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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-19 01:47:29 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-19 01:47:29 +0000
commit0ebf5bdf043a27fd3dfb7f92e0cb63d88954c44d (patch)
treea31f07c9bcca9d56ce61e9a1ffd30ef350d513aa /tools/profiler
parentInitial commit. (diff)
downloadfirefox-esr-0ebf5bdf043a27fd3dfb7f92e0cb63d88954c44d.tar.xz
firefox-esr-0ebf5bdf043a27fd3dfb7f92e0cb63d88954c44d.zip
Adding upstream version 115.8.0esr.upstream/115.8.0esr
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'tools/profiler')
-rw-r--r--tools/profiler/core/EHABIStackWalk.cpp597
-rw-r--r--tools/profiler/core/EHABIStackWalk.h28
-rw-r--r--tools/profiler/core/MicroGeckoProfiler.cpp203
-rw-r--r--tools/profiler/core/PageInformation.cpp44
-rw-r--r--tools/profiler/core/PageInformation.h68
-rw-r--r--tools/profiler/core/PlatformMacros.h130
-rw-r--r--tools/profiler/core/PowerCounters-linux.cpp287
-rw-r--r--tools/profiler/core/PowerCounters-mac-amd64.cpp419
-rw-r--r--tools/profiler/core/PowerCounters-mac-arm64.cpp47
-rw-r--r--tools/profiler/core/PowerCounters-win.cpp342
-rw-r--r--tools/profiler/core/PowerCounters.h52
-rw-r--r--tools/profiler/core/ProfileAdditionalInformation.cpp102
-rw-r--r--tools/profiler/core/ProfileBuffer.cpp243
-rw-r--r--tools/profiler/core/ProfileBuffer.h260
-rw-r--r--tools/profiler/core/ProfileBufferEntry.cpp2321
-rw-r--r--tools/profiler/core/ProfileBufferEntry.h532
-rw-r--r--tools/profiler/core/ProfiledThreadData.cpp455
-rw-r--r--tools/profiler/core/ProfiledThreadData.h250
-rw-r--r--tools/profiler/core/ProfilerBacktrace.cpp101
-rw-r--r--tools/profiler/core/ProfilerBacktrace.h184
-rw-r--r--tools/profiler/core/ProfilerBindings.cpp386
-rw-r--r--tools/profiler/core/ProfilerCodeAddressService.cpp75
-rw-r--r--tools/profiler/core/ProfilerMarkers.cpp32
-rw-r--r--tools/profiler/core/ProfilerThreadRegistration.cpp198
-rw-r--r--tools/profiler/core/ProfilerThreadRegistrationData.cpp303
-rw-r--r--tools/profiler/core/ProfilerThreadRegistry.cpp40
-rw-r--r--tools/profiler/core/ProfilerUtils.cpp118
-rw-r--r--tools/profiler/core/VTuneProfiler.cpp80
-rw-r--r--tools/profiler/core/VTuneProfiler.h78
-rw-r--r--tools/profiler/core/memory_hooks.cpp632
-rw-r--r--tools/profiler/core/memory_hooks.h25
-rw-r--r--tools/profiler/core/platform-linux-android.cpp636
-rw-r--r--tools/profiler/core/platform-macos.cpp297
-rw-r--r--tools/profiler/core/platform-win32.cpp496
-rw-r--r--tools/profiler/core/platform.cpp7067
-rw-r--r--tools/profiler/core/platform.h381
-rw-r--r--tools/profiler/core/shared-libraries-linux.cc280
-rw-r--r--tools/profiler/core/shared-libraries-macos.cc211
-rw-r--r--tools/profiler/core/shared-libraries-win32.cc167
-rw-r--r--tools/profiler/core/vtune/ittnotify.h4123
-rw-r--r--tools/profiler/docs/buffer.rst70
-rw-r--r--tools/profiler/docs/code-overview.rst1494
-rw-r--r--tools/profiler/docs/fissionprofiler-20200424.pngbin0 -> 131301 bytes
-rw-r--r--tools/profiler/docs/fissionprofiler.umlet.uxf546
-rw-r--r--tools/profiler/docs/index.rst37
-rw-r--r--tools/profiler/docs/instrumenting-javascript.rst60
-rw-r--r--tools/profiler/docs/instrumenting-rust.rst433
-rw-r--r--tools/profiler/docs/markers-guide.rst485
-rw-r--r--tools/profiler/docs/memory.rst46
-rw-r--r--tools/profiler/docs/profilerclasses-20220913.pngbin0 -> 727313 bytes
-rw-r--r--tools/profiler/docs/profilerclasses.umlet.uxf811
-rw-r--r--tools/profiler/docs/profilerthreadregistration-20220913.pngbin0 -> 383738 bytes
-rw-r--r--tools/profiler/docs/profilerthreadregistration.umlet.uxf710
-rw-r--r--tools/profiler/gecko/ChildProfilerController.cpp170
-rw-r--r--tools/profiler/gecko/PProfiler.ipdl44
-rw-r--r--tools/profiler/gecko/ProfilerChild.cpp565
-rw-r--r--tools/profiler/gecko/ProfilerIOInterposeObserver.cpp216
-rw-r--r--tools/profiler/gecko/ProfilerIOInterposeObserver.h32
-rw-r--r--tools/profiler/gecko/ProfilerParent.cpp1002
-rw-r--r--tools/profiler/gecko/ProfilerTypes.ipdlh43
-rw-r--r--tools/profiler/gecko/components.conf17
-rw-r--r--tools/profiler/gecko/nsIProfiler.idl208
-rw-r--r--tools/profiler/gecko/nsProfiler.cpp1487
-rw-r--r--tools/profiler/gecko/nsProfiler.h117
-rw-r--r--tools/profiler/gecko/nsProfilerCIID.h16
-rw-r--r--tools/profiler/gecko/nsProfilerStartParams.cpp65
-rw-r--r--tools/profiler/gecko/nsProfilerStartParams.h36
-rw-r--r--tools/profiler/lul/AutoObjectMapper.cpp79
-rw-r--r--tools/profiler/lul/AutoObjectMapper.h64
-rw-r--r--tools/profiler/lul/LulCommon.cpp100
-rw-r--r--tools/profiler/lul/LulCommonExt.h509
-rw-r--r--tools/profiler/lul/LulDwarf.cpp2538
-rw-r--r--tools/profiler/lul/LulDwarfExt.h1312
-rw-r--r--tools/profiler/lul/LulDwarfInt.h193
-rw-r--r--tools/profiler/lul/LulDwarfSummariser.cpp549
-rw-r--r--tools/profiler/lul/LulDwarfSummariser.h64
-rw-r--r--tools/profiler/lul/LulElf.cpp887
-rw-r--r--tools/profiler/lul/LulElfExt.h69
-rw-r--r--tools/profiler/lul/LulElfInt.h218
-rw-r--r--tools/profiler/lul/LulMain.cpp2079
-rw-r--r--tools/profiler/lul/LulMain.h378
-rw-r--r--tools/profiler/lul/LulMainInt.h631
-rw-r--r--tools/profiler/lul/platform-linux-lul.cpp75
-rw-r--r--tools/profiler/lul/platform-linux-lul.h19
-rw-r--r--tools/profiler/moz.build227
-rw-r--r--tools/profiler/public/ChildProfilerController.h71
-rw-r--r--tools/profiler/public/GeckoProfiler.h435
-rw-r--r--tools/profiler/public/GeckoProfilerReporter.h26
-rw-r--r--tools/profiler/public/GeckoTraceEvent.h1060
-rw-r--r--tools/profiler/public/MicroGeckoProfiler.h130
-rw-r--r--tools/profiler/public/ProfileAdditionalInformation.h90
-rw-r--r--tools/profiler/public/ProfileBufferEntrySerializationGeckoExtensions.h160
-rw-r--r--tools/profiler/public/ProfileJSONWriter.h19
-rw-r--r--tools/profiler/public/ProfilerBindings.h162
-rw-r--r--tools/profiler/public/ProfilerChild.h106
-rw-r--r--tools/profiler/public/ProfilerCodeAddressService.h52
-rw-r--r--tools/profiler/public/ProfilerControl.h190
-rw-r--r--tools/profiler/public/ProfilerCounts.h296
-rw-r--r--tools/profiler/public/ProfilerLabels.h268
-rw-r--r--tools/profiler/public/ProfilerMarkerTypes.h41
-rw-r--r--tools/profiler/public/ProfilerMarkers.h355
-rw-r--r--tools/profiler/public/ProfilerMarkersDetail.h31
-rw-r--r--tools/profiler/public/ProfilerMarkersPrerequisites.h31
-rw-r--r--tools/profiler/public/ProfilerParent.h119
-rw-r--r--tools/profiler/public/ProfilerRunnable.h68
-rw-r--r--tools/profiler/public/ProfilerRustBindings.h12
-rw-r--r--tools/profiler/public/ProfilerState.h399
-rw-r--r--tools/profiler/public/ProfilerThreadPlatformData.h80
-rw-r--r--tools/profiler/public/ProfilerThreadRegistration.h367
-rw-r--r--tools/profiler/public/ProfilerThreadRegistrationData.h537
-rw-r--r--tools/profiler/public/ProfilerThreadRegistrationInfo.h64
-rw-r--r--tools/profiler/public/ProfilerThreadRegistry.h321
-rw-r--r--tools/profiler/public/ProfilerThreadSleep.h58
-rw-r--r--tools/profiler/public/ProfilerThreadState.h128
-rw-r--r--tools/profiler/public/ProfilerUtils.h32
-rw-r--r--tools/profiler/public/shared-libraries.h213
-rw-r--r--tools/profiler/rust-api/Cargo.toml23
-rw-r--r--tools/profiler/rust-api/README.md5
-rw-r--r--tools/profiler/rust-api/build.rs118
-rw-r--r--tools/profiler/rust-api/cbindgen.toml15
-rw-r--r--tools/profiler/rust-api/extra-bindgen-flags.in1
-rw-r--r--tools/profiler/rust-api/macros/Cargo.toml13
-rw-r--r--tools/profiler/rust-api/macros/src/lib.rs65
-rw-r--r--tools/profiler/rust-api/src/gecko_bindings/glue.rs53
-rw-r--r--tools/profiler/rust-api/src/gecko_bindings/mod.rs21
-rw-r--r--tools/profiler/rust-api/src/gecko_bindings/profiling_categories.rs32
-rw-r--r--tools/profiler/rust-api/src/json_writer.rs86
-rw-r--r--tools/profiler/rust-api/src/label.rs137
-rw-r--r--tools/profiler/rust-api/src/lib.rs29
-rw-r--r--tools/profiler/rust-api/src/marker/deserializer_tags_state.rs116
-rw-r--r--tools/profiler/rust-api/src/marker/mod.rs284
-rw-r--r--tools/profiler/rust-api/src/marker/options.rs138
-rw-r--r--tools/profiler/rust-api/src/marker/schema.rs233
-rw-r--r--tools/profiler/rust-api/src/profiler_state.rs78
-rw-r--r--tools/profiler/rust-api/src/thread.rs23
-rw-r--r--tools/profiler/rust-api/src/time.rs71
-rw-r--r--tools/profiler/rust-helper/Cargo.toml23
-rw-r--r--tools/profiler/rust-helper/src/compact_symbol_table.rs40
-rw-r--r--tools/profiler/rust-helper/src/elf.rs101
-rw-r--r--tools/profiler/rust-helper/src/lib.rs107
-rw-r--r--tools/profiler/tests/browser/browser.ini102
-rw-r--r--tools/profiler/tests/browser/browser_test_feature_ipcmessages.js100
-rw-r--r--tools/profiler/tests/browser/browser_test_feature_jsallocations.js74
-rw-r--r--tools/profiler/tests/browser/browser_test_feature_nostacksampling.js72
-rw-r--r--tools/profiler/tests/browser/browser_test_marker_network_cancel.js71
-rw-r--r--tools/profiler/tests/browser/browser_test_marker_network_private_browsing.js91
-rw-r--r--tools/profiler/tests/browser/browser_test_marker_network_redirect.js341
-rw-r--r--tools/profiler/tests/browser/browser_test_marker_network_serviceworker_cache_first.js378
-rw-r--r--tools/profiler/tests/browser/browser_test_marker_network_serviceworker_no_fetch_handler.js218
-rw-r--r--tools/profiler/tests/browser/browser_test_marker_network_serviceworker_no_respondWith_in_fetch_handler.js294
-rw-r--r--tools/profiler/tests/browser/browser_test_marker_network_serviceworker_synthetized_response.js480
-rw-r--r--tools/profiler/tests/browser/browser_test_marker_network_simple.js81
-rw-r--r--tools/profiler/tests/browser/browser_test_marker_network_sts.js130
-rw-r--r--tools/profiler/tests/browser/browser_test_markers_gc_cc.js49
-rw-r--r--tools/profiler/tests/browser/browser_test_markers_parent_process.js37
-rw-r--r--tools/profiler/tests/browser/browser_test_markers_preferencereads.js73
-rw-r--r--tools/profiler/tests/browser/browser_test_profile_capture_by_pid.js199
-rw-r--r--tools/profiler/tests/browser/browser_test_profile_fission.js191
-rw-r--r--tools/profiler/tests/browser/browser_test_profile_multi_frame_page_info.js83
-rw-r--r--tools/profiler/tests/browser/browser_test_profile_single_frame_page_info.js132
-rw-r--r--tools/profiler/tests/browser/browser_test_profile_slow_capture.js104
-rw-r--r--tools/profiler/tests/browser/do_work_500ms.html41
-rw-r--r--tools/profiler/tests/browser/firefox-logo-nightly.svg1
-rw-r--r--tools/profiler/tests/browser/head.js159
-rw-r--r--tools/profiler/tests/browser/multi_frame.html11
-rw-r--r--tools/profiler/tests/browser/page_with_resources.html11
-rw-r--r--tools/profiler/tests/browser/redirect.sjs8
-rw-r--r--tools/profiler/tests/browser/serviceworkers/firefox-logo-nightly.svg1
-rw-r--r--tools/profiler/tests/browser/serviceworkers/serviceworker-utils.js39
-rw-r--r--tools/profiler/tests/browser/serviceworkers/serviceworker_cache_first.js34
-rw-r--r--tools/profiler/tests/browser/serviceworkers/serviceworker_no_fetch_handler.js4
-rw-r--r--tools/profiler/tests/browser/serviceworkers/serviceworker_no_respondWith_in_fetch_handler.js9
-rw-r--r--tools/profiler/tests/browser/serviceworkers/serviceworker_page.html10
-rw-r--r--tools/profiler/tests/browser/serviceworkers/serviceworker_register.html9
-rw-r--r--tools/profiler/tests/browser/serviceworkers/serviceworker_simple.html9
-rw-r--r--tools/profiler/tests/browser/serviceworkers/serviceworker_synthetized_response.js27
-rw-r--r--tools/profiler/tests/browser/simple.html9
-rw-r--r--tools/profiler/tests/browser/single_frame.html10
-rw-r--r--tools/profiler/tests/chrome/chrome.ini8
-rw-r--r--tools/profiler/tests/chrome/profiler_test_utils.js66
-rw-r--r--tools/profiler/tests/chrome/test_profile_worker.html66
-rw-r--r--tools/profiler/tests/chrome/test_profile_worker_bug_1428076.html58
-rw-r--r--tools/profiler/tests/gtest/GeckoProfiler.cpp5099
-rw-r--r--tools/profiler/tests/gtest/LulTest.cpp51
-rw-r--r--tools/profiler/tests/gtest/LulTestDwarf.cpp2733
-rw-r--r--tools/profiler/tests/gtest/LulTestInfrastructure.cpp498
-rw-r--r--tools/profiler/tests/gtest/LulTestInfrastructure.h736
-rw-r--r--tools/profiler/tests/gtest/ThreadProfileTest.cpp60
-rw-r--r--tools/profiler/tests/gtest/moz.build45
-rw-r--r--tools/profiler/tests/shared-head.js591
-rw-r--r--tools/profiler/tests/xpcshell/head.js244
-rw-r--r--tools/profiler/tests/xpcshell/test_active_configuration.js115
-rw-r--r--tools/profiler/tests/xpcshell/test_addProfilerMarker.js221
-rw-r--r--tools/profiler/tests/xpcshell/test_asm.js76
-rw-r--r--tools/profiler/tests/xpcshell/test_assertion_helper.js162
-rw-r--r--tools/profiler/tests/xpcshell/test_enterjit_osr.js52
-rw-r--r--tools/profiler/tests/xpcshell/test_enterjit_osr_disabling.js14
-rw-r--r--tools/profiler/tests/xpcshell/test_enterjit_osr_enabling.js14
-rw-r--r--tools/profiler/tests/xpcshell/test_feature_fileioall.js159
-rw-r--r--tools/profiler/tests/xpcshell/test_feature_java.js31
-rw-r--r--tools/profiler/tests/xpcshell/test_feature_js.js63
-rw-r--r--tools/profiler/tests/xpcshell/test_feature_mainthreadio.js122
-rw-r--r--tools/profiler/tests/xpcshell/test_feature_nativeallocations.js158
-rw-r--r--tools/profiler/tests/xpcshell/test_feature_stackwalking.js48
-rw-r--r--tools/profiler/tests/xpcshell/test_get_features.js8
-rw-r--r--tools/profiler/tests/xpcshell/test_merged_stacks.js74
-rw-r--r--tools/profiler/tests/xpcshell/test_pause.js126
-rw-r--r--tools/profiler/tests/xpcshell/test_responsiveness.js50
-rw-r--r--tools/profiler/tests/xpcshell/test_run.js37
-rw-r--r--tools/profiler/tests/xpcshell/test_shared_library.js21
-rw-r--r--tools/profiler/tests/xpcshell/test_start.js21
-rw-r--r--tools/profiler/tests/xpcshell/xpcshell.ini72
212 files changed, 64315 insertions, 0 deletions
diff --git a/tools/profiler/core/EHABIStackWalk.cpp b/tools/profiler/core/EHABIStackWalk.cpp
new file mode 100644
index 0000000000..e3099b89ec
--- /dev/null
+++ b/tools/profiler/core/EHABIStackWalk.cpp
@@ -0,0 +1,597 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+/*
+ * This is an implementation of stack unwinding according to a subset
+ * of the ARM Exception Handling ABI, as described in:
+ * http://infocenter.arm.com/help/topic/com.arm.doc.ihi0038a/IHI0038A_ehabi.pdf
+ *
+ * This handles only the ARM-defined "personality routines" (chapter
+ * 9), and don't track the value of FP registers, because profiling
+ * needs only chain of PC/SP values.
+ *
+ * Because the exception handling info may not be accurate for all
+ * possible places where an async signal could occur (e.g., in a
+ * prologue or epilogue), this bounds-checks all stack accesses.
+ *
+ * This file uses "struct" for structures in the exception tables and
+ * "class" otherwise. We should avoid violating the C++11
+ * standard-layout rules in the former.
+ */
+
+#include "EHABIStackWalk.h"
+
+#include "shared-libraries.h"
+#include "platform.h"
+
+#include "mozilla/Atomics.h"
+#include "mozilla/Attributes.h"
+#include "mozilla/DebugOnly.h"
+#include "mozilla/EndianUtils.h"
+
+#include <algorithm>
+#include <elf.h>
+#include <stdint.h>
+#include <vector>
+#include <string>
+
+#ifndef PT_ARM_EXIDX
+# define PT_ARM_EXIDX 0x70000001
+#endif
+
+namespace mozilla {
+
+struct PRel31 {
+ uint32_t mBits;
+ bool topBit() const { return mBits & 0x80000000; }
+ uint32_t value() const { return mBits & 0x7fffffff; }
+ int32_t offset() const { return (static_cast<int32_t>(mBits) << 1) >> 1; }
+ const void* compute() const {
+ return reinterpret_cast<const char*>(this) + offset();
+ }
+
+ private:
+ PRel31(const PRel31& copied) = delete;
+ PRel31() = delete;
+};
+
+struct EHEntry {
+ PRel31 startPC;
+ PRel31 exidx;
+
+ private:
+ EHEntry(const EHEntry& copied) = delete;
+ EHEntry() = delete;
+};
+
+class EHState {
+ // Note that any core register can be used as a "frame pointer" to
+ // influence the unwinding process, so this must track all of them.
+ uint32_t mRegs[16];
+
+ public:
+ bool unwind(const EHEntry* aEntry, const void* stackBase);
+ uint32_t& operator[](int i) { return mRegs[i]; }
+ const uint32_t& operator[](int i) const { return mRegs[i]; }
+ explicit EHState(const mcontext_t&);
+};
+
+enum { R_SP = 13, R_LR = 14, R_PC = 15 };
+
+class EHTable {
+ uint32_t mStartPC;
+ uint32_t mEndPC;
+ uint32_t mBaseAddress;
+ const EHEntry* mEntriesBegin;
+ const EHEntry* mEntriesEnd;
+ std::string mName;
+
+ public:
+ EHTable(const void* aELF, size_t aSize, const std::string& aName);
+ const EHEntry* lookup(uint32_t aPC) const;
+ bool isValid() const { return mEntriesEnd != mEntriesBegin; }
+ const std::string& name() const { return mName; }
+ uint32_t startPC() const { return mStartPC; }
+ uint32_t endPC() const { return mEndPC; }
+ uint32_t baseAddress() const { return mBaseAddress; }
+};
+
+class EHAddrSpace {
+ std::vector<uint32_t> mStarts;
+ std::vector<EHTable> mTables;
+ static mozilla::Atomic<const EHAddrSpace*> sCurrent;
+
+ public:
+ explicit EHAddrSpace(const std::vector<EHTable>& aTables);
+ const EHTable* lookup(uint32_t aPC) const;
+ static void Update();
+ static const EHAddrSpace* Get();
+};
+
+void EHABIStackWalkInit() { EHAddrSpace::Update(); }
+
+size_t EHABIStackWalk(const mcontext_t& aContext, void* stackBase, void** aSPs,
+ void** aPCs, const size_t aNumFrames) {
+ const EHAddrSpace* space = EHAddrSpace::Get();
+ EHState state(aContext);
+ size_t count = 0;
+
+ while (count < aNumFrames) {
+ uint32_t pc = state[R_PC], sp = state[R_SP];
+
+ // ARM instructions are always aligned to 2 or 4 bytes.
+ // The last bit of the pc / lr indicates ARM or Thumb mode.
+ // We're only interested in the instruction address, so we mask off that
+ // bit.
+ constexpr uint32_t instrAddrMask = ~1;
+ uint32_t instrAddress = pc & instrAddrMask;
+
+ aPCs[count] = reinterpret_cast<void*>(instrAddress);
+ aSPs[count] = reinterpret_cast<void*>(sp);
+ count++;
+
+ if (!space) break;
+ // TODO: cache these lookups. Binary-searching libxul is
+ // expensive (possibly more expensive than doing the actual
+ // unwind), and even a small cache should help.
+ const EHTable* table = space->lookup(pc);
+ if (!table) break;
+ const EHEntry* entry = table->lookup(pc);
+ if (!entry) break;
+ if (!state.unwind(entry, stackBase)) break;
+ }
+
+ return count;
+}
+
+class EHInterp {
+ public:
+ // Note that stackLimit is exclusive and stackBase is inclusive
+ // (i.e, stackLimit < SP <= stackBase), following the convention
+ // set by the AAPCS spec.
+ EHInterp(EHState& aState, const EHEntry* aEntry, uint32_t aStackLimit,
+ uint32_t aStackBase)
+ : mState(aState),
+ mStackLimit(aStackLimit),
+ mStackBase(aStackBase),
+ mNextWord(0),
+ mWordsLeft(0),
+ mFailed(false) {
+ const PRel31& exidx = aEntry->exidx;
+ uint32_t firstWord;
+
+ if (exidx.mBits == 1) { // EXIDX_CANTUNWIND
+ mFailed = true;
+ return;
+ }
+ if (exidx.topBit()) {
+ firstWord = exidx.mBits;
+ } else {
+ mNextWord = reinterpret_cast<const uint32_t*>(exidx.compute());
+ firstWord = *mNextWord++;
+ }
+
+ switch (firstWord >> 24) {
+ case 0x80: // short
+ mWord = firstWord << 8;
+ mBytesLeft = 3;
+ break;
+ case 0x81:
+ case 0x82: // long; catch descriptor size ignored
+ mWord = firstWord << 16;
+ mBytesLeft = 2;
+ mWordsLeft = (firstWord >> 16) & 0xff;
+ break;
+ default:
+ // unknown personality
+ mFailed = true;
+ }
+ }
+
+ bool unwind();
+
+ private:
+ // TODO: GCC has been observed not CSEing repeated reads of
+ // mState[R_SP] with writes to mFailed between them, suggesting that
+ // it hasn't determined that they can't alias and is thus missing
+ // optimization opportunities. So, we may want to flatten EHState
+ // into this class; this may also make the code simpler.
+ EHState& mState;
+ uint32_t mStackLimit;
+ uint32_t mStackBase;
+ const uint32_t* mNextWord;
+ uint32_t mWord;
+ uint8_t mWordsLeft;
+ uint8_t mBytesLeft;
+ bool mFailed;
+
+ enum {
+ I_ADDSP = 0x00, // 0sxxxxxx (subtract if s)
+ M_ADDSP = 0x80,
+ I_POPMASK = 0x80, // 1000iiii iiiiiiii (if any i set)
+ M_POPMASK = 0xf0,
+ I_MOVSP = 0x90, // 1001nnnn
+ M_MOVSP = 0xf0,
+ I_POPN = 0xa0, // 1010lnnn
+ M_POPN = 0xf0,
+ I_FINISH = 0xb0, // 10110000
+ I_POPLO = 0xb1, // 10110001 0000iiii (if any i set)
+ I_ADDSPBIG = 0xb2, // 10110010 uleb128
+ I_POPFDX = 0xb3, // 10110011 sssscccc
+ I_POPFDX8 = 0xb8, // 10111nnn
+ M_POPFDX8 = 0xf8,
+ // "Intel Wireless MMX" extensions omitted.
+ I_POPFDD = 0xc8, // 1100100h sssscccc
+ M_POPFDD = 0xfe,
+ I_POPFDD8 = 0xd0, // 11010nnn
+ M_POPFDD8 = 0xf8
+ };
+
+ uint8_t next() {
+ if (mBytesLeft == 0) {
+ if (mWordsLeft == 0) {
+ return I_FINISH;
+ }
+ mWordsLeft--;
+ mWord = *mNextWord++;
+ mBytesLeft = 4;
+ }
+ mBytesLeft--;
+ mWord = (mWord << 8) | (mWord >> 24); // rotate
+ return mWord;
+ }
+
+ uint32_t& vSP() { return mState[R_SP]; }
+ uint32_t* ptrSP() { return reinterpret_cast<uint32_t*>(vSP()); }
+
+ void checkStackBase() {
+ if (vSP() > mStackBase) mFailed = true;
+ }
+ void checkStackLimit() {
+ if (vSP() <= mStackLimit) mFailed = true;
+ }
+ void checkStackAlign() {
+ if ((vSP() & 3) != 0) mFailed = true;
+ }
+ void checkStack() {
+ checkStackBase();
+ checkStackLimit();
+ checkStackAlign();
+ }
+
+ void popRange(uint8_t first, uint8_t last, uint16_t mask) {
+ bool hasSP = false;
+ uint32_t tmpSP;
+ if (mask == 0) mFailed = true;
+ for (uint8_t r = first; r <= last; ++r) {
+ if (mask & 1) {
+ if (r == R_SP) {
+ hasSP = true;
+ tmpSP = *ptrSP();
+ } else
+ mState[r] = *ptrSP();
+ vSP() += 4;
+ checkStackBase();
+ if (mFailed) return;
+ }
+ mask >>= 1;
+ }
+ if (hasSP) {
+ vSP() = tmpSP;
+ checkStack();
+ }
+ }
+};
+
+bool EHState::unwind(const EHEntry* aEntry, const void* stackBasePtr) {
+ // The unwinding program cannot set SP to less than the initial value.
+ uint32_t stackLimit = mRegs[R_SP] - 4;
+ uint32_t stackBase = reinterpret_cast<uint32_t>(stackBasePtr);
+ EHInterp interp(*this, aEntry, stackLimit, stackBase);
+ return interp.unwind();
+}
+
+bool EHInterp::unwind() {
+ mState[R_PC] = 0;
+ checkStack();
+ while (!mFailed) {
+ uint8_t insn = next();
+#if DEBUG_EHABI_UNWIND
+ LOG("unwind insn = %02x", (unsigned)insn);
+#endif
+ // Try to put the common cases first.
+
+ // 00xxxxxx: vsp = vsp + (xxxxxx << 2) + 4
+ // 01xxxxxx: vsp = vsp - (xxxxxx << 2) - 4
+ if ((insn & M_ADDSP) == I_ADDSP) {
+ uint32_t offset = ((insn & 0x3f) << 2) + 4;
+ if (insn & 0x40) {
+ vSP() -= offset;
+ checkStackLimit();
+ } else {
+ vSP() += offset;
+ checkStackBase();
+ }
+ continue;
+ }
+
+ // 10100nnn: Pop r4-r[4+nnn]
+ // 10101nnn: Pop r4-r[4+nnn], r14
+ if ((insn & M_POPN) == I_POPN) {
+ uint8_t n = (insn & 0x07) + 1;
+ bool lr = insn & 0x08;
+ uint32_t* ptr = ptrSP();
+ vSP() += (n + (lr ? 1 : 0)) * 4;
+ checkStackBase();
+ for (uint8_t r = 4; r < 4 + n; ++r) mState[r] = *ptr++;
+ if (lr) mState[R_LR] = *ptr++;
+ continue;
+ }
+
+ // 1011000: Finish
+ if (insn == I_FINISH) {
+ if (mState[R_PC] == 0) {
+ mState[R_PC] = mState[R_LR];
+ // Non-standard change (bug 916106): Prevent the caller from
+ // re-using LR. Since the caller is by definition not a leaf
+ // routine, it will have to restore LR from somewhere to
+ // return to its own caller, so we can safely zero it here.
+ // This makes a difference only if an error in unwinding
+ // (e.g., caused by starting from within a prologue/epilogue)
+ // causes us to load a pointer to a leaf routine as LR; if we
+ // don't do something, we'll go into an infinite loop of
+ // "returning" to that same function.
+ mState[R_LR] = 0;
+ }
+ return true;
+ }
+
+ // 1001nnnn: Set vsp = r[nnnn]
+ if ((insn & M_MOVSP) == I_MOVSP) {
+ vSP() = mState[insn & 0x0f];
+ checkStack();
+ continue;
+ }
+
+ // 11001000 sssscccc: Pop VFP regs D[16+ssss]-D[16+ssss+cccc] (as FLDMFDD)
+ // 11001001 sssscccc: Pop VFP regs D[ssss]-D[ssss+cccc] (as FLDMFDD)
+ if ((insn & M_POPFDD) == I_POPFDD) {
+ uint8_t n = (next() & 0x0f) + 1;
+ // Note: if the 16+ssss+cccc > 31, the encoding is reserved.
+ // As the space is currently unused, we don't try to check.
+ vSP() += 8 * n;
+ checkStackBase();
+ continue;
+ }
+
+ // 11010nnn: Pop VFP regs D[8]-D[8+nnn] (as FLDMFDD)
+ if ((insn & M_POPFDD8) == I_POPFDD8) {
+ uint8_t n = (insn & 0x07) + 1;
+ vSP() += 8 * n;
+ checkStackBase();
+ continue;
+ }
+
+ // 10110010 uleb128: vsp = vsp + 0x204 + (uleb128 << 2)
+ if (insn == I_ADDSPBIG) {
+ uint32_t acc = 0;
+ uint8_t shift = 0;
+ uint8_t byte;
+ do {
+ if (shift >= 32) return false;
+ byte = next();
+ acc |= (byte & 0x7f) << shift;
+ shift += 7;
+ } while (byte & 0x80);
+ uint32_t offset = 0x204 + (acc << 2);
+ // The calculations above could have overflowed.
+ // But the one we care about is this:
+ if (vSP() + offset < vSP()) mFailed = true;
+ vSP() += offset;
+ // ...so that this is the only other check needed:
+ checkStackBase();
+ continue;
+ }
+
+ // 1000iiii iiiiiiii (i not all 0): Pop under masks {r15-r12}, {r11-r4}
+ if ((insn & M_POPMASK) == I_POPMASK) {
+ popRange(4, 15, ((insn & 0x0f) << 8) | next());
+ continue;
+ }
+
+ // 1011001 0000iiii (i not all 0): Pop under mask {r3-r0}
+ if (insn == I_POPLO) {
+ popRange(0, 3, next() & 0x0f);
+ continue;
+ }
+
+ // 10110011 sssscccc: Pop VFP regs D[ssss]-D[ssss+cccc] (as FLDMFDX)
+ if (insn == I_POPFDX) {
+ uint8_t n = (next() & 0x0f) + 1;
+ vSP() += 8 * n + 4;
+ checkStackBase();
+ continue;
+ }
+
+ // 10111nnn: Pop VFP regs D[8]-D[8+nnn] (as FLDMFDX)
+ if ((insn & M_POPFDX8) == I_POPFDX8) {
+ uint8_t n = (insn & 0x07) + 1;
+ vSP() += 8 * n + 4;
+ checkStackBase();
+ continue;
+ }
+
+ // unhandled instruction
+#ifdef DEBUG_EHABI_UNWIND
+ LOG("Unhandled EHABI instruction 0x%02x", insn);
+#endif
+ mFailed = true;
+ }
+ return false;
+}
+
+bool operator<(const EHTable& lhs, const EHTable& rhs) {
+ return lhs.startPC() < rhs.startPC();
+}
+
+// Async signal unsafe.
+EHAddrSpace::EHAddrSpace(const std::vector<EHTable>& aTables)
+ : mTables(aTables) {
+ std::sort(mTables.begin(), mTables.end());
+ DebugOnly<uint32_t> lastEnd = 0;
+ for (std::vector<EHTable>::iterator i = mTables.begin(); i != mTables.end();
+ ++i) {
+ MOZ_ASSERT(i->startPC() >= lastEnd);
+ mStarts.push_back(i->startPC());
+ lastEnd = i->endPC();
+ }
+}
+
+const EHTable* EHAddrSpace::lookup(uint32_t aPC) const {
+ ptrdiff_t i = (std::upper_bound(mStarts.begin(), mStarts.end(), aPC) -
+ mStarts.begin()) -
+ 1;
+
+ if (i < 0 || aPC >= mTables[i].endPC()) return 0;
+ return &mTables[i];
+}
+
+const EHEntry* EHTable::lookup(uint32_t aPC) const {
+ MOZ_ASSERT(aPC >= mStartPC);
+ if (aPC >= mEndPC) return nullptr;
+
+ const EHEntry* begin = mEntriesBegin;
+ const EHEntry* end = mEntriesEnd;
+ MOZ_ASSERT(begin < end);
+ if (aPC < reinterpret_cast<uint32_t>(begin->startPC.compute()))
+ return nullptr;
+
+ while (end - begin > 1) {
+#ifdef EHABI_UNWIND_MORE_ASSERTS
+ if ((end - 1)->startPC.compute() < begin->startPC.compute()) {
+ MOZ_CRASH("unsorted exidx");
+ }
+#endif
+ const EHEntry* mid = begin + (end - begin) / 2;
+ if (aPC < reinterpret_cast<uint32_t>(mid->startPC.compute()))
+ end = mid;
+ else
+ begin = mid;
+ }
+ return begin;
+}
+
+#if MOZ_LITTLE_ENDIAN()
+static const unsigned char hostEndian = ELFDATA2LSB;
+#elif MOZ_BIG_ENDIAN()
+static const unsigned char hostEndian = ELFDATA2MSB;
+#else
+# error "No endian?"
+#endif
+
+// Async signal unsafe: std::vector::reserve, std::string copy ctor.
+EHTable::EHTable(const void* aELF, size_t aSize, const std::string& aName)
+ : mStartPC(~0), // largest uint32_t
+ mEndPC(0),
+ mEntriesBegin(nullptr),
+ mEntriesEnd(nullptr),
+ mName(aName) {
+ const uint32_t fileHeaderAddr = reinterpret_cast<uint32_t>(aELF);
+
+ if (aSize < sizeof(Elf32_Ehdr)) return;
+
+ const Elf32_Ehdr& file = *(reinterpret_cast<Elf32_Ehdr*>(fileHeaderAddr));
+ if (memcmp(&file.e_ident[EI_MAG0], ELFMAG, SELFMAG) != 0 ||
+ file.e_ident[EI_CLASS] != ELFCLASS32 ||
+ file.e_ident[EI_DATA] != hostEndian ||
+ file.e_ident[EI_VERSION] != EV_CURRENT || file.e_machine != EM_ARM ||
+ file.e_version != EV_CURRENT)
+ // e_flags?
+ return;
+
+ MOZ_ASSERT(file.e_phoff + file.e_phnum * file.e_phentsize <= aSize);
+ const Elf32_Phdr *exidxHdr = 0, *zeroHdr = 0;
+ for (unsigned i = 0; i < file.e_phnum; ++i) {
+ const Elf32_Phdr& phdr = *(reinterpret_cast<Elf32_Phdr*>(
+ fileHeaderAddr + file.e_phoff + i * file.e_phentsize));
+ if (phdr.p_type == PT_ARM_EXIDX) {
+ exidxHdr = &phdr;
+ } else if (phdr.p_type == PT_LOAD) {
+ if (phdr.p_offset == 0) {
+ zeroHdr = &phdr;
+ }
+ if (phdr.p_flags & PF_X) {
+ mStartPC = std::min(mStartPC, phdr.p_vaddr);
+ mEndPC = std::max(mEndPC, phdr.p_vaddr + phdr.p_memsz);
+ }
+ }
+ }
+ if (!exidxHdr) return;
+ if (!zeroHdr) return;
+ mBaseAddress = fileHeaderAddr - zeroHdr->p_vaddr;
+ mStartPC += mBaseAddress;
+ mEndPC += mBaseAddress;
+ mEntriesBegin =
+ reinterpret_cast<const EHEntry*>(mBaseAddress + exidxHdr->p_vaddr);
+ mEntriesEnd = reinterpret_cast<const EHEntry*>(
+ mBaseAddress + exidxHdr->p_vaddr + exidxHdr->p_memsz);
+}
+
+mozilla::Atomic<const EHAddrSpace*> EHAddrSpace::sCurrent(nullptr);
+
+// Async signal safe; can fail if Update() hasn't returned yet.
+const EHAddrSpace* EHAddrSpace::Get() { return sCurrent; }
+
+// Collect unwinding information from loaded objects. Calls after the
+// first have no effect. Async signal unsafe.
+void EHAddrSpace::Update() {
+ const EHAddrSpace* space = sCurrent;
+ if (space) return;
+
+ SharedLibraryInfo info = SharedLibraryInfo::GetInfoForSelf();
+ std::vector<EHTable> tables;
+
+ for (size_t i = 0; i < info.GetSize(); ++i) {
+ const SharedLibrary& lib = info.GetEntry(i);
+ // FIXME: This isn't correct if the start address isn't p_offset 0, because
+ // the start address will not point at the file header. But this is worked
+ // around by magic number checks in the EHTable constructor.
+ EHTable tab(reinterpret_cast<const void*>(lib.GetStart()),
+ lib.GetEnd() - lib.GetStart(), lib.GetNativeDebugPath());
+ if (tab.isValid()) tables.push_back(tab);
+ }
+ space = new EHAddrSpace(tables);
+
+ if (!sCurrent.compareExchange(nullptr, space)) {
+ delete space;
+ space = sCurrent;
+ }
+}
+
+EHState::EHState(const mcontext_t& context) {
+#ifdef linux
+ mRegs[0] = context.arm_r0;
+ mRegs[1] = context.arm_r1;
+ mRegs[2] = context.arm_r2;
+ mRegs[3] = context.arm_r3;
+ mRegs[4] = context.arm_r4;
+ mRegs[5] = context.arm_r5;
+ mRegs[6] = context.arm_r6;
+ mRegs[7] = context.arm_r7;
+ mRegs[8] = context.arm_r8;
+ mRegs[9] = context.arm_r9;
+ mRegs[10] = context.arm_r10;
+ mRegs[11] = context.arm_fp;
+ mRegs[12] = context.arm_ip;
+ mRegs[13] = context.arm_sp;
+ mRegs[14] = context.arm_lr;
+ mRegs[15] = context.arm_pc;
+#else
+# error "Unhandled OS for ARM EHABI unwinding"
+#endif
+}
+
+} // namespace mozilla
diff --git a/tools/profiler/core/EHABIStackWalk.h b/tools/profiler/core/EHABIStackWalk.h
new file mode 100644
index 0000000000..61286290b8
--- /dev/null
+++ b/tools/profiler/core/EHABIStackWalk.h
@@ -0,0 +1,28 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+/*
+ * This is an implementation of stack unwinding according to a subset
+ * of the ARM Exception Handling ABI; see the comment at the top of
+ * the .cpp file for details.
+ */
+
+#ifndef mozilla_EHABIStackWalk_h__
+#define mozilla_EHABIStackWalk_h__
+
+#include <stddef.h>
+#include <ucontext.h>
+
+namespace mozilla {
+
+void EHABIStackWalkInit();
+
+size_t EHABIStackWalk(const mcontext_t& aContext, void* stackBase, void** aSPs,
+ void** aPCs, size_t aNumFrames);
+
+} // namespace mozilla
+
+#endif
diff --git a/tools/profiler/core/MicroGeckoProfiler.cpp b/tools/profiler/core/MicroGeckoProfiler.cpp
new file mode 100644
index 0000000000..bedb755742
--- /dev/null
+++ b/tools/profiler/core/MicroGeckoProfiler.cpp
@@ -0,0 +1,203 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "GeckoProfiler.h"
+
+#include "mozilla/Maybe.h"
+#include "nsPrintfCString.h"
+#include "public/GeckoTraceEvent.h"
+
+using namespace mozilla;
+using webrtc::trace_event_internal::TraceValueUnion;
+
+void uprofiler_register_thread(const char* name, void* stacktop) {
+#ifdef MOZ_GECKO_PROFILER
+ profiler_register_thread(name, stacktop);
+#endif // MOZ_GECKO_PROFILER
+}
+
+void uprofiler_unregister_thread() {
+#ifdef MOZ_GECKO_PROFILER
+ profiler_unregister_thread();
+#endif // MOZ_GECKO_PROFILER
+}
+
+#ifdef MOZ_GECKO_PROFILER
+namespace {
+Maybe<MarkerTiming> ToTiming(char phase) {
+ switch (phase) {
+ case 'B':
+ return Some(MarkerTiming::IntervalStart());
+ case 'E':
+ return Some(MarkerTiming::IntervalEnd());
+ case 'I':
+ return Some(MarkerTiming::InstantNow());
+ default:
+ return Nothing();
+ }
+}
+
+struct TraceOption {
+ bool mPassed = false;
+ ProfilerString8View mName;
+ Variant<int64_t, bool, double, ProfilerString8View> mValue = AsVariant(false);
+};
+
+struct TraceMarker {
+ static constexpr int MAX_NUM_ARGS = 2;
+ using OptionsType = std::tuple<TraceOption, TraceOption>;
+ static constexpr mozilla::Span<const char> MarkerTypeName() {
+ return MakeStringSpan("TraceEvent");
+ }
+ static void StreamJSONMarkerData(
+ mozilla::baseprofiler::SpliceableJSONWriter& aWriter,
+ const OptionsType& aArgs) {
+ auto writeValue = [&](const auto& aName, const auto& aVariant) {
+ aVariant.match(
+ [&](const int64_t& aValue) { aWriter.IntProperty(aName, aValue); },
+ [&](const bool& aValue) { aWriter.BoolProperty(aName, aValue); },
+ [&](const double& aValue) { aWriter.DoubleProperty(aName, aValue); },
+ [&](const ProfilerString8View& aValue) {
+ aWriter.StringProperty(aName, aValue);
+ });
+ };
+ if (const auto& arg = std::get<0>(aArgs); arg.mPassed) {
+ aWriter.StringProperty("name1", arg.mName);
+ writeValue("val1", arg.mValue);
+ }
+ if (const auto& arg = std::get<1>(aArgs); arg.mPassed) {
+ aWriter.StringProperty("name2", arg.mName);
+ writeValue("val2", arg.mValue);
+ }
+ }
+ static mozilla::MarkerSchema MarkerTypeDisplay() {
+ using MS = MarkerSchema;
+ MS schema{MS::Location::MarkerChart, MS::Location::MarkerTable};
+ schema.SetChartLabel("{marker.name}");
+ schema.SetTableLabel(
+ "{marker.name} {marker.data.name1} {marker.data.val1} "
+ "{marker.data.name2} {marker.data.val2}");
+ schema.AddKeyLabelFormatSearchable("name1", "Key 1", MS::Format::String,
+ MS::Searchable::Searchable);
+ schema.AddKeyLabelFormatSearchable("val1", "Value 1", MS::Format::String,
+ MS::Searchable::Searchable);
+ schema.AddKeyLabelFormatSearchable("name2", "Key 2", MS::Format::String,
+ MS::Searchable::Searchable);
+ schema.AddKeyLabelFormatSearchable("val2", "Value 2", MS::Format::String,
+ MS::Searchable::Searchable);
+ return schema;
+ }
+};
+} // namespace
+
+namespace mozilla {
+template <>
+struct ProfileBufferEntryWriter::Serializer<TraceOption> {
+ static Length Bytes(const TraceOption& aOption) {
+ // 1 byte to store passed flag, then object size if passed.
+ return aOption.mPassed ? (1 + SumBytes(aOption.mName, aOption.mValue)) : 1;
+ }
+
+ static void Write(ProfileBufferEntryWriter& aEW, const TraceOption& aOption) {
+ // 'T'/'t' is just an arbitrary 1-byte value to distinguish states.
+ if (aOption.mPassed) {
+ aEW.WriteObject<char>('T');
+ // Use the Serializer for the name/value pair.
+ aEW.WriteObject(aOption.mName);
+ aEW.WriteObject(aOption.mValue);
+ } else {
+ aEW.WriteObject<char>('t');
+ }
+ }
+};
+
+template <>
+struct ProfileBufferEntryReader::Deserializer<TraceOption> {
+ static void ReadInto(ProfileBufferEntryReader& aER, TraceOption& aOption) {
+ char c = aER.ReadObject<char>();
+ if ((aOption.mPassed = (c == 'T'))) {
+ aER.ReadIntoObject(aOption.mName);
+ aER.ReadIntoObject(aOption.mValue);
+ } else {
+ MOZ_ASSERT(c == 't');
+ }
+ }
+
+ static TraceOption Read(ProfileBufferEntryReader& aER) {
+ TraceOption option;
+ ReadInto(aER, option);
+ return option;
+ }
+};
+} // namespace mozilla
+#endif // MOZ_GECKO_PROFILER
+
+void uprofiler_simple_event_marker(const char* name, char phase, int num_args,
+ const char** arg_names,
+ const unsigned char* arg_types,
+ const unsigned long long* arg_values) {
+#ifdef MOZ_GECKO_PROFILER
+ if (!profiler_thread_is_being_profiled_for_markers()) {
+ return;
+ }
+ Maybe<MarkerTiming> timing = ToTiming(phase);
+ if (!timing) {
+ if (getenv("MOZ_LOG_UNKNOWN_TRACE_EVENT_PHASES")) {
+ fprintf(stderr, "XXX UProfiler: phase not handled: '%c'\n", phase);
+ }
+ return;
+ }
+ MOZ_ASSERT(num_args <= TraceMarker::MAX_NUM_ARGS);
+ TraceMarker::OptionsType tuple;
+ TraceOption* args[2] = {&std::get<0>(tuple), &std::get<1>(tuple)};
+ for (int i = 0; i < std::min(num_args, TraceMarker::MAX_NUM_ARGS); ++i) {
+ auto& arg = *args[i];
+ arg.mPassed = true;
+ arg.mName = ProfilerString8View::WrapNullTerminatedString(arg_names[i]);
+ switch (arg_types[i]) {
+ case TRACE_VALUE_TYPE_UINT:
+ MOZ_ASSERT(arg_values[i] <= std::numeric_limits<int64_t>::max());
+ arg.mValue = AsVariant(static_cast<int64_t>(
+ reinterpret_cast<const TraceValueUnion*>(&arg_values[i])->as_uint));
+ break;
+ case TRACE_VALUE_TYPE_INT:
+ arg.mValue = AsVariant(static_cast<int64_t>(
+ reinterpret_cast<const TraceValueUnion*>(&arg_values[i])->as_int));
+ break;
+ case TRACE_VALUE_TYPE_BOOL:
+ arg.mValue = AsVariant(
+ reinterpret_cast<const TraceValueUnion*>(&arg_values[i])->as_bool);
+ break;
+ case TRACE_VALUE_TYPE_DOUBLE:
+ arg.mValue =
+ AsVariant(reinterpret_cast<const TraceValueUnion*>(&arg_values[i])
+ ->as_double);
+ break;
+ case TRACE_VALUE_TYPE_POINTER:
+ arg.mValue = AsVariant(ProfilerString8View(nsPrintfCString(
+ "%p", reinterpret_cast<const TraceValueUnion*>(&arg_values[i])
+ ->as_pointer)));
+ break;
+ case TRACE_VALUE_TYPE_STRING:
+ arg.mValue = AsVariant(ProfilerString8View::WrapNullTerminatedString(
+ reinterpret_cast<const TraceValueUnion*>(&arg_values[i])
+ ->as_string));
+ break;
+ case TRACE_VALUE_TYPE_COPY_STRING:
+ arg.mValue = AsVariant(ProfilerString8View(
+ nsCString(reinterpret_cast<const TraceValueUnion*>(&arg_values[i])
+ ->as_string)));
+ break;
+ default:
+ MOZ_ASSERT_UNREACHABLE("Unexpected trace value type");
+ arg.mValue = AsVariant(ProfilerString8View(
+ nsPrintfCString("Unexpected type: %u", arg_types[i])));
+ break;
+ }
+ }
+ profiler_add_marker(ProfilerString8View::WrapNullTerminatedString(name),
+ geckoprofiler::category::MEDIA_RT, {timing.extract()},
+ TraceMarker{}, tuple);
+#endif // MOZ_GECKO_PROFILER
+}
diff --git a/tools/profiler/core/PageInformation.cpp b/tools/profiler/core/PageInformation.cpp
new file mode 100644
index 0000000000..83d2d508a1
--- /dev/null
+++ b/tools/profiler/core/PageInformation.cpp
@@ -0,0 +1,44 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "PageInformation.h"
+
+#include "mozilla/ProfileJSONWriter.h"
+
+PageInformation::PageInformation(uint64_t aTabID, uint64_t aInnerWindowID,
+ const nsCString& aUrl,
+ uint64_t aEmbedderInnerWindowID,
+ bool aIsPrivateBrowsing)
+ : mTabID(aTabID),
+ mInnerWindowID(aInnerWindowID),
+ mUrl(aUrl),
+ mEmbedderInnerWindowID(aEmbedderInnerWindowID),
+ mIsPrivateBrowsing(aIsPrivateBrowsing) {}
+
+bool PageInformation::Equals(PageInformation* aOtherPageInfo) const {
+ // It's enough to check inner window IDs because they are unique for each
+ // page. Therefore, we don't have to check the tab ID or url.
+ return InnerWindowID() == aOtherPageInfo->InnerWindowID();
+}
+
+void PageInformation::StreamJSON(SpliceableJSONWriter& aWriter) const {
+ // Here, we are converting uint64_t to double. Both tab and Inner
+ // Window IDs are created using `nsContentUtils::GenerateProcessSpecificId`,
+ // which is specifically designed to only use 53 of the 64 bits to be lossless
+ // when passed into and out of JS as a double.
+ aWriter.StartObjectElement();
+ aWriter.DoubleProperty("tabID", TabID());
+ aWriter.DoubleProperty("innerWindowID", InnerWindowID());
+ aWriter.StringProperty("url", Url());
+ aWriter.DoubleProperty("embedderInnerWindowID", EmbedderInnerWindowID());
+ aWriter.BoolProperty("isPrivateBrowsing", IsPrivateBrowsing());
+ aWriter.EndObject();
+}
+
+size_t PageInformation::SizeOfIncludingThis(
+ mozilla::MallocSizeOf aMallocSizeOf) const {
+ return aMallocSizeOf(this);
+}
diff --git a/tools/profiler/core/PageInformation.h b/tools/profiler/core/PageInformation.h
new file mode 100644
index 0000000000..6c9039b9a4
--- /dev/null
+++ b/tools/profiler/core/PageInformation.h
@@ -0,0 +1,68 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef PageInformation_h
+#define PageInformation_h
+
+#include "mozilla/Maybe.h"
+#include "mozilla/MemoryReporting.h"
+#include "nsISupportsImpl.h"
+#include "nsString.h"
+
+namespace mozilla {
+namespace baseprofiler {
+class SpliceableJSONWriter;
+} // namespace baseprofiler
+} // namespace mozilla
+
+// This class contains information that's relevant to a single page only
+// while the page information is important and registered with the profiler,
+// but regardless of whether the profiler is running. All accesses to it are
+// protected by the profiler state lock.
+// When the page gets unregistered, we keep the profiler buffer position
+// to determine if we are still using this page. If not, we unregister
+// it in the next page registration.
+class PageInformation final {
+ public:
+ NS_INLINE_DECL_THREADSAFE_REFCOUNTING(PageInformation)
+ PageInformation(uint64_t aTabID, uint64_t aInnerWindowID,
+ const nsCString& aUrl, uint64_t aEmbedderInnerWindowID,
+ bool aIsPrivateBrowsing);
+
+ size_t SizeOfIncludingThis(mozilla::MallocSizeOf aMallocSizeOf) const;
+ bool Equals(PageInformation* aOtherPageInfo) const;
+ void StreamJSON(mozilla::baseprofiler::SpliceableJSONWriter& aWriter) const;
+
+ uint64_t InnerWindowID() const { return mInnerWindowID; }
+ uint64_t TabID() const { return mTabID; }
+ const nsCString& Url() const { return mUrl; }
+ uint64_t EmbedderInnerWindowID() const { return mEmbedderInnerWindowID; }
+ bool IsPrivateBrowsing() const { return mIsPrivateBrowsing; }
+
+ mozilla::Maybe<uint64_t> BufferPositionWhenUnregistered() const {
+ return mBufferPositionWhenUnregistered;
+ }
+
+ void NotifyUnregistered(uint64_t aBufferPosition) {
+ mBufferPositionWhenUnregistered = mozilla::Some(aBufferPosition);
+ }
+
+ private:
+ const uint64_t mTabID;
+ const uint64_t mInnerWindowID;
+ const nsCString mUrl;
+ const uint64_t mEmbedderInnerWindowID;
+ const bool mIsPrivateBrowsing;
+
+ // Holds the buffer position when page is unregistered.
+ // It's used to determine if we still use this page in the profiler or
+ // not.
+ mozilla::Maybe<uint64_t> mBufferPositionWhenUnregistered;
+
+ virtual ~PageInformation() = default;
+};
+
+#endif // PageInformation_h
diff --git a/tools/profiler/core/PlatformMacros.h b/tools/profiler/core/PlatformMacros.h
new file mode 100644
index 0000000000..c72e94c128
--- /dev/null
+++ b/tools/profiler/core/PlatformMacros.h
@@ -0,0 +1,130 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef PLATFORM_MACROS_H
+#define PLATFORM_MACROS_H
+
+// Define platform selection macros in a consistent way. Don't add anything
+// else to this file, so it can remain freestanding. The primary factorisation
+// is on (ARCH,OS) pairs ("PLATforms") but ARCH_ and OS_ macros are defined
+// too, since they are sometimes convenient.
+//
+// Note: "GP" is short for "Gecko Profiler".
+
+#undef GP_PLAT_x86_android
+#undef GP_PLAT_amd64_android
+#undef GP_PLAT_arm_android
+#undef GP_PLAT_arm64_android
+#undef GP_PLAT_x86_linux
+#undef GP_PLAT_amd64_linux
+#undef GP_PLAT_arm_linux
+#undef GP_PLAT_mips64_linux
+#undef GP_PLAT_amd64_darwin
+#undef GP_PLAT_arm64_darwin
+#undef GP_PLAT_x86_windows
+#undef GP_PLAT_amd64_windows
+#undef GP_PLAT_arm64_windows
+
+#undef GP_ARCH_x86
+#undef GP_ARCH_amd64
+#undef GP_ARCH_arm
+#undef GP_ARCH_arm64
+#undef GP_ARCH_mips64
+
+#undef GP_OS_android
+#undef GP_OS_linux
+#undef GP_OS_darwin
+#undef GP_OS_windows
+
+// We test __ANDROID__ before __linux__ because __linux__ is defined on both
+// Android and Linux, whereas GP_OS_android is not defined on vanilla Linux.
+
+#if defined(__ANDROID__) && defined(__i386__)
+# define GP_PLAT_x86_android 1
+# define GP_ARCH_x86 1
+# define GP_OS_android 1
+
+#elif defined(__ANDROID__) && defined(__x86_64__)
+# define GP_PLAT_amd64_android 1
+# define GP_ARCH_amd64 1
+# define GP_OS_android 1
+
+#elif defined(__ANDROID__) && defined(__arm__)
+# define GP_PLAT_arm_android 1
+# define GP_ARCH_arm 1
+# define GP_OS_android 1
+
+#elif defined(__ANDROID__) && defined(__aarch64__)
+# define GP_PLAT_arm64_android 1
+# define GP_ARCH_arm64 1
+# define GP_OS_android 1
+
+#elif defined(__linux__) && defined(__i386__)
+# define GP_PLAT_x86_linux 1
+# define GP_ARCH_x86 1
+# define GP_OS_linux 1
+
+#elif defined(__linux__) && defined(__x86_64__)
+# define GP_PLAT_amd64_linux 1
+# define GP_ARCH_amd64 1
+# define GP_OS_linux 1
+
+#elif defined(__linux__) && defined(__arm__)
+# define GP_PLAT_arm_linux 1
+# define GP_ARCH_arm 1
+# define GP_OS_linux 1
+
+#elif defined(__linux__) && defined(__aarch64__)
+# define GP_PLAT_arm64_linux 1
+# define GP_ARCH_arm64 1
+# define GP_OS_linux 1
+
+#elif defined(__linux__) && defined(__mips64)
+# define GP_PLAT_mips64_linux 1
+# define GP_ARCH_mips64 1
+# define GP_OS_linux 1
+
+#elif defined(__APPLE__) && defined(__aarch64__)
+# define GP_PLAT_arm64_darwin 1
+# define GP_ARCH_arm64 1
+# define GP_OS_darwin 1
+
+#elif defined(__APPLE__) && defined(__x86_64__)
+# define GP_PLAT_amd64_darwin 1
+# define GP_ARCH_amd64 1
+# define GP_OS_darwin 1
+
+#elif defined(__FreeBSD__) && defined(__x86_64__)
+# define GP_PLAT_amd64_freebsd 1
+# define GP_ARCH_amd64 1
+# define GP_OS_freebsd 1
+
+#elif defined(__FreeBSD__) && defined(__aarch64__)
+# define GP_PLAT_arm64_freebsd 1
+# define GP_ARCH_arm64 1
+# define GP_OS_freebsd 1
+
+#elif (defined(_MSC_VER) || defined(__MINGW32__)) && \
+ (defined(_M_IX86) || defined(__i386__))
+# define GP_PLAT_x86_windows 1
+# define GP_ARCH_x86 1
+# define GP_OS_windows 1
+
+#elif (defined(_MSC_VER) || defined(__MINGW32__)) && \
+ (defined(_M_X64) || defined(__x86_64__))
+# define GP_PLAT_amd64_windows 1
+# define GP_ARCH_amd64 1
+# define GP_OS_windows 1
+
+#elif defined(_MSC_VER) && defined(_M_ARM64)
+# define GP_PLAT_arm64_windows 1
+# define GP_ARCH_arm64 1
+# define GP_OS_windows 1
+
+#else
+# error "Unsupported platform"
+#endif
+
+#endif /* ndef PLATFORM_MACROS_H */
diff --git a/tools/profiler/core/PowerCounters-linux.cpp b/tools/profiler/core/PowerCounters-linux.cpp
new file mode 100644
index 0000000000..006cea4867
--- /dev/null
+++ b/tools/profiler/core/PowerCounters-linux.cpp
@@ -0,0 +1,287 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "PowerCounters.h"
+#include "nsXULAppAPI.h"
+#include "mozilla/Maybe.h"
+#include "mozilla/Logging.h"
+
+#include <sys/syscall.h>
+#include <sys/ioctl.h>
+#include <unistd.h>
+
+#include <cerrno>
+#include <cinttypes>
+#include <cstdio>
+#include <cstdlib>
+#include <fstream>
+#include <string>
+
+#include <linux/perf_event.h>
+
+// From the kernel rapl_scale() function:
+//
+// > users must then scale back: count * 1/(1e9*2^32) to get Joules
+#define PERF_EVENT_SCALE_NANOJOULES 2.3283064365386962890625e-1
+#define SCALE_NANOJOULES_TO_PICOWATTHOUR 3.6
+#define SYSFS_PERF_POWER_TYPE_PATH "/sys/bus/event_source/devices/power/type"
+
+static mozilla::LazyLogModule sRaplEventLog("profiler.rapl");
+#define RAPL_LOG(...) \
+ MOZ_LOG(sRaplEventLog, mozilla::LogLevel::Debug, (__VA_ARGS__));
+
+enum class RaplEventType : uint64_t {
+ RAPL_ENERGY_CORES = 0x01,
+ RAPL_ENERGY_PKG = 0x02,
+ RAPL_ENERGY_DRAM = 0x03,
+ RAPL_ENERGY_GPU = 0x04,
+ RAPL_ENERGY_PSYS = 0x05,
+};
+
+struct RaplDomain {
+ RaplEventType mRaplEventType;
+ const char* mLabel;
+ const char* mDescription;
+};
+
+constexpr RaplDomain kSupportedRaplDomains[] = {
+ {RaplEventType::RAPL_ENERGY_CORES, "Power: CPU cores",
+ "Consumption of all physical cores"},
+ {
+ RaplEventType::RAPL_ENERGY_PKG,
+ "Power: CPU package",
+ "Consumption of the whole processor package",
+ },
+ {
+ RaplEventType::RAPL_ENERGY_DRAM,
+ "Power: DRAM",
+ "Consumption of the dram domain",
+ },
+ {
+ RaplEventType::RAPL_ENERGY_GPU,
+ "Power: iGPU",
+ "Consumption of the builtin-gpu domain",
+ },
+ {
+ RaplEventType::RAPL_ENERGY_PSYS,
+ "Power: System",
+ "Consumption of the builtin-psys domain",
+ }};
+
+static std::string GetSysfsFileID(RaplEventType aEventType) {
+ switch (aEventType) {
+ case RaplEventType::RAPL_ENERGY_CORES:
+ return "cores";
+ case RaplEventType::RAPL_ENERGY_PKG:
+ return "pkg";
+ case RaplEventType::RAPL_ENERGY_DRAM:
+ return "ram";
+ case RaplEventType::RAPL_ENERGY_GPU:
+ return "gpu";
+ case RaplEventType::RAPL_ENERGY_PSYS:
+ return "psys";
+ }
+
+ return "";
+}
+
+static double GetRaplPerfEventScale(RaplEventType aEventType) {
+ const std::string sysfsFileName =
+ "/sys/bus/event_source/devices/power/events/energy-" +
+ GetSysfsFileID(aEventType) + ".scale";
+ std::ifstream sysfsFile(sysfsFileName);
+
+ if (!sysfsFile) {
+ return PERF_EVENT_SCALE_NANOJOULES;
+ }
+
+ double scale;
+
+ if (sysfsFile >> scale) {
+ RAPL_LOG("Read scale from %s: %.22e", sysfsFileName.c_str(), scale);
+ return scale * 1e9;
+ }
+
+ return PERF_EVENT_SCALE_NANOJOULES;
+}
+
+static uint64_t GetRaplPerfEventConfig(RaplEventType aEventType) {
+ const std::string sysfsFileName =
+ "/sys/bus/event_source/devices/power/events/energy-" +
+ GetSysfsFileID(aEventType);
+ std::ifstream sysfsFile(sysfsFileName);
+
+ if (!sysfsFile) {
+ return static_cast<uint64_t>(aEventType);
+ }
+
+ char buffer[7] = {};
+ const std::string key = "event=";
+
+ if (!sysfsFile.get(buffer, static_cast<std::streamsize>(key.length()) + 1) ||
+ key != buffer) {
+ return static_cast<uint64_t>(aEventType);
+ }
+
+ uint64_t config;
+
+ if (sysfsFile >> std::hex >> config) {
+ RAPL_LOG("Read config from %s: 0x%" PRIx64, sysfsFileName.c_str(), config);
+ return config;
+ }
+
+ return static_cast<uint64_t>(aEventType);
+}
+
+class RaplProfilerCount final : public BaseProfilerCount {
+ public:
+ explicit RaplProfilerCount(int aPerfEventType,
+ const RaplEventType& aPerfEventConfig,
+ const char* aLabel, const char* aDescription)
+ : BaseProfilerCount(aLabel, nullptr, nullptr, "power", aDescription),
+ mLastResult(0),
+ mPerfEventFd(-1) {
+ RAPL_LOG("Creating RAPL Event for type: %s", mLabel);
+
+ // Optimize for ease of use and do not set an excludes value. This
+ // ensures we do not require PERF_PMU_CAP_NO_EXCLUDE.
+ struct perf_event_attr attr = {0};
+ memset(&attr, 0, sizeof(attr));
+ attr.type = aPerfEventType;
+ attr.size = sizeof(struct perf_event_attr);
+ attr.config = GetRaplPerfEventConfig(aPerfEventConfig);
+ attr.sample_period = 0;
+ attr.sample_type = PERF_SAMPLE_IDENTIFIER;
+ attr.inherit = 1;
+
+ RAPL_LOG("Config for event %s: 0x%llx", mLabel, attr.config);
+
+ mEventScale = GetRaplPerfEventScale(aPerfEventConfig);
+ RAPL_LOG("Scale for event %s: %.22e", mLabel, mEventScale);
+
+ long fd = syscall(__NR_perf_event_open, &attr, -1, 0, -1, 0);
+ if (fd < 0) {
+ RAPL_LOG("Event descriptor creation failed for event: %s", mLabel);
+ mPerfEventFd = -1;
+ return;
+ }
+
+ RAPL_LOG("Created descriptor for event: %s", mLabel)
+ mPerfEventFd = static_cast<int>(fd);
+ }
+
+ ~RaplProfilerCount() {
+ if (ValidPerfEventFd()) {
+ ioctl(mPerfEventFd, PERF_EVENT_IOC_DISABLE, 0);
+ close(mPerfEventFd);
+ }
+ }
+
+ RaplProfilerCount(const RaplProfilerCount&) = delete;
+ RaplProfilerCount& operator=(const RaplProfilerCount&) = delete;
+
+ CountSample Sample() override {
+ CountSample result = {
+ .count = 0,
+ .number = 0,
+ .isSampleNew = false,
+ };
+ mozilla::Maybe<uint64_t> raplEventResult = ReadEventFd();
+
+ if (raplEventResult.isNothing()) {
+ return result;
+ }
+
+ // We need to return picowatthour to be consistent with the Windows
+ // EMI API. As a result, the scale calculation should:
+ //
+ // - Convert the returned value to nanojoules
+ // - Convert nanojoules to picowatthour
+ double nanojoules =
+ static_cast<double>(raplEventResult.value()) * mEventScale;
+ double picowatthours = nanojoules / SCALE_NANOJOULES_TO_PICOWATTHOUR;
+ RAPL_LOG("Sample %s { count: %lu, last-result: %lu } = %lfJ", mLabel,
+ raplEventResult.value(), mLastResult, nanojoules * 1e-9);
+
+ result.count = static_cast<int64_t>(picowatthours);
+
+ // If the tick count is the same as the returned value or if this is the
+ // first sample, treat this sample as a duplicate.
+ result.isSampleNew =
+ (mLastResult != 0 && mLastResult != raplEventResult.value() &&
+ result.count >= 0);
+ mLastResult = raplEventResult.value();
+
+ return result;
+ }
+
+ bool ValidPerfEventFd() { return mPerfEventFd >= 0; }
+
+ private:
+ mozilla::Maybe<uint64_t> ReadEventFd() {
+ MOZ_ASSERT(ValidPerfEventFd());
+
+ uint64_t eventResult;
+ ssize_t readBytes = read(mPerfEventFd, &eventResult, sizeof(uint64_t));
+ if (readBytes != sizeof(uint64_t)) {
+ RAPL_LOG("Invalid RAPL event read size: %ld", readBytes);
+ return mozilla::Nothing();
+ }
+
+ return mozilla::Some(eventResult);
+ }
+
+ uint64_t mLastResult;
+ int mPerfEventFd;
+ double mEventScale;
+};
+
+static int GetRaplPerfEventType() {
+ FILE* fp = fopen(SYSFS_PERF_POWER_TYPE_PATH, "r");
+ if (!fp) {
+ RAPL_LOG("Open of " SYSFS_PERF_POWER_TYPE_PATH " failed");
+ return -1;
+ }
+
+ int readTypeValue = -1;
+ if (fscanf(fp, "%d", &readTypeValue) != 1) {
+ RAPL_LOG("Read of " SYSFS_PERF_POWER_TYPE_PATH " failed");
+ }
+ fclose(fp);
+
+ return readTypeValue;
+}
+
+PowerCounters::PowerCounters() {
+ if (!XRE_IsParentProcess()) {
+ // Energy meters are global, so only sample them on the parent.
+ return;
+ }
+
+ // Get the value perf_event_attr.type should be set to for RAPL
+ // perf events.
