to cache any objects in this sec if
+	 * they're larger than max_alloc bytes, instead forwarding such objects
+	 * directly to the fallback.
+	 */
+	size_t max_alloc;
+	/*
+	 * Exceeding this amount of cached extents in a shard causes us to start
+	 * flushing bins in that shard until we fall below bytes_after_flush.
+	 */
+	size_t max_bytes;
+	/*
+	 * The number of bytes (in all bins) we flush down to when we exceed
+	 * bytes_cur.  We want this to be less than bytes_cur, because
+	 * otherwise we could get into situations where a shard undergoing
+	 * net-deallocation keeps bytes_cur very near to max_bytes, so that
+	 * most deallocations get immediately forwarded to the underlying PAI
+	 * implementation, defeating the point of the SEC.
+	 */
+	size_t bytes_after_flush;
+	/*
+	 * When we can't satisfy an allocation out of the SEC because there are
+	 * no available ones cached, we allocate multiple of that size out of
+	 * the fallback allocator.  Eventually we might want to do something
+	 * cleverer, but for now we just grab a fixed number.
+	 */
+	size_t batch_fill_extra;
+};
+
+#define SEC_OPTS_DEFAULT {						\
+	/* nshards */							\
+	4,								\
+	/* max_alloc */							\
+	(32 * 1024) < PAGE ? PAGE : (32 * 1024),			\
+	/* max_bytes */							\
+	256 * 1024,							\
+	/* bytes_after_flush */						\
+	128 * 1024,							\
+	/* batch_fill_extra */						\
+	0								\
+}
+
+
+#endif /* JEMALLOC_INTERNAL_SEC_OPTS_H */
diff --git a/deps/jemalloc/include/jemalloc/internal/seq.h b/deps/jemalloc/include/jemalloc/internal/seq.h
new file mode 100644
index 0000000..ef2df4c
--- /dev/null
+++ b/deps/jemalloc/include/jemalloc/internal/seq.h
@@ -0,0 +1,55 @@
+#ifndef JEMALLOC_INTERNAL_SEQ_H
+#define JEMALLOC_INTERNAL_SEQ_H
+
+#include "jemalloc/internal/atomic.h"
+
+/*
+ * A simple seqlock implementation.
+ */
+
+#define seq_define(type, short_type)					\
+typedef struct {							\
+	atomic_zu_t seq;						\
+	atomic_zu_t data[						\
+	    (sizeof(type) + sizeof(size_t) - 1) / sizeof(size_t)];	\
+} seq_##short_type##_t;							\
+									\
+/*									\
+ * No internal synchronization -- the caller must ensure that there's	\
+ * only a single writer at a time.					\
+ */									\
+static inline void							\
+seq_store_##short_type(seq_##short_type##_t *dst, type *src) {		\
+	size_t buf[sizeof(dst->data) / sizeof(size_t)];			\
+	buf[sizeof(buf) / sizeof(size_t) - 1] = 0;			\
+	memcpy(buf, src, sizeof(type));					\
+	size_t old_seq = atomic_load_zu(&dst->seq, ATOMIC_RELAXED);	\
+	atomic_store_zu(&dst->seq, old_seq + 1, ATOMIC_RELAXED);	\
+	atomic_fence(ATOMIC_RELEASE);					\
+	for (size_t i = 0; i < sizeof(buf) / sizeof(size_t); i++) {	\
+		atomic_store_zu(&dst->data[i], buf[i], ATOMIC_RELAXED);	\
+	}								\
+	atomic_store_zu(&dst->seq, old_seq + 2, ATOMIC_RELEASE);	\
+}									\
+									\
+/* Returns whether or not the read was consistent. */			\
+static inline bool							\
+seq_try_load_##short_type(type *dst, seq_##short_type##_t *src) {	\
+	size_t buf[sizeof(src->data) / sizeof(size_t)];			\
+	size_t seq1 = atomic_load_zu(&src->seq, ATOMIC_ACQUIRE);	\
+	if (seq1 % 2 != 0) {						\
+		return false;						\
+	}								\
+	for (size_t i = 0; i < sizeof(buf) / sizeof(size_t); i++) {	\
+		buf[i] = atomic_load_zu(&src->data[i], ATOMIC_RELAXED);	\
+	}								\
+	atomic_fence(ATOMIC_ACQUIRE);					\
+	size_t seq2 = atomic_load_zu(&src->seq, ATOMIC_RELAXED);	\
+	if (seq1 != seq2) {						\
+		return false;						\
+	}								\
+	memcpy(dst, buf, sizeof(type));					\
+	return true;							\
+}
+
+#endif /* JEMALLOC_INTERNAL_SEQ_H */
diff --git a/deps/jemalloc/include/jemalloc/internal/slab_data.h b/deps/jemalloc/include/jemalloc/internal/slab_data.h
new file mode 100644
index 0000000..e821863
--- /dev/null
+++ b/deps/jemalloc/include/jemalloc/internal/slab_data.h
@@ -0,0 +1,12 @@
+#ifndef JEMALLOC_INTERNAL_SLAB_DATA_H
+#define JEMALLOC_INTERNAL_SLAB_DATA_H
+
+#include "jemalloc/internal/bitmap.h"
+
+typedef struct slab_data_s slab_data_t;
+struct slab_data_s {
+	/* Per region allocated/deallocated bitmap. */
+	bitmap_t bitmap[BITMAP_GROUPS_MAX];
+};
+
+#endif /* JEMALLOC_INTERNAL_SLAB_DATA_H */
diff --git a/deps/jemalloc/include/jemalloc/internal/smoothstep.h b/deps/jemalloc/include/jemalloc/internal/smoothstep.h
new file mode 100644
index 0000000..2e14430
--- /dev/null
+++ b/deps/jemalloc/include/jemalloc/internal/smoothstep.h
@@ -0,0 +1,232 @@
+#ifndef JEMALLOC_INTERNAL_SMOOTHSTEP_H
+#define JEMALLOC_INTERNAL_SMOOTHSTEP_H
+
+/*
+ * This file was generated by the following command:
+ *   sh smoothstep.sh smoother 200 24 3 15
+ */
+/******************************************************************************/
+
+/*
+ * This header defines a precomputed table based on the smoothstep family of
+ * sigmoidal curves (https://en.wikipedia.org/wiki/Smoothstep) that grow from 0
+ * to 1 in 0 <= x <= 1.  The table is stored as integer fixed point values so
+ * that floating point math can be avoided.
+ *
+ *                      3     2
+ *   smoothstep(x) = -2x  + 3x
+ *
+ *                       5      4      3
+ *   smootherstep(x) = 6x  - 15x  + 10x
+ *
+ *                          7      6      5      4
+ *   smootheststep(x) = -20x  + 70x  - 84x  + 35x
+ */
+
+#define SMOOTHSTEP_VARIANT	"smoother"
+#define SMOOTHSTEP_NSTEPS	200
+#define SMOOTHSTEP_BFP		24
+#define SMOOTHSTEP \
+ /* STEP(step, h,                            x,     y) */ \
+    STEP(   1, UINT64_C(0x0000000000000014), 0.005, 0.000001240643750) \
+    STEP(   2, UINT64_C(0x00000000000000a5), 0.010, 0.000009850600000) \
+    STEP(   3, UINT64_C(0x0000000000000229), 0.015, 0.000032995181250) \
+    STEP(   4, UINT64_C(0x0000000000000516), 0.020, 0.000077619200000) \
+    STEP(   5, UINT64_C(0x00000000000009dc), 0.025, 0.000150449218750) \
+    STEP(   6, UINT64_C(0x00000000000010e8), 0.030, 0.000257995800000) \
+    STEP(   7, UINT64_C(0x0000000000001aa4), 0.035, 0.000406555756250) \
+    STEP(   8, UINT64_C(0x0000000000002777), 0.040, 0.000602214400000) \
+    STEP(   9, UINT64_C(0x00000000000037c2), 0.045, 0.000850847793750) \
+    STEP(  10, UINT64_C(0x0000000000004be6), 0.050, 0.001158125000000) \
+    STEP(  11, UINT64_C(0x000000000000643c), 0.055, 0.001529510331250) \
+    STEP(  12, UINT64_C(0x000000000000811f), 0.060, 0.001970265600000) \
+    STEP(  13, UINT64_C(0x000000000000a2e2), 0.065, 0.002485452368750) \
+    STEP(  14, UINT64_C(0x000000000000c9d8), 0.070, 0.003079934200000) \
+    STEP(  15, UINT64_C(0x000000000000f64f), 0.075, 0.003758378906250) \
+    STEP(  16, UINT64_C(0x0000000000012891), 0.080, 0.004525260800000) \
+    STEP(  17, UINT64_C(0x00000000000160e7), 0.085, 0.005384862943750) \
+    STEP(  18, UINT64_C(0x0000000000019f95), 0.090, 0.006341279400000) \
+    STEP(  19, UINT64_C(0x000000000001e4dc), 0.095, 0.007398417481250) \
+    STEP(  20, UINT64_C(0x00000000000230fc), 0.100, 0.008560000000000) \
+    STEP(  21, UINT64_C(0x0000000000028430), 0.105, 0.009829567518750) \
+    STEP(  22, UINT64_C(0x000000000002deb0), 0.110, 0.011210480600000) \
+    STEP(  23, UINT64_C(0x00000000000340b1), 0.115, 0.012705922056250) \
+    STEP(  24, UINT64_C(0x000000000003aa67), 0.120, 0.014318899200000) \
+    STEP(  25, UINT64_C(0x0000000000041c00), 0.125, 0.016052246093750) \
+    STEP(  26, UINT64_C(0x00000000000495a8), 0.130, 0.017908625800000) \
+    STEP(  27, UINT64_C(0x000000000005178b), 0.135, 0.019890532631250) \
+    STEP(  28, UINT64_C(0x000000000005a1cf), 0.140, 0.022000294400000) \
+    STEP(  29, UINT64_C(0x0000000000063498), 0.145, 0.024240074668750) \
+    STEP(  30, UINT64_C(0x000000000006d009), 0.150, 0.026611875000000) \
+    STEP(  31, UINT64_C(0x000000000007743f), 0.155, 0.029117537206250) \
+    STEP(  32, UINT64_C(0x0000000000082157), 0.160, 0.031758745600000) \
+    STEP(  33, UINT64_C(0x000000000008d76b), 0.165, 0.034537029243750) \
+    STEP(  34, UINT64_C(0x0000000000099691), 0.170, 0.037453764200000) \
+    STEP(  35, UINT64_C(0x00000000000a5edf), 0.175, 0.040510175781250) \
+    STEP(  36, UINT64_C(0x00000000000b3067), 0.180, 0.043707340800000) \
+    STEP(  37, UINT64_C(0x00000000000c0b38), 0.185, 0.047046189818750) \
+    STEP(  38, UINT64_C(0x00000000000cef5e), 0.190, 0.050527509400000) \
+    STEP(  39, UINT64_C(0x00000000000ddce6), 0.195, 0.054151944356250) \
+    STEP(  40, UINT64_C(0x00000000000ed3d8), 0.200, 0.057920000000000) \
+    STEP(  41, UINT64_C(0x00000000000fd439), 0.205, 0.061832044393750) \
+    STEP(  42, UINT64_C(0x000000000010de0e), 0.210, 0.065888310600000) \
+    STEP(  43, UINT64_C(0x000000000011f158), 0.215, 0.070088898931250) \
+    STEP(  44, UINT64_C(0x0000000000130e17), 0.220, 0.074433779200000) \
+    STEP(  45, UINT64_C(0x0000000000143448), 0.225, 0.078922792968750) \
+    STEP(  46, UINT64_C(0x00000000001563e7), 0.230, 0.083555655800000) \
+    STEP(  47, UINT64_C(0x0000000000169cec), 0.235, 0.088331959506250) \
+    STEP(  48, UINT64_C(0x000000000017df4f), 0.240, 0.093251174400000) \
+    STEP(  49, UINT64_C(0x0000000000192b04), 0.245, 0.098312651543750) \
+    STEP(  50, UINT64_C(0x00000000001a8000), 0.250, 0.103515625000000) \
+    STEP(  51, UINT64_C(0x00000000001bde32), 0.255, 0.108859214081250) \
+    STEP(  52, UINT64_C(0x00000000001d458b), 0.260, 0.114342425600000) \
+    STEP(  53, UINT64_C(0x00000000001eb5f8), 0.265, 0.119964156118750) \
+    STEP(  54, UINT64_C(0x0000000000202f65), 0.270, 0.125723194200000) \
+    STEP(  55, UINT64_C(0x000000000021b1bb), 0.275, 0.131618222656250) \
+    STEP(  56, UINT64_C(0x0000000000233ce3), 0.280, 0.137647820800000) \
+    STEP(  57, UINT64_C(0x000000000024d0c3), 0.285, 0.143810466693750) \
+    STEP(  58, UINT64_C(0x0000000000266d40), 0.290, 0.150104539400000) \
+    STEP(  59, UINT64_C(0x000000000028123d), 0.295, 0.156528321231250) \
+    STEP(  60, UINT64_C(0x000000000029bf9c), 0.300, 0.163080000000000) \
+    STEP(  61, UINT64_C(0x00000000002b753d), 0.305, 0.169757671268750) \
+    STEP(  62, UINT64_C(0x00000000002d32fe), 0.310, 0.176559340600000) \
+    STEP(  63, UINT64_C(0x00000000002ef8bc), 0.315, 0.183482925806250) \
+    STEP(  64, UINT64_C(0x000000000030c654), 0.320, 0.190526259200000) \
+    STEP(  65, UINT64_C(0x0000000000329b9f), 0.325, 0.197687089843750) \
+    STEP(  66, UINT64_C(0x0000000000347875), 0.330, 0.204963085800000) \
+    STEP(  67, UINT64_C(0x0000000000365cb0), 0.335, 0.212351836381250) \
+    STEP(  68, UINT64_C(0x0000000000384825), 0.340, 0.219850854400000) \
+    STEP(  69, UINT64_C(0x00000000003a3aa8), 0.345, 0.227457578418750) \
+    STEP(  70, UINT64_C(0x00000000003c340f), 0.350, 0.235169375000000) \
+    STEP(  71, UINT64_C(0x00000000003e342b), 0.355, 0.242983540956250) \
+    STEP(  72, UINT64_C(0x0000000000403ace), 0.360, 0.250897305600000) \
+    STEP(  73, UINT64_C(0x00000000004247c8), 0.365, 0.258907832993750) \
+    STEP(  74, UINT64_C(0x0000000000445ae9), 0.370, 0.267012224200000) \
+    STEP(  75, UINT64_C(0x0000000000467400), 0.375, 0.275207519531250) \
+    STEP(  76, UINT64_C(0x00000000004892d8), 0.380, 0.283490700800000) \
+    STEP(  77, UINT64_C(0x00000000004ab740), 0.385, 0.291858693568750) \
+    STEP(  78, UINT64_C(0x00000000004ce102), 0.390, 0.300308369400000) \
+    STEP(  79, UINT64_C(0x00000000004f0fe9), 0.395, 0.308836548106250) \
+    STEP(  80, UINT64_C(0x00000000005143bf), 0.400, 0.317440000000000) \
+    STEP(  81, UINT64_C(0x0000000000537c4d), 0.405, 0.326115448143750) \
+    STEP(  82, UINT64_C(0x000000000055b95b), 0.410, 0.334859570600000) \
+    STEP(  83, UINT64_C(0x000000000057fab1), 0.415, 0.343669002681250) \
+    STEP(  84, UINT64_C(0x00000000005a4015), 0.420, 0.352540339200000) \
+    STEP(  85, UINT64_C(0x00000000005c894e), 0.425, 0.361470136718750) \
+    STEP(  86, UINT64_C(0x00000000005ed622), 0.430, 0.370454915800000) \
+    STEP(  87, UINT64_C(0x0000000000612655), 0.435, 0.379491163256250) \
+    STEP(  88, UINT64_C(0x00000000006379ac), 0.440, 0.388575334400000) \
+    STEP(  89, UINT64_C(0x000000000065cfeb), 0.445, 0.397703855293750) \
+    STEP(  90, UINT64_C(0x00000000006828d6), 0.450, 0.406873125000000) \
+    STEP(  91, UINT64_C(0x00000000006a842f), 0.455, 0.416079517831250) \
+    STEP(  92, UINT64_C(0x00000000006ce1bb), 0.460, 0.425319385600000) \
+    STEP(  93, UINT64_C(0x00000000006f413a), 0.465, 0.434589059868750) \
+    STEP(  94, UINT64_C(0x000000000071a270), 0.470, 0.443884854200000) \
+    STEP(  95, UINT64_C(0x000000000074051d), 0.475, 0.453203066406250) \
+    STEP(  96, UINT64_C(0x0000000000766905), 0.480, 0.462539980800000) \
+    STEP(  97, UINT64_C(0x000000000078cde7), 0.485, 0.471891870443750) \
+    STEP(  98, UINT64_C(0x00000000007b3387), 0.490, 0.481254999400000) \
+    STEP(  99, UINT64_C(0x00000000007d99a4), 0.495, 0.490625624981250) \
+    STEP( 100, UINT64_C(0x0000000000800000), 0.500, 0.500000000000000) \
+    STEP( 101, UINT64_C(0x000000000082665b), 0.505, 0.509374375018750) \
+    STEP( 102, UINT64_C(0x000000000084cc78), 0.510, 0.518745000600000) \
+    STEP( 103, UINT64_C(0x0000000000873218), 0.515, 0.528108129556250) \
+    STEP( 104, UINT64_C(0x00000000008996fa), 0.520, 0.537460019200000) \
+    STEP( 105, UINT64_C(0x00000000008bfae2), 0.525, 0.546796933593750) \
+    STEP( 106, UINT64_C(0x00000000008e5d8f), 0.530, 0.556115145800000) \
+    STEP( 107, UINT64_C(0x000000000090bec5), 0.535, 0.565410940131250) \
+    STEP( 108, UINT64_C(0x0000000000931e44), 0.540, 0.574680614400000) \
+    STEP( 109, UINT64_C(0x0000000000957bd0), 0.545, 0.583920482168750) \
+    STEP( 110, UINT64_C(0x000000000097d729), 0.550, 0.593126875000000) \
+    STEP( 111, UINT64_C(0x00000000009a3014), 0.555, 0.602296144706250) \
+    STEP( 112, UINT64_C(0x00000000009c8653), 0.560, 0.611424665600000) \
+    STEP( 113, UINT64_C(0x00000000009ed9aa), 0.565, 0.620508836743750) \
+    STEP( 114, UINT64_C(0x0000000000a129dd), 0.570, 0.629545084200000) \
+    STEP( 115, UINT64_C(0x0000000000a376b1), 0.575, 0.638529863281250) \
+    STEP( 116, UINT64_C(0x0000000000a5bfea), 0.580, 0.647459660800000) \
+    STEP( 117, UINT64_C(0x0000000000a8054e), 0.585, 0.656330997318750) \
+    STEP( 118, UINT64_C(0x0000000000aa46a4), 0.590, 0.665140429400000) \
+    STEP( 119, UINT64_C(0x0000000000ac83b2), 0.595, 0.673884551856250) \
+    STEP( 120, UINT64_C(0x0000000000aebc40), 0.600, 0.682560000000000) \
+    STEP( 121, UINT64_C(0x0000000000b0f016), 0.605, 0.691163451893750) \
+    STEP( 122, UINT64_C(0x0000000000b31efd), 0.610, 0.699691630600000) \
+    STEP( 123, UINT64_C(0x0000000000b548bf), 0.615, 0.708141306431250) \
+    STEP( 124, UINT64_C(0x0000000000b76d27), 0.620, 0.716509299200000) \
+    STEP( 125, UINT64_C(0x0000000000b98c00), 0.625, 0.724792480468750) \
+    STEP( 126, UINT64_C(0x0000000000bba516), 0.630, 0.732987775800000) \
+    STEP( 127, UINT64_C(0x0000000000bdb837), 0.635, 0.741092167006250) \
+    STEP( 128, UINT64_C(0x0000000000bfc531), 0.640, 0.749102694400000) \
+    STEP( 129, UINT64_C(0x0000000000c1cbd4), 0.645, 0.757016459043750) \
+    STEP( 130, UINT64_C(0x0000000000c3cbf0), 0.650, 0.764830625000000) \
+    STEP( 131, UINT64_C(0x0000000000c5c557), 0.655, 0.772542421581250) \
+    STEP( 132, UINT64_C(0x0000000000c7b7da), 0.660, 0.780149145600000) \
+    STEP( 133, UINT64_C(0x0000000000c9a34f), 0.665, 0.787648163618750) \
+    STEP( 134, UINT64_C(0x0000000000cb878a), 0.670, 0.795036914200000) \
+    STEP( 135, UINT64_C(0x0000000000cd6460), 0.675, 0.802312910156250) \
+    STEP( 136, UINT64_C(0x0000000000cf39ab), 0.680, 0.809473740800000) \
+    STEP( 137, UINT64_C(0x0000000000d10743), 0.685, 0.816517074193750) \
+    STEP( 138, UINT64_C(0x0000000000d2cd01), 0.690, 0.823440659400000) \
+    STEP( 139, UINT64_C(0x0000000000d48ac2), 0.695, 0.830242328731250) \
+    STEP( 140, UINT64_C(0x0000000000d64063), 0.700, 0.836920000000000) \
+    STEP( 141, UINT64_C(0x0000000000d7edc2), 0.705, 0.843471678768750) \
+    STEP( 142, UINT64_C(0x0000000000d992bf), 0.710, 0.849895460600000) \
+    STEP( 143, UINT64_C(0x0000000000db2f3c), 0.715, 0.856189533306250) \
+    STEP( 144, UINT64_C(0x0000000000dcc31c), 0.720, 0.862352179200000) \
+    STEP( 145, UINT64_C(0x0000000000de4e44), 0.725, 0.868381777343750) \
+    STEP( 146, UINT64_C(0x0000000000dfd09a), 0.730, 0.874276805800000) \
+    STEP( 147, UINT64_C(0x0000000000e14a07), 0.735, 0.880035843881250) \
+    STEP( 148, UINT64_C(0x0000000000e2ba74), 0.740, 0.885657574400000) \
+    STEP( 149, UINT64_C(0x0000000000e421cd), 0.745, 0.891140785918750) \
+    STEP( 150, UINT64_C(0x0000000000e58000), 0.750, 0.896484375000000) \
+    STEP( 151, UINT64_C(0x0000000000e6d4fb), 0.755, 0.901687348456250) \
+    STEP( 152, UINT64_C(0x0000000000e820b0), 0.760, 0.906748825600000) \
+    STEP( 153, UINT64_C(0x0000000000e96313), 0.765, 0.911668040493750) \
+    STEP( 154, UINT64_C(0x0000000000ea9c18), 0.770, 0.916444344200000) \
+    STEP( 155, UINT64_C(0x0000000000ebcbb7), 0.775, 0.921077207031250) \
+    STEP( 156, UINT64_C(0x0000000000ecf1e8), 0.780, 0.925566220800000) \
+    STEP( 157, UINT64_C(0x0000000000ee0ea7), 0.785, 0.929911101068750) \
+    STEP( 158, UINT64_C(0x0000000000ef21f1), 0.790, 0.934111689400000) \
+    STEP( 159, UINT64_C(0x0000000000f02bc6), 0.795, 0.938167955606250) \
+    STEP( 160, UINT64_C(0x0000000000f12c27), 0.800, 0.942080000000000) \
+    STEP( 161, UINT64_C(0x0000000000f22319), 0.805, 0.945848055643750) \
+    STEP( 162, UINT64_C(0x0000000000f310a1), 0.810, 0.949472490600000) \
+    STEP( 163, UINT64_C(0x0000000000f3f4c7), 0.815, 0.952953810181250) \
+    STEP( 164, UINT64_C(0x0000000000f4cf98), 0.820, 0.956292659200000) \
+    STEP( 165, UINT64_C(0x0000000000f5a120), 0.825, 0.959489824218750) \
+    STEP( 166, UINT64_C(0x0000000000f6696e), 0.830, 0.962546235800000) \
+    STEP( 167, UINT64_C(0x0000000000f72894), 0.835, 0.965462970756250) \
+    STEP( 168, UINT64_C(0x0000000000f7dea8), 0.840, 0.968241254400000) \
+    STEP( 169, UINT64_C(0x0000000000f88bc0), 0.845, 0.970882462793750) \
+    STEP( 170, UINT64_C(0x0000000000f92ff6), 0.850, 0.973388125000000) \
+    STEP( 171, UINT64_C(0x0000000000f9cb67), 0.855, 0.975759925331250) \
+    STEP( 172, UINT64_C(0x0000000000fa5e30), 0.860, 0.977999705600000) \
+    STEP( 173, UINT64_C(0x0000000000fae874), 0.865, 0.980109467368750) \
+    STEP( 174, UINT64_C(0x0000000000fb6a57), 0.870, 0.982091374200000) \
+    STEP( 175, UINT64_C(0x0000000000fbe400), 0.875, 0.983947753906250) \
+    STEP( 176, UINT64_C(0x0000000000fc5598), 0.880, 0.985681100800000) \
+    STEP( 177, UINT64_C(0x0000000000fcbf4e), 0.885, 0.987294077943750) \
+    STEP( 178, UINT64_C(0x0000000000fd214f), 0.890, 0.988789519400000) \
+    STEP( 179, UINT64_C(0x0000000000fd7bcf), 0.895, 0.990170432481250) \
+    STEP( 180, UINT64_C(0x0000000000fdcf03), 0.900, 0.991440000000000) \
+    STEP( 181, UINT64_C(0x0000000000fe1b23), 0.905, 0.992601582518750) \
+    STEP( 182, UINT64_C(0x0000000000fe606a), 0.910, 0.993658720600000) \
+    STEP( 183, UINT64_C(0x0000000000fe9f18), 0.915, 0.994615137056250) \
+    STEP( 184, UINT64_C(0x0000000000fed76e), 0.920, 0.995474739200000) \
+    STEP( 185, UINT64_C(0x0000000000ff09b0), 0.925, 0.996241621093750) \
+    STEP( 186, UINT64_C(0x0000000000ff3627), 0.930, 0.996920065800000) \
+    STEP( 187, UINT64_C(0x0000000000ff5d1d), 0.935, 0.997514547631250) \
+    STEP( 188, UINT64_C(0x0000000000ff7ee0), 0.940, 0.998029734400000) \
+    STEP( 189, UINT64_C(0x0000000000ff9bc3), 0.945, 0.998470489668750) \
+    STEP( 190, UINT64_C(0x0000000000ffb419), 0.950, 0.998841875000000) \
+    STEP( 191, UINT64_C(0x0000000000ffc83d), 0.955, 0.999149152206250) \
+    STEP( 192, UINT64_C(0x0000000000ffd888), 0.960, 0.999397785600000) \
+    STEP( 193, UINT64_C(0x0000000000ffe55b), 0.965, 0.999593444243750) \
+    STEP( 194, UINT64_C(0x0000000000ffef17), 0.970, 0.999742004200000) \
+    STEP( 195, UINT64_C(0x0000000000fff623), 0.975, 0.999849550781250) \
+    STEP( 196, UINT64_C(0x0000000000fffae9), 0.980, 0.999922380800000) \
+    STEP( 197, UINT64_C(0x0000000000fffdd6), 0.985, 0.999967004818750) \
+    STEP( 198, UINT64_C(0x0000000000ffff5a), 0.990, 0.999990149400000) \
+    STEP( 199, UINT64_C(0x0000000000ffffeb), 0.995, 0.999998759356250) \
+    STEP( 200, UINT64_C(0x0000000001000000), 1.000, 1.000000000000000) \
+
+#endif /* JEMALLOC_INTERNAL_SMOOTHSTEP_H */
diff --git a/deps/jemalloc/include/jemalloc/internal/smoothstep.sh b/deps/jemalloc/include/jemalloc/internal/smoothstep.sh
new file mode 100755
index 0000000..65de97b
--- /dev/null
+++ b/deps/jemalloc/include/jemalloc/internal/smoothstep.sh
@@ -0,0 +1,101 @@
+#!/bin/sh
+#
+# Generate a discrete lookup table for a sigmoid function in the smoothstep
+# family (https://en.wikipedia.org/wiki/Smoothstep), where the lookup table
+# entries correspond to x in [1/nsteps, 2/nsteps, ..., nsteps/nsteps].  Encode
+# the entries using a binary fixed point representation.
+#
+# Usage: smoothstep.sh <variant> <nsteps> <bfp> <xprec> <yprec>
+#
+#        <variant> is in {smooth, smoother, smoothest}.
+#        <nsteps> must be greater than zero.
+#        <bfp> must be in [0..62]; reasonable values are roughly [10..30].
+#        <xprec> is x decimal precision.
+#        <yprec> is y decimal precision.
+
+#set -x
+
+cmd="sh smoothstep.sh $*"
+variant=$1
+nsteps=$2
+bfp=$3
+xprec=$4
+yprec=$5
+
+case "${variant}" in
+  smooth)
+    ;;
+  smoother)
+    ;;
+  smoothest)
+    ;;
+  *)
+    echo "Unsupported variant"
+    exit 1
+    ;;
+esac
+
+smooth() {
+  step=$1
+  y=`echo ${yprec} k ${step} ${nsteps} / sx _2 lx 3 ^ '*' 3 lx 2 ^ '*' + p | dc | tr -d '\\\\\n' | sed -e 's#^\.#0.#g'`
+  h=`echo ${yprec} k 2 ${bfp} ^ ${y} '*' p | dc | tr -d '\\\\\n' | sed -e 's#^\.#0.#g' | tr '.' ' ' | awk '{print $1}' `
+}
+
+smoother() {
+  step=$1
+  y=`echo ${yprec} k ${step} ${nsteps} / sx 6 lx 5 ^ '*' _15 lx 4 ^ '*' + 10 lx 3 ^ '*' + p | dc | tr -d '\\\\\n' | sed -e 's#^\.#0.#g'`
+  h=`echo ${yprec} k 2 ${bfp} ^ ${y} '*' p | dc | tr -d '\\\\\n' | sed -e 's#^\.#0.#g' | tr '.' ' ' | awk '{print $1}' `
+}
+
+smoothest() {
+  step=$1
+  y=`echo ${yprec} k ${step} ${nsteps} / sx _20 lx 7 ^ '*' 70 lx 6 ^ '*' + _84 lx 5 ^ '*' + 35 lx 4 ^ '*' + p | dc | tr -d '\\\\\n' | sed -e 's#^\.#0.#g'`
+  h=`echo ${yprec} k 2 ${bfp} ^ ${y} '*' p | dc | tr -d '\\\\\n' | sed -e 's#^\.#0.#g' | tr '.' ' ' | awk '{print $1}' `
+}
+
+cat <<EOF
+#ifndef JEMALLOC_INTERNAL_SMOOTHSTEP_H
+#define JEMALLOC_INTERNAL_SMOOTHSTEP_H
+
+/*
+ * This file was generated by the following command:
+ *   $cmd
+ */
+/******************************************************************************/
+
+/*
+ * This header defines a precomputed table based on the smoothstep family of
+ * sigmoidal curves (https://en.wikipedia.org/wiki/Smoothstep) that grow from 0
+ * to 1 in 0 <= x <= 1.  The table is stored as integer fixed point values so
+ * that floating point math can be avoided.
+ *
+ *                      3     2
+ *   smoothstep(x) = -2x  + 3x
+ *
+ *                       5      4      3
+ *   smootherstep(x) = 6x  - 15x  + 10x
+ *
+ *                          7      6      5      4
+ *   smootheststep(x) = -20x  + 70x  - 84x  + 35x
+ */
+
+#define SMOOTHSTEP_VARIANT	"${variant}"
+#define SMOOTHSTEP_NSTEPS	${nsteps}
+#define SMOOTHSTEP_BFP		${bfp}
+#define SMOOTHSTEP \\
+ /* STEP(step, h,                            x,     y) */ \\
+EOF
+
+s=1
+while [ $s -le $nsteps ] ; do
+  $variant ${s}
+  x=`echo ${xprec} k ${s} ${nsteps} / p | dc | tr -d '\\\\\n' | sed -e 's#^\.#0.#g'`
+  printf '    STEP(%4d, UINT64_C(0x%016x), %s, %s) \\\n' ${s} ${h} ${x} ${y}
+
+  s=$((s+1))
+done
+echo
+
+cat <<EOF
+#endif /* JEMALLOC_INTERNAL_SMOOTHSTEP_H */
+EOF
diff --git a/deps/jemalloc/include/jemalloc/internal/spin.h b/deps/jemalloc/include/jemalloc/internal/spin.h
new file mode 100644
index 0000000..22804c6
--- /dev/null
+++ b/deps/jemalloc/include/jemalloc/internal/spin.h
@@ -0,0 +1,40 @@
+#ifndef JEMALLOC_INTERNAL_SPIN_H
+#define JEMALLOC_INTERNAL_SPIN_H
+
+#define SPIN_INITIALIZER {0U}
+
+typedef struct {
+	unsigned iteration;
+} spin_t;
+
+static inline void
+spin_cpu_spinwait() {
+#  if HAVE_CPU_SPINWAIT
+	CPU_SPINWAIT;
+#  else
+	volatile int x = 0;
+	x = x;
+#  endif
+}
+
+static inline void
+spin_adaptive(spin_t *spin) {
+	volatile uint32_t i;
+
+	if (spin->iteration < 5) {
+		for (i = 0; i < (1U << spin->iteration); i++) {
+			spin_cpu_spinwait();
+		}
+		spin->iteration++;
+	} else {
+#ifdef _WIN32
+		SwitchToThread();
+#else
+		sched_yield();
+#endif
+	}
+}
+
+#undef SPIN_INLINE
+
+#endif /* JEMALLOC_INTERNAL_SPIN_H */
diff --git a/deps/jemalloc/include/jemalloc/internal/stats.h b/deps/jemalloc/include/jemalloc/internal/stats.h
new file mode 100644
index 0000000..727f7dc
--- /dev/null
+++ b/deps/jemalloc/include/jemalloc/internal/stats.h
@@ -0,0 +1,54 @@
+#ifndef JEMALLOC_INTERNAL_STATS_H
+#define JEMALLOC_INTERNAL_STATS_H
+
+/*  OPTION(opt,		var_name,	default,	set_value_to) */
+#define STATS_PRINT_OPTIONS						\
+    OPTION('J',		json,		false,		true)		\
+    OPTION('g',		general,	true,		false)		\
+    OPTION('m',		merged,		config_stats,	false)		\
+    OPTION('d',		destroyed,	config_stats,	false)		\
+    OPTION('a',		unmerged,	config_stats,	false)		\
+    OPTION('b',		bins,		true,		false)		\
+    OPTION('l',		large,		true,		false)		\
+    OPTION('x',		mutex,		true,		false)		\
+    OPTION('e',		extents,	true,		false)		\
+    OPTION('h',		hpa,		config_stats,	false)
+
+enum {
+#define OPTION(o, v, d, s) stats_print_option_num_##v,
+    STATS_PRINT_OPTIONS
+#undef OPTION
+    stats_print_tot_num_options
+};
+
+/* Options for stats_print. */
+extern bool opt_stats_print;
+extern char opt_stats_print_opts[stats_print_tot_num_options+1];
+
+/* Utilities for stats_interval. */
+extern int64_t opt_stats_interval;
+extern char opt_stats_interval_opts[stats_print_tot_num_options+1];
+
+#define STATS_INTERVAL_DEFAULT -1
+/*
+ * Batch-increment the counter to reduce synchronization overhead.  Each thread
+ * merges after (interval >> LG_BATCH_SIZE) bytes of allocations; also limit the
+ * BATCH_MAX for accuracy when the interval is huge (which is expected).
+ */
+#define STATS_INTERVAL_ACCUM_LG_BATCH_SIZE 6
+#define STATS_INTERVAL_ACCUM_BATCH_MAX (4 << 20)
+
+/* Only accessed by thread event. */
+uint64_t stats_interval_new_event_wait(tsd_t *tsd);
+uint64_t stats_interval_postponed_event_wait(tsd_t *tsd);
+void stats_interval_event_handler(tsd_t *tsd, uint64_t elapsed);
+
+/* Implements je_malloc_stats_print. */
+void stats_print(write_cb_t *write_cb, void *cbopaque, const char *opts);
+
+bool stats_boot(void);
+void stats_prefork(tsdn_t *tsdn);
+void stats_postfork_parent(tsdn_t *tsdn);
+void stats_postfork_child(tsdn_t *tsdn);
+
+#endif /* JEMALLOC_INTERNAL_STATS_H */
diff --git a/deps/jemalloc/include/jemalloc/internal/sz.h b/deps/jemalloc/include/jemalloc/internal/sz.h
new file mode 100644
index 0000000..3c0fc1d
--- /dev/null
+++ b/deps/jemalloc/include/jemalloc/internal/sz.h
@@ -0,0 +1,371 @@
+#ifndef JEMALLOC_INTERNAL_SIZE_H
+#define JEMALLOC_INTERNAL_SIZE_H
+
+#include "jemalloc/internal/bit_util.h"
+#include "jemalloc/internal/pages.h"
+#include "jemalloc/internal/sc.h"
+#include "jemalloc/internal/util.h"
+
+/*
+ * sz module: Size computations.
+ *
+ * Some abbreviations used here:
+ *   p: Page
+ *   ind: Index
+ *   s, sz: Size
+ *   u: Usable size
+ *   a: Aligned
+ *
+ * These are not always used completely consistently, but should be enough to
+ * interpret function names.  E.g. sz_psz2ind converts page size to page size
+ * index; sz_sa2u converts a (size, alignment) allocation request to the usable
+ * size that would result from such an allocation.
+ */
+
+/* Page size index type. */
+typedef unsigned pszind_t;
+
+/* Size class index type. */
+typedef unsigned szind_t;
+
+/*
+ * sz_pind2sz_tab encodes the same information as could be computed by
+ * sz_pind2sz_compute().
+ */
+extern size_t sz_pind2sz_tab[SC_NPSIZES + 1];
+/*
+ * sz_index2size_tab encodes the same information as could be computed (at
+ * unacceptable cost in some code paths) by sz_index2size_compute().
+ */
+extern size_t sz_index2size_tab[SC_NSIZES];
+/*
+ * sz_size2index_tab is a compact lookup table that rounds request sizes up to
+ * size classes.  In order to reduce cache footprint, the table is compressed,
+ * and all accesses are via sz_size2index().
+ */
+extern uint8_t sz_size2index_tab[];
+
+/*
+ * Padding for large allocations: PAGE when opt_cache_oblivious == true (to
+ * enable cache index randomization); 0 otherwise.
+ */
+extern size_t sz_large_pad;
+
+extern void sz_boot(const sc_data_t *sc_data, bool cache_oblivious);
+
+JEMALLOC_ALWAYS_INLINE pszind_t
+sz_psz2ind(size_t psz) {
+	assert(psz > 0);
+	if (unlikely(psz > SC_LARGE_MAXCLASS)) {
+		return SC_NPSIZES;
+	}
+	/* x is the lg of the first base >= psz. */
+	pszind_t x = lg_ceil(psz);
+	/*
+	 * sc.h introduces a lot of size classes. These size classes are divided
+	 * into different size class groups. There is a very special size class
+	 * group, each size class in or after it is an integer multiple of PAGE.
+	 * We call it first_ps_rg. It means first page size regular group. The
+	 * range of first_ps_rg is (base, base * 2], and base == PAGE *
+	 * SC_NGROUP. off_to_first_ps_rg begins from 1, instead of 0. e.g.
+	 * off_to_first_ps_rg is 1 when psz is (PAGE * SC_NGROUP + 1).
+	 */
+	pszind_t off_to_first_ps_rg = (x < SC_LG_NGROUP + LG_PAGE) ?
+	    0 : x - (SC_LG_NGROUP + LG_PAGE);
+
+	/*
+	 * Same as sc_s::lg_delta.
+	 * Delta for off_to_first_ps_rg == 1 is PAGE,
+	 * for each increase in offset, it's multiplied by two.
+	 * Therefore, lg_delta = LG_PAGE + (off_to_first_ps_rg - 1).
+	 */
+	pszind_t lg_delta = (off_to_first_ps_rg == 0) ?
+	    LG_PAGE : LG_PAGE + (off_to_first_ps_rg - 1);
+
+	/*
+	 * Let's write psz in binary, e.g. 0011 for 0x3, 0111 for 0x7.
+	 * The leftmost bits whose len is lg_base decide the base of psz.
+	 * The rightmost bits whose len is lg_delta decide (pgz % PAGE).
+	 * The middle bits whose len is SC_LG_NGROUP decide ndelta.
+	 * ndelta is offset to the first size class in the size class group,
+	 * starts from 1.
+	 * If you don't know lg_base, ndelta or lg_delta, see sc.h.
+	 * |xxxxxxxxxxxxxxxxxxxx|------------------------|yyyyyyyyyyyyyyyyyyyyy|
+	 * |<-- len: lg_base -->|<-- len: SC_LG_NGROUP-->|<-- len: lg_delta -->|
+	 *                      |<--      ndelta      -->|
+	 * rg_inner_off = ndelta - 1
+	 * Why use (psz - 1)?
+	 * To handle case: psz % (1 << lg_delta) == 0.
+	 */
+	pszind_t rg_inner_off = (((psz - 1)) >> lg_delta) & (SC_NGROUP - 1);
+
+	pszind_t base_ind = off_to_first_ps_rg << SC_LG_NGROUP;
+	pszind_t ind = base_ind + rg_inner_off;
+	return ind;
+}
+
+static inline size_t
+sz_pind2sz_compute(pszind_t pind) {
+	if (unlikely(pind == SC_NPSIZES)) {
+		return SC_LARGE_MAXCLASS + PAGE;
+	}
+	size_t grp = pind >> SC_LG_NGROUP;
+	size_t mod = pind & ((ZU(1) << SC_LG_NGROUP) - 1);
+
+	size_t grp_size_mask = ~((!!grp)-1);
+	size_t grp_size = ((ZU(1) << (LG_PAGE + (SC_LG_NGROUP-1))) << grp)
+	    & grp_size_mask;
+
+	size_t shift = (grp == 0) ? 1 : grp;
+	size_t lg_delta = shift + (LG_PAGE-1);
+	size_t mod_size = (mod+1) << lg_delta;
+
+	size_t sz = grp_size + mod_size;
+	return sz;
+}
+
+static inline size_t
+sz_pind2sz_lookup(pszind_t pind) {
+	size_t ret = (size_t)sz_pind2sz_tab[pind];
+	assert(ret == sz_pind2sz_compute(pind));
+	return ret;
+}
+
+static inline size_t
+sz_pind2sz(pszind_t pind) {
+	assert(pind < SC_NPSIZES + 1);
+	return sz_pind2sz_lookup(pind);
+}
+
+static inline size_t
+sz_psz2u(size_t psz) {
+	if (unlikely(psz > SC_LARGE_MAXCLASS)) {
+		return SC_LARGE_MAXCLASS + PAGE;
+	}
+	size_t x = lg_floor((psz<<1)-1);
+	size_t lg_delta = (x < SC_LG_NGROUP + LG_PAGE + 1) ?
+	    LG_PAGE : x - SC_LG_NGROUP - 1;
+	size_t delta = ZU(1) << lg_delta;
+	size_t delta_mask = delta - 1;
+	size_t usize = (psz + delta_mask) & ~delta_mask;
+	return usize;
+}
+
+static inline szind_t
+sz_size2index_compute(size_t size) {
+	if (unlikely(size > SC_LARGE_MAXCLASS)) {
+		return SC_NSIZES;
+	}
+
+	if (size == 0) {
+		return 0;
+	}
+#if (SC_NTINY != 0)
+	if (size <= (ZU(1) << SC_LG_TINY_MAXCLASS)) {
+		szind_t lg_tmin = SC_LG_TINY_MAXCLASS - SC_NTINY + 1;
+		szind_t lg_ceil = lg_floor(pow2_ceil_zu(size));
+		return (lg_ceil < lg_tmin ? 0 : lg_ceil - lg_tmin);
+	}
+#endif
+	{
+		szind_t x = lg_floor((size<<1)-1);
+		szind_t shift = (x < SC_LG_NGROUP + LG_QUANTUM) ? 0 :
+		    x - (SC_LG_NGROUP + LG_QUANTUM);
+		szind_t grp = shift << SC_LG_NGROUP;
+
+		szind_t lg_delta = (x < SC_LG_NGROUP + LG_QUANTUM + 1)
+		    ? LG_QUANTUM : x - SC_LG_NGROUP - 1;
+
+		size_t delta_inverse_mask = ZU(-1) << lg_delta;
+		szind_t mod = ((((size-1) & delta_inverse_mask) >> lg_delta)) &
+		    ((ZU(1) << SC_LG_NGROUP) - 1);
+
+		szind_t index = SC_NTINY + grp + mod;
+		return index;
+	}
+}
+
+JEMALLOC_ALWAYS_INLINE szind_t
+sz_size2index_lookup_impl(size_t size) {
+	assert(size <= SC_LOOKUP_MAXCLASS);
+	return sz_size2index_tab[(size + (ZU(1) << SC_LG_TINY_MIN) - 1)
+	    >> SC_LG_TINY_MIN];
+}
+
+JEMALLOC_ALWAYS_INLINE szind_t
+sz_size2index_lookup(size_t size) {
+	szind_t ret = sz_size2index_lookup_impl(size);
+	assert(ret == sz_size2index_compute(size));
+	return ret;
+}
+
+JEMALLOC_ALWAYS_INLINE szind_t
+sz_size2index(size_t size) {
+	if (likely(size <= SC_LOOKUP_MAXCLASS)) {
+		return sz_size2index_lookup(size);
+	}
+	return sz_size2index_compute(size);
+}
+
+static inline size_t
+sz_index2size_compute(szind_t index) {
+#if (SC_NTINY > 0)
+	if (index < SC_NTINY) {
+		return (ZU(1) << (SC_LG_TINY_MAXCLASS - SC_NTINY + 1 + index));
+	}
+#endif
+	{
+		size_t reduced_index = index - SC_NTINY;
+		size_t grp = reduced_index >> SC_LG_NGROUP;
+		size_t mod = reduced_index & ((ZU(1) << SC_LG_NGROUP) -
+		    1);
+
+		size_t grp_size_mask = ~((!!grp)-1);
+		size_t grp_size = ((ZU(1) << (LG_QUANTUM +
+		    (SC_LG_NGROUP-1))) << grp) & grp_size_mask;
+
+		size_t shift = (grp == 0) ? 1 : grp;
+		size_t lg_delta = shift + (LG_QUANTUM-1);
+		size_t mod_size = (mod+1) << lg_delta;
+
+		size_t usize = grp_size + mod_size;
+		return usize;
+	}
+}
+
+JEMALLOC_ALWAYS_INLINE size_t
+sz_index2size_lookup_impl(szind_t index) {
+	return sz_index2size_tab[index];
+}
+
+JEMALLOC_ALWAYS_INLINE size_t
+sz_index2size_lookup(szind_t index) {
+	size_t ret = sz_index2size_lookup_impl(index);
+	assert(ret == sz_index2size_compute(index));
+	return ret;
+}
+
+JEMALLOC_ALWAYS_INLINE size_t
+sz_index2size(szind_t index) {
+	assert(index < SC_NSIZES);
+	return sz_index2size_lookup(index);
+}
+
+JEMALLOC_ALWAYS_INLINE void
+sz_size2index_usize_fastpath(size_t size, szind_t *ind, size_t *usize) {
+	*ind = sz_size2index_lookup_impl(size);
+	*usize = sz_index2size_lookup_impl(*ind);
+}
+
+JEMALLOC_ALWAYS_INLINE size_t
+sz_s2u_compute(size_t size) {
+	if (unlikely(size > SC_LARGE_MAXCLASS)) {
+		return 0;
+	}
+
+	if (size == 0) {
+		size++;
+	}
+#if (SC_NTINY > 0)
+	if (size <= (ZU(1) << SC_LG_TINY_MAXCLASS)) {
+		size_t lg_tmin = SC_LG_TINY_MAXCLASS - SC_NTINY + 1;
+		size_t lg_ceil = lg_floor(pow2_ceil_zu(size));
+		return (lg_ceil < lg_tmin ? (ZU(1) << lg_tmin) :
+		    (ZU(1) << lg_ceil));
+	}
+#endif
+	{
+		size_t x = lg_floor((size<<1)-1);
+		size_t lg_delta = (x < SC_LG_NGROUP + LG_QUANTUM + 1)
+		    ?  LG_QUANTUM : x - SC_LG_NGROUP - 1;
+		size_t delta = ZU(1) << lg_delta;
+		size_t delta_mask = delta - 1;
+		size_t usize = (size + delta_mask) & ~delta_mask;
+		return usize;
+	}
+}
+
+JEMALLOC_ALWAYS_INLINE size_t
+sz_s2u_lookup(size_t size) {
+	size_t ret = sz_index2size_lookup(sz_size2index_lookup(size));
+
+	assert(ret == sz_s2u_compute(size));
+	return ret;
+}
+
+/*
+ * Compute usable size that would result from allocating an object with the
+ * specified size.
+ */
+JEMALLOC_ALWAYS_INLINE size_t
+sz_s2u(size_t size) {
+	if (likely(size <= SC_LOOKUP_MAXCLASS)) {
+		return sz_s2u_lookup(size);
+	}
+	return sz_s2u_compute(size);
+}
+
+/*
+ * Compute usable size that would result from allocating an object with the
+ * specified size and alignment.
+ */
+JEMALLOC_ALWAYS_INLINE size_t
+sz_sa2u(size_t size, size_t alignment) {
+	size_t usize;
+
+	assert(alignment != 0 && ((alignment - 1) & alignment) == 0);
+
+	/* Try for a small size class. */
+	if (size <= SC_SMALL_MAXCLASS && alignment <= PAGE) {
+		/*
+		 * Round size up to the nearest multiple of alignment.
+		 *
+		 * This done, we can take advantage of the fact that for each
+		 * small size class, every object is aligned at the smallest
+		 * power of two that is non-zero in the base two representation
+		 * of the size.  For example:
+		 *
+		 *   Size |   Base 2 | Minimum alignment
+		 *   -----+----------+------------------
+		 *     96 |  1100000 |  32
+		 *    144 | 10100000 |  32
+		 *    192 | 11000000 |  64
+		 */
+		usize = sz_s2u(ALIGNMENT_CEILING(size, alignment));
+		if (usize < SC_LARGE_MINCLASS) {
+			return usize;
+		}
+	}
+
+	/* Large size class.  Beware of overflow. */
+
+	if (unlikely(alignment > SC_LARGE_MAXCLASS)) {
+		return 0;
+	}
+
+	/* Make sure result is a large size class. */
+	if (size <= SC_LARGE_MINCLASS) {
+		usize = SC_LARGE_MINCLASS;
+	} else {
+		usize = sz_s2u(size);
+		if (usize < size) {
+			/* size_t overflow. */
+			return 0;
+		}
+	}
+
+	/*
+	 * Calculate the multi-page mapping that large_palloc() would need in
+	 * order to guarantee the alignment.
+	 */
+	if (usize + sz_large_pad + PAGE_CEILING(alignment) - PAGE < usize) {
+		/* size_t overflow. */
+		return 0;
+	}
+	return usize;
+}
+
+size_t sz_psz_quantize_floor(size_t size);
+size_t sz_psz_quantize_ceil(size_t size);
+
+#endif /* JEMALLOC_INTERNAL_SIZE_H */
diff --git a/deps/jemalloc/include/jemalloc/internal/tcache_externs.h b/deps/jemalloc/include/jemalloc/internal/tcache_externs.h
new file mode 100644
index 0000000..a2ab710
--- /dev/null
+++ b/deps/jemalloc/include/jemalloc/internal/tcache_externs.h
@@ -0,0 +1,75 @@
+#ifndef JEMALLOC_INTERNAL_TCACHE_EXTERNS_H
+#define JEMALLOC_INTERNAL_TCACHE_EXTERNS_H
+
+extern bool opt_tcache;
+extern size_t opt_tcache_max;
+extern ssize_t	opt_lg_tcache_nslots_mul;
+extern unsigned opt_tcache_nslots_small_min;
+extern unsigned opt_tcache_nslots_small_max;
+extern unsigned opt_tcache_nslots_large;
+extern ssize_t opt_lg_tcache_shift;
+extern size_t opt_tcache_gc_incr_bytes;
+extern size_t opt_tcache_gc_delay_bytes;
+extern unsigned opt_lg_tcache_flush_small_div;
+extern unsigned opt_lg_tcache_flush_large_div;
+
+/*
+ * Number of tcache bins.  There are SC_NBINS small-object bins, plus 0 or more
+ * large-object bins.
+ */
+extern unsigned	nhbins;
+
+/* Maximum cached size class. */
+extern size_t	tcache_maxclass;
+
+extern cache_bin_info_t *tcache_bin_info;
+
+/*
+ * Explicit tcaches, managed via the tcache.{create,flush,destroy} mallctls and
+ * usable via the MALLOCX_TCACHE() flag.  The automatic per thread tcaches are
+ * completely disjoint from this data structure.  tcaches starts off as a sparse
+ * array, so it has no physical memory footprint until individual pages are
+ * touched.  This allows the entire array to be allocated the first time an
+ * explicit tcache is created without a disproportionate impact on memory usage.
+ */
+extern tcaches_t	*tcaches;
+
+size_t tcache_salloc(tsdn_t *tsdn, const void *ptr);
+void *tcache_alloc_small_hard(tsdn_t *tsdn, arena_t *arena, tcache_t *tcache,
+    cache_bin_t *tbin, szind_t binind, bool *tcache_success);
+
+void tcache_bin_flush_small(tsd_t *tsd, tcache_t *tcache, cache_bin_t *tbin,
+    szind_t binind, unsigned rem);
+void tcache_bin_flush_large(tsd_t *tsd, tcache_t *tcache, cache_bin_t *tbin,
+    szind_t binind, unsigned rem);
+void tcache_bin_flush_stashed(tsd_t *tsd, tcache_t *tcache, cache_bin_t *bin,
+    szind_t binind, bool is_small);
+void tcache_arena_reassociate(tsdn_t *tsdn, tcache_slow_t *tcache_slow,
+    tcache_t *tcache, arena_t *arena);
+tcache_t *tcache_create_explicit(tsd_t *tsd);
+void tcache_cleanup(tsd_t *tsd);
+void tcache_stats_merge(tsdn_t *tsdn, tcache_t *tcache, arena_t *arena);
+bool tcaches_create(tsd_t *tsd, base_t *base, unsigned *r_ind);
+void tcaches_flush(tsd_t *tsd, unsigned ind);
+void tcaches_destroy(tsd_t *tsd, unsigned ind);
+bool tcache_boot(tsdn_t *tsdn, base_t *base);
+void tcache_arena_associate(tsdn_t *tsdn, tcache_slow_t *tcache_slow,
+    tcache_t *tcache, arena_t *arena);
+void tcache_prefork(tsdn_t *tsdn);
+void tcache_postfork_parent(tsdn_t *tsdn);
+void tcache_postfork_child(tsdn_t *tsdn);
+void tcache_flush(tsd_t *tsd);
+bool tsd_tcache_data_init(tsd_t *tsd);
+bool tsd_tcache_enabled_data_init(tsd_t *tsd);
+
+void tcache_assert_initialized(tcache_t *tcache);
+
+/* Only accessed by thread event. */
+uint64_t tcache_gc_new_event_wait(tsd_t *tsd);
+uint64_t tcache_gc_postponed_event_wait(tsd_t *tsd);
+void tcache_gc_event_handler(tsd_t *tsd, uint64_t elapsed);
+uint64_t tcache_gc_dalloc_new_event_wait(tsd_t *tsd);
+uint64_t tcache_gc_dalloc_postponed_event_wait(tsd_t *tsd);
+void tcache_gc_dalloc_event_handler(tsd_t *tsd, uint64_t elapsed);
+
+#endif /* JEMALLOC_INTERNAL_TCACHE_EXTERNS_H */
diff --git a/deps/jemalloc/include/jemalloc/internal/tcache_inlines.h b/deps/jemalloc/include/jemalloc/internal/tcache_inlines.h
new file mode 100644
index 0000000..2634f14
--- /dev/null
+++ b/deps/jemalloc/include/jemalloc/internal/tcache_inlines.h
@@ -0,0 +1,193 @@
+#ifndef JEMALLOC_INTERNAL_TCACHE_INLINES_H
+#define JEMALLOC_INTERNAL_TCACHE_INLINES_H
+
+#include "jemalloc/internal/bin.h"
+#include "jemalloc/internal/jemalloc_internal_types.h"
+#include "jemalloc/internal/san.h"
+#include "jemalloc/internal/sc.h"
+#include "jemalloc/internal/sz.h"
+#include "jemalloc/internal/util.h"
+
+static inline bool
+tcache_enabled_get(tsd_t *tsd) {
+	return tsd_tcache_enabled_get(tsd);
+}
+
+static inline void
+tcache_enabled_set(tsd_t *tsd, bool enabled) {
+	bool was_enabled = tsd_tcache_enabled_get(tsd);
+
+	if (!was_enabled && enabled) {
+		tsd_tcache_data_init(tsd);
+	} else if (was_enabled && !enabled) {
+		tcache_cleanup(tsd);
+	}
+	/* Commit the state last.  Above calls check current state. */
+	tsd_tcache_enabled_set(tsd, enabled);
+	tsd_slow_update(tsd);
+}
+
+JEMALLOC_ALWAYS_INLINE bool
+tcache_small_bin_disabled(szind_t ind, cache_bin_t *bin) {
+	assert(ind < SC_NBINS);
+	bool ret = (cache_bin_info_ncached_max(&tcache_bin_info[ind]) == 0);
+	if (ret && bin != NULL) {
+		/* small size class but cache bin disabled. */
+		assert(ind >= nhbins);
+		assert((uintptr_t)(*bin->stack_head) ==
+		    cache_bin_preceding_junk);
+	}
+
+	return ret;
+}
+
+JEMALLOC_ALWAYS_INLINE void *
+tcache_alloc_small(tsd_t *tsd, arena_t *arena, tcache_t *tcache,
+    size_t size, szind_t binind, bool zero, bool slow_path) {
+	void *ret;
+	bool tcache_success;
+
+	assert(binind < SC_NBINS);
+	cache_bin_t *bin = &tcache->bins[binind];
+	ret = cache_bin_alloc(bin, &tcache_success);
+	assert(tcache_success == (ret != NULL));
+	if (unlikely(!tcache_success)) {
+		bool tcache_hard_success;
+		arena = arena_choose(tsd, arena);
+		if (unlikely(arena == NULL)) {
+			return NULL;
+		}
+		if (unlikely(tcache_small_bin_disabled(binind, bin))) {
+			/* stats and zero are handled directly by the arena. */
+			return arena_malloc_hard(tsd_tsdn(tsd), arena, size,
+			    binind, zero);
+		}
+		tcache_bin_flush_stashed(tsd, tcache, bin, binind,
+		    /* is_small */ true);
+
+		ret = tcache_alloc_small_hard(tsd_tsdn(tsd), arena, tcache,
+		    bin, binind, &tcache_hard_success);
+		if (tcache_hard_success == false) {
+			return NULL;
+		}
+	}
+
+	assert(ret);
+	if (unlikely(zero)) {
+		size_t usize = sz_index2size(binind);
+		assert(tcache_salloc(tsd_tsdn(tsd), ret) == usize);
+		memset(ret, 0, usize);
+	}
+	if (config_stats) {
+		bin->tstats.nrequests++;
+	}
+	return ret;
+}
+
+JEMALLOC_ALWAYS_INLINE void *
+tcache_alloc_large(tsd_t *tsd, arena_t *arena, tcache_t *tcache, size_t size,
+    szind_t binind, bool zero, bool slow_path) {
+	void *ret;
+	bool tcache_success;
+
+	assert(binind >= SC_NBINS && binind < nhbins);
+	cache_bin_t *bin = &tcache->bins[binind];
+	ret = cache_bin_alloc(bin, &tcache_success);
+	assert(tcache_success == (ret != NULL));
+	if (unlikely(!tcache_success)) {
+		/*
+		 * Only allocate one large object at a time, because it's quite
+		 * expensive to create one and not use it.
+		 */
+		arena = arena_choose(tsd, arena);
+		if (unlikely(arena == NULL)) {
+			return NULL;
+		}
+		tcache_bin_flush_stashed(tsd, tcache, bin, binind,
+		    /* is_small */ false);
+
+		ret = large_malloc(tsd_tsdn(tsd), arena, sz_s2u(size), zero);
+		if (ret == NULL) {
+			return NULL;
+		}
+	} else {
+		if (unlikely(zero)) {
+			size_t usize = sz_index2size(binind);
+			assert(usize <= tcache_maxclass);
+			memset(ret, 0, usize);
+		}
+
+		if (config_stats) {
+			bin->tstats.nrequests++;
+		}
+	}
+
+	return ret;
+}
+
+JEMALLOC_ALWAYS_INLINE void
+tcache_dalloc_small(tsd_t *tsd, tcache_t *tcache, void *ptr, szind_t binind,
+    bool slow_path) {
+	assert(tcache_salloc(tsd_tsdn(tsd), ptr) <= SC_SMALL_MAXCLASS);
+
+	cache_bin_t *bin = &tcache->bins[binind];
+	/*
+	 * Not marking the branch unlikely because this is past free_fastpath()
+	 * (which handles the most common cases), i.e. at this point it's often
+	 * uncommon cases.
+	 */
+	if (cache_bin_nonfast_aligned(ptr)) {
+		/* Junk unconditionally, even if bin is full. */
+		san_junk_ptr(ptr, sz_index2size(binind));
+		if (cache_bin_stash(bin, ptr)) {
+			return;
+		}
+		assert(cache_bin_full(bin));
+		/* Bin full; fall through into the flush branch. */
+	}
+
+	if (unlikely(!cache_bin_dalloc_easy(bin, ptr))) {
+		if (unlikely(tcache_small_bin_disabled(binind, bin))) {
+			arena_dalloc_small(tsd_tsdn(tsd), ptr);
+			return;
+		}
+		cache_bin_sz_t max = cache_bin_info_ncached_max(
+		    &tcache_bin_info[binind]);
+		unsigned remain = max >> opt_lg_tcache_flush_small_div;
+		tcache_bin_flush_small(tsd, tcache, bin, binind, remain);
+		bool ret = cache_bin_dalloc_easy(bin, ptr);
+		assert(ret);
+	}
+}
+
+JEMALLOC_ALWAYS_INLINE void
+tcache_dalloc_large(tsd_t *tsd, tcache_t *tcache, void *ptr, szind_t binind,
+    bool slow_path) {
+
+	assert(tcache_salloc(tsd_tsdn(tsd), ptr)
+	    > SC_SMALL_MAXCLASS);
+	assert(tcache_salloc(tsd_tsdn(tsd), ptr) <= tcache_maxclass);
+
+	cache_bin_t *bin = &tcache->bins[binind];
+	if (unlikely(!cache_bin_dalloc_easy(bin, ptr))) {
+		unsigned remain = cache_bin_info_ncached_max(
+		    &tcache_bin_info[binind]) >> opt_lg_tcache_flush_large_div;
+		tcache_bin_flush_large(tsd, tcache, bin, binind, remain);
+		bool ret = cache_bin_dalloc_easy(bin, ptr);
+		assert(ret);
+	}
+}
+
+JEMALLOC_ALWAYS_INLINE tcache_t *
+tcaches_get(tsd_t *tsd, unsigned ind) {
+	tcaches_t *elm = &tcaches[ind];
+	if (unlikely(elm->tcache == NULL)) {
+		malloc_printf("<jemalloc>: invalid tcache id (%u).\n", ind);
+		abort();
+	} else if (unlikely(elm->tcache == TCACHES_ELM_NEED_REINIT)) {
+		elm->tcache = tcache_create_explicit(tsd);
+	}
+	return elm->tcache;
+}
+
+#endif /* JEMALLOC_INTERNAL_TCACHE_INLINES_H */
diff --git a/deps/jemalloc/include/jemalloc/internal/tcache_structs.h b/deps/jemalloc/include/jemalloc/internal/tcache_structs.h
new file mode 100644
index 0000000..176d73d
--- /dev/null
+++ b/deps/jemalloc/include/jemalloc/internal/tcache_structs.h
@@ -0,0 +1,68 @@
+#ifndef JEMALLOC_INTERNAL_TCACHE_STRUCTS_H
+#define JEMALLOC_INTERNAL_TCACHE_STRUCTS_H
+
+#include "jemalloc/internal/cache_bin.h"
+#include "jemalloc/internal/ql.h"
+#include "jemalloc/internal/sc.h"
+#include "jemalloc/internal/ticker.h"
+#include "jemalloc/internal/tsd_types.h"
+
+/*
+ * The tcache state is split into the slow and hot path data.  Each has a
+ * pointer to the other, and the data always comes in pairs.  The layout of each
+ * of them varies in practice; tcache_slow lives in the TSD for the automatic
+ * tcache, and as part of a dynamic allocation for manual allocations.  Keeping
+ * a pointer to tcache_slow lets us treat these cases uniformly, rather than
+ * splitting up the tcache [de]allocation code into those paths called with the
+ * TSD tcache and those called with a manual tcache.
+ */
+
+struct tcache_slow_s {
+	/* Lets us track all the tcaches in an arena. */
+	ql_elm(tcache_slow_t) link;
+
+	/*
+	 * The descriptor lets the arena find our cache bins without seeing the
+	 * tcache definition.  This enables arenas to aggregate stats across
+	 * tcaches without having a tcache dependency.
+	 */
+	cache_bin_array_descriptor_t cache_bin_array_descriptor;
+
+	/* The arena this tcache is associated with. */
+	arena_t		*arena;
+	/* Next bin to GC. */
+	szind_t		next_gc_bin;
+	/* For small bins, fill (ncached_max >> lg_fill_div). */
+	uint8_t		lg_fill_div[SC_NBINS];
+	/* For small bins, whether has been refilled since last GC. */
+	bool		bin_refilled[SC_NBINS];
+	/*
+	 * For small bins, the number of items we can pretend to flush before
+	 * actually flushing.
+	 */
+	uint8_t		bin_flush_delay_items[SC_NBINS];
+	/*
+	 * The start of the allocation containing the dynamic allocation for
+	 * either the cache bins alone, or the cache bin memory as well as this
+	 * tcache_slow_t and its associated tcache_t.
+	 */
+	void		*dyn_alloc;
+
+	/* The associated bins. */
+	tcache_t	*tcache;
+};
+
+struct tcache_s {
+	tcache_slow_t	*tcache_slow;
+	cache_bin_t	bins[TCACHE_NBINS_MAX];
+};
+
+/* Linkage for list of available (previously used) explicit tcache IDs. */
+struct tcaches_s {
+	union {
+		tcache_t	*tcache;
+		tcaches_t	*next;
+	};
+};
+
+#endif /* JEMALLOC_INTERNAL_TCACHE_STRUCTS_H */
diff --git a/deps/jemalloc/include/jemalloc/internal/tcache_types.h b/deps/jemalloc/include/jemalloc/internal/tcache_types.h
new file mode 100644
index 0000000..583677e
--- /dev/null
+++ b/deps/jemalloc/include/jemalloc/internal/tcache_types.h
@@ -0,0 +1,35 @@
+#ifndef JEMALLOC_INTERNAL_TCACHE_TYPES_H
+#define JEMALLOC_INTERNAL_TCACHE_TYPES_H
+
+#include "jemalloc/internal/sc.h"
+
+typedef struct tcache_slow_s tcache_slow_t;
+typedef struct tcache_s tcache_t;
+typedef struct tcaches_s tcaches_t;
+
+/*
+ * tcache pointers close to NULL are used to encode state information that is
+ * used for two purposes: preventing thread caching on a per thread basis and
+ * cleaning up during thread shutdown.
+ */
+#define TCACHE_STATE_DISABLED		((tcache_t *)(uintptr_t)1)
+#define TCACHE_STATE_REINCARNATED	((tcache_t *)(uintptr_t)2)
+#define TCACHE_STATE_PURGATORY		((tcache_t *)(uintptr_t)3)
+#define TCACHE_STATE_MAX		TCACHE_STATE_PURGATORY
+
+/* Used in TSD static initializer only. Real init in tsd_tcache_data_init(). */
+#define TCACHE_ZERO_INITIALIZER {0}
+#define TCACHE_SLOW_ZERO_INITIALIZER {0}
+
+/* Used in TSD static initializer only. Will be initialized to opt_tcache. */
+#define TCACHE_ENABLED_ZERO_INITIALIZER false
+
+/* Used for explicit tcache only. Means flushed but not destroyed. */
+#define TCACHES_ELM_NEED_REINIT ((tcache_t *)(uintptr_t)1)
+
+#define TCACHE_LG_MAXCLASS_LIMIT 23 /* tcache_maxclass = 8M */
+#define TCACHE_MAXCLASS_LIMIT ((size_t)1 << TCACHE_LG_MAXCLASS_LIMIT)
+#define TCACHE_NBINS_MAX (SC_NBINS + SC_NGROUP *			\
+    (TCACHE_LG_MAXCLASS_LIMIT - SC_LG_LARGE_MINCLASS) + 1)
+
+#endif /* JEMALLOC_INTERNAL_TCACHE_TYPES_H */
diff --git a/deps/jemalloc/include/jemalloc/internal/test_hooks.h b/deps/jemalloc/include/jemalloc/internal/test_hooks.h
new file mode 100644
index 0000000..3d530b5
--- /dev/null
+++ b/deps/jemalloc/include/jemalloc/internal/test_hooks.h
@@ -0,0 +1,24 @@
+#ifndef JEMALLOC_INTERNAL_TEST_HOOKS_H
+#define JEMALLOC_INTERNAL_TEST_HOOKS_H
+
+extern JEMALLOC_EXPORT void (*test_hooks_arena_new_hook)();
+extern JEMALLOC_EXPORT void (*test_hooks_libc_hook)();
+
+#if defined(JEMALLOC_JET) || defined(JEMALLOC_UNIT_TEST)
+#  define JEMALLOC_TEST_HOOK(fn, hook) ((void)(hook != NULL && (hook(), 0)), fn)
+
+#  define open JEMALLOC_TEST_HOOK(open, test_hooks_libc_hook)
+#  define read JEMALLOC_TEST_HOOK(read, test_hooks_libc_hook)
+#  define write JEMALLOC_TEST_HOOK(write, test_hooks_libc_hook)
+#  define readlink JEMALLOC_TEST_HOOK(readlink, test_hooks_libc_hook)
+#  define close JEMALLOC_TEST_HOOK(close, test_hooks_libc_hook)
+#  define creat JEMALLOC_TEST_HOOK(creat, test_hooks_libc_hook)
+#  define secure_getenv JEMALLOC_TEST_HOOK(secure_getenv, test_hooks_libc_hook)
+/* Note that this is undef'd and re-define'd in src/prof.c. */
+#  define _Unwind_Backtrace JEMALLOC_TEST_HOOK(_Unwind_Backtrace, test_hooks_libc_hook)
+#else
+#  define JEMALLOC_TEST_HOOK(fn, hook) fn
+#endif
+
+
+#endif /* JEMALLOC_INTERNAL_TEST_HOOKS_H */
diff --git a/deps/jemalloc/include/jemalloc/internal/thread_event.h b/deps/jemalloc/include/jemalloc/internal/thread_event.h
new file mode 100644
index 0000000..2f4e1b3
--- /dev/null
+++ b/deps/jemalloc/include/jemalloc/internal/thread_event.h
@@ -0,0 +1,301 @@
+#ifndef JEMALLOC_INTERNAL_THREAD_EVENT_H
+#define JEMALLOC_INTERNAL_THREAD_EVENT_H
+
+#include "jemalloc/internal/tsd.h"
+
+/* "te" is short for "thread_event" */
+
+/*
+ * TE_MIN_START_WAIT should not exceed the minimal allocation usize.
+ */
+#define TE_MIN_START_WAIT ((uint64_t)1U)
+#define TE_MAX_START_WAIT UINT64_MAX
+
+/*
+ * Maximum threshold on thread_(de)allocated_next_event_fast, so that there is
+ * no need to check overflow in malloc fast path. (The allocation size in malloc
+ * fast path never exceeds SC_LOOKUP_MAXCLASS.)
+ */
+#define TE_NEXT_EVENT_FAST_MAX (UINT64_MAX - SC_LOOKUP_MAXCLASS + 1U)
+
+/*
+ * The max interval helps make sure that malloc stays on the fast path in the
+ * common case, i.e. thread_allocated < thread_allocated_next_event_fast.  When
+ * thread_allocated is within an event's distance to TE_NEXT_EVENT_FAST_MAX
+ * above, thread_allocated_next_event_fast is wrapped around and we fall back to
+ * the medium-fast path. The max interval makes sure that we're not staying on
+ * the fallback case for too long, even if there's no active event or if all
+ * active events have long wait times.
+ */
+#define TE_MAX_INTERVAL ((uint64_t)(4U << 20))
+
+/*
+ * Invalid elapsed time, for situations where elapsed time is not needed.  See
+ * comments in thread_event.c for more info.
+ */
+#define TE_INVALID_ELAPSED UINT64_MAX
+
+typedef struct te_ctx_s {
+	bool is_alloc;
+	uint64_t *current;
+	uint64_t *last_event;
+	uint64_t *next_event;
+	uint64_t *next_event_fast;
+} te_ctx_t;
+
+void te_assert_invariants_debug(tsd_t *tsd);
+void te_event_trigger(tsd_t *tsd, te_ctx_t *ctx);
+void te_recompute_fast_threshold(tsd_t *tsd);
+void tsd_te_init(tsd_t *tsd);
+
+/*
+ * List of all events, in the following format:
+ *  E(event,		(condition), is_alloc_event)
+ */
+#define ITERATE_OVER_ALL_EVENTS						\
+    E(tcache_gc,		(opt_tcache_gc_incr_bytes > 0), true)	\
+    E(prof_sample,		(config_prof && opt_prof), true)  	\
+    E(stats_interval,		(opt_stats_interval >= 0), true)   	\
+    E(tcache_gc_dalloc,		(opt_tcache_gc_incr_bytes > 0), false)	\
+    E(peak_alloc,		config_stats, true)			\
+    E(peak_dalloc,		config_stats, false)
+
+#define E(event, condition_unused, is_alloc_event_unused)		\
+    C(event##_event_wait)
+
+/* List of all thread event counters. */
+#define ITERATE_OVER_ALL_COUNTERS					\
+    C(thread_allocated)							\
+    C(thread_allocated_last_event)					\
+    ITERATE_OVER_ALL_EVENTS						\
+    C(prof_sample_last_event)						\
+    C(stats_interval_last_event)
+
+/* Getters directly wrap TSD getters. */
+#define C(counter)							\
+JEMALLOC_ALWAYS_INLINE uint64_t						\
+counter##_get(tsd_t *tsd) {						\
+	return tsd_##counter##_get(tsd);				\
+}
+
+ITERATE_OVER_ALL_COUNTERS
+#undef C
+
+/*
+ * Setters call the TSD pointer getters rather than the TSD setters, so that
+ * the counters can be modified even when TSD state is reincarnated or
+ * minimal_initialized: if an event is triggered in such cases, we will
+ * temporarily delay the event and let it be immediately triggered at the next
+ * allocation call.
+ */
+#define C(counter)							\
+JEMALLOC_ALWAYS_INLINE void						\
+counter##_set(tsd_t *tsd, uint64_t v) {					\
+	*tsd_##counter##p_get(tsd) = v;					\
+}
+
+ITERATE_OVER_ALL_COUNTERS
+#undef C
+
+/*
+ * For generating _event_wait getter / setter functions for each individual
+ * event.
+ */
+#undef E
+
+/*
+ * The malloc and free fastpath getters -- use the unsafe getters since tsd may
+ * be non-nominal, in which case the fast_threshold will be set to 0.  This
+ * allows checking for events and tsd non-nominal in a single branch.
+ *
+ * Note that these can only be used on the fastpath.
+ */
+JEMALLOC_ALWAYS_INLINE void
+te_malloc_fastpath_ctx(tsd_t *tsd, uint64_t *allocated, uint64_t *threshold) {
+	*allocated = *tsd_thread_allocatedp_get_unsafe(tsd);
+	*threshold = *tsd_thread_allocated_next_event_fastp_get_unsafe(tsd);
+	assert(*threshold <= TE_NEXT_EVENT_FAST_MAX);
+}
+
+JEMALLOC_ALWAYS_INLINE void
+te_free_fastpath_ctx(tsd_t *tsd, uint64_t *deallocated, uint64_t *threshold) {
+	/* Unsafe getters since this may happen before tsd_init. */
+	*deallocated = *tsd_thread_deallocatedp_get_unsafe(tsd);
+	*threshold = *tsd_thread_deallocated_next_event_fastp_get_unsafe(tsd);
+	assert(*threshold <= TE_NEXT_EVENT_FAST_MAX);
+}
+
+JEMALLOC_ALWAYS_INLINE bool
+te_ctx_is_alloc(te_ctx_t *ctx) {
+	return ctx->is_alloc;
+}
+
+JEMALLOC_ALWAYS_INLINE uint64_t
+te_ctx_current_bytes_get(te_ctx_t *ctx) {
+	return *ctx->current;
+}
+
+JEMALLOC_ALWAYS_INLINE void
+te_ctx_current_bytes_set(te_ctx_t *ctx, uint64_t v) {
+	*ctx->current = v;
+}
+
+JEMALLOC_ALWAYS_INLINE uint64_t
+te_ctx_last_event_get(te_ctx_t *ctx) {
+	return *ctx->last_event;
+}
+
+JEMALLOC_ALWAYS_INLINE void
+te_ctx_last_event_set(te_ctx_t *ctx, uint64_t v) {
+	*ctx->last_event = v;
+}
+
+/* Below 3 for next_event_fast. */
+JEMALLOC_ALWAYS_INLINE uint64_t
+te_ctx_next_event_fast_get(te_ctx_t *ctx) {
+	uint64_t v = *ctx->next_event_fast;
+	assert(v <= TE_NEXT_EVENT_FAST_MAX);
+	return v;
+}
+
+JEMALLOC_ALWAYS_INLINE void
+te_ctx_next_event_fast_set(te_ctx_t *ctx, uint64_t v) {
+	assert(v <= TE_NEXT_EVENT_FAST_MAX);
+	*ctx->next_event_fast = v;
+}
+
+JEMALLOC_ALWAYS_INLINE void
+te_next_event_fast_set_non_nominal(tsd_t *tsd) {
+	/*
+	 * Set the fast thresholds to zero when tsd is non-nominal.  Use the
+	 * unsafe getter as this may get called during tsd init and clean up.
+	 */
+	*tsd_thread_allocated_next_event_fastp_get_unsafe(tsd) = 0;
+	*tsd_thread_deallocated_next_event_fastp_get_unsafe(tsd) = 0;
+}
+
+/* For next_event.  Setter also updates the fast threshold. */
+JEMALLOC_ALWAYS_INLINE uint64_t
+te_ctx_next_event_get(te_ctx_t *ctx) {
+	return *ctx->next_event;
+}
+
+JEMALLOC_ALWAYS_INLINE void
+te_ctx_next_event_set(tsd_t *tsd, te_ctx_t *ctx, uint64_t v) {
+	*ctx->next_event = v;
+	te_recompute_fast_threshold(tsd);
+}
+
+/*
+ * The function checks in debug mode whether the thread event counters are in
+ * a consistent state, which forms the invariants before and after each round
+ * of thread event handling that we can rely on and need to promise.
+ * The invariants are only temporarily violated in the middle of
+ * te_event_advance() if an event is triggered (the te_event_trigger() call at
+ * the end will restore the invariants).
+ */
+JEMALLOC_ALWAYS_INLINE void
+te_assert_invariants(tsd_t *tsd) {
+	if (config_debug) {
+		te_assert_invariants_debug(tsd);
+	}
+}
+
+JEMALLOC_ALWAYS_INLINE void
+te_ctx_get(tsd_t *tsd, te_ctx_t *ctx, bool is_alloc) {
+	ctx->is_alloc = is_alloc;
+	if (is_alloc) {
+		ctx->current = tsd_thread_allocatedp_get(tsd);
+		ctx->last_event = tsd_thread_allocated_last_eventp_get(tsd);
+		ctx->next_event = tsd_thread_allocated_next_eventp_get(tsd);
+		ctx->next_event_fast =
+		    tsd_thread_allocated_next_event_fastp_get(tsd);
+	} else {
+		ctx->current = tsd_thread_deallocatedp_get(tsd);
+		ctx->last_event = tsd_thread_deallocated_last_eventp_get(tsd);
+		ctx->next_event = tsd_thread_deallocated_next_eventp_get(tsd);
+		ctx->next_event_fast =
+		    tsd_thread_deallocated_next_event_fastp_get(tsd);
+	}
+}
+
+/*
+ * The lookahead functionality facilitates events to be able to lookahead, i.e.
+ * without touching the event counters, to determine whether an event would be
+ * triggered.  The event counters are not advanced until the end of the
+ * allocation / deallocation calls, so the lookahead can be useful if some
+ * preparation work for some event must be done early in the allocation /
+ * deallocation calls.
+ *
+ * Currently only the profiling sampling event needs the lookahead
+ * functionality, so we don't yet define general purpose lookahead functions.
+ *
+ * Surplus is a terminology referring to the amount of bytes beyond what's
+ * needed for triggering an event, which can be a useful quantity to have in
+ * general when lookahead is being called.
+ */
+
+JEMALLOC_ALWAYS_INLINE bool
+te_prof_sample_event_lookahead_surplus(tsd_t *tsd, size_t usize,
+    size_t *surplus) {
+	if (surplus != NULL) {
+		/*
+		 * This is a dead store: the surplus will be overwritten before
+		 * any read.  The initialization suppresses compiler warnings.
+		 * Meanwhile, using SIZE_MAX to initialize is good for
+		 * debugging purpose, because a valid surplus value is strictly
+		 * less than usize, which is at most SIZE_MAX.
+		 */
+		*surplus = SIZE_MAX;
+	}
+	if (unlikely(!tsd_nominal(tsd) || tsd_reentrancy_level_get(tsd) > 0)) {
+		return false;
+	}
+	/* The subtraction is intentionally susceptible to underflow. */
+	uint64_t accumbytes = tsd_thread_allocated_get(tsd) + usize -
+	    tsd_thread_allocated_last_event_get(tsd);
+	uint64_t sample_wait = tsd_prof_sample_event_wait_get(tsd);
+	if (accumbytes < sample_wait) {
+		return false;
+	}
+	assert(accumbytes - sample_wait < (uint64_t)usize);
+	if (surplus != NULL) {
+		*surplus = (size_t)(accumbytes - sample_wait);
+	}
+	return true;
+}
+
+JEMALLOC_ALWAYS_INLINE bool
+te_prof_sample_event_lookahead(tsd_t *tsd, size_t usize) {
+	return te_prof_sample_event_lookahead_surplus(tsd, usize, NULL);
+}
+
+JEMALLOC_ALWAYS_INLINE void
+te_event_advance(tsd_t *tsd, size_t usize, bool is_alloc) {
+	te_assert_invariants(tsd);
+
+	te_ctx_t ctx;
+	te_ctx_get(tsd, &ctx, is_alloc);
+
+	uint64_t bytes_before = te_ctx_current_bytes_get(&ctx);
+	te_ctx_current_bytes_set(&ctx, bytes_before + usize);
+
+	/* The subtraction is intentionally susceptible to underflow. */
+	if (likely(usize < te_ctx_next_event_get(&ctx) - bytes_before)) {
+		te_assert_invariants(tsd);
+	} else {
+		te_event_trigger(tsd, &ctx);
+	}
+}
+
+JEMALLOC_ALWAYS_INLINE void
+thread_dalloc_event(tsd_t *tsd, size_t usize) {
+	te_event_advance(tsd, usize, false);
+}
+
+JEMALLOC_ALWAYS_INLINE void
+thread_alloc_event(tsd_t *tsd, size_t usize) {
+	te_event_advance(tsd, usize, true);
+}
+
+#endif /* JEMALLOC_INTERNAL_THREAD_EVENT_H */
diff --git a/deps/jemalloc/include/jemalloc/internal/ticker.h b/deps/jemalloc/include/jemalloc/internal/ticker.h
new file mode 100644
index 0000000..6b51dde
--- /dev/null
+++ b/deps/jemalloc/include/jemalloc/internal/ticker.h
@@ -0,0 +1,175 @@
+#ifndef JEMALLOC_INTERNAL_TICKER_H
+#define JEMALLOC_INTERNAL_TICKER_H
+
+#include "jemalloc/internal/prng.h"
+#include "jemalloc/internal/util.h"
+
+/**
+ * A ticker makes it easy to count-down events until some limit.  You
+ * ticker_init the ticker to trigger every nticks events.  You then notify it
+ * that an event has occurred with calls to ticker_tick (or that nticks events
+ * have occurred with a call to ticker_ticks), which will return true (and reset
+ * the counter) if the countdown hit zero.
+ */
+typedef struct ticker_s ticker_t;
+struct ticker_s {
+	int32_t tick;
+	int32_t nticks;
+};
+
+static inline void
+ticker_init(ticker_t *ticker, int32_t nticks) {
+	ticker->tick = nticks;
+	ticker->nticks = nticks;
+}
+
+static inline void
+ticker_copy(ticker_t *ticker, const ticker_t *other) {
+	*ticker = *other;
+}
+
+static inline int32_t
+ticker_read(const ticker_t *ticker) {
+	return ticker->tick;
+}
+
+/*
+ * Not intended to be a public API.  Unfortunately, on x86, neither gcc nor
+ * clang seems smart enough to turn
+ *   ticker->tick -= nticks;
+ *   if (unlikely(ticker->tick < 0)) {
+ *     fixup ticker
+ *     return true;
+ *   }
+ *   return false;
+ * into
+ *   subq %nticks_reg, (%ticker_reg)
+ *   js fixup ticker
+ *
+ * unless we force "fixup ticker" out of line.  In that case, gcc gets it right,
+ * but clang now does worse than before.  So, on x86 with gcc, we force it out
+ * of line, but otherwise let the inlining occur.  Ordinarily this wouldn't be
+ * worth the hassle, but this is on the fast path of both malloc and free (via
+ * tcache_event).
+ */
+#if defined(__GNUC__) && !defined(__clang__)				\
+    && (defined(__x86_64__) || defined(__i386__))
+JEMALLOC_NOINLINE
+#endif
+static bool
+ticker_fixup(ticker_t *ticker) {
+	ticker->tick = ticker->nticks;
+	return true;
+}
+
+static inline bool
+ticker_ticks(ticker_t *ticker, int32_t nticks) {
+	ticker->tick -= nticks;
+	if (unlikely(ticker->tick < 0)) {
+		return ticker_fixup(ticker);
+	}
+	return false;
+}
+
+static inline bool
+ticker_tick(ticker_t *ticker) {
+	return ticker_ticks(ticker, 1);
+}
+
+/*
+ * Try to tick.  If ticker would fire, return true, but rely on
+ * slowpath to reset ticker.
+ */
+static inline bool
+ticker_trytick(ticker_t *ticker) {
+	--ticker->tick;
+	if (unlikely(ticker->tick < 0)) {
+		return true;
+	}
+	return false;
+}
+
+/*
+ * The ticker_geom_t is much like the ticker_t, except that instead of ticker
+ * having a constant countdown, it has an approximate one; each tick has
+ * approximately a 1/nticks chance of triggering the count.
+ *
+ * The motivation is in triggering arena decay.  With a naive strategy, each
+ * thread would maintain a ticker per arena, and check if decay is necessary
+ * each time that the arena's ticker fires.  This has two costs:
+ * - Since under reasonable assumptions both threads and arenas can scale
+ *   linearly with the number of CPUs, maintaining per-arena data in each thread
+ *   scales quadratically with the number of CPUs.
+ * - These tickers are often a cache miss down tcache flush pathways.
+ *
+ * By giving each tick a 1/nticks chance of firing, we still maintain the same
+ * average number of ticks-until-firing per arena, with only a single ticker's
+ * worth of metadata.
+ */
+
+/* See ticker.c for an explanation of these constants. */
+#define TICKER_GEOM_NBITS 6
+#define TICKER_GEOM_MUL 61
+extern const uint8_t ticker_geom_table[1 << TICKER_GEOM_NBITS];
+
+/* Not actually any different from ticker_t; just for type safety. */
+typedef struct ticker_geom_s ticker_geom_t;
+struct ticker_geom_s {
+	int32_t tick;
+	int32_t nticks;
+};
+
+/*
+ * Just pick the average delay for the first counter.  We're more concerned with
+ * the behavior over long periods of time rather than the exact timing of the
+ * initial ticks.
+ */
+#define TICKER_GEOM_INIT(nticks) {nticks, nticks}
+
+static inline void
+ticker_geom_init(ticker_geom_t *ticker, int32_t nticks) {
+	/*
+	 * Make sure there's no overflow possible.  This shouldn't really be a
+	 * problem for reasonable nticks choices, which are all static and
+	 * relatively small.
+	 */
+	assert((uint64_t)nticks * (uint64_t)255 / (uint64_t)TICKER_GEOM_MUL
+	    <= (uint64_t)INT32_MAX);
+	ticker->tick = nticks;
+	ticker->nticks = nticks;
+}
+
+static inline int32_t
+ticker_geom_read(const ticker_geom_t *ticker) {
+	return ticker->tick;
+}
+
+/* Same deal as above. */
+#if defined(__GNUC__) && !defined(__clang__)				\
+    && (defined(__x86_64__) || defined(__i386__))
+JEMALLOC_NOINLINE
+#endif
+static bool
+ticker_geom_fixup(ticker_geom_t *ticker, uint64_t *prng_state) {
+	uint64_t idx = prng_lg_range_u64(prng_state, TICKER_GEOM_NBITS);
+	ticker->tick = (uint32_t)(
+	    (uint64_t)ticker->nticks * (uint64_t)ticker_geom_table[idx]
+	    / (uint64_t)TICKER_GEOM_MUL);
+	return true;
+}
+
+static inline bool
+ticker_geom_ticks(ticker_geom_t *ticker, uint64_t *prng_state, int32_t nticks) {
+	ticker->tick -= nticks;
+	if (unlikely(ticker->tick < 0)) {
+		return ticker_geom_fixup(ticker, prng_state);
+	}
+	return false;
+}
+
+static inline bool
+ticker_geom_tick(ticker_geom_t *ticker, uint64_t *prng_state) {
+	return ticker_geom_ticks(ticker, prng_state, 1);
+}
+
+#endif /* JEMALLOC_INTERNAL_TICKER_H */
diff --git a/deps/jemalloc/include/jemalloc/internal/tsd.h b/deps/jemalloc/include/jemalloc/internal/tsd.h
new file mode 100644
index 0000000..66d6882
--- /dev/null
+++ b/deps/jemalloc/include/jemalloc/internal/tsd.h
@@ -0,0 +1,518 @@
+#ifndef JEMALLOC_INTERNAL_TSD_H
+#define JEMALLOC_INTERNAL_TSD_H
+
+#include "jemalloc/internal/activity_callback.h"
+#include "jemalloc/internal/arena_types.h"
+#include "jemalloc/internal/assert.h"
+#include "jemalloc/internal/bin_types.h"
+#include "jemalloc/internal/jemalloc_internal_externs.h"
+#include "jemalloc/internal/peak.h"
+#include "jemalloc/internal/prof_types.h"
+#include "jemalloc/internal/ql.h"
+#include "jemalloc/internal/rtree_tsd.h"
+#include "jemalloc/internal/tcache_types.h"
+#include "jemalloc/internal/tcache_structs.h"
+#include "jemalloc/internal/util.h"
+#include "jemalloc/internal/witness.h"
+
+/*
+ * Thread-Specific-Data layout
+ *
+ * At least some thread-local data gets touched on the fast-path of almost all
+ * malloc operations.  But much of it is only necessary down slow-paths, or
+ * testing.  We want to colocate the fast-path data so that it can live on the
+ * same cacheline if possible.  So we define three tiers of hotness:
+ * TSD_DATA_FAST: Touched on the alloc/dalloc fast paths.
+ * TSD_DATA_SLOW: Touched down slow paths.  "Slow" here is sort of general;
+ *     there are "semi-slow" paths like "not a sized deallocation, but can still
+ *     live in the tcache".  We'll want to keep these closer to the fast-path
+ *     data.
+ * TSD_DATA_SLOWER: Only touched in test or debug modes, or not touched at all.
+ *
+ * An additional concern is that the larger tcache bins won't be used (we have a
+ * bin per size class, but by default only cache relatively small objects).  So
+ * the earlier bins are in the TSD_DATA_FAST tier, but the later ones are in the
+ * TSD_DATA_SLOWER tier.
+ *
+ * As a result of all this, we put the slow data first, then the fast data, then
+ * the slower data, while keeping the tcache as the last element of the fast
+ * data (so that the fast -> slower transition happens midway through the
+ * tcache).  While we don't yet play alignment tricks to guarantee it, this
+ * increases our odds of getting some cache/page locality on fast paths.
+ */
+
+#ifdef JEMALLOC_JET
+typedef void (*test_callback_t)(int *);
+#  define MALLOC_TSD_TEST_DATA_INIT 0x72b65c10
+#  define MALLOC_TEST_TSD \
+    O(test_data,		int,			int)		\
+    O(test_callback,		test_callback_t,	int)
+#  define MALLOC_TEST_TSD_INITIALIZER , MALLOC_TSD_TEST_DATA_INIT, NULL
+#else
+#  define MALLOC_TEST_TSD
+#  define MALLOC_TEST_TSD_INITIALIZER
+#endif
+
+typedef ql_elm(tsd_t) tsd_link_t;
+
+/*  O(name,			type,			nullable type) */
+#define TSD_DATA_SLOW							\
+    O(tcache_enabled,		bool,			bool)		\
+    O(reentrancy_level,		int8_t,			int8_t)		\
+    O(thread_allocated_last_event,	uint64_t,	uint64_t)	\
+    O(thread_allocated_next_event,	uint64_t,	uint64_t)	\
+    O(thread_deallocated_last_event,	uint64_t,	uint64_t)	\
+    O(thread_deallocated_next_event,	uint64_t,	uint64_t)	\
+    O(tcache_gc_event_wait,	uint64_t,		uint64_t)	\
+    O(tcache_gc_dalloc_event_wait,	uint64_t,	uint64_t)	\
+    O(prof_sample_event_wait,	uint64_t,		uint64_t)	\
+    O(prof_sample_last_event,	uint64_t,		uint64_t)	\
+    O(stats_interval_event_wait,	uint64_t,	uint64_t)	\
+    O(stats_interval_last_event,	uint64_t,	uint64_t)	\
+    O(peak_alloc_event_wait,	uint64_t,		uint64_t)	\
+    O(peak_dalloc_event_wait,	uint64_t,	uint64_t)		\
+    O(prof_tdata,		prof_tdata_t *,		prof_tdata_t *)	\
+    O(prng_state,		uint64_t,		uint64_t)	\
+    O(san_extents_until_guard_small,	uint64_t,	uint64_t)	\
+    O(san_extents_until_guard_large,	uint64_t,	uint64_t)	\
+    O(iarena,			arena_t *,		arena_t *)	\
+    O(arena,			arena_t *,		arena_t *)	\
+    O(arena_decay_ticker,	ticker_geom_t,		ticker_geom_t)	\
+    O(sec_shard,		uint8_t,		uint8_t)	\
+    O(binshards,		tsd_binshards_t,	tsd_binshards_t)\
+    O(tsd_link,			tsd_link_t,		tsd_link_t)	\
+    O(in_hook,			bool,			bool)		\
+    O(peak,			peak_t,			peak_t)		\
+    O(activity_callback_thunk,	activity_callback_thunk_t,		\
+	activity_callback_thunk_t)					\
+    O(tcache_slow,		tcache_slow_t,		tcache_slow_t)	\
+    O(rtree_ctx,		rtree_ctx_t,		rtree_ctx_t)
+
+#define TSD_DATA_SLOW_INITIALIZER					\
+    /* tcache_enabled */	TCACHE_ENABLED_ZERO_INITIALIZER,	\
+    /* reentrancy_level */	0,					\
+    /* thread_allocated_last_event */	0,				\
+    /* thread_allocated_next_event */	0,				\
+    /* thread_deallocated_last_event */	0,				\
+    /* thread_deallocated_next_event */	0,				\
+    /* tcache_gc_event_wait */		0,				\
+    /* tcache_gc_dalloc_event_wait */	0,				\
+    /* prof_sample_event_wait */	0,				\
+    /* prof_sample_last_event */	0,				\
+    /* stats_interval_event_wait */	0,				\
+    /* stats_interval_last_event */	0,				\
+    /* peak_alloc_event_wait */		0,				\
+    /* peak_dalloc_event_wait */	0,				\
+    /* prof_tdata */		NULL,					\
+    /* prng_state */		0,					\
+    /* san_extents_until_guard_small */	0,				\
+    /* san_extents_until_guard_large */	0,				\
+    /* iarena */		NULL,					\
+    /* arena */			NULL,					\
+    /* arena_decay_ticker */						\
+	TICKER_GEOM_INIT(ARENA_DECAY_NTICKS_PER_UPDATE),		\
+    /* sec_shard */		(uint8_t)-1,				\
+    /* binshards */		TSD_BINSHARDS_ZERO_INITIALIZER,		\
+    /* tsd_link */		{NULL},					\
+    /* in_hook */		false,					\
+    /* peak */			PEAK_INITIALIZER,			\
+    /* activity_callback_thunk */					\
+	ACTIVITY_CALLBACK_THUNK_INITIALIZER,				\
+    /* tcache_slow */		TCACHE_SLOW_ZERO_INITIALIZER,		\
+    /* rtree_ctx */		RTREE_CTX_INITIALIZER,
+
+/*  O(name,			type,			nullable type) */
+#define TSD_DATA_FAST							\
+    O(thread_allocated,		uint64_t,		uint64_t)	\
+    O(thread_allocated_next_event_fast,	uint64_t,	uint64_t)	\
+    O(thread_deallocated,	uint64_t,		uint64_t)	\
+    O(thread_deallocated_next_event_fast, uint64_t,	uint64_t)	\
+    O(tcache,			tcache_t,		tcache_t)
+
+#define TSD_DATA_FAST_INITIALIZER					\
+    /* thread_allocated */	0,					\
+    /* thread_allocated_next_event_fast */ 0, 				\
+    /* thread_deallocated */	0,					\
+    /* thread_deallocated_next_event_fast */	0,			\
+    /* tcache */		TCACHE_ZERO_INITIALIZER,
+
+/*  O(name,			type,			nullable type) */
+#define TSD_DATA_SLOWER							\
+    O(witness_tsd,              witness_tsd_t,		witness_tsdn_t)	\
+    MALLOC_TEST_TSD
+
+#define TSD_DATA_SLOWER_INITIALIZER					\
+    /* witness */		WITNESS_TSD_INITIALIZER			\
+    /* test data */		MALLOC_TEST_TSD_INITIALIZER
+
+
+#define TSD_INITIALIZER {						\
+    				TSD_DATA_SLOW_INITIALIZER		\
+    /* state */			ATOMIC_INIT(tsd_state_uninitialized),	\
+    				TSD_DATA_FAST_INITIALIZER		\
+    				TSD_DATA_SLOWER_INITIALIZER		\
+}
+
+#if defined(JEMALLOC_MALLOC_THREAD_CLEANUP) || defined(_WIN32)
+void _malloc_tsd_cleanup_register(bool (*f)(void));
+#endif
+
+void *malloc_tsd_malloc(size_t size);
+void malloc_tsd_dalloc(void *wrapper);
+tsd_t *malloc_tsd_boot0(void);
+void malloc_tsd_boot1(void);
+void tsd_cleanup(void *arg);
+tsd_t *tsd_fetch_slow(tsd_t *tsd, bool internal);
+void tsd_state_set(tsd_t *tsd, uint8_t new_state);
+void tsd_slow_update(tsd_t *tsd);
+void tsd_prefork(tsd_t *tsd);
+void tsd_postfork_parent(tsd_t *tsd);
+void tsd_postfork_child(tsd_t *tsd);
+
+/*
+ * Call ..._inc when your module wants to take all threads down the slow paths,
+ * and ..._dec when it no longer needs to.
+ */
+void tsd_global_slow_inc(tsdn_t *tsdn);
+void tsd_global_slow_dec(tsdn_t *tsdn);
+bool tsd_global_slow();
+
+enum {
+	/* Common case --> jnz. */
+	tsd_state_nominal = 0,
+	/* Initialized but on slow path. */
+	tsd_state_nominal_slow = 1,
+	/*
+	 * Some thread has changed global state in such a way that all nominal
+	 * threads need to recompute their fast / slow status the next time they
+	 * get a chance.
+	 *
+	 * Any thread can change another thread's status *to* recompute, but
+	 * threads are the only ones who can change their status *from*
+	 * recompute.
+	 */
+	tsd_state_nominal_recompute = 2,
+	/*
+	 * The above nominal states should be lower values.  We use
+	 * tsd_nominal_max to separate nominal states from threads in the
+	 * process of being born / dying.
+	 */
+	tsd_state_nominal_max = 2,
+
+	/*
+	 * A thread might free() during its death as its only allocator action;
+	 * in such scenarios, we need tsd, but set up in such a way that no
+	 * cleanup is necessary.
+	 */
+	tsd_state_minimal_initialized = 3,
+	/* States during which we know we're in thread death. */
+	tsd_state_purgatory = 4,
+	tsd_state_reincarnated = 5,
+	/*
+	 * What it says on the tin; tsd that hasn't been initialized.  Note
+	 * that even when the tsd struct lives in TLS, when need to keep track
+	 * of stuff like whether or not our pthread destructors have been
+	 * scheduled, so this really truly is different than the nominal state.
+	 */
+	tsd_state_uninitialized = 6
+};
+
+/*
+ * Some TSD accesses can only be done in a nominal state.  To enforce this, we
+ * wrap TSD member access in a function that asserts on TSD state, and mangle
+ * field names to prevent touching them accidentally.
+ */
+#define TSD_MANGLE(n) cant_access_tsd_items_directly_use_a_getter_or_setter_##n
+
+#ifdef JEMALLOC_U8_ATOMICS
+#  define tsd_state_t atomic_u8_t
+#  define tsd_atomic_load atomic_load_u8
+#  define tsd_atomic_store atomic_store_u8
+#  define tsd_atomic_exchange atomic_exchange_u8
+#else
+#  define tsd_state_t atomic_u32_t
+#  define tsd_atomic_load atomic_load_u32
+#  define tsd_atomic_store atomic_store_u32
+#  define tsd_atomic_exchange atomic_exchange_u32
+#endif
+
+/* The actual tsd. */
+struct tsd_s {
+	/*
+	 * The contents should be treated as totally opaque outside the tsd
+	 * module.  Access any thread-local state through the getters and
+	 * setters below.
+	 */
+
+#define O(n, t, nt)							\
+	t TSD_MANGLE(n);
+
+	TSD_DATA_SLOW
+	/*
+	 * We manually limit the state to just a single byte.  Unless the 8-bit
+	 * atomics are unavailable (which is rare).
+	 */
+	tsd_state_t state;
+	TSD_DATA_FAST
+	TSD_DATA_SLOWER
+#undef O
+};
+
+JEMALLOC_ALWAYS_INLINE uint8_t
+tsd_state_get(tsd_t *tsd) {
+	/*
+	 * This should be atomic.  Unfortunately, compilers right now can't tell
+	 * that this can be done as a memory comparison, and forces a load into
+	 * a register that hurts fast-path performance.
+	 */
+	/* return atomic_load_u8(&tsd->state, ATOMIC_RELAXED); */
+	return *(uint8_t *)&tsd->state;
+}
+
+/*
+ * Wrapper around tsd_t that makes it possible to avoid implicit conversion
+ * between tsd_t and tsdn_t, where tsdn_t is "nullable" and has to be
+ * explicitly converted to tsd_t, which is non-nullable.
+ */
+struct tsdn_s {
+	tsd_t tsd;
+};
+#define TSDN_NULL ((tsdn_t *)0)
+JEMALLOC_ALWAYS_INLINE tsdn_t *
+tsd_tsdn(tsd_t *tsd) {
+	return (tsdn_t *)tsd;
+}
+
+JEMALLOC_ALWAYS_INLINE bool
+tsdn_null(const tsdn_t *tsdn) {
+	return tsdn == NULL;
+}
+
+JEMALLOC_ALWAYS_INLINE tsd_t *
+tsdn_tsd(tsdn_t *tsdn) {
+	assert(!tsdn_null(tsdn));
+
+	return &tsdn->tsd;
+}
+
+/*
+ * We put the platform-specific data declarations and inlines into their own
+ * header files to avoid cluttering this file.  They define tsd_boot0,
+ * tsd_boot1, tsd_boot, tsd_booted_get, tsd_get_allocates, tsd_get, and tsd_set.
+ */
+#ifdef JEMALLOC_MALLOC_THREAD_CLEANUP
+#include "jemalloc/internal/tsd_malloc_thread_cleanup.h"
+#elif (defined(JEMALLOC_TLS))
+#include "jemalloc/internal/tsd_tls.h"
+#elif (defined(_WIN32))
+#include "jemalloc/internal/tsd_win.h"
+#else
+#include "jemalloc/internal/tsd_generic.h"
+#endif
+
+/*
+ * tsd_foop_get_unsafe(tsd) returns a pointer to the thread-local instance of
+ * foo.  This omits some safety checks, and so can be used during tsd
+ * initialization and cleanup.
+ */
+#define O(n, t, nt)							\
+JEMALLOC_ALWAYS_INLINE t *						\
+tsd_##n##p_get_unsafe(tsd_t *tsd) {					\
+	return &tsd->TSD_MANGLE(n);					\
+}
+TSD_DATA_SLOW
+TSD_DATA_FAST
+TSD_DATA_SLOWER
+#undef O
+
+/* tsd_foop_get(tsd) returns a pointer to the thread-local instance of foo. */
+#define O(n, t, nt)							\
+JEMALLOC_ALWAYS_INLINE t *						\
+tsd_##n##p_get(tsd_t *tsd) {						\
+	/*								\
+	 * Because the state might change asynchronously if it's	\
+	 * nominal, we need to make sure that we only read it once.	\
+	 */								\
+	uint8_t state = tsd_state_get(tsd);				\
+	assert(state == tsd_state_nominal ||				\
+	    state == tsd_state_nominal_slow ||				\
+	    state == tsd_state_nominal_recompute ||			\
+	    state == tsd_state_reincarnated ||				\
+	    state == tsd_state_minimal_initialized);			\
+	return tsd_##n##p_get_unsafe(tsd);				\
+}
+TSD_DATA_SLOW
+TSD_DATA_FAST
+TSD_DATA_SLOWER
+#undef O
+
+/*
+ * tsdn_foop_get(tsdn) returns either the thread-local instance of foo (if tsdn
+ * isn't NULL), or NULL (if tsdn is NULL), cast to the nullable pointer type.
+ */
+#define O(n, t, nt)							\
+JEMALLOC_ALWAYS_INLINE nt *						\
+tsdn_##n##p_get(tsdn_t *tsdn) {						\
+	if (tsdn_null(tsdn)) {						\
+		return NULL;						\
+	}								\
+	tsd_t *tsd = tsdn_tsd(tsdn);					\
+	return (nt *)tsd_##n##p_get(tsd);				\
+}
+TSD_DATA_SLOW
+TSD_DATA_FAST
+TSD_DATA_SLOWER
+#undef O
+
+/* tsd_foo_get(tsd) returns the value of the thread-local instance of foo. */
+#define O(n, t, nt)							\
+JEMALLOC_ALWAYS_INLINE t						\
+tsd_##n##_get(tsd_t *tsd) {						\
+	return *tsd_##n##p_get(tsd);					\
+}
+TSD_DATA_SLOW
+TSD_DATA_FAST
+TSD_DATA_SLOWER
+#undef O
+
+/* tsd_foo_set(tsd, val) updates the thread-local instance of foo to be val. */
+#define O(n, t, nt)							\
+JEMALLOC_ALWAYS_INLINE void						\
+tsd_##n##_set(tsd_t *tsd, t val) {					\
+	assert(tsd_state_get(tsd) != tsd_state_reincarnated &&		\
+	    tsd_state_get(tsd) != tsd_state_minimal_initialized);	\
+	*tsd_##n##p_get(tsd) = val;					\
+}
+TSD_DATA_SLOW
+TSD_DATA_FAST
+TSD_DATA_SLOWER
+#undef O
+
+JEMALLOC_ALWAYS_INLINE void
+tsd_assert_fast(tsd_t *tsd) {
+	/*
+	 * Note that our fastness assertion does *not* include global slowness
+	 * counters; it's not in general possible to ensure that they won't
+	 * change asynchronously from underneath us.
+	 */
+	assert(!malloc_slow && tsd_tcache_enabled_get(tsd) &&
+	    tsd_reentrancy_level_get(tsd) == 0);
+}
+
+JEMALLOC_ALWAYS_INLINE bool
+tsd_fast(tsd_t *tsd) {
+	bool fast = (tsd_state_get(tsd) == tsd_state_nominal);
+	if (fast) {
+		tsd_assert_fast(tsd);
+	}
+
+	return fast;
+}
+
+JEMALLOC_ALWAYS_INLINE tsd_t *
+tsd_fetch_impl(bool init, bool minimal) {
+	tsd_t *tsd = tsd_get(init);
+
+	if (!init && tsd_get_allocates() && tsd == NULL) {
+		return NULL;
+	}
+	assert(tsd != NULL);
+
+	if (unlikely(tsd_state_get(tsd) != tsd_state_nominal)) {
+		return tsd_fetch_slow(tsd, minimal);
+	}
+	assert(tsd_fast(tsd));
+	tsd_assert_fast(tsd);
+
+	return tsd;
+}
+
+/* Get a minimal TSD that requires no cleanup.  See comments in free(). */
+JEMALLOC_ALWAYS_INLINE tsd_t *
+tsd_fetch_min(void) {
+	return tsd_fetch_impl(true, true);
+}
+
+/* For internal background threads use only. */
+JEMALLOC_ALWAYS_INLINE tsd_t *
+tsd_internal_fetch(void) {
+	tsd_t *tsd = tsd_fetch_min();
+	/* Use reincarnated state to prevent full initialization. */
+	tsd_state_set(tsd, tsd_state_reincarnated);
+
+	return tsd;
+}
+
+JEMALLOC_ALWAYS_INLINE tsd_t *
+tsd_fetch(void) {
+	return tsd_fetch_impl(true, false);
+}
+
+static inline bool
+tsd_nominal(tsd_t *tsd) {
+	bool nominal = tsd_state_get(tsd) <= tsd_state_nominal_max;
+	assert(nominal || tsd_reentrancy_level_get(tsd) > 0);
+
+	return nominal;
+}
+
+JEMALLOC_ALWAYS_INLINE tsdn_t *
+tsdn_fetch(void) {
+	if (!tsd_booted_get()) {
+		return NULL;
+	}
+
+	return tsd_tsdn(tsd_fetch_impl(false, false));
+}
+
+JEMALLOC_ALWAYS_INLINE rtree_ctx_t *
+tsd_rtree_ctx(tsd_t *tsd) {
+	return tsd_rtree_ctxp_get(tsd);
+}
+
+JEMALLOC_ALWAYS_INLINE rtree_ctx_t *
+tsdn_rtree_ctx(tsdn_t *tsdn, rtree_ctx_t *fallback) {
+	/*
+	 * If tsd cannot be accessed, initialize the fallback rtree_ctx and
+	 * return a pointer to it.
+	 */
+	if (unlikely(tsdn_null(tsdn))) {
+		rtree_ctx_data_init(fallback);
+		return fallback;
+	}
+	return tsd_rtree_ctx(tsdn_tsd(tsdn));
+}
+
+static inline bool
+tsd_state_nocleanup(tsd_t *tsd) {
+	return tsd_state_get(tsd) == tsd_state_reincarnated ||
+	    tsd_state_get(tsd) == tsd_state_minimal_initialized;
+}
+
+/*
+ * These "raw" tsd reentrancy functions don't have any debug checking to make
+ * sure that we're not touching arena 0.  Better is to call pre_reentrancy and
+ * post_reentrancy if this is possible.
+ */
+static inline void
+tsd_pre_reentrancy_raw(tsd_t *tsd) {
+	bool fast = tsd_fast(tsd);
+	assert(tsd_reentrancy_level_get(tsd) < INT8_MAX);
+	++*tsd_reentrancy_levelp_get(tsd);
+	if (fast) {
+		/* Prepare slow path for reentrancy. */
+		tsd_slow_update(tsd);
+		assert(tsd_state_get(tsd) == tsd_state_nominal_slow);
+	}
+}
+
+static inline void
+tsd_post_reentrancy_raw(tsd_t *tsd) {
+	int8_t *reentrancy_level = tsd_reentrancy_levelp_get(tsd);
+	assert(*reentrancy_level > 0);
+	if (--*reentrancy_level == 0) {
+		tsd_slow_update(tsd);
+	}
+}
+
+#endif /* JEMALLOC_INTERNAL_TSD_H */
diff --git a/deps/jemalloc/include/jemalloc/internal/tsd_generic.h b/deps/jemalloc/include/jemalloc/internal/tsd_generic.h
new file mode 100644
index 0000000..a718472
--- /dev/null
+++ b/deps/jemalloc/include/jemalloc/internal/tsd_generic.h
@@ -0,0 +1,182 @@
+#ifdef JEMALLOC_INTERNAL_TSD_GENERIC_H
+#error This file should be included only once, by tsd.h.
+#endif
+#define JEMALLOC_INTERNAL_TSD_GENERIC_H
+
+typedef struct tsd_init_block_s tsd_init_block_t;
+struct tsd_init_block_s {
+	ql_elm(tsd_init_block_t) link;
+	pthread_t thread;
+	void *data;
+};
+
+/* Defined in tsd.c, to allow the mutex headers to have tsd dependencies. */
+typedef struct tsd_init_head_s tsd_init_head_t;
+
+typedef struct {
+	bool initialized;
+	tsd_t val;
+} tsd_wrapper_t;
+
+void *tsd_init_check_recursion(tsd_init_head_t *head,
+    tsd_init_block_t *block);
+void tsd_init_finish(tsd_init_head_t *head, tsd_init_block_t *block);
+
+extern pthread_key_t tsd_tsd;
+extern tsd_init_head_t tsd_init_head;
+extern tsd_wrapper_t tsd_boot_wrapper;
+extern bool tsd_booted;
+
+/* Initialization/cleanup. */
+JEMALLOC_ALWAYS_INLINE void
+tsd_cleanup_wrapper(void *arg) {
+	tsd_wrapper_t *wrapper = (tsd_wrapper_t *)arg;
+
+	if (wrapper->initialized) {
+		wrapper->initialized = false;
+		tsd_cleanup(&wrapper->val);
+		if (wrapper->initialized) {
+			/* Trigger another cleanup round. */
+			if (pthread_setspecific(tsd_tsd, (void *)wrapper) != 0)
+			{
+				malloc_write("<jemalloc>: Error setting TSD\n");
+				if (opt_abort) {
+					abort();
+				}
+			}
+			return;
+		}
+	}
+	malloc_tsd_dalloc(wrapper);
+}
+
+JEMALLOC_ALWAYS_INLINE void
+tsd_wrapper_set(tsd_wrapper_t *wrapper) {
+	if (unlikely(!tsd_booted)) {
+		return;
+	}
+	if (pthread_setspecific(tsd_tsd, (void *)wrapper) != 0) {
+		malloc_write("<jemalloc>: Error setting TSD\n");
+		abort();
+	}
+}
+
+JEMALLOC_ALWAYS_INLINE tsd_wrapper_t *
+tsd_wrapper_get(bool init) {
+	tsd_wrapper_t *wrapper;
+
+	if (unlikely(!tsd_booted)) {
+		return &tsd_boot_wrapper;
+	}
+
+	wrapper = (tsd_wrapper_t *)pthread_getspecific(tsd_tsd);
+
+	if (init && unlikely(wrapper == NULL)) {
+		tsd_init_block_t block;
+		wrapper = (tsd_wrapper_t *)
+		    tsd_init_check_recursion(&tsd_init_head, &block);
+		if (wrapper) {
+			return wrapper;
+		}
+		wrapper = (tsd_wrapper_t *)
+		    malloc_tsd_malloc(sizeof(tsd_wrapper_t));
+		block.data = (void *)wrapper;
+		if (wrapper == NULL) {
+			malloc_write("<jemalloc>: Error allocating TSD\n");
+			abort();
+		} else {
+			wrapper->initialized = false;
+      JEMALLOC_DIAGNOSTIC_PUSH
+      JEMALLOC_DIAGNOSTIC_IGNORE_MISSING_STRUCT_FIELD_INITIALIZERS
+			tsd_t initializer = TSD_INITIALIZER;
+      JEMALLOC_DIAGNOSTIC_POP
+			wrapper->val = initializer;
+		}
+		tsd_wrapper_set(wrapper);
+		tsd_init_finish(&tsd_init_head, &block);
+	}
+	return wrapper;
+}
+
+JEMALLOC_ALWAYS_INLINE bool
+tsd_boot0(void) {
+	tsd_wrapper_t *wrapper;
+	tsd_init_block_t block;
+
+	wrapper = (tsd_wrapper_t *)
+	    tsd_init_check_recursion(&tsd_init_head, &block);
+	if (wrapper) {
+		return false;
+	}
+	block.data = &tsd_boot_wrapper;
+	if (pthread_key_create(&tsd_tsd, tsd_cleanup_wrapper) != 0) {
+		return true;
+	}
+	tsd_booted = true;
+	tsd_wrapper_set(&tsd_boot_wrapper);
+	tsd_init_finish(&tsd_init_head, &block);
+	return false;
+}
+
+JEMALLOC_ALWAYS_INLINE void
+tsd_boot1(void) {
+	tsd_wrapper_t *wrapper;
+	wrapper = (tsd_wrapper_t *)malloc_tsd_malloc(sizeof(tsd_wrapper_t));
+	if (wrapper == NULL) {
+		malloc_write("<jemalloc>: Error allocating TSD\n");
+		abort();
+	}
+	tsd_boot_wrapper.initialized = false;
+	tsd_cleanup(&tsd_boot_wrapper.val);
+	wrapper->initialized = false;
+  JEMALLOC_DIAGNOSTIC_PUSH
+  JEMALLOC_DIAGNOSTIC_IGNORE_MISSING_STRUCT_FIELD_INITIALIZERS
+	tsd_t initializer = TSD_INITIALIZER;
+  JEMALLOC_DIAGNOSTIC_POP
+	wrapper->val = initializer;
+	tsd_wrapper_set(wrapper);
+}
+
+JEMALLOC_ALWAYS_INLINE bool
+tsd_boot(void) {
+	if (tsd_boot0()) {
+		return true;
+	}
+	tsd_boot1();
+	return false;
+}
+
+JEMALLOC_ALWAYS_INLINE bool
+tsd_booted_get(void) {
+	return tsd_booted;
+}
+
+JEMALLOC_ALWAYS_INLINE bool
+tsd_get_allocates(void) {
+	return true;
+}
+
+/* Get/set. */
+JEMALLOC_ALWAYS_INLINE tsd_t *
+tsd_get(bool init) {
+	tsd_wrapper_t *wrapper;
+
+	assert(tsd_booted);
+	wrapper = tsd_wrapper_get(init);
+	if (tsd_get_allocates() && !init && wrapper == NULL) {
+		return NULL;
+	}
+	return &wrapper->val;
+}
+
+JEMALLOC_ALWAYS_INLINE void
+tsd_set(tsd_t *val) {
+	tsd_wrapper_t *wrapper;
+
+	assert(tsd_booted);
+	wrapper = tsd_wrapper_get(true);
+	if (likely(&wrapper->val != val)) {
+		wrapper->val = *(val);
+	}
+	wrapper->initialized = true;
+}
diff --git a/deps/jemalloc/include/jemalloc/internal/tsd_malloc_thread_cleanup.h b/deps/jemalloc/include/jemalloc/internal/tsd_malloc_thread_cleanup.h
new file mode 100644
index 0000000..d8f3ef1
--- /dev/null
+++ b/deps/jemalloc/include/jemalloc/internal/tsd_malloc_thread_cleanup.h
@@ -0,0 +1,61 @@
+#ifdef JEMALLOC_INTERNAL_TSD_MALLOC_THREAD_CLEANUP_H
+#error This file should be included only once, by tsd.h.
+#endif
+#define JEMALLOC_INTERNAL_TSD_MALLOC_THREAD_CLEANUP_H
+
+#define JEMALLOC_TSD_TYPE_ATTR(type) __thread type JEMALLOC_TLS_MODEL
+
+extern JEMALLOC_TSD_TYPE_ATTR(tsd_t) tsd_tls;
+extern JEMALLOC_TSD_TYPE_ATTR(bool) tsd_initialized;
+extern bool tsd_booted;
+
+/* Initialization/cleanup. */
+JEMALLOC_ALWAYS_INLINE bool
+tsd_cleanup_wrapper(void) {
+	if (tsd_initialized) {
+		tsd_initialized = false;
+		tsd_cleanup(&tsd_tls);
+	}
+	return tsd_initialized;
+}
+
+JEMALLOC_ALWAYS_INLINE bool
+tsd_boot0(void) {
+	_malloc_tsd_cleanup_register(&tsd_cleanup_wrapper);
+	tsd_booted = true;
+	return false;
+}
+
+JEMALLOC_ALWAYS_INLINE void
+tsd_boot1(void) {
+	/* Do nothing. */
+}
+
+JEMALLOC_ALWAYS_INLINE bool
+tsd_boot(void) {
+	return tsd_boot0();
+}
+
+JEMALLOC_ALWAYS_INLINE bool
+tsd_booted_get(void) {
+	return tsd_booted;
+}
+
+JEMALLOC_ALWAYS_INLINE bool
+tsd_get_allocates(void) {
+	return false;
+}
+
+/* Get/set. */
+JEMALLOC_ALWAYS_INLINE tsd_t *
+tsd_get(bool init) {
+	return &tsd_tls;
+}
+JEMALLOC_ALWAYS_INLINE void
+tsd_set(tsd_t *val) {
+	assert(tsd_booted);
+	if (likely(&tsd_tls != val)) {
+		tsd_tls = (*val);
+	}
+	tsd_initialized = true;
+}
diff --git a/deps/jemalloc/include/jemalloc/internal/tsd_tls.h b/deps/jemalloc/include/jemalloc/internal/tsd_tls.h
new file mode 100644
index 0000000..7d6c805
--- /dev/null
+++ b/deps/jemalloc/include/jemalloc/internal/tsd_tls.h
@@ -0,0 +1,60 @@
+#ifdef JEMALLOC_INTERNAL_TSD_TLS_H
+#error This file should be included only once, by tsd.h.
+#endif
+#define JEMALLOC_INTERNAL_TSD_TLS_H
+
+#define JEMALLOC_TSD_TYPE_ATTR(type) __thread type JEMALLOC_TLS_MODEL
+
+extern JEMALLOC_TSD_TYPE_ATTR(tsd_t) tsd_tls;
+extern pthread_key_t tsd_tsd;
+extern bool tsd_booted;
+
+/* Initialization/cleanup. */
+JEMALLOC_ALWAYS_INLINE bool
+tsd_boot0(void) {
+	if (pthread_key_create(&tsd_tsd, &tsd_cleanup) != 0) {
+		return true;
+	}
+	tsd_booted = true;
+	return false;
+}
+
+JEMALLOC_ALWAYS_INLINE void
+tsd_boot1(void) {
+	/* Do nothing. */
+}
+
+JEMALLOC_ALWAYS_INLINE bool
+tsd_boot(void) {
+	return tsd_boot0();
+}
+
+JEMALLOC_ALWAYS_INLINE bool
+tsd_booted_get(void) {
+	return tsd_booted;
+}
+
+JEMALLOC_ALWAYS_INLINE bool
+tsd_get_allocates(void) {
+	return false;
+}
+
+/* Get/set. */
+JEMALLOC_ALWAYS_INLINE tsd_t *
+tsd_get(bool init) {
+	return &tsd_tls;
+}
+
+JEMALLOC_ALWAYS_INLINE void
+tsd_set(tsd_t *val) {
+	assert(tsd_booted);
+	if (likely(&tsd_tls != val)) {
+		tsd_tls = (*val);
+	}
+	if (pthread_setspecific(tsd_tsd, (void *)(&tsd_tls)) != 0) {
+		malloc_write("<jemalloc>: Error setting tsd.\n");
+		if (opt_abort) {
+			abort();
+		}
+	}
+}
diff --git a/deps/jemalloc/include/jemalloc/internal/tsd_types.h b/deps/jemalloc/include/jemalloc/internal/tsd_types.h
new file mode 100644
index 0000000..a6ae37d
--- /dev/null
+++ b/deps/jemalloc/include/jemalloc/internal/tsd_types.h
@@ -0,0 +1,10 @@
+#ifndef JEMALLOC_INTERNAL_TSD_TYPES_H
+#define JEMALLOC_INTERNAL_TSD_TYPES_H
+
+#define MALLOC_TSD_CLEANUPS_MAX	4
+
+typedef struct tsd_s tsd_t;
+typedef struct tsdn_s tsdn_t;
+typedef bool (*malloc_tsd_cleanup_t)(void);
+
+#endif /* JEMALLOC_INTERNAL_TSD_TYPES_H */
diff --git a/deps/jemalloc/include/jemalloc/internal/tsd_win.h b/deps/jemalloc/include/jemalloc/internal/tsd_win.h
new file mode 100644
index 0000000..a91dac8
--- /dev/null
+++ b/deps/jemalloc/include/jemalloc/internal/tsd_win.h
@@ -0,0 +1,139 @@
+#ifdef JEMALLOC_INTERNAL_TSD_WIN_H
+#error This file should be included only once, by tsd.h.
+#endif
+#define JEMALLOC_INTERNAL_TSD_WIN_H
+
+typedef struct {
+	bool initialized;
+	tsd_t val;
+} tsd_wrapper_t;
+
+extern DWORD tsd_tsd;
+extern tsd_wrapper_t tsd_boot_wrapper;
+extern bool tsd_booted;
+
+/* Initialization/cleanup. */
+JEMALLOC_ALWAYS_INLINE bool
+tsd_cleanup_wrapper(void) {
+	DWORD error = GetLastError();
+	tsd_wrapper_t *wrapper = (tsd_wrapper_t *)TlsGetValue(tsd_tsd);
+	SetLastError(error);
+
+	if (wrapper == NULL) {
+		return false;
+	}
+
+	if (wrapper->initialized) {
+		wrapper->initialized = false;
+		tsd_cleanup(&wrapper->val);
+		if (wrapper->initialized) {
+			/* Trigger another cleanup round. */
+			return true;
+		}
+	}
+	malloc_tsd_dalloc(wrapper);
+	return false;
+}
+
+JEMALLOC_ALWAYS_INLINE void
+tsd_wrapper_set(tsd_wrapper_t *wrapper) {
+	if (!TlsSetValue(tsd_tsd, (void *)wrapper)) {
+		malloc_write("<jemalloc>: Error setting TSD\n");
+		abort();
+	}
+}
+
+JEMALLOC_ALWAYS_INLINE tsd_wrapper_t *
+tsd_wrapper_get(bool init) {
+	DWORD error = GetLastError();
+	tsd_wrapper_t *wrapper = (tsd_wrapper_t *) TlsGetValue(tsd_tsd);
+	SetLastError(error);
+
+	if (init && unlikely(wrapper == NULL)) {
+		wrapper = (tsd_wrapper_t *)
+		    malloc_tsd_malloc(sizeof(tsd_wrapper_t));
+		if (wrapper == NULL) {
+			malloc_write("<jemalloc>: Error allocating TSD\n");
+			abort();
+		} else {
+			wrapper->initialized = false;
+			/* MSVC is finicky about aggregate initialization. */
+			tsd_t tsd_initializer = TSD_INITIALIZER;
+			wrapper->val = tsd_initializer;
+		}
+		tsd_wrapper_set(wrapper);
+	}
+	return wrapper;
+}
+
+JEMALLOC_ALWAYS_INLINE bool
+tsd_boot0(void) {
+	tsd_tsd = TlsAlloc();
+	if (tsd_tsd == TLS_OUT_OF_INDEXES) {
+		return true;
+	}
+	_malloc_tsd_cleanup_register(&tsd_cleanup_wrapper);
+	tsd_wrapper_set(&tsd_boot_wrapper);
+	tsd_booted = true;
+	return false;
+}
+
+JEMALLOC_ALWAYS_INLINE void
+tsd_boot1(void) {
+	tsd_wrapper_t *wrapper;
+	wrapper = (tsd_wrapper_t *)
+	    malloc_tsd_malloc(sizeof(tsd_wrapper_t));
+	if (wrapper == NULL) {
+		malloc_write("<jemalloc>: Error allocating TSD\n");
+		abort();
+	}
+	tsd_boot_wrapper.initialized = false;
+	tsd_cleanup(&tsd_boot_wrapper.val);
+	wrapper->initialized = false;
+	tsd_t initializer = TSD_INITIALIZER;
+	wrapper->val = initializer;
+	tsd_wrapper_set(wrapper);
+}
+JEMALLOC_ALWAYS_INLINE bool
+tsd_boot(void) {
+	if (tsd_boot0()) {
+		return true;
+	}
+	tsd_boot1();
+	return false;
+}
+
+JEMALLOC_ALWAYS_INLINE bool
+tsd_booted_get(void) {
+	return tsd_booted;
+}
+
+JEMALLOC_ALWAYS_INLINE bool
+tsd_get_allocates(void) {
+	return true;
+}
+
+/* Get/set. */
+JEMALLOC_ALWAYS_INLINE tsd_t *
+tsd_get(bool init) {
+	tsd_wrapper_t *wrapper;
+
+	assert(tsd_booted);
+	wrapper = tsd_wrapper_get(init);
+	if (tsd_get_allocates() && !init && wrapper == NULL) {
+		return NULL;
+	}
+	return &wrapper->val;
+}
+
+JEMALLOC_ALWAYS_INLINE void
+tsd_set(tsd_t *val) {
+	tsd_wrapper_t *wrapper;
+
+	assert(tsd_booted);
+	wrapper = tsd_wrapper_get(true);
+	if (likely(&wrapper->val != val)) {
+		wrapper->val = *(val);
+	}
+	wrapper->initialized = true;
+}
diff --git a/deps/jemalloc/include/jemalloc/internal/typed_list.h b/deps/jemalloc/include/jemalloc/internal/typed_list.h
new file mode 100644
index 0000000..6535055
--- /dev/null
+++ b/deps/jemalloc/include/jemalloc/internal/typed_list.h
@@ -0,0 +1,55 @@
+#ifndef JEMALLOC_INTERNAL_TYPED_LIST_H
+#define JEMALLOC_INTERNAL_TYPED_LIST_H
+
+/*
+ * This wraps the ql module to implement a list class in a way that's a little
+ * bit easier to use; it handles ql_elm_new calls and provides type safety.
+ */
+
+#define TYPED_LIST(list_type, el_type, linkage)				\
+typedef struct {							\
+	ql_head(el_type) head;						\
+} list_type##_t;							\
+static inline void							\
+list_type##_init(list_type##_t *list) {					\
+	ql_new(&list->head);						\
+}									\
+static inline el_type *							\
+list_type##_first(const list_type##_t *list) {				\
+	return ql_first(&list->head);					\
+}									\
+static inline el_type *							\
+list_type##_last(const list_type##_t *list) {				\
+	return ql_last(&list->head, linkage);				\
+}									\
+static inline void							\
+list_type##_append(list_type##_t *list, el_type *item) {		\
+	ql_elm_new(item, linkage);					\
+	ql_tail_insert(&list->head, item, linkage);			\
+}									\
+static inline void							\
+list_type##_prepend(list_type##_t *list, el_type *item) {		\
+	ql_elm_new(item, linkage);					\
+	ql_head_insert(&list->head, item, linkage);			\
+}									\
+static inline void							\
+list_type##_replace(list_type##_t *list, el_type *to_remove,		\
+    el_type *to_insert) {						\
+	ql_elm_new(to_insert, linkage);					\
+	ql_after_insert(to_remove, to_insert, linkage);			\
+	ql_remove(&list->head, to_remove, linkage);			\
+}									\
+static inline void							\
+list_type##_remove(list_type##_t *list, el_type *item) {		\
+	ql_remove(&list->head, item, linkage);				\
+}									\
+static inline bool							\
+list_type##_empty(list_type##_t *list) {				\
+	return ql_empty(&list->head);					\
+}									\
+static inline void							\
+list_type##_concat(list_type##_t *list_a, list_type##_t *list_b) {	\
+	ql_concat(&list_a->head, &list_b->head, linkage);		\
+}
+
+#endif /* JEMALLOC_INTERNAL_TYPED_LIST_H */
diff --git a/deps/jemalloc/include/jemalloc/internal/util.h b/deps/jemalloc/include/jemalloc/internal/util.h
new file mode 100644
index 0000000..dcb1c0a
--- /dev/null
+++ b/deps/jemalloc/include/jemalloc/internal/util.h
@@ -0,0 +1,123 @@
+#ifndef JEMALLOC_INTERNAL_UTIL_H
+#define JEMALLOC_INTERNAL_UTIL_H
+
+#define UTIL_INLINE static inline
+
+/* Junk fill patterns. */
+#ifndef JEMALLOC_ALLOC_JUNK
+#  define JEMALLOC_ALLOC_JUNK	((uint8_t)0xa5)
+#endif
+#ifndef JEMALLOC_FREE_JUNK
+#  define JEMALLOC_FREE_JUNK	((uint8_t)0x5a)
+#endif
+
+/*
+ * Wrap a cpp argument that contains commas such that it isn't broken up into
+ * multiple arguments.
+ */
+#define JEMALLOC_ARG_CONCAT(...) __VA_ARGS__
+
+/* cpp macro definition stringification. */
+#define STRINGIFY_HELPER(x) #x
+#define STRINGIFY(x) STRINGIFY_HELPER(x)
+
+/*
+ * Silence compiler warnings due to uninitialized values.  This is used
+ * wherever the compiler fails to recognize that the variable is never used
+ * uninitialized.
+ */
+#define JEMALLOC_CC_SILENCE_INIT(v) = v
+
+#ifdef __GNUC__
+#  define likely(x)   __builtin_expect(!!(x), 1)
+#  define unlikely(x) __builtin_expect(!!(x), 0)
+#else
+#  define likely(x)   !!(x)
+#  define unlikely(x) !!(x)
+#endif
+
+#if !defined(JEMALLOC_INTERNAL_UNREACHABLE)
+#  error JEMALLOC_INTERNAL_UNREACHABLE should have been defined by configure
+#endif
+
+#define unreachable() JEMALLOC_INTERNAL_UNREACHABLE()
+
+/* Set error code. */
+UTIL_INLINE void
+set_errno(int errnum) {
+#ifdef _WIN32
+	SetLastError(errnum);
+#else
+	errno = errnum;
+#endif
+}
+
+/* Get last error code. */
+UTIL_INLINE int
+get_errno(void) {
+#ifdef _WIN32
+	return GetLastError();
+#else
+	return errno;
+#endif
+}
+
+JEMALLOC_ALWAYS_INLINE void
+util_assume(bool b) {
+	if (!b) {
+		unreachable();
+	}
+}
+
+/* ptr should be valid. */
+JEMALLOC_ALWAYS_INLINE void
+util_prefetch_read(void *ptr) {
+	/*
+	 * This should arguably be a config check; but any version of GCC so old
+	 * that it doesn't support __builtin_prefetch is also too old to build
+	 * jemalloc.
+	 */
+#ifdef __GNUC__
+	if (config_debug) {
+		/* Enforce the "valid ptr" requirement. */
+		*(volatile char *)ptr;
+	}
+	__builtin_prefetch(ptr, /* read or write */ 0, /* locality hint */ 3);
+#else
+	*(volatile char *)ptr;
+#endif
+}
+
+JEMALLOC_ALWAYS_INLINE void
+util_prefetch_write(void *ptr) {
+#ifdef __GNUC__
+	if (config_debug) {
+		*(volatile char *)ptr;
+	}
+	/*
+	 * The only difference from the read variant is that this has a 1 as the
+	 * second argument (the write hint).
+	 */
+	__builtin_prefetch(ptr, 1, 3);
+#else
+	*(volatile char *)ptr;
+#endif
+}
+
+JEMALLOC_ALWAYS_INLINE void
+util_prefetch_read_range(void *ptr, size_t sz) {
+	for (size_t i = 0; i < sz; i += CACHELINE) {
+		util_prefetch_read((void *)((uintptr_t)ptr + i));
+	}
+}
+
+JEMALLOC_ALWAYS_INLINE void
+util_prefetch_write_range(void *ptr, size_t sz) {
+	for (size_t i = 0; i < sz; i += CACHELINE) {
+		util_prefetch_write((void *)((uintptr_t)ptr + i));
+	}
+}
+
+#undef UTIL_INLINE
+
+#endif /* JEMALLOC_INTERNAL_UTIL_H */
diff --git a/deps/jemalloc/include/jemalloc/internal/witness.h b/deps/jemalloc/include/jemalloc/internal/witness.h
new file mode 100644
index 0000000..e81b9a0
--- /dev/null
+++ b/deps/jemalloc/include/jemalloc/internal/witness.h
@@ -0,0 +1,378 @@
+#ifndef JEMALLOC_INTERNAL_WITNESS_H
+#define JEMALLOC_INTERNAL_WITNESS_H
+
+#include "jemalloc/internal/ql.h"
+
+/******************************************************************************/
+/* LOCK RANKS */
+/******************************************************************************/
+
+enum witness_rank_e {
+	/*
+	 * Order matters within this enum listing -- higher valued locks can
+	 * only be acquired after lower-valued ones.  We use the
+	 * auto-incrementing-ness of enum values to enforce this.
+	 */
+
+	/*
+	 * Witnesses with rank WITNESS_RANK_OMIT are completely ignored by the
+	 * witness machinery.
+	 */
+	WITNESS_RANK_OMIT,
+	WITNESS_RANK_MIN,
+	WITNESS_RANK_INIT = WITNESS_RANK_MIN,
+	WITNESS_RANK_CTL,
+	WITNESS_RANK_TCACHES,
+	WITNESS_RANK_ARENAS,
+	WITNESS_RANK_BACKGROUND_THREAD_GLOBAL,
+	WITNESS_RANK_PROF_DUMP,
+	WITNESS_RANK_PROF_BT2GCTX,
+	WITNESS_RANK_PROF_TDATAS,
+	WITNESS_RANK_PROF_TDATA,
+	WITNESS_RANK_PROF_LOG,
+	WITNESS_RANK_PROF_GCTX,
+	WITNESS_RANK_PROF_RECENT_DUMP,
+	WITNESS_RANK_BACKGROUND_THREAD,
+	/*
+	 * Used as an argument to witness_assert_depth_to_rank() in order to
+	 * validate depth excluding non-core locks with lower ranks.  Since the
+	 * rank argument to witness_assert_depth_to_rank() is inclusive rather
+	 * than exclusive, this definition can have the same value as the
+	 * minimally ranked core lock.
+	 */
+	WITNESS_RANK_CORE,
+	WITNESS_RANK_DECAY = WITNESS_RANK_CORE,
+	WITNESS_RANK_TCACHE_QL,
+
+	WITNESS_RANK_SEC_SHARD,
+
+	WITNESS_RANK_EXTENT_GROW,
+	WITNESS_RANK_HPA_SHARD_GROW = WITNESS_RANK_EXTENT_GROW,
+	WITNESS_RANK_SAN_BUMP_ALLOC = WITNESS_RANK_EXTENT_GROW,
+
+	WITNESS_RANK_EXTENTS,
+	WITNESS_RANK_HPA_SHARD = WITNESS_RANK_EXTENTS,
+
+	WITNESS_RANK_HPA_CENTRAL_GROW,
+	WITNESS_RANK_HPA_CENTRAL,
+
+	WITNESS_RANK_EDATA_CACHE,
+
+	WITNESS_RANK_RTREE,
+	WITNESS_RANK_BASE,
+	WITNESS_RANK_ARENA_LARGE,
+	WITNESS_RANK_HOOK,
+
+	WITNESS_RANK_LEAF=0x1000,
+	WITNESS_RANK_BIN = WITNESS_RANK_LEAF,
+	WITNESS_RANK_ARENA_STATS = WITNESS_RANK_LEAF,
+	WITNESS_RANK_COUNTER_ACCUM = WITNESS_RANK_LEAF,
+	WITNESS_RANK_DSS = WITNESS_RANK_LEAF,
+	WITNESS_RANK_PROF_ACTIVE = WITNESS_RANK_LEAF,
+	WITNESS_RANK_PROF_DUMP_FILENAME = WITNESS_RANK_LEAF,
+	WITNESS_RANK_PROF_GDUMP = WITNESS_RANK_LEAF,
+	WITNESS_RANK_PROF_NEXT_THR_UID = WITNESS_RANK_LEAF,
+	WITNESS_RANK_PROF_RECENT_ALLOC = WITNESS_RANK_LEAF,
+	WITNESS_RANK_PROF_STATS = WITNESS_RANK_LEAF,
+	WITNESS_RANK_PROF_THREAD_ACTIVE_INIT = WITNESS_RANK_LEAF,
+};
+typedef enum witness_rank_e witness_rank_t;
+
+/******************************************************************************/
+/* PER-WITNESS DATA */
+/******************************************************************************/
+#if defined(JEMALLOC_DEBUG)
+#  define WITNESS_INITIALIZER(name, rank) {name, rank, NULL, NULL, {NULL, NULL}}
+#else
+#  define WITNESS_INITIALIZER(name, rank)
+#endif
+
+typedef struct witness_s witness_t;
+typedef ql_head(witness_t) witness_list_t;
+typedef int witness_comp_t (const witness_t *, void *, const witness_t *,
+    void *);
+
+struct witness_s {
+	/* Name, used for printing lock order reversal messages. */
+	const char		*name;
+
+	/*
+	 * Witness rank, where 0 is lowest and WITNESS_RANK_LEAF is highest.
+	 * Witnesses must be acquired in order of increasing rank.
+	 */
+	witness_rank_t		rank;
+
+	/*
+	 * If two witnesses are of equal rank and they have the samp comp
+	 * function pointer, it is called as a last attempt to differentiate
+	 * between witnesses of equal rank.
+	 */
+	witness_comp_t		*comp;
+
+	/* Opaque data, passed to comp(). */
+	void			*opaque;
+
+	/* Linkage for thread's currently owned locks. */
+	ql_elm(witness_t)	link;
+};
+
+/******************************************************************************/
+/* PER-THREAD DATA */
+/******************************************************************************/
+typedef struct witness_tsd_s witness_tsd_t;
+struct witness_tsd_s {
+	witness_list_t witnesses;
+	bool forking;
+};
+
+#define WITNESS_TSD_INITIALIZER { ql_head_initializer(witnesses), false }
+#define WITNESS_TSDN_NULL ((witness_tsdn_t *)0)
+
+/******************************************************************************/
+/* (PER-THREAD) NULLABILITY HELPERS */
+/******************************************************************************/
+typedef struct witness_tsdn_s witness_tsdn_t;
+struct witness_tsdn_s {
+	witness_tsd_t witness_tsd;
+};
+
+JEMALLOC_ALWAYS_INLINE witness_tsdn_t *
+witness_tsd_tsdn(witness_tsd_t *witness_tsd) {
+	return (witness_tsdn_t *)witness_tsd;
+}
+
+JEMALLOC_ALWAYS_INLINE bool
+witness_tsdn_null(witness_tsdn_t *witness_tsdn) {
+	return witness_tsdn == NULL;
+}
+
+JEMALLOC_ALWAYS_INLINE witness_tsd_t *
+witness_tsdn_tsd(witness_tsdn_t *witness_tsdn) {
+	assert(!witness_tsdn_null(witness_tsdn));
+	return &witness_tsdn->witness_tsd;
+}
+
+/******************************************************************************/
+/* API */
+/******************************************************************************/
+void witness_init(witness_t *witness, const char *name, witness_rank_t rank,
+    witness_comp_t *comp, void *opaque);
+
+typedef void (witness_lock_error_t)(const witness_list_t *, const witness_t *);
+extern witness_lock_error_t *JET_MUTABLE witness_lock_error;
+
+typedef void (witness_owner_error_t)(const witness_t *);
+extern witness_owner_error_t *JET_MUTABLE witness_owner_error;
+
+typedef void (witness_not_owner_error_t)(const witness_t *);
+extern witness_not_owner_error_t *JET_MUTABLE witness_not_owner_error;
+
+typedef void (witness_depth_error_t)(const witness_list_t *,
+    witness_rank_t rank_inclusive, unsigned depth);
+extern witness_depth_error_t *JET_MUTABLE witness_depth_error;
+
+void witnesses_cleanup(witness_tsd_t *witness_tsd);
+void witness_prefork(witness_tsd_t *witness_tsd);
+void witness_postfork_parent(witness_tsd_t *witness_tsd);
+void witness_postfork_child(witness_tsd_t *witness_tsd);
+
+/* Helper, not intended for direct use. */
+static inline bool
+witness_owner(witness_tsd_t *witness_tsd, const witness_t *witness) {
+	witness_list_t *witnesses;
+	witness_t *w;
+
+	cassert(config_debug);
+
+	witnesses = &witness_tsd->witnesses;
+	ql_foreach(w, witnesses, link) {
+		if (w == witness) {
+			return true;
+		}
+	}
+
+	return false;
+}
+
+static inline void
+witness_assert_owner(witness_tsdn_t *witness_tsdn, const witness_t *witness) {
+	witness_tsd_t *witness_tsd;
+
+	if (!config_debug) {
+		return;
+	}
+
+	if (witness_tsdn_null(witness_tsdn)) {
+		return;
+	}
+	witness_tsd = witness_tsdn_tsd(witness_tsdn);
+	if (witness->rank == WITNESS_RANK_OMIT) {
+		return;
+	}
+
+	if (witness_owner(witness_tsd, witness)) {
+		return;
+	}
+	witness_owner_error(witness);
+}
+
+static inline void
+witness_assert_not_owner(witness_tsdn_t *witness_tsdn,
+    const witness_t *witness) {
+	witness_tsd_t *witness_tsd;
+	witness_list_t *witnesses;
+	witness_t *w;
+
+	if (!config_debug) {
+		return;
+	}
+
+	if (witness_tsdn_null(witness_tsdn)) {
+		return;
+	}
+	witness_tsd = witness_tsdn_tsd(witness_tsdn);
+	if (witness->rank == WITNESS_RANK_OMIT) {
+		return;
+	}
+
+	witnesses = &witness_tsd->witnesses;
+	ql_foreach(w, witnesses, link) {
+		if (w == witness) {
+			witness_not_owner_error(witness);
+		}
+	}
+}
+
+/* Returns depth.  Not intended for direct use. */
+static inline unsigned
+witness_depth_to_rank(witness_list_t *witnesses, witness_rank_t rank_inclusive)
+{
+	unsigned d = 0;
+	witness_t *w = ql_last(witnesses, link);
+
+	if (w != NULL) {
+		ql_reverse_foreach(w, witnesses, link) {
+			if (w->rank < rank_inclusive) {
+				break;
+			}
+			d++;
+		}
+	}
+
+	return d;
+}
+
+static inline void
+witness_assert_depth_to_rank(witness_tsdn_t *witness_tsdn,
+    witness_rank_t rank_inclusive, unsigned depth) {
+	if (!config_debug || witness_tsdn_null(witness_tsdn)) {
+		return;
+	}
+
+	witness_list_t *witnesses = &witness_tsdn_tsd(witness_tsdn)->witnesses;
+	unsigned d = witness_depth_to_rank(witnesses, rank_inclusive);
+
+	if (d != depth) {
+		witness_depth_error(witnesses, rank_inclusive, depth);
+	}
+}
+
+static inline void
+witness_assert_depth(witness_tsdn_t *witness_tsdn, unsigned depth) {
+	witness_assert_depth_to_rank(witness_tsdn, WITNESS_RANK_MIN, depth);
+}
+
+static inline void
+witness_assert_lockless(witness_tsdn_t *witness_tsdn) {
+	witness_assert_depth(witness_tsdn, 0);
+}
+
+static inline void
+witness_assert_positive_depth_to_rank(witness_tsdn_t *witness_tsdn,
+    witness_rank_t rank_inclusive) {
+	if (!config_debug || witness_tsdn_null(witness_tsdn)) {
+		return;
+	}
+
+	witness_list_t *witnesses = &witness_tsdn_tsd(witness_tsdn)->witnesses;
+	unsigned d = witness_depth_to_rank(witnesses, rank_inclusive);
+
+	if (d == 0) {
+		witness_depth_error(witnesses, rank_inclusive, 1);
+	}
+}
+
+static inline void
+witness_lock(witness_tsdn_t *witness_tsdn, witness_t *witness) {
+	witness_tsd_t *witness_tsd;
+	witness_list_t *witnesses;
+	witness_t *w;
+
+	if (!config_debug) {
+		return;
+	}
+
+	if (witness_tsdn_null(witness_tsdn)) {
+		return;
+	}
+	witness_tsd = witness_tsdn_tsd(witness_tsdn);
+	if (witness->rank == WITNESS_RANK_OMIT) {
+		return;
+	}
+
+	witness_assert_not_owner(witness_tsdn, witness);
+
+	witnesses = &witness_tsd->witnesses;
+	w = ql_last(witnesses, link);
+	if (w == NULL) {
+		/* No other locks; do nothing. */
+	} else if (witness_tsd->forking && w->rank <= witness->rank) {
+		/* Forking, and relaxed ranking satisfied. */
+	} else if (w->rank > witness->rank) {
+		/* Not forking, rank order reversal. */
+		witness_lock_error(witnesses, witness);
+	} else if (w->rank == witness->rank && (w->comp == NULL || w->comp !=
+	    witness->comp || w->comp(w, w->opaque, witness, witness->opaque) >
+	    0)) {
+		/*
+		 * Missing/incompatible comparison function, or comparison
+		 * function indicates rank order reversal.
+		 */
+		witness_lock_error(witnesses, witness);
+	}
+
+	ql_elm_new(witness, link);
+	ql_tail_insert(witnesses, witness, link);
+}
+
+static inline void
+witness_unlock(witness_tsdn_t *witness_tsdn, witness_t *witness) {
+	witness_tsd_t *witness_tsd;
+	witness_list_t *witnesses;
+
+	if (!config_debug) {
+		return;
+	}
+
+	if (witness_tsdn_null(witness_tsdn)) {
+		return;
+	}
+	witness_tsd = witness_tsdn_tsd(witness_tsdn);
+	if (witness->rank == WITNESS_RANK_OMIT) {
+		return;
+	}
+
+	/*
+	 * Check whether owner before removal, rather than relying on
+	 * witness_assert_owner() to abort, so that unit tests can test this
+	 * function's failure mode without causing undefined behavior.
+	 */
+	if (witness_owner(witness_tsd, witness)) {
+		witnesses = &witness_tsd->witnesses;
+		ql_remove(witnesses, witness, link);
+	} else {
+		witness_assert_owner(witness_tsdn, witness);
+	}
+}
+
+#endif /* JEMALLOC_INTERNAL_WITNESS_H */
diff --git a/deps/jemalloc/include/jemalloc/jemalloc.sh b/deps/jemalloc/include/jemalloc/jemalloc.sh
new file mode 100755
index 0000000..b19b154
--- /dev/null
+++ b/deps/jemalloc/include/jemalloc/jemalloc.sh
@@ -0,0 +1,27 @@
+#!/bin/sh
+
+objroot=$1
+
+cat <<EOF
+#ifndef JEMALLOC_H_
+#define JEMALLOC_H_
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+EOF
+
+for hdr in jemalloc_defs.h jemalloc_rename.h jemalloc_macros.h \
+           jemalloc_protos.h jemalloc_typedefs.h jemalloc_mangle.h ; do
+  cat "${objroot}include/jemalloc/${hdr}" \
+      | grep -v 'Generated from .* by configure\.' \
+      | sed -e 's/ $//g'
+  echo
+done
+
+cat <<EOF
+#ifdef __cplusplus
+}
+#endif
+#endif /* JEMALLOC_H_ */
+EOF
diff --git a/deps/jemalloc/include/jemalloc/jemalloc_defs.h.in b/deps/jemalloc/include/jemalloc/jemalloc_defs.h.in
new file mode 100644
index 0000000..cbe2fca
--- /dev/null
+++ b/deps/jemalloc/include/jemalloc/jemalloc_defs.h.in
@@ -0,0 +1,54 @@
+/* Defined if __attribute__((...)) syntax is supported. */
+#undef JEMALLOC_HAVE_ATTR
+
+/* Defined if alloc_size attribute is supported. */
+#undef JEMALLOC_HAVE_ATTR_ALLOC_SIZE
+
+/* Defined if format_arg(...) attribute is supported. */
+#undef JEMALLOC_HAVE_ATTR_FORMAT_ARG
+
+/* Defined if format(gnu_printf, ...) attribute is supported. */
+#undef JEMALLOC_HAVE_ATTR_FORMAT_GNU_PRINTF
+
+/* Defined if format(printf, ...) attribute is supported. */
+#undef JEMALLOC_HAVE_ATTR_FORMAT_PRINTF
+
+/* Defined if fallthrough attribute is supported. */
+#undef JEMALLOC_HAVE_ATTR_FALLTHROUGH
+
+/* Defined if cold attribute is supported. */
+#undef JEMALLOC_HAVE_ATTR_COLD
+
+/*
+ * Define overrides for non-standard allocator-related functions if they are
+ * present on the system.
+ */
+#undef JEMALLOC_OVERRIDE_MEMALIGN
+#undef JEMALLOC_OVERRIDE_VALLOC
+
+/*
+ * At least Linux omits the "const" in:
+ *
+ *   size_t malloc_usable_size(const void *ptr);
+ *
+ * Match the operating system's prototype.
+ */
+#undef JEMALLOC_USABLE_SIZE_CONST
+
+/*
+ * If defined, specify throw() for the public function prototypes when compiling
+ * with C++.  The only justification for this is to match the prototypes that
+ * glibc defines.
+ */
+#undef JEMALLOC_USE_CXX_THROW
+
+#ifdef _MSC_VER
+#  ifdef _WIN64
+#    define LG_SIZEOF_PTR_WIN 3
+#  else
+#    define LG_SIZEOF_PTR_WIN 2
+#  endif
+#endif
+
+/* sizeof(void *) == 2^LG_SIZEOF_PTR. */
+#undef LG_SIZEOF_PTR
diff --git a/deps/jemalloc/include/jemalloc/jemalloc_macros.h.in b/deps/jemalloc/include/jemalloc/jemalloc_macros.h.in
new file mode 100644
index 0000000..d04af34
--- /dev/null
+++ b/deps/jemalloc/include/jemalloc/jemalloc_macros.h.in
@@ -0,0 +1,153 @@
+#include <stdlib.h>
+#include <stdbool.h>
+#include <stdint.h>
+#include <limits.h>
+#include <strings.h>
+
+#define JEMALLOC_VERSION "@jemalloc_version@"
+#define JEMALLOC_VERSION_MAJOR @jemalloc_version_major@
+#define JEMALLOC_VERSION_MINOR @jemalloc_version_minor@
+#define JEMALLOC_VERSION_BUGFIX @jemalloc_version_bugfix@
+#define JEMALLOC_VERSION_NREV @jemalloc_version_nrev@
+#define JEMALLOC_VERSION_GID "@jemalloc_version_gid@"
+#define JEMALLOC_VERSION_GID_IDENT @jemalloc_version_gid@
+
+#define MALLOCX_LG_ALIGN(la)	((int)(la))
+#if LG_SIZEOF_PTR == 2
+#  define MALLOCX_ALIGN(a)	((int)(ffs((int)(a))-1))
+#else
+#  define MALLOCX_ALIGN(a)						\
+     ((int)(((size_t)(a) < (size_t)INT_MAX) ? ffs((int)(a))-1 :	\
+     ffs((int)(((size_t)(a))>>32))+31))
+#endif
+#define MALLOCX_ZERO	((int)0x40)
+/*
+ * Bias tcache index bits so that 0 encodes "automatic tcache management", and 1
+ * encodes MALLOCX_TCACHE_NONE.
+ */
+#define MALLOCX_TCACHE(tc)	((int)(((tc)+2) << 8))
+#define MALLOCX_TCACHE_NONE	MALLOCX_TCACHE(-1)
+/*
+ * Bias arena index bits so that 0 encodes "use an automatically chosen arena".
+ */
+#define MALLOCX_ARENA(a)	((((int)(a))+1) << 20)
+
+/*
+ * Use as arena index in "arena.<i>.{purge,decay,dss}" and
+ * "stats.arenas.<i>.*" mallctl interfaces to select all arenas.  This
+ * definition is intentionally specified in raw decimal format to support
+ * cpp-based string concatenation, e.g.
+ *
+ *   #define STRINGIFY_HELPER(x) #x
+ *   #define STRINGIFY(x) STRINGIFY_HELPER(x)
+ *
+ *   mallctl("arena." STRINGIFY(MALLCTL_ARENAS_ALL) ".purge", NULL, NULL, NULL,
+ *       0);
+ */
+#define MALLCTL_ARENAS_ALL	4096
+/*
+ * Use as arena index in "stats.arenas.<i>.*" mallctl interfaces to select
+ * destroyed arenas.
+ */
+#define MALLCTL_ARENAS_DESTROYED	4097
+
+#if defined(__cplusplus) && defined(JEMALLOC_USE_CXX_THROW)
+#  define JEMALLOC_CXX_THROW throw()
+#else
+#  define JEMALLOC_CXX_THROW
+#endif
+
+#if defined(_MSC_VER)
+#  define JEMALLOC_ATTR(s)
+#  define JEMALLOC_ALIGNED(s) __declspec(align(s))
+#  define JEMALLOC_ALLOC_SIZE(s)
+#  define JEMALLOC_ALLOC_SIZE2(s1, s2)
+#  ifndef JEMALLOC_EXPORT
+#    ifdef DLLEXPORT
+#      define JEMALLOC_EXPORT __declspec(dllexport)
+#    else
+#      define JEMALLOC_EXPORT __declspec(dllimport)
+#    endif
+#  endif
+#  define JEMALLOC_FORMAT_ARG(i)
+#  define JEMALLOC_FORMAT_PRINTF(s, i)
+#  define JEMALLOC_FALLTHROUGH
+#  define JEMALLOC_NOINLINE __declspec(noinline)
+#  ifdef __cplusplus
+#    define JEMALLOC_NOTHROW __declspec(nothrow)
+#  else
+#    define JEMALLOC_NOTHROW
+#  endif
+#  define JEMALLOC_SECTION(s) __declspec(allocate(s))
+#  define JEMALLOC_RESTRICT_RETURN __declspec(restrict)
+#  if _MSC_VER >= 1900 && !defined(__EDG__)
+#    define JEMALLOC_ALLOCATOR __declspec(allocator)
+#  else
+#    define JEMALLOC_ALLOCATOR
+#  endif
+#  define JEMALLOC_COLD
+#elif defined(JEMALLOC_HAVE_ATTR)
+#  define JEMALLOC_ATTR(s) __attribute__((s))
+#  define JEMALLOC_ALIGNED(s) JEMALLOC_ATTR(aligned(s))
+#  ifdef JEMALLOC_HAVE_ATTR_ALLOC_SIZE
+#    define JEMALLOC_ALLOC_SIZE(s) JEMALLOC_ATTR(alloc_size(s))
+#    define JEMALLOC_ALLOC_SIZE2(s1, s2) JEMALLOC_ATTR(alloc_size(s1, s2))
+#  else
+#    define JEMALLOC_ALLOC_SIZE(s)
+#    define JEMALLOC_ALLOC_SIZE2(s1, s2)
+#  endif
+#  ifndef JEMALLOC_EXPORT
+#    define JEMALLOC_EXPORT JEMALLOC_ATTR(visibility("default"))
+#  endif
+#  ifdef JEMALLOC_HAVE_ATTR_FORMAT_ARG
+#    define JEMALLOC_FORMAT_ARG(i) JEMALLOC_ATTR(__format_arg__(3))
+#  else
+#    define JEMALLOC_FORMAT_ARG(i)
+#  endif
+#  ifdef JEMALLOC_HAVE_ATTR_FORMAT_GNU_PRINTF
+#    define JEMALLOC_FORMAT_PRINTF(s, i) JEMALLOC_ATTR(format(gnu_printf, s, i))
+#  elif defined(JEMALLOC_HAVE_ATTR_FORMAT_PRINTF)
+#    define JEMALLOC_FORMAT_PRINTF(s, i) JEMALLOC_ATTR(format(printf, s, i))
+#  else
+#    define JEMALLOC_FORMAT_PRINTF(s, i)
+#  endif
+#  ifdef JEMALLOC_HAVE_ATTR_FALLTHROUGH
+#    define JEMALLOC_FALLTHROUGH JEMALLOC_ATTR(fallthrough)
+#  else
+#    define JEMALLOC_FALLTHROUGH
+#  endif
+#  define JEMALLOC_NOINLINE JEMALLOC_ATTR(noinline)
+#  define JEMALLOC_NOTHROW JEMALLOC_ATTR(nothrow)
+#  define JEMALLOC_SECTION(s) JEMALLOC_ATTR(section(s))
+#  define JEMALLOC_RESTRICT_RETURN
+#  define JEMALLOC_ALLOCATOR
+#  ifdef JEMALLOC_HAVE_ATTR_COLD
+#    define JEMALLOC_COLD JEMALLOC_ATTR(__cold__)
+#  else
+#    define JEMALLOC_COLD
+#  endif
+#else
+#  define JEMALLOC_ATTR(s)
+#  define JEMALLOC_ALIGNED(s)
+#  define JEMALLOC_ALLOC_SIZE(s)
+#  define JEMALLOC_ALLOC_SIZE2(s1, s2)
+#  define JEMALLOC_EXPORT
+#  define JEMALLOC_FORMAT_PRINTF(s, i)
+#  define JEMALLOC_FALLTHROUGH
+#  define JEMALLOC_NOINLINE
+#  define JEMALLOC_NOTHROW
+#  define JEMALLOC_SECTION(s)
+#  define JEMALLOC_RESTRICT_RETURN
+#  define JEMALLOC_ALLOCATOR
+#  define JEMALLOC_COLD
+#endif
+
+#if (defined(__APPLE__) || defined(__FreeBSD__)) && !defined(JEMALLOC_NO_RENAME)
+#  define JEMALLOC_SYS_NOTHROW
+#else
+#  define JEMALLOC_SYS_NOTHROW JEMALLOC_NOTHROW
+#endif
+
+/* This version of Jemalloc, modified for Redis, has the je_get_defrag_hint()
+ * function. */
+#define JEMALLOC_FRAG_HINT
diff --git a/deps/jemalloc/include/jemalloc/jemalloc_mangle.sh b/deps/jemalloc/include/jemalloc/jemalloc_mangle.sh
new file mode 100755
index 0000000..c675bb4
--- /dev/null
+++ b/deps/jemalloc/include/jemalloc/jemalloc_mangle.sh
@@ -0,0 +1,45 @@
+#!/bin/sh -eu
+
+public_symbols_txt=$1
+symbol_prefix=$2
+
+cat <<EOF
+/*
+ * By default application code must explicitly refer to mangled symbol names,
+ * so that it is possible to use jemalloc in conjunction with another allocator
+ * in the same application.  Define JEMALLOC_MANGLE in order to cause automatic
+ * name mangling that matches the API prefixing that happened as a result of
+ * --with-mangling and/or --with-jemalloc-prefix configuration settings.
+ */
+#ifdef JEMALLOC_MANGLE
+#  ifndef JEMALLOC_NO_DEMANGLE
+#    define JEMALLOC_NO_DEMANGLE
+#  endif
+EOF
+
+for nm in `cat ${public_symbols_txt}` ; do
+  n=`echo ${nm} |tr ':' ' ' |awk '{print $1}'`
+  echo "#  define ${n} ${symbol_prefix}${n}"
+done
+
+cat <<EOF
+#endif
+
+/*
+ * The ${symbol_prefix}* macros can be used as stable alternative names for the
+ * public jemalloc API if JEMALLOC_NO_DEMANGLE is defined.  This is primarily
+ * meant for use in jemalloc itself, but it can be used by application code to
+ * provide isolation from the name mangling specified via --with-mangling
+ * and/or --with-jemalloc-prefix.
+ */
+#ifndef JEMALLOC_NO_DEMANGLE
+EOF
+
+for nm in `cat ${public_symbols_txt}` ; do
+  n=`echo ${nm} |tr ':' ' ' |awk '{print $1}'`
+  echo "#  undef ${symbol_prefix}${n}"
+done
+
+cat <<EOF
+#endif
+EOF
diff --git a/deps/jemalloc/include/jemalloc/jemalloc_protos.h.in b/deps/jemalloc/include/jemalloc/jemalloc_protos.h.in
new file mode 100644
index 0000000..356221c
--- /dev/null
+++ b/deps/jemalloc/include/jemalloc/jemalloc_protos.h.in
@@ -0,0 +1,71 @@
+/*
+ * The @je_@ prefix on the following public symbol declarations is an artifact
+ * of namespace management, and should be omitted in application code unless
+ * JEMALLOC_NO_DEMANGLE is defined (see jemalloc_mangle@install_suffix@.h).
+ */
+extern JEMALLOC_EXPORT const char	*@je_@malloc_conf;
+extern JEMALLOC_EXPORT void		(*@je_@malloc_message)(void *cbopaque,
+    const char *s);
+
+JEMALLOC_EXPORT JEMALLOC_ALLOCATOR JEMALLOC_RESTRICT_RETURN
+    void JEMALLOC_SYS_NOTHROW	*@je_@malloc(size_t size)
+    JEMALLOC_CXX_THROW JEMALLOC_ATTR(malloc) JEMALLOC_ALLOC_SIZE(1);
+JEMALLOC_EXPORT JEMALLOC_ALLOCATOR JEMALLOC_RESTRICT_RETURN
+    void JEMALLOC_SYS_NOTHROW	*@je_@calloc(size_t num, size_t size)
+    JEMALLOC_CXX_THROW JEMALLOC_ATTR(malloc) JEMALLOC_ALLOC_SIZE2(1, 2);
+JEMALLOC_EXPORT int JEMALLOC_SYS_NOTHROW @je_@posix_memalign(
+    void **memptr, size_t alignment, size_t size) JEMALLOC_CXX_THROW
+    JEMALLOC_ATTR(nonnull(1));
+JEMALLOC_EXPORT JEMALLOC_ALLOCATOR JEMALLOC_RESTRICT_RETURN
+    void JEMALLOC_SYS_NOTHROW	*@je_@aligned_alloc(size_t alignment,
+    size_t size) JEMALLOC_CXX_THROW JEMALLOC_ATTR(malloc)
+    JEMALLOC_ALLOC_SIZE(2);
+JEMALLOC_EXPORT JEMALLOC_ALLOCATOR JEMALLOC_RESTRICT_RETURN
+    void JEMALLOC_SYS_NOTHROW	*@je_@realloc(void *ptr, size_t size)
+    JEMALLOC_CXX_THROW JEMALLOC_ALLOC_SIZE(2);
+JEMALLOC_EXPORT void JEMALLOC_SYS_NOTHROW	@je_@free(void *ptr)
+    JEMALLOC_CXX_THROW;
+
+JEMALLOC_EXPORT JEMALLOC_ALLOCATOR JEMALLOC_RESTRICT_RETURN
+    void JEMALLOC_NOTHROW	*@je_@mallocx(size_t size, int flags)
+    JEMALLOC_ATTR(malloc) JEMALLOC_ALLOC_SIZE(1);
+JEMALLOC_EXPORT JEMALLOC_ALLOCATOR JEMALLOC_RESTRICT_RETURN
+    void JEMALLOC_NOTHROW	*@je_@rallocx(void *ptr, size_t size,
+    int flags) JEMALLOC_ALLOC_SIZE(2);
+JEMALLOC_EXPORT size_t JEMALLOC_NOTHROW	@je_@xallocx(void *ptr, size_t size,
+    size_t extra, int flags);
+JEMALLOC_EXPORT size_t JEMALLOC_NOTHROW	@je_@sallocx(const void *ptr,
+    int flags) JEMALLOC_ATTR(pure);
+JEMALLOC_EXPORT void JEMALLOC_NOTHROW	@je_@dallocx(void *ptr, int flags);
+JEMALLOC_EXPORT void JEMALLOC_NOTHROW	@je_@sdallocx(void *ptr, size_t size,
+    int flags);
+JEMALLOC_EXPORT size_t JEMALLOC_NOTHROW	@je_@nallocx(size_t size, int flags)
+    JEMALLOC_ATTR(pure);
+
+JEMALLOC_EXPORT int JEMALLOC_NOTHROW	@je_@mallctl(const char *name,
+    void *oldp, size_t *oldlenp, void *newp, size_t newlen);
+JEMALLOC_EXPORT int JEMALLOC_NOTHROW	@je_@mallctlnametomib(const char *name,
+    size_t *mibp, size_t *miblenp);
+JEMALLOC_EXPORT int JEMALLOC_NOTHROW	@je_@mallctlbymib(const size_t *mib,
+    size_t miblen, void *oldp, size_t *oldlenp, void *newp, size_t newlen);
+JEMALLOC_EXPORT void JEMALLOC_NOTHROW	@je_@malloc_stats_print(
+    void (*write_cb)(void *, const char *), void *@je_@cbopaque,
+    const char *opts);
+JEMALLOC_EXPORT size_t JEMALLOC_NOTHROW	@je_@malloc_usable_size(
+    JEMALLOC_USABLE_SIZE_CONST void *ptr) JEMALLOC_CXX_THROW;
+#ifdef JEMALLOC_HAVE_MALLOC_SIZE
+JEMALLOC_EXPORT size_t JEMALLOC_NOTHROW	@je_@malloc_size(
+    const void *ptr);
+#endif
+
+#ifdef JEMALLOC_OVERRIDE_MEMALIGN
+JEMALLOC_EXPORT JEMALLOC_ALLOCATOR JEMALLOC_RESTRICT_RETURN
+    void JEMALLOC_SYS_NOTHROW	*@je_@memalign(size_t alignment, size_t size)
+    JEMALLOC_CXX_THROW JEMALLOC_ATTR(malloc);
+#endif
+
+#ifdef JEMALLOC_OVERRIDE_VALLOC
+JEMALLOC_EXPORT JEMALLOC_ALLOCATOR JEMALLOC_RESTRICT_RETURN
+    void JEMALLOC_SYS_NOTHROW	*@je_@valloc(size_t size) JEMALLOC_CXX_THROW
+    JEMALLOC_ATTR(malloc);
+#endif
diff --git a/deps/jemalloc/include/jemalloc/jemalloc_rename.sh b/deps/jemalloc/include/jemalloc/jemalloc_rename.sh
new file mode 100755
index 0000000..f943891
--- /dev/null
+++ b/deps/jemalloc/include/jemalloc/jemalloc_rename.sh
@@ -0,0 +1,22 @@
+#!/bin/sh
+
+public_symbols_txt=$1
+
+cat <<EOF
+/*
+ * Name mangling for public symbols is controlled by --with-mangling and
+ * --with-jemalloc-prefix.  With default settings the je_ prefix is stripped by
+ * these macro definitions.
+ */
+#ifndef JEMALLOC_NO_RENAME
+EOF
+
+for nm in `cat ${public_symbols_txt}` ; do
+  n=`echo ${nm} |tr ':' ' ' |awk '{print $1}'`
+  m=`echo ${nm} |tr ':' ' ' |awk '{print $2}'`
+  echo "#  define je_${n} ${m}"
+done
+
+cat <<EOF
+#endif
+EOF
diff --git a/deps/jemalloc/include/jemalloc/jemalloc_typedefs.h.in b/deps/jemalloc/include/jemalloc/jemalloc_typedefs.h.in
new file mode 100644
index 0000000..1a58874
--- /dev/null
+++ b/deps/jemalloc/include/jemalloc/jemalloc_typedefs.h.in
@@ -0,0 +1,77 @@
+typedef struct extent_hooks_s extent_hooks_t;
+
+/*
+ * void *
+ * extent_alloc(extent_hooks_t *extent_hooks, void *new_addr, size_t size,
+ *     size_t alignment, bool *zero, bool *commit, unsigned arena_ind);
+ */
+typedef void *(extent_alloc_t)(extent_hooks_t *, void *, size_t, size_t, bool *,
+    bool *, unsigned);
+
+/*
+ * bool
+ * extent_dalloc(extent_hooks_t *extent_hooks, void *addr, size_t size,
+ *     bool committed, unsigned arena_ind);
+ */
+typedef bool (extent_dalloc_t)(extent_hooks_t *, void *, size_t, bool,
+    unsigned);
+
+/*
+ * void
+ * extent_destroy(extent_hooks_t *extent_hooks, void *addr, size_t size,
+ *     bool committed, unsigned arena_ind);
+ */
+typedef void (extent_destroy_t)(extent_hooks_t *, void *, size_t, bool,
+    unsigned);
+
+/*
+ * bool
+ * extent_commit(extent_hooks_t *extent_hooks, void *addr, size_t size,
+ *     size_t offset, size_t length, unsigned arena_ind);
+ */
+typedef bool (extent_commit_t)(extent_hooks_t *, void *, size_t, size_t, size_t,
+    unsigned);
+
+/*
+ * bool
+ * extent_decommit(extent_hooks_t *extent_hooks, void *addr, size_t size,
+ *     size_t offset, size_t length, unsigned arena_ind);
+ */
+typedef bool (extent_decommit_t)(extent_hooks_t *, void *, size_t, size_t,
+    size_t, unsigned);
+
+/*
+ * bool
+ * extent_purge(extent_hooks_t *extent_hooks, void *addr, size_t size,
+ *     size_t offset, size_t length, unsigned arena_ind);
+ */
+typedef bool (extent_purge_t)(extent_hooks_t *, void *, size_t, size_t, size_t,
+    unsigned);
+
+/*
+ * bool
+ * extent_split(extent_hooks_t *extent_hooks, void *addr, size_t size,
+ *     size_t size_a, size_t size_b, bool committed, unsigned arena_ind);
+ */
+typedef bool (extent_split_t)(extent_hooks_t *, void *, size_t, size_t, size_t,
+    bool, unsigned);
+
+/*
+ * bool
+ * extent_merge(extent_hooks_t *extent_hooks, void *addr_a, size_t size_a,
+ *     void *addr_b, size_t size_b, bool committed, unsigned arena_ind);
+ */
+typedef bool (extent_merge_t)(extent_hooks_t *, void *, size_t, void *, size_t,
+    bool, unsigned);
+
+struct extent_hooks_s {
+	extent_alloc_t		*alloc;
+	extent_dalloc_t		*dalloc;
+	extent_destroy_t	*destroy;
+	extent_commit_t		*commit;
+	extent_decommit_t	*decommit;
+	extent_purge_t		*purge_lazy;
+	extent_purge_t		*purge_forced;
+	extent_split_t		*split;
+	extent_merge_t		*merge;
+};
diff --git a/deps/jemalloc/include/msvc_compat/C99/stdbool.h b/deps/jemalloc/include/msvc_compat/C99/stdbool.h
new file mode 100644
index 0000000..d92160e
--- /dev/null
+++ b/deps/jemalloc/include/msvc_compat/C99/stdbool.h
@@ -0,0 +1,20 @@
+#ifndef stdbool_h
+#define stdbool_h
+
+#include <wtypes.h>
+
+/* MSVC doesn't define _Bool or bool in C, but does have BOOL */
+/* Note this doesn't pass autoconf's test because (bool) 0.5 != true */
+/* Clang-cl uses MSVC headers, so needs msvc_compat, but has _Bool as
+ * a built-in type. */
+#ifndef __clang__
+typedef BOOL _Bool;
+#endif
+
+#define bool _Bool
+#define true 1
+#define false 0
+
+#define __bool_true_false_are_defined 1
+
+#endif /* stdbool_h */
diff --git a/deps/jemalloc/include/msvc_compat/C99/stdint.h b/deps/jemalloc/include/msvc_compat/C99/stdint.h
new file mode 100644
index 0000000..d02608a
--- /dev/null
+++ b/deps/jemalloc/include/msvc_compat/C99/stdint.h
@@ -0,0 +1,247 @@
+// ISO C9x  compliant stdint.h for Microsoft Visual Studio
+// Based on ISO/IEC 9899:TC2 Committee draft (May 6, 2005) WG14/N1124 
+// 
+//  Copyright (c) 2006-2008 Alexander Chemeris
+// 
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are met:
+// 
+//   1. Redistributions of source code must retain the above copyright notice,
+//      this list of conditions and the following disclaimer.
+// 
+//   2. Redistributions in binary form must reproduce the above copyright
+//      notice, this list of conditions and the following disclaimer in the
+//      documentation and/or other materials provided with the distribution.
+// 
+//   3. The name of the author may be used to endorse or promote products
+//      derived from this software without specific prior written permission.
+// 
+// THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
+// WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+// MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
+// EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
+// OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 
+// WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+// OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+// ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+// 
+///////////////////////////////////////////////////////////////////////////////
+
+#ifndef _MSC_VER // [
+#error "Use this header only with Microsoft Visual C++ compilers!"
+#endif // _MSC_VER ]
+
+#ifndef _MSC_STDINT_H_ // [
+#define _MSC_STDINT_H_
+
+#if _MSC_VER > 1000
+#pragma once
+#endif
+
+#include <limits.h>
+
+// For Visual Studio 6 in C++ mode and for many Visual Studio versions when
+// compiling for ARM we should wrap <wchar.h> include with 'extern "C++" {}'
+// or compiler give many errors like this:
+//   error C2733: second C linkage of overloaded function 'wmemchr' not allowed
+#ifdef __cplusplus
+extern "C" {
+#endif
+#  include <wchar.h>
+#ifdef __cplusplus
+}
+#endif
+
+// Define _W64 macros to mark types changing their size, like intptr_t.
+#ifndef _W64
+#  if !defined(__midl) && (defined(_X86_) || defined(_M_IX86)) && _MSC_VER >= 1300
+#     define _W64 __w64
+#  else
+#     define _W64
+#  endif
+#endif
+
+
+// 7.18.1 Integer types
+
+// 7.18.1.1 Exact-width integer types
+
+// Visual Studio 6 and Embedded Visual C++ 4 doesn't
+// realize that, e.g. char has the same size as __int8
+// so we give up on __intX for them.
+#if (_MSC_VER < 1300)
+   typedef signed char       int8_t;
+   typedef signed short      int16_t;
+   typedef signed int        int32_t;
+   typedef unsigned char     uint8_t;
+   typedef unsigned short    uint16_t;
+   typedef unsigned int      uint32_t;
+#else
+   typedef signed __int8     int8_t;
+   typedef signed __int16    int16_t;
+   typedef signed __int32    int32_t;
+   typedef unsigned __int8   uint8_t;
+   typedef unsigned __int16  uint16_t;
+   typedef unsigned __int32  uint32_t;
+#endif
+typedef signed __int64       int64_t;
+typedef unsigned __int64     uint64_t;
+
+
+// 7.18.1.2 Minimum-width integer types
+typedef int8_t    int_least8_t;
+typedef int16_t   int_least16_t;
+typedef int32_t   int_least32_t;
+typedef int64_t   int_least64_t;
+typedef uint8_t   uint_least8_t;
+typedef uint16_t  uint_least16_t;
+typedef uint32_t  uint_least32_t;
+typedef uint64_t  uint_least64_t;
+
+// 7.18.1.3 Fastest minimum-width integer types
+typedef int8_t    int_fast8_t;
+typedef int16_t   int_fast16_t;
+typedef int32_t   int_fast32_t;
+typedef int64_t   int_fast64_t;
+typedef uint8_t   uint_fast8_t;
+typedef uint16_t  uint_fast16_t;
+typedef uint32_t  uint_fast32_t;
+typedef uint64_t  uint_fast64_t;
+
+// 7.18.1.4 Integer types capable of holding object pointers
+#ifdef _WIN64 // [
+   typedef signed __int64    intptr_t;
+   typedef unsigned __int64  uintptr_t;
+#else // _WIN64 ][
+   typedef _W64 signed int   intptr_t;
+   typedef _W64 unsigned int uintptr_t;
+#endif // _WIN64 ]
+
+// 7.18.1.5 Greatest-width integer types
+typedef int64_t   intmax_t;
+typedef uint64_t  uintmax_t;
+
+
+// 7.18.2 Limits of specified-width integer types
+
+#if !defined(__cplusplus) || defined(__STDC_LIMIT_MACROS) // [   See footnote 220 at page 257 and footnote 221 at page 259
+
+// 7.18.2.1 Limits of exact-width integer types
+#define INT8_MIN     ((int8_t)_I8_MIN)
+#define INT8_MAX     _I8_MAX
+#define INT16_MIN    ((int16_t)_I16_MIN)
+#define INT16_MAX    _I16_MAX
+#define INT32_MIN    ((int32_t)_I32_MIN)
+#define INT32_MAX    _I32_MAX
+#define INT64_MIN    ((int64_t)_I64_MIN)
+#define INT64_MAX    _I64_MAX
+#define UINT8_MAX    _UI8_MAX
+#define UINT16_MAX   _UI16_MAX
+#define UINT32_MAX   _UI32_MAX
+#define UINT64_MAX   _UI64_MAX
+
+// 7.18.2.2 Limits of minimum-width integer types
+#define INT_LEAST8_MIN    INT8_MIN
+#define INT_LEAST8_MAX    INT8_MAX
+#define INT_LEAST16_MIN   INT16_MIN
+#define INT_LEAST16_MAX   INT16_MAX
+#define INT_LEAST32_MIN   INT32_MIN
+#define INT_LEAST32_MAX   INT32_MAX
+#define INT_LEAST64_MIN   INT64_MIN
+#define INT_LEAST64_MAX   INT64_MAX
+#define UINT_LEAST8_MAX   UINT8_MAX
+#define UINT_LEAST16_MAX  UINT16_MAX
+#define UINT_LEAST32_MAX  UINT32_MAX
+#define UINT_LEAST64_MAX  UINT64_MAX
+
+// 7.18.2.3 Limits of fastest minimum-width integer types
+#define INT_FAST8_MIN    INT8_MIN
+#define INT_FAST8_MAX    INT8_MAX
+#define INT_FAST16_MIN   INT16_MIN
+#define INT_FAST16_MAX   INT16_MAX
+#define INT_FAST32_MIN   INT32_MIN
+#define INT_FAST32_MAX   INT32_MAX
+#define INT_FAST64_MIN   INT64_MIN
+#define INT_FAST64_MAX   INT64_MAX
+#define UINT_FAST8_MAX   UINT8_MAX
+#define UINT_FAST16_MAX  UINT16_MAX
+#define UINT_FAST32_MAX  UINT32_MAX
+#define UINT_FAST64_MAX  UINT64_MAX
+
+// 7.18.2.4 Limits of integer types capable of holding object pointers
+#ifdef _WIN64 // [
+#  define INTPTR_MIN   INT64_MIN
+#  define INTPTR_MAX   INT64_MAX
+#  define UINTPTR_MAX  UINT64_MAX
+#else // _WIN64 ][
+#  define INTPTR_MIN   INT32_MIN
+#  define INTPTR_MAX   INT32_MAX
+#  define UINTPTR_MAX  UINT32_MAX
+#endif // _WIN64 ]
+
+// 7.18.2.5 Limits of greatest-width integer types
+#define INTMAX_MIN   INT64_MIN
+#define INTMAX_MAX   INT64_MAX
+#define UINTMAX_MAX  UINT64_MAX
+
+// 7.18.3 Limits of other integer types
+
+#ifdef _WIN64 // [
+#  define PTRDIFF_MIN  _I64_MIN
+#  define PTRDIFF_MAX  _I64_MAX
+#else  // _WIN64 ][
+#  define PTRDIFF_MIN  _I32_MIN
+#  define PTRDIFF_MAX  _I32_MAX
+#endif  // _WIN64 ]
+
+#define SIG_ATOMIC_MIN  INT_MIN
+#define SIG_ATOMIC_MAX  INT_MAX
+
+#ifndef SIZE_MAX // [
+#  ifdef _WIN64 // [
+#     define SIZE_MAX  _UI64_MAX
+#  else // _WIN64 ][
+#     define SIZE_MAX  _UI32_MAX
+#  endif // _WIN64 ]
+#endif // SIZE_MAX ]
+
+// WCHAR_MIN and WCHAR_MAX are also defined in <wchar.h>
+#ifndef WCHAR_MIN // [
+#  define WCHAR_MIN  0
+#endif  // WCHAR_MIN ]
+#ifndef WCHAR_MAX // [
+#  define WCHAR_MAX  _UI16_MAX
+#endif  // WCHAR_MAX ]
+
+#define WINT_MIN  0
+#define WINT_MAX  _UI16_MAX
+
+#endif // __STDC_LIMIT_MACROS ]
+
+
+// 7.18.4 Limits of other integer types
+
+#if !defined(__cplusplus) || defined(__STDC_CONSTANT_MACROS) // [   See footnote 224 at page 260
+
+// 7.18.4.1 Macros for minimum-width integer constants
+
+#define INT8_C(val)  val##i8
+#define INT16_C(val) val##i16
+#define INT32_C(val) val##i32
+#define INT64_C(val) val##i64
+
+#define UINT8_C(val)  val##ui8
+#define UINT16_C(val) val##ui16
+#define UINT32_C(val) val##ui32
+#define UINT64_C(val) val##ui64
+
+// 7.18.4.2 Macros for greatest-width integer constants
+#define INTMAX_C   INT64_C
+#define UINTMAX_C  UINT64_C
+
+#endif // __STDC_CONSTANT_MACROS ]
+
+
+#endif // _MSC_STDINT_H_ ]
diff --git a/deps/jemalloc/include/msvc_compat/strings.h b/deps/jemalloc/include/msvc_compat/strings.h
new file mode 100644
index 0000000..996f256
--- /dev/null
+++ b/deps/jemalloc/include/msvc_compat/strings.h
@@ -0,0 +1,58 @@
+#ifndef strings_h
+#define strings_h
+
+/* MSVC doesn't define ffs/ffsl. This dummy strings.h header is provided
+ * for both */
+#ifdef _MSC_VER
+#  include <intrin.h>
+#  pragma intrinsic(_BitScanForward)
+static __forceinline int ffsl(long x) {
+	unsigned long i;
+
+	if (_BitScanForward(&i, x)) {
+		return i + 1;
+	}
+	return 0;
+}
+
+static __forceinline int ffs(int x) {
+	return ffsl(x);
+}
+
+#  ifdef  _M_X64
+#    pragma intrinsic(_BitScanForward64)
+#  endif
+
+static __forceinline int ffsll(unsigned __int64 x) {
+	unsigned long i;
+#ifdef  _M_X64
+	if (_BitScanForward64(&i, x)) {
+		return i + 1;
+	}
+	return 0;
+#else
+// Fallback for 32-bit build where 64-bit version not available
+// assuming little endian
+	union {
+		unsigned __int64 ll;
+		unsigned   long l[2];
+	} s;
+
+	s.ll = x;
+
+	if (_BitScanForward(&i, s.l[0])) {
+		return i + 1;
+	} else if(_BitScanForward(&i, s.l[1])) {
+		return i + 33;
+	}
+	return 0;
+#endif
+}
+
+#else
+#  define ffsll(x) __builtin_ffsll(x)
+#  define ffsl(x) __builtin_ffsl(x)
+#  define ffs(x) __builtin_ffs(x)
+#endif
+
+#endif /* strings_h */
diff --git a/deps/jemalloc/include/msvc_compat/windows_extra.h b/deps/jemalloc/include/msvc_compat/windows_extra.h
new file mode 100644
index 0000000..a6ebb93
--- /dev/null
+++ b/deps/jemalloc/include/msvc_compat/windows_extra.h
@@ -0,0 +1,6 @@
+#ifndef MSVC_COMPAT_WINDOWS_EXTRA_H
+#define MSVC_COMPAT_WINDOWS_EXTRA_H
+
+#include <errno.h>
+
+#endif /* MSVC_COMPAT_WINDOWS_EXTRA_H */
diff --git a/deps/jemalloc/jemalloc.pc.in b/deps/jemalloc/jemalloc.pc.in
new file mode 100644
index 0000000..c428a86
--- /dev/null
+++ b/deps/jemalloc/jemalloc.pc.in
@@ -0,0 +1,12 @@
+prefix=@prefix@
+exec_prefix=@exec_prefix@
+libdir=@libdir@
+includedir=@includedir@
+install_suffix=@install_suffix@
+
+Name: jemalloc
+Description: A general purpose malloc(3) implementation that emphasizes fragmentation avoidance and scalable concurrency support.
+URL: http://jemalloc.net/
+Version: @jemalloc_version_major@.@jemalloc_version_minor@.@jemalloc_version_bugfix@_@jemalloc_version_nrev@
+Cflags: -I${includedir}
+Libs: -L${libdir} -ljemalloc${install_suffix}
diff --git a/deps/jemalloc/m4/ax_cxx_compile_stdcxx.m4 b/deps/jemalloc/m4/ax_cxx_compile_stdcxx.m4
new file mode 100644
index 0000000..43087b2
--- /dev/null
+++ b/deps/jemalloc/m4/ax_cxx_compile_stdcxx.m4
@@ -0,0 +1,951 @@
+# ===========================================================================
+#  https://www.gnu.org/software/autoconf-archive/ax_cxx_compile_stdcxx.html
+# ===========================================================================
+#
+# SYNOPSIS
+#
+#   AX_CXX_COMPILE_STDCXX(VERSION, [ext|noext], [mandatory|optional])
+#
+# DESCRIPTION
+#
+#   Check for baseline language coverage in the compiler for the specified
+#   version of the C++ standard.  If necessary, add switches to CXX and
+#   CXXCPP to enable support.  VERSION may be '11' (for the C++11 standard)
+#   or '14' (for the C++14 standard).
+#
+#   The second argument, if specified, indicates whether you insist on an
+#   extended mode (e.g. -std=gnu++11) or a strict conformance mode (e.g.
+#   -std=c++11).  If neither is specified, you get whatever works, with
+#   preference for an extended mode.
+#
+#   The third argument, if specified 'mandatory' or if left unspecified,
+#   indicates that baseline support for the specified C++ standard is
+#   required and that the macro should error out if no mode with that
+#   support is found.  If specified 'optional', then configuration proceeds
+#   regardless, after defining HAVE_CXX${VERSION} if and only if a
+#   supporting mode is found.
+#
+# LICENSE
+#
+#   Copyright (c) 2008 Benjamin Kosnik <bkoz@redhat.com>
+#   Copyright (c) 2012 Zack Weinberg <zackw@panix.com>
+#   Copyright (c) 2013 Roy Stogner <roystgnr@ices.utexas.edu>
+#   Copyright (c) 2014, 2015 Google Inc.; contributed by Alexey Sokolov <sokolov@google.com>
+#   Copyright (c) 2015 Paul Norman <penorman@mac.com>
+#   Copyright (c) 2015 Moritz Klammler <moritz@klammler.eu>
+#   Copyright (c) 2016, 2018 Krzesimir Nowak <qdlacz@gmail.com>
+#   Copyright (c) 2019 Enji Cooper <yaneurabeya@gmail.com>
+#
+#   Copying and distribution of this file, with or without modification, are
+#   permitted in any medium without royalty provided the copyright notice
+#   and this notice are preserved.  This file is offered as-is, without any
+#   warranty.
+
+#serial 11
+
+dnl  This macro is based on the code from the AX_CXX_COMPILE_STDCXX_11 macro
+dnl  (serial version number 13).
+
+AC_DEFUN([AX_CXX_COMPILE_STDCXX], [dnl
+  m4_if([$1], [11], [ax_cxx_compile_alternatives="11 0x"],
+        [$1], [14], [ax_cxx_compile_alternatives="14 1y"],
+        [$1], [17], [ax_cxx_compile_alternatives="17 1z"],
+        [m4_fatal([invalid first argument `$1' to AX_CXX_COMPILE_STDCXX])])dnl
+  m4_if([$2], [], [],
+        [$2], [ext], [],
+        [$2], [noext], [],
+        [m4_fatal([invalid second argument `$2' to AX_CXX_COMPILE_STDCXX])])dnl
+  m4_if([$3], [], [ax_cxx_compile_cxx$1_required=true],
+        [$3], [mandatory], [ax_cxx_compile_cxx$1_required=true],
+        [$3], [optional], [ax_cxx_compile_cxx$1_required=false],
+        [m4_fatal([invalid third argument `$3' to AX_CXX_COMPILE_STDCXX])])
+  AC_LANG_PUSH([C++])dnl
+  ac_success=no
+
+  m4_if([$2], [noext], [], [dnl
+  if test x$ac_success = xno; then
+    for alternative in ${ax_cxx_compile_alternatives}; do
+      switch="-std=gnu++${alternative}"
+      cachevar=AS_TR_SH([ax_cv_cxx_compile_cxx$1_$switch])
+      AC_CACHE_CHECK(whether $CXX supports C++$1 features with $switch,
+                     $cachevar,
+        [ac_save_CXX="$CXX"
+         CXX="$CXX $switch"
+         AC_COMPILE_IFELSE([AC_LANG_SOURCE([_AX_CXX_COMPILE_STDCXX_testbody_$1])],
+          [eval $cachevar=yes],
+          [eval $cachevar=no])
+         CXX="$ac_save_CXX"])
+      if eval test x\$$cachevar = xyes; then
+        CXX="$CXX $switch"
+        if test -n "$CXXCPP" ; then
+          CXXCPP="$CXXCPP $switch"
+        fi
+        ac_success=yes
+        break
+      fi
+    done
+  fi])
+
+  m4_if([$2], [ext], [], [dnl
+  if test x$ac_success = xno; then
+    dnl HP's aCC needs +std=c++11 according to:
+    dnl http://h21007.www2.hp.com/portal/download/files/unprot/aCxx/PDF_Release_Notes/769149-001.pdf
+    dnl Cray's crayCC needs "-h std=c++11"
+    for alternative in ${ax_cxx_compile_alternatives}; do
+      for switch in -std=c++${alternative} +std=c++${alternative} "-h std=c++${alternative}"; do
+        cachevar=AS_TR_SH([ax_cv_cxx_compile_cxx$1_$switch])
+        AC_CACHE_CHECK(whether $CXX supports C++$1 features with $switch,
+                       $cachevar,
+          [ac_save_CXX="$CXX"
+           CXX="$CXX $switch"
+           AC_COMPILE_IFELSE([AC_LANG_SOURCE([_AX_CXX_COMPILE_STDCXX_testbody_$1])],
+            [eval $cachevar=yes],
+            [eval $cachevar=no])
+           CXX="$ac_save_CXX"])
+        if eval test x\$$cachevar = xyes; then
+          CXX="$CXX $switch"
+          if test -n "$CXXCPP" ; then
+            CXXCPP="$CXXCPP $switch"
+          fi
+          ac_success=yes
+          break
+        fi
+      done
+      if test x$ac_success = xyes; then
+        break
+      fi
+    done
+  fi])
+  AC_LANG_POP([C++])
+  if test x$ax_cxx_compile_cxx$1_required = xtrue; then
+    if test x$ac_success = xno; then
+      AC_MSG_ERROR([*** A compiler with support for C++$1 language features is required.])
+    fi
+  fi
+  if test x$ac_success = xno; then
+    HAVE_CXX$1=0
+    AC_MSG_NOTICE([No compiler with C++$1 support was found])
+  else
+    HAVE_CXX$1=1
+    AC_DEFINE(HAVE_CXX$1,1,
+              [define if the compiler supports basic C++$1 syntax])
+  fi
+  AC_SUBST(HAVE_CXX$1)
+])
+
+
+dnl  Test body for checking C++11 support
+
+m4_define([_AX_CXX_COMPILE_STDCXX_testbody_11],
+  _AX_CXX_COMPILE_STDCXX_testbody_new_in_11
+)
+
+
+dnl  Test body for checking C++14 support
+
+m4_define([_AX_CXX_COMPILE_STDCXX_testbody_14],
+  _AX_CXX_COMPILE_STDCXX_testbody_new_in_11
+  _AX_CXX_COMPILE_STDCXX_testbody_new_in_14
+)
+
+m4_define([_AX_CXX_COMPILE_STDCXX_testbody_17],
+  _AX_CXX_COMPILE_STDCXX_testbody_new_in_11
+  _AX_CXX_COMPILE_STDCXX_testbody_new_in_14
+  _AX_CXX_COMPILE_STDCXX_testbody_new_in_17
+)
+
+dnl  Tests for new features in C++11
+
+m4_define([_AX_CXX_COMPILE_STDCXX_testbody_new_in_11], [[
+
+// If the compiler admits that it is not ready for C++11, why torture it?
+// Hopefully, this will speed up the test.
+
+#ifndef __cplusplus
+
+#error "This is not a C++ compiler"
+
+#elif __cplusplus < 201103L
+
+#error "This is not a C++11 compiler"
+
+#else
+
+namespace cxx11
+{
+
+  namespace test_static_assert
+  {
+
+    template <typename T>
+    struct check
+    {
+      static_assert(sizeof(int) <= sizeof(T), "not big enough");
+    };
+
+  }
+
+  namespace test_final_override
+  {
+
+    struct Base
+    {
+      virtual ~Base() {}
+      virtual void f() {}
+    };
+
+    struct Derived : public Base
+    {
+      virtual ~Derived() override {}
+      virtual void f() override {}
+    };
+
+  }
+
+  namespace test_double_right_angle_brackets
+  {
+
+    template < typename T >
+    struct check {};
+
+    typedef check<void> single_type;
+    typedef check<check<void>> double_type;
+    typedef check<check<check<void>>> triple_type;
+    typedef check<check<check<check<void>>>> quadruple_type;
+
+  }
+
+  namespace test_decltype
+  {
+
+    int
+    f()
+    {
+      int a = 1;
+      decltype(a) b = 2;
+      return a + b;
+    }
+
+  }
+
+  namespace test_type_deduction
+  {
+
+    template < typename T1, typename T2 >
+    struct is_same
+    {
+      static const bool value = false;
+    };
+
+    template < typename T >
+    struct is_same<T, T>
+    {
+      static const bool value = true;
+    };
+
+    template < typename T1, typename T2 >
+    auto
+    add(T1 a1, T2 a2) -> decltype(a1 + a2)
+    {
+      return a1 + a2;
+    }
+
+    int
+    test(const int c, volatile int v)
+    {
+      static_assert(is_same<int, decltype(0)>::value == true, "");
+      static_assert(is_same<int, decltype(c)>::value == false, "");
+      static_assert(is_same<int, decltype(v)>::value == false, "");
+      auto ac = c;
+      auto av = v;
+      auto sumi = ac + av + 'x';
+      auto sumf = ac + av + 1.0;
+      static_assert(is_same<int, decltype(ac)>::value == true, "");
+      static_assert(is_same<int, decltype(av)>::value == true, "");
+      static_assert(is_same<int, decltype(sumi)>::value == true, "");
+      static_assert(is_same<int, decltype(sumf)>::value == false, "");
+      static_assert(is_same<int, decltype(add(c, v))>::value == true, "");
+      return (sumf > 0.0) ? sumi : add(c, v);
+    }
+
+  }
+
+  namespace test_noexcept
+  {
+
+    int f() { return 0; }
+    int g() noexcept { return 0; }
+
+    static_assert(noexcept(f()) == false, "");
+    static_assert(noexcept(g()) == true, "");
+
+  }
+
+  namespace test_constexpr
+  {
+
+    template < typename CharT >
+    unsigned long constexpr
+    strlen_c_r(const CharT *const s, const unsigned long acc) noexcept
+    {
+      return *s ? strlen_c_r(s + 1, acc + 1) : acc;
+    }
+
+    template < typename CharT >
+    unsigned long constexpr
+    strlen_c(const CharT *const s) noexcept
+    {
+      return strlen_c_r(s, 0UL);
+    }
+
+    static_assert(strlen_c("") == 0UL, "");
+    static_assert(strlen_c("1") == 1UL, "");
+    static_assert(strlen_c("example") == 7UL, "");
+    static_assert(strlen_c("another\0example") == 7UL, "");
+
+  }
+
+  namespace test_rvalue_references
+  {
+
+    template < int N >
+    struct answer
+    {
+      static constexpr int value = N;
+    };
+
+    answer<1> f(int&)       { return answer<1>(); }
+    answer<2> f(const int&) { return answer<2>(); }
+    answer<3> f(int&&)      { return answer<3>(); }
+
+    void
+    test()
+    {
+      int i = 0;
+      const int c = 0;
+      static_assert(decltype(f(i))::value == 1, "");
+      static_assert(decltype(f(c))::value == 2, "");
+      static_assert(decltype(f(0))::value == 3, "");
+    }
+
+  }
+
+  namespace test_uniform_initialization
+  {
+
+    struct test
+    {
+      static const int zero {};
+      static const int one {1};
+    };
+
+    static_assert(test::zero == 0, "");
+    static_assert(test::one == 1, "");
+
+  }
+
+  namespace test_lambdas
+  {
+
+    void
+    test1()
+    {
+      auto lambda1 = [](){};
+      auto lambda2 = lambda1;
+      lambda1();
+      lambda2();
+    }
+
+    int
+    test2()
+    {
+      auto a = [](int i, int j){ return i + j; }(1, 2);
+      auto b = []() -> int { return '0'; }();
+      auto c = [=](){ return a + b; }();
+      auto d = [&](){ return c; }();
+      auto e = [a, &b](int x) mutable {
+        const auto identity = [](int y){ return y; };
+        for (auto i = 0; i < a; ++i)
+          a += b--;
+        return x + identity(a + b);
+      }(0);
+      return a + b + c + d + e;
+    }
+
+    int
+    test3()
+    {
+      const auto nullary = [](){ return 0; };
+      const auto unary = [](int x){ return x; };
+      using nullary_t = decltype(nullary);
+      using unary_t = decltype(unary);
+      const auto higher1st = [](nullary_t f){ return f(); };
+      const auto higher2nd = [unary](nullary_t f1){
+        return [unary, f1](unary_t f2){ return f2(unary(f1())); };
+      };
+      return higher1st(nullary) + higher2nd(nullary)(unary);
+    }
+
+  }
+
+  namespace test_variadic_templates
+  {
+
+    template <int...>
+    struct sum;
+
+    template <int N0, int... N1toN>
+    struct sum<N0, N1toN...>
+    {
+      static constexpr auto value = N0 + sum<N1toN...>::value;
+    };
+
+    template <>
+    struct sum<>
+    {
+      static constexpr auto value = 0;
+    };
+
+    static_assert(sum<>::value == 0, "");
+    static_assert(sum<1>::value == 1, "");
+    static_assert(sum<23>::value == 23, "");
+    static_assert(sum<1, 2>::value == 3, "");
+    static_assert(sum<5, 5, 11>::value == 21, "");
+    static_assert(sum<2, 3, 5, 7, 11, 13>::value == 41, "");
+
+  }
+
+  // http://stackoverflow.com/questions/13728184/template-aliases-and-sfinae
+  // Clang 3.1 fails with headers of libstd++ 4.8.3 when using std::function
+  // because of this.
+  namespace test_template_alias_sfinae
+  {
+
+    struct foo {};
+
+    template<typename T>
+    using member = typename T::member_type;
+
+    template<typename T>
+    void func(...) {}
+
+    template<typename T>
+    void func(member<T>*) {}
+
+    void test();
+
+    void test() { func<foo>(0); }
+
+  }
+
+}  // namespace cxx11
+
+#endif  // __cplusplus >= 201103L
+
+]])
+
+
+dnl  Tests for new features in C++14
+
+m4_define([_AX_CXX_COMPILE_STDCXX_testbody_new_in_14], [[
+
+// If the compiler admits that it is not ready for C++14, why torture it?
+// Hopefully, this will speed up the test.
+
+#ifndef __cplusplus
+
+#error "This is not a C++ compiler"
+
+#elif __cplusplus < 201402L
+
+#error "This is not a C++14 compiler"
+
+#else
+
+namespace cxx14
+{
+
+  namespace test_polymorphic_lambdas
+  {
+
+    int
+    test()
+    {
+      const auto lambda = [](auto&&... args){
+        const auto istiny = [](auto x){
+          return (sizeof(x) == 1UL) ? 1 : 0;
+        };
+        const int aretiny[] = { istiny(args)... };
+        return aretiny[0];
+      };
+      return lambda(1, 1L, 1.0f, '1');
+    }
+
+  }
+
+  namespace test_binary_literals
+  {
+
+    constexpr auto ivii = 0b0000000000101010;
+    static_assert(ivii == 42, "wrong value");
+
+  }
+
+  namespace test_generalized_constexpr
+  {
+
+    template < typename CharT >
+    constexpr unsigned long
+    strlen_c(const CharT *const s) noexcept
+    {
+      auto length = 0UL;
+      for (auto p = s; *p; ++p)
+        ++length;
+      return length;
+    }
+
+    static_assert(strlen_c("") == 0UL, "");
+    static_assert(strlen_c("x") == 1UL, "");
+    static_assert(strlen_c("test") == 4UL, "");
+    static_assert(strlen_c("another\0test") == 7UL, "");
+
+  }
+
+  namespace test_lambda_init_capture
+  {
+
+    int
+    test()
+    {
+      auto x = 0;
+      const auto lambda1 = [a = x](int b){ return a + b; };
+      const auto lambda2 = [a = lambda1(x)](){ return a; };
+      return lambda2();
+    }
+
+  }
+
+  namespace test_digit_separators
+  {
+
+    constexpr auto ten_million = 100'000'000;
+    static_assert(ten_million == 100000000, "");
+
+  }
+
+  namespace test_return_type_deduction
+  {
+
+    auto f(int& x) { return x; }
+    decltype(auto) g(int& x) { return x; }
+
+    template < typename T1, typename T2 >
+    struct is_same
+    {
+      static constexpr auto value = false;
+    };
+
+    template < typename T >
+    struct is_same<T, T>
+    {
+      static constexpr auto value = true;
+    };
+
+    int
+    test()
+    {
+      auto x = 0;
+      static_assert(is_same<int, decltype(f(x))>::value, "");
+      static_assert(is_same<int&, decltype(g(x))>::value, "");
+      return x;
+    }
+
+  }
+
+}  // namespace cxx14
+
+#endif  // __cplusplus >= 201402L
+
+]])
+
+
+dnl  Tests for new features in C++17
+
+m4_define([_AX_CXX_COMPILE_STDCXX_testbody_new_in_17], [[
+
+// If the compiler admits that it is not ready for C++17, why torture it?
+// Hopefully, this will speed up the test.
+
+#ifndef __cplusplus
+
+#error "This is not a C++ compiler"
+
+#elif __cplusplus < 201703L
+
+#error "This is not a C++17 compiler"
+
+#else
+
+#include <initializer_list>
+#include <utility>
+#include <type_traits>
+
+namespace cxx17
+{
+
+  namespace test_constexpr_lambdas
+  {
+
+    constexpr int foo = [](){return 42;}();
+
+  }
+
+  namespace test::nested_namespace::definitions
+  {
+
+  }
+
+  namespace test_fold_expression
+  {
+
+    template<typename... Args>
+    int multiply(Args... args)
+    {
+      return (args * ... * 1);
+    }
+
+    template<typename... Args>
+    bool all(Args... args)
+    {
+      return (args && ...);
+    }
+
+  }
+
+  namespace test_extended_static_assert
+  {
+
+    static_assert (true);
+
+  }
+
+  namespace test_auto_brace_init_list
+  {
+
+    auto foo = {5};
+    auto bar {5};
+
+    static_assert(std::is_same<std::initializer_list<int>, decltype(foo)>::value);
+    static_assert(std::is_same<int, decltype(bar)>::value);
+  }
+
+  namespace test_typename_in_template_template_parameter
+  {
+
+    template<template<typename> typename X> struct D;
+
+  }
+
+  namespace test_fallthrough_nodiscard_maybe_unused_attributes
+  {
+
+    int f1()
+    {
+      return 42;
+    }
+
+    [[nodiscard]] int f2()
+    {
+      [[maybe_unused]] auto unused = f1();
+
+      switch (f1())
+      {
+      case 17:
+        f1();
+        [[fallthrough]];
+      case 42:
+        f1();
+      }
+      return f1();
+    }
+
+  }
+
+  namespace test_extended_aggregate_initialization
+  {
+
+    struct base1
+    {
+      int b1, b2 = 42;
+    };
+
+    struct base2
+    {
+      base2() {
+        b3 = 42;
+      }
+      int b3;
+    };
+
+    struct derived : base1, base2
+    {
+        int d;
+    };
+
+    derived d1 {{1, 2}, {}, 4};  // full initialization
+    derived d2 {{}, {}, 4};      // value-initialized bases
+
+  }
+
+  namespace test_general_range_based_for_loop
+  {
+
+    struct iter
+    {
+      int i;
+
+      int& operator* ()
+      {
+        return i;
+      }
+
+      const int& operator* () const
+      {
+        return i;
+      }
+
+      iter& operator++()
+      {
+        ++i;
+        return *this;
+      }
+    };
+
+    struct sentinel
+    {
+      int i;
+    };
+
+    bool operator== (const iter& i, const sentinel& s)
+    {
+      return i.i == s.i;
+    }
+
+    bool operator!= (const iter& i, const sentinel& s)
+    {
+      return !(i == s);
+    }
+
+    struct range
+    {
+      iter begin() const
+      {
+        return {0};
+      }
+
+      sentinel end() const
+      {
+        return {5};
+      }
+    };
+
+    void f()
+    {
+      range r {};
+
+      for (auto i : r)
+      {
+        [[maybe_unused]] auto v = i;
+      }
+    }
+
+  }
+
+  namespace test_lambda_capture_asterisk_this_by_value
+  {
+
+    struct t
+    {
+      int i;
+      int foo()
+      {
+        return [*this]()
+        {
+          return i;
+        }();
+      }
+    };
+
+  }
+
+  namespace test_enum_class_construction
+  {
+
+    enum class byte : unsigned char
+    {};
+
+    byte foo {42};
+
+  }
+
+  namespace test_constexpr_if
+  {
+
+    template <bool cond>
+    int f ()
+    {
+      if constexpr(cond)
+      {
+        return 13;
+      }
+      else
+      {
+        return 42;
+      }
+    }
+
+  }
+
+  namespace test_selection_statement_with_initializer
+  {
+
+    int f()
+    {
+      return 13;
+    }
+
+    int f2()
+    {
+      if (auto i = f(); i > 0)
+      {
+        return 3;
+      }
+
+      switch (auto i = f(); i + 4)
+      {
+      case 17:
+        return 2;
+
+      default:
+        return 1;
+      }
+    }
+
+  }
+
+  namespace test_template_argument_deduction_for_class_templates
+  {
+
+    template <typename T1, typename T2>
+    struct pair
+    {
+      pair (T1 p1, T2 p2)
+        : m1 {p1},
+          m2 {p2}
+      {}
+
+      T1 m1;
+      T2 m2;
+    };
+
+    void f()
+    {
+      [[maybe_unused]] auto p = pair{13, 42u};
+    }
+
+  }
+
+  namespace test_non_type_auto_template_parameters
+  {
+
+    template <auto n>
+    struct B
+    {};
+
+    B<5> b1;
+    B<'a'> b2;
+
+  }
+
+  namespace test_structured_bindings
+  {
+
+    int arr[2] = { 1, 2 };
+    std::pair<int, int> pr = { 1, 2 };
+
+    auto f1() -> int(&)[2]
+    {
+      return arr;
+    }
+
+    auto f2() -> std::pair<int, int>&
+    {
+      return pr;
+    }
+
+    struct S
+    {
+      int x1 : 2;
+      volatile double y1;
+    };
+
+    S f3()
+    {
+      return {};
+    }
+
+    auto [ x1, y1 ] = f1();
+    auto& [ xr1, yr1 ] = f1();
+    auto [ x2, y2 ] = f2();
+    auto& [ xr2, yr2 ] = f2();
+    const auto [ x3, y3 ] = f3();
+
+  }
+
+  namespace test_exception_spec_type_system
+  {
+
+    struct Good {};
+    struct Bad {};
+
+    void g1() noexcept;
+    void g2();
+
+    template<typename T>
+    Bad
+    f(T*, T*);
+
+    template<typename T1, typename T2>
+    Good
+    f(T1*, T2*);
+
+    static_assert (std::is_same_v<Good, decltype(f(g1, g2))>);
+
+  }
+
+  namespace test_inline_variables
+  {
+
+    template<class T> void f(T)
+    {}
+
+    template<class T> inline T g(T)
+    {
+      return T{};
+    }
+
+    template<> inline void f<>(int)
+    {}
+
+    template<> int g<>(int)
+    {
+      return 5;
+    }
+
+  }
+
+}  // namespace cxx17
+
+#endif  // __cplusplus < 201703L
+
+]])
diff --git a/deps/jemalloc/msvc/ReadMe.txt b/deps/jemalloc/msvc/ReadMe.txt
new file mode 100644
index 0000000..633a7d4
--- /dev/null
+++ b/deps/jemalloc/msvc/ReadMe.txt
@@ -0,0 +1,23 @@
+
+How to build jemalloc for Windows
+=================================
+
+1. Install Cygwin with at least the following packages:
+   * autoconf
+   * autogen
+   * gawk
+   * grep
+   * sed
+
+2. Install Visual Studio 2015 or 2017 with Visual C++
+
+3. Add Cygwin\bin to the PATH environment variable
+
+4. Open "x64 Native Tools Command Prompt for VS 2017"
+   (note: x86/x64 doesn't matter at this point)
+
+5. Generate header files:
+   sh -c "CC=cl ./autogen.sh"
+
+6. Now the project can be opened and built in Visual Studio:
+   msvc\jemalloc_vc2017.sln
diff --git a/deps/jemalloc/msvc/jemalloc_vc2015.sln b/deps/jemalloc/msvc/jemalloc_vc2015.sln
new file mode 100644
index 0000000..aedd5e5
--- /dev/null
+++ b/deps/jemalloc/msvc/jemalloc_vc2015.sln
@@ -0,0 +1,63 @@
+
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio 14
+VisualStudioVersion = 14.0.24720.0
+MinimumVisualStudioVersion = 10.0.40219.1
+Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "Solution Items", "Solution Items", "{70A99006-6DE9-472B-8F83-4CEE6C616DF3}"
+	ProjectSection(SolutionItems) = preProject
+		ReadMe.txt = ReadMe.txt
+	EndProjectSection
+EndProject
+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "jemalloc", "projects\vc2015\jemalloc\jemalloc.vcxproj", "{8D6BB292-9E1C-413D-9F98-4864BDC1514A}"
+EndProject
+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "test_threads", "projects\vc2015\test_threads\test_threads.vcxproj", "{09028CFD-4EB7-491D-869C-0708DB97ED44}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|x64 = Debug|x64
+		Debug|x86 = Debug|x86
+		Debug-static|x64 = Debug-static|x64
+		Debug-static|x86 = Debug-static|x86
+		Release|x64 = Release|x64
+		Release|x86 = Release|x86
+		Release-static|x64 = Release-static|x64
+		Release-static|x86 = Release-static|x86
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{8D6BB292-9E1C-413D-9F98-4864BDC1514A}.Debug|x64.ActiveCfg = Debug|x64
+		{8D6BB292-9E1C-413D-9F98-4864BDC1514A}.Debug|x64.Build.0 = Debug|x64
+		{8D6BB292-9E1C-413D-9F98-4864BDC1514A}.Debug|x86.ActiveCfg = Debug|Win32
+		{8D6BB292-9E1C-413D-9F98-4864BDC1514A}.Debug|x86.Build.0 = Debug|Win32
+		{8D6BB292-9E1C-413D-9F98-4864BDC1514A}.Debug-static|x64.ActiveCfg = Debug-static|x64
+		{8D6BB292-9E1C-413D-9F98-4864BDC1514A}.Debug-static|x64.Build.0 = Debug-static|x64
+		{8D6BB292-9E1C-413D-9F98-4864BDC1514A}.Debug-static|x86.ActiveCfg = Debug-static|Win32
+		{8D6BB292-9E1C-413D-9F98-4864BDC1514A}.Debug-static|x86.Build.0 = Debug-static|Win32
+		{8D6BB292-9E1C-413D-9F98-4864BDC1514A}.Release|x64.ActiveCfg = Release|x64
+		{8D6BB292-9E1C-413D-9F98-4864BDC1514A}.Release|x64.Build.0 = Release|x64
+		{8D6BB292-9E1C-413D-9F98-4864BDC1514A}.Release|x86.ActiveCfg = Release|Win32
+		{8D6BB292-9E1C-413D-9F98-4864BDC1514A}.Release|x86.Build.0 = Release|Win32
+		{8D6BB292-9E1C-413D-9F98-4864BDC1514A}.Release-static|x64.ActiveCfg = Release-static|x64
+		{8D6BB292-9E1C-413D-9F98-4864BDC1514A}.Release-static|x64.Build.0 = Release-static|x64
+		{8D6BB292-9E1C-413D-9F98-4864BDC1514A}.Release-static|x86.ActiveCfg = Release-static|Win32
+		{8D6BB292-9E1C-413D-9F98-4864BDC1514A}.Release-static|x86.Build.0 = Release-static|Win32
+		{09028CFD-4EB7-491D-869C-0708DB97ED44}.Debug|x64.ActiveCfg = Debug|x64
+		{09028CFD-4EB7-491D-869C-0708DB97ED44}.Debug|x64.Build.0 = Debug|x64
+		{09028CFD-4EB7-491D-869C-0708DB97ED44}.Debug|x86.ActiveCfg = Debug|Win32
+		{09028CFD-4EB7-491D-869C-0708DB97ED44}.Debug|x86.Build.0 = Debug|Win32
+		{09028CFD-4EB7-491D-869C-0708DB97ED44}.Debug-static|x64.ActiveCfg = Debug-static|x64
+		{09028CFD-4EB7-491D-869C-0708DB97ED44}.Debug-static|x64.Build.0 = Debug-static|x64
+		{09028CFD-4EB7-491D-869C-0708DB97ED44}.Debug-static|x86.ActiveCfg = Debug-static|Win32
+		{09028CFD-4EB7-491D-869C-0708DB97ED44}.Debug-static|x86.Build.0 = Debug-static|Win32
+		{09028CFD-4EB7-491D-869C-0708DB97ED44}.Release|x64.ActiveCfg = Release|x64
+		{09028CFD-4EB7-491D-869C-0708DB97ED44}.Release|x64.Build.0 = Release|x64
+		{09028CFD-4EB7-491D-869C-0708DB97ED44}.Release|x86.ActiveCfg = Release|Win32
+		{09028CFD-4EB7-491D-869C-0708DB97ED44}.Release|x86.Build.0 = Release|Win32
+		{09028CFD-4EB7-491D-869C-0708DB97ED44}.Release-static|x64.ActiveCfg = Release-static|x64
+		{09028CFD-4EB7-491D-869C-0708DB97ED44}.Release-static|x64.Build.0 = Release-static|x64
+		{09028CFD-4EB7-491D-869C-0708DB97ED44}.Release-static|x86.ActiveCfg = Release-static|Win32
+		{09028CFD-4EB7-491D-869C-0708DB97ED44}.Release-static|x86.Build.0 = Release-static|Win32
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+EndGlobal
diff --git a/deps/jemalloc/msvc/jemalloc_vc2017.sln b/deps/jemalloc/msvc/jemalloc_vc2017.sln
new file mode 100644
index 0000000..c22fcb4
--- /dev/null
+++ b/deps/jemalloc/msvc/jemalloc_vc2017.sln
@@ -0,0 +1,63 @@
+
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio 14
+VisualStudioVersion = 14.0.24720.0
+MinimumVisualStudioVersion = 10.0.40219.1
+Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "Solution Items", "Solution Items", "{70A99006-6DE9-472B-8F83-4CEE6C616DF3}"
+	ProjectSection(SolutionItems) = preProject
+		ReadMe.txt = ReadMe.txt
+	EndProjectSection
+EndProject
+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "jemalloc", "projects\vc2017\jemalloc\jemalloc.vcxproj", "{8D6BB292-9E1C-413D-9F98-4864BDC1514A}"
+EndProject
+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "test_threads", "projects\vc2017\test_threads\test_threads.vcxproj", "{09028CFD-4EB7-491D-869C-0708DB97ED44}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|x64 = Debug|x64
+		Debug|x86 = Debug|x86
+		Debug-static|x64 = Debug-static|x64
+		Debug-static|x86 = Debug-static|x86
+		Release|x64 = Release|x64
+		Release|x86 = Release|x86
+		Release-static|x64 = Release-static|x64
+		Release-static|x86 = Release-static|x86
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{8D6BB292-9E1C-413D-9F98-4864BDC1514A}.Debug|x64.ActiveCfg = Debug|x64
+		{8D6BB292-9E1C-413D-9F98-4864BDC1514A}.Debug|x64.Build.0 = Debug|x64
+		{8D6BB292-9E1C-413D-9F98-4864BDC1514A}.Debug|x86.ActiveCfg = Debug|Win32
+		{8D6BB292-9E1C-413D-9F98-4864BDC1514A}.Debug|x86.Build.0 = Debug|Win32
+		{8D6BB292-9E1C-413D-9F98-4864BDC1514A}.Debug-static|x64.ActiveCfg = Debug-static|x64
+		{8D6BB292-9E1C-413D-9F98-4864BDC1514A}.Debug-static|x64.Build.0 = Debug-static|x64
+		{8D6BB292-9E1C-413D-9F98-4864BDC1514A}.Debug-static|x86.ActiveCfg = Debug-static|Win32
+		{8D6BB292-9E1C-413D-9F98-4864BDC1514A}.Debug-static|x86.Build.0 = Debug-static|Win32
+		{8D6BB292-9E1C-413D-9F98-4864BDC1514A}.Release|x64.ActiveCfg = Release|x64
+		{8D6BB292-9E1C-413D-9F98-4864BDC1514A}.Release|x64.Build.0 = Release|x64
+		{8D6BB292-9E1C-413D-9F98-4864BDC1514A}.Release|x86.ActiveCfg = Release|Win32
+		{8D6BB292-9E1C-413D-9F98-4864BDC1514A}.Release|x86.Build.0 = Release|Win32
+		{8D6BB292-9E1C-413D-9F98-4864BDC1514A}.Release-static|x64.ActiveCfg = Release-static|x64
+		{8D6BB292-9E1C-413D-9F98-4864BDC1514A}.Release-static|x64.Build.0 = Release-static|x64
+		{8D6BB292-9E1C-413D-9F98-4864BDC1514A}.Release-static|x86.ActiveCfg = Release-static|Win32
+		{8D6BB292-9E1C-413D-9F98-4864BDC1514A}.Release-static|x86.Build.0 = Release-static|Win32
+		{09028CFD-4EB7-491D-869C-0708DB97ED44}.Debug|x64.ActiveCfg = Debug|x64
+		{09028CFD-4EB7-491D-869C-0708DB97ED44}.Debug|x64.Build.0 = Debug|x64
+		{09028CFD-4EB7-491D-869C-0708DB97ED44}.Debug|x86.ActiveCfg = Debug|Win32
+		{09028CFD-4EB7-491D-869C-0708DB97ED44}.Debug|x86.Build.0 = Debug|Win32
+		{09028CFD-4EB7-491D-869C-0708DB97ED44}.Debug-static|x64.ActiveCfg = Debug-static|x64
+		{09028CFD-4EB7-491D-869C-0708DB97ED44}.Debug-static|x64.Build.0 = Debug-static|x64
+		{09028CFD-4EB7-491D-869C-0708DB97ED44}.Debug-static|x86.ActiveCfg = Debug-static|Win32
+		{09028CFD-4EB7-491D-869C-0708DB97ED44}.Debug-static|x86.Build.0 = Debug-static|Win32
+		{09028CFD-4EB7-491D-869C-0708DB97ED44}.Release|x64.ActiveCfg = Release|x64
+		{09028CFD-4EB7-491D-869C-0708DB97ED44}.Release|x64.Build.0 = Release|x64
+		{09028CFD-4EB7-491D-869C-0708DB97ED44}.Release|x86.ActiveCfg = Release|Win32
+		{09028CFD-4EB7-491D-869C-0708DB97ED44}.Release|x86.Build.0 = Release|Win32
+		{09028CFD-4EB7-491D-869C-0708DB97ED44}.Release-static|x64.ActiveCfg = Release-static|x64
+		{09028CFD-4EB7-491D-869C-0708DB97ED44}.Release-static|x64.Build.0 = Release-static|x64
+		{09028CFD-4EB7-491D-869C-0708DB97ED44}.Release-static|x86.ActiveCfg = Release-static|Win32
+		{09028CFD-4EB7-491D-869C-0708DB97ED44}.Release-static|x86.Build.0 = Release-static|Win32
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+EndGlobal
diff --git a/deps/jemalloc/msvc/projects/vc2015/jemalloc/jemalloc.vcxproj b/deps/jemalloc/msvc/projects/vc2015/jemalloc/jemalloc.vcxproj
new file mode 100644
index 0000000..ec028a1
--- /dev/null
+++ b/deps/jemalloc/msvc/projects/vc2015/jemalloc/jemalloc.vcxproj
@@ -0,0 +1,380 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project DefaultTargets="Build" ToolsVersion="14.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <ItemGroup Label="ProjectConfigurations">
+    <ProjectConfiguration Include="Debug-static|Win32">
+      <Configuration>Debug-static</Configuration>
+      <Platform>Win32</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Debug-static|x64">
+      <Configuration>Debug-static</Configuration>
+      <Platform>x64</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Debug|Win32">
+      <Configuration>Debug</Configuration>
+      <Platform>Win32</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Release-static|Win32">
+      <Configuration>Release-static</Configuration>
+      <Platform>Win32</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Release-static|x64">
+      <Configuration>Release-static</Configuration>
+      <Platform>x64</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Release|Win32">
+      <Configuration>Release</Configuration>
+      <Platform>Win32</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Debug|x64">
+      <Configuration>Debug</Configuration>
+      <Platform>x64</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Release|x64">
+      <Configuration>Release</Configuration>
+      <Platform>x64</Platform>
+    </ProjectConfiguration>
+  </ItemGroup>
+  <ItemGroup>
+    <ClCompile Include="..\..\..\..\src\arena.c" />
+    <ClCompile Include="..\..\..\..\src\background_thread.c" />
+    <ClCompile Include="..\..\..\..\src\base.c" />
+    <ClCompile Include="..\..\..\..\src\bin.c" />
+    <ClCompile Include="..\..\..\..\src\bin_info.c" />
+    <ClCompile Include="..\..\..\..\src\bitmap.c" />
+    <ClCompile Include="..\..\..\..\src\buf_writer.c" />
+    <ClCompile Include="..\..\..\..\src\cache_bin.c" />
+    <ClCompile Include="..\..\..\..\src\ckh.c" />
+    <ClCompile Include="..\..\..\..\src\counter.c" />
+    <ClCompile Include="..\..\..\..\src\ctl.c" />
+    <ClCompile Include="..\..\..\..\src\decay.c" />
+    <ClCompile Include="..\..\..\..\src\div.c" />
+    <ClCompile Include="..\..\..\..\src\ecache.c" />
+    <ClCompile Include="..\..\..\..\src\edata.c" />
+    <ClCompile Include="..\..\..\..\src\edata_cache.c" />
+    <ClCompile Include="..\..\..\..\src\ehooks.c" />
+    <ClCompile Include="..\..\..\..\src\emap.c" />
+    <ClCompile Include="..\..\..\..\src\eset.c" />
+    <ClCompile Include="..\..\..\..\src\exp_grow.c" />
+    <ClCompile Include="..\..\..\..\src\extent.c" />
+    <ClCompile Include="..\..\..\..\src\extent_dss.c" />
+    <ClCompile Include="..\..\..\..\src\extent_mmap.c" />
+    <ClCompile Include="..\..\..\..\src\fxp.c" />
+    <ClCompile Include="..\..\..\..\src\hook.c" />
+    <ClCompile Include="..\..\..\..\src\hpa.c" />
+    <ClCompile Include="..\..\..\..\src\hpa_hooks.c" />
+    <ClCompile Include="..\..\..\..\src\hpdata.c" />
+    <ClCompile Include="..\..\..\..\src\inspect.c" />
+    <ClCompile Include="..\..\..\..\src\jemalloc.c" />
+    <ClCompile Include="..\..\..\..\src\large.c" />
+    <ClCompile Include="..\..\..\..\src\log.c" />
+    <ClCompile Include="..\..\..\..\src\malloc_io.c" />
+    <ClCompile Include="..\..\..\..\src\mutex.c" />
+    <ClCompile Include="..\..\..\..\src\nstime.c" />
+    <ClCompile Include="..\..\..\..\src\pa.c" />
+    <ClCompile Include="..\..\..\..\src\pa_extra.c" />
+    <ClCompile Include="..\..\..\..\src\pai.c" />
+    <ClCompile Include="..\..\..\..\src\pac.c" />
+    <ClCompile Include="..\..\..\..\src\pages.c" />
+    <ClCompile Include="..\..\..\..\src\peak_event.c" />
+    <ClCompile Include="..\..\..\..\src\prof.c" />
+    <ClCompile Include="..\..\..\..\src\prof_data.c" />
+    <ClCompile Include="..\..\..\..\src\prof_log.c" />
+    <ClCompile Include="..\..\..\..\src\prof_recent.c" />
+    <ClCompile Include="..\..\..\..\src\prof_stats.c" />
+    <ClCompile Include="..\..\..\..\src\prof_sys.c" />
+    <ClCompile Include="..\..\..\..\src\psset.c" />
+    <ClCompile Include="..\..\..\..\src\rtree.c" />
+    <ClCompile Include="..\..\..\..\src\safety_check.c" />
+    <ClCompile Include="..\..\..\..\src\san.c" />
+    <ClCompile Include="..\..\..\..\src\san_bump.c" />
+    <ClCompile Include="..\..\..\..\src\sc.c" />
+    <ClCompile Include="..\..\..\..\src\sec.c" />
+    <ClCompile Include="..\..\..\..\src\stats.c" />
+    <ClCompile Include="..\..\..\..\src\sz.c" />
+    <ClCompile Include="..\..\..\..\src\tcache.c" />
+    <ClCompile Include="..\..\..\..\src\test_hooks.c" />
+    <ClCompile Include="..\..\..\..\src\thread_event.c" />
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+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release-static|Win32'">
+    <OutDir>$(SolutionDir)$(Platform)\$(Configuration)\</OutDir>
+    <IntDir>$(Platform)\$(Configuration)\</IntDir>
+    <LinkIncremental>false</LinkIncremental>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'">
+    <OutDir>$(SolutionDir)$(Platform)\$(Configuration)\</OutDir>
+    <IntDir>$(Platform)\$(Configuration)\</IntDir>
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+    <OutDir>$(SolutionDir)$(Platform)\$(Configuration)\</OutDir>
+    <IntDir>$(Platform)\$(Configuration)\</IntDir>
+    <LinkIncremental>false</LinkIncremental>
+  </PropertyGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
+    <ClCompile>
+      <PrecompiledHeader>
+      </PrecompiledHeader>
+      <WarningLevel>Level3</WarningLevel>
+      <Optimization>Disabled</Optimization>
+      <PreprocessorDefinitions>WIN32;_DEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <AdditionalIncludeDirectories>..\..\..\..\test\include;..\..\..\..\include;..\..\..\..\include\msvc_compat;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+    </ClCompile>
+    <Link>
+      <SubSystem>Console</SubSystem>
+      <GenerateDebugInformation>true</GenerateDebugInformation>
+      <AdditionalLibraryDirectories>$(SolutionDir)$(Platform)\$(Configuration)</AdditionalLibraryDirectories>
+      <AdditionalDependencies>jemallocd.lib;kernel32.lib;user32.lib;gdi32.lib;winspool.lib;comdlg32.lib;advapi32.lib;shell32.lib;ole32.lib;oleaut32.lib;uuid.lib;odbc32.lib;odbccp32.lib;%(AdditionalDependencies)</AdditionalDependencies>
+    </Link>
+  </ItemDefinitionGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug-static|Win32'">
+    <ClCompile>
+      <PrecompiledHeader>
+      </PrecompiledHeader>
+      <WarningLevel>Level3</WarningLevel>
+      <Optimization>Disabled</Optimization>
+      <PreprocessorDefinitions>JEMALLOC_EXPORT=;JEMALLOC_STATIC;_DEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <AdditionalIncludeDirectories>..\..\..\..\test\include;..\..\..\..\include;..\..\..\..\include\msvc_compat;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <RuntimeLibrary>MultiThreadedDebug</RuntimeLibrary>
+    </ClCompile>
+    <Link>
+      <SubSystem>Console</SubSystem>
+      <GenerateDebugInformation>true</GenerateDebugInformation>
+      <AdditionalLibraryDirectories>$(SolutionDir)$(Platform)\$(Configuration)</AdditionalLibraryDirectories>
+      <AdditionalDependencies>jemalloc-$(PlatformToolset)-$(Configuration).lib;kernel32.lib;user32.lib;gdi32.lib;winspool.lib;comdlg32.lib;advapi32.lib;shell32.lib;ole32.lib;oleaut32.lib;uuid.lib;odbc32.lib;odbccp32.lib;%(AdditionalDependencies)</AdditionalDependencies>
+    </Link>
+  </ItemDefinitionGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">
+    <ClCompile>
+      <PrecompiledHeader>
+      </PrecompiledHeader>
+      <WarningLevel>Level3</WarningLevel>
+      <Optimization>Disabled</Optimization>
+      <PreprocessorDefinitions>_DEBUG;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <AdditionalIncludeDirectories>..\..\..\..\test\include;..\..\..\..\include;..\..\..\..\include\msvc_compat;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+    </ClCompile>
+    <Link>
+      <SubSystem>Console</SubSystem>
+      <GenerateDebugInformation>true</GenerateDebugInformation>
+      <AdditionalDependencies>jemallocd.lib;kernel32.lib;user32.lib;gdi32.lib;winspool.lib;comdlg32.lib;advapi32.lib;shell32.lib;ole32.lib;oleaut32.lib;uuid.lib;odbc32.lib;odbccp32.lib;%(AdditionalDependencies)</AdditionalDependencies>
+      <AdditionalLibraryDirectories>$(SolutionDir)$(Platform)\$(Configuration)</AdditionalLibraryDirectories>
+    </Link>
+  </ItemDefinitionGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug-static|x64'">
+    <ClCompile>
+      <PrecompiledHeader>
+      </PrecompiledHeader>
+      <WarningLevel>Level3</WarningLevel>
+      <Optimization>Disabled</Optimization>
+      <PreprocessorDefinitions>JEMALLOC_EXPORT=;JEMALLOC_STATIC;_DEBUG;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <AdditionalIncludeDirectories>..\..\..\..\test\include;..\..\..\..\include;..\..\..\..\include\msvc_compat;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <RuntimeLibrary>MultiThreadedDebug</RuntimeLibrary>
+    </ClCompile>
+    <Link>
+      <SubSystem>Console</SubSystem>
+      <GenerateDebugInformation>true</GenerateDebugInformation>
+      <AdditionalDependencies>jemalloc-vc$(PlatformToolsetVersion)-$(Configuration).lib;kernel32.lib;user32.lib;gdi32.lib;winspool.lib;comdlg32.lib;advapi32.lib;shell32.lib;ole32.lib;oleaut32.lib;uuid.lib;odbc32.lib;odbccp32.lib;%(AdditionalDependencies)</AdditionalDependencies>
+      <AdditionalLibraryDirectories>$(SolutionDir)$(Platform)\$(Configuration)</AdditionalLibraryDirectories>
+    </Link>
+  </ItemDefinitionGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
+    <ClCompile>
+      <WarningLevel>Level3</WarningLevel>
+      <PrecompiledHeader>
+      </PrecompiledHeader>
+      <Optimization>MaxSpeed</Optimization>
+      <FunctionLevelLinking>true</FunctionLevelLinking>
+      <IntrinsicFunctions>true</IntrinsicFunctions>
+      <PreprocessorDefinitions>WIN32;NDEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <AdditionalIncludeDirectories>..\..\..\..\test\include;..\..\..\..\include;..\..\..\..\include\msvc_compat;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+    </ClCompile>
+    <Link>
+      <SubSystem>Console</SubSystem>
+      <GenerateDebugInformation>true</GenerateDebugInformation>
+      <EnableCOMDATFolding>true</EnableCOMDATFolding>
+      <OptimizeReferences>true</OptimizeReferences>
+      <AdditionalLibraryDirectories>$(SolutionDir)$(Platform)\$(Configuration)</AdditionalLibraryDirectories>
+      <AdditionalDependencies>jemalloc.lib;kernel32.lib;user32.lib;gdi32.lib;winspool.lib;comdlg32.lib;advapi32.lib;shell32.lib;ole32.lib;oleaut32.lib;uuid.lib;odbc32.lib;odbccp32.lib;%(AdditionalDependencies)</AdditionalDependencies>
+    </Link>
+  </ItemDefinitionGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release-static|Win32'">
+    <ClCompile>
+      <WarningLevel>Level3</WarningLevel>
+      <PrecompiledHeader>
+      </PrecompiledHeader>
+      <Optimization>MaxSpeed</Optimization>
+      <FunctionLevelLinking>true</FunctionLevelLinking>
+      <IntrinsicFunctions>true</IntrinsicFunctions>
+      <PreprocessorDefinitions>JEMALLOC_EXPORT=;JEMALLOC_STATIC;NDEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <AdditionalIncludeDirectories>..\..\..\..\test\include;..\..\..\..\include;..\..\..\..\include\msvc_compat;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <RuntimeLibrary>MultiThreaded</RuntimeLibrary>
+    </ClCompile>
+    <Link>
+      <SubSystem>Console</SubSystem>
+      <GenerateDebugInformation>true</GenerateDebugInformation>
+      <EnableCOMDATFolding>true</EnableCOMDATFolding>
+      <OptimizeReferences>true</OptimizeReferences>
+      <AdditionalLibraryDirectories>$(SolutionDir)$(Platform)\$(Configuration)</AdditionalLibraryDirectories>
+      <AdditionalDependencies>jemalloc-$(PlatformToolset)-$(Configuration).lib;kernel32.lib;user32.lib;gdi32.lib;winspool.lib;comdlg32.lib;advapi32.lib;shell32.lib;ole32.lib;oleaut32.lib;uuid.lib;odbc32.lib;odbccp32.lib;%(AdditionalDependencies)</AdditionalDependencies>
+    </Link>
+  </ItemDefinitionGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'">
+    <ClCompile>
+      <WarningLevel>Level3</WarningLevel>
+      <PrecompiledHeader>
+      </PrecompiledHeader>
+      <Optimization>MaxSpeed</Optimization>
+      <FunctionLevelLinking>true</FunctionLevelLinking>
+      <IntrinsicFunctions>true</IntrinsicFunctions>
+      <PreprocessorDefinitions>NDEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <AdditionalIncludeDirectories>..\..\..\..\test\include;..\..\..\..\include;..\..\..\..\include\msvc_compat;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+    </ClCompile>
+    <Link>
+      <SubSystem>Console</SubSystem>
+      <GenerateDebugInformation>true</GenerateDebugInformation>
+      <EnableCOMDATFolding>true</EnableCOMDATFolding>
+      <OptimizeReferences>true</OptimizeReferences>
+      <AdditionalLibraryDirectories>$(SolutionDir)$(Platform)\$(Configuration)</AdditionalLibraryDirectories>
+      <AdditionalDependencies>jemalloc.lib;kernel32.lib;user32.lib;gdi32.lib;winspool.lib;comdlg32.lib;advapi32.lib;shell32.lib;ole32.lib;oleaut32.lib;uuid.lib;odbc32.lib;odbccp32.lib;%(AdditionalDependencies)</AdditionalDependencies>
+    </Link>
+  </ItemDefinitionGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release-static|x64'">
+    <ClCompile>
+      <WarningLevel>Level3</WarningLevel>
+      <PrecompiledHeader>
+      </PrecompiledHeader>
+      <Optimization>MaxSpeed</Optimization>
+      <FunctionLevelLinking>true</FunctionLevelLinking>
+      <IntrinsicFunctions>true</IntrinsicFunctions>
+      <PreprocessorDefinitions>JEMALLOC_EXPORT=;JEMALLOC_STATIC;NDEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <AdditionalIncludeDirectories>..\..\..\..\test\include;..\..\..\..\include;..\..\..\..\include\msvc_compat;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <RuntimeLibrary>MultiThreaded</RuntimeLibrary>
+    </ClCompile>
+    <Link>
+      <SubSystem>Console</SubSystem>
+      <GenerateDebugInformation>true</GenerateDebugInformation>
+      <EnableCOMDATFolding>true</EnableCOMDATFolding>
+      <OptimizeReferences>true</OptimizeReferences>
+      <AdditionalLibraryDirectories>$(SolutionDir)$(Platform)\$(Configuration)</AdditionalLibraryDirectories>
+      <AdditionalDependencies>jemalloc-vc$(PlatformToolsetVersion)-$(Configuration).lib;kernel32.lib;user32.lib;gdi32.lib;winspool.lib;comdlg32.lib;advapi32.lib;shell32.lib;ole32.lib;oleaut32.lib;uuid.lib;odbc32.lib;odbccp32.lib;%(AdditionalDependencies)</AdditionalDependencies>
+    </Link>
+  </ItemDefinitionGroup>
+  <ItemGroup>
+    <ClCompile Include="..\..\..\test_threads\test_threads.cpp" />
+    <ClCompile Include="..\..\..\test_threads\test_threads_main.cpp" />
+  </ItemGroup>
+  <ItemGroup>
+    <ProjectReference Include="..\jemalloc\jemalloc.vcxproj">
+      <Project>{8d6bb292-9e1c-413d-9f98-4864bdc1514a}</Project>
+    </ProjectReference>
+  </ItemGroup>
+  <ItemGroup>
+    <ClInclude Include="..\..\..\test_threads\test_threads.h" />
+  </ItemGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
+  <ImportGroup Label="ExtensionTargets">
+  </ImportGroup>
+</Project>
\ No newline at end of file
diff --git a/deps/jemalloc/msvc/projects/vc2017/test_threads/test_threads.vcxproj.filters b/deps/jemalloc/msvc/projects/vc2017/test_threads/test_threads.vcxproj.filters
new file mode 100644
index 0000000..fa4588f
--- /dev/null
+++ b/deps/jemalloc/msvc/projects/vc2017/test_threads/test_threads.vcxproj.filters
@@ -0,0 +1,26 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <ItemGroup>
+    <Filter Include="Source Files">
+      <UniqueIdentifier>{4FC737F1-C7A5-4376-A066-2A32D752A2FF}</UniqueIdentifier>
+      <Extensions>cpp;c;cc;cxx;def;odl;idl;hpj;bat;asm;asmx</Extensions>
+    </Filter>
+    <Filter Include="Header Files">
+      <UniqueIdentifier>{93995380-89BD-4b04-88EB-625FBE52EBFB}</UniqueIdentifier>
+      <Extensions>h;hh;hpp;hxx;hm;inl;inc;xsd</Extensions>
+    </Filter>
+  </ItemGroup>
+  <ItemGroup>
+    <ClCompile Include="..\..\..\test_threads\test_threads.cpp">
+      <Filter>Source Files</Filter>
+    </ClCompile>
+    <ClCompile Include="..\..\..\test_threads\test_threads_main.cpp">
+      <Filter>Source Files</Filter>
+    </ClCompile>
+  </ItemGroup>
+  <ItemGroup>
+    <ClInclude Include="..\..\..\test_threads\test_threads.h">
+      <Filter>Header Files</Filter>
+    </ClInclude>
+  </ItemGroup>
+</Project>
\ No newline at end of file
diff --git a/deps/jemalloc/msvc/test_threads/test_threads.cpp b/deps/jemalloc/msvc/test_threads/test_threads.cpp
new file mode 100644
index 0000000..6eed028
--- /dev/null
+++ b/deps/jemalloc/msvc/test_threads/test_threads.cpp
@@ -0,0 +1,89 @@
+// jemalloc C++ threaded test
+// Author: Rustam Abdullaev
+// Public Domain
+
+#include <atomic>
+#include <functional>
+#include <future>
+#include <random>
+#include <thread>
+#include <vector>
+#include <stdio.h>
+#define JEMALLOC_NO_DEMANGLE
+#include <jemalloc/jemalloc.h>
+
+using std::vector;
+using std::thread;
+using std::uniform_int_distribution;
+using std::minstd_rand;
+
+int test_threads() {
+  je_malloc_conf = "narenas:3";
+  int narenas = 0;
+  size_t sz = sizeof(narenas);
+  je_mallctl("opt.narenas", (void *)&narenas, &sz, NULL, 0);
+  if (narenas != 3) {
+    printf("Error: unexpected number of arenas: %d\n", narenas);
+    return 1;
+  }
+  static const int sizes[] = { 7, 16, 32, 60, 91, 100, 120, 144, 169, 199, 255, 400, 670, 900, 917, 1025, 3333, 5190, 13131, 49192, 99999, 123123, 255265, 2333111 };
+  static const int numSizes = (int)(sizeof(sizes) / sizeof(sizes[0]));
+  vector<thread> workers;
+  static const int numThreads = narenas + 1, numAllocsMax = 25, numIter1 = 50, numIter2 = 50;
+  je_malloc_stats_print(NULL, NULL, NULL);
+  size_t allocated1;
+  size_t sz1 = sizeof(allocated1);
+  je_mallctl("stats.active", (void *)&allocated1, &sz1, NULL, 0);
+  printf("\nPress Enter to start threads...\n");
+  getchar();
+  printf("Starting %d threads x %d x %d iterations...\n", numThreads, numIter1, numIter2);
+  for (int i = 0; i < numThreads; i++) {
+    workers.emplace_back([tid=i]() {
+      uniform_int_distribution<int> sizeDist(0, numSizes - 1);
+      minstd_rand rnd(tid * 17);
+      uint8_t* ptrs[numAllocsMax];
+      int ptrsz[numAllocsMax];
+      for (int i = 0; i < numIter1; ++i) {
+        thread t([&]() {
+          for (int i = 0; i < numIter2; ++i) {
+            const int numAllocs = numAllocsMax - sizeDist(rnd);
+            for (int j = 0; j < numAllocs; j += 64) {
+              const int x = sizeDist(rnd);
+              const int sz = sizes[x];
+              ptrsz[j] = sz;
+              ptrs[j] = (uint8_t*)je_malloc(sz);
+              if (!ptrs[j]) {
+                printf("Unable to allocate %d bytes in thread %d, iter %d, alloc %d. %d\n", sz, tid, i, j, x);
+                exit(1);
+              }
+              for (int k = 0; k < sz; k++)
+                ptrs[j][k] = tid + k;
+            }
+            for (int j = 0; j < numAllocs; j += 64) {
+              for (int k = 0, sz = ptrsz[j]; k < sz; k++)
+                if (ptrs[j][k] != (uint8_t)(tid + k)) {
+                  printf("Memory error in thread %d, iter %d, alloc %d @ %d : %02X!=%02X\n", tid, i, j, k, ptrs[j][k], (uint8_t)(tid + k));
+                  exit(1);
+                }
+              je_free(ptrs[j]);
+            }
+          }
+        });
+        t.join();
+      }
+    });
+  }
+  for (thread& t : workers) {
+    t.join();
+  }
+  je_malloc_stats_print(NULL, NULL, NULL);
+  size_t allocated2;
+  je_mallctl("stats.active", (void *)&allocated2, &sz1, NULL, 0);
+  size_t leaked = allocated2 - allocated1;
+  printf("\nDone. Leaked: %zd bytes\n", leaked);
+  bool failed = leaked > 65536; // in case C++ runtime allocated something (e.g. iostream locale or facet)
+  printf("\nTest %s!\n", (failed ? "FAILED" : "successful"));
+  printf("\nPress Enter to continue...\n");
+  getchar();
+  return failed ? 1 : 0;
+}
diff --git a/deps/jemalloc/msvc/test_threads/test_threads.h b/deps/jemalloc/msvc/test_threads/test_threads.h
new file mode 100644
index 0000000..64d0cdb
--- /dev/null
+++ b/deps/jemalloc/msvc/test_threads/test_threads.h
@@ -0,0 +1,3 @@
+#pragma once
+
+int test_threads();
diff --git a/deps/jemalloc/msvc/test_threads/test_threads_main.cpp b/deps/jemalloc/msvc/test_threads/test_threads_main.cpp
new file mode 100644
index 0000000..0a022fb
--- /dev/null
+++ b/deps/jemalloc/msvc/test_threads/test_threads_main.cpp
@@ -0,0 +1,11 @@
+#include "test_threads.h"
+#include <future>
+#include <functional>
+#include <chrono>
+
+using namespace std::chrono_literals;
+
+int main(int argc, char** argv) {
+  int rc = test_threads();
+  return rc;
+}
diff --git a/deps/jemalloc/run_tests.sh b/deps/jemalloc/run_tests.sh
new file mode 100755
index 0000000..b434f15
--- /dev/null
+++ b/deps/jemalloc/run_tests.sh
@@ -0,0 +1 @@
+$(dirname "$)")/scripts/gen_run_tests.py | bash
diff --git a/deps/jemalloc/scripts/check-formatting.sh b/deps/jemalloc/scripts/check-formatting.sh
new file mode 100755
index 0000000..68cafd8
--- /dev/null
+++ b/deps/jemalloc/scripts/check-formatting.sh
@@ -0,0 +1,28 @@
+#!/bin/bash
+
+# The files that need to be properly formatted.  We'll grow this incrementally
+# until it includes all the jemalloc source files (as we convert things over),
+# and then just replace it with
+#    find -name '*.c' -o -name '*.h' -o -name '*.cpp
+FILES=(
+)
+
+if command -v clang-format &> /dev/null; then
+  CLANG_FORMAT="clang-format"
+elif command -v clang-format-8 &> /dev/null; then
+  CLANG_FORMAT="clang-format-8"
+else
+  echo "Couldn't find clang-format."
+fi
+
+if ! $CLANG_FORMAT -version | grep "version 8\." &> /dev/null; then
+  echo "clang-format is the wrong version."
+  exit 1
+fi
+
+for file in ${FILES[@]}; do
+  if ! cmp --silent $file <($CLANG_FORMAT $file) &> /dev/null; then
+    echo "Error: $file is not clang-formatted"
+    exit 1
+  fi
+done
diff --git a/deps/jemalloc/scripts/freebsd/before_install.sh b/deps/jemalloc/scripts/freebsd/before_install.sh
new file mode 100644
index 0000000..f2bee32
--- /dev/null
+++ b/deps/jemalloc/scripts/freebsd/before_install.sh
@@ -0,0 +1,3 @@
+#!/bin/tcsh
+
+su -m root -c 'pkg install -y git'
diff --git a/deps/jemalloc/scripts/freebsd/before_script.sh b/deps/jemalloc/scripts/freebsd/before_script.sh
new file mode 100644
index 0000000..29406f6
--- /dev/null
+++ b/deps/jemalloc/scripts/freebsd/before_script.sh
@@ -0,0 +1,10 @@
+#!/bin/tcsh
+
+autoconf
+# We don't perfectly track freebsd stdlib.h definitions.  This is fine when
+# we count as a system header, but breaks otherwise, like during these
+# tests.
+./configure --with-jemalloc-prefix=ci_ ${COMPILER_FLAGS:+ CC="$CC $COMPILER_FLAGS" CXX="$CXX $COMPILER_FLAGS"} $CONFIGURE_FLAGS
+JE_NCPUS=`sysctl -n kern.smp.cpus`
+gmake -j${JE_NCPUS}
+gmake -j${JE_NCPUS} tests
diff --git a/deps/jemalloc/scripts/freebsd/script.sh b/deps/jemalloc/scripts/freebsd/script.sh
new file mode 100644
index 0000000..d9c53a2
--- /dev/null
+++ b/deps/jemalloc/scripts/freebsd/script.sh
@@ -0,0 +1,3 @@
+#!/bin/tcsh
+
+gmake check
diff --git a/deps/jemalloc/scripts/gen_run_tests.py b/deps/jemalloc/scripts/gen_run_tests.py
new file mode 100755
index 0000000..7c3075f
--- /dev/null
+++ b/deps/jemalloc/scripts/gen_run_tests.py
@@ -0,0 +1,130 @@
+#!/usr/bin/env python3
+
+import sys
+from itertools import combinations
+from os import uname
+from multiprocessing import cpu_count
+from subprocess import call
+
+# Later, we want to test extended vaddr support.  Apparently, the "real" way of
+# checking this is flaky on OS X.
+bits_64 = sys.maxsize > 2**32
+
+nparallel = cpu_count() * 2
+
+uname = uname()[0]
+
+if call("command -v gmake", shell=True) == 0:
+    make_cmd = 'gmake'
+else:
+    make_cmd = 'make'
+
+def powerset(items):
+    result = []
+    for i in range(len(items) + 1):
+        result += combinations(items, i)
+    return result
+
+possible_compilers = []
+for cc, cxx in (['gcc', 'g++'], ['clang', 'clang++']):
+    try:
+        cmd_ret = call([cc, "-v"])
+        if cmd_ret == 0:
+            possible_compilers.append((cc, cxx))
+    except:
+        pass
+possible_compiler_opts = [
+    '-m32',
+]
+possible_config_opts = [
+    '--enable-debug',
+    '--enable-prof',
+    '--disable-stats',
+    '--enable-opt-safety-checks',
+    '--with-lg-page=16',
+]
+if bits_64:
+    possible_config_opts.append('--with-lg-vaddr=56')
+
+possible_malloc_conf_opts = [
+    'tcache:false',
+    'dss:primary',
+    'percpu_arena:percpu',
+    'background_thread:true',
+]
+
+print('set -e')
+print('if [ -f Makefile ] ; then %(make_cmd)s relclean ; fi' % {'make_cmd':
+    make_cmd})
+print('autoconf')
+print('rm -rf run_tests.out')
+print('mkdir run_tests.out')
+print('cd run_tests.out')
+
+ind = 0
+for cc, cxx in possible_compilers:
+    for compiler_opts in powerset(possible_compiler_opts):
+        for config_opts in powerset(possible_config_opts):
+            for malloc_conf_opts in powerset(possible_malloc_conf_opts):
+                if cc == 'clang' \
+                  and '-m32' in possible_compiler_opts \
+                  and '--enable-prof' in config_opts:
+                    continue
+                config_line = (
+                    'EXTRA_CFLAGS=-Werror EXTRA_CXXFLAGS=-Werror '
+                    + 'CC="{} {}" '.format(cc, " ".join(compiler_opts))
+                    + 'CXX="{} {}" '.format(cxx, " ".join(compiler_opts))
+                    + '../../configure '
+                    + " ".join(config_opts) + (' --with-malloc-conf=' +
+                    ",".join(malloc_conf_opts) if len(malloc_conf_opts) > 0
+                    else '')
+                )
+
+                # We don't want to test large vaddr spaces in 32-bit mode.
+                if ('-m32' in compiler_opts and '--with-lg-vaddr=56' in
+                    config_opts):
+                    continue
+
+                # Per CPU arenas are only supported on Linux.
+                linux_supported = ('percpu_arena:percpu' in malloc_conf_opts \
+                  or 'background_thread:true' in malloc_conf_opts)
+                # Heap profiling and dss are not supported on OS X.
+                darwin_unsupported = ('--enable-prof' in config_opts or \
+                  'dss:primary' in malloc_conf_opts)
+                if (uname == 'Linux' and linux_supported) \
+                  or (not linux_supported and (uname != 'Darwin' or \
+                  not darwin_unsupported)):
+                    print("""cat <<EOF > run_test_%(ind)d.sh
+#!/bin/sh
+
+set -e
+
+abort() {
+    echo "==> Error" >> run_test.log
+    echo "Error; see run_tests.out/run_test_%(ind)d.out/run_test.log"
+    exit 255 # Special exit code tells xargs to terminate.
+}
+
+# Environment variables are not supported.
+run_cmd() {
+    echo "==> \$@" >> run_test.log
+    \$@ >> run_test.log 2>&1 || abort
+}
+
+echo "=> run_test_%(ind)d: %(config_line)s"
+mkdir run_test_%(ind)d.out
+cd run_test_%(ind)d.out
+
+echo "==> %(config_line)s" >> run_test.log
+%(config_line)s >> run_test.log 2>&1 || abort
+
+run_cmd %(make_cmd)s all tests
+run_cmd %(make_cmd)s check
+run_cmd %(make_cmd)s distclean
+EOF
+chmod 755 run_test_%(ind)d.sh""" % {'ind': ind, 'config_line': config_line,
+      'make_cmd': make_cmd})
+                    ind += 1
+
+print('for i in `seq 0 %(last_ind)d` ; do echo run_test_${i}.sh ; done | xargs'
+    ' -P %(nparallel)d -n 1 sh' % {'last_ind': ind-1, 'nparallel': nparallel})
diff --git a/deps/jemalloc/scripts/gen_travis.py b/deps/jemalloc/scripts/gen_travis.py
new file mode 100755
index 0000000..4366a06
--- /dev/null
+++ b/deps/jemalloc/scripts/gen_travis.py
@@ -0,0 +1,327 @@
+#!/usr/bin/env python3
+
+from itertools import combinations, chain
+from enum import Enum, auto
+
+
+LINUX = 'linux'
+OSX = 'osx'
+WINDOWS = 'windows'
+FREEBSD = 'freebsd'
+
+
+AMD64 = 'amd64'
+ARM64 = 'arm64'
+PPC64LE = 'ppc64le'
+
+
+TRAVIS_TEMPLATE = """\
+# This config file is generated by ./scripts/gen_travis.py.
+# Do not edit by hand.
+
+# We use 'minimal', because 'generic' makes Windows VMs hang at startup. Also
+# the software provided by 'generic' is simply not needed for our tests.
+# Differences are explained here:
+# https://docs.travis-ci.com/user/languages/minimal-and-generic/
+language: minimal
+dist: focal
+
+jobs:
+  include:
+{jobs}
+
+before_install:
+  - |-
+    if test -f "./scripts/$TRAVIS_OS_NAME/before_install.sh"; then
+      source ./scripts/$TRAVIS_OS_NAME/before_install.sh
+    fi
+
+before_script:
+  - |-
+    if test -f "./scripts/$TRAVIS_OS_NAME/before_script.sh"; then
+      source ./scripts/$TRAVIS_OS_NAME/before_script.sh
+    else
+      scripts/gen_travis.py > travis_script && diff .travis.yml travis_script
+      autoconf
+      # If COMPILER_FLAGS are not empty, add them to CC and CXX
+      ./configure ${{COMPILER_FLAGS:+ CC="$CC $COMPILER_FLAGS" \
+CXX="$CXX $COMPILER_FLAGS"}} $CONFIGURE_FLAGS
+      make -j3
+      make -j3 tests
+    fi
+
+script:
+  - |-
+    if test -f "./scripts/$TRAVIS_OS_NAME/script.sh"; then
+      source ./scripts/$TRAVIS_OS_NAME/script.sh
+    else
+      make check
+    fi
+"""
+
+
+class Option(object):
+    class Type:
+        COMPILER = auto()
+        COMPILER_FLAG = auto()
+        CONFIGURE_FLAG = auto()
+        MALLOC_CONF = auto()
+        FEATURE = auto()
+
+    def __init__(self, type, value):
+        self.type = type
+        self.value = value
+
+    @staticmethod
+    def as_compiler(value):
+        return Option(Option.Type.COMPILER, value)
+
+    @staticmethod
+    def as_compiler_flag(value):
+        return Option(Option.Type.COMPILER_FLAG, value)
+
+    @staticmethod
+    def as_configure_flag(value):
+        return Option(Option.Type.CONFIGURE_FLAG, value)
+
+    @staticmethod
+    def as_malloc_conf(value):
+        return Option(Option.Type.MALLOC_CONF, value)
+
+    @staticmethod
+    def as_feature(value):
+        return Option(Option.Type.FEATURE, value)
+
+    def __eq__(self, obj):
+        return (isinstance(obj, Option) and obj.type == self.type
+                and obj.value == self.value)
+
+
+# The 'default' configuration is gcc, on linux, with no compiler or configure
+# flags.  We also test with clang, -m32, --enable-debug, --enable-prof,
+# --disable-stats, and --with-malloc-conf=tcache:false.  To avoid abusing
+# travis though, we don't test all 2**7 = 128 possible combinations of these;
+# instead, we only test combinations of up to 2 'unusual' settings, under the
+# hope that bugs involving interactions of such settings are rare.
+MAX_UNUSUAL_OPTIONS = 2
+
+
+GCC = Option.as_compiler('CC=gcc CXX=g++')
+CLANG = Option.as_compiler('CC=clang CXX=clang++')
+CL = Option.as_compiler('CC=cl.exe CXX=cl.exe')
+
+
+compilers_unusual = [CLANG,]
+
+
+CROSS_COMPILE_32BIT = Option.as_feature('CROSS_COMPILE_32BIT')
+feature_unusuals = [CROSS_COMPILE_32BIT]
+
+
+configure_flag_unusuals = [Option.as_configure_flag(opt) for opt in (
+    '--enable-debug',
+    '--enable-prof',
+    '--disable-stats',
+    '--disable-libdl',
+    '--enable-opt-safety-checks',
+    '--with-lg-page=16',
+)]
+
+
+malloc_conf_unusuals = [Option.as_malloc_conf(opt) for opt in (
+    'tcache:false',
+    'dss:primary',
+    'percpu_arena:percpu',
+    'background_thread:true',
+)]
+
+
+all_unusuals = (compilers_unusual + feature_unusuals
+    + configure_flag_unusuals + malloc_conf_unusuals)
+
+
+def get_extra_cflags(os, compiler):
+    if os == FREEBSD:
+        return []
+
+    if os == WINDOWS:
+        # For non-CL compilers under Windows (for now it's only MinGW-GCC),
+        # -fcommon needs to be specified to correctly handle multiple
+        # 'malloc_conf' symbols and such, which are declared weak under Linux.
+        # Weak symbols don't work with MinGW-GCC.
+        if compiler != CL.value:
+            return ['-fcommon']
+        else:
+            return []
+
+    # We get some spurious errors when -Warray-bounds is enabled.
+    extra_cflags = ['-Werror', '-Wno-array-bounds']
+    if compiler == CLANG.value or os == OSX:
+        extra_cflags += [
+            '-Wno-unknown-warning-option',
+            '-Wno-ignored-attributes'
+        ]
+    if os == OSX:
+        extra_cflags += [
+            '-Wno-deprecated-declarations',
+        ]
+    return extra_cflags
+
+
+# Formats a job from a combination of flags
+def format_job(os, arch, combination):
+    compilers = [x.value for x in combination if x.type == Option.Type.COMPILER]
+    assert(len(compilers) <= 1)
+    compiler_flags = [x.value for x in combination if x.type == Option.Type.COMPILER_FLAG]
+    configure_flags = [x.value for x in combination if x.type == Option.Type.CONFIGURE_FLAG]
+    malloc_conf = [x.value for x in combination if x.type == Option.Type.MALLOC_CONF]
+    features = [x.value for x in combination if x.type == Option.Type.FEATURE]
+
+    if len(malloc_conf) > 0:
+        configure_flags.append('--with-malloc-conf=' + ','.join(malloc_conf))
+
+    if not compilers:
+        compiler = GCC.value
+    else:
+        compiler = compilers[0]
+
+    extra_environment_vars = ''
+    cross_compile = CROSS_COMPILE_32BIT.value in features
+    if os == LINUX and cross_compile:
+        compiler_flags.append('-m32')
+
+    features_str = ' '.join([' {}=yes'.format(feature) for feature in features])
+
+    stringify = lambda arr, name: ' {}="{}"'.format(name, ' '.join(arr)) if arr else ''
+    env_string = '{}{}{}{}{}{}'.format(
+            compiler,
+            features_str,
+            stringify(compiler_flags, 'COMPILER_FLAGS'),
+            stringify(configure_flags, 'CONFIGURE_FLAGS'),
+            stringify(get_extra_cflags(os, compiler), 'EXTRA_CFLAGS'),
+            extra_environment_vars)
+
+    job = '    - os: {}\n'.format(os)
+    job += '      arch: {}\n'.format(arch)
+    job += '      env: {}'.format(env_string)
+    return job
+
+
+def generate_unusual_combinations(unusuals, max_unusual_opts):
+    """
+    Generates different combinations of non-standard compilers, compiler flags,
+    configure flags and malloc_conf settings.
+
+    @param max_unusual_opts: Limit of unusual options per combination.
+    """
+    return chain.from_iterable(
+            [combinations(unusuals, i) for i in range(max_unusual_opts + 1)])
+
+
+def included(combination, exclude):
+    """
+    Checks if the combination of options should be included in the Travis
+    testing matrix.
+
+    @param exclude: A list of options to be avoided.
+    """
+    return not any(excluded in combination for excluded in exclude)
+
+
+def generate_jobs(os, arch, exclude, max_unusual_opts, unusuals=all_unusuals):
+    jobs = []
+    for combination in generate_unusual_combinations(unusuals, max_unusual_opts):
+        if included(combination, exclude):
+            jobs.append(format_job(os, arch, combination))
+    return '\n'.join(jobs)
+
+
+def generate_linux(arch):
+    os = LINUX
+
+    # Only generate 2 unusual options for AMD64 to reduce matrix size
+    max_unusual_opts = MAX_UNUSUAL_OPTIONS if arch == AMD64 else 1
+
+    exclude = []
+    if arch == PPC64LE:
+        # Avoid 32 bit builds and clang on PowerPC
+        exclude = (CROSS_COMPILE_32BIT, CLANG,)
+
+    return generate_jobs(os, arch, exclude, max_unusual_opts)
+
+
+def generate_macos(arch):
+    os = OSX
+
+    max_unusual_opts = 1
+
+    exclude = ([Option.as_malloc_conf(opt) for opt in (
+            'dss:primary',
+            'percpu_arena:percpu',
+            'background_thread:true')] +
+        [Option.as_configure_flag('--enable-prof')] +
+        [CLANG,])
+
+    return generate_jobs(os, arch, exclude, max_unusual_opts)
+
+
+def generate_windows(arch):
+    os = WINDOWS
+
+    max_unusual_opts = 3
+    unusuals = (
+        Option.as_configure_flag('--enable-debug'),
+        CL,
+        CROSS_COMPILE_32BIT,
+    )
+    return generate_jobs(os, arch, (), max_unusual_opts, unusuals)
+
+
+def generate_freebsd(arch):
+    os = FREEBSD
+
+    max_unusual_opts = 4
+    unusuals = (
+        Option.as_configure_flag('--enable-debug'),
+        Option.as_configure_flag('--enable-prof --enable-prof-libunwind'),
+        Option.as_configure_flag('--with-lg-page=16 --with-malloc-conf=tcache:false'),
+        CROSS_COMPILE_32BIT,
+    )
+    return generate_jobs(os, arch, (), max_unusual_opts, unusuals)
+
+
+
+def get_manual_jobs():
+    return """\
+    # Development build
+    - os: linux
+      env: CC=gcc CXX=g++ CONFIGURE_FLAGS="--enable-debug \
+--disable-cache-oblivious --enable-stats --enable-log --enable-prof" \
+EXTRA_CFLAGS="-Werror -Wno-array-bounds"
+    # --enable-expermental-smallocx:
+    - os: linux
+      env: CC=gcc CXX=g++ CONFIGURE_FLAGS="--enable-debug \
+--enable-experimental-smallocx --enable-stats --enable-prof" \
+EXTRA_CFLAGS="-Werror -Wno-array-bounds"
+"""
+
+
+def main():
+    jobs = '\n'.join((
+        generate_windows(AMD64),
+
+        generate_freebsd(AMD64),
+
+        generate_linux(AMD64),
+        generate_linux(PPC64LE),
+
+        generate_macos(AMD64),
+
+        get_manual_jobs(),
+    ))
+
+    print(TRAVIS_TEMPLATE.format(jobs=jobs))
+
+
+if __name__ == '__main__':
+    main()
diff --git a/deps/jemalloc/scripts/linux/before_install.sh b/deps/jemalloc/scripts/linux/before_install.sh
new file mode 100644
index 0000000..6741746
--- /dev/null
+++ b/deps/jemalloc/scripts/linux/before_install.sh
@@ -0,0 +1,13 @@
+#!/bin/bash
+
+set -ev
+
+if [[ "$TRAVIS_OS_NAME" != "linux" ]]; then
+    echo "Incorrect \$TRAVIS_OS_NAME: expected linux, got $TRAVIS_OS_NAME"
+    exit 1
+fi
+
+if [[ "$CROSS_COMPILE_32BIT" == "yes" ]]; then
+    sudo apt-get update
+    sudo apt-get -y install gcc-multilib g++-multilib
+fi
diff --git a/deps/jemalloc/scripts/windows/before_install.sh b/deps/jemalloc/scripts/windows/before_install.sh
new file mode 100644
index 0000000..2740c45
--- /dev/null
+++ b/deps/jemalloc/scripts/windows/before_install.sh
@@ -0,0 +1,83 @@
+#!/bin/bash
+
+set -e
+
+# The purpose of this script is to install build dependencies and set
+# $build_env to a function that sets appropriate environment variables,
+# to enable (mingw32|mingw64) environment if we want to compile with gcc, or
+# (mingw32|mingw64) + vcvarsall.bat if we want to compile with cl.exe
+
+if [[ "$TRAVIS_OS_NAME" != "windows" ]]; then
+    echo "Incorrect \$TRAVIS_OS_NAME: expected windows, got $TRAVIS_OS_NAME"
+    exit 1
+fi
+
+[[ ! -f C:/tools/msys64/msys2_shell.cmd ]] && rm -rf C:/tools/msys64
+choco uninstall -y mingw
+choco upgrade --no-progress -y msys2
+
+msys_shell_cmd="cmd //C RefreshEnv.cmd && set MSYS=winsymlinks:nativestrict && C:\\tools\\msys64\\msys2_shell.cmd"
+
+msys2() { $msys_shell_cmd -defterm -no-start -msys2 -c "$*"; }
+mingw32() { $msys_shell_cmd -defterm -no-start -mingw32 -c "$*"; }
+mingw64() { $msys_shell_cmd -defterm -no-start -mingw64 -c "$*"; }
+
+if [[ "$CROSS_COMPILE_32BIT" == "yes" ]]; then
+    mingw=mingw32
+    mingw_gcc_package_arch=i686
+else
+    mingw=mingw64
+    mingw_gcc_package_arch=x86_64
+fi
+
+if [[ "$CC" == *"gcc"* ]]; then
+    $mingw pacman -S --noconfirm --needed \
+        autotools \
+        git \
+        mingw-w64-${mingw_gcc_package_arch}-make \
+	    mingw-w64-${mingw_gcc_package_arch}-gcc \
+	    mingw-w64-${mingw_gcc_package_arch}-binutils
+    build_env=$mingw
+elif [[ "$CC" == *"cl"* ]]; then
+    $mingw pacman -S --noconfirm --needed \
+        autotools \
+	    git \
+	    mingw-w64-${mingw_gcc_package_arch}-make \
+	    mingw-w64-${mingw_gcc_package_arch}-binutils
+
+    # In order to use MSVC compiler (cl.exe), we need to correctly set some environment
+    # variables, namely PATH, INCLUDE, LIB and LIBPATH. The correct values of these
+    # variables are set by a batch script "vcvarsall.bat". The code below generates
+    # a batch script that calls "vcvarsall.bat" and prints the environment variables.
+    #
+    # Then, those environment variables are transformed from cmd to bash format and put
+    # into a script $apply_vsenv. If cl.exe needs to be used from bash, one can
+    # 'source $apply_vsenv' and it will apply the environment variables needed for cl.exe
+    # to be located and function correctly.
+    #
+    # At last, a function "mingw_with_msvc_vars" is generated which forwards user input
+    # into a correct mingw (32 or 64) subshell that automatically performs 'source $apply_vsenv',
+    # making it possible for autotools to discover and use cl.exe.
+    vcvarsall="vcvarsall.tmp.bat"
+    echo "@echo off" > $vcvarsall
+    echo "call \"c:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\\\vcvarsall.bat\" $USE_MSVC" >> $vcvarsall
+    echo "set" >> $vcvarsall
+
+    apply_vsenv="./apply_vsenv.sh"
+    cmd //C $vcvarsall | grep -E "^PATH=" | sed -n -e 's/\(.*\)=\(.*\)/export \1=$PATH:"\2"/g' \
+        -e 's/\([a-zA-Z]\):[\\\/]/\/\1\//g' \
+        -e 's/\\/\//g' \
+        -e 's/;\//:\//gp' > $apply_vsenv
+    cmd //C $vcvarsall | grep -E "^(INCLUDE|LIB|LIBPATH)=" | sed -n -e 's/\(.*\)=\(.*\)/export \1="\2"/gp' >> $apply_vsenv
+
+    cat $apply_vsenv
+    mingw_with_msvc_vars() { $msys_shell_cmd -defterm -no-start -$mingw -c "source $apply_vsenv && ""$*"; }
+    build_env=mingw_with_msvc_vars
+
+    rm -f $vcvarsall
+else
+    echo "Unknown C compiler: $CC"
+    exit 1
+fi
+
+echo "Build environment function: $build_env"
diff --git a/deps/jemalloc/scripts/windows/before_script.sh b/deps/jemalloc/scripts/windows/before_script.sh
new file mode 100644
index 0000000..9d30aba
--- /dev/null
+++ b/deps/jemalloc/scripts/windows/before_script.sh
@@ -0,0 +1,20 @@
+#!/bin/bash
+
+set -e
+
+if [[ "$TRAVIS_OS_NAME" != "windows" ]]; then
+    echo "Incorrect \$TRAVIS_OS_NAME: expected windows, got $TRAVIS_OS_NAME"
+    exit 1
+fi
+
+$build_env autoconf
+$build_env ./configure $CONFIGURE_FLAGS
+# mingw32-make simply means "make", unrelated to mingw32 vs mingw64.
+# Simply disregard the prefix and treat is as "make".
+$build_env mingw32-make -j3
+# At the moment, it's impossible to make tests in parallel,
+# seemingly due to concurrent writes to '.pdb' file. I don't know why
+# that happens, because we explicitly supply '/Fs' to the compiler.
+# Until we figure out how to fix it, we should build tests sequentially
+# on Windows.
+$build_env mingw32-make tests
diff --git a/deps/jemalloc/scripts/windows/script.sh b/deps/jemalloc/scripts/windows/script.sh
new file mode 100644
index 0000000..3a27f70
--- /dev/null
+++ b/deps/jemalloc/scripts/windows/script.sh
@@ -0,0 +1,10 @@
+#!/bin/bash
+
+set -e
+
+if [[ "$TRAVIS_OS_NAME" != "windows" ]]; then
+    echo "Incorrect \$TRAVIS_OS_NAME: expected windows, got $TRAVIS_OS_NAME"
+    exit 1
+fi
+
+$build_env mingw32-make -k check
diff --git a/deps/jemalloc/src/arena.c b/deps/jemalloc/src/arena.c
new file mode 100644
index 0000000..857b27c
--- /dev/null
+++ b/deps/jemalloc/src/arena.c
@@ -0,0 +1,1891 @@
+#include "jemalloc/internal/jemalloc_preamble.h"
+#include "jemalloc/internal/jemalloc_internal_includes.h"
+
+#include "jemalloc/internal/assert.h"
+#include "jemalloc/internal/decay.h"
+#include "jemalloc/internal/ehooks.h"
+#include "jemalloc/internal/extent_dss.h"
+#include "jemalloc/internal/extent_mmap.h"
+#include "jemalloc/internal/san.h"
+#include "jemalloc/internal/mutex.h"
+#include "jemalloc/internal/rtree.h"
+#include "jemalloc/internal/safety_check.h"
+#include "jemalloc/internal/util.h"
+
+JEMALLOC_DIAGNOSTIC_DISABLE_SPURIOUS
+
+/******************************************************************************/
+/* Data. */
+
+/*
+ * Define names for both unininitialized and initialized phases, so that
+ * options and mallctl processing are straightforward.
+ */
+const char *percpu_arena_mode_names[] = {
+	"percpu",
+	"phycpu",
+	"disabled",
+	"percpu",
+	"phycpu"
+};
+percpu_arena_mode_t opt_percpu_arena = PERCPU_ARENA_DEFAULT;
+
+ssize_t opt_dirty_decay_ms = DIRTY_DECAY_MS_DEFAULT;
+ssize_t opt_muzzy_decay_ms = MUZZY_DECAY_MS_DEFAULT;
+
+static atomic_zd_t dirty_decay_ms_default;
+static atomic_zd_t muzzy_decay_ms_default;
+
+emap_t arena_emap_global;
+pa_central_t arena_pa_central_global;
+
+div_info_t arena_binind_div_info[SC_NBINS];
+
+size_t opt_oversize_threshold = OVERSIZE_THRESHOLD_DEFAULT;
+size_t oversize_threshold = OVERSIZE_THRESHOLD_DEFAULT;
+
+uint32_t arena_bin_offsets[SC_NBINS];
+static unsigned nbins_total;
+
+static unsigned huge_arena_ind;
+
+const arena_config_t arena_config_default = {
+	/* .extent_hooks = */ (extent_hooks_t *)&ehooks_default_extent_hooks,
+	/* .metadata_use_hooks = */ true,
+};
+
+/******************************************************************************/
+/*
+ * Function prototypes for static functions that are referenced prior to
+ * definition.
+ */
+
+static bool arena_decay_dirty(tsdn_t *tsdn, arena_t *arena,
+    bool is_background_thread, bool all);
+static void arena_bin_lower_slab(tsdn_t *tsdn, arena_t *arena, edata_t *slab,
+    bin_t *bin);
+static void
+arena_maybe_do_deferred_work(tsdn_t *tsdn, arena_t *arena, decay_t *decay,
+    size_t npages_new);
+
+/******************************************************************************/
+
+void
+arena_basic_stats_merge(tsdn_t *tsdn, arena_t *arena, unsigned *nthreads,
+    const char **dss, ssize_t *dirty_decay_ms, ssize_t *muzzy_decay_ms,
+    size_t *nactive, size_t *ndirty, size_t *nmuzzy) {
+	*nthreads += arena_nthreads_get(arena, false);
+	*dss = dss_prec_names[arena_dss_prec_get(arena)];
+	*dirty_decay_ms = arena_decay_ms_get(arena, extent_state_dirty);
+	*muzzy_decay_ms = arena_decay_ms_get(arena, extent_state_muzzy);
+	pa_shard_basic_stats_merge(&arena->pa_shard, nactive, ndirty, nmuzzy);
+}
+
+void
+arena_stats_merge(tsdn_t *tsdn, arena_t *arena, unsigned *nthreads,
+    const char **dss, ssize_t *dirty_decay_ms, ssize_t *muzzy_decay_ms,
+    size_t *nactive, size_t *ndirty, size_t *nmuzzy, arena_stats_t *astats,
+    bin_stats_data_t *bstats, arena_stats_large_t *lstats,
+    pac_estats_t *estats, hpa_shard_stats_t *hpastats, sec_stats_t *secstats) {
+	cassert(config_stats);
+
+	arena_basic_stats_merge(tsdn, arena, nthreads, dss, dirty_decay_ms,
+	    muzzy_decay_ms, nactive, ndirty, nmuzzy);
+
+	size_t base_allocated, base_resident, base_mapped, metadata_thp;
+	base_stats_get(tsdn, arena->base, &base_allocated, &base_resident,
+	    &base_mapped, &metadata_thp);
+	size_t pac_mapped_sz = pac_mapped(&arena->pa_shard.pac);
+	astats->mapped += base_mapped + pac_mapped_sz;
+	astats->resident += base_resident;
+
+	LOCKEDINT_MTX_LOCK(tsdn, arena->stats.mtx);
+
+	astats->base += base_allocated;
+	atomic_load_add_store_zu(&astats->internal, arena_internal_get(arena));
+	astats->metadata_thp += metadata_thp;
+
+	for (szind_t i = 0; i < SC_NSIZES - SC_NBINS; i++) {
+		uint64_t nmalloc = locked_read_u64(tsdn,
+		    LOCKEDINT_MTX(arena->stats.mtx),
+		    &arena->stats.lstats[i].nmalloc);
+		locked_inc_u64_unsynchronized(&lstats[i].nmalloc, nmalloc);
+		astats->nmalloc_large += nmalloc;
+
+		uint64_t ndalloc = locked_read_u64(tsdn,
+		    LOCKEDINT_MTX(arena->stats.mtx),
+		    &arena->stats.lstats[i].ndalloc);
+		locked_inc_u64_unsynchronized(&lstats[i].ndalloc, ndalloc);
+		astats->ndalloc_large += ndalloc;
+
+		uint64_t nrequests = locked_read_u64(tsdn,
+		    LOCKEDINT_MTX(arena->stats.mtx),
+		    &arena->stats.lstats[i].nrequests);
+		locked_inc_u64_unsynchronized(&lstats[i].nrequests,
+		    nmalloc + nrequests);
+		astats->nrequests_large += nmalloc + nrequests;
+
+		/* nfill == nmalloc for large currently. */
+		locked_inc_u64_unsynchronized(&lstats[i].nfills, nmalloc);
+		astats->nfills_large += nmalloc;
+
+		uint64_t nflush = locked_read_u64(tsdn,
+		    LOCKEDINT_MTX(arena->stats.mtx),
+		    &arena->stats.lstats[i].nflushes);
+		locked_inc_u64_unsynchronized(&lstats[i].nflushes, nflush);
+		astats->nflushes_large += nflush;
+
+		assert(nmalloc >= ndalloc);
+		assert(nmalloc - ndalloc <= SIZE_T_MAX);
+		size_t curlextents = (size_t)(nmalloc - ndalloc);
+		lstats[i].curlextents += curlextents;
+		astats->allocated_large +=
+		    curlextents * sz_index2size(SC_NBINS + i);
+	}
+
+	pa_shard_stats_merge(tsdn, &arena->pa_shard, &astats->pa_shard_stats,
+	    estats, hpastats, secstats, &astats->resident);
+
+	LOCKEDINT_MTX_UNLOCK(tsdn, arena->stats.mtx);
+
+	/* Currently cached bytes and sanitizer-stashed bytes in tcache. */
+	astats->tcache_bytes = 0;
+	astats->tcache_stashed_bytes = 0;
+	malloc_mutex_lock(tsdn, &arena->tcache_ql_mtx);
+	cache_bin_array_descriptor_t *descriptor;
+	ql_foreach(descriptor, &arena->cache_bin_array_descriptor_ql, link) {
+		for (szind_t i = 0; i < nhbins; i++) {
+			cache_bin_t *cache_bin = &descriptor->bins[i];
+			cache_bin_sz_t ncached, nstashed;
+			cache_bin_nitems_get_remote(cache_bin,
+			    &tcache_bin_info[i], &ncached, &nstashed);
+
+			astats->tcache_bytes += ncached * sz_index2size(i);
+			astats->tcache_stashed_bytes += nstashed *
+			    sz_index2size(i);
+		}
+	}
+	malloc_mutex_prof_read(tsdn,
+	    &astats->mutex_prof_data[arena_prof_mutex_tcache_list],
+	    &arena->tcache_ql_mtx);
+	malloc_mutex_unlock(tsdn, &arena->tcache_ql_mtx);
+
+#define READ_ARENA_MUTEX_PROF_DATA(mtx, ind)				\
+    malloc_mutex_lock(tsdn, &arena->mtx);				\
+    malloc_mutex_prof_read(tsdn, &astats->mutex_prof_data[ind],		\
+        &arena->mtx);							\
+    malloc_mutex_unlock(tsdn, &arena->mtx);
+
+	/* Gather per arena mutex profiling data. */
+	READ_ARENA_MUTEX_PROF_DATA(large_mtx, arena_prof_mutex_large);
+	READ_ARENA_MUTEX_PROF_DATA(base->mtx,
+	    arena_prof_mutex_base);
+#undef READ_ARENA_MUTEX_PROF_DATA
+	pa_shard_mtx_stats_read(tsdn, &arena->pa_shard,
+	    astats->mutex_prof_data);
+
+	nstime_copy(&astats->uptime, &arena->create_time);
+	nstime_update(&astats->uptime);
+	nstime_subtract(&astats->uptime, &arena->create_time);
+
+	for (szind_t i = 0; i < SC_NBINS; i++) {
+		for (unsigned j = 0; j < bin_infos[i].n_shards; j++) {
+			bin_stats_merge(tsdn, &bstats[i],
+			    arena_get_bin(arena, i, j));
+		}
+	}
+}
+
+static void
+arena_background_thread_inactivity_check(tsdn_t *tsdn, arena_t *arena,
+    bool is_background_thread) {
+	if (!background_thread_enabled() || is_background_thread) {
+		return;
+	}
+	background_thread_info_t *info =
+	    arena_background_thread_info_get(arena);
+	if (background_thread_indefinite_sleep(info)) {
+		arena_maybe_do_deferred_work(tsdn, arena,
+		    &arena->pa_shard.pac.decay_dirty, 0);
+	}
+}
+
+/*
+ * React to deferred work generated by a PAI function.
+ */
+void arena_handle_deferred_work(tsdn_t *tsdn, arena_t *arena) {
+	witness_assert_depth_to_rank(tsdn_witness_tsdp_get(tsdn),
+	    WITNESS_RANK_CORE, 0);
+
+	if (decay_immediately(&arena->pa_shard.pac.decay_dirty)) {
+		arena_decay_dirty(tsdn, arena, false, true);
+	}
+	arena_background_thread_inactivity_check(tsdn, arena, false);
+}
+
+static void *
+arena_slab_reg_alloc(edata_t *slab, const bin_info_t *bin_info) {
+	void *ret;
+	slab_data_t *slab_data = edata_slab_data_get(slab);
+	size_t regind;
+
+	assert(edata_nfree_get(slab) > 0);
+	assert(!bitmap_full(slab_data->bitmap, &bin_info->bitmap_info));
+
+	regind = bitmap_sfu(slab_data->bitmap, &bin_info->bitmap_info);
+	ret = (void *)((uintptr_t)edata_addr_get(slab) +
+	    (uintptr_t)(bin_info->reg_size * regind));
+	edata_nfree_dec(slab);
+	return ret;
+}
+
+static void
+arena_slab_reg_alloc_batch(edata_t *slab, const bin_info_t *bin_info,
+			   unsigned cnt, void** ptrs) {
+	slab_data_t *slab_data = edata_slab_data_get(slab);
+
+	assert(edata_nfree_get(slab) >= cnt);
+	assert(!bitmap_full(slab_data->bitmap, &bin_info->bitmap_info));
+
+#if (! defined JEMALLOC_INTERNAL_POPCOUNTL) || (defined BITMAP_USE_TREE)
+	for (unsigned i = 0; i < cnt; i++) {
+		size_t regind = bitmap_sfu(slab_data->bitmap,
+					   &bin_info->bitmap_info);
+		*(ptrs + i) = (void *)((uintptr_t)edata_addr_get(slab) +
+		    (uintptr_t)(bin_info->reg_size * regind));
+	}
+#else
+	unsigned group = 0;
+	bitmap_t g = slab_data->bitmap[group];
+	unsigned i = 0;
+	while (i < cnt) {
+		while (g == 0) {
+			g = slab_data->bitmap[++group];
+		}
+		size_t shift = group << LG_BITMAP_GROUP_NBITS;
+		size_t pop = popcount_lu(g);
+		if (pop > (cnt - i)) {
+			pop = cnt - i;
+		}
+
+		/*
+		 * Load from memory locations only once, outside the
+		 * hot loop below.
+		 */
+		uintptr_t base = (uintptr_t)edata_addr_get(slab);
+		uintptr_t regsize = (uintptr_t)bin_info->reg_size;
+		while (pop--) {
+			size_t bit = cfs_lu(&g);
+			size_t regind = shift + bit;
+			*(ptrs + i) = (void *)(base + regsize * regind);
+
+			i++;
+		}
+		slab_data->bitmap[group] = g;
+	}
+#endif
+	edata_nfree_sub(slab, cnt);
+}
+
+static void
+arena_large_malloc_stats_update(tsdn_t *tsdn, arena_t *arena, size_t usize) {
+	szind_t index, hindex;
+
+	cassert(config_stats);
+
+	if (usize < SC_LARGE_MINCLASS) {
+		usize = SC_LARGE_MINCLASS;
+	}
+	index = sz_size2index(usize);
+	hindex = (index >= SC_NBINS) ? index - SC_NBINS : 0;
+
+	locked_inc_u64(tsdn, LOCKEDINT_MTX(arena->stats.mtx),
+	    &arena->stats.lstats[hindex].nmalloc, 1);
+}
+
+static void
+arena_large_dalloc_stats_update(tsdn_t *tsdn, arena_t *arena, size_t usize) {
+	szind_t index, hindex;
+
+	cassert(config_stats);
+
+	if (usize < SC_LARGE_MINCLASS) {
+		usize = SC_LARGE_MINCLASS;
+	}
+	index = sz_size2index(usize);
+	hindex = (index >= SC_NBINS) ? index - SC_NBINS : 0;
+
+	locked_inc_u64(tsdn, LOCKEDINT_MTX(arena->stats.mtx),
+	    &arena->stats.lstats[hindex].ndalloc, 1);
+}
+
+static void
+arena_large_ralloc_stats_update(tsdn_t *tsdn, arena_t *arena, size_t oldusize,
+    size_t usize) {
+	arena_large_malloc_stats_update(tsdn, arena, usize);
+	arena_large_dalloc_stats_update(tsdn, arena, oldusize);
+}
+
+edata_t *
+arena_extent_alloc_large(tsdn_t *tsdn, arena_t *arena, size_t usize,
+    size_t alignment, bool zero) {
+	bool deferred_work_generated = false;
+	szind_t szind = sz_size2index(usize);
+	size_t esize = usize + sz_large_pad;
+
+	bool guarded = san_large_extent_decide_guard(tsdn,
+	    arena_get_ehooks(arena), esize, alignment);
+	edata_t *edata = pa_alloc(tsdn, &arena->pa_shard, esize, alignment,
+	    /* slab */ false, szind, zero, guarded, &deferred_work_generated);
+	assert(deferred_work_generated == false);
+
+	if (edata != NULL) {
+		if (config_stats) {
+			LOCKEDINT_MTX_LOCK(tsdn, arena->stats.mtx);
+			arena_large_malloc_stats_update(tsdn, arena, usize);
+			LOCKEDINT_MTX_UNLOCK(tsdn, arena->stats.mtx);
+		}
+	}
+
+	if (edata != NULL && sz_large_pad != 0) {
+		arena_cache_oblivious_randomize(tsdn, arena, edata, alignment);
+	}
+
+	return edata;
+}
+
+void
+arena_extent_dalloc_large_prep(tsdn_t *tsdn, arena_t *arena, edata_t *edata) {
+	if (config_stats) {
+		LOCKEDINT_MTX_LOCK(tsdn, arena->stats.mtx);
+		arena_large_dalloc_stats_update(tsdn, arena,
+		    edata_usize_get(edata));
+		LOCKEDINT_MTX_UNLOCK(tsdn, arena->stats.mtx);
+	}
+}
+
+void
+arena_extent_ralloc_large_shrink(tsdn_t *tsdn, arena_t *arena, edata_t *edata,
+    size_t oldusize) {
+	size_t usize = edata_usize_get(edata);
+
+	if (config_stats) {
+		LOCKEDINT_MTX_LOCK(tsdn, arena->stats.mtx);
+		arena_large_ralloc_stats_update(tsdn, arena, oldusize, usize);
+		LOCKEDINT_MTX_UNLOCK(tsdn, arena->stats.mtx);
+	}
+}
+
+void
+arena_extent_ralloc_large_expand(tsdn_t *tsdn, arena_t *arena, edata_t *edata,
+    size_t oldusize) {
+	size_t usize = edata_usize_get(edata);
+
+	if (config_stats) {
+		LOCKEDINT_MTX_LOCK(tsdn, arena->stats.mtx);
+		arena_large_ralloc_stats_update(tsdn, arena, oldusize, usize);
+		LOCKEDINT_MTX_UNLOCK(tsdn, arena->stats.mtx);
+	}
+}
+
+/*
+ * In situations where we're not forcing a decay (i.e. because the user
+ * specifically requested it), should we purge ourselves, or wait for the
+ * background thread to get to it.
+ */
+static pac_purge_eagerness_t
+arena_decide_unforced_purge_eagerness(bool is_background_thread) {
+	if (is_background_thread) {
+		return PAC_PURGE_ALWAYS;
+	} else if (!is_background_thread && background_thread_enabled()) {
+		return PAC_PURGE_NEVER;
+	} else {
+		return PAC_PURGE_ON_EPOCH_ADVANCE;
+	}
+}
+
+bool
+arena_decay_ms_set(tsdn_t *tsdn, arena_t *arena, extent_state_t state,
+    ssize_t decay_ms) {
+	pac_purge_eagerness_t eagerness = arena_decide_unforced_purge_eagerness(
+	    /* is_background_thread */ false);
+	return pa_decay_ms_set(tsdn, &arena->pa_shard, state, decay_ms,
+	    eagerness);
+}
+
+ssize_t
+arena_decay_ms_get(arena_t *arena, extent_state_t state) {
+	return pa_decay_ms_get(&arena->pa_shard, state);
+}
+
+static bool
+arena_decay_impl(tsdn_t *tsdn, arena_t *arena, decay_t *decay,
+    pac_decay_stats_t *decay_stats, ecache_t *ecache,
+    bool is_background_thread, bool all) {
+	if (all) {
+		malloc_mutex_lock(tsdn, &decay->mtx);
+		pac_decay_all(tsdn, &arena->pa_shard.pac, decay, decay_stats,
+		    ecache, /* fully_decay */ all);
+		malloc_mutex_unlock(tsdn, &decay->mtx);
+		return false;
+	}
+
+	if (malloc_mutex_trylock(tsdn, &decay->mtx)) {
+		/* No need to wait if another thread is in progress. */
+		return true;
+	}
+	pac_purge_eagerness_t eagerness =
+	    arena_decide_unforced_purge_eagerness(is_background_thread);
+	bool epoch_advanced = pac_maybe_decay_purge(tsdn, &arena->pa_shard.pac,
+	    decay, decay_stats, ecache, eagerness);
+	size_t npages_new;
+	if (epoch_advanced) {
+		/* Backlog is updated on epoch advance. */
+		npages_new = decay_epoch_npages_delta(decay);
+	}
+	malloc_mutex_unlock(tsdn, &decay->mtx);
+
+	if (have_background_thread && background_thread_enabled() &&
+	    epoch_advanced && !is_background_thread) {
+		arena_maybe_do_deferred_work(tsdn, arena, decay, npages_new);
+	}
+
+	return false;
+}
+
+static bool
+arena_decay_dirty(tsdn_t *tsdn, arena_t *arena, bool is_background_thread,
+    bool all) {
+	return arena_decay_impl(tsdn, arena, &arena->pa_shard.pac.decay_dirty,
+	    &arena->pa_shard.pac.stats->decay_dirty,
+	    &arena->pa_shard.pac.ecache_dirty, is_background_thread, all);
+}
+
+static bool
+arena_decay_muzzy(tsdn_t *tsdn, arena_t *arena, bool is_background_thread,
+    bool all) {
+	if (pa_shard_dont_decay_muzzy(&arena->pa_shard)) {
+		return false;
+	}
+	return arena_decay_impl(tsdn, arena, &arena->pa_shard.pac.decay_muzzy,
+	    &arena->pa_shard.pac.stats->decay_muzzy,
+	    &arena->pa_shard.pac.ecache_muzzy, is_background_thread, all);
+}
+
+void
+arena_decay(tsdn_t *tsdn, arena_t *arena, bool is_background_thread, bool all) {
+	if (all) {
+		/*
+		 * We should take a purge of "all" to mean "save as much memory
+		 * as possible", including flushing any caches (for situations
+		 * like thread death, or manual purge calls).
+		 */
+		sec_flush(tsdn, &arena->pa_shard.hpa_sec);
+	}
+	if (arena_decay_dirty(tsdn, arena, is_background_thread, all)) {
+		return;
+	}
+	arena_decay_muzzy(tsdn, arena, is_background_thread, all);
+}
+
+static bool
+arena_should_decay_early(tsdn_t *tsdn, arena_t *arena, decay_t *decay,
+    background_thread_info_t *info, nstime_t *remaining_sleep,
+    size_t npages_new) {
+	malloc_mutex_assert_owner(tsdn, &info->mtx);
+
+	if (malloc_mutex_trylock(tsdn, &decay->mtx)) {
+		return false;
+	}
+
+	if (!decay_gradually(decay)) {
+		malloc_mutex_unlock(tsdn, &decay->mtx);
+		return false;
+	}
+
+	nstime_init(remaining_sleep, background_thread_wakeup_time_get(info));
+	if (nstime_compare(remaining_sleep, &decay->epoch) <= 0) {
+		malloc_mutex_unlock(tsdn, &decay->mtx);
+		return false;
+	}
+	nstime_subtract(remaining_sleep, &decay->epoch);
+	if (npages_new > 0) {
+		uint64_t npurge_new = decay_npages_purge_in(decay,
+		    remaining_sleep, npages_new);
+		info->npages_to_purge_new += npurge_new;
+	}
+	malloc_mutex_unlock(tsdn, &decay->mtx);
+	return info->npages_to_purge_new >
+	    ARENA_DEFERRED_PURGE_NPAGES_THRESHOLD;
+}
+
+/*
+ * Check if deferred work needs to be done sooner than planned.
+ * For decay we might want to wake up earlier because of an influx of dirty
+ * pages. Rather than waiting for previously estimated time, we proactively
+ * purge those pages.
+ * If background thread sleeps indefinitely, always wake up because some
+ * deferred work has been generated.
+ */
+static void
+arena_maybe_do_deferred_work(tsdn_t *tsdn, arena_t *arena, decay_t *decay,
+    size_t npages_new) {
+	background_thread_info_t *info = arena_background_thread_info_get(
+	    arena);
+	if (malloc_mutex_trylock(tsdn, &info->mtx)) {
+		/*
+		 * Background thread may hold the mutex for a long period of
+		 * time.  We'd like to avoid the variance on application
+		 * threads.  So keep this non-blocking, and leave the work to a
+		 * future epoch.
+		 */
+		return;
+	}
+	if (!background_thread_is_started(info)) {
+		goto label_done;
+	}
+
+	nstime_t remaining_sleep;
+	if (background_thread_indefinite_sleep(info)) {
+		background_thread_wakeup_early(info, NULL);
+	} else if (arena_should_decay_early(tsdn, arena, decay, info,
+	    &remaining_sleep, npages_new)) {
+		info->npages_to_purge_new = 0;
+		background_thread_wakeup_early(info, &remaining_sleep);
+	}
+label_done:
+	malloc_mutex_unlock(tsdn, &info->mtx);
+}
+
+/* Called from background threads. */
+void
+arena_do_deferred_work(tsdn_t *tsdn, arena_t *arena) {
+	arena_decay(tsdn, arena, true, false);
+	pa_shard_do_deferred_work(tsdn, &arena->pa_shard);
+}
+
+void
+arena_slab_dalloc(tsdn_t *tsdn, arena_t *arena, edata_t *slab) {
+	bool deferred_work_generated = false;
+	pa_dalloc(tsdn, &arena->pa_shard, slab, &deferred_work_generated);
+	if (deferred_work_generated) {
+		arena_handle_deferred_work(tsdn, arena);
+	}
+}
+
+static void
+arena_bin_slabs_nonfull_insert(bin_t *bin, edata_t *slab) {
+	assert(edata_nfree_get(slab) > 0);
+	edata_heap_insert(&bin->slabs_nonfull, slab);
+	if (config_stats) {
+		bin->stats.nonfull_slabs++;
+	}
+}
+
+static void
+arena_bin_slabs_nonfull_remove(bin_t *bin, edata_t *slab) {
+	edata_heap_remove(&bin->slabs_nonfull, slab);
+	if (config_stats) {
+		bin->stats.nonfull_slabs--;
+	}
+}
+
+static edata_t *
+arena_bin_slabs_nonfull_tryget(bin_t *bin) {
+	edata_t *slab = edata_heap_remove_first(&bin->slabs_nonfull);
+	if (slab == NULL) {
+		return NULL;
+	}
+	if (config_stats) {
+		bin->stats.reslabs++;
+		bin->stats.nonfull_slabs--;
+	}
+	return slab;
+}
+
+static void
+arena_bin_slabs_full_insert(arena_t *arena, bin_t *bin, edata_t *slab) {
+	assert(edata_nfree_get(slab) == 0);
+	/*
+	 *  Tracking extents is required by arena_reset, which is not allowed
+	 *  for auto arenas.  Bypass this step to avoid touching the edata
+	 *  linkage (often results in cache misses) for auto arenas.
+	 */
+	if (arena_is_auto(arena)) {
+		return;
+	}
+	edata_list_active_append(&bin->slabs_full, slab);
+}
+
+static void
+arena_bin_slabs_full_remove(arena_t *arena, bin_t *bin, edata_t *slab) {
+	if (arena_is_auto(arena)) {
+		return;
+	}
+	edata_list_active_remove(&bin->slabs_full, slab);
+}
+
+static void
+arena_bin_reset(tsd_t *tsd, arena_t *arena, bin_t *bin) {
+	edata_t *slab;
+
+	malloc_mutex_lock(tsd_tsdn(tsd), &bin->lock);
+	if (bin->slabcur != NULL) {
+		slab = bin->slabcur;
+		bin->slabcur = NULL;
+		malloc_mutex_unlock(tsd_tsdn(tsd), &bin->lock);
+		arena_slab_dalloc(tsd_tsdn(tsd), arena, slab);
+		malloc_mutex_lock(tsd_tsdn(tsd), &bin->lock);
+	}
+	while ((slab = edata_heap_remove_first(&bin->slabs_nonfull)) != NULL) {
+		malloc_mutex_unlock(tsd_tsdn(tsd), &bin->lock);
+		arena_slab_dalloc(tsd_tsdn(tsd), arena, slab);
+		malloc_mutex_lock(tsd_tsdn(tsd), &bin->lock);
+	}
+	for (slab = edata_list_active_first(&bin->slabs_full); slab != NULL;
+	     slab = edata_list_active_first(&bin->slabs_full)) {
+		arena_bin_slabs_full_remove(arena, bin, slab);
+		malloc_mutex_unlock(tsd_tsdn(tsd), &bin->lock);
+		arena_slab_dalloc(tsd_tsdn(tsd), arena, slab);
+		malloc_mutex_lock(tsd_tsdn(tsd), &bin->lock);
+	}
+	if (config_stats) {
+		bin->stats.curregs = 0;
+		bin->stats.curslabs = 0;
+	}
+	malloc_mutex_unlock(tsd_tsdn(tsd), &bin->lock);
+}
+
+void
+arena_reset(tsd_t *tsd, arena_t *arena) {
+	/*
+	 * Locking in this function is unintuitive.  The caller guarantees that
+	 * no concurrent operations are happening in this arena, but there are
+	 * still reasons that some locking is necessary:
+	 *
+	 * - Some of the functions in the transitive closure of calls assume
+	 *   appropriate locks are held, and in some cases these locks are
+	 *   temporarily dropped to avoid lock order reversal or deadlock due to
+	 *   reentry.
+	 * - mallctl("epoch", ...) may concurrently refresh stats.  While
+	 *   strictly speaking this is a "concurrent operation", disallowing
+	 *   stats refreshes would impose an inconvenient burden.
+	 */
+
+	/* Large allocations. */
+	malloc_mutex_lock(tsd_tsdn(tsd), &arena->large_mtx);
+
+	for (edata_t *edata = edata_list_active_first(&arena->large);
+	    edata != NULL; edata = edata_list_active_first(&arena->large)) {
+		void *ptr = edata_base_get(edata);
+		size_t usize;
+
+		malloc_mutex_unlock(tsd_tsdn(tsd), &arena->large_mtx);
+		emap_alloc_ctx_t alloc_ctx;
+		emap_alloc_ctx_lookup(tsd_tsdn(tsd), &arena_emap_global, ptr,
+		    &alloc_ctx);
+		assert(alloc_ctx.szind != SC_NSIZES);
+
+		if (config_stats || (config_prof && opt_prof)) {
+			usize = sz_index2size(alloc_ctx.szind);
+			assert(usize == isalloc(tsd_tsdn(tsd), ptr));
+		}
+		/* Remove large allocation from prof sample set. */
+		if (config_prof && opt_prof) {
+			prof_free(tsd, ptr, usize, &alloc_ctx);
+		}
+		large_dalloc(tsd_tsdn(tsd), edata);
+		malloc_mutex_lock(tsd_tsdn(tsd), &arena->large_mtx);
+	}
+	malloc_mutex_unlock(tsd_tsdn(tsd), &arena->large_mtx);
+
+	/* Bins. */
+	for (unsigned i = 0; i < SC_NBINS; i++) {
+		for (unsigned j = 0; j < bin_infos[i].n_shards; j++) {
+			arena_bin_reset(tsd, arena, arena_get_bin(arena, i, j));
+		}
+	}
+	pa_shard_reset(tsd_tsdn(tsd), &arena->pa_shard);
+}
+
+static void
+arena_prepare_base_deletion_sync_finish(tsd_t *tsd, malloc_mutex_t **mutexes,
+    unsigned n_mtx) {
+	for (unsigned i = 0; i < n_mtx; i++) {
+		malloc_mutex_lock(tsd_tsdn(tsd), mutexes[i]);
+		malloc_mutex_unlock(tsd_tsdn(tsd), mutexes[i]);
+	}
+}
+
+#define ARENA_DESTROY_MAX_DELAYED_MTX 32
+static void
+arena_prepare_base_deletion_sync(tsd_t *tsd, malloc_mutex_t *mtx,
+    malloc_mutex_t **delayed_mtx, unsigned *n_delayed) {
+	if (!malloc_mutex_trylock(tsd_tsdn(tsd), mtx)) {
+		/* No contention. */
+		malloc_mutex_unlock(tsd_tsdn(tsd), mtx);
+		return;
+	}
+	unsigned n = *n_delayed;
+	assert(n < ARENA_DESTROY_MAX_DELAYED_MTX);
+	/* Add another to the batch. */
+	delayed_mtx[n++] = mtx;
+
+	if (n == ARENA_DESTROY_MAX_DELAYED_MTX) {
+		arena_prepare_base_deletion_sync_finish(tsd, delayed_mtx, n);
+		n = 0;
+	}
+	*n_delayed = n;
+}
+
+static void
+arena_prepare_base_deletion(tsd_t *tsd, base_t *base_to_destroy) {
+	/*
+	 * In order to coalesce, emap_try_acquire_edata_neighbor will attempt to
+	 * check neighbor edata's state to determine eligibility.  This means
+	 * under certain conditions, the metadata from an arena can be accessed
+	 * w/o holding any locks from that arena.  In order to guarantee safe
+	 * memory access, the metadata and the underlying base allocator needs
+	 * to be kept alive, until all pending accesses are done.
+	 *
+	 * 1) with opt_retain, the arena boundary implies the is_head state
+	 * (tracked in the rtree leaf), and the coalesce flow will stop at the
+	 * head state branch.  Therefore no cross arena metadata access
+	 * possible.
+	 *
+	 * 2) w/o opt_retain, the arena id needs to be read from the edata_t,
+	 * meaning read only cross-arena metadata access is possible.  The
+	 * coalesce attempt will stop at the arena_id mismatch, and is always
+	 * under one of the ecache locks.  To allow safe passthrough of such
+	 * metadata accesses, the loop below will iterate through all manual
+	 * arenas' ecache locks.  As all the metadata from this base allocator
+	 * have been unlinked from the rtree, after going through all the
+	 * relevant ecache locks, it's safe to say that a) pending accesses are
+	 * all finished, and b) no new access will be generated.
+	 */
+	if (opt_retain) {
+		return;
+	}
+	unsigned destroy_ind = base_ind_get(base_to_destroy);
+	assert(destroy_ind >= manual_arena_base);
+
+	tsdn_t *tsdn = tsd_tsdn(tsd);
+	malloc_mutex_t *delayed_mtx[ARENA_DESTROY_MAX_DELAYED_MTX];
+	unsigned n_delayed = 0, total = narenas_total_get();
+	for (unsigned i = 0; i < total; i++) {
+		if (i == destroy_ind) {
+			continue;
+		}
+		arena_t *arena = arena_get(tsdn, i, false);
+		if (arena == NULL) {
+			continue;
+		}
+		pac_t *pac = &arena->pa_shard.pac;
+		arena_prepare_base_deletion_sync(tsd, &pac->ecache_dirty.mtx,
+		    delayed_mtx, &n_delayed);
+		arena_prepare_base_deletion_sync(tsd, &pac->ecache_muzzy.mtx,
+		    delayed_mtx, &n_delayed);
+		arena_prepare_base_deletion_sync(tsd, &pac->ecache_retained.mtx,
+		    delayed_mtx, &n_delayed);
+	}
+	arena_prepare_base_deletion_sync_finish(tsd, delayed_mtx, n_delayed);
+}
+#undef ARENA_DESTROY_MAX_DELAYED_MTX
+
+void
+arena_destroy(tsd_t *tsd, arena_t *arena) {
+	assert(base_ind_get(arena->base) >= narenas_auto);
+	assert(arena_nthreads_get(arena, false) == 0);
+	assert(arena_nthreads_get(arena, true) == 0);
+
+	/*
+	 * No allocations have occurred since arena_reset() was called.
+	 * Furthermore, the caller (arena_i_destroy_ctl()) purged all cached
+	 * extents, so only retained extents may remain and it's safe to call
+	 * pa_shard_destroy_retained.
+	 */
+	pa_shard_destroy(tsd_tsdn(tsd), &arena->pa_shard);
+
+	/*
+	 * Remove the arena pointer from the arenas array.  We rely on the fact
+	 * that there is no way for the application to get a dirty read from the
+	 * arenas array unless there is an inherent race in the application
+	 * involving access of an arena being concurrently destroyed.  The
+	 * application must synchronize knowledge of the arena's validity, so as
+	 * long as we use an atomic write to update the arenas array, the
+	 * application will get a clean read any time after it synchronizes
+	 * knowledge that the arena is no longer valid.
+	 */
+	arena_set(base_ind_get(arena->base), NULL);
+
+	/*
+	 * Destroy the base allocator, which manages all metadata ever mapped by
+	 * this arena.  The prepare function will make sure no pending access to
+	 * the metadata in this base anymore.
+	 */
+	arena_prepare_base_deletion(tsd, arena->base);
+	base_delete(tsd_tsdn(tsd), arena->base);
+}
+
+static edata_t *
+arena_slab_alloc(tsdn_t *tsdn, arena_t *arena, szind_t binind, unsigned binshard,
+    const bin_info_t *bin_info) {
+	bool deferred_work_generated = false;
+	witness_assert_depth_to_rank(tsdn_witness_tsdp_get(tsdn),
+	    WITNESS_RANK_CORE, 0);
+
+	bool guarded = san_slab_extent_decide_guard(tsdn,
+	    arena_get_ehooks(arena));
+	edata_t *slab = pa_alloc(tsdn, &arena->pa_shard, bin_info->slab_size,
+	    /* alignment */ PAGE, /* slab */ true, /* szind */ binind,
+	     /* zero */ false, guarded, &deferred_work_generated);
+
+	if (deferred_work_generated) {
+		arena_handle_deferred_work(tsdn, arena);
+	}
+
+	if (slab == NULL) {
+		return NULL;
+	}
+	assert(edata_slab_get(slab));
+
+	/* Initialize slab internals. */
+	slab_data_t *slab_data = edata_slab_data_get(slab);
+	edata_nfree_binshard_set(slab, bin_info->nregs, binshard);
+	bitmap_init(slab_data->bitmap, &bin_info->bitmap_info, false);
+
+	return slab;
+}
+
+/*
+ * Before attempting the _with_fresh_slab approaches below, the _no_fresh_slab
+ * variants (i.e. through slabcur and nonfull) must be tried first.
+ */
+static void
+arena_bin_refill_slabcur_with_fresh_slab(tsdn_t *tsdn, arena_t *arena,
+    bin_t *bin, szind_t binind, edata_t *fresh_slab) {
+	malloc_mutex_assert_owner(tsdn, &bin->lock);
+	/* Only called after slabcur and nonfull both failed. */
+	assert(bin->slabcur == NULL);
+	assert(edata_heap_first(&bin->slabs_nonfull) == NULL);
+	assert(fresh_slab != NULL);
+
+	/* A new slab from arena_slab_alloc() */
+	assert(edata_nfree_get(fresh_slab) == bin_infos[binind].nregs);
+	if (config_stats) {
+		bin->stats.nslabs++;
+		bin->stats.curslabs++;
+	}
+	bin->slabcur = fresh_slab;
+}
+
+/* Refill slabcur and then alloc using the fresh slab */
+static void *
+arena_bin_malloc_with_fresh_slab(tsdn_t *tsdn, arena_t *arena, bin_t *bin,
+    szind_t binind, edata_t *fresh_slab) {
+	malloc_mutex_assert_owner(tsdn, &bin->lock);
+	arena_bin_refill_slabcur_with_fresh_slab(tsdn, arena, bin, binind,
+	    fresh_slab);
+
+	return arena_slab_reg_alloc(bin->slabcur, &bin_infos[binind]);
+}
+
+static bool
+arena_bin_refill_slabcur_no_fresh_slab(tsdn_t *tsdn, arena_t *arena,
+    bin_t *bin) {
+	malloc_mutex_assert_owner(tsdn, &bin->lock);
+	/* Only called after arena_slab_reg_alloc[_batch] failed. */
+	assert(bin->slabcur == NULL || edata_nfree_get(bin->slabcur) == 0);
+
+	if (bin->slabcur != NULL) {
+		arena_bin_slabs_full_insert(arena, bin, bin->slabcur);
+	}
+
+	/* Look for a usable slab. */
+	bin->slabcur = arena_bin_slabs_nonfull_tryget(bin);
+	assert(bin->slabcur == NULL || edata_nfree_get(bin->slabcur) > 0);
+
+	return (bin->slabcur == NULL);
+}
+
+bin_t *
+arena_bin_choose(tsdn_t *tsdn, arena_t *arena, szind_t binind,
+    unsigned *binshard_p) {
+	unsigned binshard;
+	if (tsdn_null(tsdn) || tsd_arena_get(tsdn_tsd(tsdn)) == NULL) {
+		binshard = 0;
+	} else {
+		binshard = tsd_binshardsp_get(tsdn_tsd(tsdn))->binshard[binind];
+	}
+	assert(binshard < bin_infos[binind].n_shards);
+	if (binshard_p != NULL) {
+		*binshard_p = binshard;
+	}
+	return arena_get_bin(arena, binind, binshard);
+}
+
+void
+arena_cache_bin_fill_small(tsdn_t *tsdn, arena_t *arena,
+    cache_bin_t *cache_bin, cache_bin_info_t *cache_bin_info, szind_t binind,
+    const unsigned nfill) {
+	assert(cache_bin_ncached_get_local(cache_bin, cache_bin_info) == 0);
+
+	const bin_info_t *bin_info = &bin_infos[binind];
+
+	CACHE_BIN_PTR_ARRAY_DECLARE(ptrs, nfill);
+	cache_bin_init_ptr_array_for_fill(cache_bin, cache_bin_info, &ptrs,
+	    nfill);
+	/*
+	 * Bin-local resources are used first: 1) bin->slabcur, and 2) nonfull
+	 * slabs.  After both are exhausted, new slabs will be allocated through
+	 * arena_slab_alloc().
+	 *
+	 * Bin lock is only taken / released right before / after the while(...)
+	 * refill loop, with new slab allocation (which has its own locking)
+	 * kept outside of the loop.  This setup facilitates flat combining, at
+	 * the cost of the nested loop (through goto label_refill).
+	 *
+	 * To optimize for cases with contention and limited resources
+	 * (e.g. hugepage-backed or non-overcommit arenas), each fill-iteration
+	 * gets one chance of slab_alloc, and a retry of bin local resources
+	 * after the slab allocation (regardless if slab_alloc failed, because
+	 * the bin lock is dropped during the slab allocation).
+	 *
+	 * In other words, new slab allocation is allowed, as long as there was
+	 * progress since the previous slab_alloc.  This is tracked with
+	 * made_progress below, initialized to true to jump start the first
+	 * iteration.
+	 *
+	 * In other words (again), the loop will only terminate early (i.e. stop
+	 * with filled < nfill) after going through the three steps: a) bin
+	 * local exhausted, b) unlock and slab_alloc returns null, c) re-lock
+	 * and bin local fails again.
+	 */
+	bool made_progress = true;
+	edata_t *fresh_slab = NULL;
+	bool alloc_and_retry = false;
+	unsigned filled = 0;
+	unsigned binshard;
+	bin_t *bin = arena_bin_choose(tsdn, arena, binind, &binshard);
+
+label_refill:
+	malloc_mutex_lock(tsdn, &bin->lock);
+
+	while (filled < nfill) {
+		/* Try batch-fill from slabcur first. */
+		edata_t *slabcur = bin->slabcur;
+		if (slabcur != NULL && edata_nfree_get(slabcur) > 0) {
+			unsigned tofill = nfill - filled;
+			unsigned nfree = edata_nfree_get(slabcur);
+			unsigned cnt = tofill < nfree ? tofill : nfree;
+
+			arena_slab_reg_alloc_batch(slabcur, bin_info, cnt,
+			    &ptrs.ptr[filled]);
+			made_progress = true;
+			filled += cnt;
+			continue;
+		}
+		/* Next try refilling slabcur from nonfull slabs. */
+		if (!arena_bin_refill_slabcur_no_fresh_slab(tsdn, arena, bin)) {
+			assert(bin->slabcur != NULL);
+			continue;
+		}
+
+		/* Then see if a new slab was reserved already. */
+		if (fresh_slab != NULL) {
+			arena_bin_refill_slabcur_with_fresh_slab(tsdn, arena,
+			    bin, binind, fresh_slab);
+			assert(bin->slabcur != NULL);
+			fresh_slab = NULL;
+			continue;
+		}
+
+		/* Try slab_alloc if made progress (or never did slab_alloc). */
+		if (made_progress) {
+			assert(bin->slabcur == NULL);
+			assert(fresh_slab == NULL);
+			alloc_and_retry = true;
+			/* Alloc a new slab then come back. */
+			break;
+		}
+
+		/* OOM. */
+
+		assert(fresh_slab == NULL);
+		assert(!alloc_and_retry);
+		break;
+	} /* while (filled < nfill) loop. */
+
+	if (config_stats && !alloc_and_retry) {
+		bin->stats.nmalloc += filled;
+		bin->stats.nrequests += cache_bin->tstats.nrequests;
+		bin->stats.curregs += filled;
+		bin->stats.nfills++;
+		cache_bin->tstats.nrequests = 0;
+	}
+
+	malloc_mutex_unlock(tsdn, &bin->lock);
+
+	if (alloc_and_retry) {
+		assert(fresh_slab == NULL);
+		assert(filled < nfill);
+		assert(made_progress);
+
+		fresh_slab = arena_slab_alloc(tsdn, arena, binind, binshard,
+		    bin_info);
+		/* fresh_slab NULL case handled in the for loop. */
+
+		alloc_and_retry = false;
+		made_progress = false;
+		goto label_refill;
+	}
+	assert(filled == nfill || (fresh_slab == NULL && !made_progress));
+
+	/* Release if allocated but not used. */
+	if (fresh_slab != NULL) {
+		assert(edata_nfree_get(fresh_slab) == bin_info->nregs);
+		arena_slab_dalloc(tsdn, arena, fresh_slab);
+		fresh_slab = NULL;
+	}
+
+	cache_bin_finish_fill(cache_bin, cache_bin_info, &ptrs, filled);
+	arena_decay_tick(tsdn, arena);
+}
+
+size_t
+arena_fill_small_fresh(tsdn_t *tsdn, arena_t *arena, szind_t binind,
+    void **ptrs, size_t nfill, bool zero) {
+	assert(binind < SC_NBINS);
+	const bin_info_t *bin_info = &bin_infos[binind];
+	const size_t nregs = bin_info->nregs;
+	assert(nregs > 0);
+	const size_t usize = bin_info->reg_size;
+
+	const bool manual_arena = !arena_is_auto(arena);
+	unsigned binshard;
+	bin_t *bin = arena_bin_choose(tsdn, arena, binind, &binshard);
+
+	size_t nslab = 0;
+	size_t filled = 0;
+	edata_t *slab = NULL;
+	edata_list_active_t fulls;
+	edata_list_active_init(&fulls);
+
+	while (filled < nfill && (slab = arena_slab_alloc(tsdn, arena, binind,
+	    binshard, bin_info)) != NULL) {
+		assert((size_t)edata_nfree_get(slab) == nregs);
+		++nslab;
+		size_t batch = nfill - filled;
+		if (batch > nregs) {
+			batch = nregs;
+		}
+		assert(batch > 0);
+		arena_slab_reg_alloc_batch(slab, bin_info, (unsigned)batch,
+		    &ptrs[filled]);
+		assert(edata_addr_get(slab) == ptrs[filled]);
+		if (zero) {
+			memset(ptrs[filled], 0, batch * usize);
+		}
+		filled += batch;
+		if (batch == nregs) {
+			if (manual_arena) {
+				edata_list_active_append(&fulls, slab);
+			}
+			slab = NULL;
+		}
+	}
+
+	malloc_mutex_lock(tsdn, &bin->lock);
+	/*
+	 * Only the last slab can be non-empty, and the last slab is non-empty
+	 * iff slab != NULL.
+	 */
+	if (slab != NULL) {
+		arena_bin_lower_slab(tsdn, arena, slab, bin);
+	}
+	if (manual_arena) {
+		edata_list_active_concat(&bin->slabs_full, &fulls);
+	}
+	assert(edata_list_active_empty(&fulls));
+	if (config_stats) {
+		bin->stats.nslabs += nslab;
+		bin->stats.curslabs += nslab;
+		bin->stats.nmalloc += filled;
+		bin->stats.nrequests += filled;
+		bin->stats.curregs += filled;
+	}
+	malloc_mutex_unlock(tsdn, &bin->lock);
+
+	arena_decay_tick(tsdn, arena);
+	return filled;
+}
+
+/*
+ * Without allocating a new slab, try arena_slab_reg_alloc() and re-fill
+ * bin->slabcur if necessary.
+ */
+static void *
+arena_bin_malloc_no_fresh_slab(tsdn_t *tsdn, arena_t *arena, bin_t *bin,
+    szind_t binind) {
+	malloc_mutex_assert_owner(tsdn, &bin->lock);
+	if (bin->slabcur == NULL || edata_nfree_get(bin->slabcur) == 0) {
+		if (arena_bin_refill_slabcur_no_fresh_slab(tsdn, arena, bin)) {
+			return NULL;
+		}
+	}
+
+	assert(bin->slabcur != NULL && edata_nfree_get(bin->slabcur) > 0);
+	return arena_slab_reg_alloc(bin->slabcur, &bin_infos[binind]);
+}
+
+static void *
+arena_malloc_small(tsdn_t *tsdn, arena_t *arena, szind_t binind, bool zero) {
+	assert(binind < SC_NBINS);
+	const bin_info_t *bin_info = &bin_infos[binind];
+	size_t usize = sz_index2size(binind);
+	unsigned binshard;
+	bin_t *bin = arena_bin_choose(tsdn, arena, binind, &binshard);
+
+	malloc_mutex_lock(tsdn, &bin->lock);
+	edata_t *fresh_slab = NULL;
+	void *ret = arena_bin_malloc_no_fresh_slab(tsdn, arena, bin, binind);
+	if (ret == NULL) {
+		malloc_mutex_unlock(tsdn, &bin->lock);
+		/******************************/
+		fresh_slab = arena_slab_alloc(tsdn, arena, binind, binshard,
+		    bin_info);
+		/********************************/
+		malloc_mutex_lock(tsdn, &bin->lock);
+		/* Retry since the lock was dropped. */
+		ret = arena_bin_malloc_no_fresh_slab(tsdn, arena, bin, binind);
+		if (ret == NULL) {
+			if (fresh_slab == NULL) {
+				/* OOM */
+				malloc_mutex_unlock(tsdn, &bin->lock);
+				return NULL;
+			}
+			ret = arena_bin_malloc_with_fresh_slab(tsdn, arena, bin,
+			    binind, fresh_slab);
+			fresh_slab = NULL;
+		}
+	}
+	if (config_stats) {
+		bin->stats.nmalloc++;
+		bin->stats.nrequests++;
+		bin->stats.curregs++;
+	}
+	malloc_mutex_unlock(tsdn, &bin->lock);
+
+	if (fresh_slab != NULL) {
+		arena_slab_dalloc(tsdn, arena, fresh_slab);
+	}
+	if (zero) {
+		memset(ret, 0, usize);
+	}
+	arena_decay_tick(tsdn, arena);
+
+	return ret;
+}
+
+void *
+arena_malloc_hard(tsdn_t *tsdn, arena_t *arena, size_t size, szind_t ind,
+    bool zero) {
+	assert(!tsdn_null(tsdn) || arena != NULL);
+
+	if (likely(!tsdn_null(tsdn))) {
+		arena = arena_choose_maybe_huge(tsdn_tsd(tsdn), arena, size);
+	}
+	if (unlikely(arena == NULL)) {
+		return NULL;
+	}
+
+	if (likely(size <= SC_SMALL_MAXCLASS)) {
+		return arena_malloc_small(tsdn, arena, ind, zero);
+	}
+	return large_malloc(tsdn, arena, sz_index2size(ind), zero);
+}
+
+void *
+arena_palloc(tsdn_t *tsdn, arena_t *arena, size_t usize, size_t alignment,
+    bool zero, tcache_t *tcache) {
+	void *ret;
+
+	if (usize <= SC_SMALL_MAXCLASS) {
+		/* Small; alignment doesn't require special slab placement. */
+
+		/* usize should be a result of sz_sa2u() */
+		assert((usize & (alignment - 1)) == 0);
+
+		/*
+		 * Small usize can't come from an alignment larger than a page.
+		 */
+		assert(alignment <= PAGE);
+
+		ret = arena_malloc(tsdn, arena, usize, sz_size2index(usize),
+		    zero, tcache, true);
+	} else {
+		if (likely(alignment <= CACHELINE)) {
+			ret = large_malloc(tsdn, arena, usize, zero);
+		} else {
+			ret = large_palloc(tsdn, arena, usize, alignment, zero);
+		}
+	}
+	return ret;
+}
+
+void
+arena_prof_promote(tsdn_t *tsdn, void *ptr, size_t usize) {
+	cassert(config_prof);
+	assert(ptr != NULL);
+	assert(isalloc(tsdn, ptr) == SC_LARGE_MINCLASS);
+	assert(usize <= SC_SMALL_MAXCLASS);
+
+	if (config_opt_safety_checks) {
+		safety_check_set_redzone(ptr, usize, SC_LARGE_MINCLASS);
+	}
+
+	edata_t *edata = emap_edata_lookup(tsdn, &arena_emap_global, ptr);
+
+	szind_t szind = sz_size2index(usize);
+	edata_szind_set(edata, szind);
+	emap_remap(tsdn, &arena_emap_global, edata, szind, /* slab */ false);
+
+	assert(isalloc(tsdn, ptr) == usize);
+}
+
+static size_t
+arena_prof_demote(tsdn_t *tsdn, edata_t *edata, const void *ptr) {
+	cassert(config_prof);
+	assert(ptr != NULL);
+
+	edata_szind_set(edata, SC_NBINS);
+	emap_remap(tsdn, &arena_emap_global, edata, SC_NBINS, /* slab */ false);
+
+	assert(isalloc(tsdn, ptr) == SC_LARGE_MINCLASS);
+
+	return SC_LARGE_MINCLASS;
+}
+
+void
+arena_dalloc_promoted(tsdn_t *tsdn, void *ptr, tcache_t *tcache,
+    bool slow_path) {
+	cassert(config_prof);
+	assert(opt_prof);
+
+	edata_t *edata = emap_edata_lookup(tsdn, &arena_emap_global, ptr);
+	size_t usize = edata_usize_get(edata);
+	size_t bumped_usize = arena_prof_demote(tsdn, edata, ptr);
+	if (config_opt_safety_checks && usize < SC_LARGE_MINCLASS) {
+		/*
+		 * Currently, we only do redzoning for small sampled
+		 * allocations.
+		 */
+		assert(bumped_usize == SC_LARGE_MINCLASS);
+		safety_check_verify_redzone(ptr, usize, bumped_usize);
+	}
+	if (bumped_usize <= tcache_maxclass && tcache != NULL) {
+		tcache_dalloc_large(tsdn_tsd(tsdn), tcache, ptr,
+		    sz_size2index(bumped_usize), slow_path);
+	} else {
+		large_dalloc(tsdn, edata);
+	}
+}
+
+static void
+arena_dissociate_bin_slab(arena_t *arena, edata_t *slab, bin_t *bin) {
+	/* Dissociate slab from bin. */
+	if (slab == bin->slabcur) {
+		bin->slabcur = NULL;
+	} else {
+		szind_t binind = edata_szind_get(slab);
+		const bin_info_t *bin_info = &bin_infos[binind];
+
+		/*
+		 * The following block's conditional is necessary because if the
+		 * slab only contains one region, then it never gets inserted
+		 * into the non-full slabs heap.
+		 */
+		if (bin_info->nregs == 1) {
+			arena_bin_slabs_full_remove(arena, bin, slab);
+		} else {
+			arena_bin_slabs_nonfull_remove(bin, slab);
+		}
+	}
+}
+
+static void
+arena_bin_lower_slab(tsdn_t *tsdn, arena_t *arena, edata_t *slab,
+    bin_t *bin) {
+	assert(edata_nfree_get(slab) > 0);
+
+	/*
+	 * Make sure that if bin->slabcur is non-NULL, it refers to the
+	 * oldest/lowest non-full slab.  It is okay to NULL slabcur out rather
+	 * than proactively keeping it pointing at the oldest/lowest non-full
+	 * slab.
+	 */
+	if (bin->slabcur != NULL && edata_snad_comp(bin->slabcur, slab) > 0) {
+		/* Switch slabcur. */
+		if (edata_nfree_get(bin->slabcur) > 0) {
+			arena_bin_slabs_nonfull_insert(bin, bin->slabcur);
+		} else {
+			arena_bin_slabs_full_insert(arena, bin, bin->slabcur);
+		}
+		bin->slabcur = slab;
+		if (config_stats) {
+			bin->stats.reslabs++;
+		}
+	} else {
+		arena_bin_slabs_nonfull_insert(bin, slab);
+	}
+}
+
+static void
+arena_dalloc_bin_slab_prepare(tsdn_t *tsdn, edata_t *slab, bin_t *bin) {
+	malloc_mutex_assert_owner(tsdn, &bin->lock);
+
+	assert(slab != bin->slabcur);
+	if (config_stats) {
+		bin->stats.curslabs--;
+	}
+}
+
+void
+arena_dalloc_bin_locked_handle_newly_empty(tsdn_t *tsdn, arena_t *arena,
+    edata_t *slab, bin_t *bin) {
+	arena_dissociate_bin_slab(arena, slab, bin);
+	arena_dalloc_bin_slab_prepare(tsdn, slab, bin);
+}
+
+void
+arena_dalloc_bin_locked_handle_newly_nonempty(tsdn_t *tsdn, arena_t *arena,
+    edata_t *slab, bin_t *bin) {
+	arena_bin_slabs_full_remove(arena, bin, slab);
+	arena_bin_lower_slab(tsdn, arena, slab, bin);
+}
+
+static void
+arena_dalloc_bin(tsdn_t *tsdn, arena_t *arena, edata_t *edata, void *ptr) {
+	szind_t binind = edata_szind_get(edata);
+	unsigned binshard = edata_binshard_get(edata);
+	bin_t *bin = arena_get_bin(arena, binind, binshard);
+
+	malloc_mutex_lock(tsdn, &bin->lock);
+	arena_dalloc_bin_locked_info_t info;
+	arena_dalloc_bin_locked_begin(&info, binind);
+	bool ret = arena_dalloc_bin_locked_step(tsdn, arena, bin,
+	    &info, binind, edata, ptr);
+	arena_dalloc_bin_locked_finish(tsdn, arena, bin, &info);
+	malloc_mutex_unlock(tsdn, &bin->lock);
+
+	if (ret) {
+		arena_slab_dalloc(tsdn, arena, edata);
+	}
+}
+
+void
+arena_dalloc_small(tsdn_t *tsdn, void *ptr) {
+	edata_t *edata = emap_edata_lookup(tsdn, &arena_emap_global, ptr);
+	arena_t *arena = arena_get_from_edata(edata);
+
+	arena_dalloc_bin(tsdn, arena, edata, ptr);
+	arena_decay_tick(tsdn, arena);
+}
+
+bool
+arena_ralloc_no_move(tsdn_t *tsdn, void *ptr, size_t oldsize, size_t size,
+    size_t extra, bool zero, size_t *newsize) {
+	bool ret;
+	/* Calls with non-zero extra had to clamp extra. */
+	assert(extra == 0 || size + extra <= SC_LARGE_MAXCLASS);
+
+	edata_t *edata = emap_edata_lookup(tsdn, &arena_emap_global, ptr);
+	if (unlikely(size > SC_LARGE_MAXCLASS)) {
+		ret = true;
+		goto done;
+	}
+
+	size_t usize_min = sz_s2u(size);
+	size_t usize_max = sz_s2u(size + extra);
+	if (likely(oldsize <= SC_SMALL_MAXCLASS && usize_min
+	    <= SC_SMALL_MAXCLASS)) {
+		/*
+		 * Avoid moving the allocation if the size class can be left the
+		 * same.
+		 */
+		assert(bin_infos[sz_size2index(oldsize)].reg_size ==
+		    oldsize);
+		if ((usize_max > SC_SMALL_MAXCLASS
+		    || sz_size2index(usize_max) != sz_size2index(oldsize))
+		    && (size > oldsize || usize_max < oldsize)) {
+			ret = true;
+			goto done;
+		}
+
+		arena_t *arena = arena_get_from_edata(edata);
+		arena_decay_tick(tsdn, arena);
+		ret = false;
+	} else if (oldsize >= SC_LARGE_MINCLASS
+	    && usize_max >= SC_LARGE_MINCLASS) {
+		ret = large_ralloc_no_move(tsdn, edata, usize_min, usize_max,
+		    zero);
+	} else {
+		ret = true;
+	}
+done:
+	assert(edata == emap_edata_lookup(tsdn, &arena_emap_global, ptr));
+	*newsize = edata_usize_get(edata);
+
+	return ret;
+}
+
+static void *
+arena_ralloc_move_helper(tsdn_t *tsdn, arena_t *arena, size_t usize,
+    size_t alignment, bool zero, tcache_t *tcache) {
+	if (alignment == 0) {
+		return arena_malloc(tsdn, arena, usize, sz_size2index(usize),
+		    zero, tcache, true);
+	}
+	usize = sz_sa2u(usize, alignment);
+	if (unlikely(usize == 0 || usize > SC_LARGE_MAXCLASS)) {
+		return NULL;
+	}
+	return ipalloct(tsdn, usize, alignment, zero, tcache, arena);
+}
+
+void *
+arena_ralloc(tsdn_t *tsdn, arena_t *arena, void *ptr, size_t oldsize,
+    size_t size, size_t alignment, bool zero, tcache_t *tcache,
+    hook_ralloc_args_t *hook_args) {
+	size_t usize = alignment == 0 ? sz_s2u(size) : sz_sa2u(size, alignment);
+	if (unlikely(usize == 0 || size > SC_LARGE_MAXCLASS)) {
+		return NULL;
+	}
+
+	if (likely(usize <= SC_SMALL_MAXCLASS)) {
+		/* Try to avoid moving the allocation. */
+		UNUSED size_t newsize;
+		if (!arena_ralloc_no_move(tsdn, ptr, oldsize, usize, 0, zero,
+		    &newsize)) {
+			hook_invoke_expand(hook_args->is_realloc
+			    ? hook_expand_realloc : hook_expand_rallocx,
+			    ptr, oldsize, usize, (uintptr_t)ptr,
+			    hook_args->args);
+			return ptr;
+		}
+	}
+
+	if (oldsize >= SC_LARGE_MINCLASS
+	    && usize >= SC_LARGE_MINCLASS) {
+		return large_ralloc(tsdn, arena, ptr, usize,
+		    alignment, zero, tcache, hook_args);
+	}
+
+	/*
+	 * size and oldsize are different enough that we need to move the
+	 * object.  In that case, fall back to allocating new space and copying.
+	 */
+	void *ret = arena_ralloc_move_helper(tsdn, arena, usize, alignment,
+	    zero, tcache);
+	if (ret == NULL) {
+		return NULL;
+	}
+
+	hook_invoke_alloc(hook_args->is_realloc
+	    ? hook_alloc_realloc : hook_alloc_rallocx, ret, (uintptr_t)ret,
+	    hook_args->args);
+	hook_invoke_dalloc(hook_args->is_realloc
+	    ? hook_dalloc_realloc : hook_dalloc_rallocx, ptr, hook_args->args);
+
+	/*
+	 * Junk/zero-filling were already done by
+	 * ipalloc()/arena_malloc().
+	 */
+	size_t copysize = (usize < oldsize) ? usize : oldsize;
+	memcpy(ret, ptr, copysize);
+	isdalloct(tsdn, ptr, oldsize, tcache, NULL, true);
+	return ret;
+}
+
+ehooks_t *
+arena_get_ehooks(arena_t *arena) {
+	return base_ehooks_get(arena->base);
+}
+
+extent_hooks_t *
+arena_set_extent_hooks(tsd_t *tsd, arena_t *arena,
+    extent_hooks_t *extent_hooks) {
+	background_thread_info_t *info;
+	if (have_background_thread) {
+		info = arena_background_thread_info_get(arena);
+		malloc_mutex_lock(tsd_tsdn(tsd), &info->mtx);
+	}
+	/* No using the HPA now that we have the custom hooks. */
+	pa_shard_disable_hpa(tsd_tsdn(tsd), &arena->pa_shard);
+	extent_hooks_t *ret = base_extent_hooks_set(arena->base, extent_hooks);
+	if (have_background_thread) {
+		malloc_mutex_unlock(tsd_tsdn(tsd), &info->mtx);
+	}
+
+	return ret;
+}
+
+dss_prec_t
+arena_dss_prec_get(arena_t *arena) {
+	return (dss_prec_t)atomic_load_u(&arena->dss_prec, ATOMIC_ACQUIRE);
+}
+
+bool
+arena_dss_prec_set(arena_t *arena, dss_prec_t dss_prec) {
+	if (!have_dss) {
+		return (dss_prec != dss_prec_disabled);
+	}
+	atomic_store_u(&arena->dss_prec, (unsigned)dss_prec, ATOMIC_RELEASE);
+	return false;
+}
+
+ssize_t
+arena_dirty_decay_ms_default_get(void) {
+	return atomic_load_zd(&dirty_decay_ms_default, ATOMIC_RELAXED);
+}
+
+bool
+arena_dirty_decay_ms_default_set(ssize_t decay_ms) {
+	if (!decay_ms_valid(decay_ms)) {
+		return true;
+	}
+	atomic_store_zd(&dirty_decay_ms_default, decay_ms, ATOMIC_RELAXED);
+	return false;
+}
+
+ssize_t
+arena_muzzy_decay_ms_default_get(void) {
+	return atomic_load_zd(&muzzy_decay_ms_default, ATOMIC_RELAXED);
+}
+
+bool
+arena_muzzy_decay_ms_default_set(ssize_t decay_ms) {
+	if (!decay_ms_valid(decay_ms)) {
+		return true;
+	}
+	atomic_store_zd(&muzzy_decay_ms_default, decay_ms, ATOMIC_RELAXED);
+	return false;
+}
+
+bool
+arena_retain_grow_limit_get_set(tsd_t *tsd, arena_t *arena, size_t *old_limit,
+    size_t *new_limit) {
+	assert(opt_retain);
+	return pac_retain_grow_limit_get_set(tsd_tsdn(tsd),
+	    &arena->pa_shard.pac, old_limit, new_limit);
+}
+
+unsigned
+arena_nthreads_get(arena_t *arena, bool internal) {
+	return atomic_load_u(&arena->nthreads[internal], ATOMIC_RELAXED);
+}
+
+void
+arena_nthreads_inc(arena_t *arena, bool internal) {
+	atomic_fetch_add_u(&arena->nthreads[internal], 1, ATOMIC_RELAXED);
+}
+
+void
+arena_nthreads_dec(arena_t *arena, bool internal) {
+	atomic_fetch_sub_u(&arena->nthreads[internal], 1, ATOMIC_RELAXED);
+}
+
+arena_t *
+arena_new(tsdn_t *tsdn, unsigned ind, const arena_config_t *config) {
+	arena_t *arena;
+	base_t *base;
+	unsigned i;
+
+	if (ind == 0) {
+		base = b0get();
+	} else {
+		base = base_new(tsdn, ind, config->extent_hooks,
+		    config->metadata_use_hooks);
+		if (base == NULL) {
+			return NULL;
+		}
+	}
+
+	size_t arena_size = sizeof(arena_t) + sizeof(bin_t) * nbins_total;
+	arena = (arena_t *)base_alloc(tsdn, base, arena_size, CACHELINE);
+	if (arena == NULL) {
+		goto label_error;
+	}
+
+	atomic_store_u(&arena->nthreads[0], 0, ATOMIC_RELAXED);
+	atomic_store_u(&arena->nthreads[1], 0, ATOMIC_RELAXED);
+	arena->last_thd = NULL;
+
+	if (config_stats) {
+		if (arena_stats_init(tsdn, &arena->stats)) {
+			goto label_error;
+		}
+
+		ql_new(&arena->tcache_ql);
+		ql_new(&arena->cache_bin_array_descriptor_ql);
+		if (malloc_mutex_init(&arena->tcache_ql_mtx, "tcache_ql",
+		    WITNESS_RANK_TCACHE_QL, malloc_mutex_rank_exclusive)) {
+			goto label_error;
+		}
+	}
+
+	atomic_store_u(&arena->dss_prec, (unsigned)extent_dss_prec_get(),
+	    ATOMIC_RELAXED);
+
+	edata_list_active_init(&arena->large);
+	if (malloc_mutex_init(&arena->large_mtx, "arena_large",
+	    WITNESS_RANK_ARENA_LARGE, malloc_mutex_rank_exclusive)) {
+		goto label_error;
+	}
+
+	nstime_t cur_time;
+	nstime_init_update(&cur_time);
+	if (pa_shard_init(tsdn, &arena->pa_shard, &arena_pa_central_global,
+	    &arena_emap_global, base, ind, &arena->stats.pa_shard_stats,
+	    LOCKEDINT_MTX(arena->stats.mtx), &cur_time, oversize_threshold,
+	    arena_dirty_decay_ms_default_get(),
+	    arena_muzzy_decay_ms_default_get())) {
+		goto label_error;
+	}
+
+	/* Initialize bins. */
+	atomic_store_u(&arena->binshard_next, 0, ATOMIC_RELEASE);
+	for (i = 0; i < nbins_total; i++) {
+		bool err = bin_init(&arena->bins[i]);
+		if (err) {
+			goto label_error;
+		}
+	}
+
+	arena->base = base;
+	/* Set arena before creating background threads. */
+	arena_set(ind, arena);
+	arena->ind = ind;
+
+	nstime_init_update(&arena->create_time);
+
+	/*
+	 * We turn on the HPA if set to.  There are two exceptions:
+	 * - Custom extent hooks (we should only return memory allocated from
+	 *   them in that case).
+	 * - Arena 0 initialization.  In this case, we're mid-bootstrapping, and
+	 *   so arena_hpa_global is not yet initialized.
+	 */
+	if (opt_hpa && ehooks_are_default(base_ehooks_get(base)) && ind != 0) {
+		hpa_shard_opts_t hpa_shard_opts = opt_hpa_opts;
+		hpa_shard_opts.deferral_allowed = background_thread_enabled();
+		if (pa_shard_enable_hpa(tsdn, &arena->pa_shard,
+		    &hpa_shard_opts, &opt_hpa_sec_opts)) {
+			goto label_error;
+		}
+	}
+
+	/* We don't support reentrancy for arena 0 bootstrapping. */
+	if (ind != 0) {
+		/*
+		 * If we're here, then arena 0 already exists, so bootstrapping
+		 * is done enough that we should have tsd.
+		 */
+		assert(!tsdn_null(tsdn));
+		pre_reentrancy(tsdn_tsd(tsdn), arena);
+		if (test_hooks_arena_new_hook) {
+			test_hooks_arena_new_hook();
+		}
+		post_reentrancy(tsdn_tsd(tsdn));
+	}
+
+	return arena;
+label_error:
+	if (ind != 0) {
+		base_delete(tsdn, base);
+	}
+	return NULL;
+}
+
+arena_t *
+arena_choose_huge(tsd_t *tsd) {
+	/* huge_arena_ind can be 0 during init (will use a0). */
+	if (huge_arena_ind == 0) {
+		assert(!malloc_initialized());
+	}
+
+	arena_t *huge_arena = arena_get(tsd_tsdn(tsd), huge_arena_ind, false);
+	if (huge_arena == NULL) {
+		/* Create the huge arena on demand. */
+		assert(huge_arena_ind != 0);
+		huge_arena = arena_get(tsd_tsdn(tsd), huge_arena_ind, true);
+		if (huge_arena == NULL) {
+			return NULL;
+		}
+		/*
+		 * Purge eagerly for huge allocations, because: 1) number of
+		 * huge allocations is usually small, which means ticker based
+		 * decay is not reliable; and 2) less immediate reuse is
+		 * expected for huge allocations.
+		 */
+		if (arena_dirty_decay_ms_default_get() > 0) {
+			arena_decay_ms_set(tsd_tsdn(tsd), huge_arena,
+			    extent_state_dirty, 0);
+		}
+		if (arena_muzzy_decay_ms_default_get() > 0) {
+			arena_decay_ms_set(tsd_tsdn(tsd), huge_arena,
+			    extent_state_muzzy, 0);
+		}
+	}
+
+	return huge_arena;
+}
+
+bool
+arena_init_huge(void) {
+	bool huge_enabled;
+
+	/* The threshold should be large size class. */
+	if (opt_oversize_threshold > SC_LARGE_MAXCLASS ||
+	    opt_oversize_threshold < SC_LARGE_MINCLASS) {
+		opt_oversize_threshold = 0;
+		oversize_threshold = SC_LARGE_MAXCLASS + PAGE;
+		huge_enabled = false;
+	} else {
+		/* Reserve the index for the huge arena. */
+		huge_arena_ind = narenas_total_get();
+		oversize_threshold = opt_oversize_threshold;
+		huge_enabled = true;
+	}
+
+	return huge_enabled;
+}
+
+bool
+arena_is_huge(unsigned arena_ind) {
+	if (huge_arena_ind == 0) {
+		return false;
+	}
+	return (arena_ind == huge_arena_ind);
+}
+
+bool
+arena_boot(sc_data_t *sc_data, base_t *base, bool hpa) {
+	arena_dirty_decay_ms_default_set(opt_dirty_decay_ms);
+	arena_muzzy_decay_ms_default_set(opt_muzzy_decay_ms);
+	for (unsigned i = 0; i < SC_NBINS; i++) {
+		sc_t *sc = &sc_data->sc[i];
+		div_init(&arena_binind_div_info[i],
+		    (1U << sc->lg_base) + (sc->ndelta << sc->lg_delta));
+	}
+
+	uint32_t cur_offset = (uint32_t)offsetof(arena_t, bins);
+	for (szind_t i = 0; i < SC_NBINS; i++) {
+		arena_bin_offsets[i] = cur_offset;
+		nbins_total += bin_infos[i].n_shards;
+		cur_offset += (uint32_t)(bin_infos[i].n_shards * sizeof(bin_t));
+	}
+	return pa_central_init(&arena_pa_central_global, base, hpa,
+	    &hpa_hooks_default);
+}
+
+void
+arena_prefork0(tsdn_t *tsdn, arena_t *arena) {
+	pa_shard_prefork0(tsdn, &arena->pa_shard);
+}
+
+void
+arena_prefork1(tsdn_t *tsdn, arena_t *arena) {
+	if (config_stats) {
+		malloc_mutex_prefork(tsdn, &arena->tcache_ql_mtx);
+	}
+}
+
+void
+arena_prefork2(tsdn_t *tsdn, arena_t *arena) {
+	pa_shard_prefork2(tsdn, &arena->pa_shard);
+}
+
+void
+arena_prefork3(tsdn_t *tsdn, arena_t *arena) {
+	pa_shard_prefork3(tsdn, &arena->pa_shard);
+}
+
+void
+arena_prefork4(tsdn_t *tsdn, arena_t *arena) {
+	pa_shard_prefork4(tsdn, &arena->pa_shard);
+}
+
+void
+arena_prefork5(tsdn_t *tsdn, arena_t *arena) {
+	pa_shard_prefork5(tsdn, &arena->pa_shard);
+}
+
+void
+arena_prefork6(tsdn_t *tsdn, arena_t *arena) {
+	base_prefork(tsdn, arena->base);
+}
+
+void
+arena_prefork7(tsdn_t *tsdn, arena_t *arena) {
+	malloc_mutex_prefork(tsdn, &arena->large_mtx);
+}
+
+void
+arena_prefork8(tsdn_t *tsdn, arena_t *arena) {
+	for (unsigned i = 0; i < nbins_total; i++) {
+		bin_prefork(tsdn, &arena->bins[i]);
+	}
+}
+
+void
+arena_postfork_parent(tsdn_t *tsdn, arena_t *arena) {
+	for (unsigned i = 0; i < nbins_total; i++) {
+		bin_postfork_parent(tsdn, &arena->bins[i]);
+	}
+
+	malloc_mutex_postfork_parent(tsdn, &arena->large_mtx);
+	base_postfork_parent(tsdn, arena->base);
+	pa_shard_postfork_parent(tsdn, &arena->pa_shard);
+	if (config_stats) {
+		malloc_mutex_postfork_parent(tsdn, &arena->tcache_ql_mtx);
+	}
+}
+
+void
+arena_postfork_child(tsdn_t *tsdn, arena_t *arena) {
+	atomic_store_u(&arena->nthreads[0], 0, ATOMIC_RELAXED);
+	atomic_store_u(&arena->nthreads[1], 0, ATOMIC_RELAXED);
+	if (tsd_arena_get(tsdn_tsd(tsdn)) == arena) {
+		arena_nthreads_inc(arena, false);
+	}
+	if (tsd_iarena_get(tsdn_tsd(tsdn)) == arena) {
+		arena_nthreads_inc(arena, true);
+	}
+	if (config_stats) {
+		ql_new(&arena->tcache_ql);
+		ql_new(&arena->cache_bin_array_descriptor_ql);
+		tcache_slow_t *tcache_slow = tcache_slow_get(tsdn_tsd(tsdn));
+		if (tcache_slow != NULL && tcache_slow->arena == arena) {
+			tcache_t *tcache = tcache_slow->tcache;
+			ql_elm_new(tcache_slow, link);
+			ql_tail_insert(&arena->tcache_ql, tcache_slow, link);
+			cache_bin_array_descriptor_init(
+			    &tcache_slow->cache_bin_array_descriptor,
+			    tcache->bins);
+			ql_tail_insert(&arena->cache_bin_array_descriptor_ql,
+			    &tcache_slow->cache_bin_array_descriptor, link);
+		}
+	}
+
+	for (unsigned i = 0; i < nbins_total; i++) {
+		bin_postfork_child(tsdn, &arena->bins[i]);
+	}
+
+	malloc_mutex_postfork_child(tsdn, &arena->large_mtx);
+	base_postfork_child(tsdn, arena->base);
+	pa_shard_postfork_child(tsdn, &arena->pa_shard);
+	if (config_stats) {
+		malloc_mutex_postfork_child(tsdn, &arena->tcache_ql_mtx);
+	}
+}
diff --git a/deps/jemalloc/src/background_thread.c b/deps/jemalloc/src/background_thread.c
new file mode 100644
index 0000000..3bb8d26
--- /dev/null
+++ b/deps/jemalloc/src/background_thread.c
@@ -0,0 +1,820 @@
+#include "jemalloc/internal/jemalloc_preamble.h"
+#include "jemalloc/internal/jemalloc_internal_includes.h"
+
+#include "jemalloc/internal/assert.h"
+
+JEMALLOC_DIAGNOSTIC_DISABLE_SPURIOUS
+
+/******************************************************************************/
+/* Data. */
+
+/* This option should be opt-in only. */
+#define BACKGROUND_THREAD_DEFAULT false
+/* Read-only after initialization. */
+bool opt_background_thread = BACKGROUND_THREAD_DEFAULT;
+size_t opt_max_background_threads = MAX_BACKGROUND_THREAD_LIMIT + 1;
+
+/* Used for thread creation, termination and stats. */
+malloc_mutex_t background_thread_lock;
+/* Indicates global state.  Atomic because decay reads this w/o locking. */
+atomic_b_t background_thread_enabled_state;
+size_t n_background_threads;
+size_t max_background_threads;
+/* Thread info per-index. */
+background_thread_info_t *background_thread_info;
+
+/******************************************************************************/
+
+#ifdef JEMALLOC_PTHREAD_CREATE_WRAPPER
+
+static int (*pthread_create_fptr)(pthread_t *__restrict, const pthread_attr_t *,
+    void *(*)(void *), void *__restrict);
+
+static void
+pthread_create_wrapper_init(void) {
+#ifdef JEMALLOC_LAZY_LOCK
+	if (!isthreaded) {
+		isthreaded = true;
+	}
+#endif
+}
+
+int
+pthread_create_wrapper(pthread_t *__restrict thread, const pthread_attr_t *attr,
+    void *(*start_routine)(void *), void *__restrict arg) {
+	pthread_create_wrapper_init();
+
+	return pthread_create_fptr(thread, attr, start_routine, arg);
+}
+#endif /* JEMALLOC_PTHREAD_CREATE_WRAPPER */
+
+#ifndef JEMALLOC_BACKGROUND_THREAD
+#define NOT_REACHED { not_reached(); }
+bool background_thread_create(tsd_t *tsd, unsigned arena_ind) NOT_REACHED
+bool background_threads_enable(tsd_t *tsd) NOT_REACHED
+bool background_threads_disable(tsd_t *tsd) NOT_REACHED
+bool background_thread_is_started(background_thread_info_t *info) NOT_REACHED
+void background_thread_wakeup_early(background_thread_info_t *info,
+    nstime_t *remaining_sleep) NOT_REACHED
+void background_thread_prefork0(tsdn_t *tsdn) NOT_REACHED
+void background_thread_prefork1(tsdn_t *tsdn) NOT_REACHED
+void background_thread_postfork_parent(tsdn_t *tsdn) NOT_REACHED
+void background_thread_postfork_child(tsdn_t *tsdn) NOT_REACHED
+bool background_thread_stats_read(tsdn_t *tsdn,
+    background_thread_stats_t *stats) NOT_REACHED
+void background_thread_ctl_init(tsdn_t *tsdn) NOT_REACHED
+#undef NOT_REACHED
+#else
+
+static bool background_thread_enabled_at_fork;
+
+static void
+background_thread_info_init(tsdn_t *tsdn, background_thread_info_t *info) {
+	background_thread_wakeup_time_set(tsdn, info, 0);
+	info->npages_to_purge_new = 0;
+	if (config_stats) {
+		info->tot_n_runs = 0;
+		nstime_init_zero(&info->tot_sleep_time);
+	}
+}
+
+static inline bool
+set_current_thread_affinity(int cpu) {
+#if defined(JEMALLOC_HAVE_SCHED_SETAFFINITY)
+	cpu_set_t cpuset;
+#else
+#  ifndef __NetBSD__
+	cpuset_t cpuset;
+#  else
+	cpuset_t *cpuset;
+#  endif
+#endif
+
+#ifndef __NetBSD__
+	CPU_ZERO(&cpuset);
+	CPU_SET(cpu, &cpuset);
+#else
+	cpuset = cpuset_create();
+#endif
+
+#if defined(JEMALLOC_HAVE_SCHED_SETAFFINITY)
+	return (sched_setaffinity(0, sizeof(cpu_set_t), &cpuset) != 0);
+#else
+#  ifndef __NetBSD__
+	int ret = pthread_setaffinity_np(pthread_self(), sizeof(cpuset_t),
+	    &cpuset);
+#  else
+	int ret = pthread_setaffinity_np(pthread_self(), cpuset_size(cpuset),
+	    cpuset);
+	cpuset_destroy(cpuset);
+#  endif
+	return ret != 0;
+#endif
+}
+
+#define BILLION UINT64_C(1000000000)
+/* Minimal sleep interval 100 ms. */
+#define BACKGROUND_THREAD_MIN_INTERVAL_NS (BILLION / 10)
+
+static void
+background_thread_sleep(tsdn_t *tsdn, background_thread_info_t *info,
+    uint64_t interval) {
+	if (config_stats) {
+		info->tot_n_runs++;
+	}
+	info->npages_to_purge_new = 0;
+
+	struct timeval tv;
+	/* Specific clock required by timedwait. */
+	gettimeofday(&tv, NULL);
+	nstime_t before_sleep;
+	nstime_init2(&before_sleep, tv.tv_sec, tv.tv_usec * 1000);
+
+	int ret;
+	if (interval == BACKGROUND_THREAD_INDEFINITE_SLEEP) {
+		background_thread_wakeup_time_set(tsdn, info,
+		    BACKGROUND_THREAD_INDEFINITE_SLEEP);
+		ret = pthread_cond_wait(&info->cond, &info->mtx.lock);
+		assert(ret == 0);
+	} else {
+		assert(interval >= BACKGROUND_THREAD_MIN_INTERVAL_NS &&
+		    interval <= BACKGROUND_THREAD_INDEFINITE_SLEEP);
+		/* We need malloc clock (can be different from tv). */
+		nstime_t next_wakeup;
+		nstime_init_update(&next_wakeup);
+		nstime_iadd(&next_wakeup, interval);
+		assert(nstime_ns(&next_wakeup) <
+		    BACKGROUND_THREAD_INDEFINITE_SLEEP);
+		background_thread_wakeup_time_set(tsdn, info,
+		    nstime_ns(&next_wakeup));
+
+		nstime_t ts_wakeup;
+		nstime_copy(&ts_wakeup, &before_sleep);
+		nstime_iadd(&ts_wakeup, interval);
+		struct timespec ts;
+		ts.tv_sec = (size_t)nstime_sec(&ts_wakeup);
+		ts.tv_nsec = (size_t)nstime_nsec(&ts_wakeup);
+
+		assert(!background_thread_indefinite_sleep(info));
+		ret = pthread_cond_timedwait(&info->cond, &info->mtx.lock, &ts);
+		assert(ret == ETIMEDOUT || ret == 0);
+	}
+	if (config_stats) {
+		gettimeofday(&tv, NULL);
+		nstime_t after_sleep;
+		nstime_init2(&after_sleep, tv.tv_sec, tv.tv_usec * 1000);
+		if (nstime_compare(&after_sleep, &before_sleep) > 0) {
+			nstime_subtract(&after_sleep, &before_sleep);
+			nstime_add(&info->tot_sleep_time, &after_sleep);
+		}
+	}
+}
+
+static bool
+background_thread_pause_check(tsdn_t *tsdn, background_thread_info_t *info) {
+	if (unlikely(info->state == background_thread_paused)) {
+		malloc_mutex_unlock(tsdn, &info->mtx);
+		/* Wait on global lock to update status. */
+		malloc_mutex_lock(tsdn, &background_thread_lock);
+		malloc_mutex_unlock(tsdn, &background_thread_lock);
+		malloc_mutex_lock(tsdn, &info->mtx);
+		return true;
+	}
+
+	return false;
+}
+
+static inline void
+background_work_sleep_once(tsdn_t *tsdn, background_thread_info_t *info,
+    unsigned ind) {
+	uint64_t ns_until_deferred = BACKGROUND_THREAD_DEFERRED_MAX;
+	unsigned narenas = narenas_total_get();
+	bool slept_indefinitely = background_thread_indefinite_sleep(info);
+
+	for (unsigned i = ind; i < narenas; i += max_background_threads) {
+		arena_t *arena = arena_get(tsdn, i, false);
+		if (!arena) {
+			continue;
+		}
+		/*
+		 * If thread was woken up from the indefinite sleep, don't
+		 * do the work instantly, but rather check when the deferred
+		 * work that caused this thread to wake up is scheduled for.
+		 */
+		if (!slept_indefinitely) {
+			arena_do_deferred_work(tsdn, arena);
+		}
+		if (ns_until_deferred <= BACKGROUND_THREAD_MIN_INTERVAL_NS) {
+			/* Min interval will be used. */
+			continue;
+		}
+		uint64_t ns_arena_deferred = pa_shard_time_until_deferred_work(
+		    tsdn, &arena->pa_shard);
+		if (ns_arena_deferred < ns_until_deferred) {
+			ns_until_deferred = ns_arena_deferred;
+		}
+	}
+
+	uint64_t sleep_ns;
+	if (ns_until_deferred == BACKGROUND_THREAD_DEFERRED_MAX) {
+		sleep_ns = BACKGROUND_THREAD_INDEFINITE_SLEEP;
+	} else {
+		sleep_ns =
+		    (ns_until_deferred < BACKGROUND_THREAD_MIN_INTERVAL_NS)
+		    ? BACKGROUND_THREAD_MIN_INTERVAL_NS
+		    : ns_until_deferred;
+
+	}
+
+	background_thread_sleep(tsdn, info, sleep_ns);
+}
+
+static bool
+background_threads_disable_single(tsd_t *tsd, background_thread_info_t *info) {
+	if (info == &background_thread_info[0]) {
+		malloc_mutex_assert_owner(tsd_tsdn(tsd),
+		    &background_thread_lock);
+	} else {
+		malloc_mutex_assert_not_owner(tsd_tsdn(tsd),
+		    &background_thread_lock);
+	}
+
+	pre_reentrancy(tsd, NULL);
+	malloc_mutex_lock(tsd_tsdn(tsd), &info->mtx);
+	bool has_thread;
+	assert(info->state != background_thread_paused);
+	if (info->state == background_thread_started) {
+		has_thread = true;
+		info->state = background_thread_stopped;
+		pthread_cond_signal(&info->cond);
+	} else {
+		has_thread = false;
+	}
+	malloc_mutex_unlock(tsd_tsdn(tsd), &info->mtx);
+
+	if (!has_thread) {
+		post_reentrancy(tsd);
+		return false;
+	}
+	void *ret;
+	if (pthread_join(info->thread, &ret)) {
+		post_reentrancy(tsd);
+		return true;
+	}
+	assert(ret == NULL);
+	n_background_threads--;
+	post_reentrancy(tsd);
+
+	return false;
+}
+
+static void *background_thread_entry(void *ind_arg);
+
+static int
+background_thread_create_signals_masked(pthread_t *thread,
+    const pthread_attr_t *attr, void *(*start_routine)(void *), void *arg) {
+	/*
+	 * Mask signals during thread creation so that the thread inherits
+	 * an empty signal set.
+	 */
+	sigset_t set;
+	sigfillset(&set);
+	sigset_t oldset;
+	int mask_err = pthread_sigmask(SIG_SETMASK, &set, &oldset);
+	if (mask_err != 0) {
+		return mask_err;
+	}
+	int create_err = pthread_create_wrapper(thread, attr, start_routine,
+	    arg);
+	/*
+	 * Restore the signal mask.  Failure to restore the signal mask here
+	 * changes program behavior.
+	 */
+	int restore_err = pthread_sigmask(SIG_SETMASK, &oldset, NULL);
+	if (restore_err != 0) {
+		malloc_printf("<jemalloc>: background thread creation "
+		    "failed (%d), and signal mask restoration failed "
+		    "(%d)\n", create_err, restore_err);
+		if (opt_abort) {
+			abort();
+		}
+	}
+	return create_err;
+}
+
+static bool
+check_background_thread_creation(tsd_t *tsd, unsigned *n_created,
+    bool *created_threads) {
+	bool ret = false;
+	if (likely(*n_created == n_background_threads)) {
+		return ret;
+	}
+
+	tsdn_t *tsdn = tsd_tsdn(tsd);
+	malloc_mutex_unlock(tsdn, &background_thread_info[0].mtx);
+	for (unsigned i = 1; i < max_background_threads; i++) {
+		if (created_threads[i]) {
+			continue;
+		}
+		background_thread_info_t *info = &background_thread_info[i];
+		malloc_mutex_lock(tsdn, &info->mtx);
+		/*
+		 * In case of the background_thread_paused state because of
+		 * arena reset, delay the creation.
+		 */
+		bool create = (info->state == background_thread_started);
+		malloc_mutex_unlock(tsdn, &info->mtx);
+		if (!create) {
+			continue;
+		}
+
+		pre_reentrancy(tsd, NULL);
+		int err = background_thread_create_signals_masked(&info->thread,
+		    NULL, background_thread_entry, (void *)(uintptr_t)i);
+		post_reentrancy(tsd);
+
+		if (err == 0) {
+			(*n_created)++;
+			created_threads[i] = true;
+		} else {
+			malloc_printf("<jemalloc>: background thread "
+			    "creation failed (%d)\n", err);
+			if (opt_abort) {
+				abort();
+			}
+		}
+		/* Return to restart the loop since we unlocked. */
+		ret = true;
+		break;
+	}
+	malloc_mutex_lock(tsdn, &background_thread_info[0].mtx);
+
+	return ret;
+}
+
+static void
+background_thread0_work(tsd_t *tsd) {
+	/* Thread0 is also responsible for launching / terminating threads. */
+	VARIABLE_ARRAY(bool, created_threads, max_background_threads);
+	unsigned i;
+	for (i = 1; i < max_background_threads; i++) {
+		created_threads[i] = false;
+	}
+	/* Start working, and create more threads when asked. */
+	unsigned n_created = 1;
+	while (background_thread_info[0].state != background_thread_stopped) {
+		if (background_thread_pause_check(tsd_tsdn(tsd),
+		    &background_thread_info[0])) {
+			continue;
+		}
+		if (check_background_thread_creation(tsd, &n_created,
+		    (bool *)&created_threads)) {
+			continue;
+		}
+		background_work_sleep_once(tsd_tsdn(tsd),
+		    &background_thread_info[0], 0);
+	}
+
+	/*
+	 * Shut down other threads at exit.  Note that the ctl thread is holding
+	 * the global background_thread mutex (and is waiting) for us.