+ int perfEventType = GetRaplPerfEventType();
+ if (perfEventType < 0) {
+ RAPL_LOG("Failed to find the event type for RAPL perf events.");
+ return;
+ }
+
+ for (const auto& raplEventDomain : kSupportedRaplDomains) {
+ RaplProfilerCount* raplEvent = new RaplProfilerCount(
+ perfEventType, raplEventDomain.mRaplEventType, raplEventDomain.mLabel,
+ raplEventDomain.mDescription);
+ if (!raplEvent->ValidPerfEventFd() || !mCounters.emplaceBack(raplEvent)) {
+ delete raplEvent;
+ }
+ }
+}
+
+PowerCounters::~PowerCounters() {
+ for (auto* raplEvent : mCounters) {
+ delete raplEvent;
+ }
+ mCounters.clear();
+}
+
+void PowerCounters::Sample() {}
diff --git a/tools/profiler/core/PowerCounters-mac-amd64.cpp b/tools/profiler/core/PowerCounters-mac-amd64.cpp
new file mode 100644
index 0000000000..540cee155d
--- /dev/null
+++ b/tools/profiler/core/PowerCounters-mac-amd64.cpp
@@ -0,0 +1,419 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "PowerCounters.h"
+#include "nsDebug.h"
+#include "nsPrintfCString.h"
+#include "nsXULAppAPI.h" // for XRE_IsParentProcess
+
+// Because of the pkg_energy_statistics_t::pkes_version check below, the
+// earliest OS X version this code will work with is 10.9.0 (xnu-2422.1.72).
+
+#include <sys/types.h>
+#include <sys/sysctl.h>
+
+// OS X has four kinds of system calls:
+//
+// 1. Mach traps;
+// 2. UNIX system calls;
+// 3. machine-dependent calls;
+// 4. diagnostic calls.
+//
+// (See "Mac OS X and iOS Internals" by Jonathan Levin for more details.)
+//
+// The last category has a single call named diagCall() or diagCall64(). Its
+// mode is controlled by its first argument, and one of the modes allows access
+// to the Intel RAPL MSRs.
+//
+// The interface to diagCall64() is not exported, so we have to import some
+// definitions from the XNU kernel. All imported definitions are annotated with
+// the XNU source file they come from, and information about what XNU versions
+// they were introduced in and (if relevant) modified.
+
+// The diagCall64() mode.
+// From osfmk/i386/Diagnostics.h
+// - In 10.8.4 (xnu-2050.24.15) this value was introduced. (In 10.8.3 the value
+// 17 was used for dgGzallocTest.)
+#define dgPowerStat 17
+
+// From osfmk/i386/cpu_data.h
+// - In 10.8.5 these values were introduced, along with core_energy_stat_t.
+#define CPU_RTIME_BINS (12)
+#define CPU_ITIME_BINS (CPU_RTIME_BINS)
+
+// core_energy_stat_t and pkg_energy_statistics_t are both from
+// osfmk/i386/Diagnostics.c.
+// - In 10.8.4 (xnu-2050.24.15) both structs were introduced, but with many
+// fewer fields.
+// - In 10.8.5 (xnu-2050.48.11) both structs were substantially expanded, with
+// numerous new fields.
+// - In 10.9.0 (xnu-2422.1.72) pkg_energy_statistics_t::pkes_version was added.
+// diagCall64(dgPowerStat) fills it with '1' in all versions since (up to
+// 10.10.2 at time of writing).
+// - in 10.10.2 (xnu-2782.10.72) core_energy_stat_t::gpmcs was conditionally
+// added, if DIAG_ALL_PMCS is true. (DIAG_ALL_PMCS is not even defined in the
+// source code, but it could be defined at compile-time via compiler flags.)
+// pkg_energy_statistics_t::pkes_version did not change, though.
+
+typedef struct {
+ uint64_t caperf;
+ uint64_t cmperf;
+ uint64_t ccres[6];
+ uint64_t crtimes[CPU_RTIME_BINS];
+ uint64_t citimes[CPU_ITIME_BINS];
+ uint64_t crtime_total;
+ uint64_t citime_total;
+ uint64_t cpu_idle_exits;
+ uint64_t cpu_insns;
+ uint64_t cpu_ucc;
+ uint64_t cpu_urc;
+#if DIAG_ALL_PMCS // Added in 10.10.2 (xnu-2782.10.72).
+ uint64_t gpmcs[4]; // Added in 10.10.2 (xnu-2782.10.72).
+#endif /* DIAG_ALL_PMCS */ // Added in 10.10.2 (xnu-2782.10.72).
+} core_energy_stat_t;
+
+typedef struct {
+ uint64_t pkes_version; // Added in 10.9.0 (xnu-2422.1.72).
+ uint64_t pkg_cres[2][7];
+
+ // This is read from MSR 0x606, which Intel calls MSR_RAPL_POWER_UNIT
+ // and XNU calls MSR_IA32_PKG_POWER_SKU_UNIT.
+ uint64_t pkg_power_unit;
+
+ // These are the four fields for the four RAPL domains. For each field
+ // we list:
+ //
+ // - the corresponding MSR number;
+ // - Intel's name for that MSR;
+ // - XNU's name for that MSR;
+ // - which Intel processors the MSR is supported on.
+ //
+ // The last of these is determined from chapter 35 of Volume 3 of the
+ // "Intel 64 and IA-32 Architecture's Software Developer's Manual",
+ // Order Number 325384. (Note that chapter 35 contradicts section 14.9
+ // to some degree.)
+
+ // 0x611 == MSR_PKG_ENERGY_STATUS == MSR_IA32_PKG_ENERGY_STATUS
+ // Atom (various), Sandy Bridge, Next Gen Xeon Phi (model 0x57).
+ uint64_t pkg_energy;
+
+ // 0x639 == MSR_PP0_ENERGY_STATUS == MSR_IA32_PP0_ENERGY_STATUS
+ // Atom (various), Sandy Bridge, Next Gen Xeon Phi (model 0x57).
+ uint64_t pp0_energy;
+
+ // 0x641 == MSR_PP1_ENERGY_STATUS == MSR_PP1_ENERGY_STATUS
+ // Sandy Bridge, Haswell.
+ uint64_t pp1_energy;
+
+ // 0x619 == MSR_DRAM_ENERGY_STATUS == MSR_IA32_DDR_ENERGY_STATUS
+ // Xeon E5, Xeon E5 v2, Haswell/Haswell-E, Next Gen Xeon Phi (model
+ // 0x57)
+ uint64_t ddr_energy;
+
+ uint64_t llc_flushed_cycles;
+ uint64_t ring_ratio_instantaneous;
+ uint64_t IA_frequency_clipping_cause;
+ uint64_t GT_frequency_clipping_cause;
+ uint64_t pkg_idle_exits;
+ uint64_t pkg_rtimes[CPU_RTIME_BINS];
+ uint64_t pkg_itimes[CPU_ITIME_BINS];
+ uint64_t mbus_delay_time;
+ uint64_t mint_delay_time;
+ uint32_t ncpus;
+ core_energy_stat_t cest[];
+} pkg_energy_statistics_t;
+
+static int diagCall64(uint64_t aMode, void* aBuf) {
+ // We cannot use syscall() here because it doesn't work with diagnostic
+ // system calls -- it raises SIGSYS if you try. So we have to use asm.
+
+#ifdef __x86_64__
+ // The 0x40000 prefix indicates it's a diagnostic system call. The 0x01
+ // suffix indicates the syscall number is 1, which also happens to be the
+ // only diagnostic system call. See osfmk/mach/i386/syscall_sw.h for more
+ // details.
+ static const uint64_t diagCallNum = 0x4000001;
+ uint64_t rv;
+
+ __asm__ __volatile__(
+ "syscall"
+
+ // Return value goes in "a" (%rax).
+ : /* outputs */ "=a"(rv)
+
+ // The syscall number goes in "0", a synonym (from outputs) for "a"
+ // (%rax). The syscall arguments go in "D" (%rdi) and "S" (%rsi).
+ : /* inputs */ "0"(diagCallNum), "D"(aMode), "S"(aBuf)
+
+ // The |syscall| instruction clobbers %rcx, %r11, and %rflags ("cc"). And
+ // this particular syscall also writes memory (aBuf).
+ : /* clobbers */ "rcx", "r11", "cc", "memory");
+ return rv;
+#else
+# error Sorry, only x86-64 is supported
+#endif
+}
+
+// This is a counter to collect power utilization during profiling.
+// It cannot be a raw `ProfilerCounter` because we need to manually add/remove
+// it while the profiler lock is already held.
+class RaplDomain final : public BaseProfilerCount {
+ public:
+ explicit RaplDomain(const char* aLabel, const char* aDescription)
+ : BaseProfilerCount(aLabel, nullptr, nullptr, "power", aDescription),
+ mSample(0),
+ mEnergyStatusUnits(0),
+ mWrapAroundCount(0),
+ mIsSampleNew(false) {}
+
+ CountSample Sample() override {
+ CountSample result;
+
+ // To be consistent with the Windows EMI API,
+ // return values in picowatt-hour.
+ constexpr double NANOJOULES_PER_JOULE = 1'000'000'000;
+ constexpr double NANOJOULES_TO_PICOWATTHOUR = 3.6;
+
+ uint64_t ticks = (uint64_t(mWrapAroundCount) << 32) + mSample;
+ double joulesPerTick = (double)1 / (1 << mEnergyStatusUnits);
+ result.count = static_cast<double>(ticks) * joulesPerTick *
+ NANOJOULES_PER_JOULE / NANOJOULES_TO_PICOWATTHOUR;
+
+ result.number = 0;
+ result.isSampleNew = mIsSampleNew;
+ mIsSampleNew = false;
+ return result;
+ }
+
+ void AddSample(uint32_t aSample, uint32_t aEnergyStatusUnits) {
+ if (aSample == mSample) {
+ return;
+ }
+
+ mEnergyStatusUnits = aEnergyStatusUnits;
+
+ if (aSample > mSample) {
+ mIsSampleNew = true;
+ mSample = aSample;
+ return;
+ }
+
+ // Despite being returned in uint64_t fields, the power counter values
+ // only use the lowest 32 bits of their fields, and we need to handle
+ // wraparounds to avoid our power tracks stopping after a few hours.
+ constexpr uint32_t highestBit = 1 << 31;
+ if ((mSample & highestBit) && !(aSample & highestBit)) {
+ mIsSampleNew = true;
+ ++mWrapAroundCount;
+ mSample = aSample;
+ } else {
+ NS_WARNING("unexpected sample with smaller value");
+ }
+ }
+
+ private:
+ uint32_t mSample;
+ uint32_t mEnergyStatusUnits;
+ uint32_t mWrapAroundCount;
+ bool mIsSampleNew;
+};
+
+class RAPL {
+ bool mIsGpuSupported; // Is the GPU domain supported by the processor?
+ bool mIsRamSupported; // Is the RAM domain supported by the processor?
+
+ // The DRAM domain on Haswell servers has a fixed energy unit (1/65536 J ==
+ // 15.3 microJoules) which is different to the power unit MSR. (See the
+ // "Intel Xeon Processor E5-1600 and E5-2600 v3 Product Families, Volume 2 of
+ // 2, Registers" datasheet, September 2014, Reference Number: 330784-001.)
+ // This field records whether the quirk is present.
+ bool mHasRamUnitsQuirk;
+
+ // The abovementioned 15.3 microJoules value. (2^16 = 65536)
+ static constexpr double kQuirkyRamEnergyStatusUnits = 16;
+
+ // The struct passed to diagCall64().
+ pkg_energy_statistics_t* mPkes;
+
+ RaplDomain* mPkg = nullptr;
+ RaplDomain* mCores = nullptr;
+ RaplDomain* mGpu = nullptr;
+ RaplDomain* mRam = nullptr;
+
+ public:
+ explicit RAPL(PowerCounters::CountVector& aCounters)
+ : mHasRamUnitsQuirk(false) {
+ // Work out which RAPL MSRs this CPU model supports.
+ int cpuModel;
+ size_t size = sizeof(cpuModel);
+ if (sysctlbyname("machdep.cpu.model", &cpuModel, &size, NULL, 0) != 0) {
+ NS_WARNING("sysctlbyname(\"machdep.cpu.model\") failed");
+ return;
+ }
+
+ // This is similar to arch/x86/kernel/cpu/perf_event_intel_rapl.c in
+ // linux-4.1.5/.
+ //
+ // By linux-5.6.14/, this stuff had moved into
+ // arch/x86/events/intel/rapl.c, which references processor families in
+ // arch/x86/include/asm/intel-family.h.
+ switch (cpuModel) {
+ case 0x2a: // Sandy Bridge
+ case 0x3a: // Ivy Bridge
+ // Supports package, cores, GPU.
+ mIsGpuSupported = true;
+ mIsRamSupported = false;
+ break;
+
+ case 0x3f: // Haswell X
+ case 0x4f: // Broadwell X
+ case 0x55: // Skylake X
+ case 0x56: // Broadwell D
+ // Supports package, cores, RAM. Has the units quirk.
+ mIsGpuSupported = false;
+ mIsRamSupported = true;
+ mHasRamUnitsQuirk = true;
+ break;
+
+ case 0x2d: // Sandy Bridge X
+ case 0x3e: // Ivy Bridge X
+ // Supports package, cores, RAM.
+ mIsGpuSupported = false;
+ mIsRamSupported = true;
+ break;
+
+ case 0x3c: // Haswell
+ case 0x3d: // Broadwell
+ case 0x45: // Haswell L
+ case 0x46: // Haswell G
+ case 0x47: // Broadwell G
+ // Supports package, cores, GPU, RAM.
+ mIsGpuSupported = true;
+ mIsRamSupported = true;
+ break;
+
+ case 0x4e: // Skylake L
+ case 0x5e: // Skylake
+ case 0x8e: // Kaby Lake L
+ case 0x9e: // Kaby Lake
+ case 0x66: // Cannon Lake L
+ case 0x7d: // Ice Lake
+ case 0x7e: // Ice Lake L
+ case 0xa5: // Comet Lake
+ case 0xa6: // Comet Lake L
+ // Supports package, cores, GPU, RAM, PSYS.
+ // XXX: this tool currently doesn't measure PSYS.
+ mIsGpuSupported = true;
+ mIsRamSupported = true;
+ break;
+
+ default:
+ NS_WARNING(nsPrintfCString("unknown CPU model: %d", cpuModel).get());
+ return;
+ }
+
+ // Get the maximum number of logical CPUs so that we know how big to make
+ // |mPkes|.
+ int logicalcpu_max;
+ size = sizeof(logicalcpu_max);
+ if (sysctlbyname("hw.logicalcpu_max", &logicalcpu_max, &size, NULL, 0) !=
+ 0) {
+ NS_WARNING("sysctlbyname(\"hw.logicalcpu_max\") failed");
+ return;
+ }
+
+ // Over-allocate by 1024 bytes per CPU to allow for the uncertainty around
+ // core_energy_stat_t::gpmcs and for any other future extensions to that
+ // struct. (The fields we read all come before the core_energy_stat_t
+ // array, so it won't matter to us whether gpmcs is present or not.)
+ size_t pkesSize = sizeof(pkg_energy_statistics_t) +
+ logicalcpu_max * sizeof(core_energy_stat_t) +
+ logicalcpu_max * 1024;
+ mPkes = (pkg_energy_statistics_t*)malloc(pkesSize);
+ if (mPkes && aCounters.reserve(4)) {
+ mPkg = new RaplDomain("Power: CPU package", "RAPL PKG");
+ aCounters.infallibleAppend(mPkg);
+
+ mCores = new RaplDomain("Power: CPU cores", "RAPL PP0");
+ aCounters.infallibleAppend(mCores);
+
+ if (mIsGpuSupported) {
+ mGpu = new RaplDomain("Power: iGPU", "RAPL PP1");
+ aCounters.infallibleAppend(mGpu);
+ }
+
+ if (mIsRamSupported) {
+ mRam = new RaplDomain("Power: DRAM", "RAPL DRAM");
+ aCounters.infallibleAppend(mRam);
+ }
+ }
+ }
+
+ ~RAPL() {
+ free(mPkes);
+ delete mPkg;
+ delete mCores;
+ delete mGpu;
+ delete mRam;
+ }
+
+ void Sample() {
+ constexpr uint64_t kSupportedVersion = 1;
+
+ // If we failed to allocate the memory for package energy statistics, we
+ // have nothing to sample.
+ if (MOZ_UNLIKELY(!mPkes)) {
+ return;
+ }
+
+ // Write an unsupported version number into pkes_version so that the check
+ // below cannot succeed by dumb luck.
+ mPkes->pkes_version = kSupportedVersion - 1;
+
+ // diagCall64() returns 1 on success, and 0 on failure (which can only
+ // happen if the mode is unrecognized, e.g. in 10.7.x or earlier versions).
+ if (diagCall64(dgPowerStat, mPkes) != 1) {
+ NS_WARNING("diagCall64() failed");
+ return;
+ }
+
+ if (mPkes->pkes_version != kSupportedVersion) {
+ NS_WARNING(
+ nsPrintfCString("unexpected pkes_version: %llu", mPkes->pkes_version)
+ .get());
+ return;
+ }
+
+ // Bits 12:8 are the ESU.
+ // Energy measurements come in multiples of 1/(2^ESU).
+ uint32_t energyStatusUnits = (mPkes->pkg_power_unit >> 8) & 0x1f;
+ mPkg->AddSample(mPkes->pkg_energy, energyStatusUnits);
+ mCores->AddSample(mPkes->pp0_energy, energyStatusUnits);
+ if (mIsGpuSupported) {
+ mGpu->AddSample(mPkes->pp1_energy, energyStatusUnits);
+ }
+ if (mIsRamSupported) {
+ mRam->AddSample(mPkes->ddr_energy, mHasRamUnitsQuirk
+ ? kQuirkyRamEnergyStatusUnits
+ : energyStatusUnits);
+ }
+ }
+};
+
+PowerCounters::PowerCounters() {
+ // RAPL values are global, so only sample them on the parent.
+ mRapl = XRE_IsParentProcess() ? new RAPL(mCounters) : nullptr;
+}
+
+PowerCounters::~PowerCounters() {
+ mCounters.clear();
+ delete mRapl;
+ mRapl = nullptr;
+}
+
+void PowerCounters::Sample() {
+ if (mRapl) {
+ mRapl->Sample();
+ }
+}
diff --git a/tools/profiler/core/PowerCounters-mac-arm64.cpp b/tools/profiler/core/PowerCounters-mac-arm64.cpp
new file mode 100644
index 0000000000..3a84a479ef
--- /dev/null
+++ b/tools/profiler/core/PowerCounters-mac-arm64.cpp
@@ -0,0 +1,47 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "PowerCounters.h"
+
+#include <mach/mach.h>
+
+class ProcessPower final : public BaseProfilerCount {
+ public:
+ ProcessPower()
+ : BaseProfilerCount("Process Power", nullptr, nullptr, "power",
+ "Power utilization") {}
+
+ CountSample Sample() override {
+ CountSample result;
+ result.count = GetTaskEnergy();
+ result.number = 0;
+ result.isSampleNew = true;
+ return result;
+ }
+
+ private:
+ int64_t GetTaskEnergy() {
+ task_power_info_v2_data_t task_power_info;
+ mach_msg_type_number_t count = TASK_POWER_INFO_V2_COUNT;
+ kern_return_t kr = task_info(mach_task_self(), TASK_POWER_INFO_V2,
+ (task_info_t)&task_power_info, &count);
+ if (kr != KERN_SUCCESS) {
+ return 0;
+ }
+
+ // task_energy is in nanojoules. To be consistent with the Windows EMI
+ // API, return values in picowatt-hour.
+ return task_power_info.task_energy / 3.6;
+ }
+};
+
+PowerCounters::PowerCounters() : mProcessPower(new ProcessPower()) {
+ if (mProcessPower) {
+ (void)mCounters.append(mProcessPower.get());
+ }
+}
+
+PowerCounters::~PowerCounters() { mCounters.clear(); }
+
+void PowerCounters::Sample() {}
diff --git a/tools/profiler/core/PowerCounters-win.cpp b/tools/profiler/core/PowerCounters-win.cpp
new file mode 100644
index 0000000000..f1d05389b6
--- /dev/null
+++ b/tools/profiler/core/PowerCounters-win.cpp
@@ -0,0 +1,342 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "PowerCounters.h"
+#include "nsXULAppAPI.h" // for XRE_IsParentProcess
+#include "nsString.h"
+
+#include <windows.h>
+#include <devioctl.h>
+#include <setupapi.h> // for SetupDi*
+// LogSeverity, defined by setupapi.h to DWORD, messes with other code.
+#undef LogSeverity
+
+#undef NTDDI_VERSION
+#define NTDDI_VERSION NTDDI_WINBLUE
+#include <emi.h>
+
+#ifndef NTDDI_WIN10_RS5
+// EMI v2 API exists in SDK 10.0.17763 (Windows 10 1809 / Redstone 5) and later.
+// Our build machines are still on SDK 10.0.17134.
+// Remove this block when updating the SDK (bug 1774628).
+typedef EMI_METADATA EMI_METADATA_V1;
+typedef EMI_MEASUREMENT_DATA EMI_CHANNEL_MEASUREMENT_DATA;
+# define EMI_VERSION_V2 2
+
+typedef struct {
+ EMI_MEASUREMENT_UNIT MeasurementUnit;
+ USHORT ChannelNameSize;
+ WCHAR ChannelName[ANYSIZE_ARRAY];
+} EMI_CHANNEL_V2;
+
+typedef struct {
+ WCHAR HardwareOEM[EMI_NAME_MAX];
+ WCHAR HardwareModel[EMI_NAME_MAX];
+ USHORT HardwareRevision;
+ USHORT ChannelCount;
+ EMI_CHANNEL_V2 Channels[ANYSIZE_ARRAY];
+} EMI_METADATA_V2;
+
+# define EMI_CHANNEL_V2_LENGTH(_ChannelNameSize) \
+ (FIELD_OFFSET(EMI_CHANNEL_V2, ChannelName) + (_ChannelNameSize))
+
+# define EMI_CHANNEL_V2_NEXT_CHANNEL(_Channel) \
+ ((EMI_CHANNEL_V2*)((PUCHAR)(_Channel) + \
+ EMI_CHANNEL_V2_LENGTH((_Channel)->ChannelNameSize)))
+#endif
+
+using namespace mozilla;
+
+// This is a counter to collect power utilization during profiling.
+// It cannot be a raw `ProfilerCounter` because we need to manually add/remove
+// it while the profiler lock is already held.
+class PowerMeterChannel final : public BaseProfilerCount {
+ public:
+ explicit PowerMeterChannel(const WCHAR* aChannelName, ULONGLONG aInitialValue,
+ ULONGLONG aInitialTime)
+ : BaseProfilerCount(nullptr, nullptr, nullptr, "power",
+ "Power utilization"),
+ mChannelName(NS_ConvertUTF16toUTF8(aChannelName)),
+ mPreviousValue(aInitialValue),
+ mPreviousTime(aInitialTime),
+ mIsSampleNew(true) {
+ if (mChannelName.Equals("RAPL_Package0_PKG")) {
+ mLabel = "Power: CPU package";
+ mDescription = mChannelName.get();
+ } else if (mChannelName.Equals("RAPL_Package0_PP0")) {
+ mLabel = "Power: CPU cores";
+ mDescription = mChannelName.get();
+ } else if (mChannelName.Equals("RAPL_Package0_PP1")) {
+ mLabel = "Power: iGPU";
+ mDescription = mChannelName.get();
+ } else if (mChannelName.Equals("RAPL_Package0_DRAM")) {
+ mLabel = "Power: DRAM";
+ mDescription = mChannelName.get();
+ } else {
+ unsigned int coreId;
+ if (sscanf(mChannelName.get(), "RAPL_Package0_Core%u_CORE", &coreId) ==
+ 1) {
+ mLabelString = "Power: CPU core ";
+ mLabelString.AppendInt(coreId);
+ mLabel = mLabelString.get();
+ mDescription = mChannelName.get();
+ } else {
+ mLabel = mChannelName.get();
+ }
+ }
+ }
+
+ CountSample Sample() override {
+ CountSample result;
+ result.count = mCounter;
+ result.number = 0;
+ result.isSampleNew = mIsSampleNew;
+ mIsSampleNew = false;
+ return result;
+ }
+
+ void AddSample(ULONGLONG aAbsoluteEnergy, ULONGLONG aAbsoluteTime) {
+ // aAbsoluteTime is the time since the system start in 100ns increments.
+ if (aAbsoluteTime == mPreviousTime) {
+ return;
+ }
+
+ if (aAbsoluteEnergy > mPreviousValue) {
+ int64_t increment = aAbsoluteEnergy - mPreviousValue;
+ mCounter += increment;
+ mPreviousValue += increment;
+ mPreviousTime = aAbsoluteTime;
+ }
+
+ mIsSampleNew = true;
+ }
+
+ private:
+ int64_t mCounter;
+ nsCString mChannelName;
+
+ // Used as a storage when the label can not be a literal string.
+ nsCString mLabelString;
+
+ ULONGLONG mPreviousValue;
+ ULONGLONG mPreviousTime;
+ bool mIsSampleNew;
+};
+
+class PowerMeterDevice {
+ public:
+ explicit PowerMeterDevice(LPCTSTR aDevicePath) {
+ mHandle = ::CreateFile(aDevicePath, GENERIC_READ,
+ FILE_SHARE_READ | FILE_SHARE_WRITE, nullptr,
+ OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, nullptr);
+ if (mHandle == INVALID_HANDLE_VALUE) {
+ return;
+ }
+
+ EMI_VERSION version = {0};
+ DWORD dwOut;
+
+ if (!::DeviceIoControl(mHandle, IOCTL_EMI_GET_VERSION, nullptr, 0, &version,
+ sizeof(version), &dwOut, nullptr) ||
+ (version.EmiVersion != EMI_VERSION_V1 &&
+ version.EmiVersion != EMI_VERSION_V2)) {
+ return;
+ }
+
+ EMI_METADATA_SIZE size = {0};
+ if (!::DeviceIoControl(mHandle, IOCTL_EMI_GET_METADATA_SIZE, nullptr, 0,
+ &size, sizeof(size), &dwOut, nullptr) ||
+ !size.MetadataSize) {
+ return;
+ }
+
+ UniquePtr<uint8_t[]> metadata(new (std::nothrow)
+ uint8_t[size.MetadataSize]);
+ if (!metadata) {
+ return;
+ }
+
+ if (version.EmiVersion == EMI_VERSION_V2) {
+ EMI_METADATA_V2* metadata2 =
+ reinterpret_cast<EMI_METADATA_V2*>(metadata.get());
+ if (!::DeviceIoControl(mHandle, IOCTL_EMI_GET_METADATA, nullptr, 0,
+ metadata2, size.MetadataSize, &dwOut, nullptr)) {
+ return;
+ }
+
+ if (!mChannels.reserve(metadata2->ChannelCount)) {
+ return;
+ }
+
+ mDataBuffer =
+ MakeUnique<EMI_CHANNEL_MEASUREMENT_DATA[]>(metadata2->ChannelCount);
+ if (!mDataBuffer) {
+ return;
+ }
+
+ if (!::DeviceIoControl(
+ mHandle, IOCTL_EMI_GET_MEASUREMENT, nullptr, 0, mDataBuffer.get(),
+ sizeof(EMI_CHANNEL_MEASUREMENT_DATA[metadata2->ChannelCount]),
+ &dwOut, nullptr)) {
+ return;
+ }
+
+ EMI_CHANNEL_V2* channel = &metadata2->Channels[0];
+ for (int i = 0; i < metadata2->ChannelCount; ++i) {
+ EMI_CHANNEL_MEASUREMENT_DATA* channel_data = &mDataBuffer[i];
+ mChannels.infallibleAppend(new PowerMeterChannel(
+ channel->ChannelName, channel_data->AbsoluteEnergy,
+ channel_data->AbsoluteTime));
+ channel = EMI_CHANNEL_V2_NEXT_CHANNEL(channel);
+ }
+ } else if (version.EmiVersion == EMI_VERSION_V1) {
+ EMI_METADATA_V1* metadata1 =
+ reinterpret_cast<EMI_METADATA_V1*>(metadata.get());
+ if (!::DeviceIoControl(mHandle, IOCTL_EMI_GET_METADATA, nullptr, 0,
+ metadata1, size.MetadataSize, &dwOut, nullptr)) {
+ return;
+ }
+
+ mDataBuffer = MakeUnique<EMI_CHANNEL_MEASUREMENT_DATA[]>(1);
+ if (!mDataBuffer) {
+ return;
+ }
+
+ if (!::DeviceIoControl(
+ mHandle, IOCTL_EMI_GET_MEASUREMENT, nullptr, 0, mDataBuffer.get(),
+ sizeof(EMI_CHANNEL_MEASUREMENT_DATA), &dwOut, nullptr)) {
+ return;
+ }
+
+ (void)mChannels.append(new PowerMeterChannel(
+ metadata1->MeteredHardwareName, mDataBuffer[0].AbsoluteEnergy,
+ mDataBuffer[0].AbsoluteTime));
+ }
+ }
+
+ ~PowerMeterDevice() {
+ if (mHandle != INVALID_HANDLE_VALUE) {
+ ::CloseHandle(mHandle);
+ }
+ }
+
+ void Sample() {
+ MOZ_ASSERT(HasChannels());
+ MOZ_ASSERT(mDataBuffer);
+
+ DWORD dwOut;
+ if (!::DeviceIoControl(
+ mHandle, IOCTL_EMI_GET_MEASUREMENT, nullptr, 0, mDataBuffer.get(),
+ sizeof(EMI_CHANNEL_MEASUREMENT_DATA[mChannels.length()]), &dwOut,
+ nullptr)) {
+ return;
+ }
+
+ for (size_t i = 0; i < mChannels.length(); ++i) {
+ EMI_CHANNEL_MEASUREMENT_DATA* channel_data = &mDataBuffer[i];
+ mChannels[i]->AddSample(channel_data->AbsoluteEnergy,
+ channel_data->AbsoluteTime);
+ }
+ }
+
+ bool HasChannels() { return mChannels.length() != 0; }
+ void AppendCountersTo(PowerCounters::CountVector& aCounters) {
+ if (aCounters.reserve(aCounters.length() + mChannels.length())) {
+ for (auto& channel : mChannels) {
+ aCounters.infallibleAppend(channel.get());
+ }
+ }
+ }
+
+ private:
+ Vector<UniquePtr<PowerMeterChannel>, 4> mChannels;
+ HANDLE mHandle = INVALID_HANDLE_VALUE;
+ UniquePtr<EMI_CHANNEL_MEASUREMENT_DATA[]> mDataBuffer;
+};
+
+PowerCounters::PowerCounters() {
+ class MOZ_STACK_CLASS HDevInfoHolder final {
+ public:
+ explicit HDevInfoHolder(HDEVINFO aHandle) : mHandle(aHandle) {}
+
+ ~HDevInfoHolder() { ::SetupDiDestroyDeviceInfoList(mHandle); }
+
+ private:
+ HDEVINFO mHandle;
+ };
+
+ if (!XRE_IsParentProcess()) {
+ // Energy meters are global, so only sample them on the parent.
+ return;
+ }
+
+ // Energy Metering Device Interface
+ // {45BD8344-7ED6-49cf-A440-C276C933B053}
+ //
+ // Using GUID_DEVICE_ENERGY_METER does not compile as the symbol does not
+ // exist before Windows 10.
+ GUID my_GUID_DEVICE_ENERGY_METER = {
+ 0x45bd8344,
+ 0x7ed6,
+ 0x49cf,
+ {0xa4, 0x40, 0xc2, 0x76, 0xc9, 0x33, 0xb0, 0x53}};
+
+ HDEVINFO hdev =
+ ::SetupDiGetClassDevs(&my_GUID_DEVICE_ENERGY_METER, nullptr, nullptr,
+ DIGCF_PRESENT | DIGCF_DEVICEINTERFACE);
+ if (hdev == INVALID_HANDLE_VALUE) {
+ return;
+ }
+
+ HDevInfoHolder hdevHolder(hdev);
+
+ DWORD i = 0;
+ SP_DEVICE_INTERFACE_DATA did = {0};
+ did.cbSize = sizeof(did);
+
+ while (::SetupDiEnumDeviceInterfaces(
+ hdev, nullptr, &my_GUID_DEVICE_ENERGY_METER, i++, &did)) {
+ DWORD bufferSize = 0;
+ ::SetupDiGetDeviceInterfaceDetail(hdev, &did, nullptr, 0, &bufferSize,
+ nullptr);
+ if (::GetLastError() != ERROR_INSUFFICIENT_BUFFER) {
+ continue;
+ }
+
+ UniquePtr<uint8_t[]> buffer(new (std::nothrow) uint8_t[bufferSize]);
+ if (!buffer) {
+ continue;
+ }
+
+ PSP_DEVICE_INTERFACE_DETAIL_DATA pdidd =
+ reinterpret_cast<PSP_DEVICE_INTERFACE_DETAIL_DATA>(buffer.get());
+ MOZ_ASSERT(uintptr_t(buffer.get()) %
+ alignof(PSP_DEVICE_INTERFACE_DETAIL_DATA) ==
+ 0);
+ pdidd->cbSize = sizeof(*pdidd);
+ if (!::SetupDiGetDeviceInterfaceDetail(hdev, &did, pdidd, bufferSize,
+ &bufferSize, nullptr)) {
+ continue;
+ }
+
+ UniquePtr<PowerMeterDevice> pmd =
+ MakeUnique<PowerMeterDevice>(pdidd->DevicePath);
+ if (!pmd->HasChannels() ||
+ !mPowerMeterDevices.emplaceBack(std::move(pmd))) {
+ NS_WARNING("PowerMeterDevice without measurement channel (or OOM)");
+ }
+ }
+
+ for (auto& device : mPowerMeterDevices) {
+ device->AppendCountersTo(mCounters);
+ }
+}
+
+PowerCounters::~PowerCounters() { mCounters.clear(); }
+
+void PowerCounters::Sample() {
+ for (auto& device : mPowerMeterDevices) {
+ device->Sample();
+ }
+}
diff --git a/tools/profiler/core/PowerCounters.h b/tools/profiler/core/PowerCounters.h
new file mode 100644
index 0000000000..2fd8d5892c
--- /dev/null
+++ b/tools/profiler/core/PowerCounters.h
@@ -0,0 +1,52 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef TOOLS_POWERCOUNTERS_H_
+#define TOOLS_POWERCOUNTERS_H_
+
+#include "PlatformMacros.h"
+#include "mozilla/ProfilerCounts.h"
+#include "mozilla/UniquePtr.h"
+#include "mozilla/Vector.h"
+
+#if defined(_MSC_VER)
+class PowerMeterDevice;
+#endif
+#if defined(GP_PLAT_arm64_darwin)
+class ProcessPower;
+#endif
+#if defined(GP_PLAT_amd64_darwin)
+class RAPL;
+#endif
+
+class PowerCounters {
+ public:
+#if defined(_MSC_VER) || defined(GP_OS_darwin) || defined(GP_PLAT_amd64_linux)
+ explicit PowerCounters();
+ ~PowerCounters();
+ void Sample();
+#else
+ explicit PowerCounters(){};
+ ~PowerCounters(){};
+ void Sample(){};
+#endif
+
+ using CountVector = mozilla::Vector<BaseProfilerCount*, 4>;
+ const CountVector& GetCounters() { return mCounters; }
+
+ private:
+ CountVector mCounters;
+
+#if defined(_MSC_VER)
+ mozilla::Vector<mozilla::UniquePtr<PowerMeterDevice>> mPowerMeterDevices;
+#endif
+#if defined(GP_PLAT_arm64_darwin)
+ mozilla::UniquePtr<ProcessPower> mProcessPower;
+#endif
+#if defined(GP_PLAT_amd64_darwin)
+ RAPL* mRapl;
+#endif
+};
+
+#endif /* ndef TOOLS_POWERCOUNTERS_H_ */
diff --git a/tools/profiler/core/ProfileAdditionalInformation.cpp b/tools/profiler/core/ProfileAdditionalInformation.cpp
new file mode 100644
index 0000000000..ba3cd80e7c
--- /dev/null
+++ b/tools/profiler/core/ProfileAdditionalInformation.cpp
@@ -0,0 +1,102 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "ProfileAdditionalInformation.h"
+
+#include "jsapi.h"
+#include "js/JSON.h"
+#include "js/PropertyAndElement.h"
+#include "js/Value.h"
+#include "mozilla/JSONStringWriteFuncs.h"
+#include "mozilla/ipc/IPDLParamTraits.h"
+
+#ifdef MOZ_GECKO_PROFILER
+# include "platform.h"
+
+void mozilla::ProfileGenerationAdditionalInformation::ToJSValue(
+ JSContext* aCx, JS::MutableHandle<JS::Value> aRetVal) const {
+ // Get the shared libraries array.
+ JS::Rooted<JS::Value> sharedLibrariesVal(aCx);
+ {
+ JSONStringWriteFunc<nsCString> buffer;
+ JSONWriter w(buffer, JSONWriter::SingleLineStyle);
+ w.StartArrayElement();
+ AppendSharedLibraries(w, mSharedLibraries);
+ w.EndArray();
+ NS_ConvertUTF8toUTF16 buffer16(buffer.StringCRef());
+ MOZ_ALWAYS_TRUE(JS_ParseJSON(aCx,
+ static_cast<const char16_t*>(buffer16.get()),
+ buffer16.Length(), &sharedLibrariesVal));
+ }
+
+ JS::Rooted<JSObject*> additionalInfoObj(aCx, JS_NewPlainObject(aCx));
+ JS_SetProperty(aCx, additionalInfoObj, "sharedLibraries", sharedLibrariesVal);
+ aRetVal.setObject(*additionalInfoObj);
+}
+#endif // MOZ_GECKO_PROFILER
+
+namespace IPC {
+
+#ifdef MOZ_GECKO_PROFILER
+void IPC::ParamTraits<SharedLibrary>::Write(MessageWriter* aWriter,
+ const paramType& aParam) {
+ WriteParam(aWriter, aParam.mStart);
+ WriteParam(aWriter, aParam.mEnd);
+ WriteParam(aWriter, aParam.mOffset);
+ WriteParam(aWriter, aParam.mBreakpadId);
+ WriteParam(aWriter, aParam.mCodeId);
+ WriteParam(aWriter, aParam.mModuleName);
+ WriteParam(aWriter, aParam.mModulePath);
+ WriteParam(aWriter, aParam.mDebugName);
+ WriteParam(aWriter, aParam.mDebugPath);
+ WriteParam(aWriter, aParam.mVersion);
+ WriteParam(aWriter, aParam.mArch);
+}
+
+bool IPC::ParamTraits<SharedLibrary>::Read(MessageReader* aReader,
+ paramType* aResult) {
+ return ReadParam(aReader, &aResult->mStart) &&
+ ReadParam(aReader, &aResult->mEnd) &&
+ ReadParam(aReader, &aResult->mOffset) &&
+ ReadParam(aReader, &aResult->mBreakpadId) &&
+ ReadParam(aReader, &aResult->mCodeId) &&
+ ReadParam(aReader, &aResult->mModuleName) &&
+ ReadParam(aReader, &aResult->mModulePath) &&
+ ReadParam(aReader, &aResult->mDebugName) &&
+ ReadParam(aReader, &aResult->mDebugPath) &&
+ ReadParam(aReader, &aResult->mVersion) &&
+ ReadParam(aReader, &aResult->mArch);
+}
+
+void IPC::ParamTraits<SharedLibraryInfo>::Write(MessageWriter* aWriter,
+ const paramType& aParam) {
+ paramType& p = const_cast<paramType&>(aParam);
+ WriteParam(aWriter, p.mEntries);
+}
+
+bool IPC::ParamTraits<SharedLibraryInfo>::Read(MessageReader* aReader,
+ paramType* aResult) {
+ return ReadParam(aReader, &aResult->mEntries);
+}
+#endif // MOZ_GECKO_PROFILER
+
+void IPC::ParamTraits<mozilla::ProfileGenerationAdditionalInformation>::Write(
+ MessageWriter* aWriter, const paramType& aParam) {
+#ifdef MOZ_GECKO_PROFILER
+ WriteParam(aWriter, aParam.mSharedLibraries);
+#endif // MOZ_GECKO_PROFILER
+}
+
+bool IPC::ParamTraits<mozilla::ProfileGenerationAdditionalInformation>::Read(
+ MessageReader* aReader, paramType* aResult) {
+#ifdef MOZ_GECKO_PROFILER
+ return ReadParam(aReader, &aResult->mSharedLibraries);
+#else
+ return true;
+#endif // MOZ_GECKO_PROFILER
+}
+
+} // namespace IPC
diff --git a/tools/profiler/core/ProfileBuffer.cpp b/tools/profiler/core/ProfileBuffer.cpp
new file mode 100644
index 0000000000..170a4f14b4
--- /dev/null
+++ b/tools/profiler/core/ProfileBuffer.cpp
@@ -0,0 +1,243 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "ProfileBuffer.h"
+
+#include "BaseProfiler.h"
+#include "js/GCAPI.h"
+#include "jsfriendapi.h"
+#include "mozilla/MathAlgorithms.h"
+#include "nsJSPrincipals.h"
+#include "nsScriptSecurityManager.h"
+
+using namespace mozilla;
+
+ProfileBuffer::ProfileBuffer(ProfileChunkedBuffer& aBuffer)
+ : mEntries(aBuffer) {
+ // Assume the given buffer is in-session.
+ MOZ_ASSERT(mEntries.IsInSession());
+}
+
+/* static */
+ProfileBufferBlockIndex ProfileBuffer::AddEntry(
+ ProfileChunkedBuffer& aProfileChunkedBuffer,
+ const ProfileBufferEntry& aEntry) {
+ switch (aEntry.GetKind()) {
+#define SWITCH_KIND(KIND, TYPE, SIZE) \
+ case ProfileBufferEntry::Kind::KIND: { \
+ return aProfileChunkedBuffer.PutFrom(&aEntry, 1 + (SIZE)); \
+ }
+
+ FOR_EACH_PROFILE_BUFFER_ENTRY_KIND(SWITCH_KIND)
+
+#undef SWITCH_KIND
+ default:
+ MOZ_ASSERT(false, "Unhandled ProfilerBuffer entry KIND");
+ return ProfileBufferBlockIndex{};
+ }
+}
+
+// Called from signal, call only reentrant functions
+uint64_t ProfileBuffer::AddEntry(const ProfileBufferEntry& aEntry) {
+ return AddEntry(mEntries, aEntry).ConvertToProfileBufferIndex();
+}
+
+/* static */
+ProfileBufferBlockIndex ProfileBuffer::AddThreadIdEntry(
+ ProfileChunkedBuffer& aProfileChunkedBuffer, ProfilerThreadId aThreadId) {
+ return AddEntry(aProfileChunkedBuffer,
+ ProfileBufferEntry::ThreadId(aThreadId));
+}
+
+uint64_t ProfileBuffer::AddThreadIdEntry(ProfilerThreadId aThreadId) {
+ return AddThreadIdEntry(mEntries, aThreadId).ConvertToProfileBufferIndex();
+}
+
+void ProfileBuffer::CollectCodeLocation(
+ const char* aLabel, const char* aStr, uint32_t aFrameFlags,
+ uint64_t aInnerWindowID, const Maybe<uint32_t>& aLineNumber,
+ const Maybe<uint32_t>& aColumnNumber,
+ const Maybe<JS::ProfilingCategoryPair>& aCategoryPair) {
+ AddEntry(ProfileBufferEntry::Label(aLabel));
+ AddEntry(ProfileBufferEntry::FrameFlags(uint64_t(aFrameFlags)));
+
+ if (aStr) {
+ // Store the string using one or more DynamicStringFragment entries.
+ size_t strLen = strlen(aStr) + 1; // +1 for the null terminator
+ // If larger than the prescribed limit, we will cut the string and end it
+ // with an ellipsis.
+ const bool tooBig = strLen > kMaxFrameKeyLength;
+ if (tooBig) {
+ strLen = kMaxFrameKeyLength;
+ }
+ char chars[ProfileBufferEntry::kNumChars];
+ for (size_t j = 0;; j += ProfileBufferEntry::kNumChars) {
+ // Store up to kNumChars characters in the entry.
+ size_t len = ProfileBufferEntry::kNumChars;
+ const bool last = j + len >= strLen;
+ if (last) {
+ // Only the last entry may be smaller than kNumChars.
+ len = strLen - j;
+ if (tooBig) {
+ // That last entry is part of a too-big string, replace the end
+ // characters with an ellipsis "...".
+ len = std::max(len, size_t(4));
+ chars[len - 4] = '.';
+ chars[len - 3] = '.';
+ chars[len - 2] = '.';
+ chars[len - 1] = '\0';
+ // Make sure the memcpy will not overwrite our ellipsis!
+ len -= 4;
+ }
+ }
+ memcpy(chars, &aStr[j], len);
+ AddEntry(ProfileBufferEntry::DynamicStringFragment(chars));
+ if (last) {
+ break;
+ }
+ }
+ }
+
+ if (aInnerWindowID) {
+ AddEntry(ProfileBufferEntry::InnerWindowID(aInnerWindowID));
+ }
+
+ if (aLineNumber) {
+ AddEntry(ProfileBufferEntry::LineNumber(*aLineNumber));
+ }
+
+ if (aColumnNumber) {
+ AddEntry(ProfileBufferEntry::ColumnNumber(*aColumnNumber));
+ }
+
+ if (aCategoryPair.isSome()) {
+ AddEntry(ProfileBufferEntry::CategoryPair(int(*aCategoryPair)));
+ }
+}
+
+size_t ProfileBuffer::SizeOfExcludingThis(MallocSizeOf aMallocSizeOf) const {
+ // Measurement of the following members may be added later if DMD finds it
+ // is worthwhile:
+ // - memory pointed to by the elements within mEntries
+ return mEntries.SizeOfExcludingThis(aMallocSizeOf);
+}
+
+size_t ProfileBuffer::SizeOfIncludingThis(MallocSizeOf aMallocSizeOf) const {
+ return aMallocSizeOf(this) + SizeOfExcludingThis(aMallocSizeOf);
+}
+
+void ProfileBuffer::CollectOverheadStats(double aSamplingTimeMs,
+ TimeDuration aLocking,
+ TimeDuration aCleaning,
+ TimeDuration aCounters,
+ TimeDuration aThreads) {
+ double timeUs = aSamplingTimeMs * 1000.0;
+ if (mFirstSamplingTimeUs == 0.0) {
+ mFirstSamplingTimeUs = timeUs;
+ } else {
+ // Note that we'll have 1 fewer interval than other numbers (because
+ // we need both ends of an interval to know its duration). The final
+ // difference should be insignificant over the expected many thousands
+ // of iterations.
+ mIntervalsUs.Count(timeUs - mLastSamplingTimeUs);
+ }
+ mLastSamplingTimeUs = timeUs;
+ double locking = aLocking.ToMilliseconds() * 1000.0;
+ double cleaning = aCleaning.ToMilliseconds() * 1000.0;
+ double counters = aCounters.ToMilliseconds() * 1000.0;
+ double threads = aThreads.ToMilliseconds() * 1000.0;
+
+ mOverheadsUs.Count(locking + cleaning + counters + threads);
+ mLockingsUs.Count(locking);
+ mCleaningsUs.Count(cleaning);
+ mCountersUs.Count(counters);
+ mThreadsUs.Count(threads);
+
+ static const bool sRecordSamplingOverhead = []() {
+ const char* recordOverheads = getenv("MOZ_PROFILER_RECORD_OVERHEADS");
+ return recordOverheads && recordOverheads[0] != '\0';
+ }();
+ if (sRecordSamplingOverhead) {
+ AddEntry(ProfileBufferEntry::ProfilerOverheadTime(aSamplingTimeMs));
+ AddEntry(ProfileBufferEntry::ProfilerOverheadDuration(locking));
+ AddEntry(ProfileBufferEntry::ProfilerOverheadDuration(cleaning));
+ AddEntry(ProfileBufferEntry::ProfilerOverheadDuration(counters));
+ AddEntry(ProfileBufferEntry::ProfilerOverheadDuration(threads));
+ }
+}
+
+ProfilerBufferInfo ProfileBuffer::GetProfilerBufferInfo() const {
+ return {BufferRangeStart(),
+ BufferRangeEnd(),
+ static_cast<uint32_t>(*mEntries.BufferLength() /
+ 8), // 8 bytes per entry.
+ mIntervalsUs,
+ mOverheadsUs,
+ mLockingsUs,
+ mCleaningsUs,
+ mCountersUs,
+ mThreadsUs};
+}
+
+/* ProfileBufferCollector */
+
+void ProfileBufferCollector::CollectNativeLeafAddr(void* aAddr) {
+ mBuf.AddEntry(ProfileBufferEntry::NativeLeafAddr(aAddr));
+}
+
+void ProfileBufferCollector::CollectJitReturnAddr(void* aAddr) {
+ mBuf.AddEntry(ProfileBufferEntry::JitReturnAddr(aAddr));
+}
+
+void ProfileBufferCollector::CollectWasmFrame(const char* aLabel) {
+ mBuf.CollectCodeLocation("", aLabel, 0, 0, Nothing(), Nothing(),
+ Some(JS::ProfilingCategoryPair::JS_Wasm));
+}
+
+void ProfileBufferCollector::CollectProfilingStackFrame(
+ const js::ProfilingStackFrame& aFrame) {
+ // WARNING: this function runs within the profiler's "critical section".
+
+ MOZ_ASSERT(aFrame.isLabelFrame() ||
+ (aFrame.isJsFrame() && !aFrame.isOSRFrame()));
+
+ const char* label = aFrame.label();
+ const char* dynamicString = aFrame.dynamicString();
+ Maybe<uint32_t> line;
+ Maybe<uint32_t> column;
+
+ if (aFrame.isJsFrame()) {
+ // There are two kinds of JS frames that get pushed onto the ProfilingStack.
+ //
+ // - label = "", dynamic string = <something>
+ // - label = "js::RunScript", dynamic string = nullptr
+ //
+ // The line number is only interesting in the first case.
+
+ if (label[0] == '\0') {
+ MOZ_ASSERT(dynamicString);
+
+ // We call aFrame.script() repeatedly -- rather than storing the result in
+ // a local variable in order -- to avoid rooting hazards.
+ if (aFrame.script()) {
+ if (aFrame.pc()) {
+ unsigned col = 0;
+ line = Some(JS_PCToLineNumber(aFrame.script(), aFrame.pc(), &col));
+ column = Some(col);
+ }
+ }
+
+ } else {
+ MOZ_ASSERT(strcmp(label, "js::RunScript") == 0 && !dynamicString);
+ }
+ } else {
+ MOZ_ASSERT(aFrame.isLabelFrame());
+ }
+
+ mBuf.CollectCodeLocation(label, dynamicString, aFrame.flags(),
+ aFrame.realmID(), line, column,
+ Some(aFrame.categoryPair()));
+}
diff --git a/tools/profiler/core/ProfileBuffer.h b/tools/profiler/core/ProfileBuffer.h
new file mode 100644
index 0000000000..5da34909cc
--- /dev/null
+++ b/tools/profiler/core/ProfileBuffer.h
@@ -0,0 +1,260 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef MOZ_PROFILE_BUFFER_H
+#define MOZ_PROFILE_BUFFER_H
+
+#include "GeckoProfiler.h"
+#include "ProfileBufferEntry.h"
+
+#include "mozilla/Maybe.h"
+#include "mozilla/PowerOfTwo.h"
+#include "mozilla/ProfileBufferChunkManagerSingle.h"
+#include "mozilla/ProfileChunkedBuffer.h"
+
+class ProcessStreamingContext;
+class RunningTimes;
+
+// Class storing most profiling data in a ProfileChunkedBuffer.
+//
+// This class is used as a queue of entries which, after construction, never
+// allocates. This makes it safe to use in the profiler's "critical section".
+class ProfileBuffer final {
+ public:
+ // ProfileBuffer constructor
+ // @param aBuffer The in-session ProfileChunkedBuffer to use as buffer
+ // manager.
+ explicit ProfileBuffer(mozilla::ProfileChunkedBuffer& aBuffer);
+
+ mozilla::ProfileChunkedBuffer& UnderlyingChunkedBuffer() const {
+ return mEntries;
+ }
+
+ bool IsThreadSafe() const { return mEntries.IsThreadSafe(); }
+
+ // Add |aEntry| to the buffer, ignoring what kind of entry it is.
+ uint64_t AddEntry(const ProfileBufferEntry& aEntry);
+
+ // Add to the buffer a sample start (ThreadId) entry for aThreadId.
+ // Returns the position of the entry.
+ uint64_t AddThreadIdEntry(ProfilerThreadId aThreadId);
+
+ void CollectCodeLocation(
+ const char* aLabel, const char* aStr, uint32_t aFrameFlags,
+ uint64_t aInnerWindowID, const mozilla::Maybe<uint32_t>& aLineNumber,
+ const mozilla::Maybe<uint32_t>& aColumnNumber,
+ const mozilla::Maybe<JS::ProfilingCategoryPair>& aCategoryPair);
+
+ // Maximum size of a frameKey string that we'll handle.
+ static const size_t kMaxFrameKeyLength = 512;
+
+ // Add JIT frame information to aJITFrameInfo for any JitReturnAddr entries
+ // that are currently in the buffer at or after aRangeStart, in samples
+ // for the given thread.
+ void AddJITInfoForRange(uint64_t aRangeStart, ProfilerThreadId aThreadId,
+ JSContext* aContext, JITFrameInfo& aJITFrameInfo,
+ mozilla::ProgressLogger aProgressLogger) const;
+
+ // Stream JSON for samples in the buffer to aWriter, using the supplied
+ // UniqueStacks object.
+ // Only streams samples for the given thread ID and which were taken at or
+ // after aSinceTime. If ID is 0, ignore the stored thread ID; this should only
+ // be used when the buffer contains only one sample.
+ // aUniqueStacks needs to contain information about any JIT frames that we
+ // might encounter in the buffer, before this method is called. In other
+ // words, you need to have called AddJITInfoForRange for every range that
+ // might contain JIT frame information before calling this method.
+ // Return the thread ID of the streamed sample(s), or 0.
+ ProfilerThreadId StreamSamplesToJSON(
+ SpliceableJSONWriter& aWriter, ProfilerThreadId aThreadId,
+ double aSinceTime, UniqueStacks& aUniqueStacks,
+ mozilla::ProgressLogger aProgressLogger) const;
+
+ void StreamMarkersToJSON(SpliceableJSONWriter& aWriter,
+ ProfilerThreadId aThreadId,
+ const mozilla::TimeStamp& aProcessStartTime,
+ double aSinceTime, UniqueStacks& aUniqueStacks,
+ mozilla::ProgressLogger aProgressLogger) const;
+
+ // Stream samples and markers from all threads that `aProcessStreamingContext`
+ // accepts.
+ void StreamSamplesAndMarkersToJSON(
+ ProcessStreamingContext& aProcessStreamingContext,
+ mozilla::ProgressLogger aProgressLogger) const;
+
+ void StreamPausedRangesToJSON(SpliceableJSONWriter& aWriter,
+ double aSinceTime,
+ mozilla::ProgressLogger aProgressLogger) const;
+ void StreamProfilerOverheadToJSON(
+ SpliceableJSONWriter& aWriter,
+ const mozilla::TimeStamp& aProcessStartTime, double aSinceTime,
+ mozilla::ProgressLogger aProgressLogger) const;
+ void StreamCountersToJSON(SpliceableJSONWriter& aWriter,
+ const mozilla::TimeStamp& aProcessStartTime,
+ double aSinceTime,
+ mozilla::ProgressLogger aProgressLogger) const;
+
+ // Find (via |aLastSample|) the most recent sample for the thread denoted by
+ // |aThreadId| and clone it, patching in the current time as appropriate.
+ // Mutate |aLastSample| to point to the newly inserted sample.
+ // Returns whether duplication was successful.
+ bool DuplicateLastSample(ProfilerThreadId aThreadId, double aSampleTimeMs,
+ mozilla::Maybe<uint64_t>& aLastSample,
+ const RunningTimes& aRunningTimes);
+
+ void DiscardSamplesBeforeTime(double aTime);
+
+ // Read an entry in the buffer.
+ ProfileBufferEntry GetEntry(uint64_t aPosition) const {
+ return mEntries.ReadAt(
+ mozilla::ProfileBufferBlockIndex::CreateFromProfileBufferIndex(
+ aPosition),
+ [&](mozilla::Maybe<mozilla::ProfileBufferEntryReader>&& aMER) {
+ ProfileBufferEntry entry;
+ if (aMER.isSome()) {
+ if (aMER->CurrentBlockIndex().ConvertToProfileBufferIndex() ==
+ aPosition) {
+ // If we're here, it means `aPosition` pointed at a valid block.
+ MOZ_RELEASE_ASSERT(aMER->RemainingBytes() <= sizeof(entry));
+ aMER->ReadBytes(&entry, aMER->RemainingBytes());
+ } else {
+ // EntryReader at the wrong position, pretend to have read
+ // everything.
+ aMER->SetRemainingBytes(0);
+ }
+ }
+ return entry;
+ });
+ }
+
+ size_t SizeOfExcludingThis(mozilla::MallocSizeOf aMallocSizeOf) const;
+ size_t SizeOfIncludingThis(mozilla::MallocSizeOf aMallocSizeOf) const;
+
+ void CollectOverheadStats(double aSamplingTimeMs,
+ mozilla::TimeDuration aLocking,
+ mozilla::TimeDuration aCleaning,
+ mozilla::TimeDuration aCounters,
+ mozilla::TimeDuration aThreads);
+
+ ProfilerBufferInfo GetProfilerBufferInfo() const;
+
+ private:
+ // Add |aEntry| to the provided ProfileChunkedBuffer.
+ // `static` because it may be used to add an entry to a `ProfileChunkedBuffer`
+ // that is not attached to a `ProfileBuffer`.
+ static mozilla::ProfileBufferBlockIndex AddEntry(
+ mozilla::ProfileChunkedBuffer& aProfileChunkedBuffer,
+ const ProfileBufferEntry& aEntry);
+
+ // Add a sample start (ThreadId) entry for aThreadId to the provided
+ // ProfileChunkedBuffer. Returns the position of the entry.
+ // `static` because it may be used to add an entry to a `ProfileChunkedBuffer`
+ // that is not attached to a `ProfileBuffer`.
+ static mozilla::ProfileBufferBlockIndex AddThreadIdEntry(
+ mozilla::ProfileChunkedBuffer& aProfileChunkedBuffer,
+ ProfilerThreadId aThreadId);
+
+ // The storage in which this ProfileBuffer stores its entries.
+ mozilla::ProfileChunkedBuffer& mEntries;
+
+ public:
+ // `BufferRangeStart()` and `BufferRangeEnd()` return `uint64_t` values
+ // corresponding to the first entry and past the last entry stored in
+ // `mEntries`.
+ //
+ // The returned values are not guaranteed to be stable, because other threads
+ // may also be accessing the buffer concurrently. But they will always
+ // increase, and can therefore give an indication of how far these values have
+ // *at least* reached. In particular:
+ // - Entries whose index is strictly less that `BufferRangeStart()` have been
+ // discarded by now, so any related data may also be safely discarded.
+ // - It is safe to try and read entries at any index strictly less than
+ // `BufferRangeEnd()` -- but note that these reads may fail by the time you
+ // request them, as old entries get overwritten by new ones.
+ uint64_t BufferRangeStart() const { return mEntries.GetState().mRangeStart; }
+ uint64_t BufferRangeEnd() const { return mEntries.GetState().mRangeEnd; }
+
+ private:
+ // Single pre-allocated chunk (to avoid spurious mallocs), used when:
+ // - Duplicating sleeping stacks (hence scExpectedMaximumStackSize).
+ // - Adding JIT info.
+ // - Streaming stacks to JSON.
+ // Mutable because it's accessed from non-multithreaded const methods.
+ mutable mozilla::Maybe<mozilla::ProfileBufferChunkManagerSingle>
+ mMaybeWorkerChunkManager;
+ mozilla::ProfileBufferChunkManagerSingle& WorkerChunkManager() const {
+ if (mMaybeWorkerChunkManager.isNothing()) {
+ // Only actually allocate it on first use. (Some ProfileBuffers are
+ // temporary and don't actually need this.)
+ mMaybeWorkerChunkManager.emplace(
+ mozilla::ProfileBufferChunk::SizeofChunkMetadata() +
+ mozilla::ProfileBufferChunkManager::scExpectedMaximumStackSize);
+ }
+ return *mMaybeWorkerChunkManager;
+ }
+
+ // GetStreamingParametersForThreadCallback:
+ // (ProfilerThreadId) -> Maybe<StreamingParametersForThread>
+ template <typename GetStreamingParametersForThreadCallback>
+ ProfilerThreadId DoStreamSamplesAndMarkersToJSON(
+ mozilla::FailureLatch& aFailureLatch,
+ GetStreamingParametersForThreadCallback&&
+ aGetStreamingParametersForThreadCallback,
+ double aSinceTime, ProcessStreamingContext* aStreamingContextForMarkers,
+ mozilla::ProgressLogger aProgressLogger) const;
+
+ double mFirstSamplingTimeUs = 0.0;
+ double mLastSamplingTimeUs = 0.0;
+ ProfilerStats mIntervalsUs;
+ ProfilerStats mOverheadsUs;
+ ProfilerStats mLockingsUs;
+ ProfilerStats mCleaningsUs;
+ ProfilerStats mCountersUs;
+ ProfilerStats mThreadsUs;
+};
+
+/**
+ * Helper type used to implement ProfilerStackCollector. This type is used as
+ * the collector for MergeStacks by ProfileBuffer. It holds a reference to the
+ * buffer, as well as additional feature flags which are needed to control the
+ * data collection strategy
+ */
+class ProfileBufferCollector final : public ProfilerStackCollector {
+ public:
+ ProfileBufferCollector(ProfileBuffer& aBuf, uint64_t aSamplePos,
+ uint64_t aBufferRangeStart)
+ : mBuf(aBuf),
+ mSamplePositionInBuffer(aSamplePos),
+ mBufferRangeStart(aBufferRangeStart) {
+ MOZ_ASSERT(
+ mSamplePositionInBuffer >= mBufferRangeStart,
+ "The sample position should always be after the buffer range start");
+ }
+
+ // Position at which the sample starts in the profiler buffer (which may be
+ // different from the buffer in which the sample data is collected here).
+ mozilla::Maybe<uint64_t> SamplePositionInBuffer() override {
+ return mozilla::Some(mSamplePositionInBuffer);
+ }
+
+ // Profiler buffer's range start (which may be different from the buffer in
+ // which the sample data is collected here).
+ mozilla::Maybe<uint64_t> BufferRangeStart() override {
+ return mozilla::Some(mBufferRangeStart);
+ }
+
+ virtual void CollectNativeLeafAddr(void* aAddr) override;
+ virtual void CollectJitReturnAddr(void* aAddr) override;
+ virtual void CollectWasmFrame(const char* aLabel) override;
+ virtual void CollectProfilingStackFrame(
+ const js::ProfilingStackFrame& aFrame) override;
+
+ private:
+ ProfileBuffer& mBuf;
+ uint64_t mSamplePositionInBuffer;
+ uint64_t mBufferRangeStart;
+};
+
+#endif
diff --git a/tools/profiler/core/ProfileBufferEntry.cpp b/tools/profiler/core/ProfileBufferEntry.cpp
new file mode 100644
index 0000000000..5429eac0b8
--- /dev/null
+++ b/tools/profiler/core/ProfileBufferEntry.cpp
@@ -0,0 +1,2321 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "ProfileBufferEntry.h"
+
+#include "mozilla/ProfilerMarkers.h"
+#include "platform.h"
+#include "ProfileBuffer.h"
+#include "ProfiledThreadData.h"
+#include "ProfilerBacktrace.h"
+#include "ProfilerRustBindings.h"
+
+#include "js/ProfilingFrameIterator.h"
+#include "jsapi.h"
+#include "jsfriendapi.h"
+#include "mozilla/Logging.h"
+#include "mozilla/JSONStringWriteFuncs.h"
+#include "mozilla/ScopeExit.h"
+#include "mozilla/Sprintf.h"
+#include "mozilla/StackWalk.h"
+#include "nsThreadUtils.h"
+#include "nsXULAppAPI.h"
+#include "ProfilerCodeAddressService.h"
+
+#include <ostream>
+#include <type_traits>
+
+using namespace mozilla;
+using namespace mozilla::literals::ProportionValue_literals;
+
+////////////////////////////////////////////////////////////////////////
+// BEGIN ProfileBufferEntry
+
+ProfileBufferEntry::ProfileBufferEntry()
+ : mKind(Kind::INVALID), mStorage{0, 0, 0, 0, 0, 0, 0, 0} {}
+
+// aString must be a static string.
+ProfileBufferEntry::ProfileBufferEntry(Kind aKind, const char* aString)
+ : mKind(aKind) {
+ MOZ_ASSERT(aKind == Kind::Label);
+ memcpy(mStorage, &aString, sizeof(aString));
+}
+
+ProfileBufferEntry::ProfileBufferEntry(Kind aKind, char aChars[kNumChars])
+ : mKind(aKind) {
+ MOZ_ASSERT(aKind == Kind::DynamicStringFragment);
+ memcpy(mStorage, aChars, kNumChars);
+}
+
+ProfileBufferEntry::ProfileBufferEntry(Kind aKind, void* aPtr) : mKind(aKind) {
+ memcpy(mStorage, &aPtr, sizeof(aPtr));
+}
+
+ProfileBufferEntry::ProfileBufferEntry(Kind aKind, double aDouble)
+ : mKind(aKind) {
+ memcpy(mStorage, &aDouble, sizeof(aDouble));
+}
+
+ProfileBufferEntry::ProfileBufferEntry(Kind aKind, int aInt) : mKind(aKind) {
+ memcpy(mStorage, &aInt, sizeof(aInt));
+}
+
+ProfileBufferEntry::ProfileBufferEntry(Kind aKind, int64_t aInt64)
+ : mKind(aKind) {
+ memcpy(mStorage, &aInt64, sizeof(aInt64));
+}
+
+ProfileBufferEntry::ProfileBufferEntry(Kind aKind, uint64_t aUint64)
+ : mKind(aKind) {
+ memcpy(mStorage, &aUint64, sizeof(aUint64));
+}
+
+ProfileBufferEntry::ProfileBufferEntry(Kind aKind, ProfilerThreadId aThreadId)
+ : mKind(aKind) {
+ static_assert(std::is_trivially_copyable_v<ProfilerThreadId>);
+ static_assert(sizeof(aThreadId) <= sizeof(mStorage));
+ memcpy(mStorage, &aThreadId, sizeof(aThreadId));
+}
+
+const char* ProfileBufferEntry::GetString() const {
+ const char* result;
+ memcpy(&result, mStorage, sizeof(result));
+ return result;
+}
+
+void* ProfileBufferEntry::GetPtr() const {
+ void* result;
+ memcpy(&result, mStorage, sizeof(result));
+ return result;
+}
+
+double ProfileBufferEntry::GetDouble() const {
+ double result;
+ memcpy(&result, mStorage, sizeof(result));
+ return result;
+}
+
+int ProfileBufferEntry::GetInt() const {
+ int result;
+ memcpy(&result, mStorage, sizeof(result));
+ return result;
+}
+
+int64_t ProfileBufferEntry::GetInt64() const {
+ int64_t result;
+ memcpy(&result, mStorage, sizeof(result));
+ return result;
+}
+
+uint64_t ProfileBufferEntry::GetUint64() const {
+ uint64_t result;
+ memcpy(&result, mStorage, sizeof(result));
+ return result;
+}
+
+ProfilerThreadId ProfileBufferEntry::GetThreadId() const {
+ ProfilerThreadId result;
+ static_assert(std::is_trivially_copyable_v<ProfilerThreadId>);
+ memcpy(&result, mStorage, sizeof(result));
+ return result;
+}
+
+void ProfileBufferEntry::CopyCharsInto(char (&aOutArray)[kNumChars]) const {
+ memcpy(aOutArray, mStorage, kNumChars);
+}
+
+// END ProfileBufferEntry
+////////////////////////////////////////////////////////////////////////
+
+struct TypeInfo {
+ Maybe<nsCString> mKeyedBy;
+ Maybe<nsCString> mName;
+ Maybe<nsCString> mLocation;
+ Maybe<unsigned> mLineNumber;
+};
+
+// As mentioned in ProfileBufferEntry.h, the JSON format contains many
+// arrays whose elements are laid out according to various schemas to help
+// de-duplication. This RAII class helps write these arrays by keeping track of
+// the last non-null element written and adding the appropriate number of null
+// elements when writing new non-null elements. It also automatically opens and
+// closes an array element on the given JSON writer.
+//
+// You grant the AutoArraySchemaWriter exclusive access to the JSONWriter and
+// the UniqueJSONStrings objects for the lifetime of AutoArraySchemaWriter. Do
+// not access them independently while the AutoArraySchemaWriter is alive.
+// If you need to add complex objects, call FreeFormElement(), which will give
+// you temporary access to the writer.
+//
+// Example usage:
+//
+// // Define the schema of elements in this type of array: [FOO, BAR, BAZ]
+// enum Schema : uint32_t {
+// FOO = 0,
+// BAR = 1,
+// BAZ = 2
+// };
+//
+// AutoArraySchemaWriter writer(someJsonWriter, someUniqueStrings);
+// if (shouldWriteFoo) {
+// writer.IntElement(FOO, getFoo());
+// }
+// ... etc ...
+//
+// The elements need to be added in-order.
+class MOZ_RAII AutoArraySchemaWriter {
+ public:
+ explicit AutoArraySchemaWriter(SpliceableJSONWriter& aWriter)
+ : mJSONWriter(aWriter), mNextFreeIndex(0) {
+ mJSONWriter.StartArrayElement();
+ }
+
+ ~AutoArraySchemaWriter() { mJSONWriter.EndArray(); }
+
+ template <typename T>
+ void IntElement(uint32_t aIndex, T aValue) {
+ static_assert(!std::is_same_v<T, uint64_t>,
+ "Narrowing uint64 -> int64 conversion not allowed");
+ FillUpTo(aIndex);
+ mJSONWriter.IntElement(static_cast<int64_t>(aValue));
+ }
+
+ void DoubleElement(uint32_t aIndex, double aValue) {
+ FillUpTo(aIndex);
+ mJSONWriter.DoubleElement(aValue);
+ }
+
+ void TimeMsElement(uint32_t aIndex, double aTime_ms) {
+ FillUpTo(aIndex);
+ mJSONWriter.TimeDoubleMsElement(aTime_ms);
+ }
+
+ void BoolElement(uint32_t aIndex, bool aValue) {
+ FillUpTo(aIndex);
+ mJSONWriter.BoolElement(aValue);
+ }
+
+ protected:
+ SpliceableJSONWriter& Writer() { return mJSONWriter; }
+
+ void FillUpTo(uint32_t aIndex) {
+ MOZ_ASSERT(aIndex >= mNextFreeIndex);
+ mJSONWriter.NullElements(aIndex - mNextFreeIndex);
+ mNextFreeIndex = aIndex + 1;
+ }
+
+ private:
+ SpliceableJSONWriter& mJSONWriter;
+ uint32_t mNextFreeIndex;
+};
+
+// Same as AutoArraySchemaWriter, but this can also write strings (output as
+// indexes into the table of unique strings).
+class MOZ_RAII AutoArraySchemaWithStringsWriter : public AutoArraySchemaWriter {
+ public:
+ AutoArraySchemaWithStringsWriter(SpliceableJSONWriter& aWriter,
+ UniqueJSONStrings& aStrings)
+ : AutoArraySchemaWriter(aWriter), mStrings(aStrings) {}
+
+ void StringElement(uint32_t aIndex, const Span<const char>& aValue) {
+ FillUpTo(aIndex);
+ mStrings.WriteElement(Writer(), aValue);
+ }
+
+ private:
+ UniqueJSONStrings& mStrings;
+};
+
+Maybe<UniqueStacks::StackKey> UniqueStacks::BeginStack(const FrameKey& aFrame) {
+ if (Maybe<uint32_t> frameIndex = GetOrAddFrameIndex(aFrame); frameIndex) {
+ return Some(StackKey(*frameIndex));
+ }
+ return Nothing{};
+}
+
+Vector<JITFrameInfoForBufferRange>&&
+JITFrameInfo::MoveRangesWithNewFailureLatch(FailureLatch& aFailureLatch) && {
+ aFailureLatch.SetFailureFrom(mLocalFailureLatchSource);
+ return std::move(mRanges);
+}
+
+UniquePtr<UniqueJSONStrings>&&
+JITFrameInfo::MoveUniqueStringsWithNewFailureLatch(
+ FailureLatch& aFailureLatch) && {
+ if (mUniqueStrings) {
+ mUniqueStrings->ChangeFailureLatchAndForwardState(aFailureLatch);
+ } else {
+ aFailureLatch.SetFailureFrom(mLocalFailureLatchSource);
+ }
+ return std::move(mUniqueStrings);
+}
+
+Maybe<UniqueStacks::StackKey> UniqueStacks::AppendFrame(
+ const StackKey& aStack, const FrameKey& aFrame) {
+ if (Maybe<uint32_t> stackIndex = GetOrAddStackIndex(aStack); stackIndex) {
+ if (Maybe<uint32_t> frameIndex = GetOrAddFrameIndex(aFrame); frameIndex) {
+ return Some(StackKey(aStack, *stackIndex, *frameIndex));
+ }
+ }
+ return Nothing{};
+}
+
+JITFrameInfoForBufferRange JITFrameInfoForBufferRange::Clone() const {
+ JITFrameInfoForBufferRange::JITAddressToJITFramesMap jitAddressToJITFramesMap;
+ MOZ_RELEASE_ASSERT(
+ jitAddressToJITFramesMap.reserve(mJITAddressToJITFramesMap.count()));
+ for (auto iter = mJITAddressToJITFramesMap.iter(); !iter.done();
+ iter.next()) {
+ const mozilla::Vector<JITFrameKey>& srcKeys = iter.get().value();
+ mozilla::Vector<JITFrameKey> destKeys;
+ MOZ_RELEASE_ASSERT(destKeys.appendAll(srcKeys));
+ jitAddressToJITFramesMap.putNewInfallible(iter.get().key(),
+ std::move(destKeys));
+ }
+
+ JITFrameInfoForBufferRange::JITFrameToFrameJSONMap jitFrameToFrameJSONMap;
+ MOZ_RELEASE_ASSERT(
+ jitFrameToFrameJSONMap.reserve(mJITFrameToFrameJSONMap.count()));
+ for (auto iter = mJITFrameToFrameJSONMap.iter(); !iter.done(); iter.next()) {
+ jitFrameToFrameJSONMap.putNewInfallible(iter.get().key(),
+ iter.get().value());
+ }
+
+ return JITFrameInfoForBufferRange{mRangeStart, mRangeEnd,
+ std::move(jitAddressToJITFramesMap),
+ std::move(jitFrameToFrameJSONMap)};
+}
+
+JITFrameInfo::JITFrameInfo(const JITFrameInfo& aOther,
+ mozilla::ProgressLogger aProgressLogger)
+ : mUniqueStrings(MakeUniqueFallible<UniqueJSONStrings>(
+ mLocalFailureLatchSource, *aOther.mUniqueStrings,
+ aProgressLogger.CreateSubLoggerFromTo(
+ 0_pc, "Creating JIT frame info unique strings...", 49_pc,
+ "Created JIT frame info unique strings"))) {
+ if (!mUniqueStrings) {
+ mLocalFailureLatchSource.SetFailure(
+ "OOM in JITFrameInfo allocating mUniqueStrings");
+ return;
+ }
+
+ if (mRanges.reserve(aOther.mRanges.length())) {
+ for (auto&& [i, progressLogger] :
+ aProgressLogger.CreateLoopSubLoggersFromTo(50_pc, 100_pc,
+ aOther.mRanges.length(),
+ "Copying JIT frame info")) {
+ mRanges.infallibleAppend(aOther.mRanges[i].Clone());
+ }
+ } else {
+ mLocalFailureLatchSource.SetFailure("OOM in JITFrameInfo resizing mRanges");
+ }
+}
+
+bool UniqueStacks::FrameKey::NormalFrameData::operator==(
+ const NormalFrameData& aOther) const {
+ return mLocation == aOther.mLocation &&
+ mRelevantForJS == aOther.mRelevantForJS &&
+ mBaselineInterp == aOther.mBaselineInterp &&
+ mInnerWindowID == aOther.mInnerWindowID && mLine == aOther.mLine &&
+ mColumn == aOther.mColumn && mCategoryPair == aOther.mCategoryPair;
+}
+
+bool UniqueStacks::FrameKey::JITFrameData::operator==(
+ const JITFrameData& aOther) const {
+ return mCanonicalAddress == aOther.mCanonicalAddress &&
+ mDepth == aOther.mDepth && mRangeIndex == aOther.mRangeIndex;
+}
+
+// Consume aJITFrameInfo by stealing its string table and its JIT frame info
+// ranges. The JIT frame info contains JSON which refers to strings from the
+// JIT frame info's string table, so our string table needs to have the same
+// strings at the same indices.
+UniqueStacks::UniqueStacks(
+ FailureLatch& aFailureLatch, JITFrameInfo&& aJITFrameInfo,
+ ProfilerCodeAddressService* aCodeAddressService /* = nullptr */)
+ : mUniqueStrings(std::move(aJITFrameInfo)
+ .MoveUniqueStringsWithNewFailureLatch(aFailureLatch)),
+ mCodeAddressService(aCodeAddressService),
+ mFrameTableWriter(aFailureLatch),
+ mStackTableWriter(aFailureLatch),
+ mJITInfoRanges(std::move(aJITFrameInfo)
+ .MoveRangesWithNewFailureLatch(aFailureLatch)) {
+ if (!mUniqueStrings) {
+ SetFailure("Did not get mUniqueStrings from JITFrameInfo");
+ return;
+ }
+
+ mFrameTableWriter.StartBareList();
+ mStackTableWriter.StartBareList();
+}
+
+Maybe<uint32_t> UniqueStacks::GetOrAddStackIndex(const StackKey& aStack) {
+ if (Failed()) {
+ return Nothing{};
+ }
+
+ uint32_t count = mStackToIndexMap.count();
+ auto entry = mStackToIndexMap.lookupForAdd(aStack);
+ if (entry) {
+ MOZ_ASSERT(entry->value() < count);
+ return Some(entry->value());
+ }
+
+ if (!mStackToIndexMap.add(entry, aStack, count)) {
+ SetFailure("OOM in UniqueStacks::GetOrAddStackIndex");
+ return Nothing{};
+ }
+ StreamStack(aStack);
+ return Some(count);
+}
+
+Maybe<Vector<UniqueStacks::FrameKey>>
+UniqueStacks::LookupFramesForJITAddressFromBufferPos(void* aJITAddress,
+ uint64_t aBufferPos) {
+ JITFrameInfoForBufferRange* rangeIter =
+ std::lower_bound(mJITInfoRanges.begin(), mJITInfoRanges.end(), aBufferPos,
+ [](const JITFrameInfoForBufferRange& aRange,
+ uint64_t aPos) { return aRange.mRangeEnd < aPos; });
+ MOZ_RELEASE_ASSERT(
+ rangeIter != mJITInfoRanges.end() &&
+ rangeIter->mRangeStart <= aBufferPos &&
+ aBufferPos < rangeIter->mRangeEnd,
+ "Buffer position of jit address needs to be in one of the ranges");
+
+ using JITFrameKey = JITFrameInfoForBufferRange::JITFrameKey;
+
+ const JITFrameInfoForBufferRange& jitFrameInfoRange = *rangeIter;
+ auto jitFrameKeys =
+ jitFrameInfoRange.mJITAddressToJITFramesMap.lookup(aJITAddress);
+ if (!jitFrameKeys) {
+ return Nothing();
+ }
+
+ // Map the array of JITFrameKeys to an array of FrameKeys, and ensure that
+ // each of the FrameKeys exists in mFrameToIndexMap.
+ Vector<FrameKey> frameKeys;
+ MOZ_RELEASE_ASSERT(frameKeys.initCapacity(jitFrameKeys->value().length()));
+ for (const JITFrameKey& jitFrameKey : jitFrameKeys->value()) {
+ FrameKey frameKey(jitFrameKey.mCanonicalAddress, jitFrameKey.mDepth,
+ rangeIter - mJITInfoRanges.begin());
+ uint32_t index = mFrameToIndexMap.count();
+ auto entry = mFrameToIndexMap.lookupForAdd(frameKey);
+ if (!entry) {
+ // We need to add this frame to our frame table. The JSON for this frame
+ // already exists in jitFrameInfoRange, we just need to splice it into
+ // the frame table and give it an index.
+ auto frameJSON =
+ jitFrameInfoRange.mJITFrameToFrameJSONMap.lookup(jitFrameKey);
+ MOZ_RELEASE_ASSERT(frameJSON, "Should have cached JSON for this frame");
+ mFrameTableWriter.Splice(frameJSON->value());
+ MOZ_RELEASE_ASSERT(mFrameToIndexMap.add(entry, frameKey, index));
+ }
+ MOZ_RELEASE_ASSERT(frameKeys.append(std::move(frameKey)));
+ }
+ return Some(std::move(frameKeys));
+}
+
+Maybe<uint32_t> UniqueStacks::GetOrAddFrameIndex(const FrameKey& aFrame) {
+ if (Failed()) {
+ return Nothing{};
+ }
+
+ uint32_t count = mFrameToIndexMap.count();
+ auto entry = mFrameToIndexMap.lookupForAdd(aFrame);
+ if (entry) {
+ MOZ_ASSERT(entry->value() < count);
+ return Some(entry->value());
+ }
+
+ if (!mFrameToIndexMap.add(entry, aFrame, count)) {
+ SetFailure("OOM in UniqueStacks::GetOrAddFrameIndex");
+ return Nothing{};
+ }
+ StreamNonJITFrame(aFrame);
+ return Some(count);
+}
+
+void UniqueStacks::SpliceFrameTableElements(SpliceableJSONWriter& aWriter) {
+ mFrameTableWriter.EndBareList();
+ aWriter.TakeAndSplice(mFrameTableWriter.TakeChunkedWriteFunc());
+}
+
+void UniqueStacks::SpliceStackTableElements(SpliceableJSONWriter& aWriter) {
+ mStackTableWriter.EndBareList();
+ aWriter.TakeAndSplice(mStackTableWriter.TakeChunkedWriteFunc());
+}
+
+[[nodiscard]] nsAutoCString UniqueStacks::FunctionNameOrAddress(void* aPC) {
+ nsAutoCString nameOrAddress;
+
+ if (!mCodeAddressService ||
+ !mCodeAddressService->GetFunction(aPC, nameOrAddress) ||
+ nameOrAddress.IsEmpty()) {
+ nameOrAddress.AppendASCII("0x");
+ // `AppendInt` only knows `uint32_t` or `uint64_t`, but because these are
+ // just aliases for *two* of (`unsigned`, `unsigned long`, and `unsigned
+ // long long`), a call with `uintptr_t` could use the third type and
+ // therefore would be ambiguous.
+ // So we want to force using exactly `uint32_t` or `uint64_t`, whichever
+ // matches the size of `uintptr_t`.
+ // (The outer cast to `uint` should then be a no-op.)
+ using uint = std::conditional_t<sizeof(uintptr_t) <= sizeof(uint32_t),
+ uint32_t, uint64_t>;
+ nameOrAddress.AppendInt(static_cast<uint>(reinterpret_cast<uintptr_t>(aPC)),
+ 16);
+ }
+
+ return nameOrAddress;
+}
+
+void UniqueStacks::StreamStack(const StackKey& aStack) {
+ enum Schema : uint32_t { PREFIX = 0, FRAME = 1 };
+
+ AutoArraySchemaWriter writer(mStackTableWriter);
+ if (aStack.mPrefixStackIndex.isSome()) {
+ writer.IntElement(PREFIX, *aStack.mPrefixStackIndex);
+ }
+ writer.IntElement(FRAME, aStack.mFrameIndex);
+}
+
+void UniqueStacks::StreamNonJITFrame(const FrameKey& aFrame) {
+ if (Failed()) {
+ return;
+ }
+
+ using NormalFrameData = FrameKey::NormalFrameData;
+
+ enum Schema : uint32_t {
+ LOCATION = 0,
+ RELEVANT_FOR_JS = 1,
+ INNER_WINDOW_ID = 2,
+ IMPLEMENTATION = 3,
+ LINE = 4,
+ COLUMN = 5,
+ CATEGORY = 6,
+ SUBCATEGORY = 7
+ };
+
+ AutoArraySchemaWithStringsWriter writer(mFrameTableWriter, *mUniqueStrings);
+
+ const NormalFrameData& data = aFrame.mData.as<NormalFrameData>();
+ writer.StringElement(LOCATION, data.mLocation);
+ writer.BoolElement(RELEVANT_FOR_JS, data.mRelevantForJS);
+
+ // It's okay to convert uint64_t to double here because DOM always creates IDs
+ // that are convertible to double.
+ writer.DoubleElement(INNER_WINDOW_ID, data.mInnerWindowID);
+
+ // The C++ interpreter is the default implementation so we only emit element
+ // for Baseline Interpreter frames.
+ if (data.mBaselineInterp) {
+ writer.StringElement(IMPLEMENTATION, MakeStringSpan("blinterp"));
+ }
+
+ if (data.mLine.isSome()) {
+ writer.IntElement(LINE, *data.mLine);
+ }
+ if (data.mColumn.isSome()) {
+ writer.IntElement(COLUMN, *data.mColumn);
+ }
+ if (data.mCategoryPair.isSome()) {
+ const JS::ProfilingCategoryPairInfo& info =
+ JS::GetProfilingCategoryPairInfo(*data.mCategoryPair);
+ writer.IntElement(CATEGORY, uint32_t(info.mCategory));
+ writer.IntElement(SUBCATEGORY, info.mSubcategoryIndex);
+ }
+}
+
+static void StreamJITFrame(JSContext* aContext, SpliceableJSONWriter& aWriter,
+ UniqueJSONStrings& aUniqueStrings,
+ const JS::ProfiledFrameHandle& aJITFrame) {
+ enum Schema : uint32_t {
+ LOCATION = 0,
+ RELEVANT_FOR_JS = 1,
+ INNER_WINDOW_ID = 2,
+ IMPLEMENTATION = 3,
+ LINE = 4,
+ COLUMN = 5,
+ CATEGORY = 6,
+ SUBCATEGORY = 7
+ };
+
+ AutoArraySchemaWithStringsWriter writer(aWriter, aUniqueStrings);
+
+ writer.StringElement(LOCATION, MakeStringSpan(aJITFrame.label()));
+ writer.BoolElement(RELEVANT_FOR_JS, false);
+
+ // It's okay to convert uint64_t to double here because DOM always creates IDs
+ // that are convertible to double.
+ // Realm ID is the name of innerWindowID inside JS code.
+ writer.DoubleElement(INNER_WINDOW_ID, aJITFrame.realmID());
+
+ JS::ProfilingFrameIterator::FrameKind frameKind = aJITFrame.frameKind();
+ MOZ_ASSERT(frameKind == JS::ProfilingFrameIterator::Frame_Ion ||
+ frameKind == JS::ProfilingFrameIterator::Frame_Baseline);
+ writer.StringElement(IMPLEMENTATION,
+ frameKind == JS::ProfilingFrameIterator::Frame_Ion
+ ? MakeStringSpan("ion")
+ : MakeStringSpan("baseline"));
+
+ const JS::ProfilingCategoryPairInfo& info = JS::GetProfilingCategoryPairInfo(
+ frameKind == JS::ProfilingFrameIterator::Frame_Ion
+ ? JS::ProfilingCategoryPair::JS_IonMonkey
+ : JS::ProfilingCategoryPair::JS_Baseline);
+ writer.IntElement(CATEGORY, uint32_t(info.mCategory));
+ writer.IntElement(SUBCATEGORY, info.mSubcategoryIndex);
+}
+
+static nsCString JSONForJITFrame(JSContext* aContext,
+ const JS::ProfiledFrameHandle& aJITFrame,
+ UniqueJSONStrings& aUniqueStrings) {
+ nsCString json;
+ JSONStringRefWriteFunc jw(json);
+ SpliceableJSONWriter writer(jw, aUniqueStrings.SourceFailureLatch());
+ StreamJITFrame(aContext, writer, aUniqueStrings, aJITFrame);
+ return json;
+}
+
+void JITFrameInfo::AddInfoForRange(
+ uint64_t aRangeStart, uint64_t aRangeEnd, JSContext* aCx,
+ const std::function<void(const std::function<void(void*)>&)>&
+ aJITAddressProvider) {
+ if (mLocalFailureLatchSource.Failed()) {
+ return;
+ }
+
+ if (aRangeStart == aRangeEnd) {
+ return;
+ }
+
+ MOZ_RELEASE_ASSERT(aRangeStart < aRangeEnd);
+
+ if (!mRanges.empty()) {
+ const JITFrameInfoForBufferRange& prevRange = mRanges.back();
+ MOZ_RELEASE_ASSERT(prevRange.mRangeEnd <= aRangeStart,
+ "Ranges must be non-overlapping and added in-order.");
+ }
+
+ using JITFrameKey = JITFrameInfoForBufferRange::JITFrameKey;
+
+ JITFrameInfoForBufferRange::JITAddressToJITFramesMap jitAddressToJITFrameMap;
+ JITFrameInfoForBufferRange::JITFrameToFrameJSONMap jitFrameToFrameJSONMap;
+
+ aJITAddressProvider([&](void* aJITAddress) {
+ // Make sure that we have cached data for aJITAddress.
+ auto addressEntry = jitAddressToJITFrameMap.lookupForAdd(aJITAddress);
+ if (!addressEntry) {
+ Vector<JITFrameKey> jitFrameKeys;
+ for (JS::ProfiledFrameHandle handle :
+ JS::GetProfiledFrames(aCx, aJITAddress)) {
+ uint32_t depth = jitFrameKeys.length();
+ JITFrameKey jitFrameKey{handle.canonicalAddress(), depth};
+ auto frameEntry = jitFrameToFrameJSONMap.lookupForAdd(jitFrameKey);
+ if (!frameEntry) {
+ if (!jitFrameToFrameJSONMap.add(
+ frameEntry, jitFrameKey,
+ JSONForJITFrame(aCx, handle, *mUniqueStrings))) {
+ mLocalFailureLatchSource.SetFailure(
+ "OOM in JITFrameInfo::AddInfoForRange adding jit->frame map");
+ return;
+ }
+ }
+ if (!jitFrameKeys.append(jitFrameKey)) {
+ mLocalFailureLatchSource.SetFailure(
+ "OOM in JITFrameInfo::AddInfoForRange adding jit frame key");
+ return;
+ }
+ }
+ if (!jitAddressToJITFrameMap.add(addressEntry, aJITAddress,
+ std::move(jitFrameKeys))) {
+ mLocalFailureLatchSource.SetFailure(
+ "OOM in JITFrameInfo::AddInfoForRange adding addr->jit map");
+ return;
+ }
+ }
+ });
+
+ if (!mRanges.append(JITFrameInfoForBufferRange{
+ aRangeStart, aRangeEnd, std::move(jitAddressToJITFrameMap),
+ std::move(jitFrameToFrameJSONMap)})) {
+ mLocalFailureLatchSource.SetFailure(
+ "OOM in JITFrameInfo::AddInfoForRange adding range");
+ return;
+ }
+}
+
+struct ProfileSample {
+ uint32_t mStack = 0;
+ double mTime = 0.0;
+ Maybe<double> mResponsiveness;
+ RunningTimes mRunningTimes;
+};
+
+// Write CPU measurements with "Delta" unit, which is some amount of work that
+// happened since the previous sample.
+static void WriteDelta(AutoArraySchemaWriter& aSchemaWriter, uint32_t aProperty,
+ uint64_t aDelta) {
+ aSchemaWriter.IntElement(aProperty, int64_t(aDelta));
+}
+
+static void WriteSample(SpliceableJSONWriter& aWriter,
+ const ProfileSample& aSample) {
+ enum Schema : uint32_t {
+ STACK = 0,
+ TIME = 1,
+ EVENT_DELAY = 2
+#define RUNNING_TIME_SCHEMA(index, name, unit, jsonProperty) , name
+ PROFILER_FOR_EACH_RUNNING_TIME(RUNNING_TIME_SCHEMA)
+#undef RUNNING_TIME_SCHEMA
+ };
+
+ AutoArraySchemaWriter writer(aWriter);
+
+ writer.IntElement(STACK, aSample.mStack);
+
+ writer.TimeMsElement(TIME, aSample.mTime);
+
+ if (aSample.mResponsiveness.isSome()) {
+ writer.DoubleElement(EVENT_DELAY, *aSample.mResponsiveness);
+ }
+
+#define RUNNING_TIME_STREAM(index, name, unit, jsonProperty) \
+ aSample.mRunningTimes.GetJson##name##unit().apply( \
+ [&writer](const uint64_t& aValue) { \
+ Write##unit(writer, name, aValue); \
+ });
+
+ PROFILER_FOR_EACH_RUNNING_TIME(RUNNING_TIME_STREAM)
+
+#undef RUNNING_TIME_STREAM
+}
+
+static void StreamMarkerAfterKind(
+ ProfileBufferEntryReader& aER,
+ ProcessStreamingContext& aProcessStreamingContext) {
+ ThreadStreamingContext* threadData = nullptr;
+ mozilla::base_profiler_markers_detail::DeserializeAfterKindAndStream(
+ aER,
+ [&](ProfilerThreadId aThreadId) -> baseprofiler::SpliceableJSONWriter* {
+ threadData =
+ aProcessStreamingContext.GetThreadStreamingContext(aThreadId);
+ return threadData ? &threadData->mMarkersDataWriter : nullptr;
+ },
+ [&](ProfileChunkedBuffer& aChunkedBuffer) {
+ ProfilerBacktrace backtrace("", &aChunkedBuffer);
+ MOZ_ASSERT(threadData,
+ "threadData should have been set before calling here");
+ backtrace.StreamJSON(threadData->mMarkersDataWriter,
+ aProcessStreamingContext.ProcessStartTime(),
+ *threadData->mUniqueStacks);
+ },
+ [&](mozilla::base_profiler_markers_detail::Streaming::DeserializerTag
+ aTag) {
+ MOZ_ASSERT(threadData,
+ "threadData should have been set before calling here");
+
+ size_t payloadSize = aER.RemainingBytes();
+
+ ProfileBufferEntryReader::DoubleSpanOfConstBytes spans =
+ aER.ReadSpans(payloadSize);
+ if (MOZ_LIKELY(spans.IsSingleSpan())) {
+ // Only a single span, we can just refer to it directly
+ // instead of copying it.
+ profiler::ffi::gecko_profiler_serialize_marker_for_tag(
+ aTag, spans.mFirstOrOnly.Elements(), payloadSize,
+ &threadData->mMarkersDataWriter);
+ } else {
+ // Two spans, we need to concatenate them by copying.
+ uint8_t* payloadBuffer = new uint8_t[payloadSize];
+ spans.CopyBytesTo(payloadBuffer);
+ profiler::ffi::gecko_profiler_serialize_marker_for_tag(
+ aTag, payloadBuffer, payloadSize,
+ &threadData->mMarkersDataWriter);
+ delete[] payloadBuffer;
+ }
+ });
+}
+
+class EntryGetter {
+ public:
+ explicit EntryGetter(
+ ProfileChunkedBuffer::Reader& aReader,
+ mozilla::FailureLatch& aFailureLatch,
+ mozilla::ProgressLogger aProgressLogger = {},
+ uint64_t aInitialReadPos = 0,
+ ProcessStreamingContext* aStreamingContextForMarkers = nullptr)
+ : mFailureLatch(aFailureLatch),
+ mStreamingContextForMarkers(aStreamingContextForMarkers),
+ mBlockIt(
+ aReader.At(ProfileBufferBlockIndex::CreateFromProfileBufferIndex(
+ aInitialReadPos))),
+ mBlockItEnd(aReader.end()),
+ mRangeStart(mBlockIt.BufferRangeStart().ConvertToProfileBufferIndex()),
+ mRangeSize(
+ double(mBlockIt.BufferRangeEnd().ConvertToProfileBufferIndex() -
+ mRangeStart)),
+ mProgressLogger(std::move(aProgressLogger)) {
+ SetLocalProgress(ProgressLogger::NO_LOCATION_UPDATE);
+ if (!ReadLegacyOrEnd()) {
+ // Find and read the next non-legacy entry.
+ Next();
+ }
+ }
+
+ bool Has() const {
+ return (!mFailureLatch.Failed()) && (mBlockIt != mBlockItEnd);
+ }
+
+ const ProfileBufferEntry& Get() const {
+ MOZ_ASSERT(Has() || mFailureLatch.Failed(),
+ "Caller should have checked `Has()` before `Get()`");
+ return mEntry;
+ }
+
+ void Next() {
+ MOZ_ASSERT(Has() || mFailureLatch.Failed(),
+ "Caller should have checked `Has()` before `Next()`");
+ ++mBlockIt;
+ ReadUntilLegacyOrEnd();
+ }
+
+ // Hand off the current iterator to the caller, which may be used to read
+ // any kind of entries (legacy or modern).
+ ProfileChunkedBuffer::BlockIterator Iterator() const { return mBlockIt; }
+
+ // After `Iterator()` was used, we can restart from *after* its updated
+ // position.
+ void RestartAfter(const ProfileChunkedBuffer::BlockIterator& it) {
+ mBlockIt = it;
+ if (!Has()) {
+ return;
+ }
+ Next();
+ }
+
+ ProfileBufferBlockIndex CurBlockIndex() const {
+ return mBlockIt.CurrentBlockIndex();
+ }
+
+ uint64_t CurPos() const {
+ return CurBlockIndex().ConvertToProfileBufferIndex();
+ }
+
+ void SetLocalProgress(const char* aLocation) {
+ mProgressLogger.SetLocalProgress(
+ ProportionValue{double(CurBlockIndex().ConvertToProfileBufferIndex() -
+ mRangeStart) /
+ mRangeSize},
+ aLocation);
+ }
+
+ private:
+ // Try to read the entry at the current `mBlockIt` position.
+ // * If we're at the end of the buffer, just return `true`.
+ // * If there is a "legacy" entry (containing a real `ProfileBufferEntry`),
+ // read it into `mEntry`, and return `true` as well.
+ // * Otherwise the entry contains a "modern" type that cannot be read into
+ // `mEntry`, return `false` (so `EntryGetter` can skip to another entry).
+ bool ReadLegacyOrEnd() {
+ if (!Has()) {
+ return true;
+ }
+ // Read the entry "kind", which is always at the start of all entries.
+ ProfileBufferEntryReader er = *mBlockIt;
+ auto type = static_cast<ProfileBufferEntry::Kind>(
+ er.ReadObject<ProfileBufferEntry::KindUnderlyingType>());
+ MOZ_ASSERT(static_cast<ProfileBufferEntry::KindUnderlyingType>(type) <
+ static_cast<ProfileBufferEntry::KindUnderlyingType>(
+ ProfileBufferEntry::Kind::MODERN_LIMIT));
+ if (type >= ProfileBufferEntry::Kind::LEGACY_LIMIT) {
+ if (type == ProfileBufferEntry::Kind::Marker &&
+ mStreamingContextForMarkers) {
+ StreamMarkerAfterKind(er, *mStreamingContextForMarkers);
+ if (!Has()) {
+ return true;
+ }
+ SetLocalProgress("Processed marker");
+ }
+ er.SetRemainingBytes(0);
+ return false;
+ }
+ // Here, we have a legacy item, we need to read it from the start.
+ // Because the above `ReadObject` moved the reader, we ned to reset it to
+ // the start of the entry before reading the whole entry.
+ er = *mBlockIt;
+ er.ReadBytes(&mEntry, er.RemainingBytes());
+ return true;
+ }
+
+ void ReadUntilLegacyOrEnd() {
+ for (;;) {
+ if (ReadLegacyOrEnd()) {
+ // Either we're at the end, or we could read a legacy entry -> Done.
+ break;
+ }
+ // Otherwise loop around until we hit a legacy entry or the end.
+ ++mBlockIt;
+ }
+ SetLocalProgress(ProgressLogger::NO_LOCATION_UPDATE);
+ }
+
+ mozilla::FailureLatch& mFailureLatch;
+
+ ProcessStreamingContext* const mStreamingContextForMarkers;
+
+ ProfileBufferEntry mEntry;
+ ProfileChunkedBuffer::BlockIterator mBlockIt;
+ const ProfileChunkedBuffer::BlockIterator mBlockItEnd;
+
+ // Progress logger, and the data needed to compute the current relative
+ // position in the buffer.
+ const mozilla::ProfileBufferIndex mRangeStart;
+ const double mRangeSize;
+ mozilla::ProgressLogger mProgressLogger;
+};
+
+// The following grammar shows legal sequences of profile buffer entries.
+// The sequences beginning with a ThreadId entry are known as "samples".
+//
+// (
+// ( /* Samples */
+// ThreadId
+// TimeBeforeCompactStack
+// RunningTimes?
+// UnresponsivenessDurationMs?
+// CompactStack
+// /* internally including:
+// ( NativeLeafAddr
+// | Label FrameFlags? DynamicStringFragment*
+// LineNumber? CategoryPair?
+// | JitReturnAddr
+// )+
+// */
+// )
+// | ( /* Reference to a previous identical sample */
+// ThreadId
+// TimeBeforeSameSample
+// RunningTimes?
+// SameSample
+// )
+// | Marker
+// | ( /* Counters */
+// CounterId
+// Time
+// (
+// CounterKey
+// Count
+// Number?
+// )*
+// )
+// | CollectionStart
+// | CollectionEnd
+// | Pause
+// | Resume
+// | ( ProfilerOverheadTime /* Sampling start timestamp */
+// ProfilerOverheadDuration /* Lock acquisition */
+// ProfilerOverheadDuration /* Expired markers cleaning */
+// ProfilerOverheadDuration /* Counters */
+// ProfilerOverheadDuration /* Threads */
+// )
+// )*
+//
+// The most complicated part is the stack entry sequence that begins with
+// Label. Here are some examples.
+//
+// - ProfilingStack frames without a dynamic string:
+//
+// Label("js::RunScript")
+// CategoryPair(JS::ProfilingCategoryPair::JS)
+//
+// Label("XREMain::XRE_main")
+// LineNumber(4660)
+// CategoryPair(JS::ProfilingCategoryPair::OTHER)
+//
+// Label("ElementRestyler::ComputeStyleChangeFor")
+// LineNumber(3003)
+// CategoryPair(JS::ProfilingCategoryPair::CSS)
+//
+// - ProfilingStack frames with a dynamic string:
+//
+// Label("nsObserverService::NotifyObservers")
+// FrameFlags(uint64_t(ProfilingStackFrame::Flags::IS_LABEL_FRAME))
+// DynamicStringFragment("domwindo")
+// DynamicStringFragment("wopened")
+// LineNumber(291)
+// CategoryPair(JS::ProfilingCategoryPair::OTHER)
+//
+// Label("")
+// FrameFlags(uint64_t(ProfilingStackFrame::Flags::IS_JS_FRAME))
+// DynamicStringFragment("closeWin")
+// DynamicStringFragment("dow (chr")
+// DynamicStringFragment("ome://gl")
+// DynamicStringFragment("obal/con")
+// DynamicStringFragment("tent/glo")
+// DynamicStringFragment("balOverl")
+// DynamicStringFragment("ay.js:5)")
+// DynamicStringFragment("") # this string holds the closing '\0'
+// LineNumber(25)
+// CategoryPair(JS::ProfilingCategoryPair::JS)
+//
+// Label("")
+// FrameFlags(uint64_t(ProfilingStackFrame::Flags::IS_JS_FRAME))
+// DynamicStringFragment("bound (s")
+// DynamicStringFragment("elf-host")
+// DynamicStringFragment("ed:914)")
+// LineNumber(945)
+// CategoryPair(JS::ProfilingCategoryPair::JS)
+//
+// - A profiling stack frame with an overly long dynamic string:
+//
+// Label("")
+// FrameFlags(uint64_t(ProfilingStackFrame::Flags::IS_LABEL_FRAME))
+// DynamicStringFragment("(too lon")
+// DynamicStringFragment("g)")
+// LineNumber(100)
+// CategoryPair(JS::ProfilingCategoryPair::NETWORK)
+//
+// - A wasm JIT frame:
+//
+// Label("")
+// FrameFlags(uint64_t(0))
+// DynamicStringFragment("wasm-fun")
+// DynamicStringFragment("ction[87")
+// DynamicStringFragment("36] (blo")
+// DynamicStringFragment("b:http:/")
+// DynamicStringFragment("/webasse")
+// DynamicStringFragment("mbly.org")
+// DynamicStringFragment("/3dc5759")
+// DynamicStringFragment("4-ce58-4")
+// DynamicStringFragment("626-975b")
+// DynamicStringFragment("-08ad116")
+// DynamicStringFragment("30bc1:38")
+// DynamicStringFragment("29856)")
+//
+// - A JS frame in a synchronous sample:
+//
+// Label("")
+// FrameFlags(uint64_t(ProfilingStackFrame::Flags::IS_LABEL_FRAME))
+// DynamicStringFragment("u (https")
+// DynamicStringFragment("://perf-")
+// DynamicStringFragment("html.io/")
+// DynamicStringFragment("ac0da204")
+// DynamicStringFragment("aaa44d75")
+// DynamicStringFragment("a800.bun")
+// DynamicStringFragment("dle.js:2")
+// DynamicStringFragment("5)")
+
+// Because this is a format entirely internal to the Profiler, any parsing
+// error indicates a bug in the ProfileBuffer writing or the parser itself,
+// or possibly flaky hardware.
+#define ERROR_AND_CONTINUE(msg) \
+ { \
+ fprintf(stderr, "ProfileBuffer parse error: %s", msg); \
+ MOZ_ASSERT(false, msg); \
+ continue; \
+ }
+
+struct StreamingParametersForThread {
+ SpliceableJSONWriter& mWriter;
+ UniqueStacks& mUniqueStacks;
+ ThreadStreamingContext::PreviousStackState& mPreviousStackState;
+ uint32_t& mPreviousStack;
+
+ StreamingParametersForThread(
+ SpliceableJSONWriter& aWriter, UniqueStacks& aUniqueStacks,
+ ThreadStreamingContext::PreviousStackState& aPreviousStackState,
+ uint32_t& aPreviousStack)
+ : mWriter(aWriter),
+ mUniqueStacks(aUniqueStacks),
+ mPreviousStackState(aPreviousStackState),
+ mPreviousStack(aPreviousStack) {}
+};
+
+// GetStreamingParametersForThreadCallback:
+// (ProfilerThreadId) -> Maybe<StreamingParametersForThread>
+template <typename GetStreamingParametersForThreadCallback>
+ProfilerThreadId ProfileBuffer::DoStreamSamplesAndMarkersToJSON(
+ mozilla::FailureLatch& aFailureLatch,
+ GetStreamingParametersForThreadCallback&&
+ aGetStreamingParametersForThreadCallback,
+ double aSinceTime, ProcessStreamingContext* aStreamingContextForMarkers,
+ mozilla::ProgressLogger aProgressLogger) const {
+ UniquePtr<char[]> dynStrBuf = MakeUnique<char[]>(kMaxFrameKeyLength);
+
+ return mEntries.Read([&](ProfileChunkedBuffer::Reader* aReader) {
+ MOZ_ASSERT(aReader,
+ "ProfileChunkedBuffer cannot be out-of-session when sampler is "
+ "running");
+
+ ProfilerThreadId processedThreadId;
+
+ EntryGetter e(*aReader, aFailureLatch, std::move(aProgressLogger),
+ /* aInitialReadPos */ 0, aStreamingContextForMarkers);
+
+ for (;;) {
+ // This block skips entries until we find the start of the next sample.
+ // This is useful in three situations.
+ //
+ // - The circular buffer overwrites old entries, so when we start parsing
+ // we might be in the middle of a sample, and we must skip forward to
+ // the start of the next sample.
+ //
+ // - We skip samples that don't have an appropriate ThreadId or Time.
+ //
+ // - We skip range Pause, Resume, CollectionStart, Marker, Counter
+ // and CollectionEnd entries between samples.
+ while (e.Has()) {
+ if (e.Get().IsThreadId()) {
+ break;
+ }
+ e.Next();
+ }
+
+ if (!e.Has()) {
+ break;
+ }
+
+ // Due to the skip_to_next_sample block above, if we have an entry here it
+ // must be a ThreadId entry.
+ MOZ_ASSERT(e.Get().IsThreadId());
+
+ ProfilerThreadId threadId = e.Get().GetThreadId();
+ e.Next();
+
+ Maybe<StreamingParametersForThread> streamingParameters =
+ std::forward<GetStreamingParametersForThreadCallback>(
+ aGetStreamingParametersForThreadCallback)(threadId);
+
+ // Ignore samples that are for the wrong thread.
+ if (!streamingParameters) {
+ continue;
+ }
+
+ SpliceableJSONWriter& writer = streamingParameters->mWriter;
+ UniqueStacks& uniqueStacks = streamingParameters->mUniqueStacks;
+ ThreadStreamingContext::PreviousStackState& previousStackState =
+ streamingParameters->mPreviousStackState;
+ uint32_t& previousStack = streamingParameters->mPreviousStack;
+
+ auto ReadStack = [&](EntryGetter& e, double time, uint64_t entryPosition,
+ const Maybe<double>& unresponsiveDuration,
+ const RunningTimes& runningTimes) {
+ if (writer.Failed()) {
+ return;
+ }
+
+ Maybe<UniqueStacks::StackKey> maybeStack =
+ uniqueStacks.BeginStack(UniqueStacks::FrameKey("(root)"));
+ if (!maybeStack) {
+ writer.SetFailure("BeginStack failure");
+ return;
+ }
+
+ UniqueStacks::StackKey stack = *maybeStack;
+
+ int numFrames = 0;
+ while (e.Has()) {
+ if (e.Get().IsNativeLeafAddr()) {
+ numFrames++;
+
+ void* pc = e.Get().GetPtr();
+ e.Next();
+
+ nsAutoCString functionNameOrAddress =
+ uniqueStacks.FunctionNameOrAddress(pc);
+
+ maybeStack = uniqueStacks.AppendFrame(
+ stack, UniqueStacks::FrameKey(functionNameOrAddress.get()));
+ if (!maybeStack) {
+ writer.SetFailure("AppendFrame failure");
+ return;
+ }
+ stack = *maybeStack;
+
+ } else if (e.Get().IsLabel()) {
+ numFrames++;
+
+ const char* label = e.Get().GetString();
+ e.Next();
+
+ using FrameFlags = js::ProfilingStackFrame::Flags;
+ uint32_t frameFlags = 0;
+ if (e.Has() && e.Get().IsFrameFlags()) {
+ frameFlags = uint32_t(e.Get().GetUint64());
+ e.Next();
+ }
+
+ bool relevantForJS =
+ frameFlags & uint32_t(FrameFlags::RELEVANT_FOR_JS);
+
+ bool isBaselineInterp =
+ frameFlags & uint32_t(FrameFlags::IS_BLINTERP_FRAME);
+
+ // Copy potential dynamic string fragments into dynStrBuf, so that
+ // dynStrBuf will then contain the entire dynamic string.
+ size_t i = 0;
+ dynStrBuf[0] = '\0';
+ while (e.Has()) {
+ if (e.Get().IsDynamicStringFragment()) {
+ char chars[ProfileBufferEntry::kNumChars];
+ e.Get().CopyCharsInto(chars);
+ for (char c : chars) {
+ if (i < kMaxFrameKeyLength) {
+ dynStrBuf[i] = c;
+ i++;
+ }
+ }
+ e.Next();
+ } else {
+ break;
+ }
+ }
+ dynStrBuf[kMaxFrameKeyLength - 1] = '\0';
+ bool hasDynamicString = (i != 0);
+
+ nsAutoCStringN<1024> frameLabel;
+ if (label[0] != '\0' && hasDynamicString) {
+ if (frameFlags & uint32_t(FrameFlags::STRING_TEMPLATE_METHOD)) {
+ frameLabel.AppendPrintf("%s.%s", label, dynStrBuf.get());
+ } else if (frameFlags &
+ uint32_t(FrameFlags::STRING_TEMPLATE_GETTER)) {
+ frameLabel.AppendPrintf("get %s.%s", label, dynStrBuf.get());
+ } else if (frameFlags &
+ uint32_t(FrameFlags::STRING_TEMPLATE_SETTER)) {
+ frameLabel.AppendPrintf("set %s.%s", label, dynStrBuf.get());
+ } else {
+ frameLabel.AppendPrintf("%s %s", label, dynStrBuf.get());
+ }
+ } else if (hasDynamicString) {
+ frameLabel.Append(dynStrBuf.get());
+ } else {
+ frameLabel.Append(label);
+ }
+
+ uint64_t innerWindowID = 0;
+ if (e.Has() && e.Get().IsInnerWindowID()) {
+ innerWindowID = uint64_t(e.Get().GetUint64());
+ e.Next();
+ }
+
+ Maybe<unsigned> line;
+ if (e.Has() && e.Get().IsLineNumber()) {
+ line = Some(unsigned(e.Get().GetInt()));
+ e.Next();
+ }
+
+ Maybe<unsigned> column;
+ if (e.Has() && e.Get().IsColumnNumber()) {
+ column = Some(unsigned(e.Get().GetInt()));
+ e.Next();
+ }
+
+ Maybe<JS::ProfilingCategoryPair> categoryPair;
+ if (e.Has() && e.Get().IsCategoryPair()) {
+ categoryPair =
+ Some(JS::ProfilingCategoryPair(uint32_t(e.Get().GetInt())));
+ e.Next();
+ }
+
+ maybeStack = uniqueStacks.AppendFrame(
+ stack,
+ UniqueStacks::FrameKey(std::move(frameLabel), relevantForJS,
+ isBaselineInterp, innerWindowID, line,
+ column, categoryPair));
+ if (!maybeStack) {
+ writer.SetFailure("AppendFrame failure");
+ return;
+ }
+ stack = *maybeStack;
+
+ } else if (e.Get().IsJitReturnAddr()) {
+ numFrames++;
+
+ // A JIT frame may expand to multiple frames due to inlining.
+ void* pc = e.Get().GetPtr();
+ const Maybe<Vector<UniqueStacks::FrameKey>>& frameKeys =
+ uniqueStacks.LookupFramesForJITAddressFromBufferPos(
+ pc, entryPosition ? entryPosition : e.CurPos());
+ MOZ_RELEASE_ASSERT(
+ frameKeys,
+ "Attempting to stream samples for a buffer range "
+ "for which we don't have JITFrameInfo?");
+ for (const UniqueStacks::FrameKey& frameKey : *frameKeys) {
+ maybeStack = uniqueStacks.AppendFrame(stack, frameKey);
+ if (!maybeStack) {
+ writer.SetFailure("AppendFrame failure");
+ return;
+ }
+ stack = *maybeStack;
+ }
+
+ e.Next();
+
+ } else {
+ break;
+ }
+ }
+
+ // Even if this stack is considered empty, it contains the root frame,
+ // which needs to be in the JSON output because following "same samples"
+ // may refer to it when reusing this sample.mStack.
+ const Maybe<uint32_t> stackIndex =
+ uniqueStacks.GetOrAddStackIndex(stack);
+ if (!stackIndex) {
+ writer.SetFailure("Can't add unique string for stack");
+ return;
+ }
+
+ // And store that possibly-empty stack in case it's followed by "same
+ // sample" entries.
+ previousStack = *stackIndex;
+ previousStackState = (numFrames == 0)
+ ? ThreadStreamingContext::eStackWasEmpty
+ : ThreadStreamingContext::eStackWasNotEmpty;
+
+ // Even if too old or empty, we did process a sample for this thread id.
+ processedThreadId = threadId;
+
+ // Discard samples that are too old.
+ if (time < aSinceTime) {
+ return;
+ }
+
+ if (numFrames == 0 && runningTimes.IsEmpty()) {
+ // It is possible to have empty stacks if native stackwalking is
+ // disabled. Skip samples with empty stacks, unless we have useful
+ // running times.
+ return;
+ }
+
+ WriteSample(writer, ProfileSample{*stackIndex, time,
+ unresponsiveDuration, runningTimes});
+ }; // End of `ReadStack(EntryGetter&)` lambda.
+
+ if (e.Has() && e.Get().IsTime()) {
+ double time = e.Get().GetDouble();
+ e.Next();
+ // Note: Even if this sample is too old (before aSinceTime), we still
+ // need to read it, so that its frames are in the tables, in case there
+ // is a same-sample following it that would be after aSinceTime, which
+ // would need these frames to be present.
+
+ ReadStack(e, time, 0, Nothing{}, RunningTimes{});
+
+ e.SetLocalProgress("Processed sample");
+ } else if (e.Has() && e.Get().IsTimeBeforeCompactStack()) {
+ double time = e.Get().GetDouble();
+ // Note: Even if this sample is too old (before aSinceTime), we still
+ // need to read it, so that its frames are in the tables, in case there
+ // is a same-sample following it that would be after aSinceTime, which
+ // would need these frames to be present.
+
+ RunningTimes runningTimes;
+ Maybe<double> unresponsiveDuration;
+
+ ProfileChunkedBuffer::BlockIterator it = e.Iterator();
+ for (;;) {
+ ++it;
+ if (it.IsAtEnd()) {
+ break;
+ }
+ ProfileBufferEntryReader er = *it;
+ ProfileBufferEntry::Kind kind =
+ er.ReadObject<ProfileBufferEntry::Kind>();
+
+ // There may be running times before the CompactStack.
+ if (kind == ProfileBufferEntry::Kind::RunningTimes) {
+ er.ReadIntoObject(runningTimes);
+ continue;
+ }
+
+ // There may be an UnresponsiveDurationMs before the CompactStack.
+ if (kind == ProfileBufferEntry::Kind::UnresponsiveDurationMs) {
+ unresponsiveDuration = Some(er.ReadObject<double>());
+ continue;
+ }
+
+ if (kind == ProfileBufferEntry::Kind::CompactStack) {
+ ProfileChunkedBuffer tempBuffer(
+ ProfileChunkedBuffer::ThreadSafety::WithoutMutex,
+ WorkerChunkManager());
+ er.ReadIntoObject(tempBuffer);
+ tempBuffer.Read([&](ProfileChunkedBuffer::Reader* aReader) {
+ MOZ_ASSERT(aReader,
+ "Local ProfileChunkedBuffer cannot be out-of-session");
+ // This is a compact stack, it should only contain one sample.
+ EntryGetter stackEntryGetter(*aReader, aFailureLatch);
+ ReadStack(stackEntryGetter, time,
+ it.CurrentBlockIndex().ConvertToProfileBufferIndex(),
+ unresponsiveDuration, runningTimes);
+ });
+ WorkerChunkManager().Reset(tempBuffer.GetAllChunks());
+ break;
+ }
+
+ if (kind == ProfileBufferEntry::Kind::Marker &&
+ aStreamingContextForMarkers) {
+ StreamMarkerAfterKind(er, *aStreamingContextForMarkers);
+ continue;
+ }
+
+ MOZ_ASSERT(kind >= ProfileBufferEntry::Kind::LEGACY_LIMIT,
+ "There should be no legacy entries between "
+ "TimeBeforeCompactStack and CompactStack");
+ er.SetRemainingBytes(0);
+ }
+
+ e.RestartAfter(it);
+
+ e.SetLocalProgress("Processed compact sample");
+ } else if (e.Has() && e.Get().IsTimeBeforeSameSample()) {
+ if (previousStackState == ThreadStreamingContext::eNoStackYet) {
+ // We don't have any full sample yet, we cannot duplicate a "previous"
+ // one. This should only happen at most once per thread, for the very
+ // first sample.
+ continue;
+ }
+
+ ProfileSample sample;
+
+ // Keep the same `mStack` as previously output.
+ // Note that it may be empty, this is checked below before writing it.
+ sample.mStack = previousStack;
+
+ sample.mTime = e.Get().GetDouble();
+
+ // Ignore samples that are too old.
+ if (sample.mTime < aSinceTime) {
+ e.Next();
+ continue;
+ }
+
+ sample.mResponsiveness = Nothing{};
+
+ sample.mRunningTimes.Clear();
+
+ ProfileChunkedBuffer::BlockIterator it = e.Iterator();
+ for (;;) {
+ ++it;
+ if (it.IsAtEnd()) {
+ break;
+ }
+ ProfileBufferEntryReader er = *it;
+ ProfileBufferEntry::Kind kind =
+ er.ReadObject<ProfileBufferEntry::Kind>();
+
+ // There may be running times before the SameSample.
+ if (kind == ProfileBufferEntry::Kind::RunningTimes) {
+ er.ReadIntoObject(sample.mRunningTimes);
+ continue;
+ }
+
+ if (kind == ProfileBufferEntry::Kind::SameSample) {
+ if (previousStackState == ThreadStreamingContext::eStackWasEmpty &&
+ sample.mRunningTimes.IsEmpty()) {
+ // Skip samples with empty stacks, unless we have useful running
+ // times.
+ break;
+ }
+ WriteSample(writer, sample);
+ break;
+ }
+
+ if (kind == ProfileBufferEntry::Kind::Marker &&
+ aStreamingContextForMarkers) {
+ StreamMarkerAfterKind(er, *aStreamingContextForMarkers);
+ continue;
+ }
+
+ MOZ_ASSERT(kind >= ProfileBufferEntry::Kind::LEGACY_LIMIT,
+ "There should be no legacy entries between "
+ "TimeBeforeSameSample and SameSample");
+ er.SetRemainingBytes(0);
+ }
+
+ e.RestartAfter(it);
+
+ e.SetLocalProgress("Processed repeated sample");
+ } else {
+ ERROR_AND_CONTINUE("expected a Time entry");
+ }
+ }
+
+ return processedThreadId;
+ });
+}
+
+ProfilerThreadId ProfileBuffer::StreamSamplesToJSON(
+ SpliceableJSONWriter& aWriter, ProfilerThreadId aThreadId,
+ double aSinceTime, UniqueStacks& aUniqueStacks,
+ mozilla::ProgressLogger aProgressLogger) const {
+ ThreadStreamingContext::PreviousStackState previousStackState =
+ ThreadStreamingContext::eNoStackYet;
+ uint32_t stack = 0u;
+#ifdef DEBUG
+ int processedCount = 0;
+#endif // DEBUG
+ return DoStreamSamplesAndMarkersToJSON(
+ aWriter.SourceFailureLatch(),
+ [&](ProfilerThreadId aReadThreadId) {
+ Maybe<StreamingParametersForThread> streamingParameters;
+#ifdef DEBUG
+ ++processedCount;
+ MOZ_ASSERT(
+ aThreadId.IsSpecified() ||
+ (processedCount == 1 && aReadThreadId.IsSpecified()),
+ "Unspecified aThreadId should only be used with 1-sample buffer");
+#endif // DEBUG
+ if (!aThreadId.IsSpecified() || aThreadId == aReadThreadId) {
+ streamingParameters.emplace(aWriter, aUniqueStacks,
+ previousStackState, stack);
+ }
+ return streamingParameters;
+ },
+ aSinceTime, /* aStreamingContextForMarkers */ nullptr,
+ std::move(aProgressLogger));
+}
+
+void ProfileBuffer::StreamSamplesAndMarkersToJSON(
+ ProcessStreamingContext& aProcessStreamingContext,
+ mozilla::ProgressLogger aProgressLogger) const {
+ (void)DoStreamSamplesAndMarkersToJSON(
+ aProcessStreamingContext.SourceFailureLatch(),
+ [&](ProfilerThreadId aReadThreadId) {
+ Maybe<StreamingParametersForThread> streamingParameters;
+ ThreadStreamingContext* threadData =
+ aProcessStreamingContext.GetThreadStreamingContext(aReadThreadId);
+ if (threadData) {
+ streamingParameters.emplace(
+ threadData->mSamplesDataWriter, *threadData->mUniqueStacks,
+ threadData->mPreviousStackState, threadData->mPreviousStack);
+ }
+ return streamingParameters;
+ },
+ aProcessStreamingContext.GetSinceTime(), &aProcessStreamingContext,
+ std::move(aProgressLogger));
+}
+
+void ProfileBuffer::AddJITInfoForRange(
+ uint64_t aRangeStart, ProfilerThreadId aThreadId, JSContext* aContext,
+ JITFrameInfo& aJITFrameInfo,
+ mozilla::ProgressLogger aProgressLogger) const {
+ // We can only process JitReturnAddr entries if we have a JSContext.
+ MOZ_RELEASE_ASSERT(aContext);
+
+ aRangeStart = std::max(aRangeStart, BufferRangeStart());
+ aJITFrameInfo.AddInfoForRange(
+ aRangeStart, BufferRangeEnd(), aContext,
+ [&](const std::function<void(void*)>& aJITAddressConsumer) {
+ // Find all JitReturnAddr entries in the given range for the given
+ // thread, and call aJITAddressConsumer with those addresses.
+
+ mEntries.Read([&](ProfileChunkedBuffer::Reader* aReader) {
+ MOZ_ASSERT(aReader,
+ "ProfileChunkedBuffer cannot be out-of-session when "
+ "sampler is running");
+
+ EntryGetter e(*aReader, aJITFrameInfo.LocalFailureLatchSource(),
+ std::move(aProgressLogger), aRangeStart);
+
+ while (true) {
+ // Advance to the next ThreadId entry.
+ while (e.Has() && !e.Get().IsThreadId()) {
+ e.Next();
+ }
+ if (!e.Has()) {
+ break;
+ }
+
+ MOZ_ASSERT(e.Get().IsThreadId());
+ ProfilerThreadId threadId = e.Get().GetThreadId();
+ e.Next();
+
+ // Ignore samples that are for a different thread.
+ if (threadId != aThreadId) {
+ continue;
+ }
+
+ if (e.Has() && e.Get().IsTime()) {
+ // Legacy stack.
+ e.Next();
+ while (e.Has() && !e.Get().IsThreadId()) {
+ if (e.Get().IsJitReturnAddr()) {
+ aJITAddressConsumer(e.Get().GetPtr());
+ }
+ e.Next();
+ }
+ } else if (e.Has() && e.Get().IsTimeBeforeCompactStack()) {
+ // Compact stack.
+ ProfileChunkedBuffer::BlockIterator it = e.Iterator();
+ for (;;) {
+ ++it;
+ if (it.IsAtEnd()) {
+ break;
+ }
+ ProfileBufferEntryReader er = *it;
+ ProfileBufferEntry::Kind kind =
+ er.ReadObject<ProfileBufferEntry::Kind>();
+ if (kind == ProfileBufferEntry::Kind::CompactStack) {
+ ProfileChunkedBuffer tempBuffer(
+ ProfileChunkedBuffer::ThreadSafety::WithoutMutex,
+ WorkerChunkManager());
+ er.ReadIntoObject(tempBuffer);
+ tempBuffer.Read([&](ProfileChunkedBuffer::Reader* aReader) {
+ MOZ_ASSERT(
+ aReader,
+ "Local ProfileChunkedBuffer cannot be out-of-session");
+ EntryGetter stackEntryGetter(
+ *aReader, aJITFrameInfo.LocalFailureLatchSource());
+ while (stackEntryGetter.Has()) {
+ if (stackEntryGetter.Get().IsJitReturnAddr()) {
+ aJITAddressConsumer(stackEntryGetter.Get().GetPtr());
+ }
+ stackEntryGetter.Next();
+ }
+ });
+ WorkerChunkManager().Reset(tempBuffer.GetAllChunks());
+ break;
+ }
+
+ MOZ_ASSERT(kind >= ProfileBufferEntry::Kind::LEGACY_LIMIT,
+ "There should be no legacy entries between "
+ "TimeBeforeCompactStack and CompactStack");
+ er.SetRemainingBytes(0);
+ }
+
+ e.Next();
+ } else if (e.Has() && e.Get().IsTimeBeforeSameSample()) {
+ // Sample index, nothing to do.
+
+ } else {
+ ERROR_AND_CONTINUE("expected a Time entry");
+ }
+ }
+ });
+ });
+}
+
+void ProfileBuffer::StreamMarkersToJSON(
+ SpliceableJSONWriter& aWriter, ProfilerThreadId aThreadId,
+ const TimeStamp& aProcessStartTime, double aSinceTime,
+ UniqueStacks& aUniqueStacks,
+ mozilla::ProgressLogger aProgressLogger) const {
+ mEntries.ReadEach([&](ProfileBufferEntryReader& aER) {
+ auto type = static_cast<ProfileBufferEntry::Kind>(
+ aER.ReadObject<ProfileBufferEntry::KindUnderlyingType>());
+ MOZ_ASSERT(static_cast<ProfileBufferEntry::KindUnderlyingType>(type) <
+ static_cast<ProfileBufferEntry::KindUnderlyingType>(
+ ProfileBufferEntry::Kind::MODERN_LIMIT));
+ if (type == ProfileBufferEntry::Kind::Marker) {
+ mozilla::base_profiler_markers_detail::DeserializeAfterKindAndStream(
+ aER,
+ [&](const ProfilerThreadId& aMarkerThreadId) {
+ return (!aThreadId.IsSpecified() || aMarkerThreadId == aThreadId)
+ ? &aWriter
+ : nullptr;
+ },
+ [&](ProfileChunkedBuffer& aChunkedBuffer) {
+ ProfilerBacktrace backtrace("", &aChunkedBuffer);
+ backtrace.StreamJSON(aWriter, aProcessStartTime, aUniqueStacks);
+ },
+ [&](mozilla::base_profiler_markers_detail::Streaming::DeserializerTag
+ aTag) {
+ size_t payloadSize = aER.RemainingBytes();
+
+ ProfileBufferEntryReader::DoubleSpanOfConstBytes spans =
+ aER.ReadSpans(payloadSize);
+ if (MOZ_LIKELY(spans.IsSingleSpan())) {
+ // Only a single span, we can just refer to it directly
+ // instead of copying it.
+ profiler::ffi::gecko_profiler_serialize_marker_for_tag(
+ aTag, spans.mFirstOrOnly.Elements(), payloadSize, &aWriter);
+ } else {
+ // Two spans, we need to concatenate them by copying.
+ uint8_t* payloadBuffer = new uint8_t[payloadSize];
+ spans.CopyBytesTo(payloadBuffer);
+ profiler::ffi::gecko_profiler_serialize_marker_for_tag(
+ aTag, payloadBuffer, payloadSize, &aWriter);
+ delete[] payloadBuffer;
+ }
+ });
+ } else {
+ // The entry was not a marker, we need to skip to the end.
+ aER.SetRemainingBytes(0);
+ }
+ });
+}
+
+void ProfileBuffer::StreamProfilerOverheadToJSON(
+ SpliceableJSONWriter& aWriter, const TimeStamp& aProcessStartTime,
+ double aSinceTime, mozilla::ProgressLogger aProgressLogger) const {
+ mEntries.Read([&](ProfileChunkedBuffer::Reader* aReader) {
+ MOZ_ASSERT(aReader,
+ "ProfileChunkedBuffer cannot be out-of-session when sampler is "
+ "running");
+
+ EntryGetter e(*aReader, aWriter.SourceFailureLatch(),
+ std::move(aProgressLogger));
+
+ enum Schema : uint32_t {
+ TIME = 0,
+ LOCKING = 1,
+ MARKER_CLEANING = 2,
+ COUNTERS = 3,
+ THREADS = 4
+ };
+
+ aWriter.StartObjectProperty("profilerOverhead");
+ aWriter.StartObjectProperty("samples");
+ // Stream all sampling overhead data. We skip other entries, because we
+ // process them in StreamSamplesToJSON()/etc.
+ {
+ JSONSchemaWriter schema(aWriter);
+ schema.WriteField("time");
+ schema.WriteField("locking");
+ schema.WriteField("expiredMarkerCleaning");
+ schema.WriteField("counters");
+ schema.WriteField("threads");
+ }
+
+ aWriter.StartArrayProperty("data");
+ double firstTime = 0.0;
+ double lastTime = 0.0;
+ ProfilerStats intervals, overheads, lockings, cleanings, counters, threads;
+ while (e.Has()) {
+ // valid sequence: ProfilerOverheadTime, ProfilerOverheadDuration * 4
+ if (e.Get().IsProfilerOverheadTime()) {
+ double time = e.Get().GetDouble();
+ if (time >= aSinceTime) {
+ e.Next();
+ if (!e.Has() || !e.Get().IsProfilerOverheadDuration()) {
+ ERROR_AND_CONTINUE(
+ "expected a ProfilerOverheadDuration entry after "
+ "ProfilerOverheadTime");
+ }
+ double locking = e.Get().GetDouble();
+ e.Next();
+ if (!e.Has() || !e.Get().IsProfilerOverheadDuration()) {
+ ERROR_AND_CONTINUE(
+ "expected a ProfilerOverheadDuration entry after "
+ "ProfilerOverheadTime,ProfilerOverheadDuration");
+ }
+ double cleaning = e.Get().GetDouble();
+ e.Next();
+ if (!e.Has() || !e.Get().IsProfilerOverheadDuration()) {
+ ERROR_AND_CONTINUE(
+ "expected a ProfilerOverheadDuration entry after "
+ "ProfilerOverheadTime,ProfilerOverheadDuration*2");
+ }
+ double counter = e.Get().GetDouble();
+ e.Next();
+ if (!e.Has() || !e.Get().IsProfilerOverheadDuration()) {
+ ERROR_AND_CONTINUE(
+ "expected a ProfilerOverheadDuration entry after "
+ "ProfilerOverheadTime,ProfilerOverheadDuration*3");
+ }
+ double thread = e.Get().GetDouble();
+
+ if (firstTime == 0.0) {
+ firstTime = time;
+ } else {
+ // Note that we'll have 1 fewer interval than other numbers (because
+ // we need both ends of an interval to know its duration). The final
+ // difference should be insignificant over the expected many
+ // thousands of iterations.
+ intervals.Count(time - lastTime);
+ }
+ lastTime = time;
+ overheads.Count(locking + cleaning + counter + thread);
+ lockings.Count(locking);
+ cleanings.Count(cleaning);
+ counters.Count(counter);
+ threads.Count(thread);
+
+ AutoArraySchemaWriter writer(aWriter);
+ writer.TimeMsElement(TIME, time);
+ writer.DoubleElement(LOCKING, locking);
+ writer.DoubleElement(MARKER_CLEANING, cleaning);
+ writer.DoubleElement(COUNTERS, counter);
+ writer.DoubleElement(THREADS, thread);
+ }
+ }
+ e.Next();
+ }
+ aWriter.EndArray(); // data
+ aWriter.EndObject(); // samples
+
+ // Only output statistics if there is at least one full interval (and
+ // therefore at least two samplings.)
+ if (intervals.n > 0) {
+ aWriter.StartObjectProperty("statistics");
+ aWriter.DoubleProperty("profiledDuration", lastTime - firstTime);
+ aWriter.IntProperty("samplingCount", overheads.n);
+ aWriter.DoubleProperty("overheadDurations", overheads.sum);
+ aWriter.DoubleProperty("overheadPercentage",
+ overheads.sum / (lastTime - firstTime));
+#define PROFILER_STATS(name, var) \
+ aWriter.DoubleProperty("mean" name, (var).sum / (var).n); \
+ aWriter.DoubleProperty("min" name, (var).min); \
+ aWriter.DoubleProperty("max" name, (var).max);
+ PROFILER_STATS("Interval", intervals);
+ PROFILER_STATS("Overhead", overheads);
+ PROFILER_STATS("Lockings", lockings);
+ PROFILER_STATS("Cleaning", cleanings);
+ PROFILER_STATS("Counter", counters);
+ PROFILER_STATS("Thread", threads);
+#undef PROFILER_STATS
+ aWriter.EndObject(); // statistics
+ }
+ aWriter.EndObject(); // profilerOverhead
+ });
+}
+
+struct CounterKeyedSample {
+ double mTime;
+ uint64_t mNumber;
+ int64_t mCount;
+};
+
+using CounterKeyedSamples = Vector<CounterKeyedSample>;
+
+static LazyLogModule sFuzzyfoxLog("Fuzzyfox");
+
+using CounterMap = HashMap<uint64_t, CounterKeyedSamples>;
+
+// HashMap lookup, if not found, a default value is inserted.
+// Returns reference to (existing or new) value inside the HashMap.
+template <typename HashM, typename Key>
+static auto& LookupOrAdd(HashM& aMap, Key&& aKey) {
+ auto addPtr = aMap.lookupForAdd(aKey);
+ if (!addPtr) {
+ MOZ_RELEASE_ASSERT(aMap.add(addPtr, std::forward<Key>(aKey),
+ typename HashM::Entry::ValueType{}));
+ MOZ_ASSERT(!!addPtr);
+ }
+ return addPtr->value();
+}
+
+void ProfileBuffer::StreamCountersToJSON(
+ SpliceableJSONWriter& aWriter, const TimeStamp& aProcessStartTime,
+ double aSinceTime, mozilla::ProgressLogger aProgressLogger) const {
+ // Because this is a format entirely internal to the Profiler, any parsing
+ // error indicates a bug in the ProfileBuffer writing or the parser itself,
+ // or possibly flaky hardware.
+
+ mEntries.Read([&](ProfileChunkedBuffer::Reader* aReader) {
+ MOZ_ASSERT(aReader,
+ "ProfileChunkedBuffer cannot be out-of-session when sampler is "
+ "running");
+
+ EntryGetter e(*aReader, aWriter.SourceFailureLatch(),
+ std::move(aProgressLogger));
+
+ enum Schema : uint32_t { TIME = 0, COUNT = 1, NUMBER = 2 };
+
+ // Stream all counters. We skip other entries, because we process them in
+ // StreamSamplesToJSON()/etc.