+	 */
+	assert(!background_thread_enabled());
+	for (i = 1; i < max_background_threads; i++) {
+		background_thread_info_t *info = &background_thread_info[i];
+		assert(info->state != background_thread_paused);
+		if (created_threads[i]) {
+			background_threads_disable_single(tsd, info);
+		} else {
+			malloc_mutex_lock(tsd_tsdn(tsd), &info->mtx);
+			if (info->state != background_thread_stopped) {
+				/* The thread was not created. */
+				assert(info->state ==
+				    background_thread_started);
+				n_background_threads--;
+				info->state = background_thread_stopped;
+			}
+			malloc_mutex_unlock(tsd_tsdn(tsd), &info->mtx);
+		}
+	}
+	background_thread_info[0].state = background_thread_stopped;
+	assert(n_background_threads == 1);
+}
+
+static void
+background_work(tsd_t *tsd, unsigned ind) {
+	background_thread_info_t *info = &background_thread_info[ind];
+
+	malloc_mutex_lock(tsd_tsdn(tsd), &info->mtx);
+	background_thread_wakeup_time_set(tsd_tsdn(tsd), info,
+	    BACKGROUND_THREAD_INDEFINITE_SLEEP);
+	if (ind == 0) {
+		background_thread0_work(tsd);
+	} else {
+		while (info->state != background_thread_stopped) {
+			if (background_thread_pause_check(tsd_tsdn(tsd),
+			    info)) {
+				continue;
+			}
+			background_work_sleep_once(tsd_tsdn(tsd), info, ind);
+		}
+	}
+	assert(info->state == background_thread_stopped);
+	background_thread_wakeup_time_set(tsd_tsdn(tsd), info, 0);
+	malloc_mutex_unlock(tsd_tsdn(tsd), &info->mtx);
+}
+
+static void *
+background_thread_entry(void *ind_arg) {
+	unsigned thread_ind = (unsigned)(uintptr_t)ind_arg;
+	assert(thread_ind < max_background_threads);
+#ifdef JEMALLOC_HAVE_PTHREAD_SETNAME_NP
+	pthread_setname_np(pthread_self(), "jemalloc_bg_thd");
+#elif defined(__FreeBSD__) || defined(__DragonFly__)
+	pthread_set_name_np(pthread_self(), "jemalloc_bg_thd");
+#endif
+	if (opt_percpu_arena != percpu_arena_disabled) {
+		set_current_thread_affinity((int)thread_ind);
+	}
+	/*
+	 * Start periodic background work.  We use internal tsd which avoids
+	 * side effects, for example triggering new arena creation (which in
+	 * turn triggers another background thread creation).
+	 */
+	background_work(tsd_internal_fetch(), thread_ind);
+	assert(pthread_equal(pthread_self(),
+	    background_thread_info[thread_ind].thread));
+
+	return NULL;
+}
+
+static void
+background_thread_init(tsd_t *tsd, background_thread_info_t *info) {
+	malloc_mutex_assert_owner(tsd_tsdn(tsd), &background_thread_lock);
+	info->state = background_thread_started;
+	background_thread_info_init(tsd_tsdn(tsd), info);
+	n_background_threads++;
+}
+
+static bool
+background_thread_create_locked(tsd_t *tsd, unsigned arena_ind) {
+	assert(have_background_thread);
+	malloc_mutex_assert_owner(tsd_tsdn(tsd), &background_thread_lock);
+
+	/* We create at most NCPUs threads. */
+	size_t thread_ind = arena_ind % max_background_threads;
+	background_thread_info_t *info = &background_thread_info[thread_ind];
+
+	bool need_new_thread;
+	malloc_mutex_lock(tsd_tsdn(tsd), &info->mtx);
+	need_new_thread = background_thread_enabled() &&
+	    (info->state == background_thread_stopped);
+	if (need_new_thread) {
+		background_thread_init(tsd, info);
+	}
+	malloc_mutex_unlock(tsd_tsdn(tsd), &info->mtx);
+	if (!need_new_thread) {
+		return false;
+	}
+	if (arena_ind != 0) {
+		/* Threads are created asynchronously by Thread 0. */
+		background_thread_info_t *t0 = &background_thread_info[0];
+		malloc_mutex_lock(tsd_tsdn(tsd), &t0->mtx);
+		assert(t0->state == background_thread_started);
+		pthread_cond_signal(&t0->cond);
+		malloc_mutex_unlock(tsd_tsdn(tsd), &t0->mtx);
+
+		return false;
+	}
+
+	pre_reentrancy(tsd, NULL);
+	/*
+	 * To avoid complications (besides reentrancy), create internal
+	 * background threads with the underlying pthread_create.
+	 */
+	int err = background_thread_create_signals_masked(&info->thread, NULL,
+	    background_thread_entry, (void *)thread_ind);
+	post_reentrancy(tsd);
+
+	if (err != 0) {
+		malloc_printf("<jemalloc>: arena 0 background thread creation "
+		    "failed (%d)\n", err);
+		malloc_mutex_lock(tsd_tsdn(tsd), &info->mtx);
+		info->state = background_thread_stopped;
+		n_background_threads--;
+		malloc_mutex_unlock(tsd_tsdn(tsd), &info->mtx);
+
+		return true;
+	}
+
+	return false;
+}
+
+/* Create a new background thread if needed. */
+bool
+background_thread_create(tsd_t *tsd, unsigned arena_ind) {
+	assert(have_background_thread);
+
+	bool ret;
+	malloc_mutex_lock(tsd_tsdn(tsd), &background_thread_lock);
+	ret = background_thread_create_locked(tsd, arena_ind);
+	malloc_mutex_unlock(tsd_tsdn(tsd), &background_thread_lock);
+
+	return ret;
+}
+
+bool
+background_threads_enable(tsd_t *tsd) {
+	assert(n_background_threads == 0);
+	assert(background_thread_enabled());
+	malloc_mutex_assert_owner(tsd_tsdn(tsd), &background_thread_lock);
+
+	VARIABLE_ARRAY(bool, marked, max_background_threads);
+	unsigned nmarked;
+	for (unsigned i = 0; i < max_background_threads; i++) {
+		marked[i] = false;
+	}
+	nmarked = 0;
+	/* Thread 0 is required and created at the end. */
+	marked[0] = true;
+	/* Mark the threads we need to create for thread 0. */
+	unsigned narenas = narenas_total_get();
+	for (unsigned i = 1; i < narenas; i++) {
+		if (marked[i % max_background_threads] ||
+		    arena_get(tsd_tsdn(tsd), i, false) == NULL) {
+			continue;
+		}
+		background_thread_info_t *info = &background_thread_info[
+		    i % max_background_threads];
+		malloc_mutex_lock(tsd_tsdn(tsd), &info->mtx);
+		assert(info->state == background_thread_stopped);
+		background_thread_init(tsd, info);
+		malloc_mutex_unlock(tsd_tsdn(tsd), &info->mtx);
+		marked[i % max_background_threads] = true;
+		if (++nmarked == max_background_threads) {
+			break;
+		}
+	}
+
+	bool err = background_thread_create_locked(tsd, 0);
+	if (err) {
+		return true;
+	}
+	for (unsigned i = 0; i < narenas; i++) {
+		arena_t *arena = arena_get(tsd_tsdn(tsd), i, false);
+		if (arena != NULL) {
+			pa_shard_set_deferral_allowed(tsd_tsdn(tsd),
+			    &arena->pa_shard, true);
+		}
+	}
+	return false;
+}
+
+bool
+background_threads_disable(tsd_t *tsd) {
+	assert(!background_thread_enabled());
+	malloc_mutex_assert_owner(tsd_tsdn(tsd), &background_thread_lock);
+
+	/* Thread 0 will be responsible for terminating other threads. */
+	if (background_threads_disable_single(tsd,
+	    &background_thread_info[0])) {
+		return true;
+	}
+	assert(n_background_threads == 0);
+	unsigned narenas = narenas_total_get();
+	for (unsigned i = 0; i < narenas; i++) {
+		arena_t *arena = arena_get(tsd_tsdn(tsd), i, false);
+		if (arena != NULL) {
+			pa_shard_set_deferral_allowed(tsd_tsdn(tsd),
+			    &arena->pa_shard, false);
+		}
+	}
+
+	return false;
+}
+
+bool
+background_thread_is_started(background_thread_info_t *info) {
+	return info->state == background_thread_started;
+}
+
+void
+background_thread_wakeup_early(background_thread_info_t *info,
+    nstime_t *remaining_sleep) {
+	/*
+	 * This is an optimization to increase batching. At this point
+	 * we know that background thread wakes up soon, so the time to cache
+	 * the just freed memory is bounded and low.
+	 */
+	if (remaining_sleep != NULL && nstime_ns(remaining_sleep) <
+	    BACKGROUND_THREAD_MIN_INTERVAL_NS) {
+		return;
+	}
+	pthread_cond_signal(&info->cond);
+}
+
+void
+background_thread_prefork0(tsdn_t *tsdn) {
+	malloc_mutex_prefork(tsdn, &background_thread_lock);
+	background_thread_enabled_at_fork = background_thread_enabled();
+}
+
+void
+background_thread_prefork1(tsdn_t *tsdn) {
+	for (unsigned i = 0; i < max_background_threads; i++) {
+		malloc_mutex_prefork(tsdn, &background_thread_info[i].mtx);
+	}
+}
+
+void
+background_thread_postfork_parent(tsdn_t *tsdn) {
+	for (unsigned i = 0; i < max_background_threads; i++) {
+		malloc_mutex_postfork_parent(tsdn,
+		    &background_thread_info[i].mtx);
+	}
+	malloc_mutex_postfork_parent(tsdn, &background_thread_lock);
+}
+
+void
+background_thread_postfork_child(tsdn_t *tsdn) {
+	for (unsigned i = 0; i < max_background_threads; i++) {
+		malloc_mutex_postfork_child(tsdn,
+		    &background_thread_info[i].mtx);
+	}
+	malloc_mutex_postfork_child(tsdn, &background_thread_lock);
+	if (!background_thread_enabled_at_fork) {
+		return;
+	}
+
+	/* Clear background_thread state (reset to disabled for child). */
+	malloc_mutex_lock(tsdn, &background_thread_lock);
+	n_background_threads = 0;
+	background_thread_enabled_set(tsdn, false);
+	for (unsigned i = 0; i < max_background_threads; i++) {
+		background_thread_info_t *info = &background_thread_info[i];
+		malloc_mutex_lock(tsdn, &info->mtx);
+		info->state = background_thread_stopped;
+		int ret = pthread_cond_init(&info->cond, NULL);
+		assert(ret == 0);
+		background_thread_info_init(tsdn, info);
+		malloc_mutex_unlock(tsdn, &info->mtx);
+	}
+	malloc_mutex_unlock(tsdn, &background_thread_lock);
+}
+
+bool
+background_thread_stats_read(tsdn_t *tsdn, background_thread_stats_t *stats) {
+	assert(config_stats);
+	malloc_mutex_lock(tsdn, &background_thread_lock);
+	if (!background_thread_enabled()) {
+		malloc_mutex_unlock(tsdn, &background_thread_lock);
+		return true;
+	}
+
+	nstime_init_zero(&stats->run_interval);
+	memset(&stats->max_counter_per_bg_thd, 0, sizeof(mutex_prof_data_t));
+
+	uint64_t num_runs = 0;
+	stats->num_threads = n_background_threads;
+	for (unsigned i = 0; i < max_background_threads; i++) {
+		background_thread_info_t *info = &background_thread_info[i];
+		if (malloc_mutex_trylock(tsdn, &info->mtx)) {
+			/*
+			 * Each background thread run may take a long time;
+			 * avoid waiting on the stats if the thread is active.
+			 */
+			continue;
+		}
+		if (info->state != background_thread_stopped) {
+			num_runs += info->tot_n_runs;
+			nstime_add(&stats->run_interval, &info->tot_sleep_time);
+			malloc_mutex_prof_max_update(tsdn,
+			    &stats->max_counter_per_bg_thd, &info->mtx);
+		}
+		malloc_mutex_unlock(tsdn, &info->mtx);
+	}
+	stats->num_runs = num_runs;
+	if (num_runs > 0) {
+		nstime_idivide(&stats->run_interval, num_runs);
+	}
+	malloc_mutex_unlock(tsdn, &background_thread_lock);
+
+	return false;
+}
+
+#undef BACKGROUND_THREAD_NPAGES_THRESHOLD
+#undef BILLION
+#undef BACKGROUND_THREAD_MIN_INTERVAL_NS
+
+#ifdef JEMALLOC_HAVE_DLSYM
+#include <dlfcn.h>
+#endif
+
+static bool
+pthread_create_fptr_init(void) {
+	if (pthread_create_fptr != NULL) {
+		return false;
+	}
+	/*
+	 * Try the next symbol first, because 1) when use lazy_lock we have a
+	 * wrapper for pthread_create; and 2) application may define its own
+	 * wrapper as well (and can call malloc within the wrapper).
+	 */
+#ifdef JEMALLOC_HAVE_DLSYM
+	pthread_create_fptr = dlsym(RTLD_NEXT, "pthread_create");
+#else
+	pthread_create_fptr = NULL;
+#endif
+	if (pthread_create_fptr == NULL) {
+		if (config_lazy_lock) {
+			malloc_write("<jemalloc>: Error in dlsym(RTLD_NEXT, "
+			    "\"pthread_create\")\n");
+			abort();
+		} else {
+			/* Fall back to the default symbol. */
+			pthread_create_fptr = pthread_create;
+		}
+	}
+
+	return false;
+}
+
+/*
+ * When lazy lock is enabled, we need to make sure setting isthreaded before
+ * taking any background_thread locks.  This is called early in ctl (instead of
+ * wait for the pthread_create calls to trigger) because the mutex is required
+ * before creating background threads.
+ */
+void
+background_thread_ctl_init(tsdn_t *tsdn) {
+	malloc_mutex_assert_not_owner(tsdn, &background_thread_lock);
+#ifdef JEMALLOC_PTHREAD_CREATE_WRAPPER
+	pthread_create_fptr_init();
+	pthread_create_wrapper_init();
+#endif
+}
+
+#endif /* defined(JEMALLOC_BACKGROUND_THREAD) */
+
+bool
+background_thread_boot0(void) {
+	if (!have_background_thread && opt_background_thread) {
+		malloc_printf("<jemalloc>: option background_thread currently "
+		    "supports pthread only\n");
+		return true;
+	}
+#ifdef JEMALLOC_PTHREAD_CREATE_WRAPPER
+	if ((config_lazy_lock || opt_background_thread) &&
+	    pthread_create_fptr_init()) {
+		return true;
+	}
+#endif
+	return false;
+}
+
+bool
+background_thread_boot1(tsdn_t *tsdn, base_t *base) {
+#ifdef JEMALLOC_BACKGROUND_THREAD
+	assert(have_background_thread);
+	assert(narenas_total_get() > 0);
+
+	if (opt_max_background_threads > MAX_BACKGROUND_THREAD_LIMIT) {
+		opt_max_background_threads = DEFAULT_NUM_BACKGROUND_THREAD;
+	}
+	max_background_threads = opt_max_background_threads;
+
+	background_thread_enabled_set(tsdn, opt_background_thread);
+	if (malloc_mutex_init(&background_thread_lock,
+	    "background_thread_global",
+	    WITNESS_RANK_BACKGROUND_THREAD_GLOBAL,
+	    malloc_mutex_rank_exclusive)) {
+		return true;
+	}
+
+	background_thread_info = (background_thread_info_t *)base_alloc(tsdn,
+	    base, opt_max_background_threads *
+	    sizeof(background_thread_info_t), CACHELINE);
+	if (background_thread_info == NULL) {
+		return true;
+	}
+
+	for (unsigned i = 0; i < max_background_threads; i++) {
+		background_thread_info_t *info = &background_thread_info[i];
+		/* Thread mutex is rank_inclusive because of thread0. */
+		if (malloc_mutex_init(&info->mtx, "background_thread",
+		    WITNESS_RANK_BACKGROUND_THREAD,
+		    malloc_mutex_address_ordered)) {
+			return true;
+		}
+		if (pthread_cond_init(&info->cond, NULL)) {
+			return true;
+		}
+		malloc_mutex_lock(tsdn, &info->mtx);
+		info->state = background_thread_stopped;
+		background_thread_info_init(tsdn, info);
+		malloc_mutex_unlock(tsdn, &info->mtx);
+	}
+#endif
+
+	return false;
+}
diff --git a/deps/jemalloc/src/base.c b/deps/jemalloc/src/base.c
new file mode 100644
index 0000000..7f4d675
--- /dev/null
+++ b/deps/jemalloc/src/base.c
@@ -0,0 +1,529 @@
+#include "jemalloc/internal/jemalloc_preamble.h"
+#include "jemalloc/internal/jemalloc_internal_includes.h"
+
+#include "jemalloc/internal/assert.h"
+#include "jemalloc/internal/extent_mmap.h"
+#include "jemalloc/internal/mutex.h"
+#include "jemalloc/internal/sz.h"
+
+/*
+ * In auto mode, arenas switch to huge pages for the base allocator on the
+ * second base block.  a0 switches to thp on the 5th block (after 20 megabytes
+ * of metadata), since more metadata (e.g. rtree nodes) come from a0's base.
+ */
+
+#define BASE_AUTO_THP_THRESHOLD    2
+#define BASE_AUTO_THP_THRESHOLD_A0 5
+
+/******************************************************************************/
+/* Data. */
+
+static base_t *b0;
+
+metadata_thp_mode_t opt_metadata_thp = METADATA_THP_DEFAULT;
+
+const char *metadata_thp_mode_names[] = {
+	"disabled",
+	"auto",
+	"always"
+};
+
+/******************************************************************************/
+
+static inline bool
+metadata_thp_madvise(void) {
+	return (metadata_thp_enabled() &&
+	    (init_system_thp_mode == thp_mode_default));
+}
+
+static void *
+base_map(tsdn_t *tsdn, ehooks_t *ehooks, unsigned ind, size_t size) {
+	void *addr;
+	bool zero = true;
+	bool commit = true;
+
+	/* Use huge page sizes and alignment regardless of opt_metadata_thp. */
+	assert(size == HUGEPAGE_CEILING(size));
+	size_t alignment = HUGEPAGE;
+	if (ehooks_are_default(ehooks)) {
+		addr = extent_alloc_mmap(NULL, size, alignment, &zero, &commit);
+		if (have_madvise_huge && addr) {
+			pages_set_thp_state(addr, size);
+		}
+	} else {
+		addr = ehooks_alloc(tsdn, ehooks, NULL, size, alignment, &zero,
+		    &commit);
+	}
+
+	return addr;
+}
+
+static void
+base_unmap(tsdn_t *tsdn, ehooks_t *ehooks, unsigned ind, void *addr,
+    size_t size) {
+	/*
+	 * Cascade through dalloc, decommit, purge_forced, and purge_lazy,
+	 * stopping at first success.  This cascade is performed for consistency
+	 * with the cascade in extent_dalloc_wrapper() because an application's
+	 * custom hooks may not support e.g. dalloc.  This function is only ever
+	 * called as a side effect of arena destruction, so although it might
+	 * seem pointless to do anything besides dalloc here, the application
+	 * may in fact want the end state of all associated virtual memory to be
+	 * in some consistent-but-allocated state.
+	 */
+	if (ehooks_are_default(ehooks)) {
+		if (!extent_dalloc_mmap(addr, size)) {
+			goto label_done;
+		}
+		if (!pages_decommit(addr, size)) {
+			goto label_done;
+		}
+		if (!pages_purge_forced(addr, size)) {
+			goto label_done;
+		}
+		if (!pages_purge_lazy(addr, size)) {
+			goto label_done;
+		}
+		/* Nothing worked.  This should never happen. */
+		not_reached();
+	} else {
+		if (!ehooks_dalloc(tsdn, ehooks, addr, size, true)) {
+			goto label_done;
+		}
+		if (!ehooks_decommit(tsdn, ehooks, addr, size, 0, size)) {
+			goto label_done;
+		}
+		if (!ehooks_purge_forced(tsdn, ehooks, addr, size, 0, size)) {
+			goto label_done;
+		}
+		if (!ehooks_purge_lazy(tsdn, ehooks, addr, size, 0, size)) {
+			goto label_done;
+		}
+		/* Nothing worked.  That's the application's problem. */
+	}
+label_done:
+	if (metadata_thp_madvise()) {
+		/* Set NOHUGEPAGE after unmap to avoid kernel defrag. */
+		assert(((uintptr_t)addr & HUGEPAGE_MASK) == 0 &&
+		    (size & HUGEPAGE_MASK) == 0);
+		pages_nohuge(addr, size);
+	}
+}
+
+static void
+base_edata_init(size_t *extent_sn_next, edata_t *edata, void *addr,
+    size_t size) {
+	size_t sn;
+
+	sn = *extent_sn_next;
+	(*extent_sn_next)++;
+
+	edata_binit(edata, addr, size, sn);
+}
+
+static size_t
+base_get_num_blocks(base_t *base, bool with_new_block) {
+	base_block_t *b = base->blocks;
+	assert(b != NULL);
+
+	size_t n_blocks = with_new_block ? 2 : 1;
+	while (b->next != NULL) {
+		n_blocks++;
+		b = b->next;
+	}
+
+	return n_blocks;
+}
+
+static void
+base_auto_thp_switch(tsdn_t *tsdn, base_t *base) {
+	assert(opt_metadata_thp == metadata_thp_auto);
+	malloc_mutex_assert_owner(tsdn, &base->mtx);
+	if (base->auto_thp_switched) {
+		return;
+	}
+	/* Called when adding a new block. */
+	bool should_switch;
+	if (base_ind_get(base) != 0) {
+		should_switch = (base_get_num_blocks(base, true) ==
+		    BASE_AUTO_THP_THRESHOLD);
+	} else {
+		should_switch = (base_get_num_blocks(base, true) ==
+		    BASE_AUTO_THP_THRESHOLD_A0);
+	}
+	if (!should_switch) {
+		return;
+	}
+
+	base->auto_thp_switched = true;
+	assert(!config_stats || base->n_thp == 0);
+	/* Make the initial blocks THP lazily. */
+	base_block_t *block = base->blocks;
+	while (block != NULL) {
+		assert((block->size & HUGEPAGE_MASK) == 0);
+		pages_huge(block, block->size);
+		if (config_stats) {
+			base->n_thp += HUGEPAGE_CEILING(block->size -
+			    edata_bsize_get(&block->edata)) >> LG_HUGEPAGE;
+		}
+		block = block->next;
+		assert(block == NULL || (base_ind_get(base) == 0));
+	}
+}
+
+static void *
+base_extent_bump_alloc_helper(edata_t *edata, size_t *gap_size, size_t size,
+    size_t alignment) {
+	void *ret;
+
+	assert(alignment == ALIGNMENT_CEILING(alignment, QUANTUM));
+	assert(size == ALIGNMENT_CEILING(size, alignment));
+
+	*gap_size = ALIGNMENT_CEILING((uintptr_t)edata_addr_get(edata),
+	    alignment) - (uintptr_t)edata_addr_get(edata);
+	ret = (void *)((uintptr_t)edata_addr_get(edata) + *gap_size);
+	assert(edata_bsize_get(edata) >= *gap_size + size);
+	edata_binit(edata, (void *)((uintptr_t)edata_addr_get(edata) +
+	    *gap_size + size), edata_bsize_get(edata) - *gap_size - size,
+	    edata_sn_get(edata));
+	return ret;
+}
+
+static void
+base_extent_bump_alloc_post(base_t *base, edata_t *edata, size_t gap_size,
+    void *addr, size_t size) {
+	if (edata_bsize_get(edata) > 0) {
+		/*
+		 * Compute the index for the largest size class that does not
+		 * exceed extent's size.
+		 */
+		szind_t index_floor =
+		    sz_size2index(edata_bsize_get(edata) + 1) - 1;
+		edata_heap_insert(&base->avail[index_floor], edata);
+	}
+
+	if (config_stats) {
+		base->allocated += size;
+		/*
+		 * Add one PAGE to base_resident for every page boundary that is
+		 * crossed by the new allocation. Adjust n_thp similarly when
+		 * metadata_thp is enabled.
+		 */
+		base->resident += PAGE_CEILING((uintptr_t)addr + size) -
+		    PAGE_CEILING((uintptr_t)addr - gap_size);
+		assert(base->allocated <= base->resident);
+		assert(base->resident <= base->mapped);
+		if (metadata_thp_madvise() && (opt_metadata_thp ==
+		    metadata_thp_always || base->auto_thp_switched)) {
+			base->n_thp += (HUGEPAGE_CEILING((uintptr_t)addr + size)
+			    - HUGEPAGE_CEILING((uintptr_t)addr - gap_size)) >>
+			    LG_HUGEPAGE;
+			assert(base->mapped >= base->n_thp << LG_HUGEPAGE);
+		}
+	}
+}
+
+static void *
+base_extent_bump_alloc(base_t *base, edata_t *edata, size_t size,
+    size_t alignment) {
+	void *ret;
+	size_t gap_size;
+
+	ret = base_extent_bump_alloc_helper(edata, &gap_size, size, alignment);
+	base_extent_bump_alloc_post(base, edata, gap_size, ret, size);
+	return ret;
+}
+
+/*
+ * Allocate a block of virtual memory that is large enough to start with a
+ * base_block_t header, followed by an object of specified size and alignment.
+ * On success a pointer to the initialized base_block_t header is returned.
+ */
+static base_block_t *
+base_block_alloc(tsdn_t *tsdn, base_t *base, ehooks_t *ehooks, unsigned ind,
+    pszind_t *pind_last, size_t *extent_sn_next, size_t size,
+    size_t alignment) {
+	alignment = ALIGNMENT_CEILING(alignment, QUANTUM);
+	size_t usize = ALIGNMENT_CEILING(size, alignment);
+	size_t header_size = sizeof(base_block_t);
+	size_t gap_size = ALIGNMENT_CEILING(header_size, alignment) -
+	    header_size;
+	/*
+	 * Create increasingly larger blocks in order to limit the total number
+	 * of disjoint virtual memory ranges.  Choose the next size in the page
+	 * size class series (skipping size classes that are not a multiple of
+	 * HUGEPAGE), or a size large enough to satisfy the requested size and
+	 * alignment, whichever is larger.
+	 */
+	size_t min_block_size = HUGEPAGE_CEILING(sz_psz2u(header_size + gap_size
+	    + usize));
+	pszind_t pind_next = (*pind_last + 1 < sz_psz2ind(SC_LARGE_MAXCLASS)) ?
+	    *pind_last + 1 : *pind_last;
+	size_t next_block_size = HUGEPAGE_CEILING(sz_pind2sz(pind_next));
+	size_t block_size = (min_block_size > next_block_size) ? min_block_size
+	    : next_block_size;
+	base_block_t *block = (base_block_t *)base_map(tsdn, ehooks, ind,
+	    block_size);
+	if (block == NULL) {
+		return NULL;
+	}
+
+	if (metadata_thp_madvise()) {
+		void *addr = (void *)block;
+		assert(((uintptr_t)addr & HUGEPAGE_MASK) == 0 &&
+		    (block_size & HUGEPAGE_MASK) == 0);
+		if (opt_metadata_thp == metadata_thp_always) {
+			pages_huge(addr, block_size);
+		} else if (opt_metadata_thp == metadata_thp_auto &&
+		    base != NULL) {
+			/* base != NULL indicates this is not a new base. */
+			malloc_mutex_lock(tsdn, &base->mtx);
+			base_auto_thp_switch(tsdn, base);
+			if (base->auto_thp_switched) {
+				pages_huge(addr, block_size);
+			}
+			malloc_mutex_unlock(tsdn, &base->mtx);
+		}
+	}
+
+	*pind_last = sz_psz2ind(block_size);
+	block->size = block_size;
+	block->next = NULL;
+	assert(block_size >= header_size);
+	base_edata_init(extent_sn_next, &block->edata,
+	    (void *)((uintptr_t)block + header_size), block_size - header_size);
+	return block;
+}
+
+/*
+ * Allocate an extent that is at least as large as specified size, with
+ * specified alignment.
+ */
+static edata_t *
+base_extent_alloc(tsdn_t *tsdn, base_t *base, size_t size, size_t alignment) {
+	malloc_mutex_assert_owner(tsdn, &base->mtx);
+
+	ehooks_t *ehooks = base_ehooks_get_for_metadata(base);
+	/*
+	 * Drop mutex during base_block_alloc(), because an extent hook will be
+	 * called.
+	 */
+	malloc_mutex_unlock(tsdn, &base->mtx);
+	base_block_t *block = base_block_alloc(tsdn, base, ehooks,
+	    base_ind_get(base), &base->pind_last, &base->extent_sn_next, size,
+	    alignment);
+	malloc_mutex_lock(tsdn, &base->mtx);
+	if (block == NULL) {
+		return NULL;
+	}
+	block->next = base->blocks;
+	base->blocks = block;
+	if (config_stats) {
+		base->allocated += sizeof(base_block_t);
+		base->resident += PAGE_CEILING(sizeof(base_block_t));
+		base->mapped += block->size;
+		if (metadata_thp_madvise() &&
+		    !(opt_metadata_thp == metadata_thp_auto
+		      && !base->auto_thp_switched)) {
+			assert(base->n_thp > 0);
+			base->n_thp += HUGEPAGE_CEILING(sizeof(base_block_t)) >>
+			    LG_HUGEPAGE;
+		}
+		assert(base->allocated <= base->resident);
+		assert(base->resident <= base->mapped);
+		assert(base->n_thp << LG_HUGEPAGE <= base->mapped);
+	}
+	return &block->edata;
+}
+
+base_t *
+b0get(void) {
+	return b0;
+}
+
+base_t *
+base_new(tsdn_t *tsdn, unsigned ind, const extent_hooks_t *extent_hooks,
+    bool metadata_use_hooks) {
+	pszind_t pind_last = 0;
+	size_t extent_sn_next = 0;
+
+	/*
+	 * The base will contain the ehooks eventually, but it itself is
+	 * allocated using them.  So we use some stack ehooks to bootstrap its
+	 * memory, and then initialize the ehooks within the base_t.
+	 */
+	ehooks_t fake_ehooks;
+	ehooks_init(&fake_ehooks, metadata_use_hooks ?
+	    (extent_hooks_t *)extent_hooks :
+	    (extent_hooks_t *)&ehooks_default_extent_hooks, ind);
+
+	base_block_t *block = base_block_alloc(tsdn, NULL, &fake_ehooks, ind,
+	    &pind_last, &extent_sn_next, sizeof(base_t), QUANTUM);
+	if (block == NULL) {
+		return NULL;
+	}
+
+	size_t gap_size;
+	size_t base_alignment = CACHELINE;
+	size_t base_size = ALIGNMENT_CEILING(sizeof(base_t), base_alignment);
+	base_t *base = (base_t *)base_extent_bump_alloc_helper(&block->edata,
+	    &gap_size, base_size, base_alignment);
+	ehooks_init(&base->ehooks, (extent_hooks_t *)extent_hooks, ind);
+	ehooks_init(&base->ehooks_base, metadata_use_hooks ?
+	    (extent_hooks_t *)extent_hooks :
+	    (extent_hooks_t *)&ehooks_default_extent_hooks, ind);
+	if (malloc_mutex_init(&base->mtx, "base", WITNESS_RANK_BASE,
+	    malloc_mutex_rank_exclusive)) {
+		base_unmap(tsdn, &fake_ehooks, ind, block, block->size);
+		return NULL;
+	}
+	base->pind_last = pind_last;
+	base->extent_sn_next = extent_sn_next;
+	base->blocks = block;
+	base->auto_thp_switched = false;
+	for (szind_t i = 0; i < SC_NSIZES; i++) {
+		edata_heap_new(&base->avail[i]);
+	}
+	if (config_stats) {
+		base->allocated = sizeof(base_block_t);
+		base->resident = PAGE_CEILING(sizeof(base_block_t));
+		base->mapped = block->size;
+		base->n_thp = (opt_metadata_thp == metadata_thp_always) &&
+		    metadata_thp_madvise() ? HUGEPAGE_CEILING(sizeof(base_block_t))
+		    >> LG_HUGEPAGE : 0;
+		assert(base->allocated <= base->resident);
+		assert(base->resident <= base->mapped);
+		assert(base->n_thp << LG_HUGEPAGE <= base->mapped);
+	}
+	base_extent_bump_alloc_post(base, &block->edata, gap_size, base,
+	    base_size);
+
+	return base;
+}
+
+void
+base_delete(tsdn_t *tsdn, base_t *base) {
+	ehooks_t *ehooks = base_ehooks_get_for_metadata(base);
+	base_block_t *next = base->blocks;
+	do {
+		base_block_t *block = next;
+		next = block->next;
+		base_unmap(tsdn, ehooks, base_ind_get(base), block,
+		    block->size);
+	} while (next != NULL);
+}
+
+ehooks_t *
+base_ehooks_get(base_t *base) {
+	return &base->ehooks;
+}
+
+ehooks_t *
+base_ehooks_get_for_metadata(base_t *base) {
+	return &base->ehooks_base;
+}
+
+extent_hooks_t *
+base_extent_hooks_set(base_t *base, extent_hooks_t *extent_hooks) {
+	extent_hooks_t *old_extent_hooks =
+	    ehooks_get_extent_hooks_ptr(&base->ehooks);
+	ehooks_init(&base->ehooks, extent_hooks, ehooks_ind_get(&base->ehooks));
+	return old_extent_hooks;
+}
+
+static void *
+base_alloc_impl(tsdn_t *tsdn, base_t *base, size_t size, size_t alignment,
+    size_t *esn) {
+	alignment = QUANTUM_CEILING(alignment);
+	size_t usize = ALIGNMENT_CEILING(size, alignment);
+	size_t asize = usize + alignment - QUANTUM;
+
+	edata_t *edata = NULL;
+	malloc_mutex_lock(tsdn, &base->mtx);
+	for (szind_t i = sz_size2index(asize); i < SC_NSIZES; i++) {
+		edata = edata_heap_remove_first(&base->avail[i]);
+		if (edata != NULL) {
+			/* Use existing space. */
+			break;
+		}
+	}
+	if (edata == NULL) {
+		/* Try to allocate more space. */
+		edata = base_extent_alloc(tsdn, base, usize, alignment);
+	}
+	void *ret;
+	if (edata == NULL) {
+		ret = NULL;
+		goto label_return;
+	}
+
+	ret = base_extent_bump_alloc(base, edata, usize, alignment);
+	if (esn != NULL) {
+		*esn = (size_t)edata_sn_get(edata);
+	}
+label_return:
+	malloc_mutex_unlock(tsdn, &base->mtx);
+	return ret;
+}
+
+/*
+ * base_alloc() returns zeroed memory, which is always demand-zeroed for the
+ * auto arenas, in order to make multi-page sparse data structures such as radix
+ * tree nodes efficient with respect to physical memory usage.  Upon success a
+ * pointer to at least size bytes with specified alignment is returned.  Note
+ * that size is rounded up to the nearest multiple of alignment to avoid false
+ * sharing.
+ */
+void *
+base_alloc(tsdn_t *tsdn, base_t *base, size_t size, size_t alignment) {
+	return base_alloc_impl(tsdn, base, size, alignment, NULL);
+}
+
+edata_t *
+base_alloc_edata(tsdn_t *tsdn, base_t *base) {
+	size_t esn;
+	edata_t *edata = base_alloc_impl(tsdn, base, sizeof(edata_t),
+	    EDATA_ALIGNMENT, &esn);
+	if (edata == NULL) {
+		return NULL;
+	}
+	edata_esn_set(edata, esn);
+	return edata;
+}
+
+void
+base_stats_get(tsdn_t *tsdn, base_t *base, size_t *allocated, size_t *resident,
+    size_t *mapped, size_t *n_thp) {
+	cassert(config_stats);
+
+	malloc_mutex_lock(tsdn, &base->mtx);
+	assert(base->allocated <= base->resident);
+	assert(base->resident <= base->mapped);
+	*allocated = base->allocated;
+	*resident = base->resident;
+	*mapped = base->mapped;
+	*n_thp = base->n_thp;
+	malloc_mutex_unlock(tsdn, &base->mtx);
+}
+
+void
+base_prefork(tsdn_t *tsdn, base_t *base) {
+	malloc_mutex_prefork(tsdn, &base->mtx);
+}
+
+void
+base_postfork_parent(tsdn_t *tsdn, base_t *base) {
+	malloc_mutex_postfork_parent(tsdn, &base->mtx);
+}
+
+void
+base_postfork_child(tsdn_t *tsdn, base_t *base) {
+	malloc_mutex_postfork_child(tsdn, &base->mtx);
+}
+
+bool
+base_boot(tsdn_t *tsdn) {
+	b0 = base_new(tsdn, 0, (extent_hooks_t *)&ehooks_default_extent_hooks,
+	    /* metadata_use_hooks */ true);
+	return (b0 == NULL);
+}
diff --git a/deps/jemalloc/src/bin.c b/deps/jemalloc/src/bin.c
new file mode 100644
index 0000000..fa20458
--- /dev/null
+++ b/deps/jemalloc/src/bin.c
@@ -0,0 +1,69 @@
+#include "jemalloc/internal/jemalloc_preamble.h"
+#include "jemalloc/internal/jemalloc_internal_includes.h"
+
+#include "jemalloc/internal/assert.h"
+#include "jemalloc/internal/bin.h"
+#include "jemalloc/internal/sc.h"
+#include "jemalloc/internal/witness.h"
+
+bool
+bin_update_shard_size(unsigned bin_shard_sizes[SC_NBINS], size_t start_size,
+    size_t end_size, size_t nshards) {
+	if (nshards > BIN_SHARDS_MAX || nshards == 0) {
+		return true;
+	}
+
+	if (start_size > SC_SMALL_MAXCLASS) {
+		return false;
+	}
+	if (end_size > SC_SMALL_MAXCLASS) {
+		end_size = SC_SMALL_MAXCLASS;
+	}
+
+	/* Compute the index since this may happen before sz init. */
+	szind_t ind1 = sz_size2index_compute(start_size);
+	szind_t ind2 = sz_size2index_compute(end_size);
+	for (unsigned i = ind1; i <= ind2; i++) {
+		bin_shard_sizes[i] = (unsigned)nshards;
+	}
+
+	return false;
+}
+
+void
+bin_shard_sizes_boot(unsigned bin_shard_sizes[SC_NBINS]) {
+	/* Load the default number of shards. */
+	for (unsigned i = 0; i < SC_NBINS; i++) {
+		bin_shard_sizes[i] = N_BIN_SHARDS_DEFAULT;
+	}
+}
+
+bool
+bin_init(bin_t *bin) {
+	if (malloc_mutex_init(&bin->lock, "bin", WITNESS_RANK_BIN,
+	    malloc_mutex_rank_exclusive)) {
+		return true;
+	}
+	bin->slabcur = NULL;
+	edata_heap_new(&bin->slabs_nonfull);
+	edata_list_active_init(&bin->slabs_full);
+	if (config_stats) {
+		memset(&bin->stats, 0, sizeof(bin_stats_t));
+	}
+	return false;
+}
+
+void
+bin_prefork(tsdn_t *tsdn, bin_t *bin) {
+	malloc_mutex_prefork(tsdn, &bin->lock);
+}
+
+void
+bin_postfork_parent(tsdn_t *tsdn, bin_t *bin) {
+	malloc_mutex_postfork_parent(tsdn, &bin->lock);
+}
+
+void
+bin_postfork_child(tsdn_t *tsdn, bin_t *bin) {
+	malloc_mutex_postfork_child(tsdn, &bin->lock);
+}
diff --git a/deps/jemalloc/src/bin_info.c b/deps/jemalloc/src/bin_info.c
new file mode 100644
index 0000000..8629ef8
--- /dev/null
+++ b/deps/jemalloc/src/bin_info.c
@@ -0,0 +1,30 @@
+#include "jemalloc/internal/jemalloc_preamble.h"
+#include "jemalloc/internal/jemalloc_internal_includes.h"
+
+#include "jemalloc/internal/bin_info.h"
+
+bin_info_t bin_infos[SC_NBINS];
+
+static void
+bin_infos_init(sc_data_t *sc_data, unsigned bin_shard_sizes[SC_NBINS],
+    bin_info_t infos[SC_NBINS]) {
+	for (unsigned i = 0; i < SC_NBINS; i++) {
+		bin_info_t *bin_info = &infos[i];
+		sc_t *sc = &sc_data->sc[i];
+		bin_info->reg_size = ((size_t)1U << sc->lg_base)
+		    + ((size_t)sc->ndelta << sc->lg_delta);
+		bin_info->slab_size = (sc->pgs << LG_PAGE);
+		bin_info->nregs =
+		    (uint32_t)(bin_info->slab_size / bin_info->reg_size);
+		bin_info->n_shards = bin_shard_sizes[i];
+		bitmap_info_t bitmap_info = BITMAP_INFO_INITIALIZER(
+		    bin_info->nregs);
+		bin_info->bitmap_info = bitmap_info;
+	}
+}
+
+void
+bin_info_boot(sc_data_t *sc_data, unsigned bin_shard_sizes[SC_NBINS]) {
+	assert(sc_data->initialized);
+	bin_infos_init(sc_data, bin_shard_sizes, bin_infos);
+}
diff --git a/deps/jemalloc/src/bitmap.c b/deps/jemalloc/src/bitmap.c
new file mode 100644
index 0000000..0ccedc5
--- /dev/null
+++ b/deps/jemalloc/src/bitmap.c
@@ -0,0 +1,120 @@
+#include "jemalloc/internal/jemalloc_preamble.h"
+#include "jemalloc/internal/jemalloc_internal_includes.h"
+
+#include "jemalloc/internal/assert.h"
+
+/******************************************************************************/
+
+#ifdef BITMAP_USE_TREE
+
+void
+bitmap_info_init(bitmap_info_t *binfo, size_t nbits) {
+	unsigned i;
+	size_t group_count;
+
+	assert(nbits > 0);
+	assert(nbits <= (ZU(1) << LG_BITMAP_MAXBITS));
+
+	/*
+	 * Compute the number of groups necessary to store nbits bits, and
+	 * progressively work upward through the levels until reaching a level
+	 * that requires only one group.
+	 */
+	binfo->levels[0].group_offset = 0;
+	group_count = BITMAP_BITS2GROUPS(nbits);
+	for (i = 1; group_count > 1; i++) {
+		assert(i < BITMAP_MAX_LEVELS);
+		binfo->levels[i].group_offset = binfo->levels[i-1].group_offset
+		    + group_count;
+		group_count = BITMAP_BITS2GROUPS(group_count);
+	}
+	binfo->levels[i].group_offset = binfo->levels[i-1].group_offset
+	    + group_count;
+	assert(binfo->levels[i].group_offset <= BITMAP_GROUPS_MAX);
+	binfo->nlevels = i;
+	binfo->nbits = nbits;
+}
+
+static size_t
+bitmap_info_ngroups(const bitmap_info_t *binfo) {
+	return binfo->levels[binfo->nlevels].group_offset;
+}
+
+void
+bitmap_init(bitmap_t *bitmap, const bitmap_info_t *binfo, bool fill) {
+	size_t extra;
+	unsigned i;
+
+	/*
+	 * Bits are actually inverted with regard to the external bitmap
+	 * interface.
+	 */
+
+	if (fill) {
+		/* The "filled" bitmap starts out with all 0 bits. */
+		memset(bitmap, 0, bitmap_size(binfo));
+		return;
+	}
+
+	/*
+	 * The "empty" bitmap starts out with all 1 bits, except for trailing
+	 * unused bits (if any).  Note that each group uses bit 0 to correspond
+	 * to the first logical bit in the group, so extra bits are the most
+	 * significant bits of the last group.
+	 */
+	memset(bitmap, 0xffU, bitmap_size(binfo));
+	extra = (BITMAP_GROUP_NBITS - (binfo->nbits & BITMAP_GROUP_NBITS_MASK))
+	    & BITMAP_GROUP_NBITS_MASK;
+	if (extra != 0) {
+		bitmap[binfo->levels[1].group_offset - 1] >>= extra;
+	}
+	for (i = 1; i < binfo->nlevels; i++) {
+		size_t group_count = binfo->levels[i].group_offset -
+		    binfo->levels[i-1].group_offset;
+		extra = (BITMAP_GROUP_NBITS - (group_count &
+		    BITMAP_GROUP_NBITS_MASK)) & BITMAP_GROUP_NBITS_MASK;
+		if (extra != 0) {
+			bitmap[binfo->levels[i+1].group_offset - 1] >>= extra;
+		}
+	}
+}
+
+#else /* BITMAP_USE_TREE */
+
+void
+bitmap_info_init(bitmap_info_t *binfo, size_t nbits) {
+	assert(nbits > 0);
+	assert(nbits <= (ZU(1) << LG_BITMAP_MAXBITS));
+
+	binfo->ngroups = BITMAP_BITS2GROUPS(nbits);
+	binfo->nbits = nbits;
+}
+
+static size_t
+bitmap_info_ngroups(const bitmap_info_t *binfo) {
+	return binfo->ngroups;
+}
+
+void
+bitmap_init(bitmap_t *bitmap, const bitmap_info_t *binfo, bool fill) {
+	size_t extra;
+
+	if (fill) {
+		memset(bitmap, 0, bitmap_size(binfo));
+		return;
+	}
+
+	memset(bitmap, 0xffU, bitmap_size(binfo));
+	extra = (BITMAP_GROUP_NBITS - (binfo->nbits & BITMAP_GROUP_NBITS_MASK))
+	    & BITMAP_GROUP_NBITS_MASK;
+	if (extra != 0) {
+		bitmap[binfo->ngroups - 1] >>= extra;
+	}
+}
+
+#endif /* BITMAP_USE_TREE */
+
+size_t
+bitmap_size(const bitmap_info_t *binfo) {
+	return (bitmap_info_ngroups(binfo) << LG_SIZEOF_BITMAP);
+}
diff --git a/deps/jemalloc/src/buf_writer.c b/deps/jemalloc/src/buf_writer.c
new file mode 100644
index 0000000..7c6f794
--- /dev/null
+++ b/deps/jemalloc/src/buf_writer.c
@@ -0,0 +1,144 @@
+#include "jemalloc/internal/jemalloc_preamble.h"
+#include "jemalloc/internal/jemalloc_internal_includes.h"
+
+#include "jemalloc/internal/buf_writer.h"
+#include "jemalloc/internal/malloc_io.h"
+
+static void *
+buf_writer_allocate_internal_buf(tsdn_t *tsdn, size_t buf_len) {
+#ifdef JEMALLOC_JET
+	if (buf_len > SC_LARGE_MAXCLASS) {
+		return NULL;
+	}
+#else
+	assert(buf_len <= SC_LARGE_MAXCLASS);
+#endif
+	return iallocztm(tsdn, buf_len, sz_size2index(buf_len), false, NULL,
+	    true, arena_get(tsdn, 0, false), true);
+}
+
+static void
+buf_writer_free_internal_buf(tsdn_t *tsdn, void *buf) {
+	if (buf != NULL) {
+		idalloctm(tsdn, buf, NULL, NULL, true, true);
+	}
+}
+
+static void
+buf_writer_assert(buf_writer_t *buf_writer) {
+	assert(buf_writer != NULL);
+	assert(buf_writer->write_cb != NULL);
+	if (buf_writer->buf != NULL) {
+		assert(buf_writer->buf_size > 0);
+	} else {
+		assert(buf_writer->buf_size == 0);
+		assert(buf_writer->internal_buf);
+	}
+	assert(buf_writer->buf_end <= buf_writer->buf_size);
+}
+
+bool
+buf_writer_init(tsdn_t *tsdn, buf_writer_t *buf_writer, write_cb_t *write_cb,
+    void *cbopaque, char *buf, size_t buf_len) {
+	if (write_cb != NULL) {
+		buf_writer->write_cb = write_cb;
+	} else {
+		buf_writer->write_cb = je_malloc_message != NULL ?
+		    je_malloc_message : wrtmessage;
+	}
+	buf_writer->cbopaque = cbopaque;
+	assert(buf_len >= 2);
+	if (buf != NULL) {
+		buf_writer->buf = buf;
+		buf_writer->internal_buf = false;
+	} else {
+		buf_writer->buf = buf_writer_allocate_internal_buf(tsdn,
+		    buf_len);
+		buf_writer->internal_buf = true;
+	}
+	if (buf_writer->buf != NULL) {
+		buf_writer->buf_size = buf_len - 1; /* Allowing for '\0'. */
+	} else {
+		buf_writer->buf_size = 0;
+	}
+	buf_writer->buf_end = 0;
+	buf_writer_assert(buf_writer);
+	return buf_writer->buf == NULL;
+}
+
+void
+buf_writer_flush(buf_writer_t *buf_writer) {
+	buf_writer_assert(buf_writer);
+	if (buf_writer->buf == NULL) {
+		return;
+	}
+	buf_writer->buf[buf_writer->buf_end] = '\0';
+	buf_writer->write_cb(buf_writer->cbopaque, buf_writer->buf);
+	buf_writer->buf_end = 0;
+	buf_writer_assert(buf_writer);
+}
+
+void
+buf_writer_cb(void *buf_writer_arg, const char *s) {
+	buf_writer_t *buf_writer = (buf_writer_t *)buf_writer_arg;
+	buf_writer_assert(buf_writer);
+	if (buf_writer->buf == NULL) {
+		buf_writer->write_cb(buf_writer->cbopaque, s);
+		return;
+	}
+	size_t i, slen, n;
+	for (i = 0, slen = strlen(s); i < slen; i += n) {
+		if (buf_writer->buf_end == buf_writer->buf_size) {
+			buf_writer_flush(buf_writer);
+		}
+		size_t s_remain = slen - i;
+		size_t buf_remain = buf_writer->buf_size - buf_writer->buf_end;
+		n = s_remain < buf_remain ? s_remain : buf_remain;
+		memcpy(buf_writer->buf + buf_writer->buf_end, s + i, n);
+		buf_writer->buf_end += n;
+		buf_writer_assert(buf_writer);
+	}
+	assert(i == slen);
+}
+
+void
+buf_writer_terminate(tsdn_t *tsdn, buf_writer_t *buf_writer) {
+	buf_writer_assert(buf_writer);
+	buf_writer_flush(buf_writer);
+	if (buf_writer->internal_buf) {
+		buf_writer_free_internal_buf(tsdn, buf_writer->buf);
+	}
+}
+
+void
+buf_writer_pipe(buf_writer_t *buf_writer, read_cb_t *read_cb,
+    void *read_cbopaque) {
+	/*
+	 * A tiny local buffer in case the buffered writer failed to allocate
+	 * at init.
+	 */
+	static char backup_buf[16];
+	static buf_writer_t backup_buf_writer;
+
+	buf_writer_assert(buf_writer);
+	assert(read_cb != NULL);
+	if (buf_writer->buf == NULL) {
+		buf_writer_init(TSDN_NULL, &backup_buf_writer,
+		    buf_writer->write_cb, buf_writer->cbopaque, backup_buf,
+		    sizeof(backup_buf));
+		buf_writer = &backup_buf_writer;
+	}
+	assert(buf_writer->buf != NULL);
+	ssize_t nread = 0;
+	do {
+		buf_writer->buf_end += nread;
+		buf_writer_assert(buf_writer);
+		if (buf_writer->buf_end == buf_writer->buf_size) {
+			buf_writer_flush(buf_writer);
+		}
+		nread = read_cb(read_cbopaque,
+		    buf_writer->buf + buf_writer->buf_end,
+		    buf_writer->buf_size - buf_writer->buf_end);
+	} while (nread > 0);
+	buf_writer_flush(buf_writer);
+}
diff --git a/deps/jemalloc/src/cache_bin.c b/deps/jemalloc/src/cache_bin.c
new file mode 100644
index 0000000..9ae072a
--- /dev/null
+++ b/deps/jemalloc/src/cache_bin.c
@@ -0,0 +1,99 @@
+#include "jemalloc/internal/jemalloc_preamble.h"
+#include "jemalloc/internal/jemalloc_internal_includes.h"
+
+#include "jemalloc/internal/bit_util.h"
+#include "jemalloc/internal/cache_bin.h"
+#include "jemalloc/internal/safety_check.h"
+
+void
+cache_bin_info_init(cache_bin_info_t *info,
+    cache_bin_sz_t ncached_max) {
+	assert(ncached_max <= CACHE_BIN_NCACHED_MAX);
+	size_t stack_size = (size_t)ncached_max * sizeof(void *);
+	assert(stack_size < ((size_t)1 << (sizeof(cache_bin_sz_t) * 8)));
+	info->ncached_max = (cache_bin_sz_t)ncached_max;
+}
+
+void
+cache_bin_info_compute_alloc(cache_bin_info_t *infos, szind_t ninfos,
+    size_t *size, size_t *alignment) {
+	/* For the total bin stack region (per tcache), reserve 2 more slots so
+	 * that
+	 * 1) the empty position can be safely read on the fast path before
+	 *    checking "is_empty"; and
+	 * 2) the cur_ptr can go beyond the empty position by 1 step safely on
+	 * the fast path (i.e. no overflow).
+	 */
+	*size = sizeof(void *) * 2;
+	for (szind_t i = 0; i < ninfos; i++) {
+		assert(infos[i].ncached_max > 0);
+		*size += infos[i].ncached_max * sizeof(void *);
+	}
+
+	/*
+	 * Align to at least PAGE, to minimize the # of TLBs needed by the
+	 * smaller sizes; also helps if the larger sizes don't get used at all.
+	 */
+	*alignment = PAGE;
+}
+
+void
+cache_bin_preincrement(cache_bin_info_t *infos, szind_t ninfos, void *alloc,
+    size_t *cur_offset) {
+	if (config_debug) {
+		size_t computed_size;
+		size_t computed_alignment;
+
+		/* Pointer should be as aligned as we asked for. */
+		cache_bin_info_compute_alloc(infos, ninfos, &computed_size,
+		    &computed_alignment);
+		assert(((uintptr_t)alloc & (computed_alignment - 1)) == 0);
+	}
+
+	*(uintptr_t *)((uintptr_t)alloc + *cur_offset) =
+	    cache_bin_preceding_junk;
+	*cur_offset += sizeof(void *);
+}
+
+void
+cache_bin_postincrement(cache_bin_info_t *infos, szind_t ninfos, void *alloc,
+    size_t *cur_offset) {
+	*(uintptr_t *)((uintptr_t)alloc + *cur_offset) =
+	    cache_bin_trailing_junk;
+	*cur_offset += sizeof(void *);
+}
+
+void
+cache_bin_init(cache_bin_t *bin, cache_bin_info_t *info, void *alloc,
+    size_t *cur_offset) {
+	/*
+	 * The full_position points to the lowest available space.  Allocations
+	 * will access the slots toward higher addresses (for the benefit of
+	 * adjacent prefetch).
+	 */
+	void *stack_cur = (void *)((uintptr_t)alloc + *cur_offset);
+	void *full_position = stack_cur;
+	uint16_t bin_stack_size = info->ncached_max * sizeof(void *);
+
+	*cur_offset += bin_stack_size;
+	void *empty_position = (void *)((uintptr_t)alloc + *cur_offset);
+
+	/* Init to the empty position. */
+	bin->stack_head = (void **)empty_position;
+	bin->low_bits_low_water = (uint16_t)(uintptr_t)bin->stack_head;
+	bin->low_bits_full = (uint16_t)(uintptr_t)full_position;
+	bin->low_bits_empty = (uint16_t)(uintptr_t)empty_position;
+	cache_bin_sz_t free_spots = cache_bin_diff(bin,
+	    bin->low_bits_full, (uint16_t)(uintptr_t)bin->stack_head,
+	    /* racy */ false);
+	assert(free_spots == bin_stack_size);
+	assert(cache_bin_ncached_get_local(bin, info) == 0);
+	assert(cache_bin_empty_position_get(bin) == empty_position);
+
+	assert(bin_stack_size > 0 || empty_position == full_position);
+}
+
+bool
+cache_bin_still_zero_initialized(cache_bin_t *bin) {
+	return bin->stack_head == NULL;
+}
diff --git a/deps/jemalloc/src/ckh.c b/deps/jemalloc/src/ckh.c
new file mode 100644
index 0000000..8db4319
--- /dev/null
+++ b/deps/jemalloc/src/ckh.c
@@ -0,0 +1,569 @@
+/*
+ *******************************************************************************
+ * Implementation of (2^1+,2) cuckoo hashing, where 2^1+ indicates that each
+ * hash bucket contains 2^n cells, for n >= 1, and 2 indicates that two hash
+ * functions are employed.  The original cuckoo hashing algorithm was described
+ * in:
+ *
+ *   Pagh, R., F.F. Rodler (2004) Cuckoo Hashing.  Journal of Algorithms
+ *     51(2):122-144.
+ *
+ * Generalization of cuckoo hashing was discussed in:
+ *
+ *   Erlingsson, U., M. Manasse, F. McSherry (2006) A cool and practical
+ *     alternative to traditional hash tables.  In Proceedings of the 7th
+ *     Workshop on Distributed Data and Structures (WDAS'06), Santa Clara, CA,
+ *     January 2006.
+ *
+ * This implementation uses precisely two hash functions because that is the
+ * fewest that can work, and supporting multiple hashes is an implementation
+ * burden.  Here is a reproduction of Figure 1 from Erlingsson et al. (2006)
+ * that shows approximate expected maximum load factors for various
+ * configurations:
+ *
+ *           |         #cells/bucket         |
+ *   #hashes |   1   |   2   |   4   |   8   |
+ *   --------+-------+-------+-------+-------+
+ *         1 | 0.006 | 0.006 | 0.03  | 0.12  |
+ *         2 | 0.49  | 0.86  |>0.93< |>0.96< |
+ *         3 | 0.91  | 0.97  | 0.98  | 0.999 |
+ *         4 | 0.97  | 0.99  | 0.999 |       |
+ *
+ * The number of cells per bucket is chosen such that a bucket fits in one cache
+ * line.  So, on 32- and 64-bit systems, we use (8,2) and (4,2) cuckoo hashing,
+ * respectively.
+ *
+ ******************************************************************************/
+#include "jemalloc/internal/jemalloc_preamble.h"
+
+#include "jemalloc/internal/ckh.h"
+
+#include "jemalloc/internal/jemalloc_internal_includes.h"
+
+#include "jemalloc/internal/assert.h"
+#include "jemalloc/internal/hash.h"
+#include "jemalloc/internal/malloc_io.h"
+#include "jemalloc/internal/prng.h"
+#include "jemalloc/internal/util.h"
+
+/******************************************************************************/
+/* Function prototypes for non-inline static functions. */
+
+static bool	ckh_grow(tsd_t *tsd, ckh_t *ckh);
+static void	ckh_shrink(tsd_t *tsd, ckh_t *ckh);
+
+/******************************************************************************/
+
+/*
+ * Search bucket for key and return the cell number if found; SIZE_T_MAX
+ * otherwise.
+ */
+static size_t
+ckh_bucket_search(ckh_t *ckh, size_t bucket, const void *key) {
+	ckhc_t *cell;
+	unsigned i;
+
+	for (i = 0; i < (ZU(1) << LG_CKH_BUCKET_CELLS); i++) {
+		cell = &ckh->tab[(bucket << LG_CKH_BUCKET_CELLS) + i];
+		if (cell->key != NULL && ckh->keycomp(key, cell->key)) {
+			return (bucket << LG_CKH_BUCKET_CELLS) + i;
+		}
+	}
+
+	return SIZE_T_MAX;
+}
+
+/*
+ * Search table for key and return cell number if found; SIZE_T_MAX otherwise.
+ */
+static size_t
+ckh_isearch(ckh_t *ckh, const void *key) {
+	size_t hashes[2], bucket, cell;
+
+	assert(ckh != NULL);
+
+	ckh->hash(key, hashes);
+
+	/* Search primary bucket. */
+	bucket = hashes[0] & ((ZU(1) << ckh->lg_curbuckets) - 1);
+	cell = ckh_bucket_search(ckh, bucket, key);
+	if (cell != SIZE_T_MAX) {
+		return cell;
+	}
+
+	/* Search secondary bucket. */
+	bucket = hashes[1] & ((ZU(1) << ckh->lg_curbuckets) - 1);
+	cell = ckh_bucket_search(ckh, bucket, key);
+	return cell;
+}
+
+static bool
+ckh_try_bucket_insert(ckh_t *ckh, size_t bucket, const void *key,
+    const void *data) {
+	ckhc_t *cell;
+	unsigned offset, i;
+
+	/*
+	 * Cycle through the cells in the bucket, starting at a random position.
+	 * The randomness avoids worst-case search overhead as buckets fill up.
+	 */
+	offset = (unsigned)prng_lg_range_u64(&ckh->prng_state,
+	    LG_CKH_BUCKET_CELLS);
+	for (i = 0; i < (ZU(1) << LG_CKH_BUCKET_CELLS); i++) {
+		cell = &ckh->tab[(bucket << LG_CKH_BUCKET_CELLS) +
+		    ((i + offset) & ((ZU(1) << LG_CKH_BUCKET_CELLS) - 1))];
+		if (cell->key == NULL) {
+			cell->key = key;
+			cell->data = data;
+			ckh->count++;
+			return false;
+		}
+	}
+
+	return true;
+}
+
+/*
+ * No space is available in bucket.  Randomly evict an item, then try to find an
+ * alternate location for that item.  Iteratively repeat this
+ * eviction/relocation procedure until either success or detection of an
+ * eviction/relocation bucket cycle.
+ */
+static bool
+ckh_evict_reloc_insert(ckh_t *ckh, size_t argbucket, void const **argkey,
+    void const **argdata) {
+	const void *key, *data, *tkey, *tdata;
+	ckhc_t *cell;
+	size_t hashes[2], bucket, tbucket;
+	unsigned i;
+
+	bucket = argbucket;
+	key = *argkey;
+	data = *argdata;
+	while (true) {
+		/*
+		 * Choose a random item within the bucket to evict.  This is
+		 * critical to correct function, because without (eventually)
+		 * evicting all items within a bucket during iteration, it
+		 * would be possible to get stuck in an infinite loop if there
+		 * were an item for which both hashes indicated the same
+		 * bucket.
+		 */
+		i = (unsigned)prng_lg_range_u64(&ckh->prng_state,
+		    LG_CKH_BUCKET_CELLS);
+		cell = &ckh->tab[(bucket << LG_CKH_BUCKET_CELLS) + i];
+		assert(cell->key != NULL);
+
+		/* Swap cell->{key,data} and {key,data} (evict). */
+		tkey = cell->key; tdata = cell->data;
+		cell->key = key; cell->data = data;
+		key = tkey; data = tdata;
+
+#ifdef CKH_COUNT
+		ckh->nrelocs++;
+#endif
+
+		/* Find the alternate bucket for the evicted item. */
+		ckh->hash(key, hashes);
+		tbucket = hashes[1] & ((ZU(1) << ckh->lg_curbuckets) - 1);
+		if (tbucket == bucket) {
+			tbucket = hashes[0] & ((ZU(1) << ckh->lg_curbuckets)
+			    - 1);
+			/*
+			 * It may be that (tbucket == bucket) still, if the
+			 * item's hashes both indicate this bucket.  However,
+			 * we are guaranteed to eventually escape this bucket
+			 * during iteration, assuming pseudo-random item
+			 * selection (true randomness would make infinite
+			 * looping a remote possibility).  The reason we can
+			 * never get trapped forever is that there are two
+			 * cases:
+			 *
+			 * 1) This bucket == argbucket, so we will quickly
+			 *    detect an eviction cycle and terminate.
+			 * 2) An item was evicted to this bucket from another,
+			 *    which means that at least one item in this bucket
+			 *    has hashes that indicate distinct buckets.
+			 */
+		}
+		/* Check for a cycle. */
+		if (tbucket == argbucket) {
+			*argkey = key;
+			*argdata = data;
+			return true;
+		}
+
+		bucket = tbucket;
+		if (!ckh_try_bucket_insert(ckh, bucket, key, data)) {
+			return false;
+		}
+	}
+}
+
+static bool
+ckh_try_insert(ckh_t *ckh, void const**argkey, void const**argdata) {
+	size_t hashes[2], bucket;
+	const void *key = *argkey;
+	const void *data = *argdata;
+
+	ckh->hash(key, hashes);
+
+	/* Try to insert in primary bucket. */
+	bucket = hashes[0] & ((ZU(1) << ckh->lg_curbuckets) - 1);
+	if (!ckh_try_bucket_insert(ckh, bucket, key, data)) {
+		return false;
+	}
+
+	/* Try to insert in secondary bucket. */
+	bucket = hashes[1] & ((ZU(1) << ckh->lg_curbuckets) - 1);
+	if (!ckh_try_bucket_insert(ckh, bucket, key, data)) {
+		return false;
+	}
+
+	/*
+	 * Try to find a place for this item via iterative eviction/relocation.
+	 */
+	return ckh_evict_reloc_insert(ckh, bucket, argkey, argdata);
+}
+
+/*
+ * Try to rebuild the hash table from scratch by inserting all items from the
+ * old table into the new.
+ */
+static bool
+ckh_rebuild(ckh_t *ckh, ckhc_t *aTab) {
+	size_t count, i, nins;
+	const void *key, *data;
+
+	count = ckh->count;
+	ckh->count = 0;
+	for (i = nins = 0; nins < count; i++) {
+		if (aTab[i].key != NULL) {
+			key = aTab[i].key;
+			data = aTab[i].data;
+			if (ckh_try_insert(ckh, &key, &data)) {
+				ckh->count = count;
+				return true;
+			}
+			nins++;
+		}
+	}
+
+	return false;
+}
+
+static bool
+ckh_grow(tsd_t *tsd, ckh_t *ckh) {
+	bool ret;
+	ckhc_t *tab, *ttab;
+	unsigned lg_prevbuckets, lg_curcells;
+
+#ifdef CKH_COUNT
+	ckh->ngrows++;
+#endif
+
+	/*
+	 * It is possible (though unlikely, given well behaved hashes) that the
+	 * table will have to be doubled more than once in order to create a
+	 * usable table.
+	 */
+	lg_prevbuckets = ckh->lg_curbuckets;
+	lg_curcells = ckh->lg_curbuckets + LG_CKH_BUCKET_CELLS;
+	while (true) {
+		size_t usize;
+
+		lg_curcells++;
+		usize = sz_sa2u(sizeof(ckhc_t) << lg_curcells, CACHELINE);
+		if (unlikely(usize == 0
+		    || usize > SC_LARGE_MAXCLASS)) {
+			ret = true;
+			goto label_return;
+		}
+		tab = (ckhc_t *)ipallocztm(tsd_tsdn(tsd), usize, CACHELINE,
+		    true, NULL, true, arena_ichoose(tsd, NULL));
+		if (tab == NULL) {
+			ret = true;
+			goto label_return;
+		}
+		/* Swap in new table. */
+		ttab = ckh->tab;
+		ckh->tab = tab;
+		tab = ttab;
+		ckh->lg_curbuckets = lg_curcells - LG_CKH_BUCKET_CELLS;
+
+		if (!ckh_rebuild(ckh, tab)) {
+			idalloctm(tsd_tsdn(tsd), tab, NULL, NULL, true, true);
+			break;
+		}
+
+		/* Rebuilding failed, so back out partially rebuilt table. */
+		idalloctm(tsd_tsdn(tsd), ckh->tab, NULL, NULL, true, true);
+		ckh->tab = tab;
+		ckh->lg_curbuckets = lg_prevbuckets;
+	}
+
+	ret = false;
+label_return:
+	return ret;
+}
+
+static void
+ckh_shrink(tsd_t *tsd, ckh_t *ckh) {
+	ckhc_t *tab, *ttab;
+	size_t usize;
+	unsigned lg_prevbuckets, lg_curcells;
+
+	/*
+	 * It is possible (though unlikely, given well behaved hashes) that the
+	 * table rebuild will fail.
+	 */
+	lg_prevbuckets = ckh->lg_curbuckets;
+	lg_curcells = ckh->lg_curbuckets + LG_CKH_BUCKET_CELLS - 1;
+	usize = sz_sa2u(sizeof(ckhc_t) << lg_curcells, CACHELINE);
+	if (unlikely(usize == 0 || usize > SC_LARGE_MAXCLASS)) {
+		return;
+	}
+	tab = (ckhc_t *)ipallocztm(tsd_tsdn(tsd), usize, CACHELINE, true, NULL,
+	    true, arena_ichoose(tsd, NULL));
+	if (tab == NULL) {
+		/*
+		 * An OOM error isn't worth propagating, since it doesn't
+		 * prevent this or future operations from proceeding.
+		 */
+		return;
+	}
+	/* Swap in new table. */
+	ttab = ckh->tab;
+	ckh->tab = tab;
+	tab = ttab;
+	ckh->lg_curbuckets = lg_curcells - LG_CKH_BUCKET_CELLS;
+
+	if (!ckh_rebuild(ckh, tab)) {
+		idalloctm(tsd_tsdn(tsd), tab, NULL, NULL, true, true);
+#ifdef CKH_COUNT
+		ckh->nshrinks++;
+#endif
+		return;
+	}
+
+	/* Rebuilding failed, so back out partially rebuilt table. */
+	idalloctm(tsd_tsdn(tsd), ckh->tab, NULL, NULL, true, true);
+	ckh->tab = tab;
+	ckh->lg_curbuckets = lg_prevbuckets;
+#ifdef CKH_COUNT
+	ckh->nshrinkfails++;
+#endif
+}
+
+bool
+ckh_new(tsd_t *tsd, ckh_t *ckh, size_t minitems, ckh_hash_t *ckh_hash,
+    ckh_keycomp_t *keycomp) {
+	bool ret;
+	size_t mincells, usize;
+	unsigned lg_mincells;
+
+	assert(minitems > 0);
+	assert(ckh_hash != NULL);
+	assert(keycomp != NULL);
+
+#ifdef CKH_COUNT
+	ckh->ngrows = 0;
+	ckh->nshrinks = 0;
+	ckh->nshrinkfails = 0;
+	ckh->ninserts = 0;
+	ckh->nrelocs = 0;
+#endif
+	ckh->prng_state = 42; /* Value doesn't really matter. */
+	ckh->count = 0;
+
+	/*
+	 * Find the minimum power of 2 that is large enough to fit minitems
+	 * entries.  We are using (2+,2) cuckoo hashing, which has an expected
+	 * maximum load factor of at least ~0.86, so 0.75 is a conservative load
+	 * factor that will typically allow mincells items to fit without ever
+	 * growing the table.
+	 */
+	assert(LG_CKH_BUCKET_CELLS > 0);
+	mincells = ((minitems + (3 - (minitems % 3))) / 3) << 2;
+	for (lg_mincells = LG_CKH_BUCKET_CELLS;
+	    (ZU(1) << lg_mincells) < mincells;
+	    lg_mincells++) {
+		/* Do nothing. */
+	}
+	ckh->lg_minbuckets = lg_mincells - LG_CKH_BUCKET_CELLS;
+	ckh->lg_curbuckets = lg_mincells - LG_CKH_BUCKET_CELLS;
+	ckh->hash = ckh_hash;
+	ckh->keycomp = keycomp;
+
+	usize = sz_sa2u(sizeof(ckhc_t) << lg_mincells, CACHELINE);
+	if (unlikely(usize == 0 || usize > SC_LARGE_MAXCLASS)) {
+		ret = true;
+		goto label_return;
+	}
+	ckh->tab = (ckhc_t *)ipallocztm(tsd_tsdn(tsd), usize, CACHELINE, true,
+	    NULL, true, arena_ichoose(tsd, NULL));
+	if (ckh->tab == NULL) {
+		ret = true;
+		goto label_return;
+	}
+
+	ret = false;
+label_return:
+	return ret;
+}
+
+void
+ckh_delete(tsd_t *tsd, ckh_t *ckh) {
+	assert(ckh != NULL);
+
+#ifdef CKH_VERBOSE
+	malloc_printf(
+	    "%s(%p): ngrows: %"FMTu64", nshrinks: %"FMTu64","
+	    " nshrinkfails: %"FMTu64", ninserts: %"FMTu64","
+	    " nrelocs: %"FMTu64"\n", __func__, ckh,
+	    (unsigned long long)ckh->ngrows,
+	    (unsigned long long)ckh->nshrinks,
+	    (unsigned long long)ckh->nshrinkfails,
+	    (unsigned long long)ckh->ninserts,
+	    (unsigned long long)ckh->nrelocs);
+#endif
+
+	idalloctm(tsd_tsdn(tsd), ckh->tab, NULL, NULL, true, true);
+	if (config_debug) {
+		memset(ckh, JEMALLOC_FREE_JUNK, sizeof(ckh_t));
+	}
+}
+
+size_t
+ckh_count(ckh_t *ckh) {
+	assert(ckh != NULL);
+
+	return ckh->count;
+}
+
+bool
+ckh_iter(ckh_t *ckh, size_t *tabind, void **key, void **data) {
+	size_t i, ncells;
+
+	for (i = *tabind, ncells = (ZU(1) << (ckh->lg_curbuckets +
+	    LG_CKH_BUCKET_CELLS)); i < ncells; i++) {
+		if (ckh->tab[i].key != NULL) {
+			if (key != NULL) {
+				*key = (void *)ckh->tab[i].key;
+			}
+			if (data != NULL) {
+				*data = (void *)ckh->tab[i].data;
+			}
+			*tabind = i + 1;
+			return false;
+		}
+	}
+
+	return true;
+}
+
+bool
+ckh_insert(tsd_t *tsd, ckh_t *ckh, const void *key, const void *data) {
+	bool ret;
+
+	assert(ckh != NULL);
+	assert(ckh_search(ckh, key, NULL, NULL));
+
+#ifdef CKH_COUNT
+	ckh->ninserts++;
+#endif
+
+	while (ckh_try_insert(ckh, &key, &data)) {
+		if (ckh_grow(tsd, ckh)) {
+			ret = true;
+			goto label_return;
+		}
+	}
+
+	ret = false;
+label_return:
+	return ret;
+}
+
+bool
+ckh_remove(tsd_t *tsd, ckh_t *ckh, const void *searchkey, void **key,
+    void **data) {
+	size_t cell;
+
+	assert(ckh != NULL);
+
+	cell = ckh_isearch(ckh, searchkey);
+	if (cell != SIZE_T_MAX) {
+		if (key != NULL) {
+			*key = (void *)ckh->tab[cell].key;
+		}
+		if (data != NULL) {
+			*data = (void *)ckh->tab[cell].data;
+		}
+		ckh->tab[cell].key = NULL;
+		ckh->tab[cell].data = NULL; /* Not necessary. */
+
+		ckh->count--;
+		/* Try to halve the table if it is less than 1/4 full. */
+		if (ckh->count < (ZU(1) << (ckh->lg_curbuckets
+		    + LG_CKH_BUCKET_CELLS - 2)) && ckh->lg_curbuckets
+		    > ckh->lg_minbuckets) {
+			/* Ignore error due to OOM. */
+			ckh_shrink(tsd, ckh);
+		}
+
+		return false;
+	}
+
+	return true;
+}
+
+bool
+ckh_search(ckh_t *ckh, const void *searchkey, void **key, void **data) {
+	size_t cell;
+
+	assert(ckh != NULL);
+
+	cell = ckh_isearch(ckh, searchkey);
+	if (cell != SIZE_T_MAX) {
+		if (key != NULL) {
+			*key = (void *)ckh->tab[cell].key;
+		}
+		if (data != NULL) {
+			*data = (void *)ckh->tab[cell].data;
+		}
+		return false;
+	}
+
+	return true;
+}
+
+void
+ckh_string_hash(const void *key, size_t r_hash[2]) {
+	hash(key, strlen((const char *)key), 0x94122f33U, r_hash);
+}
+
+bool
+ckh_string_keycomp(const void *k1, const void *k2) {
+	assert(k1 != NULL);
+	assert(k2 != NULL);
+
+	return !strcmp((char *)k1, (char *)k2);
+}
+
+void
+ckh_pointer_hash(const void *key, size_t r_hash[2]) {
+	union {
+		const void	*v;
+		size_t		i;
+	} u;
+
+	assert(sizeof(u.v) == sizeof(u.i));
+	u.v = key;
+	hash(&u.i, sizeof(u.i), 0xd983396eU, r_hash);
+}
+
+bool
+ckh_pointer_keycomp(const void *k1, const void *k2) {
+	return (k1 == k2);
+}
diff --git a/deps/jemalloc/src/counter.c b/deps/jemalloc/src/counter.c
new file mode 100644
index 0000000..8f1ae3a
--- /dev/null
+++ b/deps/jemalloc/src/counter.c
@@ -0,0 +1,30 @@
+#include "jemalloc/internal/jemalloc_preamble.h"
+#include "jemalloc/internal/jemalloc_internal_includes.h"
+
+#include "jemalloc/internal/counter.h"
+
+bool
+counter_accum_init(counter_accum_t *counter, uint64_t interval) {
+	if (LOCKEDINT_MTX_INIT(counter->mtx, "counter_accum",
+	    WITNESS_RANK_COUNTER_ACCUM, malloc_mutex_rank_exclusive)) {
+		return true;
+	}
+	locked_init_u64_unsynchronized(&counter->accumbytes, 0);
+	counter->interval = interval;
+	return false;
+}
+
+void
+counter_prefork(tsdn_t *tsdn, counter_accum_t *counter) {
+	LOCKEDINT_MTX_PREFORK(tsdn, counter->mtx);
+}
+
+void
+counter_postfork_parent(tsdn_t *tsdn, counter_accum_t *counter) {
+	LOCKEDINT_MTX_POSTFORK_PARENT(tsdn, counter->mtx);
+}
+
+void
+counter_postfork_child(tsdn_t *tsdn, counter_accum_t *counter) {
+	LOCKEDINT_MTX_POSTFORK_CHILD(tsdn, counter->mtx);
+}
diff --git a/deps/jemalloc/src/ctl.c b/deps/jemalloc/src/ctl.c
new file mode 100644
index 0000000..135271b
--- /dev/null
+++ b/deps/jemalloc/src/ctl.c
@@ -0,0 +1,4414 @@
+#include "jemalloc/internal/jemalloc_preamble.h"
+#include "jemalloc/internal/jemalloc_internal_includes.h"
+
+#include "jemalloc/internal/assert.h"
+#include "jemalloc/internal/ctl.h"
+#include "jemalloc/internal/extent_dss.h"
+#include "jemalloc/internal/extent_mmap.h"
+#include "jemalloc/internal/inspect.h"
+#include "jemalloc/internal/mutex.h"
+#include "jemalloc/internal/nstime.h"
+#include "jemalloc/internal/peak_event.h"
+#include "jemalloc/internal/prof_data.h"
+#include "jemalloc/internal/prof_log.h"
+#include "jemalloc/internal/prof_recent.h"
+#include "jemalloc/internal/prof_stats.h"
+#include "jemalloc/internal/prof_sys.h"
+#include "jemalloc/internal/safety_check.h"
+#include "jemalloc/internal/sc.h"
+#include "jemalloc/internal/util.h"
+
+/******************************************************************************/
+/* Data. */
+
+/*
+ * ctl_mtx protects the following:
+ * - ctl_stats->*
+ */
+static malloc_mutex_t	ctl_mtx;
+static bool		ctl_initialized;
+static ctl_stats_t	*ctl_stats;
+static ctl_arenas_t	*ctl_arenas;
+
+/******************************************************************************/
+/* Helpers for named and indexed nodes. */
+
+static const ctl_named_node_t *
+ctl_named_node(const ctl_node_t *node) {
+	return ((node->named) ? (const ctl_named_node_t *)node : NULL);
+}
+
+static const ctl_named_node_t *
+ctl_named_children(const ctl_named_node_t *node, size_t index) {
+	const ctl_named_node_t *children = ctl_named_node(node->children);
+
+	return (children ? &children[index] : NULL);
+}
+
+static const ctl_indexed_node_t *
+ctl_indexed_node(const ctl_node_t *node) {
+	return (!node->named ? (const ctl_indexed_node_t *)node : NULL);
+}
+
+/******************************************************************************/
+/* Function prototypes for non-inline static functions. */
+
+#define CTL_PROTO(n)							\
+static int	n##_ctl(tsd_t *tsd, const size_t *mib, size_t miblen,	\
+    void *oldp, size_t *oldlenp, void *newp, size_t newlen);
+
+#define INDEX_PROTO(n)							\
+static const ctl_named_node_t	*n##_index(tsdn_t *tsdn,		\
+    const size_t *mib, size_t miblen, size_t i);
+
+CTL_PROTO(version)
+CTL_PROTO(epoch)
+CTL_PROTO(background_thread)
+CTL_PROTO(max_background_threads)
+CTL_PROTO(thread_tcache_enabled)
+CTL_PROTO(thread_tcache_flush)
+CTL_PROTO(thread_peak_read)
+CTL_PROTO(thread_peak_reset)
+CTL_PROTO(thread_prof_name)
+CTL_PROTO(thread_prof_active)
+CTL_PROTO(thread_arena)
+CTL_PROTO(thread_allocated)
+CTL_PROTO(thread_allocatedp)
+CTL_PROTO(thread_deallocated)
+CTL_PROTO(thread_deallocatedp)
+CTL_PROTO(thread_idle)
+CTL_PROTO(config_cache_oblivious)
+CTL_PROTO(config_debug)
+CTL_PROTO(config_fill)
+CTL_PROTO(config_lazy_lock)
+CTL_PROTO(config_malloc_conf)
+CTL_PROTO(config_opt_safety_checks)
+CTL_PROTO(config_prof)
+CTL_PROTO(config_prof_libgcc)
+CTL_PROTO(config_prof_libunwind)
+CTL_PROTO(config_stats)
+CTL_PROTO(config_utrace)
+CTL_PROTO(config_xmalloc)
+CTL_PROTO(opt_abort)
+CTL_PROTO(opt_abort_conf)
+CTL_PROTO(opt_cache_oblivious)
+CTL_PROTO(opt_trust_madvise)
+CTL_PROTO(opt_confirm_conf)
+CTL_PROTO(opt_hpa)
+CTL_PROTO(opt_hpa_slab_max_alloc)
+CTL_PROTO(opt_hpa_hugification_threshold)
+CTL_PROTO(opt_hpa_hugify_delay_ms)
+CTL_PROTO(opt_hpa_min_purge_interval_ms)
+CTL_PROTO(opt_hpa_dirty_mult)
+CTL_PROTO(opt_hpa_sec_nshards)
+CTL_PROTO(opt_hpa_sec_max_alloc)
+CTL_PROTO(opt_hpa_sec_max_bytes)
+CTL_PROTO(opt_hpa_sec_bytes_after_flush)
+CTL_PROTO(opt_hpa_sec_batch_fill_extra)
+CTL_PROTO(opt_metadata_thp)
+CTL_PROTO(opt_retain)
+CTL_PROTO(opt_dss)
+CTL_PROTO(opt_narenas)
+CTL_PROTO(opt_percpu_arena)
+CTL_PROTO(opt_oversize_threshold)
+CTL_PROTO(opt_background_thread)
+CTL_PROTO(opt_mutex_max_spin)
+CTL_PROTO(opt_max_background_threads)
+CTL_PROTO(opt_dirty_decay_ms)
+CTL_PROTO(opt_muzzy_decay_ms)
+CTL_PROTO(opt_stats_print)
+CTL_PROTO(opt_stats_print_opts)
+CTL_PROTO(opt_stats_interval)
+CTL_PROTO(opt_stats_interval_opts)
+CTL_PROTO(opt_junk)
+CTL_PROTO(opt_zero)
+CTL_PROTO(opt_utrace)
+CTL_PROTO(opt_xmalloc)
+CTL_PROTO(opt_experimental_infallible_new)
+CTL_PROTO(opt_tcache)
+CTL_PROTO(opt_tcache_max)
+CTL_PROTO(opt_tcache_nslots_small_min)
+CTL_PROTO(opt_tcache_nslots_small_max)
+CTL_PROTO(opt_tcache_nslots_large)
+CTL_PROTO(opt_lg_tcache_nslots_mul)
+CTL_PROTO(opt_tcache_gc_incr_bytes)
+CTL_PROTO(opt_tcache_gc_delay_bytes)
+CTL_PROTO(opt_lg_tcache_flush_small_div)
+CTL_PROTO(opt_lg_tcache_flush_large_div)
+CTL_PROTO(opt_thp)
+CTL_PROTO(opt_lg_extent_max_active_fit)
+CTL_PROTO(opt_prof)
+CTL_PROTO(opt_prof_prefix)
+CTL_PROTO(opt_prof_active)
+CTL_PROTO(opt_prof_thread_active_init)
+CTL_PROTO(opt_lg_prof_sample)
+CTL_PROTO(opt_lg_prof_interval)
+CTL_PROTO(opt_prof_gdump)
+CTL_PROTO(opt_prof_final)
+CTL_PROTO(opt_prof_leak)
+CTL_PROTO(opt_prof_leak_error)
+CTL_PROTO(opt_prof_accum)
+CTL_PROTO(opt_prof_recent_alloc_max)
+CTL_PROTO(opt_prof_stats)
+CTL_PROTO(opt_prof_sys_thread_name)
+CTL_PROTO(opt_prof_time_res)
+CTL_PROTO(opt_lg_san_uaf_align)
+CTL_PROTO(opt_zero_realloc)
+CTL_PROTO(tcache_create)
+CTL_PROTO(tcache_flush)
+CTL_PROTO(tcache_destroy)
+CTL_PROTO(arena_i_initialized)
+CTL_PROTO(arena_i_decay)
+CTL_PROTO(arena_i_purge)
+CTL_PROTO(arena_i_reset)
+CTL_PROTO(arena_i_destroy)
+CTL_PROTO(arena_i_dss)
+CTL_PROTO(arena_i_oversize_threshold)
+CTL_PROTO(arena_i_dirty_decay_ms)
+CTL_PROTO(arena_i_muzzy_decay_ms)
+CTL_PROTO(arena_i_extent_hooks)
+CTL_PROTO(arena_i_retain_grow_limit)
+INDEX_PROTO(arena_i)
+CTL_PROTO(arenas_bin_i_size)
+CTL_PROTO(arenas_bin_i_nregs)
+CTL_PROTO(arenas_bin_i_slab_size)
+CTL_PROTO(arenas_bin_i_nshards)
+INDEX_PROTO(arenas_bin_i)
+CTL_PROTO(arenas_lextent_i_size)
+INDEX_PROTO(arenas_lextent_i)
+CTL_PROTO(arenas_narenas)
+CTL_PROTO(arenas_dirty_decay_ms)
+CTL_PROTO(arenas_muzzy_decay_ms)
+CTL_PROTO(arenas_quantum)
+CTL_PROTO(arenas_page)
+CTL_PROTO(arenas_tcache_max)
+CTL_PROTO(arenas_nbins)
+CTL_PROTO(arenas_nhbins)
+CTL_PROTO(arenas_nlextents)
+CTL_PROTO(arenas_create)
+CTL_PROTO(arenas_lookup)
+CTL_PROTO(prof_thread_active_init)
+CTL_PROTO(prof_active)
+CTL_PROTO(prof_dump)
+CTL_PROTO(prof_gdump)
+CTL_PROTO(prof_prefix)
+CTL_PROTO(prof_reset)
+CTL_PROTO(prof_interval)
+CTL_PROTO(lg_prof_sample)
+CTL_PROTO(prof_log_start)
+CTL_PROTO(prof_log_stop)
+CTL_PROTO(prof_stats_bins_i_live)
+CTL_PROTO(prof_stats_bins_i_accum)
+INDEX_PROTO(prof_stats_bins_i)
+CTL_PROTO(prof_stats_lextents_i_live)
+CTL_PROTO(prof_stats_lextents_i_accum)
+INDEX_PROTO(prof_stats_lextents_i)
+CTL_PROTO(stats_arenas_i_small_allocated)
+CTL_PROTO(stats_arenas_i_small_nmalloc)
+CTL_PROTO(stats_arenas_i_small_ndalloc)
+CTL_PROTO(stats_arenas_i_small_nrequests)
+CTL_PROTO(stats_arenas_i_small_nfills)
+CTL_PROTO(stats_arenas_i_small_nflushes)
+CTL_PROTO(stats_arenas_i_large_allocated)
+CTL_PROTO(stats_arenas_i_large_nmalloc)
+CTL_PROTO(stats_arenas_i_large_ndalloc)
+CTL_PROTO(stats_arenas_i_large_nrequests)
+CTL_PROTO(stats_arenas_i_large_nfills)
+CTL_PROTO(stats_arenas_i_large_nflushes)
+CTL_PROTO(stats_arenas_i_bins_j_nmalloc)
+CTL_PROTO(stats_arenas_i_bins_j_ndalloc)
+CTL_PROTO(stats_arenas_i_bins_j_nrequests)
+CTL_PROTO(stats_arenas_i_bins_j_curregs)
+CTL_PROTO(stats_arenas_i_bins_j_nfills)
+CTL_PROTO(stats_arenas_i_bins_j_nflushes)
+CTL_PROTO(stats_arenas_i_bins_j_nslabs)
+CTL_PROTO(stats_arenas_i_bins_j_nreslabs)
+CTL_PROTO(stats_arenas_i_bins_j_curslabs)
+CTL_PROTO(stats_arenas_i_bins_j_nonfull_slabs)
+INDEX_PROTO(stats_arenas_i_bins_j)
+CTL_PROTO(stats_arenas_i_lextents_j_nmalloc)
+CTL_PROTO(stats_arenas_i_lextents_j_ndalloc)
+CTL_PROTO(stats_arenas_i_lextents_j_nrequests)
+CTL_PROTO(stats_arenas_i_lextents_j_curlextents)
+INDEX_PROTO(stats_arenas_i_lextents_j)
+CTL_PROTO(stats_arenas_i_extents_j_ndirty)
+CTL_PROTO(stats_arenas_i_extents_j_nmuzzy)
+CTL_PROTO(stats_arenas_i_extents_j_nretained)
+CTL_PROTO(stats_arenas_i_extents_j_dirty_bytes)
+CTL_PROTO(stats_arenas_i_extents_j_muzzy_bytes)
+CTL_PROTO(stats_arenas_i_extents_j_retained_bytes)
+INDEX_PROTO(stats_arenas_i_extents_j)
+CTL_PROTO(stats_arenas_i_hpa_shard_npurge_passes)
+CTL_PROTO(stats_arenas_i_hpa_shard_npurges)
+CTL_PROTO(stats_arenas_i_hpa_shard_nhugifies)
+CTL_PROTO(stats_arenas_i_hpa_shard_ndehugifies)
+
+/* We have a set of stats for full slabs. */
+CTL_PROTO(stats_arenas_i_hpa_shard_full_slabs_npageslabs_nonhuge)
+CTL_PROTO(stats_arenas_i_hpa_shard_full_slabs_npageslabs_huge)
+CTL_PROTO(stats_arenas_i_hpa_shard_full_slabs_nactive_nonhuge)
+CTL_PROTO(stats_arenas_i_hpa_shard_full_slabs_nactive_huge)
+CTL_PROTO(stats_arenas_i_hpa_shard_full_slabs_ndirty_nonhuge)
+CTL_PROTO(stats_arenas_i_hpa_shard_full_slabs_ndirty_huge)
+
+/* A parallel set for the empty slabs. */
+CTL_PROTO(stats_arenas_i_hpa_shard_empty_slabs_npageslabs_nonhuge)
+CTL_PROTO(stats_arenas_i_hpa_shard_empty_slabs_npageslabs_huge)
+CTL_PROTO(stats_arenas_i_hpa_shard_empty_slabs_nactive_nonhuge)
+CTL_PROTO(stats_arenas_i_hpa_shard_empty_slabs_nactive_huge)
+CTL_PROTO(stats_arenas_i_hpa_shard_empty_slabs_ndirty_nonhuge)
+CTL_PROTO(stats_arenas_i_hpa_shard_empty_slabs_ndirty_huge)
+
+/*
+ * And one for the slabs that are neither empty nor full, but indexed by how
+ * full they are.
+ */
+CTL_PROTO(stats_arenas_i_hpa_shard_nonfull_slabs_j_npageslabs_nonhuge)
+CTL_PROTO(stats_arenas_i_hpa_shard_nonfull_slabs_j_npageslabs_huge)
+CTL_PROTO(stats_arenas_i_hpa_shard_nonfull_slabs_j_nactive_nonhuge)
+CTL_PROTO(stats_arenas_i_hpa_shard_nonfull_slabs_j_nactive_huge)
+CTL_PROTO(stats_arenas_i_hpa_shard_nonfull_slabs_j_ndirty_nonhuge)
+CTL_PROTO(stats_arenas_i_hpa_shard_nonfull_slabs_j_ndirty_huge)
+
+INDEX_PROTO(stats_arenas_i_hpa_shard_nonfull_slabs_j)
+CTL_PROTO(stats_arenas_i_nthreads)
+CTL_PROTO(stats_arenas_i_uptime)
+CTL_PROTO(stats_arenas_i_dss)
+CTL_PROTO(stats_arenas_i_dirty_decay_ms)
+CTL_PROTO(stats_arenas_i_muzzy_decay_ms)
+CTL_PROTO(stats_arenas_i_pactive)
+CTL_PROTO(stats_arenas_i_pdirty)
+CTL_PROTO(stats_arenas_i_pmuzzy)
+CTL_PROTO(stats_arenas_i_mapped)
+CTL_PROTO(stats_arenas_i_retained)
+CTL_PROTO(stats_arenas_i_extent_avail)
+CTL_PROTO(stats_arenas_i_dirty_npurge)
+CTL_PROTO(stats_arenas_i_dirty_nmadvise)
+CTL_PROTO(stats_arenas_i_dirty_purged)
+CTL_PROTO(stats_arenas_i_muzzy_npurge)
+CTL_PROTO(stats_arenas_i_muzzy_nmadvise)
+CTL_PROTO(stats_arenas_i_muzzy_purged)
+CTL_PROTO(stats_arenas_i_base)
+CTL_PROTO(stats_arenas_i_internal)
+CTL_PROTO(stats_arenas_i_metadata_thp)
+CTL_PROTO(stats_arenas_i_tcache_bytes)
+CTL_PROTO(stats_arenas_i_tcache_stashed_bytes)
+CTL_PROTO(stats_arenas_i_resident)
+CTL_PROTO(stats_arenas_i_abandoned_vm)
+CTL_PROTO(stats_arenas_i_hpa_sec_bytes)
+INDEX_PROTO(stats_arenas_i)
+CTL_PROTO(stats_allocated)
+CTL_PROTO(stats_active)
+CTL_PROTO(stats_background_thread_num_threads)
+CTL_PROTO(stats_background_thread_num_runs)
+CTL_PROTO(stats_background_thread_run_interval)
+CTL_PROTO(stats_metadata)
+CTL_PROTO(stats_metadata_thp)
+CTL_PROTO(stats_resident)
+CTL_PROTO(stats_mapped)
+CTL_PROTO(stats_retained)
+CTL_PROTO(stats_zero_reallocs)
+CTL_PROTO(experimental_hooks_install)
+CTL_PROTO(experimental_hooks_remove)
+CTL_PROTO(experimental_hooks_prof_backtrace)
+CTL_PROTO(experimental_hooks_prof_dump)
+CTL_PROTO(experimental_hooks_safety_check_abort)
+CTL_PROTO(experimental_thread_activity_callback)
+CTL_PROTO(experimental_utilization_query)
+CTL_PROTO(experimental_utilization_batch_query)
+CTL_PROTO(experimental_arenas_i_pactivep)
+INDEX_PROTO(experimental_arenas_i)
+CTL_PROTO(experimental_prof_recent_alloc_max)
+CTL_PROTO(experimental_prof_recent_alloc_dump)
+CTL_PROTO(experimental_batch_alloc)
+CTL_PROTO(experimental_arenas_create_ext)
+
+#define MUTEX_STATS_CTL_PROTO_GEN(n)					\
+CTL_PROTO(stats_##n##_num_ops)						\
+CTL_PROTO(stats_##n##_num_wait)						\
+CTL_PROTO(stats_##n##_num_spin_acq)					\
+CTL_PROTO(stats_##n##_num_owner_switch)					\
+CTL_PROTO(stats_##n##_total_wait_time)					\
+CTL_PROTO(stats_##n##_max_wait_time)					\
+CTL_PROTO(stats_##n##_max_num_thds)
+
+/* Global mutexes. */
+#define OP(mtx) MUTEX_STATS_CTL_PROTO_GEN(mutexes_##mtx)
+MUTEX_PROF_GLOBAL_MUTEXES
+#undef OP
+
+/* Per arena mutexes. */
+#define OP(mtx) MUTEX_STATS_CTL_PROTO_GEN(arenas_i_mutexes_##mtx)
+MUTEX_PROF_ARENA_MUTEXES
+#undef OP
+
+/* Arena bin mutexes. */
+MUTEX_STATS_CTL_PROTO_GEN(arenas_i_bins_j_mutex)
+#undef MUTEX_STATS_CTL_PROTO_GEN
+
+CTL_PROTO(stats_mutexes_reset)
+
+/******************************************************************************/
+/* mallctl tree. */
+
+#define NAME(n)	{true},	n
+#define CHILD(t, c)							\
+	sizeof(c##_node) / sizeof(ctl_##t##_node_t),			\
+	(ctl_node_t *)c##_node,						\
+	NULL
+#define CTL(c)	0, NULL, c##_ctl
+
+/*
+ * Only handles internal indexed nodes, since there are currently no external
+ * ones.
+ */
+#define INDEX(i)	{false},	i##_index
+
+static const ctl_named_node_t	thread_tcache_node[] = {
+	{NAME("enabled"),	CTL(thread_tcache_enabled)},
+	{NAME("flush"),		CTL(thread_tcache_flush)}
+};
+
+static const ctl_named_node_t	thread_peak_node[] = {
+	{NAME("read"),		CTL(thread_peak_read)},
+	{NAME("reset"),		CTL(thread_peak_reset)},
+};
+
+static const ctl_named_node_t	thread_prof_node[] = {
+	{NAME("name"),		CTL(thread_prof_name)},
+	{NAME("active"),	CTL(thread_prof_active)}
+};
+
+static const ctl_named_node_t	thread_node[] = {
+	{NAME("arena"),		CTL(thread_arena)},
+	{NAME("allocated"),	CTL(thread_allocated)},
+	{NAME("allocatedp"),	CTL(thread_allocatedp)},
+	{NAME("deallocated"),	CTL(thread_deallocated)},
+	{NAME("deallocatedp"),	CTL(thread_deallocatedp)},
+	{NAME("tcache"),	CHILD(named, thread_tcache)},
+	{NAME("peak"),		CHILD(named, thread_peak)},
+	{NAME("prof"),		CHILD(named, thread_prof)},
+	{NAME("idle"),		CTL(thread_idle)}
+};
+
+static const ctl_named_node_t	config_node[] = {
+	{NAME("cache_oblivious"), CTL(config_cache_oblivious)},
+	{NAME("debug"),		CTL(config_debug)},
+	{NAME("fill"),		CTL(config_fill)},
+	{NAME("lazy_lock"),	CTL(config_lazy_lock)},
+	{NAME("malloc_conf"),	CTL(config_malloc_conf)},
+	{NAME("opt_safety_checks"),	CTL(config_opt_safety_checks)},
+	{NAME("prof"),		CTL(config_prof)},
+	{NAME("prof_libgcc"),	CTL(config_prof_libgcc)},
+	{NAME("prof_libunwind"), CTL(config_prof_libunwind)},
+	{NAME("stats"),		CTL(config_stats)},
+	{NAME("utrace"),	CTL(config_utrace)},
+	{NAME("xmalloc"),	CTL(config_xmalloc)}
+};
+
+static const ctl_named_node_t opt_node[] = {
+	{NAME("abort"),		CTL(opt_abort)},
+	{NAME("abort_conf"),	CTL(opt_abort_conf)},
+	{NAME("cache_oblivious"),	CTL(opt_cache_oblivious)},
+	{NAME("trust_madvise"),	CTL(opt_trust_madvise)},
+	{NAME("confirm_conf"),	CTL(opt_confirm_conf)},
+	{NAME("hpa"),		CTL(opt_hpa)},
+	{NAME("hpa_slab_max_alloc"),	CTL(opt_hpa_slab_max_alloc)},
+	{NAME("hpa_hugification_threshold"),
+		CTL(opt_hpa_hugification_threshold)},
+	{NAME("hpa_hugify_delay_ms"), CTL(opt_hpa_hugify_delay_ms)},
+	{NAME("hpa_min_purge_interval_ms"), CTL(opt_hpa_min_purge_interval_ms)},
+	{NAME("hpa_dirty_mult"), CTL(opt_hpa_dirty_mult)},
+	{NAME("hpa_sec_nshards"),	CTL(opt_hpa_sec_nshards)},
+	{NAME("hpa_sec_max_alloc"),	CTL(opt_hpa_sec_max_alloc)},
+	{NAME("hpa_sec_max_bytes"),	CTL(opt_hpa_sec_max_bytes)},
+	{NAME("hpa_sec_bytes_after_flush"),
+		CTL(opt_hpa_sec_bytes_after_flush)},
+	{NAME("hpa_sec_batch_fill_extra"),
+		CTL(opt_hpa_sec_batch_fill_extra)},
+	{NAME("metadata_thp"),	CTL(opt_metadata_thp)},
+	{NAME("retain"),	CTL(opt_retain)},
+	{NAME("dss"),		CTL(opt_dss)},
+	{NAME("narenas"),	CTL(opt_narenas)},
+	{NAME("percpu_arena"),	CTL(opt_percpu_arena)},
+	{NAME("oversize_threshold"),	CTL(opt_oversize_threshold)},
+	{NAME("mutex_max_spin"),	CTL(opt_mutex_max_spin)},
+	{NAME("background_thread"),	CTL(opt_background_thread)},
+	{NAME("max_background_threads"),	CTL(opt_max_background_threads)},
+	{NAME("dirty_decay_ms"), CTL(opt_dirty_decay_ms)},
+	{NAME("muzzy_decay_ms"), CTL(opt_muzzy_decay_ms)},
+	{NAME("stats_print"),	CTL(opt_stats_print)},
+	{NAME("stats_print_opts"),	CTL(opt_stats_print_opts)},
+	{NAME("stats_interval"),	CTL(opt_stats_interval)},
+	{NAME("stats_interval_opts"),	CTL(opt_stats_interval_opts)},
+	{NAME("junk"),		CTL(opt_junk)},
+	{NAME("zero"),		CTL(opt_zero)},
+	{NAME("utrace"),	CTL(opt_utrace)},
+	{NAME("xmalloc"),	CTL(opt_xmalloc)},
+	{NAME("experimental_infallible_new"),
+		CTL(opt_experimental_infallible_new)},
+	{NAME("tcache"),	CTL(opt_tcache)},
+	{NAME("tcache_max"),	CTL(opt_tcache_max)},
+	{NAME("tcache_nslots_small_min"),
+		CTL(opt_tcache_nslots_small_min)},
+	{NAME("tcache_nslots_small_max"),
+		CTL(opt_tcache_nslots_small_max)},
+	{NAME("tcache_nslots_large"),	CTL(opt_tcache_nslots_large)},
+	{NAME("lg_tcache_nslots_mul"),	CTL(opt_lg_tcache_nslots_mul)},
+	{NAME("tcache_gc_incr_bytes"),	CTL(opt_tcache_gc_incr_bytes)},
+	{NAME("tcache_gc_delay_bytes"),	CTL(opt_tcache_gc_delay_bytes)},
+	{NAME("lg_tcache_flush_small_div"),
+		CTL(opt_lg_tcache_flush_small_div)},
+	{NAME("lg_tcache_flush_large_div"),
+		CTL(opt_lg_tcache_flush_large_div)},
+	{NAME("thp"),		CTL(opt_thp)},
+	{NAME("lg_extent_max_active_fit"), CTL(opt_lg_extent_max_active_fit)},
+	{NAME("prof"),		CTL(opt_prof)},
+	{NAME("prof_prefix"),	CTL(opt_prof_prefix)},
+	{NAME("prof_active"),	CTL(opt_prof_active)},
+	{NAME("prof_thread_active_init"), CTL(opt_prof_thread_active_init)},
+	{NAME("lg_prof_sample"), CTL(opt_lg_prof_sample)},
+	{NAME("lg_prof_interval"), CTL(opt_lg_prof_interval)},
+	{NAME("prof_gdump"),	CTL(opt_prof_gdump)},
+	{NAME("prof_final"),	CTL(opt_prof_final)},
+	{NAME("prof_leak"),	CTL(opt_prof_leak)},
+	{NAME("prof_leak_error"),	CTL(opt_prof_leak_error)},
+	{NAME("prof_accum"),	CTL(opt_prof_accum)},
+	{NAME("prof_recent_alloc_max"),	CTL(opt_prof_recent_alloc_max)},
+	{NAME("prof_stats"),	CTL(opt_prof_stats)},
+	{NAME("prof_sys_thread_name"),	CTL(opt_prof_sys_thread_name)},
+	{NAME("prof_time_resolution"),	CTL(opt_prof_time_res)},
+	{NAME("lg_san_uaf_align"),	CTL(opt_lg_san_uaf_align)},
+	{NAME("zero_realloc"),	CTL(opt_zero_realloc)}
+};
+
+static const ctl_named_node_t	tcache_node[] = {
+	{NAME("create"),	CTL(tcache_create)},
+	{NAME("flush"),		CTL(tcache_flush)},
+	{NAME("destroy"),	CTL(tcache_destroy)}
+};
+
+static const ctl_named_node_t arena_i_node[] = {
+	{NAME("initialized"),	CTL(arena_i_initialized)},
+	{NAME("decay"),		CTL(arena_i_decay)},
+	{NAME("purge"),		CTL(arena_i_purge)},
+	{NAME("reset"),		CTL(arena_i_reset)},
+	{NAME("destroy"),	CTL(arena_i_destroy)},
+	{NAME("dss"),		CTL(arena_i_dss)},
+	/*
+	 * Undocumented for now, since we anticipate an arena API in flux after
+	 * we cut the last 5-series release.
+	 */
+	{NAME("oversize_threshold"), CTL(arena_i_oversize_threshold)},
+	{NAME("dirty_decay_ms"), CTL(arena_i_dirty_decay_ms)},
+	{NAME("muzzy_decay_ms"), CTL(arena_i_muzzy_decay_ms)},
+	{NAME("extent_hooks"),	CTL(arena_i_extent_hooks)},
+	{NAME("retain_grow_limit"),	CTL(arena_i_retain_grow_limit)}
+};
+static const ctl_named_node_t super_arena_i_node[] = {
+	{NAME(""),		CHILD(named, arena_i)}
+};
+
+static const ctl_indexed_node_t arena_node[] = {
+	{INDEX(arena_i)}
+};
+
+static const ctl_named_node_t arenas_bin_i_node[] = {
+	{NAME("size"),		CTL(arenas_bin_i_size)},
+	{NAME("nregs"),		CTL(arenas_bin_i_nregs)},
+	{NAME("slab_size"),	CTL(arenas_bin_i_slab_size)},
+	{NAME("nshards"),	CTL(arenas_bin_i_nshards)}
+};
+static const ctl_named_node_t super_arenas_bin_i_node[] = {
+	{NAME(""),		CHILD(named, arenas_bin_i)}
+};
+
+static const ctl_indexed_node_t arenas_bin_node[] = {
+	{INDEX(arenas_bin_i)}
+};
+
+static const ctl_named_node_t arenas_lextent_i_node[] = {
+	{NAME("size"),		CTL(arenas_lextent_i_size)}
+};
+static const ctl_named_node_t super_arenas_lextent_i_node[] = {
+	{NAME(""),		CHILD(named, arenas_lextent_i)}
+};
+
+static const ctl_indexed_node_t arenas_lextent_node[] = {
+	{INDEX(arenas_lextent_i)}
+};
+
+static const ctl_named_node_t arenas_node[] = {
+	{NAME("narenas"),	CTL(arenas_narenas)},
+	{NAME("dirty_decay_ms"), CTL(arenas_dirty_decay_ms)},
+	{NAME("muzzy_decay_ms"), CTL(arenas_muzzy_decay_ms)},
+	{NAME("quantum"),	CTL(arenas_quantum)},
+	{NAME("page"),		CTL(arenas_page)},
+	{NAME("tcache_max"),	CTL(arenas_tcache_max)},
+	{NAME("nbins"),		CTL(arenas_nbins)},
+	{NAME("nhbins"),	CTL(arenas_nhbins)},
+	{NAME("bin"),		CHILD(indexed, arenas_bin)},
+	{NAME("nlextents"),	CTL(arenas_nlextents)},
+	{NAME("lextent"),	CHILD(indexed, arenas_lextent)},
+	{NAME("create"),	CTL(arenas_create)},
+	{NAME("lookup"),	CTL(arenas_lookup)}
+};
+
+static const ctl_named_node_t prof_stats_bins_i_node[] = {
+	{NAME("live"),		CTL(prof_stats_bins_i_live)},
+	{NAME("accum"),		CTL(prof_stats_bins_i_accum)}
+};
+
+static const ctl_named_node_t super_prof_stats_bins_i_node[] = {
+	{NAME(""),		CHILD(named, prof_stats_bins_i)}
+};
+
+static const ctl_indexed_node_t prof_stats_bins_node[] = {
+	{INDEX(prof_stats_bins_i)}
+};
+
+static const ctl_named_node_t prof_stats_lextents_i_node[] = {
+	{NAME("live"),		CTL(prof_stats_lextents_i_live)},
+	{NAME("accum"),		CTL(prof_stats_lextents_i_accum)}
+};
+
+static const ctl_named_node_t super_prof_stats_lextents_i_node[] = {
+	{NAME(""),		CHILD(named, prof_stats_lextents_i)}
+};
+
+static const ctl_indexed_node_t prof_stats_lextents_node[] = {
+	{INDEX(prof_stats_lextents_i)}
+};
+
+static const ctl_named_node_t	prof_stats_node[] = {
+	{NAME("bins"),		CHILD(indexed, prof_stats_bins)},
+	{NAME("lextents"),	CHILD(indexed, prof_stats_lextents)},
+};
+
+static const ctl_named_node_t	prof_node[] = {
+	{NAME("thread_active_init"), CTL(prof_thread_active_init)},
+	{NAME("active"),	CTL(prof_active)},
+	{NAME("dump"),		CTL(prof_dump)},
+	{NAME("gdump"),		CTL(prof_gdump)},
+	{NAME("prefix"),	CTL(prof_prefix)},
+	{NAME("reset"),		CTL(prof_reset)},
+	{NAME("interval"),	CTL(prof_interval)},
+	{NAME("lg_sample"),	CTL(lg_prof_sample)},
+	{NAME("log_start"),	CTL(prof_log_start)},
+	{NAME("log_stop"),	CTL(prof_log_stop)},
+	{NAME("stats"),		CHILD(named, prof_stats)}
+};
+
+static const ctl_named_node_t stats_arenas_i_small_node[] = {
+	{NAME("allocated"),	CTL(stats_arenas_i_small_allocated)},
+	{NAME("nmalloc"),	CTL(stats_arenas_i_small_nmalloc)},
+	{NAME("ndalloc"),	CTL(stats_arenas_i_small_ndalloc)},
+	{NAME("nrequests"),	CTL(stats_arenas_i_small_nrequests)},
+	{NAME("nfills"),	CTL(stats_arenas_i_small_nfills)},
+	{NAME("nflushes"),	CTL(stats_arenas_i_small_nflushes)}
+};
+
+static const ctl_named_node_t stats_arenas_i_large_node[] = {
+	{NAME("allocated"),	CTL(stats_arenas_i_large_allocated)},
+	{NAME("nmalloc"),	CTL(stats_arenas_i_large_nmalloc)},
+	{NAME("ndalloc"),	CTL(stats_arenas_i_large_ndalloc)},
+	{NAME("nrequests"),	CTL(stats_arenas_i_large_nrequests)},
+	{NAME("nfills"),	CTL(stats_arenas_i_large_nfills)},
+	{NAME("nflushes"),	CTL(stats_arenas_i_large_nflushes)}
+};
+
+#define MUTEX_PROF_DATA_NODE(prefix)					\
+static const ctl_named_node_t stats_##prefix##_node[] = {		\
+	{NAME("num_ops"),						\
+	 CTL(stats_##prefix##_num_ops)},				\
+	{NAME("num_wait"),						\
+	 CTL(stats_##prefix##_num_wait)},				\
+	{NAME("num_spin_acq"),						\
+	 CTL(stats_##prefix##_num_spin_acq)},				\
+	{NAME("num_owner_switch"),					\
+	 CTL(stats_##prefix##_num_owner_switch)},			\
+	{NAME("total_wait_time"),					\
+	 CTL(stats_##prefix##_total_wait_time)},			\
+	{NAME("max_wait_time"),						\
+	 CTL(stats_##prefix##_max_wait_time)},				\
+	{NAME("max_num_thds"),						\
+	 CTL(stats_##prefix##_max_num_thds)}				\
+	/* Note that # of current waiting thread not provided. */	\
+};
+
+MUTEX_PROF_DATA_NODE(arenas_i_bins_j_mutex)
+
+static const ctl_named_node_t stats_arenas_i_bins_j_node[] = {
+	{NAME("nmalloc"),	CTL(stats_arenas_i_bins_j_nmalloc)},
+	{NAME("ndalloc"),	CTL(stats_arenas_i_bins_j_ndalloc)},
+	{NAME("nrequests"),	CTL(stats_arenas_i_bins_j_nrequests)},
+	{NAME("curregs"),	CTL(stats_arenas_i_bins_j_curregs)},
+	{NAME("nfills"),	CTL(stats_arenas_i_bins_j_nfills)},
+	{NAME("nflushes"),	CTL(stats_arenas_i_bins_j_nflushes)},
+	{NAME("nslabs"),	CTL(stats_arenas_i_bins_j_nslabs)},
+	{NAME("nreslabs"),	CTL(stats_arenas_i_bins_j_nreslabs)},
+	{NAME("curslabs"),	CTL(stats_arenas_i_bins_j_curslabs)},
+	{NAME("nonfull_slabs"),	CTL(stats_arenas_i_bins_j_nonfull_slabs)},
+	{NAME("mutex"),		CHILD(named, stats_arenas_i_bins_j_mutex)}
+};
+
+static const ctl_named_node_t super_stats_arenas_i_bins_j_node[] = {
+	{NAME(""),		CHILD(named, stats_arenas_i_bins_j)}
+};
+
+static const ctl_indexed_node_t stats_arenas_i_bins_node[] = {
+	{INDEX(stats_arenas_i_bins_j)}
+};
+
+static const ctl_named_node_t stats_arenas_i_lextents_j_node[] = {
+	{NAME("nmalloc"),	CTL(stats_arenas_i_lextents_j_nmalloc)},
+	{NAME("ndalloc"),	CTL(stats_arenas_i_lextents_j_ndalloc)},
+	{NAME("nrequests"),	CTL(stats_arenas_i_lextents_j_nrequests)},
+	{NAME("curlextents"),	CTL(stats_arenas_i_lextents_j_curlextents)}
+};
+static const ctl_named_node_t super_stats_arenas_i_lextents_j_node[] = {
+	{NAME(""),		CHILD(named, stats_arenas_i_lextents_j)}
+};
+
+static const ctl_indexed_node_t stats_arenas_i_lextents_node[] = {
+	{INDEX(stats_arenas_i_lextents_j)}
+};
+
+static const ctl_named_node_t stats_arenas_i_extents_j_node[] = {
+	{NAME("ndirty"),	CTL(stats_arenas_i_extents_j_ndirty)},
+	{NAME("nmuzzy"),	CTL(stats_arenas_i_extents_j_nmuzzy)},
+	{NAME("nretained"),	CTL(stats_arenas_i_extents_j_nretained)},
+	{NAME("dirty_bytes"),	CTL(stats_arenas_i_extents_j_dirty_bytes)},
+	{NAME("muzzy_bytes"),	CTL(stats_arenas_i_extents_j_muzzy_bytes)},
+	{NAME("retained_bytes"), CTL(stats_arenas_i_extents_j_retained_bytes)}
+};
+
+static const ctl_named_node_t super_stats_arenas_i_extents_j_node[] = {
+	{NAME(""),		CHILD(named, stats_arenas_i_extents_j)}
+};
+
+static const ctl_indexed_node_t stats_arenas_i_extents_node[] = {
+	{INDEX(stats_arenas_i_extents_j)}
+};
+
+#define OP(mtx)  MUTEX_PROF_DATA_NODE(arenas_i_mutexes_##mtx)
+MUTEX_PROF_ARENA_MUTEXES
+#undef OP
+
+static const ctl_named_node_t stats_arenas_i_mutexes_node[] = {
+#define OP(mtx) {NAME(#mtx), CHILD(named, stats_arenas_i_mutexes_##mtx)},
+MUTEX_PROF_ARENA_MUTEXES
+#undef OP
+};
+
+static const ctl_named_node_t stats_arenas_i_hpa_shard_full_slabs_node[] = {
+	{NAME("npageslabs_nonhuge"),
+		CTL(stats_arenas_i_hpa_shard_full_slabs_npageslabs_nonhuge)},
+	{NAME("npageslabs_huge"),
+		CTL(stats_arenas_i_hpa_shard_full_slabs_npageslabs_huge)},
+	{NAME("nactive_nonhuge"),
+		CTL(stats_arenas_i_hpa_shard_full_slabs_nactive_nonhuge)},
+	{NAME("nactive_huge"),
+		CTL(stats_arenas_i_hpa_shard_full_slabs_nactive_huge)},
+	{NAME("ndirty_nonhuge"),
+		CTL(stats_arenas_i_hpa_shard_full_slabs_ndirty_nonhuge)},
+	{NAME("ndirty_huge"),
+		CTL(stats_arenas_i_hpa_shard_full_slabs_ndirty_huge)}
+};
+
+static const ctl_named_node_t stats_arenas_i_hpa_shard_empty_slabs_node[] = {
+	{NAME("npageslabs_nonhuge"),
+		CTL(stats_arenas_i_hpa_shard_empty_slabs_npageslabs_nonhuge)},
+	{NAME("npageslabs_huge"),
+		CTL(stats_arenas_i_hpa_shard_empty_slabs_npageslabs_huge)},
+	{NAME("nactive_nonhuge"),
+		CTL(stats_arenas_i_hpa_shard_empty_slabs_nactive_nonhuge)},
+	{NAME("nactive_huge"),
+		CTL(stats_arenas_i_hpa_shard_empty_slabs_nactive_huge)},
+	{NAME("ndirty_nonhuge"),
+		CTL(stats_arenas_i_hpa_shard_empty_slabs_ndirty_nonhuge)},
+	{NAME("ndirty_huge"),
+		CTL(stats_arenas_i_hpa_shard_empty_slabs_ndirty_huge)}
+};
+
+static const ctl_named_node_t stats_arenas_i_hpa_shard_nonfull_slabs_j_node[] = {
+	{NAME("npageslabs_nonhuge"),
+		CTL(stats_arenas_i_hpa_shard_nonfull_slabs_j_npageslabs_nonhuge)},
+	{NAME("npageslabs_huge"),
+		CTL(stats_arenas_i_hpa_shard_nonfull_slabs_j_npageslabs_huge)},
+	{NAME("nactive_nonhuge"),
+		CTL(stats_arenas_i_hpa_shard_nonfull_slabs_j_nactive_nonhuge)},
+	{NAME("nactive_huge"),
+		CTL(stats_arenas_i_hpa_shard_nonfull_slabs_j_nactive_huge)},
+	{NAME("ndirty_nonhuge"),
+		CTL(stats_arenas_i_hpa_shard_nonfull_slabs_j_ndirty_nonhuge)},
+	{NAME("ndirty_huge"),
+		CTL(stats_arenas_i_hpa_shard_nonfull_slabs_j_ndirty_huge)}
+};
+
+static const ctl_named_node_t super_stats_arenas_i_hpa_shard_nonfull_slabs_j_node[] = {
+	{NAME(""),
+		CHILD(named, stats_arenas_i_hpa_shard_nonfull_slabs_j)}
+};
+
+static const ctl_indexed_node_t stats_arenas_i_hpa_shard_nonfull_slabs_node[] =
+{
+	{INDEX(stats_arenas_i_hpa_shard_nonfull_slabs_j)}
+};
+
+static const ctl_named_node_t stats_arenas_i_hpa_shard_node[] = {
+	{NAME("full_slabs"),	CHILD(named,
+	    stats_arenas_i_hpa_shard_full_slabs)},
+	{NAME("empty_slabs"),	CHILD(named,
+	    stats_arenas_i_hpa_shard_empty_slabs)},
+	{NAME("nonfull_slabs"),	CHILD(indexed,
+	    stats_arenas_i_hpa_shard_nonfull_slabs)},
+
+	{NAME("npurge_passes"),	CTL(stats_arenas_i_hpa_shard_npurge_passes)},
+	{NAME("npurges"),	CTL(stats_arenas_i_hpa_shard_npurges)},
+	{NAME("nhugifies"),	CTL(stats_arenas_i_hpa_shard_nhugifies)},
+	{NAME("ndehugifies"),	CTL(stats_arenas_i_hpa_shard_ndehugifies)}
+};
+
+static const ctl_named_node_t stats_arenas_i_node[] = {
+	{NAME("nthreads"),	CTL(stats_arenas_i_nthreads)},
+	{NAME("uptime"),	CTL(stats_arenas_i_uptime)},
+	{NAME("dss"),		CTL(stats_arenas_i_dss)},
+	{NAME("dirty_decay_ms"), CTL(stats_arenas_i_dirty_decay_ms)},
+	{NAME("muzzy_decay_ms"), CTL(stats_arenas_i_muzzy_decay_ms)},
+	{NAME("pactive"),	CTL(stats_arenas_i_pactive)},
+	{NAME("pdirty"),	CTL(stats_arenas_i_pdirty)},
+	{NAME("pmuzzy"),	CTL(stats_arenas_i_pmuzzy)},
+	{NAME("mapped"),	CTL(stats_arenas_i_mapped)},
+	{NAME("retained"),	CTL(stats_arenas_i_retained)},
+	{NAME("extent_avail"),	CTL(stats_arenas_i_extent_avail)},
+	{NAME("dirty_npurge"),	CTL(stats_arenas_i_dirty_npurge)},
+	{NAME("dirty_nmadvise"), CTL(stats_arenas_i_dirty_nmadvise)},
+	{NAME("dirty_purged"),	CTL(stats_arenas_i_dirty_purged)},
+	{NAME("muzzy_npurge"),	CTL(stats_arenas_i_muzzy_npurge)},
+	{NAME("muzzy_nmadvise"), CTL(stats_arenas_i_muzzy_nmadvise)},
+	{NAME("muzzy_purged"),	CTL(stats_arenas_i_muzzy_purged)},
+	{NAME("base"),		CTL(stats_arenas_i_base)},
+	{NAME("internal"),	CTL(stats_arenas_i_internal)},
+	{NAME("metadata_thp"),	CTL(stats_arenas_i_metadata_thp)},
+	{NAME("tcache_bytes"),	CTL(stats_arenas_i_tcache_bytes)},
+	{NAME("tcache_stashed_bytes"),
+	    CTL(stats_arenas_i_tcache_stashed_bytes)},
+	{NAME("resident"),	CTL(stats_arenas_i_resident)},
+	{NAME("abandoned_vm"),	CTL(stats_arenas_i_abandoned_vm)},
+	{NAME("hpa_sec_bytes"),	CTL(stats_arenas_i_hpa_sec_bytes)},
+	{NAME("small"),		CHILD(named, stats_arenas_i_small)},
+	{NAME("large"),		CHILD(named, stats_arenas_i_large)},
+	{NAME("bins"),		CHILD(indexed, stats_arenas_i_bins)},
+	{NAME("lextents"),	CHILD(indexed, stats_arenas_i_lextents)},
+	{NAME("extents"),	CHILD(indexed, stats_arenas_i_extents)},
+	{NAME("mutexes"),	CHILD(named, stats_arenas_i_mutexes)},
+	{NAME("hpa_shard"),	CHILD(named, stats_arenas_i_hpa_shard)}
+};
+static const ctl_named_node_t super_stats_arenas_i_node[] = {
+	{NAME(""),		CHILD(named, stats_arenas_i)}
+};
+
+static const ctl_indexed_node_t stats_arenas_node[] = {
+	{INDEX(stats_arenas_i)}
+};
+
+static const ctl_named_node_t stats_background_thread_node[] = {
+	{NAME("num_threads"),	CTL(stats_background_thread_num_threads)},
+	{NAME("num_runs"),	CTL(stats_background_thread_num_runs)},
+	{NAME("run_interval"),	CTL(stats_background_thread_run_interval)}
+};
+
+#define OP(mtx) MUTEX_PROF_DATA_NODE(mutexes_##mtx)
+MUTEX_PROF_GLOBAL_MUTEXES
+#undef OP
+
+static const ctl_named_node_t stats_mutexes_node[] = {
+#define OP(mtx) {NAME(#mtx), CHILD(named, stats_mutexes_##mtx)},
+MUTEX_PROF_GLOBAL_MUTEXES
+#undef OP
+	{NAME("reset"),		CTL(stats_mutexes_reset)}
+};
+#undef MUTEX_PROF_DATA_NODE
+
+static const ctl_named_node_t stats_node[] = {
+	{NAME("allocated"),	CTL(stats_allocated)},
+	{NAME("active"),	CTL(stats_active)},
+	{NAME("metadata"),	CTL(stats_metadata)},
+	{NAME("metadata_thp"),	CTL(stats_metadata_thp)},
+	{NAME("resident"),	CTL(stats_resident)},
+	{NAME("mapped"),	CTL(stats_mapped)},
+	{NAME("retained"),	CTL(stats_retained)},
+	{NAME("background_thread"),
+	 CHILD(named, stats_background_thread)},
+	{NAME("mutexes"),	CHILD(named, stats_mutexes)},
+	{NAME("arenas"),	CHILD(indexed, stats_arenas)},
+	{NAME("zero_reallocs"),	CTL(stats_zero_reallocs)},
+};
+
+static const ctl_named_node_t experimental_hooks_node[] = {
+	{NAME("install"),	CTL(experimental_hooks_install)},
+	{NAME("remove"),	CTL(experimental_hooks_remove)},
+	{NAME("prof_backtrace"),	CTL(experimental_hooks_prof_backtrace)},
+	{NAME("prof_dump"),	CTL(experimental_hooks_prof_dump)},
+	{NAME("safety_check_abort"),	CTL(experimental_hooks_safety_check_abort)},
+};
+
+static const ctl_named_node_t experimental_thread_node[] = {
+	{NAME("activity_callback"),
+		CTL(experimental_thread_activity_callback)}
+};
+
+static const ctl_named_node_t experimental_utilization_node[] = {
+	{NAME("query"),		CTL(experimental_utilization_query)},
+	{NAME("batch_query"),	CTL(experimental_utilization_batch_query)}
+};
+
+static const ctl_named_node_t experimental_arenas_i_node[] = {
+	{NAME("pactivep"),	CTL(experimental_arenas_i_pactivep)}
+};
+static const ctl_named_node_t super_experimental_arenas_i_node[] = {
+	{NAME(""),		CHILD(named, experimental_arenas_i)}
+};
+
+static const ctl_indexed_node_t experimental_arenas_node[] = {
+	{INDEX(experimental_arenas_i)}
+};
+
+static const ctl_named_node_t experimental_prof_recent_node[] = {
+	{NAME("alloc_max"),	CTL(experimental_prof_recent_alloc_max)},
+	{NAME("alloc_dump"),	CTL(experimental_prof_recent_alloc_dump)},
+};
+
+static const ctl_named_node_t experimental_node[] = {
+	{NAME("hooks"),		CHILD(named, experimental_hooks)},
+	{NAME("utilization"),	CHILD(named, experimental_utilization)},
+	{NAME("arenas"),	CHILD(indexed, experimental_arenas)},
+	{NAME("arenas_create_ext"),	CTL(experimental_arenas_create_ext)},
+	{NAME("prof_recent"),	CHILD(named, experimental_prof_recent)},
+	{NAME("batch_alloc"),	CTL(experimental_batch_alloc)},
+	{NAME("thread"),	CHILD(named, experimental_thread)}
+};
+
+static const ctl_named_node_t	root_node[] = {
+	{NAME("version"),	CTL(version)},
+	{NAME("epoch"),		CTL(epoch)},
+	{NAME("background_thread"),	CTL(background_thread)},
+	{NAME("max_background_threads"),	CTL(max_background_threads)},
+	{NAME("thread"),	CHILD(named, thread)},
+	{NAME("config"),	CHILD(named, config)},
+	{NAME("opt"),		CHILD(named, opt)},
+	{NAME("tcache"),	CHILD(named, tcache)},
+	{NAME("arena"),		CHILD(indexed, arena)},
+	{NAME("arenas"),	CHILD(named, arenas)},
+	{NAME("prof"),		CHILD(named, prof)},
+	{NAME("stats"),		CHILD(named, stats)},
+	{NAME("experimental"),	CHILD(named, experimental)}
+};
+static const ctl_named_node_t super_root_node[] = {
+	{NAME(""),		CHILD(named, root)}
+};
+
+#undef NAME
+#undef CHILD
+#undef CTL
+#undef INDEX
+
+/******************************************************************************/
+
+/*
+ * Sets *dst + *src non-atomically.  This is safe, since everything is
+ * synchronized by the ctl mutex.
+ */
+static void
+ctl_accum_locked_u64(locked_u64_t *dst, locked_u64_t *src) {
+	locked_inc_u64_unsynchronized(dst,
+	    locked_read_u64_unsynchronized(src));
+}
+
+static void
+ctl_accum_atomic_zu(atomic_zu_t *dst, atomic_zu_t *src) {
+	size_t cur_dst = atomic_load_zu(dst, ATOMIC_RELAXED);
+	size_t cur_src = atomic_load_zu(src, ATOMIC_RELAXED);
+	atomic_store_zu(dst, cur_dst + cur_src, ATOMIC_RELAXED);
+}
+
+/******************************************************************************/
+
+static unsigned
+arenas_i2a_impl(size_t i, bool compat, bool validate) {
+	unsigned a;
+
+	switch (i) {
+	case MALLCTL_ARENAS_ALL:
+		a = 0;
+		break;
+	case MALLCTL_ARENAS_DESTROYED:
+		a = 1;
+		break;
+	default:
+		if (compat && i == ctl_arenas->narenas) {
+			/*
+			 * Provide deprecated backward compatibility for
+			 * accessing the merged stats at index narenas rather
+			 * than via MALLCTL_ARENAS_ALL.  This is scheduled for
+			 * removal in 6.0.0.
+			 */
+			a = 0;
+		} else if (validate && i >= ctl_arenas->narenas) {
+			a = UINT_MAX;
+		} else {
+			/*
+			 * This function should never be called for an index
+			 * more than one past the range of indices that have
+			 * initialized ctl data.
+			 */
+			assert(i < ctl_arenas->narenas || (!validate && i ==
+			    ctl_arenas->narenas));
+			a = (unsigned)i + 2;
+		}
+		break;
+	}
+
+	return a;
+}
+
+static unsigned
+arenas_i2a(size_t i) {
+	return arenas_i2a_impl(i, true, false);
+}
+
+static ctl_arena_t *
+arenas_i_impl(tsd_t *tsd, size_t i, bool compat, bool init) {
+	ctl_arena_t *ret;
+
+	assert(!compat || !init);
+
+	ret = ctl_arenas->arenas[arenas_i2a_impl(i, compat, false)];
+	if (init && ret == NULL) {
+		if (config_stats) {
+			struct container_s {
+				ctl_arena_t		ctl_arena;
+				ctl_arena_stats_t	astats;
+			};
+			struct container_s *cont =
+			    (struct container_s *)base_alloc(tsd_tsdn(tsd),
+			    b0get(), sizeof(struct container_s), QUANTUM);
+			if (cont == NULL) {
+				return NULL;
+			}
+			ret = &cont->ctl_arena;
+			ret->astats = &cont->astats;
+		} else {
+			ret = (ctl_arena_t *)base_alloc(tsd_tsdn(tsd), b0get(),
+			    sizeof(ctl_arena_t), QUANTUM);
+			if (ret == NULL) {
+				return NULL;
+			}
+		}
+		ret->arena_ind = (unsigned)i;
+		ctl_arenas->arenas[arenas_i2a_impl(i, compat, false)] = ret;
+	}
+
+	assert(ret == NULL || arenas_i2a(ret->arena_ind) == arenas_i2a(i));
+	return ret;
+}
+
+static ctl_arena_t *
+arenas_i(size_t i) {
+	ctl_arena_t *ret = arenas_i_impl(tsd_fetch(), i, true, false);
+	assert(ret != NULL);
+	return ret;
+}
+
+static void
+ctl_arena_clear(ctl_arena_t *ctl_arena) {
+	ctl_arena->nthreads = 0;
+	ctl_arena->dss = dss_prec_names[dss_prec_limit];
+	ctl_arena->dirty_decay_ms = -1;
+	ctl_arena->muzzy_decay_ms = -1;
+	ctl_arena->pactive = 0;
+	ctl_arena->pdirty = 0;
+	ctl_arena->pmuzzy = 0;
+	if (config_stats) {
+		memset(&ctl_arena->astats->astats, 0, sizeof(arena_stats_t));
+		ctl_arena->astats->allocated_small = 0;
+		ctl_arena->astats->nmalloc_small = 0;
+		ctl_arena->astats->ndalloc_small = 0;
+		ctl_arena->astats->nrequests_small = 0;
+		ctl_arena->astats->nfills_small = 0;
+		ctl_arena->astats->nflushes_small = 0;
+		memset(ctl_arena->astats->bstats, 0, SC_NBINS *
+		    sizeof(bin_stats_data_t));
+		memset(ctl_arena->astats->lstats, 0, (SC_NSIZES - SC_NBINS) *
+		    sizeof(arena_stats_large_t));
+		memset(ctl_arena->astats->estats, 0, SC_NPSIZES *
+		    sizeof(pac_estats_t));
+		memset(&ctl_arena->astats->hpastats, 0,
+		    sizeof(hpa_shard_stats_t));
+		memset(&ctl_arena->astats->secstats, 0,
+		    sizeof(sec_stats_t));
+	}
+}
+
+static void
+ctl_arena_stats_amerge(tsdn_t *tsdn, ctl_arena_t *ctl_arena, arena_t *arena) {
+	unsigned i;
+
+	if (config_stats) {
+		arena_stats_merge(tsdn, arena, &ctl_arena->nthreads,
+		    &ctl_arena->dss, &ctl_arena->dirty_decay_ms,
+		    &ctl_arena->muzzy_decay_ms, &ctl_arena->pactive,
+		    &ctl_arena->pdirty, &ctl_arena->pmuzzy,
+		    &ctl_arena->astats->astats, ctl_arena->astats->bstats,
+		    ctl_arena->astats->lstats, ctl_arena->astats->estats,
+		    &ctl_arena->astats->hpastats, &ctl_arena->astats->secstats);
+
+		for (i = 0; i < SC_NBINS; i++) {
+			bin_stats_t *bstats =
+			    &ctl_arena->astats->bstats[i].stats_data;
+			ctl_arena->astats->allocated_small += bstats->curregs *
+			    sz_index2size(i);
+			ctl_arena->astats->nmalloc_small += bstats->nmalloc;
+			ctl_arena->astats->ndalloc_small += bstats->ndalloc;
+			ctl_arena->astats->nrequests_small += bstats->nrequests;
+			ctl_arena->astats->nfills_small += bstats->nfills;
+			ctl_arena->astats->nflushes_small += bstats->nflushes;
+		}
+	} else {
+		arena_basic_stats_merge(tsdn, arena, &ctl_arena->nthreads,
+		    &ctl_arena->dss, &ctl_arena->dirty_decay_ms,
+		    &ctl_arena->muzzy_decay_ms, &ctl_arena->pactive,
+		    &ctl_arena->pdirty, &ctl_arena->pmuzzy);
+	}
+}
+
+static void
+ctl_arena_stats_sdmerge(ctl_arena_t *ctl_sdarena, ctl_arena_t *ctl_arena,
+    bool destroyed) {
+	unsigned i;
+
+	if (!destroyed) {
+		ctl_sdarena->nthreads += ctl_arena->nthreads;
+		ctl_sdarena->pactive += ctl_arena->pactive;
+		ctl_sdarena->pdirty += ctl_arena->pdirty;
+		ctl_sdarena->pmuzzy += ctl_arena->pmuzzy;
+	} else {
+		assert(ctl_arena->nthreads == 0);
+		assert(ctl_arena->pactive == 0);
+		assert(ctl_arena->pdirty == 0);
+		assert(ctl_arena->pmuzzy == 0);
+	}
+
+	if (config_stats) {
+		ctl_arena_stats_t *sdstats = ctl_sdarena->astats;
+		ctl_arena_stats_t *astats = ctl_arena->astats;
+
+		if (!destroyed) {
+			sdstats->astats.mapped += astats->astats.mapped;
+			sdstats->astats.pa_shard_stats.pac_stats.retained
+			    += astats->astats.pa_shard_stats.pac_stats.retained;
+			sdstats->astats.pa_shard_stats.edata_avail
+			    += astats->astats.pa_shard_stats.edata_avail;
+		}
+
+		ctl_accum_locked_u64(
+		    &sdstats->astats.pa_shard_stats.pac_stats.decay_dirty.npurge,
+		    &astats->astats.pa_shard_stats.pac_stats.decay_dirty.npurge);
+		ctl_accum_locked_u64(
+		    &sdstats->astats.pa_shard_stats.pac_stats.decay_dirty.nmadvise,
+		    &astats->astats.pa_shard_stats.pac_stats.decay_dirty.nmadvise);
+		ctl_accum_locked_u64(
+		    &sdstats->astats.pa_shard_stats.pac_stats.decay_dirty.purged,
+		    &astats->astats.pa_shard_stats.pac_stats.decay_dirty.purged);
+
+		ctl_accum_locked_u64(
+		    &sdstats->astats.pa_shard_stats.pac_stats.decay_muzzy.npurge,
+		    &astats->astats.pa_shard_stats.pac_stats.decay_muzzy.npurge);
+		ctl_accum_locked_u64(
+		    &sdstats->astats.pa_shard_stats.pac_stats.decay_muzzy.nmadvise,
+		    &astats->astats.pa_shard_stats.pac_stats.decay_muzzy.nmadvise);
+		ctl_accum_locked_u64(
+		    &sdstats->astats.pa_shard_stats.pac_stats.decay_muzzy.purged,
+		    &astats->astats.pa_shard_stats.pac_stats.decay_muzzy.purged);
+
+#define OP(mtx) malloc_mutex_prof_merge(				\
+		    &(sdstats->astats.mutex_prof_data[			\
+		        arena_prof_mutex_##mtx]),			\
+		    &(astats->astats.mutex_prof_data[			\
+		        arena_prof_mutex_##mtx]));
+MUTEX_PROF_ARENA_MUTEXES
+#undef OP
+		if (!destroyed) {
+			sdstats->astats.base += astats->astats.base;
+			sdstats->astats.resident += astats->astats.resident;
+			sdstats->astats.metadata_thp += astats->astats.metadata_thp;
+			ctl_accum_atomic_zu(&sdstats->astats.internal,
+			    &astats->astats.internal);
+		} else {
+			assert(atomic_load_zu(
+			    &astats->astats.internal, ATOMIC_RELAXED) == 0);
+		}
+
+		if (!destroyed) {
+			sdstats->allocated_small += astats->allocated_small;
+		} else {
+			assert(astats->allocated_small == 0);
+		}
+		sdstats->nmalloc_small += astats->nmalloc_small;
+		sdstats->ndalloc_small += astats->ndalloc_small;
+		sdstats->nrequests_small += astats->nrequests_small;
+		sdstats->nfills_small += astats->nfills_small;
+		sdstats->nflushes_small += astats->nflushes_small;
+
+		if (!destroyed) {
+			sdstats->astats.allocated_large +=
+			    astats->astats.allocated_large;
+		} else {
+			assert(astats->astats.allocated_large == 0);
+		}
+		sdstats->astats.nmalloc_large += astats->astats.nmalloc_large;
+		sdstats->astats.ndalloc_large += astats->astats.ndalloc_large;
+		sdstats->astats.nrequests_large
+		    += astats->astats.nrequests_large;
+		sdstats->astats.nflushes_large += astats->astats.nflushes_large;
+		ctl_accum_atomic_zu(
+		    &sdstats->astats.pa_shard_stats.pac_stats.abandoned_vm,
+		    &astats->astats.pa_shard_stats.pac_stats.abandoned_vm);
+
+		sdstats->astats.tcache_bytes += astats->astats.tcache_bytes;
+		sdstats->astats.tcache_stashed_bytes +=
+		    astats->astats.tcache_stashed_bytes;
+
+		if (ctl_arena->arena_ind == 0) {
+			sdstats->astats.uptime = astats->astats.uptime;
+		}
+
+		/* Merge bin stats. */
+		for (i = 0; i < SC_NBINS; i++) {
+			bin_stats_t *bstats = &astats->bstats[i].stats_data;
+			bin_stats_t *merged = &sdstats->bstats[i].stats_data;
+			merged->nmalloc += bstats->nmalloc;
+			merged->ndalloc += bstats->ndalloc;
+			merged->nrequests += bstats->nrequests;
+			if (!destroyed) {
+				merged->curregs += bstats->curregs;
+			} else {
+				assert(bstats->curregs == 0);
+			}
+			merged->nfills += bstats->nfills;
+			merged->nflushes += bstats->nflushes;
+			merged->nslabs += bstats->nslabs;
+			merged->reslabs += bstats->reslabs;
+			if (!destroyed) {
+				merged->curslabs += bstats->curslabs;
+				merged->nonfull_slabs += bstats->nonfull_slabs;
+			} else {
+				assert(bstats->curslabs == 0);
+				assert(bstats->nonfull_slabs == 0);
+			}
+			malloc_mutex_prof_merge(&sdstats->bstats[i].mutex_data,
+			    &astats->bstats[i].mutex_data);
+		}
+
+		/* Merge stats for large allocations. */
+		for (i = 0; i < SC_NSIZES - SC_NBINS; i++) {
+			ctl_accum_locked_u64(&sdstats->lstats[i].nmalloc,
+			    &astats->lstats[i].nmalloc);
+			ctl_accum_locked_u64(&sdstats->lstats[i].ndalloc,
+			    &astats->lstats[i].ndalloc);
+			ctl_accum_locked_u64(&sdstats->lstats[i].nrequests,
+			    &astats->lstats[i].nrequests);
+			if (!destroyed) {
+				sdstats->lstats[i].curlextents +=
+				    astats->lstats[i].curlextents;
+			} else {
+				assert(astats->lstats[i].curlextents == 0);
+			}
+		}
+
+		/* Merge extents stats. */
+		for (i = 0; i < SC_NPSIZES; i++) {
+			sdstats->estats[i].ndirty += astats->estats[i].ndirty;
+			sdstats->estats[i].nmuzzy += astats->estats[i].nmuzzy;
+			sdstats->estats[i].nretained
+			    += astats->estats[i].nretained;
+			sdstats->estats[i].dirty_bytes
+			    += astats->estats[i].dirty_bytes;
+			sdstats->estats[i].muzzy_bytes
+			    += astats->estats[i].muzzy_bytes;
+			sdstats->estats[i].retained_bytes
+			    += astats->estats[i].retained_bytes;
+		}
+
+		/* Merge HPA stats. */
+		hpa_shard_stats_accum(&sdstats->hpastats, &astats->hpastats);
+		sec_stats_accum(&sdstats->secstats, &astats->secstats);
+	}
+}
+
+static void
+ctl_arena_refresh(tsdn_t *tsdn, arena_t *arena, ctl_arena_t *ctl_sdarena,
+    unsigned i, bool destroyed) {
+	ctl_arena_t *ctl_arena = arenas_i(i);
+
+	ctl_arena_clear(ctl_arena);
+	ctl_arena_stats_amerge(tsdn, ctl_arena, arena);
+	/* Merge into sum stats as well. */
+	ctl_arena_stats_sdmerge(ctl_sdarena, ctl_arena, destroyed);
+}
+
+static unsigned
+ctl_arena_init(tsd_t *tsd, const arena_config_t *config) {
+	unsigned arena_ind;
+	ctl_arena_t *ctl_arena;
+
+	if ((ctl_arena = ql_last(&ctl_arenas->destroyed, destroyed_link)) !=
+	    NULL) {
+		ql_remove(&ctl_arenas->destroyed, ctl_arena, destroyed_link);
+		arena_ind = ctl_arena->arena_ind;
+	} else {
+		arena_ind = ctl_arenas->narenas;
+	}
+
+	/* Trigger stats allocation. */
+	if (arenas_i_impl(tsd, arena_ind, false, true) == NULL) {
+		return UINT_MAX;
+	}
+
+	/* Initialize new arena. */
+	if (arena_init(tsd_tsdn(tsd), arena_ind, config) == NULL) {
+		return UINT_MAX;
+	}
+
+	if (arena_ind == ctl_arenas->narenas) {
+		ctl_arenas->narenas++;
+	}
+
+	return arena_ind;
+}
+
+static void
+ctl_background_thread_stats_read(tsdn_t *tsdn) {
+	background_thread_stats_t *stats = &ctl_stats->background_thread;
+	if (!have_background_thread ||
+	    background_thread_stats_read(tsdn, stats)) {
+		memset(stats, 0, sizeof(background_thread_stats_t));
+		nstime_init_zero(&stats->run_interval);
+	}
+	malloc_mutex_prof_copy(
+	    &ctl_stats->mutex_prof_data[global_prof_mutex_max_per_bg_thd],
+	    &stats->max_counter_per_bg_thd);
+}
+
+static void
+ctl_refresh(tsdn_t *tsdn) {
+	unsigned i;
+	ctl_arena_t *ctl_sarena = arenas_i(MALLCTL_ARENAS_ALL);
+	VARIABLE_ARRAY(arena_t *, tarenas, ctl_arenas->narenas);
+
+	/*
+	 * Clear sum stats, since they will be merged into by
+	 * ctl_arena_refresh().
+	 */
+	ctl_arena_clear(ctl_sarena);
+
+	for (i = 0; i < ctl_arenas->narenas; i++) {
+		tarenas[i] = arena_get(tsdn, i, false);
+	}
+
+	for (i = 0; i < ctl_arenas->narenas; i++) {
+		ctl_arena_t *ctl_arena = arenas_i(i);
+		bool initialized = (tarenas[i] != NULL);
+
+		ctl_arena->initialized = initialized;
+		if (initialized) {
+			ctl_arena_refresh(tsdn, tarenas[i], ctl_sarena, i,
+			    false);
+		}
+	}
+
+	if (config_stats) {
+		ctl_stats->allocated = ctl_sarena->astats->allocated_small +
+		    ctl_sarena->astats->astats.allocated_large;
+		ctl_stats->active = (ctl_sarena->pactive << LG_PAGE);
+		ctl_stats->metadata = ctl_sarena->astats->astats.base +
+		    atomic_load_zu(&ctl_sarena->astats->astats.internal,
+			ATOMIC_RELAXED);
+		ctl_stats->resident = ctl_sarena->astats->astats.resident;
+		ctl_stats->metadata_thp =
+		    ctl_sarena->astats->astats.metadata_thp;
+		ctl_stats->mapped = ctl_sarena->astats->astats.mapped;
+		ctl_stats->retained = ctl_sarena->astats->astats
+		    .pa_shard_stats.pac_stats.retained;
+
+		ctl_background_thread_stats_read(tsdn);
+
+#define READ_GLOBAL_MUTEX_PROF_DATA(i, mtx)				\
+    malloc_mutex_lock(tsdn, &mtx);					\
+    malloc_mutex_prof_read(tsdn, &ctl_stats->mutex_prof_data[i], &mtx);	\
+    malloc_mutex_unlock(tsdn, &mtx);
+
+		if (config_prof && opt_prof) {
+			READ_GLOBAL_MUTEX_PROF_DATA(
+			    global_prof_mutex_prof, bt2gctx_mtx);
+			READ_GLOBAL_MUTEX_PROF_DATA(
+			    global_prof_mutex_prof_thds_data, tdatas_mtx);
+			READ_GLOBAL_MUTEX_PROF_DATA(
+			    global_prof_mutex_prof_dump, prof_dump_mtx);
+			READ_GLOBAL_MUTEX_PROF_DATA(
+			    global_prof_mutex_prof_recent_alloc,
+			    prof_recent_alloc_mtx);
+			READ_GLOBAL_MUTEX_PROF_DATA(
+			    global_prof_mutex_prof_recent_dump,
+			    prof_recent_dump_mtx);
+			READ_GLOBAL_MUTEX_PROF_DATA(
+			    global_prof_mutex_prof_stats, prof_stats_mtx);
+		}
+		if (have_background_thread) {
+			READ_GLOBAL_MUTEX_PROF_DATA(
+			    global_prof_mutex_background_thread,
+			    background_thread_lock);
+		} else {
+			memset(&ctl_stats->mutex_prof_data[
+			    global_prof_mutex_background_thread], 0,
+			    sizeof(mutex_prof_data_t));
+		}
+		/* We own ctl mutex already. */
+		malloc_mutex_prof_read(tsdn,
+		    &ctl_stats->mutex_prof_data[global_prof_mutex_ctl],
+		    &ctl_mtx);
+#undef READ_GLOBAL_MUTEX_PROF_DATA
+	}
+	ctl_arenas->epoch++;
+}
+
+static bool
+ctl_init(tsd_t *tsd) {
+	bool ret;
+	tsdn_t *tsdn = tsd_tsdn(tsd);
+
+	malloc_mutex_lock(tsdn, &ctl_mtx);
+	if (!ctl_initialized) {
+		ctl_arena_t *ctl_sarena, *ctl_darena;
+		unsigned i;
+
+		/*
+		 * Allocate demand-zeroed space for pointers to the full
+		 * range of supported arena indices.
+		 */
+		if (ctl_arenas == NULL) {
+			ctl_arenas = (ctl_arenas_t *)base_alloc(tsdn,
+			    b0get(), sizeof(ctl_arenas_t), QUANTUM);
+			if (ctl_arenas == NULL) {
+				ret = true;
+				goto label_return;
+			}
+		}
+
+		if (config_stats && ctl_stats == NULL) {
+			ctl_stats = (ctl_stats_t *)base_alloc(tsdn, b0get(),
+			    sizeof(ctl_stats_t), QUANTUM);
+			if (ctl_stats == NULL) {
+				ret = true;
+				goto label_return;
+			}
+		}
+
+		/*
+		 * Allocate space for the current full range of arenas
+		 * here rather than doing it lazily elsewhere, in order
+		 * to limit when OOM-caused errors can occur.
+		 */
+		if ((ctl_sarena = arenas_i_impl(tsd, MALLCTL_ARENAS_ALL, false,
+		    true)) == NULL) {
+			ret = true;
+			goto label_return;
+		}
+		ctl_sarena->initialized = true;
+
+		if ((ctl_darena = arenas_i_impl(tsd, MALLCTL_ARENAS_DESTROYED,
+		    false, true)) == NULL) {
+			ret = true;
+			goto label_return;
+		}
+		ctl_arena_clear(ctl_darena);
+		/*
+		 * Don't toggle ctl_darena to initialized until an arena is
+		 * actually destroyed, so that arena.<i>.initialized can be used
+		 * to query whether the stats are relevant.
+		 */
+
+		ctl_arenas->narenas = narenas_total_get();
+		for (i = 0; i < ctl_arenas->narenas; i++) {
+			if (arenas_i_impl(tsd, i, false, true) == NULL) {
+				ret = true;
+				goto label_return;
+			}
+		}
+
+		ql_new(&ctl_arenas->destroyed);
+		ctl_refresh(tsdn);
+
+		ctl_initialized = true;
+	}
+
+	ret = false;
+label_return:
+	malloc_mutex_unlock(tsdn, &ctl_mtx);
+	return ret;
+}
+
+static int
+ctl_lookup(tsdn_t *tsdn, const ctl_named_node_t *starting_node,
+    const char *name, const ctl_named_node_t **ending_nodep, size_t *mibp,
+    size_t *depthp) {
+	int ret;
+	const char *elm, *tdot, *dot;
+	size_t elen, i, j;
+	const ctl_named_node_t *node;
+
+	elm = name;
+	/* Equivalent to strchrnul(). */
+	dot = ((tdot = strchr(elm, '.')) != NULL) ? tdot : strchr(elm, '\0');
+	elen = (size_t)((uintptr_t)dot - (uintptr_t)elm);
+	if (elen == 0) {
+		ret = ENOENT;
+		goto label_return;
+	}
+	node = starting_node;
+	for (i = 0; i < *depthp; i++) {
+		assert(node);
+		assert(node->nchildren > 0);
+		if (ctl_named_node(node->children) != NULL) {
+			const ctl_named_node_t *pnode = node;
+
+			/* Children are named. */
+			for (j = 0; j < node->nchildren; j++) {
+				const ctl_named_node_t *child =
+				    ctl_named_children(node, j);
+				if (strlen(child->name) == elen &&
+				    strncmp(elm, child->name, elen) == 0) {
+					node = child;
+					mibp[i] = j;
+					break;
+				}
+			}
+			if (node == pnode) {
+				ret = ENOENT;
+				goto label_return;
+			}
+		} else {
+			uintmax_t index;
+			const ctl_indexed_node_t *inode;
+
+			/* Children are indexed. */
+			index = malloc_strtoumax(elm, NULL, 10);
+			if (index == UINTMAX_MAX || index > SIZE_T_MAX) {
+				ret = ENOENT;
+				goto label_return;
+			}
+
+			inode = ctl_indexed_node(node->children);
+			node = inode->index(tsdn, mibp, *depthp, (size_t)index);
+			if (node == NULL) {
+				ret = ENOENT;
+				goto label_return;
+			}
+
+			mibp[i] = (size_t)index;
+		}
+
+		/* Reached the end? */
+		if (node->ctl != NULL || *dot == '\0') {
+			/* Terminal node. */
+			if (*dot != '\0') {
+				/*
+				 * The name contains more elements than are
+				 * in this path through the tree.
+				 */
+				ret = ENOENT;
+				goto label_return;
+			}
+			/* Complete lookup successful. */
+			*depthp = i + 1;
+			break;
+		}
+
+		/* Update elm. */
+		elm = &dot[1];
+		dot = ((tdot = strchr(elm, '.')) != NULL) ? tdot :
+		    strchr(elm, '\0');
+		elen = (size_t)((uintptr_t)dot - (uintptr_t)elm);
+	}
+	if (ending_nodep != NULL) {
+		*ending_nodep = node;
+	}
+
+	ret = 0;
+label_return:
+	return ret;
+}
+
+int
+ctl_byname(tsd_t *tsd, const char *name, void *oldp, size_t *oldlenp,
+    void *newp, size_t newlen) {
+	int ret;
+	size_t depth;
+	size_t mib[CTL_MAX_DEPTH];
+	const ctl_named_node_t *node;
+
+	if (!ctl_initialized && ctl_init(tsd)) {
+		ret = EAGAIN;
+		goto label_return;
+	}
+
+	depth = CTL_MAX_DEPTH;
+	ret = ctl_lookup(tsd_tsdn(tsd), super_root_node, name, &node, mib,
+	    &depth);
+	if (ret != 0) {
+		goto label_return;
+	}
+
+	if (node != NULL && node->ctl) {
+		ret = node->ctl(tsd, mib, depth, oldp, oldlenp, newp, newlen);
+	} else {
+		/* The name refers to a partial path through the ctl tree. */
+		ret = ENOENT;
+	}
+
+label_return:
+	return(ret);
+}
+
+int
+ctl_nametomib(tsd_t *tsd, const char *name, size_t *mibp, size_t *miblenp) {
+	int ret;
+
+	if (!ctl_initialized && ctl_init(tsd)) {
+		ret = EAGAIN;
+		goto label_return;
+	}
+
+	ret = ctl_lookup(tsd_tsdn(tsd), super_root_node, name, NULL, mibp,
+	    miblenp);
+label_return:
+	return(ret);
+}
+
+static int
+ctl_lookupbymib(tsdn_t *tsdn, const ctl_named_node_t **ending_nodep,
+    const size_t *mib, size_t miblen) {
+	int ret;
+
+	const ctl_named_node_t *node = super_root_node;
+	for (size_t i = 0; i < miblen; i++) {
+		assert(node);
+		assert(node->nchildren > 0);
+		if (ctl_named_node(node->children) != NULL) {
+			/* Children are named. */
+			if (node->nchildren <= mib[i]) {
+				ret = ENOENT;
+				goto label_return;
+			}
+			node = ctl_named_children(node, mib[i]);
+		} else {
+			const ctl_indexed_node_t *inode;
+
+			/* Indexed element. */
+			inode = ctl_indexed_node(node->children);
+			node = inode->index(tsdn, mib, miblen, mib[i]);
+			if (node == NULL) {
+				ret = ENOENT;
+				goto label_return;
+			}
+		}
+	}
+	assert(ending_nodep != NULL);
+	*ending_nodep = node;
+	ret = 0;
+
+label_return:
+	return(ret);
+}
+
+int
+ctl_bymib(tsd_t *tsd, const size_t *mib, size_t miblen, void *oldp,
+    size_t *oldlenp, void *newp, size_t newlen) {
+	int ret;
+	const ctl_named_node_t *node;
+
+	if (!ctl_initialized && ctl_init(tsd)) {
+		ret = EAGAIN;
+		goto label_return;
+	}
+
+	ret = ctl_lookupbymib(tsd_tsdn(tsd), &node, mib, miblen);
+	if (ret != 0) {
+		goto label_return;
+	}
+
+	/* Call the ctl function. */
+	if (node && node->ctl) {
+		ret = node->ctl(tsd, mib, miblen, oldp, oldlenp, newp, newlen);
+	} else {
+		/* Partial MIB. */
+		ret = ENOENT;
+	}
+
+label_return:
+	return(ret);
+}
+
+int
+ctl_mibnametomib(tsd_t *tsd, size_t *mib, size_t miblen, const char *name,
+    size_t *miblenp) {
+	int ret;
+	const ctl_named_node_t *node;
+
+	if (!ctl_initialized && ctl_init(tsd)) {
+		ret = EAGAIN;
+		goto label_return;
+	}
+
+	ret = ctl_lookupbymib(tsd_tsdn(tsd), &node, mib, miblen);
+	if (ret != 0) {
+		goto label_return;
+	}
+	if (node == NULL || node->ctl != NULL) {
+		ret = ENOENT;
+		goto label_return;
+	}
+
+	assert(miblenp != NULL);
+	assert(*miblenp >= miblen);
+	*miblenp -= miblen;
+	ret = ctl_lookup(tsd_tsdn(tsd), node, name, NULL, mib + miblen,
+	    miblenp);
+	*miblenp += miblen;
+label_return:
+	return(ret);
+}
+
+int
+ctl_bymibname(tsd_t *tsd, size_t *mib, size_t miblen, const char *name,
+    size_t *miblenp, void *oldp, size_t *oldlenp, void *newp, size_t newlen) {
+	int ret;
+	const ctl_named_node_t *node;
+
+	if (!ctl_initialized && ctl_init(tsd)) {
+		ret = EAGAIN;
+		goto label_return;
+	}
+
+	ret = ctl_lookupbymib(tsd_tsdn(tsd), &node, mib, miblen);
+	if (ret != 0) {
+		goto label_return;
+	}
+	if (node == NULL || node->ctl != NULL) {
+		ret = ENOENT;
+		goto label_return;
+	}
+
+	assert(miblenp != NULL);
+	assert(*miblenp >= miblen);
+	*miblenp -= miblen;
+	/*
+	 * The same node supplies the starting node and stores the ending node.
+	 */
+	ret = ctl_lookup(tsd_tsdn(tsd), node, name, &node, mib + miblen,
+	    miblenp);
+	*miblenp += miblen;
+	if (ret != 0) {
+		goto label_return;
+	}
+
+	if (node != NULL && node->ctl) {
+		ret = node->ctl(tsd, mib, *miblenp, oldp, oldlenp, newp,
+		    newlen);
+	} else {
+		/* The name refers to a partial path through the ctl tree. */
+		ret = ENOENT;
+	}
+
+label_return:
+	return(ret);
+}
+
+bool
+ctl_boot(void) {
+	if (malloc_mutex_init(&ctl_mtx, "ctl", WITNESS_RANK_CTL,
+	    malloc_mutex_rank_exclusive)) {
+		return true;
+	}
+
+	ctl_initialized = false;
+
+	return false;
+}
+
+void
+ctl_prefork(tsdn_t *tsdn) {
+	malloc_mutex_prefork(tsdn, &ctl_mtx);
+}
+
+void
+ctl_postfork_parent(tsdn_t *tsdn) {
+	malloc_mutex_postfork_parent(tsdn, &ctl_mtx);
+}
+
+void
+ctl_postfork_child(tsdn_t *tsdn) {
+	malloc_mutex_postfork_child(tsdn, &ctl_mtx);
+}
+
+void
+ctl_mtx_assert_held(tsdn_t *tsdn) {
+	malloc_mutex_assert_owner(tsdn, &ctl_mtx);
+}
+
+/******************************************************************************/
+/* *_ctl() functions. */
+
+#define READONLY()	do {						\
+	if (newp != NULL || newlen != 0) {				\
+		ret = EPERM;						\
+		goto label_return;					\
+	}								\
+} while (0)
+
+#define WRITEONLY()	do {						\
+	if (oldp != NULL || oldlenp != NULL) {				\
+		ret = EPERM;						\
+		goto label_return;					\
+	}								\
+} while (0)
+
+/* Can read or write, but not both. */
+#define READ_XOR_WRITE()	do {					\
+	if ((oldp != NULL && oldlenp != NULL) && (newp != NULL ||	\
+	    newlen != 0)) {						\
+		ret = EPERM;						\
+		goto label_return;					\
+	}								\
+} while (0)
+
+/* Can neither read nor write. */
+#define NEITHER_READ_NOR_WRITE()	do {				\
+	if (oldp != NULL || oldlenp != NULL || newp != NULL ||		\
+	    newlen != 0) {						\
+		ret = EPERM;						\
+		goto label_return;					\
+	}								\
+} while (0)
+
+/* Verify that the space provided is enough. */
+#define VERIFY_READ(t)	do {						\
+	if (oldp == NULL || oldlenp == NULL || *oldlenp != sizeof(t)) {	\
+		*oldlenp = 0;						\
+		ret = EINVAL;						\
+		goto label_return;					\
+	}								\
+} while (0)
+
+#define READ(v, t)	do {						\
+	if (oldp != NULL && oldlenp != NULL) {				\
+		if (*oldlenp != sizeof(t)) {				\
+			size_t	copylen = (sizeof(t) <= *oldlenp)	\
+			    ? sizeof(t) : *oldlenp;			\
+			memcpy(oldp, (void *)&(v), copylen);		\
+			*oldlenp = copylen;				\
+			ret = EINVAL;					\
+			goto label_return;				\
+		}							\
+		*(t *)oldp = (v);					\
+	}								\
+} while (0)
+
+#define WRITE(v, t)	do {						\
+	if (newp != NULL) {						\
+		if (newlen != sizeof(t)) {				\
+			ret = EINVAL;					\
+			goto label_return;				\
+		}							\
+		(v) = *(t *)newp;					\
+	}								\
+} while (0)
+
+#define ASSURED_WRITE(v, t)	do {					\
+	if (newp == NULL || newlen != sizeof(t)) {			\
+		ret = EINVAL;						\
+		goto label_return;					\
+	}								\
+	(v) = *(t *)newp;						\
+} while (0)
+
+#define MIB_UNSIGNED(v, i) do {						\
+	if (mib[i] > UINT_MAX) {					\
+		ret = EFAULT;						\
+		goto label_return;					\
+	}								\
+	v = (unsigned)mib[i];						\
+} while (0)
+
+/*
+ * There's a lot of code duplication in the following macros due to limitations
+ * in how nested cpp macros are expanded.
+ */
+#define CTL_RO_CLGEN(c, l, n, v, t)					\
+static int								\
+n##_ctl(tsd_t *tsd, const size_t *mib, size_t miblen, void *oldp,	\
+    size_t *oldlenp, void *newp, size_t newlen) {			\
+	int ret;							\
+	t oldval;							\
+									\
+	if (!(c)) {							\
+		return ENOENT;						\
+	}								\
+	if (l) {							\
+		malloc_mutex_lock(tsd_tsdn(tsd), &ctl_mtx);		\
+	}								\
+	READONLY();							\
+	oldval = (v);							\
+	READ(oldval, t);						\
+									\
+	ret = 0;							\
+label_return:								\
+	if (l) {							\
+		malloc_mutex_unlock(tsd_tsdn(tsd), &ctl_mtx);		\
+	}								\
+	return ret;							\
+}
+
+#define CTL_RO_CGEN(c, n, v, t)						\
+static int								\
+n##_ctl(tsd_t *tsd, const size_t *mib, size_t miblen,			\
+    void *oldp, size_t *oldlenp, void *newp, size_t newlen) {		\
+	int ret;							\
+	t oldval;							\
+									\
+	if (!(c)) {							\
+		return ENOENT;						\
+	}								\
+	malloc_mutex_lock(tsd_tsdn(tsd), &ctl_mtx);			\
+	READONLY();							\
+	oldval = (v);							\
+	READ(oldval, t);						\
+									\
+	ret = 0;							\
+label_return:								\
+	malloc_mutex_unlock(tsd_tsdn(tsd), &ctl_mtx);			\
+	return ret;							\
+}
+
+#define CTL_RO_GEN(n, v, t)						\
+static int								\
+n##_ctl(tsd_t *tsd, const size_t *mib, size_t miblen, void *oldp,	\
+    size_t *oldlenp, void *newp, size_t newlen) {			\
+	int ret;							\
+	t oldval;							\
+									\
+	malloc_mutex_lock(tsd_tsdn(tsd), &ctl_mtx);			\
+	READONLY();							\
+	oldval = (v);							\
+	READ(oldval, t);						\
+									\
+	ret = 0;							\
+label_return:								\
+	malloc_mutex_unlock(tsd_tsdn(tsd), &ctl_mtx);			\
+	return ret;							\
+}
+
+/*
+ * ctl_mtx is not acquired, under the assumption that no pertinent data will
+ * mutate during the call.
+ */
+#define CTL_RO_NL_CGEN(c, n, v, t)					\
+static int								\
+n##_ctl(tsd_t *tsd, const size_t *mib, size_t miblen,			\
+    void *oldp, size_t *oldlenp, void *newp, size_t newlen) {		\
+	int ret;							\
+	t oldval;							\
+									\
+	if (!(c)) {							\
+		return ENOENT;						\
+	}								\
+	READONLY();							\
+	oldval = (v);							\
+	READ(oldval, t);						\
+									\
+	ret = 0;							\
+label_return:								\
+	return ret;							\
+}
+
+#define CTL_RO_NL_GEN(n, v, t)						\
+static int								\
+n##_ctl(tsd_t *tsd, const size_t *mib, size_t miblen,			\
+    void *oldp, size_t *oldlenp, void *newp, size_t newlen) {		\
+	int ret;							\
+	t oldval;							\
+									\
+	READONLY();							\
+	oldval = (v);							\
+	READ(oldval, t);						\
+									\
+	ret = 0;							\
+label_return:								\
+	return ret;							\
+}
+
+#define CTL_RO_CONFIG_GEN(n, t)						\
+static int								\
+n##_ctl(tsd_t *tsd, const size_t *mib, size_t miblen,			\
+    void *oldp, size_t *oldlenp, void *newp, size_t newlen) {		\
+	int ret;							\
+	t oldval;							\
+									\
+	READONLY();							\
+	oldval = n;							\
+	READ(oldval, t);						\
+									\
+	ret = 0;							\
+label_return:								\
+	return ret;							\
+}
+
+/******************************************************************************/
+
+CTL_RO_NL_GEN(version, JEMALLOC_VERSION, const char *)
+
+static int
+epoch_ctl(tsd_t *tsd, const size_t *mib, size_t miblen,
+    void *oldp, size_t *oldlenp, void *newp, size_t newlen) {
+	int ret;
+	UNUSED uint64_t newval;
+
+	malloc_mutex_lock(tsd_tsdn(tsd), &ctl_mtx);
+	WRITE(newval, uint64_t);
+	if (newp != NULL) {
+		ctl_refresh(tsd_tsdn(tsd));
+	}
+	READ(ctl_arenas->epoch, uint64_t);
+
+	ret = 0;
+label_return:
+	malloc_mutex_unlock(tsd_tsdn(tsd), &ctl_mtx);
+	return ret;
+}
+
+static int
+background_thread_ctl(tsd_t *tsd, const size_t *mib,
+    size_t miblen, void *oldp, size_t *oldlenp,
+    void *newp, size_t newlen) {
+	int ret;
+	bool oldval;
+
+	if (!have_background_thread) {
+		return ENOENT;
+	}
+	background_thread_ctl_init(tsd_tsdn(tsd));
+
+	malloc_mutex_lock(tsd_tsdn(tsd), &ctl_mtx);
+	malloc_mutex_lock(tsd_tsdn(tsd), &background_thread_lock);
+	if (newp == NULL) {
+		oldval = background_thread_enabled();
+		READ(oldval, bool);
+	} else {
+		if (newlen != sizeof(bool)) {
+			ret = EINVAL;
+			goto label_return;
+		}
+		oldval = background_thread_enabled();
+		READ(oldval, bool);
+
+		bool newval = *(bool *)newp;
+		if (newval == oldval) {
+			ret = 0;
+			goto label_return;
+		}
+
+		background_thread_enabled_set(tsd_tsdn(tsd), newval);
+		if (newval) {
+			if (background_threads_enable(tsd)) {
+				ret = EFAULT;
+				goto label_return;
+			}
+		} else {
+			if (background_threads_disable(tsd)) {
+				ret = EFAULT;
+				goto label_return;
+			}
+		}
+	}
+	ret = 0;
+label_return:
+	malloc_mutex_unlock(tsd_tsdn(tsd), &background_thread_lock);
+	malloc_mutex_unlock(tsd_tsdn(tsd), &ctl_mtx);
+
+	return ret;
+}
+
+static int
+max_background_threads_ctl(tsd_t *tsd, const size_t *mib,
+    size_t miblen, void *oldp, size_t *oldlenp, void *newp,
+    size_t newlen) {
+	int ret;
+	size_t oldval;
+
+	if (!have_background_thread) {
+		return ENOENT;
+	}
+	background_thread_ctl_init(tsd_tsdn(tsd));
+
+	malloc_mutex_lock(tsd_tsdn(tsd), &ctl_mtx);
+	malloc_mutex_lock(tsd_tsdn(tsd), &background_thread_lock);
+	if (newp == NULL) {
+		oldval = max_background_threads;
+		READ(oldval, size_t);
+	} else {
+		if (newlen != sizeof(size_t)) {
+			ret = EINVAL;
+			goto label_return;
+		}
+		oldval = max_background_threads;
+		READ(oldval, size_t);
+
+		size_t newval = *(size_t *)newp;
+		if (newval == oldval) {
+			ret = 0;
+			goto label_return;
+		}
+		if (newval > opt_max_background_threads) {
+			ret = EINVAL;
+			goto label_return;
+		}
+
+		if (background_thread_enabled()) {
+			background_thread_enabled_set(tsd_tsdn(tsd), false);
+			if (background_threads_disable(tsd)) {
+				ret = EFAULT;
+				goto label_return;
+			}
+			max_background_threads = newval;
+			background_thread_enabled_set(tsd_tsdn(tsd), true);
+			if (background_threads_enable(tsd)) {
+				ret = EFAULT;
+				goto label_return;
+			}
+		} else {
+			max_background_threads = newval;
+		}
+	}
+	ret = 0;
+label_return:
+	malloc_mutex_unlock(tsd_tsdn(tsd), &background_thread_lock);
+	malloc_mutex_unlock(tsd_tsdn(tsd), &ctl_mtx);
+
+	return ret;
+}
+
+/******************************************************************************/
+
+CTL_RO_CONFIG_GEN(config_cache_oblivious, bool)
+CTL_RO_CONFIG_GEN(config_debug, bool)
+CTL_RO_CONFIG_GEN(config_fill, bool)
+CTL_RO_CONFIG_GEN(config_lazy_lock, bool)
+CTL_RO_CONFIG_GEN(config_malloc_conf, const char *)
+CTL_RO_CONFIG_GEN(config_opt_safety_checks, bool)
+CTL_RO_CONFIG_GEN(config_prof, bool)
+CTL_RO_CONFIG_GEN(config_prof_libgcc, bool)
+CTL_RO_CONFIG_GEN(config_prof_libunwind, bool)
+CTL_RO_CONFIG_GEN(config_stats, bool)
+CTL_RO_CONFIG_GEN(config_utrace, bool)
+CTL_RO_CONFIG_GEN(config_xmalloc, bool)
+
+/******************************************************************************/
+
+CTL_RO_NL_GEN(opt_abort, opt_abort, bool)
+CTL_RO_NL_GEN(opt_abort_conf, opt_abort_conf, bool)
+CTL_RO_NL_GEN(opt_cache_oblivious, opt_cache_oblivious, bool)
+CTL_RO_NL_GEN(opt_trust_madvise, opt_trust_madvise, bool)
+CTL_RO_NL_GEN(opt_confirm_conf, opt_confirm_conf, bool)
+
+/* HPA options. */
+CTL_RO_NL_GEN(opt_hpa, opt_hpa, bool)
+CTL_RO_NL_GEN(opt_hpa_hugification_threshold,
+    opt_hpa_opts.hugification_threshold, size_t)
+CTL_RO_NL_GEN(opt_hpa_hugify_delay_ms, opt_hpa_opts.hugify_delay_ms, uint64_t)
+CTL_RO_NL_GEN(opt_hpa_min_purge_interval_ms, opt_hpa_opts.min_purge_interval_ms,
+    uint64_t)
+
+/*
+ * This will have to change before we publicly document this option; fxp_t and
+ * its representation are internal implementation details.
+ */
+CTL_RO_NL_GEN(opt_hpa_dirty_mult, opt_hpa_opts.dirty_mult, fxp_t)
+CTL_RO_NL_GEN(opt_hpa_slab_max_alloc, opt_hpa_opts.slab_max_alloc, size_t)
+
+/* HPA SEC options */
+CTL_RO_NL_GEN(opt_hpa_sec_nshards, opt_hpa_sec_opts.nshards, size_t)
+CTL_RO_NL_GEN(opt_hpa_sec_max_alloc, opt_hpa_sec_opts.max_alloc, size_t)
+CTL_RO_NL_GEN(opt_hpa_sec_max_bytes, opt_hpa_sec_opts.max_bytes, size_t)
+CTL_RO_NL_GEN(opt_hpa_sec_bytes_after_flush, opt_hpa_sec_opts.bytes_after_flush,
+    size_t)
+CTL_RO_NL_GEN(opt_hpa_sec_batch_fill_extra, opt_hpa_sec_opts.batch_fill_extra,
+    size_t)
+
+CTL_RO_NL_GEN(opt_metadata_thp, metadata_thp_mode_names[opt_metadata_thp],
+    const char *)
+CTL_RO_NL_GEN(opt_retain, opt_retain, bool)
+CTL_RO_NL_GEN(opt_dss, opt_dss, const char *)
+CTL_RO_NL_GEN(opt_narenas, opt_narenas, unsigned)
+CTL_RO_NL_GEN(opt_percpu_arena, percpu_arena_mode_names[opt_percpu_arena],
+    const char *)
+CTL_RO_NL_GEN(opt_mutex_max_spin, opt_mutex_max_spin, int64_t)
+CTL_RO_NL_GEN(opt_oversize_threshold, opt_oversize_threshold, size_t)
+CTL_RO_NL_GEN(opt_background_thread, opt_background_thread, bool)
+CTL_RO_NL_GEN(opt_max_background_threads, opt_max_background_threads, size_t)
+CTL_RO_NL_GEN(opt_dirty_decay_ms, opt_dirty_decay_ms, ssize_t)
+CTL_RO_NL_GEN(opt_muzzy_decay_ms, opt_muzzy_decay_ms, ssize_t)
+CTL_RO_NL_GEN(opt_stats_print, opt_stats_print, bool)
+CTL_RO_NL_GEN(opt_stats_print_opts, opt_stats_print_opts, const char *)
+CTL_RO_NL_GEN(opt_stats_interval, opt_stats_interval, int64_t)
+CTL_RO_NL_GEN(opt_stats_interval_opts, opt_stats_interval_opts, const char *)
+CTL_RO_NL_CGEN(config_fill, opt_junk, opt_junk, const char *)
+CTL_RO_NL_CGEN(config_fill, opt_zero, opt_zero, bool)
+CTL_RO_NL_CGEN(config_utrace, opt_utrace, opt_utrace, bool)
+CTL_RO_NL_CGEN(config_xmalloc, opt_xmalloc, opt_xmalloc, bool)
+CTL_RO_NL_CGEN(config_enable_cxx, opt_experimental_infallible_new,
+    opt_experimental_infallible_new, bool)
+CTL_RO_NL_GEN(opt_tcache, opt_tcache, bool)
+CTL_RO_NL_GEN(opt_tcache_max, opt_tcache_max, size_t)
+CTL_RO_NL_GEN(opt_tcache_nslots_small_min, opt_tcache_nslots_small_min,
+    unsigned)
+CTL_RO_NL_GEN(opt_tcache_nslots_small_max, opt_tcache_nslots_small_max,
+    unsigned)
+CTL_RO_NL_GEN(opt_tcache_nslots_large, opt_tcache_nslots_large, unsigned)
+CTL_RO_NL_GEN(opt_lg_tcache_nslots_mul, opt_lg_tcache_nslots_mul, ssize_t)
+CTL_RO_NL_GEN(opt_tcache_gc_incr_bytes, opt_tcache_gc_incr_bytes, size_t)
+CTL_RO_NL_GEN(opt_tcache_gc_delay_bytes, opt_tcache_gc_delay_bytes, size_t)
+CTL_RO_NL_GEN(opt_lg_tcache_flush_small_div, opt_lg_tcache_flush_small_div,
+    unsigned)
+CTL_RO_NL_GEN(opt_lg_tcache_flush_large_div, opt_lg_tcache_flush_large_div,
+    unsigned)
+CTL_RO_NL_GEN(opt_thp, thp_mode_names[opt_thp], const char *)
+CTL_RO_NL_GEN(opt_lg_extent_max_active_fit, opt_lg_extent_max_active_fit,
+    size_t)
+CTL_RO_NL_CGEN(config_prof, opt_prof, opt_prof, bool)
+CTL_RO_NL_CGEN(config_prof, opt_prof_prefix, opt_prof_prefix, const char *)
+CTL_RO_NL_CGEN(config_prof, opt_prof_active, opt_prof_active, bool)
+CTL_RO_NL_CGEN(config_prof, opt_prof_thread_active_init,
+    opt_prof_thread_active_init, bool)
+CTL_RO_NL_CGEN(config_prof, opt_lg_prof_sample, opt_lg_prof_sample, size_t)
+CTL_RO_NL_CGEN(config_prof, opt_prof_accum, opt_prof_accum, bool)
+CTL_RO_NL_CGEN(config_prof, opt_lg_prof_interval, opt_lg_prof_interval, ssize_t)
+CTL_RO_NL_CGEN(config_prof, opt_prof_gdump, opt_prof_gdump, bool)
+CTL_RO_NL_CGEN(config_prof, opt_prof_final, opt_prof_final, bool)
+CTL_RO_NL_CGEN(config_prof, opt_prof_leak, opt_prof_leak, bool)
+CTL_RO_NL_CGEN(config_prof, opt_prof_leak_error, opt_prof_leak_error, bool)
+CTL_RO_NL_CGEN(config_prof, opt_prof_recent_alloc_max,
+    opt_prof_recent_alloc_max, ssize_t)
+CTL_RO_NL_CGEN(config_prof, opt_prof_stats, opt_prof_stats, bool)
+CTL_RO_NL_CGEN(config_prof, opt_prof_sys_thread_name, opt_prof_sys_thread_name,
+    bool)
+CTL_RO_NL_CGEN(config_prof, opt_prof_time_res,
+    prof_time_res_mode_names[opt_prof_time_res], const char *)
+CTL_RO_NL_CGEN(config_uaf_detection, opt_lg_san_uaf_align,
+    opt_lg_san_uaf_align, ssize_t)
+CTL_RO_NL_GEN(opt_zero_realloc,
+    zero_realloc_mode_names[opt_zero_realloc_action], const char *)
+
+/******************************************************************************/
+
+static int
+thread_arena_ctl(tsd_t *tsd, const size_t *mib, size_t miblen,
+    void *oldp, size_t *oldlenp, void *newp, size_t newlen) {
+	int ret;
+	arena_t *oldarena;
+	unsigned newind, oldind;
+
+	oldarena = arena_choose(tsd, NULL);
+	if (oldarena == NULL) {
+		return EAGAIN;
+	}
+	newind = oldind = arena_ind_get(oldarena);
+	WRITE(newind, unsigned);
+	READ(oldind, unsigned);
+
+	if (newind != oldind) {
+		arena_t *newarena;
+
+		if (newind >= narenas_total_get()) {
+			/* New arena index is out of range. */
+			ret = EFAULT;
+			goto label_return;
+		}
+
+		if (have_percpu_arena &&
+		    PERCPU_ARENA_ENABLED(opt_percpu_arena)) {
+			if (newind < percpu_arena_ind_limit(opt_percpu_arena)) {
+				/*
+				 * If perCPU arena is enabled, thread_arena
+				 * control is not allowed for the auto arena
+				 * range.
+				 */
+				ret = EPERM;
+				goto label_return;
+			}
+		}
+
+		/* Initialize arena if necessary. */
+		newarena = arena_get(tsd_tsdn(tsd), newind, true);
+		if (newarena == NULL) {
+			ret = EAGAIN;
+			goto label_return;
+		}
+		/* Set new arena/tcache associations. */
+		arena_migrate(tsd, oldarena, newarena);
+		if (tcache_available(tsd)) {
+			tcache_arena_reassociate(tsd_tsdn(tsd),
+			    tsd_tcache_slowp_get(tsd), tsd_tcachep_get(tsd),
+			    newarena);
+		}
+	}
+
+	ret = 0;
+label_return:
+	return ret;
+}
+
+CTL_RO_NL_GEN(thread_allocated, tsd_thread_allocated_get(tsd), uint64_t)
+CTL_RO_NL_GEN(thread_allocatedp, tsd_thread_allocatedp_get(tsd), uint64_t *)
+CTL_RO_NL_GEN(thread_deallocated, tsd_thread_deallocated_get(tsd), uint64_t)
+CTL_RO_NL_GEN(thread_deallocatedp, tsd_thread_deallocatedp_get(tsd), uint64_t *)
+
+static int
+thread_tcache_enabled_ctl(tsd_t *tsd, const size_t *mib,
+    size_t miblen, void *oldp, size_t *oldlenp, void *newp,
+    size_t newlen) {
+	int ret;
+	bool oldval;
+
+	oldval = tcache_enabled_get(tsd);
+	if (newp != NULL) {
+		if (newlen != sizeof(bool)) {
+			ret = EINVAL;
+			goto label_return;
+		}
+		tcache_enabled_set(tsd, *(bool *)newp);
+	}
+	READ(oldval, bool);
+
+	ret = 0;
+label_return:
+	return ret;
+}
+
+static int
+thread_tcache_flush_ctl(tsd_t *tsd, const size_t *mib,
+    size_t miblen, void *oldp, size_t *oldlenp, void *newp,
+    size_t newlen) {
+	int ret;
+
+	if (!tcache_available(tsd)) {
+		ret = EFAULT;
+		goto label_return;
+	}
+
+	NEITHER_READ_NOR_WRITE();
+
+	tcache_flush(tsd);
+
+	ret = 0;
+label_return:
+	return ret;
+}
+
+static int
+thread_peak_read_ctl(tsd_t *tsd, const size_t *mib,
+    size_t miblen, void *oldp, size_t *oldlenp, void *newp,
+    size_t newlen) {
+	int ret;
+	if (!config_stats) {
+		return ENOENT;
+	}
+	READONLY();
+	peak_event_update(tsd);
+	uint64_t result = peak_event_max(tsd);
+	READ(result, uint64_t);
+	ret = 0;
+label_return:
+	return ret;
+}
+
+static int
+thread_peak_reset_ctl(tsd_t *tsd, const size_t *mib,
+    size_t miblen, void *oldp, size_t *oldlenp, void *newp,
+    size_t newlen) {
+	int ret;
+	if (!config_stats) {
+		return ENOENT;
+	}
+	NEITHER_READ_NOR_WRITE();
+	peak_event_zero(tsd);
+	ret = 0;
+label_return:
+	return ret;
+}
+
+static int
+thread_prof_name_ctl(tsd_t *tsd, const size_t *mib,
+    size_t miblen, void *oldp, size_t *oldlenp, void *newp,
+    size_t newlen) {
+	int ret;
+
+	if (!config_prof || !opt_prof) {
+		return ENOENT;
+	}
+
+	READ_XOR_WRITE();
+
+	if (newp != NULL) {
+		if (newlen != sizeof(const char *)) {
+			ret = EINVAL;
+			goto label_return;
+		}
+
+		if ((ret = prof_thread_name_set(tsd, *(const char **)newp)) !=
+		    0) {
+			goto label_return;
+		}
+	} else {
+		const char *oldname = prof_thread_name_get(tsd);
+		READ(oldname, const char *);
+	}
+
+	ret = 0;
+label_return:
+	return ret;
+}
+
+static int
+thread_prof_active_ctl(tsd_t *tsd, const size_t *mib,
+    size_t miblen, void *oldp, size_t *oldlenp, void *newp,
+    size_t newlen) {
+	int ret;
+	bool oldval;
+
+	if (!config_prof) {
+		return ENOENT;
+	}
+
+	oldval = opt_prof ? prof_thread_active_get(tsd) : false;
+	if (newp != NULL) {
+		if (!opt_prof) {
+			ret = ENOENT;
+			goto label_return;
+		}
+		if (newlen != sizeof(bool)) {
+			ret = EINVAL;
+			goto label_return;
+		}
+		if (prof_thread_active_set(tsd, *(bool *)newp)) {
+			ret = EAGAIN;
+			goto label_return;
+		}
+	}
+	READ(oldval, bool);
+
+	ret = 0;
+label_return:
+	return ret;
+}
+
+static int
+thread_idle_ctl(tsd_t *tsd, const size_t *mib,
+    size_t miblen, void *oldp, size_t *oldlenp, void *newp,
+    size_t newlen) {
+	int ret;
+
+	NEITHER_READ_NOR_WRITE();
+
+	if (tcache_available(tsd)) {
+		tcache_flush(tsd);
+	}
+	/*
+	 * This heuristic is perhaps not the most well-considered.  But it
+	 * matches the only idling policy we have experience with in the status
+	 * quo.  Over time we should investigate more principled approaches.
+	 */
+	if (opt_narenas > ncpus * 2) {
+		arena_t *arena = arena_choose(tsd, NULL);
+		if (arena != NULL) {
+			arena_decay(tsd_tsdn(tsd), arena, false, true);
+		}
+		/*
+		 * The missing arena case is not actually an error; a thread
+		 * might be idle before it associates itself to one.  This is
+		 * unusual, but not wrong.
+		 */
+	}
+
+	ret = 0;
+label_return:
+	return ret;
+}
+
+/******************************************************************************/
+
+static int
+tcache_create_ctl(tsd_t *tsd, const size_t *mib, size_t miblen,
+    void *oldp, size_t *oldlenp, void *newp, size_t newlen) {
+	int ret;
+	unsigned tcache_ind;
+
+	READONLY();
+	VERIFY_READ(unsigned);
+	if (tcaches_create(tsd, b0get(), &tcache_ind)) {
+		ret = EFAULT;
+		goto label_return;
+	}
+	READ(tcache_ind, unsigned);
+
+	ret = 0;
+label_return:
+	return ret;
+}
+
+static int
+tcache_flush_ctl(tsd_t *tsd, const size_t *mib, size_t miblen,
+    void *oldp, size_t *oldlenp, void *newp, size_t newlen) {
+	int ret;
+	unsigned tcache_ind;
+
+	WRITEONLY();
+	ASSURED_WRITE(tcache_ind, unsigned);
+	tcaches_flush(tsd, tcache_ind);
+
+	ret = 0;
+label_return:
+	return ret;
+}
+
+static int
+tcache_destroy_ctl(tsd_t *tsd, const size_t *mib, size_t miblen,
+    void *oldp, size_t *oldlenp, void *newp, size_t newlen) {
+	int ret;
+	unsigned tcache_ind;
+
+	WRITEONLY();
+	ASSURED_WRITE(tcache_ind, unsigned);
+	tcaches_destroy(tsd, tcache_ind);
+
+	ret = 0;
+label_return:
+	return ret;
+}
+
+/******************************************************************************/
+
+static int
+arena_i_initialized_ctl(tsd_t *tsd, const size_t *mib, size_t miblen,
+    void *oldp, size_t *oldlenp, void *newp, size_t newlen) {
+	int ret;
+	tsdn_t *tsdn = tsd_tsdn(tsd);
+	unsigned arena_ind;
+	bool initialized;
+
+	READONLY();
+	MIB_UNSIGNED(arena_ind, 1);
+
+	malloc_mutex_lock(tsdn, &ctl_mtx);
+	initialized = arenas_i(arena_ind)->initialized;
+	malloc_mutex_unlock(tsdn, &ctl_mtx);
+
+	READ(initialized, bool);
+
+	ret = 0;
+label_return:
+	return ret;
+}
+
+static void
+arena_i_decay(tsdn_t *tsdn, unsigned arena_ind, bool all) {
+	malloc_mutex_lock(tsdn, &ctl_mtx);
+	{
+		unsigned narenas = ctl_arenas->narenas;
+
+		/*
+		 * Access via index narenas is deprecated, and scheduled for
+		 * removal in 6.0.0.
+		 */
+		if (arena_ind == MALLCTL_ARENAS_ALL || arena_ind == narenas) {
+			unsigned i;
+			VARIABLE_ARRAY(arena_t *, tarenas, narenas);
+
+			for (i = 0; i < narenas; i++) {
+				tarenas[i] = arena_get(tsdn, i, false);
+			}
+
+			/*
+			 * No further need to hold ctl_mtx, since narenas and
+			 * tarenas contain everything needed below.
+			 */
+			malloc_mutex_unlock(tsdn, &ctl_mtx);
+
+			for (i = 0; i < narenas; i++) {
+				if (tarenas[i] != NULL) {
+					arena_decay(tsdn, tarenas[i], false,
+					    all);
+				}
+			}
+		} else {
+			arena_t *tarena;
+
+			assert(arena_ind < narenas);
+
+			tarena = arena_get(tsdn, arena_ind, false);
+
+			/* No further need to hold ctl_mtx. */
+			malloc_mutex_unlock(tsdn, &ctl_mtx);
+
+			if (tarena != NULL) {
+				arena_decay(tsdn, tarena, false, all);
+			}
+		}
+	}
+}
+
+static int
+arena_i_decay_ctl(tsd_t *tsd, const size_t *mib, size_t miblen, void *oldp,
+    size_t *oldlenp, void *newp, size_t newlen) {
+	int ret;
+	unsigned arena_ind;
+
+	NEITHER_READ_NOR_WRITE();
+	MIB_UNSIGNED(arena_ind, 1);
+	arena_i_decay(tsd_tsdn(tsd), arena_ind, false);
+
+	ret = 0;
+label_return:
+	return ret;
+}
+
+static int
+arena_i_purge_ctl(tsd_t *tsd, const size_t *mib, size_t miblen, void *oldp,
+    size_t *oldlenp, void *newp, size_t newlen) {
+	int ret;
+	unsigned arena_ind;
+
+	NEITHER_READ_NOR_WRITE();
+	MIB_UNSIGNED(arena_ind, 1);
+	arena_i_decay(tsd_tsdn(tsd), arena_ind, true);
+
+	ret = 0;
+label_return:
+	return ret;
+}
+
+static int
+arena_i_reset_destroy_helper(tsd_t *tsd, const size_t *mib, size_t miblen,
+    void *oldp, size_t *oldlenp, void *newp, size_t newlen, unsigned *arena_ind,
+    arena_t **arena) {
+	int ret;
+
+	NEITHER_READ_NOR_WRITE();
+	MIB_UNSIGNED(*arena_ind, 1);
+
+	*arena = arena_get(tsd_tsdn(tsd), *arena_ind, false);
+	if (*arena == NULL || arena_is_auto(*arena)) {
+		ret = EFAULT;
+		goto label_return;
+	}
+
+	ret = 0;
+label_return:
+	return ret;
+}
+
+static void
+arena_reset_prepare_background_thread(tsd_t *tsd, unsigned arena_ind) {
+	/* Temporarily disable the background thread during arena reset. */
+	if (have_background_thread) {
+		malloc_mutex_lock(tsd_tsdn(tsd), &background_thread_lock);
+		if (background_thread_enabled()) {
+			background_thread_info_t *info =
+			    background_thread_info_get(arena_ind);
+			assert(info->state == background_thread_started);
+			malloc_mutex_lock(tsd_tsdn(tsd), &info->mtx);
+			info->state = background_thread_paused;
+			malloc_mutex_unlock(tsd_tsdn(tsd), &info->mtx);
+		}
+	}
+}
+
+static void
+arena_reset_finish_background_thread(tsd_t *tsd, unsigned arena_ind) {
+	if (have_background_thread) {
+		if (background_thread_enabled()) {
+			background_thread_info_t *info =
+			    background_thread_info_get(arena_ind);
+			assert(info->state == background_thread_paused);
+			malloc_mutex_lock(tsd_tsdn(tsd), &info->mtx);
+			info->state = background_thread_started;
+			malloc_mutex_unlock(tsd_tsdn(tsd), &info->mtx);
+		}
+		malloc_mutex_unlock(tsd_tsdn(tsd), &background_thread_lock);
+	}
+}
+
+static int
+arena_i_reset_ctl(tsd_t *tsd, const size_t *mib, size_t miblen, void *oldp,
+    size_t *oldlenp, void *newp, size_t newlen) {
+	int ret;
+	unsigned arena_ind;
+	arena_t *arena;
+
+	ret = arena_i_reset_destroy_helper(tsd, mib, miblen, oldp, oldlenp,
+	    newp, newlen, &arena_ind, &arena);
+	if (ret != 0) {
+		return ret;
+	}
+
+	arena_reset_prepare_background_thread(tsd, arena_ind);
+	arena_reset(tsd, arena);
+	arena_reset_finish_background_thread(tsd, arena_ind);
+
+	return ret;
+}
+
+static int
+arena_i_destroy_ctl(tsd_t *tsd, const size_t *mib, size_t miblen, void *oldp,
+    size_t *oldlenp, void *newp, size_t newlen) {
+	int ret;
+	unsigned arena_ind;
+	arena_t *arena;
+	ctl_arena_t *ctl_darena, *ctl_arena;
+
+	malloc_mutex_lock(tsd_tsdn(tsd), &ctl_mtx);
+
+	ret = arena_i_reset_destroy_helper(tsd, mib, miblen, oldp, oldlenp,
+	    newp, newlen, &arena_ind, &arena);
+	if (ret != 0) {
+		goto label_return;
+	}
+
+	if (arena_nthreads_get(arena, false) != 0 || arena_nthreads_get(arena,
+	    true) != 0) {
+		ret = EFAULT;
+		goto label_return;
+	}
+
+	arena_reset_prepare_background_thread(tsd, arena_ind);
+	/* Merge stats after resetting and purging arena. */
+	arena_reset(tsd, arena);
+	arena_decay(tsd_tsdn(tsd), arena, false, true);
+	ctl_darena = arenas_i(MALLCTL_ARENAS_DESTROYED);
+	ctl_darena->initialized = true;
+	ctl_arena_refresh(tsd_tsdn(tsd), arena, ctl_darena, arena_ind, true);
+	/* Destroy arena. */
+	arena_destroy(tsd, arena);
+	ctl_arena = arenas_i(arena_ind);
+	ctl_arena->initialized = false;
+	/* Record arena index for later recycling via arenas.create. */
+	ql_elm_new(ctl_arena, destroyed_link);
+	ql_tail_insert(&ctl_arenas->destroyed, ctl_arena, destroyed_link);
+	arena_reset_finish_background_thread(tsd, arena_ind);
+
+	assert(ret == 0);
+label_return:
+	malloc_mutex_unlock(tsd_tsdn(tsd), &ctl_mtx);
+
+	return ret;
+}
+
+static int
+arena_i_dss_ctl(tsd_t *tsd, const size_t *mib, size_t miblen, void *oldp,
+    size_t *oldlenp, void *newp, size_t newlen) {
+	int ret;
+	const char *dss = NULL;
+	unsigned arena_ind;
+	dss_prec_t dss_prec_old = dss_prec_limit;
+	dss_prec_t dss_prec = dss_prec_limit;
+
+	malloc_mutex_lock(tsd_tsdn(tsd), &ctl_mtx);
+	WRITE(dss, const char *);
+	MIB_UNSIGNED(arena_ind, 1);
+	if (dss != NULL) {
+		int i;
+		bool match = false;
+
+		for (i = 0; i < dss_prec_limit; i++) {
+			if (strcmp(dss_prec_names[i], dss) == 0) {
+				dss_prec = i;
+				match = true;
+				break;
+			}
+		}
+
+		if (!match) {
+			ret = EINVAL;
+			goto label_return;
+		}
+	}
+
+	/*
+	 * Access via index narenas is deprecated, and scheduled for removal in
+	 * 6.0.0.
+	 */
+	if (arena_ind == MALLCTL_ARENAS_ALL || arena_ind ==
+	    ctl_arenas->narenas) {
+		if (dss_prec != dss_prec_limit &&
+		    extent_dss_prec_set(dss_prec)) {
+			ret = EFAULT;
+			goto label_return;
+		}
+		dss_prec_old = extent_dss_prec_get();
+	} else {
+		arena_t *arena = arena_get(tsd_tsdn(tsd), arena_ind, false);
+		if (arena == NULL || (dss_prec != dss_prec_limit &&
+		    arena_dss_prec_set(arena, dss_prec))) {
+			ret = EFAULT;
+			goto label_return;
+		}
+		dss_prec_old = arena_dss_prec_get(arena);
+	}
+
+	dss = dss_prec_names[dss_prec_old];
+	READ(dss, const char *);
+
+	ret = 0;
+label_return:
+	malloc_mutex_unlock(tsd_tsdn(tsd), &ctl_mtx);
+	return ret;
+}
+
+static int
+arena_i_oversize_threshold_ctl(tsd_t *tsd, const size_t *mib, size_t miblen,
+    void *oldp, size_t *oldlenp, void *newp, size_t newlen) {
+	int ret;
+
+	unsigned arena_ind;
+	MIB_UNSIGNED(arena_ind, 1);
+
+	arena_t *arena = arena_get(tsd_tsdn(tsd), arena_ind, false);
+	if (arena == NULL) {
+		ret = EFAULT;
+		goto label_return;
+	}
+
+	if (oldp != NULL && oldlenp != NULL) {
+		size_t oldval = atomic_load_zu(
+		    &arena->pa_shard.pac.oversize_threshold, ATOMIC_RELAXED);
+		READ(oldval, size_t);
+	}
+	if (newp != NULL) {
+		if (newlen != sizeof(size_t)) {
+			ret = EINVAL;
+			goto label_return;
+		}
+		atomic_store_zu(&arena->pa_shard.pac.oversize_threshold,
+		    *(size_t *)newp, ATOMIC_RELAXED);
+	}
+	ret = 0;
+label_return:
+	return ret;
+}
+
+static int
+arena_i_decay_ms_ctl_impl(tsd_t *tsd, const size_t *mib, size_t miblen,
+    void *oldp, size_t *oldlenp, void *newp, size_t newlen, bool dirty) {
+	int ret;
+	unsigned arena_ind;
+	arena_t *arena;
+
+	MIB_UNSIGNED(arena_ind, 1);
+	arena = arena_get(tsd_tsdn(tsd), arena_ind, false);
+	if (arena == NULL) {
+		ret = EFAULT;
+		goto label_return;
+	}
+	extent_state_t state = dirty ? extent_state_dirty : extent_state_muzzy;
+
+	if (oldp != NULL && oldlenp != NULL) {
+		size_t oldval = arena_decay_ms_get(arena, state);
+		READ(oldval, ssize_t);
+	}
+	if (newp != NULL) {
+		if (newlen != sizeof(ssize_t)) {
+			ret = EINVAL;
+			goto label_return;
+		}
+		if (arena_is_huge(arena_ind) && *(ssize_t *)newp > 0) {
+			/*
+			 * By default the huge arena purges eagerly.  If it is
+			 * set to non-zero decay time afterwards, background
+			 * thread might be needed.
+			 */
+			if (background_thread_create(tsd, arena_ind)) {
+				ret = EFAULT;
+				goto label_return;
+			}
+		}
+
+		if (arena_decay_ms_set(tsd_tsdn(tsd), arena, state,
+		    *(ssize_t *)newp)) {
+			ret = EFAULT;
+			goto label_return;
+		}
+	}
+
+	ret = 0;
+label_return:
+	return ret;
+}
+
+static int
+arena_i_dirty_decay_ms_ctl(tsd_t *tsd, const size_t *mib, size_t miblen,
+    void *oldp, size_t *oldlenp, void *newp, size_t newlen) {
+	return arena_i_decay_ms_ctl_impl(tsd, mib, miblen, oldp, oldlenp, newp,
+	    newlen, true);
+}
+
+static int
+arena_i_muzzy_decay_ms_ctl(tsd_t *tsd, const size_t *mib, size_t miblen,
+    void *oldp, size_t *oldlenp, void *newp, size_t newlen) {
+	return arena_i_decay_ms_ctl_impl(tsd, mib, miblen, oldp, oldlenp, newp,
+	    newlen, false);
+}
+
+static int
+arena_i_extent_hooks_ctl(tsd_t *tsd, const size_t *mib, size_t miblen,
+    void *oldp, size_t *oldlenp, void *newp, size_t newlen) {
+	int ret;
+	unsigned arena_ind;
+	arena_t *arena;
+
+	malloc_mutex_lock(tsd_tsdn(tsd), &ctl_mtx);
+	MIB_UNSIGNED(arena_ind, 1);
+	if (arena_ind < narenas_total_get()) {
+		extent_hooks_t *old_extent_hooks;
+		arena = arena_get(tsd_tsdn(tsd), arena_ind, false);
+		if (arena == NULL) {
+			if (arena_ind >= narenas_auto) {
+				ret = EFAULT;
+				goto label_return;
+			}
+			old_extent_hooks =
+			    (extent_hooks_t *)&ehooks_default_extent_hooks;
+			READ(old_extent_hooks, extent_hooks_t *);
+			if (newp != NULL) {
+				/* Initialize a new arena as a side effect. */
+				extent_hooks_t *new_extent_hooks
+				    JEMALLOC_CC_SILENCE_INIT(NULL);
+				WRITE(new_extent_hooks, extent_hooks_t *);
+				arena_config_t config = arena_config_default;
+				config.extent_hooks = new_extent_hooks;
+
+				arena = arena_init(tsd_tsdn(tsd), arena_ind,
+				    &config);
+				if (arena == NULL) {
+					ret = EFAULT;
+					goto label_return;
+				}
+			}
+		} else {
+			if (newp != NULL) {
+				extent_hooks_t *new_extent_hooks
+				    JEMALLOC_CC_SILENCE_INIT(NULL);
+				WRITE(new_extent_hooks, extent_hooks_t *);
+				old_extent_hooks = arena_set_extent_hooks(tsd,
+				    arena, new_extent_hooks);
+				READ(old_extent_hooks, extent_hooks_t *);
+			} else {
+				old_extent_hooks =
+				    ehooks_get_extent_hooks_ptr(
+					arena_get_ehooks(arena));
+				READ(old_extent_hooks, extent_hooks_t *);
+			}
+		}
+	} else {
+		ret = EFAULT;
+		goto label_return;
+	}
+	ret = 0;
+label_return:
+	malloc_mutex_unlock(tsd_tsdn(tsd), &ctl_mtx);
+	return ret;
+}
+
+static int
+arena_i_retain_grow_limit_ctl(tsd_t *tsd, const size_t *mib,
+    size_t miblen, void *oldp, size_t *oldlenp, void *newp,
+    size_t newlen) {
+	int ret;
+	unsigned arena_ind;
+	arena_t *arena;
+
+	if (!opt_retain) {
+		/* Only relevant when retain is enabled. */
+		return ENOENT;
+	}
+
+	malloc_mutex_lock(tsd_tsdn(tsd), &ctl_mtx);
+	MIB_UNSIGNED(arena_ind, 1);
+	if (arena_ind < narenas_total_get() && (arena =
+	    arena_get(tsd_tsdn(tsd), arena_ind, false)) != NULL) {
+		size_t old_limit, new_limit;
+		if (newp != NULL) {
+			WRITE(new_limit, size_t);
+		}
+		bool err = arena_retain_grow_limit_get_set(tsd, arena,
+		    &old_limit, newp != NULL ? &new_limit : NULL);
+		if (!err) {
+			READ(old_limit, size_t);
+			ret = 0;
+		} else {
+			ret = EFAULT;
+		}
+	} else {
+		ret = EFAULT;
+	}
+label_return:
+	malloc_mutex_unlock(tsd_tsdn(tsd), &ctl_mtx);
+	return ret;
+}
+
+static const ctl_named_node_t *
+arena_i_index(tsdn_t *tsdn, const size_t *mib, size_t miblen,
+    size_t i) {
+	const ctl_named_node_t *ret;
+
+	malloc_mutex_lock(tsdn, &ctl_mtx);
+	switch (i) {
+	case MALLCTL_ARENAS_ALL:
+	case MALLCTL_ARENAS_DESTROYED:
+		break;
+	default:
+		if (i > ctl_arenas->narenas) {
+			ret = NULL;
+			goto label_return;
+		}
+		break;
+	}
+
+	ret = super_arena_i_node;
+label_return:
+	malloc_mutex_unlock(tsdn, &ctl_mtx);
+	return ret;
+}
+
+/******************************************************************************/
+
+static int
+arenas_narenas_ctl(tsd_t *tsd, const size_t *mib, size_t miblen,
+    void *oldp, size_t *oldlenp, void *newp, size_t newlen) {
+	int ret;
+	unsigned narenas;
+
+	malloc_mutex_lock(tsd_tsdn(tsd), &ctl_mtx);
+	READONLY();
+	narenas = ctl_arenas->narenas;
+	READ(narenas, unsigned);
+
+	ret = 0;
+label_return:
+	malloc_mutex_unlock(tsd_tsdn(tsd), &ctl_mtx);
+	return ret;
+}
+
+static int
+arenas_decay_ms_ctl_impl(tsd_t *tsd, const size_t *mib,
+    size_t miblen, void *oldp, size_t *oldlenp, void *newp,
+    size_t newlen, bool dirty) {
+	int ret;
+
+	if (oldp != NULL && oldlenp != NULL) {
+		size_t oldval = (dirty ? arena_dirty_decay_ms_default_get() :
+		    arena_muzzy_decay_ms_default_get());
+		READ(oldval, ssize_t);
+	}
+	if (newp != NULL) {
+		if (newlen != sizeof(ssize_t)) {
+			ret = EINVAL;
+			goto label_return;
+		}
+		if (dirty ? arena_dirty_decay_ms_default_set(*(ssize_t *)newp)
+		    : arena_muzzy_decay_ms_default_set(*(ssize_t *)newp)) {
+			ret = EFAULT;
+			goto label_return;
+		}
+	}
+
+	ret = 0;
+label_return:
+	return ret;
+}
+
+static int
+arenas_dirty_decay_ms_ctl(tsd_t *tsd, const size_t *mib, size_t miblen,
+    void *oldp, size_t *oldlenp, void *newp, size_t newlen) {
+	return arenas_decay_ms_ctl_impl(tsd, mib, miblen, oldp, oldlenp, newp,
+	    newlen, true);
+}
+
+static int
+arenas_muzzy_decay_ms_ctl(tsd_t *tsd, const size_t *mib, size_t miblen,
+    void *oldp, size_t *oldlenp, void *newp, size_t newlen) {
+	return arenas_decay_ms_ctl_impl(tsd, mib, miblen, oldp, oldlenp, newp,
+	    newlen, false);
+}
+
+CTL_RO_NL_GEN(arenas_quantum, QUANTUM, size_t)
+CTL_RO_NL_GEN(arenas_page, PAGE, size_t)
+CTL_RO_NL_GEN(arenas_tcache_max, tcache_maxclass, size_t)
+CTL_RO_NL_GEN(arenas_nbins, SC_NBINS, unsigned)
+CTL_RO_NL_GEN(arenas_nhbins, nhbins, unsigned)
+CTL_RO_NL_GEN(arenas_bin_i_size, bin_infos[mib[2]].reg_size, size_t)
+CTL_RO_NL_GEN(arenas_bin_i_nregs, bin_infos[mib[2]].nregs, uint32_t)
+CTL_RO_NL_GEN(arenas_bin_i_slab_size, bin_infos[mib[2]].slab_size, size_t)
+CTL_RO_NL_GEN(arenas_bin_i_nshards, bin_infos[mib[2]].n_shards, uint32_t)
+static const ctl_named_node_t *
+arenas_bin_i_index(tsdn_t *tsdn, const size_t *mib,
+    size_t miblen, size_t i) {
+	if (i > SC_NBINS) {
+		return NULL;
+	}
+	return super_arenas_bin_i_node;
+}
+
+CTL_RO_NL_GEN(arenas_nlextents, SC_NSIZES - SC_NBINS, unsigned)
+CTL_RO_NL_GEN(arenas_lextent_i_size, sz_index2size(SC_NBINS+(szind_t)mib[2]),
+    size_t)
+static const ctl_named_node_t *
+arenas_lextent_i_index(tsdn_t *tsdn, const size_t *mib,
+    size_t miblen, size_t i) {
+	if (i > SC_NSIZES - SC_NBINS) {
+		return NULL;
+	}
+	return super_arenas_lextent_i_node;
+}
+
+static int
+arenas_create_ctl(tsd_t *tsd, const size_t *mib, size_t miblen,
+    void *oldp, size_t *oldlenp, void *newp, size_t newlen) {
+	int ret;
+	unsigned arena_ind;
+
+	malloc_mutex_lock(tsd_tsdn(tsd), &ctl_mtx);
+
+	VERIFY_READ(unsigned);
+	arena_config_t config = arena_config_default;
+	WRITE(config.extent_hooks, extent_hooks_t *);
+	if ((arena_ind = ctl_arena_init(tsd, &config)) == UINT_MAX) {
+		ret = EAGAIN;
+		goto label_return;
+	}
+	READ(arena_ind, unsigned);
+
+	ret = 0;
+label_return:
+	malloc_mutex_unlock(tsd_tsdn(tsd), &ctl_mtx);
+	return ret;
+}
+
+static int
+experimental_arenas_create_ext_ctl(tsd_t *tsd,
+    const size_t *mib, size_t miblen,
+    void *oldp, size_t *oldlenp, void *newp, size_t newlen) {
+	int ret;
+	unsigned arena_ind;
+
+	malloc_mutex_lock(tsd_tsdn(tsd), &ctl_mtx);
+
+	arena_config_t config = arena_config_default;
+	VERIFY_READ(unsigned);
+	WRITE(config, arena_config_t);
+
+	if ((arena_ind = ctl_arena_init(tsd, &config)) == UINT_MAX) {
+		ret = EAGAIN;
+		goto label_return;
+	}
+	READ(arena_ind, unsigned);
+	ret = 0;
+label_return:
+	malloc_mutex_unlock(tsd_tsdn(tsd), &ctl_mtx);
+	return ret;
+}
+
+static int
+arenas_lookup_ctl(tsd_t *tsd, const size_t *mib,
+    size_t miblen, void *oldp, size_t *oldlenp, void *newp,
+    size_t newlen) {
+	int ret;
+	unsigned arena_ind;
+	void *ptr;
+	edata_t *edata;
+	arena_t *arena;
+
+	ptr = NULL;
+	ret = EINVAL;
+	malloc_mutex_lock(tsd_tsdn(tsd), &ctl_mtx);
+	WRITE(ptr, void *);
+	edata = emap_edata_lookup(tsd_tsdn(tsd), &arena_emap_global, ptr);
+	if (edata == NULL) {
+		goto label_return;
+	}
+
+	arena = arena_get_from_edata(edata);
+	if (arena == NULL) {
+		goto label_return;
+	}
+
+	arena_ind = arena_ind_get(arena);
+	READ(arena_ind, unsigned);
+
+	ret = 0;
+label_return:
+	malloc_mutex_unlock(tsd_tsdn(tsd), &ctl_mtx);
+	return ret;
+}
+
+/******************************************************************************/
+
+static int
+prof_thread_active_init_ctl(tsd_t *tsd, const size_t *mib,
+    size_t miblen, void *oldp, size_t *oldlenp, void *newp,
+    size_t newlen) {
+	int ret;
+	bool oldval;
+
+	if (!config_prof) {
+		return ENOENT;
+	}
+
+	if (newp != NULL) {
+		if (!opt_prof) {
+			ret = ENOENT;
+			goto label_return;
+		}
+		if (newlen != sizeof(bool)) {
+			ret = EINVAL;
+			goto label_return;
+		}
+		oldval = prof_thread_active_init_set(tsd_tsdn(tsd),
+		    *(bool *)newp);
+	} else {
+		oldval = opt_prof ? prof_thread_active_init_get(tsd_tsdn(tsd)) :
+		    false;
+	}
+	READ(oldval, bool);
+
+	ret = 0;
+label_return:
+	return ret;
+}
+
+static int
+prof_active_ctl(tsd_t *tsd, const size_t *mib, size_t miblen,
+    void *oldp, size_t *oldlenp, void *newp, size_t newlen) {
+	int ret;
+	bool oldval;
+
+	if (!config_prof) {
+		ret = ENOENT;
+		goto label_return;
+	}
+
+	if (newp != NULL) {
+		if (newlen != sizeof(bool)) {
+			ret = EINVAL;
+			goto label_return;
+		}
+		bool val = *(bool *)newp;
+		if (!opt_prof) {
+			if (val) {
+				ret = ENOENT;
+				goto label_return;
+			} else {
+				/* No change needed (already off). */
+				oldval = false;
+			}
+		} else {
+			oldval = prof_active_set(tsd_tsdn(tsd), val);
+		}
+	} else {
+		oldval = opt_prof ? prof_active_get(tsd_tsdn(tsd)) : false;
+	}
+	READ(oldval, bool);
+
+	ret = 0;
+label_return:
+	return ret;
+}
+
+static int
+prof_dump_ctl(tsd_t *tsd, const size_t *mib, size_t miblen,
+    void *oldp, size_t *oldlenp, void *newp, size_t newlen) {
+	int ret;
+	const char *filename = NULL;
+
+	if (!config_prof || !opt_prof) {
+		return ENOENT;
+	}
+
+	WRITEONLY();
+	WRITE(filename, const char *);
+
+	if (prof_mdump(tsd, filename)) {
+		ret = EFAULT;
+		goto label_return;
+	}
+
+	ret = 0;
+label_return:
+	return ret;
+}
+
+static int
+prof_gdump_ctl(tsd_t *tsd, const size_t *mib, size_t miblen,
+    void *oldp, size_t *oldlenp, void *newp, size_t newlen) {
+	int ret;
+	bool oldval;
+
+	if (!config_prof) {
+		return ENOENT;
+	}
+
+	if (newp != NULL) {
+		if (!opt_prof) {
+			ret = ENOENT;
+			goto label_return;
+		}
+		if (newlen != sizeof(bool)) {
+			ret = EINVAL;
+			goto label_return;
+		}
+		oldval = prof_gdump_set(tsd_tsdn(tsd), *(bool *)newp);
+	} else {
+		oldval = opt_prof ? prof_gdump_get(tsd_tsdn(tsd)) : false;
+	}
+	READ(oldval, bool);
+
+	ret = 0;
+label_return:
+	return ret;
+}
+
+static int
+prof_prefix_ctl(tsd_t *tsd, const size_t *mib, size_t miblen,
+    void *oldp, size_t *oldlenp, void *newp, size_t newlen) {
+	int ret;
+	const char *prefix = NULL;
+
+	if (!config_prof || !opt_prof) {
+		return ENOENT;
+	}
+
+	malloc_mutex_lock(tsd_tsdn(tsd), &ctl_mtx);
+	WRITEONLY();
+	WRITE(prefix, const char *);
+
+	ret = prof_prefix_set(tsd_tsdn(tsd), prefix) ? EFAULT : 0;
+label_return:
+	malloc_mutex_unlock(tsd_tsdn(tsd), &ctl_mtx);
+	return ret;
+}
+
+static int
+prof_reset_ctl(tsd_t *tsd, const size_t *mib, size_t miblen,
+    void *oldp, size_t *oldlenp, void *newp, size_t newlen) {
+	int ret;
+	size_t lg_sample = lg_prof_sample;
+
+	if (!config_prof || !opt_prof) {
+		return ENOENT;
+	}
+
+	WRITEONLY();
+	WRITE(lg_sample, size_t);
+	if (lg_sample >= (sizeof(uint64_t) << 3)) {
+		lg_sample = (sizeof(uint64_t) << 3) - 1;
+	}
+
+	prof_reset(tsd, lg_sample);
+
+	ret = 0;
+label_return:
+	return ret;
+}
+
+CTL_RO_NL_CGEN(config_prof, prof_interval, prof_interval, uint64_t)
+CTL_RO_NL_CGEN(config_prof, lg_prof_sample, lg_prof_sample, size_t)
+
+static int
+prof_log_start_ctl(tsd_t *tsd, const size_t *mib, size_t miblen, void *oldp,
+    size_t *oldlenp, void *newp, size_t newlen) {
+	int ret;
+
+	const char *filename = NULL;
+
+	if (!config_prof || !opt_prof) {
+		return ENOENT;
+	}
+
+	WRITEONLY();
+	WRITE(filename, const char *);
+
+	if (prof_log_start(tsd_tsdn(tsd), filename)) {
+		ret = EFAULT;
+		goto label_return;
+	}
+
+	ret = 0;
+label_return:
+	return ret;
+}
+
+static int
+prof_log_stop_ctl(tsd_t *tsd, const size_t *mib, size_t miblen, void *oldp,
+    size_t *oldlenp, void *newp, size_t newlen) {
+	if (!config_prof || !opt_prof) {
+		return ENOENT;
+	}
+
+	if (prof_log_stop(tsd_tsdn(tsd))) {
+		return EFAULT;
+	}
+
+	return 0;
+}
+
+static int
+experimental_hooks_prof_backtrace_ctl(tsd_t *tsd, const size_t *mib,
+    size_t miblen, void *oldp, size_t *oldlenp, void *newp, size_t newlen) {
+	int ret;
+
+	if (oldp == NULL && newp == NULL) {
+		ret = EINVAL;
+		goto label_return;
+	}
+	if (oldp != NULL) {
+		prof_backtrace_hook_t old_hook =
+		    prof_backtrace_hook_get();
+		READ(old_hook, prof_backtrace_hook_t);
+	}
+	if (newp != NULL) {
+		if (!opt_prof) {
+			ret = ENOENT;
+			goto label_return;
+		}
+		prof_backtrace_hook_t new_hook JEMALLOC_CC_SILENCE_INIT(NULL);
+		WRITE(new_hook, prof_backtrace_hook_t);
+		if (new_hook == NULL) {
+			ret = EINVAL;
+			goto label_return;
+		}
+		prof_backtrace_hook_set(new_hook);
+	}
+	ret = 0;
+label_return:
+	return ret;
+}
+
+static int
+experimental_hooks_prof_dump_ctl(tsd_t *tsd, const size_t *mib,
+    size_t miblen, void *oldp, size_t *oldlenp, void *newp, size_t newlen) {
+	int ret;
+
+	if (oldp == NULL && newp == NULL) {
+		ret = EINVAL;
+		goto label_return;
+	}
+	if (oldp != NULL) {
+		prof_dump_hook_t old_hook =
+		    prof_dump_hook_get();
+		READ(old_hook, prof_dump_hook_t);
+	}
+	if (newp != NULL) {
+		if (!opt_prof) {
+			ret = ENOENT;
+			goto label_return;
+		}
+		prof_dump_hook_t new_hook JEMALLOC_CC_SILENCE_INIT(NULL);
+		WRITE(new_hook, prof_dump_hook_t);
+		prof_dump_hook_set(new_hook);
+	}
+	ret = 0;
+label_return:
+	return ret;
+}
+
+/* For integration test purpose only.  No plan to move out of experimental. */
+static int
+experimental_hooks_safety_check_abort_ctl(tsd_t *tsd, const size_t *mib,
+    size_t miblen, void *oldp, size_t *oldlenp, void *newp, size_t newlen) {
+	int ret;
+
+	WRITEONLY();
+	if (newp != NULL) {
+		if (newlen != sizeof(safety_check_abort_hook_t)) {
+			ret = EINVAL;
+			goto label_return;
+		}
+		safety_check_abort_hook_t hook JEMALLOC_CC_SILENCE_INIT(NULL);
+		WRITE(hook, safety_check_abort_hook_t);
+		safety_check_set_abort(hook);
+	}
+	ret = 0;
+label_return:
+	return ret;
+}
+
+/******************************************************************************/
+
+CTL_RO_CGEN(config_stats, stats_allocated, ctl_stats->allocated, size_t)
+CTL_RO_CGEN(config_stats, stats_active, ctl_stats->active, size_t)
+CTL_RO_CGEN(config_stats, stats_metadata, ctl_stats->metadata, size_t)
+CTL_RO_CGEN(config_stats, stats_metadata_thp, ctl_stats->metadata_thp, size_t)
+CTL_RO_CGEN(config_stats, stats_resident, ctl_stats->resident, size_t)
+CTL_RO_CGEN(config_stats, stats_mapped, ctl_stats->mapped, size_t)
+CTL_RO_CGEN(config_stats, stats_retained, ctl_stats->retained, size_t)
+
+CTL_RO_CGEN(config_stats, stats_background_thread_num_threads,
+    ctl_stats->background_thread.num_threads, size_t)
+CTL_RO_CGEN(config_stats, stats_background_thread_num_runs,
+    ctl_stats->background_thread.num_runs, uint64_t)
+CTL_RO_CGEN(config_stats, stats_background_thread_run_interval,
+    nstime_ns(&ctl_stats->background_thread.run_interval), uint64_t)
+
+CTL_RO_CGEN(config_stats, stats_zero_reallocs,
+    atomic_load_zu(&zero_realloc_count, ATOMIC_RELAXED), size_t)
+
+CTL_RO_GEN(stats_arenas_i_dss, arenas_i(mib[2])->dss, const char *)
+CTL_RO_GEN(stats_arenas_i_dirty_decay_ms, arenas_i(mib[2])->dirty_decay_ms,
+    ssize_t)
+CTL_RO_GEN(stats_arenas_i_muzzy_decay_ms, arenas_i(mib[2])->muzzy_decay_ms,
+    ssize_t)
+CTL_RO_GEN(stats_arenas_i_nthreads, arenas_i(mib[2])->nthreads, unsigned)
+CTL_RO_GEN(stats_arenas_i_uptime,
+    nstime_ns(&arenas_i(mib[2])->astats->astats.uptime), uint64_t)
+CTL_RO_GEN(stats_arenas_i_pactive, arenas_i(mib[2])->pactive, size_t)
+CTL_RO_GEN(stats_arenas_i_pdirty, arenas_i(mib[2])->pdirty, size_t)
+CTL_RO_GEN(stats_arenas_i_pmuzzy, arenas_i(mib[2])->pmuzzy, size_t)
+CTL_RO_CGEN(config_stats, stats_arenas_i_mapped,
+    arenas_i(mib[2])->astats->astats.mapped, size_t)
+CTL_RO_CGEN(config_stats, stats_arenas_i_retained,
+    arenas_i(mib[2])->astats->astats.pa_shard_stats.pac_stats.retained, size_t)
+CTL_RO_CGEN(config_stats, stats_arenas_i_extent_avail,
+    arenas_i(mib[2])->astats->astats.pa_shard_stats.edata_avail, size_t)
+
+CTL_RO_CGEN(config_stats, stats_arenas_i_dirty_npurge,
+    locked_read_u64_unsynchronized(
+    &arenas_i(mib[2])->astats->astats.pa_shard_stats.pac_stats.decay_dirty.npurge),
+    uint64_t)
+CTL_RO_CGEN(config_stats, stats_arenas_i_dirty_nmadvise,
+    locked_read_u64_unsynchronized(
+    &arenas_i(mib[2])->astats->astats.pa_shard_stats.pac_stats.decay_dirty.nmadvise),
+    uint64_t)
+CTL_RO_CGEN(config_stats, stats_arenas_i_dirty_purged,
+    locked_read_u64_unsynchronized(
+    &arenas_i(mib[2])->astats->astats.pa_shard_stats.pac_stats.decay_dirty.purged),
+    uint64_t)
+
+CTL_RO_CGEN(config_stats, stats_arenas_i_muzzy_npurge,
+    locked_read_u64_unsynchronized(
+    &arenas_i(mib[2])->astats->astats.pa_shard_stats.pac_stats.decay_muzzy.npurge),
+    uint64_t)
+CTL_RO_CGEN(config_stats, stats_arenas_i_muzzy_nmadvise,
+    locked_read_u64_unsynchronized(
+    &arenas_i(mib[2])->astats->astats.pa_shard_stats.pac_stats.decay_muzzy.nmadvise),
+    uint64_t)
+CTL_RO_CGEN(config_stats, stats_arenas_i_muzzy_purged,
+    locked_read_u64_unsynchronized(
+    &arenas_i(mib[2])->astats->astats.pa_shard_stats.pac_stats.decay_muzzy.purged),
+    uint64_t)
+
+CTL_RO_CGEN(config_stats, stats_arenas_i_base,
+    arenas_i(mib[2])->astats->astats.base,
+    size_t)
+CTL_RO_CGEN(config_stats, stats_arenas_i_internal,
+    atomic_load_zu(&arenas_i(mib[2])->astats->astats.internal, ATOMIC_RELAXED),
+    size_t)
+CTL_RO_CGEN(config_stats, stats_arenas_i_metadata_thp,
+    arenas_i(mib[2])->astats->astats.metadata_thp, size_t)
+CTL_RO_CGEN(config_stats, stats_arenas_i_tcache_bytes,
+    arenas_i(mib[2])->astats->astats.tcache_bytes, size_t)
+CTL_RO_CGEN(config_stats, stats_arenas_i_tcache_stashed_bytes,
+    arenas_i(mib[2])->astats->astats.tcache_stashed_bytes, size_t)
+CTL_RO_CGEN(config_stats, stats_arenas_i_resident,
+    arenas_i(mib[2])->astats->astats.resident,
+    size_t)
+CTL_RO_CGEN(config_stats, stats_arenas_i_abandoned_vm,
+    atomic_load_zu(
+    &arenas_i(mib[2])->astats->astats.pa_shard_stats.pac_stats.abandoned_vm,
+    ATOMIC_RELAXED), size_t)
+
+CTL_RO_CGEN(config_stats, stats_arenas_i_hpa_sec_bytes,
+    arenas_i(mib[2])->astats->secstats.bytes, size_t)
+
+CTL_RO_CGEN(config_stats, stats_arenas_i_small_allocated,
+    arenas_i(mib[2])->astats->allocated_small, size_t)
+CTL_RO_CGEN(config_stats, stats_arenas_i_small_nmalloc,
+    arenas_i(mib[2])->astats->nmalloc_small, uint64_t)
+CTL_RO_CGEN(config_stats, stats_arenas_i_small_ndalloc,
+    arenas_i(mib[2])->astats->ndalloc_small, uint64_t)
+CTL_RO_CGEN(config_stats, stats_arenas_i_small_nrequests,
+    arenas_i(mib[2])->astats->nrequests_small, uint64_t)
+CTL_RO_CGEN(config_stats, stats_arenas_i_small_nfills,
+    arenas_i(mib[2])->astats->nfills_small, uint64_t)
+CTL_RO_CGEN(config_stats, stats_arenas_i_small_nflushes,
+    arenas_i(mib[2])->astats->nflushes_small, uint64_t)
+CTL_RO_CGEN(config_stats, stats_arenas_i_large_allocated,
+    arenas_i(mib[2])->astats->astats.allocated_large, size_t)
+CTL_RO_CGEN(config_stats, stats_arenas_i_large_nmalloc,
+    arenas_i(mib[2])->astats->astats.nmalloc_large, uint64_t)
+CTL_RO_CGEN(config_stats, stats_arenas_i_large_ndalloc,
+    arenas_i(mib[2])->astats->astats.ndalloc_large, uint64_t)
+CTL_RO_CGEN(config_stats, stats_arenas_i_large_nrequests,
+    arenas_i(mib[2])->astats->astats.nrequests_large, uint64_t)
+/*
+ * Note: "nmalloc_large" here instead of "nfills" in the read.  This is
+ * intentional (large has no batch fill).
+ */
+CTL_RO_CGEN(config_stats, stats_arenas_i_large_nfills,
+    arenas_i(mib[2])->astats->astats.nmalloc_large, uint64_t)
+CTL_RO_CGEN(config_stats, stats_arenas_i_large_nflushes,
+    arenas_i(mib[2])->astats->astats.nflushes_large, uint64_t)
+
+/* Lock profiling related APIs below. */
+#define RO_MUTEX_CTL_GEN(n, l)						\
+CTL_RO_CGEN(config_stats, stats_##n##_num_ops,				\
+    l.n_lock_ops, uint64_t)						\
+CTL_RO_CGEN(config_stats, stats_##n##_num_wait,				\
+    l.n_wait_times, uint64_t)						\
+CTL_RO_CGEN(config_stats, stats_##n##_num_spin_acq,			\
+    l.n_spin_acquired, uint64_t)					\
+CTL_RO_CGEN(config_stats, stats_##n##_num_owner_switch,			\
+    l.n_owner_switches, uint64_t) 					\
+CTL_RO_CGEN(config_stats, stats_##n##_total_wait_time,			\
+    nstime_ns(&l.tot_wait_time), uint64_t)				\
+CTL_RO_CGEN(config_stats, stats_##n##_max_wait_time,			\
+    nstime_ns(&l.max_wait_time), uint64_t)				\
+CTL_RO_CGEN(config_stats, stats_##n##_max_num_thds,			\
+    l.max_n_thds, uint32_t)
+
+/* Global mutexes. */
+#define OP(mtx)								\
+    RO_MUTEX_CTL_GEN(mutexes_##mtx,					\
+        ctl_stats->mutex_prof_data[global_prof_mutex_##mtx])
+MUTEX_PROF_GLOBAL_MUTEXES
+#undef OP
+
+/* Per arena mutexes */
+#define OP(mtx) RO_MUTEX_CTL_GEN(arenas_i_mutexes_##mtx,		\
+    arenas_i(mib[2])->astats->astats.mutex_prof_data[arena_prof_mutex_##mtx])
+MUTEX_PROF_ARENA_MUTEXES
+#undef OP
+
+/* tcache bin mutex */
+RO_MUTEX_CTL_GEN(arenas_i_bins_j_mutex,
+    arenas_i(mib[2])->astats->bstats[mib[4]].mutex_data)
+#undef RO_MUTEX_CTL_GEN
+
+/* Resets all mutex stats, including global, arena and bin mutexes. */
+static int
+stats_mutexes_reset_ctl(tsd_t *tsd, const size_t *mib,
+    size_t miblen, void *oldp, size_t *oldlenp,
+    void *newp, size_t newlen) {
+	if (!config_stats) {
+		return ENOENT;
+	}
+
+	tsdn_t *tsdn = tsd_tsdn(tsd);
+
+#define MUTEX_PROF_RESET(mtx)						\
+    malloc_mutex_lock(tsdn, &mtx);					\
+    malloc_mutex_prof_data_reset(tsdn, &mtx);				\
+    malloc_mutex_unlock(tsdn, &mtx);
+
+	/* Global mutexes: ctl and prof. */
+	MUTEX_PROF_RESET(ctl_mtx);
+	if (have_background_thread) {
+		MUTEX_PROF_RESET(background_thread_lock);
+	}
+	if (config_prof && opt_prof) {
+		MUTEX_PROF_RESET(bt2gctx_mtx);
+		MUTEX_PROF_RESET(tdatas_mtx);
+		MUTEX_PROF_RESET(prof_dump_mtx);
+		MUTEX_PROF_RESET(prof_recent_alloc_mtx);
+		MUTEX_PROF_RESET(prof_recent_dump_mtx);
+		MUTEX_PROF_RESET(prof_stats_mtx);
+	}
+
+	/* Per arena mutexes. */
+	unsigned n = narenas_total_get();
+
+	for (unsigned i = 0; i < n; i++) {
+		arena_t *arena = arena_get(tsdn, i, false);
+		if (!arena) {
+			continue;
+		}
+		MUTEX_PROF_RESET(arena->large_mtx);
+		MUTEX_PROF_RESET(arena->pa_shard.edata_cache.mtx);
+		MUTEX_PROF_RESET(arena->pa_shard.pac.ecache_dirty.mtx);
+		MUTEX_PROF_RESET(arena->pa_shard.pac.ecache_muzzy.mtx);
+		MUTEX_PROF_RESET(arena->pa_shard.pac.ecache_retained.mtx);
+		MUTEX_PROF_RESET(arena->pa_shard.pac.decay_dirty.mtx);
+		MUTEX_PROF_RESET(arena->pa_shard.pac.decay_muzzy.mtx);
+		MUTEX_PROF_RESET(arena->tcache_ql_mtx);
+		MUTEX_PROF_RESET(arena->base->mtx);
+
+		for (szind_t j = 0; j < SC_NBINS; j++) {
+			for (unsigned k = 0; k < bin_infos[j].n_shards; k++) {
+				bin_t *bin = arena_get_bin(arena, j, k);
+				MUTEX_PROF_RESET(bin->lock);
+			}
+		}
+	}
+#undef MUTEX_PROF_RESET
+	return 0;
+}
+
+CTL_RO_CGEN(config_stats, stats_arenas_i_bins_j_nmalloc,
+    arenas_i(mib[2])->astats->bstats[mib[4]].stats_data.nmalloc, uint64_t)
+CTL_RO_CGEN(config_stats, stats_arenas_i_bins_j_ndalloc,
+    arenas_i(mib[2])->astats->bstats[mib[4]].stats_data.ndalloc, uint64_t)
+CTL_RO_CGEN(config_stats, stats_arenas_i_bins_j_nrequests,
+    arenas_i(mib[2])->astats->bstats[mib[4]].stats_data.nrequests, uint64_t)
+CTL_RO_CGEN(config_stats, stats_arenas_i_bins_j_curregs,
+    arenas_i(mib[2])->astats->bstats[mib[4]].stats_data.curregs, size_t)
+CTL_RO_CGEN(config_stats, stats_arenas_i_bins_j_nfills,
+    arenas_i(mib[2])->astats->bstats[mib[4]].stats_data.nfills, uint64_t)
+CTL_RO_CGEN(config_stats, stats_arenas_i_bins_j_nflushes,
+    arenas_i(mib[2])->astats->bstats[mib[4]].stats_data.nflushes, uint64_t)
+CTL_RO_CGEN(config_stats, stats_arenas_i_bins_j_nslabs,
+    arenas_i(mib[2])->astats->bstats[mib[4]].stats_data.nslabs, uint64_t)
+CTL_RO_CGEN(config_stats, stats_arenas_i_bins_j_nreslabs,
+    arenas_i(mib[2])->astats->bstats[mib[4]].stats_data.reslabs, uint64_t)
+CTL_RO_CGEN(config_stats, stats_arenas_i_bins_j_curslabs,
+    arenas_i(mib[2])->astats->bstats[mib[4]].stats_data.curslabs, size_t)
+CTL_RO_CGEN(config_stats, stats_arenas_i_bins_j_nonfull_slabs,
+    arenas_i(mib[2])->astats->bstats[mib[4]].stats_data.nonfull_slabs, size_t)
+
+static const ctl_named_node_t *
+stats_arenas_i_bins_j_index(tsdn_t *tsdn, const size_t *mib,
+    size_t miblen, size_t j) {
+	if (j > SC_NBINS) {
+		return NULL;
+	}
+	return super_stats_arenas_i_bins_j_node;
+}
+
+CTL_RO_CGEN(config_stats, stats_arenas_i_lextents_j_nmalloc,
+    locked_read_u64_unsynchronized(
+    &arenas_i(mib[2])->astats->lstats[mib[4]].nmalloc), uint64_t)
+CTL_RO_CGEN(config_stats, stats_arenas_i_lextents_j_ndalloc,
+    locked_read_u64_unsynchronized(
+    &arenas_i(mib[2])->astats->lstats[mib[4]].ndalloc), uint64_t)
+CTL_RO_CGEN(config_stats, stats_arenas_i_lextents_j_nrequests,
+    locked_read_u64_unsynchronized(
+    &arenas_i(mib[2])->astats->lstats[mib[4]].nrequests), uint64_t)
+CTL_RO_CGEN(config_stats, stats_arenas_i_lextents_j_curlextents,
+    arenas_i(mib[2])->astats->lstats[mib[4]].curlextents, size_t)
+
+static const ctl_named_node_t *
+stats_arenas_i_lextents_j_index(tsdn_t *tsdn, const size_t *mib,
+    size_t miblen, size_t j) {
+	if (j > SC_NSIZES - SC_NBINS) {
+		return NULL;
+	}
+	return super_stats_arenas_i_lextents_j_node;
+}
+
+CTL_RO_CGEN(config_stats, stats_arenas_i_extents_j_ndirty,
+        arenas_i(mib[2])->astats->estats[mib[4]].ndirty, size_t);
+CTL_RO_CGEN(config_stats, stats_arenas_i_extents_j_nmuzzy,
+        arenas_i(mib[2])->astats->estats[mib[4]].nmuzzy, size_t);
+CTL_RO_CGEN(config_stats, stats_arenas_i_extents_j_nretained,
+        arenas_i(mib[2])->astats->estats[mib[4]].nretained, size_t);
+CTL_RO_CGEN(config_stats, stats_arenas_i_extents_j_dirty_bytes,
+        arenas_i(mib[2])->astats->estats[mib[4]].dirty_bytes, size_t);
+CTL_RO_CGEN(config_stats, stats_arenas_i_extents_j_muzzy_bytes,
+        arenas_i(mib[2])->astats->estats[mib[4]].muzzy_bytes, size_t);
+CTL_RO_CGEN(config_stats, stats_arenas_i_extents_j_retained_bytes,
+        arenas_i(mib[2])->astats->estats[mib[4]].retained_bytes, size_t);
+
+static const ctl_named_node_t *
+stats_arenas_i_extents_j_index(tsdn_t *tsdn, const size_t *mib,
+    size_t miblen, size_t j) {
+	if (j >= SC_NPSIZES) {
+		return NULL;
+	}
+	return super_stats_arenas_i_extents_j_node;
+}
+
+CTL_RO_CGEN(config_stats, stats_arenas_i_hpa_shard_npurge_passes,
+    arenas_i(mib[2])->astats->hpastats.nonderived_stats.npurge_passes, uint64_t);
+CTL_RO_CGEN(config_stats, stats_arenas_i_hpa_shard_npurges,
+    arenas_i(mib[2])->astats->hpastats.nonderived_stats.npurges, uint64_t);
+CTL_RO_CGEN(config_stats, stats_arenas_i_hpa_shard_nhugifies,
+    arenas_i(mib[2])->astats->hpastats.nonderived_stats.nhugifies, uint64_t);
+CTL_RO_CGEN(config_stats, stats_arenas_i_hpa_shard_ndehugifies,
+    arenas_i(mib[2])->astats->hpastats.nonderived_stats.ndehugifies, uint64_t);
+
+/* Full, nonhuge */
+CTL_RO_CGEN(config_stats, stats_arenas_i_hpa_shard_full_slabs_npageslabs_nonhuge,
+    arenas_i(mib[2])->astats->hpastats.psset_stats.full_slabs[0].npageslabs,
+    size_t);
+CTL_RO_CGEN(config_stats, stats_arenas_i_hpa_shard_full_slabs_nactive_nonhuge,
+    arenas_i(mib[2])->astats->hpastats.psset_stats.full_slabs[0].nactive, size_t);
+CTL_RO_CGEN(config_stats, stats_arenas_i_hpa_shard_full_slabs_ndirty_nonhuge,
+    arenas_i(mib[2])->astats->hpastats.psset_stats.full_slabs[0].ndirty, size_t);
+
+/* Full, huge */
+CTL_RO_CGEN(config_stats, stats_arenas_i_hpa_shard_full_slabs_npageslabs_huge,
+    arenas_i(mib[2])->astats->hpastats.psset_stats.full_slabs[1].npageslabs,
+    size_t);
+CTL_RO_CGEN(config_stats, stats_arenas_i_hpa_shard_full_slabs_nactive_huge,
+    arenas_i(mib[2])->astats->hpastats.psset_stats.full_slabs[1].nactive, size_t);
+CTL_RO_CGEN(config_stats, stats_arenas_i_hpa_shard_full_slabs_ndirty_huge,
+    arenas_i(mib[2])->astats->hpastats.psset_stats.full_slabs[1].ndirty, size_t);
+
+/* Empty, nonhuge */
+CTL_RO_CGEN(config_stats, stats_arenas_i_hpa_shard_empty_slabs_npageslabs_nonhuge,
+    arenas_i(mib[2])->astats->hpastats.psset_stats.empty_slabs[0].npageslabs,
+    size_t);
+CTL_RO_CGEN(config_stats, stats_arenas_i_hpa_shard_empty_slabs_nactive_nonhuge,
+    arenas_i(mib[2])->astats->hpastats.psset_stats.empty_slabs[0].nactive, size_t);
+CTL_RO_CGEN(config_stats, stats_arenas_i_hpa_shard_empty_slabs_ndirty_nonhuge,
+    arenas_i(mib[2])->astats->hpastats.psset_stats.empty_slabs[0].ndirty, size_t);
+
+/* Empty, huge */
+CTL_RO_CGEN(config_stats, stats_arenas_i_hpa_shard_empty_slabs_npageslabs_huge,
+    arenas_i(mib[2])->astats->hpastats.psset_stats.empty_slabs[1].npageslabs,
+    size_t);
+CTL_RO_CGEN(config_stats, stats_arenas_i_hpa_shard_empty_slabs_nactive_huge,
+    arenas_i(mib[2])->astats->hpastats.psset_stats.empty_slabs[1].nactive, size_t);
+CTL_RO_CGEN(config_stats, stats_arenas_i_hpa_shard_empty_slabs_ndirty_huge,
+    arenas_i(mib[2])->astats->hpastats.psset_stats.empty_slabs[1].ndirty, size_t);
+
+/* Nonfull, nonhuge */
+CTL_RO_CGEN(config_stats, stats_arenas_i_hpa_shard_nonfull_slabs_j_npageslabs_nonhuge,
+    arenas_i(mib[2])->astats->hpastats.psset_stats.nonfull_slabs[mib[5]][0].npageslabs,
+    size_t);
+CTL_RO_CGEN(config_stats, stats_arenas_i_hpa_shard_nonfull_slabs_j_nactive_nonhuge,
+    arenas_i(mib[2])->astats->hpastats.psset_stats.nonfull_slabs[mib[5]][0].nactive,
+    size_t);
+CTL_RO_CGEN(config_stats, stats_arenas_i_hpa_shard_nonfull_slabs_j_ndirty_nonhuge,
+    arenas_i(mib[2])->astats->hpastats.psset_stats.nonfull_slabs[mib[5]][0].ndirty,
+    size_t);
+
+/* Nonfull, huge */
+CTL_RO_CGEN(config_stats, stats_arenas_i_hpa_shard_nonfull_slabs_j_npageslabs_huge,
+    arenas_i(mib[2])->astats->hpastats.psset_stats.nonfull_slabs[mib[5]][1].npageslabs,
+    size_t);
+CTL_RO_CGEN(config_stats, stats_arenas_i_hpa_shard_nonfull_slabs_j_nactive_huge,
+    arenas_i(mib[2])->astats->hpastats.psset_stats.nonfull_slabs[mib[5]][1].nactive,
+    size_t);
+CTL_RO_CGEN(config_stats, stats_arenas_i_hpa_shard_nonfull_slabs_j_ndirty_huge,
+    arenas_i(mib[2])->astats->hpastats.psset_stats.nonfull_slabs[mib[5]][1].ndirty,
+    size_t);
+
+static const ctl_named_node_t *
+stats_arenas_i_hpa_shard_nonfull_slabs_j_index(tsdn_t *tsdn, const size_t *mib,
+    size_t miblen, size_t j) {
+	if (j >= PSSET_NPSIZES) {
+		return NULL;
+	}
+	return super_stats_arenas_i_hpa_shard_nonfull_slabs_j_node;
+}
+
+static bool
+ctl_arenas_i_verify(size_t i) {
+	size_t a = arenas_i2a_impl(i, true, true);
+	if (a == UINT_MAX || !ctl_arenas->arenas[a]->initialized) {
+		return true;
+	}
+
+	return false;
+}
+
+static const ctl_named_node_t *
+stats_arenas_i_index(tsdn_t *tsdn, const size_t *mib,
+    size_t miblen, size_t i) {
+	const ctl_named_node_t *ret;
+
+	malloc_mutex_lock(tsdn, &ctl_mtx);
+	if (ctl_arenas_i_verify(i)) {
+		ret = NULL;
+		goto label_return;
+	}
+
+	ret = super_stats_arenas_i_node;
+label_return:
+	malloc_mutex_unlock(tsdn, &ctl_mtx);
+	return ret;
+}
+
+static int
+experimental_hooks_install_ctl(tsd_t *tsd, const size_t *mib, size_t miblen,
+    void *oldp, size_t *oldlenp, void *newp, size_t newlen) {
+	int ret;
+	if (oldp == NULL || oldlenp == NULL|| newp == NULL) {
+		ret = EINVAL;
+		goto label_return;
+	}
+	/*
+	 * Note: this is a *private* struct.  This is an experimental interface;
+	 * forcing the user to know the jemalloc internals well enough to
+	 * extract the ABI hopefully ensures nobody gets too comfortable with
+	 * this API, which can change at a moment's notice.
+	 */
+	hooks_t hooks;
+	WRITE(hooks, hooks_t);
+	void *handle = hook_install(tsd_tsdn(tsd), &hooks);
+	if (handle == NULL) {
+		ret = EAGAIN;
+		goto label_return;
+	}
+	READ(handle, void *);
+
+	ret = 0;
+label_return:
+	return ret;
+}
+
+static int
+experimental_hooks_remove_ctl(tsd_t *tsd, const size_t *mib, size_t miblen,
+    void *oldp, size_t *oldlenp, void *newp, size_t newlen) {
+	int ret;
+	WRITEONLY();
+	void *handle = NULL;
+	WRITE(handle, void *);
+	if (handle == NULL) {
+		ret = EINVAL;
+		goto label_return;
+	}
+	hook_remove(tsd_tsdn(tsd), handle);
+	ret = 0;
+label_return:
+	return ret;
+}
+
+static int
+experimental_thread_activity_callback_ctl(tsd_t *tsd, const size_t *mib,
+    size_t miblen, void *oldp, size_t *oldlenp, void *newp, size_t newlen) {
+	int ret;
+
+	if (!config_stats) {
+		return ENOENT;
+	}
+
+	activity_callback_thunk_t t_old = tsd_activity_callback_thunk_get(tsd);
+	READ(t_old, activity_callback_thunk_t);
+
+	if (newp != NULL) {
+		/*
+		 * This initialization is unnecessary.  If it's omitted, though,
+		 * clang gets confused and warns on the subsequent use of t_new.
+		 */
+		activity_callback_thunk_t t_new = {NULL, NULL};
+		WRITE(t_new, activity_callback_thunk_t);
+		tsd_activity_callback_thunk_set(tsd, t_new);
+	}
+	ret = 0;
+label_return:
+	return ret;
+}
+
+/*
+ * Output six memory utilization entries for an input pointer, the first one of
+ * type (void *) and the remaining five of type size_t, describing the following
+ * (in the same order):
+ *
+ * (a) memory address of the extent a potential reallocation would go into,
+ * == the five fields below describe about the extent the pointer resides in ==
+ * (b) number of free regions in the extent,
+ * (c) number of regions in the extent,
+ * (d) size of the extent in terms of bytes,
+ * (e) total number of free regions in the bin the extent belongs to, and
+ * (f) total number of regions in the bin the extent belongs to.
+ *
+ * Note that "(e)" and "(f)" are only available when stats are enabled;
+ * otherwise their values are undefined.
+ *
+ * This API is mainly intended for small class allocations, where extents are
+ * used as slab.  Note that if the bin the extent belongs to is completely
+ * full, "(a)" will be NULL.
+ *
+ * In case of large class allocations, "(a)" will be NULL, and "(e)" and "(f)"
+ * will be zero (if stats are enabled; otherwise undefined).  The other three
+ * fields will be properly set though the values are trivial: "(b)" will be 0,
+ * "(c)" will be 1, and "(d)" will be the usable size.
+ *
+ * The input pointer and size are respectively passed in by newp and newlen,
+ * and the output fields and size are respectively oldp and *oldlenp.
+ *
+ * It can be beneficial to define the following macros to make it easier to
+ * access the output:
+ *
+ * #define SLABCUR_READ(out) (*(void **)out)
+ * #define COUNTS(out) ((size_t *)((void **)out + 1))
+ * #define NFREE_READ(out) COUNTS(out)[0]
+ * #define NREGS_READ(out) COUNTS(out)[1]
+ * #define SIZE_READ(out) COUNTS(out)[2]
+ * #define BIN_NFREE_READ(out) COUNTS(out)[3]
+ * #define BIN_NREGS_READ(out) COUNTS(out)[4]
+ *
+ * and then write e.g. NFREE_READ(oldp) to fetch the output.  See the unit test
+ * test_query in test/unit/extent_util.c for an example.
+ *
+ * For a typical defragmentation workflow making use of this API for
+ * understanding the fragmentation level, please refer to the comment for
+ * experimental_utilization_batch_query_ctl.
+ *
+ * It's up to the application how to determine the significance of
+ * fragmentation relying on the outputs returned.  Possible choices are:
+ *
+ * (a) if extent utilization ratio is below certain threshold,
+ * (b) if extent memory consumption is above certain threshold,
+ * (c) if extent utilization ratio is significantly below bin utilization ratio,
+ * (d) if input pointer deviates a lot from potential reallocation address, or
+ * (e) some selection/combination of the above.
+ *
+ * The caller needs to make sure that the input/output arguments are valid,
+ * in particular, that the size of the output is correct, i.e.:
+ *
+ *     *oldlenp = sizeof(void *) + sizeof(size_t) * 5
+ *
+ * Otherwise, the function immediately returns EINVAL without touching anything.
+ *
+ * In the rare case where there's no associated extent found for the input
+ * pointer, the function zeros out all output fields and return.  Please refer
+ * to the comment for experimental_utilization_batch_query_ctl to understand the
+ * motivation from C++.
+ */
+static int
+experimental_utilization_query_ctl(tsd_t *tsd, const size_t *mib,
+    size_t miblen, void *oldp, size_t *oldlenp, void *newp, size_t newlen) {
+	int ret;
+
+	assert(sizeof(inspect_extent_util_stats_verbose_t)
+	    == sizeof(void *) + sizeof(size_t) * 5);
+
+	if (oldp == NULL || oldlenp == NULL
+	    || *oldlenp != sizeof(inspect_extent_util_stats_verbose_t)
+	    || newp == NULL) {
+		ret = EINVAL;
+		goto label_return;
+	}
+
+	void *ptr = NULL;
+	WRITE(ptr, void *);
+	inspect_extent_util_stats_verbose_t *util_stats
+	    = (inspect_extent_util_stats_verbose_t *)oldp;
+	inspect_extent_util_stats_verbose_get(tsd_tsdn(tsd), ptr,
+	    &util_stats->nfree, &util_stats->nregs, &util_stats->size,
+	    &util_stats->bin_nfree, &util_stats->bin_nregs,
+	    &util_stats->slabcur_addr);
+	ret = 0;
+
+label_return:
+	return ret;
+}
+
+/*
+ * Given an input array of pointers, output three memory utilization entries of
+ * type size_t for each input pointer about the extent it resides in:
+ *
+ * (a) number of free regions in the extent,
+ * (b) number of regions in the extent, and
+ * (c) size of the extent in terms of bytes.
+ *
+ * This API is mainly intended for small class allocations, where extents are
+ * used as slab.  In case of large class allocations, the outputs are trivial:
+ * "(a)" will be 0, "(b)" will be 1, and "(c)" will be the usable size.
+ *
+ * Note that multiple input pointers may reside on a same extent so the output
+ * fields may contain duplicates.
+ *
+ * The format of the input/output looks like:
+ *
+ * input[0]:  1st_pointer_to_query	|  output[0]: 1st_extent_n_free_regions
+ *					|  output[1]: 1st_extent_n_regions
+ *					|  output[2]: 1st_extent_size
+ * input[1]:  2nd_pointer_to_query	|  output[3]: 2nd_extent_n_free_regions
+ *					|  output[4]: 2nd_extent_n_regions
+ *					|  output[5]: 2nd_extent_size
+ * ...					|  ...
+ *
+ * The input array and size are respectively passed in by newp and newlen, and
+ * the output array and size are respectively oldp and *oldlenp.
+ *
+ * It can be beneficial to define the following macros to make it easier to
+ * access the output:
+ *
+ * #define NFREE_READ(out, i) out[(i) * 3]
+ * #define NREGS_READ(out, i) out[(i) * 3 + 1]
+ * #define SIZE_READ(out, i) out[(i) * 3 + 2]
+ *
+ * and then write e.g. NFREE_READ(oldp, i) to fetch the output.  See the unit
+ * test test_batch in test/unit/extent_util.c for a concrete example.
+ *
+ * A typical workflow would be composed of the following steps:
+ *
+ * (1) flush tcache: mallctl("thread.tcache.flush", ...)
+ * (2) initialize input array of pointers to query fragmentation
+ * (3) allocate output array to hold utilization statistics
+ * (4) query utilization: mallctl("experimental.utilization.batch_query", ...)
+ * (5) (optional) decide if it's worthwhile to defragment; otherwise stop here
+ * (6) disable tcache: mallctl("thread.tcache.enabled", ...)
+ * (7) defragment allocations with significant fragmentation, e.g.:
+ *         for each allocation {
+ *             if it's fragmented {
+ *                 malloc(...);
+ *                 memcpy(...);
+ *                 free(...);
+ *             }
+ *         }
+ * (8) enable tcache: mallctl("thread.tcache.enabled", ...)
+ *
+ * The application can determine the significance of fragmentation themselves
+ * relying on the statistics returned, both at the overall level i.e. step "(5)"
+ * and at individual allocation level i.e. within step "(7)".  Possible choices
+ * are:
+ *
+ * (a) whether memory utilization ratio is below certain threshold,
+ * (b) whether memory consumption is above certain threshold, or
+ * (c) some combination of the two.
+ *
+ * The caller needs to make sure that the input/output arrays are valid and
+ * their sizes are proper as well as matched, meaning:
+ *
+ * (a) newlen = n_pointers * sizeof(const void *)
+ * (b) *oldlenp = n_pointers * sizeof(size_t) * 3
+ * (c) n_pointers > 0
+ *
+ * Otherwise, the function immediately returns EINVAL without touching anything.
+ *
+ * In the rare case where there's no associated extent found for some pointers,
+ * rather than immediately terminating the computation and raising an error,
+ * the function simply zeros out the corresponding output fields and continues
+ * the computation until all input pointers are handled.  The motivations of
+ * such a design are as follows:
+ *
+ * (a) The function always either processes nothing or processes everything, and
+ * never leaves the output half touched and half untouched.
+ *
+ * (b) It facilitates usage needs especially common in C++.  A vast variety of
+ * C++ objects are instantiated with multiple dynamic memory allocations.  For
+ * example, std::string and std::vector typically use at least two allocations,
+ * one for the metadata and one for the actual content.  Other types may use
+ * even more allocations.  When inquiring about utilization statistics, the
+ * caller often wants to examine into all such allocations, especially internal
+ * one(s), rather than just the topmost one.  The issue comes when some
+ * implementations do certain optimizations to reduce/aggregate some internal
+ * allocations, e.g. putting short strings directly into the metadata, and such
+ * decisions are not known to the caller.  Therefore, we permit pointers to
+ * memory usages that may not be returned by previous malloc calls, and we
+ * provide the caller a convenient way to identify such cases.
+ */
+static int
+experimental_utilization_batch_query_ctl(tsd_t *tsd, const size_t *mib,
+    size_t miblen, void *oldp, size_t *oldlenp, void *newp, size_t newlen) {
+	int ret;
+
+	assert(sizeof(inspect_extent_util_stats_t) == sizeof(size_t) * 3);
+
+	const size_t len = newlen / sizeof(const void *);
+	if (oldp == NULL || oldlenp == NULL || newp == NULL || newlen == 0
+	    || newlen != len * sizeof(const void *)
+	    || *oldlenp != len * sizeof(inspect_extent_util_stats_t)) {
+		ret = EINVAL;
+		goto label_return;
+	}
+
+	void **ptrs = (void **)newp;
+	inspect_extent_util_stats_t *util_stats =
+	    (inspect_extent_util_stats_t *)oldp;
+	size_t i;
+	for (i = 0; i < len; ++i) {
+		inspect_extent_util_stats_get(tsd_tsdn(tsd), ptrs[i],
+		    &util_stats[i].nfree, &util_stats[i].nregs,
+		    &util_stats[i].size);
+	}
+	ret = 0;
+
+label_return:
+	return ret;
+}
+
+static const ctl_named_node_t *
+experimental_arenas_i_index(tsdn_t *tsdn, const size_t *mib,
+    size_t miblen, size_t i) {
+	const ctl_named_node_t *ret;
+
+	malloc_mutex_lock(tsdn, &ctl_mtx);
+	if (ctl_arenas_i_verify(i)) {
+		ret = NULL;
+		goto label_return;
+	}
+	ret = super_experimental_arenas_i_node;
+label_return:
+	malloc_mutex_unlock(tsdn, &ctl_mtx);
+	return ret;
+}
+
+static int
+experimental_arenas_i_pactivep_ctl(tsd_t *tsd, const size_t *mib,
+    size_t miblen, void *oldp, size_t *oldlenp, void *newp, size_t newlen) {
+	if (!config_stats) {
+		return ENOENT;
+	}
+	if (oldp == NULL || oldlenp == NULL || *oldlenp != sizeof(size_t *)) {
+		return EINVAL;
+	}
+
+	unsigned arena_ind;
+	arena_t *arena;
+	int ret;
+	size_t *pactivep;
+
+	malloc_mutex_lock(tsd_tsdn(tsd), &ctl_mtx);
+	READONLY();
+	MIB_UNSIGNED(arena_ind, 2);
+	if (arena_ind < narenas_total_get() && (arena =
+	    arena_get(tsd_tsdn(tsd), arena_ind, false)) != NULL) {
+#if defined(JEMALLOC_GCC_ATOMIC_ATOMICS) ||				\
+    defined(JEMALLOC_GCC_SYNC_ATOMICS) || defined(_MSC_VER)
+		/* Expose the underlying counter for fast read. */
+		pactivep = (size_t *)&(arena->pa_shard.nactive.repr);
+		READ(pactivep, size_t *);
+		ret = 0;
+#else
+		ret = EFAULT;
+#endif
+	} else {
+		ret = EFAULT;
+	}
+label_return:
+	malloc_mutex_unlock(tsd_tsdn(tsd), &ctl_mtx);
+	return ret;
+}
+
+static int
+experimental_prof_recent_alloc_max_ctl(tsd_t *tsd, const size_t *mib,
+    size_t miblen, void *oldp, size_t *oldlenp, void *newp, size_t newlen) {
+	int ret;
+
+	if (!(config_prof && opt_prof)) {
+		ret = ENOENT;
+		goto label_return;
+	}
+
+	ssize_t old_max;
+	if (newp != NULL) {
+		if (newlen != sizeof(ssize_t)) {
+			ret = EINVAL;
+			goto label_return;
+		}
+		ssize_t max = *(ssize_t *)newp;
+		if (max < -1) {
+			ret = EINVAL;
+			goto label_return;
+		}
+		old_max = prof_recent_alloc_max_ctl_write(tsd, max);
+	} else {
+		old_max = prof_recent_alloc_max_ctl_read();
+	}
+	READ(old_max, ssize_t);
+
+	ret = 0;
+
+label_return:
+	return ret;
+}
+
+typedef struct write_cb_packet_s write_cb_packet_t;
+struct write_cb_packet_s {
+	write_cb_t *write_cb;
+	void *cbopaque;
+};
+
+static int
+experimental_prof_recent_alloc_dump_ctl(tsd_t *tsd, const size_t *mib,
+    size_t miblen, void *oldp, size_t *oldlenp, void *newp, size_t newlen) {
+	int ret;
+
+	if (!(config_prof && opt_prof)) {
+		ret = ENOENT;
+		goto label_return;
+	}
+
+	assert(sizeof(write_cb_packet_t) == sizeof(void *) * 2);
+
+	WRITEONLY();
+	write_cb_packet_t write_cb_packet;
+	ASSURED_WRITE(write_cb_packet, write_cb_packet_t);
+
+	prof_recent_alloc_dump(tsd, write_cb_packet.write_cb,
+	    write_cb_packet.cbopaque);
+
+	ret = 0;
+
+label_return:
+	return ret;
+}
+
+typedef struct batch_alloc_packet_s batch_alloc_packet_t;
+struct batch_alloc_packet_s {
+	void **ptrs;
+	size_t num;
+	size_t size;
+	int flags;
+};
+
+static int
+experimental_batch_alloc_ctl(tsd_t *tsd, const size_t *mib,
+    size_t miblen, void *oldp, size_t *oldlenp, void *newp, size_t newlen) {
+	int ret;
+
+	VERIFY_READ(size_t);
+
+	batch_alloc_packet_t batch_alloc_packet;
+	ASSURED_WRITE(batch_alloc_packet, batch_alloc_packet_t);
+	size_t filled = batch_alloc(batch_alloc_packet.ptrs,
+	    batch_alloc_packet.num, batch_alloc_packet.size,
+	    batch_alloc_packet.flags);
+	READ(filled, size_t);
+
+	ret = 0;
+
+label_return:
+	return ret;
+}
+
+static int
+prof_stats_bins_i_live_ctl(tsd_t *tsd, const size_t *mib, size_t miblen,
+    void *oldp, size_t *oldlenp, void *newp, size_t newlen) {
+	int ret;
+	unsigned binind;
+	prof_stats_t stats;
+
+	if (!(config_prof && opt_prof && opt_prof_stats)) {
+		ret = ENOENT;
+		goto label_return;
+	}
+
+	READONLY();
+	MIB_UNSIGNED(binind, 3);
+	if (binind >= SC_NBINS) {
+		ret = EINVAL;
+		goto label_return;
+	}
+	prof_stats_get_live(tsd, (szind_t)binind, &stats);
+	READ(stats, prof_stats_t);
+
+	ret = 0;
+label_return:
+	return ret;
+}
+
+static int
+prof_stats_bins_i_accum_ctl(tsd_t *tsd, const size_t *mib, size_t miblen,
+    void *oldp, size_t *oldlenp, void *newp, size_t newlen) {
+	int ret;
+	unsigned binind;
+	prof_stats_t stats;
+
+	if (!(config_prof && opt_prof && opt_prof_stats)) {
+		ret = ENOENT;
+		goto label_return;
+	}
+
+	READONLY();
+	MIB_UNSIGNED(binind, 3);
+	if (binind >= SC_NBINS) {
+		ret = EINVAL;
+		goto label_return;
+	}
+	prof_stats_get_accum(tsd, (szind_t)binind, &stats);
+	READ(stats, prof_stats_t);
+
+	ret = 0;
+label_return:
+	return ret;
+}
+
+static const ctl_named_node_t *
+prof_stats_bins_i_index(tsdn_t *tsdn, const size_t *mib, size_t miblen,
+    size_t i) {
+	if (!(config_prof && opt_prof && opt_prof_stats)) {
+		return NULL;
+	}
+	if (i >= SC_NBINS) {
+		return NULL;
+	}
+	return super_prof_stats_bins_i_node;
+}
+
+static int
+prof_stats_lextents_i_live_ctl(tsd_t *tsd, const size_t *mib, size_t miblen,
+    void *oldp, size_t *oldlenp, void *newp, size_t newlen) {
+	int ret;
+	unsigned lextent_ind;
+	prof_stats_t stats;
+
+	if (!(config_prof && opt_prof && opt_prof_stats)) {
+		ret = ENOENT;
+		goto label_return;
+	}
+
+	READONLY();
+	MIB_UNSIGNED(lextent_ind, 3);
+	if (lextent_ind >= SC_NSIZES - SC_NBINS) {
+		ret = EINVAL;
+		goto label_return;
+	}
+	prof_stats_get_live(tsd, (szind_t)(lextent_ind + SC_NBINS), &stats);
+	READ(stats, prof_stats_t);
+
+	ret = 0;
+label_return:
+	return ret;
+}
+
+static int
+prof_stats_lextents_i_accum_ctl(tsd_t *tsd, const size_t *mib, size_t miblen,
+    void *oldp, size_t *oldlenp, void *newp, size_t newlen) {
+	int ret;
+	unsigned lextent_ind;
+	prof_stats_t stats;
+
+	if (!(config_prof && opt_prof && opt_prof_stats)) {
+		ret = ENOENT;
+		goto label_return;
+	}
+
+	READONLY();
+	MIB_UNSIGNED(lextent_ind, 3);
+	if (lextent_ind >= SC_NSIZES - SC_NBINS) {
+		ret = EINVAL;
+		goto label_return;
+	}
+	prof_stats_get_accum(tsd, (szind_t)(lextent_ind + SC_NBINS), &stats);
+	READ(stats, prof_stats_t);
+
+	ret = 0;
+label_return:
+	return ret;
+}
+
+static const ctl_named_node_t *
+prof_stats_lextents_i_index(tsdn_t *tsdn, const size_t *mib, size_t miblen,
+    size_t i) {
+	if (!(config_prof && opt_prof && opt_prof_stats)) {
+		return NULL;
+	}
+	if (i >= SC_NSIZES - SC_NBINS) {
+		return NULL;
+	}
+	return super_prof_stats_lextents_i_node;
+}
diff --git a/deps/jemalloc/src/decay.c b/deps/jemalloc/src/decay.c
new file mode 100644
index 0000000..d801b2b
--- /dev/null
+++ b/deps/jemalloc/src/decay.c
@@ -0,0 +1,295 @@
+#include "jemalloc/internal/jemalloc_preamble.h"
+#include "jemalloc/internal/jemalloc_internal_includes.h"
+
+#include "jemalloc/internal/decay.h"
+
+static const uint64_t h_steps[SMOOTHSTEP_NSTEPS] = {
+#define STEP(step, h, x, y)			\
+		h,
+		SMOOTHSTEP
+#undef STEP
+};
+
+/*
+ * Generate a new deadline that is uniformly random within the next epoch after
+ * the current one.
+ */
+void
+decay_deadline_init(decay_t *decay) {
+	nstime_copy(&decay->deadline, &decay->epoch);
+	nstime_add(&decay->deadline, &decay->interval);
+	if (decay_ms_read(decay) > 0) {
+		nstime_t jitter;
+
+		nstime_init(&jitter, prng_range_u64(&decay->jitter_state,
+		    nstime_ns(&decay->interval)));
+		nstime_add(&decay->deadline, &jitter);
+	}
+}
+
+void
+decay_reinit(decay_t *decay, nstime_t *cur_time, ssize_t decay_ms) {
+	atomic_store_zd(&decay->time_ms, decay_ms, ATOMIC_RELAXED);
+	if (decay_ms > 0) {
+		nstime_init(&decay->interval, (uint64_t)decay_ms *
+		    KQU(1000000));
+		nstime_idivide(&decay->interval, SMOOTHSTEP_NSTEPS);
+	}
+
+	nstime_copy(&decay->epoch, cur_time);
+	decay->jitter_state = (uint64_t)(uintptr_t)decay;
+	decay_deadline_init(decay);
+	decay->nunpurged = 0;
+	memset(decay->backlog, 0, SMOOTHSTEP_NSTEPS * sizeof(size_t));
+}
+
+bool
+decay_init(decay_t *decay, nstime_t *cur_time, ssize_t decay_ms) {
+	if (config_debug) {
+		for (size_t i = 0; i < sizeof(decay_t); i++) {
+			assert(((char *)decay)[i] == 0);
+		}
+		decay->ceil_npages = 0;
+	}
+	if (malloc_mutex_init(&decay->mtx, "decay", WITNESS_RANK_DECAY,
+	    malloc_mutex_rank_exclusive)) {
+		return true;
+	}
+	decay->purging = false;
+	decay_reinit(decay, cur_time, decay_ms);
+	return false;
+}
+
+bool
+decay_ms_valid(ssize_t decay_ms) {
+	if (decay_ms < -1) {
+		return false;
+	}
+	if (decay_ms == -1 || (uint64_t)decay_ms <= NSTIME_SEC_MAX *
+	    KQU(1000)) {
+		return true;
+	}
+	return false;
+}
+
+static void
+decay_maybe_update_time(decay_t *decay, nstime_t *new_time) {
+	if (unlikely(!nstime_monotonic() && nstime_compare(&decay->epoch,
+	    new_time) > 0)) {
+		/*
+		 * Time went backwards.  Move the epoch back in time and
+		 * generate a new deadline, with the expectation that time
+		 * typically flows forward for long enough periods of time that
+		 * epochs complete.  Unfortunately, this strategy is susceptible
+		 * to clock jitter triggering premature epoch advances, but
+		 * clock jitter estimation and compensation isn't feasible here
+		 * because calls into this code are event-driven.
+		 */
+		nstime_copy(&decay->epoch, new_time);
+		decay_deadline_init(decay);
+	} else {
+		/* Verify that time does not go backwards. */
+		assert(nstime_compare(&decay->epoch, new_time) <= 0);
+	}
+}
+
+static size_t
+decay_backlog_npages_limit(const decay_t *decay) {
+	/*
+	 * For each element of decay_backlog, multiply by the corresponding
+	 * fixed-point smoothstep decay factor.  Sum the products, then divide
+	 * to round down to the nearest whole number of pages.
+	 */
+	uint64_t sum = 0;
+	for (unsigned i = 0; i < SMOOTHSTEP_NSTEPS; i++) {
+		sum += decay->backlog[i] * h_steps[i];
+	}
+	size_t npages_limit_backlog = (size_t)(sum >> SMOOTHSTEP_BFP);
+
+	return npages_limit_backlog;
+}
+
+/*
+ * Update backlog, assuming that 'nadvance_u64' time intervals have passed.
+ * Trailing 'nadvance_u64' records should be erased and 'current_npages' is
+ * placed as the newest record.
+ */
+static void
+decay_backlog_update(decay_t *decay, uint64_t nadvance_u64,
+    size_t current_npages) {
+	if (nadvance_u64 >= SMOOTHSTEP_NSTEPS) {
+		memset(decay->backlog, 0, (SMOOTHSTEP_NSTEPS-1) *
+		    sizeof(size_t));
+	} else {
+		size_t nadvance_z = (size_t)nadvance_u64;
+
+		assert((uint64_t)nadvance_z == nadvance_u64);
+
+		memmove(decay->backlog, &decay->backlog[nadvance_z],
+		    (SMOOTHSTEP_NSTEPS - nadvance_z) * sizeof(size_t));
+		if (nadvance_z > 1) {
+			memset(&decay->backlog[SMOOTHSTEP_NSTEPS -
+			    nadvance_z], 0, (nadvance_z-1) * sizeof(size_t));
+		}
+	}
+
+	size_t npages_delta = (current_npages > decay->nunpurged) ?
+	    current_npages - decay->nunpurged : 0;
+	decay->backlog[SMOOTHSTEP_NSTEPS-1] = npages_delta;
+
+	if (config_debug) {
+		if (current_npages > decay->ceil_npages) {
+			decay->ceil_npages = current_npages;
+		}
+		size_t npages_limit = decay_backlog_npages_limit(decay);
+		assert(decay->ceil_npages >= npages_limit);
+		if (decay->ceil_npages > npages_limit) {
+			decay->ceil_npages = npages_limit;
+		}
+	}
+}
+
+static inline bool
+decay_deadline_reached(const decay_t *decay, const nstime_t *time) {
+	return (nstime_compare(&decay->deadline, time) <= 0);
+}
+
+uint64_t
+decay_npages_purge_in(decay_t *decay, nstime_t *time, size_t npages_new) {
+	uint64_t decay_interval_ns = decay_epoch_duration_ns(decay);
+	size_t n_epoch = (size_t)(nstime_ns(time) / decay_interval_ns);
+
+	uint64_t npages_purge;
+	if (n_epoch >= SMOOTHSTEP_NSTEPS) {
+		npages_purge = npages_new;
+	} else {
+		uint64_t h_steps_max = h_steps[SMOOTHSTEP_NSTEPS - 1];
+		assert(h_steps_max >=
+		    h_steps[SMOOTHSTEP_NSTEPS - 1 - n_epoch]);
+		npages_purge = npages_new * (h_steps_max -
+		    h_steps[SMOOTHSTEP_NSTEPS - 1 - n_epoch]);
+		npages_purge >>= SMOOTHSTEP_BFP;
+	}
+	return npages_purge;
+}
+
+bool
+decay_maybe_advance_epoch(decay_t *decay, nstime_t *new_time,
+    size_t npages_current) {
+	/* Handle possible non-monotonicity of time. */
+	decay_maybe_update_time(decay, new_time);
+
+	if (!decay_deadline_reached(decay, new_time)) {
+		return false;
+	}
+	nstime_t delta;
+	nstime_copy(&delta, new_time);
+	nstime_subtract(&delta, &decay->epoch);
+
+	uint64_t nadvance_u64 = nstime_divide(&delta, &decay->interval);
+	assert(nadvance_u64 > 0);
+
+	/* Add nadvance_u64 decay intervals to epoch. */
+	nstime_copy(&delta, &decay->interval);
+	nstime_imultiply(&delta, nadvance_u64);
+	nstime_add(&decay->epoch, &delta);
+
+	/* Set a new deadline. */
+	decay_deadline_init(decay);
+
+	/* Update the backlog. */
+	decay_backlog_update(decay, nadvance_u64, npages_current);
+
+	decay->npages_limit = decay_backlog_npages_limit(decay);
+	decay->nunpurged = (decay->npages_limit > npages_current) ?
+	    decay->npages_limit : npages_current;
+
+	return true;
+}
+
+/*
+ * Calculate how many pages should be purged after 'interval'.
+ *
+ * First, calculate how many pages should remain at the moment, then subtract
+ * the number of pages that should remain after 'interval'. The difference is
+ * how many pages should be purged until then.
+ *
+ * The number of pages that should remain at a specific moment is calculated
+ * like this: pages(now) = sum(backlog[i] * h_steps[i]). After 'interval'
+ * passes, backlog would shift 'interval' positions to the left and sigmoid
+ * curve would be applied starting with backlog[interval].
+ *
+ * The implementation doesn't directly map to the description, but it's
+ * essentially the same calculation, optimized to avoid iterating over
+ * [interval..SMOOTHSTEP_NSTEPS) twice.
+ */
+static inline size_t
+decay_npurge_after_interval(decay_t *decay, size_t interval) {
+	size_t i;
+	uint64_t sum = 0;
+	for (i = 0; i < interval; i++) {
+		sum += decay->backlog[i] * h_steps[i];
+	}
+	for (; i < SMOOTHSTEP_NSTEPS; i++) {
+		sum += decay->backlog[i] *
+		    (h_steps[i] - h_steps[i - interval]);
+	}
+
+	return (size_t)(sum >> SMOOTHSTEP_BFP);
+}
+
+uint64_t decay_ns_until_purge(decay_t *decay, size_t npages_current,
+    uint64_t npages_threshold) {
+	if (!decay_gradually(decay)) {
+		return DECAY_UNBOUNDED_TIME_TO_PURGE;
+	}
+	uint64_t decay_interval_ns = decay_epoch_duration_ns(decay);
+	assert(decay_interval_ns > 0);
+	if (npages_current == 0) {
+		unsigned i;
+		for (i = 0; i < SMOOTHSTEP_NSTEPS; i++) {
+			if (decay->backlog[i] > 0) {
+				break;
+			}
+		}
+		if (i == SMOOTHSTEP_NSTEPS) {
+			/* No dirty pages recorded.  Sleep indefinitely. */
+			return DECAY_UNBOUNDED_TIME_TO_PURGE;
+		}
+	}
+	if (npages_current <= npages_threshold) {
+		/* Use max interval. */
+		return decay_interval_ns * SMOOTHSTEP_NSTEPS;
+	}
+
+	/* Minimal 2 intervals to ensure reaching next epoch deadline. */
+	size_t lb = 2;
+	size_t ub = SMOOTHSTEP_NSTEPS;
+
+	size_t npurge_lb, npurge_ub;
+	npurge_lb = decay_npurge_after_interval(decay, lb);
+	if (npurge_lb > npages_threshold) {
+		return decay_interval_ns * lb;
+	}
+	npurge_ub = decay_npurge_after_interval(decay, ub);
+	if (npurge_ub < npages_threshold) {
+		return decay_interval_ns * ub;
+	}
+
+	unsigned n_search = 0;
+	size_t target, npurge;
+	while ((npurge_lb + npages_threshold < npurge_ub) && (lb + 2 < ub)) {
+		target = (lb + ub) / 2;
+		npurge = decay_npurge_after_interval(decay, target);
+		if (npurge > npages_threshold) {
+			ub = target;
+			npurge_ub = npurge;
+		} else {
+			lb = target;
+			npurge_lb = npurge;
+		}
+		assert(n_search < lg_floor(SMOOTHSTEP_NSTEPS) + 1);
+		++n_search;
+	}
+	return decay_interval_ns * (ub + lb) / 2;
+}
diff --git a/deps/jemalloc/src/div.c b/deps/jemalloc/src/div.c
new file mode 100644
index 0000000..808892a
--- /dev/null
+++ b/deps/jemalloc/src/div.c
@@ -0,0 +1,55 @@
+#include "jemalloc/internal/jemalloc_preamble.h"
+
+#include "jemalloc/internal/div.h"
+
+#include "jemalloc/internal/assert.h"
+
+/*
+ * Suppose we have n = q * d, all integers. We know n and d, and want q = n / d.
+ *
+ * For any k, we have (here, all division is exact; not C-style rounding):
+ * floor(ceil(2^k / d) * n / 2^k) = floor((2^k + r) / d * n / 2^k), where
+ * r = (-2^k) mod d.
+ *
+ * Expanding this out:
+ * ... = floor(2^k / d * n / 2^k + r / d * n / 2^k)
+ *     = floor(n / d + (r / d) * (n / 2^k)).
+ *
+ * The fractional part of n / d is 0 (because of the assumption that d divides n
+ * exactly), so we have:
+ * ... = n / d + floor((r / d) * (n / 2^k))
+ *
+ * So that our initial expression is equal to the quantity we seek, so long as
+ * (r / d) * (n / 2^k) < 1.
+ *
+ * r is a remainder mod d, so r < d and r / d < 1 always. We can make
+ * n / 2 ^ k < 1 by setting k = 32. This gets us a value of magic that works.
+ */
+
+void
+div_init(div_info_t *div_info, size_t d) {
+	/* Nonsensical. */
+	assert(d != 0);
+	/*
+	 * This would make the value of magic too high to fit into a uint32_t
+	 * (we would want magic = 2^32 exactly). This would mess with code gen
+	 * on 32-bit machines.
+	 */
+	assert(d != 1);
+
+	uint64_t two_to_k = ((uint64_t)1 << 32);
+	uint32_t magic = (uint32_t)(two_to_k / d);
+
+	/*
+	 * We want magic = ceil(2^k / d), but C gives us floor. We have to
+	 * increment it unless the result was exact (i.e. unless d is a power of
+	 * two).
+	 */
+	if (two_to_k % d != 0) {
+		magic++;
+	}
+	div_info->magic = magic;
+#ifdef JEMALLOC_DEBUG
+	div_info->d = d;
+#endif
+}
diff --git a/deps/jemalloc/src/ecache.c b/deps/jemalloc/src/ecache.c
new file mode 100644
index 0000000..a242227
--- /dev/null
+++ b/deps/jemalloc/src/ecache.c
@@ -0,0 +1,35 @@
+#include "jemalloc/internal/jemalloc_preamble.h"
+#include "jemalloc/internal/jemalloc_internal_includes.h"
+
+#include "jemalloc/internal/san.h"
+
+bool
+ecache_init(tsdn_t *tsdn, ecache_t *ecache, extent_state_t state, unsigned ind,
+    bool delay_coalesce) {
+	if (malloc_mutex_init(&ecache->mtx, "extents", WITNESS_RANK_EXTENTS,
+	    malloc_mutex_rank_exclusive)) {
+		return true;
+	}
+	ecache->state = state;
+	ecache->ind = ind;
+	ecache->delay_coalesce = delay_coalesce;
+	eset_init(&ecache->eset, state);
+	eset_init(&ecache->guarded_eset, state);
+
+	return false;
+}
+
+void
+ecache_prefork(tsdn_t *tsdn, ecache_t *ecache) {
+	malloc_mutex_prefork(tsdn, &ecache->mtx);
+}
+
+void
+ecache_postfork_parent(tsdn_t *tsdn, ecache_t *ecache) {
+	malloc_mutex_postfork_parent(tsdn, &ecache->mtx);
+}
+
+void
+ecache_postfork_child(tsdn_t *tsdn, ecache_t *ecache) {
+	malloc_mutex_postfork_child(tsdn, &ecache->mtx);
+}
diff --git a/deps/jemalloc/src/edata.c b/deps/jemalloc/src/edata.c
new file mode 100644
index 0000000..82b6f56
--- /dev/null
+++ b/deps/jemalloc/src/edata.c
@@ -0,0 +1,6 @@
+#include "jemalloc/internal/jemalloc_preamble.h"
+#include "jemalloc/internal/jemalloc_internal_includes.h"
+
+ph_gen(, edata_avail, edata_t, avail_link,
+    edata_esnead_comp)
+ph_gen(, edata_heap, edata_t, heap_link, edata_snad_comp)
diff --git a/deps/jemalloc/src/edata_cache.c b/deps/jemalloc/src/edata_cache.c
new file mode 100644
index 0000000..6bc1848
--- /dev/null
+++ b/deps/jemalloc/src/edata_cache.c
@@ -0,0 +1,154 @@
+#include "jemalloc/internal/jemalloc_preamble.h"
+#include "jemalloc/internal/jemalloc_internal_includes.h"
+
+bool
+edata_cache_init(edata_cache_t *edata_cache, base_t *base) {
+	edata_avail_new(&edata_cache->avail);
+	/*
+	 * This is not strictly necessary, since the edata_cache_t is only
+	 * created inside an arena, which is zeroed on creation.  But this is
+	 * handy as a safety measure.
+	 */
+	atomic_store_zu(&edata_cache->count, 0, ATOMIC_RELAXED);
+	if (malloc_mutex_init(&edata_cache->mtx, "edata_cache",
+	    WITNESS_RANK_EDATA_CACHE, malloc_mutex_rank_exclusive)) {
+		return true;
+	}
+	edata_cache->base = base;
+	return false;
+}
+
+edata_t *
+edata_cache_get(tsdn_t *tsdn, edata_cache_t *edata_cache) {
+	malloc_mutex_lock(tsdn, &edata_cache->mtx);
+	edata_t *edata = edata_avail_first(&edata_cache->avail);
+	if (edata == NULL) {
+		malloc_mutex_unlock(tsdn, &edata_cache->mtx);
+		return base_alloc_edata(tsdn, edata_cache->base);
+	}
+	edata_avail_remove(&edata_cache->avail, edata);
+	atomic_load_sub_store_zu(&edata_cache->count, 1);
+	malloc_mutex_unlock(tsdn, &edata_cache->mtx);
+	return edata;
+}
+
+void
+edata_cache_put(tsdn_t *tsdn, edata_cache_t *edata_cache, edata_t *edata) {
+	malloc_mutex_lock(tsdn, &edata_cache->mtx);
+	edata_avail_insert(&edata_cache->avail, edata);
+	atomic_load_add_store_zu(&edata_cache->count, 1);
+	malloc_mutex_unlock(tsdn, &edata_cache->mtx);
+}
+
+void
+edata_cache_prefork(tsdn_t *tsdn, edata_cache_t *edata_cache) {
+	malloc_mutex_prefork(tsdn, &edata_cache->mtx);
+}
+
+void
+edata_cache_postfork_parent(tsdn_t *tsdn, edata_cache_t *edata_cache) {
+	malloc_mutex_postfork_parent(tsdn, &edata_cache->mtx);
+}
+
+void
+edata_cache_postfork_child(tsdn_t *tsdn, edata_cache_t *edata_cache) {
+	malloc_mutex_postfork_child(tsdn, &edata_cache->mtx);
+}
+
+void
+edata_cache_fast_init(edata_cache_fast_t *ecs, edata_cache_t *fallback) {
+	edata_list_inactive_init(&ecs->list);
+	ecs->fallback = fallback;
+	ecs->disabled = false;
+}
+
+static void
+edata_cache_fast_try_fill_from_fallback(tsdn_t *tsdn,
+    edata_cache_fast_t *ecs) {
+	edata_t *edata;
+	malloc_mutex_lock(tsdn, &ecs->fallback->mtx);
+	for (int i = 0; i < EDATA_CACHE_FAST_FILL; i++) {
+		edata = edata_avail_remove_first(&ecs->fallback->avail);
+		if (edata == NULL) {
+			break;
+		}
+		edata_list_inactive_append(&ecs->list, edata);
+		atomic_load_sub_store_zu(&ecs->fallback->count, 1);
+	}
+	malloc_mutex_unlock(tsdn, &ecs->fallback->mtx);
+}
+
+edata_t *
+edata_cache_fast_get(tsdn_t *tsdn, edata_cache_fast_t *ecs) {
+	witness_assert_depth_to_rank(tsdn_witness_tsdp_get(tsdn),
+	    WITNESS_RANK_EDATA_CACHE, 0);
+
+	if (ecs->disabled) {
+		assert(edata_list_inactive_first(&ecs->list) == NULL);
+		return edata_cache_get(tsdn, ecs->fallback);
+	}
+
+	edata_t *edata = edata_list_inactive_first(&ecs->list);
+	if (edata != NULL) {
+		edata_list_inactive_remove(&ecs->list, edata);
+		return edata;
+	}
+	/* Slow path; requires synchronization. */
+	edata_cache_fast_try_fill_from_fallback(tsdn, ecs);
+	edata = edata_list_inactive_first(&ecs->list);
+	if (edata != NULL) {
+		edata_list_inactive_remove(&ecs->list, edata);
+	} else {
+		/*
+		 * Slowest path (fallback was also empty); allocate something
+		 * new.
+		 */
+		edata = base_alloc_edata(tsdn, ecs->fallback->base);
+	}
+	return edata;
+}
+
+static void
+edata_cache_fast_flush_all(tsdn_t *tsdn, edata_cache_fast_t *ecs) {
+	/*
+	 * You could imagine smarter cache management policies (like
+	 * only flushing down to some threshold in anticipation of
+	 * future get requests).  But just flushing everything provides
+	 * a good opportunity to defrag too, and lets us share code between the
+	 * flush and disable pathways.
+	 */
+	edata_t *edata;
+	size_t nflushed = 0;
+	malloc_mutex_lock(tsdn, &ecs->fallback->mtx);
+	while ((edata = edata_list_inactive_first(&ecs->list)) != NULL) {
+		edata_list_inactive_remove(&ecs->list, edata);
+		edata_avail_insert(&ecs->fallback->avail, edata);
+		nflushed++;
+	}
+	atomic_load_add_store_zu(&ecs->fallback->count, nflushed);
+	malloc_mutex_unlock(tsdn, &ecs->fallback->mtx);
+}
+
+void
+edata_cache_fast_put(tsdn_t *tsdn, edata_cache_fast_t *ecs, edata_t *edata) {
+	witness_assert_depth_to_rank(tsdn_witness_tsdp_get(tsdn),
+	    WITNESS_RANK_EDATA_CACHE, 0);
+
+	if (ecs->disabled) {
+		assert(edata_list_inactive_first(&ecs->list) == NULL);
+		edata_cache_put(tsdn, ecs->fallback, edata);
+		return;
+	}
+
+	/*
+	 * Prepend rather than append, to do LIFO ordering in the hopes of some
+	 * cache locality.
+	 */
+	edata_list_inactive_prepend(&ecs->list, edata);
+}
+
+void
+edata_cache_fast_disable(tsdn_t *tsdn, edata_cache_fast_t *ecs) {
+	edata_cache_fast_flush_all(tsdn, ecs);
+	ecs->disabled = true;
+}
diff --git a/deps/jemalloc/src/ehooks.c b/deps/jemalloc/src/ehooks.c
new file mode 100644
index 0000000..383e9de
--- /dev/null
+++ b/deps/jemalloc/src/ehooks.c
@@ -0,0 +1,275 @@
+#include "jemalloc/internal/jemalloc_preamble.h"
+#include "jemalloc/internal/jemalloc_internal_includes.h"
+
+#include "jemalloc/internal/ehooks.h"
+#include "jemalloc/internal/extent_mmap.h"
+
+void
+ehooks_init(ehooks_t *ehooks, extent_hooks_t *extent_hooks, unsigned ind) {
+	/* All other hooks are optional; this one is not. */
+	assert(extent_hooks->alloc != NULL);
+	ehooks->ind = ind;
+	ehooks_set_extent_hooks_ptr(ehooks, extent_hooks);
+}
+
+/*
+ * If the caller specifies (!*zero), it is still possible to receive zeroed
+ * memory, in which case *zero is toggled to true.  arena_extent_alloc() takes
+ * advantage of this to avoid demanding zeroed extents, but taking advantage of
+ * them if they are returned.
+ */
+static void *
+extent_alloc_core(tsdn_t *tsdn, arena_t *arena, void *new_addr, size_t size,
+    size_t alignment, bool *zero, bool *commit, dss_prec_t dss_prec) {
+	void *ret;
+
+	assert(size != 0);
+	assert(alignment != 0);
+
+	/* "primary" dss. */
+	if (have_dss && dss_prec == dss_prec_primary && (ret =
+	    extent_alloc_dss(tsdn, arena, new_addr, size, alignment, zero,
+	    commit)) != NULL) {
+		return ret;
+	}
+	/* mmap. */
+	if ((ret = extent_alloc_mmap(new_addr, size, alignment, zero, commit))
+	    != NULL) {
+		return ret;
+	}
+	/* "secondary" dss. */
+	if (have_dss && dss_prec == dss_prec_secondary && (ret =
+	    extent_alloc_dss(tsdn, arena, new_addr, size, alignment, zero,
+	    commit)) != NULL) {
+		return ret;
+	}
+
+	/* All strategies for allocation failed. */
+	return NULL;
+}
+
+void *
+ehooks_default_alloc_impl(tsdn_t *tsdn, void *new_addr, size_t size,
+    size_t alignment, bool *zero, bool *commit, unsigned arena_ind) {
+	arena_t *arena = arena_get(tsdn, arena_ind, false);
+	/* NULL arena indicates arena_create. */
+	assert(arena != NULL || alignment == HUGEPAGE);
+	dss_prec_t dss = (arena == NULL) ? dss_prec_disabled :
+	    (dss_prec_t)atomic_load_u(&arena->dss_prec, ATOMIC_RELAXED);
+	void *ret = extent_alloc_core(tsdn, arena, new_addr, size, alignment,
+	    zero, commit, dss);
+	if (have_madvise_huge && ret) {
+		pages_set_thp_state(ret, size);
+	}
+	return ret;
+}
+
+static void *
+ehooks_default_alloc(extent_hooks_t *extent_hooks, void *new_addr, size_t size,
+    size_t alignment, bool *zero, bool *commit, unsigned arena_ind) {
+	return ehooks_default_alloc_impl(tsdn_fetch(), new_addr, size,
+	    ALIGNMENT_CEILING(alignment, PAGE), zero, commit, arena_ind);
+}
+
+bool
+ehooks_default_dalloc_impl(void *addr, size_t size) {
+	if (!have_dss || !extent_in_dss(addr)) {
+		return extent_dalloc_mmap(addr, size);
+	}
+	return true;
+}
+
+static bool
+ehooks_default_dalloc(extent_hooks_t *extent_hooks, void *addr, size_t size,
+    bool committed, unsigned arena_ind) {
+	return ehooks_default_dalloc_impl(addr, size);
+}
+
+void
+ehooks_default_destroy_impl(void *addr, size_t size) {
+	if (!have_dss || !extent_in_dss(addr)) {
+		pages_unmap(addr, size);
+	}
+}
+
+static void
+ehooks_default_destroy(extent_hooks_t *extent_hooks, void *addr, size_t size,
+    bool committed, unsigned arena_ind) {
+	ehooks_default_destroy_impl(addr, size);
+}
+
+bool
+ehooks_default_commit_impl(void *addr, size_t offset, size_t length) {
+	return pages_commit((void *)((uintptr_t)addr + (uintptr_t)offset),
+	    length);
+}
+
+static bool
+ehooks_default_commit(extent_hooks_t *extent_hooks, void *addr, size_t size,
+    size_t offset, size_t length, unsigned arena_ind) {
+	return ehooks_default_commit_impl(addr, offset, length);
+}
+
+bool
+ehooks_default_decommit_impl(void *addr, size_t offset, size_t length) {
+	return pages_decommit((void *)((uintptr_t)addr + (uintptr_t)offset),
+	    length);
+}
+
+static bool
+ehooks_default_decommit(extent_hooks_t *extent_hooks, void *addr, size_t size,
+    size_t offset, size_t length, unsigned arena_ind) {
+	return ehooks_default_decommit_impl(addr, offset, length);
+}
+
+#ifdef PAGES_CAN_PURGE_LAZY
+bool
+ehooks_default_purge_lazy_impl(void *addr, size_t offset, size_t length) {
+	return pages_purge_lazy((void *)((uintptr_t)addr + (uintptr_t)offset),
+	    length);
+}
+
+static bool
+ehooks_default_purge_lazy(extent_hooks_t *extent_hooks, void *addr, size_t size,
+    size_t offset, size_t length, unsigned arena_ind) {
+	assert(addr != NULL);
+	assert((offset & PAGE_MASK) == 0);
+	assert(length != 0);
+	assert((length & PAGE_MASK) == 0);
+	return ehooks_default_purge_lazy_impl(addr, offset, length);
+}
+#endif
+
+#ifdef PAGES_CAN_PURGE_FORCED
+bool
+ehooks_default_purge_forced_impl(void *addr, size_t offset, size_t length) {
+	return pages_purge_forced((void *)((uintptr_t)addr +
+	    (uintptr_t)offset), length);
+}
+
+static bool
+ehooks_default_purge_forced(extent_hooks_t *extent_hooks, void *addr,
+    size_t size, size_t offset, size_t length, unsigned arena_ind) {
+	assert(addr != NULL);
+	assert((offset & PAGE_MASK) == 0);
+	assert(length != 0);
+	assert((length & PAGE_MASK) == 0);
+	return ehooks_default_purge_forced_impl(addr, offset, length);
+}
+#endif
+
+bool
+ehooks_default_split_impl() {
+	if (!maps_coalesce) {
+		/*
+		 * Without retain, only whole regions can be purged (required by
+		 * MEM_RELEASE on Windows) -- therefore disallow splitting.  See
+		 * comments in extent_head_no_merge().
+		 */
+		return !opt_retain;
+	}
+
+	return false;
+}
+
+static bool
+ehooks_default_split(extent_hooks_t *extent_hooks, void *addr, size_t size,
+    size_t size_a, size_t size_b, bool committed, unsigned arena_ind) {
+	return ehooks_default_split_impl();
+}
+
+bool
+ehooks_default_merge_impl(tsdn_t *tsdn, void *addr_a, void *addr_b) {
+	assert(addr_a < addr_b);
+	/*
+	 * For non-DSS cases --
+	 * a) W/o maps_coalesce, merge is not always allowed (Windows):
+	 *   1) w/o retain, never merge (first branch below).
+	 *   2) with retain, only merge extents from the same VirtualAlloc
+	 *      region (in which case MEM_DECOMMIT is utilized for purging).
+	 *
+	 * b) With maps_coalesce, it's always possible to merge.
+	 *   1) w/o retain, always allow merge (only about dirty / muzzy).
+	 *   2) with retain, to preserve the SN / first-fit, merge is still
+	 *      disallowed if b is a head extent, i.e. no merging across
+	 *      different mmap regions.
+	 *
+	 * a2) and b2) are implemented in emap_try_acquire_edata_neighbor, and
+	 * sanity checked in the second branch below.
+	 */
+	if (!maps_coalesce && !opt_retain) {
+		return true;
+	}
+	if (config_debug) {
+		edata_t *a = emap_edata_lookup(tsdn, &arena_emap_global,
+		    addr_a);
+		bool head_a = edata_is_head_get(a);
+		edata_t *b = emap_edata_lookup(tsdn, &arena_emap_global,
+		    addr_b);
+		bool head_b = edata_is_head_get(b);
+		emap_assert_mapped(tsdn, &arena_emap_global, a);
+		emap_assert_mapped(tsdn, &arena_emap_global, b);
+		assert(extent_neighbor_head_state_mergeable(head_a, head_b,
+		    /* forward */ true));
+	}
+	if (have_dss && !extent_dss_mergeable(addr_a, addr_b)) {
+		return true;
+	}
+
+	return false;
+}
+
+bool
+ehooks_default_merge(extent_hooks_t *extent_hooks, void *addr_a, size_t size_a,
+    void *addr_b, size_t size_b, bool committed, unsigned arena_ind) {
+	tsdn_t *tsdn = tsdn_fetch();
+
+	return ehooks_default_merge_impl(tsdn, addr_a, addr_b);
+}
+
+void
+ehooks_default_zero_impl(void *addr, size_t size) {
+	/*
+	 * By default, we try to zero out memory using OS-provided demand-zeroed
+	 * pages.  If the user has specifically requested hugepages, though, we
+	 * don't want to purge in the middle of a hugepage (which would break it
+	 * up), so we act conservatively and use memset.
+	 */
+	bool needs_memset = true;
+	if (opt_thp != thp_mode_always) {
+		needs_memset = pages_purge_forced(addr, size);
+	}
+	if (needs_memset) {
+		memset(addr, 0, size);
+	}
+}
+
+void
+ehooks_default_guard_impl(void *guard1, void *guard2) {
+	pages_mark_guards(guard1, guard2);
+}
+
+void
+ehooks_default_unguard_impl(void *guard1, void *guard2) {
+	pages_unmark_guards(guard1, guard2);
+}
+
+const extent_hooks_t ehooks_default_extent_hooks = {
+	ehooks_default_alloc,
+	ehooks_default_dalloc,
+	ehooks_default_destroy,
+	ehooks_default_commit,
+	ehooks_default_decommit,
+#ifdef PAGES_CAN_PURGE_LAZY
+	ehooks_default_purge_lazy,
+#else
+	NULL,
+#endif
+#ifdef PAGES_CAN_PURGE_FORCED
+	ehooks_default_purge_forced,
+#else
+	NULL,
+#endif
+	ehooks_default_split,
+	ehooks_default_merge
+};
diff --git a/deps/jemalloc/src/emap.c b/deps/jemalloc/src/emap.c
new file mode 100644
index 0000000..9cc95a7
--- /dev/null
+++ b/deps/jemalloc/src/emap.c
@@ -0,0 +1,386 @@
+#include "jemalloc/internal/jemalloc_preamble.h"
+#include "jemalloc/internal/jemalloc_internal_includes.h"
+
+#include "jemalloc/internal/emap.h"
+
+enum emap_lock_result_e {
+	emap_lock_result_success,
+	emap_lock_result_failure,
+	emap_lock_result_no_extent
+};
+typedef enum emap_lock_result_e emap_lock_result_t;
+
+bool
+emap_init(emap_t *emap, base_t *base, bool zeroed) {
+	return rtree_new(&emap->rtree, base, zeroed);
+}
+
+void
+emap_update_edata_state(tsdn_t *tsdn, emap_t *emap, edata_t *edata,
+    extent_state_t state) {
+	witness_assert_positive_depth_to_rank(tsdn_witness_tsdp_get(tsdn),
+	    WITNESS_RANK_CORE);
+
+	edata_state_set(edata, state);
+
+	EMAP_DECLARE_RTREE_CTX;
+	rtree_leaf_elm_t *elm1 = rtree_leaf_elm_lookup(tsdn, &emap->rtree,
+	    rtree_ctx, (uintptr_t)edata_base_get(edata), /* dependent */ true,
+	    /* init_missing */ false);
+	assert(elm1 != NULL);
+	rtree_leaf_elm_t *elm2 = edata_size_get(edata) == PAGE ? NULL :
+	    rtree_leaf_elm_lookup(tsdn, &emap->rtree, rtree_ctx,
+	    (uintptr_t)edata_last_get(edata), /* dependent */ true,
+	    /* init_missing */ false);
+
+	rtree_leaf_elm_state_update(tsdn, &emap->rtree, elm1, elm2, state);
+
+	emap_assert_mapped(tsdn, emap, edata);
+}
+
+static inline edata_t *
+emap_try_acquire_edata_neighbor_impl(tsdn_t *tsdn, emap_t *emap, edata_t *edata,
+    extent_pai_t pai, extent_state_t expected_state, bool forward,
+    bool expanding) {
+	witness_assert_positive_depth_to_rank(tsdn_witness_tsdp_get(tsdn),
+	    WITNESS_RANK_CORE);
+	assert(!edata_guarded_get(edata));
+	assert(!expanding || forward);
+	assert(!edata_state_in_transition(expected_state));
+	assert(expected_state == extent_state_dirty ||
+	       expected_state == extent_state_muzzy ||
+	       expected_state == extent_state_retained);
+
+	void *neighbor_addr = forward ? edata_past_get(edata) :
+	    edata_before_get(edata);
+	/*
+	 * This is subtle; the rtree code asserts that its input pointer is
+	 * non-NULL, and this is a useful thing to check.  But it's possible
+	 * that edata corresponds to an address of (void *)PAGE (in practice,
+	 * this has only been observed on FreeBSD when address-space
+	 * randomization is on, but it could in principle happen anywhere).  In
+	 * this case, edata_before_get(edata) is NULL, triggering the assert.
+	 */
+	if (neighbor_addr == NULL) {
+		return NULL;
+	}
+
+	EMAP_DECLARE_RTREE_CTX;
+	rtree_leaf_elm_t *elm = rtree_leaf_elm_lookup(tsdn, &emap->rtree,
+	    rtree_ctx, (uintptr_t)neighbor_addr, /* dependent*/ false,
+	    /* init_missing */ false);
+	if (elm == NULL) {
+		return NULL;
+	}
+
+	rtree_contents_t neighbor_contents = rtree_leaf_elm_read(tsdn,
+	    &emap->rtree, elm, /* dependent */ true);
+	if (!extent_can_acquire_neighbor(edata, neighbor_contents, pai,
+	    expected_state, forward, expanding)) {
+		return NULL;
+	}
+
+	/* From this point, the neighbor edata can be safely acquired. */
+	edata_t *neighbor = neighbor_contents.edata;
+	assert(edata_state_get(neighbor) == expected_state);
+	emap_update_edata_state(tsdn, emap, neighbor, extent_state_merging);
+	if (expanding) {
+		extent_assert_can_expand(edata, neighbor);
+	} else {
+		extent_assert_can_coalesce(edata, neighbor);
+	}
+
+	return neighbor;
+}
+
+edata_t *
+emap_try_acquire_edata_neighbor(tsdn_t *tsdn, emap_t *emap, edata_t *edata,
+    extent_pai_t pai, extent_state_t expected_state, bool forward) {
+	return emap_try_acquire_edata_neighbor_impl(tsdn, emap, edata, pai,
+	    expected_state, forward, /* expand */ false);
+}
+
+edata_t *
+emap_try_acquire_edata_neighbor_expand(tsdn_t *tsdn, emap_t *emap,
+    edata_t *edata, extent_pai_t pai, extent_state_t expected_state) {
+	/* Try expanding forward. */
+	return emap_try_acquire_edata_neighbor_impl(tsdn, emap, edata, pai,
+	    expected_state, /* forward */ true, /* expand */ true);
+}
+
+void
+emap_release_edata(tsdn_t *tsdn, emap_t *emap, edata_t *edata,
+    extent_state_t new_state) {
+	assert(emap_edata_in_transition(tsdn, emap, edata));
+	assert(emap_edata_is_acquired(tsdn, emap, edata));
+
+	emap_update_edata_state(tsdn, emap, edata, new_state);
+}
+
+static bool
+emap_rtree_leaf_elms_lookup(tsdn_t *tsdn, emap_t *emap, rtree_ctx_t *rtree_ctx,
+    const edata_t *edata, bool dependent, bool init_missing,
+    rtree_leaf_elm_t **r_elm_a, rtree_leaf_elm_t **r_elm_b) {
+	*r_elm_a = rtree_leaf_elm_lookup(tsdn, &emap->rtree, rtree_ctx,
+	    (uintptr_t)edata_base_get(edata), dependent, init_missing);
+	if (!dependent && *r_elm_a == NULL) {
+		return true;
+	}
+	assert(*r_elm_a != NULL);
+
+	*r_elm_b = rtree_leaf_elm_lookup(tsdn, &emap->rtree, rtree_ctx,
+	    (uintptr_t)edata_last_get(edata), dependent, init_missing);
+	if (!dependent && *r_elm_b == NULL) {
+		return true;
+	}
+	assert(*r_elm_b != NULL);
+
+	return false;
+}
+
+static void
+emap_rtree_write_acquired(tsdn_t *tsdn, emap_t *emap, rtree_leaf_elm_t *elm_a,
+    rtree_leaf_elm_t *elm_b, edata_t *edata, szind_t szind, bool slab) {
+	rtree_contents_t contents;
+	contents.edata = edata;
+	contents.metadata.szind = szind;
+	contents.metadata.slab = slab;
+	contents.metadata.is_head = (edata == NULL) ? false :
+	    edata_is_head_get(edata);
+	contents.metadata.state = (edata == NULL) ? 0 : edata_state_get(edata);
+	rtree_leaf_elm_write(tsdn, &emap->rtree, elm_a, contents);
+	if (elm_b != NULL) {
+		rtree_leaf_elm_write(tsdn, &emap->rtree, elm_b, contents);
+	}
+}
+
+bool
+emap_register_boundary(tsdn_t *tsdn, emap_t *emap, edata_t *edata,
+    szind_t szind, bool slab) {
+	assert(edata_state_get(edata) == extent_state_active);
+	EMAP_DECLARE_RTREE_CTX;
+
+	rtree_leaf_elm_t *elm_a, *elm_b;
+	bool err = emap_rtree_leaf_elms_lookup(tsdn, emap, rtree_ctx, edata,
+	    false, true, &elm_a, &elm_b);
+	if (err) {
+		return true;
+	}
+	assert(rtree_leaf_elm_read(tsdn, &emap->rtree, elm_a,
+	    /* dependent */ false).edata == NULL);
+	assert(rtree_leaf_elm_read(tsdn, &emap->rtree, elm_b,
+	    /* dependent */ false).edata == NULL);
+	emap_rtree_write_acquired(tsdn, emap, elm_a, elm_b, edata, szind, slab);
+	return false;
+}
+
+/* Invoked *after* emap_register_boundary. */
+void
+emap_register_interior(tsdn_t *tsdn, emap_t *emap, edata_t *edata,
+    szind_t szind) {
+	EMAP_DECLARE_RTREE_CTX;
+
+	assert(edata_slab_get(edata));
+	assert(edata_state_get(edata) == extent_state_active);
+
+	if (config_debug) {
+		/* Making sure the boundary is registered already. */
+		rtree_leaf_elm_t *elm_a, *elm_b;
+		bool err = emap_rtree_leaf_elms_lookup(tsdn, emap, rtree_ctx,
+		    edata, /* dependent */ true, /* init_missing */ false,
+		    &elm_a, &elm_b);
+		assert(!err);
+		rtree_contents_t contents_a, contents_b;
+		contents_a = rtree_leaf_elm_read(tsdn, &emap->rtree, elm_a,
+		    /* dependent */ true);
+		contents_b = rtree_leaf_elm_read(tsdn, &emap->rtree, elm_b,
+		    /* dependent */ true);
+		assert(contents_a.edata == edata && contents_b.edata == edata);
+		assert(contents_a.metadata.slab && contents_b.metadata.slab);
+	}
+
+	rtree_contents_t contents;
+	contents.edata = edata;
+	contents.metadata.szind = szind;
+	contents.metadata.slab = true;
+	contents.metadata.state = extent_state_active;
+	contents.metadata.is_head = false; /* Not allowed to access. */
+
+	assert(edata_size_get(edata) > (2 << LG_PAGE));
+	rtree_write_range(tsdn, &emap->rtree, rtree_ctx,
+	    (uintptr_t)edata_base_get(edata) + PAGE,
+	    (uintptr_t)edata_last_get(edata) - PAGE, contents);
+}
+
+void
+emap_deregister_boundary(tsdn_t *tsdn, emap_t *emap, edata_t *edata) {
+	/*
+	 * The edata must be either in an acquired state, or protected by state
+	 * based locks.
+	 */
+	if (!emap_edata_is_acquired(tsdn, emap, edata)) {
+		witness_assert_positive_depth_to_rank(
+		    tsdn_witness_tsdp_get(tsdn), WITNESS_RANK_CORE);
+	}
+
+	EMAP_DECLARE_RTREE_CTX;
+	rtree_leaf_elm_t *elm_a, *elm_b;
+
+	emap_rtree_leaf_elms_lookup(tsdn, emap, rtree_ctx, edata,
+	    true, false, &elm_a, &elm_b);
+	emap_rtree_write_acquired(tsdn, emap, elm_a, elm_b, NULL, SC_NSIZES,
+	    false);
+}
+
+void
+emap_deregister_interior(tsdn_t *tsdn, emap_t *emap, edata_t *edata) {
+	EMAP_DECLARE_RTREE_CTX;
+
+	assert(edata_slab_get(edata));
+	if (edata_size_get(edata) > (2 << LG_PAGE)) {
+		rtree_clear_range(tsdn, &emap->rtree, rtree_ctx,
+		    (uintptr_t)edata_base_get(edata) + PAGE,
+		    (uintptr_t)edata_last_get(edata) - PAGE);
+	}
+}
+
+void
+emap_remap(tsdn_t *tsdn, emap_t *emap, edata_t *edata, szind_t szind,
+    bool slab) {
+	EMAP_DECLARE_RTREE_CTX;
+
+	if (szind != SC_NSIZES) {
+		rtree_contents_t contents;
+		contents.edata = edata;
+		contents.metadata.szind = szind;
+		contents.metadata.slab = slab;
+		contents.metadata.is_head = edata_is_head_get(edata);
+		contents.metadata.state = edata_state_get(edata);
+
+		rtree_write(tsdn, &emap->rtree, rtree_ctx,
+		    (uintptr_t)edata_addr_get(edata), contents);
+		/*
+		 * Recall that this is called only for active->inactive and
+		 * inactive->active transitions (since only active extents have
+		 * meaningful values for szind and slab).  Active, non-slab
+		 * extents only need to handle lookups at their head (on
+		 * deallocation), so we don't bother filling in the end
+		 * boundary.
+		 *
+		 * For slab extents, we do the end-mapping change.  This still
+		 * leaves the interior unmodified; an emap_register_interior
+		 * call is coming in those cases, though.
+		 */
+		if (slab && edata_size_get(edata) > PAGE) {
+			uintptr_t key = (uintptr_t)edata_past_get(edata)
+			    - (uintptr_t)PAGE;
+			rtree_write(tsdn, &emap->rtree, rtree_ctx, key,
+			    contents);
+		}
+	}
+}
+
+bool
+emap_split_prepare(tsdn_t *tsdn, emap_t *emap, emap_prepare_t *prepare,
+    edata_t *edata, size_t size_a, edata_t *trail, size_t size_b) {
+	EMAP_DECLARE_RTREE_CTX;
+
+	/*
+	 * We use incorrect constants for things like arena ind, zero, ranged,
+	 * and commit state, and head status.  This is a fake edata_t, used to
+	 * facilitate a lookup.
+	 */
+	edata_t lead = {0};
+	edata_init(&lead, 0U, edata_addr_get(edata), size_a, false, 0, 0,
+	    extent_state_active, false, false, EXTENT_PAI_PAC, EXTENT_NOT_HEAD);
+
+	emap_rtree_leaf_elms_lookup(tsdn, emap, rtree_ctx, &lead, false, true,
+	    &prepare->lead_elm_a, &prepare->lead_elm_b);
+	emap_rtree_leaf_elms_lookup(tsdn, emap, rtree_ctx, trail, false, true,
+	    &prepare->trail_elm_a, &prepare->trail_elm_b);
+
+	if (prepare->lead_elm_a == NULL || prepare->lead_elm_b == NULL
+	    || prepare->trail_elm_a == NULL || prepare->trail_elm_b == NULL) {
+		return true;
+	}
+	return false;
+}
+
+void
+emap_split_commit(tsdn_t *tsdn, emap_t *emap, emap_prepare_t *prepare,
+    edata_t *lead, size_t size_a, edata_t *trail, size_t size_b) {
+	/*
+	 * We should think about not writing to the lead leaf element.  We can
+	 * get into situations where a racing realloc-like call can disagree
+	 * with a size lookup request.  I think it's fine to declare that these
+	 * situations are race bugs, but there's an argument to be made that for
+	 * things like xallocx, a size lookup call should return either the old
+	 * size or the new size, but not anything else.
+	 */
+	emap_rtree_write_acquired(tsdn, emap, prepare->lead_elm_a,
+	    prepare->lead_elm_b, lead, SC_NSIZES, /* slab */ false);
+	emap_rtree_write_acquired(tsdn, emap, prepare->trail_elm_a,
+	    prepare->trail_elm_b, trail, SC_NSIZES, /* slab */ false);
+}
+
+void
+emap_merge_prepare(tsdn_t *tsdn, emap_t *emap, emap_prepare_t *prepare,
+    edata_t *lead, edata_t *trail) {
+	EMAP_DECLARE_RTREE_CTX;
+	emap_rtree_leaf_elms_lookup(tsdn, emap, rtree_ctx, lead, true, false,
+	    &prepare->lead_elm_a, &prepare->lead_elm_b);
+	emap_rtree_leaf_elms_lookup(tsdn, emap, rtree_ctx, trail, true, false,
+	    &prepare->trail_elm_a, &prepare->trail_elm_b);
+}
+
+void
+emap_merge_commit(tsdn_t *tsdn, emap_t *emap, emap_prepare_t *prepare,
+    edata_t *lead, edata_t *trail) {
+	rtree_contents_t clear_contents;
+	clear_contents.edata = NULL;
+	clear_contents.metadata.szind = SC_NSIZES;
+	clear_contents.metadata.slab = false;
+	clear_contents.metadata.is_head = false;
+	clear_contents.metadata.state = (extent_state_t)0;
+
+	if (prepare->lead_elm_b != NULL) {
+		rtree_leaf_elm_write(tsdn, &emap->rtree,
+		    prepare->lead_elm_b, clear_contents);
+	}
+
+	rtree_leaf_elm_t *merged_b;
+	if (prepare->trail_elm_b != NULL) {
+		rtree_leaf_elm_write(tsdn, &emap->rtree,
+		    prepare->trail_elm_a, clear_contents);
+		merged_b = prepare->trail_elm_b;
+	} else {
+		merged_b = prepare->trail_elm_a;
+	}
+
+	emap_rtree_write_acquired(tsdn, emap, prepare->lead_elm_a, merged_b,
+	    lead, SC_NSIZES, false);
+}
+
+void
+emap_do_assert_mapped(tsdn_t *tsdn, emap_t *emap, edata_t *edata) {
+	EMAP_DECLARE_RTREE_CTX;
+
+	rtree_contents_t contents = rtree_read(tsdn, &emap->rtree, rtree_ctx,
+	    (uintptr_t)edata_base_get(edata));
+	assert(contents.edata == edata);
+	assert(contents.metadata.is_head == edata_is_head_get(edata));
+	assert(contents.metadata.state == edata_state_get(edata));
+}
+
+void
+emap_do_assert_not_mapped(tsdn_t *tsdn, emap_t *emap, edata_t *edata) {
+	emap_full_alloc_ctx_t context1 = {0};
+	emap_full_alloc_ctx_try_lookup(tsdn, emap, edata_base_get(edata),
+	    &context1);
+	assert(context1.edata == NULL);
+
+	emap_full_alloc_ctx_t context2 = {0};
+	emap_full_alloc_ctx_try_lookup(tsdn, emap, edata_last_get(edata),
+	    &context2);
+	assert(context2.edata == NULL);
+}
diff --git a/deps/jemalloc/src/eset.c b/deps/jemalloc/src/eset.c
new file mode 100644
index 0000000..6f8f335
--- /dev/null
+++ b/deps/jemalloc/src/eset.c
@@ -0,0 +1,282 @@
+#include "jemalloc/internal/jemalloc_preamble.h"
+#include "jemalloc/internal/jemalloc_internal_includes.h"
+
+#include "jemalloc/internal/eset.h"
+
+#define ESET_NPSIZES (SC_NPSIZES + 1)
+
+static void
+eset_bin_init(eset_bin_t *bin) {
+	edata_heap_new(&bin->heap);
+	/*
+	 * heap_min doesn't need initialization; it gets filled in when the bin
+	 * goes from non-empty to empty.
+	 */
+}
+
+static void
+eset_bin_stats_init(eset_bin_stats_t *bin_stats) {
+	atomic_store_zu(&bin_stats->nextents, 0, ATOMIC_RELAXED);
+	atomic_store_zu(&bin_stats->nbytes, 0, ATOMIC_RELAXED);
+}
+
+void
+eset_init(eset_t *eset, extent_state_t state) {
+	for (unsigned i = 0; i < ESET_NPSIZES; i++) {
+		eset_bin_init(&eset->bins[i]);
+		eset_bin_stats_init(&eset->bin_stats[i]);
+	}
+	fb_init(eset->bitmap, ESET_NPSIZES);
+	edata_list_inactive_init(&eset->lru);
+	eset->state = state;
+}
+
+size_t
+eset_npages_get(eset_t *eset) {
+	return atomic_load_zu(&eset->npages, ATOMIC_RELAXED);
+}
+
+size_t
+eset_nextents_get(eset_t *eset, pszind_t pind) {
+	return atomic_load_zu(&eset->bin_stats[pind].nextents, ATOMIC_RELAXED);
+}
+
+size_t
+eset_nbytes_get(eset_t *eset, pszind_t pind) {
+	return atomic_load_zu(&eset->bin_stats[pind].nbytes, ATOMIC_RELAXED);
+}
+
+static void
+eset_stats_add(eset_t *eset, pszind_t pind, size_t sz) {
+	size_t cur = atomic_load_zu(&eset->bin_stats[pind].nextents,
+	    ATOMIC_RELAXED);
+	atomic_store_zu(&eset->bin_stats[pind].nextents, cur + 1,
+	    ATOMIC_RELAXED);
+	cur = atomic_load_zu(&eset->bin_stats[pind].nbytes, ATOMIC_RELAXED);
+	atomic_store_zu(&eset->bin_stats[pind].nbytes, cur + sz,
+	    ATOMIC_RELAXED);
+}
+
+static void
+eset_stats_sub(eset_t *eset, pszind_t pind, size_t sz) {
+	size_t cur = atomic_load_zu(&eset->bin_stats[pind].nextents,
+	    ATOMIC_RELAXED);
+	atomic_store_zu(&eset->bin_stats[pind].nextents, cur - 1,
+	    ATOMIC_RELAXED);
+	cur = atomic_load_zu(&eset->bin_stats[pind].nbytes, ATOMIC_RELAXED);
+	atomic_store_zu(&eset->bin_stats[pind].nbytes, cur - sz,
+	    ATOMIC_RELAXED);
+}
+
+void
+eset_insert(eset_t *eset, edata_t *edata) {
+	assert(edata_state_get(edata) == eset->state);
+
+	size_t size = edata_size_get(edata);
+	size_t psz = sz_psz_quantize_floor(size);
+	pszind_t pind = sz_psz2ind(psz);
+
+	edata_cmp_summary_t edata_cmp_summary = edata_cmp_summary_get(edata);
+	if (edata_heap_empty(&eset->bins[pind].heap)) {
+		fb_set(eset->bitmap, ESET_NPSIZES, (size_t)pind);
+		/* Only element is automatically the min element. */
+		eset->bins[pind].heap_min = edata_cmp_summary;
+	} else {
+		/*
+		 * There's already a min element; update the summary if we're
+		 * about to insert a lower one.
+		 */
+		if (edata_cmp_summary_comp(edata_cmp_summary,
+		    eset->bins[pind].heap_min) < 0) {
+			eset->bins[pind].heap_min = edata_cmp_summary;
+		}
+	}
+	edata_heap_insert(&eset->bins[pind].heap, edata);
+
+	if (config_stats) {
+		eset_stats_add(eset, pind, size);
+	}
+
+	edata_list_inactive_append(&eset->lru, edata);
+	size_t npages = size >> LG_PAGE;
+	/*
+	 * All modifications to npages hold the mutex (as asserted above), so we
+	 * don't need an atomic fetch-add; we can get by with a load followed by
+	 * a store.
+	 */
+	size_t cur_eset_npages =
+	    atomic_load_zu(&eset->npages, ATOMIC_RELAXED);
+	atomic_store_zu(&eset->npages, cur_eset_npages + npages,
+	    ATOMIC_RELAXED);
+}
+
+void
+eset_remove(eset_t *eset, edata_t *edata) {
+	assert(edata_state_get(edata) == eset->state ||
+	    edata_state_in_transition(edata_state_get(edata)));
+
+	size_t size = edata_size_get(edata);
+	size_t psz = sz_psz_quantize_floor(size);
+	pszind_t pind = sz_psz2ind(psz);
+	if (config_stats) {
+		eset_stats_sub(eset, pind, size);
+	}
+
+	edata_cmp_summary_t edata_cmp_summary = edata_cmp_summary_get(edata);
+	edata_heap_remove(&eset->bins[pind].heap, edata);
+	if (edata_heap_empty(&eset->bins[pind].heap)) {
+		fb_unset(eset->bitmap, ESET_NPSIZES, (size_t)pind);
+	} else {
+		/*
+		 * This is a little weird; we compare if the summaries are
+		 * equal, rather than if the edata we removed was the heap
+		 * minimum.  The reason why is that getting the heap minimum
+		 * can cause a pairing heap merge operation.  We can avoid this
+		 * if we only update the min if it's changed, in which case the
+		 * summaries of the removed element and the min element should
+		 * compare equal.
+		 */
+		if (edata_cmp_summary_comp(edata_cmp_summary,
+		    eset->bins[pind].heap_min) == 0) {
+			eset->bins[pind].heap_min = edata_cmp_summary_get(
+			    edata_heap_first(&eset->bins[pind].heap));
+		}
+	}
+	edata_list_inactive_remove(&eset->lru, edata);
+	size_t npages = size >> LG_PAGE;
+	/*
+	 * As in eset_insert, we hold eset->mtx and so don't need atomic
+	 * operations for updating eset->npages.
+	 */
+	size_t cur_extents_npages =
+	    atomic_load_zu(&eset->npages, ATOMIC_RELAXED);
+	assert(cur_extents_npages >= npages);
+	atomic_store_zu(&eset->npages,
+	    cur_extents_npages - (size >> LG_PAGE), ATOMIC_RELAXED);
+}
+
+/*
+ * Find an extent with size [min_size, max_size) to satisfy the alignment
+ * requirement.  For each size, try only the first extent in the heap.
+ */
+static edata_t *
+eset_fit_alignment(eset_t *eset, size_t min_size, size_t max_size,
+    size_t alignment) {
+        pszind_t pind = sz_psz2ind(sz_psz_quantize_ceil(min_size));
+        pszind_t pind_max = sz_psz2ind(sz_psz_quantize_ceil(max_size));
+
+	for (pszind_t i =
+	    (pszind_t)fb_ffs(eset->bitmap, ESET_NPSIZES, (size_t)pind);
+	    i < pind_max;
+	    i = (pszind_t)fb_ffs(eset->bitmap, ESET_NPSIZES, (size_t)i + 1)) {
+		assert(i < SC_NPSIZES);
+		assert(!edata_heap_empty(&eset->bins[i].heap));
+		edata_t *edata = edata_heap_first(&eset->bins[i].heap);
+		uintptr_t base = (uintptr_t)edata_base_get(edata);
+		size_t candidate_size = edata_size_get(edata);
+		assert(candidate_size >= min_size);
+
+		uintptr_t next_align = ALIGNMENT_CEILING((uintptr_t)base,
+		    PAGE_CEILING(alignment));
+		if (base > next_align || base + candidate_size <= next_align) {
+			/* Overflow or not crossing the next alignment. */
+			continue;
+		}
+
+		size_t leadsize = next_align - base;
+		if (candidate_size - leadsize >= min_size) {
+			return edata;
+		}
+	}
+
+	return NULL;
+}
+
+/*
+ * Do first-fit extent selection, i.e. select the oldest/lowest extent that is
+ * large enough.
+ *
+ * lg_max_fit is the (log of the) maximum ratio between the requested size and
+ * the returned size that we'll allow.  This can reduce fragmentation by
+ * avoiding reusing and splitting large extents for smaller sizes.  In practice,
+ * it's set to opt_lg_extent_max_active_fit for the dirty eset and SC_PTR_BITS
+ * for others.
+ */
+static edata_t *
+eset_first_fit(eset_t *eset, size_t size, bool exact_only,
+    unsigned lg_max_fit) {
+	edata_t *ret = NULL;
+	edata_cmp_summary_t ret_summ JEMALLOC_CC_SILENCE_INIT({0});
+
+	pszind_t pind = sz_psz2ind(sz_psz_quantize_ceil(size));
+
+	if (exact_only) {
+		return edata_heap_empty(&eset->bins[pind].heap) ? NULL :
+		    edata_heap_first(&eset->bins[pind].heap);
+	}
+
+	for (pszind_t i =
+	    (pszind_t)fb_ffs(eset->bitmap, ESET_NPSIZES, (size_t)pind);
+	    i < ESET_NPSIZES;
+	    i = (pszind_t)fb_ffs(eset->bitmap, ESET_NPSIZES, (size_t)i + 1)) {
+		assert(!edata_heap_empty(&eset->bins[i].heap));
+		if (lg_max_fit == SC_PTR_BITS) {
+			/*
+			 * We'll shift by this below, and shifting out all the
+			 * bits is undefined.  Decreasing is safe, since the
+			 * page size is larger than 1 byte.
+			 */
+			lg_max_fit = SC_PTR_BITS - 1;
+		}
+		if ((sz_pind2sz(i) >> lg_max_fit) > size) {
+			break;
+		}
+		if (ret == NULL || edata_cmp_summary_comp(
+		    eset->bins[i].heap_min, ret_summ) < 0) {
+			/*
+			 * We grab the edata as early as possible, even though
+			 * we might change it later.  Practically, a large
+			 * portion of eset_fit calls succeed at the first valid
+			 * index, so this doesn't cost much, and we get the
+			 * effect of prefetching the edata as early as possible.
+			 */
+			edata_t *edata = edata_heap_first(&eset->bins[i].heap);
+			assert(edata_size_get(edata) >= size);
+			assert(ret == NULL || edata_snad_comp(edata, ret) < 0);
+			assert(ret == NULL || edata_cmp_summary_comp(
+			    eset->bins[i].heap_min,
+			    edata_cmp_summary_get(edata)) == 0);
+			ret = edata;
+			ret_summ = eset->bins[i].heap_min;
+		}
+		if (i == SC_NPSIZES) {
+			break;
+		}
+		assert(i < SC_NPSIZES);
+	}
+
+	return ret;
+}
+
+edata_t *
+eset_fit(eset_t *eset, size_t esize, size_t alignment, bool exact_only,
+    unsigned lg_max_fit) {
+	size_t max_size = esize + PAGE_CEILING(alignment) - PAGE;
+	/* Beware size_t wrap-around. */
+	if (max_size < esize) {
+		return NULL;
+	}
+
+	edata_t *edata = eset_first_fit(eset, max_size, exact_only, lg_max_fit);
+
+	if (alignment > PAGE && edata == NULL) {
+		/*
+		 * max_size guarantees the alignment requirement but is rather
+		 * pessimistic.  Next we try to satisfy the aligned allocation
+		 * with sizes in [esize, max_size).
+		 */
+		edata = eset_fit_alignment(eset, esize, max_size, alignment);
+	}
+
+	return edata;
+}
diff --git a/deps/jemalloc/src/exp_grow.c b/deps/jemalloc/src/exp_grow.c
new file mode 100644
index 0000000..386471f
--- /dev/null
+++ b/deps/jemalloc/src/exp_grow.c
@@ -0,0 +1,8 @@
+#include "jemalloc/internal/jemalloc_preamble.h"
+#include "jemalloc/internal/jemalloc_internal_includes.h"
+
+void
+exp_grow_init(exp_grow_t *exp_grow) {
+	exp_grow->next = sz_psz2ind(HUGEPAGE);
+	exp_grow->limit = sz_psz2ind(SC_LARGE_MAXCLASS);
+}
diff --git a/deps/jemalloc/src/extent.c b/deps/jemalloc/src/extent.c
new file mode 100644
index 0000000..cf3d1f3
--- /dev/null
+++ b/deps/jemalloc/src/extent.c
@@ -0,0 +1,1326 @@
+#include "jemalloc/internal/jemalloc_preamble.h"
+#include "jemalloc/internal/jemalloc_internal_includes.h"
+
+#include "jemalloc/internal/assert.h"
+#include "jemalloc/internal/emap.h"
+#include "jemalloc/internal/extent_dss.h"
+#include "jemalloc/internal/extent_mmap.h"
+#include "jemalloc/internal/ph.h"
+#include "jemalloc/internal/mutex.h"
+
+/******************************************************************************/
+/* Data. */
+
+size_t opt_lg_extent_max_active_fit = LG_EXTENT_MAX_ACTIVE_FIT_DEFAULT;
+
+static bool extent_commit_impl(tsdn_t *tsdn, ehooks_t *ehooks, edata_t *edata,
+    size_t offset, size_t length, bool growing_retained);
+static bool extent_purge_lazy_impl(tsdn_t *tsdn, ehooks_t *ehooks,
+    edata_t *edata, size_t offset, size_t length, bool growing_retained);
+static bool extent_purge_forced_impl(tsdn_t *tsdn, ehooks_t *ehooks,
+    edata_t *edata, size_t offset, size_t length, bool growing_retained);
+static edata_t *extent_split_impl(tsdn_t *tsdn, pac_t *pac, ehooks_t *ehooks,
+    edata_t *edata, size_t size_a, size_t size_b, bool holding_core_locks);
+static bool extent_merge_impl(tsdn_t *tsdn, pac_t *pac, ehooks_t *ehooks,
+    edata_t *a, edata_t *b, bool holding_core_locks);
+
+/* Used exclusively for gdump triggering. */
+static atomic_zu_t curpages;
+static atomic_zu_t highpages;
+
+/******************************************************************************/
+/*
+ * Function prototypes for static functions that are referenced prior to
+ * definition.
+ */
+
+static void extent_deregister(tsdn_t *tsdn, pac_t *pac, edata_t *edata);
+static edata_t *extent_recycle(tsdn_t *tsdn, pac_t *pac, ehooks_t *ehooks,
+    ecache_t *ecache, edata_t *expand_edata, size_t usize, size_t alignment,
+    bool zero, bool *commit, bool growing_retained, bool guarded);
+static edata_t *extent_try_coalesce(tsdn_t *tsdn, pac_t *pac, ehooks_t *ehooks,
+    ecache_t *ecache, edata_t *edata, bool *coalesced);
+static edata_t *extent_alloc_retained(tsdn_t *tsdn, pac_t *pac,
+    ehooks_t *ehooks, edata_t *expand_edata, size_t size, size_t alignment,
+    bool zero, bool *commit, bool guarded);
+
+/******************************************************************************/
+
+size_t
+extent_sn_next(pac_t *pac) {
+	return atomic_fetch_add_zu(&pac->extent_sn_next, 1, ATOMIC_RELAXED);
+}
+
+static inline bool
+extent_may_force_decay(pac_t *pac) {
+	return !(pac_decay_ms_get(pac, extent_state_dirty) == -1
+	    || pac_decay_ms_get(pac, extent_state_muzzy) == -1);
+}
+
+static bool
+extent_try_delayed_coalesce(tsdn_t *tsdn, pac_t *pac, ehooks_t *ehooks,
+    ecache_t *ecache, edata_t *edata) {
+	emap_update_edata_state(tsdn, pac->emap, edata, extent_state_active);
+
+	bool coalesced;
+	edata = extent_try_coalesce(tsdn, pac, ehooks, ecache,
+	    edata, &coalesced);
+	emap_update_edata_state(tsdn, pac->emap, edata, ecache->state);
+
+	if (!coalesced) {
+		return true;
+	}
+	eset_insert(&ecache->eset, edata);
+	return false;
+}
+
+edata_t *
+ecache_alloc(tsdn_t *tsdn, pac_t *pac, ehooks_t *ehooks, ecache_t *ecache,
+    edata_t *expand_edata, size_t size, size_t alignment, bool zero,
+    bool guarded) {
+	assert(size != 0);
+	assert(alignment != 0);
+	witness_assert_depth_to_rank(tsdn_witness_tsdp_get(tsdn),
+	    WITNESS_RANK_CORE, 0);
+
+	bool commit = true;
+	edata_t *edata = extent_recycle(tsdn, pac, ehooks, ecache, expand_edata,
+	    size, alignment, zero, &commit, false, guarded);
+	assert(edata == NULL || edata_pai_get(edata) == EXTENT_PAI_PAC);
+	assert(edata == NULL || edata_guarded_get(edata) == guarded);
+	return edata;
+}
+
+edata_t *
+ecache_alloc_grow(tsdn_t *tsdn, pac_t *pac, ehooks_t *ehooks, ecache_t *ecache,
+    edata_t *expand_edata, size_t size, size_t alignment, bool zero,
+    bool guarded) {
+	assert(size != 0);
+	assert(alignment != 0);
+	witness_assert_depth_to_rank(tsdn_witness_tsdp_get(tsdn),
+	    WITNESS_RANK_CORE, 0);
+
+	bool commit = true;
+	edata_t *edata = extent_alloc_retained(tsdn, pac, ehooks, expand_edata,
+	    size, alignment, zero, &commit, guarded);
+	if (edata == NULL) {
+		if (opt_retain && expand_edata != NULL) {
+			/*
+			 * When retain is enabled and trying to expand, we do
+			 * not attempt extent_alloc_wrapper which does mmap that
+			 * is very unlikely to succeed (unless it happens to be
+			 * at the end).
+			 */
+			return NULL;
+		}
+		if (guarded) {
+			/*
+			 * Means no cached guarded extents available (and no
+			 * grow_retained was attempted).  The pac_alloc flow
+			 * will alloc regular extents to make new guarded ones.
+			 */
+			return NULL;
+		}
+		void *new_addr = (expand_edata == NULL) ? NULL :
+		    edata_past_get(expand_edata);
+		edata = extent_alloc_wrapper(tsdn, pac, ehooks, new_addr,
+		    size, alignment, zero, &commit,
+		    /* growing_retained */ false);
+	}
+
+	assert(edata == NULL || edata_pai_get(edata) == EXTENT_PAI_PAC);
+	return edata;
+}
+
+void
+ecache_dalloc(tsdn_t *tsdn, pac_t *pac, ehooks_t *ehooks, ecache_t *ecache,
+    edata_t *edata) {
+	assert(edata_base_get(edata) != NULL);
+	assert(edata_size_get(edata) != 0);
+	assert(edata_pai_get(edata) == EXTENT_PAI_PAC);
+	witness_assert_depth_to_rank(tsdn_witness_tsdp_get(tsdn),
+	    WITNESS_RANK_CORE, 0);
+
+	edata_addr_set(edata, edata_base_get(edata));
+	edata_zeroed_set(edata, false);
+
+	extent_record(tsdn, pac, ehooks, ecache, edata);
+}
+
+edata_t *
+ecache_evict(tsdn_t *tsdn, pac_t *pac, ehooks_t *ehooks,
+    ecache_t *ecache, size_t npages_min) {
+	malloc_mutex_lock(tsdn, &ecache->mtx);
+
+	/*
+	 * Get the LRU coalesced extent, if any.  If coalescing was delayed,
+	 * the loop will iterate until the LRU extent is fully coalesced.
+	 */
+	edata_t *edata;
+	while (true) {
+		/* Get the LRU extent, if any. */
+		eset_t *eset = &ecache->eset;
+		edata = edata_list_inactive_first(&eset->lru);
+		if (edata == NULL) {
+			/*
+			 * Next check if there are guarded extents.  They are
+			 * more expensive to purge (since they are not
+			 * mergeable), thus in favor of caching them longer.
+			 */
+			eset = &ecache->guarded_eset;
+			edata = edata_list_inactive_first(&eset->lru);
+			if (edata == NULL) {
+				goto label_return;
+			}
+		}
+		/* Check the eviction limit. */
+		size_t extents_npages = ecache_npages_get(ecache);
+		if (extents_npages <= npages_min) {
+			edata = NULL;
+			goto label_return;
+		}
+		eset_remove(eset, edata);
+		if (!ecache->delay_coalesce || edata_guarded_get(edata)) {
+			break;
+		}
+		/* Try to coalesce. */
+		if (extent_try_delayed_coalesce(tsdn, pac, ehooks, ecache,
+		    edata)) {
+			break;
+		}
+		/*
+		 * The LRU extent was just coalesced and the result placed in
+		 * the LRU at its neighbor's position.  Start over.
+		 */
+	}
+
+	/*
+	 * Either mark the extent active or deregister it to protect against
+	 * concurrent operations.
+	 */
+	switch (ecache->state) {
+	case extent_state_active:
+		not_reached();
+	case extent_state_dirty:
+	case extent_state_muzzy:
+		emap_update_edata_state(tsdn, pac->emap, edata,
+		    extent_state_active);
+		break;
+	case extent_state_retained:
+		extent_deregister(tsdn, pac, edata);
+		break;
+	default:
+		not_reached();
+	}
+
+label_return:
+	malloc_mutex_unlock(tsdn, &ecache->mtx);
+	return edata;
+}
+
+/*
+ * This can only happen when we fail to allocate a new extent struct (which
+ * indicates OOM), e.g. when trying to split an existing extent.
+ */
+static void
+extents_abandon_vm(tsdn_t *tsdn, pac_t *pac, ehooks_t *ehooks, ecache_t *ecache,
+    edata_t *edata, bool growing_retained) {
+	size_t sz = edata_size_get(edata);
+	if (config_stats) {
+		atomic_fetch_add_zu(&pac->stats->abandoned_vm, sz,
+		    ATOMIC_RELAXED);
+	}
+	/*
+	 * Leak extent after making sure its pages have already been purged, so
+	 * that this is only a virtual memory leak.
+	 */
+	if (ecache->state == extent_state_dirty) {
+		if (extent_purge_lazy_impl(tsdn, ehooks, edata, 0, sz,
+		    growing_retained)) {
+			extent_purge_forced_impl(tsdn, ehooks, edata, 0,
+			    edata_size_get(edata), growing_retained);
+		}
+	}
+	edata_cache_put(tsdn, pac->edata_cache, edata);
+}
+
+static void
+extent_deactivate_locked_impl(tsdn_t *tsdn, pac_t *pac, ecache_t *ecache,
+    edata_t *edata) {
+	malloc_mutex_assert_owner(tsdn, &ecache->mtx);
+	assert(edata_arena_ind_get(edata) == ecache_ind_get(ecache));
+
+	emap_update_edata_state(tsdn, pac->emap, edata, ecache->state);
+	eset_t *eset = edata_guarded_get(edata) ? &ecache->guarded_eset :
+	    &ecache->eset;
+	eset_insert(eset, edata);
+}
+
+static void
+extent_deactivate_locked(tsdn_t *tsdn, pac_t *pac, ecache_t *ecache,
+    edata_t *edata) {
+	assert(edata_state_get(edata) == extent_state_active);
+	extent_deactivate_locked_impl(tsdn, pac, ecache, edata);
+}
+
+static void
+extent_deactivate_check_state_locked(tsdn_t *tsdn, pac_t *pac, ecache_t *ecache,
+    edata_t *edata, extent_state_t expected_state) {
+	assert(edata_state_get(edata) == expected_state);
+	extent_deactivate_locked_impl(tsdn, pac, ecache, edata);
+}
+
+static void
+extent_activate_locked(tsdn_t *tsdn, pac_t *pac, ecache_t *ecache, eset_t *eset,
+    edata_t *edata) {
+	assert(edata_arena_ind_get(edata) == ecache_ind_get(ecache));
+	assert(edata_state_get(edata) == ecache->state ||
+	    edata_state_get(edata) == extent_state_merging);
+
+	eset_remove(eset, edata);
+	emap_update_edata_state(tsdn, pac->emap, edata, extent_state_active);
+}
+
+void
+extent_gdump_add(tsdn_t *tsdn, const edata_t *edata) {
+	cassert(config_prof);
+	/* prof_gdump() requirement. */
+	witness_assert_depth_to_rank(tsdn_witness_tsdp_get(tsdn),
+	    WITNESS_RANK_CORE, 0);
+
+	if (opt_prof && edata_state_get(edata) == extent_state_active) {
+		size_t nadd = edata_size_get(edata) >> LG_PAGE;
+		size_t cur = atomic_fetch_add_zu(&curpages, nadd,
+		    ATOMIC_RELAXED) + nadd;
+		size_t high = atomic_load_zu(&highpages, ATOMIC_RELAXED);
+		while (cur > high && !atomic_compare_exchange_weak_zu(
+		    &highpages, &high, cur, ATOMIC_RELAXED, ATOMIC_RELAXED)) {
+			/*
+			 * Don't refresh cur, because it may have decreased
+			 * since this thread lost the highpages update race.
+			 * Note that high is updated in case of CAS failure.
+			 */
+		}
+		if (cur > high && prof_gdump_get_unlocked()) {
+			prof_gdump(tsdn);
+		}
+	}
+}
+
+static void
+extent_gdump_sub(tsdn_t *tsdn, const edata_t *edata) {
+	cassert(config_prof);
+
+	if (opt_prof && edata_state_get(edata) == extent_state_active) {
+		size_t nsub = edata_size_get(edata) >> LG_PAGE;
+		assert(atomic_load_zu(&curpages, ATOMIC_RELAXED) >= nsub);
+		atomic_fetch_sub_zu(&curpages, nsub, ATOMIC_RELAXED);
+	}
+}
+
+static bool
+extent_register_impl(tsdn_t *tsdn, pac_t *pac, edata_t *edata, bool gdump_add) {
+	assert(edata_state_get(edata) == extent_state_active);
+	/*
+	 * No locking needed, as the edata must be in active state, which
+	 * prevents other threads from accessing the edata.
+	 */
+	if (emap_register_boundary(tsdn, pac->emap, edata, SC_NSIZES,
+	    /* slab */ false)) {
+		return true;
+	}
+
+	if (config_prof && gdump_add) {
+		extent_gdump_add(tsdn, edata);
+	}
+
+	return false;
+}
+
+static bool
+extent_register(tsdn_t *tsdn, pac_t *pac, edata_t *edata) {
+	return extent_register_impl(tsdn, pac, edata, true);
+}
+
+static bool
+extent_register_no_gdump_add(tsdn_t *tsdn, pac_t *pac, edata_t *edata) {
+	return extent_register_impl(tsdn, pac, edata, false);
+}
+
+static void
+extent_reregister(tsdn_t *tsdn, pac_t *pac, edata_t *edata) {
+	bool err = extent_register(tsdn, pac, edata);
+	assert(!err);
+}
+
+/*
+ * Removes all pointers to the given extent from the global rtree.
+ */
+static void
+extent_deregister_impl(tsdn_t *tsdn, pac_t *pac, edata_t *edata,
+    bool gdump) {
+	emap_deregister_boundary(tsdn, pac->emap, edata);
+
+	if (config_prof && gdump) {
+		extent_gdump_sub(tsdn, edata);
+	}
+}
+
+static void
+extent_deregister(tsdn_t *tsdn, pac_t *pac, edata_t *edata) {
+	extent_deregister_impl(tsdn, pac, edata, true);
+}
+
+static void
+extent_deregister_no_gdump_sub(tsdn_t *tsdn, pac_t *pac,
+    edata_t *edata) {
+	extent_deregister_impl(tsdn, pac, edata, false);
+}
+
+/*
+ * Tries to find and remove an extent from ecache that can be used for the
+ * given allocation request.
+ */
+static edata_t *
+extent_recycle_extract(tsdn_t *tsdn, pac_t *pac, ehooks_t *ehooks,
+    ecache_t *ecache, edata_t *expand_edata, size_t size, size_t alignment,
+    bool guarded) {
+	malloc_mutex_assert_owner(tsdn, &ecache->mtx);
+	assert(alignment > 0);
+	if (config_debug && expand_edata != NULL) {
+		/*
+		 * Non-NULL expand_edata indicates in-place expanding realloc.
+		 * new_addr must either refer to a non-existing extent, or to
+		 * the base of an extant extent, since only active slabs support
+		 * interior lookups (which of course cannot be recycled).
+		 */
+		void *new_addr = edata_past_get(expand_edata);
+		assert(PAGE_ADDR2BASE(new_addr) == new_addr);
+		assert(alignment <= PAGE);
+	}
+
+	edata_t *edata;
+	eset_t *eset = guarded ? &ecache->guarded_eset : &ecache->eset;
+	if (expand_edata != NULL) {
+		edata = emap_try_acquire_edata_neighbor_expand(tsdn, pac->emap,
+		    expand_edata, EXTENT_PAI_PAC, ecache->state);
+		if (edata != NULL) {
+			extent_assert_can_expand(expand_edata, edata);
+			if (edata_size_get(edata) < size) {
+				emap_release_edata(tsdn, pac->emap, edata,
+				    ecache->state);
+				edata = NULL;
+			}
+		}
+	} else {
+		/*
+		 * A large extent might be broken up from its original size to
+		 * some small size to satisfy a small request.  When that small
+		 * request is freed, though, it won't merge back with the larger
+		 * extent if delayed coalescing is on.  The large extent can
+		 * then no longer satify a request for its original size.  To
+		 * limit this effect, when delayed coalescing is enabled, we
+		 * put a cap on how big an extent we can split for a request.
+		 */
+		unsigned lg_max_fit = ecache->delay_coalesce
+		    ? (unsigned)opt_lg_extent_max_active_fit : SC_PTR_BITS;
+
+		/*
+		 * If split and merge are not allowed (Windows w/o retain), try
+		 * exact fit only.
+		 *
+		 * For simplicity purposes, splitting guarded extents is not
+		 * supported.  Hence, we do only exact fit for guarded
+		 * allocations.
+		 */
+		bool exact_only = (!maps_coalesce && !opt_retain) || guarded;
+		edata = eset_fit(eset, size, alignment, exact_only,
+		    lg_max_fit);
+	}
+	if (edata == NULL) {
+		return NULL;
+	}
+	assert(!guarded || edata_guarded_get(edata));
+	extent_activate_locked(tsdn, pac, ecache, eset, edata);
+
+	return edata;
+}
+
+/*
+ * Given an allocation request and an extent guaranteed to be able to satisfy
+ * it, this splits off lead and trail extents, leaving edata pointing to an
+ * extent satisfying the allocation.
+ * This function doesn't put lead or trail into any ecache; it's the caller's
+ * job to ensure that they can be reused.
+ */
+typedef enum {
+	/*
+	 * Split successfully.  lead, edata, and trail, are modified to extents
+	 * describing the ranges before, in, and after the given allocation.
+	 */
+	extent_split_interior_ok,
+	/*
+	 * The extent can't satisfy the given allocation request.  None of the
+	 * input edata_t *s are touched.
+	 */
+	extent_split_interior_cant_alloc,
+	/*
+	 * In a potentially invalid state.  Must leak (if *to_leak is non-NULL),
+	 * and salvage what's still salvageable (if *to_salvage is non-NULL).
+	 * None of lead, edata, or trail are valid.
+	 */
+	extent_split_interior_error
+} extent_split_interior_result_t;
+
+static extent_split_interior_result_t
+extent_split_interior(tsdn_t *tsdn, pac_t *pac, ehooks_t *ehooks,
+    /* The result of splitting, in case of success. */
+    edata_t **edata, edata_t **lead, edata_t **trail,
+    /* The mess to clean up, in case of error. */
+    edata_t **to_leak, edata_t **to_salvage,
+    edata_t *expand_edata, size_t size, size_t alignment) {
+	size_t leadsize = ALIGNMENT_CEILING((uintptr_t)edata_base_get(*edata),
+	    PAGE_CEILING(alignment)) - (uintptr_t)edata_base_get(*edata);
+	assert(expand_edata == NULL || leadsize == 0);
+	if (edata_size_get(*edata) < leadsize + size) {
+		return extent_split_interior_cant_alloc;
+	}
+	size_t trailsize = edata_size_get(*edata) - leadsize - size;
+
+	*lead = NULL;
+	*trail = NULL;
+	*to_leak = NULL;
+	*to_salvage = NULL;
+
+	/* Split the lead. */
+	if (leadsize != 0) {
+		assert(!edata_guarded_get(*edata));
+		*lead = *edata;
+		*edata = extent_split_impl(tsdn, pac, ehooks, *lead, leadsize,
+		    size + trailsize, /* holding_core_locks*/ true);
+		if (*edata == NULL) {
+			*to_leak = *lead;
+			*lead = NULL;
+			return extent_split_interior_error;
+		}
+	}
+
+	/* Split the trail. */
+	if (trailsize != 0) {
+		assert(!edata_guarded_get(*edata));
+		*trail = extent_split_impl(tsdn, pac, ehooks, *edata, size,
+		    trailsize, /* holding_core_locks */ true);
+		if (*trail == NULL) {
+			*to_leak = *edata;
+			*to_salvage = *lead;
+			*lead = NULL;
+			*edata = NULL;
+			return extent_split_interior_error;
+		}
+	}
+
+	return extent_split_interior_ok;
+}
+
+/*
+ * This fulfills the indicated allocation request out of the given extent (which
+ * the caller should have ensured was big enough).  If there's any unused space
+ * before or after the resulting allocation, that space is given its own extent
+ * and put back into ecache.
+ */
+static edata_t *
+extent_recycle_split(tsdn_t *tsdn, pac_t *pac, ehooks_t *ehooks,
+    ecache_t *ecache, edata_t *expand_edata, size_t size, size_t alignment,
+    edata_t *edata, bool growing_retained) {
+	assert(!edata_guarded_get(edata) || size == edata_size_get(edata));
+	malloc_mutex_assert_owner(tsdn, &ecache->mtx);
+
+	edata_t *lead;
+	edata_t *trail;
+	edata_t *to_leak JEMALLOC_CC_SILENCE_INIT(NULL);
+	edata_t *to_salvage JEMALLOC_CC_SILENCE_INIT(NULL);
+
+	extent_split_interior_result_t result = extent_split_interior(
+	    tsdn, pac, ehooks, &edata, &lead, &trail, &to_leak, &to_salvage,
+	    expand_edata, size, alignment);
+
+	if (!maps_coalesce && result != extent_split_interior_ok
+	    && !opt_retain) {
+		/*
+		 * Split isn't supported (implies Windows w/o retain).  Avoid
+		 * leaking the extent.
+		 */
+		assert(to_leak != NULL && lead == NULL && trail == NULL);
+		extent_deactivate_locked(tsdn, pac, ecache, to_leak);
+		return NULL;
+	}
+
+	if (result == extent_split_interior_ok) {
+		if (lead != NULL) {
+			extent_deactivate_locked(tsdn, pac, ecache, lead);
+		}
+		if (trail != NULL) {
+			extent_deactivate_locked(tsdn, pac, ecache, trail);
+		}
+		return edata;
+	} else {
+		/*
+		 * We should have picked an extent that was large enough to
+		 * fulfill our allocation request.
+		 */
+		assert(result == extent_split_interior_error);
+		if (to_salvage != NULL) {
+			extent_deregister(tsdn, pac, to_salvage);
+		}
+		if (to_leak != NULL) {
+			extent_deregister_no_gdump_sub(tsdn, pac, to_leak);
+			/*
+			 * May go down the purge path (which assume no ecache
+			 * locks).  Only happens with OOM caused split failures.
+			 */
+			malloc_mutex_unlock(tsdn, &ecache->mtx);
+			extents_abandon_vm(tsdn, pac, ehooks, ecache, to_leak,
+			    growing_retained);
+			malloc_mutex_lock(tsdn, &ecache->mtx);
+		}
+		return NULL;
+	}
+	unreachable();
+}
+
+/*
+ * Tries to satisfy the given allocation request by reusing one of the extents
+ * in the given ecache_t.
+ */
+static edata_t *
+extent_recycle(tsdn_t *tsdn, pac_t *pac, ehooks_t *ehooks, ecache_t *ecache,
+    edata_t *expand_edata, size_t size, size_t alignment, bool zero,
+    bool *commit, bool growing_retained, bool guarded) {
+	witness_assert_depth_to_rank(tsdn_witness_tsdp_get(tsdn),
+	    WITNESS_RANK_CORE, growing_retained ? 1 : 0);
+	assert(!guarded || expand_edata == NULL);
+	assert(!guarded || alignment <= PAGE);
+
+	malloc_mutex_lock(tsdn, &ecache->mtx);
+
+	edata_t *edata = extent_recycle_extract(tsdn, pac, ehooks, ecache,
+	    expand_edata, size, alignment, guarded);
+	if (edata == NULL) {
+		malloc_mutex_unlock(tsdn, &ecache->mtx);
+		return NULL;
+	}
+
+	edata = extent_recycle_split(tsdn, pac, ehooks, ecache, expand_edata,
+	    size, alignment, edata, growing_retained);
+	malloc_mutex_unlock(tsdn, &ecache->mtx);
+	if (edata == NULL) {
+		return NULL;
+	}
+
+	assert(edata_state_get(edata) == extent_state_active);
+	if (extent_commit_zero(tsdn, ehooks, edata, *commit, zero,
+	    growing_retained)) {
+		extent_record(tsdn, pac, ehooks, ecache, edata);
+		return NULL;
+	}
+	if (edata_committed_get(edata)) {
+		/*
+		 * This reverses the purpose of this variable - previously it
+		 * was treated as an input parameter, now it turns into an
+		 * output parameter, reporting if the edata has actually been
+		 * committed.
+		 */
+		*commit = true;
+	}
+	return edata;
+}
+
+/*
+ * If virtual memory is retained, create increasingly larger extents from which
+ * to split requested extents in order to limit the total number of disjoint
+ * virtual memory ranges retained by each shard.
+ */
+static edata_t *
+extent_grow_retained(tsdn_t *tsdn, pac_t *pac, ehooks_t *ehooks,
+    size_t size, size_t alignment, bool zero, bool *commit) {
+	malloc_mutex_assert_owner(tsdn, &pac->grow_mtx);
+
+	size_t alloc_size_min = size + PAGE_CEILING(alignment) - PAGE;
+	/* Beware size_t wrap-around. */
+	if (alloc_size_min < size) {
+		goto label_err;
+	}
+	/*
+	 * Find the next extent size in the series that would be large enough to
+	 * satisfy this request.
+	 */
+	size_t alloc_size;
+	pszind_t exp_grow_skip;
+	bool err = exp_grow_size_prepare(&pac->exp_grow, alloc_size_min,
+	    &alloc_size, &exp_grow_skip);
+	if (err) {
+		goto label_err;
+	}
+
+	edata_t *edata = edata_cache_get(tsdn, pac->edata_cache);
+	if (edata == NULL) {
+		goto label_err;
+	}
+	bool zeroed = false;
+	bool committed = false;
+
+	void *ptr = ehooks_alloc(tsdn, ehooks, NULL, alloc_size, PAGE, &zeroed,
+	    &committed);
+
+	if (ptr == NULL) {
+		edata_cache_put(tsdn, pac->edata_cache, edata);
+		goto label_err;
+	}
+
+	edata_init(edata, ecache_ind_get(&pac->ecache_retained), ptr,
+	    alloc_size, false, SC_NSIZES, extent_sn_next(pac),
+	    extent_state_active, zeroed, committed, EXTENT_PAI_PAC,
+	    EXTENT_IS_HEAD);
+
+	if (extent_register_no_gdump_add(tsdn, pac, edata)) {
+		edata_cache_put(tsdn, pac->edata_cache, edata);
+		goto label_err;
+	}
+
+	if (edata_committed_get(edata)) {
+		*commit = true;
+	}
+
+	edata_t *lead;
+	edata_t *trail;
+	edata_t *to_leak JEMALLOC_CC_SILENCE_INIT(NULL);
+	edata_t *to_salvage JEMALLOC_CC_SILENCE_INIT(NULL);
+
+	extent_split_interior_result_t result = extent_split_interior(tsdn,
+	    pac, ehooks, &edata, &lead, &trail, &to_leak, &to_salvage, NULL,
+	    size, alignment);
+
+	if (result == extent_split_interior_ok) {
+		if (lead != NULL) {
+			extent_record(tsdn, pac, ehooks, &pac->ecache_retained,
+			    lead);
+		}
+		if (trail != NULL) {
+			extent_record(tsdn, pac, ehooks, &pac->ecache_retained,
+			    trail);
+		}
+	} else {
+		/*
+		 * We should have allocated a sufficiently large extent; the
+		 * cant_alloc case should not occur.
+		 */
+		assert(result == extent_split_interior_error);
+		if (to_salvage != NULL) {
+			if (config_prof) {
+				extent_gdump_add(tsdn, to_salvage);
+			}
+			extent_record(tsdn, pac, ehooks, &pac->ecache_retained,
+			    to_salvage);
+		}
+		if (to_leak != NULL) {
+			extent_deregister_no_gdump_sub(tsdn, pac, to_leak);
+			extents_abandon_vm(tsdn, pac, ehooks,
+			    &pac->ecache_retained, to_leak, true);
+		}
+		goto label_err;
+	}
+
+	if (*commit && !edata_committed_get(edata)) {
+		if (extent_commit_impl(tsdn, ehooks, edata, 0,
+		    edata_size_get(edata), true)) {
+			extent_record(tsdn, pac, ehooks,
+			    &pac->ecache_retained, edata);
+			goto label_err;
+		}
+		/* A successful commit should return zeroed memory. */
+		if (config_debug) {
+			void *addr = edata_addr_get(edata);
+			size_t *p = (size_t *)(uintptr_t)addr;
+			/* Check the first page only. */
+			for (size_t i = 0; i < PAGE / sizeof(size_t); i++) {
+				assert(p[i] == 0);
+			}
+		}
+	}
+
+	/*
+	 * Increment extent_grow_next if doing so wouldn't exceed the allowed
+	 * range.
+	 */
+	/* All opportunities for failure are past. */
+	exp_grow_size_commit(&pac->exp_grow, exp_grow_skip);
+	malloc_mutex_unlock(tsdn, &pac->grow_mtx);
+
+	if (config_prof) {
+		/* Adjust gdump stats now that extent is final size. */
+		extent_gdump_add(tsdn, edata);
+	}
+	if (zero && !edata_zeroed_get(edata)) {
+		ehooks_zero(tsdn, ehooks, edata_base_get(edata),
+		    edata_size_get(edata));
+	}
+	return edata;
+label_err:
+	malloc_mutex_unlock(tsdn, &pac->grow_mtx);
+	return NULL;
+}
+
+static edata_t *
+extent_alloc_retained(tsdn_t *tsdn, pac_t *pac, ehooks_t *ehooks,
+    edata_t *expand_edata, size_t size, size_t alignment, bool zero,
+    bool *commit, bool guarded) {
+	assert(size != 0);
+	assert(alignment != 0);
+
+	malloc_mutex_lock(tsdn, &pac->grow_mtx);
+
+	edata_t *edata = extent_recycle(tsdn, pac, ehooks,
+	    &pac->ecache_retained, expand_edata, size, alignment, zero, commit,
+	    /* growing_retained */ true, guarded);
+	if (edata != NULL) {
+		malloc_mutex_unlock(tsdn, &pac->grow_mtx);
+		if (config_prof) {
+			extent_gdump_add(tsdn, edata);
+		}
+	} else if (opt_retain && expand_edata == NULL && !guarded) {
+		edata = extent_grow_retained(tsdn, pac, ehooks, size,
+		    alignment, zero, commit);
+		/* extent_grow_retained() always releases pac->grow_mtx. */
+	} else {
+		malloc_mutex_unlock(tsdn, &pac->grow_mtx);
+	}
+	malloc_mutex_assert_not_owner(tsdn, &pac->grow_mtx);
+
+	return edata;
+}
+
+static bool
+extent_coalesce(tsdn_t *tsdn, pac_t *pac, ehooks_t *ehooks, ecache_t *ecache,
+    edata_t *inner, edata_t *outer, bool forward) {
+	extent_assert_can_coalesce(inner, outer);
+	eset_remove(&ecache->eset, outer);
+
+	bool err = extent_merge_impl(tsdn, pac, ehooks,
+	    forward ? inner : outer, forward ? outer : inner,
+	    /* holding_core_locks */ true);
+	if (err) {
+		extent_deactivate_check_state_locked(tsdn, pac, ecache, outer,
+		    extent_state_merging);
+	}
+
+	return err;
+}
+
+static edata_t *
+extent_try_coalesce_impl(tsdn_t *tsdn, pac_t *pac, ehooks_t *ehooks,
+    ecache_t *ecache, edata_t *edata, bool *coalesced) {
+	assert(!edata_guarded_get(edata));
+	/*
+	 * We avoid checking / locking inactive neighbors for large size
+	 * classes, since they are eagerly coalesced on deallocation which can
+	 * cause lock contention.
+	 */
+	/*
+	 * Continue attempting to coalesce until failure, to protect against
+	 * races with other threads that are thwarted by this one.
+	 */
+	bool again;
+	do {
+		again = false;
+
+		/* Try to coalesce forward. */
+		edata_t *next = emap_try_acquire_edata_neighbor(tsdn, pac->emap,
+		    edata, EXTENT_PAI_PAC, ecache->state, /* forward */ true);
+		if (next != NULL) {
+			if (!extent_coalesce(tsdn, pac, ehooks, ecache, edata,
+			    next, true)) {
+				if (ecache->delay_coalesce) {
+					/* Do minimal coalescing. */
+					*coalesced = true;
+					return edata;
+				}
+				again = true;
+			}
+		}
+
+		/* Try to coalesce backward. */
+		edata_t *prev = emap_try_acquire_edata_neighbor(tsdn, pac->emap,
+		    edata, EXTENT_PAI_PAC, ecache->state, /* forward */ false);
+		if (prev != NULL) {
+			if (!extent_coalesce(tsdn, pac, ehooks, ecache, edata,
+			    prev, false)) {
+				edata = prev;
+				if (ecache->delay_coalesce) {
+					/* Do minimal coalescing. */
+					*coalesced = true;
+					return edata;
+				}
+				again = true;
+			}
+		}
+	} while (again);
+
+	if (ecache->delay_coalesce) {
+		*coalesced = false;
+	}
+	return edata;
+}
+
+static edata_t *
+extent_try_coalesce(tsdn_t *tsdn, pac_t *pac, ehooks_t *ehooks,
+    ecache_t *ecache, edata_t *edata, bool *coalesced) {
+	return extent_try_coalesce_impl(tsdn, pac, ehooks, ecache, edata,
+	    coalesced);
+}
+
+static edata_t *
+extent_try_coalesce_large(tsdn_t *tsdn, pac_t *pac, ehooks_t *ehooks,
+    ecache_t *ecache, edata_t *edata, bool *coalesced) {
+	return extent_try_coalesce_impl(tsdn, pac, ehooks, ecache, edata,
+	    coalesced);
+}
+
+/* Purge a single extent to retained / unmapped directly. */
+static void
+extent_maximally_purge(tsdn_t *tsdn, pac_t *pac, ehooks_t *ehooks,
+    edata_t *edata) {
+	size_t extent_size = edata_size_get(edata);
+	extent_dalloc_wrapper(tsdn, pac, ehooks, edata);
+	if (config_stats) {
+		/* Update stats accordingly. */
+		LOCKEDINT_MTX_LOCK(tsdn, *pac->stats_mtx);
+		locked_inc_u64(tsdn,
+		    LOCKEDINT_MTX(*pac->stats_mtx),
+		    &pac->stats->decay_dirty.nmadvise, 1);
+		locked_inc_u64(tsdn,
+		    LOCKEDINT_MTX(*pac->stats_mtx),
+		    &pac->stats->decay_dirty.purged,
+		    extent_size >> LG_PAGE);
+		LOCKEDINT_MTX_UNLOCK(tsdn, *pac->stats_mtx);
+		atomic_fetch_sub_zu(&pac->stats->pac_mapped, extent_size,
+		    ATOMIC_RELAXED);
+	}
+}
+
+/*
+ * Does the metadata management portions of putting an unused extent into the
+ * given ecache_t (coalesces and inserts into the eset).
+ */
+void
+extent_record(tsdn_t *tsdn, pac_t *pac, ehooks_t *ehooks, ecache_t *ecache,
+    edata_t *edata) {
+	assert((ecache->state != extent_state_dirty &&
+	    ecache->state != extent_state_muzzy) ||
+	    !edata_zeroed_get(edata));
+
+	malloc_mutex_lock(tsdn, &ecache->mtx);
+
+	emap_assert_mapped(tsdn, pac->emap, edata);
+
+	if (edata_guarded_get(edata)) {
+		goto label_skip_coalesce;
+	}
+	if (!ecache->delay_coalesce) {
+		edata = extent_try_coalesce(tsdn, pac, ehooks, ecache, edata,
+		    NULL);
+	} else if (edata_size_get(edata) >= SC_LARGE_MINCLASS) {
+		assert(ecache == &pac->ecache_dirty);
+		/* Always coalesce large extents eagerly. */
+		bool coalesced;
+		do {
+			assert(edata_state_get(edata) == extent_state_active);
+			edata = extent_try_coalesce_large(tsdn, pac, ehooks,
+			    ecache, edata, &coalesced);
+		} while (coalesced);
+		if (edata_size_get(edata) >=
+		    atomic_load_zu(&pac->oversize_threshold, ATOMIC_RELAXED)
+		    && extent_may_force_decay(pac)) {
+			/* Shortcut to purge the oversize extent eagerly. */
+			malloc_mutex_unlock(tsdn, &ecache->mtx);
+			extent_maximally_purge(tsdn, pac, ehooks, edata);
+			return;
+		}
+	}
+label_skip_coalesce:
+	extent_deactivate_locked(tsdn, pac, ecache, edata);
+
+	malloc_mutex_unlock(tsdn, &ecache->mtx);
+}
+
+void
+extent_dalloc_gap(tsdn_t *tsdn, pac_t *pac, ehooks_t *ehooks,
+    edata_t *edata) {
+	witness_assert_depth_to_rank(tsdn_witness_tsdp_get(tsdn),
+	    WITNESS_RANK_CORE, 0);
+
+	if (extent_register(tsdn, pac, edata)) {
+		edata_cache_put(tsdn, pac->edata_cache, edata);
+		return;
+	}
+	extent_dalloc_wrapper(tsdn, pac, ehooks, edata);
+}
+
+static bool
+extent_dalloc_wrapper_try(tsdn_t *tsdn, pac_t *pac, ehooks_t *ehooks,
+    edata_t *edata) {
+	bool err;
+
+	assert(edata_base_get(edata) != NULL);
+	assert(edata_size_get(edata) != 0);
+	witness_assert_depth_to_rank(tsdn_witness_tsdp_get(tsdn),
+	    WITNESS_RANK_CORE, 0);
+
+	edata_addr_set(edata, edata_base_get(edata));
+
+	/* Try to deallocate. */
+	err = ehooks_dalloc(tsdn, ehooks, edata_base_get(edata),
+	    edata_size_get(edata), edata_committed_get(edata));
+
+	if (!err) {
+		edata_cache_put(tsdn, pac->edata_cache, edata);
+	}
+
+	return err;
+}
+
+edata_t *
+extent_alloc_wrapper(tsdn_t *tsdn, pac_t *pac, ehooks_t *ehooks,
+    void *new_addr, size_t size, size_t alignment, bool zero, bool *commit,
+    bool growing_retained) {
+	witness_assert_depth_to_rank(tsdn_witness_tsdp_get(tsdn),
+	    WITNESS_RANK_CORE, growing_retained ? 1 : 0);
+
+	edata_t *edata = edata_cache_get(tsdn, pac->edata_cache);
+	if (edata == NULL) {
+		return NULL;
+	}
+	size_t palignment = ALIGNMENT_CEILING(alignment, PAGE);
+	void *addr = ehooks_alloc(tsdn, ehooks, new_addr, size, palignment,
+	    &zero, commit);
+	if (addr == NULL) {
+		edata_cache_put(tsdn, pac->edata_cache, edata);
+		return NULL;
+	}
+	edata_init(edata, ecache_ind_get(&pac->ecache_dirty), addr,
+	    size, /* slab */ false, SC_NSIZES, extent_sn_next(pac),
+	    extent_state_active, zero, *commit, EXTENT_PAI_PAC,
+	    opt_retain ? EXTENT_IS_HEAD : EXTENT_NOT_HEAD);
+	/*
+	 * Retained memory is not counted towards gdump.  Only if an extent is
+	 * allocated as a separate mapping, i.e. growing_retained is false, then
+	 * gdump should be updated.