+ //
+ // Valid sequence in the buffer:
+ // CounterID
+ // Time
+ // ( CounterKey Count Number? )*
+ //
+ // And the JSON (example):
+ // "counters": {
+ // "name": "malloc",
+ // "category": "Memory",
+ // "description": "Amount of allocated memory",
+ // "sample_groups": {
+ // "id": 0,
+ // "samples": {
+ // "schema": {"time": 0, "number": 1, "count": 2},
+ // "data": [
+ // [
+ // 16117.033968000002,
+ // 2446216,
+ // 6801320
+ // ],
+ // [
+ // 16118.037638,
+ // 2446216,
+ // 6801320
+ // ],
+ // ],
+ // }
+ // }
+ // },
+
+ // Build the map of counters and populate it
+ HashMap<void*, CounterMap> counters;
+
+ while (e.Has()) {
+ // skip all non-Counters, including if we start in the middle of a counter
+ if (e.Get().IsCounterId()) {
+ void* id = e.Get().GetPtr();
+ CounterMap& counter = LookupOrAdd(counters, id);
+ e.Next();
+ if (!e.Has() || !e.Get().IsTime()) {
+ ERROR_AND_CONTINUE("expected a Time entry");
+ }
+ double time = e.Get().GetDouble();
+ e.Next();
+ if (time >= aSinceTime) {
+ while (e.Has() && e.Get().IsCounterKey()) {
+ uint64_t key = e.Get().GetUint64();
+ CounterKeyedSamples& data = LookupOrAdd(counter, key);
+ e.Next();
+ if (!e.Has() || !e.Get().IsCount()) {
+ ERROR_AND_CONTINUE("expected a Count entry");
+ }
+ int64_t count = e.Get().GetUint64();
+ e.Next();
+ uint64_t number;
+ if (!e.Has() || !e.Get().IsNumber()) {
+ number = 0;
+ } else {
+ number = e.Get().GetInt64();
+ e.Next();
+ }
+ CounterKeyedSample sample = {time, number, count};
+ MOZ_RELEASE_ASSERT(data.append(sample));
+ }
+ } else {
+ // skip counter sample - only need to skip the initial counter
+ // id, then let the loop at the top skip the rest
+ }
+ } else {
+ e.Next();
+ }
+ }
+ // we have a map of a map of counter entries; dump them to JSON
+ if (counters.count() == 0) {
+ return;
+ }
+
+ aWriter.StartArrayProperty("counters");
+ for (auto iter = counters.iter(); !iter.done(); iter.next()) {
+ CounterMap& counter = iter.get().value();
+ const BaseProfilerCount* base_counter =
+ static_cast<const BaseProfilerCount*>(iter.get().key());
+
+ aWriter.Start();
+ aWriter.StringProperty("name", MakeStringSpan(base_counter->mLabel));
+ aWriter.StringProperty("category",
+ MakeStringSpan(base_counter->mCategory));
+ aWriter.StringProperty("description",
+ MakeStringSpan(base_counter->mDescription));
+
+ aWriter.StartArrayProperty("sample_groups");
+ for (auto counter_iter = counter.iter(); !counter_iter.done();
+ counter_iter.next()) {
+ CounterKeyedSamples& samples = counter_iter.get().value();
+ uint64_t key = counter_iter.get().key();
+
+ size_t size = samples.length();
+ if (size == 0) {
+ continue;
+ }
+
+ bool hasNumber = false;
+ for (size_t i = 0; i < size; i++) {
+ if (samples[i].mNumber != 0) {
+ hasNumber = true;
+ break;
+ }
+ }
+
+ aWriter.StartObjectElement();
+ {
+ aWriter.IntProperty("id", static_cast<int64_t>(key));
+ aWriter.StartObjectProperty("samples");
+ {
+ JSONSchemaWriter schema(aWriter);
+ schema.WriteField("time");
+ schema.WriteField("count");
+ if (hasNumber) {
+ schema.WriteField("number");
+ }
+ }
+
+ aWriter.StartArrayProperty("data");
+ double previousSkippedTime = 0.0;
+ uint64_t previousNumber = 0;
+ int64_t previousCount = 0;
+ for (size_t i = 0; i < size; i++) {
+ // Encode as deltas, and only encode if different than the previous
+ // or next sample; Always write the first and last samples.
+ if (i == 0 || i == size - 1 ||
+ samples[i].mNumber != previousNumber ||
+ samples[i].mCount != previousCount ||
+ // Ensure we ouput the first 0 before skipping samples.
+ (i >= 2 && (samples[i - 2].mNumber != previousNumber ||
+ samples[i - 2].mCount != previousCount))) {
+ if (i != 0 && samples[i].mTime >= samples[i - 1].mTime) {
+ MOZ_LOG(sFuzzyfoxLog, mozilla::LogLevel::Error,
+ ("Fuzzyfox Profiler Assertion: %f >= %f",
+ samples[i].mTime, samples[i - 1].mTime));
+ }
+ MOZ_ASSERT(i == 0 || samples[i].mTime >= samples[i - 1].mTime);
+ MOZ_ASSERT(samples[i].mNumber >= previousNumber);
+ MOZ_ASSERT(samples[i].mNumber - previousNumber <=
+ uint64_t(std::numeric_limits<int64_t>::max()));
+
+ int64_t numberDelta =
+ static_cast<int64_t>(samples[i].mNumber - previousNumber);
+ int64_t countDelta = samples[i].mCount - previousCount;
+
+ if (previousSkippedTime != 0.0 &&
+ (numberDelta != 0 || countDelta != 0)) {
+ // Write the last skipped sample, unless the new one is all
+ // zeroes (that'd be redundant) This is useful to know when a
+ // certain value was last sampled, so that the front-end graph
+ // will be more correct.
+ AutoArraySchemaWriter writer(aWriter);
+ writer.TimeMsElement(TIME, previousSkippedTime);
+ // The deltas are effectively zeroes, since no change happened
+ // between the last actually-written sample and the last skipped
+ // one.
+ writer.IntElement(COUNT, 0);
+ if (hasNumber) {
+ writer.IntElement(NUMBER, 0);
+ }
+ }
+
+ AutoArraySchemaWriter writer(aWriter);
+ writer.TimeMsElement(TIME, samples[i].mTime);
+ writer.IntElement(COUNT, countDelta);
+ if (hasNumber) {
+ writer.IntElement(NUMBER, numberDelta);
+ }
+
+ previousSkippedTime = 0.0;
+ previousNumber = samples[i].mNumber;
+ previousCount = samples[i].mCount;
+ } else {
+ previousSkippedTime = samples[i].mTime;
+ }
+ }
+ aWriter.EndArray(); // data
+ aWriter.EndObject(); // samples
+ }
+ aWriter.EndObject(); // sample_groups item
+ }
+ aWriter.EndArray(); // sample groups
+ aWriter.End(); // for each counter
+ }
+ aWriter.EndArray(); // counters
+ });
+}
+
+#undef ERROR_AND_CONTINUE
+
+static void AddPausedRange(SpliceableJSONWriter& aWriter, const char* aReason,
+ const Maybe<double>& aStartTime,
+ const Maybe<double>& aEndTime) {
+ aWriter.Start();
+ if (aStartTime) {
+ aWriter.TimeDoubleMsProperty("startTime", *aStartTime);
+ } else {
+ aWriter.NullProperty("startTime");
+ }
+ if (aEndTime) {
+ aWriter.TimeDoubleMsProperty("endTime", *aEndTime);
+ } else {
+ aWriter.NullProperty("endTime");
+ }
+ aWriter.StringProperty("reason", MakeStringSpan(aReason));
+ aWriter.End();
+}
+
+void ProfileBuffer::StreamPausedRangesToJSON(
+ SpliceableJSONWriter& aWriter, double aSinceTime,
+ mozilla::ProgressLogger aProgressLogger) const {
+ mEntries.Read([&](ProfileChunkedBuffer::Reader* aReader) {
+ MOZ_ASSERT(aReader,
+ "ProfileChunkedBuffer cannot be out-of-session when sampler is "
+ "running");
+
+ EntryGetter e(*aReader, aWriter.SourceFailureLatch(),
+ aProgressLogger.CreateSubLoggerFromTo(
+ 1_pc, "Streaming pauses...", 99_pc, "Streamed pauses"));
+
+ Maybe<double> currentPauseStartTime;
+ Maybe<double> currentCollectionStartTime;
+
+ while (e.Has()) {
+ if (e.Get().IsPause()) {
+ currentPauseStartTime = Some(e.Get().GetDouble());
+ } else if (e.Get().IsResume()) {
+ AddPausedRange(aWriter, "profiler-paused", currentPauseStartTime,
+ Some(e.Get().GetDouble()));
+ currentPauseStartTime = Nothing();
+ } else if (e.Get().IsCollectionStart()) {
+ currentCollectionStartTime = Some(e.Get().GetDouble());
+ } else if (e.Get().IsCollectionEnd()) {
+ AddPausedRange(aWriter, "collecting", currentCollectionStartTime,
+ Some(e.Get().GetDouble()));
+ currentCollectionStartTime = Nothing();
+ }
+ e.Next();
+ }
+
+ if (currentPauseStartTime) {
+ AddPausedRange(aWriter, "profiler-paused", currentPauseStartTime,
+ Nothing());
+ }
+ if (currentCollectionStartTime) {
+ AddPausedRange(aWriter, "collecting", currentCollectionStartTime,
+ Nothing());
+ }
+ });
+}
+
+bool ProfileBuffer::DuplicateLastSample(ProfilerThreadId aThreadId,
+ double aSampleTimeMs,
+ Maybe<uint64_t>& aLastSample,
+ const RunningTimes& aRunningTimes) {
+ if (!aLastSample) {
+ return false;
+ }
+
+ if (mEntries.IsIndexInCurrentChunk(ProfileBufferIndex{*aLastSample})) {
+ // The last (fully-written) sample is in this chunk, we can refer to it.
+
+ // Note that between now and when we write the SameSample below, another
+ // chunk could have been started, so the SameSample will in fact refer to a
+ // block in a previous chunk. This is okay, because:
+ // - When serializing to JSON, if that chunk is still there, we'll still be
+ // able to find that old stack, so nothing will be lost.
+ // - If unfortunately that chunk has been destroyed, we will lose this
+ // sample. But this will only happen to the first sample (per thread) in
+ // in the whole JSON output, because the next time we're here to duplicate
+ // the same sample again, IsIndexInCurrentChunk will say `false` and we
+ // will fall back to the normal copy or even re-sample. Losing the first
+ // sample out of many in a whole recording is acceptable.
+ //
+ // |---| = chunk, S = Sample, D = Duplicate, s = same sample
+ // |---S-s-s--| |s-D--s--s-| |s-D--s---s|
+ // Later, the first chunk is destroyed/recycled:
+ // |s-D--s--s-| |s-D--s---s| |-...
+ // Output: ^ ^ ^ ^
+ // `-|--|-------|--- Same but no previous -> lost.
+ // `--|-------|--- Full duplicate sample.
+ // `-------|--- Same with previous -> okay.
+ // `--- Same but now we have a previous -> okay!
+
+ AUTO_PROFILER_STATS(DuplicateLastSample_SameSample);
+
+ // Add the thread id first. We don't update `aLastSample` because we are not
+ // writing a full sample.
+ (void)AddThreadIdEntry(aThreadId);
+
+ // Copy the new time, to be followed by a SameSample.
+ AddEntry(ProfileBufferEntry::TimeBeforeSameSample(aSampleTimeMs));
+
+ // Add running times if they have data.
+ if (!aRunningTimes.IsEmpty()) {
+ mEntries.PutObjects(ProfileBufferEntry::Kind::RunningTimes,
+ aRunningTimes);
+ }
+
+ // Finish with a SameSample entry.
+ mEntries.PutObjects(ProfileBufferEntry::Kind::SameSample);
+
+ return true;
+ }
+
+ AUTO_PROFILER_STATS(DuplicateLastSample_copy);
+
+ ProfileChunkedBuffer tempBuffer(
+ ProfileChunkedBuffer::ThreadSafety::WithoutMutex, WorkerChunkManager());
+
+ auto retrieveWorkerChunk = MakeScopeExit(
+ [&]() { WorkerChunkManager().Reset(tempBuffer.GetAllChunks()); });
+
+ const bool ok = mEntries.Read([&](ProfileChunkedBuffer::Reader* aReader) {
+ MOZ_ASSERT(aReader,
+ "ProfileChunkedBuffer cannot be out-of-session when sampler is "
+ "running");
+
+ // DuplicateLastSample is only called during profiling, so we don't need a
+ // progress logger (only useful when capturing the final profile).
+ EntryGetter e(*aReader, mozilla::FailureLatchInfallibleSource::Singleton(),
+ ProgressLogger{}, *aLastSample);
+
+ if (e.CurPos() != *aLastSample) {
+ // The last sample is no longer within the buffer range, so we cannot
+ // use it. Reset the stored buffer position to Nothing().
+ aLastSample.reset();
+ return false;
+ }
+
+ MOZ_RELEASE_ASSERT(e.Has() && e.Get().IsThreadId() &&
+ e.Get().GetThreadId() == aThreadId);
+
+ e.Next();
+
+ // Go through the whole entry and duplicate it, until we find the next
+ // one.
+ while (e.Has()) {
+ switch (e.Get().GetKind()) {
+ case ProfileBufferEntry::Kind::Pause:
+ case ProfileBufferEntry::Kind::Resume:
+ case ProfileBufferEntry::Kind::PauseSampling:
+ case ProfileBufferEntry::Kind::ResumeSampling:
+ case ProfileBufferEntry::Kind::CollectionStart:
+ case ProfileBufferEntry::Kind::CollectionEnd:
+ case ProfileBufferEntry::Kind::ThreadId:
+ case ProfileBufferEntry::Kind::TimeBeforeSameSample:
+ // We're done.
+ return true;
+ case ProfileBufferEntry::Kind::Time:
+ // Copy with new time
+ AddEntry(tempBuffer, ProfileBufferEntry::Time(aSampleTimeMs));
+ break;
+ case ProfileBufferEntry::Kind::TimeBeforeCompactStack: {
+ // Copy with new time, followed by a compact stack.
+ AddEntry(tempBuffer,
+ ProfileBufferEntry::TimeBeforeCompactStack(aSampleTimeMs));
+
+ // Add running times if they have data.
+ if (!aRunningTimes.IsEmpty()) {
+ tempBuffer.PutObjects(ProfileBufferEntry::Kind::RunningTimes,
+ aRunningTimes);
+ }
+
+ // The `CompactStack` *must* be present afterwards, but may not
+ // immediately follow `TimeBeforeCompactStack` (e.g., some markers
+ // could be written in-between), so we need to look for it in the
+ // following entries.
+ ProfileChunkedBuffer::BlockIterator it = e.Iterator();
+ for (;;) {
+ ++it;
+ if (it.IsAtEnd()) {
+ break;
+ }
+ ProfileBufferEntryReader er = *it;
+ auto kind = static_cast<ProfileBufferEntry::Kind>(
+ er.ReadObject<ProfileBufferEntry::KindUnderlyingType>());
+ MOZ_ASSERT(
+ static_cast<ProfileBufferEntry::KindUnderlyingType>(kind) <
+ static_cast<ProfileBufferEntry::KindUnderlyingType>(
+ ProfileBufferEntry::Kind::MODERN_LIMIT));
+ if (kind == ProfileBufferEntry::Kind::CompactStack) {
+ // Found our CompactStack, just make a copy of the whole entry.
+ er = *it;
+ auto bytes = er.RemainingBytes();
+ MOZ_ASSERT(bytes <
+ ProfileBufferChunkManager::scExpectedMaximumStackSize);
+ tempBuffer.Put(bytes, [&](Maybe<ProfileBufferEntryWriter>& aEW) {
+ MOZ_ASSERT(aEW.isSome(), "tempBuffer cannot be out-of-session");
+ aEW->WriteFromReader(er, bytes);
+ });
+ // CompactStack marks the end, we're done.
+ break;
+ }
+
+ MOZ_ASSERT(kind >= ProfileBufferEntry::Kind::LEGACY_LIMIT,
+ "There should be no legacy entries between "
+ "TimeBeforeCompactStack and CompactStack");
+ er.SetRemainingBytes(0);
+ // Here, we have encountered a non-legacy entry that was not the
+ // CompactStack we're looking for; just continue the search...
+ }
+ // We're done.
+ return true;
+ }
+ case ProfileBufferEntry::Kind::CounterKey:
+ case ProfileBufferEntry::Kind::Number:
+ case ProfileBufferEntry::Kind::Count:
+ // Don't copy anything not part of a thread's stack sample
+ break;
+ case ProfileBufferEntry::Kind::CounterId:
+ // CounterId is normally followed by Time - if so, we'd like
+ // to skip it. If we duplicate Time, it won't hurt anything, just
+ // waste buffer space (and this can happen if the CounterId has
+ // fallen off the end of the buffer, but Time (and Number/Count)
+ // are still in the buffer).
+ e.Next();
+ if (e.Has() && e.Get().GetKind() != ProfileBufferEntry::Kind::Time) {
+ // this would only happen if there was an invalid sequence
+ // in the buffer. Don't skip it.
+ continue;
+ }
+ // we've skipped Time
+ break;
+ case ProfileBufferEntry::Kind::ProfilerOverheadTime:
+ // ProfilerOverheadTime is normally followed by
+ // ProfilerOverheadDuration*4 - if so, we'd like to skip it. Don't
+ // duplicate, as we are in the middle of a sampling and will soon
+ // capture its own overhead.
+ e.Next();
+ // A missing Time would only happen if there was an invalid
+ // sequence in the buffer. Don't skip unexpected entry.
+ if (e.Has() &&
+ e.Get().GetKind() !=
+ ProfileBufferEntry::Kind::ProfilerOverheadDuration) {
+ continue;
+ }
+ e.Next();
+ if (e.Has() &&
+ e.Get().GetKind() !=
+ ProfileBufferEntry::Kind::ProfilerOverheadDuration) {
+ continue;
+ }
+ e.Next();
+ if (e.Has() &&
+ e.Get().GetKind() !=
+ ProfileBufferEntry::Kind::ProfilerOverheadDuration) {
+ continue;
+ }
+ e.Next();
+ if (e.Has() &&
+ e.Get().GetKind() !=
+ ProfileBufferEntry::Kind::ProfilerOverheadDuration) {
+ continue;
+ }
+ // we've skipped ProfilerOverheadTime and
+ // ProfilerOverheadDuration*4.
+ break;
+ default: {
+ // Copy anything else we don't know about.
+ AddEntry(tempBuffer, e.Get());
+ break;
+ }
+ }
+ e.Next();
+ }
+ return true;
+ });
+
+ if (!ok) {
+ return false;
+ }
+
+ // If the buffer was big enough, there won't be any cleared blocks.
+ if (tempBuffer.GetState().mClearedBlockCount != 0) {
+ // No need to try to read stack again as it won't fit. Reset the stored
+ // buffer position to Nothing().
+ aLastSample.reset();
+ return false;
+ }
+
+ aLastSample = Some(AddThreadIdEntry(aThreadId));
+
+ mEntries.AppendContents(tempBuffer);
+
+ return true;
+}
+
+void ProfileBuffer::DiscardSamplesBeforeTime(double aTime) {
+ // This function does nothing!
+ // The duration limit will be removed from Firefox, see bug 1632365.
+ Unused << aTime;
+}
+
+// END ProfileBuffer
+////////////////////////////////////////////////////////////////////////
diff --git a/tools/profiler/core/ProfileBufferEntry.h b/tools/profiler/core/ProfileBufferEntry.h
new file mode 100644
index 0000000000..bfee4923a3
--- /dev/null
+++ b/tools/profiler/core/ProfileBufferEntry.h
@@ -0,0 +1,532 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef ProfileBufferEntry_h
+#define ProfileBufferEntry_h
+
+#include <cstdint>
+#include <cstdlib>
+#include <functional>
+#include <utility>
+#include <type_traits>
+#include "gtest/MozGtestFriend.h"
+#include "js/ProfilingCategory.h"
+#include "mozilla/Attributes.h"
+#include "mozilla/HashFunctions.h"
+#include "mozilla/HashTable.h"
+#include "mozilla/Maybe.h"
+#include "mozilla/ProfileBufferEntryKinds.h"
+#include "mozilla/ProfileJSONWriter.h"
+#include "mozilla/ProfilerUtils.h"
+#include "mozilla/UniquePtrExtensions.h"
+#include "mozilla/Variant.h"
+#include "mozilla/Vector.h"
+#include "nsString.h"
+
+class ProfilerCodeAddressService;
+struct JSContext;
+
+class ProfileBufferEntry {
+ public:
+ using KindUnderlyingType =
+ std::underlying_type_t<::mozilla::ProfileBufferEntryKind>;
+ using Kind = mozilla::ProfileBufferEntryKind;
+
+ ProfileBufferEntry();
+
+ static constexpr size_t kNumChars = mozilla::ProfileBufferEntryNumChars;
+
+ private:
+ // aString must be a static string.
+ ProfileBufferEntry(Kind aKind, const char* aString);
+ ProfileBufferEntry(Kind aKind, char aChars[kNumChars]);
+ ProfileBufferEntry(Kind aKind, void* aPtr);
+ ProfileBufferEntry(Kind aKind, double aDouble);
+ ProfileBufferEntry(Kind aKind, int64_t aInt64);
+ ProfileBufferEntry(Kind aKind, uint64_t aUint64);
+ ProfileBufferEntry(Kind aKind, int aInt);
+ ProfileBufferEntry(Kind aKind, ProfilerThreadId aThreadId);
+
+ public:
+#define CTOR(KIND, TYPE, SIZE) \
+ static ProfileBufferEntry KIND(TYPE aVal) { \
+ return ProfileBufferEntry(Kind::KIND, aVal); \
+ }
+ FOR_EACH_PROFILE_BUFFER_ENTRY_KIND(CTOR)
+#undef CTOR
+
+ Kind GetKind() const { return mKind; }
+
+#define IS_KIND(KIND, TYPE, SIZE) \
+ bool Is##KIND() const { return mKind == Kind::KIND; }
+ FOR_EACH_PROFILE_BUFFER_ENTRY_KIND(IS_KIND)
+#undef IS_KIND
+
+ private:
+ FRIEND_TEST(ThreadProfile, InsertOneEntry);
+ FRIEND_TEST(ThreadProfile, InsertOneEntryWithTinyBuffer);
+ FRIEND_TEST(ThreadProfile, InsertEntriesNoWrap);
+ FRIEND_TEST(ThreadProfile, InsertEntriesWrap);
+ FRIEND_TEST(ThreadProfile, MemoryMeasure);
+ friend class ProfileBuffer;
+
+ Kind mKind;
+ uint8_t mStorage[kNumChars];
+
+ const char* GetString() const;
+ void* GetPtr() const;
+ double GetDouble() const;
+ int GetInt() const;
+ int64_t GetInt64() const;
+ uint64_t GetUint64() const;
+ ProfilerThreadId GetThreadId() const;
+ void CopyCharsInto(char (&aOutArray)[kNumChars]) const;
+};
+
+// Packed layout: 1 byte for the tag + 8 bytes for the value.
+static_assert(sizeof(ProfileBufferEntry) == 9, "bad ProfileBufferEntry size");
+
+// Contains all the information about JIT frames that is needed to stream stack
+// frames for JitReturnAddr entries in the profiler buffer.
+// Every return address (void*) is mapped to one or more JITFrameKeys, and
+// every JITFrameKey is mapped to a JSON string for that frame.
+// mRangeStart and mRangeEnd describe the range in the buffer for which this
+// mapping is valid. Only JitReturnAddr entries within that buffer range can be
+// processed using this JITFrameInfoForBufferRange object.
+struct JITFrameInfoForBufferRange final {
+ JITFrameInfoForBufferRange Clone() const;
+
+ uint64_t mRangeStart;
+ uint64_t mRangeEnd; // mRangeEnd marks the first invalid index.
+
+ struct JITFrameKey {
+ bool operator==(const JITFrameKey& aOther) const {
+ return mCanonicalAddress == aOther.mCanonicalAddress &&
+ mDepth == aOther.mDepth;
+ }
+ bool operator!=(const JITFrameKey& aOther) const {
+ return !(*this == aOther);
+ }
+
+ void* mCanonicalAddress;
+ uint32_t mDepth;
+ };
+ struct JITFrameKeyHasher {
+ using Lookup = JITFrameKey;
+
+ static mozilla::HashNumber hash(const JITFrameKey& aLookup) {
+ mozilla::HashNumber hash = 0;
+ hash = mozilla::AddToHash(hash, aLookup.mCanonicalAddress);
+ hash = mozilla::AddToHash(hash, aLookup.mDepth);
+ return hash;
+ }
+
+ static bool match(const JITFrameKey& aKey, const JITFrameKey& aLookup) {
+ return aKey == aLookup;
+ }
+
+ static void rekey(JITFrameKey& aKey, const JITFrameKey& aNewKey) {
+ aKey = aNewKey;
+ }
+ };
+
+ using JITAddressToJITFramesMap =
+ mozilla::HashMap<void*, mozilla::Vector<JITFrameKey>>;
+ JITAddressToJITFramesMap mJITAddressToJITFramesMap;
+ using JITFrameToFrameJSONMap =
+ mozilla::HashMap<JITFrameKey, nsCString, JITFrameKeyHasher>;
+ JITFrameToFrameJSONMap mJITFrameToFrameJSONMap;
+};
+
+// Contains JITFrameInfoForBufferRange objects for multiple profiler buffer
+// ranges.
+class JITFrameInfo final {
+ public:
+ JITFrameInfo()
+ : mUniqueStrings(mozilla::MakeUniqueFallible<UniqueJSONStrings>(
+ mLocalFailureLatchSource)) {
+ if (!mUniqueStrings) {
+ mLocalFailureLatchSource.SetFailure(
+ "OOM in JITFrameInfo allocating mUniqueStrings");
+ }
+ }
+
+ MOZ_IMPLICIT JITFrameInfo(const JITFrameInfo& aOther,
+ mozilla::ProgressLogger aProgressLogger);
+
+ // Creates a new JITFrameInfoForBufferRange object in mRanges by looking up
+ // information about the provided JIT return addresses using aCx.
+ // Addresses are provided like this:
+ // The caller of AddInfoForRange supplies a function in aJITAddressProvider.
+ // This function will be called once, synchronously, with an
+ // aJITAddressConsumer argument, which is a function that needs to be called
+ // for every address. That function can be called multiple times for the same
+ // address.
+ void AddInfoForRange(
+ uint64_t aRangeStart, uint64_t aRangeEnd, JSContext* aCx,
+ const std::function<void(const std::function<void(void*)>&)>&
+ aJITAddressProvider);
+
+ // Returns whether the information stored in this object is still relevant
+ // for any entries in the buffer.
+ bool HasExpired(uint64_t aCurrentBufferRangeStart) const {
+ if (mRanges.empty()) {
+ // No information means no relevant information. Allow this object to be
+ // discarded.
+ return true;
+ }
+ return mRanges.back().mRangeEnd <= aCurrentBufferRangeStart;
+ }
+
+ mozilla::FailureLatch& LocalFailureLatchSource() {
+ return mLocalFailureLatchSource;
+ }
+
+ // The encapsulated data points at the local FailureLatch, so on the way out
+ // they must be given a new external FailureLatch to start using instead.
+ mozilla::Vector<JITFrameInfoForBufferRange>&& MoveRangesWithNewFailureLatch(
+ mozilla::FailureLatch& aFailureLatch) &&;
+ mozilla::UniquePtr<UniqueJSONStrings>&& MoveUniqueStringsWithNewFailureLatch(
+ mozilla::FailureLatch& aFailureLatch) &&;
+
+ private:
+ // JITFrameInfo's may exist during profiling, so it carries its own fallible
+ // FailureLatch. If&when the data below is finally extracted, any error is
+ // forwarded to the caller.
+ mozilla::FailureLatchSource mLocalFailureLatchSource;
+
+ // The array of ranges of JIT frame information, sorted by buffer position.
+ // Ranges are non-overlapping.
+ // The JSON of the cached frames can contain string indexes, which refer
+ // to strings in mUniqueStrings.
+ mozilla::Vector<JITFrameInfoForBufferRange> mRanges;
+
+ // The string table which contains strings used in the frame JSON that's
+ // cached in mRanges.
+ mozilla::UniquePtr<UniqueJSONStrings> mUniqueStrings;
+};
+
+class UniqueStacks final : public mozilla::FailureLatch {
+ public:
+ struct FrameKey {
+ explicit FrameKey(const char* aLocation)
+ : mData(NormalFrameData{nsCString(aLocation), false, false, 0,
+ mozilla::Nothing(), mozilla::Nothing()}) {}
+
+ FrameKey(nsCString&& aLocation, bool aRelevantForJS, bool aBaselineInterp,
+ uint64_t aInnerWindowID, const mozilla::Maybe<unsigned>& aLine,
+ const mozilla::Maybe<unsigned>& aColumn,
+ const mozilla::Maybe<JS::ProfilingCategoryPair>& aCategoryPair)
+ : mData(NormalFrameData{aLocation, aRelevantForJS, aBaselineInterp,
+ aInnerWindowID, aLine, aColumn,
+ aCategoryPair}) {}
+
+ FrameKey(void* aJITAddress, uint32_t aJITDepth, uint32_t aRangeIndex)
+ : mData(JITFrameData{aJITAddress, aJITDepth, aRangeIndex}) {}
+
+ FrameKey(const FrameKey& aToCopy) = default;
+
+ uint32_t Hash() const;
+ bool operator==(const FrameKey& aOther) const {
+ return mData == aOther.mData;
+ }
+
+ struct NormalFrameData {
+ bool operator==(const NormalFrameData& aOther) const;
+
+ nsCString mLocation;
+ bool mRelevantForJS;
+ bool mBaselineInterp;
+ uint64_t mInnerWindowID;
+ mozilla::Maybe<unsigned> mLine;
+ mozilla::Maybe<unsigned> mColumn;
+ mozilla::Maybe<JS::ProfilingCategoryPair> mCategoryPair;
+ };
+ struct JITFrameData {
+ bool operator==(const JITFrameData& aOther) const;
+
+ void* mCanonicalAddress;
+ uint32_t mDepth;
+ uint32_t mRangeIndex;
+ };
+ mozilla::Variant<NormalFrameData, JITFrameData> mData;
+ };
+
+ struct FrameKeyHasher {
+ using Lookup = FrameKey;
+
+ static mozilla::HashNumber hash(const FrameKey& aLookup) {
+ mozilla::HashNumber hash = 0;
+ if (aLookup.mData.is<FrameKey::NormalFrameData>()) {
+ const FrameKey::NormalFrameData& data =
+ aLookup.mData.as<FrameKey::NormalFrameData>();
+ if (!data.mLocation.IsEmpty()) {
+ hash = mozilla::AddToHash(hash,
+ mozilla::HashString(data.mLocation.get()));
+ }
+ hash = mozilla::AddToHash(hash, data.mRelevantForJS);
+ hash = mozilla::AddToHash(hash, data.mBaselineInterp);
+ hash = mozilla::AddToHash(hash, data.mInnerWindowID);
+ if (data.mLine.isSome()) {
+ hash = mozilla::AddToHash(hash, *data.mLine);
+ }
+ if (data.mColumn.isSome()) {
+ hash = mozilla::AddToHash(hash, *data.mColumn);
+ }
+ if (data.mCategoryPair.isSome()) {
+ hash = mozilla::AddToHash(hash,
+ static_cast<uint32_t>(*data.mCategoryPair));
+ }
+ } else {
+ const FrameKey::JITFrameData& data =
+ aLookup.mData.as<FrameKey::JITFrameData>();
+ hash = mozilla::AddToHash(hash, data.mCanonicalAddress);
+ hash = mozilla::AddToHash(hash, data.mDepth);
+ hash = mozilla::AddToHash(hash, data.mRangeIndex);
+ }
+ return hash;
+ }
+
+ static bool match(const FrameKey& aKey, const FrameKey& aLookup) {
+ return aKey == aLookup;
+ }
+
+ static void rekey(FrameKey& aKey, const FrameKey& aNewKey) {
+ aKey = aNewKey;
+ }
+ };
+
+ struct StackKey {
+ mozilla::Maybe<uint32_t> mPrefixStackIndex;
+ uint32_t mFrameIndex;
+
+ explicit StackKey(uint32_t aFrame)
+ : mFrameIndex(aFrame), mHash(mozilla::HashGeneric(aFrame)) {}
+
+ StackKey(const StackKey& aPrefix, uint32_t aPrefixStackIndex,
+ uint32_t aFrame)
+ : mPrefixStackIndex(mozilla::Some(aPrefixStackIndex)),
+ mFrameIndex(aFrame),
+ mHash(mozilla::AddToHash(aPrefix.mHash, aFrame)) {}
+
+ mozilla::HashNumber Hash() const { return mHash; }
+
+ bool operator==(const StackKey& aOther) const {
+ return mPrefixStackIndex == aOther.mPrefixStackIndex &&
+ mFrameIndex == aOther.mFrameIndex;
+ }
+
+ private:
+ mozilla::HashNumber mHash;
+ };
+
+ struct StackKeyHasher {
+ using Lookup = StackKey;
+
+ static mozilla::HashNumber hash(const StackKey& aLookup) {
+ return aLookup.Hash();
+ }
+
+ static bool match(const StackKey& aKey, const StackKey& aLookup) {
+ return aKey == aLookup;
+ }
+
+ static void rekey(StackKey& aKey, const StackKey& aNewKey) {
+ aKey = aNewKey;
+ }
+ };
+
+ UniqueStacks(mozilla::FailureLatch& aFailureLatch,
+ JITFrameInfo&& aJITFrameInfo,
+ ProfilerCodeAddressService* aCodeAddressService = nullptr);
+
+ // Return a StackKey for aFrame as the stack's root frame (no prefix).
+ [[nodiscard]] mozilla::Maybe<StackKey> BeginStack(const FrameKey& aFrame);
+
+ // Return a new StackKey that is obtained by appending aFrame to aStack.
+ [[nodiscard]] mozilla::Maybe<StackKey> AppendFrame(const StackKey& aStack,
+ const FrameKey& aFrame);
+
+ // Look up frame keys for the given JIT address, and ensure that our frame
+ // table has entries for the returned frame keys. The JSON for these frames
+ // is taken from mJITInfoRanges.
+ // aBufferPosition is needed in order to look up the correct JIT frame info
+ // object in mJITInfoRanges.
+ [[nodiscard]] mozilla::Maybe<mozilla::Vector<UniqueStacks::FrameKey>>
+ LookupFramesForJITAddressFromBufferPos(void* aJITAddress,
+ uint64_t aBufferPosition);
+
+ [[nodiscard]] mozilla::Maybe<uint32_t> GetOrAddFrameIndex(
+ const FrameKey& aFrame);
+ [[nodiscard]] mozilla::Maybe<uint32_t> GetOrAddStackIndex(
+ const StackKey& aStack);
+
+ void SpliceFrameTableElements(SpliceableJSONWriter& aWriter);
+ void SpliceStackTableElements(SpliceableJSONWriter& aWriter);
+
+ [[nodiscard]] UniqueJSONStrings& UniqueStrings() {
+ MOZ_RELEASE_ASSERT(mUniqueStrings.get());
+ return *mUniqueStrings;
+ }
+
+ // Find the function name at the given PC (if a ProfilerCodeAddressService was
+ // provided), otherwise just stringify that PC.
+ [[nodiscard]] nsAutoCString FunctionNameOrAddress(void* aPC);
+
+ FAILURELATCH_IMPL_PROXY(mFrameTableWriter)
+
+ private:
+ void StreamNonJITFrame(const FrameKey& aFrame);
+ void StreamStack(const StackKey& aStack);
+
+ mozilla::UniquePtr<UniqueJSONStrings> mUniqueStrings;
+
+ ProfilerCodeAddressService* mCodeAddressService = nullptr;
+
+ SpliceableChunkedJSONWriter mFrameTableWriter;
+ mozilla::HashMap<FrameKey, uint32_t, FrameKeyHasher> mFrameToIndexMap;
+
+ SpliceableChunkedJSONWriter mStackTableWriter;
+ mozilla::HashMap<StackKey, uint32_t, StackKeyHasher> mStackToIndexMap;
+
+ mozilla::Vector<JITFrameInfoForBufferRange> mJITInfoRanges;
+};
+
+//
+// Thread profile JSON Format
+// --------------------------
+//
+// The profile contains much duplicate information. The output JSON of the
+// profile attempts to deduplicate strings, frames, and stack prefixes, to cut
+// down on size and to increase JSON streaming speed. Deduplicated values are
+// streamed as indices into their respective tables.
+//
+// Further, arrays of objects with the same set of properties (e.g., samples,
+// frames) are output as arrays according to a schema instead of an object
+// with property names. A property that is not present is represented in the
+// array as null or undefined.
+//
+// The format of the thread profile JSON is shown by the following example
+// with 1 sample and 1 marker:
+//
+// {
+// "name": "Foo",
+// "tid": 42,
+// "samples":
+// {
+// "schema":
+// {
+// "stack": 0, /* index into stackTable */
+// "time": 1, /* number */
+// "eventDelay": 2, /* number */
+// "ThreadCPUDelta": 3, /* optional number */
+// },
+// "data":
+// [
+// [ 1, 0.0, 0.0 ] /* { stack: 1, time: 0.0, eventDelay: 0.0 } */
+// ]
+// },
+//
+// "markers":
+// {
+// "schema":
+// {
+// "name": 0, /* index into stringTable */
+// "time": 1, /* number */
+// "data": 2 /* arbitrary JSON */
+// },
+// "data":
+// [
+// [ 3, 0.1 ] /* { name: 'example marker', time: 0.1 } */
+// ]
+// },
+//
+// "stackTable":
+// {
+// "schema":
+// {
+// "prefix": 0, /* index into stackTable */
+// "frame": 1 /* index into frameTable */
+// },
+// "data":
+// [
+// [ null, 0 ], /* (root) */
+// [ 0, 1 ] /* (root) > foo.js */
+// ]
+// },
+//
+// "frameTable":
+// {
+// "schema":
+// {
+// "location": 0, /* index into stringTable */
+// "relevantForJS": 1, /* bool */
+// "innerWindowID": 2, /* inner window ID of global JS `window` object */
+// "implementation": 3, /* index into stringTable */
+// "line": 4, /* number */
+// "column": 5, /* number */
+// "category": 6, /* index into profile.meta.categories */
+// "subcategory": 7 /* index into
+// profile.meta.categories[category].subcategories */
+// },
+// "data":
+// [
+// [ 0 ], /* { location: '(root)' } */
+// [ 1, null, null, 2 ] /* { location: 'foo.js',
+// implementation: 'baseline' } */
+// ]
+// },
+//
+// "stringTable":
+// [
+// "(root)",
+// "foo.js",
+// "baseline",
+// "example marker"
+// ]
+// }
+//
+// Process:
+// {
+// "name": "Bar",
+// "pid": 24,
+// "threads":
+// [
+// <0-N threads from above>
+// ],
+// "counters": /* includes the memory counter */
+// [
+// {
+// "name": "qwerty",
+// "category": "uiop",
+// "description": "this is qwerty uiop",
+// "sample_groups:
+// [
+// {
+// "id": 42, /* number (thread id, or object identifier (tab), etc) */
+// "samples:
+// {
+// "schema":
+// {
+// "time": 1, /* number */
+// "number": 2, /* number (of times the counter was touched) */
+// "count": 3 /* number (total for the counter) */
+// },
+// "data":
+// [
+// [ 0.1, 1824,
+// 454622 ] /* { time: 0.1, number: 1824, count: 454622 } */
+// ]
+// },
+// },
+// /* more sample-group objects with different id's */
+// ]
+// },
+// /* more counters */
+// ],
+// }
+//
+#endif /* ndef ProfileBufferEntry_h */
diff --git a/tools/profiler/core/ProfiledThreadData.cpp b/tools/profiler/core/ProfiledThreadData.cpp
new file mode 100644
index 0000000000..febda0d85b
--- /dev/null
+++ b/tools/profiler/core/ProfiledThreadData.cpp
@@ -0,0 +1,455 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "ProfiledThreadData.h"
+
+#include "platform.h"
+#include "ProfileBuffer.h"
+
+#include "mozilla/OriginAttributes.h"
+#include "mozilla/Span.h"
+#include "nsXULAppAPI.h"
+
+#if defined(GP_OS_darwin)
+# include <pthread.h>
+#endif
+
+using namespace mozilla::literals::ProportionValue_literals;
+
+ProfiledThreadData::ProfiledThreadData(
+ const mozilla::profiler::ThreadRegistrationInfo& aThreadInfo)
+ : mThreadInfo(aThreadInfo.Name(), aThreadInfo.ThreadId(),
+ aThreadInfo.IsMainThread(), aThreadInfo.RegisterTime()) {
+ MOZ_COUNT_CTOR(ProfiledThreadData);
+}
+
+ProfiledThreadData::ProfiledThreadData(
+ mozilla::profiler::ThreadRegistrationInfo&& aThreadInfo)
+ : mThreadInfo(std::move(aThreadInfo)) {
+ MOZ_COUNT_CTOR(ProfiledThreadData);
+}
+
+ProfiledThreadData::~ProfiledThreadData() {
+ MOZ_COUNT_DTOR(ProfiledThreadData);
+}
+
+static void StreamTables(UniqueStacks&& aUniqueStacks, JSContext* aCx,
+ SpliceableJSONWriter& aWriter,
+ const mozilla::TimeStamp& aProcessStartTime,
+ mozilla::ProgressLogger aProgressLogger) {
+ aWriter.StartObjectProperty("stackTable");
+ {
+ {
+ JSONSchemaWriter schema(aWriter);
+ schema.WriteField("prefix");
+ schema.WriteField("frame");
+ }
+
+ aWriter.StartArrayProperty("data");
+ {
+ aProgressLogger.SetLocalProgress(1_pc, "Splicing stack table...");
+ aUniqueStacks.SpliceStackTableElements(aWriter);
+ aProgressLogger.SetLocalProgress(30_pc, "Spliced stack table");
+ }
+ aWriter.EndArray();
+ }
+ aWriter.EndObject();
+
+ aWriter.StartObjectProperty("frameTable");
+ {
+ {
+ JSONSchemaWriter schema(aWriter);
+ schema.WriteField("location");
+ schema.WriteField("relevantForJS");
+ schema.WriteField("innerWindowID");
+ schema.WriteField("implementation");
+ schema.WriteField("line");
+ schema.WriteField("column");
+ schema.WriteField("category");
+ schema.WriteField("subcategory");
+ }
+
+ aWriter.StartArrayProperty("data");
+ {
+ aProgressLogger.SetLocalProgress(30_pc, "Splicing frame table...");
+ aUniqueStacks.SpliceFrameTableElements(aWriter);
+ aProgressLogger.SetLocalProgress(60_pc, "Spliced frame table");
+ }
+ aWriter.EndArray();
+ }
+ aWriter.EndObject();
+
+ aWriter.StartArrayProperty("stringTable");
+ {
+ aProgressLogger.SetLocalProgress(60_pc, "Splicing string table...");
+ std::move(aUniqueStacks.UniqueStrings()).SpliceStringTableElements(aWriter);
+ aProgressLogger.SetLocalProgress(90_pc, "Spliced string table");
+ }
+ aWriter.EndArray();
+}
+
+mozilla::NotNull<mozilla::UniquePtr<UniqueStacks>>
+ProfiledThreadData::PrepareUniqueStacks(
+ const ProfileBuffer& aBuffer, JSContext* aCx,
+ mozilla::FailureLatch& aFailureLatch, ProfilerCodeAddressService* aService,
+ mozilla::ProgressLogger aProgressLogger) {
+ if (mJITFrameInfoForPreviousJSContexts &&
+ mJITFrameInfoForPreviousJSContexts->HasExpired(
+ aBuffer.BufferRangeStart())) {
+ mJITFrameInfoForPreviousJSContexts = nullptr;
+ }
+ aProgressLogger.SetLocalProgress(1_pc, "Checked JIT frame info presence");
+
+ // If we have an existing JITFrameInfo in mJITFrameInfoForPreviousJSContexts,
+ // copy the data from it.
+ JITFrameInfo jitFrameInfo =
+ mJITFrameInfoForPreviousJSContexts
+ ? JITFrameInfo(*mJITFrameInfoForPreviousJSContexts,
+ aProgressLogger.CreateSubLoggerTo(
+ "Retrieving JIT frame info...", 10_pc,
+ "Retrieved JIT frame info"))
+ : JITFrameInfo();
+
+ if (aCx && mBufferPositionWhenReceivedJSContext) {
+ aBuffer.AddJITInfoForRange(
+ *mBufferPositionWhenReceivedJSContext, mThreadInfo.ThreadId(), aCx,
+ jitFrameInfo,
+ aProgressLogger.CreateSubLoggerTo("Adding JIT info...", 90_pc,
+ "Added JIT info"));
+ } else {
+ aProgressLogger.SetLocalProgress(90_pc, "No JIT info");
+ }
+
+ return mozilla::MakeNotNull<mozilla::UniquePtr<UniqueStacks>>(
+ aFailureLatch, std::move(jitFrameInfo), aService);
+}
+
+void ProfiledThreadData::StreamJSON(
+ const ProfileBuffer& aBuffer, JSContext* aCx, SpliceableJSONWriter& aWriter,
+ const nsACString& aProcessName, const nsACString& aETLDplus1,
+ const mozilla::TimeStamp& aProcessStartTime, double aSinceTime,
+ ProfilerCodeAddressService* aService,
+ mozilla::ProgressLogger aProgressLogger) {
+ mozilla::NotNull<mozilla::UniquePtr<UniqueStacks>> uniqueStacks =
+ PrepareUniqueStacks(aBuffer, aCx, aWriter.SourceFailureLatch(), aService,
+ aProgressLogger.CreateSubLoggerFromTo(
+ 0_pc, "Preparing unique stacks...", 10_pc,
+ "Prepared Unique stacks"));
+
+ aWriter.SetUniqueStrings(uniqueStacks->UniqueStrings());
+
+ aWriter.Start();
+ {
+ StreamSamplesAndMarkers(
+ mThreadInfo.Name(), mThreadInfo.ThreadId(), aBuffer, aWriter,
+ aProcessName, aETLDplus1, aProcessStartTime, mThreadInfo.RegisterTime(),
+ mUnregisterTime, aSinceTime, *uniqueStacks,
+ aProgressLogger.CreateSubLoggerTo(
+ 90_pc,
+ "ProfiledThreadData::StreamJSON: Streamed samples and markers"));
+
+ StreamTables(std::move(*uniqueStacks), aCx, aWriter, aProcessStartTime,
+ aProgressLogger.CreateSubLoggerTo(
+ 99_pc, "Streamed tables and trace logger"));
+ }
+ aWriter.End();
+
+ aWriter.ResetUniqueStrings();
+}
+
+void ProfiledThreadData::StreamJSON(
+ ThreadStreamingContext&& aThreadStreamingContext,
+ SpliceableJSONWriter& aWriter, const nsACString& aProcessName,
+ const nsACString& aETLDplus1, const mozilla::TimeStamp& aProcessStartTime,
+ ProfilerCodeAddressService* aService,
+ mozilla::ProgressLogger aProgressLogger) {
+ aWriter.Start();
+ {
+ StreamSamplesAndMarkers(
+ mThreadInfo.Name(), aThreadStreamingContext, aWriter, aProcessName,
+ aETLDplus1, aProcessStartTime, mThreadInfo.RegisterTime(),
+ mUnregisterTime,
+ aProgressLogger.CreateSubLoggerFromTo(
+ 1_pc, "ProfiledThreadData::StreamJSON(context): Streaming...",
+ 90_pc,
+ "ProfiledThreadData::StreamJSON(context): Streamed samples and "
+ "markers"));
+
+ StreamTables(
+ std::move(*aThreadStreamingContext.mUniqueStacks),
+ aThreadStreamingContext.mJSContext, aWriter, aProcessStartTime,
+ aProgressLogger.CreateSubLoggerTo(
+ "ProfiledThreadData::StreamJSON(context): Streaming tables...",
+ 99_pc, "ProfiledThreadData::StreamJSON(context): Streamed tables"));
+ }
+ aWriter.End();
+}
+
+// StreamSamplesDataCallback: (ProgressLogger) -> ProfilerThreadId
+// StreamMarkersDataCallback: (ProgressLogger) -> void
+// Returns the ProfilerThreadId returned by StreamSamplesDataCallback, which
+// should be the thread id of the last sample that was processed (if any;
+// otherwise it is left unspecified). This is mostly useful when the caller
+// doesn't know where the sample comes from, e.g., when it's a backtrace in a
+// marker.
+template <typename StreamSamplesDataCallback,
+ typename StreamMarkersDataCallback>
+ProfilerThreadId DoStreamSamplesAndMarkers(
+ const char* aName, SpliceableJSONWriter& aWriter,
+ const nsACString& aProcessName, const nsACString& aETLDplus1,
+ const mozilla::TimeStamp& aProcessStartTime,
+ const mozilla::TimeStamp& aRegisterTime,
+ const mozilla::TimeStamp& aUnregisterTime,
+ mozilla::ProgressLogger aProgressLogger,
+ StreamSamplesDataCallback&& aStreamSamplesDataCallback,
+ StreamMarkersDataCallback&& aStreamMarkersDataCallback) {
+ ProfilerThreadId processedThreadId;
+
+ aWriter.StringProperty("processType",
+ mozilla::MakeStringSpan(XRE_GetProcessTypeString()));
+
+ aWriter.StringProperty("name", mozilla::MakeStringSpan(aName));
+
+ // Use given process name (if any), unless we're the parent process.
+ if (XRE_IsParentProcess()) {
+ aWriter.StringProperty("processName", "Parent Process");
+ } else if (!aProcessName.IsEmpty()) {
+ aWriter.StringProperty("processName", aProcessName);
+ }
+ if (!aETLDplus1.IsEmpty()) {
+ nsAutoCString originNoSuffix;
+ mozilla::OriginAttributes attrs;
+ if (!attrs.PopulateFromOrigin(aETLDplus1, originNoSuffix)) {
+ aWriter.StringProperty("eTLD+1", aETLDplus1);
+ } else {
+ aWriter.StringProperty("eTLD+1", originNoSuffix);
+ aWriter.BoolProperty("isPrivateBrowsing", attrs.mPrivateBrowsingId > 0);
+ aWriter.IntProperty("userContextId", attrs.mUserContextId);
+ }
+ }
+
+ if (aRegisterTime) {
+ aWriter.DoubleProperty(
+ "registerTime", (aRegisterTime - aProcessStartTime).ToMilliseconds());
+ } else {
+ aWriter.NullProperty("registerTime");
+ }
+
+ if (aUnregisterTime) {
+ aWriter.DoubleProperty(
+ "unregisterTime",
+ (aUnregisterTime - aProcessStartTime).ToMilliseconds());
+ } else {
+ aWriter.NullProperty("unregisterTime");
+ }
+
+ aWriter.StartObjectProperty("samples");
+ {
+ {
+ JSONSchemaWriter schema(aWriter);
+ schema.WriteField("stack");
+ schema.WriteField("time");
+ schema.WriteField("eventDelay");
+#define RUNNING_TIME_FIELD(index, name, unit, jsonProperty) \
+ schema.WriteField(#jsonProperty);
+ PROFILER_FOR_EACH_RUNNING_TIME(RUNNING_TIME_FIELD)
+#undef RUNNING_TIME_FIELD
+ }
+
+ aWriter.StartArrayProperty("data");
+ {
+ processedThreadId = std::forward<StreamSamplesDataCallback>(
+ aStreamSamplesDataCallback)(aProgressLogger.CreateSubLoggerFromTo(
+ 1_pc, "Streaming samples...", 49_pc, "Streamed samples"));
+ }
+ aWriter.EndArray();
+ }
+ aWriter.EndObject();
+
+ aWriter.StartObjectProperty("markers");
+ {
+ {
+ JSONSchemaWriter schema(aWriter);
+ schema.WriteField("name");
+ schema.WriteField("startTime");
+ schema.WriteField("endTime");
+ schema.WriteField("phase");
+ schema.WriteField("category");
+ schema.WriteField("data");
+ }
+
+ aWriter.StartArrayProperty("data");
+ {
+ std::forward<StreamMarkersDataCallback>(aStreamMarkersDataCallback)(
+ aProgressLogger.CreateSubLoggerFromTo(50_pc, "Streaming markers...",
+ 99_pc, "Streamed markers"));
+ }
+ aWriter.EndArray();
+ }
+ aWriter.EndObject();
+
+ // Tech note: If `ToNumber()` returns a uint64_t, the conversion to int64_t is
+ // "implementation-defined" before C++20. This is acceptable here, because
+ // this is a one-way conversion to a unique identifier that's used to visually
+ // separate data by thread on the front-end.
+ aWriter.IntProperty(
+ "pid", static_cast<int64_t>(profiler_current_process_id().ToNumber()));
+ aWriter.IntProperty("tid",
+ static_cast<int64_t>(processedThreadId.ToNumber()));
+
+ return processedThreadId;
+}
+
+ProfilerThreadId StreamSamplesAndMarkers(
+ const char* aName, ProfilerThreadId aThreadId, const ProfileBuffer& aBuffer,
+ SpliceableJSONWriter& aWriter, const nsACString& aProcessName,
+ const nsACString& aETLDplus1, const mozilla::TimeStamp& aProcessStartTime,
+ const mozilla::TimeStamp& aRegisterTime,
+ const mozilla::TimeStamp& aUnregisterTime, double aSinceTime,
+ UniqueStacks& aUniqueStacks, mozilla::ProgressLogger aProgressLogger) {
+ return DoStreamSamplesAndMarkers(
+ aName, aWriter, aProcessName, aETLDplus1, aProcessStartTime,
+ aRegisterTime, aUnregisterTime, std::move(aProgressLogger),
+ [&](mozilla::ProgressLogger aSubProgressLogger) {
+ ProfilerThreadId processedThreadId = aBuffer.StreamSamplesToJSON(
+ aWriter, aThreadId, aSinceTime, aUniqueStacks,
+ std::move(aSubProgressLogger));
+ return aThreadId.IsSpecified() ? aThreadId : processedThreadId;
+ },
+ [&](mozilla::ProgressLogger aSubProgressLogger) {
+ aBuffer.StreamMarkersToJSON(aWriter, aThreadId, aProcessStartTime,
+ aSinceTime, aUniqueStacks,
+ std::move(aSubProgressLogger));
+ });
+}
+
+void StreamSamplesAndMarkers(const char* aName,
+ ThreadStreamingContext& aThreadData,
+ SpliceableJSONWriter& aWriter,
+ const nsACString& aProcessName,
+ const nsACString& aETLDplus1,
+ const mozilla::TimeStamp& aProcessStartTime,
+ const mozilla::TimeStamp& aRegisterTime,
+ const mozilla::TimeStamp& aUnregisterTime,
+ mozilla::ProgressLogger aProgressLogger) {
+ (void)DoStreamSamplesAndMarkers(
+ aName, aWriter, aProcessName, aETLDplus1, aProcessStartTime,
+ aRegisterTime, aUnregisterTime, std::move(aProgressLogger),
+ [&](mozilla::ProgressLogger aSubProgressLogger) {
+ aWriter.TakeAndSplice(
+ aThreadData.mSamplesDataWriter.TakeChunkedWriteFunc());
+ return aThreadData.mProfiledThreadData.Info().ThreadId();
+ },
+ [&](mozilla::ProgressLogger aSubProgressLogger) {
+ aWriter.TakeAndSplice(
+ aThreadData.mMarkersDataWriter.TakeChunkedWriteFunc());
+ });
+}
+
+void ProfiledThreadData::NotifyAboutToLoseJSContext(
+ JSContext* aContext, const mozilla::TimeStamp& aProcessStartTime,
+ ProfileBuffer& aBuffer) {
+ if (!mBufferPositionWhenReceivedJSContext) {
+ return;
+ }
+
+ MOZ_RELEASE_ASSERT(aContext);
+
+ if (mJITFrameInfoForPreviousJSContexts &&
+ mJITFrameInfoForPreviousJSContexts->HasExpired(
+ aBuffer.BufferRangeStart())) {
+ mJITFrameInfoForPreviousJSContexts = nullptr;
+ }
+
+ mozilla::UniquePtr<JITFrameInfo> jitFrameInfo =
+ mJITFrameInfoForPreviousJSContexts
+ ? std::move(mJITFrameInfoForPreviousJSContexts)
+ : mozilla::MakeUnique<JITFrameInfo>();
+
+ aBuffer.AddJITInfoForRange(*mBufferPositionWhenReceivedJSContext,
+ mThreadInfo.ThreadId(), aContext, *jitFrameInfo,
+ mozilla::ProgressLogger{});
+
+ mJITFrameInfoForPreviousJSContexts = std::move(jitFrameInfo);
+ mBufferPositionWhenReceivedJSContext = mozilla::Nothing();
+}
+
+ThreadStreamingContext::ThreadStreamingContext(
+ ProfiledThreadData& aProfiledThreadData, const ProfileBuffer& aBuffer,
+ JSContext* aCx, mozilla::FailureLatch& aFailureLatch,
+ ProfilerCodeAddressService* aService,
+ mozilla::ProgressLogger aProgressLogger)
+ : mProfiledThreadData(aProfiledThreadData),
+ mJSContext(aCx),
+ mSamplesDataWriter(aFailureLatch),
+ mMarkersDataWriter(aFailureLatch),
+ mUniqueStacks(mProfiledThreadData.PrepareUniqueStacks(
+ aBuffer, aCx, aFailureLatch, aService,
+ aProgressLogger.CreateSubLoggerFromTo(
+ 0_pc, "Preparing thread streaming context unique stacks...",
+ 99_pc, "Prepared thread streaming context Unique stacks"))) {
+ if (aFailureLatch.Failed()) {
+ return;
+ }
+ mSamplesDataWriter.SetUniqueStrings(mUniqueStacks->UniqueStrings());
+ mSamplesDataWriter.StartBareList();
+ mMarkersDataWriter.SetUniqueStrings(mUniqueStacks->UniqueStrings());
+ mMarkersDataWriter.StartBareList();
+}
+
+void ThreadStreamingContext::FinalizeWriter() {
+ mSamplesDataWriter.EndBareList();
+ mMarkersDataWriter.EndBareList();
+}
+
+ProcessStreamingContext::ProcessStreamingContext(
+ size_t aThreadCount, mozilla::FailureLatch& aFailureLatch,
+ const mozilla::TimeStamp& aProcessStartTime, double aSinceTime)
+ : mFailureLatch(aFailureLatch),
+ mProcessStartTime(aProcessStartTime),
+ mSinceTime(aSinceTime) {
+ if (mFailureLatch.Failed()) {
+ return;
+ }
+ if (!mTIDList.initCapacity(aThreadCount)) {
+ mFailureLatch.SetFailure(
+ "OOM in ProcessStreamingContext allocating TID list");
+ return;
+ }
+ if (!mThreadStreamingContextList.initCapacity(aThreadCount)) {
+ mFailureLatch.SetFailure(
+ "OOM in ProcessStreamingContext allocating context list");
+ mTIDList.clear();
+ return;
+ }
+}
+
+ProcessStreamingContext::~ProcessStreamingContext() {
+ if (mFailureLatch.Failed()) {
+ return;
+ }
+ MOZ_ASSERT(mTIDList.length() == mThreadStreamingContextList.length());
+ MOZ_ASSERT(mTIDList.length() == mTIDList.capacity(),
+ "Didn't pre-allocate exactly right");
+}
+
+void ProcessStreamingContext::AddThreadStreamingContext(
+ ProfiledThreadData& aProfiledThreadData, const ProfileBuffer& aBuffer,
+ JSContext* aCx, ProfilerCodeAddressService* aService,
+ mozilla::ProgressLogger aProgressLogger) {
+ if (mFailureLatch.Failed()) {
+ return;
+ }
+ MOZ_ASSERT(mTIDList.length() == mThreadStreamingContextList.length());
+ MOZ_ASSERT(mTIDList.length() < mTIDList.capacity(),
+ "Didn't pre-allocate enough");
+ mTIDList.infallibleAppend(aProfiledThreadData.Info().ThreadId());
+ mThreadStreamingContextList.infallibleEmplaceBack(
+ aProfiledThreadData, aBuffer, aCx, mFailureLatch, aService,
+ aProgressLogger.CreateSubLoggerFromTo(
+ 1_pc, "Prepared streaming thread id", 100_pc,
+ "Added thread streaming context"));
+}
diff --git a/tools/profiler/core/ProfiledThreadData.h b/tools/profiler/core/ProfiledThreadData.h
new file mode 100644
index 0000000000..47ae0c579c
--- /dev/null
+++ b/tools/profiler/core/ProfiledThreadData.h
@@ -0,0 +1,250 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef ProfiledThreadData_h
+#define ProfiledThreadData_h
+
+#include "platform.h"
+#include "ProfileBuffer.h"
+#include "ProfileBufferEntry.h"
+
+#include "mozilla/FailureLatch.h"
+#include "mozilla/Maybe.h"
+#include "mozilla/NotNull.h"
+#include "mozilla/ProfileJSONWriter.h"
+#include "mozilla/ProfilerThreadRegistrationInfo.h"
+#include "mozilla/RefPtr.h"
+#include "mozilla/TimeStamp.h"
+#include "mozilla/UniquePtr.h"
+#include "mozilla/Vector.h"
+#include "nsStringFwd.h"
+
+class nsIEventTarget;
+class ProfilerCodeAddressService;
+struct JSContext;
+struct ThreadStreamingContext;
+
+// This class contains information about a thread that is only relevant while
+// the profiler is running, for any threads (both alive and dead) whose thread
+// name matches the "thread filter" in the current profiler run.
+// ProfiledThreadData objects may be kept alive even after the thread is
+// unregistered, as long as there is still data for that thread in the profiler
+// buffer.
+//
+// Accesses to this class are protected by the profiler state lock.
+//
+// Created as soon as the following are true for the thread:
+// - The profiler is running, and
+// - the thread matches the profiler's thread filter, and
+// - the thread is registered with the profiler.
+// So it gets created in response to either (1) the profiler being started (for
+// an existing registered thread) or (2) the thread being registered (if the
+// profiler is already running).
+//
+// The thread may be unregistered during the lifetime of ProfiledThreadData.
+// If that happens, NotifyUnregistered() is called.
+//
+// This class is the right place to store buffer positions. Profiler buffer
+// positions become invalid if the profiler buffer is destroyed, which happens
+// when the profiler is stopped.
+class ProfiledThreadData final {
+ public:
+ explicit ProfiledThreadData(
+ const mozilla::profiler::ThreadRegistrationInfo& aThreadInfo);
+ explicit ProfiledThreadData(
+ mozilla::profiler::ThreadRegistrationInfo&& aThreadInfo);
+ ~ProfiledThreadData();
+
+ void NotifyUnregistered(uint64_t aBufferPosition) {
+ mLastSample = mozilla::Nothing();
+ MOZ_ASSERT(!mBufferPositionWhenReceivedJSContext,
+ "JSContext should have been cleared before the thread was "
+ "unregistered");
+ mUnregisterTime = mozilla::TimeStamp::Now();
+ mBufferPositionWhenUnregistered = mozilla::Some(aBufferPosition);
+ mPreviousThreadRunningTimes.Clear();
+ }
+ mozilla::Maybe<uint64_t> BufferPositionWhenUnregistered() {
+ return mBufferPositionWhenUnregistered;
+ }
+
+ mozilla::Maybe<uint64_t>& LastSample() { return mLastSample; }
+
+ mozilla::NotNull<mozilla::UniquePtr<UniqueStacks>> PrepareUniqueStacks(
+ const ProfileBuffer& aBuffer, JSContext* aCx,
+ mozilla::FailureLatch& aFailureLatch,
+ ProfilerCodeAddressService* aService,
+ mozilla::ProgressLogger aProgressLogger);
+
+ void StreamJSON(const ProfileBuffer& aBuffer, JSContext* aCx,
+ SpliceableJSONWriter& aWriter, const nsACString& aProcessName,
+ const nsACString& aETLDplus1,
+ const mozilla::TimeStamp& aProcessStartTime,
+ double aSinceTime, ProfilerCodeAddressService* aService,
+ mozilla::ProgressLogger aProgressLogger);
+ void StreamJSON(ThreadStreamingContext&& aThreadStreamingContext,
+ SpliceableJSONWriter& aWriter, const nsACString& aProcessName,
+ const nsACString& aETLDplus1,
+ const mozilla::TimeStamp& aProcessStartTime,
+ ProfilerCodeAddressService* aService,
+ mozilla::ProgressLogger aProgressLogger);
+
+ const mozilla::profiler::ThreadRegistrationInfo& Info() const {
+ return mThreadInfo;
+ }
+
+ void NotifyReceivedJSContext(uint64_t aCurrentBufferPosition) {
+ mBufferPositionWhenReceivedJSContext =
+ mozilla::Some(aCurrentBufferPosition);
+ }
+
+ // Call this method when the JS entries inside the buffer are about to
+ // become invalid, i.e., just before JS shutdown.
+ void NotifyAboutToLoseJSContext(JSContext* aCx,
+ const mozilla::TimeStamp& aProcessStartTime,
+ ProfileBuffer& aBuffer);
+
+ RunningTimes& PreviousThreadRunningTimesRef() {
+ return mPreviousThreadRunningTimes;
+ }
+
+ private:
+ // Group A:
+ // The following fields are interesting for the entire lifetime of a
+ // ProfiledThreadData object.
+
+ // This thread's thread info. Local copy because the one in ThreadRegistration
+ // may be destroyed while ProfiledThreadData stays alive.
+ const mozilla::profiler::ThreadRegistrationInfo mThreadInfo;
+
+ // Contains JSON for JIT frames from any JSContexts that were used for this
+ // thread in the past.
+ // Null if this thread has never lost a JSContext or if all samples from
+ // previous JSContexts have been evicted from the profiler buffer.
+ mozilla::UniquePtr<JITFrameInfo> mJITFrameInfoForPreviousJSContexts;
+
+ // Group B:
+ // The following fields are only used while this thread is alive and
+ // registered. They become Nothing() or empty once the thread is unregistered.
+
+ // When sampling, this holds the position in ActivePS::mBuffer of the most
+ // recent sample for this thread, or Nothing() if there is no sample for this
+ // thread in the buffer.
+ mozilla::Maybe<uint64_t> mLastSample;
+
+ // Only non-Nothing() if the thread currently has a JSContext.
+ mozilla::Maybe<uint64_t> mBufferPositionWhenReceivedJSContext;
+
+ // RunningTimes at the previous sample if any, or empty.
+ RunningTimes mPreviousThreadRunningTimes;
+
+ // Group C:
+ // The following fields are only used once this thread has been unregistered.
+
+ mozilla::Maybe<uint64_t> mBufferPositionWhenUnregistered;
+ mozilla::TimeStamp mUnregisterTime;
+};
+
+// This class will be used when outputting the profile data for one thread.
+struct ThreadStreamingContext {
+ ProfiledThreadData& mProfiledThreadData;
+ JSContext* mJSContext;
+ SpliceableChunkedJSONWriter mSamplesDataWriter;
+ SpliceableChunkedJSONWriter mMarkersDataWriter;
+ mozilla::NotNull<mozilla::UniquePtr<UniqueStacks>> mUniqueStacks;
+
+ // These are updated when writing samples, and reused for "same-sample"s.
+ enum PreviousStackState { eNoStackYet, eStackWasNotEmpty, eStackWasEmpty };
+ PreviousStackState mPreviousStackState = eNoStackYet;
+ uint32_t mPreviousStack = 0;
+
+ ThreadStreamingContext(ProfiledThreadData& aProfiledThreadData,
+ const ProfileBuffer& aBuffer, JSContext* aCx,
+ mozilla::FailureLatch& aFailureLatch,
+ ProfilerCodeAddressService* aService,
+ mozilla::ProgressLogger aProgressLogger);
+
+ void FinalizeWriter();
+};
+
+// This class will be used when outputting the profile data for all threads.
+class ProcessStreamingContext final : public mozilla::FailureLatch {
+ public:
+ // Pre-allocate space for `aThreadCount` threads.
+ ProcessStreamingContext(size_t aThreadCount,
+ mozilla::FailureLatch& aFailureLatch,
+ const mozilla::TimeStamp& aProcessStartTime,
+ double aSinceTime);
+
+ ~ProcessStreamingContext();
+
+ // Add the streaming context corresponding to each profiled thread. This
+ // should be called exactly the number of times specified in the constructor.
+ void AddThreadStreamingContext(ProfiledThreadData& aProfiledThreadData,
+ const ProfileBuffer& aBuffer, JSContext* aCx,
+ ProfilerCodeAddressService* aService,
+ mozilla::ProgressLogger aProgressLogger);
+
+ // Retrieve the ThreadStreamingContext for a given thread id.
+ // Returns null if that thread id doesn't correspond to any profiled thread.
+ ThreadStreamingContext* GetThreadStreamingContext(
+ const ProfilerThreadId& aThreadId) {
+ for (size_t i = 0; i < mTIDList.length(); ++i) {
+ if (mTIDList[i] == aThreadId) {
+ return &mThreadStreamingContextList[i];
+ }
+ }
+ return nullptr;
+ }
+
+ const mozilla::TimeStamp& ProcessStartTime() const {
+ return mProcessStartTime;
+ }
+
+ double GetSinceTime() const { return mSinceTime; }
+
+ ThreadStreamingContext* begin() {
+ return mThreadStreamingContextList.begin();
+ };
+ ThreadStreamingContext* end() { return mThreadStreamingContextList.end(); };
+
+ FAILURELATCH_IMPL_PROXY(mFailureLatch)
+
+ private:
+ // Separate list of thread ids, it's much faster to do a linear search
+ // here than a vector of bigger items like mThreadStreamingContextList.
+ mozilla::Vector<ProfilerThreadId> mTIDList;
+ // Contexts corresponding to the thread id at the same indexes.
+ mozilla::Vector<ThreadStreamingContext> mThreadStreamingContextList;
+
+ mozilla::FailureLatch& mFailureLatch;
+
+ const mozilla::TimeStamp mProcessStartTime;
+
+ const double mSinceTime;
+};
+
+// Stream all samples and markers from aBuffer with the given aThreadId (or 0
+// for everything, which is assumed to be a single backtrace sample.)
+// Returns the thread id of the output sample(s), or 0 if none was present.
+ProfilerThreadId StreamSamplesAndMarkers(
+ const char* aName, ProfilerThreadId aThreadId, const ProfileBuffer& aBuffer,
+ SpliceableJSONWriter& aWriter, const nsACString& aProcessName,
+ const nsACString& aETLDplus1, const mozilla::TimeStamp& aProcessStartTime,
+ const mozilla::TimeStamp& aRegisterTime,
+ const mozilla::TimeStamp& aUnregisterTime, double aSinceTime,
+ UniqueStacks& aUniqueStacks, mozilla::ProgressLogger aProgressLogger);
+void StreamSamplesAndMarkers(const char* aName,
+ ThreadStreamingContext& aThreadData,
+ SpliceableJSONWriter& aWriter,
+ const nsACString& aProcessName,
+ const nsACString& aETLDplus1,
+ const mozilla::TimeStamp& aProcessStartTime,
+ const mozilla::TimeStamp& aRegisterTime,
+ const mozilla::TimeStamp& aUnregisterTime,
+ mozilla::ProgressLogger aProgressLogger);
+
+#endif // ProfiledThreadData_h
diff --git a/tools/profiler/core/ProfilerBacktrace.cpp b/tools/profiler/core/ProfilerBacktrace.cpp
new file mode 100644
index 0000000000..a264d85d64
--- /dev/null
+++ b/tools/profiler/core/ProfilerBacktrace.cpp
@@ -0,0 +1,101 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "ProfilerBacktrace.h"
+
+#include "ProfileBuffer.h"
+#include "ProfiledThreadData.h"
+
+#include "mozilla/ProfileJSONWriter.h"
+
+ProfilerBacktrace::ProfilerBacktrace(
+ const char* aName,
+ mozilla::UniquePtr<mozilla::ProfileChunkedBuffer>
+ aProfileChunkedBufferStorage,
+ mozilla::UniquePtr<ProfileBuffer>
+ aProfileBufferStorageOrNull /* = nullptr */)
+ : mName(aName),
+ mOptionalProfileChunkedBufferStorage(
+ std::move(aProfileChunkedBufferStorage)),
+ mProfileChunkedBuffer(mOptionalProfileChunkedBufferStorage.get()),
+ mOptionalProfileBufferStorage(std::move(aProfileBufferStorageOrNull)),
+ mProfileBuffer(mOptionalProfileBufferStorage.get()) {
+ MOZ_COUNT_CTOR(ProfilerBacktrace);
+ if (mProfileBuffer) {
+ MOZ_RELEASE_ASSERT(mProfileChunkedBuffer,
+ "If we take ownership of a ProfileBuffer, we must also "
+ "receive ownership of a ProfileChunkedBuffer");
+ MOZ_RELEASE_ASSERT(
+ mProfileChunkedBuffer == &mProfileBuffer->UnderlyingChunkedBuffer(),
+ "If we take ownership of a ProfileBuffer, we must also receive "
+ "ownership of its ProfileChunkedBuffer");
+ }
+ MOZ_ASSERT(
+ !mProfileChunkedBuffer || !mProfileChunkedBuffer->IsThreadSafe(),
+ "ProfilerBacktrace only takes a non-thread-safe ProfileChunkedBuffer");
+}
+
+ProfilerBacktrace::ProfilerBacktrace(
+ const char* aName,
+ mozilla::ProfileChunkedBuffer* aExternalProfileChunkedBuffer,
+ ProfileBuffer* aExternalProfileBuffer)
+ : mName(aName),
+ mProfileChunkedBuffer(aExternalProfileChunkedBuffer),
+ mProfileBuffer(aExternalProfileBuffer) {
+ MOZ_COUNT_CTOR(ProfilerBacktrace);
+ if (!mProfileChunkedBuffer) {
+ if (mProfileBuffer) {
+ // We don't have a ProfileChunkedBuffer but we have a ProfileBuffer, use
+ // the latter's ProfileChunkedBuffer.
+ mProfileChunkedBuffer = &mProfileBuffer->UnderlyingChunkedBuffer();
+ MOZ_ASSERT(!mProfileChunkedBuffer->IsThreadSafe(),
+ "ProfilerBacktrace only takes a non-thread-safe "
+ "ProfileChunkedBuffer");
+ }
+ } else {
+ if (mProfileBuffer) {
+ MOZ_RELEASE_ASSERT(
+ mProfileChunkedBuffer == &mProfileBuffer->UnderlyingChunkedBuffer(),
+ "If we reference both ProfileChunkedBuffer and ProfileBuffer, they "
+ "must already be connected");
+ }
+ MOZ_ASSERT(!mProfileChunkedBuffer->IsThreadSafe(),
+ "ProfilerBacktrace only takes a non-thread-safe "
+ "ProfileChunkedBuffer");
+ }
+}
+
+ProfilerBacktrace::~ProfilerBacktrace() { MOZ_COUNT_DTOR(ProfilerBacktrace); }
+
+ProfilerThreadId ProfilerBacktrace::StreamJSON(
+ SpliceableJSONWriter& aWriter, const mozilla::TimeStamp& aProcessStartTime,
+ UniqueStacks& aUniqueStacks) {
+ ProfilerThreadId processedThreadId;
+
+ // Unlike ProfiledThreadData::StreamJSON, we don't need to call
+ // ProfileBuffer::AddJITInfoForRange because ProfileBuffer does not contain
+ // any JitReturnAddr entries. For synchronous samples, JIT frames get expanded
+ // at sample time.
+ if (mProfileBuffer) {
+ processedThreadId = StreamSamplesAndMarkers(
+ mName.c_str(), ProfilerThreadId{}, *mProfileBuffer, aWriter, ""_ns,
+ ""_ns, aProcessStartTime,
+ /* aRegisterTime */ mozilla::TimeStamp(),
+ /* aUnregisterTime */ mozilla::TimeStamp(),
+ /* aSinceTime */ 0, aUniqueStacks, mozilla::ProgressLogger{});
+ } else if (mProfileChunkedBuffer) {
+ ProfileBuffer profileBuffer(*mProfileChunkedBuffer);
+ processedThreadId = StreamSamplesAndMarkers(
+ mName.c_str(), ProfilerThreadId{}, profileBuffer, aWriter, ""_ns, ""_ns,
+ aProcessStartTime,
+ /* aRegisterTime */ mozilla::TimeStamp(),
+ /* aUnregisterTime */ mozilla::TimeStamp(),
+ /* aSinceTime */ 0, aUniqueStacks, mozilla::ProgressLogger{});
+ }
+ // If there are no buffers, the backtrace is empty and nothing is streamed.
+
+ return processedThreadId;
+}
diff --git a/tools/profiler/core/ProfilerBacktrace.h b/tools/profiler/core/ProfilerBacktrace.h
new file mode 100644
index 0000000000..55811f4422
--- /dev/null
+++ b/tools/profiler/core/ProfilerBacktrace.h
@@ -0,0 +1,184 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef __PROFILER_BACKTRACE_H
+#define __PROFILER_BACKTRACE_H
+
+#include "ProfileBuffer.h"
+
+#include "mozilla/ProfileBufferEntrySerialization.h"
+#include "mozilla/UniquePtrExtensions.h"
+
+#include <string>
+
+class ProfileBuffer;
+class ProfilerCodeAddressService;
+class ThreadInfo;
+class UniqueStacks;
+
+namespace mozilla {
+class ProfileChunkedBuffer;
+class TimeStamp;
+namespace baseprofiler {
+class SpliceableJSONWriter;
+} // namespace baseprofiler
+} // namespace mozilla
+
+// ProfilerBacktrace encapsulates a synchronous sample.
+// It can work with a ProfileBuffer and/or a ProfileChunkedBuffer (if both, they
+// must already be linked together). The ProfileChunkedBuffer contains all the
+// data; the ProfileBuffer is not strictly needed, only provide it if it is
+// already available at the call site.
+// And these buffers can either be:
+// - owned here, so that the ProfilerBacktrace object can be kept for later
+// use), OR
+// - referenced through pointers (in cases where the backtrace is immediately
+// streamed out, so we only need temporary references to external buffers);
+// these pointers may be null for empty backtraces.
+class ProfilerBacktrace {
+ public:
+ // Take ownership of external buffers and use them to keep, and to stream a
+ // backtrace. If a ProfileBuffer is given, its underlying chunked buffer must
+ // be provided as well.
+ explicit ProfilerBacktrace(
+ const char* aName,
+ mozilla::UniquePtr<mozilla::ProfileChunkedBuffer>
+ aProfileChunkedBufferStorage,
+ mozilla::UniquePtr<ProfileBuffer> aProfileBufferStorageOrNull = nullptr);
+
+ // Take pointers to external buffers and use them to stream a backtrace.
+ // If null, the backtrace is effectively empty.
+ // If both are provided, they must already be connected.
+ explicit ProfilerBacktrace(
+ const char* aName,
+ mozilla::ProfileChunkedBuffer* aExternalProfileChunkedBufferOrNull =
+ nullptr,
+ ProfileBuffer* aExternalProfileBufferOrNull = nullptr);
+
+ ~ProfilerBacktrace();
+
+ [[nodiscard]] bool IsEmpty() const {
+ return !mProfileChunkedBuffer ||
+ mozilla::ProfileBufferEntryWriter::Serializer<
+ mozilla::ProfileChunkedBuffer>::Bytes(*mProfileChunkedBuffer) <=
+ mozilla::ULEB128Size(0u);
+ }
+
+ // ProfilerBacktraces' stacks are deduplicated in the context of the
+ // profile that contains the backtrace as a marker payload.
+ //
+ // That is, markers that contain backtraces should not need their own stack,
+ // frame, and string tables. They should instead reuse their parent
+ // profile's tables.
+ ProfilerThreadId StreamJSON(
+ mozilla::baseprofiler::SpliceableJSONWriter& aWriter,
+ const mozilla::TimeStamp& aProcessStartTime, UniqueStacks& aUniqueStacks);
+
+ private:
+ // Used to serialize a ProfilerBacktrace.
+ friend struct mozilla::ProfileBufferEntryWriter::Serializer<
+ ProfilerBacktrace>;
+ friend struct mozilla::ProfileBufferEntryReader::Deserializer<
+ ProfilerBacktrace>;
+
+ std::string mName;
+
+ // `ProfileChunkedBuffer` in which `mProfileBuffer` stores its data; must be
+ // located before `mProfileBuffer` so that it's destroyed after.
+ mozilla::UniquePtr<mozilla::ProfileChunkedBuffer>
+ mOptionalProfileChunkedBufferStorage;
+ // If null, there is no need to check mProfileBuffer's (if present) underlying
+ // buffer because this is done when constructed.
+ mozilla::ProfileChunkedBuffer* mProfileChunkedBuffer;
+
+ mozilla::UniquePtr<ProfileBuffer> mOptionalProfileBufferStorage;
+ ProfileBuffer* mProfileBuffer;
+};
+
+namespace mozilla {
+
+// Format: [ UniquePtr<BlockRingsBuffer> | name ]
+// Initial len==0 marks a nullptr or empty backtrace.
+template <>
+struct mozilla::ProfileBufferEntryWriter::Serializer<ProfilerBacktrace> {
+ static Length Bytes(const ProfilerBacktrace& aBacktrace) {
+ if (!aBacktrace.mProfileChunkedBuffer) {
+ // No buffer.
+ return ULEB128Size(0u);
+ }
+ auto bufferBytes = SumBytes(*aBacktrace.mProfileChunkedBuffer);
+ if (bufferBytes <= ULEB128Size(0u)) {
+ // Empty buffer.
+ return ULEB128Size(0u);
+ }
+ return bufferBytes + SumBytes(aBacktrace.mName);
+ }
+
+ static void Write(mozilla::ProfileBufferEntryWriter& aEW,
+ const ProfilerBacktrace& aBacktrace) {
+ if (!aBacktrace.mProfileChunkedBuffer ||
+ SumBytes(*aBacktrace.mProfileChunkedBuffer) <= ULEB128Size(0u)) {
+ // No buffer, or empty buffer.
+ aEW.WriteULEB128(0u);
+ return;
+ }
+ aEW.WriteObject(*aBacktrace.mProfileChunkedBuffer);
+ aEW.WriteObject(aBacktrace.mName);
+ }
+};
+
+template <typename Destructor>
+struct mozilla::ProfileBufferEntryWriter::Serializer<
+ mozilla::UniquePtr<ProfilerBacktrace, Destructor>> {
+ static Length Bytes(
+ const mozilla::UniquePtr<ProfilerBacktrace, Destructor>& aBacktrace) {
+ if (!aBacktrace) {
+ // Null backtrace pointer (treated like an empty backtrace).
+ return ULEB128Size(0u);
+ }
+ return SumBytes(*aBacktrace);
+ }
+
+ static void Write(
+ mozilla::ProfileBufferEntryWriter& aEW,
+ const mozilla::UniquePtr<ProfilerBacktrace, Destructor>& aBacktrace) {
+ if (!aBacktrace) {
+ // Null backtrace pointer (treated like an empty backtrace).
+ aEW.WriteULEB128(0u);
+ return;
+ }
+ aEW.WriteObject(*aBacktrace);
+ }
+};
+
+template <typename Destructor>
+struct mozilla::ProfileBufferEntryReader::Deserializer<
+ mozilla::UniquePtr<ProfilerBacktrace, Destructor>> {
+ static void ReadInto(
+ mozilla::ProfileBufferEntryReader& aER,
+ mozilla::UniquePtr<ProfilerBacktrace, Destructor>& aBacktrace) {
+ aBacktrace = Read(aER);
+ }
+
+ static mozilla::UniquePtr<ProfilerBacktrace, Destructor> Read(
+ mozilla::ProfileBufferEntryReader& aER) {
+ auto profileChunkedBuffer =
+ aER.ReadObject<UniquePtr<ProfileChunkedBuffer>>();
+ if (!profileChunkedBuffer) {
+ return nullptr;
+ }
+ MOZ_ASSERT(
+ !profileChunkedBuffer->IsThreadSafe(),
+ "ProfilerBacktrace only stores non-thread-safe ProfileChunkedBuffers");
+ std::string name = aER.ReadObject<std::string>();
+ return UniquePtr<ProfilerBacktrace, Destructor>{
+ new ProfilerBacktrace(name.c_str(), std::move(profileChunkedBuffer))};
+ }
+};
+
+} // namespace mozilla
+
+#endif // __PROFILER_BACKTRACE_H
diff --git a/tools/profiler/core/ProfilerBindings.cpp b/tools/profiler/core/ProfilerBindings.cpp
new file mode 100644
index 0000000000..c3af5c5b56
--- /dev/null
+++ b/tools/profiler/core/ProfilerBindings.cpp
@@ -0,0 +1,386 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+/* FFI functions for Profiler Rust API to call into profiler */
+
+#include "ProfilerBindings.h"
+
+#include "GeckoProfiler.h"
+
+#include <set>
+#include <type_traits>
+
+void gecko_profiler_register_thread(const char* aName) {
+ PROFILER_REGISTER_THREAD(aName);
+}
+
+void gecko_profiler_unregister_thread() { PROFILER_UNREGISTER_THREAD(); }
+
+void gecko_profiler_construct_label(mozilla::AutoProfilerLabel* aAutoLabel,
+ JS::ProfilingCategoryPair aCategoryPair) {
+#ifdef MOZ_GECKO_PROFILER
+ new (aAutoLabel) mozilla::AutoProfilerLabel(
+ "", nullptr, aCategoryPair,
+ uint32_t(
+ js::ProfilingStackFrame::Flags::LABEL_DETERMINED_BY_CATEGORY_PAIR));
+#endif
+}
+
+void gecko_profiler_destruct_label(mozilla::AutoProfilerLabel* aAutoLabel) {
+#ifdef MOZ_GECKO_PROFILER
+ aAutoLabel->~AutoProfilerLabel();
+#endif
+}
+
+void gecko_profiler_construct_timestamp_now(mozilla::TimeStamp* aTimeStamp) {
+ new (aTimeStamp) mozilla::TimeStamp(mozilla::TimeStamp::Now());
+}
+
+void gecko_profiler_clone_timestamp(const mozilla::TimeStamp* aSrcTimeStamp,
+ mozilla::TimeStamp* aDestTimeStamp) {
+ new (aDestTimeStamp) mozilla::TimeStamp(*aSrcTimeStamp);
+}
+
+void gecko_profiler_destruct_timestamp(mozilla::TimeStamp* aTimeStamp) {
+ aTimeStamp->~TimeStamp();
+}
+
+void gecko_profiler_add_timestamp(const mozilla::TimeStamp* aTimeStamp,
+ mozilla::TimeStamp* aDestTimeStamp,
+ double aMicroseconds) {
+ new (aDestTimeStamp) mozilla::TimeStamp(
+ *aTimeStamp + mozilla::TimeDuration::FromMicroseconds(aMicroseconds));
+}
+
+void gecko_profiler_subtract_timestamp(const mozilla::TimeStamp* aTimeStamp,
+ mozilla::TimeStamp* aDestTimeStamp,
+ double aMicroseconds) {
+ new (aDestTimeStamp) mozilla::TimeStamp(
+ *aTimeStamp - mozilla::TimeDuration::FromMicroseconds(aMicroseconds));
+}
+
+void gecko_profiler_construct_marker_timing_instant_at(
+ mozilla::MarkerTiming* aMarkerTiming, const mozilla::TimeStamp* aTime) {
+#ifdef MOZ_GECKO_PROFILER
+ static_assert(std::is_trivially_copyable_v<mozilla::MarkerTiming>);
+ mozilla::MarkerTiming::UnsafeConstruct(aMarkerTiming, *aTime,
+ mozilla::TimeStamp{},
+ mozilla::MarkerTiming::Phase::Instant);
+#endif
+}
+
+void gecko_profiler_construct_marker_timing_instant_now(
+ mozilla::MarkerTiming* aMarkerTiming) {
+#ifdef MOZ_GECKO_PROFILER
+ static_assert(std::is_trivially_copyable_v<mozilla::MarkerTiming>);
+ mozilla::MarkerTiming::UnsafeConstruct(
+ aMarkerTiming, mozilla::TimeStamp::Now(), mozilla::TimeStamp{},
+ mozilla::MarkerTiming::Phase::Instant);
+#endif
+}
+
+void gecko_profiler_construct_marker_timing_interval(
+ mozilla::MarkerTiming* aMarkerTiming, const mozilla::TimeStamp* aStartTime,
+ const mozilla::TimeStamp* aEndTime) {
+#ifdef MOZ_GECKO_PROFILER
+ static_assert(std::is_trivially_copyable_v<mozilla::MarkerTiming>);
+ mozilla::MarkerTiming::UnsafeConstruct(
+ aMarkerTiming, *aStartTime, *aEndTime,
+ mozilla::MarkerTiming::Phase::Interval);
+#endif
+}
+
+void gecko_profiler_construct_marker_timing_interval_until_now_from(
+ mozilla::MarkerTiming* aMarkerTiming,
+ const mozilla::TimeStamp* aStartTime) {
+#ifdef MOZ_GECKO_PROFILER
+ static_assert(std::is_trivially_copyable_v<mozilla::MarkerTiming>);
+ mozilla::MarkerTiming::UnsafeConstruct(
+ aMarkerTiming, *aStartTime, mozilla::TimeStamp::Now(),
+ mozilla::MarkerTiming::Phase::Interval);
+#endif
+}
+
+void gecko_profiler_construct_marker_timing_interval_start(
+ mozilla::MarkerTiming* aMarkerTiming, const mozilla::TimeStamp* aTime) {
+#ifdef MOZ_GECKO_PROFILER
+ static_assert(std::is_trivially_copyable_v<mozilla::MarkerTiming>);
+ mozilla::MarkerTiming::UnsafeConstruct(
+ aMarkerTiming, *aTime, mozilla::TimeStamp{},
+ mozilla::MarkerTiming::Phase::IntervalStart);
+#endif
+}
+
+void gecko_profiler_construct_marker_timing_interval_end(
+ mozilla::MarkerTiming* aMarkerTiming, const mozilla::TimeStamp* aTime) {
+#ifdef MOZ_GECKO_PROFILER
+ static_assert(std::is_trivially_copyable_v<mozilla::MarkerTiming>);
+ mozilla::MarkerTiming::UnsafeConstruct(
+ aMarkerTiming, mozilla::TimeStamp{}, *aTime,
+ mozilla::MarkerTiming::Phase::IntervalEnd);
+#endif
+}
+
+void gecko_profiler_destruct_marker_timing(
+ mozilla::MarkerTiming* aMarkerTiming) {
+#ifdef MOZ_GECKO_PROFILER
+ aMarkerTiming->~MarkerTiming();
+#endif
+}
+
+void gecko_profiler_construct_marker_schema(
+ mozilla::MarkerSchema* aMarkerSchema,
+ const mozilla::MarkerSchema::Location* aLocations, size_t aLength) {
+#ifdef MOZ_GECKO_PROFILER
+ new (aMarkerSchema) mozilla::MarkerSchema(aLocations, aLength);
+#endif
+}
+
+void gecko_profiler_construct_marker_schema_with_special_front_end_location(
+ mozilla::MarkerSchema* aMarkerSchema) {
+#ifdef MOZ_GECKO_PROFILER
+ new (aMarkerSchema)
+ mozilla::MarkerSchema(mozilla::MarkerSchema::SpecialFrontendLocation{});
+#endif
+}
+
+void gecko_profiler_destruct_marker_schema(
+ mozilla::MarkerSchema* aMarkerSchema) {
+#ifdef MOZ_GECKO_PROFILER
+ aMarkerSchema->~MarkerSchema();
+#endif
+}
+
+void gecko_profiler_marker_schema_set_chart_label(
+ mozilla::MarkerSchema* aSchema, const char* aLabel, size_t aLabelLength) {
+#ifdef MOZ_GECKO_PROFILER
+ aSchema->SetChartLabel(std::string(aLabel, aLabelLength));
+#endif
+}
+
+void gecko_profiler_marker_schema_set_tooltip_label(
+ mozilla::MarkerSchema* aSchema, const char* aLabel, size_t aLabelLength) {
+#ifdef MOZ_GECKO_PROFILER
+ aSchema->SetTooltipLabel(std::string(aLabel, aLabelLength));
+#endif
+}
+
+void gecko_profiler_marker_schema_set_table_label(
+ mozilla::MarkerSchema* aSchema, const char* aLabel, size_t aLabelLength) {
+#ifdef MOZ_GECKO_PROFILER
+ aSchema->SetTableLabel(std::string(aLabel, aLabelLength));
+#endif
+}
+
+void gecko_profiler_marker_schema_set_all_labels(mozilla::MarkerSchema* aSchema,
+ const char* aLabel,
+ size_t aLabelLength) {
+#ifdef MOZ_GECKO_PROFILER
+ aSchema->SetAllLabels(std::string(aLabel, aLabelLength));
+#endif
+}
+
+void gecko_profiler_marker_schema_add_key_format(
+ mozilla::MarkerSchema* aSchema, const char* aKey, size_t aKeyLength,
+ mozilla::MarkerSchema::Format aFormat) {
+#ifdef MOZ_GECKO_PROFILER
+ aSchema->AddKeyFormat(std::string(aKey, aKeyLength), aFormat);
+#endif
+}
+
+void gecko_profiler_marker_schema_add_key_label_format(
+ mozilla::MarkerSchema* aSchema, const char* aKey, size_t aKeyLength,
+ const char* aLabel, size_t aLabelLength,
+ mozilla::MarkerSchema::Format aFormat) {
+#ifdef MOZ_GECKO_PROFILER
+ aSchema->AddKeyLabelFormat(std::string(aKey, aKeyLength),
+ std::string(aLabel, aLabelLength), aFormat);
+#endif
+}
+
+void gecko_profiler_marker_schema_add_key_format_searchable(
+ mozilla::MarkerSchema* aSchema, const char* aKey, size_t aKeyLength,
+ mozilla::MarkerSchema::Format aFormat,
+ mozilla::MarkerSchema::Searchable aSearchable) {
+#ifdef MOZ_GECKO_PROFILER
+ aSchema->AddKeyFormatSearchable(std::string(aKey, aKeyLength), aFormat,
+ aSearchable);
+#endif
+}
+
+void gecko_profiler_marker_schema_add_key_label_format_searchable(
+ mozilla::MarkerSchema* aSchema, const char* aKey, size_t aKeyLength,
+ const char* aLabel, size_t aLabelLength,
+ mozilla::MarkerSchema::Format aFormat,
+ mozilla::MarkerSchema::Searchable aSearchable) {
+#ifdef MOZ_GECKO_PROFILER
+ aSchema->AddKeyLabelFormatSearchable(std::string(aKey, aKeyLength),
+ std::string(aLabel, aLabelLength),
+ aFormat, aSearchable);
+#endif
+}
+
+void gecko_profiler_marker_schema_add_static_label_value(
+ mozilla::MarkerSchema* aSchema, const char* aLabel, size_t aLabelLength,
+ const char* aValue, size_t aValueLength) {
+#ifdef MOZ_GECKO_PROFILER
+ aSchema->AddStaticLabelValue(std::string(aLabel, aLabelLength),
+ std::string(aValue, aValueLength));
+#endif
+}
+
+void gecko_profiler_marker_schema_stream(
+ mozilla::baseprofiler::SpliceableJSONWriter* aWriter, const char* aName,
+ size_t aNameLength, mozilla::MarkerSchema* aMarkerSchema,
+ void* aStreamedNamesSet) {
+#ifdef MOZ_GECKO_PROFILER
+ auto* streamedNames = static_cast<std::set<std::string>*>(aStreamedNamesSet);
+ // std::set.insert(T&&) returns a pair, its `second` is true if the element
+ // was actually inserted (i.e., it was not there yet.).
+ const bool didInsert =
+ streamedNames->insert(std::string(aName, aNameLength)).second;
+ if (didInsert) {
+ std::move(*aMarkerSchema)
+ .Stream(*aWriter, mozilla::Span(aName, aNameLength));
+ }
+#endif
+}
+
+void gecko_profiler_json_writer_int_property(
+ mozilla::baseprofiler::SpliceableJSONWriter* aWriter, const char* aName,
+ size_t aNameLength, int64_t aValue) {
+#ifdef MOZ_GECKO_PROFILER
+ aWriter->IntProperty(mozilla::Span(aName, aNameLength), aValue);
+#endif
+}
+
+void gecko_profiler_json_writer_float_property(
+ mozilla::baseprofiler::SpliceableJSONWriter* aWriter, const char* aName,
+ size_t aNameLength, double aValue) {
+#ifdef MOZ_GECKO_PROFILER
+ aWriter->DoubleProperty(mozilla::Span(aName, aNameLength), aValue);
+#endif
+}
+
+void gecko_profiler_json_writer_bool_property(
+ mozilla::baseprofiler::SpliceableJSONWriter* aWriter, const char* aName,
+ size_t aNameLength, bool aValue) {
+#ifdef MOZ_GECKO_PROFILER
+ aWriter->BoolProperty(mozilla::Span(aName, aNameLength), aValue);
+#endif
+}
+void gecko_profiler_json_writer_string_property(
+ mozilla::baseprofiler::SpliceableJSONWriter* aWriter, const char* aName,
+ size_t aNameLength, const char* aValue, size_t aValueLength) {
+#ifdef MOZ_GECKO_PROFILER
+ aWriter->StringProperty(mozilla::Span(aName, aNameLength),
+ mozilla::Span(aValue, aValueLength));
+#endif
+}
+
+void gecko_profiler_json_writer_null_property(
+ mozilla::baseprofiler::SpliceableJSONWriter* aWriter, const char* aName,
+ size_t aNameLength) {
+#ifdef MOZ_GECKO_PROFILER
+ aWriter->NullProperty(mozilla::Span(aName, aNameLength));
+#endif
+}
+
+void gecko_profiler_add_marker_untyped(
+ const char* aName, size_t aNameLength,
+ mozilla::baseprofiler::ProfilingCategoryPair aCategoryPair,
+ mozilla::MarkerTiming* aMarkerTiming,
+ mozilla::StackCaptureOptions aStackCaptureOptions) {
+#ifdef MOZ_GECKO_PROFILER
+ profiler_add_marker(
+ mozilla::ProfilerString8View(aName, aNameLength),
+ mozilla::MarkerCategory{aCategoryPair},
+ mozilla::MarkerOptions(
+ std::move(*aMarkerTiming),
+ mozilla::MarkerStack::WithCaptureOptions(aStackCaptureOptions)));
+#endif
+}
+
+void gecko_profiler_add_marker_text(
+ const char* aName, size_t aNameLength,
+ mozilla::baseprofiler::ProfilingCategoryPair aCategoryPair,
+ mozilla::MarkerTiming* aMarkerTiming,
+ mozilla::StackCaptureOptions aStackCaptureOptions, const char* aText,
+ size_t aTextLength) {
+#ifdef MOZ_GECKO_PROFILER
+ profiler_add_marker(
+ mozilla::ProfilerString8View(aName, aNameLength),
+ mozilla::MarkerCategory{aCategoryPair},
+ mozilla::MarkerOptions(
+ std::move(*aMarkerTiming),
+ mozilla::MarkerStack::WithCaptureOptions(aStackCaptureOptions)),
+ geckoprofiler::markers::TextMarker{},
+ mozilla::ProfilerString8View(aText, aTextLength));
+#endif
+}
+
+void gecko_profiler_add_marker(
+ const char* aName, size_t aNameLength,
+ mozilla::baseprofiler::ProfilingCategoryPair aCategoryPair,
+ mozilla::MarkerTiming* aMarkerTiming,
+ mozilla::StackCaptureOptions aStackCaptureOptions, uint8_t aMarkerTag,
+ const uint8_t* aPayload, size_t aPayloadSize) {
+#ifdef MOZ_GECKO_PROFILER
+ // Copy the marker timing and create the marker option.
+ mozilla::MarkerOptions markerOptions(
+ std::move(*aMarkerTiming),
+ mozilla::MarkerStack::WithCaptureOptions(aStackCaptureOptions));
+
+ // Currently it's not possible to add a threadId option, but we will
+ // have it soon.
+ if (markerOptions.ThreadId().IsUnspecified()) {
+ // If yet unspecified, set thread to this thread where the marker is added.
+ markerOptions.Set(mozilla::MarkerThreadId::CurrentThread());
+ }
+
+ auto& buffer = profiler_get_core_buffer();
+ mozilla::Span payload(aPayload, aPayloadSize);
+
+ mozilla::StackCaptureOptions captureOptions =
+ markerOptions.Stack().CaptureOptions();
+ if (captureOptions != mozilla::StackCaptureOptions::NoStack &&
+ // Do not capture a stack if the NoMarkerStacks feature is set.
+ profiler_active_without_feature(ProfilerFeature::NoMarkerStacks)) {
+ // A capture was requested, let's attempt to do it here&now. This avoids a
+ // lot of allocations that would be necessary if capturing a backtrace
+ // separately.
+ // TODO use a local on-stack byte buffer to remove last allocation.
+ // TODO reduce internal profiler stack levels, see bug 1659872.
+ mozilla::ProfileBufferChunkManagerSingle chunkManager(
+ mozilla::ProfileBufferChunkManager::scExpectedMaximumStackSize);
+ mozilla::ProfileChunkedBuffer chunkedBuffer(
+ mozilla::ProfileChunkedBuffer::ThreadSafety::WithoutMutex,
+ chunkManager);
+ markerOptions.StackRef().UseRequestedBacktrace(
+ profiler_capture_backtrace_into(chunkedBuffer, captureOptions)
+ ? &chunkedBuffer
+ : nullptr);
+
+ // This call must be made from here, while chunkedBuffer is in scope.
+ buffer.PutObjects(
+ mozilla::ProfileBufferEntryKind::Marker, markerOptions,
+ mozilla::ProfilerString8View(aName, aNameLength),
+ mozilla::MarkerCategory{aCategoryPair},
+ mozilla::base_profiler_markers_detail::Streaming::DeserializerTag(
+ aMarkerTag),
+ mozilla::MarkerPayloadType::Rust, payload);
+ return;
+ }
+
+ buffer.PutObjects(
+ mozilla::ProfileBufferEntryKind::Marker, markerOptions,
+ mozilla::ProfilerString8View(aName, aNameLength),
+ mozilla::MarkerCategory{aCategoryPair},
+ mozilla::base_profiler_markers_detail::Streaming::DeserializerTag(
+ aMarkerTag),
+ mozilla::MarkerPayloadType::Rust, payload);
+#endif
+}
diff --git a/tools/profiler/core/ProfilerCodeAddressService.cpp b/tools/profiler/core/ProfilerCodeAddressService.cpp
new file mode 100644
index 0000000000..5a65e06379
--- /dev/null
+++ b/tools/profiler/core/ProfilerCodeAddressService.cpp
@@ -0,0 +1,75 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "ProfilerCodeAddressService.h"
+
+#include "platform.h"
+#include "mozilla/StackWalk.h"
+
+using namespace mozilla;
+
+#if defined(XP_LINUX) || defined(XP_FREEBSD)
+static char* SearchSymbolTable(SymbolTable& aTable, uint32_t aOffset) {
+ size_t index;
+ bool exact =
+ BinarySearch(aTable.mAddrs, 0, aTable.mAddrs.Length(), aOffset, &index);
+
+ if (index == 0 && !exact) {
+ // Our offset is before the first symbol in the table; no result.
+ return nullptr;
+ }
+
+ // Extract the (mangled) symbol name out of the string table.
+ auto strings = reinterpret_cast<char*>(aTable.mBuffer.Elements());
+ nsCString symbol;
+ symbol.Append(strings + aTable.mIndex[index - 1],
+ aTable.mIndex[index] - aTable.mIndex[index - 1]);
+
+ // First try demangling as a Rust identifier.
+ char demangled[1024];
+ if (!profiler_demangle_rust(symbol.get(), demangled,
+ ArrayLength(demangled))) {
+ // Then as a C++ identifier.
+ DemangleSymbol(symbol.get(), demangled, ArrayLength(demangled));
+ }
+ demangled[ArrayLength(demangled) - 1] = '\0';
+
+ // Use the mangled name if we didn't successfully demangle.
+ return strdup(demangled[0] != '\0' ? demangled : symbol.get());
+}
+#endif
+
+bool ProfilerCodeAddressService::GetFunction(const void* aPc,
+ nsACString& aResult) {
+ Entry& entry = GetEntry(aPc);
+
+#if defined(XP_LINUX) || defined(XP_FREEBSD)
+ // On Linux, most symbols will not be found by the MozDescribeCodeAddress call
+ // that GetEntry does. So we read the symbol table directly from the ELF
+ // image.
+
+ // SymbolTable currently assumes library offsets will not be larger than
+ // 4 GiB.
+ if (entry.mLOffset <= 0xFFFFFFFF && !entry.mFunction) {
+ auto p = mSymbolTables.lookupForAdd(entry.mLibrary);
+ if (!p) {
+ if (!mSymbolTables.add(p, entry.mLibrary, SymbolTable())) {
+ MOZ_CRASH("ProfilerCodeAddressService OOM");
+ }
+ profiler_get_symbol_table(entry.mLibrary, nullptr, &p->value());
+ }
+ entry.mFunction =
+ SearchSymbolTable(p->value(), static_cast<uint32_t>(entry.mLOffset));
+ }
+#endif
+
+ if (!entry.mFunction || entry.mFunction[0] == '\0') {
+ return false;
+ }
+
+ aResult = nsDependentCString(entry.mFunction);
+ return true;
+}
diff --git a/tools/profiler/core/ProfilerMarkers.cpp b/tools/profiler/core/ProfilerMarkers.cpp
new file mode 100644
index 0000000000..7c299678d1
--- /dev/null
+++ b/tools/profiler/core/ProfilerMarkers.cpp
@@ -0,0 +1,32 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "mozilla/ProfilerMarkers.h"
+
+template mozilla::ProfileBufferBlockIndex AddMarkerToBuffer(
+ mozilla::ProfileChunkedBuffer&, const mozilla::ProfilerString8View&,
+ const mozilla::MarkerCategory&, mozilla::MarkerOptions&&,
+ mozilla::baseprofiler::markers::NoPayload);
+
+template mozilla::ProfileBufferBlockIndex AddMarkerToBuffer(
+ mozilla::ProfileChunkedBuffer&, const mozilla::ProfilerString8View&,
+ const mozilla::MarkerCategory&, mozilla::MarkerOptions&&,
+ mozilla::baseprofiler::markers::TextMarker, const std::string&);
+
+template mozilla::ProfileBufferBlockIndex profiler_add_marker(
+ const mozilla::ProfilerString8View&, const mozilla::MarkerCategory&,
+ mozilla::MarkerOptions&&, mozilla::baseprofiler::markers::TextMarker,
+ const std::string&);
+
+template mozilla::ProfileBufferBlockIndex profiler_add_marker(
+ const mozilla::ProfilerString8View&, const mozilla::MarkerCategory&,
+ mozilla::MarkerOptions&&, mozilla::baseprofiler::markers::TextMarker,
+ const nsCString&);
+
+template mozilla::ProfileBufferBlockIndex profiler_add_marker(
+ const mozilla::ProfilerString8View&, const mozilla::MarkerCategory&,
+ mozilla::MarkerOptions&&, mozilla::baseprofiler::markers::Tracing,
+ const mozilla::ProfilerString8View&);
diff --git a/tools/profiler/core/ProfilerThreadRegistration.cpp b/tools/profiler/core/ProfilerThreadRegistration.cpp
new file mode 100644
index 0000000000..c81d00573d
--- /dev/null
+++ b/tools/profiler/core/ProfilerThreadRegistration.cpp
@@ -0,0 +1,198 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "mozilla/ProfilerThreadRegistration.h"
+
+#include "mozilla/ProfilerMarkers.h"
+#include "mozilla/ProfilerThreadRegistry.h"
+#include "nsString.h"
+#ifdef MOZ_GECKO_PROFILER
+# include "platform.h"
+#else
+# define profiler_mark_thread_awake()
+# define profiler_mark_thread_asleep()
+#endif
+
+namespace mozilla::profiler {
+
+/* static */
+MOZ_THREAD_LOCAL(ThreadRegistration*) ThreadRegistration::tlsThreadRegistration;
+
+ThreadRegistration::ThreadRegistration(const char* aName, const void* aStackTop)
+ : mData(aName, aStackTop) {
+ auto* tls = GetTLS();
+ if (MOZ_UNLIKELY(!tls)) {
+ // No TLS, nothing can be done without it.
+ return;
+ }
+
+ if (ThreadRegistration* rootRegistration = tls->get(); rootRegistration) {
+ // This is a nested ThreadRegistration object, so the thread is already
+ // registered in the TLS and ThreadRegistry and we don't need to register
+ // again.
+ MOZ_ASSERT(
+ mData.Info().ThreadId() == rootRegistration->mData.Info().ThreadId(),
+ "Thread being re-registered has changed its TID");
+ // TODO: Use new name. This is currently not possible because the
+ // TLS-stored RegisteredThread's ThreadInfo cannot be changed.
+ // In the meantime, we record a marker that could be used in the frontend.
+ PROFILER_MARKER_TEXT("Nested ThreadRegistration()", OTHER_Profiling,
+ MarkerOptions{},
+ ProfilerString8View::WrapNullTerminatedString(aName));
+ return;
+ }
+
+ tls->set(this);
+ ThreadRegistry::Register(OnThreadRef{*this});
+ profiler_mark_thread_awake();
+}
+
+ThreadRegistration::~ThreadRegistration() {
+ MOZ_ASSERT(profiler_current_thread_id() == mData.mInfo.ThreadId(),
+ "ThreadRegistration must be destroyed on its thread");
+ MOZ_ASSERT(!mDataMutex.IsLockedOnCurrentThread(),
+ "Mutex shouldn't be locked here, as it's about to be destroyed "
+ "in ~ThreadRegistration()");
+ auto* tls = GetTLS();
+ if (MOZ_UNLIKELY(!tls)) {
+ // No TLS, nothing can be done without it.
+ return;
+ }
+
+ if (ThreadRegistration* rootRegistration = tls->get(); rootRegistration) {
+ if (rootRegistration != this) {
+ // `this` is not in the TLS, so it was a nested registration, there is
+ // nothing to unregister yet.
+ PROFILER_MARKER_TEXT(
+ "Nested ~ThreadRegistration()", OTHER_Profiling, MarkerOptions{},
+ ProfilerString8View::WrapNullTerminatedString(mData.Info().Name()));
+ return;
+ }
+
+ profiler_mark_thread_asleep();
+#ifdef NIGHTLY_BUILD
+ mData.RecordWakeCount();
+#endif
+ ThreadRegistry::Unregister(OnThreadRef{*this});
+#ifdef DEBUG
+ // After ThreadRegistry::Unregister, other threads should not be able to
+ // find this ThreadRegistration, and shouldn't have kept any reference to
+ // it across the ThreadRegistry mutex.
+ MOZ_ASSERT(mDataMutex.TryLock(),
+ "Mutex shouldn't be locked in any thread, as it's about to be "
+ "destroyed in ~ThreadRegistration()");
+ // Undo the above successful TryLock.
+ mDataMutex.Unlock();
+#endif // DEBUG
+
+ tls->set(nullptr);
+ return;
+ }
+
+ // Already removed from the TLS!? This could happen with improperly-nested
+ // register/unregister calls, and the first ThreadRegistration has already
+ // been unregistered.
+ // We cannot record a marker on this thread because it was already
+ // unregistered. Send it to the main thread (unless this *is* already the
+ // main thread, which has been unregistered); this may be useful to catch
+ // mismatched register/unregister pairs in Firefox.
+ if (!profiler_is_main_thread()) {
+ nsAutoCString threadId("thread id: ");
+ threadId.AppendInt(profiler_current_thread_id().ToNumber());
+ threadId.AppendLiteral(", name: \"");
+ threadId.AppendASCII(mData.Info().Name());
+ threadId.AppendLiteral("\"");
+ PROFILER_MARKER_TEXT(
+ "~ThreadRegistration() but TLS is empty", OTHER_Profiling,
+ MarkerOptions(MarkerThreadId::MainThread(), MarkerStack::Capture()),
+ threadId);
+ }
+}
+
+/* static */
+ProfilingStack* ThreadRegistration::RegisterThread(const char* aName,
+ const void* aStackTop) {
+ auto* tls = GetTLS();
+ if (MOZ_UNLIKELY(!tls)) {
+ // No TLS, nothing can be done without it.
+ return nullptr;
+ }
+
+ if (ThreadRegistration* rootRegistration = tls->get(); rootRegistration) {
+ // Already registered, record the extra depth to ignore the matching
+ // UnregisterThread.
+ ++rootRegistration->mOtherRegistrations;
+ // TODO: Use new name. This is currently not possible because the
+ // TLS-stored RegisteredThread's ThreadInfo cannot be changed.
+ // In the meantime, we record a marker that could be used in the frontend.
+ PROFILER_MARKER_TEXT("Nested ThreadRegistration::RegisterThread()",
+ OTHER_Profiling, MarkerOptions{},
+ ProfilerString8View::WrapNullTerminatedString(aName));
+ return &rootRegistration->mData.mProfilingStack;
+ }
+
+ // Create on heap, it self-registers with the TLS (its effective owner, so
+ // we can forget the pointer after this), and with the Profiler.
+ ThreadRegistration* tr = new ThreadRegistration(aName, aStackTop);
+ tr->mIsOnHeap = true;
+ return &tr->mData.mProfilingStack;
+}
+
+/* static */
+void ThreadRegistration::UnregisterThread() {
+ auto* tls = GetTLS();
+ if (MOZ_UNLIKELY(!tls)) {
+ // No TLS, nothing can be done without it.
+ return;
+ }
+
+ if (ThreadRegistration* rootRegistration = tls->get(); rootRegistration) {
+ if (rootRegistration->mOtherRegistrations != 0) {
+ // This is assumed to be a matching UnregisterThread() for a nested
+ // RegisterThread(). Decrease depth and we're done.
+ --rootRegistration->mOtherRegistrations;
+ // We don't know what name was used in the related RegisterThread().
+ PROFILER_MARKER_UNTYPED("Nested ThreadRegistration::UnregisterThread()",
+ OTHER_Profiling);
+ return;
+ }
+
+ if (!rootRegistration->mIsOnHeap) {
+ // The root registration was not added by `RegisterThread()`, so it
+ // shouldn't be deleted!
+ // This could happen if there are un-paired `UnregisterThread` calls when
+ // the initial registration (still alive) was done on the stack. We don't
+ // know what name was used in the related RegisterThread().
+ PROFILER_MARKER_UNTYPED("Excess ThreadRegistration::UnregisterThread()",
+ OTHER_Profiling, MarkerStack::Capture());
+ return;
+ }
+
+ // This is the last `UnregisterThread()` that should match the first
+ // `RegisterThread()` that created this ThreadRegistration on the heap.
+ // Just delete this root registration, it will de-register itself from the
+ // TLS (and from the Profiler).
+ delete rootRegistration;
+ return;
+ }
+
+ // There is no known ThreadRegistration for this thread, ignore this
+ // request. We cannot record a marker on this thread because it was already
+ // unregistered. Send it to the main thread (unless this *is* already the
+ // main thread, which has been unregistered); this may be useful to catch
+ // mismatched register/unregister pairs in Firefox.
+ if (!profiler_is_main_thread()) {
+ nsAutoCString threadId("thread id: ");
+ threadId.AppendInt(profiler_current_thread_id().ToNumber());
+ PROFILER_MARKER_TEXT(
+ "ThreadRegistration::UnregisterThread() but TLS is empty",
+ OTHER_Profiling,
+ MarkerOptions(MarkerThreadId::MainThread(), MarkerStack::Capture()),
+ threadId);
+ }
+}
+
+} // namespace mozilla::profiler
diff --git a/tools/profiler/core/ProfilerThreadRegistrationData.cpp b/tools/profiler/core/ProfilerThreadRegistrationData.cpp
new file mode 100644
index 0000000000..e70f9e749a
--- /dev/null
+++ b/tools/profiler/core/ProfilerThreadRegistrationData.cpp
@@ -0,0 +1,303 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "mozilla/ProfilerThreadRegistrationData.h"
+
+#include "mozilla/FOGIPC.h"
+#include "mozilla/glean/GleanMetrics.h"
+#include "mozilla/ProfilerMarkers.h"
+#include "js/AllocationRecording.h"
+#include "js/ProfilingStack.h"
+
+#if defined(XP_WIN)
+# include <windows.h>
+#elif defined(XP_DARWIN)
+# include <pthread.h>
+#endif
+
+#ifdef NIGHTLY_BUILD
+namespace geckoprofiler::markers {
+
+using namespace mozilla;
+
+struct ThreadCpuUseMarker {
+ static constexpr Span<const char> MarkerTypeName() {
+ return MakeStringSpan("ThreadCpuUse");
+ }
+ static void StreamJSONMarkerData(baseprofiler::SpliceableJSONWriter& aWriter,
+ ProfilerThreadId aThreadId,
+ int64_t aCpuTimeMs, int64_t aWakeUps,
+ const ProfilerString8View& aThreadName) {
+ aWriter.IntProperty("threadId", static_cast<int64_t>(aThreadId.ToNumber()));
+ aWriter.IntProperty("time", aCpuTimeMs);
+ aWriter.IntProperty("wakeups", aWakeUps);
+ aWriter.StringProperty("label", aThreadName);
+ }
+ static MarkerSchema MarkerTypeDisplay() {
+ using MS = MarkerSchema;
+ MS schema{MS::Location::MarkerChart, MS::Location::MarkerTable};
+ schema.AddKeyLabelFormat("time", "CPU Time", MS::Format::Milliseconds);
+ schema.AddKeyLabelFormat("wakeups", "Wake ups", MS::Format::Integer);
+ schema.SetTooltipLabel("{marker.name} - {marker.data.label}");
+ schema.SetTableLabel(
+ "{marker.name} - {marker.data.label}: {marker.data.time} of CPU time, "
+ "{marker.data.wakeups} wake ups");
+ return schema;
+ }
+};
+
+} // namespace geckoprofiler::markers
+#endif
+
+namespace mozilla::profiler {
+
+ThreadRegistrationData::ThreadRegistrationData(const char* aName,
+ const void* aStackTop)
+ : mInfo(aName),
+ mPlatformData(mInfo.ThreadId()),
+ mStackTop(
+#if defined(XP_WIN)
+ // We don't have to guess on Windows.
+ reinterpret_cast<const void*>(
+ reinterpret_cast<PNT_TIB>(NtCurrentTeb())->StackBase)
+#elif defined(XP_DARWIN)
+ // We don't have to guess on Mac/Darwin.
+ reinterpret_cast<const void*>(
+ pthread_get_stackaddr_np(pthread_self()))
+#else
+ // Otherwise use the given guess.
+ aStackTop
+#endif
+ ) {
+}
+
+// This is a simplified version of profiler_add_marker that can be easily passed
+// into the JS engine.
+static void profiler_add_js_marker(const char* aMarkerName,
+ const char* aMarkerText) {
+ PROFILER_MARKER_TEXT(
+ mozilla::ProfilerString8View::WrapNullTerminatedString(aMarkerName), JS,
+ {}, mozilla::ProfilerString8View::WrapNullTerminatedString(aMarkerText));
+}
+
+static void profiler_add_js_allocation_marker(JS::RecordAllocationInfo&& info) {
+ if (!profiler_thread_is_being_profiled_for_markers()) {
+ return;
+ }
+
+ struct JsAllocationMarker {
+ static constexpr mozilla::Span<const char> MarkerTypeName() {
+ return mozilla::MakeStringSpan("JS allocation");
+ }
+ static void StreamJSONMarkerData(
+ mozilla::baseprofiler::SpliceableJSONWriter& aWriter,
+ const mozilla::ProfilerString16View& aTypeName,
+ const mozilla::ProfilerString8View& aClassName,
+ const mozilla::ProfilerString16View& aDescriptiveTypeName,
+ const mozilla::ProfilerString8View& aCoarseType, uint64_t aSize,
+ bool aInNursery) {
+ if (aClassName.Length() != 0) {
+ aWriter.StringProperty("className", aClassName);
+ }
+ if (aTypeName.Length() != 0) {
+ aWriter.StringProperty("typeName", NS_ConvertUTF16toUTF8(aTypeName));
+ }
+ if (aDescriptiveTypeName.Length() != 0) {
+ aWriter.StringProperty("descriptiveTypeName",
+ NS_ConvertUTF16toUTF8(aDescriptiveTypeName));
+ }
+ aWriter.StringProperty("coarseType", aCoarseType);
+ aWriter.IntProperty("size", aSize);
+ aWriter.BoolProperty("inNursery", aInNursery);
+ }
+ static mozilla::MarkerSchema MarkerTypeDisplay() {
+ return mozilla::MarkerSchema::SpecialFrontendLocation{};
+ }
+ };
+
+ profiler_add_marker(
+ "JS allocation", geckoprofiler::category::JS,
+ mozilla::MarkerStack::Capture(), JsAllocationMarker{},
+ mozilla::ProfilerString16View::WrapNullTerminatedString(info.typeName),
+ mozilla::ProfilerString8View::WrapNullTerminatedString(info.className),
+ mozilla::ProfilerString16View::WrapNullTerminatedString(
+ info.descriptiveTypeName),
+ mozilla::ProfilerString8View::WrapNullTerminatedString(info.coarseType),
+ info.size, info.inNursery);
+}
+
+void ThreadRegistrationLockedRWFromAnyThread::SetProfilingFeaturesAndData(
+ ThreadProfilingFeatures aProfilingFeatures,
+ ProfiledThreadData* aProfiledThreadData, const PSAutoLock&) {
+ MOZ_ASSERT(mProfilingFeatures == ThreadProfilingFeatures::NotProfiled);
+ mProfilingFeatures = aProfilingFeatures;
+
+ MOZ_ASSERT(!mProfiledThreadData);
+ MOZ_ASSERT(aProfiledThreadData);
+ mProfiledThreadData = aProfiledThreadData;
+
+ if (mJSContext) {
+ // The thread is now being profiled, and we already have a JSContext,
+ // allocate a JsFramesBuffer to allow profiler-unlocked on-thread sampling.
+ MOZ_ASSERT(!mJsFrameBuffer);
+ mJsFrameBuffer = new JsFrame[MAX_JS_FRAMES];
+ }
+
+ // Check invariants.
+ MOZ_ASSERT((mProfilingFeatures != ThreadProfilingFeatures::NotProfiled) ==
+ !!mProfiledThreadData);
+ MOZ_ASSERT((mJSContext &&
+ (mProfilingFeatures != ThreadProfilingFeatures::NotProfiled)) ==
+ !!mJsFrameBuffer);
+}
+
+void ThreadRegistrationLockedRWFromAnyThread::ClearProfilingFeaturesAndData(
+ const PSAutoLock&) {
+ mProfilingFeatures = ThreadProfilingFeatures::NotProfiled;
+ mProfiledThreadData = nullptr;
+
+ if (mJsFrameBuffer) {
+ delete[] mJsFrameBuffer;
+ mJsFrameBuffer = nullptr;
+ }
+
+ // Check invariants.
+ MOZ_ASSERT((mProfilingFeatures != ThreadProfilingFeatures::NotProfiled) ==
+ !!mProfiledThreadData);
+ MOZ_ASSERT((mJSContext &&
+ (mProfilingFeatures != ThreadProfilingFeatures::NotProfiled)) ==
+ !!mJsFrameBuffer);
+}
+
+void ThreadRegistrationLockedRWOnThread::SetJSContext(JSContext* aJSContext) {
+ MOZ_ASSERT(aJSContext && !mJSContext);
+
+ mJSContext = aJSContext;
+
+ if (mProfiledThreadData) {
+ MOZ_ASSERT((mProfilingFeatures != ThreadProfilingFeatures::NotProfiled) ==
+ !!mProfiledThreadData);
+ // We now have a JSContext, and the thread is already being profiled,
+ // allocate a JsFramesBuffer to allow profiler-unlocked on-thread sampling.
+ MOZ_ASSERT(!mJsFrameBuffer);
+ mJsFrameBuffer = new JsFrame[MAX_JS_FRAMES];
+ }
+
+ // We give the JS engine a non-owning reference to the ProfilingStack. It's
+ // important that the JS engine doesn't touch this once the thread dies.
+ js::SetContextProfilingStack(aJSContext, &ProfilingStackRef());
+
+ // Check invariants.
+ MOZ_ASSERT((mJSContext &&
+ (mProfilingFeatures != ThreadProfilingFeatures::NotProfiled)) ==
+ !!mJsFrameBuffer);
+}
+
+void ThreadRegistrationLockedRWOnThread::ClearJSContext() {
+ mJSContext = nullptr;
+
+ if (mJsFrameBuffer) {
+ delete[] mJsFrameBuffer;
+ mJsFrameBuffer = nullptr;
+ }
+
+ // Check invariants.
+ MOZ_ASSERT((mJSContext &&
+ (mProfilingFeatures != ThreadProfilingFeatures::NotProfiled)) ==
+ !!mJsFrameBuffer);
+}
+
+void ThreadRegistrationLockedRWOnThread::PollJSSampling() {
+ // We can't start/stop profiling until we have the thread's JSContext.
+ if (mJSContext) {
+ // It is possible for mJSSampling to go through the following sequences.
+ //
+ // - INACTIVE, ACTIVE_REQUESTED, INACTIVE_REQUESTED, INACTIVE
+ //
+ // - ACTIVE, INACTIVE_REQUESTED, ACTIVE_REQUESTED, ACTIVE
+ //
+ // Therefore, the if and else branches here aren't always interleaved.
+ // This is ok because the JS engine can handle that.
+ //
+ if (mJSSampling == ACTIVE_REQUESTED) {
+ mJSSampling = ACTIVE;
+ js::EnableContextProfilingStack(mJSContext, true);
+
+ if (JSAllocationsEnabled()) {
+ // TODO - This probability should not be hardcoded. See Bug 1547284.
+ JS::EnableRecordingAllocations(mJSContext,
+ profiler_add_js_allocation_marker, 0.01);
+ }
+ js::RegisterContextProfilingEventMarker(mJSContext,
+ profiler_add_js_marker);
+
+ } else if (mJSSampling == INACTIVE_REQUESTED) {
+ mJSSampling = INACTIVE;
+ js::EnableContextProfilingStack(mJSContext, false);
+
+ if (JSAllocationsEnabled()) {
+ JS::DisableRecordingAllocations(mJSContext);
+ }
+ }
+ }
+}
+
+#ifdef NIGHTLY_BUILD
+void ThreadRegistrationUnlockedConstReaderAndAtomicRW::RecordWakeCount() const {
+ baseprofiler::detail::BaseProfilerAutoLock lock(mRecordWakeCountMutex);
+
+ uint64_t newWakeCount = mWakeCount - mAlreadyRecordedWakeCount;
+ if (newWakeCount == 0 && mSleep != AWAKE) {
+ // If no new wake-up was counted, and the thread is not marked awake,
+ // we can be pretty sure there is no CPU activity to record.
+ // Threads that are never annotated as asleep/awake (typically rust threads)
+ // start as awake.
+ return;
+ }
+
+ uint64_t cpuTimeNs;
+ if (!GetCpuTimeSinceThreadStartInNs(&cpuTimeNs, PlatformDataCRef())) {
+ cpuTimeNs = 0;
+ }
+
+ constexpr uint64_t NS_PER_MS = 1'000'000;
+ uint64_t cpuTimeMs = cpuTimeNs / NS_PER_MS;
+
+ uint64_t newCpuTimeMs = MOZ_LIKELY(cpuTimeMs > mAlreadyRecordedCpuTimeInMs)
+ ? cpuTimeMs - mAlreadyRecordedCpuTimeInMs
+ : 0;
+
+ if (!newWakeCount && !newCpuTimeMs) {
+ // Nothing to report, avoid computing the Glean friendly thread name.
+ return;
+ }
+
+ nsAutoCString threadName(mInfo.Name());
+ // Trim the trailing number of threads that are part of a thread pool.
+ for (size_t length = threadName.Length(); length > 0; --length) {
+ const char c = threadName.CharAt(length - 1);
+ if ((c < '0' || c > '9') && c != '#' && c != ' ') {
+ if (length != threadName.Length()) {
+ threadName.SetLength(length);
+ }
+ break;
+ }
+ }
+
+ mozilla::glean::RecordThreadCpuUse(threadName, newCpuTimeMs, newWakeCount);
+
+ // The thread id is provided as part of the payload because this call is
+ // inside a ThreadRegistration data function, which could be invoked with
+ // the ThreadRegistry locked. We cannot call any function/option that could
+ // attempt to lock the ThreadRegistry again, like MarkerThreadId.
+ PROFILER_MARKER("Thread CPU use", OTHER, {}, ThreadCpuUseMarker,
+ mInfo.ThreadId(), newCpuTimeMs, newWakeCount, threadName);
+ mAlreadyRecordedCpuTimeInMs = cpuTimeMs;
+ mAlreadyRecordedWakeCount += newWakeCount;
+}
+#endif
+
+} // namespace mozilla::profiler
diff --git a/tools/profiler/core/ProfilerThreadRegistry.cpp b/tools/profiler/core/ProfilerThreadRegistry.cpp
new file mode 100644
index 0000000000..cb456471d9
--- /dev/null
+++ b/tools/profiler/core/ProfilerThreadRegistry.cpp
@@ -0,0 +1,40 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "mozilla/ProfilerThreadRegistry.h"
+
+namespace mozilla::profiler {
+
+/* static */
+ThreadRegistry::RegistryContainer ThreadRegistry::sRegistryContainer;
+
+/* static */
+ThreadRegistry::RegistryMutex ThreadRegistry::sRegistryMutex;
+
+#if !defined(MOZ_GECKO_PROFILER)
+// When MOZ_GECKO_PROFILER is not defined, the function definitions in
+// platform.cpp are not built, causing link errors. So we keep these simple
+// definitions here.
+
+/* static */
+void ThreadRegistry::Register(ThreadRegistration::OnThreadRef aOnThreadRef) {
+ LockedRegistry lock;
+ MOZ_RELEASE_ASSERT(sRegistryContainer.append(OffThreadRef{aOnThreadRef}));
+}
+
+/* static */
+void ThreadRegistry::Unregister(ThreadRegistration::OnThreadRef aOnThreadRef) {
+ LockedRegistry lock;
+ for (OffThreadRef& thread : sRegistryContainer) {
+ if (thread.IsPointingAt(*aOnThreadRef.mThreadRegistration)) {
+ sRegistryContainer.erase(&thread);
+ break;
+ }
+ }
+}
+#endif // !defined(MOZ_GECKO_PROFILER)
+
+} // namespace mozilla::profiler
diff --git a/tools/profiler/core/ProfilerUtils.cpp b/tools/profiler/core/ProfilerUtils.cpp
new file mode 100644
index 0000000000..6a46878ad7
--- /dev/null
+++ b/tools/profiler/core/ProfilerUtils.cpp
@@ -0,0 +1,118 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+// This file implements functions from ProfilerUtils.h on all platforms.
+// Functions with platform-specific implementations are separated in #if blocks
+// below, with each block being self-contained with all the #includes and
+// definitions it needs, to keep platform code easier to maintain in isolation.
+
+#include "mozilla/ProfilerUtils.h"
+
+// --------------------------------------------- Windows process & thread ids
+#if defined(XP_WIN)
+
+# include <process.h>
+# include <processthreadsapi.h>
+
+ProfilerProcessId profiler_current_process_id() {
+ return ProfilerProcessId::FromNativeId(_getpid());
+}
+
+ProfilerThreadId profiler_current_thread_id() {
+ static_assert(std::is_same_v<ProfilerThreadId::NativeType,
+ decltype(GetCurrentThreadId())>,
+ "ProfilerThreadId::NativeType must be exactly the type "
+ "returned by GetCurrentThreadId()");
+ return ProfilerThreadId::FromNativeId(GetCurrentThreadId());
+}
+
+// --------------------------------------------- Non-Windows process id
+#else
+// All non-Windows platforms are assumed to be POSIX, which has getpid().
+
+# include <unistd.h>
+
+ProfilerProcessId profiler_current_process_id() {
+ return ProfilerProcessId::FromNativeId(getpid());
+}
+
+// --------------------------------------------- Non-Windows thread id
+// ------------------------------------------------------- macOS
+# if defined(XP_MACOSX)
+
+# include <pthread.h>
+
+ProfilerThreadId profiler_current_thread_id() {
+ uint64_t tid;
+ if (pthread_threadid_np(nullptr, &tid) != 0) {
+ return ProfilerThreadId{};
+ }
+ return ProfilerThreadId::FromNativeId(tid);
+}
+
+// ------------------------------------------------------- Android
+// Test Android before Linux, because Linux includes Android.
+# elif defined(__ANDROID__) || defined(ANDROID)
+
+ProfilerThreadId profiler_current_thread_id() {
+ return ProfilerThreadId::FromNativeId(gettid());
+}
+
+// ------------------------------------------------------- Linux
+# elif defined(XP_LINUX)
+
+# include <sys/syscall.h>
+
+ProfilerThreadId profiler_current_thread_id() {
+ // glibc doesn't provide a wrapper for gettid() until 2.30
+ return ProfilerThreadId::FromNativeId(syscall(SYS_gettid));
+}
+
+// ------------------------------------------------------- FreeBSD
+# elif defined(XP_FREEBSD)
+
+# include <sys/thr.h>
+
+ProfilerThreadId profiler_current_thread_id() {
+ long id;
+ if (thr_self(&id) != 0) {
+ return ProfilerThreadId{};
+ }
+ return ProfilerThreadId::FromNativeId(id);
+}
+
+// ------------------------------------------------------- Others
+# else
+
+ProfilerThreadId profiler_current_thread_id() {
+ return ProfilerThreadId::FromNativeId(std::this_thread::get_id());
+}
+
+# endif
+#endif // End of non-XP_WIN.
+
+// --------------------------------------------- Platform-agnostic definitions
+
+#include "MainThreadUtils.h"
+#include "mozilla/Assertions.h"
+
+static ProfilerThreadId scProfilerMainThreadId;
+
+void profiler_init_main_thread_id() {
+ MOZ_ASSERT(NS_IsMainThread());
+ mozilla::baseprofiler::profiler_init_main_thread_id();
+ if (!scProfilerMainThreadId.IsSpecified()) {
+ scProfilerMainThreadId = profiler_current_thread_id();
+ }
+}
+
+[[nodiscard]] ProfilerThreadId profiler_main_thread_id() {
+ return scProfilerMainThreadId;
+}
+
+[[nodiscard]] bool profiler_is_main_thread() {
+ return profiler_current_thread_id() == scProfilerMainThreadId;
+}
diff --git a/tools/profiler/core/VTuneProfiler.cpp b/tools/profiler/core/VTuneProfiler.cpp
new file mode 100644
index 0000000000..58a39c51ee
--- /dev/null
+++ b/tools/profiler/core/VTuneProfiler.cpp
@@ -0,0 +1,80 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifdef XP_WIN
+# undef UNICODE
+# undef _UNICODE
+#endif
+
+#include "VTuneProfiler.h"
+#include "mozilla/Bootstrap.h"
+#include <memory>
+
+VTuneProfiler* VTuneProfiler::mInstance = nullptr;
+
+void VTuneProfiler::Initialize() {
+ // This is just a 'dirty trick' to find out if the ittnotify DLL was found.
+ // If it wasn't this function always returns 0, otherwise it returns
+ // incrementing numbers, if the library was found this wastes 2 events but
+ // that should be okay.
+ __itt_event testEvent =
+ __itt_event_create("Test event", strlen("Test event"));
+ testEvent = __itt_event_create("Test event 2", strlen("Test event 2"));
+
+ if (testEvent) {
+ mInstance = new VTuneProfiler();
+ }
+}
+
+void VTuneProfiler::Shutdown() {}
+
+void VTuneProfiler::TraceInternal(const char* aName, TracingKind aKind) {
+ std::string str(aName);
+
+ auto iter = mStrings.find(str);
+
+ __itt_event event;
+ if (iter != mStrings.end()) {
+ event = iter->second;
+ } else {
+ event = __itt_event_create(aName, str.length());
+ mStrings.insert({str, event});
+ }
+
+ if (aKind == TRACING_INTERVAL_START || aKind == TRACING_EVENT) {
+ // VTune will consider starts not matched with an end to be single point in
+ // time events.
+ __itt_event_start(event);
+ } else {
+ __itt_event_end(event);
+ }
+}
+
+void VTuneProfiler::RegisterThreadInternal(const char* aName) {
+ std::string str(aName);
+
+ if (!str.compare("GeckoMain")) {
+ // Process main thread.
+ switch (XRE_GetProcessType()) {
+ case GeckoProcessType::GeckoProcessType_Default:
+ __itt_thread_set_name("Main Process");
+ break;
+ case GeckoProcessType::GeckoProcessType_Content:
+ __itt_thread_set_name("Content Process");
+ break;
+ case GeckoProcessType::GeckoProcessType_GMPlugin:
+ __itt_thread_set_name("Plugin Process");
+ break;
+ case GeckoProcessType::GeckoProcessType_GPU:
+ __itt_thread_set_name("GPU Process");
+ break;
+ default:
+ __itt_thread_set_name("Unknown Process");
+ }
+ return;
+ }
+ __itt_thread_set_name(aName);
+}
diff --git a/tools/profiler/core/VTuneProfiler.h b/tools/profiler/core/VTuneProfiler.h
new file mode 100644
index 0000000000..e3abe6b90d
--- /dev/null
+++ b/tools/profiler/core/VTuneProfiler.h
@@ -0,0 +1,78 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef VTuneProfiler_h
+#define VTuneProfiler_h
+
+// The intent here is to add 0 overhead for regular users. In order to build
+// the VTune profiler code at all --enable-vtune-instrumentation needs to be
+// set as a build option. Even then, when none of the environment variables
+// is specified that allow us to find the ittnotify DLL, these functions
+// should be minimal overhead. When starting Firefox under VTune, these
+// env vars will be automatically defined, otherwise INTEL_LIBITTNOTIFY32/64
+// should be set to point at the ittnotify DLL.
+#ifndef MOZ_VTUNE_INSTRUMENTATION
+
+# define VTUNE_INIT()
+# define VTUNE_SHUTDOWN()
+
+# define VTUNE_TRACING(name, kind)
+# define VTUNE_REGISTER_THREAD(name)
+
+#else
+
+# include "GeckoProfiler.h"
+
+// This is the regular Intel header, these functions are actually defined for
+// us inside js/src/vtune by an intel C file which actually dynamically resolves
+// them to the correct DLL. Through libxul these will 'magically' resolve.
+# include "vtune/ittnotify.h"
+
+# include <stddef.h>
+# include <unordered_map>
+# include <string>
+
+class VTuneProfiler {
+ public:
+ static void Initialize();
+ static void Shutdown();
+
+ enum TracingKind {
+ TRACING_EVENT,
+ TRACING_INTERVAL_START,
+ TRACING_INTERVAL_END,
+ };
+
+ static void Trace(const char* aName, TracingKind aKind) {
+ if (mInstance) {
+ mInstance->TraceInternal(aName, aKind);
+ }
+ }
+ static void RegisterThread(const char* aName) {
+ if (mInstance) {
+ mInstance->RegisterThreadInternal(aName);
+ }
+ }
+
+ private:
+ void TraceInternal(const char* aName, TracingKind aKind);
+ void RegisterThreadInternal(const char* aName);
+
+ // This is null when the ittnotify DLL could not be found.