+	 */
+	bool gdump_add = !growing_retained;
+	if (extent_register_impl(tsdn, pac, edata, gdump_add)) {
+		edata_cache_put(tsdn, pac->edata_cache, edata);
+		return NULL;
+	}
+
+	return edata;
+}
+
+void
+extent_dalloc_wrapper(tsdn_t *tsdn, pac_t *pac, ehooks_t *ehooks,
+    edata_t *edata) {
+	assert(edata_pai_get(edata) == EXTENT_PAI_PAC);
+	witness_assert_depth_to_rank(tsdn_witness_tsdp_get(tsdn),
+	    WITNESS_RANK_CORE, 0);
+
+	/* Avoid calling the default extent_dalloc unless have to. */
+	if (!ehooks_dalloc_will_fail(ehooks)) {
+		/* Remove guard pages for dalloc / unmap. */
+		if (edata_guarded_get(edata)) {
+			assert(ehooks_are_default(ehooks));
+			san_unguard_pages_two_sided(tsdn, ehooks, edata,
+			    pac->emap);
+		}
+		/*
+		 * Deregister first to avoid a race with other allocating
+		 * threads, and reregister if deallocation fails.
+		 */
+		extent_deregister(tsdn, pac, edata);
+		if (!extent_dalloc_wrapper_try(tsdn, pac, ehooks, edata)) {
+			return;
+		}
+		extent_reregister(tsdn, pac, edata);
+	}
+
+	/* Try to decommit; purge if that fails. */
+	bool zeroed;
+	if (!edata_committed_get(edata)) {
+		zeroed = true;
+	} else if (!extent_decommit_wrapper(tsdn, ehooks, edata, 0,
+	    edata_size_get(edata))) {
+		zeroed = true;
+	} else if (!ehooks_purge_forced(tsdn, ehooks, edata_base_get(edata),
+	    edata_size_get(edata), 0, edata_size_get(edata))) {
+		zeroed = true;
+	} else if (edata_state_get(edata) == extent_state_muzzy ||
+	    !ehooks_purge_lazy(tsdn, ehooks, edata_base_get(edata),
+	    edata_size_get(edata), 0, edata_size_get(edata))) {
+		zeroed = false;
+	} else {
+		zeroed = false;
+	}
+	edata_zeroed_set(edata, zeroed);
+
+	if (config_prof) {
+		extent_gdump_sub(tsdn, edata);
+	}
+
+	extent_record(tsdn, pac, ehooks, &pac->ecache_retained, edata);
+}
+
+void
+extent_destroy_wrapper(tsdn_t *tsdn, pac_t *pac, ehooks_t *ehooks,
+    edata_t *edata) {
+	assert(edata_base_get(edata) != NULL);
+	assert(edata_size_get(edata) != 0);
+	extent_state_t state = edata_state_get(edata);
+	assert(state == extent_state_retained || state == extent_state_active);
+	assert(emap_edata_is_acquired(tsdn, pac->emap, edata));
+	witness_assert_depth_to_rank(tsdn_witness_tsdp_get(tsdn),
+	    WITNESS_RANK_CORE, 0);
+
+	if (edata_guarded_get(edata)) {
+		assert(opt_retain);
+		san_unguard_pages_pre_destroy(tsdn, ehooks, edata, pac->emap);
+	}
+	edata_addr_set(edata, edata_base_get(edata));
+
+	/* Try to destroy; silently fail otherwise. */
+	ehooks_destroy(tsdn, ehooks, edata_base_get(edata),
+	    edata_size_get(edata), edata_committed_get(edata));
+
+	edata_cache_put(tsdn, pac->edata_cache, edata);
+}
+
+static bool
+extent_commit_impl(tsdn_t *tsdn, ehooks_t *ehooks, edata_t *edata,
+    size_t offset, size_t length, bool growing_retained) {
+	witness_assert_depth_to_rank(tsdn_witness_tsdp_get(tsdn),
+	    WITNESS_RANK_CORE, growing_retained ? 1 : 0);
+	bool err = ehooks_commit(tsdn, ehooks, edata_base_get(edata),
+	    edata_size_get(edata), offset, length);
+	edata_committed_set(edata, edata_committed_get(edata) || !err);
+	return err;
+}
+
+bool
+extent_commit_wrapper(tsdn_t *tsdn, ehooks_t *ehooks, edata_t *edata,
+    size_t offset, size_t length) {
+	return extent_commit_impl(tsdn, ehooks, edata, offset, length,
+	    /* growing_retained */ false);
+}
+
+bool
+extent_decommit_wrapper(tsdn_t *tsdn, ehooks_t *ehooks, edata_t *edata,
+    size_t offset, size_t length) {
+	witness_assert_depth_to_rank(tsdn_witness_tsdp_get(tsdn),
+	    WITNESS_RANK_CORE, 0);
+	bool err = ehooks_decommit(tsdn, ehooks, edata_base_get(edata),
+	    edata_size_get(edata), offset, length);
+	edata_committed_set(edata, edata_committed_get(edata) && err);
+	return err;
+}
+
+static bool
+extent_purge_lazy_impl(tsdn_t *tsdn, ehooks_t *ehooks, edata_t *edata,
+    size_t offset, size_t length, bool growing_retained) {
+	witness_assert_depth_to_rank(tsdn_witness_tsdp_get(tsdn),
+	    WITNESS_RANK_CORE, growing_retained ? 1 : 0);
+	bool err = ehooks_purge_lazy(tsdn, ehooks, edata_base_get(edata),
+	    edata_size_get(edata), offset, length);
+	return err;
+}
+
+bool
+extent_purge_lazy_wrapper(tsdn_t *tsdn, ehooks_t *ehooks, edata_t *edata,
+    size_t offset, size_t length) {
+	return extent_purge_lazy_impl(tsdn, ehooks, edata, offset,
+	    length, false);
+}
+
+static bool
+extent_purge_forced_impl(tsdn_t *tsdn, ehooks_t *ehooks, edata_t *edata,
+    size_t offset, size_t length, bool growing_retained) {
+	witness_assert_depth_to_rank(tsdn_witness_tsdp_get(tsdn),
+	    WITNESS_RANK_CORE, growing_retained ? 1 : 0);
+	bool err = ehooks_purge_forced(tsdn, ehooks, edata_base_get(edata),
+	    edata_size_get(edata), offset, length);
+	return err;
+}
+
+bool
+extent_purge_forced_wrapper(tsdn_t *tsdn, ehooks_t *ehooks, edata_t *edata,
+    size_t offset, size_t length) {
+	return extent_purge_forced_impl(tsdn, ehooks, edata, offset, length,
+	    false);
+}
+
+/*
+ * Accepts the extent to split, and the characteristics of each side of the
+ * split.  The 'a' parameters go with the 'lead' of the resulting pair of
+ * extents (the lower addressed portion of the split), and the 'b' parameters go
+ * with the trail (the higher addressed portion).  This makes 'extent' the lead,
+ * and returns the trail (except in case of error).
+ */
+static edata_t *
+extent_split_impl(tsdn_t *tsdn, pac_t *pac, ehooks_t *ehooks,
+    edata_t *edata, size_t size_a, size_t size_b, bool holding_core_locks) {
+	assert(edata_size_get(edata) == size_a + size_b);
+	/* Only the shrink path may split w/o holding core locks. */
+	if (holding_core_locks) {
+		witness_assert_positive_depth_to_rank(
+		    tsdn_witness_tsdp_get(tsdn), WITNESS_RANK_CORE);
+	} else {
+		witness_assert_depth_to_rank(tsdn_witness_tsdp_get(tsdn),
+		    WITNESS_RANK_CORE, 0);
+	}
+
+	if (ehooks_split_will_fail(ehooks)) {
+		return NULL;
+	}
+
+	edata_t *trail = edata_cache_get(tsdn, pac->edata_cache);
+	if (trail == NULL) {
+		goto label_error_a;
+	}
+
+	edata_init(trail, edata_arena_ind_get(edata),
+	    (void *)((uintptr_t)edata_base_get(edata) + size_a), size_b,
+	    /* slab */ false, SC_NSIZES, edata_sn_get(edata),
+	    edata_state_get(edata), edata_zeroed_get(edata),
+	    edata_committed_get(edata), EXTENT_PAI_PAC, EXTENT_NOT_HEAD);
+	emap_prepare_t prepare;
+	bool err = emap_split_prepare(tsdn, pac->emap, &prepare, edata,
+	    size_a, trail, size_b);
+	if (err) {
+		goto label_error_b;
+	}
+
+	/*
+	 * No need to acquire trail or edata, because: 1) trail was new (just
+	 * allocated); and 2) edata is either an active allocation (the shrink
+	 * path), or in an acquired state (extracted from the ecache on the
+	 * extent_recycle_split path).
+	 */
+	assert(emap_edata_is_acquired(tsdn, pac->emap, edata));
+	assert(emap_edata_is_acquired(tsdn, pac->emap, trail));
+
+	err = ehooks_split(tsdn, ehooks, edata_base_get(edata), size_a + size_b,
+	    size_a, size_b, edata_committed_get(edata));
+
+	if (err) {
+		goto label_error_b;
+	}
+
+	edata_size_set(edata, size_a);
+	emap_split_commit(tsdn, pac->emap, &prepare, edata, size_a, trail,
+	    size_b);
+
+	return trail;
+label_error_b:
+	edata_cache_put(tsdn, pac->edata_cache, trail);
+label_error_a:
+	return NULL;
+}
+
+edata_t *
+extent_split_wrapper(tsdn_t *tsdn, pac_t *pac, ehooks_t *ehooks, edata_t *edata,
+    size_t size_a, size_t size_b, bool holding_core_locks) {
+	return extent_split_impl(tsdn, pac, ehooks, edata, size_a, size_b,
+	    holding_core_locks);
+}
+
+static bool
+extent_merge_impl(tsdn_t *tsdn, pac_t *pac, ehooks_t *ehooks, edata_t *a,
+    edata_t *b, bool holding_core_locks) {
+	/* Only the expanding path may merge w/o holding ecache locks. */
+	if (holding_core_locks) {
+		witness_assert_positive_depth_to_rank(
+		    tsdn_witness_tsdp_get(tsdn), WITNESS_RANK_CORE);
+	} else {
+		witness_assert_depth_to_rank(tsdn_witness_tsdp_get(tsdn),
+		    WITNESS_RANK_CORE, 0);
+	}
+
+	assert(edata_base_get(a) < edata_base_get(b));
+	assert(edata_arena_ind_get(a) == edata_arena_ind_get(b));
+	assert(edata_arena_ind_get(a) == ehooks_ind_get(ehooks));
+	emap_assert_mapped(tsdn, pac->emap, a);
+	emap_assert_mapped(tsdn, pac->emap, b);
+
+	bool err = ehooks_merge(tsdn, ehooks, edata_base_get(a),
+	    edata_size_get(a), edata_base_get(b), edata_size_get(b),
+	    edata_committed_get(a));
+
+	if (err) {
+		return true;
+	}
+
+	/*
+	 * The rtree writes must happen while all the relevant elements are
+	 * owned, so the following code uses decomposed helper functions rather
+	 * than extent_{,de}register() to do things in the right order.
+	 */
+	emap_prepare_t prepare;
+	emap_merge_prepare(tsdn, pac->emap, &prepare, a, b);
+
+	assert(edata_state_get(a) == extent_state_active ||
+	    edata_state_get(a) == extent_state_merging);
+	edata_state_set(a, extent_state_active);
+	edata_size_set(a, edata_size_get(a) + edata_size_get(b));
+	edata_sn_set(a, (edata_sn_get(a) < edata_sn_get(b)) ?
+	    edata_sn_get(a) : edata_sn_get(b));
+	edata_zeroed_set(a, edata_zeroed_get(a) && edata_zeroed_get(b));
+
+	emap_merge_commit(tsdn, pac->emap, &prepare, a, b);
+
+	edata_cache_put(tsdn, pac->edata_cache, b);
+
+	return false;
+}
+
+bool
+extent_merge_wrapper(tsdn_t *tsdn, pac_t *pac, ehooks_t *ehooks,
+    edata_t *a, edata_t *b) {
+	return extent_merge_impl(tsdn, pac, ehooks, a, b,
+	    /* holding_core_locks */ false);
+}
+
+bool
+extent_commit_zero(tsdn_t *tsdn, ehooks_t *ehooks, edata_t *edata,
+    bool commit, bool zero, bool growing_retained) {
+	witness_assert_depth_to_rank(tsdn_witness_tsdp_get(tsdn),
+	    WITNESS_RANK_CORE, growing_retained ? 1 : 0);
+
+	if (commit && !edata_committed_get(edata)) {
+		if (extent_commit_impl(tsdn, ehooks, edata, 0,
+		    edata_size_get(edata), growing_retained)) {
+			return true;
+		}
+	}
+	if (zero && !edata_zeroed_get(edata)) {
+		void *addr = edata_base_get(edata);
+		size_t size = edata_size_get(edata);
+		ehooks_zero(tsdn, ehooks, addr, size);
+	}
+	return false;
+}
+
+bool
+extent_boot(void) {
+	assert(sizeof(slab_data_t) >= sizeof(e_prof_info_t));
+
+	if (have_dss) {
+		extent_dss_boot();
+	}
+
+	return false;
+}
diff --git a/deps/jemalloc/src/extent_dss.c b/deps/jemalloc/src/extent_dss.c
new file mode 100644
index 0000000..9a35bac
--- /dev/null
+++ b/deps/jemalloc/src/extent_dss.c
@@ -0,0 +1,277 @@
+#include "jemalloc/internal/jemalloc_preamble.h"
+#include "jemalloc/internal/jemalloc_internal_includes.h"
+
+#include "jemalloc/internal/assert.h"
+#include "jemalloc/internal/extent_dss.h"
+#include "jemalloc/internal/spin.h"
+
+/******************************************************************************/
+/* Data. */
+
+const char	*opt_dss = DSS_DEFAULT;
+
+const char	*dss_prec_names[] = {
+	"disabled",
+	"primary",
+	"secondary",
+	"N/A"
+};
+
+/*
+ * Current dss precedence default, used when creating new arenas.  NB: This is
+ * stored as unsigned rather than dss_prec_t because in principle there's no
+ * guarantee that sizeof(dss_prec_t) is the same as sizeof(unsigned), and we use
+ * atomic operations to synchronize the setting.
+ */
+static atomic_u_t	dss_prec_default = ATOMIC_INIT(
+    (unsigned)DSS_PREC_DEFAULT);
+
+/* Base address of the DSS. */
+static void		*dss_base;
+/* Atomic boolean indicating whether a thread is currently extending DSS. */
+static atomic_b_t	dss_extending;
+/* Atomic boolean indicating whether the DSS is exhausted. */
+static atomic_b_t	dss_exhausted;
+/* Atomic current upper limit on DSS addresses. */
+static atomic_p_t	dss_max;
+
+/******************************************************************************/
+
+static void *
+extent_dss_sbrk(intptr_t increment) {
+#ifdef JEMALLOC_DSS
+	return sbrk(increment);
+#else
+	not_implemented();
+	return NULL;
+#endif
+}
+
+dss_prec_t
+extent_dss_prec_get(void) {
+	dss_prec_t ret;
+
+	if (!have_dss) {
+		return dss_prec_disabled;
+	}
+	ret = (dss_prec_t)atomic_load_u(&dss_prec_default, ATOMIC_ACQUIRE);
+	return ret;
+}
+
+bool
+extent_dss_prec_set(dss_prec_t dss_prec) {
+	if (!have_dss) {
+		return (dss_prec != dss_prec_disabled);
+	}
+	atomic_store_u(&dss_prec_default, (unsigned)dss_prec, ATOMIC_RELEASE);
+	return false;
+}
+
+static void
+extent_dss_extending_start(void) {
+	spin_t spinner = SPIN_INITIALIZER;
+	while (true) {
+		bool expected = false;
+		if (atomic_compare_exchange_weak_b(&dss_extending, &expected,
+		    true, ATOMIC_ACQ_REL, ATOMIC_RELAXED)) {
+			break;
+		}
+		spin_adaptive(&spinner);
+	}
+}
+
+static void
+extent_dss_extending_finish(void) {
+	assert(atomic_load_b(&dss_extending, ATOMIC_RELAXED));
+
+	atomic_store_b(&dss_extending, false, ATOMIC_RELEASE);
+}
+
+static void *
+extent_dss_max_update(void *new_addr) {
+	/*
+	 * Get the current end of the DSS as max_cur and assure that dss_max is
+	 * up to date.
+	 */
+	void *max_cur = extent_dss_sbrk(0);
+	if (max_cur == (void *)-1) {
+		return NULL;
+	}
+	atomic_store_p(&dss_max, max_cur, ATOMIC_RELEASE);
+	/* Fixed new_addr can only be supported if it is at the edge of DSS. */
+	if (new_addr != NULL && max_cur != new_addr) {
+		return NULL;
+	}
+	return max_cur;
+}
+
+void *
+extent_alloc_dss(tsdn_t *tsdn, arena_t *arena, void *new_addr, size_t size,
+    size_t alignment, bool *zero, bool *commit) {
+	edata_t *gap;
+
+	cassert(have_dss);
+	assert(size > 0);
+	assert(alignment == ALIGNMENT_CEILING(alignment, PAGE));
+
+	/*
+	 * sbrk() uses a signed increment argument, so take care not to
+	 * interpret a large allocation request as a negative increment.
+	 */
+	if ((intptr_t)size < 0) {
+		return NULL;
+	}
+
+	gap = edata_cache_get(tsdn, &arena->pa_shard.edata_cache);
+	if (gap == NULL) {
+		return NULL;
+	}
+
+	extent_dss_extending_start();
+	if (!atomic_load_b(&dss_exhausted, ATOMIC_ACQUIRE)) {
+		/*
+		 * The loop is necessary to recover from races with other
+		 * threads that are using the DSS for something other than
+		 * malloc.
+		 */
+		while (true) {
+			void *max_cur = extent_dss_max_update(new_addr);
+			if (max_cur == NULL) {
+				goto label_oom;
+			}
+
+			bool head_state = opt_retain ? EXTENT_IS_HEAD :
+			    EXTENT_NOT_HEAD;
+			/*
+			 * Compute how much page-aligned gap space (if any) is
+			 * necessary to satisfy alignment.  This space can be
+			 * recycled for later use.
+			 */
+			void *gap_addr_page = (void *)(PAGE_CEILING(
+			    (uintptr_t)max_cur));
+			void *ret = (void *)ALIGNMENT_CEILING(
+			    (uintptr_t)gap_addr_page, alignment);
+			size_t gap_size_page = (uintptr_t)ret -
+			    (uintptr_t)gap_addr_page;
+			if (gap_size_page != 0) {
+				edata_init(gap, arena_ind_get(arena),
+				    gap_addr_page, gap_size_page, false,
+				    SC_NSIZES, extent_sn_next(
+					&arena->pa_shard.pac),
+				    extent_state_active, false, true,
+				    EXTENT_PAI_PAC, head_state);
+			}
+			/*
+			 * Compute the address just past the end of the desired
+			 * allocation space.
+			 */
+			void *dss_next = (void *)((uintptr_t)ret + size);
+			if ((uintptr_t)ret < (uintptr_t)max_cur ||
+			    (uintptr_t)dss_next < (uintptr_t)max_cur) {
+				goto label_oom; /* Wrap-around. */
+			}
+			/* Compute the increment, including subpage bytes. */
+			void *gap_addr_subpage = max_cur;
+			size_t gap_size_subpage = (uintptr_t)ret -
+			    (uintptr_t)gap_addr_subpage;
+			intptr_t incr = gap_size_subpage + size;
+
+			assert((uintptr_t)max_cur + incr == (uintptr_t)ret +
+			    size);
+
+			/* Try to allocate. */
+			void *dss_prev = extent_dss_sbrk(incr);
+			if (dss_prev == max_cur) {
+				/* Success. */
+				atomic_store_p(&dss_max, dss_next,
+				    ATOMIC_RELEASE);
+				extent_dss_extending_finish();
+
+				if (gap_size_page != 0) {
+					ehooks_t *ehooks = arena_get_ehooks(
+					    arena);
+					extent_dalloc_gap(tsdn,
+					    &arena->pa_shard.pac, ehooks, gap);
+				} else {
+					edata_cache_put(tsdn,
+					    &arena->pa_shard.edata_cache, gap);
+				}
+				if (!*commit) {
+					*commit = pages_decommit(ret, size);
+				}
+				if (*zero && *commit) {
+					edata_t edata = {0};
+					ehooks_t *ehooks = arena_get_ehooks(
+					    arena);
+
+					edata_init(&edata,
+					    arena_ind_get(arena), ret, size,
+					    size, false, SC_NSIZES,
+					    extent_state_active, false, true,
+					    EXTENT_PAI_PAC, head_state);
+					if (extent_purge_forced_wrapper(tsdn,
+					    ehooks, &edata, 0, size)) {
+						memset(ret, 0, size);
+					}
+				}
+				return ret;
+			}
+			/*
+			 * Failure, whether due to OOM or a race with a raw
+			 * sbrk() call from outside the allocator.
+			 */
+			if (dss_prev == (void *)-1) {
+				/* OOM. */
+				atomic_store_b(&dss_exhausted, true,
+				    ATOMIC_RELEASE);
+				goto label_oom;
+			}
+		}
+	}
+label_oom:
+	extent_dss_extending_finish();
+	edata_cache_put(tsdn, &arena->pa_shard.edata_cache, gap);
+	return NULL;
+}
+
+static bool
+extent_in_dss_helper(void *addr, void *max) {
+	return ((uintptr_t)addr >= (uintptr_t)dss_base && (uintptr_t)addr <
+	    (uintptr_t)max);
+}
+
+bool
+extent_in_dss(void *addr) {
+	cassert(have_dss);
+
+	return extent_in_dss_helper(addr, atomic_load_p(&dss_max,
+	    ATOMIC_ACQUIRE));
+}
+
+bool
+extent_dss_mergeable(void *addr_a, void *addr_b) {
+	void *max;
+
+	cassert(have_dss);
+
+	if ((uintptr_t)addr_a < (uintptr_t)dss_base && (uintptr_t)addr_b <
+	    (uintptr_t)dss_base) {
+		return true;
+	}
+
+	max = atomic_load_p(&dss_max, ATOMIC_ACQUIRE);
+	return (extent_in_dss_helper(addr_a, max) ==
+	    extent_in_dss_helper(addr_b, max));
+}
+
+void
+extent_dss_boot(void) {
+	cassert(have_dss);
+
+	dss_base = extent_dss_sbrk(0);
+	atomic_store_b(&dss_extending, false, ATOMIC_RELAXED);
+	atomic_store_b(&dss_exhausted, dss_base == (void *)-1, ATOMIC_RELAXED);
+	atomic_store_p(&dss_max, dss_base, ATOMIC_RELAXED);
+}
+
+/******************************************************************************/
diff --git a/deps/jemalloc/src/extent_mmap.c b/deps/jemalloc/src/extent_mmap.c
new file mode 100644
index 0000000..5f0ee2d
--- /dev/null
+++ b/deps/jemalloc/src/extent_mmap.c
@@ -0,0 +1,41 @@
+#include "jemalloc/internal/jemalloc_preamble.h"
+#include "jemalloc/internal/jemalloc_internal_includes.h"
+
+#include "jemalloc/internal/assert.h"
+#include "jemalloc/internal/extent_mmap.h"
+
+/******************************************************************************/
+/* Data. */
+
+bool	opt_retain =
+#ifdef JEMALLOC_RETAIN
+    true
+#else
+    false
+#endif
+    ;
+
+/******************************************************************************/
+
+void *
+extent_alloc_mmap(void *new_addr, size_t size, size_t alignment, bool *zero,
+    bool *commit) {
+	assert(alignment == ALIGNMENT_CEILING(alignment, PAGE));
+	void *ret = pages_map(new_addr, size, alignment, commit);
+	if (ret == NULL) {
+		return NULL;
+	}
+	assert(ret != NULL);
+	if (*commit) {
+		*zero = true;
+	}
+	return ret;
+}
+
+bool
+extent_dalloc_mmap(void *addr, size_t size) {
+	if (!opt_retain) {
+		pages_unmap(addr, size);
+	}
+	return opt_retain;
+}
diff --git a/deps/jemalloc/src/fxp.c b/deps/jemalloc/src/fxp.c
new file mode 100644
index 0000000..96585f0
--- /dev/null
+++ b/deps/jemalloc/src/fxp.c
@@ -0,0 +1,124 @@
+#include "jemalloc/internal/jemalloc_preamble.h"
+#include "jemalloc/internal/jemalloc_internal_includes.h"
+
+#include "jemalloc/internal/fxp.h"
+
+static bool
+fxp_isdigit(char c) {
+	return '0' <= c && c <= '9';
+}
+
+bool
+fxp_parse(fxp_t *result, const char *str, char **end) {
+	/*
+	 * Using malloc_strtoumax in this method isn't as handy as you might
+	 * expect (I tried). In the fractional part, significant leading zeros
+	 * mean that you still need to do your own parsing, now with trickier
+	 * math.  In the integer part, the casting (uintmax_t to uint32_t)
+	 * forces more reasoning about bounds than just checking for overflow as
+	 * we parse.
+	 */
+	uint32_t integer_part = 0;
+
+	const char *cur = str;
+
+	/* The string must start with a digit or a decimal point. */
+	if (*cur != '.' && !fxp_isdigit(*cur)) {
+		return true;
+	}
+
+	while ('0' <= *cur && *cur <= '9') {
+		integer_part *= 10;
+		integer_part += *cur - '0';
+		if (integer_part >= (1U << 16)) {
+			return true;
+		}
+		cur++;
+	}
+
+	/*
+	 * We've parsed all digits at the beginning of the string, without
+	 * overflow.  Either we're done, or there's a fractional part.
+	 */
+	if (*cur != '.') {
+		*result = (integer_part << 16);
+		if (end != NULL) {
+			*end = (char *)cur;
+		}
+		return false;
+	}
+
+	/* There's a fractional part. */
+	cur++;
+	if (!fxp_isdigit(*cur)) {
+		/* Shouldn't end on the decimal point. */
+		return true;
+	}
+
+	/*
+	 * We use a lot of precision for the fractional part, even though we'll
+	 * discard most of it; this lets us get exact values for the important
+	 * special case where the denominator is a small power of 2 (for
+	 * instance, 1/512 == 0.001953125 is exactly representable even with
+	 * only 16 bits of fractional precision).  We need to left-shift by 16
+	 * before dividing so we pick the number of digits to be
+	 * floor(log(2**48)) = 14.
+	 */
+	uint64_t fractional_part = 0;
+	uint64_t frac_div = 1;
+	for (int i = 0; i < FXP_FRACTIONAL_PART_DIGITS; i++) {
+		fractional_part *= 10;
+		frac_div *= 10;
+		if (fxp_isdigit(*cur)) {
+			fractional_part += *cur - '0';
+			cur++;
+		}
+	}
+	/*
+	 * We only parse the first maxdigits characters, but we can still ignore
+	 * any digits after that.
+	 */
+	while (fxp_isdigit(*cur)) {
+		cur++;
+	}
+
+	assert(fractional_part < frac_div);
+	uint32_t fractional_repr = (uint32_t)(
+	    (fractional_part << 16) / frac_div);
+
+	/* Success! */
+	*result = (integer_part << 16) + fractional_repr;
+	if (end != NULL) {
+		*end = (char *)cur;
+	}
+	return false;
+}
+
+void
+fxp_print(fxp_t a, char buf[FXP_BUF_SIZE]) {
+	uint32_t integer_part = fxp_round_down(a);
+	uint32_t fractional_part = (a & ((1U << 16) - 1));
+
+	int leading_fraction_zeros = 0;
+	uint64_t fraction_digits = fractional_part;
+	for (int i = 0; i < FXP_FRACTIONAL_PART_DIGITS; i++) {
+		if (fraction_digits < (1U << 16)
+		    && fraction_digits * 10 >= (1U << 16)) {
+			leading_fraction_zeros = i;
+		}
+		fraction_digits *= 10;
+	}
+	fraction_digits >>= 16;
+	while (fraction_digits > 0 && fraction_digits % 10 == 0) {
+		fraction_digits /= 10;
+	}
+
+	size_t printed = malloc_snprintf(buf, FXP_BUF_SIZE, "%"FMTu32".",
+	    integer_part);
+	for (int i = 0; i < leading_fraction_zeros; i++) {
+		buf[printed] = '0';
+		printed++;
+	}
+	malloc_snprintf(&buf[printed], FXP_BUF_SIZE - printed, "%"FMTu64,
+	    fraction_digits);
+}
diff --git a/deps/jemalloc/src/hook.c b/deps/jemalloc/src/hook.c
new file mode 100644
index 0000000..493edbb
--- /dev/null
+++ b/deps/jemalloc/src/hook.c
@@ -0,0 +1,195 @@
+#include "jemalloc/internal/jemalloc_preamble.h"
+
+#include "jemalloc/internal/hook.h"
+
+#include "jemalloc/internal/atomic.h"
+#include "jemalloc/internal/mutex.h"
+#include "jemalloc/internal/seq.h"
+
+typedef struct hooks_internal_s hooks_internal_t;
+struct hooks_internal_s {
+	hooks_t hooks;
+	bool in_use;
+};
+
+seq_define(hooks_internal_t, hooks)
+
+static atomic_u_t nhooks = ATOMIC_INIT(0);
+static seq_hooks_t hooks[HOOK_MAX];
+static malloc_mutex_t hooks_mu;
+
+bool
+hook_boot() {
+	return malloc_mutex_init(&hooks_mu, "hooks", WITNESS_RANK_HOOK,
+	    malloc_mutex_rank_exclusive);
+}
+
+static void *
+hook_install_locked(hooks_t *to_install) {
+	hooks_internal_t hooks_internal;
+	for (int i = 0; i < HOOK_MAX; i++) {
+		bool success = seq_try_load_hooks(&hooks_internal, &hooks[i]);
+		/* We hold mu; no concurrent access. */
+		assert(success);
+		if (!hooks_internal.in_use) {
+			hooks_internal.hooks = *to_install;
+			hooks_internal.in_use = true;
+			seq_store_hooks(&hooks[i], &hooks_internal);
+			atomic_store_u(&nhooks,
+			    atomic_load_u(&nhooks, ATOMIC_RELAXED) + 1,
+			    ATOMIC_RELAXED);
+			return &hooks[i];
+		}
+	}
+	return NULL;
+}
+
+void *
+hook_install(tsdn_t *tsdn, hooks_t *to_install) {
+	malloc_mutex_lock(tsdn, &hooks_mu);
+	void *ret = hook_install_locked(to_install);
+	if (ret != NULL) {
+		tsd_global_slow_inc(tsdn);
+	}
+	malloc_mutex_unlock(tsdn, &hooks_mu);
+	return ret;
+}
+
+static void
+hook_remove_locked(seq_hooks_t *to_remove) {
+	hooks_internal_t hooks_internal;
+	bool success = seq_try_load_hooks(&hooks_internal, to_remove);
+	/* We hold mu; no concurrent access. */
+	assert(success);
+	/* Should only remove hooks that were added. */
+	assert(hooks_internal.in_use);
+	hooks_internal.in_use = false;
+	seq_store_hooks(to_remove, &hooks_internal);
+	atomic_store_u(&nhooks, atomic_load_u(&nhooks, ATOMIC_RELAXED) - 1,
+	    ATOMIC_RELAXED);
+}
+
+void
+hook_remove(tsdn_t *tsdn, void *opaque) {
+	if (config_debug) {
+		char *hooks_begin = (char *)&hooks[0];
+		char *hooks_end = (char *)&hooks[HOOK_MAX];
+		char *hook = (char *)opaque;
+		assert(hooks_begin <= hook && hook < hooks_end
+		    && (hook - hooks_begin) % sizeof(seq_hooks_t) == 0);
+	}
+	malloc_mutex_lock(tsdn, &hooks_mu);
+	hook_remove_locked((seq_hooks_t *)opaque);
+	tsd_global_slow_dec(tsdn);
+	malloc_mutex_unlock(tsdn, &hooks_mu);
+}
+
+#define FOR_EACH_HOOK_BEGIN(hooks_internal_ptr)				\
+for (int for_each_hook_counter = 0;					\
+    for_each_hook_counter < HOOK_MAX;					\
+    for_each_hook_counter++) {						\
+	bool for_each_hook_success = seq_try_load_hooks(		\
+	    (hooks_internal_ptr), &hooks[for_each_hook_counter]);	\
+	if (!for_each_hook_success) {					\
+		continue;						\
+	}								\
+	if (!(hooks_internal_ptr)->in_use) {				\
+		continue;						\
+	}
+#define FOR_EACH_HOOK_END						\
+}
+
+static bool *
+hook_reentrantp() {
+	/*
+	 * We prevent user reentrancy within hooks.  This is basically just a
+	 * thread-local bool that triggers an early-exit.
+	 *
+	 * We don't fold in_hook into reentrancy.  There are two reasons for
+	 * this:
+	 * - Right now, we turn on reentrancy during things like extent hook
+	 *   execution.  Allocating during extent hooks is not officially
+	 *   supported, but we don't want to break it for the time being.  These
+	 *   sorts of allocations should probably still be hooked, though.
+	 * - If a hook allocates, we may want it to be relatively fast (after
+	 *   all, it executes on every allocator operation).  Turning on
+	 *   reentrancy is a fairly heavyweight mode (disabling tcache,
+	 *   redirecting to arena 0, etc.).  It's possible we may one day want
+	 *   to turn on reentrant mode here, if it proves too difficult to keep
+	 *   this working.  But that's fairly easy for us to see; OTOH, people
+	 *   not using hooks because they're too slow is easy for us to miss.
+	 *
+	 * The tricky part is
+	 * that this code might get invoked even if we don't have access to tsd.
+	 * This function mimics getting a pointer to thread-local data, except
+	 * that it might secretly return a pointer to some global data if we
+	 * know that the caller will take the early-exit path.
+	 * If we return a bool that indicates that we are reentrant, then the
+	 * caller will go down the early exit path, leaving the global
+	 * untouched.
+	 */
+	static bool in_hook_global = true;
+	tsdn_t *tsdn = tsdn_fetch();
+	bool *in_hook = tsdn_in_hookp_get(tsdn);
+	if (in_hook!= NULL) {
+		return in_hook;
+	}
+	return &in_hook_global;
+}
+
+#define HOOK_PROLOGUE							\
+	if (likely(atomic_load_u(&nhooks, ATOMIC_RELAXED) == 0)) {	\
+		return;							\
+	}								\
+	bool *in_hook = hook_reentrantp();				\
+	if (*in_hook) {							\
+		return;							\
+	}								\
+	*in_hook = true;
+
+#define HOOK_EPILOGUE							\
+	*in_hook = false;
+
+void
+hook_invoke_alloc(hook_alloc_t type, void *result, uintptr_t result_raw,
+    uintptr_t args_raw[3]) {
+	HOOK_PROLOGUE
+
+	hooks_internal_t hook;
+	FOR_EACH_HOOK_BEGIN(&hook)
+		hook_alloc h = hook.hooks.alloc_hook;
+		if (h != NULL) {
+			h(hook.hooks.extra, type, result, result_raw, args_raw);
+		}
+	FOR_EACH_HOOK_END
+
+	HOOK_EPILOGUE
+}
+
+void
+hook_invoke_dalloc(hook_dalloc_t type, void *address, uintptr_t args_raw[3]) {
+	HOOK_PROLOGUE
+	hooks_internal_t hook;
+	FOR_EACH_HOOK_BEGIN(&hook)
+		hook_dalloc h = hook.hooks.dalloc_hook;
+		if (h != NULL) {
+			h(hook.hooks.extra, type, address, args_raw);
+		}
+	FOR_EACH_HOOK_END
+	HOOK_EPILOGUE
+}
+
+void
+hook_invoke_expand(hook_expand_t type, void *address, size_t old_usize,
+    size_t new_usize, uintptr_t result_raw, uintptr_t args_raw[4]) {
+	HOOK_PROLOGUE
+	hooks_internal_t hook;
+	FOR_EACH_HOOK_BEGIN(&hook)
+		hook_expand h = hook.hooks.expand_hook;
+		if (h != NULL) {
+			h(hook.hooks.extra, type, address, old_usize, new_usize,
+			    result_raw, args_raw);
+		}
+	FOR_EACH_HOOK_END
+	HOOK_EPILOGUE
+}
diff --git a/deps/jemalloc/src/hpa.c b/deps/jemalloc/src/hpa.c
new file mode 100644
index 0000000..7e2aeba
--- /dev/null
+++ b/deps/jemalloc/src/hpa.c
@@ -0,0 +1,1044 @@
+#include "jemalloc/internal/jemalloc_preamble.h"
+#include "jemalloc/internal/jemalloc_internal_includes.h"
+
+#include "jemalloc/internal/hpa.h"
+
+#include "jemalloc/internal/fb.h"
+#include "jemalloc/internal/witness.h"
+
+#define HPA_EDEN_SIZE (128 * HUGEPAGE)
+
+static edata_t *hpa_alloc(tsdn_t *tsdn, pai_t *self, size_t size,
+    size_t alignment, bool zero, bool guarded, bool frequent_reuse,
+    bool *deferred_work_generated);
+static size_t hpa_alloc_batch(tsdn_t *tsdn, pai_t *self, size_t size,
+    size_t nallocs, edata_list_active_t *results, bool *deferred_work_generated);
+static bool hpa_expand(tsdn_t *tsdn, pai_t *self, edata_t *edata,
+    size_t old_size, size_t new_size, bool zero, bool *deferred_work_generated);
+static bool hpa_shrink(tsdn_t *tsdn, pai_t *self, edata_t *edata,
+    size_t old_size, size_t new_size, bool *deferred_work_generated);
+static void hpa_dalloc(tsdn_t *tsdn, pai_t *self, edata_t *edata,
+    bool *deferred_work_generated);
+static void hpa_dalloc_batch(tsdn_t *tsdn, pai_t *self,
+    edata_list_active_t *list, bool *deferred_work_generated);
+static uint64_t hpa_time_until_deferred_work(tsdn_t *tsdn, pai_t *self);
+
+bool
+hpa_supported() {
+#ifdef _WIN32
+	/*
+	 * At least until the API and implementation is somewhat settled, we
+	 * don't want to try to debug the VM subsystem on the hardest-to-test
+	 * platform.
+	 */
+	return false;
+#endif
+	if (!pages_can_hugify) {
+		return false;
+	}
+	/*
+	 * We fundamentally rely on a address-space-hungry growth strategy for
+	 * hugepages.
+	 */
+	if (LG_SIZEOF_PTR != 3) {
+		return false;
+	}
+	/*
+	 * If we couldn't detect the value of HUGEPAGE, HUGEPAGE_PAGES becomes
+	 * this sentinel value -- see the comment in pages.h.
+	 */
+	if (HUGEPAGE_PAGES == 1) {
+		return false;
+	}
+	return true;
+}
+
+static void
+hpa_do_consistency_checks(hpa_shard_t *shard) {
+	assert(shard->base != NULL);
+}
+
+bool
+hpa_central_init(hpa_central_t *central, base_t *base, const hpa_hooks_t *hooks) {
+	/* malloc_conf processing should have filtered out these cases. */
+	assert(hpa_supported());
+	bool err;
+	err = malloc_mutex_init(&central->grow_mtx, "hpa_central_grow",
+	    WITNESS_RANK_HPA_CENTRAL_GROW, malloc_mutex_rank_exclusive);
+	if (err) {
+		return true;
+	}
+	err = malloc_mutex_init(&central->mtx, "hpa_central",
+	    WITNESS_RANK_HPA_CENTRAL, malloc_mutex_rank_exclusive);
+	if (err) {
+		return true;
+	}
+	central->base = base;
+	central->eden = NULL;
+	central->eden_len = 0;
+	central->age_counter = 0;
+	central->hooks = *hooks;
+	return false;
+}
+
+static hpdata_t *
+hpa_alloc_ps(tsdn_t *tsdn, hpa_central_t *central) {
+	return (hpdata_t *)base_alloc(tsdn, central->base, sizeof(hpdata_t),
+	    CACHELINE);
+}
+
+hpdata_t *
+hpa_central_extract(tsdn_t *tsdn, hpa_central_t *central, size_t size,
+    bool *oom) {
+	/* Don't yet support big allocations; these should get filtered out. */
+	assert(size <= HUGEPAGE);
+	/*
+	 * Should only try to extract from the central allocator if the local
+	 * shard is exhausted.  We should hold the grow_mtx on that shard.
+	 */
+	witness_assert_positive_depth_to_rank(
+	    tsdn_witness_tsdp_get(tsdn), WITNESS_RANK_HPA_SHARD_GROW);
+
+	malloc_mutex_lock(tsdn, &central->grow_mtx);
+	*oom = false;
+
+	hpdata_t *ps = NULL;
+
+	/* Is eden a perfect fit? */
+	if (central->eden != NULL && central->eden_len == HUGEPAGE) {
+		ps = hpa_alloc_ps(tsdn, central);
+		if (ps == NULL) {
+			*oom = true;
+			malloc_mutex_unlock(tsdn, &central->grow_mtx);
+			return NULL;
+		}
+		hpdata_init(ps, central->eden, central->age_counter++);
+		central->eden = NULL;
+		central->eden_len = 0;
+		malloc_mutex_unlock(tsdn, &central->grow_mtx);
+		return ps;
+	}
+
+	/*
+	 * We're about to try to allocate from eden by splitting.  If eden is
+	 * NULL, we have to allocate it too.  Otherwise, we just have to
+	 * allocate an edata_t for the new psset.
+	 */
+	if (central->eden == NULL) {
+		/*
+		 * During development, we're primarily concerned with systems
+		 * with overcommit.  Eventually, we should be more careful here.
+		 */
+		bool commit = true;
+		/* Allocate address space, bailing if we fail. */
+		void *new_eden = pages_map(NULL, HPA_EDEN_SIZE, HUGEPAGE,
+		    &commit);
+		if (new_eden == NULL) {
+			*oom = true;
+			malloc_mutex_unlock(tsdn, &central->grow_mtx);
+			return NULL;
+		}
+		ps = hpa_alloc_ps(tsdn, central);
+		if (ps == NULL) {
+			pages_unmap(new_eden, HPA_EDEN_SIZE);
+			*oom = true;
+			malloc_mutex_unlock(tsdn, &central->grow_mtx);
+			return NULL;
+		}
+		central->eden = new_eden;
+		central->eden_len = HPA_EDEN_SIZE;
+	} else {
+		/* Eden is already nonempty; only need an edata for ps. */
+		ps = hpa_alloc_ps(tsdn, central);
+		if (ps == NULL) {
+			*oom = true;
+			malloc_mutex_unlock(tsdn, &central->grow_mtx);
+			return NULL;
+		}
+	}
+	assert(ps != NULL);
+	assert(central->eden != NULL);
+	assert(central->eden_len > HUGEPAGE);
+	assert(central->eden_len % HUGEPAGE == 0);
+	assert(HUGEPAGE_ADDR2BASE(central->eden) == central->eden);
+
+	hpdata_init(ps, central->eden, central->age_counter++);
+
+	char *eden_char = (char *)central->eden;
+	eden_char += HUGEPAGE;
+	central->eden = (void *)eden_char;
+	central->eden_len -= HUGEPAGE;
+
+	malloc_mutex_unlock(tsdn, &central->grow_mtx);
+
+	return ps;
+}
+
+bool
+hpa_shard_init(hpa_shard_t *shard, hpa_central_t *central, emap_t *emap,
+    base_t *base, edata_cache_t *edata_cache, unsigned ind,
+    const hpa_shard_opts_t *opts) {
+	/* malloc_conf processing should have filtered out these cases. */
+	assert(hpa_supported());
+	bool err;
+	err = malloc_mutex_init(&shard->grow_mtx, "hpa_shard_grow",
+	    WITNESS_RANK_HPA_SHARD_GROW, malloc_mutex_rank_exclusive);
+	if (err) {
+		return true;
+	}
+	err = malloc_mutex_init(&shard->mtx, "hpa_shard",
+	    WITNESS_RANK_HPA_SHARD, malloc_mutex_rank_exclusive);
+	if (err) {
+		return true;
+	}
+
+	assert(edata_cache != NULL);
+	shard->central = central;
+	shard->base = base;
+	edata_cache_fast_init(&shard->ecf, edata_cache);
+	psset_init(&shard->psset);
+	shard->age_counter = 0;
+	shard->ind = ind;
+	shard->emap = emap;
+
+	shard->opts = *opts;
+
+	shard->npending_purge = 0;
+	nstime_init_zero(&shard->last_purge);
+
+	shard->stats.npurge_passes = 0;
+	shard->stats.npurges = 0;
+	shard->stats.nhugifies = 0;
+	shard->stats.ndehugifies = 0;
+
+	/*
+	 * Fill these in last, so that if an hpa_shard gets used despite
+	 * initialization failing, we'll at least crash instead of just
+	 * operating on corrupted data.
+	 */
+	shard->pai.alloc = &hpa_alloc;
+	shard->pai.alloc_batch = &hpa_alloc_batch;
+	shard->pai.expand = &hpa_expand;
+	shard->pai.shrink = &hpa_shrink;
+	shard->pai.dalloc = &hpa_dalloc;
+	shard->pai.dalloc_batch = &hpa_dalloc_batch;
+	shard->pai.time_until_deferred_work = &hpa_time_until_deferred_work;
+
+	hpa_do_consistency_checks(shard);
+
+	return false;
+}
+
+/*
+ * Note that the stats functions here follow the usual stats naming conventions;
+ * "merge" obtains the stats from some live object of instance, while "accum"
+ * only combines the stats from one stats objet to another.  Hence the lack of
+ * locking here.
+ */
+static void
+hpa_shard_nonderived_stats_accum(hpa_shard_nonderived_stats_t *dst,
+    hpa_shard_nonderived_stats_t *src) {
+	dst->npurge_passes += src->npurge_passes;
+	dst->npurges += src->npurges;
+	dst->nhugifies += src->nhugifies;
+	dst->ndehugifies += src->ndehugifies;
+}
+
+void
+hpa_shard_stats_accum(hpa_shard_stats_t *dst, hpa_shard_stats_t *src) {
+	psset_stats_accum(&dst->psset_stats, &src->psset_stats);
+	hpa_shard_nonderived_stats_accum(&dst->nonderived_stats,
+	    &src->nonderived_stats);
+}
+
+void
+hpa_shard_stats_merge(tsdn_t *tsdn, hpa_shard_t *shard,
+    hpa_shard_stats_t *dst) {
+	hpa_do_consistency_checks(shard);
+
+	malloc_mutex_lock(tsdn, &shard->grow_mtx);
+	malloc_mutex_lock(tsdn, &shard->mtx);
+	psset_stats_accum(&dst->psset_stats, &shard->psset.stats);
+	hpa_shard_nonderived_stats_accum(&dst->nonderived_stats, &shard->stats);
+	malloc_mutex_unlock(tsdn, &shard->mtx);
+	malloc_mutex_unlock(tsdn, &shard->grow_mtx);
+}
+
+static bool
+hpa_good_hugification_candidate(hpa_shard_t *shard, hpdata_t *ps) {
+	/*
+	 * Note that this needs to be >= rather than just >, because of the
+	 * important special case in which the hugification threshold is exactly
+	 * HUGEPAGE.
+	 */
+	return hpdata_nactive_get(ps) * PAGE
+	    >= shard->opts.hugification_threshold;
+}
+
+static size_t
+hpa_adjusted_ndirty(tsdn_t *tsdn, hpa_shard_t *shard) {
+	malloc_mutex_assert_owner(tsdn, &shard->mtx);
+	return psset_ndirty(&shard->psset) - shard->npending_purge;
+}
+
+static size_t
+hpa_ndirty_max(tsdn_t *tsdn, hpa_shard_t *shard) {
+	malloc_mutex_assert_owner(tsdn, &shard->mtx);
+	if (shard->opts.dirty_mult == (fxp_t)-1) {
+		return (size_t)-1;
+	}
+	return fxp_mul_frac(psset_nactive(&shard->psset),
+	    shard->opts.dirty_mult);
+}
+
+static bool
+hpa_hugify_blocked_by_ndirty(tsdn_t *tsdn, hpa_shard_t *shard) {
+	malloc_mutex_assert_owner(tsdn, &shard->mtx);
+	hpdata_t *to_hugify = psset_pick_hugify(&shard->psset);
+	if (to_hugify == NULL) {
+		return false;
+	}
+	return hpa_adjusted_ndirty(tsdn, shard)
+	    + hpdata_nretained_get(to_hugify) > hpa_ndirty_max(tsdn, shard);
+}
+
+static bool
+hpa_should_purge(tsdn_t *tsdn, hpa_shard_t *shard) {
+	malloc_mutex_assert_owner(tsdn, &shard->mtx);
+	if (hpa_adjusted_ndirty(tsdn, shard) > hpa_ndirty_max(tsdn, shard)) {
+		return true;
+	}
+	if (hpa_hugify_blocked_by_ndirty(tsdn, shard)) {
+		return true;
+	}
+	return false;
+}
+
+static void
+hpa_update_purge_hugify_eligibility(tsdn_t *tsdn, hpa_shard_t *shard,
+    hpdata_t *ps) {
+	malloc_mutex_assert_owner(tsdn, &shard->mtx);
+	if (hpdata_changing_state_get(ps)) {
+		hpdata_purge_allowed_set(ps, false);
+		hpdata_disallow_hugify(ps);
+		return;
+	}
+	/*
+	 * Hugepages are distinctly costly to purge, so try to avoid it unless
+	 * they're *particularly* full of dirty pages.  Eventually, we should
+	 * use a smarter / more dynamic heuristic for situations where we have
+	 * to manually hugify.
+	 *
+	 * In situations where we don't manually hugify, this problem is
+	 * reduced.  The "bad" situation we're trying to avoid is one's that's
+	 * common in some Linux configurations (where both enabled and defrag
+	 * are set to madvise) that can lead to long latency spikes on the first
+	 * access after a hugification.  The ideal policy in such configurations
+	 * is probably time-based for both purging and hugifying; only hugify a
+	 * hugepage if it's met the criteria for some extended period of time,
+	 * and only dehugify it if it's failed to meet the criteria for an
+	 * extended period of time.  When background threads are on, we should
+	 * try to take this hit on one of them, as well.
+	 *
+	 * I think the ideal setting is THP always enabled, and defrag set to
+	 * deferred; in that case we don't need any explicit calls on the
+	 * allocator's end at all; we just try to pack allocations in a
+	 * hugepage-friendly manner and let the OS hugify in the background.
+	 */
+	hpdata_purge_allowed_set(ps, hpdata_ndirty_get(ps) > 0);
+	if (hpa_good_hugification_candidate(shard, ps)
+	    && !hpdata_huge_get(ps)) {
+		nstime_t now;
+		shard->central->hooks.curtime(&now, /* first_reading */ true);
+		hpdata_allow_hugify(ps, now);
+	}
+	/*
+	 * Once a hugepage has become eligible for hugification, we don't mark
+	 * it as ineligible just because it stops meeting the criteria (this
+	 * could lead to situations where a hugepage that spends most of its
+	 * time meeting the criteria never quite getting hugified if there are
+	 * intervening deallocations).  The idea is that the hugification delay
+	 * will allow them to get purged, reseting their "hugify-allowed" bit.
+	 * If they don't get purged, then the hugification isn't hurting and
+	 * might help.  As an exception, we don't hugify hugepages that are now
+	 * empty; it definitely doesn't help there until the hugepage gets
+	 * reused, which is likely not for a while.
+	 */
+	if (hpdata_nactive_get(ps) == 0) {
+		hpdata_disallow_hugify(ps);
+	}
+}
+
+static bool
+hpa_shard_has_deferred_work(tsdn_t *tsdn, hpa_shard_t *shard) {
+	malloc_mutex_assert_owner(tsdn, &shard->mtx);
+	hpdata_t *to_hugify = psset_pick_hugify(&shard->psset);
+	return to_hugify != NULL || hpa_should_purge(tsdn, shard);
+}
+
+/* Returns whether or not we purged anything. */
+static bool
+hpa_try_purge(tsdn_t *tsdn, hpa_shard_t *shard) {
+	malloc_mutex_assert_owner(tsdn, &shard->mtx);
+
+	hpdata_t *to_purge = psset_pick_purge(&shard->psset);
+	if (to_purge == NULL) {
+		return false;
+	}
+	assert(hpdata_purge_allowed_get(to_purge));
+	assert(!hpdata_changing_state_get(to_purge));
+
+	/*
+	 * Don't let anyone else purge or hugify this page while
+	 * we're purging it (allocations and deallocations are
+	 * OK).
+	 */
+	psset_update_begin(&shard->psset, to_purge);
+	assert(hpdata_alloc_allowed_get(to_purge));
+	hpdata_mid_purge_set(to_purge, true);
+	hpdata_purge_allowed_set(to_purge, false);
+	hpdata_disallow_hugify(to_purge);
+	/*
+	 * Unlike with hugification (where concurrent
+	 * allocations are allowed), concurrent allocation out
+	 * of a hugepage being purged is unsafe; we might hand
+	 * out an extent for an allocation and then purge it
+	 * (clearing out user data).
+	 */
+	hpdata_alloc_allowed_set(to_purge, false);
+	psset_update_end(&shard->psset, to_purge);
+
+	/* Gather all the metadata we'll need during the purge. */
+	bool dehugify = hpdata_huge_get(to_purge);
+	hpdata_purge_state_t purge_state;
+	size_t num_to_purge = hpdata_purge_begin(to_purge, &purge_state);
+
+	shard->npending_purge += num_to_purge;
+
+	malloc_mutex_unlock(tsdn, &shard->mtx);
+
+	/* Actually do the purging, now that the lock is dropped. */
+	if (dehugify) {
+		shard->central->hooks.dehugify(hpdata_addr_get(to_purge),
+		    HUGEPAGE);
+	}
+	size_t total_purged = 0;
+	uint64_t purges_this_pass = 0;
+	void *purge_addr;
+	size_t purge_size;
+	while (hpdata_purge_next(to_purge, &purge_state, &purge_addr,
+	    &purge_size)) {
+		total_purged += purge_size;
+		assert(total_purged <= HUGEPAGE);
+		purges_this_pass++;
+		shard->central->hooks.purge(purge_addr, purge_size);
+	}
+
+	malloc_mutex_lock(tsdn, &shard->mtx);
+	/* The shard updates */
+	shard->npending_purge -= num_to_purge;
+	shard->stats.npurge_passes++;
+	shard->stats.npurges += purges_this_pass;
+	shard->central->hooks.curtime(&shard->last_purge,
+	    /* first_reading */ false);
+	if (dehugify) {
+		shard->stats.ndehugifies++;
+	}
+
+	/* The hpdata updates. */
+	psset_update_begin(&shard->psset, to_purge);
+	if (dehugify) {
+		hpdata_dehugify(to_purge);
+	}
+	hpdata_purge_end(to_purge, &purge_state);
+	hpdata_mid_purge_set(to_purge, false);
+
+	hpdata_alloc_allowed_set(to_purge, true);
+	hpa_update_purge_hugify_eligibility(tsdn, shard, to_purge);
+
+	psset_update_end(&shard->psset, to_purge);
+
+	return true;
+}
+
+/* Returns whether or not we hugified anything. */
+static bool
+hpa_try_hugify(tsdn_t *tsdn, hpa_shard_t *shard) {
+	malloc_mutex_assert_owner(tsdn, &shard->mtx);
+
+	if (hpa_hugify_blocked_by_ndirty(tsdn, shard)) {
+		return false;
+	}
+
+	hpdata_t *to_hugify = psset_pick_hugify(&shard->psset);
+	if (to_hugify == NULL) {
+		return false;
+	}
+	assert(hpdata_hugify_allowed_get(to_hugify));
+	assert(!hpdata_changing_state_get(to_hugify));
+
+	/* Make sure that it's been hugifiable for long enough. */
+	nstime_t time_hugify_allowed = hpdata_time_hugify_allowed(to_hugify);
+	uint64_t millis = shard->central->hooks.ms_since(&time_hugify_allowed);
+	if (millis < shard->opts.hugify_delay_ms) {
+		return false;
+	}
+
+	/*
+	 * Don't let anyone else purge or hugify this page while
+	 * we're hugifying it (allocations and deallocations are
+	 * OK).
+	 */
+	psset_update_begin(&shard->psset, to_hugify);
+	hpdata_mid_hugify_set(to_hugify, true);
+	hpdata_purge_allowed_set(to_hugify, false);
+	hpdata_disallow_hugify(to_hugify);
+	assert(hpdata_alloc_allowed_get(to_hugify));
+	psset_update_end(&shard->psset, to_hugify);
+
+	malloc_mutex_unlock(tsdn, &shard->mtx);
+
+	shard->central->hooks.hugify(hpdata_addr_get(to_hugify), HUGEPAGE);
+
+	malloc_mutex_lock(tsdn, &shard->mtx);
+	shard->stats.nhugifies++;
+
+	psset_update_begin(&shard->psset, to_hugify);
+	hpdata_hugify(to_hugify);
+	hpdata_mid_hugify_set(to_hugify, false);
+	hpa_update_purge_hugify_eligibility(tsdn, shard, to_hugify);
+	psset_update_end(&shard->psset, to_hugify);
+
+	return true;
+}
+
+/*
+ * Execution of deferred work is forced if it's triggered by an explicit
+ * hpa_shard_do_deferred_work() call.
+ */
+static void
+hpa_shard_maybe_do_deferred_work(tsdn_t *tsdn, hpa_shard_t *shard,
+    bool forced) {
+	malloc_mutex_assert_owner(tsdn, &shard->mtx);
+	if (!forced && shard->opts.deferral_allowed) {
+		return;
+	}
+	/*
+	 * If we're on a background thread, do work so long as there's work to
+	 * be done.  Otherwise, bound latency to not be *too* bad by doing at
+	 * most a small fixed number of operations.
+	 */
+	bool hugified = false;
+	bool purged = false;
+	size_t max_ops = (forced ? (size_t)-1 : 16);
+	size_t nops = 0;
+	do {
+		/*
+		 * Always purge before hugifying, to make sure we get some
+		 * ability to hit our quiescence targets.
+		 */
+		purged = false;
+		while (hpa_should_purge(tsdn, shard) && nops < max_ops) {
+			purged = hpa_try_purge(tsdn, shard);
+			if (purged) {
+				nops++;
+			}
+		}
+		hugified = hpa_try_hugify(tsdn, shard);
+		if (hugified) {
+			nops++;
+		}
+		malloc_mutex_assert_owner(tsdn, &shard->mtx);
+		malloc_mutex_assert_owner(tsdn, &shard->mtx);
+	} while ((hugified || purged) && nops < max_ops);
+}
+
+static edata_t *
+hpa_try_alloc_one_no_grow(tsdn_t *tsdn, hpa_shard_t *shard, size_t size,
+    bool *oom) {
+	bool err;
+	edata_t *edata = edata_cache_fast_get(tsdn, &shard->ecf);
+	if (edata == NULL) {
+		*oom = true;
+		return NULL;
+	}
+
+	hpdata_t *ps = psset_pick_alloc(&shard->psset, size);
+	if (ps == NULL) {
+		edata_cache_fast_put(tsdn, &shard->ecf, edata);
+		return NULL;
+	}
+
+	psset_update_begin(&shard->psset, ps);
+
+	if (hpdata_empty(ps)) {
+		/*
+		 * If the pageslab used to be empty, treat it as though it's
+		 * brand new for fragmentation-avoidance purposes; what we're
+		 * trying to approximate is the age of the allocations *in* that
+		 * pageslab, and the allocations in the new pageslab are
+		 * definitionally the youngest in this hpa shard.
+		 */
+		hpdata_age_set(ps, shard->age_counter++);
+	}
+
+	void *addr = hpdata_reserve_alloc(ps, size);
+	edata_init(edata, shard->ind, addr, size, /* slab */ false,
+	    SC_NSIZES, /* sn */ hpdata_age_get(ps), extent_state_active,
+	    /* zeroed */ false, /* committed */ true, EXTENT_PAI_HPA,
+	    EXTENT_NOT_HEAD);
+	edata_ps_set(edata, ps);
+
+	/*
+	 * This could theoretically be moved outside of the critical section,
+	 * but that introduces the potential for a race.  Without the lock, the
+	 * (initially nonempty, since this is the reuse pathway) pageslab we
+	 * allocated out of could become otherwise empty while the lock is
+	 * dropped.  This would force us to deal with a pageslab eviction down
+	 * the error pathway, which is a pain.
+	 */
+	err = emap_register_boundary(tsdn, shard->emap, edata,
+	    SC_NSIZES, /* slab */ false);
+	if (err) {
+		hpdata_unreserve(ps, edata_addr_get(edata),
+		    edata_size_get(edata));
+		/*
+		 * We should arguably reset dirty state here, but this would
+		 * require some sort of prepare + commit functionality that's a
+		 * little much to deal with for now.
+		 *
+		 * We don't have a do_deferred_work down this pathway, on the
+		 * principle that we didn't *really* affect shard state (we
+		 * tweaked the stats, but our tweaks weren't really accurate).
+		 */
+		psset_update_end(&shard->psset, ps);
+		edata_cache_fast_put(tsdn, &shard->ecf, edata);
+		*oom = true;
+		return NULL;
+	}
+
+	hpa_update_purge_hugify_eligibility(tsdn, shard, ps);
+	psset_update_end(&shard->psset, ps);
+	return edata;
+}
+
+static size_t
+hpa_try_alloc_batch_no_grow(tsdn_t *tsdn, hpa_shard_t *shard, size_t size,
+    bool *oom, size_t nallocs, edata_list_active_t *results,
+    bool *deferred_work_generated) {
+	malloc_mutex_lock(tsdn, &shard->mtx);
+	size_t nsuccess = 0;
+	for (; nsuccess < nallocs; nsuccess++) {
+		edata_t *edata = hpa_try_alloc_one_no_grow(tsdn, shard, size,
+		    oom);
+		if (edata == NULL) {
+			break;
+		}
+		edata_list_active_append(results, edata);
+	}
+
+	hpa_shard_maybe_do_deferred_work(tsdn, shard, /* forced */ false);
+	*deferred_work_generated = hpa_shard_has_deferred_work(tsdn, shard);
+	malloc_mutex_unlock(tsdn, &shard->mtx);
+	return nsuccess;
+}
+
+static size_t
+hpa_alloc_batch_psset(tsdn_t *tsdn, hpa_shard_t *shard, size_t size,
+    size_t nallocs, edata_list_active_t *results,
+    bool *deferred_work_generated) {
+	assert(size <= shard->opts.slab_max_alloc);
+	bool oom = false;
+
+	size_t nsuccess = hpa_try_alloc_batch_no_grow(tsdn, shard, size, &oom,
+	    nallocs, results, deferred_work_generated);
+
+	if (nsuccess == nallocs || oom) {
+		return nsuccess;
+	}
+
+	/*
+	 * We didn't OOM, but weren't able to fill everything requested of us;
+	 * try to grow.
+	 */
+	malloc_mutex_lock(tsdn, &shard->grow_mtx);
+	/*
+	 * Check for grow races; maybe some earlier thread expanded the psset
+	 * in between when we dropped the main mutex and grabbed the grow mutex.
+	 */
+	nsuccess += hpa_try_alloc_batch_no_grow(tsdn, shard, size, &oom,
+	    nallocs - nsuccess, results, deferred_work_generated);
+	if (nsuccess == nallocs || oom) {
+		malloc_mutex_unlock(tsdn, &shard->grow_mtx);
+		return nsuccess;
+	}
+
+	/*
+	 * Note that we don't hold shard->mtx here (while growing);
+	 * deallocations (and allocations of smaller sizes) may still succeed
+	 * while we're doing this potentially expensive system call.
+	 */
+	hpdata_t *ps = hpa_central_extract(tsdn, shard->central, size, &oom);
+	if (ps == NULL) {
+		malloc_mutex_unlock(tsdn, &shard->grow_mtx);
+		return nsuccess;
+	}
+
+	/*
+	 * We got the pageslab; allocate from it.  This does an unlock followed
+	 * by a lock on the same mutex, and holds the grow mutex while doing
+	 * deferred work, but this is an uncommon path; the simplicity is worth
+	 * it.
+	 */
+	malloc_mutex_lock(tsdn, &shard->mtx);
+	psset_insert(&shard->psset, ps);
+	malloc_mutex_unlock(tsdn, &shard->mtx);
+
+	nsuccess += hpa_try_alloc_batch_no_grow(tsdn, shard, size, &oom,
+	    nallocs - nsuccess, results, deferred_work_generated);
+	/*
+	 * Drop grow_mtx before doing deferred work; other threads blocked on it
+	 * should be allowed to proceed while we're working.
+	 */
+	malloc_mutex_unlock(tsdn, &shard->grow_mtx);
+
+	return nsuccess;
+}
+
+static hpa_shard_t *
+hpa_from_pai(pai_t *self) {
+	assert(self->alloc = &hpa_alloc);
+	assert(self->expand = &hpa_expand);
+	assert(self->shrink = &hpa_shrink);
+	assert(self->dalloc = &hpa_dalloc);
+	return (hpa_shard_t *)self;
+}
+
+static size_t
+hpa_alloc_batch(tsdn_t *tsdn, pai_t *self, size_t size, size_t nallocs,
+    edata_list_active_t *results, bool *deferred_work_generated) {
+	assert(nallocs > 0);
+	assert((size & PAGE_MASK) == 0);
+	witness_assert_depth_to_rank(tsdn_witness_tsdp_get(tsdn),
+	    WITNESS_RANK_CORE, 0);
+	hpa_shard_t *shard = hpa_from_pai(self);
+
+	if (size > shard->opts.slab_max_alloc) {
+		return 0;
+	}
+
+	size_t nsuccess = hpa_alloc_batch_psset(tsdn, shard, size, nallocs,
+	    results, deferred_work_generated);
+
+	witness_assert_depth_to_rank(tsdn_witness_tsdp_get(tsdn),
+	    WITNESS_RANK_CORE, 0);
+
+	/*
+	 * Guard the sanity checks with config_debug because the loop cannot be
+	 * proven non-circular by the compiler, even if everything within the
+	 * loop is optimized away.
+	 */
+	if (config_debug) {
+		edata_t *edata;
+		ql_foreach(edata, &results->head, ql_link_active) {
+			emap_assert_mapped(tsdn, shard->emap, edata);
+			assert(edata_pai_get(edata) == EXTENT_PAI_HPA);
+			assert(edata_state_get(edata) == extent_state_active);
+			assert(edata_arena_ind_get(edata) == shard->ind);
+			assert(edata_szind_get_maybe_invalid(edata) ==
+			    SC_NSIZES);
+			assert(!edata_slab_get(edata));
+			assert(edata_committed_get(edata));
+			assert(edata_base_get(edata) == edata_addr_get(edata));
+			assert(edata_base_get(edata) != NULL);
+		}
+	}
+	return nsuccess;
+}
+
+static edata_t *
+hpa_alloc(tsdn_t *tsdn, pai_t *self, size_t size, size_t alignment, bool zero,
+    bool guarded, bool frequent_reuse, bool *deferred_work_generated) {
+	assert((size & PAGE_MASK) == 0);
+	assert(!guarded);
+	witness_assert_depth_to_rank(tsdn_witness_tsdp_get(tsdn),
+	    WITNESS_RANK_CORE, 0);
+
+	/* We don't handle alignment or zeroing for now. */
+	if (alignment > PAGE || zero) {
+		return NULL;
+	}
+	/*
+	 * An alloc with alignment == PAGE and zero == false is equivalent to a
+	 * batch alloc of 1.  Just do that, so we can share code.
+	 */
+	edata_list_active_t results;
+	edata_list_active_init(&results);
+	size_t nallocs = hpa_alloc_batch(tsdn, self, size, /* nallocs */ 1,
+	    &results, deferred_work_generated);
+	assert(nallocs == 0 || nallocs == 1);
+	edata_t *edata = edata_list_active_first(&results);
+	return edata;
+}
+
+static bool
+hpa_expand(tsdn_t *tsdn, pai_t *self, edata_t *edata, size_t old_size,
+    size_t new_size, bool zero, bool *deferred_work_generated) {
+	/* Expand not yet supported. */
+	return true;
+}
+
+static bool
+hpa_shrink(tsdn_t *tsdn, pai_t *self, edata_t *edata,
+    size_t old_size, size_t new_size, bool *deferred_work_generated) {
+	/* Shrink not yet supported. */
+	return true;
+}
+
+static void
+hpa_dalloc_prepare_unlocked(tsdn_t *tsdn, hpa_shard_t *shard, edata_t *edata) {
+	malloc_mutex_assert_not_owner(tsdn, &shard->mtx);
+
+	assert(edata_pai_get(edata) == EXTENT_PAI_HPA);
+	assert(edata_state_get(edata) == extent_state_active);
+	assert(edata_arena_ind_get(edata) == shard->ind);
+	assert(edata_szind_get_maybe_invalid(edata) == SC_NSIZES);
+	assert(edata_committed_get(edata));
+	assert(edata_base_get(edata) != NULL);
+
+	/*
+	 * Another thread shouldn't be trying to touch the metadata of an
+	 * allocation being freed.  The one exception is a merge attempt from a
+	 * lower-addressed PAC extent; in this case we have a nominal race on
+	 * the edata metadata bits, but in practice the fact that the PAI bits
+	 * are different will prevent any further access.  The race is bad, but
+	 * benign in practice, and the long term plan is to track enough state
+	 * in the rtree to prevent these merge attempts in the first place.
+	 */
+	edata_addr_set(edata, edata_base_get(edata));
+	edata_zeroed_set(edata, false);
+	emap_deregister_boundary(tsdn, shard->emap, edata);
+}
+
+static void
+hpa_dalloc_locked(tsdn_t *tsdn, hpa_shard_t *shard, edata_t *edata) {
+	malloc_mutex_assert_owner(tsdn, &shard->mtx);
+
+	/*
+	 * Release the metadata early, to avoid having to remember to do it
+	 * while we're also doing tricky purging logic.  First, we need to grab
+	 * a few bits of metadata from it.
+	 *
+	 * Note that the shard mutex protects ps's metadata too; it wouldn't be
+	 * correct to try to read most information out of it without the lock.
+	 */
+	hpdata_t *ps = edata_ps_get(edata);
+	/* Currently, all edatas come from pageslabs. */
+	assert(ps != NULL);
+	void *unreserve_addr = edata_addr_get(edata);
+	size_t unreserve_size = edata_size_get(edata);
+	edata_cache_fast_put(tsdn, &shard->ecf, edata);
+
+	psset_update_begin(&shard->psset, ps);
+	hpdata_unreserve(ps, unreserve_addr, unreserve_size);
+	hpa_update_purge_hugify_eligibility(tsdn, shard, ps);
+	psset_update_end(&shard->psset, ps);
+}
+
+static void
+hpa_dalloc_batch(tsdn_t *tsdn, pai_t *self, edata_list_active_t *list,
+    bool *deferred_work_generated) {
+	hpa_shard_t *shard = hpa_from_pai(self);
+
+	edata_t *edata;
+	ql_foreach(edata, &list->head, ql_link_active) {
+		hpa_dalloc_prepare_unlocked(tsdn, shard, edata);
+	}
+
+	malloc_mutex_lock(tsdn, &shard->mtx);
+	/* Now, remove from the list. */
+	while ((edata = edata_list_active_first(list)) != NULL) {
+		edata_list_active_remove(list, edata);
+		hpa_dalloc_locked(tsdn, shard, edata);
+	}
+	hpa_shard_maybe_do_deferred_work(tsdn, shard, /* forced */ false);
+	*deferred_work_generated =
+	    hpa_shard_has_deferred_work(tsdn, shard);
+
+	malloc_mutex_unlock(tsdn, &shard->mtx);
+}
+
+static void
+hpa_dalloc(tsdn_t *tsdn, pai_t *self, edata_t *edata,
+    bool *deferred_work_generated) {
+	assert(!edata_guarded_get(edata));
+	/* Just a dalloc_batch of size 1; this lets us share logic. */
+	edata_list_active_t dalloc_list;
+	edata_list_active_init(&dalloc_list);
+	edata_list_active_append(&dalloc_list, edata);
+	hpa_dalloc_batch(tsdn, self, &dalloc_list, deferred_work_generated);
+}
+
+/*
+ * Calculate time until either purging or hugification ought to happen.
+ * Called by background threads.
+ */
+static uint64_t
+hpa_time_until_deferred_work(tsdn_t *tsdn, pai_t *self) {
+	hpa_shard_t *shard = hpa_from_pai(self);
+	uint64_t time_ns = BACKGROUND_THREAD_DEFERRED_MAX;
+
+	malloc_mutex_lock(tsdn, &shard->mtx);
+
+	hpdata_t *to_hugify = psset_pick_hugify(&shard->psset);
+	if (to_hugify != NULL) {
+		nstime_t time_hugify_allowed =
+		    hpdata_time_hugify_allowed(to_hugify);
+		uint64_t since_hugify_allowed_ms =
+		    shard->central->hooks.ms_since(&time_hugify_allowed);
+		/*
+		 * If not enough time has passed since hugification was allowed,
+		 * sleep for the rest.
+		 */
+		if (since_hugify_allowed_ms < shard->opts.hugify_delay_ms) {
+			time_ns = shard->opts.hugify_delay_ms -
+			    since_hugify_allowed_ms;
+			time_ns *= 1000 * 1000;
+		} else {
+			malloc_mutex_unlock(tsdn, &shard->mtx);
+			return BACKGROUND_THREAD_DEFERRED_MIN;
+		}
+	}
+
+	if (hpa_should_purge(tsdn, shard)) {
+		/*
+		 * If we haven't purged before, no need to check interval
+		 * between purges. Simply purge as soon as possible.
+		 */
+		if (shard->stats.npurge_passes == 0) {
+			malloc_mutex_unlock(tsdn, &shard->mtx);
+			return BACKGROUND_THREAD_DEFERRED_MIN;
+		}
+		uint64_t since_last_purge_ms = shard->central->hooks.ms_since(
+		    &shard->last_purge);
+
+		if (since_last_purge_ms < shard->opts.min_purge_interval_ms) {
+			uint64_t until_purge_ns;
+			until_purge_ns = shard->opts.min_purge_interval_ms -
+			    since_last_purge_ms;
+			until_purge_ns *= 1000 * 1000;
+
+			if (until_purge_ns < time_ns) {
+				time_ns = until_purge_ns;
+			}
+		} else {
+			time_ns = BACKGROUND_THREAD_DEFERRED_MIN;
+		}
+	}
+	malloc_mutex_unlock(tsdn, &shard->mtx);
+	return time_ns;
+}
+
+void
+hpa_shard_disable(tsdn_t *tsdn, hpa_shard_t *shard) {
+	hpa_do_consistency_checks(shard);
+
+	malloc_mutex_lock(tsdn, &shard->mtx);
+	edata_cache_fast_disable(tsdn, &shard->ecf);
+	malloc_mutex_unlock(tsdn, &shard->mtx);
+}
+
+static void
+hpa_shard_assert_stats_empty(psset_bin_stats_t *bin_stats) {
+	assert(bin_stats->npageslabs == 0);
+	assert(bin_stats->nactive == 0);
+}
+
+static void
+hpa_assert_empty(tsdn_t *tsdn, hpa_shard_t *shard, psset_t *psset) {
+	malloc_mutex_assert_owner(tsdn, &shard->mtx);
+	for (int huge = 0; huge <= 1; huge++) {
+		hpa_shard_assert_stats_empty(&psset->stats.full_slabs[huge]);
+		for (pszind_t i = 0; i < PSSET_NPSIZES; i++) {
+			hpa_shard_assert_stats_empty(
+			    &psset->stats.nonfull_slabs[i][huge]);
+		}
+	}
+}
+
+void
+hpa_shard_destroy(tsdn_t *tsdn, hpa_shard_t *shard) {
+	hpa_do_consistency_checks(shard);
+	/*
+	 * By the time we're here, the arena code should have dalloc'd all the
+	 * active extents, which means we should have eventually evicted
+	 * everything from the psset, so it shouldn't be able to serve even a
+	 * 1-page allocation.
+	 */
+	if (config_debug) {
+		malloc_mutex_lock(tsdn, &shard->mtx);
+		hpa_assert_empty(tsdn, shard, &shard->psset);
+		malloc_mutex_unlock(tsdn, &shard->mtx);
+	}
+	hpdata_t *ps;
+	while ((ps = psset_pick_alloc(&shard->psset, PAGE)) != NULL) {
+		/* There should be no allocations anywhere. */
+		assert(hpdata_empty(ps));
+		psset_remove(&shard->psset, ps);
+		shard->central->hooks.unmap(hpdata_addr_get(ps), HUGEPAGE);
+	}
+}
+
+void
+hpa_shard_set_deferral_allowed(tsdn_t *tsdn, hpa_shard_t *shard,
+    bool deferral_allowed) {
+	hpa_do_consistency_checks(shard);
+
+	malloc_mutex_lock(tsdn, &shard->mtx);
+	bool deferral_previously_allowed = shard->opts.deferral_allowed;
+	shard->opts.deferral_allowed = deferral_allowed;
+	if (deferral_previously_allowed && !deferral_allowed) {
+		hpa_shard_maybe_do_deferred_work(tsdn, shard,
+		    /* forced */ true);
+	}
+	malloc_mutex_unlock(tsdn, &shard->mtx);
+}
+
+void
+hpa_shard_do_deferred_work(tsdn_t *tsdn, hpa_shard_t *shard) {
+	hpa_do_consistency_checks(shard);
+
+	malloc_mutex_lock(tsdn, &shard->mtx);
+	hpa_shard_maybe_do_deferred_work(tsdn, shard, /* forced */ true);
+	malloc_mutex_unlock(tsdn, &shard->mtx);
+}
+
+void
+hpa_shard_prefork3(tsdn_t *tsdn, hpa_shard_t *shard) {
+	hpa_do_consistency_checks(shard);
+
+	malloc_mutex_prefork(tsdn, &shard->grow_mtx);
+}
+
+void
+hpa_shard_prefork4(tsdn_t *tsdn, hpa_shard_t *shard) {
+	hpa_do_consistency_checks(shard);
+
+	malloc_mutex_prefork(tsdn, &shard->mtx);
+}
+
+void
+hpa_shard_postfork_parent(tsdn_t *tsdn, hpa_shard_t *shard) {
+	hpa_do_consistency_checks(shard);
+
+	malloc_mutex_postfork_parent(tsdn, &shard->grow_mtx);
+	malloc_mutex_postfork_parent(tsdn, &shard->mtx);
+}
+
+void
+hpa_shard_postfork_child(tsdn_t *tsdn, hpa_shard_t *shard) {
+	hpa_do_consistency_checks(shard);
+
+	malloc_mutex_postfork_child(tsdn, &shard->grow_mtx);
+	malloc_mutex_postfork_child(tsdn, &shard->mtx);
+}
diff --git a/deps/jemalloc/src/hpa_hooks.c b/deps/jemalloc/src/hpa_hooks.c
new file mode 100644
index 0000000..ade581e
--- /dev/null
+++ b/deps/jemalloc/src/hpa_hooks.c
@@ -0,0 +1,63 @@
+#include "jemalloc/internal/jemalloc_preamble.h"
+#include "jemalloc/internal/jemalloc_internal_includes.h"
+
+#include "jemalloc/internal/hpa_hooks.h"
+
+static void *hpa_hooks_map(size_t size);
+static void hpa_hooks_unmap(void *ptr, size_t size);
+static void hpa_hooks_purge(void *ptr, size_t size);
+static void hpa_hooks_hugify(void *ptr, size_t size);
+static void hpa_hooks_dehugify(void *ptr, size_t size);
+static void hpa_hooks_curtime(nstime_t *r_nstime, bool first_reading);
+static uint64_t hpa_hooks_ms_since(nstime_t *past_nstime);
+
+hpa_hooks_t hpa_hooks_default = {
+	&hpa_hooks_map,
+	&hpa_hooks_unmap,
+	&hpa_hooks_purge,
+	&hpa_hooks_hugify,
+	&hpa_hooks_dehugify,
+	&hpa_hooks_curtime,
+	&hpa_hooks_ms_since
+};
+
+static void *
+hpa_hooks_map(size_t size) {
+	bool commit = true;
+	return pages_map(NULL, size, HUGEPAGE, &commit);
+}
+
+static void
+hpa_hooks_unmap(void *ptr, size_t size) {
+	pages_unmap(ptr, size);
+}
+
+static void
+hpa_hooks_purge(void *ptr, size_t size) {
+	pages_purge_forced(ptr, size);
+}
+
+static void
+hpa_hooks_hugify(void *ptr, size_t size) {
+	bool err = pages_huge(ptr, size);
+	(void)err;
+}
+
+static void
+hpa_hooks_dehugify(void *ptr, size_t size) {
+	bool err = pages_nohuge(ptr, size);
+	(void)err;
+}
+
+static void
+hpa_hooks_curtime(nstime_t *r_nstime, bool first_reading) {
+	if (first_reading) {
+		nstime_init_zero(r_nstime);
+	}
+	nstime_update(r_nstime);
+}
+
+static uint64_t
+hpa_hooks_ms_since(nstime_t *past_nstime) {
+	return nstime_ns_since(past_nstime) / 1000 / 1000;
+}
diff --git a/deps/jemalloc/src/hpdata.c b/deps/jemalloc/src/hpdata.c
new file mode 100644
index 0000000..e7d7294
--- /dev/null
+++ b/deps/jemalloc/src/hpdata.c
@@ -0,0 +1,325 @@
+#include "jemalloc/internal/jemalloc_preamble.h"
+#include "jemalloc/internal/jemalloc_internal_includes.h"
+
+#include "jemalloc/internal/hpdata.h"
+
+static int
+hpdata_age_comp(const hpdata_t *a, const hpdata_t *b) {
+	uint64_t a_age = hpdata_age_get(a);
+	uint64_t b_age = hpdata_age_get(b);
+	/*
+	 * hpdata ages are operation counts in the psset; no two should be the
+	 * same.
+	 */
+	assert(a_age != b_age);
+	return (a_age > b_age) - (a_age < b_age);
+}
+
+ph_gen(, hpdata_age_heap, hpdata_t, age_link, hpdata_age_comp)
+
+void
+hpdata_init(hpdata_t *hpdata, void *addr, uint64_t age) {
+	hpdata_addr_set(hpdata, addr);
+	hpdata_age_set(hpdata, age);
+	hpdata->h_huge = false;
+	hpdata->h_alloc_allowed = true;
+	hpdata->h_in_psset_alloc_container = false;
+	hpdata->h_purge_allowed = false;
+	hpdata->h_hugify_allowed = false;
+	hpdata->h_in_psset_hugify_container = false;
+	hpdata->h_mid_purge = false;
+	hpdata->h_mid_hugify = false;
+	hpdata->h_updating = false;
+	hpdata->h_in_psset = false;
+	hpdata_longest_free_range_set(hpdata, HUGEPAGE_PAGES);
+	hpdata->h_nactive = 0;
+	fb_init(hpdata->active_pages, HUGEPAGE_PAGES);
+	hpdata->h_ntouched = 0;
+	fb_init(hpdata->touched_pages, HUGEPAGE_PAGES);
+
+	hpdata_assert_consistent(hpdata);
+}
+
+void *
+hpdata_reserve_alloc(hpdata_t *hpdata, size_t sz) {
+	hpdata_assert_consistent(hpdata);
+	/*
+	 * This is a metadata change; the hpdata should therefore either not be
+	 * in the psset, or should have explicitly marked itself as being
+	 * mid-update.
+	 */
+	assert(!hpdata->h_in_psset || hpdata->h_updating);
+	assert(hpdata->h_alloc_allowed);
+	assert((sz & PAGE_MASK) == 0);
+	size_t npages = sz >> LG_PAGE;
+	assert(npages <= hpdata_longest_free_range_get(hpdata));
+
+	size_t result;
+
+	size_t start = 0;
+	/*
+	 * These are dead stores, but the compiler will issue warnings on them
+	 * since it can't tell statically that found is always true below.
+	 */
+	size_t begin = 0;
+	size_t len = 0;
+
+	size_t largest_unchosen_range = 0;
+	while (true) {
+		bool found = fb_urange_iter(hpdata->active_pages,
+		    HUGEPAGE_PAGES, start, &begin, &len);
+		/*
+		 * A precondition to this function is that hpdata must be able
+		 * to serve the allocation.
+		 */
+		assert(found);
+		assert(len <= hpdata_longest_free_range_get(hpdata));
+		if (len >= npages) {
+			/*
+			 * We use first-fit within the page slabs; this gives
+			 * bounded worst-case fragmentation within a slab.  It's
+			 * not necessarily right; we could experiment with
+			 * various other options.
+			 */
+			break;
+		}
+		if (len > largest_unchosen_range) {
+			largest_unchosen_range = len;
+		}
+		start = begin + len;
+	}
+	/* We found a range; remember it. */
+	result = begin;
+	fb_set_range(hpdata->active_pages, HUGEPAGE_PAGES, begin, npages);
+	hpdata->h_nactive += npages;
+
+	/*
+	 * We might be about to dirty some memory for the first time; update our
+	 * count if so.
+	 */
+	size_t new_dirty = fb_ucount(hpdata->touched_pages,  HUGEPAGE_PAGES,
+	    result, npages);
+	fb_set_range(hpdata->touched_pages, HUGEPAGE_PAGES, result, npages);
+	hpdata->h_ntouched += new_dirty;
+
+	/*
+	 * If we allocated out of a range that was the longest in the hpdata, it
+	 * might be the only one of that size and we'll have to adjust the
+	 * metadata.
+	 */
+	if (len == hpdata_longest_free_range_get(hpdata)) {
+		start = begin + npages;
+		while (start < HUGEPAGE_PAGES) {
+			bool found = fb_urange_iter(hpdata->active_pages,
+			    HUGEPAGE_PAGES, start, &begin, &len);
+			if (!found) {
+				break;
+			}
+			assert(len <= hpdata_longest_free_range_get(hpdata));
+			if (len == hpdata_longest_free_range_get(hpdata)) {
+				largest_unchosen_range = len;
+				break;
+			}
+			if (len > largest_unchosen_range) {
+				largest_unchosen_range = len;
+			}
+			start = begin + len;
+		}
+		hpdata_longest_free_range_set(hpdata, largest_unchosen_range);
+	}
+
+	hpdata_assert_consistent(hpdata);
+	return (void *)(
+	    (uintptr_t)hpdata_addr_get(hpdata) + (result << LG_PAGE));
+}
+
+void
+hpdata_unreserve(hpdata_t *hpdata, void *addr, size_t sz) {
+	hpdata_assert_consistent(hpdata);
+	/* See the comment in reserve. */
+	assert(!hpdata->h_in_psset || hpdata->h_updating);
+	assert(((uintptr_t)addr & PAGE_MASK) == 0);
+	assert((sz & PAGE_MASK) == 0);
+	size_t begin = ((uintptr_t)addr - (uintptr_t)hpdata_addr_get(hpdata))
+	    >> LG_PAGE;
+	assert(begin < HUGEPAGE_PAGES);
+	size_t npages = sz >> LG_PAGE;
+	size_t old_longest_range = hpdata_longest_free_range_get(hpdata);
+
+	fb_unset_range(hpdata->active_pages, HUGEPAGE_PAGES, begin, npages);
+	/* We might have just created a new, larger range. */
+	size_t new_begin = (fb_fls(hpdata->active_pages, HUGEPAGE_PAGES,
+	    begin) + 1);
+	size_t new_end = fb_ffs(hpdata->active_pages, HUGEPAGE_PAGES,
+	    begin + npages - 1);
+	size_t new_range_len = new_end - new_begin;
+
+	if (new_range_len > old_longest_range) {
+		hpdata_longest_free_range_set(hpdata, new_range_len);
+	}
+
+	hpdata->h_nactive -= npages;
+
+	hpdata_assert_consistent(hpdata);
+}
+
+size_t
+hpdata_purge_begin(hpdata_t *hpdata, hpdata_purge_state_t *purge_state) {
+	hpdata_assert_consistent(hpdata);
+	/*
+	 * See the comment below; we might purge any inactive extent, so it's
+	 * unsafe for any other thread to turn any inactive extent active while
+	 * we're operating on it.
+	 */
+	assert(!hpdata_alloc_allowed_get(hpdata));
+
+	purge_state->npurged = 0;
+	purge_state->next_purge_search_begin = 0;
+
+	/*
+	 * Initialize to_purge.
+	 *
+	 * It's possible to end up in situations where two dirty extents are
+	 * separated by a retained extent:
+	 * - 1 page allocated.
+	 * - 1 page allocated.
+	 * - 1 pages allocated.
+	 *
+	 * If the middle page is freed and purged, and then the first and third
+	 * pages are freed, and then another purge pass happens, the hpdata
+	 * looks like this:
+	 * - 1 page dirty.
+	 * - 1 page retained.
+	 * - 1 page dirty.
+	 *
+	 * But it's safe to do a single 3-page purge.
+	 *
+	 * We do this by first computing the dirty pages, and then filling in
+	 * any gaps by extending each range in the dirty bitmap to extend until
+	 * the next active page.  This purges more pages, but the expensive part
+	 * of purging is the TLB shootdowns, rather than the kernel state
+	 * tracking; doing a little bit more of the latter is fine if it saves
+	 * us from doing some of the former.
+	 */
+
+	/*
+	 * The dirty pages are those that are touched but not active.  Note that
+	 * in a normal-ish case, HUGEPAGE_PAGES is something like 512 and the
+	 * fb_group_t is 64 bits, so this is 64 bytes, spread across 8
+	 * fb_group_ts.
+	 */
+	fb_group_t dirty_pages[FB_NGROUPS(HUGEPAGE_PAGES)];
+	fb_init(dirty_pages, HUGEPAGE_PAGES);
+	fb_bit_not(dirty_pages, hpdata->active_pages, HUGEPAGE_PAGES);
+	fb_bit_and(dirty_pages, dirty_pages, hpdata->touched_pages,
+	    HUGEPAGE_PAGES);
+
+	fb_init(purge_state->to_purge, HUGEPAGE_PAGES);
+	size_t next_bit = 0;
+	while (next_bit < HUGEPAGE_PAGES) {
+		size_t next_dirty = fb_ffs(dirty_pages, HUGEPAGE_PAGES,
+		    next_bit);
+		/* Recall that fb_ffs returns nbits if no set bit is found. */
+		if (next_dirty == HUGEPAGE_PAGES) {
+			break;
+		}
+		size_t next_active = fb_ffs(hpdata->active_pages,
+		    HUGEPAGE_PAGES, next_dirty);
+		/*
+		 * Don't purge past the end of the dirty extent, into retained
+		 * pages.  This helps the kernel a tiny bit, but honestly it's
+		 * mostly helpful for testing (where we tend to write test cases
+		 * that think in terms of the dirty ranges).
+		 */
+		ssize_t last_dirty = fb_fls(dirty_pages, HUGEPAGE_PAGES,
+		    next_active - 1);
+		assert(last_dirty >= 0);
+		assert((size_t)last_dirty >= next_dirty);
+		assert((size_t)last_dirty - next_dirty + 1 <= HUGEPAGE_PAGES);
+
+		fb_set_range(purge_state->to_purge, HUGEPAGE_PAGES, next_dirty,
+		    last_dirty - next_dirty + 1);
+		next_bit = next_active + 1;
+	}
+
+	/* We should purge, at least, everything dirty. */
+	size_t ndirty = hpdata->h_ntouched - hpdata->h_nactive;
+	purge_state->ndirty_to_purge = ndirty;
+	assert(ndirty <= fb_scount(
+	    purge_state->to_purge, HUGEPAGE_PAGES, 0, HUGEPAGE_PAGES));
+	assert(ndirty == fb_scount(dirty_pages, HUGEPAGE_PAGES, 0,
+	    HUGEPAGE_PAGES));
+
+	hpdata_assert_consistent(hpdata);
+
+	return ndirty;
+}
+
+bool
+hpdata_purge_next(hpdata_t *hpdata, hpdata_purge_state_t *purge_state,
+    void **r_purge_addr, size_t *r_purge_size) {
+	/*
+	 * Note that we don't have a consistency check here; we're accessing
+	 * hpdata without synchronization, and therefore have no right to expect
+	 * a consistent state.
+	 */
+	assert(!hpdata_alloc_allowed_get(hpdata));
+
+	if (purge_state->next_purge_search_begin == HUGEPAGE_PAGES) {
+		return false;
+	}
+	size_t purge_begin;
+	size_t purge_len;
+	bool found_range = fb_srange_iter(purge_state->to_purge, HUGEPAGE_PAGES,
+	    purge_state->next_purge_search_begin, &purge_begin, &purge_len);
+	if (!found_range) {
+		return false;
+	}
+
+	*r_purge_addr = (void *)(
+	    (uintptr_t)hpdata_addr_get(hpdata) + purge_begin * PAGE);
+	*r_purge_size = purge_len * PAGE;
+
+	purge_state->next_purge_search_begin = purge_begin + purge_len;
+	purge_state->npurged += purge_len;
+	assert(purge_state->npurged <= HUGEPAGE_PAGES);
+
+	return true;
+}
+
+void
+hpdata_purge_end(hpdata_t *hpdata, hpdata_purge_state_t *purge_state) {
+	assert(!hpdata_alloc_allowed_get(hpdata));
+	hpdata_assert_consistent(hpdata);
+	/* See the comment in reserve. */
+	assert(!hpdata->h_in_psset || hpdata->h_updating);
+
+	assert(purge_state->npurged == fb_scount(purge_state->to_purge,
+	    HUGEPAGE_PAGES, 0, HUGEPAGE_PAGES));
+	assert(purge_state->npurged >= purge_state->ndirty_to_purge);
+
+	fb_bit_not(purge_state->to_purge, purge_state->to_purge,
+	    HUGEPAGE_PAGES);
+	fb_bit_and(hpdata->touched_pages, hpdata->touched_pages,
+	    purge_state->to_purge, HUGEPAGE_PAGES);
+	assert(hpdata->h_ntouched >= purge_state->ndirty_to_purge);
+	hpdata->h_ntouched -= purge_state->ndirty_to_purge;
+
+	hpdata_assert_consistent(hpdata);
+}
+
+void
+hpdata_hugify(hpdata_t *hpdata) {
+	hpdata_assert_consistent(hpdata);
+	hpdata->h_huge = true;
+	fb_set_range(hpdata->touched_pages, HUGEPAGE_PAGES, 0, HUGEPAGE_PAGES);
+	hpdata->h_ntouched = HUGEPAGE_PAGES;
+	hpdata_assert_consistent(hpdata);
+}
+
+void
+hpdata_dehugify(hpdata_t *hpdata) {
+	hpdata_assert_consistent(hpdata);
+	hpdata->h_huge = false;
+	hpdata_assert_consistent(hpdata);
+}
diff --git a/deps/jemalloc/src/inspect.c b/deps/jemalloc/src/inspect.c
new file mode 100644
index 0000000..911b5d5
--- /dev/null
+++ b/deps/jemalloc/src/inspect.c
@@ -0,0 +1,77 @@
+#include "jemalloc/internal/jemalloc_preamble.h"
+#include "jemalloc/internal/jemalloc_internal_includes.h"
+
+void
+inspect_extent_util_stats_get(tsdn_t *tsdn, const void *ptr, size_t *nfree,
+    size_t *nregs, size_t *size) {
+	assert(ptr != NULL && nfree != NULL && nregs != NULL && size != NULL);
+
+	const edata_t *edata = emap_edata_lookup(tsdn, &arena_emap_global, ptr);
+	if (unlikely(edata == NULL)) {
+		*nfree = *nregs = *size = 0;
+		return;
+	}
+
+	*size = edata_size_get(edata);
+	if (!edata_slab_get(edata)) {
+		*nfree = 0;
+		*nregs = 1;
+	} else {
+		*nfree = edata_nfree_get(edata);
+		*nregs = bin_infos[edata_szind_get(edata)].nregs;
+		assert(*nfree <= *nregs);
+		assert(*nfree * edata_usize_get(edata) <= *size);
+	}
+}
+
+void
+inspect_extent_util_stats_verbose_get(tsdn_t *tsdn, const void *ptr,
+    size_t *nfree, size_t *nregs, size_t *size, size_t *bin_nfree,
+    size_t *bin_nregs, void **slabcur_addr) {
+	assert(ptr != NULL && nfree != NULL && nregs != NULL && size != NULL
+	    && bin_nfree != NULL && bin_nregs != NULL && slabcur_addr != NULL);
+
+	const edata_t *edata = emap_edata_lookup(tsdn, &arena_emap_global, ptr);
+	if (unlikely(edata == NULL)) {
+		*nfree = *nregs = *size = *bin_nfree = *bin_nregs = 0;
+		*slabcur_addr = NULL;
+		return;
+	}
+
+	*size = edata_size_get(edata);
+	if (!edata_slab_get(edata)) {
+		*nfree = *bin_nfree = *bin_nregs = 0;
+		*nregs = 1;
+		*slabcur_addr = NULL;
+		return;
+	}
+
+	*nfree = edata_nfree_get(edata);
+	const szind_t szind = edata_szind_get(edata);
+	*nregs = bin_infos[szind].nregs;
+	assert(*nfree <= *nregs);
+	assert(*nfree * edata_usize_get(edata) <= *size);
+
+	arena_t *arena = (arena_t *)atomic_load_p(
+	    &arenas[edata_arena_ind_get(edata)], ATOMIC_RELAXED);
+	assert(arena != NULL);
+	const unsigned binshard = edata_binshard_get(edata);
+	bin_t *bin = arena_get_bin(arena, szind, binshard);
+
+	malloc_mutex_lock(tsdn, &bin->lock);
+	if (config_stats) {
+		*bin_nregs = *nregs * bin->stats.curslabs;
+		assert(*bin_nregs >= bin->stats.curregs);
+		*bin_nfree = *bin_nregs - bin->stats.curregs;
+	} else {
+		*bin_nfree = *bin_nregs = 0;
+	}
+	edata_t *slab;
+	if (bin->slabcur != NULL) {
+		slab = bin->slabcur;
+	} else {
+		slab = edata_heap_first(&bin->slabs_nonfull);
+	}
+	*slabcur_addr = slab != NULL ? edata_addr_get(slab) : NULL;
+	malloc_mutex_unlock(tsdn, &bin->lock);
+}
diff --git a/deps/jemalloc/src/jemalloc.c b/deps/jemalloc/src/jemalloc.c
new file mode 100644
index 0000000..8302609
--- /dev/null
+++ b/deps/jemalloc/src/jemalloc.c
@@ -0,0 +1,4485 @@
+#define JEMALLOC_C_
+#include "jemalloc/internal/jemalloc_preamble.h"
+#include "jemalloc/internal/jemalloc_internal_includes.h"
+
+#include "jemalloc/internal/assert.h"
+#include "jemalloc/internal/atomic.h"
+#include "jemalloc/internal/buf_writer.h"
+#include "jemalloc/internal/ctl.h"
+#include "jemalloc/internal/emap.h"
+#include "jemalloc/internal/extent_dss.h"
+#include "jemalloc/internal/extent_mmap.h"
+#include "jemalloc/internal/fxp.h"
+#include "jemalloc/internal/san.h"
+#include "jemalloc/internal/hook.h"
+#include "jemalloc/internal/jemalloc_internal_types.h"
+#include "jemalloc/internal/log.h"
+#include "jemalloc/internal/malloc_io.h"
+#include "jemalloc/internal/mutex.h"
+#include "jemalloc/internal/nstime.h"
+#include "jemalloc/internal/rtree.h"
+#include "jemalloc/internal/safety_check.h"
+#include "jemalloc/internal/sc.h"
+#include "jemalloc/internal/spin.h"
+#include "jemalloc/internal/sz.h"
+#include "jemalloc/internal/ticker.h"
+#include "jemalloc/internal/thread_event.h"
+#include "jemalloc/internal/util.h"
+
+/******************************************************************************/
+/* Data. */
+
+/* Runtime configuration options. */
+const char	*je_malloc_conf
+#ifndef _WIN32
+    JEMALLOC_ATTR(weak)
+#endif
+    ;
+/*
+ * The usual rule is that the closer to runtime you are, the higher priority
+ * your configuration settings are (so the jemalloc config options get lower
+ * priority than the per-binary setting, which gets lower priority than the /etc
+ * setting, which gets lower priority than the environment settings).
+ *
+ * But it's a fairly common use case in some testing environments for a user to
+ * be able to control the binary, but nothing else (e.g. a performancy canary
+ * uses the production OS and environment variables, but can run any binary in
+ * those circumstances).  For these use cases, it's handy to have an in-binary
+ * mechanism for overriding environment variable settings, with the idea that if
+ * the results are positive they get promoted to the official settings, and
+ * moved from the binary to the environment variable.
+ *
+ * We don't actually want this to be widespread, so we'll give it a silly name
+ * and not mention it in headers or documentation.
+ */
+const char	*je_malloc_conf_2_conf_harder
+#ifndef _WIN32
+    JEMALLOC_ATTR(weak)
+#endif
+    ;
+
+bool	opt_abort =
+#ifdef JEMALLOC_DEBUG
+    true
+#else
+    false
+#endif
+    ;
+bool	opt_abort_conf =
+#ifdef JEMALLOC_DEBUG
+    true
+#else
+    false
+#endif
+    ;
+/* Intentionally default off, even with debug builds. */
+bool	opt_confirm_conf = false;
+const char	*opt_junk =
+#if (defined(JEMALLOC_DEBUG) && defined(JEMALLOC_FILL))
+    "true"
+#else
+    "false"
+#endif
+    ;
+bool	opt_junk_alloc =
+#if (defined(JEMALLOC_DEBUG) && defined(JEMALLOC_FILL))
+    true
+#else
+    false
+#endif
+    ;
+bool	opt_junk_free =
+#if (defined(JEMALLOC_DEBUG) && defined(JEMALLOC_FILL))
+    true
+#else
+    false
+#endif
+    ;
+bool	opt_trust_madvise =
+#ifdef JEMALLOC_PURGE_MADVISE_DONTNEED_ZEROS
+    false
+#else
+    true
+#endif
+    ;
+
+bool opt_cache_oblivious =
+#ifdef JEMALLOC_CACHE_OBLIVIOUS
+    true
+#else
+    false
+#endif
+    ;
+
+zero_realloc_action_t opt_zero_realloc_action =
+#ifdef JEMALLOC_ZERO_REALLOC_DEFAULT_FREE
+    zero_realloc_action_free
+#else
+    zero_realloc_action_alloc
+#endif
+    ;
+
+atomic_zu_t zero_realloc_count = ATOMIC_INIT(0);
+
+const char *zero_realloc_mode_names[] = {
+	"alloc",
+	"free",
+	"abort",
+};
+
+/*
+ * These are the documented values for junk fill debugging facilities -- see the
+ * man page.
+ */
+static const uint8_t junk_alloc_byte = 0xa5;
+static const uint8_t junk_free_byte = 0x5a;
+
+static void default_junk_alloc(void *ptr, size_t usize) {
+	memset(ptr, junk_alloc_byte, usize);
+}
+
+static void default_junk_free(void *ptr, size_t usize) {
+	memset(ptr, junk_free_byte, usize);
+}
+
+void (*junk_alloc_callback)(void *ptr, size_t size) = &default_junk_alloc;
+void (*junk_free_callback)(void *ptr, size_t size) = &default_junk_free;
+
+bool	opt_utrace = false;
+bool	opt_xmalloc = false;
+bool	opt_experimental_infallible_new = false;
+bool	opt_zero = false;
+unsigned	opt_narenas = 0;
+fxp_t		opt_narenas_ratio = FXP_INIT_INT(4);
+
+unsigned	ncpus;
+
+/* Protects arenas initialization. */
+malloc_mutex_t arenas_lock;
+
+/* The global hpa, and whether it's on. */
+bool opt_hpa = false;
+hpa_shard_opts_t opt_hpa_opts = HPA_SHARD_OPTS_DEFAULT;
+sec_opts_t opt_hpa_sec_opts = SEC_OPTS_DEFAULT;
+
+/*
+ * Arenas that are used to service external requests.  Not all elements of the
+ * arenas array are necessarily used; arenas are created lazily as needed.
+ *
+ * arenas[0..narenas_auto) are used for automatic multiplexing of threads and
+ * arenas.  arenas[narenas_auto..narenas_total) are only used if the application
+ * takes some action to create them and allocate from them.
+ *
+ * Points to an arena_t.
+ */
+JEMALLOC_ALIGNED(CACHELINE)
+atomic_p_t		arenas[MALLOCX_ARENA_LIMIT];
+static atomic_u_t	narenas_total; /* Use narenas_total_*(). */
+/* Below three are read-only after initialization. */
+static arena_t		*a0; /* arenas[0]. */
+unsigned		narenas_auto;
+unsigned		manual_arena_base;
+
+malloc_init_t malloc_init_state = malloc_init_uninitialized;
+
+/* False should be the common case.  Set to true to trigger initialization. */
+bool			malloc_slow = true;
+
+/* When malloc_slow is true, set the corresponding bits for sanity check. */
+enum {
+	flag_opt_junk_alloc	= (1U),
+	flag_opt_junk_free	= (1U << 1),
+	flag_opt_zero		= (1U << 2),
+	flag_opt_utrace		= (1U << 3),
+	flag_opt_xmalloc	= (1U << 4)
+};
+static uint8_t	malloc_slow_flags;
+
+#ifdef JEMALLOC_THREADED_INIT
+/* Used to let the initializing thread recursively allocate. */
+#  define NO_INITIALIZER	((unsigned long)0)
+#  define INITIALIZER		pthread_self()
+#  define IS_INITIALIZER	(malloc_initializer == pthread_self())
+static pthread_t		malloc_initializer = NO_INITIALIZER;
+#else
+#  define NO_INITIALIZER	false
+#  define INITIALIZER		true
+#  define IS_INITIALIZER	malloc_initializer
+static bool			malloc_initializer = NO_INITIALIZER;
+#endif
+
+/* Used to avoid initialization races. */
+#ifdef _WIN32
+#if _WIN32_WINNT >= 0x0600
+static malloc_mutex_t	init_lock = SRWLOCK_INIT;
+#else
+static malloc_mutex_t	init_lock;
+static bool init_lock_initialized = false;
+
+JEMALLOC_ATTR(constructor)
+static void WINAPI
+_init_init_lock(void) {
+	/*
+	 * If another constructor in the same binary is using mallctl to e.g.
+	 * set up extent hooks, it may end up running before this one, and
+	 * malloc_init_hard will crash trying to lock the uninitialized lock. So
+	 * we force an initialization of the lock in malloc_init_hard as well.
+	 * We don't try to care about atomicity of the accessed to the
+	 * init_lock_initialized boolean, since it really only matters early in
+	 * the process creation, before any separate thread normally starts
+	 * doing anything.
+	 */
+	if (!init_lock_initialized) {
+		malloc_mutex_init(&init_lock, "init", WITNESS_RANK_INIT,
+		    malloc_mutex_rank_exclusive);
+	}
+	init_lock_initialized = true;
+}
+
+#ifdef _MSC_VER
+#  pragma section(".CRT$XCU", read)
+JEMALLOC_SECTION(".CRT$XCU") JEMALLOC_ATTR(used)
+static const void (WINAPI *init_init_lock)(void) = _init_init_lock;
+#endif
+#endif
+#else
+static malloc_mutex_t	init_lock = MALLOC_MUTEX_INITIALIZER;
+#endif
+
+typedef struct {
+	void	*p;	/* Input pointer (as in realloc(p, s)). */
+	size_t	s;	/* Request size. */
+	void	*r;	/* Result pointer. */
+} malloc_utrace_t;
+
+#ifdef JEMALLOC_UTRACE
+#  define UTRACE(a, b, c) do {						\
+	if (unlikely(opt_utrace)) {					\
+		int utrace_serrno = errno;				\
+		malloc_utrace_t ut;					\
+		ut.p = (a);						\
+		ut.s = (b);						\
+		ut.r = (c);						\
+		UTRACE_CALL(&ut, sizeof(ut));				\
+		errno = utrace_serrno;					\
+	}								\
+} while (0)
+#else
+#  define UTRACE(a, b, c)
+#endif
+
+/* Whether encountered any invalid config options. */
+static bool had_conf_error = false;
+
+/******************************************************************************/
+/*
+ * Function prototypes for static functions that are referenced prior to
+ * definition.
+ */
+
+static bool	malloc_init_hard_a0(void);
+static bool	malloc_init_hard(void);
+
+/******************************************************************************/
+/*
+ * Begin miscellaneous support functions.
+ */
+
+JEMALLOC_ALWAYS_INLINE bool
+malloc_init_a0(void) {
+	if (unlikely(malloc_init_state == malloc_init_uninitialized)) {
+		return malloc_init_hard_a0();
+	}
+	return false;
+}
+
+JEMALLOC_ALWAYS_INLINE bool
+malloc_init(void) {
+	if (unlikely(!malloc_initialized()) && malloc_init_hard()) {
+		return true;
+	}
+	return false;
+}
+
+/*
+ * The a0*() functions are used instead of i{d,}alloc() in situations that
+ * cannot tolerate TLS variable access.
+ */
+
+static void *
+a0ialloc(size_t size, bool zero, bool is_internal) {
+	if (unlikely(malloc_init_a0())) {
+		return NULL;
+	}
+
+	return iallocztm(TSDN_NULL, size, sz_size2index(size), zero, NULL,
+	    is_internal, arena_get(TSDN_NULL, 0, true), true);
+}
+
+static void
+a0idalloc(void *ptr, bool is_internal) {
+	idalloctm(TSDN_NULL, ptr, NULL, NULL, is_internal, true);
+}
+
+void *
+a0malloc(size_t size) {
+	return a0ialloc(size, false, true);
+}
+
+void
+a0dalloc(void *ptr) {
+	a0idalloc(ptr, true);
+}
+
+/*
+ * FreeBSD's libc uses the bootstrap_*() functions in bootstrap-sensitive
+ * situations that cannot tolerate TLS variable access (TLS allocation and very
+ * early internal data structure initialization).
+ */
+
+void *
+bootstrap_malloc(size_t size) {
+	if (unlikely(size == 0)) {
+		size = 1;
+	}
+
+	return a0ialloc(size, false, false);
+}
+
+void *
+bootstrap_calloc(size_t num, size_t size) {
+	size_t num_size;
+
+	num_size = num * size;
+	if (unlikely(num_size == 0)) {
+		assert(num == 0 || size == 0);
+		num_size = 1;
+	}
+
+	return a0ialloc(num_size, true, false);
+}
+
+void
+bootstrap_free(void *ptr) {
+	if (unlikely(ptr == NULL)) {
+		return;
+	}
+
+	a0idalloc(ptr, false);
+}
+
+void
+arena_set(unsigned ind, arena_t *arena) {
+	atomic_store_p(&arenas[ind], arena, ATOMIC_RELEASE);
+}
+
+static void
+narenas_total_set(unsigned narenas) {
+	atomic_store_u(&narenas_total, narenas, ATOMIC_RELEASE);
+}
+
+static void
+narenas_total_inc(void) {
+	atomic_fetch_add_u(&narenas_total, 1, ATOMIC_RELEASE);
+}
+
+unsigned
+narenas_total_get(void) {
+	return atomic_load_u(&narenas_total, ATOMIC_ACQUIRE);
+}
+
+/* Create a new arena and insert it into the arenas array at index ind. */
+static arena_t *
+arena_init_locked(tsdn_t *tsdn, unsigned ind, const arena_config_t *config) {
+	arena_t *arena;
+
+	assert(ind <= narenas_total_get());
+	if (ind >= MALLOCX_ARENA_LIMIT) {
+		return NULL;
+	}
+	if (ind == narenas_total_get()) {
+		narenas_total_inc();
+	}
+
+	/*
+	 * Another thread may have already initialized arenas[ind] if it's an
+	 * auto arena.
+	 */
+	arena = arena_get(tsdn, ind, false);
+	if (arena != NULL) {
+		assert(arena_is_auto(arena));
+		return arena;
+	}
+
+	/* Actually initialize the arena. */
+	arena = arena_new(tsdn, ind, config);
+
+	return arena;
+}
+
+static void
+arena_new_create_background_thread(tsdn_t *tsdn, unsigned ind) {
+	if (ind == 0) {
+		return;
+	}
+	/*
+	 * Avoid creating a new background thread just for the huge arena, which
+	 * purges eagerly by default.
+	 */
+	if (have_background_thread && !arena_is_huge(ind)) {
+		if (background_thread_create(tsdn_tsd(tsdn), ind)) {
+			malloc_printf("<jemalloc>: error in background thread "
+				      "creation for arena %u. Abort.\n", ind);
+			abort();
+		}
+	}
+}
+
+arena_t *
+arena_init(tsdn_t *tsdn, unsigned ind, const arena_config_t *config) {
+	arena_t *arena;
+
+	malloc_mutex_lock(tsdn, &arenas_lock);
+	arena = arena_init_locked(tsdn, ind, config);
+	malloc_mutex_unlock(tsdn, &arenas_lock);
+
+	arena_new_create_background_thread(tsdn, ind);
+
+	return arena;
+}
+
+static void
+arena_bind(tsd_t *tsd, unsigned ind, bool internal) {
+	arena_t *arena = arena_get(tsd_tsdn(tsd), ind, false);
+	arena_nthreads_inc(arena, internal);
+
+	if (internal) {
+		tsd_iarena_set(tsd, arena);
+	} else {
+		tsd_arena_set(tsd, arena);
+		unsigned shard = atomic_fetch_add_u(&arena->binshard_next, 1,
+		    ATOMIC_RELAXED);
+		tsd_binshards_t *bins = tsd_binshardsp_get(tsd);
+		for (unsigned i = 0; i < SC_NBINS; i++) {
+			assert(bin_infos[i].n_shards > 0 &&
+			    bin_infos[i].n_shards <= BIN_SHARDS_MAX);
+			bins->binshard[i] = shard % bin_infos[i].n_shards;
+		}
+	}
+}
+
+void
+arena_migrate(tsd_t *tsd, arena_t *oldarena, arena_t *newarena) {
+	assert(oldarena != NULL);
+	assert(newarena != NULL);
+
+	arena_nthreads_dec(oldarena, false);
+	arena_nthreads_inc(newarena, false);
+	tsd_arena_set(tsd, newarena);
+
+	if (arena_nthreads_get(oldarena, false) == 0) {
+		/* Purge if the old arena has no associated threads anymore. */
+		arena_decay(tsd_tsdn(tsd), oldarena,
+		    /* is_background_thread */ false, /* all */ true);
+	}
+}
+
+static void
+arena_unbind(tsd_t *tsd, unsigned ind, bool internal) {
+	arena_t *arena;
+
+	arena = arena_get(tsd_tsdn(tsd), ind, false);
+	arena_nthreads_dec(arena, internal);
+
+	if (internal) {
+		tsd_iarena_set(tsd, NULL);
+	} else {
+		tsd_arena_set(tsd, NULL);
+	}
+}
+
+/* Slow path, called only by arena_choose(). */
+arena_t *
+arena_choose_hard(tsd_t *tsd, bool internal) {
+	arena_t *ret JEMALLOC_CC_SILENCE_INIT(NULL);
+
+	if (have_percpu_arena && PERCPU_ARENA_ENABLED(opt_percpu_arena)) {
+		unsigned choose = percpu_arena_choose();
+		ret = arena_get(tsd_tsdn(tsd), choose, true);
+		assert(ret != NULL);
+		arena_bind(tsd, arena_ind_get(ret), false);
+		arena_bind(tsd, arena_ind_get(ret), true);
+
+		return ret;
+	}
+
+	if (narenas_auto > 1) {
+		unsigned i, j, choose[2], first_null;
+		bool is_new_arena[2];
+
+		/*
+		 * Determine binding for both non-internal and internal
+		 * allocation.
+		 *
+		 *   choose[0]: For application allocation.
+		 *   choose[1]: For internal metadata allocation.
+		 */
+
+		for (j = 0; j < 2; j++) {
+			choose[j] = 0;
+			is_new_arena[j] = false;
+		}
+
+		first_null = narenas_auto;
+		malloc_mutex_lock(tsd_tsdn(tsd), &arenas_lock);
+		assert(arena_get(tsd_tsdn(tsd), 0, false) != NULL);
+		for (i = 1; i < narenas_auto; i++) {
+			if (arena_get(tsd_tsdn(tsd), i, false) != NULL) {
+				/*
+				 * Choose the first arena that has the lowest
+				 * number of threads assigned to it.
+				 */
+				for (j = 0; j < 2; j++) {
+					if (arena_nthreads_get(arena_get(
+					    tsd_tsdn(tsd), i, false), !!j) <
+					    arena_nthreads_get(arena_get(
+					    tsd_tsdn(tsd), choose[j], false),
+					    !!j)) {
+						choose[j] = i;
+					}
+				}
+			} else if (first_null == narenas_auto) {
+				/*
+				 * Record the index of the first uninitialized
+				 * arena, in case all extant arenas are in use.
+				 *
+				 * NB: It is possible for there to be
+				 * discontinuities in terms of initialized
+				 * versus uninitialized arenas, due to the
+				 * "thread.arena" mallctl.
+				 */
+				first_null = i;
+			}
+		}
+
+		for (j = 0; j < 2; j++) {
+			if (arena_nthreads_get(arena_get(tsd_tsdn(tsd),
+			    choose[j], false), !!j) == 0 || first_null ==
+			    narenas_auto) {
+				/*
+				 * Use an unloaded arena, or the least loaded
+				 * arena if all arenas are already initialized.
+				 */
+				if (!!j == internal) {
+					ret = arena_get(tsd_tsdn(tsd),
+					    choose[j], false);
+				}
+			} else {
+				arena_t *arena;
+
+				/* Initialize a new arena. */
+				choose[j] = first_null;
+				arena = arena_init_locked(tsd_tsdn(tsd),
+				    choose[j], &arena_config_default);
+				if (arena == NULL) {
+					malloc_mutex_unlock(tsd_tsdn(tsd),
+					    &arenas_lock);
+					return NULL;
+				}
+				is_new_arena[j] = true;
+				if (!!j == internal) {
+					ret = arena;
+				}
+			}
+			arena_bind(tsd, choose[j], !!j);
+		}
+		malloc_mutex_unlock(tsd_tsdn(tsd), &arenas_lock);
+
+		for (j = 0; j < 2; j++) {
+			if (is_new_arena[j]) {
+				assert(choose[j] > 0);
+				arena_new_create_background_thread(
+				    tsd_tsdn(tsd), choose[j]);
+			}
+		}
+
+	} else {
+		ret = arena_get(tsd_tsdn(tsd), 0, false);
+		arena_bind(tsd, 0, false);
+		arena_bind(tsd, 0, true);
+	}
+
+	return ret;
+}
+
+void
+iarena_cleanup(tsd_t *tsd) {
+	arena_t *iarena;
+
+	iarena = tsd_iarena_get(tsd);
+	if (iarena != NULL) {
+		arena_unbind(tsd, arena_ind_get(iarena), true);
+	}
+}
+
+void
+arena_cleanup(tsd_t *tsd) {
+	arena_t *arena;
+
+	arena = tsd_arena_get(tsd);
+	if (arena != NULL) {
+		arena_unbind(tsd, arena_ind_get(arena), false);
+	}
+}
+
+static void
+stats_print_atexit(void) {
+	if (config_stats) {
+		tsdn_t *tsdn;
+		unsigned narenas, i;
+
+		tsdn = tsdn_fetch();
+
+		/*
+		 * Merge stats from extant threads.  This is racy, since
+		 * individual threads do not lock when recording tcache stats
+		 * events.  As a consequence, the final stats may be slightly
+		 * out of date by the time they are reported, if other threads
+		 * continue to allocate.
+		 */
+		for (i = 0, narenas = narenas_total_get(); i < narenas; i++) {
+			arena_t *arena = arena_get(tsdn, i, false);
+			if (arena != NULL) {
+				tcache_slow_t *tcache_slow;
+
+				malloc_mutex_lock(tsdn, &arena->tcache_ql_mtx);
+				ql_foreach(tcache_slow, &arena->tcache_ql,
+				    link) {
+					tcache_stats_merge(tsdn,
+					    tcache_slow->tcache, arena);
+				}
+				malloc_mutex_unlock(tsdn,
+				    &arena->tcache_ql_mtx);
+			}
+		}
+	}
+	je_malloc_stats_print(NULL, NULL, opt_stats_print_opts);
+}
+
+/*
+ * Ensure that we don't hold any locks upon entry to or exit from allocator
+ * code (in a "broad" sense that doesn't count a reentrant allocation as an
+ * entrance or exit).
+ */
+JEMALLOC_ALWAYS_INLINE void
+check_entry_exit_locking(tsdn_t *tsdn) {
+	if (!config_debug) {
+		return;
+	}
+	if (tsdn_null(tsdn)) {
+		return;
+	}
+	tsd_t *tsd = tsdn_tsd(tsdn);
+	/*
+	 * It's possible we hold locks at entry/exit if we're in a nested
+	 * allocation.
+	 */
+	int8_t reentrancy_level = tsd_reentrancy_level_get(tsd);
+	if (reentrancy_level != 0) {
+		return;
+	}
+	witness_assert_lockless(tsdn_witness_tsdp_get(tsdn));
+}
+
+/*
+ * End miscellaneous support functions.
+ */
+/******************************************************************************/
+/*
+ * Begin initialization functions.
+ */
+
+static char *
+jemalloc_secure_getenv(const char *name) {
+#ifdef JEMALLOC_HAVE_SECURE_GETENV
+	return secure_getenv(name);
+#else
+#  ifdef JEMALLOC_HAVE_ISSETUGID
+	if (issetugid() != 0) {
+		return NULL;
+	}
+#  endif
+	return getenv(name);
+#endif
+}
+
+static unsigned
+malloc_ncpus(void) {
+	long result;
+
+#ifdef _WIN32
+	SYSTEM_INFO si;
+	GetSystemInfo(&si);
+	result = si.dwNumberOfProcessors;
+#elif defined(CPU_COUNT)
+	/*
+	 * glibc >= 2.6 has the CPU_COUNT macro.
+	 *
+	 * glibc's sysconf() uses isspace().  glibc allocates for the first time
+	 * *before* setting up the isspace tables.  Therefore we need a
+	 * different method to get the number of CPUs.
+	 *
+	 * The getaffinity approach is also preferred when only a subset of CPUs
+	 * is available, to avoid using more arenas than necessary.
+	 */
+	{
+#  if defined(__FreeBSD__) || defined(__DragonFly__)
+		cpuset_t set;
+#  else
+		cpu_set_t set;
+#  endif
+#  if defined(JEMALLOC_HAVE_SCHED_SETAFFINITY)
+		sched_getaffinity(0, sizeof(set), &set);
+#  else
+		pthread_getaffinity_np(pthread_self(), sizeof(set), &set);
+#  endif
+		result = CPU_COUNT(&set);
+	}
+#else
+	result = sysconf(_SC_NPROCESSORS_ONLN);
+#endif
+	return ((result == -1) ? 1 : (unsigned)result);
+}
+
+/*
+ * Ensure that number of CPUs is determistinc, i.e. it is the same based on:
+ * - sched_getaffinity()
+ * - _SC_NPROCESSORS_ONLN
+ * - _SC_NPROCESSORS_CONF
+ * Since otherwise tricky things is possible with percpu arenas in use.
+ */
+static bool
+malloc_cpu_count_is_deterministic()
+{
+#ifdef _WIN32
+	return true;
+#else
+	long cpu_onln = sysconf(_SC_NPROCESSORS_ONLN);
+	long cpu_conf = sysconf(_SC_NPROCESSORS_CONF);
+	if (cpu_onln != cpu_conf) {
+		return false;
+	}
+#  if defined(CPU_COUNT)
+#    if defined(__FreeBSD__) || defined(__DragonFly__)
+	cpuset_t set;
+#    else
+	cpu_set_t set;
+#    endif /* __FreeBSD__ */
+#    if defined(JEMALLOC_HAVE_SCHED_SETAFFINITY)
+	sched_getaffinity(0, sizeof(set), &set);
+#    else /* !JEMALLOC_HAVE_SCHED_SETAFFINITY */
+	pthread_getaffinity_np(pthread_self(), sizeof(set), &set);
+#    endif /* JEMALLOC_HAVE_SCHED_SETAFFINITY */
+	long cpu_affinity = CPU_COUNT(&set);
+	if (cpu_affinity != cpu_conf) {
+		return false;
+	}
+#  endif /* CPU_COUNT */
+	return true;
+#endif
+}
+
+static void
+init_opt_stats_opts(const char *v, size_t vlen, char *dest) {
+	size_t opts_len = strlen(dest);
+	assert(opts_len <= stats_print_tot_num_options);
+
+	for (size_t i = 0; i < vlen; i++) {
+		switch (v[i]) {
+#define OPTION(o, v, d, s) case o: break;
+			STATS_PRINT_OPTIONS
+#undef OPTION
+		default: continue;
+		}
+
+		if (strchr(dest, v[i]) != NULL) {
+			/* Ignore repeated. */
+			continue;
+		}
+
+		dest[opts_len++] = v[i];
+		dest[opts_len] = '\0';
+		assert(opts_len <= stats_print_tot_num_options);
+	}
+	assert(opts_len == strlen(dest));
+}
+
+/* Reads the next size pair in a multi-sized option. */
+static bool
+malloc_conf_multi_sizes_next(const char **slab_size_segment_cur,
+    size_t *vlen_left, size_t *slab_start, size_t *slab_end, size_t *new_size) {
+	const char *cur = *slab_size_segment_cur;
+	char *end;
+	uintmax_t um;
+
+	set_errno(0);
+
+	/* First number, then '-' */
+	um = malloc_strtoumax(cur, &end, 0);
+	if (get_errno() != 0 || *end != '-') {
+		return true;
+	}
+	*slab_start = (size_t)um;
+	cur = end + 1;
+
+	/* Second number, then ':' */
+	um = malloc_strtoumax(cur, &end, 0);
+	if (get_errno() != 0 || *end != ':') {
+		return true;
+	}
+	*slab_end = (size_t)um;
+	cur = end + 1;
+
+	/* Last number */
+	um = malloc_strtoumax(cur, &end, 0);
+	if (get_errno() != 0) {
+		return true;
+	}
+	*new_size = (size_t)um;
+
+	/* Consume the separator if there is one. */
+	if (*end == '|') {
+		end++;
+	}
+
+	*vlen_left -= end - *slab_size_segment_cur;
+	*slab_size_segment_cur = end;
+
+	return false;
+}
+
+static bool
+malloc_conf_next(char const **opts_p, char const **k_p, size_t *klen_p,
+    char const **v_p, size_t *vlen_p) {
+	bool accept;
+	const char *opts = *opts_p;
+
+	*k_p = opts;
+
+	for (accept = false; !accept;) {
+		switch (*opts) {
+		case 'A': case 'B': case 'C': case 'D': case 'E': case 'F':
+		case 'G': case 'H': case 'I': case 'J': case 'K': case 'L':
+		case 'M': case 'N': case 'O': case 'P': case 'Q': case 'R':
+		case 'S': case 'T': case 'U': case 'V': case 'W': case 'X':
+		case 'Y': case 'Z':
+		case 'a': case 'b': case 'c': case 'd': case 'e': case 'f':
+		case 'g': case 'h': case 'i': case 'j': case 'k': case 'l':
+		case 'm': case 'n': case 'o': case 'p': case 'q': case 'r':
+		case 's': case 't': case 'u': case 'v': case 'w': case 'x':
+		case 'y': case 'z':
+		case '0': case '1': case '2': case '3': case '4': case '5':
+		case '6': case '7': case '8': case '9':
+		case '_':
+			opts++;
+			break;
+		case ':':
+			opts++;
+			*klen_p = (uintptr_t)opts - 1 - (uintptr_t)*k_p;
+			*v_p = opts;
+			accept = true;
+			break;
+		case '\0':
+			if (opts != *opts_p) {
+				malloc_write("<jemalloc>: Conf string ends "
+				    "with key\n");
+				had_conf_error = true;
+			}
+			return true;
+		default:
+			malloc_write("<jemalloc>: Malformed conf string\n");
+			had_conf_error = true;
+			return true;
+		}
+	}
+
+	for (accept = false; !accept;) {
+		switch (*opts) {
+		case ',':
+			opts++;
+			/*
+			 * Look ahead one character here, because the next time
+			 * this function is called, it will assume that end of
+			 * input has been cleanly reached if no input remains,
+			 * but we have optimistically already consumed the
+			 * comma if one exists.
+			 */
+			if (*opts == '\0') {
+				malloc_write("<jemalloc>: Conf string ends "
+				    "with comma\n");
+				had_conf_error = true;
+			}
+			*vlen_p = (uintptr_t)opts - 1 - (uintptr_t)*v_p;
+			accept = true;
+			break;
+		case '\0':
+			*vlen_p = (uintptr_t)opts - (uintptr_t)*v_p;
+			accept = true;
+			break;
+		default:
+			opts++;
+			break;
+		}
+	}
+
+	*opts_p = opts;
+	return false;
+}
+
+static void
+malloc_abort_invalid_conf(void) {
+	assert(opt_abort_conf);
+	malloc_printf("<jemalloc>: Abort (abort_conf:true) on invalid conf "
+	    "value (see above).\n");
+	abort();
+}
+
+static void
+malloc_conf_error(const char *msg, const char *k, size_t klen, const char *v,
+    size_t vlen) {
+	malloc_printf("<jemalloc>: %s: %.*s:%.*s\n", msg, (int)klen, k,
+	    (int)vlen, v);
+	/* If abort_conf is set, error out after processing all options. */
+	const char *experimental = "experimental_";
+	if (strncmp(k, experimental, strlen(experimental)) == 0) {
+		/* However, tolerate experimental features. */
+		return;
+	}
+	had_conf_error = true;
+}
+
+static void
+malloc_slow_flag_init(void) {
+	/*
+	 * Combine the runtime options into malloc_slow for fast path.  Called
+	 * after processing all the options.
+	 */
+	malloc_slow_flags |= (opt_junk_alloc ? flag_opt_junk_alloc : 0)
+	    | (opt_junk_free ? flag_opt_junk_free : 0)
+	    | (opt_zero ? flag_opt_zero : 0)
+	    | (opt_utrace ? flag_opt_utrace : 0)
+	    | (opt_xmalloc ? flag_opt_xmalloc : 0);
+
+	malloc_slow = (malloc_slow_flags != 0);
+}
+
+/* Number of sources for initializing malloc_conf */
+#define MALLOC_CONF_NSOURCES 5
+
+static const char *
+obtain_malloc_conf(unsigned which_source, char buf[PATH_MAX + 1]) {
+	if (config_debug) {
+		static unsigned read_source = 0;
+		/*
+		 * Each source should only be read once, to minimize # of
+		 * syscalls on init.
+		 */
+		assert(read_source++ == which_source);
+	}
+	assert(which_source < MALLOC_CONF_NSOURCES);
+
+	const char *ret;
+	switch (which_source) {
+	case 0:
+		ret = config_malloc_conf;
+		break;
+	case 1:
+		if (je_malloc_conf != NULL) {
+			/* Use options that were compiled into the program. */
+			ret = je_malloc_conf;
+		} else {
+			/* No configuration specified. */
+			ret = NULL;
+		}
+		break;
+	case 2: {
+		ssize_t linklen = 0;
+#ifndef _WIN32
+		int saved_errno = errno;
+		const char *linkname =
+#  ifdef JEMALLOC_PREFIX
+		    "/etc/"JEMALLOC_PREFIX"malloc.conf"
+#  else
+		    "/etc/malloc.conf"
+#  endif
+		    ;
+
+		/*
+		 * Try to use the contents of the "/etc/malloc.conf" symbolic
+		 * link's name.
+		 */
+#ifndef JEMALLOC_READLINKAT
+		linklen = readlink(linkname, buf, PATH_MAX);
+#else
+		linklen = readlinkat(AT_FDCWD, linkname, buf, PATH_MAX);
+#endif
+		if (linklen == -1) {
+			/* No configuration specified. */
+			linklen = 0;
+			/* Restore errno. */
+			set_errno(saved_errno);
+		}
+#endif
+		buf[linklen] = '\0';
+		ret = buf;
+		break;
+	} case 3: {
+		const char *envname =
+#ifdef JEMALLOC_PREFIX
+		    JEMALLOC_CPREFIX"MALLOC_CONF"
+#else
+		    "MALLOC_CONF"
+#endif
+		    ;
+
+		if ((ret = jemalloc_secure_getenv(envname)) != NULL) {
+			/*
+			 * Do nothing; opts is already initialized to the value
+			 * of the MALLOC_CONF environment variable.
+			 */
+		} else {
+			/* No configuration specified. */
+			ret = NULL;
+		}
+		break;
+	} case 4: {
+		ret = je_malloc_conf_2_conf_harder;
+		break;
+	} default:
+		not_reached();
+		ret = NULL;
+	}
+	return ret;
+}
+
+static void
+malloc_conf_init_helper(sc_data_t *sc_data, unsigned bin_shard_sizes[SC_NBINS],
+    bool initial_call, const char *opts_cache[MALLOC_CONF_NSOURCES],
+    char buf[PATH_MAX + 1]) {
+	static const char *opts_explain[MALLOC_CONF_NSOURCES] = {
+		"string specified via --with-malloc-conf",
+		"string pointed to by the global variable malloc_conf",
+		("\"name\" of the file referenced by the symbolic link named "
+		    "/etc/malloc.conf"),
+		"value of the environment variable MALLOC_CONF",
+		("string pointed to by the global variable "
+		    "malloc_conf_2_conf_harder"),
+	};
+	unsigned i;
+	const char *opts, *k, *v;
+	size_t klen, vlen;
+
+	for (i = 0; i < MALLOC_CONF_NSOURCES; i++) {
+		/* Get runtime configuration. */
+		if (initial_call) {
+			opts_cache[i] = obtain_malloc_conf(i, buf);
+		}
+		opts = opts_cache[i];
+		if (!initial_call && opt_confirm_conf) {
+			malloc_printf(
+			    "<jemalloc>: malloc_conf #%u (%s): \"%s\"\n",
+			    i + 1, opts_explain[i], opts != NULL ? opts : "");
+		}
+		if (opts == NULL) {
+			continue;
+		}
+
+		while (*opts != '\0' && !malloc_conf_next(&opts, &k, &klen, &v,
+		    &vlen)) {
+
+#define CONF_ERROR(msg, k, klen, v, vlen)				\
+			if (!initial_call) {				\
+				malloc_conf_error(			\
+				    msg, k, klen, v, vlen);		\
+				cur_opt_valid = false;			\
+			}
+#define CONF_CONTINUE	{						\
+				if (!initial_call && opt_confirm_conf	\
+				    && cur_opt_valid) {			\
+					malloc_printf("<jemalloc>: -- "	\
+					    "Set conf value: %.*s:%.*s"	\
+					    "\n", (int)klen, k,		\
+					    (int)vlen, v);		\
+				}					\
+				continue;				\
+			}
+#define CONF_MATCH(n)							\
+	(sizeof(n)-1 == klen && strncmp(n, k, klen) == 0)
+#define CONF_MATCH_VALUE(n)						\
+	(sizeof(n)-1 == vlen && strncmp(n, v, vlen) == 0)
+#define CONF_HANDLE_BOOL(o, n)						\
+			if (CONF_MATCH(n)) {				\
+				if (CONF_MATCH_VALUE("true")) {		\
+					o = true;			\
+				} else if (CONF_MATCH_VALUE("false")) {	\
+					o = false;			\
+				} else {				\
+					CONF_ERROR("Invalid conf value",\
+					    k, klen, v, vlen);		\
+				}					\
+				CONF_CONTINUE;				\
+			}
+      /*
+       * One of the CONF_MIN macros below expands, in one of the use points,
+       * to "unsigned integer < 0", which is always false, triggering the
+       * GCC -Wtype-limits warning, which we disable here and re-enable below.
+       */
+      JEMALLOC_DIAGNOSTIC_PUSH
+      JEMALLOC_DIAGNOSTIC_IGNORE_TYPE_LIMITS
+
+#define CONF_DONT_CHECK_MIN(um, min)	false
+#define CONF_CHECK_MIN(um, min)	((um) < (min))
+#define CONF_DONT_CHECK_MAX(um, max)	false
+#define CONF_CHECK_MAX(um, max)	((um) > (max))
+
+#define CONF_VALUE_READ(max_t, result)					\
+	      char *end;						\
+	      set_errno(0);						\
+	      result = (max_t)malloc_strtoumax(v, &end, 0);
+#define CONF_VALUE_READ_FAIL()						\
+	      (get_errno() != 0 || (uintptr_t)end - (uintptr_t)v != vlen)
+
+#define CONF_HANDLE_T(t, max_t, o, n, min, max, check_min, check_max, clip) \
+			if (CONF_MATCH(n)) {				\
+				max_t mv;				\
+				CONF_VALUE_READ(max_t, mv)		\
+				if (CONF_VALUE_READ_FAIL()) {		\
+					CONF_ERROR("Invalid conf value",\
+					    k, klen, v, vlen);		\
+				} else if (clip) {			\
+					if (check_min(mv, (t)(min))) {	\
+						o = (t)(min);		\
+					} else if (			\
+					    check_max(mv, (t)(max))) {	\
+						o = (t)(max);		\
+					} else {			\
+						o = (t)mv;		\
+					}				\
+				} else {				\
+					if (check_min(mv, (t)(min)) ||	\
+					    check_max(mv, (t)(max))) {	\
+						CONF_ERROR(		\
+						    "Out-of-range "	\
+						    "conf value",	\
+						    k, klen, v, vlen);	\
+					} else {			\
+						o = (t)mv;		\
+					}				\
+				}					\
+				CONF_CONTINUE;				\
+			}
+#define CONF_HANDLE_T_U(t, o, n, min, max, check_min, check_max, clip)	\
+	      CONF_HANDLE_T(t, uintmax_t, o, n, min, max, check_min,	\
+			    check_max, clip)
+#define CONF_HANDLE_T_SIGNED(t, o, n, min, max, check_min, check_max, clip)\
+	      CONF_HANDLE_T(t, intmax_t, o, n, min, max, check_min,	\
+			    check_max, clip)
+
+#define CONF_HANDLE_UNSIGNED(o, n, min, max, check_min, check_max,	\
+    clip)								\
+			CONF_HANDLE_T_U(unsigned, o, n, min, max,	\
+			    check_min, check_max, clip)
+#define CONF_HANDLE_SIZE_T(o, n, min, max, check_min, check_max, clip)	\
+			CONF_HANDLE_T_U(size_t, o, n, min, max,		\
+			    check_min, check_max, clip)
+#define CONF_HANDLE_INT64_T(o, n, min, max, check_min, check_max, clip)	\
+			CONF_HANDLE_T_SIGNED(int64_t, o, n, min, max,	\
+			    check_min, check_max, clip)
+#define CONF_HANDLE_UINT64_T(o, n, min, max, check_min, check_max, clip)\
+			CONF_HANDLE_T_U(uint64_t, o, n, min, max,	\
+			    check_min, check_max, clip)
+#define CONF_HANDLE_SSIZE_T(o, n, min, max)				\
+			CONF_HANDLE_T_SIGNED(ssize_t, o, n, min, max,	\
+			    CONF_CHECK_MIN, CONF_CHECK_MAX, false)
+#define CONF_HANDLE_CHAR_P(o, n, d)					\
+			if (CONF_MATCH(n)) {				\
+				size_t cpylen = (vlen <=		\
+				    sizeof(o)-1) ? vlen :		\
+				    sizeof(o)-1;			\
+				strncpy(o, v, cpylen);			\
+				o[cpylen] = '\0';			\
+				CONF_CONTINUE;				\
+			}
+
+			bool cur_opt_valid = true;
+
+			CONF_HANDLE_BOOL(opt_confirm_conf, "confirm_conf")
+			if (initial_call) {
+				continue;
+			}
+
+			CONF_HANDLE_BOOL(opt_abort, "abort")
+			CONF_HANDLE_BOOL(opt_abort_conf, "abort_conf")
+			CONF_HANDLE_BOOL(opt_trust_madvise, "trust_madvise")
+			if (strncmp("metadata_thp", k, klen) == 0) {
+				int m;
+				bool match = false;
+				for (m = 0; m < metadata_thp_mode_limit; m++) {
+					if (strncmp(metadata_thp_mode_names[m],
+					    v, vlen) == 0) {
+						opt_metadata_thp = m;
+						match = true;
+						break;
+					}
+				}
+				if (!match) {
+					CONF_ERROR("Invalid conf value",
+					    k, klen, v, vlen);
+				}
+				CONF_CONTINUE;
+			}
+			CONF_HANDLE_BOOL(opt_retain, "retain")
+			if (strncmp("dss", k, klen) == 0) {
+				int m;
+				bool match = false;
+				for (m = 0; m < dss_prec_limit; m++) {
+					if (strncmp(dss_prec_names[m], v, vlen)
+					    == 0) {
+						if (extent_dss_prec_set(m)) {
+							CONF_ERROR(
+							    "Error setting dss",
+							    k, klen, v, vlen);
+						} else {
+							opt_dss =
+							    dss_prec_names[m];
+							match = true;
+							break;
+						}
+					}
+				}
+				if (!match) {
+					CONF_ERROR("Invalid conf value",
+					    k, klen, v, vlen);
+				}
+				CONF_CONTINUE;
+			}
+			if (CONF_MATCH("narenas")) {
+				if (CONF_MATCH_VALUE("default")) {
+					opt_narenas = 0;
+					CONF_CONTINUE;
+				} else {
+					CONF_HANDLE_UNSIGNED(opt_narenas,
+					    "narenas", 1, UINT_MAX,
+					    CONF_CHECK_MIN, CONF_DONT_CHECK_MAX,
+					    /* clip */ false)
+				}
+			}
+			if (CONF_MATCH("narenas_ratio")) {
+				char *end;
+				bool err = fxp_parse(&opt_narenas_ratio, v,
+				    &end);
+				if (err || (size_t)(end - v) != vlen) {
+					CONF_ERROR("Invalid conf value",
+					    k, klen, v, vlen);
+				}
+				CONF_CONTINUE;
+			}
+			if (CONF_MATCH("bin_shards")) {
+				const char *bin_shards_segment_cur = v;
+				size_t vlen_left = vlen;
+				do {
+					size_t size_start;
+					size_t size_end;
+					size_t nshards;
+					bool err = malloc_conf_multi_sizes_next(
+					    &bin_shards_segment_cur, &vlen_left,
+					    &size_start, &size_end, &nshards);
+					if (err || bin_update_shard_size(
+					    bin_shard_sizes, size_start,
+					    size_end, nshards)) {
+						CONF_ERROR(
+						    "Invalid settings for "
+						    "bin_shards", k, klen, v,
+						    vlen);
+						break;
+					}
+				} while (vlen_left > 0);
+				CONF_CONTINUE;
+			}
+			CONF_HANDLE_INT64_T(opt_mutex_max_spin,
+			    "mutex_max_spin", -1, INT64_MAX, CONF_CHECK_MIN,
+			    CONF_DONT_CHECK_MAX, false);
+			CONF_HANDLE_SSIZE_T(opt_dirty_decay_ms,
+			    "dirty_decay_ms", -1, NSTIME_SEC_MAX * KQU(1000) <
+			    QU(SSIZE_MAX) ? NSTIME_SEC_MAX * KQU(1000) :
+			    SSIZE_MAX);
+			CONF_HANDLE_SSIZE_T(opt_muzzy_decay_ms,
+			    "muzzy_decay_ms", -1, NSTIME_SEC_MAX * KQU(1000) <
+			    QU(SSIZE_MAX) ? NSTIME_SEC_MAX * KQU(1000) :
+			    SSIZE_MAX);
+			CONF_HANDLE_BOOL(opt_stats_print, "stats_print")
+			if (CONF_MATCH("stats_print_opts")) {
+				init_opt_stats_opts(v, vlen,
+				    opt_stats_print_opts);
+				CONF_CONTINUE;
+			}
+			CONF_HANDLE_INT64_T(opt_stats_interval,
+			    "stats_interval", -1, INT64_MAX,
+			    CONF_CHECK_MIN, CONF_DONT_CHECK_MAX, false)
+			if (CONF_MATCH("stats_interval_opts")) {
+				init_opt_stats_opts(v, vlen,
+				    opt_stats_interval_opts);
+				CONF_CONTINUE;
+			}
+			if (config_fill) {
+				if (CONF_MATCH("junk")) {
+					if (CONF_MATCH_VALUE("true")) {
+						opt_junk = "true";
+						opt_junk_alloc = opt_junk_free =
+						    true;
+					} else if (CONF_MATCH_VALUE("false")) {
+						opt_junk = "false";
+						opt_junk_alloc = opt_junk_free =
+						    false;
+					} else if (CONF_MATCH_VALUE("alloc")) {
+						opt_junk = "alloc";
+						opt_junk_alloc = true;
+						opt_junk_free = false;
+					} else if (CONF_MATCH_VALUE("free")) {
+						opt_junk = "free";
+						opt_junk_alloc = false;
+						opt_junk_free = true;
+					} else {
+						CONF_ERROR(
+						    "Invalid conf value",
+						    k, klen, v, vlen);
+					}
+					CONF_CONTINUE;
+				}
+				CONF_HANDLE_BOOL(opt_zero, "zero")
+			}
+			if (config_utrace) {
+				CONF_HANDLE_BOOL(opt_utrace, "utrace")
+			}
+			if (config_xmalloc) {
+				CONF_HANDLE_BOOL(opt_xmalloc, "xmalloc")
+			}
+			if (config_enable_cxx) {
+				CONF_HANDLE_BOOL(
+				    opt_experimental_infallible_new,
+				    "experimental_infallible_new")
+			}
+
+			CONF_HANDLE_BOOL(opt_tcache, "tcache")
+			CONF_HANDLE_SIZE_T(opt_tcache_max, "tcache_max",
+			    0, TCACHE_MAXCLASS_LIMIT, CONF_DONT_CHECK_MIN,
+			    CONF_CHECK_MAX, /* clip */ true)
+			if (CONF_MATCH("lg_tcache_max")) {
+				size_t m;
+				CONF_VALUE_READ(size_t, m)
+				if (CONF_VALUE_READ_FAIL()) {
+					CONF_ERROR("Invalid conf value",
+					    k, klen, v, vlen);
+				} else {
+					/* clip if necessary */
+					if (m > TCACHE_LG_MAXCLASS_LIMIT) {
+						m = TCACHE_LG_MAXCLASS_LIMIT;
+					}
+					opt_tcache_max = (size_t)1 << m;
+				}
+				CONF_CONTINUE;
+			}
+			/*
+			 * Anyone trying to set a value outside -16 to 16 is
+			 * deeply confused.
+			 */
+			CONF_HANDLE_SSIZE_T(opt_lg_tcache_nslots_mul,
+			    "lg_tcache_nslots_mul", -16, 16)
+			/* Ditto with values past 2048. */
+			CONF_HANDLE_UNSIGNED(opt_tcache_nslots_small_min,
+			    "tcache_nslots_small_min", 1, 2048,
+			    CONF_CHECK_MIN, CONF_CHECK_MAX, /* clip */ true)
+			CONF_HANDLE_UNSIGNED(opt_tcache_nslots_small_max,
+			    "tcache_nslots_small_max", 1, 2048,
+			    CONF_CHECK_MIN, CONF_CHECK_MAX, /* clip */ true)
+			CONF_HANDLE_UNSIGNED(opt_tcache_nslots_large,
+			    "tcache_nslots_large", 1, 2048,
+			    CONF_CHECK_MIN, CONF_CHECK_MAX, /* clip */ true)
+			CONF_HANDLE_SIZE_T(opt_tcache_gc_incr_bytes,
+			    "tcache_gc_incr_bytes", 1024, SIZE_T_MAX,
+			    CONF_CHECK_MIN, CONF_DONT_CHECK_MAX,
+			    /* clip */ true)
+			CONF_HANDLE_SIZE_T(opt_tcache_gc_delay_bytes,
+			    "tcache_gc_delay_bytes", 0, SIZE_T_MAX,
+			    CONF_DONT_CHECK_MIN, CONF_DONT_CHECK_MAX,
+			    /* clip */ false)
+			CONF_HANDLE_UNSIGNED(opt_lg_tcache_flush_small_div,
+			    "lg_tcache_flush_small_div", 1, 16,
+			    CONF_CHECK_MIN, CONF_CHECK_MAX, /* clip */ true)
+			CONF_HANDLE_UNSIGNED(opt_lg_tcache_flush_large_div,
+			    "lg_tcache_flush_large_div", 1, 16,
+			    CONF_CHECK_MIN, CONF_CHECK_MAX, /* clip */ true)
+
+			/*
+			 * The runtime option of oversize_threshold remains
+			 * undocumented.  It may be tweaked in the next major
+			 * release (6.0).  The default value 8M is rather
+			 * conservative / safe.  Tuning it further down may
+			 * improve fragmentation a bit more, but may also cause
+			 * contention on the huge arena.
+			 */
+			CONF_HANDLE_SIZE_T(opt_oversize_threshold,
+			    "oversize_threshold", 0, SC_LARGE_MAXCLASS,
+			    CONF_DONT_CHECK_MIN, CONF_CHECK_MAX, false)
+			CONF_HANDLE_SIZE_T(opt_lg_extent_max_active_fit,
+			    "lg_extent_max_active_fit", 0,
+			    (sizeof(size_t) << 3), CONF_DONT_CHECK_MIN,
+			    CONF_CHECK_MAX, false)
+
+			if (strncmp("percpu_arena", k, klen) == 0) {
+				bool match = false;
+				for (int m = percpu_arena_mode_names_base; m <
+				    percpu_arena_mode_names_limit; m++) {
+					if (strncmp(percpu_arena_mode_names[m],
+					    v, vlen) == 0) {
+						if (!have_percpu_arena) {
+							CONF_ERROR(
+							    "No getcpu support",
+							    k, klen, v, vlen);
+						}
+						opt_percpu_arena = m;
+						match = true;
+						break;
+					}
+				}
+				if (!match) {
+					CONF_ERROR("Invalid conf value",
+					    k, klen, v, vlen);
+				}
+				CONF_CONTINUE;
+			}
+			CONF_HANDLE_BOOL(opt_background_thread,
+			    "background_thread");
+			CONF_HANDLE_SIZE_T(opt_max_background_threads,
+					   "max_background_threads", 1,
+					   opt_max_background_threads,
+					   CONF_CHECK_MIN, CONF_CHECK_MAX,
+					   true);
+			CONF_HANDLE_BOOL(opt_hpa, "hpa")
+			CONF_HANDLE_SIZE_T(opt_hpa_opts.slab_max_alloc,
+			    "hpa_slab_max_alloc", PAGE, HUGEPAGE,
+			    CONF_CHECK_MIN, CONF_CHECK_MAX, true);
+
+			/*
+			 * Accept either a ratio-based or an exact hugification
+			 * threshold.
+			 */
+			CONF_HANDLE_SIZE_T(opt_hpa_opts.hugification_threshold,
+			    "hpa_hugification_threshold", PAGE, HUGEPAGE,
+			    CONF_CHECK_MIN, CONF_CHECK_MAX, true);
+			if (CONF_MATCH("hpa_hugification_threshold_ratio")) {
+				fxp_t ratio;
+				char *end;
+				bool err = fxp_parse(&ratio, v,
+				    &end);
+				if (err || (size_t)(end - v) != vlen
+				    || ratio > FXP_INIT_INT(1)) {
+					CONF_ERROR("Invalid conf value",
+					    k, klen, v, vlen);
+				} else {
+					opt_hpa_opts.hugification_threshold =
+					    fxp_mul_frac(HUGEPAGE, ratio);
+				}
+				CONF_CONTINUE;
+			}
+
+			CONF_HANDLE_UINT64_T(
+			    opt_hpa_opts.hugify_delay_ms, "hpa_hugify_delay_ms",
+			    0, 0, CONF_DONT_CHECK_MIN, CONF_DONT_CHECK_MAX,
+			    false);
+
+			CONF_HANDLE_UINT64_T(
+			    opt_hpa_opts.min_purge_interval_ms,
+			    "hpa_min_purge_interval_ms", 0, 0,
+			    CONF_DONT_CHECK_MIN, CONF_DONT_CHECK_MAX, false);
+
+			if (CONF_MATCH("hpa_dirty_mult")) {
+				if (CONF_MATCH_VALUE("-1")) {
+					opt_hpa_opts.dirty_mult = (fxp_t)-1;
+					CONF_CONTINUE;
+				}
+				fxp_t ratio;
+				char *end;
+				bool err = fxp_parse(&ratio, v,
+				    &end);
+				if (err || (size_t)(end - v) != vlen) {
+					CONF_ERROR("Invalid conf value",
+					    k, klen, v, vlen);
+				} else {
+					opt_hpa_opts.dirty_mult = ratio;
+				}
+				CONF_CONTINUE;
+			}
+
+			CONF_HANDLE_SIZE_T(opt_hpa_sec_opts.nshards,
+			    "hpa_sec_nshards", 0, 0, CONF_CHECK_MIN,
+			    CONF_DONT_CHECK_MAX, true);
+			CONF_HANDLE_SIZE_T(opt_hpa_sec_opts.max_alloc,
+			    "hpa_sec_max_alloc", PAGE, 0, CONF_CHECK_MIN,
+			    CONF_DONT_CHECK_MAX, true);
+			CONF_HANDLE_SIZE_T(opt_hpa_sec_opts.max_bytes,
+			    "hpa_sec_max_bytes", PAGE, 0, CONF_CHECK_MIN,
+			    CONF_DONT_CHECK_MAX, true);
+			CONF_HANDLE_SIZE_T(opt_hpa_sec_opts.bytes_after_flush,
+			    "hpa_sec_bytes_after_flush", PAGE, 0,
+			    CONF_CHECK_MIN, CONF_DONT_CHECK_MAX, true);
+			CONF_HANDLE_SIZE_T(opt_hpa_sec_opts.batch_fill_extra,
+			    "hpa_sec_batch_fill_extra", 0, HUGEPAGE_PAGES,
+			    CONF_CHECK_MIN, CONF_CHECK_MAX, true);
+
+			if (CONF_MATCH("slab_sizes")) {
+				if (CONF_MATCH_VALUE("default")) {
+					sc_data_init(sc_data);
+					CONF_CONTINUE;
+				}
+				bool err;
+				const char *slab_size_segment_cur = v;
+				size_t vlen_left = vlen;
+				do {
+					size_t slab_start;
+					size_t slab_end;
+					size_t pgs;
+					err = malloc_conf_multi_sizes_next(
+					    &slab_size_segment_cur,
+					    &vlen_left, &slab_start, &slab_end,
+					    &pgs);
+					if (!err) {
+						sc_data_update_slab_size(
+						    sc_data, slab_start,
+						    slab_end, (int)pgs);
+					} else {
+						CONF_ERROR("Invalid settings "
+						    "for slab_sizes",
+						    k, klen, v, vlen);
+					}
+				} while (!err && vlen_left > 0);
+				CONF_CONTINUE;
+			}
+			if (config_prof) {
+				CONF_HANDLE_BOOL(opt_prof, "prof")
+				CONF_HANDLE_CHAR_P(opt_prof_prefix,
+				    "prof_prefix", "jeprof")
+				CONF_HANDLE_BOOL(opt_prof_active, "prof_active")
+				CONF_HANDLE_BOOL(opt_prof_thread_active_init,
+				    "prof_thread_active_init")
+				CONF_HANDLE_SIZE_T(opt_lg_prof_sample,
+				    "lg_prof_sample", 0, (sizeof(uint64_t) << 3)
+				    - 1, CONF_DONT_CHECK_MIN, CONF_CHECK_MAX,
+				    true)
+				CONF_HANDLE_BOOL(opt_prof_accum, "prof_accum")
+				CONF_HANDLE_SSIZE_T(opt_lg_prof_interval,
+				    "lg_prof_interval", -1,
+				    (sizeof(uint64_t) << 3) - 1)
+				CONF_HANDLE_BOOL(opt_prof_gdump, "prof_gdump")
+				CONF_HANDLE_BOOL(opt_prof_final, "prof_final")
+				CONF_HANDLE_BOOL(opt_prof_leak, "prof_leak")
+				CONF_HANDLE_BOOL(opt_prof_leak_error,
+				    "prof_leak_error")
+				CONF_HANDLE_BOOL(opt_prof_log, "prof_log")
+				CONF_HANDLE_SSIZE_T(opt_prof_recent_alloc_max,
+				    "prof_recent_alloc_max", -1, SSIZE_MAX)
+				CONF_HANDLE_BOOL(opt_prof_stats, "prof_stats")
+				CONF_HANDLE_BOOL(opt_prof_sys_thread_name,
+				    "prof_sys_thread_name")
+				if (CONF_MATCH("prof_time_resolution")) {
+					if (CONF_MATCH_VALUE("default")) {
+						opt_prof_time_res =
+						    prof_time_res_default;
+					} else if (CONF_MATCH_VALUE("high")) {
+						if (!config_high_res_timer) {
+							CONF_ERROR(
+							    "No high resolution"
+							    " timer support",
+							    k, klen, v, vlen);
+						} else {
+							opt_prof_time_res =
+							    prof_time_res_high;
+						}
+					} else {
+						CONF_ERROR("Invalid conf value",
+						    k, klen, v, vlen);
+					}
+					CONF_CONTINUE;
+				}
+				/*
+				 * Undocumented.  When set to false, don't
+				 * correct for an unbiasing bug in jeprof
+				 * attribution.  This can be handy if you want
+				 * to get consistent numbers from your binary
+				 * across different jemalloc versions, even if
+				 * those numbers are incorrect.  The default is
+				 * true.
+				 */
+				CONF_HANDLE_BOOL(opt_prof_unbias, "prof_unbias")
+			}
+			if (config_log) {
+				if (CONF_MATCH("log")) {
+					size_t cpylen = (
+					    vlen <= sizeof(log_var_names) ?
+					    vlen : sizeof(log_var_names) - 1);
+					strncpy(log_var_names, v, cpylen);
+					log_var_names[cpylen] = '\0';
+					CONF_CONTINUE;
+				}
+			}
+			if (CONF_MATCH("thp")) {
+				bool match = false;
+				for (int m = 0; m < thp_mode_names_limit; m++) {
+					if (strncmp(thp_mode_names[m],v, vlen)
+					    == 0) {
+						if (!have_madvise_huge && !have_memcntl) {
+							CONF_ERROR(
+							    "No THP support",
+							    k, klen, v, vlen);
+						}
+						opt_thp = m;
+						match = true;
+						break;
+					}
+				}
+				if (!match) {
+					CONF_ERROR("Invalid conf value",
+					    k, klen, v, vlen);
+				}
+				CONF_CONTINUE;
+			}
+			if (CONF_MATCH("zero_realloc")) {
+				if (CONF_MATCH_VALUE("alloc")) {
+					opt_zero_realloc_action
+					    = zero_realloc_action_alloc;
+				} else if (CONF_MATCH_VALUE("free")) {
+					opt_zero_realloc_action
+					    = zero_realloc_action_free;
+				} else if (CONF_MATCH_VALUE("abort")) {
+					opt_zero_realloc_action
+					    = zero_realloc_action_abort;
+				} else {
+					CONF_ERROR("Invalid conf value",
+					    k, klen, v, vlen);
+				}
+				CONF_CONTINUE;
+			}
+			if (config_uaf_detection &&
+			    CONF_MATCH("lg_san_uaf_align")) {
+				ssize_t a;
+				CONF_VALUE_READ(ssize_t, a)
+				if (CONF_VALUE_READ_FAIL() || a < -1) {
+					CONF_ERROR("Invalid conf value",
+					    k, klen, v, vlen);
+				}
+				if (a == -1) {
+					opt_lg_san_uaf_align = -1;
+					CONF_CONTINUE;
+				}
+
+				/* clip if necessary */
+				ssize_t max_allowed = (sizeof(size_t) << 3) - 1;
+				ssize_t min_allowed = LG_PAGE;
+				if (a > max_allowed) {
+					a = max_allowed;
+				} else if (a < min_allowed) {
+					a = min_allowed;
+				}
+
+				opt_lg_san_uaf_align = a;
+				CONF_CONTINUE;
+			}
+
+			CONF_HANDLE_SIZE_T(opt_san_guard_small,
+			    "san_guard_small", 0, SIZE_T_MAX,
+			    CONF_DONT_CHECK_MIN, CONF_DONT_CHECK_MAX, false)
+			CONF_HANDLE_SIZE_T(opt_san_guard_large,
+			    "san_guard_large", 0, SIZE_T_MAX,
+			    CONF_DONT_CHECK_MIN, CONF_DONT_CHECK_MAX, false)
+
+			CONF_ERROR("Invalid conf pair", k, klen, v, vlen);
+#undef CONF_ERROR
+#undef CONF_CONTINUE
+#undef CONF_MATCH
+#undef CONF_MATCH_VALUE
+#undef CONF_HANDLE_BOOL
+#undef CONF_DONT_CHECK_MIN
+#undef CONF_CHECK_MIN
+#undef CONF_DONT_CHECK_MAX
+#undef CONF_CHECK_MAX
+#undef CONF_HANDLE_T
+#undef CONF_HANDLE_T_U
+#undef CONF_HANDLE_T_SIGNED
+#undef CONF_HANDLE_UNSIGNED
+#undef CONF_HANDLE_SIZE_T
+#undef CONF_HANDLE_SSIZE_T
+#undef CONF_HANDLE_CHAR_P
+    /* Re-enable diagnostic "-Wtype-limits" */
+    JEMALLOC_DIAGNOSTIC_POP
+		}
+		if (opt_abort_conf && had_conf_error) {
+			malloc_abort_invalid_conf();
+		}
+	}
+	atomic_store_b(&log_init_done, true, ATOMIC_RELEASE);
+}
+
+static bool
+malloc_conf_init_check_deps(void) {
+	if (opt_prof_leak_error && !opt_prof_final) {
+		malloc_printf("<jemalloc>: prof_leak_error is set w/o "
+		    "prof_final.\n");
+		return true;
+	}
+
+	return false;
+}
+
+static void
+malloc_conf_init(sc_data_t *sc_data, unsigned bin_shard_sizes[SC_NBINS]) {
+	const char *opts_cache[MALLOC_CONF_NSOURCES] = {NULL, NULL, NULL, NULL,
+		NULL};
+	char buf[PATH_MAX + 1];
+
+	/* The first call only set the confirm_conf option and opts_cache */
+	malloc_conf_init_helper(NULL, NULL, true, opts_cache, buf);
+	malloc_conf_init_helper(sc_data, bin_shard_sizes, false, opts_cache,
+	    NULL);
+	if (malloc_conf_init_check_deps()) {
+		/* check_deps does warning msg only; abort below if needed. */
+		if (opt_abort_conf) {
+			malloc_abort_invalid_conf();
+		}
+	}
+}
+
+#undef MALLOC_CONF_NSOURCES
+
+static bool
+malloc_init_hard_needed(void) {
+	if (malloc_initialized() || (IS_INITIALIZER && malloc_init_state ==
+	    malloc_init_recursible)) {
+		/*
+		 * Another thread initialized the allocator before this one
+		 * acquired init_lock, or this thread is the initializing
+		 * thread, and it is recursively allocating.
+		 */
+		return false;
+	}
+#ifdef JEMALLOC_THREADED_INIT
+	if (malloc_initializer != NO_INITIALIZER && !IS_INITIALIZER) {
+		/* Busy-wait until the initializing thread completes. */
+		spin_t spinner = SPIN_INITIALIZER;
+		do {
+			malloc_mutex_unlock(TSDN_NULL, &init_lock);
+			spin_adaptive(&spinner);
+			malloc_mutex_lock(TSDN_NULL, &init_lock);
+		} while (!malloc_initialized());
+		return false;
+	}
+#endif
+	return true;
+}
+
+static bool
+malloc_init_hard_a0_locked() {
+	malloc_initializer = INITIALIZER;
+
+	JEMALLOC_DIAGNOSTIC_PUSH
+	JEMALLOC_DIAGNOSTIC_IGNORE_MISSING_STRUCT_FIELD_INITIALIZERS
+	sc_data_t sc_data = {0};
+	JEMALLOC_DIAGNOSTIC_POP
+
+	/*
+	 * Ordering here is somewhat tricky; we need sc_boot() first, since that
+	 * determines what the size classes will be, and then
+	 * malloc_conf_init(), since any slab size tweaking will need to be done
+	 * before sz_boot and bin_info_boot, which assume that the values they
+	 * read out of sc_data_global are final.
+	 */
+	sc_boot(&sc_data);
+	unsigned bin_shard_sizes[SC_NBINS];
+	bin_shard_sizes_boot(bin_shard_sizes);
+	/*
+	 * prof_boot0 only initializes opt_prof_prefix.  We need to do it before
+	 * we parse malloc_conf options, in case malloc_conf parsing overwrites
+	 * it.
+	 */
+	if (config_prof) {
+		prof_boot0();
+	}
+	malloc_conf_init(&sc_data, bin_shard_sizes);
+	san_init(opt_lg_san_uaf_align);
+	sz_boot(&sc_data, opt_cache_oblivious);
+	bin_info_boot(&sc_data, bin_shard_sizes);
+
+	if (opt_stats_print) {
+		/* Print statistics at exit. */
+		if (atexit(stats_print_atexit) != 0) {
+			malloc_write("<jemalloc>: Error in atexit()\n");
+			if (opt_abort) {
+				abort();
+			}
+		}
+	}
+
+	if (stats_boot()) {
+		return true;
+	}
+	if (pages_boot()) {
+		return true;
+	}
+	if (base_boot(TSDN_NULL)) {
+		return true;
+	}
+	/* emap_global is static, hence zeroed. */
+	if (emap_init(&arena_emap_global, b0get(), /* zeroed */ true)) {
+		return true;
+	}
+	if (extent_boot()) {
+		return true;
+	}
+	if (ctl_boot()) {
+		return true;
+	}
+	if (config_prof) {
+		prof_boot1();
+	}
+	if (opt_hpa && !hpa_supported()) {
+		malloc_printf("<jemalloc>: HPA not supported in the current "
+		    "configuration; %s.",
+		    opt_abort_conf ? "aborting" : "disabling");
+		if (opt_abort_conf) {
+			malloc_abort_invalid_conf();
+		} else {
+			opt_hpa = false;
+		}
+	}
+	if (arena_boot(&sc_data, b0get(), opt_hpa)) {
+		return true;
+	}
+	if (tcache_boot(TSDN_NULL, b0get())) {
+		return true;
+	}
+	if (malloc_mutex_init(&arenas_lock, "arenas", WITNESS_RANK_ARENAS,
+	    malloc_mutex_rank_exclusive)) {
+		return true;
+	}
+	hook_boot();
+	/*
+	 * Create enough scaffolding to allow recursive allocation in
+	 * malloc_ncpus().
+	 */
+	narenas_auto = 1;
+	manual_arena_base = narenas_auto + 1;
+	memset(arenas, 0, sizeof(arena_t *) * narenas_auto);
+	/*
+	 * Initialize one arena here.  The rest are lazily created in
+	 * arena_choose_hard().
+	 */
+	if (arena_init(TSDN_NULL, 0, &arena_config_default) == NULL) {
+		return true;
+	}
+	a0 = arena_get(TSDN_NULL, 0, false);
+
+	if (opt_hpa && !hpa_supported()) {
+		malloc_printf("<jemalloc>: HPA not supported in the current "
+		    "configuration; %s.",
+		    opt_abort_conf ? "aborting" : "disabling");
+		if (opt_abort_conf) {
+			malloc_abort_invalid_conf();
+		} else {
+			opt_hpa = false;
+		}
+	} else if (opt_hpa) {
+		hpa_shard_opts_t hpa_shard_opts = opt_hpa_opts;
+		hpa_shard_opts.deferral_allowed = background_thread_enabled();
+		if (pa_shard_enable_hpa(TSDN_NULL, &a0->pa_shard,
+		    &hpa_shard_opts, &opt_hpa_sec_opts)) {
+			return true;
+		}
+	}
+
+	malloc_init_state = malloc_init_a0_initialized;
+
+	return false;
+}
+
+static bool
+malloc_init_hard_a0(void) {
+	bool ret;
+
+	malloc_mutex_lock(TSDN_NULL, &init_lock);
+	ret = malloc_init_hard_a0_locked();
+	malloc_mutex_unlock(TSDN_NULL, &init_lock);
+	return ret;
+}
+
+/* Initialize data structures which may trigger recursive allocation. */
+static bool
+malloc_init_hard_recursible(void) {
+	malloc_init_state = malloc_init_recursible;
+
+	ncpus = malloc_ncpus();
+	if (opt_percpu_arena != percpu_arena_disabled) {
+		bool cpu_count_is_deterministic =
+		    malloc_cpu_count_is_deterministic();
+		if (!cpu_count_is_deterministic) {
+			/*
+			 * If # of CPU is not deterministic, and narenas not
+			 * specified, disables per cpu arena since it may not
+			 * detect CPU IDs properly.
+			 */
+			if (opt_narenas == 0) {
+				opt_percpu_arena = percpu_arena_disabled;
+				malloc_write("<jemalloc>: Number of CPUs "
+				    "detected is not deterministic. Per-CPU "
+				    "arena disabled.\n");
+				if (opt_abort_conf) {
+					malloc_abort_invalid_conf();
+				}
+				if (opt_abort) {
+					abort();
+				}
+			}
+		}
+	}
+
+#if (defined(JEMALLOC_HAVE_PTHREAD_ATFORK) && !defined(JEMALLOC_MUTEX_INIT_CB) \
+    && !defined(JEMALLOC_ZONE) && !defined(_WIN32) && \
+    !defined(__native_client__))
+	/* LinuxThreads' pthread_atfork() allocates. */
+	if (pthread_atfork(jemalloc_prefork, jemalloc_postfork_parent,
+	    jemalloc_postfork_child) != 0) {
+		malloc_write("<jemalloc>: Error in pthread_atfork()\n");
+		if (opt_abort) {
+			abort();
+		}
+		return true;
+	}
+#endif
+
+	if (background_thread_boot0()) {
+		return true;
+	}
+
+	return false;
+}
+
+static unsigned
+malloc_narenas_default(void) {
+	assert(ncpus > 0);
+	/*
+	 * For SMP systems, create more than one arena per CPU by
+	 * default.
+	 */
+	if (ncpus > 1) {
+		fxp_t fxp_ncpus = FXP_INIT_INT(ncpus);
+		fxp_t goal = fxp_mul(fxp_ncpus, opt_narenas_ratio);
+		uint32_t int_goal = fxp_round_nearest(goal);
+		if (int_goal == 0) {
+			return 1;
+		}
+		return int_goal;
+	} else {
+		return 1;
+	}
+}
+
+static percpu_arena_mode_t
+percpu_arena_as_initialized(percpu_arena_mode_t mode) {
+	assert(!malloc_initialized());
+	assert(mode <= percpu_arena_disabled);
+
+	if (mode != percpu_arena_disabled) {
+		mode += percpu_arena_mode_enabled_base;
+	}
+
+	return mode;
+}
+
+static bool
+malloc_init_narenas(void) {
+	assert(ncpus > 0);
+
+	if (opt_percpu_arena != percpu_arena_disabled) {
+		if (!have_percpu_arena || malloc_getcpu() < 0) {
+			opt_percpu_arena = percpu_arena_disabled;
+			malloc_printf("<jemalloc>: perCPU arena getcpu() not "
+			    "available. Setting narenas to %u.\n", opt_narenas ?
+			    opt_narenas : malloc_narenas_default());
+			if (opt_abort) {
+				abort();
+			}
+		} else {
+			if (ncpus >= MALLOCX_ARENA_LIMIT) {
+				malloc_printf("<jemalloc>: narenas w/ percpu"
+				    "arena beyond limit (%d)\n", ncpus);
+				if (opt_abort) {
+					abort();
+				}
+				return true;
+			}
+			/* NB: opt_percpu_arena isn't fully initialized yet. */
+			if (percpu_arena_as_initialized(opt_percpu_arena) ==
+			    per_phycpu_arena && ncpus % 2 != 0) {
+				malloc_printf("<jemalloc>: invalid "
+				    "configuration -- per physical CPU arena "
+				    "with odd number (%u) of CPUs (no hyper "
+				    "threading?).\n", ncpus);
+				if (opt_abort)
+					abort();
+			}
+			unsigned n = percpu_arena_ind_limit(
+			    percpu_arena_as_initialized(opt_percpu_arena));
+			if (opt_narenas < n) {
+				/*
+				 * If narenas is specified with percpu_arena
+				 * enabled, actual narenas is set as the greater
+				 * of the two. percpu_arena_choose will be free
+				 * to use any of the arenas based on CPU
+				 * id. This is conservative (at a small cost)
+				 * but ensures correctness.
+				 *
+				 * If for some reason the ncpus determined at
+				 * boot is not the actual number (e.g. because
+				 * of affinity setting from numactl), reserving
+				 * narenas this way provides a workaround for
+				 * percpu_arena.
+				 */
+				opt_narenas = n;
+			}
+		}
+	}
+	if (opt_narenas == 0) {
+		opt_narenas = malloc_narenas_default();
+	}
+	assert(opt_narenas > 0);
+
+	narenas_auto = opt_narenas;
+	/*
+	 * Limit the number of arenas to the indexing range of MALLOCX_ARENA().
+	 */
+	if (narenas_auto >= MALLOCX_ARENA_LIMIT) {
+		narenas_auto = MALLOCX_ARENA_LIMIT - 1;
+		malloc_printf("<jemalloc>: Reducing narenas to limit (%d)\n",
+		    narenas_auto);
+	}
+	narenas_total_set(narenas_auto);
+	if (arena_init_huge()) {
+		narenas_total_inc();
+	}
+	manual_arena_base = narenas_total_get();
+
+	return false;
+}
+
+static void
+malloc_init_percpu(void) {
+	opt_percpu_arena = percpu_arena_as_initialized(opt_percpu_arena);
+}
+
+static bool
+malloc_init_hard_finish(void) {
+	if (malloc_mutex_boot()) {
+		return true;
+	}
+
+	malloc_init_state = malloc_init_initialized;
+	malloc_slow_flag_init();
+
+	return false;
+}
+
+static void
+malloc_init_hard_cleanup(tsdn_t *tsdn, bool reentrancy_set) {
+	malloc_mutex_assert_owner(tsdn, &init_lock);
+	malloc_mutex_unlock(tsdn, &init_lock);
+	if (reentrancy_set) {
+		assert(!tsdn_null(tsdn));
+		tsd_t *tsd = tsdn_tsd(tsdn);
+		assert(tsd_reentrancy_level_get(tsd) > 0);
+		post_reentrancy(tsd);
+	}
+}
+
+static bool
+malloc_init_hard(void) {
+	tsd_t *tsd;
+
+#if defined(_WIN32) && _WIN32_WINNT < 0x0600
+	_init_init_lock();
+#endif
+	malloc_mutex_lock(TSDN_NULL, &init_lock);
+
+#define UNLOCK_RETURN(tsdn, ret, reentrancy)		\
+	malloc_init_hard_cleanup(tsdn, reentrancy);	\
+	return ret;
+
+	if (!malloc_init_hard_needed()) {
+		UNLOCK_RETURN(TSDN_NULL, false, false)
+	}
+
+	if (malloc_init_state != malloc_init_a0_initialized &&
+	    malloc_init_hard_a0_locked()) {
+		UNLOCK_RETURN(TSDN_NULL, true, false)
+	}
+
+	malloc_mutex_unlock(TSDN_NULL, &init_lock);
+	/* Recursive allocation relies on functional tsd. */
+	tsd = malloc_tsd_boot0();
+	if (tsd == NULL) {
+		return true;
+	}
+	if (malloc_init_hard_recursible()) {
+		return true;
+	}
+
+	malloc_mutex_lock(tsd_tsdn(tsd), &init_lock);
+	/* Set reentrancy level to 1 during init. */
+	pre_reentrancy(tsd, NULL);
+	/* Initialize narenas before prof_boot2 (for allocation). */
+	if (malloc_init_narenas()
+	    || background_thread_boot1(tsd_tsdn(tsd), b0get())) {
+		UNLOCK_RETURN(tsd_tsdn(tsd), true, true)
+	}
+	if (config_prof && prof_boot2(tsd, b0get())) {
+		UNLOCK_RETURN(tsd_tsdn(tsd), true, true)
+	}
+
+	malloc_init_percpu();
+
+	if (malloc_init_hard_finish()) {
+		UNLOCK_RETURN(tsd_tsdn(tsd), true, true)
+	}
+	post_reentrancy(tsd);
+	malloc_mutex_unlock(tsd_tsdn(tsd), &init_lock);
+
+	witness_assert_lockless(witness_tsd_tsdn(
+	    tsd_witness_tsdp_get_unsafe(tsd)));
+	malloc_tsd_boot1();
+	/* Update TSD after tsd_boot1. */
+	tsd = tsd_fetch();
+	if (opt_background_thread) {
+		assert(have_background_thread);
+		/*
+		 * Need to finish init & unlock first before creating background
+		 * threads (pthread_create depends on malloc).  ctl_init (which
+		 * sets isthreaded) needs to be called without holding any lock.
+		 */
+		background_thread_ctl_init(tsd_tsdn(tsd));
+		if (background_thread_create(tsd, 0)) {
+			return true;
+		}
+	}
+#undef UNLOCK_RETURN
+	return false;
+}
+
+/*
+ * End initialization functions.
+ */
+/******************************************************************************/
+/*
+ * Begin allocation-path internal functions and data structures.
+ */
+
+/*
+ * Settings determined by the documented behavior of the allocation functions.
+ */
+typedef struct static_opts_s static_opts_t;
+struct static_opts_s {
+	/* Whether or not allocation size may overflow. */
+	bool may_overflow;
+
+	/*
+	 * Whether or not allocations (with alignment) of size 0 should be
+	 * treated as size 1.
+	 */
+	bool bump_empty_aligned_alloc;
+	/*
+	 * Whether to assert that allocations are not of size 0 (after any
+	 * bumping).
+	 */
+	bool assert_nonempty_alloc;
+
+	/*
+	 * Whether or not to modify the 'result' argument to malloc in case of
+	 * error.
+	 */
+	bool null_out_result_on_error;
+	/* Whether to set errno when we encounter an error condition. */
+	bool set_errno_on_error;
+
+	/*
+	 * The minimum valid alignment for functions requesting aligned storage.
+	 */
+	size_t min_alignment;
+
+	/* The error string to use if we oom. */
+	const char *oom_string;
+	/* The error string to use if the passed-in alignment is invalid. */
+	const char *invalid_alignment_string;
+
+	/*
+	 * False if we're configured to skip some time-consuming operations.
+	 *
+	 * This isn't really a malloc "behavior", but it acts as a useful
+	 * summary of several other static (or at least, static after program
+	 * initialization) options.
+	 */
+	bool slow;
+	/*
+	 * Return size.
+	 */
+	bool usize;
+};
+
+JEMALLOC_ALWAYS_INLINE void
+static_opts_init(static_opts_t *static_opts) {
+	static_opts->may_overflow = false;
+	static_opts->bump_empty_aligned_alloc = false;
+	static_opts->assert_nonempty_alloc = false;
+	static_opts->null_out_result_on_error = false;
+	static_opts->set_errno_on_error = false;
+	static_opts->min_alignment = 0;
+	static_opts->oom_string = "";
+	static_opts->invalid_alignment_string = "";
+	static_opts->slow = false;
+	static_opts->usize = false;
+}
+
+/*
+ * These correspond to the macros in jemalloc/jemalloc_macros.h.  Broadly, we
+ * should have one constant here per magic value there.  Note however that the
+ * representations need not be related.
+ */
+#define TCACHE_IND_NONE ((unsigned)-1)
+#define TCACHE_IND_AUTOMATIC ((unsigned)-2)
+#define ARENA_IND_AUTOMATIC ((unsigned)-1)
+
+typedef struct dynamic_opts_s dynamic_opts_t;
+struct dynamic_opts_s {
+	void **result;
+	size_t usize;
+	size_t num_items;
+	size_t item_size;
+	size_t alignment;
+	bool zero;
+	unsigned tcache_ind;
+	unsigned arena_ind;
+};
+
+JEMALLOC_ALWAYS_INLINE void
+dynamic_opts_init(dynamic_opts_t *dynamic_opts) {
+	dynamic_opts->result = NULL;
+	dynamic_opts->usize = 0;
+	dynamic_opts->num_items = 0;
+	dynamic_opts->item_size = 0;
+	dynamic_opts->alignment = 0;
+	dynamic_opts->zero = false;
+	dynamic_opts->tcache_ind = TCACHE_IND_AUTOMATIC;
+	dynamic_opts->arena_ind = ARENA_IND_AUTOMATIC;
+}
+
+/*
+ * ind parameter is optional and is only checked and filled if alignment == 0;
+ * return true if result is out of range.
+ */
+JEMALLOC_ALWAYS_INLINE bool
+aligned_usize_get(size_t size, size_t alignment, size_t *usize, szind_t *ind,
+    bool bump_empty_aligned_alloc) {
+	assert(usize != NULL);
+	if (alignment == 0) {
+		if (ind != NULL) {
+			*ind = sz_size2index(size);
+			if (unlikely(*ind >= SC_NSIZES)) {
+				return true;
+			}
+			*usize = sz_index2size(*ind);
+			assert(*usize > 0 && *usize <= SC_LARGE_MAXCLASS);
+			return false;
+		}
+		*usize = sz_s2u(size);
+	} else {
+		if (bump_empty_aligned_alloc && unlikely(size == 0)) {
+			size = 1;
+		}
+		*usize = sz_sa2u(size, alignment);
+	}
+	if (unlikely(*usize == 0 || *usize > SC_LARGE_MAXCLASS)) {
+		return true;
+	}
+	return false;
+}
+
+JEMALLOC_ALWAYS_INLINE bool
+zero_get(bool guarantee, bool slow) {
+	if (config_fill && slow && unlikely(opt_zero)) {
+		return true;
+	} else {
+		return guarantee;
+	}
+}
+
+JEMALLOC_ALWAYS_INLINE tcache_t *
+tcache_get_from_ind(tsd_t *tsd, unsigned tcache_ind, bool slow, bool is_alloc) {
+	tcache_t *tcache;
+	if (tcache_ind == TCACHE_IND_AUTOMATIC) {
+		if (likely(!slow)) {
+			/* Getting tcache ptr unconditionally. */
+			tcache = tsd_tcachep_get(tsd);
+			assert(tcache == tcache_get(tsd));
+		} else if (is_alloc ||
+		    likely(tsd_reentrancy_level_get(tsd) == 0)) {
+			tcache = tcache_get(tsd);
+		} else {
+			tcache = NULL;
+		}
+	} else {
+		/*
+		 * Should not specify tcache on deallocation path when being
+		 * reentrant.
+		 */
+		assert(is_alloc || tsd_reentrancy_level_get(tsd) == 0 ||
+		    tsd_state_nocleanup(tsd));
+		if (tcache_ind == TCACHE_IND_NONE) {
+			tcache = NULL;
+		} else {
+			tcache = tcaches_get(tsd, tcache_ind);
+		}
+	}
+	return tcache;
+}
+
+/* Return true if a manual arena is specified and arena_get() OOMs. */
+JEMALLOC_ALWAYS_INLINE bool
+arena_get_from_ind(tsd_t *tsd, unsigned arena_ind, arena_t **arena_p) {
+	if (arena_ind == ARENA_IND_AUTOMATIC) {
+		/*
+		 * In case of automatic arena management, we defer arena
+		 * computation until as late as we can, hoping to fill the
+		 * allocation out of the tcache.
+		 */
+		*arena_p = NULL;
+	} else {
+		*arena_p = arena_get(tsd_tsdn(tsd), arena_ind, true);
+		if (unlikely(*arena_p == NULL) && arena_ind >= narenas_auto) {
+			return true;
+		}
+	}
+	return false;
+}
+
+/* ind is ignored if dopts->alignment > 0. */
+JEMALLOC_ALWAYS_INLINE void *
+imalloc_no_sample(static_opts_t *sopts, dynamic_opts_t *dopts, tsd_t *tsd,
+    size_t size, size_t usize, szind_t ind) {
+	/* Fill in the tcache. */
+	tcache_t *tcache = tcache_get_from_ind(tsd, dopts->tcache_ind,
+	    sopts->slow, /* is_alloc */ true);
+
+	/* Fill in the arena. */
+	arena_t *arena;
+	if (arena_get_from_ind(tsd, dopts->arena_ind, &arena)) {
+		return NULL;
+	}
+
+	if (unlikely(dopts->alignment != 0)) {
+		return ipalloct(tsd_tsdn(tsd), usize, dopts->alignment,
+		    dopts->zero, tcache, arena);
+	}
+
+	return iallocztm(tsd_tsdn(tsd), size, ind, dopts->zero, tcache, false,
+	    arena, sopts->slow);
+}
+
+JEMALLOC_ALWAYS_INLINE void *
+imalloc_sample(static_opts_t *sopts, dynamic_opts_t *dopts, tsd_t *tsd,
+    size_t usize, szind_t ind) {
+	void *ret;
+
+	/*
+	 * For small allocations, sampling bumps the usize.  If so, we allocate
+	 * from the ind_large bucket.
+	 */
+	szind_t ind_large;
+	size_t bumped_usize = usize;
+
+	dopts->alignment = prof_sample_align(dopts->alignment);
+	if (usize <= SC_SMALL_MAXCLASS) {
+		assert(((dopts->alignment == 0) ?
+		    sz_s2u(SC_LARGE_MINCLASS) :
+		    sz_sa2u(SC_LARGE_MINCLASS, dopts->alignment))
+			== SC_LARGE_MINCLASS);
+		ind_large = sz_size2index(SC_LARGE_MINCLASS);
+		bumped_usize = sz_s2u(SC_LARGE_MINCLASS);
+		ret = imalloc_no_sample(sopts, dopts, tsd, bumped_usize,
+		    bumped_usize, ind_large);
+		if (unlikely(ret == NULL)) {
+			return NULL;
+		}
+		arena_prof_promote(tsd_tsdn(tsd), ret, usize);
+	} else {
+		ret = imalloc_no_sample(sopts, dopts, tsd, usize, usize, ind);
+	}
+	assert(prof_sample_aligned(ret));
+
+	return ret;
+}
+
+/*
+ * Returns true if the allocation will overflow, and false otherwise.  Sets
+ * *size to the product either way.
+ */
+JEMALLOC_ALWAYS_INLINE bool
+compute_size_with_overflow(bool may_overflow, dynamic_opts_t *dopts,
+    size_t *size) {
+	/*
+	 * This function is just num_items * item_size, except that we may have
+	 * to check for overflow.
+	 */
+
+	if (!may_overflow) {
+		assert(dopts->num_items == 1);
+		*size = dopts->item_size;
+		return false;
+	}
+
+	/* A size_t with its high-half bits all set to 1. */
+	static const size_t high_bits = SIZE_T_MAX << (sizeof(size_t) * 8 / 2);
+
+	*size = dopts->item_size * dopts->num_items;
+
+	if (unlikely(*size == 0)) {
+		return (dopts->num_items != 0 && dopts->item_size != 0);
+	}
+
+	/*
+	 * We got a non-zero size, but we don't know if we overflowed to get
+	 * there.  To avoid having to do a divide, we'll be clever and note that
+	 * if both A and B can be represented in N/2 bits, then their product
+	 * can be represented in N bits (without the possibility of overflow).
+	 */
+	if (likely((high_bits & (dopts->num_items | dopts->item_size)) == 0)) {
+		return false;
+	}
+	if (likely(*size / dopts->item_size == dopts->num_items)) {
+		return false;
+	}
+	return true;
+}
+
+JEMALLOC_ALWAYS_INLINE int
+imalloc_body(static_opts_t *sopts, dynamic_opts_t *dopts, tsd_t *tsd) {
+	/* Where the actual allocated memory will live. */
+	void *allocation = NULL;
+	/* Filled in by compute_size_with_overflow below. */
+	size_t size = 0;
+	/*
+	 * The zero initialization for ind is actually dead store, in that its
+	 * value is reset before any branch on its value is taken.  Sometimes
+	 * though, it's convenient to pass it as arguments before this point.
+	 * To avoid undefined behavior then, we initialize it with dummy stores.
+	 */
+	szind_t ind = 0;
+	/* usize will always be properly initialized. */
+	size_t usize;
+
+	/* Reentrancy is only checked on slow path. */
+	int8_t reentrancy_level;
+
+	/* Compute the amount of memory the user wants. */
+	if (unlikely(compute_size_with_overflow(sopts->may_overflow, dopts,
+	    &size))) {
+		goto label_oom;
+	}
+
+	if (unlikely(dopts->alignment < sopts->min_alignment
+	    || (dopts->alignment & (dopts->alignment - 1)) != 0)) {
+		goto label_invalid_alignment;
+	}
+
+	/* This is the beginning of the "core" algorithm. */
+	dopts->zero = zero_get(dopts->zero, sopts->slow);
+	if (aligned_usize_get(size, dopts->alignment, &usize, &ind,
+	    sopts->bump_empty_aligned_alloc)) {
+		goto label_oom;
+	}
+	dopts->usize = usize;
+	/* Validate the user input. */
+	if (sopts->assert_nonempty_alloc) {
+		assert (size != 0);
+	}
+
+	check_entry_exit_locking(tsd_tsdn(tsd));
+
+	/*
+	 * If we need to handle reentrancy, we can do it out of a
+	 * known-initialized arena (i.e. arena 0).
+	 */
+	reentrancy_level = tsd_reentrancy_level_get(tsd);
+	if (sopts->slow && unlikely(reentrancy_level > 0)) {
+		/*
+		 * We should never specify particular arenas or tcaches from
+		 * within our internal allocations.
+		 */
+		assert(dopts->tcache_ind == TCACHE_IND_AUTOMATIC ||
+		    dopts->tcache_ind == TCACHE_IND_NONE);
+		assert(dopts->arena_ind == ARENA_IND_AUTOMATIC);
+		dopts->tcache_ind = TCACHE_IND_NONE;
+		/* We know that arena 0 has already been initialized. */
+		dopts->arena_ind = 0;
+	}
+
+	/*
+	 * If dopts->alignment > 0, then ind is still 0, but usize was computed
+	 * in the previous if statement.  Down the positive alignment path,
+	 * imalloc_no_sample and imalloc_sample will ignore ind.
+	 */
+
+	/* If profiling is on, get our profiling context. */
+	if (config_prof && opt_prof) {
+		bool prof_active = prof_active_get_unlocked();
+		bool sample_event = te_prof_sample_event_lookahead(tsd, usize);
+		prof_tctx_t *tctx = prof_alloc_prep(tsd, prof_active,
+		    sample_event);
+
+		emap_alloc_ctx_t alloc_ctx;
+		if (likely((uintptr_t)tctx == (uintptr_t)1U)) {
+			alloc_ctx.slab = (usize <= SC_SMALL_MAXCLASS);
+			allocation = imalloc_no_sample(
+			    sopts, dopts, tsd, usize, usize, ind);
+		} else if ((uintptr_t)tctx > (uintptr_t)1U) {
+			allocation = imalloc_sample(
+			    sopts, dopts, tsd, usize, ind);
+			alloc_ctx.slab = false;
+		} else {
+			allocation = NULL;
+		}
+
+		if (unlikely(allocation == NULL)) {
+			prof_alloc_rollback(tsd, tctx);
+			goto label_oom;
+		}
+		prof_malloc(tsd, allocation, size, usize, &alloc_ctx, tctx);
+	} else {
+		assert(!opt_prof);
+		allocation = imalloc_no_sample(sopts, dopts, tsd, size, usize,
+		    ind);
+		if (unlikely(allocation == NULL)) {
+			goto label_oom;
+		}
+	}
+
+	/*
+	 * Allocation has been done at this point.  We still have some
+	 * post-allocation work to do though.
+	 */
+
+	thread_alloc_event(tsd, usize);
+
+	assert(dopts->alignment == 0
+	    || ((uintptr_t)allocation & (dopts->alignment - 1)) == ZU(0));
+
+	assert(usize == isalloc(tsd_tsdn(tsd), allocation));
+
+	if (config_fill && sopts->slow && !dopts->zero
+	    && unlikely(opt_junk_alloc)) {
+		junk_alloc_callback(allocation, usize);
+	}
+
+	if (sopts->slow) {
+		UTRACE(0, size, allocation);
+	}
+
+	/* Success! */
+	check_entry_exit_locking(tsd_tsdn(tsd));
+	*dopts->result = allocation;
+	return 0;
+
+label_oom:
+	if (unlikely(sopts->slow) && config_xmalloc && unlikely(opt_xmalloc)) {
+		malloc_write(sopts->oom_string);
+		abort();
+	}
+
+	if (sopts->slow) {
+		UTRACE(NULL, size, NULL);
+	}
+
+	check_entry_exit_locking(tsd_tsdn(tsd));
+
+	if (sopts->set_errno_on_error) {
+		set_errno(ENOMEM);
+	}
+
+	if (sopts->null_out_result_on_error) {
+		*dopts->result = NULL;
+	}
+
+	return ENOMEM;
+
+	/*
+	 * This label is only jumped to by one goto; we move it out of line
+	 * anyways to avoid obscuring the non-error paths, and for symmetry with
+	 * the oom case.
+	 */
+label_invalid_alignment:
+	if (config_xmalloc && unlikely(opt_xmalloc)) {
+		malloc_write(sopts->invalid_alignment_string);
+		abort();
+	}
+
+	if (sopts->set_errno_on_error) {
+		set_errno(EINVAL);
+	}
+
+	if (sopts->slow) {
+		UTRACE(NULL, size, NULL);
+	}
+
+	check_entry_exit_locking(tsd_tsdn(tsd));
+
+	if (sopts->null_out_result_on_error) {
+		*dopts->result = NULL;
+	}
+
+	return EINVAL;
+}
+
+JEMALLOC_ALWAYS_INLINE bool
+imalloc_init_check(static_opts_t *sopts, dynamic_opts_t *dopts) {
+	if (unlikely(!malloc_initialized()) && unlikely(malloc_init())) {
+		if (config_xmalloc && unlikely(opt_xmalloc)) {
+			malloc_write(sopts->oom_string);
+			abort();
+		}
+		UTRACE(NULL, dopts->num_items * dopts->item_size, NULL);
+		set_errno(ENOMEM);
+		*dopts->result = NULL;
+
+		return false;
+	}
+
+	return true;
+}
+
+/* Returns the errno-style error code of the allocation. */
+JEMALLOC_ALWAYS_INLINE int
+imalloc(static_opts_t *sopts, dynamic_opts_t *dopts) {
+	if (tsd_get_allocates() && !imalloc_init_check(sopts, dopts)) {
+		return ENOMEM;
+	}
+
+	/* We always need the tsd.  Let's grab it right away. */
+	tsd_t *tsd = tsd_fetch();
+	assert(tsd);
+	if (likely(tsd_fast(tsd))) {
+		/* Fast and common path. */
+		tsd_assert_fast(tsd);
+		sopts->slow = false;
+		return imalloc_body(sopts, dopts, tsd);
+	} else {
+		if (!tsd_get_allocates() && !imalloc_init_check(sopts, dopts)) {
+			return ENOMEM;
+		}
+
+		sopts->slow = true;
+		return imalloc_body(sopts, dopts, tsd);
+	}
+}
+
+JEMALLOC_NOINLINE
+void *
+malloc_default(size_t size) {
+	void *ret;
+	static_opts_t sopts;
+	dynamic_opts_t dopts;
+
+	/*
+	 * This variant has logging hook on exit but not on entry.  It's callled
+	 * only by je_malloc, below, which emits the entry one for us (and, if
+	 * it calls us, does so only via tail call).
+	 */
+
+	static_opts_init(&sopts);
+	dynamic_opts_init(&dopts);
+
+	sopts.null_out_result_on_error = true;
+	sopts.set_errno_on_error = true;
+	sopts.oom_string = "<jemalloc>: Error in malloc(): out of memory\n";
+
+	dopts.result = &ret;
+	dopts.num_items = 1;
+	dopts.item_size = size;
+
+	imalloc(&sopts, &dopts);
+	/*
+	 * Note that this branch gets optimized away -- it immediately follows
+	 * the check on tsd_fast that sets sopts.slow.
+	 */
+	if (sopts.slow) {
+		uintptr_t args[3] = {size};
+		hook_invoke_alloc(hook_alloc_malloc, ret, (uintptr_t)ret, args);
+	}
+
+	LOG("core.malloc.exit", "result: %p", ret);
+
+	return ret;
+}
+
+/******************************************************************************/
+/*
+ * Begin malloc(3)-compatible functions.
+ */
+
+JEMALLOC_EXPORT JEMALLOC_ALLOCATOR JEMALLOC_RESTRICT_RETURN
+void JEMALLOC_NOTHROW *
+JEMALLOC_ATTR(malloc) JEMALLOC_ALLOC_SIZE(1)
+je_malloc(size_t size) {
+	return imalloc_fastpath(size, &malloc_default);
+}
+
+JEMALLOC_EXPORT int JEMALLOC_NOTHROW
+JEMALLOC_ATTR(nonnull(1))
+je_posix_memalign(void **memptr, size_t alignment, size_t size) {
+	int ret;
+	static_opts_t sopts;
+	dynamic_opts_t dopts;
+
+	LOG("core.posix_memalign.entry", "mem ptr: %p, alignment: %zu, "
+	    "size: %zu", memptr, alignment, size);
+
+	static_opts_init(&sopts);
+	dynamic_opts_init(&dopts);
+
+	sopts.bump_empty_aligned_alloc = true;
+	sopts.min_alignment = sizeof(void *);
+	sopts.oom_string =
+	    "<jemalloc>: Error allocating aligned memory: out of memory\n";
+	sopts.invalid_alignment_string =
+	    "<jemalloc>: Error allocating aligned memory: invalid alignment\n";
+
+	dopts.result = memptr;
+	dopts.num_items = 1;
+	dopts.item_size = size;
+	dopts.alignment = alignment;
+
+	ret = imalloc(&sopts, &dopts);
+	if (sopts.slow) {
+		uintptr_t args[3] = {(uintptr_t)memptr, (uintptr_t)alignment,
+			(uintptr_t)size};
+		hook_invoke_alloc(hook_alloc_posix_memalign, *memptr,
+		    (uintptr_t)ret, args);
+	}
+
+	LOG("core.posix_memalign.exit", "result: %d, alloc ptr: %p", ret,
+	    *memptr);
+
+	return ret;
+}
+
+JEMALLOC_EXPORT JEMALLOC_ALLOCATOR JEMALLOC_RESTRICT_RETURN
+void JEMALLOC_NOTHROW *
+JEMALLOC_ATTR(malloc) JEMALLOC_ALLOC_SIZE(2)
+je_aligned_alloc(size_t alignment, size_t size) {
+	void *ret;
+
+	static_opts_t sopts;
+	dynamic_opts_t dopts;
+
+	LOG("core.aligned_alloc.entry", "alignment: %zu, size: %zu\n",
+	    alignment, size);
+
+	static_opts_init(&sopts);
+	dynamic_opts_init(&dopts);
+
+	sopts.bump_empty_aligned_alloc = true;
+	sopts.null_out_result_on_error = true;
+	sopts.set_errno_on_error = true;
+	sopts.min_alignment = 1;
+	sopts.oom_string =
+	    "<jemalloc>: Error allocating aligned memory: out of memory\n";
+	sopts.invalid_alignment_string =
+	    "<jemalloc>: Error allocating aligned memory: invalid alignment\n";
+
+	dopts.result = &ret;
+	dopts.num_items = 1;
+	dopts.item_size = size;
+	dopts.alignment = alignment;
+
+	imalloc(&sopts, &dopts);
+	if (sopts.slow) {
+		uintptr_t args[3] = {(uintptr_t)alignment, (uintptr_t)size};
+		hook_invoke_alloc(hook_alloc_aligned_alloc, ret,
+		    (uintptr_t)ret, args);
+	}
+
+	LOG("core.aligned_alloc.exit", "result: %p", ret);
+
+	return ret;
+}
+
+JEMALLOC_EXPORT JEMALLOC_ALLOCATOR JEMALLOC_RESTRICT_RETURN
+void JEMALLOC_NOTHROW *
+JEMALLOC_ATTR(malloc) JEMALLOC_ALLOC_SIZE2(1, 2)
+je_calloc(size_t num, size_t size) {
+	void *ret;
+	static_opts_t sopts;
+	dynamic_opts_t dopts;
+
+	LOG("core.calloc.entry", "num: %zu, size: %zu\n", num, size);
+
+	static_opts_init(&sopts);
+	dynamic_opts_init(&dopts);
+
+	sopts.may_overflow = true;
+	sopts.null_out_result_on_error = true;
+	sopts.set_errno_on_error = true;
+	sopts.oom_string = "<jemalloc>: Error in calloc(): out of memory\n";
+
+	dopts.result = &ret;
+	dopts.num_items = num;
+	dopts.item_size = size;
+	dopts.zero = true;
+
+	imalloc(&sopts, &dopts);
+	if (sopts.slow) {
+		uintptr_t args[3] = {(uintptr_t)num, (uintptr_t)size};
+		hook_invoke_alloc(hook_alloc_calloc, ret, (uintptr_t)ret, args);
+	}
+
+	LOG("core.calloc.exit", "result: %p", ret);
+
+	return ret;
+}
+
+JEMALLOC_ALWAYS_INLINE void
+ifree(tsd_t *tsd, void *ptr, tcache_t *tcache, bool slow_path) {
+	if (!slow_path) {
+		tsd_assert_fast(tsd);
+	}
+	check_entry_exit_locking(tsd_tsdn(tsd));
+	if (tsd_reentrancy_level_get(tsd) != 0) {
+		assert(slow_path);
+	}
+
+	assert(ptr != NULL);
+	assert(malloc_initialized() || IS_INITIALIZER);
+
+	emap_alloc_ctx_t alloc_ctx;
+	emap_alloc_ctx_lookup(tsd_tsdn(tsd), &arena_emap_global, ptr,
+	    &alloc_ctx);
+	assert(alloc_ctx.szind != SC_NSIZES);
+
+	size_t usize = sz_index2size(alloc_ctx.szind);
+	if (config_prof && opt_prof) {
+		prof_free(tsd, ptr, usize, &alloc_ctx);
+	}
+
+	if (likely(!slow_path)) {
+		idalloctm(tsd_tsdn(tsd), ptr, tcache, &alloc_ctx, false,
+		    false);
+	} else {
+		if (config_fill && slow_path && opt_junk_free) {
+			junk_free_callback(ptr, usize);
+		}
+		idalloctm(tsd_tsdn(tsd), ptr, tcache, &alloc_ctx, false,
+		    true);
+	}
+	thread_dalloc_event(tsd, usize);
+}
+
+JEMALLOC_ALWAYS_INLINE bool
+maybe_check_alloc_ctx(tsd_t *tsd, void *ptr, emap_alloc_ctx_t *alloc_ctx) {
+	if (config_opt_size_checks) {
+		emap_alloc_ctx_t dbg_ctx;
+		emap_alloc_ctx_lookup(tsd_tsdn(tsd), &arena_emap_global, ptr,
+		    &dbg_ctx);
+		if (alloc_ctx->szind != dbg_ctx.szind) {
+			safety_check_fail_sized_dealloc(
+			    /* current_dealloc */ true, ptr,
+			    /* true_size */ sz_size2index(dbg_ctx.szind),
+			    /* input_size */ sz_size2index(alloc_ctx->szind));
+			return true;
+		}
+		if (alloc_ctx->slab != dbg_ctx.slab) {
+			safety_check_fail(
+			    "Internal heap corruption detected: "
+			    "mismatch in slab bit");
+			return true;
+		}
+	}
+	return false;
+}
+
+JEMALLOC_ALWAYS_INLINE void
+isfree(tsd_t *tsd, void *ptr, size_t usize, tcache_t *tcache, bool slow_path) {
+	if (!slow_path) {
+		tsd_assert_fast(tsd);
+	}
+	check_entry_exit_locking(tsd_tsdn(tsd));
+	if (tsd_reentrancy_level_get(tsd) != 0) {
+		assert(slow_path);
+	}
+
+	assert(ptr != NULL);
+	assert(malloc_initialized() || IS_INITIALIZER);
+
+	emap_alloc_ctx_t alloc_ctx;
+	if (!config_prof) {
+		alloc_ctx.szind = sz_size2index(usize);
+		alloc_ctx.slab = (alloc_ctx.szind < SC_NBINS);
+	} else {
+		if (likely(!prof_sample_aligned(ptr))) {
+			/*
+			 * When the ptr is not page aligned, it was not sampled.
+			 * usize can be trusted to determine szind and slab.
+			 */
+			alloc_ctx.szind = sz_size2index(usize);
+			alloc_ctx.slab = (alloc_ctx.szind < SC_NBINS);
+		} else if (opt_prof) {
+			emap_alloc_ctx_lookup(tsd_tsdn(tsd), &arena_emap_global,
+			    ptr, &alloc_ctx);
+
+			if (config_opt_safety_checks) {
+				/* Small alloc may have !slab (sampled). */
+				if (unlikely(alloc_ctx.szind !=
+				    sz_size2index(usize))) {
+					safety_check_fail_sized_dealloc(
+					    /* current_dealloc */ true, ptr,
+					    /* true_size */ sz_index2size(
+					    alloc_ctx.szind),
+					    /* input_size */ usize);
+				}
+			}
+		} else {
+			alloc_ctx.szind = sz_size2index(usize);
+			alloc_ctx.slab = (alloc_ctx.szind < SC_NBINS);
+		}
+	}
+	bool fail = maybe_check_alloc_ctx(tsd, ptr, &alloc_ctx);
+	if (fail) {
+		/*
+		 * This is a heap corruption bug.  In real life we'll crash; for
+		 * the unit test we just want to avoid breaking anything too
+		 * badly to get a test result out.  Let's leak instead of trying
+		 * to free.
+		 */
+		return;
+	}
+
+	if (config_prof && opt_prof) {
+		prof_free(tsd, ptr, usize, &alloc_ctx);
+	}
+	if (likely(!slow_path)) {
+		isdalloct(tsd_tsdn(tsd), ptr, usize, tcache, &alloc_ctx,
+		    false);
+	} else {
+		if (config_fill && slow_path && opt_junk_free) {
+			junk_free_callback(ptr, usize);
+		}
+		isdalloct(tsd_tsdn(tsd), ptr, usize, tcache, &alloc_ctx,
+		    true);
+	}
+	thread_dalloc_event(tsd, usize);
+}
+
+JEMALLOC_NOINLINE
+void
+free_default(void *ptr) {
+	UTRACE(ptr, 0, 0);
+	if (likely(ptr != NULL)) {
+		/*
+		 * We avoid setting up tsd fully (e.g. tcache, arena binding)
+		 * based on only free() calls -- other activities trigger the
+		 * minimal to full transition.  This is because free() may
+		 * happen during thread shutdown after tls deallocation: if a
+		 * thread never had any malloc activities until then, a
+		 * fully-setup tsd won't be destructed properly.
+		 */
+		tsd_t *tsd = tsd_fetch_min();
+		check_entry_exit_locking(tsd_tsdn(tsd));
+
+		if (likely(tsd_fast(tsd))) {
+			tcache_t *tcache = tcache_get_from_ind(tsd,
+			    TCACHE_IND_AUTOMATIC, /* slow */ false,
+			    /* is_alloc */ false);
+			ifree(tsd, ptr, tcache, /* slow */ false);
+		} else {
+			tcache_t *tcache = tcache_get_from_ind(tsd,
+			    TCACHE_IND_AUTOMATIC, /* slow */ true,
+			    /* is_alloc */ false);
+			uintptr_t args_raw[3] = {(uintptr_t)ptr};
+			hook_invoke_dalloc(hook_dalloc_free, ptr, args_raw);
+			ifree(tsd, ptr, tcache, /* slow */ true);
+		}
+
+		check_entry_exit_locking(tsd_tsdn(tsd));
+	}
+}
+
+JEMALLOC_ALWAYS_INLINE bool
+free_fastpath_nonfast_aligned(void *ptr, bool check_prof) {
+	/*
+	 * free_fastpath do not handle two uncommon cases: 1) sampled profiled
+	 * objects and 2) sampled junk & stash for use-after-free detection.
+	 * Both have special alignments which are used to escape the fastpath.
+	 *
+	 * prof_sample is page-aligned, which covers the UAF check when both
+	 * are enabled (the assertion below).  Avoiding redundant checks since
+	 * this is on the fastpath -- at most one runtime branch from this.
+	 */
+	if (config_debug && cache_bin_nonfast_aligned(ptr)) {
+		assert(prof_sample_aligned(ptr));
+	}
+
+	if (config_prof && check_prof) {
+		/* When prof is enabled, the prof_sample alignment is enough. */
+		if (prof_sample_aligned(ptr)) {
+			return true;
+		} else {
+			return false;
+		}
+	}
+
+	if (config_uaf_detection) {
+		if (cache_bin_nonfast_aligned(ptr)) {
+			return true;
+		} else {
+			return false;
+		}
+	}
+
+	return false;
+}
+
+/* Returns whether or not the free attempt was successful. */
+JEMALLOC_ALWAYS_INLINE
+bool free_fastpath(void *ptr, size_t size, bool size_hint) {
+	tsd_t *tsd = tsd_get(false);
+	/* The branch gets optimized away unless tsd_get_allocates(). */
+	if (unlikely(tsd == NULL)) {
+		return false;
+	}
+	/*
+	 *  The tsd_fast() / initialized checks are folded into the branch
+	 *  testing (deallocated_after >= threshold) later in this function.
+	 *  The threshold will be set to 0 when !tsd_fast.
+	 */
+	assert(tsd_fast(tsd) ||
+	    *tsd_thread_deallocated_next_event_fastp_get_unsafe(tsd) == 0);
+
+	emap_alloc_ctx_t alloc_ctx;
+	if (!size_hint) {
+		bool err = emap_alloc_ctx_try_lookup_fast(tsd,
+		    &arena_emap_global, ptr, &alloc_ctx);
+
+		/* Note: profiled objects will have alloc_ctx.slab set */
+		if (unlikely(err || !alloc_ctx.slab ||
+		    free_fastpath_nonfast_aligned(ptr,
+		    /* check_prof */ false))) {
+			return false;
+		}
+		assert(alloc_ctx.szind != SC_NSIZES);
+	} else {
+		/*
+		 * Check for both sizes that are too large, and for sampled /
+		 * special aligned objects.  The alignment check will also check
+		 * for null ptr.
+		 */
+		if (unlikely(size > SC_LOOKUP_MAXCLASS ||
+		    free_fastpath_nonfast_aligned(ptr,
+		    /* check_prof */ true))) {
+			return false;
+		}
+		alloc_ctx.szind = sz_size2index_lookup(size);
+		/* Max lookup class must be small. */
+		assert(alloc_ctx.szind < SC_NBINS);
+		/* This is a dead store, except when opt size checking is on. */
+		alloc_ctx.slab = true;
+	}
+	/*
+	 * Currently the fastpath only handles small sizes.  The branch on
+	 * SC_LOOKUP_MAXCLASS makes sure of it.  This lets us avoid checking
+	 * tcache szind upper limit (i.e. tcache_maxclass) as well.
+	 */
+	assert(alloc_ctx.slab);
+
+	uint64_t deallocated, threshold;
+	te_free_fastpath_ctx(tsd, &deallocated, &threshold);
+
+	size_t usize = sz_index2size(alloc_ctx.szind);
+	uint64_t deallocated_after = deallocated + usize;
+	/*
+	 * Check for events and tsd non-nominal (fast_threshold will be set to
+	 * 0) in a single branch.  Note that this handles the uninitialized case
+	 * as well (TSD init will be triggered on the non-fastpath).  Therefore
+	 * anything depends on a functional TSD (e.g. the alloc_ctx sanity check
+	 * below) needs to be after this branch.
+	 */
+	if (unlikely(deallocated_after >= threshold)) {
+		return false;
+	}
+	assert(tsd_fast(tsd));
+	bool fail = maybe_check_alloc_ctx(tsd, ptr, &alloc_ctx);
+	if (fail) {
+		/* See the comment in isfree. */
+		return true;
+	}
+
+	tcache_t *tcache = tcache_get_from_ind(tsd, TCACHE_IND_AUTOMATIC,
+	    /* slow */ false, /* is_alloc */ false);
+	cache_bin_t *bin = &tcache->bins[alloc_ctx.szind];
+
+	/*
+	 * If junking were enabled, this is where we would do it.  It's not
+	 * though, since we ensured above that we're on the fast path.  Assert
+	 * that to double-check.
+	 */
+	assert(!opt_junk_free);
+
+	if (!cache_bin_dalloc_easy(bin, ptr)) {
+		return false;
+	}
+
+	*tsd_thread_deallocatedp_get(tsd) = deallocated_after;
+
+	return true;
+}
+
+JEMALLOC_EXPORT void JEMALLOC_NOTHROW
+je_free(void *ptr) {
+	LOG("core.free.entry", "ptr: %p", ptr);
+
+	if (!free_fastpath(ptr, 0, false)) {
+		free_default(ptr);
+	}
+
+	LOG("core.free.exit", "");
+}
+
+/*
+ * End malloc(3)-compatible functions.
+ */
+/******************************************************************************/
+/*
+ * Begin non-standard override functions.
+ */
+
+#ifdef JEMALLOC_OVERRIDE_MEMALIGN
+JEMALLOC_EXPORT JEMALLOC_ALLOCATOR JEMALLOC_RESTRICT_RETURN
+void JEMALLOC_NOTHROW *
+JEMALLOC_ATTR(malloc)
+je_memalign(size_t alignment, size_t size) {
+	void *ret;
+	static_opts_t sopts;
+	dynamic_opts_t dopts;
+
+	LOG("core.memalign.entry", "alignment: %zu, size: %zu\n", alignment,
+	    size);
+
+	static_opts_init(&sopts);
+	dynamic_opts_init(&dopts);
+
+	sopts.min_alignment = 1;
+	sopts.oom_string =
+	    "<jemalloc>: Error allocating aligned memory: out of memory\n";
+	sopts.invalid_alignment_string =
+	    "<jemalloc>: Error allocating aligned memory: invalid alignment\n";
+	sopts.null_out_result_on_error = true;
+
+	dopts.result = &ret;
+	dopts.num_items = 1;
+	dopts.item_size = size;
+	dopts.alignment = alignment;
+
+	imalloc(&sopts, &dopts);
+	if (sopts.slow) {
+		uintptr_t args[3] = {alignment, size};
+		hook_invoke_alloc(hook_alloc_memalign, ret, (uintptr_t)ret,
+		    args);
+	}
+
+	LOG("core.memalign.exit", "result: %p", ret);
+	return ret;
+}
+#endif
+
+#ifdef JEMALLOC_OVERRIDE_VALLOC
+JEMALLOC_EXPORT JEMALLOC_ALLOCATOR JEMALLOC_RESTRICT_RETURN
+void JEMALLOC_NOTHROW *
+JEMALLOC_ATTR(malloc)
+je_valloc(size_t size) {
+	void *ret;
+
+	static_opts_t sopts;
+	dynamic_opts_t dopts;
+
+	LOG("core.valloc.entry", "size: %zu\n", size);
+
+	static_opts_init(&sopts);
+	dynamic_opts_init(&dopts);
+
+	sopts.null_out_result_on_error = true;
+	sopts.min_alignment = PAGE;
+	sopts.oom_string =
+	    "<jemalloc>: Error allocating aligned memory: out of memory\n";
+	sopts.invalid_alignment_string =
+	    "<jemalloc>: Error allocating aligned memory: invalid alignment\n";
+
+	dopts.result = &ret;
+	dopts.num_items = 1;
+	dopts.item_size = size;
+	dopts.alignment = PAGE;
+
+	imalloc(&sopts, &dopts);
+	if (sopts.slow) {
+		uintptr_t args[3] = {size};
+		hook_invoke_alloc(hook_alloc_valloc, ret, (uintptr_t)ret, args);
+	}
+
+	LOG("core.valloc.exit", "result: %p\n", ret);
+	return ret;
+}
+#endif
+
+#if defined(JEMALLOC_IS_MALLOC) && defined(JEMALLOC_GLIBC_MALLOC_HOOK)
+/*
+ * glibc provides the RTLD_DEEPBIND flag for dlopen which can make it possible
+ * to inconsistently reference libc's malloc(3)-compatible functions
+ * (https://bugzilla.mozilla.org/show_bug.cgi?id=493541).
+ *
+ * These definitions interpose hooks in glibc.  The functions are actually
+ * passed an extra argument for the caller return address, which will be
+ * ignored.
+ */
+#include <features.h> // defines __GLIBC__ if we are compiling against glibc
+
+JEMALLOC_EXPORT void (*__free_hook)(void *ptr) = je_free;
+JEMALLOC_EXPORT void *(*__malloc_hook)(size_t size) = je_malloc;
+JEMALLOC_EXPORT void *(*__realloc_hook)(void *ptr, size_t size) = je_realloc;
+#  ifdef JEMALLOC_GLIBC_MEMALIGN_HOOK
+JEMALLOC_EXPORT void *(*__memalign_hook)(size_t alignment, size_t size) =
+    je_memalign;
+#  endif
+
+#  ifdef __GLIBC__
+/*
+ * To enable static linking with glibc, the libc specific malloc interface must
+ * be implemented also, so none of glibc's malloc.o functions are added to the
+ * link.
+ */
+#    define ALIAS(je_fn)	__attribute__((alias (#je_fn), used))
+/* To force macro expansion of je_ prefix before stringification. */
+#    define PREALIAS(je_fn)	ALIAS(je_fn)
+#    ifdef JEMALLOC_OVERRIDE___LIBC_CALLOC
+void *__libc_calloc(size_t n, size_t size) PREALIAS(je_calloc);
+#    endif
+#    ifdef JEMALLOC_OVERRIDE___LIBC_FREE
+void __libc_free(void* ptr) PREALIAS(je_free);
+#    endif
+#    ifdef JEMALLOC_OVERRIDE___LIBC_MALLOC
+void *__libc_malloc(size_t size) PREALIAS(je_malloc);
+#    endif
+#    ifdef JEMALLOC_OVERRIDE___LIBC_MEMALIGN
+void *__libc_memalign(size_t align, size_t s) PREALIAS(je_memalign);
+#    endif
+#    ifdef JEMALLOC_OVERRIDE___LIBC_REALLOC
+void *__libc_realloc(void* ptr, size_t size) PREALIAS(je_realloc);
+#    endif
+#    ifdef JEMALLOC_OVERRIDE___LIBC_VALLOC
+void *__libc_valloc(size_t size) PREALIAS(je_valloc);
+#    endif
+#    ifdef JEMALLOC_OVERRIDE___POSIX_MEMALIGN
+int __posix_memalign(void** r, size_t a, size_t s) PREALIAS(je_posix_memalign);
+#    endif
+#    undef PREALIAS
+#    undef ALIAS
+#  endif
+#endif
+
+/*
+ * End non-standard override functions.
+ */
+/******************************************************************************/
+/*
+ * Begin non-standard functions.
+ */
+
+JEMALLOC_ALWAYS_INLINE unsigned
+mallocx_tcache_get(int flags) {
+	if (likely((flags & MALLOCX_TCACHE_MASK) == 0)) {
+		return TCACHE_IND_AUTOMATIC;
+	} else if ((flags & MALLOCX_TCACHE_MASK) == MALLOCX_TCACHE_NONE) {
+		return TCACHE_IND_NONE;
+	} else {
+		return MALLOCX_TCACHE_GET(flags);
+	}
+}
+
+JEMALLOC_ALWAYS_INLINE unsigned
+mallocx_arena_get(int flags) {
+	if (unlikely((flags & MALLOCX_ARENA_MASK) != 0)) {
+		return MALLOCX_ARENA_GET(flags);
+	} else {
+		return ARENA_IND_AUTOMATIC;
+	}
+}
+
+#ifdef JEMALLOC_EXPERIMENTAL_SMALLOCX_API
+
+#define JEMALLOC_SMALLOCX_CONCAT_HELPER(x, y) x ## y
+#define JEMALLOC_SMALLOCX_CONCAT_HELPER2(x, y)  \
+  JEMALLOC_SMALLOCX_CONCAT_HELPER(x, y)
+
+typedef struct {
+	void *ptr;
+	size_t size;
+} smallocx_return_t;
+
+JEMALLOC_EXPORT JEMALLOC_ALLOCATOR JEMALLOC_RESTRICT_RETURN
+smallocx_return_t JEMALLOC_NOTHROW
+/*
+ * The attribute JEMALLOC_ATTR(malloc) cannot be used due to:
+ *  - https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86488
+ */
+JEMALLOC_SMALLOCX_CONCAT_HELPER2(je_smallocx_, JEMALLOC_VERSION_GID_IDENT)
+  (size_t size, int flags) {
+	/*
+	 * Note: the attribute JEMALLOC_ALLOC_SIZE(1) cannot be
+	 * used here because it makes writing beyond the `size`
+	 * of the `ptr` undefined behavior, but the objective
+	 * of this function is to allow writing beyond `size`
+	 * up to `smallocx_return_t::size`.
+	 */
+	smallocx_return_t ret;
+	static_opts_t sopts;
+	dynamic_opts_t dopts;
+
+	LOG("core.smallocx.entry", "size: %zu, flags: %d", size, flags);
+
+	static_opts_init(&sopts);
+	dynamic_opts_init(&dopts);
+
+	sopts.assert_nonempty_alloc = true;
+	sopts.null_out_result_on_error = true;
+	sopts.oom_string = "<jemalloc>: Error in mallocx(): out of memory\n";
+	sopts.usize = true;
+
+	dopts.result = &ret.ptr;
+	dopts.num_items = 1;
+	dopts.item_size = size;
+	if (unlikely(flags != 0)) {
+		dopts.alignment = MALLOCX_ALIGN_GET(flags);
+		dopts.zero = MALLOCX_ZERO_GET(flags);
+		dopts.tcache_ind = mallocx_tcache_get(flags);
+		dopts.arena_ind = mallocx_arena_get(flags);
+	}
+
+	imalloc(&sopts, &dopts);
+	assert(dopts.usize == je_nallocx(size, flags));
+	ret.size = dopts.usize;
+
+	LOG("core.smallocx.exit", "result: %p, size: %zu", ret.ptr, ret.size);
+	return ret;
+}
+#undef JEMALLOC_SMALLOCX_CONCAT_HELPER
+#undef JEMALLOC_SMALLOCX_CONCAT_HELPER2
+#endif
+
+JEMALLOC_EXPORT JEMALLOC_ALLOCATOR JEMALLOC_RESTRICT_RETURN
+void JEMALLOC_NOTHROW *
+JEMALLOC_ATTR(malloc) JEMALLOC_ALLOC_SIZE(1)
+je_mallocx(size_t size, int flags) {
+	void *ret;
+	static_opts_t sopts;
+	dynamic_opts_t dopts;
+
+	LOG("core.mallocx.entry", "size: %zu, flags: %d", size, flags);
+
+	static_opts_init(&sopts);
+	dynamic_opts_init(&dopts);
+
+	sopts.assert_nonempty_alloc = true;
+	sopts.null_out_result_on_error = true;
+	sopts.oom_string = "<jemalloc>: Error in mallocx(): out of memory\n";
+
+	dopts.result = &ret;
+	dopts.num_items = 1;
+	dopts.item_size = size;
+	if (unlikely(flags != 0)) {
+		dopts.alignment = MALLOCX_ALIGN_GET(flags);
+		dopts.zero = MALLOCX_ZERO_GET(flags);
+		dopts.tcache_ind = mallocx_tcache_get(flags);
+		dopts.arena_ind = mallocx_arena_get(flags);
+	}
+
+	imalloc(&sopts, &dopts);
+	if (sopts.slow) {
+		uintptr_t args[3] = {size, flags};
+		hook_invoke_alloc(hook_alloc_mallocx, ret, (uintptr_t)ret,
+		    args);
+	}
+
+	LOG("core.mallocx.exit", "result: %p", ret);
+	return ret;
+}
+
+static void *
+irallocx_prof_sample(tsdn_t *tsdn, void *old_ptr, size_t old_usize,
+    size_t usize, size_t alignment, bool zero, tcache_t *tcache, arena_t *arena,
+    prof_tctx_t *tctx, hook_ralloc_args_t *hook_args) {
+	void *p;
+
+	if (tctx == NULL) {
+		return NULL;
+	}
+
+	alignment = prof_sample_align(alignment);
+	if (usize <= SC_SMALL_MAXCLASS) {
+		p = iralloct(tsdn, old_ptr, old_usize,
+		    SC_LARGE_MINCLASS, alignment, zero, tcache,
+		    arena, hook_args);
+		if (p == NULL) {
+			return NULL;
+		}
+		arena_prof_promote(tsdn, p, usize);
+	} else {
+		p = iralloct(tsdn, old_ptr, old_usize, usize, alignment, zero,
+		    tcache, arena, hook_args);
+	}
+	assert(prof_sample_aligned(p));
+
+	return p;
+}
+
+JEMALLOC_ALWAYS_INLINE void *
+irallocx_prof(tsd_t *tsd, void *old_ptr, size_t old_usize, size_t size,
+    size_t alignment, size_t usize, bool zero, tcache_t *tcache,
+    arena_t *arena, emap_alloc_ctx_t *alloc_ctx,
+    hook_ralloc_args_t *hook_args) {
+	prof_info_t old_prof_info;
+	prof_info_get_and_reset_recent(tsd, old_ptr, alloc_ctx, &old_prof_info);
+	bool prof_active = prof_active_get_unlocked();
+	bool sample_event = te_prof_sample_event_lookahead(tsd, usize);
+	prof_tctx_t *tctx = prof_alloc_prep(tsd, prof_active, sample_event);
+	void *p;
+	if (unlikely((uintptr_t)tctx != (uintptr_t)1U)) {
+		p = irallocx_prof_sample(tsd_tsdn(tsd), old_ptr, old_usize,
+		    usize, alignment, zero, tcache, arena, tctx, hook_args);
+	} else {
+		p = iralloct(tsd_tsdn(tsd), old_ptr, old_usize, size, alignment,
+		    zero, tcache, arena, hook_args);
+	}
+	if (unlikely(p == NULL)) {
+		prof_alloc_rollback(tsd, tctx);
+		return NULL;
+	}
+	assert(usize == isalloc(tsd_tsdn(tsd), p));
+	prof_realloc(tsd, p, size, usize, tctx, prof_active, old_ptr,
+	    old_usize, &old_prof_info, sample_event);
+
+	return p;
+}
+
+static void *
+do_rallocx(void *ptr, size_t size, int flags, bool is_realloc) {
+	void *p;
+	tsd_t *tsd;
+	size_t usize;
+	size_t old_usize;
+	size_t alignment = MALLOCX_ALIGN_GET(flags);
+	arena_t *arena;
+
+	assert(ptr != NULL);
+	assert(size != 0);
+	assert(malloc_initialized() || IS_INITIALIZER);
+	tsd = tsd_fetch();
+	check_entry_exit_locking(tsd_tsdn(tsd));
+
+	bool zero = zero_get(MALLOCX_ZERO_GET(flags), /* slow */ true);
+
+	unsigned arena_ind = mallocx_arena_get(flags);
+	if (arena_get_from_ind(tsd, arena_ind, &arena)) {
+		goto label_oom;
+	}
+
+	unsigned tcache_ind = mallocx_tcache_get(flags);
+	tcache_t *tcache = tcache_get_from_ind(tsd, tcache_ind,
+	    /* slow */ true, /* is_alloc */ true);
+
+	emap_alloc_ctx_t alloc_ctx;
+	emap_alloc_ctx_lookup(tsd_tsdn(tsd), &arena_emap_global, ptr,
+	    &alloc_ctx);
+	assert(alloc_ctx.szind != SC_NSIZES);
+	old_usize = sz_index2size(alloc_ctx.szind);
+	assert(old_usize == isalloc(tsd_tsdn(tsd), ptr));
+	if (aligned_usize_get(size, alignment, &usize, NULL, false)) {
+		goto label_oom;
+	}
+
+	hook_ralloc_args_t hook_args = {is_realloc, {(uintptr_t)ptr, size,
+		flags, 0}};
+	if (config_prof && opt_prof) {
+		p = irallocx_prof(tsd, ptr, old_usize, size, alignment, usize,
+		    zero, tcache, arena, &alloc_ctx, &hook_args);
+		if (unlikely(p == NULL)) {
+			goto label_oom;
+		}
+	} else {
+		p = iralloct(tsd_tsdn(tsd), ptr, old_usize, size, alignment,
+		    zero, tcache, arena, &hook_args);
+		if (unlikely(p == NULL)) {
+			goto label_oom;
+		}
+		assert(usize == isalloc(tsd_tsdn(tsd), p));
+	}
+	assert(alignment == 0 || ((uintptr_t)p & (alignment - 1)) == ZU(0));
+	thread_alloc_event(tsd, usize);
+	thread_dalloc_event(tsd, old_usize);
+
+	UTRACE(ptr, size, p);
+	check_entry_exit_locking(tsd_tsdn(tsd));
+
+	if (config_fill && unlikely(opt_junk_alloc) && usize > old_usize
+	    && !zero) {
+		size_t excess_len = usize - old_usize;
+		void *excess_start = (void *)((uintptr_t)p + old_usize);
+		junk_alloc_callback(excess_start, excess_len);
+	}
+
+	return p;
+label_oom:
+	if (config_xmalloc && unlikely(opt_xmalloc)) {
+		malloc_write("<jemalloc>: Error in rallocx(): out of memory\n");
+		abort();
+	}
+	UTRACE(ptr, size, 0);
+	check_entry_exit_locking(tsd_tsdn(tsd));
+
+	return NULL;
+}
+
+JEMALLOC_EXPORT JEMALLOC_ALLOCATOR JEMALLOC_RESTRICT_RETURN
+void JEMALLOC_NOTHROW *
+JEMALLOC_ALLOC_SIZE(2)
+je_rallocx(void *ptr, size_t size, int flags) {
+	LOG("core.rallocx.entry", "ptr: %p, size: %zu, flags: %d", ptr,
+	    size, flags);
+	void *ret = do_rallocx(ptr, size, flags, false);
+	LOG("core.rallocx.exit", "result: %p", ret);
+	return ret;
+}
+
+static void *
+do_realloc_nonnull_zero(void *ptr) {
+	if (config_stats) {
+		atomic_fetch_add_zu(&zero_realloc_count, 1, ATOMIC_RELAXED);
+	}
+	if (opt_zero_realloc_action == zero_realloc_action_alloc) {
+		/*
+		 * The user might have gotten an alloc setting while expecting a
+		 * free setting.  If that's the case, we at least try to
+		 * reduce the harm, and turn off the tcache while allocating, so
+		 * that we'll get a true first fit.
+		 */
+		return do_rallocx(ptr, 1, MALLOCX_TCACHE_NONE, true);
+	} else if (opt_zero_realloc_action == zero_realloc_action_free) {
+		UTRACE(ptr, 0, 0);
+		tsd_t *tsd = tsd_fetch();
+		check_entry_exit_locking(tsd_tsdn(tsd));
+
+		tcache_t *tcache = tcache_get_from_ind(tsd,
+		    TCACHE_IND_AUTOMATIC, /* slow */ true,
+		    /* is_alloc */ false);
+		uintptr_t args[3] = {(uintptr_t)ptr, 0};
+		hook_invoke_dalloc(hook_dalloc_realloc, ptr, args);
+		ifree(tsd, ptr, tcache, true);
+
+		check_entry_exit_locking(tsd_tsdn(tsd));
+		return NULL;
+	} else {
+		safety_check_fail("Called realloc(non-null-ptr, 0) with "
+		    "zero_realloc:abort set\n");
+		/* In real code, this will never run; the safety check failure
+		 * will call abort.  In the unit test, we just want to bail out
+		 * without corrupting internal state that the test needs to
+		 * finish.
+		 */
+		return NULL;
+	}
+}
+
+JEMALLOC_EXPORT JEMALLOC_ALLOCATOR JEMALLOC_RESTRICT_RETURN
+void JEMALLOC_NOTHROW *
+JEMALLOC_ALLOC_SIZE(2)
+je_realloc(void *ptr, size_t size) {
+	LOG("core.realloc.entry", "ptr: %p, size: %zu\n", ptr, size);
+
+	if (likely(ptr != NULL && size != 0)) {
+		void *ret = do_rallocx(ptr, size, 0, true);
+		LOG("core.realloc.exit", "result: %p", ret);
+		return ret;
+	} else if (ptr != NULL && size == 0) {
+		void *ret = do_realloc_nonnull_zero(ptr);
+		LOG("core.realloc.exit", "result: %p", ret);
+		return ret;
+	} else {
+		/* realloc(NULL, size) is equivalent to malloc(size). */
+		void *ret;
+
+		static_opts_t sopts;
+		dynamic_opts_t dopts;
+
+		static_opts_init(&sopts);
+		dynamic_opts_init(&dopts);
+
+		sopts.null_out_result_on_error = true;
+		sopts.set_errno_on_error = true;
+		sopts.oom_string =
+		    "<jemalloc>: Error in realloc(): out of memory\n";
+
+		dopts.result = &ret;
+		dopts.num_items = 1;
+		dopts.item_size = size;
+
+		imalloc(&sopts, &dopts);
+		if (sopts.slow) {
+			uintptr_t args[3] = {(uintptr_t)ptr, size};
+			hook_invoke_alloc(hook_alloc_realloc, ret,
+			    (uintptr_t)ret, args);
+		}
+		LOG("core.realloc.exit", "result: %p", ret);
+		return ret;
+	}
+}
+
+JEMALLOC_ALWAYS_INLINE size_t
+ixallocx_helper(tsdn_t *tsdn, void *ptr, size_t old_usize, size_t size,
+    size_t extra, size_t alignment, bool zero) {
+	size_t newsize;
+
+	if (ixalloc(tsdn, ptr, old_usize, size, extra, alignment, zero,
+	    &newsize)) {
+		return old_usize;
+	}
+
+	return newsize;
+}
+
+static size_t
+ixallocx_prof_sample(tsdn_t *tsdn, void *ptr, size_t old_usize, size_t size,
+    size_t extra, size_t alignment, bool zero, prof_tctx_t *tctx) {
+	/* Sampled allocation needs to be page aligned. */
+	if (tctx == NULL || !prof_sample_aligned(ptr)) {
+		return old_usize;
+	}
+
+	return ixallocx_helper(tsdn, ptr, old_usize, size, extra, alignment,
+	    zero);
+}
+
+JEMALLOC_ALWAYS_INLINE size_t
+ixallocx_prof(tsd_t *tsd, void *ptr, size_t old_usize, size_t size,
+    size_t extra, size_t alignment, bool zero, emap_alloc_ctx_t *alloc_ctx) {
+	/*
+	 * old_prof_info is only used for asserting that the profiling info
+	 * isn't changed by the ixalloc() call.
+	 */
+	prof_info_t old_prof_info;
+	prof_info_get(tsd, ptr, alloc_ctx, &old_prof_info);
+
+	/*
+	 * usize isn't knowable before ixalloc() returns when extra is non-zero.
+	 * Therefore, compute its maximum possible value and use that in
+	 * prof_alloc_prep() to decide whether to capture a backtrace.
+	 * prof_realloc() will use the actual usize to decide whether to sample.
+	 */
+	size_t usize_max;
+	if (aligned_usize_get(size + extra, alignment, &usize_max, NULL,
+	    false)) {
+		/*
+		 * usize_max is out of range, and chances are that allocation
+		 * will fail, but use the maximum possible value and carry on
+		 * with prof_alloc_prep(), just in case allocation succeeds.
+		 */
+		usize_max = SC_LARGE_MAXCLASS;
+	}
+	bool prof_active = prof_active_get_unlocked();
+	bool sample_event = te_prof_sample_event_lookahead(tsd, usize_max);
+	prof_tctx_t *tctx = prof_alloc_prep(tsd, prof_active, sample_event);
+
+	size_t usize;
+	if (unlikely((uintptr_t)tctx != (uintptr_t)1U)) {
+		usize = ixallocx_prof_sample(tsd_tsdn(tsd), ptr, old_usize,
+		    size, extra, alignment, zero, tctx);
+	} else {
+		usize = ixallocx_helper(tsd_tsdn(tsd), ptr, old_usize, size,
+		    extra, alignment, zero);
+	}
+
+	/*
+	 * At this point we can still safely get the original profiling
+	 * information associated with the ptr, because (a) the edata_t object
+	 * associated with the ptr still lives and (b) the profiling info
+	 * fields are not touched.  "(a)" is asserted in the outer je_xallocx()
+	 * function, and "(b)" is indirectly verified below by checking that
+	 * the alloc_tctx field is unchanged.
+	 */
+	prof_info_t prof_info;
+	if (usize == old_usize) {
+		prof_info_get(tsd, ptr, alloc_ctx, &prof_info);
+		prof_alloc_rollback(tsd, tctx);
+	} else {
+		prof_info_get_and_reset_recent(tsd, ptr, alloc_ctx, &prof_info);
+		assert(usize <= usize_max);
+		sample_event = te_prof_sample_event_lookahead(tsd, usize);
+		prof_realloc(tsd, ptr, size, usize, tctx, prof_active, ptr,
+		    old_usize, &prof_info, sample_event);
+	}
+
+	assert(old_prof_info.alloc_tctx == prof_info.alloc_tctx);
+	return usize;
+}
+
+JEMALLOC_EXPORT size_t JEMALLOC_NOTHROW
+je_xallocx(void *ptr, size_t size, size_t extra, int flags) {
+	tsd_t *tsd;
+	size_t usize, old_usize;
+	size_t alignment = MALLOCX_ALIGN_GET(flags);
+	bool zero = zero_get(MALLOCX_ZERO_GET(flags), /* slow */ true);
+
+	LOG("core.xallocx.entry", "ptr: %p, size: %zu, extra: %zu, "
+	    "flags: %d", ptr, size, extra, flags);
+
+	assert(ptr != NULL);
+	assert(size != 0);
+	assert(SIZE_T_MAX - size >= extra);
+	assert(malloc_initialized() || IS_INITIALIZER);
+	tsd = tsd_fetch();
+	check_entry_exit_locking(tsd_tsdn(tsd));
+
+	/*
+	 * old_edata is only for verifying that xallocx() keeps the edata_t
+	 * object associated with the ptr (though the content of the edata_t
+	 * object can be changed).
+	 */
+	edata_t *old_edata = emap_edata_lookup(tsd_tsdn(tsd),
+	    &arena_emap_global, ptr);
+
+	emap_alloc_ctx_t alloc_ctx;
+	emap_alloc_ctx_lookup(tsd_tsdn(tsd), &arena_emap_global, ptr,
+	    &alloc_ctx);
+	assert(alloc_ctx.szind != SC_NSIZES);
+	old_usize = sz_index2size(alloc_ctx.szind);
+	assert(old_usize == isalloc(tsd_tsdn(tsd), ptr));
+	/*
+	 * The API explicitly absolves itself of protecting against (size +
+	 * extra) numerical overflow, but we may need to clamp extra to avoid
+	 * exceeding SC_LARGE_MAXCLASS.
+	 *
+	 * Ordinarily, size limit checking is handled deeper down, but here we
+	 * have to check as part of (size + extra) clamping, since we need the
+	 * clamped value in the above helper functions.
+	 */
+	if (unlikely(size > SC_LARGE_MAXCLASS)) {
+		usize = old_usize;
+		goto label_not_resized;
+	}
+	if (unlikely(SC_LARGE_MAXCLASS - size < extra)) {
+		extra = SC_LARGE_MAXCLASS - size;
+	}
+
+	if (config_prof && opt_prof) {
+		usize = ixallocx_prof(tsd, ptr, old_usize, size, extra,
+		    alignment, zero, &alloc_ctx);
+	} else {
+		usize = ixallocx_helper(tsd_tsdn(tsd), ptr, old_usize, size,
+		    extra, alignment, zero);
+	}
+
+	/*
+	 * xallocx() should keep using the same edata_t object (though its
+	 * content can be changed).
+	 */
+	assert(emap_edata_lookup(tsd_tsdn(tsd), &arena_emap_global, ptr)
+	    == old_edata);
+
+	if (unlikely(usize == old_usize)) {
+		goto label_not_resized;
+	}
+	thread_alloc_event(tsd, usize);
+	thread_dalloc_event(tsd, old_usize);
+
+	if (config_fill && unlikely(opt_junk_alloc) && usize > old_usize &&
+	    !zero) {
+		size_t excess_len = usize - old_usize;
+		void *excess_start = (void *)((uintptr_t)ptr + old_usize);
+		junk_alloc_callback(excess_start, excess_len);
+	}
+label_not_resized:
+	if (unlikely(!tsd_fast(tsd))) {
+		uintptr_t args[4] = {(uintptr_t)ptr, size, extra, flags};
+		hook_invoke_expand(hook_expand_xallocx, ptr, old_usize,
+		    usize, (uintptr_t)usize, args);
+	}
+
+	UTRACE(ptr, size, ptr);
+	check_entry_exit_locking(tsd_tsdn(tsd));
+
+	LOG("core.xallocx.exit", "result: %zu", usize);
+	return usize;
+}
+
+JEMALLOC_EXPORT size_t JEMALLOC_NOTHROW
+JEMALLOC_ATTR(pure)
+je_sallocx(const void *ptr, int flags) {
+	size_t usize;
+	tsdn_t *tsdn;
+
+	LOG("core.sallocx.entry", "ptr: %p, flags: %d", ptr, flags);
+
+	assert(malloc_initialized() || IS_INITIALIZER);
+	assert(ptr != NULL);
+
+	tsdn = tsdn_fetch();
+	check_entry_exit_locking(tsdn);
+
+	if (config_debug || force_ivsalloc) {
+		usize = ivsalloc(tsdn, ptr);
+		assert(force_ivsalloc || usize != 0);
+	} else {
+		usize = isalloc(tsdn, ptr);
+	}
+
+	check_entry_exit_locking(tsdn);
+
+	LOG("core.sallocx.exit", "result: %zu", usize);
+	return usize;
+}
+
+JEMALLOC_EXPORT void JEMALLOC_NOTHROW
+je_dallocx(void *ptr, int flags) {
+	LOG("core.dallocx.entry", "ptr: %p, flags: %d", ptr, flags);
+
+	assert(ptr != NULL);
+	assert(malloc_initialized() || IS_INITIALIZER);
+
+	tsd_t *tsd = tsd_fetch_min();
+	bool fast = tsd_fast(tsd);
+	check_entry_exit_locking(tsd_tsdn(tsd));
+
+	unsigned tcache_ind = mallocx_tcache_get(flags);
+	tcache_t *tcache = tcache_get_from_ind(tsd, tcache_ind, !fast,
+	    /* is_alloc */ false);
+
+	UTRACE(ptr, 0, 0);
+	if (likely(fast)) {
+		tsd_assert_fast(tsd);
+		ifree(tsd, ptr, tcache, false);
+	} else {
+		uintptr_t args_raw[3] = {(uintptr_t)ptr, flags};
+		hook_invoke_dalloc(hook_dalloc_dallocx, ptr, args_raw);
+		ifree(tsd, ptr, tcache, true);
+	}
+	check_entry_exit_locking(tsd_tsdn(tsd));
+
+	LOG("core.dallocx.exit", "");
+}
+
+JEMALLOC_ALWAYS_INLINE size_t
+inallocx(tsdn_t *tsdn, size_t size, int flags) {
+	check_entry_exit_locking(tsdn);
+	size_t usize;
+	/* In case of out of range, let the user see it rather than fail. */
+	aligned_usize_get(size, MALLOCX_ALIGN_GET(flags), &usize, NULL, false);
+	check_entry_exit_locking(tsdn);
+	return usize;
+}
+
+JEMALLOC_NOINLINE void
+sdallocx_default(void *ptr, size_t size, int flags) {
+	assert(ptr != NULL);
+	assert(malloc_initialized() || IS_INITIALIZER);
+
+	tsd_t *tsd = tsd_fetch_min();
+	bool fast = tsd_fast(tsd);
+	size_t usize = inallocx(tsd_tsdn(tsd), size, flags);
+	check_entry_exit_locking(tsd_tsdn(tsd));
+
+	unsigned tcache_ind = mallocx_tcache_get(flags);
+	tcache_t *tcache = tcache_get_from_ind(tsd, tcache_ind, !fast,
+	    /* is_alloc */ false);
+
+	UTRACE(ptr, 0, 0);
+	if (likely(fast)) {
+		tsd_assert_fast(tsd);
+		isfree(tsd, ptr, usize, tcache, false);
+	} else {
+		uintptr_t args_raw[3] = {(uintptr_t)ptr, size, flags};
+		hook_invoke_dalloc(hook_dalloc_sdallocx, ptr, args_raw);
+		isfree(tsd, ptr, usize, tcache, true);
+	}
+	check_entry_exit_locking(tsd_tsdn(tsd));
+}
+
+JEMALLOC_EXPORT void JEMALLOC_NOTHROW
+je_sdallocx(void *ptr, size_t size, int flags) {
+	LOG("core.sdallocx.entry", "ptr: %p, size: %zu, flags: %d", ptr,
+		size, flags);
+
+	if (flags != 0 || !free_fastpath(ptr, size, true)) {
+		sdallocx_default(ptr, size, flags);
+	}
+
+	LOG("core.sdallocx.exit", "");
+}
+
+void JEMALLOC_NOTHROW
+je_sdallocx_noflags(void *ptr, size_t size) {
+	LOG("core.sdallocx.entry", "ptr: %p, size: %zu, flags: 0", ptr,
+		size);
+
+	if (!free_fastpath(ptr, size, true)) {
+		sdallocx_default(ptr, size, 0);
+	}
+
+	LOG("core.sdallocx.exit", "");
+}
+
+JEMALLOC_EXPORT size_t JEMALLOC_NOTHROW
+JEMALLOC_ATTR(pure)
+je_nallocx(size_t size, int flags) {
+	size_t usize;
+	tsdn_t *tsdn;
+
+	assert(size != 0);
+
+	if (unlikely(malloc_init())) {
+		LOG("core.nallocx.exit", "result: %zu", ZU(0));
+		return 0;
+	}
+
+	tsdn = tsdn_fetch();
+	check_entry_exit_locking(tsdn);
+
+	usize = inallocx(tsdn, size, flags);
+	if (unlikely(usize > SC_LARGE_MAXCLASS)) {
+		LOG("core.nallocx.exit", "result: %zu", ZU(0));
+		return 0;
+	}
+
+	check_entry_exit_locking(tsdn);
+	LOG("core.nallocx.exit", "result: %zu", usize);
+	return usize;
+}
+
+JEMALLOC_EXPORT int JEMALLOC_NOTHROW
+je_mallctl(const char *name, void *oldp, size_t *oldlenp, void *newp,
+    size_t newlen) {
+	int ret;
+	tsd_t *tsd;
+
+	LOG("core.mallctl.entry", "name: %s", name);
+
+	if (unlikely(malloc_init())) {
+		LOG("core.mallctl.exit", "result: %d", EAGAIN);
+		return EAGAIN;
+	}
+
+	tsd = tsd_fetch();
+	check_entry_exit_locking(tsd_tsdn(tsd));
+	ret = ctl_byname(tsd, name, oldp, oldlenp, newp, newlen);
+	check_entry_exit_locking(tsd_tsdn(tsd));
+
+	LOG("core.mallctl.exit", "result: %d", ret);
+	return ret;
+}
+
+JEMALLOC_EXPORT int JEMALLOC_NOTHROW
+je_mallctlnametomib(const char *name, size_t *mibp, size_t *miblenp) {
+	int ret;
+
+	LOG("core.mallctlnametomib.entry", "name: %s", name);
+
+	if (unlikely(malloc_init())) {
+		LOG("core.mallctlnametomib.exit", "result: %d", EAGAIN);
+		return EAGAIN;
+	}
+
+	tsd_t *tsd = tsd_fetch();
+	check_entry_exit_locking(tsd_tsdn(tsd));
+	ret = ctl_nametomib(tsd, name, mibp, miblenp);
+	check_entry_exit_locking(tsd_tsdn(tsd));
+
+	LOG("core.mallctlnametomib.exit", "result: %d", ret);
+	return ret;
+}
+
+JEMALLOC_EXPORT int JEMALLOC_NOTHROW
+je_mallctlbymib(const size_t *mib, size_t miblen, void *oldp, size_t *oldlenp,
+  void *newp, size_t newlen) {
+	int ret;
+	tsd_t *tsd;
+
+	LOG("core.mallctlbymib.entry", "");
+
+	if (unlikely(malloc_init())) {
+		LOG("core.mallctlbymib.exit", "result: %d", EAGAIN);
+		return EAGAIN;
+	}
+
+	tsd = tsd_fetch();
+	check_entry_exit_locking(tsd_tsdn(tsd));
+	ret = ctl_bymib(tsd, mib, miblen, oldp, oldlenp, newp, newlen);
+	check_entry_exit_locking(tsd_tsdn(tsd));
+	LOG("core.mallctlbymib.exit", "result: %d", ret);
+	return ret;
+}
+
+#define STATS_PRINT_BUFSIZE 65536
+JEMALLOC_EXPORT void JEMALLOC_NOTHROW
+je_malloc_stats_print(void (*write_cb)(void *, const char *), void *cbopaque,
+    const char *opts) {
+	tsdn_t *tsdn;
+
+	LOG("core.malloc_stats_print.entry", "");
+
+	tsdn = tsdn_fetch();
+	check_entry_exit_locking(tsdn);
+
+	if (config_debug) {
+		stats_print(write_cb, cbopaque, opts);
+	} else {
+		buf_writer_t buf_writer;
+		buf_writer_init(tsdn, &buf_writer, write_cb, cbopaque, NULL,
+		    STATS_PRINT_BUFSIZE);
+		stats_print(buf_writer_cb, &buf_writer, opts);
+		buf_writer_terminate(tsdn, &buf_writer);
+	}
+
+	check_entry_exit_locking(tsdn);
+	LOG("core.malloc_stats_print.exit", "");
+}
+#undef STATS_PRINT_BUFSIZE
+
+JEMALLOC_ALWAYS_INLINE size_t
+je_malloc_usable_size_impl(JEMALLOC_USABLE_SIZE_CONST void *ptr) {
+	assert(malloc_initialized() || IS_INITIALIZER);
+
+	tsdn_t *tsdn = tsdn_fetch();
+	check_entry_exit_locking(tsdn);
+
+	size_t ret;
+	if (unlikely(ptr == NULL)) {
+		ret = 0;
+	} else {
+		if (config_debug || force_ivsalloc) {
+			ret = ivsalloc(tsdn, ptr);
+			assert(force_ivsalloc || ret != 0);
+		} else {
+			ret = isalloc(tsdn, ptr);
+		}
+	}
+	check_entry_exit_locking(tsdn);
+
+	return ret;
+}
+
+JEMALLOC_EXPORT size_t JEMALLOC_NOTHROW
+je_malloc_usable_size(JEMALLOC_USABLE_SIZE_CONST void *ptr) {
+	LOG("core.malloc_usable_size.entry", "ptr: %p", ptr);
+
+	size_t ret = je_malloc_usable_size_impl(ptr);
+
+	LOG("core.malloc_usable_size.exit", "result: %zu", ret);
+	return ret;
+}
+
+#ifdef JEMALLOC_HAVE_MALLOC_SIZE
+JEMALLOC_EXPORT size_t JEMALLOC_NOTHROW
+je_malloc_size(const void *ptr) {
+	LOG("core.malloc_size.entry", "ptr: %p", ptr);
+
+	size_t ret = je_malloc_usable_size_impl(ptr);
+
+	LOG("core.malloc_size.exit", "result: %zu", ret);
+	return ret;
+}
+#endif
+
+static void
+batch_alloc_prof_sample_assert(tsd_t *tsd, size_t batch, size_t usize) {
+	assert(config_prof && opt_prof);
+	bool prof_sample_event = te_prof_sample_event_lookahead(tsd,
+	    batch * usize);
+	assert(!prof_sample_event);
+	size_t surplus;
+	prof_sample_event = te_prof_sample_event_lookahead_surplus(tsd,
+	    (batch + 1) * usize, &surplus);
+	assert(prof_sample_event);
+	assert(surplus < usize);
+}
+
+size_t
+batch_alloc(void **ptrs, size_t num, size_t size, int flags) {
+	LOG("core.batch_alloc.entry",
+	    "ptrs: %p, num: %zu, size: %zu, flags: %d", ptrs, num, size, flags);
+
+	tsd_t *tsd = tsd_fetch();
+	check_entry_exit_locking(tsd_tsdn(tsd));
+
+	size_t filled = 0;
+
+	if (unlikely(tsd == NULL || tsd_reentrancy_level_get(tsd) > 0)) {
+		goto label_done;
+	}
+
+	size_t alignment = MALLOCX_ALIGN_GET(flags);
+	size_t usize;
+	if (aligned_usize_get(size, alignment, &usize, NULL, false)) {
+		goto label_done;
+	}
+	szind_t ind = sz_size2index(usize);
+	bool zero = zero_get(MALLOCX_ZERO_GET(flags), /* slow */ true);
+
+	/*
+	 * The cache bin and arena will be lazily initialized; it's hard to
+	 * know in advance whether each of them needs to be initialized.
+	 */
+	cache_bin_t *bin = NULL;
+	arena_t *arena = NULL;
+
+	size_t nregs = 0;
+	if (likely(ind < SC_NBINS)) {
+		nregs = bin_infos[ind].nregs;
+		assert(nregs > 0);
+	}
+
+	while (filled < num) {
+		size_t batch = num - filled;
+		size_t surplus = SIZE_MAX; /* Dead store. */
+		bool prof_sample_event = config_prof && opt_prof
+		    && prof_active_get_unlocked()
+		    && te_prof_sample_event_lookahead_surplus(tsd,
+		    batch * usize, &surplus);
+
+		if (prof_sample_event) {
+			/*
+			 * Adjust so that the batch does not trigger prof
+			 * sampling.
+			 */
+			batch -= surplus / usize + 1;
+			batch_alloc_prof_sample_assert(tsd, batch, usize);
+		}
+
+		size_t progress = 0;
+
+		if (likely(ind < SC_NBINS) && batch >= nregs) {
+			if (arena == NULL) {
+				unsigned arena_ind = mallocx_arena_get(flags);
+				if (arena_get_from_ind(tsd, arena_ind,
+				    &arena)) {
+					goto label_done;
+				}
+				if (arena == NULL) {
+					arena = arena_choose(tsd, NULL);
+				}
+				if (unlikely(arena == NULL)) {
+					goto label_done;
+				}
+			}
+			size_t arena_batch = batch - batch % nregs;
+			size_t n = arena_fill_small_fresh(tsd_tsdn(tsd), arena,
+			    ind, ptrs + filled, arena_batch, zero);
+			progress += n;
+			filled += n;
+		}
+
+		if (likely(ind < nhbins) && progress < batch) {
+			if (bin == NULL) {
+				unsigned tcache_ind = mallocx_tcache_get(flags);
+				tcache_t *tcache = tcache_get_from_ind(tsd,
+				    tcache_ind, /* slow */ true,
+				    /* is_alloc */ true);
+				if (tcache != NULL) {
+					bin = &tcache->bins[ind];
+				}
+			}
+			/*
+			 * If we don't have a tcache bin, we don't want to
+			 * immediately give up, because there's the possibility
+			 * that the user explicitly requested to bypass the
+			 * tcache, or that the user explicitly turned off the
+			 * tcache; in such cases, we go through the slow path,
+			 * i.e. the mallocx() call at the end of the while loop.
+			 */
+			if (bin != NULL) {
+				size_t bin_batch = batch - progress;
+				/*
+				 * n can be less than bin_batch, meaning that
+				 * the cache bin does not have enough memory.
+				 * In such cases, we rely on the slow path,
+				 * i.e. the mallocx() call at the end of the
+				 * while loop, to fill in the cache, and in the
+				 * next iteration of the while loop, the tcache
+				 * will contain a lot of memory, and we can
+				 * harvest them here.  Compared to the
+				 * alternative approach where we directly go to
+				 * the arena bins here, the overhead of our
+				 * current approach should usually be minimal,
+				 * since we never try to fetch more memory than
+				 * what a slab contains via the tcache.  An
+				 * additional benefit is that the tcache will
+				 * not be empty for the next allocation request.
+				 */
+				size_t n = cache_bin_alloc_batch(bin, bin_batch,
+				    ptrs + filled);
+				if (config_stats) {
+					bin->tstats.nrequests += n;
+				}
+				if (zero) {
+					for (size_t i = 0; i < n; ++i) {
+						memset(ptrs[filled + i], 0,
+						    usize);
+					}
+				}
+				if (config_prof && opt_prof
+				    && unlikely(ind >= SC_NBINS)) {
+					for (size_t i = 0; i < n; ++i) {
+						prof_tctx_reset_sampled(tsd,
+						    ptrs[filled + i]);
+					}
+				}
+				progress += n;
+				filled += n;
+			}
+		}
+
+		/*
+		 * For thread events other than prof sampling, trigger them as
+		 * if there's a single allocation of size (n * usize).  This is
+		 * fine because:
+		 * (a) these events do not alter the allocation itself, and
+		 * (b) it's possible that some event would have been triggered
+		 *     multiple times, instead of only once, if the allocations
+		 *     were handled individually, but it would do no harm (or
+		 *     even be beneficial) to coalesce the triggerings.
+		 */
+		thread_alloc_event(tsd, progress * usize);
+
+		if (progress < batch || prof_sample_event) {
+			void *p = je_mallocx(size, flags);
+			if (p == NULL) { /* OOM */
+				break;
+			}
+			if (progress == batch) {
+				assert(prof_sampled(tsd, p));
+			}
+			ptrs[filled++] = p;
+		}
+	}
+
+label_done:
+	check_entry_exit_locking(tsd_tsdn(tsd));
+	LOG("core.batch_alloc.exit", "result: %zu", filled);
+	return filled;
+}
+
+/*
+ * End non-standard functions.
+ */
+/******************************************************************************/
+/*
+ * The following functions are used by threading libraries for protection of
+ * malloc during fork().
+ */
+
+/*
+ * If an application creates a thread before doing any allocation in the main
+ * thread, then calls fork(2) in the main thread followed by memory allocation
+ * in the child process, a race can occur that results in deadlock within the
+ * child: the main thread may have forked while the created thread had
+ * partially initialized the allocator.  Ordinarily jemalloc prevents
+ * fork/malloc races via the following functions it registers during
+ * initialization using pthread_atfork(), but of course that does no good if
+ * the allocator isn't fully initialized at fork time.  The following library
+ * constructor is a partial solution to this problem.  It may still be possible
+ * to trigger the deadlock described above, but doing so would involve forking
+ * via a library constructor that runs before jemalloc's runs.
+ */
+#ifndef JEMALLOC_JET
+JEMALLOC_ATTR(constructor)
+static void
+jemalloc_constructor(void) {
+	malloc_init();
+}
+#endif
+
+#ifndef JEMALLOC_MUTEX_INIT_CB
+void
+jemalloc_prefork(void)
+#else
+JEMALLOC_EXPORT void
+_malloc_prefork(void)
+#endif
+{
+	tsd_t *tsd;
+	unsigned i, j, narenas;
+	arena_t *arena;
+
+#ifdef JEMALLOC_MUTEX_INIT_CB
+	if (!malloc_initialized()) {
+		return;
+	}
+#endif
+	assert(malloc_initialized());
+
+	tsd = tsd_fetch();
+
+	narenas = narenas_total_get();
+
+	witness_prefork(tsd_witness_tsdp_get(tsd));
+	/* Acquire all mutexes in a safe order. */
+	ctl_prefork(tsd_tsdn(tsd));
+	tcache_prefork(tsd_tsdn(tsd));
+	malloc_mutex_prefork(tsd_tsdn(tsd), &arenas_lock);
+	if (have_background_thread) {
+		background_thread_prefork0(tsd_tsdn(tsd));
+	}
+	prof_prefork0(tsd_tsdn(tsd));
+	if (have_background_thread) {
+		background_thread_prefork1(tsd_tsdn(tsd));
+	}
+	/* Break arena prefork into stages to preserve lock order. */
+	for (i = 0; i < 9; i++) {
+		for (j = 0; j < narenas; j++) {
+			if ((arena = arena_get(tsd_tsdn(tsd), j, false)) !=
+			    NULL) {
+				switch (i) {
+				case 0:
+					arena_prefork0(tsd_tsdn(tsd), arena);
+					break;
+				case 1:
+					arena_prefork1(tsd_tsdn(tsd), arena);
+					break;
+				case 2:
+					arena_prefork2(tsd_tsdn(tsd), arena);
+					break;
+				case 3:
+					arena_prefork3(tsd_tsdn(tsd), arena);
+					break;
+				case 4:
+					arena_prefork4(tsd_tsdn(tsd), arena);
+					break;
+				case 5:
+					arena_prefork5(tsd_tsdn(tsd), arena);
+					break;
+				case 6:
+					arena_prefork6(tsd_tsdn(tsd), arena);
+					break;
+				case 7:
+					arena_prefork7(tsd_tsdn(tsd), arena);
+					break;
+				case 8:
+					arena_prefork8(tsd_tsdn(tsd), arena);
+					break;
+				default: not_reached();
+				}
+			}
+		}
+
+	}
+	prof_prefork1(tsd_tsdn(tsd));
+	stats_prefork(tsd_tsdn(tsd));
+	tsd_prefork(tsd);
+}
+
+#ifndef JEMALLOC_MUTEX_INIT_CB
+void
+jemalloc_postfork_parent(void)
+#else
+JEMALLOC_EXPORT void
+_malloc_postfork(void)
+#endif
+{
+	tsd_t *tsd;
+	unsigned i, narenas;
+
+#ifdef JEMALLOC_MUTEX_INIT_CB
+	if (!malloc_initialized()) {
+		return;
+	}
+#endif
+	assert(malloc_initialized());
+
+	tsd = tsd_fetch();
+
+	tsd_postfork_parent(tsd);
+
+	witness_postfork_parent(tsd_witness_tsdp_get(tsd));
+	/* Release all mutexes, now that fork() has completed. */
+	stats_postfork_parent(tsd_tsdn(tsd));
+	for (i = 0, narenas = narenas_total_get(); i < narenas; i++) {
+		arena_t *arena;
+
+		if ((arena = arena_get(tsd_tsdn(tsd), i, false)) != NULL) {
+			arena_postfork_parent(tsd_tsdn(tsd), arena);
+		}
+	}
+	prof_postfork_parent(tsd_tsdn(tsd));
+	if (have_background_thread) {
+		background_thread_postfork_parent(tsd_tsdn(tsd));
+	}
+	malloc_mutex_postfork_parent(tsd_tsdn(tsd), &arenas_lock);
+	tcache_postfork_parent(tsd_tsdn(tsd));
+	ctl_postfork_parent(tsd_tsdn(tsd));
+}
+
+void
+jemalloc_postfork_child(void) {
+	tsd_t *tsd;
+	unsigned i, narenas;
+
+	assert(malloc_initialized());
+
+	tsd = tsd_fetch();
+
+	tsd_postfork_child(tsd);
+
+	witness_postfork_child(tsd_witness_tsdp_get(tsd));
+	/* Release all mutexes, now that fork() has completed. */
+	stats_postfork_child(tsd_tsdn(tsd));
+	for (i = 0, narenas = narenas_total_get(); i < narenas; i++) {
+		arena_t *arena;
+
+		if ((arena = arena_get(tsd_tsdn(tsd), i, false)) != NULL) {
+			arena_postfork_child(tsd_tsdn(tsd), arena);
+		}
+	}
+	prof_postfork_child(tsd_tsdn(tsd));
+	if (have_background_thread) {
+		background_thread_postfork_child(tsd_tsdn(tsd));
+	}
+	malloc_mutex_postfork_child(tsd_tsdn(tsd), &arenas_lock);
+	tcache_postfork_child(tsd_tsdn(tsd));
+	ctl_postfork_child(tsd_tsdn(tsd));
+}
+
+/******************************************************************************/
+
+/* Helps the application decide if a pointer is worth re-allocating in order to reduce fragmentation.
+ * returns 1 if the allocation should be moved, and 0 if the allocation be kept.
+ * If the application decides to re-allocate it should use MALLOCX_TCACHE_NONE when doing so. */
+JEMALLOC_EXPORT int JEMALLOC_NOTHROW
+get_defrag_hint(void* ptr) {
+	assert(ptr != NULL);
+	return iget_defrag_hint(TSDN_NULL, ptr);
+}
diff --git a/deps/jemalloc/src/jemalloc_cpp.cpp b/deps/jemalloc/src/jemalloc_cpp.cpp
new file mode 100644
index 0000000..451655f
--- /dev/null
+++ b/deps/jemalloc/src/jemalloc_cpp.cpp
@@ -0,0 +1,254 @@
+#include <mutex>
+#include <new>
+
+#define JEMALLOC_CPP_CPP_
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include "jemalloc/internal/jemalloc_preamble.h"
+#include "jemalloc/internal/jemalloc_internal_includes.h"
+
+#ifdef __cplusplus
+}
+#endif
+
+// All operators in this file are exported.
+
+// Possibly alias hidden versions of malloc and sdallocx to avoid an extra plt
+// thunk?
+//
+// extern __typeof (sdallocx) sdallocx_int
+//  __attribute ((alias ("sdallocx"),
+//		visibility ("hidden")));
+//
+// ... but it needs to work with jemalloc namespaces.
+
+void	*operator new(std::size_t size);
+void	*operator new[](std::size_t size);
+void	*operator new(std::size_t size, const std::nothrow_t &) noexcept;
+void	*operator new[](std::size_t size, const std::nothrow_t &) noexcept;
+void	operator delete(void *ptr) noexcept;
+void	operator delete[](void *ptr) noexcept;
+void	operator delete(void *ptr, const std::nothrow_t &) noexcept;
+void	operator delete[](void *ptr, const std::nothrow_t &) noexcept;
+
+#if __cpp_sized_deallocation >= 201309
+/* C++14's sized-delete operators. */
+void	operator delete(void *ptr, std::size_t size) noexcept;
+void	operator delete[](void *ptr, std::size_t size) noexcept;
+#endif
+
+#if __cpp_aligned_new >= 201606
+/* C++17's over-aligned operators. */
+void	*operator new(std::size_t size, std::align_val_t);
+void	*operator new(std::size_t size, std::align_val_t, const std::nothrow_t &) noexcept;
+void	*operator new[](std::size_t size, std::align_val_t);
+void	*operator new[](std::size_t size, std::align_val_t, const std::nothrow_t &) noexcept;
+void	operator delete(void* ptr, std::align_val_t) noexcept;
+void	operator delete(void* ptr, std::align_val_t, const std::nothrow_t &) noexcept;
+void	operator delete(void* ptr, std::size_t size, std::align_val_t al) noexcept;
+void	operator delete[](void* ptr, std::align_val_t) noexcept;
+void	operator delete[](void* ptr, std::align_val_t, const std::nothrow_t &) noexcept;
+void	operator delete[](void* ptr, std::size_t size, std::align_val_t al) noexcept;
+#endif
+
+JEMALLOC_NOINLINE
+static void *
+handleOOM(std::size_t size, bool nothrow) {
+	if (opt_experimental_infallible_new) {
+		safety_check_fail("<jemalloc>: Allocation failed and "
+		    "opt.experimental_infallible_new is true. Aborting.\n");
+		return nullptr;
+	}
+
+	void *ptr = nullptr;
+
+	while (ptr == nullptr) {
+		std::new_handler handler;
+		// GCC-4.8 and clang 4.0 do not have std::get_new_handler.
+		{
+			static std::mutex mtx;
+			std::lock_guard<std::mutex> lock(mtx);
+
+			handler = std::set_new_handler(nullptr);
+			std::set_new_handler(handler);
+		}
+		if (handler == nullptr)
+			break;
+
+		try {
+			handler();
+		} catch (const std::bad_alloc &) {
+			break;
+		}
+
+		ptr = je_malloc(size);
+	}
+
+	if (ptr == nullptr && !nothrow)
+		std::__throw_bad_alloc();
+	return ptr;
+}
+
+template <bool IsNoExcept>
+JEMALLOC_NOINLINE
+static void *
+fallback_impl(std::size_t size) noexcept(IsNoExcept) {
+	void *ptr = malloc_default(size);
+	if (likely(ptr != nullptr)) {
+		return ptr;
+	}
+	return handleOOM(size, IsNoExcept);
+}
+
+template <bool IsNoExcept>
+JEMALLOC_ALWAYS_INLINE
+void *
+newImpl(std::size_t size) noexcept(IsNoExcept) {
+	return imalloc_fastpath(size, &fallback_impl<IsNoExcept>);
+}
+
+void *
+operator new(std::size_t size) {
+	return newImpl<false>(size);
+}
+
+void *
+operator new[](std::size_t size) {
+	return newImpl<false>(size);
+}
+
+void *
+operator new(std::size_t size, const std::nothrow_t &) noexcept {
+	return newImpl<true>(size);
+}
+
+void *
+operator new[](std::size_t size, const std::nothrow_t &) noexcept {
+	return newImpl<true>(size);
+}
+
+#if __cpp_aligned_new >= 201606
+
+template <bool IsNoExcept>
+JEMALLOC_ALWAYS_INLINE
+void *
+alignedNewImpl(std::size_t size, std::align_val_t alignment) noexcept(IsNoExcept) {
+	void *ptr = je_aligned_alloc(static_cast<std::size_t>(alignment), size);
+	if (likely(ptr != nullptr)) {
+		return ptr;
+	}
+
+	return handleOOM(size, IsNoExcept);
+}
+
+void *
+operator new(std::size_t size, std::align_val_t alignment) {
+	return alignedNewImpl<false>(size, alignment);
+}
+
+void *
+operator new[](std::size_t size, std::align_val_t alignment) {
+	return alignedNewImpl<false>(size, alignment);
+}
+
+void *
+operator new(std::size_t size, std::align_val_t alignment, const std::nothrow_t &) noexcept {
+	return alignedNewImpl<true>(size, alignment);
+}
+
+void *
+operator new[](std::size_t size, std::align_val_t alignment, const std::nothrow_t &) noexcept {
+	return alignedNewImpl<true>(size, alignment);
+}
+
+#endif  // __cpp_aligned_new
+
+void
+operator delete(void *ptr) noexcept {
+	je_free(ptr);
+}
+
+void
+operator delete[](void *ptr) noexcept {
+	je_free(ptr);
+}
+
+void
+operator delete(void *ptr, const std::nothrow_t &) noexcept {
+	je_free(ptr);
+}
+
+void operator delete[](void *ptr, const std::nothrow_t &) noexcept {
+	je_free(ptr);
+}
+
+#if __cpp_sized_deallocation >= 201309
+
+JEMALLOC_ALWAYS_INLINE
+void
+sizedDeleteImpl(void* ptr, std::size_t size) noexcept {
+	if (unlikely(ptr == nullptr)) {
+		return;
+	}
+	je_sdallocx_noflags(ptr, size);
+}
+
+void
+operator delete(void *ptr, std::size_t size) noexcept {
+	sizedDeleteImpl(ptr, size);
+}
+
+void
+operator delete[](void *ptr, std::size_t size) noexcept {
+	sizedDeleteImpl(ptr, size);
+}
+
+#endif  // __cpp_sized_deallocation
+
+#if __cpp_aligned_new >= 201606
+
+JEMALLOC_ALWAYS_INLINE
+void
+alignedSizedDeleteImpl(void* ptr, std::size_t size, std::align_val_t alignment) noexcept {
+	if (config_debug) {
+		assert(((size_t)alignment & ((size_t)alignment - 1)) == 0);
+	}
+	if (unlikely(ptr == nullptr)) {
+		return;
+	}
+	je_sdallocx(ptr, size, MALLOCX_ALIGN(alignment));
+}
+
+void
+operator delete(void* ptr, std::align_val_t) noexcept {
+	je_free(ptr);
+}
+
+void
+operator delete[](void* ptr, std::align_val_t) noexcept {
+	je_free(ptr);
+}
+
+void
+operator delete(void* ptr, std::align_val_t, const std::nothrow_t&) noexcept {
+	je_free(ptr);
+}
+
+void
+operator delete[](void* ptr, std::align_val_t, const std::nothrow_t&) noexcept {
+	je_free(ptr);
+}
+
+void
+operator delete(void* ptr, std::size_t size, std::align_val_t alignment) noexcept {
+	alignedSizedDeleteImpl(ptr, size, alignment);
+}
+
+void
+operator delete[](void* ptr, std::size_t size, std::align_val_t alignment) noexcept {
+	alignedSizedDeleteImpl(ptr, size, alignment);
+}
+
+#endif  // __cpp_aligned_new
diff --git a/deps/jemalloc/src/large.c b/deps/jemalloc/src/large.c
new file mode 100644
index 0000000..5fc4bf5
--- /dev/null
+++ b/deps/jemalloc/src/large.c
@@ -0,0 +1,322 @@
+#include "jemalloc/internal/jemalloc_preamble.h"
+#include "jemalloc/internal/jemalloc_internal_includes.h"
+
+#include "jemalloc/internal/assert.h"
+#include "jemalloc/internal/emap.h"
+#include "jemalloc/internal/extent_mmap.h"
+#include "jemalloc/internal/mutex.h"
+#include "jemalloc/internal/prof_recent.h"
+#include "jemalloc/internal/util.h"
+
+/******************************************************************************/
+
+void *
+large_malloc(tsdn_t *tsdn, arena_t *arena, size_t usize, bool zero) {
+	assert(usize == sz_s2u(usize));
+
+	return large_palloc(tsdn, arena, usize, CACHELINE, zero);
+}
+
+void *
+large_palloc(tsdn_t *tsdn, arena_t *arena, size_t usize, size_t alignment,
+    bool zero) {
+	size_t ausize;
+	edata_t *edata;
+	UNUSED bool idump JEMALLOC_CC_SILENCE_INIT(false);
+
+	assert(!tsdn_null(tsdn) || arena != NULL);
+
+	ausize = sz_sa2u(usize, alignment);
+	if (unlikely(ausize == 0 || ausize > SC_LARGE_MAXCLASS)) {
+		return NULL;
+	}
+
+	if (likely(!tsdn_null(tsdn))) {
+		arena = arena_choose_maybe_huge(tsdn_tsd(tsdn), arena, usize);
+	}
+	if (unlikely(arena == NULL) || (edata = arena_extent_alloc_large(tsdn,
+	    arena, usize, alignment, zero)) == NULL) {
+		return NULL;
+	}
+
+	/* See comments in arena_bin_slabs_full_insert(). */
+	if (!arena_is_auto(arena)) {
+		/* Insert edata into large. */
+		malloc_mutex_lock(tsdn, &arena->large_mtx);
+		edata_list_active_append(&arena->large, edata);
+		malloc_mutex_unlock(tsdn, &arena->large_mtx);
+	}
+
+	arena_decay_tick(tsdn, arena);
+	return edata_addr_get(edata);
+}
+
+static bool
+large_ralloc_no_move_shrink(tsdn_t *tsdn, edata_t *edata, size_t usize) {
+	arena_t *arena = arena_get_from_edata(edata);
+	ehooks_t *ehooks = arena_get_ehooks(arena);
+	size_t old_size = edata_size_get(edata);
+	size_t old_usize = edata_usize_get(edata);
+
+	assert(old_usize > usize);
+
+	if (ehooks_split_will_fail(ehooks)) {
+		return true;
+	}
+
+	bool deferred_work_generated = false;
+	bool err = pa_shrink(tsdn, &arena->pa_shard, edata, old_size,
+	    usize + sz_large_pad, sz_size2index(usize),
+	    &deferred_work_generated);
+	if (err) {
+		return true;
+	}
+	if (deferred_work_generated) {
+		arena_handle_deferred_work(tsdn, arena);
+	}
+	arena_extent_ralloc_large_shrink(tsdn, arena, edata, old_usize);
+
+	return false;
+}
+
+static bool
+large_ralloc_no_move_expand(tsdn_t *tsdn, edata_t *edata, size_t usize,
+    bool zero) {
+	arena_t *arena = arena_get_from_edata(edata);
+
+	size_t old_size = edata_size_get(edata);
+	size_t old_usize = edata_usize_get(edata);
+	size_t new_size = usize + sz_large_pad;
+
+	szind_t szind = sz_size2index(usize);
+
+	bool deferred_work_generated = false;
+	bool err = pa_expand(tsdn, &arena->pa_shard, edata, old_size, new_size,
+	    szind, zero, &deferred_work_generated);
+
+	if (deferred_work_generated) {
+		arena_handle_deferred_work(tsdn, arena);
+	}
+
+	if (err) {
+		return true;
+	}
+
+	if (zero) {
+		if (opt_cache_oblivious) {
+			assert(sz_large_pad == PAGE);
+			/*
+			 * Zero the trailing bytes of the original allocation's
+			 * last page, since they are in an indeterminate state.
+			 * There will always be trailing bytes, because ptr's
+			 * offset from the beginning of the extent is a multiple
+			 * of CACHELINE in [0 .. PAGE).
+			 */
+			void *zbase = (void *)
+			    ((uintptr_t)edata_addr_get(edata) + old_usize);
+			void *zpast = PAGE_ADDR2BASE((void *)((uintptr_t)zbase +
+			    PAGE));
+			size_t nzero = (uintptr_t)zpast - (uintptr_t)zbase;
+			assert(nzero > 0);
+			memset(zbase, 0, nzero);
+		}
+	}
+	arena_extent_ralloc_large_expand(tsdn, arena, edata, old_usize);
+
+	return false;
+}
+
+bool
+large_ralloc_no_move(tsdn_t *tsdn, edata_t *edata, size_t usize_min,
+    size_t usize_max, bool zero) {
+	size_t oldusize = edata_usize_get(edata);
+
+	/* The following should have been caught by callers. */
+	assert(usize_min > 0 && usize_max <= SC_LARGE_MAXCLASS);
+	/* Both allocation sizes must be large to avoid a move. */
+	assert(oldusize >= SC_LARGE_MINCLASS
+	    && usize_max >= SC_LARGE_MINCLASS);
+
+	if (usize_max > oldusize) {
+		/* Attempt to expand the allocation in-place. */
+		if (!large_ralloc_no_move_expand(tsdn, edata, usize_max,
+		    zero)) {
+			arena_decay_tick(tsdn, arena_get_from_edata(edata));
+			return false;
+		}
+		/* Try again, this time with usize_min. */
+		if (usize_min < usize_max && usize_min > oldusize &&
+		    large_ralloc_no_move_expand(tsdn, edata, usize_min, zero)) {
+			arena_decay_tick(tsdn, arena_get_from_edata(edata));
+			return false;
+		}
+	}
+
+	/*
+	 * Avoid moving the allocation if the existing extent size accommodates
+	 * the new size.
+	 */
+	if (oldusize >= usize_min && oldusize <= usize_max) {
+		arena_decay_tick(tsdn, arena_get_from_edata(edata));
+		return false;
+	}
+
+	/* Attempt to shrink the allocation in-place. */
+	if (oldusize > usize_max) {
+		if (!large_ralloc_no_move_shrink(tsdn, edata, usize_max)) {
+			arena_decay_tick(tsdn, arena_get_from_edata(edata));
+			return false;
+		}
+	}
+	return true;
+}
+
+static void *
+large_ralloc_move_helper(tsdn_t *tsdn, arena_t *arena, size_t usize,
+    size_t alignment, bool zero) {
+	if (alignment <= CACHELINE) {
+		return large_malloc(tsdn, arena, usize, zero);
+	}
+	return large_palloc(tsdn, arena, usize, alignment, zero);
+}
+
+void *
+large_ralloc(tsdn_t *tsdn, arena_t *arena, void *ptr, size_t usize,
+    size_t alignment, bool zero, tcache_t *tcache,
+    hook_ralloc_args_t *hook_args) {
+	edata_t *edata = emap_edata_lookup(tsdn, &arena_emap_global, ptr);
+
+	size_t oldusize = edata_usize_get(edata);
+	/* The following should have been caught by callers. */
+	assert(usize > 0 && usize <= SC_LARGE_MAXCLASS);
+	/* Both allocation sizes must be large to avoid a move. */
+	assert(oldusize >= SC_LARGE_MINCLASS
+	    && usize >= SC_LARGE_MINCLASS);
+
+	/* Try to avoid moving the allocation. */
+	if (!large_ralloc_no_move(tsdn, edata, usize, usize, zero)) {
+		hook_invoke_expand(hook_args->is_realloc
+		    ? hook_expand_realloc : hook_expand_rallocx, ptr, oldusize,
+		    usize, (uintptr_t)ptr, hook_args->args);
+		return edata_addr_get(edata);
+	}
+
+	/*
+	 * usize and old size are different enough that we need to use a
+	 * different size class.  In that case, fall back to allocating new
+	 * space and copying.
+	 */
+	void *ret = large_ralloc_move_helper(tsdn, arena, usize, alignment,
+	    zero);
+	if (ret == NULL) {
+		return NULL;
+	}
+
+	hook_invoke_alloc(hook_args->is_realloc
+	    ? hook_alloc_realloc : hook_alloc_rallocx, ret, (uintptr_t)ret,
+	    hook_args->args);
+	hook_invoke_dalloc(hook_args->is_realloc
+	    ? hook_dalloc_realloc : hook_dalloc_rallocx, ptr, hook_args->args);
+
+	size_t copysize = (usize < oldusize) ? usize : oldusize;
+	memcpy(ret, edata_addr_get(edata), copysize);
+	isdalloct(tsdn, edata_addr_get(edata), oldusize, tcache, NULL, true);
+	return ret;
+}
+
+/*
+ * locked indicates whether the arena's large_mtx is currently held.
+ */
+static void
+large_dalloc_prep_impl(tsdn_t *tsdn, arena_t *arena, edata_t *edata,
+    bool locked) {
+	if (!locked) {
+		/* See comments in arena_bin_slabs_full_insert(). */
+		if (!arena_is_auto(arena)) {
+			malloc_mutex_lock(tsdn, &arena->large_mtx);
+			edata_list_active_remove(&arena->large, edata);
+			malloc_mutex_unlock(tsdn, &arena->large_mtx);
+		}
+	} else {
+		/* Only hold the large_mtx if necessary. */
+		if (!arena_is_auto(arena)) {
+			malloc_mutex_assert_owner(tsdn, &arena->large_mtx);
+			edata_list_active_remove(&arena->large, edata);
+		}
+	}
+	arena_extent_dalloc_large_prep(tsdn, arena, edata);
+}
+
+static void
+large_dalloc_finish_impl(tsdn_t *tsdn, arena_t *arena, edata_t *edata) {
+	bool deferred_work_generated = false;
+	pa_dalloc(tsdn, &arena->pa_shard, edata, &deferred_work_generated);
+	if (deferred_work_generated) {
+		arena_handle_deferred_work(tsdn, arena);
+	}
+}
+
+void
+large_dalloc_prep_locked(tsdn_t *tsdn, edata_t *edata) {
+	large_dalloc_prep_impl(tsdn, arena_get_from_edata(edata), edata, true);
+}
+
+void
+large_dalloc_finish(tsdn_t *tsdn, edata_t *edata) {
+	large_dalloc_finish_impl(tsdn, arena_get_from_edata(edata), edata);
+}
+
+void
+large_dalloc(tsdn_t *tsdn, edata_t *edata) {
+	arena_t *arena = arena_get_from_edata(edata);
+	large_dalloc_prep_impl(tsdn, arena, edata, false);
+	large_dalloc_finish_impl(tsdn, arena, edata);
+	arena_decay_tick(tsdn, arena);
+}
+
+size_t
+large_salloc(tsdn_t *tsdn, const edata_t *edata) {
+	return edata_usize_get(edata);
+}
+
+void
+large_prof_info_get(tsd_t *tsd, edata_t *edata, prof_info_t *prof_info,
+    bool reset_recent) {
+	assert(prof_info != NULL);
+
+	prof_tctx_t *alloc_tctx = edata_prof_tctx_get(edata);
+	prof_info->alloc_tctx = alloc_tctx;
+
+	if ((uintptr_t)alloc_tctx > (uintptr_t)1U) {
+		nstime_copy(&prof_info->alloc_time,
+		    edata_prof_alloc_time_get(edata));
+		prof_info->alloc_size = edata_prof_alloc_size_get(edata);
+		if (reset_recent) {
+			/*
+			 * Reset the pointer on the recent allocation record,
+			 * so that this allocation is recorded as released.
+			 */
+			prof_recent_alloc_reset(tsd, edata);
+		}
+	}
+}
+
+static void
+large_prof_tctx_set(edata_t *edata, prof_tctx_t *tctx) {
+	edata_prof_tctx_set(edata, tctx);
+}
+
+void
+large_prof_tctx_reset(edata_t *edata) {
+	large_prof_tctx_set(edata, (prof_tctx_t *)(uintptr_t)1U);
+}
+
+void
+large_prof_info_set(edata_t *edata, prof_tctx_t *tctx, size_t size) {
+	nstime_t t;
+	nstime_prof_init_update(&t);
+	edata_prof_alloc_time_set(edata, &t);
+	edata_prof_alloc_size_set(edata, size);
+	edata_prof_recent_alloc_init(edata);
+	large_prof_tctx_set(edata, tctx);
+}
diff --git a/deps/jemalloc/src/log.c b/deps/jemalloc/src/log.c
new file mode 100644
index 0000000..778902f
--- /dev/null
+++ b/deps/jemalloc/src/log.c
@@ -0,0 +1,78 @@
+#include "jemalloc/internal/jemalloc_preamble.h"
+#include "jemalloc/internal/jemalloc_internal_includes.h"
+
+#include "jemalloc/internal/log.h"
+
+char log_var_names[JEMALLOC_LOG_VAR_BUFSIZE];
+atomic_b_t log_init_done = ATOMIC_INIT(false);
+
+/*
+ * Returns true if we were able to pick out a segment.  Fills in r_segment_end
+ * with a pointer to the first character after the end of the string.
+ */
+static const char *
+log_var_extract_segment(const char* segment_begin) {
+	const char *end;
+	for (end = segment_begin; *end != '\0' && *end != '|'; end++) {
+	}
+	return end;
+}
+
+static bool
+log_var_matches_segment(const char *segment_begin, const char *segment_end,
+    const char *log_var_begin, const char *log_var_end) {
+	assert(segment_begin <= segment_end);
+	assert(log_var_begin < log_var_end);
+
+	ptrdiff_t segment_len = segment_end - segment_begin;
+	ptrdiff_t log_var_len = log_var_end - log_var_begin;
+	/* The special '.' segment matches everything. */
+	if (segment_len == 1 && *segment_begin == '.') {
+		return true;
+	}
+        if (segment_len == log_var_len) {
+		return strncmp(segment_begin, log_var_begin, segment_len) == 0;
+	} else if (segment_len < log_var_len) {
+		return strncmp(segment_begin, log_var_begin, segment_len) == 0
+		    && log_var_begin[segment_len] == '.';
+        } else {
+		return false;
+	}
+}
+
+unsigned
+log_var_update_state(log_var_t *log_var) {
+	const char *log_var_begin = log_var->name;
+	const char *log_var_end = log_var->name + strlen(log_var->name);
+
+	/* Pointer to one before the beginning of the current segment. */
+	const char *segment_begin = log_var_names;
+
+	/*
+	 * If log_init done is false, we haven't parsed the malloc conf yet.  To
+	 * avoid log-spew, we default to not displaying anything.
+	 */
+	if (!atomic_load_b(&log_init_done, ATOMIC_ACQUIRE)) {
+		return LOG_INITIALIZED_NOT_ENABLED;
+	}
+
+	while (true) {
+		const char *segment_end = log_var_extract_segment(
+		    segment_begin);
+		assert(segment_end < log_var_names + JEMALLOC_LOG_VAR_BUFSIZE);
+		if (log_var_matches_segment(segment_begin, segment_end,
+		    log_var_begin, log_var_end)) {
+			atomic_store_u(&log_var->state, LOG_ENABLED,
+			    ATOMIC_RELAXED);
+			return LOG_ENABLED;
+		}
+		if (*segment_end == '\0') {
+			/* Hit the end of the segment string with no match. */
+			atomic_store_u(&log_var->state,
+			    LOG_INITIALIZED_NOT_ENABLED, ATOMIC_RELAXED);
+			return LOG_INITIALIZED_NOT_ENABLED;
+		}
+		/* Otherwise, skip the delimiter and continue. */
+		segment_begin = segment_end + 1;
+	}
+}
diff --git a/deps/jemalloc/src/malloc_io.c b/deps/jemalloc/src/malloc_io.c
new file mode 100644
index 0000000..b76885c
--- /dev/null
+++ b/deps/jemalloc/src/malloc_io.c
@@ -0,0 +1,697 @@
+#include "jemalloc/internal/jemalloc_preamble.h"
+#include "jemalloc/internal/jemalloc_internal_includes.h"
+
+#include "jemalloc/internal/malloc_io.h"
+#include "jemalloc/internal/util.h"
+
+#ifdef assert
+#  undef assert
+#endif
+#ifdef not_reached
+#  undef not_reached
+#endif
+#ifdef not_implemented
+#  undef not_implemented
+#endif
+#ifdef assert_not_implemented
+#  undef assert_not_implemented
+#endif
+
+/*
+ * Define simple versions of assertion macros that won't recurse in case
+ * of assertion failures in malloc_*printf().
+ */
+#define assert(e) do {							\
+	if (config_debug && !(e)) {					\
+		malloc_write("<jemalloc>: Failed assertion\n");		\
+		abort();						\
+	}								\
+} while (0)
+
+#define not_reached() do {						\
+	if (config_debug) {						\
+		malloc_write("<jemalloc>: Unreachable code reached\n");	\
+		abort();						\
+	}								\
+	unreachable();							\
+} while (0)
+
+#define not_implemented() do {						\
+	if (config_debug) {						\
+		malloc_write("<jemalloc>: Not implemented\n");		\
+		abort();						\
+	}								\
+} while (0)
+
+#define assert_not_implemented(e) do {					\
+	if (unlikely(config_debug && !(e))) {				\
+		not_implemented();					\
+	}								\
+} while (0)
+
+/******************************************************************************/
+/* Function prototypes for non-inline static functions. */
+
+#define U2S_BUFSIZE ((1U << (LG_SIZEOF_INTMAX_T + 3)) + 1)
+static char *u2s(uintmax_t x, unsigned base, bool uppercase, char *s,
+    size_t *slen_p);
+#define D2S_BUFSIZE (1 + U2S_BUFSIZE)
+static char *d2s(intmax_t x, char sign, char *s, size_t *slen_p);
+#define O2S_BUFSIZE (1 + U2S_BUFSIZE)
+static char *o2s(uintmax_t x, bool alt_form, char *s, size_t *slen_p);
+#define X2S_BUFSIZE (2 + U2S_BUFSIZE)
+static char *x2s(uintmax_t x, bool alt_form, bool uppercase, char *s,
+    size_t *slen_p);
+
+/******************************************************************************/
+
+/* malloc_message() setup. */
+void
+wrtmessage(void *cbopaque, const char *s) {
+	malloc_write_fd(STDERR_FILENO, s, strlen(s));
+}
+
+JEMALLOC_EXPORT void	(*je_malloc_message)(void *, const char *s);
+
+/*
+ * Wrapper around malloc_message() that avoids the need for
+ * je_malloc_message(...) throughout the code.
+ */
+void
+malloc_write(const char *s) {
+	if (je_malloc_message != NULL) {
+		je_malloc_message(NULL, s);
+	} else {
+		wrtmessage(NULL, s);
+	}
+}
+
+/*
+ * glibc provides a non-standard strerror_r() when _GNU_SOURCE is defined, so
+ * provide a wrapper.
+ */
+int
+buferror(int err, char *buf, size_t buflen) {
+#ifdef _WIN32
+	FormatMessageA(FORMAT_MESSAGE_FROM_SYSTEM, NULL, err, 0,
+	    (LPSTR)buf, (DWORD)buflen, NULL);
+	return 0;
+#elif defined(JEMALLOC_STRERROR_R_RETURNS_CHAR_WITH_GNU_SOURCE) && defined(_GNU_SOURCE)
+	char *b = strerror_r(err, buf, buflen);
+	if (b != buf) {
+		strncpy(buf, b, buflen);
+		buf[buflen-1] = '\0';
+	}
+	return 0;
+#else
+	return strerror_r(err, buf, buflen);
+#endif
+}
+
+uintmax_t
+malloc_strtoumax(const char *restrict nptr, char **restrict endptr, int base) {
+	uintmax_t ret, digit;
+	unsigned b;
+	bool neg;
+	const char *p, *ns;
+
+	p = nptr;
+	if (base < 0 || base == 1 || base > 36) {
+		ns = p;
+		set_errno(EINVAL);
+		ret = UINTMAX_MAX;
+		goto label_return;
+	}
+	b = base;
+
+	/* Swallow leading whitespace and get sign, if any. */
+	neg = false;
+	while (true) {
+		switch (*p) {
+		case '\t': case '\n': case '\v': case '\f': case '\r': case ' ':
+			p++;
+			break;
+		case '-':
+			neg = true;
+			JEMALLOC_FALLTHROUGH;
+		case '+':
+			p++;
+			JEMALLOC_FALLTHROUGH;
+		default:
+			goto label_prefix;
+		}
+	}
+
+	/* Get prefix, if any. */
+	label_prefix:
+	/*
+	 * Note where the first non-whitespace/sign character is so that it is
+	 * possible to tell whether any digits are consumed (e.g., "  0" vs.
+	 * "  -x").
+	 */
+	ns = p;
+	if (*p == '0') {
+		switch (p[1]) {
+		case '0': case '1': case '2': case '3': case '4': case '5':
+		case '6': case '7':
+			if (b == 0) {
+				b = 8;
+			}
+			if (b == 8) {
+				p++;
+			}
+			break;
+		case 'X': case 'x':
+			switch (p[2]) {
+			case '0': case '1': case '2': case '3': case '4':
+			case '5': case '6': case '7': case '8': case '9':
+			case 'A': case 'B': case 'C': case 'D': case 'E':
+			case 'F':
+			case 'a': case 'b': case 'c': case 'd': case 'e':
+			case 'f':
+				if (b == 0) {
+					b = 16;
+				}
+				if (b == 16) {
+					p += 2;
+				}
+				break;
+			default:
+				break;
+			}
+			break;
+		default:
+			p++;
+			ret = 0;
+			goto label_return;
+		}
+	}
+	if (b == 0) {
+		b = 10;
+	}
+
+	/* Convert. */
+	ret = 0;
+	while ((*p >= '0' && *p <= '9' && (digit = *p - '0') < b)
+	    || (*p >= 'A' && *p <= 'Z' && (digit = 10 + *p - 'A') < b)
+	    || (*p >= 'a' && *p <= 'z' && (digit = 10 + *p - 'a') < b)) {
+		uintmax_t pret = ret;
+		ret *= b;
+		ret += digit;
+		if (ret < pret) {
+			/* Overflow. */
+			set_errno(ERANGE);
+			ret = UINTMAX_MAX;
+			goto label_return;
+		}
+		p++;
+	}
+	if (neg) {
+		ret = (uintmax_t)(-((intmax_t)ret));
+	}
+
+	if (p == ns) {
+		/* No conversion performed. */
+		set_errno(EINVAL);
+		ret = UINTMAX_MAX;
+		goto label_return;
+	}
+
+label_return:
+	if (endptr != NULL) {
+		if (p == ns) {
+			/* No characters were converted. */
+			*endptr = (char *)nptr;
+		} else {
+			*endptr = (char *)p;
+		}
+	}
+	return ret;
+}
+
+static char *
+u2s(uintmax_t x, unsigned base, bool uppercase, char *s, size_t *slen_p) {
+	unsigned i;
+
+	i = U2S_BUFSIZE - 1;
+	s[i] = '\0';
+	switch (base) {
+	case 10:
+		do {
+			i--;
+			s[i] = "0123456789"[x % (uint64_t)10];
+			x /= (uint64_t)10;
+		} while (x > 0);
+		break;
+	case 16: {
+		const char *digits = (uppercase)
+		    ? "0123456789ABCDEF"
+		    : "0123456789abcdef";
+
+		do {
+			i--;
+			s[i] = digits[x & 0xf];
+			x >>= 4;
+		} while (x > 0);
+		break;
+	} default: {
+		const char *digits = (uppercase)
+		    ? "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ"
+		    : "0123456789abcdefghijklmnopqrstuvwxyz";
+
+		assert(base >= 2 && base <= 36);
+		do {
+			i--;
+			s[i] = digits[x % (uint64_t)base];
+			x /= (uint64_t)base;
+		} while (x > 0);
+	}}
+
+	*slen_p = U2S_BUFSIZE - 1 - i;
+	return &s[i];
+}
+
+static char *
+d2s(intmax_t x, char sign, char *s, size_t *slen_p) {
+	bool neg;
+
+	if ((neg = (x < 0))) {
+		x = -x;
+	}
+	s = u2s(x, 10, false, s, slen_p);
+	if (neg) {
+		sign = '-';
+	}
+	switch (sign) {
+	case '-':
+		if (!neg) {
+			break;
+		}
+		JEMALLOC_FALLTHROUGH;
+	case ' ':
+	case '+':
+		s--;
+		(*slen_p)++;
+		*s = sign;
+		break;
+	default: not_reached();
+	}
+	return s;
+}
+
+static char *
+o2s(uintmax_t x, bool alt_form, char *s, size_t *slen_p) {
+	s = u2s(x, 8, false, s, slen_p);
+	if (alt_form && *s != '0') {
+		s--;
+		(*slen_p)++;
+		*s = '0';
+	}
+	return s;
+}
+
+static char *
+x2s(uintmax_t x, bool alt_form, bool uppercase, char *s, size_t *slen_p) {
+	s = u2s(x, 16, uppercase, s, slen_p);
+	if (alt_form) {
+		s -= 2;
+		(*slen_p) += 2;
+		memcpy(s, uppercase ? "0X" : "0x", 2);
+	}
+	return s;
+}
+
+JEMALLOC_COLD
+size_t
+malloc_vsnprintf(char *str, size_t size, const char *format, va_list ap) {
+	size_t i;
+	const char *f;
+
+#define APPEND_C(c) do {						\
+	if (i < size) {							\
+		str[i] = (c);						\
+	}								\
+	i++;								\
+} while (0)
+#define APPEND_S(s, slen) do {						\
+	if (i < size) {							\
+		size_t cpylen = (slen <= size - i) ? slen : size - i;	\
+		memcpy(&str[i], s, cpylen);				\
+	}								\
+	i += slen;							\
+} while (0)
+#define APPEND_PADDED_S(s, slen, width, left_justify) do {		\
+	/* Left padding. */						\
+	size_t pad_len = (width == -1) ? 0 : ((slen < (size_t)width) ?	\
+	    (size_t)width - slen : 0);					\
+	if (!left_justify && pad_len != 0) {				\
+		size_t j;						\
+		for (j = 0; j < pad_len; j++) {				\
+			if (pad_zero) {					\
+				APPEND_C('0');				\
+			} else {					\
+				APPEND_C(' ');				\
+			}						\
+		}							\
+	}								\
+	/* Value. */							\
+	APPEND_S(s, slen);						\
+	/* Right padding. */						\
+	if (left_justify && pad_len != 0) {				\
+		size_t j;						\
+		for (j = 0; j < pad_len; j++) {				\
+			APPEND_C(' ');					\
+		}							\
+	}								\
+} while (0)
+#define GET_ARG_NUMERIC(val, len) do {					\
+	switch ((unsigned char)len) {					\
+	case '?':							\
+		val = va_arg(ap, int);					\
+		break;							\
+	case '?' | 0x80:						\
+		val = va_arg(ap, unsigned int);				\
+		break;							\
+	case 'l':							\
+		val = va_arg(ap, long);					\
+		break;							\
+	case 'l' | 0x80:						\
+		val = va_arg(ap, unsigned long);			\
+		break;							\
+	case 'q':							\
+		val = va_arg(ap, long long);				\
+		break;							\
+	case 'q' | 0x80:						\
+		val = va_arg(ap, unsigned long long);			\
+		break;							\
+	case 'j':							\
+		val = va_arg(ap, intmax_t);				\
+		break;							\
+	case 'j' | 0x80:						\
+		val = va_arg(ap, uintmax_t);				\
+		break;							\
+	case 't':							\
+		val = va_arg(ap, ptrdiff_t);				\
+		break;							\
+	case 'z':							\
+		val = va_arg(ap, ssize_t);				\
+		break;							\
+	case 'z' | 0x80:						\
+		val = va_arg(ap, size_t);				\
+		break;							\
+	case 'p': /* Synthetic; used for %p. */				\
+		val = va_arg(ap, uintptr_t);				\
+		break;							\
+	default:							\
+		not_reached();						\
+		val = 0;						\
+	}								\
+} while (0)
+
+	i = 0;
+	f = format;
+	while (true) {
+		switch (*f) {
+		case '\0': goto label_out;
+		case '%': {
+			bool alt_form = false;
+			bool left_justify = false;
+			bool plus_space = false;
+			bool plus_plus = false;
+			int prec = -1;
+			int width = -1;
+			unsigned char len = '?';
+			char *s;
+			size_t slen;
+			bool first_width_digit = true;
+			bool pad_zero = false;
+
+			f++;
+			/* Flags. */
+			while (true) {
+				switch (*f) {
+				case '#':
+					assert(!alt_form);
+					alt_form = true;
+					break;
+				case '-':
+					assert(!left_justify);
+					left_justify = true;
+					break;
+				case ' ':
+					assert(!plus_space);
+					plus_space = true;
+					break;
+				case '+':
+					assert(!plus_plus);
+					plus_plus = true;
+					break;
+				default: goto label_width;
+				}
+				f++;
+			}
+			/* Width. */
+			label_width:
+			switch (*f) {
+			case '*':
+				width = va_arg(ap, int);
+				f++;
+				if (width < 0) {
+					left_justify = true;
+					width = -width;
+				}
+				break;
+			case '0':
+				if (first_width_digit) {
+					pad_zero = true;
+				}
+				JEMALLOC_FALLTHROUGH;
+			case '1': case '2': case '3': case '4':
+			case '5': case '6': case '7': case '8': case '9': {
+				uintmax_t uwidth;
+				set_errno(0);
+				uwidth = malloc_strtoumax(f, (char **)&f, 10);
+				assert(uwidth != UINTMAX_MAX || get_errno() !=
+				    ERANGE);
+				width = (int)uwidth;
+				first_width_digit = false;
+				break;
+			} default:
+				break;
+			}
+			/* Width/precision separator. */
+			if (*f == '.') {
+				f++;
+			} else {
+				goto label_length;
+			}
+			/* Precision. */
+			switch (*f) {
+			case '*':
+				prec = va_arg(ap, int);
+				f++;
+				break;
+			case '0': case '1': case '2': case '3': case '4':
+			case '5': case '6': case '7': case '8': case '9': {
+				uintmax_t uprec;
+				set_errno(0);
+				uprec = malloc_strtoumax(f, (char **)&f, 10);
+				assert(uprec != UINTMAX_MAX || get_errno() !=
+				    ERANGE);
+				prec = (int)uprec;
+				break;
+			}
+			default: break;
+			}
+			/* Length. */
+			label_length:
+			switch (*f) {
+			case 'l':
+				f++;
+				if (*f == 'l') {
+					len = 'q';
+					f++;
+				} else {
+					len = 'l';
+				}
+				break;
+			case 'q': case 'j': case 't': case 'z':
+				len = *f;
+				f++;
+				break;
+			default: break;
+			}
+			/* Conversion specifier. */
+			switch (*f) {
+			case '%':
+				/* %% */
+				APPEND_C(*f);
+				f++;
+				break;
+			case 'd': case 'i': {
+				intmax_t val JEMALLOC_CC_SILENCE_INIT(0);
+				char buf[D2S_BUFSIZE];
+
+				/*
+				 * Outputting negative, zero-padded numbers
+				 * would require a nontrivial rework of the
+				 * interaction between the width and padding
+				 * (since 0 padding goes between the '-' and the
+				 * number, while ' ' padding goes either before
+				 * the - or after the number.  Since we
+				 * currently don't ever need 0-padded negative
+				 * numbers, just don't bother supporting it.
+				 */
+				assert(!pad_zero);
+
+				GET_ARG_NUMERIC(val, len);
+				s = d2s(val, (plus_plus ? '+' : (plus_space ?
+				    ' ' : '-')), buf, &slen);
+				APPEND_PADDED_S(s, slen, width, left_justify);
+				f++;
+				break;
+			} case 'o': {
+				uintmax_t val JEMALLOC_CC_SILENCE_INIT(0);
+				char buf[O2S_BUFSIZE];
+
+				GET_ARG_NUMERIC(val, len | 0x80);
+				s = o2s(val, alt_form, buf, &slen);
+				APPEND_PADDED_S(s, slen, width, left_justify);
+				f++;
+				break;
+			} case 'u': {
+				uintmax_t val JEMALLOC_CC_SILENCE_INIT(0);
+				char buf[U2S_BUFSIZE];
+
+				GET_ARG_NUMERIC(val, len | 0x80);
+				s = u2s(val, 10, false, buf, &slen);
+				APPEND_PADDED_S(s, slen, width, left_justify);
+				f++;
+				break;
+			} case 'x': case 'X': {
+				uintmax_t val JEMALLOC_CC_SILENCE_INIT(0);
+				char buf[X2S_BUFSIZE];
+
+				GET_ARG_NUMERIC(val, len | 0x80);
+				s = x2s(val, alt_form, *f == 'X', buf, &slen);
+				APPEND_PADDED_S(s, slen, width, left_justify);
+				f++;
+				break;
+			} case 'c': {
+				unsigned char val;
+				char buf[2];
+
+				assert(len == '?' || len == 'l');
+				assert_not_implemented(len != 'l');
+				val = va_arg(ap, int);
+				buf[0] = val;
+				buf[1] = '\0';
+				APPEND_PADDED_S(buf, 1, width, left_justify);
+				f++;
+				break;
+			} case 's':
+				assert(len == '?' || len == 'l');
+				assert_not_implemented(len != 'l');
+				s = va_arg(ap, char *);
+				slen = (prec < 0) ? strlen(s) : (size_t)prec;
+				APPEND_PADDED_S(s, slen, width, left_justify);
+				f++;
+				break;
+			case 'p': {
+				uintmax_t val;
+				char buf[X2S_BUFSIZE];
+
+				GET_ARG_NUMERIC(val, 'p');
+				s = x2s(val, true, false, buf, &slen);
+				APPEND_PADDED_S(s, slen, width, left_justify);
+				f++;
+				break;
+			} default: not_reached();
+			}
+			break;
+		} default: {
+			APPEND_C(*f);
+			f++;
+			break;
+		}}
+	}
+	label_out:
+	if (i < size) {
+		str[i] = '\0';
+	} else {
+		str[size - 1] = '\0';
+	}
+
+#undef APPEND_C
+#undef APPEND_S
+#undef APPEND_PADDED_S
+#undef GET_ARG_NUMERIC
+	return i;
+}
+
+JEMALLOC_FORMAT_PRINTF(3, 4)
+size_t
+malloc_snprintf(char *str, size_t size, const char *format, ...) {
+	size_t ret;
+	va_list ap;
+
+	va_start(ap, format);
+	ret = malloc_vsnprintf(str, size, format, ap);
+	va_end(ap);
+
+	return ret;
+}
+
+void
+malloc_vcprintf(write_cb_t *write_cb, void *cbopaque, const char *format,
+    va_list ap) {
+	char buf[MALLOC_PRINTF_BUFSIZE];
+
+	if (write_cb == NULL) {
+		/*
+		 * The caller did not provide an alternate write_cb callback
+		 * function, so use the default one.  malloc_write() is an
+		 * inline function, so use malloc_message() directly here.
+		 */
+		write_cb = (je_malloc_message != NULL) ? je_malloc_message :
+		    wrtmessage;
+	}
+
+	malloc_vsnprintf(buf, sizeof(buf), format, ap);
+	write_cb(cbopaque, buf);
+}
+
+/*
+ * Print to a callback function in such a way as to (hopefully) avoid memory
+ * allocation.
+ */
+JEMALLOC_FORMAT_PRINTF(3, 4)
+void
+malloc_cprintf(write_cb_t *write_cb, void *cbopaque, const char *format, ...) {
+	va_list ap;
+
+	va_start(ap, format);
+	malloc_vcprintf(write_cb, cbopaque, format, ap);
+	va_end(ap);
+}
+
+/* Print to stderr in such a way as to avoid memory allocation. */
+JEMALLOC_FORMAT_PRINTF(1, 2)
+void
+malloc_printf(const char *format, ...) {
+	va_list ap;
+
+	va_start(ap, format);
+	malloc_vcprintf(NULL, NULL, format, ap);
+	va_end(ap);
+}
+
+/*
+ * Restore normal assertion macros, in order to make it possible to compile all
+ * C files as a single concatenation.
+ */
+#undef assert
+#undef not_reached
+#undef not_implemented
+#undef assert_not_implemented
+#include "jemalloc/internal/assert.h"
diff --git a/deps/jemalloc/src/mutex.c b/deps/jemalloc/src/mutex.c
new file mode 100644
index 0000000..0b3547a
--- /dev/null
+++ b/deps/jemalloc/src/mutex.c
@@ -0,0 +1,228 @@
+#include "jemalloc/internal/jemalloc_preamble.h"
+#include "jemalloc/internal/jemalloc_internal_includes.h"
+
+#include "jemalloc/internal/assert.h"
+#include "jemalloc/internal/malloc_io.h"
+#include "jemalloc/internal/spin.h"
+
+#ifndef _CRT_SPINCOUNT
+#define _CRT_SPINCOUNT 4000
+#endif
+
+/*
+ * Based on benchmark results, a fixed spin with this amount of retries works
+ * well for our critical sections.
+ */
+int64_t opt_mutex_max_spin = 600;
+
+/******************************************************************************/
+/* Data. */
+
+#ifdef JEMALLOC_LAZY_LOCK
+bool isthreaded = false;
+#endif
+#ifdef JEMALLOC_MUTEX_INIT_CB
+static bool		postpone_init = true;
+static malloc_mutex_t	*postponed_mutexes = NULL;
+#endif
+
+/******************************************************************************/
+/*
+ * We intercept pthread_create() calls in order to toggle isthreaded if the
+ * process goes multi-threaded.
+ */
+
+#if defined(JEMALLOC_LAZY_LOCK) && !defined(_WIN32)
+JEMALLOC_EXPORT int
+pthread_create(pthread_t *__restrict thread,
+    const pthread_attr_t *__restrict attr, void *(*start_routine)(void *),
+    void *__restrict arg) {
+	return pthread_create_wrapper(thread, attr, start_routine, arg);
+}
+#endif
+
+/******************************************************************************/
+
+#ifdef JEMALLOC_MUTEX_INIT_CB
+JEMALLOC_EXPORT int	_pthread_mutex_init_calloc_cb(pthread_mutex_t *mutex,
+    void *(calloc_cb)(size_t, size_t));
+#endif
+
+void
+malloc_mutex_lock_slow(malloc_mutex_t *mutex) {
+	mutex_prof_data_t *data = &mutex->prof_data;
+	nstime_t before;
+
+	if (ncpus == 1) {
+		goto label_spin_done;
+	}
+
+	int cnt = 0;
+	do {
+		spin_cpu_spinwait();
+		if (!atomic_load_b(&mutex->locked, ATOMIC_RELAXED)
+                    && !malloc_mutex_trylock_final(mutex)) {
+			data->n_spin_acquired++;
+			return;
+		}
+	} while (cnt++ < opt_mutex_max_spin || opt_mutex_max_spin == -1);
+
+	if (!config_stats) {
+		/* Only spin is useful when stats is off. */
+		malloc_mutex_lock_final(mutex);
+		return;
+	}
+label_spin_done:
+	nstime_init_update(&before);
+	/* Copy before to after to avoid clock skews. */
+	nstime_t after;
+	nstime_copy(&after, &before);
+	uint32_t n_thds = atomic_fetch_add_u32(&data->n_waiting_thds, 1,
+	    ATOMIC_RELAXED) + 1;
+	/* One last try as above two calls may take quite some cycles. */
+	if (!malloc_mutex_trylock_final(mutex)) {
+		atomic_fetch_sub_u32(&data->n_waiting_thds, 1, ATOMIC_RELAXED);
+		data->n_spin_acquired++;
+		return;
+	}
+
+	/* True slow path. */
+	malloc_mutex_lock_final(mutex);
+	/* Update more slow-path only counters. */
+	atomic_fetch_sub_u32(&data->n_waiting_thds, 1, ATOMIC_RELAXED);
+	nstime_update(&after);
+
+	nstime_t delta;
+	nstime_copy(&delta, &after);
+	nstime_subtract(&delta, &before);
+
+	data->n_wait_times++;
+	nstime_add(&data->tot_wait_time, &delta);
+	if (nstime_compare(&data->max_wait_time, &delta) < 0) {
+		nstime_copy(&data->max_wait_time, &delta);
+	}
+	if (n_thds > data->max_n_thds) {
+		data->max_n_thds = n_thds;
+	}
+}
+
+static void
+mutex_prof_data_init(mutex_prof_data_t *data) {
+	memset(data, 0, sizeof(mutex_prof_data_t));
+	nstime_init_zero(&data->max_wait_time);
+	nstime_init_zero(&data->tot_wait_time);
+	data->prev_owner = NULL;
+}
+
+void
+malloc_mutex_prof_data_reset(tsdn_t *tsdn, malloc_mutex_t *mutex) {
+	malloc_mutex_assert_owner(tsdn, mutex);
+	mutex_prof_data_init(&mutex->prof_data);
+}
+
+static int
+mutex_addr_comp(const witness_t *witness1, void *mutex1,
+    const witness_t *witness2, void *mutex2) {
+	assert(mutex1 != NULL);
+	assert(mutex2 != NULL);
+	uintptr_t mu1int = (uintptr_t)mutex1;
+	uintptr_t mu2int = (uintptr_t)mutex2;
+	if (mu1int < mu2int) {
+		return -1;
+	} else if (mu1int == mu2int) {
+		return 0;
+	} else {
+		return 1;
+	}
+}
+
+bool
+malloc_mutex_init(malloc_mutex_t *mutex, const char *name,
+    witness_rank_t rank, malloc_mutex_lock_order_t lock_order) {
+	mutex_prof_data_init(&mutex->prof_data);
+#ifdef _WIN32
+#  if _WIN32_WINNT >= 0x0600
+	InitializeSRWLock(&mutex->lock);
+#  else
+	if (!InitializeCriticalSectionAndSpinCount(&mutex->lock,
+	    _CRT_SPINCOUNT)) {
+		return true;
+	}
+#  endif
+#elif (defined(JEMALLOC_OS_UNFAIR_LOCK))
+       mutex->lock = OS_UNFAIR_LOCK_INIT;
+#elif (defined(JEMALLOC_MUTEX_INIT_CB))
+	if (postpone_init) {
+		mutex->postponed_next = postponed_mutexes;
+		postponed_mutexes = mutex;
+	} else {
+		if (_pthread_mutex_init_calloc_cb(&mutex->lock,
+		    bootstrap_calloc) != 0) {
+			return true;
+		}
+	}
+#else
+	pthread_mutexattr_t attr;
+
+	if (pthread_mutexattr_init(&attr) != 0) {
+		return true;
+	}
+	pthread_mutexattr_settype(&attr, MALLOC_MUTEX_TYPE);
+	if (pthread_mutex_init(&mutex->lock, &attr) != 0) {
+		pthread_mutexattr_destroy(&attr);
+		return true;
+	}
+	pthread_mutexattr_destroy(&attr);
+#endif
+	if (config_debug) {
+		mutex->lock_order = lock_order;
+		if (lock_order == malloc_mutex_address_ordered) {
+			witness_init(&mutex->witness, name, rank,
+			    mutex_addr_comp, mutex);
+		} else {
+			witness_init(&mutex->witness, name, rank, NULL, NULL);
+		}
+	}
+	return false;
+}
+
+void
+malloc_mutex_prefork(tsdn_t *tsdn, malloc_mutex_t *mutex) {
+	malloc_mutex_lock(tsdn, mutex);
+}
+
+void
+malloc_mutex_postfork_parent(tsdn_t *tsdn, malloc_mutex_t *mutex) {
+	malloc_mutex_unlock(tsdn, mutex);
+}
+
+void
+malloc_mutex_postfork_child(tsdn_t *tsdn, malloc_mutex_t *mutex) {
+#ifdef JEMALLOC_MUTEX_INIT_CB
+	malloc_mutex_unlock(tsdn, mutex);
+#else
+	if (malloc_mutex_init(mutex, mutex->witness.name,
+	    mutex->witness.rank, mutex->lock_order)) {
+		malloc_printf("<jemalloc>: Error re-initializing mutex in "
+		    "child\n");
+		if (opt_abort) {
+			abort();
+		}
+	}
+#endif
+}
+
+bool
+malloc_mutex_boot(void) {
+#ifdef JEMALLOC_MUTEX_INIT_CB
+	postpone_init = false;
+	while (postponed_mutexes != NULL) {
+		if (_pthread_mutex_init_calloc_cb(&postponed_mutexes->lock,
+		    bootstrap_calloc) != 0) {
+			return true;
+		}
+		postponed_mutexes = postponed_mutexes->postponed_next;
+	}
+#endif
+	return false;
+}
diff --git a/deps/jemalloc/src/nstime.c b/deps/jemalloc/src/nstime.c
new file mode 100644
index 0000000..a1a5377
--- /dev/null
+++ b/deps/jemalloc/src/nstime.c
@@ -0,0 +1,289 @@
+#include "jemalloc/internal/jemalloc_preamble.h"
+#include "jemalloc/internal/jemalloc_internal_includes.h"
+
+#include "jemalloc/internal/nstime.h"
+
+#include "jemalloc/internal/assert.h"
+
+#define BILLION	UINT64_C(1000000000)
+#define MILLION	UINT64_C(1000000)
+
+static void
+nstime_set_initialized(nstime_t *time) {
+#ifdef JEMALLOC_DEBUG
+	time->magic = NSTIME_MAGIC;
+#endif
+}
+
+static void
+nstime_assert_initialized(const nstime_t *time) {
+#ifdef JEMALLOC_DEBUG
+	/*
+	 * Some parts (e.g. stats) rely on memset to zero initialize.  Treat
+	 * these as valid initialization.
+	 */
+	assert(time->magic == NSTIME_MAGIC ||
+	    (time->magic == 0 && time->ns == 0));
+#endif
+}
+
+static void
+nstime_pair_assert_initialized(const nstime_t *t1, const nstime_t *t2) {
+	nstime_assert_initialized(t1);
+	nstime_assert_initialized(t2);
+}
+
+static void
+nstime_initialize_operand(nstime_t *time) {
+	/*
+	 * Operations like nstime_add may have the initial operand being zero
+	 * initialized (covered by the assert below).  Full-initialize needed
+	 * before changing it to non-zero.
+	 */
+	nstime_assert_initialized(time);
+	nstime_set_initialized(time);
+}
+
+void
+nstime_init(nstime_t *time, uint64_t ns) {
+	nstime_set_initialized(time);
+	time->ns = ns;
+}
+
+void
+nstime_init2(nstime_t *time, uint64_t sec, uint64_t nsec) {
+	nstime_set_initialized(time);
+	time->ns = sec * BILLION + nsec;
+}
+
+uint64_t
+nstime_ns(const nstime_t *time) {
+	nstime_assert_initialized(time);
+	return time->ns;
+}
+
+uint64_t
+nstime_msec(const nstime_t *time) {
+	nstime_assert_initialized(time);
+	return time->ns / MILLION;
+}
+
+uint64_t
+nstime_sec(const nstime_t *time) {
+	nstime_assert_initialized(time);
+	return time->ns / BILLION;
+}
+
+uint64_t
+nstime_nsec(const nstime_t *time) {
+	nstime_assert_initialized(time);
+	return time->ns % BILLION;
+}
+
+void
+nstime_copy(nstime_t *time, const nstime_t *source) {
+	/* Source is required to be initialized. */
+	nstime_assert_initialized(source);
+	*time = *source;
+	nstime_assert_initialized(time);
+}
+
+int
+nstime_compare(const nstime_t *a, const nstime_t *b) {
+	nstime_pair_assert_initialized(a, b);
+	return (a->ns > b->ns) - (a->ns < b->ns);
+}
+
+void
+nstime_add(nstime_t *time, const nstime_t *addend) {
+	nstime_pair_assert_initialized(time, addend);
+	assert(UINT64_MAX - time->ns >= addend->ns);
+
+	nstime_initialize_operand(time);
+	time->ns += addend->ns;
+}
+
+void
+nstime_iadd(nstime_t *time, uint64_t addend) {
+	nstime_assert_initialized(time);
+	assert(UINT64_MAX - time->ns >= addend);
+
+	nstime_initialize_operand(time);
+	time->ns += addend;
+}
+
+void
+nstime_subtract(nstime_t *time, const nstime_t *subtrahend) {
+	nstime_pair_assert_initialized(time, subtrahend);
+	assert(nstime_compare(time, subtrahend) >= 0);
+
+	/* No initialize operand -- subtraction must be initialized. */
+	time->ns -= subtrahend->ns;
+}
+
+void
+nstime_isubtract(nstime_t *time, uint64_t subtrahend) {
+	nstime_assert_initialized(time);
+	assert(time->ns >= subtrahend);
+
+	/* No initialize operand -- subtraction must be initialized. */
+	time->ns -= subtrahend;
+}
+
+void
+nstime_imultiply(nstime_t *time, uint64_t multiplier) {
+	nstime_assert_initialized(time);
+	assert((((time->ns | multiplier) & (UINT64_MAX << (sizeof(uint64_t) <<
+	    2))) == 0) || ((time->ns * multiplier) / multiplier == time->ns));
+
+	nstime_initialize_operand(time);
+	time->ns *= multiplier;
+}
+
+void
+nstime_idivide(nstime_t *time, uint64_t divisor) {
+	nstime_assert_initialized(time);
+	assert(divisor != 0);
+
+	nstime_initialize_operand(time);
+	time->ns /= divisor;
+}
+
+uint64_t
+nstime_divide(const nstime_t *time, const nstime_t *divisor) {
+	nstime_pair_assert_initialized(time, divisor);
+	assert(divisor->ns != 0);
+
+	/* No initialize operand -- *time itself remains unchanged. */
+	return time->ns / divisor->ns;
+}
+
+/* Returns time since *past, w/o updating *past. */
+uint64_t
+nstime_ns_since(const nstime_t *past) {
+	nstime_assert_initialized(past);
+
+	nstime_t now;
+	nstime_copy(&now, past);
+	nstime_update(&now);
+
+	assert(nstime_compare(&now, past) >= 0);
+	return now.ns - past->ns;
+}
+
+#ifdef _WIN32
+#  define NSTIME_MONOTONIC true
+static void
+nstime_get(nstime_t *time) {
+	FILETIME ft;
+	uint64_t ticks_100ns;
+
+	GetSystemTimeAsFileTime(&ft);
+	ticks_100ns = (((uint64_t)ft.dwHighDateTime) << 32) | ft.dwLowDateTime;
+
+	nstime_init(time, ticks_100ns * 100);
+}
+#elif defined(JEMALLOC_HAVE_CLOCK_MONOTONIC_COARSE)
+#  define NSTIME_MONOTONIC true
+static void
+nstime_get(nstime_t *time) {
+	struct timespec ts;
+
+	clock_gettime(CLOCK_MONOTONIC_COARSE, &ts);
+	nstime_init2(time, ts.tv_sec, ts.tv_nsec);
+}
+#elif defined(JEMALLOC_HAVE_CLOCK_MONOTONIC)
+#  define NSTIME_MONOTONIC true
+static void
+nstime_get(nstime_t *time) {
+	struct timespec ts;
+
+	clock_gettime(CLOCK_MONOTONIC, &ts);
+	nstime_init2(time, ts.tv_sec, ts.tv_nsec);
+}
+#elif defined(JEMALLOC_HAVE_MACH_ABSOLUTE_TIME)
+#  define NSTIME_MONOTONIC true
+static void
+nstime_get(nstime_t *time) {
+	nstime_init(time, mach_absolute_time());
+}
+#else
+#  define NSTIME_MONOTONIC false
+static void
+nstime_get(nstime_t *time) {
+	struct timeval tv;
+
+	gettimeofday(&tv, NULL);
+	nstime_init2(time, tv.tv_sec, tv.tv_usec * 1000);
+}
+#endif
+
+static bool
+nstime_monotonic_impl(void) {
+	return NSTIME_MONOTONIC;
+#undef NSTIME_MONOTONIC
+}
+nstime_monotonic_t *JET_MUTABLE nstime_monotonic = nstime_monotonic_impl;
+
+prof_time_res_t opt_prof_time_res =
+	prof_time_res_default;
+
+const char *prof_time_res_mode_names[] = {
+	"default",
+	"high",
+};
+
+
+static void
+nstime_get_realtime(nstime_t *time) {
+#if defined(JEMALLOC_HAVE_CLOCK_REALTIME) && !defined(_WIN32)
+	struct timespec ts;
+
+	clock_gettime(CLOCK_REALTIME, &ts);
+	nstime_init2(time, ts.tv_sec, ts.tv_nsec);
+#else
+	unreachable();
+#endif
+}
+
+static void
+nstime_prof_update_impl(nstime_t *time) {
+	nstime_t old_time;
+
+	nstime_copy(&old_time, time);
+
+	if (opt_prof_time_res == prof_time_res_high) {
+		nstime_get_realtime(time);
+	} else {
+		nstime_get(time);
+	}
+}
+nstime_prof_update_t *JET_MUTABLE nstime_prof_update = nstime_prof_update_impl;
+
+static void
+nstime_update_impl(nstime_t *time) {
+	nstime_t old_time;
+
+	nstime_copy(&old_time, time);
+	nstime_get(time);
+
+	/* Handle non-monotonic clocks. */
+	if (unlikely(nstime_compare(&old_time, time) > 0)) {
+		nstime_copy(time, &old_time);
+	}
+}
+nstime_update_t *JET_MUTABLE nstime_update = nstime_update_impl;
+
+void
+nstime_init_update(nstime_t *time) {
+	nstime_init_zero(time);
+	nstime_update(time);
+}
+
+void
+nstime_prof_init_update(nstime_t *time) {
+	nstime_init_zero(time);
+	nstime_prof_update(time);
+}
+
+
diff --git a/deps/jemalloc/src/pa.c b/deps/jemalloc/src/pa.c
new file mode 100644
index 0000000..eb7e462
--- /dev/null
+++ b/deps/jemalloc/src/pa.c
@@ -0,0 +1,277 @@
+#include "jemalloc/internal/jemalloc_preamble.h"
+#include "jemalloc/internal/jemalloc_internal_includes.h"
+
+#include "jemalloc/internal/san.h"
+#include "jemalloc/internal/hpa.h"
+
+static void
+pa_nactive_add(pa_shard_t *shard, size_t add_pages) {
+	atomic_fetch_add_zu(&shard->nactive, add_pages, ATOMIC_RELAXED);
+}
+
+static void
+pa_nactive_sub(pa_shard_t *shard, size_t sub_pages) {
+	assert(atomic_load_zu(&shard->nactive, ATOMIC_RELAXED) >= sub_pages);
+	atomic_fetch_sub_zu(&shard->nactive, sub_pages, ATOMIC_RELAXED);
+}
+
+bool
+pa_central_init(pa_central_t *central, base_t *base, bool hpa,
+    hpa_hooks_t *hpa_hooks) {
+	bool err;
+	if (hpa) {
+		err = hpa_central_init(&central->hpa, base, hpa_hooks);
+		if (err) {
+			return true;
+		}
+	}
+	return false;
+}
+
+bool
+pa_shard_init(tsdn_t *tsdn, pa_shard_t *shard, pa_central_t *central,
+    emap_t *emap, base_t *base, unsigned ind, pa_shard_stats_t *stats,
+    malloc_mutex_t *stats_mtx, nstime_t *cur_time,
+    size_t pac_oversize_threshold, ssize_t dirty_decay_ms,
+    ssize_t muzzy_decay_ms) {
+	/* This will change eventually, but for now it should hold. */
+	assert(base_ind_get(base) == ind);
+	if (edata_cache_init(&shard->edata_cache, base)) {
+		return true;
+	}
+
+	if (pac_init(tsdn, &shard->pac, base, emap, &shard->edata_cache,
+	    cur_time, pac_oversize_threshold, dirty_decay_ms, muzzy_decay_ms,
+	    &stats->pac_stats, stats_mtx)) {
+		return true;
+	}
+
+	shard->ind = ind;
+
+	shard->ever_used_hpa = false;
+	atomic_store_b(&shard->use_hpa, false, ATOMIC_RELAXED);
+
+	atomic_store_zu(&shard->nactive, 0, ATOMIC_RELAXED);
+
+	shard->stats_mtx = stats_mtx;
+	shard->stats = stats;
+	memset(shard->stats, 0, sizeof(*shard->stats));
+
+	shard->central = central;
+	shard->emap = emap;
+	shard->base = base;
+
+	return false;
+}
+
+bool
+pa_shard_enable_hpa(tsdn_t *tsdn, pa_shard_t *shard,
+    const hpa_shard_opts_t *hpa_opts, const sec_opts_t *hpa_sec_opts) {
+	if (hpa_shard_init(&shard->hpa_shard, &shard->central->hpa, shard->emap,
+	    shard->base, &shard->edata_cache, shard->ind, hpa_opts)) {
+		return true;
+	}
+	if (sec_init(tsdn, &shard->hpa_sec, shard->base, &shard->hpa_shard.pai,
+	    hpa_sec_opts)) {
+		return true;
+	}
+	shard->ever_used_hpa = true;
+	atomic_store_b(&shard->use_hpa, true, ATOMIC_RELAXED);
+
+	return false;
+}
+
+void
+pa_shard_disable_hpa(tsdn_t *tsdn, pa_shard_t *shard) {
+	atomic_store_b(&shard->use_hpa, false, ATOMIC_RELAXED);
+	if (shard->ever_used_hpa) {
+		sec_disable(tsdn, &shard->hpa_sec);
+		hpa_shard_disable(tsdn, &shard->hpa_shard);
+	}
+}
+
+void
+pa_shard_reset(tsdn_t *tsdn, pa_shard_t *shard) {
+	atomic_store_zu(&shard->nactive, 0, ATOMIC_RELAXED);
+	if (shard->ever_used_hpa) {
+		sec_flush(tsdn, &shard->hpa_sec);
+	}
+}
+
+static bool
+pa_shard_uses_hpa(pa_shard_t *shard) {
+	return atomic_load_b(&shard->use_hpa, ATOMIC_RELAXED);
+}
+
+void
+pa_shard_destroy(tsdn_t *tsdn, pa_shard_t *shard) {
+	pac_destroy(tsdn, &shard->pac);
+	if (shard->ever_used_hpa) {
+		sec_flush(tsdn, &shard->hpa_sec);
+		hpa_shard_disable(tsdn, &shard->hpa_shard);
+	}
+}
+
+static pai_t *
+pa_get_pai(pa_shard_t *shard, edata_t *edata) {
+	return (edata_pai_get(edata) == EXTENT_PAI_PAC
+	    ? &shard->pac.pai : &shard->hpa_sec.pai);
+}
+
+edata_t *
+pa_alloc(tsdn_t *tsdn, pa_shard_t *shard, size_t size, size_t alignment,
+    bool slab, szind_t szind, bool zero, bool guarded,
+    bool *deferred_work_generated) {
+	witness_assert_depth_to_rank(tsdn_witness_tsdp_get(tsdn),
+	    WITNESS_RANK_CORE, 0);
+	assert(!guarded || alignment <= PAGE);
+
+	edata_t *edata = NULL;
+	if (!guarded && pa_shard_uses_hpa(shard)) {
+		edata = pai_alloc(tsdn, &shard->hpa_sec.pai, size, alignment,
+		    zero, /* guarded */ false, slab, deferred_work_generated);
+	}
+	/*
+	 * Fall back to the PAC if the HPA is off or couldn't serve the given
+	 * allocation request.
+	 */
+	if (edata == NULL) {
+		edata = pai_alloc(tsdn, &shard->pac.pai, size, alignment, zero,
+		    guarded, slab, deferred_work_generated);
+	}
+	if (edata != NULL) {
+		assert(edata_size_get(edata) == size);
+		pa_nactive_add(shard, size >> LG_PAGE);
+		emap_remap(tsdn, shard->emap, edata, szind, slab);
+		edata_szind_set(edata, szind);
+		edata_slab_set(edata, slab);
+		if (slab && (size > 2 * PAGE)) {
+			emap_register_interior(tsdn, shard->emap, edata, szind);
+		}
+		assert(edata_arena_ind_get(edata) == shard->ind);
+	}
+	return edata;
+}
+
+bool
+pa_expand(tsdn_t *tsdn, pa_shard_t *shard, edata_t *edata, size_t old_size,
+    size_t new_size, szind_t szind, bool zero, bool *deferred_work_generated) {
+	assert(new_size > old_size);
+	assert(edata_size_get(edata) == old_size);
+	assert((new_size & PAGE_MASK) == 0);
+	if (edata_guarded_get(edata)) {
+		return true;
+	}
+	size_t expand_amount = new_size - old_size;
+
+	pai_t *pai = pa_get_pai(shard, edata);
+
+	bool error = pai_expand(tsdn, pai, edata, old_size, new_size, zero,
+	    deferred_work_generated);
+	if (error) {
+		return true;
+	}
+
+	pa_nactive_add(shard, expand_amount >> LG_PAGE);
+	edata_szind_set(edata, szind);
+	emap_remap(tsdn, shard->emap, edata, szind, /* slab */ false);
+	return false;
+}
+
+bool
+pa_shrink(tsdn_t *tsdn, pa_shard_t *shard, edata_t *edata, size_t old_size,
+    size_t new_size, szind_t szind, bool *deferred_work_generated) {
+	assert(new_size < old_size);
+	assert(edata_size_get(edata) == old_size);
+	assert((new_size & PAGE_MASK) == 0);
+	if (edata_guarded_get(edata)) {
+		return true;
+	}
+	size_t shrink_amount = old_size - new_size;
+
+	pai_t *pai = pa_get_pai(shard, edata);
+	bool error = pai_shrink(tsdn, pai, edata, old_size, new_size,
+	    deferred_work_generated);
+	if (error) {
+		return true;
+	}
+	pa_nactive_sub(shard, shrink_amount >> LG_PAGE);
+
+	edata_szind_set(edata, szind);
+	emap_remap(tsdn, shard->emap, edata, szind, /* slab */ false);
+	return false;
+}
+
+void
+pa_dalloc(tsdn_t *tsdn, pa_shard_t *shard, edata_t *edata,
+    bool *deferred_work_generated) {
+	emap_remap(tsdn, shard->emap, edata, SC_NSIZES, /* slab */ false);
+	if (edata_slab_get(edata)) {
+		emap_deregister_interior(tsdn, shard->emap, edata);
+		/*
+		 * The slab state of the extent isn't cleared.  It may be used
+		 * by the pai implementation, e.g. to make caching decisions.
+		 */
+	}
+	edata_addr_set(edata, edata_base_get(edata));
+	edata_szind_set(edata, SC_NSIZES);
+	pa_nactive_sub(shard, edata_size_get(edata) >> LG_PAGE);
+	pai_t *pai = pa_get_pai(shard, edata);
+	pai_dalloc(tsdn, pai, edata, deferred_work_generated);
+}
+
+bool
+pa_shard_retain_grow_limit_get_set(tsdn_t *tsdn, pa_shard_t *shard,
+    size_t *old_limit, size_t *new_limit) {
+	return pac_retain_grow_limit_get_set(tsdn, &shard->pac, old_limit,
+	    new_limit);
+}
+
+bool
+pa_decay_ms_set(tsdn_t *tsdn, pa_shard_t *shard, extent_state_t state,
+    ssize_t decay_ms, pac_purge_eagerness_t eagerness) {
+	return pac_decay_ms_set(tsdn, &shard->pac, state, decay_ms, eagerness);
+}
+
+ssize_t
+pa_decay_ms_get(pa_shard_t *shard, extent_state_t state) {
+	return pac_decay_ms_get(&shard->pac, state);
+}
+
+void
+pa_shard_set_deferral_allowed(tsdn_t *tsdn, pa_shard_t *shard,
+    bool deferral_allowed) {
+	if (pa_shard_uses_hpa(shard)) {
+		hpa_shard_set_deferral_allowed(tsdn, &shard->hpa_shard,
+		    deferral_allowed);
+	}
+}
+
+void
+pa_shard_do_deferred_work(tsdn_t *tsdn, pa_shard_t *shard) {
+	if (pa_shard_uses_hpa(shard)) {
+		hpa_shard_do_deferred_work(tsdn, &shard->hpa_shard);
+	}
+}
+
+/*
+ * Get time until next deferred work ought to happen. If there are multiple
+ * things that have been deferred, this function calculates the time until
+ * the soonest of those things.
+ */
+uint64_t
+pa_shard_time_until_deferred_work(tsdn_t *tsdn, pa_shard_t *shard) {
+	uint64_t time = pai_time_until_deferred_work(tsdn, &shard->pac.pai);
+	if (time == BACKGROUND_THREAD_DEFERRED_MIN) {
+		return time;
+	}
+
+	if (pa_shard_uses_hpa(shard)) {
+		uint64_t hpa =
+		    pai_time_until_deferred_work(tsdn, &shard->hpa_shard.pai);
+		if (hpa < time) {
+			time = hpa;
+		}
+	}
+	return time;
+}
diff --git a/deps/jemalloc/src/pa_extra.c b/deps/jemalloc/src/pa_extra.c
new file mode 100644
index 0000000..0f488be
--- /dev/null
+++ b/deps/jemalloc/src/pa_extra.c
@@ -0,0 +1,191 @@
+#include "jemalloc/internal/jemalloc_preamble.h"
+#include "jemalloc/internal/jemalloc_internal_includes.h"
+
+/*
+ * This file is logically part of the PA module.  While pa.c contains the core
+ * allocator functionality, this file contains boring integration functionality;
+ * things like the pre- and post- fork handlers, and stats merging for CTL
+ * refreshes.
+ */
+
+void
+pa_shard_prefork0(tsdn_t *tsdn, pa_shard_t *shard) {
+	malloc_mutex_prefork(tsdn, &shard->pac.decay_dirty.mtx);
+	malloc_mutex_prefork(tsdn, &shard->pac.decay_muzzy.mtx);
+}
+
+void
+pa_shard_prefork2(tsdn_t *tsdn, pa_shard_t *shard) {
+	if (shard->ever_used_hpa) {
+		sec_prefork2(tsdn, &shard->hpa_sec);
+	}
+}
+
+void
+pa_shard_prefork3(tsdn_t *tsdn, pa_shard_t *shard) {
+	malloc_mutex_prefork(tsdn, &shard->pac.grow_mtx);
+	if (shard->ever_used_hpa) {
+		hpa_shard_prefork3(tsdn, &shard->hpa_shard);
+	}
+}
+
+void
+pa_shard_prefork4(tsdn_t *tsdn, pa_shard_t *shard) {
+	ecache_prefork(tsdn, &shard->pac.ecache_dirty);
+	ecache_prefork(tsdn, &shard->pac.ecache_muzzy);
+	ecache_prefork(tsdn, &shard->pac.ecache_retained);
+	if (shard->ever_used_hpa) {
+		hpa_shard_prefork4(tsdn, &shard->hpa_shard);
+	}
+}
+
+void
+pa_shard_prefork5(tsdn_t *tsdn, pa_shard_t *shard) {
+	edata_cache_prefork(tsdn, &shard->edata_cache);
+}
+
+void
+pa_shard_postfork_parent(tsdn_t *tsdn, pa_shard_t *shard) {
+	edata_cache_postfork_parent(tsdn, &shard->edata_cache);
+	ecache_postfork_parent(tsdn, &shard->pac.ecache_dirty);
+	ecache_postfork_parent(tsdn, &shard->pac.ecache_muzzy);
+	ecache_postfork_parent(tsdn, &shard->pac.ecache_retained);
+	malloc_mutex_postfork_parent(tsdn, &shard->pac.grow_mtx);
+	malloc_mutex_postfork_parent(tsdn, &shard->pac.decay_dirty.mtx);
+	malloc_mutex_postfork_parent(tsdn, &shard->pac.decay_muzzy.mtx);
+	if (shard->ever_used_hpa) {
+		sec_postfork_parent(tsdn, &shard->hpa_sec);
+		hpa_shard_postfork_parent(tsdn, &shard->hpa_shard);
+	}
+}
+
+void
+pa_shard_postfork_child(tsdn_t *tsdn, pa_shard_t *shard) {
+	edata_cache_postfork_child(tsdn, &shard->edata_cache);
+	ecache_postfork_child(tsdn, &shard->pac.ecache_dirty);
+	ecache_postfork_child(tsdn, &shard->pac.ecache_muzzy);
+	ecache_postfork_child(tsdn, &shard->pac.ecache_retained);
+	malloc_mutex_postfork_child(tsdn, &shard->pac.grow_mtx);
+	malloc_mutex_postfork_child(tsdn, &shard->pac.decay_dirty.mtx);
+	malloc_mutex_postfork_child(tsdn, &shard->pac.decay_muzzy.mtx);
+	if (shard->ever_used_hpa) {
+		sec_postfork_child(tsdn, &shard->hpa_sec);
+		hpa_shard_postfork_child(tsdn, &shard->hpa_shard);
+	}
+}
+
+void
+pa_shard_basic_stats_merge(pa_shard_t *shard, size_t *nactive, size_t *ndirty,
+    size_t *nmuzzy) {
+	*nactive += atomic_load_zu(&shard->nactive, ATOMIC_RELAXED);
+	*ndirty += ecache_npages_get(&shard->pac.ecache_dirty);
+	*nmuzzy += ecache_npages_get(&shard->pac.ecache_muzzy);
+}
+
+void
+pa_shard_stats_merge(tsdn_t *tsdn, pa_shard_t *shard,
+    pa_shard_stats_t *pa_shard_stats_out, pac_estats_t *estats_out,
+    hpa_shard_stats_t *hpa_stats_out, sec_stats_t *sec_stats_out,
+    size_t *resident) {
+	cassert(config_stats);
+
+	pa_shard_stats_out->pac_stats.retained +=
+	    ecache_npages_get(&shard->pac.ecache_retained) << LG_PAGE;
+	pa_shard_stats_out->edata_avail += atomic_load_zu(
+	    &shard->edata_cache.count, ATOMIC_RELAXED);
+
+	size_t resident_pgs = 0;
+	resident_pgs += atomic_load_zu(&shard->nactive, ATOMIC_RELAXED);
+	resident_pgs += ecache_npages_get(&shard->pac.ecache_dirty);
+	*resident += (resident_pgs << LG_PAGE);
+
+	/* Dirty decay stats */
+	locked_inc_u64_unsynchronized(
+	    &pa_shard_stats_out->pac_stats.decay_dirty.npurge,
+	    locked_read_u64(tsdn, LOCKEDINT_MTX(*shard->stats_mtx),
+	    &shard->pac.stats->decay_dirty.npurge));
+	locked_inc_u64_unsynchronized(
+	    &pa_shard_stats_out->pac_stats.decay_dirty.nmadvise,
+	    locked_read_u64(tsdn, LOCKEDINT_MTX(*shard->stats_mtx),
+	    &shard->pac.stats->decay_dirty.nmadvise));
+	locked_inc_u64_unsynchronized(
+	    &pa_shard_stats_out->pac_stats.decay_dirty.purged,
+	    locked_read_u64(tsdn, LOCKEDINT_MTX(*shard->stats_mtx),
+	    &shard->pac.stats->decay_dirty.purged));
+
+	/* Muzzy decay stats */
+	locked_inc_u64_unsynchronized(
+	    &pa_shard_stats_out->pac_stats.decay_muzzy.npurge,
+	    locked_read_u64(tsdn, LOCKEDINT_MTX(*shard->stats_mtx),
+	    &shard->pac.stats->decay_muzzy.npurge));
+	locked_inc_u64_unsynchronized(
+	    &pa_shard_stats_out->pac_stats.decay_muzzy.nmadvise,
+	    locked_read_u64(tsdn, LOCKEDINT_MTX(*shard->stats_mtx),
+	    &shard->pac.stats->decay_muzzy.nmadvise));
+	locked_inc_u64_unsynchronized(
+	    &pa_shard_stats_out->pac_stats.decay_muzzy.purged,
+	    locked_read_u64(tsdn, LOCKEDINT_MTX(*shard->stats_mtx),
+	    &shard->pac.stats->decay_muzzy.purged));
+
+	atomic_load_add_store_zu(&pa_shard_stats_out->pac_stats.abandoned_vm,
+	    atomic_load_zu(&shard->pac.stats->abandoned_vm, ATOMIC_RELAXED));
+
+	for (pszind_t i = 0; i < SC_NPSIZES; i++) {
+		size_t dirty, muzzy, retained, dirty_bytes, muzzy_bytes,
+		    retained_bytes;
+		dirty = ecache_nextents_get(&shard->pac.ecache_dirty, i);
+		muzzy = ecache_nextents_get(&shard->pac.ecache_muzzy, i);
+		retained = ecache_nextents_get(&shard->pac.ecache_retained, i);
+		dirty_bytes = ecache_nbytes_get(&shard->pac.ecache_dirty, i);
+		muzzy_bytes = ecache_nbytes_get(&shard->pac.ecache_muzzy, i);
+		retained_bytes = ecache_nbytes_get(&shard->pac.ecache_retained,
+		    i);
+
+		estats_out[i].ndirty = dirty;
+		estats_out[i].nmuzzy = muzzy;
+		estats_out[i].nretained = retained;
+		estats_out[i].dirty_bytes = dirty_bytes;
+		estats_out[i].muzzy_bytes = muzzy_bytes;
+		estats_out[i].retained_bytes = retained_bytes;
+	}
+
+	if (shard->ever_used_hpa) {
+		hpa_shard_stats_merge(tsdn, &shard->hpa_shard, hpa_stats_out);
+		sec_stats_merge(tsdn, &shard->hpa_sec, sec_stats_out);
+	}
+}
+
+static void
+pa_shard_mtx_stats_read_single(tsdn_t *tsdn, mutex_prof_data_t *mutex_prof_data,
+    malloc_mutex_t *mtx, int ind) {
+	malloc_mutex_lock(tsdn, mtx);
+	malloc_mutex_prof_read(tsdn, &mutex_prof_data[ind], mtx);
+	malloc_mutex_unlock(tsdn, mtx);
+}
+
+void
+pa_shard_mtx_stats_read(tsdn_t *tsdn, pa_shard_t *shard,
+    mutex_prof_data_t mutex_prof_data[mutex_prof_num_arena_mutexes]) {
+	pa_shard_mtx_stats_read_single(tsdn, mutex_prof_data,
+	    &shard->edata_cache.mtx, arena_prof_mutex_extent_avail);
+	pa_shard_mtx_stats_read_single(tsdn, mutex_prof_data,
+	    &shard->pac.ecache_dirty.mtx, arena_prof_mutex_extents_dirty);
+	pa_shard_mtx_stats_read_single(tsdn, mutex_prof_data,
+	    &shard->pac.ecache_muzzy.mtx, arena_prof_mutex_extents_muzzy);
+	pa_shard_mtx_stats_read_single(tsdn, mutex_prof_data,
+	    &shard->pac.ecache_retained.mtx, arena_prof_mutex_extents_retained);
+	pa_shard_mtx_stats_read_single(tsdn, mutex_prof_data,
+	    &shard->pac.decay_dirty.mtx, arena_prof_mutex_decay_dirty);
+	pa_shard_mtx_stats_read_single(tsdn, mutex_prof_data,
+	    &shard->pac.decay_muzzy.mtx, arena_prof_mutex_decay_muzzy);
+
+	if (shard->ever_used_hpa) {
+		pa_shard_mtx_stats_read_single(tsdn, mutex_prof_data,
+		    &shard->hpa_shard.mtx, arena_prof_mutex_hpa_shard);
+		pa_shard_mtx_stats_read_single(tsdn, mutex_prof_data,
+		    &shard->hpa_shard.grow_mtx,
+		    arena_prof_mutex_hpa_shard_grow);
+		sec_mutex_stats_read(tsdn, &shard->hpa_sec,
+		    &mutex_prof_data[arena_prof_mutex_hpa_sec]);
+	}
+}
diff --git a/deps/jemalloc/src/pac.c b/deps/jemalloc/src/pac.c
new file mode 100644
index 0000000..53e3d82
--- /dev/null
+++ b/deps/jemalloc/src/pac.c
@@ -0,0 +1,587 @@
+#include "jemalloc/internal/jemalloc_preamble.h"
+#include "jemalloc/internal/jemalloc_internal_includes.h"
+
+#include "jemalloc/internal/pac.h"
+#include "jemalloc/internal/san.h"
+
+static edata_t *pac_alloc_impl(tsdn_t *tsdn, pai_t *self, size_t size,
+    size_t alignment, bool zero, bool guarded, bool frequent_reuse,
+    bool *deferred_work_generated);
+static bool pac_expand_impl(tsdn_t *tsdn, pai_t *self, edata_t *edata,
+    size_t old_size, size_t new_size, bool zero, bool *deferred_work_generated);
+static bool pac_shrink_impl(tsdn_t *tsdn, pai_t *self, edata_t *edata,
+    size_t old_size, size_t new_size, bool *deferred_work_generated);
+static void pac_dalloc_impl(tsdn_t *tsdn, pai_t *self, edata_t *edata,
+    bool *deferred_work_generated);
+static uint64_t pac_time_until_deferred_work(tsdn_t *tsdn, pai_t *self);
+
+static inline void
+pac_decay_data_get(pac_t *pac, extent_state_t state,
+    decay_t **r_decay, pac_decay_stats_t **r_decay_stats, ecache_t **r_ecache) {
+	switch(state) {
+	case extent_state_dirty:
+		*r_decay = &pac->decay_dirty;
+		*r_decay_stats = &pac->stats->decay_dirty;
+		*r_ecache = &pac->ecache_dirty;
+		return;
+	case extent_state_muzzy:
+		*r_decay = &pac->decay_muzzy;
+		*r_decay_stats = &pac->stats->decay_muzzy;
+		*r_ecache = &pac->ecache_muzzy;
+		return;
+	default:
+		unreachable();
+	}
+}
+
+bool
+pac_init(tsdn_t *tsdn, pac_t *pac, base_t *base, emap_t *emap,
+    edata_cache_t *edata_cache, nstime_t *cur_time,
+    size_t pac_oversize_threshold, ssize_t dirty_decay_ms,
+    ssize_t muzzy_decay_ms, pac_stats_t *pac_stats, malloc_mutex_t *stats_mtx) {
+	unsigned ind = base_ind_get(base);
+	/*
+	 * Delay coalescing for dirty extents despite the disruptive effect on
+	 * memory layout for best-fit extent allocation, since cached extents
+	 * are likely to be reused soon after deallocation, and the cost of
+	 * merging/splitting extents is non-trivial.
+	 */
+	if (ecache_init(tsdn, &pac->ecache_dirty, extent_state_dirty, ind,
+	    /* delay_coalesce */ true)) {
+		return true;
+	}
+	/*
+	 * Coalesce muzzy extents immediately, because operations on them are in
+	 * the critical path much less often than for dirty extents.
+	 */
+	if (ecache_init(tsdn, &pac->ecache_muzzy, extent_state_muzzy, ind,
+	    /* delay_coalesce */ false)) {
+		return true;
+	}
+	/*
+	 * Coalesce retained extents immediately, in part because they will
+	 * never be evicted (and therefore there's no opportunity for delayed
+	 * coalescing), but also because operations on retained extents are not
+	 * in the critical path.
+	 */
+	if (ecache_init(tsdn, &pac->ecache_retained, extent_state_retained,
+	    ind, /* delay_coalesce */ false)) {
+		return true;
+	}
+	exp_grow_init(&pac->exp_grow);
+	if (malloc_mutex_init(&pac->grow_mtx, "extent_grow",
+	    WITNESS_RANK_EXTENT_GROW, malloc_mutex_rank_exclusive)) {
+		return true;
+	}
+	atomic_store_zu(&pac->oversize_threshold, pac_oversize_threshold,
+	    ATOMIC_RELAXED);
+	if (decay_init(&pac->decay_dirty, cur_time, dirty_decay_ms)) {
+		return true;
+	}
+	if (decay_init(&pac->decay_muzzy, cur_time, muzzy_decay_ms)) {
+		return true;
+	}
+	if (san_bump_alloc_init(&pac->sba)) {
+		return true;
+	}
+
+	pac->base = base;
+	pac->emap = emap;
+	pac->edata_cache = edata_cache;
+	pac->stats = pac_stats;
+	pac->stats_mtx = stats_mtx;
+	atomic_store_zu(&pac->extent_sn_next, 0, ATOMIC_RELAXED);
+
+	pac->pai.alloc = &pac_alloc_impl;
+	pac->pai.alloc_batch = &pai_alloc_batch_default;
+	pac->pai.expand = &pac_expand_impl;
+	pac->pai.shrink = &pac_shrink_impl;
+	pac->pai.dalloc = &pac_dalloc_impl;
+	pac->pai.dalloc_batch = &pai_dalloc_batch_default;
+	pac->pai.time_until_deferred_work = &pac_time_until_deferred_work;
+
+	return false;
+}
+
+static inline bool
+pac_may_have_muzzy(pac_t *pac) {
+	return pac_decay_ms_get(pac, extent_state_muzzy) != 0;
+}
+
+static edata_t *
+pac_alloc_real(tsdn_t *tsdn, pac_t *pac, ehooks_t *ehooks, size_t size,
+    size_t alignment, bool zero, bool guarded) {
+	assert(!guarded || alignment <= PAGE);
+
+	edata_t *edata = ecache_alloc(tsdn, pac, ehooks, &pac->ecache_dirty,
+	    NULL, size, alignment, zero, guarded);
+
+	if (edata == NULL && pac_may_have_muzzy(pac)) {
+		edata = ecache_alloc(tsdn, pac, ehooks, &pac->ecache_muzzy,
+		    NULL, size, alignment, zero, guarded);
+	}
+	if (edata == NULL) {
+		edata = ecache_alloc_grow(tsdn, pac, ehooks,
+		    &pac->ecache_retained, NULL, size, alignment, zero,
+		    guarded);
+		if (config_stats && edata != NULL) {
+			atomic_fetch_add_zu(&pac->stats->pac_mapped, size,
+			    ATOMIC_RELAXED);
+		}
+	}
+
+	return edata;
+}
+
+static edata_t *
+pac_alloc_new_guarded(tsdn_t *tsdn, pac_t *pac, ehooks_t *ehooks, size_t size,
+    size_t alignment, bool zero, bool frequent_reuse) {
+	assert(alignment <= PAGE);
+
+	edata_t *edata;
+	if (san_bump_enabled() && frequent_reuse) {
+		edata = san_bump_alloc(tsdn, &pac->sba, pac, ehooks, size,
+		    zero);
+	} else {
+		size_t size_with_guards = san_two_side_guarded_sz(size);
+		/* Alloc a non-guarded extent first.*/
+		edata = pac_alloc_real(tsdn, pac, ehooks, size_with_guards,
+		    /* alignment */ PAGE, zero, /* guarded */ false);
+		if (edata != NULL) {
+			/* Add guards around it. */
+			assert(edata_size_get(edata) == size_with_guards);
+			san_guard_pages_two_sided(tsdn, ehooks, edata,
+			    pac->emap, true);
+		}
+	}
+	assert(edata == NULL || (edata_guarded_get(edata) &&
+	    edata_size_get(edata) == size));
+
+	return edata;
+}
+
+static edata_t *
+pac_alloc_impl(tsdn_t *tsdn, pai_t *self, size_t size, size_t alignment,
+    bool zero, bool guarded, bool frequent_reuse,
+    bool *deferred_work_generated) {
+	pac_t *pac = (pac_t *)self;
+	ehooks_t *ehooks = pac_ehooks_get(pac);
+
+	edata_t *edata = NULL;
+	/*
+	 * The condition is an optimization - not frequently reused guarded
+	 * allocations are never put in the ecache.  pac_alloc_real also
+	 * doesn't grow retained for guarded allocations.  So pac_alloc_real
+	 * for such allocations would always return NULL.
+	 * */
+	if (!guarded || frequent_reuse) {
+		edata =	pac_alloc_real(tsdn, pac, ehooks, size, alignment,
+		    zero, guarded);
+	}
+	if (edata == NULL && guarded) {
+		/* No cached guarded extents; creating a new one. */
+		edata = pac_alloc_new_guarded(tsdn, pac, ehooks, size,
+		    alignment, zero, frequent_reuse);
+	}
+
+	return edata;
+}
+
+static bool
+pac_expand_impl(tsdn_t *tsdn, pai_t *self, edata_t *edata, size_t old_size,
+    size_t new_size, bool zero, bool *deferred_work_generated) {
+	pac_t *pac = (pac_t *)self;
+	ehooks_t *ehooks = pac_ehooks_get(pac);
+
+	size_t mapped_add = 0;
+	size_t expand_amount = new_size - old_size;
+
+	if (ehooks_merge_will_fail(ehooks)) {
+		return true;
+	}
+	edata_t *trail = ecache_alloc(tsdn, pac, ehooks, &pac->ecache_dirty,
+	    edata, expand_amount, PAGE, zero, /* guarded*/ false);
+	if (trail == NULL) {
+		trail = ecache_alloc(tsdn, pac, ehooks, &pac->ecache_muzzy,
+		    edata, expand_amount, PAGE, zero, /* guarded*/ false);
+	}
+	if (trail == NULL) {
+		trail = ecache_alloc_grow(tsdn, pac, ehooks,
+		    &pac->ecache_retained, edata, expand_amount, PAGE, zero,
+		    /* guarded */ false);
+		mapped_add = expand_amount;
+	}
+	if (trail == NULL) {
+		return true;
+	}
+	if (extent_merge_wrapper(tsdn, pac, ehooks, edata, trail)) {
+		extent_dalloc_wrapper(tsdn, pac, ehooks, trail);
+		return true;
+	}
+	if (config_stats && mapped_add > 0) {
+		atomic_fetch_add_zu(&pac->stats->pac_mapped, mapped_add,
+		    ATOMIC_RELAXED);
+	}
+	return false;
+}
+
+static bool
+pac_shrink_impl(tsdn_t *tsdn, pai_t *self, edata_t *edata, size_t old_size,
+    size_t new_size, bool *deferred_work_generated) {
+	pac_t *pac = (pac_t *)self;
+	ehooks_t *ehooks = pac_ehooks_get(pac);
+
+	size_t shrink_amount = old_size - new_size;
+
+	if (ehooks_split_will_fail(ehooks)) {
+		return true;
+	}
+
+	edata_t *trail = extent_split_wrapper(tsdn, pac, ehooks, edata,
+	    new_size, shrink_amount, /* holding_core_locks */ false);
+	if (trail == NULL) {
+		return true;
+	}
+	ecache_dalloc(tsdn, pac, ehooks, &pac->ecache_dirty, trail);
+	*deferred_work_generated = true;
+	return false;
+}
+
+static void
+pac_dalloc_impl(tsdn_t *tsdn, pai_t *self, edata_t *edata,
+    bool *deferred_work_generated) {
+	pac_t *pac = (pac_t *)self;
+	ehooks_t *ehooks = pac_ehooks_get(pac);
+
+	if (edata_guarded_get(edata)) {
+		/*
+		 * Because cached guarded extents do exact fit only, large
+		 * guarded extents are restored on dalloc eagerly (otherwise
+		 * they will not be reused efficiently).  Slab sizes have a
+		 * limited number of size classes, and tend to cycle faster.
+		 *
+		 * In the case where coalesce is restrained (VirtualFree on
+		 * Windows), guarded extents are also not cached -- otherwise
+		 * during arena destroy / reset, the retained extents would not
+		 * be whole regions (i.e. they are split between regular and
+		 * guarded).
+		 */
+		if (!edata_slab_get(edata) || !maps_coalesce) {
+			assert(edata_size_get(edata) >= SC_LARGE_MINCLASS ||
+			    !maps_coalesce);
+			san_unguard_pages_two_sided(tsdn, ehooks, edata,
+			    pac->emap);
+		}
+	}
+
+	ecache_dalloc(tsdn, pac, ehooks, &pac->ecache_dirty, edata);
+	/* Purging of deallocated pages is deferred */
+	*deferred_work_generated = true;
+}
+
+static inline uint64_t
+pac_ns_until_purge(tsdn_t *tsdn, decay_t *decay, size_t npages) {
+	if (malloc_mutex_trylock(tsdn, &decay->mtx)) {
+		/* Use minimal interval if decay is contended. */
+		return BACKGROUND_THREAD_DEFERRED_MIN;
+	}
+	uint64_t result = decay_ns_until_purge(decay, npages,
+	    ARENA_DEFERRED_PURGE_NPAGES_THRESHOLD);
+
+	malloc_mutex_unlock(tsdn, &decay->mtx);
+	return result;
+}
+
+static uint64_t
+pac_time_until_deferred_work(tsdn_t *tsdn, pai_t *self) {
+	uint64_t time;
+	pac_t *pac = (pac_t *)self;
+
+	time = pac_ns_until_purge(tsdn,
+	    &pac->decay_dirty,
+	    ecache_npages_get(&pac->ecache_dirty));
+	if (time == BACKGROUND_THREAD_DEFERRED_MIN) {
+		return time;
+	}
+
+	uint64_t muzzy = pac_ns_until_purge(tsdn,
+	    &pac->decay_muzzy,
+	    ecache_npages_get(&pac->ecache_muzzy));
+	if (muzzy < time) {
+		time = muzzy;
+	}
+	return time;
+}
+
+bool
+pac_retain_grow_limit_get_set(tsdn_t *tsdn, pac_t *pac, size_t *old_limit,
+    size_t *new_limit) {
+	pszind_t new_ind JEMALLOC_CC_SILENCE_INIT(0);
+	if (new_limit != NULL) {
+		size_t limit = *new_limit;
+		/* Grow no more than the new limit. */
+		if ((new_ind = sz_psz2ind(limit + 1) - 1) >= SC_NPSIZES) {
+			return true;
+		}
+	}
+
+	malloc_mutex_lock(tsdn, &pac->grow_mtx);
+	if (old_limit != NULL) {
+		*old_limit = sz_pind2sz(pac->exp_grow.limit);
+	}
+	if (new_limit != NULL) {
+		pac->exp_grow.limit = new_ind;
+	}
+	malloc_mutex_unlock(tsdn, &pac->grow_mtx);
+
+	return false;
+}
+
+static size_t
+pac_stash_decayed(tsdn_t *tsdn, pac_t *pac, ecache_t *ecache,
+    size_t npages_limit, size_t npages_decay_max,
+    edata_list_inactive_t *result) {
+	witness_assert_depth_to_rank(tsdn_witness_tsdp_get(tsdn),
+	    WITNESS_RANK_CORE, 0);
+	ehooks_t *ehooks = pac_ehooks_get(pac);
+
+	/* Stash extents according to npages_limit. */
+	size_t nstashed = 0;
+	while (nstashed < npages_decay_max) {
+		edata_t *edata = ecache_evict(tsdn, pac, ehooks, ecache,
+		    npages_limit);
+		if (edata == NULL) {
+			break;
+		}
+		edata_list_inactive_append(result, edata);
+		nstashed += edata_size_get(edata) >> LG_PAGE;
+	}
+	return nstashed;
+}
+
+static size_t
+pac_decay_stashed(tsdn_t *tsdn, pac_t *pac, decay_t *decay,
+    pac_decay_stats_t *decay_stats, ecache_t *ecache, bool fully_decay,
+    edata_list_inactive_t *decay_extents) {
+	bool err;
+
+	size_t nmadvise = 0;
+	size_t nunmapped = 0;
+	size_t npurged = 0;
+
+	ehooks_t *ehooks = pac_ehooks_get(pac);
+
+	bool try_muzzy = !fully_decay
+	    && pac_decay_ms_get(pac, extent_state_muzzy) != 0;
+
+	for (edata_t *edata = edata_list_inactive_first(decay_extents); edata !=
+	    NULL; edata = edata_list_inactive_first(decay_extents)) {
+		edata_list_inactive_remove(decay_extents, edata);
+
+		size_t size = edata_size_get(edata);
+		size_t npages = size >> LG_PAGE;
+
+		nmadvise++;
+		npurged += npages;
+
+		switch (ecache->state) {
+		case extent_state_active:
+			not_reached();
+		case extent_state_dirty:
+			if (try_muzzy) {
+				err = extent_purge_lazy_wrapper(tsdn, ehooks,
+				    edata, /* offset */ 0, size);
+				if (!err) {
+					ecache_dalloc(tsdn, pac, ehooks,
+					    &pac->ecache_muzzy, edata);
+					break;
+				}
+			}
+			JEMALLOC_FALLTHROUGH;
+		case extent_state_muzzy:
+			extent_dalloc_wrapper(tsdn, pac, ehooks, edata);
+			nunmapped += npages;
+			break;
+		case extent_state_retained:
+		default:
+			not_reached();
+		}
+	}
+
+	if (config_stats) {
+		LOCKEDINT_MTX_LOCK(tsdn, *pac->stats_mtx);
+		locked_inc_u64(tsdn, LOCKEDINT_MTX(*pac->stats_mtx),
+		    &decay_stats->npurge, 1);
+		locked_inc_u64(tsdn, LOCKEDINT_MTX(*pac->stats_mtx),
+		    &decay_stats->nmadvise, nmadvise);
+		locked_inc_u64(tsdn, LOCKEDINT_MTX(*pac->stats_mtx),
+		    &decay_stats->purged, npurged);
+		LOCKEDINT_MTX_UNLOCK(tsdn, *pac->stats_mtx);
+		atomic_fetch_sub_zu(&pac->stats->pac_mapped,
+		    nunmapped << LG_PAGE, ATOMIC_RELAXED);
+	}
+
+	return npurged;
+}
+
+/*
+ * npages_limit: Decay at most npages_decay_max pages without violating the
+ * invariant: (ecache_npages_get(ecache) >= npages_limit).  We need an upper
+ * bound on number of pages in order to prevent unbounded growth (namely in
+ * stashed), otherwise unbounded new pages could be added to extents during the
+ * current decay run, so that the purging thread never finishes.
+ */
+static void
+pac_decay_to_limit(tsdn_t *tsdn, pac_t *pac, decay_t *decay,
+    pac_decay_stats_t *decay_stats, ecache_t *ecache, bool fully_decay,
+    size_t npages_limit, size_t npages_decay_max) {
+	witness_assert_depth_to_rank(tsdn_witness_tsdp_get(tsdn),
+	    WITNESS_RANK_CORE, 1);
+
+	if (decay->purging || npages_decay_max == 0) {
+		return;
+	}
+	decay->purging = true;
+	malloc_mutex_unlock(tsdn, &decay->mtx);
+
+	edata_list_inactive_t decay_extents;
+	edata_list_inactive_init(&decay_extents);
+	size_t npurge = pac_stash_decayed(tsdn, pac, ecache, npages_limit,
+	    npages_decay_max, &decay_extents);
+	if (npurge != 0) {
+		size_t npurged = pac_decay_stashed(tsdn, pac, decay,
+		    decay_stats, ecache, fully_decay, &decay_extents);
+		assert(npurged == npurge);
+	}
+
+	malloc_mutex_lock(tsdn, &decay->mtx);
+	decay->purging = false;
+}
+
+void
+pac_decay_all(tsdn_t *tsdn, pac_t *pac, decay_t *decay,
+    pac_decay_stats_t *decay_stats, ecache_t *ecache, bool fully_decay) {
+	malloc_mutex_assert_owner(tsdn, &decay->mtx);
+	pac_decay_to_limit(tsdn, pac, decay, decay_stats, ecache, fully_decay,
+	    /* npages_limit */ 0, ecache_npages_get(ecache));
+}
+
+static void
+pac_decay_try_purge(tsdn_t *tsdn, pac_t *pac, decay_t *decay,
+    pac_decay_stats_t *decay_stats, ecache_t *ecache,
+    size_t current_npages, size_t npages_limit) {
+	if (current_npages > npages_limit) {
+		pac_decay_to_limit(tsdn, pac, decay, decay_stats, ecache,
+		    /* fully_decay */ false, npages_limit,
+		    current_npages - npages_limit);
+	}
+}
+
+bool
+pac_maybe_decay_purge(tsdn_t *tsdn, pac_t *pac, decay_t *decay,
+    pac_decay_stats_t *decay_stats, ecache_t *ecache,
+    pac_purge_eagerness_t eagerness) {
+	malloc_mutex_assert_owner(tsdn, &decay->mtx);
+
+	/* Purge all or nothing if the option is disabled. */
+	ssize_t decay_ms = decay_ms_read(decay);
+	if (decay_ms <= 0) {
+		if (decay_ms == 0) {
+			pac_decay_to_limit(tsdn, pac, decay, decay_stats,
+			    ecache, /* fully_decay */ false,
+			    /* npages_limit */ 0, ecache_npages_get(ecache));
+		}
+		return false;
+	}
+
+	/*
+	 * If the deadline has been reached, advance to the current epoch and
+	 * purge to the new limit if necessary.  Note that dirty pages created
+	 * during the current epoch are not subject to purge until a future
+	 * epoch, so as a result purging only happens during epoch advances, or
+	 * being triggered by background threads (scheduled event).
+	 */
+	nstime_t time;
+	nstime_init_update(&time);
+	size_t npages_current = ecache_npages_get(ecache);
+	bool epoch_advanced = decay_maybe_advance_epoch(decay, &time,
+	    npages_current);
+	if (eagerness == PAC_PURGE_ALWAYS
+	    || (epoch_advanced && eagerness == PAC_PURGE_ON_EPOCH_ADVANCE)) {
+		size_t npages_limit = decay_npages_limit_get(decay);
+		pac_decay_try_purge(tsdn, pac, decay, decay_stats, ecache,
+		    npages_current, npages_limit);
+	}
+
+	return epoch_advanced;
+}
+
+bool
+pac_decay_ms_set(tsdn_t *tsdn, pac_t *pac, extent_state_t state,
+    ssize_t decay_ms, pac_purge_eagerness_t eagerness) {
+	decay_t *decay;
+	pac_decay_stats_t *decay_stats;
+	ecache_t *ecache;
+	pac_decay_data_get(pac, state, &decay, &decay_stats, &ecache);
+
+	if (!decay_ms_valid(decay_ms)) {
+		return true;
+	}
+
+	malloc_mutex_lock(tsdn, &decay->mtx);
+	/*
+	 * Restart decay backlog from scratch, which may cause many dirty pages
+	 * to be immediately purged.  It would conceptually be possible to map
+	 * the old backlog onto the new backlog, but there is no justification
+	 * for such complexity since decay_ms changes are intended to be
+	 * infrequent, either between the {-1, 0, >0} states, or a one-time
+	 * arbitrary change during initial arena configuration.
+	 */
+	nstime_t cur_time;
+	nstime_init_update(&cur_time);
+	decay_reinit(decay, &cur_time, decay_ms);
+	pac_maybe_decay_purge(tsdn, pac, decay, decay_stats, ecache, eagerness);
+	malloc_mutex_unlock(tsdn, &decay->mtx);
+
+	return false;
+}
+
+ssize_t
+pac_decay_ms_get(pac_t *pac, extent_state_t state) {
+	decay_t *decay;
+	pac_decay_stats_t *decay_stats;
+	ecache_t *ecache;
+	pac_decay_data_get(pac, state, &decay, &decay_stats, &ecache);
+	return decay_ms_read(decay);
+}
+
+void
+pac_reset(tsdn_t *tsdn, pac_t *pac) {
+	/*
+	 * No-op for now; purging is still done at the arena-level.  It should
+	 * get moved in here, though.
+	 */
+	(void)tsdn;
+	(void)pac;
+}
+
+void
+pac_destroy(tsdn_t *tsdn, pac_t *pac) {
+	assert(ecache_npages_get(&pac->ecache_dirty) == 0);
+	assert(ecache_npages_get(&pac->ecache_muzzy) == 0);
+	/*
+	 * Iterate over the retained extents and destroy them.  This gives the
+	 * extent allocator underlying the extent hooks an opportunity to unmap
+	 * all retained memory without having to keep its own metadata
+	 * structures.  In practice, virtual memory for dss-allocated extents is
+	 * leaked here, so best practice is to avoid dss for arenas to be
+	 * destroyed, or provide custom extent hooks that track retained
+	 * dss-based extents for later reuse.
+	 */
+	ehooks_t *ehooks = pac_ehooks_get(pac);
+	edata_t *edata;
+	while ((edata = ecache_evict(tsdn, pac, ehooks,
+	    &pac->ecache_retained, 0)) != NULL) {
+		extent_destroy_wrapper(tsdn, pac, ehooks, edata);
+	}
+}
diff --git a/deps/jemalloc/src/pages.c b/deps/jemalloc/src/pages.c
new file mode 100644
index 0000000..8c83a7d
--- /dev/null
+++ b/deps/jemalloc/src/pages.c
@@ -0,0 +1,824 @@
+#include "jemalloc/internal/jemalloc_preamble.h"
+
+#include "jemalloc/internal/pages.h"
+
+#include "jemalloc/internal/jemalloc_internal_includes.h"
+
+#include "jemalloc/internal/assert.h"
+#include "jemalloc/internal/malloc_io.h"
+
+#ifdef JEMALLOC_SYSCTL_VM_OVERCOMMIT
+#include <sys/sysctl.h>
+#ifdef __FreeBSD__
+#include <vm/vm_param.h>
+#endif
+#endif
+#ifdef __NetBSD__
+#include <sys/bitops.h>	/* ilog2 */
+#endif
+#ifdef JEMALLOC_HAVE_VM_MAKE_TAG
+#define PAGES_FD_TAG VM_MAKE_TAG(101U)
+#else
+#define PAGES_FD_TAG -1
+#endif
+
+/******************************************************************************/
+/* Data. */
+
+/* Actual operating system page size, detected during bootstrap, <= PAGE. */
+static size_t	os_page;
+
+#ifndef _WIN32
+#  define PAGES_PROT_COMMIT (PROT_READ | PROT_WRITE)
+#  define PAGES_PROT_DECOMMIT (PROT_NONE)
+static int	mmap_flags;
+#endif
+static bool	os_overcommits;
+
+const char *thp_mode_names[] = {
+	"default",
+	"always",
+	"never",
+	"not supported"
+};
+thp_mode_t opt_thp = THP_MODE_DEFAULT;
+thp_mode_t init_system_thp_mode;
+
+/* Runtime support for lazy purge. Irrelevant when !pages_can_purge_lazy. */
+static bool pages_can_purge_lazy_runtime = true;
+
+#ifdef JEMALLOC_PURGE_MADVISE_DONTNEED_ZEROS
+static int madvise_dont_need_zeros_is_faulty = -1;
+/**
+ * Check that MADV_DONTNEED will actually zero pages on subsequent access.
+ *
+ * Since qemu does not support this, yet [1], and you can get very tricky
+ * assert if you will run program with jemalloc in use under qemu:
+ *
+ *     <jemalloc>: ../contrib/jemalloc/src/extent.c:1195: Failed assertion: "p[i] == 0"
+ *
+ *   [1]: https://patchwork.kernel.org/patch/10576637/
+ */
+static int madvise_MADV_DONTNEED_zeroes_pages()
+{
+	int works = -1;
+	size_t size = PAGE;
+
+	void * addr = mmap(NULL, size, PROT_READ|PROT_WRITE,
+	    MAP_PRIVATE|MAP_ANONYMOUS, -1, 0);
+
+	if (addr == MAP_FAILED) {
+		malloc_write("<jemalloc>: Cannot allocate memory for "
+		    "MADV_DONTNEED check\n");
+		if (opt_abort) {
+			abort();
+		}
+	}
+
+	memset(addr, 'A', size);
+	if (madvise(addr, size, MADV_DONTNEED) == 0) {
+		works = memchr(addr, 'A', size) == NULL;
+	} else {
+		/*
+		 * If madvise() does not support MADV_DONTNEED, then we can
+		 * call it anyway, and use it's return code.
+		 */
+		works = 1;
+	}
+
+	if (munmap(addr, size) != 0) {
+		malloc_write("<jemalloc>: Cannot deallocate memory for "
+		    "MADV_DONTNEED check\n");
+		if (opt_abort) {
+			abort();
+		}
+	}
+
+	return works;
+}
+#endif
+
+/******************************************************************************/
+/*
+ * Function prototypes for static functions that are referenced prior to
+ * definition.
+ */
+
+static void os_pages_unmap(void *addr, size_t size);
+
+/******************************************************************************/
+
+static void *
+os_pages_map(void *addr, size_t size, size_t alignment, bool *commit) {
+	assert(ALIGNMENT_ADDR2BASE(addr, os_page) == addr);
+	assert(ALIGNMENT_CEILING(size, os_page) == size);
+	assert(size != 0);
+
+	if (os_overcommits) {
+		*commit = true;
+	}
+
+	void *ret;
+#ifdef _WIN32
+	/*
+	 * If VirtualAlloc can't allocate at the given address when one is
+	 * given, it fails and returns NULL.
+	 */
+	ret = VirtualAlloc(addr, size, MEM_RESERVE | (*commit ? MEM_COMMIT : 0),
+	    PAGE_READWRITE);
+#else
+	/*
+	 * We don't use MAP_FIXED here, because it can cause the *replacement*
+	 * of existing mappings, and we only want to create new mappings.
+	 */
+	{
+#ifdef __NetBSD__
+		/*
+		 * On NetBSD PAGE for a platform is defined to the
+		 * maximum page size of all machine architectures
+		 * for that platform, so that we can use the same
+		 * binaries across all machine architectures.
+		 */
+		if (alignment > os_page || PAGE > os_page) {
+			unsigned int a = ilog2(MAX(alignment, PAGE));
+			mmap_flags |= MAP_ALIGNED(a);
+		}
+#endif
+		int prot = *commit ? PAGES_PROT_COMMIT : PAGES_PROT_DECOMMIT;
+
+		ret = mmap(addr, size, prot, mmap_flags, PAGES_FD_TAG, 0);
+	}
+	assert(ret != NULL);
+
+	if (ret == MAP_FAILED) {
+		ret = NULL;
+	} else if (addr != NULL && ret != addr) {
+		/*
+		 * We succeeded in mapping memory, but not in the right place.
+		 */
+		os_pages_unmap(ret, size);
+		ret = NULL;
+	}
+#endif
+	assert(ret == NULL || (addr == NULL && ret != addr) || (addr != NULL &&
+	    ret == addr));
+	return ret;
+}
+
+static void *
+os_pages_trim(void *addr, size_t alloc_size, size_t leadsize, size_t size,
+    bool *commit) {
+	void *ret = (void *)((uintptr_t)addr + leadsize);
+
+	assert(alloc_size >= leadsize + size);
+#ifdef _WIN32
+	os_pages_unmap(addr, alloc_size);
+	void *new_addr = os_pages_map(ret, size, PAGE, commit);
+	if (new_addr == ret) {
+		return ret;
+	}
+	if (new_addr != NULL) {
+		os_pages_unmap(new_addr, size);
+	}
+	return NULL;
+#else
+	size_t trailsize = alloc_size - leadsize - size;
+
+	if (leadsize != 0) {
+		os_pages_unmap(addr, leadsize);
+	}
+	if (trailsize != 0) {
+		os_pages_unmap((void *)((uintptr_t)ret + size), trailsize);
+	}
+	return ret;
+#endif
+}
+
+static void
+os_pages_unmap(void *addr, size_t size) {
+	assert(ALIGNMENT_ADDR2BASE(addr, os_page) == addr);
+	assert(ALIGNMENT_CEILING(size, os_page) == size);
+
+#ifdef _WIN32
+	if (VirtualFree(addr, 0, MEM_RELEASE) == 0)
+#else
+	if (munmap(addr, size) == -1)
+#endif
+	{
+		char buf[BUFERROR_BUF];
+
+		buferror(get_errno(), buf, sizeof(buf));
+		malloc_printf("<jemalloc>: Error in "
+#ifdef _WIN32
+		    "VirtualFree"
+#else
+		    "munmap"
+#endif
+		    "(): %s\n", buf);
+		if (opt_abort) {
+			abort();
+		}
+	}
+}
+
+static void *
+pages_map_slow(size_t size, size_t alignment, bool *commit) {
+	size_t alloc_size = size + alignment - os_page;
+	/* Beware size_t wrap-around. */
+	if (alloc_size < size) {
+		return NULL;
+	}
+
+	void *ret;
+	do {
+		void *pages = os_pages_map(NULL, alloc_size, alignment, commit);
+		if (pages == NULL) {
+			return NULL;
+		}
+		size_t leadsize = ALIGNMENT_CEILING((uintptr_t)pages, alignment)
+		    - (uintptr_t)pages;
+		ret = os_pages_trim(pages, alloc_size, leadsize, size, commit);
+	} while (ret == NULL);
+
+	assert(ret != NULL);
+	assert(PAGE_ADDR2BASE(ret) == ret);
+	return ret;
+}
+
+void *
+pages_map(void *addr, size_t size, size_t alignment, bool *commit) {
+	assert(alignment >= PAGE);
+	assert(ALIGNMENT_ADDR2BASE(addr, alignment) == addr);
+
+#if defined(__FreeBSD__) && defined(MAP_EXCL)
+	/*
+	 * FreeBSD has mechanisms both to mmap at specific address without
+	 * touching existing mappings, and to mmap with specific alignment.
+	 */
+	{
+		if (os_overcommits) {
+			*commit = true;
+		}
+
+		int prot = *commit ? PAGES_PROT_COMMIT : PAGES_PROT_DECOMMIT;
+		int flags = mmap_flags;
+
+		if (addr != NULL) {
+			flags |= MAP_FIXED | MAP_EXCL;
+		} else {
+			unsigned alignment_bits = ffs_zu(alignment);
+			assert(alignment_bits > 0);
+			flags |= MAP_ALIGNED(alignment_bits);
+		}
+
+		void *ret = mmap(addr, size, prot, flags, -1, 0);
+		if (ret == MAP_FAILED) {
+			ret = NULL;
+		}
+
+		return ret;
+	}
+#endif
+	/*
+	 * Ideally, there would be a way to specify alignment to mmap() (like
+	 * NetBSD has), but in the absence of such a feature, we have to work
+	 * hard to efficiently create aligned mappings.  The reliable, but
+	 * slow method is to create a mapping that is over-sized, then trim the
+	 * excess.  However, that always results in one or two calls to
+	 * os_pages_unmap(), and it can leave holes in the process's virtual
+	 * memory map if memory grows downward.
+	 *
+	 * Optimistically try mapping precisely the right amount before falling
+	 * back to the slow method, with the expectation that the optimistic
+	 * approach works most of the time.
+	 */
+
+	void *ret = os_pages_map(addr, size, os_page, commit);
+	if (ret == NULL || ret == addr) {
+		return ret;
+	}
+	assert(addr == NULL);
+	if (ALIGNMENT_ADDR2OFFSET(ret, alignment) != 0) {
+		os_pages_unmap(ret, size);
+		return pages_map_slow(size, alignment, commit);
+	}
+
+	assert(PAGE_ADDR2BASE(ret) == ret);
+	return ret;
+}
+
+void
+pages_unmap(void *addr, size_t size) {
+	assert(PAGE_ADDR2BASE(addr) == addr);
+	assert(PAGE_CEILING(size) == size);
+
+	os_pages_unmap(addr, size);
+}
+
+static bool
+os_pages_commit(void *addr, size_t size, bool commit) {
+	assert(PAGE_ADDR2BASE(addr) == addr);
+	assert(PAGE_CEILING(size) == size);
+
+#ifdef _WIN32
+	return (commit ? (addr != VirtualAlloc(addr, size, MEM_COMMIT,
+	    PAGE_READWRITE)) : (!VirtualFree(addr, size, MEM_DECOMMIT)));
+#else
+	{
+		int prot = commit ? PAGES_PROT_COMMIT : PAGES_PROT_DECOMMIT;
+		void *result = mmap(addr, size, prot, mmap_flags | MAP_FIXED,
+		    PAGES_FD_TAG, 0);
+		if (result == MAP_FAILED) {
+			return true;
+		}
+		if (result != addr) {
+			/*
+			 * We succeeded in mapping memory, but not in the right
+			 * place.
+			 */
+			os_pages_unmap(result, size);
+			return true;
+		}
+		return false;
+	}
+#endif
+}
+
+static bool
+pages_commit_impl(void *addr, size_t size, bool commit) {
+	if (os_overcommits) {
+		return true;
+	}
+
+	return os_pages_commit(addr, size, commit);
+}
+
+bool
+pages_commit(void *addr, size_t size) {
+	return pages_commit_impl(addr, size, true);
+}
+
+bool
+pages_decommit(void *addr, size_t size) {
+	return pages_commit_impl(addr, size, false);
+}
+
+void
+pages_mark_guards(void *head, void *tail) {
+	assert(head != NULL || tail != NULL);
+	assert(head == NULL || tail == NULL ||
+	    (uintptr_t)head < (uintptr_t)tail);
+#ifdef JEMALLOC_HAVE_MPROTECT
+	if (head != NULL) {
+		mprotect(head, PAGE, PROT_NONE);
+	}
+	if (tail != NULL) {
+		mprotect(tail, PAGE, PROT_NONE);
+	}
+#else
+	/* Decommit sets to PROT_NONE / MEM_DECOMMIT. */
+	if (head != NULL) {
+		os_pages_commit(head, PAGE, false);
+	}
+	if (tail != NULL) {
+		os_pages_commit(tail, PAGE, false);
+	}
+#endif
+}
+
+void
+pages_unmark_guards(void *head, void *tail) {
+	assert(head != NULL || tail != NULL);
+	assert(head == NULL || tail == NULL ||
+	    (uintptr_t)head < (uintptr_t)tail);
+#ifdef JEMALLOC_HAVE_MPROTECT
+	bool head_and_tail = (head != NULL) && (tail != NULL);
+	size_t range = head_and_tail ?
+	    (uintptr_t)tail - (uintptr_t)head + PAGE :
+	    SIZE_T_MAX;
+	/*
+	 * The amount of work that the kernel does in mprotect depends on the
+	 * range argument.  SC_LARGE_MINCLASS is an arbitrary threshold chosen
+	 * to prevent kernel from doing too much work that would outweigh the
+	 * savings of performing one less system call.
+	 */
+	bool ranged_mprotect = head_and_tail && range <= SC_LARGE_MINCLASS;
+	if (ranged_mprotect) {
+		mprotect(head, range, PROT_READ | PROT_WRITE);
+	} else {
+		if (head != NULL) {
+			mprotect(head, PAGE, PROT_READ | PROT_WRITE);
+		}
+		if (tail != NULL) {
+			mprotect(tail, PAGE, PROT_READ | PROT_WRITE);
+		}
+	}
+#else
+	if (head != NULL) {
+		os_pages_commit(head, PAGE, true);
+	}
+	if (tail != NULL) {
+		os_pages_commit(tail, PAGE, true);
+	}
+#endif
+}
+
+bool
+pages_purge_lazy(void *addr, size_t size) {
+	assert(ALIGNMENT_ADDR2BASE(addr, os_page) == addr);
+	assert(PAGE_CEILING(size) == size);
+
+	if (!pages_can_purge_lazy) {
+		return true;
+	}
+	if (!pages_can_purge_lazy_runtime) {
+		/*
+		 * Built with lazy purge enabled, but detected it was not
+		 * supported on the current system.
+		 */
+		return true;
+	}
+
+#ifdef _WIN32
+	VirtualAlloc(addr, size, MEM_RESET, PAGE_READWRITE);
+	return false;
+#elif defined(JEMALLOC_PURGE_MADVISE_FREE)
+	return (madvise(addr, size,
+#  ifdef MADV_FREE
+	    MADV_FREE
+#  else
+	    JEMALLOC_MADV_FREE
+#  endif
+	    ) != 0);
+#elif defined(JEMALLOC_PURGE_MADVISE_DONTNEED) && \
+    !defined(JEMALLOC_PURGE_MADVISE_DONTNEED_ZEROS)
+	return (madvise(addr, size, MADV_DONTNEED) != 0);
+#elif defined(JEMALLOC_PURGE_POSIX_MADVISE_DONTNEED) && \
+    !defined(JEMALLOC_PURGE_POSIX_MADVISE_DONTNEED_ZEROS)
+	return (posix_madvise(addr, size, POSIX_MADV_DONTNEED) != 0);
+#else
+	not_reached();
+#endif
+}
+
+bool
+pages_purge_forced(void *addr, size_t size) {
+	assert(PAGE_ADDR2BASE(addr) == addr);
+	assert(PAGE_CEILING(size) == size);
+
+	if (!pages_can_purge_forced) {
+		return true;
+	}
+
+#if defined(JEMALLOC_PURGE_MADVISE_DONTNEED) && \
+    defined(JEMALLOC_PURGE_MADVISE_DONTNEED_ZEROS)
+	return (unlikely(madvise_dont_need_zeros_is_faulty) ||
+	    madvise(addr, size, MADV_DONTNEED) != 0);
+#elif defined(JEMALLOC_PURGE_POSIX_MADVISE_DONTNEED) && \
+    defined(JEMALLOC_PURGE_POSIX_MADVISE_DONTNEED_ZEROS)
+	return (unlikely(madvise_dont_need_zeros_is_faulty) ||
+	    posix_madvise(addr, size, POSIX_MADV_DONTNEED) != 0);
+#elif defined(JEMALLOC_MAPS_COALESCE)
+	/* Try to overlay a new demand-zeroed mapping. */
+	return pages_commit(addr, size);
+#else
+	not_reached();
+#endif
+}
+
+static bool
+pages_huge_impl(void *addr, size_t size, bool aligned) {
+	if (aligned) {
+		assert(HUGEPAGE_ADDR2BASE(addr) == addr);
+		assert(HUGEPAGE_CEILING(size) == size);
+	}
+#if defined(JEMALLOC_HAVE_MADVISE_HUGE)
+	return (madvise(addr, size, MADV_HUGEPAGE) != 0);
+#elif defined(JEMALLOC_HAVE_MEMCNTL)
+	struct memcntl_mha m = {0};
+	m.mha_cmd = MHA_MAPSIZE_VA;
+	m.mha_pagesize = HUGEPAGE;
+	return (memcntl(addr, size, MC_HAT_ADVISE, (caddr_t)&m, 0, 0) == 0);
+#else
+	return true;
+#endif
+}
+
+bool
+pages_huge(void *addr, size_t size) {
+	return pages_huge_impl(addr, size, true);
+}
+
+static bool
+pages_huge_unaligned(void *addr, size_t size) {
+	return pages_huge_impl(addr, size, false);
+}
+
+static bool
+pages_nohuge_impl(void *addr, size_t size, bool aligned) {
+	if (aligned) {
+		assert(HUGEPAGE_ADDR2BASE(addr) == addr);
+		assert(HUGEPAGE_CEILING(size) == size);
+	}
+
+#ifdef JEMALLOC_HAVE_MADVISE_HUGE
+	return (madvise(addr, size, MADV_NOHUGEPAGE) != 0);
+#else
+	return false;
+#endif
+}
+
+bool
+pages_nohuge(void *addr, size_t size) {
+	return pages_nohuge_impl(addr, size, true);
+}
+
+static bool
+pages_nohuge_unaligned(void *addr, size_t size) {
+	return pages_nohuge_impl(addr, size, false);
+}
+
+bool
+pages_dontdump(void *addr, size_t size) {
+	assert(PAGE_ADDR2BASE(addr) == addr);
+	assert(PAGE_CEILING(size) == size);
+#if defined(JEMALLOC_MADVISE_DONTDUMP)
+	return madvise(addr, size, MADV_DONTDUMP) != 0;
+#elif defined(JEMALLOC_MADVISE_NOCORE)
+	return madvise(addr, size, MADV_NOCORE) != 0;
+#else
+	return false;
+#endif
+}
+
+bool
+pages_dodump(void *addr, size_t size) {
+	assert(PAGE_ADDR2BASE(addr) == addr);
+	assert(PAGE_CEILING(size) == size);
+#if defined(JEMALLOC_MADVISE_DONTDUMP)
+	return madvise(addr, size, MADV_DODUMP) != 0;
+#elif defined(JEMALLOC_MADVISE_NOCORE)
+	return madvise(addr, size, MADV_CORE) != 0;
+#else
+	return false;
+#endif
+}
+
+
+static size_t
+os_page_detect(void) {
+#ifdef _WIN32
+	SYSTEM_INFO si;
+	GetSystemInfo(&si);
+	return si.dwPageSize;
+#elif defined(__FreeBSD__)
+	/*
+	 * This returns the value obtained from
+	 * the auxv vector, avoiding a syscall.
+	 */
+	return getpagesize();
+#else
+	long result = sysconf(_SC_PAGESIZE);
+	if (result == -1) {
+		return LG_PAGE;
+	}
+	return (size_t)result;
+#endif
+}
+
+#ifdef JEMALLOC_SYSCTL_VM_OVERCOMMIT
+static bool
+os_overcommits_sysctl(void) {
+	int vm_overcommit;
+	size_t sz;
+
+	sz = sizeof(vm_overcommit);
+#if defined(__FreeBSD__) && defined(VM_OVERCOMMIT)
+	int mib[2];
+
+	mib[0] = CTL_VM;
+	mib[1] = VM_OVERCOMMIT;
+	if (sysctl(mib, 2, &vm_overcommit, &sz, NULL, 0) != 0) {
+		return false; /* Error. */
+	}
+#else
+	if (sysctlbyname("vm.overcommit", &vm_overcommit, &sz, NULL, 0) != 0) {
+		return false; /* Error. */
+	}
+#endif
+
+	return ((vm_overcommit & 0x3) == 0);
+}
+#endif
+
+#ifdef JEMALLOC_PROC_SYS_VM_OVERCOMMIT_MEMORY
+/*
+ * Use syscall(2) rather than {open,read,close}(2) when possible to avoid
+ * reentry during bootstrapping if another library has interposed system call
+ * wrappers.
+ */
+static bool
+os_overcommits_proc(void) {
+	int fd;
+	char buf[1];
+
+#if defined(JEMALLOC_USE_SYSCALL) && defined(SYS_open)
+	#if defined(O_CLOEXEC)
+		fd = (int)syscall(SYS_open, "/proc/sys/vm/overcommit_memory", O_RDONLY |
+			O_CLOEXEC);
+	#else
+		fd = (int)syscall(SYS_open, "/proc/sys/vm/overcommit_memory", O_RDONLY);
+		if (fd != -1) {
+			fcntl(fd, F_SETFD, fcntl(fd, F_GETFD) | FD_CLOEXEC);
+		}
+	#endif
+#elif defined(JEMALLOC_USE_SYSCALL) && defined(SYS_openat)
+	#if defined(O_CLOEXEC)
+		fd = (int)syscall(SYS_openat,
+			AT_FDCWD, "/proc/sys/vm/overcommit_memory", O_RDONLY | O_CLOEXEC);
+	#else
+		fd = (int)syscall(SYS_openat,
+			AT_FDCWD, "/proc/sys/vm/overcommit_memory", O_RDONLY);
+		if (fd != -1) {
+			fcntl(fd, F_SETFD, fcntl(fd, F_GETFD) | FD_CLOEXEC);
+		}
+	#endif
+#else
+	#if defined(O_CLOEXEC)
+		fd = open("/proc/sys/vm/overcommit_memory", O_RDONLY | O_CLOEXEC);
+	#else
+		fd = open("/proc/sys/vm/overcommit_memory", O_RDONLY);
+		if (fd != -1) {
+			fcntl(fd, F_SETFD, fcntl(fd, F_GETFD) | FD_CLOEXEC);
+		}
+	#endif
+#endif
+
+	if (fd == -1) {
+		return false; /* Error. */
+	}
+
+	ssize_t nread = malloc_read_fd(fd, &buf, sizeof(buf));
+#if defined(JEMALLOC_USE_SYSCALL) && defined(SYS_close)
+	syscall(SYS_close, fd);
+#else
+	close(fd);
+#endif
+
+	if (nread < 1) {
+		return false; /* Error. */
+	}
+	/*
+	 * /proc/sys/vm/overcommit_memory meanings:
+	 * 0: Heuristic overcommit.
+	 * 1: Always overcommit.
+	 * 2: Never overcommit.
+	 */
+	return (buf[0] == '0' || buf[0] == '1');
+}
+#endif
+
+void
+pages_set_thp_state (void *ptr, size_t size) {
+	if (opt_thp == thp_mode_default || opt_thp == init_system_thp_mode) {
+		return;
+	}
+	assert(opt_thp != thp_mode_not_supported &&
+	    init_system_thp_mode != thp_mode_not_supported);
+
+	if (opt_thp == thp_mode_always
+	    && init_system_thp_mode != thp_mode_never) {
+		assert(init_system_thp_mode == thp_mode_default);
+		pages_huge_unaligned(ptr, size);
+	} else if (opt_thp == thp_mode_never) {
+		assert(init_system_thp_mode == thp_mode_default ||
+		    init_system_thp_mode == thp_mode_always);
+		pages_nohuge_unaligned(ptr, size);
+	}
+}
+
+static void
+init_thp_state(void) {
+	if (!have_madvise_huge && !have_memcntl) {
+		if (metadata_thp_enabled() && opt_abort) {
+			malloc_write("<jemalloc>: no MADV_HUGEPAGE support\n");
+			abort();
+		}
+		goto label_error;
+	}
+#if defined(JEMALLOC_HAVE_MADVISE_HUGE)
+	static const char sys_state_madvise[] = "always [madvise] never\n";
+	static const char sys_state_always[] = "[always] madvise never\n";
+	static const char sys_state_never[] = "always madvise [never]\n";
+	char buf[sizeof(sys_state_madvise)];
+
+#if defined(JEMALLOC_USE_SYSCALL) && defined(SYS_open)
+	int fd = (int)syscall(SYS_open,
+	    "/sys/kernel/mm/transparent_hugepage/enabled", O_RDONLY);
+#elif defined(JEMALLOC_USE_SYSCALL) && defined(SYS_openat)
+	int fd = (int)syscall(SYS_openat,
+		    AT_FDCWD, "/sys/kernel/mm/transparent_hugepage/enabled", O_RDONLY);
+#else
+	int fd = open("/sys/kernel/mm/transparent_hugepage/enabled", O_RDONLY);
+#endif
+	if (fd == -1) {
+		goto label_error;
+	}
+
+	ssize_t nread = malloc_read_fd(fd, &buf, sizeof(buf));
+#if defined(JEMALLOC_USE_SYSCALL) && defined(SYS_close)
+	syscall(SYS_close, fd);
+#else
+	close(fd);
+#endif
+
+        if (nread < 0) {
+		goto label_error;
+        }
+
+	if (strncmp(buf, sys_state_madvise, (size_t)nread) == 0) {
+		init_system_thp_mode = thp_mode_default;
+	} else if (strncmp(buf, sys_state_always, (size_t)nread) == 0) {
+		init_system_thp_mode = thp_mode_always;
+	} else if (strncmp(buf, sys_state_never, (size_t)nread) == 0) {
+		init_system_thp_mode = thp_mode_never;
+	} else {
+		goto label_error;
+	}
+	return;
+#elif defined(JEMALLOC_HAVE_MEMCNTL)
+	init_system_thp_mode = thp_mode_default;
+	return;
+#endif
+label_error:
+	opt_thp = init_system_thp_mode = thp_mode_not_supported;
+}
+
+bool
+pages_boot(void) {
+	os_page = os_page_detect();
+	if (os_page > PAGE) {
+		malloc_write("<jemalloc>: Unsupported system page size\n");
+		if (opt_abort) {
+			abort();
+		}
+		return true;
+	}
+
+#ifdef JEMALLOC_PURGE_MADVISE_DONTNEED_ZEROS
+	if (!opt_trust_madvise) {
+		madvise_dont_need_zeros_is_faulty = !madvise_MADV_DONTNEED_zeroes_pages();
+		if (madvise_dont_need_zeros_is_faulty) {
+			malloc_write("<jemalloc>: MADV_DONTNEED does not work (memset will be used instead)\n");
+			malloc_write("<jemalloc>: (This is the expected behaviour if you are running under QEMU)\n");
+		}
+	} else {
+		/* In case opt_trust_madvise is disable,
+		 * do not do runtime check */
+		madvise_dont_need_zeros_is_faulty = 0;
+	}
+#endif
+
+#ifndef _WIN32
+	mmap_flags = MAP_PRIVATE | MAP_ANON;
+#endif
+
+#ifdef JEMALLOC_SYSCTL_VM_OVERCOMMIT
+	os_overcommits = os_overcommits_sysctl();
+#elif defined(JEMALLOC_PROC_SYS_VM_OVERCOMMIT_MEMORY)
+	os_overcommits = os_overcommits_proc();
+#  ifdef MAP_NORESERVE
+	if (os_overcommits) {
+		mmap_flags |= MAP_NORESERVE;
+	}
+#  endif
+#elif defined(__NetBSD__)
+	os_overcommits = true;
+#else
+	os_overcommits = false;
+#endif
+
+	init_thp_state();
+
+#ifdef __FreeBSD__
+	/*
+	 * FreeBSD doesn't need the check; madvise(2) is known to work.
+	 */
+#else
+	/* Detect lazy purge runtime support. */
+	if (pages_can_purge_lazy) {
+		bool committed = false;
+		void *madv_free_page = os_pages_map(NULL, PAGE, PAGE, &committed);
+		if (madv_free_page == NULL) {
+			return true;
+		}
+		assert(pages_can_purge_lazy_runtime);
+		if (pages_purge_lazy(madv_free_page, PAGE)) {
+			pages_can_purge_lazy_runtime = false;
+		}
+		os_pages_unmap(madv_free_page, PAGE);
+	}
+#endif
+
+	return false;
+}
diff --git a/deps/jemalloc/src/pai.c b/deps/jemalloc/src/pai.c
new file mode 100644
index 0000000..45c8772
--- /dev/null
+++ b/deps/jemalloc/src/pai.c
@@ -0,0 +1,31 @@
+#include "jemalloc/internal/jemalloc_preamble.h"
+#include "jemalloc/internal/jemalloc_internal_includes.h"
+
+size_t
+pai_alloc_batch_default(tsdn_t *tsdn, pai_t *self, size_t size, size_t nallocs,
+    edata_list_active_t *results, bool *deferred_work_generated) {
+	for (size_t i = 0; i < nallocs; i++) {
+		bool deferred_by_alloc = false;
+		edata_t *edata = pai_alloc(tsdn, self, size, PAGE,
+		    /* zero */ false, /* guarded */ false,
+		    /* frequent_reuse */ false, &deferred_by_alloc);
+		*deferred_work_generated |= deferred_by_alloc;
+		if (edata == NULL) {
+			return i;
+		}
+		edata_list_active_append(results, edata);
+	}
+	return nallocs;
+}
+
+void
+pai_dalloc_batch_default(tsdn_t *tsdn, pai_t *self,
+    edata_list_active_t *list, bool *deferred_work_generated) {
+	edata_t *edata;
+	while ((edata = edata_list_active_first(list)) != NULL) {
+		bool deferred_by_dalloc = false;
+		edata_list_active_remove(list, edata);
+		pai_dalloc(tsdn, self, edata, &deferred_by_dalloc);
+		*deferred_work_generated |= deferred_by_dalloc;
+	}
+}
diff --git a/deps/jemalloc/src/peak_event.c b/deps/jemalloc/src/peak_event.c
new file mode 100644
index 0000000..4093fbc
--- /dev/null
+++ b/deps/jemalloc/src/peak_event.c
@@ -0,0 +1,82 @@
+#include "jemalloc/internal/jemalloc_preamble.h"
+#include "jemalloc/internal/jemalloc_internal_includes.h"
+
+#include "jemalloc/internal/peak_event.h"
+
+#include "jemalloc/internal/activity_callback.h"
+#include "jemalloc/internal/peak.h"
+
+/*
+ * Update every 64K by default.  We're not exposing this as a configuration
+ * option for now; we don't want to bind ourselves too tightly to any particular
+ * performance requirements for small values, or guarantee that we'll even be
+ * able to provide fine-grained accuracy.
+ */
+#define PEAK_EVENT_WAIT (64 * 1024)
+
+/* Update the peak with current tsd state. */
+void
+peak_event_update(tsd_t *tsd) {
+	uint64_t alloc = tsd_thread_allocated_get(tsd);
+	uint64_t dalloc = tsd_thread_deallocated_get(tsd);
+	peak_t *peak = tsd_peakp_get(tsd);
+	peak_update(peak, alloc, dalloc);
+}
+
+static void
+peak_event_activity_callback(tsd_t *tsd) {
+	activity_callback_thunk_t *thunk = tsd_activity_callback_thunkp_get(
+	    tsd);
+	uint64_t alloc = tsd_thread_allocated_get(tsd);
+	uint64_t dalloc = tsd_thread_deallocated_get(tsd);
+	if (thunk->callback != NULL) {
+		thunk->callback(thunk->uctx, alloc, dalloc);
+	}
+}
+
+/* Set current state to zero. */
+void
+peak_event_zero(tsd_t *tsd) {
+	uint64_t alloc = tsd_thread_allocated_get(tsd);
+	uint64_t dalloc = tsd_thread_deallocated_get(tsd);
+	peak_t *peak = tsd_peakp_get(tsd);
+	peak_set_zero(peak, alloc, dalloc);
+}
+
+uint64_t
+peak_event_max(tsd_t *tsd) {
+	peak_t *peak = tsd_peakp_get(tsd);
+	return peak_max(peak);
+}
+
+uint64_t
+peak_alloc_new_event_wait(tsd_t *tsd) {
+	return PEAK_EVENT_WAIT;
+}
+
+uint64_t
+peak_alloc_postponed_event_wait(tsd_t *tsd) {
+	return TE_MIN_START_WAIT;
+}
+
+void
+peak_alloc_event_handler(tsd_t *tsd, uint64_t elapsed) {
+	peak_event_update(tsd);
+	peak_event_activity_callback(tsd);
+}
+
+uint64_t
+peak_dalloc_new_event_wait(tsd_t *tsd) {
+	return PEAK_EVENT_WAIT;
+}
+
+uint64_t
+peak_dalloc_postponed_event_wait(tsd_t *tsd) {
+	return TE_MIN_START_WAIT;
+}
+
+void
+peak_dalloc_event_handler(tsd_t *tsd, uint64_t elapsed) {
+	peak_event_update(tsd);
+	peak_event_activity_callback(tsd);
+}
diff --git a/deps/jemalloc/src/prof.c b/deps/jemalloc/src/prof.c
new file mode 100644
index 0000000..7a6d5d5
--- /dev/null
+++ b/deps/jemalloc/src/prof.c
@@ -0,0 +1,789 @@
+#include "jemalloc/internal/jemalloc_preamble.h"
+#include "jemalloc/internal/jemalloc_internal_includes.h"
+
+#include "jemalloc/internal/ctl.h"
+#include "jemalloc/internal/assert.h"
+#include "jemalloc/internal/mutex.h"
+#include "jemalloc/internal/counter.h"
+#include "jemalloc/internal/prof_data.h"
+#include "jemalloc/internal/prof_log.h"
+#include "jemalloc/internal/prof_recent.h"
+#include "jemalloc/internal/prof_stats.h"
+#include "jemalloc/internal/prof_sys.h"
+#include "jemalloc/internal/prof_hook.h"
+#include "jemalloc/internal/thread_event.h"
+
+/*
+ * This file implements the profiling "APIs" needed by other parts of jemalloc,
+ * and also manages the relevant "operational" data, mainly options and mutexes;
+ * the core profiling data structures are encapsulated in prof_data.c.
+ */
+
+/******************************************************************************/
+
+/* Data. */
+
+bool opt_prof = false;
+bool opt_prof_active = true;
+bool opt_prof_thread_active_init = true;
+size_t opt_lg_prof_sample = LG_PROF_SAMPLE_DEFAULT;
+ssize_t opt_lg_prof_interval = LG_PROF_INTERVAL_DEFAULT;
+bool opt_prof_gdump = false;
+bool opt_prof_final = false;
+bool opt_prof_leak = false;
+bool opt_prof_leak_error = false;
+bool opt_prof_accum = false;
+char opt_prof_prefix[PROF_DUMP_FILENAME_LEN];
+bool opt_prof_sys_thread_name = false;
+bool opt_prof_unbias = true;
+
+/* Accessed via prof_sample_event_handler(). */
+static counter_accum_t prof_idump_accumulated;
+
+/*
+ * Initialized as opt_prof_active, and accessed via
+ * prof_active_[gs]et{_unlocked,}().
+ */
+bool prof_active_state;
+static malloc_mutex_t prof_active_mtx;
+
+/*
+ * Initialized as opt_prof_thread_active_init, and accessed via
+ * prof_thread_active_init_[gs]et().
+ */
+static bool prof_thread_active_init;
+static malloc_mutex_t prof_thread_active_init_mtx;
+
+/*
+ * Initialized as opt_prof_gdump, and accessed via
+ * prof_gdump_[gs]et{_unlocked,}().
+ */
+bool prof_gdump_val;
+static malloc_mutex_t prof_gdump_mtx;
+
+uint64_t prof_interval = 0;
+
+size_t lg_prof_sample;
+
+static uint64_t next_thr_uid;
+static malloc_mutex_t next_thr_uid_mtx;
+
+/* Do not dump any profiles until bootstrapping is complete. */
+bool prof_booted = false;
+
+/* Logically a prof_backtrace_hook_t. */
+atomic_p_t prof_backtrace_hook;
+
+/* Logically a prof_dump_hook_t. */
+atomic_p_t prof_dump_hook;
+
+/******************************************************************************/
+
+void
+prof_alloc_rollback(tsd_t *tsd, prof_tctx_t *tctx) {
+	cassert(config_prof);
+
+	if (tsd_reentrancy_level_get(tsd) > 0) {
+		assert((uintptr_t)tctx == (uintptr_t)1U);
+		return;
+	}
+
+	if ((uintptr_t)tctx > (uintptr_t)1U) {
+		malloc_mutex_lock(tsd_tsdn(tsd), tctx->tdata->lock);
+		tctx->prepared = false;
+		prof_tctx_try_destroy(tsd, tctx);
+	}
+}
+
+void
+prof_malloc_sample_object(tsd_t *tsd, const void *ptr, size_t size,
+    size_t usize, prof_tctx_t *tctx) {
+	cassert(config_prof);
+
+	if (opt_prof_sys_thread_name) {
+		prof_sys_thread_name_fetch(tsd);
+	}
+
+	edata_t *edata = emap_edata_lookup(tsd_tsdn(tsd), &arena_emap_global,
+	    ptr);
+	prof_info_set(tsd, edata, tctx, size);
+
+	szind_t szind = sz_size2index(usize);
+
+	malloc_mutex_lock(tsd_tsdn(tsd), tctx->tdata->lock);
+	/*
+	 * We need to do these map lookups while holding the lock, to avoid the
+	 * possibility of races with prof_reset calls, which update the map and
+	 * then acquire the lock.  This actually still leaves a data race on the
+	 * contents of the unbias map, but we have not yet gone through and
+	 * atomic-ified the prof module, and compilers are not yet causing us
+	 * issues.  The key thing is to make sure that, if we read garbage data,
+	 * the prof_reset call is about to mark our tctx as expired before any
+	 * dumping of our corrupted output is attempted.
+	 */
+	size_t shifted_unbiased_cnt = prof_shifted_unbiased_cnt[szind];
+	size_t unbiased_bytes = prof_unbiased_sz[szind];
+	tctx->cnts.curobjs++;
+	tctx->cnts.curobjs_shifted_unbiased += shifted_unbiased_cnt;
+	tctx->cnts.curbytes += usize;
+	tctx->cnts.curbytes_unbiased += unbiased_bytes;
+	if (opt_prof_accum) {
+		tctx->cnts.accumobjs++;
+		tctx->cnts.accumobjs_shifted_unbiased += shifted_unbiased_cnt;
+		tctx->cnts.accumbytes += usize;
+		tctx->cnts.accumbytes_unbiased += unbiased_bytes;
+	}
+	bool record_recent = prof_recent_alloc_prepare(tsd, tctx);
+	tctx->prepared = false;
+	malloc_mutex_unlock(tsd_tsdn(tsd), tctx->tdata->lock);
+	if (record_recent) {
+		assert(tctx == edata_prof_tctx_get(edata));
+		prof_recent_alloc(tsd, edata, size, usize);
+	}
+
+	if (opt_prof_stats) {
+		prof_stats_inc(tsd, szind, size);
+	}
+}
+
+void
+prof_free_sampled_object(tsd_t *tsd, size_t usize, prof_info_t *prof_info) {
+	cassert(config_prof);
+
+	assert(prof_info != NULL);
+	prof_tctx_t *tctx = prof_info->alloc_tctx;
+	assert((uintptr_t)tctx > (uintptr_t)1U);
+
+	szind_t szind = sz_size2index(usize);
+	malloc_mutex_lock(tsd_tsdn(tsd), tctx->tdata->lock);
+
+	assert(tctx->cnts.curobjs > 0);
+	assert(tctx->cnts.curbytes >= usize);
+	/*
+	 * It's not correct to do equivalent asserts for unbiased bytes, because
+	 * of the potential for races with prof.reset calls.  The map contents
+	 * should really be atomic, but we have not atomic-ified the prof module
+	 * yet.
+	 */
+	tctx->cnts.curobjs--;
+	tctx->cnts.curobjs_shifted_unbiased -= prof_shifted_unbiased_cnt[szind];
+	tctx->cnts.curbytes -= usize;
+	tctx->cnts.curbytes_unbiased -= prof_unbiased_sz[szind];
+
+	prof_try_log(tsd, usize, prof_info);
+
+	prof_tctx_try_destroy(tsd, tctx);
+
+	if (opt_prof_stats) {
+		prof_stats_dec(tsd, szind, prof_info->alloc_size);
+	}
+}
+
+prof_tctx_t *
+prof_tctx_create(tsd_t *tsd) {
+	if (!tsd_nominal(tsd) || tsd_reentrancy_level_get(tsd) > 0) {
+		return NULL;
+	}
+
+	prof_tdata_t *tdata = prof_tdata_get(tsd, true);
+	if (tdata == NULL) {
+		return NULL;
+	}
+
+	prof_bt_t bt;
+	bt_init(&bt, tdata->vec);
+	prof_backtrace(tsd, &bt);
+	return prof_lookup(tsd, &bt);
+}
+
+/*
+ * The bodies of this function and prof_leakcheck() are compiled out unless heap
+ * profiling is enabled, so that it is possible to compile jemalloc with
+ * floating point support completely disabled.  Avoiding floating point code is
+ * important on memory-constrained systems, but it also enables a workaround for
+ * versions of glibc that don't properly save/restore floating point registers
+ * during dynamic lazy symbol loading (which internally calls into whatever
+ * malloc implementation happens to be integrated into the application).  Note
+ * that some compilers (e.g.  gcc 4.8) may use floating point registers for fast
+ * memory moves, so jemalloc must be compiled with such optimizations disabled
+ * (e.g.
+ * -mno-sse) in order for the workaround to be complete.
+ */
+uint64_t
+prof_sample_new_event_wait(tsd_t *tsd) {
+#ifdef JEMALLOC_PROF
+	if (lg_prof_sample == 0) {
+		return TE_MIN_START_WAIT;
+	}
+
+	/*
+	 * Compute sample interval as a geometrically distributed random
+	 * variable with mean (2^lg_prof_sample).
+	 *
+	 *                      __        __
+	 *                      |  log(u)  |                     1
+	 * bytes_until_sample = | -------- |, where p = ---------------
+	 *                      | log(1-p) |             lg_prof_sample
+	 *                                              2
+	 *
+	 * For more information on the math, see:
+	 *
+	 *   Non-Uniform Random Variate Generation
+	 *   Luc Devroye
+	 *   Springer-Verlag, New York, 1986
+	 *   pp 500
+	 *   (http://luc.devroye.org/rnbookindex.html)
+	 *
+	 * In the actual computation, there's a non-zero probability that our
+	 * pseudo random number generator generates an exact 0, and to avoid
+	 * log(0), we set u to 1.0 in case r is 0.  Therefore u effectively is
+	 * uniformly distributed in (0, 1] instead of [0, 1).  Further, rather
+	 * than taking the ceiling, we take the floor and then add 1, since
+	 * otherwise bytes_until_sample would be 0 if u is exactly 1.0.
+	 */
+	uint64_t r = prng_lg_range_u64(tsd_prng_statep_get(tsd), 53);
+	double u = (r == 0U) ? 1.0 : (double)r * (1.0/9007199254740992.0L);
+	return (uint64_t)(log(u) /
+	    log(1.0 - (1.0 / (double)((uint64_t)1U << lg_prof_sample))))
+	    + (uint64_t)1U;
+#else
+	not_reached();
+	return TE_MAX_START_WAIT;
+#endif
+}
+
+uint64_t
+prof_sample_postponed_event_wait(tsd_t *tsd) {
+	/*
+	 * The postponed wait time for prof sample event is computed as if we
+	 * want a new wait time (i.e. as if the event were triggered).  If we
+	 * instead postpone to the immediate next allocation, like how we're
+	 * handling the other events, then we can have sampling bias, if e.g.
+	 * the allocation immediately following a reentrancy always comes from
+	 * the same stack trace.
+	 */
+	return prof_sample_new_event_wait(tsd);
+}
+
+void
+prof_sample_event_handler(tsd_t *tsd, uint64_t elapsed) {
+	cassert(config_prof);
+	assert(elapsed > 0 && elapsed != TE_INVALID_ELAPSED);
+	if (prof_interval == 0 || !prof_active_get_unlocked()) {
+		return;
+	}
+	if (counter_accum(tsd_tsdn(tsd), &prof_idump_accumulated, elapsed)) {
+		prof_idump(tsd_tsdn(tsd));
+	}
+}
+
+static void
+prof_fdump(void) {
+	tsd_t *tsd;
+
+	cassert(config_prof);
+	assert(opt_prof_final);
+
+	if (!prof_booted) {
+		return;
+	}
+	tsd = tsd_fetch();
+	assert(tsd_reentrancy_level_get(tsd) == 0);
+
+	prof_fdump_impl(tsd);
+}
+
+static bool
+prof_idump_accum_init(void) {
+	cassert(config_prof);
+
+	return counter_accum_init(&prof_idump_accumulated, prof_interval);
+}
+
+void
+prof_idump(tsdn_t *tsdn) {
+	tsd_t *tsd;
+	prof_tdata_t *tdata;
+
+	cassert(config_prof);
+
+	if (!prof_booted || tsdn_null(tsdn) || !prof_active_get_unlocked()) {
+		return;
+	}
+	tsd = tsdn_tsd(tsdn);
+	if (tsd_reentrancy_level_get(tsd) > 0) {
+		return;
+	}
+
+	tdata = prof_tdata_get(tsd, true);
+	if (tdata == NULL) {
+		return;
+	}
+	if (tdata->enq) {
+		tdata->enq_idump = true;
+		return;
+	}
+
+	prof_idump_impl(tsd);
+}
+
+bool
+prof_mdump(tsd_t *tsd, const char *filename) {
+	cassert(config_prof);
+	assert(tsd_reentrancy_level_get(tsd) == 0);
+
+	if (!opt_prof || !prof_booted) {
+		return true;
+	}
+
+	return prof_mdump_impl(tsd, filename);
+}
+
+void
+prof_gdump(tsdn_t *tsdn) {
+	tsd_t *tsd;
+	prof_tdata_t *tdata;
+
+	cassert(config_prof);
+
+	if (!prof_booted || tsdn_null(tsdn) || !prof_active_get_unlocked()) {
+		return;
+	}
+	tsd = tsdn_tsd(tsdn);
+	if (tsd_reentrancy_level_get(tsd) > 0) {
+		return;
+	}
+
+	tdata = prof_tdata_get(tsd, false);
+	if (tdata == NULL) {
+		return;
+	}
+	if (tdata->enq) {
+		tdata->enq_gdump = true;
+		return;
+	}
+
+	prof_gdump_impl(tsd);
+}
+
+static uint64_t
+prof_thr_uid_alloc(tsdn_t *tsdn) {
+	uint64_t thr_uid;
+
+	malloc_mutex_lock(tsdn, &next_thr_uid_mtx);
+	thr_uid = next_thr_uid;
+	next_thr_uid++;
+	malloc_mutex_unlock(tsdn, &next_thr_uid_mtx);
+
+	return thr_uid;
+}
+
+prof_tdata_t *
+prof_tdata_init(tsd_t *tsd) {
+	return prof_tdata_init_impl(tsd, prof_thr_uid_alloc(tsd_tsdn(tsd)), 0,
+	    NULL, prof_thread_active_init_get(tsd_tsdn(tsd)));
+}
+
+prof_tdata_t *
+prof_tdata_reinit(tsd_t *tsd, prof_tdata_t *tdata) {
+	uint64_t thr_uid = tdata->thr_uid;
+	uint64_t thr_discrim = tdata->thr_discrim + 1;
+	char *thread_name = (tdata->thread_name != NULL) ?
+	    prof_thread_name_alloc(tsd, tdata->thread_name) : NULL;
+	bool active = tdata->active;
+
+	prof_tdata_detach(tsd, tdata);
+	return prof_tdata_init_impl(tsd, thr_uid, thr_discrim, thread_name,
+	    active);
+}
+
+void
+prof_tdata_cleanup(tsd_t *tsd) {
+	prof_tdata_t *tdata;
+
+	if (!config_prof) {
+		return;
+	}
+
+	tdata = tsd_prof_tdata_get(tsd);
+	if (tdata != NULL) {
+		prof_tdata_detach(tsd, tdata);
+	}
+}
+
+bool
+prof_active_get(tsdn_t *tsdn) {
+	bool prof_active_current;
+
+	prof_active_assert();
+	malloc_mutex_lock(tsdn, &prof_active_mtx);
+	prof_active_current = prof_active_state;
+	malloc_mutex_unlock(tsdn, &prof_active_mtx);
+	return prof_active_current;
+}
+
+bool
+prof_active_set(tsdn_t *tsdn, bool active) {
+	bool prof_active_old;
+
+	prof_active_assert();
+	malloc_mutex_lock(tsdn, &prof_active_mtx);
+	prof_active_old = prof_active_state;
+	prof_active_state = active;
+	malloc_mutex_unlock(tsdn, &prof_active_mtx);
+	prof_active_assert();
+	return prof_active_old;
+}
+
+const char *
+prof_thread_name_get(tsd_t *tsd) {
+	assert(tsd_reentrancy_level_get(tsd) == 0);
+
+	prof_tdata_t *tdata;
+
+	tdata = prof_tdata_get(tsd, true);
+	if (tdata == NULL) {
+		return "";
+	}
+	return (tdata->thread_name != NULL ? tdata->thread_name : "");
+}
+
+int
+prof_thread_name_set(tsd_t *tsd, const char *thread_name) {
+	if (opt_prof_sys_thread_name) {
+		return ENOENT;
+	} else {
+		return prof_thread_name_set_impl(tsd, thread_name);
+	}
+}
+
+bool
+prof_thread_active_get(tsd_t *tsd) {
+	assert(tsd_reentrancy_level_get(tsd) == 0);
+
+	prof_tdata_t *tdata;
+
+	tdata = prof_tdata_get(tsd, true);
+	if (tdata == NULL) {
+		return false;
+	}
+	return tdata->active;
+}
+
+bool
+prof_thread_active_set(tsd_t *tsd, bool active) {
+	assert(tsd_reentrancy_level_get(tsd) == 0);
+
+	prof_tdata_t *tdata;
+
+	tdata = prof_tdata_get(tsd, true);
+	if (tdata == NULL) {
+		return true;
+	}
+	tdata->active = active;
+	return false;
+}
+
+bool
+prof_thread_active_init_get(tsdn_t *tsdn) {
+	bool active_init;
+
+	malloc_mutex_lock(tsdn, &prof_thread_active_init_mtx);
+	active_init = prof_thread_active_init;
+	malloc_mutex_unlock(tsdn, &prof_thread_active_init_mtx);
+	return active_init;
+}
+
+bool
+prof_thread_active_init_set(tsdn_t *tsdn, bool active_init) {
+	bool active_init_old;
+
+	malloc_mutex_lock(tsdn, &prof_thread_active_init_mtx);
+	active_init_old = prof_thread_active_init;
+	prof_thread_active_init = active_init;
+	malloc_mutex_unlock(tsdn, &prof_thread_active_init_mtx);
+	return active_init_old;
+}
+
+bool
+prof_gdump_get(tsdn_t *tsdn) {
+	bool prof_gdump_current;
+
+	malloc_mutex_lock(tsdn, &prof_gdump_mtx);
+	prof_gdump_current = prof_gdump_val;
+	malloc_mutex_unlock(tsdn, &prof_gdump_mtx);
+	return prof_gdump_current;
+}
+
+bool
+prof_gdump_set(tsdn_t *tsdn, bool gdump) {
+	bool prof_gdump_old;
+
+	malloc_mutex_lock(tsdn, &prof_gdump_mtx);
+	prof_gdump_old = prof_gdump_val;
+	prof_gdump_val = gdump;
+	malloc_mutex_unlock(tsdn, &prof_gdump_mtx);
+	return prof_gdump_old;
+}
+
+void
+prof_backtrace_hook_set(prof_backtrace_hook_t hook) {
+	atomic_store_p(&prof_backtrace_hook, hook, ATOMIC_RELEASE);
+}
+
+prof_backtrace_hook_t
+prof_backtrace_hook_get() {
+	return (prof_backtrace_hook_t)atomic_load_p(&prof_backtrace_hook,
+	    ATOMIC_ACQUIRE);
+}
+
+void
+prof_dump_hook_set(prof_dump_hook_t hook) {
+	atomic_store_p(&prof_dump_hook, hook, ATOMIC_RELEASE);
+}
+
+prof_dump_hook_t
+prof_dump_hook_get() {
+	return (prof_dump_hook_t)atomic_load_p(&prof_dump_hook,
+	    ATOMIC_ACQUIRE);
+}
+
+void
+prof_boot0(void) {
+	cassert(config_prof);
+
+	memcpy(opt_prof_prefix, PROF_PREFIX_DEFAULT,
+	    sizeof(PROF_PREFIX_DEFAULT));
+}
+
+void
+prof_boot1(void) {
+	cassert(config_prof);
+
+	/*
+	 * opt_prof must be in its final state before any arenas are
+	 * initialized, so this function must be executed early.
+	 */
+	if (opt_prof_leak_error && !opt_prof_leak) {
+		opt_prof_leak = true;
+	}
+
+	if (opt_prof_leak && !opt_prof) {
+		/*
+		 * Enable opt_prof, but in such a way that profiles are never
+		 * automatically dumped.
+		 */
+		opt_prof = true;
+		opt_prof_gdump = false;
+	} else if (opt_prof) {
+		if (opt_lg_prof_interval >= 0) {
+			prof_interval = (((uint64_t)1U) <<
+			    opt_lg_prof_interval);
+		}
+	}
+}
+
+bool
+prof_boot2(tsd_t *tsd, base_t *base) {
+	cassert(config_prof);
+
+	/*
+	 * Initialize the global mutexes unconditionally to maintain correct
+	 * stats when opt_prof is false.
+	 */
+	if (malloc_mutex_init(&prof_active_mtx, "prof_active",
+	    WITNESS_RANK_PROF_ACTIVE, malloc_mutex_rank_exclusive)) {
+		return true;
+	}
+	if (malloc_mutex_init(&prof_gdump_mtx, "prof_gdump",
+	    WITNESS_RANK_PROF_GDUMP, malloc_mutex_rank_exclusive)) {
+		return true;
+	}
+	if (malloc_mutex_init(&prof_thread_active_init_mtx,
+	    "prof_thread_active_init", WITNESS_RANK_PROF_THREAD_ACTIVE_INIT,
+	    malloc_mutex_rank_exclusive)) {
+		return true;
+	}
+	if (malloc_mutex_init(&bt2gctx_mtx, "prof_bt2gctx",
+	    WITNESS_RANK_PROF_BT2GCTX, malloc_mutex_rank_exclusive)) {
+		return true;
+	}
+	if (malloc_mutex_init(&tdatas_mtx, "prof_tdatas",
+	    WITNESS_RANK_PROF_TDATAS, malloc_mutex_rank_exclusive)) {
+		return true;
+	}
+	if (malloc_mutex_init(&next_thr_uid_mtx, "prof_next_thr_uid",
+	    WITNESS_RANK_PROF_NEXT_THR_UID, malloc_mutex_rank_exclusive)) {
+		return true;
+	}
+	if (malloc_mutex_init(&prof_stats_mtx, "prof_stats",
+	    WITNESS_RANK_PROF_STATS, malloc_mutex_rank_exclusive)) {
+		return true;
+	}
+	if (malloc_mutex_init(&prof_dump_filename_mtx,
+	    "prof_dump_filename", WITNESS_RANK_PROF_DUMP_FILENAME,
+	    malloc_mutex_rank_exclusive)) {
+		return true;
+	}
+	if (malloc_mutex_init(&prof_dump_mtx, "prof_dump",
+	    WITNESS_RANK_PROF_DUMP, malloc_mutex_rank_exclusive)) {
+		return true;
+	}
+
+	if (opt_prof) {
+		lg_prof_sample = opt_lg_prof_sample;
+		prof_unbias_map_init();
+		prof_active_state = opt_prof_active;
+		prof_gdump_val = opt_prof_gdump;
+		prof_thread_active_init = opt_prof_thread_active_init;
+
+		if (prof_data_init(tsd)) {
+			return true;
+		}
+
+		next_thr_uid = 0;
+		if (prof_idump_accum_init()) {
+			return true;
+		}
+
+		if (opt_prof_final && opt_prof_prefix[0] != '\0' &&
+		    atexit(prof_fdump) != 0) {
+			malloc_write("<jemalloc>: Error in atexit()\n");
+			if (opt_abort) {
+				abort();
+			}
+		}
+
+		if (prof_log_init(tsd)) {
+			return true;
+		}
+
+		if (prof_recent_init()) {
+			return true;
+		}
+
+		prof_base = base;
+
+		gctx_locks = (malloc_mutex_t *)base_alloc(tsd_tsdn(tsd), base,
+		    PROF_NCTX_LOCKS * sizeof(malloc_mutex_t), CACHELINE);
+		if (gctx_locks == NULL) {
+			return true;
+		}
+		for (unsigned i = 0; i < PROF_NCTX_LOCKS; i++) {
+			if (malloc_mutex_init(&gctx_locks[i], "prof_gctx",
+			    WITNESS_RANK_PROF_GCTX,
+			    malloc_mutex_rank_exclusive)) {
+				return true;
+			}
+		}
+
+		tdata_locks = (malloc_mutex_t *)base_alloc(tsd_tsdn(tsd), base,
+		    PROF_NTDATA_LOCKS * sizeof(malloc_mutex_t), CACHELINE);
+		if (tdata_locks == NULL) {
+			return true;
+		}
+		for (unsigned i = 0; i < PROF_NTDATA_LOCKS; i++) {
+			if (malloc_mutex_init(&tdata_locks[i], "prof_tdata",
+			    WITNESS_RANK_PROF_TDATA,
+			    malloc_mutex_rank_exclusive)) {
+				return true;
+			}
+		}
+
+		prof_unwind_init();
+		prof_hooks_init();
+	}
+	prof_booted = true;
+
+	return false;
+}
+
+void
+prof_prefork0(tsdn_t *tsdn) {
+	if (config_prof && opt_prof) {
+		unsigned i;
+
+		malloc_mutex_prefork(tsdn, &prof_dump_mtx);
+		malloc_mutex_prefork(tsdn, &bt2gctx_mtx);
+		malloc_mutex_prefork(tsdn, &tdatas_mtx);
+		for (i = 0; i < PROF_NTDATA_LOCKS; i++) {
+			malloc_mutex_prefork(tsdn, &tdata_locks[i]);
+		}
+		malloc_mutex_prefork(tsdn, &log_mtx);
+		for (i = 0; i < PROF_NCTX_LOCKS; i++) {
+			malloc_mutex_prefork(tsdn, &gctx_locks[i]);
+		}
+		malloc_mutex_prefork(tsdn, &prof_recent_dump_mtx);
+	}
+}
+
+void
+prof_prefork1(tsdn_t *tsdn) {
+	if (config_prof && opt_prof) {
+		counter_prefork(tsdn, &prof_idump_accumulated);
+		malloc_mutex_prefork(tsdn, &prof_active_mtx);
+		malloc_mutex_prefork(tsdn, &prof_dump_filename_mtx);
+		malloc_mutex_prefork(tsdn, &prof_gdump_mtx);
+		malloc_mutex_prefork(tsdn, &prof_recent_alloc_mtx);
+		malloc_mutex_prefork(tsdn, &prof_stats_mtx);
+		malloc_mutex_prefork(tsdn, &next_thr_uid_mtx);
+		malloc_mutex_prefork(tsdn, &prof_thread_active_init_mtx);
+	}
+}
+
+void
+prof_postfork_parent(tsdn_t *tsdn) {
+	if (config_prof && opt_prof) {
+		unsigned i;
+
+		malloc_mutex_postfork_parent(tsdn,
+		    &prof_thread_active_init_mtx);
+		malloc_mutex_postfork_parent(tsdn, &next_thr_uid_mtx);
+		malloc_mutex_postfork_parent(tsdn, &prof_stats_mtx);
+		malloc_mutex_postfork_parent(tsdn, &prof_recent_alloc_mtx);
+		malloc_mutex_postfork_parent(tsdn, &prof_gdump_mtx);
+		malloc_mutex_postfork_parent(tsdn, &prof_dump_filename_mtx);
+		malloc_mutex_postfork_parent(tsdn, &prof_active_mtx);
+		counter_postfork_parent(tsdn, &prof_idump_accumulated);
+		malloc_mutex_postfork_parent(tsdn, &prof_recent_dump_mtx);
+		for (i = 0; i < PROF_NCTX_LOCKS; i++) {
+			malloc_mutex_postfork_parent(tsdn, &gctx_locks[i]);
+		}
+		malloc_mutex_postfork_parent(tsdn, &log_mtx);
+		for (i = 0; i < PROF_NTDATA_LOCKS; i++) {
+			malloc_mutex_postfork_parent(tsdn, &tdata_locks[i]);
+		}
+		malloc_mutex_postfork_parent(tsdn, &tdatas_mtx);
+		malloc_mutex_postfork_parent(tsdn, &bt2gctx_mtx);
+		malloc_mutex_postfork_parent(tsdn, &prof_dump_mtx);
+	}
+}
+
+void
+prof_postfork_child(tsdn_t *tsdn) {
+	if (config_prof && opt_prof) {
+		unsigned i;
+
+		malloc_mutex_postfork_child(tsdn, &prof_thread_active_init_mtx);
+		malloc_mutex_postfork_child(tsdn, &next_thr_uid_mtx);
+		malloc_mutex_postfork_child(tsdn, &prof_stats_mtx);
+		malloc_mutex_postfork_child(tsdn, &prof_recent_alloc_mtx);
+		malloc_mutex_postfork_child(tsdn, &prof_gdump_mtx);
+		malloc_mutex_postfork_child(tsdn, &prof_dump_filename_mtx);
+		malloc_mutex_postfork_child(tsdn, &prof_active_mtx);
+		counter_postfork_child(tsdn, &prof_idump_accumulated);
+		malloc_mutex_postfork_child(tsdn, &prof_recent_dump_mtx);
+		for (i = 0; i < PROF_NCTX_LOCKS; i++) {
+			malloc_mutex_postfork_child(tsdn, &gctx_locks[i]);
+		}
+		malloc_mutex_postfork_child(tsdn, &log_mtx);
+		for (i = 0; i < PROF_NTDATA_LOCKS; i++) {
+			malloc_mutex_postfork_child(tsdn, &tdata_locks[i]);
+		}
+		malloc_mutex_postfork_child(tsdn, &tdatas_mtx);
+		malloc_mutex_postfork_child(tsdn, &bt2gctx_mtx);
+		malloc_mutex_postfork_child(tsdn, &prof_dump_mtx);
+	}
+}
+
+/******************************************************************************/
diff --git a/deps/jemalloc/src/prof_data.c b/deps/jemalloc/src/prof_data.c
new file mode 100644
index 0000000..bfa55be
--- /dev/null
+++ b/deps/jemalloc/src/prof_data.c
@@ -0,0 +1,1447 @@
+#include "jemalloc/internal/jemalloc_preamble.h"
+#include "jemalloc/internal/jemalloc_internal_includes.h"
+
+#include "jemalloc/internal/assert.h"
+#include "jemalloc/internal/ckh.h"
+#include "jemalloc/internal/hash.h"
+#include "jemalloc/internal/malloc_io.h"
+#include "jemalloc/internal/prof_data.h"
+
+/*
+ * This file defines and manages the core profiling data structures.
+ *
+ * Conceptually, profiling data can be imagined as a table with three columns:
+ * thread, stack trace, and current allocation size.  (When prof_accum is on,
+ * there's one additional column which is the cumulative allocation size.)
+ *
+ * Implementation wise, each thread maintains a hash recording the stack trace
+ * to allocation size correspondences, which are basically the individual rows
+ * in the table.  In addition, two global "indices" are built to make data
+ * aggregation efficient (for dumping): bt2gctx and tdatas, which are basically
+ * the "grouped by stack trace" and "grouped by thread" views of the same table,
+ * respectively.  Note that the allocation size is only aggregated to the two
+ * indices at dumping time, so as to optimize for performance.
+ */
+
+/******************************************************************************/
+
+malloc_mutex_t bt2gctx_mtx;
+malloc_mutex_t tdatas_mtx;
+malloc_mutex_t prof_dump_mtx;
+
+/*
+ * Table of mutexes that are shared among gctx's.  These are leaf locks, so
+ * there is no problem with using them for more than one gctx at the same time.
+ * The primary motivation for this sharing though is that gctx's are ephemeral,
+ * and destroying mutexes causes complications for systems that allocate when
+ * creating/destroying mutexes.
+ */
+malloc_mutex_t *gctx_locks;
+static atomic_u_t cum_gctxs; /* Atomic counter. */
+
+/*
+ * Table of mutexes that are shared among tdata's.  No operations require
+ * holding multiple tdata locks, so there is no problem with using them for more
+ * than one tdata at the same time, even though a gctx lock may be acquired
+ * while holding a tdata lock.
+ */
+malloc_mutex_t *tdata_locks;
+
+/*
+ * Global hash of (prof_bt_t *)-->(prof_gctx_t *).  This is the master data
+ * structure that knows about all backtraces currently captured.
+ */
+static ckh_t bt2gctx;
+
+/*
+ * Tree of all extant prof_tdata_t structures, regardless of state,
+ * {attached,detached,expired}.
+ */
+static prof_tdata_tree_t tdatas;
+
+size_t prof_unbiased_sz[PROF_SC_NSIZES];
+size_t prof_shifted_unbiased_cnt[PROF_SC_NSIZES];
+
+/******************************************************************************/
+/* Red-black trees. */
+
+static int
+prof_tctx_comp(const prof_tctx_t *a, const prof_tctx_t *b) {
+	uint64_t a_thr_uid = a->thr_uid;
+	uint64_t b_thr_uid = b->thr_uid;
+	int ret = (a_thr_uid > b_thr_uid) - (a_thr_uid < b_thr_uid);
+	if (ret == 0) {
+		uint64_t a_thr_discrim = a->thr_discrim;
+		uint64_t b_thr_discrim = b->thr_discrim;
+		ret = (a_thr_discrim > b_thr_discrim) - (a_thr_discrim <
+		    b_thr_discrim);
+		if (ret == 0) {
+			uint64_t a_tctx_uid = a->tctx_uid;
+			uint64_t b_tctx_uid = b->tctx_uid;
+			ret = (a_tctx_uid > b_tctx_uid) - (a_tctx_uid <
+			    b_tctx_uid);
+		}
+	}
+	return ret;
+}
+
+rb_gen(static UNUSED, tctx_tree_, prof_tctx_tree_t, prof_tctx_t,
+    tctx_link, prof_tctx_comp)
+
+static int
+prof_gctx_comp(const prof_gctx_t *a, const prof_gctx_t *b) {
+	unsigned a_len = a->bt.len;
+	unsigned b_len = b->bt.len;
+	unsigned comp_len = (a_len < b_len) ? a_len : b_len;
+	int ret = memcmp(a->bt.vec, b->bt.vec, comp_len * sizeof(void *));
+	if (ret == 0) {
+		ret = (a_len > b_len) - (a_len < b_len);
+	}
+	return ret;
+}
+
+rb_gen(static UNUSED, gctx_tree_, prof_gctx_tree_t, prof_gctx_t, dump_link,
+    prof_gctx_comp)
+
+static int
+prof_tdata_comp(const prof_tdata_t *a, const prof_tdata_t *b) {
+	int ret;
+	uint64_t a_uid = a->thr_uid;
+	uint64_t b_uid = b->thr_uid;
+
+	ret = ((a_uid > b_uid) - (a_uid < b_uid));
+	if (ret == 0) {
+		uint64_t a_discrim = a->thr_discrim;
+		uint64_t b_discrim = b->thr_discrim;
+
+		ret = ((a_discrim > b_discrim) - (a_discrim < b_discrim));
+	}
+	return ret;
+}
+
+rb_gen(static UNUSED, tdata_tree_, prof_tdata_tree_t, prof_tdata_t, tdata_link,
+    prof_tdata_comp)
+
+/******************************************************************************/
+
+static malloc_mutex_t *
+prof_gctx_mutex_choose(void) {
+	unsigned ngctxs = atomic_fetch_add_u(&cum_gctxs, 1, ATOMIC_RELAXED);
+
+	return &gctx_locks[(ngctxs - 1) % PROF_NCTX_LOCKS];
+}
+
+static malloc_mutex_t *
+prof_tdata_mutex_choose(uint64_t thr_uid) {
+	return &tdata_locks[thr_uid % PROF_NTDATA_LOCKS];
+}
+
+bool
+prof_data_init(tsd_t *tsd) {
+	tdata_tree_new(&tdatas);
+	return ckh_new(tsd, &bt2gctx, PROF_CKH_MINITEMS,
+	    prof_bt_hash, prof_bt_keycomp);
+}
+
+static void
+prof_enter(tsd_t *tsd, prof_tdata_t *tdata) {
+	cassert(config_prof);
+	assert(tdata == prof_tdata_get(tsd, false));
+
+	if (tdata != NULL) {
+		assert(!tdata->enq);
+		tdata->enq = true;
+	}
+
+	malloc_mutex_lock(tsd_tsdn(tsd), &bt2gctx_mtx);
+}
+
+static void
+prof_leave(tsd_t *tsd, prof_tdata_t *tdata) {
+	cassert(config_prof);
+	assert(tdata == prof_tdata_get(tsd, false));
+
+	malloc_mutex_unlock(tsd_tsdn(tsd), &bt2gctx_mtx);
+
+	if (tdata != NULL) {
+		bool idump, gdump;
+
+		assert(tdata->enq);
+		tdata->enq = false;
+		idump = tdata->enq_idump;
+		tdata->enq_idump = false;
+		gdump = tdata->enq_gdump;
+		tdata->enq_gdump = false;
+
+		if (idump) {
+			prof_idump(tsd_tsdn(tsd));
+		}
+		if (gdump) {
+			prof_gdump(tsd_tsdn(tsd));
+		}
+	}
+}
+
+static prof_gctx_t *
+prof_gctx_create(tsdn_t *tsdn, prof_bt_t *bt) {
+	/*
+	 * Create a single allocation that has space for vec of length bt->len.
+	 */
+	size_t size = offsetof(prof_gctx_t, vec) + (bt->len * sizeof(void *));
+	prof_gctx_t *gctx = (prof_gctx_t *)iallocztm(tsdn, size,
+	    sz_size2index(size), false, NULL, true, arena_get(TSDN_NULL, 0, true),
+	    true);
+	if (gctx == NULL) {
+		return NULL;
+	}
+	gctx->lock = prof_gctx_mutex_choose();
+	/*
+	 * Set nlimbo to 1, in order to avoid a race condition with
+	 * prof_tctx_destroy()/prof_gctx_try_destroy().
+	 */
+	gctx->nlimbo = 1;
+	tctx_tree_new(&gctx->tctxs);
+	/* Duplicate bt. */
+	memcpy(gctx->vec, bt->vec, bt->len * sizeof(void *));
+	gctx->bt.vec = gctx->vec;
+	gctx->bt.len = bt->len;
+	return gctx;
+}
+
+static void
+prof_gctx_try_destroy(tsd_t *tsd, prof_tdata_t *tdata_self,
+    prof_gctx_t *gctx) {
+	cassert(config_prof);
+
+	/*
+	 * Check that gctx is still unused by any thread cache before destroying
+	 * it.  prof_lookup() increments gctx->nlimbo in order to avoid a race
+	 * condition with this function, as does prof_tctx_destroy() in order to
+	 * avoid a race between the main body of prof_tctx_destroy() and entry
+	 * into this function.
+	 */
+	prof_enter(tsd, tdata_self);
+	malloc_mutex_lock(tsd_tsdn(tsd), gctx->lock);
+	assert(gctx->nlimbo != 0);
+	if (tctx_tree_empty(&gctx->tctxs) && gctx->nlimbo == 1) {
+		/* Remove gctx from bt2gctx. */
+		if (ckh_remove(tsd, &bt2gctx, &gctx->bt, NULL, NULL)) {
+			not_reached();
+		}
+		prof_leave(tsd, tdata_self);
+		/* Destroy gctx. */
+		malloc_mutex_unlock(tsd_tsdn(tsd), gctx->lock);
+		idalloctm(tsd_tsdn(tsd), gctx, NULL, NULL, true, true);
+	} else {
+		/*
+		 * Compensate for increment in prof_tctx_destroy() or
+		 * prof_lookup().
+		 */
+		gctx->nlimbo--;
+		malloc_mutex_unlock(tsd_tsdn(tsd), gctx->lock);
+		prof_leave(tsd, tdata_self);
+	}
+}
+
+static bool
+prof_gctx_should_destroy(prof_gctx_t *gctx) {
+	if (opt_prof_accum) {
+		return false;
+	}
+	if (!tctx_tree_empty(&gctx->tctxs)) {
+		return false;
+	}
+	if (gctx->nlimbo != 0) {
+		return false;
+	}
+	return true;
+}
+
+static bool
+prof_lookup_global(tsd_t *tsd, prof_bt_t *bt, prof_tdata_t *tdata,
+    void **p_btkey, prof_gctx_t **p_gctx, bool *p_new_gctx) {
+	union {
+		prof_gctx_t	*p;
+		void		*v;
+	} gctx, tgctx;
+	union {
+		prof_bt_t	*p;
+		void		*v;
+	} btkey;
+	bool new_gctx;
+
+	prof_enter(tsd, tdata);
+	if (ckh_search(&bt2gctx, bt, &btkey.v, &gctx.v)) {
+		/* bt has never been seen before.  Insert it. */
+		prof_leave(tsd, tdata);
+		tgctx.p = prof_gctx_create(tsd_tsdn(tsd), bt);
+		if (tgctx.v == NULL) {
+			return true;
+		}
+		prof_enter(tsd, tdata);
+		if (ckh_search(&bt2gctx, bt, &btkey.v, &gctx.v)) {
+			gctx.p = tgctx.p;
+			btkey.p = &gctx.p->bt;
+			if (ckh_insert(tsd, &bt2gctx, btkey.v, gctx.v)) {
+				/* OOM. */
+				prof_leave(tsd, tdata);
+				idalloctm(tsd_tsdn(tsd), gctx.v, NULL, NULL,
+				    true, true);
+				return true;
+			}
+			new_gctx = true;
+		} else {
+			new_gctx = false;
+		}
+	} else {
+		tgctx.v = NULL;
+		new_gctx = false;
+	}
+
+	if (!new_gctx) {
+		/*
+		 * Increment nlimbo, in order to avoid a race condition with
+		 * prof_tctx_destroy()/prof_gctx_try_destroy().
+		 */
+		malloc_mutex_lock(tsd_tsdn(tsd), gctx.p->lock);
+		gctx.p->nlimbo++;
+		malloc_mutex_unlock(tsd_tsdn(tsd), gctx.p->lock);
+		new_gctx = false;
+
+		if (tgctx.v != NULL) {
+			/* Lost race to insert. */
+			idalloctm(tsd_tsdn(tsd), tgctx.v, NULL, NULL, true,
+			    true);
+		}
+	}
+	prof_leave(tsd, tdata);
+
+	*p_btkey = btkey.v;
+	*p_gctx = gctx.p;
+	*p_new_gctx = new_gctx;
+	return false;
+}
+
+prof_tctx_t *
+prof_lookup(tsd_t *tsd, prof_bt_t *bt) {
+	union {
+		prof_tctx_t	*p;
+		void		*v;
+	} ret;
+	prof_tdata_t *tdata;
+	bool not_found;
+
+	cassert(config_prof);
+
+	tdata = prof_tdata_get(tsd, false);
+	assert(tdata != NULL);
+
+	malloc_mutex_lock(tsd_tsdn(tsd), tdata->lock);
+	not_found = ckh_search(&tdata->bt2tctx, bt, NULL, &ret.v);
+	if (!not_found) { /* Note double negative! */
+		ret.p->prepared = true;
+	}
+	malloc_mutex_unlock(tsd_tsdn(tsd), tdata->lock);
+	if (not_found) {
+		void *btkey;
+		prof_gctx_t *gctx;
+		bool new_gctx, error;
+
+		/*
+		 * This thread's cache lacks bt.  Look for it in the global
+		 * cache.
+		 */
+		if (prof_lookup_global(tsd, bt, tdata, &btkey, &gctx,
+		    &new_gctx)) {
+			return NULL;
+		}
+
+		/* Link a prof_tctx_t into gctx for this thread. */
+		ret.v = iallocztm(tsd_tsdn(tsd), sizeof(prof_tctx_t),
+		    sz_size2index(sizeof(prof_tctx_t)), false, NULL, true,
+		    arena_ichoose(tsd, NULL), true);
+		if (ret.p == NULL) {
+			if (new_gctx) {
+				prof_gctx_try_destroy(tsd, tdata, gctx);
+			}
+			return NULL;
+		}
+		ret.p->tdata = tdata;
+		ret.p->thr_uid = tdata->thr_uid;
+		ret.p->thr_discrim = tdata->thr_discrim;
+		ret.p->recent_count = 0;
+		memset(&ret.p->cnts, 0, sizeof(prof_cnt_t));
+		ret.p->gctx = gctx;
+		ret.p->tctx_uid = tdata->tctx_uid_next++;
+		ret.p->prepared = true;
+		ret.p->state = prof_tctx_state_initializing;
+		malloc_mutex_lock(tsd_tsdn(tsd), tdata->lock);
+		error = ckh_insert(tsd, &tdata->bt2tctx, btkey, ret.v);
+		malloc_mutex_unlock(tsd_tsdn(tsd), tdata->lock);
+		if (error) {
+			if (new_gctx) {
+				prof_gctx_try_destroy(tsd, tdata, gctx);
+			}
+			idalloctm(tsd_tsdn(tsd), ret.v, NULL, NULL, true, true);
+			return NULL;
+		}
+		malloc_mutex_lock(tsd_tsdn(tsd), gctx->lock);
+		ret.p->state = prof_tctx_state_nominal;
+		tctx_tree_insert(&gctx->tctxs, ret.p);
+		gctx->nlimbo--;
+		malloc_mutex_unlock(tsd_tsdn(tsd), gctx->lock);
+	}
+
+	return ret.p;
+}
+
+/* Used in unit tests. */
+static prof_tdata_t *
+prof_tdata_count_iter(prof_tdata_tree_t *tdatas_ptr, prof_tdata_t *tdata,
+    void *arg) {
+	size_t *tdata_count = (size_t *)arg;
+
+	(*tdata_count)++;
+
+	return NULL;
+}
+
+/* Used in unit tests. */
+size_t
+prof_tdata_count(void) {
+	size_t tdata_count = 0;
+	tsdn_t *tsdn;
+
+	tsdn = tsdn_fetch();
+	malloc_mutex_lock(tsdn, &tdatas_mtx);
+	tdata_tree_iter(&tdatas, NULL, prof_tdata_count_iter,
+	    (void *)&tdata_count);
+	malloc_mutex_unlock(tsdn, &tdatas_mtx);
+
+	return tdata_count;
+}
+
+/* Used in unit tests. */
+size_t
+prof_bt_count(void) {
+	size_t bt_count;
+	tsd_t *tsd;
+	prof_tdata_t *tdata;
+
+	tsd = tsd_fetch();
+	tdata = prof_tdata_get(tsd, false);
+	if (tdata == NULL) {
+		return 0;
+	}
+
+	malloc_mutex_lock(tsd_tsdn(tsd), &bt2gctx_mtx);
+	bt_count = ckh_count(&bt2gctx);
+	malloc_mutex_unlock(tsd_tsdn(tsd), &bt2gctx_mtx);
+
+	return bt_count;
+}
+
+char *
+prof_thread_name_alloc(tsd_t *tsd, const char *thread_name) {
+	char *ret;
+	size_t size;
+
+	if (thread_name == NULL) {
+		return NULL;
+	}
+
+	size = strlen(thread_name) + 1;
+	if (size == 1) {
+		return "";
+	}
+
+	ret = iallocztm(tsd_tsdn(tsd), size, sz_size2index(size), false, NULL,
+	    true, arena_get(TSDN_NULL, 0, true), true);
+	if (ret == NULL) {
+		return NULL;
+	}
+	memcpy(ret, thread_name, size);
+	return ret;
+}
+
+int
+prof_thread_name_set_impl(tsd_t *tsd, const char *thread_name) {
+	assert(tsd_reentrancy_level_get(tsd) == 0);
+
+	prof_tdata_t *tdata;
+	unsigned i;
+	char *s;
+
+	tdata = prof_tdata_get(tsd, true);
+	if (tdata == NULL) {
+		return EAGAIN;
+	}
+
+	/* Validate input. */
+	if (thread_name == NULL) {
+		return EFAULT;
+	}
+	for (i = 0; thread_name[i] != '\0'; i++) {
+		char c = thread_name[i];
+		if (!isgraph(c) && !isblank(c)) {
+			return EFAULT;
+		}
+	}
+
+	s = prof_thread_name_alloc(tsd, thread_name);
+	if (s == NULL) {
+		return EAGAIN;
+	}
+
+	if (tdata->thread_name != NULL) {
+		idalloctm(tsd_tsdn(tsd), tdata->thread_name, NULL, NULL, true,
+		    true);
+		tdata->thread_name = NULL;
+	}
+	if (strlen(s) > 0) {
+		tdata->thread_name = s;
+	}
+	return 0;
+}
+
+JEMALLOC_FORMAT_PRINTF(3, 4)
+static void
+prof_dump_printf(write_cb_t *prof_dump_write, void *cbopaque,
+    const char *format, ...) {
+	va_list ap;
+	char buf[PROF_PRINTF_BUFSIZE];
+
+	va_start(ap, format);
+	malloc_vsnprintf(buf, sizeof(buf), format, ap);
+	va_end(ap);
+	prof_dump_write(cbopaque, buf);
+}
+
+/*
+ * Casting a double to a uint64_t may not necessarily be in range; this can be
+ * UB.  I don't think this is practically possible with the cur counters, but
+ * plausibly could be with the accum counters.
+ */
+#ifdef JEMALLOC_PROF
+static uint64_t
+prof_double_uint64_cast(double d) {
+	/*
+	 * Note: UINT64_MAX + 1 is exactly representable as a double on all
+	 * reasonable platforms (certainly those we'll support).  Writing this
+	 * as !(a < b) instead of (a >= b) means that we're NaN-safe.
+	 */
+	double rounded = round(d);
+	if (!(rounded < (double)UINT64_MAX)) {
+		return UINT64_MAX;
+	}
+	return (uint64_t)rounded;
+}
+#endif
+
+void prof_unbias_map_init() {
+	/* See the comment in prof_sample_new_event_wait */
+#ifdef JEMALLOC_PROF
+	for (szind_t i = 0; i < SC_NSIZES; i++) {
+		double sz = (double)sz_index2size(i);
+		double rate = (double)(ZU(1) << lg_prof_sample);
+		double div_val = 1.0 - exp(-sz / rate);
+		double unbiased_sz = sz / div_val;
+		/*
+		 * The "true" right value for the unbiased count is
+		 * 1.0/(1 - exp(-sz/rate)).  The problem is, we keep the counts
+		 * as integers (for a variety of reasons -- rounding errors
+		 * could trigger asserts, and not all libcs can properly handle
+		 * floating point arithmetic during malloc calls inside libc).
+		 * Rounding to an integer, though, can lead to rounding errors
+		 * of over 30% for sizes close to the sampling rate.  So
+		 * instead, we multiply by a constant, dividing the maximum
+		 * possible roundoff error by that constant.  To avoid overflow
+		 * in summing up size_t values, the largest safe constant we can
+		 * pick is the size of the smallest allocation.
+		 */
+		double cnt_shift = (double)(ZU(1) << SC_LG_TINY_MIN);
+		double shifted_unbiased_cnt = cnt_shift / div_val;
+		prof_unbiased_sz[i] = (size_t)round(unbiased_sz);
+		prof_shifted_unbiased_cnt[i] = (size_t)round(
+		    shifted_unbiased_cnt);
+	}
+#else
+	unreachable();
+#endif
+}
+
+/*
+ * The unbiasing story is long.  The jeprof unbiasing logic was copied from
+ * pprof.  Both shared an issue: they unbiased using the average size of the
+ * allocations at a particular stack trace.  This can work out OK if allocations
+ * are mostly of the same size given some stack, but not otherwise.  We now
+ * internally track what the unbiased results ought to be.  We can't just report
+ * them as they are though; they'll still go through the jeprof unbiasing
+ * process.  Instead, we figure out what values we can feed *into* jeprof's
+ * unbiasing mechanism that will lead to getting the right values out.
+ *
+ * It'll unbias count and aggregate size as:
+ *
+ *   c_out = c_in * 1/(1-exp(-s_in/c_in/R)
+ *   s_out = s_in * 1/(1-exp(-s_in/c_in/R)
+ *
+ * We want to solve for the values of c_in and s_in that will
+ * give the c_out and s_out that we've computed internally.
+ *
+ * Let's do a change of variables (both to make the math easier and to make it
+ * easier to write):
+ *   x = s_in / c_in
+ *   y = s_in
+ *   k = 1/R.
+ *
+ * Then
+ *   c_out = y/x * 1/(1-exp(-k*x))
+ *   s_out = y * 1/(1-exp(-k*x))
+ *
+ * The first equation gives:
+ *   y = x * c_out * (1-exp(-k*x))
+ * The second gives:
+ *   y = s_out * (1-exp(-k*x))
+ * So we have
+ *   x = s_out / c_out.
+ * And all the other values fall out from that.
+ *
+ * This is all a fair bit of work.  The thing we get out of it is that we don't
+ * break backwards compatibility with jeprof (and the various tools that have
+ * copied its unbiasing logic).  Eventually, we anticipate a v3 heap profile
+ * dump format based on JSON, at which point I think much of this logic can get
+ * cleaned up (since we'll be taking a compatibility break there anyways).
+ */
+static void
+prof_do_unbias(uint64_t c_out_shifted_i, uint64_t s_out_i, uint64_t *r_c_in,
+    uint64_t *r_s_in) {
+#ifdef JEMALLOC_PROF
+	if (c_out_shifted_i == 0 || s_out_i == 0) {
+		*r_c_in = 0;
+		*r_s_in = 0;
+		return;
+	}
+	/*
+	 * See the note in prof_unbias_map_init() to see why we take c_out in a
+	 * shifted form.
+	 */
+	double c_out = (double)c_out_shifted_i
+	    / (double)(ZU(1) << SC_LG_TINY_MIN);
+	double s_out = (double)s_out_i;
+	double R = (double)(ZU(1) << lg_prof_sample);
+
+	double x = s_out / c_out;
+	double y = s_out * (1.0 - exp(-x / R));
+
+	double c_in = y / x;
+	double s_in = y;
+
+	*r_c_in = prof_double_uint64_cast(c_in);
+	*r_s_in = prof_double_uint64_cast(s_in);
+#else
+	unreachable();
+#endif
+}
+
+static void
+prof_dump_print_cnts(write_cb_t *prof_dump_write, void *cbopaque,
+    const prof_cnt_t *cnts) {
+	uint64_t curobjs;
+	uint64_t curbytes;
+	uint64_t accumobjs;
+	uint64_t accumbytes;
+	if (opt_prof_unbias) {
+		prof_do_unbias(cnts->curobjs_shifted_unbiased,
+		    cnts->curbytes_unbiased, &curobjs, &curbytes);
+		prof_do_unbias(cnts->accumobjs_shifted_unbiased,
+		    cnts->accumbytes_unbiased, &accumobjs, &accumbytes);
+	} else {
+		curobjs = cnts->curobjs;
+		curbytes = cnts->curbytes;
+		accumobjs = cnts->accumobjs;
+		accumbytes = cnts->accumbytes;
+	}
+	prof_dump_printf(prof_dump_write, cbopaque,
+	    "%"FMTu64": %"FMTu64" [%"FMTu64": %"FMTu64"]",
+	    curobjs, curbytes, accumobjs, accumbytes);
+}
+
+static void
+prof_tctx_merge_tdata(tsdn_t *tsdn, prof_tctx_t *tctx, prof_tdata_t *tdata) {
+	malloc_mutex_assert_owner(tsdn, tctx->tdata->lock);
+
+	malloc_mutex_lock(tsdn, tctx->gctx->lock);
+
+	switch (tctx->state) {
+	case prof_tctx_state_initializing:
+		malloc_mutex_unlock(tsdn, tctx->gctx->lock);
+		return;
+	case prof_tctx_state_nominal:
+		tctx->state = prof_tctx_state_dumping;
+		malloc_mutex_unlock(tsdn, tctx->gctx->lock);
+
+		memcpy(&tctx->dump_cnts, &tctx->cnts, sizeof(prof_cnt_t));
+
+		tdata->cnt_summed.curobjs += tctx->dump_cnts.curobjs;
+		tdata->cnt_summed.curobjs_shifted_unbiased
+		    += tctx->dump_cnts.curobjs_shifted_unbiased;
+		tdata->cnt_summed.curbytes += tctx->dump_cnts.curbytes;
+		tdata->cnt_summed.curbytes_unbiased
+		    += tctx->dump_cnts.curbytes_unbiased;
+		if (opt_prof_accum) {
+			tdata->cnt_summed.accumobjs +=
+			    tctx->dump_cnts.accumobjs;
+			tdata->cnt_summed.accumobjs_shifted_unbiased +=
+			    tctx->dump_cnts.accumobjs_shifted_unbiased;
+			tdata->cnt_summed.accumbytes +=
+			    tctx->dump_cnts.accumbytes;
+			tdata->cnt_summed.accumbytes_unbiased +=
+			    tctx->dump_cnts.accumbytes_unbiased;
+		}
+		break;
+	case prof_tctx_state_dumping:
+	case prof_tctx_state_purgatory:
+		not_reached();
+	}
+}
+
+static void
+prof_tctx_merge_gctx(tsdn_t *tsdn, prof_tctx_t *tctx, prof_gctx_t *gctx) {
+	malloc_mutex_assert_owner(tsdn, gctx->lock);
+
+	gctx->cnt_summed.curobjs += tctx->dump_cnts.curobjs;
+	gctx->cnt_summed.curobjs_shifted_unbiased
+	    += tctx->dump_cnts.curobjs_shifted_unbiased;
+	gctx->cnt_summed.curbytes += tctx->dump_cnts.curbytes;
+	gctx->cnt_summed.curbytes_unbiased += tctx->dump_cnts.curbytes_unbiased;
+	if (opt_prof_accum) {
+		gctx->cnt_summed.accumobjs += tctx->dump_cnts.accumobjs;
+		gctx->cnt_summed.accumobjs_shifted_unbiased
+		    += tctx->dump_cnts.accumobjs_shifted_unbiased;
+		gctx->cnt_summed.accumbytes += tctx->dump_cnts.accumbytes;
+		gctx->cnt_summed.accumbytes_unbiased
+		    += tctx->dump_cnts.accumbytes_unbiased;
+	}
+}
+
+static prof_tctx_t *
+prof_tctx_merge_iter(prof_tctx_tree_t *tctxs, prof_tctx_t *tctx, void *arg) {
+	tsdn_t *tsdn = (tsdn_t *)arg;
+
+	malloc_mutex_assert_owner(tsdn, tctx->gctx->lock);
+
+	switch (tctx->state) {
+	case prof_tctx_state_nominal:
+		/* New since dumping started; ignore. */
+		break;
+	case prof_tctx_state_dumping:
+	case prof_tctx_state_purgatory:
+		prof_tctx_merge_gctx(tsdn, tctx, tctx->gctx);
+		break;
+	default:
+		not_reached();
+	}
+
+	return NULL;
+}
+
+typedef struct prof_dump_iter_arg_s prof_dump_iter_arg_t;
+struct prof_dump_iter_arg_s {
+	tsdn_t *tsdn;
+	write_cb_t *prof_dump_write;
+	void *cbopaque;
+};
+
+static prof_tctx_t *
+prof_tctx_dump_iter(prof_tctx_tree_t *tctxs, prof_tctx_t *tctx, void *opaque) {
+	prof_dump_iter_arg_t *arg = (prof_dump_iter_arg_t *)opaque;
+	malloc_mutex_assert_owner(arg->tsdn, tctx->gctx->lock);
+
+	switch (tctx->state) {
+	case prof_tctx_state_initializing:
+	case prof_tctx_state_nominal:
+		/* Not captured by this dump. */
+		break;
+	case prof_tctx_state_dumping:
+	case prof_tctx_state_purgatory:
+		prof_dump_printf(arg->prof_dump_write, arg->cbopaque,
+		    "  t%"FMTu64": ", tctx->thr_uid);
+		prof_dump_print_cnts(arg->prof_dump_write, arg->cbopaque,
+		    &tctx->dump_cnts);
+		arg->prof_dump_write(arg->cbopaque, "\n");
+		break;
+	default:
+		not_reached();
+	}
+	return NULL;
+}
+
+static prof_tctx_t *
+prof_tctx_finish_iter(prof_tctx_tree_t *tctxs, prof_tctx_t *tctx, void *arg) {
+	tsdn_t *tsdn = (tsdn_t *)arg;
+	prof_tctx_t *ret;
+
+	malloc_mutex_assert_owner(tsdn, tctx->gctx->lock);
+
+	switch (tctx->state) {
+	case prof_tctx_state_nominal:
+		/* New since dumping started; ignore. */
+		break;
+	case prof_tctx_state_dumping:
+		tctx->state = prof_tctx_state_nominal;
+		break;
+	case prof_tctx_state_purgatory:
+		ret = tctx;
+		goto label_return;
+	default:
+		not_reached();
+	}
+
+	ret = NULL;
+label_return:
+	return ret;
+}
+
+static void
+prof_dump_gctx_prep(tsdn_t *tsdn, prof_gctx_t *gctx, prof_gctx_tree_t *gctxs) {
+	cassert(config_prof);
+
+	malloc_mutex_lock(tsdn, gctx->lock);
+
+	/*
+	 * Increment nlimbo so that gctx won't go away before dump.
+	 * Additionally, link gctx into the dump list so that it is included in
+	 * prof_dump()'s second pass.
+	 */
+	gctx->nlimbo++;
+	gctx_tree_insert(gctxs, gctx);
+
+	memset(&gctx->cnt_summed, 0, sizeof(prof_cnt_t));
+
+	malloc_mutex_unlock(tsdn, gctx->lock);
+}
+
+typedef struct prof_gctx_merge_iter_arg_s prof_gctx_merge_iter_arg_t;
+struct prof_gctx_merge_iter_arg_s {
+	tsdn_t *tsdn;
+	size_t *leak_ngctx;
+};
+
+static prof_gctx_t *
+prof_gctx_merge_iter(prof_gctx_tree_t *gctxs, prof_gctx_t *gctx, void *opaque) {
+	prof_gctx_merge_iter_arg_t *arg = (prof_gctx_merge_iter_arg_t *)opaque;
+
+	malloc_mutex_lock(arg->tsdn, gctx->lock);
+	tctx_tree_iter(&gctx->tctxs, NULL, prof_tctx_merge_iter,
+	    (void *)arg->tsdn);
+	if (gctx->cnt_summed.curobjs != 0) {
+		(*arg->leak_ngctx)++;
+	}
+	malloc_mutex_unlock(arg->tsdn, gctx->lock);
+
+	return NULL;
+}
+
+static void
+prof_gctx_finish(tsd_t *tsd, prof_gctx_tree_t *gctxs) {
+	prof_tdata_t *tdata = prof_tdata_get(tsd, false);
+	prof_gctx_t *gctx;
+
+	/*
+	 * Standard tree iteration won't work here, because as soon as we
+	 * decrement gctx->nlimbo and unlock gctx, another thread can
+	 * concurrently destroy it, which will corrupt the tree.  Therefore,
+	 * tear down the tree one node at a time during iteration.
+	 */
+	while ((gctx = gctx_tree_first(gctxs)) != NULL) {
+		gctx_tree_remove(gctxs, gctx);
+		malloc_mutex_lock(tsd_tsdn(tsd), gctx->lock);
+		{
+			prof_tctx_t *next;
+
+			next = NULL;
+			do {
+				prof_tctx_t *to_destroy =
+				    tctx_tree_iter(&gctx->tctxs, next,
+				    prof_tctx_finish_iter,
+				    (void *)tsd_tsdn(tsd));
+				if (to_destroy != NULL) {
+					next = tctx_tree_next(&gctx->tctxs,
+					    to_destroy);
+					tctx_tree_remove(&gctx->tctxs,
+					    to_destroy);
+					idalloctm(tsd_tsdn(tsd), to_destroy,
+					    NULL, NULL, true, true);
+				} else {
+					next = NULL;
+				}
+			} while (next != NULL);
+		}
+		gctx->nlimbo--;
+		if (prof_gctx_should_destroy(gctx)) {
+			gctx->nlimbo++;
+			malloc_mutex_unlock(tsd_tsdn(tsd), gctx->lock);
+			prof_gctx_try_destroy(tsd, tdata, gctx);
+		} else {
+			malloc_mutex_unlock(tsd_tsdn(tsd), gctx->lock);
+		}
+	}
+}
+
+typedef struct prof_tdata_merge_iter_arg_s prof_tdata_merge_iter_arg_t;
+struct prof_tdata_merge_iter_arg_s {
+	tsdn_t *tsdn;
+	prof_cnt_t *cnt_all;
+};
+
+static prof_tdata_t *
+prof_tdata_merge_iter(prof_tdata_tree_t *tdatas_ptr, prof_tdata_t *tdata,
+    void *opaque) {
+	prof_tdata_merge_iter_arg_t *arg =
+	    (prof_tdata_merge_iter_arg_t *)opaque;
+
+	malloc_mutex_lock(arg->tsdn, tdata->lock);
+	if (!tdata->expired) {
+		size_t tabind;
+		union {
+			prof_tctx_t	*p;
+			void		*v;
+		} tctx;
+
+		tdata->dumping = true;
+		memset(&tdata->cnt_summed, 0, sizeof(prof_cnt_t));
+		for (tabind = 0; !ckh_iter(&tdata->bt2tctx, &tabind, NULL,
+		    &tctx.v);) {
+			prof_tctx_merge_tdata(arg->tsdn, tctx.p, tdata);
+		}
+
+		arg->cnt_all->curobjs += tdata->cnt_summed.curobjs;
+		arg->cnt_all->curobjs_shifted_unbiased
+		    += tdata->cnt_summed.curobjs_shifted_unbiased;
+		arg->cnt_all->curbytes += tdata->cnt_summed.curbytes;
+		arg->cnt_all->curbytes_unbiased
+		    += tdata->cnt_summed.curbytes_unbiased;
+		if (opt_prof_accum) {
+			arg->cnt_all->accumobjs += tdata->cnt_summed.accumobjs;
+			arg->cnt_all->accumobjs_shifted_unbiased
+			    += tdata->cnt_summed.accumobjs_shifted_unbiased;
+			arg->cnt_all->accumbytes +=
+			    tdata->cnt_summed.accumbytes;
+			arg->cnt_all->accumbytes_unbiased +=
+			    tdata->cnt_summed.accumbytes_unbiased;
+		}
+	} else {
+		tdata->dumping = false;
+	}
+	malloc_mutex_unlock(arg->tsdn, tdata->lock);
+
+	return NULL;
+}
+
+static prof_tdata_t *
+prof_tdata_dump_iter(prof_tdata_tree_t *tdatas_ptr, prof_tdata_t *tdata,
+    void *opaque) {
+	if (!tdata->dumping) {
+		return NULL;
+	}
+
+	prof_dump_iter_arg_t *arg = (prof_dump_iter_arg_t *)opaque;
+	prof_dump_printf(arg->prof_dump_write, arg->cbopaque, "  t%"FMTu64": ",
+	    tdata->thr_uid);
+	prof_dump_print_cnts(arg->prof_dump_write, arg->cbopaque,
+	    &tdata->cnt_summed);
+	if (tdata->thread_name != NULL) {
+		arg->prof_dump_write(arg->cbopaque, " ");
+		arg->prof_dump_write(arg->cbopaque, tdata->thread_name);
+	}
+	arg->prof_dump_write(arg->cbopaque, "\n");
+	return NULL;
+}
+
+static void
+prof_dump_header(prof_dump_iter_arg_t *arg, const prof_cnt_t *cnt_all) {
+	prof_dump_printf(arg->prof_dump_write, arg->cbopaque,
+	    "heap_v2/%"FMTu64"\n  t*: ", ((uint64_t)1U << lg_prof_sample));
+	prof_dump_print_cnts(arg->prof_dump_write, arg->cbopaque, cnt_all);
+	arg->prof_dump_write(arg->cbopaque, "\n");
+
+	malloc_mutex_lock(arg->tsdn, &tdatas_mtx);
+	tdata_tree_iter(&tdatas, NULL, prof_tdata_dump_iter, arg);
+	malloc_mutex_unlock(arg->tsdn, &tdatas_mtx);
+}
+
+static void
+prof_dump_gctx(prof_dump_iter_arg_t *arg, prof_gctx_t *gctx,
+    const prof_bt_t *bt, prof_gctx_tree_t *gctxs) {
+	cassert(config_prof);
+	malloc_mutex_assert_owner(arg->tsdn, gctx->lock);
+
+	/* Avoid dumping such gctx's that have no useful data. */
+	if ((!opt_prof_accum && gctx->cnt_summed.curobjs == 0) ||
+	    (opt_prof_accum && gctx->cnt_summed.accumobjs == 0)) {
+		assert(gctx->cnt_summed.curobjs == 0);
+		assert(gctx->cnt_summed.curbytes == 0);
+		/*
+		 * These asserts would not be correct -- see the comment on races
+		 * in prof.c
+		 * assert(gctx->cnt_summed.curobjs_unbiased == 0);
+		 * assert(gctx->cnt_summed.curbytes_unbiased == 0);
+		*/
+		assert(gctx->cnt_summed.accumobjs == 0);
+		assert(gctx->cnt_summed.accumobjs_shifted_unbiased == 0);
+		assert(gctx->cnt_summed.accumbytes == 0);
+		assert(gctx->cnt_summed.accumbytes_unbiased == 0);
+		return;
+	}
+
+	arg->prof_dump_write(arg->cbopaque, "@");
+	for (unsigned i = 0; i < bt->len; i++) {
+		prof_dump_printf(arg->prof_dump_write, arg->cbopaque,
+		    " %#"FMTxPTR, (uintptr_t)bt->vec[i]);
+	}
+
+	arg->prof_dump_write(arg->cbopaque, "\n  t*: ");
+	prof_dump_print_cnts(arg->prof_dump_write, arg->cbopaque,
+	    &gctx->cnt_summed);
+	arg->prof_dump_write(arg->cbopaque, "\n");
+
+	tctx_tree_iter(&gctx->tctxs, NULL, prof_tctx_dump_iter, arg);
+}
+
+/*
+ * See prof_sample_new_event_wait() comment for why the body of this function
+ * is conditionally compiled.
+ */
+static void
+prof_leakcheck(const prof_cnt_t *cnt_all, size_t leak_ngctx) {
+#ifdef JEMALLOC_PROF
+	/*
+	 * Scaling is equivalent AdjustSamples() in jeprof, but the result may
+	 * differ slightly from what jeprof reports, because here we scale the
+	 * summary values, whereas jeprof scales each context individually and
+	 * reports the sums of the scaled values.
+	 */
+	if (cnt_all->curbytes != 0) {
+		double sample_period = (double)((uint64_t)1 << lg_prof_sample);
+		double ratio = (((double)cnt_all->curbytes) /
+		    (double)cnt_all->curobjs) / sample_period;
+		double scale_factor = 1.0 / (1.0 - exp(-ratio));
+		uint64_t curbytes = (uint64_t)round(((double)cnt_all->curbytes)
+		    * scale_factor);
+		uint64_t curobjs = (uint64_t)round(((double)cnt_all->curobjs) *
+		    scale_factor);
+
+		malloc_printf("<jemalloc>: Leak approximation summary: ~%"FMTu64
+		    " byte%s, ~%"FMTu64" object%s, >= %zu context%s\n",
+		    curbytes, (curbytes != 1) ? "s" : "", curobjs, (curobjs !=
+		    1) ? "s" : "", leak_ngctx, (leak_ngctx != 1) ? "s" : "");
+		malloc_printf(
+		    "<jemalloc>: Run jeprof on dump output for leak detail\n");
+		if (opt_prof_leak_error) {
+			malloc_printf(
+			    "<jemalloc>: Exiting with error code because memory"
+			    " leaks were detected\n");
+			/*
+			 * Use _exit() with underscore to avoid calling atexit()
+			 * and entering endless cycle.
+			 */
+			_exit(1);
+		}
+	}
+#endif
+}
+
+static prof_gctx_t *
+prof_gctx_dump_iter(prof_gctx_tree_t *gctxs, prof_gctx_t *gctx, void *opaque) {
+	prof_dump_iter_arg_t *arg = (prof_dump_iter_arg_t *)opaque;
+	malloc_mutex_lock(arg->tsdn, gctx->lock);
+	prof_dump_gctx(arg, gctx, &gctx->bt, gctxs);
+	malloc_mutex_unlock(arg->tsdn, gctx->lock);
+	return NULL;
+}
+
+static void
+prof_dump_prep(tsd_t *tsd, prof_tdata_t *tdata, prof_cnt_t *cnt_all,
+    size_t *leak_ngctx, prof_gctx_tree_t *gctxs) {
+	size_t tabind;
+	union {
+		prof_gctx_t	*p;
+		void		*v;
+	} gctx;
+
+	prof_enter(tsd, tdata);
+
+	/*
+	 * Put gctx's in limbo and clear their counters in preparation for
+	 * summing.
+	 */
+	gctx_tree_new(gctxs);
+	for (tabind = 0; !ckh_iter(&bt2gctx, &tabind, NULL, &gctx.v);) {
+		prof_dump_gctx_prep(tsd_tsdn(tsd), gctx.p, gctxs);
+	}
+
+	/*
+	 * Iterate over tdatas, and for the non-expired ones snapshot their tctx
+	 * stats and merge them into the associated gctx's.
+	 */
+	memset(cnt_all, 0, sizeof(prof_cnt_t));
+	prof_tdata_merge_iter_arg_t prof_tdata_merge_iter_arg = {tsd_tsdn(tsd),
+	    cnt_all};
+	malloc_mutex_lock(tsd_tsdn(tsd), &tdatas_mtx);
+	tdata_tree_iter(&tdatas, NULL, prof_tdata_merge_iter,
+	    &prof_tdata_merge_iter_arg);
+	malloc_mutex_unlock(tsd_tsdn(tsd), &tdatas_mtx);
+
+	/* Merge tctx stats into gctx's. */
+	*leak_ngctx = 0;
+	prof_gctx_merge_iter_arg_t prof_gctx_merge_iter_arg = {tsd_tsdn(tsd),
+	    leak_ngctx};
+	gctx_tree_iter(gctxs, NULL, prof_gctx_merge_iter,
+	    &prof_gctx_merge_iter_arg);
+
+	prof_leave(tsd, tdata);
+}
+
+void
+prof_dump_impl(tsd_t *tsd, write_cb_t *prof_dump_write, void *cbopaque,
+    prof_tdata_t *tdata, bool leakcheck) {
+	malloc_mutex_assert_owner(tsd_tsdn(tsd), &prof_dump_mtx);
+	prof_cnt_t cnt_all;
+	size_t leak_ngctx;
+	prof_gctx_tree_t gctxs;
+	prof_dump_prep(tsd, tdata, &cnt_all, &leak_ngctx, &gctxs);
+	prof_dump_iter_arg_t prof_dump_iter_arg = {tsd_tsdn(tsd),
+	    prof_dump_write, cbopaque};
+	prof_dump_header(&prof_dump_iter_arg, &cnt_all);
+	gctx_tree_iter(&gctxs, NULL, prof_gctx_dump_iter, &prof_dump_iter_arg);
+	prof_gctx_finish(tsd, &gctxs);
+	if (leakcheck) {
+		prof_leakcheck(&cnt_all, leak_ngctx);
+	}
+}
+
+/* Used in unit tests. */
+void
+prof_cnt_all(prof_cnt_t *cnt_all) {
+	tsd_t *tsd = tsd_fetch();
+	prof_tdata_t *tdata = prof_tdata_get(tsd, false);
+	if (tdata == NULL) {
+		memset(cnt_all, 0, sizeof(prof_cnt_t));
+	} else {
+		size_t leak_ngctx;
+		prof_gctx_tree_t gctxs;
+		prof_dump_prep(tsd, tdata, cnt_all, &leak_ngctx, &gctxs);
+		prof_gctx_finish(tsd, &gctxs);
+	}
+}
+
+void
+prof_bt_hash(const void *key, size_t r_hash[2]) {
+	prof_bt_t *bt = (prof_bt_t *)key;
+
+	cassert(config_prof);
+
+	hash(bt->vec, bt->len * sizeof(void *), 0x94122f33U, r_hash);
+}
+
+bool
+prof_bt_keycomp(const void *k1, const void *k2) {
+	const prof_bt_t *bt1 = (prof_bt_t *)k1;
+	const prof_bt_t *bt2 = (prof_bt_t *)k2;
+
+	cassert(config_prof);
+
+	if (bt1->len != bt2->len) {
+		return false;
+	}
+	return (memcmp(bt1->vec, bt2->vec, bt1->len * sizeof(void *)) == 0);
+}
+
+prof_tdata_t *
+prof_tdata_init_impl(tsd_t *tsd, uint64_t thr_uid, uint64_t thr_discrim,
+    char *thread_name, bool active) {
+	assert(tsd_reentrancy_level_get(tsd) == 0);
+
+	prof_tdata_t *tdata;
+
+	cassert(config_prof);
+
+	/* Initialize an empty cache for this thread. */
+	tdata = (prof_tdata_t *)iallocztm(tsd_tsdn(tsd), sizeof(prof_tdata_t),
+	    sz_size2index(sizeof(prof_tdata_t)), false, NULL, true,
+	    arena_get(TSDN_NULL, 0, true), true);
+	if (tdata == NULL) {
+		return NULL;
+	}
+
+	tdata->lock = prof_tdata_mutex_choose(thr_uid);
+	tdata->thr_uid = thr_uid;
+	tdata->thr_discrim = thr_discrim;
+	tdata->thread_name = thread_name;
+	tdata->attached = true;
+	tdata->expired = false;
+	tdata->tctx_uid_next = 0;
+
+	if (ckh_new(tsd, &tdata->bt2tctx, PROF_CKH_MINITEMS, prof_bt_hash,
+	    prof_bt_keycomp)) {
+		idalloctm(tsd_tsdn(tsd), tdata, NULL, NULL, true, true);
+		return NULL;
+	}
+
+	tdata->enq = false;
+	tdata->enq_idump = false;
+	tdata->enq_gdump = false;
+
+	tdata->dumping = false;
+	tdata->active = active;
+
+	malloc_mutex_lock(tsd_tsdn(tsd), &tdatas_mtx);
+	tdata_tree_insert(&tdatas, tdata);
+	malloc_mutex_unlock(tsd_tsdn(tsd), &tdatas_mtx);
+
+	return tdata;
+}
+
+static bool
+prof_tdata_should_destroy_unlocked(prof_tdata_t *tdata, bool even_if_attached) {
+	if (tdata->attached && !even_if_attached) {
+		return false;
+	}
+	if (ckh_count(&tdata->bt2tctx) != 0) {
+		return false;
+	}
+	return true;
+}
+
+static bool
+prof_tdata_should_destroy(tsdn_t *tsdn, prof_tdata_t *tdata,
+    bool even_if_attached) {
+	malloc_mutex_assert_owner(tsdn, tdata->lock);
+
+	return prof_tdata_should_destroy_unlocked(tdata, even_if_attached);
+}
+
+static void
+prof_tdata_destroy_locked(tsd_t *tsd, prof_tdata_t *tdata,
+    bool even_if_attached) {
+	malloc_mutex_assert_owner(tsd_tsdn(tsd), &tdatas_mtx);
+	malloc_mutex_assert_not_owner(tsd_tsdn(tsd), tdata->lock);
+
+	tdata_tree_remove(&tdatas, tdata);
+
+	assert(prof_tdata_should_destroy_unlocked(tdata, even_if_attached));
+
+	if (tdata->thread_name != NULL) {
+		idalloctm(tsd_tsdn(tsd), tdata->thread_name, NULL, NULL, true,
+		    true);
+	}
+	ckh_delete(tsd, &tdata->bt2tctx);
+	idalloctm(tsd_tsdn(tsd), tdata, NULL, NULL, true, true);
+}
+
+static void
+prof_tdata_destroy(tsd_t *tsd, prof_tdata_t *tdata, bool even_if_attached) {
+	malloc_mutex_lock(tsd_tsdn(tsd), &tdatas_mtx);
+	prof_tdata_destroy_locked(tsd, tdata, even_if_attached);
+	malloc_mutex_unlock(tsd_tsdn(tsd), &tdatas_mtx);
+}
+
+void
+prof_tdata_detach(tsd_t *tsd, prof_tdata_t *tdata) {
+	bool destroy_tdata;
+
+	malloc_mutex_lock(tsd_tsdn(tsd), tdata->lock);
+	if (tdata->attached) {
+		destroy_tdata = prof_tdata_should_destroy(tsd_tsdn(tsd), tdata,
+		    true);
+		/*
+		 * Only detach if !destroy_tdata, because detaching would allow
+		 * another thread to win the race to destroy tdata.
+		 */
+		if (!destroy_tdata) {
+			tdata->attached = false;
+		}
+		tsd_prof_tdata_set(tsd, NULL);
+	} else {
+		destroy_tdata = false;
+	}
+	malloc_mutex_unlock(tsd_tsdn(tsd), tdata->lock);
+	if (destroy_tdata) {
+		prof_tdata_destroy(tsd, tdata, true);
+	}
+}
+
+static bool
+prof_tdata_expire(tsdn_t *tsdn, prof_tdata_t *tdata) {
+	bool destroy_tdata;
+
+	malloc_mutex_lock(tsdn, tdata->lock);
+	if (!tdata->expired) {
+		tdata->expired = true;
+		destroy_tdata = prof_tdata_should_destroy(tsdn, tdata, false);
+	} else {
+		destroy_tdata = false;
+	}
+	malloc_mutex_unlock(tsdn, tdata->lock);
+
+	return destroy_tdata;
+}
+
+static prof_tdata_t *
+prof_tdata_reset_iter(prof_tdata_tree_t *tdatas_ptr, prof_tdata_t *tdata,
+    void *arg) {
+	tsdn_t *tsdn = (tsdn_t *)arg;
+
+	return (prof_tdata_expire(tsdn, tdata) ? tdata : NULL);
+}
+
+void
+prof_reset(tsd_t *tsd, size_t lg_sample) {
+	prof_tdata_t *next;
+
+	assert(lg_sample < (sizeof(uint64_t) << 3));
+
+	malloc_mutex_lock(tsd_tsdn(tsd), &prof_dump_mtx);
+	malloc_mutex_lock(tsd_tsdn(tsd), &tdatas_mtx);
+
+	lg_prof_sample = lg_sample;
+	prof_unbias_map_init();
+
+	next = NULL;
+	do {
+		prof_tdata_t *to_destroy = tdata_tree_iter(&tdatas, next,
+		    prof_tdata_reset_iter, (void *)tsd);
+		if (to_destroy != NULL) {
+			next = tdata_tree_next(&tdatas, to_destroy);
+			prof_tdata_destroy_locked(tsd, to_destroy, false);
+		} else {
+			next = NULL;
+		}
+	} while (next != NULL);
+
+	malloc_mutex_unlock(tsd_tsdn(tsd), &tdatas_mtx);
+	malloc_mutex_unlock(tsd_tsdn(tsd), &prof_dump_mtx);
+}
+
+static bool
+prof_tctx_should_destroy(tsd_t *tsd, prof_tctx_t *tctx) {
+	malloc_mutex_assert_owner(tsd_tsdn(tsd), tctx->tdata->lock);
+
+	if (opt_prof_accum) {
+		return false;
+	}
+	if (tctx->cnts.curobjs != 0) {
+		return false;
+	}
+	if (tctx->prepared) {
+		return false;
+	}
+	if (tctx->recent_count != 0) {
+		return false;
+	}
+	return true;
+}
+
+static void
+prof_tctx_destroy(tsd_t *tsd, prof_tctx_t *tctx) {
+	malloc_mutex_assert_owner(tsd_tsdn(tsd), tctx->tdata->lock);
+
+	assert(tctx->cnts.curobjs == 0);
+	assert(tctx->cnts.curbytes == 0);
+	/*
+	 * These asserts are not correct -- see the comment about races in
+	 * prof.c
+	 *
+	 * assert(tctx->cnts.curobjs_shifted_unbiased == 0);
+	 * assert(tctx->cnts.curbytes_unbiased == 0);
+	 */
+	assert(!opt_prof_accum);
+	assert(tctx->cnts.accumobjs == 0);
+	assert(tctx->cnts.accumbytes == 0);
+	/*
+	 * These ones are, since accumbyte counts never go down.  Either
+	 * prof_accum is off (in which case these should never have changed from
+	 * their initial value of zero), or it's on (in which case we shouldn't
+	 * be destroying this tctx).
+	 */
+	assert(tctx->cnts.accumobjs_shifted_unbiased == 0);
+	assert(tctx->cnts.accumbytes_unbiased == 0);
+
+	prof_gctx_t *gctx = tctx->gctx;
+
+	{
+		prof_tdata_t *tdata = tctx->tdata;
+		tctx->tdata = NULL;
+		ckh_remove(tsd, &tdata->bt2tctx, &gctx->bt, NULL, NULL);
+		bool destroy_tdata = prof_tdata_should_destroy(tsd_tsdn(tsd),
+		    tdata, false);
+		malloc_mutex_unlock(tsd_tsdn(tsd), tdata->lock);
+		if (destroy_tdata) {
+			prof_tdata_destroy(tsd, tdata, false);
+		}
+	}
+
+	bool destroy_tctx, destroy_gctx;
+
+	malloc_mutex_lock(tsd_tsdn(tsd), gctx->lock);
+	switch (tctx->state) {
+	case prof_tctx_state_nominal:
+		tctx_tree_remove(&gctx->tctxs, tctx);
+		destroy_tctx = true;
+		if (prof_gctx_should_destroy(gctx)) {
+			/*
+			 * Increment gctx->nlimbo in order to keep another
+			 * thread from winning the race to destroy gctx while
+			 * this one has gctx->lock dropped.  Without this, it
+			 * would be possible for another thread to:
+			 *
+			 * 1) Sample an allocation associated with gctx.
+			 * 2) Deallocate the sampled object.
+			 * 3) Successfully prof_gctx_try_destroy(gctx).
+			 *
+			 * The result would be that gctx no longer exists by the
+			 * time this thread accesses it in
+			 * prof_gctx_try_destroy().
+			 */
+			gctx->nlimbo++;
+			destroy_gctx = true;
+		} else {
+			destroy_gctx = false;
+		}
+		break;
+	case prof_tctx_state_dumping:
+		/*
+		 * A dumping thread needs tctx to remain valid until dumping
+		 * has finished.  Change state such that the dumping thread will
+		 * complete destruction during a late dump iteration phase.
+		 */
+		tctx->state = prof_tctx_state_purgatory;
+		destroy_tctx = false;
+		destroy_gctx = false;
+		break;
+	default:
+		not_reached();
+		destroy_tctx = false;
+		destroy_gctx = false;
+	}
+	malloc_mutex_unlock(tsd_tsdn(tsd), gctx->lock);
+	if (destroy_gctx) {
+		prof_gctx_try_destroy(tsd, prof_tdata_get(tsd, false), gctx);
+	}
+	if (destroy_tctx) {
+		idalloctm(tsd_tsdn(tsd), tctx, NULL, NULL, true, true);
+	}
+}
+
+void
+prof_tctx_try_destroy(tsd_t *tsd, prof_tctx_t *tctx) {
+	malloc_mutex_assert_owner(tsd_tsdn(tsd), tctx->tdata->lock);
+	if (prof_tctx_should_destroy(tsd, tctx)) {
+		/* tctx->tdata->lock will be released in prof_tctx_destroy(). */
+		prof_tctx_destroy(tsd, tctx);
+	} else {
+		malloc_mutex_unlock(tsd_tsdn(tsd), tctx->tdata->lock);
+	}
+}
+
+/******************************************************************************/
diff --git a/deps/jemalloc/src/prof_log.c b/deps/jemalloc/src/prof_log.c
new file mode 100644
index 0000000..0632c3b
--- /dev/null
+++ b/deps/jemalloc/src/prof_log.c
@@ -0,0 +1,717 @@
+#include "jemalloc/internal/jemalloc_preamble.h"
+#include "jemalloc/internal/jemalloc_internal_includes.h"
+
+#include "jemalloc/internal/assert.h"
+#include "jemalloc/internal/buf_writer.h"
+#include "jemalloc/internal/ckh.h"
+#include "jemalloc/internal/emitter.h"
+#include "jemalloc/internal/hash.h"
+#include "jemalloc/internal/malloc_io.h"
+#include "jemalloc/internal/mutex.h"
+#include "jemalloc/internal/prof_data.h"
+#include "jemalloc/internal/prof_log.h"
+#include "jemalloc/internal/prof_sys.h"
+
+bool opt_prof_log = false;
+typedef enum prof_logging_state_e prof_logging_state_t;
+enum prof_logging_state_e {
+	prof_logging_state_stopped,
+	prof_logging_state_started,
+	prof_logging_state_dumping
+};
+
+/*
+ * - stopped: log_start never called, or previous log_stop has completed.
+ * - started: log_start called, log_stop not called yet. Allocations are logged.
+ * - dumping: log_stop called but not finished; samples are not logged anymore.
+ */
+prof_logging_state_t prof_logging_state = prof_logging_state_stopped;
+
+/* Used in unit tests. */
+static bool prof_log_dummy = false;
+
+/* Incremented for every log file that is output. */
+static uint64_t log_seq = 0;
+static char log_filename[
+    /* Minimize memory bloat for non-prof builds. */
+#ifdef JEMALLOC_PROF
+    PATH_MAX +
+#endif
+    1];
+
+/* Timestamp for most recent call to log_start(). */
+static nstime_t log_start_timestamp;
+
+/* Increment these when adding to the log_bt and log_thr linked lists. */
+static size_t log_bt_index = 0;
+static size_t log_thr_index = 0;
+
+/* Linked list node definitions. These are only used in this file. */
+typedef struct prof_bt_node_s prof_bt_node_t;
+
+struct prof_bt_node_s {
+	prof_bt_node_t *next;
+	size_t index;
+	prof_bt_t bt;
+	/* Variable size backtrace vector pointed to by bt. */
+	void *vec[1];
+};
+
+typedef struct prof_thr_node_s prof_thr_node_t;
+
+struct prof_thr_node_s {
+	prof_thr_node_t *next;
+	size_t index;
+	uint64_t thr_uid;
+	/* Variable size based on thr_name_sz. */
+	char name[1];
+};
+
+typedef struct prof_alloc_node_s prof_alloc_node_t;
+
+/* This is output when logging sampled allocations. */
+struct prof_alloc_node_s {
+	prof_alloc_node_t *next;
+	/* Indices into an array of thread data. */
+	size_t alloc_thr_ind;
+	size_t free_thr_ind;
+
+	/* Indices into an array of backtraces. */
+	size_t alloc_bt_ind;
+	size_t free_bt_ind;
+
+	uint64_t alloc_time_ns;
+	uint64_t free_time_ns;
+
+	size_t usize;
+};
+
+/*
+ * Created on the first call to prof_try_log and deleted on prof_log_stop.
+ * These are the backtraces and threads that have already been logged by an
+ * allocation.
+ */
+static bool log_tables_initialized = false;
+static ckh_t log_bt_node_set;
+static ckh_t log_thr_node_set;
+
+/* Store linked lists for logged data. */
+static prof_bt_node_t *log_bt_first = NULL;
+static prof_bt_node_t *log_bt_last = NULL;
+static prof_thr_node_t *log_thr_first = NULL;
+static prof_thr_node_t *log_thr_last = NULL;
+static prof_alloc_node_t *log_alloc_first = NULL;
+static prof_alloc_node_t *log_alloc_last = NULL;
+
+/* Protects the prof_logging_state and any log_{...} variable. */
+malloc_mutex_t log_mtx;
+
+/******************************************************************************/
+/*
+ * Function prototypes for static functions that are referenced prior to
+ * definition.
+ */
+
+/* Hashtable functions for log_bt_node_set and log_thr_node_set. */
+static void prof_thr_node_hash(const void *key, size_t r_hash[2]);
+static bool prof_thr_node_keycomp(const void *k1, const void *k2);
+static void prof_bt_node_hash(const void *key, size_t r_hash[2]);
+static bool prof_bt_node_keycomp(const void *k1, const void *k2);
+
+/******************************************************************************/
+
+static size_t
+prof_log_bt_index(tsd_t *tsd, prof_bt_t *bt) {
+	assert(prof_logging_state == prof_logging_state_started);
+	malloc_mutex_assert_owner(tsd_tsdn(tsd), &log_mtx);
+
+	prof_bt_node_t dummy_node;
+	dummy_node.bt = *bt;
+	prof_bt_node_t *node;
+
+	/* See if this backtrace is already cached in the table. */
+	if (ckh_search(&log_bt_node_set, (void *)(&dummy_node),
+	    (void **)(&node), NULL)) {
+		size_t sz = offsetof(prof_bt_node_t, vec) +
+			        (bt->len * sizeof(void *));
+		prof_bt_node_t *new_node = (prof_bt_node_t *)
+		    iallocztm(tsd_tsdn(tsd), sz, sz_size2index(sz), false, NULL,
+		    true, arena_get(TSDN_NULL, 0, true), true);
+		if (log_bt_first == NULL) {
+			log_bt_first = new_node;
+			log_bt_last = new_node;
+		} else {
+			log_bt_last->next = new_node;
+			log_bt_last = new_node;
+		}
+
+		new_node->next = NULL;
+		new_node->index = log_bt_index;
+		/*
+		 * Copy the backtrace: bt is inside a tdata or gctx, which
+		 * might die before prof_log_stop is called.
+		 */
+		new_node->bt.len = bt->len;
+		memcpy(new_node->vec, bt->vec, bt->len * sizeof(void *));
+		new_node->bt.vec = new_node->vec;
+
+		log_bt_index++;
+		ckh_insert(tsd, &log_bt_node_set, (void *)new_node, NULL);
+		return new_node->index;
+	} else {
+		return node->index;
+	}
+}
+
+static size_t
+prof_log_thr_index(tsd_t *tsd, uint64_t thr_uid, const char *name) {
+	assert(prof_logging_state == prof_logging_state_started);
+	malloc_mutex_assert_owner(tsd_tsdn(tsd), &log_mtx);
+
+	prof_thr_node_t dummy_node;
+	dummy_node.thr_uid = thr_uid;
+	prof_thr_node_t *node;
+
+	/* See if this thread is already cached in the table. */
+	if (ckh_search(&log_thr_node_set, (void *)(&dummy_node),
+	    (void **)(&node), NULL)) {
+		size_t sz = offsetof(prof_thr_node_t, name) + strlen(name) + 1;
+		prof_thr_node_t *new_node = (prof_thr_node_t *)
+		    iallocztm(tsd_tsdn(tsd), sz, sz_size2index(sz), false, NULL,
+		    true, arena_get(TSDN_NULL, 0, true), true);
+		if (log_thr_first == NULL) {
+			log_thr_first = new_node;
+			log_thr_last = new_node;
+		} else {
+			log_thr_last->next = new_node;
+			log_thr_last = new_node;
+		}
+
+		new_node->next = NULL;
+		new_node->index = log_thr_index;
+		new_node->thr_uid = thr_uid;
+		strcpy(new_node->name, name);
+
+		log_thr_index++;
+		ckh_insert(tsd, &log_thr_node_set, (void *)new_node, NULL);
+		return new_node->index;
+	} else {
+		return node->index;
+	}
+}
+
+JEMALLOC_COLD
+void
+prof_try_log(tsd_t *tsd, size_t usize, prof_info_t *prof_info) {
+	cassert(config_prof);
+	prof_tctx_t *tctx = prof_info->alloc_tctx;
+	malloc_mutex_assert_owner(tsd_tsdn(tsd), tctx->tdata->lock);
+
+	prof_tdata_t *cons_tdata = prof_tdata_get(tsd, false);
+	if (cons_tdata == NULL) {
+		/*
+		 * We decide not to log these allocations. cons_tdata will be
+		 * NULL only when the current thread is in a weird state (e.g.
+		 * it's being destroyed).
+		 */
+		return;
+	}
+
+	malloc_mutex_lock(tsd_tsdn(tsd), &log_mtx);
+
+	if (prof_logging_state != prof_logging_state_started) {
+		goto label_done;
+	}
+
+	if (!log_tables_initialized) {
+		bool err1 = ckh_new(tsd, &log_bt_node_set, PROF_CKH_MINITEMS,
+				prof_bt_node_hash, prof_bt_node_keycomp);
+		bool err2 = ckh_new(tsd, &log_thr_node_set, PROF_CKH_MINITEMS,
+				prof_thr_node_hash, prof_thr_node_keycomp);
+		if (err1 || err2) {
+			goto label_done;
+		}
+		log_tables_initialized = true;
+	}
+
+	nstime_t alloc_time = prof_info->alloc_time;
+	nstime_t free_time;
+	nstime_prof_init_update(&free_time);
+
+	size_t sz = sizeof(prof_alloc_node_t);
+	prof_alloc_node_t *new_node = (prof_alloc_node_t *)
+	    iallocztm(tsd_tsdn(tsd), sz, sz_size2index(sz), false, NULL, true,
+	    arena_get(TSDN_NULL, 0, true), true);
+
+	const char *prod_thr_name = (tctx->tdata->thread_name == NULL)?
+				        "" : tctx->tdata->thread_name;
+	const char *cons_thr_name = prof_thread_name_get(tsd);
+
+	prof_bt_t bt;
+	/* Initialize the backtrace, using the buffer in tdata to store it. */
+	bt_init(&bt, cons_tdata->vec);
+	prof_backtrace(tsd, &bt);
+	prof_bt_t *cons_bt = &bt;
+
+	/* We haven't destroyed tctx yet, so gctx should be good to read. */
+	prof_bt_t *prod_bt = &tctx->gctx->bt;
+
+	new_node->next = NULL;
+	new_node->alloc_thr_ind = prof_log_thr_index(tsd, tctx->tdata->thr_uid,
+				      prod_thr_name);
+	new_node->free_thr_ind = prof_log_thr_index(tsd, cons_tdata->thr_uid,
+				     cons_thr_name);
+	new_node->alloc_bt_ind = prof_log_bt_index(tsd, prod_bt);
+	new_node->free_bt_ind = prof_log_bt_index(tsd, cons_bt);
+	new_node->alloc_time_ns = nstime_ns(&alloc_time);
+	new_node->free_time_ns = nstime_ns(&free_time);
+	new_node->usize = usize;
+
+	if (log_alloc_first == NULL) {
+		log_alloc_first = new_node;
+		log_alloc_last = new_node;
+	} else {
+		log_alloc_last->next = new_node;
+		log_alloc_last = new_node;
+	}
+
+label_done:
+	malloc_mutex_unlock(tsd_tsdn(tsd), &log_mtx);
+}
+
+static void
+prof_bt_node_hash(const void *key, size_t r_hash[2]) {
+	const prof_bt_node_t *bt_node = (prof_bt_node_t *)key;
+	prof_bt_hash((void *)(&bt_node->bt), r_hash);
+}
+
+static bool
+prof_bt_node_keycomp(const void *k1, const void *k2) {
+	const prof_bt_node_t *bt_node1 = (prof_bt_node_t *)k1;
+	const prof_bt_node_t *bt_node2 = (prof_bt_node_t *)k2;
+	return prof_bt_keycomp((void *)(&bt_node1->bt),
+	    (void *)(&bt_node2->bt));
+}
+
+static void
+prof_thr_node_hash(const void *key, size_t r_hash[2]) {
+	const prof_thr_node_t *thr_node = (prof_thr_node_t *)key;
+	hash(&thr_node->thr_uid, sizeof(uint64_t), 0x94122f35U, r_hash);
+}
+
+static bool
+prof_thr_node_keycomp(const void *k1, const void *k2) {
+	const prof_thr_node_t *thr_node1 = (prof_thr_node_t *)k1;
+	const prof_thr_node_t *thr_node2 = (prof_thr_node_t *)k2;
+	return thr_node1->thr_uid == thr_node2->thr_uid;
+}
+
+/* Used in unit tests. */
+size_t
+prof_log_bt_count(void) {
+	cassert(config_prof);
+	size_t cnt = 0;
+	prof_bt_node_t *node = log_bt_first;
+	while (node != NULL) {
+		cnt++;
+		node = node->next;
+	}
+	return cnt;
+}
+
+/* Used in unit tests. */
+size_t
+prof_log_alloc_count(void) {
+	cassert(config_prof);
+	size_t cnt = 0;
+	prof_alloc_node_t *node = log_alloc_first;
+	while (node != NULL) {
+		cnt++;
+		node = node->next;
+	}
+	return cnt;
+}
+
+/* Used in unit tests. */
+size_t
+prof_log_thr_count(void) {
+	cassert(config_prof);
+	size_t cnt = 0;
+	prof_thr_node_t *node = log_thr_first;
+	while (node != NULL) {
+		cnt++;
+		node = node->next;
+	}
+	return cnt;
+}
+
+/* Used in unit tests. */
+bool
+prof_log_is_logging(void) {
+	cassert(config_prof);
+	return prof_logging_state == prof_logging_state_started;
+}
+
+/* Used in unit tests. */
+bool
+prof_log_rep_check(void) {
+	cassert(config_prof);
+	if (prof_logging_state == prof_logging_state_stopped
+	    && log_tables_initialized) {
+		return true;
+	}
+
+	if (log_bt_last != NULL && log_bt_last->next != NULL) {
+		return true;
+	}
+	if (log_thr_last != NULL && log_thr_last->next != NULL) {
+		return true;
+	}
+	if (log_alloc_last != NULL && log_alloc_last->next != NULL) {
+		return true;
+	}
+
+	size_t bt_count = prof_log_bt_count();
+	size_t thr_count = prof_log_thr_count();
+	size_t alloc_count = prof_log_alloc_count();
+
+
+	if (prof_logging_state == prof_logging_state_stopped) {
+		if (bt_count != 0 || thr_count != 0 || alloc_count || 0) {
+			return true;
+		}
+	}
+
+	prof_alloc_node_t *node = log_alloc_first;
+	while (node != NULL) {
+		if (node->alloc_bt_ind >= bt_count) {
+			return true;
+		}
+		if (node->free_bt_ind >= bt_count) {
+			return true;
+		}
+		if (node->alloc_thr_ind >= thr_count) {
+			return true;
+		}
+		if (node->free_thr_ind >= thr_count) {
+			return true;
+		}
+		if (node->alloc_time_ns > node->free_time_ns) {
+			return true;
+		}
+		node = node->next;
+	}
+
+	return false;
+}
+
+/* Used in unit tests. */
+void
+prof_log_dummy_set(bool new_value) {
+	cassert(config_prof);
+	prof_log_dummy = new_value;
+}
+
+/* Used as an atexit function to stop logging on exit. */
+static void
+prof_log_stop_final(void) {
+	tsd_t *tsd = tsd_fetch();
+	prof_log_stop(tsd_tsdn(tsd));
+}
+
+JEMALLOC_COLD
+bool
+prof_log_start(tsdn_t *tsdn, const char *filename) {
+	cassert(config_prof);
+
+	if (!opt_prof) {
+		return true;
+	}
+
+	bool ret = false;
+
+	malloc_mutex_lock(tsdn, &log_mtx);
+
+	static bool prof_log_atexit_called = false;
+	if (!prof_log_atexit_called) {
+		prof_log_atexit_called = true;
+		if (atexit(prof_log_stop_final) != 0) {
+			malloc_write("<jemalloc>: Error in atexit() "
+			    "for logging\n");
+			if (opt_abort) {
+				abort();
+			}
+			ret = true;
+			goto label_done;
+		}
+	}
+
+	if (prof_logging_state != prof_logging_state_stopped) {
+		ret = true;
+	} else if (filename == NULL) {
+		/* Make default name. */
+		prof_get_default_filename(tsdn, log_filename, log_seq);
+		log_seq++;
+		prof_logging_state = prof_logging_state_started;
+	} else if (strlen(filename) >= PROF_DUMP_FILENAME_LEN) {
+		ret = true;
+	} else {
+		strcpy(log_filename, filename);
+		prof_logging_state = prof_logging_state_started;
+	}
+
+	if (!ret) {
+		nstime_prof_init_update(&log_start_timestamp);
+	}
+label_done:
+	malloc_mutex_unlock(tsdn, &log_mtx);
+
+	return ret;
+}
+
+struct prof_emitter_cb_arg_s {
+	int fd;
+	ssize_t ret;
+};
+
+static void
+prof_emitter_write_cb(void *opaque, const char *to_write) {
+	struct prof_emitter_cb_arg_s *arg =
+	    (struct prof_emitter_cb_arg_s *)opaque;
+	size_t bytes = strlen(to_write);
+	if (prof_log_dummy) {
+		return;
+	}
+	arg->ret = malloc_write_fd(arg->fd, to_write, bytes);
+}
+
+/*
+ * prof_log_emit_{...} goes through the appropriate linked list, emitting each
+ * node to the json and deallocating it.
+ */
+static void
+prof_log_emit_threads(tsd_t *tsd, emitter_t *emitter) {
+	emitter_json_array_kv_begin(emitter, "threads");
+	prof_thr_node_t *thr_node = log_thr_first;
+	prof_thr_node_t *thr_old_node;
+	while (thr_node != NULL) {
+		emitter_json_object_begin(emitter);
+
+		emitter_json_kv(emitter, "thr_uid", emitter_type_uint64,
+		    &thr_node->thr_uid);
+
+		char *thr_name = thr_node->name;
+
+		emitter_json_kv(emitter, "thr_name", emitter_type_string,
+		    &thr_name);
+
+		emitter_json_object_end(emitter);
+		thr_old_node = thr_node;
+		thr_node = thr_node->next;
+		idalloctm(tsd_tsdn(tsd), thr_old_node, NULL, NULL, true, true);
+	}
+	emitter_json_array_end(emitter);
+}
+
+static void
+prof_log_emit_traces(tsd_t *tsd, emitter_t *emitter) {
+	emitter_json_array_kv_begin(emitter, "stack_traces");
+	prof_bt_node_t *bt_node = log_bt_first;
+	prof_bt_node_t *bt_old_node;
+	/*
+	 * Calculate how many hex digits we need: twice number of bytes, two for
+	 * "0x", and then one more for terminating '\0'.
+	 */
+	char buf[2 * sizeof(intptr_t) + 3];
+	size_t buf_sz = sizeof(buf);
+	while (bt_node != NULL) {
+		emitter_json_array_begin(emitter);
+		size_t i;
+		for (i = 0; i < bt_node->bt.len; i++) {
+			malloc_snprintf(buf, buf_sz, "%p", bt_node->bt.vec[i]);
+			char *trace_str = buf;
+			emitter_json_value(emitter, emitter_type_string,
+			    &trace_str);
+		}
+		emitter_json_array_end(emitter);
+
+		bt_old_node = bt_node;
+		bt_node = bt_node->next;
+		idalloctm(tsd_tsdn(tsd), bt_old_node, NULL, NULL, true, true);
+	}
+	emitter_json_array_end(emitter);
+}
+
+static void
+prof_log_emit_allocs(tsd_t *tsd, emitter_t *emitter) {
+	emitter_json_array_kv_begin(emitter, "allocations");
+	prof_alloc_node_t *alloc_node = log_alloc_first;
+	prof_alloc_node_t *alloc_old_node;
+	while (alloc_node != NULL) {
+		emitter_json_object_begin(emitter);
+
+		emitter_json_kv(emitter, "alloc_thread", emitter_type_size,
+		    &alloc_node->alloc_thr_ind);
+
+		emitter_json_kv(emitter, "free_thread", emitter_type_size,
+		    &alloc_node->free_thr_ind);
+
+		emitter_json_kv(emitter, "alloc_trace", emitter_type_size,
+		    &alloc_node->alloc_bt_ind);
+
+		emitter_json_kv(emitter, "free_trace", emitter_type_size,
+		    &alloc_node->free_bt_ind);
+
+		emitter_json_kv(emitter, "alloc_timestamp",
+		    emitter_type_uint64, &alloc_node->alloc_time_ns);
+
+		emitter_json_kv(emitter, "free_timestamp", emitter_type_uint64,
+		    &alloc_node->free_time_ns);
+
+		emitter_json_kv(emitter, "usize", emitter_type_uint64,
+		    &alloc_node->usize);
+
+		emitter_json_object_end(emitter);
+
+		alloc_old_node = alloc_node;
+		alloc_node = alloc_node->next;
+		idalloctm(tsd_tsdn(tsd), alloc_old_node, NULL, NULL, true,
+		    true);
+	}
+	emitter_json_array_end(emitter);
+}
+
+static void
+prof_log_emit_metadata(emitter_t *emitter) {
+	emitter_json_object_kv_begin(emitter, "info");
+
+	nstime_t now;
+
+	nstime_prof_init_update(&now);
+	uint64_t ns = nstime_ns(&now) - nstime_ns(&log_start_timestamp);
+	emitter_json_kv(emitter, "duration", emitter_type_uint64, &ns);
+
+	char *vers = JEMALLOC_VERSION;
+	emitter_json_kv(emitter, "version",
+	    emitter_type_string, &vers);
+
+	emitter_json_kv(emitter, "lg_sample_rate",
+	    emitter_type_int, &lg_prof_sample);
+
+	const char *res_type = prof_time_res_mode_names[opt_prof_time_res];
+	emitter_json_kv(emitter, "prof_time_resolution", emitter_type_string,
+	    &res_type);
+
+	int pid = prof_getpid();
+	emitter_json_kv(emitter, "pid", emitter_type_int, &pid);
+
+	emitter_json_object_end(emitter);
+}
+
+#define PROF_LOG_STOP_BUFSIZE PROF_DUMP_BUFSIZE
+JEMALLOC_COLD
+bool
+prof_log_stop(tsdn_t *tsdn) {
+	cassert(config_prof);
+	if (!opt_prof || !prof_booted) {
+		return true;
+	}
+
+	tsd_t *tsd = tsdn_tsd(tsdn);
+	malloc_mutex_lock(tsdn, &log_mtx);
+
+	if (prof_logging_state != prof_logging_state_started) {
+		malloc_mutex_unlock(tsdn, &log_mtx);
+		return true;
+	}
+
+	/*
+	 * Set the state to dumping. We'll set it to stopped when we're done.
+	 * Since other threads won't be able to start/stop/log when the state is
+	 * dumping, we don't have to hold the lock during the whole method.
+	 */
+	prof_logging_state = prof_logging_state_dumping;
+	malloc_mutex_unlock(tsdn, &log_mtx);
+
+
+	emitter_t emitter;
+
+	/* Create a file. */
+
+	int fd;
+	if (prof_log_dummy) {
+		fd = 0;
+	} else {
+		fd = creat(log_filename, 0644);
+	}
+
+	if (fd == -1) {
+		malloc_printf("<jemalloc>: creat() for log file \"%s\" "
+			      " failed with %d\n", log_filename, errno);
+		if (opt_abort) {
+			abort();
+		}
+		return true;
+	}
+
+	struct prof_emitter_cb_arg_s arg;
+	arg.fd = fd;
+
+	buf_writer_t buf_writer;
+	buf_writer_init(tsdn, &buf_writer, prof_emitter_write_cb, &arg, NULL,
+	    PROF_LOG_STOP_BUFSIZE);
+	emitter_init(&emitter, emitter_output_json_compact, buf_writer_cb,
+	    &buf_writer);
+
+	emitter_begin(&emitter);
+	prof_log_emit_metadata(&emitter);
+	prof_log_emit_threads(tsd, &emitter);
+	prof_log_emit_traces(tsd, &emitter);
+	prof_log_emit_allocs(tsd, &emitter);
+	emitter_end(&emitter);
+
+	buf_writer_terminate(tsdn, &buf_writer);
+
+	/* Reset global state. */
+	if (log_tables_initialized) {
+		ckh_delete(tsd, &log_bt_node_set);
+		ckh_delete(tsd, &log_thr_node_set);
+	}
+	log_tables_initialized = false;
+	log_bt_index = 0;
+	log_thr_index = 0;
+	log_bt_first = NULL;
+	log_bt_last = NULL;
+	log_thr_first = NULL;
+	log_thr_last = NULL;
+	log_alloc_first = NULL;
+	log_alloc_last = NULL;
+
+	malloc_mutex_lock(tsdn, &log_mtx);
+	prof_logging_state = prof_logging_state_stopped;
+	malloc_mutex_unlock(tsdn, &log_mtx);
+
+	if (prof_log_dummy) {
+		return false;
+	}
+	return close(fd) || arg.ret == -1;
+}
+#undef PROF_LOG_STOP_BUFSIZE
+
+JEMALLOC_COLD
+bool
+prof_log_init(tsd_t *tsd) {
+	cassert(config_prof);
+	if (malloc_mutex_init(&log_mtx, "prof_log",
+	    WITNESS_RANK_PROF_LOG, malloc_mutex_rank_exclusive)) {
+		return true;
+	}
+
+	if (opt_prof_log) {
+		prof_log_start(tsd_tsdn(tsd), NULL);
+	}
+
+	return false;
+}
+
+/******************************************************************************/
diff --git a/deps/jemalloc/src/prof_recent.c b/deps/jemalloc/src/prof_recent.c
new file mode 100644
index 0000000..834a944
--- /dev/null
+++ b/deps/jemalloc/src/prof_recent.c
@@ -0,0 +1,600 @@
+#include "jemalloc/internal/jemalloc_preamble.h"
+#include "jemalloc/internal/jemalloc_internal_includes.h"
+
+#include "jemalloc/internal/assert.h"
+#include "jemalloc/internal/buf_writer.h"
+#include "jemalloc/internal/emitter.h"
+#include "jemalloc/internal/prof_data.h"
+#include "jemalloc/internal/prof_recent.h"
+
+ssize_t opt_prof_recent_alloc_max = PROF_RECENT_ALLOC_MAX_DEFAULT;
+malloc_mutex_t prof_recent_alloc_mtx; /* Protects the fields below */
+static atomic_zd_t prof_recent_alloc_max;
+static ssize_t prof_recent_alloc_count = 0;
+prof_recent_list_t prof_recent_alloc_list;
+
+malloc_mutex_t prof_recent_dump_mtx; /* Protects dumping. */
+
+static void
+prof_recent_alloc_max_init() {
+	atomic_store_zd(&prof_recent_alloc_max, opt_prof_recent_alloc_max,
+	    ATOMIC_RELAXED);
+}
+
+static inline ssize_t
+prof_recent_alloc_max_get_no_lock() {
+	return atomic_load_zd(&prof_recent_alloc_max, ATOMIC_RELAXED);
+}
+
+static inline ssize_t
+prof_recent_alloc_max_get(tsd_t *tsd) {
+	malloc_mutex_assert_owner(tsd_tsdn(tsd), &prof_recent_alloc_mtx);
+	return prof_recent_alloc_max_get_no_lock();
+}
+
+static inline ssize_t
+prof_recent_alloc_max_update(tsd_t *tsd, ssize_t max) {
+	malloc_mutex_assert_owner(tsd_tsdn(tsd), &prof_recent_alloc_mtx);
+	ssize_t old_max = prof_recent_alloc_max_get(tsd);
+	atomic_store_zd(&prof_recent_alloc_max, max, ATOMIC_RELAXED);
+	return old_max;
+}
+
+static prof_recent_t *
+prof_recent_allocate_node(tsdn_t *tsdn) {
+	return (prof_recent_t *)iallocztm(tsdn, sizeof(prof_recent_t),
+	    sz_size2index(sizeof(prof_recent_t)), false, NULL, true,
+	    arena_get(tsdn, 0, false), true);
+}
+
+static void
+prof_recent_free_node(tsdn_t *tsdn, prof_recent_t *node) {
+	assert(node != NULL);
+	assert(isalloc(tsdn, node) == sz_s2u(sizeof(prof_recent_t)));
+	idalloctm(tsdn, node, NULL, NULL, true, true);
+}
+
+static inline void
+increment_recent_count(tsd_t *tsd, prof_tctx_t *tctx) {
+	malloc_mutex_assert_owner(tsd_tsdn(tsd), tctx->tdata->lock);
+	++tctx->recent_count;
+	assert(tctx->recent_count > 0);
+}
+
+bool
+prof_recent_alloc_prepare(tsd_t *tsd, prof_tctx_t *tctx) {
+	cassert(config_prof);
+	assert(opt_prof && prof_booted);
+	malloc_mutex_assert_owner(tsd_tsdn(tsd), tctx->tdata->lock);
+	malloc_mutex_assert_not_owner(tsd_tsdn(tsd), &prof_recent_alloc_mtx);
+
+	/*
+	 * Check whether last-N mode is turned on without trying to acquire the
+	 * lock, so as to optimize for the following two scenarios:
+	 * (1) Last-N mode is switched off;
+	 * (2) Dumping, during which last-N mode is temporarily turned off so
+	 *     as not to block sampled allocations.
+	 */
+	if (prof_recent_alloc_max_get_no_lock() == 0) {
+		return false;
+	}
+
+	/*
+	 * Increment recent_count to hold the tctx so that it won't be gone
+	 * even after tctx->tdata->lock is released.  This acts as a
+	 * "placeholder"; the real recording of the allocation requires a lock
+	 * on prof_recent_alloc_mtx and is done in prof_recent_alloc (when
+	 * tctx->tdata->lock has been released).
+	 */
+	increment_recent_count(tsd, tctx);
+	return true;
+}
+
+static void
+decrement_recent_count(tsd_t *tsd, prof_tctx_t *tctx) {
+	malloc_mutex_assert_not_owner(tsd_tsdn(tsd), &prof_recent_alloc_mtx);
+	assert(tctx != NULL);
+	malloc_mutex_lock(tsd_tsdn(tsd), tctx->tdata->lock);
+	assert(tctx->recent_count > 0);
+	--tctx->recent_count;
+	prof_tctx_try_destroy(tsd, tctx);
+}
+
+static inline edata_t *
+prof_recent_alloc_edata_get_no_lock(const prof_recent_t *n) {
+	return (edata_t *)atomic_load_p(&n->alloc_edata, ATOMIC_ACQUIRE);
+}
+
+edata_t *
+prof_recent_alloc_edata_get_no_lock_test(const prof_recent_t *n) {
+	cassert(config_prof);
+	return prof_recent_alloc_edata_get_no_lock(n);
+}
+
+static inline edata_t *
+prof_recent_alloc_edata_get(tsd_t *tsd, const prof_recent_t *n) {
+	malloc_mutex_assert_owner(tsd_tsdn(tsd), &prof_recent_alloc_mtx);
+	return prof_recent_alloc_edata_get_no_lock(n);
+}
+
+static void
+prof_recent_alloc_edata_set(tsd_t *tsd, prof_recent_t *n, edata_t *edata) {
+	malloc_mutex_assert_owner(tsd_tsdn(tsd), &prof_recent_alloc_mtx);
+	atomic_store_p(&n->alloc_edata, edata, ATOMIC_RELEASE);
+}
+
+void
+edata_prof_recent_alloc_init(edata_t *edata) {
+	cassert(config_prof);
+	edata_prof_recent_alloc_set_dont_call_directly(edata, NULL);
+}
+
+static inline prof_recent_t *
+edata_prof_recent_alloc_get_no_lock(const edata_t *edata) {
+	cassert(config_prof);
+	return edata_prof_recent_alloc_get_dont_call_directly(edata);
+}
+
+prof_recent_t *
+edata_prof_recent_alloc_get_no_lock_test(const edata_t *edata) {
+	cassert(config_prof);
+	return edata_prof_recent_alloc_get_no_lock(edata);
+}
+
+static inline prof_recent_t *
+edata_prof_recent_alloc_get(tsd_t *tsd, const edata_t *edata) {
+	malloc_mutex_assert_owner(tsd_tsdn(tsd), &prof_recent_alloc_mtx);
+	prof_recent_t *recent_alloc =
+	    edata_prof_recent_alloc_get_no_lock(edata);
+	assert(recent_alloc == NULL ||
+	    prof_recent_alloc_edata_get(tsd, recent_alloc) == edata);
+	return recent_alloc;
+}
+
+static prof_recent_t *
+edata_prof_recent_alloc_update_internal(tsd_t *tsd, edata_t *edata,
+    prof_recent_t *recent_alloc) {
+	malloc_mutex_assert_owner(tsd_tsdn(tsd), &prof_recent_alloc_mtx);
+	prof_recent_t *old_recent_alloc =
+	    edata_prof_recent_alloc_get(tsd, edata);
+	edata_prof_recent_alloc_set_dont_call_directly(edata, recent_alloc);
+	return old_recent_alloc;
+}
+
+static void
+edata_prof_recent_alloc_set(tsd_t *tsd, edata_t *edata,
+    prof_recent_t *recent_alloc) {
+	malloc_mutex_assert_owner(tsd_tsdn(tsd), &prof_recent_alloc_mtx);
+	assert(recent_alloc != NULL);
+	prof_recent_t *old_recent_alloc =
+	    edata_prof_recent_alloc_update_internal(tsd, edata, recent_alloc);
+	assert(old_recent_alloc == NULL);
+	prof_recent_alloc_edata_set(tsd, recent_alloc, edata);
+}
+
+static void
+edata_prof_recent_alloc_reset(tsd_t *tsd, edata_t *edata,
+    prof_recent_t *recent_alloc) {
+	malloc_mutex_assert_owner(tsd_tsdn(tsd), &prof_recent_alloc_mtx);
+	assert(recent_alloc != NULL);
+	prof_recent_t *old_recent_alloc =
+	    edata_prof_recent_alloc_update_internal(tsd, edata, NULL);
+	assert(old_recent_alloc == recent_alloc);
+	assert(edata == prof_recent_alloc_edata_get(tsd, recent_alloc));
+	prof_recent_alloc_edata_set(tsd, recent_alloc, NULL);
+}
+
+/*
+ * This function should be called right before an allocation is released, so
+ * that the associated recent allocation record can contain the following
+ * information:
+ * (1) The allocation is released;
+ * (2) The time of the deallocation; and
+ * (3) The prof_tctx associated with the deallocation.
+ */
+void
+prof_recent_alloc_reset(tsd_t *tsd, edata_t *edata) {
+	cassert(config_prof);
+	/*
+	 * Check whether the recent allocation record still exists without
+	 * trying to acquire the lock.
+	 */
+	if (edata_prof_recent_alloc_get_no_lock(edata) == NULL) {
+		return;
+	}
+
+	prof_tctx_t *dalloc_tctx = prof_tctx_create(tsd);
+	/*
+	 * In case dalloc_tctx is NULL, e.g. due to OOM, we will not record the
+	 * deallocation time / tctx, which is handled later, after we check
+	 * again when holding the lock.
+	 */
+
+	if (dalloc_tctx != NULL) {
+		malloc_mutex_lock(tsd_tsdn(tsd), dalloc_tctx->tdata->lock);
+		increment_recent_count(tsd, dalloc_tctx);
+		dalloc_tctx->prepared = false;
+		malloc_mutex_unlock(tsd_tsdn(tsd), dalloc_tctx->tdata->lock);
+	}
+
+	malloc_mutex_lock(tsd_tsdn(tsd), &prof_recent_alloc_mtx);
+	/* Check again after acquiring the lock.  */
+	prof_recent_t *recent = edata_prof_recent_alloc_get(tsd, edata);
+	if (recent != NULL) {
+		assert(nstime_equals_zero(&recent->dalloc_time));
+		assert(recent->dalloc_tctx == NULL);
+		if (dalloc_tctx != NULL) {
+			nstime_prof_update(&recent->dalloc_time);
+			recent->dalloc_tctx = dalloc_tctx;
+			dalloc_tctx = NULL;
+		}
+		edata_prof_recent_alloc_reset(tsd, edata, recent);
+	}
+	malloc_mutex_unlock(tsd_tsdn(tsd), &prof_recent_alloc_mtx);
+
+	if (dalloc_tctx != NULL) {
+		/* We lost the rase - the allocation record was just gone. */
+		decrement_recent_count(tsd, dalloc_tctx);
+	}
+}
+
+static void
+prof_recent_alloc_evict_edata(tsd_t *tsd, prof_recent_t *recent_alloc) {
+	malloc_mutex_assert_owner(tsd_tsdn(tsd), &prof_recent_alloc_mtx);
+	edata_t *edata = prof_recent_alloc_edata_get(tsd, recent_alloc);
+	if (edata != NULL) {
+		edata_prof_recent_alloc_reset(tsd, edata, recent_alloc);
+	}
+}
+
+static bool
+prof_recent_alloc_is_empty(tsd_t *tsd) {
+	malloc_mutex_assert_owner(tsd_tsdn(tsd), &prof_recent_alloc_mtx);
+	if (ql_empty(&prof_recent_alloc_list)) {
+		assert(prof_recent_alloc_count == 0);
+		return true;
+	} else {
+		assert(prof_recent_alloc_count > 0);
+		return false;
+	}
+}
+
+static void
+prof_recent_alloc_assert_count(tsd_t *tsd) {
+	malloc_mutex_assert_owner(tsd_tsdn(tsd), &prof_recent_alloc_mtx);
+	if (!config_debug) {
+		return;
+	}
+	ssize_t count = 0;
+	prof_recent_t *n;
+	ql_foreach(n, &prof_recent_alloc_list, link) {
+		++count;
+	}
+	assert(count == prof_recent_alloc_count);
+	assert(prof_recent_alloc_max_get(tsd) == -1 ||
+	    count <= prof_recent_alloc_max_get(tsd));
+}
+
+void
+prof_recent_alloc(tsd_t *tsd, edata_t *edata, size_t size, size_t usize) {
+	cassert(config_prof);
+	assert(edata != NULL);
+	prof_tctx_t *tctx = edata_prof_tctx_get(edata);
+
+	malloc_mutex_assert_not_owner(tsd_tsdn(tsd), tctx->tdata->lock);
+	malloc_mutex_lock(tsd_tsdn(tsd), &prof_recent_alloc_mtx);
+	prof_recent_alloc_assert_count(tsd);
+
+	/*
+	 * Reserve a new prof_recent_t node if needed.  If needed, we release
+	 * the prof_recent_alloc_mtx lock and allocate.  Then, rather than
+	 * immediately checking for OOM, we regain the lock and try to make use
+	 * of the reserve node if needed.  There are six scenarios:
+	 *
+	 *          \ now | no need | need but OOMed | need and allocated
+	 *     later \    |         |                |
+	 *    ------------------------------------------------------------
+	 *     no need    |   (1)   |      (2)       |         (3)
+	 *    ------------------------------------------------------------
+	 *     need       |   (4)   |      (5)       |         (6)
+	 *
+	 * First, "(4)" never happens, because we don't release the lock in the
+	 * middle if there's no need for a new node; in such cases "(1)" always
+	 * takes place, which is trivial.
+	 *
+	 * Out of the remaining four scenarios, "(6)" is the common case and is
+	 * trivial.  "(5)" is also trivial, in which case we'll rollback the
+	 * effect of prof_recent_alloc_prepare() as expected.
+	 *
+	 * "(2)" / "(3)" occurs when the need for a new node is gone after we
+	 * regain the lock.  If the new node is successfully allocated, i.e. in
+	 * the case of "(3)", we'll release it in the end; otherwise, i.e. in
+	 * the case of "(2)", we do nothing - we're lucky that the OOM ends up
+	 * doing no harm at all.
+	 *
+	 * Therefore, the only performance cost of the "release lock" ->
+	 * "allocate" -> "regain lock" design is the "(3)" case, but it happens
+	 * very rarely, so the cost is relatively small compared to the gain of
+	 * not having to have the lock order of prof_recent_alloc_mtx above all
+	 * the allocation locks.
+	 */
+	prof_recent_t *reserve = NULL;
+	if (prof_recent_alloc_max_get(tsd) == -1 ||
+	    prof_recent_alloc_count < prof_recent_alloc_max_get(tsd)) {
+		assert(prof_recent_alloc_max_get(tsd) != 0);
+		malloc_mutex_unlock(tsd_tsdn(tsd), &prof_recent_alloc_mtx);
+		reserve = prof_recent_allocate_node(tsd_tsdn(tsd));
+		malloc_mutex_lock(tsd_tsdn(tsd), &prof_recent_alloc_mtx);
+		prof_recent_alloc_assert_count(tsd);
+	}
+
+	if (prof_recent_alloc_max_get(tsd) == 0) {
+		assert(prof_recent_alloc_is_empty(tsd));
+		goto label_rollback;
+	}
+
+	prof_tctx_t *old_alloc_tctx, *old_dalloc_tctx;
+	if (prof_recent_alloc_count == prof_recent_alloc_max_get(tsd)) {
+		/* If upper limit is reached, rotate the head. */
+		assert(prof_recent_alloc_max_get(tsd) != -1);
+		assert(!prof_recent_alloc_is_empty(tsd));
+		prof_recent_t *head = ql_first(&prof_recent_alloc_list);
+		old_alloc_tctx = head->alloc_tctx;
+		assert(old_alloc_tctx != NULL);
+		old_dalloc_tctx = head->dalloc_tctx;
+		prof_recent_alloc_evict_edata(tsd, head);
+		ql_rotate(&prof_recent_alloc_list, link);
+	} else {
+		/* Otherwise make use of the new node. */
+		assert(prof_recent_alloc_max_get(tsd) == -1 ||
+		    prof_recent_alloc_count < prof_recent_alloc_max_get(tsd));
+		if (reserve == NULL) {
+			goto label_rollback;
+		}
+		ql_elm_new(reserve, link);
+		ql_tail_insert(&prof_recent_alloc_list, reserve, link);
+		reserve = NULL;
+		old_alloc_tctx = NULL;
+		old_dalloc_tctx = NULL;
+		++prof_recent_alloc_count;
+	}
+
+	/* Fill content into the tail node. */
+	prof_recent_t *tail = ql_last(&prof_recent_alloc_list, link);
+	assert(tail != NULL);
+	tail->size = size;
+	tail->usize = usize;
+	nstime_copy(&tail->alloc_time, edata_prof_alloc_time_get(edata));
+	tail->alloc_tctx = tctx;
+	nstime_init_zero(&tail->dalloc_time);
+	tail->dalloc_tctx = NULL;
+	edata_prof_recent_alloc_set(tsd, edata, tail);
+
+	assert(!prof_recent_alloc_is_empty(tsd));
+	prof_recent_alloc_assert_count(tsd);
+	malloc_mutex_unlock(tsd_tsdn(tsd), &prof_recent_alloc_mtx);
+
+	if (reserve != NULL) {
+		prof_recent_free_node(tsd_tsdn(tsd), reserve);
+	}
+
+	/*
+	 * Asynchronously handle the tctx of the old node, so that there's no
+	 * simultaneous holdings of prof_recent_alloc_mtx and tdata->lock.
+	 * In the worst case this may delay the tctx release but it's better
+	 * than holding prof_recent_alloc_mtx for longer.
+	 */
+	if (old_alloc_tctx != NULL) {
+		decrement_recent_count(tsd, old_alloc_tctx);
+	}
+	if (old_dalloc_tctx != NULL) {
+		decrement_recent_count(tsd, old_dalloc_tctx);
+	}
+	return;
+
+label_rollback:
+	assert(edata_prof_recent_alloc_get(tsd, edata) == NULL);
+	prof_recent_alloc_assert_count(tsd);
+	malloc_mutex_unlock(tsd_tsdn(tsd), &prof_recent_alloc_mtx);
+	if (reserve != NULL) {
+		prof_recent_free_node(tsd_tsdn(tsd), reserve);
+	}
+	decrement_recent_count(tsd, tctx);
+}
+
+ssize_t
+prof_recent_alloc_max_ctl_read() {
+	cassert(config_prof);
+	/* Don't bother to acquire the lock. */
+	return prof_recent_alloc_max_get_no_lock();
+}
+
+static void
+prof_recent_alloc_restore_locked(tsd_t *tsd, prof_recent_list_t *to_delete) {
+	malloc_mutex_assert_owner(tsd_tsdn(tsd), &prof_recent_alloc_mtx);
+	ssize_t max = prof_recent_alloc_max_get(tsd);
+	if (max == -1 || prof_recent_alloc_count <= max) {
+		/* Easy case - no need to alter the list. */
+		ql_new(to_delete);
+		prof_recent_alloc_assert_count(tsd);
+		return;
+	}
+
+	prof_recent_t *node;
+	ql_foreach(node, &prof_recent_alloc_list, link) {
+		if (prof_recent_alloc_count == max) {
+			break;
+		}
+		prof_recent_alloc_evict_edata(tsd, node);
+		--prof_recent_alloc_count;
+	}
+	assert(prof_recent_alloc_count == max);
+
+	ql_move(to_delete, &prof_recent_alloc_list);
+	if (max == 0) {
+		assert(node == NULL);
+	} else {
+		assert(node != NULL);
+		ql_split(to_delete, node, &prof_recent_alloc_list, link);
+	}
+	assert(!ql_empty(to_delete));
+	prof_recent_alloc_assert_count(tsd);
+}
+
+static void
+prof_recent_alloc_async_cleanup(tsd_t *tsd, prof_recent_list_t *to_delete) {
+	malloc_mutex_assert_not_owner(tsd_tsdn(tsd), &prof_recent_dump_mtx);
+	malloc_mutex_assert_not_owner(tsd_tsdn(tsd), &prof_recent_alloc_mtx);
+	while (!ql_empty(to_delete)) {
+		prof_recent_t *node = ql_first(to_delete);
+		ql_remove(to_delete, node, link);
+		decrement_recent_count(tsd, node->alloc_tctx);
+		if (node->dalloc_tctx != NULL) {
+			decrement_recent_count(tsd, node->dalloc_tctx);
+		}
+		prof_recent_free_node(tsd_tsdn(tsd), node);
+	}
+}
+
+ssize_t
+prof_recent_alloc_max_ctl_write(tsd_t *tsd, ssize_t max) {
+	cassert(config_prof);
+	assert(max >= -1);
+	malloc_mutex_lock(tsd_tsdn(tsd), &prof_recent_alloc_mtx);
+	prof_recent_alloc_assert_count(tsd);
+	const ssize_t old_max = prof_recent_alloc_max_update(tsd, max);
+	prof_recent_list_t to_delete;
+	prof_recent_alloc_restore_locked(tsd, &to_delete);
+	malloc_mutex_unlock(tsd_tsdn(tsd), &prof_recent_alloc_mtx);
+	prof_recent_alloc_async_cleanup(tsd, &to_delete);
+	return old_max;
+}
+
+static void
+prof_recent_alloc_dump_bt(emitter_t *emitter, prof_tctx_t *tctx) {
+	char bt_buf[2 * sizeof(intptr_t) + 3];
+	char *s = bt_buf;
+	assert(tctx != NULL);
+	prof_bt_t *bt = &tctx->gctx->bt;
+	for (size_t i = 0; i < bt->len; ++i) {
+		malloc_snprintf(bt_buf, sizeof(bt_buf), "%p", bt->vec[i]);
+		emitter_json_value(emitter, emitter_type_string, &s);
+	}
+}
+
+static void
+prof_recent_alloc_dump_node(emitter_t *emitter, prof_recent_t *node) {
+	emitter_json_object_begin(emitter);
+
+	emitter_json_kv(emitter, "size", emitter_type_size, &node->size);
+	emitter_json_kv(emitter, "usize", emitter_type_size, &node->usize);
+	bool released = prof_recent_alloc_edata_get_no_lock(node) == NULL;
+	emitter_json_kv(emitter, "released", emitter_type_bool, &released);
+
+	emitter_json_kv(emitter, "alloc_thread_uid", emitter_type_uint64,
+	    &node->alloc_tctx->thr_uid);
+	prof_tdata_t *alloc_tdata = node->alloc_tctx->tdata;
+	assert(alloc_tdata != NULL);
+	if (alloc_tdata->thread_name != NULL) {
+		emitter_json_kv(emitter, "alloc_thread_name",
+		    emitter_type_string, &alloc_tdata->thread_name);
+	}
+	uint64_t alloc_time_ns = nstime_ns(&node->alloc_time);
+	emitter_json_kv(emitter, "alloc_time", emitter_type_uint64,
+	    &alloc_time_ns);
+	emitter_json_array_kv_begin(emitter, "alloc_trace");
+	prof_recent_alloc_dump_bt(emitter, node->alloc_tctx);
+	emitter_json_array_end(emitter);
+
+	if (released && node->dalloc_tctx != NULL) {
+		emitter_json_kv(emitter, "dalloc_thread_uid",
+		    emitter_type_uint64, &node->dalloc_tctx->thr_uid);
+		prof_tdata_t *dalloc_tdata = node->dalloc_tctx->tdata;
+		assert(dalloc_tdata != NULL);
+		if (dalloc_tdata->thread_name != NULL) {
+			emitter_json_kv(emitter, "dalloc_thread_name",
+			    emitter_type_string, &dalloc_tdata->thread_name);
+		}
+		assert(!nstime_equals_zero(&node->dalloc_time));
+		uint64_t dalloc_time_ns = nstime_ns(&node->dalloc_time);
+		emitter_json_kv(emitter, "dalloc_time", emitter_type_uint64,
+		    &dalloc_time_ns);
+		emitter_json_array_kv_begin(emitter, "dalloc_trace");
+		prof_recent_alloc_dump_bt(emitter, node->dalloc_tctx);
+		emitter_json_array_end(emitter);
+	}
+
+	emitter_json_object_end(emitter);
+}
+
+#define PROF_RECENT_PRINT_BUFSIZE 65536
+JEMALLOC_COLD
+void
+prof_recent_alloc_dump(tsd_t *tsd, write_cb_t *write_cb, void *cbopaque) {
+	cassert(config_prof);
+	malloc_mutex_lock(tsd_tsdn(tsd), &prof_recent_dump_mtx);
+	buf_writer_t buf_writer;
+	buf_writer_init(tsd_tsdn(tsd), &buf_writer, write_cb, cbopaque, NULL,
+	    PROF_RECENT_PRINT_BUFSIZE);
+	emitter_t emitter;
+	emitter_init(&emitter, emitter_output_json_compact, buf_writer_cb,
+	    &buf_writer);
+	prof_recent_list_t temp_list;
+
+	malloc_mutex_lock(tsd_tsdn(tsd), &prof_recent_alloc_mtx);
+	prof_recent_alloc_assert_count(tsd);
+	ssize_t dump_max = prof_recent_alloc_max_get(tsd);
+	ql_move(&temp_list, &prof_recent_alloc_list);
+	ssize_t dump_count = prof_recent_alloc_count;
+	prof_recent_alloc_count = 0;
+	prof_recent_alloc_assert_count(tsd);
+	malloc_mutex_unlock(tsd_tsdn(tsd), &prof_recent_alloc_mtx);
+
+	emitter_begin(&emitter);
+	uint64_t sample_interval = (uint64_t)1U << lg_prof_sample;
+	emitter_json_kv(&emitter, "sample_interval", emitter_type_uint64,
+	    &sample_interval);
+	emitter_json_kv(&emitter, "recent_alloc_max", emitter_type_ssize,
+	    &dump_max);
+	emitter_json_array_kv_begin(&emitter, "recent_alloc");
+	prof_recent_t *node;
+	ql_foreach(node, &temp_list, link) {
+		prof_recent_alloc_dump_node(&emitter, node);
+	}
+	emitter_json_array_end(&emitter);
+	emitter_end(&emitter);
+
+	malloc_mutex_lock(tsd_tsdn(tsd), &prof_recent_alloc_mtx);
+	prof_recent_alloc_assert_count(tsd);
+	ql_concat(&temp_list, &prof_recent_alloc_list, link);
+	ql_move(&prof_recent_alloc_list, &temp_list);
+	prof_recent_alloc_count += dump_count;
+	prof_recent_alloc_restore_locked(tsd, &temp_list);
+	malloc_mutex_unlock(tsd_tsdn(tsd), &prof_recent_alloc_mtx);
+
+	buf_writer_terminate(tsd_tsdn(tsd), &buf_writer);
+	malloc_mutex_unlock(tsd_tsdn(tsd), &prof_recent_dump_mtx);
+
+	prof_recent_alloc_async_cleanup(tsd, &temp_list);
+}
+#undef PROF_RECENT_PRINT_BUFSIZE
+
+bool
+prof_recent_init() {
+	cassert(config_prof);
+	prof_recent_alloc_max_init();
+
+	if (malloc_mutex_init(&prof_recent_alloc_mtx, "prof_recent_alloc",
+	    WITNESS_RANK_PROF_RECENT_ALLOC, malloc_mutex_rank_exclusive)) {
+		return true;
+	}
+
+	if (malloc_mutex_init(&prof_recent_dump_mtx, "prof_recent_dump",
+	    WITNESS_RANK_PROF_RECENT_DUMP, malloc_mutex_rank_exclusive)) {
+		return true;
+	}
+
+	ql_new(&prof_recent_alloc_list);
+
+	return false;
+}
diff --git a/deps/jemalloc/src/prof_stats.c b/deps/jemalloc/src/prof_stats.c
new file mode 100644
index 0000000..5d1a506
--- /dev/null
+++ b/deps/jemalloc/src/prof_stats.c
@@ -0,0 +1,57 @@
+#include "jemalloc/internal/jemalloc_preamble.h"
+#include "jemalloc/internal/jemalloc_internal_includes.h"
+
+#include "jemalloc/internal/prof_stats.h"
+
+bool opt_prof_stats = false;
+malloc_mutex_t prof_stats_mtx;
+static prof_stats_t prof_stats_live[PROF_SC_NSIZES];
+static prof_stats_t prof_stats_accum[PROF_SC_NSIZES];
+
+static void
+prof_stats_enter(tsd_t *tsd, szind_t ind) {
+	assert(opt_prof && opt_prof_stats);
+	assert(ind < SC_NSIZES);
+	malloc_mutex_lock(tsd_tsdn(tsd), &prof_stats_mtx);
+}
+
+static void
+prof_stats_leave(tsd_t *tsd) {
+	malloc_mutex_unlock(tsd_tsdn(tsd), &prof_stats_mtx);
+}
+
+void
+prof_stats_inc(tsd_t *tsd, szind_t ind, size_t size) {
+	cassert(config_prof);
+	prof_stats_enter(tsd, ind);
+	prof_stats_live[ind].req_sum += size;
+	prof_stats_live[ind].count++;
+	prof_stats_accum[ind].req_sum += size;
+	prof_stats_accum[ind].count++;
+	prof_stats_leave(tsd);
+}
+
+void
+prof_stats_dec(tsd_t *tsd, szind_t ind, size_t size) {
+	cassert(config_prof);
+	prof_stats_enter(tsd, ind);
+	prof_stats_live[ind].req_sum -= size;
+	prof_stats_live[ind].count--;
+	prof_stats_leave(tsd);
+}
+
+void
+prof_stats_get_live(tsd_t *tsd, szind_t ind, prof_stats_t *stats) {
+	cassert(config_prof);
+	prof_stats_enter(tsd, ind);
+	memcpy(stats, &prof_stats_live[ind], sizeof(prof_stats_t));
+	prof_stats_leave(tsd);
+}
+
+void
+prof_stats_get_accum(tsd_t *tsd, szind_t ind, prof_stats_t *stats) {
+	cassert(config_prof);
+	prof_stats_enter(tsd, ind);
+	memcpy(stats, &prof_stats_accum[ind], sizeof(prof_stats_t));
+	prof_stats_leave(tsd);
+}
diff --git a/deps/jemalloc/src/prof_sys.c b/deps/jemalloc/src/prof_sys.c
new file mode 100644
index 0000000..b5f1f5b
--- /dev/null
+++ b/deps/jemalloc/src/prof_sys.c
@@ -0,0 +1,669 @@
+#define JEMALLOC_PROF_SYS_C_
+#include "jemalloc/internal/jemalloc_preamble.h"
+#include "jemalloc/internal/jemalloc_internal_includes.h"
+
+#include "jemalloc/internal/buf_writer.h"
+#include "jemalloc/internal/ctl.h"
+#include "jemalloc/internal/prof_data.h"
+#include "jemalloc/internal/prof_sys.h"
+
+#ifdef JEMALLOC_PROF_LIBUNWIND
+#define UNW_LOCAL_ONLY
+#include <libunwind.h>
+#endif
+
+#ifdef JEMALLOC_PROF_LIBGCC
+/*
+ * We have a circular dependency -- jemalloc_internal.h tells us if we should
+ * use libgcc's unwinding functionality, but after we've included that, we've
+ * already hooked _Unwind_Backtrace.  We'll temporarily disable hooking.
+ */
+#undef _Unwind_Backtrace
+#include <unwind.h>
+#define _Unwind_Backtrace JEMALLOC_TEST_HOOK(_Unwind_Backtrace, test_hooks_libc_hook)
+#endif
+
+/******************************************************************************/
+
+malloc_mutex_t prof_dump_filename_mtx;
+
+bool prof_do_mock = false;
+
+static uint64_t prof_dump_seq;
+static uint64_t prof_dump_iseq;
+static uint64_t prof_dump_mseq;
+static uint64_t prof_dump_useq;
+
+static char *prof_prefix = NULL;
+
+/* The fallback allocator profiling functionality will use. */
+base_t *prof_base;
+
+void
+bt_init(prof_bt_t *bt, void **vec) {
+	cassert(config_prof);
+
+	bt->vec = vec;
+	bt->len = 0;
+}
+
+#ifdef JEMALLOC_PROF_LIBUNWIND
+static void
+prof_backtrace_impl(void **vec, unsigned *len, unsigned max_len) {
+	int nframes;
+
+	cassert(config_prof);
+	assert(*len == 0);
+	assert(vec != NULL);
+	assert(max_len == PROF_BT_MAX);
+
+	nframes = unw_backtrace(vec, PROF_BT_MAX);
+	if (nframes <= 0) {
+		return;
+	}
+	*len = nframes;
+}
+#elif (defined(JEMALLOC_PROF_LIBGCC))
+static _Unwind_Reason_Code
+prof_unwind_init_callback(struct _Unwind_Context *context, void *arg) {
+	cassert(config_prof);
+
+	return _URC_NO_REASON;
+}
+
+static _Unwind_Reason_Code
+prof_unwind_callback(struct _Unwind_Context *context, void *arg) {
+	prof_unwind_data_t *data = (prof_unwind_data_t *)arg;
+	void *ip;
+
+	cassert(config_prof);
+
+	ip = (void *)_Unwind_GetIP(context);
+	if (ip == NULL) {
+		return _URC_END_OF_STACK;
+	}
+	data->vec[*data->len] = ip;
+	(*data->len)++;
+	if (*data->len == data->max) {
+		return _URC_END_OF_STACK;
+	}
+
+	return _URC_NO_REASON;
+}
+
+static void
+prof_backtrace_impl(void **vec, unsigned *len, unsigned max_len) {
+	prof_unwind_data_t data = {vec, len, max_len};
+
+	cassert(config_prof);
+	assert(vec != NULL);
+	assert(max_len == PROF_BT_MAX);
+
+	_Unwind_Backtrace(prof_unwind_callback, &data);
+}
+#elif (defined(JEMALLOC_PROF_GCC))
+static void
+prof_backtrace_impl(void **vec, unsigned *len, unsigned max_len) {
+#define BT_FRAME(i)							\
+	if ((i) < max_len) {						\
+		void *p;						\
+		if (__builtin_frame_address(i) == 0) {			\
+			return;						\
+		}							\
+		p = __builtin_return_address(i);			\
+		if (p == NULL) {					\
+			return;						\
+		}							\
+		vec[(i)] = p;						\
+		*len = (i) + 1;						\
+	} else {							\
+		return;							\
+	}
+
+	cassert(config_prof);
+	assert(vec != NULL);
+	assert(max_len == PROF_BT_MAX);
+
+	BT_FRAME(0)
+	BT_FRAME(1)
+	BT_FRAME(2)
+	BT_FRAME(3)
+	BT_FRAME(4)
+	BT_FRAME(5)
+	BT_FRAME(6)
+	BT_FRAME(7)
+	BT_FRAME(8)
+	BT_FRAME(9)
+
+	BT_FRAME(10)
+	BT_FRAME(11)
+	BT_FRAME(12)
+	BT_FRAME(13)
+	BT_FRAME(14)
+	BT_FRAME(15)
+	BT_FRAME(16)
+	BT_FRAME(17)
+	BT_FRAME(18)
+	BT_FRAME(19)
+
+	BT_FRAME(20)
+	BT_FRAME(21)
+	BT_FRAME(22)
+	BT_FRAME(23)
+	BT_FRAME(24)
+	BT_FRAME(25)
+	BT_FRAME(26)
+	BT_FRAME(27)
+	BT_FRAME(28)
+	BT_FRAME(29)
+
+	BT_FRAME(30)
+	BT_FRAME(31)
+	BT_FRAME(32)
+	BT_FRAME(33)
+	BT_FRAME(34)
+	BT_FRAME(35)
+	BT_FRAME(36)
+	BT_FRAME(37)
+	BT_FRAME(38)
+	BT_FRAME(39)
+
+	BT_FRAME(40)
+	BT_FRAME(41)
+	BT_FRAME(42)
+	BT_FRAME(43)
+	BT_FRAME(44)
+	BT_FRAME(45)
+	BT_FRAME(46)
+	BT_FRAME(47)
+	BT_FRAME(48)
+	BT_FRAME(49)
+
+	BT_FRAME(50)
+	BT_FRAME(51)
+	BT_FRAME(52)
+	BT_FRAME(53)
+	BT_FRAME(54)
+	BT_FRAME(55)
+	BT_FRAME(56)
+	BT_FRAME(57)
+	BT_FRAME(58)
+	BT_FRAME(59)
+
+	BT_FRAME(60)
+	BT_FRAME(61)
+	BT_FRAME(62)
+	BT_FRAME(63)
+	BT_FRAME(64)
+	BT_FRAME(65)
+	BT_FRAME(66)
+	BT_FRAME(67)
+	BT_FRAME(68)
+	BT_FRAME(69)
+
+	BT_FRAME(70)
+	BT_FRAME(71)
+	BT_FRAME(72)
+	BT_FRAME(73)
+	BT_FRAME(74)
+	BT_FRAME(75)
+	BT_FRAME(76)
+	BT_FRAME(77)
+	BT_FRAME(78)
+	BT_FRAME(79)
+
+	BT_FRAME(80)
+	BT_FRAME(81)
+	BT_FRAME(82)
+	BT_FRAME(83)
+	BT_FRAME(84)
+	BT_FRAME(85)
+	BT_FRAME(86)
+	BT_FRAME(87)
+	BT_FRAME(88)
+	BT_FRAME(89)
+
+	BT_FRAME(90)
+	BT_FRAME(91)
+	BT_FRAME(92)
+	BT_FRAME(93)
+	BT_FRAME(94)
+	BT_FRAME(95)
+	BT_FRAME(96)
+	BT_FRAME(97)
+	BT_FRAME(98)
+	BT_FRAME(99)
+
+	BT_FRAME(100)
+	BT_FRAME(101)
+	BT_FRAME(102)
+	BT_FRAME(103)
+	BT_FRAME(104)
+	BT_FRAME(105)
+	BT_FRAME(106)
+	BT_FRAME(107)
+	BT_FRAME(108)
+	BT_FRAME(109)
+
+	BT_FRAME(110)
+	BT_FRAME(111)
+	BT_FRAME(112)
+	BT_FRAME(113)
+	BT_FRAME(114)
+	BT_FRAME(115)
+	BT_FRAME(116)
+	BT_FRAME(117)
+	BT_FRAME(118)
+	BT_FRAME(119)
+
+	BT_FRAME(120)
+	BT_FRAME(121)
+	BT_FRAME(122)
+	BT_FRAME(123)
+	BT_FRAME(124)
+	BT_FRAME(125)
+	BT_FRAME(126)
+	BT_FRAME(127)
+#undef BT_FRAME
+}
+#else
+static void
+prof_backtrace_impl(void **vec, unsigned *len, unsigned max_len) {
+	cassert(config_prof);
+	not_reached();
+}
+#endif
+
+void
+prof_backtrace(tsd_t *tsd, prof_bt_t *bt) {
+	cassert(config_prof);
+	prof_backtrace_hook_t prof_backtrace_hook = prof_backtrace_hook_get();
+	assert(prof_backtrace_hook != NULL);
+
+	pre_reentrancy(tsd, NULL);
+	prof_backtrace_hook(bt->vec, &bt->len, PROF_BT_MAX);
+	post_reentrancy(tsd);
+}
+
+void
+prof_hooks_init() {
+	prof_backtrace_hook_set(&prof_backtrace_impl);
+	prof_dump_hook_set(NULL);
+}
+
+void
+prof_unwind_init() {
+#ifdef JEMALLOC_PROF_LIBGCC
+	/*
+	 * Cause the backtracing machinery to allocate its internal
+	 * state before enabling profiling.
+	 */
+	_Unwind_Backtrace(prof_unwind_init_callback, NULL);
+#endif
+}
+
+static int
+prof_sys_thread_name_read_impl(char *buf, size_t limit) {
+#if defined(JEMALLOC_HAVE_PTHREAD_GETNAME_NP)
+	return pthread_getname_np(pthread_self(), buf, limit);
+#elif defined(JEMALLOC_HAVE_PTHREAD_GET_NAME_NP)
+	pthread_get_name_np(pthread_self(), buf, limit);
+	return 0;
+#else
+	return ENOSYS;
+#endif
+}
+prof_sys_thread_name_read_t *JET_MUTABLE prof_sys_thread_name_read =
+    prof_sys_thread_name_read_impl;
+
+void
+prof_sys_thread_name_fetch(tsd_t *tsd) {
+#define THREAD_NAME_MAX_LEN 16
+	char buf[THREAD_NAME_MAX_LEN];
+	if (!prof_sys_thread_name_read(buf, THREAD_NAME_MAX_LEN)) {
+		prof_thread_name_set_impl(tsd, buf);
+	}
+#undef THREAD_NAME_MAX_LEN
+}
+
+int
+prof_getpid(void) {
+#ifdef _WIN32
+	return GetCurrentProcessId();
+#else
+	return getpid();
+#endif
+}
+
+/*
+ * This buffer is rather large for stack allocation, so use a single buffer for
+ * all profile dumps; protected by prof_dump_mtx.
+ */
+static char prof_dump_buf[PROF_DUMP_BUFSIZE];
+
+typedef struct prof_dump_arg_s prof_dump_arg_t;
+struct prof_dump_arg_s {
+	/*
+	 * Whether error should be handled locally: if true, then we print out
+	 * error message as well as abort (if opt_abort is true) when an error
+	 * occurred, and we also report the error back to the caller in the end;
+	 * if false, then we only report the error back to the caller in the
+	 * end.
+	 */
+	const bool handle_error_locally;
+	/*
+	 * Whether there has been an error in the dumping process, which could
+	 * have happened either in file opening or in file writing.  When an
+	 * error has already occurred, we will stop further writing to the file.
+	 */
+	bool error;
+	/* File descriptor of the dump file. */
+	int prof_dump_fd;
+};
+
+static void
+prof_dump_check_possible_error(prof_dump_arg_t *arg, bool err_cond,
+    const char *format, ...) {
+	assert(!arg->error);
+	if (!err_cond) {
+		return;
+	}
+
+	arg->error = true;
+	if (!arg->handle_error_locally) {
+		return;
+	}
+
+	va_list ap;
+	char buf[PROF_PRINTF_BUFSIZE];
+	va_start(ap, format);
+	malloc_vsnprintf(buf, sizeof(buf), format, ap);
+	va_end(ap);
+	malloc_write(buf);
+
+	if (opt_abort) {
+		abort();
+	}
+}
+
+static int
+prof_dump_open_file_impl(const char *filename, int mode) {
+	return creat(filename, mode);
+}
+prof_dump_open_file_t *JET_MUTABLE prof_dump_open_file =
+    prof_dump_open_file_impl;
+
+static void
+prof_dump_open(prof_dump_arg_t *arg, const char *filename) {
+	arg->prof_dump_fd = prof_dump_open_file(filename, 0644);
+	prof_dump_check_possible_error(arg, arg->prof_dump_fd == -1,
+	    "<jemalloc>: failed to open \"%s\"\n", filename);
+}
+
+prof_dump_write_file_t *JET_MUTABLE prof_dump_write_file = malloc_write_fd;
+
+static void
+prof_dump_flush(void *opaque, const char *s) {
+	cassert(config_prof);
+	prof_dump_arg_t *arg = (prof_dump_arg_t *)opaque;
+	if (!arg->error) {
+		ssize_t err = prof_dump_write_file(arg->prof_dump_fd, s,
+		    strlen(s));
+		prof_dump_check_possible_error(arg, err == -1,
+		    "<jemalloc>: failed to write during heap profile flush\n");
+	}
+}
+
+static void
+prof_dump_close(prof_dump_arg_t *arg) {
+	if (arg->prof_dump_fd != -1) {
+		close(arg->prof_dump_fd);
+	}
+}
+
+#ifndef _WIN32
+JEMALLOC_FORMAT_PRINTF(1, 2)
+static int
+prof_open_maps_internal(const char *format, ...) {
+	int mfd;
+	va_list ap;
+	char filename[PATH_MAX + 1];
+
+	va_start(ap, format);
+	malloc_vsnprintf(filename, sizeof(filename), format, ap);
+	va_end(ap);
+
+#if defined(O_CLOEXEC)
+	mfd = open(filename, O_RDONLY | O_CLOEXEC);
+#else
+	mfd = open(filename, O_RDONLY);
+	if (mfd != -1) {
+		fcntl(mfd, F_SETFD, fcntl(mfd, F_GETFD) | FD_CLOEXEC);
+	}
+#endif
+
+	return mfd;
+}
+#endif
+
+static int
+prof_dump_open_maps_impl() {
+	int mfd;
+
+	cassert(config_prof);
+#if defined(__FreeBSD__) || defined(__DragonFly__)
+	mfd = prof_open_maps_internal("/proc/curproc/map");
+#elif defined(_WIN32)
+	mfd = -1; // Not implemented
+#else
+	int pid = prof_getpid();
+
+	mfd = prof_open_maps_internal("/proc/%d/task/%d/maps", pid, pid);
+	if (mfd == -1) {
+		mfd = prof_open_maps_internal("/proc/%d/maps", pid);
+	}
+#endif
+	return mfd;
+}
+prof_dump_open_maps_t *JET_MUTABLE prof_dump_open_maps =
+    prof_dump_open_maps_impl;
+
+static ssize_t
+prof_dump_read_maps_cb(void *read_cbopaque, void *buf, size_t limit) {
+	int mfd = *(int *)read_cbopaque;
+	assert(mfd != -1);
+	return malloc_read_fd(mfd, buf, limit);
+}
+
+static void
+prof_dump_maps(buf_writer_t *buf_writer) {
+	int mfd = prof_dump_open_maps();
+	if (mfd == -1) {
+		return;
+	}
+
+	buf_writer_cb(buf_writer, "\nMAPPED_LIBRARIES:\n");
+	buf_writer_pipe(buf_writer, prof_dump_read_maps_cb, &mfd);
+	close(mfd);
+}
+
+static bool
+prof_dump(tsd_t *tsd, bool propagate_err, const char *filename,
+    bool leakcheck) {
+	cassert(config_prof);
+	assert(tsd_reentrancy_level_get(tsd) == 0);
+
+	prof_tdata_t * tdata = prof_tdata_get(tsd, true);
+	if (tdata == NULL) {
+		return true;
+	}
+
+	prof_dump_arg_t arg = {/* handle_error_locally */ !propagate_err,
+	    /* error */ false, /* prof_dump_fd */ -1};
+
+	pre_reentrancy(tsd, NULL);
+	malloc_mutex_lock(tsd_tsdn(tsd), &prof_dump_mtx);
+
+	prof_dump_open(&arg, filename);
+	buf_writer_t buf_writer;
+	bool err = buf_writer_init(tsd_tsdn(tsd), &buf_writer, prof_dump_flush,
+	    &arg, prof_dump_buf, PROF_DUMP_BUFSIZE);
+	assert(!err);
+	prof_dump_impl(tsd, buf_writer_cb, &buf_writer, tdata, leakcheck);
+	prof_dump_maps(&buf_writer);
+	buf_writer_terminate(tsd_tsdn(tsd), &buf_writer);
+	prof_dump_close(&arg);
+
+	prof_dump_hook_t dump_hook = prof_dump_hook_get();
+	if (dump_hook != NULL) {
+		dump_hook(filename);
+	}
+	malloc_mutex_unlock(tsd_tsdn(tsd), &prof_dump_mtx);
+	post_reentrancy(tsd);
+
+	return arg.error;
+}
+
+/*
+ * If profiling is off, then PROF_DUMP_FILENAME_LEN is 1, so we'll end up
+ * calling strncpy with a size of 0, which triggers a -Wstringop-truncation
+ * warning (strncpy can never actually be called in this case, since we bail out
+ * much earlier when config_prof is false).  This function works around the
+ * warning to let us leave the warning on.
+ */
+static inline void
+prof_strncpy(char *UNUSED dest, const char *UNUSED src, size_t UNUSED size) {
+	cassert(config_prof);
+#ifdef JEMALLOC_PROF
+	strncpy(dest, src, size);
+#endif
+}
+
+static const char *
+prof_prefix_get(tsdn_t* tsdn) {
+	malloc_mutex_assert_owner(tsdn, &prof_dump_filename_mtx);
+
+	return prof_prefix == NULL ? opt_prof_prefix : prof_prefix;
+}
+
+static bool
+prof_prefix_is_empty(tsdn_t *tsdn) {
+	malloc_mutex_lock(tsdn, &prof_dump_filename_mtx);
+	bool ret = (prof_prefix_get(tsdn)[0] == '\0');
+	malloc_mutex_unlock(tsdn, &prof_dump_filename_mtx);
+	return ret;
+}
+
+#define DUMP_FILENAME_BUFSIZE (PATH_MAX + 1)
+#define VSEQ_INVALID UINT64_C(0xffffffffffffffff)
+static void
+prof_dump_filename(tsd_t *tsd, char *filename, char v, uint64_t vseq) {
+	cassert(config_prof);
+
+	assert(tsd_reentrancy_level_get(tsd) == 0);
+	const char *prefix = prof_prefix_get(tsd_tsdn(tsd));
+
+	if (vseq != VSEQ_INVALID) {
+	        /* "<prefix>.<pid>.<seq>.v<vseq>.heap" */
+		malloc_snprintf(filename, DUMP_FILENAME_BUFSIZE,
+		    "%s.%d.%"FMTu64".%c%"FMTu64".heap", prefix, prof_getpid(),
+		    prof_dump_seq, v, vseq);
+	} else {
+	        /* "<prefix>.<pid>.<seq>.<v>.heap" */
+		malloc_snprintf(filename, DUMP_FILENAME_BUFSIZE,
+		    "%s.%d.%"FMTu64".%c.heap", prefix, prof_getpid(),
+		    prof_dump_seq, v);
+	}
+	prof_dump_seq++;
+}
+
+void
+prof_get_default_filename(tsdn_t *tsdn, char *filename, uint64_t ind) {
+	malloc_mutex_lock(tsdn, &prof_dump_filename_mtx);
+	malloc_snprintf(filename, PROF_DUMP_FILENAME_LEN,
+	    "%s.%d.%"FMTu64".json", prof_prefix_get(tsdn), prof_getpid(), ind);
+	malloc_mutex_unlock(tsdn, &prof_dump_filename_mtx);
+}
+
+void
+prof_fdump_impl(tsd_t *tsd) {
+	char filename[DUMP_FILENAME_BUFSIZE];
+
+	assert(!prof_prefix_is_empty(tsd_tsdn(tsd)));
+	malloc_mutex_lock(tsd_tsdn(tsd), &prof_dump_filename_mtx);
+	prof_dump_filename(tsd, filename, 'f', VSEQ_INVALID);
+	malloc_mutex_unlock(tsd_tsdn(tsd), &prof_dump_filename_mtx);
+	prof_dump(tsd, false, filename, opt_prof_leak);
+}
+
+bool
+prof_prefix_set(tsdn_t *tsdn, const char *prefix) {
+	cassert(config_prof);
+	ctl_mtx_assert_held(tsdn);
+	malloc_mutex_lock(tsdn, &prof_dump_filename_mtx);
+	if (prof_prefix == NULL) {
+		malloc_mutex_unlock(tsdn, &prof_dump_filename_mtx);
+		/* Everything is still guarded by ctl_mtx. */
+		char *buffer = base_alloc(tsdn, prof_base,
+		    PROF_DUMP_FILENAME_LEN, QUANTUM);
+		if (buffer == NULL) {
+			return true;
+		}
+		malloc_mutex_lock(tsdn, &prof_dump_filename_mtx);
+		prof_prefix = buffer;
+	}
+	assert(prof_prefix != NULL);
+
+	prof_strncpy(prof_prefix, prefix, PROF_DUMP_FILENAME_LEN - 1);
+	prof_prefix[PROF_DUMP_FILENAME_LEN - 1] = '\0';
+	malloc_mutex_unlock(tsdn, &prof_dump_filename_mtx);
+
+	return false;
+}
+
+void
+prof_idump_impl(tsd_t *tsd) {
+	malloc_mutex_lock(tsd_tsdn(tsd), &prof_dump_filename_mtx);
+	if (prof_prefix_get(tsd_tsdn(tsd))[0] == '\0') {
+		malloc_mutex_unlock(tsd_tsdn(tsd), &prof_dump_filename_mtx);
+		return;
+	}
+	char filename[PATH_MAX + 1];
+	prof_dump_filename(tsd, filename, 'i', prof_dump_iseq);
+	prof_dump_iseq++;
+	malloc_mutex_unlock(tsd_tsdn(tsd), &prof_dump_filename_mtx);
+	prof_dump(tsd, false, filename, false);
+}
+
+bool
+prof_mdump_impl(tsd_t *tsd, const char *filename) {
+	char filename_buf[DUMP_FILENAME_BUFSIZE];
+	if (filename == NULL) {
+		/* No filename specified, so automatically generate one. */
+		malloc_mutex_lock(tsd_tsdn(tsd), &prof_dump_filename_mtx);
+		if (prof_prefix_get(tsd_tsdn(tsd))[0] == '\0') {
+			malloc_mutex_unlock(tsd_tsdn(tsd), &prof_dump_filename_mtx);
+			return true;
+		}
+		prof_dump_filename(tsd, filename_buf, 'm', prof_dump_mseq);
+		prof_dump_mseq++;
+		malloc_mutex_unlock(tsd_tsdn(tsd), &prof_dump_filename_mtx);
+		filename = filename_buf;
+	}
+	return prof_dump(tsd, true, filename, false);
+}
+
+void
+prof_gdump_impl(tsd_t *tsd) {
+	tsdn_t *tsdn = tsd_tsdn(tsd);
+	malloc_mutex_lock(tsdn, &prof_dump_filename_mtx);
+	if (prof_prefix_get(tsdn)[0] == '\0') {
+		malloc_mutex_unlock(tsdn, &prof_dump_filename_mtx);
+		return;
+	}
+	char filename[DUMP_FILENAME_BUFSIZE];
+	prof_dump_filename(tsd, filename, 'u', prof_dump_useq);
+	prof_dump_useq++;
+	malloc_mutex_unlock(tsdn, &prof_dump_filename_mtx);
+	prof_dump(tsd, false, filename, false);
+}
diff --git a/deps/jemalloc/src/psset.c b/deps/jemalloc/src/psset.c
new file mode 100644
index 0000000..9a8f054
--- /dev/null
+++ b/deps/jemalloc/src/psset.c
@@ -0,0 +1,385 @@
+#include "jemalloc/internal/jemalloc_preamble.h"
+#include "jemalloc/internal/jemalloc_internal_includes.h"
+
+#include "jemalloc/internal/psset.h"
+
+#include "jemalloc/internal/fb.h"
+
+void
+psset_init(psset_t *psset) {
+	for (unsigned i = 0; i < PSSET_NPSIZES; i++) {
+		hpdata_age_heap_new(&psset->pageslabs[i]);
+	}
+	fb_init(psset->pageslab_bitmap, PSSET_NPSIZES);
+	memset(&psset->merged_stats, 0, sizeof(psset->merged_stats));
+	memset(&psset->stats, 0, sizeof(psset->stats));
+	hpdata_empty_list_init(&psset->empty);
+	for (int i = 0; i < PSSET_NPURGE_LISTS; i++) {
+		hpdata_purge_list_init(&psset->to_purge[i]);
+	}
+	fb_init(psset->purge_bitmap, PSSET_NPURGE_LISTS);
+	hpdata_hugify_list_init(&psset->to_hugify);
+}
+
+static void
+psset_bin_stats_accum(psset_bin_stats_t *dst, psset_bin_stats_t *src) {
+	dst->npageslabs += src->npageslabs;
+	dst->nactive += src->nactive;
+	dst->ndirty += src->ndirty;
+}
+
+void
+psset_stats_accum(psset_stats_t *dst, psset_stats_t *src) {
+	psset_bin_stats_accum(&dst->full_slabs[0], &src->full_slabs[0]);
+	psset_bin_stats_accum(&dst->full_slabs[1], &src->full_slabs[1]);
+	psset_bin_stats_accum(&dst->empty_slabs[0], &src->empty_slabs[0]);
+	psset_bin_stats_accum(&dst->empty_slabs[1], &src->empty_slabs[1]);
+	for (pszind_t i = 0; i < PSSET_NPSIZES; i++) {
+		psset_bin_stats_accum(&dst->nonfull_slabs[i][0],
+		    &src->nonfull_slabs[i][0]);
+		psset_bin_stats_accum(&dst->nonfull_slabs[i][1],
+		    &src->nonfull_slabs[i][1]);
+	}
+}
+
+/*
+ * The stats maintenance strategy is to remove a pageslab's contribution to the
+ * stats when we call psset_update_begin, and re-add it (to a potentially new
+ * bin) when we call psset_update_end.
+ */
+JEMALLOC_ALWAYS_INLINE void
+psset_bin_stats_insert_remove(psset_t *psset, psset_bin_stats_t *binstats,
+    hpdata_t *ps, bool insert) {
+	size_t mul = insert ? (size_t)1 : (size_t)-1;
+	size_t huge_idx = (size_t)hpdata_huge_get(ps);
+
+	binstats[huge_idx].npageslabs += mul * 1;
+	binstats[huge_idx].nactive += mul * hpdata_nactive_get(ps);
+	binstats[huge_idx].ndirty += mul * hpdata_ndirty_get(ps);
+
+	psset->merged_stats.npageslabs += mul * 1;
+	psset->merged_stats.nactive += mul * hpdata_nactive_get(ps);
+	psset->merged_stats.ndirty += mul * hpdata_ndirty_get(ps);
+
+	if (config_debug) {
+		psset_bin_stats_t check_stats = {0};
+		for (size_t huge = 0; huge <= 1; huge++) {
+			psset_bin_stats_accum(&check_stats,
+			    &psset->stats.full_slabs[huge]);
+			psset_bin_stats_accum(&check_stats,
+			    &psset->stats.empty_slabs[huge]);
+			for (pszind_t pind = 0; pind < PSSET_NPSIZES; pind++) {
+				psset_bin_stats_accum(&check_stats,
+				    &psset->stats.nonfull_slabs[pind][huge]);
+			}
+		}
+		assert(psset->merged_stats.npageslabs
+		    == check_stats.npageslabs);
+		assert(psset->merged_stats.nactive == check_stats.nactive);
+		assert(psset->merged_stats.ndirty == check_stats.ndirty);
+	}
+}
+
+static void
+psset_bin_stats_insert(psset_t *psset, psset_bin_stats_t *binstats,
+    hpdata_t *ps) {
+	psset_bin_stats_insert_remove(psset, binstats, ps, true);
+}
+
+static void
+psset_bin_stats_remove(psset_t *psset, psset_bin_stats_t *binstats,
+    hpdata_t *ps) {
+	psset_bin_stats_insert_remove(psset, binstats, ps, false);
+}
+
+static void
+psset_hpdata_heap_remove(psset_t *psset, pszind_t pind, hpdata_t *ps) {
+	hpdata_age_heap_remove(&psset->pageslabs[pind], ps);
+	if (hpdata_age_heap_empty(&psset->pageslabs[pind])) {
+		fb_unset(psset->pageslab_bitmap, PSSET_NPSIZES, (size_t)pind);
+	}
+}
+
+static void
+psset_hpdata_heap_insert(psset_t *psset, pszind_t pind, hpdata_t *ps) {
+	if (hpdata_age_heap_empty(&psset->pageslabs[pind])) {
+		fb_set(psset->pageslab_bitmap, PSSET_NPSIZES, (size_t)pind);
+	}
+	hpdata_age_heap_insert(&psset->pageslabs[pind], ps);
+}
+
+static void
+psset_stats_insert(psset_t* psset, hpdata_t *ps) {
+	if (hpdata_empty(ps)) {
+		psset_bin_stats_insert(psset, psset->stats.empty_slabs, ps);
+	} else if (hpdata_full(ps)) {
+		psset_bin_stats_insert(psset, psset->stats.full_slabs, ps);
+	} else {
+		size_t longest_free_range = hpdata_longest_free_range_get(ps);
+
+		pszind_t pind = sz_psz2ind(sz_psz_quantize_floor(
+		    longest_free_range << LG_PAGE));
+		assert(pind < PSSET_NPSIZES);
+
+		psset_bin_stats_insert(psset, psset->stats.nonfull_slabs[pind],
+		    ps);
+	}
+}
+
+static void
+psset_stats_remove(psset_t *psset, hpdata_t *ps) {
+	if (hpdata_empty(ps)) {
+		psset_bin_stats_remove(psset, psset->stats.empty_slabs, ps);
+	} else if (hpdata_full(ps)) {
+		psset_bin_stats_remove(psset, psset->stats.full_slabs, ps);
+	} else {
+		size_t longest_free_range = hpdata_longest_free_range_get(ps);
+
+		pszind_t pind = sz_psz2ind(sz_psz_quantize_floor(
+		    longest_free_range << LG_PAGE));
+		assert(pind < PSSET_NPSIZES);
+
+		psset_bin_stats_remove(psset, psset->stats.nonfull_slabs[pind],
+		    ps);
+	}
+}
+
+/*
+ * Put ps into some container so that it can be found during future allocation
+ * requests.
+ */
+static void
+psset_alloc_container_insert(psset_t *psset, hpdata_t *ps) {
+	assert(!hpdata_in_psset_alloc_container_get(ps));
+	hpdata_in_psset_alloc_container_set(ps, true);
+	if (hpdata_empty(ps)) {
+		/*
+		 * This prepend, paired with popping the head in psset_fit,
+		 * means we implement LIFO ordering for the empty slabs set,
+		 * which seems reasonable.
+		 */
+		hpdata_empty_list_prepend(&psset->empty, ps);
+	} else if (hpdata_full(ps)) {
+		/*
+		 * We don't need to keep track of the full slabs; we're never
+		 * going to return them from a psset_pick_alloc call.
+		 */
+	} else {
+		size_t longest_free_range = hpdata_longest_free_range_get(ps);
+
+		pszind_t pind = sz_psz2ind(sz_psz_quantize_floor(
+		    longest_free_range << LG_PAGE));
+		assert(pind < PSSET_NPSIZES);
+
+		psset_hpdata_heap_insert(psset, pind, ps);
+	}
+}
+
+/* Remove ps from those collections. */
+static void
+psset_alloc_container_remove(psset_t *psset, hpdata_t *ps) {
+	assert(hpdata_in_psset_alloc_container_get(ps));
+	hpdata_in_psset_alloc_container_set(ps, false);
+
+	if (hpdata_empty(ps)) {
+		hpdata_empty_list_remove(&psset->empty, ps);
+	} else if (hpdata_full(ps)) {
+		/* Same as above -- do nothing in this case. */
+	} else {
+		size_t longest_free_range = hpdata_longest_free_range_get(ps);
+
+		pszind_t pind = sz_psz2ind(sz_psz_quantize_floor(
+		    longest_free_range << LG_PAGE));
+		assert(pind < PSSET_NPSIZES);
+
+		psset_hpdata_heap_remove(psset, pind, ps);
+	}
+}
+
+static size_t
+psset_purge_list_ind(hpdata_t *ps) {
+	size_t ndirty = hpdata_ndirty_get(ps);
+	/* Shouldn't have something with no dirty pages purgeable. */
+	assert(ndirty > 0);
+	/*
+	 * Higher indices correspond to lists we'd like to purge earlier; make
+	 * the two highest indices correspond to empty lists, which we attempt
+	 * to purge before purging any non-empty list.  This has two advantages:
+	 * - Empty page slabs are the least likely to get reused (we'll only
+	 *   pick them for an allocation if we have no other choice).
+	 * - Empty page slabs can purge every dirty page they contain in a
+	 *   single call, which is not usually the case.
+	 *
+	 * We purge hugeified empty slabs before nonhugeified ones, on the basis
+	 * that they are fully dirty, while nonhugified slabs might not be, so
+	 * we free up more pages more easily.
+	 */
+	if (hpdata_nactive_get(ps) == 0) {
+		if (hpdata_huge_get(ps)) {
+			return PSSET_NPURGE_LISTS - 1;
+		} else {
+			return PSSET_NPURGE_LISTS - 2;
+		}
+	}
+
+	pszind_t pind = sz_psz2ind(sz_psz_quantize_floor(ndirty << LG_PAGE));
+	/*
+	 * For non-empty slabs, we may reuse them again.  Prefer purging
+	 * non-hugeified slabs before hugeified ones then, among pages of
+	 * similar dirtiness.  We still get some benefit from the hugification.
+	 */
+	return (size_t)pind * 2 + (hpdata_huge_get(ps) ? 0 : 1);
+}
+
+static void
+psset_maybe_remove_purge_list(psset_t *psset, hpdata_t *ps) {
+	/*
+	 * Remove the hpdata from its purge list (if it's in one).  Even if it's
+	 * going to stay in the same one, by appending it during
+	 * psset_update_end, we move it to the end of its queue, so that we
+	 * purge LRU within a given dirtiness bucket.
+	 */
+	if (hpdata_purge_allowed_get(ps)) {
+		size_t ind = psset_purge_list_ind(ps);
+		hpdata_purge_list_t *purge_list = &psset->to_purge[ind];
+		hpdata_purge_list_remove(purge_list, ps);
+		if (hpdata_purge_list_empty(purge_list)) {
+			fb_unset(psset->purge_bitmap, PSSET_NPURGE_LISTS, ind);
+		}
+	}
+}
+
+static void
+psset_maybe_insert_purge_list(psset_t *psset, hpdata_t *ps) {
+	if (hpdata_purge_allowed_get(ps)) {
+		size_t ind = psset_purge_list_ind(ps);
+		hpdata_purge_list_t *purge_list = &psset->to_purge[ind];
+		if (hpdata_purge_list_empty(purge_list)) {
+			fb_set(psset->purge_bitmap, PSSET_NPURGE_LISTS, ind);
+		}
+		hpdata_purge_list_append(purge_list, ps);
+	}
+
+}
+
+void
+psset_update_begin(psset_t *psset, hpdata_t *ps) {
+	hpdata_assert_consistent(ps);
+	assert(hpdata_in_psset_get(ps));
+	hpdata_updating_set(ps, true);
+	psset_stats_remove(psset, ps);
+	if (hpdata_in_psset_alloc_container_get(ps)) {
+		/*
+		 * Some metadata updates can break alloc container invariants
+		 * (e.g. the longest free range determines the hpdata_heap_t the
+		 * pageslab lives in).
+		 */
+		assert(hpdata_alloc_allowed_get(ps));
+		psset_alloc_container_remove(psset, ps);
+	}
+	psset_maybe_remove_purge_list(psset, ps);
+	/*
+	 * We don't update presence in the hugify list; we try to keep it FIFO,
+	 * even in the presence of other metadata updates.  We'll update
+	 * presence at the end of the metadata update if necessary.
+	 */
+}
+
+void
+psset_update_end(psset_t *psset, hpdata_t *ps) {
+	assert(hpdata_in_psset_get(ps));
+	hpdata_updating_set(ps, false);
+	psset_stats_insert(psset, ps);
+
+	/*
+	 * The update begin should have removed ps from whatever alloc container
+	 * it was in.
+	 */
+	assert(!hpdata_in_psset_alloc_container_get(ps));
+	if (hpdata_alloc_allowed_get(ps)) {
+		psset_alloc_container_insert(psset, ps);
+	}
+	psset_maybe_insert_purge_list(psset, ps);
+
+	if (hpdata_hugify_allowed_get(ps)
+	    && !hpdata_in_psset_hugify_container_get(ps)) {
+		hpdata_in_psset_hugify_container_set(ps, true);
+		hpdata_hugify_list_append(&psset->to_hugify, ps);
+	} else if (!hpdata_hugify_allowed_get(ps)
+	    && hpdata_in_psset_hugify_container_get(ps)) {
+		hpdata_in_psset_hugify_container_set(ps, false);
+		hpdata_hugify_list_remove(&psset->to_hugify, ps);
+	}
+	hpdata_assert_consistent(ps);
+}
+
+hpdata_t *
+psset_pick_alloc(psset_t *psset, size_t size) {
+	assert((size & PAGE_MASK) == 0);
+	assert(size <= HUGEPAGE);
+
+	pszind_t min_pind = sz_psz2ind(sz_psz_quantize_ceil(size));
+	pszind_t pind = (pszind_t)fb_ffs(psset->pageslab_bitmap, PSSET_NPSIZES,
+	    (size_t)min_pind);
+	if (pind == PSSET_NPSIZES) {
+		return hpdata_empty_list_first(&psset->empty);
+	}
+	hpdata_t *ps = hpdata_age_heap_first(&psset->pageslabs[pind]);
+	if (ps == NULL) {
+		return NULL;
+	}
+
+	hpdata_assert_consistent(ps);
+
+	return ps;
+}
+
+hpdata_t *
+psset_pick_purge(psset_t *psset) {
+	ssize_t ind_ssz = fb_fls(psset->purge_bitmap, PSSET_NPURGE_LISTS,
+	    PSSET_NPURGE_LISTS - 1);
+	if (ind_ssz < 0) {
+		return NULL;
+	}
+	pszind_t ind = (pszind_t)ind_ssz;
+	assert(ind < PSSET_NPURGE_LISTS);
+	hpdata_t *ps = hpdata_purge_list_first(&psset->to_purge[ind]);
+	assert(ps != NULL);
+	return ps;
+}
+
+hpdata_t *
+psset_pick_hugify(psset_t *psset) {
+	return hpdata_hugify_list_first(&psset->to_hugify);
+}
+
+void
+psset_insert(psset_t *psset, hpdata_t *ps) {
+	hpdata_in_psset_set(ps, true);
+
+	psset_stats_insert(psset, ps);
+	if (hpdata_alloc_allowed_get(ps)) {
+		psset_alloc_container_insert(psset, ps);
+	}
+	psset_maybe_insert_purge_list(psset, ps);
+
+	if (hpdata_hugify_allowed_get(ps)) {
+		hpdata_in_psset_hugify_container_set(ps, true);
+		hpdata_hugify_list_append(&psset->to_hugify, ps);
+	}
+}
+
+void
+psset_remove(psset_t *psset, hpdata_t *ps) {
+	hpdata_in_psset_set(ps, false);
+
+	psset_stats_remove(psset, ps);
+	if (hpdata_in_psset_alloc_container_get(ps)) {
+		psset_alloc_container_remove(psset, ps);
+	}
+	psset_maybe_remove_purge_list(psset, ps);
+	if (hpdata_in_psset_hugify_container_get(ps)) {
+		hpdata_in_psset_hugify_container_set(ps, false);
+		hpdata_hugify_list_remove(&psset->to_hugify, ps);
+	}
+}
diff --git a/deps/jemalloc/src/rtree.c b/deps/jemalloc/src/rtree.c
new file mode 100644
index 0000000..6496b5a
--- /dev/null
+++ b/deps/jemalloc/src/rtree.c
@@ -0,0 +1,261 @@
+#include "jemalloc/internal/jemalloc_preamble.h"
+#include "jemalloc/internal/jemalloc_internal_includes.h"
+
+#include "jemalloc/internal/assert.h"
+#include "jemalloc/internal/mutex.h"
+
+/*
+ * Only the most significant bits of keys passed to rtree_{read,write}() are
+ * used.
+ */
+bool
+rtree_new(rtree_t *rtree, base_t *base, bool zeroed) {
+#ifdef JEMALLOC_JET
+	if (!zeroed) {
+		memset(rtree, 0, sizeof(rtree_t)); /* Clear root. */
+	}
+#else
+	assert(zeroed);
+#endif
+	rtree->base = base;
+
+	if (malloc_mutex_init(&rtree->init_lock, "rtree", WITNESS_RANK_RTREE,
+	    malloc_mutex_rank_exclusive)) {
+		return true;
+	}
+
+	return false;
+}
+
+static rtree_node_elm_t *
+rtree_node_alloc(tsdn_t *tsdn, rtree_t *rtree, size_t nelms) {
+	return (rtree_node_elm_t *)base_alloc(tsdn, rtree->base,
+	    nelms * sizeof(rtree_node_elm_t), CACHELINE);
+}
+
+static rtree_leaf_elm_t *
+rtree_leaf_alloc(tsdn_t *tsdn, rtree_t *rtree, size_t nelms) {
+	return (rtree_leaf_elm_t *)base_alloc(tsdn, rtree->base,
+	    nelms * sizeof(rtree_leaf_elm_t), CACHELINE);
+}
+
+static rtree_node_elm_t *
+rtree_node_init(tsdn_t *tsdn, rtree_t *rtree, unsigned level,
+    atomic_p_t *elmp) {
+	malloc_mutex_lock(tsdn, &rtree->init_lock);
+	/*
+	 * If *elmp is non-null, then it was initialized with the init lock
+	 * held, so we can get by with 'relaxed' here.
+	 */
+	rtree_node_elm_t *node = atomic_load_p(elmp, ATOMIC_RELAXED);
+	if (node == NULL) {
+		node = rtree_node_alloc(tsdn, rtree, ZU(1) <<
+		    rtree_levels[level].bits);
+		if (node == NULL) {
+			malloc_mutex_unlock(tsdn, &rtree->init_lock);
+			return NULL;
+		}
+		/*
+		 * Even though we hold the lock, a later reader might not; we
+		 * need release semantics.
+		 */
+		atomic_store_p(elmp, node, ATOMIC_RELEASE);
+	}
+	malloc_mutex_unlock(tsdn, &rtree->init_lock);
+
+	return node;
+}
+
+static rtree_leaf_elm_t *
+rtree_leaf_init(tsdn_t *tsdn, rtree_t *rtree, atomic_p_t *elmp) {
+	malloc_mutex_lock(tsdn, &rtree->init_lock);
+	/*
+	 * If *elmp is non-null, then it was initialized with the init lock
+	 * held, so we can get by with 'relaxed' here.
+	 */
+	rtree_leaf_elm_t *leaf = atomic_load_p(elmp, ATOMIC_RELAXED);
+	if (leaf == NULL) {
+		leaf = rtree_leaf_alloc(tsdn, rtree, ZU(1) <<
+		    rtree_levels[RTREE_HEIGHT-1].bits);
+		if (leaf == NULL) {
+			malloc_mutex_unlock(tsdn, &rtree->init_lock);
+			return NULL;
+		}
+		/*
+		 * Even though we hold the lock, a later reader might not; we
+		 * need release semantics.
+		 */
+		atomic_store_p(elmp, leaf, ATOMIC_RELEASE);
+	}
+	malloc_mutex_unlock(tsdn, &rtree->init_lock);
+
+	return leaf;
+}
+
+static bool
+rtree_node_valid(rtree_node_elm_t *node) {
+	return ((uintptr_t)node != (uintptr_t)0);
+}
+
+static bool
+rtree_leaf_valid(rtree_leaf_elm_t *leaf) {
+	return ((uintptr_t)leaf != (uintptr_t)0);
+}
+
+static rtree_node_elm_t *
+rtree_child_node_tryread(rtree_node_elm_t *elm, bool dependent) {
+	rtree_node_elm_t *node;
+
+	if (dependent) {
+		node = (rtree_node_elm_t *)atomic_load_p(&elm->child,
+		    ATOMIC_RELAXED);
+	} else {
+		node = (rtree_node_elm_t *)atomic_load_p(&elm->child,
+		    ATOMIC_ACQUIRE);
+	}
+
+	assert(!dependent || node != NULL);
+	return node;
+}
+
+static rtree_node_elm_t *
+rtree_child_node_read(tsdn_t *tsdn, rtree_t *rtree, rtree_node_elm_t *elm,
+    unsigned level, bool dependent) {
+	rtree_node_elm_t *node;
+
+	node = rtree_child_node_tryread(elm, dependent);
+	if (!dependent && unlikely(!rtree_node_valid(node))) {
+		node = rtree_node_init(tsdn, rtree, level + 1, &elm->child);
+	}
+	assert(!dependent || node != NULL);
+	return node;
+}
+
+static rtree_leaf_elm_t *
+rtree_child_leaf_tryread(rtree_node_elm_t *elm, bool dependent) {
+	rtree_leaf_elm_t *leaf;
+
+	if (dependent) {
+		leaf = (rtree_leaf_elm_t *)atomic_load_p(&elm->child,
+		    ATOMIC_RELAXED);
+	} else {
+		leaf = (rtree_leaf_elm_t *)atomic_load_p(&elm->child,
+		    ATOMIC_ACQUIRE);
+	}
+
+	assert(!dependent || leaf != NULL);
+	return leaf;
+}
+
+static rtree_leaf_elm_t *
+rtree_child_leaf_read(tsdn_t *tsdn, rtree_t *rtree, rtree_node_elm_t *elm,
+    unsigned level, bool dependent) {
+	rtree_leaf_elm_t *leaf;
+
+	leaf = rtree_child_leaf_tryread(elm, dependent);
+	if (!dependent && unlikely(!rtree_leaf_valid(leaf))) {
+		leaf = rtree_leaf_init(tsdn, rtree, &elm->child);
+	}
+	assert(!dependent || leaf != NULL);
+	return leaf;
+}
+
+rtree_leaf_elm_t *
+rtree_leaf_elm_lookup_hard(tsdn_t *tsdn, rtree_t *rtree, rtree_ctx_t *rtree_ctx,
+    uintptr_t key, bool dependent, bool init_missing) {
+	rtree_node_elm_t *node;
+	rtree_leaf_elm_t *leaf;
+#if RTREE_HEIGHT > 1
+	node = rtree->root;
+#else
+	leaf = rtree->root;
+#endif
+
+	if (config_debug) {
+		uintptr_t leafkey = rtree_leafkey(key);
+		for (unsigned i = 0; i < RTREE_CTX_NCACHE; i++) {
+			assert(rtree_ctx->cache[i].leafkey != leafkey);
+		}
+		for (unsigned i = 0; i < RTREE_CTX_NCACHE_L2; i++) {
+			assert(rtree_ctx->l2_cache[i].leafkey != leafkey);
+		}
+	}
+
+#define RTREE_GET_CHILD(level) {					\
+		assert(level < RTREE_HEIGHT-1);				\
+		if (level != 0 && !dependent &&				\
+		    unlikely(!rtree_node_valid(node))) {		\
+			return NULL;					\
+		}							\
+		uintptr_t subkey = rtree_subkey(key, level);		\
+		if (level + 2 < RTREE_HEIGHT) {				\
+			node = init_missing ?				\
+			    rtree_child_node_read(tsdn, rtree,		\
+			    &node[subkey], level, dependent) :		\
+			    rtree_child_node_tryread(&node[subkey],	\
+			    dependent);					\
+		} else {						\
+			leaf = init_missing ?				\
+			    rtree_child_leaf_read(tsdn, rtree,		\
+			    &node[subkey], level, dependent) :		\
+			    rtree_child_leaf_tryread(&node[subkey],	\
+			    dependent);					\
+		}							\
+	}
+	/*
+	 * Cache replacement upon hard lookup (i.e. L1 & L2 rtree cache miss):
+	 * (1) evict last entry in L2 cache; (2) move the collision slot from L1
+	 * cache down to L2; and 3) fill L1.
+	 */
+#define RTREE_GET_LEAF(level) {						\
+		assert(level == RTREE_HEIGHT-1);			\
+		if (!dependent && unlikely(!rtree_leaf_valid(leaf))) {	\
+			return NULL;					\
+		}							\
+		if (RTREE_CTX_NCACHE_L2 > 1) {				\
+			memmove(&rtree_ctx->l2_cache[1],		\
+			    &rtree_ctx->l2_cache[0],			\
+			    sizeof(rtree_ctx_cache_elm_t) *		\
+			    (RTREE_CTX_NCACHE_L2 - 1));			\
+		}							\
+		size_t slot = rtree_cache_direct_map(key);		\
+		rtree_ctx->l2_cache[0].leafkey =			\
+		    rtree_ctx->cache[slot].leafkey;			\
+		rtree_ctx->l2_cache[0].leaf =				\
+		    rtree_ctx->cache[slot].leaf;			\
+		uintptr_t leafkey = rtree_leafkey(key);			\
+		rtree_ctx->cache[slot].leafkey = leafkey;		\
+		rtree_ctx->cache[slot].leaf = leaf;			\
+		uintptr_t subkey = rtree_subkey(key, level);		\
+		return &leaf[subkey];					\
+	}
+	if (RTREE_HEIGHT > 1) {
+		RTREE_GET_CHILD(0)
+	}
+	if (RTREE_HEIGHT > 2) {
+		RTREE_GET_CHILD(1)
+	}
+	if (RTREE_HEIGHT > 3) {
+		for (unsigned i = 2; i < RTREE_HEIGHT-1; i++) {
+			RTREE_GET_CHILD(i)
+		}
+	}
+	RTREE_GET_LEAF(RTREE_HEIGHT-1)
+#undef RTREE_GET_CHILD
+#undef RTREE_GET_LEAF
+	not_reached();
+}
+
+void
+rtree_ctx_data_init(rtree_ctx_t *ctx) {
+	for (unsigned i = 0; i < RTREE_CTX_NCACHE; i++) {
+		rtree_ctx_cache_elm_t *cache = &ctx->cache[i];
+		cache->leafkey = RTREE_LEAFKEY_INVALID;
+		cache->leaf = NULL;
+	}
+	for (unsigned i = 0; i < RTREE_CTX_NCACHE_L2; i++) {
+		rtree_ctx_cache_elm_t *cache = &ctx->l2_cache[i];
+		cache->leafkey = RTREE_LEAFKEY_INVALID;
+		cache->leaf = NULL;
+	}
+}
diff --git a/deps/jemalloc/src/safety_check.c b/deps/jemalloc/src/safety_check.c
new file mode 100644
index 0000000..209fdda
--- /dev/null
+++ b/deps/jemalloc/src/safety_check.c
@@ -0,0 +1,36 @@
+#include "jemalloc/internal/jemalloc_preamble.h"
+#include "jemalloc/internal/jemalloc_internal_includes.h"
+
+static safety_check_abort_hook_t safety_check_abort;
+
+void safety_check_fail_sized_dealloc(bool current_dealloc, const void *ptr,
+    size_t true_size, size_t input_size) {
+	char *src = current_dealloc ? "the current pointer being freed" :
+	    "in thread cache, possibly from previous deallocations";
+
+	safety_check_fail("<jemalloc>: size mismatch detected (true size %zu "
+	    "vs input size %zu), likely caused by application sized "
+	    "deallocation bugs (source address: %p, %s). Suggest building with "
+	    "--enable-debug or address sanitizer for debugging. Abort.\n",
+	    true_size, input_size, ptr, src);
+}
+
+void safety_check_set_abort(safety_check_abort_hook_t abort_fn) {
+	safety_check_abort = abort_fn;
+}
+
+void safety_check_fail(const char *format, ...) {
+	char buf[MALLOC_PRINTF_BUFSIZE];
+
+	va_list ap;
+	va_start(ap, format);
+	malloc_vsnprintf(buf, MALLOC_PRINTF_BUFSIZE, format, ap);
+	va_end(ap);
+
+	if (safety_check_abort == NULL) {
+		malloc_write(buf);
+		abort();
+	} else {
+		safety_check_abort(buf);
+	}
+}
diff --git a/deps/jemalloc/src/san.c b/deps/jemalloc/src/san.c
new file mode 100644
index 0000000..6e51291
--- /dev/null
+++ b/deps/jemalloc/src/san.c
@@ -0,0 +1,208 @@
+#include "jemalloc/internal/jemalloc_preamble.h"
+#include "jemalloc/internal/jemalloc_internal_includes.h"
+
+#include "jemalloc/internal/assert.h"
+#include "jemalloc/internal/ehooks.h"
+#include "jemalloc/internal/san.h"
+#include "jemalloc/internal/tsd.h"
+
+/* The sanitizer options. */
+size_t opt_san_guard_large = SAN_GUARD_LARGE_EVERY_N_EXTENTS_DEFAULT;
+size_t opt_san_guard_small = SAN_GUARD_SMALL_EVERY_N_EXTENTS_DEFAULT;
+
+/* Aligned (-1 is off) ptrs will be junked & stashed on dealloc. */
+ssize_t opt_lg_san_uaf_align = SAN_LG_UAF_ALIGN_DEFAULT;
+
+/*
+ *  Initialized in san_init().  When disabled, the mask is set to (uintptr_t)-1
+ *  to always fail the nonfast_align check.
+ */
+uintptr_t san_cache_bin_nonfast_mask = SAN_CACHE_BIN_NONFAST_MASK_DEFAULT;
+
+static inline void
+san_find_guarded_addr(edata_t *edata, uintptr_t *guard1, uintptr_t *guard2,
+    uintptr_t *addr, size_t size, bool left, bool right) {
+	assert(!edata_guarded_get(edata));
+	assert(size % PAGE == 0);
+	*addr = (uintptr_t)edata_base_get(edata);
+	if (left) {
+		*guard1 = *addr;
+		*addr += SAN_PAGE_GUARD;
+	} else {
+		*guard1 = 0;
+	}
+
+	if (right) {
+		*guard2 = *addr + size;
+	} else {
+		*guard2 = 0;
+	}
+}
+
+static inline void
+san_find_unguarded_addr(edata_t *edata, uintptr_t *guard1, uintptr_t *guard2,
+    uintptr_t *addr, size_t size, bool left, bool right) {
+	assert(edata_guarded_get(edata));
+	assert(size % PAGE == 0);
+	*addr = (uintptr_t)edata_base_get(edata);
+	if (right) {
+		*guard2 = *addr + size;
+	} else {
+		*guard2 = 0;
+	}
+
+	if (left) {
+		*guard1 = *addr - SAN_PAGE_GUARD;
+		assert(*guard1 != 0);
+		*addr = *guard1;
+	} else {
+		*guard1 = 0;
+	}
+}
+
+void
+san_guard_pages(tsdn_t *tsdn, ehooks_t *ehooks, edata_t *edata, emap_t *emap,
+    bool left, bool right, bool remap) {
+	assert(left || right);
+	if (remap) {
+		emap_deregister_boundary(tsdn, emap, edata);
+	}
+
+	size_t size_with_guards = edata_size_get(edata);
+	size_t usize = (left && right)
+	    ? san_two_side_unguarded_sz(size_with_guards)
+	    : san_one_side_unguarded_sz(size_with_guards);
+
+	uintptr_t guard1, guard2, addr;
+	san_find_guarded_addr(edata, &guard1, &guard2, &addr, usize, left,
+	    right);
+
+	assert(edata_state_get(edata) == extent_state_active);
+	ehooks_guard(tsdn, ehooks, (void *)guard1, (void *)guard2);
+
+	/* Update the guarded addr and usable size of the edata. */
+	edata_size_set(edata, usize);
+	edata_addr_set(edata, (void *)addr);
+	edata_guarded_set(edata, true);
+
+	if (remap) {
+		emap_register_boundary(tsdn, emap, edata, SC_NSIZES,
+		    /* slab */ false);
+	}
+}
+
+static void
+san_unguard_pages_impl(tsdn_t *tsdn, ehooks_t *ehooks, edata_t *edata,
+    emap_t *emap, bool left, bool right, bool remap) {
+	assert(left || right);
+	/* Remove the inner boundary which no longer exists. */
+	if (remap) {
+		assert(edata_state_get(edata) == extent_state_active);
+		emap_deregister_boundary(tsdn, emap, edata);
+	} else {
+		assert(edata_state_get(edata) == extent_state_retained);
+	}
+
+	size_t size = edata_size_get(edata);
+	size_t size_with_guards = (left && right)
+	    ? san_two_side_guarded_sz(size)
+	    : san_one_side_guarded_sz(size);
+
+	uintptr_t guard1, guard2, addr;
+	san_find_unguarded_addr(edata, &guard1, &guard2, &addr, size, left,
+	    right);
+
+	ehooks_unguard(tsdn, ehooks, (void *)guard1, (void *)guard2);
+
+	/* Update the true addr and usable size of the edata. */
+	edata_size_set(edata, size_with_guards);
+	edata_addr_set(edata, (void *)addr);
+	edata_guarded_set(edata, false);
+
+	/*
+	 * Then re-register the outer boundary including the guards, if
+	 * requested.
+	 */
+	if (remap) {
+		emap_register_boundary(tsdn, emap, edata, SC_NSIZES,
+		    /* slab */ false);
+	}
+}
+
+void
+san_unguard_pages(tsdn_t *tsdn, ehooks_t *ehooks, edata_t *edata,
+    emap_t *emap, bool left, bool right) {
+	san_unguard_pages_impl(tsdn, ehooks, edata, emap, left, right,
+	    /* remap */ true);
+}
+
+void
+san_unguard_pages_pre_destroy(tsdn_t *tsdn, ehooks_t *ehooks, edata_t *edata,
+    emap_t *emap) {
+	emap_assert_not_mapped(tsdn, emap, edata);
+	/*
+	 * We don't want to touch the emap of about to be destroyed extents, as
+	 * they have been unmapped upon eviction from the retained ecache. Also,
+	 * we unguard the extents to the right, because retained extents only
+	 * own their right guard page per san_bump_alloc's logic.
+	 */
+	 san_unguard_pages_impl(tsdn, ehooks, edata, emap, /* left */ false,
+	    /* right */ true, /* remap */ false);
+}
+
+static bool
+san_stashed_corrupted(void *ptr, size_t size) {
+	if (san_junk_ptr_should_slow()) {
+		for (size_t i = 0; i < size; i++) {
+			if (((char *)ptr)[i] != (char)uaf_detect_junk) {
+				return true;
+			}
+		}
+		return false;
+	}
+
+	void *first, *mid, *last;
+	san_junk_ptr_locations(ptr, size, &first, &mid, &last);
+	if (*(uintptr_t *)first != uaf_detect_junk ||
+	    *(uintptr_t *)mid != uaf_detect_junk ||
+	    *(uintptr_t *)last != uaf_detect_junk) {
+		return true;
+	}
+
+	return false;
+}
+
+void
+san_check_stashed_ptrs(void **ptrs, size_t nstashed, size_t usize) {
+	/*
+	 * Verify that the junked-filled & stashed pointers remain unchanged, to
+	 * detect write-after-free.
+	 */
+	for (size_t n = 0; n < nstashed; n++) {
+		void *stashed = ptrs[n];
+		assert(stashed != NULL);
+		assert(cache_bin_nonfast_aligned(stashed));
+		if (unlikely(san_stashed_corrupted(stashed, usize))) {
+			safety_check_fail("<jemalloc>: Write-after-free "
+			    "detected on deallocated pointer %p (size %zu).\n",
+			    stashed, usize);
+		}
+	}
+}
+
+void
+tsd_san_init(tsd_t *tsd) {
+	*tsd_san_extents_until_guard_smallp_get(tsd) = opt_san_guard_small;
+	*tsd_san_extents_until_guard_largep_get(tsd) = opt_san_guard_large;
+}
+
+void
+san_init(ssize_t lg_san_uaf_align) {
+	assert(lg_san_uaf_align == -1 || lg_san_uaf_align >= LG_PAGE);
+	if (lg_san_uaf_align == -1) {
+		san_cache_bin_nonfast_mask = (uintptr_t)-1;
+		return;
+	}
+
+	san_cache_bin_nonfast_mask = ((uintptr_t)1 << lg_san_uaf_align) - 1;
+}
diff --git a/deps/jemalloc/src/san_bump.c b/deps/jemalloc/src/san_bump.c
new file mode 100644
index 0000000..8889745
--- /dev/null
+++ b/deps/jemalloc/src/san_bump.c
@@ -0,0 +1,104 @@
+#include "jemalloc/internal/jemalloc_preamble.h"
+#include "jemalloc/internal/jemalloc_internal_includes.h"
+
+#include "jemalloc/internal/san_bump.h"
+#include "jemalloc/internal/pac.h"
+#include "jemalloc/internal/san.h"
+#include "jemalloc/internal/ehooks.h"
+#include "jemalloc/internal/edata_cache.h"
+
+static bool
+san_bump_grow_locked(tsdn_t *tsdn, san_bump_alloc_t *sba, pac_t *pac,
+    ehooks_t *ehooks, size_t size);
+
+edata_t *
+san_bump_alloc(tsdn_t *tsdn, san_bump_alloc_t* sba, pac_t *pac,
+    ehooks_t *ehooks, size_t size, bool zero) {
+	assert(san_bump_enabled());
+
+	edata_t* to_destroy;
+	size_t guarded_size = san_one_side_guarded_sz(size);
+
+	malloc_mutex_lock(tsdn, &sba->mtx);
+
+	if (sba->curr_reg == NULL ||
+	    edata_size_get(sba->curr_reg) < guarded_size) {
+		/*
+		 * If the current region can't accommodate the allocation,
+		 * try replacing it with a larger one and destroy current if the
+		 * replacement succeeds.
+		 */
+		to_destroy = sba->curr_reg;
+		bool err = san_bump_grow_locked(tsdn, sba, pac, ehooks,
+		    guarded_size);
+		if (err) {
+			goto label_err;
+		}
+	} else {
+		to_destroy = NULL;
+	}
+	assert(guarded_size <= edata_size_get(sba->curr_reg));
+	size_t trail_size = edata_size_get(sba->curr_reg) - guarded_size;
+
+	edata_t* edata;
+	if (trail_size != 0) {
+		edata_t* curr_reg_trail = extent_split_wrapper(tsdn, pac,
+		    ehooks, sba->curr_reg, guarded_size, trail_size,
+		    /* holding_core_locks */ true);
+		if (curr_reg_trail == NULL) {
+			goto label_err;
+		}
+		edata = sba->curr_reg;
+		sba->curr_reg = curr_reg_trail;
+	} else {
+		edata = sba->curr_reg;
+		sba->curr_reg = NULL;
+	}
+
+	malloc_mutex_unlock(tsdn, &sba->mtx);
+
+	assert(!edata_guarded_get(edata));
+	assert(sba->curr_reg == NULL || !edata_guarded_get(sba->curr_reg));
+	assert(to_destroy == NULL || !edata_guarded_get(to_destroy));
+
+	if (to_destroy != NULL) {
+		extent_destroy_wrapper(tsdn, pac, ehooks, to_destroy);
+	}
+
+	san_guard_pages(tsdn, ehooks, edata, pac->emap, /* left */ false,
+	    /* right */ true, /* remap */ true);
+
+	if (extent_commit_zero(tsdn, ehooks, edata, /* commit */ true, zero,
+	    /* growing_retained */ false)) {
+		extent_record(tsdn, pac, ehooks, &pac->ecache_retained,
+		    edata);
+		return NULL;
+	}
+
+	if (config_prof) {
+		extent_gdump_add(tsdn, edata);
+	}
+
+	return edata;
+label_err:
+	malloc_mutex_unlock(tsdn, &sba->mtx);
+	return NULL;
+}
+
+static bool
+san_bump_grow_locked(tsdn_t *tsdn, san_bump_alloc_t *sba, pac_t *pac,
+    ehooks_t *ehooks, size_t size) {
+	malloc_mutex_assert_owner(tsdn, &sba->mtx);
+
+	bool committed = false, zeroed = false;
+	size_t alloc_size = size > SBA_RETAINED_ALLOC_SIZE ? size :
+	    SBA_RETAINED_ALLOC_SIZE;
+	assert((alloc_size & PAGE_MASK) == 0);
+	sba->curr_reg = extent_alloc_wrapper(tsdn, pac, ehooks, NULL,
+	    alloc_size, PAGE, zeroed, &committed,
+	    /* growing_retained */ true);
+	if (sba->curr_reg == NULL) {
+		return true;
+	}
+	return false;
+}
diff --git a/deps/jemalloc/src/sc.c b/deps/jemalloc/src/sc.c
new file mode 100644
index 0000000..e4a94d8
--- /dev/null
+++ b/deps/jemalloc/src/sc.c
@@ -0,0 +1,306 @@
+#include "jemalloc/internal/jemalloc_preamble.h"
+
+#include "jemalloc/internal/assert.h"
+#include "jemalloc/internal/bit_util.h"
+#include "jemalloc/internal/bitmap.h"
+#include "jemalloc/internal/pages.h"
+#include "jemalloc/internal/sc.h"
+
+/*
+ * This module computes the size classes used to satisfy allocations.  The logic
+ * here was ported more or less line-by-line from a shell script, and because of
+ * that is not the most idiomatic C.  Eventually we should fix this, but for now
+ * at least the damage is compartmentalized to this file.
+ */
+
+size_t
+reg_size_compute(int lg_base, int lg_delta, int ndelta) {
+	return (ZU(1) << lg_base) + (ZU(ndelta) << lg_delta);
+}
+
+/* Returns the number of pages in the slab. */
+static int
+slab_size(int lg_page, int lg_base, int lg_delta, int ndelta) {
+	size_t page = (ZU(1) << lg_page);
+	size_t reg_size = reg_size_compute(lg_base, lg_delta, ndelta);
+
+	size_t try_slab_size = page;
+	size_t try_nregs = try_slab_size / reg_size;
+	size_t perfect_slab_size = 0;
+	bool perfect = false;
+	/*
+	 * This loop continues until we find the least common multiple of the
+	 * page size and size class size.  Size classes are all of the form
+	 * base + ndelta * delta == (ndelta + base/ndelta) * delta, which is
+	 * (ndelta + ngroup) * delta.  The way we choose slabbing strategies
+	 * means that delta is at most the page size and ndelta < ngroup.  So
+	 * the loop executes for at most 2 * ngroup - 1 iterations, which is
+	 * also the bound on the number of pages in a slab chosen by default.
+	 * With the current default settings, this is at most 7.
+	 */
+	while (!perfect) {
+		perfect_slab_size = try_slab_size;
+		size_t perfect_nregs = try_nregs;
+		try_slab_size += page;
+		try_nregs = try_slab_size / reg_size;
+		if (perfect_slab_size == perfect_nregs * reg_size) {
+			perfect = true;
+		}
+	}
+	return (int)(perfect_slab_size / page);
+}
+
+static void
+size_class(
+    /* Output. */
+    sc_t *sc,
+    /* Configuration decisions. */
+    int lg_max_lookup, int lg_page, int lg_ngroup,
+    /* Inputs specific to the size class. */
+    int index, int lg_base, int lg_delta, int ndelta) {
+	sc->index = index;
+	sc->lg_base = lg_base;
+	sc->lg_delta = lg_delta;
+	sc->ndelta = ndelta;
+	size_t size = reg_size_compute(lg_base, lg_delta, ndelta);
+	sc->psz = (size % (ZU(1) << lg_page) == 0);
+	if (index == 0) {
+		assert(!sc->psz);
+	}
+	if (size < (ZU(1) << (lg_page + lg_ngroup))) {
+		sc->bin = true;
+		sc->pgs = slab_size(lg_page, lg_base, lg_delta, ndelta);
+	} else {
+		sc->bin = false;
+		sc->pgs = 0;
+	}
+	if (size <= (ZU(1) << lg_max_lookup)) {
+		sc->lg_delta_lookup = lg_delta;
+	} else {
+		sc->lg_delta_lookup = 0;
+	}
+}
+
+static void
+size_classes(
+    /* Output. */
+    sc_data_t *sc_data,
+    /* Determined by the system. */
+    size_t lg_ptr_size, int lg_quantum,
+    /* Configuration decisions. */
+    int lg_tiny_min, int lg_max_lookup, int lg_page, int lg_ngroup) {
+	int ptr_bits = (1 << lg_ptr_size) * 8;
+	int ngroup = (1 << lg_ngroup);
+	int ntiny = 0;
+	int nlbins = 0;
+	int lg_tiny_maxclass = (unsigned)-1;
+	int nbins = 0;
+	int npsizes = 0;
+
+	int index = 0;
+
+	int ndelta = 0;
+	int lg_base = lg_tiny_min;
+	int lg_delta = lg_base;
+
+	/* Outputs that we update as we go. */
+	size_t lookup_maxclass = 0;
+	size_t small_maxclass = 0;
+	int lg_large_minclass = 0;
+	size_t large_maxclass = 0;
+
+	/* Tiny size classes. */
+	while (lg_base < lg_quantum) {
+		sc_t *sc = &sc_data->sc[index];
+		size_class(sc, lg_max_lookup, lg_page, lg_ngroup, index,
+		    lg_base, lg_delta, ndelta);
+		if (sc->lg_delta_lookup != 0) {
+			nlbins = index + 1;
+		}
+		if (sc->psz) {
+			npsizes++;
+		}
+		if (sc->bin) {
+			nbins++;
+		}
+		ntiny++;
+		/* Final written value is correct. */
+		lg_tiny_maxclass = lg_base;
+		index++;
+		lg_delta = lg_base;
+		lg_base++;
+	}
+
+	/* First non-tiny (pseudo) group. */
+	if (ntiny != 0) {
+		sc_t *sc = &sc_data->sc[index];
+		/*
+		 * See the note in sc.h; the first non-tiny size class has an
+		 * unusual encoding.
+		 */
+		lg_base--;
+		ndelta = 1;
+		size_class(sc, lg_max_lookup, lg_page, lg_ngroup, index,
+		    lg_base, lg_delta, ndelta);
+		index++;
+		lg_base++;
+		lg_delta++;
+		if (sc->psz) {
+			npsizes++;
+		}
+		if (sc->bin) {
+			nbins++;
+		}
+	}
+	while (ndelta < ngroup) {
+		sc_t *sc = &sc_data->sc[index];
+		size_class(sc, lg_max_lookup, lg_page, lg_ngroup, index,
+		    lg_base, lg_delta, ndelta);
+		index++;
+		ndelta++;
+		if (sc->psz) {
+			npsizes++;
+		}
+		if (sc->bin) {
+			nbins++;
+		}
+	}
+
+	/* All remaining groups. */
+	lg_base = lg_base + lg_ngroup;
+	while (lg_base < ptr_bits - 1) {
+		ndelta = 1;
+		int ndelta_limit;
+		if (lg_base == ptr_bits - 2) {
+			ndelta_limit = ngroup - 1;
+		} else {
+			ndelta_limit = ngroup;
+		}
+		while (ndelta <= ndelta_limit) {
+			sc_t *sc = &sc_data->sc[index];
+			size_class(sc, lg_max_lookup, lg_page, lg_ngroup, index,
+			    lg_base, lg_delta, ndelta);
+			if (sc->lg_delta_lookup != 0) {
+				nlbins = index + 1;
+				/* Final written value is correct. */
+				lookup_maxclass = (ZU(1) << lg_base)
+				    + (ZU(ndelta) << lg_delta);
+			}
+			if (sc->psz) {
+				npsizes++;
+			}
+			if (sc->bin) {
+				nbins++;
+				/* Final written value is correct. */
+				small_maxclass = (ZU(1) << lg_base)
+				    + (ZU(ndelta) << lg_delta);
+				if (lg_ngroup > 0) {
+					lg_large_minclass = lg_base + 1;
+				} else {
+					lg_large_minclass = lg_base + 2;
+				}
+			}
+			large_maxclass = (ZU(1) << lg_base)
+			    + (ZU(ndelta) << lg_delta);
+			index++;
+			ndelta++;
+		}
+		lg_base++;
+		lg_delta++;
+	}
+	/* Additional outputs. */
+	int nsizes = index;
+	unsigned lg_ceil_nsizes = lg_ceil(nsizes);
+
+	/* Fill in the output data. */
+	sc_data->ntiny = ntiny;
+	sc_data->nlbins = nlbins;
+	sc_data->nbins = nbins;
+	sc_data->nsizes = nsizes;
+	sc_data->lg_ceil_nsizes = lg_ceil_nsizes;
+	sc_data->npsizes = npsizes;
+	sc_data->lg_tiny_maxclass = lg_tiny_maxclass;
+	sc_data->lookup_maxclass = lookup_maxclass;
+	sc_data->small_maxclass = small_maxclass;
+	sc_data->lg_large_minclass = lg_large_minclass;
+	sc_data->large_minclass = (ZU(1) << lg_large_minclass);
+	sc_data->large_maxclass = large_maxclass;
+
+	/*
+	 * We compute these values in two ways:
+	 *   - Incrementally, as above.
+	 *   - In macros, in sc.h.
+	 * The computation is easier when done incrementally, but putting it in
+	 * a constant makes it available to the fast paths without having to
+	 * touch the extra global cacheline.  We assert, however, that the two
+	 * computations are equivalent.
+	 */
+	assert(sc_data->npsizes == SC_NPSIZES);
+	assert(sc_data->lg_tiny_maxclass == SC_LG_TINY_MAXCLASS);
+	assert(sc_data->small_maxclass == SC_SMALL_MAXCLASS);
+	assert(sc_data->large_minclass == SC_LARGE_MINCLASS);
+	assert(sc_data->lg_large_minclass == SC_LG_LARGE_MINCLASS);
+	assert(sc_data->large_maxclass == SC_LARGE_MAXCLASS);
+
+	/*
+	 * In the allocation fastpath, we want to assume that we can
+	 * unconditionally subtract the requested allocation size from
+	 * a ssize_t, and detect passing through 0 correctly.  This
+	 * results in optimal generated code.  For this to work, the
+	 * maximum allocation size must be less than SSIZE_MAX.
+	 */
+	assert(SC_LARGE_MAXCLASS < SSIZE_MAX);
+}
+
+void
+sc_data_init(sc_data_t *sc_data) {
+	size_classes(sc_data, LG_SIZEOF_PTR, LG_QUANTUM, SC_LG_TINY_MIN,
+	    SC_LG_MAX_LOOKUP, LG_PAGE, SC_LG_NGROUP);
+
+	sc_data->initialized = true;
+}
+
+static void
+sc_data_update_sc_slab_size(sc_t *sc, size_t reg_size, size_t pgs_guess) {
+	size_t min_pgs = reg_size / PAGE;
+	if (reg_size % PAGE != 0) {
+		min_pgs++;
+	}
+	/*
+	 * BITMAP_MAXBITS is actually determined by putting the smallest
+	 * possible size-class on one page, so this can never be 0.
+	 */
+	size_t max_pgs = BITMAP_MAXBITS * reg_size / PAGE;
+
+	assert(min_pgs <= max_pgs);
+	assert(min_pgs > 0);
+	assert(max_pgs >= 1);
+	if (pgs_guess < min_pgs) {
+		sc->pgs = (int)min_pgs;
+	} else if (pgs_guess > max_pgs) {
+		sc->pgs = (int)max_pgs;
+	} else {
+		sc->pgs = (int)pgs_guess;
+	}
+}
+
+void
+sc_data_update_slab_size(sc_data_t *data, size_t begin, size_t end, int pgs) {
+	assert(data->initialized);
+	for (int i = 0; i < data->nsizes; i++) {
+		sc_t *sc = &data->sc[i];
+		if (!sc->bin) {
+			break;
+		}
+		size_t reg_size = reg_size_compute(sc->lg_base, sc->lg_delta,
+		    sc->ndelta);
+		if (begin <= reg_size && reg_size <= end) {
+			sc_data_update_sc_slab_size(sc, reg_size, pgs);
+		}
+	}
+}
+
+void
+sc_boot(sc_data_t *data) {
+	sc_data_init(data);
+}
diff --git a/deps/jemalloc/src/sec.c b/deps/jemalloc/src/sec.c
new file mode 100644
index 0000000..df67559
--- /dev/null
+++ b/deps/jemalloc/src/sec.c
@@ -0,0 +1,422 @@
+#include "jemalloc/internal/jemalloc_preamble.h"
+#include "jemalloc/internal/jemalloc_internal_includes.h"
+
+#include "jemalloc/internal/sec.h"
+
+static edata_t *sec_alloc(tsdn_t *tsdn, pai_t *self, size_t size,
+    size_t alignment, bool zero, bool guarded, bool frequent_reuse,
+    bool *deferred_work_generated);
+static bool sec_expand(tsdn_t *tsdn, pai_t *self, edata_t *edata,
+    size_t old_size, size_t new_size, bool zero, bool *deferred_work_generated);
+static bool sec_shrink(tsdn_t *tsdn, pai_t *self, edata_t *edata,
+    size_t old_size, size_t new_size, bool *deferred_work_generated);
+static void sec_dalloc(tsdn_t *tsdn, pai_t *self, edata_t *edata,
+    bool *deferred_work_generated);
+
+static void
+sec_bin_init(sec_bin_t *bin) {
+	bin->being_batch_filled = false;
+	bin->bytes_cur = 0;
+	edata_list_active_init(&bin->freelist);
+}
+
+bool
+sec_init(tsdn_t *tsdn, sec_t *sec, base_t *base, pai_t *fallback,
+    const sec_opts_t *opts) {
+	assert(opts->max_alloc >= PAGE);
+
+	size_t max_alloc = PAGE_FLOOR(opts->max_alloc);
+	pszind_t npsizes = sz_psz2ind(max_alloc) + 1;
+
+	size_t sz_shards = opts->nshards * sizeof(sec_shard_t);
+	size_t sz_bins = opts->nshards * (size_t)npsizes * sizeof(sec_bin_t);
+	size_t sz_alloc = sz_shards + sz_bins;
+	void *dynalloc = base_alloc(tsdn, base, sz_alloc, CACHELINE);
+	if (dynalloc == NULL) {
+		return true;
+	}
+	sec_shard_t *shard_cur = (sec_shard_t *)dynalloc;
+	sec->shards = shard_cur;
+	sec_bin_t *bin_cur = (sec_bin_t *)&shard_cur[opts->nshards];
+	/* Just for asserts, below. */
+	sec_bin_t *bin_start = bin_cur;
+
+	for (size_t i = 0; i < opts->nshards; i++) {
+		sec_shard_t *shard = shard_cur;
+		shard_cur++;
+		bool err = malloc_mutex_init(&shard->mtx, "sec_shard",
+		    WITNESS_RANK_SEC_SHARD, malloc_mutex_rank_exclusive);
+		if (err) {
+			return true;
+		}
+		shard->enabled = true;
+		shard->bins = bin_cur;
+		for (pszind_t j = 0; j < npsizes; j++) {
+			sec_bin_init(&shard->bins[j]);
+			bin_cur++;
+		}
+		shard->bytes_cur = 0;
+		shard->to_flush_next = 0;
+	}
+	/*
+	 * Should have exactly matched the bin_start to the first unused byte
+	 * after the shards.
+	 */
+	assert((void *)shard_cur == (void *)bin_start);
+	/* And the last bin to use up the last bytes of the allocation. */
+	assert((char *)bin_cur == ((char *)dynalloc + sz_alloc));
+	sec->fallback = fallback;
+
+
+	sec->opts = *opts;
+	sec->npsizes = npsizes;
+
+	/*
+	 * Initialize these last so that an improper use of an SEC whose
+	 * initialization failed will segfault in an easy-to-spot way.
+	 */
+	sec->pai.alloc = &sec_alloc;
+	sec->pai.alloc_batch = &pai_alloc_batch_default;
+	sec->pai.expand = &sec_expand;
+	sec->pai.shrink = &sec_shrink;
+	sec->pai.dalloc = &sec_dalloc;
+	sec->pai.dalloc_batch = &pai_dalloc_batch_default;
+
+	return false;
+}
+
+static sec_shard_t *
+sec_shard_pick(tsdn_t *tsdn, sec_t *sec) {
+	/*
+	 * Eventually, we should implement affinity, tracking source shard using
+	 * the edata_t's newly freed up fields.  For now, just randomly
+	 * distribute across all shards.
+	 */
+	if (tsdn_null(tsdn)) {
+		return &sec->shards[0];
+	}
+	tsd_t *tsd = tsdn_tsd(tsdn);
+	uint8_t *idxp = tsd_sec_shardp_get(tsd);
+	if (*idxp == (uint8_t)-1) {
+		/*
+		 * First use; initialize using the trick from Daniel Lemire's
+		 * "A fast alternative to the modulo reduction.  Use a 64 bit
+		 * number to store 32 bits, since we'll deliberately overflow
+		 * when we multiply by the number of shards.
+		 */
+		uint64_t rand32 = prng_lg_range_u64(tsd_prng_statep_get(tsd), 32);
+		uint32_t idx =
+		    (uint32_t)((rand32 * (uint64_t)sec->opts.nshards) >> 32);
+		assert(idx < (uint32_t)sec->opts.nshards);
+		*idxp = (uint8_t)idx;
+	}
+	return &sec->shards[*idxp];
+}
+
+/*
+ * Perhaps surprisingly, this can be called on the alloc pathways; if we hit an
+ * empty cache, we'll try to fill it, which can push the shard over it's limit.
+ */
+static void
+sec_flush_some_and_unlock(tsdn_t *tsdn, sec_t *sec, sec_shard_t *shard) {
+	malloc_mutex_assert_owner(tsdn, &shard->mtx);
+	edata_list_active_t to_flush;
+	edata_list_active_init(&to_flush);
+	while (shard->bytes_cur > sec->opts.bytes_after_flush) {
+		/* Pick a victim. */
+		sec_bin_t *bin = &shard->bins[shard->to_flush_next];
+
+		/* Update our victim-picking state. */
+		shard->to_flush_next++;
+		if (shard->to_flush_next == sec->npsizes) {
+			shard->to_flush_next = 0;
+		}
+
+		assert(shard->bytes_cur >= bin->bytes_cur);
+		if (bin->bytes_cur != 0) {
+			shard->bytes_cur -= bin->bytes_cur;
+			bin->bytes_cur = 0;
+			edata_list_active_concat(&to_flush, &bin->freelist);
+		}
+		/*
+		 * Either bin->bytes_cur was 0, in which case we didn't touch
+		 * the bin list but it should be empty anyways (or else we
+		 * missed a bytes_cur update on a list modification), or it
+		 * *was* 0 and we emptied it ourselves.  Either way, it should
+		 * be empty now.
+		 */
+		assert(edata_list_active_empty(&bin->freelist));
+	}
+
+	malloc_mutex_unlock(tsdn, &shard->mtx);
+	bool deferred_work_generated = false;
+	pai_dalloc_batch(tsdn, sec->fallback, &to_flush,
+	    &deferred_work_generated);
+}
+
+static edata_t *
+sec_shard_alloc_locked(tsdn_t *tsdn, sec_t *sec, sec_shard_t *shard,
+    sec_bin_t *bin) {
+	malloc_mutex_assert_owner(tsdn, &shard->mtx);
+	if (!shard->enabled) {
+		return NULL;
+	}
+	edata_t *edata = edata_list_active_first(&bin->freelist);
+	if (edata != NULL) {
+		edata_list_active_remove(&bin->freelist, edata);
+		assert(edata_size_get(edata) <= bin->bytes_cur);
+		bin->bytes_cur -= edata_size_get(edata);
+		assert(edata_size_get(edata) <= shard->bytes_cur);
+		shard->bytes_cur -= edata_size_get(edata);
+	}
+	return edata;
+}
+
+static edata_t *
+sec_batch_fill_and_alloc(tsdn_t *tsdn, sec_t *sec, sec_shard_t *shard,
+    sec_bin_t *bin, size_t size) {
+	malloc_mutex_assert_not_owner(tsdn, &shard->mtx);
+
+	edata_list_active_t result;
+	edata_list_active_init(&result);
+	bool deferred_work_generated = false;
+	size_t nalloc = pai_alloc_batch(tsdn, sec->fallback, size,
+	    1 + sec->opts.batch_fill_extra, &result, &deferred_work_generated);
+
+	edata_t *ret = edata_list_active_first(&result);
+	if (ret != NULL) {
+		edata_list_active_remove(&result, ret);
+	}
+
+	malloc_mutex_lock(tsdn, &shard->mtx);
+	bin->being_batch_filled = false;
+	/*
+	 * Handle the easy case first: nothing to cache.  Note that this can
+	 * only happen in case of OOM, since sec_alloc checks the expected
+	 * number of allocs, and doesn't bother going down the batch_fill
+	 * pathway if there won't be anything left to cache.  So to be in this
+	 * code path, we must have asked for > 1 alloc, but only gotten 1 back.
+	 */
+	if (nalloc <= 1) {
+		malloc_mutex_unlock(tsdn, &shard->mtx);
+		return ret;
+	}
+
+	size_t new_cached_bytes = (nalloc - 1) * size;
+
+	edata_list_active_concat(&bin->freelist, &result);
+	bin->bytes_cur += new_cached_bytes;
+	shard->bytes_cur += new_cached_bytes;
+
+	if (shard->bytes_cur > sec->opts.max_bytes) {
+		sec_flush_some_and_unlock(tsdn, sec, shard);
+	} else {
+		malloc_mutex_unlock(tsdn, &shard->mtx);
+	}
+
+	return ret;
+}
+
+static edata_t *
+sec_alloc(tsdn_t *tsdn, pai_t *self, size_t size, size_t alignment, bool zero,
+    bool guarded, bool frequent_reuse, bool *deferred_work_generated) {
+	assert((size & PAGE_MASK) == 0);
+	assert(!guarded);
+
+	sec_t *sec = (sec_t *)self;
+
+	if (zero || alignment > PAGE || sec->opts.nshards == 0
+	    || size > sec->opts.max_alloc) {
+		return pai_alloc(tsdn, sec->fallback, size, alignment, zero,
+		    /* guarded */ false, frequent_reuse,
+		    deferred_work_generated);
+	}
+	pszind_t pszind = sz_psz2ind(size);
+	assert(pszind < sec->npsizes);
+
+	sec_shard_t *shard = sec_shard_pick(tsdn, sec);
+	sec_bin_t *bin = &shard->bins[pszind];
+	bool do_batch_fill = false;
+
+	malloc_mutex_lock(tsdn, &shard->mtx);
+	edata_t *edata = sec_shard_alloc_locked(tsdn, sec, shard, bin);
+	if (edata == NULL) {
+		if (!bin->being_batch_filled
+		    && sec->opts.batch_fill_extra > 0) {
+			bin->being_batch_filled = true;
+			do_batch_fill = true;
+		}
+	}
+	malloc_mutex_unlock(tsdn, &shard->mtx);
+	if (edata == NULL) {
+		if (do_batch_fill) {
+			edata = sec_batch_fill_and_alloc(tsdn, sec, shard, bin,
+			    size);
+		} else {
+			edata = pai_alloc(tsdn, sec->fallback, size, alignment,
+			    zero, /* guarded */ false, frequent_reuse,
+			    deferred_work_generated);
+		}
+	}
+	return edata;
+}
+
+static bool
+sec_expand(tsdn_t *tsdn, pai_t *self, edata_t *edata, size_t old_size,
+    size_t new_size, bool zero, bool *deferred_work_generated) {
+	sec_t *sec = (sec_t *)self;
+	return pai_expand(tsdn, sec->fallback, edata, old_size, new_size, zero,
+	    deferred_work_generated);
+}
+
+static bool
+sec_shrink(tsdn_t *tsdn, pai_t *self, edata_t *edata, size_t old_size,
+    size_t new_size, bool *deferred_work_generated) {
+	sec_t *sec = (sec_t *)self;
+	return pai_shrink(tsdn, sec->fallback, edata, old_size, new_size,
+	    deferred_work_generated);
+}
+
+static void
+sec_flush_all_locked(tsdn_t *tsdn, sec_t *sec, sec_shard_t *shard) {
+	malloc_mutex_assert_owner(tsdn, &shard->mtx);
+	shard->bytes_cur = 0;
+	edata_list_active_t to_flush;
+	edata_list_active_init(&to_flush);
+	for (pszind_t i = 0; i < sec->npsizes; i++) {
+		sec_bin_t *bin = &shard->bins[i];
+		bin->bytes_cur = 0;
+		edata_list_active_concat(&to_flush, &bin->freelist);
+	}
+
+	/*
+	 * Ordinarily we would try to avoid doing the batch deallocation while
+	 * holding the shard mutex, but the flush_all pathways only happen when
+	 * we're disabling the HPA or resetting the arena, both of which are
+	 * rare pathways.
+	 */
+	bool deferred_work_generated = false;
+	pai_dalloc_batch(tsdn, sec->fallback, &to_flush,
+	    &deferred_work_generated);
+}
+
+static void
+sec_shard_dalloc_and_unlock(tsdn_t *tsdn, sec_t *sec, sec_shard_t *shard,
+    edata_t *edata) {
+	malloc_mutex_assert_owner(tsdn, &shard->mtx);
+	assert(shard->bytes_cur <= sec->opts.max_bytes);
+	size_t size = edata_size_get(edata);
+	pszind_t pszind = sz_psz2ind(size);
+	assert(pszind < sec->npsizes);
+	/*
+	 * Prepending here results in LIFO allocation per bin, which seems
+	 * reasonable.
+	 */
+	sec_bin_t *bin = &shard->bins[pszind];
+	edata_list_active_prepend(&bin->freelist, edata);
+	bin->bytes_cur += size;
+	shard->bytes_cur += size;
+	if (shard->bytes_cur > sec->opts.max_bytes) {
+		/*
+		 * We've exceeded the shard limit.  We make two nods in the
+		 * direction of fragmentation avoidance: we flush everything in
+		 * the shard, rather than one particular bin, and we hold the
+		 * lock while flushing (in case one of the extents we flush is
+		 * highly preferred from a fragmentation-avoidance perspective
+		 * in the backing allocator).  This has the extra advantage of
+		 * not requiring advanced cache balancing strategies.
+		 */
+		sec_flush_some_and_unlock(tsdn, sec, shard);
+		malloc_mutex_assert_not_owner(tsdn, &shard->mtx);
+	} else {
+		malloc_mutex_unlock(tsdn, &shard->mtx);
+	}
+}
+
+static void
+sec_dalloc(tsdn_t *tsdn, pai_t *self, edata_t *edata,
+    bool *deferred_work_generated) {
+	sec_t *sec = (sec_t *)self;
+	if (sec->opts.nshards == 0
+	    || edata_size_get(edata) > sec->opts.max_alloc) {
+		pai_dalloc(tsdn, sec->fallback, edata,
+		    deferred_work_generated);
+		return;
+	}
+	sec_shard_t *shard = sec_shard_pick(tsdn, sec);
+	malloc_mutex_lock(tsdn, &shard->mtx);
+	if (shard->enabled) {
+		sec_shard_dalloc_and_unlock(tsdn, sec, shard, edata);
+	} else {
+		malloc_mutex_unlock(tsdn, &shard->mtx);
+		pai_dalloc(tsdn, sec->fallback, edata,
+		    deferred_work_generated);
+	}
+}
+
+void
+sec_flush(tsdn_t *tsdn, sec_t *sec) {
+	for (size_t i = 0; i < sec->opts.nshards; i++) {
+		malloc_mutex_lock(tsdn, &sec->shards[i].mtx);
+		sec_flush_all_locked(tsdn, sec, &sec->shards[i]);
+		malloc_mutex_unlock(tsdn, &sec->shards[i].mtx);
+	}
+}
+
+void
+sec_disable(tsdn_t *tsdn, sec_t *sec) {
+	for (size_t i = 0; i < sec->opts.nshards; i++) {
+		malloc_mutex_lock(tsdn, &sec->shards[i].mtx);
+		sec->shards[i].enabled = false;
+		sec_flush_all_locked(tsdn, sec, &sec->shards[i]);
+		malloc_mutex_unlock(tsdn, &sec->shards[i].mtx);
+	}
+}
+
+void
+sec_stats_merge(tsdn_t *tsdn, sec_t *sec, sec_stats_t *stats) {
+	size_t sum = 0;
+	for (size_t i = 0; i < sec->opts.nshards; i++) {
+		/*
+		 * We could save these lock acquisitions by making bytes_cur
+		 * atomic, but stats collection is rare anyways and we expect
+		 * the number and type of stats to get more interesting.
+		 */
+		malloc_mutex_lock(tsdn, &sec->shards[i].mtx);
+		sum += sec->shards[i].bytes_cur;
+		malloc_mutex_unlock(tsdn, &sec->shards[i].mtx);
+	}
+	stats->bytes += sum;
+}
+
+void
+sec_mutex_stats_read(tsdn_t *tsdn, sec_t *sec,
+    mutex_prof_data_t *mutex_prof_data) {
+	for (size_t i = 0; i < sec->opts.nshards; i++) {
+		malloc_mutex_lock(tsdn, &sec->shards[i].mtx);
+		malloc_mutex_prof_accum(tsdn, mutex_prof_data,
+		    &sec->shards[i].mtx);
+		malloc_mutex_unlock(tsdn, &sec->shards[i].mtx);
+	}
+}
+
+void
+sec_prefork2(tsdn_t *tsdn, sec_t *sec) {
+	for (size_t i = 0; i < sec->opts.nshards; i++) {
+		malloc_mutex_prefork(tsdn, &sec->shards[i].mtx);
+	}
+}
+
+void
+sec_postfork_parent(tsdn_t *tsdn, sec_t *sec) {
+	for (size_t i = 0; i < sec->opts.nshards; i++) {
+		malloc_mutex_postfork_parent(tsdn, &sec->shards[i].mtx);
+	}
+}
+
+void
+sec_postfork_child(tsdn_t *tsdn, sec_t *sec) {
+	for (size_t i = 0; i < sec->opts.nshards; i++) {
+		malloc_mutex_postfork_child(tsdn, &sec->shards[i].mtx);
+	}
+}
diff --git a/deps/jemalloc/src/stats.c b/deps/jemalloc/src/stats.c
new file mode 100644
index 0000000..efc70fd
--- /dev/null
+++ b/deps/jemalloc/src/stats.c
@@ -0,0 +1,1973 @@
+#include "jemalloc/internal/jemalloc_preamble.h"
+#include "jemalloc/internal/jemalloc_internal_includes.h"
+
+#include "jemalloc/internal/assert.h"
+#include "jemalloc/internal/ctl.h"
+#include "jemalloc/internal/emitter.h"
+#include "jemalloc/internal/fxp.h"
+#include "jemalloc/internal/mutex.h"
+#include "jemalloc/internal/mutex_prof.h"
+#include "jemalloc/internal/prof_stats.h"
+
+const char *global_mutex_names[mutex_prof_num_global_mutexes] = {
+#define OP(mtx) #mtx,
+	MUTEX_PROF_GLOBAL_MUTEXES
+#undef OP
+};
+
+const char *arena_mutex_names[mutex_prof_num_arena_mutexes] = {
+#define OP(mtx) #mtx,
+	MUTEX_PROF_ARENA_MUTEXES
+#undef OP
+};
+
+#define CTL_GET(n, v, t) do {						\
+	size_t sz = sizeof(t);						\
+	xmallctl(n, (void *)v, &sz, NULL, 0);				\
+} while (0)
+
+#define CTL_LEAF_PREPARE(mib, miblen, name) do {			\
+	assert(miblen < CTL_MAX_DEPTH);					\
+	size_t miblen_new = CTL_MAX_DEPTH;				\
+	xmallctlmibnametomib(mib, miblen, name, &miblen_new);		\
+	assert(miblen_new > miblen);					\
+} while (0)
+
+#define CTL_LEAF(mib, miblen, leaf, v, t) do {			\
+	assert(miblen < CTL_MAX_DEPTH);					\
+	size_t miblen_new = CTL_MAX_DEPTH;				\
+	size_t sz = sizeof(t);						\
+	xmallctlbymibname(mib, miblen, leaf, &miblen_new, (void *)v,	\
+	    &sz, NULL, 0);						\
+	assert(miblen_new == miblen + 1);				\
+} while (0)
+
+#define CTL_M2_GET(n, i, v, t) do {					\
+	size_t mib[CTL_MAX_DEPTH];					\
+	size_t miblen = sizeof(mib) / sizeof(size_t);			\
+	size_t sz = sizeof(t);						\
+	xmallctlnametomib(n, mib, &miblen);				\
+	mib[2] = (i);							\
+	xmallctlbymib(mib, miblen, (void *)v, &sz, NULL, 0);		\
+} while (0)
+
+/******************************************************************************/
+/* Data. */
+
+bool opt_stats_print = false;
+char opt_stats_print_opts[stats_print_tot_num_options+1] = "";
+
+int64_t opt_stats_interval = STATS_INTERVAL_DEFAULT;
+char opt_stats_interval_opts[stats_print_tot_num_options+1] = "";
+
+static counter_accum_t stats_interval_accumulated;
+/* Per thread batch accum size for stats_interval. */
+static uint64_t stats_interval_accum_batch;
+
+/******************************************************************************/
+
+static uint64_t
+rate_per_second(uint64_t value, uint64_t uptime_ns) {
+	uint64_t billion = 1000000000;
+	if (uptime_ns == 0 || value == 0) {
+		return 0;
+	}
+	if (uptime_ns < billion) {
+		return value;
+	} else {
+		uint64_t uptime_s = uptime_ns / billion;
+		return value / uptime_s;
+	}
+}
+
+/* Calculate x.yyy and output a string (takes a fixed sized char array). */
+static bool
+get_rate_str(uint64_t dividend, uint64_t divisor, char str[6]) {
+	if (divisor == 0 || dividend > divisor) {
+		/* The rate is not supposed to be greater than 1. */
+		return true;
+	}
+	if (dividend > 0) {
+		assert(UINT64_MAX / dividend >= 1000);
+	}
+
+	unsigned n = (unsigned)((dividend * 1000) / divisor);
+	if (n < 10) {
+		malloc_snprintf(str, 6, "0.00%u", n);
+	} else if (n < 100) {
+		malloc_snprintf(str, 6, "0.0%u", n);
+	} else if (n < 1000) {
+		malloc_snprintf(str, 6, "0.%u", n);
+	} else {
+		malloc_snprintf(str, 6, "1");
+	}
+
+	return false;
+}
+
+static void
+mutex_stats_init_cols(emitter_row_t *row, const char *table_name,
+    emitter_col_t *name,
+    emitter_col_t col_uint64_t[mutex_prof_num_uint64_t_counters],
+    emitter_col_t col_uint32_t[mutex_prof_num_uint32_t_counters]) {
+	mutex_prof_uint64_t_counter_ind_t k_uint64_t = 0;
+	mutex_prof_uint32_t_counter_ind_t k_uint32_t = 0;
+
+	emitter_col_t *col;
+
+	if (name != NULL) {
+		emitter_col_init(name, row);
+		name->justify = emitter_justify_left;
+		name->width = 21;
+		name->type = emitter_type_title;
+		name->str_val = table_name;
+	}
+
+#define WIDTH_uint32_t 12
+#define WIDTH_uint64_t 16
+#define OP(counter, counter_type, human, derived, base_counter)		\
+	col = &col_##counter_type[k_##counter_type];			\
+	++k_##counter_type;						\
+	emitter_col_init(col, row);					\
+	col->justify = emitter_justify_right;				\
+	col->width = derived ? 8 : WIDTH_##counter_type;		\
+	col->type = emitter_type_title;					\
+	col->str_val = human;
+	MUTEX_PROF_COUNTERS
+#undef OP
+#undef WIDTH_uint32_t
+#undef WIDTH_uint64_t
+	col_uint64_t[mutex_counter_total_wait_time_ps].width = 10;
+}
+
+static void
+mutex_stats_read_global(size_t mib[], size_t miblen, const char *name,
+    emitter_col_t *col_name,
+    emitter_col_t col_uint64_t[mutex_prof_num_uint64_t_counters],
+    emitter_col_t col_uint32_t[mutex_prof_num_uint32_t_counters],
+    uint64_t uptime) {
+	CTL_LEAF_PREPARE(mib, miblen, name);
+	size_t miblen_name = miblen + 1;
+
+	col_name->str_val = name;
+
+	emitter_col_t *dst;
+#define EMITTER_TYPE_uint32_t emitter_type_uint32
+#define EMITTER_TYPE_uint64_t emitter_type_uint64
+#define OP(counter, counter_type, human, derived, base_counter)		\
+	dst = &col_##counter_type[mutex_counter_##counter];		\
+	dst->type = EMITTER_TYPE_##counter_type;			\
+	if (!derived) {							\
+		CTL_LEAF(mib, miblen_name, #counter,			\
+		    (counter_type *)&dst->bool_val, counter_type);	\
+	} else {							\
+		emitter_col_t *base =					\
+		    &col_##counter_type[mutex_counter_##base_counter];	\
+		dst->counter_type##_val =				\
+		    (counter_type)rate_per_second(			\
+		    base->counter_type##_val, uptime);			\
+	}
+	MUTEX_PROF_COUNTERS
+#undef OP
+#undef EMITTER_TYPE_uint32_t
+#undef EMITTER_TYPE_uint64_t
+}
+
+static void
+mutex_stats_read_arena(size_t mib[], size_t miblen, const char *name,
+    emitter_col_t *col_name,
+    emitter_col_t col_uint64_t[mutex_prof_num_uint64_t_counters],
+    emitter_col_t col_uint32_t[mutex_prof_num_uint32_t_counters],
+    uint64_t uptime) {
+	CTL_LEAF_PREPARE(mib, miblen, name);
+	size_t miblen_name = miblen + 1;
+
+	col_name->str_val = name;
+
+	emitter_col_t *dst;
+#define EMITTER_TYPE_uint32_t emitter_type_uint32
+#define EMITTER_TYPE_uint64_t emitter_type_uint64
+#define OP(counter, counter_type, human, derived, base_counter)		\
+	dst = &col_##counter_type[mutex_counter_##counter];		\
+	dst->type = EMITTER_TYPE_##counter_type;			\
+	if (!derived) {							\
+		CTL_LEAF(mib, miblen_name, #counter,			\
+		    (counter_type *)&dst->bool_val, counter_type);	\
+	} else {							\
+		emitter_col_t *base =					\
+		    &col_##counter_type[mutex_counter_##base_counter];	\
+		dst->counter_type##_val =				\
+		    (counter_type)rate_per_second(			\
+		    base->counter_type##_val, uptime);			\
+	}
+	MUTEX_PROF_COUNTERS
+#undef OP
+#undef EMITTER_TYPE_uint32_t
+#undef EMITTER_TYPE_uint64_t
+}
+
+static void
+mutex_stats_read_arena_bin(size_t mib[], size_t miblen,
+    emitter_col_t col_uint64_t[mutex_prof_num_uint64_t_counters],
+    emitter_col_t col_uint32_t[mutex_prof_num_uint32_t_counters],
+    uint64_t uptime) {
+	CTL_LEAF_PREPARE(mib, miblen, "mutex");
+	size_t miblen_mutex = miblen + 1;
+
+	emitter_col_t *dst;
+
+#define EMITTER_TYPE_uint32_t emitter_type_uint32
+#define EMITTER_TYPE_uint64_t emitter_type_uint64
+#define OP(counter, counter_type, human, derived, base_counter)		\
+	dst = &col_##counter_type[mutex_counter_##counter];		\
+	dst->type = EMITTER_TYPE_##counter_type;			\
+	if (!derived) {							\
+		CTL_LEAF(mib, miblen_mutex, #counter,			\
+		    (counter_type *)&dst->bool_val, counter_type);	\
+	} else {							\
+		emitter_col_t *base =					\
+		    &col_##counter_type[mutex_counter_##base_counter];	\
+		dst->counter_type##_val =				\
+		    (counter_type)rate_per_second(			\
+		    base->counter_type##_val, uptime);			\
+	}
+	MUTEX_PROF_COUNTERS
+#undef OP
+#undef EMITTER_TYPE_uint32_t
+#undef EMITTER_TYPE_uint64_t
+}
+
+/* "row" can be NULL to avoid emitting in table mode. */
+static void
+mutex_stats_emit(emitter_t *emitter, emitter_row_t *row,
+    emitter_col_t col_uint64_t[mutex_prof_num_uint64_t_counters],
+    emitter_col_t col_uint32_t[mutex_prof_num_uint32_t_counters]) {
+	if (row != NULL) {
+		emitter_table_row(emitter, row);
+	}
+
+	mutex_prof_uint64_t_counter_ind_t k_uint64_t = 0;
+	mutex_prof_uint32_t_counter_ind_t k_uint32_t = 0;
+
+	emitter_col_t *col;
+
+#define EMITTER_TYPE_uint32_t emitter_type_uint32
+#define EMITTER_TYPE_uint64_t emitter_type_uint64
+#define OP(counter, type, human, derived, base_counter)		\
+	if (!derived) {                    \
+		col = &col_##type[k_##type];                        \
+		++k_##type;                            \
+		emitter_json_kv(emitter, #counter, EMITTER_TYPE_##type,        \
+		    (const void *)&col->bool_val); \
+	}
+	MUTEX_PROF_COUNTERS;
+#undef OP
+#undef EMITTER_TYPE_uint32_t
+#undef EMITTER_TYPE_uint64_t
+}
+
+#define COL_DECLARE(column_name)					\
+	emitter_col_t col_##column_name;
+
+#define COL_INIT(row_name, column_name, left_or_right, col_width, etype)\
+	emitter_col_init(&col_##column_name, &row_name);		\
+	col_##column_name.justify = emitter_justify_##left_or_right;	\
+	col_##column_name.width = col_width;				\
+	col_##column_name.type = emitter_type_##etype;
+
+#define COL(row_name, column_name, left_or_right, col_width, etype)	\
+	COL_DECLARE(column_name);					\
+	COL_INIT(row_name, column_name, left_or_right, col_width, etype)
+
+#define COL_HDR_DECLARE(column_name)					\
+	COL_DECLARE(column_name);					\
+	emitter_col_t header_##column_name;
+
+#define COL_HDR_INIT(row_name, column_name, human, left_or_right,	\
+	col_width, etype)						\
+	COL_INIT(row_name, column_name, left_or_right, col_width, etype)\
+	emitter_col_init(&header_##column_name, &header_##row_name);	\
+	header_##column_name.justify = emitter_justify_##left_or_right;	\
+	header_##column_name.width = col_width;				\
+	header_##column_name.type = emitter_type_title;			\
+	header_##column_name.str_val = human ? human : #column_name;
+
+#define COL_HDR(row_name, column_name, human, left_or_right, col_width,	\
+    etype)								\
+	COL_HDR_DECLARE(column_name)					\
+	COL_HDR_INIT(row_name, column_name, human, left_or_right,	\
+	    col_width, etype)
+
+JEMALLOC_COLD
+static void
+stats_arena_bins_print(emitter_t *emitter, bool mutex, unsigned i,
+    uint64_t uptime) {
+	size_t page;
+	bool in_gap, in_gap_prev;
+	unsigned nbins, j;
+
+	CTL_GET("arenas.page", &page, size_t);
+
+	CTL_GET("arenas.nbins", &nbins, unsigned);
+
+	emitter_row_t header_row;
+	emitter_row_init(&header_row);
+
+	emitter_row_t row;
+	emitter_row_init(&row);
+
+	bool prof_stats_on = config_prof && opt_prof && opt_prof_stats
+	    && i == MALLCTL_ARENAS_ALL;
+
+	COL_HDR(row, size, NULL, right, 20, size)
+	COL_HDR(row, ind, NULL, right, 4, unsigned)
+	COL_HDR(row, allocated, NULL, right, 13, uint64)
+	COL_HDR(row, nmalloc, NULL, right, 13, uint64)
+	COL_HDR(row, nmalloc_ps, "(#/sec)", right, 8, uint64)
+	COL_HDR(row, ndalloc, NULL, right, 13, uint64)
+	COL_HDR(row, ndalloc_ps, "(#/sec)", right, 8, uint64)
+	COL_HDR(row, nrequests, NULL, right, 13, uint64)
+	COL_HDR(row, nrequests_ps, "(#/sec)", right, 10, uint64)
+	COL_HDR_DECLARE(prof_live_requested);
+	COL_HDR_DECLARE(prof_live_count);
+	COL_HDR_DECLARE(prof_accum_requested);
+	COL_HDR_DECLARE(prof_accum_count);
+	if (prof_stats_on) {
+		COL_HDR_INIT(row, prof_live_requested, NULL, right, 21, uint64)
+		COL_HDR_INIT(row, prof_live_count, NULL, right, 17, uint64)
+		COL_HDR_INIT(row, prof_accum_requested, NULL, right, 21, uint64)
+		COL_HDR_INIT(row, prof_accum_count, NULL, right, 17, uint64)
+	}
+	COL_HDR(row, nshards, NULL, right, 9, unsigned)
+	COL_HDR(row, curregs, NULL, right, 13, size)
+	COL_HDR(row, curslabs, NULL, right, 13, size)
+	COL_HDR(row, nonfull_slabs, NULL, right, 15, size)
+	COL_HDR(row, regs, NULL, right, 5, unsigned)
+	COL_HDR(row, pgs, NULL, right, 4, size)
+	/* To buffer a right- and left-justified column. */
+	COL_HDR(row, justify_spacer, NULL, right, 1, title)
+	COL_HDR(row, util, NULL, right, 6, title)
+	COL_HDR(row, nfills, NULL, right, 13, uint64)
+	COL_HDR(row, nfills_ps, "(#/sec)", right, 8, uint64)
+	COL_HDR(row, nflushes, NULL, right, 13, uint64)
+	COL_HDR(row, nflushes_ps, "(#/sec)", right, 8, uint64)
+	COL_HDR(row, nslabs, NULL, right, 13, uint64)
+	COL_HDR(row, nreslabs, NULL, right, 13, uint64)
+	COL_HDR(row, nreslabs_ps, "(#/sec)", right, 8, uint64)
+
+	/* Don't want to actually print the name. */
+	header_justify_spacer.str_val = " ";
+	col_justify_spacer.str_val = " ";
+
+	emitter_col_t col_mutex64[mutex_prof_num_uint64_t_counters];
+	emitter_col_t col_mutex32[mutex_prof_num_uint32_t_counters];
+
+	emitter_col_t header_mutex64[mutex_prof_num_uint64_t_counters];
+	emitter_col_t header_mutex32[mutex_prof_num_uint32_t_counters];
+
+	if (mutex) {
+		mutex_stats_init_cols(&row, NULL, NULL, col_mutex64,
+		    col_mutex32);
+		mutex_stats_init_cols(&header_row, NULL, NULL, header_mutex64,
+		    header_mutex32);
+	}
+
+	/*
+	 * We print a "bins:" header as part of the table row; we need to adjust
+	 * the header size column to compensate.
+	 */
+	header_size.width -=5;
+	emitter_table_printf(emitter, "bins:");
+	emitter_table_row(emitter, &header_row);
+	emitter_json_array_kv_begin(emitter, "bins");
+
+	size_t stats_arenas_mib[CTL_MAX_DEPTH];
+	CTL_LEAF_PREPARE(stats_arenas_mib, 0, "stats.arenas");
+	stats_arenas_mib[2] = i;
+	CTL_LEAF_PREPARE(stats_arenas_mib, 3, "bins");
+
+	size_t arenas_bin_mib[CTL_MAX_DEPTH];
+	CTL_LEAF_PREPARE(arenas_bin_mib, 0, "arenas.bin");
+
+	size_t prof_stats_mib[CTL_MAX_DEPTH];
+	if (prof_stats_on) {
+		CTL_LEAF_PREPARE(prof_stats_mib, 0, "prof.stats.bins");
+	}
+
+	for (j = 0, in_gap = false; j < nbins; j++) {
+		uint64_t nslabs;
+		size_t reg_size, slab_size, curregs;
+		size_t curslabs;
+		size_t nonfull_slabs;
+		uint32_t nregs, nshards;
+		uint64_t nmalloc, ndalloc, nrequests, nfills, nflushes;
+		uint64_t nreslabs;
+		prof_stats_t prof_live;
+		prof_stats_t prof_accum;
+
+		stats_arenas_mib[4] = j;
+		arenas_bin_mib[2] = j;
+
+		CTL_LEAF(stats_arenas_mib, 5, "nslabs", &nslabs, uint64_t);
+
+		if (prof_stats_on) {
+			prof_stats_mib[3] = j;
+			CTL_LEAF(prof_stats_mib, 4, "live", &prof_live,
+			    prof_stats_t);
+			CTL_LEAF(prof_stats_mib, 4, "accum", &prof_accum,
+			    prof_stats_t);
+		}
+
+		in_gap_prev = in_gap;
+		if (prof_stats_on) {
+			in_gap = (nslabs == 0 && prof_accum.count == 0);
+		} else {
+			in_gap = (nslabs == 0);
+		}
+
+		if (in_gap_prev && !in_gap) {
+			emitter_table_printf(emitter,
+			    "                     ---\n");
+		}
+
+		if (in_gap && !emitter_outputs_json(emitter)) {
+			continue;
+		}
+
+		CTL_LEAF(arenas_bin_mib, 3, "size", &reg_size, size_t);
+		CTL_LEAF(arenas_bin_mib, 3, "nregs", &nregs, uint32_t);
+		CTL_LEAF(arenas_bin_mib, 3, "slab_size", &slab_size, size_t);
+		CTL_LEAF(arenas_bin_mib, 3, "nshards", &nshards, uint32_t);
+		CTL_LEAF(stats_arenas_mib, 5, "nmalloc", &nmalloc, uint64_t);
+		CTL_LEAF(stats_arenas_mib, 5, "ndalloc", &ndalloc, uint64_t);
+		CTL_LEAF(stats_arenas_mib, 5, "curregs", &curregs, size_t);
+		CTL_LEAF(stats_arenas_mib, 5, "nrequests", &nrequests,
+		    uint64_t);
+		CTL_LEAF(stats_arenas_mib, 5, "nfills", &nfills, uint64_t);
+		CTL_LEAF(stats_arenas_mib, 5, "nflushes", &nflushes, uint64_t);
+		CTL_LEAF(stats_arenas_mib, 5, "nreslabs", &nreslabs, uint64_t);
+		CTL_LEAF(stats_arenas_mib, 5, "curslabs", &curslabs, size_t);
+		CTL_LEAF(stats_arenas_mib, 5, "nonfull_slabs", &nonfull_slabs,
+		    size_t);
+
+		if (mutex) {
+			mutex_stats_read_arena_bin(stats_arenas_mib, 5,
+			    col_mutex64, col_mutex32, uptime);
+		}
+
+		emitter_json_object_begin(emitter);
+		emitter_json_kv(emitter, "nmalloc", emitter_type_uint64,
+		    &nmalloc);
+		emitter_json_kv(emitter, "ndalloc", emitter_type_uint64,
+		    &ndalloc);
+		emitter_json_kv(emitter, "curregs", emitter_type_size,
+		    &curregs);
+		emitter_json_kv(emitter, "nrequests", emitter_type_uint64,
+		    &nrequests);
+		if (prof_stats_on) {
+			emitter_json_kv(emitter, "prof_live_requested",
+			    emitter_type_uint64, &prof_live.req_sum);
+			emitter_json_kv(emitter, "prof_live_count",
+			    emitter_type_uint64, &prof_live.count);
+			emitter_json_kv(emitter, "prof_accum_requested",
+			    emitter_type_uint64, &prof_accum.req_sum);
+			emitter_json_kv(emitter, "prof_accum_count",
+			    emitter_type_uint64, &prof_accum.count);
+		}
+		emitter_json_kv(emitter, "nfills", emitter_type_uint64,
+		    &nfills);
+		emitter_json_kv(emitter, "nflushes", emitter_type_uint64,
+		    &nflushes);
+		emitter_json_kv(emitter, "nreslabs", emitter_type_uint64,
+		    &nreslabs);
+		emitter_json_kv(emitter, "curslabs", emitter_type_size,
+		    &curslabs);
+		emitter_json_kv(emitter, "nonfull_slabs", emitter_type_size,
+		    &nonfull_slabs);
+		if (mutex) {
+			emitter_json_object_kv_begin(emitter, "mutex");
+			mutex_stats_emit(emitter, NULL, col_mutex64,
+			    col_mutex32);
+			emitter_json_object_end(emitter);
+		}
+		emitter_json_object_end(emitter);
+
+		size_t availregs = nregs * curslabs;
+		char util[6];
+		if (get_rate_str((uint64_t)curregs, (uint64_t)availregs, util))
+		{
+			if (availregs == 0) {
+				malloc_snprintf(util, sizeof(util), "1");
+			} else if (curregs > availregs) {
+				/*
+				 * Race detected: the counters were read in
+				 * separate mallctl calls and concurrent
+				 * operations happened in between.  In this case
+				 * no meaningful utilization can be computed.
+				 */
+				malloc_snprintf(util, sizeof(util), " race");
+			} else {
+				not_reached();
+			}
+		}
+
+		col_size.size_val = reg_size;
+		col_ind.unsigned_val = j;
+		col_allocated.size_val = curregs * reg_size;
+		col_nmalloc.uint64_val = nmalloc;
+		col_nmalloc_ps.uint64_val = rate_per_second(nmalloc, uptime);
+		col_ndalloc.uint64_val = ndalloc;
+		col_ndalloc_ps.uint64_val = rate_per_second(ndalloc, uptime);
+		col_nrequests.uint64_val = nrequests;
+		col_nrequests_ps.uint64_val = rate_per_second(nrequests, uptime);
+		if (prof_stats_on) {
+			col_prof_live_requested.uint64_val = prof_live.req_sum;
+			col_prof_live_count.uint64_val = prof_live.count;
+			col_prof_accum_requested.uint64_val =
+			    prof_accum.req_sum;
+			col_prof_accum_count.uint64_val = prof_accum.count;
+		}
+		col_nshards.unsigned_val = nshards;
+		col_curregs.size_val = curregs;
+		col_curslabs.size_val = curslabs;
+		col_nonfull_slabs.size_val = nonfull_slabs;
+		col_regs.unsigned_val = nregs;
+		col_pgs.size_val = slab_size / page;
+		col_util.str_val = util;
+		col_nfills.uint64_val = nfills;
+		col_nfills_ps.uint64_val = rate_per_second(nfills, uptime);
+		col_nflushes.uint64_val = nflushes;
+		col_nflushes_ps.uint64_val = rate_per_second(nflushes, uptime);
+		col_nslabs.uint64_val = nslabs;
+		col_nreslabs.uint64_val = nreslabs;
+		col_nreslabs_ps.uint64_val = rate_per_second(nreslabs, uptime);
+
+		/*
+		 * Note that mutex columns were initialized above, if mutex ==
+		 * true.
+		 */
+
+		emitter_table_row(emitter, &row);
+	}
+	emitter_json_array_end(emitter); /* Close "bins". */
+
+	if (in_gap) {
+		emitter_table_printf(emitter, "                     ---\n");
+	}
+}
+
+JEMALLOC_COLD
+static void
+stats_arena_lextents_print(emitter_t *emitter, unsigned i, uint64_t uptime) {
+	unsigned nbins, nlextents, j;
+	bool in_gap, in_gap_prev;
+
+	CTL_GET("arenas.nbins", &nbins, unsigned);
+	CTL_GET("arenas.nlextents", &nlextents, unsigned);
+
+	emitter_row_t header_row;
+	emitter_row_init(&header_row);
+	emitter_row_t row;
+	emitter_row_init(&row);
+
+	bool prof_stats_on = config_prof && opt_prof && opt_prof_stats
+	    && i == MALLCTL_ARENAS_ALL;
+
+	COL_HDR(row, size, NULL, right, 20, size)
+	COL_HDR(row, ind, NULL, right, 4, unsigned)
+	COL_HDR(row, allocated, NULL, right, 13, size)
+	COL_HDR(row, nmalloc, NULL, right, 13, uint64)
+	COL_HDR(row, nmalloc_ps, "(#/sec)", right, 8, uint64)
+	COL_HDR(row, ndalloc, NULL, right, 13, uint64)
+	COL_HDR(row, ndalloc_ps, "(#/sec)", right, 8, uint64)
+	COL_HDR(row, nrequests, NULL, right, 13, uint64)
+	COL_HDR(row, nrequests_ps, "(#/sec)", right, 8, uint64)
+	COL_HDR_DECLARE(prof_live_requested)
+	COL_HDR_DECLARE(prof_live_count)
+	COL_HDR_DECLARE(prof_accum_requested)
+	COL_HDR_DECLARE(prof_accum_count)
+	if (prof_stats_on) {
+		COL_HDR_INIT(row, prof_live_requested, NULL, right, 21, uint64)
+		COL_HDR_INIT(row, prof_live_count, NULL, right, 17, uint64)
+		COL_HDR_INIT(row, prof_accum_requested, NULL, right, 21, uint64)
+		COL_HDR_INIT(row, prof_accum_count, NULL, right, 17, uint64)
+	}
+	COL_HDR(row, curlextents, NULL, right, 13, size)
+
+	/* As with bins, we label the large extents table. */
+	header_size.width -= 6;
+	emitter_table_printf(emitter, "large:");
+	emitter_table_row(emitter, &header_row);
+	emitter_json_array_kv_begin(emitter, "lextents");
+
+	size_t stats_arenas_mib[CTL_MAX_DEPTH];
+	CTL_LEAF_PREPARE(stats_arenas_mib, 0, "stats.arenas");
+	stats_arenas_mib[2] = i;
+	CTL_LEAF_PREPARE(stats_arenas_mib, 3, "lextents");
+
+	size_t arenas_lextent_mib[CTL_MAX_DEPTH];
+	CTL_LEAF_PREPARE(arenas_lextent_mib, 0, "arenas.lextent");
+
+	size_t prof_stats_mib[CTL_MAX_DEPTH];
+	if (prof_stats_on) {
+		CTL_LEAF_PREPARE(prof_stats_mib, 0, "prof.stats.lextents");
+	}
+
+	for (j = 0, in_gap = false; j < nlextents; j++) {
+		uint64_t nmalloc, ndalloc, nrequests;
+		size_t lextent_size, curlextents;
+		prof_stats_t prof_live;
+		prof_stats_t prof_accum;
+
+		stats_arenas_mib[4] = j;
+		arenas_lextent_mib[2] = j;
+
+		CTL_LEAF(stats_arenas_mib, 5, "nmalloc", &nmalloc, uint64_t);
+		CTL_LEAF(stats_arenas_mib, 5, "ndalloc", &ndalloc, uint64_t);
+		CTL_LEAF(stats_arenas_mib, 5, "nrequests", &nrequests,
+		    uint64_t);
+
+		in_gap_prev = in_gap;
+		in_gap = (nrequests == 0);
+
+		if (in_gap_prev && !in_gap) {
+			emitter_table_printf(emitter,
+			    "                     ---\n");
+		}
+
+		CTL_LEAF(arenas_lextent_mib, 3, "size", &lextent_size, size_t);
+		CTL_LEAF(stats_arenas_mib, 5, "curlextents", &curlextents,
+		    size_t);
+
+		if (prof_stats_on) {
+			prof_stats_mib[3] = j;
+			CTL_LEAF(prof_stats_mib, 4, "live", &prof_live,
+			    prof_stats_t);
+			CTL_LEAF(prof_stats_mib, 4, "accum", &prof_accum,
+			    prof_stats_t);
+		}
+
+		emitter_json_object_begin(emitter);
+		if (prof_stats_on) {
+			emitter_json_kv(emitter, "prof_live_requested",
+			    emitter_type_uint64, &prof_live.req_sum);
+			emitter_json_kv(emitter, "prof_live_count",
+			    emitter_type_uint64, &prof_live.count);
+			emitter_json_kv(emitter, "prof_accum_requested",
+			    emitter_type_uint64, &prof_accum.req_sum);
+			emitter_json_kv(emitter, "prof_accum_count",
+			    emitter_type_uint64, &prof_accum.count);
+		}
+		emitter_json_kv(emitter, "curlextents", emitter_type_size,
+		    &curlextents);
+		emitter_json_object_end(emitter);
+
+		col_size.size_val = lextent_size;
+		col_ind.unsigned_val = nbins + j;
+		col_allocated.size_val = curlextents * lextent_size;
+		col_nmalloc.uint64_val = nmalloc;
+		col_nmalloc_ps.uint64_val = rate_per_second(nmalloc, uptime);
+		col_ndalloc.uint64_val = ndalloc;
+		col_ndalloc_ps.uint64_val = rate_per_second(ndalloc, uptime);
+		col_nrequests.uint64_val = nrequests;
+		col_nrequests_ps.uint64_val = rate_per_second(nrequests, uptime);
+		if (prof_stats_on) {
+			col_prof_live_requested.uint64_val = prof_live.req_sum;
+			col_prof_live_count.uint64_val = prof_live.count;
+			col_prof_accum_requested.uint64_val =
+			    prof_accum.req_sum;
+			col_prof_accum_count.uint64_val = prof_accum.count;
+		}
+		col_curlextents.size_val = curlextents;
+
+		if (!in_gap) {
+			emitter_table_row(emitter, &row);
+		}
+	}
+	emitter_json_array_end(emitter); /* Close "lextents". */
+	if (in_gap) {
+		emitter_table_printf(emitter, "                     ---\n");
+	}
+}
+
+JEMALLOC_COLD
+static void
+stats_arena_extents_print(emitter_t *emitter, unsigned i) {
+	unsigned j;
+	bool in_gap, in_gap_prev;
+	emitter_row_t header_row;
+	emitter_row_init(&header_row);
+	emitter_row_t row;
+	emitter_row_init(&row);
+
+	COL_HDR(row, size, NULL, right, 20, size)
+	COL_HDR(row, ind, NULL, right, 4, unsigned)
+	COL_HDR(row, ndirty, NULL, right, 13, size)
+	COL_HDR(row, dirty, NULL, right, 13, size)
+	COL_HDR(row, nmuzzy, NULL, right, 13, size)
+	COL_HDR(row, muzzy, NULL, right, 13, size)
+	COL_HDR(row, nretained, NULL, right, 13, size)
+	COL_HDR(row, retained, NULL, right, 13, size)
+	COL_HDR(row, ntotal, NULL, right, 13, size)
+	COL_HDR(row, total, NULL, right, 13, size)
+
+	/* Label this section. */
+	header_size.width -= 8;
+	emitter_table_printf(emitter, "extents:");
+	emitter_table_row(emitter, &header_row);
+	emitter_json_array_kv_begin(emitter, "extents");
+
+	size_t stats_arenas_mib[CTL_MAX_DEPTH];
+	CTL_LEAF_PREPARE(stats_arenas_mib, 0, "stats.arenas");
+	stats_arenas_mib[2] = i;
+	CTL_LEAF_PREPARE(stats_arenas_mib, 3, "extents");
+
+	in_gap = false;
+	for (j = 0; j < SC_NPSIZES; j++) {
+		size_t ndirty, nmuzzy, nretained, total, dirty_bytes,
+		    muzzy_bytes, retained_bytes, total_bytes;
+		stats_arenas_mib[4] = j;
+
+		CTL_LEAF(stats_arenas_mib, 5, "ndirty", &ndirty, size_t);
+		CTL_LEAF(stats_arenas_mib, 5, "nmuzzy", &nmuzzy, size_t);
+		CTL_LEAF(stats_arenas_mib, 5, "nretained", &nretained, size_t);
+		CTL_LEAF(stats_arenas_mib, 5, "dirty_bytes", &dirty_bytes,
+		    size_t);
+		CTL_LEAF(stats_arenas_mib, 5, "muzzy_bytes", &muzzy_bytes,
+		    size_t);
+		CTL_LEAF(stats_arenas_mib, 5, "retained_bytes",
+		    &retained_bytes, size_t);
+
+		total = ndirty + nmuzzy + nretained;
+		total_bytes = dirty_bytes + muzzy_bytes + retained_bytes;
+
+		in_gap_prev = in_gap;
+		in_gap = (total == 0);
+
+		if (in_gap_prev && !in_gap) {
+			emitter_table_printf(emitter,
+			    "                     ---\n");
+		}
+
+		emitter_json_object_begin(emitter);
+		emitter_json_kv(emitter, "ndirty", emitter_type_size, &ndirty);
+		emitter_json_kv(emitter, "nmuzzy", emitter_type_size, &nmuzzy);
+		emitter_json_kv(emitter, "nretained", emitter_type_size,
+		    &nretained);
+
+		emitter_json_kv(emitter, "dirty_bytes", emitter_type_size,
+		    &dirty_bytes);
+		emitter_json_kv(emitter, "muzzy_bytes", emitter_type_size,
+		    &muzzy_bytes);
+		emitter_json_kv(emitter, "retained_bytes", emitter_type_size,
+		    &retained_bytes);
+		emitter_json_object_end(emitter);
+
+		col_size.size_val = sz_pind2sz(j);
+		col_ind.size_val = j;
+		col_ndirty.size_val = ndirty;
+		col_dirty.size_val = dirty_bytes;
+		col_nmuzzy.size_val = nmuzzy;
+		col_muzzy.size_val = muzzy_bytes;
+		col_nretained.size_val = nretained;
+		col_retained.size_val = retained_bytes;
+		col_ntotal.size_val = total;
+		col_total.size_val = total_bytes;
+
+		if (!in_gap) {
+			emitter_table_row(emitter, &row);
+		}
+	}
+	emitter_json_array_end(emitter); /* Close "extents". */
+	if (in_gap) {
+		emitter_table_printf(emitter, "                     ---\n");
+	}
+}
+
+static void
+stats_arena_hpa_shard_print(emitter_t *emitter, unsigned i, uint64_t uptime) {
+	emitter_row_t header_row;
+	emitter_row_init(&header_row);
+	emitter_row_t row;
+	emitter_row_init(&row);
+
+	uint64_t npurge_passes;
+	uint64_t npurges;
+	uint64_t nhugifies;
+	uint64_t ndehugifies;
+
+	CTL_M2_GET("stats.arenas.0.hpa_shard.npurge_passes",
+	    i, &npurge_passes, uint64_t);
+	CTL_M2_GET("stats.arenas.0.hpa_shard.npurges",
+	    i, &npurges, uint64_t);
+	CTL_M2_GET("stats.arenas.0.hpa_shard.nhugifies",
+	    i, &nhugifies, uint64_t);
+	CTL_M2_GET("stats.arenas.0.hpa_shard.ndehugifies",
+	    i, &ndehugifies, uint64_t);
+
+	size_t npageslabs_huge;
+	size_t nactive_huge;
+	size_t ndirty_huge;
+
+	size_t npageslabs_nonhuge;
+	size_t nactive_nonhuge;
+	size_t ndirty_nonhuge;
+	size_t nretained_nonhuge;
+
+	size_t sec_bytes;
+	CTL_M2_GET("stats.arenas.0.hpa_sec_bytes", i, &sec_bytes, size_t);
+	emitter_kv(emitter, "sec_bytes", "Bytes in small extent cache",
+	    emitter_type_size, &sec_bytes);
+
+	/* First, global stats. */
+	emitter_table_printf(emitter,
+	    "HPA shard stats:\n"
+	    "  Purge passes: %" FMTu64 " (%" FMTu64 " / sec)\n"
+	    "  Purges: %" FMTu64 " (%" FMTu64 " / sec)\n"
+	    "  Hugeifies: %" FMTu64 " (%" FMTu64 " / sec)\n"
+	    "  Dehugifies: %" FMTu64 " (%" FMTu64 " / sec)\n"
+	    "\n",
+	    npurge_passes, rate_per_second(npurge_passes, uptime),
+	    npurges, rate_per_second(npurges, uptime),
+	    nhugifies, rate_per_second(nhugifies, uptime),
+	    ndehugifies, rate_per_second(ndehugifies, uptime));
+
+	emitter_json_object_kv_begin(emitter, "hpa_shard");
+	emitter_json_kv(emitter, "npurge_passes", emitter_type_uint64,
+	    &npurge_passes);
+	emitter_json_kv(emitter, "npurges", emitter_type_uint64,
+	    &npurges);
+	emitter_json_kv(emitter, "nhugifies", emitter_type_uint64,
+	    &nhugifies);
+	emitter_json_kv(emitter, "ndehugifies", emitter_type_uint64,
+	    &ndehugifies);
+
+	/* Next, full slab stats. */
+	CTL_M2_GET("stats.arenas.0.hpa_shard.full_slabs.npageslabs_huge",
+	    i, &npageslabs_huge, size_t);
+	CTL_M2_GET("stats.arenas.0.hpa_shard.full_slabs.nactive_huge",
+	    i, &nactive_huge, size_t);
+	CTL_M2_GET("stats.arenas.0.hpa_shard.full_slabs.ndirty_huge",
+	    i, &ndirty_huge, size_t);
+
+	CTL_M2_GET("stats.arenas.0.hpa_shard.full_slabs.npageslabs_nonhuge",
+	    i, &npageslabs_nonhuge, size_t);
+	CTL_M2_GET("stats.arenas.0.hpa_shard.full_slabs.nactive_nonhuge",
+	    i, &nactive_nonhuge, size_t);
+	CTL_M2_GET("stats.arenas.0.hpa_shard.full_slabs.ndirty_nonhuge",
+	    i, &ndirty_nonhuge, size_t);
+	nretained_nonhuge = npageslabs_nonhuge * HUGEPAGE_PAGES
+	    - nactive_nonhuge - ndirty_nonhuge;
+
+	emitter_table_printf(emitter,
+	    "  In full slabs:\n"
+	    "      npageslabs: %zu huge, %zu nonhuge\n"
+	    "      nactive: %zu huge, %zu nonhuge \n"
+	    "      ndirty: %zu huge, %zu nonhuge \n"
+	    "      nretained: 0 huge, %zu nonhuge \n",
+	    npageslabs_huge, npageslabs_nonhuge,
+	    nactive_huge, nactive_nonhuge,
+	    ndirty_huge, ndirty_nonhuge,
+	    nretained_nonhuge);
+
+	emitter_json_object_kv_begin(emitter, "full_slabs");
+	emitter_json_kv(emitter, "npageslabs_huge", emitter_type_size,
+	    &npageslabs_huge);
+	emitter_json_kv(emitter, "nactive_huge", emitter_type_size,
+	    &nactive_huge);
+	emitter_json_kv(emitter, "nactive_huge", emitter_type_size,
+	    &nactive_huge);
+	emitter_json_kv(emitter, "npageslabs_nonhuge", emitter_type_size,
+	    &npageslabs_nonhuge);
+	emitter_json_kv(emitter, "nactive_nonhuge", emitter_type_size,
+	    &nactive_nonhuge);
+	emitter_json_kv(emitter, "ndirty_nonhuge", emitter_type_size,
+	    &ndirty_nonhuge);
+	emitter_json_object_end(emitter); /* End "full_slabs" */
+
+	/* Next, empty slab stats. */
+	CTL_M2_GET("stats.arenas.0.hpa_shard.empty_slabs.npageslabs_huge",
+	    i, &npageslabs_huge, size_t);
+	CTL_M2_GET("stats.arenas.0.hpa_shard.empty_slabs.nactive_huge",
+	    i, &nactive_huge, size_t);
+	CTL_M2_GET("stats.arenas.0.hpa_shard.empty_slabs.ndirty_huge",
+	    i, &ndirty_huge, size_t);
+
+	CTL_M2_GET("stats.arenas.0.hpa_shard.empty_slabs.npageslabs_nonhuge",
+	    i, &npageslabs_nonhuge, size_t);
+	CTL_M2_GET("stats.arenas.0.hpa_shard.empty_slabs.nactive_nonhuge",
+	    i, &nactive_nonhuge, size_t);
+	CTL_M2_GET("stats.arenas.0.hpa_shard.empty_slabs.ndirty_nonhuge",
+	    i, &ndirty_nonhuge, size_t);
+	nretained_nonhuge = npageslabs_nonhuge * HUGEPAGE_PAGES
+	    - nactive_nonhuge - ndirty_nonhuge;
+
+	emitter_table_printf(emitter,
+	    "  In empty slabs:\n"
+	    "      npageslabs: %zu huge, %zu nonhuge\n"
+	    "      nactive: %zu huge, %zu nonhuge \n"
+	    "      ndirty: %zu huge, %zu nonhuge \n"
+	    "      nretained: 0 huge, %zu nonhuge \n"
+	    "\n",
+	    npageslabs_huge, npageslabs_nonhuge,
+	    nactive_huge, nactive_nonhuge,
+	    ndirty_huge, ndirty_nonhuge,
+	    nretained_nonhuge);
+
+	emitter_json_object_kv_begin(emitter, "empty_slabs");
+	emitter_json_kv(emitter, "npageslabs_huge", emitter_type_size,
+	    &npageslabs_huge);
+	emitter_json_kv(emitter, "nactive_huge", emitter_type_size,
+	    &nactive_huge);
+	emitter_json_kv(emitter, "nactive_huge", emitter_type_size,
+	    &nactive_huge);
+	emitter_json_kv(emitter, "npageslabs_nonhuge", emitter_type_size,
+	    &npageslabs_nonhuge);
+	emitter_json_kv(emitter, "nactive_nonhuge", emitter_type_size,
+	    &nactive_nonhuge);
+	emitter_json_kv(emitter, "ndirty_nonhuge", emitter_type_size,
+	    &ndirty_nonhuge);
+	emitter_json_object_end(emitter); /* End "empty_slabs" */
+
+	COL_HDR(row, size, NULL, right, 20, size)
+	COL_HDR(row, ind, NULL, right, 4, unsigned)
+	COL_HDR(row, npageslabs_huge, NULL, right, 16, size)
+	COL_HDR(row, nactive_huge, NULL, right, 16, size)
+	COL_HDR(row, ndirty_huge, NULL, right, 16, size)
+	COL_HDR(row, npageslabs_nonhuge, NULL, right, 20, size)
+	COL_HDR(row, nactive_nonhuge, NULL, right, 20, size)
+	COL_HDR(row, ndirty_nonhuge, NULL, right, 20, size)
+	COL_HDR(row, nretained_nonhuge, NULL, right, 20, size)
+
+	size_t stats_arenas_mib[CTL_MAX_DEPTH];
+	CTL_LEAF_PREPARE(stats_arenas_mib, 0, "stats.arenas");
+	stats_arenas_mib[2] = i;
+	CTL_LEAF_PREPARE(stats_arenas_mib, 3, "hpa_shard.nonfull_slabs");
+
+	emitter_table_row(emitter, &header_row);
+	emitter_json_array_kv_begin(emitter, "nonfull_slabs");
+	bool in_gap = false;
+	for (pszind_t j = 0; j < PSSET_NPSIZES && j < SC_NPSIZES; j++) {
+		stats_arenas_mib[5] = j;
+
+		CTL_LEAF(stats_arenas_mib, 6, "npageslabs_huge",
+		    &npageslabs_huge, size_t);
+		CTL_LEAF(stats_arenas_mib, 6, "nactive_huge",
+		    &nactive_huge, size_t);
+		CTL_LEAF(stats_arenas_mib, 6, "ndirty_huge",
+		    &ndirty_huge, size_t);
+
+		CTL_LEAF(stats_arenas_mib, 6, "npageslabs_nonhuge",
+		    &npageslabs_nonhuge, size_t);
+		CTL_LEAF(stats_arenas_mib, 6, "nactive_nonhuge",
+		    &nactive_nonhuge, size_t);
+		CTL_LEAF(stats_arenas_mib, 6, "ndirty_nonhuge",
+		    &ndirty_nonhuge, size_t);
+		nretained_nonhuge = npageslabs_nonhuge * HUGEPAGE_PAGES
+		    - nactive_nonhuge - ndirty_nonhuge;
+
+		bool in_gap_prev = in_gap;
+		in_gap = (npageslabs_huge == 0 && npageslabs_nonhuge == 0);
+		if (in_gap_prev && !in_gap) {
+			emitter_table_printf(emitter,
+			    "                     ---\n");
+		}
+
+		col_size.size_val = sz_pind2sz(j);
+		col_ind.size_val = j;
+		col_npageslabs_huge.size_val = npageslabs_huge;
+		col_nactive_huge.size_val = nactive_huge;
+		col_ndirty_huge.size_val = ndirty_huge;
+		col_npageslabs_nonhuge.size_val = npageslabs_nonhuge;
+		col_nactive_nonhuge.size_val = nactive_nonhuge;
+		col_ndirty_nonhuge.size_val = ndirty_nonhuge;
+		col_nretained_nonhuge.size_val = nretained_nonhuge;
+		if (!in_gap) {
+			emitter_table_row(emitter, &row);
+		}
+
+		emitter_json_object_begin(emitter);
+		emitter_json_kv(emitter, "npageslabs_huge", emitter_type_size,
+		    &npageslabs_huge);
+		emitter_json_kv(emitter, "nactive_huge", emitter_type_size,
+		    &nactive_huge);
+		emitter_json_kv(emitter, "ndirty_huge", emitter_type_size,
+		    &ndirty_huge);
+		emitter_json_kv(emitter, "npageslabs_nonhuge", emitter_type_size,
+		    &npageslabs_nonhuge);
+		emitter_json_kv(emitter, "nactive_nonhuge", emitter_type_size,
+		    &nactive_nonhuge);
+		emitter_json_kv(emitter, "ndirty_nonhuge", emitter_type_size,
+		    &ndirty_nonhuge);
+		emitter_json_object_end(emitter);
+	}
+	emitter_json_array_end(emitter); /* End "nonfull_slabs" */
+	emitter_json_object_end(emitter); /* End "hpa_shard" */
+	if (in_gap) {
+		emitter_table_printf(emitter, "                     ---\n");
+	}
+}
+
+static void
+stats_arena_mutexes_print(emitter_t *emitter, unsigned arena_ind, uint64_t uptime) {
+	emitter_row_t row;
+	emitter_col_t col_name;
+	emitter_col_t col64[mutex_prof_num_uint64_t_counters];
+	emitter_col_t col32[mutex_prof_num_uint32_t_counters];
+
+	emitter_row_init(&row);
+	mutex_stats_init_cols(&row, "", &col_name, col64, col32);
+
+	emitter_json_object_kv_begin(emitter, "mutexes");
+	emitter_table_row(emitter, &row);
+
+	size_t stats_arenas_mib[CTL_MAX_DEPTH];
+	CTL_LEAF_PREPARE(stats_arenas_mib, 0, "stats.arenas");
+	stats_arenas_mib[2] = arena_ind;
+	CTL_LEAF_PREPARE(stats_arenas_mib, 3, "mutexes");
+
+	for (mutex_prof_arena_ind_t i = 0; i < mutex_prof_num_arena_mutexes;
+	    i++) {
+		const char *name = arena_mutex_names[i];
+		emitter_json_object_kv_begin(emitter, name);
+		mutex_stats_read_arena(stats_arenas_mib, 4, name, &col_name,
+		    col64, col32, uptime);
+		mutex_stats_emit(emitter, &row, col64, col32);
+		emitter_json_object_end(emitter); /* Close the mutex dict. */
+	}
+	emitter_json_object_end(emitter); /* End "mutexes". */
+}
+
+JEMALLOC_COLD
+static void
+stats_arena_print(emitter_t *emitter, unsigned i, bool bins, bool large,
+    bool mutex, bool extents, bool hpa) {
+	unsigned nthreads;
+	const char *dss;
+	ssize_t dirty_decay_ms, muzzy_decay_ms;
+	size_t page, pactive, pdirty, pmuzzy, mapped, retained;
+	size_t base, internal, resident, metadata_thp, extent_avail;
+	uint64_t dirty_npurge, dirty_nmadvise, dirty_purged;
+	uint64_t muzzy_npurge, muzzy_nmadvise, muzzy_purged;
+	size_t small_allocated;
+	uint64_t small_nmalloc, small_ndalloc, small_nrequests, small_nfills,
+	    small_nflushes;
+	size_t large_allocated;
+	uint64_t large_nmalloc, large_ndalloc, large_nrequests, large_nfills,
+	    large_nflushes;
+	size_t tcache_bytes, tcache_stashed_bytes, abandoned_vm;
+	uint64_t uptime;
+
+	CTL_GET("arenas.page", &page, size_t);
+
+	CTL_M2_GET("stats.arenas.0.nthreads", i, &nthreads, unsigned);
+	emitter_kv(emitter, "nthreads", "assigned threads",
+	    emitter_type_unsigned, &nthreads);
+
+	CTL_M2_GET("stats.arenas.0.uptime", i, &uptime, uint64_t);
+	emitter_kv(emitter, "uptime_ns", "uptime", emitter_type_uint64,
+	    &uptime);
+
+	CTL_M2_GET("stats.arenas.0.dss", i, &dss, const char *);
+	emitter_kv(emitter, "dss", "dss allocation precedence",
+	    emitter_type_string, &dss);
+
+	CTL_M2_GET("stats.arenas.0.dirty_decay_ms", i, &dirty_decay_ms,
+	    ssize_t);
+	CTL_M2_GET("stats.arenas.0.muzzy_decay_ms", i, &muzzy_decay_ms,
+	    ssize_t);
+	CTL_M2_GET("stats.arenas.0.pactive", i, &pactive, size_t);
+	CTL_M2_GET("stats.arenas.0.pdirty", i, &pdirty, size_t);
+	CTL_M2_GET("stats.arenas.0.pmuzzy", i, &pmuzzy, size_t);
+	CTL_M2_GET("stats.arenas.0.dirty_npurge", i, &dirty_npurge, uint64_t);
+	CTL_M2_GET("stats.arenas.0.dirty_nmadvise", i, &dirty_nmadvise,
+	    uint64_t);
+	CTL_M2_GET("stats.arenas.0.dirty_purged", i, &dirty_purged, uint64_t);
+	CTL_M2_GET("stats.arenas.0.muzzy_npurge", i, &muzzy_npurge, uint64_t);
+	CTL_M2_GET("stats.arenas.0.muzzy_nmadvise", i, &muzzy_nmadvise,
+	    uint64_t);
+	CTL_M2_GET("stats.arenas.0.muzzy_purged", i, &muzzy_purged, uint64_t);
+
+	emitter_row_t decay_row;
+	emitter_row_init(&decay_row);
+
+	/* JSON-style emission. */
+	emitter_json_kv(emitter, "dirty_decay_ms", emitter_type_ssize,
+	    &dirty_decay_ms);
+	emitter_json_kv(emitter, "muzzy_decay_ms", emitter_type_ssize,
+	    &muzzy_decay_ms);
+
+	emitter_json_kv(emitter, "pactive", emitter_type_size, &pactive);
+	emitter_json_kv(emitter, "pdirty", emitter_type_size, &pdirty);
+	emitter_json_kv(emitter, "pmuzzy", emitter_type_size, &pmuzzy);
+
+	emitter_json_kv(emitter, "dirty_npurge", emitter_type_uint64,
+	    &dirty_npurge);
+	emitter_json_kv(emitter, "dirty_nmadvise", emitter_type_uint64,
+	    &dirty_nmadvise);
+	emitter_json_kv(emitter, "dirty_purged", emitter_type_uint64,
+	    &dirty_purged);
+
+	emitter_json_kv(emitter, "muzzy_npurge", emitter_type_uint64,
+	    &muzzy_npurge);
+	emitter_json_kv(emitter, "muzzy_nmadvise", emitter_type_uint64,
+	    &muzzy_nmadvise);
+	emitter_json_kv(emitter, "muzzy_purged", emitter_type_uint64,
+	    &muzzy_purged);
+
+	/* Table-style emission. */
+	COL(decay_row, decay_type, right, 9, title);
+	col_decay_type.str_val = "decaying:";
+
+	COL(decay_row, decay_time, right, 6, title);
+	col_decay_time.str_val = "time";
+
+	COL(decay_row, decay_npages, right, 13, title);
+	col_decay_npages.str_val = "npages";
+
+	COL(decay_row, decay_sweeps, right, 13, title);
+	col_decay_sweeps.str_val = "sweeps";
+
+	COL(decay_row, decay_madvises, right, 13, title);
+	col_decay_madvises.str_val = "madvises";
+
+	COL(decay_row, decay_purged, right, 13, title);
+	col_decay_purged.str_val = "purged";
+
+	/* Title row. */
+	emitter_table_row(emitter, &decay_row);
+
+	/* Dirty row. */
+	col_decay_type.str_val = "dirty:";
+
+	if (dirty_decay_ms >= 0) {
+		col_decay_time.type = emitter_type_ssize;
+		col_decay_time.ssize_val = dirty_decay_ms;
+	} else {
+		col_decay_time.type = emitter_type_title;
+		col_decay_time.str_val = "N/A";
+	}
+
+	col_decay_npages.type = emitter_type_size;
+	col_decay_npages.size_val = pdirty;
+
+	col_decay_sweeps.type = emitter_type_uint64;
+	col_decay_sweeps.uint64_val = dirty_npurge;
+
+	col_decay_madvises.type = emitter_type_uint64;
+	col_decay_madvises.uint64_val = dirty_nmadvise;
+
+	col_decay_purged.type = emitter_type_uint64;
+	col_decay_purged.uint64_val = dirty_purged;
+
+	emitter_table_row(emitter, &decay_row);
+
+	/* Muzzy row. */
+	col_decay_type.str_val = "muzzy:";
+
+	if (muzzy_decay_ms >= 0) {
+		col_decay_time.type = emitter_type_ssize;
+		col_decay_time.ssize_val = muzzy_decay_ms;
+	} else {
+		col_decay_time.type = emitter_type_title;
+		col_decay_time.str_val = "N/A";
+	}
+
+	col_decay_npages.type = emitter_type_size;
+	col_decay_npages.size_val = pmuzzy;
+
+	col_decay_sweeps.type = emitter_type_uint64;
+	col_decay_sweeps.uint64_val = muzzy_npurge;
+
+	col_decay_madvises.type = emitter_type_uint64;
+	col_decay_madvises.uint64_val = muzzy_nmadvise;
+
+	col_decay_purged.type = emitter_type_uint64;
+	col_decay_purged.uint64_val = muzzy_purged;
+
+	emitter_table_row(emitter, &decay_row);
+
+	/* Small / large / total allocation counts. */
+	emitter_row_t alloc_count_row;
+	emitter_row_init(&alloc_count_row);
+
+	COL(alloc_count_row, count_title, left, 21, title);
+	col_count_title.str_val = "";
+
+	COL(alloc_count_row, count_allocated, right, 16, title);
+	col_count_allocated.str_val = "allocated";
+
+	COL(alloc_count_row, count_nmalloc, right, 16, title);
+	col_count_nmalloc.str_val = "nmalloc";
+	COL(alloc_count_row, count_nmalloc_ps, right, 10, title);
+	col_count_nmalloc_ps.str_val = "(#/sec)";
+
+	COL(alloc_count_row, count_ndalloc, right, 16, title);
+	col_count_ndalloc.str_val = "ndalloc";
+	COL(alloc_count_row, count_ndalloc_ps, right, 10, title);
+	col_count_ndalloc_ps.str_val = "(#/sec)";
+
+	COL(alloc_count_row, count_nrequests, right, 16, title);
+	col_count_nrequests.str_val = "nrequests";
+	COL(alloc_count_row, count_nrequests_ps, right, 10, title);
+	col_count_nrequests_ps.str_val = "(#/sec)";
+
+	COL(alloc_count_row, count_nfills, right, 16, title);
+	col_count_nfills.str_val = "nfill";
+	COL(alloc_count_row, count_nfills_ps, right, 10, title);
+	col_count_nfills_ps.str_val = "(#/sec)";
+
+	COL(alloc_count_row, count_nflushes, right, 16, title);
+	col_count_nflushes.str_val = "nflush";
+	COL(alloc_count_row, count_nflushes_ps, right, 10, title);
+	col_count_nflushes_ps.str_val = "(#/sec)";
+
+	emitter_table_row(emitter, &alloc_count_row);
+
+	col_count_nmalloc_ps.type = emitter_type_uint64;
+	col_count_ndalloc_ps.type = emitter_type_uint64;
+	col_count_nrequests_ps.type = emitter_type_uint64;
+	col_count_nfills_ps.type = emitter_type_uint64;
+	col_count_nflushes_ps.type = emitter_type_uint64;
+
+#define GET_AND_EMIT_ALLOC_STAT(small_or_large, name, valtype)		\
+	CTL_M2_GET("stats.arenas.0." #small_or_large "." #name, i,	\
+	    &small_or_large##_##name, valtype##_t);			\
+	emitter_json_kv(emitter, #name, emitter_type_##valtype,		\
+	    &small_or_large##_##name);					\
+	col_count_##name.type = emitter_type_##valtype;		\
+	col_count_##name.valtype##_val = small_or_large##_##name;
+
+	emitter_json_object_kv_begin(emitter, "small");
+	col_count_title.str_val = "small:";
+
+	GET_AND_EMIT_ALLOC_STAT(small, allocated, size)
+	GET_AND_EMIT_ALLOC_STAT(small, nmalloc, uint64)
+	col_count_nmalloc_ps.uint64_val =
+	    rate_per_second(col_count_nmalloc.uint64_val, uptime);
+	GET_AND_EMIT_ALLOC_STAT(small, ndalloc, uint64)
+	col_count_ndalloc_ps.uint64_val =
+	    rate_per_second(col_count_ndalloc.uint64_val, uptime);
+	GET_AND_EMIT_ALLOC_STAT(small, nrequests, uint64)
+	col_count_nrequests_ps.uint64_val =
+	    rate_per_second(col_count_nrequests.uint64_val, uptime);
+	GET_AND_EMIT_ALLOC_STAT(small, nfills, uint64)
+	col_count_nfills_ps.uint64_val =
+	    rate_per_second(col_count_nfills.uint64_val, uptime);
+	GET_AND_EMIT_ALLOC_STAT(small, nflushes, uint64)
+	col_count_nflushes_ps.uint64_val =
+	    rate_per_second(col_count_nflushes.uint64_val, uptime);
+
+	emitter_table_row(emitter, &alloc_count_row);
+	emitter_json_object_end(emitter); /* Close "small". */
+
+	emitter_json_object_kv_begin(emitter, "large");
+	col_count_title.str_val = "large:";
+
+	GET_AND_EMIT_ALLOC_STAT(large, allocated, size)
+	GET_AND_EMIT_ALLOC_STAT(large, nmalloc, uint64)
+	col_count_nmalloc_ps.uint64_val =
+	    rate_per_second(col_count_nmalloc.uint64_val, uptime);
+	GET_AND_EMIT_ALLOC_STAT(large, ndalloc, uint64)
+	col_count_ndalloc_ps.uint64_val =
+	    rate_per_second(col_count_ndalloc.uint64_val, uptime);
+	GET_AND_EMIT_ALLOC_STAT(large, nrequests, uint64)
+	col_count_nrequests_ps.uint64_val =
+	    rate_per_second(col_count_nrequests.uint64_val, uptime);
+	GET_AND_EMIT_ALLOC_STAT(large, nfills, uint64)
+	col_count_nfills_ps.uint64_val =
+	    rate_per_second(col_count_nfills.uint64_val, uptime);
+	GET_AND_EMIT_ALLOC_STAT(large, nflushes, uint64)
+	col_count_nflushes_ps.uint64_val =
+	    rate_per_second(col_count_nflushes.uint64_val, uptime);
+
+	emitter_table_row(emitter, &alloc_count_row);
+	emitter_json_object_end(emitter); /* Close "large". */
+
+#undef GET_AND_EMIT_ALLOC_STAT
+
+	/* Aggregated small + large stats are emitter only in table mode. */
+	col_count_title.str_val = "total:";
+	col_count_allocated.size_val = small_allocated + large_allocated;
+	col_count_nmalloc.uint64_val = small_nmalloc + large_nmalloc;
+	col_count_ndalloc.uint64_val = small_ndalloc + large_ndalloc;
+	col_count_nrequests.uint64_val = small_nrequests + large_nrequests;
+	col_count_nfills.uint64_val = small_nfills + large_nfills;
+	col_count_nflushes.uint64_val = small_nflushes + large_nflushes;
+	col_count_nmalloc_ps.uint64_val =
+	    rate_per_second(col_count_nmalloc.uint64_val, uptime);
+	col_count_ndalloc_ps.uint64_val =
+	    rate_per_second(col_count_ndalloc.uint64_val, uptime);
+	col_count_nrequests_ps.uint64_val =
+	    rate_per_second(col_count_nrequests.uint64_val, uptime);
+	col_count_nfills_ps.uint64_val =
+	    rate_per_second(col_count_nfills.uint64_val, uptime);
+	col_count_nflushes_ps.uint64_val =
+	    rate_per_second(col_count_nflushes.uint64_val, uptime);
+	emitter_table_row(emitter, &alloc_count_row);
+
+	emitter_row_t mem_count_row;
+	emitter_row_init(&mem_count_row);
+
+	emitter_col_t mem_count_title;
+	emitter_col_init(&mem_count_title, &mem_count_row);
+	mem_count_title.justify = emitter_justify_left;
+	mem_count_title.width = 21;
+	mem_count_title.type = emitter_type_title;
+	mem_count_title.str_val = "";
+
+	emitter_col_t mem_count_val;
+	emitter_col_init(&mem_count_val, &mem_count_row);
+	mem_count_val.justify = emitter_justify_right;
+	mem_count_val.width = 16;
+	mem_count_val.type = emitter_type_title;
+	mem_count_val.str_val = "";
+
+	emitter_table_row(emitter, &mem_count_row);
+	mem_count_val.type = emitter_type_size;
+
+	/* Active count in bytes is emitted only in table mode. */
+	mem_count_title.str_val = "active:";
+	mem_count_val.size_val = pactive * page;
+	emitter_table_row(emitter, &mem_count_row);
+
+#define GET_AND_EMIT_MEM_STAT(stat)					\
+	CTL_M2_GET("stats.arenas.0."#stat, i, &stat, size_t);		\
+	emitter_json_kv(emitter, #stat, emitter_type_size, &stat);	\
+	mem_count_title.str_val = #stat":";				\
+	mem_count_val.size_val = stat;					\
+	emitter_table_row(emitter, &mem_count_row);
+
+	GET_AND_EMIT_MEM_STAT(mapped)
+	GET_AND_EMIT_MEM_STAT(retained)
+	GET_AND_EMIT_MEM_STAT(base)
+	GET_AND_EMIT_MEM_STAT(internal)
+	GET_AND_EMIT_MEM_STAT(metadata_thp)
+	GET_AND_EMIT_MEM_STAT(tcache_bytes)
+	GET_AND_EMIT_MEM_STAT(tcache_stashed_bytes)
+	GET_AND_EMIT_MEM_STAT(resident)
+	GET_AND_EMIT_MEM_STAT(abandoned_vm)
+	GET_AND_EMIT_MEM_STAT(extent_avail)
+#undef GET_AND_EMIT_MEM_STAT
+
+	if (mutex) {
+		stats_arena_mutexes_print(emitter, i, uptime);
+	}
+	if (bins) {
+		stats_arena_bins_print(emitter, mutex, i, uptime);
+	}
+	if (large) {
+		stats_arena_lextents_print(emitter, i, uptime);
+	}
+	if (extents) {
+		stats_arena_extents_print(emitter, i);
+	}
+	if (hpa) {
+		stats_arena_hpa_shard_print(emitter, i, uptime);
+	}
+}
+
+JEMALLOC_COLD
+static void
+stats_general_print(emitter_t *emitter) {
+	const char *cpv;
+	bool bv, bv2;
+	unsigned uv;
+	uint32_t u32v;
+	uint64_t u64v;
+	int64_t i64v;
+	ssize_t ssv, ssv2;
+	size_t sv, bsz, usz, u32sz, u64sz, i64sz, ssz, sssz, cpsz;
+
+	bsz = sizeof(bool);
+	usz = sizeof(unsigned);
+	ssz = sizeof(size_t);
+	sssz = sizeof(ssize_t);
+	cpsz = sizeof(const char *);
+	u32sz = sizeof(uint32_t);
+	i64sz = sizeof(int64_t);
+	u64sz = sizeof(uint64_t);
+
+	CTL_GET("version", &cpv, const char *);
+	emitter_kv(emitter, "version", "Version", emitter_type_string, &cpv);
+
+	/* config. */
+	emitter_dict_begin(emitter, "config", "Build-time option settings");
+#define CONFIG_WRITE_BOOL(name)						\
+	do {								\
+		CTL_GET("config."#name, &bv, bool);			\
+		emitter_kv(emitter, #name, "config."#name,		\
+		    emitter_type_bool, &bv);				\
+	} while (0)
+
+	CONFIG_WRITE_BOOL(cache_oblivious);
+	CONFIG_WRITE_BOOL(debug);
+	CONFIG_WRITE_BOOL(fill);
+	CONFIG_WRITE_BOOL(lazy_lock);
+	emitter_kv(emitter, "malloc_conf", "config.malloc_conf",
+	    emitter_type_string, &config_malloc_conf);
+
+	CONFIG_WRITE_BOOL(opt_safety_checks);
+	CONFIG_WRITE_BOOL(prof);
+	CONFIG_WRITE_BOOL(prof_libgcc);
+	CONFIG_WRITE_BOOL(prof_libunwind);
+	CONFIG_WRITE_BOOL(stats);
+	CONFIG_WRITE_BOOL(utrace);
+	CONFIG_WRITE_BOOL(xmalloc);
+#undef CONFIG_WRITE_BOOL
+	emitter_dict_end(emitter); /* Close "config" dict. */
+
+	/* opt. */
+#define OPT_WRITE(name, var, size, emitter_type)			\
+	if (je_mallctl("opt."name, (void *)&var, &size, NULL, 0) ==	\
+	    0) {							\
+		emitter_kv(emitter, name, "opt."name, emitter_type,	\
+		    &var);						\
+	}
+
+#define OPT_WRITE_MUTABLE(name, var1, var2, size, emitter_type,		\
+    altname)								\
+	if (je_mallctl("opt."name, (void *)&var1, &size, NULL, 0) ==	\
+	    0 && je_mallctl(altname, (void *)&var2, &size, NULL, 0)	\
+	    == 0) {							\
+		emitter_kv_note(emitter, name, "opt."name,		\
+		    emitter_type, &var1, altname, emitter_type,		\
+		    &var2);						\
+	}
+
+#define OPT_WRITE_BOOL(name) OPT_WRITE(name, bv, bsz, emitter_type_bool)
+#define OPT_WRITE_BOOL_MUTABLE(name, altname)				\
+	OPT_WRITE_MUTABLE(name, bv, bv2, bsz, emitter_type_bool, altname)
+
+#define OPT_WRITE_UNSIGNED(name)					\
+	OPT_WRITE(name, uv, usz, emitter_type_unsigned)
+
+#define OPT_WRITE_INT64(name)						\
+	OPT_WRITE(name, i64v, i64sz, emitter_type_int64)
+#define OPT_WRITE_UINT64(name)						\
+	OPT_WRITE(name, u64v, u64sz, emitter_type_uint64)
+
+#define OPT_WRITE_SIZE_T(name)						\
+	OPT_WRITE(name, sv, ssz, emitter_type_size)
+#define OPT_WRITE_SSIZE_T(name)						\
+	OPT_WRITE(name, ssv, sssz, emitter_type_ssize)
+#define OPT_WRITE_SSIZE_T_MUTABLE(name, altname)			\
+	OPT_WRITE_MUTABLE(name, ssv, ssv2, sssz, emitter_type_ssize,	\
+	    altname)
+
+#define OPT_WRITE_CHAR_P(name)						\
+	OPT_WRITE(name, cpv, cpsz, emitter_type_string)
+
+	emitter_dict_begin(emitter, "opt", "Run-time option settings");
+
+	OPT_WRITE_BOOL("abort")
+	OPT_WRITE_BOOL("abort_conf")
+	OPT_WRITE_BOOL("cache_oblivious")
+	OPT_WRITE_BOOL("confirm_conf")
+	OPT_WRITE_BOOL("retain")
+	OPT_WRITE_CHAR_P("dss")
+	OPT_WRITE_UNSIGNED("narenas")
+	OPT_WRITE_CHAR_P("percpu_arena")
+	OPT_WRITE_SIZE_T("oversize_threshold")
+	OPT_WRITE_BOOL("hpa")
+	OPT_WRITE_SIZE_T("hpa_slab_max_alloc")
+	OPT_WRITE_SIZE_T("hpa_hugification_threshold")
+	OPT_WRITE_UINT64("hpa_hugify_delay_ms")
+	OPT_WRITE_UINT64("hpa_min_purge_interval_ms")
+	if (je_mallctl("opt.hpa_dirty_mult", (void *)&u32v, &u32sz, NULL, 0)
+	    == 0) {
+		/*
+		 * We cheat a little and "know" the secret meaning of this
+		 * representation.
+		 */
+		if (u32v == (uint32_t)-1) {
+			const char *neg1 = "-1";
+			emitter_kv(emitter, "hpa_dirty_mult",
+			    "opt.hpa_dirty_mult", emitter_type_string, &neg1);
+		} else {
+			char buf[FXP_BUF_SIZE];
+			fxp_print(u32v, buf);
+			const char *bufp = buf;
+			emitter_kv(emitter, "hpa_dirty_mult",
+			    "opt.hpa_dirty_mult", emitter_type_string, &bufp);
+		}
+	}
+	OPT_WRITE_SIZE_T("hpa_sec_nshards")
+	OPT_WRITE_SIZE_T("hpa_sec_max_alloc")
+	OPT_WRITE_SIZE_T("hpa_sec_max_bytes")
+	OPT_WRITE_SIZE_T("hpa_sec_bytes_after_flush")
+	OPT_WRITE_SIZE_T("hpa_sec_batch_fill_extra")
+	OPT_WRITE_CHAR_P("metadata_thp")
+	OPT_WRITE_INT64("mutex_max_spin")
+	OPT_WRITE_BOOL_MUTABLE("background_thread", "background_thread")
+	OPT_WRITE_SSIZE_T_MUTABLE("dirty_decay_ms", "arenas.dirty_decay_ms")
+	OPT_WRITE_SSIZE_T_MUTABLE("muzzy_decay_ms", "arenas.muzzy_decay_ms")
+	OPT_WRITE_SIZE_T("lg_extent_max_active_fit")
+	OPT_WRITE_CHAR_P("junk")
+	OPT_WRITE_BOOL("zero")
+	OPT_WRITE_BOOL("utrace")
+	OPT_WRITE_BOOL("xmalloc")
+	OPT_WRITE_BOOL("experimental_infallible_new")
+	OPT_WRITE_BOOL("tcache")
+	OPT_WRITE_SIZE_T("tcache_max")
+	OPT_WRITE_UNSIGNED("tcache_nslots_small_min")
+	OPT_WRITE_UNSIGNED("tcache_nslots_small_max")
+	OPT_WRITE_UNSIGNED("tcache_nslots_large")
+	OPT_WRITE_SSIZE_T("lg_tcache_nslots_mul")
+	OPT_WRITE_SIZE_T("tcache_gc_incr_bytes")
+	OPT_WRITE_SIZE_T("tcache_gc_delay_bytes")
+	OPT_WRITE_UNSIGNED("lg_tcache_flush_small_div")
+	OPT_WRITE_UNSIGNED("lg_tcache_flush_large_div")
+	OPT_WRITE_CHAR_P("thp")
+	OPT_WRITE_BOOL("prof")
+	OPT_WRITE_CHAR_P("prof_prefix")
+	OPT_WRITE_BOOL_MUTABLE("prof_active", "prof.active")
+	OPT_WRITE_BOOL_MUTABLE("prof_thread_active_init",
+	    "prof.thread_active_init")
+	OPT_WRITE_SSIZE_T_MUTABLE("lg_prof_sample", "prof.lg_sample")
+	OPT_WRITE_BOOL("prof_accum")
+	OPT_WRITE_SSIZE_T("lg_prof_interval")
+	OPT_WRITE_BOOL("prof_gdump")
+	OPT_WRITE_BOOL("prof_final")
+	OPT_WRITE_BOOL("prof_leak")
+	OPT_WRITE_BOOL("prof_leak_error")
+	OPT_WRITE_BOOL("stats_print")
+	OPT_WRITE_CHAR_P("stats_print_opts")
+	OPT_WRITE_BOOL("stats_print")
+	OPT_WRITE_CHAR_P("stats_print_opts")
+	OPT_WRITE_INT64("stats_interval")
+	OPT_WRITE_CHAR_P("stats_interval_opts")
+	OPT_WRITE_CHAR_P("zero_realloc")
+
+	emitter_dict_end(emitter);
+
+#undef OPT_WRITE
+#undef OPT_WRITE_MUTABLE
+#undef OPT_WRITE_BOOL
+#undef OPT_WRITE_BOOL_MUTABLE
+#undef OPT_WRITE_UNSIGNED
+#undef OPT_WRITE_SSIZE_T
+#undef OPT_WRITE_SSIZE_T_MUTABLE
+#undef OPT_WRITE_CHAR_P
+
+	/* prof. */
+	if (config_prof) {
+		emitter_dict_begin(emitter, "prof", "Profiling settings");
+
+		CTL_GET("prof.thread_active_init", &bv, bool);
+		emitter_kv(emitter, "thread_active_init",
+		    "prof.thread_active_init", emitter_type_bool, &bv);
+
+		CTL_GET("prof.active", &bv, bool);
+		emitter_kv(emitter, "active", "prof.active", emitter_type_bool,
+		    &bv);
+
+		CTL_GET("prof.gdump", &bv, bool);
+		emitter_kv(emitter, "gdump", "prof.gdump", emitter_type_bool,
+		    &bv);
+
+		CTL_GET("prof.interval", &u64v, uint64_t);
+		emitter_kv(emitter, "interval", "prof.interval",
+		    emitter_type_uint64, &u64v);
+
+		CTL_GET("prof.lg_sample", &ssv, ssize_t);
+		emitter_kv(emitter, "lg_sample", "prof.lg_sample",
+		    emitter_type_ssize, &ssv);
+
+		emitter_dict_end(emitter); /* Close "prof". */
+	}
+
+	/* arenas. */
+	/*
+	 * The json output sticks arena info into an "arenas" dict; the table
+	 * output puts them at the top-level.
+	 */
+	emitter_json_object_kv_begin(emitter, "arenas");
+
+	CTL_GET("arenas.narenas", &uv, unsigned);
+	emitter_kv(emitter, "narenas", "Arenas", emitter_type_unsigned, &uv);
+
+	/*
+	 * Decay settings are emitted only in json mode; in table mode, they're
+	 * emitted as notes with the opt output, above.
+	 */
+	CTL_GET("arenas.dirty_decay_ms", &ssv, ssize_t);
+	emitter_json_kv(emitter, "dirty_decay_ms", emitter_type_ssize, &ssv);
+
+	CTL_GET("arenas.muzzy_decay_ms", &ssv, ssize_t);
+	emitter_json_kv(emitter, "muzzy_decay_ms", emitter_type_ssize, &ssv);
+
+	CTL_GET("arenas.quantum", &sv, size_t);
+	emitter_kv(emitter, "quantum", "Quantum size", emitter_type_size, &sv);
+
+	CTL_GET("arenas.page", &sv, size_t);
+	emitter_kv(emitter, "page", "Page size", emitter_type_size, &sv);
+
+	if (je_mallctl("arenas.tcache_max", (void *)&sv, &ssz, NULL, 0) == 0) {
+		emitter_kv(emitter, "tcache_max",
+		    "Maximum thread-cached size class", emitter_type_size, &sv);
+	}
+
+	unsigned arenas_nbins;
+	CTL_GET("arenas.nbins", &arenas_nbins, unsigned);
+	emitter_kv(emitter, "nbins", "Number of bin size classes",
+	    emitter_type_unsigned, &arenas_nbins);
+
+	unsigned arenas_nhbins;
+	CTL_GET("arenas.nhbins", &arenas_nhbins, unsigned);
+	emitter_kv(emitter, "nhbins", "Number of thread-cache bin size classes",
+	    emitter_type_unsigned, &arenas_nhbins);
+
+	/*
+	 * We do enough mallctls in a loop that we actually want to omit them
+	 * (not just omit the printing).
+	 */
+	if (emitter_outputs_json(emitter)) {
+		emitter_json_array_kv_begin(emitter, "bin");
+		size_t arenas_bin_mib[CTL_MAX_DEPTH];
+		CTL_LEAF_PREPARE(arenas_bin_mib, 0, "arenas.bin");
+		for (unsigned i = 0; i < arenas_nbins; i++) {
+			arenas_bin_mib[2] = i;
+			emitter_json_object_begin(emitter);
+
+			CTL_LEAF(arenas_bin_mib, 3, "size", &sv, size_t);
+			emitter_json_kv(emitter, "size", emitter_type_size,
+			    &sv);
+
+			CTL_LEAF(arenas_bin_mib, 3, "nregs", &u32v, uint32_t);
+			emitter_json_kv(emitter, "nregs", emitter_type_uint32,
+			    &u32v);
+
+			CTL_LEAF(arenas_bin_mib, 3, "slab_size", &sv, size_t);
+			emitter_json_kv(emitter, "slab_size", emitter_type_size,
+			    &sv);
+
+			CTL_LEAF(arenas_bin_mib, 3, "nshards", &u32v, uint32_t);
+			emitter_json_kv(emitter, "nshards", emitter_type_uint32,
+			    &u32v);
+
+			emitter_json_object_end(emitter);
+		}
+		emitter_json_array_end(emitter); /* Close "bin". */
+	}
+
+	unsigned nlextents;
+	CTL_GET("arenas.nlextents", &nlextents, unsigned);
+	emitter_kv(emitter, "nlextents", "Number of large size classes",
+	    emitter_type_unsigned, &nlextents);
+
+	if (emitter_outputs_json(emitter)) {
+		emitter_json_array_kv_begin(emitter, "lextent");
+		size_t arenas_lextent_mib[CTL_MAX_DEPTH];
+		CTL_LEAF_PREPARE(arenas_lextent_mib, 0, "arenas.lextent");
+		for (unsigned i = 0; i < nlextents; i++) {
+			arenas_lextent_mib[2] = i;
+			emitter_json_object_begin(emitter);
+
+			CTL_LEAF(arenas_lextent_mib, 3, "size", &sv, size_t);
+			emitter_json_kv(emitter, "size", emitter_type_size,
+			    &sv);
+
+			emitter_json_object_end(emitter);
+		}
+		emitter_json_array_end(emitter); /* Close "lextent". */
+	}
+
+	emitter_json_object_end(emitter); /* Close "arenas" */
+}
+
+JEMALLOC_COLD
+static void
+stats_print_helper(emitter_t *emitter, bool merged, bool destroyed,
+    bool unmerged, bool bins, bool large, bool mutex, bool extents, bool hpa) {
+	/*
+	 * These should be deleted.  We keep them around for a while, to aid in
+	 * the transition to the emitter code.
+	 */
+	size_t allocated, active, metadata, metadata_thp, resident, mapped,
+	    retained;
+	size_t num_background_threads;
+	size_t zero_reallocs;
+	uint64_t background_thread_num_runs, background_thread_run_interval;
+
+	CTL_GET("stats.allocated", &allocated, size_t);
+	CTL_GET("stats.active", &active, size_t);
+	CTL_GET("stats.metadata", &metadata, size_t);
+	CTL_GET("stats.metadata_thp", &metadata_thp, size_t);
+	CTL_GET("stats.resident", &resident, size_t);
+	CTL_GET("stats.mapped", &mapped, size_t);
+	CTL_GET("stats.retained", &retained, size_t);
+
+	CTL_GET("stats.zero_reallocs", &zero_reallocs, size_t);
+
+	if (have_background_thread) {
+		CTL_GET("stats.background_thread.num_threads",
+		    &num_background_threads, size_t);
+		CTL_GET("stats.background_thread.num_runs",
+		    &background_thread_num_runs, uint64_t);
+		CTL_GET("stats.background_thread.run_interval",
+		    &background_thread_run_interval, uint64_t);
+	} else {
+		num_background_threads = 0;
+		background_thread_num_runs = 0;
+		background_thread_run_interval = 0;
+	}
+
+	/* Generic global stats. */
+	emitter_json_object_kv_begin(emitter, "stats");
+	emitter_json_kv(emitter, "allocated", emitter_type_size, &allocated);
+	emitter_json_kv(emitter, "active", emitter_type_size, &active);
+	emitter_json_kv(emitter, "metadata", emitter_type_size, &metadata);
+	emitter_json_kv(emitter, "metadata_thp", emitter_type_size,
+	    &metadata_thp);
+	emitter_json_kv(emitter, "resident", emitter_type_size, &resident);
+	emitter_json_kv(emitter, "mapped", emitter_type_size, &mapped);
+	emitter_json_kv(emitter, "retained", emitter_type_size, &retained);
+	emitter_json_kv(emitter, "zero_reallocs", emitter_type_size,
+	    &zero_reallocs);
+
+	emitter_table_printf(emitter, "Allocated: %zu, active: %zu, "
+	    "metadata: %zu (n_thp %zu), resident: %zu, mapped: %zu, "
+	    "retained: %zu\n", allocated, active, metadata, metadata_thp,
+	    resident, mapped, retained);
+
+	/* Strange behaviors */
+	emitter_table_printf(emitter,
+	    "Count of realloc(non-null-ptr, 0) calls: %zu\n", zero_reallocs);
+
+	/* Background thread stats. */
+	emitter_json_object_kv_begin(emitter, "background_thread");
+	emitter_json_kv(emitter, "num_threads", emitter_type_size,
+	    &num_background_threads);
+	emitter_json_kv(emitter, "num_runs", emitter_type_uint64,
+	    &background_thread_num_runs);
+	emitter_json_kv(emitter, "run_interval", emitter_type_uint64,
+	    &background_thread_run_interval);
+	emitter_json_object_end(emitter); /* Close "background_thread". */
+
+	emitter_table_printf(emitter, "Background threads: %zu, "
+	    "num_runs: %"FMTu64", run_interval: %"FMTu64" ns\n",
+	    num_background_threads, background_thread_num_runs,
+	    background_thread_run_interval);
+
+	if (mutex) {
+		emitter_row_t row;
+		emitter_col_t name;
+		emitter_col_t col64[mutex_prof_num_uint64_t_counters];
+		emitter_col_t col32[mutex_prof_num_uint32_t_counters];
+		uint64_t uptime;
+
+		emitter_row_init(&row);
+		mutex_stats_init_cols(&row, "", &name, col64, col32);
+
+		emitter_table_row(emitter, &row);
+		emitter_json_object_kv_begin(emitter, "mutexes");
+
+		CTL_M2_GET("stats.arenas.0.uptime", 0, &uptime, uint64_t);
+
+		size_t stats_mutexes_mib[CTL_MAX_DEPTH];
+		CTL_LEAF_PREPARE(stats_mutexes_mib, 0, "stats.mutexes");
+		for (int i = 0; i < mutex_prof_num_global_mutexes; i++) {
+			mutex_stats_read_global(stats_mutexes_mib, 2,
+			    global_mutex_names[i], &name, col64, col32, uptime);
+			emitter_json_object_kv_begin(emitter, global_mutex_names[i]);
+			mutex_stats_emit(emitter, &row, col64, col32);
+			emitter_json_object_end(emitter);
+		}
+
+		emitter_json_object_end(emitter); /* Close "mutexes". */
+	}
+
+	emitter_json_object_end(emitter); /* Close "stats". */
+
+	if (merged || destroyed || unmerged) {
+		unsigned narenas;
+
+		emitter_json_object_kv_begin(emitter, "stats.arenas");
+
+		CTL_GET("arenas.narenas", &narenas, unsigned);
+		size_t mib[3];
+		size_t miblen = sizeof(mib) / sizeof(size_t);
+		size_t sz;
+		VARIABLE_ARRAY(bool, initialized, narenas);
+		bool destroyed_initialized;
+		unsigned i, j, ninitialized;
+
+		xmallctlnametomib("arena.0.initialized", mib, &miblen);
+		for (i = ninitialized = 0; i < narenas; i++) {
+			mib[1] = i;
+			sz = sizeof(bool);
+			xmallctlbymib(mib, miblen, &initialized[i], &sz,
+			    NULL, 0);
+			if (initialized[i]) {
+				ninitialized++;
+			}
+		}
+		mib[1] = MALLCTL_ARENAS_DESTROYED;
+		sz = sizeof(bool);
+		xmallctlbymib(mib, miblen, &destroyed_initialized, &sz,
+		    NULL, 0);
+
+		/* Merged stats. */
+		if (merged && (ninitialized > 1 || !unmerged)) {
+			/* Print merged arena stats. */
+			emitter_table_printf(emitter, "Merged arenas stats:\n");
+			emitter_json_object_kv_begin(emitter, "merged");
+			stats_arena_print(emitter, MALLCTL_ARENAS_ALL, bins,
+			    large, mutex, extents, hpa);
+			emitter_json_object_end(emitter); /* Close "merged". */
+		}
+
+		/* Destroyed stats. */
+		if (destroyed_initialized && destroyed) {
+			/* Print destroyed arena stats. */
+			emitter_table_printf(emitter,
+			    "Destroyed arenas stats:\n");
+			emitter_json_object_kv_begin(emitter, "destroyed");
+			stats_arena_print(emitter, MALLCTL_ARENAS_DESTROYED,
+			    bins, large, mutex, extents, hpa);
+			emitter_json_object_end(emitter); /* Close "destroyed". */
+		}
+
+		/* Unmerged stats. */
+		if (unmerged) {
+			for (i = j = 0; i < narenas; i++) {
+				if (initialized[i]) {
+					char arena_ind_str[20];
+					malloc_snprintf(arena_ind_str,
+					    sizeof(arena_ind_str), "%u", i);
+					emitter_json_object_kv_begin(emitter,
+					    arena_ind_str);
+					emitter_table_printf(emitter,
+					    "arenas[%s]:\n", arena_ind_str);
+					stats_arena_print(emitter, i, bins,
+					    large, mutex, extents, hpa);
+					/* Close "<arena-ind>". */
+					emitter_json_object_end(emitter);
+				}
+			}
+		}
+		emitter_json_object_end(emitter); /* Close "stats.arenas". */
+	}
+}
+
+void
+stats_print(write_cb_t *write_cb, void *cbopaque, const char *opts) {
+	int err;
+	uint64_t epoch;
+	size_t u64sz;
+#define OPTION(o, v, d, s) bool v = d;
+	STATS_PRINT_OPTIONS
+#undef OPTION
+
+	/*
+	 * Refresh stats, in case mallctl() was called by the application.
+	 *
+	 * Check for OOM here, since refreshing the ctl cache can trigger
+	 * allocation.  In practice, none of the subsequent mallctl()-related
+	 * calls in this function will cause OOM if this one succeeds.