+ static VTuneProfiler* mInstance;
+
+ std::unordered_map<std::string, __itt_event> mStrings;
+};
+
+# define VTUNE_INIT() VTuneProfiler::Initialize()
+# define VTUNE_SHUTDOWN() VTuneProfiler::Shutdown()
+
+# define VTUNE_TRACING(name, kind) VTuneProfiler::Trace(name, kind)
+# define VTUNE_REGISTER_THREAD(name) VTuneProfiler::RegisterThread(name)
+
+#endif
+
+#endif /* VTuneProfiler_h */
diff --git a/tools/profiler/core/memory_hooks.cpp b/tools/profiler/core/memory_hooks.cpp
new file mode 100644
index 0000000000..59e87d607c
--- /dev/null
+++ b/tools/profiler/core/memory_hooks.cpp
@@ -0,0 +1,632 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "memory_hooks.h"
+
+#include "nscore.h"
+
+#include "mozilla/Assertions.h"
+#include "mozilla/Atomics.h"
+#include "mozilla/FastBernoulliTrial.h"
+#include "mozilla/IntegerPrintfMacros.h"
+#include "mozilla/JSONWriter.h"
+#include "mozilla/MemoryReporting.h"
+#include "mozilla/PlatformMutex.h"
+#include "mozilla/ProfilerCounts.h"
+#include "mozilla/ThreadLocal.h"
+
+#include "GeckoProfiler.h"
+#include "prenv.h"
+#include "replace_malloc.h"
+
+#include <ctype.h>
+#include <errno.h>
+#include <limits.h>
+#include <stdarg.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#ifdef XP_WIN
+# include <windows.h>
+# include <process.h>
+#else
+# include <pthread.h>
+# include <sys/types.h>
+# include <unistd.h>
+#endif
+
+#ifdef ANDROID
+# include <android/log.h>
+#endif
+
+// The counters start out as a nullptr, and then get initialized only once. They
+// are never destroyed, as it would cause race conditions for the memory hooks
+// that use the counters. This helps guard against potentially expensive
+// operations like using a mutex.
+//
+// In addition, this is a raw pointer and not a UniquePtr, as the counter
+// machinery will try and de-register itself from the profiler. This could
+// happen after the profiler and its PSMutex was already destroyed, resulting in
+// a crash.
+static ProfilerCounterTotal* sCounter;
+
+// The gBernoulli value starts out as a nullptr, and only gets initialized once.
+// It then lives for the entire lifetime of the process. It cannot be deleted
+// without additional multi-threaded protections, since if we deleted it during
+// profiler_stop then there could be a race between threads already in a
+// memory hook that might try to access the value after or during deletion.
+static mozilla::FastBernoulliTrial* gBernoulli;
+
+namespace mozilla::profiler {
+
+//---------------------------------------------------------------------------
+// Utilities
+//---------------------------------------------------------------------------
+
+// Returns true or or false depending on whether the marker was actually added
+// or not.
+static bool profiler_add_native_allocation_marker(int64_t aSize,
+ uintptr_t aMemoryAddress) {
+ if (!profiler_thread_is_being_profiled_for_markers(
+ profiler_main_thread_id())) {
+ return false;
+ }
+
+ // Because native allocations may be intercepted anywhere, blocking while
+ // locking the profiler mutex here could end up causing a deadlock if another
+ // mutex is taken, which the profiler may indirectly need elsewhere.
+ // See bug 1642726 for such a scenario.
+ // So instead we bail out if the mutex is already locked. Native allocations
+ // are statistically sampled anyway, so missing a few because of this is
+ // acceptable.
+ if (profiler_is_locked_on_current_thread()) {
+ return false;
+ }
+
+ struct NativeAllocationMarker {
+ static constexpr mozilla::Span<const char> MarkerTypeName() {
+ return mozilla::MakeStringSpan("Native allocation");
+ }
+ static void StreamJSONMarkerData(
+ mozilla::baseprofiler::SpliceableJSONWriter& aWriter, int64_t aSize,
+ uintptr_t aMemoryAddress, ProfilerThreadId aThreadId) {
+ aWriter.IntProperty("size", aSize);
+ aWriter.IntProperty("memoryAddress",
+ static_cast<int64_t>(aMemoryAddress));
+ // Tech note: If `ToNumber()` returns a uint64_t, the conversion to
+ // int64_t is "implementation-defined" before C++20. This is acceptable
+ // here, because this is a one-way conversion to a unique identifier
+ // that's used to visually separate data by thread on the front-end.
+ aWriter.IntProperty("threadId",
+ static_cast<int64_t>(aThreadId.ToNumber()));
+ }
+ static mozilla::MarkerSchema MarkerTypeDisplay() {
+ return mozilla::MarkerSchema::SpecialFrontendLocation{};
+ }
+ };
+
+ profiler_add_marker("Native allocation", geckoprofiler::category::OTHER,
+ {MarkerThreadId::MainThread(), MarkerStack::Capture()},
+ NativeAllocationMarker{}, aSize, aMemoryAddress,
+ profiler_current_thread_id());
+ return true;
+}
+
+static malloc_table_t gMallocTable;
+
+// This is only needed because of the |const void*| vs |void*| arg mismatch.
+static size_t MallocSizeOf(const void* aPtr) {
+ return gMallocTable.malloc_usable_size(const_cast<void*>(aPtr));
+}
+
+// The values for the Bernoulli trial are taken from DMD. According to DMD:
+//
+// In testing, a probability of 0.003 resulted in ~25% of heap blocks getting
+// a stack trace and ~80% of heap bytes getting a stack trace. (This is
+// possible because big heap blocks are more likely to get a stack trace.)
+//
+// The random number seeds are arbitrary and were obtained from random.org.
+//
+// However this value resulted in a lot of slowdown since the profiler stacks
+// are pretty heavy to collect. The value was lowered to 10% of the original to
+// 0.0003.
+static void EnsureBernoulliIsInstalled() {
+ if (!gBernoulli) {
+ // This is only installed once. See the gBernoulli definition for more
+ // information.
+ gBernoulli =
+ new FastBernoulliTrial(0.0003, 0x8e26eeee166bc8ca, 0x56820f304a9c9ae0);
+ }
+}
+
+// This class provides infallible allocations (they abort on OOM) like
+// mozalloc's InfallibleAllocPolicy, except that memory hooks are bypassed. This
+// policy is used by the HashSet.
+class InfallibleAllocWithoutHooksPolicy {
+ static void ExitOnFailure(const void* aP) {
+ if (!aP) {
+ MOZ_CRASH("Profiler memory hooks out of memory; aborting");
+ }
+ }
+
+ public:
+ template <typename T>
+ static T* maybe_pod_malloc(size_t aNumElems) {
+ if (aNumElems & mozilla::tl::MulOverflowMask<sizeof(T)>::value) {
+ return nullptr;
+ }
+ return (T*)gMallocTable.malloc(aNumElems * sizeof(T));
+ }
+
+ template <typename T>
+ static T* maybe_pod_calloc(size_t aNumElems) {
+ return (T*)gMallocTable.calloc(aNumElems, sizeof(T));
+ }
+
+ template <typename T>
+ static T* maybe_pod_realloc(T* aPtr, size_t aOldSize, size_t aNewSize) {
+ if (aNewSize & mozilla::tl::MulOverflowMask<sizeof(T)>::value) {
+ return nullptr;
+ }
+ return (T*)gMallocTable.realloc(aPtr, aNewSize * sizeof(T));
+ }
+
+ template <typename T>
+ static T* pod_malloc(size_t aNumElems) {
+ T* p = maybe_pod_malloc<T>(aNumElems);
+ ExitOnFailure(p);
+ return p;
+ }
+
+ template <typename T>
+ static T* pod_calloc(size_t aNumElems) {
+ T* p = maybe_pod_calloc<T>(aNumElems);
+ ExitOnFailure(p);
+ return p;
+ }
+
+ template <typename T>
+ static T* pod_realloc(T* aPtr, size_t aOldSize, size_t aNewSize) {
+ T* p = maybe_pod_realloc(aPtr, aOldSize, aNewSize);
+ ExitOnFailure(p);
+ return p;
+ }
+
+ template <typename T>
+ static void free_(T* aPtr, size_t aSize = 0) {
+ gMallocTable.free(aPtr);
+ }
+
+ static void reportAllocOverflow() { ExitOnFailure(nullptr); }
+ bool checkSimulatedOOM() const { return true; }
+};
+
+// We can't use mozilla::Mutex because it causes re-entry into the memory hooks.
+// Define a custom implementation here.
+class Mutex : private ::mozilla::detail::MutexImpl {
+ public:
+ Mutex() : ::mozilla::detail::MutexImpl() {}
+
+ void Lock() { ::mozilla::detail::MutexImpl::lock(); }
+ void Unlock() { ::mozilla::detail::MutexImpl::unlock(); }
+};
+
+class MutexAutoLock {
+ MutexAutoLock(const MutexAutoLock&) = delete;
+ void operator=(const MutexAutoLock&) = delete;
+
+ Mutex& mMutex;
+
+ public:
+ explicit MutexAutoLock(Mutex& aMutex) : mMutex(aMutex) { mMutex.Lock(); }
+ ~MutexAutoLock() { mMutex.Unlock(); }
+};
+
+//---------------------------------------------------------------------------
+// Tracked allocations
+//---------------------------------------------------------------------------
+
+// The allocation tracker is shared between multiple threads, and is the
+// coordinator for knowing when allocations have been tracked. The mutable
+// internal state is protected by a mutex, and managed by the methods.
+//
+// The tracker knows about all the allocations that we have added to the
+// profiler. This way, whenever any given piece of memory is freed, we can see
+// if it was previously tracked, and we can track its deallocation.
+
+class AllocationTracker {
+ // This type tracks all of the allocations that we have captured. This way, we
+ // can see if a deallocation is inside of this set. We want to provide a
+ // balanced view into the allocations and deallocations.
+ typedef mozilla::HashSet<const void*, mozilla::DefaultHasher<const void*>,
+ InfallibleAllocWithoutHooksPolicy>
+ AllocationSet;
+
+ public:
+ AllocationTracker() : mAllocations(), mMutex() {}
+
+ void AddMemoryAddress(const void* memoryAddress) {
+ MutexAutoLock lock(mMutex);
+ if (!mAllocations.put(memoryAddress)) {
+ MOZ_CRASH("Out of memory while tracking native allocations.");
+ };
+ }
+
+ void Reset() {
+ MutexAutoLock lock(mMutex);
+ mAllocations.clearAndCompact();
+ }
+
+ // Returns true when the memory address is found and removed, otherwise that
+ // memory address is not being tracked and it returns false.
+ bool RemoveMemoryAddressIfFound(const void* memoryAddress) {
+ MutexAutoLock lock(mMutex);
+
+ auto ptr = mAllocations.lookup(memoryAddress);
+ if (ptr) {
+ // The memory was present. It no longer needs to be tracked.
+ mAllocations.remove(ptr);
+ return true;
+ }
+
+ return false;
+ }
+
+ private:
+ AllocationSet mAllocations;
+ Mutex mMutex MOZ_UNANNOTATED;
+};
+
+static AllocationTracker* gAllocationTracker;
+
+static void EnsureAllocationTrackerIsInstalled() {
+ if (!gAllocationTracker) {
+ // This is only installed once.
+ gAllocationTracker = new AllocationTracker();
+ }
+}
+
+//---------------------------------------------------------------------------
+// Per-thread blocking of intercepts
+//---------------------------------------------------------------------------
+
+// On MacOS, and Linux the first __thread/thread_local access calls malloc,
+// which leads to an infinite loop. So we use pthread-based TLS instead, which
+// somehow doesn't have this problem.
+#if !defined(XP_DARWIN) && !defined(XP_LINUX)
+# define PROFILER_THREAD_LOCAL(T) MOZ_THREAD_LOCAL(T)
+#else
+# define PROFILER_THREAD_LOCAL(T) \
+ ::mozilla::detail::ThreadLocal<T, ::mozilla::detail::ThreadLocalKeyStorage>
+#endif
+
+// This class is used to determine if allocations on this thread should be
+// intercepted or not.
+// Creating a ThreadIntercept object on the stack will implicitly block nested
+// ones. There are other reasons to block: The feature is off, or we're inside a
+// profiler function that is locking a mutex.
+class MOZ_RAII ThreadIntercept {
+ // When set to true, malloc does not intercept additional allocations. This is
+ // needed because collecting stacks creates new allocations. When blocked,
+ // these allocations are then ignored by the memory hook.
+ static PROFILER_THREAD_LOCAL(bool) tlsIsBlocked;
+
+ // This is a quick flag to check and see if the allocations feature is enabled
+ // or disabled.
+ static mozilla::Atomic<bool, mozilla::Relaxed> sAllocationsFeatureEnabled;
+
+ // True if this ThreadIntercept has set tlsIsBlocked.
+ bool mIsBlockingTLS;
+
+ // True if interception is blocked for any reason.
+ bool mIsBlocked;
+
+ public:
+ static void Init() {
+ tlsIsBlocked.infallibleInit();
+ // infallibleInit should zero-initialize, which corresponds to `false`.
+ MOZ_ASSERT(!tlsIsBlocked.get());
+ }
+
+ ThreadIntercept() {
+ // If the allocation interception feature is enabled, and the TLS is not
+ // blocked yet, we will block the TLS now, and unblock on destruction.
+ mIsBlockingTLS = sAllocationsFeatureEnabled && !tlsIsBlocked.get();
+ if (mIsBlockingTLS) {
+ MOZ_ASSERT(!tlsIsBlocked.get());
+ tlsIsBlocked.set(true);
+ // Since this is the top-level ThreadIntercept, interceptions are not
+ // blocked unless the profiler itself holds a locked mutex, in which case
+ // we don't want to intercept allocations that originate from such a
+ // profiler call.
+ mIsBlocked = profiler_is_locked_on_current_thread();
+ } else {
+ // The feature is off, or the TLS was already blocked, then we block this
+ // interception.
+ mIsBlocked = true;
+ }
+ }
+
+ ~ThreadIntercept() {
+ if (mIsBlockingTLS) {
+ MOZ_ASSERT(tlsIsBlocked.get());
+ tlsIsBlocked.set(false);
+ }
+ }
+
+ // Is this ThreadIntercept effectively blocked? (Feature is off, or this
+ // ThreadIntercept is nested, or we're inside a locked-Profiler function.)
+ bool IsBlocked() const { return mIsBlocked; }
+
+ static void EnableAllocationFeature() { sAllocationsFeatureEnabled = true; }
+
+ static void DisableAllocationFeature() { sAllocationsFeatureEnabled = false; }
+};
+
+PROFILER_THREAD_LOCAL(bool) ThreadIntercept::tlsIsBlocked;
+
+mozilla::Atomic<bool, mozilla::Relaxed>
+ ThreadIntercept::sAllocationsFeatureEnabled(false);
+
+//---------------------------------------------------------------------------
+// malloc/free callbacks
+//---------------------------------------------------------------------------
+
+static void AllocCallback(void* aPtr, size_t aReqSize) {
+ if (!aPtr) {
+ return;
+ }
+
+ // The first part of this function does not allocate.
+ size_t actualSize = gMallocTable.malloc_usable_size(aPtr);
+ if (actualSize > 0) {
+ sCounter->Add(actualSize);
+ }
+
+ ThreadIntercept threadIntercept;
+ if (threadIntercept.IsBlocked()) {
+ // Either the native allocations feature is not turned on, or we may be
+ // recursing into a memory hook, return. We'll still collect counter
+ // information about this allocation, but no stack.
+ return;
+ }
+
+ AUTO_PROFILER_LABEL("AllocCallback", PROFILER);
+
+ // Perform a bernoulli trial, which will return true or false based on its
+ // configured probability. It takes into account the byte size so that
+ // larger allocations are weighted heavier than smaller allocations.
+ MOZ_ASSERT(gBernoulli,
+ "gBernoulli must be properly installed for the memory hooks.");
+ if (
+ // First perform the Bernoulli trial.
+ gBernoulli->trial(actualSize) &&
+ // Second, attempt to add a marker if the Bernoulli trial passed.
+ profiler_add_native_allocation_marker(
+ static_cast<int64_t>(actualSize),
+ reinterpret_cast<uintptr_t>(aPtr))) {
+ MOZ_ASSERT(gAllocationTracker,
+ "gAllocationTracker must be properly installed for the memory "
+ "hooks.");
+ // Only track the memory if the allocation marker was actually added to the
+ // profiler.
+ gAllocationTracker->AddMemoryAddress(aPtr);
+ }
+
+ // We're ignoring aReqSize here
+}
+
+static void FreeCallback(void* aPtr) {
+ if (!aPtr) {
+ return;
+ }
+
+ // The first part of this function does not allocate.
+ size_t unsignedSize = MallocSizeOf(aPtr);
+ int64_t signedSize = -(static_cast<int64_t>(unsignedSize));
+ sCounter->Add(signedSize);
+
+ ThreadIntercept threadIntercept;
+ if (threadIntercept.IsBlocked()) {
+ // Either the native allocations feature is not turned on, or we may be
+ // recursing into a memory hook, return. We'll still collect counter
+ // information about this allocation, but no stack.
+ return;
+ }
+
+ AUTO_PROFILER_LABEL("FreeCallback", PROFILER);
+
+ // Perform a bernoulli trial, which will return true or false based on its
+ // configured probability. It takes into account the byte size so that
+ // larger allocations are weighted heavier than smaller allocations.
+ MOZ_ASSERT(
+ gAllocationTracker,
+ "gAllocationTracker must be properly installed for the memory hooks.");
+ if (gAllocationTracker->RemoveMemoryAddressIfFound(aPtr)) {
+ // This size here is negative, indicating a deallocation.
+ profiler_add_native_allocation_marker(signedSize,
+ reinterpret_cast<uintptr_t>(aPtr));
+ }
+}
+
+} // namespace mozilla::profiler
+
+//---------------------------------------------------------------------------
+// malloc/free interception
+//---------------------------------------------------------------------------
+
+using namespace mozilla::profiler;
+
+static void* replace_malloc(size_t aSize) {
+ // This must be a call to malloc from outside. Intercept it.
+ void* ptr = gMallocTable.malloc(aSize);
+ AllocCallback(ptr, aSize);
+ return ptr;
+}
+
+static void* replace_calloc(size_t aCount, size_t aSize) {
+ void* ptr = gMallocTable.calloc(aCount, aSize);
+ AllocCallback(ptr, aCount * aSize);
+ return ptr;
+}
+
+static void* replace_realloc(void* aOldPtr, size_t aSize) {
+ // If |aOldPtr| is nullptr, the call is equivalent to |malloc(aSize)|.
+ if (!aOldPtr) {
+ return replace_malloc(aSize);
+ }
+
+ FreeCallback(aOldPtr);
+ void* ptr = gMallocTable.realloc(aOldPtr, aSize);
+ if (ptr) {
+ AllocCallback(ptr, aSize);
+ } else {
+ // If realloc fails, we undo the prior operations by re-inserting the old
+ // pointer into the live block table. We don't have to do anything with the
+ // dead block list because the dead block hasn't yet been inserted. The
+ // block will end up looking like it was allocated for the first time here,
+ // which is untrue, and the slop bytes will be zero, which may be untrue.
+ // But this case is rare and doing better isn't worth the effort.
+ AllocCallback(aOldPtr, gMallocTable.malloc_usable_size(aOldPtr));
+ }
+ return ptr;
+}
+
+static void* replace_memalign(size_t aAlignment, size_t aSize) {
+ void* ptr = gMallocTable.memalign(aAlignment, aSize);
+ AllocCallback(ptr, aSize);
+ return ptr;
+}
+
+static void replace_free(void* aPtr) {
+ FreeCallback(aPtr);
+ gMallocTable.free(aPtr);
+}
+
+static void* replace_moz_arena_malloc(arena_id_t aArena, size_t aSize) {
+ void* ptr = gMallocTable.moz_arena_malloc(aArena, aSize);
+ AllocCallback(ptr, aSize);
+ return ptr;
+}
+
+static void* replace_moz_arena_calloc(arena_id_t aArena, size_t aCount,
+ size_t aSize) {
+ void* ptr = gMallocTable.moz_arena_calloc(aArena, aCount, aSize);
+ AllocCallback(ptr, aCount * aSize);
+ return ptr;
+}
+
+static void* replace_moz_arena_realloc(arena_id_t aArena, void* aPtr,
+ size_t aSize) {
+ void* ptr = gMallocTable.moz_arena_realloc(aArena, aPtr, aSize);
+ AllocCallback(ptr, aSize);
+ return ptr;
+}
+
+static void replace_moz_arena_free(arena_id_t aArena, void* aPtr) {
+ FreeCallback(aPtr);
+ gMallocTable.moz_arena_free(aArena, aPtr);
+}
+
+static void* replace_moz_arena_memalign(arena_id_t aArena, size_t aAlignment,
+ size_t aSize) {
+ void* ptr = gMallocTable.moz_arena_memalign(aArena, aAlignment, aSize);
+ AllocCallback(ptr, aSize);
+ return ptr;
+}
+
+// we have to replace these or jemalloc will assume we don't implement any
+// of the arena replacements!
+static arena_id_t replace_moz_create_arena_with_params(
+ arena_params_t* aParams) {
+ return gMallocTable.moz_create_arena_with_params(aParams);
+}
+
+static void replace_moz_dispose_arena(arena_id_t aArenaId) {
+ return gMallocTable.moz_dispose_arena(aArenaId);
+}
+
+static void replace_moz_set_max_dirty_page_modifier(int32_t aModifier) {
+ return gMallocTable.moz_set_max_dirty_page_modifier(aModifier);
+}
+
+// Must come after all the replace_* funcs
+void replace_init(malloc_table_t* aMallocTable, ReplaceMallocBridge** aBridge) {
+ gMallocTable = *aMallocTable;
+#define MALLOC_FUNCS (MALLOC_FUNCS_MALLOC_BASE | MALLOC_FUNCS_ARENA)
+#define MALLOC_DECL(name, ...) aMallocTable->name = replace_##name;
+#include "malloc_decls.h"
+}
+
+void profiler_replace_remove() {}
+
+namespace mozilla::profiler {
+//---------------------------------------------------------------------------
+// Initialization
+//---------------------------------------------------------------------------
+
+BaseProfilerCount* install_memory_hooks() {
+ if (!sCounter) {
+ sCounter = new ProfilerCounterTotal("malloc", "Memory",
+ "Amount of allocated memory");
+ // Also initialize the ThreadIntercept, even if native allocation tracking
+ // won't be turned on. This way the TLS will be initialized.
+ ThreadIntercept::Init();
+ } else {
+ sCounter->Clear();
+ }
+ jemalloc_replace_dynamic(replace_init);
+ return sCounter;
+}
+
+// Remove the hooks, but leave the sCounter machinery. Deleting the counter
+// would race with any existing memory hooks that are currently running. Rather
+// than adding overhead here of mutexes it's cheaper for the performance to just
+// leak these values.
+void remove_memory_hooks() { jemalloc_replace_dynamic(nullptr); }
+
+void enable_native_allocations() {
+ // The bloat log tracks allocations and deallocations. This can conflict
+ // with the memory hook machinery, as the bloat log creates its own
+ // allocations. This means we can re-enter inside the bloat log machinery. At
+ // this time, the bloat log does not know about cannot handle the native
+ // allocation feature.
+ //
+ // At the time of this writing, we hit this assertion:
+ // IsIdle(oldState) || IsRead(oldState) in Checker::StartReadOp()
+ //
+ // #01: GetBloatEntry(char const*, unsigned int)
+ // #02: NS_LogCtor
+ // #03: profiler_get_backtrace()
+ // #04: profiler_add_native_allocation_marker(long long)
+ // #05: mozilla::profiler::AllocCallback(void*, unsigned long)
+ // #06: replace_calloc(unsigned long, unsigned long)
+ // #07: PLDHashTable::ChangeTable(int)
+ // #08: PLDHashTable::Add(void const*, std::nothrow_t const&)
+ // #09: nsBaseHashtable<nsDepCharHashKey, nsAutoPtr<BloatEntry>, ...
+ // #10: GetBloatEntry(char const*, unsigned int)
+ // #11: NS_LogCtor
+ // #12: profiler_get_backtrace()
+ // ...
+ MOZ_ASSERT(!PR_GetEnv("XPCOM_MEM_BLOAT_LOG"),
+ "The bloat log feature is not compatible with the native "
+ "allocations instrumentation.");
+
+ EnsureBernoulliIsInstalled();
+ EnsureAllocationTrackerIsInstalled();
+ ThreadIntercept::EnableAllocationFeature();
+}
+
+// This is safe to call even if native allocations hasn't been enabled.
+void disable_native_allocations() {
+ ThreadIntercept::DisableAllocationFeature();
+ if (gAllocationTracker) {
+ gAllocationTracker->Reset();
+ }
+}
+
+} // namespace mozilla::profiler
diff --git a/tools/profiler/core/memory_hooks.h b/tools/profiler/core/memory_hooks.h
new file mode 100644
index 0000000000..a6ace771dd
--- /dev/null
+++ b/tools/profiler/core/memory_hooks.h
@@ -0,0 +1,25 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef memory_hooks_h
+#define memory_hooks_h
+
+#if defined(MOZ_REPLACE_MALLOC) && defined(MOZ_PROFILER_MEMORY)
+class BaseProfilerCount;
+
+namespace mozilla {
+namespace profiler {
+
+BaseProfilerCount* install_memory_hooks();
+void remove_memory_hooks();
+void enable_native_allocations();
+void disable_native_allocations();
+
+} // namespace profiler
+} // namespace mozilla
+#endif
+
+#endif
diff --git a/tools/profiler/core/platform-linux-android.cpp b/tools/profiler/core/platform-linux-android.cpp
new file mode 100644
index 0000000000..6bcb9cf38b
--- /dev/null
+++ b/tools/profiler/core/platform-linux-android.cpp
@@ -0,0 +1,636 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+// Copyright (c) 2006-2011 The Chromium Authors. 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.
+
+// This file is used for both Linux and Android as well as FreeBSD.
+
+#include <stdio.h>
+#include <math.h>
+
+#include <pthread.h>
+#if defined(GP_OS_freebsd)
+# include <sys/thr.h>
+#endif
+#include <semaphore.h>
+#include <signal.h>
+#include <sys/time.h>
+#include <sys/resource.h>
+#include <sys/syscall.h>
+#include <sys/types.h>
+#include <stdlib.h>
+#include <sched.h>
+#include <ucontext.h>
+// Ubuntu Dapper requires memory pages to be marked as
+// executable. Otherwise, OS raises an exception when executing code
+// in that page.
+#include <sys/types.h> // mmap & munmap
+#include <sys/mman.h> // mmap & munmap
+#include <sys/stat.h> // open
+#include <fcntl.h> // open
+#include <unistd.h> // sysconf
+#include <semaphore.h>
+#ifdef __GLIBC__
+# include <execinfo.h> // backtrace, backtrace_symbols
+#endif // def __GLIBC__
+#include <strings.h> // index
+#include <errno.h>
+#include <stdarg.h>
+
+#include "prenv.h"
+#include "mozilla/PodOperations.h"
+#include "mozilla/DebugOnly.h"
+#if defined(GP_OS_linux) || defined(GP_OS_android)
+# include "common/linux/breakpad_getcontext.h"
+#endif
+
+#include <string.h>
+#include <list>
+
+using namespace mozilla;
+
+static void PopulateRegsFromContext(Registers& aRegs, ucontext_t* aContext) {
+ aRegs.mContext = aContext;
+ mcontext_t& mcontext = aContext->uc_mcontext;
+
+ // Extracting the sample from the context is extremely machine dependent.
+#if defined(GP_PLAT_x86_linux) || defined(GP_PLAT_x86_android)
+ aRegs.mPC = reinterpret_cast<Address>(mcontext.gregs[REG_EIP]);
+ aRegs.mSP = reinterpret_cast<Address>(mcontext.gregs[REG_ESP]);
+ aRegs.mFP = reinterpret_cast<Address>(mcontext.gregs[REG_EBP]);
+ aRegs.mLR = 0;
+#elif defined(GP_PLAT_amd64_linux) || defined(GP_PLAT_amd64_android)
+ aRegs.mPC = reinterpret_cast<Address>(mcontext.gregs[REG_RIP]);
+ aRegs.mSP = reinterpret_cast<Address>(mcontext.gregs[REG_RSP]);
+ aRegs.mFP = reinterpret_cast<Address>(mcontext.gregs[REG_RBP]);
+ aRegs.mLR = 0;
+#elif defined(GP_PLAT_amd64_freebsd)
+ aRegs.mPC = reinterpret_cast<Address>(mcontext.mc_rip);
+ aRegs.mSP = reinterpret_cast<Address>(mcontext.mc_rsp);
+ aRegs.mFP = reinterpret_cast<Address>(mcontext.mc_rbp);
+ aRegs.mLR = 0;
+#elif defined(GP_PLAT_arm_linux) || defined(GP_PLAT_arm_android)
+ aRegs.mPC = reinterpret_cast<Address>(mcontext.arm_pc);
+ aRegs.mSP = reinterpret_cast<Address>(mcontext.arm_sp);
+ aRegs.mFP = reinterpret_cast<Address>(mcontext.arm_fp);
+ aRegs.mLR = reinterpret_cast<Address>(mcontext.arm_lr);
+#elif defined(GP_PLAT_arm64_linux) || defined(GP_PLAT_arm64_android)
+ aRegs.mPC = reinterpret_cast<Address>(mcontext.pc);
+ aRegs.mSP = reinterpret_cast<Address>(mcontext.sp);
+ aRegs.mFP = reinterpret_cast<Address>(mcontext.regs[29]);
+ aRegs.mLR = reinterpret_cast<Address>(mcontext.regs[30]);
+#elif defined(GP_PLAT_arm64_freebsd)
+ aRegs.mPC = reinterpret_cast<Address>(mcontext.mc_gpregs.gp_elr);
+ aRegs.mSP = reinterpret_cast<Address>(mcontext.mc_gpregs.gp_sp);
+ aRegs.mFP = reinterpret_cast<Address>(mcontext.mc_gpregs.gp_x[29]);
+ aRegs.mLR = reinterpret_cast<Address>(mcontext.mc_gpregs.gp_lr);
+#elif defined(GP_PLAT_mips64_linux) || defined(GP_PLAT_mips64_android)
+ aRegs.mPC = reinterpret_cast<Address>(mcontext.pc);
+ aRegs.mSP = reinterpret_cast<Address>(mcontext.gregs[29]);
+ aRegs.mFP = reinterpret_cast<Address>(mcontext.gregs[30]);
+
+#else
+# error "bad platform"
+#endif
+}
+
+#if defined(GP_OS_android)
+# define SYS_tgkill __NR_tgkill
+#endif
+
+#if defined(GP_OS_linux) || defined(GP_OS_android)
+int tgkill(pid_t tgid, pid_t tid, int signalno) {
+ return syscall(SYS_tgkill, tgid, tid, signalno);
+}
+#endif
+
+#if defined(GP_OS_freebsd)
+# define tgkill thr_kill2
+#endif
+
+mozilla::profiler::PlatformData::PlatformData(ProfilerThreadId aThreadId) {
+ MOZ_ASSERT(aThreadId == profiler_current_thread_id());
+ if (clockid_t clockid; pthread_getcpuclockid(pthread_self(), &clockid) == 0) {
+ mClockId = Some(clockid);
+ }
+}
+
+mozilla::profiler::PlatformData::~PlatformData() = default;
+
+////////////////////////////////////////////////////////////////////////
+// BEGIN Sampler target specifics
+
+// The only way to reliably interrupt a Linux thread and inspect its register
+// and stack state is by sending a signal to it, and doing the work inside the
+// signal handler. But we don't want to run much code inside the signal
+// handler, since POSIX severely restricts what we can do in signal handlers.
+// So we use a system of semaphores to suspend the thread and allow the
+// sampler thread to do all the work of unwinding and copying out whatever
+// data it wants.
+//
+// A four-message protocol is used to reliably suspend and later resume the
+// thread to be sampled (the samplee):
+//
+// Sampler (signal sender) thread Samplee (thread to be sampled)
+//
+// Prepare the SigHandlerCoordinator
+// and point sSigHandlerCoordinator at it
+//
+// send SIGPROF to samplee ------- MSG 1 ----> (enter signal handler)
+// wait(mMessage2) Copy register state
+// into sSigHandlerCoordinator
+// <------ MSG 2 ----- post(mMessage2)
+// Samplee is now suspended. wait(mMessage3)
+// Examine its stack/register
+// state at leisure
+//
+// Release samplee:
+// post(mMessage3) ------- MSG 3 ----->
+// wait(mMessage4) Samplee now resumes. Tell
+// the sampler that we are done.
+// <------ MSG 4 ------ post(mMessage4)
+// Now we know the samplee's signal (leave signal handler)
+// handler has finished using
+// sSigHandlerCoordinator. We can
+// safely reuse it for some other thread.
+//
+
+// A type used to coordinate between the sampler (signal sending) thread and
+// the thread currently being sampled (the samplee, which receives the
+// signals).
+//
+// The first message is sent using a SIGPROF signal delivery. The subsequent
+// three are sent using sem_wait/sem_post pairs. They are named accordingly
+// in the following struct.
+struct SigHandlerCoordinator {
+ SigHandlerCoordinator() {
+ PodZero(&mUContext);
+ int r = sem_init(&mMessage2, /* pshared */ 0, 0);
+ r |= sem_init(&mMessage3, /* pshared */ 0, 0);
+ r |= sem_init(&mMessage4, /* pshared */ 0, 0);
+ MOZ_ASSERT(r == 0);
+ (void)r;
+ }
+
+ ~SigHandlerCoordinator() {
+ int r = sem_destroy(&mMessage2);
+ r |= sem_destroy(&mMessage3);
+ r |= sem_destroy(&mMessage4);
+ MOZ_ASSERT(r == 0);
+ (void)r;
+ }
+
+ sem_t mMessage2; // To sampler: "context is in sSigHandlerCoordinator"
+ sem_t mMessage3; // To samplee: "resume"
+ sem_t mMessage4; // To sampler: "finished with sSigHandlerCoordinator"
+ ucontext_t mUContext; // Context at signal
+};
+
+struct SigHandlerCoordinator* Sampler::sSigHandlerCoordinator = nullptr;
+
+static void SigprofHandler(int aSignal, siginfo_t* aInfo, void* aContext) {
+ // Avoid TSan warning about clobbering errno.
+ int savedErrno = errno;
+
+ MOZ_ASSERT(aSignal == SIGPROF);
+ MOZ_ASSERT(Sampler::sSigHandlerCoordinator);
+
+ // By sending us this signal, the sampler thread has sent us message 1 in
+ // the comment above, with the meaning "|sSigHandlerCoordinator| is ready
+ // for use, please copy your register context into it."
+ Sampler::sSigHandlerCoordinator->mUContext =
+ *static_cast<ucontext_t*>(aContext);
+
+ // Send message 2: tell the sampler thread that the context has been copied
+ // into |sSigHandlerCoordinator->mUContext|. sem_post can never fail by
+ // being interrupted by a signal, so there's no loop around this call.
+ int r = sem_post(&Sampler::sSigHandlerCoordinator->mMessage2);
+ MOZ_ASSERT(r == 0);
+
+ // At this point, the sampler thread assumes we are suspended, so we must
+ // not touch any global state here.
+
+ // Wait for message 3: the sampler thread tells us to resume.
+ while (true) {
+ r = sem_wait(&Sampler::sSigHandlerCoordinator->mMessage3);
+ if (r == -1 && errno == EINTR) {
+ // Interrupted by a signal. Try again.
+ continue;
+ }
+ // We don't expect any other kind of failure
+ MOZ_ASSERT(r == 0);
+ break;
+ }
+
+ // Send message 4: tell the sampler thread that we are finished accessing
+ // |sSigHandlerCoordinator|. After this point it is not safe to touch
+ // |sSigHandlerCoordinator|.
+ r = sem_post(&Sampler::sSigHandlerCoordinator->mMessage4);
+ MOZ_ASSERT(r == 0);
+
+ errno = savedErrno;
+}
+
+Sampler::Sampler(PSLockRef aLock)
+ : mMyPid(profiler_current_process_id()),
+ // We don't know what the sampler thread's ID will be until it runs, so
+ // set mSamplerTid to a dummy value and fill it in for real in
+ // SuspendAndSampleAndResumeThread().
+ mSamplerTid{} {
+#if defined(USE_EHABI_STACKWALK)
+ mozilla::EHABIStackWalkInit();
+#endif
+
+ // NOTE: We don't initialize LUL here, instead initializing it in
+ // SamplerThread's constructor. This is because with the
+ // profiler_suspend_and_sample_thread entry point, we want to be able to
+ // sample without waiting for LUL to be initialized.
+
+ // Request profiling signals.
+ struct sigaction sa;
+ sa.sa_sigaction = SigprofHandler;
+ sigemptyset(&sa.sa_mask);
+ sa.sa_flags = SA_RESTART | SA_SIGINFO;
+ if (sigaction(SIGPROF, &sa, &mOldSigprofHandler) != 0) {
+ MOZ_CRASH("Error installing SIGPROF handler in the profiler");
+ }
+}
+
+void Sampler::Disable(PSLockRef aLock) {
+ // Restore old signal handler. This is global state so it's important that
+ // we do it now, while gPSMutex is locked.
+ sigaction(SIGPROF, &mOldSigprofHandler, 0);
+}
+
+static void StreamMetaPlatformSampleUnits(PSLockRef aLock,
+ SpliceableJSONWriter& aWriter) {
+ aWriter.StringProperty("threadCPUDelta", "ns");
+}
+
+/* static */
+uint64_t RunningTimes::ConvertRawToJson(uint64_t aRawValue) {
+ return aRawValue;
+}
+
+namespace mozilla::profiler {
+bool GetCpuTimeSinceThreadStartInNs(
+ uint64_t* aResult, const mozilla::profiler::PlatformData& aPlatformData) {
+ Maybe<clockid_t> maybeCid = aPlatformData.GetClockId();
+ if (MOZ_UNLIKELY(!maybeCid)) {
+ return false;
+ }
+
+ timespec t;
+ if (clock_gettime(*maybeCid, &t) != 0) {
+ return false;
+ }
+
+ *aResult = uint64_t(t.tv_sec) * 1'000'000'000u + uint64_t(t.tv_nsec);
+ return true;
+}
+} // namespace mozilla::profiler
+
+static RunningTimes GetProcessRunningTimesDiff(
+ PSLockRef aLock, RunningTimes& aPreviousRunningTimesToBeUpdated) {
+ AUTO_PROFILER_STATS(GetProcessRunningTimes);
+
+ RunningTimes newRunningTimes;
+ {
+ AUTO_PROFILER_STATS(GetProcessRunningTimes_clock_gettime);
+ if (timespec ts; clock_gettime(CLOCK_PROCESS_CPUTIME_ID, &ts) == 0) {
+ newRunningTimes.SetThreadCPUDelta(uint64_t(ts.tv_sec) * 1'000'000'000u +
+ uint64_t(ts.tv_nsec));
+ }
+ newRunningTimes.SetPostMeasurementTimeStamp(TimeStamp::Now());
+ };
+
+ const RunningTimes diff = newRunningTimes - aPreviousRunningTimesToBeUpdated;
+ aPreviousRunningTimesToBeUpdated = newRunningTimes;
+ return diff;
+}
+
+static RunningTimes GetThreadRunningTimesDiff(
+ PSLockRef aLock,
+ ThreadRegistration::UnlockedRWForLockedProfiler& aThreadData) {
+ AUTO_PROFILER_STATS(GetRunningTimes_clock_gettime_thread);
+
+ const mozilla::profiler::PlatformData& platformData =
+ aThreadData.PlatformDataCRef();
+ Maybe<clockid_t> maybeCid = platformData.GetClockId();
+
+ if (MOZ_UNLIKELY(!maybeCid)) {
+ // No clock id -> Nothing to measure apart from the timestamp.
+ RunningTimes emptyRunningTimes;
+ emptyRunningTimes.SetPostMeasurementTimeStamp(TimeStamp::Now());
+ return emptyRunningTimes;
+ }
+
+ const RunningTimes newRunningTimes = GetRunningTimesWithTightTimestamp(
+ [cid = *maybeCid](RunningTimes& aRunningTimes) {
+ AUTO_PROFILER_STATS(GetRunningTimes_clock_gettime);
+ if (timespec ts; clock_gettime(cid, &ts) == 0) {
+ aRunningTimes.ResetThreadCPUDelta(
+ uint64_t(ts.tv_sec) * 1'000'000'000u + uint64_t(ts.tv_nsec));
+ } else {
+ aRunningTimes.ClearThreadCPUDelta();
+ }
+ });
+
+ ProfiledThreadData* profiledThreadData =
+ aThreadData.GetProfiledThreadData(aLock);
+ MOZ_ASSERT(profiledThreadData);
+ RunningTimes& previousRunningTimes =
+ profiledThreadData->PreviousThreadRunningTimesRef();
+ const RunningTimes diff = newRunningTimes - previousRunningTimes;
+ previousRunningTimes = newRunningTimes;
+ return diff;
+}
+
+static void DiscardSuspendedThreadRunningTimes(
+ PSLockRef aLock,
+ ThreadRegistration::UnlockedRWForLockedProfiler& aThreadData) {
+ AUTO_PROFILER_STATS(DiscardSuspendedThreadRunningTimes);
+
+ // On Linux, suspending a thread uses a signal that makes that thread work
+ // to handle it. So we want to discard any added running time since the call
+ // to GetThreadRunningTimesDiff, which is done by overwriting the thread's
+ // PreviousThreadRunningTimesRef() with the current running time now.
+
+ const mozilla::profiler::PlatformData& platformData =
+ aThreadData.PlatformDataCRef();
+ Maybe<clockid_t> maybeCid = platformData.GetClockId();
+
+ if (MOZ_UNLIKELY(!maybeCid)) {
+ // No clock id -> Nothing to measure.
+ return;
+ }
+
+ ProfiledThreadData* profiledThreadData =
+ aThreadData.GetProfiledThreadData(aLock);
+ MOZ_ASSERT(profiledThreadData);
+ RunningTimes& previousRunningTimes =
+ profiledThreadData->PreviousThreadRunningTimesRef();
+
+ if (timespec ts; clock_gettime(*maybeCid, &ts) == 0) {
+ previousRunningTimes.ResetThreadCPUDelta(
+ uint64_t(ts.tv_sec) * 1'000'000'000u + uint64_t(ts.tv_nsec));
+ } else {
+ previousRunningTimes.ClearThreadCPUDelta();
+ }
+}
+
+template <typename Func>
+void Sampler::SuspendAndSampleAndResumeThread(
+ PSLockRef aLock,
+ const ThreadRegistration::UnlockedReaderAndAtomicRWOnThread& aThreadData,
+ const TimeStamp& aNow, const Func& aProcessRegs) {
+ // Only one sampler thread can be sampling at once. So we expect to have
+ // complete control over |sSigHandlerCoordinator|.
+ MOZ_ASSERT(!sSigHandlerCoordinator);
+
+ if (!mSamplerTid.IsSpecified()) {
+ mSamplerTid = profiler_current_thread_id();
+ }
+ ProfilerThreadId sampleeTid = aThreadData.Info().ThreadId();
+ MOZ_RELEASE_ASSERT(sampleeTid != mSamplerTid);
+
+ //----------------------------------------------------------------//
+ // Suspend the samplee thread and get its context.
+
+ SigHandlerCoordinator coord; // on sampler thread's stack
+ sSigHandlerCoordinator = &coord;
+
+ // Send message 1 to the samplee (the thread to be sampled), by
+ // signalling at it.
+ // This could fail if the thread doesn't exist anymore.
+ int r = tgkill(mMyPid.ToNumber(), sampleeTid.ToNumber(), SIGPROF);
+ if (r == 0) {
+ // Wait for message 2 from the samplee, indicating that the context
+ // is available and that the thread is suspended.
+ while (true) {
+ r = sem_wait(&sSigHandlerCoordinator->mMessage2);
+ if (r == -1 && errno == EINTR) {
+ // Interrupted by a signal. Try again.
+ continue;
+ }
+ // We don't expect any other kind of failure.
+ MOZ_ASSERT(r == 0);
+ break;
+ }
+
+ //----------------------------------------------------------------//
+ // Sample the target thread.
+
+ // WARNING WARNING WARNING WARNING WARNING WARNING WARNING WARNING
+ //
+ // The profiler's "critical section" begins here. In the critical section,
+ // we must not do any dynamic memory allocation, nor try to acquire any lock
+ // or any other unshareable resource. This is because the thread to be
+ // sampled has been suspended at some entirely arbitrary point, and we have
+ // no idea which unsharable resources (locks, essentially) it holds. So any
+ // attempt to acquire any lock, including the implied locks used by the
+ // malloc implementation, risks deadlock. This includes TimeStamp::Now(),
+ // which gets a lock on Windows.
+
+ // The samplee thread is now frozen and sSigHandlerCoordinator->mUContext is
+ // valid. We can poke around in it and unwind its stack as we like.
+
+ // Extract the current register values.
+ Registers regs;
+ PopulateRegsFromContext(regs, &sSigHandlerCoordinator->mUContext);
+ aProcessRegs(regs, aNow);
+
+ //----------------------------------------------------------------//
+ // Resume the target thread.
+
+ // Send message 3 to the samplee, which tells it to resume.
+ r = sem_post(&sSigHandlerCoordinator->mMessage3);
+ MOZ_ASSERT(r == 0);
+
+ // Wait for message 4 from the samplee, which tells us that it has
+ // finished with |sSigHandlerCoordinator|.
+ while (true) {
+ r = sem_wait(&sSigHandlerCoordinator->mMessage4);
+ if (r == -1 && errno == EINTR) {
+ continue;
+ }
+ MOZ_ASSERT(r == 0);
+ break;
+ }
+
+ // The profiler's critical section ends here. After this point, none of the
+ // critical section limitations documented above apply.
+ //
+ // WARNING WARNING WARNING WARNING WARNING WARNING WARNING WARNING
+ }
+
+ // This isn't strictly necessary, but doing so does help pick up anomalies
+ // in which the signal handler is running when it shouldn't be.
+ sSigHandlerCoordinator = nullptr;
+}
+
+// END Sampler target specifics
+////////////////////////////////////////////////////////////////////////
+
+////////////////////////////////////////////////////////////////////////
+// BEGIN SamplerThread target specifics
+
+static void* ThreadEntry(void* aArg) {
+ auto thread = static_cast<SamplerThread*>(aArg);
+ thread->Run();
+ return nullptr;
+}
+
+SamplerThread::SamplerThread(PSLockRef aLock, uint32_t aActivityGeneration,
+ double aIntervalMilliseconds, uint32_t aFeatures)
+ : mSampler(aLock),
+ mActivityGeneration(aActivityGeneration),
+ mIntervalMicroseconds(
+ std::max(1, int(floor(aIntervalMilliseconds * 1000 + 0.5)))) {
+#if defined(USE_LUL_STACKWALK)
+ lul::LUL* lul = CorePS::Lul();
+ if (!lul && ProfilerFeature::HasStackWalk(aFeatures)) {
+ CorePS::SetLul(MakeUnique<lul::LUL>(logging_sink_for_LUL));
+ // Read all the unwind info currently available.
+ lul = CorePS::Lul();
+ read_procmaps(lul);
+
+ // Switch into unwind mode. After this point, we can't add or remove any
+ // unwind info to/from this LUL instance. The only thing we can do with
+ // it is Unwind() calls.
+ lul->EnableUnwinding();
+
+ // Has a test been requested?
+ if (PR_GetEnv("MOZ_PROFILER_LUL_TEST")) {
+ int nTests = 0, nTestsPassed = 0;
+ RunLulUnitTests(&nTests, &nTestsPassed, lul);
+ }
+ }
+#endif
+
+ // Start the sampling thread. It repeatedly sends a SIGPROF signal. Sending
+ // the signal ourselves instead of relying on itimer provides much better
+ // accuracy.
+ //
+ // At least 350 KiB of stack space are needed when built with TSAN. This
+ // includes lul::N_STACK_BYTES plus whatever else is needed for the sampler
+ // thread. Set the stack size to 800 KiB to keep a safe margin above that.
+ pthread_attr_t attr;
+ if (pthread_attr_init(&attr) != 0 ||
+ pthread_attr_setstacksize(&attr, 800 * 1024) != 0 ||
+ pthread_create(&mThread, &attr, ThreadEntry, this) != 0) {
+ MOZ_CRASH("pthread_create failed");
+ }
+ pthread_attr_destroy(&attr);
+}
+
+SamplerThread::~SamplerThread() {
+ pthread_join(mThread, nullptr);
+ // Just in the unlikely case some callbacks were added between the end of the
+ // thread and now.
+ InvokePostSamplingCallbacks(std::move(mPostSamplingCallbackList),
+ SamplingState::JustStopped);
+}
+
+void SamplerThread::SleepMicro(uint32_t aMicroseconds) {
+ if (aMicroseconds >= 1000000) {
+ // Use usleep for larger intervals, because the nanosleep
+ // code below only supports intervals < 1 second.
+ MOZ_ALWAYS_TRUE(!::usleep(aMicroseconds));
+ return;
+ }
+
+ struct timespec ts;
+ ts.tv_sec = 0;
+ ts.tv_nsec = aMicroseconds * 1000UL;
+
+ int rv = ::nanosleep(&ts, &ts);
+
+ while (rv != 0 && errno == EINTR) {
+ // Keep waiting in case of interrupt.
+ // nanosleep puts the remaining time back into ts.
+ rv = ::nanosleep(&ts, &ts);
+ }
+
+ MOZ_ASSERT(!rv, "nanosleep call failed");
+}
+
+void SamplerThread::Stop(PSLockRef aLock) {
+ // Restore old signal handler. This is global state so it's important that
+ // we do it now, while gPSMutex is locked. It's safe to do this now even
+ // though this SamplerThread is still alive, because the next time the main
+ // loop of Run() iterates it won't get past the mActivityGeneration check,
+ // and so won't send any signals.
+ mSampler.Disable(aLock);
+}
+
+// END SamplerThread target specifics
+////////////////////////////////////////////////////////////////////////
+
+#if defined(GP_OS_linux) || defined(GP_OS_freebsd)
+
+// We use pthread_atfork() to temporarily disable signal delivery during any
+// fork() call. Without that, fork() can be repeatedly interrupted by signal
+// delivery, requiring it to be repeatedly restarted, which can lead to *long*
+// delays. See bug 837390.
+//
+// We provide no paf_child() function to run in the child after forking. This
+// is fine because we always immediately exec() after fork(), and exec()
+// clobbers all process state. Also, we don't want the sampler to resume in the
+// child process between fork() and exec(), it would be wasteful.
+//
+// Unfortunately all this is only doable on non-Android because Bionic doesn't
+// have pthread_atfork.
+
+// In the parent, before the fork, increase gSkipSampling to ensure that
+// profiler sampling loops will be skipped. There could be one in progress now,
+// causing a small delay, but further sampling will be skipped, allowing `fork`
+// to complete.
+static void paf_prepare() { ++gSkipSampling; }
+
+// In the parent, after the fork, decrease gSkipSampling to let the sampler
+// resume sampling (unless other places have made it non-zero as well).
+static void paf_parent() { --gSkipSampling; }
+
+static void PlatformInit(PSLockRef aLock) {
+ // Set up the fork handlers.
+ pthread_atfork(paf_prepare, paf_parent, nullptr);
+}
+
+#else
+
+static void PlatformInit(PSLockRef aLock) {}
+
+#endif
+
+#if defined(HAVE_NATIVE_UNWIND)
+# define REGISTERS_SYNC_POPULATE(regs) \
+ if (!getcontext(&regs.mContextSyncStorage)) { \
+ PopulateRegsFromContext(regs, &regs.mContextSyncStorage); \
+ }
+#endif
diff --git a/tools/profiler/core/platform-macos.cpp b/tools/profiler/core/platform-macos.cpp
new file mode 100644
index 0000000000..b69a346d64
--- /dev/null
+++ b/tools/profiler/core/platform-macos.cpp
@@ -0,0 +1,297 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include <unistd.h>
+#include <sys/mman.h>
+#include <mach/mach_init.h>
+#include <mach-o/getsect.h>
+
+#include <AvailabilityMacros.h>
+
+#include <pthread.h>
+#include <semaphore.h>
+#include <signal.h>
+#include <libkern/OSAtomic.h>
+#include <libproc.h>
+#include <mach/mach.h>
+#include <mach/semaphore.h>
+#include <mach/task.h>
+#include <mach/thread_act.h>
+#include <mach/vm_statistics.h>
+#include <sys/time.h>
+#include <sys/resource.h>
+#include <sys/syscall.h>
+#include <sys/types.h>
+#include <sys/sysctl.h>
+#include <stdarg.h>
+#include <stdlib.h>
+#include <string.h>
+#include <errno.h>
+#include <math.h>
+
+// this port is based off of v8 svn revision 9837
+
+mozilla::profiler::PlatformData::PlatformData(ProfilerThreadId aThreadId)
+ : mProfiledThread(mach_thread_self()) {}
+
+mozilla::profiler::PlatformData::~PlatformData() {
+ // Deallocate Mach port for thread.
+ mach_port_deallocate(mach_task_self(), mProfiledThread);
+}
+
+////////////////////////////////////////////////////////////////////////
+// BEGIN Sampler target specifics
+
+Sampler::Sampler(PSLockRef aLock) {}
+
+void Sampler::Disable(PSLockRef aLock) {}
+
+static void StreamMetaPlatformSampleUnits(PSLockRef aLock,
+ SpliceableJSONWriter& aWriter) {
+ // Microseconds.
+ aWriter.StringProperty("threadCPUDelta", "\u00B5s");
+}
+
+/* static */
+uint64_t RunningTimes::ConvertRawToJson(uint64_t aRawValue) {
+ return aRawValue;
+}
+
+namespace mozilla::profiler {
+bool GetCpuTimeSinceThreadStartInNs(
+ uint64_t* aResult, const mozilla::profiler::PlatformData& aPlatformData) {
+ thread_extended_info_data_t threadInfoData;
+ mach_msg_type_number_t count = THREAD_EXTENDED_INFO_COUNT;
+ if (thread_info(aPlatformData.ProfiledThread(), THREAD_EXTENDED_INFO,
+ (thread_info_t)&threadInfoData, &count) != KERN_SUCCESS) {
+ return false;
+ }
+
+ *aResult = threadInfoData.pth_user_time + threadInfoData.pth_system_time;
+ return true;
+}
+} // namespace mozilla::profiler
+
+static RunningTimes GetProcessRunningTimesDiff(
+ PSLockRef aLock, RunningTimes& aPreviousRunningTimesToBeUpdated) {
+ AUTO_PROFILER_STATS(GetProcessRunningTimes);
+
+ RunningTimes newRunningTimes;
+ {
+ AUTO_PROFILER_STATS(GetProcessRunningTimes_task_info);
+
+ static const auto pid = getpid();
+ struct proc_taskinfo pti;
+ if ((unsigned long)proc_pidinfo(pid, PROC_PIDTASKINFO, 0, &pti,
+ PROC_PIDTASKINFO_SIZE) >=
+ PROC_PIDTASKINFO_SIZE) {
+ newRunningTimes.SetThreadCPUDelta(pti.pti_total_user +
+ pti.pti_total_system);
+ }
+ newRunningTimes.SetPostMeasurementTimeStamp(TimeStamp::Now());
+ };
+
+ const RunningTimes diff = newRunningTimes - aPreviousRunningTimesToBeUpdated;
+ aPreviousRunningTimesToBeUpdated = newRunningTimes;
+ return diff;
+}
+
+static RunningTimes GetThreadRunningTimesDiff(
+ PSLockRef aLock,
+ ThreadRegistration::UnlockedRWForLockedProfiler& aThreadData) {
+ AUTO_PROFILER_STATS(GetRunningTimes);
+
+ const mozilla::profiler::PlatformData& platformData =
+ aThreadData.PlatformDataCRef();
+
+ const RunningTimes newRunningTimes = GetRunningTimesWithTightTimestamp(
+ [&platformData](RunningTimes& aRunningTimes) {
+ AUTO_PROFILER_STATS(GetRunningTimes_thread_info);
+ thread_basic_info_data_t threadBasicInfo;
+ mach_msg_type_number_t basicCount = THREAD_BASIC_INFO_COUNT;
+ if (thread_info(platformData.ProfiledThread(), THREAD_BASIC_INFO,
+ reinterpret_cast<thread_info_t>(&threadBasicInfo),
+ &basicCount) == KERN_SUCCESS &&
+ basicCount == THREAD_BASIC_INFO_COUNT) {
+ uint64_t userTimeUs =
+ uint64_t(threadBasicInfo.user_time.seconds) *
+ uint64_t(USEC_PER_SEC) +
+ uint64_t(threadBasicInfo.user_time.microseconds);
+ uint64_t systemTimeUs =
+ uint64_t(threadBasicInfo.system_time.seconds) *
+ uint64_t(USEC_PER_SEC) +
+ uint64_t(threadBasicInfo.system_time.microseconds);
+ aRunningTimes.ResetThreadCPUDelta(userTimeUs + systemTimeUs);
+ } else {
+ aRunningTimes.ClearThreadCPUDelta();
+ }
+ });
+
+ ProfiledThreadData* profiledThreadData =
+ aThreadData.GetProfiledThreadData(aLock);
+ MOZ_ASSERT(profiledThreadData);
+ RunningTimes& previousRunningTimes =
+ profiledThreadData->PreviousThreadRunningTimesRef();
+ const RunningTimes diff = newRunningTimes - previousRunningTimes;
+ previousRunningTimes = newRunningTimes;
+ return diff;
+}
+
+static void DiscardSuspendedThreadRunningTimes(
+ PSLockRef aLock,
+ ThreadRegistration::UnlockedRWForLockedProfiler& aThreadData) {
+ // Nothing to do!
+ // On macOS, suspending a thread doesn't make that thread work.
+}
+
+template <typename Func>
+void Sampler::SuspendAndSampleAndResumeThread(
+ PSLockRef aLock,
+ const ThreadRegistration::UnlockedReaderAndAtomicRWOnThread& aThreadData,
+ const TimeStamp& aNow, const Func& aProcessRegs) {
+ thread_act_t samplee_thread = aThreadData.PlatformDataCRef().ProfiledThread();
+
+ //----------------------------------------------------------------//
+ // Suspend the samplee thread and get its context.
+
+ // We're using thread_suspend on OS X because pthread_kill (which is what we
+ // at one time used on Linux) has less consistent performance and causes
+ // strange crashes, see bug 1166778 and bug 1166808. thread_suspend
+ // is also just a lot simpler to use.
+
+ if (KERN_SUCCESS != thread_suspend(samplee_thread)) {
+ return;
+ }
+
+ //----------------------------------------------------------------//
+ // Sample the target thread.
+
+ // WARNING WARNING WARNING WARNING WARNING WARNING WARNING WARNING
+ //
+ // The profiler's "critical section" begins here. We must be very careful
+ // what we do here, or risk deadlock. See the corresponding comment in
+ // platform-linux-android.cpp for details.
+
+#if defined(__x86_64__)
+ thread_state_flavor_t flavor = x86_THREAD_STATE64;
+ x86_thread_state64_t state;
+ mach_msg_type_number_t count = x86_THREAD_STATE64_COUNT;
+# if __DARWIN_UNIX03
+# define REGISTER_FIELD(name) __r##name
+# else
+# define REGISTER_FIELD(name) r##name
+# endif // __DARWIN_UNIX03
+#elif defined(__aarch64__)
+ thread_state_flavor_t flavor = ARM_THREAD_STATE64;
+ arm_thread_state64_t state;
+ mach_msg_type_number_t count = ARM_THREAD_STATE64_COUNT;
+# if __DARWIN_UNIX03
+# define REGISTER_FIELD(name) __##name
+# else
+# define REGISTER_FIELD(name) name
+# endif // __DARWIN_UNIX03
+#else
+# error "unknown architecture"
+#endif
+
+ if (thread_get_state(samplee_thread, flavor,
+ reinterpret_cast<natural_t*>(&state),
+ &count) == KERN_SUCCESS) {
+ Registers regs;
+#if defined(__x86_64__)
+ regs.mPC = reinterpret_cast<Address>(state.REGISTER_FIELD(ip));
+ regs.mSP = reinterpret_cast<Address>(state.REGISTER_FIELD(sp));
+ regs.mFP = reinterpret_cast<Address>(state.REGISTER_FIELD(bp));
+ regs.mLR = 0;
+#elif defined(__aarch64__)
+ regs.mPC = reinterpret_cast<Address>(state.REGISTER_FIELD(pc));
+ regs.mSP = reinterpret_cast<Address>(state.REGISTER_FIELD(sp));
+ regs.mFP = reinterpret_cast<Address>(state.REGISTER_FIELD(fp));
+ regs.mLR = reinterpret_cast<Address>(state.REGISTER_FIELD(lr));
+#else
+# error "unknown architecture"
+#endif
+
+ aProcessRegs(regs, aNow);
+ }
+
+#undef REGISTER_FIELD
+
+ //----------------------------------------------------------------//
+ // Resume the target thread.
+
+ thread_resume(samplee_thread);
+
+ // The profiler's critical section ends here.
+ //
+ // WARNING WARNING WARNING WARNING WARNING WARNING WARNING WARNING
+}
+
+// END Sampler target specifics
+////////////////////////////////////////////////////////////////////////
+
+////////////////////////////////////////////////////////////////////////
+// BEGIN SamplerThread target specifics
+
+static void* ThreadEntry(void* aArg) {
+ auto thread = static_cast<SamplerThread*>(aArg);
+ thread->Run();
+ return nullptr;
+}
+
+SamplerThread::SamplerThread(PSLockRef aLock, uint32_t aActivityGeneration,
+ double aIntervalMilliseconds, uint32_t aFeatures)
+ : mSampler(aLock),
+ mActivityGeneration(aActivityGeneration),
+ mIntervalMicroseconds(
+ std::max(1, int(floor(aIntervalMilliseconds * 1000 + 0.5)))),
+ mThread{nullptr} {
+ pthread_attr_t* attr_ptr = nullptr;
+ if (pthread_create(&mThread, attr_ptr, ThreadEntry, this) != 0) {
+ MOZ_CRASH("pthread_create failed");
+ }
+}
+
+SamplerThread::~SamplerThread() {
+ pthread_join(mThread, nullptr);
+ // Just in the unlikely case some callbacks were added between the end of the
+ // thread and now.
+ InvokePostSamplingCallbacks(std::move(mPostSamplingCallbackList),
+ SamplingState::JustStopped);
+}
+
+void SamplerThread::SleepMicro(uint32_t aMicroseconds) {
+ usleep(aMicroseconds);
+ // FIXME: the OSX 10.12 page for usleep says "The usleep() function is
+ // obsolescent. Use nanosleep(2) instead." This implementation could be
+ // merged with the linux-android version. Also, this doesn't handle the
+ // case where the usleep call is interrupted by a signal.
+}
+
+void SamplerThread::Stop(PSLockRef aLock) { mSampler.Disable(aLock); }
+
+// END SamplerThread target specifics
+////////////////////////////////////////////////////////////////////////
+
+static void PlatformInit(PSLockRef aLock) {}
+
+// clang-format off
+#if defined(HAVE_NATIVE_UNWIND)
+// Derive the stack pointer from the frame pointer. The 0x10 offset is
+// 8 bytes for the previous frame pointer and 8 bytes for the return
+// address both stored on the stack after at the beginning of the current
+// frame.
+# define REGISTERS_SYNC_POPULATE(regs) \
+ regs.mSP = reinterpret_cast<Address>(__builtin_frame_address(0)) + 0x10; \
+ _Pragma("GCC diagnostic push") \
+ _Pragma("GCC diagnostic ignored \"-Wframe-address\"") \
+ regs.mFP = reinterpret_cast<Address>(__builtin_frame_address(1)); \
+ _Pragma("GCC diagnostic pop") \
+ regs.mPC = reinterpret_cast<Address>( \
+ __builtin_extract_return_addr(__builtin_return_address(0))); \
+ regs.mLR = 0;
+#endif
+// clang-format on
diff --git a/tools/profiler/core/platform-win32.cpp b/tools/profiler/core/platform-win32.cpp
new file mode 100644
index 0000000000..5e10e04c89
--- /dev/null
+++ b/tools/profiler/core/platform-win32.cpp
@@ -0,0 +1,496 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+// Copyright (c) 2006-2011 The Chromium Authors. 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.
+
+#include <windows.h>
+#include <mmsystem.h>
+#include <process.h>
+
+#include "nsWindowsDllInterceptor.h"
+#include "mozilla/StackWalk_windows.h"
+#include "mozilla/WindowsVersion.h"
+
+#include <type_traits>
+
+static void PopulateRegsFromContext(Registers& aRegs, CONTEXT* aContext) {
+#if defined(GP_ARCH_amd64)
+ aRegs.mPC = reinterpret_cast<Address>(aContext->Rip);
+ aRegs.mSP = reinterpret_cast<Address>(aContext->Rsp);
+ aRegs.mFP = reinterpret_cast<Address>(aContext->Rbp);
+ aRegs.mLR = 0;
+#elif defined(GP_ARCH_x86)
+ aRegs.mPC = reinterpret_cast<Address>(aContext->Eip);
+ aRegs.mSP = reinterpret_cast<Address>(aContext->Esp);
+ aRegs.mFP = reinterpret_cast<Address>(aContext->Ebp);
+ aRegs.mLR = 0;
+#elif defined(GP_ARCH_arm64)
+ aRegs.mPC = reinterpret_cast<Address>(aContext->Pc);
+ aRegs.mSP = reinterpret_cast<Address>(aContext->Sp);
+ aRegs.mFP = reinterpret_cast<Address>(aContext->Fp);
+ aRegs.mLR = reinterpret_cast<Address>(aContext->Lr);
+#else
+# error "bad arch"
+#endif
+}
+
+// Gets a real (i.e. not pseudo) handle for the current thread, with the
+// permissions needed for profiling.
+// @return a real HANDLE for the current thread.
+static HANDLE GetRealCurrentThreadHandleForProfiling() {
+ HANDLE realCurrentThreadHandle;
+ if (!::DuplicateHandle(
+ ::GetCurrentProcess(), ::GetCurrentThread(), ::GetCurrentProcess(),
+ &realCurrentThreadHandle,
+ THREAD_GET_CONTEXT | THREAD_SUSPEND_RESUME | THREAD_QUERY_INFORMATION,
+ FALSE, 0)) {
+ return nullptr;
+ }
+
+ return realCurrentThreadHandle;
+}
+
+static_assert(
+ std::is_same_v<mozilla::profiler::PlatformData::WindowsHandle, HANDLE>);
+
+mozilla::profiler::PlatformData::PlatformData(ProfilerThreadId aThreadId)
+ : mProfiledThread(GetRealCurrentThreadHandleForProfiling()) {
+ MOZ_ASSERT(aThreadId == ProfilerThreadId::FromNumber(::GetCurrentThreadId()));
+}
+
+mozilla::profiler::PlatformData::~PlatformData() {
+ if (mProfiledThread) {
+ CloseHandle(mProfiledThread);
+ mProfiledThread = nullptr;
+ }
+}
+
+static const HANDLE kNoThread = INVALID_HANDLE_VALUE;
+
+////////////////////////////////////////////////////////////////////////
+// BEGIN Sampler target specifics
+
+Sampler::Sampler(PSLockRef aLock) {}
+
+void Sampler::Disable(PSLockRef aLock) {}
+
+static void StreamMetaPlatformSampleUnits(PSLockRef aLock,
+ SpliceableJSONWriter& aWriter) {
+ static const Span<const char> units =
+ (GetCycleTimeFrequencyMHz() != 0) ? MakeStringSpan("ns")
+ : MakeStringSpan("variable CPU cycles");
+ aWriter.StringProperty("threadCPUDelta", units);
+}
+
+/* static */
+uint64_t RunningTimes::ConvertRawToJson(uint64_t aRawValue) {
+ static const uint64_t cycleTimeFrequencyMHz = GetCycleTimeFrequencyMHz();
+ if (cycleTimeFrequencyMHz == 0u) {
+ return aRawValue;
+ }
+
+ constexpr uint64_t GHZ_PER_MHZ = 1'000u;
+ // To get ns, we need to divide cycles by a frequency in GHz, i.e.:
+ // cycles / (f_MHz / GHZ_PER_MHZ). To avoid losing the integer precision of
+ // f_MHz, this is computed as (cycles * GHZ_PER_MHZ) / f_MHz.
+ // Adding GHZ_PER_MHZ/2 to (cycles * GHZ_PER_MHZ) will round to nearest when
+ // the result of the division is truncated.