+	 * */
+	epoch = 1;
+	u64sz = sizeof(uint64_t);
+	err = je_mallctl("epoch", (void *)&epoch, &u64sz, (void *)&epoch,
+	    sizeof(uint64_t));
+	if (err != 0) {
+		if (err == EAGAIN) {
+			malloc_write("<jemalloc>: Memory allocation failure in "
+			    "mallctl(\"epoch\", ...)\n");
+			return;
+		}
+		malloc_write("<jemalloc>: Failure in mallctl(\"epoch\", "
+		    "...)\n");
+		abort();
+	}
+
+	if (opts != NULL) {
+		for (unsigned i = 0; opts[i] != '\0'; i++) {
+			switch (opts[i]) {
+#define OPTION(o, v, d, s) case o: v = s; break;
+				STATS_PRINT_OPTIONS
+#undef OPTION
+			default:;
+			}
+		}
+	}
+
+	emitter_t emitter;
+	emitter_init(&emitter,
+	    json ? emitter_output_json_compact : emitter_output_table,
+	    write_cb, cbopaque);
+	emitter_begin(&emitter);
+	emitter_table_printf(&emitter, "___ Begin jemalloc statistics ___\n");
+	emitter_json_object_kv_begin(&emitter, "jemalloc");
+
+	if (general) {
+		stats_general_print(&emitter);
+	}
+	if (config_stats) {
+		stats_print_helper(&emitter, merged, destroyed, unmerged,
+		    bins, large, mutex, extents, hpa);
+	}
+
+	emitter_json_object_end(&emitter); /* Closes the "jemalloc" dict. */
+	emitter_table_printf(&emitter, "--- End jemalloc statistics ---\n");
+	emitter_end(&emitter);
+}
+
+uint64_t
+stats_interval_new_event_wait(tsd_t *tsd) {
+	return stats_interval_accum_batch;
+}
+
+uint64_t
+stats_interval_postponed_event_wait(tsd_t *tsd) {
+	return TE_MIN_START_WAIT;
+}
+
+void
+stats_interval_event_handler(tsd_t *tsd, uint64_t elapsed) {
+	assert(elapsed > 0 && elapsed != TE_INVALID_ELAPSED);
+	if (counter_accum(tsd_tsdn(tsd), &stats_interval_accumulated,
+	    elapsed)) {
+		je_malloc_stats_print(NULL, NULL, opt_stats_interval_opts);
+	}
+}
+
+bool
+stats_boot(void) {
+	uint64_t stats_interval;
+	if (opt_stats_interval < 0) {
+		assert(opt_stats_interval == -1);
+		stats_interval = 0;
+		stats_interval_accum_batch = 0;
+	} else{
+		/* See comments in stats.h */
+		stats_interval = (opt_stats_interval > 0) ?
+		    opt_stats_interval : 1;
+		uint64_t batch = stats_interval >>
+		    STATS_INTERVAL_ACCUM_LG_BATCH_SIZE;
+		if (batch > STATS_INTERVAL_ACCUM_BATCH_MAX) {
+			batch = STATS_INTERVAL_ACCUM_BATCH_MAX;
+		} else if (batch == 0) {
+			batch = 1;
+		}
+		stats_interval_accum_batch = batch;
+	}
+
+	return counter_accum_init(&stats_interval_accumulated, stats_interval);
+}
+
+void
+stats_prefork(tsdn_t *tsdn) {
+	counter_prefork(tsdn, &stats_interval_accumulated);
+}
+
+void
+stats_postfork_parent(tsdn_t *tsdn) {
+	counter_postfork_parent(tsdn, &stats_interval_accumulated);
+}
+
+void
+stats_postfork_child(tsdn_t *tsdn) {
+	counter_postfork_child(tsdn, &stats_interval_accumulated);
+}
diff --git a/deps/jemalloc/src/sz.c b/deps/jemalloc/src/sz.c
new file mode 100644
index 0000000..d3115dd
--- /dev/null
+++ b/deps/jemalloc/src/sz.c
@@ -0,0 +1,114 @@
+#include "jemalloc/internal/jemalloc_preamble.h"
+#include "jemalloc/internal/jemalloc_internal_includes.h"
+#include "jemalloc/internal/sz.h"
+
+JEMALLOC_ALIGNED(CACHELINE)
+size_t sz_pind2sz_tab[SC_NPSIZES+1];
+size_t sz_large_pad;
+
+size_t
+sz_psz_quantize_floor(size_t size) {
+	size_t ret;
+	pszind_t pind;
+
+	assert(size > 0);
+	assert((size & PAGE_MASK) == 0);
+
+	pind = sz_psz2ind(size - sz_large_pad + 1);
+	if (pind == 0) {
+		/*
+		 * Avoid underflow.  This short-circuit would also do the right
+		 * thing for all sizes in the range for which there are
+		 * PAGE-spaced size classes, but it's simplest to just handle
+		 * the one case that would cause erroneous results.
+		 */
+		return size;
+	}
+	ret = sz_pind2sz(pind - 1) + sz_large_pad;
+	assert(ret <= size);
+	return ret;
+}
+
+size_t
+sz_psz_quantize_ceil(size_t size) {
+	size_t ret;
+
+	assert(size > 0);
+	assert(size - sz_large_pad <= SC_LARGE_MAXCLASS);
+	assert((size & PAGE_MASK) == 0);
+
+	ret = sz_psz_quantize_floor(size);
+	if (ret < size) {
+		/*
+		 * Skip a quantization that may have an adequately large extent,
+		 * because under-sized extents may be mixed in.  This only
+		 * happens when an unusual size is requested, i.e. for aligned
+		 * allocation, and is just one of several places where linear
+		 * search would potentially find sufficiently aligned available
+		 * memory somewhere lower.
+		 */
+		ret = sz_pind2sz(sz_psz2ind(ret - sz_large_pad + 1)) +
+		    sz_large_pad;
+	}
+	return ret;
+}
+
+static void
+sz_boot_pind2sz_tab(const sc_data_t *sc_data) {
+	int pind = 0;
+	for (unsigned i = 0; i < SC_NSIZES; i++) {
+		const sc_t *sc = &sc_data->sc[i];
+		if (sc->psz) {
+			sz_pind2sz_tab[pind] = (ZU(1) << sc->lg_base)
+			    + (ZU(sc->ndelta) << sc->lg_delta);
+			pind++;
+		}
+	}
+	for (int i = pind; i <= (int)SC_NPSIZES; i++) {
+		sz_pind2sz_tab[pind] = sc_data->large_maxclass + PAGE;
+	}
+}
+
+JEMALLOC_ALIGNED(CACHELINE)
+size_t sz_index2size_tab[SC_NSIZES];
+
+static void
+sz_boot_index2size_tab(const sc_data_t *sc_data) {
+	for (unsigned i = 0; i < SC_NSIZES; i++) {
+		const sc_t *sc = &sc_data->sc[i];
+		sz_index2size_tab[i] = (ZU(1) << sc->lg_base)
+		    + (ZU(sc->ndelta) << (sc->lg_delta));
+	}
+}
+
+/*
+ * To keep this table small, we divide sizes by the tiny min size, which gives
+ * the smallest interval for which the result can change.
+ */
+JEMALLOC_ALIGNED(CACHELINE)
+uint8_t sz_size2index_tab[(SC_LOOKUP_MAXCLASS >> SC_LG_TINY_MIN) + 1];
+
+static void
+sz_boot_size2index_tab(const sc_data_t *sc_data) {
+	size_t dst_max = (SC_LOOKUP_MAXCLASS >> SC_LG_TINY_MIN) + 1;
+	size_t dst_ind = 0;
+	for (unsigned sc_ind = 0; sc_ind < SC_NSIZES && dst_ind < dst_max;
+	    sc_ind++) {
+		const sc_t *sc = &sc_data->sc[sc_ind];
+		size_t sz = (ZU(1) << sc->lg_base)
+		    + (ZU(sc->ndelta) << sc->lg_delta);
+		size_t max_ind = ((sz + (ZU(1) << SC_LG_TINY_MIN) - 1)
+				   >> SC_LG_TINY_MIN);
+		for (; dst_ind <= max_ind && dst_ind < dst_max; dst_ind++) {
+			sz_size2index_tab[dst_ind] = sc_ind;
+		}
+	}
+}
+
+void
+sz_boot(const sc_data_t *sc_data, bool cache_oblivious) {
+	sz_large_pad = cache_oblivious ? PAGE : 0;
+	sz_boot_pind2sz_tab(sc_data);
+	sz_boot_index2size_tab(sc_data);
+	sz_boot_size2index_tab(sc_data);
+}
diff --git a/deps/jemalloc/src/tcache.c b/deps/jemalloc/src/tcache.c
new file mode 100644
index 0000000..fa16732
--- /dev/null
+++ b/deps/jemalloc/src/tcache.c
@@ -0,0 +1,1101 @@
+#include "jemalloc/internal/jemalloc_preamble.h"
+#include "jemalloc/internal/jemalloc_internal_includes.h"
+
+#include "jemalloc/internal/assert.h"
+#include "jemalloc/internal/mutex.h"
+#include "jemalloc/internal/safety_check.h"
+#include "jemalloc/internal/san.h"
+#include "jemalloc/internal/sc.h"
+
+/******************************************************************************/
+/* Data. */
+
+bool opt_tcache = true;
+
+/* tcache_maxclass is set to 32KB by default.  */
+size_t opt_tcache_max = ((size_t)1) << 15;
+
+/* Reasonable defaults for min and max values. */
+unsigned opt_tcache_nslots_small_min = 20;
+unsigned opt_tcache_nslots_small_max = 200;
+unsigned opt_tcache_nslots_large = 20;
+
+/*
+ * We attempt to make the number of slots in a tcache bin for a given size class
+ * equal to the number of objects in a slab times some multiplier.  By default,
+ * the multiplier is 2 (i.e. we set the maximum number of objects in the tcache
+ * to twice the number of objects in a slab).
+ * This is bounded by some other constraints as well, like the fact that it
+ * must be even, must be less than opt_tcache_nslots_small_max, etc..
+ */
+ssize_t	opt_lg_tcache_nslots_mul = 1;
+
+/*
+ * Number of allocation bytes between tcache incremental GCs.  Again, this
+ * default just seems to work well; more tuning is possible.
+ */
+size_t opt_tcache_gc_incr_bytes = 65536;
+
+/*
+ * With default settings, we may end up flushing small bins frequently with
+ * small flush amounts.  To limit this tendency, we can set a number of bytes to
+ * "delay" by.  If we try to flush N M-byte items, we decrease that size-class's
+ * delay by N * M.  So, if delay is 1024 and we're looking at the 64-byte size
+ * class, we won't do any flushing until we've been asked to flush 1024/64 == 16
+ * items.  This can happen in any configuration (i.e. being asked to flush 16
+ * items once, or 4 items 4 times).
+ *
+ * Practically, this is stored as a count of items in a uint8_t, so the
+ * effective maximum value for a size class is 255 * sz.
+ */
+size_t opt_tcache_gc_delay_bytes = 0;
+
+/*
+ * When a cache bin is flushed because it's full, how much of it do we flush?
+ * By default, we flush half the maximum number of items.
+ */
+unsigned opt_lg_tcache_flush_small_div = 1;
+unsigned opt_lg_tcache_flush_large_div = 1;
+
+cache_bin_info_t	*tcache_bin_info;
+
+/* Total stack size required (per tcache).  Include the padding above. */
+static size_t tcache_bin_alloc_size;
+static size_t tcache_bin_alloc_alignment;
+
+/* Number of cache bins enabled, including both large and small. */
+unsigned		nhbins;
+/* Max size class to be cached (can be small or large). */
+size_t			tcache_maxclass;
+
+tcaches_t		*tcaches;
+
+/* Index of first element within tcaches that has never been used. */
+static unsigned		tcaches_past;
+
+/* Head of singly linked list tracking available tcaches elements. */
+static tcaches_t	*tcaches_avail;
+
+/* Protects tcaches{,_past,_avail}. */
+static malloc_mutex_t	tcaches_mtx;
+
+/******************************************************************************/
+
+size_t
+tcache_salloc(tsdn_t *tsdn, const void *ptr) {
+	return arena_salloc(tsdn, ptr);
+}
+
+uint64_t
+tcache_gc_new_event_wait(tsd_t *tsd) {
+	return opt_tcache_gc_incr_bytes;
+}
+
+uint64_t
+tcache_gc_postponed_event_wait(tsd_t *tsd) {
+	return TE_MIN_START_WAIT;
+}
+
+uint64_t
+tcache_gc_dalloc_new_event_wait(tsd_t *tsd) {
+	return opt_tcache_gc_incr_bytes;
+}
+
+uint64_t
+tcache_gc_dalloc_postponed_event_wait(tsd_t *tsd) {
+	return TE_MIN_START_WAIT;
+}
+
+static uint8_t
+tcache_gc_item_delay_compute(szind_t szind) {
+	assert(szind < SC_NBINS);
+	size_t sz = sz_index2size(szind);
+	size_t item_delay = opt_tcache_gc_delay_bytes / sz;
+	size_t delay_max = ZU(1)
+	    << (sizeof(((tcache_slow_t *)NULL)->bin_flush_delay_items[0]) * 8);
+	if (item_delay >= delay_max) {
+		item_delay = delay_max - 1;
+	}
+	return (uint8_t)item_delay;
+}
+
+static void
+tcache_gc_small(tsd_t *tsd, tcache_slow_t *tcache_slow, tcache_t *tcache,
+    szind_t szind) {
+	/* Aim to flush 3/4 of items below low-water. */
+	assert(szind < SC_NBINS);
+
+	cache_bin_t *cache_bin = &tcache->bins[szind];
+	cache_bin_sz_t ncached = cache_bin_ncached_get_local(cache_bin,
+	    &tcache_bin_info[szind]);
+	cache_bin_sz_t low_water = cache_bin_low_water_get(cache_bin,
+	    &tcache_bin_info[szind]);
+	assert(!tcache_slow->bin_refilled[szind]);
+
+	size_t nflush = low_water - (low_water >> 2);
+	if (nflush < tcache_slow->bin_flush_delay_items[szind]) {
+		/* Workaround for a conversion warning. */
+		uint8_t nflush_uint8 = (uint8_t)nflush;
+		assert(sizeof(tcache_slow->bin_flush_delay_items[0]) ==
+		    sizeof(nflush_uint8));
+		tcache_slow->bin_flush_delay_items[szind] -= nflush_uint8;
+		return;
+	} else {
+		tcache_slow->bin_flush_delay_items[szind]
+		    = tcache_gc_item_delay_compute(szind);
+	}
+
+	tcache_bin_flush_small(tsd, tcache, cache_bin, szind,
+	    (unsigned)(ncached - nflush));
+
+	/*
+	 * Reduce fill count by 2X.  Limit lg_fill_div such that
+	 * the fill count is always at least 1.
+	 */
+	if ((cache_bin_info_ncached_max(&tcache_bin_info[szind])
+	    >> (tcache_slow->lg_fill_div[szind] + 1)) >= 1) {
+		tcache_slow->lg_fill_div[szind]++;
+	}
+}
+
+static void
+tcache_gc_large(tsd_t *tsd, tcache_slow_t *tcache_slow, tcache_t *tcache,
+    szind_t szind) {
+	/* Like the small GC; flush 3/4 of untouched items. */
+	assert(szind >= SC_NBINS);
+	cache_bin_t *cache_bin = &tcache->bins[szind];
+	cache_bin_sz_t ncached = cache_bin_ncached_get_local(cache_bin,
+	    &tcache_bin_info[szind]);
+	cache_bin_sz_t low_water = cache_bin_low_water_get(cache_bin,
+	    &tcache_bin_info[szind]);
+	tcache_bin_flush_large(tsd, tcache, cache_bin, szind,
+	    (unsigned)(ncached - low_water + (low_water >> 2)));
+}
+
+static void
+tcache_event(tsd_t *tsd) {
+	tcache_t *tcache = tcache_get(tsd);
+	if (tcache == NULL) {
+		return;
+	}
+
+	tcache_slow_t *tcache_slow = tsd_tcache_slowp_get(tsd);
+	szind_t szind = tcache_slow->next_gc_bin;
+	bool is_small = (szind < SC_NBINS);
+	cache_bin_t *cache_bin = &tcache->bins[szind];
+
+	tcache_bin_flush_stashed(tsd, tcache, cache_bin, szind, is_small);
+
+	cache_bin_sz_t low_water = cache_bin_low_water_get(cache_bin,
+	    &tcache_bin_info[szind]);
+	if (low_water > 0) {
+		if (is_small) {
+			tcache_gc_small(tsd, tcache_slow, tcache, szind);
+		} else {
+			tcache_gc_large(tsd, tcache_slow, tcache, szind);
+		}
+	} else if (is_small && tcache_slow->bin_refilled[szind]) {
+		assert(low_water == 0);
+		/*
+		 * Increase fill count by 2X for small bins.  Make sure
+		 * lg_fill_div stays greater than 0.
+		 */
+		if (tcache_slow->lg_fill_div[szind] > 1) {
+			tcache_slow->lg_fill_div[szind]--;
+		}
+		tcache_slow->bin_refilled[szind] = false;
+	}
+	cache_bin_low_water_set(cache_bin);
+
+	tcache_slow->next_gc_bin++;
+	if (tcache_slow->next_gc_bin == nhbins) {
+		tcache_slow->next_gc_bin = 0;
+	}
+}
+
+void
+tcache_gc_event_handler(tsd_t *tsd, uint64_t elapsed) {
+	assert(elapsed == TE_INVALID_ELAPSED);
+	tcache_event(tsd);
+}
+
+void
+tcache_gc_dalloc_event_handler(tsd_t *tsd, uint64_t elapsed) {
+	assert(elapsed == TE_INVALID_ELAPSED);
+	tcache_event(tsd);
+}
+
+void *
+tcache_alloc_small_hard(tsdn_t *tsdn, arena_t *arena,
+    tcache_t *tcache, cache_bin_t *cache_bin, szind_t binind,
+    bool *tcache_success) {
+	tcache_slow_t *tcache_slow = tcache->tcache_slow;
+	void *ret;
+
+	assert(tcache_slow->arena != NULL);
+	unsigned nfill = cache_bin_info_ncached_max(&tcache_bin_info[binind])
+	    >> tcache_slow->lg_fill_div[binind];
+	arena_cache_bin_fill_small(tsdn, arena, cache_bin,
+	    &tcache_bin_info[binind], binind, nfill);
+	tcache_slow->bin_refilled[binind] = true;
+	ret = cache_bin_alloc(cache_bin, tcache_success);
+
+	return ret;
+}
+
+static const void *
+tcache_bin_flush_ptr_getter(void *arr_ctx, size_t ind) {
+	cache_bin_ptr_array_t *arr = (cache_bin_ptr_array_t *)arr_ctx;
+	return arr->ptr[ind];
+}
+
+static void
+tcache_bin_flush_metadata_visitor(void *szind_sum_ctx,
+    emap_full_alloc_ctx_t *alloc_ctx) {
+	size_t *szind_sum = (size_t *)szind_sum_ctx;
+	*szind_sum -= alloc_ctx->szind;
+	util_prefetch_write_range(alloc_ctx->edata, sizeof(edata_t));
+}
+
+JEMALLOC_NOINLINE static void
+tcache_bin_flush_size_check_fail(cache_bin_ptr_array_t *arr, szind_t szind,
+    size_t nptrs, emap_batch_lookup_result_t *edatas) {
+	bool found_mismatch = false;
+	for (size_t i = 0; i < nptrs; i++) {
+		szind_t true_szind = edata_szind_get(edatas[i].edata);
+		if (true_szind != szind) {
+			found_mismatch = true;
+			safety_check_fail_sized_dealloc(
+			    /* current_dealloc */ false,
+			    /* ptr */ tcache_bin_flush_ptr_getter(arr, i),
+			    /* true_size */ sz_index2size(true_szind),
+			    /* input_size */ sz_index2size(szind));
+		}
+	}
+	assert(found_mismatch);
+}
+
+static void
+tcache_bin_flush_edatas_lookup(tsd_t *tsd, cache_bin_ptr_array_t *arr,
+    szind_t binind, size_t nflush, emap_batch_lookup_result_t *edatas) {
+
+	/*
+	 * This gets compiled away when config_opt_safety_checks is false.
+	 * Checks for sized deallocation bugs, failing early rather than
+	 * corrupting metadata.
+	 */
+	size_t szind_sum = binind * nflush;
+	emap_edata_lookup_batch(tsd, &arena_emap_global, nflush,
+	    &tcache_bin_flush_ptr_getter, (void *)arr,
+	    &tcache_bin_flush_metadata_visitor, (void *)&szind_sum,
+	    edatas);
+	if (config_opt_safety_checks && unlikely(szind_sum != 0)) {
+		tcache_bin_flush_size_check_fail(arr, binind, nflush, edatas);
+	}
+}
+
+JEMALLOC_ALWAYS_INLINE bool
+tcache_bin_flush_match(edata_t *edata, unsigned cur_arena_ind,
+    unsigned cur_binshard, bool small) {
+	if (small) {
+		return edata_arena_ind_get(edata) == cur_arena_ind
+		    && edata_binshard_get(edata) == cur_binshard;
+	} else {
+		return edata_arena_ind_get(edata) == cur_arena_ind;
+	}
+}
+
+JEMALLOC_ALWAYS_INLINE void
+tcache_bin_flush_impl(tsd_t *tsd, tcache_t *tcache, cache_bin_t *cache_bin,
+    szind_t binind, cache_bin_ptr_array_t *ptrs, unsigned nflush, bool small) {
+	tcache_slow_t *tcache_slow = tcache->tcache_slow;
+	/*
+	 * A couple lookup calls take tsdn; declare it once for convenience
+	 * instead of calling tsd_tsdn(tsd) all the time.
+	 */
+	tsdn_t *tsdn = tsd_tsdn(tsd);
+
+	if (small) {
+		assert(binind < SC_NBINS);
+	} else {
+		assert(binind < nhbins);
+	}
+	arena_t *tcache_arena = tcache_slow->arena;
+	assert(tcache_arena != NULL);
+
+	/*
+	 * Variable length array must have > 0 length; the last element is never
+	 * touched (it's just included to satisfy the no-zero-length rule).
+	 */
+	VARIABLE_ARRAY(emap_batch_lookup_result_t, item_edata, nflush + 1);
+	tcache_bin_flush_edatas_lookup(tsd, ptrs, binind, nflush, item_edata);
+
+	/*
+	 * The slabs where we freed the last remaining object in the slab (and
+	 * so need to free the slab itself).
+	 * Used only if small == true.
+	 */
+	unsigned dalloc_count = 0;
+	VARIABLE_ARRAY(edata_t *, dalloc_slabs, nflush + 1);
+
+	/*
+	 * We're about to grab a bunch of locks.  If one of them happens to be
+	 * the one guarding the arena-level stats counters we flush our
+	 * thread-local ones to, we do so under one critical section.
+	 */
+	bool merged_stats = false;
+	while (nflush > 0) {
+		/* Lock the arena, or bin, associated with the first object. */
+		edata_t *edata = item_edata[0].edata;
+		unsigned cur_arena_ind = edata_arena_ind_get(edata);
+		arena_t *cur_arena = arena_get(tsdn, cur_arena_ind, false);
+
+		/*
+		 * These assignments are always overwritten when small is true,
+		 * and their values are always ignored when small is false, but
+		 * to avoid the technical UB when we pass them as parameters, we
+		 * need to intialize them.
+		 */
+		unsigned cur_binshard = 0;
+		bin_t *cur_bin = NULL;
+		if (small) {
+			cur_binshard = edata_binshard_get(edata);
+			cur_bin = arena_get_bin(cur_arena, binind,
+			    cur_binshard);
+			assert(cur_binshard < bin_infos[binind].n_shards);
+			/*
+			 * If you're looking at profiles, you might think this
+			 * is a good place to prefetch the bin stats, which are
+			 * often a cache miss.  This turns out not to be
+			 * helpful on the workloads we've looked at, with moving
+			 * the bin stats next to the lock seeming to do better.
+			 */
+		}
+
+		if (small) {
+			malloc_mutex_lock(tsdn, &cur_bin->lock);
+		}
+		if (!small && !arena_is_auto(cur_arena)) {
+			malloc_mutex_lock(tsdn, &cur_arena->large_mtx);
+		}
+
+		/*
+		 * If we acquired the right lock and have some stats to flush,
+		 * flush them.
+		 */
+		if (config_stats && tcache_arena == cur_arena
+		    && !merged_stats) {
+			merged_stats = true;
+			if (small) {
+				cur_bin->stats.nflushes++;
+				cur_bin->stats.nrequests +=
+				    cache_bin->tstats.nrequests;
+				cache_bin->tstats.nrequests = 0;
+			} else {
+				arena_stats_large_flush_nrequests_add(tsdn,
+				    &tcache_arena->stats, binind,
+				    cache_bin->tstats.nrequests);
+				cache_bin->tstats.nrequests = 0;
+			}
+		}
+
+		/*
+		 * Large allocations need special prep done.  Afterwards, we can
+		 * drop the large lock.
+		 */
+		if (!small) {
+			for (unsigned i = 0; i < nflush; i++) {
+				void *ptr = ptrs->ptr[i];
+				edata = item_edata[i].edata;
+				assert(ptr != NULL && edata != NULL);
+
+				if (tcache_bin_flush_match(edata, cur_arena_ind,
+				    cur_binshard, small)) {
+					large_dalloc_prep_locked(tsdn,
+					    edata);
+				}
+			}
+		}
+		if (!small && !arena_is_auto(cur_arena)) {
+			malloc_mutex_unlock(tsdn, &cur_arena->large_mtx);
+		}
+
+		/* Deallocate whatever we can. */
+		unsigned ndeferred = 0;
+		/* Init only to avoid used-uninitialized warning. */
+		arena_dalloc_bin_locked_info_t dalloc_bin_info = {0};
+		if (small) {
+			arena_dalloc_bin_locked_begin(&dalloc_bin_info, binind);
+		}
+		for (unsigned i = 0; i < nflush; i++) {
+			void *ptr = ptrs->ptr[i];
+			edata = item_edata[i].edata;
+			assert(ptr != NULL && edata != NULL);
+			if (!tcache_bin_flush_match(edata, cur_arena_ind,
+			    cur_binshard, small)) {
+				/*
+				 * The object was allocated either via a
+				 * different arena, or a different bin in this
+				 * arena.  Either way, stash the object so that
+				 * it can be handled in a future pass.
+				 */
+				ptrs->ptr[ndeferred] = ptr;
+				item_edata[ndeferred].edata = edata;
+				ndeferred++;
+				continue;
+			}
+			if (small) {
+				if (arena_dalloc_bin_locked_step(tsdn,
+				    cur_arena, cur_bin, &dalloc_bin_info,
+				    binind, edata, ptr)) {
+					dalloc_slabs[dalloc_count] = edata;
+					dalloc_count++;
+				}
+			} else {
+				if (large_dalloc_safety_checks(edata, ptr,
+				    binind)) {
+					/* See the comment in isfree. */
+					continue;
+				}
+				large_dalloc_finish(tsdn, edata);
+			}
+		}
+
+		if (small) {
+			arena_dalloc_bin_locked_finish(tsdn, cur_arena, cur_bin,
+			    &dalloc_bin_info);
+			malloc_mutex_unlock(tsdn, &cur_bin->lock);
+		}
+		arena_decay_ticks(tsdn, cur_arena, nflush - ndeferred);
+		nflush = ndeferred;
+	}
+
+	/* Handle all deferred slab dalloc. */
+	assert(small || dalloc_count == 0);
+	for (unsigned i = 0; i < dalloc_count; i++) {
+		edata_t *slab = dalloc_slabs[i];
+		arena_slab_dalloc(tsdn, arena_get_from_edata(slab), slab);
+
+	}
+
+	if (config_stats && !merged_stats) {
+		if (small) {
+			/*
+			 * The flush loop didn't happen to flush to this
+			 * thread's arena, so the stats didn't get merged.
+			 * Manually do so now.
+			 */
+			bin_t *bin = arena_bin_choose(tsdn, tcache_arena,
+			    binind, NULL);
+			malloc_mutex_lock(tsdn, &bin->lock);
+			bin->stats.nflushes++;
+			bin->stats.nrequests += cache_bin->tstats.nrequests;
+			cache_bin->tstats.nrequests = 0;
+			malloc_mutex_unlock(tsdn, &bin->lock);
+		} else {
+			arena_stats_large_flush_nrequests_add(tsdn,
+			    &tcache_arena->stats, binind,
+			    cache_bin->tstats.nrequests);
+			cache_bin->tstats.nrequests = 0;
+		}
+	}
+
+}
+
+JEMALLOC_ALWAYS_INLINE void
+tcache_bin_flush_bottom(tsd_t *tsd, tcache_t *tcache, cache_bin_t *cache_bin,
+    szind_t binind, unsigned rem, bool small) {
+	tcache_bin_flush_stashed(tsd, tcache, cache_bin, binind, small);
+
+	cache_bin_sz_t ncached = cache_bin_ncached_get_local(cache_bin,
+	    &tcache_bin_info[binind]);
+	assert((cache_bin_sz_t)rem <= ncached);
+	unsigned nflush = ncached - rem;
+
+	CACHE_BIN_PTR_ARRAY_DECLARE(ptrs, nflush);
+	cache_bin_init_ptr_array_for_flush(cache_bin, &tcache_bin_info[binind],
+	    &ptrs, nflush);
+
+	tcache_bin_flush_impl(tsd, tcache, cache_bin, binind, &ptrs, nflush,
+	    small);
+
+	cache_bin_finish_flush(cache_bin, &tcache_bin_info[binind], &ptrs,
+	    ncached - rem);
+}
+
+void
+tcache_bin_flush_small(tsd_t *tsd, tcache_t *tcache, cache_bin_t *cache_bin,
+    szind_t binind, unsigned rem) {
+	tcache_bin_flush_bottom(tsd, tcache, cache_bin, binind, rem, true);
+}
+
+void
+tcache_bin_flush_large(tsd_t *tsd, tcache_t *tcache, cache_bin_t *cache_bin,
+    szind_t binind, unsigned rem) {
+	tcache_bin_flush_bottom(tsd, tcache, cache_bin, binind, rem, false);
+}
+
+/*
+ * Flushing stashed happens when 1) tcache fill, 2) tcache flush, or 3) tcache
+ * GC event.  This makes sure that the stashed items do not hold memory for too
+ * long, and new buffers can only be allocated when nothing is stashed.
+ *
+ * The downside is, the time between stash and flush may be relatively short,
+ * especially when the request rate is high.  It lowers the chance of detecting
+ * write-after-free -- however that is a delayed detection anyway, and is less
+ * of a focus than the memory overhead.
+ */
+void
+tcache_bin_flush_stashed(tsd_t *tsd, tcache_t *tcache, cache_bin_t *cache_bin,
+    szind_t binind, bool is_small) {
+	cache_bin_info_t *info = &tcache_bin_info[binind];
+	/*
+	 * The two below are for assertion only.  The content of original cached
+	 * items remain unchanged -- the stashed items reside on the other end
+	 * of the stack.  Checking the stack head and ncached to verify.
+	 */
+	void *head_content = *cache_bin->stack_head;
+	cache_bin_sz_t orig_cached = cache_bin_ncached_get_local(cache_bin,
+	    info);
+
+	cache_bin_sz_t nstashed = cache_bin_nstashed_get_local(cache_bin, info);
+	assert(orig_cached + nstashed <= cache_bin_info_ncached_max(info));
+	if (nstashed == 0) {
+		return;
+	}
+
+	CACHE_BIN_PTR_ARRAY_DECLARE(ptrs, nstashed);
+	cache_bin_init_ptr_array_for_stashed(cache_bin, binind, info, &ptrs,
+	    nstashed);
+	san_check_stashed_ptrs(ptrs.ptr, nstashed, sz_index2size(binind));
+	tcache_bin_flush_impl(tsd, tcache, cache_bin, binind, &ptrs, nstashed,
+	    is_small);
+	cache_bin_finish_flush_stashed(cache_bin, info);
+
+	assert(cache_bin_nstashed_get_local(cache_bin, info) == 0);
+	assert(cache_bin_ncached_get_local(cache_bin, info) == orig_cached);
+	assert(head_content == *cache_bin->stack_head);
+}
+
+void
+tcache_arena_associate(tsdn_t *tsdn, tcache_slow_t *tcache_slow,
+    tcache_t *tcache, arena_t *arena) {
+	assert(tcache_slow->arena == NULL);
+	tcache_slow->arena = arena;
+
+	if (config_stats) {
+		/* Link into list of extant tcaches. */
+		malloc_mutex_lock(tsdn, &arena->tcache_ql_mtx);
+
+		ql_elm_new(tcache_slow, link);
+		ql_tail_insert(&arena->tcache_ql, tcache_slow, link);
+		cache_bin_array_descriptor_init(
+		    &tcache_slow->cache_bin_array_descriptor, tcache->bins);
+		ql_tail_insert(&arena->cache_bin_array_descriptor_ql,
+		    &tcache_slow->cache_bin_array_descriptor, link);
+
+		malloc_mutex_unlock(tsdn, &arena->tcache_ql_mtx);
+	}
+}
+
+static void
+tcache_arena_dissociate(tsdn_t *tsdn, tcache_slow_t *tcache_slow,
+    tcache_t *tcache) {
+	arena_t *arena = tcache_slow->arena;
+	assert(arena != NULL);
+	if (config_stats) {
+		/* Unlink from list of extant tcaches. */
+		malloc_mutex_lock(tsdn, &arena->tcache_ql_mtx);
+		if (config_debug) {
+			bool in_ql = false;
+			tcache_slow_t *iter;
+			ql_foreach(iter, &arena->tcache_ql, link) {
+				if (iter == tcache_slow) {
+					in_ql = true;
+					break;
+				}
+			}
+			assert(in_ql);
+		}
+		ql_remove(&arena->tcache_ql, tcache_slow, link);
+		ql_remove(&arena->cache_bin_array_descriptor_ql,
+		    &tcache_slow->cache_bin_array_descriptor, link);
+		tcache_stats_merge(tsdn, tcache_slow->tcache, arena);
+		malloc_mutex_unlock(tsdn, &arena->tcache_ql_mtx);
+	}
+	tcache_slow->arena = NULL;
+}
+
+void
+tcache_arena_reassociate(tsdn_t *tsdn, tcache_slow_t *tcache_slow,
+    tcache_t *tcache, arena_t *arena) {
+	tcache_arena_dissociate(tsdn, tcache_slow, tcache);
+	tcache_arena_associate(tsdn, tcache_slow, tcache, arena);
+}
+
+bool
+tsd_tcache_enabled_data_init(tsd_t *tsd) {
+	/* Called upon tsd initialization. */
+	tsd_tcache_enabled_set(tsd, opt_tcache);
+	tsd_slow_update(tsd);
+
+	if (opt_tcache) {
+		/* Trigger tcache init. */
+		tsd_tcache_data_init(tsd);
+	}
+
+	return false;
+}
+
+static void
+tcache_init(tsd_t *tsd, tcache_slow_t *tcache_slow, tcache_t *tcache,
+    void *mem) {
+	tcache->tcache_slow = tcache_slow;
+	tcache_slow->tcache = tcache;
+
+	memset(&tcache_slow->link, 0, sizeof(ql_elm(tcache_t)));
+	tcache_slow->next_gc_bin = 0;
+	tcache_slow->arena = NULL;
+	tcache_slow->dyn_alloc = mem;
+
+	/*
+	 * We reserve cache bins for all small size classes, even if some may
+	 * not get used (i.e. bins higher than nhbins).  This allows the fast
+	 * and common paths to access cache bin metadata safely w/o worrying
+	 * about which ones are disabled.
+	 */
+	unsigned n_reserved_bins = nhbins < SC_NBINS ? SC_NBINS : nhbins;
+	memset(tcache->bins, 0, sizeof(cache_bin_t) * n_reserved_bins);
+
+	size_t cur_offset = 0;
+	cache_bin_preincrement(tcache_bin_info, nhbins, mem,
+	    &cur_offset);
+	for (unsigned i = 0; i < nhbins; i++) {
+		if (i < SC_NBINS) {
+			tcache_slow->lg_fill_div[i] = 1;
+			tcache_slow->bin_refilled[i] = false;
+			tcache_slow->bin_flush_delay_items[i]
+			    = tcache_gc_item_delay_compute(i);
+		}
+		cache_bin_t *cache_bin = &tcache->bins[i];
+		cache_bin_init(cache_bin, &tcache_bin_info[i], mem,
+		    &cur_offset);
+	}
+	/*
+	 * For small size classes beyond tcache_maxclass (i.e. nhbins < NBINS),
+	 * their cache bins are initialized to a state to safely and efficiently
+	 * fail all fastpath alloc / free, so that no additional check around
+	 * nhbins is needed on fastpath.
+	 */
+	for (unsigned i = nhbins; i < SC_NBINS; i++) {
+		/* Disabled small bins. */
+		cache_bin_t *cache_bin = &tcache->bins[i];
+		void *fake_stack = mem;
+		size_t fake_offset = 0;
+
+		cache_bin_init(cache_bin, &tcache_bin_info[i], fake_stack,
+		    &fake_offset);
+		assert(tcache_small_bin_disabled(i, cache_bin));
+	}
+
+	cache_bin_postincrement(tcache_bin_info, nhbins, mem,
+	    &cur_offset);
+	/* Sanity check that the whole stack is used. */
+	assert(cur_offset == tcache_bin_alloc_size);
+}
+
+/* Initialize auto tcache (embedded in TSD). */
+bool
+tsd_tcache_data_init(tsd_t *tsd) {
+	tcache_slow_t *tcache_slow = tsd_tcache_slowp_get_unsafe(tsd);
+	tcache_t *tcache = tsd_tcachep_get_unsafe(tsd);
+
+	assert(cache_bin_still_zero_initialized(&tcache->bins[0]));
+	size_t alignment = tcache_bin_alloc_alignment;
+	size_t size = sz_sa2u(tcache_bin_alloc_size, alignment);
+
+	void *mem = ipallocztm(tsd_tsdn(tsd), size, alignment, true, NULL,
+	    true, arena_get(TSDN_NULL, 0, true));
+	if (mem == NULL) {
+		return true;
+	}
+
+	tcache_init(tsd, tcache_slow, tcache, mem);
+	/*
+	 * Initialization is a bit tricky here.  After malloc init is done, all
+	 * threads can rely on arena_choose and associate tcache accordingly.
+	 * However, the thread that does actual malloc bootstrapping relies on
+	 * functional tsd, and it can only rely on a0.  In that case, we
+	 * associate its tcache to a0 temporarily, and later on
+	 * arena_choose_hard() will re-associate properly.
+	 */
+	tcache_slow->arena = NULL;
+	arena_t *arena;
+	if (!malloc_initialized()) {
+		/* If in initialization, assign to a0. */
+		arena = arena_get(tsd_tsdn(tsd), 0, false);
+		tcache_arena_associate(tsd_tsdn(tsd), tcache_slow, tcache,
+		    arena);
+	} else {
+		arena = arena_choose(tsd, NULL);
+		/* This may happen if thread.tcache.enabled is used. */
+		if (tcache_slow->arena == NULL) {
+			tcache_arena_associate(tsd_tsdn(tsd), tcache_slow,
+			    tcache, arena);
+		}
+	}
+	assert(arena == tcache_slow->arena);
+
+	return false;
+}
+
+/* Created manual tcache for tcache.create mallctl. */
+tcache_t *
+tcache_create_explicit(tsd_t *tsd) {
+	/*
+	 * We place the cache bin stacks, then the tcache_t, then a pointer to
+	 * the beginning of the whole allocation (for freeing).  The makes sure
+	 * the cache bins have the requested alignment.
+	 */
+	size_t size = tcache_bin_alloc_size + sizeof(tcache_t)
+	    + sizeof(tcache_slow_t);
+	/* Naturally align the pointer stacks. */
+	size = PTR_CEILING(size);
+	size = sz_sa2u(size, tcache_bin_alloc_alignment);
+
+	void *mem = ipallocztm(tsd_tsdn(tsd), size, tcache_bin_alloc_alignment,
+	    true, NULL, true, arena_get(TSDN_NULL, 0, true));
+	if (mem == NULL) {
+		return NULL;
+	}
+	tcache_t *tcache = (void *)((uintptr_t)mem + tcache_bin_alloc_size);
+	tcache_slow_t *tcache_slow =
+	    (void *)((uintptr_t)mem + tcache_bin_alloc_size + sizeof(tcache_t));
+	tcache_init(tsd, tcache_slow, tcache, mem);
+
+	tcache_arena_associate(tsd_tsdn(tsd), tcache_slow, tcache,
+	    arena_ichoose(tsd, NULL));
+
+	return tcache;
+}
+
+static void
+tcache_flush_cache(tsd_t *tsd, tcache_t *tcache) {
+	tcache_slow_t *tcache_slow = tcache->tcache_slow;
+	assert(tcache_slow->arena != NULL);
+
+	for (unsigned i = 0; i < nhbins; i++) {
+		cache_bin_t *cache_bin = &tcache->bins[i];
+		if (i < SC_NBINS) {
+			tcache_bin_flush_small(tsd, tcache, cache_bin, i, 0);
+		} else {
+			tcache_bin_flush_large(tsd, tcache, cache_bin, i, 0);
+		}
+		if (config_stats) {
+			assert(cache_bin->tstats.nrequests == 0);
+		}
+	}
+}
+
+void
+tcache_flush(tsd_t *tsd) {
+	assert(tcache_available(tsd));
+	tcache_flush_cache(tsd, tsd_tcachep_get(tsd));
+}
+
+static void
+tcache_destroy(tsd_t *tsd, tcache_t *tcache, bool tsd_tcache) {
+	tcache_slow_t *tcache_slow = tcache->tcache_slow;
+	tcache_flush_cache(tsd, tcache);
+	arena_t *arena = tcache_slow->arena;
+	tcache_arena_dissociate(tsd_tsdn(tsd), tcache_slow, tcache);
+
+	if (tsd_tcache) {
+		cache_bin_t *cache_bin = &tcache->bins[0];
+		cache_bin_assert_empty(cache_bin, &tcache_bin_info[0]);
+	}
+	idalloctm(tsd_tsdn(tsd), tcache_slow->dyn_alloc, NULL, NULL, true,
+	    true);
+
+	/*
+	 * The deallocation and tcache flush above may not trigger decay since
+	 * we are on the tcache shutdown path (potentially with non-nominal
+	 * tsd).  Manually trigger decay to avoid pathological cases.  Also
+	 * include arena 0 because the tcache array is allocated from it.
+	 */
+	arena_decay(tsd_tsdn(tsd), arena_get(tsd_tsdn(tsd), 0, false),
+	    false, false);
+
+	if (arena_nthreads_get(arena, false) == 0 &&
+	    !background_thread_enabled()) {
+		/* Force purging when no threads assigned to the arena anymore. */
+		arena_decay(tsd_tsdn(tsd), arena,
+		    /* is_background_thread */ false, /* all */ true);
+	} else {
+		arena_decay(tsd_tsdn(tsd), arena,
+		    /* is_background_thread */ false, /* all */ false);
+	}
+}
+
+/* For auto tcache (embedded in TSD) only. */
+void
+tcache_cleanup(tsd_t *tsd) {
+	tcache_t *tcache = tsd_tcachep_get(tsd);
+	if (!tcache_available(tsd)) {
+		assert(tsd_tcache_enabled_get(tsd) == false);
+		assert(cache_bin_still_zero_initialized(&tcache->bins[0]));
+		return;
+	}
+	assert(tsd_tcache_enabled_get(tsd));
+	assert(!cache_bin_still_zero_initialized(&tcache->bins[0]));
+
+	tcache_destroy(tsd, tcache, true);
+	if (config_debug) {
+		/*
+		 * For debug testing only, we want to pretend we're still in the
+		 * zero-initialized state.
+		 */
+		memset(tcache->bins, 0, sizeof(cache_bin_t) * nhbins);
+	}
+}
+
+void
+tcache_stats_merge(tsdn_t *tsdn, tcache_t *tcache, arena_t *arena) {
+	cassert(config_stats);
+
+	/* Merge and reset tcache stats. */
+	for (unsigned i = 0; i < nhbins; i++) {
+		cache_bin_t *cache_bin = &tcache->bins[i];
+		if (i < SC_NBINS) {
+			bin_t *bin = arena_bin_choose(tsdn, arena, i, NULL);
+			malloc_mutex_lock(tsdn, &bin->lock);
+			bin->stats.nrequests += cache_bin->tstats.nrequests;
+			malloc_mutex_unlock(tsdn, &bin->lock);
+		} else {
+			arena_stats_large_flush_nrequests_add(tsdn,
+			    &arena->stats, i, cache_bin->tstats.nrequests);
+		}
+		cache_bin->tstats.nrequests = 0;
+	}
+}
+
+static bool
+tcaches_create_prep(tsd_t *tsd, base_t *base) {
+	bool err;
+
+	malloc_mutex_assert_owner(tsd_tsdn(tsd), &tcaches_mtx);
+
+	if (tcaches == NULL) {
+		tcaches = base_alloc(tsd_tsdn(tsd), base,
+		    sizeof(tcache_t *) * (MALLOCX_TCACHE_MAX+1), CACHELINE);
+		if (tcaches == NULL) {
+			err = true;
+			goto label_return;
+		}
+	}
+
+	if (tcaches_avail == NULL && tcaches_past > MALLOCX_TCACHE_MAX) {
+		err = true;
+		goto label_return;
+	}
+
+	err = false;
+label_return:
+	return err;
+}
+
+bool
+tcaches_create(tsd_t *tsd, base_t *base, unsigned *r_ind) {
+	witness_assert_depth(tsdn_witness_tsdp_get(tsd_tsdn(tsd)), 0);
+
+	bool err;
+
+	malloc_mutex_lock(tsd_tsdn(tsd), &tcaches_mtx);
+
+	if (tcaches_create_prep(tsd, base)) {
+		err = true;
+		goto label_return;
+	}
+
+	tcache_t *tcache = tcache_create_explicit(tsd);
+	if (tcache == NULL) {
+		err = true;
+		goto label_return;
+	}
+
+	tcaches_t *elm;
+	if (tcaches_avail != NULL) {
+		elm = tcaches_avail;
+		tcaches_avail = tcaches_avail->next;
+		elm->tcache = tcache;
+		*r_ind = (unsigned)(elm - tcaches);
+	} else {
+		elm = &tcaches[tcaches_past];
+		elm->tcache = tcache;
+		*r_ind = tcaches_past;
+		tcaches_past++;
+	}
+
+	err = false;
+label_return:
+	malloc_mutex_unlock(tsd_tsdn(tsd), &tcaches_mtx);
+	witness_assert_depth(tsdn_witness_tsdp_get(tsd_tsdn(tsd)), 0);
+	return err;
+}
+
+static tcache_t *
+tcaches_elm_remove(tsd_t *tsd, tcaches_t *elm, bool allow_reinit) {
+	malloc_mutex_assert_owner(tsd_tsdn(tsd), &tcaches_mtx);
+
+	if (elm->tcache == NULL) {
+		return NULL;
+	}
+	tcache_t *tcache = elm->tcache;
+	if (allow_reinit) {
+		elm->tcache = TCACHES_ELM_NEED_REINIT;
+	} else {
+		elm->tcache = NULL;
+	}
+
+	if (tcache == TCACHES_ELM_NEED_REINIT) {
+		return NULL;
+	}
+	return tcache;
+}
+
+void
+tcaches_flush(tsd_t *tsd, unsigned ind) {
+	malloc_mutex_lock(tsd_tsdn(tsd), &tcaches_mtx);
+	tcache_t *tcache = tcaches_elm_remove(tsd, &tcaches[ind], true);
+	malloc_mutex_unlock(tsd_tsdn(tsd), &tcaches_mtx);
+	if (tcache != NULL) {
+		/* Destroy the tcache; recreate in tcaches_get() if needed. */
+		tcache_destroy(tsd, tcache, false);
+	}
+}
+
+void
+tcaches_destroy(tsd_t *tsd, unsigned ind) {
+	malloc_mutex_lock(tsd_tsdn(tsd), &tcaches_mtx);
+	tcaches_t *elm = &tcaches[ind];
+	tcache_t *tcache = tcaches_elm_remove(tsd, elm, false);
+	elm->next = tcaches_avail;
+	tcaches_avail = elm;
+	malloc_mutex_unlock(tsd_tsdn(tsd), &tcaches_mtx);
+	if (tcache != NULL) {
+		tcache_destroy(tsd, tcache, false);
+	}
+}
+
+static unsigned
+tcache_ncached_max_compute(szind_t szind) {
+	if (szind >= SC_NBINS) {
+		assert(szind < nhbins);
+		return opt_tcache_nslots_large;
+	}
+	unsigned slab_nregs = bin_infos[szind].nregs;
+
+	/* We may modify these values; start with the opt versions. */
+	unsigned nslots_small_min = opt_tcache_nslots_small_min;
+	unsigned nslots_small_max = opt_tcache_nslots_small_max;
+
+	/*
+	 * Clamp values to meet our constraints -- even, nonzero, min < max, and
+	 * suitable for a cache bin size.
+	 */
+	if (opt_tcache_nslots_small_max > CACHE_BIN_NCACHED_MAX) {
+		nslots_small_max = CACHE_BIN_NCACHED_MAX;
+	}
+	if (nslots_small_min % 2 != 0) {
+		nslots_small_min++;
+	}
+	if (nslots_small_max % 2 != 0) {
+		nslots_small_max--;
+	}
+	if (nslots_small_min < 2) {
+		nslots_small_min = 2;
+	}
+	if (nslots_small_max < 2) {
+		nslots_small_max = 2;
+	}
+	if (nslots_small_min > nslots_small_max) {
+		nslots_small_min = nslots_small_max;
+	}
+
+	unsigned candidate;
+	if (opt_lg_tcache_nslots_mul < 0) {
+		candidate = slab_nregs >> (-opt_lg_tcache_nslots_mul);
+	} else {
+		candidate = slab_nregs << opt_lg_tcache_nslots_mul;
+	}
+	if (candidate % 2 != 0) {
+		/*
+		 * We need the candidate size to be even -- we assume that we
+		 * can divide by two and get a positive number (e.g. when
+		 * flushing).
+		 */
+		++candidate;
+	}
+	if (candidate <= nslots_small_min) {
+		return nslots_small_min;
+	} else if (candidate <= nslots_small_max) {
+		return candidate;
+	} else {
+		return nslots_small_max;
+	}
+}
+
+bool
+tcache_boot(tsdn_t *tsdn, base_t *base) {
+	tcache_maxclass = sz_s2u(opt_tcache_max);
+	assert(tcache_maxclass <= TCACHE_MAXCLASS_LIMIT);
+	nhbins = sz_size2index(tcache_maxclass) + 1;
+
+	if (malloc_mutex_init(&tcaches_mtx, "tcaches", WITNESS_RANK_TCACHES,
+	    malloc_mutex_rank_exclusive)) {
+		return true;
+	}
+
+	/* Initialize tcache_bin_info.  See comments in tcache_init(). */
+	unsigned n_reserved_bins = nhbins < SC_NBINS ? SC_NBINS : nhbins;
+	size_t size = n_reserved_bins * sizeof(cache_bin_info_t);
+	tcache_bin_info = (cache_bin_info_t *)base_alloc(tsdn, base, size,
+	    CACHELINE);
+	if (tcache_bin_info == NULL) {
+		return true;
+	}
+
+	for (szind_t i = 0; i < nhbins; i++) {
+		unsigned ncached_max = tcache_ncached_max_compute(i);
+		cache_bin_info_init(&tcache_bin_info[i], ncached_max);
+	}
+	for (szind_t i = nhbins; i < SC_NBINS; i++) {
+		/* Disabled small bins. */
+		cache_bin_info_init(&tcache_bin_info[i], 0);
+		assert(tcache_small_bin_disabled(i, NULL));
+	}
+
+	cache_bin_info_compute_alloc(tcache_bin_info, nhbins,
+	    &tcache_bin_alloc_size, &tcache_bin_alloc_alignment);
+
+	return false;
+}
+
+void
+tcache_prefork(tsdn_t *tsdn) {
+	malloc_mutex_prefork(tsdn, &tcaches_mtx);
+}
+
+void
+tcache_postfork_parent(tsdn_t *tsdn) {
+	malloc_mutex_postfork_parent(tsdn, &tcaches_mtx);
+}
+
+void
+tcache_postfork_child(tsdn_t *tsdn) {
+	malloc_mutex_postfork_child(tsdn, &tcaches_mtx);
+}
+
+void tcache_assert_initialized(tcache_t *tcache) {
+	assert(!cache_bin_still_zero_initialized(&tcache->bins[0]));
+}
diff --git a/deps/jemalloc/src/test_hooks.c b/deps/jemalloc/src/test_hooks.c
new file mode 100644
index 0000000..ace00d9
--- /dev/null
+++ b/deps/jemalloc/src/test_hooks.c
@@ -0,0 +1,12 @@
+#include "jemalloc/internal/jemalloc_preamble.h"
+
+/*
+ * The hooks are a little bit screwy -- they're not genuinely exported in the
+ * sense that we want them available to end-users, but we do want them visible
+ * from outside the generated library, so that we can use them in test code.
+ */
+JEMALLOC_EXPORT
+void (*test_hooks_arena_new_hook)() = NULL;
+
+JEMALLOC_EXPORT
+void (*test_hooks_libc_hook)() = NULL;
diff --git a/deps/jemalloc/src/thread_event.c b/deps/jemalloc/src/thread_event.c
new file mode 100644
index 0000000..37eb582
--- /dev/null
+++ b/deps/jemalloc/src/thread_event.c
@@ -0,0 +1,343 @@
+#include "jemalloc/internal/jemalloc_preamble.h"
+#include "jemalloc/internal/jemalloc_internal_includes.h"
+
+#include "jemalloc/internal/thread_event.h"
+
+/*
+ * Signatures for event specific functions.  These functions should be defined
+ * by the modules owning each event.  The signatures here verify that the
+ * definitions follow the right format.
+ *
+ * The first two are functions computing new / postponed event wait time.  New
+ * event wait time is the time till the next event if an event is currently
+ * being triggered; postponed event wait time is the time till the next event
+ * if an event should be triggered but needs to be postponed, e.g. when the TSD
+ * is not nominal or during reentrancy.
+ *
+ * The third is the event handler function, which is called whenever an event
+ * is triggered.  The parameter is the elapsed time since the last time an
+ * event of the same type was triggered.
+ */
+#define E(event, condition_unused, is_alloc_event_unused)		\
+uint64_t event##_new_event_wait(tsd_t *tsd);				\
+uint64_t event##_postponed_event_wait(tsd_t *tsd);			\
+void event##_event_handler(tsd_t *tsd, uint64_t elapsed);
+
+ITERATE_OVER_ALL_EVENTS
+#undef E
+
+/* Signatures for internal functions fetching elapsed time. */
+#define E(event, condition_unused, is_alloc_event_unused)		\
+static uint64_t event##_fetch_elapsed(tsd_t *tsd);
+
+ITERATE_OVER_ALL_EVENTS
+#undef E
+
+static uint64_t
+tcache_gc_fetch_elapsed(tsd_t *tsd) {
+	return TE_INVALID_ELAPSED;
+}
+
+static uint64_t
+tcache_gc_dalloc_fetch_elapsed(tsd_t *tsd) {
+	return TE_INVALID_ELAPSED;
+}
+
+static uint64_t
+prof_sample_fetch_elapsed(tsd_t *tsd) {
+	uint64_t last_event = thread_allocated_last_event_get(tsd);
+	uint64_t last_sample_event = prof_sample_last_event_get(tsd);
+	prof_sample_last_event_set(tsd, last_event);
+	return last_event - last_sample_event;
+}
+
+static uint64_t
+stats_interval_fetch_elapsed(tsd_t *tsd) {
+	uint64_t last_event = thread_allocated_last_event_get(tsd);
+	uint64_t last_stats_event = stats_interval_last_event_get(tsd);
+	stats_interval_last_event_set(tsd, last_event);
+	return last_event - last_stats_event;
+}
+
+static uint64_t
+peak_alloc_fetch_elapsed(tsd_t *tsd) {
+	return TE_INVALID_ELAPSED;
+}
+
+static uint64_t
+peak_dalloc_fetch_elapsed(tsd_t *tsd) {
+	return TE_INVALID_ELAPSED;
+}
+
+/* Per event facilities done. */
+
+static bool
+te_ctx_has_active_events(te_ctx_t *ctx) {
+	assert(config_debug);
+#define E(event, condition, alloc_event)			       \
+	if (condition && alloc_event == ctx->is_alloc) {	       \
+		return true;					       \
+	}
+	ITERATE_OVER_ALL_EVENTS
+#undef E
+	return false;
+}
+
+static uint64_t
+te_next_event_compute(tsd_t *tsd, bool is_alloc) {
+	uint64_t wait = TE_MAX_START_WAIT;
+#define E(event, condition, alloc_event)				\
+	if (is_alloc == alloc_event && condition) {			\
+		uint64_t event_wait =					\
+		    event##_event_wait_get(tsd);			\
+		assert(event_wait <= TE_MAX_START_WAIT);		\
+		if (event_wait > 0U && event_wait < wait) {		\
+			wait = event_wait;				\
+		}							\
+	}
+
+	ITERATE_OVER_ALL_EVENTS
+#undef E
+	assert(wait <= TE_MAX_START_WAIT);
+	return wait;
+}
+
+static void
+te_assert_invariants_impl(tsd_t *tsd, te_ctx_t *ctx) {
+	uint64_t current_bytes = te_ctx_current_bytes_get(ctx);
+	uint64_t last_event = te_ctx_last_event_get(ctx);
+	uint64_t next_event = te_ctx_next_event_get(ctx);
+	uint64_t next_event_fast = te_ctx_next_event_fast_get(ctx);
+
+	assert(last_event != next_event);
+	if (next_event > TE_NEXT_EVENT_FAST_MAX || !tsd_fast(tsd)) {
+		assert(next_event_fast == 0U);
+	} else {
+		assert(next_event_fast == next_event);
+	}
+
+	/* The subtraction is intentionally susceptible to underflow. */
+	uint64_t interval = next_event - last_event;
+
+	/* The subtraction is intentionally susceptible to underflow. */
+	assert(current_bytes - last_event < interval);
+	uint64_t min_wait = te_next_event_compute(tsd, te_ctx_is_alloc(ctx));
+	/*
+	 * next_event should have been pushed up only except when no event is
+	 * on and the TSD is just initialized.  The last_event == 0U guard
+	 * below is stronger than needed, but having an exactly accurate guard
+	 * is more complicated to implement.
+	 */
+	assert((!te_ctx_has_active_events(ctx) && last_event == 0U) ||
+	    interval == min_wait ||
+	    (interval < min_wait && interval == TE_MAX_INTERVAL));
+}
+
+void
+te_assert_invariants_debug(tsd_t *tsd) {
+	te_ctx_t ctx;
+	te_ctx_get(tsd, &ctx, true);
+	te_assert_invariants_impl(tsd, &ctx);
+
+	te_ctx_get(tsd, &ctx, false);
+	te_assert_invariants_impl(tsd, &ctx);
+}
+
+/*
+ * Synchronization around the fast threshold in tsd --
+ * There are two threads to consider in the synchronization here:
+ * - The owner of the tsd being updated by a slow path change
+ * - The remote thread, doing that slow path change.
+ *
+ * As a design constraint, we want to ensure that a slow-path transition cannot
+ * be ignored for arbitrarily long, and that if the remote thread causes a
+ * slow-path transition and then communicates with the owner thread that it has
+ * occurred, then the owner will go down the slow path on the next allocator
+ * operation (so that we don't want to just wait until the owner hits its slow
+ * path reset condition on its own).
+ *
+ * Here's our strategy to do that:
+ *
+ * The remote thread will update the slow-path stores to TSD variables, issue a
+ * SEQ_CST fence, and then update the TSD next_event_fast counter. The owner
+ * thread will update next_event_fast, issue an SEQ_CST fence, and then check
+ * its TSD to see if it's on the slow path.
+
+ * This is fairly straightforward when 64-bit atomics are supported. Assume that
+ * the remote fence is sandwiched between two owner fences in the reset pathway.
+ * The case where there is no preceding or trailing owner fence (i.e. because
+ * the owner thread is near the beginning or end of its life) can be analyzed
+ * similarly. The owner store to next_event_fast preceding the earlier owner
+ * fence will be earlier in coherence order than the remote store to it, so that
+ * the owner thread will go down the slow path once the store becomes visible to
+ * it, which is no later than the time of the second fence.
+
+ * The case where we don't support 64-bit atomics is trickier, since word
+ * tearing is possible. We'll repeat the same analysis, and look at the two
+ * owner fences sandwiching the remote fence. The next_event_fast stores done
+ * alongside the earlier owner fence cannot overwrite any of the remote stores
+ * (since they precede the earlier owner fence in sb, which precedes the remote
+ * fence in sc, which precedes the remote stores in sb). After the second owner
+ * fence there will be a re-check of the slow-path variables anyways, so the
+ * "owner will notice that it's on the slow path eventually" guarantee is
+ * satisfied. To make sure that the out-of-band-messaging constraint is as well,
+ * note that either the message passing is sequenced before the second owner
+ * fence (in which case the remote stores happen before the second set of owner
+ * stores, so malloc sees a value of zero for next_event_fast and goes down the
+ * slow path), or it is not (in which case the owner sees the tsd slow-path
+ * writes on its previous update). This leaves open the possibility that the
+ * remote thread will (at some arbitrary point in the future) zero out one half
+ * of the owner thread's next_event_fast, but that's always safe (it just sends
+ * it down the slow path earlier).
+ */
+static void
+te_ctx_next_event_fast_update(te_ctx_t *ctx) {
+	uint64_t next_event = te_ctx_next_event_get(ctx);
+	uint64_t next_event_fast = (next_event <= TE_NEXT_EVENT_FAST_MAX) ?
+	    next_event : 0U;
+	te_ctx_next_event_fast_set(ctx, next_event_fast);
+}
+
+void
+te_recompute_fast_threshold(tsd_t *tsd) {
+	if (tsd_state_get(tsd) != tsd_state_nominal) {
+		/* Check first because this is also called on purgatory. */
+		te_next_event_fast_set_non_nominal(tsd);
+		return;
+	}
+
+	te_ctx_t ctx;
+	te_ctx_get(tsd, &ctx, true);
+	te_ctx_next_event_fast_update(&ctx);
+	te_ctx_get(tsd, &ctx, false);
+	te_ctx_next_event_fast_update(&ctx);
+
+	atomic_fence(ATOMIC_SEQ_CST);
+	if (tsd_state_get(tsd) != tsd_state_nominal) {
+		te_next_event_fast_set_non_nominal(tsd);
+	}
+}
+
+static void
+te_adjust_thresholds_helper(tsd_t *tsd, te_ctx_t *ctx,
+    uint64_t wait) {
+	/*
+	 * The next threshold based on future events can only be adjusted after
+	 * progressing the last_event counter (which is set to current).
+	 */
+	assert(te_ctx_current_bytes_get(ctx) == te_ctx_last_event_get(ctx));
+	assert(wait <= TE_MAX_START_WAIT);
+
+	uint64_t next_event = te_ctx_last_event_get(ctx) + (wait <=
+	    TE_MAX_INTERVAL ? wait : TE_MAX_INTERVAL);
+	te_ctx_next_event_set(tsd, ctx, next_event);
+}
+
+static uint64_t
+te_clip_event_wait(uint64_t event_wait) {
+	assert(event_wait > 0U);
+	if (TE_MIN_START_WAIT > 1U &&
+	    unlikely(event_wait < TE_MIN_START_WAIT)) {
+		event_wait = TE_MIN_START_WAIT;
+	}
+	if (TE_MAX_START_WAIT < UINT64_MAX &&
+	    unlikely(event_wait > TE_MAX_START_WAIT)) {
+		event_wait = TE_MAX_START_WAIT;
+	}
+	return event_wait;
+}
+
+void
+te_event_trigger(tsd_t *tsd, te_ctx_t *ctx) {
+	/* usize has already been added to thread_allocated. */
+	uint64_t bytes_after = te_ctx_current_bytes_get(ctx);
+	/* The subtraction is intentionally susceptible to underflow. */
+	uint64_t accumbytes = bytes_after - te_ctx_last_event_get(ctx);
+
+	te_ctx_last_event_set(ctx, bytes_after);
+
+	bool allow_event_trigger = tsd_nominal(tsd) &&
+	    tsd_reentrancy_level_get(tsd) == 0;
+	bool is_alloc = ctx->is_alloc;
+	uint64_t wait = TE_MAX_START_WAIT;
+
+#define E(event, condition, alloc_event)				\
+	bool is_##event##_triggered = false;				\
+	if (is_alloc == alloc_event && condition) {			\
+		uint64_t event_wait = event##_event_wait_get(tsd);	\
+		assert(event_wait <= TE_MAX_START_WAIT);		\
+		if (event_wait > accumbytes) {				\
+			event_wait -= accumbytes;			\
+		} else if (!allow_event_trigger) {			\
+			event_wait = event##_postponed_event_wait(tsd);	\
+		} else {						\
+			is_##event##_triggered = true;			\
+			event_wait = event##_new_event_wait(tsd);	\
+		}							\
+		event_wait = te_clip_event_wait(event_wait);		\
+		event##_event_wait_set(tsd, event_wait);		\
+		if (event_wait < wait) {				\
+			wait = event_wait;				\
+		}							\
+	}
+
+	ITERATE_OVER_ALL_EVENTS
+#undef E
+
+	assert(wait <= TE_MAX_START_WAIT);
+	te_adjust_thresholds_helper(tsd, ctx, wait);
+	te_assert_invariants(tsd);
+
+#define E(event, condition, alloc_event)				\
+	if (is_alloc == alloc_event && condition &&			\
+	    is_##event##_triggered) {					\
+		assert(allow_event_trigger);				\
+		uint64_t elapsed = event##_fetch_elapsed(tsd);		\
+		event##_event_handler(tsd, elapsed);			\
+	}
+
+	ITERATE_OVER_ALL_EVENTS
+#undef E
+
+	te_assert_invariants(tsd);
+}
+
+static void
+te_init(tsd_t *tsd, bool is_alloc) {
+	te_ctx_t ctx;
+	te_ctx_get(tsd, &ctx, is_alloc);
+	/*
+	 * Reset the last event to current, which starts the events from a clean
+	 * state.  This is necessary when re-init the tsd event counters.
+	 *
+	 * The event counters maintain a relationship with the current bytes:
+	 * last_event <= current < next_event.  When a reinit happens (e.g.
+	 * reincarnated tsd), the last event needs progressing because all
+	 * events start fresh from the current bytes.
+	 */
+	te_ctx_last_event_set(&ctx, te_ctx_current_bytes_get(&ctx));
+
+	uint64_t wait = TE_MAX_START_WAIT;
+#define E(event, condition, alloc_event)				\
+	if (is_alloc == alloc_event && condition) {			\
+		uint64_t event_wait = event##_new_event_wait(tsd);	\
+		event_wait = te_clip_event_wait(event_wait);		\
+		event##_event_wait_set(tsd, event_wait);		\
+		if (event_wait < wait) {				\
+			wait = event_wait;				\
+		}							\
+	}
+
+	ITERATE_OVER_ALL_EVENTS
+#undef E
+	te_adjust_thresholds_helper(tsd, &ctx, wait);
+}
+
+void
+tsd_te_init(tsd_t *tsd) {
+	/* Make sure no overflow for the bytes accumulated on event_trigger. */
+	assert(TE_MAX_INTERVAL <= UINT64_MAX - SC_LARGE_MAXCLASS + 1);
+	te_init(tsd, true);
+	te_init(tsd, false);
+	te_assert_invariants(tsd);
+}
diff --git a/deps/jemalloc/src/ticker.c b/deps/jemalloc/src/ticker.c
new file mode 100644
index 0000000..790b5c2
--- /dev/null
+++ b/deps/jemalloc/src/ticker.c
@@ -0,0 +1,32 @@
+#include "jemalloc/internal/jemalloc_preamble.h"
+#include "jemalloc/internal/jemalloc_internal_includes.h"
+
+/*
+ * To avoid using floating point math down core paths (still necessary because
+ * versions of the glibc dynamic loader that did not preserve xmm registers are
+ * still somewhat common, requiring us to be compilable with -mno-sse), and also
+ * to avoid generally expensive library calls, we use a precomputed table of
+ * values.  We want to sample U uniformly on [0, 1], and then compute
+ * ceil(log(u)/log(1-1/nticks)).  We're mostly interested in the case where
+ * nticks is reasonably big, so 1/log(1-1/nticks) is well-approximated by
+ * -nticks.
+ *
+ * To compute log(u), we sample an integer in [1, 64] and divide, then just look
+ * up results in a table.  As a space-compression mechanism, we store these as
+ * uint8_t by dividing the range (255) by the highest-magnitude value the log
+ * can take on, and using that as a multiplier.  We then have to divide by that
+ * multiplier at the end of the computation.
+ *
+ * The values here are computed in src/ticker.py
+ */
+
+const uint8_t ticker_geom_table[1 << TICKER_GEOM_NBITS] = {
+	254, 211, 187, 169, 156, 144, 135, 127,
+	120, 113, 107, 102, 97, 93, 89, 85,
+	81, 77, 74, 71, 68, 65, 62, 60,
+	57, 55, 53, 50, 48, 46, 44, 42,
+	40, 39, 37, 35, 33, 32, 30, 29,
+	27, 26, 24, 23, 21, 20, 19, 18,
+	16, 15, 14, 13, 12, 10, 9, 8,
+	7, 6, 5, 4, 3, 2, 1, 0
+};
diff --git a/deps/jemalloc/src/ticker.py b/deps/jemalloc/src/ticker.py
new file mode 100755
index 0000000..3807740
--- /dev/null
+++ b/deps/jemalloc/src/ticker.py
@@ -0,0 +1,15 @@
+#!/usr/bin/env python3
+
+import math
+
+# Must match TICKER_GEOM_NBITS
+lg_table_size = 6
+table_size = 2**lg_table_size
+byte_max = 255
+mul = math.floor(-byte_max/math.log(1 / table_size))
+values = [round(-mul * math.log(i / table_size))
+	for i in range(1, table_size+1)]
+print("mul =", mul)
+print("values:")
+for i in range(table_size // 8):
+	print(", ".join((str(x) for x in values[i*8 : i*8 + 8])))
diff --git a/deps/jemalloc/src/tsd.c b/deps/jemalloc/src/tsd.c
new file mode 100644
index 0000000..e8e4f3a
--- /dev/null
+++ b/deps/jemalloc/src/tsd.c
@@ -0,0 +1,549 @@
+#include "jemalloc/internal/jemalloc_preamble.h"
+#include "jemalloc/internal/jemalloc_internal_includes.h"
+
+#include "jemalloc/internal/assert.h"
+#include "jemalloc/internal/san.h"
+#include "jemalloc/internal/mutex.h"
+#include "jemalloc/internal/rtree.h"
+
+/******************************************************************************/
+/* Data. */
+
+/* TSD_INITIALIZER triggers "-Wmissing-field-initializer" */
+JEMALLOC_DIAGNOSTIC_PUSH
+JEMALLOC_DIAGNOSTIC_IGNORE_MISSING_STRUCT_FIELD_INITIALIZERS
+
+#ifdef JEMALLOC_MALLOC_THREAD_CLEANUP
+JEMALLOC_TSD_TYPE_ATTR(tsd_t) tsd_tls = TSD_INITIALIZER;
+JEMALLOC_TSD_TYPE_ATTR(bool) JEMALLOC_TLS_MODEL tsd_initialized = false;
+bool tsd_booted = false;
+#elif (defined(JEMALLOC_TLS))
+JEMALLOC_TSD_TYPE_ATTR(tsd_t) tsd_tls = TSD_INITIALIZER;
+pthread_key_t tsd_tsd;
+bool tsd_booted = false;
+#elif (defined(_WIN32))
+DWORD tsd_tsd;
+tsd_wrapper_t tsd_boot_wrapper = {false, TSD_INITIALIZER};
+bool tsd_booted = false;
+#else
+
+/*
+ * This contains a mutex, but it's pretty convenient to allow the mutex code to
+ * have a dependency on tsd.  So we define the struct here, and only refer to it
+ * by pointer in the header.
+ */
+struct tsd_init_head_s {
+	ql_head(tsd_init_block_t) blocks;
+	malloc_mutex_t lock;
+};
+
+pthread_key_t tsd_tsd;
+tsd_init_head_t	tsd_init_head = {
+	ql_head_initializer(blocks),
+	MALLOC_MUTEX_INITIALIZER
+};
+
+tsd_wrapper_t tsd_boot_wrapper = {
+	false,
+	TSD_INITIALIZER
+};
+bool tsd_booted = false;
+#endif
+
+JEMALLOC_DIAGNOSTIC_POP
+
+/******************************************************************************/
+
+/* A list of all the tsds in the nominal state. */
+typedef ql_head(tsd_t) tsd_list_t;
+static tsd_list_t tsd_nominal_tsds = ql_head_initializer(tsd_nominal_tsds);
+static malloc_mutex_t tsd_nominal_tsds_lock;
+
+/* How many slow-path-enabling features are turned on. */
+static atomic_u32_t tsd_global_slow_count = ATOMIC_INIT(0);
+
+static bool
+tsd_in_nominal_list(tsd_t *tsd) {
+	tsd_t *tsd_list;
+	bool found = false;
+	/*
+	 * We don't know that tsd is nominal; it might not be safe to get data
+	 * out of it here.
+	 */
+	malloc_mutex_lock(TSDN_NULL, &tsd_nominal_tsds_lock);
+	ql_foreach(tsd_list, &tsd_nominal_tsds, TSD_MANGLE(tsd_link)) {
+		if (tsd == tsd_list) {
+			found = true;
+			break;
+		}
+	}
+	malloc_mutex_unlock(TSDN_NULL, &tsd_nominal_tsds_lock);
+	return found;
+}
+
+static void
+tsd_add_nominal(tsd_t *tsd) {
+	assert(!tsd_in_nominal_list(tsd));
+	assert(tsd_state_get(tsd) <= tsd_state_nominal_max);
+	ql_elm_new(tsd, TSD_MANGLE(tsd_link));
+	malloc_mutex_lock(tsd_tsdn(tsd), &tsd_nominal_tsds_lock);
+	ql_tail_insert(&tsd_nominal_tsds, tsd, TSD_MANGLE(tsd_link));
+	malloc_mutex_unlock(tsd_tsdn(tsd), &tsd_nominal_tsds_lock);
+}
+
+static void
+tsd_remove_nominal(tsd_t *tsd) {
+	assert(tsd_in_nominal_list(tsd));
+	assert(tsd_state_get(tsd) <= tsd_state_nominal_max);
+	malloc_mutex_lock(tsd_tsdn(tsd), &tsd_nominal_tsds_lock);
+	ql_remove(&tsd_nominal_tsds, tsd, TSD_MANGLE(tsd_link));
+	malloc_mutex_unlock(tsd_tsdn(tsd), &tsd_nominal_tsds_lock);
+}
+
+static void
+tsd_force_recompute(tsdn_t *tsdn) {
+	/*
+	 * The stores to tsd->state here need to synchronize with the exchange
+	 * in tsd_slow_update.
+	 */
+	atomic_fence(ATOMIC_RELEASE);
+	malloc_mutex_lock(tsdn, &tsd_nominal_tsds_lock);
+	tsd_t *remote_tsd;
+	ql_foreach(remote_tsd, &tsd_nominal_tsds, TSD_MANGLE(tsd_link)) {
+		assert(tsd_atomic_load(&remote_tsd->state, ATOMIC_RELAXED)
+		    <= tsd_state_nominal_max);
+		tsd_atomic_store(&remote_tsd->state,
+		    tsd_state_nominal_recompute, ATOMIC_RELAXED);
+		/* See comments in te_recompute_fast_threshold(). */
+		atomic_fence(ATOMIC_SEQ_CST);
+		te_next_event_fast_set_non_nominal(remote_tsd);
+	}
+	malloc_mutex_unlock(tsdn, &tsd_nominal_tsds_lock);
+}
+
+void
+tsd_global_slow_inc(tsdn_t *tsdn) {
+	atomic_fetch_add_u32(&tsd_global_slow_count, 1, ATOMIC_RELAXED);
+	/*
+	 * We unconditionally force a recompute, even if the global slow count
+	 * was already positive.  If we didn't, then it would be possible for us
+	 * to return to the user, have the user synchronize externally with some
+	 * other thread, and then have that other thread not have picked up the
+	 * update yet (since the original incrementing thread might still be
+	 * making its way through the tsd list).
+	 */
+	tsd_force_recompute(tsdn);
+}
+
+void tsd_global_slow_dec(tsdn_t *tsdn) {
+	atomic_fetch_sub_u32(&tsd_global_slow_count, 1, ATOMIC_RELAXED);
+	/* See the note in ..._inc(). */
+	tsd_force_recompute(tsdn);
+}
+
+static bool
+tsd_local_slow(tsd_t *tsd) {
+	return !tsd_tcache_enabled_get(tsd)
+	    || tsd_reentrancy_level_get(tsd) > 0;
+}
+
+bool
+tsd_global_slow() {
+	return atomic_load_u32(&tsd_global_slow_count, ATOMIC_RELAXED) > 0;
+}
+
+/******************************************************************************/
+
+static uint8_t
+tsd_state_compute(tsd_t *tsd) {
+	if (!tsd_nominal(tsd)) {
+		return tsd_state_get(tsd);
+	}
+	/* We're in *a* nominal state; but which one? */
+	if (malloc_slow || tsd_local_slow(tsd) || tsd_global_slow()) {
+		return tsd_state_nominal_slow;
+	} else {
+		return tsd_state_nominal;
+	}
+}
+
+void
+tsd_slow_update(tsd_t *tsd) {
+	uint8_t old_state;
+	do {
+		uint8_t new_state = tsd_state_compute(tsd);
+		old_state = tsd_atomic_exchange(&tsd->state, new_state,
+		    ATOMIC_ACQUIRE);
+	} while (old_state == tsd_state_nominal_recompute);
+
+	te_recompute_fast_threshold(tsd);
+}
+
+void
+tsd_state_set(tsd_t *tsd, uint8_t new_state) {
+	/* Only the tsd module can change the state *to* recompute. */
+	assert(new_state != tsd_state_nominal_recompute);
+	uint8_t old_state = tsd_atomic_load(&tsd->state, ATOMIC_RELAXED);
+	if (old_state > tsd_state_nominal_max) {
+		/*
+		 * Not currently in the nominal list, but it might need to be
+		 * inserted there.
+		 */
+		assert(!tsd_in_nominal_list(tsd));
+		tsd_atomic_store(&tsd->state, new_state, ATOMIC_RELAXED);
+		if (new_state <= tsd_state_nominal_max) {
+			tsd_add_nominal(tsd);
+		}
+	} else {
+		/*
+		 * We're currently nominal.  If the new state is non-nominal,
+		 * great; we take ourselves off the list and just enter the new
+		 * state.
+		 */
+		assert(tsd_in_nominal_list(tsd));
+		if (new_state > tsd_state_nominal_max) {
+			tsd_remove_nominal(tsd);
+			tsd_atomic_store(&tsd->state, new_state,
+			    ATOMIC_RELAXED);
+		} else {
+			/*
+			 * This is the tricky case.  We're transitioning from
+			 * one nominal state to another.  The caller can't know
+			 * about any races that are occurring at the same time,
+			 * so we always have to recompute no matter what.
+			 */
+			tsd_slow_update(tsd);
+		}
+	}
+	te_recompute_fast_threshold(tsd);
+}
+
+static void
+tsd_prng_state_init(tsd_t *tsd) {
+	/*
+	 * A nondeterministic seed based on the address of tsd reduces
+	 * the likelihood of lockstep non-uniform cache index
+	 * utilization among identical concurrent processes, but at the
+	 * cost of test repeatability.  For debug builds, instead use a
+	 * deterministic seed.
+	 */
+	*tsd_prng_statep_get(tsd) = config_debug ? 0 :
+	    (uint64_t)(uintptr_t)tsd;
+}
+
+static bool
+tsd_data_init(tsd_t *tsd) {
+	/*
+	 * We initialize the rtree context first (before the tcache), since the
+	 * tcache initialization depends on it.
+	 */
+	rtree_ctx_data_init(tsd_rtree_ctxp_get_unsafe(tsd));
+	tsd_prng_state_init(tsd);
+	tsd_te_init(tsd); /* event_init may use the prng state above. */
+	tsd_san_init(tsd);
+	return tsd_tcache_enabled_data_init(tsd);
+}
+
+static void
+assert_tsd_data_cleanup_done(tsd_t *tsd) {
+	assert(!tsd_nominal(tsd));
+	assert(!tsd_in_nominal_list(tsd));
+	assert(*tsd_arenap_get_unsafe(tsd) == NULL);
+	assert(*tsd_iarenap_get_unsafe(tsd) == NULL);
+	assert(*tsd_tcache_enabledp_get_unsafe(tsd) == false);
+	assert(*tsd_prof_tdatap_get_unsafe(tsd) == NULL);
+}
+
+static bool
+tsd_data_init_nocleanup(tsd_t *tsd) {
+	assert(tsd_state_get(tsd) == tsd_state_reincarnated ||
+	    tsd_state_get(tsd) == tsd_state_minimal_initialized);
+	/*
+	 * During reincarnation, there is no guarantee that the cleanup function
+	 * will be called (deallocation may happen after all tsd destructors).
+	 * We set up tsd in a way that no cleanup is needed.
+	 */
+	rtree_ctx_data_init(tsd_rtree_ctxp_get_unsafe(tsd));
+	*tsd_tcache_enabledp_get_unsafe(tsd) = false;
+	*tsd_reentrancy_levelp_get(tsd) = 1;
+	tsd_prng_state_init(tsd);
+	tsd_te_init(tsd); /* event_init may use the prng state above. */
+	tsd_san_init(tsd);
+	assert_tsd_data_cleanup_done(tsd);
+
+	return false;
+}
+
+tsd_t *
+tsd_fetch_slow(tsd_t *tsd, bool minimal) {
+	assert(!tsd_fast(tsd));
+
+	if (tsd_state_get(tsd) == tsd_state_nominal_slow) {
+		/*
+		 * On slow path but no work needed.  Note that we can't
+		 * necessarily *assert* that we're slow, because we might be
+		 * slow because of an asynchronous modification to global state,
+		 * which might be asynchronously modified *back*.
+		 */
+	} else if (tsd_state_get(tsd) == tsd_state_nominal_recompute) {
+		tsd_slow_update(tsd);
+	} else if (tsd_state_get(tsd) == tsd_state_uninitialized) {
+		if (!minimal) {
+			if (tsd_booted) {
+				tsd_state_set(tsd, tsd_state_nominal);
+				tsd_slow_update(tsd);
+				/* Trigger cleanup handler registration. */
+				tsd_set(tsd);
+				tsd_data_init(tsd);
+			}
+		} else {
+			tsd_state_set(tsd, tsd_state_minimal_initialized);
+			tsd_set(tsd);
+			tsd_data_init_nocleanup(tsd);
+		}
+	} else if (tsd_state_get(tsd) == tsd_state_minimal_initialized) {
+		if (!minimal) {
+			/* Switch to fully initialized. */
+			tsd_state_set(tsd, tsd_state_nominal);
+			assert(*tsd_reentrancy_levelp_get(tsd) >= 1);
+			(*tsd_reentrancy_levelp_get(tsd))--;
+			tsd_slow_update(tsd);
+			tsd_data_init(tsd);
+		} else {
+			assert_tsd_data_cleanup_done(tsd);
+		}
+	} else if (tsd_state_get(tsd) == tsd_state_purgatory) {
+		tsd_state_set(tsd, tsd_state_reincarnated);
+		tsd_set(tsd);
+		tsd_data_init_nocleanup(tsd);
+	} else {
+		assert(tsd_state_get(tsd) == tsd_state_reincarnated);
+	}
+
+	return tsd;
+}
+
+void *
+malloc_tsd_malloc(size_t size) {
+	return a0malloc(CACHELINE_CEILING(size));
+}
+
+void
+malloc_tsd_dalloc(void *wrapper) {
+	a0dalloc(wrapper);
+}
+
+#if defined(JEMALLOC_MALLOC_THREAD_CLEANUP) || defined(_WIN32)
+static unsigned ncleanups;
+static malloc_tsd_cleanup_t cleanups[MALLOC_TSD_CLEANUPS_MAX];
+
+#ifndef _WIN32
+JEMALLOC_EXPORT
+#endif
+void
+_malloc_thread_cleanup(void) {
+	bool pending[MALLOC_TSD_CLEANUPS_MAX], again;
+	unsigned i;
+
+	for (i = 0; i < ncleanups; i++) {
+		pending[i] = true;
+	}
+
+	do {
+		again = false;
+		for (i = 0; i < ncleanups; i++) {
+			if (pending[i]) {
+				pending[i] = cleanups[i]();
+				if (pending[i]) {
+					again = true;
+				}
+			}
+		}
+	} while (again);
+}
+
+#ifndef _WIN32
+JEMALLOC_EXPORT
+#endif
+void
+_malloc_tsd_cleanup_register(bool (*f)(void)) {
+	assert(ncleanups < MALLOC_TSD_CLEANUPS_MAX);
+	cleanups[ncleanups] = f;
+	ncleanups++;
+}
+
+#endif
+
+static void
+tsd_do_data_cleanup(tsd_t *tsd) {
+	prof_tdata_cleanup(tsd);
+	iarena_cleanup(tsd);
+	arena_cleanup(tsd);
+	tcache_cleanup(tsd);
+	witnesses_cleanup(tsd_witness_tsdp_get_unsafe(tsd));
+	*tsd_reentrancy_levelp_get(tsd) = 1;
+}
+
+void
+tsd_cleanup(void *arg) {
+	tsd_t *tsd = (tsd_t *)arg;
+
+	switch (tsd_state_get(tsd)) {
+	case tsd_state_uninitialized:
+		/* Do nothing. */
+		break;
+	case tsd_state_minimal_initialized:
+		/* This implies the thread only did free() in its life time. */
+		/* Fall through. */
+	case tsd_state_reincarnated:
+		/*
+		 * Reincarnated means another destructor deallocated memory
+		 * after the destructor was called.  Cleanup isn't required but
+		 * is still called for testing and completeness.
+		 */
+		assert_tsd_data_cleanup_done(tsd);
+		JEMALLOC_FALLTHROUGH;
+	case tsd_state_nominal:
+	case tsd_state_nominal_slow:
+		tsd_do_data_cleanup(tsd);
+		tsd_state_set(tsd, tsd_state_purgatory);
+		tsd_set(tsd);
+		break;
+	case tsd_state_purgatory:
+		/*
+		 * The previous time this destructor was called, we set the
+		 * state to tsd_state_purgatory so that other destructors
+		 * wouldn't cause re-creation of the tsd.  This time, do
+		 * nothing, and do not request another callback.
+		 */
+		break;
+	default:
+		not_reached();
+	}
+#ifdef JEMALLOC_JET
+	test_callback_t test_callback = *tsd_test_callbackp_get_unsafe(tsd);
+	int *data = tsd_test_datap_get_unsafe(tsd);
+	if (test_callback != NULL) {
+		test_callback(data);
+	}
+#endif
+}
+
+tsd_t *
+malloc_tsd_boot0(void) {
+	tsd_t *tsd;
+
+#if defined(JEMALLOC_MALLOC_THREAD_CLEANUP) || defined(_WIN32)
+	ncleanups = 0;
+#endif
+	if (malloc_mutex_init(&tsd_nominal_tsds_lock, "tsd_nominal_tsds_lock",
+	    WITNESS_RANK_OMIT, malloc_mutex_rank_exclusive)) {
+		return NULL;
+	}
+	if (tsd_boot0()) {
+		return NULL;
+	}
+	tsd = tsd_fetch();
+	return tsd;
+}
+
+void
+malloc_tsd_boot1(void) {
+	tsd_boot1();
+	tsd_t *tsd = tsd_fetch();
+	/* malloc_slow has been set properly.  Update tsd_slow. */
+	tsd_slow_update(tsd);
+}
+
+#ifdef _WIN32
+static BOOL WINAPI
+_tls_callback(HINSTANCE hinstDLL, DWORD fdwReason, LPVOID lpvReserved) {
+	switch (fdwReason) {
+#ifdef JEMALLOC_LAZY_LOCK
+	case DLL_THREAD_ATTACH:
+		isthreaded = true;
+		break;
+#endif
+	case DLL_THREAD_DETACH:
+		_malloc_thread_cleanup();
+		break;
+	default:
+		break;
+	}
+	return true;
+}
+
+/*
+ * We need to be able to say "read" here (in the "pragma section"), but have
+ * hooked "read". We won't read for the rest of the file, so we can get away
+ * with unhooking.
+ */
+#ifdef read
+#  undef read
+#endif
+
+#ifdef _MSC_VER
+#  ifdef _M_IX86
+#    pragma comment(linker, "/INCLUDE:__tls_used")
+#    pragma comment(linker, "/INCLUDE:_tls_callback")
+#  else
+#    pragma comment(linker, "/INCLUDE:_tls_used")
+#    pragma comment(linker, "/INCLUDE:" STRINGIFY(tls_callback) )
+#  endif
+#  pragma section(".CRT$XLY",long,read)
+#endif
+JEMALLOC_SECTION(".CRT$XLY") JEMALLOC_ATTR(used)
+BOOL	(WINAPI *const tls_callback)(HINSTANCE hinstDLL,
+    DWORD fdwReason, LPVOID lpvReserved) = _tls_callback;
+#endif
+
+#if (!defined(JEMALLOC_MALLOC_THREAD_CLEANUP) && !defined(JEMALLOC_TLS) && \
+    !defined(_WIN32))
+void *
+tsd_init_check_recursion(tsd_init_head_t *head, tsd_init_block_t *block) {
+	pthread_t self = pthread_self();
+	tsd_init_block_t *iter;
+
+	/* Check whether this thread has already inserted into the list. */
+	malloc_mutex_lock(TSDN_NULL, &head->lock);
+	ql_foreach(iter, &head->blocks, link) {
+		if (iter->thread == self) {
+			malloc_mutex_unlock(TSDN_NULL, &head->lock);
+			return iter->data;
+		}
+	}
+	/* Insert block into list. */
+	ql_elm_new(block, link);
+	block->thread = self;
+	ql_tail_insert(&head->blocks, block, link);
+	malloc_mutex_unlock(TSDN_NULL, &head->lock);
+	return NULL;
+}
+
+void
+tsd_init_finish(tsd_init_head_t *head, tsd_init_block_t *block) {
+	malloc_mutex_lock(TSDN_NULL, &head->lock);
+	ql_remove(&head->blocks, block, link);
+	malloc_mutex_unlock(TSDN_NULL, &head->lock);
+}
+#endif
+
+void
+tsd_prefork(tsd_t *tsd) {
+	malloc_mutex_prefork(tsd_tsdn(tsd), &tsd_nominal_tsds_lock);
+}
+
+void
+tsd_postfork_parent(tsd_t *tsd) {
+	malloc_mutex_postfork_parent(tsd_tsdn(tsd), &tsd_nominal_tsds_lock);
+}
+
+void
+tsd_postfork_child(tsd_t *tsd) {
+	malloc_mutex_postfork_child(tsd_tsdn(tsd), &tsd_nominal_tsds_lock);
+	ql_new(&tsd_nominal_tsds);
+
+	if (tsd_state_get(tsd) <= tsd_state_nominal_max) {
+		tsd_add_nominal(tsd);
+	}
+}
diff --git a/deps/jemalloc/src/witness.c b/deps/jemalloc/src/witness.c
new file mode 100644
index 0000000..4474af0
--- /dev/null
+++ b/deps/jemalloc/src/witness.c
@@ -0,0 +1,122 @@
+#include "jemalloc/internal/jemalloc_preamble.h"
+#include "jemalloc/internal/jemalloc_internal_includes.h"
+
+#include "jemalloc/internal/assert.h"
+#include "jemalloc/internal/malloc_io.h"
+
+void
+witness_init(witness_t *witness, const char *name, witness_rank_t rank,
+    witness_comp_t *comp, void *opaque) {
+	witness->name = name;
+	witness->rank = rank;
+	witness->comp = comp;
+	witness->opaque = opaque;
+}
+
+static void
+witness_print_witness(witness_t *w, unsigned n) {
+	assert(n > 0);
+	if (n == 1) {
+		malloc_printf(" %s(%u)", w->name, w->rank);
+	} else {
+		malloc_printf(" %s(%u)X%u", w->name, w->rank, n);
+	}
+}
+
+static void
+witness_print_witnesses(const witness_list_t *witnesses) {
+	witness_t *w, *last = NULL;
+	unsigned n = 0;
+	ql_foreach(w, witnesses, link) {
+		if (last != NULL && w->rank > last->rank) {
+			assert(w->name != last->name);
+			witness_print_witness(last, n);
+			n = 0;
+		} else if (last != NULL) {
+			assert(w->rank == last->rank);
+			assert(w->name == last->name);
+		}
+		last = w;
+		++n;
+	}
+	if (last != NULL) {
+		witness_print_witness(last, n);
+	}
+}
+
+static void
+witness_lock_error_impl(const witness_list_t *witnesses,
+    const witness_t *witness) {
+	malloc_printf("<jemalloc>: Lock rank order reversal:");
+	witness_print_witnesses(witnesses);
+	malloc_printf(" %s(%u)\n", witness->name, witness->rank);
+	abort();
+}
+witness_lock_error_t *JET_MUTABLE witness_lock_error = witness_lock_error_impl;
+
+static void
+witness_owner_error_impl(const witness_t *witness) {
+	malloc_printf("<jemalloc>: Should own %s(%u)\n", witness->name,
+	    witness->rank);
+	abort();
+}
+witness_owner_error_t *JET_MUTABLE witness_owner_error =
+    witness_owner_error_impl;
+
+static void
+witness_not_owner_error_impl(const witness_t *witness) {
+	malloc_printf("<jemalloc>: Should not own %s(%u)\n", witness->name,
+	    witness->rank);
+	abort();
+}
+witness_not_owner_error_t *JET_MUTABLE witness_not_owner_error =
+    witness_not_owner_error_impl;
+
+static void
+witness_depth_error_impl(const witness_list_t *witnesses,
+    witness_rank_t rank_inclusive, unsigned depth) {
+	malloc_printf("<jemalloc>: Should own %u lock%s of rank >= %u:", depth,
+	    (depth != 1) ?  "s" : "", rank_inclusive);
+	witness_print_witnesses(witnesses);
+	malloc_printf("\n");
+	abort();
+}
+witness_depth_error_t *JET_MUTABLE witness_depth_error =
+    witness_depth_error_impl;
+
+void
+witnesses_cleanup(witness_tsd_t *witness_tsd) {
+	witness_assert_lockless(witness_tsd_tsdn(witness_tsd));
+
+	/* Do nothing. */
+}
+
+void
+witness_prefork(witness_tsd_t *witness_tsd) {
+	if (!config_debug) {
+		return;
+	}
+	witness_tsd->forking = true;
+}
+
+void
+witness_postfork_parent(witness_tsd_t *witness_tsd) {
+	if (!config_debug) {
+		return;
+	}
+	witness_tsd->forking = false;
+}
+
+void
+witness_postfork_child(witness_tsd_t *witness_tsd) {
+	if (!config_debug) {
+		return;
+	}
+#ifndef JEMALLOC_MUTEX_INIT_CB
+	witness_list_t *witnesses;
+
+	witnesses = &witness_tsd->witnesses;
+	ql_new(witnesses);
+#endif
+	witness_tsd->forking = false;
+}
diff --git a/deps/jemalloc/src/zone.c b/deps/jemalloc/src/zone.c
new file mode 100644
index 0000000..23dfdd0
--- /dev/null
+++ b/deps/jemalloc/src/zone.c
@@ -0,0 +1,469 @@
+#include "jemalloc/internal/jemalloc_preamble.h"
+#include "jemalloc/internal/jemalloc_internal_includes.h"
+
+#include "jemalloc/internal/assert.h"
+
+#ifndef JEMALLOC_ZONE
+#  error "This source file is for zones on Darwin (OS X)."
+#endif
+
+/* Definitions of the following structs in malloc/malloc.h might be too old
+ * for the built binary to run on newer versions of OSX. So use the newest
+ * possible version of those structs.
+ */
+typedef struct _malloc_zone_t {
+	void *reserved1;
+	void *reserved2;
+	size_t (*size)(struct _malloc_zone_t *, const void *);
+	void *(*malloc)(struct _malloc_zone_t *, size_t);
+	void *(*calloc)(struct _malloc_zone_t *, size_t, size_t);
+	void *(*valloc)(struct _malloc_zone_t *, size_t);
+	void (*free)(struct _malloc_zone_t *, void *);
+	void *(*realloc)(struct _malloc_zone_t *, void *, size_t);
+	void (*destroy)(struct _malloc_zone_t *);
+	const char *zone_name;
+	unsigned (*batch_malloc)(struct _malloc_zone_t *, size_t, void **, unsigned);
+	void (*batch_free)(struct _malloc_zone_t *, void **, unsigned);
+	struct malloc_introspection_t *introspect;
+	unsigned version;
+	void *(*memalign)(struct _malloc_zone_t *, size_t, size_t);
+	void (*free_definite_size)(struct _malloc_zone_t *, void *, size_t);
+	size_t (*pressure_relief)(struct _malloc_zone_t *, size_t);
+} malloc_zone_t;
+
+typedef struct {
+	vm_address_t address;
+	vm_size_t size;
+} vm_range_t;
+
+typedef struct malloc_statistics_t {
+	unsigned blocks_in_use;
+	size_t size_in_use;
+	size_t max_size_in_use;
+	size_t size_allocated;
+} malloc_statistics_t;
+
+typedef kern_return_t memory_reader_t(task_t, vm_address_t, vm_size_t, void **);
+
+typedef void vm_range_recorder_t(task_t, void *, unsigned type, vm_range_t *, unsigned);
+
+typedef struct malloc_introspection_t {
+	kern_return_t (*enumerator)(task_t, void *, unsigned, vm_address_t, memory_reader_t, vm_range_recorder_t);
+	size_t (*good_size)(malloc_zone_t *, size_t);
+	boolean_t (*check)(malloc_zone_t *);
+	void (*print)(malloc_zone_t *, boolean_t);
+	void (*log)(malloc_zone_t *, void *);
+	void (*force_lock)(malloc_zone_t *);
+	void (*force_unlock)(malloc_zone_t *);
+	void (*statistics)(malloc_zone_t *, malloc_statistics_t *);
+	boolean_t (*zone_locked)(malloc_zone_t *);
+	boolean_t (*enable_discharge_checking)(malloc_zone_t *);
+	boolean_t (*disable_discharge_checking)(malloc_zone_t *);
+	void (*discharge)(malloc_zone_t *, void *);
+#ifdef __BLOCKS__
+	void (*enumerate_discharged_pointers)(malloc_zone_t *, void (^)(void *, void *));
+#else
+	void *enumerate_unavailable_without_blocks;
+#endif
+	void (*reinit_lock)(malloc_zone_t *);
+} malloc_introspection_t;
+
+extern kern_return_t malloc_get_all_zones(task_t, memory_reader_t, vm_address_t **, unsigned *);
+
+extern malloc_zone_t *malloc_default_zone(void);
+
+extern void malloc_zone_register(malloc_zone_t *zone);
+
+extern void malloc_zone_unregister(malloc_zone_t *zone);
+
+/*
+ * The malloc_default_purgeable_zone() function is only available on >= 10.6.
+ * We need to check whether it is present at runtime, thus the weak_import.
+ */
+extern malloc_zone_t *malloc_default_purgeable_zone(void)
+JEMALLOC_ATTR(weak_import);
+
+/******************************************************************************/
+/* Data. */
+
+static malloc_zone_t *default_zone, *purgeable_zone;
+static malloc_zone_t jemalloc_zone;
+static struct malloc_introspection_t jemalloc_zone_introspect;
+static pid_t zone_force_lock_pid = -1;
+
+/******************************************************************************/
+/* Function prototypes for non-inline static functions. */
+
+static size_t	zone_size(malloc_zone_t *zone, const void *ptr);
+static void	*zone_malloc(malloc_zone_t *zone, size_t size);
+static void	*zone_calloc(malloc_zone_t *zone, size_t num, size_t size);
+static void	*zone_valloc(malloc_zone_t *zone, size_t size);
+static void	zone_free(malloc_zone_t *zone, void *ptr);
+static void	*zone_realloc(malloc_zone_t *zone, void *ptr, size_t size);
+static void	*zone_memalign(malloc_zone_t *zone, size_t alignment,
+    size_t size);
+static void	zone_free_definite_size(malloc_zone_t *zone, void *ptr,
+    size_t size);
+static void	zone_destroy(malloc_zone_t *zone);
+static unsigned	zone_batch_malloc(struct _malloc_zone_t *zone, size_t size,
+    void **results, unsigned num_requested);
+static void	zone_batch_free(struct _malloc_zone_t *zone,
+    void **to_be_freed, unsigned num_to_be_freed);
+static size_t	zone_pressure_relief(struct _malloc_zone_t *zone, size_t goal);
+static size_t	zone_good_size(malloc_zone_t *zone, size_t size);
+static kern_return_t	zone_enumerator(task_t task, void *data, unsigned type_mask,
+    vm_address_t zone_address, memory_reader_t reader,
+    vm_range_recorder_t recorder);
+static boolean_t	zone_check(malloc_zone_t *zone);
+static void	zone_print(malloc_zone_t *zone, boolean_t verbose);
+static void	zone_log(malloc_zone_t *zone, void *address);
+static void	zone_force_lock(malloc_zone_t *zone);
+static void	zone_force_unlock(malloc_zone_t *zone);
+static void	zone_statistics(malloc_zone_t *zone,
+    malloc_statistics_t *stats);
+static boolean_t	zone_locked(malloc_zone_t *zone);
+static void	zone_reinit_lock(malloc_zone_t *zone);
+
+/******************************************************************************/
+/*
+ * Functions.
+ */
+
+static size_t
+zone_size(malloc_zone_t *zone, const void *ptr) {
+	/*
+	 * There appear to be places within Darwin (such as setenv(3)) that
+	 * cause calls to this function with pointers that *no* zone owns.  If
+	 * we knew that all pointers were owned by *some* zone, we could split
+	 * our zone into two parts, and use one as the default allocator and
+	 * the other as the default deallocator/reallocator.  Since that will
+	 * not work in practice, we must check all pointers to assure that they
+	 * reside within a mapped extent before determining size.
+	 */
+	return ivsalloc(tsdn_fetch(), ptr);
+}
+
+static void *
+zone_malloc(malloc_zone_t *zone, size_t size) {
+	return je_malloc(size);
+}
+
+static void *
+zone_calloc(malloc_zone_t *zone, size_t num, size_t size) {
+	return je_calloc(num, size);
+}
+
+static void *
+zone_valloc(malloc_zone_t *zone, size_t size) {
+	void *ret = NULL; /* Assignment avoids useless compiler warning. */
+
+	je_posix_memalign(&ret, PAGE, size);
+
+	return ret;
+}
+
+static void
+zone_free(malloc_zone_t *zone, void *ptr) {
+	if (ivsalloc(tsdn_fetch(), ptr) != 0) {
+		je_free(ptr);
+		return;
+	}
+
+	free(ptr);
+}
+
+static void *
+zone_realloc(malloc_zone_t *zone, void *ptr, size_t size) {
+	if (ivsalloc(tsdn_fetch(), ptr) != 0) {
+		return je_realloc(ptr, size);
+	}
+
+	return realloc(ptr, size);
+}
+
+static void *
+zone_memalign(malloc_zone_t *zone, size_t alignment, size_t size) {
+	void *ret = NULL; /* Assignment avoids useless compiler warning. */
+
+	je_posix_memalign(&ret, alignment, size);
+
+	return ret;
+}
+
+static void
+zone_free_definite_size(malloc_zone_t *zone, void *ptr, size_t size) {
+	size_t alloc_size;
+
+	alloc_size = ivsalloc(tsdn_fetch(), ptr);
+	if (alloc_size != 0) {
+		assert(alloc_size == size);
+		je_free(ptr);
+		return;
+	}
+
+	free(ptr);
+}
+
+static void
+zone_destroy(malloc_zone_t *zone) {
+	/* This function should never be called. */
+	not_reached();
+}
+
+static unsigned
+zone_batch_malloc(struct _malloc_zone_t *zone, size_t size, void **results,
+    unsigned num_requested) {
+	unsigned i;
+
+	for (i = 0; i < num_requested; i++) {
+		results[i] = je_malloc(size);
+		if (!results[i])
+			break;
+	}
+
+	return i;
+}
+
+static void
+zone_batch_free(struct _malloc_zone_t *zone, void **to_be_freed,
+    unsigned num_to_be_freed) {
+	unsigned i;
+
+	for (i = 0; i < num_to_be_freed; i++) {
+		zone_free(zone, to_be_freed[i]);
+		to_be_freed[i] = NULL;
+	}
+}
+
+static size_t
+zone_pressure_relief(struct _malloc_zone_t *zone, size_t goal) {
+	return 0;
+}
+
+static size_t
+zone_good_size(malloc_zone_t *zone, size_t size) {
+	if (size == 0) {
+		size = 1;
+	}
+	return sz_s2u(size);
+}
+
+static kern_return_t
+zone_enumerator(task_t task, void *data, unsigned type_mask,
+    vm_address_t zone_address, memory_reader_t reader,
+    vm_range_recorder_t recorder) {
+	return KERN_SUCCESS;
+}
+
+static boolean_t
+zone_check(malloc_zone_t *zone) {
+	return true;
+}
+
+static void
+zone_print(malloc_zone_t *zone, boolean_t verbose) {
+}
+
+static void
+zone_log(malloc_zone_t *zone, void *address) {
+}
+
+static void
+zone_force_lock(malloc_zone_t *zone) {
+	if (isthreaded) {
+		/*
+		 * See the note in zone_force_unlock, below, to see why we need
+		 * this.
+		 */
+		assert(zone_force_lock_pid == -1);
+		zone_force_lock_pid = getpid();
+		jemalloc_prefork();
+	}
+}
+
+static void
+zone_force_unlock(malloc_zone_t *zone) {
+	/*
+	 * zone_force_lock and zone_force_unlock are the entry points to the
+	 * forking machinery on OS X.  The tricky thing is, the child is not
+	 * allowed to unlock mutexes locked in the parent, even if owned by the
+	 * forking thread (and the mutex type we use in OS X will fail an assert
+	 * if we try).  In the child, we can get away with reinitializing all
+	 * the mutexes, which has the effect of unlocking them.  In the parent,
+	 * doing this would mean we wouldn't wake any waiters blocked on the
+	 * mutexes we unlock.  So, we record the pid of the current thread in
+	 * zone_force_lock, and use that to detect if we're in the parent or
+	 * child here, to decide which unlock logic we need.
+	 */
+	if (isthreaded) {
+		assert(zone_force_lock_pid != -1);
+		if (getpid() == zone_force_lock_pid) {
+			jemalloc_postfork_parent();
+		} else {
+			jemalloc_postfork_child();
+		}
+		zone_force_lock_pid = -1;
+	}
+}
+
+static void
+zone_statistics(malloc_zone_t *zone, malloc_statistics_t *stats) {
+	/* We make no effort to actually fill the values */
+	stats->blocks_in_use = 0;
+	stats->size_in_use = 0;
+	stats->max_size_in_use = 0;
+	stats->size_allocated = 0;
+}
+
+static boolean_t
+zone_locked(malloc_zone_t *zone) {
+	/* Pretend no lock is being held */
+	return false;
+}
+
+static void
+zone_reinit_lock(malloc_zone_t *zone) {
+	/* As of OSX 10.12, this function is only used when force_unlock would
+	 * be used if the zone version were < 9. So just use force_unlock. */
+	zone_force_unlock(zone);
+}
+
+static void
+zone_init(void) {
+	jemalloc_zone.size = zone_size;
+	jemalloc_zone.malloc = zone_malloc;
+	jemalloc_zone.calloc = zone_calloc;
+	jemalloc_zone.valloc = zone_valloc;
+	jemalloc_zone.free = zone_free;
+	jemalloc_zone.realloc = zone_realloc;
+	jemalloc_zone.destroy = zone_destroy;
+	jemalloc_zone.zone_name = "jemalloc_zone";
+	jemalloc_zone.batch_malloc = zone_batch_malloc;
+	jemalloc_zone.batch_free = zone_batch_free;
+	jemalloc_zone.introspect = &jemalloc_zone_introspect;
+	jemalloc_zone.version = 9;
+	jemalloc_zone.memalign = zone_memalign;
+	jemalloc_zone.free_definite_size = zone_free_definite_size;
+	jemalloc_zone.pressure_relief = zone_pressure_relief;
+
+	jemalloc_zone_introspect.enumerator = zone_enumerator;
+	jemalloc_zone_introspect.good_size = zone_good_size;
+	jemalloc_zone_introspect.check = zone_check;
+	jemalloc_zone_introspect.print = zone_print;
+	jemalloc_zone_introspect.log = zone_log;
+	jemalloc_zone_introspect.force_lock = zone_force_lock;
+	jemalloc_zone_introspect.force_unlock = zone_force_unlock;
+	jemalloc_zone_introspect.statistics = zone_statistics;
+	jemalloc_zone_introspect.zone_locked = zone_locked;
+	jemalloc_zone_introspect.enable_discharge_checking = NULL;
+	jemalloc_zone_introspect.disable_discharge_checking = NULL;
+	jemalloc_zone_introspect.discharge = NULL;
+#ifdef __BLOCKS__
+	jemalloc_zone_introspect.enumerate_discharged_pointers = NULL;
+#else
+	jemalloc_zone_introspect.enumerate_unavailable_without_blocks = NULL;
+#endif
+	jemalloc_zone_introspect.reinit_lock = zone_reinit_lock;
+}
+
+static malloc_zone_t *
+zone_default_get(void) {
+	malloc_zone_t **zones = NULL;
+	unsigned int num_zones = 0;
+
+	/*
+	 * On OSX 10.12, malloc_default_zone returns a special zone that is not
+	 * present in the list of registered zones. That zone uses a "lite zone"
+	 * if one is present (apparently enabled when malloc stack logging is
+	 * enabled), or the first registered zone otherwise. In practice this
+	 * means unless malloc stack logging is enabled, the first registered
+	 * zone is the default.  So get the list of zones to get the first one,
+	 * instead of relying on malloc_default_zone.
+	 */
+	if (KERN_SUCCESS != malloc_get_all_zones(0, NULL,
+	    (vm_address_t**)&zones, &num_zones)) {
+		/*
+		 * Reset the value in case the failure happened after it was
+		 * set.
+		 */
+		num_zones = 0;
+	}
+
+	if (num_zones) {
+		return zones[0];
+	}
+
+	return malloc_default_zone();
+}
+
+/* As written, this function can only promote jemalloc_zone. */
+static void
+zone_promote(void) {
+	malloc_zone_t *zone;
+
+	do {
+		/*
+		 * Unregister and reregister the default zone.  On OSX >= 10.6,
+		 * unregistering takes the last registered zone and places it
+		 * at the location of the specified zone.  Unregistering the
+		 * default zone thus makes the last registered one the default.
+		 * On OSX < 10.6, unregistering shifts all registered zones.
+		 * The first registered zone then becomes the default.
+		 */
+		malloc_zone_unregister(default_zone);
+		malloc_zone_register(default_zone);
+
+		/*
+		 * On OSX 10.6, having the default purgeable zone appear before
+		 * the default zone makes some things crash because it thinks it
+		 * owns the default zone allocated pointers.  We thus
+		 * unregister/re-register it in order to ensure it's always
+		 * after the default zone.  On OSX < 10.6, there is no purgeable
+		 * zone, so this does nothing.  On OSX >= 10.6, unregistering
+		 * replaces the purgeable zone with the last registered zone
+		 * above, i.e. the default zone.  Registering it again then puts
+		 * it at the end, obviously after the default zone.
+		 */
+		if (purgeable_zone != NULL) {
+			malloc_zone_unregister(purgeable_zone);
+			malloc_zone_register(purgeable_zone);
+		}
+
+		zone = zone_default_get();
+	} while (zone != &jemalloc_zone);
+}
+
+JEMALLOC_ATTR(constructor)
+void
+zone_register(void) {
+	/*
+	 * If something else replaced the system default zone allocator, don't
+	 * register jemalloc's.
+	 */
+	default_zone = zone_default_get();
+	if (!default_zone->zone_name || strcmp(default_zone->zone_name,
+	    "DefaultMallocZone") != 0) {
+		return;
+	}
+
+	/*
+	 * The default purgeable zone is created lazily by OSX's libc.  It uses
+	 * the default zone when it is created for "small" allocations
+	 * (< 15 KiB), but assumes the default zone is a scalable_zone.  This
+	 * obviously fails when the default zone is the jemalloc zone, so
+	 * malloc_default_purgeable_zone() is called beforehand so that the
+	 * default purgeable zone is created when the default zone is still
+	 * a scalable_zone.  As purgeable zones only exist on >= 10.6, we need
+	 * to check for the existence of malloc_default_purgeable_zone() at
+	 * run time.
+	 */
+	purgeable_zone = (malloc_default_purgeable_zone == NULL) ? NULL :
+	    malloc_default_purgeable_zone();
+
+	/* Register the custom zone.  At this point it won't be the default. */
+	zone_init();
+	malloc_zone_register(&jemalloc_zone);
+
+	/* Promote the custom zone to be default. */
+	zone_promote();
+}
diff --git a/deps/jemalloc/test/analyze/prof_bias.c b/deps/jemalloc/test/analyze/prof_bias.c
new file mode 100644
index 0000000..a96ca94
--- /dev/null
+++ b/deps/jemalloc/test/analyze/prof_bias.c
@@ -0,0 +1,60 @@
+#include "test/jemalloc_test.h"
+
+/*
+ * This is a helper utility, only meant to be run manually (and, for example,
+ * doesn't check for failures, try to skip execution in non-prof modes, etc.).
+ * It runs, allocates objects of two different sizes from the same stack trace,
+ * and exits.
+ *
+ * The idea is that some human operator will run it like:
+ *     MALLOC_CONF="prof:true,prof_final:true" test/analyze/prof_bias
+ * and manually inspect the results.
+ *
+ * The results should be:
+ * jeprof --text test/analyze/prof_bias --inuse_space jeprof.<pid>.0.f.heap:
+ * 	around 1024 MB
+ * jeprof --text test/analyze/prof_bias --inuse_objects jeprof.<pid>.0.f.heap:
+ * 	around 33554448 = 16 + 32 * 1024 * 1024
+ *
+ * And, if prof_accum is on:
+ * jeprof --text test/analyze/prof_bias --alloc_space jeprof.<pid>.0.f.heap:
+ *     around 2048 MB
+ * jeprof --text test/analyze/prof_bias --alloc_objects jeprof.<pid>.0.f.heap:
+ * 	around 67108896 = 2 * (16 + 32 * 1024 * 1024)
+ */
+
+static void
+mock_backtrace(void **vec, unsigned *len, unsigned max_len) {
+	*len = 4;
+	vec[0] = (void *)0x111;
+	vec[1] = (void *)0x222;
+	vec[2] = (void *)0x333;
+	vec[3] = (void *)0x444;
+}
+
+static void
+do_allocs(size_t sz, size_t cnt, bool do_frees) {
+	for (size_t i = 0; i < cnt; i++) {
+		void *ptr = mallocx(sz, 0);
+		assert_ptr_not_null(ptr, "Unexpected mallocx failure");
+		if (do_frees) {
+			dallocx(ptr, 0);
+		}
+	}
+}
+
+int
+main(void) {
+	size_t lg_prof_sample_local = 19;
+	int err = mallctl("prof.reset", NULL, NULL,
+	    (void *)&lg_prof_sample_local, sizeof(lg_prof_sample_local));
+	assert(err == 0);
+
+	prof_backtrace_hook_set(mock_backtrace);
+	do_allocs(16, 32 * 1024 * 1024, /* do_frees */ true);
+	do_allocs(32 * 1024* 1024, 16, /* do_frees */ true);
+	do_allocs(16, 32 * 1024 * 1024, /* do_frees */ false);
+	do_allocs(32 * 1024* 1024, 16, /* do_frees */ false);
+
+	return 0;
+}
diff --git a/deps/jemalloc/test/analyze/rand.c b/deps/jemalloc/test/analyze/rand.c
new file mode 100644
index 0000000..bb20b06
--- /dev/null
+++ b/deps/jemalloc/test/analyze/rand.c
@@ -0,0 +1,276 @@
+#include "test/jemalloc_test.h"
+
+/******************************************************************************/
+
+/*
+ * General purpose tool for examining random number distributions.
+ *
+ * Input -
+ * (a) a random number generator, and
+ * (b) the buckets:
+ *     (1) number of buckets,
+ *     (2) width of each bucket, in log scale,
+ *     (3) expected mean and stddev of the count of random numbers in each
+ *         bucket, and
+ * (c) number of iterations to invoke the generator.
+ *
+ * The program generates the specified amount of random numbers, and assess how
+ * well they conform to the expectations: for each bucket, output -
+ * (a) the (given) expected mean and stddev,
+ * (b) the actual count and any interesting level of deviation:
+ *     (1) ~68% buckets should show no interesting deviation, meaning a
+ *         deviation less than stddev from the expectation;
+ *     (2) ~27% buckets should show '+' / '-', meaning a deviation in the range
+ *         of [stddev, 2 * stddev) from the expectation;
+ *     (3) ~4% buckets should show '++' / '--', meaning a deviation in the
+ *         range of [2 * stddev, 3 * stddev) from the expectation; and
+ *     (4) less than 0.3% buckets should show more than two '+'s / '-'s.
+ *
+ * Technical remarks:
+ * (a) The generator is expected to output uint64_t numbers, so you might need
+ *     to define a wrapper.
+ * (b) The buckets must be of equal width and the lowest bucket starts at
+ *     [0, 2^lg_bucket_width - 1).
+ * (c) Any generated number >= n_bucket * 2^lg_bucket_width will be counted
+ *     towards the last bucket; the expected mean and stddev provided should
+ *     also reflect that.
+ * (d) The number of iterations is advised to be determined so that the bucket
+ *     with the minimal expected proportion gets a sufficient count.
+ */
+
+static void
+fill(size_t a[], const size_t n, const size_t k) {
+	for (size_t i = 0; i < n; ++i) {
+		a[i] = k;
+	}
+}
+
+static void
+collect_buckets(uint64_t (*gen)(void *), void *opaque, size_t buckets[],
+    const size_t n_bucket, const size_t lg_bucket_width, const size_t n_iter) {
+	for (size_t i = 0; i < n_iter; ++i) {
+		uint64_t num = gen(opaque);
+		uint64_t bucket_id = num >> lg_bucket_width;
+		if (bucket_id >= n_bucket) {
+			bucket_id = n_bucket - 1;
+		}
+		++buckets[bucket_id];
+	}
+}
+
+static void
+print_buckets(const size_t buckets[], const size_t means[],
+    const size_t stddevs[], const size_t n_bucket) {
+	for (size_t i = 0; i < n_bucket; ++i) {
+		malloc_printf("%zu:\tmean = %zu,\tstddev = %zu,\tbucket = %zu",
+		    i, means[i], stddevs[i], buckets[i]);
+
+		/* Make sure there's no overflow. */
+		assert(buckets[i] + stddevs[i] >= stddevs[i]);
+		assert(means[i] + stddevs[i] >= stddevs[i]);
+
+		if (buckets[i] + stddevs[i] <= means[i]) {
+			malloc_write(" ");
+			for (size_t t = means[i] - buckets[i]; t >= stddevs[i];
+			    t -= stddevs[i]) {
+				malloc_write("-");
+			}
+		} else if (buckets[i] >= means[i] + stddevs[i]) {
+			malloc_write(" ");
+			for (size_t t = buckets[i] - means[i]; t >= stddevs[i];
+			    t -= stddevs[i]) {
+				malloc_write("+");
+			}
+		}
+		malloc_write("\n");
+	}
+}
+
+static void
+bucket_analysis(uint64_t (*gen)(void *), void *opaque, size_t buckets[],
+    const size_t means[], const size_t stddevs[], const size_t n_bucket,
+    const size_t lg_bucket_width, const size_t n_iter) {
+	for (size_t i = 1; i <= 3; ++i) {
+		malloc_printf("round %zu\n", i);
+		fill(buckets, n_bucket, 0);
+		collect_buckets(gen, opaque, buckets, n_bucket,
+		    lg_bucket_width, n_iter);
+		print_buckets(buckets, means, stddevs, n_bucket);
+	}
+}
+
+/* (Recommended) minimal bucket mean. */
+#define MIN_BUCKET_MEAN 10000
+
+/******************************************************************************/
+
+/* Uniform random number generator. */
+
+typedef struct uniform_gen_arg_s uniform_gen_arg_t;
+struct uniform_gen_arg_s {
+	uint64_t state;
+	const unsigned lg_range;
+};
+
+static uint64_t
+uniform_gen(void *opaque) {
+	uniform_gen_arg_t *arg = (uniform_gen_arg_t *)opaque;
+	return prng_lg_range_u64(&arg->state, arg->lg_range);
+}
+
+TEST_BEGIN(test_uniform) {
+#define LG_N_BUCKET 5
+#define N_BUCKET (1 << LG_N_BUCKET)
+
+#define QUOTIENT_CEIL(n, d) (((n) - 1) / (d) + 1)
+
+	const unsigned lg_range_test = 25;
+
+	/*
+	 * Mathematical tricks to guarantee that both mean and stddev are
+	 * integers, and that the minimal bucket mean is at least
+	 * MIN_BUCKET_MEAN.
+	 */
+	const size_t q = 1 << QUOTIENT_CEIL(LG_CEIL(QUOTIENT_CEIL(
+	    MIN_BUCKET_MEAN, N_BUCKET * (N_BUCKET - 1))), 2);
+	const size_t stddev = (N_BUCKET - 1) * q;
+	const size_t mean = N_BUCKET * stddev * q;
+	const size_t n_iter = N_BUCKET * mean;
+
+	size_t means[N_BUCKET];
+	fill(means, N_BUCKET, mean);
+	size_t stddevs[N_BUCKET];
+	fill(stddevs, N_BUCKET, stddev);
+
+	uniform_gen_arg_t arg = {(uint64_t)(uintptr_t)&lg_range_test,
+	    lg_range_test};
+	size_t buckets[N_BUCKET];
+	assert_zu_ge(lg_range_test, LG_N_BUCKET, "");
+	const size_t lg_bucket_width = lg_range_test - LG_N_BUCKET;
+
+	bucket_analysis(uniform_gen, &arg, buckets, means, stddevs,
+	    N_BUCKET, lg_bucket_width, n_iter);
+
+#undef LG_N_BUCKET
+#undef N_BUCKET
+#undef QUOTIENT_CEIL
+}
+TEST_END
+
+/******************************************************************************/
+
+/* Geometric random number generator; compiled only when prof is on. */
+
+#ifdef JEMALLOC_PROF
+
+/*
+ * Fills geometric proportions and returns the minimal proportion.  See
+ * comments in test_prof_sample for explanations for n_divide.
+ */
+static double
+fill_geometric_proportions(double proportions[], const size_t n_bucket,
+    const size_t n_divide) {
+	assert(n_bucket > 0);
+	assert(n_divide > 0);
+	double x = 1.;
+	for (size_t i = 0; i < n_bucket; ++i) {
+		if (i == n_bucket - 1) {
+			proportions[i] = x;
+		} else {
+			double y = x * exp(-1. / n_divide);
+			proportions[i] = x - y;
+			x = y;
+		}
+	}
+	/*
+	 * The minimal proportion is the smaller one of the last two
+	 * proportions for geometric distribution.
+	 */
+	double min_proportion = proportions[n_bucket - 1];
+	if (n_bucket >= 2 && proportions[n_bucket - 2] < min_proportion) {
+		min_proportion = proportions[n_bucket - 2];
+	}
+	return min_proportion;
+}
+
+static size_t
+round_to_nearest(const double x) {
+	return (size_t)(x + .5);
+}
+
+static void
+fill_references(size_t means[], size_t stddevs[], const double proportions[],
+    const size_t n_bucket, const size_t n_iter) {
+	for (size_t i = 0; i < n_bucket; ++i) {
+		double x = n_iter * proportions[i];
+		means[i] = round_to_nearest(x);
+		stddevs[i] = round_to_nearest(sqrt(x * (1. - proportions[i])));
+	}
+}
+
+static uint64_t
+prof_sample_gen(void *opaque) {
+	return prof_sample_new_event_wait((tsd_t *)opaque) - 1;
+}
+
+#endif /* JEMALLOC_PROF */
+
+TEST_BEGIN(test_prof_sample) {
+	test_skip_if(!config_prof);
+#ifdef JEMALLOC_PROF
+
+/* Number of divisions within [0, mean). */
+#define LG_N_DIVIDE 3
+#define N_DIVIDE (1 << LG_N_DIVIDE)
+
+/* Coverage of buckets in terms of multiples of mean. */
+#define LG_N_MULTIPLY 2
+#define N_GEO_BUCKET (N_DIVIDE << LG_N_MULTIPLY)
+
+	test_skip_if(!opt_prof);
+
+	size_t lg_prof_sample_test = 25;
+
+	size_t lg_prof_sample_orig = lg_prof_sample;
+	assert_d_eq(mallctl("prof.reset", NULL, NULL, &lg_prof_sample_test,
+	    sizeof(size_t)), 0, "");
+	malloc_printf("lg_prof_sample = %zu\n", lg_prof_sample_test);
+
+	double proportions[N_GEO_BUCKET + 1];
+	const double min_proportion = fill_geometric_proportions(proportions,
+	    N_GEO_BUCKET + 1, N_DIVIDE);
+	const size_t n_iter = round_to_nearest(MIN_BUCKET_MEAN /
+	    min_proportion);
+	size_t means[N_GEO_BUCKET + 1];
+	size_t stddevs[N_GEO_BUCKET + 1];
+	fill_references(means, stddevs, proportions, N_GEO_BUCKET + 1, n_iter);
+
+	tsd_t *tsd = tsd_fetch();
+	assert_ptr_not_null(tsd, "");
+	size_t buckets[N_GEO_BUCKET + 1];
+	assert_zu_ge(lg_prof_sample, LG_N_DIVIDE, "");
+	const size_t lg_bucket_width = lg_prof_sample - LG_N_DIVIDE;
+
+	bucket_analysis(prof_sample_gen, tsd, buckets, means, stddevs,
+	    N_GEO_BUCKET + 1, lg_bucket_width, n_iter);
+
+	assert_d_eq(mallctl("prof.reset", NULL, NULL, &lg_prof_sample_orig,
+	    sizeof(size_t)), 0, "");
+
+#undef LG_N_DIVIDE
+#undef N_DIVIDE
+#undef LG_N_MULTIPLY
+#undef N_GEO_BUCKET
+
+#endif /* JEMALLOC_PROF */
+}
+TEST_END
+
+/******************************************************************************/
+
+int
+main(void) {
+	return test_no_reentrancy(
+	    test_uniform,
+	    test_prof_sample);
+}
diff --git a/deps/jemalloc/test/analyze/sizes.c b/deps/jemalloc/test/analyze/sizes.c
new file mode 100644
index 0000000..44c9de5
--- /dev/null
+++ b/deps/jemalloc/test/analyze/sizes.c
@@ -0,0 +1,53 @@
+#include "test/jemalloc_test.h"
+
+#include <stdio.h>
+
+/*
+ * Print the sizes of various important core data structures.  OK, I guess this
+ * isn't really a "stress" test, but it does give useful information about
+ * low-level performance characteristics, as the other things in this directory
+ * do.
+ */
+
+static void
+do_print(const char *name, size_t sz_bytes) {
+	const char *sizes[] = {"bytes", "KB", "MB", "GB", "TB", "PB", "EB",
+		"ZB"};
+	size_t sizes_max = sizeof(sizes)/sizeof(sizes[0]);
+
+	size_t ind = 0;
+	double sz = sz_bytes;
+	while (sz >= 1024 && ind < sizes_max - 1) {
+		sz /= 1024;
+		ind++;
+	}
+	if (ind == 0) {
+		printf("%-20s: %zu bytes\n", name, sz_bytes);
+	} else {
+		printf("%-20s: %f %s\n", name, sz, sizes[ind]);
+	}
+}
+
+int
+main() {
+#define P(type)								\
+	do_print(#type, sizeof(type))
+	P(arena_t);
+	P(arena_stats_t);
+	P(base_t);
+	P(decay_t);
+	P(edata_t);
+	P(ecache_t);
+	P(eset_t);
+	P(malloc_mutex_t);
+	P(prof_tctx_t);
+	P(prof_gctx_t);
+	P(prof_tdata_t);
+	P(rtree_t);
+	P(rtree_leaf_elm_t);
+	P(slab_data_t);
+	P(tcache_t);
+	P(tcache_slow_t);
+	P(tsd_t);
+#undef P
+}
diff --git a/deps/jemalloc/test/include/test/SFMT-alti.h b/deps/jemalloc/test/include/test/SFMT-alti.h
new file mode 100644
index 0000000..a1885db
--- /dev/null
+++ b/deps/jemalloc/test/include/test/SFMT-alti.h
@@ -0,0 +1,186 @@
+/*
+ * This file derives from SFMT 1.3.3
+ * (http://www.math.sci.hiroshima-u.ac.jp/~m-mat/MT/SFMT/index.html), which was
+ * released under the terms of the following license:
+ *
+ *   Copyright (c) 2006,2007 Mutsuo Saito, Makoto Matsumoto and Hiroshima
+ *   University. All rights reserved.
+ *
+ *   Redistribution and use in source and binary forms, with or without
+ *   modification, are permitted provided that the following conditions are
+ *   met:
+ *
+ *       * Redistributions of source code must retain the above copyright
+ *         notice, this list of conditions and the following disclaimer.
+ *       * Redistributions in binary form must reproduce the above
+ *         copyright notice, this list of conditions and the following
+ *         disclaimer in the documentation and/or other materials provided
+ *         with the distribution.
+ *       * Neither the name of the Hiroshima University nor the names of
+ *         its contributors may be used to endorse or promote products
+ *         derived from this software without specific prior written
+ *         permission.
+ *
+ *   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ *   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ *   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ *   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ *   OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ *   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ *   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ *   DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ *   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ *   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ *   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+/**
+ * @file SFMT-alti.h
+ *
+ * @brief SIMD oriented Fast Mersenne Twister(SFMT)
+ * pseudorandom number generator
+ *
+ * @author Mutsuo Saito (Hiroshima University)
+ * @author Makoto Matsumoto (Hiroshima University)
+ *
+ * Copyright (C) 2007 Mutsuo Saito, Makoto Matsumoto and Hiroshima
+ * University. All rights reserved.
+ *
+ * The new BSD License is applied to this software.
+ * see LICENSE.txt
+ */
+
+#ifndef SFMT_ALTI_H
+#define SFMT_ALTI_H
+
+/**
+ * This function represents the recursion formula in AltiVec and BIG ENDIAN.
+ * @param a a 128-bit part of the interal state array
+ * @param b a 128-bit part of the interal state array
+ * @param c a 128-bit part of the interal state array
+ * @param d a 128-bit part of the interal state array
+ * @return output
+ */
+JEMALLOC_ALWAYS_INLINE
+vector unsigned int vec_recursion(vector unsigned int a,
+						vector unsigned int b,
+						vector unsigned int c,
+						vector unsigned int d) {
+
+    const vector unsigned int sl1 = ALTI_SL1;
+    const vector unsigned int sr1 = ALTI_SR1;
+#ifdef ONLY64
+    const vector unsigned int mask = ALTI_MSK64;
+    const vector unsigned char perm_sl = ALTI_SL2_PERM64;
+    const vector unsigned char perm_sr = ALTI_SR2_PERM64;
+#else
+    const vector unsigned int mask = ALTI_MSK;
+    const vector unsigned char perm_sl = ALTI_SL2_PERM;
+    const vector unsigned char perm_sr = ALTI_SR2_PERM;
+#endif
+    vector unsigned int v, w, x, y, z;
+    x = vec_perm(a, (vector unsigned int)perm_sl, perm_sl);
+    v = a;
+    y = vec_sr(b, sr1);
+    z = vec_perm(c, (vector unsigned int)perm_sr, perm_sr);
+    w = vec_sl(d, sl1);
+    z = vec_xor(z, w);
+    y = vec_and(y, mask);
+    v = vec_xor(v, x);
+    z = vec_xor(z, y);
+    z = vec_xor(z, v);
+    return z;
+}
+
+/**
+ * This function fills the internal state array with pseudorandom
+ * integers.
+ */
+static inline void gen_rand_all(sfmt_t *ctx) {
+    int i;
+    vector unsigned int r, r1, r2;
+
+    r1 = ctx->sfmt[N - 2].s;
+    r2 = ctx->sfmt[N - 1].s;
+    for (i = 0; i < N - POS1; i++) {
+	r = vec_recursion(ctx->sfmt[i].s, ctx->sfmt[i + POS1].s, r1, r2);
+	ctx->sfmt[i].s = r;
+	r1 = r2;
+	r2 = r;
+    }
+    for (; i < N; i++) {
+	r = vec_recursion(ctx->sfmt[i].s, ctx->sfmt[i + POS1 - N].s, r1, r2);
+	ctx->sfmt[i].s = r;
+	r1 = r2;
+	r2 = r;
+    }
+}
+
+/**
+ * This function fills the user-specified array with pseudorandom
+ * integers.
+ *
+ * @param array an 128-bit array to be filled by pseudorandom numbers.
+ * @param size number of 128-bit pesudorandom numbers to be generated.
+ */
+static inline void gen_rand_array(sfmt_t *ctx, w128_t *array, int size) {
+    int i, j;
+    vector unsigned int r, r1, r2;
+
+    r1 = ctx->sfmt[N - 2].s;
+    r2 = ctx->sfmt[N - 1].s;
+    for (i = 0; i < N - POS1; i++) {
+	r = vec_recursion(ctx->sfmt[i].s, ctx->sfmt[i + POS1].s, r1, r2);
+	array[i].s = r;
+	r1 = r2;
+	r2 = r;
+    }
+    for (; i < N; i++) {
+	r = vec_recursion(ctx->sfmt[i].s, array[i + POS1 - N].s, r1, r2);
+	array[i].s = r;
+	r1 = r2;
+	r2 = r;
+    }
+    /* main loop */
+    for (; i < size - N; i++) {
+	r = vec_recursion(array[i - N].s, array[i + POS1 - N].s, r1, r2);
+	array[i].s = r;
+	r1 = r2;
+	r2 = r;
+    }
+    for (j = 0; j < 2 * N - size; j++) {
+	ctx->sfmt[j].s = array[j + size - N].s;
+    }
+    for (; i < size; i++) {
+	r = vec_recursion(array[i - N].s, array[i + POS1 - N].s, r1, r2);
+	array[i].s = r;
+	ctx->sfmt[j++].s = r;
+	r1 = r2;
+	r2 = r;
+    }
+}
+
+#ifndef ONLY64
+#if defined(__APPLE__)
+#define ALTI_SWAP (vector unsigned char) \
+	(4, 5, 6, 7, 0, 1, 2, 3, 12, 13, 14, 15, 8, 9, 10, 11)
+#else
+#define ALTI_SWAP {4, 5, 6, 7, 0, 1, 2, 3, 12, 13, 14, 15, 8, 9, 10, 11}
+#endif
+/**
+ * This function swaps high and low 32-bit of 64-bit integers in user
+ * specified array.
+ *
+ * @param array an 128-bit array to be swaped.
+ * @param size size of 128-bit array.
+ */
+static inline void swap(w128_t *array, int size) {
+    int i;
+    const vector unsigned char perm = ALTI_SWAP;
+
+    for (i = 0; i < size; i++) {
+	array[i].s = vec_perm(array[i].s, (vector unsigned int)perm, perm);
+    }
+}
+#endif
+
+#endif
diff --git a/deps/jemalloc/test/include/test/SFMT-params.h b/deps/jemalloc/test/include/test/SFMT-params.h
new file mode 100644
index 0000000..ade6622
--- /dev/null
+++ b/deps/jemalloc/test/include/test/SFMT-params.h
@@ -0,0 +1,132 @@
+/*
+ * This file derives from SFMT 1.3.3
+ * (http://www.math.sci.hiroshima-u.ac.jp/~m-mat/MT/SFMT/index.html), which was
+ * released under the terms of the following license:
+ *
+ *   Copyright (c) 2006,2007 Mutsuo Saito, Makoto Matsumoto and Hiroshima
+ *   University. All rights reserved.
+ *
+ *   Redistribution and use in source and binary forms, with or without
+ *   modification, are permitted provided that the following conditions are
+ *   met:
+ *
+ *       * Redistributions of source code must retain the above copyright
+ *         notice, this list of conditions and the following disclaimer.
+ *       * Redistributions in binary form must reproduce the above
+ *         copyright notice, this list of conditions and the following
+ *         disclaimer in the documentation and/or other materials provided
+ *         with the distribution.
+ *       * Neither the name of the Hiroshima University nor the names of
+ *         its contributors may be used to endorse or promote products
+ *         derived from this software without specific prior written
+ *         permission.
+ *
+ *   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ *   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ *   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ *   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ *   OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ *   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ *   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ *   DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ *   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ *   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ *   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+#ifndef SFMT_PARAMS_H
+#define SFMT_PARAMS_H
+
+#if !defined(MEXP)
+#ifdef __GNUC__
+  #warning "MEXP is not defined. I assume MEXP is 19937."
+#endif
+  #define MEXP 19937
+#endif
+/*-----------------
+  BASIC DEFINITIONS
+  -----------------*/
+/** Mersenne Exponent. The period of the sequence 
+ *  is a multiple of 2^MEXP-1.
+ * #define MEXP 19937 */
+/** SFMT generator has an internal state array of 128-bit integers,
+ * and N is its size. */
+#define N (MEXP / 128 + 1)
+/** N32 is the size of internal state array when regarded as an array
+ * of 32-bit integers.*/
+#define N32 (N * 4)
+/** N64 is the size of internal state array when regarded as an array
+ * of 64-bit integers.*/
+#define N64 (N * 2)
+
+/*----------------------
+  the parameters of SFMT
+  following definitions are in paramsXXXX.h file.
+  ----------------------*/
+/** the pick up position of the array.
+#define POS1 122 
+*/
+
+/** the parameter of shift left as four 32-bit registers.
+#define SL1 18
+ */
+
+/** the parameter of shift left as one 128-bit register. 
+ * The 128-bit integer is shifted by (SL2 * 8) bits. 
+#define SL2 1 
+*/
+
+/** the parameter of shift right as four 32-bit registers.
+#define SR1 11
+*/
+
+/** the parameter of shift right as one 128-bit register. 
+ * The 128-bit integer is shifted by (SL2 * 8) bits. 
+#define SR2 1 
+*/
+
+/** A bitmask, used in the recursion.  These parameters are introduced
+ * to break symmetry of SIMD.
+#define MSK1 0xdfffffefU
+#define MSK2 0xddfecb7fU
+#define MSK3 0xbffaffffU
+#define MSK4 0xbffffff6U 
+*/
+
+/** These definitions are part of a 128-bit period certification vector.
+#define PARITY1	0x00000001U
+#define PARITY2	0x00000000U
+#define PARITY3	0x00000000U
+#define PARITY4	0xc98e126aU
+*/
+
+#if MEXP == 607
+  #include "test/SFMT-params607.h"
+#elif MEXP == 1279
+  #include "test/SFMT-params1279.h"
+#elif MEXP == 2281
+  #include "test/SFMT-params2281.h"
+#elif MEXP == 4253
+  #include "test/SFMT-params4253.h"
+#elif MEXP == 11213
+  #include "test/SFMT-params11213.h"
+#elif MEXP == 19937
+  #include "test/SFMT-params19937.h"
+#elif MEXP == 44497
+  #include "test/SFMT-params44497.h"
+#elif MEXP == 86243
+  #include "test/SFMT-params86243.h"
+#elif MEXP == 132049
+  #include "test/SFMT-params132049.h"
+#elif MEXP == 216091
+  #include "test/SFMT-params216091.h"
+#else
+#ifdef __GNUC__
+  #error "MEXP is not valid."
+  #undef MEXP
+#else
+  #undef MEXP
+#endif
+
+#endif
+
+#endif /* SFMT_PARAMS_H */
diff --git a/deps/jemalloc/test/include/test/SFMT-params11213.h b/deps/jemalloc/test/include/test/SFMT-params11213.h
new file mode 100644
index 0000000..2994bd2
--- /dev/null
+++ b/deps/jemalloc/test/include/test/SFMT-params11213.h
@@ -0,0 +1,81 @@
+/*
+ * This file derives from SFMT 1.3.3
+ * (http://www.math.sci.hiroshima-u.ac.jp/~m-mat/MT/SFMT/index.html), which was
+ * released under the terms of the following license:
+ *
+ *   Copyright (c) 2006,2007 Mutsuo Saito, Makoto Matsumoto and Hiroshima
+ *   University. All rights reserved.
+ *
+ *   Redistribution and use in source and binary forms, with or without
+ *   modification, are permitted provided that the following conditions are
+ *   met:
+ *
+ *       * Redistributions of source code must retain the above copyright
+ *         notice, this list of conditions and the following disclaimer.
+ *       * Redistributions in binary form must reproduce the above
+ *         copyright notice, this list of conditions and the following
+ *         disclaimer in the documentation and/or other materials provided
+ *         with the distribution.
+ *       * Neither the name of the Hiroshima University nor the names of
+ *         its contributors may be used to endorse or promote products
+ *         derived from this software without specific prior written
+ *         permission.
+ *
+ *   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ *   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ *   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ *   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ *   OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ *   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ *   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ *   DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ *   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ *   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ *   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+#ifndef SFMT_PARAMS11213_H
+#define SFMT_PARAMS11213_H
+
+#define POS1	68
+#define SL1	14
+#define SL2	3
+#define SR1	7
+#define SR2	3
+#define MSK1	0xeffff7fbU
+#define MSK2	0xffffffefU
+#define MSK3	0xdfdfbfffU
+#define MSK4	0x7fffdbfdU
+#define PARITY1	0x00000001U
+#define PARITY2	0x00000000U
+#define PARITY3	0xe8148000U
+#define PARITY4	0xd0c7afa3U
+
+
+/* PARAMETERS FOR ALTIVEC */
+#if defined(__APPLE__)	/* For OSX */
+    #define ALTI_SL1	(vector unsigned int)(SL1, SL1, SL1, SL1)
+    #define ALTI_SR1	(vector unsigned int)(SR1, SR1, SR1, SR1)
+    #define ALTI_MSK	(vector unsigned int)(MSK1, MSK2, MSK3, MSK4)
+    #define ALTI_MSK64 \
+	(vector unsigned int)(MSK2, MSK1, MSK4, MSK3)
+    #define ALTI_SL2_PERM \
+	(vector unsigned char)(3,21,21,21,7,0,1,2,11,4,5,6,15,8,9,10)
+    #define ALTI_SL2_PERM64 \
+	(vector unsigned char)(3,4,5,6,7,29,29,29,11,12,13,14,15,0,1,2)
+    #define ALTI_SR2_PERM \
+	(vector unsigned char)(5,6,7,0,9,10,11,4,13,14,15,8,19,19,19,12)
+    #define ALTI_SR2_PERM64 \
+	(vector unsigned char)(13,14,15,0,1,2,3,4,19,19,19,8,9,10,11,12)
+#else	/* For OTHER OSs(Linux?) */
+    #define ALTI_SL1	{SL1, SL1, SL1, SL1}
+    #define ALTI_SR1	{SR1, SR1, SR1, SR1}
+    #define ALTI_MSK	{MSK1, MSK2, MSK3, MSK4}
+    #define ALTI_MSK64	{MSK2, MSK1, MSK4, MSK3}
+    #define ALTI_SL2_PERM	{3,21,21,21,7,0,1,2,11,4,5,6,15,8,9,10}
+    #define ALTI_SL2_PERM64	{3,4,5,6,7,29,29,29,11,12,13,14,15,0,1,2}
+    #define ALTI_SR2_PERM	{5,6,7,0,9,10,11,4,13,14,15,8,19,19,19,12}
+    #define ALTI_SR2_PERM64	{13,14,15,0,1,2,3,4,19,19,19,8,9,10,11,12}
+#endif	/* For OSX */
+#define IDSTR	"SFMT-11213:68-14-3-7-3:effff7fb-ffffffef-dfdfbfff-7fffdbfd"
+
+#endif /* SFMT_PARAMS11213_H */
diff --git a/deps/jemalloc/test/include/test/SFMT-params1279.h b/deps/jemalloc/test/include/test/SFMT-params1279.h
new file mode 100644
index 0000000..d7959f9
--- /dev/null
+++ b/deps/jemalloc/test/include/test/SFMT-params1279.h
@@ -0,0 +1,81 @@
+/*
+ * This file derives from SFMT 1.3.3
+ * (http://www.math.sci.hiroshima-u.ac.jp/~m-mat/MT/SFMT/index.html), which was
+ * released under the terms of the following license:
+ *
+ *   Copyright (c) 2006,2007 Mutsuo Saito, Makoto Matsumoto and Hiroshima
+ *   University. All rights reserved.
+ *
+ *   Redistribution and use in source and binary forms, with or without
+ *   modification, are permitted provided that the following conditions are
+ *   met:
+ *
+ *       * Redistributions of source code must retain the above copyright
+ *         notice, this list of conditions and the following disclaimer.
+ *       * Redistributions in binary form must reproduce the above
+ *         copyright notice, this list of conditions and the following
+ *         disclaimer in the documentation and/or other materials provided
+ *         with the distribution.
+ *       * Neither the name of the Hiroshima University nor the names of
+ *         its contributors may be used to endorse or promote products
+ *         derived from this software without specific prior written
+ *         permission.
+ *
+ *   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ *   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ *   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ *   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ *   OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ *   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ *   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ *   DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ *   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ *   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ *   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+#ifndef SFMT_PARAMS1279_H
+#define SFMT_PARAMS1279_H
+
+#define POS1	7
+#define SL1	14
+#define SL2	3
+#define SR1	5
+#define SR2	1
+#define MSK1	0xf7fefffdU
+#define MSK2	0x7fefcfffU
+#define MSK3	0xaff3ef3fU
+#define MSK4	0xb5ffff7fU
+#define PARITY1	0x00000001U
+#define PARITY2	0x00000000U
+#define PARITY3	0x00000000U
+#define PARITY4	0x20000000U
+
+
+/* PARAMETERS FOR ALTIVEC */
+#if defined(__APPLE__)	/* For OSX */
+    #define ALTI_SL1	(vector unsigned int)(SL1, SL1, SL1, SL1)
+    #define ALTI_SR1	(vector unsigned int)(SR1, SR1, SR1, SR1)
+    #define ALTI_MSK	(vector unsigned int)(MSK1, MSK2, MSK3, MSK4)
+    #define ALTI_MSK64 \
+	(vector unsigned int)(MSK2, MSK1, MSK4, MSK3)
+    #define ALTI_SL2_PERM \
+	(vector unsigned char)(3,21,21,21,7,0,1,2,11,4,5,6,15,8,9,10)
+    #define ALTI_SL2_PERM64 \
+	(vector unsigned char)(3,4,5,6,7,29,29,29,11,12,13,14,15,0,1,2)
+    #define ALTI_SR2_PERM \
+	(vector unsigned char)(7,0,1,2,11,4,5,6,15,8,9,10,17,12,13,14)
+    #define ALTI_SR2_PERM64 \
+	(vector unsigned char)(15,0,1,2,3,4,5,6,17,8,9,10,11,12,13,14)
+#else	/* For OTHER OSs(Linux?) */
+    #define ALTI_SL1	{SL1, SL1, SL1, SL1}
+    #define ALTI_SR1	{SR1, SR1, SR1, SR1}
+    #define ALTI_MSK	{MSK1, MSK2, MSK3, MSK4}
+    #define ALTI_MSK64	{MSK2, MSK1, MSK4, MSK3}
+    #define ALTI_SL2_PERM	{3,21,21,21,7,0,1,2,11,4,5,6,15,8,9,10}
+    #define ALTI_SL2_PERM64	{3,4,5,6,7,29,29,29,11,12,13,14,15,0,1,2}
+    #define ALTI_SR2_PERM	{7,0,1,2,11,4,5,6,15,8,9,10,17,12,13,14}
+    #define ALTI_SR2_PERM64	{15,0,1,2,3,4,5,6,17,8,9,10,11,12,13,14}
+#endif	/* For OSX */
+#define IDSTR	"SFMT-1279:7-14-3-5-1:f7fefffd-7fefcfff-aff3ef3f-b5ffff7f"
+
+#endif /* SFMT_PARAMS1279_H */
diff --git a/deps/jemalloc/test/include/test/SFMT-params132049.h b/deps/jemalloc/test/include/test/SFMT-params132049.h
new file mode 100644
index 0000000..a1dcec3
--- /dev/null
+++ b/deps/jemalloc/test/include/test/SFMT-params132049.h
@@ -0,0 +1,81 @@
+/*
+ * This file derives from SFMT 1.3.3
+ * (http://www.math.sci.hiroshima-u.ac.jp/~m-mat/MT/SFMT/index.html), which was
+ * released under the terms of the following license:
+ *
+ *   Copyright (c) 2006,2007 Mutsuo Saito, Makoto Matsumoto and Hiroshima
+ *   University. All rights reserved.
+ *
+ *   Redistribution and use in source and binary forms, with or without
+ *   modification, are permitted provided that the following conditions are
+ *   met:
+ *
+ *       * Redistributions of source code must retain the above copyright
+ *         notice, this list of conditions and the following disclaimer.
+ *       * Redistributions in binary form must reproduce the above
+ *         copyright notice, this list of conditions and the following
+ *         disclaimer in the documentation and/or other materials provided
+ *         with the distribution.
+ *       * Neither the name of the Hiroshima University nor the names of
+ *         its contributors may be used to endorse or promote products
+ *         derived from this software without specific prior written
+ *         permission.
+ *
+ *   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ *   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ *   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ *   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ *   OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ *   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ *   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ *   DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ *   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ *   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ *   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+#ifndef SFMT_PARAMS132049_H
+#define SFMT_PARAMS132049_H
+
+#define POS1	110
+#define SL1	19
+#define SL2	1
+#define SR1	21
+#define SR2	1
+#define MSK1	0xffffbb5fU
+#define MSK2	0xfb6ebf95U
+#define MSK3	0xfffefffaU
+#define MSK4	0xcff77fffU
+#define PARITY1	0x00000001U
+#define PARITY2	0x00000000U
+#define PARITY3	0xcb520000U
+#define PARITY4	0xc7e91c7dU
+
+
+/* PARAMETERS FOR ALTIVEC */
+#if defined(__APPLE__)	/* For OSX */
+    #define ALTI_SL1	(vector unsigned int)(SL1, SL1, SL1, SL1)
+    #define ALTI_SR1	(vector unsigned int)(SR1, SR1, SR1, SR1)
+    #define ALTI_MSK	(vector unsigned int)(MSK1, MSK2, MSK3, MSK4)
+    #define ALTI_MSK64 \
+	(vector unsigned int)(MSK2, MSK1, MSK4, MSK3)
+    #define ALTI_SL2_PERM \
+	(vector unsigned char)(1,2,3,23,5,6,7,0,9,10,11,4,13,14,15,8)
+    #define ALTI_SL2_PERM64 \
+	(vector unsigned char)(1,2,3,4,5,6,7,31,9,10,11,12,13,14,15,0)
+    #define ALTI_SR2_PERM \
+	(vector unsigned char)(7,0,1,2,11,4,5,6,15,8,9,10,17,12,13,14)
+    #define ALTI_SR2_PERM64 \
+	(vector unsigned char)(15,0,1,2,3,4,5,6,17,8,9,10,11,12,13,14)
+#else	/* For OTHER OSs(Linux?) */
+    #define ALTI_SL1	{SL1, SL1, SL1, SL1}
+    #define ALTI_SR1	{SR1, SR1, SR1, SR1}
+    #define ALTI_MSK	{MSK1, MSK2, MSK3, MSK4}
+    #define ALTI_MSK64	{MSK2, MSK1, MSK4, MSK3}
+    #define ALTI_SL2_PERM	{1,2,3,23,5,6,7,0,9,10,11,4,13,14,15,8}
+    #define ALTI_SL2_PERM64	{1,2,3,4,5,6,7,31,9,10,11,12,13,14,15,0}
+    #define ALTI_SR2_PERM	{7,0,1,2,11,4,5,6,15,8,9,10,17,12,13,14}
+    #define ALTI_SR2_PERM64	{15,0,1,2,3,4,5,6,17,8,9,10,11,12,13,14}
+#endif	/* For OSX */
+#define IDSTR	"SFMT-132049:110-19-1-21-1:ffffbb5f-fb6ebf95-fffefffa-cff77fff"
+
+#endif /* SFMT_PARAMS132049_H */
diff --git a/deps/jemalloc/test/include/test/SFMT-params19937.h b/deps/jemalloc/test/include/test/SFMT-params19937.h
new file mode 100644
index 0000000..fb92b4c
--- /dev/null
+++ b/deps/jemalloc/test/include/test/SFMT-params19937.h
@@ -0,0 +1,81 @@
+/*
+ * This file derives from SFMT 1.3.3
+ * (http://www.math.sci.hiroshima-u.ac.jp/~m-mat/MT/SFMT/index.html), which was
+ * released under the terms of the following license:
+ *
+ *   Copyright (c) 2006,2007 Mutsuo Saito, Makoto Matsumoto and Hiroshima
+ *   University. All rights reserved.
+ *
+ *   Redistribution and use in source and binary forms, with or without
+ *   modification, are permitted provided that the following conditions are
+ *   met:
+ *
+ *       * Redistributions of source code must retain the above copyright
+ *         notice, this list of conditions and the following disclaimer.
+ *       * Redistributions in binary form must reproduce the above
+ *         copyright notice, this list of conditions and the following
+ *         disclaimer in the documentation and/or other materials provided
+ *         with the distribution.
+ *       * Neither the name of the Hiroshima University nor the names of
+ *         its contributors may be used to endorse or promote products
+ *         derived from this software without specific prior written
+ *         permission.
+ *
+ *   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ *   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ *   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ *   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ *   OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ *   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ *   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ *   DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ *   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ *   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ *   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+#ifndef SFMT_PARAMS19937_H
+#define SFMT_PARAMS19937_H
+
+#define POS1	122
+#define SL1	18
+#define SL2	1
+#define SR1	11
+#define SR2	1
+#define MSK1	0xdfffffefU
+#define MSK2	0xddfecb7fU
+#define MSK3	0xbffaffffU
+#define MSK4	0xbffffff6U
+#define PARITY1	0x00000001U
+#define PARITY2	0x00000000U
+#define PARITY3	0x00000000U
+#define PARITY4	0x13c9e684U
+
+
+/* PARAMETERS FOR ALTIVEC */
+#if defined(__APPLE__)	/* For OSX */
+    #define ALTI_SL1	(vector unsigned int)(SL1, SL1, SL1, SL1)
+    #define ALTI_SR1	(vector unsigned int)(SR1, SR1, SR1, SR1)
+    #define ALTI_MSK	(vector unsigned int)(MSK1, MSK2, MSK3, MSK4)
+    #define ALTI_MSK64 \
+	(vector unsigned int)(MSK2, MSK1, MSK4, MSK3)
+    #define ALTI_SL2_PERM \
+	(vector unsigned char)(1,2,3,23,5,6,7,0,9,10,11,4,13,14,15,8)
+    #define ALTI_SL2_PERM64 \
+	(vector unsigned char)(1,2,3,4,5,6,7,31,9,10,11,12,13,14,15,0)
+    #define ALTI_SR2_PERM \
+	(vector unsigned char)(7,0,1,2,11,4,5,6,15,8,9,10,17,12,13,14)
+    #define ALTI_SR2_PERM64 \
+	(vector unsigned char)(15,0,1,2,3,4,5,6,17,8,9,10,11,12,13,14)
+#else	/* For OTHER OSs(Linux?) */
+    #define ALTI_SL1	{SL1, SL1, SL1, SL1}
+    #define ALTI_SR1	{SR1, SR1, SR1, SR1}
+    #define ALTI_MSK	{MSK1, MSK2, MSK3, MSK4}
+    #define ALTI_MSK64	{MSK2, MSK1, MSK4, MSK3}
+    #define ALTI_SL2_PERM	{1,2,3,23,5,6,7,0,9,10,11,4,13,14,15,8}
+    #define ALTI_SL2_PERM64	{1,2,3,4,5,6,7,31,9,10,11,12,13,14,15,0}
+    #define ALTI_SR2_PERM	{7,0,1,2,11,4,5,6,15,8,9,10,17,12,13,14}
+    #define ALTI_SR2_PERM64	{15,0,1,2,3,4,5,6,17,8,9,10,11,12,13,14}
+#endif	/* For OSX */
+#define IDSTR	"SFMT-19937:122-18-1-11-1:dfffffef-ddfecb7f-bffaffff-bffffff6"
+
+#endif /* SFMT_PARAMS19937_H */
diff --git a/deps/jemalloc/test/include/test/SFMT-params216091.h b/deps/jemalloc/test/include/test/SFMT-params216091.h
new file mode 100644
index 0000000..125ce28
--- /dev/null
+++ b/deps/jemalloc/test/include/test/SFMT-params216091.h
@@ -0,0 +1,81 @@
+/*
+ * This file derives from SFMT 1.3.3
+ * (http://www.math.sci.hiroshima-u.ac.jp/~m-mat/MT/SFMT/index.html), which was
+ * released under the terms of the following license:
+ *
+ *   Copyright (c) 2006,2007 Mutsuo Saito, Makoto Matsumoto and Hiroshima
+ *   University. All rights reserved.
+ *
+ *   Redistribution and use in source and binary forms, with or without
+ *   modification, are permitted provided that the following conditions are
+ *   met:
+ *
+ *       * Redistributions of source code must retain the above copyright
+ *         notice, this list of conditions and the following disclaimer.
+ *       * Redistributions in binary form must reproduce the above
+ *         copyright notice, this list of conditions and the following
+ *         disclaimer in the documentation and/or other materials provided
+ *         with the distribution.
+ *       * Neither the name of the Hiroshima University nor the names of
+ *         its contributors may be used to endorse or promote products
+ *         derived from this software without specific prior written
+ *         permission.
+ *
+ *   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ *   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ *   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ *   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ *   OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ *   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ *   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ *   DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ *   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ *   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ *   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+#ifndef SFMT_PARAMS216091_H
+#define SFMT_PARAMS216091_H
+
+#define POS1	627
+#define SL1	11
+#define SL2	3
+#define SR1	10
+#define SR2	1
+#define MSK1	0xbff7bff7U
+#define MSK2	0xbfffffffU
+#define MSK3	0xbffffa7fU
+#define MSK4	0xffddfbfbU
+#define PARITY1	0xf8000001U
+#define PARITY2	0x89e80709U
+#define PARITY3	0x3bd2b64bU
+#define PARITY4	0x0c64b1e4U
+
+
+/* PARAMETERS FOR ALTIVEC */
+#if defined(__APPLE__)	/* For OSX */
+    #define ALTI_SL1	(vector unsigned int)(SL1, SL1, SL1, SL1)
+    #define ALTI_SR1	(vector unsigned int)(SR1, SR1, SR1, SR1)
+    #define ALTI_MSK	(vector unsigned int)(MSK1, MSK2, MSK3, MSK4)
+    #define ALTI_MSK64 \
+	(vector unsigned int)(MSK2, MSK1, MSK4, MSK3)
+    #define ALTI_SL2_PERM \
+	(vector unsigned char)(3,21,21,21,7,0,1,2,11,4,5,6,15,8,9,10)
+    #define ALTI_SL2_PERM64 \
+	(vector unsigned char)(3,4,5,6,7,29,29,29,11,12,13,14,15,0,1,2)
+    #define ALTI_SR2_PERM \
+	(vector unsigned char)(7,0,1,2,11,4,5,6,15,8,9,10,17,12,13,14)
+    #define ALTI_SR2_PERM64 \
+	(vector unsigned char)(15,0,1,2,3,4,5,6,17,8,9,10,11,12,13,14)
+#else	/* For OTHER OSs(Linux?) */
+    #define ALTI_SL1	{SL1, SL1, SL1, SL1}
+    #define ALTI_SR1	{SR1, SR1, SR1, SR1}
+    #define ALTI_MSK	{MSK1, MSK2, MSK3, MSK4}
+    #define ALTI_MSK64	{MSK2, MSK1, MSK4, MSK3}
+    #define ALTI_SL2_PERM	{3,21,21,21,7,0,1,2,11,4,5,6,15,8,9,10}
+    #define ALTI_SL2_PERM64	{3,4,5,6,7,29,29,29,11,12,13,14,15,0,1,2}
+    #define ALTI_SR2_PERM	{7,0,1,2,11,4,5,6,15,8,9,10,17,12,13,14}
+    #define ALTI_SR2_PERM64	{15,0,1,2,3,4,5,6,17,8,9,10,11,12,13,14}
+#endif	/* For OSX */
+#define IDSTR	"SFMT-216091:627-11-3-10-1:bff7bff7-bfffffff-bffffa7f-ffddfbfb"
+
+#endif /* SFMT_PARAMS216091_H */
diff --git a/deps/jemalloc/test/include/test/SFMT-params2281.h b/deps/jemalloc/test/include/test/SFMT-params2281.h
new file mode 100644
index 0000000..0ef85c4
--- /dev/null
+++ b/deps/jemalloc/test/include/test/SFMT-params2281.h
@@ -0,0 +1,81 @@
+/*
+ * This file derives from SFMT 1.3.3
+ * (http://www.math.sci.hiroshima-u.ac.jp/~m-mat/MT/SFMT/index.html), which was
+ * released under the terms of the following license:
+ *
+ *   Copyright (c) 2006,2007 Mutsuo Saito, Makoto Matsumoto and Hiroshima
+ *   University. All rights reserved.
+ *
+ *   Redistribution and use in source and binary forms, with or without
+ *   modification, are permitted provided that the following conditions are
+ *   met:
+ *
+ *       * Redistributions of source code must retain the above copyright
+ *         notice, this list of conditions and the following disclaimer.
+ *       * Redistributions in binary form must reproduce the above
+ *         copyright notice, this list of conditions and the following
+ *         disclaimer in the documentation and/or other materials provided
+ *         with the distribution.
+ *       * Neither the name of the Hiroshima University nor the names of
+ *         its contributors may be used to endorse or promote products
+ *         derived from this software without specific prior written
+ *         permission.
+ *
+ *   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ *   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ *   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ *   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ *   OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ *   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ *   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ *   DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ *   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ *   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ *   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+#ifndef SFMT_PARAMS2281_H
+#define SFMT_PARAMS2281_H
+
+#define POS1	12
+#define SL1	19
+#define SL2	1
+#define SR1	5
+#define SR2	1
+#define MSK1	0xbff7ffbfU
+#define MSK2	0xfdfffffeU
+#define MSK3	0xf7ffef7fU
+#define MSK4	0xf2f7cbbfU
+#define PARITY1	0x00000001U
+#define PARITY2	0x00000000U
+#define PARITY3	0x00000000U
+#define PARITY4	0x41dfa600U
+
+
+/* PARAMETERS FOR ALTIVEC */
+#if defined(__APPLE__)	/* For OSX */
+    #define ALTI_SL1	(vector unsigned int)(SL1, SL1, SL1, SL1)
+    #define ALTI_SR1	(vector unsigned int)(SR1, SR1, SR1, SR1)
+    #define ALTI_MSK	(vector unsigned int)(MSK1, MSK2, MSK3, MSK4)
+    #define ALTI_MSK64 \
+	(vector unsigned int)(MSK2, MSK1, MSK4, MSK3)
+    #define ALTI_SL2_PERM \
+	(vector unsigned char)(1,2,3,23,5,6,7,0,9,10,11,4,13,14,15,8)
+    #define ALTI_SL2_PERM64 \
+	(vector unsigned char)(1,2,3,4,5,6,7,31,9,10,11,12,13,14,15,0)
+    #define ALTI_SR2_PERM \
+	(vector unsigned char)(7,0,1,2,11,4,5,6,15,8,9,10,17,12,13,14)
+    #define ALTI_SR2_PERM64 \
+	(vector unsigned char)(15,0,1,2,3,4,5,6,17,8,9,10,11,12,13,14)
+#else	/* For OTHER OSs(Linux?) */
+    #define ALTI_SL1	{SL1, SL1, SL1, SL1}
+    #define ALTI_SR1	{SR1, SR1, SR1, SR1}
+    #define ALTI_MSK	{MSK1, MSK2, MSK3, MSK4}
+    #define ALTI_MSK64	{MSK2, MSK1, MSK4, MSK3}
+    #define ALTI_SL2_PERM	{1,2,3,23,5,6,7,0,9,10,11,4,13,14,15,8}
+    #define ALTI_SL2_PERM64	{1,2,3,4,5,6,7,31,9,10,11,12,13,14,15,0}
+    #define ALTI_SR2_PERM	{7,0,1,2,11,4,5,6,15,8,9,10,17,12,13,14}
+    #define ALTI_SR2_PERM64	{15,0,1,2,3,4,5,6,17,8,9,10,11,12,13,14}
+#endif	/* For OSX */
+#define IDSTR	"SFMT-2281:12-19-1-5-1:bff7ffbf-fdfffffe-f7ffef7f-f2f7cbbf"
+
+#endif /* SFMT_PARAMS2281_H */
diff --git a/deps/jemalloc/test/include/test/SFMT-params4253.h b/deps/jemalloc/test/include/test/SFMT-params4253.h
new file mode 100644
index 0000000..9f07bc6
--- /dev/null
+++ b/deps/jemalloc/test/include/test/SFMT-params4253.h
@@ -0,0 +1,81 @@
+/*
+ * This file derives from SFMT 1.3.3
+ * (http://www.math.sci.hiroshima-u.ac.jp/~m-mat/MT/SFMT/index.html), which was
+ * released under the terms of the following license:
+ *
+ *   Copyright (c) 2006,2007 Mutsuo Saito, Makoto Matsumoto and Hiroshima
+ *   University. All rights reserved.
+ *
+ *   Redistribution and use in source and binary forms, with or without
+ *   modification, are permitted provided that the following conditions are
+ *   met:
+ *
+ *       * Redistributions of source code must retain the above copyright
+ *         notice, this list of conditions and the following disclaimer.
+ *       * Redistributions in binary form must reproduce the above
+ *         copyright notice, this list of conditions and the following
+ *         disclaimer in the documentation and/or other materials provided
+ *         with the distribution.
+ *       * Neither the name of the Hiroshima University nor the names of
+ *         its contributors may be used to endorse or promote products
+ *         derived from this software without specific prior written
+ *         permission.
+ *
+ *   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ *   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ *   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ *   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ *   OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ *   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ *   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ *   DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ *   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ *   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ *   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+#ifndef SFMT_PARAMS4253_H
+#define SFMT_PARAMS4253_H
+
+#define POS1	17
+#define SL1	20
+#define SL2	1
+#define SR1	7
+#define SR2	1
+#define MSK1	0x9f7bffffU
+#define MSK2	0x9fffff5fU
+#define MSK3	0x3efffffbU
+#define MSK4	0xfffff7bbU
+#define PARITY1	0xa8000001U
+#define PARITY2	0xaf5390a3U
+#define PARITY3	0xb740b3f8U
+#define PARITY4	0x6c11486dU
+
+
+/* PARAMETERS FOR ALTIVEC */
+#if defined(__APPLE__)	/* For OSX */
+    #define ALTI_SL1	(vector unsigned int)(SL1, SL1, SL1, SL1)
+    #define ALTI_SR1	(vector unsigned int)(SR1, SR1, SR1, SR1)
+    #define ALTI_MSK	(vector unsigned int)(MSK1, MSK2, MSK3, MSK4)
+    #define ALTI_MSK64 \
+	(vector unsigned int)(MSK2, MSK1, MSK4, MSK3)
+    #define ALTI_SL2_PERM \
+	(vector unsigned char)(1,2,3,23,5,6,7,0,9,10,11,4,13,14,15,8)
+    #define ALTI_SL2_PERM64 \
+	(vector unsigned char)(1,2,3,4,5,6,7,31,9,10,11,12,13,14,15,0)
+    #define ALTI_SR2_PERM \
+	(vector unsigned char)(7,0,1,2,11,4,5,6,15,8,9,10,17,12,13,14)
+    #define ALTI_SR2_PERM64 \
+	(vector unsigned char)(15,0,1,2,3,4,5,6,17,8,9,10,11,12,13,14)
+#else	/* For OTHER OSs(Linux?) */
+    #define ALTI_SL1	{SL1, SL1, SL1, SL1}
+    #define ALTI_SR1	{SR1, SR1, SR1, SR1}
+    #define ALTI_MSK	{MSK1, MSK2, MSK3, MSK4}
+    #define ALTI_MSK64	{MSK2, MSK1, MSK4, MSK3}
+    #define ALTI_SL2_PERM	{1,2,3,23,5,6,7,0,9,10,11,4,13,14,15,8}
+    #define ALTI_SL2_PERM64	{1,2,3,4,5,6,7,31,9,10,11,12,13,14,15,0}
+    #define ALTI_SR2_PERM	{7,0,1,2,11,4,5,6,15,8,9,10,17,12,13,14}
+    #define ALTI_SR2_PERM64	{15,0,1,2,3,4,5,6,17,8,9,10,11,12,13,14}
+#endif	/* For OSX */
+#define IDSTR	"SFMT-4253:17-20-1-7-1:9f7bffff-9fffff5f-3efffffb-fffff7bb"
+
+#endif /* SFMT_PARAMS4253_H */
diff --git a/deps/jemalloc/test/include/test/SFMT-params44497.h b/deps/jemalloc/test/include/test/SFMT-params44497.h
new file mode 100644
index 0000000..85598fe
--- /dev/null
+++ b/deps/jemalloc/test/include/test/SFMT-params44497.h
@@ -0,0 +1,81 @@
+/*
+ * This file derives from SFMT 1.3.3
+ * (http://www.math.sci.hiroshima-u.ac.jp/~m-mat/MT/SFMT/index.html), which was
+ * released under the terms of the following license:
+ *
+ *   Copyright (c) 2006,2007 Mutsuo Saito, Makoto Matsumoto and Hiroshima
+ *   University. All rights reserved.
+ *
+ *   Redistribution and use in source and binary forms, with or without
+ *   modification, are permitted provided that the following conditions are
+ *   met:
+ *
+ *       * Redistributions of source code must retain the above copyright
+ *         notice, this list of conditions and the following disclaimer.
+ *       * Redistributions in binary form must reproduce the above
+ *         copyright notice, this list of conditions and the following
+ *         disclaimer in the documentation and/or other materials provided
+ *         with the distribution.
+ *       * Neither the name of the Hiroshima University nor the names of
+ *         its contributors may be used to endorse or promote products
+ *         derived from this software without specific prior written
+ *         permission.
+ *
+ *   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ *   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ *   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ *   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ *   OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ *   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ *   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ *   DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ *   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ *   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ *   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+#ifndef SFMT_PARAMS44497_H
+#define SFMT_PARAMS44497_H
+
+#define POS1	330
+#define SL1	5
+#define SL2	3
+#define SR1	9
+#define SR2	3
+#define MSK1	0xeffffffbU
+#define MSK2	0xdfbebfffU
+#define MSK3	0xbfbf7befU
+#define MSK4	0x9ffd7bffU
+#define PARITY1	0x00000001U
+#define PARITY2	0x00000000U
+#define PARITY3	0xa3ac4000U
+#define PARITY4	0xecc1327aU
+
+
+/* PARAMETERS FOR ALTIVEC */
+#if defined(__APPLE__)	/* For OSX */
+    #define ALTI_SL1	(vector unsigned int)(SL1, SL1, SL1, SL1)
+    #define ALTI_SR1	(vector unsigned int)(SR1, SR1, SR1, SR1)
+    #define ALTI_MSK	(vector unsigned int)(MSK1, MSK2, MSK3, MSK4)
+    #define ALTI_MSK64 \
+	(vector unsigned int)(MSK2, MSK1, MSK4, MSK3)
+    #define ALTI_SL2_PERM \
+	(vector unsigned char)(3,21,21,21,7,0,1,2,11,4,5,6,15,8,9,10)
+    #define ALTI_SL2_PERM64 \
+	(vector unsigned char)(3,4,5,6,7,29,29,29,11,12,13,14,15,0,1,2)
+    #define ALTI_SR2_PERM \
+	(vector unsigned char)(5,6,7,0,9,10,11,4,13,14,15,8,19,19,19,12)
+    #define ALTI_SR2_PERM64 \
+	(vector unsigned char)(13,14,15,0,1,2,3,4,19,19,19,8,9,10,11,12)
+#else	/* For OTHER OSs(Linux?) */
+    #define ALTI_SL1	{SL1, SL1, SL1, SL1}
+    #define ALTI_SR1	{SR1, SR1, SR1, SR1}
+    #define ALTI_MSK	{MSK1, MSK2, MSK3, MSK4}
+    #define ALTI_MSK64	{MSK2, MSK1, MSK4, MSK3}
+    #define ALTI_SL2_PERM	{3,21,21,21,7,0,1,2,11,4,5,6,15,8,9,10}
+    #define ALTI_SL2_PERM64	{3,4,5,6,7,29,29,29,11,12,13,14,15,0,1,2}
+    #define ALTI_SR2_PERM	{5,6,7,0,9,10,11,4,13,14,15,8,19,19,19,12}
+    #define ALTI_SR2_PERM64	{13,14,15,0,1,2,3,4,19,19,19,8,9,10,11,12}
+#endif	/* For OSX */
+#define IDSTR	"SFMT-44497:330-5-3-9-3:effffffb-dfbebfff-bfbf7bef-9ffd7bff"
+
+#endif /* SFMT_PARAMS44497_H */
diff --git a/deps/jemalloc/test/include/test/SFMT-params607.h b/deps/jemalloc/test/include/test/SFMT-params607.h
new file mode 100644
index 0000000..bc76485
--- /dev/null
+++ b/deps/jemalloc/test/include/test/SFMT-params607.h
@@ -0,0 +1,81 @@
+/*
+ * This file derives from SFMT 1.3.3
+ * (http://www.math.sci.hiroshima-u.ac.jp/~m-mat/MT/SFMT/index.html), which was
+ * released under the terms of the following license:
+ *
+ *   Copyright (c) 2006,2007 Mutsuo Saito, Makoto Matsumoto and Hiroshima
+ *   University. All rights reserved.
+ *
+ *   Redistribution and use in source and binary forms, with or without
+ *   modification, are permitted provided that the following conditions are
+ *   met:
+ *
+ *       * Redistributions of source code must retain the above copyright
+ *         notice, this list of conditions and the following disclaimer.
+ *       * Redistributions in binary form must reproduce the above
+ *         copyright notice, this list of conditions and the following
+ *         disclaimer in the documentation and/or other materials provided
+ *         with the distribution.
+ *       * Neither the name of the Hiroshima University nor the names of
+ *         its contributors may be used to endorse or promote products
+ *         derived from this software without specific prior written
+ *         permission.
+ *
+ *   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ *   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ *   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ *   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ *   OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ *   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ *   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ *   DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ *   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ *   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ *   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+#ifndef SFMT_PARAMS607_H
+#define SFMT_PARAMS607_H
+
+#define POS1	2
+#define SL1	15
+#define SL2	3
+#define SR1	13
+#define SR2	3
+#define MSK1	0xfdff37ffU
+#define MSK2	0xef7f3f7dU
+#define MSK3	0xff777b7dU
+#define MSK4	0x7ff7fb2fU
+#define PARITY1	0x00000001U
+#define PARITY2	0x00000000U
+#define PARITY3	0x00000000U
+#define PARITY4	0x5986f054U
+
+
+/* PARAMETERS FOR ALTIVEC */
+#if defined(__APPLE__)	/* For OSX */
+    #define ALTI_SL1	(vector unsigned int)(SL1, SL1, SL1, SL1)
+    #define ALTI_SR1	(vector unsigned int)(SR1, SR1, SR1, SR1)
+    #define ALTI_MSK	(vector unsigned int)(MSK1, MSK2, MSK3, MSK4)
+    #define ALTI_MSK64 \
+	(vector unsigned int)(MSK2, MSK1, MSK4, MSK3)
+    #define ALTI_SL2_PERM \
+	(vector unsigned char)(3,21,21,21,7,0,1,2,11,4,5,6,15,8,9,10)
+    #define ALTI_SL2_PERM64 \
+	(vector unsigned char)(3,4,5,6,7,29,29,29,11,12,13,14,15,0,1,2)
+    #define ALTI_SR2_PERM \
+	(vector unsigned char)(5,6,7,0,9,10,11,4,13,14,15,8,19,19,19,12)
+    #define ALTI_SR2_PERM64 \
+	(vector unsigned char)(13,14,15,0,1,2,3,4,19,19,19,8,9,10,11,12)
+#else	/* For OTHER OSs(Linux?) */
+    #define ALTI_SL1	{SL1, SL1, SL1, SL1}
+    #define ALTI_SR1	{SR1, SR1, SR1, SR1}
+    #define ALTI_MSK	{MSK1, MSK2, MSK3, MSK4}
+    #define ALTI_MSK64	{MSK2, MSK1, MSK4, MSK3}
+    #define ALTI_SL2_PERM	{3,21,21,21,7,0,1,2,11,4,5,6,15,8,9,10}
+    #define ALTI_SL2_PERM64	{3,4,5,6,7,29,29,29,11,12,13,14,15,0,1,2}
+    #define ALTI_SR2_PERM	{5,6,7,0,9,10,11,4,13,14,15,8,19,19,19,12}
+    #define ALTI_SR2_PERM64	{13,14,15,0,1,2,3,4,19,19,19,8,9,10,11,12}
+#endif	/* For OSX */
+#define IDSTR	"SFMT-607:2-15-3-13-3:fdff37ff-ef7f3f7d-ff777b7d-7ff7fb2f"
+
+#endif /* SFMT_PARAMS607_H */
diff --git a/deps/jemalloc/test/include/test/SFMT-params86243.h b/deps/jemalloc/test/include/test/SFMT-params86243.h
new file mode 100644
index 0000000..5e4d783
--- /dev/null
+++ b/deps/jemalloc/test/include/test/SFMT-params86243.h
@@ -0,0 +1,81 @@
+/*
+ * This file derives from SFMT 1.3.3
+ * (http://www.math.sci.hiroshima-u.ac.jp/~m-mat/MT/SFMT/index.html), which was
+ * released under the terms of the following license:
+ *
+ *   Copyright (c) 2006,2007 Mutsuo Saito, Makoto Matsumoto and Hiroshima
+ *   University. All rights reserved.
+ *
+ *   Redistribution and use in source and binary forms, with or without
+ *   modification, are permitted provided that the following conditions are
+ *   met:
+ *
+ *       * Redistributions of source code must retain the above copyright
+ *         notice, this list of conditions and the following disclaimer.
+ *       * Redistributions in binary form must reproduce the above
+ *         copyright notice, this list of conditions and the following
+ *         disclaimer in the documentation and/or other materials provided
+ *         with the distribution.
+ *       * Neither the name of the Hiroshima University nor the names of
+ *         its contributors may be used to endorse or promote products
+ *         derived from this software without specific prior written
+ *         permission.
+ *
+ *   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ *   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ *   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ *   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ *   OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ *   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ *   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ *   DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ *   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ *   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ *   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+#ifndef SFMT_PARAMS86243_H
+#define SFMT_PARAMS86243_H
+
+#define POS1	366
+#define SL1	6
+#define SL2	7
+#define SR1	19
+#define SR2	1
+#define MSK1	0xfdbffbffU
+#define MSK2	0xbff7ff3fU
+#define MSK3	0xfd77efffU
+#define MSK4	0xbf9ff3ffU
+#define PARITY1	0x00000001U
+#define PARITY2	0x00000000U
+#define PARITY3	0x00000000U
+#define PARITY4	0xe9528d85U
+
+
+/* PARAMETERS FOR ALTIVEC */
+#if defined(__APPLE__)	/* For OSX */
+    #define ALTI_SL1	(vector unsigned int)(SL1, SL1, SL1, SL1)
+    #define ALTI_SR1	(vector unsigned int)(SR1, SR1, SR1, SR1)
+    #define ALTI_MSK	(vector unsigned int)(MSK1, MSK2, MSK3, MSK4)
+    #define ALTI_MSK64 \
+	(vector unsigned int)(MSK2, MSK1, MSK4, MSK3)
+    #define ALTI_SL2_PERM \
+	(vector unsigned char)(25,25,25,25,3,25,25,25,7,0,1,2,11,4,5,6)
+    #define ALTI_SL2_PERM64 \
+	(vector unsigned char)(7,25,25,25,25,25,25,25,15,0,1,2,3,4,5,6)
+    #define ALTI_SR2_PERM \
+	(vector unsigned char)(7,0,1,2,11,4,5,6,15,8,9,10,17,12,13,14)
+    #define ALTI_SR2_PERM64 \
+	(vector unsigned char)(15,0,1,2,3,4,5,6,17,8,9,10,11,12,13,14)
+#else	/* For OTHER OSs(Linux?) */
+    #define ALTI_SL1	{SL1, SL1, SL1, SL1}
+    #define ALTI_SR1	{SR1, SR1, SR1, SR1}
+    #define ALTI_MSK	{MSK1, MSK2, MSK3, MSK4}
+    #define ALTI_MSK64	{MSK2, MSK1, MSK4, MSK3}
+    #define ALTI_SL2_PERM	{25,25,25,25,3,25,25,25,7,0,1,2,11,4,5,6}
+    #define ALTI_SL2_PERM64	{7,25,25,25,25,25,25,25,15,0,1,2,3,4,5,6}
+    #define ALTI_SR2_PERM	{7,0,1,2,11,4,5,6,15,8,9,10,17,12,13,14}
+    #define ALTI_SR2_PERM64	{15,0,1,2,3,4,5,6,17,8,9,10,11,12,13,14}
+#endif	/* For OSX */
+#define IDSTR	"SFMT-86243:366-6-7-19-1:fdbffbff-bff7ff3f-fd77efff-bf9ff3ff"
+
+#endif /* SFMT_PARAMS86243_H */
diff --git a/deps/jemalloc/test/include/test/SFMT-sse2.h b/deps/jemalloc/test/include/test/SFMT-sse2.h
new file mode 100644
index 0000000..169ad55
--- /dev/null
+++ b/deps/jemalloc/test/include/test/SFMT-sse2.h
@@ -0,0 +1,157 @@
+/*
+ * This file derives from SFMT 1.3.3
+ * (http://www.math.sci.hiroshima-u.ac.jp/~m-mat/MT/SFMT/index.html), which was
+ * released under the terms of the following license:
+ *
+ *   Copyright (c) 2006,2007 Mutsuo Saito, Makoto Matsumoto and Hiroshima
+ *   University. All rights reserved.
+ *
+ *   Redistribution and use in source and binary forms, with or without
+ *   modification, are permitted provided that the following conditions are
+ *   met:
+ *
+ *       * Redistributions of source code must retain the above copyright
+ *         notice, this list of conditions and the following disclaimer.
+ *       * Redistributions in binary form must reproduce the above
+ *         copyright notice, this list of conditions and the following
+ *         disclaimer in the documentation and/or other materials provided
+ *         with the distribution.
+ *       * Neither the name of the Hiroshima University nor the names of
+ *         its contributors may be used to endorse or promote products
+ *         derived from this software without specific prior written
+ *         permission.
+ *
+ *   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ *   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ *   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ *   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ *   OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ *   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ *   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ *   DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ *   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ *   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ *   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+/**
+ * @file  SFMT-sse2.h
+ * @brief SIMD oriented Fast Mersenne Twister(SFMT) for Intel SSE2
+ *
+ * @author Mutsuo Saito (Hiroshima University)
+ * @author Makoto Matsumoto (Hiroshima University)
+ *
+ * @note We assume LITTLE ENDIAN in this file
+ *
+ * Copyright (C) 2006, 2007 Mutsuo Saito, Makoto Matsumoto and Hiroshima
+ * University. All rights reserved.
+ *
+ * The new BSD License is applied to this software, see LICENSE.txt
+ */
+
+#ifndef SFMT_SSE2_H
+#define SFMT_SSE2_H
+
+/**
+ * This function represents the recursion formula.
+ * @param a a 128-bit part of the interal state array
+ * @param b a 128-bit part of the interal state array
+ * @param c a 128-bit part of the interal state array
+ * @param d a 128-bit part of the interal state array
+ * @param mask 128-bit mask
+ * @return output
+ */
+JEMALLOC_ALWAYS_INLINE __m128i mm_recursion(__m128i *a, __m128i *b,
+				   __m128i c, __m128i d, __m128i mask) {
+    __m128i v, x, y, z;
+
+    x = _mm_load_si128(a);
+    y = _mm_srli_epi32(*b, SR1);
+    z = _mm_srli_si128(c, SR2);
+    v = _mm_slli_epi32(d, SL1);
+    z = _mm_xor_si128(z, x);
+    z = _mm_xor_si128(z, v);
+    x = _mm_slli_si128(x, SL2);
+    y = _mm_and_si128(y, mask);
+    z = _mm_xor_si128(z, x);
+    z = _mm_xor_si128(z, y);
+    return z;
+}
+
+/**
+ * This function fills the internal state array with pseudorandom
+ * integers.
+ */
+static inline void gen_rand_all(sfmt_t *ctx) {
+    int i;
+    __m128i r, r1, r2, mask;
+    mask = _mm_set_epi32(MSK4, MSK3, MSK2, MSK1);
+
+    r1 = _mm_load_si128(&ctx->sfmt[N - 2].si);
+    r2 = _mm_load_si128(&ctx->sfmt[N - 1].si);
+    for (i = 0; i < N - POS1; i++) {
+	r = mm_recursion(&ctx->sfmt[i].si, &ctx->sfmt[i + POS1].si, r1, r2,
+	  mask);
+	_mm_store_si128(&ctx->sfmt[i].si, r);
+	r1 = r2;
+	r2 = r;
+    }
+    for (; i < N; i++) {
+	r = mm_recursion(&ctx->sfmt[i].si, &ctx->sfmt[i + POS1 - N].si, r1, r2,
+	  mask);
+	_mm_store_si128(&ctx->sfmt[i].si, r);
+	r1 = r2;
+	r2 = r;
+    }
+}
+
+/**
+ * This function fills the user-specified array with pseudorandom
+ * integers.
+ *
+ * @param array an 128-bit array to be filled by pseudorandom numbers.
+ * @param size number of 128-bit pesudorandom numbers to be generated.
+ */
+static inline void gen_rand_array(sfmt_t *ctx, w128_t *array, int size) {
+    int i, j;
+    __m128i r, r1, r2, mask;
+    mask = _mm_set_epi32(MSK4, MSK3, MSK2, MSK1);
+
+    r1 = _mm_load_si128(&ctx->sfmt[N - 2].si);
+    r2 = _mm_load_si128(&ctx->sfmt[N - 1].si);
+    for (i = 0; i < N - POS1; i++) {
+	r = mm_recursion(&ctx->sfmt[i].si, &ctx->sfmt[i + POS1].si, r1, r2,
+	  mask);
+	_mm_store_si128(&array[i].si, r);
+	r1 = r2;
+	r2 = r;
+    }
+    for (; i < N; i++) {
+	r = mm_recursion(&ctx->sfmt[i].si, &array[i + POS1 - N].si, r1, r2,
+	  mask);
+	_mm_store_si128(&array[i].si, r);
+	r1 = r2;
+	r2 = r;
+    }
+    /* main loop */
+    for (; i < size - N; i++) {
+	r = mm_recursion(&array[i - N].si, &array[i + POS1 - N].si, r1, r2,
+			 mask);
+	_mm_store_si128(&array[i].si, r);
+	r1 = r2;
+	r2 = r;
+    }
+    for (j = 0; j < 2 * N - size; j++) {
+	r = _mm_load_si128(&array[j + size - N].si);
+	_mm_store_si128(&ctx->sfmt[j].si, r);
+    }
+    for (; i < size; i++) {
+	r = mm_recursion(&array[i - N].si, &array[i + POS1 - N].si, r1, r2,
+			 mask);
+	_mm_store_si128(&array[i].si, r);
+	_mm_store_si128(&ctx->sfmt[j++].si, r);
+	r1 = r2;
+	r2 = r;
+    }
+}
+
+#endif
diff --git a/deps/jemalloc/test/include/test/SFMT.h b/deps/jemalloc/test/include/test/SFMT.h
new file mode 100644
index 0000000..863fc55
--- /dev/null
+++ b/deps/jemalloc/test/include/test/SFMT.h
@@ -0,0 +1,146 @@
+/*
+ * This file derives from SFMT 1.3.3
+ * (http://www.math.sci.hiroshima-u.ac.jp/~m-mat/MT/SFMT/index.html), which was
+ * released under the terms of the following license:
+ *
+ *   Copyright (c) 2006,2007 Mutsuo Saito, Makoto Matsumoto and Hiroshima
+ *   University. All rights reserved.
+ *
+ *   Redistribution and use in source and binary forms, with or without
+ *   modification, are permitted provided that the following conditions are
+ *   met:
+ *
+ *       * Redistributions of source code must retain the above copyright
+ *         notice, this list of conditions and the following disclaimer.
+ *       * Redistributions in binary form must reproduce the above
+ *         copyright notice, this list of conditions and the following
+ *         disclaimer in the documentation and/or other materials provided
+ *         with the distribution.
+ *       * Neither the name of the Hiroshima University nor the names of
+ *         its contributors may be used to endorse or promote products
+ *         derived from this software without specific prior written
+ *         permission.
+ *
+ *   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ *   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ *   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ *   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ *   OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ *   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ *   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ *   DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ *   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ *   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ *   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+/** 
+ * @file SFMT.h 
+ *
+ * @brief SIMD oriented Fast Mersenne Twister(SFMT) pseudorandom
+ * number generator
+ *
+ * @author Mutsuo Saito (Hiroshima University)
+ * @author Makoto Matsumoto (Hiroshima University)
+ *
+ * Copyright (C) 2006, 2007 Mutsuo Saito, Makoto Matsumoto and Hiroshima
+ * University. All rights reserved.
+ *
+ * The new BSD License is applied to this software.
+ * see LICENSE.txt
+ *
+ * @note We assume that your system has inttypes.h.  If your system
+ * doesn't have inttypes.h, you have to typedef uint32_t and uint64_t,
+ * and you have to define PRIu64 and PRIx64 in this file as follows:
+ * @verbatim
+ typedef unsigned int uint32_t
+ typedef unsigned long long uint64_t  
+ #define PRIu64 "llu"
+ #define PRIx64 "llx"
+@endverbatim
+ * uint32_t must be exactly 32-bit unsigned integer type (no more, no
+ * less), and uint64_t must be exactly 64-bit unsigned integer type.
+ * PRIu64 and PRIx64 are used for printf function to print 64-bit
+ * unsigned int and 64-bit unsigned int in hexadecimal format.
+ */
+
+#ifndef SFMT_H
+#define SFMT_H
+
+typedef struct sfmt_s sfmt_t;
+
+uint32_t gen_rand32(sfmt_t *ctx);
+uint32_t gen_rand32_range(sfmt_t *ctx, uint32_t limit);
+uint64_t gen_rand64(sfmt_t *ctx);
+uint64_t gen_rand64_range(sfmt_t *ctx, uint64_t limit);
+void fill_array32(sfmt_t *ctx, uint32_t *array, int size);
+void fill_array64(sfmt_t *ctx, uint64_t *array, int size);
+sfmt_t *init_gen_rand(uint32_t seed);
+sfmt_t *init_by_array(uint32_t *init_key, int key_length);
+void fini_gen_rand(sfmt_t *ctx);
+const char *get_idstring(void);
+int get_min_array_size32(void);
+int get_min_array_size64(void);
+
+/* These real versions are due to Isaku Wada */
+/** generates a random number on [0,1]-real-interval */
+static inline double to_real1(uint32_t v) {
+    return v * (1.0/4294967295.0); 
+    /* divided by 2^32-1 */ 
+}
+
+/** generates a random number on [0,1]-real-interval */
+static inline double genrand_real1(sfmt_t *ctx) {
+    return to_real1(gen_rand32(ctx));
+}
+
+/** generates a random number on [0,1)-real-interval */
+static inline double to_real2(uint32_t v) {
+    return v * (1.0/4294967296.0); 
+    /* divided by 2^32 */
+}
+
+/** generates a random number on [0,1)-real-interval */
+static inline double genrand_real2(sfmt_t *ctx) {
+    return to_real2(gen_rand32(ctx));
+}
+
+/** generates a random number on (0,1)-real-interval */
+static inline double to_real3(uint32_t v) {
+    return (((double)v) + 0.5)*(1.0/4294967296.0); 
+    /* divided by 2^32 */
+}
+
+/** generates a random number on (0,1)-real-interval */
+static inline double genrand_real3(sfmt_t *ctx) {
+    return to_real3(gen_rand32(ctx));
+}
+/** These real versions are due to Isaku Wada */
+
+/** generates a random number on [0,1) with 53-bit resolution*/
+static inline double to_res53(uint64_t v) {
+    return v * (1.0/18446744073709551616.0L);
+}
+
+/** generates a random number on [0,1) with 53-bit resolution from two
+ * 32 bit integers */
+static inline double to_res53_mix(uint32_t x, uint32_t y) {
+    return to_res53(x | ((uint64_t)y << 32));
+}
+
+/** generates a random number on [0,1) with 53-bit resolution
+ */
+static inline double genrand_res53(sfmt_t *ctx) {
+    return to_res53(gen_rand64(ctx));
+}
+
+/** generates a random number on [0,1) with 53-bit resolution
+    using 32bit integer.
+ */
+static inline double genrand_res53_mix(sfmt_t *ctx) {
+    uint32_t x, y;
+
+    x = gen_rand32(ctx);
+    y = gen_rand32(ctx);
+    return to_res53_mix(x, y);
+}
+#endif
diff --git a/deps/jemalloc/test/include/test/arena_util.h b/deps/jemalloc/test/include/test/arena_util.h
new file mode 100644
index 0000000..9a41dac
--- /dev/null
+++ b/deps/jemalloc/test/include/test/arena_util.h
@@ -0,0 +1,155 @@
+static inline unsigned
+do_arena_create(ssize_t dirty_decay_ms, ssize_t muzzy_decay_ms) {
+	unsigned arena_ind;
+	size_t sz = sizeof(unsigned);
+	expect_d_eq(mallctl("arenas.create", (void *)&arena_ind, &sz, NULL, 0),
+	    0, "Unexpected mallctl() failure");
+	size_t mib[3];
+	size_t miblen = sizeof(mib)/sizeof(size_t);
+
+	expect_d_eq(mallctlnametomib("arena.0.dirty_decay_ms", mib, &miblen),
+	    0, "Unexpected mallctlnametomib() failure");
+	mib[1] = (size_t)arena_ind;
+	expect_d_eq(mallctlbymib(mib, miblen, NULL, NULL,
+	    (void *)&dirty_decay_ms, sizeof(dirty_decay_ms)), 0,
+	    "Unexpected mallctlbymib() failure");
+
+	expect_d_eq(mallctlnametomib("arena.0.muzzy_decay_ms", mib, &miblen),
+	    0, "Unexpected mallctlnametomib() failure");
+	mib[1] = (size_t)arena_ind;
+	expect_d_eq(mallctlbymib(mib, miblen, NULL, NULL,
+	    (void *)&muzzy_decay_ms, sizeof(muzzy_decay_ms)), 0,
+	    "Unexpected mallctlbymib() failure");
+
+	return arena_ind;
+}
+
+static inline void
+do_arena_destroy(unsigned arena_ind) {
+	/* 
+	 * For convenience, flush tcache in case there are cached items.
+	 * However not assert success since the tcache may be disabled.
+	 */
+	mallctl("thread.tcache.flush", NULL, NULL, NULL, 0);
+
+	size_t mib[3];
+	size_t miblen = sizeof(mib)/sizeof(size_t);
+	expect_d_eq(mallctlnametomib("arena.0.destroy", mib, &miblen), 0,
+	    "Unexpected mallctlnametomib() failure");
+	mib[1] = (size_t)arena_ind;
+	expect_d_eq(mallctlbymib(mib, miblen, NULL, NULL, NULL, 0), 0,
+	    "Unexpected mallctlbymib() failure");
+}
+
+static inline void
+do_epoch(void) {
+	uint64_t epoch = 1;
+	expect_d_eq(mallctl("epoch", NULL, NULL, (void *)&epoch, sizeof(epoch)),
+	    0, "Unexpected mallctl() failure");
+}
+
+static inline void
+do_purge(unsigned arena_ind) {
+	size_t mib[3];
+	size_t miblen = sizeof(mib)/sizeof(size_t);
+	expect_d_eq(mallctlnametomib("arena.0.purge", mib, &miblen), 0,
+	    "Unexpected mallctlnametomib() failure");
+	mib[1] = (size_t)arena_ind;
+	expect_d_eq(mallctlbymib(mib, miblen, NULL, NULL, NULL, 0), 0,
+	    "Unexpected mallctlbymib() failure");
+}
+
+static inline void
+do_decay(unsigned arena_ind) {
+	size_t mib[3];
+	size_t miblen = sizeof(mib)/sizeof(size_t);
+	expect_d_eq(mallctlnametomib("arena.0.decay", mib, &miblen), 0,
+	    "Unexpected mallctlnametomib() failure");
+	mib[1] = (size_t)arena_ind;
+	expect_d_eq(mallctlbymib(mib, miblen, NULL, NULL, NULL, 0), 0,
+	    "Unexpected mallctlbymib() failure");
+}
+
+static inline uint64_t
+get_arena_npurge_impl(const char *mibname, unsigned arena_ind) {
+	size_t mib[4];
+	size_t miblen = sizeof(mib)/sizeof(size_t);
+	expect_d_eq(mallctlnametomib(mibname, mib, &miblen), 0,
+	    "Unexpected mallctlnametomib() failure");
+	mib[2] = (size_t)arena_ind;
+	uint64_t npurge = 0;
+	size_t sz = sizeof(npurge);
+	expect_d_eq(mallctlbymib(mib, miblen, (void *)&npurge, &sz, NULL, 0),
+	    config_stats ? 0 : ENOENT, "Unexpected mallctlbymib() failure");
+	return npurge;
+}
+
+static inline uint64_t
+get_arena_dirty_npurge(unsigned arena_ind) {
+	do_epoch();
+	return get_arena_npurge_impl("stats.arenas.0.dirty_npurge", arena_ind);
+}
+
+static inline uint64_t
+get_arena_dirty_purged(unsigned arena_ind) {
+	do_epoch();
+	return get_arena_npurge_impl("stats.arenas.0.dirty_purged", arena_ind);
+}
+
+static inline uint64_t
+get_arena_muzzy_npurge(unsigned arena_ind) {
+	do_epoch();
+	return get_arena_npurge_impl("stats.arenas.0.muzzy_npurge", arena_ind);
+}
+
+static inline uint64_t
+get_arena_npurge(unsigned arena_ind) {
+	do_epoch();
+	return get_arena_npurge_impl("stats.arenas.0.dirty_npurge", arena_ind) +
+	    get_arena_npurge_impl("stats.arenas.0.muzzy_npurge", arena_ind);
+}
+
+static inline size_t
+get_arena_pdirty(unsigned arena_ind) {
+	do_epoch();
+	size_t mib[4];
+	size_t miblen = sizeof(mib)/sizeof(size_t);
+	expect_d_eq(mallctlnametomib("stats.arenas.0.pdirty", mib, &miblen), 0,
+	    "Unexpected mallctlnametomib() failure");
+	mib[2] = (size_t)arena_ind;
+	size_t pdirty;
+	size_t sz = sizeof(pdirty);
+	expect_d_eq(mallctlbymib(mib, miblen, (void *)&pdirty, &sz, NULL, 0), 0,
+	    "Unexpected mallctlbymib() failure");
+	return pdirty;
+}
+
+static inline size_t
+get_arena_pmuzzy(unsigned arena_ind) {
+	do_epoch();
+	size_t mib[4];
+	size_t miblen = sizeof(mib)/sizeof(size_t);
+	expect_d_eq(mallctlnametomib("stats.arenas.0.pmuzzy", mib, &miblen), 0,
+	    "Unexpected mallctlnametomib() failure");
+	mib[2] = (size_t)arena_ind;
+	size_t pmuzzy;
+	size_t sz = sizeof(pmuzzy);
+	expect_d_eq(mallctlbymib(mib, miblen, (void *)&pmuzzy, &sz, NULL, 0), 0,
+	    "Unexpected mallctlbymib() failure");
+	return pmuzzy;
+}
+
+static inline void *
+do_mallocx(size_t size, int flags) {
+	void *p = mallocx(size, flags);
+	expect_ptr_not_null(p, "Unexpected mallocx() failure");
+	return p;
+}
+
+static inline void
+generate_dirty(unsigned arena_ind, size_t size) {
+	int flags = MALLOCX_ARENA(arena_ind) | MALLOCX_TCACHE_NONE;
+	void *p = do_mallocx(size, flags);
+	dallocx(p, flags);
+}
+
diff --git a/deps/jemalloc/test/include/test/bench.h b/deps/jemalloc/test/include/test/bench.h
new file mode 100644
index 0000000..0397c94
--- /dev/null
+++ b/deps/jemalloc/test/include/test/bench.h
@@ -0,0 +1,60 @@
+static inline void
+time_func(timedelta_t *timer, uint64_t nwarmup, uint64_t niter,
+    void (*func)(void)) {
+	uint64_t i;
+
+	for (i = 0; i < nwarmup; i++) {
+		func();
+	}
+	timer_start(timer);
+	for (i = 0; i < niter; i++) {
+		func();
+	}
+	timer_stop(timer);
+}
+
+#define FMT_NSECS_BUF_SIZE 100
+/* Print nanoseconds / iter into the buffer "buf". */
+static inline void
+fmt_nsecs(uint64_t usec, uint64_t iters, char *buf) {
+	uint64_t nsec = usec * 1000;
+	/* We'll display 3 digits after the decimal point. */
+	uint64_t nsec1000 = nsec * 1000;
+	uint64_t nsecs_per_iter1000 = nsec1000 / iters;
+	uint64_t intpart = nsecs_per_iter1000 / 1000;
+	uint64_t fracpart = nsecs_per_iter1000 % 1000;
+	malloc_snprintf(buf, FMT_NSECS_BUF_SIZE, "%"FMTu64".%03"FMTu64, intpart,
+	    fracpart);
+}
+
+static inline void
+compare_funcs(uint64_t nwarmup, uint64_t niter, const char *name_a,
+    void (*func_a), const char *name_b, void (*func_b)) {
+	timedelta_t timer_a, timer_b;
+	char ratio_buf[6];
+	void *p;
+
+	p = mallocx(1, 0);
+	if (p == NULL) {
+		test_fail("Unexpected mallocx() failure");
+		return;
+	}
+
+	time_func(&timer_a, nwarmup, niter, func_a);
+	time_func(&timer_b, nwarmup, niter, func_b);
+
+	uint64_t usec_a = timer_usec(&timer_a);
+	char buf_a[FMT_NSECS_BUF_SIZE];
+	fmt_nsecs(usec_a, niter, buf_a);
+
+	uint64_t usec_b = timer_usec(&timer_b);
+	char buf_b[FMT_NSECS_BUF_SIZE];
+	fmt_nsecs(usec_b, niter, buf_b);
+
+	timer_ratio(&timer_a, &timer_b, ratio_buf, sizeof(ratio_buf));
+	malloc_printf("%"FMTu64" iterations, %s=%"FMTu64"us (%s ns/iter), "
+	    "%s=%"FMTu64"us (%s ns/iter), ratio=1:%s\n",
+	    niter, name_a, usec_a, buf_a, name_b, usec_b, buf_b, ratio_buf);
+
+	dallocx(p, 0);
+}
diff --git a/deps/jemalloc/test/include/test/bgthd.h b/deps/jemalloc/test/include/test/bgthd.h
new file mode 100644
index 0000000..4fa2395
--- /dev/null
+++ b/deps/jemalloc/test/include/test/bgthd.h
@@ -0,0 +1,17 @@
+/*
+ * Shared utility for checking if background_thread is enabled, which affects
+ * the purging behavior and assumptions in some tests.
+ */
+
+static inline bool
+is_background_thread_enabled(void) {
+	bool enabled;
+	size_t sz = sizeof(bool);
+	int ret = mallctl("background_thread", (void *)&enabled, &sz, NULL,0);
+	if (ret == ENOENT) {
+		return false;
+	}
+	assert_d_eq(ret, 0, "Unexpected mallctl error");
+
+	return enabled;
+}
diff --git a/deps/jemalloc/test/include/test/btalloc.h b/deps/jemalloc/test/include/test/btalloc.h
new file mode 100644
index 0000000..8f34599
--- /dev/null
+++ b/deps/jemalloc/test/include/test/btalloc.h
@@ -0,0 +1,30 @@
+/* btalloc() provides a mechanism for allocating via permuted backtraces. */
+void	*btalloc(size_t size, unsigned bits);
+
+#define btalloc_n_proto(n)						\
+void	*btalloc_##n(size_t size, unsigned bits);
+btalloc_n_proto(0)
+btalloc_n_proto(1)
+
+#define btalloc_n_gen(n)						\
+void *									\
+btalloc_##n(size_t size, unsigned bits) {				\
+	void *p;							\
+									\
+	if (bits == 0) {						\
+		p = mallocx(size, 0);					\
+	} else {							\
+		switch (bits & 0x1U) {					\
+		case 0:							\
+			p = (btalloc_0(size, bits >> 1));		\
+			break;						\
+		case 1:							\
+			p = (btalloc_1(size, bits >> 1));		\
+			break;						\
+		default: not_reached();					\
+		}							\
+	}								\
+	/* Intentionally sabotage tail call optimization. */		\
+	expect_ptr_not_null(p, "Unexpected mallocx() failure");		\
+	return p;							\
+}
diff --git a/deps/jemalloc/test/include/test/extent_hooks.h b/deps/jemalloc/test/include/test/extent_hooks.h
new file mode 100644
index 0000000..aad0a46
--- /dev/null
+++ b/deps/jemalloc/test/include/test/extent_hooks.h
@@ -0,0 +1,289 @@
+/*
+ * Boilerplate code used for testing extent hooks via interception and
+ * passthrough.
+ */
+
+static void	*extent_alloc_hook(extent_hooks_t *extent_hooks, void *new_addr,
+    size_t size, size_t alignment, bool *zero, bool *commit,
+    unsigned arena_ind);
+static bool	extent_dalloc_hook(extent_hooks_t *extent_hooks, void *addr,
+    size_t size, bool committed, unsigned arena_ind);
+static void	extent_destroy_hook(extent_hooks_t *extent_hooks, void *addr,
+    size_t size, bool committed, unsigned arena_ind);
+static bool	extent_commit_hook(extent_hooks_t *extent_hooks, void *addr,
+    size_t size, size_t offset, size_t length, unsigned arena_ind);
+static bool	extent_decommit_hook(extent_hooks_t *extent_hooks, void *addr,
+    size_t size, size_t offset, size_t length, unsigned arena_ind);
+static bool	extent_purge_lazy_hook(extent_hooks_t *extent_hooks, void *addr,
+    size_t size, size_t offset, size_t length, unsigned arena_ind);
+static bool	extent_purge_forced_hook(extent_hooks_t *extent_hooks,
+    void *addr, size_t size, size_t offset, size_t length, unsigned arena_ind);
+static bool	extent_split_hook(extent_hooks_t *extent_hooks, void *addr,
+    size_t size, size_t size_a, size_t size_b, bool committed,
+    unsigned arena_ind);
+static bool	extent_merge_hook(extent_hooks_t *extent_hooks, void *addr_a,
+    size_t size_a, void *addr_b, size_t size_b, bool committed,
+    unsigned arena_ind);
+
+static extent_hooks_t *default_hooks;
+static extent_hooks_t hooks = {
+	extent_alloc_hook,
+	extent_dalloc_hook,
+	extent_destroy_hook,
+	extent_commit_hook,
+	extent_decommit_hook,
+	extent_purge_lazy_hook,
+	extent_purge_forced_hook,
+	extent_split_hook,
+	extent_merge_hook
+};
+
+/* Control whether hook functions pass calls through to default hooks. */
+static bool try_alloc = true;
+static bool try_dalloc = true;
+static bool try_destroy = true;
+static bool try_commit = true;
+static bool try_decommit = true;
+static bool try_purge_lazy = true;
+static bool try_purge_forced = true;
+static bool try_split = true;
+static bool try_merge = true;
+
+/* Set to false prior to operations, then introspect after operations. */
+static bool called_alloc;
+static bool called_dalloc;
+static bool called_destroy;
+static bool called_commit;
+static bool called_decommit;
+static bool called_purge_lazy;
+static bool called_purge_forced;
+static bool called_split;
+static bool called_merge;
+
+/* Set to false prior to operations, then introspect after operations. */
+static bool did_alloc;
+static bool did_dalloc;
+static bool did_destroy;
+static bool did_commit;
+static bool did_decommit;
+static bool did_purge_lazy;
+static bool did_purge_forced;
+static bool did_split;
+static bool did_merge;
+
+#if 0
+#  define TRACE_HOOK(fmt, ...) malloc_printf(fmt, __VA_ARGS__)
+#else
+#  define TRACE_HOOK(fmt, ...)
+#endif
+
+static void *
+extent_alloc_hook(extent_hooks_t *extent_hooks, void *new_addr, size_t size,
+    size_t alignment, bool *zero, bool *commit, unsigned arena_ind) {
+	void *ret;
+
+	TRACE_HOOK("%s(extent_hooks=%p, new_addr=%p, size=%zu, alignment=%zu, "
+	    "*zero=%s, *commit=%s, arena_ind=%u)\n", __func__, extent_hooks,
+	    new_addr, size, alignment, *zero ?  "true" : "false", *commit ?
+	    "true" : "false", arena_ind);
+	expect_ptr_eq(extent_hooks, &hooks,
+	    "extent_hooks should be same as pointer used to set hooks");
+	expect_ptr_eq(extent_hooks->alloc, extent_alloc_hook,
+	    "Wrong hook function");
+	called_alloc = true;
+	if (!try_alloc) {
+		return NULL;
+	}
+	ret = default_hooks->alloc(default_hooks, new_addr, size, alignment,
+	    zero, commit, 0);
+	did_alloc = (ret != NULL);
+	return ret;
+}
+
+static bool
+extent_dalloc_hook(extent_hooks_t *extent_hooks, void *addr, size_t size,
+    bool committed, unsigned arena_ind) {
+	bool err;
+
+	TRACE_HOOK("%s(extent_hooks=%p, addr=%p, size=%zu, committed=%s, "
+	    "arena_ind=%u)\n", __func__, extent_hooks, addr, size, committed ?
+	    "true" : "false", arena_ind);
+	expect_ptr_eq(extent_hooks, &hooks,
+	    "extent_hooks should be same as pointer used to set hooks");
+	expect_ptr_eq(extent_hooks->dalloc, extent_dalloc_hook,
+	    "Wrong hook function");
+	called_dalloc = true;
+	if (!try_dalloc) {
+		return true;
+	}
+	err = default_hooks->dalloc(default_hooks, addr, size, committed, 0);
+	did_dalloc = !err;
+	return err;
+}
+
+static void
+extent_destroy_hook(extent_hooks_t *extent_hooks, void *addr, size_t size,
+    bool committed, unsigned arena_ind) {
+	TRACE_HOOK("%s(extent_hooks=%p, addr=%p, size=%zu, committed=%s, "
+	    "arena_ind=%u)\n", __func__, extent_hooks, addr, size, committed ?
+	    "true" : "false", arena_ind);
+	expect_ptr_eq(extent_hooks, &hooks,
+	    "extent_hooks should be same as pointer used to set hooks");
+	expect_ptr_eq(extent_hooks->destroy, extent_destroy_hook,
+	    "Wrong hook function");
+	called_destroy = true;
+	if (!try_destroy) {
+		return;
+	}
+	default_hooks->destroy(default_hooks, addr, size, committed, 0);
+	did_destroy = true;
+}
+
+static bool
+extent_commit_hook(extent_hooks_t *extent_hooks, void *addr, size_t size,
+    size_t offset, size_t length, unsigned arena_ind) {
+	bool err;
+
+	TRACE_HOOK("%s(extent_hooks=%p, addr=%p, size=%zu, offset=%zu, "
+	    "length=%zu, arena_ind=%u)\n", __func__, extent_hooks, addr, size,
+	    offset, length, arena_ind);
+	expect_ptr_eq(extent_hooks, &hooks,
+	    "extent_hooks should be same as pointer used to set hooks");
+	expect_ptr_eq(extent_hooks->commit, extent_commit_hook,
+	    "Wrong hook function");
+	called_commit = true;
+	if (!try_commit) {
+		return true;
+	}
+	err = default_hooks->commit(default_hooks, addr, size, offset, length,
+	    0);
+	did_commit = !err;
+	return err;
+}
+
+static bool
+extent_decommit_hook(extent_hooks_t *extent_hooks, void *addr, size_t size,
+    size_t offset, size_t length, unsigned arena_ind) {
+	bool err;
+
+	TRACE_HOOK("%s(extent_hooks=%p, addr=%p, size=%zu, offset=%zu, "
+	    "length=%zu, arena_ind=%u)\n", __func__, extent_hooks, addr, size,
+	    offset, length, arena_ind);
+	expect_ptr_eq(extent_hooks, &hooks,
+	    "extent_hooks should be same as pointer used to set hooks");
+	expect_ptr_eq(extent_hooks->decommit, extent_decommit_hook,
+	    "Wrong hook function");
+	called_decommit = true;
+	if (!try_decommit) {
+		return true;
+	}
+	err = default_hooks->decommit(default_hooks, addr, size, offset, length,
+	    0);
+	did_decommit = !err;
+	return err;
+}
+
+static bool
+extent_purge_lazy_hook(extent_hooks_t *extent_hooks, void *addr, size_t size,
+    size_t offset, size_t length, unsigned arena_ind) {
+	bool err;
+
+	TRACE_HOOK("%s(extent_hooks=%p, addr=%p, size=%zu, offset=%zu, "
+	    "length=%zu arena_ind=%u)\n", __func__, extent_hooks, addr, size,
+	    offset, length, arena_ind);
+	expect_ptr_eq(extent_hooks, &hooks,
+	    "extent_hooks should be same as pointer used to set hooks");
+	expect_ptr_eq(extent_hooks->purge_lazy, extent_purge_lazy_hook,
+	    "Wrong hook function");
+	called_purge_lazy = true;
+	if (!try_purge_lazy) {
+		return true;
+	}
+	err = default_hooks->purge_lazy == NULL ||
+	    default_hooks->purge_lazy(default_hooks, addr, size, offset, length,
+	    0);
+	did_purge_lazy = !err;
+	return err;
+}
+
+static bool
+extent_purge_forced_hook(extent_hooks_t *extent_hooks, void *addr, size_t size,
+    size_t offset, size_t length, unsigned arena_ind) {
+	bool err;
+
+	TRACE_HOOK("%s(extent_hooks=%p, addr=%p, size=%zu, offset=%zu, "
+	    "length=%zu arena_ind=%u)\n", __func__, extent_hooks, addr, size,
+	    offset, length, arena_ind);
+	expect_ptr_eq(extent_hooks, &hooks,
+	    "extent_hooks should be same as pointer used to set hooks");
+	expect_ptr_eq(extent_hooks->purge_forced, extent_purge_forced_hook,
+	    "Wrong hook function");
+	called_purge_forced = true;
+	if (!try_purge_forced) {
+		return true;
+	}
+	err = default_hooks->purge_forced == NULL ||
+	    default_hooks->purge_forced(default_hooks, addr, size, offset,
+	    length, 0);
+	did_purge_forced = !err;
+	return err;
+}
+
+static bool
+extent_split_hook(extent_hooks_t *extent_hooks, void *addr, size_t size,
+    size_t size_a, size_t size_b, bool committed, unsigned arena_ind) {
+	bool err;
+
+	TRACE_HOOK("%s(extent_hooks=%p, addr=%p, size=%zu, size_a=%zu, "
+	    "size_b=%zu, committed=%s, arena_ind=%u)\n", __func__, extent_hooks,
+	    addr, size, size_a, size_b, committed ? "true" : "false",
+	    arena_ind);
+	expect_ptr_eq(extent_hooks, &hooks,
+	    "extent_hooks should be same as pointer used to set hooks");
+	expect_ptr_eq(extent_hooks->split, extent_split_hook,
+	    "Wrong hook function");
+	called_split = true;
+	if (!try_split) {
+		return true;
+	}
+	err = (default_hooks->split == NULL ||
+	    default_hooks->split(default_hooks, addr, size, size_a, size_b,
+	    committed, 0));
+	did_split = !err;
+	return err;
+}
+
+static bool
+extent_merge_hook(extent_hooks_t *extent_hooks, void *addr_a, size_t size_a,
+    void *addr_b, size_t size_b, bool committed, unsigned arena_ind) {
+	bool err;
+
+	TRACE_HOOK("%s(extent_hooks=%p, addr_a=%p, size_a=%zu, addr_b=%p "
+	    "size_b=%zu, committed=%s, arena_ind=%u)\n", __func__, extent_hooks,
+	    addr_a, size_a, addr_b, size_b, committed ? "true" : "false",
+	    arena_ind);
+	expect_ptr_eq(extent_hooks, &hooks,
+	    "extent_hooks should be same as pointer used to set hooks");
+	expect_ptr_eq(extent_hooks->merge, extent_merge_hook,
+	    "Wrong hook function");
+	expect_ptr_eq((void *)((uintptr_t)addr_a + size_a), addr_b,
+	    "Extents not mergeable");
+	called_merge = true;
+	if (!try_merge) {
+		return true;
+	}
+	err = (default_hooks->merge == NULL ||
+	    default_hooks->merge(default_hooks, addr_a, size_a, addr_b, size_b,
+	    committed, 0));
+	did_merge = !err;
+	return err;
+}
+
+static void
+extent_hooks_prep(void) {
+	size_t sz;
+
+	sz = sizeof(default_hooks);
+	expect_d_eq(mallctl("arena.0.extent_hooks", (void *)&default_hooks, &sz,
+	    NULL, 0), 0, "Unexpected mallctl() error");
+}
diff --git a/deps/jemalloc/test/include/test/jemalloc_test.h.in b/deps/jemalloc/test/include/test/jemalloc_test.h.in
new file mode 100644
index 0000000..3f8c0da
--- /dev/null
+++ b/deps/jemalloc/test/include/test/jemalloc_test.h.in
@@ -0,0 +1,180 @@
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include <limits.h>
+#ifndef SIZE_T_MAX
+#  define SIZE_T_MAX	SIZE_MAX
+#endif
+#include <stdlib.h>
+#include <stdarg.h>
+#include <stdbool.h>
+#include <errno.h>
+#include <math.h>
+#include <string.h>
+#ifdef _WIN32
+#  include "msvc_compat/strings.h"
+#endif
+
+#ifdef _WIN32
+#  include <windows.h>
+#  include "msvc_compat/windows_extra.h"
+#else
+#  include <pthread.h>
+#endif
+
+#include "test/jemalloc_test_defs.h"
+
+#if defined(JEMALLOC_OSATOMIC)
+#  include <libkern/OSAtomic.h>
+#endif
+
+#if defined(HAVE_ALTIVEC) && !defined(__APPLE__)
+#  include <altivec.h>
+#endif
+#ifdef HAVE_SSE2
+#  include <emmintrin.h>
+#endif
+
+/******************************************************************************/
+/*
+ * For unit tests and analytics tests, expose all public and private interfaces.
+ */
+#if defined(JEMALLOC_UNIT_TEST) || defined (JEMALLOC_ANALYZE_TEST)
+#  define JEMALLOC_JET
+#  define JEMALLOC_MANGLE
+#  include "jemalloc/internal/jemalloc_preamble.h"
+#  include "jemalloc/internal/jemalloc_internal_includes.h"
+
+/******************************************************************************/
+/*
+ * For integration tests, expose the public jemalloc interfaces, but only
+ * expose the minimum necessary internal utility code (to avoid re-implementing
+ * essentially identical code within the test infrastructure).
+ */
+#elif defined(JEMALLOC_INTEGRATION_TEST) || \
+    defined(JEMALLOC_INTEGRATION_CPP_TEST)
+#  define JEMALLOC_MANGLE
+#  include "jemalloc/jemalloc@install_suffix@.h"
+#  include "jemalloc/internal/jemalloc_internal_defs.h"
+#  include "jemalloc/internal/jemalloc_internal_macros.h"
+
+static const bool config_debug =
+#ifdef JEMALLOC_DEBUG
+    true
+#else
+    false
+#endif
+    ;
+
+#  define JEMALLOC_N(n) @private_namespace@##n
+#  include "jemalloc/internal/private_namespace.h"
+#  include "jemalloc/internal/test_hooks.h"
+
+/* Hermetic headers. */
+#  include "jemalloc/internal/assert.h"
+#  include "jemalloc/internal/malloc_io.h"
+#  include "jemalloc/internal/nstime.h"
+#  include "jemalloc/internal/util.h"
+
+/* Non-hermetic headers. */
+#  include "jemalloc/internal/qr.h"
+#  include "jemalloc/internal/ql.h"
+
+/******************************************************************************/
+/*
+ * For stress tests, expose the public jemalloc interfaces with name mangling
+ * so that they can be tested as e.g. malloc() and free().  Also expose the
+ * public jemalloc interfaces with jet_ prefixes, so that stress tests can use
+ * a separate allocator for their internal data structures.
+ */
+#elif defined(JEMALLOC_STRESS_TEST)
+#  include "jemalloc/jemalloc@install_suffix@.h"
+
+#  include "jemalloc/jemalloc_protos_jet.h"
+
+#  define JEMALLOC_JET
+#  include "jemalloc/internal/jemalloc_preamble.h"
+#  include "jemalloc/internal/jemalloc_internal_includes.h"
+#  include "jemalloc/internal/public_unnamespace.h"
+#  undef JEMALLOC_JET
+
+#  include "jemalloc/jemalloc_rename.h"
+#  define JEMALLOC_MANGLE
+#  ifdef JEMALLOC_STRESS_TESTLIB
+#    include "jemalloc/jemalloc_mangle_jet.h"
+#  else
+#    include "jemalloc/jemalloc_mangle.h"
+#  endif
+
+/******************************************************************************/
+/*
+ * This header does dangerous things, the effects of which only test code
+ * should be subject to.
+ */
+#else
+#  error "This header cannot be included outside a testing context"
+#endif
+
+/******************************************************************************/
+/*
+ * Common test utilities.
+ */
+#include "test/btalloc.h"
+#include "test/math.h"
+#include "test/mtx.h"
+#include "test/mq.h"
+#include "test/sleep.h"
+#include "test/test.h"
+#include "test/timer.h"
+#include "test/thd.h"
+#include "test/bgthd.h"
+#define MEXP 19937
+#include "test/SFMT.h"
+
+#ifndef JEMALLOC_HAVE_MALLOC_SIZE
+#define TEST_MALLOC_SIZE malloc_usable_size
+#else
+#define TEST_MALLOC_SIZE malloc_size
+#endif
+/******************************************************************************/
+/*
+ * Define always-enabled assertion macros, so that test assertions execute even
+ * if assertions are disabled in the library code.
+ */
+#undef assert
+#undef not_reached
+#undef not_implemented
+#undef expect_not_implemented
+
+#define assert(e) do {							\
+	if (!(e)) {							\
+		malloc_printf(						\
+		    "<jemalloc>: %s:%d: Failed assertion: \"%s\"\n",	\
+		    __FILE__, __LINE__, #e);				\
+		abort();						\
+	}								\
+} while (0)
+
+#define not_reached() do {						\
+	malloc_printf(							\
+	    "<jemalloc>: %s:%d: Unreachable code reached\n",		\
+	    __FILE__, __LINE__);					\
+	abort();							\
+} while (0)
+
+#define not_implemented() do {						\
+	malloc_printf("<jemalloc>: %s:%d: Not implemented\n",		\
+	    __FILE__, __LINE__);					\
+	abort();							\
+} while (0)
+
+#define expect_not_implemented(e) do {					\
+	if (!(e)) {							\
+		not_implemented();					\
+	}								\
+} while (0)
+
+#ifdef __cplusplus
+}
+#endif
diff --git a/deps/jemalloc/test/include/test/jemalloc_test_defs.h.in b/deps/jemalloc/test/include/test/jemalloc_test_defs.h.in
new file mode 100644
index 0000000..5cc8532
--- /dev/null
+++ b/deps/jemalloc/test/include/test/jemalloc_test_defs.h.in
@@ -0,0 +1,9 @@
+#include "jemalloc/internal/jemalloc_internal_defs.h"
+#include "jemalloc/internal/jemalloc_internal_decls.h"
+
+/*
+ * For use by SFMT.  configure.ac doesn't actually define HAVE_SSE2 because its
+ * dependencies are notoriously unportable in practice.
+ */
+#undef HAVE_SSE2
+#undef HAVE_ALTIVEC
diff --git a/deps/jemalloc/test/include/test/math.h b/deps/jemalloc/test/include/test/math.h
new file mode 100644
index 0000000..efba086
--- /dev/null
+++ b/deps/jemalloc/test/include/test/math.h
@@ -0,0 +1,306 @@
+/*
+ * Compute the natural log of Gamma(x), accurate to 10 decimal places.
+ *
+ * This implementation is based on:
+ *
+ *   Pike, M.C., I.D. Hill (1966) Algorithm 291: Logarithm of Gamma function
+ *   [S14].  Communications of the ACM 9(9):684.
+ */
+static inline double
+ln_gamma(double x) {
+	double f, z;
+
+	assert(x > 0.0);
+
+	if (x < 7.0) {
+		f = 1.0;
+		z = x;
+		while (z < 7.0) {
+			f *= z;
+			z += 1.0;
+		}
+		x = z;
+		f = -log(f);
+	} else {
+		f = 0.0;
+	}
+
+	z = 1.0 / (x * x);
+
+	return f + (x-0.5) * log(x) - x + 0.918938533204673 +
+	    (((-0.000595238095238 * z + 0.000793650793651) * z -
+	    0.002777777777778) * z + 0.083333333333333) / x;
+}
+
+/*
+ * Compute the incomplete Gamma ratio for [0..x], where p is the shape
+ * parameter, and ln_gamma_p is ln_gamma(p).
+ *
+ * This implementation is based on:
+ *
+ *   Bhattacharjee, G.P. (1970) Algorithm AS 32: The incomplete Gamma integral.
+ *   Applied Statistics 19:285-287.
+ */
+static inline double
+i_gamma(double x, double p, double ln_gamma_p) {
+	double acu, factor, oflo, gin, term, rn, a, b, an, dif;
+	double pn[6];
+	unsigned i;
+
+	assert(p > 0.0);
+	assert(x >= 0.0);
+
+	if (x == 0.0) {
+		return 0.0;
+	}
+
+	acu = 1.0e-10;
+	oflo = 1.0e30;
+	gin = 0.0;
+	factor = exp(p * log(x) - x - ln_gamma_p);
+
+	if (x <= 1.0 || x < p) {
+		/* Calculation by series expansion. */
+		gin = 1.0;
+		term = 1.0;
+		rn = p;
+
+		while (true) {
+			rn += 1.0;
+			term *= x / rn;
+			gin += term;
+			if (term <= acu) {
+				gin *= factor / p;
+				return gin;
+			}
+		}
+	} else {
+		/* Calculation by continued fraction. */
+		a = 1.0 - p;
+		b = a + x + 1.0;
+		term = 0.0;
+		pn[0] = 1.0;
+		pn[1] = x;
+		pn[2] = x + 1.0;
+		pn[3] = x * b;
+		gin = pn[2] / pn[3];
+
+		while (true) {
+			a += 1.0;
+			b += 2.0;
+			term += 1.0;
+			an = a * term;
+			for (i = 0; i < 2; i++) {
+				pn[i+4] = b * pn[i+2] - an * pn[i];
+			}
+			if (pn[5] != 0.0) {
+				rn = pn[4] / pn[5];
+				dif = fabs(gin - rn);
+				if (dif <= acu && dif <= acu * rn) {
+					gin = 1.0 - factor * gin;
+					return gin;
+				}
+				gin = rn;
+			}
+			for (i = 0; i < 4; i++) {
+				pn[i] = pn[i+2];
+			}
+
+			if (fabs(pn[4]) >= oflo) {
+				for (i = 0; i < 4; i++) {
+					pn[i] /= oflo;
+				}
+			}
+		}
+	}
+}
+
+/*
+ * Given a value p in [0..1] of the lower tail area of the normal distribution,
+ * compute the limit on the definite integral from [-inf..z] that satisfies p,
+ * accurate to 16 decimal places.
+ *
+ * This implementation is based on:
+ *
+ *   Wichura, M.J. (1988) Algorithm AS 241: The percentage points of the normal
+ *   distribution.  Applied Statistics 37(3):477-484.
+ */
+static inline double
+pt_norm(double p) {
+	double q, r, ret;
+
+	assert(p > 0.0 && p < 1.0);
+
+	q = p - 0.5;
+	if (fabs(q) <= 0.425) {
+		/* p close to 1/2. */
+		r = 0.180625 - q * q;
+		return q * (((((((2.5090809287301226727e3 * r +
+		    3.3430575583588128105e4) * r + 6.7265770927008700853e4) * r
+		    + 4.5921953931549871457e4) * r + 1.3731693765509461125e4) *
+		    r + 1.9715909503065514427e3) * r + 1.3314166789178437745e2)
+		    * r + 3.3871328727963666080e0) /
+		    (((((((5.2264952788528545610e3 * r +
+		    2.8729085735721942674e4) * r + 3.9307895800092710610e4) * r
+		    + 2.1213794301586595867e4) * r + 5.3941960214247511077e3) *
+		    r + 6.8718700749205790830e2) * r + 4.2313330701600911252e1)
+		    * r + 1.0);
+	} else {
+		if (q < 0.0) {
+			r = p;
+		} else {
+			r = 1.0 - p;
+		}
+		assert(r > 0.0);
+
+		r = sqrt(-log(r));
+		if (r <= 5.0) {
+			/* p neither close to 1/2 nor 0 or 1. */
+			r -= 1.6;
+			ret = ((((((((7.74545014278341407640e-4 * r +
+			    2.27238449892691845833e-2) * r +
+			    2.41780725177450611770e-1) * r +
+			    1.27045825245236838258e0) * r +
+			    3.64784832476320460504e0) * r +
+			    5.76949722146069140550e0) * r +
+			    4.63033784615654529590e0) * r +
+			    1.42343711074968357734e0) /
+			    (((((((1.05075007164441684324e-9 * r +
+			    5.47593808499534494600e-4) * r +
+			    1.51986665636164571966e-2)
+			    * r + 1.48103976427480074590e-1) * r +
+			    6.89767334985100004550e-1) * r +
+			    1.67638483018380384940e0) * r +
+			    2.05319162663775882187e0) * r + 1.0));
+		} else {
+			/* p near 0 or 1. */
+			r -= 5.0;
+			ret = ((((((((2.01033439929228813265e-7 * r +
+			    2.71155556874348757815e-5) * r +
+			    1.24266094738807843860e-3) * r +
+			    2.65321895265761230930e-2) * r +
+			    2.96560571828504891230e-1) * r +
+			    1.78482653991729133580e0) * r +
+			    5.46378491116411436990e0) * r +
+			    6.65790464350110377720e0) /
+			    (((((((2.04426310338993978564e-15 * r +
+			    1.42151175831644588870e-7) * r +
+			    1.84631831751005468180e-5) * r +
+			    7.86869131145613259100e-4) * r +
+			    1.48753612908506148525e-2) * r +
+			    1.36929880922735805310e-1) * r +
+			    5.99832206555887937690e-1)
+			    * r + 1.0));
+		}
+		if (q < 0.0) {
+			ret = -ret;
+		}
+		return ret;
+	}
+}
+
+/*
+ * Given a value p in [0..1] of the lower tail area of the Chi^2 distribution
+ * with df degrees of freedom, where ln_gamma_df_2 is ln_gamma(df/2.0), compute
+ * the upper limit on the definite integral from [0..z] that satisfies p,
+ * accurate to 12 decimal places.
+ *
+ * This implementation is based on:
+ *
+ *   Best, D.J., D.E. Roberts (1975) Algorithm AS 91: The percentage points of
+ *   the Chi^2 distribution.  Applied Statistics 24(3):385-388.
+ *
+ *   Shea, B.L. (1991) Algorithm AS R85: A remark on AS 91: The percentage
+ *   points of the Chi^2 distribution.  Applied Statistics 40(1):233-235.
+ */
+static inline double
+pt_chi2(double p, double df, double ln_gamma_df_2) {
+	double e, aa, xx, c, ch, a, q, p1, p2, t, x, b, s1, s2, s3, s4, s5, s6;
+	unsigned i;
+
+	assert(p >= 0.0 && p < 1.0);
+	assert(df > 0.0);
+
+	e = 5.0e-7;
+	aa = 0.6931471805;
+
+	xx = 0.5 * df;
+	c = xx - 1.0;
+
+	if (df < -1.24 * log(p)) {
+		/* Starting approximation for small Chi^2. */
+		ch = pow(p * xx * exp(ln_gamma_df_2 + xx * aa), 1.0 / xx);
+		if (ch - e < 0.0) {
+			return ch;
+		}
+	} else {
+		if (df > 0.32) {
+			x = pt_norm(p);
+			/*
+			 * Starting approximation using Wilson and Hilferty
+			 * estimate.
+			 */
+			p1 = 0.222222 / df;
+			ch = df * pow(x * sqrt(p1) + 1.0 - p1, 3.0);
+			/* Starting approximation for p tending to 1. */
+			if (ch > 2.2 * df + 6.0) {
+				ch = -2.0 * (log(1.0 - p) - c * log(0.5 * ch) +
+				    ln_gamma_df_2);
+			}
+		} else {
+			ch = 0.4;
+			a = log(1.0 - p);
+			while (true) {
+				q = ch;
+				p1 = 1.0 + ch * (4.67 + ch);
+				p2 = ch * (6.73 + ch * (6.66 + ch));
+				t = -0.5 + (4.67 + 2.0 * ch) / p1 - (6.73 + ch
+				    * (13.32 + 3.0 * ch)) / p2;
+				ch -= (1.0 - exp(a + ln_gamma_df_2 + 0.5 * ch +
+				    c * aa) * p2 / p1) / t;
+				if (fabs(q / ch - 1.0) - 0.01 <= 0.0) {
+					break;
+				}
+			}
+		}
+	}
+
+	for (i = 0; i < 20; i++) {
+		/* Calculation of seven-term Taylor series. */
+		q = ch;
+		p1 = 0.5 * ch;
+		if (p1 < 0.0) {
+			return -1.0;
+		}
+		p2 = p - i_gamma(p1, xx, ln_gamma_df_2);
+		t = p2 * exp(xx * aa + ln_gamma_df_2 + p1 - c * log(ch));
+		b = t / ch;
+		a = 0.5 * t - b * c;
+		s1 = (210.0 + a * (140.0 + a * (105.0 + a * (84.0 + a * (70.0 +
+		    60.0 * a))))) / 420.0;
+		s2 = (420.0 + a * (735.0 + a * (966.0 + a * (1141.0 + 1278.0 *
+		    a)))) / 2520.0;
+		s3 = (210.0 + a * (462.0 + a * (707.0 + 932.0 * a))) / 2520.0;
+		s4 = (252.0 + a * (672.0 + 1182.0 * a) + c * (294.0 + a *
+		    (889.0 + 1740.0 * a))) / 5040.0;
+		s5 = (84.0 + 264.0 * a + c * (175.0 + 606.0 * a)) / 2520.0;
+		s6 = (120.0 + c * (346.0 + 127.0 * c)) / 5040.0;
+		ch += t * (1.0 + 0.5 * t * s1 - b * c * (s1 - b * (s2 - b * (s3
+		    - b * (s4 - b * (s5 - b * s6))))));
+		if (fabs(q / ch - 1.0) <= e) {
+			break;
+		}
+	}
+
+	return ch;
+}
+
+/*
+ * Given a value p in [0..1] and Gamma distribution shape and scale parameters,
+ * compute the upper limit on the definite integral from [0..z] that satisfies
+ * p.
+ */
+static inline double
+pt_gamma(double p, double shape, double scale, double ln_gamma_shape) {
+	return pt_chi2(p, shape * 2.0, ln_gamma_shape) * 0.5 * scale;
+}
diff --git a/deps/jemalloc/test/include/test/mq.h b/deps/jemalloc/test/include/test/mq.h
new file mode 100644
index 0000000..5dc6486
--- /dev/null
+++ b/deps/jemalloc/test/include/test/mq.h
@@ -0,0 +1,107 @@
+#include "test/sleep.h"
+
+/*
+ * Simple templated message queue implementation that relies on only mutexes for
+ * synchronization (which reduces portability issues).  Given the following
+ * setup:
+ *
+ *   typedef struct mq_msg_s mq_msg_t;
+ *   struct mq_msg_s {
+ *           mq_msg(mq_msg_t) link;
+ *           [message data]
+ *   };
+ *   mq_gen(, mq_, mq_t, mq_msg_t, link)
+ *
+ * The API is as follows:
+ *
+ *   bool mq_init(mq_t *mq);
+ *   void mq_fini(mq_t *mq);
+ *   unsigned mq_count(mq_t *mq);
+ *   mq_msg_t *mq_tryget(mq_t *mq);
+ *   mq_msg_t *mq_get(mq_t *mq);
+ *   void mq_put(mq_t *mq, mq_msg_t *msg);
+ *
+ * The message queue linkage embedded in each message is to be treated as
+ * externally opaque (no need to initialize or clean up externally).  mq_fini()
+ * does not perform any cleanup of messages, since it knows nothing of their
+ * payloads.
+ */
+#define mq_msg(a_mq_msg_type)	ql_elm(a_mq_msg_type)
+
+#define mq_gen(a_attr, a_prefix, a_mq_type, a_mq_msg_type, a_field)	\
+typedef struct {							\
+	mtx_t			lock;					\
+	ql_head(a_mq_msg_type)	msgs;					\
+	unsigned		count;					\
+} a_mq_type;								\
+a_attr bool								\
+a_prefix##init(a_mq_type *mq) {						\
+									\
+	if (mtx_init(&mq->lock)) {					\
+		return true;						\
+	}								\
+	ql_new(&mq->msgs);						\
+	mq->count = 0;							\
+	return false;							\
+}									\
+a_attr void								\
+a_prefix##fini(a_mq_type *mq) {						\
+	mtx_fini(&mq->lock);						\
+}									\
+a_attr unsigned								\
+a_prefix##count(a_mq_type *mq) {					\
+	unsigned count;							\
+									\
+	mtx_lock(&mq->lock);						\
+	count = mq->count;						\
+	mtx_unlock(&mq->lock);						\
+	return count;							\
+}									\
+a_attr a_mq_msg_type *							\
+a_prefix##tryget(a_mq_type *mq) {					\
+	a_mq_msg_type *msg;						\
+									\
+	mtx_lock(&mq->lock);						\
+	msg = ql_first(&mq->msgs);					\
+	if (msg != NULL) {						\
+		ql_head_remove(&mq->msgs, a_mq_msg_type, a_field);	\
+		mq->count--;						\
+	}								\
+	mtx_unlock(&mq->lock);						\
+	return msg;							\
+}									\
+a_attr a_mq_msg_type *							\
+a_prefix##get(a_mq_type *mq) {						\
+	a_mq_msg_type *msg;						\
+	unsigned ns;							\
+									\
+	msg = a_prefix##tryget(mq);					\
+	if (msg != NULL) {						\
+		return msg;						\
+	}								\
+									\
+	ns = 1;								\
+	while (true) {							\
+		sleep_ns(ns);						\
+		msg = a_prefix##tryget(mq);				\
+		if (msg != NULL) {					\
+			return msg;					\
+		}							\
+		if (ns < 1000*1000*1000) {				\
+			/* Double sleep time, up to max 1 second. */	\
+			ns <<= 1;					\
+			if (ns > 1000*1000*1000) {			\
+				ns = 1000*1000*1000;			\
+			}						\
+		}							\
+	}								\
+}									\
+a_attr void								\
+a_prefix##put(a_mq_type *mq, a_mq_msg_type *msg) {			\
+									\
+	mtx_lock(&mq->lock);						\
+	ql_elm_new(msg, a_field);					\
+	ql_tail_insert(&mq->msgs, msg, a_field);			\
+	mq->count++;							\
+	mtx_unlock(&mq->lock);						\
+}
diff --git a/deps/jemalloc/test/include/test/mtx.h b/deps/jemalloc/test/include/test/mtx.h
new file mode 100644
index 0000000..066a213
--- /dev/null
+++ b/deps/jemalloc/test/include/test/mtx.h
@@ -0,0 +1,21 @@
+/*
+ * mtx is a slightly simplified version of malloc_mutex.  This code duplication
+ * is unfortunate, but there are allocator bootstrapping considerations that
+ * would leak into the test infrastructure if malloc_mutex were used directly
+ * in tests.
+ */
+
+typedef struct {
+#ifdef _WIN32
+	CRITICAL_SECTION	lock;
+#elif (defined(JEMALLOC_OS_UNFAIR_LOCK))
+	os_unfair_lock		lock;
+#else
+	pthread_mutex_t		lock;
+#endif
+} mtx_t;
+
+bool	mtx_init(mtx_t *mtx);
+void	mtx_fini(mtx_t *mtx);
+void	mtx_lock(mtx_t *mtx);
+void	mtx_unlock(mtx_t *mtx);
diff --git a/deps/jemalloc/test/include/test/nbits.h b/deps/jemalloc/test/include/test/nbits.h
new file mode 100644
index 0000000..c06cf1b
--- /dev/null
+++ b/deps/jemalloc/test/include/test/nbits.h
@@ -0,0 +1,111 @@
+#ifndef TEST_NBITS_H
+#define TEST_NBITS_H
+
+/* Interesting bitmap counts to test. */
+
+#define NBITS_TAB \
+    NB( 1) \
+    NB( 2) \
+    NB( 3) \
+    NB( 4) \
+    NB( 5) \
+    NB( 6) \
+    NB( 7) \
+    NB( 8) \
+    NB( 9) \
+    NB(10) \
+    NB(11) \
+    NB(12) \
+    NB(13) \
+    NB(14) \
+    NB(15) \
+    NB(16) \
+    NB(17) \
+    NB(18) \
+    NB(19) \
+    NB(20) \
+    NB(21) \
+    NB(22) \
+    NB(23) \
+    NB(24) \
+    NB(25) \
+    NB(26) \
+    NB(27) \
+    NB(28) \
+    NB(29) \
+    NB(30) \
+    NB(31) \
+    NB(32) \
+    \
+    NB(33) \
+    NB(34) \
+    NB(35) \
+    NB(36) \
+    NB(37) \
+    NB(38) \
+    NB(39) \
+    NB(40) \
+    NB(41) \
+    NB(42) \
+    NB(43) \
+    NB(44) \
+    NB(45) \
+    NB(46) \
+    NB(47) \
+    NB(48) \
+    NB(49) \
+    NB(50) \
+    NB(51) \
+    NB(52) \
+    NB(53) \
+    NB(54) \
+    NB(55) \
+    NB(56) \
+    NB(57) \
+    NB(58) \
+    NB(59) \
+    NB(60) \
+    NB(61) \
+    NB(62) \
+    NB(63) \
+    NB(64) \
+    NB(65) \
+    NB(66) \
+    NB(67) \
+    \
+    NB(126) \
+    NB(127) \
+    NB(128) \
+    NB(129) \
+    NB(130) \
+    \
+    NB(254) \
+    NB(255) \
+    NB(256) \
+    NB(257) \
+    NB(258) \
+    \
+    NB(510) \
+    NB(511) \
+    NB(512) \
+    NB(513) \
+    NB(514) \
+    \
+    NB(1022) \
+    NB(1023) \
+    NB(1024) \
+    NB(1025) \
+    NB(1026) \
+    \
+    NB(2048) \
+    \
+    NB(4094) \
+    NB(4095) \
+    NB(4096) \
+    NB(4097) \
+    NB(4098) \
+    \
+    NB(8192) \
+    NB(16384)
+
+#endif /* TEST_NBITS_H */
diff --git a/deps/jemalloc/test/include/test/san.h b/deps/jemalloc/test/include/test/san.h
new file mode 100644
index 0000000..da07865
--- /dev/null
+++ b/deps/jemalloc/test/include/test/san.h
@@ -0,0 +1,14 @@
+#if defined(JEMALLOC_UAF_DETECTION) || defined(JEMALLOC_DEBUG)
+#  define TEST_SAN_UAF_ALIGN_ENABLE "lg_san_uaf_align:12"
+#  define TEST_SAN_UAF_ALIGN_DISABLE "lg_san_uaf_align:-1"
+#else
+#  define TEST_SAN_UAF_ALIGN_ENABLE ""
+#  define TEST_SAN_UAF_ALIGN_DISABLE ""
+#endif
+
+static inline bool
+extent_is_guarded(tsdn_t *tsdn, void *ptr) {
+	edata_t *edata = emap_edata_lookup(tsdn, &arena_emap_global, ptr);
+	return edata_guarded_get(edata);
+}
+
diff --git a/deps/jemalloc/test/include/test/sleep.h b/deps/jemalloc/test/include/test/sleep.h
new file mode 100644
index 0000000..c232f63
--- /dev/null
+++ b/deps/jemalloc/test/include/test/sleep.h
@@ -0,0 +1 @@
+void sleep_ns(unsigned ns);
diff --git a/deps/jemalloc/test/include/test/test.h b/deps/jemalloc/test/include/test/test.h
new file mode 100644
index 0000000..d4b6591
--- /dev/null
+++ b/deps/jemalloc/test/include/test/test.h
@@ -0,0 +1,583 @@
+#define ASSERT_BUFSIZE	256
+
+#define verify_cmp(may_abort, t, a, b, cmp, neg_cmp, pri, ...) do {	\
+	const t a_ = (a);						\
+	const t b_ = (b);						\
+	if (!(a_ cmp b_)) {						\
+		char prefix[ASSERT_BUFSIZE];				\
+		char message[ASSERT_BUFSIZE];				\
+		malloc_snprintf(prefix, sizeof(prefix),			\
+		    "%s:%s:%d: Failed assertion: "			\
+		    "(%s) " #cmp " (%s) --> "				\
+		    "%" pri " " #neg_cmp " %" pri ": ",			\
+		    __func__, __FILE__, __LINE__,			\
+		    #a, #b, a_, b_);					\
+		malloc_snprintf(message, sizeof(message), __VA_ARGS__);	\
+		if (may_abort) {					\
+			abort();					\
+		} else {						\
+			p_test_fail(prefix, message);			\
+		}							\
+	}								\
+} while (0)
+
+#define expect_cmp(t, a, b, cmp, neg_cmp, pri, ...) verify_cmp(false,	\
+    t, a, b, cmp, neg_cmp, pri, __VA_ARGS__)
+
+#define expect_ptr_eq(a, b, ...)	expect_cmp(void *, a, b, ==,	\
+    !=, "p", __VA_ARGS__)
+#define expect_ptr_ne(a, b, ...)	expect_cmp(void *, a, b, !=,	\
+    ==, "p", __VA_ARGS__)
+#define expect_ptr_null(a, ...)		expect_cmp(void *, a, NULL, ==,	\
+    !=, "p", __VA_ARGS__)
+#define expect_ptr_not_null(a, ...)	expect_cmp(void *, a, NULL, !=,	\
+    ==, "p", __VA_ARGS__)
+
+#define expect_c_eq(a, b, ...)	expect_cmp(char, a, b, ==, !=, "c", __VA_ARGS__)
+#define expect_c_ne(a, b, ...)	expect_cmp(char, a, b, !=, ==, "c", __VA_ARGS__)
+#define expect_c_lt(a, b, ...)	expect_cmp(char, a, b, <, >=, "c", __VA_ARGS__)
+#define expect_c_le(a, b, ...)	expect_cmp(char, a, b, <=, >, "c", __VA_ARGS__)
+#define expect_c_ge(a, b, ...)	expect_cmp(char, a, b, >=, <, "c", __VA_ARGS__)
+#define expect_c_gt(a, b, ...)	expect_cmp(char, a, b, >, <=, "c", __VA_ARGS__)
+
+#define expect_x_eq(a, b, ...)	expect_cmp(int, a, b, ==, !=, "#x", __VA_ARGS__)
+#define expect_x_ne(a, b, ...)	expect_cmp(int, a, b, !=, ==, "#x", __VA_ARGS__)
+#define expect_x_lt(a, b, ...)	expect_cmp(int, a, b, <, >=, "#x", __VA_ARGS__)
+#define expect_x_le(a, b, ...)	expect_cmp(int, a, b, <=, >, "#x", __VA_ARGS__)
+#define expect_x_ge(a, b, ...)	expect_cmp(int, a, b, >=, <, "#x", __VA_ARGS__)
+#define expect_x_gt(a, b, ...)	expect_cmp(int, a, b, >, <=, "#x", __VA_ARGS__)
+
+#define expect_d_eq(a, b, ...)	expect_cmp(int, a, b, ==, !=, "d", __VA_ARGS__)
+#define expect_d_ne(a, b, ...)	expect_cmp(int, a, b, !=, ==, "d", __VA_ARGS__)
+#define expect_d_lt(a, b, ...)	expect_cmp(int, a, b, <, >=, "d", __VA_ARGS__)
+#define expect_d_le(a, b, ...)	expect_cmp(int, a, b, <=, >, "d", __VA_ARGS__)
+#define expect_d_ge(a, b, ...)	expect_cmp(int, a, b, >=, <, "d", __VA_ARGS__)
+#define expect_d_gt(a, b, ...)	expect_cmp(int, a, b, >, <=, "d", __VA_ARGS__)
+
+#define expect_u_eq(a, b, ...)	expect_cmp(int, a, b, ==, !=, "u", __VA_ARGS__)
+#define expect_u_ne(a, b, ...)	expect_cmp(int, a, b, !=, ==, "u", __VA_ARGS__)
+#define expect_u_lt(a, b, ...)	expect_cmp(int, a, b, <, >=, "u", __VA_ARGS__)
+#define expect_u_le(a, b, ...)	expect_cmp(int, a, b, <=, >, "u", __VA_ARGS__)
+#define expect_u_ge(a, b, ...)	expect_cmp(int, a, b, >=, <, "u", __VA_ARGS__)
+#define expect_u_gt(a, b, ...)	expect_cmp(int, a, b, >, <=, "u", __VA_ARGS__)
+
+#define expect_ld_eq(a, b, ...)	expect_cmp(long, a, b, ==,	\
+    !=, "ld", __VA_ARGS__)
+#define expect_ld_ne(a, b, ...)	expect_cmp(long, a, b, !=,	\
+    ==, "ld", __VA_ARGS__)
+#define expect_ld_lt(a, b, ...)	expect_cmp(long, a, b, <,	\
+    >=, "ld", __VA_ARGS__)
+#define expect_ld_le(a, b, ...)	expect_cmp(long, a, b, <=,	\
+    >, "ld", __VA_ARGS__)
+#define expect_ld_ge(a, b, ...)	expect_cmp(long, a, b, >=,	\
+    <, "ld", __VA_ARGS__)
+#define expect_ld_gt(a, b, ...)	expect_cmp(long, a, b, >,	\
+    <=, "ld", __VA_ARGS__)
+
+#define expect_lu_eq(a, b, ...)	expect_cmp(unsigned long,	\
+    a, b, ==, !=, "lu", __VA_ARGS__)
+#define expect_lu_ne(a, b, ...)	expect_cmp(unsigned long,	\
+    a, b, !=, ==, "lu", __VA_ARGS__)
+#define expect_lu_lt(a, b, ...)	expect_cmp(unsigned long,	\
+    a, b, <, >=, "lu", __VA_ARGS__)
+#define expect_lu_le(a, b, ...)	expect_cmp(unsigned long,	\
+    a, b, <=, >, "lu", __VA_ARGS__)
+#define expect_lu_ge(a, b, ...)	expect_cmp(unsigned long,	\
+    a, b, >=, <, "lu", __VA_ARGS__)
+#define expect_lu_gt(a, b, ...)	expect_cmp(unsigned long,	\
+    a, b, >, <=, "lu", __VA_ARGS__)
+
+#define expect_qd_eq(a, b, ...)	expect_cmp(long long, a, b, ==,	\
+    !=, "qd", __VA_ARGS__)
+#define expect_qd_ne(a, b, ...)	expect_cmp(long long, a, b, !=,	\
+    ==, "qd", __VA_ARGS__)
+#define expect_qd_lt(a, b, ...)	expect_cmp(long long, a, b, <,	\
+    >=, "qd", __VA_ARGS__)
+#define expect_qd_le(a, b, ...)	expect_cmp(long long, a, b, <=,	\
+    >, "qd", __VA_ARGS__)
+#define expect_qd_ge(a, b, ...)	expect_cmp(long long, a, b, >=,	\
+    <, "qd", __VA_ARGS__)
+#define expect_qd_gt(a, b, ...)	expect_cmp(long long, a, b, >,	\
+    <=, "qd", __VA_ARGS__)
+
+#define expect_qu_eq(a, b, ...)	expect_cmp(unsigned long long,	\
+    a, b, ==, !=, "qu", __VA_ARGS__)
+#define expect_qu_ne(a, b, ...)	expect_cmp(unsigned long long,	\
+    a, b, !=, ==, "qu", __VA_ARGS__)
+#define expect_qu_lt(a, b, ...)	expect_cmp(unsigned long long,	\
+    a, b, <, >=, "qu", __VA_ARGS__)
+#define expect_qu_le(a, b, ...)	expect_cmp(unsigned long long,	\
+    a, b, <=, >, "qu", __VA_ARGS__)
+#define expect_qu_ge(a, b, ...)	expect_cmp(unsigned long long,	\
+    a, b, >=, <, "qu", __VA_ARGS__)
+#define expect_qu_gt(a, b, ...)	expect_cmp(unsigned long long,	\
+    a, b, >, <=, "qu", __VA_ARGS__)
+
+#define expect_jd_eq(a, b, ...)	expect_cmp(intmax_t, a, b, ==,	\
+    !=, "jd", __VA_ARGS__)
+#define expect_jd_ne(a, b, ...)	expect_cmp(intmax_t, a, b, !=,	\
+    ==, "jd", __VA_ARGS__)
+#define expect_jd_lt(a, b, ...)	expect_cmp(intmax_t, a, b, <,	\
+    >=, "jd", __VA_ARGS__)
+#define expect_jd_le(a, b, ...)	expect_cmp(intmax_t, a, b, <=,	\
+    >, "jd", __VA_ARGS__)
+#define expect_jd_ge(a, b, ...)	expect_cmp(intmax_t, a, b, >=,	\
+    <, "jd", __VA_ARGS__)
+#define expect_jd_gt(a, b, ...)	expect_cmp(intmax_t, a, b, >,	\
+    <=, "jd", __VA_ARGS__)
+
+#define expect_ju_eq(a, b, ...)	expect_cmp(uintmax_t, a, b, ==,	\
+    !=, "ju", __VA_ARGS__)
+#define expect_ju_ne(a, b, ...)	expect_cmp(uintmax_t, a, b, !=,	\
+    ==, "ju", __VA_ARGS__)
+#define expect_ju_lt(a, b, ...)	expect_cmp(uintmax_t, a, b, <,	\
+    >=, "ju", __VA_ARGS__)
+#define expect_ju_le(a, b, ...)	expect_cmp(uintmax_t, a, b, <=,	\
+    >, "ju", __VA_ARGS__)
+#define expect_ju_ge(a, b, ...)	expect_cmp(uintmax_t, a, b, >=,	\
+    <, "ju", __VA_ARGS__)
+#define expect_ju_gt(a, b, ...)	expect_cmp(uintmax_t, a, b, >,	\
+    <=, "ju", __VA_ARGS__)
+
+#define expect_zd_eq(a, b, ...)	expect_cmp(ssize_t, a, b, ==,	\
+    !=, "zd", __VA_ARGS__)
+#define expect_zd_ne(a, b, ...)	expect_cmp(ssize_t, a, b, !=,	\
+    ==, "zd", __VA_ARGS__)
+#define expect_zd_lt(a, b, ...)	expect_cmp(ssize_t, a, b, <,	\
+    >=, "zd", __VA_ARGS__)
+#define expect_zd_le(a, b, ...)	expect_cmp(ssize_t, a, b, <=,	\
+    >, "zd", __VA_ARGS__)
+#define expect_zd_ge(a, b, ...)	expect_cmp(ssize_t, a, b, >=,	\
+    <, "zd", __VA_ARGS__)
+#define expect_zd_gt(a, b, ...)	expect_cmp(ssize_t, a, b, >,	\
+    <=, "zd", __VA_ARGS__)
+
+#define expect_zu_eq(a, b, ...)	expect_cmp(size_t, a, b, ==,	\
+    !=, "zu", __VA_ARGS__)
+#define expect_zu_ne(a, b, ...)	expect_cmp(size_t, a, b, !=,	\
+    ==, "zu", __VA_ARGS__)
+#define expect_zu_lt(a, b, ...)	expect_cmp(size_t, a, b, <,	\
+    >=, "zu", __VA_ARGS__)
+#define expect_zu_le(a, b, ...)	expect_cmp(size_t, a, b, <=,	\
+    >, "zu", __VA_ARGS__)
+#define expect_zu_ge(a, b, ...)	expect_cmp(size_t, a, b, >=,	\
+    <, "zu", __VA_ARGS__)
+#define expect_zu_gt(a, b, ...)	expect_cmp(size_t, a, b, >,	\
+    <=, "zu", __VA_ARGS__)
+
+#define expect_d32_eq(a, b, ...)	expect_cmp(int32_t, a, b, ==,	\
+    !=, FMTd32, __VA_ARGS__)
+#define expect_d32_ne(a, b, ...)	expect_cmp(int32_t, a, b, !=,	\
+    ==, FMTd32, __VA_ARGS__)
+#define expect_d32_lt(a, b, ...)	expect_cmp(int32_t, a, b, <,	\
+    >=, FMTd32, __VA_ARGS__)
+#define expect_d32_le(a, b, ...)	expect_cmp(int32_t, a, b, <=,	\
+    >, FMTd32, __VA_ARGS__)
+#define expect_d32_ge(a, b, ...)	expect_cmp(int32_t, a, b, >=,	\
+    <, FMTd32, __VA_ARGS__)
+#define expect_d32_gt(a, b, ...)	expect_cmp(int32_t, a, b, >,	\
+    <=, FMTd32, __VA_ARGS__)
+
+#define expect_u32_eq(a, b, ...)	expect_cmp(uint32_t, a, b, ==,	\
+    !=, FMTu32, __VA_ARGS__)
+#define expect_u32_ne(a, b, ...)	expect_cmp(uint32_t, a, b, !=,	\
+    ==, FMTu32, __VA_ARGS__)
+#define expect_u32_lt(a, b, ...)	expect_cmp(uint32_t, a, b, <,	\
+    >=, FMTu32, __VA_ARGS__)
+#define expect_u32_le(a, b, ...)	expect_cmp(uint32_t, a, b, <=,	\
+    >, FMTu32, __VA_ARGS__)
+#define expect_u32_ge(a, b, ...)	expect_cmp(uint32_t, a, b, >=,	\
+    <, FMTu32, __VA_ARGS__)
+#define expect_u32_gt(a, b, ...)	expect_cmp(uint32_t, a, b, >,	\
+    <=, FMTu32, __VA_ARGS__)
+
+#define expect_d64_eq(a, b, ...)	expect_cmp(int64_t, a, b, ==,	\
+    !=, FMTd64, __VA_ARGS__)
+#define expect_d64_ne(a, b, ...)	expect_cmp(int64_t, a, b, !=,	\
+    ==, FMTd64, __VA_ARGS__)
+#define expect_d64_lt(a, b, ...)	expect_cmp(int64_t, a, b, <,	\
+    >=, FMTd64, __VA_ARGS__)
+#define expect_d64_le(a, b, ...)	expect_cmp(int64_t, a, b, <=,	\
+    >, FMTd64, __VA_ARGS__)
+#define expect_d64_ge(a, b, ...)	expect_cmp(int64_t, a, b, >=,	\
+    <, FMTd64, __VA_ARGS__)
+#define expect_d64_gt(a, b, ...)	expect_cmp(int64_t, a, b, >,	\
+    <=, FMTd64, __VA_ARGS__)
+
+#define expect_u64_eq(a, b, ...)	expect_cmp(uint64_t, a, b, ==,	\
+    !=, FMTu64, __VA_ARGS__)
+#define expect_u64_ne(a, b, ...)	expect_cmp(uint64_t, a, b, !=,	\
+    ==, FMTu64, __VA_ARGS__)
+#define expect_u64_lt(a, b, ...)	expect_cmp(uint64_t, a, b, <,	\
+    >=, FMTu64, __VA_ARGS__)
+#define expect_u64_le(a, b, ...)	expect_cmp(uint64_t, a, b, <=,	\
+    >, FMTu64, __VA_ARGS__)
+#define expect_u64_ge(a, b, ...)	expect_cmp(uint64_t, a, b, >=,	\
+    <, FMTu64, __VA_ARGS__)
+#define expect_u64_gt(a, b, ...)	expect_cmp(uint64_t, a, b, >,	\
+    <=, FMTu64, __VA_ARGS__)
+
+#define verify_b_eq(may_abort, a, b, ...) do {				\
+	bool a_ = (a);							\
+	bool b_ = (b);							\
+	if (!(a_ == b_)) {						\
+		char prefix[ASSERT_BUFSIZE];				\
+		char message[ASSERT_BUFSIZE];				\
+		malloc_snprintf(prefix, sizeof(prefix),			\
+		    "%s:%s:%d: Failed assertion: "			\
+		    "(%s) == (%s) --> %s != %s: ",			\
+		    __func__, __FILE__, __LINE__,			\
+		    #a, #b, a_ ? "true" : "false",			\
+		    b_ ? "true" : "false");				\
+		malloc_snprintf(message, sizeof(message), __VA_ARGS__);	\
+		if (may_abort) {					\
+			abort();					\
+		} else {						\
+			p_test_fail(prefix, message);			\
+		}							\
+	}								\
+} while (0)
+
+#define verify_b_ne(may_abort, a, b, ...) do {				\
+	bool a_ = (a);							\
+	bool b_ = (b);							\
+	if (!(a_ != b_)) {						\
+		char prefix[ASSERT_BUFSIZE];				\
+		char message[ASSERT_BUFSIZE];				\
+		malloc_snprintf(prefix, sizeof(prefix),			\
+		    "%s:%s:%d: Failed assertion: "			\
+		    "(%s) != (%s) --> %s == %s: ",			\
+		    __func__, __FILE__, __LINE__,			\
+		    #a, #b, a_ ? "true" : "false",			\
+		    b_ ? "true" : "false");				\
+		malloc_snprintf(message, sizeof(message), __VA_ARGS__);	\
+		if (may_abort) {					\
+			abort();					\
+		} else {						\
+			p_test_fail(prefix, message);			\
+		}							\
+	}								\
+} while (0)
+
+#define expect_b_eq(a, b, ...)	verify_b_eq(false, a, b, __VA_ARGS__)
+#define expect_b_ne(a, b, ...)	verify_b_ne(false, a, b, __VA_ARGS__)
+
+#define expect_true(a, ...)	expect_b_eq(a, true, __VA_ARGS__)
+#define expect_false(a, ...)	expect_b_eq(a, false, __VA_ARGS__)
+
+#define verify_str_eq(may_abort, a, b, ...) do {			\
+	if (strcmp((a), (b))) {						\
+		char prefix[ASSERT_BUFSIZE];				\
+		char message[ASSERT_BUFSIZE];				\
+		malloc_snprintf(prefix, sizeof(prefix),			\
+		    "%s:%s:%d: Failed assertion: "			\
+		    "(%s) same as (%s) --> "				\
+		    "\"%s\" differs from \"%s\": ",			\
+		    __func__, __FILE__, __LINE__, #a, #b, a, b);	\
+		malloc_snprintf(message, sizeof(message), __VA_ARGS__);	\
+		if (may_abort) {					\
+			abort();					\
+		} else {						\
+			p_test_fail(prefix, message);			\
+		}							\
+	}								\
+} while (0)
+
+#define verify_str_ne(may_abort, a, b, ...) do {			\
+	if (!strcmp((a), (b))) {					\
+		char prefix[ASSERT_BUFSIZE];				\
+		char message[ASSERT_BUFSIZE];				\
+		malloc_snprintf(prefix, sizeof(prefix),			\
+		    "%s:%s:%d: Failed assertion: "			\
+		    "(%s) differs from (%s) --> "			\
+		    "\"%s\" same as \"%s\": ",				\
+		    __func__, __FILE__, __LINE__, #a, #b, a, b);	\
+		malloc_snprintf(message, sizeof(message), __VA_ARGS__);	\
+		if (may_abort) {					\
+			abort();					\
+		} else {						\
+			p_test_fail(prefix, message);			\
+		}							\
+	}								\
+} while (0)
+
+#define expect_str_eq(a, b, ...) verify_str_eq(false, a, b, __VA_ARGS__)
+#define expect_str_ne(a, b, ...) verify_str_ne(false, a, b, __VA_ARGS__)
+
+#define verify_not_reached(may_abort, ...) do {				\
+	char prefix[ASSERT_BUFSIZE];					\
+	char message[ASSERT_BUFSIZE];					\
+	malloc_snprintf(prefix, sizeof(prefix),				\
+	    "%s:%s:%d: Unreachable code reached: ",			\
+	    __func__, __FILE__, __LINE__);				\
+	malloc_snprintf(message, sizeof(message), __VA_ARGS__);		\
+	if (may_abort) {						\
+		abort();						\
+	} else {							\
+		p_test_fail(prefix, message);				\
+	}								\
+} while (0)
+
+#define expect_not_reached(...) verify_not_reached(false, __VA_ARGS__)
+
+#define assert_cmp(t, a, b, cmp, neg_cmp, pri, ...) verify_cmp(true,	\
+    t, a, b, cmp, neg_cmp, pri, __VA_ARGS__)
+
+#define assert_ptr_eq(a, b, ...)	assert_cmp(void *, a, b, ==,	\
+    !=, "p", __VA_ARGS__)
+#define assert_ptr_ne(a, b, ...)	assert_cmp(void *, a, b, !=,	\
+    ==, "p", __VA_ARGS__)
+#define assert_ptr_null(a, ...)		assert_cmp(void *, a, NULL, ==,	\
+    !=, "p", __VA_ARGS__)
+#define assert_ptr_not_null(a, ...)	assert_cmp(void *, a, NULL, !=,	\
+    ==, "p", __VA_ARGS__)
+
+#define assert_c_eq(a, b, ...)	assert_cmp(char, a, b, ==, !=, "c", __VA_ARGS__)
+#define assert_c_ne(a, b, ...)	assert_cmp(char, a, b, !=, ==, "c", __VA_ARGS__)
+#define assert_c_lt(a, b, ...)	assert_cmp(char, a, b, <, >=, "c", __VA_ARGS__)
+#define assert_c_le(a, b, ...)	assert_cmp(char, a, b, <=, >, "c", __VA_ARGS__)
+#define assert_c_ge(a, b, ...)	assert_cmp(char, a, b, >=, <, "c", __VA_ARGS__)
+#define assert_c_gt(a, b, ...)	assert_cmp(char, a, b, >, <=, "c", __VA_ARGS__)
+
+#define assert_x_eq(a, b, ...)	assert_cmp(int, a, b, ==, !=, "#x", __VA_ARGS__)
+#define assert_x_ne(a, b, ...)	assert_cmp(int, a, b, !=, ==, "#x", __VA_ARGS__)
+#define assert_x_lt(a, b, ...)	assert_cmp(int, a, b, <, >=, "#x", __VA_ARGS__)
+#define assert_x_le(a, b, ...)	assert_cmp(int, a, b, <=, >, "#x", __VA_ARGS__)
+#define assert_x_ge(a, b, ...)	assert_cmp(int, a, b, >=, <, "#x", __VA_ARGS__)
+#define assert_x_gt(a, b, ...)	assert_cmp(int, a, b, >, <=, "#x", __VA_ARGS__)
+
+#define assert_d_eq(a, b, ...)	assert_cmp(int, a, b, ==, !=, "d", __VA_ARGS__)
+#define assert_d_ne(a, b, ...)	assert_cmp(int, a, b, !=, ==, "d", __VA_ARGS__)
+#define assert_d_lt(a, b, ...)	assert_cmp(int, a, b, <, >=, "d", __VA_ARGS__)
+#define assert_d_le(a, b, ...)	assert_cmp(int, a, b, <=, >, "d", __VA_ARGS__)
+#define assert_d_ge(a, b, ...)	assert_cmp(int, a, b, >=, <, "d", __VA_ARGS__)
+#define assert_d_gt(a, b, ...)	assert_cmp(int, a, b, >, <=, "d", __VA_ARGS__)
+
+#define assert_u_eq(a, b, ...)	assert_cmp(int, a, b, ==, !=, "u", __VA_ARGS__)
+#define assert_u_ne(a, b, ...)	assert_cmp(int, a, b, !=, ==, "u", __VA_ARGS__)
+#define assert_u_lt(a, b, ...)	assert_cmp(int, a, b, <, >=, "u", __VA_ARGS__)
+#define assert_u_le(a, b, ...)	assert_cmp(int, a, b, <=, >, "u", __VA_ARGS__)
+#define assert_u_ge(a, b, ...)	assert_cmp(int, a, b, >=, <, "u", __VA_ARGS__)
+#define assert_u_gt(a, b, ...)	assert_cmp(int, a, b, >, <=, "u", __VA_ARGS__)
+
+#define assert_ld_eq(a, b, ...)	assert_cmp(long, a, b, ==,	\
+    !=, "ld", __VA_ARGS__)
+#define assert_ld_ne(a, b, ...)	assert_cmp(long, a, b, !=,	\
+    ==, "ld", __VA_ARGS__)
+#define assert_ld_lt(a, b, ...)	assert_cmp(long, a, b, <,	\
+    >=, "ld", __VA_ARGS__)
+#define assert_ld_le(a, b, ...)	assert_cmp(long, a, b, <=,	\
+    >, "ld", __VA_ARGS__)
+#define assert_ld_ge(a, b, ...)	assert_cmp(long, a, b, >=,	\
+    <, "ld", __VA_ARGS__)
+#define assert_ld_gt(a, b, ...)	assert_cmp(long, a, b, >,	\
+    <=, "ld", __VA_ARGS__)
+
+#define assert_lu_eq(a, b, ...)	assert_cmp(unsigned long,	\
+    a, b, ==, !=, "lu", __VA_ARGS__)
+#define assert_lu_ne(a, b, ...)	assert_cmp(unsigned long,	\
+    a, b, !=, ==, "lu", __VA_ARGS__)
+#define assert_lu_lt(a, b, ...)	assert_cmp(unsigned long,	\
+    a, b, <, >=, "lu", __VA_ARGS__)
+#define assert_lu_le(a, b, ...)	assert_cmp(unsigned long,	\
+    a, b, <=, >, "lu", __VA_ARGS__)
+#define assert_lu_ge(a, b, ...)	assert_cmp(unsigned long,	\
+    a, b, >=, <, "lu", __VA_ARGS__)
+#define assert_lu_gt(a, b, ...)	assert_cmp(unsigned long,	\
+    a, b, >, <=, "lu", __VA_ARGS__)
+
+#define assert_qd_eq(a, b, ...)	assert_cmp(long long, a, b, ==,	\
+    !=, "qd", __VA_ARGS__)
+#define assert_qd_ne(a, b, ...)	assert_cmp(long long, a, b, !=,	\
+    ==, "qd", __VA_ARGS__)
+#define assert_qd_lt(a, b, ...)	assert_cmp(long long, a, b, <,	\
+    >=, "qd", __VA_ARGS__)
+#define assert_qd_le(a, b, ...)	assert_cmp(long long, a, b, <=,	\
+    >, "qd", __VA_ARGS__)
+#define assert_qd_ge(a, b, ...)	assert_cmp(long long, a, b, >=,	\
+    <, "qd", __VA_ARGS__)
+#define assert_qd_gt(a, b, ...)	assert_cmp(long long, a, b, >,	\
+    <=, "qd", __VA_ARGS__)
+
+#define assert_qu_eq(a, b, ...)	assert_cmp(unsigned long long,	\
+    a, b, ==, !=, "qu", __VA_ARGS__)
+#define assert_qu_ne(a, b, ...)	assert_cmp(unsigned long long,	\
+    a, b, !=, ==, "qu", __VA_ARGS__)
+#define assert_qu_lt(a, b, ...)	assert_cmp(unsigned long long,	\
+    a, b, <, >=, "qu", __VA_ARGS__)
+#define assert_qu_le(a, b, ...)	assert_cmp(unsigned long long,	\
+    a, b, <=, >, "qu", __VA_ARGS__)
+#define assert_qu_ge(a, b, ...)	assert_cmp(unsigned long long,	\
+    a, b, >=, <, "qu", __VA_ARGS__)
+#define assert_qu_gt(a, b, ...)	assert_cmp(unsigned long long,	\
+    a, b, >, <=, "qu", __VA_ARGS__)
+
+#define assert_jd_eq(a, b, ...)	assert_cmp(intmax_t, a, b, ==,	\
+    !=, "jd", __VA_ARGS__)
+#define assert_jd_ne(a, b, ...)	assert_cmp(intmax_t, a, b, !=,	\
+    ==, "jd", __VA_ARGS__)
+#define assert_jd_lt(a, b, ...)	assert_cmp(intmax_t, a, b, <,	\
+    >=, "jd", __VA_ARGS__)
+#define assert_jd_le(a, b, ...)	assert_cmp(intmax_t, a, b, <=,	\
+    >, "jd", __VA_ARGS__)
+#define assert_jd_ge(a, b, ...)	assert_cmp(intmax_t, a, b, >=,	\
+    <, "jd", __VA_ARGS__)
+#define assert_jd_gt(a, b, ...)	assert_cmp(intmax_t, a, b, >,	\
+    <=, "jd", __VA_ARGS__)
+
+#define assert_ju_eq(a, b, ...)	assert_cmp(uintmax_t, a, b, ==,	\
+    !=, "ju", __VA_ARGS__)
+#define assert_ju_ne(a, b, ...)	assert_cmp(uintmax_t, a, b, !=,	\
+    ==, "ju", __VA_ARGS__)
+#define assert_ju_lt(a, b, ...)	assert_cmp(uintmax_t, a, b, <,	\
+    >=, "ju", __VA_ARGS__)
+#define assert_ju_le(a, b, ...)	assert_cmp(uintmax_t, a, b, <=,	\
+    >, "ju", __VA_ARGS__)
+#define assert_ju_ge(a, b, ...)	assert_cmp(uintmax_t, a, b, >=,	\
+    <, "ju", __VA_ARGS__)
+#define assert_ju_gt(a, b, ...)	assert_cmp(uintmax_t, a, b, >,	\
+    <=, "ju", __VA_ARGS__)
+
+#define assert_zd_eq(a, b, ...)	assert_cmp(ssize_t, a, b, ==,	\
+    !=, "zd", __VA_ARGS__)
+#define assert_zd_ne(a, b, ...)	assert_cmp(ssize_t, a, b, !=,	\
+    ==, "zd", __VA_ARGS__)
+#define assert_zd_lt(a, b, ...)	assert_cmp(ssize_t, a, b, <,	\
+    >=, "zd", __VA_ARGS__)
+#define assert_zd_le(a, b, ...)	assert_cmp(ssize_t, a, b, <=,	\
+    >, "zd", __VA_ARGS__)
+#define assert_zd_ge(a, b, ...)	assert_cmp(ssize_t, a, b, >=,	\
+    <, "zd", __VA_ARGS__)
+#define assert_zd_gt(a, b, ...)	assert_cmp(ssize_t, a, b, >,	\
+    <=, "zd", __VA_ARGS__)
+
+#define assert_zu_eq(a, b, ...)	assert_cmp(size_t, a, b, ==,	\
+    !=, "zu", __VA_ARGS__)
+#define assert_zu_ne(a, b, ...)	assert_cmp(size_t, a, b, !=,	\
+    ==, "zu", __VA_ARGS__)
+#define assert_zu_lt(a, b, ...)	assert_cmp(size_t, a, b, <,	\
+    >=, "zu", __VA_ARGS__)
+#define assert_zu_le(a, b, ...)	assert_cmp(size_t, a, b, <=,	\
+    >, "zu", __VA_ARGS__)
+#define assert_zu_ge(a, b, ...)	assert_cmp(size_t, a, b, >=,	\
+    <, "zu", __VA_ARGS__)
+#define assert_zu_gt(a, b, ...)	assert_cmp(size_t, a, b, >,	\
+    <=, "zu", __VA_ARGS__)
+
+#define assert_d32_eq(a, b, ...)	assert_cmp(int32_t, a, b, ==,	\
+    !=, FMTd32, __VA_ARGS__)
+#define assert_d32_ne(a, b, ...)	assert_cmp(int32_t, a, b, !=,	\
+    ==, FMTd32, __VA_ARGS__)
+#define assert_d32_lt(a, b, ...)	assert_cmp(int32_t, a, b, <,	\
+    >=, FMTd32, __VA_ARGS__)
+#define assert_d32_le(a, b, ...)	assert_cmp(int32_t, a, b, <=,	\
+    >, FMTd32, __VA_ARGS__)
+#define assert_d32_ge(a, b, ...)	assert_cmp(int32_t, a, b, >=,	\
+    <, FMTd32, __VA_ARGS__)
+#define assert_d32_gt(a, b, ...)	assert_cmp(int32_t, a, b, >,	\
+    <=, FMTd32, __VA_ARGS__)
+
+#define assert_u32_eq(a, b, ...)	assert_cmp(uint32_t, a, b, ==,	\
+    !=, FMTu32, __VA_ARGS__)
+#define assert_u32_ne(a, b, ...)	assert_cmp(uint32_t, a, b, !=,	\
+    ==, FMTu32, __VA_ARGS__)
+#define assert_u32_lt(a, b, ...)	assert_cmp(uint32_t, a, b, <,	\
+    >=, FMTu32, __VA_ARGS__)
+#define assert_u32_le(a, b, ...)	assert_cmp(uint32_t, a, b, <=,	\
+    >, FMTu32, __VA_ARGS__)
+#define assert_u32_ge(a, b, ...)	assert_cmp(uint32_t, a, b, >=,	\
+    <, FMTu32, __VA_ARGS__)
+#define assert_u32_gt(a, b, ...)	assert_cmp(uint32_t, a, b, >,	\
+    <=, FMTu32, __VA_ARGS__)
+
+#define assert_d64_eq(a, b, ...)	assert_cmp(int64_t, a, b, ==,	\
+    !=, FMTd64, __VA_ARGS__)
+#define assert_d64_ne(a, b, ...)	assert_cmp(int64_t, a, b, !=,	\
+    ==, FMTd64, __VA_ARGS__)
+#define assert_d64_lt(a, b, ...)	assert_cmp(int64_t, a, b, <,	\
+    >=, FMTd64, __VA_ARGS__)
+#define assert_d64_le(a, b, ...)	assert_cmp(int64_t, a, b, <=,	\
+    >, FMTd64, __VA_ARGS__)
+#define assert_d64_ge(a, b, ...)	assert_cmp(int64_t, a, b, >=,	\
+    <, FMTd64, __VA_ARGS__)
+#define assert_d64_gt(a, b, ...)	assert_cmp(int64_t, a, b, >,	\
+    <=, FMTd64, __VA_ARGS__)
+
+#define assert_u64_eq(a, b, ...)	assert_cmp(uint64_t, a, b, ==,	\
+    !=, FMTu64, __VA_ARGS__)
+#define assert_u64_ne(a, b, ...)	assert_cmp(uint64_t, a, b, !=,	\
+    ==, FMTu64, __VA_ARGS__)
+#define assert_u64_lt(a, b, ...)	assert_cmp(uint64_t, a, b, <,	\
+    >=, FMTu64, __VA_ARGS__)
+#define assert_u64_le(a, b, ...)	assert_cmp(uint64_t, a, b, <=,	\
+    >, FMTu64, __VA_ARGS__)
+#define assert_u64_ge(a, b, ...)	assert_cmp(uint64_t, a, b, >=,	\
+    <, FMTu64, __VA_ARGS__)
+#define assert_u64_gt(a, b, ...)	assert_cmp(uint64_t, a, b, >,	\
+    <=, FMTu64, __VA_ARGS__)
+
+#define assert_b_eq(a, b, ...)	verify_b_eq(true, a, b, __VA_ARGS__)
+#define assert_b_ne(a, b, ...)	verify_b_ne(true, a, b, __VA_ARGS__)
+
+#define assert_true(a, ...)	assert_b_eq(a, true, __VA_ARGS__)
+#define assert_false(a, ...)	assert_b_eq(a, false, __VA_ARGS__)
+
+#define assert_str_eq(a, b, ...) verify_str_eq(true, a, b, __VA_ARGS__)
+#define assert_str_ne(a, b, ...) verify_str_ne(true, a, b, __VA_ARGS__)
+
+#define assert_not_reached(...) verify_not_reached(true, __VA_ARGS__)
+
+/*
+ * If this enum changes, corresponding changes in test/test.sh.in are also
+ * necessary.
+ */
+typedef enum {
+	test_status_pass = 0,
+	test_status_skip = 1,
+	test_status_fail = 2,
+
+	test_status_count = 3
+} test_status_t;
+
+typedef void (test_t)(void);
+
+#define TEST_BEGIN(f)							\
+static void								\
+f(void) {								\
+	p_test_init(#f);
+
+#define TEST_END							\
+	goto label_test_end;						\
+label_test_end:								\
+	p_test_fini();							\
+}
+
+#define test(...)							\
+	p_test(__VA_ARGS__, NULL)
+
+#define test_no_reentrancy(...)							\
+	p_test_no_reentrancy(__VA_ARGS__, NULL)
+
+#define test_no_malloc_init(...)					\
+	p_test_no_malloc_init(__VA_ARGS__, NULL)
+
+#define test_skip_if(e) do {						\
+	if (e) {							\
+		test_skip("%s:%s:%d: Test skipped: (%s)",		\
+		    __func__, __FILE__, __LINE__, #e);			\
+		goto label_test_end;					\
+	}								\
+} while (0)
+
+bool test_is_reentrant();
+
+void	test_skip(const char *format, ...) JEMALLOC_FORMAT_PRINTF(1, 2);
+void	test_fail(const char *format, ...) JEMALLOC_FORMAT_PRINTF(1, 2);
+
+/* For private use by macros. */
+test_status_t	p_test(test_t *t, ...);
+test_status_t	p_test_no_reentrancy(test_t *t, ...);
+test_status_t	p_test_no_malloc_init(test_t *t, ...);
+void	p_test_init(const char *name);
+void	p_test_fini(void);
+void	p_test_fail(const char *prefix, const char *message);
diff --git a/deps/jemalloc/test/include/test/thd.h b/deps/jemalloc/test/include/test/thd.h
new file mode 100644
index 0000000..47a5126
--- /dev/null
+++ b/deps/jemalloc/test/include/test/thd.h
@@ -0,0 +1,9 @@
+/* Abstraction layer for threading in tests. */
+#ifdef _WIN32
+typedef HANDLE thd_t;
+#else
+typedef pthread_t thd_t;
+#endif
+
+void	thd_create(thd_t *thd, void *(*proc)(void *), void *arg);
+void	thd_join(thd_t thd, void **ret);
diff --git a/deps/jemalloc/test/include/test/timer.h b/deps/jemalloc/test/include/test/timer.h
new file mode 100644
index 0000000..ace6191
--- /dev/null
+++ b/deps/jemalloc/test/include/test/timer.h
@@ -0,0 +1,11 @@
+/* Simple timer, for use in benchmark reporting. */
+
+typedef struct {
+	nstime_t t0;
+	nstime_t t1;
+} timedelta_t;
+
+void	timer_start(timedelta_t *timer);
+void	timer_stop(timedelta_t *timer);
+uint64_t	timer_usec(const timedelta_t *timer);
+void	timer_ratio(timedelta_t *a, timedelta_t *b, char *buf, size_t buflen);
diff --git a/deps/jemalloc/test/integration/MALLOCX_ARENA.c b/deps/jemalloc/test/integration/MALLOCX_ARENA.c
new file mode 100644
index 0000000..7e61df0
--- /dev/null
+++ b/deps/jemalloc/test/integration/MALLOCX_ARENA.c
@@ -0,0 +1,66 @@
+#include "test/jemalloc_test.h"
+
+#define NTHREADS 10
+
+static bool have_dss =
+#ifdef JEMALLOC_DSS
+    true
+#else
+    false
+#endif
+    ;
+
+void *
+thd_start(void *arg) {
+	unsigned thread_ind = (unsigned)(uintptr_t)arg;
+	unsigned arena_ind;
+	void *p;
+	size_t sz;
+
+	sz = sizeof(arena_ind);
+	expect_d_eq(mallctl("arenas.create", (void *)&arena_ind, &sz, NULL, 0),
+	    0, "Error in arenas.create");
+
+	if (thread_ind % 4 != 3) {
+		size_t mib[3];
+		size_t miblen = sizeof(mib) / sizeof(size_t);
+		const char *dss_precs[] = {"disabled", "primary", "secondary"};
+		unsigned prec_ind = thread_ind %
+		    (sizeof(dss_precs)/sizeof(char*));
+		const char *dss = dss_precs[prec_ind];
+		int expected_err = (have_dss || prec_ind == 0) ? 0 : EFAULT;
+		expect_d_eq(mallctlnametomib("arena.0.dss", mib, &miblen), 0,
+		    "Error in mallctlnametomib()");
+		mib[1] = arena_ind;
+		expect_d_eq(mallctlbymib(mib, miblen, NULL, NULL, (void *)&dss,
+		    sizeof(const char *)), expected_err,
+		    "Error in mallctlbymib()");
+	}
+
+	p = mallocx(1, MALLOCX_ARENA(arena_ind));
+	expect_ptr_not_null(p, "Unexpected mallocx() error");
+	dallocx(p, 0);
+
+	return NULL;
+}
+
+TEST_BEGIN(test_MALLOCX_ARENA) {
+	thd_t thds[NTHREADS];
+	unsigned i;
+
+	for (i = 0; i < NTHREADS; i++) {
+		thd_create(&thds[i], thd_start,
+		    (void *)(uintptr_t)i);
+	}
+
+	for (i = 0; i < NTHREADS; i++) {
+		thd_join(thds[i], NULL);
+	}
+}
+TEST_END
+
+int
+main(void) {
+	return test(
+	    test_MALLOCX_ARENA);
+}
diff --git a/deps/jemalloc/test/integration/aligned_alloc.c b/deps/jemalloc/test/integration/aligned_alloc.c
new file mode 100644
index 0000000..b37d5ba
--- /dev/null
+++ b/deps/jemalloc/test/integration/aligned_alloc.c
@@ -0,0 +1,157 @@
+#include "test/jemalloc_test.h"
+
+#define MAXALIGN (((size_t)1) << 23)
+
+/*
+ * On systems which can't merge extents, tests that call this function generate
+ * a lot of dirty memory very quickly.  Purging between cycles mitigates
+ * potential OOM on e.g. 32-bit Windows.
+ */
+static void
+purge(void) {
+	expect_d_eq(mallctl("arena.0.purge", NULL, NULL, NULL, 0), 0,
+	    "Unexpected mallctl error");
+}
+
+TEST_BEGIN(test_alignment_errors) {
+	size_t alignment;
+	void *p;
+
+	alignment = 0;
+	set_errno(0);
+	p = aligned_alloc(alignment, 1);
+	expect_false(p != NULL || get_errno() != EINVAL,
+	    "Expected error for invalid alignment %zu", alignment);
+
+	for (alignment = sizeof(size_t); alignment < MAXALIGN;
+	    alignment <<= 1) {
+		set_errno(0);
+		p = aligned_alloc(alignment + 1, 1);
+		expect_false(p != NULL || get_errno() != EINVAL,
+		    "Expected error for invalid alignment %zu",
+		    alignment + 1);
+	}
+}
+TEST_END
+
+
+/*
+ * GCC "-Walloc-size-larger-than" warning detects when one of the memory
+ * allocation functions is called with a size larger than the maximum size that
+ * they support. Here we want to explicitly test that the allocation functions
+ * do indeed fail properly when this is the case, which triggers the warning.
+ * Therefore we disable the warning for these tests.
+ */
+JEMALLOC_DIAGNOSTIC_PUSH
+JEMALLOC_DIAGNOSTIC_IGNORE_ALLOC_SIZE_LARGER_THAN
+
+TEST_BEGIN(test_oom_errors) {
+	size_t alignment, size;
+	void *p;
+
+#if LG_SIZEOF_PTR == 3
+	alignment = UINT64_C(0x8000000000000000);
+	size      = UINT64_C(0x8000000000000000);
+#else
+	alignment = 0x80000000LU;
+	size      = 0x80000000LU;
+#endif
+	set_errno(0);
+	p = aligned_alloc(alignment, size);
+	expect_false(p != NULL || get_errno() != ENOMEM,
+	    "Expected error for aligned_alloc(%zu, %zu)",
+	    alignment, size);
+
+#if LG_SIZEOF_PTR == 3
+	alignment = UINT64_C(0x4000000000000000);
+	size      = UINT64_C(0xc000000000000001);
+#else
+	alignment = 0x40000000LU;
+	size      = 0xc0000001LU;
+#endif
+	set_errno(0);
+	p = aligned_alloc(alignment, size);
+	expect_false(p != NULL || get_errno() != ENOMEM,
+	    "Expected error for aligned_alloc(%zu, %zu)",
+	    alignment, size);
+
+	alignment = 0x10LU;
+#if LG_SIZEOF_PTR == 3
+	size = UINT64_C(0xfffffffffffffff0);
+#else
+	size = 0xfffffff0LU;
+#endif
+	set_errno(0);
+	p = aligned_alloc(alignment, size);
+	expect_false(p != NULL || get_errno() != ENOMEM,
+	    "Expected error for aligned_alloc(&p, %zu, %zu)",
+	    alignment, size);
+}
+TEST_END
+
+/* Re-enable the "-Walloc-size-larger-than=" warning */
+JEMALLOC_DIAGNOSTIC_POP
+
+TEST_BEGIN(test_alignment_and_size) {
+#define NITER 4
+	size_t alignment, size, total;
+	unsigned i;
+	void *ps[NITER];
+
+	for (i = 0; i < NITER; i++) {
+		ps[i] = NULL;
+	}
+
+	for (alignment = 8;
+	    alignment <= MAXALIGN;
+	    alignment <<= 1) {
+		total = 0;
+		for (size = 1;
+		    size < 3 * alignment && size < (1U << 31);
+		    size += (alignment >> (LG_SIZEOF_PTR-1)) - 1) {
+			for (i = 0; i < NITER; i++) {
+				ps[i] = aligned_alloc(alignment, size);
+				if (ps[i] == NULL) {
+					char buf[BUFERROR_BUF];
+
+					buferror(get_errno(), buf, sizeof(buf));
+					test_fail(
+					    "Error for alignment=%zu, "
+					    "size=%zu (%#zx): %s",
+					    alignment, size, size, buf);
+				}
+				total += TEST_MALLOC_SIZE(ps[i]);
+				if (total >= (MAXALIGN << 1)) {
+					break;
+				}
+			}
+			for (i = 0; i < NITER; i++) {
+				if (ps[i] != NULL) {
+					free(ps[i]);
+					ps[i] = NULL;
+				}
+			}
+		}
+		purge();
+	}
+#undef NITER
+}
+TEST_END
+
+TEST_BEGIN(test_zero_alloc) {
+	void *res = aligned_alloc(8, 0);
+	assert(res);
+	size_t usable = TEST_MALLOC_SIZE(res);
+	assert(usable > 0);
+	free(res);
+}
+TEST_END
+
+int
+main(void) {
+	return test(
+	    test_alignment_errors,
+	    test_oom_errors,
+	    test_alignment_and_size,
+	    test_zero_alloc);
+}
diff --git a/deps/jemalloc/test/integration/allocated.c b/deps/jemalloc/test/integration/allocated.c
new file mode 100644
index 0000000..0c64272
--- /dev/null
+++ b/deps/jemalloc/test/integration/allocated.c
@@ -0,0 +1,124 @@
+#include "test/jemalloc_test.h"
+
+static const bool config_stats =
+#ifdef JEMALLOC_STATS
+    true
+#else
+    false
+#endif
+    ;
+
+void *
+thd_start(void *arg) {
+	int err;
+	void *p;
+	uint64_t a0, a1, d0, d1;
+	uint64_t *ap0, *ap1, *dp0, *dp1;
+	size_t sz, usize;
+
+	sz = sizeof(a0);
+	if ((err = mallctl("thread.allocated", (void *)&a0, &sz, NULL, 0))) {
+		if (err == ENOENT) {
+			goto label_ENOENT;
+		}
+		test_fail("%s(): Error in mallctl(): %s", __func__,
+		    strerror(err));
+	}
+	sz = sizeof(ap0);
+	if ((err = mallctl("thread.allocatedp", (void *)&ap0, &sz, NULL, 0))) {
+		if (err == ENOENT) {
+			goto label_ENOENT;
+		}
+		test_fail("%s(): Error in mallctl(): %s", __func__,
+		    strerror(err));
+	}
+	expect_u64_eq(*ap0, a0,
+	    "\"thread.allocatedp\" should provide a pointer to internal "
+	    "storage");
+
+	sz = sizeof(d0);
+	if ((err = mallctl("thread.deallocated", (void *)&d0, &sz, NULL, 0))) {
+		if (err == ENOENT) {
+			goto label_ENOENT;
+		}
+		test_fail("%s(): Error in mallctl(): %s", __func__,
+		    strerror(err));
+	}
+	sz = sizeof(dp0);
+	if ((err = mallctl("thread.deallocatedp", (void *)&dp0, &sz, NULL,
+	    0))) {
+		if (err == ENOENT) {
+			goto label_ENOENT;
+		}
+		test_fail("%s(): Error in mallctl(): %s", __func__,
+		    strerror(err));
+	}
+	expect_u64_eq(*dp0, d0,
+	    "\"thread.deallocatedp\" should provide a pointer to internal "
+	    "storage");
+
+	p = malloc(1);
+	expect_ptr_not_null(p, "Unexpected malloc() error");
+
+	sz = sizeof(a1);
+	mallctl("thread.allocated", (void *)&a1, &sz, NULL, 0);
+	sz = sizeof(ap1);
+	mallctl("thread.allocatedp", (void *)&ap1, &sz, NULL, 0);
+	expect_u64_eq(*ap1, a1,
+	    "Dereferenced \"thread.allocatedp\" value should equal "
+	    "\"thread.allocated\" value");
+	expect_ptr_eq(ap0, ap1,
+	    "Pointer returned by \"thread.allocatedp\" should not change");
+
+	usize = TEST_MALLOC_SIZE(p);
+	expect_u64_le(a0 + usize, a1,
+	    "Allocated memory counter should increase by at least the amount "
+	    "explicitly allocated");
+
+	free(p);
+
+	sz = sizeof(d1);
+	mallctl("thread.deallocated", (void *)&d1, &sz, NULL, 0);
+	sz = sizeof(dp1);
+	mallctl("thread.deallocatedp", (void *)&dp1, &sz, NULL, 0);
+	expect_u64_eq(*dp1, d1,
+	    "Dereferenced \"thread.deallocatedp\" value should equal "
+	    "\"thread.deallocated\" value");
+	expect_ptr_eq(dp0, dp1,
+	    "Pointer returned by \"thread.deallocatedp\" should not change");
+
+	expect_u64_le(d0 + usize, d1,
+	    "Deallocated memory counter should increase by at least the amount "
+	    "explicitly deallocated");
+
+	return NULL;
+label_ENOENT:
+	expect_false(config_stats,
+	    "ENOENT should only be returned if stats are disabled");
+	test_skip("\"thread.allocated\" mallctl not available");
+	return NULL;
+}
+
+TEST_BEGIN(test_main_thread) {
+	thd_start(NULL);
+}
+TEST_END
+
+TEST_BEGIN(test_subthread) {
+	thd_t thd;
+
+	thd_create(&thd, thd_start, NULL);
+	thd_join(thd, NULL);
+}
+TEST_END
+
+int
+main(void) {
+	/* Run tests multiple times to check for bad interactions. */
+	return test(
+	    test_main_thread,
+	    test_subthread,
+	    test_main_thread,
+	    test_subthread,
+	    test_main_thread);
+}
diff --git a/deps/jemalloc/test/integration/cpp/basic.cpp b/deps/jemalloc/test/integration/cpp/basic.cpp
new file mode 100644
index 0000000..c1cf6cd
--- /dev/null
+++ b/deps/jemalloc/test/integration/cpp/basic.cpp
@@ -0,0 +1,24 @@
+#include "test/jemalloc_test.h"
+
+TEST_BEGIN(test_basic) {
+	auto foo = new long(4);
+	expect_ptr_not_null(foo, "Unexpected new[] failure");
+	delete foo;
+	// Test nullptr handling.
+	foo = nullptr;
+	delete foo;
+
+	auto bar = new long;
+	expect_ptr_not_null(bar, "Unexpected new failure");
+	delete bar;
+	// Test nullptr handling.
+	bar = nullptr;
+	delete bar;
+}
+TEST_END
+
+int
+main() {
+	return test(
+	    test_basic);
+}
diff --git a/deps/jemalloc/test/integration/cpp/infallible_new_false.cpp b/deps/jemalloc/test/integration/cpp/infallible_new_false.cpp
new file mode 100644
index 0000000..42196d6
--- /dev/null
+++ b/deps/jemalloc/test/integration/cpp/infallible_new_false.cpp
@@ -0,0 +1,23 @@
+#include <memory>
+
+#include "test/jemalloc_test.h"
+
+TEST_BEGIN(test_failing_alloc) {
+	bool saw_exception = false;
+	try {
+		/* Too big of an allocation to succeed. */
+		void *volatile ptr = ::operator new((size_t)-1);
+		(void)ptr;
+	} catch (...) {
+		saw_exception = true;
+	}
+	expect_true(saw_exception, "Didn't get a failure");
+}
+TEST_END
+
+int
+main(void) {
+	return test(
+	    test_failing_alloc);
+}
+
diff --git a/deps/jemalloc/test/integration/cpp/infallible_new_false.sh b/deps/jemalloc/test/integration/cpp/infallible_new_false.sh
new file mode 100644
index 0000000..7d41812
--- /dev/null
+++ b/deps/jemalloc/test/integration/cpp/infallible_new_false.sh
@@ -0,0 +1,8 @@
+#!/bin/sh
+
+XMALLOC_STR=""
+if [ "x${enable_xmalloc}" = "x1" ] ; then
+  XMALLOC_STR="xmalloc:false,"
+fi
+
+export MALLOC_CONF="${XMALLOC_STR}experimental_infallible_new:false"
diff --git a/deps/jemalloc/test/integration/cpp/infallible_new_true.cpp b/deps/jemalloc/test/integration/cpp/infallible_new_true.cpp
new file mode 100644
index 0000000..d675412
--- /dev/null
+++ b/deps/jemalloc/test/integration/cpp/infallible_new_true.cpp
@@ -0,0 +1,67 @@
+#include <stdio.h>
+
+#include "test/jemalloc_test.h"
+
+/*
+ * We can't test C++ in unit tests.  In order to intercept abort, use a secret
+ * safety check abort hook in integration tests.
+ */
+typedef void (*abort_hook_t)(const char *message);
+bool fake_abort_called;
+void fake_abort(const char *message) {
+	if (strcmp(message, "<jemalloc>: Allocation failed and "
+	    "opt.experimental_infallible_new is true. Aborting.\n") != 0) {
+		abort();
+	}
+	fake_abort_called = true;
+}
+
+static bool
+own_operator_new(void) {
+	uint64_t before, after;
+	size_t sz = sizeof(before);
+
+	/* thread.allocated is always available, even w/o config_stats. */
+	expect_d_eq(mallctl("thread.allocated", (void *)&before, &sz, NULL, 0),
+	    0, "Unexpected mallctl failure reading stats");
+	void *volatile ptr = ::operator new((size_t)8);
+	expect_ptr_not_null(ptr, "Unexpected allocation failure");
+	expect_d_eq(mallctl("thread.allocated", (void *)&after, &sz, NULL, 0),
+	    0, "Unexpected mallctl failure reading stats");
+
+	return (after != before);
+}
+
+TEST_BEGIN(test_failing_alloc) {
+	abort_hook_t abort_hook = &fake_abort;
+	expect_d_eq(mallctl("experimental.hooks.safety_check_abort", NULL, NULL,
+	    (void *)&abort_hook, sizeof(abort_hook)), 0,
+	    "Unexpected mallctl failure setting abort hook");
+
+	/*
+	 * Not owning operator new is only expected to happen on MinGW which
+	 * does not support operator new / delete replacement.
+	 */
+#ifdef _WIN32
+	test_skip_if(!own_operator_new());
+#else
+	expect_true(own_operator_new(), "No operator new overload");
+#endif
+	void *volatile ptr = (void *)1;
+	try {
+		/* Too big of an allocation to succeed. */
+		ptr = ::operator new((size_t)-1);
+	} catch (...) {
+		abort();
+	}
+	expect_ptr_null(ptr, "Allocation should have failed");
+	expect_b_eq(fake_abort_called, true, "Abort hook not invoked");
+}
+TEST_END
+
+int
+main(void) {
+	return test(
+	    test_failing_alloc);
+}
+
diff --git a/deps/jemalloc/test/integration/cpp/infallible_new_true.sh b/deps/jemalloc/test/integration/cpp/infallible_new_true.sh
new file mode 100644
index 0000000..4a0ff54
--- /dev/null
+++ b/deps/jemalloc/test/integration/cpp/infallible_new_true.sh
@@ -0,0 +1,8 @@
+#!/bin/sh
+
+XMALLOC_STR=""
+if [ "x${enable_xmalloc}" = "x1" ] ; then
+  XMALLOC_STR="xmalloc:false,"
+fi
+
+export MALLOC_CONF="${XMALLOC_STR}experimental_infallible_new:true"
diff --git a/deps/jemalloc/test/integration/extent.c b/deps/jemalloc/test/integration/extent.c
new file mode 100644
index 0000000..7a028f1
--- /dev/null
+++ b/deps/jemalloc/test/integration/extent.c
@@ -0,0 +1,287 @@
+#include "test/jemalloc_test.h"
+
+#include "test/extent_hooks.h"
+
+#include "jemalloc/internal/arena_types.h"
+
+static void
+test_extent_body(unsigned arena_ind) {
+	void *p;
+	size_t large0, large1, large2, sz;
+	size_t purge_mib[3];
+	size_t purge_miblen;
+	int flags;
+	bool xallocx_success_a, xallocx_success_b, xallocx_success_c;
+
+	flags = MALLOCX_ARENA(arena_ind) | MALLOCX_TCACHE_NONE;
+
+	/* Get large size classes. */
+	sz = sizeof(size_t);
+	expect_d_eq(mallctl("arenas.lextent.0.size", (void *)&large0, &sz, NULL,
+	    0), 0, "Unexpected arenas.lextent.0.size failure");
+	expect_d_eq(mallctl("arenas.lextent.1.size", (void *)&large1, &sz, NULL,
+	    0), 0, "Unexpected arenas.lextent.1.size failure");
+	expect_d_eq(mallctl("arenas.lextent.2.size", (void *)&large2, &sz, NULL,
+	    0), 0, "Unexpected arenas.lextent.2.size failure");
+
+	/* Test dalloc/decommit/purge cascade. */
+	purge_miblen = sizeof(purge_mib)/sizeof(size_t);
+	expect_d_eq(mallctlnametomib("arena.0.purge", purge_mib, &purge_miblen),
+	    0, "Unexpected mallctlnametomib() failure");
+	purge_mib[1] = (size_t)arena_ind;
+	called_alloc = false;
+	try_alloc = true;
+	try_dalloc = false;
+	try_decommit = false;
+	p = mallocx(large0 * 2, flags);
+	expect_ptr_not_null(p, "Unexpected mallocx() error");
+	expect_true(called_alloc, "Expected alloc call");
+	called_dalloc = false;
+	called_decommit = false;
+	did_purge_lazy = false;
+	did_purge_forced = false;
+	called_split = false;
+	xallocx_success_a = (xallocx(p, large0, 0, flags) == large0);
+	expect_d_eq(mallctlbymib(purge_mib, purge_miblen, NULL, NULL, NULL, 0),
+	    0, "Unexpected arena.%u.purge error", arena_ind);
+	if (xallocx_success_a) {
+		expect_true(called_dalloc, "Expected dalloc call");
+		expect_true(called_decommit, "Expected decommit call");
+		expect_true(did_purge_lazy || did_purge_forced,
+		    "Expected purge");
+		expect_true(called_split, "Expected split call");
+	}
+	dallocx(p, flags);
+	try_dalloc = true;
+
+	/* Test decommit/commit and observe split/merge. */
+	try_dalloc = false;
+	try_decommit = true;
+	p = mallocx(large0 * 2, flags);
+	expect_ptr_not_null(p, "Unexpected mallocx() error");
+	did_decommit = false;
+	did_commit = false;
+	called_split = false;
+	did_split = false;
+	did_merge = false;
+	xallocx_success_b = (xallocx(p, large0, 0, flags) == large0);
+	expect_d_eq(mallctlbymib(purge_mib, purge_miblen, NULL, NULL, NULL, 0),
+	    0, "Unexpected arena.%u.purge error", arena_ind);
+	if (xallocx_success_b) {
+		expect_true(did_split, "Expected split");
+	}
+	xallocx_success_c = (xallocx(p, large0 * 2, 0, flags) == large0 * 2);
+	if (did_split) {
+		expect_b_eq(did_decommit, did_commit,
+		    "Expected decommit/commit match");
+	}
+	if (xallocx_success_b && xallocx_success_c) {
+		expect_true(did_merge, "Expected merge");
+	}
+	dallocx(p, flags);
+	try_dalloc = true;
+	try_decommit = false;
+
+	/* Make sure non-large allocation succeeds. */
+	p = mallocx(42, flags);
+	expect_ptr_not_null(p, "Unexpected mallocx() error");
+	dallocx(p, flags);
+}
+
+static void
+test_manual_hook_auto_arena(void) {
+	unsigned narenas;
+	size_t old_size, new_size, sz;
+	size_t hooks_mib[3];
+	size_t hooks_miblen;
+	extent_hooks_t *new_hooks, *old_hooks;
+
+	extent_hooks_prep();
+
+	sz = sizeof(unsigned);
+	/* Get number of auto arenas. */
+	expect_d_eq(mallctl("opt.narenas", (void *)&narenas, &sz, NULL, 0),
+	    0, "Unexpected mallctl() failure");
+	if (narenas == 1) {
+		return;
+	}
+
+	/* Install custom extent hooks on arena 1 (might not be initialized). */
+	hooks_miblen = sizeof(hooks_mib)/sizeof(size_t);
+	expect_d_eq(mallctlnametomib("arena.0.extent_hooks", hooks_mib,
+	    &hooks_miblen), 0, "Unexpected mallctlnametomib() failure");
+	hooks_mib[1] = 1;
+	old_size = sizeof(extent_hooks_t *);
+	new_hooks = &hooks;
+	new_size = sizeof(extent_hooks_t *);
+	expect_d_eq(mallctlbymib(hooks_mib, hooks_miblen, (void *)&old_hooks,
+	    &old_size, (void *)&new_hooks, new_size), 0,
+	    "Unexpected extent_hooks error");
+	static bool auto_arena_created = false;
+	if (old_hooks != &hooks) {
+		expect_b_eq(auto_arena_created, false,
+		    "Expected auto arena 1 created only once.");
+		auto_arena_created = true;
+	}
+}
+
+static void
+test_manual_hook_body(void) {
+	unsigned arena_ind;
+	size_t old_size, new_size, sz;
+	size_t hooks_mib[3];
+	size_t hooks_miblen;
+	extent_hooks_t *new_hooks, *old_hooks;
+
+	extent_hooks_prep();
+
+	sz = sizeof(unsigned);
+	expect_d_eq(mallctl("arenas.create", (void *)&arena_ind, &sz, NULL, 0),
+	    0, "Unexpected mallctl() failure");
+
+	/* Install custom extent hooks. */
+	hooks_miblen = sizeof(hooks_mib)/sizeof(size_t);
+	expect_d_eq(mallctlnametomib("arena.0.extent_hooks", hooks_mib,
+	    &hooks_miblen), 0, "Unexpected mallctlnametomib() failure");
+	hooks_mib[1] = (size_t)arena_ind;
+	old_size = sizeof(extent_hooks_t *);
+	new_hooks = &hooks;
+	new_size = sizeof(extent_hooks_t *);
+	expect_d_eq(mallctlbymib(hooks_mib, hooks_miblen, (void *)&old_hooks,
+	    &old_size, (void *)&new_hooks, new_size), 0,
+	    "Unexpected extent_hooks error");
+	expect_ptr_ne(old_hooks->alloc, extent_alloc_hook,
+	    "Unexpected extent_hooks error");
+	expect_ptr_ne(old_hooks->dalloc, extent_dalloc_hook,
+	    "Unexpected extent_hooks error");
+	expect_ptr_ne(old_hooks->commit, extent_commit_hook,
+	    "Unexpected extent_hooks error");
+	expect_ptr_ne(old_hooks->decommit, extent_decommit_hook,
+	    "Unexpected extent_hooks error");
+	expect_ptr_ne(old_hooks->purge_lazy, extent_purge_lazy_hook,
+	    "Unexpected extent_hooks error");
+	expect_ptr_ne(old_hooks->purge_forced, extent_purge_forced_hook,
+	    "Unexpected extent_hooks error");
+	expect_ptr_ne(old_hooks->split, extent_split_hook,
+	    "Unexpected extent_hooks error");
+	expect_ptr_ne(old_hooks->merge, extent_merge_hook,
+	    "Unexpected extent_hooks error");
+
+	if (!is_background_thread_enabled()) {
+		test_extent_body(arena_ind);
+	}
+
+	/* Restore extent hooks. */
+	expect_d_eq(mallctlbymib(hooks_mib, hooks_miblen, NULL, NULL,
+	    (void *)&old_hooks, new_size), 0, "Unexpected extent_hooks error");
+	expect_d_eq(mallctlbymib(hooks_mib, hooks_miblen, (void *)&old_hooks,
+	    &old_size, NULL, 0), 0, "Unexpected extent_hooks error");
+	expect_ptr_eq(old_hooks, default_hooks, "Unexpected extent_hooks error");
+	expect_ptr_eq(old_hooks->alloc, default_hooks->alloc,
+	    "Unexpected extent_hooks error");
+	expect_ptr_eq(old_hooks->dalloc, default_hooks->dalloc,
+	    "Unexpected extent_hooks error");
+	expect_ptr_eq(old_hooks->commit, default_hooks->commit,
+	    "Unexpected extent_hooks error");
+	expect_ptr_eq(old_hooks->decommit, default_hooks->decommit,
+	    "Unexpected extent_hooks error");
+	expect_ptr_eq(old_hooks->purge_lazy, default_hooks->purge_lazy,
+	    "Unexpected extent_hooks error");
+	expect_ptr_eq(old_hooks->purge_forced, default_hooks->purge_forced,
+	    "Unexpected extent_hooks error");
+	expect_ptr_eq(old_hooks->split, default_hooks->split,
+	    "Unexpected extent_hooks error");
+	expect_ptr_eq(old_hooks->merge, default_hooks->merge,
+	    "Unexpected extent_hooks error");
+}
+
+TEST_BEGIN(test_extent_manual_hook) {
+	test_manual_hook_auto_arena();
+	test_manual_hook_body();
+
+	/* Test failure paths. */
+	try_split = false;
+	test_manual_hook_body();
+	try_merge = false;
+	test_manual_hook_body();
+	try_purge_lazy = false;
+	try_purge_forced = false;
+	test_manual_hook_body();
+
+	try_split = try_merge = try_purge_lazy = try_purge_forced = true;
+}
+TEST_END
+
+TEST_BEGIN(test_extent_auto_hook) {
+	unsigned arena_ind;
+	size_t new_size, sz;
+	extent_hooks_t *new_hooks;
+
+	extent_hooks_prep();
+
+	sz = sizeof(unsigned);
+	new_hooks = &hooks;
+	new_size = sizeof(extent_hooks_t *);
+	expect_d_eq(mallctl("arenas.create", (void *)&arena_ind, &sz,
+	    (void *)&new_hooks, new_size), 0, "Unexpected mallctl() failure");
+
+	test_skip_if(is_background_thread_enabled());
+	test_extent_body(arena_ind);
+}
+TEST_END
+
+static void
+test_arenas_create_ext_base(arena_config_t config,
+	bool expect_hook_data, bool expect_hook_metadata)
+{
+	unsigned arena, arena1;
+	void *ptr;
+	size_t sz = sizeof(unsigned);
+
+	extent_hooks_prep();
+
+	called_alloc = false;
+	expect_d_eq(mallctl("experimental.arenas_create_ext",
+	    (void *)&arena, &sz, &config, sizeof(arena_config_t)), 0,
+	    "Unexpected mallctl() failure");
+	expect_b_eq(called_alloc, expect_hook_metadata,
+	    "expected hook metadata alloc mismatch");
+
+	called_alloc = false;
+	ptr = mallocx(42, MALLOCX_ARENA(arena) | MALLOCX_TCACHE_NONE);
+	expect_b_eq(called_alloc, expect_hook_data,
+	    "expected hook data alloc mismatch");
+
+	expect_ptr_not_null(ptr, "Unexpected mallocx() failure");
+	expect_d_eq(mallctl("arenas.lookup", &arena1, &sz, &ptr, sizeof(ptr)),
+	    0, "Unexpected mallctl() failure");
+	expect_u_eq(arena, arena1, "Unexpected arena index");
+	dallocx(ptr, 0);
+}
+
+TEST_BEGIN(test_arenas_create_ext_with_ehooks_no_metadata) {
+	arena_config_t config;
+	config.extent_hooks = &hooks;
+	config.metadata_use_hooks = false;
+
+	test_arenas_create_ext_base(config, true, false);
+}
+TEST_END
+
+TEST_BEGIN(test_arenas_create_ext_with_ehooks_with_metadata) {
+	arena_config_t config;
+	config.extent_hooks = &hooks;
+	config.metadata_use_hooks = true;
+
+	test_arenas_create_ext_base(config, true, true);
+}
+TEST_END
+
+int
+main(void) {
+	return test(
+	    test_extent_manual_hook,
+	    test_extent_auto_hook,
+	    test_arenas_create_ext_with_ehooks_no_metadata,
+	    test_arenas_create_ext_with_ehooks_with_metadata);
+}
diff --git a/deps/jemalloc/test/integration/extent.sh b/deps/jemalloc/test/integration/extent.sh
new file mode 100644
index 0000000..0cc2187
--- /dev/null
+++ b/deps/jemalloc/test/integration/extent.sh
@@ -0,0 +1,5 @@
+#!/bin/sh
+
+if [ "x${enable_fill}" = "x1" ] ; then
+  export MALLOC_CONF="junk:false"
+fi
diff --git a/deps/jemalloc/test/integration/malloc.c b/deps/jemalloc/test/integration/malloc.c
new file mode 100644
index 0000000..ef44916
--- /dev/null
+++ b/deps/jemalloc/test/integration/malloc.c
@@ -0,0 +1,16 @@
+#include "test/jemalloc_test.h"
+
+TEST_BEGIN(test_zero_alloc) {
+	void *res = malloc(0);
+	assert(res);
+	size_t usable = TEST_MALLOC_SIZE(res);
+	assert(usable > 0);
+	free(res);
+}
+TEST_END
+
+int
+main(void) {
+	return test(
+	    test_zero_alloc);
+}
diff --git a/deps/jemalloc/test/integration/mallocx.c b/deps/jemalloc/test/integration/mallocx.c
new file mode 100644
index 0000000..fdf1e3f
--- /dev/null
+++ b/deps/jemalloc/test/integration/mallocx.c
@@ -0,0 +1,274 @@
+#include "test/jemalloc_test.h"
+
+static unsigned
+get_nsizes_impl(const char *cmd) {
+	unsigned ret;
+	size_t z;
+
+	z = sizeof(unsigned);
+	expect_d_eq(mallctl(cmd, (void *)&ret, &z, NULL, 0), 0,
+	    "Unexpected mallctl(\"%s\", ...) failure", cmd);
+
+	return ret;
+}
+
+static unsigned
+get_nlarge(void) {
+	return get_nsizes_impl("arenas.nlextents");
+}
+
+static size_t
+get_size_impl(const char *cmd, size_t ind) {
+	size_t ret;
+	size_t z;
+	size_t mib[4];
+	size_t miblen = 4;
+
+	z = sizeof(size_t);
+	expect_d_eq(mallctlnametomib(cmd, mib, &miblen),
+	    0, "Unexpected mallctlnametomib(\"%s\", ...) failure", cmd);
+	mib[2] = ind;
+	z = sizeof(size_t);
+	expect_d_eq(mallctlbymib(mib, miblen, (void *)&ret, &z, NULL, 0),
+	    0, "Unexpected mallctlbymib([\"%s\", %zu], ...) failure", cmd, ind);
+
+	return ret;
+}
+
+static size_t
+get_large_size(size_t ind) {
+	return get_size_impl("arenas.lextent.0.size", ind);
+}
+
+/*
+ * On systems which can't merge extents, tests that call this function generate
+ * a lot of dirty memory very quickly.  Purging between cycles mitigates
+ * potential OOM on e.g. 32-bit Windows.
+ */
+static void
+purge(void) {
+	expect_d_eq(mallctl("arena.0.purge", NULL, NULL, NULL, 0), 0,
+	    "Unexpected mallctl error");
+}
+
+/*
+ * GCC "-Walloc-size-larger-than" warning detects when one of the memory
+ * allocation functions is called with a size larger than the maximum size that
+ * they support. Here we want to explicitly test that the allocation functions
+ * do indeed fail properly when this is the case, which triggers the warning.
+ * Therefore we disable the warning for these tests.
+ */
+JEMALLOC_DIAGNOSTIC_PUSH
+JEMALLOC_DIAGNOSTIC_IGNORE_ALLOC_SIZE_LARGER_THAN
+
+TEST_BEGIN(test_overflow) {
+	size_t largemax;
+
+	largemax = get_large_size(get_nlarge()-1);
+
+	expect_ptr_null(mallocx(largemax+1, 0),
+	    "Expected OOM for mallocx(size=%#zx, 0)", largemax+1);
+
+	expect_ptr_null(mallocx(ZU(PTRDIFF_MAX)+1, 0),
+	    "Expected OOM for mallocx(size=%#zx, 0)", ZU(PTRDIFF_MAX)+1);
+
+	expect_ptr_null(mallocx(SIZE_T_MAX, 0),
+	    "Expected OOM for mallocx(size=%#zx, 0)", SIZE_T_MAX);
+
+	expect_ptr_null(mallocx(1, MALLOCX_ALIGN(ZU(PTRDIFF_MAX)+1)),
+	    "Expected OOM for mallocx(size=1, MALLOCX_ALIGN(%#zx))",
+	    ZU(PTRDIFF_MAX)+1);
+}
+TEST_END
+
+static void *
+remote_alloc(void *arg) {
+	unsigned arena;
+	size_t sz = sizeof(unsigned);
+	expect_d_eq(mallctl("arenas.create", (void *)&arena, &sz, NULL, 0), 0,
+	    "Unexpected mallctl() failure");
+	size_t large_sz;
+	sz = sizeof(size_t);
+	expect_d_eq(mallctl("arenas.lextent.0.size", (void *)&large_sz, &sz,
+	    NULL, 0), 0, "Unexpected mallctl failure");
+
+	void *ptr = mallocx(large_sz, MALLOCX_ARENA(arena)
+	    | MALLOCX_TCACHE_NONE);
+	void **ret = (void **)arg;
+	*ret = ptr;
+
+	return NULL;
+}
+
+TEST_BEGIN(test_remote_free) {
+	thd_t thd;
+	void *ret;
+	thd_create(&thd, remote_alloc, (void *)&ret);
+	thd_join(thd, NULL);
+	expect_ptr_not_null(ret, "Unexpected mallocx failure");
+
+	/* Avoid TCACHE_NONE to explicitly test tcache_flush(). */
+	dallocx(ret, 0);
+	mallctl("thread.tcache.flush", NULL, NULL, NULL, 0);
+}
+TEST_END
+
+TEST_BEGIN(test_oom) {
+	size_t largemax;
+	bool oom;
+	void *ptrs[3];
+	unsigned i;
+
+	/*
+	 * It should be impossible to allocate three objects that each consume
+	 * nearly half the virtual address space.
+	 */
+	largemax = get_large_size(get_nlarge()-1);
+	oom = false;
+	for (i = 0; i < sizeof(ptrs) / sizeof(void *); i++) {
+		ptrs[i] = mallocx(largemax, MALLOCX_ARENA(0));
+		if (ptrs[i] == NULL) {
+			oom = true;
+		}
+	}
+	expect_true(oom,
+	    "Expected OOM during series of calls to mallocx(size=%zu, 0)",
+	    largemax);
+	for (i = 0; i < sizeof(ptrs) / sizeof(void *); i++) {
+		if (ptrs[i] != NULL) {
+			dallocx(ptrs[i], 0);
+		}
+	}
+	purge();
+
+#if LG_SIZEOF_PTR == 3
+	expect_ptr_null(mallocx(0x8000000000000000ULL,
+	    MALLOCX_ALIGN(0x8000000000000000ULL)),
+	    "Expected OOM for mallocx()");
+	expect_ptr_null(mallocx(0x8000000000000000ULL,
+	    MALLOCX_ALIGN(0x80000000)),
+	    "Expected OOM for mallocx()");
+#else
+	expect_ptr_null(mallocx(0x80000000UL, MALLOCX_ALIGN(0x80000000UL)),
+	    "Expected OOM for mallocx()");
+#endif
+}
+TEST_END
+
+/* Re-enable the "-Walloc-size-larger-than=" warning */
+JEMALLOC_DIAGNOSTIC_POP
+
+TEST_BEGIN(test_basic) {
+#define MAXSZ (((size_t)1) << 23)
+	size_t sz;
+
+	for (sz = 1; sz < MAXSZ; sz = nallocx(sz, 0) + 1) {
+		size_t nsz, rsz;
+		void *p;
+		nsz = nallocx(sz, 0);
+		expect_zu_ne(nsz, 0, "Unexpected nallocx() error");
+		p = mallocx(sz, 0);
+		expect_ptr_not_null(p,
+		    "Unexpected mallocx(size=%zx, flags=0) error", sz);
+		rsz = sallocx(p, 0);
+		expect_zu_ge(rsz, sz, "Real size smaller than expected");
+		expect_zu_eq(nsz, rsz, "nallocx()/sallocx() size mismatch");
+		dallocx(p, 0);
+
+		p = mallocx(sz, 0);
+		expect_ptr_not_null(p,
+		    "Unexpected mallocx(size=%zx, flags=0) error", sz);
+		dallocx(p, 0);
+
+		nsz = nallocx(sz, MALLOCX_ZERO);
+		expect_zu_ne(nsz, 0, "Unexpected nallocx() error");
+		p = mallocx(sz, MALLOCX_ZERO);
+		expect_ptr_not_null(p,
+		    "Unexpected mallocx(size=%zx, flags=MALLOCX_ZERO) error",
+		    nsz);
+		rsz = sallocx(p, 0);
+		expect_zu_eq(nsz, rsz, "nallocx()/sallocx() rsize mismatch");
+		dallocx(p, 0);
+		purge();
+	}
+#undef MAXSZ
+}
+TEST_END
+
+TEST_BEGIN(test_alignment_and_size) {
+	const char *percpu_arena;
+	size_t sz = sizeof(percpu_arena);
+
+	if(mallctl("opt.percpu_arena", (void *)&percpu_arena, &sz, NULL, 0) ||
+	    strcmp(percpu_arena, "disabled") != 0) {
+		test_skip("test_alignment_and_size skipped: "
+		    "not working with percpu arena.");
+	};
+#define MAXALIGN (((size_t)1) << 23)
+#define NITER 4
+	size_t nsz, rsz, alignment, total;
+	unsigned i;
+	void *ps[NITER];
+
+	for (i = 0; i < NITER; i++) {
+		ps[i] = NULL;
+	}
+
+	for (alignment = 8;
+	    alignment <= MAXALIGN;
+	    alignment <<= 1) {
+		total = 0;
+		for (sz = 1;
+		    sz < 3 * alignment && sz < (1U << 31);
+		    sz += (alignment >> (LG_SIZEOF_PTR-1)) - 1) {
+			for (i = 0; i < NITER; i++) {
+				nsz = nallocx(sz, MALLOCX_ALIGN(alignment) |
+				    MALLOCX_ZERO | MALLOCX_ARENA(0));
+				expect_zu_ne(nsz, 0,
+				    "nallocx() error for alignment=%zu, "
+				    "size=%zu (%#zx)", alignment, sz, sz);
+				ps[i] = mallocx(sz, MALLOCX_ALIGN(alignment) |
+				    MALLOCX_ZERO | MALLOCX_ARENA(0));
+				expect_ptr_not_null(ps[i],
+				    "mallocx() error for alignment=%zu, "
+				    "size=%zu (%#zx)", alignment, sz, sz);
+				rsz = sallocx(ps[i], 0);
+				expect_zu_ge(rsz, sz,
+				    "Real size smaller than expected for "
+				    "alignment=%zu, size=%zu", alignment, sz);
+				expect_zu_eq(nsz, rsz,
+				    "nallocx()/sallocx() size mismatch for "
+				    "alignment=%zu, size=%zu", alignment, sz);
+				expect_ptr_null(
+				    (void *)((uintptr_t)ps[i] & (alignment-1)),
+				    "%p inadequately aligned for"
+				    " alignment=%zu, size=%zu", ps[i],
+				    alignment, sz);
+				total += rsz;
+				if (total >= (MAXALIGN << 1)) {
+					break;
+				}
+			}
+			for (i = 0; i < NITER; i++) {
+				if (ps[i] != NULL) {
+					dallocx(ps[i], 0);
+					ps[i] = NULL;
+				}
+			}
+		}
+		purge();
+	}
+#undef MAXALIGN
+#undef NITER
+}
+TEST_END
+
+int
+main(void) {
+	return test(
+	    test_overflow,
+	    test_oom,
+	    test_remote_free,
+	    test_basic,
+	    test_alignment_and_size);
+}
diff --git a/deps/jemalloc/test/integration/mallocx.sh b/deps/jemalloc/test/integration/mallocx.sh
new file mode 100644
index 0000000..0cc2187
--- /dev/null
+++ b/deps/jemalloc/test/integration/mallocx.sh
@@ -0,0 +1,5 @@
+#!/bin/sh
+
+if [ "x${enable_fill}" = "x1" ] ; then
+  export MALLOC_CONF="junk:false"
+fi
diff --git a/deps/jemalloc/test/integration/overflow.c b/deps/jemalloc/test/integration/overflow.c
new file mode 100644
index 0000000..ce63327
--- /dev/null
+++ b/deps/jemalloc/test/integration/overflow.c
@@ -0,0 +1,59 @@
+#include "test/jemalloc_test.h"
+
+/*
+ * GCC "-Walloc-size-larger-than" warning detects when one of the memory
+ * allocation functions is called with a size larger than the maximum size that
+ * they support. Here we want to explicitly test that the allocation functions
+ * do indeed fail properly when this is the case, which triggers the warning.
+ * Therefore we disable the warning for these tests.
+ */
+JEMALLOC_DIAGNOSTIC_PUSH
+JEMALLOC_DIAGNOSTIC_IGNORE_ALLOC_SIZE_LARGER_THAN
+
+TEST_BEGIN(test_overflow) {
+	unsigned nlextents;
+	size_t mib[4];
+	size_t sz, miblen, max_size_class;
+	void *p;
+
+	sz = sizeof(unsigned);
+	expect_d_eq(mallctl("arenas.nlextents", (void *)&nlextents, &sz, NULL,
+	    0), 0, "Unexpected mallctl() error");
+
+	miblen = sizeof(mib) / sizeof(size_t);
+	expect_d_eq(mallctlnametomib("arenas.lextent.0.size", mib, &miblen), 0,
+	    "Unexpected mallctlnametomib() error");
+	mib[2] = nlextents - 1;
+
+	sz = sizeof(size_t);
+	expect_d_eq(mallctlbymib(mib, miblen, (void *)&max_size_class, &sz,
+	    NULL, 0), 0, "Unexpected mallctlbymib() error");
+
+	expect_ptr_null(malloc(max_size_class + 1),
+	    "Expected OOM due to over-sized allocation request");
+	expect_ptr_null(malloc(SIZE_T_MAX),
+	    "Expected OOM due to over-sized allocation request");
+
+	expect_ptr_null(calloc(1, max_size_class + 1),
+	    "Expected OOM due to over-sized allocation request");
+	expect_ptr_null(calloc(1, SIZE_T_MAX),
+	    "Expected OOM due to over-sized allocation request");
+
+	p = malloc(1);
+	expect_ptr_not_null(p, "Unexpected malloc() OOM");
+	expect_ptr_null(realloc(p, max_size_class + 1),
+	    "Expected OOM due to over-sized allocation request");
+	expect_ptr_null(realloc(p, SIZE_T_MAX),
+	    "Expected OOM due to over-sized allocation request");
+	free(p);
+}
+TEST_END
+
+/* Re-enable the "-Walloc-size-larger-than=" warning */
+JEMALLOC_DIAGNOSTIC_POP
+
+int
+main(void) {
+	return test(
+	    test_overflow);
+}
diff --git a/deps/jemalloc/test/integration/posix_memalign.c b/deps/jemalloc/test/integration/posix_memalign.c
new file mode 100644
index 0000000..2da0549
--- /dev/null
+++ b/deps/jemalloc/test/integration/posix_memalign.c
@@ -0,0 +1,128 @@
+#include "test/jemalloc_test.h"
+
+#define MAXALIGN (((size_t)1) << 23)
+
+/*
+ * On systems which can't merge extents, tests that call this function generate
+ * a lot of dirty memory very quickly.  Purging between cycles mitigates
+ * potential OOM on e.g. 32-bit Windows.
+ */
+static void
+purge(void) {
+	expect_d_eq(mallctl("arena.0.purge", NULL, NULL, NULL, 0), 0,
+	    "Unexpected mallctl error");
+}
+
+TEST_BEGIN(test_alignment_errors) {
+	size_t alignment;
+	void *p;
+
+	for (alignment = 0; alignment < sizeof(void *); alignment++) {
+		expect_d_eq(posix_memalign(&p, alignment, 1), EINVAL,
+		    "Expected error for invalid alignment %zu",
+		    alignment);
+	}
+
+	for (alignment = sizeof(size_t); alignment < MAXALIGN;
+	    alignment <<= 1) {
+		expect_d_ne(posix_memalign(&p, alignment + 1, 1), 0,
+		    "Expected error for invalid alignment %zu",
+		    alignment + 1);
+	}
+}
+TEST_END
+
+TEST_BEGIN(test_oom_errors) {
+	size_t alignment, size;
+	void *p;
+
+#if LG_SIZEOF_PTR == 3
+	alignment = UINT64_C(0x8000000000000000);
+	size      = UINT64_C(0x8000000000000000);
+#else
+	alignment = 0x80000000LU;
+	size      = 0x80000000LU;
+#endif
+	expect_d_ne(posix_memalign(&p, alignment, size), 0,
+	    "Expected error for posix_memalign(&p, %zu, %zu)",
+	    alignment, size);
+
+#if LG_SIZEOF_PTR == 3
+	alignment = UINT64_C(0x4000000000000000);
+	size      = UINT64_C(0xc000000000000001);
+#else
+	alignment = 0x40000000LU;
+	size      = 0xc0000001LU;
+#endif
+	expect_d_ne(posix_memalign(&p, alignment, size), 0,
+	    "Expected error for posix_memalign(&p, %zu, %zu)",
+	    alignment, size);
+
+	alignment = 0x10LU;
+#if LG_SIZEOF_PTR == 3
+	size = UINT64_C(0xfffffffffffffff0);
+#else
+	size = 0xfffffff0LU;
+#endif
+	expect_d_ne(posix_memalign(&p, alignment, size), 0,
+	    "Expected error for posix_memalign(&p, %zu, %zu)",
+	    alignment, size);
+}
+TEST_END
+
+TEST_BEGIN(test_alignment_and_size) {
+#define NITER 4
+	size_t alignment, size, total;
+	unsigned i;
+	int err;
+	void *ps[NITER];
+
+	for (i = 0; i < NITER; i++) {
+		ps[i] = NULL;
+	}
+
+	for (alignment = 8;
+	    alignment <= MAXALIGN;
+	    alignment <<= 1) {
+		total = 0;
+		for (size = 0;
+		    size < 3 * alignment && size < (1U << 31);
+		    size += ((size == 0) ? 1 :
+		    (alignment >> (LG_SIZEOF_PTR-1)) - 1)) {
+			for (i = 0; i < NITER; i++) {
+				err = posix_memalign(&ps[i],
+				    alignment, size);
+				if (err) {
+					char buf[BUFERROR_BUF];
+
+					buferror(get_errno(), buf, sizeof(buf));
+					test_fail(
+					    "Error for alignment=%zu, "
+					    "size=%zu (%#zx): %s",
+					    alignment, size, size, buf);
+				}
+				total += TEST_MALLOC_SIZE(ps[i]);
+				if (total >= (MAXALIGN << 1)) {
+					break;
+				}
+			}
+			for (i = 0; i < NITER; i++) {
+				if (ps[i] != NULL) {
+					free(ps[i]);
+					ps[i] = NULL;
+				}
+			}
+		}
+		purge();
+	}
+#undef NITER
+}
+TEST_END
+
+int
+main(void) {
+	return test(
+	    test_alignment_errors,
+	    test_oom_errors,
+	    test_alignment_and_size);
+}
diff --git a/deps/jemalloc/test/integration/rallocx.c b/deps/jemalloc/test/integration/rallocx.c
new file mode 100644
index 0000000..68b8f38
--- /dev/null
+++ b/deps/jemalloc/test/integration/rallocx.c
@@ -0,0 +1,308 @@
+#include "test/jemalloc_test.h"
+
+static unsigned
+get_nsizes_impl(const char *cmd) {
+	unsigned ret;
+	size_t z;
+
+	z = sizeof(unsigned);
+	expect_d_eq(mallctl(cmd, (void *)&ret, &z, NULL, 0), 0,
+	    "Unexpected mallctl(\"%s\", ...) failure", cmd);
+
+	return ret;
+}
+
+static unsigned
+get_nlarge(void) {
+	return get_nsizes_impl("arenas.nlextents");
+}
+
+static size_t
+get_size_impl(const char *cmd, size_t ind) {
+	size_t ret;
+	size_t z;
+	size_t mib[4];
+	size_t miblen = 4;
+
+	z = sizeof(size_t);
+	expect_d_eq(mallctlnametomib(cmd, mib, &miblen),
+	    0, "Unexpected mallctlnametomib(\"%s\", ...) failure", cmd);
+	mib[2] = ind;
+	z = sizeof(size_t);
+	expect_d_eq(mallctlbymib(mib, miblen, (void *)&ret, &z, NULL, 0),
+	    0, "Unexpected mallctlbymib([\"%s\", %zu], ...) failure", cmd, ind);
+
+	return ret;
+}
+
+static size_t
+get_large_size(size_t ind) {
+	return get_size_impl("arenas.lextent.0.size", ind);
+}
+
+TEST_BEGIN(test_grow_and_shrink) {
+	/*
+	 * Use volatile to workaround buffer overflow false positives
+	 * (-D_FORTIFY_SOURCE=3).
+	 */
+	void *volatile p, *volatile q;
+	size_t tsz;
+#define NCYCLES 3
+	unsigned i, j;
+#define NSZS 1024
+	size_t szs[NSZS];
+#define MAXSZ ZU(12 * 1024 * 1024)
+
+	p = mallocx(1, 0);
+	expect_ptr_not_null(p, "Unexpected mallocx() error");
+	szs[0] = sallocx(p, 0);
+
+	for (i = 0; i < NCYCLES; i++) {
+		for (j = 1; j < NSZS && szs[j-1] < MAXSZ; j++) {
+			q = rallocx(p, szs[j-1]+1, 0);
+			expect_ptr_not_null(q,
+			    "Unexpected rallocx() error for size=%zu-->%zu",
+			    szs[j-1], szs[j-1]+1);
+			szs[j] = sallocx(q, 0);
+			expect_zu_ne(szs[j], szs[j-1]+1,
+			    "Expected size to be at least: %zu", szs[j-1]+1);
+			p = q;
+		}
+
+		for (j--; j > 0; j--) {
+			q = rallocx(p, szs[j-1], 0);
+			expect_ptr_not_null(q,
+			    "Unexpected rallocx() error for size=%zu-->%zu",
+			    szs[j], szs[j-1]);
+			tsz = sallocx(q, 0);
+			expect_zu_eq(tsz, szs[j-1],
+			    "Expected size=%zu, got size=%zu", szs[j-1], tsz);
+			p = q;
+		}
+	}
+
+	dallocx(p, 0);
+#undef MAXSZ
+#undef NSZS
+#undef NCYCLES
+}
+TEST_END
+
+static bool
+validate_fill(void *p, uint8_t c, size_t offset, size_t len) {
+	bool ret = false;
+	/*
+	 * Use volatile to workaround buffer overflow false positives
+	 * (-D_FORTIFY_SOURCE=3).
+	 */
+	uint8_t *volatile buf = (uint8_t *)p;
+	size_t i;
+
+	for (i = 0; i < len; i++) {
+		uint8_t b = buf[offset+i];
+		if (b != c) {
+			test_fail("Allocation at %p (len=%zu) contains %#x "
+			    "rather than %#x at offset %zu", p, len, b, c,
+			    offset+i);
+			ret = true;
+		}
+	}
+
+	return ret;
+}
+
+TEST_BEGIN(test_zero) {
+	/*
+	 * Use volatile to workaround buffer overflow false positives
+	 * (-D_FORTIFY_SOURCE=3).
+	 */
+	void *volatile p, *volatile q;
+	size_t psz, qsz, i, j;
+	size_t start_sizes[] = {1, 3*1024, 63*1024, 4095*1024};
+#define FILL_BYTE 0xaaU
+#define RANGE 2048
+
+	for (i = 0; i < sizeof(start_sizes)/sizeof(size_t); i++) {
+		size_t start_size = start_sizes[i];
+		p = mallocx(start_size, MALLOCX_ZERO);
+		expect_ptr_not_null(p, "Unexpected mallocx() error");
+		psz = sallocx(p, 0);
+
+		expect_false(validate_fill(p, 0, 0, psz),
+		    "Expected zeroed memory");
+		memset(p, FILL_BYTE, psz);
+		expect_false(validate_fill(p, FILL_BYTE, 0, psz),
+		    "Expected filled memory");
+
+		for (j = 1; j < RANGE; j++) {
+			q = rallocx(p, start_size+j, MALLOCX_ZERO);
+			expect_ptr_not_null(q, "Unexpected rallocx() error");
+			qsz = sallocx(q, 0);
+			if (q != p || qsz != psz) {
+				expect_false(validate_fill(q, FILL_BYTE, 0,
+				    psz), "Expected filled memory");
+				expect_false(validate_fill(q, 0, psz, qsz-psz),
+				    "Expected zeroed memory");
+			}
+			if (psz != qsz) {
+				memset((void *)((uintptr_t)q+psz), FILL_BYTE,
+				    qsz-psz);
+				psz = qsz;
+			}
+			p = q;
+		}
+		expect_false(validate_fill(p, FILL_BYTE, 0, psz),
+		    "Expected filled memory");
+		dallocx(p, 0);
+	}
+#undef FILL_BYTE
+}
+TEST_END
+
+TEST_BEGIN(test_align) {
+	void *p, *q;
+	size_t align;
+#define MAX_ALIGN (ZU(1) << 25)
+
+	align = ZU(1);
+	p = mallocx(1, MALLOCX_ALIGN(align));
+	expect_ptr_not_null(p, "Unexpected mallocx() error");
+
+	for (align <<= 1; align <= MAX_ALIGN; align <<= 1) {
+		q = rallocx(p, 1, MALLOCX_ALIGN(align));
+		expect_ptr_not_null(q,
+		    "Unexpected rallocx() error for align=%zu", align);
+		expect_ptr_null(
+		    (void *)((uintptr_t)q & (align-1)),
+		    "%p inadequately aligned for align=%zu",
+		    q, align);
+		p = q;
+	}
+	dallocx(p, 0);
+#undef MAX_ALIGN
+}
+TEST_END
+
+TEST_BEGIN(test_align_enum) {
+/* Span both small sizes and large sizes. */
+#define LG_MIN 12
+#define LG_MAX 15
+	for (size_t lg_align = LG_MIN; lg_align <= LG_MAX; ++lg_align) {
+		for (size_t lg_size = LG_MIN; lg_size <= LG_MAX; ++lg_size) {
+			size_t size = 1 << lg_size;
+			for (size_t lg_align_next = LG_MIN;
+			    lg_align_next <= LG_MAX; ++lg_align_next) {
+				int flags = MALLOCX_LG_ALIGN(lg_align);
+				void *p = mallocx(1, flags);
+				assert_ptr_not_null(p,
+				    "Unexpected mallocx() error");
+				assert_zu_eq(nallocx(1, flags),
+				    TEST_MALLOC_SIZE(p),
+				    "Wrong mallocx() usable size");
+				int flags_next =
+				    MALLOCX_LG_ALIGN(lg_align_next);
+				p = rallocx(p, size, flags_next);
+				assert_ptr_not_null(p,
+				    "Unexpected rallocx() error");
+				expect_zu_eq(nallocx(size, flags_next),
+				    TEST_MALLOC_SIZE(p),
+				    "Wrong rallocx() usable size");
+				free(p);
+			}
+		}
+	}
+#undef LG_MAX
+#undef LG_MIN
+}
+TEST_END
+
+TEST_BEGIN(test_lg_align_and_zero) {
+	/*
+	 * Use volatile to workaround buffer overflow false positives
+	 * (-D_FORTIFY_SOURCE=3).
+	 */
+	void *volatile p, *volatile q;
+	unsigned lg_align;
+	size_t sz;
+#define MAX_LG_ALIGN 25
+#define MAX_VALIDATE (ZU(1) << 22)
+
+	lg_align = 0;
+	p = mallocx(1, MALLOCX_LG_ALIGN(lg_align)|MALLOCX_ZERO);
+	expect_ptr_not_null(p, "Unexpected mallocx() error");
+
+	for (lg_align++; lg_align <= MAX_LG_ALIGN; lg_align++) {
+		q = rallocx(p, 1, MALLOCX_LG_ALIGN(lg_align)|MALLOCX_ZERO);
+		expect_ptr_not_null(q,
+		    "Unexpected rallocx() error for lg_align=%u", lg_align);
+		expect_ptr_null(
+		    (void *)((uintptr_t)q & ((ZU(1) << lg_align)-1)),
+		    "%p inadequately aligned for lg_align=%u", q, lg_align);
+		sz = sallocx(q, 0);
+		if ((sz << 1) <= MAX_VALIDATE) {
+			expect_false(validate_fill(q, 0, 0, sz),
+			    "Expected zeroed memory");
+		} else {
+			expect_false(validate_fill(q, 0, 0, MAX_VALIDATE),
+			    "Expected zeroed memory");
+			expect_false(validate_fill(
+			    (void *)((uintptr_t)q+sz-MAX_VALIDATE),
+			    0, 0, MAX_VALIDATE), "Expected zeroed memory");
+		}
+		p = q;
+	}
+	dallocx(p, 0);
+#undef MAX_VALIDATE
+#undef MAX_LG_ALIGN
+}
+TEST_END
+
+/*
+ * GCC "-Walloc-size-larger-than" warning detects when one of the memory
+ * allocation functions is called with a size larger than the maximum size that
+ * they support. Here we want to explicitly test that the allocation functions
+ * do indeed fail properly when this is the case, which triggers the warning.
+ * Therefore we disable the warning for these tests.
+ */
+JEMALLOC_DIAGNOSTIC_PUSH
+JEMALLOC_DIAGNOSTIC_IGNORE_ALLOC_SIZE_LARGER_THAN
+
+TEST_BEGIN(test_overflow) {
+	size_t largemax;
+	void *p;
+
+	largemax = get_large_size(get_nlarge()-1);
+
+	p = mallocx(1, 0);
+	expect_ptr_not_null(p, "Unexpected mallocx() failure");
+
+	expect_ptr_null(rallocx(p, largemax+1, 0),
+	    "Expected OOM for rallocx(p, size=%#zx, 0)", largemax+1);
+
+	expect_ptr_null(rallocx(p, ZU(PTRDIFF_MAX)+1, 0),
+	    "Expected OOM for rallocx(p, size=%#zx, 0)", ZU(PTRDIFF_MAX)+1);
+
+	expect_ptr_null(rallocx(p, SIZE_T_MAX, 0),
+	    "Expected OOM for rallocx(p, size=%#zx, 0)", SIZE_T_MAX);
+
+	expect_ptr_null(rallocx(p, 1, MALLOCX_ALIGN(ZU(PTRDIFF_MAX)+1)),
+	    "Expected OOM for rallocx(p, size=1, MALLOCX_ALIGN(%#zx))",
+	    ZU(PTRDIFF_MAX)+1);
+
+	dallocx(p, 0);
+}
+TEST_END
+
+/* Re-enable the "-Walloc-size-larger-than=" warning */
+JEMALLOC_DIAGNOSTIC_POP
+
+int
+main(void) {
+	return test(
+	    test_grow_and_shrink,
+	    test_zero,
+	    test_align,
+	    test_align_enum,
+	    test_lg_align_and_zero,
+	    test_overflow);
+}
diff --git a/deps/jemalloc/test/integration/sdallocx.c b/deps/jemalloc/test/integration/sdallocx.c
new file mode 100644
index 0000000..ca01448
--- /dev/null
+++ b/deps/jemalloc/test/integration/sdallocx.c
@@ -0,0 +1,55 @@
+#include "test/jemalloc_test.h"
+
+#define MAXALIGN (((size_t)1) << 22)
+#define NITER 3
+
+TEST_BEGIN(test_basic) {
+	void *ptr = mallocx(64, 0);
+	sdallocx(ptr, 64, 0);
+}
+TEST_END
+
+TEST_BEGIN(test_alignment_and_size) {
+	size_t nsz, sz, alignment, total;
+	unsigned i;
+	void *ps[NITER];
+
+	for (i = 0; i < NITER; i++) {
+		ps[i] = NULL;
+	}
+
+	for (alignment = 8;
+	    alignment <= MAXALIGN;
+	    alignment <<= 1) {
+		total = 0;
+		for (sz = 1;
+		    sz < 3 * alignment && sz < (1U << 31);
+		    sz += (alignment >> (LG_SIZEOF_PTR-1)) - 1) {
+			for (i = 0; i < NITER; i++) {
+				nsz = nallocx(sz, MALLOCX_ALIGN(alignment) |
+				    MALLOCX_ZERO);
+				ps[i] = mallocx(sz, MALLOCX_ALIGN(alignment) |
+				    MALLOCX_ZERO);
+				total += nsz;
+				if (total >= (MAXALIGN << 1)) {
+					break;
+				}
+			}
+			for (i = 0; i < NITER; i++) {
+				if (ps[i] != NULL) {
+					sdallocx(ps[i], sz,
+					    MALLOCX_ALIGN(alignment));
+					ps[i] = NULL;
+				}
+			}
+		}
+	}
+}
+TEST_END
+
+int
+main(void) {
+	return test_no_reentrancy(
+	    test_basic,
+	    test_alignment_and_size);
+}
diff --git a/deps/jemalloc/test/integration/slab_sizes.c b/deps/jemalloc/test/integration/slab_sizes.c
new file mode 100644
index 0000000..f6a66f2
--- /dev/null
+++ b/deps/jemalloc/test/integration/slab_sizes.c
@@ -0,0 +1,80 @@
+#include "test/jemalloc_test.h"
+
+/* Note that this test relies on the unusual slab sizes set in slab_sizes.sh. */
+
+TEST_BEGIN(test_slab_sizes) {
+	unsigned nbins;
+	size_t page;
+	size_t sizemib[4];
+	size_t slabmib[4];
+	size_t len;
+
+	len = sizeof(nbins);
+	expect_d_eq(mallctl("arenas.nbins", &nbins, &len, NULL, 0), 0,
+	    "nbins mallctl failure");
+
+	len = sizeof(page);
+	expect_d_eq(mallctl("arenas.page", &page, &len, NULL, 0), 0,
+	    "page mallctl failure");
+
+	len = 4;
+	expect_d_eq(mallctlnametomib("arenas.bin.0.size", sizemib, &len), 0,
+	    "bin size mallctlnametomib failure");
+
+	len = 4;
+	expect_d_eq(mallctlnametomib("arenas.bin.0.slab_size", slabmib, &len),
+	    0, "slab size mallctlnametomib failure");
+
+	size_t biggest_slab_seen = 0;
+
+	for (unsigned i = 0; i < nbins; i++) {
+		size_t bin_size;
+		size_t slab_size;
+		len = sizeof(size_t);
+		sizemib[2] = i;
+		slabmib[2] = i;
+		expect_d_eq(mallctlbymib(sizemib, 4, (void *)&bin_size, &len,
+		    NULL, 0), 0, "bin size mallctlbymib failure");
+
+		len = sizeof(size_t);
+		expect_d_eq(mallctlbymib(slabmib, 4, (void *)&slab_size, &len,
+		    NULL, 0), 0, "slab size mallctlbymib failure");
+
+		if (bin_size < 100) {
+			/*
+			 * Then we should be as close to 17 as possible.  Since
+			 * not all page sizes are valid (because of bitmap
+			 * limitations on the number of items in a slab), we
+			 * should at least make sure that the number of pages
+			 * goes up.
+			 */
+			expect_zu_ge(slab_size, biggest_slab_seen,
+			    "Slab sizes should go up");
+			biggest_slab_seen = slab_size;
+		} else if (
+		    (100 <= bin_size && bin_size < 128)
+		    || (128 < bin_size && bin_size <= 200)) {
+			expect_zu_eq(slab_size, page,
+			    "Forced-small slabs should be small");
+		} else if (bin_size == 128) {
+			expect_zu_eq(slab_size, 2 * page,
+			    "Forced-2-page slab should be 2 pages");
+		} else if (200 < bin_size && bin_size <= 4096) {
+			expect_zu_ge(slab_size, biggest_slab_seen,
+			    "Slab sizes should go up");
+			biggest_slab_seen = slab_size;
+		}
+	}
+	/*
+	 * For any reasonable configuration, 17 pages should be a valid slab
+	 * size for 4096-byte items.
+	 */
+	expect_zu_eq(biggest_slab_seen, 17 * page, "Didn't hit page target");
+}
+TEST_END
+
+int
+main(void) {
+	return test(
+	    test_slab_sizes);
+}
diff --git a/deps/jemalloc/test/integration/slab_sizes.sh b/deps/jemalloc/test/integration/slab_sizes.sh
new file mode 100644
index 0000000..07e3db8
--- /dev/null
+++ b/deps/jemalloc/test/integration/slab_sizes.sh
@@ -0,0 +1,4 @@
+#!/bin/sh
+
+# Some screwy-looking slab sizes.
+export MALLOC_CONF="slab_sizes:1-4096:17|100-200:1|128-128:2"
diff --git a/deps/jemalloc/test/integration/smallocx.c b/deps/jemalloc/test/integration/smallocx.c
new file mode 100644
index 0000000..389319b
--- /dev/null
+++ b/deps/jemalloc/test/integration/smallocx.c
@@ -0,0 +1,312 @@
+#include "test/jemalloc_test.h"
+#include "jemalloc/jemalloc_macros.h"
+
+#define STR_HELPER(x) #x
+#define STR(x) STR_HELPER(x)
+
+#ifndef JEMALLOC_VERSION_GID_IDENT
+  #error "JEMALLOC_VERSION_GID_IDENT not defined"
+#endif
+
+#define JOIN(x, y) x ## y
+#define JOIN2(x, y) JOIN(x, y)
+#define smallocx JOIN2(smallocx_, JEMALLOC_VERSION_GID_IDENT)
+
+typedef struct {
+	void *ptr;
+	size_t size;
+} smallocx_return_t;
+
+extern smallocx_return_t
+smallocx(size_t size, int flags);
+
+static unsigned
+get_nsizes_impl(const char *cmd) {
+	unsigned ret;
+	size_t z;
+
+	z = sizeof(unsigned);
+	expect_d_eq(mallctl(cmd, (void *)&ret, &z, NULL, 0), 0,
+	    "Unexpected mallctl(\"%s\", ...) failure", cmd);
+
+	return ret;
+}
+
+static unsigned
+get_nlarge(void) {
+	return get_nsizes_impl("arenas.nlextents");
+}
+
+static size_t
+get_size_impl(const char *cmd, size_t ind) {
+	size_t ret;
+	size_t z;
+	size_t mib[4];
+	size_t miblen = 4;
+
+	z = sizeof(size_t);
+	expect_d_eq(mallctlnametomib(cmd, mib, &miblen),
+	    0, "Unexpected mallctlnametomib(\"%s\", ...) failure", cmd);
+	mib[2] = ind;
+	z = sizeof(size_t);
+	expect_d_eq(mallctlbymib(mib, miblen, (void *)&ret, &z, NULL, 0),
+	    0, "Unexpected mallctlbymib([\"%s\", %zu], ...) failure", cmd, ind);
+
+	return ret;
+}
+
+static size_t
+get_large_size(size_t ind) {
+	return get_size_impl("arenas.lextent.0.size", ind);
+}
+
+/*
+ * On systems which can't merge extents, tests that call this function generate
+ * a lot of dirty memory very quickly.  Purging between cycles mitigates
+ * potential OOM on e.g. 32-bit Windows.
+ */
+static void
+purge(void) {
+	expect_d_eq(mallctl("arena.0.purge", NULL, NULL, NULL, 0), 0,
+	    "Unexpected mallctl error");
+}
+
+/*
+ * GCC "-Walloc-size-larger-than" warning detects when one of the memory
+ * allocation functions is called with a size larger than the maximum size that
+ * they support. Here we want to explicitly test that the allocation functions
+ * do indeed fail properly when this is the case, which triggers the warning.
+ * Therefore we disable the warning for these tests.
+ */
+JEMALLOC_DIAGNOSTIC_PUSH
+JEMALLOC_DIAGNOSTIC_IGNORE_ALLOC_SIZE_LARGER_THAN
+
+TEST_BEGIN(test_overflow) {
+	size_t largemax;
+
+	largemax = get_large_size(get_nlarge()-1);
+
+	expect_ptr_null(smallocx(largemax+1, 0).ptr,
+	    "Expected OOM for smallocx(size=%#zx, 0)", largemax+1);
+
+	expect_ptr_null(smallocx(ZU(PTRDIFF_MAX)+1, 0).ptr,
+	    "Expected OOM for smallocx(size=%#zx, 0)", ZU(PTRDIFF_MAX)+1);
+
+	expect_ptr_null(smallocx(SIZE_T_MAX, 0).ptr,
+	    "Expected OOM for smallocx(size=%#zx, 0)", SIZE_T_MAX);
+
+	expect_ptr_null(smallocx(1, MALLOCX_ALIGN(ZU(PTRDIFF_MAX)+1)).ptr,
+	    "Expected OOM for smallocx(size=1, MALLOCX_ALIGN(%#zx))",
+	    ZU(PTRDIFF_MAX)+1);
+}
+TEST_END
+
+static void *
+remote_alloc(void *arg) {
+	unsigned arena;
+	size_t sz = sizeof(unsigned);
+	expect_d_eq(mallctl("arenas.create", (void *)&arena, &sz, NULL, 0), 0,
+	    "Unexpected mallctl() failure");
+	size_t large_sz;
+	sz = sizeof(size_t);
+	expect_d_eq(mallctl("arenas.lextent.0.size", (void *)&large_sz, &sz,
+	    NULL, 0), 0, "Unexpected mallctl failure");
+
+	smallocx_return_t r
+	    = smallocx(large_sz, MALLOCX_ARENA(arena) | MALLOCX_TCACHE_NONE);
+	void *ptr = r.ptr;
+	expect_zu_eq(r.size,
+	    nallocx(large_sz, MALLOCX_ARENA(arena) | MALLOCX_TCACHE_NONE),
+	    "Expected smalloc(size,flags).size == nallocx(size,flags)");
+	void **ret = (void **)arg;
+	*ret = ptr;
+
+	return NULL;
+}
+
+TEST_BEGIN(test_remote_free) {
+	thd_t thd;
+	void *ret;
+	thd_create(&thd, remote_alloc, (void *)&ret);
+	thd_join(thd, NULL);
+	expect_ptr_not_null(ret, "Unexpected smallocx failure");
+
+	/* Avoid TCACHE_NONE to explicitly test tcache_flush(). */
+	dallocx(ret, 0);
+	mallctl("thread.tcache.flush", NULL, NULL, NULL, 0);
+}
+TEST_END
+
+TEST_BEGIN(test_oom) {
+	size_t largemax;
+	bool oom;
+	void *ptrs[3];
+	unsigned i;
+
+	/*
+	 * It should be impossible to allocate three objects that each consume
+	 * nearly half the virtual address space.
+	 */
+	largemax = get_large_size(get_nlarge()-1);
+	oom = false;
+	for (i = 0; i < sizeof(ptrs) / sizeof(void *); i++) {
+		ptrs[i] = smallocx(largemax, 0).ptr;
+		if (ptrs[i] == NULL) {
+			oom = true;
+		}
+	}
+	expect_true(oom,
+	    "Expected OOM during series of calls to smallocx(size=%zu, 0)",
+	    largemax);
+	for (i = 0; i < sizeof(ptrs) / sizeof(void *); i++) {
+		if (ptrs[i] != NULL) {
+			dallocx(ptrs[i], 0);
+		}
+	}
+	purge();
+
+#if LG_SIZEOF_PTR == 3
+	expect_ptr_null(smallocx(0x8000000000000000ULL,
+	    MALLOCX_ALIGN(0x8000000000000000ULL)).ptr,
+	    "Expected OOM for smallocx()");
+	expect_ptr_null(smallocx(0x8000000000000000ULL,
+	    MALLOCX_ALIGN(0x80000000)).ptr,
+	    "Expected OOM for smallocx()");
+#else
+	expect_ptr_null(smallocx(0x80000000UL, MALLOCX_ALIGN(0x80000000UL)).ptr,
+	    "Expected OOM for smallocx()");
+#endif
+}
+TEST_END
+
+/* Re-enable the "-Walloc-size-larger-than=" warning */
+JEMALLOC_DIAGNOSTIC_POP
+
+TEST_BEGIN(test_basic) {
+#define MAXSZ (((size_t)1) << 23)
+	size_t sz;
+
+	for (sz = 1; sz < MAXSZ; sz = nallocx(sz, 0) + 1) {
+		smallocx_return_t ret;
+		size_t nsz, rsz, smz;
+		void *p;
+		nsz = nallocx(sz, 0);
+		expect_zu_ne(nsz, 0, "Unexpected nallocx() error");
+		ret = smallocx(sz, 0);
+		p = ret.ptr;
+		smz = ret.size;
+		expect_ptr_not_null(p,
+		    "Unexpected smallocx(size=%zx, flags=0) error", sz);
+		rsz = sallocx(p, 0);
+		expect_zu_ge(rsz, sz, "Real size smaller than expected");
+		expect_zu_eq(nsz, rsz, "nallocx()/sallocx() size mismatch");
+		expect_zu_eq(nsz, smz, "nallocx()/smallocx() size mismatch");
+		dallocx(p, 0);
+
+		ret = smallocx(sz, 0);
+		p = ret.ptr;
+		smz = ret.size;
+		expect_ptr_not_null(p,
+		    "Unexpected smallocx(size=%zx, flags=0) error", sz);
+		dallocx(p, 0);
+
+		nsz = nallocx(sz, MALLOCX_ZERO);
+		expect_zu_ne(nsz, 0, "Unexpected nallocx() error");
+		expect_zu_ne(smz, 0, "Unexpected smallocx() error");
+		ret = smallocx(sz, MALLOCX_ZERO);
+		p = ret.ptr;
+		expect_ptr_not_null(p,
+		    "Unexpected smallocx(size=%zx, flags=MALLOCX_ZERO) error",
+		    nsz);
+		rsz = sallocx(p, 0);
+		expect_zu_eq(nsz, rsz, "nallocx()/sallocx() rsize mismatch");
+		expect_zu_eq(nsz, smz, "nallocx()/smallocx() size mismatch");
+		dallocx(p, 0);
+		purge();
+	}
+#undef MAXSZ
+}
+TEST_END
+
+TEST_BEGIN(test_alignment_and_size) {
+	const char *percpu_arena;
+	size_t sz = sizeof(percpu_arena);
+
+	if(mallctl("opt.percpu_arena", (void *)&percpu_arena, &sz, NULL, 0) ||
+	    strcmp(percpu_arena, "disabled") != 0) {
+		test_skip("test_alignment_and_size skipped: "
+		    "not working with percpu arena.");
+	};
+#define MAXALIGN (((size_t)1) << 23)
+#define NITER 4
+	size_t nsz, rsz, smz, alignment, total;
+	unsigned i;
+	void *ps[NITER];
+
+	for (i = 0; i < NITER; i++) {
+		ps[i] = NULL;
+	}
+
+	for (alignment = 8;
+	    alignment <= MAXALIGN;
+	    alignment <<= 1) {
+		total = 0;
+		for (sz = 1;
+		    sz < 3 * alignment && sz < (1U << 31);
+		    sz += (alignment >> (LG_SIZEOF_PTR-1)) - 1) {
+			for (i = 0; i < NITER; i++) {
+				nsz = nallocx(sz, MALLOCX_ALIGN(alignment) |
+				    MALLOCX_ZERO);
+				expect_zu_ne(nsz, 0,
+				    "nallocx() error for alignment=%zu, "
+				    "size=%zu (%#zx)", alignment, sz, sz);
+				smallocx_return_t ret
+				    = smallocx(sz, MALLOCX_ALIGN(alignment) | MALLOCX_ZERO);
+				ps[i] = ret.ptr;
+				expect_ptr_not_null(ps[i],
+				    "smallocx() error for alignment=%zu, "
+				    "size=%zu (%#zx)", alignment, sz, sz);
+				rsz = sallocx(ps[i], 0);
+				smz = ret.size;
+				expect_zu_ge(rsz, sz,
+				    "Real size smaller than expected for "
+				    "alignment=%zu, size=%zu", alignment, sz);
+				expect_zu_eq(nsz, rsz,
+				    "nallocx()/sallocx() size mismatch for "
+				    "alignment=%zu, size=%zu", alignment, sz);
+				expect_zu_eq(nsz, smz,
+				    "nallocx()/smallocx() size mismatch for "
+				    "alignment=%zu, size=%zu", alignment, sz);
+				expect_ptr_null(
+				    (void *)((uintptr_t)ps[i] & (alignment-1)),
+				    "%p inadequately aligned for"
+				    " alignment=%zu, size=%zu", ps[i],
+				    alignment, sz);
+				total += rsz;
+				if (total >= (MAXALIGN << 1)) {
+					break;
+				}
+			}
+			for (i = 0; i < NITER; i++) {
+				if (ps[i] != NULL) {
+					dallocx(ps[i], 0);
+					ps[i] = NULL;
+				}
+			}
+		}
+		purge();
+	}
+#undef MAXALIGN
+#undef NITER
+}
+TEST_END
+
+int
+main(void) {
+	return test(
+	    test_overflow,
+	    test_oom,
+	    test_remote_free,
+	    test_basic,
+	    test_alignment_and_size);
+}
diff --git a/deps/jemalloc/test/integration/smallocx.sh b/deps/jemalloc/test/integration/smallocx.sh
new file mode 100644
index 0000000..d07f10f
--- /dev/null
+++ b/deps/jemalloc/test/integration/smallocx.sh
@@ -0,0 +1,5 @@
+#!/bin/sh
+
+if [ "x${enable_fill}" = "x1" ] ; then
+    export MALLOC_CONF="junk:false"
+fi
diff --git a/deps/jemalloc/test/integration/thread_arena.c b/deps/jemalloc/test/integration/thread_arena.c
new file mode 100644
index 0000000..4a6abf6
--- /dev/null
+++ b/deps/jemalloc/test/integration/thread_arena.c
@@ -0,0 +1,86 @@
+#include "test/jemalloc_test.h"
+
+#define NTHREADS 10
+
+void *
+thd_start(void *arg) {
+	unsigned main_arena_ind = *(unsigned *)arg;
+	void *p;
+	unsigned arena_ind;
+	size_t size;
+	int err;
+
+	p = malloc(1);
+	expect_ptr_not_null(p, "Error in malloc()");
+	free(p);
+
+	size = sizeof(arena_ind);
+	if ((err = mallctl("thread.arena", (void *)&arena_ind, &size,
+	    (void *)&main_arena_ind, sizeof(main_arena_ind)))) {
+		char buf[BUFERROR_BUF];
+
+		buferror(err, buf, sizeof(buf));
+		test_fail("Error in mallctl(): %s", buf);
+	}
+
+	size = sizeof(arena_ind);
+	if ((err = mallctl("thread.arena", (void *)&arena_ind, &size, NULL,
+	    0))) {
+		char buf[BUFERROR_BUF];
+
+		buferror(err, buf, sizeof(buf));
+		test_fail("Error in mallctl(): %s", buf);
+	}
+	expect_u_eq(arena_ind, main_arena_ind,
+	    "Arena index should be same as for main thread");
+
+	return NULL;
+}
+
+static void
+mallctl_failure(int err) {
+	char buf[BUFERROR_BUF];
+
+	buferror(err, buf, sizeof(buf));
+	test_fail("Error in mallctl(): %s", buf);
+}
+
+TEST_BEGIN(test_thread_arena) {
+	void *p;
+	int err;
+	thd_t thds[NTHREADS];
+	unsigned i;
+
+	p = malloc(1);
+	expect_ptr_not_null(p, "Error in malloc()");
+
+	unsigned arena_ind, old_arena_ind;
+	size_t sz = sizeof(unsigned);
+	expect_d_eq(mallctl("arenas.create", (void *)&arena_ind, &sz, NULL, 0),
+	    0, "Arena creation failure");
+
+	size_t size = sizeof(arena_ind);
+	if ((err = mallctl("thread.arena", (void *)&old_arena_ind, &size,
+	    (void *)&arena_ind, sizeof(arena_ind))) != 0) {
+		mallctl_failure(err);
+	}
+
+	for (i = 0; i < NTHREADS; i++) {
+		thd_create(&thds[i], thd_start,
+		    (void *)&arena_ind);
+	}
+
+	for (i = 0; i < NTHREADS; i++) {
+		intptr_t join_ret;
+		thd_join(thds[i], (void *)&join_ret);
+		expect_zd_eq(join_ret, 0, "Unexpected thread join error");
+	}
+	free(p);
+}
+TEST_END
+
+int
+main(void) {
+	return test(
+	    test_thread_arena);
+}
diff --git a/deps/jemalloc/test/integration/thread_tcache_enabled.c b/deps/jemalloc/test/integration/thread_tcache_enabled.c
new file mode 100644
index 0000000..d44dbe9
--- /dev/null
+++ b/deps/jemalloc/test/integration/thread_tcache_enabled.c
@@ -0,0 +1,87 @@
+#include "test/jemalloc_test.h"
+
+void *
+thd_start(void *arg) {
+	bool e0, e1;
+	size_t sz = sizeof(bool);
+	expect_d_eq(mallctl("thread.tcache.enabled", (void *)&e0, &sz, NULL,
+	    0), 0, "Unexpected mallctl failure");
+
+	if (e0) {
+		e1 = false;
+		expect_d_eq(mallctl("thread.tcache.enabled", (void *)&e0, &sz,
+		    (void *)&e1, sz), 0, "Unexpected mallctl() error");
+		expect_true(e0, "tcache should be enabled");
+	}
+
+	e1 = true;
+	expect_d_eq(mallctl("thread.tcache.enabled", (void *)&e0, &sz,
+	    (void *)&e1, sz), 0, "Unexpected mallctl() error");
+	expect_false(e0, "tcache should be disabled");
+
+	e1 = true;
+	expect_d_eq(mallctl("thread.tcache.enabled", (void *)&e0, &sz,
+	    (void *)&e1, sz), 0, "Unexpected mallctl() error");
+	expect_true(e0, "tcache should be enabled");
+
+	e1 = false;
+	expect_d_eq(mallctl("thread.tcache.enabled", (void *)&e0, &sz,
+	    (void *)&e1, sz), 0, "Unexpected mallctl() error");
+	expect_true(e0, "tcache should be enabled");
+
+	e1 = false;
+	expect_d_eq(mallctl("thread.tcache.enabled", (void *)&e0, &sz,
+	    (void *)&e1, sz), 0, "Unexpected mallctl() error");
+	expect_false(e0, "tcache should be disabled");
+
+	free(malloc(1));
+	e1 = true;
+	expect_d_eq(mallctl("thread.tcache.enabled", (void *)&e0, &sz,
+	    (void *)&e1, sz), 0, "Unexpected mallctl() error");
+	expect_false(e0, "tcache should be disabled");
+
+	free(malloc(1));
+	e1 = true;
+	expect_d_eq(mallctl("thread.tcache.enabled", (void *)&e0, &sz,
+	    (void *)&e1, sz), 0, "Unexpected mallctl() error");
+	expect_true(e0, "tcache should be enabled");
+
+	free(malloc(1));
+	e1 = false;
+	expect_d_eq(mallctl("thread.tcache.enabled", (void *)&e0, &sz,
+	    (void *)&e1, sz), 0, "Unexpected mallctl() error");
+	expect_true(e0, "tcache should be enabled");
+
+	free(malloc(1));
+	e1 = false;
+	expect_d_eq(mallctl("thread.tcache.enabled", (void *)&e0, &sz,
+	    (void *)&e1, sz), 0, "Unexpected mallctl() error");
+	expect_false(e0, "tcache should be disabled");
+
+	free(malloc(1));
+	return NULL;
+}
+
+TEST_BEGIN(test_main_thread) {
+	thd_start(NULL);
+}
+TEST_END
+
+TEST_BEGIN(test_subthread) {
+	thd_t thd;
+
+	thd_create(&thd, thd_start, NULL);
+	thd_join(thd, NULL);
+}
+TEST_END
+
+int
+main(void) {
+	/* Run tests multiple times to check for bad interactions. */
+	return test(
+	    test_main_thread,
+	    test_subthread,
+	    test_main_thread,
+	    test_subthread,
+	    test_main_thread);
+}
diff --git a/deps/jemalloc/test/integration/xallocx.c b/deps/jemalloc/test/integration/xallocx.c
new file mode 100644
index 0000000..1370854
--- /dev/null
+++ b/deps/jemalloc/test/integration/xallocx.c
@@ -0,0 +1,384 @@
+#include "test/jemalloc_test.h"
+
+/*
+ * Use a separate arena for xallocx() extension/contraction tests so that
+ * internal allocation e.g. by heap profiling can't interpose allocations where
+ * xallocx() would ordinarily be able to extend.
+ */
+static unsigned
+arena_ind(void) {
+	static unsigned ind = 0;
+
+	if (ind == 0) {
+		size_t sz = sizeof(ind);
+		expect_d_eq(mallctl("arenas.create", (void *)&ind, &sz, NULL,
+		    0), 0, "Unexpected mallctl failure creating arena");
+	}
+
+	return ind;
+}
+
+TEST_BEGIN(test_same_size) {
+	void *p;
+	size_t sz, tsz;
+
+	p = mallocx(42, 0);
+	expect_ptr_not_null(p, "Unexpected mallocx() error");
+	sz = sallocx(p, 0);
+
+	tsz = xallocx(p, sz, 0, 0);
+	expect_zu_eq(tsz, sz, "Unexpected size change: %zu --> %zu", sz, tsz);
+
+	dallocx(p, 0);
+}
+TEST_END
+
+TEST_BEGIN(test_extra_no_move) {
+	void *p;
+	size_t sz, tsz;
+
+	p = mallocx(42, 0);
+	expect_ptr_not_null(p, "Unexpected mallocx() error");
+	sz = sallocx(p, 0);
+
+	tsz = xallocx(p, sz, sz-42, 0);
+	expect_zu_eq(tsz, sz, "Unexpected size change: %zu --> %zu", sz, tsz);
+
+	dallocx(p, 0);
+}
+TEST_END
+
+TEST_BEGIN(test_no_move_fail) {
+	void *p;
+	size_t sz, tsz;
+
+	p = mallocx(42, 0);
+	expect_ptr_not_null(p, "Unexpected mallocx() error");
+	sz = sallocx(p, 0);
+
+	tsz = xallocx(p, sz + 5, 0, 0);
+	expect_zu_eq(tsz, sz, "Unexpected size change: %zu --> %zu", sz, tsz);
+
+	dallocx(p, 0);
+}
+TEST_END
+
+static unsigned
+get_nsizes_impl(const char *cmd) {
+	unsigned ret;
+	size_t z;
+
+	z = sizeof(unsigned);
+	expect_d_eq(mallctl(cmd, (void *)&ret, &z, NULL, 0), 0,
+	    "Unexpected mallctl(\"%s\", ...) failure", cmd);
+
+	return ret;
+}
+
+static unsigned
+get_nsmall(void) {
+	return get_nsizes_impl("arenas.nbins");
+}
+
+static unsigned
+get_nlarge(void) {
+	return get_nsizes_impl("arenas.nlextents");
+}
+
+static size_t
+get_size_impl(const char *cmd, size_t ind) {
+	size_t ret;
+	size_t z;
+	size_t mib[4];
+	size_t miblen = 4;
+
+	z = sizeof(size_t);
+	expect_d_eq(mallctlnametomib(cmd, mib, &miblen),
+	    0, "Unexpected mallctlnametomib(\"%s\", ...) failure", cmd);
+	mib[2] = ind;
+	z = sizeof(size_t);
+	expect_d_eq(mallctlbymib(mib, miblen, (void *)&ret, &z, NULL, 0),
+	    0, "Unexpected mallctlbymib([\"%s\", %zu], ...) failure", cmd, ind);
+
+	return ret;
+}
+
+static size_t
+get_small_size(size_t ind) {
+	return get_size_impl("arenas.bin.0.size", ind);
+}
+
+static size_t
+get_large_size(size_t ind) {
+	return get_size_impl("arenas.lextent.0.size", ind);
+}
+
+TEST_BEGIN(test_size) {
+	size_t small0, largemax;
+	void *p;
+
+	/* Get size classes. */
+	small0 = get_small_size(0);
+	largemax = get_large_size(get_nlarge()-1);
+
+	p = mallocx(small0, 0);
+	expect_ptr_not_null(p, "Unexpected mallocx() error");
+
+	/* Test smallest supported size. */
+	expect_zu_eq(xallocx(p, 1, 0, 0), small0,
+	    "Unexpected xallocx() behavior");
+
+	/* Test largest supported size. */
+	expect_zu_le(xallocx(p, largemax, 0, 0), largemax,
+	    "Unexpected xallocx() behavior");
+
+	/* Test size overflow. */
+	expect_zu_le(xallocx(p, largemax+1, 0, 0), largemax,
+	    "Unexpected xallocx() behavior");
+	expect_zu_le(xallocx(p, SIZE_T_MAX, 0, 0), largemax,
+	    "Unexpected xallocx() behavior");
+
+	dallocx(p, 0);
+}
+TEST_END
+
+TEST_BEGIN(test_size_extra_overflow) {
+	size_t small0, largemax;
+	void *p;
+
+	/* Get size classes. */
+	small0 = get_small_size(0);
+	largemax = get_large_size(get_nlarge()-1);
+
+	p = mallocx(small0, 0);
+	expect_ptr_not_null(p, "Unexpected mallocx() error");
+
+	/* Test overflows that can be resolved by clamping extra. */
+	expect_zu_le(xallocx(p, largemax-1, 2, 0), largemax,
+	    "Unexpected xallocx() behavior");
+	expect_zu_le(xallocx(p, largemax, 1, 0), largemax,
+	    "Unexpected xallocx() behavior");
+
+	/* Test overflow such that largemax-size underflows. */
+	expect_zu_le(xallocx(p, largemax+1, 2, 0), largemax,
+	    "Unexpected xallocx() behavior");
+	expect_zu_le(xallocx(p, largemax+2, 3, 0), largemax,
+	    "Unexpected xallocx() behavior");
+	expect_zu_le(xallocx(p, SIZE_T_MAX-2, 2, 0), largemax,
+	    "Unexpected xallocx() behavior");
+	expect_zu_le(xallocx(p, SIZE_T_MAX-1, 1, 0), largemax,
+	    "Unexpected xallocx() behavior");
+
+	dallocx(p, 0);
+}
+TEST_END
+
+TEST_BEGIN(test_extra_small) {
+	size_t small0, small1, largemax;
+	void *p;
+
+	/* Get size classes. */
+	small0 = get_small_size(0);
+	small1 = get_small_size(1);
+	largemax = get_large_size(get_nlarge()-1);
+
+	p = mallocx(small0, 0);
+	expect_ptr_not_null(p, "Unexpected mallocx() error");
+
+	expect_zu_eq(xallocx(p, small1, 0, 0), small0,
+	    "Unexpected xallocx() behavior");
+
+	expect_zu_eq(xallocx(p, small1, 0, 0), small0,
+	    "Unexpected xallocx() behavior");
+
+	expect_zu_eq(xallocx(p, small0, small1 - small0, 0), small0,
+	    "Unexpected xallocx() behavior");
+
+	/* Test size+extra overflow. */
+	expect_zu_eq(xallocx(p, small0, largemax - small0 + 1, 0), small0,
+	    "Unexpected xallocx() behavior");
+	expect_zu_eq(xallocx(p, small0, SIZE_T_MAX - small0, 0), small0,
+	    "Unexpected xallocx() behavior");
+
+	dallocx(p, 0);
+}
+TEST_END
+
+TEST_BEGIN(test_extra_large) {
+	int flags = MALLOCX_ARENA(arena_ind());
+	size_t smallmax, large1, large2, large3, largemax;
+	void *p;
+
+	/* Get size classes. */
+	smallmax = get_small_size(get_nsmall()-1);
+	large1 = get_large_size(1);
+	large2 = get_large_size(2);
+	large3 = get_large_size(3);
+	largemax = get_large_size(get_nlarge()-1);
+
+	p = mallocx(large3, flags);
+	expect_ptr_not_null(p, "Unexpected mallocx() error");
+
+	expect_zu_eq(xallocx(p, large3, 0, flags), large3,
+	    "Unexpected xallocx() behavior");
+	/* Test size decrease with zero extra. */
+	expect_zu_ge(xallocx(p, large1, 0, flags), large1,
+	    "Unexpected xallocx() behavior");
+	expect_zu_ge(xallocx(p, smallmax, 0, flags), large1,
+	    "Unexpected xallocx() behavior");
+
+	if (xallocx(p, large3, 0, flags) != large3) {
+		p = rallocx(p, large3, flags);
+		expect_ptr_not_null(p, "Unexpected rallocx() failure");
+	}
+	/* Test size decrease with non-zero extra. */
+	expect_zu_eq(xallocx(p, large1, large3 - large1, flags), large3,
+	    "Unexpected xallocx() behavior");
+	expect_zu_eq(xallocx(p, large2, large3 - large2, flags), large3,
+	    "Unexpected xallocx() behavior");
+	expect_zu_ge(xallocx(p, large1, large2 - large1, flags), large2,
+	    "Unexpected xallocx() behavior");
+	expect_zu_ge(xallocx(p, smallmax, large1 - smallmax, flags), large1,
+	    "Unexpected xallocx() behavior");
+
+	expect_zu_ge(xallocx(p, large1, 0, flags), large1,
+	    "Unexpected xallocx() behavior");
+	/* Test size increase with zero extra. */
+	expect_zu_le(xallocx(p, large3, 0, flags), large3,
+	    "Unexpected xallocx() behavior");
+	expect_zu_le(xallocx(p, largemax+1, 0, flags), large3,
+	    "Unexpected xallocx() behavior");
+
+	expect_zu_ge(xallocx(p, large1, 0, flags), large1,
+	    "Unexpected xallocx() behavior");
+	/* Test size increase with non-zero extra. */
+	expect_zu_le(xallocx(p, large1, SIZE_T_MAX - large1, flags), largemax,
+	    "Unexpected xallocx() behavior");
+
+	expect_zu_ge(xallocx(p, large1, 0, flags), large1,
+	    "Unexpected xallocx() behavior");
+	/* Test size increase with non-zero extra. */
+	expect_zu_le(xallocx(p, large1, large3 - large1, flags), large3,
+	    "Unexpected xallocx() behavior");
+
+	if (xallocx(p, large3, 0, flags) != large3) {
+		p = rallocx(p, large3, flags);
+		expect_ptr_not_null(p, "Unexpected rallocx() failure");
+	}
+	/* Test size+extra overflow. */
+	expect_zu_le(xallocx(p, large3, largemax - large3 + 1, flags), largemax,
+	    "Unexpected xallocx() behavior");
+
+	dallocx(p, flags);
+}
+TEST_END
+
+static void
+print_filled_extents(const void *p, uint8_t c, size_t len) {
+	const uint8_t *pc = (const uint8_t *)p;
+	size_t i, range0;
+	uint8_t c0;
+
+	malloc_printf("  p=%p, c=%#x, len=%zu:", p, c, len);
+	range0 = 0;
+	c0 = pc[0];
+	for (i = 0; i < len; i++) {
+		if (pc[i] != c0) {
+			malloc_printf(" %#x[%zu..%zu)", c0, range0, i);
+			range0 = i;
+			c0 = pc[i];
+		}
+	}
+	malloc_printf(" %#x[%zu..%zu)\n", c0, range0, i);
+}
+
+static bool
+validate_fill(const void *p, uint8_t c, size_t offset, size_t len) {
+	const uint8_t *pc = (const uint8_t *)p;
+	bool err;
+	size_t i;
+
+	for (i = offset, err = false; i < offset+len; i++) {
+		if (pc[i] != c) {
+			err = true;
+		}
+	}
+
+	if (err) {
+		print_filled_extents(p, c, offset + len);
+	}
+
+	return err;
+}
+
+static void
+test_zero(size_t szmin, size_t szmax) {
+	int flags = MALLOCX_ARENA(arena_ind()) | MALLOCX_ZERO;
+	size_t sz, nsz;
+	void *p;
+#define FILL_BYTE 0x7aU
+
+	sz = szmax;
+	p = mallocx(sz, flags);
+	expect_ptr_not_null(p, "Unexpected mallocx() error");
+	expect_false(validate_fill(p, 0x00, 0, sz), "Memory not filled: sz=%zu",
+	    sz);
+
+	/*
+	 * Fill with non-zero so that non-debug builds are more likely to detect
+	 * errors.
+	 */
+	memset(p, FILL_BYTE, sz);
+	expect_false(validate_fill(p, FILL_BYTE, 0, sz),
+	    "Memory not filled: sz=%zu", sz);
+
+	/* Shrink in place so that we can expect growing in place to succeed. */
+	sz = szmin;
+	if (xallocx(p, sz, 0, flags) != sz) {
+		p = rallocx(p, sz, flags);
+		expect_ptr_not_null(p, "Unexpected rallocx() failure");
+	}
+	expect_false(validate_fill(p, FILL_BYTE, 0, sz),
+	    "Memory not filled: sz=%zu", sz);
+
+	for (sz = szmin; sz < szmax; sz = nsz) {
+		nsz = nallocx(sz+1, flags);
+		if (xallocx(p, sz+1, 0, flags) != nsz) {
+			p = rallocx(p, sz+1, flags);
+			expect_ptr_not_null(p, "Unexpected rallocx() failure");
+		}
+		expect_false(validate_fill(p, FILL_BYTE, 0, sz),
+		    "Memory not filled: sz=%zu", sz);
+		expect_false(validate_fill(p, 0x00, sz, nsz-sz),
+		    "Memory not filled: sz=%zu, nsz-sz=%zu", sz, nsz-sz);
+		memset((void *)((uintptr_t)p + sz), FILL_BYTE, nsz-sz);
+		expect_false(validate_fill(p, FILL_BYTE, 0, nsz),
+		    "Memory not filled: nsz=%zu", nsz);
+	}
+
+	dallocx(p, flags);
+}
+
+TEST_BEGIN(test_zero_large) {
+	size_t large0, large1;
+
+	/* Get size classes. */
+	large0 = get_large_size(0);
+	large1 = get_large_size(1);
+
+	test_zero(large1, large0 * 2);
+}
+TEST_END
+
+int
+main(void) {
+	return test(
+	    test_same_size,
+	    test_extra_no_move,
+	    test_no_move_fail,
+	    test_size,
+	    test_size_extra_overflow,
+	    test_extra_small,
+	    test_extra_large,
+	    test_zero_large);
+}
diff --git a/deps/jemalloc/test/integration/xallocx.sh b/deps/jemalloc/test/integration/xallocx.sh
new file mode 100644
index 0000000..0cc2187
--- /dev/null
+++ b/deps/jemalloc/test/integration/xallocx.sh
@@ -0,0 +1,5 @@
+#!/bin/sh
+
+if [ "x${enable_fill}" = "x1" ] ; then
+  export MALLOC_CONF="junk:false"
+fi
diff --git a/deps/jemalloc/test/src/SFMT.c b/deps/jemalloc/test/src/SFMT.c
new file mode 100644
index 0000000..c05e218
--- /dev/null
+++ b/deps/jemalloc/test/src/SFMT.c
@@ -0,0 +1,719 @@
+/*
+ * This file derives from SFMT 1.3.3
+ * (http://www.math.sci.hiroshima-u.ac.jp/~m-mat/MT/SFMT/index.html), which was
+ * released under the terms of the following license:
+ *
+ *   Copyright (c) 2006,2007 Mutsuo Saito, Makoto Matsumoto and Hiroshima
+ *   University. All rights reserved.
+ *
+ *   Redistribution and use in source and binary forms, with or without
+ *   modification, are permitted provided that the following conditions are
+ *   met:
+ *
+ *       * Redistributions of source code must retain the above copyright
+ *         notice, this list of conditions and the following disclaimer.
+ *       * Redistributions in binary form must reproduce the above
+ *         copyright notice, this list of conditions and the following
+ *         disclaimer in the documentation and/or other materials provided
+ *         with the distribution.
+ *       * Neither the name of the Hiroshima University nor the names of
+ *         its contributors may be used to endorse or promote products
+ *         derived from this software without specific prior written
+ *         permission.
+ *
+ *   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ *   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ *   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ *   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ *   OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ *   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ *   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ *   DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ *   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ *   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ *   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+/**
+ * @file  SFMT.c
+ * @brief SIMD oriented Fast Mersenne Twister(SFMT)
+ *
+ * @author Mutsuo Saito (Hiroshima University)
+ * @author Makoto Matsumoto (Hiroshima University)
+ *
+ * Copyright (C) 2006,2007 Mutsuo Saito, Makoto Matsumoto and Hiroshima
+ * University. All rights reserved.
+ *
+ * The new BSD License is applied to this software, see LICENSE.txt
+ */
+#define SFMT_C_
+#include "test/jemalloc_test.h"
+#include "test/SFMT-params.h"
+
+#if defined(JEMALLOC_BIG_ENDIAN) && !defined(BIG_ENDIAN64)
+#define BIG_ENDIAN64 1
+#endif
+#if defined(__BIG_ENDIAN__) && !defined(__amd64) && !defined(BIG_ENDIAN64)
+#define BIG_ENDIAN64 1
+#endif
+#if defined(HAVE_ALTIVEC) && !defined(BIG_ENDIAN64)
+#define BIG_ENDIAN64 1
+#endif
+#if defined(ONLY64) && !defined(BIG_ENDIAN64)
+  #if defined(__GNUC__)
+    #error "-DONLY64 must be specified with -DBIG_ENDIAN64"
+  #endif
+#undef ONLY64
+#endif
+/*------------------------------------------------------
+  128-bit SIMD data type for Altivec, SSE2 or standard C
+  ------------------------------------------------------*/
+#if defined(HAVE_ALTIVEC)
+/** 128-bit data structure */
+union W128_T {
+    vector unsigned int s;
+    uint32_t u[4];
+};
+/** 128-bit data type */
+typedef union W128_T w128_t;
+
+#elif defined(HAVE_SSE2)
+/** 128-bit data structure */
+union W128_T {
+    __m128i si;
+    uint32_t u[4];
+};
+/** 128-bit data type */
+typedef union W128_T w128_t;
+
+#else
+
+/** 128-bit data structure */
+struct W128_T {
+    uint32_t u[4];
+};
+/** 128-bit data type */
+typedef struct W128_T w128_t;
+
+#endif
+
+struct sfmt_s {
+    /** the 128-bit internal state array */
+    w128_t sfmt[N];
+    /** index counter to the 32-bit internal state array */
+    int idx;
+    /** a flag: it is 0 if and only if the internal state is not yet
+     * initialized. */
+    int initialized;
+};
+
+/*--------------------------------------
+  FILE GLOBAL VARIABLES
+  internal state, index counter and flag
+  --------------------------------------*/
+
+/** a parity check vector which certificate the period of 2^{MEXP} */
+static uint32_t parity[4] = {PARITY1, PARITY2, PARITY3, PARITY4};
+
+/*----------------
+  STATIC FUNCTIONS
+  ----------------*/
+static inline int idxof(int i);
+#if (!defined(HAVE_ALTIVEC)) && (!defined(HAVE_SSE2))
+static inline void rshift128(w128_t *out,  w128_t const *in, int shift);
+static inline void lshift128(w128_t *out,  w128_t const *in, int shift);
+#endif
+static inline void gen_rand_all(sfmt_t *ctx);
+static inline void gen_rand_array(sfmt_t *ctx, w128_t *array, int size);
+static inline uint32_t func1(uint32_t x);
+static inline uint32_t func2(uint32_t x);
+static void period_certification(sfmt_t *ctx);
+#if defined(BIG_ENDIAN64) && !defined(ONLY64)
+static inline void swap(w128_t *array, int size);
+#endif
+
+#if defined(HAVE_ALTIVEC)
+  #include "test/SFMT-alti.h"
+#elif defined(HAVE_SSE2)
+  #include "test/SFMT-sse2.h"
+#endif
+
+/**
+ * This function simulate a 64-bit index of LITTLE ENDIAN
+ * in BIG ENDIAN machine.
+ */
+#ifdef ONLY64
+static inline int idxof(int i) {
+    return i ^ 1;
+}
+#else
+static inline int idxof(int i) {
+    return i;
+}
+#endif
+/**
+ * This function simulates SIMD 128-bit right shift by the standard C.
+ * The 128-bit integer given in in is shifted by (shift * 8) bits.
+ * This function simulates the LITTLE ENDIAN SIMD.
+ * @param out the output of this function
+ * @param in the 128-bit data to be shifted
+ * @param shift the shift value
+ */
+#if (!defined(HAVE_ALTIVEC)) && (!defined(HAVE_SSE2))
+#ifdef ONLY64
+static inline void rshift128(w128_t *out, w128_t const *in, int shift) {
+    uint64_t th, tl, oh, ol;
+
+    th = ((uint64_t)in->u[2] << 32) | ((uint64_t)in->u[3]);
+    tl = ((uint64_t)in->u[0] << 32) | ((uint64_t)in->u[1]);
+
+    oh = th >> (shift * 8);
+    ol = tl >> (shift * 8);
+    ol |= th << (64 - shift * 8);
+    out->u[0] = (uint32_t)(ol >> 32);
+    out->u[1] = (uint32_t)ol;
+    out->u[2] = (uint32_t)(oh >> 32);
+    out->u[3] = (uint32_t)oh;
+}
+#else
+static inline void rshift128(w128_t *out, w128_t const *in, int shift) {
+    uint64_t th, tl, oh, ol;
+
+    th = ((uint64_t)in->u[3] << 32) | ((uint64_t)in->u[2]);
+    tl = ((uint64_t)in->u[1] << 32) | ((uint64_t)in->u[0]);
+
+    oh = th >> (shift * 8);
+    ol = tl >> (shift * 8);
+    ol |= th << (64 - shift * 8);
+    out->u[1] = (uint32_t)(ol >> 32);
+    out->u[0] = (uint32_t)ol;
+    out->u[3] = (uint32_t)(oh >> 32);
+    out->u[2] = (uint32_t)oh;
+}
+#endif
+/**
+ * This function simulates SIMD 128-bit left shift by the standard C.
+ * The 128-bit integer given in in is shifted by (shift * 8) bits.
+ * This function simulates the LITTLE ENDIAN SIMD.
+ * @param out the output of this function
+ * @param in the 128-bit data to be shifted
+ * @param shift the shift value
+ */
+#ifdef ONLY64
+static inline void lshift128(w128_t *out, w128_t const *in, int shift) {
+    uint64_t th, tl, oh, ol;
+
+    th = ((uint64_t)in->u[2] << 32) | ((uint64_t)in->u[3]);
+    tl = ((uint64_t)in->u[0] << 32) | ((uint64_t)in->u[1]);
+
+    oh = th << (shift * 8);
+    ol = tl << (shift * 8);
+    oh |= tl >> (64 - shift * 8);
+    out->u[0] = (uint32_t)(ol >> 32);
+    out->u[1] = (uint32_t)ol;
+    out->u[2] = (uint32_t)(oh >> 32);
+    out->u[3] = (uint32_t)oh;
+}
+#else
+static inline void lshift128(w128_t *out, w128_t const *in, int shift) {
+    uint64_t th, tl, oh, ol;
+
+    th = ((uint64_t)in->u[3] << 32) | ((uint64_t)in->u[2]);
+    tl = ((uint64_t)in->u[1] << 32) | ((uint64_t)in->u[0]);
+
+    oh = th << (shift * 8);
+    ol = tl << (shift * 8);
+    oh |= tl >> (64 - shift * 8);
+    out->u[1] = (uint32_t)(ol >> 32);
+    out->u[0] = (uint32_t)ol;
+    out->u[3] = (uint32_t)(oh >> 32);
+    out->u[2] = (uint32_t)oh;
+}
+#endif
+#endif
+
+/**
+ * This function represents the recursion formula.
+ * @param r output
+ * @param a a 128-bit part of the internal state array
+ * @param b a 128-bit part of the internal state array
+ * @param c a 128-bit part of the internal state array
+ * @param d a 128-bit part of the internal state array
+ */
+#if (!defined(HAVE_ALTIVEC)) && (!defined(HAVE_SSE2))
+#ifdef ONLY64
+static inline void do_recursion(w128_t *r, w128_t *a, w128_t *b, w128_t *c,
+				w128_t *d) {
+    w128_t x;
+    w128_t y;
+
+    lshift128(&x, a, SL2);
+    rshift128(&y, c, SR2);
+    r->u[0] = a->u[0] ^ x.u[0] ^ ((b->u[0] >> SR1) & MSK2) ^ y.u[0]
+	^ (d->u[0] << SL1);
+    r->u[1] = a->u[1] ^ x.u[1] ^ ((b->u[1] >> SR1) & MSK1) ^ y.u[1]
+	^ (d->u[1] << SL1);
+    r->u[2] = a->u[2] ^ x.u[2] ^ ((b->u[2] >> SR1) & MSK4) ^ y.u[2]
+	^ (d->u[2] << SL1);
+    r->u[3] = a->u[3] ^ x.u[3] ^ ((b->u[3] >> SR1) & MSK3) ^ y.u[3]
+	^ (d->u[3] << SL1);
+}
+#else
+static inline void do_recursion(w128_t *r, w128_t *a, w128_t *b, w128_t *c,
+				w128_t *d) {
+    w128_t x;
+    w128_t y;
+
+    lshift128(&x, a, SL2);
+    rshift128(&y, c, SR2);
+    r->u[0] = a->u[0] ^ x.u[0] ^ ((b->u[0] >> SR1) & MSK1) ^ y.u[0]
+	^ (d->u[0] << SL1);
+    r->u[1] = a->u[1] ^ x.u[1] ^ ((b->u[1] >> SR1) & MSK2) ^ y.u[1]
+	^ (d->u[1] << SL1);
+    r->u[2] = a->u[2] ^ x.u[2] ^ ((b->u[2] >> SR1) & MSK3) ^ y.u[2]
+	^ (d->u[2] << SL1);
+    r->u[3] = a->u[3] ^ x.u[3] ^ ((b->u[3] >> SR1) & MSK4) ^ y.u[3]
+	^ (d->u[3] << SL1);
+}
+#endif
+#endif
+
+#if (!defined(HAVE_ALTIVEC)) && (!defined(HAVE_SSE2))
+/**
+ * This function fills the internal state array with pseudorandom
+ * integers.
+ */
+static inline void gen_rand_all(sfmt_t *ctx) {
+    int i;
+    w128_t *r1, *r2;
+
+    r1 = &ctx->sfmt[N - 2];
+    r2 = &ctx->sfmt[N - 1];
+    for (i = 0; i < N - POS1; i++) {
+	do_recursion(&ctx->sfmt[i], &ctx->sfmt[i], &ctx->sfmt[i + POS1], r1,
+	  r2);
+	r1 = r2;
+	r2 = &ctx->sfmt[i];
+    }
+    for (; i < N; i++) {
+	do_recursion(&ctx->sfmt[i], &ctx->sfmt[i], &ctx->sfmt[i + POS1 - N], r1,
+	  r2);
+	r1 = r2;
+	r2 = &ctx->sfmt[i];
+    }
+}
+
+/**
+ * This function fills the user-specified array with pseudorandom
+ * integers.
+ *
+ * @param array an 128-bit array to be filled by pseudorandom numbers.
+ * @param size number of 128-bit pseudorandom numbers to be generated.
+ */
+static inline void gen_rand_array(sfmt_t *ctx, w128_t *array, int size) {
+    int i, j;
+    w128_t *r1, *r2;
+
+    r1 = &ctx->sfmt[N - 2];
+    r2 = &ctx->sfmt[N - 1];
+    for (i = 0; i < N - POS1; i++) {
+	do_recursion(&array[i], &ctx->sfmt[i], &ctx->sfmt[i + POS1], r1, r2);
+	r1 = r2;
+	r2 = &array[i];
+    }
+    for (; i < N; i++) {
+	do_recursion(&array[i], &ctx->sfmt[i], &array[i + POS1 - N], r1, r2);
+	r1 = r2;
+	r2 = &array[i];
+    }
+    for (; i < size - N; i++) {
+	do_recursion(&array[i], &array[i - N], &array[i + POS1 - N], r1, r2);
+	r1 = r2;
+	r2 = &array[i];
+    }
+    for (j = 0; j < 2 * N - size; j++) {
+	ctx->sfmt[j] = array[j + size - N];
+    }
+    for (; i < size; i++, j++) {
+	do_recursion(&array[i], &array[i - N], &array[i + POS1 - N], r1, r2);
+	r1 = r2;
+	r2 = &array[i];
+	ctx->sfmt[j] = array[i];
+    }
+}
+#endif
+
+#if defined(BIG_ENDIAN64) && !defined(ONLY64) && !defined(HAVE_ALTIVEC)
+static inline void swap(w128_t *array, int size) {
+    int i;
+    uint32_t x, y;
+
+    for (i = 0; i < size; i++) {
+	x = array[i].u[0];
+	y = array[i].u[2];
+	array[i].u[0] = array[i].u[1];
+	array[i].u[2] = array[i].u[3];
+	array[i].u[1] = x;
+	array[i].u[3] = y;
+    }
+}
+#endif
+/**
+ * This function represents a function used in the initialization
+ * by init_by_array
+ * @param x 32-bit integer
+ * @return 32-bit integer
+ */
+static uint32_t func1(uint32_t x) {
+    return (x ^ (x >> 27)) * (uint32_t)1664525UL;
+}
+
+/**
+ * This function represents a function used in the initialization
+ * by init_by_array
+ * @param x 32-bit integer
+ * @return 32-bit integer
+ */
+static uint32_t func2(uint32_t x) {
+    return (x ^ (x >> 27)) * (uint32_t)1566083941UL;
+}
+
+/**
+ * This function certificate the period of 2^{MEXP}
+ */
+static void period_certification(sfmt_t *ctx) {
+    int inner = 0;
+    int i, j;
+    uint32_t work;
+    uint32_t *psfmt32 = &ctx->sfmt[0].u[0];
+
+    for (i = 0; i < 4; i++)
+	inner ^= psfmt32[idxof(i)] & parity[i];
+    for (i = 16; i > 0; i >>= 1)
+	inner ^= inner >> i;
+    inner &= 1;
+    /* check OK */
+    if (inner == 1) {
+	return;
+    }
+    /* check NG, and modification */
+    for (i = 0; i < 4; i++) {
+	work = 1;
+	for (j = 0; j < 32; j++) {
+	    if ((work & parity[i]) != 0) {
+		psfmt32[idxof(i)] ^= work;
+		return;
+	    }
+	    work = work << 1;
+	}
+    }
+}
+
+/*----------------
+  PUBLIC FUNCTIONS
+  ----------------*/
+/**
+ * This function returns the identification string.
+ * The string shows the word size, the Mersenne exponent,
+ * and all parameters of this generator.
+ */
+const char *get_idstring(void) {
+    return IDSTR;
+}
+
+/**
+ * This function returns the minimum size of array used for \b
+ * fill_array32() function.
+ * @return minimum size of array used for fill_array32() function.
+ */
+int get_min_array_size32(void) {
+    return N32;
+}
+
+/**
+ * This function returns the minimum size of array used for \b
+ * fill_array64() function.
+ * @return minimum size of array used for fill_array64() function.
+ */
+int get_min_array_size64(void) {
+    return N64;
+}
+
+#ifndef ONLY64
+/**
+ * This function generates and returns 32-bit pseudorandom number.
+ * init_gen_rand or init_by_array must be called before this function.
+ * @return 32-bit pseudorandom number
+ */
+uint32_t gen_rand32(sfmt_t *ctx) {
+    uint32_t r;
+    uint32_t *psfmt32 = &ctx->sfmt[0].u[0];
+
+    assert(ctx->initialized);
+    if (ctx->idx >= N32) {
+	gen_rand_all(ctx);
+	ctx->idx = 0;
+    }
+    r = psfmt32[ctx->idx++];
+    return r;
+}
+
+/* Generate a random integer in [0..limit). */
+uint32_t gen_rand32_range(sfmt_t *ctx, uint32_t limit) {
+    uint32_t ret, above;
+
+    above = 0xffffffffU - (0xffffffffU % limit);
+    while (1) {
+	ret = gen_rand32(ctx);
+	if (ret < above) {
+	    ret %= limit;
+	    break;
+	}
+    }
+    return ret;
+}
+#endif
+/**
+ * This function generates and returns 64-bit pseudorandom number.
+ * init_gen_rand or init_by_array must be called before this function.
+ * The function gen_rand64 should not be called after gen_rand32,
+ * unless an initialization is again executed.
+ * @return 64-bit pseudorandom number
+ */
+uint64_t gen_rand64(sfmt_t *ctx) {
+#if defined(BIG_ENDIAN64) && !defined(ONLY64)
+    uint32_t r1, r2;
+    uint32_t *psfmt32 = &ctx->sfmt[0].u[0];
+#else
+    uint64_t r;
+    uint64_t *psfmt64 = (uint64_t *)&ctx->sfmt[0].u[0];
+#endif
+
+    assert(ctx->initialized);
+    assert(ctx->idx % 2 == 0);
+
+    if (ctx->idx >= N32) {
+	gen_rand_all(ctx);
+	ctx->idx = 0;
+    }
+#if defined(BIG_ENDIAN64) && !defined(ONLY64)
+    r1 = psfmt32[ctx->idx];
+    r2 = psfmt32[ctx->idx + 1];
+    ctx->idx += 2;
+    return ((uint64_t)r2 << 32) | r1;
+#else
+    r = psfmt64[ctx->idx / 2];
+    ctx->idx += 2;
+    return r;
+#endif
+}
+
+/* Generate a random integer in [0..limit). */
+uint64_t gen_rand64_range(sfmt_t *ctx, uint64_t limit) {
+    uint64_t ret, above;
+
+    above = KQU(0xffffffffffffffff) - (KQU(0xffffffffffffffff) % limit);
+    while (1) {
+	ret = gen_rand64(ctx);
+	if (ret < above) {
+	    ret %= limit;
+	    break;
+	}
+    }
+    return ret;
+}
+
+#ifndef ONLY64
+/**
+ * This function generates pseudorandom 32-bit integers in the
+ * specified array[] by one call. The number of pseudorandom integers
+ * is specified by the argument size, which must be at least 624 and a
+ * multiple of four.  The generation by this function is much faster
+ * than the following gen_rand function.
+ *
+ * For initialization, init_gen_rand or init_by_array must be called
+ * before the first call of this function. This function can not be
+ * used after calling gen_rand function, without initialization.
+ *
+ * @param array an array where pseudorandom 32-bit integers are filled
+ * by this function.  The pointer to the array must be \b "aligned"
+ * (namely, must be a multiple of 16) in the SIMD version, since it
+ * refers to the address of a 128-bit integer.  In the standard C
+ * version, the pointer is arbitrary.
+ *
+ * @param size the number of 32-bit pseudorandom integers to be
+ * generated.  size must be a multiple of 4, and greater than or equal
+ * to (MEXP / 128 + 1) * 4.
+ *
+ * @note \b memalign or \b posix_memalign is available to get aligned
+ * memory. Mac OSX doesn't have these functions, but \b malloc of OSX
+ * returns the pointer to the aligned memory block.
+ */
+void fill_array32(sfmt_t *ctx, uint32_t *array, int size) {
+    assert(ctx->initialized);
+    assert(ctx->idx == N32);
+    assert(size % 4 == 0);
+    assert(size >= N32);
+
+    gen_rand_array(ctx, (w128_t *)array, size / 4);
+    ctx->idx = N32;
+}
+#endif
+
+/**
+ * This function generates pseudorandom 64-bit integers in the
+ * specified array[] by one call. The number of pseudorandom integers
+ * is specified by the argument size, which must be at least 312 and a
+ * multiple of two.  The generation by this function is much faster
+ * than the following gen_rand function.
+ *
+ * For initialization, init_gen_rand or init_by_array must be called
+ * before the first call of this function. This function can not be
+ * used after calling gen_rand function, without initialization.
+ *
+ * @param array an array where pseudorandom 64-bit integers are filled
+ * by this function.  The pointer to the array must be "aligned"
+ * (namely, must be a multiple of 16) in the SIMD version, since it
+ * refers to the address of a 128-bit integer.  In the standard C
+ * version, the pointer is arbitrary.
+ *
+ * @param size the number of 64-bit pseudorandom integers to be
+ * generated.  size must be a multiple of 2, and greater than or equal
+ * to (MEXP / 128 + 1) * 2
+ *
+ * @note \b memalign or \b posix_memalign is available to get aligned
+ * memory. Mac OSX doesn't have these functions, but \b malloc of OSX
+ * returns the pointer to the aligned memory block.
+ */
+void fill_array64(sfmt_t *ctx, uint64_t *array, int size) {
+    assert(ctx->initialized);
+    assert(ctx->idx == N32);
+    assert(size % 2 == 0);
+    assert(size >= N64);
+
+    gen_rand_array(ctx, (w128_t *)array, size / 2);
+    ctx->idx = N32;
+
+#if defined(BIG_ENDIAN64) && !defined(ONLY64)
+    swap((w128_t *)array, size /2);
+#endif
+}
+
+/**
+ * This function initializes the internal state array with a 32-bit
+ * integer seed.
+ *
+ * @param seed a 32-bit integer used as the seed.
+ */
+sfmt_t *init_gen_rand(uint32_t seed) {
+    void *p;
+    sfmt_t *ctx;
+    int i;
+    uint32_t *psfmt32;
+
+    if (posix_memalign(&p, sizeof(w128_t), sizeof(sfmt_t)) != 0) {
+	return NULL;
+    }
+    ctx = (sfmt_t *)p;
+    psfmt32 = &ctx->sfmt[0].u[0];
+
+    psfmt32[idxof(0)] = seed;
+    for (i = 1; i < N32; i++) {
+	psfmt32[idxof(i)] = 1812433253UL * (psfmt32[idxof(i - 1)]
+					    ^ (psfmt32[idxof(i - 1)] >> 30))
+	    + i;
+    }
+    ctx->idx = N32;
+    period_certification(ctx);
+    ctx->initialized = 1;
+
+    return ctx;
+}
+
+/**
+ * This function initializes the internal state array,
+ * with an array of 32-bit integers used as the seeds
+ * @param init_key the array of 32-bit integers, used as a seed.
+ * @param key_length the length of init_key.
+ */
+sfmt_t *init_by_array(uint32_t *init_key, int key_length) {
+    void *p;
+    sfmt_t *ctx;
+    int i, j, count;
+    uint32_t r;
+    int lag;
+    int mid;
+    int size = N * 4;
+    uint32_t *psfmt32;
+
+    if (posix_memalign(&p, sizeof(w128_t), sizeof(sfmt_t)) != 0) {
+	return NULL;
+    }
+    ctx = (sfmt_t *)p;
+    psfmt32 = &ctx->sfmt[0].u[0];
+
+    if (size >= 623) {
+	lag = 11;
+    } else if (size >= 68) {
+	lag = 7;
+    } else if (size >= 39) {
+	lag = 5;
+    } else {
+	lag = 3;
+    }
+    mid = (size - lag) / 2;
+
+    memset(ctx->sfmt, 0x8b, sizeof(ctx->sfmt));
+    if (key_length + 1 > N32) {
+	count = key_length + 1;
+    } else {
+	count = N32;
+    }
+    r = func1(psfmt32[idxof(0)] ^ psfmt32[idxof(mid)]
+	      ^ psfmt32[idxof(N32 - 1)]);
+    psfmt32[idxof(mid)] += r;
+    r += key_length;
+    psfmt32[idxof(mid + lag)] += r;
+    psfmt32[idxof(0)] = r;
+
+    count--;
+    for (i = 1, j = 0; (j < count) && (j < key_length); j++) {
+	r = func1(psfmt32[idxof(i)] ^ psfmt32[idxof((i + mid) % N32)]
+		  ^ psfmt32[idxof((i + N32 - 1) % N32)]);
+	psfmt32[idxof((i + mid) % N32)] += r;
+	r += init_key[j] + i;
+	psfmt32[idxof((i + mid + lag) % N32)] += r;
+	psfmt32[idxof(i)] = r;
+	i = (i + 1) % N32;
+    }
+    for (; j < count; j++) {
+	r = func1(psfmt32[idxof(i)] ^ psfmt32[idxof((i + mid) % N32)]
+		  ^ psfmt32[idxof((i + N32 - 1) % N32)]);
+	psfmt32[idxof((i + mid) % N32)] += r;
+	r += i;
+	psfmt32[idxof((i + mid + lag) % N32)] += r;
+	psfmt32[idxof(i)] = r;
+	i = (i + 1) % N32;
+    }
+    for (j = 0; j < N32; j++) {
+	r = func2(psfmt32[idxof(i)] + psfmt32[idxof((i + mid) % N32)]
+		  + psfmt32[idxof((i + N32 - 1) % N32)]);
+	psfmt32[idxof((i + mid) % N32)] ^= r;
+	r -= i;
+	psfmt32[idxof((i + mid + lag) % N32)] ^= r;
+	psfmt32[idxof(i)] = r;
+	i = (i + 1) % N32;
+    }
+
+    ctx->idx = N32;
+    period_certification(ctx);
+    ctx->initialized = 1;
+
+    return ctx;
+}
+
+void fini_gen_rand(sfmt_t *ctx) {
+    assert(ctx != NULL);
+
+    ctx->initialized = 0;
+    free(ctx);
+}
diff --git a/deps/jemalloc/test/src/btalloc.c b/deps/jemalloc/test/src/btalloc.c
new file mode 100644
index 0000000..d570952
--- /dev/null
+++ b/deps/jemalloc/test/src/btalloc.c
@@ -0,0 +1,6 @@
+#include "test/jemalloc_test.h"
+
+void *
+btalloc(size_t size, unsigned bits) {
+	return btalloc_0(size, bits);
+}
diff --git a/deps/jemalloc/test/src/btalloc_0.c b/deps/jemalloc/test/src/btalloc_0.c
new file mode 100644
index 0000000..77d8904
--- /dev/null
+++ b/deps/jemalloc/test/src/btalloc_0.c
@@ -0,0 +1,3 @@
+#include "test/jemalloc_test.h"
+
+btalloc_n_gen(0)
diff --git a/deps/jemalloc/test/src/btalloc_1.c b/deps/jemalloc/test/src/btalloc_1.c
new file mode 100644
index 0000000..4c126c3
--- /dev/null
+++ b/deps/jemalloc/test/src/btalloc_1.c
@@ -0,0 +1,3 @@
+#include "test/jemalloc_test.h"
+
+btalloc_n_gen(1)
diff --git a/deps/jemalloc/test/src/math.c b/deps/jemalloc/test/src/math.c
new file mode 100644
index 0000000..1758c67
--- /dev/null
+++ b/deps/jemalloc/test/src/math.c
@@ -0,0 +1,2 @@
+#define MATH_C_
+#include "test/jemalloc_test.h"
diff --git a/deps/jemalloc/test/src/mtx.c b/deps/jemalloc/test/src/mtx.c
new file mode 100644
index 0000000..d9ce375
--- /dev/null
+++ b/deps/jemalloc/test/src/mtx.c
@@ -0,0 +1,61 @@
+#include "test/jemalloc_test.h"
+
+#ifndef _CRT_SPINCOUNT
+#define _CRT_SPINCOUNT 4000
+#endif
+
+bool
+mtx_init(mtx_t *mtx) {
+#ifdef _WIN32
+	if (!InitializeCriticalSectionAndSpinCount(&mtx->lock,
+	    _CRT_SPINCOUNT)) {
+		return true;
+	}
+#elif (defined(JEMALLOC_OS_UNFAIR_LOCK))
+	mtx->lock = OS_UNFAIR_LOCK_INIT;
+#else
+	pthread_mutexattr_t attr;
+
+	if (pthread_mutexattr_init(&attr) != 0) {
+		return true;
+	}
+	pthread_mutexattr_settype(&attr, PTHREAD_MUTEX_DEFAULT);
+	if (pthread_mutex_init(&mtx->lock, &attr) != 0) {
+		pthread_mutexattr_destroy(&attr);
+		return true;
+	}
+	pthread_mutexattr_destroy(&attr);
+#endif
+	return false;
+}
+
+void
+mtx_fini(mtx_t *mtx) {
+#ifdef _WIN32
+#elif (defined(JEMALLOC_OS_UNFAIR_LOCK))
+#else
+	pthread_mutex_destroy(&mtx->lock);
+#endif
+}
+
+void
+mtx_lock(mtx_t *mtx) {
+#ifdef _WIN32
+	EnterCriticalSection(&mtx->lock);
+#elif (defined(JEMALLOC_OS_UNFAIR_LOCK))
+	os_unfair_lock_lock(&mtx->lock);
+#else
+	pthread_mutex_lock(&mtx->lock);
+#endif
+}
+
+void
+mtx_unlock(mtx_t *mtx) {
+#ifdef _WIN32
+	LeaveCriticalSection(&mtx->lock);
+#elif (defined(JEMALLOC_OS_UNFAIR_LOCK))
+	os_unfair_lock_unlock(&mtx->lock);
+#else
+	pthread_mutex_unlock(&mtx->lock);
+#endif
+}
diff --git a/deps/jemalloc/test/src/sleep.c b/deps/jemalloc/test/src/sleep.c
new file mode 100644
index 0000000..2234b4b
--- /dev/null
+++ b/deps/jemalloc/test/src/sleep.c
@@ -0,0 +1,27 @@
+#include "test/jemalloc_test.h"
+
+/*
+ * Sleep for approximately ns nanoseconds.  No lower *nor* upper bound on sleep
+ * time is guaranteed.
+ */
+void
+sleep_ns(unsigned ns) {
+	assert(ns <= 1000*1000*1000);
+
+#ifdef _WIN32
+	Sleep(ns / 1000 / 1000);
+#else
+	{
+		struct timespec timeout;
+
+		if (ns < 1000*1000*1000) {
+			timeout.tv_sec = 0;
+			timeout.tv_nsec = ns;
+		} else {
+			timeout.tv_sec = 1;
+			timeout.tv_nsec = 0;
+		}
+		nanosleep(&timeout, NULL);
+	}
+#endif
+}
diff --git a/deps/jemalloc/test/src/test.c b/deps/jemalloc/test/src/test.c
new file mode 100644
index 0000000..4cd803e
--- /dev/null
+++ b/deps/jemalloc/test/src/test.c
@@ -0,0 +1,234 @@
+#include "test/jemalloc_test.h"
+
+/* Test status state. */
+
+static unsigned		test_count = 0;
+static test_status_t	test_counts[test_status_count] = {0, 0, 0};
+static test_status_t	test_status = test_status_pass;
+static const char *	test_name = "";
+
+/* Reentrancy testing helpers. */
+
+#define NUM_REENTRANT_ALLOCS 20
+typedef enum {
+	non_reentrant = 0,
+	libc_reentrant = 1,
+	arena_new_reentrant = 2
+} reentrancy_t;
+static reentrancy_t reentrancy;
+
+static bool libc_hook_ran = false;
+static bool arena_new_hook_ran = false;
+
+static const char *
+reentrancy_t_str(reentrancy_t r) {
+	switch (r) {
+	case non_reentrant:
+		return "non-reentrant";
+	case libc_reentrant:
+		return "libc-reentrant";
+	case arena_new_reentrant:
+		return "arena_new-reentrant";
+	default:
+		unreachable();
+	}
+}
+
+static void
+do_hook(bool *hook_ran, void (**hook)()) {
+	*hook_ran = true;
+	*hook = NULL;
+
+	size_t alloc_size = 1;
+	for (int i = 0; i < NUM_REENTRANT_ALLOCS; i++) {
+		free(malloc(alloc_size));
+		alloc_size *= 2;
+	}
+}
+
+static void
+libc_reentrancy_hook() {
+	do_hook(&libc_hook_ran, &test_hooks_libc_hook);
+}
+
+static void
+arena_new_reentrancy_hook() {
+	do_hook(&arena_new_hook_ran, &test_hooks_arena_new_hook);
+}
+
+/* Actual test infrastructure. */
+bool
+test_is_reentrant() {
+	return reentrancy != non_reentrant;
+}
+
+JEMALLOC_FORMAT_PRINTF(1, 2)
+void
+test_skip(const char *format, ...) {
+	va_list ap;
+
+	va_start(ap, format);
+	malloc_vcprintf(NULL, NULL, format, ap);
+	va_end(ap);
+	malloc_printf("\n");
+	test_status = test_status_skip;
+}
+
+JEMALLOC_FORMAT_PRINTF(1, 2)
+void
+test_fail(const char *format, ...) {
+	va_list ap;
+
+	va_start(ap, format);
+	malloc_vcprintf(NULL, NULL, format, ap);
+	va_end(ap);
+	malloc_printf("\n");
+	test_status = test_status_fail;
+}
+
+static const char *
+test_status_string(test_status_t current_status) {
+	switch (current_status) {
+	case test_status_pass: return "pass";
+	case test_status_skip: return "skip";
+	case test_status_fail: return "fail";
+	default: not_reached();
+	}
+}
+
+void
+p_test_init(const char *name) {
+	test_count++;
+	test_status = test_status_pass;
+	test_name = name;
+}
+
+void
+p_test_fini(void) {
+	test_counts[test_status]++;
+	malloc_printf("%s (%s): %s\n", test_name, reentrancy_t_str(reentrancy),
+	    test_status_string(test_status));
+}
+
+static void
+check_global_slow(test_status_t *status) {
+#ifdef JEMALLOC_UNIT_TEST
+	/*
+	 * This check needs to peek into tsd internals, which is why it's only
+	 * exposed in unit tests.
+	 */
+	if (tsd_global_slow()) {
+		malloc_printf("Testing increased global slow count\n");
+		*status = test_status_fail;
+	}
+#endif
+}
+
+static test_status_t
+p_test_impl(bool do_malloc_init, bool do_reentrant, test_t *t, va_list ap) {
+	test_status_t ret;
+
+	if (do_malloc_init) {
+		/*
+		 * Make sure initialization occurs prior to running tests.
+		 * Tests are special because they may use internal facilities
+		 * prior to triggering initialization as a side effect of
+		 * calling into the public API.
+		 */
+		if (nallocx(1, 0) == 0) {
+			malloc_printf("Initialization error");
+			return test_status_fail;
+		}
+	}
+
+	ret = test_status_pass;
+	for (; t != NULL; t = va_arg(ap, test_t *)) {
+		/* Non-reentrant run. */
+		reentrancy = non_reentrant;
+		test_hooks_arena_new_hook = test_hooks_libc_hook = NULL;
+		t();
+		if (test_status > ret) {
+			ret = test_status;
+		}
+		check_global_slow(&ret);
+		/* Reentrant run. */
+		if (do_reentrant) {
+			reentrancy = libc_reentrant;
+			test_hooks_arena_new_hook = NULL;
+			test_hooks_libc_hook = &libc_reentrancy_hook;
+			t();
+			if (test_status > ret) {
+				ret = test_status;
+			}
+			check_global_slow(&ret);
+
+			reentrancy = arena_new_reentrant;
+			test_hooks_libc_hook = NULL;
+			test_hooks_arena_new_hook = &arena_new_reentrancy_hook;
+			t();
+			if (test_status > ret) {
+				ret = test_status;
+			}
+			check_global_slow(&ret);
+		}
+	}
+
+	malloc_printf("--- %s: %u/%u, %s: %u/%u, %s: %u/%u ---\n",
+	    test_status_string(test_status_pass),
+	    test_counts[test_status_pass], test_count,
+	    test_status_string(test_status_skip),
+	    test_counts[test_status_skip], test_count,
+	    test_status_string(test_status_fail),
+	    test_counts[test_status_fail], test_count);
+
+	return ret;
+}
+
+test_status_t
+p_test(test_t *t, ...) {
+	test_status_t ret;
+	va_list ap;
+
+	ret = test_status_pass;
+	va_start(ap, t);
+	ret = p_test_impl(true, true, t, ap);
+	va_end(ap);
+
+	return ret;
+}
+
+test_status_t
+p_test_no_reentrancy(test_t *t, ...) {
+	test_status_t ret;
+	va_list ap;
+
+	ret = test_status_pass;
+	va_start(ap, t);
+	ret = p_test_impl(true, false, t, ap);
+	va_end(ap);
+
+	return ret;
+}
+
+test_status_t
+p_test_no_malloc_init(test_t *t, ...) {
+	test_status_t ret;
+	va_list ap;
+
+	ret = test_status_pass;
+	va_start(ap, t);
+	/*
+	 * We also omit reentrancy from bootstrapping tests, since we don't
+	 * (yet) care about general reentrancy during bootstrapping.
+	 */
+	ret = p_test_impl(false, false, t, ap);
+	va_end(ap);
+
+	return ret;
+}
+
+void
+p_test_fail(const char *prefix, const char *message) {
+	malloc_cprintf(NULL, NULL, "%s%s\n", prefix, message);
+	test_status = test_status_fail;
+}
diff --git a/deps/jemalloc/test/src/thd.c b/deps/jemalloc/test/src/thd.c
new file mode 100644
index 0000000..9a15eab
--- /dev/null
+++ b/deps/jemalloc/test/src/thd.c
@@ -0,0 +1,34 @@
+#include "test/jemalloc_test.h"
+
+#ifdef _WIN32
+void
+thd_create(thd_t *thd, void *(*proc)(void *), void *arg) {
+	LPTHREAD_START_ROUTINE routine = (LPTHREAD_START_ROUTINE)proc;
+	*thd = CreateThread(NULL, 0, routine, arg, 0, NULL);
+	if (*thd == NULL) {
+		test_fail("Error in CreateThread()\n");
+	}
+}
+
+void
+thd_join(thd_t thd, void **ret) {
+	if (WaitForSingleObject(thd, INFINITE) == WAIT_OBJECT_0 && ret) {
+		DWORD exit_code;
+		GetExitCodeThread(thd, (LPDWORD) &exit_code);
+		*ret = (void *)(uintptr_t)exit_code;
+	}
+}
+
+#else
+void
+thd_create(thd_t *thd, void *(*proc)(void *), void *arg) {
+	if (pthread_create(thd, NULL, proc, arg) != 0) {
+		test_fail("Error in pthread_create()\n");
+	}
+}
+
+void
+thd_join(thd_t thd, void **ret) {
+	pthread_join(thd, ret);
+}
+#endif
diff --git a/deps/jemalloc/test/src/timer.c b/deps/jemalloc/test/src/timer.c
new file mode 100644
index 0000000..6e8b8ed
--- /dev/null
+++ b/deps/jemalloc/test/src/timer.c
@@ -0,0 +1,55 @@
+#include "test/jemalloc_test.h"
+
+void
+timer_start(timedelta_t *timer) {
+	nstime_init_update(&timer->t0);
+}
+
+void
+timer_stop(timedelta_t *timer) {
+	nstime_copy(&timer->t1, &timer->t0);
+	nstime_update(&timer->t1);
+}
+
+uint64_t
+timer_usec(const timedelta_t *timer) {
+	nstime_t delta;
+
+	nstime_copy(&delta, &timer->t1);
+	nstime_subtract(&delta, &timer->t0);
+	return nstime_ns(&delta) / 1000;
+}
+
+void
+timer_ratio(timedelta_t *a, timedelta_t *b, char *buf, size_t buflen) {
+	uint64_t t0 = timer_usec(a);
+	uint64_t t1 = timer_usec(b);
+	uint64_t mult;
+	size_t i = 0;
+	size_t j, n;
+
+	/* Whole. */
+	n = malloc_snprintf(&buf[i], buflen-i, "%"FMTu64, t0 / t1);
+	i += n;
+	if (i >= buflen) {
+		return;
+	}
+	mult = 1;
+	for (j = 0; j < n; j++) {
+		mult *= 10;
+	}
+
+	/* Decimal. */
+	n = malloc_snprintf(&buf[i], buflen-i, ".");
+	i += n;
+
+	/* Fraction. */
+	while (i < buflen-1) {
+		uint64_t round = (i+1 == buflen-1 && ((t0 * mult * 10 / t1) % 10
+		    >= 5)) ? 1 : 0;
+		n = malloc_snprintf(&buf[i], buflen-i,
+		    "%"FMTu64, (t0 * mult / t1) % 10 + round);
+		i += n;
+		mult *= 10;
+	}
+}
diff --git a/deps/jemalloc/test/stress/batch_alloc.c b/deps/jemalloc/test/stress/batch_alloc.c
new file mode 100644
index 0000000..427e1cb
--- /dev/null
+++ b/deps/jemalloc/test/stress/batch_alloc.c
@@ -0,0 +1,198 @@
+#include "test/jemalloc_test.h"
+#include "test/bench.h"
+
+#define MIBLEN 8
+static size_t mib[MIBLEN];
+static size_t miblen = MIBLEN;
+
+#define TINY_BATCH 10
+#define TINY_BATCH_ITER (10 * 1000 * 1000)
+#define HUGE_BATCH (1000 * 1000)
+#define HUGE_BATCH_ITER 100
+#define LEN (100 * 1000 * 1000)
+static void *batch_ptrs[LEN];
+static size_t batch_ptrs_next = 0;
+static void *item_ptrs[LEN];
+static size_t item_ptrs_next = 0;
+
+#define SIZE 7
+
+typedef struct batch_alloc_packet_s batch_alloc_packet_t;
+struct batch_alloc_packet_s {
+	void **ptrs;
+	size_t num;
+	size_t size;
+	int flags;
+};
+
+static void
+batch_alloc_wrapper(size_t batch) {
+	batch_alloc_packet_t batch_alloc_packet =
+	    {batch_ptrs + batch_ptrs_next, batch, SIZE, 0};
+	size_t filled;
+	size_t len = sizeof(size_t);
+	assert_d_eq(mallctlbymib(mib, miblen, &filled, &len,
+	    &batch_alloc_packet, sizeof(batch_alloc_packet)), 0, "");
+	assert_zu_eq(filled, batch, "");
+}
+
+static void
+item_alloc_wrapper(size_t batch) {
+	for (size_t i = item_ptrs_next, end = i + batch; i < end; ++i) {
+		item_ptrs[i] = malloc(SIZE);
+	}
+}
+
+static void
+release_and_clear(void **ptrs, size_t len) {
+	for (size_t i = 0; i < len; ++i) {
+		void *p = ptrs[i];
+		assert_ptr_not_null(p, "allocation failed");
+		sdallocx(p, SIZE, 0);
+		ptrs[i] = NULL;
+	}
+}
+
+static void
+batch_alloc_without_free(size_t batch) {
+	batch_alloc_wrapper(batch);
+	batch_ptrs_next += batch;
+}
+
+static void
+item_alloc_without_free(size_t batch) {
+	item_alloc_wrapper(batch);
+	item_ptrs_next += batch;
+}
+
+static void
+batch_alloc_with_free(size_t batch) {
+	batch_alloc_wrapper(batch);
+	release_and_clear(batch_ptrs + batch_ptrs_next, batch);
+	batch_ptrs_next += batch;
+}
+
+static void
+item_alloc_with_free(size_t batch) {
+	item_alloc_wrapper(batch);
+	release_and_clear(item_ptrs + item_ptrs_next, batch);
+	item_ptrs_next += batch;
+}
+
+static void
+compare_without_free(size_t batch, size_t iter,
+    void (*batch_alloc_without_free_func)(void),
+    void (*item_alloc_without_free_func)(void)) {
+	assert(batch_ptrs_next == 0);
+	assert(item_ptrs_next == 0);
+	assert(batch * iter <= LEN);
+	for (size_t i = 0; i < iter; ++i) {
+		batch_alloc_without_free_func();
+		item_alloc_without_free_func();
+	}
+	release_and_clear(batch_ptrs, batch_ptrs_next);
+	batch_ptrs_next = 0;
+	release_and_clear(item_ptrs, item_ptrs_next);
+	item_ptrs_next = 0;
+	compare_funcs(0, iter,
+	    "batch allocation", batch_alloc_without_free_func,
+	    "item allocation", item_alloc_without_free_func);
+	release_and_clear(batch_ptrs, batch_ptrs_next);
+	batch_ptrs_next = 0;
+	release_and_clear(item_ptrs, item_ptrs_next);
+	item_ptrs_next = 0;
+}
+
+static void
+compare_with_free(size_t batch, size_t iter,
+    void (*batch_alloc_with_free_func)(void),
+    void (*item_alloc_with_free_func)(void)) {
+	assert(batch_ptrs_next == 0);
+	assert(item_ptrs_next == 0);
+	assert(batch * iter <= LEN);
+	for (size_t i = 0; i < iter; ++i) {
+		batch_alloc_with_free_func();
+		item_alloc_with_free_func();
+	}
+	batch_ptrs_next = 0;
+	item_ptrs_next = 0;
+	compare_funcs(0, iter,
+	    "batch allocation", batch_alloc_with_free_func,
+	    "item allocation", item_alloc_with_free_func);
+	batch_ptrs_next = 0;
+	item_ptrs_next = 0;
+}
+
+static void
+batch_alloc_without_free_tiny() {
+	batch_alloc_without_free(TINY_BATCH);
+}
+
+static void
+item_alloc_without_free_tiny() {
+	item_alloc_without_free(TINY_BATCH);
+}
+
+TEST_BEGIN(test_tiny_batch_without_free) {
+	compare_without_free(TINY_BATCH, TINY_BATCH_ITER,
+	    batch_alloc_without_free_tiny, item_alloc_without_free_tiny);
+}
+TEST_END
+
+static void
+batch_alloc_with_free_tiny() {
+	batch_alloc_with_free(TINY_BATCH);
+}
+
+static void
+item_alloc_with_free_tiny() {
+	item_alloc_with_free(TINY_BATCH);
+}
+
+TEST_BEGIN(test_tiny_batch_with_free) {
+	compare_with_free(TINY_BATCH, TINY_BATCH_ITER,
+	    batch_alloc_with_free_tiny, item_alloc_with_free_tiny);
+}
+TEST_END
+
+static void
+batch_alloc_without_free_huge() {
+	batch_alloc_without_free(HUGE_BATCH);
+}
+
+static void
+item_alloc_without_free_huge() {
+	item_alloc_without_free(HUGE_BATCH);
+}
+
+TEST_BEGIN(test_huge_batch_without_free) {
+	compare_without_free(HUGE_BATCH, HUGE_BATCH_ITER,
+	    batch_alloc_without_free_huge, item_alloc_without_free_huge);
+}
+TEST_END
+
+static void
+batch_alloc_with_free_huge() {
+	batch_alloc_with_free(HUGE_BATCH);
+}
+
+static void
+item_alloc_with_free_huge() {
+	item_alloc_with_free(HUGE_BATCH);
+}
+
+TEST_BEGIN(test_huge_batch_with_free) {
+	compare_with_free(HUGE_BATCH, HUGE_BATCH_ITER,
+	    batch_alloc_with_free_huge, item_alloc_with_free_huge);
+}
+TEST_END
+
+int main(void) {
+	assert_d_eq(mallctlnametomib("experimental.batch_alloc", mib, &miblen),
+	    0, "");
+	return test_no_reentrancy(
+	    test_tiny_batch_without_free,
+	    test_tiny_batch_with_free,
+	    test_huge_batch_without_free,
+	    test_huge_batch_with_free);
+}
diff --git a/deps/jemalloc/test/stress/fill_flush.c b/deps/jemalloc/test/stress/fill_flush.c
new file mode 100644
index 0000000..a2db044
--- /dev/null
+++ b/deps/jemalloc/test/stress/fill_flush.c
@@ -0,0 +1,76 @@
+#include "test/jemalloc_test.h"
+#include "test/bench.h"
+
+#define SMALL_ALLOC_SIZE 128
+#define LARGE_ALLOC_SIZE SC_LARGE_MINCLASS
+#define NALLOCS 1000
+
+/*
+ * We make this volatile so the 1-at-a-time variants can't leave the allocation
+ * in a register, just to try to get the cache behavior closer.
+ */
+void *volatile allocs[NALLOCS];
+
+static void
+array_alloc_dalloc_small(void) {
+	for (int i = 0; i < NALLOCS; i++) {
+		void *p = mallocx(SMALL_ALLOC_SIZE, 0);
+		assert_ptr_not_null(p, "mallocx shouldn't fail");
+		allocs[i] = p;
+	}
+	for (int i = 0; i < NALLOCS; i++) {
+		sdallocx(allocs[i], SMALL_ALLOC_SIZE, 0);
+	}
+}
+
+static void
+item_alloc_dalloc_small(void) {
+	for (int i = 0; i < NALLOCS; i++) {
+		void *p = mallocx(SMALL_ALLOC_SIZE, 0);
+		assert_ptr_not_null(p, "mallocx shouldn't fail");
+		allocs[i] = p;
+		sdallocx(allocs[i], SMALL_ALLOC_SIZE, 0);
+	}
+}
+
+TEST_BEGIN(test_array_vs_item_small) {
+	compare_funcs(1 * 1000, 10 * 1000,
+	    "array of small allocations", array_alloc_dalloc_small,
+	    "small item allocation", item_alloc_dalloc_small);
+}
+TEST_END
+
+static void
+array_alloc_dalloc_large(void) {
+	for (int i = 0; i < NALLOCS; i++) {
+		void *p = mallocx(LARGE_ALLOC_SIZE, 0);
+		assert_ptr_not_null(p, "mallocx shouldn't fail");
+		allocs[i] = p;
+	}
+	for (int i = 0; i < NALLOCS; i++) {
+		sdallocx(allocs[i], LARGE_ALLOC_SIZE, 0);
+	}
+}
+
+static void
+item_alloc_dalloc_large(void) {
+	for (int i = 0; i < NALLOCS; i++) {
+		void *p = mallocx(LARGE_ALLOC_SIZE, 0);
+		assert_ptr_not_null(p, "mallocx shouldn't fail");
+		allocs[i] = p;
+		sdallocx(allocs[i], LARGE_ALLOC_SIZE, 0);
+	}
+}
+
+TEST_BEGIN(test_array_vs_item_large) {
+	compare_funcs(100, 1000,
+	    "array of large allocations", array_alloc_dalloc_large,
+	    "large item allocation", item_alloc_dalloc_large);
+}
+TEST_END
+
+int main(void) {
+	return test_no_reentrancy(
+	    test_array_vs_item_small,
+	    test_array_vs_item_large);
+}
diff --git a/deps/jemalloc/test/stress/hookbench.c b/deps/jemalloc/test/stress/hookbench.c
new file mode 100644
index 0000000..97e90b0
--- /dev/null
+++ b/deps/jemalloc/test/stress/hookbench.c
@@ -0,0 +1,73 @@
+#include "test/jemalloc_test.h"
+
+static void
+noop_alloc_hook(void *extra, hook_alloc_t type, void *result,
+    uintptr_t result_raw, uintptr_t args_raw[3]) {
+}
+
+static void
+noop_dalloc_hook(void *extra, hook_dalloc_t type, void *address,
+    uintptr_t args_raw[3]) {
+}
+
+static void
+noop_expand_hook(void *extra, hook_expand_t type, void *address,
+    size_t old_usize, size_t new_usize, uintptr_t result_raw,
+    uintptr_t args_raw[4]) {
+}
+
+static void
+malloc_free_loop(int iters) {
+	for (int i = 0; i < iters; i++) {
+		void *p = mallocx(1, 0);
+		free(p);
+	}
+}
+
+static void
+test_hooked(int iters) {
+	hooks_t hooks = {&noop_alloc_hook, &noop_dalloc_hook, &noop_expand_hook,
+		NULL};
+
+	int err;
+	void *handles[HOOK_MAX];
+	size_t sz = sizeof(handles[0]);
+
+	for (int i = 0; i < HOOK_MAX; i++) {
+		err = mallctl("experimental.hooks.install", &handles[i],
+		    &sz, &hooks, sizeof(hooks));
+		assert(err == 0);
+
+		timedelta_t timer;
+		timer_start(&timer);
+		malloc_free_loop(iters);
+		timer_stop(&timer);
+		malloc_printf("With %d hook%s: %"FMTu64"us\n", i + 1,
+		    i + 1 == 1 ? "" : "s", timer_usec(&timer));
+	}
+	for (int i = 0; i < HOOK_MAX; i++) {
+		err = mallctl("experimental.hooks.remove", NULL, NULL,
+		    &handles[i], sizeof(handles[i]));
+		assert(err == 0);
+	}
+}
+
+static void
+test_unhooked(int iters) {
+	timedelta_t timer;
+	timer_start(&timer);
+	malloc_free_loop(iters);
+	timer_stop(&timer);
+
+	malloc_printf("Without hooks: %"FMTu64"us\n", timer_usec(&timer));
+}
+
+int
+main(void) {
+	/* Initialize */
+	free(mallocx(1, 0));
+	int iters = 10 * 1000 * 1000;
+	malloc_printf("Benchmarking hooks with %d iterations:\n", iters);
+	test_hooked(iters);
+	test_unhooked(iters);
+}
diff --git a/deps/jemalloc/test/stress/large_microbench.c b/deps/jemalloc/test/stress/large_microbench.c
new file mode 100644
index 0000000..c66b33a
--- /dev/null
+++ b/deps/jemalloc/test/stress/large_microbench.c
@@ -0,0 +1,33 @@
+#include "test/jemalloc_test.h"
+#include "test/bench.h"
+
+static void
+large_mallocx_free(void) {
+	/*
+	 * We go a bit larger than the large minclass on its own to better
+	 * expose costs from things like zeroing.
+	 */
+	void *p = mallocx(SC_LARGE_MINCLASS, MALLOCX_TCACHE_NONE);
+	assert_ptr_not_null(p, "mallocx shouldn't fail");
+	free(p);
+}
+
+static void
+small_mallocx_free(void) {
+	void *p = mallocx(16, 0);
+	assert_ptr_not_null(p, "mallocx shouldn't fail");
+	free(p);
+}
+
+TEST_BEGIN(test_large_vs_small) {
+	compare_funcs(100*1000, 1*1000*1000, "large mallocx",
+	    large_mallocx_free, "small mallocx", small_mallocx_free);
+}
+TEST_END
+
+int
+main(void) {
+	return test_no_reentrancy(
+	    test_large_vs_small);
+}
+
diff --git a/deps/jemalloc/test/stress/mallctl.c b/deps/jemalloc/test/stress/mallctl.c
new file mode 100644
index 0000000..d29b311
--- /dev/null
+++ b/deps/jemalloc/test/stress/mallctl.c
@@ -0,0 +1,74 @@
+#include "test/jemalloc_test.h"
+#include "test/bench.h"
+
+static void
+mallctl_short(void) {
+	const char *version;
+	size_t sz = sizeof(version);
+	int err = mallctl("version", &version, &sz, NULL, 0);
+	assert_d_eq(err, 0, "mallctl failure");
+}
+
+size_t mib_short[1];
+
+static void
+mallctlbymib_short(void) {
+	size_t miblen = sizeof(mib_short)/sizeof(mib_short[0]);
+	const char *version;
+	size_t sz = sizeof(version);
+	int err = mallctlbymib(mib_short, miblen, &version, &sz, NULL, 0);
+	assert_d_eq(err, 0, "mallctlbymib failure");
+}
+
+TEST_BEGIN(test_mallctl_vs_mallctlbymib_short) {
+	size_t miblen = sizeof(mib_short)/sizeof(mib_short[0]);
+
+	int err = mallctlnametomib("version", mib_short, &miblen);
+	assert_d_eq(err, 0, "mallctlnametomib failure");
+	compare_funcs(10*1000*1000, 10*1000*1000, "mallctl_short",
+	    mallctl_short, "mallctlbymib_short", mallctlbymib_short);
+}
+TEST_END
+
+static void
+mallctl_long(void) {
+	uint64_t nmalloc;
+	size_t sz = sizeof(nmalloc);
+	int err = mallctl("stats.arenas.0.bins.0.nmalloc", &nmalloc, &sz, NULL,
+	    0);
+	assert_d_eq(err, 0, "mallctl failure");
+}
+
+size_t mib_long[6];
+
+static void
+mallctlbymib_long(void) {
+	size_t miblen = sizeof(mib_long)/sizeof(mib_long[0]);
+	uint64_t nmalloc;
+	size_t sz = sizeof(nmalloc);
+	int err = mallctlbymib(mib_long, miblen, &nmalloc, &sz, NULL, 0);
+	assert_d_eq(err, 0, "mallctlbymib failure");
+}
+
+TEST_BEGIN(test_mallctl_vs_mallctlbymib_long) {
+	/*
+	 * We want to use the longest mallctl we have; that needs stats support
+	 * to be allowed.
+	 */
+	test_skip_if(!config_stats);
+
+	size_t miblen = sizeof(mib_long)/sizeof(mib_long[0]);
+	int err = mallctlnametomib("stats.arenas.0.bins.0.nmalloc", mib_long,
+	    &miblen);
+	assert_d_eq(err, 0, "mallctlnametomib failure");
+	compare_funcs(10*1000*1000, 10*1000*1000, "mallctl_long",
+	    mallctl_long, "mallctlbymib_long", mallctlbymib_long);
+}
+TEST_END
+
+int
+main(void) {
+	return test_no_reentrancy(
+	    test_mallctl_vs_mallctlbymib_short,
+	    test_mallctl_vs_mallctlbymib_long);
+}
diff --git a/deps/jemalloc/test/stress/microbench.c b/deps/jemalloc/test/stress/microbench.c
new file mode 100644
index 0000000..062e32f
--- /dev/null
+++ b/deps/jemalloc/test/stress/microbench.c
@@ -0,0 +1,126 @@
+#include "test/jemalloc_test.h"
+#include "test/bench.h"
+
+static void
+malloc_free(void) {
+	/* The compiler can optimize away free(malloc(1))! */
+	void *p = malloc(1);
+	if (p == NULL) {
+		test_fail("Unexpected malloc() failure");
+		return;
+	}
+	free(p);
+}
+
+static void
+mallocx_free(void) {
+	void *p = mallocx(1, 0);
+	if (p == NULL) {
+		test_fail("Unexpected mallocx() failure");
+		return;
+	}
+	free(p);
+}
+
+TEST_BEGIN(test_malloc_vs_mallocx) {
+	compare_funcs(10*1000*1000, 100*1000*1000, "malloc",
+	    malloc_free, "mallocx", mallocx_free);
+}
+TEST_END
+
+static void
+malloc_dallocx(void) {
+	void *p = malloc(1);
+	if (p == NULL) {
+		test_fail("Unexpected malloc() failure");
+		return;
+	}
+	dallocx(p, 0);
+}
+
+static void
+malloc_sdallocx(void) {
+	void *p = malloc(1);
+	if (p == NULL) {
+		test_fail("Unexpected malloc() failure");
+		return;
+	}
+	sdallocx(p, 1, 0);
+}
+
+TEST_BEGIN(test_free_vs_dallocx) {
+	compare_funcs(10*1000*1000, 100*1000*1000, "free", malloc_free,
+	    "dallocx", malloc_dallocx);
+}
+TEST_END
+
+TEST_BEGIN(test_dallocx_vs_sdallocx) {
+	compare_funcs(10*1000*1000, 100*1000*1000, "dallocx", malloc_dallocx,
+	    "sdallocx", malloc_sdallocx);
+}
+TEST_END
+
+static void
+malloc_mus_free(void) {
+	void *p;
+
+	p = malloc(1);
+	if (p == NULL) {
+		test_fail("Unexpected malloc() failure");
+		return;
+	}
+	TEST_MALLOC_SIZE(p);
+	free(p);
+}
+
+static void
+malloc_sallocx_free(void) {
+	void *p;
+
+	p = malloc(1);
+	if (p == NULL) {
+		test_fail("Unexpected malloc() failure");
+		return;
+	}
+	if (sallocx(p, 0) < 1) {
+		test_fail("Unexpected sallocx() failure");
+	}
+	free(p);
+}
+
+TEST_BEGIN(test_mus_vs_sallocx) {
+	compare_funcs(10*1000*1000, 100*1000*1000, "malloc_usable_size",
+	    malloc_mus_free, "sallocx", malloc_sallocx_free);
+}
+TEST_END
+
+static void
+malloc_nallocx_free(void) {
+	void *p;
+
+	p = malloc(1);
+	if (p == NULL) {
+		test_fail("Unexpected malloc() failure");
+		return;
+	}
+	if (nallocx(1, 0) < 1) {
+		test_fail("Unexpected nallocx() failure");
+	}
+	free(p);
+}
+
+TEST_BEGIN(test_sallocx_vs_nallocx) {
+	compare_funcs(10*1000*1000, 100*1000*1000, "sallocx",
+	    malloc_sallocx_free, "nallocx", malloc_nallocx_free);
+}
+TEST_END
+
+int
+main(void) {
+	return test_no_reentrancy(
+	    test_malloc_vs_mallocx,
+	    test_free_vs_dallocx,
+	    test_dallocx_vs_sdallocx,
+	    test_mus_vs_sallocx,
+	    test_sallocx_vs_nallocx);
+}
diff --git a/deps/jemalloc/test/test.sh.in b/deps/jemalloc/test/test.sh.in
new file mode 100644
index 0000000..39302ff
--- /dev/null
+++ b/deps/jemalloc/test/test.sh.in
@@ -0,0 +1,80 @@
+#!/bin/sh
+
+case @abi@ in
+  macho)
+    export DYLD_FALLBACK_LIBRARY_PATH="@objroot@lib"
+    ;;
+  pecoff)
+    export PATH="${PATH}:@objroot@lib"
+    ;;
+  *)
+    ;;
+esac
+
+# Make a copy of the @JEMALLOC_CPREFIX@MALLOC_CONF passed in to this script, so
+# it can be repeatedly concatenated with per test settings.
+export MALLOC_CONF_ALL=${@JEMALLOC_CPREFIX@MALLOC_CONF}
+# Concatenate the individual test's MALLOC_CONF and MALLOC_CONF_ALL.
+export_malloc_conf() {
+  if [ "x${MALLOC_CONF}" != "x" -a "x${MALLOC_CONF_ALL}" != "x" ] ; then
+    export @JEMALLOC_CPREFIX@MALLOC_CONF="${MALLOC_CONF},${MALLOC_CONF_ALL}"
+  else
+    export @JEMALLOC_CPREFIX@MALLOC_CONF="${MALLOC_CONF}${MALLOC_CONF_ALL}"
+  fi
+}
+
+# Corresponds to test_status_t.
+pass_code=0
+skip_code=1
+fail_code=2
+
+pass_count=0
+skip_count=0
+fail_count=0
+for t in $@; do
+  if [ $pass_count -ne 0 -o $skip_count -ne 0 -o $fail_count != 0 ] ; then
+    echo
+  fi
+  echo "=== ${t} ==="
+  if [ -e "@srcroot@${t}.sh" ] ; then
+    # Source the shell script corresponding to the test in a subshell and
+    # execute the test.  This allows the shell script to set MALLOC_CONF, which
+    # is then used to set @JEMALLOC_CPREFIX@MALLOC_CONF (thus allowing the
+    # per test shell script to ignore the @JEMALLOC_CPREFIX@ detail).
+    enable_fill=@enable_fill@ \
+    enable_prof=@enable_prof@ \
+    . @srcroot@${t}.sh && \
+    export_malloc_conf && \
+    $JEMALLOC_TEST_PREFIX ${t}@exe@ @abs_srcroot@ @abs_objroot@
+  else
+    export MALLOC_CONF= && \
+    export_malloc_conf && \
+    $JEMALLOC_TEST_PREFIX ${t}@exe@ @abs_srcroot@ @abs_objroot@
+  fi
+  result_code=$?
+  case ${result_code} in
+    ${pass_code})
+      pass_count=$((pass_count+1))
+      ;;
+    ${skip_code})
+      skip_count=$((skip_count+1))
+      ;;
+    ${fail_code})
+      fail_count=$((fail_count+1))
+      ;;
+    *)
+      echo "Test harness error: ${t} w/ MALLOC_CONF=\"${MALLOC_CONF}\"" 1>&2
+      echo "Use prefix to debug, e.g. JEMALLOC_TEST_PREFIX=\"gdb --args\" sh test/test.sh ${t}" 1>&2
+      exit 1
+  esac
+done
+
+total_count=`expr ${pass_count} + ${skip_count} + ${fail_count}`
+echo
+echo "Test suite summary: pass: ${pass_count}/${total_count}, skip: ${skip_count}/${total_count}, fail: ${fail_count}/${total_count}"
+
+if [ ${fail_count} -eq 0 ] ; then
+  exit 0
+else
+  exit 1
+fi
diff --git a/deps/jemalloc/test/unit/SFMT.c b/deps/jemalloc/test/unit/SFMT.c
new file mode 100644
index 0000000..b9f85dd
--- /dev/null
+++ b/deps/jemalloc/test/unit/SFMT.c
@@ -0,0 +1,1599 @@
+/*
+ * This file derives from SFMT 1.3.3
+ * (http://www.math.sci.hiroshima-u.ac.jp/~m-mat/MT/SFMT/index.html), which was
+ * released under the terms of the following license:
+ *
+ *   Copyright (c) 2006,2007 Mutsuo Saito, Makoto Matsumoto and Hiroshima
+ *   University. All rights reserved.
+ *
+ *   Redistribution and use in source and binary forms, with or without
+ *   modification, are permitted provided that the following conditions are
+ *   met:
+ *
+ *       * Redistributions of source code must retain the above copyright
+ *         notice, this list of conditions and the following disclaimer.
+ *       * Redistributions in binary form must reproduce the above
+ *         copyright notice, this list of conditions and the following
+ *         disclaimer in the documentation and/or other materials provided
+ *         with the distribution.
+ *       * Neither the name of the Hiroshima University nor the names of
+ *         its contributors may be used to endorse or promote products
+ *         derived from this software without specific prior written
+ *         permission.
+ *
+ *   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ *   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ *   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ *   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ *   OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ *   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ *   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ *   DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ *   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ *   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ *   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+#include "test/jemalloc_test.h"
+
+#define BLOCK_SIZE 10000
+#define BLOCK_SIZE64 (BLOCK_SIZE / 2)
+#define COUNT_1 1000
+#define COUNT_2 700
+
+static const uint32_t init_gen_rand_32_expected[] = {
+	3440181298U, 1564997079U, 1510669302U, 2930277156U, 1452439940U,
+	3796268453U,  423124208U, 2143818589U, 3827219408U, 2987036003U,
+	2674978610U, 1536842514U, 2027035537U, 2534897563U, 1686527725U,
+	 545368292U, 1489013321U, 1370534252U, 4231012796U, 3994803019U,
+	1764869045U,  824597505U,  862581900U, 2469764249U,  812862514U,
+	 359318673U,  116957936U, 3367389672U, 2327178354U, 1898245200U,
+	3206507879U, 2378925033U, 1040214787U, 2524778605U, 3088428700U,
+	1417665896U,  964324147U, 2282797708U, 2456269299U,  313400376U,
+	2245093271U, 1015729427U, 2694465011U, 3246975184U, 1992793635U,
+	 463679346U, 3721104591U, 3475064196U,  856141236U, 1499559719U,
+	3522818941U, 3721533109U, 1954826617U, 1282044024U, 1543279136U,
+	1301863085U, 2669145051U, 4221477354U, 3896016841U, 3392740262U,
+	 462466863U, 1037679449U, 1228140306U,  922298197U, 1205109853U,
+	1872938061U, 3102547608U, 2742766808U, 1888626088U, 4028039414U,
+	 157593879U, 1136901695U, 4038377686U, 3572517236U, 4231706728U,
+	2997311961U, 1189931652U, 3981543765U, 2826166703U,   87159245U,
+	1721379072U, 3897926942U, 1790395498U, 2569178939U, 1047368729U,
+	2340259131U, 3144212906U, 2301169789U, 2442885464U, 3034046771U,
+	3667880593U, 3935928400U, 2372805237U, 1666397115U, 2460584504U,
+	 513866770U, 3810869743U, 2147400037U, 2792078025U, 2941761810U,
+	3212265810U,  984692259U,  346590253U, 1804179199U, 3298543443U,
+	 750108141U, 2880257022U,  243310542U, 1869036465U, 1588062513U,
+	2983949551U, 1931450364U, 4034505847U, 2735030199U, 1628461061U,
+	2539522841U,  127965585U, 3992448871U,  913388237U,  559130076U,
+	1202933193U, 4087643167U, 2590021067U, 2256240196U, 1746697293U,
+	1013913783U, 1155864921U, 2715773730U,  915061862U, 1948766573U,
+	2322882854U, 3761119102U, 1343405684U, 3078711943U, 3067431651U,
+	3245156316U, 3588354584U, 3484623306U, 3899621563U, 4156689741U,
+	3237090058U, 3880063844U,  862416318U, 4039923869U, 2303788317U,
+	3073590536U,  701653667U, 2131530884U, 3169309950U, 2028486980U,
+	 747196777U, 3620218225U,  432016035U, 1449580595U, 2772266392U,
+	 444224948U, 1662832057U, 3184055582U, 3028331792U, 1861686254U,
+	1104864179U,  342430307U, 1350510923U, 3024656237U, 1028417492U,
+	2870772950U,  290847558U, 3675663500U,  508431529U, 4264340390U,
+	2263569913U, 1669302976U,  519511383U, 2706411211U, 3764615828U,
+	3883162495U, 4051445305U, 2412729798U, 3299405164U, 3991911166U,
+	2348767304U, 2664054906U, 3763609282U,  593943581U, 3757090046U,
+	2075338894U, 2020550814U, 4287452920U, 4290140003U, 1422957317U,
+	2512716667U, 2003485045U, 2307520103U, 2288472169U, 3940751663U,
+	4204638664U, 2892583423U, 1710068300U, 3904755993U, 2363243951U,
+	3038334120U,  547099465U,  771105860U, 3199983734U, 4282046461U,
+	2298388363U,  934810218U, 2837827901U, 3952500708U, 2095130248U,
+	3083335297U,   26885281U, 3932155283U, 1531751116U, 1425227133U,
+	 495654159U, 3279634176U, 3855562207U, 3957195338U, 4159985527U,
+	 893375062U, 1875515536U, 1327247422U, 3754140693U, 1028923197U,
+	1729880440U,  805571298U,  448971099U, 2726757106U, 2749436461U,
+	2485987104U,  175337042U, 3235477922U, 3882114302U, 2020970972U,
+	 943926109U, 2762587195U, 1904195558U, 3452650564U,  108432281U,
+	3893463573U, 3977583081U, 2636504348U, 1110673525U, 3548479841U,
+	4258854744U,  980047703U, 4057175418U, 3890008292U,  145653646U,
+	3141868989U, 3293216228U, 1194331837U, 1254570642U, 3049934521U,
+	2868313360U, 2886032750U, 1110873820U,  279553524U, 3007258565U,
+	1104807822U, 3186961098U,  315764646U, 2163680838U, 3574508994U,
+	3099755655U,  191957684U, 3642656737U, 3317946149U, 3522087636U,
+	 444526410U,  779157624U, 1088229627U, 1092460223U, 1856013765U,
+	3659877367U,  368270451U,  503570716U, 3000984671U, 2742789647U,
+	 928097709U, 2914109539U,  308843566U, 2816161253U, 3667192079U,
+	2762679057U, 3395240989U, 2928925038U, 1491465914U, 3458702834U,
+	3787782576U, 2894104823U, 1296880455U, 1253636503U,  989959407U,
+	2291560361U, 2776790436U, 1913178042U, 1584677829U,  689637520U,
+	1898406878U,  688391508U, 3385234998U,  845493284U, 1943591856U,
+	2720472050U,  222695101U, 1653320868U, 2904632120U, 4084936008U,
+	1080720688U, 3938032556U,  387896427U, 2650839632U,   99042991U,
+	1720913794U, 1047186003U, 1877048040U, 2090457659U,  517087501U,
+	4172014665U, 2129713163U, 2413533132U, 2760285054U, 4129272496U,
+	1317737175U, 2309566414U, 2228873332U, 3889671280U, 1110864630U,
+	3576797776U, 2074552772U,  832002644U, 3097122623U, 2464859298U,
+	2679603822U, 1667489885U, 3237652716U, 1478413938U, 1719340335U,
+	2306631119U,  639727358U, 3369698270U,  226902796U, 2099920751U,
+	1892289957U, 2201594097U, 3508197013U, 3495811856U, 3900381493U,
+	 841660320U, 3974501451U, 3360949056U, 1676829340U,  728899254U,
+	2047809627U, 2390948962U,  670165943U, 3412951831U, 4189320049U,
+	1911595255U, 2055363086U,  507170575U,  418219594U, 4141495280U,
+	2692088692U, 4203630654U, 3540093932U,  791986533U, 2237921051U,
+	2526864324U, 2956616642U, 1394958700U, 1983768223U, 1893373266U,
+	 591653646U,  228432437U, 1611046598U, 3007736357U, 1040040725U,
+	2726180733U, 2789804360U, 4263568405U,  829098158U, 3847722805U,
+	1123578029U, 1804276347U,  997971319U, 4203797076U, 4185199713U,
+	2811733626U, 2343642194U, 2985262313U, 1417930827U, 3759587724U,
+	1967077982U, 1585223204U, 1097475516U, 1903944948U,  740382444U,
+	1114142065U, 1541796065U, 1718384172U, 1544076191U, 1134682254U,
+	3519754455U, 2866243923U,  341865437U,  645498576U, 2690735853U,
+	1046963033U, 2493178460U, 1187604696U, 1619577821U,  488503634U,
+	3255768161U, 2306666149U, 1630514044U, 2377698367U, 2751503746U,
+	3794467088U, 1796415981U, 3657173746U,  409136296U, 1387122342U,
+	1297726519U,  219544855U, 4270285558U,  437578827U, 1444698679U,
+	2258519491U,  963109892U, 3982244073U, 3351535275U,  385328496U,
+	1804784013U,  698059346U, 3920535147U,  708331212U,  784338163U,
+	 785678147U, 1238376158U, 1557298846U, 2037809321U,  271576218U,
+	4145155269U, 1913481602U, 2763691931U,  588981080U, 1201098051U,
+	3717640232U, 1509206239U,  662536967U, 3180523616U, 1133105435U,
+	2963500837U, 2253971215U, 3153642623U, 1066925709U, 2582781958U,
+	3034720222U, 1090798544U, 2942170004U, 4036187520U,  686972531U,
+	2610990302U, 2641437026U, 1837562420U,  722096247U, 1315333033U,
+	2102231203U, 3402389208U, 3403698140U, 1312402831U, 2898426558U,
+	 814384596U,  385649582U, 1916643285U, 1924625106U, 2512905582U,
+	2501170304U, 4275223366U, 2841225246U, 1467663688U, 3563567847U,
+	2969208552U,  884750901U,  102992576U,  227844301U, 3681442994U,
+	3502881894U, 4034693299U, 1166727018U, 1697460687U, 1737778332U,
+	1787161139U, 1053003655U, 1215024478U, 2791616766U, 2525841204U,
+	1629323443U,    3233815U, 2003823032U, 3083834263U, 2379264872U,
+	3752392312U, 1287475550U, 3770904171U, 3004244617U, 1502117784U,
+	 918698423U, 2419857538U, 3864502062U, 1751322107U, 2188775056U,
+	4018728324U,  983712955U,  440071928U, 3710838677U, 2001027698U,
+	3994702151U,   22493119U, 3584400918U, 3446253670U, 4254789085U,
+	1405447860U, 1240245579U, 1800644159U, 1661363424U, 3278326132U,
+	3403623451U,   67092802U, 2609352193U, 3914150340U, 1814842761U,
+	3610830847U,  591531412U, 3880232807U, 1673505890U, 2585326991U,
+	1678544474U, 3148435887U, 3457217359U, 1193226330U, 2816576908U,
+	 154025329U,  121678860U, 1164915738U,  973873761U,  269116100U,
+	  52087970U,  744015362U,  498556057U,   94298882U, 1563271621U,
+	2383059628U, 4197367290U, 3958472990U, 2592083636U, 2906408439U,
+	1097742433U, 3924840517U,  264557272U, 2292287003U, 3203307984U,
+	4047038857U, 3820609705U, 2333416067U, 1839206046U, 3600944252U,
+	3412254904U,  583538222U, 2390557166U, 4140459427U, 2810357445U,
+	 226777499U, 2496151295U, 2207301712U, 3283683112U,  611630281U,
+	1933218215U, 3315610954U, 3889441987U, 3719454256U, 3957190521U,
+	1313998161U, 2365383016U, 3146941060U, 1801206260U,  796124080U,
+	2076248581U, 1747472464U, 3254365145U,  595543130U, 3573909503U,
+	3758250204U, 2020768540U, 2439254210U,   93368951U, 3155792250U,
+	2600232980U, 3709198295U, 3894900440U, 2971850836U, 1578909644U,
+	1443493395U, 2581621665U, 3086506297U, 2443465861U,  558107211U,
+	1519367835U,  249149686U,  908102264U, 2588765675U, 1232743965U,
+	1001330373U, 3561331654U, 2259301289U, 1564977624U, 3835077093U,
+	 727244906U, 4255738067U, 1214133513U, 2570786021U, 3899704621U,
+	1633861986U, 1636979509U, 1438500431U,   58463278U, 2823485629U,
+	2297430187U, 2926781924U, 3371352948U, 1864009023U, 2722267973U,
+	1444292075U,  437703973U, 1060414512U,  189705863U,  910018135U,
+	4077357964U,  884213423U, 2644986052U, 3973488374U, 1187906116U,
+	2331207875U,  780463700U, 3713351662U, 3854611290U,  412805574U,
+	2978462572U, 2176222820U,  829424696U, 2790788332U, 2750819108U,
+	1594611657U, 3899878394U, 3032870364U, 1702887682U, 1948167778U,
+	  14130042U,  192292500U,  947227076U,   90719497U, 3854230320U,
+	 784028434U, 2142399787U, 1563449646U, 2844400217U,  819143172U,
+	2883302356U, 2328055304U, 1328532246U, 2603885363U, 3375188924U,
+	 933941291U, 3627039714U, 2129697284U, 2167253953U, 2506905438U,
+	1412424497U, 2981395985U, 1418359660U, 2925902456U,   52752784U,
+	3713667988U, 3924669405U,  648975707U, 1145520213U, 4018650664U,
+	3805915440U, 2380542088U, 2013260958U, 3262572197U, 2465078101U,
+	1114540067U, 3728768081U, 2396958768U,  590672271U,  904818725U,
+	4263660715U,  700754408U, 1042601829U, 4094111823U, 4274838909U,
+	2512692617U, 2774300207U, 2057306915U, 3470942453U,   99333088U,
+	1142661026U, 2889931380U,   14316674U, 2201179167U,  415289459U,
+	 448265759U, 3515142743U, 3254903683U,  246633281U, 1184307224U,
+	2418347830U, 2092967314U, 2682072314U, 2558750234U, 2000352263U,
+	1544150531U,  399010405U, 1513946097U,  499682937U,  461167460U,
+	3045570638U, 1633669705U,  851492362U, 4052801922U, 2055266765U,
+	 635556996U,  368266356U, 2385737383U, 3218202352U, 2603772408U,
+	 349178792U,  226482567U, 3102426060U, 3575998268U, 2103001871U,
+	3243137071U,  225500688U, 1634718593U, 4283311431U, 4292122923U,
+	3842802787U,  811735523U,  105712518U,  663434053U, 1855889273U,
+	2847972595U, 1196355421U, 2552150115U, 4254510614U, 3752181265U,
+	3430721819U, 3828705396U, 3436287905U, 3441964937U, 4123670631U,
+	 353001539U,  459496439U, 3799690868U, 1293777660U, 2761079737U,
+	 498096339U, 3398433374U, 4080378380U, 2304691596U, 2995729055U,
+	4134660419U, 3903444024U, 3576494993U,  203682175U, 3321164857U,
+	2747963611U,   79749085U, 2992890370U, 1240278549U, 1772175713U,
+	2111331972U, 2655023449U, 1683896345U, 2836027212U, 3482868021U,
+	2489884874U,  756853961U, 2298874501U, 4013448667U, 4143996022U,
+	2948306858U, 4132920035U, 1283299272U,  995592228U, 3450508595U,
+	1027845759U, 1766942720U, 3861411826U, 1446861231U,   95974993U,
+	3502263554U, 1487532194U,  601502472U, 4129619129U,  250131773U,
+	2050079547U, 3198903947U, 3105589778U, 4066481316U, 3026383978U,
+	2276901713U,  365637751U, 2260718426U, 1394775634U, 1791172338U,
+	2690503163U, 2952737846U, 1568710462U,  732623190U, 2980358000U,
+	1053631832U, 1432426951U, 3229149635U, 1854113985U, 3719733532U,
+	3204031934U,  735775531U,  107468620U, 3734611984U,  631009402U,
+	3083622457U, 4109580626U,  159373458U, 1301970201U, 4132389302U,
+	1293255004U,  847182752U, 4170022737U,   96712900U, 2641406755U,
+	1381727755U,  405608287U, 4287919625U, 1703554290U, 3589580244U,
+	2911403488U,    2166565U, 2647306451U, 2330535117U, 1200815358U,
+	1165916754U,  245060911U, 4040679071U, 3684908771U, 2452834126U,
+	2486872773U, 2318678365U, 2940627908U, 1837837240U, 3447897409U,
+	4270484676U, 1495388728U, 3754288477U, 4204167884U, 1386977705U,
+	2692224733U, 3076249689U, 4109568048U, 4170955115U, 4167531356U,
+	4020189950U, 4261855038U, 3036907575U, 3410399885U, 3076395737U,
+	1046178638U,  144496770U,  230725846U, 3349637149U,   17065717U,
+	2809932048U, 2054581785U, 3608424964U, 3259628808U,  134897388U,
+	3743067463U,  257685904U, 3795656590U, 1562468719U, 3589103904U,
+	3120404710U,  254684547U, 2653661580U, 3663904795U, 2631942758U,
+	1063234347U, 2609732900U, 2332080715U, 3521125233U, 1180599599U,
+	1935868586U, 4110970440U,  296706371U, 2128666368U, 1319875791U,
+	1570900197U, 3096025483U, 1799882517U, 1928302007U, 1163707758U,
+	1244491489U, 3533770203U,  567496053U, 2757924305U, 2781639343U,
+	2818420107U,  560404889U, 2619609724U, 4176035430U, 2511289753U,
+	2521842019U, 3910553502U, 2926149387U, 3302078172U, 4237118867U,
+	 330725126U,  367400677U,  888239854U,  545570454U, 4259590525U,
+	 134343617U, 1102169784U, 1647463719U, 3260979784U, 1518840883U,
+	3631537963U, 3342671457U, 1301549147U, 2083739356U,  146593792U,
+	3217959080U,  652755743U, 2032187193U, 3898758414U, 1021358093U,
+	4037409230U, 2176407931U, 3427391950U, 2883553603U,  985613827U,
+	3105265092U, 3423168427U, 3387507672U,  467170288U, 2141266163U,
+	3723870208U,  916410914U, 1293987799U, 2652584950U,  769160137U,
+	3205292896U, 1561287359U, 1684510084U, 3136055621U, 3765171391U,
+	 639683232U, 2639569327U, 1218546948U, 4263586685U, 3058215773U,
+	2352279820U,  401870217U, 2625822463U, 1529125296U, 2981801895U,
+	1191285226U, 4027725437U, 3432700217U, 4098835661U,  971182783U,
+	2443861173U, 3881457123U, 3874386651U,  457276199U, 2638294160U,
+	4002809368U,  421169044U, 1112642589U, 3076213779U, 3387033971U,
+	2499610950U, 3057240914U, 1662679783U,  461224431U, 1168395933U
+};
+static const uint32_t init_by_array_32_expected[] = {
+	2920711183U, 3885745737U, 3501893680U,  856470934U, 1421864068U,
+	 277361036U, 1518638004U, 2328404353U, 3355513634U,   64329189U,
+	1624587673U, 3508467182U, 2481792141U, 3706480799U, 1925859037U,
+	2913275699U,  882658412U,  384641219U,  422202002U, 1873384891U,
+	2006084383U, 3924929912U, 1636718106U, 3108838742U, 1245465724U,
+	4195470535U,  779207191U, 1577721373U, 1390469554U, 2928648150U,
+	 121399709U, 3170839019U, 4044347501U,  953953814U, 3821710850U,
+	3085591323U, 3666535579U, 3577837737U, 2012008410U, 3565417471U,
+	4044408017U,  433600965U, 1637785608U, 1798509764U,  860770589U,
+	3081466273U, 3982393409U, 2451928325U, 3437124742U, 4093828739U,
+	3357389386U, 2154596123U,  496568176U, 2650035164U, 2472361850U,
+	   3438299U, 2150366101U, 1577256676U, 3802546413U, 1787774626U,
+	4078331588U, 3706103141U,  170391138U, 3806085154U, 1680970100U,
+	1961637521U, 3316029766U,  890610272U, 1453751581U, 1430283664U,
+	3051057411U, 3597003186U,  542563954U, 3796490244U, 1690016688U,
+	3448752238U,  440702173U,  347290497U, 1121336647U, 2540588620U,
+	 280881896U, 2495136428U,  213707396U,   15104824U, 2946180358U,
+	 659000016U,  566379385U, 2614030979U, 2855760170U,  334526548U,
+	2315569495U, 2729518615U,  564745877U, 1263517638U, 3157185798U,
+	1604852056U, 1011639885U, 2950579535U, 2524219188U,  312951012U,
+	1528896652U, 1327861054U, 2846910138U, 3966855905U, 2536721582U,
+	 855353911U, 1685434729U, 3303978929U, 1624872055U, 4020329649U,
+	3164802143U, 1642802700U, 1957727869U, 1792352426U, 3334618929U,
+	2631577923U, 3027156164U,  842334259U, 3353446843U, 1226432104U,
+	1742801369U, 3552852535U, 3471698828U, 1653910186U, 3380330939U,
+	2313782701U, 3351007196U, 2129839995U, 1800682418U, 4085884420U,
+	1625156629U, 3669701987U,  615211810U, 3294791649U, 4131143784U,
+	2590843588U, 3207422808U, 3275066464U,  561592872U, 3957205738U,
+	3396578098U,   48410678U, 3505556445U, 1005764855U, 3920606528U,
+	2936980473U, 2378918600U, 2404449845U, 1649515163U,  701203563U,
+	3705256349U,   83714199U, 3586854132U,  922978446U, 2863406304U,
+	3523398907U, 2606864832U, 2385399361U, 3171757816U, 4262841009U,
+	3645837721U, 1169579486U, 3666433897U, 3174689479U, 1457866976U,
+	3803895110U, 3346639145U, 1907224409U, 1978473712U, 1036712794U,
+	 980754888U, 1302782359U, 1765252468U,  459245755U, 3728923860U,
+	1512894209U, 2046491914U,  207860527U,  514188684U, 2288713615U,
+	1597354672U, 3349636117U, 2357291114U, 3995796221U,  945364213U,
+	1893326518U, 3770814016U, 1691552714U, 2397527410U,  967486361U,
+	 776416472U, 4197661421U,  951150819U, 1852770983U, 4044624181U,
+	1399439738U, 4194455275U, 2284037669U, 1550734958U, 3321078108U,
+	1865235926U, 2912129961U, 2664980877U, 1357572033U, 2600196436U,
+	2486728200U, 2372668724U, 1567316966U, 2374111491U, 1839843570U,
+	  20815612U, 3727008608U, 3871996229U,  824061249U, 1932503978U,
+	3404541726U,  758428924U, 2609331364U, 1223966026U, 1299179808U,
+	 648499352U, 2180134401U,  880821170U, 3781130950U,  113491270U,
+	1032413764U, 4185884695U, 2490396037U, 1201932817U, 4060951446U,
+	4165586898U, 1629813212U, 2887821158U,  415045333U,  628926856U,
+	2193466079U, 3391843445U, 2227540681U, 1907099846U, 2848448395U,
+	1717828221U, 1372704537U, 1707549841U, 2294058813U, 2101214437U,
+	2052479531U, 1695809164U, 3176587306U, 2632770465U,   81634404U,
+	1603220563U,  644238487U,  302857763U,  897352968U, 2613146653U,
+	1391730149U, 4245717312U, 4191828749U, 1948492526U, 2618174230U,
+	3992984522U, 2178852787U, 3596044509U, 3445573503U, 2026614616U,
+	 915763564U, 3415689334U, 2532153403U, 3879661562U, 2215027417U,
+	3111154986U, 2929478371U,  668346391U, 1152241381U, 2632029711U,
+	3004150659U, 2135025926U,  948690501U, 2799119116U, 4228829406U,
+	1981197489U, 4209064138U,  684318751U, 3459397845U,  201790843U,
+	4022541136U, 3043635877U,  492509624U, 3263466772U, 1509148086U,
+	 921459029U, 3198857146U,  705479721U, 3835966910U, 3603356465U,
+	 576159741U, 1742849431U,  594214882U, 2055294343U, 3634861861U,
+	 449571793U, 3246390646U, 3868232151U, 1479156585U, 2900125656U,
+	2464815318U, 3960178104U, 1784261920U,   18311476U, 3627135050U,
+	 644609697U,  424968996U,  919890700U, 2986824110U,  816423214U,
+	4003562844U, 1392714305U, 1757384428U, 2569030598U,  995949559U,
+	3875659880U, 2933807823U, 2752536860U, 2993858466U, 4030558899U,
+	2770783427U, 2775406005U, 2777781742U, 1931292655U,  472147933U,
+	3865853827U, 2726470545U, 2668412860U, 2887008249U,  408979190U,
+	3578063323U, 3242082049U, 1778193530U,   27981909U, 2362826515U,
+	 389875677U, 1043878156U,  581653903U, 3830568952U,  389535942U,
+	3713523185U, 2768373359U, 2526101582U, 1998618197U, 1160859704U,
+	3951172488U, 1098005003U,  906275699U, 3446228002U, 2220677963U,
+	2059306445U,  132199571U,  476838790U, 1868039399U, 3097344807U,
+	 857300945U,  396345050U, 2835919916U, 1782168828U, 1419519470U,
+	4288137521U,  819087232U,  596301494U,  872823172U, 1526888217U,
+	 805161465U, 1116186205U, 2829002754U, 2352620120U,  620121516U,
+	 354159268U, 3601949785U,  209568138U, 1352371732U, 2145977349U,
+	4236871834U, 1539414078U, 3558126206U, 3224857093U, 4164166682U,
+	3817553440U, 3301780278U, 2682696837U, 3734994768U, 1370950260U,
+	1477421202U, 2521315749U, 1330148125U, 1261554731U, 2769143688U,
+	3554756293U, 4235882678U, 3254686059U, 3530579953U, 1215452615U,
+	3574970923U, 4057131421U,  589224178U, 1000098193U,  171190718U,
+	2521852045U, 2351447494U, 2284441580U, 2646685513U, 3486933563U,
+	3789864960U, 1190528160U, 1702536782U, 1534105589U, 4262946827U,
+	2726686826U, 3584544841U, 2348270128U, 2145092281U, 2502718509U,
+	1027832411U, 3571171153U, 1287361161U, 4011474411U, 3241215351U,
+	2419700818U,  971242709U, 1361975763U, 1096842482U, 3271045537U,
+	  81165449U,  612438025U, 3912966678U, 1356929810U,  733545735U,
+	 537003843U, 1282953084U,  884458241U,  588930090U, 3930269801U,
+	2961472450U, 1219535534U, 3632251943U,  268183903U, 1441240533U,
+	3653903360U, 3854473319U, 2259087390U, 2548293048U, 2022641195U,
+	2105543911U, 1764085217U, 3246183186U,  482438805U,  888317895U,
+	2628314765U, 2466219854U,  717546004U, 2322237039U,  416725234U,
+	1544049923U, 1797944973U, 3398652364U, 3111909456U,  485742908U,
+	2277491072U, 1056355088U, 3181001278U,  129695079U, 2693624550U,
+	1764438564U, 3797785470U,  195503713U, 3266519725U, 2053389444U,
+	1961527818U, 3400226523U, 3777903038U, 2597274307U, 4235851091U,
+	4094406648U, 2171410785U, 1781151386U, 1378577117U,  654643266U,
+	3424024173U, 3385813322U,  679385799U,  479380913U,  681715441U,
+	3096225905U,  276813409U, 3854398070U, 2721105350U,  831263315U,
+	3276280337U, 2628301522U, 3984868494U, 1466099834U, 2104922114U,
+	1412672743U,  820330404U, 3491501010U,  942735832U,  710652807U,
+	3972652090U,  679881088U,   40577009U, 3705286397U, 2815423480U,
+	3566262429U,  663396513U, 3777887429U, 4016670678U,  404539370U,
+	1142712925U, 1140173408U, 2913248352U, 2872321286U,  263751841U,
+	3175196073U, 3162557581U, 2878996619U,   75498548U, 3836833140U,
+	3284664959U, 1157523805U,  112847376U,  207855609U, 1337979698U,
+	1222578451U,  157107174U,  901174378U, 3883717063U, 1618632639U,
+	1767889440U, 4264698824U, 1582999313U,  884471997U, 2508825098U,
+	3756370771U, 2457213553U, 3565776881U, 3709583214U,  915609601U,
+	 460833524U, 1091049576U,   85522880U,    2553251U,  132102809U,
+	2429882442U, 2562084610U, 1386507633U, 4112471229U,   21965213U,
+	1981516006U, 2418435617U, 3054872091U, 4251511224U, 2025783543U,
+	1916911512U, 2454491136U, 3938440891U, 3825869115U, 1121698605U,
+	3463052265U,  802340101U, 1912886800U, 4031997367U, 3550640406U,
+	1596096923U,  610150600U,  431464457U, 2541325046U,  486478003U,
+	 739704936U, 2862696430U, 3037903166U, 1129749694U, 2611481261U,
+	1228993498U,  510075548U, 3424962587U, 2458689681U,  818934833U,
+	4233309125U, 1608196251U, 3419476016U, 1858543939U, 2682166524U,
+	3317854285U,  631986188U, 3008214764U,  613826412U, 3567358221U,
+	3512343882U, 1552467474U, 3316162670U, 1275841024U, 4142173454U,
+	 565267881U,  768644821U,  198310105U, 2396688616U, 1837659011U,
+	 203429334U,  854539004U, 4235811518U, 3338304926U, 3730418692U,
+	3852254981U, 3032046452U, 2329811860U, 2303590566U, 2696092212U,
+	3894665932U,  145835667U,  249563655U, 1932210840U, 2431696407U,
+	3312636759U,  214962629U, 2092026914U, 3020145527U, 4073039873U,
+	2739105705U, 1308336752U,  855104522U, 2391715321U,   67448785U,
+	 547989482U,  854411802U, 3608633740U,  431731530U,  537375589U,
+	3888005760U,  696099141U,  397343236U, 1864511780U,   44029739U,
+	1729526891U, 1993398655U, 2010173426U, 2591546756U,  275223291U,
+	1503900299U, 4217765081U, 2185635252U, 1122436015U, 3550155364U,
+	 681707194U, 3260479338U,  933579397U, 2983029282U, 2505504587U,
+	2667410393U, 2962684490U, 4139721708U, 2658172284U, 2452602383U,
+	2607631612U, 1344296217U, 3075398709U, 2949785295U, 1049956168U,
+	3917185129U, 2155660174U, 3280524475U, 1503827867U,  674380765U,
+	1918468193U, 3843983676U,  634358221U, 2538335643U, 1873351298U,
+	3368723763U, 2129144130U, 3203528633U, 3087174986U, 2691698871U,
+	2516284287U,   24437745U, 1118381474U, 2816314867U, 2448576035U,
+	4281989654U,  217287825U,  165872888U, 2628995722U, 3533525116U,
+	2721669106U,  872340568U, 3429930655U, 3309047304U, 3916704967U,
+	3270160355U, 1348884255U, 1634797670U,  881214967U, 4259633554U,
+	 174613027U, 1103974314U, 1625224232U, 2678368291U, 1133866707U,
+	3853082619U, 4073196549U, 1189620777U,  637238656U,  930241537U,
+	4042750792U, 3842136042U, 2417007212U, 2524907510U, 1243036827U,
+	1282059441U, 3764588774U, 1394459615U, 2323620015U, 1166152231U,
+	3307479609U, 3849322257U, 3507445699U, 4247696636U,  758393720U,
+	 967665141U, 1095244571U, 1319812152U,  407678762U, 2640605208U,
+	2170766134U, 3663594275U, 4039329364U, 2512175520U,  725523154U,
+	2249807004U, 3312617979U, 2414634172U, 1278482215U,  349206484U,
+	1573063308U, 1196429124U, 3873264116U, 2400067801U,  268795167U,
+	 226175489U, 2961367263U, 1968719665U,   42656370U, 1010790699U,
+	 561600615U, 2422453992U, 3082197735U, 1636700484U, 3977715296U,
+	3125350482U, 3478021514U, 2227819446U, 1540868045U, 3061908980U,
+	1087362407U, 3625200291U,  361937537U,  580441897U, 1520043666U,
+	2270875402U, 1009161260U, 2502355842U, 4278769785U,  473902412U,
+	1057239083U, 1905829039U, 1483781177U, 2080011417U, 1207494246U,
+	1806991954U, 2194674403U, 3455972205U,  807207678U, 3655655687U,
+	 674112918U,  195425752U, 3917890095U, 1874364234U, 1837892715U,
+	3663478166U, 1548892014U, 2570748714U, 2049929836U, 2167029704U,
+	 697543767U, 3499545023U, 3342496315U, 1725251190U, 3561387469U,
+	2905606616U, 1580182447U, 3934525927U, 4103172792U, 1365672522U,
+	1534795737U, 3308667416U, 2841911405U, 3943182730U, 4072020313U,
+	3494770452U, 3332626671U,   55327267U,  478030603U,  411080625U,
+	3419529010U, 1604767823U, 3513468014U,  570668510U,  913790824U,
+	2283967995U,  695159462U, 3825542932U, 4150698144U, 1829758699U,
+	 202895590U, 1609122645U, 1267651008U, 2910315509U, 2511475445U,
+	2477423819U, 3932081579U,  900879979U, 2145588390U, 2670007504U,
+	 580819444U, 1864996828U, 2526325979U, 1019124258U,  815508628U,
+	2765933989U, 1277301341U, 3006021786U,  855540956U,  288025710U,
+	1919594237U, 2331223864U,  177452412U, 2475870369U, 2689291749U,
+	 865194284U,  253432152U, 2628531804U, 2861208555U, 2361597573U,
+	1653952120U, 1039661024U, 2159959078U, 3709040440U, 3564718533U,
+	2596878672U, 2041442161U,   31164696U, 2662962485U, 3665637339U,
+	1678115244U, 2699839832U, 3651968520U, 3521595541U,  458433303U,
+	2423096824U,   21831741U,  380011703U, 2498168716U,  861806087U,
+	1673574843U, 4188794405U, 2520563651U, 2632279153U, 2170465525U,
+	4171949898U, 3886039621U, 1661344005U, 3424285243U,  992588372U,
+	2500984144U, 2993248497U, 3590193895U, 1535327365U,  515645636U,
+	 131633450U, 3729760261U, 1613045101U, 3254194278U,   15889678U,
+	1493590689U,  244148718U, 2991472662U, 1401629333U,  777349878U,
+	2501401703U, 4285518317U, 3794656178U,  955526526U, 3442142820U,
+	3970298374U,  736025417U, 2737370764U, 1271509744U,  440570731U,
+	 136141826U, 1596189518U,  923399175U,  257541519U, 3505774281U,
+	2194358432U, 2518162991U, 1379893637U, 2667767062U, 3748146247U,
+	1821712620U, 3923161384U, 1947811444U, 2392527197U, 4127419685U,
+	1423694998U, 4156576871U, 1382885582U, 3420127279U, 3617499534U,
+	2994377493U, 4038063986U, 1918458672U, 2983166794U, 4200449033U,
+	 353294540U, 1609232588U,  243926648U, 2332803291U,  507996832U,
+	2392838793U, 4075145196U, 2060984340U, 4287475136U,   88232602U,
+	2491531140U, 4159725633U, 2272075455U,  759298618U,  201384554U,
+	 838356250U, 1416268324U,  674476934U,   90795364U,  141672229U,
+	3660399588U, 4196417251U, 3249270244U, 3774530247U,   59587265U,
+	3683164208U,   19392575U, 1463123697U, 1882205379U,  293780489U,
+	2553160622U, 2933904694U,  675638239U, 2851336944U, 1435238743U,
+	2448730183U,  804436302U, 2119845972U,  322560608U, 4097732704U,
+	2987802540U,  641492617U, 2575442710U, 4217822703U, 3271835300U,
+	2836418300U, 3739921620U, 2138378768U, 2879771855U, 4294903423U,
+	3121097946U, 2603440486U, 2560820391U, 1012930944U, 2313499967U,
+	 584489368U, 3431165766U,  897384869U, 2062537737U, 2847889234U,
+	3742362450U, 2951174585U, 4204621084U, 1109373893U, 3668075775U,
+	2750138839U, 3518055702U,  733072558U, 4169325400U,  788493625U
+};
+static const uint64_t init_gen_rand_64_expected[] = {
+	KQU(16924766246869039260), KQU( 8201438687333352714),
+	KQU( 2265290287015001750), KQU(18397264611805473832),
+	KQU( 3375255223302384358), KQU( 6345559975416828796),
+	KQU(18229739242790328073), KQU( 7596792742098800905),
+	KQU(  255338647169685981), KQU( 2052747240048610300),
+	KQU(18328151576097299343), KQU(12472905421133796567),
+	KQU(11315245349717600863), KQU(16594110197775871209),
+	KQU(15708751964632456450), KQU(10452031272054632535),
+	KQU(11097646720811454386), KQU( 4556090668445745441),
+	KQU(17116187693090663106), KQU(14931526836144510645),
+	KQU( 9190752218020552591), KQU( 9625800285771901401),
+	KQU(13995141077659972832), KQU( 5194209094927829625),
+	KQU( 4156788379151063303), KQU( 8523452593770139494),
+	KQU(14082382103049296727), KQU( 2462601863986088483),
+	KQU( 3030583461592840678), KQU( 5221622077872827681),
+	KQU( 3084210671228981236), KQU(13956758381389953823),
+	KQU(13503889856213423831), KQU(15696904024189836170),
+	KQU( 4612584152877036206), KQU( 6231135538447867881),
+	KQU(10172457294158869468), KQU( 6452258628466708150),
+	KQU(14044432824917330221), KQU(  370168364480044279),
+	KQU(10102144686427193359), KQU(  667870489994776076),
+	KQU( 2732271956925885858), KQU(18027788905977284151),
+	KQU(15009842788582923859), KQU( 7136357960180199542),
+	KQU(15901736243475578127), KQU(16951293785352615701),
+	KQU(10551492125243691632), KQU(17668869969146434804),
+	KQU(13646002971174390445), KQU( 9804471050759613248),
+	KQU( 5511670439655935493), KQU(18103342091070400926),
+	KQU(17224512747665137533), KQU(15534627482992618168),
+	KQU( 1423813266186582647), KQU(15821176807932930024),
+	KQU(   30323369733607156), KQU(11599382494723479403),
+	KQU(  653856076586810062), KQU( 3176437395144899659),
+	KQU(14028076268147963917), KQU(16156398271809666195),
+	KQU( 3166955484848201676), KQU( 5746805620136919390),
+	KQU(17297845208891256593), KQU(11691653183226428483),
+	KQU(17900026146506981577), KQU(15387382115755971042),
+	KQU(16923567681040845943), KQU( 8039057517199388606),
+	KQU(11748409241468629263), KQU(  794358245539076095),
+	KQU(13438501964693401242), KQU(14036803236515618962),
+	KQU( 5252311215205424721), KQU(17806589612915509081),
+	KQU( 6802767092397596006), KQU(14212120431184557140),
+	KQU( 1072951366761385712), KQU(13098491780722836296),
+	KQU( 9466676828710797353), KQU(12673056849042830081),
+	KQU(12763726623645357580), KQU(16468961652999309493),
+	KQU(15305979875636438926), KQU(17444713151223449734),
+	KQU( 5692214267627883674), KQU(13049589139196151505),
+	KQU(  880115207831670745), KQU( 1776529075789695498),
+	KQU(16695225897801466485), KQU(10666901778795346845),
+	KQU( 6164389346722833869), KQU( 2863817793264300475),
+	KQU( 9464049921886304754), KQU( 3993566636740015468),
+	KQU( 9983749692528514136), KQU(16375286075057755211),
+	KQU(16042643417005440820), KQU(11445419662923489877),
+	KQU( 7999038846885158836), KQU( 6721913661721511535),
+	KQU( 5363052654139357320), KQU( 1817788761173584205),
+	KQU(13290974386445856444), KQU( 4650350818937984680),
+	KQU( 8219183528102484836), KQU( 1569862923500819899),
+	KQU( 4189359732136641860), KQU(14202822961683148583),
+	KQU( 4457498315309429058), KQU(13089067387019074834),
+	KQU(11075517153328927293), KQU(10277016248336668389),
+	KQU( 7070509725324401122), KQU(17808892017780289380),
+	KQU(13143367339909287349), KQU( 1377743745360085151),
+	KQU( 5749341807421286485), KQU(14832814616770931325),
+	KQU( 7688820635324359492), KQU(10960474011539770045),
+	KQU(   81970066653179790), KQU(12619476072607878022),
+	KQU( 4419566616271201744), KQU(15147917311750568503),
+	KQU( 5549739182852706345), KQU( 7308198397975204770),
+	KQU(13580425496671289278), KQU(17070764785210130301),
+	KQU( 8202832846285604405), KQU( 6873046287640887249),
+	KQU( 6927424434308206114), KQU( 6139014645937224874),
+	KQU(10290373645978487639), KQU(15904261291701523804),
+	KQU( 9628743442057826883), KQU(18383429096255546714),
+	KQU( 4977413265753686967), KQU( 7714317492425012869),
+	KQU( 9025232586309926193), KQU(14627338359776709107),
+	KQU(14759849896467790763), KQU(10931129435864423252),
+	KQU( 4588456988775014359), KQU(10699388531797056724),
+	KQU(  468652268869238792), KQU( 5755943035328078086),
+	KQU( 2102437379988580216), KQU( 9986312786506674028),
+	KQU( 2654207180040945604), KQU( 8726634790559960062),
+	KQU(  100497234871808137), KQU( 2800137176951425819),
+	KQU( 6076627612918553487), KQU( 5780186919186152796),
+	KQU( 8179183595769929098), KQU( 6009426283716221169),
+	KQU( 2796662551397449358), KQU( 1756961367041986764),
+	KQU( 6972897917355606205), KQU(14524774345368968243),
+	KQU( 2773529684745706940), KQU( 4853632376213075959),
+	KQU( 4198177923731358102), KQU( 8271224913084139776),
+	KQU( 2741753121611092226), KQU(16782366145996731181),
+	KQU(15426125238972640790), KQU(13595497100671260342),
+	KQU( 3173531022836259898), KQU( 6573264560319511662),
+	KQU(18041111951511157441), KQU( 2351433581833135952),
+	KQU( 3113255578908173487), KQU( 1739371330877858784),
+	KQU(16046126562789165480), KQU( 8072101652214192925),
+	KQU(15267091584090664910), KQU( 9309579200403648940),
+	KQU( 5218892439752408722), KQU(14492477246004337115),
+	KQU(17431037586679770619), KQU( 7385248135963250480),
+	KQU( 9580144956565560660), KQU( 4919546228040008720),
+	KQU(15261542469145035584), KQU(18233297270822253102),
+	KQU( 5453248417992302857), KQU( 9309519155931460285),
+	KQU(10342813012345291756), KQU(15676085186784762381),
+	KQU(15912092950691300645), KQU( 9371053121499003195),
+	KQU( 9897186478226866746), KQU(14061858287188196327),
+	KQU(  122575971620788119), KQU(12146750969116317754),
+	KQU( 4438317272813245201), KQU( 8332576791009527119),
+	KQU(13907785691786542057), KQU(10374194887283287467),
+	KQU( 2098798755649059566), KQU( 3416235197748288894),
+	KQU( 8688269957320773484), KQU( 7503964602397371571),
+	KQU(16724977015147478236), KQU( 9461512855439858184),
+	KQU(13259049744534534727), KQU( 3583094952542899294),
+	KQU( 8764245731305528292), KQU(13240823595462088985),
+	KQU(13716141617617910448), KQU(18114969519935960955),
+	KQU( 2297553615798302206), KQU( 4585521442944663362),
+	KQU(17776858680630198686), KQU( 4685873229192163363),
+	KQU(  152558080671135627), KQU(15424900540842670088),
+	KQU(13229630297130024108), KQU(17530268788245718717),
+	KQU(16675633913065714144), KQU( 3158912717897568068),
+	KQU(15399132185380087288), KQU( 7401418744515677872),
+	KQU(13135412922344398535), KQU( 6385314346100509511),
+	KQU(13962867001134161139), KQU(10272780155442671999),
+	KQU(12894856086597769142), KQU(13340877795287554994),
+	KQU(12913630602094607396), KQU(12543167911119793857),
+	KQU(17343570372251873096), KQU(10959487764494150545),
+	KQU( 6966737953093821128), KQU(13780699135496988601),
+	KQU( 4405070719380142046), KQU(14923788365607284982),
+	KQU( 2869487678905148380), KQU( 6416272754197188403),
+	KQU(15017380475943612591), KQU( 1995636220918429487),
+	KQU( 3402016804620122716), KQU(15800188663407057080),
+	KQU(11362369990390932882), KQU(15262183501637986147),
+	KQU(10239175385387371494), KQU( 9352042420365748334),
+	KQU( 1682457034285119875), KQU( 1724710651376289644),
+	KQU( 2038157098893817966), KQU( 9897825558324608773),
+	KQU( 1477666236519164736), KQU(16835397314511233640),
+	KQU(10370866327005346508), KQU(10157504370660621982),
+	KQU(12113904045335882069), KQU(13326444439742783008),
+	KQU(11302769043000765804), KQU(13594979923955228484),
+	KQU(11779351762613475968), KQU( 3786101619539298383),
+	KQU( 8021122969180846063), KQU(15745904401162500495),
+	KQU(10762168465993897267), KQU(13552058957896319026),
+	KQU(11200228655252462013), KQU( 5035370357337441226),
+	KQU( 7593918984545500013), KQU( 5418554918361528700),
+	KQU( 4858270799405446371), KQU( 9974659566876282544),
+	KQU(18227595922273957859), KQU( 2772778443635656220),
+	KQU(14285143053182085385), KQU( 9939700992429600469),
+	KQU(12756185904545598068), KQU( 2020783375367345262),
+	KQU(   57026775058331227), KQU(  950827867930065454),
+	KQU( 6602279670145371217), KQU( 2291171535443566929),
+	KQU( 5832380724425010313), KQU( 1220343904715982285),
+	KQU(17045542598598037633), KQU(15460481779702820971),
+	KQU(13948388779949365130), KQU(13975040175430829518),
+	KQU(17477538238425541763), KQU(11104663041851745725),
+	KQU(15860992957141157587), KQU(14529434633012950138),
+	KQU( 2504838019075394203), KQU( 7512113882611121886),
+	KQU( 4859973559980886617), KQU( 1258601555703250219),
+	KQU(15594548157514316394), KQU( 4516730171963773048),
+	KQU(11380103193905031983), KQU( 6809282239982353344),
+	KQU(18045256930420065002), KQU( 2453702683108791859),
+	KQU(  977214582986981460), KQU( 2006410402232713466),
+	KQU( 6192236267216378358), KQU( 3429468402195675253),
+	KQU(18146933153017348921), KQU(17369978576367231139),
+	KQU( 1246940717230386603), KQU(11335758870083327110),
+	KQU(14166488801730353682), KQU( 9008573127269635732),
+	KQU(10776025389820643815), KQU(15087605441903942962),
+	KQU( 1359542462712147922), KQU(13898874411226454206),
+	KQU(17911176066536804411), KQU( 9435590428600085274),
+	KQU(  294488509967864007), KQU( 8890111397567922046),
+	KQU( 7987823476034328778), KQU(13263827582440967651),
+	KQU( 7503774813106751573), KQU(14974747296185646837),
+	KQU( 8504765037032103375), KQU(17340303357444536213),
+	KQU( 7704610912964485743), KQU( 8107533670327205061),
+	KQU( 9062969835083315985), KQU(16968963142126734184),
+	KQU(12958041214190810180), KQU( 2720170147759570200),
+	KQU( 2986358963942189566), KQU(14884226322219356580),
+	KQU(  286224325144368520), KQU(11313800433154279797),
+	KQU(18366849528439673248), KQU(17899725929482368789),
+	KQU( 3730004284609106799), KQU( 1654474302052767205),
+	KQU( 5006698007047077032), KQU( 8196893913601182838),
+	KQU(15214541774425211640), KQU(17391346045606626073),
+	KQU( 8369003584076969089), KQU( 3939046733368550293),
+	KQU(10178639720308707785), KQU( 2180248669304388697),
+	KQU(   62894391300126322), KQU( 9205708961736223191),
+	KQU( 6837431058165360438), KQU( 3150743890848308214),
+	KQU(17849330658111464583), KQU(12214815643135450865),
+	KQU(13410713840519603402), KQU( 3200778126692046802),
+	KQU(13354780043041779313), KQU(  800850022756886036),
+	KQU(15660052933953067433), KQU( 6572823544154375676),
+	KQU(11030281857015819266), KQU(12682241941471433835),
+	KQU(11654136407300274693), KQU( 4517795492388641109),
+	KQU( 9757017371504524244), KQU(17833043400781889277),
+	KQU(12685085201747792227), KQU(10408057728835019573),
+	KQU(   98370418513455221), KQU( 6732663555696848598),
+	KQU(13248530959948529780), KQU( 3530441401230622826),
+	KQU(18188251992895660615), KQU( 1847918354186383756),
+	KQU( 1127392190402660921), KQU(11293734643143819463),
+	KQU( 3015506344578682982), KQU(13852645444071153329),
+	KQU( 2121359659091349142), KQU( 1294604376116677694),
+	KQU( 5616576231286352318), KQU( 7112502442954235625),
+	KQU(11676228199551561689), KQU(12925182803007305359),
+	KQU( 7852375518160493082), KQU( 1136513130539296154),
+	KQU( 5636923900916593195), KQU( 3221077517612607747),
+	KQU(17784790465798152513), KQU( 3554210049056995938),
+	KQU(17476839685878225874), KQU( 3206836372585575732),
+	KQU( 2765333945644823430), KQU(10080070903718799528),
+	KQU( 5412370818878286353), KQU( 9689685887726257728),
+	KQU( 8236117509123533998), KQU( 1951139137165040214),
+	KQU( 4492205209227980349), KQU(16541291230861602967),
+	KQU( 1424371548301437940), KQU( 9117562079669206794),
+	KQU(14374681563251691625), KQU(13873164030199921303),
+	KQU( 6680317946770936731), KQU(15586334026918276214),
+	KQU(10896213950976109802), KQU( 9506261949596413689),
+	KQU( 9903949574308040616), KQU( 6038397344557204470),
+	KQU(  174601465422373648), KQU(15946141191338238030),
+	KQU(17142225620992044937), KQU( 7552030283784477064),
+	KQU( 2947372384532947997), KQU(  510797021688197711),
+	KQU( 4962499439249363461), KQU(   23770320158385357),
+	KQU(  959774499105138124), KQU( 1468396011518788276),
+	KQU( 2015698006852312308), KQU( 4149400718489980136),
+	KQU( 5992916099522371188), KQU(10819182935265531076),
+	KQU(16189787999192351131), KQU(  342833961790261950),
+	KQU(12470830319550495336), KQU(18128495041912812501),
+	KQU( 1193600899723524337), KQU( 9056793666590079770),
+	KQU( 2154021227041669041), KQU( 4963570213951235735),
+	KQU( 4865075960209211409), KQU( 2097724599039942963),
+	KQU( 2024080278583179845), KQU(11527054549196576736),
+	KQU(10650256084182390252), KQU( 4808408648695766755),
+	KQU( 1642839215013788844), KQU(10607187948250398390),
+	KQU( 7076868166085913508), KQU(  730522571106887032),
+	KQU(12500579240208524895), KQU( 4484390097311355324),
+	KQU(15145801330700623870), KQU( 8055827661392944028),
+	KQU( 5865092976832712268), KQU(15159212508053625143),
+	KQU( 3560964582876483341), KQU( 4070052741344438280),
+	KQU( 6032585709886855634), KQU(15643262320904604873),
+	KQU( 2565119772293371111), KQU(  318314293065348260),
+	KQU(15047458749141511872), KQU( 7772788389811528730),
+	KQU( 7081187494343801976), KQU( 6465136009467253947),
+	KQU(10425940692543362069), KQU(  554608190318339115),
+	KQU(14796699860302125214), KQU( 1638153134431111443),
+	KQU(10336967447052276248), KQU( 8412308070396592958),
+	KQU( 4004557277152051226), KQU( 8143598997278774834),
+	KQU(16413323996508783221), KQU(13139418758033994949),
+	KQU( 9772709138335006667), KQU( 2818167159287157659),
+	KQU(17091740573832523669), KQU(14629199013130751608),
+	KQU(18268322711500338185), KQU( 8290963415675493063),
+	KQU( 8830864907452542588), KQU( 1614839084637494849),
+	KQU(14855358500870422231), KQU( 3472996748392519937),
+	KQU(15317151166268877716), KQU( 5825895018698400362),
+	KQU(16730208429367544129), KQU(10481156578141202800),
+	KQU( 4746166512382823750), KQU(12720876014472464998),
+	KQU( 8825177124486735972), KQU(13733447296837467838),
+	KQU( 6412293741681359625), KQU( 8313213138756135033),
+	KQU(11421481194803712517), KQU( 7997007691544174032),
+	KQU( 6812963847917605930), KQU( 9683091901227558641),
+	KQU(14703594165860324713), KQU( 1775476144519618309),
+	KQU( 2724283288516469519), KQU(  717642555185856868),
+	KQU( 8736402192215092346), KQU(11878800336431381021),
+	KQU( 4348816066017061293), KQU( 6115112756583631307),
+	KQU( 9176597239667142976), KQU(12615622714894259204),
+	KQU(10283406711301385987), KQU( 5111762509485379420),
+	KQU( 3118290051198688449), KQU( 7345123071632232145),
+	KQU( 9176423451688682359), KQU( 4843865456157868971),
+	KQU(12008036363752566088), KQU(12058837181919397720),
+	KQU( 2145073958457347366), KQU( 1526504881672818067),
+	KQU( 3488830105567134848), KQU(13208362960674805143),
+	KQU( 4077549672899572192), KQU( 7770995684693818365),
+	KQU( 1398532341546313593), KQU(12711859908703927840),
+	KQU( 1417561172594446813), KQU(17045191024194170604),
+	KQU( 4101933177604931713), KQU(14708428834203480320),
+	KQU(17447509264469407724), KQU(14314821973983434255),
+	KQU(17990472271061617265), KQU( 5087756685841673942),
+	KQU(12797820586893859939), KQU( 1778128952671092879),
+	KQU( 3535918530508665898), KQU( 9035729701042481301),
+	KQU(14808661568277079962), KQU(14587345077537747914),
+	KQU(11920080002323122708), KQU( 6426515805197278753),
+	KQU( 3295612216725984831), KQU(11040722532100876120),
+	KQU(12305952936387598754), KQU(16097391899742004253),
+	KQU( 4908537335606182208), KQU(12446674552196795504),
+	KQU(16010497855816895177), KQU( 9194378874788615551),
+	KQU( 3382957529567613384), KQU( 5154647600754974077),
+	KQU( 9801822865328396141), KQU( 9023662173919288143),
+	KQU(17623115353825147868), KQU( 8238115767443015816),
+	KQU(15811444159859002560), KQU( 9085612528904059661),
+	KQU( 6888601089398614254), KQU(  258252992894160189),
+	KQU( 6704363880792428622), KQU( 6114966032147235763),
+	KQU(11075393882690261875), KQU( 8797664238933620407),
+	KQU( 5901892006476726920), KQU( 5309780159285518958),
+	KQU(14940808387240817367), KQU(14642032021449656698),
+	KQU( 9808256672068504139), KQU( 3670135111380607658),
+	KQU(11211211097845960152), KQU( 1474304506716695808),
+	KQU(15843166204506876239), KQU( 7661051252471780561),
+	KQU(10170905502249418476), KQU( 7801416045582028589),
+	KQU( 2763981484737053050), KQU( 9491377905499253054),
+	KQU(16201395896336915095), KQU( 9256513756442782198),
+	KQU( 5411283157972456034), KQU( 5059433122288321676),
+	KQU( 4327408006721123357), KQU( 9278544078834433377),
+	KQU( 7601527110882281612), KQU(11848295896975505251),
+	KQU(12096998801094735560), KQU(14773480339823506413),
+	KQU(15586227433895802149), KQU(12786541257830242872),
+	KQU( 6904692985140503067), KQU( 5309011515263103959),
+	KQU(12105257191179371066), KQU(14654380212442225037),
+	KQU( 2556774974190695009), KQU( 4461297399927600261),
+	KQU(14888225660915118646), KQU(14915459341148291824),
+	KQU( 2738802166252327631), KQU( 6047155789239131512),
+	KQU(12920545353217010338), KQU(10697617257007840205),
+	KQU( 2751585253158203504), KQU(13252729159780047496),
+	KQU(14700326134672815469), KQU(14082527904374600529),
+	KQU(16852962273496542070), KQU(17446675504235853907),
+	KQU(15019600398527572311), KQU(12312781346344081551),
+	KQU(14524667935039810450), KQU( 5634005663377195738),
+	KQU(11375574739525000569), KQU( 2423665396433260040),
+	KQU( 5222836914796015410), KQU( 4397666386492647387),
+	KQU( 4619294441691707638), KQU(  665088602354770716),
+	KQU(13246495665281593610), KQU( 6564144270549729409),
+	KQU(10223216188145661688), KQU( 3961556907299230585),
+	KQU(11543262515492439914), KQU(16118031437285993790),
+	KQU( 7143417964520166465), KQU(13295053515909486772),
+	KQU(   40434666004899675), KQU(17127804194038347164),
+	KQU( 8599165966560586269), KQU( 8214016749011284903),
+	KQU(13725130352140465239), KQU( 5467254474431726291),
+	KQU( 7748584297438219877), KQU(16933551114829772472),
+	KQU( 2169618439506799400), KQU( 2169787627665113463),
+	KQU(17314493571267943764), KQU(18053575102911354912),
+	KQU(11928303275378476973), KQU(11593850925061715550),
+	KQU(17782269923473589362), KQU( 3280235307704747039),
+	KQU( 6145343578598685149), KQU(17080117031114086090),
+	KQU(18066839902983594755), KQU( 6517508430331020706),
+	KQU( 8092908893950411541), KQU(12558378233386153732),
+	KQU( 4476532167973132976), KQU(16081642430367025016),
+	KQU( 4233154094369139361), KQU( 8693630486693161027),
+	KQU(11244959343027742285), KQU(12273503967768513508),
+	KQU(14108978636385284876), KQU( 7242414665378826984),
+	KQU( 6561316938846562432), KQU( 8601038474994665795),
+	KQU(17532942353612365904), KQU(17940076637020912186),
+	KQU( 7340260368823171304), KQU( 7061807613916067905),
+	KQU(10561734935039519326), KQU(17990796503724650862),
+	KQU( 6208732943911827159), KQU(  359077562804090617),
+	KQU(14177751537784403113), KQU(10659599444915362902),
+	KQU(15081727220615085833), KQU(13417573895659757486),
+	KQU(15513842342017811524), KQU(11814141516204288231),
+	KQU( 1827312513875101814), KQU( 2804611699894603103),
+	KQU(17116500469975602763), KQU(12270191815211952087),
+	KQU(12256358467786024988), KQU(18435021722453971267),
+	KQU(  671330264390865618), KQU(  476504300460286050),
+	KQU(16465470901027093441), KQU( 4047724406247136402),
+	KQU( 1322305451411883346), KQU( 1388308688834322280),
+	KQU( 7303989085269758176), KQU( 9323792664765233642),
+	KQU( 4542762575316368936), KQU(17342696132794337618),
+	KQU( 4588025054768498379), KQU(13415475057390330804),
+	KQU(17880279491733405570), KQU(10610553400618620353),
+	KQU( 3180842072658960139), KQU(13002966655454270120),
+	KQU( 1665301181064982826), KQU( 7083673946791258979),
+	KQU(  190522247122496820), KQU(17388280237250677740),
+	KQU( 8430770379923642945), KQU(12987180971921668584),
+	KQU( 2311086108365390642), KQU( 2870984383579822345),
+	KQU(14014682609164653318), KQU(14467187293062251484),
+	KQU(  192186361147413298), KQU(15171951713531796524),
+	KQU( 9900305495015948728), KQU(17958004775615466344),
+	KQU(14346380954498606514), KQU(18040047357617407096),
+	KQU( 5035237584833424532), KQU(15089555460613972287),
+	KQU( 4131411873749729831), KQU( 1329013581168250330),
+	KQU(10095353333051193949), KQU(10749518561022462716),
+	KQU( 9050611429810755847), KQU(15022028840236655649),
+	KQU( 8775554279239748298), KQU(13105754025489230502),
+	KQU(15471300118574167585), KQU(   89864764002355628),
+	KQU( 8776416323420466637), KQU( 5280258630612040891),
+	KQU( 2719174488591862912), KQU( 7599309137399661994),
+	KQU(15012887256778039979), KQU(14062981725630928925),
+	KQU(12038536286991689603), KQU( 7089756544681775245),
+	KQU(10376661532744718039), KQU( 1265198725901533130),
+	KQU(13807996727081142408), KQU( 2935019626765036403),
+	KQU( 7651672460680700141), KQU( 3644093016200370795),
+	KQU( 2840982578090080674), KQU(17956262740157449201),
+	KQU(18267979450492880548), KQU(11799503659796848070),
+	KQU( 9942537025669672388), KQU(11886606816406990297),
+	KQU( 5488594946437447576), KQU( 7226714353282744302),
+	KQU( 3784851653123877043), KQU(  878018453244803041),
+	KQU(12110022586268616085), KQU(  734072179404675123),
+	KQU(11869573627998248542), KQU(  469150421297783998),
+	KQU(  260151124912803804), KQU(11639179410120968649),
+	KQU( 9318165193840846253), KQU(12795671722734758075),
+	KQU(15318410297267253933), KQU(  691524703570062620),
+	KQU( 5837129010576994601), KQU(15045963859726941052),
+	KQU( 5850056944932238169), KQU(12017434144750943807),
+	KQU( 7447139064928956574), KQU( 3101711812658245019),
+	KQU(16052940704474982954), KQU(18195745945986994042),
+	KQU( 8932252132785575659), KQU(13390817488106794834),
+	KQU(11582771836502517453), KQU( 4964411326683611686),
+	KQU( 2195093981702694011), KQU(14145229538389675669),
+	KQU(16459605532062271798), KQU(  866316924816482864),
+	KQU( 4593041209937286377), KQU( 8415491391910972138),
+	KQU( 4171236715600528969), KQU(16637569303336782889),
+	KQU( 2002011073439212680), KQU(17695124661097601411),
+	KQU( 4627687053598611702), KQU( 7895831936020190403),
+	KQU( 8455951300917267802), KQU( 2923861649108534854),
+	KQU( 8344557563927786255), KQU( 6408671940373352556),
+	KQU(12210227354536675772), KQU(14294804157294222295),
+	KQU(10103022425071085127), KQU(10092959489504123771),
+	KQU( 6554774405376736268), KQU(12629917718410641774),
+	KQU( 6260933257596067126), KQU( 2460827021439369673),
+	KQU( 2541962996717103668), KQU(  597377203127351475),
+	KQU( 5316984203117315309), KQU( 4811211393563241961),
+	KQU(13119698597255811641), KQU( 8048691512862388981),
+	KQU(10216818971194073842), KQU( 4612229970165291764),
+	KQU(10000980798419974770), KQU( 6877640812402540687),
+	KQU( 1488727563290436992), KQU( 2227774069895697318),
+	KQU(11237754507523316593), KQU(13478948605382290972),
+	KQU( 1963583846976858124), KQU( 5512309205269276457),
+	KQU( 3972770164717652347), KQU( 3841751276198975037),
+	KQU(10283343042181903117), KQU( 8564001259792872199),
+	KQU(16472187244722489221), KQU( 8953493499268945921),
+	KQU( 3518747340357279580), KQU( 4003157546223963073),
+	KQU( 3270305958289814590), KQU( 3966704458129482496),
+	KQU( 8122141865926661939), KQU(14627734748099506653),
+	KQU(13064426990862560568), KQU( 2414079187889870829),
+	KQU( 5378461209354225306), KQU(10841985740128255566),
+	KQU(  538582442885401738), KQU( 7535089183482905946),
+	KQU(16117559957598879095), KQU( 8477890721414539741),
+	KQU( 1459127491209533386), KQU(17035126360733620462),
+	KQU( 8517668552872379126), KQU(10292151468337355014),
+	KQU(17081267732745344157), KQU(13751455337946087178),
+	KQU(14026945459523832966), KQU( 6653278775061723516),
+	KQU(10619085543856390441), KQU( 2196343631481122885),
+	KQU(10045966074702826136), KQU(10082317330452718282),
+	KQU( 5920859259504831242), KQU( 9951879073426540617),
+	KQU( 7074696649151414158), KQU(15808193543879464318),
+	KQU( 7385247772746953374), KQU( 3192003544283864292),
+	KQU(18153684490917593847), KQU(12423498260668568905),
+	KQU(10957758099756378169), KQU(11488762179911016040),
+	KQU( 2099931186465333782), KQU(11180979581250294432),
+	KQU( 8098916250668367933), KQU( 3529200436790763465),
+	KQU(12988418908674681745), KQU( 6147567275954808580),
+	KQU( 3207503344604030989), KQU(10761592604898615360),
+	KQU(  229854861031893504), KQU( 8809853962667144291),
+	KQU(13957364469005693860), KQU( 7634287665224495886),
+	KQU(12353487366976556874), KQU( 1134423796317152034),
+	KQU( 2088992471334107068), KQU( 7393372127190799698),
+	KQU( 1845367839871058391), KQU(  207922563987322884),
+	KQU(11960870813159944976), KQU(12182120053317317363),
+	KQU(17307358132571709283), KQU(13871081155552824936),
+	KQU(18304446751741566262), KQU( 7178705220184302849),
+	KQU(10929605677758824425), KQU(16446976977835806844),
+	KQU(13723874412159769044), KQU( 6942854352100915216),
+	KQU( 1726308474365729390), KQU( 2150078766445323155),
+	KQU(15345558947919656626), KQU(12145453828874527201),
+	KQU( 2054448620739726849), KQU( 2740102003352628137),
+	KQU(11294462163577610655), KQU(  756164283387413743),
+	KQU(17841144758438810880), KQU(10802406021185415861),
+	KQU( 8716455530476737846), KQU( 6321788834517649606),
+	KQU(14681322910577468426), KQU(17330043563884336387),
+	KQU(12701802180050071614), KQU(14695105111079727151),
+	KQU( 5112098511654172830), KQU( 4957505496794139973),
+	KQU( 8270979451952045982), KQU(12307685939199120969),
+	KQU(12425799408953443032), KQU( 8376410143634796588),
+	KQU(16621778679680060464), KQU( 3580497854566660073),
+	KQU( 1122515747803382416), KQU(  857664980960597599),
+	KQU( 6343640119895925918), KQU(12878473260854462891),
+	KQU(10036813920765722626), KQU(14451335468363173812),
+	KQU( 5476809692401102807), KQU(16442255173514366342),
+	KQU(13060203194757167104), KQU(14354124071243177715),
+	KQU(15961249405696125227), KQU(13703893649690872584),
+	KQU(  363907326340340064), KQU( 6247455540491754842),
+	KQU(12242249332757832361), KQU(  156065475679796717),
+	KQU( 9351116235749732355), KQU( 4590350628677701405),
+	KQU( 1671195940982350389), KQU(13501398458898451905),
+	KQU( 6526341991225002255), KQU( 1689782913778157592),
+	KQU( 7439222350869010334), KQU(13975150263226478308),
+	KQU(11411961169932682710), KQU(17204271834833847277),
+	KQU(  541534742544435367), KQU( 6591191931218949684),
+	KQU( 2645454775478232486), KQU( 4322857481256485321),
+	KQU( 8477416487553065110), KQU(12902505428548435048),
+	KQU(  971445777981341415), KQU(14995104682744976712),
+	KQU( 4243341648807158063), KQU( 8695061252721927661),
+	KQU( 5028202003270177222), KQU( 2289257340915567840),
+	KQU(13870416345121866007), KQU(13994481698072092233),
+	KQU( 6912785400753196481), KQU( 2278309315841980139),
+	KQU( 4329765449648304839), KQU( 5963108095785485298),
+	KQU( 4880024847478722478), KQU(16015608779890240947),
+	KQU( 1866679034261393544), KQU(  914821179919731519),
+	KQU( 9643404035648760131), KQU( 2418114953615593915),
+	KQU(  944756836073702374), KQU(15186388048737296834),
+	KQU( 7723355336128442206), KQU( 7500747479679599691),
+	KQU(18013961306453293634), KQU( 2315274808095756456),
+	KQU(13655308255424029566), KQU(17203800273561677098),
+	KQU( 1382158694422087756), KQU( 5090390250309588976),
+	KQU(  517170818384213989), KQU( 1612709252627729621),
+	KQU( 1330118955572449606), KQU(  300922478056709885),
+	KQU(18115693291289091987), KQU(13491407109725238321),
+	KQU(15293714633593827320), KQU( 5151539373053314504),
+	KQU( 5951523243743139207), KQU(14459112015249527975),
+	KQU( 5456113959000700739), KQU( 3877918438464873016),
+	KQU(12534071654260163555), KQU(15871678376893555041),
+	KQU(11005484805712025549), KQU(16353066973143374252),
+	KQU( 4358331472063256685), KQU( 8268349332210859288),
+	KQU(12485161590939658075), KQU(13955993592854471343),
+	KQU( 5911446886848367039), KQU(14925834086813706974),
+	KQU( 6590362597857994805), KQU( 1280544923533661875),
+	KQU( 1637756018947988164), KQU( 4734090064512686329),
+	KQU(16693705263131485912), KQU( 6834882340494360958),
+	KQU( 8120732176159658505), KQU( 2244371958905329346),
+	KQU(10447499707729734021), KQU( 7318742361446942194),
+	KQU( 8032857516355555296), KQU(14023605983059313116),
+	KQU( 1032336061815461376), KQU( 9840995337876562612),
+	KQU( 9869256223029203587), KQU(12227975697177267636),
+	KQU(12728115115844186033), KQU( 7752058479783205470),
+	KQU(  729733219713393087), KQU(12954017801239007622)
+};
+static const uint64_t init_by_array_64_expected[] = {
+	KQU( 2100341266307895239), KQU( 8344256300489757943),
+	KQU(15687933285484243894), KQU( 8268620370277076319),
+	KQU(12371852309826545459), KQU( 8800491541730110238),
+	KQU(18113268950100835773), KQU( 2886823658884438119),
+	KQU( 3293667307248180724), KQU( 9307928143300172731),
+	KQU( 7688082017574293629), KQU(  900986224735166665),
+	KQU( 9977972710722265039), KQU( 6008205004994830552),
+	KQU(  546909104521689292), KQU( 7428471521869107594),
+	KQU(14777563419314721179), KQU(16116143076567350053),
+	KQU( 5322685342003142329), KQU( 4200427048445863473),
+	KQU( 4693092150132559146), KQU(13671425863759338582),
+	KQU( 6747117460737639916), KQU( 4732666080236551150),
+	KQU( 5912839950611941263), KQU( 3903717554504704909),
+	KQU( 2615667650256786818), KQU(10844129913887006352),
+	KQU(13786467861810997820), KQU(14267853002994021570),
+	KQU(13767807302847237439), KQU(16407963253707224617),
+	KQU( 4802498363698583497), KQU( 2523802839317209764),
+	KQU( 3822579397797475589), KQU( 8950320572212130610),
+	KQU( 3745623504978342534), KQU(16092609066068482806),
+	KQU( 9817016950274642398), KQU(10591660660323829098),
+	KQU(11751606650792815920), KQU( 5122873818577122211),
+	KQU(17209553764913936624), KQU( 6249057709284380343),
+	KQU(15088791264695071830), KQU(15344673071709851930),
+	KQU( 4345751415293646084), KQU( 2542865750703067928),
+	KQU(13520525127852368784), KQU(18294188662880997241),
+	KQU( 3871781938044881523), KQU( 2873487268122812184),
+	KQU(15099676759482679005), KQU(15442599127239350490),
+	KQU( 6311893274367710888), KQU( 3286118760484672933),
+	KQU( 4146067961333542189), KQU(13303942567897208770),
+	KQU( 8196013722255630418), KQU( 4437815439340979989),
+	KQU(15433791533450605135), KQU( 4254828956815687049),
+	KQU( 1310903207708286015), KQU(10529182764462398549),
+	KQU(14900231311660638810), KQU( 9727017277104609793),
+	KQU( 1821308310948199033), KQU(11628861435066772084),
+	KQU( 9469019138491546924), KQU( 3145812670532604988),
+	KQU( 9938468915045491919), KQU( 1562447430672662142),
+	KQU(13963995266697989134), KQU( 3356884357625028695),
+	KQU( 4499850304584309747), KQU( 8456825817023658122),
+	KQU(10859039922814285279), KQU( 8099512337972526555),
+	KQU(  348006375109672149), KQU(11919893998241688603),
+	KQU( 1104199577402948826), KQU(16689191854356060289),
+	KQU(10992552041730168078), KQU( 7243733172705465836),
+	KQU( 5668075606180319560), KQU(18182847037333286970),
+	KQU( 4290215357664631322), KQU( 4061414220791828613),
+	KQU(13006291061652989604), KQU( 7140491178917128798),
+	KQU(12703446217663283481), KQU( 5500220597564558267),
+	KQU(10330551509971296358), KQU(15958554768648714492),
+	KQU( 5174555954515360045), KQU( 1731318837687577735),
+	KQU( 3557700801048354857), KQU(13764012341928616198),
+	KQU(13115166194379119043), KQU( 7989321021560255519),
+	KQU( 2103584280905877040), KQU( 9230788662155228488),
+	KQU(16396629323325547654), KQU(  657926409811318051),
+	KQU(15046700264391400727), KQU( 5120132858771880830),
+	KQU( 7934160097989028561), KQU( 6963121488531976245),
+	KQU(17412329602621742089), KQU(15144843053931774092),
+	KQU(17204176651763054532), KQU(13166595387554065870),
+	KQU( 8590377810513960213), KQU( 5834365135373991938),
+	KQU( 7640913007182226243), KQU( 3479394703859418425),
+	KQU(16402784452644521040), KQU( 4993979809687083980),
+	KQU(13254522168097688865), KQU(15643659095244365219),
+	KQU( 5881437660538424982), KQU(11174892200618987379),
+	KQU(  254409966159711077), KQU(17158413043140549909),
+	KQU( 3638048789290376272), KQU( 1376816930299489190),
+	KQU( 4622462095217761923), KQU(15086407973010263515),
+	KQU(13253971772784692238), KQU( 5270549043541649236),
+	KQU(11182714186805411604), KQU(12283846437495577140),
+	KQU( 5297647149908953219), KQU(10047451738316836654),
+	KQU( 4938228100367874746), KQU(12328523025304077923),
+	KQU( 3601049438595312361), KQU( 9313624118352733770),
+	KQU(13322966086117661798), KQU(16660005705644029394),
+	KQU(11337677526988872373), KQU(13869299102574417795),
+	KQU(15642043183045645437), KQU( 3021755569085880019),
+	KQU( 4979741767761188161), KQU(13679979092079279587),
+	KQU( 3344685842861071743), KQU(13947960059899588104),
+	KQU(  305806934293368007), KQU( 5749173929201650029),
+	KQU(11123724852118844098), KQU(15128987688788879802),
+	KQU(15251651211024665009), KQU( 7689925933816577776),
+	KQU(16732804392695859449), KQU(17087345401014078468),
+	KQU(14315108589159048871), KQU( 4820700266619778917),
+	KQU(16709637539357958441), KQU( 4936227875177351374),
+	KQU( 2137907697912987247), KQU(11628565601408395420),
+	KQU( 2333250549241556786), KQU( 5711200379577778637),
+	KQU( 5170680131529031729), KQU(12620392043061335164),
+	KQU(   95363390101096078), KQU( 5487981914081709462),
+	KQU( 1763109823981838620), KQU( 3395861271473224396),
+	KQU( 1300496844282213595), KQU( 6894316212820232902),
+	KQU(10673859651135576674), KQU( 5911839658857903252),
+	KQU(17407110743387299102), KQU( 8257427154623140385),
+	KQU(11389003026741800267), KQU( 4070043211095013717),
+	KQU(11663806997145259025), KQU(15265598950648798210),
+	KQU(  630585789434030934), KQU( 3524446529213587334),
+	KQU( 7186424168495184211), KQU(10806585451386379021),
+	KQU(11120017753500499273), KQU( 1586837651387701301),
+	KQU(17530454400954415544), KQU( 9991670045077880430),
+	KQU( 7550997268990730180), KQU( 8640249196597379304),
+	KQU( 3522203892786893823), KQU(10401116549878854788),
+	KQU(13690285544733124852), KQU( 8295785675455774586),
+	KQU(15535716172155117603), KQU( 3112108583723722511),
+	KQU(17633179955339271113), KQU(18154208056063759375),
+	KQU( 1866409236285815666), KQU(13326075895396412882),
+	KQU( 8756261842948020025), KQU( 6281852999868439131),
+	KQU(15087653361275292858), KQU(10333923911152949397),
+	KQU( 5265567645757408500), KQU(12728041843210352184),
+	KQU( 6347959327507828759), KQU(  154112802625564758),
+	KQU(18235228308679780218), KQU( 3253805274673352418),
+	KQU( 4849171610689031197), KQU(17948529398340432518),
+	KQU(13803510475637409167), KQU(13506570190409883095),
+	KQU(15870801273282960805), KQU( 8451286481299170773),
+	KQU( 9562190620034457541), KQU( 8518905387449138364),
+	KQU(12681306401363385655), KQU( 3788073690559762558),
+	KQU( 5256820289573487769), KQU( 2752021372314875467),
+	KQU( 6354035166862520716), KQU( 4328956378309739069),
+	KQU(  449087441228269600), KQU( 5533508742653090868),
+	KQU( 1260389420404746988), KQU(18175394473289055097),
+	KQU( 1535467109660399420), KQU( 8818894282874061442),
+	KQU(12140873243824811213), KQU(15031386653823014946),
+	KQU( 1286028221456149232), KQU( 6329608889367858784),
+	KQU( 9419654354945132725), KQU( 6094576547061672379),
+	KQU(17706217251847450255), KQU( 1733495073065878126),
+	KQU(16918923754607552663), KQU( 8881949849954945044),
+	KQU(12938977706896313891), KQU(14043628638299793407),
+	KQU(18393874581723718233), KQU( 6886318534846892044),
+	KQU(14577870878038334081), KQU(13541558383439414119),
+	KQU(13570472158807588273), KQU(18300760537910283361),
+	KQU(  818368572800609205), KQU( 1417000585112573219),
+	KQU(12337533143867683655), KQU(12433180994702314480),
+	KQU(  778190005829189083), KQU(13667356216206524711),
+	KQU( 9866149895295225230), KQU(11043240490417111999),
+	KQU( 1123933826541378598), KQU( 6469631933605123610),
+	KQU(14508554074431980040), KQU(13918931242962026714),
+	KQU( 2870785929342348285), KQU(14786362626740736974),
+	KQU(13176680060902695786), KQU( 9591778613541679456),
+	KQU( 9097662885117436706), KQU(  749262234240924947),
+	KQU( 1944844067793307093), KQU( 4339214904577487742),
+	KQU( 8009584152961946551), KQU(16073159501225501777),
+	KQU( 3335870590499306217), KQU(17088312653151202847),
+	KQU( 3108893142681931848), KQU(16636841767202792021),
+	KQU(10423316431118400637), KQU( 8008357368674443506),
+	KQU(11340015231914677875), KQU(17687896501594936090),
+	KQU(15173627921763199958), KQU(  542569482243721959),
+	KQU(15071714982769812975), KQU( 4466624872151386956),
+	KQU( 1901780715602332461), KQU( 9822227742154351098),
+	KQU( 1479332892928648780), KQU( 6981611948382474400),
+	KQU( 7620824924456077376), KQU(14095973329429406782),
+	KQU( 7902744005696185404), KQU(15830577219375036920),
+	KQU(10287076667317764416), KQU(12334872764071724025),
+	KQU( 4419302088133544331), KQU(14455842851266090520),
+	KQU(12488077416504654222), KQU( 7953892017701886766),
+	KQU( 6331484925529519007), KQU( 4902145853785030022),
+	KQU(17010159216096443073), KQU(11945354668653886087),
+	KQU(15112022728645230829), KQU(17363484484522986742),
+	KQU( 4423497825896692887), KQU( 8155489510809067471),
+	KQU(  258966605622576285), KQU( 5462958075742020534),
+	KQU( 6763710214913276228), KQU( 2368935183451109054),
+	KQU(14209506165246453811), KQU( 2646257040978514881),
+	KQU( 3776001911922207672), KQU( 1419304601390147631),
+	KQU(14987366598022458284), KQU( 3977770701065815721),
+	KQU(  730820417451838898), KQU( 3982991703612885327),
+	KQU( 2803544519671388477), KQU(17067667221114424649),
+	KQU( 2922555119737867166), KQU( 1989477584121460932),
+	KQU(15020387605892337354), KQU( 9293277796427533547),
+	KQU(10722181424063557247), KQU(16704542332047511651),
+	KQU( 5008286236142089514), KQU(16174732308747382540),
+	KQU(17597019485798338402), KQU(13081745199110622093),
+	KQU( 8850305883842258115), KQU(12723629125624589005),
+	KQU( 8140566453402805978), KQU(15356684607680935061),
+	KQU(14222190387342648650), KQU(11134610460665975178),
+	KQU( 1259799058620984266), KQU(13281656268025610041),
+	KQU(  298262561068153992), KQU(12277871700239212922),
+	KQU(13911297774719779438), KQU(16556727962761474934),
+	KQU(17903010316654728010), KQU( 9682617699648434744),
+	KQU(14757681836838592850), KQU( 1327242446558524473),
+	KQU(11126645098780572792), KQU( 1883602329313221774),
+	KQU( 2543897783922776873), KQU(15029168513767772842),
+	KQU(12710270651039129878), KQU(16118202956069604504),
+	KQU(15010759372168680524), KQU( 2296827082251923948),
+	KQU(10793729742623518101), KQU(13829764151845413046),
+	KQU(17769301223184451213), KQU( 3118268169210783372),
+	KQU(17626204544105123127), KQU( 7416718488974352644),
+	KQU(10450751996212925994), KQU( 9352529519128770586),
+	KQU(  259347569641110140), KQU( 8048588892269692697),
+	KQU( 1774414152306494058), KQU(10669548347214355622),
+	KQU(13061992253816795081), KQU(18432677803063861659),
+	KQU( 8879191055593984333), KQU(12433753195199268041),
+	KQU(14919392415439730602), KQU( 6612848378595332963),
+	KQU( 6320986812036143628), KQU(10465592420226092859),
+	KQU( 4196009278962570808), KQU( 3747816564473572224),
+	KQU(17941203486133732898), KQU( 2350310037040505198),
+	KQU( 5811779859134370113), KQU(10492109599506195126),
+	KQU( 7699650690179541274), KQU( 1954338494306022961),
+	KQU(14095816969027231152), KQU( 5841346919964852061),
+	KQU(14945969510148214735), KQU( 3680200305887550992),
+	KQU( 6218047466131695792), KQU( 8242165745175775096),
+	KQU(11021371934053307357), KQU( 1265099502753169797),
+	KQU( 4644347436111321718), KQU( 3609296916782832859),
+	KQU( 8109807992218521571), KQU(18387884215648662020),
+	KQU(14656324896296392902), KQU(17386819091238216751),
+	KQU(17788300878582317152), KQU( 7919446259742399591),
+	KQU( 4466613134576358004), KQU(12928181023667938509),
+	KQU(13147446154454932030), KQU(16552129038252734620),
+	KQU( 8395299403738822450), KQU(11313817655275361164),
+	KQU(  434258809499511718), KQU( 2074882104954788676),
+	KQU( 7929892178759395518), KQU( 9006461629105745388),
+	KQU( 5176475650000323086), KQU(11128357033468341069),
+	KQU(12026158851559118955), KQU(14699716249471156500),
+	KQU(  448982497120206757), KQU( 4156475356685519900),
+	KQU( 6063816103417215727), KQU(10073289387954971479),
+	KQU( 8174466846138590962), KQU( 2675777452363449006),
+	KQU( 9090685420572474281), KQU( 6659652652765562060),
+	KQU(12923120304018106621), KQU(11117480560334526775),
+	KQU(  937910473424587511), KQU( 1838692113502346645),
+	KQU(11133914074648726180), KQU( 7922600945143884053),
+	KQU(13435287702700959550), KQU( 5287964921251123332),
+	KQU(11354875374575318947), KQU(17955724760748238133),
+	KQU(13728617396297106512), KQU( 4107449660118101255),
+	KQU( 1210269794886589623), KQU(11408687205733456282),
+	KQU( 4538354710392677887), KQU(13566803319341319267),
+	KQU(17870798107734050771), KQU( 3354318982568089135),
+	KQU( 9034450839405133651), KQU(13087431795753424314),
+	KQU(  950333102820688239), KQU( 1968360654535604116),
+	KQU(16840551645563314995), KQU( 8867501803892924995),
+	KQU(11395388644490626845), KQU( 1529815836300732204),
+	KQU(13330848522996608842), KQU( 1813432878817504265),
+	KQU( 2336867432693429560), KQU(15192805445973385902),
+	KQU( 2528593071076407877), KQU(  128459777936689248),
+	KQU( 9976345382867214866), KQU( 6208885766767996043),
+	KQU(14982349522273141706), KQU( 3099654362410737822),
+	KQU(13776700761947297661), KQU( 8806185470684925550),
+	KQU( 8151717890410585321), KQU(  640860591588072925),
+	KQU(14592096303937307465), KQU( 9056472419613564846),
+	KQU(14861544647742266352), KQU(12703771500398470216),
+	KQU( 3142372800384138465), KQU( 6201105606917248196),
+	KQU(18337516409359270184), KQU(15042268695665115339),
+	KQU(15188246541383283846), KQU(12800028693090114519),
+	KQU( 5992859621101493472), KQU(18278043971816803521),
+	KQU( 9002773075219424560), KQU( 7325707116943598353),
+	KQU( 7930571931248040822), KQU( 5645275869617023448),
+	KQU( 7266107455295958487), KQU( 4363664528273524411),
+	KQU(14313875763787479809), KQU(17059695613553486802),
+	KQU( 9247761425889940932), KQU(13704726459237593128),
+	KQU( 2701312427328909832), KQU(17235532008287243115),
+	KQU(14093147761491729538), KQU( 6247352273768386516),
+	KQU( 8268710048153268415), KQU( 7985295214477182083),
+	KQU(15624495190888896807), KQU( 3772753430045262788),
+	KQU( 9133991620474991698), KQU( 5665791943316256028),
+	KQU( 7551996832462193473), KQU(13163729206798953877),
+	KQU( 9263532074153846374), KQU( 1015460703698618353),
+	KQU(17929874696989519390), KQU(18257884721466153847),
+	KQU(16271867543011222991), KQU( 3905971519021791941),
+	KQU(16814488397137052085), KQU( 1321197685504621613),
+	KQU( 2870359191894002181), KQU(14317282970323395450),
+	KQU(13663920845511074366), KQU( 2052463995796539594),
+	KQU(14126345686431444337), KQU( 1727572121947022534),
+	KQU(17793552254485594241), KQU( 6738857418849205750),
+	KQU( 1282987123157442952), KQU(16655480021581159251),
+	KQU( 6784587032080183866), KQU(14726758805359965162),
+	KQU( 7577995933961987349), KQU(12539609320311114036),
+	KQU(10789773033385439494), KQU( 8517001497411158227),
+	KQU(10075543932136339710), KQU(14838152340938811081),
+	KQU( 9560840631794044194), KQU(17445736541454117475),
+	KQU(10633026464336393186), KQU(15705729708242246293),
+	KQU( 1117517596891411098), KQU( 4305657943415886942),
+	KQU( 4948856840533979263), KQU(16071681989041789593),
+	KQU(13723031429272486527), KQU( 7639567622306509462),
+	KQU(12670424537483090390), KQU( 9715223453097197134),
+	KQU( 5457173389992686394), KQU(  289857129276135145),
+	KQU(17048610270521972512), KQU(  692768013309835485),
+	KQU(14823232360546632057), KQU(18218002361317895936),
+	KQU( 3281724260212650204), KQU(16453957266549513795),
+	KQU( 8592711109774511881), KQU(  929825123473369579),
+	KQU(15966784769764367791), KQU( 9627344291450607588),
+	KQU(10849555504977813287), KQU( 9234566913936339275),
+	KQU( 6413807690366911210), KQU(10862389016184219267),
+	KQU(13842504799335374048), KQU( 1531994113376881174),
+	KQU( 2081314867544364459), KQU(16430628791616959932),
+	KQU( 8314714038654394368), KQU( 9155473892098431813),
+	KQU(12577843786670475704), KQU( 4399161106452401017),
+	KQU( 1668083091682623186), KQU( 1741383777203714216),
+	KQU( 2162597285417794374), KQU(15841980159165218736),
+	KQU( 1971354603551467079), KQU( 1206714764913205968),
+	KQU( 4790860439591272330), KQU(14699375615594055799),
+	KQU( 8374423871657449988), KQU(10950685736472937738),
+	KQU(  697344331343267176), KQU(10084998763118059810),
+	KQU(12897369539795983124), KQU(12351260292144383605),
+	KQU( 1268810970176811234), KQU( 7406287800414582768),
+	KQU(  516169557043807831), KQU( 5077568278710520380),
+	KQU( 3828791738309039304), KQU( 7721974069946943610),
+	KQU( 3534670260981096460), KQU( 4865792189600584891),
+	KQU(16892578493734337298), KQU( 9161499464278042590),
+	KQU(11976149624067055931), KQU(13219479887277343990),
+	KQU(14161556738111500680), KQU(14670715255011223056),
+	KQU( 4671205678403576558), KQU(12633022931454259781),
+	KQU(14821376219869187646), KQU(  751181776484317028),
+	KQU( 2192211308839047070), KQU(11787306362361245189),
+	KQU(10672375120744095707), KQU( 4601972328345244467),
+	KQU(15457217788831125879), KQU( 8464345256775460809),
+	KQU(10191938789487159478), KQU( 6184348739615197613),
+	KQU(11425436778806882100), KQU( 2739227089124319793),
+	KQU(  461464518456000551), KQU( 4689850170029177442),
+	KQU( 6120307814374078625), KQU(11153579230681708671),
+	KQU( 7891721473905347926), KQU(10281646937824872400),
+	KQU( 3026099648191332248), KQU( 8666750296953273818),
+	KQU(14978499698844363232), KQU(13303395102890132065),
+	KQU( 8182358205292864080), KQU(10560547713972971291),
+	KQU(11981635489418959093), KQU( 3134621354935288409),
+	KQU(11580681977404383968), KQU(14205530317404088650),
+	KQU( 5997789011854923157), KQU(13659151593432238041),
+	KQU(11664332114338865086), KQU( 7490351383220929386),
+	KQU( 7189290499881530378), KQU(15039262734271020220),
+	KQU( 2057217285976980055), KQU(  555570804905355739),
+	KQU(11235311968348555110), KQU(13824557146269603217),
+	KQU(16906788840653099693), KQU( 7222878245455661677),
+	KQU( 5245139444332423756), KQU( 4723748462805674292),
+	KQU(12216509815698568612), KQU(17402362976648951187),
+	KQU(17389614836810366768), KQU( 4880936484146667711),
+	KQU( 9085007839292639880), KQU(13837353458498535449),
+	KQU(11914419854360366677), KQU(16595890135313864103),
+	KQU( 6313969847197627222), KQU(18296909792163910431),
+	KQU(10041780113382084042), KQU( 2499478551172884794),
+	KQU(11057894246241189489), KQU( 9742243032389068555),
+	KQU(12838934582673196228), KQU(13437023235248490367),
+	KQU(13372420669446163240), KQU( 6752564244716909224),
+	KQU( 7157333073400313737), KQU(12230281516370654308),
+	KQU( 1182884552219419117), KQU( 2955125381312499218),
+	KQU(10308827097079443249), KQU( 1337648572986534958),
+	KQU(16378788590020343939), KQU(  108619126514420935),
+	KQU( 3990981009621629188), KQU( 5460953070230946410),
+	KQU( 9703328329366531883), KQU(13166631489188077236),
+	KQU( 1104768831213675170), KQU( 3447930458553877908),
+	KQU( 8067172487769945676), KQU( 5445802098190775347),
+	KQU( 3244840981648973873), KQU(17314668322981950060),
+	KQU( 5006812527827763807), KQU(18158695070225526260),
+	KQU( 2824536478852417853), KQU(13974775809127519886),
+	KQU( 9814362769074067392), KQU(17276205156374862128),
+	KQU(11361680725379306967), KQU( 3422581970382012542),
+	KQU(11003189603753241266), KQU(11194292945277862261),
+	KQU( 6839623313908521348), KQU(11935326462707324634),
+	KQU( 1611456788685878444), KQU(13112620989475558907),
+	KQU(  517659108904450427), KQU(13558114318574407624),
+	KQU(15699089742731633077), KQU( 4988979278862685458),
+	KQU( 8111373583056521297), KQU( 3891258746615399627),
+	KQU( 8137298251469718086), KQU(12748663295624701649),
+	KQU( 4389835683495292062), KQU( 5775217872128831729),
+	KQU( 9462091896405534927), KQU( 8498124108820263989),
+	KQU( 8059131278842839525), KQU(10503167994254090892),
+	KQU(11613153541070396656), KQU(18069248738504647790),
+	KQU(  570657419109768508), KQU( 3950574167771159665),
+	KQU( 5514655599604313077), KQU( 2908460854428484165),
+	KQU(10777722615935663114), KQU(12007363304839279486),
+	KQU( 9800646187569484767), KQU( 8795423564889864287),
+	KQU(14257396680131028419), KQU( 6405465117315096498),
+	KQU( 7939411072208774878), KQU(17577572378528990006),
+	KQU(14785873806715994850), KQU(16770572680854747390),
+	KQU(18127549474419396481), KQU(11637013449455757750),
+	KQU(14371851933996761086), KQU( 3601181063650110280),
+	KQU( 4126442845019316144), KQU(10198287239244320669),
+	KQU(18000169628555379659), KQU(18392482400739978269),
+	KQU( 6219919037686919957), KQU( 3610085377719446052),
+	KQU( 2513925039981776336), KQU(16679413537926716955),
+	KQU(12903302131714909434), KQU( 5581145789762985009),
+	KQU(12325955044293303233), KQU(17216111180742141204),
+	KQU( 6321919595276545740), KQU( 3507521147216174501),
+	KQU( 9659194593319481840), KQU(11473976005975358326),
+	KQU(14742730101435987026), KQU(  492845897709954780),
+	KQU(16976371186162599676), KQU(17712703422837648655),
+	KQU( 9881254778587061697), KQU( 8413223156302299551),
+	KQU( 1563841828254089168), KQU( 9996032758786671975),
+	KQU(  138877700583772667), KQU(13003043368574995989),
+	KQU( 4390573668650456587), KQU( 8610287390568126755),
+	KQU(15126904974266642199), KQU( 6703637238986057662),
+	KQU( 2873075592956810157), KQU( 6035080933946049418),
+	KQU(13382846581202353014), KQU( 7303971031814642463),
+	KQU(18418024405307444267), KQU( 5847096731675404647),
+	KQU( 4035880699639842500), KQU(11525348625112218478),
+	KQU( 3041162365459574102), KQU( 2604734487727986558),
+	KQU(15526341771636983145), KQU(14556052310697370254),
+	KQU(12997787077930808155), KQU( 9601806501755554499),
+	KQU(11349677952521423389), KQU(14956777807644899350),
+	KQU(16559736957742852721), KQU(12360828274778140726),
+	KQU( 6685373272009662513), KQU(16932258748055324130),
+	KQU(15918051131954158508), KQU( 1692312913140790144),
+	KQU(  546653826801637367), KQU( 5341587076045986652),
+	KQU(14975057236342585662), KQU(12374976357340622412),
+	KQU(10328833995181940552), KQU(12831807101710443149),
+	KQU(10548514914382545716), KQU( 2217806727199715993),
+	KQU(12627067369242845138), KQU( 4598965364035438158),
+	KQU(  150923352751318171), KQU(14274109544442257283),
+	KQU( 4696661475093863031), KQU( 1505764114384654516),
+	KQU(10699185831891495147), KQU( 2392353847713620519),
+	KQU( 3652870166711788383), KQU( 8640653276221911108),
+	KQU( 3894077592275889704), KQU( 4918592872135964845),
+	KQU(16379121273281400789), KQU(12058465483591683656),
+	KQU(11250106829302924945), KQU( 1147537556296983005),
+	KQU( 6376342756004613268), KQU(14967128191709280506),
+	KQU(18007449949790627628), KQU( 9497178279316537841),
+	KQU( 7920174844809394893), KQU(10037752595255719907),
+	KQU(15875342784985217697), KQU(15311615921712850696),
+	KQU( 9552902652110992950), KQU(14054979450099721140),
+	KQU( 5998709773566417349), KQU(18027910339276320187),
+	KQU( 8223099053868585554), KQU( 7842270354824999767),
+	KQU( 4896315688770080292), KQU(12969320296569787895),
+	KQU( 2674321489185759961), KQU( 4053615936864718439),
+	KQU(11349775270588617578), KQU( 4743019256284553975),
+	KQU( 5602100217469723769), KQU(14398995691411527813),
+	KQU( 7412170493796825470), KQU(  836262406131744846),
+	KQU( 8231086633845153022), KQU( 5161377920438552287),
+	KQU( 8828731196169924949), KQU(16211142246465502680),
+	KQU( 3307990879253687818), KQU( 5193405406899782022),
+	KQU( 8510842117467566693), KQU( 6070955181022405365),
+	KQU(14482950231361409799), KQU(12585159371331138077),
+	KQU( 3511537678933588148), KQU( 2041849474531116417),
+	KQU(10944936685095345792), KQU(18303116923079107729),
+	KQU( 2720566371239725320), KQU( 4958672473562397622),
+	KQU( 3032326668253243412), KQU(13689418691726908338),
+	KQU( 1895205511728843996), KQU( 8146303515271990527),
+	KQU(16507343500056113480), KQU(  473996939105902919),
+	KQU( 9897686885246881481), KQU(14606433762712790575),
+	KQU( 6732796251605566368), KQU( 1399778120855368916),
+	KQU(  935023885182833777), KQU(16066282816186753477),
+	KQU( 7291270991820612055), KQU(17530230393129853844),
+	KQU(10223493623477451366), KQU(15841725630495676683),
+	KQU(17379567246435515824), KQU( 8588251429375561971),
+	KQU(18339511210887206423), KQU(17349587430725976100),
+	KQU(12244876521394838088), KQU( 6382187714147161259),
+	KQU(12335807181848950831), KQU(16948885622305460665),
+	KQU(13755097796371520506), KQU(14806740373324947801),
+	KQU( 4828699633859287703), KQU( 8209879281452301604),
+	KQU(12435716669553736437), KQU(13970976859588452131),
+	KQU( 6233960842566773148), KQU(12507096267900505759),
+	KQU( 1198713114381279421), KQU(14989862731124149015),
+	KQU(15932189508707978949), KQU( 2526406641432708722),
+	KQU(   29187427817271982), KQU( 1499802773054556353),
+	KQU(10816638187021897173), KQU( 5436139270839738132),
+	KQU( 6659882287036010082), KQU( 2154048955317173697),
+	KQU(10887317019333757642), KQU(16281091802634424955),
+	KQU(10754549879915384901), KQU(10760611745769249815),
+	KQU( 2161505946972504002), KQU( 5243132808986265107),
+	KQU(10129852179873415416), KQU(  710339480008649081),
+	KQU( 7802129453068808528), KQU(17967213567178907213),
+	KQU(15730859124668605599), KQU(13058356168962376502),
+	KQU( 3701224985413645909), KQU(14464065869149109264),
+	KQU( 9959272418844311646), KQU(10157426099515958752),
+	KQU(14013736814538268528), KQU(17797456992065653951),
+	KQU(17418878140257344806), KQU(15457429073540561521),
+	KQU( 2184426881360949378), KQU( 2062193041154712416),
+	KQU( 8553463347406931661), KQU( 4913057625202871854),
+	KQU( 2668943682126618425), KQU(17064444737891172288),
+	KQU( 4997115903913298637), KQU(12019402608892327416),
+	KQU(17603584559765897352), KQU(11367529582073647975),
+	KQU( 8211476043518436050), KQU( 8676849804070323674),
+	KQU(18431829230394475730), KQU(10490177861361247904),
+	KQU( 9508720602025651349), KQU( 7409627448555722700),
+	KQU( 5804047018862729008), KQU(11943858176893142594),
+	KQU(11908095418933847092), KQU( 5415449345715887652),
+	KQU( 1554022699166156407), KQU( 9073322106406017161),
+	KQU( 7080630967969047082), KQU(18049736940860732943),
+	KQU(12748714242594196794), KQU( 1226992415735156741),
+	KQU(17900981019609531193), KQU(11720739744008710999),
+	KQU( 3006400683394775434), KQU(11347974011751996028),
+	KQU( 3316999628257954608), KQU( 8384484563557639101),
+	KQU(18117794685961729767), KQU( 1900145025596618194),
+	KQU(17459527840632892676), KQU( 5634784101865710994),
+	KQU( 7918619300292897158), KQU( 3146577625026301350),
+	KQU( 9955212856499068767), KQU( 1873995843681746975),
+	KQU( 1561487759967972194), KQU( 8322718804375878474),
+	KQU(11300284215327028366), KQU( 4667391032508998982),
+	KQU( 9820104494306625580), KQU(17922397968599970610),
+	KQU( 1784690461886786712), KQU(14940365084341346821),
+	KQU( 5348719575594186181), KQU(10720419084507855261),
+	KQU(14210394354145143274), KQU( 2426468692164000131),
+	KQU(16271062114607059202), KQU(14851904092357070247),
+	KQU( 6524493015693121897), KQU( 9825473835127138531),
+	KQU(14222500616268569578), KQU(15521484052007487468),
+	KQU(14462579404124614699), KQU(11012375590820665520),
+	KQU(11625327350536084927), KQU(14452017765243785417),
+	KQU( 9989342263518766305), KQU( 3640105471101803790),
+	KQU( 4749866455897513242), KQU(13963064946736312044),
+	KQU(10007416591973223791), KQU(18314132234717431115),
+	KQU( 3286596588617483450), KQU( 7726163455370818765),
+	KQU( 7575454721115379328), KQU( 5308331576437663422),
+	KQU(18288821894903530934), KQU( 8028405805410554106),
+	KQU(15744019832103296628), KQU(  149765559630932100),
+	KQU( 6137705557200071977), KQU(14513416315434803615),
+	KQU(11665702820128984473), KQU(  218926670505601386),
+	KQU( 6868675028717769519), KQU(15282016569441512302),
+	KQU( 5707000497782960236), KQU( 6671120586555079567),
+	KQU( 2194098052618985448), KQU(16849577895477330978),
+	KQU(12957148471017466283), KQU( 1997805535404859393),
+	KQU( 1180721060263860490), KQU(13206391310193756958),
+	KQU(12980208674461861797), KQU( 3825967775058875366),
+	KQU(17543433670782042631), KQU( 1518339070120322730),
+	KQU(16344584340890991669), KQU( 2611327165318529819),
+	KQU(11265022723283422529), KQU( 4001552800373196817),
+	KQU(14509595890079346161), KQU( 3528717165416234562),
+	KQU(18153222571501914072), KQU( 9387182977209744425),
+	KQU(10064342315985580021), KQU(11373678413215253977),
+	KQU( 2308457853228798099), KQU( 9729042942839545302),
+	KQU( 7833785471140127746), KQU( 6351049900319844436),
+	KQU(14454610627133496067), KQU(12533175683634819111),
+	KQU(15570163926716513029), KQU(13356980519185762498)
+};
+
+TEST_BEGIN(test_gen_rand_32) {
+	uint32_t array32[BLOCK_SIZE] JEMALLOC_ATTR(aligned(16));
+	uint32_t array32_2[BLOCK_SIZE] JEMALLOC_ATTR(aligned(16));
+	int i;
+	uint32_t r32;
+	sfmt_t *ctx;
+
+	expect_d_le(get_min_array_size32(), BLOCK_SIZE,
+	    "Array size too small");
+	ctx = init_gen_rand(1234);
+	fill_array32(ctx, array32, BLOCK_SIZE);
+	fill_array32(ctx, array32_2, BLOCK_SIZE);
+	fini_gen_rand(ctx);
+
+	ctx = init_gen_rand(1234);
+	for (i = 0; i < BLOCK_SIZE; i++) {
+		if (i < COUNT_1) {
+			expect_u32_eq(array32[i], init_gen_rand_32_expected[i],
+			    "Output mismatch for i=%d", i);
+		}
+		r32 = gen_rand32(ctx);
+		expect_u32_eq(r32, array32[i],
+		    "Mismatch at array32[%d]=%x, gen=%x", i, array32[i], r32);
+	}
+	for (i = 0; i < COUNT_2; i++) {
+		r32 = gen_rand32(ctx);
+		expect_u32_eq(r32, array32_2[i],
+		    "Mismatch at array32_2[%d]=%x, gen=%x", i, array32_2[i],
+		    r32);
+	}
+	fini_gen_rand(ctx);
+}
+TEST_END
+
+TEST_BEGIN(test_by_array_32) {
+	uint32_t array32[BLOCK_SIZE] JEMALLOC_ATTR(aligned(16));
+	uint32_t array32_2[BLOCK_SIZE] JEMALLOC_ATTR(aligned(16));
+	int i;
+	uint32_t ini[4] = {0x1234, 0x5678, 0x9abc, 0xdef0};
+	uint32_t r32;
+	sfmt_t *ctx;
+
+	expect_d_le(get_min_array_size32(), BLOCK_SIZE,
+	    "Array size too small");
+	ctx = init_by_array(ini, 4);
+	fill_array32(ctx, array32, BLOCK_SIZE);
+	fill_array32(ctx, array32_2, BLOCK_SIZE);
+	fini_gen_rand(ctx);
+
+	ctx = init_by_array(ini, 4);
+	for (i = 0; i < BLOCK_SIZE; i++) {
+		if (i < COUNT_1) {
+			expect_u32_eq(array32[i], init_by_array_32_expected[i],
+			    "Output mismatch for i=%d", i);
+		}
+		r32 = gen_rand32(ctx);
+		expect_u32_eq(r32, array32[i],
+		    "Mismatch at array32[%d]=%x, gen=%x", i, array32[i], r32);
+	}
+	for (i = 0; i < COUNT_2; i++) {
+		r32 = gen_rand32(ctx);
+		expect_u32_eq(r32, array32_2[i],
+		    "Mismatch at array32_2[%d]=%x, gen=%x", i, array32_2[i],
+		    r32);
+	}
+	fini_gen_rand(ctx);
+}
+TEST_END
+
+TEST_BEGIN(test_gen_rand_64) {
+	uint64_t array64[BLOCK_SIZE64] JEMALLOC_ATTR(aligned(16));
+	uint64_t array64_2[BLOCK_SIZE64] JEMALLOC_ATTR(aligned(16));
+	int i;
+	uint64_t r;
+	sfmt_t *ctx;
+
+	expect_d_le(get_min_array_size64(), BLOCK_SIZE64,
+	    "Array size too small");
+	ctx = init_gen_rand(4321);
+	fill_array64(ctx, array64, BLOCK_SIZE64);
+	fill_array64(ctx, array64_2, BLOCK_SIZE64);
+	fini_gen_rand(ctx);
+
+	ctx = init_gen_rand(4321);
+	for (i = 0; i < BLOCK_SIZE64; i++) {
+		if (i < COUNT_1) {
+			expect_u64_eq(array64[i], init_gen_rand_64_expected[i],
+			    "Output mismatch for i=%d", i);
+		}
+		r = gen_rand64(ctx);
+		expect_u64_eq(r, array64[i],
+		    "Mismatch at array64[%d]=%"FMTx64", gen=%"FMTx64, i,
+		    array64[i], r);
+	}
+	for (i = 0; i < COUNT_2; i++) {
+		r = gen_rand64(ctx);
+		expect_u64_eq(r, array64_2[i],
+		    "Mismatch at array64_2[%d]=%"FMTx64" gen=%"FMTx64"", i,
+		    array64_2[i], r);
+	}
+	fini_gen_rand(ctx);
+}
+TEST_END
+
+TEST_BEGIN(test_by_array_64) {
+	uint64_t array64[BLOCK_SIZE64] JEMALLOC_ATTR(aligned(16));
+	uint64_t array64_2[BLOCK_SIZE64] JEMALLOC_ATTR(aligned(16));
+	int i;
+	uint64_t r;
+	uint32_t ini[] = {5, 4, 3, 2, 1};
+	sfmt_t *ctx;
+
+	expect_d_le(get_min_array_size64(), BLOCK_SIZE64,
+	    "Array size too small");
+	ctx = init_by_array(ini, 5);
+	fill_array64(ctx, array64, BLOCK_SIZE64);
+	fill_array64(ctx, array64_2, BLOCK_SIZE64);
+	fini_gen_rand(ctx);
+
+	ctx = init_by_array(ini, 5);
+	for (i = 0; i < BLOCK_SIZE64; i++) {
+		if (i < COUNT_1) {
+			expect_u64_eq(array64[i], init_by_array_64_expected[i],
+			    "Output mismatch for i=%d", i);
+		}
+		r = gen_rand64(ctx);
+		expect_u64_eq(r, array64[i],
+		    "Mismatch at array64[%d]=%"FMTx64" gen=%"FMTx64, i,
+		    array64[i], r);
+	}
+	for (i = 0; i < COUNT_2; i++) {
+		r = gen_rand64(ctx);
+		expect_u64_eq(r, array64_2[i],
+		    "Mismatch at array64_2[%d]=%"FMTx64" gen=%"FMTx64, i,
+		    array64_2[i], r);
+	}
+	fini_gen_rand(ctx);
+}
+TEST_END
+
+int
+main(void) {
+	return test(
+	    test_gen_rand_32,
+	    test_by_array_32,
+	    test_gen_rand_64,
+	    test_by_array_64);
+}
diff --git a/deps/jemalloc/test/unit/a0.c b/deps/jemalloc/test/unit/a0.c
new file mode 100644
index 0000000..c1be79a
--- /dev/null
+++ b/deps/jemalloc/test/unit/a0.c
@@ -0,0 +1,16 @@
+#include "test/jemalloc_test.h"
+
+TEST_BEGIN(test_a0) {
+	void *p;
+
+	p = a0malloc(1);
+	expect_ptr_not_null(p, "Unexpected a0malloc() error");
+	a0dalloc(p);
+}
+TEST_END
+
+int
+main(void) {
+	return test_no_malloc_init(
+	    test_a0);
+}
diff --git a/deps/jemalloc/test/unit/arena_decay.c b/deps/jemalloc/test/unit/arena_decay.c
new file mode 100644
index 0000000..e991f4d
--- /dev/null
+++ b/deps/jemalloc/test/unit/arena_decay.c
@@ -0,0 +1,436 @@
+#include "test/jemalloc_test.h"
+#include "test/arena_util.h"
+
+#include "jemalloc/internal/ticker.h"
+
+static nstime_monotonic_t *nstime_monotonic_orig;
+static nstime_update_t *nstime_update_orig;
+
+static unsigned nupdates_mock;
+static nstime_t time_mock;
+static bool monotonic_mock;
+
+static bool
+nstime_monotonic_mock(void) {
+	return monotonic_mock;
+}
+
+static void
+nstime_update_mock(nstime_t *time) {
+	nupdates_mock++;
+	if (monotonic_mock) {
+		nstime_copy(time, &time_mock);
+	}
+}
+
+TEST_BEGIN(test_decay_ticks) {
+	test_skip_if(is_background_thread_enabled());
+	test_skip_if(opt_hpa);
+
+	ticker_geom_t *decay_ticker;
+	unsigned tick0, tick1, arena_ind;
+	size_t sz, large0;
+	void *p;
+
+	sz = sizeof(size_t);
+	expect_d_eq(mallctl("arenas.lextent.0.size", (void *)&large0, &sz, NULL,
+	    0), 0, "Unexpected mallctl failure");
+
+	/* Set up a manually managed arena for test. */
+	arena_ind = do_arena_create(0, 0);
+
+	/* Migrate to the new arena, and get the ticker. */
+	unsigned old_arena_ind;
+	size_t sz_arena_ind = sizeof(old_arena_ind);
+	expect_d_eq(mallctl("thread.arena", (void *)&old_arena_ind,
+	    &sz_arena_ind, (void *)&arena_ind, sizeof(arena_ind)), 0,
+	    "Unexpected mallctl() failure");
+	decay_ticker = tsd_arena_decay_tickerp_get(tsd_fetch());
+	expect_ptr_not_null(decay_ticker,
+	    "Unexpected failure getting decay ticker");
+
+	/*
+	 * Test the standard APIs using a large size class, since we can't
+	 * control tcache interactions for small size classes (except by
+	 * completely disabling tcache for the entire test program).
+	 */
+
+	/* malloc(). */
+	tick0 = ticker_geom_read(decay_ticker);
+	p = malloc(large0);
+	expect_ptr_not_null(p, "Unexpected malloc() failure");
+	tick1 = ticker_geom_read(decay_ticker);
+	expect_u32_ne(tick1, tick0, "Expected ticker to tick during malloc()");
+	/* free(). */
+	tick0 = ticker_geom_read(decay_ticker);
+	free(p);
+	tick1 = ticker_geom_read(decay_ticker);
+	expect_u32_ne(tick1, tick0, "Expected ticker to tick during free()");
+
+	/* calloc(). */
+	tick0 = ticker_geom_read(decay_ticker);
+	p = calloc(1, large0);
+	expect_ptr_not_null(p, "Unexpected calloc() failure");
+	tick1 = ticker_geom_read(decay_ticker);
+	expect_u32_ne(tick1, tick0, "Expected ticker to tick during calloc()");
+	free(p);
+
+	/* posix_memalign(). */
+	tick0 = ticker_geom_read(decay_ticker);
+	expect_d_eq(posix_memalign(&p, sizeof(size_t), large0), 0,
+	    "Unexpected posix_memalign() failure");
+	tick1 = ticker_geom_read(decay_ticker);
+	expect_u32_ne(tick1, tick0,
+	    "Expected ticker to tick during posix_memalign()");
+	free(p);
+
+	/* aligned_alloc(). */
+	tick0 = ticker_geom_read(decay_ticker);
+	p = aligned_alloc(sizeof(size_t), large0);
+	expect_ptr_not_null(p, "Unexpected aligned_alloc() failure");
+	tick1 = ticker_geom_read(decay_ticker);
+	expect_u32_ne(tick1, tick0,
+	    "Expected ticker to tick during aligned_alloc()");
+	free(p);
+
+	/* realloc(). */
+	/* Allocate. */
+	tick0 = ticker_geom_read(decay_ticker);
+	p = realloc(NULL, large0);
+	expect_ptr_not_null(p, "Unexpected realloc() failure");
+	tick1 = ticker_geom_read(decay_ticker);
+	expect_u32_ne(tick1, tick0, "Expected ticker to tick during realloc()");
+	/* Reallocate. */
+	tick0 = ticker_geom_read(decay_ticker);
+	p = realloc(p, large0);
+	expect_ptr_not_null(p, "Unexpected realloc() failure");
+	tick1 = ticker_geom_read(decay_ticker);
+	expect_u32_ne(tick1, tick0, "Expected ticker to tick during realloc()");
+	/* Deallocate. */
+	tick0 = ticker_geom_read(decay_ticker);
+	realloc(p, 0);
+	tick1 = ticker_geom_read(decay_ticker);
+	expect_u32_ne(tick1, tick0, "Expected ticker to tick during realloc()");
+
+	/*
+	 * Test the *allocx() APIs using large and small size classes, with
+	 * tcache explicitly disabled.
+	 */
+	{
+		unsigned i;
+		size_t allocx_sizes[2];
+		allocx_sizes[0] = large0;
+		allocx_sizes[1] = 1;
+
+		for (i = 0; i < sizeof(allocx_sizes) / sizeof(size_t); i++) {
+			sz = allocx_sizes[i];
+
+			/* mallocx(). */
+			tick0 = ticker_geom_read(decay_ticker);
+			p = mallocx(sz, MALLOCX_TCACHE_NONE);
+			expect_ptr_not_null(p, "Unexpected mallocx() failure");
+			tick1 = ticker_geom_read(decay_ticker);
+			expect_u32_ne(tick1, tick0,
+			    "Expected ticker to tick during mallocx() (sz=%zu)",
+			    sz);
+			/* rallocx(). */
+			tick0 = ticker_geom_read(decay_ticker);
+			p = rallocx(p, sz, MALLOCX_TCACHE_NONE);
+			expect_ptr_not_null(p, "Unexpected rallocx() failure");
+			tick1 = ticker_geom_read(decay_ticker);
+			expect_u32_ne(tick1, tick0,
+			    "Expected ticker to tick during rallocx() (sz=%zu)",
+			    sz);
+			/* xallocx(). */
+			tick0 = ticker_geom_read(decay_ticker);
+			xallocx(p, sz, 0, MALLOCX_TCACHE_NONE);
+			tick1 = ticker_geom_read(decay_ticker);
+			expect_u32_ne(tick1, tick0,
+			    "Expected ticker to tick during xallocx() (sz=%zu)",
+			    sz);
+			/* dallocx(). */
+			tick0 = ticker_geom_read(decay_ticker);
+			dallocx(p, MALLOCX_TCACHE_NONE);
+			tick1 = ticker_geom_read(decay_ticker);
+			expect_u32_ne(tick1, tick0,
+			    "Expected ticker to tick during dallocx() (sz=%zu)",
+			    sz);
+			/* sdallocx(). */
+			p = mallocx(sz, MALLOCX_TCACHE_NONE);
+			expect_ptr_not_null(p, "Unexpected mallocx() failure");
+			tick0 = ticker_geom_read(decay_ticker);
+			sdallocx(p, sz, MALLOCX_TCACHE_NONE);
+			tick1 = ticker_geom_read(decay_ticker);
+			expect_u32_ne(tick1, tick0,
+			    "Expected ticker to tick during sdallocx() "
+			    "(sz=%zu)", sz);
+		}
+	}
+
+	/*
+	 * Test tcache fill/flush interactions for large and small size classes,
+	 * using an explicit tcache.
+	 */
+	unsigned tcache_ind, i;
+	size_t tcache_sizes[2];
+	tcache_sizes[0] = large0;
+	tcache_sizes[1] = 1;
+
+	size_t tcache_max, sz_tcache_max;
+	sz_tcache_max = sizeof(tcache_max);
+	expect_d_eq(mallctl("arenas.tcache_max", (void *)&tcache_max,
+	    &sz_tcache_max, NULL, 0), 0, "Unexpected mallctl() failure");
+
+	sz = sizeof(unsigned);
+	expect_d_eq(mallctl("tcache.create", (void *)&tcache_ind, &sz,
+	    NULL, 0), 0, "Unexpected mallctl failure");
+
+	for (i = 0; i < sizeof(tcache_sizes) / sizeof(size_t); i++) {
+		sz = tcache_sizes[i];
+
+		/* tcache fill. */
+		tick0 = ticker_geom_read(decay_ticker);
+		p = mallocx(sz, MALLOCX_TCACHE(tcache_ind));
+		expect_ptr_not_null(p, "Unexpected mallocx() failure");
+		tick1 = ticker_geom_read(decay_ticker);
+		expect_u32_ne(tick1, tick0,
+		    "Expected ticker to tick during tcache fill "
+		    "(sz=%zu)", sz);
+		/* tcache flush. */
+		dallocx(p, MALLOCX_TCACHE(tcache_ind));
+		tick0 = ticker_geom_read(decay_ticker);
+		expect_d_eq(mallctl("tcache.flush", NULL, NULL,
+		    (void *)&tcache_ind, sizeof(unsigned)), 0,
+		    "Unexpected mallctl failure");
+		tick1 = ticker_geom_read(decay_ticker);
+
+		/* Will only tick if it's in tcache. */
+		expect_u32_ne(tick1, tick0,
+		    "Expected ticker to tick during tcache flush (sz=%zu)", sz);
+	}
+}
+TEST_END
+
+static void
+decay_ticker_helper(unsigned arena_ind, int flags, bool dirty, ssize_t dt,
+    uint64_t dirty_npurge0, uint64_t muzzy_npurge0, bool terminate_asap) {
+#define NINTERVALS 101
+	nstime_t time, update_interval, decay_ms, deadline;
+
+	nstime_init_update(&time);
+
+	nstime_init2(&decay_ms, dt, 0);
+	nstime_copy(&deadline, &time);
+	nstime_add(&deadline, &decay_ms);
+
+	nstime_init2(&update_interval, dt, 0);
+	nstime_idivide(&update_interval, NINTERVALS);
+
+	/*
+	 * Keep q's slab from being deallocated during the looping below.  If a
+	 * cached slab were to repeatedly come and go during looping, it could
+	 * prevent the decay backlog ever becoming empty.
+	 */
+	void *p = do_mallocx(1, flags);
+	uint64_t dirty_npurge1, muzzy_npurge1;
+	do {
+		for (unsigned i = 0; i < ARENA_DECAY_NTICKS_PER_UPDATE / 2;
+		    i++) {
+			void *q = do_mallocx(1, flags);
+			dallocx(q, flags);
+		}
+		dirty_npurge1 = get_arena_dirty_npurge(arena_ind);
+		muzzy_npurge1 = get_arena_muzzy_npurge(arena_ind);
+
+		nstime_add(&time_mock, &update_interval);
+		nstime_update(&time);
+	} while (nstime_compare(&time, &deadline) <= 0 && ((dirty_npurge1 ==
+	    dirty_npurge0 && muzzy_npurge1 == muzzy_npurge0) ||
+	    !terminate_asap));
+	dallocx(p, flags);
+
+	if (config_stats) {
+		expect_u64_gt(dirty_npurge1 + muzzy_npurge1, dirty_npurge0 +
+		    muzzy_npurge0, "Expected purging to occur");
+	}
+#undef NINTERVALS
+}
+
+TEST_BEGIN(test_decay_ticker) {
+	test_skip_if(is_background_thread_enabled());
+	test_skip_if(opt_hpa);
+#define NPS 2048
+	ssize_t ddt = opt_dirty_decay_ms;
+	ssize_t mdt = opt_muzzy_decay_ms;
+	unsigned arena_ind = do_arena_create(ddt, mdt);
+	int flags = (MALLOCX_ARENA(arena_ind) | MALLOCX_TCACHE_NONE);
+	void *ps[NPS];
+
+	/*
+	 * Allocate a bunch of large objects, pause the clock, deallocate every
+	 * other object (to fragment virtual memory), restore the clock, then
+	 * [md]allocx() in a tight loop while advancing time rapidly to verify
+	 * the ticker triggers purging.
+	 */
+	size_t large;
+	size_t sz = sizeof(size_t);
+	expect_d_eq(mallctl("arenas.lextent.0.size", (void *)&large, &sz, NULL,
+	    0), 0, "Unexpected mallctl failure");
+
+	do_purge(arena_ind);
+	uint64_t dirty_npurge0 = get_arena_dirty_npurge(arena_ind);
+	uint64_t muzzy_npurge0 = get_arena_muzzy_npurge(arena_ind);
+
+	for (unsigned i = 0; i < NPS; i++) {
+		ps[i] = do_mallocx(large, flags);
+	}
+
+	nupdates_mock = 0;
+	nstime_init_update(&time_mock);
+	monotonic_mock = true;
+
+	nstime_monotonic_orig = nstime_monotonic;
+	nstime_update_orig = nstime_update;
+	nstime_monotonic = nstime_monotonic_mock;
+	nstime_update = nstime_update_mock;
+
+	for (unsigned i = 0; i < NPS; i += 2) {
+		dallocx(ps[i], flags);
+		unsigned nupdates0 = nupdates_mock;
+		do_decay(arena_ind);
+		expect_u_gt(nupdates_mock, nupdates0,
+		    "Expected nstime_update() to be called");
+	}
+
+	decay_ticker_helper(arena_ind, flags, true, ddt, dirty_npurge0,
+	    muzzy_npurge0, true);
+	decay_ticker_helper(arena_ind, flags, false, ddt+mdt, dirty_npurge0,
+	    muzzy_npurge0, false);
+
+	do_arena_destroy(arena_ind);
+
+	nstime_monotonic = nstime_monotonic_orig;
+	nstime_update = nstime_update_orig;
+#undef NPS
+}
+TEST_END
+
+TEST_BEGIN(test_decay_nonmonotonic) {
+	test_skip_if(is_background_thread_enabled());
+	test_skip_if(opt_hpa);
+#define NPS (SMOOTHSTEP_NSTEPS + 1)
+	int flags = (MALLOCX_ARENA(0) | MALLOCX_TCACHE_NONE);
+	void *ps[NPS];
+	uint64_t npurge0 = 0;
+	uint64_t npurge1 = 0;
+	size_t sz, large0;
+	unsigned i, nupdates0;
+
+	sz = sizeof(size_t);
+	expect_d_eq(mallctl("arenas.lextent.0.size", (void *)&large0, &sz, NULL,
+	    0), 0, "Unexpected mallctl failure");
+
+	expect_d_eq(mallctl("arena.0.purge", NULL, NULL, NULL, 0), 0,
+	    "Unexpected mallctl failure");
+	do_epoch();
+	sz = sizeof(uint64_t);
+	npurge0 = get_arena_npurge(0);
+
+	nupdates_mock = 0;
+	nstime_init_update(&time_mock);
+	monotonic_mock = false;
+
+	nstime_monotonic_orig = nstime_monotonic;
+	nstime_update_orig = nstime_update;
+	nstime_monotonic = nstime_monotonic_mock;
+	nstime_update = nstime_update_mock;
+
+	for (i = 0; i < NPS; i++) {
+		ps[i] = mallocx(large0, flags);
+		expect_ptr_not_null(ps[i], "Unexpected mallocx() failure");
+	}
+
+	for (i = 0; i < NPS; i++) {
+		dallocx(ps[i], flags);
+		nupdates0 = nupdates_mock;
+		expect_d_eq(mallctl("arena.0.decay", NULL, NULL, NULL, 0), 0,
+		    "Unexpected arena.0.decay failure");
+		expect_u_gt(nupdates_mock, nupdates0,
+		    "Expected nstime_update() to be called");
+	}
+
+	do_epoch();
+	sz = sizeof(uint64_t);
+	npurge1 = get_arena_npurge(0);
+
+	if (config_stats) {
+		expect_u64_eq(npurge0, npurge1, "Unexpected purging occurred");
+	}
+
+	nstime_monotonic = nstime_monotonic_orig;
+	nstime_update = nstime_update_orig;
+#undef NPS
+}
+TEST_END
+
+TEST_BEGIN(test_decay_now) {
+	test_skip_if(is_background_thread_enabled());
+	test_skip_if(opt_hpa);
+
+	unsigned arena_ind = do_arena_create(0, 0);
+	expect_zu_eq(get_arena_pdirty(arena_ind), 0, "Unexpected dirty pages");
+	expect_zu_eq(get_arena_pmuzzy(arena_ind), 0, "Unexpected muzzy pages");
+	size_t sizes[] = {16, PAGE<<2, HUGEPAGE<<2};
+	/* Verify that dirty/muzzy pages never linger after deallocation. */
+	for (unsigned i = 0; i < sizeof(sizes)/sizeof(size_t); i++) {
+		size_t size = sizes[i];
+		generate_dirty(arena_ind, size);
+		expect_zu_eq(get_arena_pdirty(arena_ind), 0,
+		    "Unexpected dirty pages");
+		expect_zu_eq(get_arena_pmuzzy(arena_ind), 0,
+		    "Unexpected muzzy pages");
+	}
+	do_arena_destroy(arena_ind);
+}
+TEST_END
+
+TEST_BEGIN(test_decay_never) {
+	test_skip_if(is_background_thread_enabled() || !config_stats);
+	test_skip_if(opt_hpa);
+
+	unsigned arena_ind = do_arena_create(-1, -1);
+	int flags = MALLOCX_ARENA(arena_ind) | MALLOCX_TCACHE_NONE;
+	expect_zu_eq(get_arena_pdirty(arena_ind), 0, "Unexpected dirty pages");
+	expect_zu_eq(get_arena_pmuzzy(arena_ind), 0, "Unexpected muzzy pages");
+	size_t sizes[] = {16, PAGE<<2, HUGEPAGE<<2};
+	void *ptrs[sizeof(sizes)/sizeof(size_t)];
+	for (unsigned i = 0; i < sizeof(sizes)/sizeof(size_t); i++) {
+		ptrs[i] = do_mallocx(sizes[i], flags);
+	}
+	/* Verify that each deallocation generates additional dirty pages. */
+	size_t pdirty_prev = get_arena_pdirty(arena_ind);
+	size_t pmuzzy_prev = get_arena_pmuzzy(arena_ind);
+	expect_zu_eq(pdirty_prev, 0, "Unexpected dirty pages");
+	expect_zu_eq(pmuzzy_prev, 0, "Unexpected muzzy pages");
+	for (unsigned i = 0; i < sizeof(sizes)/sizeof(size_t); i++) {
+		dallocx(ptrs[i], flags);
+		size_t pdirty = get_arena_pdirty(arena_ind);
+		size_t pmuzzy = get_arena_pmuzzy(arena_ind);
+		expect_zu_gt(pdirty + (size_t)get_arena_dirty_purged(arena_ind),
+		    pdirty_prev, "Expected dirty pages to increase.");
+		expect_zu_eq(pmuzzy, 0, "Unexpected muzzy pages");
+		pdirty_prev = pdirty;
+	}
+	do_arena_destroy(arena_ind);
+}
+TEST_END
+
+int
+main(void) {
+	return test(
+	    test_decay_ticks,
+	    test_decay_ticker,
+	    test_decay_nonmonotonic,
+	    test_decay_now,
+	    test_decay_never);
+}
diff --git a/deps/jemalloc/test/unit/arena_decay.sh b/deps/jemalloc/test/unit/arena_decay.sh
new file mode 100644
index 0000000..52f1b20
--- /dev/null
+++ b/deps/jemalloc/test/unit/arena_decay.sh
@@ -0,0 +1,3 @@
+#!/bin/sh
+
+export MALLOC_CONF="dirty_decay_ms:1000,muzzy_decay_ms:1000,tcache_max:1024"
diff --git a/deps/jemalloc/test/unit/arena_reset.c b/deps/jemalloc/test/unit/arena_reset.c
new file mode 100644
index 0000000..8ef0786
--- /dev/null
+++ b/deps/jemalloc/test/unit/arena_reset.c
@@ -0,0 +1,361 @@
+#ifndef ARENA_RESET_PROF_C_
+#include "test/jemalloc_test.h"
+#endif
+
+#include "jemalloc/internal/extent_mmap.h"
+#include "jemalloc/internal/rtree.h"
+
+#include "test/extent_hooks.h"
+
+static unsigned
+get_nsizes_impl(const char *cmd) {
+	unsigned ret;
+	size_t z;
+
+	z = sizeof(unsigned);
+	expect_d_eq(mallctl(cmd, (void *)&ret, &z, NULL, 0), 0,
+	    "Unexpected mallctl(\"%s\", ...) failure", cmd);
+
+	return ret;
+}
+
+static unsigned
+get_nsmall(void) {
+	return get_nsizes_impl("arenas.nbins");
+}
+
+static unsigned
+get_nlarge(void) {
+	return get_nsizes_impl("arenas.nlextents");
+}
+
+static size_t
+get_size_impl(const char *cmd, size_t ind) {
+	size_t ret;
+	size_t z;
+	size_t mib[4];
+	size_t miblen = 4;
+
+	z = sizeof(size_t);
+	expect_d_eq(mallctlnametomib(cmd, mib, &miblen),
+	    0, "Unexpected mallctlnametomib(\"%s\", ...) failure", cmd);
+	mib[2] = ind;
+	z = sizeof(size_t);
+	expect_d_eq(mallctlbymib(mib, miblen, (void *)&ret, &z, NULL, 0),
+	    0, "Unexpected mallctlbymib([\"%s\", %zu], ...) failure", cmd, ind);
+
+	return ret;
+}
+
+static size_t
+get_small_size(size_t ind) {
+	return get_size_impl("arenas.bin.0.size", ind);
+}
+
+static size_t
+get_large_size(size_t ind) {
+	return get_size_impl("arenas.lextent.0.size", ind);
+}
+
+/* Like ivsalloc(), but safe to call on discarded allocations. */
+static size_t
+vsalloc(tsdn_t *tsdn, const void *ptr) {
+	emap_full_alloc_ctx_t full_alloc_ctx;
+	bool missing = emap_full_alloc_ctx_try_lookup(tsdn, &arena_emap_global,
+	    ptr, &full_alloc_ctx);
+	if (missing) {
+		return 0;
+	}
+
+	if (full_alloc_ctx.edata == NULL) {
+		return 0;
+	}
+	if (edata_state_get(full_alloc_ctx.edata) != extent_state_active) {
+		return 0;
+	}
+
+	if (full_alloc_ctx.szind == SC_NSIZES) {
+		return 0;
+	}
+
+	return sz_index2size(full_alloc_ctx.szind);
+}
+
+static unsigned
+do_arena_create(extent_hooks_t *h) {
+	unsigned arena_ind;
+	size_t sz = sizeof(unsigned);
+	expect_d_eq(mallctl("arenas.create", (void *)&arena_ind, &sz,
+	    (void *)(h != NULL ? &h : NULL), (h != NULL ? sizeof(h) : 0)), 0,
+	    "Unexpected mallctl() failure");
+	return arena_ind;
+}
+
+static void
+do_arena_reset_pre(unsigned arena_ind, void ***ptrs, unsigned *nptrs) {
+#define NLARGE	32
+	unsigned nsmall, nlarge, i;
+	size_t sz;
+	int flags;
+	tsdn_t *tsdn;
+
+	flags = MALLOCX_ARENA(arena_ind) | MALLOCX_TCACHE_NONE;
+
+	nsmall = get_nsmall();
+	nlarge = get_nlarge() > NLARGE ? NLARGE : get_nlarge();
+	*nptrs = nsmall + nlarge;
+	*ptrs = (void **)malloc(*nptrs * sizeof(void *));
+	expect_ptr_not_null(*ptrs, "Unexpected malloc() failure");
+
+	/* Allocate objects with a wide range of sizes. */
+	for (i = 0; i < nsmall; i++) {
+		sz = get_small_size(i);
+		(*ptrs)[i] = mallocx(sz, flags);
+		expect_ptr_not_null((*ptrs)[i],
+		    "Unexpected mallocx(%zu, %#x) failure", sz, flags);
+	}
+	for (i = 0; i < nlarge; i++) {
+		sz = get_large_size(i);
+		(*ptrs)[nsmall + i] = mallocx(sz, flags);
+		expect_ptr_not_null((*ptrs)[i],
+		    "Unexpected mallocx(%zu, %#x) failure", sz, flags);
+	}
+
+	tsdn = tsdn_fetch();
+
+	/* Verify allocations. */
+	for (i = 0; i < *nptrs; i++) {
+		expect_zu_gt(ivsalloc(tsdn, (*ptrs)[i]), 0,
+		    "Allocation should have queryable size");
+	}
+}
+
+static void
+do_arena_reset_post(void **ptrs, unsigned nptrs, unsigned arena_ind) {
+	tsdn_t *tsdn;
+	unsigned i;
+
+	tsdn = tsdn_fetch();
+
+	if (have_background_thread) {
+		malloc_mutex_lock(tsdn,
+		    &background_thread_info_get(arena_ind)->mtx);
+	}
+	/* Verify allocations no longer exist. */
+	for (i = 0; i < nptrs; i++) {
+		expect_zu_eq(vsalloc(tsdn, ptrs[i]), 0,
+		    "Allocation should no longer exist");
+	}
+	if (have_background_thread) {
+		malloc_mutex_unlock(tsdn,
+		    &background_thread_info_get(arena_ind)->mtx);
+	}
+
+	free(ptrs);
+}
+
+static void
+do_arena_reset_destroy(const char *name, unsigned arena_ind) {
+	size_t mib[3];
+	size_t miblen;
+
+	miblen = sizeof(mib)/sizeof(size_t);
+	expect_d_eq(mallctlnametomib(name, mib, &miblen), 0,
+	    "Unexpected mallctlnametomib() failure");
+	mib[1] = (size_t)arena_ind;
+	expect_d_eq(mallctlbymib(mib, miblen, NULL, NULL, NULL, 0), 0,
+	    "Unexpected mallctlbymib() failure");
+}
+
+static void
+do_arena_reset(unsigned arena_ind) {
+	do_arena_reset_destroy("arena.0.reset", arena_ind);
+}
+
+static void
+do_arena_destroy(unsigned arena_ind) {
+	do_arena_reset_destroy("arena.0.destroy", arena_ind);
+}
+
+TEST_BEGIN(test_arena_reset) {
+	unsigned arena_ind;
+	void **ptrs;
+	unsigned nptrs;
+
+	arena_ind = do_arena_create(NULL);
+	do_arena_reset_pre(arena_ind, &ptrs, &nptrs);
+	do_arena_reset(arena_ind);
+	do_arena_reset_post(ptrs, nptrs, arena_ind);
+}
+TEST_END
+
+static bool
+arena_i_initialized(unsigned arena_ind, bool refresh) {
+	bool initialized;
+	size_t mib[3];
+	size_t miblen, sz;
+
+	if (refresh) {
+		uint64_t epoch = 1;
+		expect_d_eq(mallctl("epoch", NULL, NULL, (void *)&epoch,
+		    sizeof(epoch)), 0, "Unexpected mallctl() failure");
+	}
+
+	miblen = sizeof(mib)/sizeof(size_t);
+	expect_d_eq(mallctlnametomib("arena.0.initialized", mib, &miblen), 0,
+	    "Unexpected mallctlnametomib() failure");
+	mib[1] = (size_t)arena_ind;
+	sz = sizeof(initialized);
+	expect_d_eq(mallctlbymib(mib, miblen, (void *)&initialized, &sz, NULL,
+	    0), 0, "Unexpected mallctlbymib() failure");
+
+	return initialized;
+}
+
+TEST_BEGIN(test_arena_destroy_initial) {
+	expect_false(arena_i_initialized(MALLCTL_ARENAS_DESTROYED, false),
+	    "Destroyed arena stats should not be initialized");
+}
+TEST_END
+
+TEST_BEGIN(test_arena_destroy_hooks_default) {
+	unsigned arena_ind, arena_ind_another, arena_ind_prev;
+	void **ptrs;
+	unsigned nptrs;
+
+	arena_ind = do_arena_create(NULL);
+	do_arena_reset_pre(arena_ind, &ptrs, &nptrs);
+
+	expect_false(arena_i_initialized(arena_ind, false),
+	    "Arena stats should not be initialized");
+	expect_true(arena_i_initialized(arena_ind, true),
+	    "Arena stats should be initialized");
+
+	/*
+	 * Create another arena before destroying one, to better verify arena
+	 * index reuse.
+	 */
+	arena_ind_another = do_arena_create(NULL);
+
+	do_arena_destroy(arena_ind);
+
+	expect_false(arena_i_initialized(arena_ind, true),
+	    "Arena stats should not be initialized");
+	expect_true(arena_i_initialized(MALLCTL_ARENAS_DESTROYED, false),
+	    "Destroyed arena stats should be initialized");
+
+	do_arena_reset_post(ptrs, nptrs, arena_ind);
+
+	arena_ind_prev = arena_ind;
+	arena_ind = do_arena_create(NULL);
+	do_arena_reset_pre(arena_ind, &ptrs, &nptrs);
+	expect_u_eq(arena_ind, arena_ind_prev,
+	    "Arena index should have been recycled");
+	do_arena_destroy(arena_ind);
+	do_arena_reset_post(ptrs, nptrs, arena_ind);
+
+	do_arena_destroy(arena_ind_another);
+
+	/* Try arena.create with custom hooks. */
+	size_t sz = sizeof(extent_hooks_t *);
+	extent_hooks_t *a0_default_hooks;
+	expect_d_eq(mallctl("arena.0.extent_hooks", (void *)&a0_default_hooks,
+	    &sz, NULL, 0), 0, "Unexpected mallctlnametomib() failure");
+
+	/* Default impl; but wrapped as "customized". */
+	extent_hooks_t new_hooks = *a0_default_hooks;
+	extent_hooks_t *hook = &new_hooks;
+	sz = sizeof(unsigned);
+	expect_d_eq(mallctl("arenas.create", (void *)&arena_ind, &sz,
+	    (void *)&hook, sizeof(void *)), 0,
+	    "Unexpected mallctl() failure");
+	do_arena_destroy(arena_ind);
+}
+TEST_END
+
+/*
+ * Actually unmap extents, regardless of opt_retain, so that attempts to access
+ * a destroyed arena's memory will segfault.
+ */
+static bool
+extent_dalloc_unmap(extent_hooks_t *extent_hooks, void *addr, size_t size,
+    bool committed, unsigned arena_ind) {
+	TRACE_HOOK("%s(extent_hooks=%p, addr=%p, size=%zu, committed=%s, "
+	    "arena_ind=%u)\n", __func__, extent_hooks, addr, size, committed ?
+	    "true" : "false", arena_ind);
+	expect_ptr_eq(extent_hooks, &hooks,
+	    "extent_hooks should be same as pointer used to set hooks");
+	expect_ptr_eq(extent_hooks->dalloc, extent_dalloc_unmap,
+	    "Wrong hook function");
+	called_dalloc = true;
+	if (!try_dalloc) {
+		return true;
+	}
+	did_dalloc = true;
+	if (!maps_coalesce && opt_retain) {
+		return true;
+	}
+	pages_unmap(addr, size);
+	return false;
+}
+
+static extent_hooks_t hooks_orig;
+
+static extent_hooks_t hooks_unmap = {
+	extent_alloc_hook,
+	extent_dalloc_unmap, /* dalloc */
+	extent_destroy_hook,
+	extent_commit_hook,
+	extent_decommit_hook,
+	extent_purge_lazy_hook,
+	extent_purge_forced_hook,
+	extent_split_hook,
+	extent_merge_hook
+};
+
+TEST_BEGIN(test_arena_destroy_hooks_unmap) {
+	unsigned arena_ind;
+	void **ptrs;
+	unsigned nptrs;
+
+	extent_hooks_prep();
+	if (maps_coalesce) {
+		try_decommit = false;
+	}
+	memcpy(&hooks_orig, &hooks, sizeof(extent_hooks_t));
+	memcpy(&hooks, &hooks_unmap, sizeof(extent_hooks_t));
+
+	did_alloc = false;
+	arena_ind = do_arena_create(&hooks);
+	do_arena_reset_pre(arena_ind, &ptrs, &nptrs);
+
+	expect_true(did_alloc, "Expected alloc");
+
+	expect_false(arena_i_initialized(arena_ind, false),
+	    "Arena stats should not be initialized");
+	expect_true(arena_i_initialized(arena_ind, true),
+	    "Arena stats should be initialized");
+
+	did_dalloc = false;
+	do_arena_destroy(arena_ind);
+	expect_true(did_dalloc, "Expected dalloc");
+
+	expect_false(arena_i_initialized(arena_ind, true),
+	    "Arena stats should not be initialized");
+	expect_true(arena_i_initialized(MALLCTL_ARENAS_DESTROYED, false),
+	    "Destroyed arena stats should be initialized");
+
+	do_arena_reset_post(ptrs, nptrs, arena_ind);
+
+	memcpy(&hooks, &hooks_orig, sizeof(extent_hooks_t));
+}
+TEST_END
+
+int
+main(void) {
+	return test(
+	    test_arena_reset,
+	    test_arena_destroy_initial,
+	    test_arena_destroy_hooks_default,
+	    test_arena_destroy_hooks_unmap);
+}
diff --git a/deps/jemalloc/test/unit/arena_reset_prof.c b/deps/jemalloc/test/unit/arena_reset_prof.c
new file mode 100644
index 0000000..38d8012
--- /dev/null
+++ b/deps/jemalloc/test/unit/arena_reset_prof.c
@@ -0,0 +1,4 @@
+#include "test/jemalloc_test.h"
+#define ARENA_RESET_PROF_C_
+
+#include "arena_reset.c"
diff --git a/deps/jemalloc/test/unit/arena_reset_prof.sh b/deps/jemalloc/test/unit/arena_reset_prof.sh
new file mode 100644
index 0000000..041dc1c
--- /dev/null
+++ b/deps/jemalloc/test/unit/arena_reset_prof.sh
@@ -0,0 +1,3 @@
+#!/bin/sh
+
+export MALLOC_CONF="prof:true,lg_prof_sample:0"
diff --git a/deps/jemalloc/test/unit/atomic.c b/deps/jemalloc/test/unit/atomic.c
new file mode 100644
index 0000000..c2ec8c7
--- /dev/null
+++ b/deps/jemalloc/test/unit/atomic.c
@@ -0,0 +1,229 @@
+#include "test/jemalloc_test.h"
+
+/*
+ * We *almost* have consistent short names (e.g. "u32" for uint32_t, "b" for
+ * bool, etc.  The one exception is that the short name for void * is "p" in
+ * some places and "ptr" in others.  In the long run it would be nice to unify
+ * these, but in the short run we'll use this shim.
+ */
+#define expect_p_eq expect_ptr_eq
+
+/*
+ * t: the non-atomic type, like "uint32_t".
+ * ta: the short name for the type, like "u32".
+ * val[1,2,3]: Values of the given type.  The CAS tests use val2 for expected,
+ * and val3 for desired.
+ */
+
+#define DO_TESTS(t, ta, val1, val2, val3) do {				\
+	t val;								\
+	t expected;							\
+	bool success;							\
+	/* This (along with the load below) also tests ATOMIC_LOAD. */	\
+	atomic_##ta##_t atom = ATOMIC_INIT(val1);			\
+									\
+	/* ATOMIC_INIT and load. */					\
+	val = atomic_load_##ta(&atom, ATOMIC_RELAXED);			\
+	expect_##ta##_eq(val1, val, "Load or init failed");		\
+									\
+	/* Store. */							\
+	atomic_store_##ta(&atom, val1, ATOMIC_RELAXED);			\
+	atomic_store_##ta(&atom, val2, ATOMIC_RELAXED);			\
+	val = atomic_load_##ta(&atom, ATOMIC_RELAXED);			\
+	expect_##ta##_eq(val2, val, "Store failed");			\
+									\
+	/* Exchange. */							\
+	atomic_store_##ta(&atom, val1, ATOMIC_RELAXED);			\
+	val = atomic_exchange_##ta(&atom, val2, ATOMIC_RELAXED);	\
+	expect_##ta##_eq(val1, val, "Exchange returned invalid value");	\
+	val = atomic_load_##ta(&atom, ATOMIC_RELAXED);			\
+	expect_##ta##_eq(val2, val, "Exchange store invalid value");	\
+									\
+	/* 								\
+	 * Weak CAS.  Spurious failures are allowed, so we loop a few	\
+	 * times.							\
+	 */								\
+	atomic_store_##ta(&atom, val1, ATOMIC_RELAXED);			\
+	success = false;						\
+	for (int retry = 0; retry < 10 && !success; retry++) {		\
+		expected = val2;					\
+		success = atomic_compare_exchange_weak_##ta(&atom,	\
+		    &expected, val3, ATOMIC_RELAXED, ATOMIC_RELAXED);	\
+		expect_##ta##_eq(val1, expected, 			\
+		    "CAS should update expected");			\
+	}								\
+	expect_b_eq(val1 == val2, success,				\
+	    "Weak CAS did the wrong state update");			\
+	val = atomic_load_##ta(&atom, ATOMIC_RELAXED);			\
+	if (success) {							\
+		expect_##ta##_eq(val3, val,				\
+		    "Successful CAS should update atomic");		\
+	} else {							\
+		expect_##ta##_eq(val1, val,				\
+		    "Unsuccessful CAS should not update atomic");	\
+	}								\
+									\
+	/* Strong CAS. */						\
+	atomic_store_##ta(&atom, val1, ATOMIC_RELAXED);			\
+	expected = val2;						\
+	success = atomic_compare_exchange_strong_##ta(&atom, &expected,	\
+	    val3, ATOMIC_RELAXED, ATOMIC_RELAXED);			\
+	expect_b_eq(val1 == val2, success,				\
+	    "Strong CAS did the wrong state update");			\
+	val = atomic_load_##ta(&atom, ATOMIC_RELAXED);			\
+	if (success) {							\
+		expect_##ta##_eq(val3, val,				\
+		    "Successful CAS should update atomic");		\
+	} else {							\
+		expect_##ta##_eq(val1, val,				\
+		    "Unsuccessful CAS should not update atomic");	\
+	}								\
+									\
+									\
+} while (0)
+
+#define DO_INTEGER_TESTS(t, ta, val1, val2) do {			\
+	atomic_##ta##_t atom;						\
+	t val;								\
+									\
+	/* Fetch-add. */						\
+	atomic_store_##ta(&atom, val1, ATOMIC_RELAXED);			\
+	val = atomic_fetch_add_##ta(&atom, val2, ATOMIC_RELAXED);	\
+	expect_##ta##_eq(val1, val,					\
+	    "Fetch-add should return previous value");			\
+	val = atomic_load_##ta(&atom, ATOMIC_RELAXED);			\
+	expect_##ta##_eq(val1 + val2, val,				\
+	    "Fetch-add should update atomic");				\
+									\
+	/* Fetch-sub. */						\
+	atomic_store_##ta(&atom, val1, ATOMIC_RELAXED);			\
+	val = atomic_fetch_sub_##ta(&atom, val2, ATOMIC_RELAXED);	\
+	expect_##ta##_eq(val1, val,					\
+	    "Fetch-sub should return previous value");			\
+	val = atomic_load_##ta(&atom, ATOMIC_RELAXED);			\
+	expect_##ta##_eq(val1 - val2, val,				\
+	    "Fetch-sub should update atomic");				\
+									\
+	/* Fetch-and. */						\
+	atomic_store_##ta(&atom, val1, ATOMIC_RELAXED);			\
+	val = atomic_fetch_and_##ta(&atom, val2, ATOMIC_RELAXED);	\
+	expect_##ta##_eq(val1, val,					\
+	    "Fetch-and should return previous value");			\
+	val = atomic_load_##ta(&atom, ATOMIC_RELAXED);			\
+	expect_##ta##_eq(val1 & val2, val,				\
+	    "Fetch-and should update atomic");				\
+									\
+	/* Fetch-or. */							\
+	atomic_store_##ta(&atom, val1, ATOMIC_RELAXED);			\
+	val = atomic_fetch_or_##ta(&atom, val2, ATOMIC_RELAXED);	\
+	expect_##ta##_eq(val1, val,					\
+	    "Fetch-or should return previous value");			\
+	val = atomic_load_##ta(&atom, ATOMIC_RELAXED);			\
+	expect_##ta##_eq(val1 | val2, val,				\
+	    "Fetch-or should update atomic");				\
+									\
+	/* Fetch-xor. */						\
+	atomic_store_##ta(&atom, val1, ATOMIC_RELAXED);			\
+	val = atomic_fetch_xor_##ta(&atom, val2, ATOMIC_RELAXED);	\
+	expect_##ta##_eq(val1, val,					\
+	    "Fetch-xor should return previous value");			\
+	val = atomic_load_##ta(&atom, ATOMIC_RELAXED);			\
+	expect_##ta##_eq(val1 ^ val2, val,				\
+	    "Fetch-xor should update atomic");				\
+} while (0)
+
+#define TEST_STRUCT(t, ta)						\
+typedef struct {							\
+	t val1;								\
+	t val2;								\
+	t val3;								\
+} ta##_test_t;
+
+#define TEST_CASES(t) {							\
+	{(t)-1, (t)-1, (t)-2},						\
+	{(t)-1, (t) 0, (t)-2},						\
+	{(t)-1, (t) 1, (t)-2},						\
+									\
+	{(t) 0, (t)-1, (t)-2},						\
+	{(t) 0, (t) 0, (t)-2},						\
+	{(t) 0, (t) 1, (t)-2},						\
+									\
+	{(t) 1, (t)-1, (t)-2},						\
+	{(t) 1, (t) 0, (t)-2},						\
+	{(t) 1, (t) 1, (t)-2},						\
+									\
+	{(t)0, (t)-(1 << 22), (t)-2},					\
+	{(t)0, (t)(1 << 22), (t)-2},					\
+	{(t)(1 << 22), (t)-(1 << 22), (t)-2},				\
+	{(t)(1 << 22), (t)(1 << 22), (t)-2}				\
+}
+
+#define TEST_BODY(t, ta) do {						\
+	const ta##_test_t tests[] = TEST_CASES(t);			\
+	for (unsigned i = 0; i < sizeof(tests)/sizeof(tests[0]); i++) {	\
+		ta##_test_t test = tests[i];				\
+		DO_TESTS(t, ta, test.val1, test.val2, test.val3);	\
+	}								\
+} while (0)
+
+#define INTEGER_TEST_BODY(t, ta) do {					\
+	const ta##_test_t tests[] = TEST_CASES(t);			\
+	for (unsigned i = 0; i < sizeof(tests)/sizeof(tests[0]); i++) {	\
+		ta##_test_t test = tests[i];				\
+		DO_TESTS(t, ta, test.val1, test.val2, test.val3);	\
+		DO_INTEGER_TESTS(t, ta, test.val1, test.val2);		\
+	}								\
+} while (0)
+
+TEST_STRUCT(uint64_t, u64);
+TEST_BEGIN(test_atomic_u64) {
+#if !(LG_SIZEOF_PTR == 3 || LG_SIZEOF_INT == 3)
+	test_skip("64-bit atomic operations not supported");
+#else
+	INTEGER_TEST_BODY(uint64_t, u64);
+#endif
+}
+TEST_END
+
+
+TEST_STRUCT(uint32_t, u32);
+TEST_BEGIN(test_atomic_u32) {
+	INTEGER_TEST_BODY(uint32_t, u32);
+}
+TEST_END
+
+TEST_STRUCT(void *, p);
+TEST_BEGIN(test_atomic_p) {
+	TEST_BODY(void *, p);
+}
+TEST_END
+
+TEST_STRUCT(size_t, zu);
+TEST_BEGIN(test_atomic_zu) {
+	INTEGER_TEST_BODY(size_t, zu);
+}
+TEST_END
+
+TEST_STRUCT(ssize_t, zd);
+TEST_BEGIN(test_atomic_zd) {
+	INTEGER_TEST_BODY(ssize_t, zd);
+}
+TEST_END
+
+
+TEST_STRUCT(unsigned, u);
+TEST_BEGIN(test_atomic_u) {
+	INTEGER_TEST_BODY(unsigned, u);
+}
+TEST_END
+
+int
+main(void) {
+	return test(
+	    test_atomic_u64,
+	    test_atomic_u32,
+	    test_atomic_p,
+	    test_atomic_zu,
+	    test_atomic_zd,
+	    test_atomic_u);
+}
diff --git a/deps/jemalloc/test/unit/background_thread.c b/deps/jemalloc/test/unit/background_thread.c
new file mode 100644
index 0000000..c60010a
--- /dev/null
+++ b/deps/jemalloc/test/unit/background_thread.c
@@ -0,0 +1,118 @@
+#include "test/jemalloc_test.h"
+
+#include "jemalloc/internal/util.h"
+
+static void
+test_switch_background_thread_ctl(bool new_val) {
+	bool e0, e1;
+	size_t sz = sizeof(bool);
+
+	e1 = new_val;
+	expect_d_eq(mallctl("background_thread", (void *)&e0, &sz,
+	    &e1, sz), 0, "Unexpected mallctl() failure");
+	expect_b_eq(e0, !e1,
+	    "background_thread should be %d before.\n", !e1);
+	if (e1) {
+		expect_zu_gt(n_background_threads, 0,
+		    "Number of background threads should be non zero.\n");
+	} else {
+		expect_zu_eq(n_background_threads, 0,
+		    "Number of background threads should be zero.\n");
+	}
+}
+
+static void
+test_repeat_background_thread_ctl(bool before) {
+	bool e0, e1;
+	size_t sz = sizeof(bool);
+
+	e1 = before;
+	expect_d_eq(mallctl("background_thread", (void *)&e0, &sz,
+	    &e1, sz), 0, "Unexpected mallctl() failure");
+	expect_b_eq(e0, before,
+	    "background_thread should be %d.\n", before);
+	if (e1) {
+		expect_zu_gt(n_background_threads, 0,
+		    "Number of background threads should be non zero.\n");
+	} else {
+		expect_zu_eq(n_background_threads, 0,
+		    "Number of background threads should be zero.\n");
+	}
+}
+
+TEST_BEGIN(test_background_thread_ctl) {
+	test_skip_if(!have_background_thread);
+
+	bool e0, e1;
+	size_t sz = sizeof(bool);
+
+	expect_d_eq(mallctl("opt.background_thread", (void *)&e0, &sz,
+	    NULL, 0), 0, "Unexpected mallctl() failure");
+	expect_d_eq(mallctl("background_thread", (void *)&e1, &sz,
+	    NULL, 0), 0, "Unexpected mallctl() failure");
+	expect_b_eq(e0, e1,
+	    "Default and opt.background_thread does not match.\n");
+	if (e0) {
+		test_switch_background_thread_ctl(false);
+	}
+	expect_zu_eq(n_background_threads, 0,
+	    "Number of background threads should be 0.\n");
+
+	for (unsigned i = 0; i < 4; i++) {
+		test_switch_background_thread_ctl(true);
+		test_repeat_background_thread_ctl(true);
+		test_repeat_background_thread_ctl(true);
+
+		test_switch_background_thread_ctl(false);
+		test_repeat_background_thread_ctl(false);
+		test_repeat_background_thread_ctl(false);
+	}
+}
+TEST_END
+
+TEST_BEGIN(test_background_thread_running) {
+	test_skip_if(!have_background_thread);
+	test_skip_if(!config_stats);
+
+#if defined(JEMALLOC_BACKGROUND_THREAD)
+	tsd_t *tsd = tsd_fetch();
+	background_thread_info_t *info = &background_thread_info[0];
+
+	test_repeat_background_thread_ctl(false);
+	test_switch_background_thread_ctl(true);
+	expect_b_eq(info->state, background_thread_started,
+	    "Background_thread did not start.\n");
+
+	nstime_t start;
+	nstime_init_update(&start);
+
+	bool ran = false;
+	while (true) {
+		malloc_mutex_lock(tsd_tsdn(tsd), &info->mtx);
+		if (info->tot_n_runs > 0) {
+			ran = true;
+		}
+		malloc_mutex_unlock(tsd_tsdn(tsd), &info->mtx);
+		if (ran) {
+			break;
+		}
+
+		nstime_t now;
+		nstime_init_update(&now);
+		nstime_subtract(&now, &start);
+		expect_u64_lt(nstime_sec(&now), 1000,
+		    "Background threads did not run for 1000 seconds.");
+		sleep(1);
+	}
+	test_switch_background_thread_ctl(false);
+#endif
+}
+TEST_END
+
+int
+main(void) {
+	/* Background_thread creation tests reentrancy naturally. */
+	return test_no_reentrancy(
+	    test_background_thread_ctl,
+	    test_background_thread_running);
+}
diff --git a/deps/jemalloc/test/unit/background_thread_enable.c b/deps/jemalloc/test/unit/background_thread_enable.c
new file mode 100644
index 0000000..44034ac
--- /dev/null
+++ b/deps/jemalloc/test/unit/background_thread_enable.c
@@ -0,0 +1,96 @@
+#include "test/jemalloc_test.h"
+
+const char *malloc_conf = "background_thread:false,narenas:1,max_background_threads:20";
+
+static unsigned
+max_test_narenas(void) {
+	/*
+	 * 10 here is somewhat arbitrary, except insofar as we want to ensure
+	 * that the number of background threads is smaller than the number of
+	 * arenas.  I'll ragequit long before we have to spin up 10 threads per
+	 * cpu to handle background purging, so this is a conservative
+	 * approximation.
+	 */
+	unsigned ret = 10 * ncpus;
+	/* Limit the max to avoid VM exhaustion on 32-bit . */
+	if (ret > 512) {
+		ret = 512;
+	}
+
+	return ret;
+}
+
+TEST_BEGIN(test_deferred) {
+	test_skip_if(!have_background_thread);
+
+	unsigned id;
+	size_t sz_u = sizeof(unsigned);
+
+	for (unsigned i = 0; i < max_test_narenas(); i++) {
+		expect_d_eq(mallctl("arenas.create", &id, &sz_u, NULL, 0), 0,
+		    "Failed to create arena");
+	}
+
+	bool enable = true;
+	size_t sz_b = sizeof(bool);
+	expect_d_eq(mallctl("background_thread", NULL, NULL, &enable, sz_b), 0,
+	    "Failed to enable background threads");
+	enable = false;
+	expect_d_eq(mallctl("background_thread", NULL, NULL, &enable, sz_b), 0,
+	    "Failed to disable background threads");
+}
+TEST_END
+
+TEST_BEGIN(test_max_background_threads) {
+	test_skip_if(!have_background_thread);
+
+	size_t max_n_thds;
+	size_t opt_max_n_thds;
+	size_t sz_m = sizeof(max_n_thds);
+	expect_d_eq(mallctl("opt.max_background_threads",
+	    &opt_max_n_thds, &sz_m, NULL, 0), 0,
+	    "Failed to get opt.max_background_threads");
+	expect_d_eq(mallctl("max_background_threads", &max_n_thds, &sz_m, NULL,
+	    0), 0, "Failed to get max background threads");
+	expect_zu_eq(opt_max_n_thds, max_n_thds,
+	    "max_background_threads and "
+	    "opt.max_background_threads should match");
+	expect_d_eq(mallctl("max_background_threads", NULL, NULL, &max_n_thds,
+	    sz_m), 0, "Failed to set max background threads");
+
+	unsigned id;
+	size_t sz_u = sizeof(unsigned);
+
+	for (unsigned i = 0; i < max_test_narenas(); i++) {
+		expect_d_eq(mallctl("arenas.create", &id, &sz_u, NULL, 0), 0,
+		    "Failed to create arena");
+	}
+
+	bool enable = true;
+	size_t sz_b = sizeof(bool);
+	expect_d_eq(mallctl("background_thread", NULL, NULL, &enable, sz_b), 0,
+	    "Failed to enable background threads");
+	expect_zu_eq(n_background_threads, max_n_thds,
+	    "Number of background threads should not change.\n");
+	size_t new_max_thds = max_n_thds - 1;
+	if (new_max_thds > 0) {
+		expect_d_eq(mallctl("max_background_threads", NULL, NULL,
+		    &new_max_thds, sz_m), 0,
+		    "Failed to set max background threads");
+		expect_zu_eq(n_background_threads, new_max_thds,
+		    "Number of background threads should decrease by 1.\n");
+	}
+	new_max_thds = 1;
+	expect_d_eq(mallctl("max_background_threads", NULL, NULL, &new_max_thds,
+	    sz_m), 0, "Failed to set max background threads");
+	expect_zu_eq(n_background_threads, new_max_thds,
+	    "Number of background threads should be 1.\n");
+}
+TEST_END
+
+int
+main(void) {
+	return test_no_reentrancy(
+		test_deferred,
+		test_max_background_threads);
+}
diff --git a/deps/jemalloc/test/unit/base.c b/deps/jemalloc/test/unit/base.c
new file mode 100644
index 0000000..15e04a8
--- /dev/null
+++ b/deps/jemalloc/test/unit/base.c
@@ -0,0 +1,265 @@
+#include "test/jemalloc_test.h"
+
+#include "test/extent_hooks.h"
+
+static extent_hooks_t hooks_null = {
+	extent_alloc_hook,
+	NULL, /* dalloc */
+	NULL, /* destroy */
+	NULL, /* commit */
+	NULL, /* decommit */
+	NULL, /* purge_lazy */
+	NULL, /* purge_forced */
+	NULL, /* split */
+	NULL /* merge */
+};
+
+static extent_hooks_t hooks_not_null = {
+	extent_alloc_hook,
+	extent_dalloc_hook,
+	extent_destroy_hook,
+	NULL, /* commit */
+	extent_decommit_hook,
+	extent_purge_lazy_hook,
+	extent_purge_forced_hook,
+	NULL, /* split */
+	NULL /* merge */
+};
+
+TEST_BEGIN(test_base_hooks_default) {
+	base_t *base;
+	size_t allocated0, allocated1, resident, mapped, n_thp;
+
+	tsdn_t *tsdn = tsd_tsdn(tsd_fetch());
+	base = base_new(tsdn, 0,
+	    (extent_hooks_t *)&ehooks_default_extent_hooks,
+	    /* metadata_use_hooks */ true);
+
+	if (config_stats) {
+		base_stats_get(tsdn, base, &allocated0, &resident, &mapped,
+		    &n_thp);
+		expect_zu_ge(allocated0, sizeof(base_t),
+		    "Base header should count as allocated");
+		if (opt_metadata_thp == metadata_thp_always) {
+			expect_zu_gt(n_thp, 0,
+			    "Base should have 1 THP at least.");
+		}
+	}
+
+	expect_ptr_not_null(base_alloc(tsdn, base, 42, 1),
+	    "Unexpected base_alloc() failure");
+
+	if (config_stats) {
+		base_stats_get(tsdn, base, &allocated1, &resident, &mapped,
+		    &n_thp);
+		expect_zu_ge(allocated1 - allocated0, 42,
+		    "At least 42 bytes were allocated by base_alloc()");
+	}
+
+	base_delete(tsdn, base);
+}
+TEST_END
+
+TEST_BEGIN(test_base_hooks_null) {
+	extent_hooks_t hooks_orig;
+	base_t *base;
+	size_t allocated0, allocated1, resident, mapped, n_thp;
+
+	extent_hooks_prep();
+	try_dalloc = false;
+	try_destroy = true;
+	try_decommit = false;
+	try_purge_lazy = false;
+	try_purge_forced = false;
+	memcpy(&hooks_orig, &hooks, sizeof(extent_hooks_t));
+	memcpy(&hooks, &hooks_null, sizeof(extent_hooks_t));
+
+	tsdn_t *tsdn = tsd_tsdn(tsd_fetch());
+	base = base_new(tsdn, 0, &hooks, /* metadata_use_hooks */ true);
+	expect_ptr_not_null(base, "Unexpected base_new() failure");
+
+	if (config_stats) {
+		base_stats_get(tsdn, base, &allocated0, &resident, &mapped,
+		    &n_thp);
+		expect_zu_ge(allocated0, sizeof(base_t),
+		    "Base header should count as allocated");
+		if (opt_metadata_thp == metadata_thp_always) {
+			expect_zu_gt(n_thp, 0,
+			    "Base should have 1 THP at least.");
+		}
+	}
+
+	expect_ptr_not_null(base_alloc(tsdn, base, 42, 1),
+	    "Unexpected base_alloc() failure");
+
+	if (config_stats) {
+		base_stats_get(tsdn, base, &allocated1, &resident, &mapped,
+		    &n_thp);
+		expect_zu_ge(allocated1 - allocated0, 42,
+		    "At least 42 bytes were allocated by base_alloc()");
+	}
+
+	base_delete(tsdn, base);
+
+	memcpy(&hooks, &hooks_orig, sizeof(extent_hooks_t));
+}
+TEST_END
+
+TEST_BEGIN(test_base_hooks_not_null) {
+	extent_hooks_t hooks_orig;
+	base_t *base;
+	void *p, *q, *r, *r_exp;
+
+	extent_hooks_prep();
+	try_dalloc = false;
+	try_destroy = true;
+	try_decommit = false;
+	try_purge_lazy = false;
+	try_purge_forced = false;
+	memcpy(&hooks_orig, &hooks, sizeof(extent_hooks_t));
+	memcpy(&hooks, &hooks_not_null, sizeof(extent_hooks_t));
+
+	tsdn_t *tsdn = tsd_tsdn(tsd_fetch());
+	did_alloc = false;
+	base = base_new(tsdn, 0, &hooks, /* metadata_use_hooks */ true);
+	expect_ptr_not_null(base, "Unexpected base_new() failure");
+	expect_true(did_alloc, "Expected alloc");
+
+	/*
+	 * Check for tight packing at specified alignment under simple
+	 * conditions.
+	 */
+	{
+		const size_t alignments[] = {
+			1,
+			QUANTUM,
+			QUANTUM << 1,
+			CACHELINE,
+			CACHELINE << 1,
+		};
+		unsigned i;
+
+		for (i = 0; i < sizeof(alignments) / sizeof(size_t); i++) {
+			size_t alignment = alignments[i];
+			size_t align_ceil = ALIGNMENT_CEILING(alignment,
+			    QUANTUM);
+			p = base_alloc(tsdn, base, 1, alignment);
+			expect_ptr_not_null(p,
+			    "Unexpected base_alloc() failure");
+			expect_ptr_eq(p,
+			    (void *)(ALIGNMENT_CEILING((uintptr_t)p,
+			    alignment)), "Expected quantum alignment");
+			q = base_alloc(tsdn, base, alignment, alignment);
+			expect_ptr_not_null(q,
+			    "Unexpected base_alloc() failure");
+			expect_ptr_eq((void *)((uintptr_t)p + align_ceil), q,
+			    "Minimal allocation should take up %zu bytes",
+			    align_ceil);
+			r = base_alloc(tsdn, base, 1, alignment);
+			expect_ptr_not_null(r,
+			    "Unexpected base_alloc() failure");
+			expect_ptr_eq((void *)((uintptr_t)q + align_ceil), r,
+			    "Minimal allocation should take up %zu bytes",
+			    align_ceil);
+		}
+	}
+
+	/*
+	 * Allocate an object that cannot fit in the first block, then verify
+	 * that the first block's remaining space is considered for subsequent
+	 * allocation.
+	 */
+	expect_zu_ge(edata_bsize_get(&base->blocks->edata), QUANTUM,
+	    "Remainder insufficient for test");
+	/* Use up all but one quantum of block. */
+	while (edata_bsize_get(&base->blocks->edata) > QUANTUM) {
+		p = base_alloc(tsdn, base, QUANTUM, QUANTUM);
+		expect_ptr_not_null(p, "Unexpected base_alloc() failure");
+	}
+	r_exp = edata_addr_get(&base->blocks->edata);
+	expect_zu_eq(base->extent_sn_next, 1, "One extant block expected");
+	q = base_alloc(tsdn, base, QUANTUM + 1, QUANTUM);
+	expect_ptr_not_null(q, "Unexpected base_alloc() failure");
+	expect_ptr_ne(q, r_exp, "Expected allocation from new block");
+	expect_zu_eq(base->extent_sn_next, 2, "Two extant blocks expected");
+	r = base_alloc(tsdn, base, QUANTUM, QUANTUM);
+	expect_ptr_not_null(r, "Unexpected base_alloc() failure");
+	expect_ptr_eq(r, r_exp, "Expected allocation from first block");
+	expect_zu_eq(base->extent_sn_next, 2, "Two extant blocks expected");
+
+	/*
+	 * Check for proper alignment support when normal blocks are too small.
+	 */
+	{
+		const size_t alignments[] = {
+			HUGEPAGE,
+			HUGEPAGE << 1
+		};
+		unsigned i;
+
+		for (i = 0; i < sizeof(alignments) / sizeof(size_t); i++) {
+			size_t alignment = alignments[i];
+			p = base_alloc(tsdn, base, QUANTUM, alignment);
+			expect_ptr_not_null(p,
+			    "Unexpected base_alloc() failure");
+			expect_ptr_eq(p,
+			    (void *)(ALIGNMENT_CEILING((uintptr_t)p,
+			    alignment)), "Expected %zu-byte alignment",
+			    alignment);
+		}
+	}
+
+	called_dalloc = called_destroy = called_decommit = called_purge_lazy =
+	    called_purge_forced = false;
+	base_delete(tsdn, base);
+	expect_true(called_dalloc, "Expected dalloc call");
+	expect_true(!called_destroy, "Unexpected destroy call");
+	expect_true(called_decommit, "Expected decommit call");
+	expect_true(called_purge_lazy, "Expected purge_lazy call");
+	expect_true(called_purge_forced, "Expected purge_forced call");
+
+	try_dalloc = true;
+	try_destroy = true;
+	try_decommit = true;
+	try_purge_lazy = true;
+	try_purge_forced = true;
+	memcpy(&hooks, &hooks_orig, sizeof(extent_hooks_t));
+}
+TEST_END
+
+TEST_BEGIN(test_base_ehooks_get_for_metadata_default_hook) {
+	extent_hooks_prep();
+	memcpy(&hooks, &hooks_not_null, sizeof(extent_hooks_t));
+	base_t *base;
+	tsdn_t *tsdn = tsd_tsdn(tsd_fetch());
+	base = base_new(tsdn, 0, &hooks, /* metadata_use_hooks */ false);
+	ehooks_t *ehooks = base_ehooks_get_for_metadata(base);
+	expect_true(ehooks_are_default(ehooks),
+		"Expected default extent hook functions pointer");
+	base_delete(tsdn, base);
+}
+TEST_END
+
+
+TEST_BEGIN(test_base_ehooks_get_for_metadata_custom_hook) {
+	extent_hooks_prep();
+	memcpy(&hooks, &hooks_not_null, sizeof(extent_hooks_t));
+	base_t *base;
+	tsdn_t *tsdn = tsd_tsdn(tsd_fetch());
+	base = base_new(tsdn, 0, &hooks, /* metadata_use_hooks */ true);
+	ehooks_t *ehooks = base_ehooks_get_for_metadata(base);
+	expect_ptr_eq(&hooks, ehooks_get_extent_hooks_ptr(ehooks),
+		"Expected user-specified extend hook functions pointer");
+	base_delete(tsdn, base);
+}
+TEST_END
+
+int
+main(void) {
+	return test(
+	    test_base_hooks_default,
+	    test_base_hooks_null,
+	    test_base_hooks_not_null,
+            test_base_ehooks_get_for_metadata_default_hook,
+            test_base_ehooks_get_for_metadata_custom_hook);
+}
diff --git a/deps/jemalloc/test/unit/batch_alloc.c b/deps/jemalloc/test/unit/batch_alloc.c
new file mode 100644
index 0000000..901c52b
--- /dev/null
+++ b/deps/jemalloc/test/unit/batch_alloc.c
@@ -0,0 +1,189 @@
+#include "test/jemalloc_test.h"
+
+#define BATCH_MAX ((1U << 16) + 1024)
+static void *global_ptrs[BATCH_MAX];
+
+#define PAGE_ALIGNED(ptr) (((uintptr_t)ptr & PAGE_MASK) == 0)
+
+static void
+verify_batch_basic(tsd_t *tsd, void **ptrs, size_t batch, size_t usize,
+    bool zero) {
+	for (size_t i = 0; i < batch; ++i) {
+		void *p = ptrs[i];
+		expect_zu_eq(isalloc(tsd_tsdn(tsd), p), usize, "");
+		if (zero) {
+			for (size_t k = 0; k < usize; ++k) {
+				expect_true(*((unsigned char *)p + k) == 0, "");
+			}
+		}
+	}
+}
+
+static void
+verify_batch_locality(tsd_t *tsd, void **ptrs, size_t batch, size_t usize,
+    arena_t *arena, unsigned nregs) {
+	if (config_prof && opt_prof) {
+		/*
+		 * Checking batch locality when prof is on is feasible but
+		 * complicated, while checking the non-prof case suffices for
+		 * unit-test purpose.
+		 */
+		return;
+	}
+	for (size_t i = 0, j = 0; i < batch; ++i, ++j) {
+		if (j == nregs) {
+			j = 0;
+		}
+		if (j == 0 && batch - i < nregs) {
+			break;
+		}
+		void *p = ptrs[i];
+		expect_ptr_eq(iaalloc(tsd_tsdn(tsd), p), arena, "");
+		if (j == 0) {
+			expect_true(PAGE_ALIGNED(p), "");
+			continue;
+		}
+		assert(i > 0);
+		void *q = ptrs[i - 1];
+		expect_true((uintptr_t)p > (uintptr_t)q
+		    && (size_t)((uintptr_t)p - (uintptr_t)q) == usize, "");
+	}
+}
+
+static void
+release_batch(void **ptrs, size_t batch, size_t size) {
+	for (size_t i = 0; i < batch; ++i) {
+		sdallocx(ptrs[i], size, 0);
+	}
+}
+
+typedef struct batch_alloc_packet_s batch_alloc_packet_t;
+struct batch_alloc_packet_s {
+	void **ptrs;
+	size_t num;
+	size_t size;
+	int flags;
+};
+
+static size_t
+batch_alloc_wrapper(void **ptrs, size_t num, size_t size, int flags) {
+	batch_alloc_packet_t batch_alloc_packet = {ptrs, num, size, flags};
+	size_t filled;
+	size_t len = sizeof(size_t);
+	assert_d_eq(mallctl("experimental.batch_alloc", &filled, &len,
+	    &batch_alloc_packet, sizeof(batch_alloc_packet)), 0, "");
+	return filled;
+}
+
+static void
+test_wrapper(size_t size, size_t alignment, bool zero, unsigned arena_flag) {
+	tsd_t *tsd = tsd_fetch();
+	assert(tsd != NULL);
+	const size_t usize =
+	    (alignment != 0 ? sz_sa2u(size, alignment) : sz_s2u(size));
+	const szind_t ind = sz_size2index(usize);
+	const bin_info_t *bin_info = &bin_infos[ind];
+	const unsigned nregs = bin_info->nregs;
+	assert(nregs > 0);
+	arena_t *arena;
+	if (arena_flag != 0) {
+		arena = arena_get(tsd_tsdn(tsd), MALLOCX_ARENA_GET(arena_flag),
+		    false);
+	} else {
+		arena = arena_choose(tsd, NULL);
+	}
+	assert(arena != NULL);
+	int flags = arena_flag;
+	if (alignment != 0) {
+		flags |= MALLOCX_ALIGN(alignment);
+	}
+	if (zero) {
+		flags |= MALLOCX_ZERO;
+	}
+
+	/*
+	 * Allocate for the purpose of bootstrapping arena_tdata, so that the
+	 * change in bin stats won't contaminate the stats to be verified below.
+	 */
+	void *p = mallocx(size, flags | MALLOCX_TCACHE_NONE);
+
+	for (size_t i = 0; i < 4; ++i) {
+		size_t base = 0;
+		if (i == 1) {
+			base = nregs;
+		} else if (i == 2) {
+			base = nregs * 2;
+		} else if (i == 3) {
+			base = (1 << 16);
+		}
+		for (int j = -1; j <= 1; ++j) {
+			if (base == 0 && j == -1) {
+				continue;
+			}
+			size_t batch = base + (size_t)j;
+			assert(batch < BATCH_MAX);
+			size_t filled = batch_alloc_wrapper(global_ptrs, batch,
+			    size, flags);
+			assert_zu_eq(filled, batch, "");
+			verify_batch_basic(tsd, global_ptrs, batch, usize,
+			    zero);
+			verify_batch_locality(tsd, global_ptrs, batch, usize,
+			    arena, nregs);
+			release_batch(global_ptrs, batch, usize);
+		}
+	}
+
+	free(p);
+}
+
+TEST_BEGIN(test_batch_alloc) {
+	test_wrapper(11, 0, false, 0);
+}
+TEST_END
+
+TEST_BEGIN(test_batch_alloc_zero) {
+	test_wrapper(11, 0, true, 0);
+}
+TEST_END
+
+TEST_BEGIN(test_batch_alloc_aligned) {
+	test_wrapper(7, 16, false, 0);
+}
+TEST_END
+
+TEST_BEGIN(test_batch_alloc_manual_arena) {
+	unsigned arena_ind;
+	size_t len_unsigned = sizeof(unsigned);
+	assert_d_eq(mallctl("arenas.create", &arena_ind, &len_unsigned, NULL,
+	    0), 0, "");
+	test_wrapper(11, 0, false, MALLOCX_ARENA(arena_ind));
+}
+TEST_END
+
+TEST_BEGIN(test_batch_alloc_large) {
+	size_t size = SC_LARGE_MINCLASS;
+	for (size_t batch = 0; batch < 4; ++batch) {
+		assert(batch < BATCH_MAX);
+		size_t filled = batch_alloc(global_ptrs, batch, size, 0);
+		assert_zu_eq(filled, batch, "");
+		release_batch(global_ptrs, batch, size);
+	}
+	size = tcache_maxclass + 1;
+	for (size_t batch = 0; batch < 4; ++batch) {
+		assert(batch < BATCH_MAX);
+		size_t filled = batch_alloc(global_ptrs, batch, size, 0);
+		assert_zu_eq(filled, batch, "");
+		release_batch(global_ptrs, batch, size);
+	}
+}
+TEST_END
+
+int
+main(void) {
+	return test(
+	    test_batch_alloc,
+	    test_batch_alloc_zero,
+	    test_batch_alloc_aligned,
+	    test_batch_alloc_manual_arena,
+	    test_batch_alloc_large);
+}
diff --git a/deps/jemalloc/test/unit/batch_alloc.sh b/deps/jemalloc/test/unit/batch_alloc.sh
new file mode 100644
index 0000000..9d81010
--- /dev/null
+++ b/deps/jemalloc/test/unit/batch_alloc.sh
@@ -0,0 +1,3 @@
+#!/bin/sh
+
+export MALLOC_CONF="tcache_gc_incr_bytes:2147483648"
diff --git a/deps/jemalloc/test/unit/batch_alloc_prof.c b/deps/jemalloc/test/unit/batch_alloc_prof.c
new file mode 100644
index 0000000..ef64458
--- /dev/null
+++ b/deps/jemalloc/test/unit/batch_alloc_prof.c
@@ -0,0 +1 @@
+#include "batch_alloc.c"
diff --git a/deps/jemalloc/test/unit/batch_alloc_prof.sh b/deps/jemalloc/test/unit/batch_alloc_prof.sh
new file mode 100644
index 0000000..a2697a6
--- /dev/null
+++ b/deps/jemalloc/test/unit/batch_alloc_prof.sh
@@ -0,0 +1,3 @@
+#!/bin/sh
+
+export MALLOC_CONF="prof:true,lg_prof_sample:14"
diff --git a/deps/jemalloc/test/unit/binshard.c b/deps/jemalloc/test/unit/binshard.c
new file mode 100644
index 0000000..040ea54
--- /dev/null
+++ b/deps/jemalloc/test/unit/binshard.c
@@ -0,0 +1,154 @@
+#include "test/jemalloc_test.h"
+
+/* Config -- "narenas:1,bin_shards:1-160:16|129-512:4|256-256:8" */
+
+#define NTHREADS 16
+#define REMOTE_NALLOC 256
+
+static void *
+thd_producer(void *varg) {
+	void **mem = varg;
+	unsigned arena, i;
+	size_t sz;
+
+	sz = sizeof(arena);
+	/* Remote arena. */
+	expect_d_eq(mallctl("arenas.create", (void *)&arena, &sz, NULL, 0), 0,
+	    "Unexpected mallctl() failure");
+	for (i = 0; i < REMOTE_NALLOC / 2; i++) {
+		mem[i] = mallocx(1, MALLOCX_TCACHE_NONE | MALLOCX_ARENA(arena));
+	}
+
+	/* Remote bin. */
+	for (; i < REMOTE_NALLOC; i++) {
+		mem[i] = mallocx(1, MALLOCX_TCACHE_NONE | MALLOCX_ARENA(0));
+	}
+
+	return NULL;
+}
+
+TEST_BEGIN(test_producer_consumer) {
+	thd_t thds[NTHREADS];
+	void *mem[NTHREADS][REMOTE_NALLOC];
+	unsigned i;
+
+	/* Create producer threads to allocate. */
+	for (i = 0; i < NTHREADS; i++) {
+		thd_create(&thds[i], thd_producer, mem[i]);
+	}
+	for (i = 0; i < NTHREADS; i++) {
+		thd_join(thds[i], NULL);
+	}
+	/* Remote deallocation by the current thread. */
+	for (i = 0; i < NTHREADS; i++) {
+		for (unsigned j = 0; j < REMOTE_NALLOC; j++) {
+			expect_ptr_not_null(mem[i][j],
+			    "Unexpected remote allocation failure");
+			dallocx(mem[i][j], 0);
+		}
+	}
+}
+TEST_END
+
+static void *
+thd_start(void *varg) {
+	void *ptr, *ptr2;
+	edata_t *edata;
+	unsigned shard1, shard2;
+
+	tsdn_t *tsdn = tsdn_fetch();
+	/* Try triggering allocations from sharded bins. */
+	for (unsigned i = 0; i < 1024; i++) {
+		ptr = mallocx(1, MALLOCX_TCACHE_NONE);
+		ptr2 = mallocx(129, MALLOCX_TCACHE_NONE);
+
+		edata = emap_edata_lookup(tsdn, &arena_emap_global, ptr);
+		shard1 = edata_binshard_get(edata);
+		dallocx(ptr, 0);
+		expect_u_lt(shard1, 16, "Unexpected bin shard used");
+
+		edata = emap_edata_lookup(tsdn, &arena_emap_global, ptr2);
+		shard2 = edata_binshard_get(edata);
+		dallocx(ptr2, 0);
+		expect_u_lt(shard2, 4, "Unexpected bin shard used");
+
+		if (shard1 > 0 || shard2 > 0) {
+			/* Triggered sharded bin usage. */
+			return (void *)(uintptr_t)shard1;
+		}
+	}
+
+	return NULL;
+}
+
+TEST_BEGIN(test_bin_shard_mt) {
+	test_skip_if(have_percpu_arena &&
+	    PERCPU_ARENA_ENABLED(opt_percpu_arena));
+
+	thd_t thds[NTHREADS];
+	unsigned i;
+	for (i = 0; i < NTHREADS; i++) {
+		thd_create(&thds[i], thd_start, NULL);
+	}
+	bool sharded = false;
+	for (i = 0; i < NTHREADS; i++) {
+		void *ret;
+		thd_join(thds[i], &ret);
+		if (ret != NULL) {
+			sharded = true;
+		}
+	}
+	expect_b_eq(sharded, true, "Did not find sharded bins");
+}
+TEST_END
+
+TEST_BEGIN(test_bin_shard) {
+	unsigned nbins, i;
+	size_t mib[4], mib2[4];
+	size_t miblen, miblen2, len;
+
+	len = sizeof(nbins);
+	expect_d_eq(mallctl("arenas.nbins", (void *)&nbins, &len, NULL, 0), 0,
+	    "Unexpected mallctl() failure");
+
+	miblen = 4;
+	expect_d_eq(mallctlnametomib("arenas.bin.0.nshards", mib, &miblen), 0,
+	    "Unexpected mallctlnametomib() failure");
+	miblen2 = 4;
+	expect_d_eq(mallctlnametomib("arenas.bin.0.size", mib2, &miblen2), 0,
+	    "Unexpected mallctlnametomib() failure");
+
+	for (i = 0; i < nbins; i++) {
+		uint32_t nshards;
+		size_t size, sz1, sz2;
+
+		mib[2] = i;
+		sz1 = sizeof(nshards);
+		expect_d_eq(mallctlbymib(mib, miblen, (void *)&nshards, &sz1,
+		    NULL, 0), 0, "Unexpected mallctlbymib() failure");
+
+		mib2[2] = i;
+		sz2 = sizeof(size);
+		expect_d_eq(mallctlbymib(mib2, miblen2, (void *)&size, &sz2,
+		    NULL, 0), 0, "Unexpected mallctlbymib() failure");
+
+		if (size >= 1 && size <= 128) {
+			expect_u_eq(nshards, 16, "Unexpected nshards");
+		} else if (size == 256) {
+			expect_u_eq(nshards, 8, "Unexpected nshards");
+		} else if (size > 128 && size <= 512) {
+			expect_u_eq(nshards, 4, "Unexpected nshards");
+		} else {
+			expect_u_eq(nshards, 1, "Unexpected nshards");
+		}
+	}
+}
+TEST_END
+
+int
+main(void) {
+	return test_no_reentrancy(
+	    test_bin_shard,
+	    test_bin_shard_mt,
+	    test_producer_consumer);
+}
diff --git a/deps/jemalloc/test/unit/binshard.sh b/deps/jemalloc/test/unit/binshard.sh
new file mode 100644
index 0000000..c1d58c8
--- /dev/null
+++ b/deps/jemalloc/test/unit/binshard.sh
@@ -0,0 +1,3 @@
+#!/bin/sh
+
+export MALLOC_CONF="narenas:1,bin_shards:1-160:16|129-512:4|256-256:8"
diff --git a/deps/jemalloc/test/unit/bit_util.c b/deps/jemalloc/test/unit/bit_util.c
new file mode 100644
index 0000000..7d31b21
--- /dev/null
+++ b/deps/jemalloc/test/unit/bit_util.c
@@ -0,0 +1,307 @@
+#include "test/jemalloc_test.h"
+
+#include "jemalloc/internal/bit_util.h"
+
+#define TEST_POW2_CEIL(t, suf, pri) do {				\
+	unsigned i, pow2;						\
+	t x;								\
+									\
+	expect_##suf##_eq(pow2_ceil_##suf(0), 0, "Unexpected result");	\
+									\
+	for (i = 0; i < sizeof(t) * 8; i++) {				\
+		expect_##suf##_eq(pow2_ceil_##suf(((t)1) << i), ((t)1)	\
+		    << i, "Unexpected result");				\
+	}								\
+									\
+	for (i = 2; i < sizeof(t) * 8; i++) {				\
+		expect_##suf##_eq(pow2_ceil_##suf((((t)1) << i) - 1),	\
+		    ((t)1) << i, "Unexpected result");			\
+	}								\
+									\
+	for (i = 0; i < sizeof(t) * 8 - 1; i++) {			\
+		expect_##suf##_eq(pow2_ceil_##suf((((t)1) << i) + 1),	\
+		    ((t)1) << (i+1), "Unexpected result");		\
+	}								\
+									\
+	for (pow2 = 1; pow2 < 25; pow2++) {				\
+		for (x = (((t)1) << (pow2-1)) + 1; x <= ((t)1) << pow2;	\
+		    x++) {						\
+			expect_##suf##_eq(pow2_ceil_##suf(x),		\
+			    ((t)1) << pow2,				\
+			    "Unexpected result, x=%"pri, x);		\
+		}							\
+	}								\
+} while (0)
+
+TEST_BEGIN(test_pow2_ceil_u64) {
+	TEST_POW2_CEIL(uint64_t, u64, FMTu64);
+}
+TEST_END
+
+TEST_BEGIN(test_pow2_ceil_u32) {
+	TEST_POW2_CEIL(uint32_t, u32, FMTu32);
+}
+TEST_END
+
+TEST_BEGIN(test_pow2_ceil_zu) {
+	TEST_POW2_CEIL(size_t, zu, "zu");
+}
+TEST_END
+
+void
+expect_lg_ceil_range(size_t input, unsigned answer) {
+	if (input == 1) {
+		expect_u_eq(0, answer, "Got %u as lg_ceil of 1", answer);
+		return;
+	}
+	expect_zu_le(input, (ZU(1) << answer),
+	    "Got %u as lg_ceil of %zu", answer, input);
+	expect_zu_gt(input, (ZU(1) << (answer - 1)),
+	    "Got %u as lg_ceil of %zu", answer, input);
+}
+
+void
+expect_lg_floor_range(size_t input, unsigned answer) {
+	if (input == 1) {
+		expect_u_eq(0, answer, "Got %u as lg_floor of 1", answer);
+		return;
+	}
+	expect_zu_ge(input, (ZU(1) << answer),
+	    "Got %u as lg_floor of %zu", answer, input);
+	expect_zu_lt(input, (ZU(1) << (answer + 1)),
+	    "Got %u as lg_floor of %zu", answer, input);
+}
+
+TEST_BEGIN(test_lg_ceil_floor) {
+	for (size_t i = 1; i < 10 * 1000 * 1000; i++) {
+		expect_lg_ceil_range(i, lg_ceil(i));
+		expect_lg_ceil_range(i, LG_CEIL(i));
+		expect_lg_floor_range(i, lg_floor(i));
+		expect_lg_floor_range(i, LG_FLOOR(i));
+	}
+	for (int i = 10; i < 8 * (1 << LG_SIZEOF_PTR) - 5; i++) {
+		for (size_t j = 0; j < (1 << 4); j++) {
+			size_t num1 = ((size_t)1 << i)
+			    - j * ((size_t)1 << (i - 4));
+			size_t num2 = ((size_t)1 << i)
+			    + j * ((size_t)1 << (i - 4));
+			expect_zu_ne(num1, 0, "Invalid lg argument");
+			expect_zu_ne(num2, 0, "Invalid lg argument");
+			expect_lg_ceil_range(num1, lg_ceil(num1));
+			expect_lg_ceil_range(num1, LG_CEIL(num1));
+			expect_lg_ceil_range(num2, lg_ceil(num2));
+			expect_lg_ceil_range(num2, LG_CEIL(num2));
+
+			expect_lg_floor_range(num1, lg_floor(num1));
+			expect_lg_floor_range(num1, LG_FLOOR(num1));
+			expect_lg_floor_range(num2, lg_floor(num2));
+			expect_lg_floor_range(num2, LG_FLOOR(num2));
+		}
+	}
+}
+TEST_END
+
+#define TEST_FFS(t, suf, test_suf, pri) do {				\
+	for (unsigned i = 0; i < sizeof(t) * 8; i++) {			\
+		for (unsigned j = 0; j <= i; j++) {			\
+			for (unsigned k = 0; k <= j; k++) {		\
+				t x = (t)1 << i;			\
+				x |= (t)1 << j;				\
+				x |= (t)1 << k;				\
+				expect_##test_suf##_eq(ffs_##suf(x), k,	\
+				    "Unexpected result, x=%"pri, x);	\
+			}						\
+		}							\
+	}								\
+} while(0)
+
+TEST_BEGIN(test_ffs_u) {
+	TEST_FFS(unsigned, u, u,"u");
+}
+TEST_END
+
+TEST_BEGIN(test_ffs_lu) {
+	TEST_FFS(unsigned long, lu, lu, "lu");
+}
+TEST_END
+
+TEST_BEGIN(test_ffs_llu) {
+	TEST_FFS(unsigned long long, llu, qd, "llu");
+}
+TEST_END
+
+TEST_BEGIN(test_ffs_u32) {
+	TEST_FFS(uint32_t, u32, u32, FMTu32);
+}
+TEST_END
+
+TEST_BEGIN(test_ffs_u64) {
+	TEST_FFS(uint64_t, u64, u64, FMTu64);
+}
+TEST_END
+
+TEST_BEGIN(test_ffs_zu) {
+	TEST_FFS(size_t, zu, zu, "zu");
+}
+TEST_END
+
+#define TEST_FLS(t, suf, test_suf, pri) do {				\
+	for (unsigned i = 0; i < sizeof(t) * 8; i++) {			\
+		for (unsigned j = 0; j <= i; j++) {			\
+			for (unsigned k = 0; k <= j; k++) {		\
+				t x = (t)1 << i;			\
+				x |= (t)1 << j;				\
+				x |= (t)1 << k;				\
+				expect_##test_suf##_eq(fls_##suf(x), i,	\
+				    "Unexpected result, x=%"pri, x);	\
+			}						\
+		}							\
+	}								\
+} while(0)
+
+TEST_BEGIN(test_fls_u) {
+	TEST_FLS(unsigned, u, u,"u");
+}
+TEST_END
+
+TEST_BEGIN(test_fls_lu) {
+	TEST_FLS(unsigned long, lu, lu, "lu");
+}
+TEST_END
+
+TEST_BEGIN(test_fls_llu) {
+	TEST_FLS(unsigned long long, llu, qd, "llu");
+}
+TEST_END
+
+TEST_BEGIN(test_fls_u32) {
+	TEST_FLS(uint32_t, u32, u32, FMTu32);
+}
+TEST_END
+
+TEST_BEGIN(test_fls_u64) {
+	TEST_FLS(uint64_t, u64, u64, FMTu64);
+}
+TEST_END
+
+TEST_BEGIN(test_fls_zu) {
+	TEST_FLS(size_t, zu, zu, "zu");
+}
+TEST_END
+
+TEST_BEGIN(test_fls_u_slow) {
+	TEST_FLS(unsigned, u_slow, u,"u");
+}
+TEST_END
+
+TEST_BEGIN(test_fls_lu_slow) {
+	TEST_FLS(unsigned long, lu_slow, lu, "lu");
+}
+TEST_END
+
+TEST_BEGIN(test_fls_llu_slow) {
+	TEST_FLS(unsigned long long, llu_slow, qd, "llu");
+}
+TEST_END
+
+static unsigned
+popcount_byte(unsigned byte) {
+	int count = 0;
+	for (int i = 0; i < 8; i++) {
+		if ((byte & (1 << i)) != 0) {
+			count++;
+		}
+	}
+	return count;
+}
+
+static uint64_t
+expand_byte_to_mask(unsigned byte) {
+	uint64_t result = 0;
+	for (int i = 0; i < 8; i++) {
+		if ((byte & (1 << i)) != 0) {
+			result |= ((uint64_t)0xFF << (i * 8));
+		}
+	}
+	return result;
+}
+
+#define TEST_POPCOUNT(t, suf, pri_hex) do {				\
+	t bmul = (t)0x0101010101010101ULL;				\
+	for (unsigned i = 0; i < (1 << sizeof(t)); i++) {		\
+		for (unsigned j = 0; j < 256; j++) {			\
+			/*						\
+			 * Replicate the byte j into various		\
+			 * bytes of the integer (as indicated by the	\
+			 * mask in i), and ensure that the popcount of	\
+			 * the result is popcount(i) * popcount(j)	\
+			 */						\
+			t mask = (t)expand_byte_to_mask(i);		\
+			t x = (bmul * j) & mask;			\
+			expect_u_eq(					\
+			    popcount_byte(i) * popcount_byte(j),	\
+			    popcount_##suf(x),				\
+			    "Unexpected result, x=0x%"pri_hex, x);	\
+		}							\
+	}								\
+} while (0)
+
+TEST_BEGIN(test_popcount_u) {
+	TEST_POPCOUNT(unsigned, u, "x");
+}
+TEST_END
+
+TEST_BEGIN(test_popcount_u_slow) {
+	TEST_POPCOUNT(unsigned, u_slow, "x");
+}
+TEST_END
+
+TEST_BEGIN(test_popcount_lu) {
+	TEST_POPCOUNT(unsigned long, lu, "lx");
+}
+TEST_END
+
+TEST_BEGIN(test_popcount_lu_slow) {
+	TEST_POPCOUNT(unsigned long, lu_slow, "lx");
+}
+TEST_END
+
+TEST_BEGIN(test_popcount_llu) {
+	TEST_POPCOUNT(unsigned long long, llu, "llx");
+}
+TEST_END
+
+TEST_BEGIN(test_popcount_llu_slow) {
+	TEST_POPCOUNT(unsigned long long, llu_slow, "llx");
+}
+TEST_END
+
+int
+main(void) {
+	return test_no_reentrancy(
+	    test_pow2_ceil_u64,
+	    test_pow2_ceil_u32,
+	    test_pow2_ceil_zu,
+	    test_lg_ceil_floor,
+	    test_ffs_u,
+	    test_ffs_lu,
+	    test_ffs_llu,
+	    test_ffs_u32,
+	    test_ffs_u64,
+	    test_ffs_zu,
+	    test_fls_u,
+	    test_fls_lu,
+	    test_fls_llu,
+	    test_fls_u32,
+	    test_fls_u64,
+	    test_fls_zu,
+	    test_fls_u_slow,
+	    test_fls_lu_slow,
+	    test_fls_llu_slow,
+	    test_popcount_u,
+	    test_popcount_u_slow,
+	    test_popcount_lu,
+	    test_popcount_lu_slow,
+	    test_popcount_llu,
+	    test_popcount_llu_slow);
+}
diff --git a/deps/jemalloc/test/unit/bitmap.c b/deps/jemalloc/test/unit/bitmap.c
new file mode 100644
index 0000000..78e542b
--- /dev/null
+++ b/deps/jemalloc/test/unit/bitmap.c
@@ -0,0 +1,343 @@
+#include "test/jemalloc_test.h"
+
+#include "test/nbits.h"
+
+static void
+test_bitmap_initializer_body(const bitmap_info_t *binfo, size_t nbits) {
+	bitmap_info_t binfo_dyn;
+	bitmap_info_init(&binfo_dyn, nbits);
+
+	expect_zu_eq(bitmap_size(binfo), bitmap_size(&binfo_dyn),
+	    "Unexpected difference between static and dynamic initialization, "
+	    "nbits=%zu", nbits);
+	expect_zu_eq(binfo->nbits, binfo_dyn.nbits,
+	    "Unexpected difference between static and dynamic initialization, "
+	    "nbits=%zu", nbits);
+#ifdef BITMAP_USE_TREE
+	expect_u_eq(binfo->nlevels, binfo_dyn.nlevels,
+	    "Unexpected difference between static and dynamic initialization, "
+	    "nbits=%zu", nbits);
+	{
+		unsigned i;
+
+		for (i = 0; i < binfo->nlevels; i++) {
+			expect_zu_eq(binfo->levels[i].group_offset,
+			    binfo_dyn.levels[i].group_offset,
+			    "Unexpected difference between static and dynamic "
+			    "initialization, nbits=%zu, level=%u", nbits, i);
+		}
+	}
+#else
+	expect_zu_eq(binfo->ngroups, binfo_dyn.ngroups,
+	    "Unexpected difference between static and dynamic initialization");
+#endif
+}
+
+TEST_BEGIN(test_bitmap_initializer) {
+#define NB(nbits) {							\
+		if (nbits <= BITMAP_MAXBITS) {				\
+			bitmap_info_t binfo =				\
+			    BITMAP_INFO_INITIALIZER(nbits);		\
+			test_bitmap_initializer_body(&binfo, nbits);	\
+		}							\
+	}
+	NBITS_TAB
+#undef NB
+}
+TEST_END
+
+static size_t
+test_bitmap_size_body(const bitmap_info_t *binfo, size_t nbits,
+    size_t prev_size) {
+	size_t size = bitmap_size(binfo);
+	expect_zu_ge(size, (nbits >> 3),
+	    "Bitmap size is smaller than expected");
+	expect_zu_ge(size, prev_size, "Bitmap size is smaller than expected");
+	return size;
+}
+
+TEST_BEGIN(test_bitmap_size) {
+	size_t nbits, prev_size;
+
+	prev_size = 0;
+	for (nbits = 1; nbits <= BITMAP_MAXBITS; nbits++) {
+		bitmap_info_t binfo;
+		bitmap_info_init(&binfo, nbits);
+		prev_size = test_bitmap_size_body(&binfo, nbits, prev_size);
+	}
+#define NB(nbits) {							\
+		bitmap_info_t binfo = BITMAP_INFO_INITIALIZER(nbits);	\
+		prev_size = test_bitmap_size_body(&binfo, nbits,	\
+		    prev_size);						\
+	}
+	prev_size = 0;
+	NBITS_TAB
+#undef NB
+}
+TEST_END
+
+static void
+test_bitmap_init_body(const bitmap_info_t *binfo, size_t nbits) {
+	size_t i;
+	bitmap_t *bitmap = (bitmap_t *)malloc(bitmap_size(binfo));
+	expect_ptr_not_null(bitmap, "Unexpected malloc() failure");
+
+	bitmap_init(bitmap, binfo, false);
+	for (i = 0; i < nbits; i++) {
+		expect_false(bitmap_get(bitmap, binfo, i),
+		    "Bit should be unset");
+	}
+
+	bitmap_init(bitmap, binfo, true);
+	for (i = 0; i < nbits; i++) {
+		expect_true(bitmap_get(bitmap, binfo, i), "Bit should be set");
+	}
+
+	free(bitmap);
+}
+
+TEST_BEGIN(test_bitmap_init) {
+	size_t nbits;
+
+	for (nbits = 1; nbits <= BITMAP_MAXBITS; nbits++) {
+		bitmap_info_t binfo;
+		bitmap_info_init(&binfo, nbits);
+		test_bitmap_init_body(&binfo, nbits);
+	}
+#define NB(nbits) {							\
+		bitmap_info_t binfo = BITMAP_INFO_INITIALIZER(nbits);	\
+		test_bitmap_init_body(&binfo, nbits);			\
+	}
+	NBITS_TAB
+#undef NB
+}
+TEST_END
+
+static void
+test_bitmap_set_body(const bitmap_info_t *binfo, size_t nbits) {
+	size_t i;
+	bitmap_t *bitmap = (bitmap_t *)malloc(bitmap_size(binfo));
+	expect_ptr_not_null(bitmap, "Unexpected malloc() failure");
+	bitmap_init(bitmap, binfo, false);
+
+	for (i = 0; i < nbits; i++) {
+		bitmap_set(bitmap, binfo, i);
+	}
+	expect_true(bitmap_full(bitmap, binfo), "All bits should be set");
+	free(bitmap);
+}
+
+TEST_BEGIN(test_bitmap_set) {
+	size_t nbits;
+
+	for (nbits = 1; nbits <= BITMAP_MAXBITS; nbits++) {
+		bitmap_info_t binfo;
+		bitmap_info_init(&binfo, nbits);
+		test_bitmap_set_body(&binfo, nbits);
+	}
+#define NB(nbits) {							\
+		bitmap_info_t binfo = BITMAP_INFO_INITIALIZER(nbits);	\
+		test_bitmap_set_body(&binfo, nbits);			\
+	}
+	NBITS_TAB
+#undef NB
+}
+TEST_END
+
+static void
+test_bitmap_unset_body(const bitmap_info_t *binfo, size_t nbits) {
+	size_t i;
+	bitmap_t *bitmap = (bitmap_t *)malloc(bitmap_size(binfo));
+	expect_ptr_not_null(bitmap, "Unexpected malloc() failure");
+	bitmap_init(bitmap, binfo, false);
+
+	for (i = 0; i < nbits; i++) {
+		bitmap_set(bitmap, binfo, i);
+	}
+	expect_true(bitmap_full(bitmap, binfo), "All bits should be set");
+	for (i = 0; i < nbits; i++) {
+		bitmap_unset(bitmap, binfo, i);
+	}
+	for (i = 0; i < nbits; i++) {
+		bitmap_set(bitmap, binfo, i);
+	}
+	expect_true(bitmap_full(bitmap, binfo), "All bits should be set");
+	free(bitmap);
+}
+
+TEST_BEGIN(test_bitmap_unset) {
+	size_t nbits;
+
+	for (nbits = 1; nbits <= BITMAP_MAXBITS; nbits++) {
+		bitmap_info_t binfo;
+		bitmap_info_init(&binfo, nbits);
+		test_bitmap_unset_body(&binfo, nbits);
+	}
+#define NB(nbits) {							\
+		bitmap_info_t binfo = BITMAP_INFO_INITIALIZER(nbits);	\
+		test_bitmap_unset_body(&binfo, nbits);			\
+	}
+	NBITS_TAB
+#undef NB
+}
+TEST_END
+
+static void
+test_bitmap_xfu_body(const bitmap_info_t *binfo, size_t nbits) {
+	bitmap_t *bitmap = (bitmap_t *)malloc(bitmap_size(binfo));
+	expect_ptr_not_null(bitmap, "Unexpected malloc() failure");
+	bitmap_init(bitmap, binfo, false);
+
+	/* Iteratively set bits starting at the beginning. */
+	for (size_t i = 0; i < nbits; i++) {
+		expect_zu_eq(bitmap_ffu(bitmap, binfo, 0), i,
+		    "First unset bit should be just after previous first unset "
+		    "bit");
+		expect_zu_eq(bitmap_ffu(bitmap, binfo, (i > 0) ? i-1 : i), i,
+		    "First unset bit should be just after previous first unset "
+		    "bit");
+		expect_zu_eq(bitmap_ffu(bitmap, binfo, i), i,
+		    "First unset bit should be just after previous first unset "
+		    "bit");
+		expect_zu_eq(bitmap_sfu(bitmap, binfo), i,
+		    "First unset bit should be just after previous first unset "
+		    "bit");
+	}
+	expect_true(bitmap_full(bitmap, binfo), "All bits should be set");
+
+	/*
+	 * Iteratively unset bits starting at the end, and verify that
+	 * bitmap_sfu() reaches the unset bits.
+	 */
+	for (size_t i = nbits - 1; i < nbits; i--) { /* (nbits..0] */
+		bitmap_unset(bitmap, binfo, i);
+		expect_zu_eq(bitmap_ffu(bitmap, binfo, 0), i,
+		    "First unset bit should the bit previously unset");
+		expect_zu_eq(bitmap_ffu(bitmap, binfo, (i > 0) ? i-1 : i), i,
+		    "First unset bit should the bit previously unset");
+		expect_zu_eq(bitmap_ffu(bitmap, binfo, i), i,
+		    "First unset bit should the bit previously unset");
+		expect_zu_eq(bitmap_sfu(bitmap, binfo), i,
+		    "First unset bit should the bit previously unset");
+		bitmap_unset(bitmap, binfo, i);
+	}
+	expect_false(bitmap_get(bitmap, binfo, 0), "Bit should be unset");
+
+	/*
+	 * Iteratively set bits starting at the beginning, and verify that
+	 * bitmap_sfu() looks past them.
+	 */
+	for (size_t i = 1; i < nbits; i++) {
+		bitmap_set(bitmap, binfo, i - 1);
+		expect_zu_eq(bitmap_ffu(bitmap, binfo, 0), i,
+		    "First unset bit should be just after the bit previously "
+		    "set");
+		expect_zu_eq(bitmap_ffu(bitmap, binfo, (i > 0) ? i-1 : i), i,
+		    "First unset bit should be just after the bit previously "
+		    "set");
+		expect_zu_eq(bitmap_ffu(bitmap, binfo, i), i,
+		    "First unset bit should be just after the bit previously "
+		    "set");
+		expect_zu_eq(bitmap_sfu(bitmap, binfo), i,
+		    "First unset bit should be just after the bit previously "
+		    "set");
+		bitmap_unset(bitmap, binfo, i);
+	}
+	expect_zu_eq(bitmap_ffu(bitmap, binfo, 0), nbits - 1,
+	    "First unset bit should be the last bit");
+	expect_zu_eq(bitmap_ffu(bitmap, binfo, (nbits > 1) ? nbits-2 : nbits-1),
+	    nbits - 1, "First unset bit should be the last bit");
+	expect_zu_eq(bitmap_ffu(bitmap, binfo, nbits - 1), nbits - 1,
+	    "First unset bit should be the last bit");
+	expect_zu_eq(bitmap_sfu(bitmap, binfo), nbits - 1,
+	    "First unset bit should be the last bit");
+	expect_true(bitmap_full(bitmap, binfo), "All bits should be set");
+
+	/*
+	 * Bubble a "usu" pattern through the bitmap and verify that
+	 * bitmap_ffu() finds the correct bit for all five min_bit cases.
+	 */
+	if (nbits >= 3) {
+		for (size_t i = 0; i < nbits-2; i++) {
+			bitmap_unset(bitmap, binfo, i);
+			bitmap_unset(bitmap, binfo, i+2);
+			if (i > 0) {
+				expect_zu_eq(bitmap_ffu(bitmap, binfo, i-1), i,
+				    "Unexpected first unset bit");
+			}
+			expect_zu_eq(bitmap_ffu(bitmap, binfo, i), i,
+			    "Unexpected first unset bit");
+			expect_zu_eq(bitmap_ffu(bitmap, binfo, i+1), i+2,
+			    "Unexpected first unset bit");
+			expect_zu_eq(bitmap_ffu(bitmap, binfo, i+2), i+2,
+			    "Unexpected first unset bit");
+			if (i + 3 < nbits) {
+				expect_zu_eq(bitmap_ffu(bitmap, binfo, i+3),
+				    nbits, "Unexpected first unset bit");
+			}
+			expect_zu_eq(bitmap_sfu(bitmap, binfo), i,
+			    "Unexpected first unset bit");
+			expect_zu_eq(bitmap_sfu(bitmap, binfo), i+2,
+			    "Unexpected first unset bit");
+		}
+	}
+
+	/*
+	 * Unset the last bit, bubble another unset bit through the bitmap, and
+	 * verify that bitmap_ffu() finds the correct bit for all four min_bit
+	 * cases.
+	 */
+	if (nbits >= 3) {
+		bitmap_unset(bitmap, binfo, nbits-1);
+		for (size_t i = 0; i < nbits-1; i++) {
+			bitmap_unset(bitmap, binfo, i);
+			if (i > 0) {
+				expect_zu_eq(bitmap_ffu(bitmap, binfo, i-1), i,
+				    "Unexpected first unset bit");
+			}
+			expect_zu_eq(bitmap_ffu(bitmap, binfo, i), i,
+			    "Unexpected first unset bit");
+			expect_zu_eq(bitmap_ffu(bitmap, binfo, i+1), nbits-1,
+			    "Unexpected first unset bit");
+			expect_zu_eq(bitmap_ffu(bitmap, binfo, nbits-1),
+			    nbits-1, "Unexpected first unset bit");
+
+			expect_zu_eq(bitmap_sfu(bitmap, binfo), i,
+			    "Unexpected first unset bit");
+		}
+		expect_zu_eq(bitmap_sfu(bitmap, binfo), nbits-1,
+		    "Unexpected first unset bit");
+	}
+
+	free(bitmap);
+}
+
+TEST_BEGIN(test_bitmap_xfu) {
+	size_t nbits, nbits_max;
+
+	/* The test is O(n^2); large page sizes may slow down too much. */
+	nbits_max = BITMAP_MAXBITS > 512 ? 512 : BITMAP_MAXBITS;
+	for (nbits = 1; nbits <= nbits_max; nbits++) {
+		bitmap_info_t binfo;
+		bitmap_info_init(&binfo, nbits);
+		test_bitmap_xfu_body(&binfo, nbits);
+	}
+#define NB(nbits) {							\
+		bitmap_info_t binfo = BITMAP_INFO_INITIALIZER(nbits);	\
+		test_bitmap_xfu_body(&binfo, nbits);			\
+	}
+	NBITS_TAB
+#undef NB
+}
+TEST_END
+
+int
+main(void) {
+	return test(
+	    test_bitmap_initializer,
+	    test_bitmap_size,
+	    test_bitmap_init,
+	    test_bitmap_set,
+	    test_bitmap_unset,
+	    test_bitmap_xfu);
+}
diff --git a/deps/jemalloc/test/unit/buf_writer.c b/deps/jemalloc/test/unit/buf_writer.c
new file mode 100644
index 0000000..d5e63a0
--- /dev/null
+++ b/deps/jemalloc/test/unit/buf_writer.c
@@ -0,0 +1,196 @@
+#include "test/jemalloc_test.h"
+
+#include "jemalloc/internal/buf_writer.h"
+
+#define TEST_BUF_SIZE 16
+#define UNIT_MAX (TEST_BUF_SIZE * 3)
+
+static size_t test_write_len;
+static char test_buf[TEST_BUF_SIZE];
+static uint64_t arg;
+static uint64_t arg_store;
+
+static void
+test_write_cb(void *cbopaque, const char *s) {
+	size_t prev_test_write_len = test_write_len;
+	test_write_len += strlen(s); /* only increase the length */
+	arg_store = *(uint64_t *)cbopaque; /* only pass along the argument */
+	assert_zu_le(prev_test_write_len, test_write_len,
+	    "Test write overflowed");
+}
+
+static void
+test_buf_writer_body(tsdn_t *tsdn, buf_writer_t *buf_writer) {
+	char s[UNIT_MAX + 1];
+	size_t n_unit, remain, i;
+	ssize_t unit;
+
+	assert(buf_writer->buf != NULL);
+	memset(s, 'a', UNIT_MAX);
+	arg = 4; /* Starting value of random argument. */
+	arg_store = arg;
+	for (unit = UNIT_MAX; unit >= 0; --unit) {
+		/* unit keeps decreasing, so strlen(s) is always unit. */
+		s[unit] = '\0';
+		for (n_unit = 1; n_unit <= 3; ++n_unit) {
+			test_write_len = 0;
+			remain = 0;
+			for (i = 1; i <= n_unit; ++i) {
+				arg = prng_lg_range_u64(&arg, 64);
+				buf_writer_cb(buf_writer, s);
+				remain += unit;
+				if (remain > buf_writer->buf_size) {
+					/* Flushes should have happened. */
+					assert_u64_eq(arg_store, arg, "Call "
+					    "back argument didn't get through");
+					remain %= buf_writer->buf_size;
+					if (remain == 0) {
+						/* Last flush should be lazy. */
+						remain += buf_writer->buf_size;
+					}
+				}
+				assert_zu_eq(test_write_len + remain, i * unit,
+				    "Incorrect length after writing %zu strings"
+				    " of length %zu", i, unit);
+			}
+			buf_writer_flush(buf_writer);
+			expect_zu_eq(test_write_len, n_unit * unit,
+			    "Incorrect length after flushing at the end of"
+			    " writing %zu strings of length %zu", n_unit, unit);
+		}
+	}
+	buf_writer_terminate(tsdn, buf_writer);
+}
+
+TEST_BEGIN(test_buf_write_static) {
+	buf_writer_t buf_writer;
+	tsdn_t *tsdn = tsdn_fetch();
+	assert_false(buf_writer_init(tsdn, &buf_writer, test_write_cb, &arg,
+	    test_buf, TEST_BUF_SIZE),
+	    "buf_writer_init() should not encounter error on static buffer");
+	test_buf_writer_body(tsdn, &buf_writer);
+}
+TEST_END
+
+TEST_BEGIN(test_buf_write_dynamic) {
+	buf_writer_t buf_writer;
+	tsdn_t *tsdn = tsdn_fetch();
+	assert_false(buf_writer_init(tsdn, &buf_writer, test_write_cb, &arg,
+	    NULL, TEST_BUF_SIZE), "buf_writer_init() should not OOM");
+	test_buf_writer_body(tsdn, &buf_writer);
+}
+TEST_END
+
+TEST_BEGIN(test_buf_write_oom) {
+	buf_writer_t buf_writer;
+	tsdn_t *tsdn = tsdn_fetch();
+	assert_true(buf_writer_init(tsdn, &buf_writer, test_write_cb, &arg,
+	    NULL, SC_LARGE_MAXCLASS + 1), "buf_writer_init() should OOM");
+	assert(buf_writer.buf == NULL);
+
+	char s[UNIT_MAX + 1];
+	size_t n_unit, i;
+	ssize_t unit;
+
+	memset(s, 'a', UNIT_MAX);
+	arg = 4; /* Starting value of random argument. */
+	arg_store = arg;
+	for (unit = UNIT_MAX; unit >= 0; unit -= UNIT_MAX / 4) {
+		/* unit keeps decreasing, so strlen(s) is always unit. */
+		s[unit] = '\0';
+		for (n_unit = 1; n_unit <= 3; ++n_unit) {
+			test_write_len = 0;
+			for (i = 1; i <= n_unit; ++i) {
+				arg = prng_lg_range_u64(&arg, 64);
+				buf_writer_cb(&buf_writer, s);
+				assert_u64_eq(arg_store, arg,
+				    "Call back argument didn't get through");
+				assert_zu_eq(test_write_len, i * unit,
+				    "Incorrect length after writing %zu strings"
+				    " of length %zu", i, unit);
+			}
+			buf_writer_flush(&buf_writer);
+			expect_zu_eq(test_write_len, n_unit * unit,
+			    "Incorrect length after flushing at the end of"
+			    " writing %zu strings of length %zu", n_unit, unit);
+		}
+	}
+	buf_writer_terminate(tsdn, &buf_writer);
+}
+TEST_END
+
+static int test_read_count;
+static size_t test_read_len;
+static uint64_t arg_sum;
+
+ssize_t
+test_read_cb(void *cbopaque, void *buf, size_t limit) {
+	static uint64_t rand = 4;
+
+	arg_sum += *(uint64_t *)cbopaque;
+	assert_zu_gt(limit, 0, "Limit for read_cb must be positive");
+	--test_read_count;
+	if (test_read_count == 0) {
+		return -1;
+	} else {
+		size_t read_len = limit;
+		if (limit > 1) {
+			rand = prng_range_u64(&rand, (uint64_t)limit);
+			read_len -= (size_t)rand;
+		}
+		assert(read_len > 0);
+		memset(buf, 'a', read_len);
+		size_t prev_test_read_len = test_read_len;
+		test_read_len += read_len;
+		assert_zu_le(prev_test_read_len, test_read_len,
+		    "Test read overflowed");
+		return read_len;
+	}
+}
+
+static void
+test_buf_writer_pipe_body(tsdn_t *tsdn, buf_writer_t *buf_writer) {
+	arg = 4; /* Starting value of random argument. */
+	for (int count = 5; count > 0; --count) {
+		arg = prng_lg_range_u64(&arg, 64);
+		arg_sum = 0;
+		test_read_count = count;
+		test_read_len = 0;
+		test_write_len = 0;
+		buf_writer_pipe(buf_writer, test_read_cb, &arg);
+		assert(test_read_count == 0);
+		expect_u64_eq(arg_sum, arg * count, "");
+		expect_zu_eq(test_write_len, test_read_len,
+		    "Write length should be equal to read length");
+	}
+	buf_writer_terminate(tsdn, buf_writer);
+}
+
+TEST_BEGIN(test_buf_write_pipe) {
+	buf_writer_t buf_writer;
+	tsdn_t *tsdn = tsdn_fetch();
+	assert_false(buf_writer_init(tsdn, &buf_writer, test_write_cb, &arg,
+	    test_buf, TEST_BUF_SIZE),
+	    "buf_writer_init() should not encounter error on static buffer");
+	test_buf_writer_pipe_body(tsdn, &buf_writer);
+}
+TEST_END
+
+TEST_BEGIN(test_buf_write_pipe_oom) {
+	buf_writer_t buf_writer;
+	tsdn_t *tsdn = tsdn_fetch();
+	assert_true(buf_writer_init(tsdn, &buf_writer, test_write_cb, &arg,
+	    NULL, SC_LARGE_MAXCLASS + 1), "buf_writer_init() should OOM");
+	test_buf_writer_pipe_body(tsdn, &buf_writer);
+}
+TEST_END
+
+int
+main(void) {
+	return test(
+	    test_buf_write_static,
+	    test_buf_write_dynamic,
+	    test_buf_write_oom,
+	    test_buf_write_pipe,
+	    test_buf_write_pipe_oom);
+}
diff --git a/deps/jemalloc/test/unit/cache_bin.c b/deps/jemalloc/test/unit/cache_bin.c
new file mode 100644
index 0000000..3b6dbab
--- /dev/null
+++ b/deps/jemalloc/test/unit/cache_bin.c
@@ -0,0 +1,384 @@
+#include "test/jemalloc_test.h"
+
+static void
+do_fill_test(cache_bin_t *bin, cache_bin_info_t *info, void **ptrs,
+    cache_bin_sz_t ncached_max, cache_bin_sz_t nfill_attempt,
+    cache_bin_sz_t nfill_succeed) {
+	bool success;
+	void *ptr;
+	assert_true(cache_bin_ncached_get_local(bin, info) == 0, "");
+	CACHE_BIN_PTR_ARRAY_DECLARE(arr, nfill_attempt);
+	cache_bin_init_ptr_array_for_fill(bin, info, &arr, nfill_attempt);
+	for (cache_bin_sz_t i = 0; i < nfill_succeed; i++) {
+		arr.ptr[i] = &ptrs[i];
+	}
+	cache_bin_finish_fill(bin, info, &arr, nfill_succeed);
+	expect_true(cache_bin_ncached_get_local(bin, info) == nfill_succeed,
+	    "");
+	cache_bin_low_water_set(bin);
+
+	for (cache_bin_sz_t i = 0; i < nfill_succeed; i++) {
+		ptr = cache_bin_alloc(bin, &success);
+		expect_true(success, "");
+		expect_ptr_eq(ptr, (void *)&ptrs[i],
+		    "Should pop in order filled");
+		expect_true(cache_bin_low_water_get(bin, info)
+		    == nfill_succeed - i - 1, "");
+	}
+	expect_true(cache_bin_ncached_get_local(bin, info) == 0, "");
+	expect_true(cache_bin_low_water_get(bin, info) == 0, "");
+}
+
+static void
+do_flush_test(cache_bin_t *bin, cache_bin_info_t *info, void **ptrs,
+    cache_bin_sz_t nfill, cache_bin_sz_t nflush) {
+	bool success;
+	assert_true(cache_bin_ncached_get_local(bin, info) == 0, "");
+
+	for (cache_bin_sz_t i = 0; i < nfill; i++) {
+		success = cache_bin_dalloc_easy(bin, &ptrs[i]);
+		expect_true(success, "");
+	}
+
+	CACHE_BIN_PTR_ARRAY_DECLARE(arr, nflush);
+	cache_bin_init_ptr_array_for_flush(bin, info, &arr, nflush);
+	for (cache_bin_sz_t i = 0; i < nflush; i++) {
+		expect_ptr_eq(arr.ptr[i], &ptrs[nflush - i - 1], "");
+	}
+	cache_bin_finish_flush(bin, info, &arr, nflush);
+
+	expect_true(cache_bin_ncached_get_local(bin, info) == nfill - nflush,
+	    "");
+	while (cache_bin_ncached_get_local(bin, info) > 0) {
+		cache_bin_alloc(bin, &success);
+	}
+}
+
+static void
+do_batch_alloc_test(cache_bin_t *bin, cache_bin_info_t *info, void **ptrs,
+    cache_bin_sz_t nfill, size_t batch) {
+	assert_true(cache_bin_ncached_get_local(bin, info) == 0, "");
+	CACHE_BIN_PTR_ARRAY_DECLARE(arr, nfill);
+	cache_bin_init_ptr_array_for_fill(bin, info, &arr, nfill);
+	for (cache_bin_sz_t i = 0; i < nfill; i++) {
+		arr.ptr[i] = &ptrs[i];
+	}
+	cache_bin_finish_fill(bin, info, &arr, nfill);
+	assert_true(cache_bin_ncached_get_local(bin, info) == nfill, "");
+	cache_bin_low_water_set(bin);
+
+	void **out = malloc((batch + 1) * sizeof(void *));
+	size_t n = cache_bin_alloc_batch(bin, batch, out);
+	assert_true(n == ((size_t)nfill < batch ? (size_t)nfill : batch), "");
+	for (cache_bin_sz_t i = 0; i < (cache_bin_sz_t)n; i++) {
+		expect_ptr_eq(out[i], &ptrs[i], "");
+	}
+	expect_true(cache_bin_low_water_get(bin, info) == nfill -
+	    (cache_bin_sz_t)n, "");
+	while (cache_bin_ncached_get_local(bin, info) > 0) {
+		bool success;
+		cache_bin_alloc(bin, &success);
+	}
+	free(out);
+}
+
+static void
+test_bin_init(cache_bin_t *bin, cache_bin_info_t *info) {
+	size_t size;
+	size_t alignment;
+	cache_bin_info_compute_alloc(info, 1, &size, &alignment);
+	void *mem = mallocx(size, MALLOCX_ALIGN(alignment));
+	assert_ptr_not_null(mem, "Unexpected mallocx failure");
+
+	size_t cur_offset = 0;
+	cache_bin_preincrement(info, 1, mem, &cur_offset);
+	cache_bin_init(bin, info, mem, &cur_offset);
+	cache_bin_postincrement(info, 1, mem, &cur_offset);
+	assert_zu_eq(cur_offset, size, "Should use all requested memory");
+}
+
+TEST_BEGIN(test_cache_bin) {
+	const int ncached_max = 100;
+	bool success;
+	void *ptr;
+
+	cache_bin_info_t info;
+	cache_bin_info_init(&info, ncached_max);
+	cache_bin_t bin;
+	test_bin_init(&bin, &info);
+
+	/* Initialize to empty; should then have 0 elements. */
+	expect_d_eq(ncached_max, cache_bin_info_ncached_max(&info), "");
+	expect_true(cache_bin_ncached_get_local(&bin, &info) == 0, "");
+	expect_true(cache_bin_low_water_get(&bin, &info) == 0, "");
+
+	ptr = cache_bin_alloc_easy(&bin, &success);
+	expect_false(success, "Shouldn't successfully allocate when empty");
+	expect_ptr_null(ptr, "Shouldn't get a non-null pointer on failure");
+
+	ptr = cache_bin_alloc(&bin, &success);
+	expect_false(success, "Shouldn't successfully allocate when empty");
+	expect_ptr_null(ptr, "Shouldn't get a non-null pointer on failure");
+
+	/*
+	 * We allocate one more item than ncached_max, so we can test cache bin
+	 * exhaustion.
+	 */
+	void **ptrs = mallocx(sizeof(void *) * (ncached_max + 1), 0);
+	assert_ptr_not_null(ptrs, "Unexpected mallocx failure");
+	for  (cache_bin_sz_t i = 0; i < ncached_max; i++) {
+		expect_true(cache_bin_ncached_get_local(&bin, &info) == i, "");
+		success = cache_bin_dalloc_easy(&bin, &ptrs[i]);
+		expect_true(success,
+		    "Should be able to dalloc into a non-full cache bin.");
+		expect_true(cache_bin_low_water_get(&bin, &info) == 0,
+		    "Pushes and pops shouldn't change low water of zero.");
+	}
+	expect_true(cache_bin_ncached_get_local(&bin, &info) == ncached_max,
+	    "");
+	success = cache_bin_dalloc_easy(&bin, &ptrs[ncached_max]);
+	expect_false(success, "Shouldn't be able to dalloc into a full bin.");
+
+	cache_bin_low_water_set(&bin);
+
+	for (cache_bin_sz_t i = 0; i < ncached_max; i++) {
+		expect_true(cache_bin_low_water_get(&bin, &info)
+		    == ncached_max - i, "");
+		expect_true(cache_bin_ncached_get_local(&bin, &info)
+		    == ncached_max - i, "");
+		/*
+		 * This should fail -- the easy variant can't change the low
+		 * water mark.
+		 */
+		ptr = cache_bin_alloc_easy(&bin, &success);
+		expect_ptr_null(ptr, "");
+		expect_false(success, "");
+		expect_true(cache_bin_low_water_get(&bin, &info)
+		    == ncached_max - i, "");
+		expect_true(cache_bin_ncached_get_local(&bin, &info)
+		    == ncached_max - i, "");
+
+		/* This should succeed, though. */
+		ptr = cache_bin_alloc(&bin, &success);
+		expect_true(success, "");
+		expect_ptr_eq(ptr, &ptrs[ncached_max - i - 1],
+		    "Alloc should pop in stack order");
+		expect_true(cache_bin_low_water_get(&bin, &info)
+		    == ncached_max - i - 1, "");
+		expect_true(cache_bin_ncached_get_local(&bin, &info)
+		    == ncached_max - i - 1, "");
+	}
+	/* Now we're empty -- all alloc attempts should fail. */
+	expect_true(cache_bin_ncached_get_local(&bin, &info) == 0, "");
+	ptr = cache_bin_alloc_easy(&bin, &success);
+	expect_ptr_null(ptr, "");
+	expect_false(success, "");
+	ptr = cache_bin_alloc(&bin, &success);
+	expect_ptr_null(ptr, "");
+	expect_false(success, "");
+
+	for (cache_bin_sz_t i = 0; i < ncached_max / 2; i++) {
+		cache_bin_dalloc_easy(&bin, &ptrs[i]);
+	}
+	cache_bin_low_water_set(&bin);
+
+	for (cache_bin_sz_t i = ncached_max / 2; i < ncached_max; i++) {
+		cache_bin_dalloc_easy(&bin, &ptrs[i]);
+	}
+	expect_true(cache_bin_ncached_get_local(&bin, &info) == ncached_max,
+	    "");
+	for (cache_bin_sz_t i = ncached_max - 1; i >= ncached_max / 2; i--) {
+		/*
+		 * Size is bigger than low water -- the reduced version should
+		 * succeed.
+		 */
+		ptr = cache_bin_alloc_easy(&bin, &success);
+		expect_true(success, "");
+		expect_ptr_eq(ptr, &ptrs[i], "");
+	}
+	/* But now, we've hit low-water. */
+	ptr = cache_bin_alloc_easy(&bin, &success);
+	expect_false(success, "");
+	expect_ptr_null(ptr, "");
+
+	/* We're going to test filling -- we must be empty to start. */
+	while (cache_bin_ncached_get_local(&bin, &info)) {
+		cache_bin_alloc(&bin, &success);
+		expect_true(success, "");
+	}
+
+	/* Test fill. */
+	/* Try to fill all, succeed fully. */
+	do_fill_test(&bin, &info, ptrs, ncached_max, ncached_max, ncached_max);
+	/* Try to fill all, succeed partially. */
+	do_fill_test(&bin, &info, ptrs, ncached_max, ncached_max,
+	    ncached_max / 2);
+	/* Try to fill all, fail completely. */
+	do_fill_test(&bin, &info, ptrs, ncached_max, ncached_max, 0);
+
+	/* Try to fill some, succeed fully. */
+	do_fill_test(&bin, &info, ptrs, ncached_max, ncached_max / 2,
+	    ncached_max / 2);
+	/* Try to fill some, succeed partially. */
+	do_fill_test(&bin, &info, ptrs, ncached_max, ncached_max / 2,
+	    ncached_max / 4);
+	/* Try to fill some, fail completely. */
+	do_fill_test(&bin, &info, ptrs, ncached_max, ncached_max / 2, 0);
+
+	do_flush_test(&bin, &info, ptrs, ncached_max, ncached_max);
+	do_flush_test(&bin, &info, ptrs, ncached_max, ncached_max / 2);
+	do_flush_test(&bin, &info, ptrs, ncached_max, 0);
+	do_flush_test(&bin, &info, ptrs, ncached_max / 2, ncached_max / 2);
+	do_flush_test(&bin, &info, ptrs, ncached_max / 2, ncached_max / 4);
+	do_flush_test(&bin, &info, ptrs, ncached_max / 2, 0);
+
+	do_batch_alloc_test(&bin, &info, ptrs, ncached_max, ncached_max);
+	do_batch_alloc_test(&bin, &info, ptrs, ncached_max, ncached_max * 2);
+	do_batch_alloc_test(&bin, &info, ptrs, ncached_max, ncached_max / 2);
+	do_batch_alloc_test(&bin, &info, ptrs, ncached_max, 2);
+	do_batch_alloc_test(&bin, &info, ptrs, ncached_max, 1);
+	do_batch_alloc_test(&bin, &info, ptrs, ncached_max, 0);
+	do_batch_alloc_test(&bin, &info, ptrs, ncached_max / 2,
+	    ncached_max / 2);
+	do_batch_alloc_test(&bin, &info, ptrs, ncached_max / 2, ncached_max);
+	do_batch_alloc_test(&bin, &info, ptrs, ncached_max / 2,
+	    ncached_max / 4);
+	do_batch_alloc_test(&bin, &info, ptrs, ncached_max / 2, 2);
+	do_batch_alloc_test(&bin, &info, ptrs, ncached_max / 2, 1);
+	do_batch_alloc_test(&bin, &info, ptrs, ncached_max / 2, 0);
+	do_batch_alloc_test(&bin, &info, ptrs, 2, ncached_max);
+	do_batch_alloc_test(&bin, &info, ptrs, 2, 2);
+	do_batch_alloc_test(&bin, &info, ptrs, 2, 1);
+	do_batch_alloc_test(&bin, &info, ptrs, 2, 0);
+	do_batch_alloc_test(&bin, &info, ptrs, 1, 2);
+	do_batch_alloc_test(&bin, &info, ptrs, 1, 1);
+	do_batch_alloc_test(&bin, &info, ptrs, 1, 0);
+	do_batch_alloc_test(&bin, &info, ptrs, 0, 2);
+	do_batch_alloc_test(&bin, &info, ptrs, 0, 1);
+	do_batch_alloc_test(&bin, &info, ptrs, 0, 0);
+
+	free(ptrs);
+}
+TEST_END
+
+static void
+do_flush_stashed_test(cache_bin_t *bin, cache_bin_info_t *info, void **ptrs,
+    cache_bin_sz_t nfill, cache_bin_sz_t nstash) {
+	expect_true(cache_bin_ncached_get_local(bin, info) == 0,
+	    "Bin not empty");
+	expect_true(cache_bin_nstashed_get_local(bin, info) == 0,
+	    "Bin not empty");
+	expect_true(nfill + nstash <= info->ncached_max, "Exceeded max");
+
+	bool ret;
+	/* Fill */
+	for (cache_bin_sz_t i = 0; i < nfill; i++) {
+		ret = cache_bin_dalloc_easy(bin, &ptrs[i]);
+		expect_true(ret, "Unexpected fill failure");
+	}
+	expect_true(cache_bin_ncached_get_local(bin, info) == nfill,
+	    "Wrong cached count");
+
+	/* Stash */
+	for (cache_bin_sz_t i = 0; i < nstash; i++) {
+		ret = cache_bin_stash(bin, &ptrs[i + nfill]);
+		expect_true(ret, "Unexpected stash failure");
+	}
+	expect_true(cache_bin_nstashed_get_local(bin, info) == nstash,
+	    "Wrong stashed count");
+
+	if (nfill + nstash == info->ncached_max) {
+		ret = cache_bin_dalloc_easy(bin, &ptrs[0]);
+		expect_false(ret, "Should not dalloc into a full bin");
+		ret = cache_bin_stash(bin, &ptrs[0]);
+		expect_false(ret, "Should not stash into a full bin");
+	}
+
+	/* Alloc filled ones */
+	for (cache_bin_sz_t i = 0; i < nfill; i++) {
+		void *ptr = cache_bin_alloc(bin, &ret);
+		expect_true(ret, "Unexpected alloc failure");
+		/* Verify it's not from the stashed range. */
+		expect_true((uintptr_t)ptr < (uintptr_t)&ptrs[nfill],
+		    "Should not alloc stashed ptrs");
+	}
+	expect_true(cache_bin_ncached_get_local(bin, info) == 0,
+	    "Wrong cached count");
+	expect_true(cache_bin_nstashed_get_local(bin, info) == nstash,
+	    "Wrong stashed count");
+
+	cache_bin_alloc(bin, &ret);
+	expect_false(ret, "Should not alloc stashed");
+
+	/* Clear stashed ones */
+	cache_bin_finish_flush_stashed(bin, info);
+	expect_true(cache_bin_ncached_get_local(bin, info) == 0,
+	    "Wrong cached count");
+	expect_true(cache_bin_nstashed_get_local(bin, info) == 0,
+	    "Wrong stashed count");
+
+	cache_bin_alloc(bin, &ret);
+	expect_false(ret, "Should not alloc from empty bin");
+}
+
+TEST_BEGIN(test_cache_bin_stash) {
+	const int ncached_max = 100;
+
+	cache_bin_t bin;
+	cache_bin_info_t info;
+	cache_bin_info_init(&info, ncached_max);
+	test_bin_init(&bin, &info);
+
+	/*
+	 * The content of this array is not accessed; instead the interior
+	 * addresses are used to insert / stash into the bins as test pointers.
+	 */
+	void **ptrs = mallocx(sizeof(void *) * (ncached_max + 1), 0);
+	assert_ptr_not_null(ptrs, "Unexpected mallocx failure");
+	bool ret;
+	for (cache_bin_sz_t i = 0; i < ncached_max; i++) {
+		expect_true(cache_bin_ncached_get_local(&bin, &info) ==
+		    (i / 2 + i % 2), "Wrong ncached value");
+		expect_true(cache_bin_nstashed_get_local(&bin, &info) == i / 2,
+		    "Wrong nstashed value");
+		if (i % 2 == 0) {
+			cache_bin_dalloc_easy(&bin, &ptrs[i]);
+		} else {
+			ret = cache_bin_stash(&bin, &ptrs[i]);
+			expect_true(ret, "Should be able to stash into a "
+			    "non-full cache bin");
+		}
+	}
+	ret = cache_bin_dalloc_easy(&bin, &ptrs[0]);
+	expect_false(ret, "Should not dalloc into a full cache bin");
+	ret = cache_bin_stash(&bin, &ptrs[0]);
+	expect_false(ret, "Should not stash into a full cache bin");
+	for (cache_bin_sz_t i = 0; i < ncached_max; i++) {
+		void *ptr = cache_bin_alloc(&bin, &ret);
+		if (i < ncached_max / 2) {
+			expect_true(ret, "Should be able to alloc");
+			uintptr_t diff = ((uintptr_t)ptr - (uintptr_t)&ptrs[0])
+			    / sizeof(void *);
+			expect_true(diff % 2 == 0, "Should be able to alloc");
+		} else {
+			expect_false(ret, "Should not alloc stashed");
+			expect_true(cache_bin_nstashed_get_local(&bin, &info) ==
+			    ncached_max / 2, "Wrong nstashed value");
+		}
+	}
+
+	test_bin_init(&bin, &info);
+	do_flush_stashed_test(&bin, &info, ptrs, ncached_max, 0);
+	do_flush_stashed_test(&bin, &info, ptrs, 0, ncached_max);
+	do_flush_stashed_test(&bin, &info, ptrs, ncached_max / 2, ncached_max / 2);
+	do_flush_stashed_test(&bin, &info, ptrs, ncached_max / 4, ncached_max / 2);
+	do_flush_stashed_test(&bin, &info, ptrs, ncached_max / 2, ncached_max / 4);
+	do_flush_stashed_test(&bin, &info, ptrs, ncached_max / 4, ncached_max / 4);
+}
+TEST_END
+
+int
+main(void) {
+	return test(test_cache_bin,
+		test_cache_bin_stash);
+}
diff --git a/deps/jemalloc/test/unit/ckh.c b/deps/jemalloc/test/unit/ckh.c
new file mode 100644
index 0000000..36142ac
--- /dev/null
+++ b/deps/jemalloc/test/unit/ckh.c
@@ -0,0 +1,211 @@
+#include "test/jemalloc_test.h"
+
+TEST_BEGIN(test_new_delete) {
+	tsd_t *tsd;
+	ckh_t ckh;
+
+	tsd = tsd_fetch();
+
+	expect_false(ckh_new(tsd, &ckh, 2, ckh_string_hash,
+	    ckh_string_keycomp), "Unexpected ckh_new() error");
+	ckh_delete(tsd, &ckh);
+
+	expect_false(ckh_new(tsd, &ckh, 3, ckh_pointer_hash,
+	    ckh_pointer_keycomp), "Unexpected ckh_new() error");
+	ckh_delete(tsd, &ckh);
+}
+TEST_END
+
+TEST_BEGIN(test_count_insert_search_remove) {
+	tsd_t *tsd;
+	ckh_t ckh;
+	const char *strs[] = {
+	    "a string",
+	    "A string",
+	    "a string.",
+	    "A string."
+	};
+	const char *missing = "A string not in the hash table.";
+	size_t i;
+
+	tsd = tsd_fetch();
+
+	expect_false(ckh_new(tsd, &ckh, 2, ckh_string_hash,
+	    ckh_string_keycomp), "Unexpected ckh_new() error");
+	expect_zu_eq(ckh_count(&ckh), 0,
+	    "ckh_count() should return %zu, but it returned %zu", ZU(0),
+	    ckh_count(&ckh));
+
+	/* Insert. */
+	for (i = 0; i < sizeof(strs)/sizeof(const char *); i++) {
+		ckh_insert(tsd, &ckh, strs[i], strs[i]);
+		expect_zu_eq(ckh_count(&ckh), i+1,
+		    "ckh_count() should return %zu, but it returned %zu", i+1,
+		    ckh_count(&ckh));
+	}
+
+	/* Search. */
+	for (i = 0; i < sizeof(strs)/sizeof(const char *); i++) {
+		union {
+			void *p;
+			const char *s;
+		} k, v;
+		void **kp, **vp;
+		const char *ks, *vs;
+
+		kp = (i & 1) ? &k.p : NULL;
+		vp = (i & 2) ? &v.p : NULL;
+		k.p = NULL;
+		v.p = NULL;
+		expect_false(ckh_search(&ckh, strs[i], kp, vp),
+		    "Unexpected ckh_search() error");
+
+		ks = (i & 1) ? strs[i] : (const char *)NULL;
+		vs = (i & 2) ? strs[i] : (const char *)NULL;
+		expect_ptr_eq((void *)ks, (void *)k.s, "Key mismatch, i=%zu",
+		    i);
+		expect_ptr_eq((void *)vs, (void *)v.s, "Value mismatch, i=%zu",
+		    i);
+	}
+	expect_true(ckh_search(&ckh, missing, NULL, NULL),
+	    "Unexpected ckh_search() success");
+
+	/* Remove. */
+	for (i = 0; i < sizeof(strs)/sizeof(const char *); i++) {
+		union {
+			void *p;
+			const char *s;
+		} k, v;
+		void **kp, **vp;
+		const char *ks, *vs;
+
+		kp = (i & 1) ? &k.p : NULL;
+		vp = (i & 2) ? &v.p : NULL;
+		k.p = NULL;
+		v.p = NULL;
+		expect_false(ckh_remove(tsd, &ckh, strs[i], kp, vp),
+		    "Unexpected ckh_remove() error");
+
+		ks = (i & 1) ? strs[i] : (const char *)NULL;
+		vs = (i & 2) ? strs[i] : (const char *)NULL;
+		expect_ptr_eq((void *)ks, (void *)k.s, "Key mismatch, i=%zu",
+		    i);
+		expect_ptr_eq((void *)vs, (void *)v.s, "Value mismatch, i=%zu",
+		    i);
+		expect_zu_eq(ckh_count(&ckh),
+		    sizeof(strs)/sizeof(const char *) - i - 1,
+		    "ckh_count() should return %zu, but it returned %zu",
+		        sizeof(strs)/sizeof(const char *) - i - 1,
+		    ckh_count(&ckh));
+	}
+
+	ckh_delete(tsd, &ckh);
+}
+TEST_END
+
+TEST_BEGIN(test_insert_iter_remove) {
+#define NITEMS ZU(1000)
+	tsd_t *tsd;
+	ckh_t ckh;
+	void **p[NITEMS];
+	void *q, *r;
+	size_t i;
+
+	tsd = tsd_fetch();
+
+	expect_false(ckh_new(tsd, &ckh, 2, ckh_pointer_hash,
+	    ckh_pointer_keycomp), "Unexpected ckh_new() error");
+
+	for (i = 0; i < NITEMS; i++) {
+		p[i] = mallocx(i+1, 0);
+		expect_ptr_not_null(p[i], "Unexpected mallocx() failure");
+	}
+
+	for (i = 0; i < NITEMS; i++) {
+		size_t j;
+
+		for (j = i; j < NITEMS; j++) {
+			expect_false(ckh_insert(tsd, &ckh, p[j], p[j]),
+			    "Unexpected ckh_insert() failure");
+			expect_false(ckh_search(&ckh, p[j], &q, &r),
+			    "Unexpected ckh_search() failure");
+			expect_ptr_eq(p[j], q, "Key pointer mismatch");
+			expect_ptr_eq(p[j], r, "Value pointer mismatch");
+		}
+
+		expect_zu_eq(ckh_count(&ckh), NITEMS,
+		    "ckh_count() should return %zu, but it returned %zu",
+		    NITEMS, ckh_count(&ckh));
+
+		for (j = i + 1; j < NITEMS; j++) {
+			expect_false(ckh_search(&ckh, p[j], NULL, NULL),
+			    "Unexpected ckh_search() failure");
+			expect_false(ckh_remove(tsd, &ckh, p[j], &q, &r),
+			    "Unexpected ckh_remove() failure");
+			expect_ptr_eq(p[j], q, "Key pointer mismatch");
+			expect_ptr_eq(p[j], r, "Value pointer mismatch");
+			expect_true(ckh_search(&ckh, p[j], NULL, NULL),
+			    "Unexpected ckh_search() success");
+			expect_true(ckh_remove(tsd, &ckh, p[j], &q, &r),
+			    "Unexpected ckh_remove() success");
+		}
+
+		{
+			bool seen[NITEMS];
+			size_t tabind;
+
+			memset(seen, 0, sizeof(seen));
+
+			for (tabind = 0; !ckh_iter(&ckh, &tabind, &q, &r);) {
+				size_t k;
+
+				expect_ptr_eq(q, r, "Key and val not equal");
+
+				for (k = 0; k < NITEMS; k++) {
+					if (p[k] == q) {
+						expect_false(seen[k],
+						    "Item %zu already seen", k);
+						seen[k] = true;
+						break;
+					}
+				}
+			}
+
+			for (j = 0; j < i + 1; j++) {
+				expect_true(seen[j], "Item %zu not seen", j);
+			}
+			for (; j < NITEMS; j++) {
+				expect_false(seen[j], "Item %zu seen", j);
+			}
+		}
+	}
+
+	for (i = 0; i < NITEMS; i++) {
+		expect_false(ckh_search(&ckh, p[i], NULL, NULL),
+		    "Unexpected ckh_search() failure");
+		expect_false(ckh_remove(tsd, &ckh, p[i], &q, &r),
+		    "Unexpected ckh_remove() failure");
+		expect_ptr_eq(p[i], q, "Key pointer mismatch");
+		expect_ptr_eq(p[i], r, "Value pointer mismatch");
+		expect_true(ckh_search(&ckh, p[i], NULL, NULL),
+		    "Unexpected ckh_search() success");
+		expect_true(ckh_remove(tsd, &ckh, p[i], &q, &r),
+		    "Unexpected ckh_remove() success");
+		dallocx(p[i], 0);
+	}
+
+	expect_zu_eq(ckh_count(&ckh), 0,
+	    "ckh_count() should return %zu, but it returned %zu",
+	    ZU(0), ckh_count(&ckh));
+	ckh_delete(tsd, &ckh);
+#undef NITEMS
+}
+TEST_END
+
+int
+main(void) {
+	return test(
+	    test_new_delete,
+	    test_count_insert_search_remove,
+	    test_insert_iter_remove);
+}
diff --git a/deps/jemalloc/test/unit/counter.c b/deps/jemalloc/test/unit/counter.c
new file mode 100644
index 0000000..277baac
--- /dev/null
+++ b/deps/jemalloc/test/unit/counter.c
@@ -0,0 +1,80 @@
+#include "test/jemalloc_test.h"
+
+static const uint64_t interval = 1 << 20;
+
+TEST_BEGIN(test_counter_accum) {
+	uint64_t increment = interval >> 4;
+	unsigned n = interval / increment;
+	uint64_t accum = 0;
+
+	counter_accum_t c;
+	counter_accum_init(&c, interval);
+
+	tsd_t *tsd = tsd_fetch();
+	bool trigger;
+	for (unsigned i = 0; i < n; i++) {
+		trigger = counter_accum(tsd_tsdn(tsd), &c, increment);
+		accum += increment;
+		if (accum < interval) {
+			expect_b_eq(trigger, false, "Should not trigger");
+		} else {
+			expect_b_eq(trigger, true, "Should have triggered");
+		}
+	}
+	expect_b_eq(trigger, true, "Should have triggered");
+}
+TEST_END
+
+void
+expect_counter_value(counter_accum_t *c, uint64_t v) {
+	uint64_t accum = locked_read_u64_unsynchronized(&c->accumbytes);
+	expect_u64_eq(accum, v, "Counter value mismatch");
+}
+
+#define N_THDS (16)
+#define N_ITER_THD (1 << 12)
+#define ITER_INCREMENT (interval >> 4)
+
+static void *
+thd_start(void *varg) {
+	counter_accum_t *c = (counter_accum_t *)varg;
+
+	tsd_t *tsd = tsd_fetch();
+	bool trigger;
+	uintptr_t n_triggered = 0;
+	for (unsigned i = 0; i < N_ITER_THD; i++) {
+		trigger = counter_accum(tsd_tsdn(tsd), c, ITER_INCREMENT);
+		n_triggered += trigger ? 1 : 0;
+	}
+
+	return (void *)n_triggered;
+}
+
+
+TEST_BEGIN(test_counter_mt) {
+	counter_accum_t shared_c;
+	counter_accum_init(&shared_c, interval);
+
+	thd_t thds[N_THDS];
+	unsigned i;
+	for (i = 0; i < N_THDS; i++) {
+		thd_create(&thds[i], thd_start, (void *)&shared_c);
+	}
+
+	uint64_t sum = 0;
+	for (i = 0; i < N_THDS; i++) {
+		void *ret;
+		thd_join(thds[i], &ret);
+		sum += (uintptr_t)ret;
+	}
+	expect_u64_eq(sum, N_THDS * N_ITER_THD / (interval / ITER_INCREMENT),
+	    "Incorrect number of triggers");
+}
+TEST_END
+
+int
+main(void) {
+	return test(
+	    test_counter_accum,
+	    test_counter_mt);
+}
diff --git a/deps/jemalloc/test/unit/decay.c b/deps/jemalloc/test/unit/decay.c
new file mode 100644
index 0000000..bdb6d0a
--- /dev/null
+++ b/deps/jemalloc/test/unit/decay.c
@@ -0,0 +1,283 @@
+#include "test/jemalloc_test.h"
+
+#include "jemalloc/internal/decay.h"
+
+TEST_BEGIN(test_decay_init) {
+	decay_t decay;
+	memset(&decay, 0, sizeof(decay));
+
+	nstime_t curtime;
+	nstime_init(&curtime, 0);
+
+	ssize_t decay_ms = 1000;
+	assert_true(decay_ms_valid(decay_ms), "");
+
+	expect_false(decay_init(&decay, &curtime, decay_ms),
+	    "Failed to initialize decay");
+	expect_zd_eq(decay_ms_read(&decay), decay_ms,
+	    "Decay_ms was initialized incorrectly");
+	expect_u64_ne(decay_epoch_duration_ns(&decay), 0,
+	    "Epoch duration was initialized incorrectly");
+}
+TEST_END
+
+TEST_BEGIN(test_decay_ms_valid) {
+	expect_false(decay_ms_valid(-7),
+	    "Misclassified negative decay as valid");
+	expect_true(decay_ms_valid(-1),
+	    "Misclassified -1 (never decay) as invalid decay");
+	expect_true(decay_ms_valid(8943),
+	    "Misclassified valid decay");
+	if (SSIZE_MAX > NSTIME_SEC_MAX) {
+		expect_false(
+		    decay_ms_valid((ssize_t)(NSTIME_SEC_MAX * KQU(1000) + 39)),
+		    "Misclassified too large decay");
+	}
+}
+TEST_END
+
+TEST_BEGIN(test_decay_npages_purge_in) {
+	decay_t decay;
+	memset(&decay, 0, sizeof(decay));
+
+	nstime_t curtime;
+	nstime_init(&curtime, 0);
+
+	uint64_t decay_ms = 1000;
+	nstime_t decay_nstime;
+	nstime_init(&decay_nstime, decay_ms * 1000 * 1000);
+	expect_false(decay_init(&decay, &curtime, (ssize_t)decay_ms),
+	    "Failed to initialize decay");
+
+	size_t new_pages = 100;
+
+	nstime_t time;
+	nstime_copy(&time, &decay_nstime);
+	expect_u64_eq(decay_npages_purge_in(&decay, &time, new_pages),
+	    new_pages, "Not all pages are expected to decay in decay_ms");
+
+	nstime_init(&time, 0);
+	expect_u64_eq(decay_npages_purge_in(&decay, &time, new_pages), 0,
+	    "More than zero pages are expected to instantly decay");
+
+	nstime_copy(&time, &decay_nstime);
+	nstime_idivide(&time, 2);
+	expect_u64_eq(decay_npages_purge_in(&decay, &time, new_pages),
+	    new_pages / 2, "Not half of pages decay in half the decay period");
+}
+TEST_END
+
+TEST_BEGIN(test_decay_maybe_advance_epoch) {
+	decay_t decay;
+	memset(&decay, 0, sizeof(decay));
+
+	nstime_t curtime;
+	nstime_init(&curtime, 0);
+
+	uint64_t decay_ms = 1000;
+
+	bool err = decay_init(&decay, &curtime, (ssize_t)decay_ms);
+	expect_false(err, "");
+
+	bool advanced;
+	advanced = decay_maybe_advance_epoch(&decay, &curtime, 0);
+	expect_false(advanced, "Epoch advanced while time didn't");
+
+	nstime_t interval;
+	nstime_init(&interval, decay_epoch_duration_ns(&decay));
+
+	nstime_add(&curtime, &interval);
+	advanced = decay_maybe_advance_epoch(&decay, &curtime, 0);
+	expect_false(advanced, "Epoch advanced after first interval");
+
+	nstime_add(&curtime, &interval);
+	advanced = decay_maybe_advance_epoch(&decay, &curtime, 0);
+	expect_true(advanced, "Epoch didn't advance after two intervals");
+}
+TEST_END
+
+TEST_BEGIN(test_decay_empty) {
+	/* If we never have any decaying pages, npages_limit should be 0. */
+	decay_t decay;
+	memset(&decay, 0, sizeof(decay));
+
+	nstime_t curtime;
+	nstime_init(&curtime, 0);
+
+	uint64_t decay_ms = 1000;
+	uint64_t decay_ns = decay_ms * 1000 * 1000;
+
+	bool err = decay_init(&decay, &curtime, (ssize_t)decay_ms);
+	assert_false(err, "");
+
+	uint64_t time_between_calls = decay_epoch_duration_ns(&decay) / 5;
+	int nepochs = 0;
+	for (uint64_t i = 0; i < decay_ns / time_between_calls * 10; i++) {
+		size_t dirty_pages = 0;
+		nstime_init(&curtime, i * time_between_calls);
+		bool epoch_advanced = decay_maybe_advance_epoch(&decay,
+		    &curtime, dirty_pages);
+		if (epoch_advanced) {
+			nepochs++;
+			expect_zu_eq(decay_npages_limit_get(&decay), 0,
+			    "Unexpectedly increased npages_limit");
+		}
+	}
+	expect_d_gt(nepochs, 0, "Epochs never advanced");
+}
+TEST_END
+
+/*
+ * Verify that npages_limit correctly decays as the time goes.
+ *
+ * During first 'nepoch_init' epochs, add new dirty pages.
+ * After that, let them decay and verify npages_limit decreases.
+ * Then proceed with another 'nepoch_init' epochs and check that
+ * all dirty pages are flushed out of backlog, bringing npages_limit
+ * down to zero.
+ */
+TEST_BEGIN(test_decay) {
+	const uint64_t nepoch_init = 10;
+
+	decay_t decay;
+	memset(&decay, 0, sizeof(decay));
+
+	nstime_t curtime;
+	nstime_init(&curtime, 0);
+
+	uint64_t decay_ms = 1000;
+	uint64_t decay_ns = decay_ms * 1000 * 1000;
+
+	bool err = decay_init(&decay, &curtime, (ssize_t)decay_ms);
+	assert_false(err, "");
+
+	expect_zu_eq(decay_npages_limit_get(&decay), 0,
+	    "Empty decay returned nonzero npages_limit");
+
+	nstime_t epochtime;
+	nstime_init(&epochtime, decay_epoch_duration_ns(&decay));
+
+	const size_t dirty_pages_per_epoch = 1000;
+	size_t dirty_pages = 0;
+	uint64_t epoch_ns = decay_epoch_duration_ns(&decay);
+	bool epoch_advanced = false;
+
+	/* Populate backlog with some dirty pages */
+	for (uint64_t i = 0; i < nepoch_init; i++) {
+		nstime_add(&curtime, &epochtime);
+		dirty_pages += dirty_pages_per_epoch;
+		epoch_advanced |= decay_maybe_advance_epoch(&decay, &curtime,
+		    dirty_pages);
+	}
+	expect_true(epoch_advanced, "Epoch never advanced");
+
+	size_t npages_limit = decay_npages_limit_get(&decay);
+	expect_zu_gt(npages_limit, 0, "npages_limit is incorrectly equal "
+	    "to zero after dirty pages have been added");
+
+	/* Keep dirty pages unchanged and verify that npages_limit decreases */
+	for (uint64_t i = nepoch_init; i * epoch_ns < decay_ns; ++i) {
+		nstime_add(&curtime, &epochtime);
+		epoch_advanced = decay_maybe_advance_epoch(&decay, &curtime,
+				    dirty_pages);
+		if (epoch_advanced) {
+			size_t npages_limit_new = decay_npages_limit_get(&decay);
+			expect_zu_lt(npages_limit_new, npages_limit,
+			    "napges_limit failed to decay");
+
+			npages_limit = npages_limit_new;
+		}
+	}
+
+	expect_zu_gt(npages_limit, 0, "npages_limit decayed to zero earlier "
+	    "than decay_ms since last dirty page was added");
+
+	/* Completely push all dirty pages out of the backlog */
+	epoch_advanced = false;
+	for (uint64_t i = 0; i < nepoch_init; i++) {
+		nstime_add(&curtime, &epochtime);
+		epoch_advanced |= decay_maybe_advance_epoch(&decay, &curtime,
+		    dirty_pages);
+	}
+	expect_true(epoch_advanced, "Epoch never advanced");
+
+	npages_limit = decay_npages_limit_get(&decay);
+	expect_zu_eq(npages_limit, 0, "npages_limit didn't decay to 0 after "
+	    "decay_ms since last bump in dirty pages");
+}
+TEST_END
+
+TEST_BEGIN(test_decay_ns_until_purge) {
+	const uint64_t nepoch_init = 10;
+
+	decay_t decay;
+	memset(&decay, 0, sizeof(decay));
+
+	nstime_t curtime;
+	nstime_init(&curtime, 0);
+
+	uint64_t decay_ms = 1000;
+	uint64_t decay_ns = decay_ms * 1000 * 1000;
+
+	bool err = decay_init(&decay, &curtime, (ssize_t)decay_ms);
+	assert_false(err, "");
+
+	nstime_t epochtime;
+	nstime_init(&epochtime, decay_epoch_duration_ns(&decay));
+
+	uint64_t ns_until_purge_empty = decay_ns_until_purge(&decay, 0, 0);
+	expect_u64_eq(ns_until_purge_empty, DECAY_UNBOUNDED_TIME_TO_PURGE,
+	    "Failed to return unbounded wait time for zero threshold");
+
+	const size_t dirty_pages_per_epoch = 1000;
+	size_t dirty_pages = 0;
+	bool epoch_advanced = false;
+	for (uint64_t i = 0; i < nepoch_init; i++) {
+		nstime_add(&curtime, &epochtime);
+		dirty_pages += dirty_pages_per_epoch;
+		epoch_advanced |= decay_maybe_advance_epoch(&decay, &curtime,
+		    dirty_pages);
+	}
+	expect_true(epoch_advanced, "Epoch never advanced");
+
+	uint64_t ns_until_purge_all = decay_ns_until_purge(&decay,
+	    dirty_pages, dirty_pages);
+	expect_u64_ge(ns_until_purge_all, decay_ns,
+	    "Incorrectly calculated time to purge all pages");
+
+	uint64_t ns_until_purge_none = decay_ns_until_purge(&decay,
+	    dirty_pages, 0);
+	expect_u64_eq(ns_until_purge_none, decay_epoch_duration_ns(&decay) * 2,
+	    "Incorrectly calculated time to purge 0 pages");
+
+	uint64_t npages_threshold = dirty_pages / 2;
+	uint64_t ns_until_purge_half = decay_ns_until_purge(&decay,
+	    dirty_pages, npages_threshold);
+
+	nstime_t waittime;
+	nstime_init(&waittime, ns_until_purge_half);
+	nstime_add(&curtime, &waittime);
+
+	decay_maybe_advance_epoch(&decay, &curtime, dirty_pages);
+	size_t npages_limit = decay_npages_limit_get(&decay);
+	expect_zu_lt(npages_limit, dirty_pages,
+	    "npages_limit failed to decrease after waiting");
+	size_t expected = dirty_pages - npages_limit;
+	int deviation = abs((int)expected - (int)(npages_threshold));
+	expect_d_lt(deviation, (int)(npages_threshold / 2),
+	    "After waiting, number of pages is out of the expected interval "
+	    "[0.5 * npages_threshold .. 1.5 * npages_threshold]");
+}
+TEST_END
+
+int
+main(void) {
+	return test(
+	    test_decay_init,
+	    test_decay_ms_valid,
+	    test_decay_npages_purge_in,
+	    test_decay_maybe_advance_epoch,
+	    test_decay_empty,
+	    test_decay,
+	    test_decay_ns_until_purge);
+}
diff --git a/deps/jemalloc/test/unit/div.c b/deps/jemalloc/test/unit/div.c
new file mode 100644
index 0000000..29aea66
--- /dev/null
+++ b/deps/jemalloc/test/unit/div.c
@@ -0,0 +1,29 @@
+#include "test/jemalloc_test.h"
+
+#include "jemalloc/internal/div.h"
+
+TEST_BEGIN(test_div_exhaustive) {
+	for (size_t divisor = 2; divisor < 1000 * 1000; ++divisor) {
+		div_info_t div_info;
+		div_init(&div_info, divisor);
+		size_t max = 1000 * divisor;
+		if (max < 1000 * 1000) {
+			max = 1000 * 1000;
+		}
+		for (size_t dividend = 0; dividend < 1000 * divisor;
+		    dividend += divisor) {
+			size_t quotient = div_compute(
+			    &div_info, dividend);
+			expect_zu_eq(dividend, quotient * divisor,
+			    "With divisor = %zu, dividend = %zu, "
+			    "got quotient %zu", divisor, dividend, quotient);
+		}
+	}
+}
+TEST_END
+
+int
+main(void) {
+	return test_no_reentrancy(
+	    test_div_exhaustive);
+}
diff --git a/deps/jemalloc/test/unit/double_free.c b/deps/jemalloc/test/unit/double_free.c
new file mode 100644
index 0000000..12122c1
--- /dev/null
+++ b/deps/jemalloc/test/unit/double_free.c
@@ -0,0 +1,77 @@
+#include "test/jemalloc_test.h"
+#include "test/san.h"
+
+#include "jemalloc/internal/safety_check.h"
+
+bool fake_abort_called;
+void fake_abort(const char *message) {
+	(void)message;
+	fake_abort_called = true;
+}
+
+void
+test_large_double_free_pre(void) {
+	safety_check_set_abort(&fake_abort);
+	fake_abort_called = false;
+}
+
+void
+test_large_double_free_post() {
+	expect_b_eq(fake_abort_called, true, "Double-free check didn't fire.");
+	safety_check_set_abort(NULL);
+}
+
+TEST_BEGIN(test_large_double_free_tcache) {
+	test_skip_if(!config_opt_safety_checks);
+	/*
+	 * Skip debug builds, since too many assertions will be triggered with
+	 * double-free before hitting the one we are interested in.
+	 */
+	test_skip_if(config_debug);
+
+	test_large_double_free_pre();
+	char *ptr = malloc(SC_LARGE_MINCLASS);
+	bool guarded = extent_is_guarded(tsdn_fetch(), ptr);
+	free(ptr);
+	if (!guarded) {
+		free(ptr);
+	} else {
+		/*
+		 * Skip because guarded extents may unguard immediately on
+		 * deallocation, in which case the second free will crash before
+		 * reaching the intended safety check.
+		 */
+		fake_abort_called = true;
+	}
+	mallctl("thread.tcache.flush", NULL, NULL, NULL, 0);
+	test_large_double_free_post();
+}
+TEST_END
+
+TEST_BEGIN(test_large_double_free_no_tcache) {
+	test_skip_if(!config_opt_safety_checks);
+	test_skip_if(config_debug);
+
+	test_large_double_free_pre();
+	char *ptr = mallocx(SC_LARGE_MINCLASS, MALLOCX_TCACHE_NONE);
+	bool guarded = extent_is_guarded(tsdn_fetch(), ptr);
+	dallocx(ptr, MALLOCX_TCACHE_NONE);
+	if (!guarded) {
+		dallocx(ptr, MALLOCX_TCACHE_NONE);
+	} else {
+		/*
+		 * Skip because guarded extents may unguard immediately on
+		 * deallocation, in which case the second free will crash before
+		 * reaching the intended safety check.
+		 */
+		fake_abort_called = true;
+	}
+	test_large_double_free_post();
+}
+TEST_END
+
+int
+main(void) {
+	return test(test_large_double_free_no_tcache,
+	    test_large_double_free_tcache);
+}
diff --git a/deps/jemalloc/test/unit/double_free.h b/deps/jemalloc/test/unit/double_free.h
new file mode 100644
index 0000000..8b13789
--- /dev/null
+++ b/deps/jemalloc/test/unit/double_free.h
@@ -0,0 +1 @@
+
diff --git a/deps/jemalloc/test/unit/edata_cache.c b/deps/jemalloc/test/unit/edata_cache.c
new file mode 100644
index 0000000..af1110a
--- /dev/null
+++ b/deps/jemalloc/test/unit/edata_cache.c
@@ -0,0 +1,226 @@
+#include "test/jemalloc_test.h"
+
+#include "jemalloc/internal/edata_cache.h"
+
+static void
+test_edata_cache_init(edata_cache_t *edata_cache) {
+	base_t *base = base_new(TSDN_NULL, /* ind */ 1,
+	    &ehooks_default_extent_hooks, /* metadata_use_hooks */ true);
+	assert_ptr_not_null(base, "");
+	bool err = edata_cache_init(edata_cache, base);
+	assert_false(err, "");
+}
+
+static void
+test_edata_cache_destroy(edata_cache_t *edata_cache) {
+	base_delete(TSDN_NULL, edata_cache->base);
+}
+
+TEST_BEGIN(test_edata_cache) {
+	edata_cache_t ec;
+	test_edata_cache_init(&ec);
+
+	/* Get one */
+	edata_t *ed1 = edata_cache_get(TSDN_NULL, &ec);
+	assert_ptr_not_null(ed1, "");
+
+	/* Cache should be empty */
+	assert_zu_eq(atomic_load_zu(&ec.count, ATOMIC_RELAXED), 0, "");
+
+	/* Get another */
+	edata_t *ed2 = edata_cache_get(TSDN_NULL, &ec);
+	assert_ptr_not_null(ed2, "");
+
+	/* Still empty */
+	assert_zu_eq(atomic_load_zu(&ec.count, ATOMIC_RELAXED), 0, "");
+
+	/* Put one back, and the cache should now have one item */
+	edata_cache_put(TSDN_NULL, &ec, ed1);
+	assert_zu_eq(atomic_load_zu(&ec.count, ATOMIC_RELAXED), 1, "");
+
+	/* Reallocating should reuse the item, and leave an empty cache. */
+	edata_t *ed1_again = edata_cache_get(TSDN_NULL, &ec);
+	assert_ptr_eq(ed1, ed1_again, "");
+	assert_zu_eq(atomic_load_zu(&ec.count, ATOMIC_RELAXED), 0, "");
+
+	test_edata_cache_destroy(&ec);
+}
+TEST_END
+
+static size_t
+ecf_count(edata_cache_fast_t *ecf) {
+	size_t count = 0;
+	edata_t *cur;
+	ql_foreach(cur, &ecf->list.head, ql_link_inactive) {
+		count++;
+	}
+	return count;
+}
+
+TEST_BEGIN(test_edata_cache_fast_simple) {
+	edata_cache_t ec;
+	edata_cache_fast_t ecf;
+
+	test_edata_cache_init(&ec);
+	edata_cache_fast_init(&ecf, &ec);
+
+	edata_t *ed1 = edata_cache_fast_get(TSDN_NULL, &ecf);
+	expect_ptr_not_null(ed1, "");
+	expect_zu_eq(ecf_count(&ecf), 0, "");
+	expect_zu_eq(atomic_load_zu(&ec.count, ATOMIC_RELAXED), 0, "");
+
+	edata_t *ed2 = edata_cache_fast_get(TSDN_NULL, &ecf);
+	expect_ptr_not_null(ed2, "");
+	expect_zu_eq(ecf_count(&ecf), 0, "");
+	expect_zu_eq(atomic_load_zu(&ec.count, ATOMIC_RELAXED), 0, "");
+
+	edata_cache_fast_put(TSDN_NULL, &ecf, ed1);
+	expect_zu_eq(ecf_count(&ecf), 1, "");
+	expect_zu_eq(atomic_load_zu(&ec.count, ATOMIC_RELAXED), 0, "");
+
+	edata_cache_fast_put(TSDN_NULL, &ecf, ed2);
+	expect_zu_eq(ecf_count(&ecf), 2, "");
+	expect_zu_eq(atomic_load_zu(&ec.count, ATOMIC_RELAXED), 0, "");
+
+	/* LIFO ordering. */
+	expect_ptr_eq(ed2, edata_cache_fast_get(TSDN_NULL, &ecf), "");
+	expect_zu_eq(ecf_count(&ecf), 1, "");
+	expect_zu_eq(atomic_load_zu(&ec.count, ATOMIC_RELAXED), 0, "");
+
+	expect_ptr_eq(ed1, edata_cache_fast_get(TSDN_NULL, &ecf), "");
+	expect_zu_eq(ecf_count(&ecf), 0, "");
+	expect_zu_eq(atomic_load_zu(&ec.count, ATOMIC_RELAXED), 0, "");
+
+	test_edata_cache_destroy(&ec);
+}
+TEST_END
+
+TEST_BEGIN(test_edata_cache_fill) {
+	edata_cache_t ec;
+	edata_cache_fast_t ecf;
+
+	test_edata_cache_init(&ec);
+	edata_cache_fast_init(&ecf, &ec);
+
+	edata_t *allocs[EDATA_CACHE_FAST_FILL * 2];
+
+	/*
+	 * If the fallback cache can't satisfy the request, we shouldn't do
+	 * extra allocations until compelled to.  Put half the fill goal in the
+	 * fallback.
+	 */
+	for (int i = 0; i < EDATA_CACHE_FAST_FILL / 2; i++) {
+		allocs[i] = edata_cache_get(TSDN_NULL, &ec);
+	}
+	for (int i = 0; i < EDATA_CACHE_FAST_FILL / 2; i++) {
+		edata_cache_put(TSDN_NULL, &ec, allocs[i]);
+	}
+	expect_zu_eq(EDATA_CACHE_FAST_FILL / 2,
+	    atomic_load_zu(&ec.count, ATOMIC_RELAXED), "");
+
+	allocs[0] = edata_cache_fast_get(TSDN_NULL, &ecf);
+	expect_zu_eq(EDATA_CACHE_FAST_FILL / 2 - 1, ecf_count(&ecf),
+	    "Should have grabbed all edatas available but no more.");
+
+	for (int i = 1; i < EDATA_CACHE_FAST_FILL / 2; i++) {
+		allocs[i] = edata_cache_fast_get(TSDN_NULL, &ecf);
+		expect_ptr_not_null(allocs[i], "");
+	}
+	expect_zu_eq(0, ecf_count(&ecf), "");
+
+	/* When forced, we should alloc from the base. */
+	edata_t *edata = edata_cache_fast_get(TSDN_NULL, &ecf);
+	expect_ptr_not_null(edata, "");
+	expect_zu_eq(0, ecf_count(&ecf), "Allocated more than necessary");
+	expect_zu_eq(0, atomic_load_zu(&ec.count, ATOMIC_RELAXED),
+	    "Allocated more than necessary");
+
+	/*
+	 * We should correctly fill in the common case where the fallback isn't
+	 * exhausted, too.
+	 */
+	for (int i = 0; i < EDATA_CACHE_FAST_FILL * 2; i++) {
+		allocs[i] = edata_cache_get(TSDN_NULL, &ec);
+		expect_ptr_not_null(allocs[i], "");
+	}
+	for (int i = 0; i < EDATA_CACHE_FAST_FILL * 2; i++) {
+		edata_cache_put(TSDN_NULL, &ec, allocs[i]);
+	}
+
+	allocs[0] = edata_cache_fast_get(TSDN_NULL, &ecf);
+	expect_zu_eq(EDATA_CACHE_FAST_FILL - 1, ecf_count(&ecf), "");
+	expect_zu_eq(EDATA_CACHE_FAST_FILL,
+	    atomic_load_zu(&ec.count, ATOMIC_RELAXED), "");
+	for (int i = 1; i < EDATA_CACHE_FAST_FILL; i++) {
+		expect_zu_eq(EDATA_CACHE_FAST_FILL - i, ecf_count(&ecf), "");
+		expect_zu_eq(EDATA_CACHE_FAST_FILL,
+		    atomic_load_zu(&ec.count, ATOMIC_RELAXED), "");
+		allocs[i] = edata_cache_fast_get(TSDN_NULL, &ecf);
+		expect_ptr_not_null(allocs[i], "");
+	}
+	expect_zu_eq(0, ecf_count(&ecf), "");
+	expect_zu_eq(EDATA_CACHE_FAST_FILL,
+	    atomic_load_zu(&ec.count, ATOMIC_RELAXED), "");
+
+	allocs[0] = edata_cache_fast_get(TSDN_NULL, &ecf);
+	expect_zu_eq(EDATA_CACHE_FAST_FILL - 1, ecf_count(&ecf), "");
+	expect_zu_eq(0, atomic_load_zu(&ec.count, ATOMIC_RELAXED), "");
+	for (int i = 1; i < EDATA_CACHE_FAST_FILL; i++) {
+		expect_zu_eq(EDATA_CACHE_FAST_FILL - i, ecf_count(&ecf), "");
+		expect_zu_eq(0, atomic_load_zu(&ec.count, ATOMIC_RELAXED), "");
+		allocs[i] = edata_cache_fast_get(TSDN_NULL, &ecf);
+		expect_ptr_not_null(allocs[i], "");
+	}
+	expect_zu_eq(0, ecf_count(&ecf), "");
+	expect_zu_eq(0, atomic_load_zu(&ec.count, ATOMIC_RELAXED), "");
+
+	test_edata_cache_destroy(&ec);
+}
+TEST_END
+
+TEST_BEGIN(test_edata_cache_disable) {
+	edata_cache_t ec;
+	edata_cache_fast_t ecf;
+
+	test_edata_cache_init(&ec);
+	edata_cache_fast_init(&ecf, &ec);
+
+	for (int i = 0; i < EDATA_CACHE_FAST_FILL; i++) {
+		edata_t *edata = edata_cache_get(TSDN_NULL, &ec);
+		expect_ptr_not_null(edata, "");
+		edata_cache_fast_put(TSDN_NULL, &ecf, edata);
+	}
+
+	expect_zu_eq(EDATA_CACHE_FAST_FILL, ecf_count(&ecf), "");
+	expect_zu_eq(0, atomic_load_zu(&ec.count, ATOMIC_RELAXED), "");
+
+	edata_cache_fast_disable(TSDN_NULL, &ecf);
+
+	expect_zu_eq(0, ecf_count(&ecf), "");
+	expect_zu_eq(EDATA_CACHE_FAST_FILL,
+	    atomic_load_zu(&ec.count, ATOMIC_RELAXED), "Disabling should flush");
+
+	edata_t *edata = edata_cache_fast_get(TSDN_NULL, &ecf);
+	expect_zu_eq(0, ecf_count(&ecf), "");
+	expect_zu_eq(EDATA_CACHE_FAST_FILL - 1,
+	    atomic_load_zu(&ec.count, ATOMIC_RELAXED),
+	    "Disabled ecf should forward on get");
+
+	edata_cache_fast_put(TSDN_NULL, &ecf, edata);
+	expect_zu_eq(0, ecf_count(&ecf), "");
+	expect_zu_eq(EDATA_CACHE_FAST_FILL,
+	    atomic_load_zu(&ec.count, ATOMIC_RELAXED),
+	    "Disabled ecf should forward on put");
+
+	test_edata_cache_destroy(&ec);
+}
+TEST_END
+
+int
+main(void) {
+	return test(
+	    test_edata_cache,
+	    test_edata_cache_fast_simple,
+	    test_edata_cache_fill,
+	    test_edata_cache_disable);
+}
diff --git a/deps/jemalloc/test/unit/emitter.c b/deps/jemalloc/test/unit/emitter.c
new file mode 100644
index 0000000..ef8f9ff
--- /dev/null
+++ b/deps/jemalloc/test/unit/emitter.c
@@ -0,0 +1,533 @@
+#include "test/jemalloc_test.h"
+#include "jemalloc/internal/emitter.h"
+
+/*
+ * This is so useful for debugging and feature work, we'll leave printing
+ * functionality committed but disabled by default.
+ */
+/* Print the text as it will appear. */
+static bool print_raw = false;
+/* Print the text escaped, so it can be copied back into the test case. */
+static bool print_escaped = false;
+
+typedef struct buf_descriptor_s buf_descriptor_t;
+struct buf_descriptor_s {
+	char *buf;
+	size_t len;
+	bool mid_quote;
+};
+
+/*
+ * Forwards all writes to the passed-in buf_v (which should be cast from a
+ * buf_descriptor_t *).