+ return (aRawValue * GHZ_PER_MHZ + (GHZ_PER_MHZ / 2u)) / cycleTimeFrequencyMHz;
+}
+
+static inline uint64_t ToNanoSeconds(const FILETIME& aFileTime) {
+ // FILETIME values are 100-nanoseconds units, converting
+ ULARGE_INTEGER usec = {{aFileTime.dwLowDateTime, aFileTime.dwHighDateTime}};
+ return usec.QuadPart * 100;
+}
+
+namespace mozilla::profiler {
+bool GetCpuTimeSinceThreadStartInNs(
+ uint64_t* aResult, const mozilla::profiler::PlatformData& aPlatformData) {
+ const HANDLE profiledThread = aPlatformData.ProfiledThread();
+ int frequencyInMHz = GetCycleTimeFrequencyMHz();
+ if (frequencyInMHz) {
+ uint64_t cpuCycleCount;
+ if (!QueryThreadCycleTime(profiledThread, &cpuCycleCount)) {
+ return false;
+ }
+
+ constexpr uint64_t USEC_PER_NSEC = 1000L;
+ *aResult = cpuCycleCount * USEC_PER_NSEC / frequencyInMHz;
+ return true;
+ }
+
+ FILETIME createTime, exitTime, kernelTime, userTime;
+ if (!GetThreadTimes(profiledThread, &createTime, &exitTime, &kernelTime,
+ &userTime)) {
+ return false;
+ }
+
+ *aResult = ToNanoSeconds(kernelTime) + ToNanoSeconds(userTime);
+ return true;
+}
+} // namespace mozilla::profiler
+
+static RunningTimes GetProcessRunningTimesDiff(
+ PSLockRef aLock, RunningTimes& aPreviousRunningTimesToBeUpdated) {
+ AUTO_PROFILER_STATS(GetProcessRunningTimes);
+
+ static const HANDLE processHandle = GetCurrentProcess();
+
+ RunningTimes newRunningTimes;
+ {
+ AUTO_PROFILER_STATS(GetProcessRunningTimes_QueryProcessCycleTime);
+ if (ULONG64 cycles; QueryProcessCycleTime(processHandle, &cycles) != 0) {
+ newRunningTimes.SetThreadCPUDelta(cycles);
+ }
+ newRunningTimes.SetPostMeasurementTimeStamp(TimeStamp::Now());
+ };
+
+ const RunningTimes diff = newRunningTimes - aPreviousRunningTimesToBeUpdated;
+ aPreviousRunningTimesToBeUpdated = newRunningTimes;
+ return diff;
+}
+
+static RunningTimes GetThreadRunningTimesDiff(
+ PSLockRef aLock,
+ ThreadRegistration::UnlockedRWForLockedProfiler& aThreadData) {
+ AUTO_PROFILER_STATS(GetThreadRunningTimes);
+
+ const mozilla::profiler::PlatformData& platformData =
+ aThreadData.PlatformDataCRef();
+ const HANDLE profiledThread = platformData.ProfiledThread();
+
+ const RunningTimes newRunningTimes = GetRunningTimesWithTightTimestamp(
+ [profiledThread](RunningTimes& aRunningTimes) {
+ AUTO_PROFILER_STATS(GetThreadRunningTimes_QueryThreadCycleTime);
+ if (ULONG64 cycles;
+ QueryThreadCycleTime(profiledThread, &cycles) != 0) {
+ aRunningTimes.ResetThreadCPUDelta(cycles);
+ } else {
+ aRunningTimes.ClearThreadCPUDelta();
+ }
+ });
+
+ ProfiledThreadData* profiledThreadData =
+ aThreadData.GetProfiledThreadData(aLock);
+ MOZ_ASSERT(profiledThreadData);
+ RunningTimes& previousRunningTimes =
+ profiledThreadData->PreviousThreadRunningTimesRef();
+ const RunningTimes diff = newRunningTimes - previousRunningTimes;
+ previousRunningTimes = newRunningTimes;
+ return diff;
+}
+
+static void DiscardSuspendedThreadRunningTimes(
+ PSLockRef aLock,
+ ThreadRegistration::UnlockedRWForLockedProfiler& aThreadData) {
+ AUTO_PROFILER_STATS(DiscardSuspendedThreadRunningTimes);
+
+ // On Windows, suspending a thread makes that thread work a little bit. So we
+ // want to discard any added running time since the call to
+ // GetThreadRunningTimesDiff, which is done by overwriting the thread's
+ // PreviousThreadRunningTimesRef() with the current running time now.
+
+ const mozilla::profiler::PlatformData& platformData =
+ aThreadData.PlatformDataCRef();
+ const HANDLE profiledThread = platformData.ProfiledThread();
+
+ ProfiledThreadData* profiledThreadData =
+ aThreadData.GetProfiledThreadData(aLock);
+ MOZ_ASSERT(profiledThreadData);
+ RunningTimes& previousRunningTimes =
+ profiledThreadData->PreviousThreadRunningTimesRef();
+
+ if (ULONG64 cycles; QueryThreadCycleTime(profiledThread, &cycles) != 0) {
+ previousRunningTimes.ResetThreadCPUDelta(cycles);
+ } else {
+ previousRunningTimes.ClearThreadCPUDelta();
+ }
+}
+
+template <typename Func>
+void Sampler::SuspendAndSampleAndResumeThread(
+ PSLockRef aLock,
+ const ThreadRegistration::UnlockedReaderAndAtomicRWOnThread& aThreadData,
+ const TimeStamp& aNow, const Func& aProcessRegs) {
+ HANDLE profiled_thread = aThreadData.PlatformDataCRef().ProfiledThread();
+ if (profiled_thread == nullptr) {
+ return;
+ }
+
+ // Context used for sampling the register state of the profiled thread.
+ CONTEXT context;
+ memset(&context, 0, sizeof(context));
+
+ //----------------------------------------------------------------//
+ // Suspend the samplee thread and get its context.
+
+ static const DWORD kSuspendFailed = static_cast<DWORD>(-1);
+ if (SuspendThread(profiled_thread) == kSuspendFailed) {
+ return;
+ }
+
+ // SuspendThread is asynchronous, so the thread may still be running.
+ // Call GetThreadContext first to ensure the thread is really suspended.
+ // See https://blogs.msdn.microsoft.com/oldnewthing/20150205-00/?p=44743.
+
+ // Using only CONTEXT_CONTROL is faster but on 64-bit it causes crashes in
+ // RtlVirtualUnwind (see bug 1120126) so we set all the flags.
+#if defined(GP_ARCH_amd64)
+ context.ContextFlags = CONTEXT_FULL;
+#else
+ context.ContextFlags = CONTEXT_CONTROL;
+#endif
+ if (!GetThreadContext(profiled_thread, &context)) {
+ ResumeThread(profiled_thread);
+ return;
+ }
+
+ //----------------------------------------------------------------//
+ // Sample the target thread.
+
+ // WARNING WARNING WARNING WARNING WARNING WARNING WARNING WARNING
+ //
+ // The profiler's "critical section" begins here. We must be very careful
+ // what we do here, or risk deadlock. See the corresponding comment in
+ // platform-linux-android.cpp for details.
+
+ Registers regs;
+ PopulateRegsFromContext(regs, &context);
+ aProcessRegs(regs, aNow);
+
+ //----------------------------------------------------------------//
+ // Resume the target thread.
+
+ ResumeThread(profiled_thread);
+
+ // The profiler's critical section ends here.
+ //
+ // WARNING WARNING WARNING WARNING WARNING WARNING WARNING WARNING
+}
+
+// END Sampler target specifics
+////////////////////////////////////////////////////////////////////////
+
+////////////////////////////////////////////////////////////////////////
+// BEGIN SamplerThread target specifics
+
+static unsigned int __stdcall ThreadEntry(void* aArg) {
+ auto thread = static_cast<SamplerThread*>(aArg);
+ thread->Run();
+ return 0;
+}
+
+static unsigned int __stdcall UnregisteredThreadSpyEntry(void* aArg) {
+ auto thread = static_cast<SamplerThread*>(aArg);
+ thread->RunUnregisteredThreadSpy();
+ return 0;
+}
+
+SamplerThread::SamplerThread(PSLockRef aLock, uint32_t aActivityGeneration,
+ double aIntervalMilliseconds, uint32_t aFeatures)
+ : mSampler(aLock),
+ mActivityGeneration(aActivityGeneration),
+ mIntervalMicroseconds(
+ std::max(1, int(floor(aIntervalMilliseconds * 1000 + 0.5)))),
+ mNoTimerResolutionChange(
+ ProfilerFeature::HasNoTimerResolutionChange(aFeatures)) {
+ if ((!mNoTimerResolutionChange) && (mIntervalMicroseconds < 10 * 1000)) {
+ // By default the timer resolution (which tends to be 1/64Hz, around 16ms)
+ // is not changed. However, if the requested interval is sufficiently low,
+ // the resolution will be adjusted to match. Note that this affects all
+ // timers in Firefox, and could therefore hide issues while profiling. This
+ // change may be prevented with the "notimerresolutionchange" feature.
+ ::timeBeginPeriod(mIntervalMicroseconds / 1000);
+ }
+
+ if (ProfilerFeature::HasUnregisteredThreads(aFeatures)) {
+ // Sampler&spy threads are not running yet, so it's safe to modify
+ // mSpyingState without locking the monitor.
+ mSpyingState = SpyingState::Spy_Initializing;
+ mUnregisteredThreadSpyThread = reinterpret_cast<HANDLE>(
+ _beginthreadex(nullptr,
+ /* stack_size */ 0, UnregisteredThreadSpyEntry, this,
+ /* initflag */ 0, nullptr));
+ if (mUnregisteredThreadSpyThread == 0) {
+ MOZ_CRASH("_beginthreadex failed");
+ }
+ }
+
+ // Create a new thread. It is important to use _beginthreadex() instead of
+ // the Win32 function CreateThread(), because the CreateThread() does not
+ // initialize thread-specific structures in the C runtime library.
+ mThread = reinterpret_cast<HANDLE>(_beginthreadex(nullptr,
+ /* stack_size */ 0,
+ ThreadEntry, this,
+ /* initflag */ 0, nullptr));
+ if (mThread == 0) {
+ MOZ_CRASH("_beginthreadex failed");
+ }
+}
+
+SamplerThread::~SamplerThread() {
+ if (mUnregisteredThreadSpyThread) {
+ {
+ // Make sure the spying thread is not actively working, because the win32
+ // function it's using could deadlock with WaitForSingleObject below.
+ MonitorAutoLock spyingStateLock{mSpyingStateMonitor};
+ while (mSpyingState != SpyingState::Spy_Waiting &&
+ mSpyingState != SpyingState::SamplerToSpy_Start) {
+ spyingStateLock.Wait();
+ }
+
+ mSpyingState = SpyingState::MainToSpy_Shutdown;
+ spyingStateLock.NotifyAll();
+
+ do {
+ spyingStateLock.Wait();
+ } while (mSpyingState != SpyingState::SpyToMain_ShuttingDown);
+ }
+
+ WaitForSingleObject(mUnregisteredThreadSpyThread, INFINITE);
+
+ // Close our own handle for the thread.
+ if (mUnregisteredThreadSpyThread != kNoThread) {
+ CloseHandle(mUnregisteredThreadSpyThread);
+ }
+ }
+
+ WaitForSingleObject(mThread, INFINITE);
+
+ // Close our own handle for the thread.
+ if (mThread != kNoThread) {
+ CloseHandle(mThread);
+ }
+
+ // Just in the unlikely case some callbacks were added between the end of the
+ // thread and now.
+ InvokePostSamplingCallbacks(std::move(mPostSamplingCallbackList),
+ SamplingState::JustStopped);
+}
+
+void SamplerThread::RunUnregisteredThreadSpy() {
+ // TODO: Consider registering this thread.
+ // Pros: Remove from list of unregistered threads; Not useful to profiling
+ // Firefox itself.
+ // Cons: Doesn't appear in the profile, so users may miss the expensive CPU
+ // cost of this work on Windows.
+ PR_SetCurrentThreadName("UnregisteredThreadSpy");
+
+ while (true) {
+ {
+ MonitorAutoLock spyingStateLock{mSpyingStateMonitor};
+ // Either this is the first loop, or we're looping after working.
+ MOZ_ASSERT(mSpyingState == SpyingState::Spy_Initializing ||
+ mSpyingState == SpyingState::Spy_Working);
+
+ // Let everyone know we're waiting, and then wait.
+ mSpyingState = SpyingState::Spy_Waiting;
+ mSpyingStateMonitor.NotifyAll();
+ do {
+ spyingStateLock.Wait();
+ } while (mSpyingState == SpyingState::Spy_Waiting);
+
+ if (mSpyingState == SpyingState::MainToSpy_Shutdown) {
+ mSpyingState = SpyingState::SpyToMain_ShuttingDown;
+ mSpyingStateMonitor.NotifyAll();
+ break;
+ }
+
+ MOZ_ASSERT(mSpyingState == SpyingState::SamplerToSpy_Start);
+ mSpyingState = SpyingState::Spy_Working;
+ }
+
+ // Do the work without lock, so other threads can read the current state.
+ SpyOnUnregisteredThreads();
+ }
+}
+
+void SamplerThread::SleepMicro(uint32_t aMicroseconds) {
+ // For now, keep the old behaviour of minimum Sleep(1), even for
+ // smaller-than-usual sleeps after an overshoot, unless the user has
+ // explicitly opted into a sub-millisecond profiler interval.
+ if (mIntervalMicroseconds >= 1000) {
+ ::Sleep(std::max(1u, aMicroseconds / 1000));
+ } else {
+ TimeStamp start = TimeStamp::Now();
+ TimeStamp end = start + TimeDuration::FromMicroseconds(aMicroseconds);
+
+ // First, sleep for as many whole milliseconds as possible.
+ if (aMicroseconds >= 1000) {
+ ::Sleep(aMicroseconds / 1000);
+ }
+
+ // Then, spin until enough time has passed.
+ while (TimeStamp::Now() < end) {
+ YieldProcessor();
+ }
+ }
+}
+
+void SamplerThread::Stop(PSLockRef aLock) {
+ if ((!mNoTimerResolutionChange) && (mIntervalMicroseconds < 10 * 1000)) {
+ // Disable any timer resolution changes we've made. Do it now while
+ // gPSMutex is locked, i.e. before any other SamplerThread can be created
+ // and call ::timeBeginPeriod().
+ //
+ // It's safe to do this now even though this SamplerThread is still alive,
+ // because the next time the main loop of Run() iterates it won't get past
+ // the mActivityGeneration check, and so it won't make any more ::Sleep()
+ // calls.
+ ::timeEndPeriod(mIntervalMicroseconds / 1000);
+ }
+
+ mSampler.Disable(aLock);
+}
+
+// END SamplerThread target specifics
+////////////////////////////////////////////////////////////////////////
+
+static void PlatformInit(PSLockRef aLock) {}
+
+#if defined(HAVE_NATIVE_UNWIND)
+# define REGISTERS_SYNC_POPULATE(regs) \
+ CONTEXT context; \
+ RtlCaptureContext(&context); \
+ PopulateRegsFromContext(regs, &context);
+#endif
+
+#if defined(GP_PLAT_amd64_windows)
+
+// Use InitializeWin64ProfilerHooks from the base profiler.
+
+namespace mozilla {
+namespace baseprofiler {
+MFBT_API void InitializeWin64ProfilerHooks();
+} // namespace baseprofiler
+} // namespace mozilla
+
+using mozilla::baseprofiler::InitializeWin64ProfilerHooks;
+
+#endif // defined(GP_PLAT_amd64_windows)
diff --git a/tools/profiler/core/platform.cpp b/tools/profiler/core/platform.cpp
new file mode 100644
index 0000000000..8950c48b58
--- /dev/null
+++ b/tools/profiler/core/platform.cpp
@@ -0,0 +1,7067 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+// There are three kinds of samples done by the profiler.
+//
+// - A "periodic" sample is the most complex kind. It is done in response to a
+// timer while the profiler is active. It involves writing a stack trace plus
+// a variety of other values (memory measurements, responsiveness
+// measurements, markers, etc.) into the main ProfileBuffer. The sampling is
+// done from off-thread, and so SuspendAndSampleAndResumeThread() is used to
+// get the register values.
+//
+// - A "synchronous" sample is a simpler kind. It is done in response to an API
+// call (profiler_get_backtrace()). It involves writing a stack trace and
+// little else into a temporary ProfileBuffer, and wrapping that up in a
+// ProfilerBacktrace that can be subsequently used in a marker. The sampling
+// is done on-thread, and so REGISTERS_SYNC_POPULATE() is used to get the
+// register values.
+//
+// - A "backtrace" sample is the simplest kind. It is done in response to an
+// API call (profiler_suspend_and_sample_thread()). It involves getting a
+// stack trace via a ProfilerStackCollector; it does not write to a
+// ProfileBuffer. The sampling is done from off-thread, and so uses
+// SuspendAndSampleAndResumeThread() to get the register values.
+
+#include "platform.h"
+
+#include "GeckoProfiler.h"
+#include "GeckoProfilerReporter.h"
+#include "PageInformation.h"
+#include "PowerCounters.h"
+#include "ProfileBuffer.h"
+#include "ProfiledThreadData.h"
+#include "ProfilerBacktrace.h"
+#include "ProfilerChild.h"
+#include "ProfilerCodeAddressService.h"
+#include "ProfilerControl.h"
+#include "ProfilerIOInterposeObserver.h"
+#include "ProfilerParent.h"
+#include "ProfilerRustBindings.h"
+#include "mozilla/MozPromise.h"
+#include "shared-libraries.h"
+#include "VTuneProfiler.h"
+
+#include "js/ProfilingFrameIterator.h"
+#include "memory_hooks.h"
+#include "mozilla/ArrayUtils.h"
+#include "mozilla/AutoProfilerLabel.h"
+#include "mozilla/BaseAndGeckoProfilerDetail.h"
+#include "mozilla/ExtensionPolicyService.h"
+#include "mozilla/extensions/WebExtensionPolicy.h"
+#include "mozilla/glean/GleanMetrics.h"
+#include "mozilla/Monitor.h"
+#include "mozilla/Preferences.h"
+#include "mozilla/Printf.h"
+#include "mozilla/ProcInfo.h"
+#include "mozilla/ProfileBufferChunkManagerSingle.h"
+#include "mozilla/ProfileBufferChunkManagerWithLocalLimit.h"
+#include "mozilla/ProfileChunkedBuffer.h"
+#include "mozilla/SchedulerGroup.h"
+#include "mozilla/Services.h"
+#include "mozilla/StackWalk.h"
+#ifdef XP_WIN
+# include "mozilla/StackWalkThread.h"
+#endif
+#include "mozilla/StaticPtr.h"
+#include "mozilla/ThreadLocal.h"
+#include "mozilla/TimeStamp.h"
+#include "mozilla/UniquePtr.h"
+#include "mozilla/Vector.h"
+#include "BaseProfiler.h"
+#include "nsDirectoryServiceDefs.h"
+#include "nsDirectoryServiceUtils.h"
+#include "nsIDocShell.h"
+#include "nsIHttpProtocolHandler.h"
+#include "nsIObserverService.h"
+#include "nsIPropertyBag2.h"
+#include "nsIXULAppInfo.h"
+#include "nsIXULRuntime.h"
+#include "nsJSPrincipals.h"
+#include "nsMemoryReporterManager.h"
+#include "nsPIDOMWindow.h"
+#include "nsProfilerStartParams.h"
+#include "nsScriptSecurityManager.h"
+#include "nsSystemInfo.h"
+#include "nsThreadUtils.h"
+#include "nsXULAppAPI.h"
+#include "Tracing.h"
+#include "prdtoa.h"
+#include "prtime.h"
+
+#include <algorithm>
+#include <errno.h>
+#include <fstream>
+#include <ostream>
+#include <set>
+#include <sstream>
+#include <string_view>
+#include <type_traits>
+
+#if defined(GP_OS_android)
+# include "JavaExceptions.h"
+# include "mozilla/java/GeckoJavaSamplerNatives.h"
+# include "mozilla/jni/Refs.h"
+#endif
+
+#if defined(GP_OS_darwin)
+# include "nsCocoaFeatures.h"
+#endif
+
+#if defined(GP_PLAT_amd64_darwin)
+# include <cpuid.h>
+#endif
+
+#if defined(GP_OS_windows)
+# include <processthreadsapi.h>
+
+// GetThreadInformation is not available on Windows 7.
+WINBASEAPI
+BOOL WINAPI GetThreadInformation(
+ _In_ HANDLE hThread, _In_ THREAD_INFORMATION_CLASS ThreadInformationClass,
+ _Out_writes_bytes_(ThreadInformationSize) LPVOID ThreadInformation,
+ _In_ DWORD ThreadInformationSize);
+
+#endif
+
+// Win32 builds always have frame pointers, so FramePointerStackWalk() always
+// works.
+#if defined(GP_PLAT_x86_windows)
+# define HAVE_NATIVE_UNWIND
+# define USE_FRAME_POINTER_STACK_WALK
+#endif
+
+// Win64 builds always omit frame pointers, so we use the slower
+// MozStackWalk(), which works in that case.
+#if defined(GP_PLAT_amd64_windows)
+# define HAVE_NATIVE_UNWIND
+# define USE_MOZ_STACK_WALK
+#endif
+
+// AArch64 Win64 doesn't seem to use frame pointers, so we use the slower
+// MozStackWalk().
+#if defined(GP_PLAT_arm64_windows)
+# define HAVE_NATIVE_UNWIND
+# define USE_MOZ_STACK_WALK
+#endif
+
+// Mac builds use FramePointerStackWalk(). Even if we build without
+// frame pointers, we'll still get useful stacks in system libraries
+// because those always have frame pointers.
+// We don't use MozStackWalk() on Mac.
+#if defined(GP_OS_darwin)
+# define HAVE_NATIVE_UNWIND
+# define USE_FRAME_POINTER_STACK_WALK
+#endif
+
+// Android builds use the ARM Exception Handling ABI to unwind.
+#if defined(GP_PLAT_arm_linux) || defined(GP_PLAT_arm_android)
+# define HAVE_NATIVE_UNWIND
+# define USE_EHABI_STACKWALK
+# include "EHABIStackWalk.h"
+#endif
+
+// Linux/BSD builds use LUL, which uses DWARF info to unwind stacks.
+#if defined(GP_PLAT_amd64_linux) || defined(GP_PLAT_x86_linux) || \
+ defined(GP_PLAT_amd64_android) || defined(GP_PLAT_x86_android) || \
+ defined(GP_PLAT_mips64_linux) || defined(GP_PLAT_arm64_linux) || \
+ defined(GP_PLAT_arm64_android) || defined(GP_PLAT_amd64_freebsd) || \
+ defined(GP_PLAT_arm64_freebsd)
+# define HAVE_NATIVE_UNWIND
+# define USE_LUL_STACKWALK
+# include "lul/LulMain.h"
+# include "lul/platform-linux-lul.h"
+
+// On linux we use LUL for periodic samples and synchronous samples, but we use
+// FramePointerStackWalk for backtrace samples when MOZ_PROFILING is enabled.
+// (See the comment at the top of the file for a definition of
+// periodic/synchronous/backtrace.).
+//
+// FramePointerStackWalk can produce incomplete stacks when the current entry is
+// in a shared library without framepointers, however LUL can take a long time
+// to initialize, which is undesirable for consumers of
+// profiler_suspend_and_sample_thread like the Background Hang Reporter.
+# if defined(MOZ_PROFILING)
+# define USE_FRAME_POINTER_STACK_WALK
+# endif
+#endif
+
+// We can only stackwalk without expensive initialization on platforms which
+// support FramePointerStackWalk or MozStackWalk. LUL Stackwalking requires
+// initializing LUL, and EHABIStackWalk requires initializing EHABI, both of
+// which can be expensive.
+#if defined(USE_FRAME_POINTER_STACK_WALK) || defined(USE_MOZ_STACK_WALK)
+# define HAVE_FASTINIT_NATIVE_UNWIND
+#endif
+
+#ifdef MOZ_VALGRIND
+# include <valgrind/memcheck.h>
+#else
+# define VALGRIND_MAKE_MEM_DEFINED(_addr, _len) ((void)0)
+#endif
+
+#if defined(GP_OS_linux) || defined(GP_OS_android) || defined(GP_OS_freebsd)
+# include <ucontext.h>
+#endif
+
+using namespace mozilla;
+using namespace mozilla::literals::ProportionValue_literals;
+
+using mozilla::profiler::detail::RacyFeatures;
+using ThreadRegistration = mozilla::profiler::ThreadRegistration;
+using ThreadRegistrationInfo = mozilla::profiler::ThreadRegistrationInfo;
+using ThreadRegistry = mozilla::profiler::ThreadRegistry;
+
+LazyLogModule gProfilerLog("prof");
+
+ProfileChunkedBuffer& profiler_get_core_buffer() {
+ // Defer to the Base Profiler in mozglue to create the core buffer if needed,
+ // and keep a reference here, for quick access in xul.
+ static ProfileChunkedBuffer& sProfileChunkedBuffer =
+ baseprofiler::profiler_get_core_buffer();
+ return sProfileChunkedBuffer;
+}
+
+mozilla::Atomic<int, mozilla::MemoryOrdering::Relaxed> gSkipSampling;
+
+#if defined(GP_OS_android)
+class GeckoJavaSampler
+ : public java::GeckoJavaSampler::Natives<GeckoJavaSampler> {
+ private:
+ GeckoJavaSampler();
+
+ public:
+ static double GetProfilerTime() {
+ if (!profiler_is_active()) {
+ return 0.0;
+ }
+ return profiler_time();
+ };
+
+ static void JavaStringArrayToCharArray(jni::ObjectArray::Param& aJavaArray,
+ Vector<const char*>& aCharArray,
+ JNIEnv* aJni) {
+ int arraySize = aJavaArray->Length();
+ for (int i = 0; i < arraySize; i++) {
+ jstring javaString =
+ (jstring)(aJni->GetObjectArrayElement(aJavaArray.Get(), i));
+ const char* filterString = aJni->GetStringUTFChars(javaString, 0);
+ // FIXME. These strings are leaked.
+ MOZ_RELEASE_ASSERT(aCharArray.append(filterString));
+ }
+ }
+
+ static void StartProfiler(jni::ObjectArray::Param aFiltersArray,
+ jni::ObjectArray::Param aFeaturesArray) {
+ JNIEnv* jni = jni::GetEnvForThread();
+ Vector<const char*> filtersTemp;
+ Vector<const char*> featureStringArray;
+
+ JavaStringArrayToCharArray(aFiltersArray, filtersTemp, jni);
+ JavaStringArrayToCharArray(aFeaturesArray, featureStringArray, jni);
+
+ uint32_t features = 0;
+ features = ParseFeaturesFromStringArray(featureStringArray.begin(),
+ featureStringArray.length());
+
+ // 128 * 1024 * 1024 is the entries preset that is given in
+ // devtools/client/performance-new/shared/background.jsm.js
+ profiler_start(PowerOfTwo32(128 * 1024 * 1024), 5.0, features,
+ filtersTemp.begin(), filtersTemp.length(), 0, Nothing());
+ }
+
+ static void StopProfiler(jni::Object::Param aGeckoResult) {
+ auto result = java::GeckoResult::LocalRef(aGeckoResult);
+ profiler_pause();
+ nsCOMPtr<nsIProfiler> nsProfiler(
+ do_GetService("@mozilla.org/tools/profiler;1"));
+ nsProfiler->GetProfileDataAsGzippedArrayBufferAndroid(0)->Then(
+ GetMainThreadSerialEventTarget(), __func__,
+ [result](FallibleTArray<uint8_t> compressedProfile) {
+ result->Complete(jni::ByteArray::New(
+ reinterpret_cast<const int8_t*>(compressedProfile.Elements()),
+ compressedProfile.Length()));
+
+ // Done with capturing a profile. Stop the profiler.
+ profiler_stop();
+ },
+ [result](nsresult aRv) {
+ char errorString[9];
+ sprintf(errorString, "%08x", aRv);
+ result->CompleteExceptionally(
+ mozilla::java::sdk::IllegalStateException::New(errorString)
+ .Cast<jni::Throwable>());
+
+ // Failed to capture a profile. Stop the profiler.
+ profiler_stop();
+ });
+ }
+};
+#endif
+
+constexpr static bool ValidateFeatures() {
+ int expectedFeatureNumber = 0;
+
+ // Feature numbers should start at 0 and increase by 1 each.
+#define CHECK_FEATURE(n_, str_, Name_, desc_) \
+ if ((n_) != expectedFeatureNumber) { \
+ return false; \
+ } \
+ ++expectedFeatureNumber;
+
+ PROFILER_FOR_EACH_FEATURE(CHECK_FEATURE)
+
+#undef CHECK_FEATURE
+
+ return true;
+}
+
+static_assert(ValidateFeatures(), "Feature list is invalid");
+
+// Return all features that are available on this platform.
+static uint32_t AvailableFeatures() {
+ uint32_t features = 0;
+
+#define ADD_FEATURE(n_, str_, Name_, desc_) \
+ ProfilerFeature::Set##Name_(features);
+
+ // Add all the possible features.
+ PROFILER_FOR_EACH_FEATURE(ADD_FEATURE)
+
+#undef ADD_FEATURE
+
+ // Now remove features not supported on this platform/configuration.
+#if !defined(GP_OS_android)
+ ProfilerFeature::ClearJava(features);
+#endif
+#if !defined(HAVE_NATIVE_UNWIND)
+ ProfilerFeature::ClearStackWalk(features);
+#endif
+#if defined(MOZ_REPLACE_MALLOC) && defined(MOZ_PROFILER_MEMORY)
+ if (getenv("XPCOM_MEM_BLOAT_LOG")) {
+ NS_WARNING("XPCOM_MEM_BLOAT_LOG is set, disabling native allocations.");
+ // The memory hooks are available, but the bloat log is enabled, which is
+ // not compatible with the native allocations tracking. See the comment in
+ // enable_native_allocations() (tools/profiler/core/memory_hooks.cpp) for
+ // more information.
+ ProfilerFeature::ClearNativeAllocations(features);
+ }
+#else
+ // The memory hooks are not available.
+ ProfilerFeature::ClearNativeAllocations(features);
+#endif
+
+#if !defined(GP_OS_windows)
+ ProfilerFeature::ClearNoTimerResolutionChange(features);
+#endif
+
+ return features;
+}
+
+// Default features common to all contexts (even if not available).
+static constexpr uint32_t DefaultFeatures() {
+ return ProfilerFeature::Java | ProfilerFeature::JS |
+ ProfilerFeature::StackWalk | ProfilerFeature::CPUUtilization |
+ ProfilerFeature::Screenshots | ProfilerFeature::ProcessCPU;
+}
+
+// Extra default features when MOZ_PROFILER_STARTUP is set (even if not
+// available).
+static constexpr uint32_t StartupExtraDefaultFeatures() {
+ // Enable file I/Os by default for startup profiles as startup is heavy on
+ // I/O operations.
+ return ProfilerFeature::FileIOAll | ProfilerFeature::IPCMessages;
+}
+
+Json::String ToCompactString(const Json::Value& aJsonValue) {
+ Json::StreamWriterBuilder builder;
+ // No indentations, and no newlines.
+ builder["indentation"] = "";
+ // This removes spaces after colons.
+ builder["enableYAMLCompatibility"] = false;
+ // Only 6 digits after the decimal point; timestamps in ms have ns precision.
+ builder["precision"] = 6;
+ builder["precisionType"] = "decimal";
+
+ return Json::writeString(builder, aJsonValue);
+}
+
+/* static */ mozilla::baseprofiler::detail::BaseProfilerMutex
+ ProfilingLog::gMutex;
+/* static */ mozilla::UniquePtr<Json::Value> ProfilingLog::gLog;
+
+/* static */ void ProfilingLog::Init() {
+ mozilla::baseprofiler::detail::BaseProfilerAutoLock lock{gMutex};
+ MOZ_ASSERT(!gLog);
+ gLog = mozilla::MakeUniqueFallible<Json::Value>(Json::objectValue);
+ if (gLog) {
+ (*gLog)[Json::StaticString{"profilingLogBegin" TIMESTAMP_JSON_SUFFIX}] =
+ ProfilingLog::Timestamp();
+ }
+}
+
+/* static */ void ProfilingLog::Destroy() {
+ mozilla::baseprofiler::detail::BaseProfilerAutoLock lock{gMutex};
+ MOZ_ASSERT(gLog);
+ gLog = nullptr;
+}
+
+/* static */ bool ProfilingLog::IsLockedOnCurrentThread() {
+ return gMutex.IsLockedOnCurrentThread();
+}
+
+// RAII class to lock the profiler mutex.
+// It provides a mechanism to determine if it is locked or not in order for
+// memory hooks to avoid re-entering the profiler locked state.
+// Locking order: Profiler, ThreadRegistry, ThreadRegistration.
+class MOZ_RAII PSAutoLock {
+ public:
+ PSAutoLock()
+ : mLock([]() -> mozilla::baseprofiler::detail::BaseProfilerMutex& {
+ // In DEBUG builds, *before* we attempt to lock gPSMutex, we want to
+ // check that the ThreadRegistry, ThreadRegistration, and ProfilingLog
+ // mutexes are *not* locked on this thread, to avoid inversion
+ // deadlocks.
+ MOZ_ASSERT(!ThreadRegistry::IsRegistryMutexLockedOnCurrentThread());
+ MOZ_ASSERT(!ThreadRegistration::IsDataMutexLockedOnCurrentThread());
+ MOZ_ASSERT(!ProfilingLog::IsLockedOnCurrentThread());
+ return gPSMutex;
+ }()) {}
+
+ PSAutoLock(const PSAutoLock&) = delete;
+ void operator=(const PSAutoLock&) = delete;
+
+ static bool IsLockedOnCurrentThread() {
+ return gPSMutex.IsLockedOnCurrentThread();
+ }
+
+ private:
+ static mozilla::baseprofiler::detail::BaseProfilerMutex gPSMutex;
+ mozilla::baseprofiler::detail::BaseProfilerAutoLock mLock;
+};
+
+/* static */ mozilla::baseprofiler::detail::BaseProfilerMutex
+ PSAutoLock::gPSMutex{"Gecko Profiler mutex"};
+
+// Only functions that take a PSLockRef arg can access CorePS's and ActivePS's
+// fields.
+typedef const PSAutoLock& PSLockRef;
+
+#define PS_GET(type_, name_) \
+ static type_ name_(PSLockRef) { \
+ MOZ_ASSERT(sInstance); \
+ return sInstance->m##name_; \
+ }
+
+#define PS_GET_LOCKLESS(type_, name_) \
+ static type_ name_() { \
+ MOZ_ASSERT(sInstance); \
+ return sInstance->m##name_; \
+ }
+
+#define PS_GET_AND_SET(type_, name_) \
+ PS_GET(type_, name_) \
+ static void Set##name_(PSLockRef, type_ a##name_) { \
+ MOZ_ASSERT(sInstance); \
+ sInstance->m##name_ = a##name_; \
+ }
+
+static constexpr size_t MAX_JS_FRAMES =
+ mozilla::profiler::ThreadRegistrationData::MAX_JS_FRAMES;
+using JsFrame = mozilla::profiler::ThreadRegistrationData::JsFrame;
+using JsFrameBuffer = mozilla::profiler::ThreadRegistrationData::JsFrameBuffer;
+
+// All functions in this file can run on multiple threads unless they have an
+// NS_IsMainThread() assertion.
+
+// This class contains the profiler's core global state, i.e. that which is
+// valid even when the profiler is not active. Most profile operations can't do
+// anything useful when this class is not instantiated, so we release-assert
+// its non-nullness in all such operations.
+//
+// Accesses to CorePS are guarded by gPSMutex. Getters and setters take a
+// PSAutoLock reference as an argument as proof that the gPSMutex is currently
+// locked. This makes it clear when gPSMutex is locked and helps avoid
+// accidental unlocked accesses to global state. There are ways to circumvent
+// this mechanism, but please don't do so without *very* good reason and a
+// detailed explanation.
+//
+// The exceptions to this rule:
+//
+// - mProcessStartTime, because it's immutable;
+class CorePS {
+ private:
+ CorePS()
+ : mProcessStartTime(TimeStamp::ProcessCreation())
+#ifdef USE_LUL_STACKWALK
+ ,
+ mLul(nullptr)
+#endif
+ {
+ MOZ_ASSERT(NS_IsMainThread(),
+ "CorePS must be created from the main thread");
+ }
+
+ ~CorePS() {
+#ifdef USE_LUL_STACKWALK
+ delete sInstance->mLul;
+#endif
+ }
+
+ public:
+ static void Create(PSLockRef aLock) {
+ MOZ_ASSERT(!sInstance);
+ sInstance = new CorePS();
+ }
+
+ static void Destroy(PSLockRef aLock) {
+ MOZ_ASSERT(sInstance);
+ delete sInstance;
+ sInstance = nullptr;
+ }
+
+ // Unlike ActivePS::Exists(), CorePS::Exists() can be called without gPSMutex
+ // being locked. This is because CorePS is instantiated so early on the main
+ // thread that we don't have to worry about it being racy.
+ static bool Exists() { return !!sInstance; }
+
+ static void AddSizeOf(PSLockRef, MallocSizeOf aMallocSizeOf,
+ size_t& aProfSize, size_t& aLulSize) {
+ MOZ_ASSERT(sInstance);
+
+ aProfSize += aMallocSizeOf(sInstance);
+
+ aProfSize += ThreadRegistry::SizeOfIncludingThis(aMallocSizeOf);
+
+ for (auto& registeredPage : sInstance->mRegisteredPages) {
+ aProfSize += registeredPage->SizeOfIncludingThis(aMallocSizeOf);
+ }
+
+ // Measurement of the following things may be added later if DMD finds it
+ // is worthwhile:
+ // - CorePS::mRegisteredPages itself (its elements' children are
+ // measured above)
+
+#if defined(USE_LUL_STACKWALK)
+ if (lul::LUL* lulPtr = sInstance->mLul; lulPtr) {
+ aLulSize += lulPtr->SizeOfIncludingThis(aMallocSizeOf);
+ }
+#endif
+ }
+
+ // No PSLockRef is needed for this field because it's immutable.
+ PS_GET_LOCKLESS(TimeStamp, ProcessStartTime)
+
+ PS_GET(JsFrameBuffer&, JsFrames)
+
+ PS_GET(Vector<RefPtr<PageInformation>>&, RegisteredPages)
+
+ static void AppendRegisteredPage(PSLockRef,
+ RefPtr<PageInformation>&& aRegisteredPage) {
+ MOZ_ASSERT(sInstance);
+ struct RegisteredPageComparator {
+ PageInformation* aA;
+ bool operator()(PageInformation* aB) const { return aA->Equals(aB); }
+ };
+
+ auto foundPageIter = std::find_if(
+ sInstance->mRegisteredPages.begin(), sInstance->mRegisteredPages.end(),
+ RegisteredPageComparator{aRegisteredPage.get()});
+
+ if (foundPageIter != sInstance->mRegisteredPages.end()) {
+ if ((*foundPageIter)->Url().EqualsLiteral("about:blank")) {
+ // When a BrowsingContext is loaded, the first url loaded in it will be
+ // about:blank, and if the principal matches, the first document loaded
+ // in it will share an inner window. That's why we should delete the
+ // intermittent about:blank if they share the inner window.
+ sInstance->mRegisteredPages.erase(foundPageIter);
+ } else {
+ // Do not register the same page again.
+ return;
+ }
+ }
+
+ MOZ_RELEASE_ASSERT(
+ sInstance->mRegisteredPages.append(std::move(aRegisteredPage)));
+ }
+
+ static void RemoveRegisteredPage(PSLockRef,
+ uint64_t aRegisteredInnerWindowID) {
+ MOZ_ASSERT(sInstance);
+ // Remove RegisteredPage from mRegisteredPages by given inner window ID.
+ sInstance->mRegisteredPages.eraseIf([&](const RefPtr<PageInformation>& rd) {
+ return rd->InnerWindowID() == aRegisteredInnerWindowID;
+ });
+ }
+
+ static void ClearRegisteredPages(PSLockRef) {
+ MOZ_ASSERT(sInstance);
+ sInstance->mRegisteredPages.clear();
+ }
+
+ PS_GET(const Vector<BaseProfilerCount*>&, Counters)
+
+ static void AppendCounter(PSLockRef, BaseProfilerCount* aCounter) {
+ MOZ_ASSERT(sInstance);
+ // we don't own the counter; they may be stored in static objects
+ MOZ_RELEASE_ASSERT(sInstance->mCounters.append(aCounter));
+ }
+
+ static void RemoveCounter(PSLockRef, BaseProfilerCount* aCounter) {
+ // we may be called to remove a counter after the profiler is stopped or
+ // late in shutdown.
+ if (sInstance) {
+ auto* counter = std::find(sInstance->mCounters.begin(),
+ sInstance->mCounters.end(), aCounter);
+ MOZ_RELEASE_ASSERT(counter != sInstance->mCounters.end());
+ sInstance->mCounters.erase(counter);
+ }
+ }
+
+#ifdef USE_LUL_STACKWALK
+ static lul::LUL* Lul() {
+ MOZ_RELEASE_ASSERT(sInstance);
+ return sInstance->mLul;
+ }
+ static void SetLul(UniquePtr<lul::LUL> aLul) {
+ MOZ_RELEASE_ASSERT(sInstance);
+ MOZ_RELEASE_ASSERT(
+ sInstance->mLul.compareExchange(nullptr, aLul.release()));
+ }
+#endif
+
+ PS_GET_AND_SET(const nsACString&, ProcessName)
+ PS_GET_AND_SET(const nsACString&, ETLDplus1)
+
+ private:
+ // The singleton instance
+ static CorePS* sInstance;
+
+ // The time that the process started.
+ const TimeStamp mProcessStartTime;
+
+ // Info on all the registered pages.
+ // InnerWindowIDs in mRegisteredPages are unique.
+ Vector<RefPtr<PageInformation>> mRegisteredPages;
+
+ // Non-owning pointers to all active counters
+ Vector<BaseProfilerCount*> mCounters;
+
+#ifdef USE_LUL_STACKWALK
+ // LUL's state. Null prior to the first activation, non-null thereafter.
+ // Owned by this CorePS.
+ mozilla::Atomic<lul::LUL*> mLul;
+#endif
+
+ // Process name, provided by child process initialization code.
+ nsAutoCString mProcessName;
+ // Private name, provided by child process initialization code (eTLD+1 in
+ // fission)
+ nsAutoCString mETLDplus1;
+
+ // This memory buffer is used by the MergeStacks mechanism. Previously it was
+ // stack allocated, but this led to a stack overflow, as it was too much
+ // memory. Here the buffer can be pre-allocated, and shared with the
+ // MergeStacks feature as needed. MergeStacks is only run while holding the
+ // lock, so it is safe to have only one instance allocated for all of the
+ // threads.
+ JsFrameBuffer mJsFrames;
+};
+
+CorePS* CorePS::sInstance = nullptr;
+
+void locked_profiler_add_sampled_counter(PSLockRef aLock,
+ BaseProfilerCount* aCounter) {
+ CorePS::AppendCounter(aLock, aCounter);
+}
+
+void locked_profiler_remove_sampled_counter(PSLockRef aLock,
+ BaseProfilerCount* aCounter) {
+ // Note: we don't enforce a final sample, though we could do so if the
+ // profiler was active
+ CorePS::RemoveCounter(aLock, aCounter);
+}
+
+class SamplerThread;
+
+static SamplerThread* NewSamplerThread(PSLockRef aLock, uint32_t aGeneration,
+ double aInterval, uint32_t aFeatures);
+
+struct LiveProfiledThreadData {
+ UniquePtr<ProfiledThreadData> mProfiledThreadData;
+};
+
+// The buffer size is provided as a number of "entries", this is their size in
+// bytes.
+constexpr static uint32_t scBytesPerEntry = 8;
+
+// This class contains the profiler's global state that is valid only when the
+// profiler is active. When not instantiated, the profiler is inactive.
+//
+// Accesses to ActivePS are guarded by gPSMutex, in much the same fashion as
+// CorePS.
+//
+class ActivePS {
+ private:
+ // We need to decide how many chunks of what size we want to fit in the given
+ // total maximum capacity for this process, in the (likely) context of
+ // multiple processes doing the same choice and having an inter-process
+ // mechanism to control the overal memory limit.
+
+ // Minimum chunk size allowed, enough for at least one stack.
+ constexpr static uint32_t scMinimumChunkSize =
+ 2 * ProfileBufferChunkManager::scExpectedMaximumStackSize;
+
+ // Ideally we want at least 2 unreleased chunks to work with (1 current and 1
+ // next), and 2 released chunks (so that one can be recycled when old, leaving
+ // one with some data).
+ constexpr static uint32_t scMinimumNumberOfChunks = 4;
+
+ // And we want to limit chunks to a maximum size, which is a compromise
+ // between:
+ // - A big size, which helps with reducing the rate of allocations and IPCs.
+ // - A small size, which helps with equalizing the duration of recorded data
+ // (as the inter-process controller will discard the oldest chunks in all
+ // Firefox processes).
+ constexpr static uint32_t scMaximumChunkSize = 1024 * 1024;
+
+ public:
+ // We should be able to store at least the minimum number of the smallest-
+ // possible chunks.
+ constexpr static uint32_t scMinimumBufferSize =
+ scMinimumNumberOfChunks * scMinimumChunkSize;
+ // Note: Keep in sync with GeckoThread.maybeStartGeckoProfiler:
+ // https://searchfox.org/mozilla-central/source/mobile/android/geckoview/src/main/java/org/mozilla/gecko/GeckoThread.java
+ constexpr static uint32_t scMinimumBufferEntries =
+ scMinimumBufferSize / scBytesPerEntry;
+
+ // Limit to 2GiB.
+ constexpr static uint32_t scMaximumBufferSize = 2u * 1024u * 1024u * 1024u;
+ constexpr static uint32_t scMaximumBufferEntries =
+ scMaximumBufferSize / scBytesPerEntry;
+
+ constexpr static uint32_t ClampToAllowedEntries(uint32_t aEntries) {
+ if (aEntries <= scMinimumBufferEntries) {
+ return scMinimumBufferEntries;
+ }
+ if (aEntries >= scMaximumBufferEntries) {
+ return scMaximumBufferEntries;
+ }
+ return aEntries;
+ }
+
+ private:
+ constexpr static uint32_t ChunkSizeForEntries(uint32_t aEntries) {
+ return uint32_t(std::min(size_t(ClampToAllowedEntries(aEntries)) *
+ scBytesPerEntry / scMinimumNumberOfChunks,
+ size_t(scMaximumChunkSize)));
+ }
+
+ static uint32_t AdjustFeatures(uint32_t aFeatures, uint32_t aFilterCount) {
+ // Filter out any features unavailable in this platform/configuration.
+ aFeatures &= AvailableFeatures();
+
+ // Some features imply others.
+ if (aFeatures & ProfilerFeature::FileIOAll) {
+ aFeatures |= ProfilerFeature::MainThreadIO | ProfilerFeature::FileIO;
+ } else if (aFeatures & ProfilerFeature::FileIO) {
+ aFeatures |= ProfilerFeature::MainThreadIO;
+ }
+
+ if (aFeatures & ProfilerFeature::CPUAllThreads) {
+ aFeatures |= ProfilerFeature::CPUUtilization;
+ }
+
+ return aFeatures;
+ }
+
+ bool ShouldInterposeIOs() {
+ return ProfilerFeature::HasMainThreadIO(mFeatures) ||
+ ProfilerFeature::HasFileIO(mFeatures) ||
+ ProfilerFeature::HasFileIOAll(mFeatures);
+ }
+
+ ActivePS(
+ PSLockRef aLock, const TimeStamp& aProfilingStartTime,
+ PowerOfTwo32 aCapacity, double aInterval, uint32_t aFeatures,
+ const char** aFilters, uint32_t aFilterCount, uint64_t aActiveTabID,
+ const Maybe<double>& aDuration,
+ UniquePtr<ProfileBufferChunkManagerWithLocalLimit> aChunkManagerOrNull)
+ : mProfilingStartTime(aProfilingStartTime),
+ mGeneration(sNextGeneration++),
+ mCapacity(aCapacity),
+ mDuration(aDuration),
+ mInterval(aInterval),
+ mFeatures(AdjustFeatures(aFeatures, aFilterCount)),
+ mActiveTabID(aActiveTabID),
+ mProfileBufferChunkManager(
+ aChunkManagerOrNull
+ ? std::move(aChunkManagerOrNull)
+ : MakeUnique<ProfileBufferChunkManagerWithLocalLimit>(
+ size_t(ClampToAllowedEntries(aCapacity.Value())) *
+ scBytesPerEntry,
+ ChunkSizeForEntries(aCapacity.Value()))),
+ mProfileBuffer([this]() -> ProfileChunkedBuffer& {
+ ProfileChunkedBuffer& coreBuffer = profiler_get_core_buffer();
+ coreBuffer.SetChunkManagerIfDifferent(*mProfileBufferChunkManager);
+ return coreBuffer;
+ }()),
+ mMaybeProcessCPUCounter(ProfilerFeature::HasProcessCPU(aFeatures)
+ ? new ProcessCPUCounter(aLock)
+ : nullptr),
+ mMaybePowerCounters(nullptr),
+ // The new sampler thread doesn't start sampling immediately because the
+ // main loop within Run() is blocked until this function's caller
+ // unlocks gPSMutex.
+ mSamplerThread(
+ NewSamplerThread(aLock, mGeneration, aInterval, aFeatures)),
+ mIsPaused(false),
+ mIsSamplingPaused(false) {
+ ProfilingLog::Init();
+
+ // Deep copy and lower-case aFilters.
+ MOZ_ALWAYS_TRUE(mFilters.resize(aFilterCount));
+ MOZ_ALWAYS_TRUE(mFiltersLowered.resize(aFilterCount));
+ for (uint32_t i = 0; i < aFilterCount; ++i) {
+ mFilters[i] = aFilters[i];
+ mFiltersLowered[i].reserve(mFilters[i].size());
+ std::transform(mFilters[i].cbegin(), mFilters[i].cend(),
+ std::back_inserter(mFiltersLowered[i]), ::tolower);
+ }
+
+#if !defined(RELEASE_OR_BETA)
+ if (ShouldInterposeIOs()) {
+ // We need to register the observer on the main thread, because we want
+ // to observe IO that happens on the main thread.
+ // IOInterposer needs to be initialized before calling
+ // IOInterposer::Register or our observer will be silently dropped.
+ if (NS_IsMainThread()) {
+ IOInterposer::Init();
+ IOInterposer::Register(IOInterposeObserver::OpAll,
+ &ProfilerIOInterposeObserver::GetInstance());
+ } else {
+ NS_DispatchToMainThread(
+ NS_NewRunnableFunction("ActivePS::ActivePS", []() {
+ // Note: This could theoretically happen after ActivePS gets
+ // destroyed, but it's ok:
+ // - The Observer always checks that the profiler is (still)
+ // active before doing its work.
+ // - The destruction should happen on the same thread as this
+ // construction, so the un-registration will also be dispatched
+ // and queued on the main thread, and run after this.
+ IOInterposer::Init();
+ IOInterposer::Register(
+ IOInterposeObserver::OpAll,
+ &ProfilerIOInterposeObserver::GetInstance());
+ }));
+ }
+ }
+#endif
+
+ if (ProfilerFeature::HasPower(aFeatures)) {
+ mMaybePowerCounters = new PowerCounters();
+ for (const auto& powerCounter : mMaybePowerCounters->GetCounters()) {
+ locked_profiler_add_sampled_counter(aLock, powerCounter);
+ }
+ }
+ }
+
+ ~ActivePS() {
+ MOZ_ASSERT(
+ !mMaybeProcessCPUCounter,
+ "mMaybeProcessCPUCounter should have been deleted before ~ActivePS()");
+ MOZ_ASSERT(
+ !mMaybePowerCounters,
+ "mMaybePowerCounters should have been deleted before ~ActivePS()");
+
+#if !defined(RELEASE_OR_BETA)
+ if (ShouldInterposeIOs()) {
+ // We need to unregister the observer on the main thread, because that's
+ // where we've registered it.
+ if (NS_IsMainThread()) {
+ IOInterposer::Unregister(IOInterposeObserver::OpAll,
+ &ProfilerIOInterposeObserver::GetInstance());
+ } else {
+ NS_DispatchToMainThread(
+ NS_NewRunnableFunction("ActivePS::~ActivePS", []() {
+ IOInterposer::Unregister(
+ IOInterposeObserver::OpAll,
+ &ProfilerIOInterposeObserver::GetInstance());
+ }));
+ }
+ }
+#endif
+ if (mProfileBufferChunkManager) {
+ // We still control the chunk manager, remove it from the core buffer.
+ profiler_get_core_buffer().ResetChunkManager();
+ }
+
+ ProfilingLog::Destroy();
+ }
+
+ bool ThreadSelected(const char* aThreadName) {
+ if (mFiltersLowered.empty()) {
+ return true;
+ }
+
+ std::string name = aThreadName;
+ std::transform(name.begin(), name.end(), name.begin(), ::tolower);
+
+ for (const auto& filter : mFiltersLowered) {
+ if (filter == "*") {
+ return true;
+ }
+
+ // Crude, non UTF-8 compatible, case insensitive substring search
+ if (name.find(filter) != std::string::npos) {
+ return true;
+ }
+
+ // If the filter is "pid:<my pid>", profile all threads.
+ if (mozilla::profiler::detail::FilterHasPid(filter.c_str())) {
+ return true;
+ }
+ }
+
+ return false;
+ }
+
+ public:
+ static void Create(
+ PSLockRef aLock, const TimeStamp& aProfilingStartTime,
+ PowerOfTwo32 aCapacity, double aInterval, uint32_t aFeatures,
+ const char** aFilters, uint32_t aFilterCount, uint64_t aActiveTabID,
+ const Maybe<double>& aDuration,
+ UniquePtr<ProfileBufferChunkManagerWithLocalLimit> aChunkManagerOrNull) {
+ MOZ_ASSERT(!sInstance);
+ sInstance = new ActivePS(aLock, aProfilingStartTime, aCapacity, aInterval,
+ aFeatures, aFilters, aFilterCount, aActiveTabID,
+ aDuration, std::move(aChunkManagerOrNull));
+ }
+
+ [[nodiscard]] static SamplerThread* Destroy(PSLockRef aLock) {
+ MOZ_ASSERT(sInstance);
+ if (sInstance->mMaybeProcessCPUCounter) {
+ locked_profiler_remove_sampled_counter(
+ aLock, sInstance->mMaybeProcessCPUCounter);
+ delete sInstance->mMaybeProcessCPUCounter;
+ sInstance->mMaybeProcessCPUCounter = nullptr;
+ }
+
+ if (sInstance->mMaybePowerCounters) {
+ for (const auto& powerCounter :
+ sInstance->mMaybePowerCounters->GetCounters()) {
+ locked_profiler_remove_sampled_counter(aLock, powerCounter);
+ }
+ delete sInstance->mMaybePowerCounters;
+ sInstance->mMaybePowerCounters = nullptr;
+ }
+
+ auto samplerThread = sInstance->mSamplerThread;
+ delete sInstance;
+ sInstance = nullptr;
+
+ return samplerThread;
+ }
+
+ static bool Exists(PSLockRef) { return !!sInstance; }
+
+ static bool Equals(PSLockRef, PowerOfTwo32 aCapacity,
+ const Maybe<double>& aDuration, double aInterval,
+ uint32_t aFeatures, const char** aFilters,
+ uint32_t aFilterCount, uint64_t aActiveTabID) {
+ MOZ_ASSERT(sInstance);
+ if (sInstance->mCapacity != aCapacity ||
+ sInstance->mDuration != aDuration ||
+ sInstance->mInterval != aInterval ||
+ sInstance->mFeatures != aFeatures ||
+ sInstance->mFilters.length() != aFilterCount ||
+ sInstance->mActiveTabID != aActiveTabID) {
+ return false;
+ }
+
+ for (uint32_t i = 0; i < sInstance->mFilters.length(); ++i) {
+ if (strcmp(sInstance->mFilters[i].c_str(), aFilters[i]) != 0) {
+ return false;
+ }
+ }
+ return true;
+ }
+
+ static size_t SizeOf(PSLockRef, MallocSizeOf aMallocSizeOf) {
+ MOZ_ASSERT(sInstance);
+
+ size_t n = aMallocSizeOf(sInstance);
+
+ n += sInstance->mProfileBuffer.SizeOfExcludingThis(aMallocSizeOf);
+
+ // Measurement of the following members may be added later if DMD finds it
+ // is worthwhile:
+ // - mLiveProfiledThreads (both the array itself, and the contents)
+ // - mDeadProfiledThreads (both the array itself, and the contents)
+ //
+
+ return n;
+ }
+
+ static ThreadProfilingFeatures ProfilingFeaturesForThread(
+ PSLockRef aLock, const ThreadRegistrationInfo& aInfo) {
+ MOZ_ASSERT(sInstance);
+ if (sInstance->ThreadSelected(aInfo.Name())) {
+ // This thread was selected by the user, record everything.
+ return ThreadProfilingFeatures::Any;
+ }
+ ThreadProfilingFeatures features = ThreadProfilingFeatures::NotProfiled;
+ if (ActivePS::FeatureCPUAllThreads(aLock)) {
+ features = Combine(features, ThreadProfilingFeatures::CPUUtilization);
+ }
+ if (ActivePS::FeatureSamplingAllThreads(aLock)) {
+ features = Combine(features, ThreadProfilingFeatures::Sampling);
+ }
+ if (ActivePS::FeatureMarkersAllThreads(aLock)) {
+ features = Combine(features, ThreadProfilingFeatures::Markers);
+ }
+ return features;
+ }
+
+ [[nodiscard]] static bool AppendPostSamplingCallback(
+ PSLockRef, PostSamplingCallback&& aCallback);
+
+ // Writes out the current active configuration of the profile.
+ static void WriteActiveConfiguration(
+ PSLockRef aLock, JSONWriter& aWriter,
+ const Span<const char>& aPropertyName = MakeStringSpan("")) {
+ if (!sInstance) {
+ if (!aPropertyName.empty()) {
+ aWriter.NullProperty(aPropertyName);
+ } else {
+ aWriter.NullElement();
+ }
+ return;
+ };
+
+ if (!aPropertyName.empty()) {
+ aWriter.StartObjectProperty(aPropertyName);
+ } else {
+ aWriter.StartObjectElement();
+ }
+
+ {
+ aWriter.StartArrayProperty("features");
+#define WRITE_ACTIVE_FEATURES(n_, str_, Name_, desc_) \
+ if (profiler_feature_active(ProfilerFeature::Name_)) { \
+ aWriter.StringElement(str_); \
+ }
+
+ PROFILER_FOR_EACH_FEATURE(WRITE_ACTIVE_FEATURES)
+#undef WRITE_ACTIVE_FEATURES
+ aWriter.EndArray();
+ }
+ {
+ aWriter.StartArrayProperty("threads");
+ for (const auto& filter : sInstance->mFilters) {
+ aWriter.StringElement(filter);
+ }
+ aWriter.EndArray();
+ }
+ {
+ // Now write all the simple values.
+
+ // The interval is also available on profile.meta.interval
+ aWriter.DoubleProperty("interval", sInstance->mInterval);
+ aWriter.IntProperty("capacity", sInstance->mCapacity.Value());
+ if (sInstance->mDuration) {
+ aWriter.DoubleProperty("duration", sInstance->mDuration.value());
+ }
+ // Here, we are converting uint64_t to double. Tab IDs are
+ // being created using `nsContentUtils::GenerateProcessSpecificId`, which
+ // is specifically designed to only use 53 of the 64 bits to be lossless
+ // when passed into and out of JS as a double.
+ aWriter.DoubleProperty("activeTabID", sInstance->mActiveTabID);
+ }
+ aWriter.EndObject();
+ }
+
+ PS_GET_LOCKLESS(TimeStamp, ProfilingStartTime)
+
+ PS_GET(uint32_t, Generation)
+
+ PS_GET(PowerOfTwo32, Capacity)
+
+ PS_GET(Maybe<double>, Duration)
+
+ PS_GET(double, Interval)
+
+ PS_GET(uint32_t, Features)
+
+ PS_GET(uint64_t, ActiveTabID)
+
+#define PS_GET_FEATURE(n_, str_, Name_, desc_) \
+ static bool Feature##Name_(PSLockRef) { \
+ MOZ_ASSERT(sInstance); \
+ return ProfilerFeature::Has##Name_(sInstance->mFeatures); \
+ }
+
+ PROFILER_FOR_EACH_FEATURE(PS_GET_FEATURE)
+
+#undef PS_GET_FEATURE
+
+ static uint32_t JSFlags(PSLockRef aLock) {
+ uint32_t Flags = 0;
+ Flags |=
+ FeatureJS(aLock) ? uint32_t(JSInstrumentationFlags::StackSampling) : 0;
+
+ Flags |= FeatureJSAllocations(aLock)
+ ? uint32_t(JSInstrumentationFlags::Allocations)
+ : 0;
+ return Flags;
+ }
+
+ PS_GET(const Vector<std::string>&, Filters)
+ PS_GET(const Vector<std::string>&, FiltersLowered)
+
+ // Not using PS_GET, because only the "Controlled" interface of
+ // `mProfileBufferChunkManager` should be exposed here.
+ static ProfileBufferChunkManagerWithLocalLimit& ControlledChunkManager(
+ PSLockRef) {
+ MOZ_ASSERT(sInstance);
+ MOZ_ASSERT(sInstance->mProfileBufferChunkManager);
+ return *sInstance->mProfileBufferChunkManager;
+ }
+
+ static void FulfillChunkRequests(PSLockRef) {
+ MOZ_ASSERT(sInstance);
+ if (sInstance->mProfileBufferChunkManager) {
+ sInstance->mProfileBufferChunkManager->FulfillChunkRequests();
+ }
+ }
+
+ static ProfileBuffer& Buffer(PSLockRef) {
+ MOZ_ASSERT(sInstance);
+ return sInstance->mProfileBuffer;
+ }
+
+ static const Vector<LiveProfiledThreadData>& LiveProfiledThreads(PSLockRef) {
+ MOZ_ASSERT(sInstance);
+ return sInstance->mLiveProfiledThreads;
+ }
+
+ struct ProfiledThreadListElement {
+ TimeStamp mRegisterTime;
+ JSContext* mJSContext; // Null for unregistered threads.
+ ProfiledThreadData* mProfiledThreadData;
+ };
+ using ProfiledThreadList = Vector<ProfiledThreadListElement>;
+
+ // Returns a ProfiledThreadList with all threads that should be included in a
+ // profile, both for threads that are still registered, and for threads that
+ // have been unregistered but still have data in the buffer.
+ // The returned array is sorted by thread register time.
+ // Do not hold on to the return value past LockedRegistry.
+ static ProfiledThreadList ProfiledThreads(
+ ThreadRegistry::LockedRegistry& aLockedRegistry, PSLockRef aLock) {
+ MOZ_ASSERT(sInstance);
+ ProfiledThreadList array;
+ MOZ_RELEASE_ASSERT(
+ array.initCapacity(sInstance->mLiveProfiledThreads.length() +
+ sInstance->mDeadProfiledThreads.length()));
+
+ for (ThreadRegistry::OffThreadRef offThreadRef : aLockedRegistry) {
+ ProfiledThreadData* profiledThreadData =
+ offThreadRef.UnlockedRWForLockedProfilerRef().GetProfiledThreadData(
+ aLock);
+ if (!profiledThreadData) {
+ // This thread was not profiled, continue with the next one.
+ continue;
+ }
+ ThreadRegistry::OffThreadRef::RWFromAnyThreadWithLock lockedThreadData =
+ offThreadRef.GetLockedRWFromAnyThread();
+ MOZ_RELEASE_ASSERT(array.append(ProfiledThreadListElement{
+ profiledThreadData->Info().RegisterTime(),
+ lockedThreadData->GetJSContext(), profiledThreadData}));
+ }
+
+ for (auto& t : sInstance->mDeadProfiledThreads) {
+ MOZ_RELEASE_ASSERT(array.append(ProfiledThreadListElement{
+ t->Info().RegisterTime(), (JSContext*)nullptr, t.get()}));
+ }
+
+ std::sort(array.begin(), array.end(),
+ [](const ProfiledThreadListElement& a,
+ const ProfiledThreadListElement& b) {
+ return a.mRegisterTime < b.mRegisterTime;
+ });
+ return array;
+ }
+
+ static Vector<RefPtr<PageInformation>> ProfiledPages(PSLockRef aLock) {
+ MOZ_ASSERT(sInstance);
+ Vector<RefPtr<PageInformation>> array;
+ for (auto& d : CorePS::RegisteredPages(aLock)) {
+ MOZ_RELEASE_ASSERT(array.append(d));
+ }
+ for (auto& d : sInstance->mDeadProfiledPages) {
+ MOZ_RELEASE_ASSERT(array.append(d));
+ }
+ // We don't need to sort the pages like threads since we won't show them
+ // as a list.
+ return array;
+ }
+
+ static ProfiledThreadData* AddLiveProfiledThread(
+ PSLockRef, UniquePtr<ProfiledThreadData>&& aProfiledThreadData) {
+ MOZ_ASSERT(sInstance);
+ MOZ_RELEASE_ASSERT(sInstance->mLiveProfiledThreads.append(
+ LiveProfiledThreadData{std::move(aProfiledThreadData)}));
+
+ // Return a weak pointer to the ProfiledThreadData object.
+ return sInstance->mLiveProfiledThreads.back().mProfiledThreadData.get();
+ }
+
+ static void UnregisterThread(PSLockRef aLockRef,
+ ProfiledThreadData* aProfiledThreadData) {
+ MOZ_ASSERT(sInstance);
+
+ DiscardExpiredDeadProfiledThreads(aLockRef);
+
+ // Find the right entry in the mLiveProfiledThreads array and remove the
+ // element, moving the ProfiledThreadData object for the thread into the
+ // mDeadProfiledThreads array.
+ for (size_t i = 0; i < sInstance->mLiveProfiledThreads.length(); i++) {
+ LiveProfiledThreadData& thread = sInstance->mLiveProfiledThreads[i];
+ if (thread.mProfiledThreadData == aProfiledThreadData) {
+ thread.mProfiledThreadData->NotifyUnregistered(
+ sInstance->mProfileBuffer.BufferRangeEnd());
+ MOZ_RELEASE_ASSERT(sInstance->mDeadProfiledThreads.append(
+ std::move(thread.mProfiledThreadData)));
+ sInstance->mLiveProfiledThreads.erase(
+ &sInstance->mLiveProfiledThreads[i]);
+ return;
+ }
+ }
+ }
+
+ // This is a counter to collect process CPU utilization during profiling.
+ // It cannot be a raw `ProfilerCounter` because we need to manually add/remove
+ // it while the profiler lock is already held.
+ class ProcessCPUCounter final : public BaseProfilerCount {
+ public:
+ explicit ProcessCPUCounter(PSLockRef aLock)
+ : BaseProfilerCount("processCPU", &mCounter, nullptr, "CPU",
+ "Process CPU utilization") {
+ // Adding on construction, so it's ready before the sampler starts.
+ locked_profiler_add_sampled_counter(aLock, this);
+ // Note: Removed from ActivePS::Destroy, because a lock is needed.
+ }
+
+ void Add(int64_t aNumber) { mCounter += aNumber; }
+
+ private:
+ ProfilerAtomicSigned mCounter;
+ };
+ PS_GET(ProcessCPUCounter*, MaybeProcessCPUCounter);
+
+ PS_GET(PowerCounters*, MaybePowerCounters);
+
+ PS_GET_AND_SET(bool, IsPaused)
+
+ // True if sampling is paused (though generic `SetIsPaused()` or specific
+ // `SetIsSamplingPaused()`).
+ static bool IsSamplingPaused(PSLockRef lock) {
+ MOZ_ASSERT(sInstance);
+ return IsPaused(lock) || sInstance->mIsSamplingPaused;
+ }
+
+ static void SetIsSamplingPaused(PSLockRef, bool aIsSamplingPaused) {
+ MOZ_ASSERT(sInstance);
+ sInstance->mIsSamplingPaused = aIsSamplingPaused;
+ }
+
+ static void DiscardExpiredDeadProfiledThreads(PSLockRef) {
+ MOZ_ASSERT(sInstance);
+ uint64_t bufferRangeStart = sInstance->mProfileBuffer.BufferRangeStart();
+ // Discard any dead threads that were unregistered before bufferRangeStart.
+ sInstance->mDeadProfiledThreads.eraseIf(
+ [bufferRangeStart](
+ const UniquePtr<ProfiledThreadData>& aProfiledThreadData) {
+ Maybe<uint64_t> bufferPosition =
+ aProfiledThreadData->BufferPositionWhenUnregistered();
+ MOZ_RELEASE_ASSERT(bufferPosition,
+ "should have unregistered this thread");
+ return *bufferPosition < bufferRangeStart;
+ });
+ }
+
+ static void UnregisterPage(PSLockRef aLock,
+ uint64_t aRegisteredInnerWindowID) {
+ MOZ_ASSERT(sInstance);
+ auto& registeredPages = CorePS::RegisteredPages(aLock);
+ for (size_t i = 0; i < registeredPages.length(); i++) {
+ RefPtr<PageInformation>& page = registeredPages[i];
+ if (page->InnerWindowID() == aRegisteredInnerWindowID) {
+ page->NotifyUnregistered(sInstance->mProfileBuffer.BufferRangeEnd());
+ MOZ_RELEASE_ASSERT(
+ sInstance->mDeadProfiledPages.append(std::move(page)));
+ registeredPages.erase(&registeredPages[i--]);
+ }
+ }
+ }
+
+ static void DiscardExpiredPages(PSLockRef) {
+ MOZ_ASSERT(sInstance);
+ uint64_t bufferRangeStart = sInstance->mProfileBuffer.BufferRangeStart();
+ // Discard any dead pages that were unregistered before
+ // bufferRangeStart.
+ sInstance->mDeadProfiledPages.eraseIf(
+ [bufferRangeStart](const RefPtr<PageInformation>& aProfiledPage) {
+ Maybe<uint64_t> bufferPosition =
+ aProfiledPage->BufferPositionWhenUnregistered();
+ MOZ_RELEASE_ASSERT(bufferPosition,
+ "should have unregistered this page");
+ return *bufferPosition < bufferRangeStart;
+ });
+ }
+
+ static void ClearUnregisteredPages(PSLockRef) {
+ MOZ_ASSERT(sInstance);
+ sInstance->mDeadProfiledPages.clear();
+ }
+
+ static void ClearExpiredExitProfiles(PSLockRef) {
+ MOZ_ASSERT(sInstance);
+ uint64_t bufferRangeStart = sInstance->mProfileBuffer.BufferRangeStart();
+ // Discard exit profiles that were gathered before our buffer RangeStart.
+ // If we have started to overwrite our data from when the Base profile was
+ // added, we should get rid of that Base profile because it's now older than
+ // our oldest Gecko profile data.
+ //
+ // When adding: (In practice the starting buffer should be empty)
+ // v Start == End
+ // | <-- Buffer range, initially empty.
+ // ^ mGeckoIndexWhenBaseProfileAdded < Start FALSE -> keep it
+ //
+ // Later, still in range:
+ // v Start v End
+ // |=========| <-- Buffer range growing.
+ // ^ mGeckoIndexWhenBaseProfileAdded < Start FALSE -> keep it
+ //
+ // Even later, now out of range:
+ // v Start v End
+ // |============| <-- Buffer range full and sliding.