+ */
+static void
+forwarding_cb(void *buf_descriptor_v, const char *str) {
+	buf_descriptor_t *buf_descriptor = (buf_descriptor_t *)buf_descriptor_v;
+
+	if (print_raw) {
+		malloc_printf("%s", str);
+	}
+	if (print_escaped) {
+		const char *it = str;
+		while (*it != '\0') {
+			if (!buf_descriptor->mid_quote) {
+				malloc_printf("\"");
+				buf_descriptor->mid_quote = true;
+			}
+			switch (*it) {
+			case '\\':
+				malloc_printf("\\");
+				break;
+			case '\"':
+				malloc_printf("\\\"");
+				break;
+			case '\t':
+				malloc_printf("\\t");
+				break;
+			case '\n':
+				malloc_printf("\\n\"\n");
+				buf_descriptor->mid_quote = false;
+				break;
+			default:
+				malloc_printf("%c", *it);
+			}
+			it++;
+		}
+	}
+
+	size_t written = malloc_snprintf(buf_descriptor->buf,
+	    buf_descriptor->len, "%s", str);
+	expect_zu_eq(written, strlen(str), "Buffer overflow!");
+	buf_descriptor->buf += written;
+	buf_descriptor->len -= written;
+	expect_zu_gt(buf_descriptor->len, 0, "Buffer out of space!");
+}
+
+static void
+expect_emit_output(void (*emit_fn)(emitter_t *),
+    const char *expected_json_output,
+    const char *expected_json_compact_output,
+    const char *expected_table_output) {
+	emitter_t emitter;
+	char buf[MALLOC_PRINTF_BUFSIZE];
+	buf_descriptor_t buf_descriptor;
+
+	buf_descriptor.buf = buf;
+	buf_descriptor.len = MALLOC_PRINTF_BUFSIZE;
+	buf_descriptor.mid_quote = false;
+
+	emitter_init(&emitter, emitter_output_json, &forwarding_cb,
+	    &buf_descriptor);
+	(*emit_fn)(&emitter);
+	expect_str_eq(expected_json_output, buf, "json output failure");
+
+	buf_descriptor.buf = buf;
+	buf_descriptor.len = MALLOC_PRINTF_BUFSIZE;
+	buf_descriptor.mid_quote = false;
+
+	emitter_init(&emitter, emitter_output_json_compact, &forwarding_cb,
+	    &buf_descriptor);
+	(*emit_fn)(&emitter);
+	expect_str_eq(expected_json_compact_output, buf,
+	    "compact json output failure");
+
+	buf_descriptor.buf = buf;
+	buf_descriptor.len = MALLOC_PRINTF_BUFSIZE;
+	buf_descriptor.mid_quote = false;
+
+	emitter_init(&emitter, emitter_output_table, &forwarding_cb,
+	    &buf_descriptor);
+	(*emit_fn)(&emitter);
+	expect_str_eq(expected_table_output, buf, "table output failure");
+}
+
+static void
+emit_dict(emitter_t *emitter) {
+	bool b_false = false;
+	bool b_true = true;
+	int i_123 = 123;
+	const char *str = "a string";
+
+	emitter_begin(emitter);
+	emitter_dict_begin(emitter, "foo", "This is the foo table:");
+	emitter_kv(emitter, "abc", "ABC", emitter_type_bool, &b_false);
+	emitter_kv(emitter, "def", "DEF", emitter_type_bool, &b_true);
+	emitter_kv_note(emitter, "ghi", "GHI", emitter_type_int, &i_123,
+	    "note_key1", emitter_type_string, &str);
+	emitter_kv_note(emitter, "jkl", "JKL", emitter_type_string, &str,
+	    "note_key2", emitter_type_bool, &b_false);
+	emitter_dict_end(emitter);
+	emitter_end(emitter);
+}
+
+static const char *dict_json =
+"{\n"
+"\t\"foo\": {\n"
+"\t\t\"abc\": false,\n"
+"\t\t\"def\": true,\n"
+"\t\t\"ghi\": 123,\n"
+"\t\t\"jkl\": \"a string\"\n"
+"\t}\n"
+"}\n";
+static const char *dict_json_compact =
+"{"
+	"\"foo\":{"
+		"\"abc\":false,"
+		"\"def\":true,"
+		"\"ghi\":123,"
+		"\"jkl\":\"a string\""
+	"}"
+"}";
+static const char *dict_table =
+"This is the foo table:\n"
+"  ABC: false\n"
+"  DEF: true\n"
+"  GHI: 123 (note_key1: \"a string\")\n"
+"  JKL: \"a string\" (note_key2: false)\n";
+
+static void
+emit_table_printf(emitter_t *emitter) {
+	emitter_begin(emitter);
+	emitter_table_printf(emitter, "Table note 1\n");
+	emitter_table_printf(emitter, "Table note 2 %s\n",
+	    "with format string");
+	emitter_end(emitter);
+}
+
+static const char *table_printf_json =
+"{\n"
+"}\n";
+static const char *table_printf_json_compact = "{}";
+static const char *table_printf_table =
+"Table note 1\n"
+"Table note 2 with format string\n";
+
+static void emit_nested_dict(emitter_t *emitter) {
+	int val = 123;
+	emitter_begin(emitter);
+	emitter_dict_begin(emitter, "json1", "Dict 1");
+	emitter_dict_begin(emitter, "json2", "Dict 2");
+	emitter_kv(emitter, "primitive", "A primitive", emitter_type_int, &val);
+	emitter_dict_end(emitter); /* Close 2 */
+	emitter_dict_begin(emitter, "json3", "Dict 3");
+	emitter_dict_end(emitter); /* Close 3 */
+	emitter_dict_end(emitter); /* Close 1 */
+	emitter_dict_begin(emitter, "json4", "Dict 4");
+	emitter_kv(emitter, "primitive", "Another primitive",
+	    emitter_type_int, &val);
+	emitter_dict_end(emitter); /* Close 4 */
+	emitter_end(emitter);
+}
+
+static const char *nested_dict_json =
+"{\n"
+"\t\"json1\": {\n"
+"\t\t\"json2\": {\n"
+"\t\t\t\"primitive\": 123\n"
+"\t\t},\n"
+"\t\t\"json3\": {\n"
+"\t\t}\n"
+"\t},\n"
+"\t\"json4\": {\n"
+"\t\t\"primitive\": 123\n"
+"\t}\n"
+"}\n";
+static const char *nested_dict_json_compact =
+"{"
+	"\"json1\":{"
+		"\"json2\":{"
+			"\"primitive\":123"
+		"},"
+		"\"json3\":{"
+		"}"
+	"},"
+	"\"json4\":{"
+		"\"primitive\":123"
+	"}"
+"}";
+static const char *nested_dict_table =
+"Dict 1\n"
+"  Dict 2\n"
+"    A primitive: 123\n"
+"  Dict 3\n"
+"Dict 4\n"
+"  Another primitive: 123\n";
+
+static void
+emit_types(emitter_t *emitter) {
+	bool b = false;
+	int i = -123;
+	unsigned u = 123;
+	ssize_t zd = -456;
+	size_t zu = 456;
+	const char *str = "string";
+	uint32_t u32 = 789;
+	uint64_t u64 = 10000000000ULL;
+
+	emitter_begin(emitter);
+	emitter_kv(emitter, "k1", "K1", emitter_type_bool, &b);
+	emitter_kv(emitter, "k2", "K2", emitter_type_int, &i);
+	emitter_kv(emitter, "k3", "K3", emitter_type_unsigned, &u);
+	emitter_kv(emitter, "k4", "K4", emitter_type_ssize, &zd);
+	emitter_kv(emitter, "k5", "K5", emitter_type_size, &zu);
+	emitter_kv(emitter, "k6", "K6", emitter_type_string, &str);
+	emitter_kv(emitter, "k7", "K7", emitter_type_uint32, &u32);
+	emitter_kv(emitter, "k8", "K8", emitter_type_uint64, &u64);
+	/*
+	 * We don't test the title type, since it's only used for tables.  It's
+	 * tested in the emitter_table_row tests.
+	 */
+	emitter_end(emitter);
+}
+
+static const char *types_json =
+"{\n"
+"\t\"k1\": false,\n"
+"\t\"k2\": -123,\n"
+"\t\"k3\": 123,\n"
+"\t\"k4\": -456,\n"
+"\t\"k5\": 456,\n"
+"\t\"k6\": \"string\",\n"
+"\t\"k7\": 789,\n"
+"\t\"k8\": 10000000000\n"
+"}\n";
+static const char *types_json_compact =
+"{"
+	"\"k1\":false,"
+	"\"k2\":-123,"
+	"\"k3\":123,"
+	"\"k4\":-456,"
+	"\"k5\":456,"
+	"\"k6\":\"string\","
+	"\"k7\":789,"
+	"\"k8\":10000000000"
+"}";
+static const char *types_table =
+"K1: false\n"
+"K2: -123\n"
+"K3: 123\n"
+"K4: -456\n"
+"K5: 456\n"
+"K6: \"string\"\n"
+"K7: 789\n"
+"K8: 10000000000\n";
+
+static void
+emit_modal(emitter_t *emitter) {
+	int val = 123;
+	emitter_begin(emitter);
+	emitter_dict_begin(emitter, "j0", "T0");
+	emitter_json_key(emitter, "j1");
+	emitter_json_object_begin(emitter);
+	emitter_kv(emitter, "i1", "I1", emitter_type_int, &val);
+	emitter_json_kv(emitter, "i2", emitter_type_int, &val);
+	emitter_table_kv(emitter, "I3", emitter_type_int, &val);
+	emitter_table_dict_begin(emitter, "T1");
+	emitter_kv(emitter, "i4", "I4", emitter_type_int, &val);
+	emitter_json_object_end(emitter); /* Close j1 */
+	emitter_kv(emitter, "i5", "I5", emitter_type_int, &val);
+	emitter_table_dict_end(emitter); /* Close T1 */
+	emitter_kv(emitter, "i6", "I6", emitter_type_int, &val);
+	emitter_dict_end(emitter); /* Close j0 / T0 */
+	emitter_end(emitter);
+}
+
+const char *modal_json =
+"{\n"
+"\t\"j0\": {\n"
+"\t\t\"j1\": {\n"
+"\t\t\t\"i1\": 123,\n"
+"\t\t\t\"i2\": 123,\n"
+"\t\t\t\"i4\": 123\n"
+"\t\t},\n"
+"\t\t\"i5\": 123,\n"
+"\t\t\"i6\": 123\n"
+"\t}\n"
+"}\n";
+const char *modal_json_compact =
+"{"
+	"\"j0\":{"
+		"\"j1\":{"
+			"\"i1\":123,"
+			"\"i2\":123,"
+			"\"i4\":123"
+		"},"
+		"\"i5\":123,"
+		"\"i6\":123"
+	"}"
+"}";
+const char *modal_table =
+"T0\n"
+"  I1: 123\n"
+"  I3: 123\n"
+"  T1\n"
+"    I4: 123\n"
+"    I5: 123\n"
+"  I6: 123\n";
+
+static void
+emit_json_array(emitter_t *emitter) {
+	int ival = 123;
+
+	emitter_begin(emitter);
+	emitter_json_key(emitter, "dict");
+	emitter_json_object_begin(emitter);
+	emitter_json_key(emitter, "arr");
+	emitter_json_array_begin(emitter);
+	emitter_json_object_begin(emitter);
+	emitter_json_kv(emitter, "foo", emitter_type_int, &ival);
+	emitter_json_object_end(emitter); /* Close arr[0] */
+	/* arr[1] and arr[2] are primitives. */
+	emitter_json_value(emitter, emitter_type_int, &ival);
+	emitter_json_value(emitter, emitter_type_int, &ival);
+	emitter_json_object_begin(emitter);
+	emitter_json_kv(emitter, "bar", emitter_type_int, &ival);
+	emitter_json_kv(emitter, "baz", emitter_type_int, &ival);
+	emitter_json_object_end(emitter); /* Close arr[3]. */
+	emitter_json_array_end(emitter); /* Close arr. */
+	emitter_json_object_end(emitter); /* Close dict. */
+	emitter_end(emitter);
+}
+
+static const char *json_array_json =
+"{\n"
+"\t\"dict\": {\n"
+"\t\t\"arr\": [\n"
+"\t\t\t{\n"
+"\t\t\t\t\"foo\": 123\n"
+"\t\t\t},\n"
+"\t\t\t123,\n"
+"\t\t\t123,\n"
+"\t\t\t{\n"
+"\t\t\t\t\"bar\": 123,\n"
+"\t\t\t\t\"baz\": 123\n"
+"\t\t\t}\n"
+"\t\t]\n"
+"\t}\n"
+"}\n";
+static const char *json_array_json_compact =
+"{"
+	"\"dict\":{"
+		"\"arr\":["
+			"{"
+				"\"foo\":123"
+			"},"
+			"123,"
+			"123,"
+			"{"
+				"\"bar\":123,"
+				"\"baz\":123"
+			"}"
+		"]"
+	"}"
+"}";
+static const char *json_array_table = "";
+
+static void
+emit_json_nested_array(emitter_t *emitter) {
+	int ival = 123;
+	char *sval = "foo";
+	emitter_begin(emitter);
+	emitter_json_array_begin(emitter);
+		emitter_json_array_begin(emitter);
+		emitter_json_value(emitter, emitter_type_int, &ival);
+		emitter_json_value(emitter, emitter_type_string, &sval);
+		emitter_json_value(emitter, emitter_type_int, &ival);
+		emitter_json_value(emitter, emitter_type_string, &sval);
+		emitter_json_array_end(emitter);
+		emitter_json_array_begin(emitter);
+		emitter_json_value(emitter, emitter_type_int, &ival);
+		emitter_json_array_end(emitter);
+		emitter_json_array_begin(emitter);
+		emitter_json_value(emitter, emitter_type_string, &sval);
+		emitter_json_value(emitter, emitter_type_int, &ival);
+		emitter_json_array_end(emitter);
+		emitter_json_array_begin(emitter);
+		emitter_json_array_end(emitter);
+	emitter_json_array_end(emitter);
+	emitter_end(emitter);
+}
+
+static const char *json_nested_array_json =
+"{\n"
+"\t[\n"
+"\t\t[\n"
+"\t\t\t123,\n"
+"\t\t\t\"foo\",\n"
+"\t\t\t123,\n"
+"\t\t\t\"foo\"\n"
+"\t\t],\n"
+"\t\t[\n"
+"\t\t\t123\n"
+"\t\t],\n"
+"\t\t[\n"
+"\t\t\t\"foo\",\n"
+"\t\t\t123\n"
+"\t\t],\n"
+"\t\t[\n"
+"\t\t]\n"
+"\t]\n"
+"}\n";
+static const char *json_nested_array_json_compact =
+"{"
+	"["
+		"["
+			"123,"
+			"\"foo\","
+			"123,"
+			"\"foo\""
+		"],"
+		"["
+			"123"
+		"],"
+		"["
+			"\"foo\","
+			"123"
+		"],"
+		"["
+		"]"
+	"]"
+"}";
+static const char *json_nested_array_table = "";
+
+static void
+emit_table_row(emitter_t *emitter) {
+	emitter_begin(emitter);
+	emitter_row_t row;
+	emitter_col_t abc = {emitter_justify_left, 10, emitter_type_title, {0}, {0, 0}};
+	abc.str_val = "ABC title";
+	emitter_col_t def = {emitter_justify_right, 15, emitter_type_title, {0}, {0, 0}};
+	def.str_val = "DEF title";
+	emitter_col_t ghi = {emitter_justify_right, 5, emitter_type_title, {0}, {0, 0}};
+	ghi.str_val = "GHI";
+
+	emitter_row_init(&row);
+	emitter_col_init(&abc, &row);
+	emitter_col_init(&def, &row);
+	emitter_col_init(&ghi, &row);
+
+	emitter_table_row(emitter, &row);
+
+	abc.type = emitter_type_int;
+	def.type = emitter_type_bool;
+	ghi.type = emitter_type_int;
+
+	abc.int_val = 123;
+	def.bool_val = true;
+	ghi.int_val = 456;
+	emitter_table_row(emitter, &row);
+
+	abc.int_val = 789;
+	def.bool_val = false;
+	ghi.int_val = 1011;
+	emitter_table_row(emitter, &row);
+
+	abc.type = emitter_type_string;
+	abc.str_val = "a string";
+	def.bool_val = false;
+	ghi.type = emitter_type_title;
+	ghi.str_val = "ghi";
+	emitter_table_row(emitter, &row);
+
+	emitter_end(emitter);
+}
+
+static const char *table_row_json =
+"{\n"
+"}\n";
+static const char *table_row_json_compact = "{}";
+static const char *table_row_table =
+"ABC title       DEF title  GHI\n"
+"123                  true  456\n"
+"789                 false 1011\n"
+"\"a string\"          false  ghi\n";
+
+#define GENERATE_TEST(feature)					\
+TEST_BEGIN(test_##feature) {					\
+	expect_emit_output(emit_##feature, feature##_json,	\
+	    feature##_json_compact, feature##_table);		\
+}								\
+TEST_END
+
+GENERATE_TEST(dict)
+GENERATE_TEST(table_printf)
+GENERATE_TEST(nested_dict)
+GENERATE_TEST(types)
+GENERATE_TEST(modal)
+GENERATE_TEST(json_array)
+GENERATE_TEST(json_nested_array)
+GENERATE_TEST(table_row)
+
+int
+main(void) {
+	return test_no_reentrancy(
+	    test_dict,
+	    test_table_printf,
+	    test_nested_dict,
+	    test_types,
+	    test_modal,
+	    test_json_array,
+	    test_json_nested_array,
+	    test_table_row);
+}
diff --git a/deps/jemalloc/test/unit/extent_quantize.c b/deps/jemalloc/test/unit/extent_quantize.c
new file mode 100644
index 0000000..e6bbd53
--- /dev/null
+++ b/deps/jemalloc/test/unit/extent_quantize.c
@@ -0,0 +1,141 @@
+#include "test/jemalloc_test.h"
+
+TEST_BEGIN(test_small_extent_size) {
+	unsigned nbins, i;
+	size_t sz, extent_size;
+	size_t mib[4];
+	size_t miblen = sizeof(mib) / sizeof(size_t);
+
+	/*
+	 * Iterate over all small size classes, get their extent sizes, and
+	 * verify that the quantized size is the same as the extent size.
+	 */
+
+	sz = sizeof(unsigned);
+	expect_d_eq(mallctl("arenas.nbins", (void *)&nbins, &sz, NULL, 0), 0,
+	    "Unexpected mallctl failure");
+
+	expect_d_eq(mallctlnametomib("arenas.bin.0.slab_size", mib, &miblen), 0,
+	    "Unexpected mallctlnametomib failure");
+	for (i = 0; i < nbins; i++) {
+		mib[2] = i;
+		sz = sizeof(size_t);
+		expect_d_eq(mallctlbymib(mib, miblen, (void *)&extent_size, &sz,
+		    NULL, 0), 0, "Unexpected mallctlbymib failure");
+		expect_zu_eq(extent_size,
+		    sz_psz_quantize_floor(extent_size),
+		    "Small extent quantization should be a no-op "
+		    "(extent_size=%zu)", extent_size);
+		expect_zu_eq(extent_size,
+		    sz_psz_quantize_ceil(extent_size),
+		    "Small extent quantization should be a no-op "
+		    "(extent_size=%zu)", extent_size);
+	}
+}
+TEST_END
+
+TEST_BEGIN(test_large_extent_size) {
+	bool cache_oblivious;
+	unsigned nlextents, i;
+	size_t sz, extent_size_prev, ceil_prev;
+	size_t mib[4];
+	size_t miblen = sizeof(mib) / sizeof(size_t);
+
+	/*
+	 * Iterate over all large size classes, get their extent sizes, and
+	 * verify that the quantized size is the same as the extent size.
+	 */
+
+	sz = sizeof(bool);
+	expect_d_eq(mallctl("opt.cache_oblivious", (void *)&cache_oblivious,
+	    &sz, NULL, 0), 0, "Unexpected mallctl failure");
+
+	sz = sizeof(unsigned);
+	expect_d_eq(mallctl("arenas.nlextents", (void *)&nlextents, &sz, NULL,
+	    0), 0, "Unexpected mallctl failure");
+
+	expect_d_eq(mallctlnametomib("arenas.lextent.0.size", mib, &miblen), 0,
+	    "Unexpected mallctlnametomib failure");
+	for (i = 0; i < nlextents; i++) {
+		size_t lextent_size, extent_size, floor, ceil;
+
+		mib[2] = i;
+		sz = sizeof(size_t);
+		expect_d_eq(mallctlbymib(mib, miblen, (void *)&lextent_size,
+		    &sz, NULL, 0), 0, "Unexpected mallctlbymib failure");
+		extent_size = cache_oblivious ? lextent_size + PAGE :
+		    lextent_size;
+		floor = sz_psz_quantize_floor(extent_size);
+		ceil = sz_psz_quantize_ceil(extent_size);
+
+		expect_zu_eq(extent_size, floor,
+		    "Extent quantization should be a no-op for precise size "
+		    "(lextent_size=%zu, extent_size=%zu)", lextent_size,
+		    extent_size);
+		expect_zu_eq(extent_size, ceil,
+		    "Extent quantization should be a no-op for precise size "
+		    "(lextent_size=%zu, extent_size=%zu)", lextent_size,
+		    extent_size);
+
+		if (i > 0) {
+			expect_zu_eq(extent_size_prev,
+			    sz_psz_quantize_floor(extent_size - PAGE),
+			    "Floor should be a precise size");
+			if (extent_size_prev < ceil_prev) {
+				expect_zu_eq(ceil_prev, extent_size,
+				    "Ceiling should be a precise size "
+				    "(extent_size_prev=%zu, ceil_prev=%zu, "
+				    "extent_size=%zu)", extent_size_prev,
+				    ceil_prev, extent_size);
+			}
+		}
+		if (i + 1 < nlextents) {
+			extent_size_prev = floor;
+			ceil_prev = sz_psz_quantize_ceil(extent_size +
+			    PAGE);
+		}
+	}
+}
+TEST_END
+
+TEST_BEGIN(test_monotonic) {
+#define SZ_MAX	ZU(4 * 1024 * 1024)
+	unsigned i;
+	size_t floor_prev, ceil_prev;
+
+	floor_prev = 0;
+	ceil_prev = 0;
+	for (i = 1; i <= SZ_MAX >> LG_PAGE; i++) {
+		size_t extent_size, floor, ceil;
+
+		extent_size = i << LG_PAGE;
+		floor = sz_psz_quantize_floor(extent_size);
+		ceil = sz_psz_quantize_ceil(extent_size);
+
+		expect_zu_le(floor, extent_size,
+		    "Floor should be <= (floor=%zu, extent_size=%zu, ceil=%zu)",
+		    floor, extent_size, ceil);
+		expect_zu_ge(ceil, extent_size,
+		    "Ceiling should be >= (floor=%zu, extent_size=%zu, "
+		    "ceil=%zu)", floor, extent_size, ceil);
+
+		expect_zu_le(floor_prev, floor, "Floor should be monotonic "
+		    "(floor_prev=%zu, floor=%zu, extent_size=%zu, ceil=%zu)",
+		    floor_prev, floor, extent_size, ceil);
+		expect_zu_le(ceil_prev, ceil, "Ceiling should be monotonic "
+		    "(floor=%zu, extent_size=%zu, ceil_prev=%zu, ceil=%zu)",
+		    floor, extent_size, ceil_prev, ceil);
+
+		floor_prev = floor;
+		ceil_prev = ceil;
+	}
+}
+TEST_END
+
+int
+main(void) {
+	return test(
+	    test_small_extent_size,
+	    test_large_extent_size,
+	    test_monotonic);
+}
diff --git a/deps/jemalloc/test/unit/fb.c b/deps/jemalloc/test/unit/fb.c
new file mode 100644
index 0000000..ad72c75
--- /dev/null
+++ b/deps/jemalloc/test/unit/fb.c
@@ -0,0 +1,954 @@
+#include "test/jemalloc_test.h"
+
+#include "jemalloc/internal/fb.h"
+#include "test/nbits.h"
+
+static void
+do_test_init(size_t nbits) {
+	size_t sz = FB_NGROUPS(nbits) * sizeof(fb_group_t);
+	fb_group_t *fb = malloc(sz);
+	/* Junk fb's contents. */
+	memset(fb, 99, sz);
+	fb_init(fb, nbits);
+	for (size_t i = 0; i < nbits; i++) {
+		expect_false(fb_get(fb, nbits, i),
+		    "bitmap should start empty");
+	}
+	free(fb);
+}
+
+TEST_BEGIN(test_fb_init) {
+#define NB(nbits) \
+	do_test_init(nbits);
+	NBITS_TAB
+#undef NB
+}
+TEST_END
+
+static void
+do_test_get_set_unset(size_t nbits) {
+	size_t sz = FB_NGROUPS(nbits) * sizeof(fb_group_t);
+	fb_group_t *fb = malloc(sz);
+	fb_init(fb, nbits);
+	/* Set the bits divisible by 3. */
+	for (size_t i = 0; i < nbits; i++) {
+		if (i % 3 == 0) {
+			fb_set(fb, nbits, i);
+		}
+	}
+	/* Check them. */
+	for (size_t i = 0; i < nbits; i++) {
+		expect_b_eq(i % 3 == 0, fb_get(fb, nbits, i),
+		    "Unexpected bit at position %zu", i);
+	}
+	/* Unset those divisible by 5. */
+	for (size_t i = 0; i < nbits; i++) {
+		if (i % 5 == 0) {
+			fb_unset(fb, nbits, i);
+		}
+	}
+	/* Check them. */
+	for (size_t i = 0; i < nbits; i++) {
+		expect_b_eq(i % 3 == 0 && i % 5 != 0, fb_get(fb, nbits, i),
+		    "Unexpected bit at position %zu", i);
+	}
+	free(fb);
+}
+
+TEST_BEGIN(test_get_set_unset) {
+#define NB(nbits) \
+	do_test_get_set_unset(nbits);
+	NBITS_TAB
+#undef NB
+}
+TEST_END
+
+static ssize_t
+find_3_5_compute(ssize_t i, size_t nbits, bool bit, bool forward) {
+	for(; i < (ssize_t)nbits && i >= 0; i += (forward ? 1 : -1)) {
+		bool expected_bit = i % 3 == 0 || i % 5 == 0;
+		if (expected_bit == bit) {
+			return i;
+		}
+	}
+	return forward ? (ssize_t)nbits : (ssize_t)-1;
+}
+
+static void
+do_test_search_simple(size_t nbits) {
+	size_t sz = FB_NGROUPS(nbits) * sizeof(fb_group_t);
+	fb_group_t *fb = malloc(sz);
+	fb_init(fb, nbits);
+
+	/* We pick multiples of 3 or 5. */
+	for (size_t i = 0; i < nbits; i++) {
+		if (i % 3 == 0) {
+			fb_set(fb, nbits, i);
+		}
+		/* This tests double-setting a little, too. */
+		if (i % 5 == 0) {
+			fb_set(fb, nbits, i);
+		}
+	}
+	for (size_t i = 0; i < nbits; i++) {
+		size_t ffs_compute = find_3_5_compute(i, nbits, true, true);
+		size_t ffs_search = fb_ffs(fb, nbits, i);
+		expect_zu_eq(ffs_compute, ffs_search, "ffs mismatch at %zu", i);
+
+		ssize_t fls_compute = find_3_5_compute(i, nbits, true, false);
+		size_t fls_search = fb_fls(fb, nbits, i);
+		expect_zu_eq(fls_compute, fls_search, "fls mismatch at %zu", i);
+
+		size_t ffu_compute = find_3_5_compute(i, nbits, false, true);
+		size_t ffu_search = fb_ffu(fb, nbits, i);
+		expect_zu_eq(ffu_compute, ffu_search, "ffu mismatch at %zu", i);
+
+		size_t flu_compute = find_3_5_compute(i, nbits, false, false);
+		size_t flu_search = fb_flu(fb, nbits, i);
+		expect_zu_eq(flu_compute, flu_search, "flu mismatch at %zu", i);
+	}
+
+	free(fb);
+}
+
+TEST_BEGIN(test_search_simple) {
+#define NB(nbits) \
+	do_test_search_simple(nbits);
+	NBITS_TAB
+#undef NB
+}
+TEST_END
+
+static void
+expect_exhaustive_results(fb_group_t *mostly_full, fb_group_t *mostly_empty,
+    size_t nbits, size_t special_bit, size_t position) {
+	if (position < special_bit) {
+		expect_zu_eq(special_bit, fb_ffs(mostly_empty, nbits, position),
+		    "mismatch at %zu, %zu", position, special_bit);
+		expect_zd_eq(-1, fb_fls(mostly_empty, nbits, position),
+		    "mismatch at %zu, %zu", position, special_bit);
+		expect_zu_eq(position, fb_ffu(mostly_empty, nbits, position),
+		    "mismatch at %zu, %zu", position, special_bit);
+		expect_zd_eq(position, fb_flu(mostly_empty, nbits, position),
+		    "mismatch at %zu, %zu", position, special_bit);
+
+		expect_zu_eq(position, fb_ffs(mostly_full, nbits, position),
+		    "mismatch at %zu, %zu", position, special_bit);
+		expect_zd_eq(position, fb_fls(mostly_full, nbits, position),
+		    "mismatch at %zu, %zu", position, special_bit);
+		expect_zu_eq(special_bit, fb_ffu(mostly_full, nbits, position),
+		    "mismatch at %zu, %zu", position, special_bit);
+		expect_zd_eq(-1, fb_flu(mostly_full, nbits, position),
+		    "mismatch at %zu, %zu", position, special_bit);
+	} else if (position == special_bit) {
+		expect_zu_eq(special_bit, fb_ffs(mostly_empty, nbits, position),
+		    "mismatch at %zu, %zu", position, special_bit);
+		expect_zd_eq(special_bit, fb_fls(mostly_empty, nbits, position),
+		    "mismatch at %zu, %zu", position, special_bit);
+		expect_zu_eq(position + 1, fb_ffu(mostly_empty, nbits, position),
+		    "mismatch at %zu, %zu", position, special_bit);
+		expect_zd_eq(position - 1, fb_flu(mostly_empty, nbits,
+		    position), "mismatch at %zu, %zu", position, special_bit);
+
+		expect_zu_eq(position + 1, fb_ffs(mostly_full, nbits, position),
+		    "mismatch at %zu, %zu", position, special_bit);
+		expect_zd_eq(position - 1, fb_fls(mostly_full, nbits,
+		    position), "mismatch at %zu, %zu", position, special_bit);
+		expect_zu_eq(position, fb_ffu(mostly_full, nbits, position),
+		    "mismatch at %zu, %zu", position, special_bit);
+		expect_zd_eq(position, fb_flu(mostly_full, nbits, position),
+		    "mismatch at %zu, %zu", position, special_bit);
+	} else {
+		/* position > special_bit. */
+		expect_zu_eq(nbits, fb_ffs(mostly_empty, nbits, position),
+		    "mismatch at %zu, %zu", position, special_bit);
+		expect_zd_eq(special_bit, fb_fls(mostly_empty, nbits,
+		    position), "mismatch at %zu, %zu", position, special_bit);
+		expect_zu_eq(position, fb_ffu(mostly_empty, nbits, position),
+		    "mismatch at %zu, %zu", position, special_bit);
+		expect_zd_eq(position, fb_flu(mostly_empty, nbits, position),
+		    "mismatch at %zu, %zu", position, special_bit);
+
+		expect_zu_eq(position, fb_ffs(mostly_full, nbits, position),
+		    "mismatch at %zu, %zu", position, special_bit);
+		expect_zd_eq(position, fb_fls(mostly_full, nbits, position),
+		    "mismatch at %zu, %zu", position, special_bit);
+		expect_zu_eq(nbits, fb_ffu(mostly_full, nbits, position),
+		    "mismatch at %zu, %zu", position, special_bit);
+		expect_zd_eq(special_bit, fb_flu(mostly_full, nbits, position),
+		    "mismatch at %zu, %zu", position, special_bit);
+	}
+}
+
+static void
+do_test_search_exhaustive(size_t nbits) {
+	/* This test is quadratic; let's not get too big. */
+	if (nbits > 1000) {
+		return;
+	}
+	size_t sz = FB_NGROUPS(nbits) * sizeof(fb_group_t);
+	fb_group_t *empty = malloc(sz);
+	fb_init(empty, nbits);
+	fb_group_t *full = malloc(sz);
+	fb_init(full, nbits);
+	fb_set_range(full, nbits, 0, nbits);
+
+	for (size_t i = 0; i < nbits; i++) {
+		fb_set(empty, nbits, i);
+		fb_unset(full, nbits, i);
+
+		for (size_t j = 0; j < nbits; j++) {
+			expect_exhaustive_results(full, empty, nbits, i, j);
+		}
+		fb_unset(empty, nbits, i);
+		fb_set(full, nbits, i);
+	}
+
+	free(empty);
+	free(full);
+}
+
+TEST_BEGIN(test_search_exhaustive) {
+#define NB(nbits) \
+	do_test_search_exhaustive(nbits);
+	NBITS_TAB
+#undef NB
+}
+TEST_END
+
+TEST_BEGIN(test_range_simple) {
+	/*
+	 * Just pick a constant big enough to have nontrivial middle sizes, and
+	 * big enough that usages of things like weirdnum (below) near the
+	 * beginning fit comfortably into the beginning of the bitmap.
+	 */
+	size_t nbits = 64 * 10;
+	size_t ngroups = FB_NGROUPS(nbits);
+	fb_group_t *fb = malloc(sizeof(fb_group_t) * ngroups);
+	fb_init(fb, nbits);
+	for (size_t i = 0; i < nbits; i++) {
+		if (i % 2 == 0) {
+			fb_set_range(fb, nbits, i, 1);
+		}
+	}
+	for (size_t i = 0; i < nbits; i++) {
+		expect_b_eq(i % 2 == 0, fb_get(fb, nbits, i),
+		    "mismatch at position %zu", i);
+	}
+	fb_set_range(fb, nbits, 0, nbits / 2);
+	fb_unset_range(fb, nbits, nbits / 2, nbits / 2);
+	for (size_t i = 0; i < nbits; i++) {
+		expect_b_eq(i < nbits / 2, fb_get(fb, nbits, i),
+		    "mismatch at position %zu", i);
+	}
+
+	static const size_t weirdnum = 7;
+	fb_set_range(fb, nbits, 0, nbits);
+	fb_unset_range(fb, nbits, weirdnum, FB_GROUP_BITS + weirdnum);
+	for (size_t i = 0; i < nbits; i++) {
+		expect_b_eq(7 <= i && i <= 2 * weirdnum + FB_GROUP_BITS - 1,
+		    !fb_get(fb, nbits, i), "mismatch at position %zu", i);
+	}
+	free(fb);
+}
+TEST_END
+
+static void
+do_test_empty_full_exhaustive(size_t nbits) {
+	size_t sz = FB_NGROUPS(nbits) * sizeof(fb_group_t);
+	fb_group_t *empty = malloc(sz);
+	fb_init(empty, nbits);
+	fb_group_t *full = malloc(sz);
+	fb_init(full, nbits);
+	fb_set_range(full, nbits, 0, nbits);
+
+	expect_true(fb_full(full, nbits), "");
+	expect_false(fb_empty(full, nbits), "");
+	expect_false(fb_full(empty, nbits), "");
+	expect_true(fb_empty(empty, nbits), "");
+
+	for (size_t i = 0; i < nbits; i++) {
+		fb_set(empty, nbits, i);
+		fb_unset(full, nbits, i);
+
+		expect_false(fb_empty(empty, nbits), "error at bit %zu", i);
+		if (nbits != 1) {
+			expect_false(fb_full(empty, nbits),
+			    "error at bit %zu", i);
+			expect_false(fb_empty(full, nbits),
+			    "error at bit %zu", i);
+		} else {
+			expect_true(fb_full(empty, nbits),
+			    "error at bit %zu", i);
+			expect_true(fb_empty(full, nbits),
+			    "error at bit %zu", i);
+		}
+		expect_false(fb_full(full, nbits), "error at bit %zu", i);
+
+		fb_unset(empty, nbits, i);
+		fb_set(full, nbits, i);
+	}
+
+	free(empty);
+	free(full);
+}
+
+TEST_BEGIN(test_empty_full) {
+#define NB(nbits) \
+	do_test_empty_full_exhaustive(nbits);
+	NBITS_TAB
+#undef NB
+}
+TEST_END
+
+/*
+ * This tests both iter_range and the longest range functionality, which is
+ * built closely on top of it.
+ */
+TEST_BEGIN(test_iter_range_simple) {
+	size_t set_limit = 30;
+	size_t nbits = 100;
+	fb_group_t fb[FB_NGROUPS(100)];
+
+	fb_init(fb, nbits);
+
+	/*
+	 * Failing to initialize these can lead to build failures with -Wall;
+	 * the compiler can't prove that they're set.
+	 */
+	size_t begin = (size_t)-1;
+	size_t len = (size_t)-1;
+	bool result;
+
+	/* A set of checks with only the first set_limit bits *set*. */
+	fb_set_range(fb, nbits, 0, set_limit);
+	expect_zu_eq(set_limit, fb_srange_longest(fb, nbits),
+	    "Incorrect longest set range");
+	expect_zu_eq(nbits - set_limit, fb_urange_longest(fb, nbits),
+	    "Incorrect longest unset range");
+	for (size_t i = 0; i < set_limit; i++) {
+		result = fb_srange_iter(fb, nbits, i, &begin, &len);
+		expect_true(result, "Should have found a range at %zu", i);
+		expect_zu_eq(i, begin, "Incorrect begin at %zu", i);
+		expect_zu_eq(set_limit - i, len, "Incorrect len at %zu", i);
+
+		result = fb_urange_iter(fb, nbits, i, &begin, &len);
+		expect_true(result, "Should have found a range at %zu", i);
+		expect_zu_eq(set_limit, begin, "Incorrect begin at %zu", i);
+		expect_zu_eq(nbits - set_limit, len, "Incorrect len at %zu", i);
+
+		result = fb_srange_riter(fb, nbits, i, &begin, &len);
+		expect_true(result, "Should have found a range at %zu", i);
+		expect_zu_eq(0, begin, "Incorrect begin at %zu", i);
+		expect_zu_eq(i + 1, len, "Incorrect len at %zu", i);
+
+		result = fb_urange_riter(fb, nbits, i, &begin, &len);
+		expect_false(result, "Should not have found a range at %zu", i);
+	}
+	for (size_t i = set_limit; i < nbits; i++) {
+		result = fb_srange_iter(fb, nbits, i, &begin, &len);
+		expect_false(result, "Should not have found a range at %zu", i);
+
+		result = fb_urange_iter(fb, nbits, i, &begin, &len);
+		expect_true(result, "Should have found a range at %zu", i);
+		expect_zu_eq(i, begin, "Incorrect begin at %zu", i);
+		expect_zu_eq(nbits - i, len, "Incorrect len at %zu", i);
+
+		result = fb_srange_riter(fb, nbits, i, &begin, &len);
+		expect_true(result, "Should have found a range at %zu", i);
+		expect_zu_eq(0, begin, "Incorrect begin at %zu", i);
+		expect_zu_eq(set_limit, len, "Incorrect len at %zu", i);
+
+		result = fb_urange_riter(fb, nbits, i, &begin, &len);
+		expect_true(result, "Should have found a range at %zu", i);
+		expect_zu_eq(set_limit, begin, "Incorrect begin at %zu", i);
+		expect_zu_eq(i - set_limit + 1, len, "Incorrect len at %zu", i);
+	}
+
+	/* A set of checks with only the first set_limit bits *unset*. */
+	fb_unset_range(fb, nbits, 0, set_limit);
+	fb_set_range(fb, nbits, set_limit, nbits - set_limit);
+	expect_zu_eq(nbits - set_limit, fb_srange_longest(fb, nbits),
+	    "Incorrect longest set range");
+	expect_zu_eq(set_limit, fb_urange_longest(fb, nbits),
+	    "Incorrect longest unset range");
+	for (size_t i = 0; i < set_limit; i++) {
+		result = fb_srange_iter(fb, nbits, i, &begin, &len);
+		expect_true(result, "Should have found a range at %zu", i);
+		expect_zu_eq(set_limit, begin, "Incorrect begin at %zu", i);
+		expect_zu_eq(nbits - set_limit, len, "Incorrect len at %zu", i);
+
+		result = fb_urange_iter(fb, nbits, i, &begin, &len);
+		expect_true(result, "Should have found a range at %zu", i);
+		expect_zu_eq(i, begin, "Incorrect begin at %zu", i);
+		expect_zu_eq(set_limit - i, len, "Incorrect len at %zu", i);
+
+		result = fb_srange_riter(fb, nbits, i, &begin, &len);
+		expect_false(result, "Should not have found a range at %zu", i);
+
+		result = fb_urange_riter(fb, nbits, i, &begin, &len);
+		expect_true(result, "Should not have found a range at %zu", i);
+		expect_zu_eq(0, begin, "Incorrect begin at %zu", i);
+		expect_zu_eq(i + 1, len, "Incorrect len at %zu", i);
+	}
+	for (size_t i = set_limit; i < nbits; i++) {
+		result = fb_srange_iter(fb, nbits, i, &begin, &len);
+		expect_true(result, "Should have found a range at %zu", i);
+		expect_zu_eq(i, begin, "Incorrect begin at %zu", i);
+		expect_zu_eq(nbits - i, len, "Incorrect len at %zu", i);
+
+		result = fb_urange_iter(fb, nbits, i, &begin, &len);
+		expect_false(result, "Should not have found a range at %zu", i);
+
+		result = fb_srange_riter(fb, nbits, i, &begin, &len);
+		expect_true(result, "Should have found a range at %zu", i);
+		expect_zu_eq(set_limit, begin, "Incorrect begin at %zu", i);
+		expect_zu_eq(i - set_limit + 1, len, "Incorrect len at %zu", i);
+
+		result = fb_urange_riter(fb, nbits, i, &begin, &len);
+		expect_true(result, "Should have found a range at %zu", i);
+		expect_zu_eq(0, begin, "Incorrect begin at %zu", i);
+		expect_zu_eq(set_limit, len, "Incorrect len at %zu", i);
+	}
+
+}
+TEST_END
+
+/*
+ * Doing this bit-by-bit is too slow for a real implementation, but for testing
+ * code, it's easy to get right.  In the exhaustive tests, we'll compare the
+ * (fast but tricky) real implementation against the (slow but simple) testing
+ * one.
+ */
+static bool
+fb_iter_simple(fb_group_t *fb, size_t nbits, size_t start, size_t *r_begin,
+    size_t *r_len, bool val, bool forward) {
+	ssize_t stride = (forward ? (ssize_t)1 : (ssize_t)-1);
+	ssize_t range_begin = (ssize_t)start;
+	for (; range_begin != (ssize_t)nbits && range_begin != -1;
+	    range_begin += stride) {
+		if (fb_get(fb, nbits, range_begin) == val) {
+			ssize_t range_end = range_begin;
+			for (; range_end != (ssize_t)nbits && range_end != -1;
+			    range_end += stride) {
+				if (fb_get(fb, nbits, range_end) != val) {
+					break;
+				}
+			}
+			if (forward) {
+				*r_begin = range_begin;
+				*r_len = range_end - range_begin;
+			} else {
+				*r_begin = range_end + 1;
+				*r_len = range_begin - range_end;
+			}
+			return true;
+		}
+	}
+	return false;
+}
+
+/* Similar, but for finding longest ranges. */
+static size_t
+fb_range_longest_simple(fb_group_t *fb, size_t nbits, bool val) {
+	size_t longest_so_far = 0;
+	for (size_t begin = 0; begin < nbits; begin++) {
+		if (fb_get(fb, nbits, begin) != val) {
+			continue;
+		}
+		size_t end = begin + 1;
+		for (; end < nbits; end++) {
+			if (fb_get(fb, nbits, end) != val) {
+				break;
+			}
+		}
+		if (end - begin > longest_so_far) {
+			longest_so_far = end - begin;
+		}
+	}
+	return longest_so_far;
+}
+
+static void
+expect_iter_results_at(fb_group_t *fb, size_t nbits, size_t pos,
+    bool val, bool forward) {
+	bool iter_res;
+	size_t iter_begin JEMALLOC_CC_SILENCE_INIT(0);
+	size_t iter_len JEMALLOC_CC_SILENCE_INIT(0);
+	if (val) {
+		if (forward) {
+			iter_res = fb_srange_iter(fb, nbits, pos,
+			    &iter_begin, &iter_len);
+		} else {
+			iter_res = fb_srange_riter(fb, nbits, pos,
+			    &iter_begin, &iter_len);
+		}
+	} else {
+		if (forward) {
+			iter_res = fb_urange_iter(fb, nbits, pos,
+			    &iter_begin, &iter_len);
+		} else {
+			iter_res = fb_urange_riter(fb, nbits, pos,
+			    &iter_begin, &iter_len);
+		}
+	}
+
+	bool simple_iter_res;
+	/*
+	 * These are dead stores, but the compiler can't always figure that out
+	 * statically, and warns on the uninitialized variable.
+	 */
+	size_t simple_iter_begin = 0;
+	size_t simple_iter_len = 0;
+	simple_iter_res = fb_iter_simple(fb, nbits, pos, &simple_iter_begin,
+	    &simple_iter_len, val, forward);
+
+	expect_b_eq(iter_res, simple_iter_res, "Result mismatch at %zu", pos);
+	if (iter_res && simple_iter_res) {
+		assert_zu_eq(iter_begin, simple_iter_begin,
+		    "Begin mismatch at %zu", pos);
+		expect_zu_eq(iter_len, simple_iter_len,
+		    "Length mismatch at %zu", pos);
+	}
+}
+
+static void
+expect_iter_results(fb_group_t *fb, size_t nbits) {
+	for (size_t i = 0; i < nbits; i++) {
+		expect_iter_results_at(fb, nbits, i, false, false);
+		expect_iter_results_at(fb, nbits, i, false, true);
+		expect_iter_results_at(fb, nbits, i, true, false);
+		expect_iter_results_at(fb, nbits, i, true, true);
+	}
+	expect_zu_eq(fb_range_longest_simple(fb, nbits, true),
+	    fb_srange_longest(fb, nbits), "Longest range mismatch");
+	expect_zu_eq(fb_range_longest_simple(fb, nbits, false),
+	    fb_urange_longest(fb, nbits), "Longest range mismatch");
+}
+
+static void
+set_pattern_3(fb_group_t *fb, size_t nbits, bool zero_val) {
+	for (size_t i = 0; i < nbits; i++) {
+		if ((i % 6 < 3 && zero_val) || (i % 6 >= 3 && !zero_val)) {
+			fb_set(fb, nbits, i);
+		} else {
+			fb_unset(fb, nbits, i);
+		}
+	}
+}
+
+static void
+do_test_iter_range_exhaustive(size_t nbits) {
+	/* This test is also pretty slow. */
+	if (nbits > 1000) {
+		return;
+	}
+	size_t sz = FB_NGROUPS(nbits) * sizeof(fb_group_t);
+	fb_group_t *fb = malloc(sz);
+	fb_init(fb, nbits);
+
+	set_pattern_3(fb, nbits, /* zero_val */ true);
+	expect_iter_results(fb, nbits);
+
+	set_pattern_3(fb, nbits, /* zero_val */ false);
+	expect_iter_results(fb, nbits);
+
+	fb_set_range(fb, nbits, 0, nbits);
+	fb_unset_range(fb, nbits, 0, nbits / 2 == 0 ? 1 : nbits / 2);
+	expect_iter_results(fb, nbits);
+
+	fb_unset_range(fb, nbits, 0, nbits);
+	fb_set_range(fb, nbits, 0, nbits / 2 == 0 ? 1: nbits / 2);
+	expect_iter_results(fb, nbits);
+
+	free(fb);
+}
+
+/*
+ * Like test_iter_range_simple, this tests both iteration and longest-range
+ * computation.
+ */
+TEST_BEGIN(test_iter_range_exhaustive) {
+#define NB(nbits) \
+	do_test_iter_range_exhaustive(nbits);
+	NBITS_TAB
+#undef NB
+}
+TEST_END
+
+/*
+ * If all set bits in the bitmap are contiguous, in [set_start, set_end),
+ * returns the number of set bits in [scount_start, scount_end).
+ */
+static size_t
+scount_contiguous(size_t set_start, size_t set_end, size_t scount_start,
+    size_t scount_end) {
+	/* No overlap. */
+	if (set_end <= scount_start || scount_end <= set_start) {
+		return 0;
+	}
+	/* set range contains scount range */
+	if (set_start <= scount_start && set_end >= scount_end) {
+		return scount_end - scount_start;
+	}
+	/* scount range contains set range. */
+	if (scount_start <= set_start && scount_end >= set_end) {
+		return set_end - set_start;
+	}
+	/* Partial overlap, with set range starting first. */
+	if (set_start < scount_start && set_end < scount_end) {
+		return set_end - scount_start;
+	}
+	/* Partial overlap, with scount range starting first. */
+	if (scount_start < set_start && scount_end < set_end) {
+		return scount_end - set_start;
+	}
+	/*
+	 * Trigger an assert failure; the above list should have been
+	 * exhaustive.
+	 */
+	unreachable();
+}
+
+static size_t
+ucount_contiguous(size_t set_start, size_t set_end, size_t ucount_start,
+    size_t ucount_end) {
+	/* No overlap. */
+	if (set_end <= ucount_start || ucount_end <= set_start) {
+		return ucount_end - ucount_start;
+	}
+	/* set range contains ucount range */
+	if (set_start <= ucount_start && set_end >= ucount_end) {
+		return 0;
+	}
+	/* ucount range contains set range. */
+	if (ucount_start <= set_start && ucount_end >= set_end) {
+		return (ucount_end - ucount_start) - (set_end - set_start);
+	}
+	/* Partial overlap, with set range starting first. */
+	if (set_start < ucount_start && set_end < ucount_end) {
+		return ucount_end - set_end;
+	}
+	/* Partial overlap, with ucount range starting first. */
+	if (ucount_start < set_start && ucount_end < set_end) {
+		return set_start - ucount_start;
+	}
+	/*
+	 * Trigger an assert failure; the above list should have been
+	 * exhaustive.
+	 */
+	unreachable();
+}
+
+static void
+expect_count_match_contiguous(fb_group_t *fb, size_t nbits, size_t set_start,
+    size_t set_end) {
+	for (size_t i = 0; i < nbits; i++) {
+		for (size_t j = i + 1; j <= nbits; j++) {
+			size_t cnt = j - i;
+			size_t scount_expected = scount_contiguous(set_start,
+			    set_end, i, j);
+			size_t scount_computed = fb_scount(fb, nbits, i, cnt);
+			expect_zu_eq(scount_expected, scount_computed,
+			    "fb_scount error with nbits=%zu, start=%zu, "
+			    "cnt=%zu, with bits set in [%zu, %zu)",
+			    nbits, i, cnt, set_start, set_end);
+
+			size_t ucount_expected = ucount_contiguous(set_start,
+			    set_end, i, j);
+			size_t ucount_computed = fb_ucount(fb, nbits, i, cnt);
+			assert_zu_eq(ucount_expected, ucount_computed,
+			    "fb_ucount error with nbits=%zu, start=%zu, "
+			    "cnt=%zu, with bits set in [%zu, %zu)",
+			    nbits, i, cnt, set_start, set_end);
+
+		}
+	}
+}
+
+static void
+do_test_count_contiguous(size_t nbits) {
+	size_t sz = FB_NGROUPS(nbits) * sizeof(fb_group_t);
+	fb_group_t *fb = malloc(sz);
+
+	fb_init(fb, nbits);
+
+	expect_count_match_contiguous(fb, nbits, 0, 0);
+	for (size_t i = 0; i < nbits; i++) {
+		fb_set(fb, nbits, i);
+		expect_count_match_contiguous(fb, nbits, 0, i + 1);
+	}
+
+	for (size_t i = 0; i < nbits; i++) {
+		fb_unset(fb, nbits, i);
+		expect_count_match_contiguous(fb, nbits, i + 1, nbits);
+	}
+
+	free(fb);
+}
+
+TEST_BEGIN(test_count_contiguous_simple) {
+	enum {nbits = 300};
+	fb_group_t fb[FB_NGROUPS(nbits)];
+	fb_init(fb, nbits);
+	/* Just an arbitrary number. */
+	size_t start = 23;
+
+	fb_set_range(fb, nbits, start, 30 - start);
+	expect_count_match_contiguous(fb, nbits, start, 30);
+
+	fb_set_range(fb, nbits, start, 40 - start);
+	expect_count_match_contiguous(fb, nbits, start, 40);
+
+	fb_set_range(fb, nbits, start, 70 - start);
+	expect_count_match_contiguous(fb, nbits, start, 70);
+
+	fb_set_range(fb, nbits, start, 120 - start);
+	expect_count_match_contiguous(fb, nbits, start, 120);
+
+	fb_set_range(fb, nbits, start, 150 - start);
+	expect_count_match_contiguous(fb, nbits, start, 150);
+
+	fb_set_range(fb, nbits, start, 200 - start);
+	expect_count_match_contiguous(fb, nbits, start, 200);
+
+	fb_set_range(fb, nbits, start, 290 - start);
+	expect_count_match_contiguous(fb, nbits, start, 290);
+}
+TEST_END
+
+TEST_BEGIN(test_count_contiguous) {
+#define NB(nbits) \
+	/* This test is *particularly* slow in debug builds. */ \
+	if ((!config_debug && nbits < 300) || nbits < 150) { \
+		do_test_count_contiguous(nbits); \
+	}
+	NBITS_TAB
+#undef NB
+}
+TEST_END
+
+static void
+expect_count_match_alternating(fb_group_t *fb_even, fb_group_t *fb_odd,
+    size_t nbits) {
+	for (size_t i = 0; i < nbits; i++) {
+		for (size_t j = i + 1; j <= nbits; j++) {
+			size_t cnt = j - i;
+			size_t odd_scount = cnt / 2
+			    + (size_t)(cnt % 2 == 1 && i % 2 == 1);
+			size_t odd_scount_computed = fb_scount(fb_odd, nbits,
+			    i, j - i);
+			assert_zu_eq(odd_scount, odd_scount_computed,
+			    "fb_scount error with nbits=%zu, start=%zu, "
+			    "cnt=%zu, with alternating bits set.",
+			    nbits, i, j - i);
+
+			size_t odd_ucount = cnt / 2
+			    + (size_t)(cnt % 2 == 1 && i % 2 == 0);
+			size_t odd_ucount_computed = fb_ucount(fb_odd, nbits,
+			    i, j - i);
+			assert_zu_eq(odd_ucount, odd_ucount_computed,
+			    "fb_ucount error with nbits=%zu, start=%zu, "
+			    "cnt=%zu, with alternating bits set.",
+			    nbits, i, j - i);
+
+			size_t even_scount = cnt / 2
+			    + (size_t)(cnt % 2 == 1 && i % 2 == 0);
+			size_t even_scount_computed = fb_scount(fb_even, nbits,
+			    i, j - i);
+			assert_zu_eq(even_scount, even_scount_computed,
+			    "fb_scount error with nbits=%zu, start=%zu, "
+			    "cnt=%zu, with alternating bits set.",
+			    nbits, i, j - i);
+
+			size_t even_ucount = cnt / 2
+			    + (size_t)(cnt % 2 == 1 && i % 2 == 1);
+			size_t even_ucount_computed = fb_ucount(fb_even, nbits,
+			    i, j - i);
+			assert_zu_eq(even_ucount, even_ucount_computed,
+			    "fb_ucount error with nbits=%zu, start=%zu, "
+			    "cnt=%zu, with alternating bits set.",
+			    nbits, i, j - i);
+		}
+	}
+}
+
+static void
+do_test_count_alternating(size_t nbits) {
+	if (nbits > 1000) {
+		return;
+	}
+	size_t sz = FB_NGROUPS(nbits) * sizeof(fb_group_t);
+	fb_group_t *fb_even = malloc(sz);
+	fb_group_t *fb_odd = malloc(sz);
+
+	fb_init(fb_even, nbits);
+	fb_init(fb_odd, nbits);
+
+	for (size_t i = 0; i < nbits; i++) {
+		if (i % 2 == 0) {
+			fb_set(fb_even, nbits, i);
+		} else {
+			fb_set(fb_odd, nbits, i);
+		}
+	}
+
+	expect_count_match_alternating(fb_even, fb_odd, nbits);
+
+	free(fb_even);
+	free(fb_odd);
+}
+
+TEST_BEGIN(test_count_alternating) {
+#define NB(nbits) \
+	do_test_count_alternating(nbits);
+	NBITS_TAB
+#undef NB
+}
+TEST_END
+
+static void
+do_test_bit_op(size_t nbits, bool (*op)(bool a, bool b),
+    void (*fb_op)(fb_group_t *dst, fb_group_t *src1, fb_group_t *src2, size_t nbits)) {
+	size_t sz = FB_NGROUPS(nbits) * sizeof(fb_group_t);
+	fb_group_t *fb1 = malloc(sz);
+	fb_group_t *fb2 = malloc(sz);
+	fb_group_t *fb_result = malloc(sz);
+	fb_init(fb1, nbits);
+	fb_init(fb2, nbits);
+	fb_init(fb_result, nbits);
+
+	/* Just two random numbers. */
+	const uint64_t prng_init1 = (uint64_t)0X4E9A9DE6A35691CDULL;
+	const uint64_t prng_init2 = (uint64_t)0X7856E396B063C36EULL;
+
+	uint64_t prng1 = prng_init1;
+	uint64_t prng2 = prng_init2;
+
+	for (size_t i = 0; i < nbits; i++) {
+		bool bit1 = ((prng1 & (1ULL << (i % 64))) != 0);
+		bool bit2 = ((prng2 & (1ULL << (i % 64))) != 0);
+
+		if (bit1) {
+			fb_set(fb1, nbits, i);
+		}
+		if (bit2) {
+			fb_set(fb2, nbits, i);
+		}
+
+		if (i % 64 == 0) {
+			prng1 = prng_state_next_u64(prng1);
+			prng2 = prng_state_next_u64(prng2);
+		}
+	}
+
+	fb_op(fb_result, fb1, fb2, nbits);
+
+	/* Reset the prngs to replay them. */
+	prng1 = prng_init1;
+	prng2 = prng_init2;
+
+	for (size_t i = 0; i < nbits; i++) {
+		bool bit1 = ((prng1 & (1ULL << (i % 64))) != 0);
+		bool bit2 = ((prng2 & (1ULL << (i % 64))) != 0);
+
+		/* Original bitmaps shouldn't change. */
+		expect_b_eq(bit1, fb_get(fb1, nbits, i), "difference at bit %zu", i);
+		expect_b_eq(bit2, fb_get(fb2, nbits, i), "difference at bit %zu", i);
+
+		/* New one should be bitwise and. */
+		expect_b_eq(op(bit1, bit2), fb_get(fb_result, nbits, i),
+		    "difference at bit %zu", i);
+
+		/* Update the same way we did last time. */
+		if (i % 64 == 0) {
+			prng1 = prng_state_next_u64(prng1);
+			prng2 = prng_state_next_u64(prng2);
+		}
+	}
+
+	free(fb1);
+	free(fb2);
+	free(fb_result);
+}
+
+static bool
+binary_and(bool a, bool b) {
+	return a & b;
+}
+
+static void
+do_test_bit_and(size_t nbits) {
+	do_test_bit_op(nbits, &binary_and, &fb_bit_and);
+}
+
+TEST_BEGIN(test_bit_and) {
+#define NB(nbits) \
+	do_test_bit_and(nbits);
+	NBITS_TAB
+#undef NB
+}
+TEST_END
+
+static bool
+binary_or(bool a, bool b) {
+	return a | b;
+}
+
+static void
+do_test_bit_or(size_t nbits) {
+	do_test_bit_op(nbits, &binary_or, &fb_bit_or);
+}
+
+TEST_BEGIN(test_bit_or) {
+#define NB(nbits) \
+	do_test_bit_or(nbits);
+	NBITS_TAB
+#undef NB
+}
+TEST_END
+
+static bool
+binary_not(bool a, bool b) {
+	(void)b;
+	return !a;
+}
+
+static void
+fb_bit_not_shim(fb_group_t *dst, fb_group_t *src1, fb_group_t *src2,
+    size_t nbits) {
+	(void)src2;
+	fb_bit_not(dst, src1, nbits);
+}
+
+static void
+do_test_bit_not(size_t nbits) {
+	do_test_bit_op(nbits, &binary_not, &fb_bit_not_shim);
+}
+
+TEST_BEGIN(test_bit_not) {
+#define NB(nbits) \
+	do_test_bit_not(nbits);
+	NBITS_TAB
+#undef NB
+}
+TEST_END
+
+int
+main(void) {
+	return test_no_reentrancy(
+	    test_fb_init,
+	    test_get_set_unset,
+	    test_search_simple,
+	    test_search_exhaustive,
+	    test_range_simple,
+	    test_empty_full,
+	    test_iter_range_simple,
+	    test_iter_range_exhaustive,
+	    test_count_contiguous_simple,
+	    test_count_contiguous,
+	    test_count_alternating,
+	    test_bit_and,
+	    test_bit_or,
+	    test_bit_not);
+}
diff --git a/deps/jemalloc/test/unit/fork.c b/deps/jemalloc/test/unit/fork.c
new file mode 100644
index 0000000..4137423
--- /dev/null
+++ b/deps/jemalloc/test/unit/fork.c
@@ -0,0 +1,141 @@
+#include "test/jemalloc_test.h"
+
+#ifndef _WIN32
+#include <sys/wait.h>
+#endif
+
+#ifndef _WIN32
+static void
+wait_for_child_exit(int pid) {
+	int status;
+	while (true) {
+		if (waitpid(pid, &status, 0) == -1) {
+			test_fail("Unexpected waitpid() failure.");
+		}
+		if (WIFSIGNALED(status)) {
+			test_fail("Unexpected child termination due to "
+			    "signal %d", WTERMSIG(status));
+			break;
+		}
+		if (WIFEXITED(status)) {
+			if (WEXITSTATUS(status) != 0) {
+				test_fail("Unexpected child exit value %d",
+				    WEXITSTATUS(status));
+			}
+			break;
+		}
+	}
+}
+#endif
+
+TEST_BEGIN(test_fork) {
+#ifndef _WIN32
+	void *p;
+	pid_t pid;
+
+	/* Set up a manually managed arena for test. */
+	unsigned arena_ind;
+	size_t sz = sizeof(unsigned);
+	expect_d_eq(mallctl("arenas.create", (void *)&arena_ind, &sz, NULL, 0),
+	    0, "Unexpected mallctl() failure");
+
+	/* Migrate to the new arena. */
+	unsigned old_arena_ind;
+	sz = sizeof(old_arena_ind);
+	expect_d_eq(mallctl("thread.arena", (void *)&old_arena_ind, &sz,
+	    (void *)&arena_ind, sizeof(arena_ind)), 0,
+	    "Unexpected mallctl() failure");
+
+	p = malloc(1);
+	expect_ptr_not_null(p, "Unexpected malloc() failure");
+
+	pid = fork();
+
+	free(p);
+
+	p = malloc(64);
+	expect_ptr_not_null(p, "Unexpected malloc() failure");
+	free(p);
+
+	if (pid == -1) {
+		/* Error. */
+		test_fail("Unexpected fork() failure");
+	} else if (pid == 0) {
+		/* Child. */
+		_exit(0);
+	} else {
+		wait_for_child_exit(pid);
+	}
+#else
+	test_skip("fork(2) is irrelevant to Windows");
+#endif
+}
+TEST_END
+
+#ifndef _WIN32
+static void *
+do_fork_thd(void *arg) {
+	malloc(1);
+	int pid = fork();
+	if (pid == -1) {
+		/* Error. */
+		test_fail("Unexpected fork() failure");
+	} else if (pid == 0) {
+		/* Child. */
+		char *args[] = {"true", NULL};
+		execvp(args[0], args);
+		test_fail("Exec failed");
+	} else {
+		/* Parent */
+		wait_for_child_exit(pid);
+	}
+	return NULL;
+}
+#endif
+
+#ifndef _WIN32
+static void
+do_test_fork_multithreaded() {
+	thd_t child;
+	thd_create(&child, do_fork_thd, NULL);
+	do_fork_thd(NULL);
+	thd_join(child, NULL);
+}
+#endif
+
+TEST_BEGIN(test_fork_multithreaded) {
+#ifndef _WIN32
+	/*
+	 * We've seen bugs involving hanging on arenas_lock (though the same
+	 * class of bugs can happen on any mutex).  The bugs are intermittent
+	 * though, so we want to run the test multiple times.  Since we hold the
+	 * arenas lock only early in the process lifetime, we can't just run
+	 * this test in a loop (since, after all the arenas are initialized, we
+	 * won't acquire arenas_lock any further).  We therefore repeat the test
+	 * with multiple processes.
+	 */
+	for (int i = 0; i < 100; i++) {
+		int pid = fork();
+		if (pid == -1) {
+			/* Error. */
+			test_fail("Unexpected fork() failure,");
+		} else if (pid == 0) {
+			/* Child. */
+			do_test_fork_multithreaded();
+			_exit(0);
+		} else {
+			wait_for_child_exit(pid);
+		}
+	}
+#else
+	test_skip("fork(2) is irrelevant to Windows");
+#endif
+}
+TEST_END
+
+int
+main(void) {
+	return test_no_reentrancy(
+	    test_fork,
+	    test_fork_multithreaded);
+}
diff --git a/deps/jemalloc/test/unit/fxp.c b/deps/jemalloc/test/unit/fxp.c
new file mode 100644
index 0000000..27f1097
--- /dev/null
+++ b/deps/jemalloc/test/unit/fxp.c
@@ -0,0 +1,394 @@
+#include "test/jemalloc_test.h"
+
+#include "jemalloc/internal/fxp.h"
+
+static double
+fxp2double(fxp_t a) {
+	double intpart = (double)(a >> 16);
+	double fracpart = (double)(a & ((1U << 16) - 1)) / (1U << 16);
+	return intpart + fracpart;
+}
+
+/* Is a close to b? */
+static bool
+double_close(double a, double b) {
+	/*
+	 * Our implementation doesn't try for precision.  Correspondingly, don't
+	 * enforce it too strenuously here; accept values that are close in
+	 * either relative or absolute terms.
+	 */
+	return fabs(a - b) < 0.01 || fabs(a - b) / a < 0.01;
+}
+
+static bool
+fxp_close(fxp_t a, fxp_t b) {
+	return double_close(fxp2double(a), fxp2double(b));
+}
+
+static fxp_t
+xparse_fxp(const char *str) {
+	fxp_t result;
+	bool err = fxp_parse(&result, str, NULL);
+	assert_false(err, "Invalid fxp string: %s", str);
+	return result;
+}
+
+static void
+expect_parse_accurate(const char *str, const char *parse_str) {
+	double true_val = strtod(str, NULL);
+	fxp_t fxp_val;
+	char *end;
+	bool err = fxp_parse(&fxp_val, parse_str, &end);
+	expect_false(err, "Unexpected parse failure");
+	expect_ptr_eq(parse_str + strlen(str), end,
+	    "Didn't parse whole string");
+	expect_true(double_close(fxp2double(fxp_val), true_val),
+	    "Misparsed %s", str);
+}
+
+static void
+parse_valid_trial(const char *str) {
+	/* The value it parses should be correct. */
+	expect_parse_accurate(str, str);
+	char buf[100];
+	snprintf(buf, sizeof(buf), "%swith_some_trailing_text", str);
+	expect_parse_accurate(str, buf);
+	snprintf(buf, sizeof(buf), "%s with a space", str);
+	expect_parse_accurate(str, buf);
+	snprintf(buf, sizeof(buf), "%s,in_a_malloc_conf_string:1", str);
+	expect_parse_accurate(str, buf);
+}
+
+TEST_BEGIN(test_parse_valid) {
+	parse_valid_trial("0");
+	parse_valid_trial("1");
+	parse_valid_trial("2");
+	parse_valid_trial("100");
+	parse_valid_trial("345");
+	parse_valid_trial("00000000123");
+	parse_valid_trial("00000000987");
+
+	parse_valid_trial("0.0");
+	parse_valid_trial("0.00000000000456456456");
+	parse_valid_trial("100.00000000000456456456");
+
+	parse_valid_trial("123.1");
+	parse_valid_trial("123.01");
+	parse_valid_trial("123.001");
+	parse_valid_trial("123.0001");
+	parse_valid_trial("123.00001");
+	parse_valid_trial("123.000001");
+	parse_valid_trial("123.0000001");
+
+	parse_valid_trial(".0");
+	parse_valid_trial(".1");
+	parse_valid_trial(".01");
+	parse_valid_trial(".001");
+	parse_valid_trial(".0001");
+	parse_valid_trial(".00001");
+	parse_valid_trial(".000001");
+
+	parse_valid_trial(".1");
+	parse_valid_trial(".10");
+	parse_valid_trial(".100");
+	parse_valid_trial(".1000");
+	parse_valid_trial(".100000");
+}
+TEST_END
+
+static void
+expect_parse_failure(const char *str) {
+	fxp_t result = FXP_INIT_INT(333);
+	char *end = (void *)0x123;
+	bool err = fxp_parse(&result, str, &end);
+	expect_true(err, "Expected a parse error on: %s", str);
+	expect_ptr_eq((void *)0x123, end,
+	    "Parse error shouldn't change results");
+	expect_u32_eq(result, FXP_INIT_INT(333),
+	    "Parse error shouldn't change results");
+}
+
+TEST_BEGIN(test_parse_invalid) {
+	expect_parse_failure("123.");
+	expect_parse_failure("3.a");
+	expect_parse_failure(".a");
+	expect_parse_failure("a.1");
+	expect_parse_failure("a");
+	/* A valid string, but one that overflows. */
+	expect_parse_failure("123456789");
+	expect_parse_failure("0000000123456789");
+	expect_parse_failure("1000000");
+}
+TEST_END
+
+static void
+expect_init_percent(unsigned percent, const char *str) {
+	fxp_t result_init = FXP_INIT_PERCENT(percent);
+	fxp_t result_parse = xparse_fxp(str);
+	expect_u32_eq(result_init, result_parse,
+	    "Expect representations of FXP_INIT_PERCENT(%u) and "
+	    "fxp_parse(\"%s\") to be equal; got %x and %x",
+	    percent, str, result_init, result_parse);
+
+}
+
+/*
+ * Every other test uses either parsing or FXP_INIT_INT; it gets tested in those
+ * ways.  We need a one-off for the percent-based initialization, though.
+ */
+TEST_BEGIN(test_init_percent) {
+	expect_init_percent(100, "1");
+	expect_init_percent(75, ".75");
+	expect_init_percent(1, ".01");
+	expect_init_percent(50, ".5");
+}
+TEST_END
+
+static void
+expect_add(const char *astr, const char *bstr, const char* resultstr) {
+	fxp_t a = xparse_fxp(astr);
+	fxp_t b = xparse_fxp(bstr);
+	fxp_t result = xparse_fxp(resultstr);
+	expect_true(fxp_close(fxp_add(a, b), result),
+	    "Expected %s + %s == %s", astr, bstr, resultstr);
+}
+
+TEST_BEGIN(test_add_simple) {
+	expect_add("0", "0", "0");
+	expect_add("0", "1", "1");
+	expect_add("1", "1", "2");
+	expect_add("1.5", "1.5", "3");
+	expect_add("0.1", "0.1", "0.2");
+	expect_add("123", "456", "579");
+}
+TEST_END
+
+static void
+expect_sub(const char *astr, const char *bstr, const char* resultstr) {
+	fxp_t a = xparse_fxp(astr);
+	fxp_t b = xparse_fxp(bstr);
+	fxp_t result = xparse_fxp(resultstr);
+	expect_true(fxp_close(fxp_sub(a, b), result),
+	    "Expected %s - %s == %s", astr, bstr, resultstr);
+}
+
+TEST_BEGIN(test_sub_simple) {
+	expect_sub("0", "0", "0");
+	expect_sub("1", "0", "1");
+	expect_sub("1", "1", "0");
+	expect_sub("3.5", "1.5", "2");
+	expect_sub("0.3", "0.1", "0.2");
+	expect_sub("456", "123", "333");
+}
+TEST_END
+
+static void
+expect_mul(const char *astr, const char *bstr, const char* resultstr) {
+	fxp_t a = xparse_fxp(astr);
+	fxp_t b = xparse_fxp(bstr);
+	fxp_t result = xparse_fxp(resultstr);
+	expect_true(fxp_close(fxp_mul(a, b), result),
+	    "Expected %s * %s == %s", astr, bstr, resultstr);
+}
+
+TEST_BEGIN(test_mul_simple) {
+	expect_mul("0", "0", "0");
+	expect_mul("1", "0", "0");
+	expect_mul("1", "1", "1");
+	expect_mul("1.5", "1.5", "2.25");
+	expect_mul("100.0", "10", "1000");
+	expect_mul(".1", "10", "1");
+}
+TEST_END
+
+static void
+expect_div(const char *astr, const char *bstr, const char* resultstr) {
+	fxp_t a = xparse_fxp(astr);
+	fxp_t b = xparse_fxp(bstr);
+	fxp_t result = xparse_fxp(resultstr);
+	expect_true(fxp_close(fxp_div(a, b), result),
+	    "Expected %s / %s == %s", astr, bstr, resultstr);
+}
+
+TEST_BEGIN(test_div_simple) {
+	expect_div("1", "1", "1");
+	expect_div("0", "1", "0");
+	expect_div("2", "1", "2");
+	expect_div("3", "2", "1.5");
+	expect_div("3", "1.5", "2");
+	expect_div("10", ".1", "100");
+	expect_div("123", "456", ".2697368421");
+}
+TEST_END
+
+static void
+expect_round(const char *str, uint32_t rounded_down, uint32_t rounded_nearest) {
+	fxp_t fxp = xparse_fxp(str);
+	uint32_t fxp_rounded_down = fxp_round_down(fxp);
+	uint32_t fxp_rounded_nearest = fxp_round_nearest(fxp);
+	expect_u32_eq(rounded_down, fxp_rounded_down,
+	    "Mistake rounding %s down", str);
+	expect_u32_eq(rounded_nearest, fxp_rounded_nearest,
+	    "Mistake rounding %s to nearest", str);
+}
+
+TEST_BEGIN(test_round_simple) {
+	expect_round("1.5", 1, 2);
+	expect_round("0", 0, 0);
+	expect_round("0.1", 0, 0);
+	expect_round("0.4", 0, 0);
+	expect_round("0.40000", 0, 0);
+	expect_round("0.5", 0, 1);
+	expect_round("0.6", 0, 1);
+	expect_round("123", 123, 123);
+	expect_round("123.4", 123, 123);
+	expect_round("123.5", 123, 124);
+}
+TEST_END
+
+static void
+expect_mul_frac(size_t a, const char *fracstr, size_t expected) {
+	fxp_t frac = xparse_fxp(fracstr);
+	size_t result = fxp_mul_frac(a, frac);
+	expect_true(double_close(expected, result),
+	    "Expected %zu * %s == %zu (fracmul); got %zu", a, fracstr,
+	    expected, result);
+}
+
+TEST_BEGIN(test_mul_frac_simple) {
+	expect_mul_frac(SIZE_MAX, "1.0", SIZE_MAX);
+	expect_mul_frac(SIZE_MAX, ".75", SIZE_MAX / 4 * 3);
+	expect_mul_frac(SIZE_MAX, ".5", SIZE_MAX / 2);
+	expect_mul_frac(SIZE_MAX, ".25", SIZE_MAX / 4);
+	expect_mul_frac(1U << 16, "1.0", 1U << 16);
+	expect_mul_frac(1U << 30, "0.5", 1U << 29);
+	expect_mul_frac(1U << 30, "0.25", 1U << 28);
+	expect_mul_frac(1U << 30, "0.125", 1U << 27);
+	expect_mul_frac((1U << 30) + 1, "0.125", 1U << 27);
+	expect_mul_frac(100, "0.25", 25);
+	expect_mul_frac(1000 * 1000, "0.001", 1000);
+}
+TEST_END
+
+static void
+expect_print(const char *str) {
+	fxp_t fxp = xparse_fxp(str);
+	char buf[FXP_BUF_SIZE];
+	fxp_print(fxp, buf);
+	expect_d_eq(0, strcmp(str, buf), "Couldn't round-trip print %s", str);
+}
+
+TEST_BEGIN(test_print_simple) {
+	expect_print("0.0");
+	expect_print("1.0");
+	expect_print("2.0");
+	expect_print("123.0");
+	/*
+	 * We hit the possibility of roundoff errors whenever the fractional
+	 * component isn't a round binary number; only check these here (we
+	 * round-trip properly in the stress test).
+	 */
+	expect_print("1.5");
+	expect_print("3.375");
+	expect_print("0.25");
+	expect_print("0.125");
+	/* 1 / 2**14 */
+	expect_print("0.00006103515625");
+}
+TEST_END
+
+TEST_BEGIN(test_stress) {
+	const char *numbers[] = {
+		"0.0", "0.1", "0.2", "0.3", "0.4",
+		"0.5", "0.6", "0.7", "0.8", "0.9",
+
+		"1.0", "1.1", "1.2", "1.3", "1.4",
+		"1.5", "1.6", "1.7", "1.8", "1.9",
+
+		"2.0", "2.1", "2.2", "2.3", "2.4",
+		"2.5", "2.6", "2.7", "2.8", "2.9",
+
+		"17.0", "17.1", "17.2", "17.3", "17.4",
+		"17.5", "17.6", "17.7", "17.8", "17.9",
+
+		"18.0", "18.1", "18.2", "18.3", "18.4",
+		"18.5", "18.6", "18.7", "18.8", "18.9",
+
+		"123.0", "123.1", "123.2", "123.3", "123.4",
+		"123.5", "123.6", "123.7", "123.8", "123.9",
+
+		"124.0", "124.1", "124.2", "124.3", "124.4",
+		"124.5", "124.6", "124.7", "124.8", "124.9",
+
+		"125.0", "125.1", "125.2", "125.3", "125.4",
+		"125.5", "125.6", "125.7", "125.8", "125.9"};
+	size_t numbers_len = sizeof(numbers)/sizeof(numbers[0]);
+	for (size_t i = 0; i < numbers_len; i++) {
+		fxp_t fxp_a = xparse_fxp(numbers[i]);
+		double double_a = strtod(numbers[i], NULL);
+
+		uint32_t fxp_rounded_down = fxp_round_down(fxp_a);
+		uint32_t fxp_rounded_nearest = fxp_round_nearest(fxp_a);
+		uint32_t double_rounded_down = (uint32_t)double_a;
+		uint32_t double_rounded_nearest = (uint32_t)round(double_a);
+
+		expect_u32_eq(double_rounded_down, fxp_rounded_down,
+		    "Incorrectly rounded down %s", numbers[i]);
+		expect_u32_eq(double_rounded_nearest, fxp_rounded_nearest,
+		    "Incorrectly rounded-to-nearest %s", numbers[i]);
+
+		for (size_t j = 0; j < numbers_len; j++) {
+			fxp_t fxp_b = xparse_fxp(numbers[j]);
+			double double_b = strtod(numbers[j], NULL);
+
+			fxp_t fxp_sum = fxp_add(fxp_a, fxp_b);
+			double double_sum = double_a + double_b;
+			expect_true(
+			    double_close(fxp2double(fxp_sum), double_sum),
+			    "Miscomputed %s + %s", numbers[i], numbers[j]);
+
+			if (double_a > double_b) {
+				fxp_t fxp_diff = fxp_sub(fxp_a, fxp_b);
+				double double_diff = double_a - double_b;
+				expect_true(
+				    double_close(fxp2double(fxp_diff),
+				    double_diff),
+				    "Miscomputed %s - %s", numbers[i],
+				    numbers[j]);
+			}
+
+			fxp_t fxp_prod = fxp_mul(fxp_a, fxp_b);
+			double double_prod = double_a * double_b;
+			expect_true(
+			    double_close(fxp2double(fxp_prod), double_prod),
+			    "Miscomputed %s * %s", numbers[i], numbers[j]);
+
+			if (double_b != 0.0) {
+				fxp_t fxp_quot = fxp_div(fxp_a, fxp_b);
+				double double_quot = double_a / double_b;
+				expect_true(
+				    double_close(fxp2double(fxp_quot),
+				    double_quot),
+				    "Miscomputed %s / %s", numbers[i],
+				    numbers[j]);
+			}
+		}
+	}
+}
+TEST_END
+
+int
+main(void) {
+	return test_no_reentrancy(
+	    test_parse_valid,
+	    test_parse_invalid,
+	    test_init_percent,
+	    test_add_simple,
+	    test_sub_simple,
+	    test_mul_simple,
+	    test_div_simple,
+	    test_round_simple,
+	    test_mul_frac_simple,
+	    test_print_simple,
+	    test_stress);
+}
diff --git a/deps/jemalloc/test/unit/hash.c b/deps/jemalloc/test/unit/hash.c
new file mode 100644
index 0000000..49f0823
--- /dev/null
+++ b/deps/jemalloc/test/unit/hash.c
@@ -0,0 +1,173 @@
+/*
+ * This file is based on code that is part of SMHasher
+ * (https://code.google.com/p/smhasher/), and is subject to the MIT license
+ * (http://www.opensource.org/licenses/mit-license.php).  Both email addresses
+ * associated with the source code's revision history belong to Austin Appleby,
+ * and the revision history ranges from 2010 to 2012.  Therefore the copyright
+ * and license are here taken to be:
+ *
+ * Copyright (c) 2010-2012 Austin Appleby
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+#include "test/jemalloc_test.h"
+#include "jemalloc/internal/hash.h"
+
+typedef enum {
+	hash_variant_x86_32,
+	hash_variant_x86_128,
+	hash_variant_x64_128
+} hash_variant_t;
+
+static int
+hash_variant_bits(hash_variant_t variant) {
+	switch (variant) {
+	case hash_variant_x86_32: return 32;
+	case hash_variant_x86_128: return 128;
+	case hash_variant_x64_128: return 128;
+	default: not_reached();
+	}
+}
+
+static const char *
+hash_variant_string(hash_variant_t variant) {
+	switch (variant) {
+	case hash_variant_x86_32: return "hash_x86_32";
+	case hash_variant_x86_128: return "hash_x86_128";
+	case hash_variant_x64_128: return "hash_x64_128";
+	default: not_reached();
+	}
+}
+
+#define KEY_SIZE	256
+static void
+hash_variant_verify_key(hash_variant_t variant, uint8_t *key) {
+	const int hashbytes = hash_variant_bits(variant) / 8;
+	const int hashes_size = hashbytes * 256;
+	VARIABLE_ARRAY(uint8_t, hashes, hashes_size);
+	VARIABLE_ARRAY(uint8_t, final, hashbytes);
+	unsigned i;
+	uint32_t computed, expected;
+
+	memset(key, 0, KEY_SIZE);
+	memset(hashes, 0, hashes_size);
+	memset(final, 0, hashbytes);
+
+	/*
+	 * Hash keys of the form {0}, {0,1}, {0,1,2}, ..., {0,1,...,255} as the
+	 * seed.
+	 */
+	for (i = 0; i < 256; i++) {
+		key[i] = (uint8_t)i;
+		switch (variant) {
+		case hash_variant_x86_32: {
+			uint32_t out;
+			out = hash_x86_32(key, i, 256-i);
+			memcpy(&hashes[i*hashbytes], &out, hashbytes);
+			break;
+		} case hash_variant_x86_128: {
+			uint64_t out[2];
+			hash_x86_128(key, i, 256-i, out);
+			memcpy(&hashes[i*hashbytes], out, hashbytes);
+			break;
+		} case hash_variant_x64_128: {
+			uint64_t out[2];
+			hash_x64_128(key, i, 256-i, out);
+			memcpy(&hashes[i*hashbytes], out, hashbytes);
+			break;
+		} default: not_reached();
+		}
+	}
+
+	/* Hash the result array. */
+	switch (variant) {
+	case hash_variant_x86_32: {
+		uint32_t out = hash_x86_32(hashes, hashes_size, 0);
+		memcpy(final, &out, sizeof(out));
+		break;
+	} case hash_variant_x86_128: {
+		uint64_t out[2];
+		hash_x86_128(hashes, hashes_size, 0, out);
+		memcpy(final, out, sizeof(out));
+		break;
+	} case hash_variant_x64_128: {
+		uint64_t out[2];
+		hash_x64_128(hashes, hashes_size, 0, out);
+		memcpy(final, out, sizeof(out));
+		break;
+	} default: not_reached();
+	}
+
+	computed = (final[0] << 0) | (final[1] << 8) | (final[2] << 16) |
+	    (final[3] << 24);
+
+	switch (variant) {
+#ifdef JEMALLOC_BIG_ENDIAN
+	case hash_variant_x86_32: expected = 0x6213303eU; break;
+	case hash_variant_x86_128: expected = 0x266820caU; break;
+	case hash_variant_x64_128: expected = 0xcc622b6fU; break;
+#else
+	case hash_variant_x86_32: expected = 0xb0f57ee3U; break;
+	case hash_variant_x86_128: expected = 0xb3ece62aU; break;
+	case hash_variant_x64_128: expected = 0x6384ba69U; break;
+#endif
+	default: not_reached();
+	}
+
+	expect_u32_eq(computed, expected,
+	    "Hash mismatch for %s(): expected %#x but got %#x",
+	    hash_variant_string(variant), expected, computed);
+}
+
+static void
+hash_variant_verify(hash_variant_t variant) {
+#define MAX_ALIGN	16
+	uint8_t key[KEY_SIZE + (MAX_ALIGN - 1)];
+	unsigned i;
+
+	for (i = 0; i < MAX_ALIGN; i++) {
+		hash_variant_verify_key(variant, &key[i]);
+	}
+#undef MAX_ALIGN
+}
+#undef KEY_SIZE
+
+TEST_BEGIN(test_hash_x86_32) {
+	hash_variant_verify(hash_variant_x86_32);
+}
+TEST_END
+
+TEST_BEGIN(test_hash_x86_128) {
+	hash_variant_verify(hash_variant_x86_128);
+}
+TEST_END
+
+TEST_BEGIN(test_hash_x64_128) {
+	hash_variant_verify(hash_variant_x64_128);
+}
+TEST_END
+
+int
+main(void) {
+	return test(
+	    test_hash_x86_32,
+	    test_hash_x86_128,
+	    test_hash_x64_128);
+}
diff --git a/deps/jemalloc/test/unit/hook.c b/deps/jemalloc/test/unit/hook.c
new file mode 100644
index 0000000..16a6f1b
--- /dev/null
+++ b/deps/jemalloc/test/unit/hook.c
@@ -0,0 +1,586 @@
+#include "test/jemalloc_test.h"
+
+#include "jemalloc/internal/hook.h"
+
+static void *arg_extra;
+static int arg_type;
+static void *arg_result;
+static void *arg_address;
+static size_t arg_old_usize;
+static size_t arg_new_usize;
+static uintptr_t arg_result_raw;
+static uintptr_t arg_args_raw[4];
+
+static int call_count = 0;
+
+static void
+reset_args() {
+	arg_extra = NULL;
+	arg_type = 12345;
+	arg_result = NULL;
+	arg_address = NULL;
+	arg_old_usize = 0;
+	arg_new_usize = 0;
+	arg_result_raw = 0;
+	memset(arg_args_raw, 77, sizeof(arg_args_raw));
+}
+
+static void
+alloc_free_size(size_t sz) {
+	void *ptr = mallocx(1, 0);
+	free(ptr);
+	ptr = mallocx(1, 0);
+	free(ptr);
+	ptr = mallocx(1, MALLOCX_TCACHE_NONE);
+	dallocx(ptr, MALLOCX_TCACHE_NONE);
+}
+
+/*
+ * We want to support a degree of user reentrancy.  This tests a variety of
+ * allocation scenarios.
+ */
+static void
+be_reentrant() {
+	/* Let's make sure the tcache is non-empty if enabled. */
+	alloc_free_size(1);
+	alloc_free_size(1024);
+	alloc_free_size(64 * 1024);
+	alloc_free_size(256 * 1024);
+	alloc_free_size(1024 * 1024);
+
+	/* Some reallocation. */
+	void *ptr = mallocx(129, 0);
+	ptr = rallocx(ptr, 130, 0);
+	free(ptr);
+
+	ptr = mallocx(2 * 1024 * 1024, 0);
+	free(ptr);
+	ptr = mallocx(1 * 1024 * 1024, 0);
+	ptr = rallocx(ptr, 2 * 1024 * 1024, 0);
+	free(ptr);
+
+	ptr = mallocx(1, 0);
+	ptr = rallocx(ptr, 1000, 0);
+	free(ptr);
+}
+
+static void
+set_args_raw(uintptr_t *args_raw, int nargs) {
+	memcpy(arg_args_raw, args_raw, sizeof(uintptr_t) * nargs);
+}
+
+static void
+expect_args_raw(uintptr_t *args_raw_expected, int nargs) {
+	int cmp = memcmp(args_raw_expected, arg_args_raw,
+	    sizeof(uintptr_t) * nargs);
+	expect_d_eq(cmp, 0, "Raw args mismatch");
+}
+
+static void
+reset() {
+	call_count = 0;
+	reset_args();
+}
+
+static void
+test_alloc_hook(void *extra, hook_alloc_t type, void *result,
+    uintptr_t result_raw, uintptr_t args_raw[3]) {
+	call_count++;
+	arg_extra = extra;
+	arg_type = (int)type;
+	arg_result = result;
+	arg_result_raw = result_raw;
+	set_args_raw(args_raw, 3);
+	be_reentrant();
+}
+
+static void
+test_dalloc_hook(void *extra, hook_dalloc_t type, void *address,
+    uintptr_t args_raw[3]) {
+	call_count++;
+	arg_extra = extra;
+	arg_type = (int)type;
+	arg_address = address;
+	set_args_raw(args_raw, 3);
+	be_reentrant();
+}
+
+static void
+test_expand_hook(void *extra, hook_expand_t type, void *address,
+    size_t old_usize, size_t new_usize, uintptr_t result_raw,
+    uintptr_t args_raw[4]) {
+	call_count++;
+	arg_extra = extra;
+	arg_type = (int)type;
+	arg_address = address;
+	arg_old_usize = old_usize;
+	arg_new_usize = new_usize;
+	arg_result_raw = result_raw;
+	set_args_raw(args_raw, 4);
+	be_reentrant();
+}
+
+TEST_BEGIN(test_hooks_basic) {
+	/* Just verify that the record their arguments correctly. */
+	hooks_t hooks = {
+		&test_alloc_hook, &test_dalloc_hook, &test_expand_hook,
+		(void *)111};
+	void *handle = hook_install(TSDN_NULL, &hooks);
+	uintptr_t args_raw[4] = {10, 20, 30, 40};
+
+	/* Alloc */
+	reset_args();
+	hook_invoke_alloc(hook_alloc_posix_memalign, (void *)222, 333,
+	    args_raw);
+	expect_ptr_eq(arg_extra, (void *)111, "Passed wrong user pointer");
+	expect_d_eq((int)hook_alloc_posix_memalign, arg_type,
+	    "Passed wrong alloc type");
+	expect_ptr_eq((void *)222, arg_result, "Passed wrong result address");
+	expect_u64_eq(333, arg_result_raw, "Passed wrong result");
+	expect_args_raw(args_raw, 3);
+
+	/* Dalloc */
+	reset_args();
+	hook_invoke_dalloc(hook_dalloc_sdallocx, (void *)222, args_raw);
+	expect_d_eq((int)hook_dalloc_sdallocx, arg_type,
+	    "Passed wrong dalloc type");
+	expect_ptr_eq((void *)111, arg_extra, "Passed wrong user pointer");
+	expect_ptr_eq((void *)222, arg_address, "Passed wrong address");
+	expect_args_raw(args_raw, 3);
+
+	/* Expand */
+	reset_args();
+	hook_invoke_expand(hook_expand_xallocx, (void *)222, 333, 444, 555,
+	    args_raw);
+	expect_d_eq((int)hook_expand_xallocx, arg_type,
+	    "Passed wrong expand type");
+	expect_ptr_eq((void *)111, arg_extra, "Passed wrong user pointer");
+	expect_ptr_eq((void *)222, arg_address, "Passed wrong address");
+	expect_zu_eq(333, arg_old_usize, "Passed wrong old usize");
+	expect_zu_eq(444, arg_new_usize, "Passed wrong new usize");
+	expect_zu_eq(555, arg_result_raw, "Passed wrong result");
+	expect_args_raw(args_raw, 4);
+
+	hook_remove(TSDN_NULL, handle);
+}
+TEST_END
+
+TEST_BEGIN(test_hooks_null) {
+	/* Null hooks should be ignored, not crash. */
+	hooks_t hooks1 = {NULL, NULL, NULL, NULL};
+	hooks_t hooks2 = {&test_alloc_hook, NULL, NULL, NULL};
+	hooks_t hooks3 = {NULL, &test_dalloc_hook, NULL, NULL};
+	hooks_t hooks4 = {NULL, NULL, &test_expand_hook, NULL};
+
+	void *handle1 = hook_install(TSDN_NULL, &hooks1);
+	void *handle2 = hook_install(TSDN_NULL, &hooks2);
+	void *handle3 = hook_install(TSDN_NULL, &hooks3);
+	void *handle4 = hook_install(TSDN_NULL, &hooks4);
+
+	expect_ptr_ne(handle1, NULL, "Hook installation failed");
+	expect_ptr_ne(handle2, NULL, "Hook installation failed");
+	expect_ptr_ne(handle3, NULL, "Hook installation failed");
+	expect_ptr_ne(handle4, NULL, "Hook installation failed");
+
+	uintptr_t args_raw[4] = {10, 20, 30, 40};
+
+	call_count = 0;
+	hook_invoke_alloc(hook_alloc_malloc, NULL, 0, args_raw);
+	expect_d_eq(call_count, 1, "Called wrong number of times");
+
+	call_count = 0;
+	hook_invoke_dalloc(hook_dalloc_free, NULL, args_raw);
+	expect_d_eq(call_count, 1, "Called wrong number of times");
+
+	call_count = 0;
+	hook_invoke_expand(hook_expand_realloc, NULL, 0, 0, 0, args_raw);
+	expect_d_eq(call_count, 1, "Called wrong number of times");
+
+	hook_remove(TSDN_NULL, handle1);
+	hook_remove(TSDN_NULL, handle2);
+	hook_remove(TSDN_NULL, handle3);
+	hook_remove(TSDN_NULL, handle4);
+}
+TEST_END
+
+TEST_BEGIN(test_hooks_remove) {
+	hooks_t hooks = {&test_alloc_hook, NULL, NULL, NULL};
+	void *handle = hook_install(TSDN_NULL, &hooks);
+	expect_ptr_ne(handle, NULL, "Hook installation failed");
+	call_count = 0;
+	uintptr_t args_raw[4] = {10, 20, 30, 40};
+	hook_invoke_alloc(hook_alloc_malloc, NULL, 0, args_raw);
+	expect_d_eq(call_count, 1, "Hook not invoked");
+
+	call_count = 0;
+	hook_remove(TSDN_NULL, handle);
+	hook_invoke_alloc(hook_alloc_malloc, NULL, 0, NULL);
+	expect_d_eq(call_count, 0, "Hook invoked after removal");
+
+}
+TEST_END
+
+TEST_BEGIN(test_hooks_alloc_simple) {
+	/* "Simple" in the sense that we're not in a realloc variant. */
+	hooks_t hooks = {&test_alloc_hook, NULL, NULL, (void *)123};
+	void *handle = hook_install(TSDN_NULL, &hooks);
+	expect_ptr_ne(handle, NULL, "Hook installation failed");
+
+	/* Stop malloc from being optimized away. */
+	volatile int err;
+	void *volatile ptr;
+
+	/* malloc */
+	reset();
+	ptr = malloc(1);
+	expect_d_eq(call_count, 1, "Hook not called");
+	expect_ptr_eq(arg_extra, (void *)123, "Wrong extra");
+	expect_d_eq(arg_type, (int)hook_alloc_malloc, "Wrong hook type");
+	expect_ptr_eq(ptr, arg_result, "Wrong result");
+	expect_u64_eq((uintptr_t)ptr, (uintptr_t)arg_result_raw,
+	    "Wrong raw result");
+	expect_u64_eq((uintptr_t)1, arg_args_raw[0], "Wrong argument");
+	free(ptr);
+
+	/* posix_memalign */
+	reset();
+	err = posix_memalign((void **)&ptr, 1024, 1);
+	expect_d_eq(call_count, 1, "Hook not called");
+	expect_ptr_eq(arg_extra, (void *)123, "Wrong extra");
+	expect_d_eq(arg_type, (int)hook_alloc_posix_memalign,
+	    "Wrong hook type");
+	expect_ptr_eq(ptr, arg_result, "Wrong result");
+	expect_u64_eq((uintptr_t)err, (uintptr_t)arg_result_raw,
+	    "Wrong raw result");
+	expect_u64_eq((uintptr_t)&ptr, arg_args_raw[0], "Wrong argument");
+	expect_u64_eq((uintptr_t)1024, arg_args_raw[1], "Wrong argument");
+	expect_u64_eq((uintptr_t)1, arg_args_raw[2], "Wrong argument");
+	free(ptr);
+
+	/* aligned_alloc */
+	reset();
+	ptr = aligned_alloc(1024, 1);
+	expect_d_eq(call_count, 1, "Hook not called");
+	expect_ptr_eq(arg_extra, (void *)123, "Wrong extra");
+	expect_d_eq(arg_type, (int)hook_alloc_aligned_alloc,
+	    "Wrong hook type");
+	expect_ptr_eq(ptr, arg_result, "Wrong result");
+	expect_u64_eq((uintptr_t)ptr, (uintptr_t)arg_result_raw,
+	    "Wrong raw result");
+	expect_u64_eq((uintptr_t)1024, arg_args_raw[0], "Wrong argument");
+	expect_u64_eq((uintptr_t)1, arg_args_raw[1], "Wrong argument");
+	free(ptr);
+
+	/* calloc */
+	reset();
+	ptr = calloc(11, 13);
+	expect_d_eq(call_count, 1, "Hook not called");
+	expect_ptr_eq(arg_extra, (void *)123, "Wrong extra");
+	expect_d_eq(arg_type, (int)hook_alloc_calloc, "Wrong hook type");
+	expect_ptr_eq(ptr, arg_result, "Wrong result");
+	expect_u64_eq((uintptr_t)ptr, (uintptr_t)arg_result_raw,
+	    "Wrong raw result");
+	expect_u64_eq((uintptr_t)11, arg_args_raw[0], "Wrong argument");
+	expect_u64_eq((uintptr_t)13, arg_args_raw[1], "Wrong argument");
+	free(ptr);
+
+	/* memalign */
+#ifdef JEMALLOC_OVERRIDE_MEMALIGN
+	reset();
+	ptr = memalign(1024, 1);
+	expect_d_eq(call_count, 1, "Hook not called");
+	expect_ptr_eq(arg_extra, (void *)123, "Wrong extra");
+	expect_d_eq(arg_type, (int)hook_alloc_memalign, "Wrong hook type");
+	expect_ptr_eq(ptr, arg_result, "Wrong result");
+	expect_u64_eq((uintptr_t)ptr, (uintptr_t)arg_result_raw,
+	    "Wrong raw result");
+	expect_u64_eq((uintptr_t)1024, arg_args_raw[0], "Wrong argument");
+	expect_u64_eq((uintptr_t)1, arg_args_raw[1], "Wrong argument");
+	free(ptr);
+#endif /* JEMALLOC_OVERRIDE_MEMALIGN */
+
+	/* valloc */
+#ifdef JEMALLOC_OVERRIDE_VALLOC
+	reset();
+	ptr = valloc(1);
+	expect_d_eq(call_count, 1, "Hook not called");
+	expect_ptr_eq(arg_extra, (void *)123, "Wrong extra");
+	expect_d_eq(arg_type, (int)hook_alloc_valloc, "Wrong hook type");
+	expect_ptr_eq(ptr, arg_result, "Wrong result");
+	expect_u64_eq((uintptr_t)ptr, (uintptr_t)arg_result_raw,
+	    "Wrong raw result");
+	expect_u64_eq((uintptr_t)1, arg_args_raw[0], "Wrong argument");
+	free(ptr);
+#endif /* JEMALLOC_OVERRIDE_VALLOC */
+
+	/* mallocx */
+	reset();
+	ptr = mallocx(1, MALLOCX_LG_ALIGN(10));
+	expect_d_eq(call_count, 1, "Hook not called");
+	expect_ptr_eq(arg_extra, (void *)123, "Wrong extra");
+	expect_d_eq(arg_type, (int)hook_alloc_mallocx, "Wrong hook type");
+	expect_ptr_eq(ptr, arg_result, "Wrong result");
+	expect_u64_eq((uintptr_t)ptr, (uintptr_t)arg_result_raw,
+	    "Wrong raw result");
+	expect_u64_eq((uintptr_t)1, arg_args_raw[0], "Wrong argument");
+	expect_u64_eq((uintptr_t)MALLOCX_LG_ALIGN(10), arg_args_raw[1],
+	    "Wrong flags");
+	free(ptr);
+
+	hook_remove(TSDN_NULL, handle);
+}
+TEST_END
+
+TEST_BEGIN(test_hooks_dalloc_simple) {
+	/* "Simple" in the sense that we're not in a realloc variant. */
+	hooks_t hooks = {NULL, &test_dalloc_hook, NULL, (void *)123};
+	void *handle = hook_install(TSDN_NULL, &hooks);
+	expect_ptr_ne(handle, NULL, "Hook installation failed");
+
+	void *volatile ptr;
+
+	/* free() */
+	reset();
+	ptr = malloc(1);
+	free(ptr);
+	expect_d_eq(call_count, 1, "Hook not called");
+	expect_ptr_eq(arg_extra, (void *)123, "Wrong extra");
+	expect_d_eq(arg_type, (int)hook_dalloc_free, "Wrong hook type");
+	expect_ptr_eq(ptr, arg_address, "Wrong pointer freed");
+	expect_u64_eq((uintptr_t)ptr, arg_args_raw[0], "Wrong raw arg");
+
+	/* dallocx() */
+	reset();
+	ptr = malloc(1);
+	dallocx(ptr, MALLOCX_TCACHE_NONE);
+	expect_d_eq(call_count, 1, "Hook not called");
+	expect_ptr_eq(arg_extra, (void *)123, "Wrong extra");
+	expect_d_eq(arg_type, (int)hook_dalloc_dallocx, "Wrong hook type");
+	expect_ptr_eq(ptr, arg_address, "Wrong pointer freed");
+	expect_u64_eq((uintptr_t)ptr, arg_args_raw[0], "Wrong raw arg");
+	expect_u64_eq((uintptr_t)MALLOCX_TCACHE_NONE, arg_args_raw[1],
+	    "Wrong raw arg");
+
+	/* sdallocx() */
+	reset();
+	ptr = malloc(1);
+	sdallocx(ptr, 1, MALLOCX_TCACHE_NONE);
+	expect_d_eq(call_count, 1, "Hook not called");
+	expect_ptr_eq(arg_extra, (void *)123, "Wrong extra");
+	expect_d_eq(arg_type, (int)hook_dalloc_sdallocx, "Wrong hook type");
+	expect_ptr_eq(ptr, arg_address, "Wrong pointer freed");
+	expect_u64_eq((uintptr_t)ptr, arg_args_raw[0], "Wrong raw arg");
+	expect_u64_eq((uintptr_t)1, arg_args_raw[1], "Wrong raw arg");
+	expect_u64_eq((uintptr_t)MALLOCX_TCACHE_NONE, arg_args_raw[2],
+	    "Wrong raw arg");
+
+	hook_remove(TSDN_NULL, handle);
+}
+TEST_END
+
+TEST_BEGIN(test_hooks_expand_simple) {
+	/* "Simple" in the sense that we're not in a realloc variant. */
+	hooks_t hooks = {NULL, NULL, &test_expand_hook, (void *)123};
+	void *handle = hook_install(TSDN_NULL, &hooks);
+	expect_ptr_ne(handle, NULL, "Hook installation failed");
+
+	void *volatile ptr;
+
+	/* xallocx() */
+	reset();
+	ptr = malloc(1);
+	size_t new_usize = xallocx(ptr, 100, 200, MALLOCX_TCACHE_NONE);
+	expect_d_eq(call_count, 1, "Hook not called");
+	expect_ptr_eq(arg_extra, (void *)123, "Wrong extra");
+	expect_d_eq(arg_type, (int)hook_expand_xallocx, "Wrong hook type");
+	expect_ptr_eq(ptr, arg_address, "Wrong pointer expanded");
+	expect_u64_eq(arg_old_usize, nallocx(1, 0), "Wrong old usize");
+	expect_u64_eq(arg_new_usize, sallocx(ptr, 0), "Wrong new usize");
+	expect_u64_eq(new_usize, arg_result_raw, "Wrong result");
+	expect_u64_eq((uintptr_t)ptr, arg_args_raw[0], "Wrong arg");
+	expect_u64_eq(100, arg_args_raw[1], "Wrong arg");
+	expect_u64_eq(200, arg_args_raw[2], "Wrong arg");
+	expect_u64_eq(MALLOCX_TCACHE_NONE, arg_args_raw[3], "Wrong arg");
+
+	hook_remove(TSDN_NULL, handle);
+}
+TEST_END
+
+TEST_BEGIN(test_hooks_realloc_as_malloc_or_free) {
+	hooks_t hooks = {&test_alloc_hook, &test_dalloc_hook,
+		&test_expand_hook, (void *)123};
+	void *handle = hook_install(TSDN_NULL, &hooks);
+	expect_ptr_ne(handle, NULL, "Hook installation failed");
+
+	void *volatile ptr;
+
+	/* realloc(NULL, size) as malloc */
+	reset();
+	ptr = realloc(NULL, 1);
+	expect_d_eq(call_count, 1, "Hook not called");
+	expect_ptr_eq(arg_extra, (void *)123, "Wrong extra");
+	expect_d_eq(arg_type, (int)hook_alloc_realloc, "Wrong hook type");
+	expect_ptr_eq(ptr, arg_result, "Wrong result");
+	expect_u64_eq((uintptr_t)ptr, (uintptr_t)arg_result_raw,
+	    "Wrong raw result");
+	expect_u64_eq((uintptr_t)NULL, arg_args_raw[0], "Wrong argument");
+	expect_u64_eq((uintptr_t)1, arg_args_raw[1], "Wrong argument");
+	free(ptr);
+
+	/* realloc(ptr, 0) as free */
+	if (opt_zero_realloc_action == zero_realloc_action_free) {
+		ptr = malloc(1);
+		reset();
+		realloc(ptr, 0);
+		expect_d_eq(call_count, 1, "Hook not called");
+		expect_ptr_eq(arg_extra, (void *)123, "Wrong extra");
+		expect_d_eq(arg_type, (int)hook_dalloc_realloc,
+		    "Wrong hook type");
+		expect_ptr_eq(ptr, arg_address,
+		    "Wrong pointer freed");
+		expect_u64_eq((uintptr_t)ptr, arg_args_raw[0],
+		    "Wrong raw arg");
+		expect_u64_eq((uintptr_t)0, arg_args_raw[1],
+		    "Wrong raw arg");
+	}
+
+	/* realloc(NULL, 0) as malloc(0) */
+	reset();
+	ptr = realloc(NULL, 0);
+	expect_d_eq(call_count, 1, "Hook not called");
+	expect_ptr_eq(arg_extra, (void *)123, "Wrong extra");
+	expect_d_eq(arg_type, (int)hook_alloc_realloc, "Wrong hook type");
+	expect_ptr_eq(ptr, arg_result, "Wrong result");
+	expect_u64_eq((uintptr_t)ptr, (uintptr_t)arg_result_raw,
+	    "Wrong raw result");
+	expect_u64_eq((uintptr_t)NULL, arg_args_raw[0], "Wrong argument");
+	expect_u64_eq((uintptr_t)0, arg_args_raw[1], "Wrong argument");
+	free(ptr);
+
+	hook_remove(TSDN_NULL, handle);
+}
+TEST_END
+
+static void
+do_realloc_test(void *(*ralloc)(void *, size_t, int), int flags,
+    int expand_type, int dalloc_type) {
+	hooks_t hooks = {&test_alloc_hook, &test_dalloc_hook,
+		&test_expand_hook, (void *)123};
+	void *handle = hook_install(TSDN_NULL, &hooks);
+	expect_ptr_ne(handle, NULL, "Hook installation failed");
+
+	void *volatile ptr;
+	void *volatile ptr2;
+
+	/* Realloc in-place, small. */
+	ptr = malloc(129);
+	reset();
+	ptr2 = ralloc(ptr, 130, flags);
+	expect_ptr_eq(ptr, ptr2, "Small realloc moved");
+
+	expect_d_eq(call_count, 1, "Hook not called");
+	expect_ptr_eq(arg_extra, (void *)123, "Wrong extra");
+	expect_d_eq(arg_type, expand_type, "Wrong hook type");
+	expect_ptr_eq(ptr, arg_address, "Wrong address");
+	expect_u64_eq((uintptr_t)ptr, (uintptr_t)arg_result_raw,
+	    "Wrong raw result");
+	expect_u64_eq((uintptr_t)ptr, arg_args_raw[0], "Wrong argument");
+	expect_u64_eq((uintptr_t)130, arg_args_raw[1], "Wrong argument");
+	free(ptr);
+
+	/*
+	 * Realloc in-place, large.  Since we can't guarantee the large case
+	 * across all platforms, we stay resilient to moving results.
+	 */
+	ptr = malloc(2 * 1024 * 1024);
+	free(ptr);
+	ptr2 = malloc(1 * 1024 * 1024);
+	reset();
+	ptr = ralloc(ptr2, 2 * 1024 * 1024, flags);
+	/* ptr is the new address, ptr2 is the old address. */
+	if (ptr == ptr2) {
+		expect_d_eq(call_count, 1, "Hook not called");
+		expect_d_eq(arg_type, expand_type, "Wrong hook type");
+	} else {
+		expect_d_eq(call_count, 2, "Wrong hooks called");
+		expect_ptr_eq(ptr, arg_result, "Wrong address");
+		expect_d_eq(arg_type, dalloc_type, "Wrong hook type");
+	}
+	expect_ptr_eq(arg_extra, (void *)123, "Wrong extra");
+	expect_ptr_eq(ptr2, arg_address, "Wrong address");
+	expect_u64_eq((uintptr_t)ptr, (uintptr_t)arg_result_raw,
+	    "Wrong raw result");
+	expect_u64_eq((uintptr_t)ptr2, arg_args_raw[0], "Wrong argument");
+	expect_u64_eq((uintptr_t)2 * 1024 * 1024, arg_args_raw[1],
+	    "Wrong argument");
+	free(ptr);
+
+	/* Realloc with move, small. */
+	ptr = malloc(8);
+	reset();
+	ptr2 = ralloc(ptr, 128, flags);
+	expect_ptr_ne(ptr, ptr2, "Small realloc didn't move");
+
+	expect_d_eq(call_count, 2, "Hook not called");
+	expect_ptr_eq(arg_extra, (void *)123, "Wrong extra");
+	expect_d_eq(arg_type, dalloc_type, "Wrong hook type");
+	expect_ptr_eq(ptr, arg_address, "Wrong address");
+	expect_ptr_eq(ptr2, arg_result, "Wrong address");
+	expect_u64_eq((uintptr_t)ptr2, (uintptr_t)arg_result_raw,
+	    "Wrong raw result");
+	expect_u64_eq((uintptr_t)ptr, arg_args_raw[0], "Wrong argument");
+	expect_u64_eq((uintptr_t)128, arg_args_raw[1], "Wrong argument");
+	free(ptr2);
+
+	/* Realloc with move, large. */
+	ptr = malloc(1);
+	reset();
+	ptr2 = ralloc(ptr, 2 * 1024 * 1024, flags);
+	expect_ptr_ne(ptr, ptr2, "Large realloc didn't move");
+
+	expect_d_eq(call_count, 2, "Hook not called");
+	expect_ptr_eq(arg_extra, (void *)123, "Wrong extra");
+	expect_d_eq(arg_type, dalloc_type, "Wrong hook type");
+	expect_ptr_eq(ptr, arg_address, "Wrong address");
+	expect_ptr_eq(ptr2, arg_result, "Wrong address");
+	expect_u64_eq((uintptr_t)ptr2, (uintptr_t)arg_result_raw,
+	    "Wrong raw result");
+	expect_u64_eq((uintptr_t)ptr, arg_args_raw[0], "Wrong argument");
+	expect_u64_eq((uintptr_t)2 * 1024 * 1024, arg_args_raw[1],
+	    "Wrong argument");
+	free(ptr2);
+
+	hook_remove(TSDN_NULL, handle);
+}
+
+static void *
+realloc_wrapper(void *ptr, size_t size, UNUSED int flags) {
+	return realloc(ptr, size);
+}
+
+TEST_BEGIN(test_hooks_realloc) {
+	do_realloc_test(&realloc_wrapper, 0, hook_expand_realloc,
+	    hook_dalloc_realloc);
+}
+TEST_END
+
+TEST_BEGIN(test_hooks_rallocx) {
+	do_realloc_test(&rallocx, MALLOCX_TCACHE_NONE, hook_expand_rallocx,
+	    hook_dalloc_rallocx);
+}
+TEST_END
+
+int
+main(void) {
+	/* We assert on call counts. */
+	return test_no_reentrancy(
+	    test_hooks_basic,
+	    test_hooks_null,
+	    test_hooks_remove,
+	    test_hooks_alloc_simple,
+	    test_hooks_dalloc_simple,
+	    test_hooks_expand_simple,
+	    test_hooks_realloc_as_malloc_or_free,
+	    test_hooks_realloc,
+	    test_hooks_rallocx);
+}
diff --git a/deps/jemalloc/test/unit/hpa.c b/deps/jemalloc/test/unit/hpa.c
new file mode 100644
index 0000000..dfd57f3
--- /dev/null
+++ b/deps/jemalloc/test/unit/hpa.c
@@ -0,0 +1,459 @@
+#include "test/jemalloc_test.h"
+
+#include "jemalloc/internal/hpa.h"
+#include "jemalloc/internal/nstime.h"
+
+#define SHARD_IND 111
+
+#define ALLOC_MAX (HUGEPAGE / 4)
+
+typedef struct test_data_s test_data_t;
+struct test_data_s {
+	/*
+	 * Must be the first member -- we convert back and forth between the
+	 * test_data_t and the hpa_shard_t;
+	 */
+	hpa_shard_t shard;
+	hpa_central_t central;
+	base_t *base;
+	edata_cache_t shard_edata_cache;
+
+	emap_t emap;
+};
+
+static hpa_shard_opts_t test_hpa_shard_opts_default = {
+	/* slab_max_alloc */
+	ALLOC_MAX,
+	/* hugification threshold */
+	HUGEPAGE,
+	/* dirty_mult */
+	FXP_INIT_PERCENT(25),
+	/* deferral_allowed */
+	false,
+	/* hugify_delay_ms */
+	10 * 1000,
+};
+
+static hpa_shard_t *
+create_test_data(hpa_hooks_t *hooks, hpa_shard_opts_t *opts) {
+	bool err;
+	base_t *base = base_new(TSDN_NULL, /* ind */ SHARD_IND,
+	    &ehooks_default_extent_hooks, /* metadata_use_hooks */ true);
+	assert_ptr_not_null(base, "");
+
+	test_data_t *test_data = malloc(sizeof(test_data_t));
+	assert_ptr_not_null(test_data, "");
+
+	test_data->base = base;
+
+	err = edata_cache_init(&test_data->shard_edata_cache, base);
+	assert_false(err, "");
+
+	err = emap_init(&test_data->emap, test_data->base, /* zeroed */ false);
+	assert_false(err, "");
+
+	err = hpa_central_init(&test_data->central, test_data->base, hooks);
+	assert_false(err, "");
+
+	err = hpa_shard_init(&test_data->shard, &test_data->central,
+	    &test_data->emap, test_data->base, &test_data->shard_edata_cache,
+	    SHARD_IND, opts);
+	assert_false(err, "");
+
+	return (hpa_shard_t *)test_data;
+}
+
+static void
+destroy_test_data(hpa_shard_t *shard) {
+	test_data_t *test_data = (test_data_t *)shard;
+	base_delete(TSDN_NULL, test_data->base);
+	free(test_data);
+}
+
+TEST_BEGIN(test_alloc_max) {
+	test_skip_if(!hpa_supported());
+
+	hpa_shard_t *shard = create_test_data(&hpa_hooks_default,
+	    &test_hpa_shard_opts_default);
+	tsdn_t *tsdn = tsd_tsdn(tsd_fetch());
+
+	edata_t *edata;
+
+	/* Small max */
+	bool deferred_work_generated = false;
+	edata = pai_alloc(tsdn, &shard->pai, ALLOC_MAX, PAGE, false, false,
+	    false, &deferred_work_generated);
+	expect_ptr_not_null(edata, "Allocation of small max failed");
+	edata = pai_alloc(tsdn, &shard->pai, ALLOC_MAX + PAGE, PAGE, false,
+	    false, false, &deferred_work_generated);
+	expect_ptr_null(edata, "Allocation of larger than small max succeeded");
+
+	destroy_test_data(shard);
+}
+TEST_END
+
+typedef struct mem_contents_s mem_contents_t;
+struct mem_contents_s {
+	uintptr_t my_addr;
+	size_t size;
+	edata_t *my_edata;
+	rb_node(mem_contents_t) link;
+};
+
+static int
+mem_contents_cmp(const mem_contents_t *a, const mem_contents_t *b) {
+	return (a->my_addr > b->my_addr) - (a->my_addr < b->my_addr);
+}
+
+typedef rb_tree(mem_contents_t) mem_tree_t;
+rb_gen(static, mem_tree_, mem_tree_t, mem_contents_t, link,
+    mem_contents_cmp);
+
+static void
+node_assert_ordered(mem_contents_t *a, mem_contents_t *b) {
+	assert_zu_lt(a->my_addr, a->my_addr + a->size, "Overflow");
+	assert_zu_le(a->my_addr + a->size, b->my_addr, "");
+}
+
+static void
+node_check(mem_tree_t *tree, mem_contents_t *contents) {
+	edata_t *edata = contents->my_edata;
+	assert_ptr_eq(contents, (void *)contents->my_addr, "");
+	assert_ptr_eq(contents, edata_base_get(edata), "");
+	assert_zu_eq(contents->size, edata_size_get(edata), "");
+	assert_ptr_eq(contents->my_edata, edata, "");
+
+	mem_contents_t *next = mem_tree_next(tree, contents);
+	if (next != NULL) {
+		node_assert_ordered(contents, next);
+	}
+	mem_contents_t *prev = mem_tree_prev(tree, contents);
+	if (prev != NULL) {
+		node_assert_ordered(prev, contents);
+	}
+}
+
+static void
+node_insert(mem_tree_t *tree, edata_t *edata, size_t npages) {
+	mem_contents_t *contents = (mem_contents_t *)edata_base_get(edata);
+	contents->my_addr = (uintptr_t)edata_base_get(edata);
+	contents->size = edata_size_get(edata);
+	contents->my_edata = edata;
+	mem_tree_insert(tree, contents);
+	node_check(tree, contents);
+}
+
+static void
+node_remove(mem_tree_t *tree, edata_t *edata) {
+	mem_contents_t *contents = (mem_contents_t *)edata_base_get(edata);
+	node_check(tree, contents);
+	mem_tree_remove(tree, contents);
+}
+
+TEST_BEGIN(test_stress) {
+	test_skip_if(!hpa_supported());
+
+	hpa_shard_t *shard = create_test_data(&hpa_hooks_default,
+	    &test_hpa_shard_opts_default);
+
+	tsdn_t *tsdn = tsd_tsdn(tsd_fetch());
+
+	const size_t nlive_edatas_max = 500;
+	size_t nlive_edatas = 0;
+	edata_t **live_edatas = calloc(nlive_edatas_max, sizeof(edata_t *));
+	/*
+	 * Nothing special about this constant; we're only fixing it for
+	 * consistency across runs.
+	 */
+	size_t prng_state = (size_t)0x76999ffb014df07c;
+
+	mem_tree_t tree;
+	mem_tree_new(&tree);
+
+	bool deferred_work_generated = false;
+
+	for (size_t i = 0; i < 100 * 1000; i++) {
+		size_t operation = prng_range_zu(&prng_state, 2);
+		if (operation == 0) {
+			/* Alloc */
+			if (nlive_edatas == nlive_edatas_max) {
+				continue;
+			}
+
+			/*
+			 * We make sure to get an even balance of small and
+			 * large allocations.
+			 */
+			size_t npages_min = 1;
+			size_t npages_max = ALLOC_MAX / PAGE;
+			size_t npages = npages_min + prng_range_zu(&prng_state,
+			    npages_max - npages_min);
+			edata_t *edata = pai_alloc(tsdn, &shard->pai,
+			    npages * PAGE, PAGE, false, false, false,
+			    &deferred_work_generated);
+			assert_ptr_not_null(edata,
+			    "Unexpected allocation failure");
+			live_edatas[nlive_edatas] = edata;
+			nlive_edatas++;
+			node_insert(&tree, edata, npages);
+		} else {
+			/* Free. */
+			if (nlive_edatas == 0) {
+				continue;
+			}
+			size_t victim = prng_range_zu(&prng_state, nlive_edatas);
+			edata_t *to_free = live_edatas[victim];
+			live_edatas[victim] = live_edatas[nlive_edatas - 1];
+			nlive_edatas--;
+			node_remove(&tree, to_free);
+			pai_dalloc(tsdn, &shard->pai, to_free,
+			    &deferred_work_generated);
+		}
+	}
+
+	size_t ntreenodes = 0;
+	for (mem_contents_t *contents = mem_tree_first(&tree); contents != NULL;
+	    contents = mem_tree_next(&tree, contents)) {
+		ntreenodes++;
+		node_check(&tree, contents);
+	}
+	expect_zu_eq(ntreenodes, nlive_edatas, "");
+
+	/*
+	 * Test hpa_shard_destroy, which requires as a precondition that all its
+	 * extents have been deallocated.
+	 */
+	for (size_t i = 0; i < nlive_edatas; i++) {
+		edata_t *to_free = live_edatas[i];
+		node_remove(&tree, to_free);
+		pai_dalloc(tsdn, &shard->pai, to_free,
+		    &deferred_work_generated);
+	}
+	hpa_shard_destroy(tsdn, shard);
+
+	free(live_edatas);
+	destroy_test_data(shard);
+}
+TEST_END
+
+static void
+expect_contiguous(edata_t **edatas, size_t nedatas) {
+	for (size_t i = 0; i < nedatas; i++) {
+		size_t expected = (size_t)edata_base_get(edatas[0])
+		    + i * PAGE;
+		expect_zu_eq(expected, (size_t)edata_base_get(edatas[i]),
+		    "Mismatch at index %zu", i);
+	}
+}
+
+TEST_BEGIN(test_alloc_dalloc_batch) {
+	test_skip_if(!hpa_supported());
+
+	hpa_shard_t *shard = create_test_data(&hpa_hooks_default,
+	    &test_hpa_shard_opts_default);
+	tsdn_t *tsdn = tsd_tsdn(tsd_fetch());
+
+	bool deferred_work_generated = false;
+
+	enum {NALLOCS = 8};
+
+	edata_t *allocs[NALLOCS];
+	/*
+	 * Allocate a mix of ways; first half from regular alloc, second half
+	 * from alloc_batch.
+	 */
+	for (size_t i = 0; i < NALLOCS / 2; i++) {
+		allocs[i] = pai_alloc(tsdn, &shard->pai, PAGE, PAGE,
+		    /* zero */ false, /* guarded */ false,
+		    /* frequent_reuse */ false, &deferred_work_generated);
+		expect_ptr_not_null(allocs[i], "Unexpected alloc failure");
+	}
+	edata_list_active_t allocs_list;
+	edata_list_active_init(&allocs_list);
+	size_t nsuccess = pai_alloc_batch(tsdn, &shard->pai, PAGE, NALLOCS / 2,
+	    &allocs_list, &deferred_work_generated);
+	expect_zu_eq(NALLOCS / 2, nsuccess, "Unexpected oom");
+	for (size_t i = NALLOCS / 2; i < NALLOCS; i++) {
+		allocs[i] = edata_list_active_first(&allocs_list);
+		edata_list_active_remove(&allocs_list, allocs[i]);
+	}
+
+	/*
+	 * Should have allocated them contiguously, despite the differing
+	 * methods used.
+	 */
+	void *orig_base = edata_base_get(allocs[0]);
+	expect_contiguous(allocs, NALLOCS);
+
+	/*
+	 * Batch dalloc the first half, individually deallocate the second half.
+	 */
+	for (size_t i = 0; i < NALLOCS / 2; i++) {
+		edata_list_active_append(&allocs_list, allocs[i]);
+	}
+	pai_dalloc_batch(tsdn, &shard->pai, &allocs_list,
+	    &deferred_work_generated);
+	for (size_t i = NALLOCS / 2; i < NALLOCS; i++) {
+		pai_dalloc(tsdn, &shard->pai, allocs[i],
+		    &deferred_work_generated);
+	}
+
+	/* Reallocate (individually), and ensure reuse and contiguity. */
+	for (size_t i = 0; i < NALLOCS; i++) {
+		allocs[i] = pai_alloc(tsdn, &shard->pai, PAGE, PAGE,
+		    /* zero */ false, /* guarded */ false, /* frequent_reuse */
+		    false, &deferred_work_generated);
+		expect_ptr_not_null(allocs[i], "Unexpected alloc failure.");
+	}
+	void *new_base = edata_base_get(allocs[0]);
+	expect_ptr_eq(orig_base, new_base,
+	    "Failed to reuse the allocated memory.");
+	expect_contiguous(allocs, NALLOCS);
+
+	destroy_test_data(shard);
+}
+TEST_END
+
+static uintptr_t defer_bump_ptr = HUGEPAGE * 123;
+static void *
+defer_test_map(size_t size) {
+	void *result = (void *)defer_bump_ptr;
+	defer_bump_ptr += size;
+	return result;
+}
+
+static void
+defer_test_unmap(void *ptr, size_t size) {
+	(void)ptr;
+	(void)size;
+}
+
+static bool defer_purge_called = false;
+static void
+defer_test_purge(void *ptr, size_t size) {
+	(void)ptr;
+	(void)size;
+	defer_purge_called = true;
+}
+
+static bool defer_hugify_called = false;
+static void
+defer_test_hugify(void *ptr, size_t size) {
+	defer_hugify_called = true;
+}
+
+static bool defer_dehugify_called = false;
+static void
+defer_test_dehugify(void *ptr, size_t size) {
+	defer_dehugify_called = true;
+}
+
+static nstime_t defer_curtime;
+static void
+defer_test_curtime(nstime_t *r_time, bool first_reading) {
+	*r_time = defer_curtime;
+}
+
+static uint64_t
+defer_test_ms_since(nstime_t *past_time) {
+	return (nstime_ns(&defer_curtime) - nstime_ns(past_time)) / 1000 / 1000;
+}
+
+TEST_BEGIN(test_defer_time) {
+	test_skip_if(!hpa_supported());
+
+	hpa_hooks_t hooks;
+	hooks.map = &defer_test_map;
+	hooks.unmap = &defer_test_unmap;
+	hooks.purge = &defer_test_purge;
+	hooks.hugify = &defer_test_hugify;
+	hooks.dehugify = &defer_test_dehugify;
+	hooks.curtime = &defer_test_curtime;
+	hooks.ms_since = &defer_test_ms_since;
+
+	hpa_shard_opts_t opts = test_hpa_shard_opts_default;
+	opts.deferral_allowed = true;
+
+	hpa_shard_t *shard = create_test_data(&hooks, &opts);
+
+	bool deferred_work_generated = false;
+
+	nstime_init(&defer_curtime, 0);
+	tsdn_t *tsdn = tsd_tsdn(tsd_fetch());
+	edata_t *edatas[HUGEPAGE_PAGES];
+	for (int i = 0; i < (int)HUGEPAGE_PAGES; i++) {
+		edatas[i] = pai_alloc(tsdn, &shard->pai, PAGE, PAGE, false,
+		    false, false, &deferred_work_generated);
+		expect_ptr_not_null(edatas[i], "Unexpected null edata");
+	}
+	hpa_shard_do_deferred_work(tsdn, shard);
+	expect_false(defer_hugify_called, "Hugified too early");
+
+	/* Hugification delay is set to 10 seconds in options. */
+	nstime_init2(&defer_curtime, 11, 0);
+	hpa_shard_do_deferred_work(tsdn, shard);
+	expect_true(defer_hugify_called, "Failed to hugify");
+
+	defer_hugify_called = false;
+
+	/* Purge.  Recall that dirty_mult is .25. */
+	for (int i = 0; i < (int)HUGEPAGE_PAGES / 2; i++) {
+		pai_dalloc(tsdn, &shard->pai, edatas[i],
+		    &deferred_work_generated);
+	}
+
+	hpa_shard_do_deferred_work(tsdn, shard);
+
+	expect_false(defer_hugify_called, "Hugified too early");
+	expect_true(defer_dehugify_called, "Should have dehugified");
+	expect_true(defer_purge_called, "Should have purged");
+	defer_hugify_called = false;
+	defer_dehugify_called = false;
+	defer_purge_called = false;
+
+	/*
+	 * Refill the page.  We now meet the hugification threshold; we should
+	 * be marked for pending hugify.
+	 */
+	for (int i = 0; i < (int)HUGEPAGE_PAGES / 2; i++) {
+		edatas[i] = pai_alloc(tsdn, &shard->pai, PAGE, PAGE, false,
+		    false, false, &deferred_work_generated);
+		expect_ptr_not_null(edatas[i], "Unexpected null edata");
+	}
+	/*
+	 * We would be ineligible for hugification, had we not already met the
+	 * threshold before dipping below it.
+	 */
+	pai_dalloc(tsdn, &shard->pai, edatas[0],
+	    &deferred_work_generated);
+	/* Wait for the threshold again. */
+	nstime_init2(&defer_curtime, 22, 0);
+	hpa_shard_do_deferred_work(tsdn, shard);
+	expect_true(defer_hugify_called, "Hugified too early");
+	expect_false(defer_dehugify_called, "Unexpected dehugify");
+	expect_false(defer_purge_called, "Unexpected purge");
+
+	destroy_test_data(shard);
+}
+TEST_END
+
+int
+main(void) {
+	/*
+	 * These trigger unused-function warnings on CI runs, even if declared
+	 * with static inline.
+	 */
+	(void)mem_tree_empty;
+	(void)mem_tree_last;
+	(void)mem_tree_search;
+	(void)mem_tree_nsearch;
+	(void)mem_tree_psearch;
+	(void)mem_tree_iter;
+	(void)mem_tree_reverse_iter;
+	(void)mem_tree_destroy;
+	return test_no_reentrancy(
+	    test_alloc_max,
+	    test_stress,
+	    test_alloc_dalloc_batch,
+	    test_defer_time);
+}
diff --git a/deps/jemalloc/test/unit/hpa_background_thread.c b/deps/jemalloc/test/unit/hpa_background_thread.c
new file mode 100644
index 0000000..81c2561
--- /dev/null
+++ b/deps/jemalloc/test/unit/hpa_background_thread.c
@@ -0,0 +1,188 @@
+#include "test/jemalloc_test.h"
+#include "test/sleep.h"
+
+static void
+sleep_for_background_thread_interval() {
+	/*
+	 * The sleep interval set in our .sh file is 50ms.  So it likely will
+	 * run if we sleep for four times that.
+	 */
+	sleep_ns(200 * 1000 * 1000);
+}
+
+static unsigned
+create_arena() {
+	unsigned arena_ind;
+	size_t sz;
+
+	sz = sizeof(unsigned);
+	expect_d_eq(mallctl("arenas.create", (void *)&arena_ind, &sz, NULL, 2),
+	    0, "Unexpected mallctl() failure");
+	return arena_ind;
+}
+
+static size_t
+get_empty_ndirty(unsigned arena_ind) {
+	int err;
+	size_t ndirty_huge;
+	size_t ndirty_nonhuge;
+	uint64_t epoch = 1;
+	size_t sz = sizeof(epoch);
+	err = je_mallctl("epoch", (void *)&epoch, &sz, (void *)&epoch,
+	    sizeof(epoch));
+	expect_d_eq(0, err, "Unexpected mallctl() failure");
+
+	size_t mib[6];
+	size_t miblen = sizeof(mib)/sizeof(mib[0]);
+	err = mallctlnametomib(
+	    "stats.arenas.0.hpa_shard.empty_slabs.ndirty_nonhuge", mib,
+	    &miblen);
+	expect_d_eq(0, err, "Unexpected mallctlnametomib() failure");
+
+	sz = sizeof(ndirty_nonhuge);
+	mib[2] = arena_ind;
+	err = mallctlbymib(mib, miblen, &ndirty_nonhuge, &sz, NULL, 0);
+	expect_d_eq(0, err, "Unexpected mallctlbymib() failure");
+
+	err = mallctlnametomib(
+	    "stats.arenas.0.hpa_shard.empty_slabs.ndirty_huge", mib,
+	    &miblen);
+	expect_d_eq(0, err, "Unexpected mallctlnametomib() failure");
+
+	sz = sizeof(ndirty_huge);
+	mib[2] = arena_ind;
+	err = mallctlbymib(mib, miblen, &ndirty_huge, &sz, NULL, 0);
+	expect_d_eq(0, err, "Unexpected mallctlbymib() failure");
+
+	return ndirty_huge + ndirty_nonhuge;
+}
+
+static void
+set_background_thread_enabled(bool enabled) {
+	int err;
+	err = je_mallctl("background_thread", NULL, NULL, &enabled,
+	    sizeof(enabled));
+	expect_d_eq(0, err, "Unexpected mallctl failure");
+}
+
+static void
+wait_until_thread_is_enabled(unsigned arena_id) {
+	tsd_t* tsd = tsd_fetch();
+
+	bool sleeping = false;
+	int iterations = 0;
+	do {
+		background_thread_info_t *info =
+		    background_thread_info_get(arena_id);
+		malloc_mutex_lock(tsd_tsdn(tsd), &info->mtx);
+		malloc_mutex_unlock(tsd_tsdn(tsd), &info->mtx);
+		sleeping = background_thread_indefinite_sleep(info);
+		assert_d_lt(iterations, UINT64_C(1000000),
+		    "Waiting for a thread to start for too long");
+	} while (!sleeping);
+}
+
+static void
+expect_purging(unsigned arena_ind, bool expect_deferred) {
+	size_t empty_ndirty;
+
+	empty_ndirty = get_empty_ndirty(arena_ind);
+	expect_zu_eq(0, empty_ndirty, "Expected arena to start unused.");
+
+	/*
+	 * It's possible that we get unlucky with our stats collection timing,
+	 * and the background thread runs in between the deallocation and the
+	 * stats collection.  So we retry 10 times, and see if we *ever* see
+	 * deferred reclamation.
+	 */
+	bool observed_dirty_page = false;
+	for (int i = 0; i < 10; i++) {
+		void *ptr = mallocx(PAGE,
+		    MALLOCX_TCACHE_NONE | MALLOCX_ARENA(arena_ind));
+		empty_ndirty = get_empty_ndirty(arena_ind);
+		expect_zu_eq(0, empty_ndirty, "All pages should be active");
+		dallocx(ptr, MALLOCX_TCACHE_NONE);
+		empty_ndirty = get_empty_ndirty(arena_ind);
+		if (expect_deferred) {
+			expect_true(empty_ndirty == 0 || empty_ndirty == 1 ||
+			    opt_prof, "Unexpected extra dirty page count: %zu",
+			    empty_ndirty);
+		} else {
+			assert_zu_eq(0, empty_ndirty,
+			    "Saw dirty pages without deferred purging");
+		}
+		if (empty_ndirty > 0) {
+			observed_dirty_page = true;
+			break;
+		}
+	}
+	expect_b_eq(expect_deferred, observed_dirty_page, "");
+
+	/*
+	 * Under high concurrency / heavy test load (e.g. using run_test.sh),
+	 * the background thread may not get scheduled for a longer period of
+	 * time.  Retry 100 times max before bailing out.
+	 */
+	unsigned retry = 0;
+	while ((empty_ndirty = get_empty_ndirty(arena_ind)) > 0 &&
+	    expect_deferred && (retry++ < 100)) {
+		sleep_for_background_thread_interval();
+	}
+
+	expect_zu_eq(0, empty_ndirty, "Should have seen a background purge");
+}
+
+TEST_BEGIN(test_hpa_background_thread_purges) {
+	test_skip_if(!config_stats);
+	test_skip_if(!hpa_supported());
+	test_skip_if(!have_background_thread);
+	/* Skip since guarded pages cannot be allocated from hpa. */
+	test_skip_if(san_guard_enabled());
+
+	unsigned arena_ind = create_arena();
+	/*
+	 * Our .sh sets dirty mult to 0, so all dirty pages should get purged
+	 * any time any thread frees.
+	 */
+	expect_purging(arena_ind, /* expect_deferred */ true);
+}
+TEST_END
+
+TEST_BEGIN(test_hpa_background_thread_enable_disable) {
+	test_skip_if(!config_stats);
+	test_skip_if(!hpa_supported());
+	test_skip_if(!have_background_thread);
+	/* Skip since guarded pages cannot be allocated from hpa. */
+	test_skip_if(san_guard_enabled());
+
+	unsigned arena_ind = create_arena();
+
+	set_background_thread_enabled(false);
+	expect_purging(arena_ind, false);
+
+	set_background_thread_enabled(true);
+	wait_until_thread_is_enabled(arena_ind);
+	expect_purging(arena_ind, true);
+}
+TEST_END
+
+int
+main(void) {
+	/*
+	 * OK, this is a sort of nasty hack.  We don't want to add *another*
+	 * config option for HPA (the intent is that it becomes available on
+	 * more platforms over time, and we're trying to prune back config
+	 * options generally.  But we'll get initialization errors on other
+	 * platforms if we set hpa:true in the MALLOC_CONF (even if we set
+	 * abort_conf:false as well).  So we reach into the internals and set
+	 * them directly, but only if we know that we're actually going to do
+	 * something nontrivial in the tests.
+	 */
+	if (config_stats && hpa_supported() && have_background_thread) {
+		opt_hpa = true;
+		opt_background_thread = true;
+	}
+	return test_no_reentrancy(
+	    test_hpa_background_thread_purges,
+	    test_hpa_background_thread_enable_disable);
+}
diff --git a/deps/jemalloc/test/unit/hpa_background_thread.sh b/deps/jemalloc/test/unit/hpa_background_thread.sh
new file mode 100644
index 0000000..65a56a0
--- /dev/null
+++ b/deps/jemalloc/test/unit/hpa_background_thread.sh
@@ -0,0 +1,4 @@
+#!/bin/sh
+
+export MALLOC_CONF="hpa_dirty_mult:0,hpa_min_purge_interval_ms:50,hpa_sec_nshards:0"
+
diff --git a/deps/jemalloc/test/unit/hpdata.c b/deps/jemalloc/test/unit/hpdata.c
new file mode 100644
index 0000000..288e71d
--- /dev/null
+++ b/deps/jemalloc/test/unit/hpdata.c
@@ -0,0 +1,244 @@
+#include "test/jemalloc_test.h"
+
+#define HPDATA_ADDR ((void *)(10 * HUGEPAGE))
+#define HPDATA_AGE 123
+
+TEST_BEGIN(test_reserve_alloc) {
+	hpdata_t hpdata;
+	hpdata_init(&hpdata, HPDATA_ADDR, HPDATA_AGE);
+
+	/* Allocating a page at a time, we should do first fit. */
+	for (size_t i = 0; i < HUGEPAGE_PAGES; i++) {
+		expect_true(hpdata_consistent(&hpdata), "");
+		expect_zu_eq(HUGEPAGE_PAGES - i,
+		    hpdata_longest_free_range_get(&hpdata), "");
+		void *alloc = hpdata_reserve_alloc(&hpdata, PAGE);
+		expect_ptr_eq((char *)HPDATA_ADDR + i * PAGE, alloc, "");
+		expect_true(hpdata_consistent(&hpdata), "");
+	}
+	expect_true(hpdata_consistent(&hpdata), "");
+	expect_zu_eq(0, hpdata_longest_free_range_get(&hpdata), "");
+
+	/*
+	 * Build up a bigger free-range, 2 pages at a time, until we've got 6
+	 * adjacent free pages total.  Pages 8-13 should be unreserved after
+	 * this.
+	 */
+	hpdata_unreserve(&hpdata, (char *)HPDATA_ADDR + 10 * PAGE, 2 * PAGE);
+	expect_true(hpdata_consistent(&hpdata), "");
+	expect_zu_eq(2, hpdata_longest_free_range_get(&hpdata), "");
+
+	hpdata_unreserve(&hpdata, (char *)HPDATA_ADDR + 12 * PAGE, 2 * PAGE);
+	expect_true(hpdata_consistent(&hpdata), "");
+	expect_zu_eq(4, hpdata_longest_free_range_get(&hpdata), "");
+
+	hpdata_unreserve(&hpdata, (char *)HPDATA_ADDR + 8 * PAGE, 2 * PAGE);
+	expect_true(hpdata_consistent(&hpdata), "");
+	expect_zu_eq(6, hpdata_longest_free_range_get(&hpdata), "");
+
+	/*
+	 * Leave page 14 reserved, but free page 15 (this test the case where
+	 * unreserving combines two ranges).
+	 */
+	hpdata_unreserve(&hpdata, (char *)HPDATA_ADDR + 15 * PAGE, PAGE);
+	/*
+	 * Longest free range shouldn't change; we've got a free range of size
+	 * 6, then a reserved page, then another free range.
+	 */
+	expect_true(hpdata_consistent(&hpdata), "");
+	expect_zu_eq(6, hpdata_longest_free_range_get(&hpdata), "");
+
+	/* After freeing page 14, the two ranges get combined. */
+	hpdata_unreserve(&hpdata, (char *)HPDATA_ADDR + 14 * PAGE, PAGE);
+	expect_true(hpdata_consistent(&hpdata), "");
+	expect_zu_eq(8, hpdata_longest_free_range_get(&hpdata), "");
+}
+TEST_END
+
+TEST_BEGIN(test_purge_simple) {
+	hpdata_t hpdata;
+	hpdata_init(&hpdata, HPDATA_ADDR, HPDATA_AGE);
+
+	void *alloc = hpdata_reserve_alloc(&hpdata, HUGEPAGE_PAGES / 2 * PAGE);
+	expect_ptr_eq(alloc, HPDATA_ADDR, "");
+
+	/* Create HUGEPAGE_PAGES / 4 dirty inactive pages at the beginning. */
+	hpdata_unreserve(&hpdata, alloc, HUGEPAGE_PAGES / 4 * PAGE);
+
+	expect_zu_eq(hpdata_ntouched_get(&hpdata), HUGEPAGE_PAGES / 2, "");
+
+	hpdata_alloc_allowed_set(&hpdata, false);
+	hpdata_purge_state_t purge_state;
+	size_t to_purge = hpdata_purge_begin(&hpdata, &purge_state);
+	expect_zu_eq(HUGEPAGE_PAGES / 4, to_purge, "");
+
+	void *purge_addr;
+	size_t purge_size;
+	bool got_result = hpdata_purge_next(&hpdata, &purge_state, &purge_addr,
+	    &purge_size);
+	expect_true(got_result, "");
+	expect_ptr_eq(HPDATA_ADDR, purge_addr, "");
+	expect_zu_eq(HUGEPAGE_PAGES / 4 * PAGE, purge_size, "");
+
+	got_result = hpdata_purge_next(&hpdata, &purge_state, &purge_addr,
+	    &purge_size);
+	expect_false(got_result, "Unexpected additional purge range: "
+	    "extent at %p of size %zu", purge_addr, purge_size);
+
+	hpdata_purge_end(&hpdata, &purge_state);
+	expect_zu_eq(hpdata_ntouched_get(&hpdata), HUGEPAGE_PAGES / 4, "");
+}
+TEST_END
+
+/*
+ * We only test intervening dalloc's not intervening allocs; the latter are
+ * disallowed as a purging precondition (because they interfere with purging
+ * across a retained extent, saving a purge call).
+ */
+TEST_BEGIN(test_purge_intervening_dalloc) {
+	hpdata_t hpdata;
+	hpdata_init(&hpdata, HPDATA_ADDR, HPDATA_AGE);
+
+	/* Allocate the first 3/4 of the pages. */
+	void *alloc = hpdata_reserve_alloc(&hpdata, 3 * HUGEPAGE_PAGES / 4  * PAGE);
+	expect_ptr_eq(alloc, HPDATA_ADDR, "");
+
+	/* Free the first 1/4 and the third 1/4 of the pages. */
+	hpdata_unreserve(&hpdata, alloc, HUGEPAGE_PAGES / 4 * PAGE);
+	hpdata_unreserve(&hpdata,
+	    (void *)((uintptr_t)alloc + 2 * HUGEPAGE_PAGES / 4 * PAGE),
+	    HUGEPAGE_PAGES / 4 * PAGE);
+
+	expect_zu_eq(hpdata_ntouched_get(&hpdata), 3 * HUGEPAGE_PAGES / 4, "");
+
+	hpdata_alloc_allowed_set(&hpdata, false);
+	hpdata_purge_state_t purge_state;
+	size_t to_purge = hpdata_purge_begin(&hpdata, &purge_state);
+	expect_zu_eq(HUGEPAGE_PAGES / 2, to_purge, "");
+
+	void *purge_addr;
+	size_t purge_size;
+	/* First purge. */
+	bool got_result = hpdata_purge_next(&hpdata, &purge_state, &purge_addr,
+	    &purge_size);
+	expect_true(got_result, "");
+	expect_ptr_eq(HPDATA_ADDR, purge_addr, "");
+	expect_zu_eq(HUGEPAGE_PAGES / 4 * PAGE, purge_size, "");
+
+	/* Deallocate the second 1/4 before the second purge occurs. */
+	hpdata_unreserve(&hpdata,
+	    (void *)((uintptr_t)alloc + 1 * HUGEPAGE_PAGES / 4 * PAGE),
+	    HUGEPAGE_PAGES / 4 * PAGE);
+
+	/* Now continue purging. */
+	got_result = hpdata_purge_next(&hpdata, &purge_state, &purge_addr,
+	    &purge_size);
+	expect_true(got_result, "");
+	expect_ptr_eq(
+	    (void *)((uintptr_t)alloc + 2 * HUGEPAGE_PAGES / 4 * PAGE),
+	    purge_addr, "");
+	expect_zu_ge(HUGEPAGE_PAGES / 4 * PAGE, purge_size, "");
+
+	got_result = hpdata_purge_next(&hpdata, &purge_state, &purge_addr,
+	    &purge_size);
+	expect_false(got_result, "Unexpected additional purge range: "
+	    "extent at %p of size %zu", purge_addr, purge_size);
+
+	hpdata_purge_end(&hpdata, &purge_state);
+
+	expect_zu_eq(hpdata_ntouched_get(&hpdata), HUGEPAGE_PAGES / 4, "");
+}
+TEST_END
+
+TEST_BEGIN(test_purge_over_retained) {
+	void *purge_addr;
+	size_t purge_size;
+
+	hpdata_t hpdata;
+	hpdata_init(&hpdata, HPDATA_ADDR, HPDATA_AGE);
+
+	/* Allocate the first 3/4 of the pages. */
+	void *alloc = hpdata_reserve_alloc(&hpdata, 3 * HUGEPAGE_PAGES / 4  * PAGE);
+	expect_ptr_eq(alloc, HPDATA_ADDR, "");
+
+	/* Free the second quarter. */
+	void *second_quarter =
+	    (void *)((uintptr_t)alloc + HUGEPAGE_PAGES / 4 * PAGE);
+	hpdata_unreserve(&hpdata, second_quarter, HUGEPAGE_PAGES / 4 * PAGE);
+
+	expect_zu_eq(hpdata_ntouched_get(&hpdata), 3 * HUGEPAGE_PAGES / 4, "");
+
+	/* Purge the second quarter. */
+	hpdata_alloc_allowed_set(&hpdata, false);
+	hpdata_purge_state_t purge_state;
+	size_t to_purge_dirty = hpdata_purge_begin(&hpdata, &purge_state);
+	expect_zu_eq(HUGEPAGE_PAGES / 4, to_purge_dirty, "");
+
+	bool got_result = hpdata_purge_next(&hpdata, &purge_state, &purge_addr,
+	    &purge_size);
+	expect_true(got_result, "");
+	expect_ptr_eq(second_quarter, purge_addr, "");
+	expect_zu_eq(HUGEPAGE_PAGES / 4 * PAGE, purge_size, "");
+
+	got_result = hpdata_purge_next(&hpdata, &purge_state, &purge_addr,
+	    &purge_size);
+	expect_false(got_result, "Unexpected additional purge range: "
+	    "extent at %p of size %zu", purge_addr, purge_size);
+	hpdata_purge_end(&hpdata, &purge_state);
+
+	expect_zu_eq(hpdata_ntouched_get(&hpdata), HUGEPAGE_PAGES / 2, "");
+
+	/* Free the first and third quarter. */
+	hpdata_unreserve(&hpdata, HPDATA_ADDR, HUGEPAGE_PAGES / 4 * PAGE);
+	hpdata_unreserve(&hpdata,
+	    (void *)((uintptr_t)alloc + 2 * HUGEPAGE_PAGES / 4 * PAGE),
+	    HUGEPAGE_PAGES / 4 * PAGE);
+
+	/*
+	 * Purge again.  The second quarter is retained, so we can safely
+	 * re-purge it.  We expect a single purge of 3/4 of the hugepage,
+	 * purging half its pages.
+	 */
+	to_purge_dirty = hpdata_purge_begin(&hpdata, &purge_state);
+	expect_zu_eq(HUGEPAGE_PAGES / 2, to_purge_dirty, "");
+
+	got_result = hpdata_purge_next(&hpdata, &purge_state, &purge_addr,
+	    &purge_size);
+	expect_true(got_result, "");
+	expect_ptr_eq(HPDATA_ADDR, purge_addr, "");
+	expect_zu_eq(3 * HUGEPAGE_PAGES / 4 * PAGE, purge_size, "");
+
+	got_result = hpdata_purge_next(&hpdata, &purge_state, &purge_addr,
+	    &purge_size);
+	expect_false(got_result, "Unexpected additional purge range: "
+	    "extent at %p of size %zu", purge_addr, purge_size);
+	hpdata_purge_end(&hpdata, &purge_state);
+
+	expect_zu_eq(hpdata_ntouched_get(&hpdata), 0, "");
+}
+TEST_END
+
+TEST_BEGIN(test_hugify) {
+	hpdata_t hpdata;
+	hpdata_init(&hpdata, HPDATA_ADDR, HPDATA_AGE);
+
+	void *alloc = hpdata_reserve_alloc(&hpdata, HUGEPAGE / 2);
+	expect_ptr_eq(alloc, HPDATA_ADDR, "");
+
+	expect_zu_eq(HUGEPAGE_PAGES / 2, hpdata_ntouched_get(&hpdata), "");
+
+	hpdata_hugify(&hpdata);
+
+	/* Hugeifying should have increased the dirty page count. */
+	expect_zu_eq(HUGEPAGE_PAGES, hpdata_ntouched_get(&hpdata), "");
+}
+TEST_END
+
+int main(void) {
+	return test_no_reentrancy(
+	    test_reserve_alloc,
+	    test_purge_simple,
+	    test_purge_intervening_dalloc,
+	    test_purge_over_retained,
+	    test_hugify);
+}
diff --git a/deps/jemalloc/test/unit/huge.c b/deps/jemalloc/test/unit/huge.c
new file mode 100644
index 0000000..ec64e50
--- /dev/null
+++ b/deps/jemalloc/test/unit/huge.c
@@ -0,0 +1,108 @@
+#include "test/jemalloc_test.h"
+
+/* Threshold: 2 << 20 = 2097152. */
+const char *malloc_conf = "oversize_threshold:2097152";
+
+#define HUGE_SZ (2 << 20)
+#define SMALL_SZ (8)
+
+TEST_BEGIN(huge_bind_thread) {
+	unsigned arena1, arena2;
+	size_t sz = sizeof(unsigned);
+
+	/* Bind to a manual arena. */
+	expect_d_eq(mallctl("arenas.create", &arena1, &sz, NULL, 0), 0,
+	    "Failed to create arena");
+	expect_d_eq(mallctl("thread.arena", NULL, NULL, &arena1,
+	    sizeof(arena1)), 0, "Fail to bind thread");
+
+	void *ptr = mallocx(HUGE_SZ, 0);
+	expect_ptr_not_null(ptr, "Fail to allocate huge size");
+	expect_d_eq(mallctl("arenas.lookup", &arena2, &sz, &ptr,
+	    sizeof(ptr)), 0, "Unexpected mallctl() failure");
+	expect_u_eq(arena1, arena2, "Wrong arena used after binding");
+	dallocx(ptr, 0);
+
+	/* Switch back to arena 0. */
+	test_skip_if(have_percpu_arena &&
+	    PERCPU_ARENA_ENABLED(opt_percpu_arena));
+	arena2 = 0;
+	expect_d_eq(mallctl("thread.arena", NULL, NULL, &arena2,
+	    sizeof(arena2)), 0, "Fail to bind thread");
+	ptr = mallocx(SMALL_SZ, MALLOCX_TCACHE_NONE);
+	expect_d_eq(mallctl("arenas.lookup", &arena2, &sz, &ptr,
+	    sizeof(ptr)), 0, "Unexpected mallctl() failure");
+	expect_u_eq(arena2, 0, "Wrong arena used after binding");
+	dallocx(ptr, MALLOCX_TCACHE_NONE);
+
+	/* Then huge allocation should use the huge arena. */
+	ptr = mallocx(HUGE_SZ, 0);
+	expect_ptr_not_null(ptr, "Fail to allocate huge size");
+	expect_d_eq(mallctl("arenas.lookup", &arena2, &sz, &ptr,
+	    sizeof(ptr)), 0, "Unexpected mallctl() failure");
+	expect_u_ne(arena2, 0, "Wrong arena used after binding");
+	expect_u_ne(arena1, arena2, "Wrong arena used after binding");
+	dallocx(ptr, 0);
+}
+TEST_END
+
+TEST_BEGIN(huge_mallocx) {
+	unsigned arena1, arena2;
+	size_t sz = sizeof(unsigned);
+
+	expect_d_eq(mallctl("arenas.create", &arena1, &sz, NULL, 0), 0,
+	    "Failed to create arena");
+	void *huge = mallocx(HUGE_SZ, MALLOCX_ARENA(arena1));
+	expect_ptr_not_null(huge, "Fail to allocate huge size");
+	expect_d_eq(mallctl("arenas.lookup", &arena2, &sz, &huge,
+	    sizeof(huge)), 0, "Unexpected mallctl() failure");
+	expect_u_eq(arena1, arena2, "Wrong arena used for mallocx");
+	dallocx(huge, MALLOCX_ARENA(arena1));
+
+	void *huge2 = mallocx(HUGE_SZ, 0);
+	expect_ptr_not_null(huge, "Fail to allocate huge size");
+	expect_d_eq(mallctl("arenas.lookup", &arena2, &sz, &huge2,
+	    sizeof(huge2)), 0, "Unexpected mallctl() failure");
+	expect_u_ne(arena1, arena2,
+	    "Huge allocation should not come from the manual arena.");
+	expect_u_ne(arena2, 0,
+	    "Huge allocation should not come from the arena 0.");
+	dallocx(huge2, 0);
+}
+TEST_END
+
+TEST_BEGIN(huge_allocation) {
+	unsigned arena1, arena2;
+
+	void *ptr = mallocx(HUGE_SZ, 0);
+	expect_ptr_not_null(ptr, "Fail to allocate huge size");
+	size_t sz = sizeof(unsigned);
+	expect_d_eq(mallctl("arenas.lookup", &arena1, &sz, &ptr, sizeof(ptr)),
+	    0, "Unexpected mallctl() failure");
+	expect_u_gt(arena1, 0, "Huge allocation should not come from arena 0");
+	dallocx(ptr, 0);
+
+	ptr = mallocx(HUGE_SZ >> 1, 0);
+	expect_ptr_not_null(ptr, "Fail to allocate half huge size");
+	expect_d_eq(mallctl("arenas.lookup", &arena2, &sz, &ptr,
+	    sizeof(ptr)), 0, "Unexpected mallctl() failure");
+	expect_u_ne(arena1, arena2, "Wrong arena used for half huge");
+	dallocx(ptr, 0);
+
+	ptr = mallocx(SMALL_SZ, MALLOCX_TCACHE_NONE);
+	expect_ptr_not_null(ptr, "Fail to allocate small size");
+	expect_d_eq(mallctl("arenas.lookup", &arena2, &sz, &ptr,
+	    sizeof(ptr)), 0, "Unexpected mallctl() failure");
+	expect_u_ne(arena1, arena2,
+	    "Huge and small should be from different arenas");
+	dallocx(ptr, 0);
+}
+TEST_END
+
+int
+main(void) {
+	return test(
+	    huge_allocation,
+	    huge_mallocx,
+	    huge_bind_thread);
+}
diff --git a/deps/jemalloc/test/unit/inspect.c b/deps/jemalloc/test/unit/inspect.c
new file mode 100644
index 0000000..fe59e59
--- /dev/null
+++ b/deps/jemalloc/test/unit/inspect.c
@@ -0,0 +1,278 @@
+#include "test/jemalloc_test.h"
+
+#define TEST_UTIL_EINVAL(node, a, b, c, d, why_inval) do {		\
+	assert_d_eq(mallctl("experimental.utilization." node,		\
+	    a, b, c, d), EINVAL, "Should fail when " why_inval);	\
+	assert_zu_eq(out_sz, out_sz_ref,				\
+	    "Output size touched when given invalid arguments");	\
+	assert_d_eq(memcmp(out, out_ref, out_sz_ref), 0,		\
+	    "Output content touched when given invalid arguments");	\
+} while (0)
+
+#define TEST_UTIL_QUERY_EINVAL(a, b, c, d, why_inval)			\
+	TEST_UTIL_EINVAL("query", a, b, c, d, why_inval)
+#define TEST_UTIL_BATCH_EINVAL(a, b, c, d, why_inval)			\
+	TEST_UTIL_EINVAL("batch_query", a, b, c, d, why_inval)
+
+#define TEST_UTIL_VALID(node) do {					\
+        assert_d_eq(mallctl("experimental.utilization." node,		\
+	    out, &out_sz, in, in_sz), 0,				\
+	    "Should return 0 on correct arguments");			\
+        expect_zu_eq(out_sz, out_sz_ref, "incorrect output size");	\
+	expect_d_ne(memcmp(out, out_ref, out_sz_ref), 0,		\
+	    "Output content should be changed");			\
+} while (0)
+
+#define TEST_UTIL_BATCH_VALID TEST_UTIL_VALID("batch_query")
+
+#define TEST_MAX_SIZE (1 << 20)
+
+TEST_BEGIN(test_query) {
+	size_t sz;
+	/*
+	 * Select some sizes that can span both small and large sizes, and are
+	 * numerically unrelated to any size boundaries.
+	 */
+	for (sz = 7; sz <= TEST_MAX_SIZE && sz <= SC_LARGE_MAXCLASS;
+	    sz += (sz <= SC_SMALL_MAXCLASS ? 1009 : 99989)) {
+		void *p = mallocx(sz, 0);
+		void **in = &p;
+		size_t in_sz = sizeof(const void *);
+		size_t out_sz = sizeof(void *) + sizeof(size_t) * 5;
+		void *out = mallocx(out_sz, 0);
+		void *out_ref = mallocx(out_sz, 0);
+		size_t out_sz_ref = out_sz;
+
+		assert_ptr_not_null(p,
+		    "test pointer allocation failed");
+		assert_ptr_not_null(out,
+		    "test output allocation failed");
+		assert_ptr_not_null(out_ref,
+		    "test reference output allocation failed");
+
+#define SLABCUR_READ(out) (*(void **)out)
+#define COUNTS(out) ((size_t *)((void **)out + 1))
+#define NFREE_READ(out) COUNTS(out)[0]
+#define NREGS_READ(out) COUNTS(out)[1]
+#define SIZE_READ(out) COUNTS(out)[2]
+#define BIN_NFREE_READ(out) COUNTS(out)[3]
+#define BIN_NREGS_READ(out) COUNTS(out)[4]
+
+		SLABCUR_READ(out) = NULL;
+		NFREE_READ(out) = NREGS_READ(out) = SIZE_READ(out) = -1;
+		BIN_NFREE_READ(out) = BIN_NREGS_READ(out) = -1;
+		memcpy(out_ref, out, out_sz);
+
+		/* Test invalid argument(s) errors */
+		TEST_UTIL_QUERY_EINVAL(NULL, &out_sz, in, in_sz,
+		    "old is NULL");
+		TEST_UTIL_QUERY_EINVAL(out, NULL, in, in_sz,
+		    "oldlenp is NULL");
+		TEST_UTIL_QUERY_EINVAL(out, &out_sz, NULL, in_sz,
+		    "newp is NULL");
+		TEST_UTIL_QUERY_EINVAL(out, &out_sz, in, 0,
+		    "newlen is zero");
+		in_sz -= 1;
+		TEST_UTIL_QUERY_EINVAL(out, &out_sz, in, in_sz,
+		    "invalid newlen");
+		in_sz += 1;
+		out_sz_ref = out_sz -= 2 * sizeof(size_t);
+		TEST_UTIL_QUERY_EINVAL(out, &out_sz, in, in_sz,
+		    "invalid *oldlenp");
+		out_sz_ref = out_sz += 2 * sizeof(size_t);
+
+		/* Examine output for valid call */
+		TEST_UTIL_VALID("query");
+		expect_zu_le(sz, SIZE_READ(out),
+		    "Extent size should be at least allocation size");
+		expect_zu_eq(SIZE_READ(out) & (PAGE - 1), 0,
+		    "Extent size should be a multiple of page size");
+
+		/*
+		 * We don't do much bin checking if prof is on, since profiling
+		 * can produce extents that are for small size classes but not
+		 * slabs, which interferes with things like region counts.
+		 */
+		if (!opt_prof && sz <= SC_SMALL_MAXCLASS) {
+			expect_zu_le(NFREE_READ(out), NREGS_READ(out),
+			    "Extent free count exceeded region count");
+			expect_zu_le(NREGS_READ(out), SIZE_READ(out),
+			    "Extent region count exceeded size");
+			expect_zu_ne(NREGS_READ(out), 0,
+			    "Extent region count must be positive");
+			expect_true(NFREE_READ(out) == 0 || (SLABCUR_READ(out)
+			    != NULL && SLABCUR_READ(out) <= p),
+			    "Allocation should follow first fit principle");
+
+			if (config_stats) {
+				expect_zu_le(BIN_NFREE_READ(out),
+				    BIN_NREGS_READ(out),
+				    "Bin free count exceeded region count");
+				expect_zu_ne(BIN_NREGS_READ(out), 0,
+				    "Bin region count must be positive");
+				expect_zu_le(NFREE_READ(out),
+				    BIN_NFREE_READ(out),
+				    "Extent free count exceeded bin free count");
+				expect_zu_le(NREGS_READ(out),
+				    BIN_NREGS_READ(out),
+				    "Extent region count exceeded "
+				    "bin region count");
+				expect_zu_eq(BIN_NREGS_READ(out)
+				    % NREGS_READ(out), 0,
+				    "Bin region count isn't a multiple of "
+				    "extent region count");
+				expect_zu_le(
+				    BIN_NFREE_READ(out) - NFREE_READ(out),
+				    BIN_NREGS_READ(out) - NREGS_READ(out),
+				    "Free count in other extents in the bin "
+				    "exceeded region count in other extents "
+				    "in the bin");
+				expect_zu_le(NREGS_READ(out) - NFREE_READ(out),
+				    BIN_NREGS_READ(out) - BIN_NFREE_READ(out),
+				    "Extent utilized count exceeded "
+				    "bin utilized count");
+			}
+		} else if (sz > SC_SMALL_MAXCLASS) {
+			expect_zu_eq(NFREE_READ(out), 0,
+			    "Extent free count should be zero");
+			expect_zu_eq(NREGS_READ(out), 1,
+			    "Extent region count should be one");
+			expect_ptr_null(SLABCUR_READ(out),
+			    "Current slab must be null for large size classes");
+			if (config_stats) {
+				expect_zu_eq(BIN_NFREE_READ(out), 0,
+				    "Bin free count must be zero for "
+				    "large sizes");
+				expect_zu_eq(BIN_NREGS_READ(out), 0,
+				    "Bin region count must be zero for "
+				    "large sizes");
+			}
+		}
+
+#undef BIN_NREGS_READ
+#undef BIN_NFREE_READ
+#undef SIZE_READ
+#undef NREGS_READ
+#undef NFREE_READ
+#undef COUNTS
+#undef SLABCUR_READ
+
+		free(out_ref);
+		free(out);
+		free(p);
+	}
+}
+TEST_END
+
+TEST_BEGIN(test_batch) {
+	size_t sz;
+	/*
+	 * Select some sizes that can span both small and large sizes, and are
+	 * numerically unrelated to any size boundaries.
+	 */
+	for (sz = 17; sz <= TEST_MAX_SIZE && sz <= SC_LARGE_MAXCLASS;
+	    sz += (sz <= SC_SMALL_MAXCLASS ? 1019 : 99991)) {
+		void *p = mallocx(sz, 0);
+		void *q = mallocx(sz, 0);
+		void *in[] = {p, q};
+		size_t in_sz = sizeof(const void *) * 2;
+		size_t out[] = {-1, -1, -1, -1, -1, -1};
+		size_t out_sz = sizeof(size_t) * 6;
+		size_t out_ref[] = {-1, -1, -1, -1, -1, -1};
+		size_t out_sz_ref = out_sz;
+
+		assert_ptr_not_null(p, "test pointer allocation failed");
+		assert_ptr_not_null(q, "test pointer allocation failed");
+
+		/* Test invalid argument(s) errors */
+		TEST_UTIL_BATCH_EINVAL(NULL, &out_sz, in, in_sz,
+		    "old is NULL");
+		TEST_UTIL_BATCH_EINVAL(out, NULL, in, in_sz,
+		    "oldlenp is NULL");
+		TEST_UTIL_BATCH_EINVAL(out, &out_sz, NULL, in_sz,
+		    "newp is NULL");
+		TEST_UTIL_BATCH_EINVAL(out, &out_sz, in, 0,
+		    "newlen is zero");
+		in_sz -= 1;
+		TEST_UTIL_BATCH_EINVAL(out, &out_sz, in, in_sz,
+		    "newlen is not an exact multiple");
+		in_sz += 1;
+		out_sz_ref = out_sz -= 2 * sizeof(size_t);
+		TEST_UTIL_BATCH_EINVAL(out, &out_sz, in, in_sz,
+		    "*oldlenp is not an exact multiple");
+		out_sz_ref = out_sz += 2 * sizeof(size_t);
+		in_sz -= sizeof(const void *);
+		TEST_UTIL_BATCH_EINVAL(out, &out_sz, in, in_sz,
+		    "*oldlenp and newlen do not match");
+		in_sz += sizeof(const void *);
+
+	/* Examine output for valid calls */
+#define TEST_EQUAL_REF(i, message) \
+	assert_d_eq(memcmp(out + (i) * 3, out_ref + (i) * 3, 3), 0, message)
+
+#define NFREE_READ(out, i) out[(i) * 3]
+#define NREGS_READ(out, i) out[(i) * 3 + 1]
+#define SIZE_READ(out, i) out[(i) * 3 + 2]
+
+		out_sz_ref = out_sz /= 2;
+		in_sz /= 2;
+		TEST_UTIL_BATCH_VALID;
+		expect_zu_le(sz, SIZE_READ(out, 0),
+		    "Extent size should be at least allocation size");
+		expect_zu_eq(SIZE_READ(out, 0) & (PAGE - 1), 0,
+		    "Extent size should be a multiple of page size");
+		/*
+		 * See the corresponding comment in test_query; profiling breaks
+		 * our slab count expectations.
+		 */
+		if (sz <= SC_SMALL_MAXCLASS && !opt_prof) {
+			expect_zu_le(NFREE_READ(out, 0), NREGS_READ(out, 0),
+			    "Extent free count exceeded region count");
+			expect_zu_le(NREGS_READ(out, 0), SIZE_READ(out, 0),
+			    "Extent region count exceeded size");
+			expect_zu_ne(NREGS_READ(out, 0), 0,
+			    "Extent region count must be positive");
+		} else if (sz > SC_SMALL_MAXCLASS) {
+			expect_zu_eq(NFREE_READ(out, 0), 0,
+			    "Extent free count should be zero");
+			expect_zu_eq(NREGS_READ(out, 0), 1,
+			    "Extent region count should be one");
+		}
+		TEST_EQUAL_REF(1,
+		    "Should not overwrite content beyond what's needed");
+		in_sz *= 2;
+		out_sz_ref = out_sz *= 2;
+
+		memcpy(out_ref, out, 3 * sizeof(size_t));
+		TEST_UTIL_BATCH_VALID;
+		TEST_EQUAL_REF(0, "Statistics should be stable across calls");
+		if (sz <= SC_SMALL_MAXCLASS) {
+			expect_zu_le(NFREE_READ(out, 1), NREGS_READ(out, 1),
+			    "Extent free count exceeded region count");
+		} else {
+			expect_zu_eq(NFREE_READ(out, 0), 0,
+			    "Extent free count should be zero");
+		}
+		expect_zu_eq(NREGS_READ(out, 0), NREGS_READ(out, 1),
+		    "Extent region count should be same for same region size");
+		expect_zu_eq(SIZE_READ(out, 0), SIZE_READ(out, 1),
+		    "Extent size should be same for same region size");
+
+#undef SIZE_READ
+#undef NREGS_READ
+#undef NFREE_READ
+
+#undef TEST_EQUAL_REF
+
+		free(q);
+		free(p);
+	}
+}
+TEST_END
+
+int
+main(void) {
+	assert_zu_lt(SC_SMALL_MAXCLASS + 100000, TEST_MAX_SIZE,
+	    "Test case cannot cover large classes");
+	return test(test_query, test_batch);
+}
diff --git a/deps/jemalloc/test/unit/inspect.sh b/deps/jemalloc/test/unit/inspect.sh
new file mode 100644
index 0000000..352d110
--- /dev/null
+++ b/deps/jemalloc/test/unit/inspect.sh
@@ -0,0 +1,5 @@
+#!/bin/sh
+
+if [ "x${enable_prof}" = "x1" ] ; then
+  export MALLOC_CONF="prof:false"
+fi
diff --git a/deps/jemalloc/test/unit/junk.c b/deps/jemalloc/test/unit/junk.c
new file mode 100644
index 0000000..543092f
--- /dev/null
+++ b/deps/jemalloc/test/unit/junk.c
@@ -0,0 +1,195 @@
+#include "test/jemalloc_test.h"
+
+#define arraylen(arr) (sizeof(arr)/sizeof(arr[0]))
+static size_t ptr_ind;
+static void *volatile ptrs[100];
+static void *last_junked_ptr;
+static size_t last_junked_usize;
+
+static void
+reset() {
+	ptr_ind = 0;
+	last_junked_ptr = NULL;
+	last_junked_usize = 0;
+}
+
+static void
+test_junk(void *ptr, size_t usize) {
+	last_junked_ptr = ptr;
+	last_junked_usize = usize;
+}
+
+static void
+do_allocs(size_t size, bool zero, size_t lg_align) {
+#define JUNK_ALLOC(...)							\
+	do {								\
+		assert(ptr_ind + 1 < arraylen(ptrs));			\
+		void *ptr = __VA_ARGS__;				\
+		assert_ptr_not_null(ptr, "");				\
+		ptrs[ptr_ind++] = ptr;					\
+		if (opt_junk_alloc && !zero) {				\
+			expect_ptr_eq(ptr, last_junked_ptr, "");	\
+			expect_zu_eq(last_junked_usize,			\
+			    TEST_MALLOC_SIZE(ptr), "");			\
+		}							\
+	} while (0)
+	if (!zero && lg_align == 0) {
+		JUNK_ALLOC(malloc(size));
+	}
+	if (!zero) {
+		JUNK_ALLOC(aligned_alloc(1 << lg_align, size));
+	}
+#ifdef JEMALLOC_OVERRIDE_MEMALIGN
+	if (!zero) {
+		JUNK_ALLOC(je_memalign(1 << lg_align, size));
+	}
+#endif
+#ifdef JEMALLOC_OVERRIDE_VALLOC
+	if (!zero && lg_align == LG_PAGE) {
+		JUNK_ALLOC(je_valloc(size));
+	}
+#endif
+	int zero_flag = zero ? MALLOCX_ZERO : 0;
+	JUNK_ALLOC(mallocx(size, zero_flag | MALLOCX_LG_ALIGN(lg_align)));
+	JUNK_ALLOC(mallocx(size, zero_flag | MALLOCX_LG_ALIGN(lg_align)
+	    | MALLOCX_TCACHE_NONE));
+	if (lg_align >= LG_SIZEOF_PTR) {
+		void *memalign_result;
+		int err = posix_memalign(&memalign_result, (1 << lg_align),
+		    size);
+		assert_d_eq(err, 0, "");
+		JUNK_ALLOC(memalign_result);
+	}
+}
+
+TEST_BEGIN(test_junk_alloc_free) {
+	bool zerovals[] = {false, true};
+	size_t sizevals[] = {
+		1, 8, 100, 1000, 100*1000
+	/*
+	 * Memory allocation failure is a real possibility in 32-bit mode.
+	 * Rather than try to check in the face of resource exhaustion, we just
+	 * rely more on the 64-bit tests.  This is a little bit white-box-y in
+	 * the sense that this is only a good test strategy if we know that the
+	 * junk pathways don't touch interact with the allocation selection
+	 * mechanisms; but this is in fact the case.
+	 */
+#if LG_SIZEOF_PTR == 3
+		    , 10 * 1000 * 1000
+#endif
+	};
+	size_t lg_alignvals[] = {
+		0, 4, 10, 15, 16, LG_PAGE
+#if LG_SIZEOF_PTR == 3
+		    , 20, 24
+#endif
+	};
+
+#define JUNK_FREE(...)							\
+	do {								\
+		do_allocs(size, zero, lg_align);			\
+		for (size_t n = 0; n < ptr_ind; n++) {			\
+			void *ptr = ptrs[n];				\
+			__VA_ARGS__;					\
+			if (opt_junk_free) {				\
+				assert_ptr_eq(ptr, last_junked_ptr,	\
+				    "");				\
+				assert_zu_eq(usize, last_junked_usize,	\
+				    "");				\
+			}						\
+			reset();					\
+		}							\
+	} while (0)
+	for (size_t i = 0; i < arraylen(zerovals); i++) {
+		for (size_t j = 0; j < arraylen(sizevals); j++) {
+			for (size_t k = 0; k < arraylen(lg_alignvals); k++) {
+				bool zero = zerovals[i];
+				size_t size = sizevals[j];
+				size_t lg_align = lg_alignvals[k];
+				size_t usize = nallocx(size,
+				    MALLOCX_LG_ALIGN(lg_align));
+
+				JUNK_FREE(free(ptr));
+				JUNK_FREE(dallocx(ptr, 0));
+				JUNK_FREE(dallocx(ptr, MALLOCX_TCACHE_NONE));
+				JUNK_FREE(dallocx(ptr, MALLOCX_LG_ALIGN(
+				    lg_align)));
+				JUNK_FREE(sdallocx(ptr, usize, MALLOCX_LG_ALIGN(
+				    lg_align)));
+				JUNK_FREE(sdallocx(ptr, usize,
+				    MALLOCX_TCACHE_NONE | MALLOCX_LG_ALIGN(lg_align)));
+				if (opt_zero_realloc_action
+				    == zero_realloc_action_free) {
+					JUNK_FREE(realloc(ptr, 0));
+				}
+			}
+		}
+	}
+}
+TEST_END
+
+TEST_BEGIN(test_realloc_expand) {
+	char *volatile ptr;
+	char *volatile expanded;
+
+	test_skip_if(!opt_junk_alloc);
+
+	/* Realloc */
+	ptr = malloc(SC_SMALL_MAXCLASS);
+	expanded = realloc(ptr, SC_LARGE_MINCLASS);
+	expect_ptr_eq(last_junked_ptr, &expanded[SC_SMALL_MAXCLASS], "");
+	expect_zu_eq(last_junked_usize,
+	    SC_LARGE_MINCLASS - SC_SMALL_MAXCLASS, "");
+	free(expanded);
+
+	/* rallocx(..., 0) */
+	ptr = malloc(SC_SMALL_MAXCLASS);
+	expanded = rallocx(ptr, SC_LARGE_MINCLASS, 0);
+	expect_ptr_eq(last_junked_ptr, &expanded[SC_SMALL_MAXCLASS], "");
+	expect_zu_eq(last_junked_usize,
+	    SC_LARGE_MINCLASS - SC_SMALL_MAXCLASS, "");
+	free(expanded);
+
+	/* rallocx(..., nonzero) */
+	ptr = malloc(SC_SMALL_MAXCLASS);
+	expanded = rallocx(ptr, SC_LARGE_MINCLASS, MALLOCX_TCACHE_NONE);
+	expect_ptr_eq(last_junked_ptr, &expanded[SC_SMALL_MAXCLASS], "");
+	expect_zu_eq(last_junked_usize,
+	    SC_LARGE_MINCLASS - SC_SMALL_MAXCLASS, "");
+	free(expanded);
+
+	/* rallocx(..., MALLOCX_ZERO) */
+	ptr = malloc(SC_SMALL_MAXCLASS);
+	last_junked_ptr = (void *)-1;
+	last_junked_usize = (size_t)-1;
+	expanded = rallocx(ptr, SC_LARGE_MINCLASS, MALLOCX_ZERO);
+	expect_ptr_eq(last_junked_ptr, (void *)-1, "");
+	expect_zu_eq(last_junked_usize, (size_t)-1, "");
+	free(expanded);
+
+	/*
+	 * Unfortunately, testing xallocx reliably is difficult to do portably
+	 * (since allocations can be expanded / not expanded differently on
+	 * different platforms.  We rely on manual inspection there -- the
+	 * xallocx pathway is easy to inspect, though.
+	 *
+	 * Likewise, we don't test the shrinking pathways.  It's difficult to do
+	 * so consistently (because of the risk of split failure or memory
+	 * exhaustion, in which case no junking should happen).  This is fine
+	 * -- junking is a best-effort debug mechanism in the first place.
+	 */
+}
+TEST_END
+
+int
+main(void) {
+	junk_alloc_callback = &test_junk;
+	junk_free_callback = &test_junk;
+	/*
+	 * We check the last pointer junked.  If a reentrant call happens, that
+	 * might be an internal allocation.
+	 */
+	return test_no_reentrancy(
+	    test_junk_alloc_free,
+	    test_realloc_expand);
+}
diff --git a/deps/jemalloc/test/unit/junk.sh b/deps/jemalloc/test/unit/junk.sh
new file mode 100644
index 0000000..97cd8ca
--- /dev/null
+++ b/deps/jemalloc/test/unit/junk.sh
@@ -0,0 +1,5 @@
+#!/bin/sh
+
+if [ "x${enable_fill}" = "x1" ] ; then
+  export MALLOC_CONF="abort:false,zero:false,junk:true"
+fi
diff --git a/deps/jemalloc/test/unit/junk_alloc.c b/deps/jemalloc/test/unit/junk_alloc.c
new file mode 100644
index 0000000..a442a0c
--- /dev/null
+++ b/deps/jemalloc/test/unit/junk_alloc.c
@@ -0,0 +1 @@
+#include "junk.c"
diff --git a/deps/jemalloc/test/unit/junk_alloc.sh b/deps/jemalloc/test/unit/junk_alloc.sh
new file mode 100644
index 0000000..e1008c2
--- /dev/null
+++ b/deps/jemalloc/test/unit/junk_alloc.sh
@@ -0,0 +1,5 @@
+#!/bin/sh
+
+if [ "x${enable_fill}" = "x1" ] ; then
+  export MALLOC_CONF="abort:false,zero:false,junk:alloc"
+fi
diff --git a/deps/jemalloc/test/unit/junk_free.c b/deps/jemalloc/test/unit/junk_free.c
new file mode 100644
index 0000000..a442a0c
--- /dev/null
+++ b/deps/jemalloc/test/unit/junk_free.c
@@ -0,0 +1 @@
+#include "junk.c"
diff --git a/deps/jemalloc/test/unit/junk_free.sh b/deps/jemalloc/test/unit/junk_free.sh
new file mode 100644
index 0000000..402196c
--- /dev/null
+++ b/deps/jemalloc/test/unit/junk_free.sh
@@ -0,0 +1,5 @@
+#!/bin/sh
+
+if [ "x${enable_fill}" = "x1" ] ; then
+  export MALLOC_CONF="abort:false,zero:false,junk:free"
+fi
diff --git a/deps/jemalloc/test/unit/log.c b/deps/jemalloc/test/unit/log.c
new file mode 100644
index 0000000..c09b589
--- /dev/null
+++ b/deps/jemalloc/test/unit/log.c
@@ -0,0 +1,198 @@
+#include "test/jemalloc_test.h"
+
+#include "jemalloc/internal/log.h"
+
+static void
+update_log_var_names(const char *names) {
+	strncpy(log_var_names, names, sizeof(log_var_names));
+}
+
+static void
+expect_no_logging(const char *names) {
+	log_var_t log_l1 = LOG_VAR_INIT("l1");
+	log_var_t log_l2 = LOG_VAR_INIT("l2");
+	log_var_t log_l2_a = LOG_VAR_INIT("l2.a");
+
+	update_log_var_names(names);
+
+	int count = 0;
+
+	for (int i = 0; i < 10; i++) {
+		log_do_begin(log_l1)
+			count++;
+		log_do_end(log_l1)
+
+		log_do_begin(log_l2)
+			count++;
+		log_do_end(log_l2)
+
+		log_do_begin(log_l2_a)
+			count++;
+		log_do_end(log_l2_a)
+	}
+	expect_d_eq(count, 0, "Disabled logging not ignored!");
+}
+
+TEST_BEGIN(test_log_disabled) {
+	test_skip_if(!config_log);
+	atomic_store_b(&log_init_done, true, ATOMIC_RELAXED);
+	expect_no_logging("");
+	expect_no_logging("abc");
+	expect_no_logging("a.b.c");
+	expect_no_logging("l12");
+	expect_no_logging("l123|a456|b789");
+	expect_no_logging("|||");
+}
+TEST_END
+
+TEST_BEGIN(test_log_enabled_direct) {
+	test_skip_if(!config_log);
+	atomic_store_b(&log_init_done, true, ATOMIC_RELAXED);
+	log_var_t log_l1 = LOG_VAR_INIT("l1");
+	log_var_t log_l1_a = LOG_VAR_INIT("l1.a");
+	log_var_t log_l2 = LOG_VAR_INIT("l2");
+
+	int count;
+
+	count = 0;
+	update_log_var_names("l1");
+	for (int i = 0; i < 10; i++) {
+		log_do_begin(log_l1)
+			count++;
+		log_do_end(log_l1)
+	}
+	expect_d_eq(count, 10, "Mis-logged!");
+
+	count = 0;
+	update_log_var_names("l1.a");
+	for (int i = 0; i < 10; i++) {
+		log_do_begin(log_l1_a)
+			count++;
+		log_do_end(log_l1_a)
+	}
+	expect_d_eq(count, 10, "Mis-logged!");
+
+	count = 0;
+	update_log_var_names("l1.a|abc|l2|def");
+	for (int i = 0; i < 10; i++) {
+		log_do_begin(log_l1_a)
+			count++;
+		log_do_end(log_l1_a)
+
+		log_do_begin(log_l2)
+			count++;
+		log_do_end(log_l2)
+	}
+	expect_d_eq(count, 20, "Mis-logged!");
+}
+TEST_END
+
+TEST_BEGIN(test_log_enabled_indirect) {
+	test_skip_if(!config_log);
+	atomic_store_b(&log_init_done, true, ATOMIC_RELAXED);
+	update_log_var_names("l0|l1|abc|l2.b|def");
+
+	/* On. */
+	log_var_t log_l1 = LOG_VAR_INIT("l1");
+	/* Off. */
+	log_var_t log_l1a = LOG_VAR_INIT("l1a");
+	/* On. */
+	log_var_t log_l1_a = LOG_VAR_INIT("l1.a");
+	/* Off. */
+	log_var_t log_l2_a = LOG_VAR_INIT("l2.a");
+	/* On. */
+	log_var_t log_l2_b_a = LOG_VAR_INIT("l2.b.a");
+	/* On. */
+	log_var_t log_l2_b_b = LOG_VAR_INIT("l2.b.b");
+
+	/* 4 are on total, so should sum to 40. */
+	int count = 0;
+	for (int i = 0; i < 10; i++) {
+		log_do_begin(log_l1)
+			count++;
+		log_do_end(log_l1)
+
+		log_do_begin(log_l1a)
+			count++;
+		log_do_end(log_l1a)
+
+		log_do_begin(log_l1_a)
+			count++;
+		log_do_end(log_l1_a)
+
+		log_do_begin(log_l2_a)
+			count++;
+		log_do_end(log_l2_a)
+
+		log_do_begin(log_l2_b_a)
+			count++;
+		log_do_end(log_l2_b_a)
+
+		log_do_begin(log_l2_b_b)
+			count++;
+		log_do_end(log_l2_b_b)
+	}
+
+	expect_d_eq(count, 40, "Mis-logged!");
+}
+TEST_END
+
+TEST_BEGIN(test_log_enabled_global) {
+	test_skip_if(!config_log);
+	atomic_store_b(&log_init_done, true, ATOMIC_RELAXED);
+	update_log_var_names("abc|.|def");
+
+	log_var_t log_l1 = LOG_VAR_INIT("l1");
+	log_var_t log_l2_a_a = LOG_VAR_INIT("l2.a.a");
+
+	int count = 0;
+	for (int i = 0; i < 10; i++) {
+		log_do_begin(log_l1)
+		    count++;
+		log_do_end(log_l1)
+
+		log_do_begin(log_l2_a_a)
+		    count++;
+		log_do_end(log_l2_a_a)
+	}
+	expect_d_eq(count, 20, "Mis-logged!");
+}
+TEST_END
+
+TEST_BEGIN(test_logs_if_no_init) {
+	test_skip_if(!config_log);
+	atomic_store_b(&log_init_done, false, ATOMIC_RELAXED);
+
+	log_var_t l = LOG_VAR_INIT("definitely.not.enabled");
+
+	int count = 0;
+	for (int i = 0; i < 10; i++) {
+		log_do_begin(l)
+			count++;
+		log_do_end(l)
+	}
+	expect_d_eq(count, 0, "Logging shouldn't happen if not initialized.");
+}
+TEST_END
+
+/*
+ * This really just checks to make sure that this usage compiles; we don't have
+ * any test code to run.
+ */
+TEST_BEGIN(test_log_only_format_string) {
+	if (false) {
+		LOG("log_str", "No arguments follow this format string.");
+	}
+}
+TEST_END
+
+int
+main(void) {
+	return test(
+	    test_log_disabled,
+	    test_log_enabled_direct,
+	    test_log_enabled_indirect,
+	    test_log_enabled_global,
+	    test_logs_if_no_init,
+	    test_log_only_format_string);
+}
diff --git a/deps/jemalloc/test/unit/mallctl.c b/deps/jemalloc/test/unit/mallctl.c
new file mode 100644
index 0000000..6efc8f1
--- /dev/null
+++ b/deps/jemalloc/test/unit/mallctl.c
@@ -0,0 +1,1274 @@
+#include "test/jemalloc_test.h"
+
+#include "jemalloc/internal/ctl.h"
+#include "jemalloc/internal/hook.h"
+#include "jemalloc/internal/util.h"
+
+TEST_BEGIN(test_mallctl_errors) {
+	uint64_t epoch;
+	size_t sz;
+
+	expect_d_eq(mallctl("no_such_name", NULL, NULL, NULL, 0), ENOENT,
+	    "mallctl() should return ENOENT for non-existent names");
+
+	expect_d_eq(mallctl("version", NULL, NULL, "0.0.0", strlen("0.0.0")),
+	    EPERM, "mallctl() should return EPERM on attempt to write "
+	    "read-only value");
+
+	expect_d_eq(mallctl("epoch", NULL, NULL, (void *)&epoch,
+	    sizeof(epoch)-1), EINVAL,
+	    "mallctl() should return EINVAL for input size mismatch");
+	expect_d_eq(mallctl("epoch", NULL, NULL, (void *)&epoch,
+	    sizeof(epoch)+1), EINVAL,
+	    "mallctl() should return EINVAL for input size mismatch");
+
+	sz = sizeof(epoch)-1;
+	expect_d_eq(mallctl("epoch", (void *)&epoch, &sz, NULL, 0), EINVAL,
+	    "mallctl() should return EINVAL for output size mismatch");
+	sz = sizeof(epoch)+1;
+	expect_d_eq(mallctl("epoch", (void *)&epoch, &sz, NULL, 0), EINVAL,
+	    "mallctl() should return EINVAL for output size mismatch");
+}
+TEST_END
+
+TEST_BEGIN(test_mallctlnametomib_errors) {
+	size_t mib[1];
+	size_t miblen;
+
+	miblen = sizeof(mib)/sizeof(size_t);
+	expect_d_eq(mallctlnametomib("no_such_name", mib, &miblen), ENOENT,
+	    "mallctlnametomib() should return ENOENT for non-existent names");
+}
+TEST_END
+
+TEST_BEGIN(test_mallctlbymib_errors) {
+	uint64_t epoch;
+	size_t sz;
+	size_t mib[1];
+	size_t miblen;
+
+	miblen = sizeof(mib)/sizeof(size_t);
+	expect_d_eq(mallctlnametomib("version", mib, &miblen), 0,
+	    "Unexpected mallctlnametomib() failure");
+
+	expect_d_eq(mallctlbymib(mib, miblen, NULL, NULL, "0.0.0",
+	    strlen("0.0.0")), EPERM, "mallctl() should return EPERM on "
+	    "attempt to write read-only value");
+
+	miblen = sizeof(mib)/sizeof(size_t);
+	expect_d_eq(mallctlnametomib("epoch", mib, &miblen), 0,
+	    "Unexpected mallctlnametomib() failure");
+
+	expect_d_eq(mallctlbymib(mib, miblen, NULL, NULL, (void *)&epoch,
+	    sizeof(epoch)-1), EINVAL,
+	    "mallctlbymib() should return EINVAL for input size mismatch");
+	expect_d_eq(mallctlbymib(mib, miblen, NULL, NULL, (void *)&epoch,
+	    sizeof(epoch)+1), EINVAL,
+	    "mallctlbymib() should return EINVAL for input size mismatch");
+
+	sz = sizeof(epoch)-1;
+	expect_d_eq(mallctlbymib(mib, miblen, (void *)&epoch, &sz, NULL, 0),
+	    EINVAL,
+	    "mallctlbymib() should return EINVAL for output size mismatch");
+	sz = sizeof(epoch)+1;
+	expect_d_eq(mallctlbymib(mib, miblen, (void *)&epoch, &sz, NULL, 0),
+	    EINVAL,
+	    "mallctlbymib() should return EINVAL for output size mismatch");
+}
+TEST_END
+
+TEST_BEGIN(test_mallctl_read_write) {
+	uint64_t old_epoch, new_epoch;
+	size_t sz = sizeof(old_epoch);
+
+	/* Blind. */
+	expect_d_eq(mallctl("epoch", NULL, NULL, NULL, 0), 0,
+	    "Unexpected mallctl() failure");
+	expect_zu_eq(sz, sizeof(old_epoch), "Unexpected output size");
+
+	/* Read. */
+	expect_d_eq(mallctl("epoch", (void *)&old_epoch, &sz, NULL, 0), 0,
+	    "Unexpected mallctl() failure");
+	expect_zu_eq(sz, sizeof(old_epoch), "Unexpected output size");
+
+	/* Write. */
+	expect_d_eq(mallctl("epoch", NULL, NULL, (void *)&new_epoch,
+	    sizeof(new_epoch)), 0, "Unexpected mallctl() failure");
+	expect_zu_eq(sz, sizeof(old_epoch), "Unexpected output size");
+
+	/* Read+write. */
+	expect_d_eq(mallctl("epoch", (void *)&old_epoch, &sz,
+	    (void *)&new_epoch, sizeof(new_epoch)), 0,
+	    "Unexpected mallctl() failure");
+	expect_zu_eq(sz, sizeof(old_epoch), "Unexpected output size");
+}
+TEST_END
+
+TEST_BEGIN(test_mallctlnametomib_short_mib) {
+	size_t mib[4];
+	size_t miblen;
+
+	miblen = 3;
+	mib[3] = 42;
+	expect_d_eq(mallctlnametomib("arenas.bin.0.nregs", mib, &miblen), 0,
+	    "Unexpected mallctlnametomib() failure");
+	expect_zu_eq(miblen, 3, "Unexpected mib output length");
+	expect_zu_eq(mib[3], 42,
+	    "mallctlnametomib() wrote past the end of the input mib");
+}
+TEST_END
+
+TEST_BEGIN(test_mallctlnametomib_short_name) {
+	size_t mib[4];
+	size_t miblen;
+
+	miblen = 4;
+	mib[3] = 42;
+	expect_d_eq(mallctlnametomib("arenas.bin.0", mib, &miblen), 0,
+	    "Unexpected mallctlnametomib() failure");
+	expect_zu_eq(miblen, 3, "Unexpected mib output length");
+	expect_zu_eq(mib[3], 42,
+	    "mallctlnametomib() wrote past the end of the input mib");
+}
+TEST_END
+
+TEST_BEGIN(test_mallctlmibnametomib) {
+	size_t mib[4];
+	size_t miblen = 4;
+	uint32_t result, result_ref;
+	size_t len_result = sizeof(uint32_t);
+
+	tsd_t *tsd = tsd_fetch();
+
+	/* Error cases */
+	assert_d_eq(ctl_mibnametomib(tsd, mib, 0, "bob", &miblen), ENOENT, "");
+	assert_zu_eq(miblen, 4, "");
+	assert_d_eq(ctl_mibnametomib(tsd, mib, 0, "9999", &miblen), ENOENT, "");
+	assert_zu_eq(miblen, 4, "");
+
+	/* Valid case. */
+	assert_d_eq(ctl_mibnametomib(tsd, mib, 0, "arenas", &miblen), 0, "");
+	assert_zu_eq(miblen, 1, "");
+	miblen = 4;
+	assert_d_eq(ctl_mibnametomib(tsd, mib, 1, "bin", &miblen), 0, "");
+	assert_zu_eq(miblen, 2, "");
+	expect_d_eq(mallctlbymib(mib, miblen, &result, &len_result, NULL, 0),
+	    ENOENT, "mallctlbymib() should fail on partial path");
+
+	/* Error cases. */
+	miblen = 4;
+	assert_d_eq(ctl_mibnametomib(tsd, mib, 2, "bob", &miblen), ENOENT, "");
+	assert_zu_eq(miblen, 4, "");
+	assert_d_eq(ctl_mibnametomib(tsd, mib, 2, "9999", &miblen), ENOENT, "");
+	assert_zu_eq(miblen, 4, "");
+
+	/* Valid case. */
+	assert_d_eq(ctl_mibnametomib(tsd, mib, 2, "0", &miblen), 0, "");
+	assert_zu_eq(miblen, 3, "");
+	expect_d_eq(mallctlbymib(mib, miblen, &result, &len_result, NULL, 0),
+	    ENOENT, "mallctlbymib() should fail on partial path");
+
+	/* Error cases. */
+	miblen = 4;
+	assert_d_eq(ctl_mibnametomib(tsd, mib, 3, "bob", &miblen), ENOENT, "");
+	assert_zu_eq(miblen, 4, "");
+	assert_d_eq(ctl_mibnametomib(tsd, mib, 3, "9999", &miblen), ENOENT, "");
+	assert_zu_eq(miblen, 4, "");
+
+	/* Valid case. */
+	assert_d_eq(ctl_mibnametomib(tsd, mib, 3, "nregs", &miblen), 0, "");
+	assert_zu_eq(miblen, 4, "");
+	assert_d_eq(mallctlbymib(mib, miblen, &result, &len_result, NULL, 0),
+	    0, "Unexpected mallctlbymib() failure");
+	assert_d_eq(mallctl("arenas.bin.0.nregs", &result_ref, &len_result,
+	    NULL, 0), 0, "Unexpected mallctl() failure");
+	expect_zu_eq(result, result_ref,
+	    "mallctlbymib() and mallctl() returned different result");
+}
+TEST_END
+
+TEST_BEGIN(test_mallctlbymibname) {
+	size_t mib[4];
+	size_t miblen = 4;
+	uint32_t result, result_ref;
+	size_t len_result = sizeof(uint32_t);
+
+	tsd_t *tsd = tsd_fetch();
+
+	/* Error cases. */
+
+	assert_d_eq(mallctlnametomib("arenas", mib, &miblen), 0,
+	    "Unexpected mallctlnametomib() failure");
+	assert_zu_eq(miblen, 1, "");
+
+	miblen = 4;
+	assert_d_eq(ctl_bymibname(tsd, mib, 1, "bin.0", &miblen,
+	    &result, &len_result, NULL, 0), ENOENT, "");
+	miblen = 4;
+	assert_d_eq(ctl_bymibname(tsd, mib, 1, "bin.0.bob", &miblen,
+	    &result, &len_result, NULL, 0), ENOENT, "");
+	assert_zu_eq(miblen, 4, "");
+
+	/* Valid cases. */
+
+	assert_d_eq(mallctl("arenas.bin.0.nregs", &result_ref, &len_result,
+	    NULL, 0), 0, "Unexpected mallctl() failure");
+	miblen = 4;
+
+	assert_d_eq(ctl_bymibname(tsd, mib, 0, "arenas.bin.0.nregs", &miblen,
+	    &result, &len_result, NULL, 0), 0, "");
+	assert_zu_eq(miblen, 4, "");
+	expect_zu_eq(result, result_ref, "Unexpected result");
+
+	assert_d_eq(ctl_bymibname(tsd, mib, 1, "bin.0.nregs", &miblen, &result,
+	    &len_result, NULL, 0), 0, "");
+	assert_zu_eq(miblen, 4, "");
+	expect_zu_eq(result, result_ref, "Unexpected result");
+
+	assert_d_eq(ctl_bymibname(tsd, mib, 2, "0.nregs", &miblen, &result,
+	    &len_result, NULL, 0), 0, "");
+	assert_zu_eq(miblen, 4, "");
+	expect_zu_eq(result, result_ref, "Unexpected result");
+
+	assert_d_eq(ctl_bymibname(tsd, mib, 3, "nregs", &miblen, &result,
+	    &len_result, NULL, 0), 0, "");
+	assert_zu_eq(miblen, 4, "");
+	expect_zu_eq(result, result_ref, "Unexpected result");
+}
+TEST_END
+
+TEST_BEGIN(test_mallctl_config) {
+#define TEST_MALLCTL_CONFIG(config, t) do {				\
+	t oldval;							\
+	size_t sz = sizeof(oldval);					\
+	expect_d_eq(mallctl("config."#config, (void *)&oldval, &sz,	\
+	    NULL, 0), 0, "Unexpected mallctl() failure");		\
+	expect_b_eq(oldval, config_##config, "Incorrect config value");	\
+	expect_zu_eq(sz, sizeof(oldval), "Unexpected output size");	\
+} while (0)
+
+	TEST_MALLCTL_CONFIG(cache_oblivious, bool);
+	TEST_MALLCTL_CONFIG(debug, bool);
+	TEST_MALLCTL_CONFIG(fill, bool);
+	TEST_MALLCTL_CONFIG(lazy_lock, bool);
+	TEST_MALLCTL_CONFIG(malloc_conf, const char *);
+	TEST_MALLCTL_CONFIG(prof, bool);
+	TEST_MALLCTL_CONFIG(prof_libgcc, bool);
+	TEST_MALLCTL_CONFIG(prof_libunwind, bool);
+	TEST_MALLCTL_CONFIG(stats, bool);
+	TEST_MALLCTL_CONFIG(utrace, bool);
+	TEST_MALLCTL_CONFIG(xmalloc, bool);
+
+#undef TEST_MALLCTL_CONFIG
+}
+TEST_END
+
+TEST_BEGIN(test_mallctl_opt) {
+	bool config_always = true;
+
+#define TEST_MALLCTL_OPT(t, opt, config) do {				\
+	t oldval;							\
+	size_t sz = sizeof(oldval);					\
+	int expected = config_##config ? 0 : ENOENT;			\
+	int result = mallctl("opt."#opt, (void *)&oldval, &sz, NULL,	\
+	    0);								\
+	expect_d_eq(result, expected,					\
+	    "Unexpected mallctl() result for opt."#opt);		\
+	expect_zu_eq(sz, sizeof(oldval), "Unexpected output size");	\
+} while (0)
+
+	TEST_MALLCTL_OPT(bool, abort, always);
+	TEST_MALLCTL_OPT(bool, abort_conf, always);
+	TEST_MALLCTL_OPT(bool, cache_oblivious, always);
+	TEST_MALLCTL_OPT(bool, trust_madvise, always);
+	TEST_MALLCTL_OPT(bool, confirm_conf, always);
+	TEST_MALLCTL_OPT(const char *, metadata_thp, always);
+	TEST_MALLCTL_OPT(bool, retain, always);
+	TEST_MALLCTL_OPT(const char *, dss, always);
+	TEST_MALLCTL_OPT(bool, hpa, always);
+	TEST_MALLCTL_OPT(size_t, hpa_slab_max_alloc, always);
+	TEST_MALLCTL_OPT(size_t, hpa_sec_nshards, always);
+	TEST_MALLCTL_OPT(size_t, hpa_sec_max_alloc, always);
+	TEST_MALLCTL_OPT(size_t, hpa_sec_max_bytes, always);
+	TEST_MALLCTL_OPT(size_t, hpa_sec_bytes_after_flush, always);
+	TEST_MALLCTL_OPT(size_t, hpa_sec_batch_fill_extra, always);
+	TEST_MALLCTL_OPT(unsigned, narenas, always);
+	TEST_MALLCTL_OPT(const char *, percpu_arena, always);
+	TEST_MALLCTL_OPT(size_t, oversize_threshold, always);
+	TEST_MALLCTL_OPT(bool, background_thread, always);
+	TEST_MALLCTL_OPT(ssize_t, dirty_decay_ms, always);
+	TEST_MALLCTL_OPT(ssize_t, muzzy_decay_ms, always);
+	TEST_MALLCTL_OPT(bool, stats_print, always);
+	TEST_MALLCTL_OPT(const char *, stats_print_opts, always);
+	TEST_MALLCTL_OPT(int64_t, stats_interval, always);
+	TEST_MALLCTL_OPT(const char *, stats_interval_opts, always);
+	TEST_MALLCTL_OPT(const char *, junk, fill);
+	TEST_MALLCTL_OPT(bool, zero, fill);
+	TEST_MALLCTL_OPT(bool, utrace, utrace);
+	TEST_MALLCTL_OPT(bool, xmalloc, xmalloc);
+	TEST_MALLCTL_OPT(bool, tcache, always);
+	TEST_MALLCTL_OPT(size_t, lg_extent_max_active_fit, always);
+	TEST_MALLCTL_OPT(size_t, tcache_max, always);
+	TEST_MALLCTL_OPT(const char *, thp, always);
+	TEST_MALLCTL_OPT(const char *, zero_realloc, always);
+	TEST_MALLCTL_OPT(bool, prof, prof);
+	TEST_MALLCTL_OPT(const char *, prof_prefix, prof);
+	TEST_MALLCTL_OPT(bool, prof_active, prof);
+	TEST_MALLCTL_OPT(ssize_t, lg_prof_sample, prof);
+	TEST_MALLCTL_OPT(bool, prof_accum, prof);
+	TEST_MALLCTL_OPT(ssize_t, lg_prof_interval, prof);
+	TEST_MALLCTL_OPT(bool, prof_gdump, prof);
+	TEST_MALLCTL_OPT(bool, prof_final, prof);
+	TEST_MALLCTL_OPT(bool, prof_leak, prof);
+	TEST_MALLCTL_OPT(bool, prof_leak_error, prof);
+	TEST_MALLCTL_OPT(ssize_t, prof_recent_alloc_max, prof);
+	TEST_MALLCTL_OPT(bool, prof_stats, prof);
+	TEST_MALLCTL_OPT(bool, prof_sys_thread_name, prof);
+	TEST_MALLCTL_OPT(ssize_t, lg_san_uaf_align, uaf_detection);
+
+#undef TEST_MALLCTL_OPT
+}
+TEST_END
+
+TEST_BEGIN(test_manpage_example) {
+	unsigned nbins, i;
+	size_t mib[4];
+	size_t len, miblen;
+
+	len = sizeof(nbins);
+	expect_d_eq(mallctl("arenas.nbins", (void *)&nbins, &len, NULL, 0), 0,
+	    "Unexpected mallctl() failure");
+
+	miblen = 4;
+	expect_d_eq(mallctlnametomib("arenas.bin.0.size", mib, &miblen), 0,
+	    "Unexpected mallctlnametomib() failure");
+	for (i = 0; i < nbins; i++) {
+		size_t bin_size;
+
+		mib[2] = i;
+		len = sizeof(bin_size);
+		expect_d_eq(mallctlbymib(mib, miblen, (void *)&bin_size, &len,
+		    NULL, 0), 0, "Unexpected mallctlbymib() failure");
+		/* Do something with bin_size... */
+	}
+}
+TEST_END
+
+TEST_BEGIN(test_tcache_none) {
+	test_skip_if(!opt_tcache);
+
+	/* Allocate p and q. */
+	void *p0 = mallocx(42, 0);
+	expect_ptr_not_null(p0, "Unexpected mallocx() failure");
+	void *q = mallocx(42, 0);
+	expect_ptr_not_null(q, "Unexpected mallocx() failure");
+
+	/* Deallocate p and q, but bypass the tcache for q. */
+	dallocx(p0, 0);
+	dallocx(q, MALLOCX_TCACHE_NONE);
+
+	/* Make sure that tcache-based allocation returns p, not q. */
+	void *p1 = mallocx(42, 0);
+	expect_ptr_not_null(p1, "Unexpected mallocx() failure");
+	if (!opt_prof && !san_uaf_detection_enabled()) {
+		expect_ptr_eq(p0, p1,
+		    "Expected tcache to allocate cached region");
+	}
+
+	/* Clean up. */
+	dallocx(p1, MALLOCX_TCACHE_NONE);
+}
+TEST_END
+
+TEST_BEGIN(test_tcache) {
+#define NTCACHES	10
+	unsigned tis[NTCACHES];
+	void *ps[NTCACHES];
+	void *qs[NTCACHES];
+	unsigned i;
+	size_t sz, psz, qsz;
+
+	psz = 42;
+	qsz = nallocx(psz, 0) + 1;
+
+	/* Create tcaches. */
+	for (i = 0; i < NTCACHES; i++) {
+		sz = sizeof(unsigned);
+		expect_d_eq(mallctl("tcache.create", (void *)&tis[i], &sz, NULL,
+		    0), 0, "Unexpected mallctl() failure, i=%u", i);
+	}
+
+	/* Exercise tcache ID recycling. */
+	for (i = 0; i < NTCACHES; i++) {
+		expect_d_eq(mallctl("tcache.destroy", NULL, NULL,
+		    (void *)&tis[i], sizeof(unsigned)), 0,
+		    "Unexpected mallctl() failure, i=%u", i);
+	}
+	for (i = 0; i < NTCACHES; i++) {
+		sz = sizeof(unsigned);
+		expect_d_eq(mallctl("tcache.create", (void *)&tis[i], &sz, NULL,
+		    0), 0, "Unexpected mallctl() failure, i=%u", i);
+	}
+
+	/* Flush empty tcaches. */
+	for (i = 0; i < NTCACHES; i++) {
+		expect_d_eq(mallctl("tcache.flush", NULL, NULL, (void *)&tis[i],
+		    sizeof(unsigned)), 0, "Unexpected mallctl() failure, i=%u",
+		    i);
+	}
+
+	/* Cache some allocations. */
+	for (i = 0; i < NTCACHES; i++) {
+		ps[i] = mallocx(psz, MALLOCX_TCACHE(tis[i]));
+		expect_ptr_not_null(ps[i], "Unexpected mallocx() failure, i=%u",
+		    i);
+		dallocx(ps[i], MALLOCX_TCACHE(tis[i]));
+
+		qs[i] = mallocx(qsz, MALLOCX_TCACHE(tis[i]));
+		expect_ptr_not_null(qs[i], "Unexpected mallocx() failure, i=%u",
+		    i);
+		dallocx(qs[i], MALLOCX_TCACHE(tis[i]));
+	}
+
+	/* Verify that tcaches allocate cached regions. */
+	for (i = 0; i < NTCACHES; i++) {
+		void *p0 = ps[i];
+		ps[i] = mallocx(psz, MALLOCX_TCACHE(tis[i]));
+		expect_ptr_not_null(ps[i], "Unexpected mallocx() failure, i=%u",
+		    i);
+		if (!san_uaf_detection_enabled()) {
+			expect_ptr_eq(ps[i], p0, "Expected mallocx() to "
+			    "allocate cached region, i=%u", i);
+		}
+	}
+
+	/* Verify that reallocation uses cached regions. */
+	for (i = 0; i < NTCACHES; i++) {
+		void *q0 = qs[i];
+		qs[i] = rallocx(ps[i], qsz, MALLOCX_TCACHE(tis[i]));
+		expect_ptr_not_null(qs[i], "Unexpected rallocx() failure, i=%u",
+		    i);
+		if (!san_uaf_detection_enabled()) {
+			expect_ptr_eq(qs[i], q0, "Expected rallocx() to "
+			    "allocate cached region, i=%u", i);
+		}
+		/* Avoid undefined behavior in case of test failure. */
+		if (qs[i] == NULL) {
+			qs[i] = ps[i];
+		}
+	}
+	for (i = 0; i < NTCACHES; i++) {
+		dallocx(qs[i], MALLOCX_TCACHE(tis[i]));
+	}
+
+	/* Flush some non-empty tcaches. */
+	for (i = 0; i < NTCACHES/2; i++) {
+		expect_d_eq(mallctl("tcache.flush", NULL, NULL, (void *)&tis[i],
+		    sizeof(unsigned)), 0, "Unexpected mallctl() failure, i=%u",
+		    i);
+	}
+
+	/* Destroy tcaches. */
+	for (i = 0; i < NTCACHES; i++) {
+		expect_d_eq(mallctl("tcache.destroy", NULL, NULL,
+		    (void *)&tis[i], sizeof(unsigned)), 0,
+		    "Unexpected mallctl() failure, i=%u", i);
+	}
+}
+TEST_END
+
+TEST_BEGIN(test_thread_arena) {
+	unsigned old_arena_ind, new_arena_ind, narenas;
+
+	const char *opa;
+	size_t sz = sizeof(opa);
+	expect_d_eq(mallctl("opt.percpu_arena", (void *)&opa, &sz, NULL, 0), 0,
+	    "Unexpected mallctl() failure");
+
+	sz = sizeof(unsigned);
+	expect_d_eq(mallctl("arenas.narenas", (void *)&narenas, &sz, NULL, 0),
+	    0, "Unexpected mallctl() failure");
+	if (opt_oversize_threshold != 0) {
+		narenas--;
+	}
+	expect_u_eq(narenas, opt_narenas, "Number of arenas incorrect");
+
+	if (strcmp(opa, "disabled") == 0) {
+		new_arena_ind = narenas - 1;
+		expect_d_eq(mallctl("thread.arena", (void *)&old_arena_ind, &sz,
+		    (void *)&new_arena_ind, sizeof(unsigned)), 0,
+		    "Unexpected mallctl() failure");
+		new_arena_ind = 0;
+		expect_d_eq(mallctl("thread.arena", (void *)&old_arena_ind, &sz,
+		    (void *)&new_arena_ind, sizeof(unsigned)), 0,
+		    "Unexpected mallctl() failure");
+	} else {
+		expect_d_eq(mallctl("thread.arena", (void *)&old_arena_ind, &sz,
+		    NULL, 0), 0, "Unexpected mallctl() failure");
+		new_arena_ind = percpu_arena_ind_limit(opt_percpu_arena) - 1;
+		if (old_arena_ind != new_arena_ind) {
+			expect_d_eq(mallctl("thread.arena",
+			    (void *)&old_arena_ind, &sz, (void *)&new_arena_ind,
+			    sizeof(unsigned)), EPERM, "thread.arena ctl "
+			    "should not be allowed with percpu arena");
+		}
+	}
+}
+TEST_END
+
+TEST_BEGIN(test_arena_i_initialized) {
+	unsigned narenas, i;
+	size_t sz;
+	size_t mib[3];
+	size_t miblen = sizeof(mib) / sizeof(size_t);
+	bool initialized;
+
+	sz = sizeof(narenas);
+	expect_d_eq(mallctl("arenas.narenas", (void *)&narenas, &sz, NULL, 0),
+	    0, "Unexpected mallctl() failure");
+
+	expect_d_eq(mallctlnametomib("arena.0.initialized", mib, &miblen), 0,
+	    "Unexpected mallctlnametomib() failure");
+	for (i = 0; i < narenas; i++) {
+		mib[1] = i;
+		sz = sizeof(initialized);
+		expect_d_eq(mallctlbymib(mib, miblen, &initialized, &sz, NULL,
+		    0), 0, "Unexpected mallctl() failure");
+	}
+
+	mib[1] = MALLCTL_ARENAS_ALL;
+	sz = sizeof(initialized);
+	expect_d_eq(mallctlbymib(mib, miblen, &initialized, &sz, NULL, 0), 0,
+	    "Unexpected mallctl() failure");
+	expect_true(initialized,
+	    "Merged arena statistics should always be initialized");
+
+	/* Equivalent to the above but using mallctl() directly. */
+	sz = sizeof(initialized);
+	expect_d_eq(mallctl(
+	    "arena." STRINGIFY(MALLCTL_ARENAS_ALL) ".initialized",
+	    (void *)&initialized, &sz, NULL, 0), 0,
+	    "Unexpected mallctl() failure");
+	expect_true(initialized,
+	    "Merged arena statistics should always be initialized");
+}
+TEST_END
+
+TEST_BEGIN(test_arena_i_dirty_decay_ms) {
+	ssize_t dirty_decay_ms, orig_dirty_decay_ms, prev_dirty_decay_ms;
+	size_t sz = sizeof(ssize_t);
+
+	expect_d_eq(mallctl("arena.0.dirty_decay_ms",
+	    (void *)&orig_dirty_decay_ms, &sz, NULL, 0), 0,
+	    "Unexpected mallctl() failure");
+
+	dirty_decay_ms = -2;
+	expect_d_eq(mallctl("arena.0.dirty_decay_ms", NULL, NULL,
+	    (void *)&dirty_decay_ms, sizeof(ssize_t)), EFAULT,
+	    "Unexpected mallctl() success");
+
+	dirty_decay_ms = 0x7fffffff;
+	expect_d_eq(mallctl("arena.0.dirty_decay_ms", NULL, NULL,
+	    (void *)&dirty_decay_ms, sizeof(ssize_t)), 0,
+	    "Unexpected mallctl() failure");
+
+	for (prev_dirty_decay_ms = dirty_decay_ms, dirty_decay_ms = -1;
+	    dirty_decay_ms < 20; prev_dirty_decay_ms = dirty_decay_ms,
+	    dirty_decay_ms++) {
+		ssize_t old_dirty_decay_ms;
+
+		expect_d_eq(mallctl("arena.0.dirty_decay_ms",
+		    (void *)&old_dirty_decay_ms, &sz, (void *)&dirty_decay_ms,
+		    sizeof(ssize_t)), 0, "Unexpected mallctl() failure");
+		expect_zd_eq(old_dirty_decay_ms, prev_dirty_decay_ms,
+		    "Unexpected old arena.0.dirty_decay_ms");
+	}
+}
+TEST_END
+
+TEST_BEGIN(test_arena_i_muzzy_decay_ms) {
+	ssize_t muzzy_decay_ms, orig_muzzy_decay_ms, prev_muzzy_decay_ms;
+	size_t sz = sizeof(ssize_t);
+
+	expect_d_eq(mallctl("arena.0.muzzy_decay_ms",
+	    (void *)&orig_muzzy_decay_ms, &sz, NULL, 0), 0,
+	    "Unexpected mallctl() failure");
+
+	muzzy_decay_ms = -2;
+	expect_d_eq(mallctl("arena.0.muzzy_decay_ms", NULL, NULL,
+	    (void *)&muzzy_decay_ms, sizeof(ssize_t)), EFAULT,
+	    "Unexpected mallctl() success");
+
+	muzzy_decay_ms = 0x7fffffff;
+	expect_d_eq(mallctl("arena.0.muzzy_decay_ms", NULL, NULL,
+	    (void *)&muzzy_decay_ms, sizeof(ssize_t)), 0,
+	    "Unexpected mallctl() failure");
+
+	for (prev_muzzy_decay_ms = muzzy_decay_ms, muzzy_decay_ms = -1;
+	    muzzy_decay_ms < 20; prev_muzzy_decay_ms = muzzy_decay_ms,
+	    muzzy_decay_ms++) {
+		ssize_t old_muzzy_decay_ms;
+
+		expect_d_eq(mallctl("arena.0.muzzy_decay_ms",
+		    (void *)&old_muzzy_decay_ms, &sz, (void *)&muzzy_decay_ms,
+		    sizeof(ssize_t)), 0, "Unexpected mallctl() failure");
+		expect_zd_eq(old_muzzy_decay_ms, prev_muzzy_decay_ms,
+		    "Unexpected old arena.0.muzzy_decay_ms");
+	}
+}
+TEST_END
+
+TEST_BEGIN(test_arena_i_purge) {
+	unsigned narenas;
+	size_t sz = sizeof(unsigned);
+	size_t mib[3];
+	size_t miblen = 3;
+
+	expect_d_eq(mallctl("arena.0.purge", NULL, NULL, NULL, 0), 0,
+	    "Unexpected mallctl() failure");
+
+	expect_d_eq(mallctl("arenas.narenas", (void *)&narenas, &sz, NULL, 0),
+	    0, "Unexpected mallctl() failure");
+	expect_d_eq(mallctlnametomib("arena.0.purge", mib, &miblen), 0,
+	    "Unexpected mallctlnametomib() failure");
+	mib[1] = narenas;
+	expect_d_eq(mallctlbymib(mib, miblen, NULL, NULL, NULL, 0), 0,
+	    "Unexpected mallctlbymib() failure");
+
+	mib[1] = MALLCTL_ARENAS_ALL;
+	expect_d_eq(mallctlbymib(mib, miblen, NULL, NULL, NULL, 0), 0,
+	    "Unexpected mallctlbymib() failure");
+}
+TEST_END
+
+TEST_BEGIN(test_arena_i_decay) {
+	unsigned narenas;
+	size_t sz = sizeof(unsigned);
+	size_t mib[3];
+	size_t miblen = 3;
+
+	expect_d_eq(mallctl("arena.0.decay", NULL, NULL, NULL, 0), 0,
+	    "Unexpected mallctl() failure");
+
+	expect_d_eq(mallctl("arenas.narenas", (void *)&narenas, &sz, NULL, 0),
+	    0, "Unexpected mallctl() failure");
+	expect_d_eq(mallctlnametomib("arena.0.decay", mib, &miblen), 0,
+	    "Unexpected mallctlnametomib() failure");
+	mib[1] = narenas;
+	expect_d_eq(mallctlbymib(mib, miblen, NULL, NULL, NULL, 0), 0,
+	    "Unexpected mallctlbymib() failure");
+
+	mib[1] = MALLCTL_ARENAS_ALL;
+	expect_d_eq(mallctlbymib(mib, miblen, NULL, NULL, NULL, 0), 0,
+	    "Unexpected mallctlbymib() failure");
+}
+TEST_END
+
+TEST_BEGIN(test_arena_i_dss) {
+	const char *dss_prec_old, *dss_prec_new;
+	size_t sz = sizeof(dss_prec_old);
+	size_t mib[3];
+	size_t miblen;
+
+	miblen = sizeof(mib)/sizeof(size_t);
+	expect_d_eq(mallctlnametomib("arena.0.dss", mib, &miblen), 0,
+	    "Unexpected mallctlnametomib() error");
+
+	dss_prec_new = "disabled";
+	expect_d_eq(mallctlbymib(mib, miblen, (void *)&dss_prec_old, &sz,
+	    (void *)&dss_prec_new, sizeof(dss_prec_new)), 0,
+	    "Unexpected mallctl() failure");
+	expect_str_ne(dss_prec_old, "primary",
+	    "Unexpected default for dss precedence");
+
+	expect_d_eq(mallctlbymib(mib, miblen, (void *)&dss_prec_new, &sz,
+	    (void *)&dss_prec_old, sizeof(dss_prec_old)), 0,
+	    "Unexpected mallctl() failure");
+
+	expect_d_eq(mallctlbymib(mib, miblen, (void *)&dss_prec_old, &sz, NULL,
+	    0), 0, "Unexpected mallctl() failure");
+	expect_str_ne(dss_prec_old, "primary",
+	    "Unexpected value for dss precedence");
+
+	mib[1] = narenas_total_get();
+	dss_prec_new = "disabled";
+	expect_d_eq(mallctlbymib(mib, miblen, (void *)&dss_prec_old, &sz,
+	    (void *)&dss_prec_new, sizeof(dss_prec_new)), 0,
+	    "Unexpected mallctl() failure");
+	expect_str_ne(dss_prec_old, "primary",
+	    "Unexpected default for dss precedence");
+
+	expect_d_eq(mallctlbymib(mib, miblen, (void *)&dss_prec_new, &sz,
+	    (void *)&dss_prec_old, sizeof(dss_prec_new)), 0,
+	    "Unexpected mallctl() failure");
+
+	expect_d_eq(mallctlbymib(mib, miblen, (void *)&dss_prec_old, &sz, NULL,
+	    0), 0, "Unexpected mallctl() failure");
+	expect_str_ne(dss_prec_old, "primary",
+	    "Unexpected value for dss precedence");
+}
+TEST_END
+
+TEST_BEGIN(test_arena_i_retain_grow_limit) {
+	size_t old_limit, new_limit, default_limit;
+	size_t mib[3];
+	size_t miblen;
+
+	bool retain_enabled;
+	size_t sz = sizeof(retain_enabled);
+	expect_d_eq(mallctl("opt.retain", &retain_enabled, &sz, NULL, 0),
+	    0, "Unexpected mallctl() failure");
+	test_skip_if(!retain_enabled);
+
+	sz = sizeof(default_limit);
+	miblen = sizeof(mib)/sizeof(size_t);
+	expect_d_eq(mallctlnametomib("arena.0.retain_grow_limit", mib, &miblen),
+	    0, "Unexpected mallctlnametomib() error");
+
+	expect_d_eq(mallctlbymib(mib, miblen, &default_limit, &sz, NULL, 0), 0,
+	    "Unexpected mallctl() failure");
+	expect_zu_eq(default_limit, SC_LARGE_MAXCLASS,
+	    "Unexpected default for retain_grow_limit");
+
+	new_limit = PAGE - 1;
+	expect_d_eq(mallctlbymib(mib, miblen, NULL, NULL, &new_limit,
+	    sizeof(new_limit)), EFAULT, "Unexpected mallctl() success");
+
+	new_limit = PAGE + 1;
+	expect_d_eq(mallctlbymib(mib, miblen, NULL, NULL, &new_limit,
+	    sizeof(new_limit)), 0, "Unexpected mallctl() failure");
+	expect_d_eq(mallctlbymib(mib, miblen, &old_limit, &sz, NULL, 0), 0,
+	    "Unexpected mallctl() failure");
+	expect_zu_eq(old_limit, PAGE,
+	    "Unexpected value for retain_grow_limit");
+
+	/* Expect grow less than psize class 10. */
+	new_limit = sz_pind2sz(10) - 1;
+	expect_d_eq(mallctlbymib(mib, miblen, NULL, NULL, &new_limit,
+	    sizeof(new_limit)), 0, "Unexpected mallctl() failure");
+	expect_d_eq(mallctlbymib(mib, miblen, &old_limit, &sz, NULL, 0), 0,
+	    "Unexpected mallctl() failure");
+	expect_zu_eq(old_limit, sz_pind2sz(9),
+	    "Unexpected value for retain_grow_limit");
+
+	/* Restore to default. */
+	expect_d_eq(mallctlbymib(mib, miblen, NULL, NULL, &default_limit,
+	    sizeof(default_limit)), 0, "Unexpected mallctl() failure");
+}
+TEST_END
+
+TEST_BEGIN(test_arenas_dirty_decay_ms) {
+	ssize_t dirty_decay_ms, orig_dirty_decay_ms, prev_dirty_decay_ms;
+	size_t sz = sizeof(ssize_t);
+
+	expect_d_eq(mallctl("arenas.dirty_decay_ms",
+	    (void *)&orig_dirty_decay_ms, &sz, NULL, 0), 0,
+	    "Unexpected mallctl() failure");
+
+	dirty_decay_ms = -2;
+	expect_d_eq(mallctl("arenas.dirty_decay_ms", NULL, NULL,
+	    (void *)&dirty_decay_ms, sizeof(ssize_t)), EFAULT,
+	    "Unexpected mallctl() success");
+
+	dirty_decay_ms = 0x7fffffff;
+	expect_d_eq(mallctl("arenas.dirty_decay_ms", NULL, NULL,
+	    (void *)&dirty_decay_ms, sizeof(ssize_t)), 0,
+	    "Expected mallctl() failure");
+
+	for (prev_dirty_decay_ms = dirty_decay_ms, dirty_decay_ms = -1;
+	    dirty_decay_ms < 20; prev_dirty_decay_ms = dirty_decay_ms,
+	    dirty_decay_ms++) {
+		ssize_t old_dirty_decay_ms;
+
+		expect_d_eq(mallctl("arenas.dirty_decay_ms",
+		    (void *)&old_dirty_decay_ms, &sz, (void *)&dirty_decay_ms,
+		    sizeof(ssize_t)), 0, "Unexpected mallctl() failure");
+		expect_zd_eq(old_dirty_decay_ms, prev_dirty_decay_ms,
+		    "Unexpected old arenas.dirty_decay_ms");
+	}
+}
+TEST_END
+
+TEST_BEGIN(test_arenas_muzzy_decay_ms) {
+	ssize_t muzzy_decay_ms, orig_muzzy_decay_ms, prev_muzzy_decay_ms;
+	size_t sz = sizeof(ssize_t);
+
+	expect_d_eq(mallctl("arenas.muzzy_decay_ms",
+	    (void *)&orig_muzzy_decay_ms, &sz, NULL, 0), 0,
+	    "Unexpected mallctl() failure");
+
+	muzzy_decay_ms = -2;
+	expect_d_eq(mallctl("arenas.muzzy_decay_ms", NULL, NULL,
+	    (void *)&muzzy_decay_ms, sizeof(ssize_t)), EFAULT,
+	    "Unexpected mallctl() success");
+
+	muzzy_decay_ms = 0x7fffffff;
+	expect_d_eq(mallctl("arenas.muzzy_decay_ms", NULL, NULL,
+	    (void *)&muzzy_decay_ms, sizeof(ssize_t)), 0,
+	    "Expected mallctl() failure");
+
+	for (prev_muzzy_decay_ms = muzzy_decay_ms, muzzy_decay_ms = -1;
+	    muzzy_decay_ms < 20; prev_muzzy_decay_ms = muzzy_decay_ms,
+	    muzzy_decay_ms++) {
+		ssize_t old_muzzy_decay_ms;
+
+		expect_d_eq(mallctl("arenas.muzzy_decay_ms",
+		    (void *)&old_muzzy_decay_ms, &sz, (void *)&muzzy_decay_ms,
+		    sizeof(ssize_t)), 0, "Unexpected mallctl() failure");
+		expect_zd_eq(old_muzzy_decay_ms, prev_muzzy_decay_ms,
+		    "Unexpected old arenas.muzzy_decay_ms");
+	}
+}
+TEST_END
+
+TEST_BEGIN(test_arenas_constants) {
+#define TEST_ARENAS_CONSTANT(t, name, expected) do {			\
+	t name;								\
+	size_t sz = sizeof(t);						\
+	expect_d_eq(mallctl("arenas."#name, (void *)&name, &sz, NULL,	\
+	    0), 0, "Unexpected mallctl() failure");			\
+	expect_zu_eq(name, expected, "Incorrect "#name" size");		\
+} while (0)
+
+	TEST_ARENAS_CONSTANT(size_t, quantum, QUANTUM);
+	TEST_ARENAS_CONSTANT(size_t, page, PAGE);
+	TEST_ARENAS_CONSTANT(unsigned, nbins, SC_NBINS);
+	TEST_ARENAS_CONSTANT(unsigned, nlextents, SC_NSIZES - SC_NBINS);
+
+#undef TEST_ARENAS_CONSTANT
+}
+TEST_END
+
+TEST_BEGIN(test_arenas_bin_constants) {
+#define TEST_ARENAS_BIN_CONSTANT(t, name, expected) do {		\
+	t name;								\
+	size_t sz = sizeof(t);						\
+	expect_d_eq(mallctl("arenas.bin.0."#name, (void *)&name, &sz,	\
+	    NULL, 0), 0, "Unexpected mallctl() failure");		\
+	expect_zu_eq(name, expected, "Incorrect "#name" size");		\
+} while (0)
+
+	TEST_ARENAS_BIN_CONSTANT(size_t, size, bin_infos[0].reg_size);
+	TEST_ARENAS_BIN_CONSTANT(uint32_t, nregs, bin_infos[0].nregs);
+	TEST_ARENAS_BIN_CONSTANT(size_t, slab_size,
+	    bin_infos[0].slab_size);
+	TEST_ARENAS_BIN_CONSTANT(uint32_t, nshards, bin_infos[0].n_shards);
+
+#undef TEST_ARENAS_BIN_CONSTANT
+}
+TEST_END
+
+TEST_BEGIN(test_arenas_lextent_constants) {
+#define TEST_ARENAS_LEXTENT_CONSTANT(t, name, expected) do {		\
+	t name;								\
+	size_t sz = sizeof(t);						\
+	expect_d_eq(mallctl("arenas.lextent.0."#name, (void *)&name,	\
+	    &sz, NULL, 0), 0, "Unexpected mallctl() failure");		\
+	expect_zu_eq(name, expected, "Incorrect "#name" size");		\
+} while (0)
+
+	TEST_ARENAS_LEXTENT_CONSTANT(size_t, size,
+	    SC_LARGE_MINCLASS);
+
+#undef TEST_ARENAS_LEXTENT_CONSTANT
+}
+TEST_END
+
+TEST_BEGIN(test_arenas_create) {
+	unsigned narenas_before, arena, narenas_after;
+	size_t sz = sizeof(unsigned);
+
+	expect_d_eq(mallctl("arenas.narenas", (void *)&narenas_before, &sz,
+	    NULL, 0), 0, "Unexpected mallctl() failure");
+	expect_d_eq(mallctl("arenas.create", (void *)&arena, &sz, NULL, 0), 0,
+	    "Unexpected mallctl() failure");
+	expect_d_eq(mallctl("arenas.narenas", (void *)&narenas_after, &sz, NULL,
+	    0), 0, "Unexpected mallctl() failure");
+
+	expect_u_eq(narenas_before+1, narenas_after,
+	    "Unexpected number of arenas before versus after extension");
+	expect_u_eq(arena, narenas_after-1, "Unexpected arena index");
+}
+TEST_END
+
+TEST_BEGIN(test_arenas_lookup) {
+	unsigned arena, arena1;
+	void *ptr;
+	size_t sz = sizeof(unsigned);
+
+	expect_d_eq(mallctl("arenas.create", (void *)&arena, &sz, NULL, 0), 0,
+	    "Unexpected mallctl() failure");
+	ptr = mallocx(42, MALLOCX_ARENA(arena) | MALLOCX_TCACHE_NONE);
+	expect_ptr_not_null(ptr, "Unexpected mallocx() failure");
+	expect_d_eq(mallctl("arenas.lookup", &arena1, &sz, &ptr, sizeof(ptr)),
+	    0, "Unexpected mallctl() failure");
+	expect_u_eq(arena, arena1, "Unexpected arena index");
+	dallocx(ptr, 0);
+}
+TEST_END
+
+TEST_BEGIN(test_prof_active) {
+	/*
+	 * If config_prof is off, then the test for prof_active in
+	 * test_mallctl_opt was already enough.
+	 */
+	test_skip_if(!config_prof);
+	test_skip_if(opt_prof);
+
+	bool active, old;
+	size_t len = sizeof(bool);
+
+	active = true;
+	expect_d_eq(mallctl("prof.active", NULL, NULL, &active, len), ENOENT,
+	    "Setting prof_active to true should fail when opt_prof is off");
+	old = true;
+	expect_d_eq(mallctl("prof.active", &old, &len, &active, len), ENOENT,
+	    "Setting prof_active to true should fail when opt_prof is off");
+	expect_true(old, "old value should not be touched when mallctl fails");
+	active = false;
+	expect_d_eq(mallctl("prof.active", NULL, NULL, &active, len), 0,
+	    "Setting prof_active to false should succeed when opt_prof is off");
+	expect_d_eq(mallctl("prof.active", &old, &len, &active, len), 0,
+	    "Setting prof_active to false should succeed when opt_prof is off");
+	expect_false(old, "prof_active should be false when opt_prof is off");
+}
+TEST_END
+
+TEST_BEGIN(test_stats_arenas) {
+#define TEST_STATS_ARENAS(t, name) do {					\
+	t name;								\
+	size_t sz = sizeof(t);						\
+	expect_d_eq(mallctl("stats.arenas.0."#name, (void *)&name, &sz,	\
+	    NULL, 0), 0, "Unexpected mallctl() failure");		\
+} while (0)
+
+	TEST_STATS_ARENAS(unsigned, nthreads);
+	TEST_STATS_ARENAS(const char *, dss);
+	TEST_STATS_ARENAS(ssize_t, dirty_decay_ms);
+	TEST_STATS_ARENAS(ssize_t, muzzy_decay_ms);
+	TEST_STATS_ARENAS(size_t, pactive);
+	TEST_STATS_ARENAS(size_t, pdirty);
+
+#undef TEST_STATS_ARENAS
+}
+TEST_END
+
+static void
+alloc_hook(void *extra, UNUSED hook_alloc_t type, UNUSED void *result,
+    UNUSED uintptr_t result_raw, UNUSED uintptr_t args_raw[3]) {
+	*(bool *)extra = true;
+}
+
+static void
+dalloc_hook(void *extra, UNUSED hook_dalloc_t type,
+    UNUSED void *address, UNUSED uintptr_t args_raw[3]) {
+	*(bool *)extra = true;
+}
+
+TEST_BEGIN(test_hooks) {
+	bool hook_called = false;
+	hooks_t hooks = {&alloc_hook, &dalloc_hook, NULL, &hook_called};
+	void *handle = NULL;
+	size_t sz = sizeof(handle);
+	int err = mallctl("experimental.hooks.install", &handle, &sz, &hooks,
+	    sizeof(hooks));
+	expect_d_eq(err, 0, "Hook installation failed");
+	expect_ptr_ne(handle, NULL, "Hook installation gave null handle");
+	void *ptr = mallocx(1, 0);
+	expect_true(hook_called, "Alloc hook not called");
+	hook_called = false;
+	free(ptr);
+	expect_true(hook_called, "Free hook not called");
+
+	err = mallctl("experimental.hooks.remove", NULL, NULL, &handle,
+	    sizeof(handle));
+	expect_d_eq(err, 0, "Hook removal failed");
+	hook_called = false;
+	ptr = mallocx(1, 0);
+	free(ptr);
+	expect_false(hook_called, "Hook called after removal");
+}
+TEST_END
+
+TEST_BEGIN(test_hooks_exhaustion) {
+	bool hook_called = false;
+	hooks_t hooks = {&alloc_hook, &dalloc_hook, NULL, &hook_called};
+
+	void *handle;
+	void *handles[HOOK_MAX];
+	size_t sz = sizeof(handle);
+	int err;
+	for (int i = 0; i < HOOK_MAX; i++) {
+		handle = NULL;
+		err = mallctl("experimental.hooks.install", &handle, &sz,
+		    &hooks, sizeof(hooks));
+		expect_d_eq(err, 0, "Error installation hooks");
+		expect_ptr_ne(handle, NULL, "Got NULL handle");
+		handles[i] = handle;
+	}
+	err = mallctl("experimental.hooks.install", &handle, &sz, &hooks,
+	    sizeof(hooks));
+	expect_d_eq(err, EAGAIN, "Should have failed hook installation");
+	for (int i = 0; i < HOOK_MAX; i++) {
+		err = mallctl("experimental.hooks.remove", NULL, NULL,
+		    &handles[i], sizeof(handles[i]));
+		expect_d_eq(err, 0, "Hook removal failed");
+	}
+	/* Insertion failed, but then we removed some; it should work now. */
+	handle = NULL;
+	err = mallctl("experimental.hooks.install", &handle, &sz, &hooks,
+	    sizeof(hooks));
+	expect_d_eq(err, 0, "Hook insertion failed");
+	expect_ptr_ne(handle, NULL, "Got NULL handle");
+	err = mallctl("experimental.hooks.remove", NULL, NULL, &handle,
+	    sizeof(handle));
+	expect_d_eq(err, 0, "Hook removal failed");
+}
+TEST_END
+
+TEST_BEGIN(test_thread_idle) {
+	/*
+	 * We're cheating a little bit in this test, and inferring things about
+	 * implementation internals (like tcache details).  We have to;
+	 * thread.idle has no guaranteed effects.  We need stats to make these
+	 * inferences.
+	 */
+	test_skip_if(!config_stats);
+
+	int err;
+	size_t sz;
+	size_t miblen;
+
+	bool tcache_enabled = false;
+	sz = sizeof(tcache_enabled);
+	err = mallctl("thread.tcache.enabled", &tcache_enabled, &sz, NULL, 0);
+	expect_d_eq(err, 0, "");
+	test_skip_if(!tcache_enabled);
+
+	size_t tcache_max;
+	sz = sizeof(tcache_max);
+	err = mallctl("arenas.tcache_max", &tcache_max, &sz, NULL, 0);
+	expect_d_eq(err, 0, "");
+	test_skip_if(tcache_max == 0);
+
+	unsigned arena_ind;
+	sz = sizeof(arena_ind);
+	err = mallctl("thread.arena", &arena_ind, &sz, NULL, 0);
+	expect_d_eq(err, 0, "");
+
+	/* We're going to do an allocation of size 1, which we know is small. */
+	size_t mib[5];
+	miblen = sizeof(mib)/sizeof(mib[0]);
+	err = mallctlnametomib("stats.arenas.0.small.ndalloc", mib, &miblen);
+	expect_d_eq(err, 0, "");
+	mib[2] = arena_ind;
+
+	/*
+	 * This alloc and dalloc should leave something in the tcache, in a
+	 * small size's cache bin.
+	 */
+	void *ptr = mallocx(1, 0);
+	dallocx(ptr, 0);
+
+	uint64_t epoch;
+	err = mallctl("epoch", NULL, NULL, &epoch, sizeof(epoch));
+	expect_d_eq(err, 0, "");
+
+	uint64_t small_dalloc_pre_idle;
+	sz = sizeof(small_dalloc_pre_idle);
+	err = mallctlbymib(mib, miblen, &small_dalloc_pre_idle, &sz, NULL, 0);
+	expect_d_eq(err, 0, "");
+
+	err = mallctl("thread.idle", NULL, NULL, NULL, 0);
+	expect_d_eq(err, 0, "");
+
+	err = mallctl("epoch", NULL, NULL, &epoch, sizeof(epoch));
+	expect_d_eq(err, 0, "");
+
+	uint64_t small_dalloc_post_idle;
+	sz = sizeof(small_dalloc_post_idle);
+	err = mallctlbymib(mib, miblen, &small_dalloc_post_idle, &sz, NULL, 0);
+	expect_d_eq(err, 0, "");
+
+	expect_u64_lt(small_dalloc_pre_idle, small_dalloc_post_idle,
+	    "Purge didn't flush the tcache");
+}
+TEST_END
+
+TEST_BEGIN(test_thread_peak) {
+	test_skip_if(!config_stats);
+
+	/*
+	 * We don't commit to any stable amount of accuracy for peak tracking
+	 * (in practice, when this test was written, we made sure to be within
+	 * 100k).  But 10MB is big for more or less any definition of big.
+	 */
+	size_t big_size = 10 * 1024 * 1024;
+	size_t small_size = 256;
+
+	void *ptr;
+	int err;
+	size_t sz;
+	uint64_t peak;
+	sz = sizeof(uint64_t);
+
+	err = mallctl("thread.peak.reset", NULL, NULL, NULL, 0);
+	expect_d_eq(err, 0, "");
+	ptr = mallocx(SC_SMALL_MAXCLASS, 0);
+	err = mallctl("thread.peak.read", &peak, &sz, NULL, 0);
+	expect_d_eq(err, 0, "");
+	expect_u64_eq(peak, SC_SMALL_MAXCLASS, "Missed an update");
+	free(ptr);
+	err = mallctl("thread.peak.read", &peak, &sz, NULL, 0);
+	expect_d_eq(err, 0, "");
+	expect_u64_eq(peak, SC_SMALL_MAXCLASS, "Freeing changed peak");
+	ptr = mallocx(big_size, 0);
+	free(ptr);
+	/*
+	 * The peak should have hit big_size in the last two lines, even though
+	 * the net allocated bytes has since dropped back down to zero.  We
+	 * should have noticed the peak change without having down any mallctl
+	 * calls while net allocated bytes was high.
+	 */
+	err = mallctl("thread.peak.read", &peak, &sz, NULL, 0);
+	expect_d_eq(err, 0, "");
+	expect_u64_ge(peak, big_size, "Missed a peak change.");
+
+	/* Allocate big_size, but using small allocations. */
+	size_t nallocs = big_size / small_size;
+	void **ptrs = calloc(nallocs, sizeof(void *));
+	err = mallctl("thread.peak.reset", NULL, NULL, NULL, 0);
+	expect_d_eq(err, 0, "");
+	err = mallctl("thread.peak.read", &peak, &sz, NULL, 0);
+	expect_d_eq(err, 0, "");
+	expect_u64_eq(0, peak, "Missed a reset.");
+	for (size_t i = 0; i < nallocs; i++) {
+		ptrs[i] = mallocx(small_size, 0);
+	}
+	for (size_t i = 0; i < nallocs; i++) {
+		free(ptrs[i]);
+	}
+	err = mallctl("thread.peak.read", &peak, &sz, NULL, 0);
+	expect_d_eq(err, 0, "");
+	/*
+	 * We don't guarantee exactness; make sure we're within 10% of the peak,
+	 * though.
+	 */
+	expect_u64_ge(peak, nallocx(small_size, 0) * nallocs * 9 / 10,
+	    "Missed some peak changes.");
+	expect_u64_le(peak, nallocx(small_size, 0) * nallocs * 11 / 10,
+	    "Overcounted peak changes.");
+	free(ptrs);
+}
+TEST_END
+
+typedef struct activity_test_data_s activity_test_data_t;
+struct activity_test_data_s {
+	uint64_t obtained_alloc;
+	uint64_t obtained_dalloc;
+};
+
+static void
+activity_test_callback(void *uctx, uint64_t alloc, uint64_t dalloc) {
+	activity_test_data_t *test_data = (activity_test_data_t *)uctx;
+	test_data->obtained_alloc = alloc;
+	test_data->obtained_dalloc = dalloc;
+}
+
+TEST_BEGIN(test_thread_activity_callback) {
+	test_skip_if(!config_stats);
+
+	const size_t big_size = 10 * 1024 * 1024;
+	void *ptr;
+	int err;
+	size_t sz;
+
+	uint64_t *allocatedp;
+	uint64_t *deallocatedp;
+	sz = sizeof(allocatedp);
+	err = mallctl("thread.allocatedp", &allocatedp, &sz, NULL, 0);
+	assert_d_eq(0, err, "");
+	err = mallctl("thread.deallocatedp", &deallocatedp, &sz, NULL, 0);
+	assert_d_eq(0, err, "");
+
+	activity_callback_thunk_t old_thunk = {(activity_callback_t)111,
+		(void *)222};
+
+	activity_test_data_t test_data = {333, 444};
+	activity_callback_thunk_t new_thunk =
+	    {&activity_test_callback, &test_data};
+
+	sz = sizeof(old_thunk);
+	err = mallctl("experimental.thread.activity_callback", &old_thunk, &sz,
+	    &new_thunk, sizeof(new_thunk));
+	assert_d_eq(0, err, "");
+
+	expect_true(old_thunk.callback == NULL, "Callback already installed");
+	expect_true(old_thunk.uctx == NULL, "Callback data already installed");
+
+	ptr = mallocx(big_size, 0);
+	expect_u64_eq(test_data.obtained_alloc, *allocatedp, "");
+	expect_u64_eq(test_data.obtained_dalloc, *deallocatedp, "");
+
+	free(ptr);
+	expect_u64_eq(test_data.obtained_alloc, *allocatedp, "");
+	expect_u64_eq(test_data.obtained_dalloc, *deallocatedp, "");
+
+	sz = sizeof(old_thunk);
+	new_thunk = (activity_callback_thunk_t){ NULL, NULL };
+	err = mallctl("experimental.thread.activity_callback", &old_thunk, &sz,
+	    &new_thunk, sizeof(new_thunk));
+	assert_d_eq(0, err, "");
+
+	expect_true(old_thunk.callback == &activity_test_callback, "");
+	expect_true(old_thunk.uctx == &test_data, "");
+
+	/* Inserting NULL should have turned off tracking. */
+	test_data.obtained_alloc = 333;
+	test_data.obtained_dalloc = 444;
+	ptr = mallocx(big_size, 0);
+	free(ptr);
+	expect_u64_eq(333, test_data.obtained_alloc, "");
+	expect_u64_eq(444, test_data.obtained_dalloc, "");
+}
+TEST_END
+
+int
+main(void) {
+	return test(
+	    test_mallctl_errors,
+	    test_mallctlnametomib_errors,
+	    test_mallctlbymib_errors,
+	    test_mallctl_read_write,
+	    test_mallctlnametomib_short_mib,
+	    test_mallctlnametomib_short_name,
+	    test_mallctlmibnametomib,
+	    test_mallctlbymibname,
+	    test_mallctl_config,
+	    test_mallctl_opt,
+	    test_manpage_example,
+	    test_tcache_none,
+	    test_tcache,
+	    test_thread_arena,
+	    test_arena_i_initialized,
+	    test_arena_i_dirty_decay_ms,
+	    test_arena_i_muzzy_decay_ms,
+	    test_arena_i_purge,
+	    test_arena_i_decay,
+	    test_arena_i_dss,
+	    test_arena_i_retain_grow_limit,
+	    test_arenas_dirty_decay_ms,
+	    test_arenas_muzzy_decay_ms,
+	    test_arenas_constants,
+	    test_arenas_bin_constants,
+	    test_arenas_lextent_constants,
+	    test_arenas_create,
+	    test_arenas_lookup,
+	    test_prof_active,
+	    test_stats_arenas,
+	    test_hooks,
+	    test_hooks_exhaustion,
+	    test_thread_idle,
+	    test_thread_peak,
+	    test_thread_activity_callback);
+}
diff --git a/deps/jemalloc/test/unit/malloc_conf_2.c b/deps/jemalloc/test/unit/malloc_conf_2.c
new file mode 100644
index 0000000..ecfa499
--- /dev/null
+++ b/deps/jemalloc/test/unit/malloc_conf_2.c
@@ -0,0 +1,29 @@
+#include "test/jemalloc_test.h"
+
+const char *malloc_conf = "dirty_decay_ms:1000";
+const char *malloc_conf_2_conf_harder = "dirty_decay_ms:1234";
+
+TEST_BEGIN(test_malloc_conf_2) {
+#ifdef _WIN32
+	bool windows = true;
+#else
+	bool windows = false;
+#endif
+	/* Windows doesn't support weak symbol linker trickery. */
+	test_skip_if(windows);
+
+	ssize_t dirty_decay_ms;
+	size_t sz = sizeof(dirty_decay_ms);
+
+	int err = mallctl("opt.dirty_decay_ms", &dirty_decay_ms, &sz, NULL, 0);
+	assert_d_eq(err, 0, "Unexpected mallctl failure");
+	expect_zd_eq(dirty_decay_ms, 1234,
+	    "malloc_conf_2 setting didn't take effect");
+}
+TEST_END
+
+int
+main(void) {
+	return test(
+	    test_malloc_conf_2);
+}
diff --git a/deps/jemalloc/test/unit/malloc_conf_2.sh b/deps/jemalloc/test/unit/malloc_conf_2.sh
new file mode 100644
index 0000000..2c780f1
--- /dev/null
+++ b/deps/jemalloc/test/unit/malloc_conf_2.sh
@@ -0,0 +1 @@
+export MALLOC_CONF="dirty_decay_ms:500"
diff --git a/deps/jemalloc/test/unit/malloc_io.c b/deps/jemalloc/test/unit/malloc_io.c
new file mode 100644
index 0000000..385f745
--- /dev/null
+++ b/deps/jemalloc/test/unit/malloc_io.c
@@ -0,0 +1,268 @@
+#include "test/jemalloc_test.h"
+
+TEST_BEGIN(test_malloc_strtoumax_no_endptr) {
+	int err;
+
+	set_errno(0);
+	expect_ju_eq(malloc_strtoumax("0", NULL, 0), 0, "Unexpected result");
+	err = get_errno();
+	expect_d_eq(err, 0, "Unexpected failure");
+}
+TEST_END
+
+TEST_BEGIN(test_malloc_strtoumax) {
+	struct test_s {
+		const char *input;
+		const char *expected_remainder;
+		int base;
+		int expected_errno;
+		const char *expected_errno_name;
+		uintmax_t expected_x;
+	};
+#define ERR(e)		e, #e
+#define KUMAX(x)	((uintmax_t)x##ULL)
+#define KSMAX(x)	((uintmax_t)(intmax_t)x##LL)
+	struct test_s tests[] = {
+		{"0",		"0",	-1,	ERR(EINVAL),	UINTMAX_MAX},
+		{"0",		"0",	1,	ERR(EINVAL),	UINTMAX_MAX},
+		{"0",		"0",	37,	ERR(EINVAL),	UINTMAX_MAX},
+
+		{"",		"",	0,	ERR(EINVAL),	UINTMAX_MAX},
+		{"+",		"+",	0,	ERR(EINVAL),	UINTMAX_MAX},
+		{"++3",		"++3",	0,	ERR(EINVAL),	UINTMAX_MAX},
+		{"-",		"-",	0,	ERR(EINVAL),	UINTMAX_MAX},
+
+		{"42",		"",	0,	ERR(0),		KUMAX(42)},
+		{"+42",		"",	0,	ERR(0),		KUMAX(42)},
+		{"-42",		"",	0,	ERR(0),		KSMAX(-42)},
+		{"042",		"",	0,	ERR(0),		KUMAX(042)},
+		{"+042",	"",	0,	ERR(0),		KUMAX(042)},
+		{"-042",	"",	0,	ERR(0),		KSMAX(-042)},
+		{"0x42",	"",	0,	ERR(0),		KUMAX(0x42)},
+		{"+0x42",	"",	0,	ERR(0),		KUMAX(0x42)},
+		{"-0x42",	"",	0,	ERR(0),		KSMAX(-0x42)},
+
+		{"0",		"",	0,	ERR(0),		KUMAX(0)},
+		{"1",		"",	0,	ERR(0),		KUMAX(1)},
+
+		{"42",		"",	0,	ERR(0),		KUMAX(42)},
+		{" 42",		"",	0,	ERR(0),		KUMAX(42)},
+		{"42 ",		" ",	0,	ERR(0),		KUMAX(42)},
+		{"0x",		"x",	0,	ERR(0),		KUMAX(0)},
+		{"42x",		"x",	0,	ERR(0),		KUMAX(42)},
+
+		{"07",		"",	0,	ERR(0),		KUMAX(7)},
+		{"010",		"",	0,	ERR(0),		KUMAX(8)},
+		{"08",		"8",	0,	ERR(0),		KUMAX(0)},
+		{"0_",		"_",	0,	ERR(0),		KUMAX(0)},
+
+		{"0x",		"x",	0,	ERR(0),		KUMAX(0)},
+		{"0X",		"X",	0,	ERR(0),		KUMAX(0)},
+		{"0xg",		"xg",	0,	ERR(0),		KUMAX(0)},
+		{"0XA",		"",	0,	ERR(0),		KUMAX(10)},
+
+		{"010",		"",	10,	ERR(0),		KUMAX(10)},
+		{"0x3",		"x3",	10,	ERR(0),		KUMAX(0)},
+
+		{"12",		"2",	2,	ERR(0),		KUMAX(1)},
+		{"78",		"8",	8,	ERR(0),		KUMAX(7)},
+		{"9a",		"a",	10,	ERR(0),		KUMAX(9)},
+		{"9A",		"A",	10,	ERR(0),		KUMAX(9)},
+		{"fg",		"g",	16,	ERR(0),		KUMAX(15)},
+		{"FG",		"G",	16,	ERR(0),		KUMAX(15)},
+		{"0xfg",	"g",	16,	ERR(0),		KUMAX(15)},
+		{"0XFG",	"G",	16,	ERR(0),		KUMAX(15)},
+		{"z_",		"_",	36,	ERR(0),		KUMAX(35)},
+		{"Z_",		"_",	36,	ERR(0),		KUMAX(35)}
+	};
+#undef ERR
+#undef KUMAX
+#undef KSMAX
+	unsigned i;
+
+	for (i = 0; i < sizeof(tests)/sizeof(struct test_s); i++) {
+		struct test_s *test = &tests[i];
+		int err;
+		uintmax_t result;
+		char *remainder;
+
+		set_errno(0);
+		result = malloc_strtoumax(test->input, &remainder, test->base);
+		err = get_errno();
+		expect_d_eq(err, test->expected_errno,
+		    "Expected errno %s for \"%s\", base %d",
+		    test->expected_errno_name, test->input, test->base);
+		expect_str_eq(remainder, test->expected_remainder,
+		    "Unexpected remainder for \"%s\", base %d",
+		    test->input, test->base);
+		if (err == 0) {
+			expect_ju_eq(result, test->expected_x,
+			    "Unexpected result for \"%s\", base %d",
+			    test->input, test->base);
+		}
+	}
+}
+TEST_END
+
+TEST_BEGIN(test_malloc_snprintf_truncated) {
+#define BUFLEN	15
+	char buf[BUFLEN];
+	size_t result;
+	size_t len;
+#define TEST(expected_str_untruncated, ...) do {			\
+	result = malloc_snprintf(buf, len, __VA_ARGS__);		\
+	expect_d_eq(strncmp(buf, expected_str_untruncated, len-1), 0,	\
+	    "Unexpected string inequality (\"%s\" vs \"%s\")",		\
+	    buf, expected_str_untruncated);				\
+	expect_zu_eq(result, strlen(expected_str_untruncated),		\
+	    "Unexpected result");					\
+} while (0)
+
+	for (len = 1; len < BUFLEN; len++) {
+		TEST("012346789",	"012346789");
+		TEST("a0123b",		"a%sb", "0123");
+		TEST("a01234567",	"a%s%s", "0123", "4567");
+		TEST("a0123  ",		"a%-6s", "0123");
+		TEST("a  0123",		"a%6s", "0123");
+		TEST("a   012",		"a%6.3s", "0123");
+		TEST("a   012",		"a%*.*s", 6, 3, "0123");
+		TEST("a 123b",		"a% db", 123);
+		TEST("a123b",		"a%-db", 123);
+		TEST("a-123b",		"a%-db", -123);
+		TEST("a+123b",		"a%+db", 123);
+	}
+#undef BUFLEN
+#undef TEST
+}
+TEST_END
+
+TEST_BEGIN(test_malloc_snprintf) {
+#define BUFLEN	128
+	char buf[BUFLEN];
+	size_t result;
+#define TEST(expected_str, ...) do {					\
+	result = malloc_snprintf(buf, sizeof(buf), __VA_ARGS__);	\
+	expect_str_eq(buf, expected_str, "Unexpected output");		\
+	expect_zu_eq(result, strlen(expected_str), "Unexpected result");\
+} while (0)
+
+	TEST("hello", "hello");
+
+	TEST("50%, 100%", "50%%, %d%%", 100);
+
+	TEST("a0123b", "a%sb", "0123");
+
+	TEST("a 0123b", "a%5sb", "0123");
+	TEST("a 0123b", "a%*sb", 5, "0123");
+
+	TEST("a0123 b", "a%-5sb", "0123");
+	TEST("a0123b", "a%*sb", -1, "0123");
+	TEST("a0123 b", "a%*sb", -5, "0123");
+	TEST("a0123 b", "a%-*sb", -5, "0123");
+
+	TEST("a012b", "a%.3sb", "0123");
+	TEST("a012b", "a%.*sb", 3, "0123");
+	TEST("a0123b", "a%.*sb", -3, "0123");
+
+	TEST("a  012b", "a%5.3sb", "0123");
+	TEST("a  012b", "a%5.*sb", 3, "0123");
+	TEST("a  012b", "a%*.3sb", 5, "0123");
+	TEST("a  012b", "a%*.*sb", 5, 3, "0123");
+	TEST("a 0123b", "a%*.*sb", 5, -3, "0123");
+
+	TEST("_abcd_", "_%x_", 0xabcd);
+	TEST("_0xabcd_", "_%#x_", 0xabcd);
+	TEST("_1234_", "_%o_", 01234);
+	TEST("_01234_", "_%#o_", 01234);
+	TEST("_1234_", "_%u_", 1234);
+	TEST("01234", "%05u", 1234);
+
+	TEST("_1234_", "_%d_", 1234);
+	TEST("_ 1234_", "_% d_", 1234);
+	TEST("_+1234_", "_%+d_", 1234);
+	TEST("_-1234_", "_%d_", -1234);
+	TEST("_-1234_", "_% d_", -1234);
+	TEST("_-1234_", "_%+d_", -1234);
+
+	/*
+	 * Morally, we should test these too, but 0-padded signed types are not
+	 * yet supported.
+	 *
+	 * TEST("01234", "%05", 1234);
+	 * TEST("-1234", "%05d", -1234);
+	 * TEST("-01234", "%06d", -1234);
+	*/
+
+	TEST("_-1234_", "_%d_", -1234);
+	TEST("_1234_", "_%d_", 1234);
+	TEST("_-1234_", "_%i_", -1234);
+	TEST("_1234_", "_%i_", 1234);
+	TEST("_01234_", "_%#o_", 01234);
+	TEST("_1234_", "_%u_", 1234);
+	TEST("_0x1234abc_", "_%#x_", 0x1234abc);
+	TEST("_0X1234ABC_", "_%#X_", 0x1234abc);
+	TEST("_c_", "_%c_", 'c');
+	TEST("_string_", "_%s_", "string");
+	TEST("_0x42_", "_%p_", ((void *)0x42));
+
+	TEST("_-1234_", "_%ld_", ((long)-1234));
+	TEST("_1234_", "_%ld_", ((long)1234));
+	TEST("_-1234_", "_%li_", ((long)-1234));
+	TEST("_1234_", "_%li_", ((long)1234));
+	TEST("_01234_", "_%#lo_", ((long)01234));
+	TEST("_1234_", "_%lu_", ((long)1234));
+	TEST("_0x1234abc_", "_%#lx_", ((long)0x1234abc));
+	TEST("_0X1234ABC_", "_%#lX_", ((long)0x1234ABC));
+
+	TEST("_-1234_", "_%lld_", ((long long)-1234));
+	TEST("_1234_", "_%lld_", ((long long)1234));
+	TEST("_-1234_", "_%lli_", ((long long)-1234));
+	TEST("_1234_", "_%lli_", ((long long)1234));
+	TEST("_01234_", "_%#llo_", ((long long)01234));
+	TEST("_1234_", "_%llu_", ((long long)1234));
+	TEST("_0x1234abc_", "_%#llx_", ((long long)0x1234abc));
+	TEST("_0X1234ABC_", "_%#llX_", ((long long)0x1234ABC));
+
+	TEST("_-1234_", "_%qd_", ((long long)-1234));
+	TEST("_1234_", "_%qd_", ((long long)1234));
+	TEST("_-1234_", "_%qi_", ((long long)-1234));
+	TEST("_1234_", "_%qi_", ((long long)1234));
+	TEST("_01234_", "_%#qo_", ((long long)01234));
+	TEST("_1234_", "_%qu_", ((long long)1234));
+	TEST("_0x1234abc_", "_%#qx_", ((long long)0x1234abc));
+	TEST("_0X1234ABC_", "_%#qX_", ((long long)0x1234ABC));
+
+	TEST("_-1234_", "_%jd_", ((intmax_t)-1234));
+	TEST("_1234_", "_%jd_", ((intmax_t)1234));
+	TEST("_-1234_", "_%ji_", ((intmax_t)-1234));
+	TEST("_1234_", "_%ji_", ((intmax_t)1234));
+	TEST("_01234_", "_%#jo_", ((intmax_t)01234));
+	TEST("_1234_", "_%ju_", ((intmax_t)1234));
+	TEST("_0x1234abc_", "_%#jx_", ((intmax_t)0x1234abc));
+	TEST("_0X1234ABC_", "_%#jX_", ((intmax_t)0x1234ABC));
+
+	TEST("_1234_", "_%td_", ((ptrdiff_t)1234));
+	TEST("_-1234_", "_%td_", ((ptrdiff_t)-1234));
+	TEST("_1234_", "_%ti_", ((ptrdiff_t)1234));
+	TEST("_-1234_", "_%ti_", ((ptrdiff_t)-1234));
+
+	TEST("_-1234_", "_%zd_", ((ssize_t)-1234));
+	TEST("_1234_", "_%zd_", ((ssize_t)1234));
+	TEST("_-1234_", "_%zi_", ((ssize_t)-1234));
+	TEST("_1234_", "_%zi_", ((ssize_t)1234));
+	TEST("_01234_", "_%#zo_", ((ssize_t)01234));
+	TEST("_1234_", "_%zu_", ((ssize_t)1234));
+	TEST("_0x1234abc_", "_%#zx_", ((ssize_t)0x1234abc));
+	TEST("_0X1234ABC_", "_%#zX_", ((ssize_t)0x1234ABC));
+#undef BUFLEN
+}
+TEST_END
+
+int
+main(void) {
+	return test(
+	    test_malloc_strtoumax_no_endptr,
+	    test_malloc_strtoumax,
+	    test_malloc_snprintf_truncated,
+	    test_malloc_snprintf);
+}
diff --git a/deps/jemalloc/test/unit/math.c b/deps/jemalloc/test/unit/math.c
new file mode 100644
index 0000000..a32767c
--- /dev/null
+++ b/deps/jemalloc/test/unit/math.c
@@ -0,0 +1,390 @@
+#include "test/jemalloc_test.h"
+
+#define MAX_REL_ERR 1.0e-9
+#define MAX_ABS_ERR 1.0e-9
+
+#include <float.h>
+
+#ifdef __PGI
+#undef INFINITY
+#endif
+
+#ifndef INFINITY
+#define INFINITY (DBL_MAX + DBL_MAX)
+#endif
+
+static bool
+double_eq_rel(double a, double b, double max_rel_err, double max_abs_err) {
+	double rel_err;
+
+	if (fabs(a - b) < max_abs_err) {
+		return true;
+	}
+	rel_err = (fabs(b) > fabs(a)) ? fabs((a-b)/b) : fabs((a-b)/a);
+	return (rel_err < max_rel_err);
+}
+
+static uint64_t
+factorial(unsigned x) {
+	uint64_t ret = 1;
+	unsigned i;
+
+	for (i = 2; i <= x; i++) {
+		ret *= (uint64_t)i;
+	}
+
+	return ret;
+}
+
+TEST_BEGIN(test_ln_gamma_factorial) {
+	unsigned x;
+
+	/* exp(ln_gamma(x)) == (x-1)! for integer x. */
+	for (x = 1; x <= 21; x++) {
+		expect_true(double_eq_rel(exp(ln_gamma(x)),
+		    (double)factorial(x-1), MAX_REL_ERR, MAX_ABS_ERR),
+		    "Incorrect factorial result for x=%u", x);
+	}
+}
+TEST_END
+
+/* Expected ln_gamma([0.0..100.0] increment=0.25). */
+static const double ln_gamma_misc_expected[] = {
+	INFINITY,
+	1.28802252469807743, 0.57236494292470008, 0.20328095143129538,
+	0.00000000000000000, -0.09827183642181320, -0.12078223763524518,
+	-0.08440112102048555, 0.00000000000000000, 0.12487171489239651,
+	0.28468287047291918, 0.47521466691493719, 0.69314718055994529,
+	0.93580193110872523, 1.20097360234707429, 1.48681557859341718,
+	1.79175946922805496, 2.11445692745037128, 2.45373657084244234,
+	2.80857141857573644, 3.17805383034794575, 3.56137591038669710,
+	3.95781396761871651, 4.36671603662228680, 4.78749174278204581,
+	5.21960398699022932, 5.66256205985714178, 6.11591589143154568,
+	6.57925121201010121, 7.05218545073853953, 7.53436423675873268,
+	8.02545839631598312, 8.52516136106541467, 9.03318691960512332,
+	9.54926725730099690, 10.07315123968123949, 10.60460290274525086,
+	11.14340011995171231, 11.68933342079726856, 12.24220494005076176,
+	12.80182748008146909, 13.36802367147604720, 13.94062521940376342,
+	14.51947222506051816, 15.10441257307551943, 15.69530137706046524,
+	16.29200047656724237, 16.89437797963419285, 17.50230784587389010,
+	18.11566950571089407, 18.73434751193644843, 19.35823122022435427,
+	19.98721449566188468, 20.62119544270163018, 21.26007615624470048,
+	21.90376249182879320, 22.55216385312342098, 23.20519299513386002,
+	23.86276584168908954, 24.52480131594137802, 25.19122118273868338,
+	25.86194990184851861, 26.53691449111561340, 27.21604439872720604,
+	27.89927138384089389, 28.58652940490193828, 29.27775451504081516,
+	29.97288476399884871, 30.67186010608067548, 31.37462231367769050,
+	32.08111489594735843, 32.79128302226991565, 33.50507345013689076,
+	34.22243445715505317, 34.94331577687681545, 35.66766853819134298,
+	36.39544520803305261, 37.12659953718355865, 37.86108650896109395,
+	38.59886229060776230, 39.33988418719949465, 40.08411059791735198,
+	40.83150097453079752, 41.58201578195490100, 42.33561646075348506,
+	43.09226539146988699, 43.85192586067515208, 44.61456202863158893,
+	45.38013889847690052, 46.14862228684032885, 46.91997879580877395,
+	47.69417578616628361, 48.47118135183522014, 49.25096429545256882,
+	50.03349410501914463, 50.81874093156324790, 51.60667556776436982,
+	52.39726942748592364, 53.19049452616926743, 53.98632346204390586,
+	54.78472939811231157, 55.58568604486942633, 56.38916764371992940,
+	57.19514895105859864, 58.00360522298051080, 58.81451220059079787,
+	59.62784609588432261, 60.44358357816834371, 61.26170176100199427,
+	62.08217818962842927, 62.90499082887649962, 63.73011805151035958,
+	64.55753862700632340, 65.38723171073768015, 66.21917683354901385,
+	67.05335389170279825, 67.88974313718154008, 68.72832516833013017,
+	69.56908092082363737, 70.41199165894616385, 71.25703896716800045,
+	72.10420474200799390, 72.95347118416940191, 73.80482079093779646,
+	74.65823634883015814, 75.51370092648485866, 76.37119786778275454,
+	77.23071078519033961, 78.09222355331530707, 78.95572030266725960,
+	79.82118541361435859, 80.68860351052903468, 81.55795945611502873,
+	82.42923834590904164, 83.30242550295004378, 84.17750647261028973,
+	85.05446701758152983, 85.93329311301090456, 86.81397094178107920,
+	87.69648688992882057, 88.58082754219766741, 89.46697967771913795,
+	90.35493026581838194, 91.24466646193963015, 92.13617560368709292,
+	93.02944520697742803, 93.92446296229978486, 94.82121673107967297,
+	95.71969454214321615, 96.61988458827809723, 97.52177522288820910,
+	98.42535495673848800, 99.33061245478741341, 100.23753653310367895,
+	101.14611615586458981, 102.05634043243354370, 102.96819861451382394,
+	103.88168009337621811, 104.79677439715833032, 105.71347118823287303,
+	106.63176026064346047, 107.55163153760463501, 108.47307506906540198,
+	109.39608102933323153, 110.32063971475740516, 111.24674154146920557,
+	112.17437704317786995, 113.10353686902013237, 114.03421178146170689,
+	114.96639265424990128, 115.90007047041454769, 116.83523632031698014,
+	117.77188139974506953, 118.70999700805310795, 119.64957454634490830,
+	120.59060551569974962, 121.53308151543865279, 122.47699424143097247,
+	123.42233548443955726, 124.36909712850338394, 125.31727114935689826,
+	126.26684961288492559, 127.21782467361175861, 128.17018857322420899,
+	129.12393363912724453, 130.07905228303084755, 131.03553699956862033,
+	131.99338036494577864, 132.95257503561629164, 133.91311374698926784,
+	134.87498931216194364, 135.83819462068046846, 136.80272263732638294,
+	137.76856640092901785, 138.73571902320256299, 139.70417368760718091,
+	140.67392364823425055, 141.64496222871400732, 142.61728282114600574,
+	143.59087888505104047, 144.56574394634486680, 145.54187159633210058,
+	146.51925549072063859, 147.49788934865566148, 148.47776695177302031,
+	149.45888214327129617, 150.44122882700193600, 151.42480096657754984,
+	152.40959258449737490, 153.39559776128982094, 154.38281063467164245,
+	155.37122539872302696, 156.36083630307879844, 157.35163765213474107,
+	158.34362380426921391, 159.33678917107920370, 160.33112821663092973,
+	161.32663545672428995, 162.32330545817117695, 163.32113283808695314,
+	164.32011226319519892, 165.32023844914485267, 166.32150615984036790,
+	167.32391020678358018, 168.32744544842768164, 169.33210678954270634,
+	170.33788918059275375, 171.34478761712384198, 172.35279713916281707,
+	173.36191283062726143, 174.37212981874515094, 175.38344327348534080,
+	176.39584840699734514, 177.40934047306160437, 178.42391476654847793,
+	179.43956662288721304, 180.45629141754378111, 181.47408456550741107,
+	182.49294152078630304, 183.51285777591152737, 184.53382886144947861,
+	185.55585034552262869, 186.57891783333786861, 187.60302696672312095,
+	188.62817342367162610, 189.65435291789341932, 190.68156119837468054,
+	191.70979404894376330, 192.73904728784492590, 193.76931676731820176,
+	194.80059837318714244, 195.83288802445184729, 196.86618167288995096,
+	197.90047530266301123, 198.93576492992946214, 199.97204660246373464,
+	201.00931639928148797, 202.04757043027063901, 203.08680483582807597,
+	204.12701578650228385, 205.16819948264117102, 206.21035215404597807,
+	207.25347005962987623, 208.29754948708190909, 209.34258675253678916,
+	210.38857820024875878, 211.43552020227099320, 212.48340915813977858,
+	213.53224149456323744, 214.58201366511514152, 215.63272214993284592,
+	216.68436345542014010, 217.73693411395422004, 218.79043068359703739,
+	219.84484974781133815, 220.90018791517996988, 221.95644181913033322,
+	223.01360811766215875, 224.07168349307951871, 225.13066465172661879,
+	226.19054832372759734, 227.25133126272962159, 228.31301024565024704,
+	229.37558207242807384, 230.43904356577689896, 231.50339157094342113,
+	232.56862295546847008, 233.63473460895144740, 234.70172344281823484,
+	235.76958639009222907, 236.83832040516844586, 237.90792246359117712,
+	238.97838956183431947, 240.04971871708477238, 241.12190696702904802,
+	242.19495136964280846, 243.26884900298270509, 244.34359696498191283,
+	245.41919237324782443, 246.49563236486270057, 247.57291409618682110,
+	248.65103474266476269, 249.72999149863338175, 250.80978157713354904,
+	251.89040220972316320, 252.97185064629374551, 254.05412415488834199,
+	255.13722002152300661, 256.22113555000953511, 257.30586806178126835,
+	258.39141489572085675, 259.47777340799029844, 260.56494097186322279,
+	261.65291497755913497, 262.74169283208021852, 263.83127195904967266,
+	264.92164979855277807, 266.01282380697938379, 267.10479145686849733,
+	268.19755023675537586, 269.29109765101975427, 270.38543121973674488,
+	271.48054847852881721, 272.57644697842033565, 273.67312428569374561,
+	274.77057798174683967, 275.86880566295326389, 276.96780494052313770,
+	278.06757344036617496, 279.16810880295668085, 280.26940868320008349,
+	281.37147075030043197, 282.47429268763045229, 283.57787219260217171,
+	284.68220697654078322, 285.78729476455760050, 286.89313329542699194,
+	287.99972032146268930, 289.10705360839756395, 290.21513093526289140,
+	291.32395009427028754, 292.43350889069523646, 293.54380514276073200,
+	294.65483668152336350, 295.76660135076059532, 296.87909700685889902,
+	297.99232151870342022, 299.10627276756946458, 300.22094864701409733,
+	301.33634706277030091, 302.45246593264130297, 303.56930318639643929,
+	304.68685676566872189, 305.80512462385280514, 306.92410472600477078,
+	308.04379504874236773, 309.16419358014690033, 310.28529831966631036,
+	311.40710727801865687, 312.52961847709792664, 313.65282994987899201,
+	314.77673974032603610, 315.90134590329950015, 317.02664650446632777,
+	318.15263962020929966, 319.27932333753892635, 320.40669575400545455,
+	321.53475497761127144, 322.66349912672620803, 323.79292633000159185,
+	324.92303472628691452, 326.05382246454587403, 327.18528770377525916,
+	328.31742861292224234, 329.45024337080525356, 330.58373016603343331,
+	331.71788719692847280, 332.85271267144611329, 333.98820480709991898,
+	335.12436183088397001, 336.26118197919845443, 337.39866349777429377,
+	338.53680464159958774, 339.67560367484657036, 340.81505887079896411,
+	341.95516851178109619, 343.09593088908627578, 344.23734430290727460,
+	345.37940706226686416, 346.52211748494903532, 347.66547389743118401,
+	348.80947463481720661, 349.95411804077025408, 351.09940246744753267,
+	352.24532627543504759, 353.39188783368263103, 354.53908551944078908,
+	355.68691771819692349, 356.83538282361303118, 357.98447923746385868,
+	359.13420536957539753
+};
+
+TEST_BEGIN(test_ln_gamma_misc) {
+	unsigned i;
+
+	for (i = 1; i < sizeof(ln_gamma_misc_expected)/sizeof(double); i++) {
+		double x = (double)i * 0.25;
+		expect_true(double_eq_rel(ln_gamma(x),
+		    ln_gamma_misc_expected[i], MAX_REL_ERR, MAX_ABS_ERR),
+		    "Incorrect ln_gamma result for i=%u", i);
+	}
+}
+TEST_END
+
+/* Expected pt_norm([0.01..0.99] increment=0.01). */
+static const double pt_norm_expected[] = {
+	-INFINITY,
+	-2.32634787404084076, -2.05374891063182252, -1.88079360815125085,
+	-1.75068607125216946, -1.64485362695147264, -1.55477359459685305,
+	-1.47579102817917063, -1.40507156030963221, -1.34075503369021654,
+	-1.28155156554460081, -1.22652812003661049, -1.17498679206608991,
+	-1.12639112903880045, -1.08031934081495606, -1.03643338949378938,
+	-0.99445788320975281, -0.95416525314619416, -0.91536508784281390,
+	-0.87789629505122846, -0.84162123357291418, -0.80642124701824025,
+	-0.77219321418868492, -0.73884684918521371, -0.70630256284008752,
+	-0.67448975019608171, -0.64334540539291685, -0.61281299101662701,
+	-0.58284150727121620, -0.55338471955567281, -0.52440051270804067,
+	-0.49585034734745320, -0.46769879911450812, -0.43991316567323380,
+	-0.41246312944140462, -0.38532046640756751, -0.35845879325119373,
+	-0.33185334643681652, -0.30548078809939738, -0.27931903444745404,
+	-0.25334710313579978, -0.22754497664114931, -0.20189347914185077,
+	-0.17637416478086135, -0.15096921549677725, -0.12566134685507399,
+	-0.10043372051146975, -0.07526986209982976, -0.05015358346473352,
+	-0.02506890825871106, 0.00000000000000000, 0.02506890825871106,
+	0.05015358346473366, 0.07526986209982990, 0.10043372051146990,
+	0.12566134685507413, 0.15096921549677739, 0.17637416478086146,
+	0.20189347914185105, 0.22754497664114931, 0.25334710313579978,
+	0.27931903444745404, 0.30548078809939738, 0.33185334643681652,
+	0.35845879325119373, 0.38532046640756762, 0.41246312944140484,
+	0.43991316567323391, 0.46769879911450835, 0.49585034734745348,
+	0.52440051270804111, 0.55338471955567303, 0.58284150727121620,
+	0.61281299101662701, 0.64334540539291685, 0.67448975019608171,
+	0.70630256284008752, 0.73884684918521371, 0.77219321418868492,
+	0.80642124701824036, 0.84162123357291441, 0.87789629505122879,
+	0.91536508784281423, 0.95416525314619460, 0.99445788320975348,
+	1.03643338949378938, 1.08031934081495606, 1.12639112903880045,
+	1.17498679206608991, 1.22652812003661049, 1.28155156554460081,
+	1.34075503369021654, 1.40507156030963265, 1.47579102817917085,
+	1.55477359459685394, 1.64485362695147308, 1.75068607125217102,
+	1.88079360815125041, 2.05374891063182208, 2.32634787404084076
+};
+
+TEST_BEGIN(test_pt_norm) {
+	unsigned i;
+
+	for (i = 1; i < sizeof(pt_norm_expected)/sizeof(double); i++) {
+		double p = (double)i * 0.01;
+		expect_true(double_eq_rel(pt_norm(p), pt_norm_expected[i],
+		    MAX_REL_ERR, MAX_ABS_ERR),
+		    "Incorrect pt_norm result for i=%u", i);
+	}
+}
+TEST_END
+
+/*
+ * Expected pt_chi2(p=[0.01..0.99] increment=0.07,
+ *                  df={0.1, 1.1, 10.1, 100.1, 1000.1}).
+ */
+static const double pt_chi2_df[] = {0.1, 1.1, 10.1, 100.1, 1000.1};
+static const double pt_chi2_expected[] = {
+	1.168926411457320e-40, 1.347680397072034e-22, 3.886980416666260e-17,
+	8.245951724356564e-14, 2.068936347497604e-11, 1.562561743309233e-09,
+	5.459543043426564e-08, 1.114775688149252e-06, 1.532101202364371e-05,
+	1.553884683726585e-04, 1.239396954915939e-03, 8.153872320255721e-03,
+	4.631183739647523e-02, 2.473187311701327e-01, 2.175254800183617e+00,
+
+	0.0003729887888876379, 0.0164409238228929513, 0.0521523015190650113,
+	0.1064701372271216612, 0.1800913735793082115, 0.2748704281195626931,
+	0.3939246282787986497, 0.5420727552260817816, 0.7267265822221973259,
+	0.9596554296000253670, 1.2607440376386165326, 1.6671185084541604304,
+	2.2604828984738705167, 3.2868613342148607082, 6.9298574921692139839,
+
+	2.606673548632508, 4.602913725294877, 5.646152813924212,
+	6.488971315540869, 7.249823275816285, 7.977314231410841,
+	8.700354939944047, 9.441728024225892, 10.224338321374127,
+	11.076435368801061, 12.039320937038386, 13.183878752697167,
+	14.657791935084575, 16.885728216339373, 23.361991680031817,
+
+	70.14844087392152, 80.92379498849355, 85.53325420085891,
+	88.94433120715347, 91.83732712857017, 94.46719943606301,
+	96.96896479994635, 99.43412843510363, 101.94074719829733,
+	104.57228644307247, 107.43900093448734, 110.71844673417287,
+	114.76616819871325, 120.57422505959563, 135.92318818757556,
+
+	899.0072447849649, 937.9271278858220, 953.8117189560207,
+	965.3079371501154, 974.8974061207954, 983.4936235182347,
+	991.5691170518946, 999.4334123954690, 1007.3391826856553,
+	1015.5445154999951, 1024.3777075619569, 1034.3538789836223,
+	1046.4872561869577, 1063.5717461999654, 1107.0741966053859
+};
+
+TEST_BEGIN(test_pt_chi2) {
+	unsigned i, j;
+	unsigned e = 0;
+
+	for (i = 0; i < sizeof(pt_chi2_df)/sizeof(double); i++) {
+		double df = pt_chi2_df[i];
+		double ln_gamma_df = ln_gamma(df * 0.5);
+		for (j = 1; j < 100; j += 7) {
+			double p = (double)j * 0.01;
+			expect_true(double_eq_rel(pt_chi2(p, df, ln_gamma_df),
+			    pt_chi2_expected[e], MAX_REL_ERR, MAX_ABS_ERR),
+			    "Incorrect pt_chi2 result for i=%u, j=%u", i, j);
+			e++;
+		}
+	}
+}
+TEST_END
+
+/*
+ * Expected pt_gamma(p=[0.1..0.99] increment=0.07,
+ *                   shape=[0.5..3.0] increment=0.5).
+ */
+static const double pt_gamma_shape[] = {0.5, 1.0, 1.5, 2.0, 2.5, 3.0};
+static const double pt_gamma_expected[] = {
+	7.854392895485103e-05, 5.043466107888016e-03, 1.788288957794883e-02,
+	3.900956150232906e-02, 6.913847560638034e-02, 1.093710833465766e-01,
+	1.613412523825817e-01, 2.274682115597864e-01, 3.114117323127083e-01,
+	4.189466220207417e-01, 5.598106789059246e-01, 7.521856146202706e-01,
+	1.036125427911119e+00, 1.532450860038180e+00, 3.317448300510606e+00,
+
+	0.01005033585350144, 0.08338160893905107, 0.16251892949777497,
+	0.24846135929849966, 0.34249030894677596, 0.44628710262841947,
+	0.56211891815354142, 0.69314718055994529, 0.84397007029452920,
+	1.02165124753198167, 1.23787435600161766, 1.51412773262977574,
+	1.89711998488588196, 2.52572864430825783, 4.60517018598809091,
+
+	0.05741590094955853, 0.24747378084860744, 0.39888572212236084,
+	0.54394139997444901, 0.69048812513915159, 0.84311389861296104,
+	1.00580622221479898, 1.18298694218766931, 1.38038096305861213,
+	1.60627736383027453, 1.87396970522337947, 2.20749220408081070,
+	2.65852391865854942, 3.37934630984842244, 5.67243336507218476,
+
+	0.1485547402532659, 0.4657458011640391, 0.6832386130709406,
+	0.8794297834672100, 1.0700752852474524, 1.2629614217350744,
+	1.4638400448580779, 1.6783469900166610, 1.9132338090606940,
+	2.1778589228618777, 2.4868823970010991, 2.8664695666264195,
+	3.3724415436062114, 4.1682658512758071, 6.6383520679938108,
+
+	0.2771490383641385, 0.7195001279643727, 0.9969081732265243,
+	1.2383497880608061, 1.4675206597269927, 1.6953064251816552,
+	1.9291243435606809, 2.1757300955477641, 2.4428032131216391,
+	2.7406534569230616, 3.0851445039665513, 3.5043101122033367,
+	4.0575997065264637, 4.9182956424675286, 7.5431362346944937,
+
+	0.4360451650782932, 0.9983600902486267, 1.3306365880734528,
+	1.6129750834753802, 1.8767241606994294, 2.1357032436097660,
+	2.3988853336865565, 2.6740603137235603, 2.9697561737517959,
+	3.2971457713883265, 3.6731795898504660, 4.1275751617770631,
+	4.7230515633946677, 5.6417477865306020, 8.4059469148854635
+};
+
+TEST_BEGIN(test_pt_gamma_shape) {
+	unsigned i, j;
+	unsigned e = 0;
+
+	for (i = 0; i < sizeof(pt_gamma_shape)/sizeof(double); i++) {
+		double shape = pt_gamma_shape[i];
+		double ln_gamma_shape = ln_gamma(shape);
+		for (j = 1; j < 100; j += 7) {
+			double p = (double)j * 0.01;
+			expect_true(double_eq_rel(pt_gamma(p, shape, 1.0,
+			    ln_gamma_shape), pt_gamma_expected[e], MAX_REL_ERR,
+			    MAX_ABS_ERR),
+			    "Incorrect pt_gamma result for i=%u, j=%u", i, j);
+			e++;
+		}
+	}
+}
+TEST_END
+
+TEST_BEGIN(test_pt_gamma_scale) {
+	double shape = 1.0;
+	double ln_gamma_shape = ln_gamma(shape);
+
+	expect_true(double_eq_rel(
+	    pt_gamma(0.5, shape, 1.0, ln_gamma_shape) * 10.0,
+	    pt_gamma(0.5, shape, 10.0, ln_gamma_shape), MAX_REL_ERR,
+	    MAX_ABS_ERR),
+	    "Scale should be trivially equivalent to external multiplication");
+}
+TEST_END
+
+int
+main(void) {
+	return test(
+	    test_ln_gamma_factorial,
+	    test_ln_gamma_misc,
+	    test_pt_norm,
+	    test_pt_chi2,
+	    test_pt_gamma_shape,
+	    test_pt_gamma_scale);
+}
diff --git a/deps/jemalloc/test/unit/mpsc_queue.c b/deps/jemalloc/test/unit/mpsc_queue.c
new file mode 100644
index 0000000..895edf8
--- /dev/null
+++ b/deps/jemalloc/test/unit/mpsc_queue.c
@@ -0,0 +1,304 @@
+#include "test/jemalloc_test.h"
+
+#include "jemalloc/internal/mpsc_queue.h"
+
+typedef struct elem_s elem_t;
+typedef ql_head(elem_t) elem_list_t;
+typedef mpsc_queue(elem_t) elem_mpsc_queue_t;
+struct elem_s {
+	int thread;
+	int idx;
+	ql_elm(elem_t) link;
+};
+
+/* Include both proto and gen to make sure they match up. */
+mpsc_queue_proto(static, elem_mpsc_queue_, elem_mpsc_queue_t, elem_t,
+    elem_list_t);
+mpsc_queue_gen(static, elem_mpsc_queue_, elem_mpsc_queue_t, elem_t,
+    elem_list_t, link);
+
+static void
+init_elems_simple(elem_t *elems, int nelems, int thread) {
+	for (int i = 0; i < nelems; i++) {
+		elems[i].thread = thread;
+		elems[i].idx = i;
+		ql_elm_new(&elems[i], link);
+	}
+}
+
+static void
+check_elems_simple(elem_list_t *list, int nelems, int thread) {
+	elem_t *elem;
+	int next_idx = 0;
+	ql_foreach(elem, list, link) {
+		expect_d_lt(next_idx, nelems, "Too many list items");
+		expect_d_eq(thread, elem->thread, "");
+		expect_d_eq(next_idx, elem->idx, "List out of order");
+		next_idx++;
+	}
+}
+
+TEST_BEGIN(test_simple) {
+	enum {NELEMS = 10};
+	elem_t elems[NELEMS];
+	elem_list_t list;
+	elem_mpsc_queue_t queue;
+
+	/* Pop empty queue onto empty list -> empty list */
+	ql_new(&list);
+	elem_mpsc_queue_new(&queue);
+	elem_mpsc_queue_pop_batch(&queue, &list);
+	expect_true(ql_empty(&list), "");
+
+	/* Pop empty queue onto nonempty list -> list unchanged */
+	ql_new(&list);
+	elem_mpsc_queue_new(&queue);
+	init_elems_simple(elems, NELEMS, 0);
+	for (int i = 0; i < NELEMS; i++) {
+		ql_tail_insert(&list, &elems[i], link);
+	}
+	elem_mpsc_queue_pop_batch(&queue, &list);
+	check_elems_simple(&list, NELEMS, 0);
+
+	/* Pop nonempty queue onto empty list -> list takes queue contents */
+	ql_new(&list);
+	elem_mpsc_queue_new(&queue);
+	init_elems_simple(elems, NELEMS, 0);
+	for (int i = 0; i < NELEMS; i++) {
+		elem_mpsc_queue_push(&queue, &elems[i]);
+	}
+	elem_mpsc_queue_pop_batch(&queue, &list);
+	check_elems_simple(&list, NELEMS, 0);
+
+	/* Pop nonempty queue onto nonempty list -> list gains queue contents */
+	ql_new(&list);
+	elem_mpsc_queue_new(&queue);
+	init_elems_simple(elems, NELEMS, 0);
+	for (int i = 0; i < NELEMS / 2; i++) {
+		ql_tail_insert(&list, &elems[i], link);
+	}
+	for (int i = NELEMS / 2; i < NELEMS; i++) {
+		elem_mpsc_queue_push(&queue, &elems[i]);
+	}
+	elem_mpsc_queue_pop_batch(&queue, &list);
+	check_elems_simple(&list, NELEMS, 0);
+
+}
+TEST_END
+
+TEST_BEGIN(test_push_single_or_batch) {
+	enum {
+		BATCH_MAX = 10,
+		/*
+		 * We'll push i items one-at-a-time, then i items as a batch,
+		 * then i items as a batch again, as i ranges from 1 to
+		 * BATCH_MAX.  So we need 3 times the sum of the numbers from 1
+		 * to BATCH_MAX elements total.
+		 */
+		NELEMS = 3 * BATCH_MAX * (BATCH_MAX - 1) / 2
+	};
+	elem_t elems[NELEMS];
+	init_elems_simple(elems, NELEMS, 0);
+	elem_list_t list;
+	ql_new(&list);
+	elem_mpsc_queue_t queue;
+	elem_mpsc_queue_new(&queue);
+	int next_idx = 0;
+	for (int i = 1; i < 10; i++) {
+		/* Push i items 1 at a time. */
+		for (int j = 0; j < i; j++) {
+			elem_mpsc_queue_push(&queue, &elems[next_idx]);
+			next_idx++;
+		}
+		/* Push i items in batch. */
+		for (int j = 0; j < i; j++) {
+			ql_tail_insert(&list, &elems[next_idx], link);
+			next_idx++;
+		}
+		elem_mpsc_queue_push_batch(&queue, &list);
+		expect_true(ql_empty(&list), "Batch push should empty source");
+		/*
+		 * Push i items in batch, again.  This tests two batches
+		 * proceeding one after the other.
+		 */
+		for (int j = 0; j < i; j++) {
+			ql_tail_insert(&list, &elems[next_idx], link);
+			next_idx++;
+		}
+		elem_mpsc_queue_push_batch(&queue, &list);
+		expect_true(ql_empty(&list), "Batch push should empty source");
+	}
+	expect_d_eq(NELEMS, next_idx, "Miscomputed number of elems to push.");
+
+	expect_true(ql_empty(&list), "");
+	elem_mpsc_queue_pop_batch(&queue, &list);
+	check_elems_simple(&list, NELEMS, 0);
+}
+TEST_END
+
+TEST_BEGIN(test_multi_op) {
+	enum {NELEMS = 20};
+	elem_t elems[NELEMS];
+	init_elems_simple(elems, NELEMS, 0);
+	elem_list_t push_list;
+	ql_new(&push_list);
+	elem_list_t result_list;
+	ql_new(&result_list);
+	elem_mpsc_queue_t queue;
+	elem_mpsc_queue_new(&queue);
+
+	int next_idx = 0;
+	/* Push first quarter 1-at-a-time. */
+	for (int i = 0; i < NELEMS / 4; i++) {
+		elem_mpsc_queue_push(&queue, &elems[next_idx]);
+		next_idx++;
+	}
+	/* Push second quarter in batch. */
+	for (int i = NELEMS / 4; i < NELEMS / 2; i++) {
+		ql_tail_insert(&push_list, &elems[next_idx], link);
+		next_idx++;
+	}
+	elem_mpsc_queue_push_batch(&queue, &push_list);
+	/* Batch pop all pushed elements. */
+	elem_mpsc_queue_pop_batch(&queue, &result_list);
+	/* Push third quarter in batch. */
+	for (int i = NELEMS / 2; i < 3 * NELEMS / 4; i++) {
+		ql_tail_insert(&push_list, &elems[next_idx], link);
+		next_idx++;
+	}
+	elem_mpsc_queue_push_batch(&queue, &push_list);
+	/* Push last quarter one-at-a-time. */
+	for (int i = 3 * NELEMS / 4; i < NELEMS; i++) {
+		elem_mpsc_queue_push(&queue, &elems[next_idx]);
+		next_idx++;
+	}
+	/* Pop them again.  Order of existing list should be preserved. */
+	elem_mpsc_queue_pop_batch(&queue, &result_list);
+
+	check_elems_simple(&result_list, NELEMS, 0);
+
+}
+TEST_END
+
+typedef struct pusher_arg_s pusher_arg_t;
+struct pusher_arg_s {
+	elem_mpsc_queue_t *queue;
+	int thread;
+	elem_t *elems;
+	int nelems;
+};
+
+typedef struct popper_arg_s popper_arg_t;
+struct popper_arg_s {
+	elem_mpsc_queue_t *queue;
+	int npushers;
+	int nelems_per_pusher;
+	int *pusher_counts;
+};
+
+static void *
+thd_pusher(void *void_arg) {
+	pusher_arg_t *arg = (pusher_arg_t *)void_arg;
+	int next_idx = 0;
+	while (next_idx < arg->nelems) {
+		/* Push 10 items in batch. */
+		elem_list_t list;
+		ql_new(&list);
+		int limit = next_idx + 10;
+		while (next_idx < arg->nelems && next_idx < limit) {
+			ql_tail_insert(&list, &arg->elems[next_idx], link);
+			next_idx++;
+		}
+		elem_mpsc_queue_push_batch(arg->queue, &list);
+		/* Push 10 items one-at-a-time. */
+		limit = next_idx + 10;
+		while (next_idx < arg->nelems && next_idx < limit) {
+			elem_mpsc_queue_push(arg->queue, &arg->elems[next_idx]);
+			next_idx++;
+		}
+
+	}
+	return NULL;
+}
+
+static void *
+thd_popper(void *void_arg) {
+	popper_arg_t *arg = (popper_arg_t *)void_arg;
+	int done_pushers = 0;
+	while (done_pushers < arg->npushers) {
+		elem_list_t list;
+		ql_new(&list);
+		elem_mpsc_queue_pop_batch(arg->queue, &list);
+		elem_t *elem;
+		ql_foreach(elem, &list, link) {
+			int thread = elem->thread;
+			int idx = elem->idx;
+			expect_d_eq(arg->pusher_counts[thread], idx,
+			    "Thread's pushes reordered");
+			arg->pusher_counts[thread]++;
+			if (arg->pusher_counts[thread]
+			    == arg->nelems_per_pusher) {
+				done_pushers++;
+			}
+		}
+	}
+	return NULL;
+}
+
+TEST_BEGIN(test_multiple_threads) {
+	enum {
+		NPUSHERS = 4,
+		NELEMS_PER_PUSHER = 1000*1000,
+	};
+	thd_t pushers[NPUSHERS];
+	pusher_arg_t pusher_arg[NPUSHERS];
+
+	thd_t popper;
+	popper_arg_t popper_arg;
+
+	elem_mpsc_queue_t queue;
+	elem_mpsc_queue_new(&queue);
+
+	elem_t *elems = calloc(NPUSHERS * NELEMS_PER_PUSHER, sizeof(elem_t));
+	elem_t *elem_iter = elems;
+	for (int i = 0; i < NPUSHERS; i++) {
+		pusher_arg[i].queue = &queue;
+		pusher_arg[i].thread = i;
+		pusher_arg[i].elems = elem_iter;
+		pusher_arg[i].nelems = NELEMS_PER_PUSHER;
+
+		init_elems_simple(elem_iter, NELEMS_PER_PUSHER, i);
+		elem_iter += NELEMS_PER_PUSHER;
+	}
+	popper_arg.queue = &queue;
+	popper_arg.npushers = NPUSHERS;
+	popper_arg.nelems_per_pusher = NELEMS_PER_PUSHER;
+	int pusher_counts[NPUSHERS] = {0};
+	popper_arg.pusher_counts = pusher_counts;
+
+	thd_create(&popper, thd_popper, (void *)&popper_arg);
+	for (int i = 0; i < NPUSHERS; i++) {
+		thd_create(&pushers[i], thd_pusher, &pusher_arg[i]);
+	}
+
+	thd_join(popper, NULL);
+	for (int i = 0; i < NPUSHERS; i++) {
+		thd_join(pushers[i], NULL);
+	}
+
+	for (int i = 0; i < NPUSHERS; i++) {
+		expect_d_eq(NELEMS_PER_PUSHER, pusher_counts[i], "");
+	}
+
+	free(elems);
+}
+TEST_END
+
+int
+main(void) {
+	return test_no_reentrancy(
+	    test_simple,
+	    test_push_single_or_batch,
+	    test_multi_op,
+	    test_multiple_threads);
+}
diff --git a/deps/jemalloc/test/unit/mq.c b/deps/jemalloc/test/unit/mq.c
new file mode 100644
index 0000000..f833f77
--- /dev/null
+++ b/deps/jemalloc/test/unit/mq.c
@@ -0,0 +1,89 @@
+#include "test/jemalloc_test.h"
+
+#define NSENDERS	3
+#define NMSGS		100000
+
+typedef struct mq_msg_s mq_msg_t;
+struct mq_msg_s {
+	mq_msg(mq_msg_t)	link;
+};
+mq_gen(static, mq_, mq_t, mq_msg_t, link)
+
+TEST_BEGIN(test_mq_basic) {
+	mq_t mq;
+	mq_msg_t msg;
+
+	expect_false(mq_init(&mq), "Unexpected mq_init() failure");
+	expect_u_eq(mq_count(&mq), 0, "mq should be empty");
+	expect_ptr_null(mq_tryget(&mq),
+	    "mq_tryget() should fail when the queue is empty");
+
+	mq_put(&mq, &msg);
+	expect_u_eq(mq_count(&mq), 1, "mq should contain one message");
+	expect_ptr_eq(mq_tryget(&mq), &msg, "mq_tryget() should return msg");
+
+	mq_put(&mq, &msg);
+	expect_ptr_eq(mq_get(&mq), &msg, "mq_get() should return msg");
+
+	mq_fini(&mq);
+}
+TEST_END
+
+static void *
+thd_receiver_start(void *arg) {
+	mq_t *mq = (mq_t *)arg;
+	unsigned i;
+
+	for (i = 0; i < (NSENDERS * NMSGS); i++) {
+		mq_msg_t *msg = mq_get(mq);
+		expect_ptr_not_null(msg, "mq_get() should never return NULL");
+		dallocx(msg, 0);
+	}
+	return NULL;
+}
+
+static void *
+thd_sender_start(void *arg) {
+	mq_t *mq = (mq_t *)arg;
+	unsigned i;
+
+	for (i = 0; i < NMSGS; i++) {
+		mq_msg_t *msg;
+		void *p;
+		p = mallocx(sizeof(mq_msg_t), 0);
+		expect_ptr_not_null(p, "Unexpected mallocx() failure");
+		msg = (mq_msg_t *)p;
+		mq_put(mq, msg);
+	}
+	return NULL;
+}
+
+TEST_BEGIN(test_mq_threaded) {
+	mq_t mq;
+	thd_t receiver;
+	thd_t senders[NSENDERS];
+	unsigned i;
+
+	expect_false(mq_init(&mq), "Unexpected mq_init() failure");
+
+	thd_create(&receiver, thd_receiver_start, (void *)&mq);
+	for (i = 0; i < NSENDERS; i++) {
+		thd_create(&senders[i], thd_sender_start, (void *)&mq);
+	}
+
+	thd_join(receiver, NULL);
+	for (i = 0; i < NSENDERS; i++) {
+		thd_join(senders[i], NULL);
+	}
+
+	mq_fini(&mq);
+}
+TEST_END
+
+int
+main(void) {
+	return test(
+	    test_mq_basic,
+	    test_mq_threaded);
+}
+
diff --git a/deps/jemalloc/test/unit/mtx.c b/deps/jemalloc/test/unit/mtx.c
new file mode 100644
index 0000000..4aeebc1
--- /dev/null
+++ b/deps/jemalloc/test/unit/mtx.c
@@ -0,0 +1,57 @@
+#include "test/jemalloc_test.h"
+
+#define NTHREADS	2
+#define NINCRS		2000000
+
+TEST_BEGIN(test_mtx_basic) {
+	mtx_t mtx;
+
+	expect_false(mtx_init(&mtx), "Unexpected mtx_init() failure");
+	mtx_lock(&mtx);
+	mtx_unlock(&mtx);
+	mtx_fini(&mtx);
+}
+TEST_END
+
+typedef struct {
+	mtx_t		mtx;
+	unsigned	x;
+} thd_start_arg_t;
+
+static void *
+thd_start(void *varg) {
+	thd_start_arg_t *arg = (thd_start_arg_t *)varg;
+	unsigned i;
+
+	for (i = 0; i < NINCRS; i++) {
+		mtx_lock(&arg->mtx);
+		arg->x++;
+		mtx_unlock(&arg->mtx);
+	}
+	return NULL;
+}
+
+TEST_BEGIN(test_mtx_race) {
+	thd_start_arg_t arg;
+	thd_t thds[NTHREADS];
+	unsigned i;
+
+	expect_false(mtx_init(&arg.mtx), "Unexpected mtx_init() failure");
+	arg.x = 0;
+	for (i = 0; i < NTHREADS; i++) {
+		thd_create(&thds[i], thd_start, (void *)&arg);
+	}
+	for (i = 0; i < NTHREADS; i++) {
+		thd_join(thds[i], NULL);
+	}
+	expect_u_eq(arg.x, NTHREADS * NINCRS,
+	    "Race-related counter corruption");
+}
+TEST_END
+
+int
+main(void) {
+	return test(
+	    test_mtx_basic,
+	    test_mtx_race);
+}
diff --git a/deps/jemalloc/test/unit/nstime.c b/deps/jemalloc/test/unit/nstime.c
new file mode 100644
index 0000000..56238ab
--- /dev/null
+++ b/deps/jemalloc/test/unit/nstime.c
@@ -0,0 +1,252 @@
+#include "test/jemalloc_test.h"
+
+#define BILLION	UINT64_C(1000000000)
+
+TEST_BEGIN(test_nstime_init) {
+	nstime_t nst;
+
+	nstime_init(&nst, 42000000043);
+	expect_u64_eq(nstime_ns(&nst), 42000000043, "ns incorrectly read");
+	expect_u64_eq(nstime_sec(&nst), 42, "sec incorrectly read");
+	expect_u64_eq(nstime_nsec(&nst), 43, "nsec incorrectly read");
+}
+TEST_END
+
+TEST_BEGIN(test_nstime_init2) {
+	nstime_t nst;
+
+	nstime_init2(&nst, 42, 43);
+	expect_u64_eq(nstime_sec(&nst), 42, "sec incorrectly read");
+	expect_u64_eq(nstime_nsec(&nst), 43, "nsec incorrectly read");
+}
+TEST_END
+
+TEST_BEGIN(test_nstime_copy) {
+	nstime_t nsta, nstb;
+
+	nstime_init2(&nsta, 42, 43);
+	nstime_init_zero(&nstb);
+	nstime_copy(&nstb, &nsta);
+	expect_u64_eq(nstime_sec(&nstb), 42, "sec incorrectly copied");
+	expect_u64_eq(nstime_nsec(&nstb), 43, "nsec incorrectly copied");
+}
+TEST_END
+
+TEST_BEGIN(test_nstime_compare) {
+	nstime_t nsta, nstb;
+
+	nstime_init2(&nsta, 42, 43);
+	nstime_copy(&nstb, &nsta);
+	expect_d_eq(nstime_compare(&nsta, &nstb), 0, "Times should be equal");
+	expect_d_eq(nstime_compare(&nstb, &nsta), 0, "Times should be equal");
+
+	nstime_init2(&nstb, 42, 42);
+	expect_d_eq(nstime_compare(&nsta, &nstb), 1,
+	    "nsta should be greater than nstb");
+	expect_d_eq(nstime_compare(&nstb, &nsta), -1,
+	    "nstb should be less than nsta");
+
+	nstime_init2(&nstb, 42, 44);
+	expect_d_eq(nstime_compare(&nsta, &nstb), -1,
+	    "nsta should be less than nstb");
+	expect_d_eq(nstime_compare(&nstb, &nsta), 1,
+	    "nstb should be greater than nsta");
+
+	nstime_init2(&nstb, 41, BILLION - 1);
+	expect_d_eq(nstime_compare(&nsta, &nstb), 1,
+	    "nsta should be greater than nstb");
+	expect_d_eq(nstime_compare(&nstb, &nsta), -1,
+	    "nstb should be less than nsta");
+
+	nstime_init2(&nstb, 43, 0);
+	expect_d_eq(nstime_compare(&nsta, &nstb), -1,
+	    "nsta should be less than nstb");
+	expect_d_eq(nstime_compare(&nstb, &nsta), 1,
+	    "nstb should be greater than nsta");
+}
+TEST_END
+
+TEST_BEGIN(test_nstime_add) {
+	nstime_t nsta, nstb;
+
+	nstime_init2(&nsta, 42, 43);
+	nstime_copy(&nstb, &nsta);
+	nstime_add(&nsta, &nstb);
+	nstime_init2(&nstb, 84, 86);
+	expect_d_eq(nstime_compare(&nsta, &nstb), 0,
+	    "Incorrect addition result");
+
+	nstime_init2(&nsta, 42, BILLION - 1);
+	nstime_copy(&nstb, &nsta);
+	nstime_add(&nsta, &nstb);
+	nstime_init2(&nstb, 85, BILLION - 2);
+	expect_d_eq(nstime_compare(&nsta, &nstb), 0,
+	    "Incorrect addition result");
+}
+TEST_END
+
+TEST_BEGIN(test_nstime_iadd) {
+	nstime_t nsta, nstb;
+
+	nstime_init2(&nsta, 42, BILLION - 1);
+	nstime_iadd(&nsta, 1);
+	nstime_init2(&nstb, 43, 0);
+	expect_d_eq(nstime_compare(&nsta, &nstb), 0,
+	    "Incorrect addition result");
+
+	nstime_init2(&nsta, 42, 1);
+	nstime_iadd(&nsta, BILLION + 1);
+	nstime_init2(&nstb, 43, 2);
+	expect_d_eq(nstime_compare(&nsta, &nstb), 0,
+	    "Incorrect addition result");
+}
+TEST_END
+
+TEST_BEGIN(test_nstime_subtract) {
+	nstime_t nsta, nstb;
+
+	nstime_init2(&nsta, 42, 43);
+	nstime_copy(&nstb, &nsta);
+	nstime_subtract(&nsta, &nstb);
+	nstime_init_zero(&nstb);
+	expect_d_eq(nstime_compare(&nsta, &nstb), 0,
+	    "Incorrect subtraction result");
+
+	nstime_init2(&nsta, 42, 43);
+	nstime_init2(&nstb, 41, 44);
+	nstime_subtract(&nsta, &nstb);
+	nstime_init2(&nstb, 0, BILLION - 1);
+	expect_d_eq(nstime_compare(&nsta, &nstb), 0,
+	    "Incorrect subtraction result");
+}
+TEST_END
+
+TEST_BEGIN(test_nstime_isubtract) {
+	nstime_t nsta, nstb;
+
+	nstime_init2(&nsta, 42, 43);
+	nstime_isubtract(&nsta, 42*BILLION + 43);
+	nstime_init_zero(&nstb);
+	expect_d_eq(nstime_compare(&nsta, &nstb), 0,
+	    "Incorrect subtraction result");
+
+	nstime_init2(&nsta, 42, 43);
+	nstime_isubtract(&nsta, 41*BILLION + 44);
+	nstime_init2(&nstb, 0, BILLION - 1);
+	expect_d_eq(nstime_compare(&nsta, &nstb), 0,
+	    "Incorrect subtraction result");
+}
+TEST_END
+
+TEST_BEGIN(test_nstime_imultiply) {
+	nstime_t nsta, nstb;
+
+	nstime_init2(&nsta, 42, 43);
+	nstime_imultiply(&nsta, 10);
+	nstime_init2(&nstb, 420, 430);
+	expect_d_eq(nstime_compare(&nsta, &nstb), 0,
+	    "Incorrect multiplication result");
+
+	nstime_init2(&nsta, 42, 666666666);
+	nstime_imultiply(&nsta, 3);
+	nstime_init2(&nstb, 127, 999999998);
+	expect_d_eq(nstime_compare(&nsta, &nstb), 0,
+	    "Incorrect multiplication result");
+}
+TEST_END
+
+TEST_BEGIN(test_nstime_idivide) {
+	nstime_t nsta, nstb;
+
+	nstime_init2(&nsta, 42, 43);
+	nstime_copy(&nstb, &nsta);
+	nstime_imultiply(&nsta, 10);
+	nstime_idivide(&nsta, 10);
+	expect_d_eq(nstime_compare(&nsta, &nstb), 0,
+	    "Incorrect division result");
+
+	nstime_init2(&nsta, 42, 666666666);
+	nstime_copy(&nstb, &nsta);
+	nstime_imultiply(&nsta, 3);
+	nstime_idivide(&nsta, 3);
+	expect_d_eq(nstime_compare(&nsta, &nstb), 0,
+	    "Incorrect division result");
+}
+TEST_END
+
+TEST_BEGIN(test_nstime_divide) {
+	nstime_t nsta, nstb, nstc;
+
+	nstime_init2(&nsta, 42, 43);
+	nstime_copy(&nstb, &nsta);
+	nstime_imultiply(&nsta, 10);
+	expect_u64_eq(nstime_divide(&nsta, &nstb), 10,
+	    "Incorrect division result");
+
+	nstime_init2(&nsta, 42, 43);
+	nstime_copy(&nstb, &nsta);
+	nstime_imultiply(&nsta, 10);
+	nstime_init(&nstc, 1);
+	nstime_add(&nsta, &nstc);
+	expect_u64_eq(nstime_divide(&nsta, &nstb), 10,
+	    "Incorrect division result");
+
+	nstime_init2(&nsta, 42, 43);
+	nstime_copy(&nstb, &nsta);
+	nstime_imultiply(&nsta, 10);
+	nstime_init(&nstc, 1);
+	nstime_subtract(&nsta, &nstc);
+	expect_u64_eq(nstime_divide(&nsta, &nstb), 9,
+	    "Incorrect division result");
+}
+TEST_END
+
+void
+test_nstime_since_once(nstime_t *t) {
+	nstime_t old_t;
+	nstime_copy(&old_t, t);
+
+	uint64_t ns_since = nstime_ns_since(t);
+	nstime_update(t);
+
+	nstime_t new_t;
+	nstime_copy(&new_t, t);
+	nstime_subtract(&new_t, &old_t);
+
+	expect_u64_ge(nstime_ns(&new_t), ns_since,
+	    "Incorrect time since result");
+}
+
+TEST_BEGIN(test_nstime_ns_since) {
+	nstime_t t;
+
+	nstime_init_update(&t);
+	for (uint64_t i = 0; i < 10000; i++) {
+		/* Keeps updating t and verifies ns_since is valid. */
+		test_nstime_since_once(&t);
+	}
+}
+TEST_END
+
+TEST_BEGIN(test_nstime_monotonic) {
+	nstime_monotonic();
+}
+TEST_END
+
+int
+main(void) {
+	return test(
+	    test_nstime_init,
+	    test_nstime_init2,
+	    test_nstime_copy,
+	    test_nstime_compare,
+	    test_nstime_add,
+	    test_nstime_iadd,
+	    test_nstime_subtract,
+	    test_nstime_isubtract,
+	    test_nstime_imultiply,
+	    test_nstime_idivide,
+	    test_nstime_divide,
+	    test_nstime_ns_since,
+	    test_nstime_monotonic);
+}
diff --git a/deps/jemalloc/test/unit/oversize_threshold.c b/deps/jemalloc/test/unit/oversize_threshold.c
new file mode 100644
index 0000000..44a8f76
--- /dev/null
+++ b/deps/jemalloc/test/unit/oversize_threshold.c
@@ -0,0 +1,133 @@
+#include "test/jemalloc_test.h"
+
+#include "jemalloc/internal/ctl.h"
+
+static void
+arena_mallctl(const char *mallctl_str, unsigned arena, void *oldp,
+    size_t *oldlen, void *newp, size_t newlen) {
+	int err;
+	char buf[100];
+	malloc_snprintf(buf, sizeof(buf), mallctl_str, arena);
+
+	err = mallctl(buf, oldp, oldlen, newp, newlen);
+	expect_d_eq(0, err, "Mallctl failed; %s", buf);
+}
+
+TEST_BEGIN(test_oversize_threshold_get_set) {
+	int err;
+	size_t old_threshold;
+	size_t new_threshold;
+	size_t threshold_sz = sizeof(old_threshold);
+
+	unsigned arena;
+	size_t arena_sz = sizeof(arena);
+	err = mallctl("arenas.create", (void *)&arena, &arena_sz, NULL, 0);
+	expect_d_eq(0, err, "Arena creation failed");
+
+	/* Just a write. */
+	new_threshold = 1024 * 1024;
+	arena_mallctl("arena.%u.oversize_threshold", arena, NULL, NULL,
+	    &new_threshold, threshold_sz);
+
+	/* Read and write */
+	new_threshold = 2 * 1024 * 1024;
+	arena_mallctl("arena.%u.oversize_threshold", arena, &old_threshold,
+	    &threshold_sz, &new_threshold, threshold_sz);
+	expect_zu_eq(1024 * 1024, old_threshold, "Should have read old value");
+
+	/* Just a read */
+	arena_mallctl("arena.%u.oversize_threshold", arena, &old_threshold,
+	    &threshold_sz, NULL, 0);
+	expect_zu_eq(2 * 1024 * 1024, old_threshold, "Should have read old value");
+}
+TEST_END
+
+static size_t max_purged = 0;
+static bool
+purge_forced_record_max(extent_hooks_t* hooks, void *addr, size_t sz,
+    size_t offset, size_t length, unsigned arena_ind) {
+	if (length > max_purged) {
+		max_purged = length;
+	}
+	return false;
+}
+
+static bool
+dalloc_record_max(extent_hooks_t *extent_hooks, void *addr, size_t sz,
+    bool comitted, unsigned arena_ind) {
+	if (sz > max_purged) {
+		max_purged = sz;
+	}
+	return false;
+}
+
+extent_hooks_t max_recording_extent_hooks;
+
+TEST_BEGIN(test_oversize_threshold) {
+	max_recording_extent_hooks = ehooks_default_extent_hooks;
+	max_recording_extent_hooks.purge_forced = &purge_forced_record_max;
+	max_recording_extent_hooks.dalloc = &dalloc_record_max;
+
+	extent_hooks_t *extent_hooks = &max_recording_extent_hooks;
+
+	int err;
+
+	unsigned arena;
+	size_t arena_sz = sizeof(arena);
+	err = mallctl("arenas.create", (void *)&arena, &arena_sz, NULL, 0);
+	expect_d_eq(0, err, "Arena creation failed");
+	arena_mallctl("arena.%u.extent_hooks", arena, NULL, NULL, &extent_hooks,
+	    sizeof(extent_hooks));
+
+	/*
+	 * This test will fundamentally race with purging, since we're going to
+	 * check the dirty stats to see if our oversized allocation got purged.
+	 * We don't want other purging to happen accidentally.  We can't just
+	 * disable purging entirely, though, since that will also disable
+	 * oversize purging.  Just set purging intervals to be very large.
+	 */
+	ssize_t decay_ms = 100 * 1000;
+	ssize_t decay_ms_sz = sizeof(decay_ms);
+	arena_mallctl("arena.%u.dirty_decay_ms", arena, NULL, NULL, &decay_ms,
+	    decay_ms_sz);
+	arena_mallctl("arena.%u.muzzy_decay_ms", arena, NULL, NULL, &decay_ms,
+	    decay_ms_sz);
+
+	/* Clean everything out. */
+	arena_mallctl("arena.%u.purge", arena, NULL, NULL, NULL, 0);
+	max_purged = 0;
+
+	/* Set threshold to 1MB. */
+	size_t threshold = 1024 * 1024;
+	size_t threshold_sz = sizeof(threshold);
+	arena_mallctl("arena.%u.oversize_threshold", arena, NULL, NULL,
+	    &threshold, threshold_sz);
+
+	/* Allocating and freeing half a megabyte should leave them dirty. */
+	void *ptr = mallocx(512 * 1024, MALLOCX_ARENA(arena));
+	dallocx(ptr, MALLOCX_TCACHE_NONE);
+	if (!is_background_thread_enabled()) {
+		expect_zu_lt(max_purged, 512 * 1024, "Expected no 512k purge");
+	}
+
+	/* Purge again to reset everything out. */
+	arena_mallctl("arena.%u.purge", arena, NULL, NULL, NULL, 0);
+	max_purged = 0;
+
+	/*
+	 * Allocating and freeing 2 megabytes should have them purged because of
+	 * the oversize threshold.
+	 */
+	ptr = mallocx(2 * 1024 * 1024, MALLOCX_ARENA(arena));
+	dallocx(ptr, MALLOCX_TCACHE_NONE);
+	expect_zu_ge(max_purged, 2 * 1024 * 1024, "Expected a 2MB purge");
+}
+TEST_END
+
+int
+main(void) {
+	return test_no_reentrancy(
+	    test_oversize_threshold_get_set,
+	    test_oversize_threshold);
+}
+
diff --git a/deps/jemalloc/test/unit/pa.c b/deps/jemalloc/test/unit/pa.c
new file mode 100644
index 0000000..b1e2f6e
--- /dev/null
+++ b/deps/jemalloc/test/unit/pa.c
@@ -0,0 +1,126 @@
+#include "test/jemalloc_test.h"
+
+#include "jemalloc/internal/pa.h"
+
+static void *
+alloc_hook(extent_hooks_t *extent_hooks, void *new_addr, size_t size,
+    size_t alignment, bool *zero, bool *commit, unsigned arena_ind) {
+	void *ret = pages_map(new_addr, size, alignment, commit);
+	return ret;
+}
+
+static bool
+merge_hook(extent_hooks_t *extent_hooks, void *addr_a, size_t size_a,
+    void *addr_b, size_t size_b, bool committed, unsigned arena_ind) {
+	return !maps_coalesce;
+}
+
+static bool
+split_hook(extent_hooks_t *extent_hooks, void *addr, size_t size,
+    size_t size_a, size_t size_b, bool committed, unsigned arena_ind) {
+	return !maps_coalesce;
+}
+
+static void
+init_test_extent_hooks(extent_hooks_t *hooks) {
+	/*
+	 * The default hooks are mostly fine for testing.  A few of them,
+	 * though, access globals (alloc for dss setting in an arena, split and
+	 * merge touch the global emap to find head state.  The first of these
+	 * can be fixed by keeping that state with the hooks, where it logically
+	 * belongs.  The second, though, we can only fix when we use the extent
+	 * hook API.
+	 */
+	memcpy(hooks, &ehooks_default_extent_hooks, sizeof(extent_hooks_t));
+	hooks->alloc = &alloc_hook;
+	hooks->merge = &merge_hook;
+	hooks->split = &split_hook;
+}
+
+typedef struct test_data_s test_data_t;
+struct test_data_s {
+	pa_shard_t shard;
+	pa_central_t central;
+	base_t *base;
+	emap_t emap;
+	pa_shard_stats_t stats;
+	malloc_mutex_t stats_mtx;
+	extent_hooks_t hooks;
+};
+
+test_data_t *init_test_data(ssize_t dirty_decay_ms, ssize_t muzzy_decay_ms) {
+	test_data_t *test_data = calloc(1, sizeof(test_data_t));
+	assert_ptr_not_null(test_data, "");
+	init_test_extent_hooks(&test_data->hooks);
+
+	base_t *base = base_new(TSDN_NULL, /* ind */ 1, &test_data->hooks,
+	    /* metadata_use_hooks */ true);
+	assert_ptr_not_null(base, "");
+
+	test_data->base = base;
+	bool err = emap_init(&test_data->emap, test_data->base,
+	    /* zeroed */ true);
+	assert_false(err, "");
+
+	nstime_t time;
+	nstime_init(&time, 0);
+
+	err = pa_central_init(&test_data->central, base, opt_hpa,
+	    &hpa_hooks_default);
+	assert_false(err, "");
+
+	const size_t pa_oversize_threshold = 8 * 1024 * 1024;
+	err = pa_shard_init(TSDN_NULL, &test_data->shard, &test_data->central,
+	    &test_data->emap, test_data->base, /* ind */ 1, &test_data->stats,
+	    &test_data->stats_mtx, &time, pa_oversize_threshold, dirty_decay_ms,
+	    muzzy_decay_ms);
+	assert_false(err, "");
+
+	return test_data;
+}
+
+void destroy_test_data(test_data_t *data) {
+	base_delete(TSDN_NULL, data->base);
+	free(data);
+}
+
+static void *
+do_alloc_free_purge(void *arg) {
+	test_data_t *test_data = (test_data_t *)arg;
+	for (int i = 0; i < 10 * 1000; i++) {
+		bool deferred_work_generated = false;
+		edata_t *edata = pa_alloc(TSDN_NULL, &test_data->shard, PAGE,
+		    PAGE, /* slab */ false, /* szind */ 0, /* zero */ false,
+		    /* guarded */ false, &deferred_work_generated);
+		assert_ptr_not_null(edata, "");
+		pa_dalloc(TSDN_NULL, &test_data->shard, edata,
+		    &deferred_work_generated);
+		malloc_mutex_lock(TSDN_NULL,
+		    &test_data->shard.pac.decay_dirty.mtx);
+		pac_decay_all(TSDN_NULL, &test_data->shard.pac,
+		    &test_data->shard.pac.decay_dirty,
+		    &test_data->shard.pac.stats->decay_dirty,
+		    &test_data->shard.pac.ecache_dirty, true);
+		malloc_mutex_unlock(TSDN_NULL,
+		    &test_data->shard.pac.decay_dirty.mtx);
+	}
+	return NULL;
+}
+
+TEST_BEGIN(test_alloc_free_purge_thds) {
+	test_data_t *test_data = init_test_data(0, 0);
+	thd_t thds[4];
+	for (int i = 0; i < 4; i++) {
+		thd_create(&thds[i], do_alloc_free_purge, test_data);
+	}
+	for (int i = 0; i < 4; i++) {
+		thd_join(thds[i], NULL);
+	}
+}
+TEST_END
+
+int
+main(void) {
+	return test(
+	    test_alloc_free_purge_thds);
+}
diff --git a/deps/jemalloc/test/unit/pack.c b/deps/jemalloc/test/unit/pack.c
new file mode 100644
index 0000000..e639282
--- /dev/null
+++ b/deps/jemalloc/test/unit/pack.c
@@ -0,0 +1,166 @@
+#include "test/jemalloc_test.h"
+
+/*
+ * Size class that is a divisor of the page size, ideally 4+ regions per run.
+ */
+#if LG_PAGE <= 14
+#define SZ	(ZU(1) << (LG_PAGE - 2))
+#else
+#define SZ	ZU(4096)
+#endif
+
+/*
+ * Number of slabs to consume at high water mark.  Should be at least 2 so that
+ * if mmap()ed memory grows downward, downward growth of mmap()ed memory is
+ * tested.
+ */
+#define NSLABS	8
+
+static unsigned
+binind_compute(void) {
+	size_t sz;
+	unsigned nbins, i;
+
+	sz = sizeof(nbins);
+	expect_d_eq(mallctl("arenas.nbins", (void *)&nbins, &sz, NULL, 0), 0,
+	    "Unexpected mallctl failure");
+
+	for (i = 0; i < nbins; i++) {
+		size_t mib[4];
+		size_t miblen = sizeof(mib)/sizeof(size_t);
+		size_t size;
+
+		expect_d_eq(mallctlnametomib("arenas.bin.0.size", mib,
+		    &miblen), 0, "Unexpected mallctlnametomb failure");
+		mib[2] = (size_t)i;
+
+		sz = sizeof(size);
+		expect_d_eq(mallctlbymib(mib, miblen, (void *)&size, &sz, NULL,
+		    0), 0, "Unexpected mallctlbymib failure");
+		if (size == SZ) {
+			return i;
+		}
+	}
+
+	test_fail("Unable to compute nregs_per_run");
+	return 0;
+}
+
+static size_t
+nregs_per_run_compute(void) {
+	uint32_t nregs;
+	size_t sz;
+	unsigned binind = binind_compute();
+	size_t mib[4];
+	size_t miblen = sizeof(mib)/sizeof(size_t);
+
+	expect_d_eq(mallctlnametomib("arenas.bin.0.nregs", mib, &miblen), 0,
+	    "Unexpected mallctlnametomb failure");
+	mib[2] = (size_t)binind;
+	sz = sizeof(nregs);
+	expect_d_eq(mallctlbymib(mib, miblen, (void *)&nregs, &sz, NULL,
+	    0), 0, "Unexpected mallctlbymib failure");
+	return nregs;
+}
+
+static unsigned
+arenas_create_mallctl(void) {
+	unsigned arena_ind;
+	size_t sz;
+
+	sz = sizeof(arena_ind);
+	expect_d_eq(mallctl("arenas.create", (void *)&arena_ind, &sz, NULL, 0),
+	    0, "Error in arenas.create");
+
+	return arena_ind;
+}
+
+static void
+arena_reset_mallctl(unsigned arena_ind) {
+	size_t mib[3];
+	size_t miblen = sizeof(mib)/sizeof(size_t);
+
+	expect_d_eq(mallctlnametomib("arena.0.reset", mib, &miblen), 0,
+	    "Unexpected mallctlnametomib() failure");
+	mib[1] = (size_t)arena_ind;
+	expect_d_eq(mallctlbymib(mib, miblen, NULL, NULL, NULL, 0), 0,
+	    "Unexpected mallctlbymib() failure");
+}
+
+TEST_BEGIN(test_pack) {
+	bool prof_enabled;
+	size_t sz = sizeof(prof_enabled);
+	if (mallctl("opt.prof", (void *)&prof_enabled, &sz, NULL, 0) == 0) {
+		test_skip_if(prof_enabled);
+	}
+
+	unsigned arena_ind = arenas_create_mallctl();
+	size_t nregs_per_run = nregs_per_run_compute();
+	size_t nregs = nregs_per_run * NSLABS;
+	VARIABLE_ARRAY(void *, ptrs, nregs);
+	size_t i, j, offset;
+
+	/* Fill matrix. */
+	for (i = offset = 0; i < NSLABS; i++) {
+		for (j = 0; j < nregs_per_run; j++) {
+			void *p = mallocx(SZ, MALLOCX_ARENA(arena_ind) |
+			    MALLOCX_TCACHE_NONE);
+			expect_ptr_not_null(p,
+			    "Unexpected mallocx(%zu, MALLOCX_ARENA(%u) |"
+			    " MALLOCX_TCACHE_NONE) failure, run=%zu, reg=%zu",
+			    SZ, arena_ind, i, j);
+			ptrs[(i * nregs_per_run) + j] = p;
+		}
+	}
+
+	/*
+	 * Free all but one region of each run, but rotate which region is
+	 * preserved, so that subsequent allocations exercise the within-run
+	 * layout policy.
+	 */
+	offset = 0;
+	for (i = offset = 0;
+	    i < NSLABS;
+	    i++, offset = (offset + 1) % nregs_per_run) {
+		for (j = 0; j < nregs_per_run; j++) {
+			void *p = ptrs[(i * nregs_per_run) + j];
+			if (offset == j) {
+				continue;
+			}
+			dallocx(p, MALLOCX_ARENA(arena_ind) |
+			    MALLOCX_TCACHE_NONE);
+		}
+	}
+
+	/*
+	 * Logically refill matrix, skipping preserved regions and verifying
+	 * that the matrix is unmodified.
+	 */
+	offset = 0;
+	for (i = offset = 0;
+	    i < NSLABS;
+	    i++, offset = (offset + 1) % nregs_per_run) {
+		for (j = 0; j < nregs_per_run; j++) {
+			void *p;
+
+			if (offset == j) {
+				continue;
+			}
+			p = mallocx(SZ, MALLOCX_ARENA(arena_ind) |
+			    MALLOCX_TCACHE_NONE);
+			expect_ptr_eq(p, ptrs[(i * nregs_per_run) + j],
+			    "Unexpected refill discrepancy, run=%zu, reg=%zu\n",
+			    i, j);
+		}
+	}
+
+	/* Clean up. */
+	arena_reset_mallctl(arena_ind);
+}
+TEST_END
+
+int
+main(void) {
+	return test(
+	    test_pack);
+}
diff --git a/deps/jemalloc/test/unit/pack.sh b/deps/jemalloc/test/unit/pack.sh
new file mode 100644
index 0000000..6f45148
--- /dev/null
+++ b/deps/jemalloc/test/unit/pack.sh
@@ -0,0 +1,4 @@
+#!/bin/sh
+
+# Immediately purge to minimize fragmentation.
+export MALLOC_CONF="dirty_decay_ms:0,muzzy_decay_ms:0"
diff --git a/deps/jemalloc/test/unit/pages.c b/deps/jemalloc/test/unit/pages.c
new file mode 100644
index 0000000..8dfd1a7
--- /dev/null
+++ b/deps/jemalloc/test/unit/pages.c
@@ -0,0 +1,29 @@
+#include "test/jemalloc_test.h"
+
+TEST_BEGIN(test_pages_huge) {
+	size_t alloc_size;
+	bool commit;
+	void *pages, *hugepage;
+
+	alloc_size = HUGEPAGE * 2 - PAGE;
+	commit = true;
+	pages = pages_map(NULL, alloc_size, PAGE, &commit);
+	expect_ptr_not_null(pages, "Unexpected pages_map() error");
+
+	if (init_system_thp_mode == thp_mode_default) {
+	    hugepage = (void *)(ALIGNMENT_CEILING((uintptr_t)pages, HUGEPAGE));
+	    expect_b_ne(pages_huge(hugepage, HUGEPAGE), have_madvise_huge,
+	        "Unexpected pages_huge() result");
+	    expect_false(pages_nohuge(hugepage, HUGEPAGE),
+	        "Unexpected pages_nohuge() result");
+	}
+
+	pages_unmap(pages, alloc_size);
+}
+TEST_END
+
+int
+main(void) {
+	return test(
+	    test_pages_huge);
+}
diff --git a/deps/jemalloc/test/unit/peak.c b/deps/jemalloc/test/unit/peak.c
new file mode 100644
index 0000000..1112978
--- /dev/null
+++ b/deps/jemalloc/test/unit/peak.c
@@ -0,0 +1,47 @@
+#include "test/jemalloc_test.h"
+
+#include "jemalloc/internal/peak.h"
+
+TEST_BEGIN(test_peak) {
+	peak_t peak = PEAK_INITIALIZER;
+	expect_u64_eq(0, peak_max(&peak),
+	    "Peak should be zero at initialization");
+	peak_update(&peak, 100, 50);
+	expect_u64_eq(50, peak_max(&peak),
+	    "Missed update");
+	peak_update(&peak, 100, 100);
+	expect_u64_eq(50, peak_max(&peak), "Dallocs shouldn't change peak");
+	peak_update(&peak, 100, 200);
+	expect_u64_eq(50, peak_max(&peak), "Dallocs shouldn't change peak");
+	peak_update(&peak, 200, 200);
+	expect_u64_eq(50, peak_max(&peak), "Haven't reached peak again");
+	peak_update(&peak, 300, 200);
+	expect_u64_eq(100, peak_max(&peak), "Missed an update.");
+	peak_set_zero(&peak, 300, 200);
+	expect_u64_eq(0, peak_max(&peak), "No effect from zeroing");
+	peak_update(&peak, 300, 300);
+	expect_u64_eq(0, peak_max(&peak), "Dalloc shouldn't change peak");
+	peak_update(&peak, 400, 300);
+	expect_u64_eq(0, peak_max(&peak), "Should still be net negative");
+	peak_update(&peak, 500, 300);
+	expect_u64_eq(100, peak_max(&peak), "Missed an update.");
+	/*
+	 * Above, we set to zero while a net allocator; let's try as a
+	 * net-deallocator.
+	 */
+	peak_set_zero(&peak, 600, 700);
+	expect_u64_eq(0, peak_max(&peak), "No effect from zeroing.");
+	peak_update(&peak, 600, 800);
+	expect_u64_eq(0, peak_max(&peak), "Dalloc shouldn't change peak.");
+	peak_update(&peak, 700, 800);
+	expect_u64_eq(0, peak_max(&peak), "Should still be net negative.");
+	peak_update(&peak, 800, 800);
+	expect_u64_eq(100, peak_max(&peak), "Missed an update.");
+}
+TEST_END
+
+int
+main(void) {
+	return test_no_reentrancy(
+	    test_peak);
+}
diff --git a/deps/jemalloc/test/unit/ph.c b/deps/jemalloc/test/unit/ph.c
new file mode 100644
index 0000000..28f5e48
--- /dev/null
+++ b/deps/jemalloc/test/unit/ph.c
@@ -0,0 +1,330 @@
+#include "test/jemalloc_test.h"
+
+#include "jemalloc/internal/ph.h"
+
+typedef struct node_s node_t;
+ph_structs(heap, node_t);
+
+struct node_s {
+#define NODE_MAGIC 0x9823af7e
+	uint32_t magic;
+	heap_link_t link;
+	uint64_t key;
+};
+
+static int
+node_cmp(const node_t *a, const node_t *b) {
+	int ret;
+
+	ret = (a->key > b->key) - (a->key < b->key);
+	if (ret == 0) {
+		/*
+		 * Duplicates are not allowed in the heap, so force an
+		 * arbitrary ordering for non-identical items with equal keys.
+		 */
+		ret = (((uintptr_t)a) > ((uintptr_t)b))
+		    - (((uintptr_t)a) < ((uintptr_t)b));
+	}
+	return ret;
+}
+
+static int
+node_cmp_magic(const node_t *a, const node_t *b) {
+
+	expect_u32_eq(a->magic, NODE_MAGIC, "Bad magic");
+	expect_u32_eq(b->magic, NODE_MAGIC, "Bad magic");
+
+	return node_cmp(a, b);
+}
+
+ph_gen(static, heap, node_t, link, node_cmp_magic);
+
+static node_t *
+node_next_get(const node_t *node) {
+	return phn_next_get((node_t *)node, offsetof(node_t, link));
+}
+
+static node_t *
+node_prev_get(const node_t *node) {
+	return phn_prev_get((node_t *)node, offsetof(node_t, link));
+}
+
+static node_t *
+node_lchild_get(const node_t *node) {
+	return phn_lchild_get((node_t *)node, offsetof(node_t, link));
+}
+
+static void
+node_print(const node_t *node, unsigned depth) {
+	unsigned i;
+	node_t *leftmost_child, *sibling;
+
+	for (i = 0; i < depth; i++) {
+		malloc_printf("\t");
+	}
+	malloc_printf("%2"FMTu64"\n", node->key);
+
+	leftmost_child = node_lchild_get(node);
+	if (leftmost_child == NULL) {
+		return;
+	}
+	node_print(leftmost_child, depth + 1);
+
+	for (sibling = node_next_get(leftmost_child); sibling !=
+	    NULL; sibling = node_next_get(sibling)) {
+		node_print(sibling, depth + 1);
+	}
+}
+
+static void
+heap_print(const heap_t *heap) {
+	node_t *auxelm;
+
+	malloc_printf("vvv heap %p vvv\n", heap);
+	if (heap->ph.root == NULL) {
+		goto label_return;
+	}
+
+	node_print(heap->ph.root, 0);
+
+	for (auxelm = node_next_get(heap->ph.root); auxelm != NULL;
+	    auxelm = node_next_get(auxelm)) {
+		expect_ptr_eq(node_next_get(node_prev_get(auxelm)), auxelm,
+		    "auxelm's prev doesn't link to auxelm");
+		node_print(auxelm, 0);
+	}
+
+label_return:
+	malloc_printf("^^^ heap %p ^^^\n", heap);
+}
+
+static unsigned
+node_validate(const node_t *node, const node_t *parent) {
+	unsigned nnodes = 1;
+	node_t *leftmost_child, *sibling;
+
+	if (parent != NULL) {
+		expect_d_ge(node_cmp_magic(node, parent), 0,
+		    "Child is less than parent");
+	}
+
+	leftmost_child = node_lchild_get(node);
+	if (leftmost_child == NULL) {
+		return nnodes;
+	}
+	expect_ptr_eq(node_prev_get(leftmost_child),
+	    (void *)node, "Leftmost child does not link to node");
+	nnodes += node_validate(leftmost_child, node);
+
+	for (sibling = node_next_get(leftmost_child); sibling !=
+	    NULL; sibling = node_next_get(sibling)) {
+		expect_ptr_eq(node_next_get(node_prev_get(sibling)), sibling,
+		    "sibling's prev doesn't link to sibling");
+		nnodes += node_validate(sibling, node);
+	}
+	return nnodes;
+}
+
+static unsigned
+heap_validate(const heap_t *heap) {
+	unsigned nnodes = 0;
+	node_t *auxelm;
+
+	if (heap->ph.root == NULL) {
+		goto label_return;
+	}
+
+	nnodes += node_validate(heap->ph.root, NULL);
+
+	for (auxelm = node_next_get(heap->ph.root); auxelm != NULL;
+	    auxelm = node_next_get(auxelm)) {
+		expect_ptr_eq(node_next_get(node_prev_get(auxelm)), auxelm,
+		    "auxelm's prev doesn't link to auxelm");
+		nnodes += node_validate(auxelm, NULL);
+	}
+
+label_return:
+	if (false) {
+		heap_print(heap);
+	}
+	return nnodes;
+}
+
+TEST_BEGIN(test_ph_empty) {
+	heap_t heap;
+
+	heap_new(&heap);
+	expect_true(heap_empty(&heap), "Heap should be empty");
+	expect_ptr_null(heap_first(&heap), "Unexpected node");
+	expect_ptr_null(heap_any(&heap), "Unexpected node");
+}
+TEST_END
+
+static void
+node_remove(heap_t *heap, node_t *node) {
+	heap_remove(heap, node);
+
+	node->magic = 0;
+}
+
+static node_t *
+node_remove_first(heap_t *heap) {
+	node_t *node = heap_remove_first(heap);
+	node->magic = 0;
+	return node;
+}
+
+static node_t *
+node_remove_any(heap_t *heap) {
+	node_t *node = heap_remove_any(heap);
+	node->magic = 0;
+	return node;
+}
+
+TEST_BEGIN(test_ph_random) {
+#define NNODES 25
+#define NBAGS 250
+#define SEED 42
+	sfmt_t *sfmt;
+	uint64_t bag[NNODES];
+	heap_t heap;
+	node_t nodes[NNODES];
+	unsigned i, j, k;
+
+	sfmt = init_gen_rand(SEED);
+	for (i = 0; i < NBAGS; i++) {
+		switch (i) {
+		case 0:
+			/* Insert in order. */
+			for (j = 0; j < NNODES; j++) {
+				bag[j] = j;
+			}
+			break;
+		case 1:
+			/* Insert in reverse order. */
+			for (j = 0; j < NNODES; j++) {
+				bag[j] = NNODES - j - 1;
+			}
+			break;
+		default:
+			for (j = 0; j < NNODES; j++) {
+				bag[j] = gen_rand64_range(sfmt, NNODES);
+			}
+		}
+
+		for (j = 1; j <= NNODES; j++) {
+			/* Initialize heap and nodes. */
+			heap_new(&heap);
+			expect_u_eq(heap_validate(&heap), 0,
+			    "Incorrect node count");
+			for (k = 0; k < j; k++) {
+				nodes[k].magic = NODE_MAGIC;
+				nodes[k].key = bag[k];
+			}
+
+			/* Insert nodes. */
+			for (k = 0; k < j; k++) {
+				heap_insert(&heap, &nodes[k]);
+				if (i % 13 == 12) {
+					expect_ptr_not_null(heap_any(&heap),
+					    "Heap should not be empty");
+					/* Trigger merging. */
+					expect_ptr_not_null(heap_first(&heap),
+					    "Heap should not be empty");
+				}
+				expect_u_eq(heap_validate(&heap), k + 1,
+				    "Incorrect node count");
+			}
+
+			expect_false(heap_empty(&heap),
+			    "Heap should not be empty");
+
+			/* Remove nodes. */
+			switch (i % 6) {
+			case 0:
+				for (k = 0; k < j; k++) {
+					expect_u_eq(heap_validate(&heap), j - k,
+					    "Incorrect node count");
+					node_remove(&heap, &nodes[k]);
+					expect_u_eq(heap_validate(&heap), j - k
+					    - 1, "Incorrect node count");
+				}
+				break;
+			case 1:
+				for (k = j; k > 0; k--) {
+					node_remove(&heap, &nodes[k-1]);
+					expect_u_eq(heap_validate(&heap), k - 1,
+					    "Incorrect node count");
+				}
+				break;
+			case 2: {
+				node_t *prev = NULL;
+				for (k = 0; k < j; k++) {
+					node_t *node = node_remove_first(&heap);
+					expect_u_eq(heap_validate(&heap), j - k
+					    - 1, "Incorrect node count");
+					if (prev != NULL) {
+						expect_d_ge(node_cmp(node,
+						    prev), 0,
+						    "Bad removal order");
+					}
+					prev = node;
+				}
+				break;
+			} case 3: {
+				node_t *prev = NULL;
+				for (k = 0; k < j; k++) {
+					node_t *node = heap_first(&heap);
+					expect_u_eq(heap_validate(&heap), j - k,
+					    "Incorrect node count");
+					if (prev != NULL) {
+						expect_d_ge(node_cmp(node,
+						    prev), 0,
+						    "Bad removal order");
+					}
+					node_remove(&heap, node);
+					expect_u_eq(heap_validate(&heap), j - k
+					    - 1, "Incorrect node count");
+					prev = node;
+				}
+				break;
+			} case 4: {
+				for (k = 0; k < j; k++) {
+					node_remove_any(&heap);
+					expect_u_eq(heap_validate(&heap), j - k
+					    - 1, "Incorrect node count");
+				}
+				break;
+			} case 5: {
+				for (k = 0; k < j; k++) {
+					node_t *node = heap_any(&heap);
+					expect_u_eq(heap_validate(&heap), j - k,
+					    "Incorrect node count");
+					node_remove(&heap, node);
+					expect_u_eq(heap_validate(&heap), j - k
+					    - 1, "Incorrect node count");
+				}
+				break;
+			} default:
+				not_reached();
+			}
+
+			expect_ptr_null(heap_first(&heap),
+			    "Heap should be empty");
+			expect_ptr_null(heap_any(&heap),
+			    "Heap should be empty");
+			expect_true(heap_empty(&heap), "Heap should be empty");
+		}
+	}
+	fini_gen_rand(sfmt);
+#undef NNODES
+#undef SEED
+}
+TEST_END
+
+int
+main(void) {
+	return test(
+	    test_ph_empty,
+	    test_ph_random);
+}
diff --git a/deps/jemalloc/test/unit/prng.c b/deps/jemalloc/test/unit/prng.c
new file mode 100644
index 0000000..a6d9b01
--- /dev/null
+++ b/deps/jemalloc/test/unit/prng.c
@@ -0,0 +1,189 @@
+#include "test/jemalloc_test.h"
+
+TEST_BEGIN(test_prng_lg_range_u32) {
+	uint32_t sa, sb;
+	uint32_t ra, rb;
+	unsigned lg_range;
+
+	sa = 42;
+	ra = prng_lg_range_u32(&sa, 32);
+	sa = 42;
+	rb = prng_lg_range_u32(&sa, 32);
+	expect_u32_eq(ra, rb,
+	    "Repeated generation should produce repeated results");
+
+	sb = 42;
+	rb = prng_lg_range_u32(&sb, 32);
+	expect_u32_eq(ra, rb,
+	    "Equivalent generation should produce equivalent results");
+
+	sa = 42;
+	ra = prng_lg_range_u32(&sa, 32);
+	rb = prng_lg_range_u32(&sa, 32);
+	expect_u32_ne(ra, rb,
+	    "Full-width results must not immediately repeat");
+
+	sa = 42;
+	ra = prng_lg_range_u32(&sa, 32);
+	for (lg_range = 31; lg_range > 0; lg_range--) {
+		sb = 42;
+		rb = prng_lg_range_u32(&sb, lg_range);
+		expect_u32_eq((rb & (UINT32_C(0xffffffff) << lg_range)),
+		    0, "High order bits should be 0, lg_range=%u", lg_range);
+		expect_u32_eq(rb, (ra >> (32 - lg_range)),
+		    "Expected high order bits of full-width result, "
+		    "lg_range=%u", lg_range);
+	}
+
+}
+TEST_END
+
+TEST_BEGIN(test_prng_lg_range_u64) {
+	uint64_t sa, sb, ra, rb;
+	unsigned lg_range;
+
+	sa = 42;
+	ra = prng_lg_range_u64(&sa, 64);
+	sa = 42;
+	rb = prng_lg_range_u64(&sa, 64);
+	expect_u64_eq(ra, rb,
+	    "Repeated generation should produce repeated results");
+
+	sb = 42;
+	rb = prng_lg_range_u64(&sb, 64);
+	expect_u64_eq(ra, rb,
+	    "Equivalent generation should produce equivalent results");
+
+	sa = 42;
+	ra = prng_lg_range_u64(&sa, 64);
+	rb = prng_lg_range_u64(&sa, 64);
+	expect_u64_ne(ra, rb,
+	    "Full-width results must not immediately repeat");
+
+	sa = 42;
+	ra = prng_lg_range_u64(&sa, 64);
+	for (lg_range = 63; lg_range > 0; lg_range--) {
+		sb = 42;
+		rb = prng_lg_range_u64(&sb, lg_range);
+		expect_u64_eq((rb & (UINT64_C(0xffffffffffffffff) << lg_range)),
+		    0, "High order bits should be 0, lg_range=%u", lg_range);
+		expect_u64_eq(rb, (ra >> (64 - lg_range)),
+		    "Expected high order bits of full-width result, "
+		    "lg_range=%u", lg_range);
+	}
+}
+TEST_END
+
+TEST_BEGIN(test_prng_lg_range_zu) {
+	size_t sa, sb;
+	size_t ra, rb;
+	unsigned lg_range;
+
+	sa = 42;
+	ra = prng_lg_range_zu(&sa, ZU(1) << (3 + LG_SIZEOF_PTR));
+	sa = 42;
+	rb = prng_lg_range_zu(&sa, ZU(1) << (3 + LG_SIZEOF_PTR));
+	expect_zu_eq(ra, rb,
+	    "Repeated generation should produce repeated results");
+
+	sb = 42;
+	rb = prng_lg_range_zu(&sb, ZU(1) << (3 + LG_SIZEOF_PTR));
+	expect_zu_eq(ra, rb,
+	    "Equivalent generation should produce equivalent results");
+
+	sa = 42;
+	ra = prng_lg_range_zu(&sa, ZU(1) << (3 + LG_SIZEOF_PTR));
+	rb = prng_lg_range_zu(&sa, ZU(1) << (3 + LG_SIZEOF_PTR));
+	expect_zu_ne(ra, rb,
+	    "Full-width results must not immediately repeat");
+
+	sa = 42;
+	ra = prng_lg_range_zu(&sa, ZU(1) << (3 + LG_SIZEOF_PTR));
+	for (lg_range = (ZU(1) << (3 + LG_SIZEOF_PTR)) - 1; lg_range > 0;
+	    lg_range--) {
+		sb = 42;
+		rb = prng_lg_range_zu(&sb, lg_range);
+		expect_zu_eq((rb & (SIZE_T_MAX << lg_range)),
+		    0, "High order bits should be 0, lg_range=%u", lg_range);
+		expect_zu_eq(rb, (ra >> ((ZU(1) << (3 + LG_SIZEOF_PTR)) -
+		    lg_range)), "Expected high order bits of full-width "
+		    "result, lg_range=%u", lg_range);
+	}
+
+}
+TEST_END
+
+TEST_BEGIN(test_prng_range_u32) {
+	uint32_t range;
+
+	const uint32_t max_range = 10000000;
+	const uint32_t range_step = 97;
+	const unsigned nreps = 10;
+
+	for (range = 2; range < max_range; range += range_step) {
+		uint32_t s;
+		unsigned rep;
+
+		s = range;
+		for (rep = 0; rep < nreps; rep++) {
+			uint32_t r = prng_range_u32(&s, range);
+
+			expect_u32_lt(r, range, "Out of range");
+		}
+	}
+}
+TEST_END
+
+TEST_BEGIN(test_prng_range_u64) {
+	uint64_t range;
+
+	const uint64_t max_range = 10000000;
+	const uint64_t range_step = 97;
+	const unsigned nreps = 10;
+
+	for (range = 2; range < max_range; range += range_step) {
+		uint64_t s;
+		unsigned rep;
+
+		s = range;
+		for (rep = 0; rep < nreps; rep++) {
+			uint64_t r = prng_range_u64(&s, range);
+
+			expect_u64_lt(r, range, "Out of range");
+		}
+	}
+}
+TEST_END
+
+TEST_BEGIN(test_prng_range_zu) {
+	size_t range;
+
+	const size_t max_range = 10000000;
+	const size_t range_step = 97;
+	const unsigned nreps = 10;
+
+
+	for (range = 2; range < max_range; range += range_step) {
+		size_t s;
+		unsigned rep;
+
+		s = range;
+		for (rep = 0; rep < nreps; rep++) {
+			size_t r = prng_range_zu(&s, range);
+
+			expect_zu_lt(r, range, "Out of range");
+		}
+	}
+}
+TEST_END
+
+int
+main(void) {
+	return test_no_reentrancy(
+	    test_prng_lg_range_u32,
+	    test_prng_lg_range_u64,
+	    test_prng_lg_range_zu,
+	    test_prng_range_u32,
+	    test_prng_range_u64,
+	    test_prng_range_zu);
+}
diff --git a/deps/jemalloc/test/unit/prof_accum.c b/deps/jemalloc/test/unit/prof_accum.c
new file mode 100644
index 0000000..ef392ac
--- /dev/null
+++ b/deps/jemalloc/test/unit/prof_accum.c
@@ -0,0 +1,84 @@
+#include "test/jemalloc_test.h"
+
+#include "jemalloc/internal/prof_data.h"
+#include "jemalloc/internal/prof_sys.h"
+
+#define NTHREADS		4
+#define NALLOCS_PER_THREAD	50
+#define DUMP_INTERVAL		1
+#define BT_COUNT_CHECK_INTERVAL	5
+
+static int
+prof_dump_open_file_intercept(const char *filename, int mode) {
+	int fd;
+
+	fd = open("/dev/null", O_WRONLY);
+	assert_d_ne(fd, -1, "Unexpected open() failure");
+
+	return fd;
+}
+
+static void *
+alloc_from_permuted_backtrace(unsigned thd_ind, unsigned iteration) {
+	return btalloc(1, thd_ind*NALLOCS_PER_THREAD + iteration);
+}
+
+static void *
+thd_start(void *varg) {
+	unsigned thd_ind = *(unsigned *)varg;
+	size_t bt_count_prev, bt_count;
+	unsigned i_prev, i;
+
+	i_prev = 0;
+	bt_count_prev = 0;
+	for (i = 0; i < NALLOCS_PER_THREAD; i++) {
+		void *p = alloc_from_permuted_backtrace(thd_ind, i);
+		dallocx(p, 0);
+		if (i % DUMP_INTERVAL == 0) {
+			expect_d_eq(mallctl("prof.dump", NULL, NULL, NULL, 0),
+			    0, "Unexpected error while dumping heap profile");
+		}
+
+		if (i % BT_COUNT_CHECK_INTERVAL == 0 ||
+		    i+1 == NALLOCS_PER_THREAD) {
+			bt_count = prof_bt_count();
+			expect_zu_le(bt_count_prev+(i-i_prev), bt_count,
+			    "Expected larger backtrace count increase");
+			i_prev = i;
+			bt_count_prev = bt_count;
+		}
+	}
+
+	return NULL;
+}
+
+TEST_BEGIN(test_idump) {
+	bool active;
+	thd_t thds[NTHREADS];
+	unsigned thd_args[NTHREADS];
+	unsigned i;
+
+	test_skip_if(!config_prof);
+
+	active = true;
+	expect_d_eq(mallctl("prof.active", NULL, NULL, (void *)&active,
+	    sizeof(active)), 0,
+	    "Unexpected mallctl failure while activating profiling");
+
+	prof_dump_open_file = prof_dump_open_file_intercept;
+
+	for (i = 0; i < NTHREADS; i++) {
+		thd_args[i] = i;
+		thd_create(&thds[i], thd_start, (void *)&thd_args[i]);
+	}
+	for (i = 0; i < NTHREADS; i++) {
+		thd_join(thds[i], NULL);
+	}
+}
+TEST_END
+
+int
+main(void) {
+	return test_no_reentrancy(
+	    test_idump);
+}
diff --git a/deps/jemalloc/test/unit/prof_accum.sh b/deps/jemalloc/test/unit/prof_accum.sh
new file mode 100644
index 0000000..b3e13fc
--- /dev/null
+++ b/deps/jemalloc/test/unit/prof_accum.sh
@@ -0,0 +1,5 @@
+#!/bin/sh
+
+if [ "x${enable_prof}" = "x1" ] ; then
+  export MALLOC_CONF="prof:true,prof_accum:true,prof_active:false,lg_prof_sample:0"
+fi
diff --git a/deps/jemalloc/test/unit/prof_active.c b/deps/jemalloc/test/unit/prof_active.c
new file mode 100644
index 0000000..af29e7a
--- /dev/null
+++ b/deps/jemalloc/test/unit/prof_active.c
@@ -0,0 +1,119 @@
+#include "test/jemalloc_test.h"
+
+#include "jemalloc/internal/prof_data.h"
+
+static void
+mallctl_bool_get(const char *name, bool expected, const char *func, int line) {
+	bool old;
+	size_t sz;
+
+	sz = sizeof(old);
+	expect_d_eq(mallctl(name, (void *)&old, &sz, NULL, 0), 0,
+	    "%s():%d: Unexpected mallctl failure reading %s", func, line, name);
+	expect_b_eq(old, expected, "%s():%d: Unexpected %s value", func, line,
+	    name);
+}
+
+static void
+mallctl_bool_set(const char *name, bool old_expected, bool val_new,
+    const char *func, int line) {
+	bool old;
+	size_t sz;
+
+	sz = sizeof(old);
+	expect_d_eq(mallctl(name, (void *)&old, &sz, (void *)&val_new,
+	    sizeof(val_new)), 0,
+	    "%s():%d: Unexpected mallctl failure reading/writing %s", func,
+	    line, name);
+	expect_b_eq(old, old_expected, "%s():%d: Unexpected %s value", func,
+	    line, name);
+}
+
+static void
+mallctl_prof_active_get_impl(bool prof_active_old_expected, const char *func,
+    int line) {
+	mallctl_bool_get("prof.active", prof_active_old_expected, func, line);
+}
+#define mallctl_prof_active_get(a)					\
+	mallctl_prof_active_get_impl(a, __func__, __LINE__)
+
+static void
+mallctl_prof_active_set_impl(bool prof_active_old_expected,
+    bool prof_active_new, const char *func, int line) {
+	mallctl_bool_set("prof.active", prof_active_old_expected,
+	    prof_active_new, func, line);
+}
+#define mallctl_prof_active_set(a, b)					\
+	mallctl_prof_active_set_impl(a, b, __func__, __LINE__)
+
+static void
+mallctl_thread_prof_active_get_impl(bool thread_prof_active_old_expected,
+    const char *func, int line) {
+	mallctl_bool_get("thread.prof.active", thread_prof_active_old_expected,
+	    func, line);
+}
+#define mallctl_thread_prof_active_get(a)				\
+	mallctl_thread_prof_active_get_impl(a, __func__, __LINE__)
+
+static void
+mallctl_thread_prof_active_set_impl(bool thread_prof_active_old_expected,
+    bool thread_prof_active_new, const char *func, int line) {
+	mallctl_bool_set("thread.prof.active", thread_prof_active_old_expected,
+	    thread_prof_active_new, func, line);
+}
+#define mallctl_thread_prof_active_set(a, b)				\
+	mallctl_thread_prof_active_set_impl(a, b, __func__, __LINE__)
+
+static void
+prof_sampling_probe_impl(bool expect_sample, const char *func, int line) {
+	void *p;
+	size_t expected_backtraces = expect_sample ? 1 : 0;
+
+	expect_zu_eq(prof_bt_count(), 0, "%s():%d: Expected 0 backtraces", func,
+	    line);
+	p = mallocx(1, 0);
+	expect_ptr_not_null(p, "Unexpected mallocx() failure");
+	expect_zu_eq(prof_bt_count(), expected_backtraces,
+	    "%s():%d: Unexpected backtrace count", func, line);
+	dallocx(p, 0);
+}
+#define prof_sampling_probe(a)						\
+	prof_sampling_probe_impl(a, __func__, __LINE__)
+
+TEST_BEGIN(test_prof_active) {
+	test_skip_if(!config_prof);
+
+	mallctl_prof_active_get(true);
+	mallctl_thread_prof_active_get(false);
+
+	mallctl_prof_active_set(true, true);
+	mallctl_thread_prof_active_set(false, false);
+	/* prof.active, !thread.prof.active. */
+	prof_sampling_probe(false);
+
+	mallctl_prof_active_set(true, false);
+	mallctl_thread_prof_active_set(false, false);
+	/* !prof.active, !thread.prof.active. */
+	prof_sampling_probe(false);
+
+	mallctl_prof_active_set(false, false);
+	mallctl_thread_prof_active_set(false, true);
+	/* !prof.active, thread.prof.active. */
+	prof_sampling_probe(false);
+
+	mallctl_prof_active_set(false, true);
+	mallctl_thread_prof_active_set(true, true);
+	/* prof.active, thread.prof.active. */
+	prof_sampling_probe(true);
+
+	/* Restore settings. */
+	mallctl_prof_active_set(true, true);
+	mallctl_thread_prof_active_set(true, false);
+}
+TEST_END
+
+int
+main(void) {
+	return test_no_reentrancy(
+	    test_prof_active);
+}
diff --git a/deps/jemalloc/test/unit/prof_active.sh b/deps/jemalloc/test/unit/prof_active.sh
new file mode 100644
index 0000000..9749674
--- /dev/null
+++ b/deps/jemalloc/test/unit/prof_active.sh
@@ -0,0 +1,5 @@
+#!/bin/sh
+
+if [ "x${enable_prof}" = "x1" ] ; then
+  export MALLOC_CONF="prof:true,prof_active:true,prof_thread_active_init:false,lg_prof_sample:0"
+fi
diff --git a/deps/jemalloc/test/unit/prof_gdump.c b/deps/jemalloc/test/unit/prof_gdump.c
new file mode 100644
index 0000000..46e4503
--- /dev/null
+++ b/deps/jemalloc/test/unit/prof_gdump.c
@@ -0,0 +1,77 @@
+#include "test/jemalloc_test.h"
+
+#include "jemalloc/internal/prof_sys.h"
+
+static bool did_prof_dump_open;
+
+static int
+prof_dump_open_file_intercept(const char *filename, int mode) {
+	int fd;
+
+	did_prof_dump_open = true;
+
+	fd = open("/dev/null", O_WRONLY);
+	assert_d_ne(fd, -1, "Unexpected open() failure");
+
+	return fd;
+}
+
+TEST_BEGIN(test_gdump) {
+	test_skip_if(opt_hpa);
+	bool active, gdump, gdump_old;
+	void *p, *q, *r, *s;
+	size_t sz;
+
+	test_skip_if(!config_prof);
+
+	active = true;
+	expect_d_eq(mallctl("prof.active", NULL, NULL, (void *)&active,
+	    sizeof(active)), 0,
+	    "Unexpected mallctl failure while activating profiling");
+
+	prof_dump_open_file = prof_dump_open_file_intercept;
+
+	did_prof_dump_open = false;
+	p = mallocx((1U << SC_LG_LARGE_MINCLASS), 0);
+	expect_ptr_not_null(p, "Unexpected mallocx() failure");
+	expect_true(did_prof_dump_open, "Expected a profile dump");
+
+	did_prof_dump_open = false;
+	q = mallocx((1U << SC_LG_LARGE_MINCLASS), 0);
+	expect_ptr_not_null(q, "Unexpected mallocx() failure");
+	expect_true(did_prof_dump_open, "Expected a profile dump");
+
+	gdump = false;
+	sz = sizeof(gdump_old);
+	expect_d_eq(mallctl("prof.gdump", (void *)&gdump_old, &sz,
+	    (void *)&gdump, sizeof(gdump)), 0,
+	    "Unexpected mallctl failure while disabling prof.gdump");
+	assert(gdump_old);
+	did_prof_dump_open = false;
+	r = mallocx((1U << SC_LG_LARGE_MINCLASS), 0);
+	expect_ptr_not_null(q, "Unexpected mallocx() failure");
+	expect_false(did_prof_dump_open, "Unexpected profile dump");
+
+	gdump = true;
+	sz = sizeof(gdump_old);
+	expect_d_eq(mallctl("prof.gdump", (void *)&gdump_old, &sz,
+	    (void *)&gdump, sizeof(gdump)), 0,
+	    "Unexpected mallctl failure while enabling prof.gdump");
+	assert(!gdump_old);
+	did_prof_dump_open = false;
+	s = mallocx((1U << SC_LG_LARGE_MINCLASS), 0);
+	expect_ptr_not_null(q, "Unexpected mallocx() failure");
+	expect_true(did_prof_dump_open, "Expected a profile dump");
+
+	dallocx(p, 0);
+	dallocx(q, 0);
+	dallocx(r, 0);
+	dallocx(s, 0);
+}
+TEST_END
+
+int
+main(void) {
+	return test_no_reentrancy(
+	    test_gdump);
+}
diff --git a/deps/jemalloc/test/unit/prof_gdump.sh b/deps/jemalloc/test/unit/prof_gdump.sh
new file mode 100644
index 0000000..3f600d2
--- /dev/null
+++ b/deps/jemalloc/test/unit/prof_gdump.sh
@@ -0,0 +1,6 @@
+#!/bin/sh
+
+if [ "x${enable_prof}" = "x1" ] ; then
+  export MALLOC_CONF="prof:true,prof_active:false,prof_gdump:true"
+fi
+
diff --git a/deps/jemalloc/test/unit/prof_hook.c b/deps/jemalloc/test/unit/prof_hook.c
new file mode 100644
index 0000000..6480d93
--- /dev/null
+++ b/deps/jemalloc/test/unit/prof_hook.c
@@ -0,0 +1,169 @@
+#include "test/jemalloc_test.h"
+
+const char *dump_filename = "/dev/null";
+
+prof_backtrace_hook_t default_hook;
+
+bool mock_bt_hook_called = false;
+bool mock_dump_hook_called = false;
+
+void
+mock_bt_hook(void **vec, unsigned *len, unsigned max_len) {
+	*len = max_len;
+	for (unsigned i = 0; i < max_len; ++i) {
+		vec[i] = (void *)((uintptr_t)i);
+	}
+	mock_bt_hook_called = true;
+}
+
+void
+mock_bt_augmenting_hook(void **vec, unsigned *len, unsigned max_len) {
+	default_hook(vec, len, max_len);
+	expect_u_gt(*len, 0, "Default backtrace hook returned empty backtrace");
+	expect_u_lt(*len, max_len,
+	    "Default backtrace hook returned too large backtrace");
+
+	/* Add a separator between default frames and augmented */
+	vec[*len] = (void *)0x030303030;
+	(*len)++;
+
+	/* Add more stack frames */
+	for (unsigned i = 0; i < 3; ++i) {
+		if (*len == max_len) {
+			break;
+		}
+		vec[*len] = (void *)((uintptr_t)i);
+		(*len)++;
+	}
+
+
+	mock_bt_hook_called = true;
+}
+
+void
+mock_dump_hook(const char *filename) {
+	mock_dump_hook_called = true;
+	expect_str_eq(filename, dump_filename,
+	    "Incorrect file name passed to the dump hook");
+}
+
+TEST_BEGIN(test_prof_backtrace_hook_replace) {
+
+	test_skip_if(!config_prof);
+
+	mock_bt_hook_called = false;
+
+	void *p0 = mallocx(1, 0);
+	assert_ptr_not_null(p0, "Failed to allocate");
+
+	expect_false(mock_bt_hook_called, "Called mock hook before it's set");
+
+	prof_backtrace_hook_t null_hook = NULL;
+	expect_d_eq(mallctl("experimental.hooks.prof_backtrace",
+	    NULL, 0, (void *)&null_hook,  sizeof(null_hook)),
+		EINVAL, "Incorrectly allowed NULL backtrace hook");
+
+	size_t default_hook_sz = sizeof(prof_backtrace_hook_t);
+	prof_backtrace_hook_t hook = &mock_bt_hook;
+	expect_d_eq(mallctl("experimental.hooks.prof_backtrace",
+	    (void *)&default_hook, &default_hook_sz, (void *)&hook,
+	    sizeof(hook)), 0, "Unexpected mallctl failure setting hook");
+
+	void *p1 = mallocx(1, 0);
+	assert_ptr_not_null(p1, "Failed to allocate");
+
+	expect_true(mock_bt_hook_called, "Didn't call mock hook");
+
+	prof_backtrace_hook_t current_hook;
+	size_t current_hook_sz = sizeof(prof_backtrace_hook_t);
+	expect_d_eq(mallctl("experimental.hooks.prof_backtrace",
+	    (void *)&current_hook, &current_hook_sz, (void *)&default_hook,
+	    sizeof(default_hook)), 0,
+	    "Unexpected mallctl failure resetting hook to default");
+
+	expect_ptr_eq(current_hook, hook,
+	    "Hook returned by mallctl is not equal to mock hook");
+
+	dallocx(p1, 0);
+	dallocx(p0, 0);
+}
+TEST_END
+
+TEST_BEGIN(test_prof_backtrace_hook_augment) {
+
+	test_skip_if(!config_prof);
+
+	mock_bt_hook_called = false;
+
+	void *p0 = mallocx(1, 0);
+	assert_ptr_not_null(p0, "Failed to allocate");
+
+	expect_false(mock_bt_hook_called, "Called mock hook before it's set");
+
+	size_t default_hook_sz = sizeof(prof_backtrace_hook_t);
+	prof_backtrace_hook_t hook = &mock_bt_augmenting_hook;
+	expect_d_eq(mallctl("experimental.hooks.prof_backtrace",
+	    (void *)&default_hook, &default_hook_sz, (void *)&hook,
+	    sizeof(hook)), 0, "Unexpected mallctl failure setting hook");
+
+	void *p1 = mallocx(1, 0);
+	assert_ptr_not_null(p1, "Failed to allocate");
+
+	expect_true(mock_bt_hook_called, "Didn't call mock hook");
+
+	prof_backtrace_hook_t current_hook;
+	size_t current_hook_sz = sizeof(prof_backtrace_hook_t);
+	expect_d_eq(mallctl("experimental.hooks.prof_backtrace",
+	    (void *)&current_hook, &current_hook_sz, (void *)&default_hook,
+	    sizeof(default_hook)), 0,
+	    "Unexpected mallctl failure resetting hook to default");
+
+	expect_ptr_eq(current_hook, hook,
+	    "Hook returned by mallctl is not equal to mock hook");
+
+	dallocx(p1, 0);
+	dallocx(p0, 0);
+}
+TEST_END
+
+TEST_BEGIN(test_prof_dump_hook) {
+
+	test_skip_if(!config_prof);
+
+	mock_dump_hook_called = false;
+
+	expect_d_eq(mallctl("prof.dump", NULL, NULL, (void *)&dump_filename,
+	    sizeof(dump_filename)), 0, "Failed to dump heap profile");
+
+	expect_false(mock_dump_hook_called, "Called dump hook before it's set");
+
+	size_t default_hook_sz = sizeof(prof_dump_hook_t);
+	prof_dump_hook_t hook = &mock_dump_hook;
+	expect_d_eq(mallctl("experimental.hooks.prof_dump",
+	    (void *)&default_hook, &default_hook_sz, (void *)&hook,
+	    sizeof(hook)), 0, "Unexpected mallctl failure setting hook");
+
+	expect_d_eq(mallctl("prof.dump", NULL, NULL, (void *)&dump_filename,
+	    sizeof(dump_filename)), 0, "Failed to dump heap profile");
+
+	expect_true(mock_dump_hook_called, "Didn't call mock hook");
+
+	prof_dump_hook_t current_hook;
+	size_t current_hook_sz = sizeof(prof_dump_hook_t);
+	expect_d_eq(mallctl("experimental.hooks.prof_dump",
+	    (void *)&current_hook, &current_hook_sz, (void *)&default_hook,
+	    sizeof(default_hook)), 0,
+	    "Unexpected mallctl failure resetting hook to default");
+
+	expect_ptr_eq(current_hook, hook,
+	    "Hook returned by mallctl is not equal to mock hook");
+}
+TEST_END
+
+int
+main(void) {
+	return test(
+	    test_prof_backtrace_hook_replace,
+	    test_prof_backtrace_hook_augment,
+	    test_prof_dump_hook);
+}
diff --git a/deps/jemalloc/test/unit/prof_hook.sh b/deps/jemalloc/test/unit/prof_hook.sh
new file mode 100644
index 0000000..c7ebd8f
--- /dev/null
+++ b/deps/jemalloc/test/unit/prof_hook.sh
@@ -0,0 +1,6 @@
+#!/bin/sh
+
+if [ "x${enable_prof}" = "x1" ] ; then
+  export MALLOC_CONF="prof:true,prof_active:true,lg_prof_sample:0"
+fi
+
diff --git a/deps/jemalloc/test/unit/prof_idump.c b/deps/jemalloc/test/unit/prof_idump.c
new file mode 100644
index 0000000..455ac52
--- /dev/null
+++ b/deps/jemalloc/test/unit/prof_idump.c
@@ -0,0 +1,57 @@
+#include "test/jemalloc_test.h"
+
+#include "jemalloc/internal/prof_sys.h"
+
+#define TEST_PREFIX "test_prefix"
+
+static bool did_prof_dump_open;
+
+static int
+prof_dump_open_file_intercept(const char *filename, int mode) {
+	int fd;
+
+	did_prof_dump_open = true;
+
+	const char filename_prefix[] = TEST_PREFIX ".";
+	expect_d_eq(strncmp(filename_prefix, filename, sizeof(filename_prefix)
+	    - 1), 0, "Dump file name should start with \"" TEST_PREFIX ".\"");
+
+	fd = open("/dev/null", O_WRONLY);
+	assert_d_ne(fd, -1, "Unexpected open() failure");
+
+	return fd;
+}
+
+TEST_BEGIN(test_idump) {
+	bool active;
+	void *p;
+
+	const char *test_prefix = TEST_PREFIX;
+
+	test_skip_if(!config_prof);
+
+	active = true;
+
+	expect_d_eq(mallctl("prof.prefix", NULL, NULL, (void *)&test_prefix,
+	    sizeof(test_prefix)), 0,
+	    "Unexpected mallctl failure while overwriting dump prefix");
+
+	expect_d_eq(mallctl("prof.active", NULL, NULL, (void *)&active,
+	    sizeof(active)), 0,
+	    "Unexpected mallctl failure while activating profiling");
+
+	prof_dump_open_file = prof_dump_open_file_intercept;
+
+	did_prof_dump_open = false;
+	p = mallocx(1, 0);
+	expect_ptr_not_null(p, "Unexpected mallocx() failure");
+	dallocx(p, 0);
+	expect_true(did_prof_dump_open, "Expected a profile dump");
+}
+TEST_END
+
+int
+main(void) {
+	return test(
+	    test_idump);
+}
diff --git a/deps/jemalloc/test/unit/prof_idump.sh b/deps/jemalloc/test/unit/prof_idump.sh
new file mode 100644
index 0000000..4dc599a
--- /dev/null
+++ b/deps/jemalloc/test/unit/prof_idump.sh
@@ -0,0 +1,8 @@
+#!/bin/sh
+
+export MALLOC_CONF="tcache:false"
+if [ "x${enable_prof}" = "x1" ] ; then
+  export MALLOC_CONF="${MALLOC_CONF},prof:true,prof_accum:true,prof_active:false,lg_prof_sample:0,lg_prof_interval:0"
+fi
+
+
diff --git a/deps/jemalloc/test/unit/prof_log.c b/deps/jemalloc/test/unit/prof_log.c
new file mode 100644
index 0000000..5ff208e
--- /dev/null
+++ b/deps/jemalloc/test/unit/prof_log.c
@@ -0,0 +1,151 @@
+#include "test/jemalloc_test.h"
+#include "jemalloc/internal/prof_log.h"
+
+#define N_PARAM 100
+#define N_THREADS 10
+
+static void expect_rep() {
+	expect_b_eq(prof_log_rep_check(), false, "Rep check failed");
+}
+
+static void expect_log_empty() {
+	expect_zu_eq(prof_log_bt_count(), 0,
+	    "The log has backtraces; it isn't empty");
+	expect_zu_eq(prof_log_thr_count(), 0,
+	    "The log has threads; it isn't empty");
+	expect_zu_eq(prof_log_alloc_count(), 0,
+	    "The log has allocations; it isn't empty");
+}
+
+void *buf[N_PARAM];
+
+static void f() {
+	int i;
+	for (i = 0; i < N_PARAM; i++) {
+		buf[i] = malloc(100);
+	}
+	for (i = 0; i < N_PARAM; i++) {
+		free(buf[i]);
+	}
+}
+
+TEST_BEGIN(test_prof_log_many_logs) {
+	int i;
+
+	test_skip_if(!config_prof);
+
+	for (i = 0; i < N_PARAM; i++) {
+		expect_b_eq(prof_log_is_logging(), false,
+		    "Logging shouldn't have started yet");
+		expect_d_eq(mallctl("prof.log_start", NULL, NULL, NULL, 0), 0,
+		    "Unexpected mallctl failure when starting logging");
+		expect_b_eq(prof_log_is_logging(), true,
+		    "Logging should be started by now");
+		expect_log_empty();
+		expect_rep();
+		f();
+		expect_zu_eq(prof_log_thr_count(), 1, "Wrong thread count");
+		expect_rep();
+		expect_b_eq(prof_log_is_logging(), true,
+		    "Logging should still be on");
+		expect_d_eq(mallctl("prof.log_stop", NULL, NULL, NULL, 0), 0,
+		    "Unexpected mallctl failure when stopping logging");
+		expect_b_eq(prof_log_is_logging(), false,
+		    "Logging should have turned off");
+	}
+}
+TEST_END
+
+thd_t thr_buf[N_THREADS];
+
+static void *f_thread(void *unused) {
+	int i;
+	for (i = 0; i < N_PARAM; i++) {
+		void *p = malloc(100);
+		memset(p, 100, 1);
+		free(p);
+	}
+
+	return NULL;
+}
+
+TEST_BEGIN(test_prof_log_many_threads) {
+
+	test_skip_if(!config_prof);
+
+	int i;
+	expect_d_eq(mallctl("prof.log_start", NULL, NULL, NULL, 0), 0,
+	    "Unexpected mallctl failure when starting logging");
+	for (i = 0; i < N_THREADS; i++) {
+		thd_create(&thr_buf[i], &f_thread, NULL);
+	}
+
+	for (i = 0; i < N_THREADS; i++) {
+		thd_join(thr_buf[i], NULL);
+	}
+	expect_zu_eq(prof_log_thr_count(), N_THREADS,
+	    "Wrong number of thread entries");
+	expect_rep();
+	expect_d_eq(mallctl("prof.log_stop", NULL, NULL, NULL, 0), 0,
+	    "Unexpected mallctl failure when stopping logging");
+}
+TEST_END
+
+static void f3() {
+	void *p = malloc(100);
+	free(p);
+}
+
+static void f1() {
+	void *p = malloc(100);
+	f3();
+	free(p);
+}
+
+static void f2() {
+	void *p = malloc(100);
+	free(p);
+}
+
+TEST_BEGIN(test_prof_log_many_traces) {
+
+	test_skip_if(!config_prof);
+
+	expect_d_eq(mallctl("prof.log_start", NULL, NULL, NULL, 0), 0,
+	    "Unexpected mallctl failure when starting logging");
+	int i;
+	expect_rep();
+	expect_log_empty();
+	for (i = 0; i < N_PARAM; i++) {
+		expect_rep();
+		f1();
+		expect_rep();
+		f2();
+		expect_rep();
+		f3();
+		expect_rep();
+	}
+	/*
+	 * There should be 8 total backtraces: two for malloc/free in f1(), two
+	 * for malloc/free in f2(), two for malloc/free in f3(), and then two
+	 * for malloc/free in f1()'s call to f3().  However compiler
+	 * optimizations such as loop unrolling might generate more call sites.
+	 * So >= 8 traces are expected.
+	 */
+	expect_zu_ge(prof_log_bt_count(), 8,
+	    "Expect at least 8 backtraces given sample workload");
+	expect_d_eq(mallctl("prof.log_stop", NULL, NULL, NULL, 0), 0,
+	    "Unexpected mallctl failure when stopping logging");
+}
+TEST_END
+
+int
+main(void) {
+	if (config_prof) {
+		prof_log_dummy_set(true);
+	}
+	return test_no_reentrancy(
+	    test_prof_log_many_logs,
+	    test_prof_log_many_traces,
+	    test_prof_log_many_threads);
+}
diff --git a/deps/jemalloc/test/unit/prof_log.sh b/deps/jemalloc/test/unit/prof_log.sh
new file mode 100644
index 0000000..485f9bf
--- /dev/null
+++ b/deps/jemalloc/test/unit/prof_log.sh
@@ -0,0 +1,5 @@
+#!/bin/sh
+
+if [ "x${enable_prof}" = "x1" ] ; then
+  export MALLOC_CONF="prof:true,prof_active:true,lg_prof_sample:0"
+fi
diff --git a/deps/jemalloc/test/unit/prof_mdump.c b/deps/jemalloc/test/unit/prof_mdump.c
new file mode 100644
index 0000000..75b3a51
--- /dev/null
+++ b/deps/jemalloc/test/unit/prof_mdump.c
@@ -0,0 +1,216 @@
+#include "test/jemalloc_test.h"
+
+#include "jemalloc/internal/prof_sys.h"
+
+static const char *test_filename = "test_filename";
+static bool did_prof_dump_open;
+
+static int
+prof_dump_open_file_intercept(const char *filename, int mode) {
+	int fd;
+
+	did_prof_dump_open = true;
+
+	/*
+	 * Stronger than a strcmp() - verifying that we internally directly use
+	 * the caller supplied char pointer.
+	 */
+	expect_ptr_eq(filename, test_filename,
+	    "Dump file name should be \"%s\"", test_filename);
+
+	fd = open("/dev/null", O_WRONLY);
+	assert_d_ne(fd, -1, "Unexpected open() failure");
+
+	return fd;
+}
+
+TEST_BEGIN(test_mdump_normal) {
+	test_skip_if(!config_prof);
+
+	prof_dump_open_file_t *open_file_orig = prof_dump_open_file;
+
+	void *p = mallocx(1, 0);
+	assert_ptr_not_null(p, "Unexpected mallocx() failure");
+
+	prof_dump_open_file = prof_dump_open_file_intercept;
+	did_prof_dump_open = false;
+	expect_d_eq(mallctl("prof.dump", NULL, NULL, (void *)&test_filename,
+	    sizeof(test_filename)), 0,
+	    "Unexpected mallctl failure while dumping");
+	expect_true(did_prof_dump_open, "Expected a profile dump");
+
+	dallocx(p, 0);
+
+	prof_dump_open_file = open_file_orig;
+}
+TEST_END
+
+static int
+prof_dump_open_file_error(const char *filename, int mode) {
+	return -1;
+}
+
+/*
+ * In the context of test_mdump_output_error, prof_dump_write_file_count is the
+ * total number of times prof_dump_write_file_error() is expected to be called.
+ * In the context of test_mdump_maps_error, prof_dump_write_file_count is the
+ * total number of times prof_dump_write_file_error() is expected to be called
+ * starting from the one that contains an 'M' (beginning the "MAPPED_LIBRARIES"
+ * header).
+ */
+static int prof_dump_write_file_count;
+
+static ssize_t
+prof_dump_write_file_error(int fd, const void *s, size_t len) {
+	--prof_dump_write_file_count;
+
+	expect_d_ge(prof_dump_write_file_count, 0,
+	    "Write is called after error occurs");
+
+	if (prof_dump_write_file_count == 0) {
+		return -1;
+	} else {
+		/*
+		 * Any non-negative number indicates success, and for
+		 * simplicity we just use 0.  When prof_dump_write_file_count
+		 * is positive, it means that we haven't reached the write that
+		 * we want to fail; when prof_dump_write_file_count is
+		 * negative, it means that we've already violated the
+		 * expect_d_ge(prof_dump_write_file_count, 0) statement above,
+		 * but instead of aborting, we continue the rest of the test,
+		 * and we indicate that all the writes after the failed write
+		 * are successful.
+		 */
+		return 0;
+	}
+}
+
+static void
+expect_write_failure(int count) {
+	prof_dump_write_file_count = count;
+	expect_d_eq(mallctl("prof.dump", NULL, NULL, (void *)&test_filename,
+	    sizeof(test_filename)), EFAULT, "Dump should err");
+	expect_d_eq(prof_dump_write_file_count, 0,
+	    "Dumping stopped after a wrong number of writes");
+}
+
+TEST_BEGIN(test_mdump_output_error) {
+	test_skip_if(!config_prof);
+	test_skip_if(!config_debug);
+
+	prof_dump_open_file_t *open_file_orig = prof_dump_open_file;
+	prof_dump_write_file_t *write_file_orig = prof_dump_write_file;
+
+	prof_dump_write_file = prof_dump_write_file_error;
+
+	void *p = mallocx(1, 0);
+	assert_ptr_not_null(p, "Unexpected mallocx() failure");
+
+	/*
+	 * When opening the dump file fails, there shouldn't be any write, and
+	 * mallctl() should return failure.
+	 */
+	prof_dump_open_file = prof_dump_open_file_error;
+	expect_write_failure(0);
+
+	/*
+	 * When the n-th write fails, there shouldn't be any more write, and
+	 * mallctl() should return failure.
+	 */
+	prof_dump_open_file = prof_dump_open_file_intercept;
+	expect_write_failure(1); /* First write fails. */
+	expect_write_failure(2); /* Second write fails. */
+
+	dallocx(p, 0);
+
+	prof_dump_open_file = open_file_orig;
+	prof_dump_write_file = write_file_orig;
+}
+TEST_END
+
+static int
+prof_dump_open_maps_error() {
+	return -1;
+}
+
+static bool started_piping_maps_file;
+
+static ssize_t
+prof_dump_write_maps_file_error(int fd, const void *s, size_t len) {
+	/* The main dump doesn't contain any capital 'M'. */
+	if (!started_piping_maps_file && strchr(s, 'M') != NULL) {
+		started_piping_maps_file = true;
+	}
+
+	if (started_piping_maps_file) {
+		return prof_dump_write_file_error(fd, s, len);
+	} else {
+		/* Return success when we haven't started piping maps. */
+		return 0;
+	}
+}
+
+static void
+expect_maps_write_failure(int count) {
+	int mfd = prof_dump_open_maps();
+	if (mfd == -1) {
+		/* No need to continue if we just can't find the maps file. */
+		return;
+	}
+	close(mfd);
+	started_piping_maps_file = false;
+	expect_write_failure(count);
+	expect_true(started_piping_maps_file, "Should start piping maps");
+}
+
+TEST_BEGIN(test_mdump_maps_error) {
+	test_skip_if(!config_prof);
+	test_skip_if(!config_debug);
+
+	prof_dump_open_file_t *open_file_orig = prof_dump_open_file;
+	prof_dump_write_file_t *write_file_orig = prof_dump_write_file;
+	prof_dump_open_maps_t *open_maps_orig = prof_dump_open_maps;
+
+	prof_dump_open_file = prof_dump_open_file_intercept;
+	prof_dump_write_file = prof_dump_write_maps_file_error;
+
+	void *p = mallocx(1, 0);
+	assert_ptr_not_null(p, "Unexpected mallocx() failure");
+
+	/*
+	 * When opening the maps file fails, there shouldn't be any maps write,
+	 * and mallctl() should return success.
+	 */
+	prof_dump_open_maps = prof_dump_open_maps_error;
+	started_piping_maps_file = false;
+	prof_dump_write_file_count = 0;
+	expect_d_eq(mallctl("prof.dump", NULL, NULL, (void *)&test_filename,
+	    sizeof(test_filename)), 0,
+	    "mallctl should not fail in case of maps file opening failure");
+	expect_false(started_piping_maps_file, "Shouldn't start piping maps");
+	expect_d_eq(prof_dump_write_file_count, 0,
+	    "Dumping stopped after a wrong number of writes");
+
+	/*
+	 * When the n-th maps write fails (given that we are able to find the
+	 * maps file), there shouldn't be any more maps write, and mallctl()
+	 * should return failure.
+	 */
+	prof_dump_open_maps = open_maps_orig;
+	expect_maps_write_failure(1); /* First write fails. */
+	expect_maps_write_failure(2); /* Second write fails. */
+
+	dallocx(p, 0);
+
+	prof_dump_open_file = open_file_orig;
+	prof_dump_write_file = write_file_orig;
+}
+TEST_END
+
+int
+main(void) {
+	return test(
+	    test_mdump_normal,
+	    test_mdump_output_error,
+	    test_mdump_maps_error);
+}
diff --git a/deps/jemalloc/test/unit/prof_mdump.sh b/deps/jemalloc/test/unit/prof_mdump.sh
new file mode 100644
index 0000000..d14cb8c
--- /dev/null
+++ b/deps/jemalloc/test/unit/prof_mdump.sh
@@ -0,0 +1,6 @@
+#!/bin/sh
+
+if [ "x${enable_prof}" = "x1" ] ; then
+  export MALLOC_CONF="prof:true,lg_prof_sample:0"
+fi
+
diff --git a/deps/jemalloc/test/unit/prof_recent.c b/deps/jemalloc/test/unit/prof_recent.c
new file mode 100644
index 0000000..4fb3723
--- /dev/null
+++ b/deps/jemalloc/test/unit/prof_recent.c
@@ -0,0 +1,678 @@
+#include "test/jemalloc_test.h"
+
+#include "jemalloc/internal/prof_recent.h"
+
+/* As specified in the shell script */
+#define OPT_ALLOC_MAX 3
+
+/* Invariant before and after every test (when config_prof is on) */
+static void
+confirm_prof_setup() {
+	/* Options */
+	assert_true(opt_prof, "opt_prof not on");
+	assert_true(opt_prof_active, "opt_prof_active not on");
+	assert_zd_eq(opt_prof_recent_alloc_max, OPT_ALLOC_MAX,
+	    "opt_prof_recent_alloc_max not set correctly");
+
+	/* Dynamics */
+	assert_true(prof_active_state, "prof_active not on");
+	assert_zd_eq(prof_recent_alloc_max_ctl_read(), OPT_ALLOC_MAX,
+	    "prof_recent_alloc_max not set correctly");
+}
+
+TEST_BEGIN(test_confirm_setup) {
+	test_skip_if(!config_prof);
+	confirm_prof_setup();
+}
+TEST_END
+
+TEST_BEGIN(test_prof_recent_off) {
+	test_skip_if(config_prof);
+
+	const ssize_t past_ref = 0, future_ref = 0;
+	const size_t len_ref = sizeof(ssize_t);
+
+	ssize_t past = past_ref, future = future_ref;
+	size_t len = len_ref;
+
+#define ASSERT_SHOULD_FAIL(opt, a, b, c, d) do {			\
+	assert_d_eq(mallctl("experimental.prof_recent." opt, a, b, c,	\
+	    d), ENOENT, "Should return ENOENT when config_prof is off");\
+	assert_zd_eq(past, past_ref, "output was touched");		\
+	assert_zu_eq(len, len_ref, "output length was touched");	\
+	assert_zd_eq(future, future_ref, "input was touched");		\
+} while (0)
+
+	ASSERT_SHOULD_FAIL("alloc_max", NULL, NULL, NULL, 0);
+	ASSERT_SHOULD_FAIL("alloc_max", &past, &len, NULL, 0);
+	ASSERT_SHOULD_FAIL("alloc_max", NULL, NULL, &future, len);
+	ASSERT_SHOULD_FAIL("alloc_max", &past, &len, &future, len);
+
+#undef ASSERT_SHOULD_FAIL
+}
+TEST_END
+
+TEST_BEGIN(test_prof_recent_on) {
+	test_skip_if(!config_prof);
+
+	ssize_t past, future;
+	size_t len = sizeof(ssize_t);
+
+	confirm_prof_setup();
+
+	assert_d_eq(mallctl("experimental.prof_recent.alloc_max",
+	    NULL, NULL, NULL, 0), 0, "no-op mallctl should be allowed");
+	confirm_prof_setup();
+
+	assert_d_eq(mallctl("experimental.prof_recent.alloc_max",
+	    &past, &len, NULL, 0), 0, "Read error");
+	expect_zd_eq(past, OPT_ALLOC_MAX, "Wrong read result");
+	future = OPT_ALLOC_MAX + 1;
+	assert_d_eq(mallctl("experimental.prof_recent.alloc_max",
+	    NULL, NULL, &future, len), 0, "Write error");
+	future = -1;
+	assert_d_eq(mallctl("experimental.prof_recent.alloc_max",
+	    &past, &len, &future, len), 0, "Read/write error");
+	expect_zd_eq(past, OPT_ALLOC_MAX + 1, "Wrong read result");
+	future = -2;
+	assert_d_eq(mallctl("experimental.prof_recent.alloc_max",
+	    &past, &len, &future, len), EINVAL,
+	    "Invalid write should return EINVAL");
+	expect_zd_eq(past, OPT_ALLOC_MAX + 1,
+	    "Output should not be touched given invalid write");
+	future = OPT_ALLOC_MAX;
+	assert_d_eq(mallctl("experimental.prof_recent.alloc_max",
+	    &past, &len, &future, len), 0, "Read/write error");
+	expect_zd_eq(past, -1, "Wrong read result");
+	future = OPT_ALLOC_MAX + 2;
+	assert_d_eq(mallctl("experimental.prof_recent.alloc_max",
+	    &past, &len, &future, len * 2), EINVAL,
+	    "Invalid write should return EINVAL");
+	expect_zd_eq(past, -1,
+	    "Output should not be touched given invalid write");
+
+	confirm_prof_setup();
+}
+TEST_END
+
+/* Reproducible sequence of request sizes */
+#define NTH_REQ_SIZE(n) ((n) * 97 + 101)
+
+static void
+confirm_malloc(void *p) {
+	assert_ptr_not_null(p, "malloc failed unexpectedly");
+	edata_t *e = emap_edata_lookup(TSDN_NULL, &arena_emap_global, p);
+	assert_ptr_not_null(e, "NULL edata for living pointer");
+	prof_recent_t *n = edata_prof_recent_alloc_get_no_lock_test(e);
+	assert_ptr_not_null(n, "Record in edata should not be NULL");
+	expect_ptr_not_null(n->alloc_tctx,
+	    "alloc_tctx in record should not be NULL");
+	expect_ptr_eq(e, prof_recent_alloc_edata_get_no_lock_test(n),
+	    "edata pointer in record is not correct");
+	expect_ptr_null(n->dalloc_tctx, "dalloc_tctx in record should be NULL");
+}
+
+static void
+confirm_record_size(prof_recent_t *n, unsigned kth) {
+	expect_zu_eq(n->size, NTH_REQ_SIZE(kth),
+	    "Recorded allocation size is wrong");
+}
+
+static void
+confirm_record_living(prof_recent_t *n) {
+	expect_ptr_not_null(n->alloc_tctx,
+	    "alloc_tctx in record should not be NULL");
+	edata_t *edata = prof_recent_alloc_edata_get_no_lock_test(n);
+	assert_ptr_not_null(edata,
+	    "Recorded edata should not be NULL for living pointer");
+	expect_ptr_eq(n, edata_prof_recent_alloc_get_no_lock_test(edata),
+	    "Record in edata is not correct");
+	expect_ptr_null(n->dalloc_tctx, "dalloc_tctx in record should be NULL");
+}
+
+static void
+confirm_record_released(prof_recent_t *n) {
+	expect_ptr_not_null(n->alloc_tctx,
+	    "alloc_tctx in record should not be NULL");
+	expect_ptr_null(prof_recent_alloc_edata_get_no_lock_test(n),
+	    "Recorded edata should be NULL for released pointer");
+	expect_ptr_not_null(n->dalloc_tctx,
+	    "dalloc_tctx in record should not be NULL for released pointer");
+}
+
+TEST_BEGIN(test_prof_recent_alloc) {
+	test_skip_if(!config_prof);
+
+	bool b;
+	unsigned i, c;
+	size_t req_size;
+	void *p;
+	prof_recent_t *n;
+	ssize_t future;
+
+	confirm_prof_setup();
+
+	/*
+	 * First batch of 2 * OPT_ALLOC_MAX allocations.  After the
+	 * (OPT_ALLOC_MAX - 1)'th allocation the recorded allocations should
+	 * always be the last OPT_ALLOC_MAX allocations coming from here.
+	 */
+	for (i = 0; i < 2 * OPT_ALLOC_MAX; ++i) {
+		req_size = NTH_REQ_SIZE(i);
+		p = malloc(req_size);
+		confirm_malloc(p);
+		if (i < OPT_ALLOC_MAX - 1) {
+			assert_false(ql_empty(&prof_recent_alloc_list),
+			    "Empty recent allocation");
+			free(p);
+			/*
+			 * The recorded allocations may still include some
+			 * other allocations before the test run started,
+			 * so keep allocating without checking anything.
+			 */
+			continue;
+		}
+		c = 0;
+		ql_foreach(n, &prof_recent_alloc_list, link) {
+			++c;
+			confirm_record_size(n, i + c - OPT_ALLOC_MAX);
+			if (c == OPT_ALLOC_MAX) {
+				confirm_record_living(n);
+			} else {
+				confirm_record_released(n);
+			}
+		}
+		assert_u_eq(c, OPT_ALLOC_MAX,
+		    "Incorrect total number of allocations");
+		free(p);
+	}
+
+	confirm_prof_setup();
+
+	b = false;
+	assert_d_eq(mallctl("prof.active", NULL, NULL, &b, sizeof(bool)), 0,
+	    "mallctl for turning off prof_active failed");
+
+	/*
+	 * Second batch of OPT_ALLOC_MAX allocations.  Since prof_active is
+	 * turned off, this batch shouldn't be recorded.
+	 */
+	for (; i < 3 * OPT_ALLOC_MAX; ++i) {
+		req_size = NTH_REQ_SIZE(i);
+		p = malloc(req_size);
+		assert_ptr_not_null(p, "malloc failed unexpectedly");
+		c = 0;
+		ql_foreach(n, &prof_recent_alloc_list, link) {
+			confirm_record_size(n, c + OPT_ALLOC_MAX);
+			confirm_record_released(n);
+			++c;
+		}
+		assert_u_eq(c, OPT_ALLOC_MAX,
+		    "Incorrect total number of allocations");
+		free(p);
+	}
+
+	b = true;
+	assert_d_eq(mallctl("prof.active", NULL, NULL, &b, sizeof(bool)), 0,
+	    "mallctl for turning on prof_active failed");
+
+	confirm_prof_setup();
+
+	/*
+	 * Third batch of OPT_ALLOC_MAX allocations.  Since prof_active is
+	 * turned back on, they should be recorded, and in the list of recorded
+	 * allocations they should follow the first batch rather than the
+	 * second batch.
+	 */
+	for (; i < 4 * OPT_ALLOC_MAX; ++i) {
+		req_size = NTH_REQ_SIZE(i);
+		p = malloc(req_size);
+		confirm_malloc(p);
+		c = 0;
+		ql_foreach(n, &prof_recent_alloc_list, link) {
+			++c;
+			confirm_record_size(n,
+			    /* Is the allocation from the third batch? */
+			    i + c - OPT_ALLOC_MAX >= 3 * OPT_ALLOC_MAX ?
+			    /* If yes, then it's just recorded. */
+			    i + c - OPT_ALLOC_MAX :
+			    /*
+			     * Otherwise, it should come from the first batch
+			     * instead of the second batch.
+			     */
+			    i + c - 2 * OPT_ALLOC_MAX);
+			if (c == OPT_ALLOC_MAX) {
+				confirm_record_living(n);
+			} else {
+				confirm_record_released(n);
+			}
+		}
+		assert_u_eq(c, OPT_ALLOC_MAX,
+		    "Incorrect total number of allocations");
+		free(p);
+	}
+
+	/* Increasing the limit shouldn't alter the list of records. */
+	future = OPT_ALLOC_MAX + 1;
+	assert_d_eq(mallctl("experimental.prof_recent.alloc_max",
+	    NULL, NULL, &future, sizeof(ssize_t)), 0, "Write error");
+	c = 0;
+	ql_foreach(n, &prof_recent_alloc_list, link) {
+		confirm_record_size(n, c + 3 * OPT_ALLOC_MAX);
+		confirm_record_released(n);
+		++c;
+	}
+	assert_u_eq(c, OPT_ALLOC_MAX,
+	    "Incorrect total number of allocations");
+
+	/*
+	 * Decreasing the limit shouldn't alter the list of records as long as
+	 * the new limit is still no less than the length of the list.
+	 */
+	future = OPT_ALLOC_MAX;
+	assert_d_eq(mallctl("experimental.prof_recent.alloc_max",
+	    NULL, NULL, &future, sizeof(ssize_t)), 0, "Write error");
+	c = 0;
+	ql_foreach(n, &prof_recent_alloc_list, link) {
+		confirm_record_size(n, c + 3 * OPT_ALLOC_MAX);
+		confirm_record_released(n);
+		++c;
+	}
+	assert_u_eq(c, OPT_ALLOC_MAX,
+	    "Incorrect total number of allocations");
+
+	/*
+	 * Decreasing the limit should shorten the list of records if the new
+	 * limit is less than the length of the list.
+	 */
+	future = OPT_ALLOC_MAX - 1;
+	assert_d_eq(mallctl("experimental.prof_recent.alloc_max",
+	    NULL, NULL, &future, sizeof(ssize_t)), 0, "Write error");
+	c = 0;
+	ql_foreach(n, &prof_recent_alloc_list, link) {
+		++c;
+		confirm_record_size(n, c + 3 * OPT_ALLOC_MAX);
+		confirm_record_released(n);
+	}
+	assert_u_eq(c, OPT_ALLOC_MAX - 1,
+	    "Incorrect total number of allocations");
+
+	/* Setting to unlimited shouldn't alter the list of records. */
+	future = -1;
+	assert_d_eq(mallctl("experimental.prof_recent.alloc_max",
+	    NULL, NULL, &future, sizeof(ssize_t)), 0, "Write error");
+	c = 0;
+	ql_foreach(n, &prof_recent_alloc_list, link) {
+		++c;
+		confirm_record_size(n, c + 3 * OPT_ALLOC_MAX);
+		confirm_record_released(n);
+	}
+	assert_u_eq(c, OPT_ALLOC_MAX - 1,
+	    "Incorrect total number of allocations");
+
+	/* Downshift to only one record. */
+	future = 1;
+	assert_d_eq(mallctl("experimental.prof_recent.alloc_max",
+	    NULL, NULL, &future, sizeof(ssize_t)), 0, "Write error");
+	assert_false(ql_empty(&prof_recent_alloc_list), "Recent list is empty");
+	n = ql_first(&prof_recent_alloc_list);
+	confirm_record_size(n, 4 * OPT_ALLOC_MAX - 1);
+	confirm_record_released(n);
+	n = ql_next(&prof_recent_alloc_list, n, link);
+	assert_ptr_null(n, "Recent list should only contain one record");
+
+	/* Completely turn off. */
+	future = 0;
+	assert_d_eq(mallctl("experimental.prof_recent.alloc_max",
+	    NULL, NULL, &future, sizeof(ssize_t)), 0, "Write error");
+	assert_true(ql_empty(&prof_recent_alloc_list),
+	    "Recent list should be empty");
+
+	/* Restore the settings. */
+	future = OPT_ALLOC_MAX;
+	assert_d_eq(mallctl("experimental.prof_recent.alloc_max",
+	    NULL, NULL, &future, sizeof(ssize_t)), 0, "Write error");
+	assert_true(ql_empty(&prof_recent_alloc_list),
+	    "Recent list should be empty");
+
+	confirm_prof_setup();
+}
+TEST_END
+
+#undef NTH_REQ_SIZE
+
+#define DUMP_OUT_SIZE 4096
+static char dump_out[DUMP_OUT_SIZE];
+static size_t dump_out_len = 0;
+
+static void
+test_dump_write_cb(void *not_used, const char *str) {
+	size_t len = strlen(str);
+	assert(dump_out_len + len < DUMP_OUT_SIZE);
+	memcpy(dump_out + dump_out_len, str, len + 1);
+	dump_out_len += len;
+}
+
+static void
+call_dump() {
+	static void *in[2] = {test_dump_write_cb, NULL};
+	dump_out_len = 0;
+	assert_d_eq(mallctl("experimental.prof_recent.alloc_dump",
+	    NULL, NULL, in, sizeof(in)), 0, "Dump mallctl raised error");
+}
+
+typedef struct {
+	size_t size;
+	size_t usize;
+	bool released;
+} confirm_record_t;
+
+#define DUMP_ERROR "Dump output is wrong"
+
+static void
+confirm_record(const char *template, const confirm_record_t *records,
+    const size_t n_records) {
+	static const char *types[2] = {"alloc", "dalloc"};
+	static char buf[64];
+
+	/*
+	 * The template string would be in the form of:
+	 * "{...,\"recent_alloc\":[]}",
+	 * and dump_out would be in the form of:
+	 * "{...,\"recent_alloc\":[...]}".
+	 * Using "- 2" serves to cut right before the ending "]}".
+	 */
+	assert_d_eq(memcmp(dump_out, template, strlen(template) - 2), 0,
+	    DUMP_ERROR);
+	assert_d_eq(memcmp(dump_out + strlen(dump_out) - 2,
+	    template + strlen(template) - 2, 2), 0, DUMP_ERROR);
+
+	const char *start = dump_out + strlen(template) - 2;
+	const char *end = dump_out + strlen(dump_out) - 2;
+	const confirm_record_t *record;
+	for (record = records; record < records + n_records; ++record) {
+
+#define ASSERT_CHAR(c) do {						\
+	assert_true(start < end, DUMP_ERROR);				\
+	assert_c_eq(*start++, c, DUMP_ERROR);				\
+} while (0)
+
+#define ASSERT_STR(s) do {						\
+	const size_t len = strlen(s);					\
+	assert_true(start + len <= end, DUMP_ERROR);			\
+	assert_d_eq(memcmp(start, s, len), 0, DUMP_ERROR);		\
+	start += len;							\
+} while (0)
+
+#define ASSERT_FORMATTED_STR(s, ...) do {				\
+	malloc_snprintf(buf, sizeof(buf), s, __VA_ARGS__);		\
+	ASSERT_STR(buf);						\
+} while (0)
+
+		if (record != records) {
+			ASSERT_CHAR(',');
+		}
+
+		ASSERT_CHAR('{');
+
+		ASSERT_STR("\"size\"");
+		ASSERT_CHAR(':');
+		ASSERT_FORMATTED_STR("%zu", record->size);
+		ASSERT_CHAR(',');
+
+		ASSERT_STR("\"usize\"");
+		ASSERT_CHAR(':');
+		ASSERT_FORMATTED_STR("%zu", record->usize);
+		ASSERT_CHAR(',');
+
+		ASSERT_STR("\"released\"");
+		ASSERT_CHAR(':');
+		ASSERT_STR(record->released ? "true" : "false");
+		ASSERT_CHAR(',');
+
+		const char **type = types;
+		while (true) {
+			ASSERT_FORMATTED_STR("\"%s_thread_uid\"", *type);
+			ASSERT_CHAR(':');
+			while (isdigit(*start)) {
+				++start;
+			}
+			ASSERT_CHAR(',');
+
+			if (opt_prof_sys_thread_name) {
+				ASSERT_FORMATTED_STR("\"%s_thread_name\"",
+				    *type);
+				ASSERT_CHAR(':');
+				ASSERT_CHAR('"');
+				while (*start != '"') {
+					++start;
+				}
+				ASSERT_CHAR('"');
+				ASSERT_CHAR(',');
+			}
+
+			ASSERT_FORMATTED_STR("\"%s_time\"", *type);
+			ASSERT_CHAR(':');
+			while (isdigit(*start)) {
+				++start;
+			}
+			ASSERT_CHAR(',');
+
+			ASSERT_FORMATTED_STR("\"%s_trace\"", *type);
+			ASSERT_CHAR(':');
+			ASSERT_CHAR('[');
+			while (isdigit(*start) || *start == 'x' ||
+			    (*start >= 'a' && *start <= 'f') ||
+			    *start == '\"' || *start == ',') {
+				++start;
+			}
+			ASSERT_CHAR(']');
+
+			if (strcmp(*type, "dalloc") == 0) {
+				break;
+			}
+
+			assert(strcmp(*type, "alloc") == 0);
+			if (!record->released) {
+				break;
+			}
+
+			ASSERT_CHAR(',');
+			++type;
+		}
+
+		ASSERT_CHAR('}');
+
+#undef ASSERT_FORMATTED_STR
+#undef ASSERT_STR
+#undef ASSERT_CHAR
+
+	}
+	assert_ptr_eq(record, records + n_records, DUMP_ERROR);
+	assert_ptr_eq(start, end, DUMP_ERROR);
+}
+
+TEST_BEGIN(test_prof_recent_alloc_dump) {
+	test_skip_if(!config_prof);
+
+	confirm_prof_setup();
+
+	ssize_t future;
+	void *p, *q;
+	confirm_record_t records[2];
+
+	assert_zu_eq(lg_prof_sample, (size_t)0,
+	    "lg_prof_sample not set correctly");
+
+	future = 0;
+	assert_d_eq(mallctl("experimental.prof_recent.alloc_max",
+	    NULL, NULL, &future, sizeof(ssize_t)), 0, "Write error");
+	call_dump();
+	expect_str_eq(dump_out, "{\"sample_interval\":1,"
+	    "\"recent_alloc_max\":0,\"recent_alloc\":[]}", DUMP_ERROR);
+
+	future = 2;
+	assert_d_eq(mallctl("experimental.prof_recent.alloc_max",
+	    NULL, NULL, &future, sizeof(ssize_t)), 0, "Write error");
+	call_dump();
+	const char *template = "{\"sample_interval\":1,"
+	    "\"recent_alloc_max\":2,\"recent_alloc\":[]}";
+	expect_str_eq(dump_out, template, DUMP_ERROR);
+
+	p = malloc(7);
+	call_dump();
+	records[0].size = 7;
+	records[0].usize = sz_s2u(7);
+	records[0].released = false;
+	confirm_record(template, records, 1);
+
+	q = mallocx(17, MALLOCX_ALIGN(128));
+	call_dump();
+	records[1].size = 17;
+	records[1].usize = sz_sa2u(17, 128);
+	records[1].released = false;
+	confirm_record(template, records, 2);
+
+	free(q);
+	call_dump();
+	records[1].released = true;
+	confirm_record(template, records, 2);
+
+	free(p);
+	call_dump();
+	records[0].released = true;
+	confirm_record(template, records, 2);
+
+	future = OPT_ALLOC_MAX;
+	assert_d_eq(mallctl("experimental.prof_recent.alloc_max",
+	    NULL, NULL, &future, sizeof(ssize_t)), 0, "Write error");
+	confirm_prof_setup();
+}
+TEST_END
+
+#undef DUMP_ERROR
+#undef DUMP_OUT_SIZE
+
+#define N_THREADS 8
+#define N_PTRS 512
+#define N_CTLS 8
+#define N_ITERS 2048
+#define STRESS_ALLOC_MAX 4096
+
+typedef struct {
+	thd_t thd;
+	size_t id;
+	void *ptrs[N_PTRS];
+	size_t count;
+} thd_data_t;
+
+static thd_data_t thd_data[N_THREADS];
+static ssize_t test_max;
+
+static void
+test_write_cb(void *cbopaque, const char *str) {
+	sleep_ns(1000 * 1000);
+}
+
+static void *
+f_thread(void *arg) {
+	const size_t thd_id = *(size_t *)arg;
+	thd_data_t *data_p = thd_data + thd_id;
+	assert(data_p->id == thd_id);
+	data_p->count = 0;
+	uint64_t rand = (uint64_t)thd_id;
+	tsd_t *tsd = tsd_fetch();
+	assert(test_max > 1);
+	ssize_t last_max = -1;
+	for (int i = 0; i < N_ITERS; i++) {
+		rand = prng_range_u64(&rand, N_PTRS + N_CTLS * 5);
+		assert(data_p->count <= N_PTRS);
+		if (rand < data_p->count) {
+			assert(data_p->count > 0);
+			if (rand != data_p->count - 1) {
+				assert(data_p->count > 1);
+				void *temp = data_p->ptrs[rand];
+				data_p->ptrs[rand] =
+				    data_p->ptrs[data_p->count - 1];
+				data_p->ptrs[data_p->count - 1] = temp;
+			}
+			free(data_p->ptrs[--data_p->count]);
+		} else if (rand < N_PTRS) {
+			assert(data_p->count < N_PTRS);
+			data_p->ptrs[data_p->count++] = malloc(1);
+		} else if (rand % 5 == 0) {
+			prof_recent_alloc_dump(tsd, test_write_cb, NULL);
+		} else if (rand % 5 == 1) {
+			last_max = prof_recent_alloc_max_ctl_read();
+		} else if (rand % 5 == 2) {
+			last_max =
+			    prof_recent_alloc_max_ctl_write(tsd, test_max * 2);
+		} else if (rand % 5 == 3) {
+			last_max =
+			    prof_recent_alloc_max_ctl_write(tsd, test_max);
+		} else {
+			assert(rand % 5 == 4);
+			last_max =
+			    prof_recent_alloc_max_ctl_write(tsd, test_max / 2);
+		}
+		assert_zd_ge(last_max, -1, "Illegal last-N max");
+	}
+
+	while (data_p->count > 0) {
+		free(data_p->ptrs[--data_p->count]);
+	}
+
+	return NULL;
+}
+
+TEST_BEGIN(test_prof_recent_stress) {
+	test_skip_if(!config_prof);
+
+	confirm_prof_setup();
+
+	test_max = OPT_ALLOC_MAX;
+	for (size_t i = 0; i < N_THREADS; i++) {
+		thd_data_t *data_p = thd_data + i;
+		data_p->id = i;
+		thd_create(&data_p->thd, &f_thread, &data_p->id);
+	}
+	for (size_t i = 0; i < N_THREADS; i++) {
+		thd_data_t *data_p = thd_data + i;
+		thd_join(data_p->thd, NULL);
+	}
+
+	test_max = STRESS_ALLOC_MAX;
+	assert_d_eq(mallctl("experimental.prof_recent.alloc_max",
+	    NULL, NULL, &test_max, sizeof(ssize_t)), 0, "Write error");
+	for (size_t i = 0; i < N_THREADS; i++) {
+		thd_data_t *data_p = thd_data + i;
+		data_p->id = i;
+		thd_create(&data_p->thd, &f_thread, &data_p->id);
+	}
+	for (size_t i = 0; i < N_THREADS; i++) {
+		thd_data_t *data_p = thd_data + i;
+		thd_join(data_p->thd, NULL);
+	}
+
+	test_max = OPT_ALLOC_MAX;
+	assert_d_eq(mallctl("experimental.prof_recent.alloc_max",
+	    NULL, NULL, &test_max, sizeof(ssize_t)), 0, "Write error");
+	confirm_prof_setup();
+}
+TEST_END
+
+#undef STRESS_ALLOC_MAX
+#undef N_ITERS
+#undef N_PTRS
+#undef N_THREADS
+
+int
+main(void) {
+	return test(
+	    test_confirm_setup,
+	    test_prof_recent_off,
+	    test_prof_recent_on,
+	    test_prof_recent_alloc,
+	    test_prof_recent_alloc_dump,
+	    test_prof_recent_stress);
+}
diff --git a/deps/jemalloc/test/unit/prof_recent.sh b/deps/jemalloc/test/unit/prof_recent.sh
new file mode 100644
index 0000000..58a54a4
--- /dev/null
+++ b/deps/jemalloc/test/unit/prof_recent.sh
@@ -0,0 +1,5 @@
+#!/bin/sh
+
+if [ "x${enable_prof}" = "x1" ] ; then
+  export MALLOC_CONF="prof:true,prof_active:true,lg_prof_sample:0,prof_recent_alloc_max:3"
+fi
diff --git a/deps/jemalloc/test/unit/prof_reset.c b/deps/jemalloc/test/unit/prof_reset.c
new file mode 100644
index 0000000..9b33b20
--- /dev/null
+++ b/deps/jemalloc/test/unit/prof_reset.c
@@ -0,0 +1,266 @@
+#include "test/jemalloc_test.h"
+
+#include "jemalloc/internal/prof_data.h"
+#include "jemalloc/internal/prof_sys.h"
+
+static int
+prof_dump_open_file_intercept(const char *filename, int mode) {
+	int fd;
+
+	fd = open("/dev/null", O_WRONLY);
+	assert_d_ne(fd, -1, "Unexpected open() failure");
+
+	return fd;
+}
+
+static void
+set_prof_active(bool active) {
+	expect_d_eq(mallctl("prof.active", NULL, NULL, (void *)&active,
+	    sizeof(active)), 0, "Unexpected mallctl failure");
+}
+
+static size_t
+get_lg_prof_sample(void) {
+	size_t ret;
+	size_t sz = sizeof(size_t);
+
+	expect_d_eq(mallctl("prof.lg_sample", (void *)&ret, &sz, NULL, 0), 0,
+	    "Unexpected mallctl failure while reading profiling sample rate");
+	return ret;
+}
+
+static void
+do_prof_reset(size_t lg_prof_sample_input) {
+	expect_d_eq(mallctl("prof.reset", NULL, NULL,
+	    (void *)&lg_prof_sample_input, sizeof(size_t)), 0,
+	    "Unexpected mallctl failure while resetting profile data");
+	expect_zu_eq(lg_prof_sample_input, get_lg_prof_sample(),
+	    "Expected profile sample rate change");
+}
+
+TEST_BEGIN(test_prof_reset_basic) {
+	size_t lg_prof_sample_orig, lg_prof_sample_cur, lg_prof_sample_next;
+	size_t sz;
+	unsigned i;
+
+	test_skip_if(!config_prof);
+
+	sz = sizeof(size_t);
+	expect_d_eq(mallctl("opt.lg_prof_sample", (void *)&lg_prof_sample_orig,
+	    &sz, NULL, 0), 0,
+	    "Unexpected mallctl failure while reading profiling sample rate");
+	expect_zu_eq(lg_prof_sample_orig, 0,
+	    "Unexpected profiling sample rate");
+	lg_prof_sample_cur = get_lg_prof_sample();
+	expect_zu_eq(lg_prof_sample_orig, lg_prof_sample_cur,
+	    "Unexpected disagreement between \"opt.lg_prof_sample\" and "
+	    "\"prof.lg_sample\"");
+
+	/* Test simple resets. */
+	for (i = 0; i < 2; i++) {
+		expect_d_eq(mallctl("prof.reset", NULL, NULL, NULL, 0), 0,
+		    "Unexpected mallctl failure while resetting profile data");
+		lg_prof_sample_cur = get_lg_prof_sample();
+		expect_zu_eq(lg_prof_sample_orig, lg_prof_sample_cur,
+		    "Unexpected profile sample rate change");
+	}
+
+	/* Test resets with prof.lg_sample changes. */
+	lg_prof_sample_next = 1;
+	for (i = 0; i < 2; i++) {
+		do_prof_reset(lg_prof_sample_next);
+		lg_prof_sample_cur = get_lg_prof_sample();
+		expect_zu_eq(lg_prof_sample_cur, lg_prof_sample_next,
+		    "Expected profile sample rate change");
+		lg_prof_sample_next = lg_prof_sample_orig;
+	}
+
+	/* Make sure the test code restored prof.lg_sample. */
+	lg_prof_sample_cur = get_lg_prof_sample();
+	expect_zu_eq(lg_prof_sample_orig, lg_prof_sample_cur,
+	    "Unexpected disagreement between \"opt.lg_prof_sample\" and "
+	    "\"prof.lg_sample\"");
+}
+TEST_END
+
+TEST_BEGIN(test_prof_reset_cleanup) {
+	test_skip_if(!config_prof);
+
+	set_prof_active(true);
+
+	expect_zu_eq(prof_bt_count(), 0, "Expected 0 backtraces");
+	void *p = mallocx(1, 0);
+	expect_ptr_not_null(p, "Unexpected mallocx() failure");
+	expect_zu_eq(prof_bt_count(), 1, "Expected 1 backtrace");
+
+	prof_cnt_t cnt_all;
+	prof_cnt_all(&cnt_all);
+	expect_u64_eq(cnt_all.curobjs, 1, "Expected 1 allocation");
+
+	expect_d_eq(mallctl("prof.reset", NULL, NULL, NULL, 0), 0,
+	    "Unexpected error while resetting heap profile data");
+	prof_cnt_all(&cnt_all);
+	expect_u64_eq(cnt_all.curobjs, 0, "Expected 0 allocations");
+	expect_zu_eq(prof_bt_count(), 1, "Expected 1 backtrace");
+
+	dallocx(p, 0);
+	expect_zu_eq(prof_bt_count(), 0, "Expected 0 backtraces");
+
+	set_prof_active(false);
+}
+TEST_END
+
+#define NTHREADS		4
+#define NALLOCS_PER_THREAD	(1U << 13)
+#define OBJ_RING_BUF_COUNT	1531
+#define RESET_INTERVAL		(1U << 10)
+#define DUMP_INTERVAL		3677
+static void *
+thd_start(void *varg) {
+	unsigned thd_ind = *(unsigned *)varg;
+	unsigned i;
+	void *objs[OBJ_RING_BUF_COUNT];
+
+	memset(objs, 0, sizeof(objs));
+
+	for (i = 0; i < NALLOCS_PER_THREAD; i++) {
+		if (i % RESET_INTERVAL == 0) {
+			expect_d_eq(mallctl("prof.reset", NULL, NULL, NULL, 0),
+			    0, "Unexpected error while resetting heap profile "
+			    "data");
+		}
+
+		if (i % DUMP_INTERVAL == 0) {
+			expect_d_eq(mallctl("prof.dump", NULL, NULL, NULL, 0),
+			    0, "Unexpected error while dumping heap profile");
+		}
+
+		{
+			void **pp = &objs[i % OBJ_RING_BUF_COUNT];
+			if (*pp != NULL) {
+				dallocx(*pp, 0);
+				*pp = NULL;
+			}
+			*pp = btalloc(1, thd_ind*NALLOCS_PER_THREAD + i);
+			expect_ptr_not_null(*pp,
+			    "Unexpected btalloc() failure");
+		}
+	}
+
+	/* Clean up any remaining objects. */
+	for (i = 0; i < OBJ_RING_BUF_COUNT; i++) {
+		void **pp = &objs[i % OBJ_RING_BUF_COUNT];
+		if (*pp != NULL) {
+			dallocx(*pp, 0);
+			*pp = NULL;
+		}
+	}
+
+	return NULL;
+}
+
+TEST_BEGIN(test_prof_reset) {
+	size_t lg_prof_sample_orig;
+	thd_t thds[NTHREADS];
+	unsigned thd_args[NTHREADS];
+	unsigned i;
+	size_t bt_count, tdata_count;
+
+	test_skip_if(!config_prof);
+
+	bt_count = prof_bt_count();
+	expect_zu_eq(bt_count, 0,
+	    "Unexpected pre-existing tdata structures");
+	tdata_count = prof_tdata_count();
+
+	lg_prof_sample_orig = get_lg_prof_sample();
+	do_prof_reset(5);
+
+	set_prof_active(true);
+
+	for (i = 0; i < NTHREADS; i++) {
+		thd_args[i] = i;
+		thd_create(&thds[i], thd_start, (void *)&thd_args[i]);
+	}
+	for (i = 0; i < NTHREADS; i++) {
+		thd_join(thds[i], NULL);
+	}
+
+	expect_zu_eq(prof_bt_count(), bt_count,
+	    "Unexpected bactrace count change");
+	expect_zu_eq(prof_tdata_count(), tdata_count,
+	    "Unexpected remaining tdata structures");
+
+	set_prof_active(false);
+
+	do_prof_reset(lg_prof_sample_orig);
+}
+TEST_END
+#undef NTHREADS
+#undef NALLOCS_PER_THREAD
+#undef OBJ_RING_BUF_COUNT
+#undef RESET_INTERVAL
+#undef DUMP_INTERVAL
+
+/* Test sampling at the same allocation site across resets. */
+#define NITER 10
+TEST_BEGIN(test_xallocx) {
+	size_t lg_prof_sample_orig;
+	unsigned i;
+	void *ptrs[NITER];
+
+	test_skip_if(!config_prof);
+
+	lg_prof_sample_orig = get_lg_prof_sample();
+	set_prof_active(true);
+
+	/* Reset profiling. */
+	do_prof_reset(0);
+
+	for (i = 0; i < NITER; i++) {
+		void *p;
+		size_t sz, nsz;
+
+		/* Reset profiling. */
+		do_prof_reset(0);
+
+		/* Allocate small object (which will be promoted). */
+		p = ptrs[i] = mallocx(1, 0);
+		expect_ptr_not_null(p, "Unexpected mallocx() failure");
+
+		/* Reset profiling. */
+		do_prof_reset(0);
+
+		/* Perform successful xallocx(). */
+		sz = sallocx(p, 0);
+		expect_zu_eq(xallocx(p, sz, 0, 0), sz,
+		    "Unexpected xallocx() failure");
+
+		/* Perform unsuccessful xallocx(). */
+		nsz = nallocx(sz+1, 0);
+		expect_zu_eq(xallocx(p, nsz, 0, 0), sz,
+		    "Unexpected xallocx() success");
+	}
+
+	for (i = 0; i < NITER; i++) {
+		/* dallocx. */
+		dallocx(ptrs[i], 0);
+	}
+
+	set_prof_active(false);
+	do_prof_reset(lg_prof_sample_orig);
+}
+TEST_END
+#undef NITER
+
+int
+main(void) {
+	/* Intercept dumping prior to running any tests. */
+	prof_dump_open_file = prof_dump_open_file_intercept;
+
+	return test_no_reentrancy(
+	    test_prof_reset_basic,
+	    test_prof_reset_cleanup,
+	    test_prof_reset,
+	    test_xallocx);
+}
diff --git a/deps/jemalloc/test/unit/prof_reset.sh b/deps/jemalloc/test/unit/prof_reset.sh
new file mode 100644
index 0000000..daefeb7
--- /dev/null
+++ b/deps/jemalloc/test/unit/prof_reset.sh
@@ -0,0 +1,5 @@
+#!/bin/sh
+
+if [ "x${enable_prof}" = "x1" ] ; then
+  export MALLOC_CONF="prof:true,prof_active:false,lg_prof_sample:0,prof_recent_alloc_max:0"
+fi
diff --git a/deps/jemalloc/test/unit/prof_stats.c b/deps/jemalloc/test/unit/prof_stats.c
new file mode 100644
index 0000000..c88c4ae
--- /dev/null
+++ b/deps/jemalloc/test/unit/prof_stats.c
@@ -0,0 +1,151 @@
+#include "test/jemalloc_test.h"
+
+#define N_PTRS 3
+
+static void
+test_combinations(szind_t ind, size_t sizes_array[N_PTRS],
+    int flags_array[N_PTRS]) {
+#define MALLCTL_STR_LEN 64
+	assert(opt_prof && opt_prof_stats);
+
+	char mallctl_live_str[MALLCTL_STR_LEN];
+	char mallctl_accum_str[MALLCTL_STR_LEN];
+	if (ind < SC_NBINS) {
+		malloc_snprintf(mallctl_live_str, MALLCTL_STR_LEN,
+		    "prof.stats.bins.%u.live", (unsigned)ind);
+		malloc_snprintf(mallctl_accum_str, MALLCTL_STR_LEN,
+		    "prof.stats.bins.%u.accum", (unsigned)ind);
+	} else {
+		malloc_snprintf(mallctl_live_str, MALLCTL_STR_LEN,
+		    "prof.stats.lextents.%u.live", (unsigned)(ind - SC_NBINS));
+		malloc_snprintf(mallctl_accum_str, MALLCTL_STR_LEN,
+		    "prof.stats.lextents.%u.accum", (unsigned)(ind - SC_NBINS));
+	}
+
+	size_t stats_len = 2 * sizeof(uint64_t);
+
+	uint64_t live_stats_orig[2];
+	assert_d_eq(mallctl(mallctl_live_str, &live_stats_orig, &stats_len,
+	    NULL, 0), 0, "");
+	uint64_t accum_stats_orig[2];
+	assert_d_eq(mallctl(mallctl_accum_str, &accum_stats_orig, &stats_len,
+	    NULL, 0), 0, "");
+
+	void *ptrs[N_PTRS];
+
+	uint64_t live_req_sum = 0;
+	uint64_t live_count = 0;
+	uint64_t accum_req_sum = 0;
+	uint64_t accum_count = 0;
+
+	for (size_t i = 0; i < N_PTRS; ++i) {
+		size_t sz = sizes_array[i];
+		int flags = flags_array[i];
+		void *p = mallocx(sz, flags);
+		assert_ptr_not_null(p, "malloc() failed");
+		assert(TEST_MALLOC_SIZE(p) == sz_index2size(ind));
+		ptrs[i] = p;
+		live_req_sum += sz;
+		live_count++;
+		accum_req_sum += sz;
+		accum_count++;
+		uint64_t live_stats[2];
+		assert_d_eq(mallctl(mallctl_live_str, &live_stats, &stats_len,
+		    NULL, 0), 0, "");
+		expect_u64_eq(live_stats[0] - live_stats_orig[0],
+		    live_req_sum, "");
+		expect_u64_eq(live_stats[1] - live_stats_orig[1],
+		    live_count, "");
+		uint64_t accum_stats[2];
+		assert_d_eq(mallctl(mallctl_accum_str, &accum_stats, &stats_len,
+		    NULL, 0), 0, "");
+		expect_u64_eq(accum_stats[0] - accum_stats_orig[0],
+		    accum_req_sum, "");
+		expect_u64_eq(accum_stats[1] - accum_stats_orig[1],
+		    accum_count, "");
+	}
+
+	for (size_t i = 0; i < N_PTRS; ++i) {
+		size_t sz = sizes_array[i];
+		int flags = flags_array[i];
+		sdallocx(ptrs[i], sz, flags);
+		live_req_sum -= sz;
+		live_count--;
+		uint64_t live_stats[2];
+		assert_d_eq(mallctl(mallctl_live_str, &live_stats, &stats_len,
+		    NULL, 0), 0, "");
+		expect_u64_eq(live_stats[0] - live_stats_orig[0],
+		    live_req_sum, "");
+		expect_u64_eq(live_stats[1] - live_stats_orig[1],
+		    live_count, "");
+		uint64_t accum_stats[2];
+		assert_d_eq(mallctl(mallctl_accum_str, &accum_stats, &stats_len,
+		    NULL, 0), 0, "");
+		expect_u64_eq(accum_stats[0] - accum_stats_orig[0],
+		    accum_req_sum, "");
+		expect_u64_eq(accum_stats[1] - accum_stats_orig[1],
+		    accum_count, "");
+	}
+#undef MALLCTL_STR_LEN
+}
+
+static void
+test_szind_wrapper(szind_t ind) {
+	size_t sizes_array[N_PTRS];
+	int flags_array[N_PTRS];
+	for (size_t i = 0, sz = sz_index2size(ind) - N_PTRS; i < N_PTRS;
+	    ++i, ++sz) {
+		sizes_array[i] = sz;
+		flags_array[i] = 0;
+	}
+	test_combinations(ind, sizes_array, flags_array);
+}
+
+TEST_BEGIN(test_prof_stats) {
+	test_skip_if(!config_prof);
+	test_szind_wrapper(0);
+	test_szind_wrapper(1);
+	test_szind_wrapper(2);
+	test_szind_wrapper(SC_NBINS);
+	test_szind_wrapper(SC_NBINS + 1);
+	test_szind_wrapper(SC_NBINS + 2);
+}
+TEST_END
+
+static void
+test_szind_aligned_wrapper(szind_t ind, unsigned lg_align) {
+	size_t sizes_array[N_PTRS];
+	int flags_array[N_PTRS];
+	int flags = MALLOCX_LG_ALIGN(lg_align);
+	for (size_t i = 0, sz = sz_index2size(ind) - N_PTRS; i < N_PTRS;
+	    ++i, ++sz) {
+		sizes_array[i] = sz;
+		flags_array[i] = flags;
+	}
+	test_combinations(
+	    sz_size2index(sz_sa2u(sz_index2size(ind), 1 << lg_align)),
+	    sizes_array, flags_array);
+}
+
+TEST_BEGIN(test_prof_stats_aligned) {
+	test_skip_if(!config_prof);
+	for (szind_t ind = 0; ind < 10; ++ind) {
+		for (unsigned lg_align = 0; lg_align < 10; ++lg_align) {
+			test_szind_aligned_wrapper(ind, lg_align);
+		}
+	}
+	for (szind_t ind = SC_NBINS - 5; ind < SC_NBINS + 5; ++ind) {
+		for (unsigned lg_align = SC_LG_LARGE_MINCLASS - 5;
+		    lg_align < SC_LG_LARGE_MINCLASS + 5; ++lg_align) {
+			test_szind_aligned_wrapper(ind, lg_align);
+		}
+	}
+}
+TEST_END
+
+int
+main(void) {
+	return test(
+	    test_prof_stats,
+	    test_prof_stats_aligned);
+}
diff --git a/deps/jemalloc/test/unit/prof_stats.sh b/deps/jemalloc/test/unit/prof_stats.sh
new file mode 100644
index 0000000..f3c819b
--- /dev/null
+++ b/deps/jemalloc/test/unit/prof_stats.sh
@@ -0,0 +1,5 @@
+#!/bin/sh
+
+if [ "x${enable_prof}" = "x1" ] ; then
+  export MALLOC_CONF="prof:true,prof_active:true,lg_prof_sample:0,prof_stats:true"
+fi
diff --git a/deps/jemalloc/test/unit/prof_sys_thread_name.c b/deps/jemalloc/test/unit/prof_sys_thread_name.c
new file mode 100644
index 0000000..affc788
--- /dev/null
+++ b/deps/jemalloc/test/unit/prof_sys_thread_name.c
@@ -0,0 +1,77 @@
+#include "test/jemalloc_test.h"
+
+#include "jemalloc/internal/prof_sys.h"
+
+static const char *test_thread_name = "test_name";
+
+static int
+test_prof_sys_thread_name_read_error(char *buf, size_t limit) {
+	return ENOSYS;
+}
+
+static int
+test_prof_sys_thread_name_read(char *buf, size_t limit) {
+	assert(strlen(test_thread_name) < limit);
+	strncpy(buf, test_thread_name, limit);
+	return 0;
+}
+
+static int
+test_prof_sys_thread_name_read_clear(char *buf, size_t limit) {
+	assert(limit > 0);
+	buf[0] = '\0';
+	return 0;
+}
+
+TEST_BEGIN(test_prof_sys_thread_name) {
+	test_skip_if(!config_prof);
+
+	bool oldval;
+	size_t sz = sizeof(oldval);
+	assert_d_eq(mallctl("opt.prof_sys_thread_name", &oldval, &sz, NULL, 0),
+	    0, "mallctl failed");
+	assert_true(oldval, "option was not set correctly");
+
+	const char *thread_name;
+	sz = sizeof(thread_name);
+	assert_d_eq(mallctl("thread.prof.name", &thread_name, &sz, NULL, 0), 0,
+	    "mallctl read for thread name should not fail");
+	expect_str_eq(thread_name, "", "Initial thread name should be empty");
+
+	thread_name = test_thread_name;
+	assert_d_eq(mallctl("thread.prof.name", NULL, NULL, &thread_name, sz),
+	    ENOENT, "mallctl write for thread name should fail");
+	assert_ptr_eq(thread_name, test_thread_name,
+	    "Thread name should not be touched");
+
+	prof_sys_thread_name_read = test_prof_sys_thread_name_read_error;
+	void *p = malloc(1);
+	free(p);
+	assert_d_eq(mallctl("thread.prof.name", &thread_name, &sz, NULL, 0), 0,
+	    "mallctl read for thread name should not fail");
+	assert_str_eq(thread_name, "",
+	    "Thread name should stay the same if the system call fails");
+
+	prof_sys_thread_name_read = test_prof_sys_thread_name_read;
+	p = malloc(1);
+	free(p);
+	assert_d_eq(mallctl("thread.prof.name", &thread_name, &sz, NULL, 0), 0,
+	    "mallctl read for thread name should not fail");
+	assert_str_eq(thread_name, test_thread_name,
+	    "Thread name should be changed if the system call succeeds");
+
+	prof_sys_thread_name_read = test_prof_sys_thread_name_read_clear;
+	p = malloc(1);
+	free(p);
+	assert_d_eq(mallctl("thread.prof.name", &thread_name, &sz, NULL, 0), 0,
+	    "mallctl read for thread name should not fail");
+	expect_str_eq(thread_name, "", "Thread name should be updated if the "
+	    "system call returns a different name");
+}
+TEST_END
+
+int
+main(void) {
+	return test(
+	    test_prof_sys_thread_name);
+}
diff --git a/deps/jemalloc/test/unit/prof_sys_thread_name.sh b/deps/jemalloc/test/unit/prof_sys_thread_name.sh
new file mode 100644
index 0000000..1f02a8a
--- /dev/null
+++ b/deps/jemalloc/test/unit/prof_sys_thread_name.sh
@@ -0,0 +1,5 @@
+#!/bin/sh
+
+if [ "x${enable_prof}" = "x1" ] ; then
+  export MALLOC_CONF="prof:true,prof_active:true,lg_prof_sample:0,prof_sys_thread_name:true"
+fi
diff --git a/deps/jemalloc/test/unit/prof_tctx.c b/deps/jemalloc/test/unit/prof_tctx.c
new file mode 100644
index 0000000..e0efdc3
--- /dev/null
+++ b/deps/jemalloc/test/unit/prof_tctx.c
@@ -0,0 +1,48 @@
+#include "test/jemalloc_test.h"
+
+#include "jemalloc/internal/prof_data.h"
+
+TEST_BEGIN(test_prof_realloc) {
+	tsd_t *tsd;
+	int flags;
+	void *p, *q;
+	prof_info_t prof_info_p, prof_info_q;
+	prof_cnt_t cnt_0, cnt_1, cnt_2, cnt_3;
+
+	test_skip_if(!config_prof);
+
+	tsd = tsd_fetch();
+	flags = MALLOCX_TCACHE_NONE;
+
+	prof_cnt_all(&cnt_0);
+	p = mallocx(1024, flags);
+	expect_ptr_not_null(p, "Unexpected mallocx() failure");
+	prof_info_get(tsd, p, NULL, &prof_info_p);
+	expect_ptr_ne(prof_info_p.alloc_tctx, (prof_tctx_t *)(uintptr_t)1U,
+	    "Expected valid tctx");
+	prof_cnt_all(&cnt_1);
+	expect_u64_eq(cnt_0.curobjs + 1, cnt_1.curobjs,
+	    "Allocation should have increased sample size");
+
+	q = rallocx(p, 2048, flags);
+	expect_ptr_ne(p, q, "Expected move");
+	expect_ptr_not_null(p, "Unexpected rmallocx() failure");
+	prof_info_get(tsd, q, NULL, &prof_info_q);
+	expect_ptr_ne(prof_info_q.alloc_tctx, (prof_tctx_t *)(uintptr_t)1U,
+	    "Expected valid tctx");
+	prof_cnt_all(&cnt_2);
+	expect_u64_eq(cnt_1.curobjs, cnt_2.curobjs,
+	    "Reallocation should not have changed sample size");
+
+	dallocx(q, flags);
+	prof_cnt_all(&cnt_3);
+	expect_u64_eq(cnt_0.curobjs, cnt_3.curobjs,
+	    "Sample size should have returned to base level");
+}
+TEST_END
+
+int
+main(void) {
+	return test_no_reentrancy(
+	    test_prof_realloc);
+}
diff --git a/deps/jemalloc/test/unit/prof_tctx.sh b/deps/jemalloc/test/unit/prof_tctx.sh
new file mode 100644
index 0000000..485f9bf
--- /dev/null
+++ b/deps/jemalloc/test/unit/prof_tctx.sh
@@ -0,0 +1,5 @@
+#!/bin/sh
+
+if [ "x${enable_prof}" = "x1" ] ; then
+  export MALLOC_CONF="prof:true,prof_active:true,lg_prof_sample:0"
+fi
diff --git a/deps/jemalloc/test/unit/prof_thread_name.c b/deps/jemalloc/test/unit/prof_thread_name.c
new file mode 100644
index 0000000..3c4614f
--- /dev/null
+++ b/deps/jemalloc/test/unit/prof_thread_name.c
@@ -0,0 +1,122 @@
+#include "test/jemalloc_test.h"
+
+static void
+mallctl_thread_name_get_impl(const char *thread_name_expected, const char *func,
+    int line) {
+	const char *thread_name_old;
+	size_t sz;
+
+	sz = sizeof(thread_name_old);
+	expect_d_eq(mallctl("thread.prof.name", (void *)&thread_name_old, &sz,
+	    NULL, 0), 0,
+	    "%s():%d: Unexpected mallctl failure reading thread.prof.name",
+	    func, line);
+	expect_str_eq(thread_name_old, thread_name_expected,
+	    "%s():%d: Unexpected thread.prof.name value", func, line);
+}
+#define mallctl_thread_name_get(a)					\
+	mallctl_thread_name_get_impl(a, __func__, __LINE__)
+
+static void
+mallctl_thread_name_set_impl(const char *thread_name, const char *func,
+    int line) {
+	expect_d_eq(mallctl("thread.prof.name", NULL, NULL,
+	    (void *)&thread_name, sizeof(thread_name)), 0,
+	    "%s():%d: Unexpected mallctl failure writing thread.prof.name",
+	    func, line);
+	mallctl_thread_name_get_impl(thread_name, func, line);
+}
+#define mallctl_thread_name_set(a)					\
+	mallctl_thread_name_set_impl(a, __func__, __LINE__)
+
+TEST_BEGIN(test_prof_thread_name_validation) {
+	const char *thread_name;
+
+	test_skip_if(!config_prof);
+	test_skip_if(opt_prof_sys_thread_name);
+
+	mallctl_thread_name_get("");
+	mallctl_thread_name_set("hi there");
+
+	/* NULL input shouldn't be allowed. */
+	thread_name = NULL;
+	expect_d_eq(mallctl("thread.prof.name", NULL, NULL,
+	    (void *)&thread_name, sizeof(thread_name)), EFAULT,
+	    "Unexpected mallctl result writing \"%s\" to thread.prof.name",
+	    thread_name);
+
+	/* '\n' shouldn't be allowed. */
+	thread_name = "hi\nthere";
+	expect_d_eq(mallctl("thread.prof.name", NULL, NULL,
+	    (void *)&thread_name, sizeof(thread_name)), EFAULT,
+	    "Unexpected mallctl result writing \"%s\" to thread.prof.name",
+	    thread_name);
+
+	/* Simultaneous read/write shouldn't be allowed. */
+	{
+		const char *thread_name_old;
+		size_t sz;
+
+		sz = sizeof(thread_name_old);
+		expect_d_eq(mallctl("thread.prof.name",
+		    (void *)&thread_name_old, &sz, (void *)&thread_name,
+		    sizeof(thread_name)), EPERM,
+		    "Unexpected mallctl result writing \"%s\" to "
+		    "thread.prof.name", thread_name);
+	}
+
+	mallctl_thread_name_set("");
+}
+TEST_END
+
+#define NTHREADS	4
+#define NRESET		25
+static void *
+thd_start(void *varg) {
+	unsigned thd_ind = *(unsigned *)varg;
+	char thread_name[16] = "";
+	unsigned i;
+
+	malloc_snprintf(thread_name, sizeof(thread_name), "thread %u", thd_ind);
+
+	mallctl_thread_name_get("");
+	mallctl_thread_name_set(thread_name);
+
+	for (i = 0; i < NRESET; i++) {
+		expect_d_eq(mallctl("prof.reset", NULL, NULL, NULL, 0), 0,
+		    "Unexpected error while resetting heap profile data");
+		mallctl_thread_name_get(thread_name);
+	}
+
+	mallctl_thread_name_set(thread_name);
+	mallctl_thread_name_set("");
+
+	return NULL;
+}
+
+TEST_BEGIN(test_prof_thread_name_threaded) {
+	test_skip_if(!config_prof);
+	test_skip_if(opt_prof_sys_thread_name);
+
+	thd_t thds[NTHREADS];
+	unsigned thd_args[NTHREADS];
+	unsigned i;
+
+	for (i = 0; i < NTHREADS; i++) {
+		thd_args[i] = i;
+		thd_create(&thds[i], thd_start, (void *)&thd_args[i]);
+	}
+	for (i = 0; i < NTHREADS; i++) {
+		thd_join(thds[i], NULL);
+	}
+}
+TEST_END
+#undef NTHREADS
+#undef NRESET
+
+int
+main(void) {
+	return test(
+	    test_prof_thread_name_validation,
+	    test_prof_thread_name_threaded);
+}
diff --git a/deps/jemalloc/test/unit/prof_thread_name.sh b/deps/jemalloc/test/unit/prof_thread_name.sh
new file mode 100644
index 0000000..298c105
--- /dev/null
+++ b/deps/jemalloc/test/unit/prof_thread_name.sh
@@ -0,0 +1,5 @@
+#!/bin/sh
+
+if [ "x${enable_prof}" = "x1" ] ; then
+  export MALLOC_CONF="prof:true,prof_active:false"
+fi
diff --git a/deps/jemalloc/test/unit/psset.c b/deps/jemalloc/test/unit/psset.c
new file mode 100644
index 0000000..6ff7201
--- /dev/null
+++ b/deps/jemalloc/test/unit/psset.c
@@ -0,0 +1,748 @@
+#include "test/jemalloc_test.h"
+
+#include "jemalloc/internal/psset.h"
+
+#define PAGESLAB_ADDR ((void *)(1234 * HUGEPAGE))
+#define PAGESLAB_AGE 5678
+
+#define ALLOC_ARENA_IND 111
+#define ALLOC_ESN 222
+
+static void
+edata_init_test(edata_t *edata) {
+	memset(edata, 0, sizeof(*edata));
+	edata_arena_ind_set(edata, ALLOC_ARENA_IND);
+	edata_esn_set(edata, ALLOC_ESN);
+}
+
+static void
+test_psset_fake_purge(hpdata_t *ps) {
+	hpdata_purge_state_t purge_state;
+	hpdata_alloc_allowed_set(ps, false);
+	hpdata_purge_begin(ps, &purge_state);
+	void *addr;
+	size_t size;
+	while (hpdata_purge_next(ps, &purge_state, &addr, &size)) {
+	}
+	hpdata_purge_end(ps, &purge_state);
+	hpdata_alloc_allowed_set(ps, true);
+}
+
+static void
+test_psset_alloc_new(psset_t *psset, hpdata_t *ps, edata_t *r_edata,
+    size_t size) {
+	hpdata_assert_empty(ps);
+
+	test_psset_fake_purge(ps);
+
+	psset_insert(psset, ps);
+	psset_update_begin(psset, ps);
+
+        void *addr = hpdata_reserve_alloc(ps, size);
+        edata_init(r_edata, edata_arena_ind_get(r_edata), addr, size,
+	    /* slab */ false, SC_NSIZES, /* sn */ 0, extent_state_active,
+            /* zeroed */ false, /* committed */ true, EXTENT_PAI_HPA,
+            EXTENT_NOT_HEAD);
+        edata_ps_set(r_edata, ps);
+	psset_update_end(psset, ps);
+}
+
+static bool
+test_psset_alloc_reuse(psset_t *psset, edata_t *r_edata, size_t size) {
+	hpdata_t *ps = psset_pick_alloc(psset, size);
+	if (ps == NULL) {
+		return true;
+	}
+	psset_update_begin(psset, ps);
+	void *addr = hpdata_reserve_alloc(ps, size);
+	edata_init(r_edata, edata_arena_ind_get(r_edata), addr, size,
+	    /* slab */ false, SC_NSIZES, /* sn */ 0, extent_state_active,
+	    /* zeroed */ false, /* committed */ true, EXTENT_PAI_HPA,
+	    EXTENT_NOT_HEAD);
+	edata_ps_set(r_edata, ps);
+	psset_update_end(psset, ps);
+	return false;
+}
+
+static hpdata_t *
+test_psset_dalloc(psset_t *psset, edata_t *edata) {
+	hpdata_t *ps = edata_ps_get(edata);
+	psset_update_begin(psset, ps);
+	hpdata_unreserve(ps, edata_addr_get(edata), edata_size_get(edata));
+	psset_update_end(psset, ps);
+	if (hpdata_empty(ps)) {
+		psset_remove(psset, ps);
+		return ps;
+	} else {
+		return NULL;
+	}
+}
+
+static void
+edata_expect(edata_t *edata, size_t page_offset, size_t page_cnt) {
+	/*
+	 * Note that allocations should get the arena ind of their home
+	 * arena, *not* the arena ind of the pageslab allocator.
+	 */
+	expect_u_eq(ALLOC_ARENA_IND, edata_arena_ind_get(edata),
+	    "Arena ind changed");
+	expect_ptr_eq(
+	    (void *)((uintptr_t)PAGESLAB_ADDR + (page_offset << LG_PAGE)),
+	    edata_addr_get(edata), "Didn't allocate in order");
+	expect_zu_eq(page_cnt << LG_PAGE, edata_size_get(edata), "");
+	expect_false(edata_slab_get(edata), "");
+	expect_u_eq(SC_NSIZES, edata_szind_get_maybe_invalid(edata),
+	    "");
+	expect_u64_eq(0, edata_sn_get(edata), "");
+	expect_d_eq(edata_state_get(edata), extent_state_active, "");
+	expect_false(edata_zeroed_get(edata), "");
+	expect_true(edata_committed_get(edata), "");
+	expect_d_eq(EXTENT_PAI_HPA, edata_pai_get(edata), "");
+	expect_false(edata_is_head_get(edata), "");
+}
+
+TEST_BEGIN(test_empty) {
+	bool err;
+	hpdata_t pageslab;
+	hpdata_init(&pageslab, PAGESLAB_ADDR, PAGESLAB_AGE);
+
+	edata_t alloc;
+	edata_init_test(&alloc);
+
+	psset_t psset;
+	psset_init(&psset);
+
+	/* Empty psset should return fail allocations. */
+	err = test_psset_alloc_reuse(&psset, &alloc, PAGE);
+	expect_true(err, "Empty psset succeeded in an allocation.");
+}
+TEST_END
+
+TEST_BEGIN(test_fill) {
+	bool err;
+
+	hpdata_t pageslab;
+	hpdata_init(&pageslab, PAGESLAB_ADDR, PAGESLAB_AGE);
+
+	edata_t alloc[HUGEPAGE_PAGES];
+
+	psset_t psset;
+	psset_init(&psset);
+
+	edata_init_test(&alloc[0]);
+	test_psset_alloc_new(&psset, &pageslab, &alloc[0], PAGE);
+	for (size_t i = 1; i < HUGEPAGE_PAGES; i++) {
+		edata_init_test(&alloc[i]);
+		err = test_psset_alloc_reuse(&psset, &alloc[i], PAGE);
+		expect_false(err, "Nonempty psset failed page allocation.");
+	}
+
+	for (size_t i = 0; i < HUGEPAGE_PAGES; i++) {
+		edata_t *edata = &alloc[i];
+		edata_expect(edata, i, 1);
+	}
+
+	/* The pageslab, and thus psset, should now have no allocations. */
+	edata_t extra_alloc;
+	edata_init_test(&extra_alloc);
+	err = test_psset_alloc_reuse(&psset, &extra_alloc, PAGE);
+	expect_true(err, "Alloc succeeded even though psset should be empty");
+}
+TEST_END
+
+TEST_BEGIN(test_reuse) {
+	bool err;
+	hpdata_t *ps;
+
+	hpdata_t pageslab;
+	hpdata_init(&pageslab, PAGESLAB_ADDR, PAGESLAB_AGE);
+
+	edata_t alloc[HUGEPAGE_PAGES];
+
+	psset_t psset;
+	psset_init(&psset);
+
+	edata_init_test(&alloc[0]);
+	test_psset_alloc_new(&psset, &pageslab, &alloc[0], PAGE);
+	for (size_t i = 1; i < HUGEPAGE_PAGES; i++) {
+		edata_init_test(&alloc[i]);
+		err = test_psset_alloc_reuse(&psset, &alloc[i], PAGE);
+		expect_false(err, "Nonempty psset failed page allocation.");
+	}
+
+	/* Free odd indices. */
+	for (size_t i = 0; i < HUGEPAGE_PAGES; i ++) {
+		if (i % 2 == 0) {
+			continue;
+		}
+		ps = test_psset_dalloc(&psset, &alloc[i]);
+		expect_ptr_null(ps, "Nonempty pageslab evicted");
+	}
+	/* Realloc into them. */
+	for (size_t i = 0; i < HUGEPAGE_PAGES; i++) {
+		if (i % 2 == 0) {
+			continue;
+		}
+		err = test_psset_alloc_reuse(&psset, &alloc[i], PAGE);
+		expect_false(err, "Nonempty psset failed page allocation.");
+		edata_expect(&alloc[i], i, 1);
+	}
+	/* Now, free the pages at indices 0 or 1 mod 2. */
+	for (size_t i = 0; i < HUGEPAGE_PAGES; i++) {
+		if (i % 4 > 1) {
+			continue;
+		}
+		ps = test_psset_dalloc(&psset, &alloc[i]);
+		expect_ptr_null(ps, "Nonempty pageslab evicted");
+	}
+	/* And realloc 2-page allocations into them. */
+	for (size_t i = 0; i < HUGEPAGE_PAGES; i++) {
+		if (i % 4 != 0) {
+			continue;
+		}
+		err = test_psset_alloc_reuse(&psset, &alloc[i], 2 * PAGE);
+		expect_false(err, "Nonempty psset failed page allocation.");
+		edata_expect(&alloc[i], i, 2);
+	}
+	/* Free all the 2-page allocations. */
+	for (size_t i = 0; i < HUGEPAGE_PAGES; i++) {
+		if (i % 4 != 0) {
+			continue;
+		}
+		ps = test_psset_dalloc(&psset, &alloc[i]);
+		expect_ptr_null(ps, "Nonempty pageslab evicted");
+	}
+	/*
+	 * Free up a 1-page hole next to a 2-page hole, but somewhere in the
+	 * middle of the pageslab.  Index 11 should be right before such a hole
+	 * (since 12 % 4 == 0).
+	 */
+	size_t index_of_3 = 11;
+	ps = test_psset_dalloc(&psset, &alloc[index_of_3]);
+	expect_ptr_null(ps, "Nonempty pageslab evicted");
+	err = test_psset_alloc_reuse(&psset, &alloc[index_of_3], 3 * PAGE);
+	expect_false(err, "Should have been able to find alloc.");
+	edata_expect(&alloc[index_of_3], index_of_3, 3);
+
+	/*
+	 * Free up a 4-page hole at the end.  Recall that the pages at offsets 0
+	 * and 1 mod 4 were freed above, so we just have to free the last
+	 * allocations.
+	 */
+	ps = test_psset_dalloc(&psset, &alloc[HUGEPAGE_PAGES - 1]);
+	expect_ptr_null(ps, "Nonempty pageslab evicted");
+	ps = test_psset_dalloc(&psset, &alloc[HUGEPAGE_PAGES - 2]);
+	expect_ptr_null(ps, "Nonempty pageslab evicted");
+
+	/* Make sure we can satisfy an allocation at the very end of a slab. */
+	size_t index_of_4 = HUGEPAGE_PAGES - 4;
+	err = test_psset_alloc_reuse(&psset, &alloc[index_of_4], 4 * PAGE);
+	expect_false(err, "Should have been able to find alloc.");
+	edata_expect(&alloc[index_of_4], index_of_4, 4);
+}
+TEST_END
+
+TEST_BEGIN(test_evict) {
+	bool err;
+	hpdata_t *ps;
+
+	hpdata_t pageslab;
+	hpdata_init(&pageslab, PAGESLAB_ADDR, PAGESLAB_AGE);
+
+	edata_t alloc[HUGEPAGE_PAGES];
+
+	psset_t psset;
+	psset_init(&psset);
+
+	/* Alloc the whole slab. */
+	edata_init_test(&alloc[0]);
+	test_psset_alloc_new(&psset, &pageslab, &alloc[0], PAGE);
+	for (size_t i = 1; i < HUGEPAGE_PAGES; i++) {
+		edata_init_test(&alloc[i]);
+		err = test_psset_alloc_reuse(&psset, &alloc[i], PAGE);
+		expect_false(err, "Unxpected allocation failure");
+	}
+
+	/* Dealloc the whole slab, going forwards. */
+	for (size_t i = 0; i < HUGEPAGE_PAGES - 1; i++) {
+		ps = test_psset_dalloc(&psset, &alloc[i]);
+		expect_ptr_null(ps, "Nonempty pageslab evicted");
+	}
+	ps = test_psset_dalloc(&psset, &alloc[HUGEPAGE_PAGES - 1]);
+	expect_ptr_eq(&pageslab, ps, "Empty pageslab not evicted.");
+
+	err = test_psset_alloc_reuse(&psset, &alloc[0], PAGE);
+	expect_true(err, "psset should be empty.");
+}
+TEST_END
+
+TEST_BEGIN(test_multi_pageslab) {
+	bool err;
+	hpdata_t *ps;
+
+	hpdata_t pageslab[2];
+	hpdata_init(&pageslab[0], PAGESLAB_ADDR, PAGESLAB_AGE);
+	hpdata_init(&pageslab[1],
+	    (void *)((uintptr_t)PAGESLAB_ADDR + HUGEPAGE),
+	    PAGESLAB_AGE + 1);
+
+	edata_t alloc[2][HUGEPAGE_PAGES];
+
+	psset_t psset;
+	psset_init(&psset);
+
+	/* Insert both slabs. */
+	edata_init_test(&alloc[0][0]);
+	test_psset_alloc_new(&psset, &pageslab[0], &alloc[0][0], PAGE);
+	edata_init_test(&alloc[1][0]);
+	test_psset_alloc_new(&psset, &pageslab[1], &alloc[1][0], PAGE);
+
+	/* Fill them both up; make sure we do so in first-fit order. */
+	for (size_t i = 0; i < 2; i++) {
+		for (size_t j = 1; j < HUGEPAGE_PAGES; j++) {
+			edata_init_test(&alloc[i][j]);
+			err = test_psset_alloc_reuse(&psset, &alloc[i][j], PAGE);
+			expect_false(err,
+			    "Nonempty psset failed page allocation.");
+			assert_ptr_eq(&pageslab[i], edata_ps_get(&alloc[i][j]),
+			    "Didn't pick pageslabs in first-fit");
+		}
+	}
+
+	/*
+	 * Free up a 2-page hole in the earlier slab, and a 1-page one in the
+	 * later one.  We should still pick the later one.
+	 */
+	ps = test_psset_dalloc(&psset, &alloc[0][0]);
+	expect_ptr_null(ps, "Unexpected eviction");
+	ps = test_psset_dalloc(&psset, &alloc[0][1]);
+	expect_ptr_null(ps, "Unexpected eviction");
+	ps = test_psset_dalloc(&psset, &alloc[1][0]);
+	expect_ptr_null(ps, "Unexpected eviction");
+	err = test_psset_alloc_reuse(&psset, &alloc[0][0], PAGE);
+	expect_ptr_eq(&pageslab[1], edata_ps_get(&alloc[0][0]),
+	    "Should have picked the fuller pageslab");
+
+	/*
+	 * Now both slabs have 1-page holes. Free up a second one in the later
+	 * slab.
+	 */
+	ps = test_psset_dalloc(&psset, &alloc[1][1]);
+	expect_ptr_null(ps, "Unexpected eviction");
+
+	/*
+	 * We should be able to allocate a 2-page object, even though an earlier
+	 * size class is nonempty.
+	 */
+	err = test_psset_alloc_reuse(&psset, &alloc[1][0], 2 * PAGE);
+	expect_false(err, "Allocation should have succeeded");
+}
+TEST_END
+
+static void
+stats_expect_empty(psset_bin_stats_t *stats) {
+	assert_zu_eq(0, stats->npageslabs,
+	    "Supposedly empty bin had positive npageslabs");
+	expect_zu_eq(0, stats->nactive, "Unexpected nonempty bin"
+	    "Supposedly empty bin had positive nactive");
+}
+
+static void
+stats_expect(psset_t *psset, size_t nactive) {
+	if (nactive == HUGEPAGE_PAGES) {
+		expect_zu_eq(1, psset->stats.full_slabs[0].npageslabs,
+		    "Expected a full slab");
+		expect_zu_eq(HUGEPAGE_PAGES,
+		    psset->stats.full_slabs[0].nactive,
+		    "Should have exactly filled the bin");
+	} else {
+		stats_expect_empty(&psset->stats.full_slabs[0]);
+	}
+	size_t ninactive = HUGEPAGE_PAGES - nactive;
+	pszind_t nonempty_pind = PSSET_NPSIZES;
+	if (ninactive != 0 && ninactive < HUGEPAGE_PAGES) {
+		nonempty_pind = sz_psz2ind(sz_psz_quantize_floor(
+		    ninactive << LG_PAGE));
+	}
+	for (pszind_t i = 0; i < PSSET_NPSIZES; i++) {
+		if (i == nonempty_pind) {
+			assert_zu_eq(1,
+			    psset->stats.nonfull_slabs[i][0].npageslabs,
+			    "Should have found a slab");
+			expect_zu_eq(nactive,
+			    psset->stats.nonfull_slabs[i][0].nactive,
+			    "Mismatch in active pages");
+		} else {
+			stats_expect_empty(&psset->stats.nonfull_slabs[i][0]);
+		}
+	}
+	expect_zu_eq(nactive, psset_nactive(psset), "");
+}
+
+TEST_BEGIN(test_stats) {
+	bool err;
+
+	hpdata_t pageslab;
+	hpdata_init(&pageslab, PAGESLAB_ADDR, PAGESLAB_AGE);
+
+	edata_t alloc[HUGEPAGE_PAGES];
+
+	psset_t psset;
+	psset_init(&psset);
+	stats_expect(&psset, 0);
+
+	edata_init_test(&alloc[0]);
+	test_psset_alloc_new(&psset, &pageslab, &alloc[0], PAGE);
+	for (size_t i = 1; i < HUGEPAGE_PAGES; i++) {
+		stats_expect(&psset, i);
+		edata_init_test(&alloc[i]);
+		err = test_psset_alloc_reuse(&psset, &alloc[i], PAGE);
+		expect_false(err, "Nonempty psset failed page allocation.");
+	}
+	stats_expect(&psset, HUGEPAGE_PAGES);
+	hpdata_t *ps;
+	for (ssize_t i = HUGEPAGE_PAGES - 1; i >= 0; i--) {
+		ps = test_psset_dalloc(&psset, &alloc[i]);
+		expect_true((ps == NULL) == (i != 0),
+		    "test_psset_dalloc should only evict a slab on the last "
+		    "free");
+		stats_expect(&psset, i);
+	}
+
+	test_psset_alloc_new(&psset, &pageslab, &alloc[0], PAGE);
+	stats_expect(&psset, 1);
+	psset_update_begin(&psset, &pageslab);
+	stats_expect(&psset, 0);
+	psset_update_end(&psset, &pageslab);
+	stats_expect(&psset, 1);
+}
+TEST_END
+
+/*
+ * Fills in and inserts two pageslabs, with the first better than the second,
+ * and each fully allocated (into the allocations in allocs and worse_allocs,
+ * each of which should be HUGEPAGE_PAGES long), except for a single free page
+ * at the end.
+ *
+ * (There's nothing magic about these numbers; it's just useful to share the
+ * setup between the oldest fit and the insert/remove test).
+ */
+static void
+init_test_pageslabs(psset_t *psset, hpdata_t *pageslab,
+    hpdata_t *worse_pageslab, edata_t *alloc, edata_t *worse_alloc) {
+	bool err;
+
+	hpdata_init(pageslab, (void *)(10 * HUGEPAGE), PAGESLAB_AGE);
+	/*
+	 * This pageslab would be better from an address-first-fit POV, but
+	 * worse from an age POV.
+	 */
+	hpdata_init(worse_pageslab, (void *)(9 * HUGEPAGE), PAGESLAB_AGE + 1);
+
+	psset_init(psset);
+
+	edata_init_test(&alloc[0]);
+	test_psset_alloc_new(psset, pageslab, &alloc[0], PAGE);
+	for (size_t i = 1; i < HUGEPAGE_PAGES; i++) {
+		edata_init_test(&alloc[i]);
+		err = test_psset_alloc_reuse(psset, &alloc[i], PAGE);
+		expect_false(err, "Nonempty psset failed page allocation.");
+		expect_ptr_eq(pageslab, edata_ps_get(&alloc[i]),
+		    "Allocated from the wrong pageslab");
+	}
+
+	edata_init_test(&worse_alloc[0]);
+	test_psset_alloc_new(psset, worse_pageslab, &worse_alloc[0], PAGE);
+	expect_ptr_eq(worse_pageslab, edata_ps_get(&worse_alloc[0]),
+	    "Allocated from the wrong pageslab");
+	/*
+	 * Make the two pssets otherwise indistinguishable; all full except for
+	 * a single page.
+	 */
+	for (size_t i = 1; i < HUGEPAGE_PAGES - 1; i++) {
+		edata_init_test(&worse_alloc[i]);
+		err = test_psset_alloc_reuse(psset, &alloc[i], PAGE);
+		expect_false(err, "Nonempty psset failed page allocation.");
+		expect_ptr_eq(worse_pageslab, edata_ps_get(&alloc[i]),
+		    "Allocated from the wrong pageslab");
+	}
+
+	/* Deallocate the last page from the older pageslab. */
+	hpdata_t *evicted = test_psset_dalloc(psset,
+	    &alloc[HUGEPAGE_PAGES - 1]);
+	expect_ptr_null(evicted, "Unexpected eviction");
+}
+
+TEST_BEGIN(test_oldest_fit) {
+	bool err;
+	edata_t alloc[HUGEPAGE_PAGES];
+	edata_t worse_alloc[HUGEPAGE_PAGES];
+
+	hpdata_t pageslab;
+	hpdata_t worse_pageslab;
+
+	psset_t psset;
+
+	init_test_pageslabs(&psset, &pageslab, &worse_pageslab, alloc,
+	    worse_alloc);
+
+	/* The edata should come from the better pageslab. */
+	edata_t test_edata;
+	edata_init_test(&test_edata);
+	err = test_psset_alloc_reuse(&psset, &test_edata, PAGE);
+	expect_false(err, "Nonempty psset failed page allocation");
+	expect_ptr_eq(&pageslab, edata_ps_get(&test_edata),
+	    "Allocated from the wrong pageslab");
+}
+TEST_END
+
+TEST_BEGIN(test_insert_remove) {
+	bool err;
+	hpdata_t *ps;
+	edata_t alloc[HUGEPAGE_PAGES];
+	edata_t worse_alloc[HUGEPAGE_PAGES];
+
+	hpdata_t pageslab;
+	hpdata_t worse_pageslab;
+
+	psset_t psset;
+
+	init_test_pageslabs(&psset, &pageslab, &worse_pageslab, alloc,
+	    worse_alloc);
+
+	/* Remove better; should still be able to alloc from worse. */
+	psset_update_begin(&psset, &pageslab);
+	err = test_psset_alloc_reuse(&psset, &worse_alloc[HUGEPAGE_PAGES - 1],
+	    PAGE);
+	expect_false(err, "Removal should still leave an empty page");
+	expect_ptr_eq(&worse_pageslab,
+	    edata_ps_get(&worse_alloc[HUGEPAGE_PAGES - 1]),
+	    "Allocated out of wrong ps");
+
+	/*
+	 * After deallocating the previous alloc and reinserting better, it
+	 * should be preferred for future allocations.
+	 */
+	ps = test_psset_dalloc(&psset, &worse_alloc[HUGEPAGE_PAGES - 1]);
+	expect_ptr_null(ps, "Incorrect eviction of nonempty pageslab");
+	psset_update_end(&psset, &pageslab);
+	err = test_psset_alloc_reuse(&psset, &alloc[HUGEPAGE_PAGES - 1], PAGE);
+	expect_false(err, "psset should be nonempty");
+	expect_ptr_eq(&pageslab, edata_ps_get(&alloc[HUGEPAGE_PAGES - 1]),
+	    "Removal/reinsertion shouldn't change ordering");
+	/*
+	 * After deallocating and removing both, allocations should fail.
+	 */
+	ps = test_psset_dalloc(&psset, &alloc[HUGEPAGE_PAGES - 1]);
+	expect_ptr_null(ps, "Incorrect eviction");
+	psset_update_begin(&psset, &pageslab);
+	psset_update_begin(&psset, &worse_pageslab);
+	err = test_psset_alloc_reuse(&psset, &alloc[HUGEPAGE_PAGES - 1], PAGE);
+	expect_true(err, "psset should be empty, but an alloc succeeded");
+}
+TEST_END
+
+TEST_BEGIN(test_purge_prefers_nonhuge) {
+	/*
+	 * All else being equal, we should prefer purging non-huge pages over
+	 * huge ones for non-empty extents.
+	 */
+
+	/* Nothing magic about this constant. */
+	enum {
+		NHP = 23,
+	};
+	hpdata_t *hpdata;
+
+	psset_t psset;
+	psset_init(&psset);
+
+	hpdata_t hpdata_huge[NHP];
+	uintptr_t huge_begin = (uintptr_t)&hpdata_huge[0];
+	uintptr_t huge_end = (uintptr_t)&hpdata_huge[NHP];
+	hpdata_t hpdata_nonhuge[NHP];
+	uintptr_t nonhuge_begin = (uintptr_t)&hpdata_nonhuge[0];
+	uintptr_t nonhuge_end = (uintptr_t)&hpdata_nonhuge[NHP];
+
+	for (size_t i = 0; i < NHP; i++) {
+		hpdata_init(&hpdata_huge[i], (void *)((10 + i) * HUGEPAGE),
+		    123 + i);
+		psset_insert(&psset, &hpdata_huge[i]);
+
+		hpdata_init(&hpdata_nonhuge[i],
+		    (void *)((10 + NHP + i) * HUGEPAGE),
+		    456 + i);
+		psset_insert(&psset, &hpdata_nonhuge[i]);
+
+	}
+	for (int i = 0; i < 2 * NHP; i++) {
+		hpdata = psset_pick_alloc(&psset, HUGEPAGE * 3 / 4);
+		psset_update_begin(&psset, hpdata);
+		void *ptr;
+		ptr = hpdata_reserve_alloc(hpdata, HUGEPAGE * 3 / 4);
+		/* Ignore the first alloc, which will stick around. */
+		(void)ptr;
+		/*
+		 * The second alloc is to dirty the pages; free it immediately
+		 * after allocating.
+		 */
+		ptr = hpdata_reserve_alloc(hpdata, HUGEPAGE / 4);
+		hpdata_unreserve(hpdata, ptr, HUGEPAGE / 4);
+
+		if (huge_begin <= (uintptr_t)hpdata
+		    && (uintptr_t)hpdata < huge_end) {
+			hpdata_hugify(hpdata);
+		}
+
+		hpdata_purge_allowed_set(hpdata, true);
+		psset_update_end(&psset, hpdata);
+	}
+
+	/*
+	 * We've got a bunch of 1/8th dirty hpdatas.  It should give us all the
+	 * non-huge ones to purge, then all the huge ones, then refuse to purge
+	 * further.
+	 */
+	for (int i = 0; i < NHP; i++) {
+		hpdata = psset_pick_purge(&psset);
+		assert_true(nonhuge_begin <= (uintptr_t)hpdata
+		    && (uintptr_t)hpdata < nonhuge_end, "");
+		psset_update_begin(&psset, hpdata);
+		test_psset_fake_purge(hpdata);
+		hpdata_purge_allowed_set(hpdata, false);
+		psset_update_end(&psset, hpdata);
+	}
+	for (int i = 0; i < NHP; i++) {
+		hpdata = psset_pick_purge(&psset);
+		expect_true(huge_begin <= (uintptr_t)hpdata
+		    && (uintptr_t)hpdata < huge_end, "");
+		psset_update_begin(&psset, hpdata);
+		hpdata_dehugify(hpdata);
+		test_psset_fake_purge(hpdata);
+		hpdata_purge_allowed_set(hpdata, false);
+		psset_update_end(&psset, hpdata);
+	}
+}
+TEST_END
+
+TEST_BEGIN(test_purge_prefers_empty) {
+	void *ptr;
+
+	psset_t psset;
+	psset_init(&psset);
+
+	hpdata_t hpdata_empty;
+	hpdata_t hpdata_nonempty;
+	hpdata_init(&hpdata_empty, (void *)(10 * HUGEPAGE), 123);
+	psset_insert(&psset, &hpdata_empty);
+	hpdata_init(&hpdata_nonempty, (void *)(11 * HUGEPAGE), 456);
+	psset_insert(&psset, &hpdata_nonempty);
+
+	psset_update_begin(&psset, &hpdata_empty);
+	ptr = hpdata_reserve_alloc(&hpdata_empty, PAGE);
+	expect_ptr_eq(hpdata_addr_get(&hpdata_empty), ptr, "");
+	hpdata_unreserve(&hpdata_empty, ptr, PAGE);
+	hpdata_purge_allowed_set(&hpdata_empty, true);
+	psset_update_end(&psset, &hpdata_empty);
+
+	psset_update_begin(&psset, &hpdata_nonempty);
+	ptr = hpdata_reserve_alloc(&hpdata_nonempty, 10 * PAGE);
+	expect_ptr_eq(hpdata_addr_get(&hpdata_nonempty), ptr, "");
+	hpdata_unreserve(&hpdata_nonempty, ptr, 9 * PAGE);
+	hpdata_purge_allowed_set(&hpdata_nonempty, true);
+	psset_update_end(&psset, &hpdata_nonempty);
+
+	/*
+	 * The nonempty slab has 9 dirty pages, while the empty one has only 1.
+	 * We should still pick the empty one for purging.
+	 */
+	hpdata_t *to_purge = psset_pick_purge(&psset);
+	expect_ptr_eq(&hpdata_empty, to_purge, "");
+}
+TEST_END
+
+TEST_BEGIN(test_purge_prefers_empty_huge) {
+	void *ptr;
+
+	psset_t psset;
+	psset_init(&psset);
+
+	enum {NHP = 10 };
+
+	hpdata_t hpdata_huge[NHP];
+	hpdata_t hpdata_nonhuge[NHP];
+
+	uintptr_t cur_addr = 100 * HUGEPAGE;
+	uint64_t cur_age = 123;
+	for (int i = 0; i < NHP; i++) {
+		hpdata_init(&hpdata_huge[i], (void *)cur_addr, cur_age);
+		cur_addr += HUGEPAGE;
+		cur_age++;
+		psset_insert(&psset, &hpdata_huge[i]);
+
+		hpdata_init(&hpdata_nonhuge[i], (void *)cur_addr, cur_age);
+		cur_addr += HUGEPAGE;
+		cur_age++;
+		psset_insert(&psset, &hpdata_nonhuge[i]);
+
+		/*
+		 * Make the hpdata_huge[i] fully dirty, empty, purgable, and
+		 * huge.
+		 */
+		psset_update_begin(&psset, &hpdata_huge[i]);
+		ptr = hpdata_reserve_alloc(&hpdata_huge[i], HUGEPAGE);
+		expect_ptr_eq(hpdata_addr_get(&hpdata_huge[i]), ptr, "");
+		hpdata_hugify(&hpdata_huge[i]);
+		hpdata_unreserve(&hpdata_huge[i], ptr, HUGEPAGE);
+		hpdata_purge_allowed_set(&hpdata_huge[i], true);
+		psset_update_end(&psset, &hpdata_huge[i]);
+
+		/*
+		 * Make hpdata_nonhuge[i] fully dirty, empty, purgable, and
+		 * non-huge.
+		 */
+		psset_update_begin(&psset, &hpdata_nonhuge[i]);
+		ptr = hpdata_reserve_alloc(&hpdata_nonhuge[i], HUGEPAGE);
+		expect_ptr_eq(hpdata_addr_get(&hpdata_nonhuge[i]), ptr, "");
+		hpdata_unreserve(&hpdata_nonhuge[i], ptr, HUGEPAGE);
+		hpdata_purge_allowed_set(&hpdata_nonhuge[i], true);
+		psset_update_end(&psset, &hpdata_nonhuge[i]);
+	}
+
+	/*
+	 * We have a bunch of empty slabs, half huge, half nonhuge, inserted in
+	 * alternating order.  We should pop all the huge ones before popping
+	 * any of the non-huge ones for purging.
+	 */
+	for (int i = 0; i < NHP; i++) {
+		hpdata_t *to_purge = psset_pick_purge(&psset);
+		expect_ptr_eq(&hpdata_huge[i], to_purge, "");
+		psset_update_begin(&psset, to_purge);
+		hpdata_purge_allowed_set(to_purge, false);
+		psset_update_end(&psset, to_purge);
+	}
+	for (int i = 0; i < NHP; i++) {
+		hpdata_t *to_purge = psset_pick_purge(&psset);
+		expect_ptr_eq(&hpdata_nonhuge[i], to_purge, "");
+		psset_update_begin(&psset, to_purge);
+		hpdata_purge_allowed_set(to_purge, false);
+		psset_update_end(&psset, to_purge);
+	}
+}
+TEST_END
+
+int
+main(void) {
+	return test_no_reentrancy(
+	    test_empty,
+	    test_fill,
+	    test_reuse,
+	    test_evict,
+	    test_multi_pageslab,
+	    test_stats,
+	    test_oldest_fit,
+	    test_insert_remove,
+	    test_purge_prefers_nonhuge,
+	    test_purge_prefers_empty,
+	    test_purge_prefers_empty_huge);
+}
diff --git a/deps/jemalloc/test/unit/ql.c b/deps/jemalloc/test/unit/ql.c
new file mode 100644
index 0000000..f913058
--- /dev/null
+++ b/deps/jemalloc/test/unit/ql.c
@@ -0,0 +1,317 @@
+#include "test/jemalloc_test.h"
+
+#include "jemalloc/internal/ql.h"
+
+/* Number of ring entries, in [2..26]. */
+#define NENTRIES 9
+
+typedef struct list_s list_t;
+typedef ql_head(list_t) list_head_t;
+
+struct list_s {
+	ql_elm(list_t) link;
+	char id;
+};
+
+static void
+test_empty_list(list_head_t *head) {
+	list_t *t;
+	unsigned i;
+
+	expect_true(ql_empty(head), "Unexpected element for empty list");
+	expect_ptr_null(ql_first(head), "Unexpected element for empty list");
+	expect_ptr_null(ql_last(head, link),
+	    "Unexpected element for empty list");
+
+	i = 0;
+	ql_foreach(t, head, link) {
+		i++;
+	}
+	expect_u_eq(i, 0, "Unexpected element for empty list");
+
+	i = 0;
+	ql_reverse_foreach(t, head, link) {
+		i++;
+	}
+	expect_u_eq(i, 0, "Unexpected element for empty list");
+}
+
+TEST_BEGIN(test_ql_empty) {
+	list_head_t head;
+
+	ql_new(&head);
+	test_empty_list(&head);
+}
+TEST_END
+
+static void
+init_entries(list_t *entries, unsigned nentries) {
+	unsigned i;
+
+	for (i = 0; i < nentries; i++) {
+		entries[i].id = 'a' + i;
+		ql_elm_new(&entries[i], link);
+	}
+}
+
+static void
+test_entries_list(list_head_t *head, list_t *entries, unsigned nentries) {
+	list_t *t;
+	unsigned i;
+
+	expect_false(ql_empty(head), "List should not be empty");
+	expect_c_eq(ql_first(head)->id, entries[0].id, "Element id mismatch");
+	expect_c_eq(ql_last(head, link)->id, entries[nentries-1].id,
+	    "Element id mismatch");
+
+	i = 0;
+	ql_foreach(t, head, link) {
+		expect_c_eq(t->id, entries[i].id, "Element id mismatch");
+		i++;
+	}
+
+	i = 0;
+	ql_reverse_foreach(t, head, link) {
+		expect_c_eq(t->id, entries[nentries-i-1].id,
+		    "Element id mismatch");
+		i++;
+	}
+
+	for (i = 0; i < nentries-1; i++) {
+		t = ql_next(head, &entries[i], link);
+		expect_c_eq(t->id, entries[i+1].id, "Element id mismatch");
+	}
+	expect_ptr_null(ql_next(head, &entries[nentries-1], link),
+	    "Unexpected element");
+
+	expect_ptr_null(ql_prev(head, &entries[0], link), "Unexpected element");
+	for (i = 1; i < nentries; i++) {
+		t = ql_prev(head, &entries[i], link);
+		expect_c_eq(t->id, entries[i-1].id, "Element id mismatch");
+	}
+}
+
+TEST_BEGIN(test_ql_tail_insert) {
+	list_head_t head;
+	list_t entries[NENTRIES];
+	unsigned i;
+
+	ql_new(&head);
+	init_entries(entries, sizeof(entries)/sizeof(list_t));
+	for (i = 0; i < NENTRIES; i++) {
+		ql_tail_insert(&head, &entries[i], link);
+	}
+
+	test_entries_list(&head, entries, NENTRIES);
+}
+TEST_END
+
+TEST_BEGIN(test_ql_tail_remove) {
+	list_head_t head;
+	list_t entries[NENTRIES];
+	unsigned i;
+
+	ql_new(&head);
+	init_entries(entries, sizeof(entries)/sizeof(list_t));
+	for (i = 0; i < NENTRIES; i++) {
+		ql_tail_insert(&head, &entries[i], link);
+	}
+
+	for (i = 0; i < NENTRIES; i++) {
+		test_entries_list(&head, entries, NENTRIES-i);
+		ql_tail_remove(&head, list_t, link);
+	}
+	test_empty_list(&head);
+}
+TEST_END
+
+TEST_BEGIN(test_ql_head_insert) {
+	list_head_t head;
+	list_t entries[NENTRIES];
+	unsigned i;
+
+	ql_new(&head);
+	init_entries(entries, sizeof(entries)/sizeof(list_t));
+	for (i = 0; i < NENTRIES; i++) {
+		ql_head_insert(&head, &entries[NENTRIES-i-1], link);
+	}
+
+	test_entries_list(&head, entries, NENTRIES);
+}
+TEST_END
+
+TEST_BEGIN(test_ql_head_remove) {
+	list_head_t head;
+	list_t entries[NENTRIES];
+	unsigned i;
+
+	ql_new(&head);
+	init_entries(entries, sizeof(entries)/sizeof(list_t));
+	for (i = 0; i < NENTRIES; i++) {
+		ql_head_insert(&head, &entries[NENTRIES-i-1], link);
+	}
+
+	for (i = 0; i < NENTRIES; i++) {
+		test_entries_list(&head, &entries[i], NENTRIES-i);
+		ql_head_remove(&head, list_t, link);
+	}
+	test_empty_list(&head);
+}
+TEST_END
+
+TEST_BEGIN(test_ql_insert) {
+	list_head_t head;
+	list_t entries[8];
+	list_t *a, *b, *c, *d, *e, *f, *g, *h;
+
+	ql_new(&head);
+	init_entries(entries, sizeof(entries)/sizeof(list_t));
+	a = &entries[0];
+	b = &entries[1];
+	c = &entries[2];
+	d = &entries[3];
+	e = &entries[4];
+	f = &entries[5];
+	g = &entries[6];
+	h = &entries[7];
+
+	/*
+	 * ql_remove(), ql_before_insert(), and ql_after_insert() are used
+	 * internally by other macros that are already tested, so there's no
+	 * need to test them completely.  However, insertion/deletion from the
+	 * middle of lists is not otherwise tested; do so here.
+	 */
+	ql_tail_insert(&head, f, link);
+	ql_before_insert(&head, f, b, link);
+	ql_before_insert(&head, f, c, link);
+	ql_after_insert(f, h, link);
+	ql_after_insert(f, g, link);
+	ql_before_insert(&head, b, a, link);
+	ql_after_insert(c, d, link);
+	ql_before_insert(&head, f, e, link);
+
+	test_entries_list(&head, entries, sizeof(entries)/sizeof(list_t));
+}
+TEST_END
+
+static void
+test_concat_split_entries(list_t *entries, unsigned nentries_a,
+    unsigned nentries_b) {
+	init_entries(entries, nentries_a + nentries_b);
+
+	list_head_t head_a;
+	ql_new(&head_a);
+	for (unsigned i = 0; i < nentries_a; i++) {
+		ql_tail_insert(&head_a, &entries[i], link);
+	}
+	if (nentries_a == 0) {
+		test_empty_list(&head_a);
+	} else {
+		test_entries_list(&head_a, entries, nentries_a);
+	}
+
+	list_head_t head_b;
+	ql_new(&head_b);
+	for (unsigned i = 0; i < nentries_b; i++) {
+		ql_tail_insert(&head_b, &entries[nentries_a + i], link);
+	}
+	if (nentries_b == 0) {
+		test_empty_list(&head_b);
+	} else {
+		test_entries_list(&head_b, entries + nentries_a, nentries_b);
+	}
+
+	ql_concat(&head_a, &head_b, link);
+	if (nentries_a + nentries_b == 0) {
+		test_empty_list(&head_a);
+	} else {
+		test_entries_list(&head_a, entries, nentries_a + nentries_b);
+	}
+	test_empty_list(&head_b);
+
+	if (nentries_b == 0) {
+		return;
+	}
+
+	list_head_t head_c;
+	ql_split(&head_a, &entries[nentries_a], &head_c, link);
+	if (nentries_a == 0) {
+		test_empty_list(&head_a);
+	} else {
+		test_entries_list(&head_a, entries, nentries_a);
+	}
+	test_entries_list(&head_c, entries + nentries_a, nentries_b);
+}
+
+TEST_BEGIN(test_ql_concat_split) {
+	list_t entries[NENTRIES];
+
+	test_concat_split_entries(entries, 0, 0);
+
+	test_concat_split_entries(entries, 0, 1);
+	test_concat_split_entries(entries, 1, 0);
+
+	test_concat_split_entries(entries, 0, NENTRIES);
+	test_concat_split_entries(entries, 1, NENTRIES - 1);
+	test_concat_split_entries(entries, NENTRIES / 2,
+	    NENTRIES - NENTRIES / 2);
+	test_concat_split_entries(entries, NENTRIES - 1, 1);
+	test_concat_split_entries(entries, NENTRIES, 0);
+}
+TEST_END
+
+TEST_BEGIN(test_ql_rotate) {
+	list_head_t head;
+	list_t entries[NENTRIES];
+	unsigned i;
+
+	ql_new(&head);
+	init_entries(entries, sizeof(entries)/sizeof(list_t));
+	for (i = 0; i < NENTRIES; i++) {
+		ql_tail_insert(&head, &entries[i], link);
+	}
+
+	char head_id = ql_first(&head)->id;
+	for (i = 0; i < NENTRIES; i++) {
+		assert_c_eq(ql_first(&head)->id, head_id, "");
+		ql_rotate(&head, link);
+		assert_c_eq(ql_last(&head, link)->id, head_id, "");
+		head_id++;
+	}
+	test_entries_list(&head, entries, NENTRIES);
+}
+TEST_END
+
+TEST_BEGIN(test_ql_move) {
+	list_head_t head_dest, head_src;
+	list_t entries[NENTRIES];
+	unsigned i;
+
+	ql_new(&head_src);
+	ql_move(&head_dest, &head_src);
+	test_empty_list(&head_src);
+	test_empty_list(&head_dest);
+
+	init_entries(entries, sizeof(entries)/sizeof(list_t));
+	for (i = 0; i < NENTRIES; i++) {
+		ql_tail_insert(&head_src, &entries[i], link);
+	}
+	ql_move(&head_dest, &head_src);
+	test_empty_list(&head_src);
+	test_entries_list(&head_dest, entries, NENTRIES);
+}
+TEST_END
+
+int
+main(void) {
+	return test(
+	    test_ql_empty,
+	    test_ql_tail_insert,
+	    test_ql_tail_remove,
+	    test_ql_head_insert,
+	    test_ql_head_remove,
+	    test_ql_insert,
+	    test_ql_concat_split,
+	    test_ql_rotate,
+	    test_ql_move);
+}
diff --git a/deps/jemalloc/test/unit/qr.c b/deps/jemalloc/test/unit/qr.c
new file mode 100644
index 0000000..16eed0e
--- /dev/null
+++ b/deps/jemalloc/test/unit/qr.c
@@ -0,0 +1,243 @@
+#include "test/jemalloc_test.h"
+
+#include "jemalloc/internal/qr.h"
+
+/* Number of ring entries, in [2..26]. */
+#define NENTRIES 9
+/* Split index, in [1..NENTRIES). */
+#define SPLIT_INDEX 5
+
+typedef struct ring_s ring_t;
+
+struct ring_s {
+	qr(ring_t) link;
+	char id;
+};
+
+static void
+init_entries(ring_t *entries) {
+	unsigned i;
+
+	for (i = 0; i < NENTRIES; i++) {
+		qr_new(&entries[i], link);
+		entries[i].id = 'a' + i;
+	}
+}
+
+static void
+test_independent_entries(ring_t *entries) {
+	ring_t *t;
+	unsigned i, j;
+
+	for (i = 0; i < NENTRIES; i++) {
+		j = 0;
+		qr_foreach(t, &entries[i], link) {
+			j++;
+		}
+		expect_u_eq(j, 1,
+		    "Iteration over single-element ring should visit precisely "
+		    "one element");
+	}
+	for (i = 0; i < NENTRIES; i++) {
+		j = 0;
+		qr_reverse_foreach(t, &entries[i], link) {
+			j++;
+		}
+		expect_u_eq(j, 1,
+		    "Iteration over single-element ring should visit precisely "
+		    "one element");
+	}
+	for (i = 0; i < NENTRIES; i++) {
+		t = qr_next(&entries[i], link);
+		expect_ptr_eq(t, &entries[i],
+		    "Next element in single-element ring should be same as "
+		    "current element");
+	}
+	for (i = 0; i < NENTRIES; i++) {
+		t = qr_prev(&entries[i], link);
+		expect_ptr_eq(t, &entries[i],
+		    "Previous element in single-element ring should be same as "
+		    "current element");
+	}
+}
+
+TEST_BEGIN(test_qr_one) {
+	ring_t entries[NENTRIES];
+
+	init_entries(entries);
+	test_independent_entries(entries);
+}
+TEST_END
+
+static void
+test_entries_ring(ring_t *entries) {
+	ring_t *t;
+	unsigned i, j;
+
+	for (i = 0; i < NENTRIES; i++) {
+		j = 0;
+		qr_foreach(t, &entries[i], link) {
+			expect_c_eq(t->id, entries[(i+j) % NENTRIES].id,
+			    "Element id mismatch");
+			j++;
+		}
+	}
+	for (i = 0; i < NENTRIES; i++) {
+		j = 0;
+		qr_reverse_foreach(t, &entries[i], link) {
+			expect_c_eq(t->id, entries[(NENTRIES+i-j-1) %
+			    NENTRIES].id, "Element id mismatch");
+			j++;
+		}
+	}
+	for (i = 0; i < NENTRIES; i++) {
+		t = qr_next(&entries[i], link);
+		expect_c_eq(t->id, entries[(i+1) % NENTRIES].id,
+		    "Element id mismatch");
+	}
+	for (i = 0; i < NENTRIES; i++) {
+		t = qr_prev(&entries[i], link);
+		expect_c_eq(t->id, entries[(NENTRIES+i-1) % NENTRIES].id,
+		    "Element id mismatch");
+	}
+}
+
+TEST_BEGIN(test_qr_after_insert) {
+	ring_t entries[NENTRIES];
+	unsigned i;
+
+	init_entries(entries);
+	for (i = 1; i < NENTRIES; i++) {
+		qr_after_insert(&entries[i - 1], &entries[i], link);
+	}
+	test_entries_ring(entries);
+}
+TEST_END
+
+TEST_BEGIN(test_qr_remove) {
+	ring_t entries[NENTRIES];
+	ring_t *t;
+	unsigned i, j;
+
+	init_entries(entries);
+	for (i = 1; i < NENTRIES; i++) {
+		qr_after_insert(&entries[i - 1], &entries[i], link);
+	}
+
+	for (i = 0; i < NENTRIES; i++) {
+		j = 0;
+		qr_foreach(t, &entries[i], link) {
+			expect_c_eq(t->id, entries[i+j].id,
+			    "Element id mismatch");
+			j++;
+		}
+		j = 0;
+		qr_reverse_foreach(t, &entries[i], link) {
+			expect_c_eq(t->id, entries[NENTRIES - 1 - j].id,
+			"Element id mismatch");
+			j++;
+		}
+		qr_remove(&entries[i], link);
+	}
+	test_independent_entries(entries);
+}
+TEST_END
+
+TEST_BEGIN(test_qr_before_insert) {
+	ring_t entries[NENTRIES];
+	ring_t *t;
+	unsigned i, j;
+
+	init_entries(entries);
+	for (i = 1; i < NENTRIES; i++) {
+		qr_before_insert(&entries[i - 1], &entries[i], link);
+	}
+	for (i = 0; i < NENTRIES; i++) {
+		j = 0;
+		qr_foreach(t, &entries[i], link) {
+			expect_c_eq(t->id, entries[(NENTRIES+i-j) %
+			    NENTRIES].id, "Element id mismatch");
+			j++;
+		}
+	}
+	for (i = 0; i < NENTRIES; i++) {
+		j = 0;
+		qr_reverse_foreach(t, &entries[i], link) {
+			expect_c_eq(t->id, entries[(i+j+1) % NENTRIES].id,
+			    "Element id mismatch");
+			j++;
+		}
+	}
+	for (i = 0; i < NENTRIES; i++) {
+		t = qr_next(&entries[i], link);
+		expect_c_eq(t->id, entries[(NENTRIES+i-1) % NENTRIES].id,
+		    "Element id mismatch");
+	}
+	for (i = 0; i < NENTRIES; i++) {
+		t = qr_prev(&entries[i], link);
+		expect_c_eq(t->id, entries[(i+1) % NENTRIES].id,
+		    "Element id mismatch");
+	}
+}
+TEST_END
+
+static void
+test_split_entries(ring_t *entries) {
+	ring_t *t;
+	unsigned i, j;
+
+	for (i = 0; i < NENTRIES; i++) {
+		j = 0;
+		qr_foreach(t, &entries[i], link) {
+			if (i < SPLIT_INDEX) {
+				expect_c_eq(t->id,
+				    entries[(i+j) % SPLIT_INDEX].id,
+				    "Element id mismatch");
+			} else {
+				expect_c_eq(t->id, entries[(i+j-SPLIT_INDEX) %
+				    (NENTRIES-SPLIT_INDEX) + SPLIT_INDEX].id,
+				    "Element id mismatch");
+			}
+			j++;
+		}
+	}
+}
+
+TEST_BEGIN(test_qr_meld_split) {
+	ring_t entries[NENTRIES];
+	unsigned i;
+
+	init_entries(entries);
+	for (i = 1; i < NENTRIES; i++) {
+		qr_after_insert(&entries[i - 1], &entries[i], link);
+	}
+
+	qr_split(&entries[0], &entries[SPLIT_INDEX], link);
+	test_split_entries(entries);
+
+	qr_meld(&entries[0], &entries[SPLIT_INDEX], link);
+	test_entries_ring(entries);
+
+	qr_meld(&entries[0], &entries[SPLIT_INDEX], link);
+	test_split_entries(entries);
+
+	qr_split(&entries[0], &entries[SPLIT_INDEX], link);
+	test_entries_ring(entries);
+
+	qr_split(&entries[0], &entries[0], link);
+	test_entries_ring(entries);
+
+	qr_meld(&entries[0], &entries[0], link);
+	test_entries_ring(entries);
+}
+TEST_END
+
+int
+main(void) {
+	return test(
+	    test_qr_one,
+	    test_qr_after_insert,
+	    test_qr_remove,
+	    test_qr_before_insert,
+	    test_qr_meld_split);
+}
diff --git a/deps/jemalloc/test/unit/rb.c b/deps/jemalloc/test/unit/rb.c
new file mode 100644
index 0000000..827ec51
--- /dev/null
+++ b/deps/jemalloc/test/unit/rb.c
@@ -0,0 +1,1019 @@
+#include "test/jemalloc_test.h"
+
+#include <stdlib.h>
+
+#include "jemalloc/internal/rb.h"
+
+#define rbtn_black_height(a_type, a_field, a_rbt, r_height) do {	\
+	a_type *rbp_bh_t;						\
+	for (rbp_bh_t = (a_rbt)->rbt_root, (r_height) = 0; rbp_bh_t !=	\
+	    NULL; rbp_bh_t = rbtn_left_get(a_type, a_field,		\
+	    rbp_bh_t)) {						\
+		if (!rbtn_red_get(a_type, a_field, rbp_bh_t)) {		\
+		(r_height)++;						\
+		}							\
+	}								\
+} while (0)
+
+static bool summarize_always_returns_true = false;
+
+typedef struct node_s node_t;
+struct node_s {
+#define NODE_MAGIC 0x9823af7e
+	uint32_t magic;
+	rb_node(node_t) link;
+	/* Order used by nodes. */
+	uint64_t key;
+	/*
+	 * Our made-up summary property is "specialness", with summarization
+	 * taking the max.
+	 */
+	uint64_t specialness;
+
+	/*
+	 * Used by some of the test randomization to avoid double-removing
+	 * nodes.
+	 */
+	bool mid_remove;
+
+	/*
+	 * To test searching functionality, we want to temporarily weaken the
+	 * ordering to allow non-equal nodes that nevertheless compare equal.
+	 */
+	bool allow_duplicates;
+
+	/*
+	 * In check_consistency, it's handy to know a node's rank in the tree;
+	 * this tracks it (but only there; not all tests use this).
+	 */
+	int rank;
+	int filtered_rank;
+
+	/*
+	 * Replicate the internal structure of the tree, to make sure the
+	 * implementation doesn't miss any updates.
+	 */
+	const node_t *summary_lchild;
+	const node_t *summary_rchild;
+	uint64_t summary_max_specialness;
+};
+
+static int
+node_cmp(const node_t *a, const node_t *b) {
+	int ret;
+
+	expect_u32_eq(a->magic, NODE_MAGIC, "Bad magic");
+	expect_u32_eq(b->magic, NODE_MAGIC, "Bad magic");
+
+	ret = (a->key > b->key) - (a->key < b->key);
+	if (ret == 0 && !a->allow_duplicates) {
+		/*
+		 * Duplicates are not allowed in the tree, so force an
+		 * arbitrary ordering for non-identical items with equal keys,
+		 * unless the user is searching and wants to allow the
+		 * duplicate.
+		 */
+		ret = (((uintptr_t)a) > ((uintptr_t)b))
+		    - (((uintptr_t)a) < ((uintptr_t)b));
+	}
+	return ret;
+}
+
+static uint64_t
+node_subtree_specialness(node_t *n, const node_t *lchild,
+    const node_t *rchild) {
+	uint64_t subtree_specialness = n->specialness;
+	if (lchild != NULL
+	    && lchild->summary_max_specialness > subtree_specialness) {
+		subtree_specialness = lchild->summary_max_specialness;
+	}
+	if (rchild != NULL
+	    && rchild->summary_max_specialness > subtree_specialness) {
+		subtree_specialness = rchild->summary_max_specialness;
+	}
+	return subtree_specialness;
+}
+
+static bool
+node_summarize(node_t *a, const node_t *lchild, const node_t *rchild) {
+	uint64_t new_summary_max_specialness = node_subtree_specialness(
+	    a, lchild, rchild);
+	bool changed = (a->summary_lchild != lchild)
+	    || (a->summary_rchild != rchild)
+	    || (new_summary_max_specialness != a->summary_max_specialness);
+	a->summary_max_specialness = new_summary_max_specialness;
+	a->summary_lchild = lchild;
+	a->summary_rchild = rchild;
+	return changed || summarize_always_returns_true;
+}
+
+typedef rb_tree(node_t) tree_t;
+rb_summarized_proto(static, tree_, tree_t, node_t);
+rb_summarized_gen(static, tree_, tree_t, node_t, link, node_cmp,
+    node_summarize);
+
+static bool
+specialness_filter_node(void *ctx, node_t *node) {
+	uint64_t specialness = *(uint64_t *)ctx;
+	return node->specialness >= specialness;
+}
+
+static bool
+specialness_filter_subtree(void *ctx, node_t *node) {
+	uint64_t specialness = *(uint64_t *)ctx;
+	return node->summary_max_specialness >= specialness;
+}
+
+static node_t *
+tree_iterate_cb(tree_t *tree, node_t *node, void *data) {
+	unsigned *i = (unsigned *)data;
+	node_t *search_node;
+
+	expect_u32_eq(node->magic, NODE_MAGIC, "Bad magic");
+
+	/* Test rb_search(). */
+	search_node = tree_search(tree, node);
+	expect_ptr_eq(search_node, node,
+	    "tree_search() returned unexpected node");
+
+	/* Test rb_nsearch(). */
+	search_node = tree_nsearch(tree, node);
+	expect_ptr_eq(search_node, node,
+	    "tree_nsearch() returned unexpected node");
+
+	/* Test rb_psearch(). */
+	search_node = tree_psearch(tree, node);
+	expect_ptr_eq(search_node, node,
+	    "tree_psearch() returned unexpected node");
+
+	(*i)++;
+
+	return NULL;
+}
+
+TEST_BEGIN(test_rb_empty) {
+	tree_t tree;
+	node_t key;
+
+	tree_new(&tree);
+
+	expect_true(tree_empty(&tree), "Tree should be empty");
+	expect_ptr_null(tree_first(&tree), "Unexpected node");
+	expect_ptr_null(tree_last(&tree), "Unexpected node");
+
+	key.key = 0;
+	key.magic = NODE_MAGIC;
+	expect_ptr_null(tree_search(&tree, &key), "Unexpected node");
+
+	key.key = 0;
+	key.magic = NODE_MAGIC;
+	expect_ptr_null(tree_nsearch(&tree, &key), "Unexpected node");
+
+	key.key = 0;
+	key.magic = NODE_MAGIC;
+	expect_ptr_null(tree_psearch(&tree, &key), "Unexpected node");
+
+	unsigned nodes = 0;
+	tree_iter_filtered(&tree, NULL, &tree_iterate_cb,
+	    &nodes, &specialness_filter_node, &specialness_filter_subtree,
+	    NULL);
+	expect_u_eq(0, nodes, "");
+
+	nodes = 0;
+	tree_reverse_iter_filtered(&tree, NULL, &tree_iterate_cb,
+	    &nodes, &specialness_filter_node, &specialness_filter_subtree,
+	    NULL);
+	expect_u_eq(0, nodes, "");
+
+	expect_ptr_null(tree_first_filtered(&tree, &specialness_filter_node,
+	    &specialness_filter_subtree, NULL), "");
+	expect_ptr_null(tree_last_filtered(&tree, &specialness_filter_node,
+	    &specialness_filter_subtree, NULL), "");
+
+	key.key = 0;
+	key.magic = NODE_MAGIC;
+	expect_ptr_null(tree_search_filtered(&tree, &key,
+	    &specialness_filter_node, &specialness_filter_subtree, NULL), "");
+	expect_ptr_null(tree_nsearch_filtered(&tree, &key,
+	    &specialness_filter_node, &specialness_filter_subtree, NULL), "");
+	expect_ptr_null(tree_psearch_filtered(&tree, &key,
+	    &specialness_filter_node, &specialness_filter_subtree, NULL), "");
+}
+TEST_END
+
+static unsigned
+tree_recurse(node_t *node, unsigned black_height, unsigned black_depth) {
+	unsigned ret = 0;
+	node_t *left_node;
+	node_t *right_node;
+
+	if (node == NULL) {
+		return ret;
+	}
+
+	left_node = rbtn_left_get(node_t, link, node);
+	right_node = rbtn_right_get(node_t, link, node);
+
+	expect_ptr_eq(left_node, node->summary_lchild,
+	    "summary missed a tree update");
+	expect_ptr_eq(right_node, node->summary_rchild,
+	    "summary missed a tree update");
+
+	uint64_t expected_subtree_specialness = node_subtree_specialness(node,
+	    left_node, right_node);
+	expect_u64_eq(expected_subtree_specialness,
+	    node->summary_max_specialness, "Incorrect summary");
+
+	if (!rbtn_red_get(node_t, link, node)) {
+		black_depth++;
+	}
+
+	/* Red nodes must be interleaved with black nodes. */
+	if (rbtn_red_get(node_t, link, node)) {
+		if (left_node != NULL) {
+			expect_false(rbtn_red_get(node_t, link, left_node),
+				"Node should be black");
+		}
+		if (right_node != NULL) {
+			expect_false(rbtn_red_get(node_t, link, right_node),
+			    "Node should be black");
+		}
+	}
+
+	/* Self. */
+	expect_u32_eq(node->magic, NODE_MAGIC, "Bad magic");
+
+	/* Left subtree. */
+	if (left_node != NULL) {
+		ret += tree_recurse(left_node, black_height, black_depth);
+	} else {
+		ret += (black_depth != black_height);
+	}
+
+	/* Right subtree. */
+	if (right_node != NULL) {
+		ret += tree_recurse(right_node, black_height, black_depth);
+	} else {
+		ret += (black_depth != black_height);
+	}
+
+	return ret;
+}
+
+static unsigned
+tree_iterate(tree_t *tree) {
+	unsigned i;
+
+	i = 0;
+	tree_iter(tree, NULL, tree_iterate_cb, (void *)&i);
+
+	return i;
+}
+
+static unsigned
+tree_iterate_reverse(tree_t *tree) {
+	unsigned i;
+
+	i = 0;
+	tree_reverse_iter(tree, NULL, tree_iterate_cb, (void *)&i);
+
+	return i;
+}
+
+static void
+node_remove(tree_t *tree, node_t *node, unsigned nnodes) {
+	node_t *search_node;
+	unsigned black_height, imbalances;
+
+	tree_remove(tree, node);
+
+	/* Test rb_nsearch(). */
+	search_node = tree_nsearch(tree, node);
+	if (search_node != NULL) {
+		expect_u64_ge(search_node->key, node->key,
+		    "Key ordering error");
+	}
+
+	/* Test rb_psearch(). */
+	search_node = tree_psearch(tree, node);
+	if (search_node != NULL) {
+		expect_u64_le(search_node->key, node->key,
+		    "Key ordering error");
+	}
+
+	node->magic = 0;
+
+	rbtn_black_height(node_t, link, tree, black_height);
+	imbalances = tree_recurse(tree->rbt_root, black_height, 0);
+	expect_u_eq(imbalances, 0, "Tree is unbalanced");
+	expect_u_eq(tree_iterate(tree), nnodes-1,
+	    "Unexpected node iteration count");
+	expect_u_eq(tree_iterate_reverse(tree), nnodes-1,
+	    "Unexpected node iteration count");
+}
+
+static node_t *
+remove_iterate_cb(tree_t *tree, node_t *node, void *data) {
+	unsigned *nnodes = (unsigned *)data;
+	node_t *ret = tree_next(tree, node);
+
+	node_remove(tree, node, *nnodes);
+
+	return ret;
+}
+
+static node_t *
+remove_reverse_iterate_cb(tree_t *tree, node_t *node, void *data) {
+	unsigned *nnodes = (unsigned *)data;
+	node_t *ret = tree_prev(tree, node);
+
+	node_remove(tree, node, *nnodes);
+
+	return ret;
+}
+
+static void
+destroy_cb(node_t *node, void *data) {
+	unsigned *nnodes = (unsigned *)data;
+
+	expect_u_gt(*nnodes, 0, "Destruction removed too many nodes");
+	(*nnodes)--;
+}
+
+TEST_BEGIN(test_rb_random) {
+	enum {
+		NNODES = 25,
+		NBAGS = 500,
+		SEED = 42
+	};
+	sfmt_t *sfmt;
+	uint64_t bag[NNODES];
+	tree_t tree;
+	node_t nodes[NNODES];
+	unsigned i, j, k, black_height, imbalances;
+
+	sfmt = init_gen_rand(SEED);
+	for (i = 0; i < NBAGS; i++) {
+		switch (i) {
+		case 0:
+			/* Insert in order. */
+			for (j = 0; j < NNODES; j++) {
+				bag[j] = j;
+			}
+			break;
+		case 1:
+			/* Insert in reverse order. */
+			for (j = 0; j < NNODES; j++) {
+				bag[j] = NNODES - j - 1;
+			}
+			break;
+		default:
+			for (j = 0; j < NNODES; j++) {
+				bag[j] = gen_rand64_range(sfmt, NNODES);
+			}
+		}
+
+		/*
+		 * We alternate test behavior with a period of 2 here, and a
+		 * period of 5 down below, so there's no cycle in which certain
+		 * combinations get omitted.
+		 */
+		summarize_always_returns_true = (i % 2 == 0);
+
+		for (j = 1; j <= NNODES; j++) {
+			/* Initialize tree and nodes. */
+			tree_new(&tree);
+			for (k = 0; k < j; k++) {
+				nodes[k].magic = NODE_MAGIC;
+				nodes[k].key = bag[k];
+				nodes[k].specialness = gen_rand64_range(sfmt,
+				    NNODES);
+				nodes[k].mid_remove = false;
+				nodes[k].allow_duplicates = false;
+				nodes[k].summary_lchild = NULL;
+				nodes[k].summary_rchild = NULL;
+				nodes[k].summary_max_specialness = 0;
+			}
+
+			/* Insert nodes. */
+			for (k = 0; k < j; k++) {
+				tree_insert(&tree, &nodes[k]);
+
+				rbtn_black_height(node_t, link, &tree,
+				    black_height);
+				imbalances = tree_recurse(tree.rbt_root,
+				    black_height, 0);
+				expect_u_eq(imbalances, 0,
+				    "Tree is unbalanced");
+
+				expect_u_eq(tree_iterate(&tree), k+1,
+				    "Unexpected node iteration count");
+				expect_u_eq(tree_iterate_reverse(&tree), k+1,
+				    "Unexpected node iteration count");
+
+				expect_false(tree_empty(&tree),
+				    "Tree should not be empty");
+				expect_ptr_not_null(tree_first(&tree),
+				    "Tree should not be empty");
+				expect_ptr_not_null(tree_last(&tree),
+				    "Tree should not be empty");
+
+				tree_next(&tree, &nodes[k]);
+				tree_prev(&tree, &nodes[k]);
+			}
+
+			/* Remove nodes. */
+			switch (i % 5) {
+			case 0:
+				for (k = 0; k < j; k++) {
+					node_remove(&tree, &nodes[k], j - k);
+				}
+				break;
+			case 1:
+				for (k = j; k > 0; k--) {
+					node_remove(&tree, &nodes[k-1], k);
+				}
+				break;
+			case 2: {
+				node_t *start;
+				unsigned nnodes = j;
+
+				start = NULL;
+				do {
+					start = tree_iter(&tree, start,
+					    remove_iterate_cb, (void *)&nnodes);
+					nnodes--;
+				} while (start != NULL);
+				expect_u_eq(nnodes, 0,
+				    "Removal terminated early");
+				break;
+			} case 3: {
+				node_t *start;
+				unsigned nnodes = j;
+
+				start = NULL;
+				do {
+					start = tree_reverse_iter(&tree, start,
+					    remove_reverse_iterate_cb,
+					    (void *)&nnodes);
+					nnodes--;
+				} while (start != NULL);
+				expect_u_eq(nnodes, 0,
+				    "Removal terminated early");
+				break;
+			} case 4: {
+				unsigned nnodes = j;
+				tree_destroy(&tree, destroy_cb, &nnodes);
+				expect_u_eq(nnodes, 0,
+				    "Destruction terminated early");
+				break;
+			} default:
+				not_reached();
+			}
+		}
+	}
+	fini_gen_rand(sfmt);
+}
+TEST_END
+
+static void
+expect_simple_consistency(tree_t *tree, uint64_t specialness,
+    bool expected_empty, node_t *expected_first, node_t *expected_last) {
+	bool empty;
+	node_t *first;
+	node_t *last;
+
+	empty = tree_empty_filtered(tree, &specialness_filter_node,
+	    &specialness_filter_subtree, &specialness);
+	expect_b_eq(expected_empty, empty, "");
+
+	first = tree_first_filtered(tree,
+	    &specialness_filter_node, &specialness_filter_subtree,
+	    (void *)&specialness);
+	expect_ptr_eq(expected_first, first, "");
+
+	last = tree_last_filtered(tree,
+	    &specialness_filter_node, &specialness_filter_subtree,
+	    (void *)&specialness);
+	expect_ptr_eq(expected_last, last, "");
+}
+
+TEST_BEGIN(test_rb_filter_simple) {
+	enum {FILTER_NODES = 10};
+	node_t nodes[FILTER_NODES];
+	for (unsigned i = 0; i < FILTER_NODES; i++) {
+		nodes[i].magic = NODE_MAGIC;
+		nodes[i].key = i;
+		if (i == 0) {
+			nodes[i].specialness = 0;
+		} else {
+			nodes[i].specialness = ffs_u(i);
+		}
+		nodes[i].mid_remove = false;
+		nodes[i].allow_duplicates = false;
+		nodes[i].summary_lchild = NULL;
+		nodes[i].summary_rchild = NULL;
+		nodes[i].summary_max_specialness = 0;
+	}
+
+	summarize_always_returns_true = false;
+
+	tree_t tree;
+	tree_new(&tree);
+
+	/* Should be empty */
+	expect_simple_consistency(&tree, /* specialness */ 0, /* empty */ true,
+	    /* first */ NULL, /* last */ NULL);
+
+	/* Fill in just the odd nodes. */
+	for (int i = 1; i < FILTER_NODES; i += 2) {
+		tree_insert(&tree, &nodes[i]);
+	}
+
+	/* A search for an odd node should succeed. */
+	expect_simple_consistency(&tree, /* specialness */ 0, /* empty */ false,
+	    /* first */ &nodes[1], /* last */ &nodes[9]);
+
+	/* But a search for an even one should fail. */
+	expect_simple_consistency(&tree, /* specialness */ 1, /* empty */ true,
+	    /* first */ NULL, /* last */ NULL);
+
+	/* Now we add an even. */
+	tree_insert(&tree, &nodes[4]);
+	expect_simple_consistency(&tree, /* specialness */ 1, /* empty */ false,
+	    /* first */ &nodes[4], /* last */ &nodes[4]);
+
+	/* A smaller even, and a larger even. */
+	tree_insert(&tree, &nodes[2]);
+	tree_insert(&tree, &nodes[8]);
+
+	/*
+	 * A first-search (resp. last-search) for an even should switch to the
+	 * lower (higher) one, now that it's been added.
+	 */
+	expect_simple_consistency(&tree, /* specialness */ 1, /* empty */ false,
+	    /* first */ &nodes[2], /* last */ &nodes[8]);
+
+	/*
+	 * If we remove 2, a first-search we should go back to 4, while a
+	 * last-search should remain unchanged.
+	 */
+	tree_remove(&tree, &nodes[2]);
+	expect_simple_consistency(&tree, /* specialness */ 1, /* empty */ false,
+	    /* first */ &nodes[4], /* last */ &nodes[8]);
+
+	/* Reinsert 2, then find it again. */
+	tree_insert(&tree, &nodes[2]);
+	expect_simple_consistency(&tree, /* specialness */ 1, /* empty */ false,
+	    /* first */ &nodes[2], /* last */ &nodes[8]);
+
+	/* Searching for a multiple of 4 should not have changed. */
+	expect_simple_consistency(&tree, /* specialness */ 2, /* empty */ false,
+	    /* first */ &nodes[4], /* last */ &nodes[8]);
+
+	/* And a multiple of 8 */
+	expect_simple_consistency(&tree, /* specialness */ 3, /* empty */ false,
+	    /* first */ &nodes[8], /* last */ &nodes[8]);
+
+	/* But not a multiple of 16 */
+	expect_simple_consistency(&tree, /* specialness */ 4, /* empty */ true,
+	    /* first */ NULL, /* last */ NULL);
+}
+TEST_END
+
+typedef struct iter_ctx_s iter_ctx_t;
+struct iter_ctx_s {
+	int ncalls;
+	node_t *last_node;
+
+	int ncalls_max;
+	bool forward;
+};
+
+static node_t *
+tree_iterate_filtered_cb(tree_t *tree, node_t *node, void *arg) {
+	iter_ctx_t *ctx = (iter_ctx_t *)arg;
+	ctx->ncalls++;
+	expect_u64_ge(node->specialness, 1,
+	    "Should only invoke cb on nodes that pass the filter");
+	if (ctx->last_node != NULL) {
+		if (ctx->forward) {
+			expect_d_lt(node_cmp(ctx->last_node, node), 0,
+			    "Incorrect iteration order");
+		} else {
+			expect_d_gt(node_cmp(ctx->last_node, node), 0,
+			    "Incorrect iteration order");
+		}
+	}
+	ctx->last_node = node;
+	if (ctx->ncalls == ctx->ncalls_max) {
+		return node;
+	}
+	return NULL;
+}
+
+static int
+qsort_node_cmp(const void *ap, const void *bp) {
+	node_t *a = *(node_t **)ap;
+	node_t *b = *(node_t **)bp;
+	return node_cmp(a, b);
+}
+
+#define UPDATE_TEST_MAX 100
+static void
+check_consistency(tree_t *tree, node_t nodes[UPDATE_TEST_MAX], int nnodes) {
+	uint64_t specialness = 1;
+
+	bool empty;
+	bool real_empty = true;
+	node_t *first;
+	node_t *real_first = NULL;
+	node_t *last;
+	node_t *real_last = NULL;
+	for (int i = 0; i < nnodes; i++) {
+		if (nodes[i].specialness >= specialness) {
+			real_empty = false;
+			if (real_first == NULL
+			    || node_cmp(&nodes[i], real_first) < 0) {
+				real_first = &nodes[i];
+			}
+			if (real_last == NULL
+			    || node_cmp(&nodes[i], real_last) > 0) {
+				real_last = &nodes[i];
+			}
+		}
+	}
+
+	empty = tree_empty_filtered(tree, &specialness_filter_node,
+	    &specialness_filter_subtree, &specialness);
+	expect_b_eq(real_empty, empty, "");
+
+	first = tree_first_filtered(tree, &specialness_filter_node,
+	    &specialness_filter_subtree, &specialness);
+	expect_ptr_eq(real_first, first, "");
+
+	last = tree_last_filtered(tree, &specialness_filter_node,
+	    &specialness_filter_subtree, &specialness);
+	expect_ptr_eq(real_last, last, "");
+
+	for (int i = 0; i < nnodes; i++) {
+		node_t *next_filtered;
+		node_t *real_next_filtered = NULL;
+		node_t *prev_filtered;
+		node_t *real_prev_filtered = NULL;
+		for (int j = 0; j < nnodes; j++) {
+			if (nodes[j].specialness < specialness) {
+				continue;
+			}
+			if (node_cmp(&nodes[j], &nodes[i]) < 0
+			    && (real_prev_filtered == NULL
+			    || node_cmp(&nodes[j], real_prev_filtered) > 0)) {
+				real_prev_filtered = &nodes[j];
+			}
+			if (node_cmp(&nodes[j], &nodes[i]) > 0
+			    && (real_next_filtered == NULL
+			    || node_cmp(&nodes[j], real_next_filtered) < 0)) {
+				real_next_filtered = &nodes[j];
+			}
+		}
+		next_filtered = tree_next_filtered(tree, &nodes[i],
+		    &specialness_filter_node, &specialness_filter_subtree,
+		    &specialness);
+		expect_ptr_eq(real_next_filtered, next_filtered, "");
+
+		prev_filtered = tree_prev_filtered(tree, &nodes[i],
+		    &specialness_filter_node, &specialness_filter_subtree,
+		    &specialness);
+		expect_ptr_eq(real_prev_filtered, prev_filtered, "");
+
+		node_t *search_filtered;
+		node_t *real_search_filtered;
+		node_t *nsearch_filtered;
+		node_t *real_nsearch_filtered;
+		node_t *psearch_filtered;
+		node_t *real_psearch_filtered;
+
+		/*
+		 * search, nsearch, psearch from a node before nodes[i] in the
+		 * ordering.
+		 */
+		node_t before;
+		before.magic = NODE_MAGIC;
+		before.key = nodes[i].key - 1;
+		before.allow_duplicates = false;
+		real_search_filtered = NULL;
+		search_filtered = tree_search_filtered(tree, &before,
+		    &specialness_filter_node, &specialness_filter_subtree,
+		    &specialness);
+		expect_ptr_eq(real_search_filtered, search_filtered, "");
+
+		real_nsearch_filtered = (nodes[i].specialness >= specialness ?
+		    &nodes[i] : real_next_filtered);
+		nsearch_filtered = tree_nsearch_filtered(tree, &before,
+		    &specialness_filter_node, &specialness_filter_subtree,
+		    &specialness);
+		expect_ptr_eq(real_nsearch_filtered, nsearch_filtered, "");
+
+		real_psearch_filtered = real_prev_filtered;
+		psearch_filtered = tree_psearch_filtered(tree, &before,
+		    &specialness_filter_node, &specialness_filter_subtree,
+		    &specialness);
+		expect_ptr_eq(real_psearch_filtered, psearch_filtered, "");
+
+		/* search, nsearch, psearch from nodes[i] */
+		real_search_filtered = (nodes[i].specialness >= specialness ?
+		    &nodes[i] : NULL);
+		search_filtered = tree_search_filtered(tree, &nodes[i],
+		    &specialness_filter_node, &specialness_filter_subtree,
+		    &specialness);
+		expect_ptr_eq(real_search_filtered, search_filtered, "");
+
+		real_nsearch_filtered = (nodes[i].specialness >= specialness ?
+		    &nodes[i] : real_next_filtered);
+		nsearch_filtered = tree_nsearch_filtered(tree, &nodes[i],
+		    &specialness_filter_node, &specialness_filter_subtree,
+		    &specialness);
+		expect_ptr_eq(real_nsearch_filtered, nsearch_filtered, "");
+
+		real_psearch_filtered = (nodes[i].specialness >= specialness ?
+		    &nodes[i] : real_prev_filtered);
+		psearch_filtered = tree_psearch_filtered(tree, &nodes[i],
+		    &specialness_filter_node, &specialness_filter_subtree,
+		    &specialness);
+		expect_ptr_eq(real_psearch_filtered, psearch_filtered, "");
+
+		/*
+		 * search, nsearch, psearch from a node equivalent to but
+		 * distinct from nodes[i].
+		 */
+		node_t equiv;
+		equiv.magic = NODE_MAGIC;
+		equiv.key = nodes[i].key;
+		equiv.allow_duplicates = true;
+		real_search_filtered = (nodes[i].specialness >= specialness ?
+		    &nodes[i] : NULL);
+		search_filtered = tree_search_filtered(tree, &equiv,
+		    &specialness_filter_node, &specialness_filter_subtree,
+		    &specialness);
+		expect_ptr_eq(real_search_filtered, search_filtered, "");
+
+		real_nsearch_filtered = (nodes[i].specialness >= specialness ?
+		    &nodes[i] : real_next_filtered);
+		nsearch_filtered = tree_nsearch_filtered(tree, &equiv,
+		    &specialness_filter_node, &specialness_filter_subtree,
+		    &specialness);
+		expect_ptr_eq(real_nsearch_filtered, nsearch_filtered, "");
+
+		real_psearch_filtered = (nodes[i].specialness >= specialness ?
+		    &nodes[i] : real_prev_filtered);
+		psearch_filtered = tree_psearch_filtered(tree, &equiv,
+		    &specialness_filter_node, &specialness_filter_subtree,
+		    &specialness);
+		expect_ptr_eq(real_psearch_filtered, psearch_filtered, "");
+
+		/*
+		 * search, nsearch, psearch from a node after nodes[i] in the
+		 * ordering.
+		 */
+		node_t after;
+		after.magic = NODE_MAGIC;
+		after.key = nodes[i].key + 1;
+		after.allow_duplicates = false;
+		real_search_filtered = NULL;
+		search_filtered = tree_search_filtered(tree, &after,
+		    &specialness_filter_node, &specialness_filter_subtree,
+		    &specialness);
+		expect_ptr_eq(real_search_filtered, search_filtered, "");
+
+		real_nsearch_filtered = real_next_filtered;
+		nsearch_filtered = tree_nsearch_filtered(tree, &after,
+		    &specialness_filter_node, &specialness_filter_subtree,
+		    &specialness);
+		expect_ptr_eq(real_nsearch_filtered, nsearch_filtered, "");
+
+		real_psearch_filtered = (nodes[i].specialness >= specialness ?
+		    &nodes[i] : real_prev_filtered);
+		psearch_filtered = tree_psearch_filtered(tree, &after,
+		    &specialness_filter_node, &specialness_filter_subtree,
+		    &specialness);
+		expect_ptr_eq(real_psearch_filtered, psearch_filtered, "");
+	}
+
+	/* Filtered iteration test setup. */
+	int nspecial = 0;
+	node_t *sorted_nodes[UPDATE_TEST_MAX];
+	node_t *sorted_filtered_nodes[UPDATE_TEST_MAX];
+	for (int i = 0; i < nnodes; i++) {
+		sorted_nodes[i] = &nodes[i];
+	}
+	qsort(sorted_nodes, nnodes, sizeof(node_t *), &qsort_node_cmp);
+	for (int i = 0; i < nnodes; i++) {
+		sorted_nodes[i]->rank = i;
+		sorted_nodes[i]->filtered_rank = nspecial;
+		if (sorted_nodes[i]->specialness >= 1) {
+			sorted_filtered_nodes[nspecial] = sorted_nodes[i];
+			nspecial++;
+		}
+	}
+
+	node_t *iter_result;
+
+	iter_ctx_t ctx;
+	ctx.ncalls = 0;
+	ctx.last_node = NULL;
+	ctx.ncalls_max = INT_MAX;
+	ctx.forward = true;
+
+	/* Filtered forward iteration from the beginning. */
+	iter_result = tree_iter_filtered(tree, NULL, &tree_iterate_filtered_cb,
+	    &ctx, &specialness_filter_node, &specialness_filter_subtree,
+	    &specialness);
+	expect_ptr_null(iter_result, "");
+	expect_d_eq(nspecial, ctx.ncalls, "");
+	/* Filtered forward iteration from a starting point. */
+	for (int i = 0; i < nnodes; i++) {
+		ctx.ncalls = 0;
+		ctx.last_node = NULL;
+		iter_result = tree_iter_filtered(tree, &nodes[i],
+		    &tree_iterate_filtered_cb, &ctx, &specialness_filter_node,
+		    &specialness_filter_subtree, &specialness);
+		expect_ptr_null(iter_result, "");
+		expect_d_eq(nspecial - nodes[i].filtered_rank, ctx.ncalls, "");
+	}
+	/* Filtered forward iteration from the beginning, with stopping */
+	for (int i = 0; i < nspecial; i++) {
+		ctx.ncalls = 0;
+		ctx.last_node = NULL;
+		ctx.ncalls_max = i + 1;
+		iter_result = tree_iter_filtered(tree, NULL,
+		    &tree_iterate_filtered_cb, &ctx, &specialness_filter_node,
+		    &specialness_filter_subtree, &specialness);
+		expect_ptr_eq(sorted_filtered_nodes[i], iter_result, "");
+		expect_d_eq(ctx.ncalls, i + 1, "");
+	}
+	/* Filtered forward iteration from a starting point, with stopping. */
+	for (int i = 0; i < nnodes; i++) {
+		for (int j = 0; j < nspecial - nodes[i].filtered_rank; j++) {
+			ctx.ncalls = 0;
+			ctx.last_node = NULL;
+			ctx.ncalls_max = j + 1;
+			iter_result = tree_iter_filtered(tree, &nodes[i],
+			    &tree_iterate_filtered_cb, &ctx,
+			    &specialness_filter_node,
+			    &specialness_filter_subtree, &specialness);
+			expect_d_eq(j + 1, ctx.ncalls, "");
+			expect_ptr_eq(sorted_filtered_nodes[
+			    nodes[i].filtered_rank + j], iter_result, "");
+		}
+	}
+
+	/* Backwards iteration. */
+	ctx.ncalls = 0;
+	ctx.last_node = NULL;
+	ctx.ncalls_max = INT_MAX;
+	ctx.forward = false;
+
+	/* Filtered backward iteration from the end. */
+	iter_result = tree_reverse_iter_filtered(tree, NULL,
+	    &tree_iterate_filtered_cb, &ctx, &specialness_filter_node,
+	    &specialness_filter_subtree, &specialness);
+	expect_ptr_null(iter_result, "");
+	expect_d_eq(nspecial, ctx.ncalls, "");
+	/* Filtered backward iteration from a starting point. */
+	for (int i = 0; i < nnodes; i++) {
+		ctx.ncalls = 0;
+		ctx.last_node = NULL;
+		iter_result = tree_reverse_iter_filtered(tree, &nodes[i],
+		    &tree_iterate_filtered_cb, &ctx, &specialness_filter_node,
+		    &specialness_filter_subtree, &specialness);
+		expect_ptr_null(iter_result, "");
+		int surplus_rank = (nodes[i].specialness >= 1 ? 1 : 0);
+		expect_d_eq(nodes[i].filtered_rank + surplus_rank, ctx.ncalls,
+		    "");
+	}
+	/* Filtered backward iteration from the end, with stopping */
+	for (int i = 0; i < nspecial; i++) {
+		ctx.ncalls = 0;
+		ctx.last_node = NULL;
+		ctx.ncalls_max = i + 1;
+		iter_result = tree_reverse_iter_filtered(tree, NULL,
+		    &tree_iterate_filtered_cb, &ctx, &specialness_filter_node,
+		    &specialness_filter_subtree, &specialness);
+		expect_ptr_eq(sorted_filtered_nodes[nspecial - i - 1],
+		    iter_result, "");
+		expect_d_eq(ctx.ncalls, i + 1, "");
+	}
+	/* Filtered backward iteration from a starting point, with stopping. */
+	for (int i = 0; i < nnodes; i++) {
+		int surplus_rank = (nodes[i].specialness >= 1 ? 1 : 0);
+		for (int j = 0; j < nodes[i].filtered_rank + surplus_rank;
+		    j++) {
+			ctx.ncalls = 0;
+			ctx.last_node = NULL;
+			ctx.ncalls_max = j + 1;
+			iter_result = tree_reverse_iter_filtered(tree,
+			    &nodes[i], &tree_iterate_filtered_cb, &ctx,
+			    &specialness_filter_node,
+			    &specialness_filter_subtree, &specialness);
+			expect_d_eq(j + 1, ctx.ncalls, "");
+			expect_ptr_eq(sorted_filtered_nodes[
+			    nodes[i].filtered_rank - j - 1 + surplus_rank],
+			    iter_result, "");
+		}
+	}
+}
+
+static void
+do_update_search_test(int nnodes, int ntrees, int nremovals,
+    int nupdates) {
+	node_t nodes[UPDATE_TEST_MAX];
+	assert(nnodes <= UPDATE_TEST_MAX);
+
+	sfmt_t *sfmt = init_gen_rand(12345);
+	for (int i = 0; i < ntrees; i++) {
+		tree_t tree;
+		tree_new(&tree);
+		for (int j = 0; j < nnodes; j++) {
+			nodes[j].magic = NODE_MAGIC;
+			/*
+			 * In consistency checking, we increment or decrement a
+			 * key and assume that the result is not a key in the
+			 * tree.  This isn't a *real* concern with 64-bit keys
+			 * and a good PRNG, but why not be correct anyways?
+			 */
+			nodes[j].key = 2 * gen_rand64(sfmt);
+			nodes[j].specialness = 0;
+			nodes[j].mid_remove = false;
+			nodes[j].allow_duplicates = false;
+			nodes[j].summary_lchild = NULL;
+			nodes[j].summary_rchild = NULL;
+			nodes[j].summary_max_specialness = 0;
+			tree_insert(&tree, &nodes[j]);
+		}
+		for (int j = 0; j < nremovals; j++) {
+			int victim = (int)gen_rand64_range(sfmt, nnodes);
+			if (!nodes[victim].mid_remove) {
+				tree_remove(&tree, &nodes[victim]);
+				nodes[victim].mid_remove = true;
+			}
+		}
+		for (int j = 0; j < nnodes; j++) {
+			if (nodes[j].mid_remove) {
+				nodes[j].mid_remove = false;
+				nodes[j].key = 2 * gen_rand64(sfmt);
+				tree_insert(&tree, &nodes[j]);
+			}
+		}
+		for (int j = 0; j < nupdates; j++) {
+			uint32_t ind = gen_rand32_range(sfmt, nnodes);
+			nodes[ind].specialness = 1 - nodes[ind].specialness;
+			tree_update_summaries(&tree, &nodes[ind]);
+			check_consistency(&tree, nodes, nnodes);
+		}
+	}
+}
+
+TEST_BEGIN(test_rb_update_search) {
+	summarize_always_returns_true = false;
+	do_update_search_test(2, 100, 3, 50);
+	do_update_search_test(5, 100, 3, 50);
+	do_update_search_test(12, 100, 5, 1000);
+	do_update_search_test(100, 1, 50, 500);
+}
+TEST_END
+
+typedef rb_tree(node_t) unsummarized_tree_t;
+rb_gen(static UNUSED, unsummarized_tree_, unsummarized_tree_t, node_t, link,
+    node_cmp);
+
+static node_t *
+unsummarized_tree_iterate_cb(unsummarized_tree_t *tree, node_t *node,
+    void *data) {
+	unsigned *i = (unsigned *)data;
+	(*i)++;
+	return NULL;
+}
+/*
+ * The unsummarized and summarized funtionality is implemented via the same
+ * functions; we don't really need to do much more than test that we can exclude
+ * the filtered functionality without anything breaking.
+ */
+TEST_BEGIN(test_rb_unsummarized) {
+	unsummarized_tree_t tree;
+	unsummarized_tree_new(&tree);
+	unsigned nnodes = 0;
+	unsummarized_tree_iter(&tree, NULL, &unsummarized_tree_iterate_cb,
+	    &nnodes);
+	expect_u_eq(0, nnodes, "");
+}
+TEST_END
+
+int
+main(void) {
+	return test_no_reentrancy(
+	    test_rb_empty,
+	    test_rb_random,
+	    test_rb_filter_simple,
+	    test_rb_update_search,
+	    test_rb_unsummarized);
+}
diff --git a/deps/jemalloc/test/unit/retained.c b/deps/jemalloc/test/unit/retained.c
new file mode 100644
index 0000000..aa9f684
--- /dev/null
+++ b/deps/jemalloc/test/unit/retained.c
@@ -0,0 +1,188 @@
+#include "test/jemalloc_test.h"
+
+#include "jemalloc/internal/san.h"
+#include "jemalloc/internal/spin.h"
+
+static unsigned		arena_ind;
+static size_t		sz;
+static size_t		esz;
+#define NEPOCHS		8
+#define PER_THD_NALLOCS	1
+static atomic_u_t	epoch;
+static atomic_u_t	nfinished;
+
+static unsigned
+do_arena_create(extent_hooks_t *h) {
+	unsigned new_arena_ind;
+	size_t ind_sz = sizeof(unsigned);
+	expect_d_eq(mallctl("arenas.create", (void *)&new_arena_ind, &ind_sz,
+	    (void *)(h != NULL ? &h : NULL), (h != NULL ? sizeof(h) : 0)), 0,
+	    "Unexpected mallctl() failure");
+	return new_arena_ind;
+}
+
+static void
+do_arena_destroy(unsigned ind) {
+	size_t mib[3];
+	size_t miblen;
+
+	miblen = sizeof(mib)/sizeof(size_t);
+	expect_d_eq(mallctlnametomib("arena.0.destroy", mib, &miblen), 0,
+	    "Unexpected mallctlnametomib() failure");
+	mib[1] = (size_t)ind;
+	expect_d_eq(mallctlbymib(mib, miblen, NULL, NULL, NULL, 0), 0,
+	    "Unexpected mallctlbymib() failure");
+}
+
+static void
+do_refresh(void) {
+	uint64_t refresh_epoch = 1;
+	expect_d_eq(mallctl("epoch", NULL, NULL, (void *)&refresh_epoch,
+	    sizeof(refresh_epoch)), 0, "Unexpected mallctl() failure");
+}
+
+static size_t
+do_get_size_impl(const char *cmd, unsigned ind) {
+	size_t mib[4];
+	size_t miblen = sizeof(mib) / sizeof(size_t);
+	size_t z = sizeof(size_t);
+
+	expect_d_eq(mallctlnametomib(cmd, mib, &miblen),
+	    0, "Unexpected mallctlnametomib(\"%s\", ...) failure", cmd);
+	mib[2] = ind;
+	size_t size;
+	expect_d_eq(mallctlbymib(mib, miblen, (void *)&size, &z, NULL, 0),
+	    0, "Unexpected mallctlbymib([\"%s\"], ...) failure", cmd);
+
+	return size;
+}
+
+static size_t
+do_get_active(unsigned ind) {
+	return do_get_size_impl("stats.arenas.0.pactive", ind) * PAGE;
+}
+
+static size_t
+do_get_mapped(unsigned ind) {
+	return do_get_size_impl("stats.arenas.0.mapped", ind);
+}
+
+static void *
+thd_start(void *arg) {
+	for (unsigned next_epoch = 1; next_epoch < NEPOCHS; next_epoch++) {
+		/* Busy-wait for next epoch. */
+		unsigned cur_epoch;
+		spin_t spinner = SPIN_INITIALIZER;
+		while ((cur_epoch = atomic_load_u(&epoch, ATOMIC_ACQUIRE)) !=
+		    next_epoch) {
+			spin_adaptive(&spinner);
+		}
+		expect_u_eq(cur_epoch, next_epoch, "Unexpected epoch");
+
+		/*
+		 * Allocate.  The main thread will reset the arena, so there's
+		 * no need to deallocate.
+		 */
+		for (unsigned i = 0; i < PER_THD_NALLOCS; i++) {
+			void *p = mallocx(sz, MALLOCX_ARENA(arena_ind) |
+			    MALLOCX_TCACHE_NONE
+			    );
+			expect_ptr_not_null(p,
+			    "Unexpected mallocx() failure\n");
+		}
+
+		/* Let the main thread know we've finished this iteration. */
+		atomic_fetch_add_u(&nfinished, 1, ATOMIC_RELEASE);
+	}
+
+	return NULL;
+}
+
+TEST_BEGIN(test_retained) {
+	test_skip_if(!config_stats);
+	test_skip_if(opt_hpa);
+
+	arena_ind = do_arena_create(NULL);
+	sz = nallocx(HUGEPAGE, 0);
+	size_t guard_sz = san_guard_enabled() ? SAN_PAGE_GUARDS_SIZE : 0;
+	esz = sz + sz_large_pad + guard_sz;
+
+	atomic_store_u(&epoch, 0, ATOMIC_RELAXED);
+
+	unsigned nthreads = ncpus * 2;
+	if (LG_SIZEOF_PTR < 3 && nthreads > 16) {
+		nthreads = 16; /* 32-bit platform could run out of vaddr. */
+	}
+	VARIABLE_ARRAY(thd_t, threads, nthreads);
+	for (unsigned i = 0; i < nthreads; i++) {
+		thd_create(&threads[i], thd_start, NULL);
+	}
+
+	for (unsigned e = 1; e < NEPOCHS; e++) {
+		atomic_store_u(&nfinished, 0, ATOMIC_RELEASE);
+		atomic_store_u(&epoch, e, ATOMIC_RELEASE);
+
+		/* Wait for threads to finish allocating. */
+		spin_t spinner = SPIN_INITIALIZER;
+		while (atomic_load_u(&nfinished, ATOMIC_ACQUIRE) < nthreads) {
+			spin_adaptive(&spinner);
+		}
+
+		/*
+		 * Assert that retained is no more than the sum of size classes
+		 * that should have been used to satisfy the worker threads'
+		 * requests, discounting per growth fragmentation.
+		 */
+		do_refresh();
+
+		size_t allocated = (esz - guard_sz) * nthreads *
+		    PER_THD_NALLOCS;
+		size_t active = do_get_active(arena_ind);
+		expect_zu_le(allocated, active, "Unexpected active memory");
+		size_t mapped = do_get_mapped(arena_ind);
+		expect_zu_le(active, mapped, "Unexpected mapped memory");
+
+		arena_t *arena = arena_get(tsdn_fetch(), arena_ind, false);
+		size_t usable = 0;
+		size_t fragmented = 0;
+		for (pszind_t pind = sz_psz2ind(HUGEPAGE); pind <
+		    arena->pa_shard.pac.exp_grow.next; pind++) {
+			size_t psz = sz_pind2sz(pind);
+			size_t psz_fragmented = psz % esz;
+			size_t psz_usable = psz - psz_fragmented;
+			/*
+			 * Only consider size classes that wouldn't be skipped.
+			 */
+			if (psz_usable > 0) {
+				expect_zu_lt(usable, allocated,
+				    "Excessive retained memory "
+				    "(%#zx[+%#zx] > %#zx)", usable, psz_usable,
+				    allocated);
+				fragmented += psz_fragmented;
+				usable += psz_usable;
+			}
+		}
+
+		/*
+		 * Clean up arena.  Destroying and recreating the arena
+		 * is simpler that specifying extent hooks that deallocate
+		 * (rather than retaining) during reset.
+		 */
+		do_arena_destroy(arena_ind);
+		expect_u_eq(do_arena_create(NULL), arena_ind,
+		    "Unexpected arena index");
+	}
+
+	for (unsigned i = 0; i < nthreads; i++) {
+		thd_join(threads[i], NULL);
+	}
+
+	do_arena_destroy(arena_ind);
+}
+TEST_END
+
+int
+main(void) {
+	return test(
+	    test_retained);
+}
diff --git a/deps/jemalloc/test/unit/rtree.c b/deps/jemalloc/test/unit/rtree.c
new file mode 100644
index 0000000..4101b72
--- /dev/null
+++ b/deps/jemalloc/test/unit/rtree.c
@@ -0,0 +1,289 @@
+#include "test/jemalloc_test.h"
+
+#include "jemalloc/internal/rtree.h"
+
+#define INVALID_ARENA_IND ((1U << MALLOCX_ARENA_BITS) - 1)
+
+/* Potentially too large to safely place on the stack. */
+rtree_t test_rtree;
+
+TEST_BEGIN(test_rtree_read_empty) {
+	tsdn_t *tsdn;
+
+	tsdn = tsdn_fetch();
+
+	base_t *base = base_new(tsdn, 0, &ehooks_default_extent_hooks,
+	    /* metadata_use_hooks */ true);
+	expect_ptr_not_null(base, "Unexpected base_new failure");
+
+	rtree_t *rtree = &test_rtree;
+	rtree_ctx_t rtree_ctx;
+	rtree_ctx_data_init(&rtree_ctx);
+	expect_false(rtree_new(rtree, base, false),
+	    "Unexpected rtree_new() failure");
+	rtree_contents_t contents;
+	expect_true(rtree_read_independent(tsdn, rtree, &rtree_ctx, PAGE,
+	    &contents), "rtree_read_independent() should fail on empty rtree.");
+
+	base_delete(tsdn, base);
+}
+TEST_END
+
+#undef NTHREADS
+#undef NITERS
+#undef SEED
+
+static edata_t *
+alloc_edata(void) {
+	void *ret = mallocx(sizeof(edata_t), MALLOCX_ALIGN(EDATA_ALIGNMENT));
+	assert_ptr_not_null(ret, "Unexpected mallocx() failure");
+
+	return ret;
+}
+
+TEST_BEGIN(test_rtree_extrema) {
+	edata_t *edata_a, *edata_b;
+	edata_a = alloc_edata();
+	edata_b = alloc_edata();
+	edata_init(edata_a, INVALID_ARENA_IND, NULL, SC_LARGE_MINCLASS,
+	    false, sz_size2index(SC_LARGE_MINCLASS), 0,
+	    extent_state_active, false, false, EXTENT_PAI_PAC, EXTENT_NOT_HEAD);
+	edata_init(edata_b, INVALID_ARENA_IND, NULL, 0, false, SC_NSIZES, 0,
+	    extent_state_active, false, false, EXTENT_PAI_PAC, EXTENT_NOT_HEAD);
+
+	tsdn_t *tsdn = tsdn_fetch();
+
+	base_t *base = base_new(tsdn, 0, &ehooks_default_extent_hooks,
+	    /* metadata_use_hooks */ true);
+	expect_ptr_not_null(base, "Unexpected base_new failure");
+
+	rtree_t *rtree = &test_rtree;
+	rtree_ctx_t rtree_ctx;
+	rtree_ctx_data_init(&rtree_ctx);
+	expect_false(rtree_new(rtree, base, false),
+	    "Unexpected rtree_new() failure");
+
+	rtree_contents_t contents_a;
+	contents_a.edata = edata_a;
+	contents_a.metadata.szind = edata_szind_get(edata_a);
+	contents_a.metadata.slab = edata_slab_get(edata_a);
+	contents_a.metadata.is_head = edata_is_head_get(edata_a);
+	contents_a.metadata.state = edata_state_get(edata_a);
+	expect_false(rtree_write(tsdn, rtree, &rtree_ctx, PAGE, contents_a),
+	    "Unexpected rtree_write() failure");
+	expect_false(rtree_write(tsdn, rtree, &rtree_ctx, PAGE, contents_a),
+	    "Unexpected rtree_write() failure");
+	rtree_contents_t read_contents_a = rtree_read(tsdn, rtree, &rtree_ctx,
+	    PAGE);
+	expect_true(contents_a.edata == read_contents_a.edata
+	    && contents_a.metadata.szind == read_contents_a.metadata.szind
+	    && contents_a.metadata.slab == read_contents_a.metadata.slab
+	    && contents_a.metadata.is_head == read_contents_a.metadata.is_head
+	    && contents_a.metadata.state == read_contents_a.metadata.state,
+	    "rtree_read() should return previously set value");
+
+	rtree_contents_t contents_b;
+	contents_b.edata = edata_b;
+	contents_b.metadata.szind = edata_szind_get_maybe_invalid(edata_b);
+	contents_b.metadata.slab = edata_slab_get(edata_b);
+	contents_b.metadata.is_head = edata_is_head_get(edata_b);
+	contents_b.metadata.state = edata_state_get(edata_b);
+	expect_false(rtree_write(tsdn, rtree, &rtree_ctx, ~((uintptr_t)0),
+	    contents_b), "Unexpected rtree_write() failure");
+	rtree_contents_t read_contents_b = rtree_read(tsdn, rtree, &rtree_ctx,
+	    ~((uintptr_t)0));
+	assert_true(contents_b.edata == read_contents_b.edata
+	    && contents_b.metadata.szind == read_contents_b.metadata.szind
+	    && contents_b.metadata.slab == read_contents_b.metadata.slab
+	    && contents_b.metadata.is_head == read_contents_b.metadata.is_head
+	    && contents_b.metadata.state == read_contents_b.metadata.state,
+	    "rtree_read() should return previously set value");
+
+	base_delete(tsdn, base);
+}
+TEST_END
+
+TEST_BEGIN(test_rtree_bits) {
+	tsdn_t *tsdn = tsdn_fetch();
+	base_t *base = base_new(tsdn, 0, &ehooks_default_extent_hooks,
+	    /* metadata_use_hooks */ true);
+	expect_ptr_not_null(base, "Unexpected base_new failure");
+
+	uintptr_t keys[] = {PAGE, PAGE + 1,
+	    PAGE + (((uintptr_t)1) << LG_PAGE) - 1};
+	edata_t *edata_c = alloc_edata();
+	edata_init(edata_c, INVALID_ARENA_IND, NULL, 0, false, SC_NSIZES, 0,
+	    extent_state_active, false, false, EXTENT_PAI_PAC, EXTENT_NOT_HEAD);
+
+	rtree_t *rtree = &test_rtree;
+	rtree_ctx_t rtree_ctx;
+	rtree_ctx_data_init(&rtree_ctx);
+	expect_false(rtree_new(rtree, base, false),
+	    "Unexpected rtree_new() failure");
+
+	for (unsigned i = 0; i < sizeof(keys)/sizeof(uintptr_t); i++) {
+		rtree_contents_t contents;
+		contents.edata = edata_c;
+		contents.metadata.szind = SC_NSIZES;
+		contents.metadata.slab = false;
+		contents.metadata.is_head = false;
+		contents.metadata.state = extent_state_active;
+
+		expect_false(rtree_write(tsdn, rtree, &rtree_ctx, keys[i],
+		    contents), "Unexpected rtree_write() failure");
+		for (unsigned j = 0; j < sizeof(keys)/sizeof(uintptr_t); j++) {
+			expect_ptr_eq(rtree_read(tsdn, rtree, &rtree_ctx,
+			    keys[j]).edata, edata_c,
+			    "rtree_edata_read() should return previously set "
+			    "value and ignore insignificant key bits; i=%u, "
+			    "j=%u, set key=%#"FMTxPTR", get key=%#"FMTxPTR, i,
+			    j, keys[i], keys[j]);
+		}
+		expect_ptr_null(rtree_read(tsdn, rtree, &rtree_ctx,
+		    (((uintptr_t)2) << LG_PAGE)).edata,
+		    "Only leftmost rtree leaf should be set; i=%u", i);
+		rtree_clear(tsdn, rtree, &rtree_ctx, keys[i]);
+	}
+
+	base_delete(tsdn, base);
+}
+TEST_END
+
+TEST_BEGIN(test_rtree_random) {
+#define NSET 16
+#define SEED 42
+	sfmt_t *sfmt = init_gen_rand(SEED);
+	tsdn_t *tsdn = tsdn_fetch();
+
+	base_t *base = base_new(tsdn, 0, &ehooks_default_extent_hooks,
+	    /* metadata_use_hooks */ true);
+	expect_ptr_not_null(base, "Unexpected base_new failure");
+
+	uintptr_t keys[NSET];
+	rtree_t *rtree = &test_rtree;
+	rtree_ctx_t rtree_ctx;
+	rtree_ctx_data_init(&rtree_ctx);
+
+	edata_t *edata_d = alloc_edata();
+	edata_init(edata_d, INVALID_ARENA_IND, NULL, 0, false, SC_NSIZES, 0,
+	    extent_state_active, false, false, EXTENT_PAI_PAC, EXTENT_NOT_HEAD);
+
+	expect_false(rtree_new(rtree, base, false),
+	    "Unexpected rtree_new() failure");
+
+	for (unsigned i = 0; i < NSET; i++) {
+		keys[i] = (uintptr_t)gen_rand64(sfmt);
+		rtree_leaf_elm_t *elm = rtree_leaf_elm_lookup(tsdn, rtree,
+		    &rtree_ctx, keys[i], false, true);
+		expect_ptr_not_null(elm,
+		    "Unexpected rtree_leaf_elm_lookup() failure");
+		rtree_contents_t contents;
+		contents.edata = edata_d;
+		contents.metadata.szind = SC_NSIZES;
+		contents.metadata.slab = false;
+		contents.metadata.is_head = false;
+		contents.metadata.state = edata_state_get(edata_d);
+		rtree_leaf_elm_write(tsdn, rtree, elm, contents);
+		expect_ptr_eq(rtree_read(tsdn, rtree, &rtree_ctx,
+		    keys[i]).edata, edata_d,
+		    "rtree_edata_read() should return previously set value");
+	}
+	for (unsigned i = 0; i < NSET; i++) {
+		expect_ptr_eq(rtree_read(tsdn, rtree, &rtree_ctx,
+		    keys[i]).edata, edata_d,
+		    "rtree_edata_read() should return previously set value, "
+		    "i=%u", i);
+	}
+
+	for (unsigned i = 0; i < NSET; i++) {
+		rtree_clear(tsdn, rtree, &rtree_ctx, keys[i]);
+		expect_ptr_null(rtree_read(tsdn, rtree, &rtree_ctx,
+		    keys[i]).edata,
+		   "rtree_edata_read() should return previously set value");
+	}
+	for (unsigned i = 0; i < NSET; i++) {
+		expect_ptr_null(rtree_read(tsdn, rtree, &rtree_ctx,
+		    keys[i]).edata,
+		    "rtree_edata_read() should return previously set value");
+	}
+
+	base_delete(tsdn, base);
+	fini_gen_rand(sfmt);
+#undef NSET
+#undef SEED
+}
+TEST_END
+
+static void
+test_rtree_range_write(tsdn_t *tsdn, rtree_t *rtree, uintptr_t start,
+    uintptr_t end) {
+	rtree_ctx_t rtree_ctx;
+	rtree_ctx_data_init(&rtree_ctx);
+
+	edata_t *edata_e = alloc_edata();
+	edata_init(edata_e, INVALID_ARENA_IND, NULL, 0, false, SC_NSIZES, 0,
+	    extent_state_active, false, false, EXTENT_PAI_PAC, EXTENT_NOT_HEAD);
+	rtree_contents_t contents;
+	contents.edata = edata_e;
+	contents.metadata.szind = SC_NSIZES;
+	contents.metadata.slab = false;
+	contents.metadata.is_head = false;
+	contents.metadata.state = extent_state_active;
+
+	expect_false(rtree_write(tsdn, rtree, &rtree_ctx, start,
+	    contents), "Unexpected rtree_write() failure");
+	expect_false(rtree_write(tsdn, rtree, &rtree_ctx, end,
+	    contents), "Unexpected rtree_write() failure");
+
+	rtree_write_range(tsdn, rtree, &rtree_ctx, start, end, contents);
+	for (uintptr_t i = 0; i < ((end - start) >> LG_PAGE); i++) {
+		expect_ptr_eq(rtree_read(tsdn, rtree, &rtree_ctx,
+		    start + (i << LG_PAGE)).edata, edata_e,
+		    "rtree_edata_read() should return previously set value");
+	}
+	rtree_clear_range(tsdn, rtree, &rtree_ctx, start, end);
+	rtree_leaf_elm_t *elm;
+	for (uintptr_t i = 0; i < ((end - start) >> LG_PAGE); i++) {
+		elm = rtree_leaf_elm_lookup(tsdn, rtree, &rtree_ctx,
+		    start + (i << LG_PAGE), false, false);
+		expect_ptr_not_null(elm, "Should have been initialized.");
+		expect_ptr_null(rtree_leaf_elm_read(tsdn, rtree, elm,
+		    false).edata, "Should have been cleared.");
+	}
+}
+
+TEST_BEGIN(test_rtree_range) {
+	tsdn_t *tsdn = tsdn_fetch();
+	base_t *base = base_new(tsdn, 0, &ehooks_default_extent_hooks,
+	    /* metadata_use_hooks */ true);
+	expect_ptr_not_null(base, "Unexpected base_new failure");
+
+	rtree_t *rtree = &test_rtree;
+	expect_false(rtree_new(rtree, base, false),
+	    "Unexpected rtree_new() failure");
+
+	/* Not crossing rtree node boundary first. */
+	uintptr_t start = ZU(1) << rtree_leaf_maskbits();
+	uintptr_t end = start + (ZU(100) << LG_PAGE);
+	test_rtree_range_write(tsdn, rtree, start, end);
+
+	/* Crossing rtree node boundary. */
+	start = (ZU(1) << rtree_leaf_maskbits()) - (ZU(10) << LG_PAGE);
+	end = start + (ZU(100) << LG_PAGE);
+	assert_ptr_ne((void *)rtree_leafkey(start), (void *)rtree_leafkey(end),
+	    "The range should span across two rtree nodes");
+	test_rtree_range_write(tsdn, rtree, start, end);
+
+	base_delete(tsdn, base);
+}
+TEST_END
+
+int
+main(void) {
+	return test(
+	    test_rtree_read_empty,
+	    test_rtree_extrema,
+	    test_rtree_bits,
+	    test_rtree_random,
+	    test_rtree_range);
+}
diff --git a/deps/jemalloc/test/unit/safety_check.c b/deps/jemalloc/test/unit/safety_check.c
new file mode 100644
index 0000000..8472667
--- /dev/null
+++ b/deps/jemalloc/test/unit/safety_check.c
@@ -0,0 +1,163 @@
+#include "test/jemalloc_test.h"
+
+#include "jemalloc/internal/safety_check.h"
+
+/*
+ * Note that we get called through safety_check.sh, which turns on sampling for
+ * everything.
+ */
+
+bool fake_abort_called;
+void fake_abort(const char *message) {
+	(void)message;
+	fake_abort_called = true;
+}
+
+static void
+buffer_overflow_write(char *ptr, size_t size) {
+	/* Avoid overflow warnings. */
+	volatile size_t idx = size;
+	ptr[idx] = 0;
+}
+
+TEST_BEGIN(test_malloc_free_overflow) {
+	test_skip_if(!config_prof);
+	test_skip_if(!config_opt_safety_checks);
+
+	safety_check_set_abort(&fake_abort);
+	/* Buffer overflow! */
+	char* ptr = malloc(128);
+	buffer_overflow_write(ptr, 128);
+	free(ptr);
+	safety_check_set_abort(NULL);
+
+	expect_b_eq(fake_abort_called, true, "Redzone check didn't fire.");
+	fake_abort_called = false;
+}
+TEST_END
+
+TEST_BEGIN(test_mallocx_dallocx_overflow) {
+	test_skip_if(!config_prof);
+	test_skip_if(!config_opt_safety_checks);
+
+	safety_check_set_abort(&fake_abort);
+	/* Buffer overflow! */
+	char* ptr = mallocx(128, 0);
+	buffer_overflow_write(ptr, 128);
+	dallocx(ptr, 0);
+	safety_check_set_abort(NULL);
+
+	expect_b_eq(fake_abort_called, true, "Redzone check didn't fire.");
+	fake_abort_called = false;
+}
+TEST_END
+
+TEST_BEGIN(test_malloc_sdallocx_overflow) {
+	test_skip_if(!config_prof);
+	test_skip_if(!config_opt_safety_checks);
+
+	safety_check_set_abort(&fake_abort);
+	/* Buffer overflow! */
+	char* ptr = malloc(128);
+	buffer_overflow_write(ptr, 128);
+	sdallocx(ptr, 128, 0);
+	safety_check_set_abort(NULL);
+
+	expect_b_eq(fake_abort_called, true, "Redzone check didn't fire.");
+	fake_abort_called = false;
+}
+TEST_END
+
+TEST_BEGIN(test_realloc_overflow) {
+	test_skip_if(!config_prof);
+	test_skip_if(!config_opt_safety_checks);
+
+	safety_check_set_abort(&fake_abort);
+	/* Buffer overflow! */
+	char* ptr = malloc(128);
+	buffer_overflow_write(ptr, 128);
+	ptr = realloc(ptr, 129);
+	safety_check_set_abort(NULL);
+	free(ptr);
+
+	expect_b_eq(fake_abort_called, true, "Redzone check didn't fire.");
+	fake_abort_called = false;
+}
+TEST_END
+
+TEST_BEGIN(test_rallocx_overflow) {
+	test_skip_if(!config_prof);
+	test_skip_if(!config_opt_safety_checks);
+
+	safety_check_set_abort(&fake_abort);
+	/* Buffer overflow! */
+	char* ptr = malloc(128);
+	buffer_overflow_write(ptr, 128);
+	ptr = rallocx(ptr, 129, 0);
+	safety_check_set_abort(NULL);
+	free(ptr);
+
+	expect_b_eq(fake_abort_called, true, "Redzone check didn't fire.");
+	fake_abort_called = false;
+}
+TEST_END
+
+TEST_BEGIN(test_xallocx_overflow) {
+	test_skip_if(!config_prof);
+	test_skip_if(!config_opt_safety_checks);
+
+	safety_check_set_abort(&fake_abort);
+	/* Buffer overflow! */
+	char* ptr = malloc(128);
+	buffer_overflow_write(ptr, 128);
+	size_t result = xallocx(ptr, 129, 0, 0);
+	expect_zu_eq(result, 128, "");
+	free(ptr);
+	expect_b_eq(fake_abort_called, true, "Redzone check didn't fire.");
+	fake_abort_called = false;
+	safety_check_set_abort(NULL);
+}
+TEST_END
+
+TEST_BEGIN(test_realloc_no_overflow) {
+	char* ptr = malloc(128);
+	ptr = realloc(ptr, 256);
+	ptr[128] = 0;
+	ptr[255] = 0;
+	free(ptr);
+
+	ptr = malloc(128);
+	ptr = realloc(ptr, 64);
+	ptr[63] = 0;
+	ptr[0] = 0;
+	free(ptr);
+}
+TEST_END
+
+TEST_BEGIN(test_rallocx_no_overflow) {
+	char* ptr = malloc(128);
+	ptr = rallocx(ptr, 256, 0);
+	ptr[128] = 0;
+	ptr[255] = 0;
+	free(ptr);
+
+	ptr = malloc(128);
+	ptr = rallocx(ptr, 64, 0);
+	ptr[63] = 0;
+	ptr[0] = 0;
+	free(ptr);
+}
+TEST_END
+
+int
+main(void) {
+	return test(
+	    test_malloc_free_overflow,
+	    test_mallocx_dallocx_overflow,
+	    test_malloc_sdallocx_overflow,
+	    test_realloc_overflow,
+	    test_rallocx_overflow,
+	    test_xallocx_overflow,
+	    test_realloc_no_overflow,
+	    test_rallocx_no_overflow);
+}
diff --git a/deps/jemalloc/test/unit/safety_check.sh b/deps/jemalloc/test/unit/safety_check.sh
new file mode 100644
index 0000000..485f9bf
--- /dev/null
+++ b/deps/jemalloc/test/unit/safety_check.sh
@@ -0,0 +1,5 @@
+#!/bin/sh
+
+if [ "x${enable_prof}" = "x1" ] ; then
+  export MALLOC_CONF="prof:true,prof_active:true,lg_prof_sample:0"
+fi
diff --git a/deps/jemalloc/test/unit/san.c b/deps/jemalloc/test/unit/san.c
new file mode 100644
index 0000000..5b98f52
--- /dev/null
+++ b/deps/jemalloc/test/unit/san.c
@@ -0,0 +1,207 @@
+#include "test/jemalloc_test.h"
+#include "test/arena_util.h"
+#include "test/san.h"
+
+#include "jemalloc/internal/san.h"
+
+static void
+verify_extent_guarded(tsdn_t *tsdn, void *ptr) {
+	expect_true(extent_is_guarded(tsdn, ptr),
+	    "All extents should be guarded.");
+}
+
+#define MAX_SMALL_ALLOCATIONS 4096
+void *small_alloc[MAX_SMALL_ALLOCATIONS];
+
+/*
+ * This test allocates page sized slabs and checks that every two slabs have
+ * at least one page in between them. That page is supposed to be the guard
+ * page.
+ */
+TEST_BEGIN(test_guarded_small) {
+	test_skip_if(opt_prof);
+
+	tsdn_t *tsdn = tsd_tsdn(tsd_fetch());
+	unsigned npages = 16, pages_found = 0, ends_found = 0;
+	VARIABLE_ARRAY(uintptr_t, pages, npages);
+
+	/* Allocate to get sanitized pointers. */
+	size_t slab_sz = PAGE;
+	size_t sz = slab_sz / 8;
+	unsigned n_alloc = 0;
+	while (n_alloc < MAX_SMALL_ALLOCATIONS) {
+		void *ptr = malloc(sz);
+		expect_ptr_not_null(ptr, "Unexpected malloc() failure");
+		small_alloc[n_alloc] = ptr;
+		verify_extent_guarded(tsdn, ptr);
+		if ((uintptr_t)ptr % PAGE == 0) {
+			assert_u_lt(pages_found, npages,
+			    "Unexpectedly large number of page aligned allocs");
+			pages[pages_found++] = (uintptr_t)ptr;
+		}
+		if (((uintptr_t)ptr + (uintptr_t)sz) % PAGE == 0) {
+			ends_found++;
+		}
+		n_alloc++;
+		if (pages_found == npages && ends_found == npages) {
+			break;
+		}
+	}
+	/* Should found the ptrs being checked for overflow and underflow. */
+	expect_u_eq(pages_found, npages, "Could not found the expected pages.");
+	expect_u_eq(ends_found, npages, "Could not found the expected pages.");
+
+	/* Verify the pages are not continuous, i.e. separated by guards. */
+	for (unsigned i = 0; i < npages - 1; i++) {
+		for (unsigned j = i + 1; j < npages; j++) {
+			uintptr_t ptr_diff = pages[i] > pages[j] ?
+			    pages[i] - pages[j] : pages[j] - pages[i];
+			expect_zu_ge((size_t)ptr_diff, slab_sz + PAGE,
+			    "There should be at least one pages between "
+			    "guarded slabs");
+		}
+	}
+
+	for (unsigned i = 0; i < n_alloc + 1; i++) {
+		free(small_alloc[i]);
+	}
+}
+TEST_END
+
+TEST_BEGIN(test_guarded_large) {
+	tsdn_t *tsdn = tsd_tsdn(tsd_fetch());
+	unsigned nlarge = 32;
+	VARIABLE_ARRAY(uintptr_t, large, nlarge);
+
+	/* Allocate to get sanitized pointers. */
+	size_t large_sz = SC_LARGE_MINCLASS;
+	for (unsigned i = 0; i < nlarge; i++) {
+		void *ptr = malloc(large_sz);
+		verify_extent_guarded(tsdn, ptr);
+		expect_ptr_not_null(ptr, "Unexpected malloc() failure");
+		large[i] = (uintptr_t)ptr;
+	}
+
+	/* Verify the pages are not continuous, i.e. separated by guards. */
+	for (unsigned i = 0; i < nlarge; i++) {
+		for (unsigned j = i + 1; j < nlarge; j++) {
+			uintptr_t ptr_diff = large[i] > large[j] ?
+			    large[i] - large[j] : large[j] - large[i];
+			expect_zu_ge((size_t)ptr_diff, large_sz + 2 * PAGE,
+			    "There should be at least two pages between "
+			    " guarded large allocations");
+		}
+	}
+
+	for (unsigned i = 0; i < nlarge; i++) {
+		free((void *)large[i]);
+	}
+}
+TEST_END
+
+static void
+verify_pdirty(unsigned arena_ind, uint64_t expected) {
+	uint64_t pdirty = get_arena_pdirty(arena_ind);
+	expect_u64_eq(pdirty, expected / PAGE,
+	    "Unexpected dirty page amount.");
+}
+
+static void
+verify_pmuzzy(unsigned arena_ind, uint64_t expected) {
+	uint64_t pmuzzy = get_arena_pmuzzy(arena_ind);
+	expect_u64_eq(pmuzzy, expected / PAGE,
+	    "Unexpected muzzy page amount.");
+}
+
+TEST_BEGIN(test_guarded_decay) {
+	unsigned arena_ind = do_arena_create(-1, -1);
+	do_decay(arena_ind);
+	do_purge(arena_ind);
+
+	verify_pdirty(arena_ind, 0);
+	verify_pmuzzy(arena_ind, 0);
+
+	/* Verify that guarded extents as dirty. */
+	size_t sz1 = PAGE, sz2 = PAGE * 2;
+	/* W/o maps_coalesce, guarded extents are unguarded eagerly. */
+	size_t add_guard_size = maps_coalesce ? 0 : SAN_PAGE_GUARDS_SIZE;
+	generate_dirty(arena_ind, sz1);
+	verify_pdirty(arena_ind, sz1 + add_guard_size);
+	verify_pmuzzy(arena_ind, 0);
+
+	/* Should reuse the first extent. */
+	generate_dirty(arena_ind, sz1);
+	verify_pdirty(arena_ind, sz1 + add_guard_size);
+	verify_pmuzzy(arena_ind, 0);
+
+	/* Should not reuse; expect new dirty pages. */
+	generate_dirty(arena_ind, sz2);
+	verify_pdirty(arena_ind, sz1 + sz2 + 2 * add_guard_size);
+	verify_pmuzzy(arena_ind, 0);
+
+	tsdn_t *tsdn = tsd_tsdn(tsd_fetch());
+	int flags = MALLOCX_ARENA(arena_ind) | MALLOCX_TCACHE_NONE;
+
+	/* Should reuse dirty extents for the two mallocx. */
+	void *p1 = do_mallocx(sz1, flags);
+	verify_extent_guarded(tsdn, p1);
+	verify_pdirty(arena_ind, sz2 + add_guard_size);
+
+	void *p2 = do_mallocx(sz2, flags);
+	verify_extent_guarded(tsdn, p2);
+	verify_pdirty(arena_ind, 0);
+	verify_pmuzzy(arena_ind, 0);
+
+	dallocx(p1, flags);
+	verify_pdirty(arena_ind, sz1 + add_guard_size);
+	dallocx(p2, flags);
+	verify_pdirty(arena_ind, sz1 + sz2 + 2 * add_guard_size);
+	verify_pmuzzy(arena_ind, 0);
+
+	do_purge(arena_ind);
+	verify_pdirty(arena_ind, 0);
+	verify_pmuzzy(arena_ind, 0);
+
+	if (config_stats) {
+		expect_u64_eq(get_arena_npurge(arena_ind), 1,
+		    "Expected purging to occur");
+		expect_u64_eq(get_arena_dirty_npurge(arena_ind), 1,
+		    "Expected purging to occur");
+		expect_u64_eq(get_arena_dirty_purged(arena_ind),
+		    (sz1 + sz2 + 2 * add_guard_size) / PAGE,
+		    "Expected purging to occur");
+		expect_u64_eq(get_arena_muzzy_npurge(arena_ind), 0,
+		    "Expected purging to occur");
+	}
+
+	if (opt_retain) {
+		/*
+		 * With retain, guarded extents are not mergable and will be
+		 * cached in ecache_retained.  They should be reused.
+		 */
+		void *new_p1 = do_mallocx(sz1, flags);
+		verify_extent_guarded(tsdn, p1);
+		expect_ptr_eq(p1, new_p1, "Expect to reuse p1");
+
+		void *new_p2 = do_mallocx(sz2, flags);
+		verify_extent_guarded(tsdn, p2);
+		expect_ptr_eq(p2, new_p2, "Expect to reuse p2");
+
+		dallocx(new_p1, flags);
+		verify_pdirty(arena_ind, sz1 + add_guard_size);
+		dallocx(new_p2, flags);
+		verify_pdirty(arena_ind, sz1 + sz2 + 2 * add_guard_size);
+		verify_pmuzzy(arena_ind, 0);
+	}
+
+	do_arena_destroy(arena_ind);
+}
+TEST_END
+
+int
+main(void) {
+	return test(
+	    test_guarded_small,
+	    test_guarded_large,
+	    test_guarded_decay);
+}
diff --git a/deps/jemalloc/test/unit/san.sh b/deps/jemalloc/test/unit/san.sh
new file mode 100644
index 0000000..933b4a4
--- /dev/null
+++ b/deps/jemalloc/test/unit/san.sh
@@ -0,0 +1,3 @@
+#!/bin/sh
+
+export MALLOC_CONF="san_guard_large:1,san_guard_small:1"
diff --git a/deps/jemalloc/test/unit/san_bump.c b/deps/jemalloc/test/unit/san_bump.c
new file mode 100644
index 0000000..cafa37f
--- /dev/null
+++ b/deps/jemalloc/test/unit/san_bump.c
@@ -0,0 +1,111 @@
+#include "test/jemalloc_test.h"
+#include "test/arena_util.h"
+
+#include "jemalloc/internal/arena_structs.h"
+#include "jemalloc/internal/san_bump.h"
+
+TEST_BEGIN(test_san_bump_alloc) {
+	test_skip_if(!maps_coalesce || !opt_retain);
+
+	tsdn_t *tsdn = tsdn_fetch();
+
+	san_bump_alloc_t sba;
+	san_bump_alloc_init(&sba);
+
+	unsigned arena_ind = do_arena_create(0, 0);
+	assert_u_ne(arena_ind, UINT_MAX, "Failed to create an arena");
+
+	arena_t *arena = arena_get(tsdn, arena_ind, false);
+	pac_t *pac = &arena->pa_shard.pac;
+
+	size_t alloc_size = PAGE * 16;
+	size_t alloc_n = alloc_size / sizeof(unsigned);
+	edata_t* edata = san_bump_alloc(tsdn, &sba, pac, pac_ehooks_get(pac),
+	    alloc_size, /* zero */ false);
+
+	expect_ptr_not_null(edata, "Failed to allocate edata");
+	expect_u_eq(edata_arena_ind_get(edata), arena_ind,
+	    "Edata was assigned an incorrect arena id");
+	expect_zu_eq(edata_size_get(edata), alloc_size,
+	    "Allocated edata of incorrect size");
+	expect_false(edata_slab_get(edata),
+	    "Bump allocator incorrectly assigned 'slab' to true");
+	expect_true(edata_committed_get(edata), "Edata is not committed");
+
+	void *ptr = edata_addr_get(edata);
+	expect_ptr_not_null(ptr, "Edata was assigned an invalid address");
+	/* Test that memory is allocated; no guard pages are misplaced */
+	for (unsigned i = 0; i < alloc_n; ++i) {
+		((unsigned *)ptr)[i] = 1;
+	}
+
+	size_t alloc_size2 = PAGE * 28;
+	size_t alloc_n2 = alloc_size / sizeof(unsigned);
+	edata_t *edata2 = san_bump_alloc(tsdn, &sba, pac, pac_ehooks_get(pac),
+	    alloc_size2, /* zero */ true);
+
+	expect_ptr_not_null(edata2, "Failed to allocate edata");
+	expect_u_eq(edata_arena_ind_get(edata2), arena_ind,
+	    "Edata was assigned an incorrect arena id");
+	expect_zu_eq(edata_size_get(edata2), alloc_size2,
+	    "Allocated edata of incorrect size");
+	expect_false(edata_slab_get(edata2),
+	    "Bump allocator incorrectly assigned 'slab' to true");
+	expect_true(edata_committed_get(edata2), "Edata is not committed");
+
+	void *ptr2 = edata_addr_get(edata2);
+	expect_ptr_not_null(ptr, "Edata was assigned an invalid address");
+
+	uintptr_t ptrdiff = ptr2 > ptr ? (uintptr_t)ptr2 - (uintptr_t)ptr
+	    : (uintptr_t)ptr - (uintptr_t)ptr2;
+	size_t between_allocs = (size_t)ptrdiff - alloc_size;
+
+	expect_zu_ge(between_allocs, PAGE,
+	    "Guard page between allocs is missing");
+
+	for (unsigned i = 0; i < alloc_n2; ++i) {
+		expect_u_eq(((unsigned *)ptr2)[i], 0, "Memory is not zeroed");
+	}
+}
+TEST_END
+
+TEST_BEGIN(test_large_alloc_size) {
+	test_skip_if(!maps_coalesce || !opt_retain);
+
+	tsdn_t *tsdn = tsdn_fetch();
+
+	san_bump_alloc_t sba;
+	san_bump_alloc_init(&sba);
+
+	unsigned arena_ind = do_arena_create(0, 0);
+	assert_u_ne(arena_ind, UINT_MAX, "Failed to create an arena");
+
+	arena_t *arena = arena_get(tsdn, arena_ind, false);
+	pac_t *pac = &arena->pa_shard.pac;
+
+	size_t alloc_size = SBA_RETAINED_ALLOC_SIZE * 2;
+	edata_t* edata = san_bump_alloc(tsdn, &sba, pac, pac_ehooks_get(pac),
+	    alloc_size, /* zero */ false);
+	expect_u_eq(edata_arena_ind_get(edata), arena_ind,
+	    "Edata was assigned an incorrect arena id");
+	expect_zu_eq(edata_size_get(edata), alloc_size,
+	    "Allocated edata of incorrect size");
+	expect_false(edata_slab_get(edata),
+	    "Bump allocator incorrectly assigned 'slab' to true");
+	expect_true(edata_committed_get(edata), "Edata is not committed");
+
+	void *ptr = edata_addr_get(edata);
+	expect_ptr_not_null(ptr, "Edata was assigned an invalid address");
+	/* Test that memory is allocated; no guard pages are misplaced */
+	for (unsigned i = 0; i < alloc_size / PAGE; ++i) {
+		*((char *)ptr + PAGE * i) = 1;
+	}
+}
+TEST_END
+
+int
+main(void) {
+	return test(
+	    test_san_bump_alloc,
+	    test_large_alloc_size);
+}
diff --git a/deps/jemalloc/test/unit/sc.c b/deps/jemalloc/test/unit/sc.c
new file mode 100644
index 0000000..d207481
--- /dev/null
+++ b/deps/jemalloc/test/unit/sc.c
@@ -0,0 +1,33 @@
+#include "test/jemalloc_test.h"
+
+TEST_BEGIN(test_update_slab_size) {
+	sc_data_t data;
+	memset(&data, 0, sizeof(data));
+	sc_data_init(&data);
+	sc_t *tiny = &data.sc[0];
+	size_t tiny_size = (ZU(1) << tiny->lg_base)
+	    + (ZU(tiny->ndelta) << tiny->lg_delta);
+	size_t pgs_too_big = (tiny_size * BITMAP_MAXBITS + PAGE - 1) / PAGE + 1;
+	sc_data_update_slab_size(&data, tiny_size, tiny_size, (int)pgs_too_big);
+	expect_zu_lt((size_t)tiny->pgs, pgs_too_big, "Allowed excessive pages");
+
+	sc_data_update_slab_size(&data, 1, 10 * PAGE, 1);
+	for (int i = 0; i < data.nbins; i++) {
+		sc_t *sc = &data.sc[i];
+		size_t reg_size = (ZU(1) << sc->lg_base)
+		    + (ZU(sc->ndelta) << sc->lg_delta);
+		if (reg_size <= PAGE) {
+			expect_d_eq(sc->pgs, 1, "Ignored valid page size hint");
+		} else {
+			expect_d_gt(sc->pgs, 1,
+			    "Allowed invalid page size hint");
+		}
+	}
+}
+TEST_END
+
+int
+main(void) {
+	return test(
+	    test_update_slab_size);
+}
diff --git a/deps/jemalloc/test/unit/sec.c b/deps/jemalloc/test/unit/sec.c
new file mode 100644
index 0000000..f3ec403
--- /dev/null
+++ b/deps/jemalloc/test/unit/sec.c
@@ -0,0 +1,634 @@
+#include "test/jemalloc_test.h"
+
+#include "jemalloc/internal/sec.h"
+
+typedef struct pai_test_allocator_s pai_test_allocator_t;
+struct pai_test_allocator_s {
+	pai_t pai;
+	bool alloc_fail;
+	size_t alloc_count;
+	size_t alloc_batch_count;
+	size_t dalloc_count;
+	size_t dalloc_batch_count;
+	/*
+	 * We use a simple bump allocator as the implementation.  This isn't
+	 * *really* correct, since we may allow expansion into a subsequent
+	 * allocation, but it's not like the SEC is really examining the
+	 * pointers it gets back; this is mostly just helpful for debugging.
+	 */
+	uintptr_t next_ptr;
+	size_t expand_count;
+	bool expand_return_value;
+	size_t shrink_count;
+	bool shrink_return_value;
+};
+
+static void
+test_sec_init(sec_t *sec, pai_t *fallback, size_t nshards, size_t max_alloc,
+    size_t max_bytes) {
+	sec_opts_t opts;
+	opts.nshards = 1;
+	opts.max_alloc = max_alloc;
+	opts.max_bytes = max_bytes;
+	/*
+	 * Just choose reasonable defaults for these; most tests don't care so
+	 * long as they're something reasonable.
+	 */
+	opts.bytes_after_flush = max_bytes / 2;
+	opts.batch_fill_extra = 4;
+
+	/*
+	 * We end up leaking this base, but that's fine; this test is
+	 * short-running, and SECs are arena-scoped in reality.
+	 */
+	base_t *base = base_new(TSDN_NULL, /* ind */ 123,
+	    &ehooks_default_extent_hooks, /* metadata_use_hooks */ true);
+
+	bool err = sec_init(TSDN_NULL, sec, base, fallback, &opts);
+	assert_false(err, "Unexpected initialization failure");
+	assert_u_ge(sec->npsizes, 0, "Zero size classes allowed for caching");
+}
+
+static inline edata_t *
+pai_test_allocator_alloc(tsdn_t *tsdn, pai_t *self, size_t size,
+    size_t alignment, bool zero, bool guarded, bool frequent_reuse,
+    bool *deferred_work_generated) {
+	assert(!guarded);
+	pai_test_allocator_t *ta = (pai_test_allocator_t *)self;
+	if (ta->alloc_fail) {
+		return NULL;
+	}
+	edata_t *edata = malloc(sizeof(edata_t));
+	assert_ptr_not_null(edata, "");
+	ta->next_ptr += alignment - 1;
+	edata_init(edata, /* arena_ind */ 0,
+	    (void *)(ta->next_ptr & ~(alignment - 1)), size,
+	    /* slab */ false,
+	    /* szind */ 0, /* sn */ 1, extent_state_active, /* zero */ zero,
+	    /* comitted */ true, /* ranged */ false, EXTENT_NOT_HEAD);
+	ta->next_ptr += size;
+	ta->alloc_count++;
+	return edata;
+}
+
+static inline size_t
+pai_test_allocator_alloc_batch(tsdn_t *tsdn, pai_t *self, size_t size,
+    size_t nallocs, edata_list_active_t *results,
+    bool *deferred_work_generated) {
+	pai_test_allocator_t *ta = (pai_test_allocator_t *)self;
+	if (ta->alloc_fail) {
+		return 0;
+	}
+	for (size_t i = 0; i < nallocs; i++) {
+		edata_t *edata = malloc(sizeof(edata_t));
+		assert_ptr_not_null(edata, "");
+		edata_init(edata, /* arena_ind */ 0,
+		    (void *)ta->next_ptr, size,
+		    /* slab */ false, /* szind */ 0, /* sn */ 1,
+		    extent_state_active, /* zero */ false, /* comitted */ true,
+		    /* ranged */ false, EXTENT_NOT_HEAD);
+		ta->next_ptr += size;
+		ta->alloc_batch_count++;
+		edata_list_active_append(results, edata);
+	}
+	return nallocs;
+}
+
+static bool
+pai_test_allocator_expand(tsdn_t *tsdn, pai_t *self, edata_t *edata,
+    size_t old_size, size_t new_size, bool zero,
+    bool *deferred_work_generated) {
+	pai_test_allocator_t *ta = (pai_test_allocator_t *)self;
+	ta->expand_count++;
+	return ta->expand_return_value;
+}
+
+static bool
+pai_test_allocator_shrink(tsdn_t *tsdn, pai_t *self, edata_t *edata,
+    size_t old_size, size_t new_size, bool *deferred_work_generated) {
+	pai_test_allocator_t *ta = (pai_test_allocator_t *)self;
+	ta->shrink_count++;
+	return ta->shrink_return_value;
+}
+
+static void
+pai_test_allocator_dalloc(tsdn_t *tsdn, pai_t *self, edata_t *edata,
+    bool *deferred_work_generated) {
+	pai_test_allocator_t *ta = (pai_test_allocator_t *)self;
+	ta->dalloc_count++;
+	free(edata);
+}
+
+static void
+pai_test_allocator_dalloc_batch(tsdn_t *tsdn, pai_t *self,
+    edata_list_active_t *list, bool *deferred_work_generated) {
+	pai_test_allocator_t *ta = (pai_test_allocator_t *)self;
+
+	edata_t *edata;
+	while ((edata = edata_list_active_first(list)) != NULL) {
+		edata_list_active_remove(list, edata);
+		ta->dalloc_batch_count++;
+		free(edata);
+	}
+}
+
+static inline void
+pai_test_allocator_init(pai_test_allocator_t *ta) {
+	ta->alloc_fail = false;
+	ta->alloc_count = 0;
+	ta->alloc_batch_count = 0;
+	ta->dalloc_count = 0;
+	ta->dalloc_batch_count = 0;
+	/* Just don't start the edata at 0. */
+	ta->next_ptr = 10 * PAGE;
+	ta->expand_count = 0;
+	ta->expand_return_value = false;
+	ta->shrink_count = 0;
+	ta->shrink_return_value = false;
+	ta->pai.alloc = &pai_test_allocator_alloc;
+	ta->pai.alloc_batch = &pai_test_allocator_alloc_batch;
+	ta->pai.expand = &pai_test_allocator_expand;
+	ta->pai.shrink = &pai_test_allocator_shrink;
+	ta->pai.dalloc = &pai_test_allocator_dalloc;
+	ta->pai.dalloc_batch = &pai_test_allocator_dalloc_batch;
+}
+
+TEST_BEGIN(test_reuse) {
+	pai_test_allocator_t ta;
+	pai_test_allocator_init(&ta);
+	sec_t sec;
+	/*
+	 * We can't use the "real" tsd, since we malloc within the test
+	 * allocator hooks; we'd get lock inversion crashes.  Eventually, we
+	 * should have a way to mock tsds, but for now just don't do any
+	 * lock-order checking.
+	 */
+	tsdn_t *tsdn = TSDN_NULL;
+	/*
+	 * 11 allocs apiece of 1-PAGE and 2-PAGE objects means that we should be
+	 * able to get to 33 pages in the cache before triggering a flush.  We
+	 * set the flush liimt to twice this amount, to avoid accidentally
+	 * triggering a flush caused by the batch-allocation down the cache fill
+	 * pathway disrupting ordering.
+	 */
+	enum { NALLOCS = 11 };
+	edata_t *one_page[NALLOCS];
+	edata_t *two_page[NALLOCS];
+	bool deferred_work_generated = false;
+	test_sec_init(&sec, &ta.pai, /* nshards */ 1, /* max_alloc */ 2 * PAGE,
+	    /* max_bytes */ 2 * (NALLOCS * PAGE + NALLOCS * 2 * PAGE));
+	for (int i = 0; i < NALLOCS; i++) {
+		one_page[i] = pai_alloc(tsdn, &sec.pai, PAGE, PAGE,
+		    /* zero */ false, /* guarded */ false, /* frequent_reuse */
+		    false, &deferred_work_generated);
+		expect_ptr_not_null(one_page[i], "Unexpected alloc failure");
+		two_page[i] = pai_alloc(tsdn, &sec.pai, 2 * PAGE, PAGE,
+		    /* zero */ false, /* guarded */ false, /* frequent_reuse */
+		    false, &deferred_work_generated);
+		expect_ptr_not_null(one_page[i], "Unexpected alloc failure");
+	}
+	expect_zu_eq(0, ta.alloc_count, "Should be using batch allocs");
+	size_t max_allocs = ta.alloc_count + ta.alloc_batch_count;
+	expect_zu_le(2 * NALLOCS, max_allocs,
+	    "Incorrect number of allocations");
+	expect_zu_eq(0, ta.dalloc_count,
+	    "Incorrect number of allocations");
+	/*
+	 * Free in a different order than we allocated, to make sure free-list
+	 * separation works correctly.
+	 */
+	for (int i = NALLOCS - 1; i >= 0; i--) {
+		pai_dalloc(tsdn, &sec.pai, one_page[i],
+		    &deferred_work_generated);
+	}
+	for (int i = NALLOCS - 1; i >= 0; i--) {
+		pai_dalloc(tsdn, &sec.pai, two_page[i],
+		    &deferred_work_generated);
+	}
+	expect_zu_eq(max_allocs, ta.alloc_count + ta.alloc_batch_count,
+	    "Incorrect number of allocations");
+	expect_zu_eq(0, ta.dalloc_count,
+	    "Incorrect number of allocations");
+	/*
+	 * Check that the n'th most recent deallocated extent is returned for
+	 * the n'th alloc request of a given size.
+	 */
+	for (int i = 0; i < NALLOCS; i++) {
+		edata_t *alloc1 = pai_alloc(tsdn, &sec.pai, PAGE, PAGE,
+		    /* zero */ false, /* guarded */ false, /* frequent_reuse */
+		    false, &deferred_work_generated);
+		edata_t *alloc2 = pai_alloc(tsdn, &sec.pai, 2 * PAGE, PAGE,
+		    /* zero */ false, /* guarded */ false, /* frequent_reuse */
+		    false, &deferred_work_generated);
+		expect_ptr_eq(one_page[i], alloc1,
+		    "Got unexpected allocation");
+		expect_ptr_eq(two_page[i], alloc2,
+		    "Got unexpected allocation");
+	}
+	expect_zu_eq(max_allocs, ta.alloc_count + ta.alloc_batch_count,
+	    "Incorrect number of allocations");
+	expect_zu_eq(0, ta.dalloc_count,
+	    "Incorrect number of allocations");
+}
+TEST_END
+
+
+TEST_BEGIN(test_auto_flush) {
+	pai_test_allocator_t ta;
+	pai_test_allocator_init(&ta);
+	sec_t sec;
+	/* See the note above -- we can't use the real tsd. */
+	tsdn_t *tsdn = TSDN_NULL;
+	/*
+	 * 10-allocs apiece of 1-PAGE and 2-PAGE objects means that we should be
+	 * able to get to 30 pages in the cache before triggering a flush.  The
+	 * choice of NALLOCS here is chosen to match the batch allocation
+	 * default (4 extra + 1 == 5; so 10 allocations leaves the cache exactly
+	 * empty, even in the presence of batch allocation on fill).
+	 * Eventually, once our allocation batching strategies become smarter,
+	 * this should change.
+	 */
+	enum { NALLOCS = 10 };
+	edata_t *extra_alloc;
+	edata_t *allocs[NALLOCS];
+	bool deferred_work_generated = false;
+	test_sec_init(&sec, &ta.pai, /* nshards */ 1, /* max_alloc */ PAGE,
+	    /* max_bytes */ NALLOCS * PAGE);
+	for (int i = 0; i < NALLOCS; i++) {
+		allocs[i] = pai_alloc(tsdn, &sec.pai, PAGE, PAGE,
+		    /* zero */ false, /* guarded */ false, /* frequent_reuse */
+		    false, &deferred_work_generated);
+		expect_ptr_not_null(allocs[i], "Unexpected alloc failure");
+	}
+	extra_alloc = pai_alloc(tsdn, &sec.pai, PAGE, PAGE, /* zero */ false,
+	    /* guarded */ false, /* frequent_reuse */ false,
+	    &deferred_work_generated);
+	expect_ptr_not_null(extra_alloc, "Unexpected alloc failure");
+	size_t max_allocs = ta.alloc_count + ta.alloc_batch_count;
+	expect_zu_le(NALLOCS + 1, max_allocs,
+	    "Incorrect number of allocations");
+	expect_zu_eq(0, ta.dalloc_count,
+	    "Incorrect number of allocations");
+	/* Free until the SEC is full, but should not have flushed yet. */
+	for (int i = 0; i < NALLOCS; i++) {
+		pai_dalloc(tsdn, &sec.pai, allocs[i], &deferred_work_generated);
+	}
+	expect_zu_le(NALLOCS + 1, max_allocs,
+	    "Incorrect number of allocations");
+	expect_zu_eq(0, ta.dalloc_count,
+	    "Incorrect number of allocations");
+	/*
+	 * Free the extra allocation; this should trigger a flush.  The internal
+	 * flushing logic is allowed to get complicated; for now, we rely on our
+	 * whitebox knowledge of the fact that the SEC flushes bins in their
+	 * entirety when it decides to do so, and it has only one bin active
+	 * right now.
+	 */
+	pai_dalloc(tsdn, &sec.pai, extra_alloc, &deferred_work_generated);
+	expect_zu_eq(max_allocs, ta.alloc_count + ta.alloc_batch_count,
+	    "Incorrect number of allocations");
+	expect_zu_eq(0, ta.dalloc_count,
+	    "Incorrect number of (non-batch) deallocations");
+	expect_zu_eq(NALLOCS + 1, ta.dalloc_batch_count,
+	    "Incorrect number of batch deallocations");
+}
+TEST_END
+
+/*
+ * A disable and a flush are *almost* equivalent; the only difference is what
+ * happens afterwards; disabling disallows all future caching as well.
+ */
+static void
+do_disable_flush_test(bool is_disable) {
+	pai_test_allocator_t ta;
+	pai_test_allocator_init(&ta);
+	sec_t sec;
+	/* See the note above -- we can't use the real tsd. */
+	tsdn_t *tsdn = TSDN_NULL;
+
+	enum { NALLOCS = 11 };
+	edata_t *allocs[NALLOCS];
+	bool deferred_work_generated = false;
+	test_sec_init(&sec, &ta.pai, /* nshards */ 1, /* max_alloc */ PAGE,
+	    /* max_bytes */ NALLOCS * PAGE);
+	for (int i = 0; i < NALLOCS; i++) {
+		allocs[i] = pai_alloc(tsdn, &sec.pai, PAGE, PAGE,
+		    /* zero */ false, /* guarded */ false, /* frequent_reuse */
+		    false, &deferred_work_generated);
+		expect_ptr_not_null(allocs[i], "Unexpected alloc failure");
+	}
+	/* Free all but the last aloc. */
+	for (int i = 0; i < NALLOCS - 1; i++) {
+		pai_dalloc(tsdn, &sec.pai, allocs[i], &deferred_work_generated);
+	}
+	size_t max_allocs = ta.alloc_count + ta.alloc_batch_count;
+
+	expect_zu_le(NALLOCS, max_allocs, "Incorrect number of allocations");
+	expect_zu_eq(0, ta.dalloc_count,
+	    "Incorrect number of allocations");
+
+	if (is_disable) {
+		sec_disable(tsdn, &sec);
+	} else {
+		sec_flush(tsdn, &sec);
+	}
+
+	expect_zu_eq(max_allocs, ta.alloc_count + ta.alloc_batch_count,
+	    "Incorrect number of allocations");
+	expect_zu_eq(0, ta.dalloc_count,
+	    "Incorrect number of (non-batch) deallocations");
+	expect_zu_le(NALLOCS - 1, ta.dalloc_batch_count,
+	    "Incorrect number of batch deallocations");
+	size_t old_dalloc_batch_count = ta.dalloc_batch_count;
+
+	/*
+	 * If we free into a disabled SEC, it should forward to the fallback.
+	 * Otherwise, the SEC should accept the allocation.
+	 */
+	pai_dalloc(tsdn, &sec.pai, allocs[NALLOCS - 1],
+	    &deferred_work_generated);
+
+	expect_zu_eq(max_allocs, ta.alloc_count + ta.alloc_batch_count,
+	    "Incorrect number of allocations");
+	expect_zu_eq(is_disable ? 1 : 0, ta.dalloc_count,
+	    "Incorrect number of (non-batch) deallocations");
+	expect_zu_eq(old_dalloc_batch_count, ta.dalloc_batch_count,
+	    "Incorrect number of batch deallocations");
+}
+
+TEST_BEGIN(test_disable) {
+	do_disable_flush_test(/* is_disable */ true);
+}
+TEST_END
+
+TEST_BEGIN(test_flush) {
+	do_disable_flush_test(/* is_disable */ false);
+}
+TEST_END
+
+TEST_BEGIN(test_max_alloc_respected) {
+	pai_test_allocator_t ta;
+	pai_test_allocator_init(&ta);
+	sec_t sec;
+	/* See the note above -- we can't use the real tsd. */
+	tsdn_t *tsdn = TSDN_NULL;
+
+	size_t max_alloc = 2 * PAGE;
+	size_t attempted_alloc = 3 * PAGE;
+
+	bool deferred_work_generated = false;
+
+	test_sec_init(&sec, &ta.pai, /* nshards */ 1, max_alloc,
+	    /* max_bytes */ 1000 * PAGE);
+
+	for (size_t i = 0; i < 100; i++) {
+		expect_zu_eq(i, ta.alloc_count,
+		    "Incorrect number of allocations");
+		expect_zu_eq(i, ta.dalloc_count,
+		    "Incorrect number of deallocations");
+		edata_t *edata = pai_alloc(tsdn, &sec.pai, attempted_alloc,
+		    PAGE, /* zero */ false, /* guarded */ false,
+		    /* frequent_reuse */ false, &deferred_work_generated);
+		expect_ptr_not_null(edata, "Unexpected alloc failure");
+		expect_zu_eq(i + 1, ta.alloc_count,
+		    "Incorrect number of allocations");
+		expect_zu_eq(i, ta.dalloc_count,
+		    "Incorrect number of deallocations");
+		pai_dalloc(tsdn, &sec.pai, edata, &deferred_work_generated);
+	}
+}
+TEST_END
+
+TEST_BEGIN(test_expand_shrink_delegate) {
+	/*
+	 * Expand and shrink shouldn't affect sec state; they should just
+	 * delegate to the fallback PAI.
+	 */
+	pai_test_allocator_t ta;
+	pai_test_allocator_init(&ta);
+	sec_t sec;
+	/* See the note above -- we can't use the real tsd. */
+	tsdn_t *tsdn = TSDN_NULL;
+
+	bool deferred_work_generated = false;
+
+	test_sec_init(&sec, &ta.pai, /* nshards */ 1, /* max_alloc */ 10 * PAGE,
+	    /* max_bytes */ 1000 * PAGE);
+	edata_t *edata = pai_alloc(tsdn, &sec.pai, PAGE, PAGE,
+	    /* zero */ false, /* guarded */ false, /* frequent_reuse */ false,
+	    &deferred_work_generated);
+	expect_ptr_not_null(edata, "Unexpected alloc failure");
+
+	bool err = pai_expand(tsdn, &sec.pai, edata, PAGE, 4 * PAGE,
+	    /* zero */ false, &deferred_work_generated);
+	expect_false(err, "Unexpected expand failure");
+	expect_zu_eq(1, ta.expand_count, "");
+	ta.expand_return_value = true;
+	err = pai_expand(tsdn, &sec.pai, edata, 4 * PAGE, 3 * PAGE,
+	    /* zero */ false, &deferred_work_generated);
+	expect_true(err, "Unexpected expand success");
+	expect_zu_eq(2, ta.expand_count, "");
+
+	err = pai_shrink(tsdn, &sec.pai, edata, 4 * PAGE, 2 * PAGE,
+	    &deferred_work_generated);
+	expect_false(err, "Unexpected shrink failure");
+	expect_zu_eq(1, ta.shrink_count, "");
+	ta.shrink_return_value = true;
+	err = pai_shrink(tsdn, &sec.pai, edata, 2 * PAGE, PAGE,
+	    &deferred_work_generated);
+	expect_true(err, "Unexpected shrink success");
+	expect_zu_eq(2, ta.shrink_count, "");
+}
+TEST_END
+
+TEST_BEGIN(test_nshards_0) {
+	pai_test_allocator_t ta;
+	pai_test_allocator_init(&ta);
+	sec_t sec;
+	/* See the note above -- we can't use the real tsd. */
+	tsdn_t *tsdn = TSDN_NULL;
+	base_t *base = base_new(TSDN_NULL, /* ind */ 123,
+	    &ehooks_default_extent_hooks, /* metadata_use_hooks */ true);
+
+	sec_opts_t opts = SEC_OPTS_DEFAULT;
+	opts.nshards = 0;
+	sec_init(TSDN_NULL, &sec, base, &ta.pai, &opts);
+
+	bool deferred_work_generated = false;
+	edata_t *edata = pai_alloc(tsdn, &sec.pai, PAGE, PAGE,
+	    /* zero */ false, /* guarded */ false, /* frequent_reuse */ false,
+	    &deferred_work_generated);
+	pai_dalloc(tsdn, &sec.pai, edata, &deferred_work_generated);
+
+	/* Both operations should have gone directly to the fallback. */
+	expect_zu_eq(1, ta.alloc_count, "");
+	expect_zu_eq(1, ta.dalloc_count, "");
+}
+TEST_END
+
+static void
+expect_stats_pages(tsdn_t *tsdn, sec_t *sec, size_t npages) {
+	sec_stats_t stats;
+	/*
+	 * Check that the stats merging accumulates rather than overwrites by
+	 * putting some (made up) data there to begin with.
+	 */
+	stats.bytes = 123;
+	sec_stats_merge(tsdn, sec, &stats);
+	assert_zu_le(npages * PAGE + 123, stats.bytes, "");
+}
+
+TEST_BEGIN(test_stats_simple) {
+	pai_test_allocator_t ta;
+	pai_test_allocator_init(&ta);
+	sec_t sec;
+
+	/* See the note above -- we can't use the real tsd. */
+	tsdn_t *tsdn = TSDN_NULL;
+
+	enum {
+		NITERS = 100,
+		FLUSH_PAGES = 20,
+	};
+
+	bool deferred_work_generated = false;
+
+	test_sec_init(&sec, &ta.pai, /* nshards */ 1, /* max_alloc */ PAGE,
+	    /* max_bytes */ FLUSH_PAGES * PAGE);
+
+	edata_t *allocs[FLUSH_PAGES];
+	for (size_t i = 0; i < FLUSH_PAGES; i++) {
+		allocs[i] = pai_alloc(tsdn, &sec.pai, PAGE, PAGE,
+		    /* zero */ false, /* guarded */ false, /* frequent_reuse */
+		    false, &deferred_work_generated);
+		expect_stats_pages(tsdn, &sec, 0);
+	}
+
+	/* Increase and decrease, without flushing. */
+	for (size_t i = 0; i < NITERS; i++) {
+		for (size_t j = 0; j < FLUSH_PAGES / 2; j++) {
+			pai_dalloc(tsdn, &sec.pai, allocs[j],
+			    &deferred_work_generated);
+			expect_stats_pages(tsdn, &sec, j + 1);
+		}
+		for (size_t j = 0; j < FLUSH_PAGES / 2; j++) {
+			allocs[j] = pai_alloc(tsdn, &sec.pai, PAGE, PAGE,
+			    /* zero */ false, /* guarded */ false,
+			    /* frequent_reuse */ false,
+			    &deferred_work_generated);
+			expect_stats_pages(tsdn, &sec, FLUSH_PAGES / 2 - j - 1);
+		}
+	}
+}
+TEST_END
+
+TEST_BEGIN(test_stats_auto_flush) {
+	pai_test_allocator_t ta;
+	pai_test_allocator_init(&ta);
+	sec_t sec;
+
+	/* See the note above -- we can't use the real tsd. */
+	tsdn_t *tsdn = TSDN_NULL;
+
+	enum {
+		FLUSH_PAGES = 10,
+	};
+
+	test_sec_init(&sec, &ta.pai, /* nshards */ 1, /* max_alloc */ PAGE,
+	    /* max_bytes */ FLUSH_PAGES * PAGE);
+
+	edata_t *extra_alloc0;
+	edata_t *extra_alloc1;
+	edata_t *allocs[2 * FLUSH_PAGES];
+
+	bool deferred_work_generated = false;
+
+	extra_alloc0 = pai_alloc(tsdn, &sec.pai, PAGE, PAGE, /* zero */ false,
+	    /* guarded */ false, /* frequent_reuse */ false,
+	    &deferred_work_generated);
+	extra_alloc1 = pai_alloc(tsdn, &sec.pai, PAGE, PAGE, /* zero */ false,
+	    /* guarded */ false, /* frequent_reuse */ false,
+	    &deferred_work_generated);
+
+	for (size_t i = 0; i < 2 * FLUSH_PAGES; i++) {
+		allocs[i] = pai_alloc(tsdn, &sec.pai, PAGE, PAGE,
+		    /* zero */ false, /* guarded */ false, /* frequent_reuse */
+		    false, &deferred_work_generated);
+	}
+
+	for (size_t i = 0; i < FLUSH_PAGES; i++) {
+		pai_dalloc(tsdn, &sec.pai, allocs[i], &deferred_work_generated);
+	}
+	pai_dalloc(tsdn, &sec.pai, extra_alloc0, &deferred_work_generated);
+
+	/* Flush the remaining pages; stats should still work. */
+	for (size_t i = 0; i < FLUSH_PAGES; i++) {
+		pai_dalloc(tsdn, &sec.pai, allocs[FLUSH_PAGES + i],
+		    &deferred_work_generated);
+	}
+
+	pai_dalloc(tsdn, &sec.pai, extra_alloc1, &deferred_work_generated);
+
+	expect_stats_pages(tsdn, &sec, ta.alloc_count + ta.alloc_batch_count
+	    - ta.dalloc_count - ta.dalloc_batch_count);
+}
+TEST_END
+
+TEST_BEGIN(test_stats_manual_flush) {
+	pai_test_allocator_t ta;
+	pai_test_allocator_init(&ta);
+	sec_t sec;
+
+	/* See the note above -- we can't use the real tsd. */
+	tsdn_t *tsdn = TSDN_NULL;
+
+	enum {
+		FLUSH_PAGES = 10,
+	};
+
+	test_sec_init(&sec, &ta.pai, /* nshards */ 1, /* max_alloc */ PAGE,
+	    /* max_bytes */ FLUSH_PAGES * PAGE);
+
+	bool deferred_work_generated = false;
+	edata_t *allocs[FLUSH_PAGES];
+	for (size_t i = 0; i < FLUSH_PAGES; i++) {
+		allocs[i] = pai_alloc(tsdn, &sec.pai, PAGE, PAGE,
+		    /* zero */ false, /* guarded */ false, /* frequent_reuse */
+		    false, &deferred_work_generated);
+		expect_stats_pages(tsdn, &sec, 0);
+	}
+
+	/* Dalloc the first half of the allocations. */
+	for (size_t i = 0; i < FLUSH_PAGES / 2; i++) {
+		pai_dalloc(tsdn, &sec.pai, allocs[i], &deferred_work_generated);
+		expect_stats_pages(tsdn, &sec, i + 1);
+	}
+
+	sec_flush(tsdn, &sec);
+	expect_stats_pages(tsdn, &sec, 0);
+
+	/* Flush the remaining pages. */
+	for (size_t i = 0; i < FLUSH_PAGES / 2; i++) {
+		pai_dalloc(tsdn, &sec.pai, allocs[FLUSH_PAGES / 2 + i],
+		    &deferred_work_generated);
+		expect_stats_pages(tsdn, &sec, i + 1);
+	}
+	sec_disable(tsdn, &sec);
+	expect_stats_pages(tsdn, &sec, 0);
+}
+TEST_END
+
+int
+main(void) {
+	return test(
+	    test_reuse,
+	    test_auto_flush,
+	    test_disable,
+	    test_flush,
+	    test_max_alloc_respected,
+	    test_expand_shrink_delegate,
+	    test_nshards_0,
+	    test_stats_simple,
+	    test_stats_auto_flush,
+	    test_stats_manual_flush);
+}
diff --git a/deps/jemalloc/test/unit/seq.c b/deps/jemalloc/test/unit/seq.c
new file mode 100644
index 0000000..06ed683
--- /dev/null
+++ b/deps/jemalloc/test/unit/seq.c
@@ -0,0 +1,95 @@
+#include "test/jemalloc_test.h"
+
+#include "jemalloc/internal/seq.h"
+
+typedef struct data_s data_t;
+struct data_s {
+	int arr[10];
+};
+
+static void
+set_data(data_t *data, int num) {
+	for (int i = 0; i < 10; i++) {
+		data->arr[i] = num;
+	}
+}
+
+static void
+expect_data(data_t *data) {
+	int num = data->arr[0];
+	for (int i = 0; i < 10; i++) {
+		expect_d_eq(num, data->arr[i], "Data consistency error");
+	}
+}
+
+seq_define(data_t, data)
+
+typedef struct thd_data_s thd_data_t;
+struct thd_data_s {
+	seq_data_t data;
+};
+
+static void *
+seq_reader_thd(void *arg) {
+	thd_data_t *thd_data = (thd_data_t *)arg;
+	int iter = 0;
+	data_t local_data;
+	while (iter < 1000 * 1000 - 1) {
+		bool success = seq_try_load_data(&local_data, &thd_data->data);
+		if (success) {
+			expect_data(&local_data);
+			expect_d_le(iter, local_data.arr[0],
+			    "Seq read went back in time.");
+			iter = local_data.arr[0];
+		}
+	}
+	return NULL;
+}
+
+static void *
+seq_writer_thd(void *arg) {
+	thd_data_t *thd_data = (thd_data_t *)arg;
+	data_t local_data;
+	memset(&local_data, 0, sizeof(local_data));
+	for (int i = 0; i < 1000 * 1000; i++) {
+		set_data(&local_data, i);
+		seq_store_data(&thd_data->data, &local_data);
+	}
+	return NULL;
+}
+
+TEST_BEGIN(test_seq_threaded) {
+	thd_data_t thd_data;
+	memset(&thd_data, 0, sizeof(thd_data));
+
+	thd_t reader;
+	thd_t writer;
+
+	thd_create(&reader, seq_reader_thd, &thd_data);
+	thd_create(&writer, seq_writer_thd, &thd_data);
+
+	thd_join(reader, NULL);
+	thd_join(writer, NULL);
+}
+TEST_END
+
+TEST_BEGIN(test_seq_simple) {
+	data_t data;
+	seq_data_t seq;
+	memset(&seq, 0, sizeof(seq));
+	for (int i = 0; i < 1000 * 1000; i++) {
+		set_data(&data, i);
+		seq_store_data(&seq, &data);
+		set_data(&data, 0);
+		bool success = seq_try_load_data(&data, &seq);
+		expect_b_eq(success, true, "Failed non-racing read");
+		expect_data(&data);
+	}
+}
+TEST_END
+
+int main(void) {
+	return test_no_reentrancy(
+	    test_seq_simple,
+	    test_seq_threaded);
+}
diff --git a/deps/jemalloc/test/unit/size_check.c b/deps/jemalloc/test/unit/size_check.c
new file mode 100644
index 0000000..accdc40
--- /dev/null
+++ b/deps/jemalloc/test/unit/size_check.c
@@ -0,0 +1,79 @@
+#include "test/jemalloc_test.h"
+
+#include "jemalloc/internal/safety_check.h"
+
+bool fake_abort_called;
+void fake_abort(const char *message) {
+	(void)message;
+	fake_abort_called = true;
+}
+
+#define SMALL_SIZE1 SC_SMALL_MAXCLASS
+#define SMALL_SIZE2 (SC_SMALL_MAXCLASS / 2)
+
+#define LARGE_SIZE1 SC_LARGE_MINCLASS
+#define LARGE_SIZE2 (LARGE_SIZE1 * 2)
+
+void *
+test_invalid_size_pre(size_t sz) {
+	safety_check_set_abort(&fake_abort);
+
+	fake_abort_called = false;
+	void *ptr = malloc(sz);
+	assert_ptr_not_null(ptr, "Unexpected failure");
+
+	return ptr;
+}
+
+void
+test_invalid_size_post(void) {
+	expect_true(fake_abort_called, "Safety check didn't fire");
+	safety_check_set_abort(NULL);
+}
+
+TEST_BEGIN(test_invalid_size_sdallocx) {
+	test_skip_if(!config_opt_size_checks);
+
+	void *ptr = test_invalid_size_pre(SMALL_SIZE1);
+	sdallocx(ptr, SMALL_SIZE2, 0);
+	test_invalid_size_post();
+
+	ptr = test_invalid_size_pre(LARGE_SIZE1);
+	sdallocx(ptr, LARGE_SIZE2, 0);
+	test_invalid_size_post();
+}
+TEST_END
+
+TEST_BEGIN(test_invalid_size_sdallocx_nonzero_flag) {
+	test_skip_if(!config_opt_size_checks);
+
+	void *ptr = test_invalid_size_pre(SMALL_SIZE1);
+	sdallocx(ptr, SMALL_SIZE2, MALLOCX_TCACHE_NONE);
+	test_invalid_size_post();
+
+	ptr = test_invalid_size_pre(LARGE_SIZE1);
+	sdallocx(ptr, LARGE_SIZE2, MALLOCX_TCACHE_NONE);
+	test_invalid_size_post();
+}
+TEST_END
+
+TEST_BEGIN(test_invalid_size_sdallocx_noflags) {
+	test_skip_if(!config_opt_size_checks);
+
+	void *ptr = test_invalid_size_pre(SMALL_SIZE1);
+	je_sdallocx_noflags(ptr, SMALL_SIZE2);
+	test_invalid_size_post();
+
+	ptr = test_invalid_size_pre(LARGE_SIZE1);
+	je_sdallocx_noflags(ptr, LARGE_SIZE2);
+	test_invalid_size_post();
+}
+TEST_END
+
+int
+main(void) {
+	return test(
+	    test_invalid_size_sdallocx,
+	    test_invalid_size_sdallocx_nonzero_flag,
+	    test_invalid_size_sdallocx_noflags);
+}
diff --git a/deps/jemalloc/test/unit/size_check.sh b/deps/jemalloc/test/unit/size_check.sh
new file mode 100644
index 0000000..352d110
--- /dev/null
+++ b/deps/jemalloc/test/unit/size_check.sh
@@ -0,0 +1,5 @@
+#!/bin/sh
+
+if [ "x${enable_prof}" = "x1" ] ; then
+  export MALLOC_CONF="prof:false"
+fi
diff --git a/deps/jemalloc/test/unit/size_classes.c b/deps/jemalloc/test/unit/size_classes.c
new file mode 100644
index 0000000..c70eb59
--- /dev/null
+++ b/deps/jemalloc/test/unit/size_classes.c
@@ -0,0 +1,188 @@
+#include "test/jemalloc_test.h"
+
+static size_t
+get_max_size_class(void) {
+	unsigned nlextents;
+	size_t mib[4];
+	size_t sz, miblen, max_size_class;
+
+	sz = sizeof(unsigned);
+	expect_d_eq(mallctl("arenas.nlextents", (void *)&nlextents, &sz, NULL,
+	    0), 0, "Unexpected mallctl() error");
+
+	miblen = sizeof(mib) / sizeof(size_t);
+	expect_d_eq(mallctlnametomib("arenas.lextent.0.size", mib, &miblen), 0,
+	    "Unexpected mallctlnametomib() error");
+	mib[2] = nlextents - 1;
+
+	sz = sizeof(size_t);
+	expect_d_eq(mallctlbymib(mib, miblen, (void *)&max_size_class, &sz,
+	    NULL, 0), 0, "Unexpected mallctlbymib() error");
+
+	return max_size_class;
+}
+
+TEST_BEGIN(test_size_classes) {
+	size_t size_class, max_size_class;
+	szind_t index, max_index;
+
+	max_size_class = get_max_size_class();
+	max_index = sz_size2index(max_size_class);
+
+	for (index = 0, size_class = sz_index2size(index); index < max_index ||
+	    size_class < max_size_class; index++, size_class =
+	    sz_index2size(index)) {
+		expect_true(index < max_index,
+		    "Loop conditionals should be equivalent; index=%u, "
+		    "size_class=%zu (%#zx)", index, size_class, size_class);
+		expect_true(size_class < max_size_class,
+		    "Loop conditionals should be equivalent; index=%u, "
+		    "size_class=%zu (%#zx)", index, size_class, size_class);
+
+		expect_u_eq(index, sz_size2index(size_class),
+		    "sz_size2index() does not reverse sz_index2size(): index=%u"
+		    " --> size_class=%zu --> index=%u --> size_class=%zu",
+		    index, size_class, sz_size2index(size_class),
+		    sz_index2size(sz_size2index(size_class)));
+		expect_zu_eq(size_class,
+		    sz_index2size(sz_size2index(size_class)),
+		    "sz_index2size() does not reverse sz_size2index(): index=%u"
+		    " --> size_class=%zu --> index=%u --> size_class=%zu",
+		    index, size_class, sz_size2index(size_class),
+		    sz_index2size(sz_size2index(size_class)));
+
+		expect_u_eq(index+1, sz_size2index(size_class+1),
+		    "Next size_class does not round up properly");
+
+		expect_zu_eq(size_class, (index > 0) ?
+		    sz_s2u(sz_index2size(index-1)+1) : sz_s2u(1),
+		    "sz_s2u() does not round up to size class");
+		expect_zu_eq(size_class, sz_s2u(size_class-1),
+		    "sz_s2u() does not round up to size class");
+		expect_zu_eq(size_class, sz_s2u(size_class),
+		    "sz_s2u() does not compute same size class");
+		expect_zu_eq(sz_s2u(size_class+1), sz_index2size(index+1),
+		    "sz_s2u() does not round up to next size class");
+	}
+
+	expect_u_eq(index, sz_size2index(sz_index2size(index)),
+	    "sz_size2index() does not reverse sz_index2size()");
+	expect_zu_eq(max_size_class, sz_index2size(
+	    sz_size2index(max_size_class)),
+	    "sz_index2size() does not reverse sz_size2index()");
+
+	expect_zu_eq(size_class, sz_s2u(sz_index2size(index-1)+1),
+	    "sz_s2u() does not round up to size class");
+	expect_zu_eq(size_class, sz_s2u(size_class-1),
+	    "sz_s2u() does not round up to size class");
+	expect_zu_eq(size_class, sz_s2u(size_class),
+	    "sz_s2u() does not compute same size class");
+}
+TEST_END
+
+TEST_BEGIN(test_psize_classes) {
+	size_t size_class, max_psz;
+	pszind_t pind, max_pind;
+
+	max_psz = get_max_size_class() + PAGE;
+	max_pind = sz_psz2ind(max_psz);
+
+	for (pind = 0, size_class = sz_pind2sz(pind);
+	    pind < max_pind || size_class < max_psz;
+	    pind++, size_class = sz_pind2sz(pind)) {
+		expect_true(pind < max_pind,
+		    "Loop conditionals should be equivalent; pind=%u, "
+		    "size_class=%zu (%#zx)", pind, size_class, size_class);
+		expect_true(size_class < max_psz,
+		    "Loop conditionals should be equivalent; pind=%u, "
+		    "size_class=%zu (%#zx)", pind, size_class, size_class);
+
+		expect_u_eq(pind, sz_psz2ind(size_class),
+		    "sz_psz2ind() does not reverse sz_pind2sz(): pind=%u -->"
+		    " size_class=%zu --> pind=%u --> size_class=%zu", pind,
+		    size_class, sz_psz2ind(size_class),
+		    sz_pind2sz(sz_psz2ind(size_class)));
+		expect_zu_eq(size_class, sz_pind2sz(sz_psz2ind(size_class)),
+		    "sz_pind2sz() does not reverse sz_psz2ind(): pind=%u -->"
+		    " size_class=%zu --> pind=%u --> size_class=%zu", pind,
+		    size_class, sz_psz2ind(size_class),
+		    sz_pind2sz(sz_psz2ind(size_class)));
+
+		if (size_class == SC_LARGE_MAXCLASS) {
+			expect_u_eq(SC_NPSIZES, sz_psz2ind(size_class + 1),
+			    "Next size_class does not round up properly");
+		} else {
+			expect_u_eq(pind + 1, sz_psz2ind(size_class + 1),
+			    "Next size_class does not round up properly");
+		}
+
+		expect_zu_eq(size_class, (pind > 0) ?
+		    sz_psz2u(sz_pind2sz(pind-1)+1) : sz_psz2u(1),
+		    "sz_psz2u() does not round up to size class");
+		expect_zu_eq(size_class, sz_psz2u(size_class-1),
+		    "sz_psz2u() does not round up to size class");
+		expect_zu_eq(size_class, sz_psz2u(size_class),
+		    "sz_psz2u() does not compute same size class");
+		expect_zu_eq(sz_psz2u(size_class+1), sz_pind2sz(pind+1),
+		    "sz_psz2u() does not round up to next size class");
+	}
+
+	expect_u_eq(pind, sz_psz2ind(sz_pind2sz(pind)),
+	    "sz_psz2ind() does not reverse sz_pind2sz()");
+	expect_zu_eq(max_psz, sz_pind2sz(sz_psz2ind(max_psz)),
+	    "sz_pind2sz() does not reverse sz_psz2ind()");
+
+	expect_zu_eq(size_class, sz_psz2u(sz_pind2sz(pind-1)+1),
+	    "sz_psz2u() does not round up to size class");
+	expect_zu_eq(size_class, sz_psz2u(size_class-1),
+	    "sz_psz2u() does not round up to size class");
+	expect_zu_eq(size_class, sz_psz2u(size_class),
+	    "sz_psz2u() does not compute same size class");
+}
+TEST_END
+
+TEST_BEGIN(test_overflow) {
+	size_t max_size_class, max_psz;
+
+	max_size_class = get_max_size_class();
+	max_psz = max_size_class + PAGE;
+
+	expect_u_eq(sz_size2index(max_size_class+1), SC_NSIZES,
+	    "sz_size2index() should return NSIZES on overflow");
+	expect_u_eq(sz_size2index(ZU(PTRDIFF_MAX)+1), SC_NSIZES,
+	    "sz_size2index() should return NSIZES on overflow");
+	expect_u_eq(sz_size2index(SIZE_T_MAX), SC_NSIZES,
+	    "sz_size2index() should return NSIZES on overflow");
+
+	expect_zu_eq(sz_s2u(max_size_class+1), 0,
+	    "sz_s2u() should return 0 for unsupported size");
+	expect_zu_eq(sz_s2u(ZU(PTRDIFF_MAX)+1), 0,
+	    "sz_s2u() should return 0 for unsupported size");
+	expect_zu_eq(sz_s2u(SIZE_T_MAX), 0,
+	    "sz_s2u() should return 0 on overflow");
+
+	expect_u_eq(sz_psz2ind(max_size_class+1), SC_NPSIZES,
+	    "sz_psz2ind() should return NPSIZES on overflow");
+	expect_u_eq(sz_psz2ind(ZU(PTRDIFF_MAX)+1), SC_NPSIZES,
+	    "sz_psz2ind() should return NPSIZES on overflow");
+	expect_u_eq(sz_psz2ind(SIZE_T_MAX), SC_NPSIZES,
+	    "sz_psz2ind() should return NPSIZES on overflow");
+
+	expect_zu_eq(sz_psz2u(max_size_class+1), max_psz,
+	    "sz_psz2u() should return (LARGE_MAXCLASS + PAGE) for unsupported"
+	    " size");
+	expect_zu_eq(sz_psz2u(ZU(PTRDIFF_MAX)+1), max_psz,
+	    "sz_psz2u() should return (LARGE_MAXCLASS + PAGE) for unsupported "
+	    "size");
+	expect_zu_eq(sz_psz2u(SIZE_T_MAX), max_psz,
+	    "sz_psz2u() should return (LARGE_MAXCLASS + PAGE) on overflow");
+}
+TEST_END
+
+int
+main(void) {
+	return test(
+	    test_size_classes,
+	    test_psize_classes,
+	    test_overflow);
+}
diff --git a/deps/jemalloc/test/unit/slab.c b/deps/jemalloc/test/unit/slab.c
new file mode 100644
index 0000000..70fc5c7
--- /dev/null
+++ b/deps/jemalloc/test/unit/slab.c
@@ -0,0 +1,39 @@
+#include "test/jemalloc_test.h"
+
+#define INVALID_ARENA_IND ((1U << MALLOCX_ARENA_BITS) - 1)
+
+TEST_BEGIN(test_arena_slab_regind) {
+	szind_t binind;
+
+	for (binind = 0; binind < SC_NBINS; binind++) {
+		size_t regind;
+		edata_t slab;
+		const bin_info_t *bin_info = &bin_infos[binind];
+		edata_init(&slab, INVALID_ARENA_IND,
+		    mallocx(bin_info->slab_size, MALLOCX_LG_ALIGN(LG_PAGE)),
+		    bin_info->slab_size, true,
+		    binind, 0, extent_state_active, false, true, EXTENT_PAI_PAC,
+		    EXTENT_NOT_HEAD);
+		expect_ptr_not_null(edata_addr_get(&slab),
+		    "Unexpected malloc() failure");
+		arena_dalloc_bin_locked_info_t dalloc_info;
+		arena_dalloc_bin_locked_begin(&dalloc_info, binind);
+		for (regind = 0; regind < bin_info->nregs; regind++) {
+			void *reg = (void *)((uintptr_t)edata_addr_get(&slab) +
+			    (bin_info->reg_size * regind));
+			expect_zu_eq(arena_slab_regind(&dalloc_info, binind,
+			    &slab, reg),
+			    regind,
+			    "Incorrect region index computed for size %zu",
+			    bin_info->reg_size);
+		}
+		free(edata_addr_get(&slab));
+	}
+}
+TEST_END
+
+int
+main(void) {
+	return test(
+	    test_arena_slab_regind);
+}
diff --git a/deps/jemalloc/test/unit/smoothstep.c b/deps/jemalloc/test/unit/smoothstep.c
new file mode 100644
index 0000000..588c9f4
--- /dev/null
+++ b/deps/jemalloc/test/unit/smoothstep.c
@@ -0,0 +1,102 @@
+#include "test/jemalloc_test.h"
+
+static const uint64_t smoothstep_tab[] = {
+#define STEP(step, h, x, y)			\
+	h,
+	SMOOTHSTEP
+#undef STEP
+};
+
+TEST_BEGIN(test_smoothstep_integral) {
+	uint64_t sum, min, max;
+	unsigned i;
+
+	/*
+	 * The integral of smoothstep in the [0..1] range equals 1/2.  Verify
+	 * that the fixed point representation's integral is no more than
+	 * rounding error distant from 1/2.  Regarding rounding, each table
+	 * element is rounded down to the nearest fixed point value, so the
+	 * integral may be off by as much as SMOOTHSTEP_NSTEPS ulps.
+	 */
+	sum = 0;
+	for (i = 0; i < SMOOTHSTEP_NSTEPS; i++) {
+		sum += smoothstep_tab[i];
+	}
+
+	max = (KQU(1) << (SMOOTHSTEP_BFP-1)) * (SMOOTHSTEP_NSTEPS+1);
+	min = max - SMOOTHSTEP_NSTEPS;
+
+	expect_u64_ge(sum, min,
+	    "Integral too small, even accounting for truncation");
+	expect_u64_le(sum, max, "Integral exceeds 1/2");
+	if (false) {
+		malloc_printf("%"FMTu64" ulps under 1/2 (limit %d)\n",
+		    max - sum, SMOOTHSTEP_NSTEPS);
+	}
+}
+TEST_END
+
+TEST_BEGIN(test_smoothstep_monotonic) {
+	uint64_t prev_h;
+	unsigned i;
+
+	/*
+	 * The smoothstep function is monotonic in [0..1], i.e. its slope is
+	 * non-negative.  In practice we want to parametrize table generation
+	 * such that piecewise slope is greater than zero, but do not require
+	 * that here.
+	 */
+	prev_h = 0;
+	for (i = 0; i < SMOOTHSTEP_NSTEPS; i++) {
+		uint64_t h = smoothstep_tab[i];
+		expect_u64_ge(h, prev_h, "Piecewise non-monotonic, i=%u", i);
+		prev_h = h;
+	}
+	expect_u64_eq(smoothstep_tab[SMOOTHSTEP_NSTEPS-1],
+	    (KQU(1) << SMOOTHSTEP_BFP), "Last step must equal 1");
+}
+TEST_END
+
+TEST_BEGIN(test_smoothstep_slope) {
+	uint64_t prev_h, prev_delta;
+	unsigned i;
+
+	/*
+	 * The smoothstep slope strictly increases until x=0.5, and then
+	 * strictly decreases until x=1.0.  Verify the slightly weaker
+	 * requirement of monotonicity, so that inadequate table precision does
+	 * not cause false test failures.
+	 */
+	prev_h = 0;
+	prev_delta = 0;
+	for (i = 0; i < SMOOTHSTEP_NSTEPS / 2 + SMOOTHSTEP_NSTEPS % 2; i++) {
+		uint64_t h = smoothstep_tab[i];
+		uint64_t delta = h - prev_h;
+		expect_u64_ge(delta, prev_delta,
+		    "Slope must monotonically increase in 0.0 <= x <= 0.5, "
+		    "i=%u", i);
+		prev_h = h;
+		prev_delta = delta;
+	}
+
+	prev_h = KQU(1) << SMOOTHSTEP_BFP;
+	prev_delta = 0;
+	for (i = SMOOTHSTEP_NSTEPS-1; i >= SMOOTHSTEP_NSTEPS / 2; i--) {
+		uint64_t h = smoothstep_tab[i];
+		uint64_t delta = prev_h - h;
+		expect_u64_ge(delta, prev_delta,
+		    "Slope must monotonically decrease in 0.5 <= x <= 1.0, "
+		    "i=%u", i);
+		prev_h = h;
+		prev_delta = delta;
+	}
+}
+TEST_END
+
+int
+main(void) {
+	return test(
+	    test_smoothstep_integral,
+	    test_smoothstep_monotonic,
+	    test_smoothstep_slope);
+}
diff --git a/deps/jemalloc/test/unit/spin.c b/deps/jemalloc/test/unit/spin.c
new file mode 100644
index 0000000..b965f74
--- /dev/null
+++ b/deps/jemalloc/test/unit/spin.c
@@ -0,0 +1,18 @@
+#include "test/jemalloc_test.h"
+
+#include "jemalloc/internal/spin.h"
+
+TEST_BEGIN(test_spin) {
+	spin_t spinner = SPIN_INITIALIZER;
+
+	for (unsigned i = 0; i < 100; i++) {
+		spin_adaptive(&spinner);
+	}
+}
+TEST_END
+
+int
+main(void) {
+	return test(
+	    test_spin);
+}
diff --git a/deps/jemalloc/test/unit/stats.c b/deps/jemalloc/test/unit/stats.c
new file mode 100644
index 0000000..bbdbd18
--- /dev/null
+++ b/deps/jemalloc/test/unit/stats.c
@@ -0,0 +1,431 @@
+#include "test/jemalloc_test.h"
+
+#define STRINGIFY_HELPER(x) #x
+#define STRINGIFY(x) STRINGIFY_HELPER(x)
+
+TEST_BEGIN(test_stats_summary) {
+	size_t sz, allocated, active, resident, mapped;
+	int expected = config_stats ? 0 : ENOENT;
+
+	sz = sizeof(size_t);
+	expect_d_eq(mallctl("stats.allocated", (void *)&allocated, &sz, NULL,
+	    0), expected, "Unexpected mallctl() result");
+	expect_d_eq(mallctl("stats.active", (void *)&active, &sz, NULL, 0),
+	    expected, "Unexpected mallctl() result");
+	expect_d_eq(mallctl("stats.resident", (void *)&resident, &sz, NULL, 0),
+	    expected, "Unexpected mallctl() result");
+	expect_d_eq(mallctl("stats.mapped", (void *)&mapped, &sz, NULL, 0),
+	    expected, "Unexpected mallctl() result");
+
+	if (config_stats) {
+		expect_zu_le(allocated, active,
+		    "allocated should be no larger than active");
+		expect_zu_lt(active, resident,
+		    "active should be less than resident");
+		expect_zu_lt(active, mapped,
+		    "active should be less than mapped");
+	}
+}
+TEST_END
+
+TEST_BEGIN(test_stats_large) {
+	void *p;
+	uint64_t epoch;
+	size_t allocated;
+	uint64_t nmalloc, ndalloc, nrequests;
+	size_t sz;
+	int expected = config_stats ? 0 : ENOENT;
+
+	p = mallocx(SC_SMALL_MAXCLASS + 1, MALLOCX_ARENA(0));
+	expect_ptr_not_null(p, "Unexpected mallocx() failure");
+
+	expect_d_eq(mallctl("epoch", NULL, NULL, (void *)&epoch, sizeof(epoch)),
+	    0, "Unexpected mallctl() failure");
+
+	sz = sizeof(size_t);
+	expect_d_eq(mallctl("stats.arenas.0.large.allocated",
+	    (void *)&allocated, &sz, NULL, 0), expected,
+	    "Unexpected mallctl() result");
+	sz = sizeof(uint64_t);
+	expect_d_eq(mallctl("stats.arenas.0.large.nmalloc", (void *)&nmalloc,
+	    &sz, NULL, 0), expected, "Unexpected mallctl() result");
+	expect_d_eq(mallctl("stats.arenas.0.large.ndalloc", (void *)&ndalloc,
+	    &sz, NULL, 0), expected, "Unexpected mallctl() result");
+	expect_d_eq(mallctl("stats.arenas.0.large.nrequests",
+	    (void *)&nrequests, &sz, NULL, 0), expected,
+	    "Unexpected mallctl() result");
+
+	if (config_stats) {
+		expect_zu_gt(allocated, 0,
+		    "allocated should be greater than zero");
+		expect_u64_ge(nmalloc, ndalloc,
+		    "nmalloc should be at least as large as ndalloc");
+		expect_u64_le(nmalloc, nrequests,
+		    "nmalloc should no larger than nrequests");
+	}
+
+	dallocx(p, 0);
+}
+TEST_END
+
+TEST_BEGIN(test_stats_arenas_summary) {
+	void *little, *large;
+	uint64_t epoch;
+	size_t sz;
+	int expected = config_stats ? 0 : ENOENT;
+	size_t mapped;
+	uint64_t dirty_npurge, dirty_nmadvise, dirty_purged;
+	uint64_t muzzy_npurge, muzzy_nmadvise, muzzy_purged;
+
+	little = mallocx(SC_SMALL_MAXCLASS, MALLOCX_ARENA(0));
+	expect_ptr_not_null(little, "Unexpected mallocx() failure");
+	large = mallocx((1U << SC_LG_LARGE_MINCLASS),
+	    MALLOCX_ARENA(0));
+	expect_ptr_not_null(large, "Unexpected mallocx() failure");
+
+	dallocx(little, 0);
+	dallocx(large, 0);
+
+	expect_d_eq(mallctl("thread.tcache.flush", NULL, NULL, NULL, 0),
+	    opt_tcache ? 0 : EFAULT, "Unexpected mallctl() result");
+	expect_d_eq(mallctl("arena.0.purge", NULL, NULL, NULL, 0), 0,
+	    "Unexpected mallctl() failure");
+
+	expect_d_eq(mallctl("epoch", NULL, NULL, (void *)&epoch, sizeof(epoch)),
+	    0, "Unexpected mallctl() failure");
+
+	sz = sizeof(size_t);
+	expect_d_eq(mallctl("stats.arenas.0.mapped", (void *)&mapped, &sz, NULL,
+	    0), expected, "Unexepected mallctl() result");
+
+	sz = sizeof(uint64_t);
+	expect_d_eq(mallctl("stats.arenas.0.dirty_npurge",
+	    (void *)&dirty_npurge, &sz, NULL, 0), expected,
+	    "Unexepected mallctl() result");
+	expect_d_eq(mallctl("stats.arenas.0.dirty_nmadvise",
+	    (void *)&dirty_nmadvise, &sz, NULL, 0), expected,
+	    "Unexepected mallctl() result");
+	expect_d_eq(mallctl("stats.arenas.0.dirty_purged",
+	    (void *)&dirty_purged, &sz, NULL, 0), expected,
+	    "Unexepected mallctl() result");
+	expect_d_eq(mallctl("stats.arenas.0.muzzy_npurge",
+	    (void *)&muzzy_npurge, &sz, NULL, 0), expected,
+	    "Unexepected mallctl() result");
+	expect_d_eq(mallctl("stats.arenas.0.muzzy_nmadvise",
+	    (void *)&muzzy_nmadvise, &sz, NULL, 0), expected,
+	    "Unexepected mallctl() result");
+	expect_d_eq(mallctl("stats.arenas.0.muzzy_purged",
+	    (void *)&muzzy_purged, &sz, NULL, 0), expected,
+	    "Unexepected mallctl() result");
+
+	if (config_stats) {
+		if (!is_background_thread_enabled() && !opt_hpa) {
+			expect_u64_gt(dirty_npurge + muzzy_npurge, 0,
+			    "At least one purge should have occurred");
+		}
+		expect_u64_le(dirty_nmadvise, dirty_purged,
+		    "dirty_nmadvise should be no greater than dirty_purged");
+		expect_u64_le(muzzy_nmadvise, muzzy_purged,
+		    "muzzy_nmadvise should be no greater than muzzy_purged");
+	}
+}
+TEST_END
+
+void *
+thd_start(void *arg) {
+	return NULL;
+}
+
+static void
+no_lazy_lock(void) {
+	thd_t thd;
+
+	thd_create(&thd, thd_start, NULL);
+	thd_join(thd, NULL);
+}
+
+TEST_BEGIN(test_stats_arenas_small) {
+	void *p;
+	size_t sz, allocated;
+	uint64_t epoch, nmalloc, ndalloc, nrequests;
+	int expected = config_stats ? 0 : ENOENT;
+
+	no_lazy_lock(); /* Lazy locking would dodge tcache testing. */
+
+	p = mallocx(SC_SMALL_MAXCLASS, MALLOCX_ARENA(0));
+	expect_ptr_not_null(p, "Unexpected mallocx() failure");
+
+	expect_d_eq(mallctl("thread.tcache.flush", NULL, NULL, NULL, 0),
+	    opt_tcache ? 0 : EFAULT, "Unexpected mallctl() result");
+
+	expect_d_eq(mallctl("epoch", NULL, NULL, (void *)&epoch, sizeof(epoch)),
+	    0, "Unexpected mallctl() failure");
+
+	sz = sizeof(size_t);
+	expect_d_eq(mallctl("stats.arenas.0.small.allocated",
+	    (void *)&allocated, &sz, NULL, 0), expected,
+	    "Unexpected mallctl() result");
+	sz = sizeof(uint64_t);
+	expect_d_eq(mallctl("stats.arenas.0.small.nmalloc", (void *)&nmalloc,
+	    &sz, NULL, 0), expected, "Unexpected mallctl() result");
+	expect_d_eq(mallctl("stats.arenas.0.small.ndalloc", (void *)&ndalloc,
+	    &sz, NULL, 0), expected, "Unexpected mallctl() result");
+	expect_d_eq(mallctl("stats.arenas.0.small.nrequests",
+	    (void *)&nrequests, &sz, NULL, 0), expected,
+	    "Unexpected mallctl() result");
+
+	if (config_stats) {
+		expect_zu_gt(allocated, 0,
+		    "allocated should be greater than zero");
+		expect_u64_gt(nmalloc, 0,
+		    "nmalloc should be no greater than zero");
+		expect_u64_ge(nmalloc, ndalloc,
+		    "nmalloc should be at least as large as ndalloc");
+		expect_u64_gt(nrequests, 0,
+		    "nrequests should be greater than zero");
+	}
+
+	dallocx(p, 0);
+}
+TEST_END
+
+TEST_BEGIN(test_stats_arenas_large) {
+	void *p;
+	size_t sz, allocated;
+	uint64_t epoch, nmalloc, ndalloc;
+	int expected = config_stats ? 0 : ENOENT;
+
+	p = mallocx((1U << SC_LG_LARGE_MINCLASS), MALLOCX_ARENA(0));
+	expect_ptr_not_null(p, "Unexpected mallocx() failure");
+
+	expect_d_eq(mallctl("epoch", NULL, NULL, (void *)&epoch, sizeof(epoch)),
+	    0, "Unexpected mallctl() failure");
+
+	sz = sizeof(size_t);
+	expect_d_eq(mallctl("stats.arenas.0.large.allocated",
+	    (void *)&allocated, &sz, NULL, 0), expected,
+	    "Unexpected mallctl() result");
+	sz = sizeof(uint64_t);
+	expect_d_eq(mallctl("stats.arenas.0.large.nmalloc", (void *)&nmalloc,
+	    &sz, NULL, 0), expected, "Unexpected mallctl() result");
+	expect_d_eq(mallctl("stats.arenas.0.large.ndalloc", (void *)&ndalloc,
+	    &sz, NULL, 0), expected, "Unexpected mallctl() result");
+
+	if (config_stats) {
+		expect_zu_gt(allocated, 0,
+		    "allocated should be greater than zero");
+		expect_u64_gt(nmalloc, 0,
+		    "nmalloc should be greater than zero");
+		expect_u64_ge(nmalloc, ndalloc,
+		    "nmalloc should be at least as large as ndalloc");
+	}
+
+	dallocx(p, 0);
+}
+TEST_END
+
+static void
+gen_mallctl_str(char *cmd, char *name, unsigned arena_ind) {
+	sprintf(cmd, "stats.arenas.%u.bins.0.%s", arena_ind, name);
+}
+
+TEST_BEGIN(test_stats_arenas_bins) {
+	void *p;
+	size_t sz, curslabs, curregs, nonfull_slabs;
+	uint64_t epoch, nmalloc, ndalloc, nrequests, nfills, nflushes;
+	uint64_t nslabs, nreslabs;
+	int expected = config_stats ? 0 : ENOENT;
+
+	/* Make sure allocation below isn't satisfied by tcache. */
+	expect_d_eq(mallctl("thread.tcache.flush", NULL, NULL, NULL, 0),
+	    opt_tcache ? 0 : EFAULT, "Unexpected mallctl() result");
+
+	unsigned arena_ind, old_arena_ind;
+	sz = sizeof(unsigned);
+	expect_d_eq(mallctl("arenas.create", (void *)&arena_ind, &sz, NULL, 0),
+	    0, "Arena creation failure");
+	sz = sizeof(arena_ind);
+	expect_d_eq(mallctl("thread.arena", (void *)&old_arena_ind, &sz,
+	    (void *)&arena_ind, sizeof(arena_ind)), 0,
+	    "Unexpected mallctl() failure");
+
+	p = malloc(bin_infos[0].reg_size);
+	expect_ptr_not_null(p, "Unexpected malloc() failure");
+
+	expect_d_eq(mallctl("thread.tcache.flush", NULL, NULL, NULL, 0),
+	    opt_tcache ? 0 : EFAULT, "Unexpected mallctl() result");
+
+	expect_d_eq(mallctl("epoch", NULL, NULL, (void *)&epoch, sizeof(epoch)),
+	    0, "Unexpected mallctl() failure");
+
+	char cmd[128];
+	sz = sizeof(uint64_t);
+	gen_mallctl_str(cmd, "nmalloc", arena_ind);
+	expect_d_eq(mallctl(cmd, (void *)&nmalloc, &sz, NULL, 0), expected,
+	    "Unexpected mallctl() result");
+	gen_mallctl_str(cmd, "ndalloc", arena_ind);
+	expect_d_eq(mallctl(cmd, (void *)&ndalloc, &sz, NULL, 0), expected,
+	    "Unexpected mallctl() result");
+	gen_mallctl_str(cmd, "nrequests", arena_ind);
+	expect_d_eq(mallctl(cmd, (void *)&nrequests, &sz, NULL, 0), expected,
+	    "Unexpected mallctl() result");
+	sz = sizeof(size_t);
+	gen_mallctl_str(cmd, "curregs", arena_ind);
+	expect_d_eq(mallctl(cmd, (void *)&curregs, &sz, NULL, 0), expected,
+	    "Unexpected mallctl() result");
+
+	sz = sizeof(uint64_t);
+	gen_mallctl_str(cmd, "nfills", arena_ind);
+	expect_d_eq(mallctl(cmd, (void *)&nfills, &sz, NULL, 0), expected,
+	    "Unexpected mallctl() result");
+	gen_mallctl_str(cmd, "nflushes", arena_ind);
+	expect_d_eq(mallctl(cmd, (void *)&nflushes, &sz, NULL, 0), expected,
+	    "Unexpected mallctl() result");
+
+	gen_mallctl_str(cmd, "nslabs", arena_ind);
+	expect_d_eq(mallctl(cmd, (void *)&nslabs, &sz, NULL, 0), expected,
+	    "Unexpected mallctl() result");
+	gen_mallctl_str(cmd, "nreslabs", arena_ind);
+	expect_d_eq(mallctl(cmd, (void *)&nreslabs, &sz, NULL, 0), expected,
+	    "Unexpected mallctl() result");
+	sz = sizeof(size_t);
+	gen_mallctl_str(cmd, "curslabs", arena_ind);
+	expect_d_eq(mallctl(cmd, (void *)&curslabs, &sz, NULL, 0), expected,
+	    "Unexpected mallctl() result");
+	gen_mallctl_str(cmd, "nonfull_slabs", arena_ind);
+	expect_d_eq(mallctl(cmd, (void *)&nonfull_slabs, &sz, NULL, 0),
+	    expected, "Unexpected mallctl() result");
+
+	if (config_stats) {
+		expect_u64_gt(nmalloc, 0,
+		    "nmalloc should be greater than zero");
+		expect_u64_ge(nmalloc, ndalloc,
+		    "nmalloc should be at least as large as ndalloc");
+		expect_u64_gt(nrequests, 0,
+		    "nrequests should be greater than zero");
+		expect_zu_gt(curregs, 0,
+		    "allocated should be greater than zero");
+		if (opt_tcache) {
+			expect_u64_gt(nfills, 0,
+			    "At least one fill should have occurred");
+			expect_u64_gt(nflushes, 0,
+			    "At least one flush should have occurred");
+		}
+		expect_u64_gt(nslabs, 0,
+		    "At least one slab should have been allocated");
+		expect_zu_gt(curslabs, 0,
+		    "At least one slab should be currently allocated");
+		expect_zu_eq(nonfull_slabs, 0,
+		    "slabs_nonfull should be empty");
+	}
+
+	dallocx(p, 0);
+}
+TEST_END
+
+TEST_BEGIN(test_stats_arenas_lextents) {
+	void *p;
+	uint64_t epoch, nmalloc, ndalloc;
+	size_t curlextents, sz, hsize;
+	int expected = config_stats ? 0 : ENOENT;
+
+	sz = sizeof(size_t);
+	expect_d_eq(mallctl("arenas.lextent.0.size", (void *)&hsize, &sz, NULL,
+	    0), 0, "Unexpected mallctl() failure");
+
+	p = mallocx(hsize, MALLOCX_ARENA(0));
+	expect_ptr_not_null(p, "Unexpected mallocx() failure");
+
+	expect_d_eq(mallctl("epoch", NULL, NULL, (void *)&epoch, sizeof(epoch)),
+	    0, "Unexpected mallctl() failure");
+
+	sz = sizeof(uint64_t);
+	expect_d_eq(mallctl("stats.arenas.0.lextents.0.nmalloc",
+	    (void *)&nmalloc, &sz, NULL, 0), expected,
+	    "Unexpected mallctl() result");
+	expect_d_eq(mallctl("stats.arenas.0.lextents.0.ndalloc",
+	    (void *)&ndalloc, &sz, NULL, 0), expected,
+	    "Unexpected mallctl() result");
+	sz = sizeof(size_t);
+	expect_d_eq(mallctl("stats.arenas.0.lextents.0.curlextents",
+	    (void *)&curlextents, &sz, NULL, 0), expected,
+	    "Unexpected mallctl() result");
+
+	if (config_stats) {
+		expect_u64_gt(nmalloc, 0,
+		    "nmalloc should be greater than zero");
+		expect_u64_ge(nmalloc, ndalloc,
+		    "nmalloc should be at least as large as ndalloc");
+		expect_u64_gt(curlextents, 0,
+		    "At least one extent should be currently allocated");
+	}
+
+	dallocx(p, 0);
+}
+TEST_END
+
+static void
+test_tcache_bytes_for_usize(size_t usize) {
+	uint64_t epoch;
+	size_t tcache_bytes, tcache_stashed_bytes;
+	size_t sz = sizeof(tcache_bytes);
+
+	void *ptr = mallocx(usize, 0);
+
+	expect_d_eq(mallctl("epoch", NULL, NULL, (void *)&epoch, sizeof(epoch)),
+	    0, "Unexpected mallctl() failure");
+	assert_d_eq(mallctl(
+	    "stats.arenas." STRINGIFY(MALLCTL_ARENAS_ALL) ".tcache_bytes",
+	    &tcache_bytes, &sz, NULL, 0), 0, "Unexpected mallctl failure");
+	assert_d_eq(mallctl(
+	    "stats.arenas." STRINGIFY(MALLCTL_ARENAS_ALL)
+	    ".tcache_stashed_bytes", &tcache_stashed_bytes, &sz, NULL, 0), 0,
+	    "Unexpected mallctl failure");
+	size_t tcache_bytes_before = tcache_bytes + tcache_stashed_bytes;
+	dallocx(ptr, 0);
+
+	expect_d_eq(mallctl("epoch", NULL, NULL, (void *)&epoch, sizeof(epoch)),
+	    0, "Unexpected mallctl() failure");
+	assert_d_eq(mallctl(
+	    "stats.arenas." STRINGIFY(MALLCTL_ARENAS_ALL) ".tcache_bytes",
+	    &tcache_bytes, &sz, NULL, 0), 0, "Unexpected mallctl failure");
+	assert_d_eq(mallctl(
+	    "stats.arenas." STRINGIFY(MALLCTL_ARENAS_ALL)
+	    ".tcache_stashed_bytes", &tcache_stashed_bytes, &sz, NULL, 0), 0,
+	    "Unexpected mallctl failure");
+	size_t tcache_bytes_after = tcache_bytes + tcache_stashed_bytes;
+	assert_zu_eq(tcache_bytes_after - tcache_bytes_before,
+	    usize, "Incorrectly attributed a free");
+}
+
+TEST_BEGIN(test_stats_tcache_bytes_small) {
+	test_skip_if(!config_stats);
+	test_skip_if(!opt_tcache);
+	test_skip_if(opt_tcache_max < SC_SMALL_MAXCLASS);
+
+	test_tcache_bytes_for_usize(SC_SMALL_MAXCLASS);
+}
+TEST_END
+
+TEST_BEGIN(test_stats_tcache_bytes_large) {
+	test_skip_if(!config_stats);
+	test_skip_if(!opt_tcache);
+	test_skip_if(opt_tcache_max < SC_LARGE_MINCLASS);
+
+	test_tcache_bytes_for_usize(SC_LARGE_MINCLASS);
+}
+TEST_END
+
+int
+main(void) {
+	return test_no_reentrancy(
+	    test_stats_summary,
+	    test_stats_large,
+	    test_stats_arenas_summary,
+	    test_stats_arenas_small,
+	    test_stats_arenas_large,
+	    test_stats_arenas_bins,
+	    test_stats_arenas_lextents,
+	    test_stats_tcache_bytes_small,
+	    test_stats_tcache_bytes_large);
+}
diff --git a/deps/jemalloc/test/unit/stats_print.c b/deps/jemalloc/test/unit/stats_print.c
new file mode 100644
index 0000000..3b31775
--- /dev/null
+++ b/deps/jemalloc/test/unit/stats_print.c
@@ -0,0 +1,999 @@
+#include "test/jemalloc_test.h"
+
+#include "jemalloc/internal/util.h"
+
+typedef enum {
+	TOKEN_TYPE_NONE,
+	TOKEN_TYPE_ERROR,
+	TOKEN_TYPE_EOI,
+	TOKEN_TYPE_NULL,
+	TOKEN_TYPE_FALSE,
+	TOKEN_TYPE_TRUE,
+	TOKEN_TYPE_LBRACKET,
+	TOKEN_TYPE_RBRACKET,
+	TOKEN_TYPE_LBRACE,
+	TOKEN_TYPE_RBRACE,
+	TOKEN_TYPE_COLON,
+	TOKEN_TYPE_COMMA,
+	TOKEN_TYPE_STRING,
+	TOKEN_TYPE_NUMBER
+} token_type_t;
+
+typedef struct parser_s parser_t;
+typedef struct {
+	parser_t	*parser;
+	token_type_t	token_type;
+	size_t		pos;
+	size_t		len;
+	size_t		line;
+	size_t		col;
+} token_t;
+
+struct parser_s {
+	bool verbose;
+	char	*buf; /* '\0'-terminated. */
+	size_t	len; /* Number of characters preceding '\0' in buf. */
+	size_t	pos;
+	size_t	line;
+	size_t	col;
+	token_t	token;
+};
+
+static void
+token_init(token_t *token, parser_t *parser, token_type_t token_type,
+    size_t pos, size_t len, size_t line, size_t col) {
+	token->parser = parser;
+	token->token_type = token_type;
+	token->pos = pos;
+	token->len = len;
+	token->line = line;
+	token->col = col;
+}
+
+static void
+token_error(token_t *token) {
+	if (!token->parser->verbose) {
+		return;
+	}
+	switch (token->token_type) {
+	case TOKEN_TYPE_NONE:
+		not_reached();
+	case TOKEN_TYPE_ERROR:
+		malloc_printf("%zu:%zu: Unexpected character in token: ",
+		    token->line, token->col);
+		break;
+	default:
+		malloc_printf("%zu:%zu: Unexpected token: ", token->line,
+		    token->col);
+		break;
+	}
+	UNUSED ssize_t err = malloc_write_fd(STDERR_FILENO,
+	    &token->parser->buf[token->pos], token->len);
+	malloc_printf("\n");
+}
+
+static void
+parser_init(parser_t *parser, bool verbose) {
+	parser->verbose = verbose;
+	parser->buf = NULL;
+	parser->len = 0;
+	parser->pos = 0;
+	parser->line = 1;
+	parser->col = 0;
+}
+
+static void
+parser_fini(parser_t *parser) {
+	if (parser->buf != NULL) {
+		dallocx(parser->buf, MALLOCX_TCACHE_NONE);
+	}
+}
+
+static bool
+parser_append(parser_t *parser, const char *str) {
+	size_t len = strlen(str);
+	char *buf = (parser->buf == NULL) ? mallocx(len + 1,
+	    MALLOCX_TCACHE_NONE) : rallocx(parser->buf, parser->len + len + 1,
+	    MALLOCX_TCACHE_NONE);
+	if (buf == NULL) {
+		return true;
+	}
+	memcpy(&buf[parser->len], str, len + 1);
+	parser->buf = buf;
+	parser->len += len;
+	return false;
+}
+
+static bool
+parser_tokenize(parser_t *parser) {
+	enum {
+		STATE_START,
+		STATE_EOI,
+		STATE_N, STATE_NU, STATE_NUL, STATE_NULL,
+		STATE_F, STATE_FA, STATE_FAL, STATE_FALS, STATE_FALSE,
+		STATE_T, STATE_TR, STATE_TRU, STATE_TRUE,
+		STATE_LBRACKET,
+		STATE_RBRACKET,
+		STATE_LBRACE,
+		STATE_RBRACE,
+		STATE_COLON,
+		STATE_COMMA,
+		STATE_CHARS,
+		STATE_CHAR_ESCAPE,
+		STATE_CHAR_U, STATE_CHAR_UD, STATE_CHAR_UDD, STATE_CHAR_UDDD,
+		STATE_STRING,
+		STATE_MINUS,
+		STATE_LEADING_ZERO,
+		STATE_DIGITS,
+		STATE_DECIMAL,
+		STATE_FRAC_DIGITS,
+		STATE_EXP,
+		STATE_EXP_SIGN,
+		STATE_EXP_DIGITS,
+		STATE_ACCEPT
+	} state = STATE_START;
+	size_t token_pos JEMALLOC_CC_SILENCE_INIT(0);
+	size_t token_line JEMALLOC_CC_SILENCE_INIT(1);
+	size_t token_col JEMALLOC_CC_SILENCE_INIT(0);
+
+	expect_zu_le(parser->pos, parser->len,
+	    "Position is past end of buffer");
+
+	while (state != STATE_ACCEPT) {
+		char c = parser->buf[parser->pos];
+
+		switch (state) {
+		case STATE_START:
+			token_pos = parser->pos;
+			token_line = parser->line;
+			token_col = parser->col;
+			switch (c) {
+			case ' ': case '\b': case '\n': case '\r': case '\t':
+				break;
+			case '\0':
+				state = STATE_EOI;
+				break;
+			case 'n':
+				state = STATE_N;
+				break;
+			case 'f':
+				state = STATE_F;
+				break;
+			case 't':
+				state = STATE_T;
+				break;
+			case '[':
+				state = STATE_LBRACKET;
+				break;
+			case ']':
+				state = STATE_RBRACKET;
+				break;
+			case '{':
+				state = STATE_LBRACE;
+				break;
+			case '}':
+				state = STATE_RBRACE;
+				break;
+			case ':':
+				state = STATE_COLON;
+				break;
+			case ',':
+				state = STATE_COMMA;
+				break;
+			case '"':
+				state = STATE_CHARS;
+				break;
+			case '-':
+				state = STATE_MINUS;
+				break;
+			case '0':
+				state = STATE_LEADING_ZERO;
+				break;
+			case '1': case '2': case '3': case '4':
+			case '5': case '6': case '7': case '8': case '9':
+				state = STATE_DIGITS;
+				break;
+			default:
+				token_init(&parser->token, parser,
+				    TOKEN_TYPE_ERROR, token_pos, parser->pos + 1
+				    - token_pos, token_line, token_col);
+				return true;
+			}
+			break;
+		case STATE_EOI:
+			token_init(&parser->token, parser,
+			    TOKEN_TYPE_EOI, token_pos, parser->pos -
+			    token_pos, token_line, token_col);
+			state = STATE_ACCEPT;
+			break;
+		case STATE_N:
+			switch (c) {
+			case 'u':
+				state = STATE_NU;
+				break;
+			default:
+				token_init(&parser->token, parser,
+				    TOKEN_TYPE_ERROR, token_pos, parser->pos + 1
+				    - token_pos, token_line, token_col);
+				return true;
+			}
+			break;
+		case STATE_NU:
+			switch (c) {
+			case 'l':
+				state = STATE_NUL;
+				break;
+			default:
+				token_init(&parser->token, parser,
+				    TOKEN_TYPE_ERROR, token_pos, parser->pos + 1
+				    - token_pos, token_line, token_col);
+				return true;
+			}
+			break;
+		case STATE_NUL:
+			switch (c) {
+			case 'l':
+				state = STATE_NULL;
+				break;
+			default:
+				token_init(&parser->token, parser,
+				    TOKEN_TYPE_ERROR, token_pos, parser->pos + 1
+				    - token_pos, token_line, token_col);
+				return true;
+			}
+			break;
+		case STATE_NULL:
+			switch (c) {
+			case ' ': case '\b': case '\n': case '\r': case '\t':
+			case '\0':
+			case '[': case ']': case '{': case '}': case ':':
+			case ',':
+				break;
+			default:
+				token_init(&parser->token, parser,
+				    TOKEN_TYPE_ERROR, token_pos, parser->pos + 1
+				    - token_pos, token_line, token_col);
+				return true;
+			}
+			token_init(&parser->token, parser, TOKEN_TYPE_NULL,
+			    token_pos, parser->pos - token_pos, token_line,
+			    token_col);
+			state = STATE_ACCEPT;
+			break;
+		case STATE_F:
+			switch (c) {
+			case 'a':
+				state = STATE_FA;
+				break;
+			default:
+				token_init(&parser->token, parser,
+				    TOKEN_TYPE_ERROR, token_pos, parser->pos + 1
+				    - token_pos, token_line, token_col);
+				return true;
+			}
+			break;
+		case STATE_FA:
+			switch (c) {
+			case 'l':
+				state = STATE_FAL;
+				break;
+			default:
+				token_init(&parser->token, parser,
+				    TOKEN_TYPE_ERROR, token_pos, parser->pos + 1
+				    - token_pos, token_line, token_col);
+				return true;
+			}
+			break;
+		case STATE_FAL:
+			switch (c) {
+			case 's':
+				state = STATE_FALS;
+				break;
+			default:
+				token_init(&parser->token, parser,
+				    TOKEN_TYPE_ERROR, token_pos, parser->pos + 1
+				    - token_pos, token_line, token_col);
+				return true;
+			}
+			break;
+		case STATE_FALS:
+			switch (c) {
+			case 'e':
+				state = STATE_FALSE;
+				break;
+			default:
+				token_init(&parser->token, parser,
+				    TOKEN_TYPE_ERROR, token_pos, parser->pos + 1
+				    - token_pos, token_line, token_col);
+				return true;
+			}
+			break;
+		case STATE_FALSE:
+			switch (c) {
+			case ' ': case '\b': case '\n': case '\r': case '\t':
+			case '\0':
+			case '[': case ']': case '{': case '}': case ':':
+			case ',':
+				break;
+			default:
+				token_init(&parser->token, parser,
+				    TOKEN_TYPE_ERROR, token_pos, parser->pos + 1
+				    - token_pos, token_line, token_col);
+				return true;
+			}
+			token_init(&parser->token, parser,
+			    TOKEN_TYPE_FALSE, token_pos, parser->pos -
+			    token_pos, token_line, token_col);
+			state = STATE_ACCEPT;
+			break;
+		case STATE_T:
+			switch (c) {
+			case 'r':
+				state = STATE_TR;
+				break;
+			default:
+				token_init(&parser->token, parser,
+				    TOKEN_TYPE_ERROR, token_pos, parser->pos + 1
+				    - token_pos, token_line, token_col);
+				return true;
+			}
+			break;
+		case STATE_TR:
+			switch (c) {
+			case 'u':
+				state = STATE_TRU;
+				break;
+			default:
+				token_init(&parser->token, parser,
+				    TOKEN_TYPE_ERROR, token_pos, parser->pos + 1
+				    - token_pos, token_line, token_col);
+				return true;
+			}
+			break;
+		case STATE_TRU:
+			switch (c) {
+			case 'e':
+				state = STATE_TRUE;
+				break;
+			default:
+				token_init(&parser->token, parser,
+				    TOKEN_TYPE_ERROR, token_pos, parser->pos + 1
+				    - token_pos, token_line, token_col);
+				return true;
+			}
+			break;
+		case STATE_TRUE:
+			switch (c) {
+			case ' ': case '\b': case '\n': case '\r': case '\t':
+			case '\0':
+			case '[': case ']': case '{': case '}': case ':':
+			case ',':
+				break;
+			default:
+				token_init(&parser->token, parser,
+				    TOKEN_TYPE_ERROR, token_pos, parser->pos + 1
+				    - token_pos, token_line, token_col);
+				return true;
+			}
+			token_init(&parser->token, parser, TOKEN_TYPE_TRUE,
+			    token_pos, parser->pos - token_pos, token_line,
+			    token_col);
+			state = STATE_ACCEPT;
+			break;
+		case STATE_LBRACKET:
+			token_init(&parser->token, parser, TOKEN_TYPE_LBRACKET,
+			    token_pos, parser->pos - token_pos, token_line,
+			    token_col);
+			state = STATE_ACCEPT;
+			break;
+		case STATE_RBRACKET:
+			token_init(&parser->token, parser, TOKEN_TYPE_RBRACKET,
+			    token_pos, parser->pos - token_pos, token_line,
+			    token_col);
+			state = STATE_ACCEPT;
+			break;
+		case STATE_LBRACE:
+			token_init(&parser->token, parser, TOKEN_TYPE_LBRACE,
+			    token_pos, parser->pos - token_pos, token_line,
+			    token_col);
+			state = STATE_ACCEPT;
+			break;
+		case STATE_RBRACE:
+			token_init(&parser->token, parser, TOKEN_TYPE_RBRACE,
+			    token_pos, parser->pos - token_pos, token_line,
+			    token_col);
+			state = STATE_ACCEPT;
+			break;
+		case STATE_COLON:
+			token_init(&parser->token, parser, TOKEN_TYPE_COLON,
+			    token_pos, parser->pos - token_pos, token_line,
+			    token_col);
+			state = STATE_ACCEPT;
+			break;
+		case STATE_COMMA:
+			token_init(&parser->token, parser, TOKEN_TYPE_COMMA,
+			    token_pos, parser->pos - token_pos, token_line,
+			    token_col);
+			state = STATE_ACCEPT;
+			break;
+		case STATE_CHARS:
+			switch (c) {
+			case '\\':
+				state = STATE_CHAR_ESCAPE;
+				break;
+			case '"':
+				state = STATE_STRING;
+				break;
+			case 0x00: case 0x01: case 0x02: case 0x03: case 0x04:
+			case 0x05: case 0x06: case 0x07: case 0x08: case 0x09:
+			case 0x0a: case 0x0b: case 0x0c: case 0x0d: case 0x0e:
+			case 0x0f: case 0x10: case 0x11: case 0x12: case 0x13:
+			case 0x14: case 0x15: case 0x16: case 0x17: case 0x18:
+			case 0x19: case 0x1a: case 0x1b: case 0x1c: case 0x1d:
+			case 0x1e: case 0x1f:
+				token_init(&parser->token, parser,
+				    TOKEN_TYPE_ERROR, token_pos, parser->pos + 1
+				    - token_pos, token_line, token_col);
+				return true;
+			default:
+				break;
+			}
+			break;
+		case STATE_CHAR_ESCAPE:
+			switch (c) {
+			case '"': case '\\': case '/': case 'b': case 'n':
+			case 'r': case 't':
+				state = STATE_CHARS;
+				break;
+			case 'u':
+				state = STATE_CHAR_U;
+				break;
+			default:
+				token_init(&parser->token, parser,
+				    TOKEN_TYPE_ERROR, token_pos, parser->pos + 1
+				    - token_pos, token_line, token_col);
+				return true;
+			}
+			break;
+		case STATE_CHAR_U:
+			switch (c) {
+			case '0': case '1': case '2': case '3': case '4':
+			case '5': case '6': case '7': case '8': case '9':
+			case 'a': case 'b': case 'c': case 'd': case 'e':
+			case 'f':
+			case 'A': case 'B': case 'C': case 'D': case 'E':
+			case 'F':
+				state = STATE_CHAR_UD;
+				break;
+			default:
+				token_init(&parser->token, parser,
+				    TOKEN_TYPE_ERROR, token_pos, parser->pos + 1
+				    - token_pos, token_line, token_col);
+				return true;
+			}
+			break;
+		case STATE_CHAR_UD:
+			switch (c) {
+			case '0': case '1': case '2': case '3': case '4':
+			case '5': case '6': case '7': case '8': case '9':
+			case 'a': case 'b': case 'c': case 'd': case 'e':
+			case 'f':
+			case 'A': case 'B': case 'C': case 'D': case 'E':
+			case 'F':
+				state = STATE_CHAR_UDD;
+				break;
+			default:
+				token_init(&parser->token, parser,
+				    TOKEN_TYPE_ERROR, token_pos, parser->pos + 1
+				    - token_pos, token_line, token_col);
+				return true;
+			}
+			break;
+		case STATE_CHAR_UDD:
+			switch (c) {
+			case '0': case '1': case '2': case '3': case '4':
+			case '5': case '6': case '7': case '8': case '9':
+			case 'a': case 'b': case 'c': case 'd': case 'e':
+			case 'f':
+			case 'A': case 'B': case 'C': case 'D': case 'E':
+			case 'F':
+				state = STATE_CHAR_UDDD;
+				break;
+			default:
+				token_init(&parser->token, parser,
+				    TOKEN_TYPE_ERROR, token_pos, parser->pos + 1
+				    - token_pos, token_line, token_col);
+				return true;
+			}
+			break;
+		case STATE_CHAR_UDDD:
+			switch (c) {
+			case '0': case '1': case '2': case '3': case '4':
+			case '5': case '6': case '7': case '8': case '9':
+			case 'a': case 'b': case 'c': case 'd': case 'e':
+			case 'f':
+			case 'A': case 'B': case 'C': case 'D': case 'E':
+			case 'F':
+				state = STATE_CHARS;
+				break;
+			default:
+				token_init(&parser->token, parser,
+				    TOKEN_TYPE_ERROR, token_pos, parser->pos + 1
+				    - token_pos, token_line, token_col);
+				return true;
+			}
+			break;
+		case STATE_STRING:
+			token_init(&parser->token, parser, TOKEN_TYPE_STRING,
+			    token_pos, parser->pos - token_pos, token_line,
+			    token_col);
+			state = STATE_ACCEPT;
+			break;
+		case STATE_MINUS:
+			switch (c) {
+			case '0':
+				state = STATE_LEADING_ZERO;
+				break;
+			case '1': case '2': case '3': case '4':
+			case '5': case '6': case '7': case '8': case '9':
+				state = STATE_DIGITS;
+				break;
+			default:
+				token_init(&parser->token, parser,
+				    TOKEN_TYPE_ERROR, token_pos, parser->pos + 1
+				    - token_pos, token_line, token_col);
+				return true;
+			}
+			break;
+		case STATE_LEADING_ZERO:
+			switch (c) {
+			case '.':
+				state = STATE_DECIMAL;
+				break;
+			default:
+				token_init(&parser->token, parser,
+				    TOKEN_TYPE_NUMBER, token_pos, parser->pos -
+				    token_pos, token_line, token_col);
+				state = STATE_ACCEPT;
+				break;
+			}
+			break;
+		case STATE_DIGITS:
+			switch (c) {
+			case '0': case '1': case '2': case '3': case '4':
+			case '5': case '6': case '7': case '8': case '9':
+				break;
+			case '.':
+				state = STATE_DECIMAL;
+				break;
+			default:
+				token_init(&parser->token, parser,
+				    TOKEN_TYPE_NUMBER, token_pos, parser->pos -
+				    token_pos, token_line, token_col);
+				state = STATE_ACCEPT;
+				break;
+			}
+			break;
+		case STATE_DECIMAL:
+			switch (c) {
+			case '0': case '1': case '2': case '3': case '4':
+			case '5': case '6': case '7': case '8': case '9':
+				state = STATE_FRAC_DIGITS;
+				break;
+			default:
+				token_init(&parser->token, parser,
+				    TOKEN_TYPE_ERROR, token_pos, parser->pos + 1
+				    - token_pos, token_line, token_col);
+				return true;
+			}
+			break;
+		case STATE_FRAC_DIGITS:
+			switch (c) {
+			case '0': case '1': case '2': case '3': case '4':
+			case '5': case '6': case '7': case '8': case '9':
+				break;
+			case 'e': case 'E':
+				state = STATE_EXP;
+				break;
+			default:
+				token_init(&parser->token, parser,
+				    TOKEN_TYPE_NUMBER, token_pos, parser->pos -
+				    token_pos, token_line, token_col);
+				state = STATE_ACCEPT;
+				break;
+			}
+			break;
+		case STATE_EXP:
+			switch (c) {
+			case '-': case '+':
+				state = STATE_EXP_SIGN;
+				break;
+			case '0': case '1': case '2': case '3': case '4':
+			case '5': case '6': case '7': case '8': case '9':
+				state = STATE_EXP_DIGITS;
+				break;
+			default:
+				token_init(&parser->token, parser,
+				    TOKEN_TYPE_ERROR, token_pos, parser->pos + 1
+				    - token_pos, token_line, token_col);
+				return true;
+			}
+			break;
+		case STATE_EXP_SIGN:
+			switch (c) {
+			case '0': case '1': case '2': case '3': case '4':
+			case '5': case '6': case '7': case '8': case '9':
+				state = STATE_EXP_DIGITS;
+				break;
+			default:
+				token_init(&parser->token, parser,
+				    TOKEN_TYPE_ERROR, token_pos, parser->pos + 1
+				    - token_pos, token_line, token_col);
+				return true;
+			}
+			break;
+		case STATE_EXP_DIGITS:
+			switch (c) {
+			case '0': case '1': case '2': case '3': case '4':
+			case '5': case '6': case '7': case '8': case '9':
+				break;
+			default:
+				token_init(&parser->token, parser,
+				    TOKEN_TYPE_NUMBER, token_pos, parser->pos -
+				    token_pos, token_line, token_col);
+				state = STATE_ACCEPT;
+				break;
+			}
+			break;
+		default:
+			not_reached();
+		}
+
+		if (state != STATE_ACCEPT) {
+			if (c == '\n') {
+				parser->line++;
+				parser->col = 0;
+			} else {
+				parser->col++;
+			}
+			parser->pos++;
+		}
+	}
+	return false;
+}
+
+static bool	parser_parse_array(parser_t *parser);
+static bool	parser_parse_object(parser_t *parser);
+
+static bool
+parser_parse_value(parser_t *parser) {
+	switch (parser->token.token_type) {
+	case TOKEN_TYPE_NULL:
+	case TOKEN_TYPE_FALSE:
+	case TOKEN_TYPE_TRUE:
+	case TOKEN_TYPE_STRING:
+	case TOKEN_TYPE_NUMBER:
+		return false;
+	case TOKEN_TYPE_LBRACE:
+		return parser_parse_object(parser);
+	case TOKEN_TYPE_LBRACKET:
+		return parser_parse_array(parser);
+	default:
+		return true;
+	}
+	not_reached();
+}
+
+static bool
+parser_parse_pair(parser_t *parser) {
+	expect_d_eq(parser->token.token_type, TOKEN_TYPE_STRING,
+	    "Pair should start with string");
+	if (parser_tokenize(parser)) {
+		return true;
+	}
+	switch (parser->token.token_type) {
+	case TOKEN_TYPE_COLON:
+		if (parser_tokenize(parser)) {
+			return true;
+		}
+		return parser_parse_value(parser);
+	default:
+		return true;
+	}
+}
+
+static bool
+parser_parse_values(parser_t *parser) {
+	if (parser_parse_value(parser)) {
+		return true;
+	}
+
+	while (true) {
+		if (parser_tokenize(parser)) {
+			return true;
+		}
+		switch (parser->token.token_type) {
+		case TOKEN_TYPE_COMMA:
+			if (parser_tokenize(parser)) {
+				return true;
+			}
+			if (parser_parse_value(parser)) {
+				return true;
+			}
+			break;
+		case TOKEN_TYPE_RBRACKET:
+			return false;
+		default:
+			return true;
+		}
+	}
+}
+
+static bool
+parser_parse_array(parser_t *parser) {
+	expect_d_eq(parser->token.token_type, TOKEN_TYPE_LBRACKET,
+	    "Array should start with [");
+	if (parser_tokenize(parser)) {
+		return true;
+	}
+	switch (parser->token.token_type) {
+	case TOKEN_TYPE_RBRACKET:
+		return false;
+	default:
+		return parser_parse_values(parser);
+	}
+	not_reached();
+}
+
+static bool
+parser_parse_pairs(parser_t *parser) {
+	expect_d_eq(parser->token.token_type, TOKEN_TYPE_STRING,
+	    "Object should start with string");
+	if (parser_parse_pair(parser)) {
+		return true;
+	}
+
+	while (true) {
+		if (parser_tokenize(parser)) {
+			return true;
+		}
+		switch (parser->token.token_type) {
+		case TOKEN_TYPE_COMMA:
+			if (parser_tokenize(parser)) {
+				return true;
+			}
+			switch (parser->token.token_type) {
+			case TOKEN_TYPE_STRING:
+				if (parser_parse_pair(parser)) {
+					return true;
+				}
+				break;
+			default:
+				return true;
+			}
+			break;
+		case TOKEN_TYPE_RBRACE:
+			return false;
+		default:
+			return true;
+		}
+	}
+}
+
+static bool
+parser_parse_object(parser_t *parser) {
+	expect_d_eq(parser->token.token_type, TOKEN_TYPE_LBRACE,
+	    "Object should start with {");
+	if (parser_tokenize(parser)) {
+		return true;
+	}
+	switch (parser->token.token_type) {
+	case TOKEN_TYPE_STRING:
+		return parser_parse_pairs(parser);
+	case TOKEN_TYPE_RBRACE:
+		return false;
+	default:
+		return true;
+	}
+	not_reached();
+}
+
+static bool
+parser_parse(parser_t *parser) {
+	if (parser_tokenize(parser)) {
+		goto label_error;
+	}
+	if (parser_parse_value(parser)) {
+		goto label_error;
+	}
+
+	if (parser_tokenize(parser)) {
+		goto label_error;
+	}
+	switch (parser->token.token_type) {
+	case TOKEN_TYPE_EOI:
+		return false;
+	default:
+		goto label_error;
+	}
+	not_reached();
+
+label_error:
+	token_error(&parser->token);
+	return true;
+}
+
+TEST_BEGIN(test_json_parser) {
+	size_t i;
+	const char *invalid_inputs[] = {
+		/* Tokenizer error case tests. */
+		"{ \"string\": X }",
+		"{ \"string\": nXll }",
+		"{ \"string\": nuXl }",
+		"{ \"string\": nulX }",
+		"{ \"string\": nullX }",
+		"{ \"string\": fXlse }",
+		"{ \"string\": faXse }",
+		"{ \"string\": falXe }",
+		"{ \"string\": falsX }",
+		"{ \"string\": falseX }",
+		"{ \"string\": tXue }",
+		"{ \"string\": trXe }",
+		"{ \"string\": truX }",
+		"{ \"string\": trueX }",
+		"{ \"string\": \"\n\" }",
+		"{ \"string\": \"\\z\" }",
+		"{ \"string\": \"\\uX000\" }",
+		"{ \"string\": \"\\u0X00\" }",
+		"{ \"string\": \"\\u00X0\" }",
+		"{ \"string\": \"\\u000X\" }",
+		"{ \"string\": -X }",
+		"{ \"string\": 0.X }",
+		"{ \"string\": 0.0eX }",
+		"{ \"string\": 0.0e+X }",
+
+		/* Parser error test cases. */
+		"{\"string\": }",
+		"{\"string\" }",
+		"{\"string\": [ 0 }",
+		"{\"string\": {\"a\":0, 1 } }",
+		"{\"string\": {\"a\":0: } }",
+		"{",
+		"{}{",
+	};
+	const char *valid_inputs[] = {
+		/* Token tests. */
+		"null",
+		"false",
+		"true",
+		"{}",
+		"{\"a\": 0}",
+		"[]",
+		"[0, 1]",
+		"0",
+		"1",
+		"10",
+		"-10",
+		"10.23",
+		"10.23e4",
+		"10.23e-4",
+		"10.23e+4",
+		"10.23E4",
+		"10.23E-4",
+		"10.23E+4",
+		"-10.23",
+		"-10.23e4",
+		"-10.23e-4",
+		"-10.23e+4",
+		"-10.23E4",
+		"-10.23E-4",
+		"-10.23E+4",
+		"\"value\"",
+		"\" \\\" \\/ \\b \\n \\r \\t \\u0abc \\u1DEF \"",
+
+		/* Parser test with various nesting. */
+		"{\"a\":null, \"b\":[1,[{\"c\":2},3]], \"d\":{\"e\":true}}",
+	};
+
+	for (i = 0; i < sizeof(invalid_inputs)/sizeof(const char *); i++) {
+		const char *input = invalid_inputs[i];
+		parser_t parser;
+		parser_init(&parser, false);
+		expect_false(parser_append(&parser, input),
+		    "Unexpected input appending failure");
+		expect_true(parser_parse(&parser),
+		    "Unexpected parse success for input: %s", input);
+		parser_fini(&parser);
+	}
+
+	for (i = 0; i < sizeof(valid_inputs)/sizeof(const char *); i++) {
+		const char *input = valid_inputs[i];
+		parser_t parser;
+		parser_init(&parser, true);
+		expect_false(parser_append(&parser, input),
+		    "Unexpected input appending failure");
+		expect_false(parser_parse(&parser),
+		    "Unexpected parse error for input: %s", input);
+		parser_fini(&parser);
+	}
+}
+TEST_END
+
+void
+write_cb(void *opaque, const char *str) {
+	parser_t *parser = (parser_t *)opaque;
+	if (parser_append(parser, str)) {
+		test_fail("Unexpected input appending failure");
+	}
+}
+
+TEST_BEGIN(test_stats_print_json) {
+	const char *opts[] = {
+		"J",
+		"Jg",
+		"Jm",
+		"Jd",
+		"Jmd",
+		"Jgd",
+		"Jgm",
+		"Jgmd",
+		"Ja",
+		"Jb",
+		"Jl",
+		"Jx",
+		"Jbl",
+		"Jal",
+		"Jab",
+		"Jabl",
+		"Jax",
+		"Jbx",
+		"Jlx",
+		"Jablx",
+		"Jgmdablx",
+	};
+	unsigned arena_ind, i;
+
+	for (i = 0; i < 3; i++) {
+		unsigned j;
+
+		switch (i) {
+		case 0:
+			break;
+		case 1: {
+			size_t sz = sizeof(arena_ind);
+			expect_d_eq(mallctl("arenas.create", (void *)&arena_ind,
+			    &sz, NULL, 0), 0, "Unexpected mallctl failure");
+			break;
+		} case 2: {
+			size_t mib[3];
+			size_t miblen = sizeof(mib)/sizeof(size_t);
+			expect_d_eq(mallctlnametomib("arena.0.destroy",
+			    mib, &miblen), 0,
+			    "Unexpected mallctlnametomib failure");
+			mib[1] = arena_ind;
+			expect_d_eq(mallctlbymib(mib, miblen, NULL, NULL, NULL,
+			    0), 0, "Unexpected mallctlbymib failure");
+			break;
+		} default:
+			not_reached();
+		}
+
+		for (j = 0; j < sizeof(opts)/sizeof(const char *); j++) {
+			parser_t parser;
+
+			parser_init(&parser, true);
+			malloc_stats_print(write_cb, (void *)&parser, opts[j]);
+			expect_false(parser_parse(&parser),
+			    "Unexpected parse error, opts=\"%s\"", opts[j]);
+			parser_fini(&parser);
+		}
+	}
+}
+TEST_END
+
+int
+main(void) {
+	return test(
+	    test_json_parser,
+	    test_stats_print_json);
+}
diff --git a/deps/jemalloc/test/unit/sz.c b/deps/jemalloc/test/unit/sz.c
new file mode 100644
index 0000000..8ae04b9
--- /dev/null
+++ b/deps/jemalloc/test/unit/sz.c
@@ -0,0 +1,66 @@
+#include "test/jemalloc_test.h"
+
+TEST_BEGIN(test_sz_psz2ind) {
+	/*
+	 * Testing page size classes which reside prior to the regular group
+	 * with all size classes divisible by page size.
+	 * For x86_64 Linux, it's 4096, 8192, 12288, 16384, with corresponding
+	 * pszind 0, 1, 2 and 3.
+	 */
+	for (size_t i = 0; i < SC_NGROUP; i++) {
+		for (size_t psz = i * PAGE + 1; psz <= (i + 1) * PAGE; psz++) {
+			pszind_t ind = sz_psz2ind(psz);
+			expect_zu_eq(ind, i, "Got %u as sz_psz2ind of %zu", ind,
+			    psz);
+		}
+	}
+
+	sc_data_t data;
+	memset(&data, 0, sizeof(data));
+	sc_data_init(&data);
+	/*
+	 * 'base' is the base of the first regular group with all size classes
+	 * divisible by page size.
+	 * For x86_64 Linux, it's 16384, and base_ind is 36.
+	 */
+	size_t base_psz = 1 << (SC_LG_NGROUP + LG_PAGE);
+	size_t base_ind = 0;
+	while (base_ind < SC_NSIZES &&
+	    reg_size_compute(data.sc[base_ind].lg_base,
+		data.sc[base_ind].lg_delta,
+		data.sc[base_ind].ndelta) < base_psz) {
+		base_ind++;
+	}
+	expect_zu_eq(
+	    reg_size_compute(data.sc[base_ind].lg_base,
+		data.sc[base_ind].lg_delta, data.sc[base_ind].ndelta),
+	    base_psz, "Size class equal to %zu not found", base_psz);
+	/*
+	 * Test different sizes falling into groups after the 'base'. The
+	 * increment is PAGE / 3 for the execution speed purpose.
+	 */
+	base_ind -= SC_NGROUP;
+	for (size_t psz = base_psz; psz <= 64 * 1024 * 1024; psz += PAGE / 3) {
+		pszind_t ind = sz_psz2ind(psz);
+		sc_t gt_sc = data.sc[ind + base_ind];
+		expect_zu_gt(psz,
+		    reg_size_compute(gt_sc.lg_base, gt_sc.lg_delta,
+			gt_sc.ndelta),
+		    "Got %u as sz_psz2ind of %zu", ind, psz);
+		sc_t le_sc = data.sc[ind + base_ind + 1];
+		expect_zu_le(psz,
+		    reg_size_compute(le_sc.lg_base, le_sc.lg_delta,
+			le_sc.ndelta),
+		    "Got %u as sz_psz2ind of %zu", ind, psz);
+	}
+
+	pszind_t max_ind = sz_psz2ind(SC_LARGE_MAXCLASS + 1);
+	expect_lu_eq(max_ind, SC_NPSIZES,
+	    "Got %u as sz_psz2ind of %llu", max_ind, SC_LARGE_MAXCLASS);
+}
+TEST_END
+
+int
+main(void) {
+	return test(test_sz_psz2ind);
+}
diff --git a/deps/jemalloc/test/unit/tcache_max.c b/deps/jemalloc/test/unit/tcache_max.c
new file mode 100644
index 0000000..1f657c8
--- /dev/null
+++ b/deps/jemalloc/test/unit/tcache_max.c
@@ -0,0 +1,175 @@
+#include "test/jemalloc_test.h"
+#include "test/san.h"
+
+const char *malloc_conf = TEST_SAN_UAF_ALIGN_DISABLE;
+
+enum {
+	alloc_option_start = 0,
+	use_malloc = 0,
+	use_mallocx,
+	alloc_option_end
+};
+
+enum {
+	dalloc_option_start = 0,
+	use_free = 0,
+	use_dallocx,
+	use_sdallocx,
+	dalloc_option_end
+};
+
+static unsigned alloc_option, dalloc_option;
+static size_t tcache_max;
+
+static void *
+alloc_func(size_t sz) {
+	void *ret;
+
+	switch (alloc_option) {
+	case use_malloc:
+		ret = malloc(sz);
+		break;
+	case use_mallocx:
+		ret = mallocx(sz, 0);
+		break;
+	default:
+		unreachable();
+	}
+	expect_ptr_not_null(ret, "Unexpected malloc / mallocx failure");
+
+	return ret;
+}
+
+static void
+dalloc_func(void *ptr, size_t sz) {
+	switch (dalloc_option) {
+	case use_free:
+		free(ptr);
+		break;
+	case use_dallocx:
+		dallocx(ptr, 0);
+		break;
+	case use_sdallocx:
+		sdallocx(ptr, sz, 0);
+		break;
+	default:
+		unreachable();
+	}
+}
+
+static size_t
+tcache_bytes_read(void) {
+	uint64_t epoch;
+	assert_d_eq(mallctl("epoch", NULL, NULL, (void *)&epoch, sizeof(epoch)),
+	    0, "Unexpected mallctl() failure");
+
+	size_t tcache_bytes;
+	size_t sz = sizeof(tcache_bytes);
+	assert_d_eq(mallctl(
+	    "stats.arenas." STRINGIFY(MALLCTL_ARENAS_ALL) ".tcache_bytes",
+	    &tcache_bytes, &sz, NULL, 0), 0, "Unexpected mallctl failure");
+
+	return tcache_bytes;
+}
+
+static void
+tcache_bytes_check_update(size_t *prev, ssize_t diff) {
+	size_t tcache_bytes = tcache_bytes_read();
+	expect_zu_eq(tcache_bytes, *prev + diff, "tcache bytes not expected");
+
+	*prev += diff;
+}
+
+static void
+test_tcache_bytes_alloc(size_t alloc_size) {
+	expect_d_eq(mallctl("thread.tcache.flush", NULL, NULL, NULL, 0), 0,
+	    "Unexpected tcache flush failure");
+
+	size_t usize = sz_s2u(alloc_size);
+	/* No change is expected if usize is outside of tcache_max range. */
+	bool cached = (usize <= tcache_max);
+	ssize_t diff = cached ? usize : 0;
+
+	void *ptr1 = alloc_func(alloc_size);
+	void *ptr2 = alloc_func(alloc_size);
+
+	size_t bytes = tcache_bytes_read();
+	dalloc_func(ptr2, alloc_size);
+	/* Expect tcache_bytes increase after dalloc */
+	tcache_bytes_check_update(&bytes, diff);
+
+	dalloc_func(ptr1, alloc_size);
+	/* Expect tcache_bytes increase again */
+	tcache_bytes_check_update(&bytes, diff);
+
+	void *ptr3 = alloc_func(alloc_size);
+	if (cached) {
+		expect_ptr_eq(ptr1, ptr3, "Unexpected cached ptr");
+	}
+	/* Expect tcache_bytes decrease after alloc */
+	tcache_bytes_check_update(&bytes, -diff);
+
+	void *ptr4 = alloc_func(alloc_size);
+	if (cached) {
+		expect_ptr_eq(ptr2, ptr4, "Unexpected cached ptr");
+	}
+	/* Expect tcache_bytes decrease again */
+	tcache_bytes_check_update(&bytes, -diff);
+
+	dalloc_func(ptr3, alloc_size);
+	tcache_bytes_check_update(&bytes, diff);
+	dalloc_func(ptr4, alloc_size);
+	tcache_bytes_check_update(&bytes, diff);
+}
+
+static void
+test_tcache_max_impl(void) {
+	size_t sz;
+	sz = sizeof(tcache_max);
+	assert_d_eq(mallctl("arenas.tcache_max", (void *)&tcache_max,
+	    &sz, NULL, 0), 0, "Unexpected mallctl() failure");
+
+	/* opt.tcache_max set to 1024 in tcache_max.sh */
+	expect_zu_eq(tcache_max, 1024, "tcache_max not expected");
+
+	test_tcache_bytes_alloc(1);
+	test_tcache_bytes_alloc(tcache_max - 1);
+	test_tcache_bytes_alloc(tcache_max);
+	test_tcache_bytes_alloc(tcache_max + 1);
+
+	test_tcache_bytes_alloc(PAGE - 1);
+	test_tcache_bytes_alloc(PAGE);
+	test_tcache_bytes_alloc(PAGE + 1);
+
+	size_t large;
+	sz = sizeof(large);
+	assert_d_eq(mallctl("arenas.lextent.0.size", (void *)&large, &sz, NULL,
+	    0), 0, "Unexpected mallctl() failure");
+
+	test_tcache_bytes_alloc(large - 1);
+	test_tcache_bytes_alloc(large);
+	test_tcache_bytes_alloc(large + 1);
+}
+
+TEST_BEGIN(test_tcache_max) {
+	test_skip_if(!config_stats);
+	test_skip_if(!opt_tcache);
+	test_skip_if(opt_prof);
+	test_skip_if(san_uaf_detection_enabled());
+
+	for (alloc_option = alloc_option_start;
+	     alloc_option < alloc_option_end;
+	     alloc_option++) {
+		for (dalloc_option = dalloc_option_start;
+		     dalloc_option < dalloc_option_end;
+		     dalloc_option++) {
+			test_tcache_max_impl();
+		}
+	}
+}
+TEST_END
+
+int
+main(void) {
+	return test(test_tcache_max);
+}
diff --git a/deps/jemalloc/test/unit/tcache_max.sh b/deps/jemalloc/test/unit/tcache_max.sh
new file mode 100644
index 0000000..4480d73
--- /dev/null
+++ b/deps/jemalloc/test/unit/tcache_max.sh
@@ -0,0 +1,3 @@
+#!/bin/sh
+
+export MALLOC_CONF="tcache_max:1024"
diff --git a/deps/jemalloc/test/unit/test_hooks.c b/deps/jemalloc/test/unit/test_hooks.c
new file mode 100644
index 0000000..8cd2b3b
--- /dev/null
+++ b/deps/jemalloc/test/unit/test_hooks.c
@@ -0,0 +1,38 @@
+#include "test/jemalloc_test.h"
+
+static bool hook_called = false;
+
+static void
+hook() {
+	hook_called = true;
+}
+
+static int
+func_to_hook(int arg1, int arg2) {
+	return arg1 + arg2;
+}
+
+#define func_to_hook JEMALLOC_TEST_HOOK(func_to_hook, test_hooks_libc_hook)
+
+TEST_BEGIN(unhooked_call) {
+	test_hooks_libc_hook = NULL;
+	hook_called = false;
+	expect_d_eq(3, func_to_hook(1, 2), "Hooking changed return value.");
+	expect_false(hook_called, "Nulling out hook didn't take.");
+}
+TEST_END
+
+TEST_BEGIN(hooked_call) {
+	test_hooks_libc_hook = &hook;
+	hook_called = false;
+	expect_d_eq(3, func_to_hook(1, 2), "Hooking changed return value.");
+	expect_true(hook_called, "Hook should have executed.");
+}
+TEST_END
+
+int
+main(void) {
+	return test(
+	    unhooked_call,
+	    hooked_call);
+}
diff --git a/deps/jemalloc/test/unit/thread_event.c b/deps/jemalloc/test/unit/thread_event.c
new file mode 100644
index 0000000..e0b88a9
--- /dev/null
+++ b/deps/jemalloc/test/unit/thread_event.c
@@ -0,0 +1,34 @@
+#include "test/jemalloc_test.h"
+
+TEST_BEGIN(test_next_event_fast) {
+	tsd_t *tsd = tsd_fetch();
+	te_ctx_t ctx;
+	te_ctx_get(tsd, &ctx, true);
+
+	te_ctx_last_event_set(&ctx, 0);
+	te_ctx_current_bytes_set(&ctx, TE_NEXT_EVENT_FAST_MAX - 8U);
+	te_ctx_next_event_set(tsd, &ctx, TE_NEXT_EVENT_FAST_MAX);
+#define E(event, condition, is_alloc)					\
+	if (is_alloc && condition) {					\
+		event##_event_wait_set(tsd, TE_NEXT_EVENT_FAST_MAX);	\
+	}
+	ITERATE_OVER_ALL_EVENTS
+#undef E
+
+	/* Test next_event_fast rolling back to 0. */
+	void *p = malloc(16U);
+	assert_ptr_not_null(p, "malloc() failed");
+	free(p);
+
+	/* Test next_event_fast resuming to be equal to next_event. */
+	void *q = malloc(SC_LOOKUP_MAXCLASS);
+	assert_ptr_not_null(q, "malloc() failed");
+	free(q);
+}
+TEST_END
+
+int
+main(void) {
+	return test(
+	    test_next_event_fast);
+}
diff --git a/deps/jemalloc/test/unit/thread_event.sh b/deps/jemalloc/test/unit/thread_event.sh
new file mode 100644
index 0000000..8fcc7d8
--- /dev/null
+++ b/deps/jemalloc/test/unit/thread_event.sh
@@ -0,0 +1,5 @@
+#!/bin/sh
+
+if [ "x${enable_prof}" = "x1" ] ; then
+  export MALLOC_CONF="prof:true,lg_prof_sample:0"
+fi
diff --git a/deps/jemalloc/test/unit/ticker.c b/deps/jemalloc/test/unit/ticker.c
new file mode 100644
index 0000000..0dd7786
--- /dev/null
+++ b/deps/jemalloc/test/unit/ticker.c
@@ -0,0 +1,100 @@
+#include "test/jemalloc_test.h"
+
+#include "jemalloc/internal/ticker.h"
+
+TEST_BEGIN(test_ticker_tick) {
+#define NREPS 2
+#define NTICKS 3
+	ticker_t ticker;
+	int32_t i, j;
+
+	ticker_init(&ticker, NTICKS);
+	for (i = 0; i < NREPS; i++) {
+		for (j = 0; j < NTICKS; j++) {
+			expect_u_eq(ticker_read(&ticker), NTICKS - j,
+			    "Unexpected ticker value (i=%d, j=%d)", i, j);
+			expect_false(ticker_tick(&ticker),
+			    "Unexpected ticker fire (i=%d, j=%d)", i, j);
+		}
+		expect_u32_eq(ticker_read(&ticker), 0,
+		    "Expected ticker depletion");
+		expect_true(ticker_tick(&ticker),
+		    "Expected ticker fire (i=%d)", i);
+		expect_u32_eq(ticker_read(&ticker), NTICKS,
+		    "Expected ticker reset");
+	}
+#undef NTICKS
+}
+TEST_END
+
+TEST_BEGIN(test_ticker_ticks) {
+#define NTICKS 3
+	ticker_t ticker;
+
+	ticker_init(&ticker, NTICKS);
+
+	expect_u_eq(ticker_read(&ticker), NTICKS, "Unexpected ticker value");
+	expect_false(ticker_ticks(&ticker, NTICKS), "Unexpected ticker fire");
+	expect_u_eq(ticker_read(&ticker), 0, "Unexpected ticker value");
+	expect_true(ticker_ticks(&ticker, NTICKS), "Expected ticker fire");
+	expect_u_eq(ticker_read(&ticker), NTICKS, "Unexpected ticker value");
+
+	expect_true(ticker_ticks(&ticker, NTICKS + 1), "Expected ticker fire");
+	expect_u_eq(ticker_read(&ticker), NTICKS, "Unexpected ticker value");
+#undef NTICKS
+}
+TEST_END
+
+TEST_BEGIN(test_ticker_copy) {
+#define NTICKS 3
+	ticker_t ta, tb;
+
+	ticker_init(&ta, NTICKS);
+	ticker_copy(&tb, &ta);
+	expect_u_eq(ticker_read(&tb), NTICKS, "Unexpected ticker value");
+	expect_true(ticker_ticks(&tb, NTICKS + 1), "Expected ticker fire");
+	expect_u_eq(ticker_read(&tb), NTICKS, "Unexpected ticker value");
+
+	ticker_tick(&ta);
+	ticker_copy(&tb, &ta);
+	expect_u_eq(ticker_read(&tb), NTICKS - 1, "Unexpected ticker value");
+	expect_true(ticker_ticks(&tb, NTICKS), "Expected ticker fire");
+	expect_u_eq(ticker_read(&tb), NTICKS, "Unexpected ticker value");
+#undef NTICKS
+}
+TEST_END
+
+TEST_BEGIN(test_ticker_geom) {
+	const int32_t ticks = 100;
+	const uint64_t niters = 100 * 1000;
+
+	ticker_geom_t ticker;
+	ticker_geom_init(&ticker, ticks);
+	uint64_t total_ticks = 0;
+	/* Just some random constant. */
+	uint64_t prng_state = 0x343219f93496db9fULL;
+	for (uint64_t i = 0; i < niters; i++) {
+		while(!ticker_geom_tick(&ticker, &prng_state)) {
+			total_ticks++;
+		}
+	}
+	/*
+	 * In fact, with this choice of random seed and the PRNG implementation
+	 * used at the time this was tested, total_ticks is 95.1% of the
+	 * expected ticks.
+	 */
+	expect_u64_ge(total_ticks , niters * ticks * 9 / 10,
+	    "Mean off by > 10%%");
+	expect_u64_le(total_ticks , niters * ticks * 11 / 10,
+	    "Mean off by > 10%%");
+}
+TEST_END
+
+int
+main(void) {
+	return test(
+	    test_ticker_tick,
+	    test_ticker_ticks,
+	    test_ticker_copy,
+	    test_ticker_geom);
+}
diff --git a/deps/jemalloc/test/unit/tsd.c b/deps/jemalloc/test/unit/tsd.c
new file mode 100644
index 0000000..205d870
--- /dev/null
+++ b/deps/jemalloc/test/unit/tsd.c
@@ -0,0 +1,274 @@
+#include "test/jemalloc_test.h"
+
+/*
+ * If we're e.g. in debug mode, we *never* enter the fast path, and so shouldn't
+ * be asserting that we're on one.
+ */
+static bool originally_fast;
+static int data_cleanup_count;
+
+void
+data_cleanup(int *data) {
+	if (data_cleanup_count == 0) {
+		expect_x_eq(*data, MALLOC_TSD_TEST_DATA_INIT,
+		    "Argument passed into cleanup function should match tsd "
+		    "value");
+	}
+	++data_cleanup_count;
+
+	/*
+	 * Allocate during cleanup for two rounds, in order to assure that
+	 * jemalloc's internal tsd reinitialization happens.
+	 */
+	bool reincarnate = false;
+	switch (*data) {
+	case MALLOC_TSD_TEST_DATA_INIT:
+		*data = 1;
+		reincarnate = true;
+		break;
+	case 1:
+		*data = 2;
+		reincarnate = true;
+		break;
+	case 2:
+		return;
+	default:
+		not_reached();
+	}
+
+	if (reincarnate) {
+		void *p = mallocx(1, 0);
+		expect_ptr_not_null(p, "Unexpeced mallocx() failure");
+		dallocx(p, 0);
+	}
+}
+
+static void *
+thd_start(void *arg) {
+	int d = (int)(uintptr_t)arg;
+	void *p;
+
+	/*
+	 * Test free before tsd init -- the free fast path (which does not
+	 * explicitly check for NULL) has to tolerate this case, and fall back
+	 * to free_default.
+	 */
+	free(NULL);
+
+	tsd_t *tsd = tsd_fetch();
+	expect_x_eq(tsd_test_data_get(tsd), MALLOC_TSD_TEST_DATA_INIT,
+	    "Initial tsd get should return initialization value");
+
+	p = malloc(1);
+	expect_ptr_not_null(p, "Unexpected malloc() failure");
+
+	tsd_test_data_set(tsd, d);
+	expect_x_eq(tsd_test_data_get(tsd), d,
+	    "After tsd set, tsd get should return value that was set");
+
+	d = 0;
+	expect_x_eq(tsd_test_data_get(tsd), (int)(uintptr_t)arg,
+	    "Resetting local data should have no effect on tsd");
+
+	tsd_test_callback_set(tsd, &data_cleanup);
+
+	free(p);
+	return NULL;
+}
+
+TEST_BEGIN(test_tsd_main_thread) {
+	thd_start((void *)(uintptr_t)0xa5f3e329);
+}
+TEST_END
+
+TEST_BEGIN(test_tsd_sub_thread) {
+	thd_t thd;
+
+	data_cleanup_count = 0;
+	thd_create(&thd, thd_start, (void *)MALLOC_TSD_TEST_DATA_INIT);
+	thd_join(thd, NULL);
+	/*
+	 * We reincarnate twice in the data cleanup, so it should execute at
+	 * least 3 times.
+	 */
+	expect_x_ge(data_cleanup_count, 3,
+	    "Cleanup function should have executed multiple times.");
+}
+TEST_END
+
+static void *
+thd_start_reincarnated(void *arg) {
+	tsd_t *tsd = tsd_fetch();
+	assert(tsd);
+
+	void *p = malloc(1);
+	expect_ptr_not_null(p, "Unexpected malloc() failure");
+
+	/* Manually trigger reincarnation. */
+	expect_ptr_not_null(tsd_arena_get(tsd),
+	    "Should have tsd arena set.");
+	tsd_cleanup((void *)tsd);
+	expect_ptr_null(*tsd_arenap_get_unsafe(tsd),
+	    "TSD arena should have been cleared.");
+	expect_u_eq(tsd_state_get(tsd), tsd_state_purgatory,
+	    "TSD state should be purgatory\n");
+
+	free(p);
+	expect_u_eq(tsd_state_get(tsd), tsd_state_reincarnated,
+	    "TSD state should be reincarnated\n");
+	p = mallocx(1, MALLOCX_TCACHE_NONE);
+	expect_ptr_not_null(p, "Unexpected malloc() failure");
+	expect_ptr_null(*tsd_arenap_get_unsafe(tsd),
+	    "Should not have tsd arena set after reincarnation.");
+
+	free(p);
+	tsd_cleanup((void *)tsd);
+	expect_ptr_null(*tsd_arenap_get_unsafe(tsd),
+	    "TSD arena should have been cleared after 2nd cleanup.");
+
+	return NULL;
+}
+
+TEST_BEGIN(test_tsd_reincarnation) {
+	thd_t thd;
+	thd_create(&thd, thd_start_reincarnated, NULL);
+	thd_join(thd, NULL);
+}
+TEST_END
+
+typedef struct {
+	atomic_u32_t phase;
+	atomic_b_t error;
+} global_slow_data_t;
+
+static void *
+thd_start_global_slow(void *arg) {
+	/* PHASE 0 */
+	global_slow_data_t *data = (global_slow_data_t *)arg;
+	free(mallocx(1, 0));
+
+	tsd_t *tsd = tsd_fetch();
+	/*
+	 * No global slowness has happened yet; there was an error if we were
+	 * originally fast but aren't now.
+	 */
+	atomic_store_b(&data->error, originally_fast && !tsd_fast(tsd),
+	    ATOMIC_SEQ_CST);
+	atomic_store_u32(&data->phase, 1, ATOMIC_SEQ_CST);
+
+	/* PHASE 2 */
+	while (atomic_load_u32(&data->phase, ATOMIC_SEQ_CST) != 2) {
+	}
+	free(mallocx(1, 0));
+	atomic_store_b(&data->error, tsd_fast(tsd), ATOMIC_SEQ_CST);
+	atomic_store_u32(&data->phase, 3, ATOMIC_SEQ_CST);
+
+	/* PHASE 4 */
+	while (atomic_load_u32(&data->phase, ATOMIC_SEQ_CST) != 4) {
+	}
+	free(mallocx(1, 0));
+	atomic_store_b(&data->error, tsd_fast(tsd), ATOMIC_SEQ_CST);
+	atomic_store_u32(&data->phase, 5, ATOMIC_SEQ_CST);
+
+	/* PHASE 6 */
+	while (atomic_load_u32(&data->phase, ATOMIC_SEQ_CST) != 6) {
+	}
+	free(mallocx(1, 0));
+	/* Only one decrement so far. */
+	atomic_store_b(&data->error, tsd_fast(tsd), ATOMIC_SEQ_CST);
+	atomic_store_u32(&data->phase, 7, ATOMIC_SEQ_CST);
+
+	/* PHASE 8 */
+	while (atomic_load_u32(&data->phase, ATOMIC_SEQ_CST) != 8) {
+	}
+	free(mallocx(1, 0));
+	/*
+	 * Both decrements happened; we should be fast again (if we ever
+	 * were)
+	 */
+	atomic_store_b(&data->error, originally_fast && !tsd_fast(tsd),
+	    ATOMIC_SEQ_CST);
+	atomic_store_u32(&data->phase, 9, ATOMIC_SEQ_CST);
+
+	return NULL;
+}
+
+TEST_BEGIN(test_tsd_global_slow) {
+	global_slow_data_t data = {ATOMIC_INIT(0), ATOMIC_INIT(false)};
+	/*
+	 * Note that the "mallocx" here (vs. malloc) is important, since the
+	 * compiler is allowed to optimize away free(malloc(1)) but not
+	 * free(mallocx(1)).
+	 */
+	free(mallocx(1, 0));
+	tsd_t *tsd = tsd_fetch();
+	originally_fast = tsd_fast(tsd);
+
+	thd_t thd;
+	thd_create(&thd, thd_start_global_slow, (void *)&data.phase);
+	/* PHASE 1 */
+	while (atomic_load_u32(&data.phase, ATOMIC_SEQ_CST) != 1) {
+		/*
+		 * We don't have a portable condvar/semaphore mechanism.
+		 * Spin-wait.
+		 */
+	}
+	expect_false(atomic_load_b(&data.error, ATOMIC_SEQ_CST), "");
+	tsd_global_slow_inc(tsd_tsdn(tsd));
+	free(mallocx(1, 0));
+	expect_false(tsd_fast(tsd), "");
+	atomic_store_u32(&data.phase, 2, ATOMIC_SEQ_CST);
+
+	/* PHASE 3 */
+	while (atomic_load_u32(&data.phase, ATOMIC_SEQ_CST) != 3) {
+	}
+	expect_false(atomic_load_b(&data.error, ATOMIC_SEQ_CST), "");
+	/* Increase again, so that we can test multiple fast/slow changes. */
+	tsd_global_slow_inc(tsd_tsdn(tsd));
+	atomic_store_u32(&data.phase, 4, ATOMIC_SEQ_CST);
+	free(mallocx(1, 0));
+	expect_false(tsd_fast(tsd), "");
+
+	/* PHASE 5 */
+	while (atomic_load_u32(&data.phase, ATOMIC_SEQ_CST) != 5) {
+	}
+	expect_false(atomic_load_b(&data.error, ATOMIC_SEQ_CST), "");
+	tsd_global_slow_dec(tsd_tsdn(tsd));
+	atomic_store_u32(&data.phase, 6, ATOMIC_SEQ_CST);
+	/* We only decreased once; things should still be slow. */
+	free(mallocx(1, 0));
+	expect_false(tsd_fast(tsd), "");
+
+	/* PHASE 7 */
+	while (atomic_load_u32(&data.phase, ATOMIC_SEQ_CST) != 7) {
+	}
+	expect_false(atomic_load_b(&data.error, ATOMIC_SEQ_CST), "");
+	tsd_global_slow_dec(tsd_tsdn(tsd));
+	atomic_store_u32(&data.phase, 8, ATOMIC_SEQ_CST);
+	/* We incremented and then decremented twice; we should be fast now. */
+	free(mallocx(1, 0));
+	expect_true(!originally_fast || tsd_fast(tsd), "");
+
+	/* PHASE 9 */
+	while (atomic_load_u32(&data.phase, ATOMIC_SEQ_CST) != 9) {
+	}
+	expect_false(atomic_load_b(&data.error, ATOMIC_SEQ_CST), "");
+
+	thd_join(thd, NULL);
+}
+TEST_END
+
+int
+main(void) {
+	/* Ensure tsd bootstrapped. */
+	if (nallocx(1, 0) == 0) {
+		malloc_printf("Initialization error");
+		return test_status_fail;
+	}
+
+	return test_no_reentrancy(
+	    test_tsd_main_thread,
+	    test_tsd_sub_thread,
+	    test_tsd_reincarnation,
+	    test_tsd_global_slow);
+}
diff --git a/deps/jemalloc/test/unit/uaf.c b/deps/jemalloc/test/unit/uaf.c
new file mode 100644
index 0000000..a8433c2
--- /dev/null
+++ b/deps/jemalloc/test/unit/uaf.c
@@ -0,0 +1,262 @@
+#include "test/jemalloc_test.h"
+#include "test/arena_util.h"
+#include "test/san.h"
+
+#include "jemalloc/internal/cache_bin.h"
+#include "jemalloc/internal/san.h"
+#include "jemalloc/internal/safety_check.h"
+
+const char *malloc_conf = TEST_SAN_UAF_ALIGN_ENABLE;
+
+static size_t san_uaf_align;
+
+static bool fake_abort_called;
+void fake_abort(const char *message) {
+	(void)message;
+	fake_abort_called = true;
+}
+
+static void
+test_write_after_free_pre(void) {
+	safety_check_set_abort(&fake_abort);
+	fake_abort_called = false;
+}
+
+static void
+test_write_after_free_post(void) {
+	assert_d_eq(mallctl("thread.tcache.flush", NULL, NULL, NULL, 0),
+	    0, "Unexpected tcache flush failure");
+	expect_true(fake_abort_called, "Use-after-free check didn't fire.");
+	safety_check_set_abort(NULL);
+}
+
+static bool
+uaf_detection_enabled(void) {
+	if (!config_uaf_detection || !san_uaf_detection_enabled()) {
+		return false;
+	}
+
+	ssize_t lg_san_uaf_align;
+	size_t sz = sizeof(lg_san_uaf_align);
+	assert_d_eq(mallctl("opt.lg_san_uaf_align", &lg_san_uaf_align, &sz,
+	    NULL, 0), 0, "Unexpected mallctl failure");
+	if (lg_san_uaf_align < 0) {
+		return false;
+	}
+	assert_zd_ge(lg_san_uaf_align, LG_PAGE, "san_uaf_align out of range");
+	san_uaf_align = (size_t)1 << lg_san_uaf_align;
+
+	bool tcache_enabled;
+	sz = sizeof(tcache_enabled);
+	assert_d_eq(mallctl("thread.tcache.enabled", &tcache_enabled, &sz, NULL,
+	    0), 0, "Unexpected mallctl failure");
+	if (!tcache_enabled) {
+		return false;
+	}
+
+	return true;
+}
+
+static size_t
+read_tcache_stashed_bytes(unsigned arena_ind) {
+	if (!config_stats) {
+		return 0;
+	}
+
+	uint64_t epoch;
+	assert_d_eq(mallctl("epoch", NULL, NULL, (void *)&epoch, sizeof(epoch)),
+	    0, "Unexpected mallctl() failure");
+
+	size_t tcache_stashed_bytes;
+	size_t sz = sizeof(tcache_stashed_bytes);
+	assert_d_eq(mallctl(
+	    "stats.arenas." STRINGIFY(MALLCTL_ARENAS_ALL)
+	    ".tcache_stashed_bytes", &tcache_stashed_bytes, &sz, NULL, 0), 0,
+	    "Unexpected mallctl failure");
+
+	return tcache_stashed_bytes;
+}
+
+static void
+test_use_after_free(size_t alloc_size, bool write_after_free) {
+	void *ptr = (void *)(uintptr_t)san_uaf_align;
+	assert_true(cache_bin_nonfast_aligned(ptr), "Wrong alignment");
+	ptr = (void *)((uintptr_t)123 * (uintptr_t)san_uaf_align);
+	assert_true(cache_bin_nonfast_aligned(ptr), "Wrong alignment");
+	ptr = (void *)((uintptr_t)san_uaf_align + 1);
+	assert_false(cache_bin_nonfast_aligned(ptr), "Wrong alignment");
+
+	/*
+	 * Disable purging (-1) so that all dirty pages remain committed, to
+	 * make use-after-free tolerable.
+	 */
+	unsigned arena_ind = do_arena_create(-1, -1);
+	int flags = MALLOCX_ARENA(arena_ind) | MALLOCX_TCACHE_NONE;
+
+	size_t n_max = san_uaf_align * 2;
+	void **items = mallocx(n_max * sizeof(void *), flags);
+	assert_ptr_not_null(items, "Unexpected mallocx failure");
+
+	bool found = false;
+	size_t iter = 0;
+	char magic = 's';
+	assert_d_eq(mallctl("thread.tcache.flush", NULL, NULL, NULL, 0),
+	    0, "Unexpected tcache flush failure");
+	while (!found) {
+		ptr = mallocx(alloc_size, flags);
+		assert_ptr_not_null(ptr, "Unexpected mallocx failure");
+
+		found = cache_bin_nonfast_aligned(ptr);
+		*(char *)ptr = magic;
+		items[iter] = ptr;
+		assert_zu_lt(iter++, n_max, "No aligned ptr found");
+	}
+
+	if (write_after_free) {
+		test_write_after_free_pre();
+	}
+	bool junked = false;
+	while (iter-- != 0) {
+		char *volatile mem = items[iter];
+		assert_c_eq(*mem, magic, "Unexpected memory content");
+		size_t stashed_before = read_tcache_stashed_bytes(arena_ind);
+		free(mem);
+		if (*mem != magic) {
+			junked = true;
+			assert_c_eq(*mem, (char)uaf_detect_junk,
+			    "Unexpected junk-filling bytes");
+			if (write_after_free) {
+				*(char *)mem = magic + 1;
+			}
+
+			size_t stashed_after = read_tcache_stashed_bytes(
+			    arena_ind);
+			/*
+			 * An edge case is the deallocation above triggering the
+			 * tcache GC event, in which case the stashed pointers
+			 * may get flushed immediately, before returning from
+			 * free().  Treat these cases as checked already.
+			 */
+			if (stashed_after <= stashed_before) {
+				fake_abort_called = true;
+			}
+		}
+		/* Flush tcache (including stashed). */
+		assert_d_eq(mallctl("thread.tcache.flush", NULL, NULL, NULL, 0),
+		    0, "Unexpected tcache flush failure");
+	}
+	expect_true(junked, "Aligned ptr not junked");
+	if (write_after_free) {
+		test_write_after_free_post();
+	}
+
+	dallocx(items, flags);
+	do_arena_destroy(arena_ind);
+}
+
+TEST_BEGIN(test_read_after_free) {
+	test_skip_if(!uaf_detection_enabled());
+
+	test_use_after_free(sizeof(void *), /* write_after_free */ false);
+	test_use_after_free(sizeof(void *) + 1, /* write_after_free */ false);
+	test_use_after_free(16, /* write_after_free */ false);
+	test_use_after_free(20, /* write_after_free */ false);
+	test_use_after_free(32, /* write_after_free */ false);
+	test_use_after_free(33, /* write_after_free */ false);
+	test_use_after_free(48, /* write_after_free */ false);
+	test_use_after_free(64, /* write_after_free */ false);
+	test_use_after_free(65, /* write_after_free */ false);
+	test_use_after_free(129, /* write_after_free */ false);
+	test_use_after_free(255, /* write_after_free */ false);
+	test_use_after_free(256, /* write_after_free */ false);
+}
+TEST_END
+
+TEST_BEGIN(test_write_after_free) {
+	test_skip_if(!uaf_detection_enabled());
+
+	test_use_after_free(sizeof(void *), /* write_after_free */ true);
+	test_use_after_free(sizeof(void *) + 1, /* write_after_free */ true);
+	test_use_after_free(16, /* write_after_free */ true);
+	test_use_after_free(20, /* write_after_free */ true);
+	test_use_after_free(32, /* write_after_free */ true);
+	test_use_after_free(33, /* write_after_free */ true);
+	test_use_after_free(48, /* write_after_free */ true);
+	test_use_after_free(64, /* write_after_free */ true);
+	test_use_after_free(65, /* write_after_free */ true);
+	test_use_after_free(129, /* write_after_free */ true);
+	test_use_after_free(255, /* write_after_free */ true);
+	test_use_after_free(256, /* write_after_free */ true);
+}
+TEST_END
+
+static bool
+check_allocated_intact(void **allocated, size_t n_alloc) {
+	for (unsigned i = 0; i < n_alloc; i++) {
+		void *ptr = *(void **)allocated[i];
+		bool found = false;
+		for (unsigned j = 0; j < n_alloc; j++) {
+			if (ptr == allocated[j]) {
+				found = true;
+				break;
+			}
+		}
+		if (!found) {
+			return false;
+		}
+	}
+
+	return true;
+}
+
+TEST_BEGIN(test_use_after_free_integration) {
+	test_skip_if(!uaf_detection_enabled());
+
+	unsigned arena_ind = do_arena_create(-1, -1);
+	int flags = MALLOCX_ARENA(arena_ind);
+
+	size_t n_alloc = san_uaf_align * 2;
+	void **allocated = mallocx(n_alloc * sizeof(void *), flags);
+	assert_ptr_not_null(allocated, "Unexpected mallocx failure");
+
+	for (unsigned i = 0; i < n_alloc; i++) {
+		allocated[i] = mallocx(sizeof(void *) * 8, flags);
+		assert_ptr_not_null(allocated[i], "Unexpected mallocx failure");
+		if (i > 0) {
+			/* Emulate a circular list. */
+			*(void **)allocated[i] = allocated[i - 1];
+		}
+	}
+	*(void **)allocated[0] = allocated[n_alloc - 1];
+	expect_true(check_allocated_intact(allocated, n_alloc),
+	    "Allocated data corrupted");
+
+	for (unsigned i = 0; i < n_alloc; i++) {
+		free(allocated[i]);
+	}
+	/* Read-after-free */
+	expect_false(check_allocated_intact(allocated, n_alloc),
+	    "Junk-filling not detected");
+
+	test_write_after_free_pre();
+	for (unsigned i = 0; i < n_alloc; i++) {
+		allocated[i] = mallocx(sizeof(void *), flags);
+		assert_ptr_not_null(allocated[i], "Unexpected mallocx failure");
+		*(void **)allocated[i] = (void *)(uintptr_t)i;
+	}
+	/* Write-after-free */
+	for (unsigned i = 0; i < n_alloc; i++) {
+		free(allocated[i]);
+		*(void **)allocated[i] = NULL;
+	}
+	test_write_after_free_post();
+}
+TEST_END
+
+int
+main(void) {
+	return test(
+	    test_read_after_free,
+	    test_write_after_free,
+	    test_use_after_free_integration);
+}
diff --git a/deps/jemalloc/test/unit/witness.c b/deps/jemalloc/test/unit/witness.c
new file mode 100644
index 0000000..5a6c448
--- /dev/null
+++ b/deps/jemalloc/test/unit/witness.c
@@ -0,0 +1,280 @@
+#include "test/jemalloc_test.h"
+
+static witness_lock_error_t *witness_lock_error_orig;
+static witness_owner_error_t *witness_owner_error_orig;
+static witness_not_owner_error_t *witness_not_owner_error_orig;
+static witness_depth_error_t *witness_depth_error_orig;
+
+static bool saw_lock_error;
+static bool saw_owner_error;
+static bool saw_not_owner_error;
+static bool saw_depth_error;
+
+static void
+witness_lock_error_intercept(const witness_list_t *witnesses,
+    const witness_t *witness) {
+	saw_lock_error = true;
+}
+
+static void
+witness_owner_error_intercept(const witness_t *witness) {
+	saw_owner_error = true;
+}
+
+static void
+witness_not_owner_error_intercept(const witness_t *witness) {
+	saw_not_owner_error = true;
+}
+
+static void
+witness_depth_error_intercept(const witness_list_t *witnesses,
+    witness_rank_t rank_inclusive, unsigned depth) {
+	saw_depth_error = true;
+}
+
+static int
+witness_comp(const witness_t *a, void *oa, const witness_t *b, void *ob) {
+	expect_u_eq(a->rank, b->rank, "Witnesses should have equal rank");
+
+	assert(oa == (void *)a);
+	assert(ob == (void *)b);
+
+	return strcmp(a->name, b->name);
+}
+
+static int
+witness_comp_reverse(const witness_t *a, void *oa, const witness_t *b,
+    void *ob) {
+	expect_u_eq(a->rank, b->rank, "Witnesses should have equal rank");
+
+	assert(oa == (void *)a);
+	assert(ob == (void *)b);
+
+	return -strcmp(a->name, b->name);
+}
+
+TEST_BEGIN(test_witness) {
+	witness_t a, b;
+	witness_tsdn_t witness_tsdn = { WITNESS_TSD_INITIALIZER };
+
+	test_skip_if(!config_debug);
+
+	witness_assert_lockless(&witness_tsdn);
+	witness_assert_depth(&witness_tsdn, 0);
+	witness_assert_depth_to_rank(&witness_tsdn, (witness_rank_t)1U, 0);
+
+	witness_init(&a, "a", 1, NULL, NULL);
+	witness_assert_not_owner(&witness_tsdn, &a);
+	witness_lock(&witness_tsdn, &a);
+	witness_assert_owner(&witness_tsdn, &a);
+	witness_assert_depth(&witness_tsdn, 1);
+	witness_assert_depth_to_rank(&witness_tsdn, (witness_rank_t)1U, 1);
+	witness_assert_depth_to_rank(&witness_tsdn, (witness_rank_t)2U, 0);
+
+	witness_init(&b, "b", 2, NULL, NULL);
+	witness_assert_not_owner(&witness_tsdn, &b);
+	witness_lock(&witness_tsdn, &b);
+	witness_assert_owner(&witness_tsdn, &b);
+	witness_assert_depth(&witness_tsdn, 2);
+	witness_assert_depth_to_rank(&witness_tsdn, (witness_rank_t)1U, 2);
+	witness_assert_depth_to_rank(&witness_tsdn, (witness_rank_t)2U, 1);
+	witness_assert_depth_to_rank(&witness_tsdn, (witness_rank_t)3U, 0);
+
+	witness_unlock(&witness_tsdn, &a);
+	witness_assert_depth(&witness_tsdn, 1);
+	witness_assert_depth_to_rank(&witness_tsdn, (witness_rank_t)1U, 1);
+	witness_assert_depth_to_rank(&witness_tsdn, (witness_rank_t)2U, 1);
+	witness_assert_depth_to_rank(&witness_tsdn, (witness_rank_t)3U, 0);
+	witness_unlock(&witness_tsdn, &b);
+
+	witness_assert_lockless(&witness_tsdn);
+	witness_assert_depth(&witness_tsdn, 0);
+	witness_assert_depth_to_rank(&witness_tsdn, (witness_rank_t)1U, 0);
+}
+TEST_END
+
+TEST_BEGIN(test_witness_comp) {
+	witness_t a, b, c, d;
+	witness_tsdn_t witness_tsdn = { WITNESS_TSD_INITIALIZER };
+
+	test_skip_if(!config_debug);
+
+	witness_assert_lockless(&witness_tsdn);
+
+	witness_init(&a, "a", 1, witness_comp, &a);
+	witness_assert_not_owner(&witness_tsdn, &a);
+	witness_lock(&witness_tsdn, &a);
+	witness_assert_owner(&witness_tsdn, &a);
+	witness_assert_depth(&witness_tsdn, 1);
+
+	witness_init(&b, "b", 1, witness_comp, &b);
+	witness_assert_not_owner(&witness_tsdn, &b);
+	witness_lock(&witness_tsdn, &b);
+	witness_assert_owner(&witness_tsdn, &b);
+	witness_assert_depth(&witness_tsdn, 2);
+	witness_unlock(&witness_tsdn, &b);
+	witness_assert_depth(&witness_tsdn, 1);
+
+	witness_lock_error_orig = witness_lock_error;
+	witness_lock_error = witness_lock_error_intercept;
+	saw_lock_error = false;
+
+	witness_init(&c, "c", 1, witness_comp_reverse, &c);
+	witness_assert_not_owner(&witness_tsdn, &c);
+	expect_false(saw_lock_error, "Unexpected witness lock error");
+	witness_lock(&witness_tsdn, &c);
+	expect_true(saw_lock_error, "Expected witness lock error");
+	witness_unlock(&witness_tsdn, &c);
+	witness_assert_depth(&witness_tsdn, 1);
+
+	saw_lock_error = false;
+
+	witness_init(&d, "d", 1, NULL, NULL);
+	witness_assert_not_owner(&witness_tsdn, &d);
+	expect_false(saw_lock_error, "Unexpected witness lock error");
+	witness_lock(&witness_tsdn, &d);
+	expect_true(saw_lock_error, "Expected witness lock error");
+	witness_unlock(&witness_tsdn, &d);
+	witness_assert_depth(&witness_tsdn, 1);
+
+	witness_unlock(&witness_tsdn, &a);
+
+	witness_assert_lockless(&witness_tsdn);
+
+	witness_lock_error = witness_lock_error_orig;
+}
+TEST_END
+
+TEST_BEGIN(test_witness_reversal) {
+	witness_t a, b;
+	witness_tsdn_t witness_tsdn = { WITNESS_TSD_INITIALIZER };
+
+	test_skip_if(!config_debug);
+
+	witness_lock_error_orig = witness_lock_error;
+	witness_lock_error = witness_lock_error_intercept;
+	saw_lock_error = false;
+
+	witness_assert_lockless(&witness_tsdn);
+
+	witness_init(&a, "a", 1, NULL, NULL);
+	witness_init(&b, "b", 2, NULL, NULL);
+
+	witness_lock(&witness_tsdn, &b);
+	witness_assert_depth(&witness_tsdn, 1);
+	expect_false(saw_lock_error, "Unexpected witness lock error");
+	witness_lock(&witness_tsdn, &a);
+	expect_true(saw_lock_error, "Expected witness lock error");
+
+	witness_unlock(&witness_tsdn, &a);
+	witness_assert_depth(&witness_tsdn, 1);
+	witness_unlock(&witness_tsdn, &b);
+
+	witness_assert_lockless(&witness_tsdn);
+
+	witness_lock_error = witness_lock_error_orig;
+}
+TEST_END
+
+TEST_BEGIN(test_witness_recursive) {
+	witness_t a;
+	witness_tsdn_t witness_tsdn = { WITNESS_TSD_INITIALIZER };
+
+	test_skip_if(!config_debug);
+
+	witness_not_owner_error_orig = witness_not_owner_error;
+	witness_not_owner_error = witness_not_owner_error_intercept;
+	saw_not_owner_error = false;
+
+	witness_lock_error_orig = witness_lock_error;
+	witness_lock_error = witness_lock_error_intercept;
+	saw_lock_error = false;
+
+	witness_assert_lockless(&witness_tsdn);
+
+	witness_init(&a, "a", 1, NULL, NULL);
+
+	witness_lock(&witness_tsdn, &a);
+	expect_false(saw_lock_error, "Unexpected witness lock error");
+	expect_false(saw_not_owner_error, "Unexpected witness not owner error");
+	witness_lock(&witness_tsdn, &a);
+	expect_true(saw_lock_error, "Expected witness lock error");
+	expect_true(saw_not_owner_error, "Expected witness not owner error");
+
+	witness_unlock(&witness_tsdn, &a);
+
+	witness_assert_lockless(&witness_tsdn);
+
+	witness_owner_error = witness_owner_error_orig;
+	witness_lock_error = witness_lock_error_orig;
+
+}
+TEST_END
+
+TEST_BEGIN(test_witness_unlock_not_owned) {
+	witness_t a;
+	witness_tsdn_t witness_tsdn = { WITNESS_TSD_INITIALIZER };
+
+	test_skip_if(!config_debug);
+
+	witness_owner_error_orig = witness_owner_error;
+	witness_owner_error = witness_owner_error_intercept;
+	saw_owner_error = false;
+
+	witness_assert_lockless(&witness_tsdn);
+
+	witness_init(&a, "a", 1, NULL, NULL);
+
+	expect_false(saw_owner_error, "Unexpected owner error");
+	witness_unlock(&witness_tsdn, &a);
+	expect_true(saw_owner_error, "Expected owner error");
+
+	witness_assert_lockless(&witness_tsdn);
+
+	witness_owner_error = witness_owner_error_orig;
+}
+TEST_END
+
+TEST_BEGIN(test_witness_depth) {
+	witness_t a;
+	witness_tsdn_t witness_tsdn = { WITNESS_TSD_INITIALIZER };
+
+	test_skip_if(!config_debug);
+
+	witness_depth_error_orig = witness_depth_error;
+	witness_depth_error = witness_depth_error_intercept;
+	saw_depth_error = false;
+
+	witness_assert_lockless(&witness_tsdn);
+	witness_assert_depth(&witness_tsdn, 0);
+
+	witness_init(&a, "a", 1, NULL, NULL);
+
+	expect_false(saw_depth_error, "Unexpected depth error");
+	witness_assert_lockless(&witness_tsdn);
+	witness_assert_depth(&witness_tsdn, 0);
+
+	witness_lock(&witness_tsdn, &a);
+	witness_assert_lockless(&witness_tsdn);
+	witness_assert_depth(&witness_tsdn, 0);
+	expect_true(saw_depth_error, "Expected depth error");
+
+	witness_unlock(&witness_tsdn, &a);
+
+	witness_assert_lockless(&witness_tsdn);
+	witness_assert_depth(&witness_tsdn, 0);
+
+	witness_depth_error = witness_depth_error_orig;
+}
+TEST_END
+
+int
+main(void) {
+	return test(
+	    test_witness,
+	    test_witness_comp,
+	    test_witness_reversal,
+	    test_witness_recursive,
+	    test_witness_unlock_not_owned,
+	    test_witness_depth);
+}
diff --git a/deps/jemalloc/test/unit/zero.c b/deps/jemalloc/test/unit/zero.c
new file mode 100644
index 0000000..d3e81f1
--- /dev/null
+++ b/deps/jemalloc/test/unit/zero.c
@@ -0,0 +1,59 @@
+#include "test/jemalloc_test.h"
+
+static void
+test_zero(size_t sz_min, size_t sz_max) {
+	uint8_t *s;
+	size_t sz_prev, sz, i;
+#define MAGIC	((uint8_t)0x61)
+
+	sz_prev = 0;
+	s = (uint8_t *)mallocx(sz_min, 0);
+	expect_ptr_not_null((void *)s, "Unexpected mallocx() failure");
+
+	for (sz = sallocx(s, 0); sz <= sz_max;
+	    sz_prev = sz, sz = sallocx(s, 0)) {
+		if (sz_prev > 0) {
+			expect_u_eq(s[0], MAGIC,
+			    "Previously allocated byte %zu/%zu is corrupted",
+			    ZU(0), sz_prev);
+			expect_u_eq(s[sz_prev-1], MAGIC,
+			    "Previously allocated byte %zu/%zu is corrupted",
+			    sz_prev-1, sz_prev);
+		}
+
+		for (i = sz_prev; i < sz; i++) {
+			expect_u_eq(s[i], 0x0,
+			    "Newly allocated byte %zu/%zu isn't zero-filled",
+			    i, sz);
+			s[i] = MAGIC;
+		}
+
+		if (xallocx(s, sz+1, 0, 0) == sz) {
+			s = (uint8_t *)rallocx(s, sz+1, 0);
+			expect_ptr_not_null((void *)s,
+			    "Unexpected rallocx() failure");
+		}
+	}
+
+	dallocx(s, 0);
+#undef MAGIC
+}
+
+TEST_BEGIN(test_zero_small) {
+	test_skip_if(!config_fill);
+	test_zero(1, SC_SMALL_MAXCLASS - 1);
+}
+TEST_END
+
+TEST_BEGIN(test_zero_large) {
+	test_skip_if(!config_fill);
+	test_zero(SC_SMALL_MAXCLASS + 1, 1U << (SC_LG_LARGE_MINCLASS + 1));
+}
+TEST_END
+
+int
+main(void) {
+	return test(
+	    test_zero_small,
+	    test_zero_large);
+}
diff --git a/deps/jemalloc/test/unit/zero.sh b/deps/jemalloc/test/unit/zero.sh
new file mode 100644
index 0000000..b4540b2
--- /dev/null
+++ b/deps/jemalloc/test/unit/zero.sh
@@ -0,0 +1,5 @@
+#!/bin/sh
+
+if [ "x${enable_fill}" = "x1" ] ; then
+  export MALLOC_CONF="abort:false,junk:false,zero:true"
+fi
diff --git a/deps/jemalloc/test/unit/zero_realloc_abort.c b/deps/jemalloc/test/unit/zero_realloc_abort.c
new file mode 100644
index 0000000..a880d10
--- /dev/null
+++ b/deps/jemalloc/test/unit/zero_realloc_abort.c
@@ -0,0 +1,26 @@
+#include "test/jemalloc_test.h"
+
+#include <signal.h>
+
+static bool abort_called = false;
+
+void set_abort_called() {
+	abort_called = true;
+};
+
+TEST_BEGIN(test_realloc_abort) {
+	abort_called = false;
+	safety_check_set_abort(&set_abort_called);
+	void *ptr = mallocx(42, 0);
+	expect_ptr_not_null(ptr, "Unexpected mallocx error");
+	ptr = realloc(ptr, 0);
+	expect_true(abort_called, "Realloc with zero size didn't abort");
+}
+TEST_END
+
+int
+main(void) {
+	return test(
+	    test_realloc_abort);
+}
+
diff --git a/deps/jemalloc/test/unit/zero_realloc_abort.sh b/deps/jemalloc/test/unit/zero_realloc_abort.sh
new file mode 100644
index 0000000..37daeea
--- /dev/null
+++ b/deps/jemalloc/test/unit/zero_realloc_abort.sh
@@ -0,0 +1,3 @@
+#!/bin/sh
+
+export MALLOC_CONF="zero_realloc:abort"
diff --git a/deps/jemalloc/test/unit/zero_realloc_alloc.c b/deps/jemalloc/test/unit/zero_realloc_alloc.c
new file mode 100644
index 0000000..65e07bd
--- /dev/null
+++ b/deps/jemalloc/test/unit/zero_realloc_alloc.c
@@ -0,0 +1,48 @@
+#include "test/jemalloc_test.h"
+
+static uint64_t
+allocated() {
+	if (!config_stats) {
+		return 0;
+	}
+	uint64_t allocated;
+	size_t sz = sizeof(allocated);
+	expect_d_eq(mallctl("thread.allocated", (void *)&allocated, &sz, NULL,
+	    0), 0, "Unexpected mallctl failure");
+	return allocated;
+}
+
+static uint64_t
+deallocated() {
+	if (!config_stats) {
+		return 0;
+	}
+	uint64_t deallocated;
+	size_t sz = sizeof(deallocated);
+	expect_d_eq(mallctl("thread.deallocated", (void *)&deallocated, &sz,
+	    NULL, 0), 0, "Unexpected mallctl failure");
+	return deallocated;
+}
+
+TEST_BEGIN(test_realloc_alloc) {
+	void *ptr = mallocx(1, 0);
+	expect_ptr_not_null(ptr, "Unexpected mallocx error");
+	uint64_t allocated_before = allocated();
+	uint64_t deallocated_before = deallocated();
+	ptr = realloc(ptr, 0);
+	uint64_t allocated_after = allocated();
+	uint64_t deallocated_after = deallocated();
+	if (config_stats) {
+		expect_u64_lt(allocated_before, allocated_after,
+		    "Unexpected stats change");
+		expect_u64_lt(deallocated_before, deallocated_after,
+		    "Unexpected stats change");
+	}
+	dallocx(ptr, 0);
+}
+TEST_END
+int
+main(void) {
+	return test(
+	    test_realloc_alloc);
+}
diff --git a/deps/jemalloc/test/unit/zero_realloc_alloc.sh b/deps/jemalloc/test/unit/zero_realloc_alloc.sh
new file mode 100644
index 0000000..802687c
--- /dev/null
+++ b/deps/jemalloc/test/unit/zero_realloc_alloc.sh
@@ -0,0 +1,3 @@
+#!/bin/sh
+
+export MALLOC_CONF="zero_realloc:alloc"
diff --git a/deps/jemalloc/test/unit/zero_realloc_free.c b/deps/jemalloc/test/unit/zero_realloc_free.c
new file mode 100644
index 0000000..baed86c
--- /dev/null
+++ b/deps/jemalloc/test/unit/zero_realloc_free.c
@@ -0,0 +1,33 @@
+#include "test/jemalloc_test.h"
+
+static uint64_t
+deallocated() {
+	if (!config_stats) {
+		return 0;
+	}
+	uint64_t deallocated;
+	size_t sz = sizeof(deallocated);
+	expect_d_eq(mallctl("thread.deallocated", (void *)&deallocated, &sz,
+	    NULL, 0), 0, "Unexpected mallctl failure");
+	return deallocated;
+}
+
+TEST_BEGIN(test_realloc_free) {
+	void *ptr = mallocx(42, 0);
+	expect_ptr_not_null(ptr, "Unexpected mallocx error");
+	uint64_t deallocated_before = deallocated();
+	ptr = realloc(ptr, 0);
+	uint64_t deallocated_after = deallocated();
+	expect_ptr_null(ptr, "Realloc didn't free");
+	if (config_stats) {
+		expect_u64_gt(deallocated_after, deallocated_before,
+		    "Realloc didn't free");
+	}
+}
+TEST_END
+
+int
+main(void) {
+	return test(
+	    test_realloc_free);
+}
diff --git a/deps/jemalloc/test/unit/zero_realloc_free.sh b/deps/jemalloc/test/unit/zero_realloc_free.sh
new file mode 100644
index 0000000..51b01c9
--- /dev/null
+++ b/deps/jemalloc/test/unit/zero_realloc_free.sh
@@ -0,0 +1,3 @@
+#!/bin/sh
+
+export MALLOC_CONF="zero_realloc:free"
diff --git a/deps/jemalloc/test/unit/zero_reallocs.c b/deps/jemalloc/test/unit/zero_reallocs.c
new file mode 100644
index 0000000..66c7a40
--- /dev/null
+++ b/deps/jemalloc/test/unit/zero_reallocs.c
@@ -0,0 +1,40 @@
+#include "test/jemalloc_test.h"
+
+static size_t
+zero_reallocs() {
+	if (!config_stats) {
+		return 0;
+	}
+	size_t count = 12345;
+	size_t sz = sizeof(count);
+
+	expect_d_eq(mallctl("stats.zero_reallocs", (void *)&count, &sz,
+	    NULL, 0), 0, "Unexpected mallctl failure");
+	return count;
+}
+
+TEST_BEGIN(test_zero_reallocs) {
+	test_skip_if(!config_stats);
+
+	for (size_t i = 0; i < 100; ++i) {
+		void *ptr = mallocx(i * i + 1, 0);
+		expect_ptr_not_null(ptr, "Unexpected mallocx error");
+		size_t count = zero_reallocs();
+		expect_zu_eq(i, count, "Incorrect zero realloc count");
+		ptr = realloc(ptr, 0);
+		expect_ptr_null(ptr, "Realloc didn't free");
+		count = zero_reallocs();
+		expect_zu_eq(i + 1, count, "Realloc didn't adjust count");
+	}
+}
+TEST_END
+
+int
+main(void) {
+	/*
+	 * We expect explicit counts; reentrant tests run multiple times, so
+	 * counts leak across runs.
+	 */
+	return test_no_reentrancy(
+	    test_zero_reallocs);
+}
diff --git a/deps/jemalloc/test/unit/zero_reallocs.sh b/deps/jemalloc/test/unit/zero_reallocs.sh
new file mode 100644
index 0000000..51b01c9
--- /dev/null
+++ b/deps/jemalloc/test/unit/zero_reallocs.sh
@@ -0,0 +1,3 @@
+#!/bin/sh
+
+export MALLOC_CONF="zero_realloc:free"