+ // ^ mGeckoIndexWhenBaseProfileAdded < Start TRUE! -> Discard it
+ if (sInstance->mBaseProfileThreads &&
+ sInstance->mGeckoIndexWhenBaseProfileAdded
+ .ConvertToProfileBufferIndex() <
+ profiler_get_core_buffer().GetState().mRangeStart) {
+ DEBUG_LOG("ClearExpiredExitProfiles() - Discarding base profile %p",
+ sInstance->mBaseProfileThreads.get());
+ sInstance->mBaseProfileThreads.reset();
+ }
+ sInstance->mExitProfiles.eraseIf(
+ [bufferRangeStart](const ExitProfile& aExitProfile) {
+ return aExitProfile.mBufferPositionAtGatherTime < bufferRangeStart;
+ });
+ }
+
+ static void AddBaseProfileThreads(PSLockRef aLock,
+ UniquePtr<char[]> aBaseProfileThreads) {
+ MOZ_ASSERT(sInstance);
+ DEBUG_LOG("AddBaseProfileThreads(%p)", aBaseProfileThreads.get());
+ sInstance->mBaseProfileThreads = std::move(aBaseProfileThreads);
+ sInstance->mGeckoIndexWhenBaseProfileAdded =
+ ProfileBufferBlockIndex::CreateFromProfileBufferIndex(
+ profiler_get_core_buffer().GetState().mRangeEnd);
+ }
+
+ static UniquePtr<char[]> MoveBaseProfileThreads(PSLockRef aLock) {
+ MOZ_ASSERT(sInstance);
+
+ ClearExpiredExitProfiles(aLock);
+
+ DEBUG_LOG("MoveBaseProfileThreads() - Consuming base profile %p",
+ sInstance->mBaseProfileThreads.get());
+ return std::move(sInstance->mBaseProfileThreads);
+ }
+
+ static void AddExitProfile(PSLockRef aLock, const nsACString& aExitProfile) {
+ MOZ_ASSERT(sInstance);
+
+ ClearExpiredExitProfiles(aLock);
+
+ MOZ_RELEASE_ASSERT(sInstance->mExitProfiles.append(ExitProfile{
+ nsCString(aExitProfile), sInstance->mProfileBuffer.BufferRangeEnd()}));
+ }
+
+ static Vector<nsCString> MoveExitProfiles(PSLockRef aLock) {
+ MOZ_ASSERT(sInstance);
+
+ ClearExpiredExitProfiles(aLock);
+
+ Vector<nsCString> profiles;
+ MOZ_RELEASE_ASSERT(
+ profiles.initCapacity(sInstance->mExitProfiles.length()));
+ for (auto& profile : sInstance->mExitProfiles) {
+ MOZ_RELEASE_ASSERT(profiles.append(std::move(profile.mJSON)));
+ }
+ sInstance->mExitProfiles.clear();
+ return profiles;
+ }
+
+#if defined(MOZ_REPLACE_MALLOC) && defined(MOZ_PROFILER_MEMORY)
+ static void SetMemoryCounter(const BaseProfilerCount* aMemoryCounter) {
+ MOZ_ASSERT(sInstance);
+
+ sInstance->mMemoryCounter = aMemoryCounter;
+ }
+
+ static bool IsMemoryCounter(const BaseProfilerCount* aMemoryCounter) {
+ MOZ_ASSERT(sInstance);
+
+ return sInstance->mMemoryCounter == aMemoryCounter;
+ }
+#endif
+
+ private:
+ // The singleton instance.
+ static ActivePS* sInstance;
+
+ const TimeStamp mProfilingStartTime;
+
+ // We need to track activity generations. If we didn't we could have the
+ // following scenario.
+ //
+ // - profiler_stop() locks gPSMutex, de-instantiates ActivePS, unlocks
+ // gPSMutex, deletes the SamplerThread (which does a join).
+ //
+ // - profiler_start() runs on a different thread, locks gPSMutex,
+ // re-instantiates ActivePS, unlocks gPSMutex -- all before the join
+ // completes.
+ //
+ // - SamplerThread::Run() locks gPSMutex, sees that ActivePS is instantiated,
+ // and continues as if the start/stop pair didn't occur. Also
+ // profiler_stop() is stuck, unable to finish.
+ //
+ // By checking ActivePS *and* the generation, we can avoid this scenario.
+ // sNextGeneration is used to track the next generation number; it is static
+ // because it must persist across different ActivePS instantiations.
+ const uint32_t mGeneration;
+ static uint32_t sNextGeneration;
+
+ // The maximum number of entries in mProfileBuffer.
+ const PowerOfTwo32 mCapacity;
+
+ // The maximum duration of entries in mProfileBuffer, in seconds.
+ const Maybe<double> mDuration;
+
+ // The interval between samples, measured in milliseconds.
+ const double mInterval;
+
+ // The profile features that are enabled.
+ const uint32_t mFeatures;
+
+ // Substrings of names of threads we want to profile.
+ Vector<std::string> mFilters;
+ Vector<std::string> mFiltersLowered;
+
+ // ID of the active browser screen's active tab.
+ // It's being used to determine the profiled tab. It's "0" if we failed to
+ // get the ID.
+ const uint64_t mActiveTabID;
+
+ // The chunk manager used by `mProfileBuffer` below.
+ // May become null if it gets transferred ouf of the Gecko Profiler.
+ UniquePtr<ProfileBufferChunkManagerWithLocalLimit> mProfileBufferChunkManager;
+
+ // The buffer into which all samples are recorded.
+ ProfileBuffer mProfileBuffer;
+
+ // ProfiledThreadData objects for any threads that were profiled at any point
+ // during this run of the profiler:
+ // - mLiveProfiledThreads contains all threads that are still registered, and
+ // - mDeadProfiledThreads contains all threads that have already been
+ // unregistered but for which there is still data in the profile buffer.
+ Vector<LiveProfiledThreadData> mLiveProfiledThreads;
+ Vector<UniquePtr<ProfiledThreadData>> mDeadProfiledThreads;
+
+ // Info on all the dead pages.
+ // Registered pages are being moved to this array after unregistration.
+ // We are keeping them in case we need them in the profile data.
+ // We are removing them when we ensure that we won't need them anymore.
+ Vector<RefPtr<PageInformation>> mDeadProfiledPages;
+
+ // Used to collect process CPU utilization values, if the feature is on.
+ ProcessCPUCounter* mMaybeProcessCPUCounter;
+
+ // Used to collect power use data, if the power feature is on.
+ PowerCounters* mMaybePowerCounters;
+
+ // The current sampler thread. This class is not responsible for destroying
+ // the SamplerThread object; the Destroy() method returns it so the caller
+ // can destroy it.
+ SamplerThread* const mSamplerThread;
+
+ // Is the profiler fully paused?
+ bool mIsPaused;
+
+ // Is the profiler periodic sampling paused?
+ bool mIsSamplingPaused;
+
+ // Optional startup profile thread array from BaseProfiler.
+ UniquePtr<char[]> mBaseProfileThreads;
+ ProfileBufferBlockIndex mGeckoIndexWhenBaseProfileAdded;
+
+ struct ExitProfile {
+ nsCString mJSON;
+ uint64_t mBufferPositionAtGatherTime;
+ };
+ Vector<ExitProfile> mExitProfiles;
+
+#if defined(MOZ_REPLACE_MALLOC) && defined(MOZ_PROFILER_MEMORY)
+ Atomic<const BaseProfilerCount*> mMemoryCounter;
+#endif
+};
+
+ActivePS* ActivePS::sInstance = nullptr;
+uint32_t ActivePS::sNextGeneration = 0;
+
+#undef PS_GET
+#undef PS_GET_LOCKLESS
+#undef PS_GET_AND_SET
+
+using ProfilerStateChangeMutex =
+ mozilla::baseprofiler::detail::BaseProfilerMutex;
+using ProfilerStateChangeLock =
+ mozilla::baseprofiler::detail::BaseProfilerAutoLock;
+static ProfilerStateChangeMutex gProfilerStateChangeMutex;
+
+struct IdentifiedProfilingStateChangeCallback {
+ ProfilingStateSet mProfilingStateSet;
+ ProfilingStateChangeCallback mProfilingStateChangeCallback;
+ uintptr_t mUniqueIdentifier;
+
+ explicit IdentifiedProfilingStateChangeCallback(
+ ProfilingStateSet aProfilingStateSet,
+ ProfilingStateChangeCallback&& aProfilingStateChangeCallback,
+ uintptr_t aUniqueIdentifier)
+ : mProfilingStateSet(aProfilingStateSet),
+ mProfilingStateChangeCallback(aProfilingStateChangeCallback),
+ mUniqueIdentifier(aUniqueIdentifier) {}
+};
+using IdentifiedProfilingStateChangeCallbackUPtr =
+ UniquePtr<IdentifiedProfilingStateChangeCallback>;
+
+static Vector<IdentifiedProfilingStateChangeCallbackUPtr>
+ mIdentifiedProfilingStateChangeCallbacks;
+
+void profiler_add_state_change_callback(
+ ProfilingStateSet aProfilingStateSet,
+ ProfilingStateChangeCallback&& aCallback,
+ uintptr_t aUniqueIdentifier /* = 0 */) {
+ MOZ_ASSERT(!PSAutoLock::IsLockedOnCurrentThread());
+ ProfilerStateChangeLock lock(gProfilerStateChangeMutex);
+
+#ifdef DEBUG
+ // Check if a non-zero id is not already used. Bug forgive it in non-DEBUG
+ // builds; in the worst case they may get removed too early.
+ if (aUniqueIdentifier != 0) {
+ for (const IdentifiedProfilingStateChangeCallbackUPtr& idedCallback :
+ mIdentifiedProfilingStateChangeCallbacks) {
+ MOZ_ASSERT(idedCallback->mUniqueIdentifier != aUniqueIdentifier);
+ }
+ }
+#endif // DEBUG
+
+ if (aProfilingStateSet.contains(ProfilingState::AlreadyActive) &&
+ profiler_is_active()) {
+ aCallback(ProfilingState::AlreadyActive);
+ }
+
+ (void)mIdentifiedProfilingStateChangeCallbacks.append(
+ MakeUnique<IdentifiedProfilingStateChangeCallback>(
+ aProfilingStateSet, std::move(aCallback), aUniqueIdentifier));
+}
+
+// Remove the callback with the given identifier.
+void profiler_remove_state_change_callback(uintptr_t aUniqueIdentifier) {
+ MOZ_ASSERT(aUniqueIdentifier != 0);
+ if (aUniqueIdentifier == 0) {
+ // Forgive zero in non-DEBUG builds.
+ return;
+ }
+
+ MOZ_ASSERT(!PSAutoLock::IsLockedOnCurrentThread());
+ ProfilerStateChangeLock lock(gProfilerStateChangeMutex);
+
+ mIdentifiedProfilingStateChangeCallbacks.eraseIf(
+ [aUniqueIdentifier](
+ const IdentifiedProfilingStateChangeCallbackUPtr& aIdedCallback) {
+ if (aIdedCallback->mUniqueIdentifier != aUniqueIdentifier) {
+ return false;
+ }
+ if (aIdedCallback->mProfilingStateSet.contains(
+ ProfilingState::RemovingCallback)) {
+ aIdedCallback->mProfilingStateChangeCallback(
+ ProfilingState::RemovingCallback);
+ }
+ return true;
+ });
+}
+
+static void invoke_profiler_state_change_callbacks(
+ ProfilingState aProfilingState) {
+ MOZ_ASSERT(!PSAutoLock::IsLockedOnCurrentThread());
+ ProfilerStateChangeLock lock(gProfilerStateChangeMutex);
+
+ for (const IdentifiedProfilingStateChangeCallbackUPtr& idedCallback :
+ mIdentifiedProfilingStateChangeCallbacks) {
+ if (idedCallback->mProfilingStateSet.contains(aProfilingState)) {
+ idedCallback->mProfilingStateChangeCallback(aProfilingState);
+ }
+ }
+}
+
+Atomic<uint32_t, MemoryOrdering::Relaxed> RacyFeatures::sActiveAndFeatures(0);
+
+// The name of the main thread.
+static const char* const kMainThreadName = "GeckoMain";
+
+////////////////////////////////////////////////////////////////////////
+// BEGIN sampling/unwinding code
+
+// The registers used for stack unwinding and a few other sampling purposes.
+// The ctor does nothing; users are responsible for filling in the fields.
+class Registers {
+ public:
+ Registers() : mPC{nullptr}, mSP{nullptr}, mFP{nullptr}, mLR{nullptr} {}
+
+ void Clear() { memset(this, 0, sizeof(*this)); }
+
+ // These fields are filled in by
+ // Sampler::SuspendAndSampleAndResumeThread() for periodic and backtrace
+ // samples, and by REGISTERS_SYNC_POPULATE for synchronous samples.
+ Address mPC; // Instruction pointer.
+ Address mSP; // Stack pointer.
+ Address mFP; // Frame pointer.
+ Address mLR; // ARM link register.
+#if defined(GP_OS_linux) || defined(GP_OS_android) || defined(GP_OS_freebsd)
+ // This contains all the registers, which means it duplicates the four fields
+ // above. This is ok.
+ ucontext_t* mContext; // The context from the signal handler or below.
+ ucontext_t mContextSyncStorage; // Storage for sync stack unwinding.
+#endif
+};
+
+// Setting MAX_NATIVE_FRAMES too high risks the unwinder wasting a lot of time
+// looping on corrupted stacks.
+static const size_t MAX_NATIVE_FRAMES = 1024;
+
+struct NativeStack {
+ void* mPCs[MAX_NATIVE_FRAMES];
+ void* mSPs[MAX_NATIVE_FRAMES];
+ size_t mCount; // Number of frames filled.
+
+ NativeStack() : mPCs(), mSPs(), mCount(0) {}
+};
+
+Atomic<bool> WALKING_JS_STACK(false);
+
+struct AutoWalkJSStack {
+ bool walkAllowed;
+
+ AutoWalkJSStack() : walkAllowed(false) {
+ walkAllowed = WALKING_JS_STACK.compareExchange(false, true);
+ }
+
+ ~AutoWalkJSStack() {
+ if (walkAllowed) {
+ WALKING_JS_STACK = false;
+ }
+ }
+};
+
+class StackWalkControl {
+ public:
+ struct ResumePoint {
+ // If lost, the stack walker should resume at these values.
+ void* resumeSp; // If null, stop the walker here, don't resume again.
+ void* resumeBp;
+ void* resumePc;
+ };
+
+#if ((defined(USE_MOZ_STACK_WALK) || defined(USE_FRAME_POINTER_STACK_WALK)) && \
+ defined(GP_ARCH_amd64))
+ public:
+ static constexpr bool scIsSupported = true;
+
+ void Clear() { mResumePointCount = 0; }
+
+ size_t ResumePointCount() const { return mResumePointCount; }
+
+ static constexpr size_t MaxResumePointCount() {
+ return scMaxResumePointCount;
+ }
+
+ // Add a resume point. Note that adding anything past MaxResumePointCount()
+ // would silently fail. In practice this means that stack walking may still
+ // lose native frames.
+ void AddResumePoint(ResumePoint&& aResumePoint) {
+ // If SP is null, we expect BP and PC to also be null.
+ MOZ_ASSERT_IF(!aResumePoint.resumeSp, !aResumePoint.resumeBp);
+ MOZ_ASSERT_IF(!aResumePoint.resumeSp, !aResumePoint.resumePc);
+
+ // If BP and/or PC are not null, SP must not be null. (But we allow BP/PC to
+ // be null even if SP is not null.)
+ MOZ_ASSERT_IF(aResumePoint.resumeBp, aResumePoint.resumeSp);
+ MOZ_ASSERT_IF(aResumePoint.resumePc, aResumePoint.resumeSp);
+
+ if (mResumePointCount < scMaxResumePointCount) {
+ mResumePoint[mResumePointCount] = std::move(aResumePoint);
+ ++mResumePointCount;
+ }
+ }
+
+ // Only allow non-modifying range-for loops.
+ const ResumePoint* begin() const { return &mResumePoint[0]; }
+ const ResumePoint* end() const { return &mResumePoint[mResumePointCount]; }
+
+ // Find the next resume point that would be a caller of the function with the
+ // given SP; i.e., the resume point with the closest resumeSp > aSp.
+ const ResumePoint* GetResumePointCallingSp(void* aSp) const {
+ const ResumePoint* callingResumePoint = nullptr;
+ for (const ResumePoint& resumePoint : *this) {
+ if (resumePoint.resumeSp && // This is a potential resume point.
+ resumePoint.resumeSp > aSp && // It is a caller of the given SP.
+ (!callingResumePoint || // This is the first candidate.
+ resumePoint.resumeSp < callingResumePoint->resumeSp) // Or better.
+ ) {
+ callingResumePoint = &resumePoint;
+ }
+ }
+ return callingResumePoint;
+ }
+
+ private:
+ size_t mResumePointCount = 0;
+ static constexpr size_t scMaxResumePointCount = 32;
+ ResumePoint mResumePoint[scMaxResumePointCount];
+
+#else
+ public:
+ static constexpr bool scIsSupported = false;
+ // Discarded constexpr-if statements are still checked during compilation,
+ // these declarations are necessary for that, even if not actually used.
+ void Clear();
+ size_t ResumePointCount();
+ static constexpr size_t MaxResumePointCount();
+ void AddResumePoint(ResumePoint&& aResumePoint);
+ const ResumePoint* begin() const;
+ const ResumePoint* end() const;
+ const ResumePoint* GetResumePointCallingSp(void* aSp) const;
+#endif
+};
+
+// Make a copy of the JS stack into a JSFrame array, and return the number of
+// copied frames.
+// This copy is necessary since, like the native stack, the JS stack is iterated
+// youngest-to-oldest and we need to iterate oldest-to-youngest in MergeStacks.
+static uint32_t ExtractJsFrames(
+ bool aIsSynchronous,
+ const ThreadRegistration::UnlockedReaderAndAtomicRWOnThread& aThreadData,
+ const Registers& aRegs, ProfilerStackCollector& aCollector,
+ JsFrameBuffer aJsFrames, StackWalkControl* aStackWalkControlIfSupported) {
+ MOZ_ASSERT(aJsFrames,
+ "ExtractJsFrames should only be called if there is a "
+ "JsFrameBuffer to fill.");
+
+ uint32_t jsFramesCount = 0;
+
+ // Only walk jit stack if profiling frame iterator is turned on.
+ JSContext* context = aThreadData.GetJSContext();
+ if (context && JS::IsProfilingEnabledForContext(context)) {
+ AutoWalkJSStack autoWalkJSStack;
+
+ if (autoWalkJSStack.walkAllowed) {
+ JS::ProfilingFrameIterator::RegisterState registerState;
+ registerState.pc = aRegs.mPC;
+ registerState.sp = aRegs.mSP;
+ registerState.lr = aRegs.mLR;
+ registerState.fp = aRegs.mFP;
+
+ // Non-periodic sampling passes Nothing() as the buffer write position to
+ // ProfilingFrameIterator to avoid incorrectly resetting the buffer
+ // position of sampled JIT frames inside the JS engine.
+ Maybe<uint64_t> samplePosInBuffer;
+ if (!aIsSynchronous) {
+ // aCollector.SamplePositionInBuffer() will return Nothing() when
+ // profiler_suspend_and_sample_thread is called from the background hang
+ // reporter.
+ samplePosInBuffer = aCollector.SamplePositionInBuffer();
+ }
+
+ for (JS::ProfilingFrameIterator jsIter(context, registerState,
+ samplePosInBuffer);
+ !jsIter.done(); ++jsIter) {
+ if (aIsSynchronous || jsIter.isWasm()) {
+ jsFramesCount +=
+ jsIter.extractStack(aJsFrames, jsFramesCount, MAX_JS_FRAMES);
+ if (jsFramesCount == MAX_JS_FRAMES) {
+ break;
+ }
+ } else {
+ Maybe<JS::ProfilingFrameIterator::Frame> frame =
+ jsIter.getPhysicalFrameWithoutLabel();
+ if (frame.isSome()) {
+ aJsFrames[jsFramesCount++] = std::move(frame).ref();
+ if (jsFramesCount == MAX_JS_FRAMES) {
+ break;
+ }
+ }
+ }
+
+ if constexpr (StackWalkControl::scIsSupported) {
+ if (aStackWalkControlIfSupported) {
+ jsIter.getCppEntryRegisters().apply(
+ [&](const JS::ProfilingFrameIterator::RegisterState&
+ aCppEntry) {
+ StackWalkControl::ResumePoint resumePoint;
+ resumePoint.resumeSp = aCppEntry.sp;
+ resumePoint.resumeBp = aCppEntry.fp;
+ resumePoint.resumePc = aCppEntry.pc;
+ aStackWalkControlIfSupported->AddResumePoint(
+ std::move(resumePoint));
+ });
+ }
+ } else {
+ MOZ_ASSERT(!aStackWalkControlIfSupported,
+ "aStackWalkControlIfSupported should be null when "
+ "!StackWalkControl::scIsSupported");
+ (void)aStackWalkControlIfSupported;
+ }
+ }
+ }
+ }
+
+ return jsFramesCount;
+}
+
+// Merges the profiling stack, native stack, and JS stack, outputting the
+// details to aCollector.
+static void MergeStacks(
+ uint32_t aFeatures, bool aIsSynchronous,
+ const ThreadRegistration::UnlockedReaderAndAtomicRWOnThread& aThreadData,
+ const Registers& aRegs, const NativeStack& aNativeStack,
+ ProfilerStackCollector& aCollector, JsFrame* aJsFrames,
+ uint32_t aJsFramesCount) {
+ // WARNING: this function runs within the profiler's "critical section".
+ // WARNING: this function might be called while the profiler is inactive, and
+ // cannot rely on ActivePS.
+
+ MOZ_ASSERT_IF(!aJsFrames, aJsFramesCount == 0);
+
+ const ProfilingStack& profilingStack = aThreadData.ProfilingStackCRef();
+ const js::ProfilingStackFrame* profilingStackFrames = profilingStack.frames;
+ uint32_t profilingStackFrameCount = profilingStack.stackSize();
+
+ // While the profiling stack array is ordered oldest-to-youngest, the JS and
+ // native arrays are ordered youngest-to-oldest. We must add frames to aInfo
+ // oldest-to-youngest. Thus, iterate over the profiling stack forwards and JS
+ // and native arrays backwards. Note: this means the terminating condition
+ // jsIndex and nativeIndex is being < 0.
+ uint32_t profilingStackIndex = 0;
+ int32_t jsIndex = aJsFramesCount - 1;
+ int32_t nativeIndex = aNativeStack.mCount - 1;
+
+ uint8_t* lastLabelFrameStackAddr = nullptr;
+ uint8_t* jitEndStackAddr = nullptr;
+
+ // Iterate as long as there is at least one frame remaining.
+ while (profilingStackIndex != profilingStackFrameCount || jsIndex >= 0 ||
+ nativeIndex >= 0) {
+ // There are 1 to 3 frames available. Find and add the oldest.
+ uint8_t* profilingStackAddr = nullptr;
+ uint8_t* jsStackAddr = nullptr;
+ uint8_t* nativeStackAddr = nullptr;
+ uint8_t* jsActivationAddr = nullptr;
+
+ if (profilingStackIndex != profilingStackFrameCount) {
+ const js::ProfilingStackFrame& profilingStackFrame =
+ profilingStackFrames[profilingStackIndex];
+
+ if (profilingStackFrame.isLabelFrame() ||
+ profilingStackFrame.isSpMarkerFrame()) {
+ lastLabelFrameStackAddr = (uint8_t*)profilingStackFrame.stackAddress();
+ }
+
+ // Skip any JS_OSR frames. Such frames are used when the JS interpreter
+ // enters a jit frame on a loop edge (via on-stack-replacement, or OSR).
+ // To avoid both the profiling stack frame and jit frame being recorded
+ // (and showing up twice), the interpreter marks the interpreter
+ // profiling stack frame as JS_OSR to ensure that it doesn't get counted.
+ if (profilingStackFrame.isOSRFrame()) {
+ profilingStackIndex++;
+ continue;
+ }
+
+ MOZ_ASSERT(lastLabelFrameStackAddr);
+ profilingStackAddr = lastLabelFrameStackAddr;
+ }
+
+ if (jsIndex >= 0) {
+ jsStackAddr = (uint8_t*)aJsFrames[jsIndex].stackAddress;
+ jsActivationAddr = (uint8_t*)aJsFrames[jsIndex].activation;
+ }
+
+ if (nativeIndex >= 0) {
+ nativeStackAddr = (uint8_t*)aNativeStack.mSPs[nativeIndex];
+ }
+
+ // If there's a native stack frame which has the same SP as a profiling
+ // stack frame, pretend we didn't see the native stack frame. Ditto for a
+ // native stack frame which has the same SP as a JS stack frame. In effect
+ // this means profiling stack frames or JS frames trump conflicting native
+ // frames.
+ if (nativeStackAddr && (profilingStackAddr == nativeStackAddr ||
+ jsStackAddr == nativeStackAddr)) {
+ nativeStackAddr = nullptr;
+ nativeIndex--;
+ MOZ_ASSERT(profilingStackAddr || jsStackAddr);
+ }
+
+ // Sanity checks.
+ MOZ_ASSERT_IF(profilingStackAddr,
+ profilingStackAddr != jsStackAddr &&
+ profilingStackAddr != nativeStackAddr);
+ MOZ_ASSERT_IF(jsStackAddr, jsStackAddr != profilingStackAddr &&
+ jsStackAddr != nativeStackAddr);
+ MOZ_ASSERT_IF(nativeStackAddr, nativeStackAddr != profilingStackAddr &&
+ nativeStackAddr != jsStackAddr);
+
+ // Check to see if profiling stack frame is top-most.
+ if (profilingStackAddr > jsStackAddr &&
+ profilingStackAddr > nativeStackAddr) {
+ MOZ_ASSERT(profilingStackIndex < profilingStackFrameCount);
+ const js::ProfilingStackFrame& profilingStackFrame =
+ profilingStackFrames[profilingStackIndex];
+
+ // Sp marker frames are just annotations and should not be recorded in
+ // the profile.
+ if (!profilingStackFrame.isSpMarkerFrame()) {
+ // The JIT only allows the top-most frame to have a nullptr pc.
+ MOZ_ASSERT_IF(
+ profilingStackFrame.isJsFrame() && profilingStackFrame.script() &&
+ !profilingStackFrame.pc(),
+ &profilingStackFrame ==
+ &profilingStack.frames[profilingStack.stackSize() - 1]);
+ if (aIsSynchronous && profilingStackFrame.categoryPair() ==
+ JS::ProfilingCategoryPair::PROFILER) {
+ // For stacks captured synchronously (ie. marker stacks), stop
+ // walking the stack as soon as we enter the profiler category,
+ // to avoid showing profiler internal code in marker stacks.
+ return;
+ }
+ aCollector.CollectProfilingStackFrame(profilingStackFrame);
+ }
+ profilingStackIndex++;
+ continue;
+ }
+
+ // Check to see if JS jit stack frame is top-most
+ if (jsStackAddr > nativeStackAddr) {
+ MOZ_ASSERT(jsIndex >= 0);
+ const JS::ProfilingFrameIterator::Frame& jsFrame = aJsFrames[jsIndex];
+ jitEndStackAddr = (uint8_t*)jsFrame.endStackAddress;
+ // Stringifying non-wasm JIT frames is delayed until streaming time. To
+ // re-lookup the entry in the JitcodeGlobalTable, we need to store the
+ // JIT code address (OptInfoAddr) in the circular buffer.
+ //
+ // Note that we cannot do this when we are sychronously sampling the
+ // current thread; that is, when called from profiler_get_backtrace. The
+ // captured backtrace is usually externally stored for an indeterminate
+ // amount of time, such as in nsRefreshDriver. Problematically, the
+ // stored backtrace may be alive across a GC during which the profiler
+ // itself is disabled. In that case, the JS engine is free to discard its
+ // JIT code. This means that if we inserted such OptInfoAddr entries into
+ // the buffer, nsRefreshDriver would now be holding on to a backtrace
+ // with stale JIT code return addresses.
+ if (aIsSynchronous ||
+ jsFrame.kind == JS::ProfilingFrameIterator::Frame_Wasm) {
+ aCollector.CollectWasmFrame(jsFrame.label);
+ } else if (jsFrame.kind ==
+ JS::ProfilingFrameIterator::Frame_BaselineInterpreter) {
+ // Materialize a ProfilingStackFrame similar to the C++ Interpreter. We
+ // also set the IS_BLINTERP_FRAME flag to differentiate though.
+ JSScript* script = jsFrame.interpreterScript;
+ jsbytecode* pc = jsFrame.interpreterPC();
+ js::ProfilingStackFrame stackFrame;
+ constexpr uint32_t ExtraFlags =
+ uint32_t(js::ProfilingStackFrame::Flags::IS_BLINTERP_FRAME);
+ stackFrame.initJsFrame<JS::ProfilingCategoryPair::JS_BaselineInterpret,
+ ExtraFlags>("", jsFrame.label, script, pc,
+ jsFrame.realmID);
+ aCollector.CollectProfilingStackFrame(stackFrame);
+ } else {
+ MOZ_ASSERT(jsFrame.kind == JS::ProfilingFrameIterator::Frame_Ion ||
+ jsFrame.kind == JS::ProfilingFrameIterator::Frame_Baseline);
+ aCollector.CollectJitReturnAddr(jsFrame.returnAddress());
+ }
+
+ jsIndex--;
+ continue;
+ }
+
+ // If we reach here, there must be a native stack frame and it must be the
+ // greatest frame.
+ if (nativeStackAddr &&
+ // If the latest JS frame was JIT, this could be the native frame that
+ // corresponds to it. In that case, skip the native frame, because
+ // there's no need for the same frame to be present twice in the stack.
+ // The JS frame can be considered the symbolicated version of the native
+ // frame.
+ (!jitEndStackAddr || nativeStackAddr < jitEndStackAddr) &&
+ // This might still be a JIT operation, check to make sure that is not
+ // in range of the NEXT JavaScript's stacks' activation address.
+ (!jsActivationAddr || nativeStackAddr > jsActivationAddr)) {
+ MOZ_ASSERT(nativeIndex >= 0);
+ void* addr = (void*)aNativeStack.mPCs[nativeIndex];
+ aCollector.CollectNativeLeafAddr(addr);
+ }
+ if (nativeIndex >= 0) {
+ nativeIndex--;
+ }
+ }
+
+ // Update the JS context with the current profile sample buffer generation.
+ //
+ // Only do this for periodic samples. We don't want to do this for
+ // synchronous samples, and we also don't want to do it for calls to
+ // profiler_suspend_and_sample_thread() from the background hang reporter -
+ // in that case, aCollector.BufferRangeStart() will return Nothing().
+ if (!aIsSynchronous) {
+ aCollector.BufferRangeStart().apply(
+ [&aThreadData](uint64_t aBufferRangeStart) {
+ JSContext* context = aThreadData.GetJSContext();
+ if (context) {
+ JS::SetJSContextProfilerSampleBufferRangeStart(context,
+ aBufferRangeStart);
+ }
+ });
+ }
+}
+
+#if defined(USE_FRAME_POINTER_STACK_WALK) || defined(USE_MOZ_STACK_WALK)
+static void StackWalkCallback(uint32_t aFrameNumber, void* aPC, void* aSP,
+ void* aClosure) {
+ NativeStack* nativeStack = static_cast<NativeStack*>(aClosure);
+ MOZ_ASSERT(nativeStack->mCount < MAX_NATIVE_FRAMES);
+ nativeStack->mSPs[nativeStack->mCount] = aSP;
+ nativeStack->mPCs[nativeStack->mCount] = aPC;
+ nativeStack->mCount++;
+}
+#endif
+
+#if defined(USE_FRAME_POINTER_STACK_WALK)
+static void DoFramePointerBacktrace(
+ const ThreadRegistration::UnlockedReaderAndAtomicRWOnThread& aThreadData,
+ const Registers& aRegs, NativeStack& aNativeStack,
+ StackWalkControl* aStackWalkControlIfSupported) {
+ // WARNING: this function runs within the profiler's "critical section".
+ // WARNING: this function might be called while the profiler is inactive, and
+ // cannot rely on ActivePS.
+
+ // Make a local copy of the Registers, to allow modifications.
+ Registers regs = aRegs;
+
+ // Start with the current function. We use 0 as the frame number here because
+ // the FramePointerStackWalk() call below will use 1..N. This is a bit weird
+ // but it doesn't matter because StackWalkCallback() doesn't use the frame
+ // number argument.
+ StackWalkCallback(/* frameNum */ 0, regs.mPC, regs.mSP, &aNativeStack);
+
+ const void* const stackEnd = aThreadData.StackTop();
+
+ // This is to check forward-progress after using a resume point.
+ void* previousResumeSp = nullptr;
+
+ for (;;) {
+ if (!(regs.mSP && regs.mSP <= regs.mFP && regs.mFP <= stackEnd)) {
+ break;
+ }
+ FramePointerStackWalk(StackWalkCallback,
+ uint32_t(MAX_NATIVE_FRAMES - aNativeStack.mCount),
+ &aNativeStack, reinterpret_cast<void**>(regs.mFP),
+ const_cast<void*>(stackEnd));
+
+ if constexpr (!StackWalkControl::scIsSupported) {
+ break;
+ } else {
+ if (aNativeStack.mCount >= MAX_NATIVE_FRAMES) {
+ // No room to add more frames.
+ break;
+ }
+ if (!aStackWalkControlIfSupported ||
+ aStackWalkControlIfSupported->ResumePointCount() == 0) {
+ // No resume information.
+ break;
+ }
+ void* lastSP = aNativeStack.mSPs[aNativeStack.mCount - 1];
+ if (previousResumeSp &&
+ ((uintptr_t)lastSP <= (uintptr_t)previousResumeSp)) {
+ // No progress after the previous resume point.
+ break;
+ }
+ const StackWalkControl::ResumePoint* resumePoint =
+ aStackWalkControlIfSupported->GetResumePointCallingSp(lastSP);
+ if (!resumePoint) {
+ break;
+ }
+ void* sp = resumePoint->resumeSp;
+ if (!sp) {
+ // Null SP in a resume point means we stop here.
+ break;
+ }
+ void* pc = resumePoint->resumePc;
+ StackWalkCallback(/* frameNum */ aNativeStack.mCount, pc, sp,
+ &aNativeStack);
+ ++aNativeStack.mCount;
+ if (aNativeStack.mCount >= MAX_NATIVE_FRAMES) {
+ break;
+ }
+ // Prepare context to resume stack walking.
+ regs.mPC = (Address)pc;
+ regs.mSP = (Address)sp;
+ regs.mFP = (Address)resumePoint->resumeBp;
+
+ previousResumeSp = sp;
+ }
+ }
+}
+#endif
+
+#if defined(USE_MOZ_STACK_WALK)
+static void DoMozStackWalkBacktrace(
+ const ThreadRegistration::UnlockedReaderAndAtomicRWOnThread& aThreadData,
+ const Registers& aRegs, NativeStack& aNativeStack,
+ StackWalkControl* aStackWalkControlIfSupported) {
+ // WARNING: this function runs within the profiler's "critical section".
+ // WARNING: this function might be called while the profiler is inactive, and
+ // cannot rely on ActivePS.
+
+ // Start with the current function. We use 0 as the frame number here because
+ // the MozStackWalkThread() call below will use 1..N. This is a bit weird but
+ // it doesn't matter because StackWalkCallback() doesn't use the frame number
+ // argument.
+ StackWalkCallback(/* frameNum */ 0, aRegs.mPC, aRegs.mSP, &aNativeStack);
+
+ HANDLE thread = aThreadData.PlatformDataCRef().ProfiledThread();
+ MOZ_ASSERT(thread);
+
+ CONTEXT context_buf;
+ CONTEXT* context = nullptr;
+ if constexpr (StackWalkControl::scIsSupported) {
+ context = &context_buf;
+ memset(&context_buf, 0, sizeof(CONTEXT));
+ context_buf.ContextFlags = CONTEXT_FULL;
+# if defined(_M_AMD64)
+ context_buf.Rsp = (DWORD64)aRegs.mSP;
+ context_buf.Rbp = (DWORD64)aRegs.mFP;
+ context_buf.Rip = (DWORD64)aRegs.mPC;
+# else
+ static_assert(!StackWalkControl::scIsSupported,
+ "Mismatched support between StackWalkControl and "
+ "DoMozStackWalkBacktrace");
+# endif
+ } else {
+ context = nullptr;
+ }
+
+ // This is to check forward-progress after using a resume point.
+ void* previousResumeSp = nullptr;
+
+ for (;;) {
+ MozStackWalkThread(StackWalkCallback,
+ uint32_t(MAX_NATIVE_FRAMES - aNativeStack.mCount),
+ &aNativeStack, thread, context);
+
+ if constexpr (!StackWalkControl::scIsSupported) {
+ break;
+ } else {
+ if (aNativeStack.mCount >= MAX_NATIVE_FRAMES) {
+ // No room to add more frames.
+ break;
+ }
+ if (!aStackWalkControlIfSupported ||
+ aStackWalkControlIfSupported->ResumePointCount() == 0) {
+ // No resume information.
+ break;
+ }
+ void* lastSP = aNativeStack.mSPs[aNativeStack.mCount - 1];
+ if (previousResumeSp &&
+ ((uintptr_t)lastSP <= (uintptr_t)previousResumeSp)) {
+ // No progress after the previous resume point.
+ break;
+ }
+ const StackWalkControl::ResumePoint* resumePoint =
+ aStackWalkControlIfSupported->GetResumePointCallingSp(lastSP);
+ if (!resumePoint) {
+ break;
+ }
+ void* sp = resumePoint->resumeSp;
+ if (!sp) {
+ // Null SP in a resume point means we stop here.
+ break;
+ }
+ void* pc = resumePoint->resumePc;
+ StackWalkCallback(/* frameNum */ aNativeStack.mCount, pc, sp,
+ &aNativeStack);
+ ++aNativeStack.mCount;
+ if (aNativeStack.mCount >= MAX_NATIVE_FRAMES) {
+ break;
+ }
+ // Prepare context to resume stack walking.
+ memset(&context_buf, 0, sizeof(CONTEXT));
+ context_buf.ContextFlags = CONTEXT_FULL;
+# if defined(_M_AMD64)
+ context_buf.Rsp = (DWORD64)sp;
+ context_buf.Rbp = (DWORD64)resumePoint->resumeBp;
+ context_buf.Rip = (DWORD64)pc;
+# else
+ static_assert(!StackWalkControl::scIsSupported,
+ "Mismatched support between StackWalkControl and "
+ "DoMozStackWalkBacktrace");
+# endif
+ previousResumeSp = sp;
+ }
+ }
+}
+#endif
+
+#ifdef USE_EHABI_STACKWALK
+static void DoEHABIBacktrace(
+ const ThreadRegistration::UnlockedReaderAndAtomicRWOnThread& aThreadData,
+ const Registers& aRegs, NativeStack& aNativeStack,
+ StackWalkControl* aStackWalkControlIfSupported) {
+ // WARNING: this function runs within the profiler's "critical section".
+ // WARNING: this function might be called while the profiler is inactive, and
+ // cannot rely on ActivePS.
+
+ aNativeStack.mCount = EHABIStackWalk(
+ aRegs.mContext->uc_mcontext, const_cast<void*>(aThreadData.StackTop()),
+ aNativeStack.mSPs, aNativeStack.mPCs, MAX_NATIVE_FRAMES);
+ (void)aStackWalkControlIfSupported; // TODO: Implement.
+}
+#endif
+
+#ifdef USE_LUL_STACKWALK
+
+// See the comment at the callsite for why this function is necessary.
+# if defined(MOZ_HAVE_ASAN_IGNORE)
+MOZ_ASAN_IGNORE static void ASAN_memcpy(void* aDst, const void* aSrc,
+ size_t aLen) {
+ // The obvious thing to do here is call memcpy(). However, although
+ // ASAN_memcpy() is not instrumented by ASAN, memcpy() still is, and the
+ // false positive still manifests! So we must implement memcpy() ourselves
+ // within this function.
+ char* dst = static_cast<char*>(aDst);
+ const char* src = static_cast<const char*>(aSrc);
+
+ for (size_t i = 0; i < aLen; i++) {
+ dst[i] = src[i];
+ }
+}
+# endif
+
+static void DoLULBacktrace(
+ const ThreadRegistration::UnlockedReaderAndAtomicRWOnThread& aThreadData,
+ const Registers& aRegs, NativeStack& aNativeStack,
+ StackWalkControl* aStackWalkControlIfSupported) {
+ // WARNING: this function runs within the profiler's "critical section".
+ // WARNING: this function might be called while the profiler is inactive, and
+ // cannot rely on ActivePS.
+
+ (void)aStackWalkControlIfSupported; // TODO: Implement.
+
+ const mcontext_t* mc = &aRegs.mContext->uc_mcontext;
+
+ lul::UnwindRegs startRegs;
+ memset(&startRegs, 0, sizeof(startRegs));
+
+# if defined(GP_PLAT_amd64_linux) || defined(GP_PLAT_amd64_android)
+ startRegs.xip = lul::TaggedUWord(mc->gregs[REG_RIP]);
+ startRegs.xsp = lul::TaggedUWord(mc->gregs[REG_RSP]);
+ startRegs.xbp = lul::TaggedUWord(mc->gregs[REG_RBP]);
+# elif defined(GP_PLAT_amd64_freebsd)
+ startRegs.xip = lul::TaggedUWord(mc->mc_rip);
+ startRegs.xsp = lul::TaggedUWord(mc->mc_rsp);
+ startRegs.xbp = lul::TaggedUWord(mc->mc_rbp);
+# elif defined(GP_PLAT_arm_linux) || defined(GP_PLAT_arm_android)
+ startRegs.r15 = lul::TaggedUWord(mc->arm_pc);
+ startRegs.r14 = lul::TaggedUWord(mc->arm_lr);
+ startRegs.r13 = lul::TaggedUWord(mc->arm_sp);
+ startRegs.r12 = lul::TaggedUWord(mc->arm_ip);
+ startRegs.r11 = lul::TaggedUWord(mc->arm_fp);
+ startRegs.r7 = lul::TaggedUWord(mc->arm_r7);
+# elif defined(GP_PLAT_arm64_linux) || defined(GP_PLAT_arm64_android)
+ startRegs.pc = lul::TaggedUWord(mc->pc);
+ startRegs.x29 = lul::TaggedUWord(mc->regs[29]);
+ startRegs.x30 = lul::TaggedUWord(mc->regs[30]);
+ startRegs.sp = lul::TaggedUWord(mc->sp);
+# elif defined(GP_PLAT_arm64_freebsd)
+ startRegs.pc = lul::TaggedUWord(mc->mc_gpregs.gp_elr);
+ startRegs.x29 = lul::TaggedUWord(mc->mc_gpregs.gp_x[29]);
+ startRegs.x30 = lul::TaggedUWord(mc->mc_gpregs.gp_lr);
+ startRegs.sp = lul::TaggedUWord(mc->mc_gpregs.gp_sp);
+# elif defined(GP_PLAT_x86_linux) || defined(GP_PLAT_x86_android)
+ startRegs.xip = lul::TaggedUWord(mc->gregs[REG_EIP]);
+ startRegs.xsp = lul::TaggedUWord(mc->gregs[REG_ESP]);
+ startRegs.xbp = lul::TaggedUWord(mc->gregs[REG_EBP]);
+# elif defined(GP_PLAT_mips64_linux)
+ startRegs.pc = lul::TaggedUWord(mc->pc);
+ startRegs.sp = lul::TaggedUWord(mc->gregs[29]);
+ startRegs.fp = lul::TaggedUWord(mc->gregs[30]);
+# else
+# error "Unknown plat"
+# endif
+
+ // Copy up to N_STACK_BYTES from rsp-REDZONE upwards, but not going past the
+ // stack's registered top point. Do some basic validity checks too. This
+ // assumes that the TaggedUWord holding the stack pointer value is valid, but
+ // it should be, since it was constructed that way in the code just above.
+
+ // We could construct |stackImg| so that LUL reads directly from the stack in
+ // question, rather than from a copy of it. That would reduce overhead and
+ // space use a bit. However, it gives a problem with dynamic analysis tools
+ // (ASan, TSan, Valgrind) which is that such tools will report invalid or
+ // racing memory accesses, and such accesses will be reported deep inside LUL.
+ // By taking a copy here, we can either sanitise the copy (for Valgrind) or
+ // copy it using an unchecked memcpy (for ASan, TSan). That way we don't have
+ // to try and suppress errors inside LUL.
+ //
+ // N_STACK_BYTES is set to 160KB. This is big enough to hold all stacks
+ // observed in some minutes of testing, whilst keeping the size of this
+ // function (DoNativeBacktrace)'s frame reasonable. Most stacks observed in
+ // practice are small, 4KB or less, and so the copy costs are insignificant
+ // compared to other profiler overhead.
+ //
+ // |stackImg| is allocated on this (the sampling thread's) stack. That
+ // implies that the frame for this function is at least N_STACK_BYTES large.
+ // In general it would be considered unacceptable to have such a large frame
+ // on a stack, but it only exists for the unwinder thread, and so is not
+ // expected to be a problem. Allocating it on the heap is troublesome because
+ // this function runs whilst the sampled thread is suspended, so any heap
+ // allocation risks deadlock. Allocating it as a global variable is not
+ // thread safe, which would be a problem if we ever allow multiple sampler
+ // threads. Hence allocating it on the stack seems to be the least-worst
+ // option.
+
+ lul::StackImage stackImg;
+
+ {
+# if defined(GP_PLAT_amd64_linux) || defined(GP_PLAT_amd64_android) || \
+ defined(GP_PLAT_amd64_freebsd)
+ uintptr_t rEDZONE_SIZE = 128;
+ uintptr_t start = startRegs.xsp.Value() - rEDZONE_SIZE;
+# elif defined(GP_PLAT_arm_linux) || defined(GP_PLAT_arm_android)
+ uintptr_t rEDZONE_SIZE = 0;
+ uintptr_t start = startRegs.r13.Value() - rEDZONE_SIZE;
+# elif defined(GP_PLAT_arm64_linux) || defined(GP_PLAT_arm64_android) || \
+ defined(GP_PLAT_arm64_freebsd)
+ uintptr_t rEDZONE_SIZE = 0;
+ uintptr_t start = startRegs.sp.Value() - rEDZONE_SIZE;
+# elif defined(GP_PLAT_x86_linux) || defined(GP_PLAT_x86_android)
+ uintptr_t rEDZONE_SIZE = 0;
+ uintptr_t start = startRegs.xsp.Value() - rEDZONE_SIZE;
+# elif defined(GP_PLAT_mips64_linux)
+ uintptr_t rEDZONE_SIZE = 0;
+ uintptr_t start = startRegs.sp.Value() - rEDZONE_SIZE;
+# else
+# error "Unknown plat"
+# endif
+ uintptr_t end = reinterpret_cast<uintptr_t>(aThreadData.StackTop());
+ uintptr_t ws = sizeof(void*);
+ start &= ~(ws - 1);
+ end &= ~(ws - 1);
+ uintptr_t nToCopy = 0;
+ if (start < end) {
+ nToCopy = end - start;
+ if (nToCopy >= 1024u * 1024u) {
+ // start is abnormally far from end, possibly due to some special code
+ // that uses a separate stack elsewhere (e.g.: rr). In this case we just
+ // give up on this sample.
+ nToCopy = 0;
+ } else if (nToCopy > lul::N_STACK_BYTES) {
+ nToCopy = lul::N_STACK_BYTES;
+ }
+ }
+ MOZ_ASSERT(nToCopy <= lul::N_STACK_BYTES);
+ stackImg.mLen = nToCopy;
+ stackImg.mStartAvma = start;
+ if (nToCopy > 0) {
+ // If this is a vanilla memcpy(), ASAN makes the following complaint:
+ //
+ // ERROR: AddressSanitizer: stack-buffer-underflow ...
+ // ...
+ // HINT: this may be a false positive if your program uses some custom
+ // stack unwind mechanism or swapcontext
+ //
+ // This code is very much a custom stack unwind mechanism! So we use an
+ // alternative memcpy() implementation that is ignored by ASAN.
+# if defined(MOZ_HAVE_ASAN_IGNORE)
+ ASAN_memcpy(&stackImg.mContents[0], (void*)start, nToCopy);
+# else
+ memcpy(&stackImg.mContents[0], (void*)start, nToCopy);
+# endif
+ (void)VALGRIND_MAKE_MEM_DEFINED(&stackImg.mContents[0], nToCopy);
+ }
+ }
+
+ size_t framePointerFramesAcquired = 0;
+ lul::LUL* lul = CorePS::Lul();
+ MOZ_RELEASE_ASSERT(lul);
+ lul->Unwind(reinterpret_cast<uintptr_t*>(aNativeStack.mPCs),
+ reinterpret_cast<uintptr_t*>(aNativeStack.mSPs),
+ &aNativeStack.mCount, &framePointerFramesAcquired,
+ MAX_NATIVE_FRAMES, &startRegs, &stackImg);
+
+ // Update stats in the LUL stats object. Unfortunately this requires
+ // three global memory operations.
+ lul->mStats.mContext += 1;
+ lul->mStats.mCFI += aNativeStack.mCount - 1 - framePointerFramesAcquired;
+ lul->mStats.mFP += framePointerFramesAcquired;
+}
+
+#endif
+
+#ifdef HAVE_NATIVE_UNWIND
+static void DoNativeBacktrace(
+ const ThreadRegistration::UnlockedReaderAndAtomicRWOnThread& aThreadData,
+ const Registers& aRegs, NativeStack& aNativeStack,
+ StackWalkControl* aStackWalkControlIfSupported) {
+ // This method determines which stackwalker is used for periodic and
+ // synchronous samples. (Backtrace samples are treated differently, see
+ // profiler_suspend_and_sample_thread() for details). The only part of the
+ // ordering that matters is that LUL must precede FRAME_POINTER, because on
+ // Linux they can both be present.
+# if defined(USE_LUL_STACKWALK)
+ DoLULBacktrace(aThreadData, aRegs, aNativeStack,
+ aStackWalkControlIfSupported);
+# elif defined(USE_EHABI_STACKWALK)
+ DoEHABIBacktrace(aThreadData, aRegs, aNativeStack,
+ aStackWalkControlIfSupported);
+# elif defined(USE_FRAME_POINTER_STACK_WALK)
+ DoFramePointerBacktrace(aThreadData, aRegs, aNativeStack,
+ aStackWalkControlIfSupported);
+# elif defined(USE_MOZ_STACK_WALK)
+ DoMozStackWalkBacktrace(aThreadData, aRegs, aNativeStack,
+ aStackWalkControlIfSupported);
+# else
+# error "Invalid configuration"
+# endif
+}
+#endif
+
+// Writes some components shared by periodic and synchronous profiles to
+// ActivePS's ProfileBuffer. (This should only be called from DoSyncSample()
+// and DoPeriodicSample().)
+//
+// The grammar for entry sequences is in a comment above
+// ProfileBuffer::StreamSamplesToJSON.
+static inline void DoSharedSample(
+ bool aIsSynchronous, uint32_t aFeatures,
+ const ThreadRegistration::UnlockedReaderAndAtomicRWOnThread& aThreadData,
+ JsFrame* aJsFrames, const Registers& aRegs, uint64_t aSamplePos,
+ uint64_t aBufferRangeStart, ProfileBuffer& aBuffer,
+ StackCaptureOptions aCaptureOptions = StackCaptureOptions::Full) {
+ // WARNING: this function runs within the profiler's "critical section".
+
+ MOZ_ASSERT(!aBuffer.IsThreadSafe(),
+ "Mutexes cannot be used inside this critical section");
+
+ ProfileBufferCollector collector(aBuffer, aSamplePos, aBufferRangeStart);
+ StackWalkControl* stackWalkControlIfSupported = nullptr;
+#if defined(HAVE_NATIVE_UNWIND)
+ const bool captureNative = ProfilerFeature::HasStackWalk(aFeatures) &&
+ aCaptureOptions == StackCaptureOptions::Full;
+ StackWalkControl stackWalkControl;
+ if constexpr (StackWalkControl::scIsSupported) {
+ if (captureNative) {
+ stackWalkControlIfSupported = &stackWalkControl;
+ }
+ }
+#endif // defined(HAVE_NATIVE_UNWIND)
+ const uint32_t jsFramesCount =
+ aJsFrames ? ExtractJsFrames(aIsSynchronous, aThreadData, aRegs, collector,
+ aJsFrames, stackWalkControlIfSupported)
+ : 0;
+ NativeStack nativeStack;
+#if defined(HAVE_NATIVE_UNWIND)
+ if (captureNative) {
+ DoNativeBacktrace(aThreadData, aRegs, nativeStack,
+ stackWalkControlIfSupported);
+
+ MergeStacks(aFeatures, aIsSynchronous, aThreadData, aRegs, nativeStack,
+ collector, aJsFrames, jsFramesCount);
+ } else
+#endif
+ {
+ MergeStacks(aFeatures, aIsSynchronous, aThreadData, aRegs, nativeStack,
+ collector, aJsFrames, jsFramesCount);
+
+ // We can't walk the whole native stack, but we can record the top frame.
+ if (aCaptureOptions == StackCaptureOptions::Full) {
+ aBuffer.AddEntry(ProfileBufferEntry::NativeLeafAddr((void*)aRegs.mPC));
+ }
+ }
+}
+
+// Writes the components of a synchronous sample to the given ProfileBuffer.
+static void DoSyncSample(
+ uint32_t aFeatures,
+ const ThreadRegistration::UnlockedReaderAndAtomicRWOnThread& aThreadData,
+ const TimeStamp& aNow, const Registers& aRegs, ProfileBuffer& aBuffer,
+ StackCaptureOptions aCaptureOptions) {
+ // WARNING: this function runs within the profiler's "critical section".
+
+ MOZ_ASSERT(aCaptureOptions != StackCaptureOptions::NoStack,
+ "DoSyncSample should not be called when no capture is needed");
+
+ const uint64_t bufferRangeStart = aBuffer.BufferRangeStart();
+
+ const uint64_t samplePos =
+ aBuffer.AddThreadIdEntry(aThreadData.Info().ThreadId());
+
+ TimeDuration delta = aNow - CorePS::ProcessStartTime();
+ aBuffer.AddEntry(ProfileBufferEntry::Time(delta.ToMilliseconds()));
+
+ if (!aThreadData.GetJSContext()) {
+ // No JSContext, there is no JS frame buffer (and no need for it).
+ DoSharedSample(/* aIsSynchronous = */ true, aFeatures, aThreadData,
+ /* aJsFrames = */ nullptr, aRegs, samplePos,
+ bufferRangeStart, aBuffer, aCaptureOptions);
+ } else {
+ // JSContext is present, we need to lock the thread data to access the JS
+ // frame buffer.
+ ThreadRegistration::WithOnThreadRef([&](ThreadRegistration::OnThreadRef
+ aOnThreadRef) {
+ aOnThreadRef.WithConstLockedRWOnThread(
+ [&](const ThreadRegistration::LockedRWOnThread& aLockedThreadData) {
+ DoSharedSample(/* aIsSynchronous = */ true, aFeatures, aThreadData,
+ aLockedThreadData.GetJsFrameBuffer(), aRegs,
+ samplePos, bufferRangeStart, aBuffer,
+ aCaptureOptions);
+ });
+ });
+ }
+}
+
+// Writes the components of a periodic sample to ActivePS's ProfileBuffer.
+// The ThreadId entry is already written in the main ProfileBuffer, its location
+// is `aSamplePos`, we can write the rest to `aBuffer` (which may be different).
+static inline void DoPeriodicSample(
+ PSLockRef aLock,
+ const ThreadRegistration::UnlockedReaderAndAtomicRWOnThread& aThreadData,
+ const Registers& aRegs, uint64_t aSamplePos, uint64_t aBufferRangeStart,
+ ProfileBuffer& aBuffer) {
+ // WARNING: this function runs within the profiler's "critical section".
+
+ MOZ_RELEASE_ASSERT(ActivePS::Exists(aLock));
+
+ JsFrameBuffer& jsFrames = CorePS::JsFrames(aLock);
+ DoSharedSample(/* aIsSynchronous = */ false, ActivePS::Features(aLock),
+ aThreadData, jsFrames, aRegs, aSamplePos, aBufferRangeStart,
+ aBuffer);
+}
+
+// END sampling/unwinding code
+////////////////////////////////////////////////////////////////////////
+
+////////////////////////////////////////////////////////////////////////
+// BEGIN saving/streaming code
+
+const static uint64_t kJS_MAX_SAFE_UINTEGER = +9007199254740991ULL;
+
+static int64_t SafeJSInteger(uint64_t aValue) {
+ return aValue <= kJS_MAX_SAFE_UINTEGER ? int64_t(aValue) : -1;
+}
+
+static void AddSharedLibraryInfoToStream(JSONWriter& aWriter,
+ const SharedLibrary& aLib) {
+ aWriter.StartObjectElement();
+ aWriter.IntProperty("start", SafeJSInteger(aLib.GetStart()));
+ aWriter.IntProperty("end", SafeJSInteger(aLib.GetEnd()));
+ aWriter.IntProperty("offset", SafeJSInteger(aLib.GetOffset()));
+ aWriter.StringProperty("name", NS_ConvertUTF16toUTF8(aLib.GetModuleName()));
+ aWriter.StringProperty("path", NS_ConvertUTF16toUTF8(aLib.GetModulePath()));
+ aWriter.StringProperty("debugName",
+ NS_ConvertUTF16toUTF8(aLib.GetDebugName()));
+ aWriter.StringProperty("debugPath",
+ NS_ConvertUTF16toUTF8(aLib.GetDebugPath()));
+ aWriter.StringProperty("breakpadId", aLib.GetBreakpadId());
+ aWriter.StringProperty("codeId", aLib.GetCodeId());
+ aWriter.StringProperty("arch", aLib.GetArch());
+ aWriter.EndObject();
+}
+
+void AppendSharedLibraries(JSONWriter& aWriter,
+ const SharedLibraryInfo& aInfo) {
+ for (size_t i = 0; i < aInfo.GetSize(); i++) {
+ AddSharedLibraryInfoToStream(aWriter, aInfo.GetEntry(i));
+ }
+}
+
+static void StreamCategories(SpliceableJSONWriter& aWriter) {
+ // Same order as ProfilingCategory. Format:
+ // [
+ // {
+ // name: "Idle",
+ // color: "transparent",
+ // subcategories: ["Other"],
+ // },
+ // {
+ // name: "Other",
+ // color: "grey",
+ // subcategories: [
+ // "JSM loading",
+ // "Subprocess launching",
+ // "DLL loading"
+ // ]
+ // },
+ // ...
+ // ]
+
+#define CATEGORY_JSON_BEGIN_CATEGORY(name, labelAsString, color) \
+ aWriter.Start(); \
+ aWriter.StringProperty("name", labelAsString); \
+ aWriter.StringProperty("color", color); \
+ aWriter.StartArrayProperty("subcategories");
+#define CATEGORY_JSON_SUBCATEGORY(supercategory, name, labelAsString) \
+ aWriter.StringElement(labelAsString);
+#define CATEGORY_JSON_END_CATEGORY \
+ aWriter.EndArray(); \
+ aWriter.EndObject();
+
+ MOZ_PROFILING_CATEGORY_LIST(CATEGORY_JSON_BEGIN_CATEGORY,
+ CATEGORY_JSON_SUBCATEGORY,
+ CATEGORY_JSON_END_CATEGORY)
+
+#undef CATEGORY_JSON_BEGIN_CATEGORY
+#undef CATEGORY_JSON_SUBCATEGORY
+#undef CATEGORY_JSON_END_CATEGORY
+}
+
+static void StreamMarkerSchema(SpliceableJSONWriter& aWriter) {
+ // Get an array view with all registered marker-type-specific functions.
+ base_profiler_markers_detail::Streaming::LockedMarkerTypeFunctionsList
+ markerTypeFunctionsArray;
+ // List of streamed marker names, this is used to spot duplicates.
+ std::set<std::string> names;
+ // Stream the display schema for each different one. (Duplications may come
+ // from the same code potentially living in different libraries.)
+ for (const auto& markerTypeFunctions : markerTypeFunctionsArray) {
+ auto name = markerTypeFunctions.mMarkerTypeNameFunction();
+ // std::set.insert(T&&) returns a pair, its `second` is true if the element
+ // was actually inserted (i.e., it was not there yet.)
+ const bool didInsert =
+ names.insert(std::string(name.data(), name.size())).second;
+ if (didInsert) {
+ markerTypeFunctions.mMarkerSchemaFunction().Stream(aWriter, name);
+ }
+ }
+
+ // Now stream the Rust marker schemas. Passing the names set as a void pointer
+ // as well, so we can continue checking if the schemes are added already in
+ // the Rust side.
+ profiler::ffi::gecko_profiler_stream_marker_schemas(
+ &aWriter, static_cast<void*>(&names));
+}
+
+// Some meta information that is better recorded before streaming the profile.
+// This is *not* intended to be cached, as some values could change between
+// profiling sessions.
+struct PreRecordedMetaInformation {
+ bool mAsyncStacks;
+
+ // This struct should only live on the stack, so it's fine to use Auto
+ // strings.
+ nsAutoCString mHttpPlatform;
+ nsAutoCString mHttpOscpu;
+ nsAutoCString mHttpMisc;
+
+ nsAutoCString mRuntimeABI;
+ nsAutoCString mRuntimeToolkit;
+
+ nsAutoCString mAppInfoProduct;
+ nsAutoCString mAppInfoAppBuildID;
+ nsAutoCString mAppInfoSourceURL;
+
+ int32_t mProcessInfoCpuCount;
+ int32_t mProcessInfoCpuCores;
+ nsAutoCString mProcessInfoCpuName;
+};
+
+// This function should be called out of the profiler lock.
+// It gathers non-trivial data that doesn't require the profiler to stop, or for
+// which the request could theoretically deadlock if the profiler is locked.
+static PreRecordedMetaInformation PreRecordMetaInformation() {
+ MOZ_ASSERT(!PSAutoLock::IsLockedOnCurrentThread());
+
+ PreRecordedMetaInformation info = {}; // Aggregate-init all fields.
+
+ if (!NS_IsMainThread()) {
+ // Leave these properties out if we're not on the main thread.
+ // At the moment, the only case in which this function is called on a
+ // background thread is if we're in a content process and are going to
+ // send this profile to the parent process. In that case, the parent
+ // process profile's "meta" object already has the rest of the properties,
+ // and the parent process profile is dumped on that process's main thread.
+ return info;
+ }
+
+ info.mAsyncStacks = Preferences::GetBool("javascript.options.asyncstack");
+
+ nsresult res;
+
+ if (nsCOMPtr<nsIHttpProtocolHandler> http =
+ do_GetService(NS_NETWORK_PROTOCOL_CONTRACTID_PREFIX "http", &res);
+ !NS_FAILED(res) && http) {
+ Unused << http->GetPlatform(info.mHttpPlatform);
+
+#if defined(GP_OS_darwin)
+ // On Mac, the http "oscpu" is capped at 10.15, so we need to get the real
+ // OS version directly.
+ int major = 0;
+ int minor = 0;
+ int bugfix = 0;
+ nsCocoaFeatures::GetSystemVersion(major, minor, bugfix);
+ if (major != 0) {
+ info.mHttpOscpu.AppendLiteral("macOS ");
+ info.mHttpOscpu.AppendInt(major);
+ info.mHttpOscpu.AppendLiteral(".");
+ info.mHttpOscpu.AppendInt(minor);
+ info.mHttpOscpu.AppendLiteral(".");
+ info.mHttpOscpu.AppendInt(bugfix);
+ } else
+#endif
+#if defined(GP_OS_windows)
+ // On Windows, the http "oscpu" is capped at Windows 10, so we need to get
+ // the real OS version directly.
+ OSVERSIONINFO ovi = {sizeof(OSVERSIONINFO)};
+ if (GetVersionEx(&ovi)) {
+ info.mHttpOscpu.AppendLiteral("Windows ");
+ // The major version returned for Windows 11 is 10, but we can
+ // identify it from the build number.
+ info.mHttpOscpu.AppendInt(
+ ovi.dwBuildNumber >= 22000 ? 11 : int32_t(ovi.dwMajorVersion));
+ info.mHttpOscpu.AppendLiteral(".");
+ info.mHttpOscpu.AppendInt(int32_t(ovi.dwMinorVersion));
+# if defined(_ARM64_)
+ info.mHttpOscpu.AppendLiteral(" Arm64");
+# endif
+ info.mHttpOscpu.AppendLiteral("; build=");
+ info.mHttpOscpu.AppendInt(int32_t(ovi.dwBuildNumber));
+ } else
+#endif
+ {
+ Unused << http->GetOscpu(info.mHttpOscpu);
+ }
+
+ // Firefox version is capped to 109.0 in the http "misc" field due to some
+ // webcompat issues (Bug 1805967). We need to put the real version instead.
+ info.mHttpMisc.AssignLiteral("rv:");
+ info.mHttpMisc.AppendLiteral(MOZILLA_UAVERSION);
+ }
+
+ if (nsCOMPtr<nsIXULRuntime> runtime =
+ do_GetService("@mozilla.org/xre/runtime;1");
+ runtime) {
+ Unused << runtime->GetXPCOMABI(info.mRuntimeABI);
+ Unused << runtime->GetWidgetToolkit(info.mRuntimeToolkit);
+ }
+
+ if (nsCOMPtr<nsIXULAppInfo> appInfo =
+ do_GetService("@mozilla.org/xre/app-info;1");
+ appInfo) {
+ Unused << appInfo->GetName(info.mAppInfoProduct);
+ Unused << appInfo->GetAppBuildID(info.mAppInfoAppBuildID);
+ Unused << appInfo->GetSourceURL(info.mAppInfoSourceURL);
+ }
+
+ ProcessInfo processInfo = {}; // Aggregate-init all fields to false/zeroes.
+ if (NS_SUCCEEDED(CollectProcessInfo(processInfo))) {
+ info.mProcessInfoCpuCount = processInfo.cpuCount;
+ info.mProcessInfoCpuCores = processInfo.cpuCores;
+ info.mProcessInfoCpuName = processInfo.cpuName;
+ }
+
+ return info;
+}
+
+// Implemented in platform-specific cpps, to add object properties describing
+// the units of CPU measurements in samples.
+static void StreamMetaPlatformSampleUnits(PSLockRef aLock,
+ SpliceableJSONWriter& aWriter);
+
+static void StreamMetaJSCustomObject(
+ PSLockRef aLock, SpliceableJSONWriter& aWriter, bool aIsShuttingDown,
+ const PreRecordedMetaInformation& aPreRecordedMetaInformation) {
+ MOZ_RELEASE_ASSERT(CorePS::Exists() && ActivePS::Exists(aLock));
+
+ aWriter.IntProperty("version", 27);
+
+ // The "startTime" field holds the number of milliseconds since midnight
+ // January 1, 1970 GMT. This grotty code computes (Now - (Now -
+ // ProcessStartTime)) to convert CorePS::ProcessStartTime() into that form.
+ // Note: This is the only absolute time in the profile! All other timestamps
+ // are relative to this startTime.
+ TimeDuration delta = TimeStamp::Now() - CorePS::ProcessStartTime();
+ aWriter.DoubleProperty(
+ "startTime",
+ static_cast<double>(PR_Now() / 1000.0 - delta.ToMilliseconds()));
+
+ aWriter.DoubleProperty("profilingStartTime", (ActivePS::ProfilingStartTime() -
+ CorePS::ProcessStartTime())
+ .ToMilliseconds());
+
+ if (const TimeStamp contentEarliestTime =
+ ActivePS::Buffer(aLock)
+ .UnderlyingChunkedBuffer()
+ .GetEarliestChunkStartTimeStamp();
+ !contentEarliestTime.IsNull()) {
+ aWriter.DoubleProperty(
+ "contentEarliestTime",
+ (contentEarliestTime - CorePS::ProcessStartTime()).ToMilliseconds());
+ } else {
+ aWriter.NullProperty("contentEarliestTime");
+ }
+
+ const double profilingEndTime = profiler_time();
+ aWriter.DoubleProperty("profilingEndTime", profilingEndTime);
+
+ if (aIsShuttingDown) {
+ aWriter.DoubleProperty("shutdownTime", profilingEndTime);
+ } else {
+ aWriter.NullProperty("shutdownTime");
+ }
+
+ aWriter.StartArrayProperty("categories");
+ StreamCategories(aWriter);
+ aWriter.EndArray();
+
+ aWriter.StartArrayProperty("markerSchema");
+ StreamMarkerSchema(aWriter);
+ aWriter.EndArray();
+
+ ActivePS::WriteActiveConfiguration(aLock, aWriter,
+ MakeStringSpan("configuration"));
+
+ if (!NS_IsMainThread()) {
+ // Leave the rest of the properties out if we're not on the main thread.
+ // At the moment, the only case in which this function is called on a
+ // background thread is if we're in a content process and are going to
+ // send this profile to the parent process. In that case, the parent
+ // process profile's "meta" object already has the rest of the properties,
+ // and the parent process profile is dumped on that process's main thread.
+ return;
+ }
+
+ aWriter.DoubleProperty("interval", ActivePS::Interval(aLock));
+ aWriter.IntProperty("stackwalk", ActivePS::FeatureStackWalk(aLock));
+
+#ifdef DEBUG
+ aWriter.IntProperty("debug", 1);
+#else
+ aWriter.IntProperty("debug", 0);
+#endif
+
+ aWriter.IntProperty("gcpoison", JS::IsGCPoisoning() ? 1 : 0);
+
+ aWriter.IntProperty("asyncstack", aPreRecordedMetaInformation.mAsyncStacks);
+
+ aWriter.IntProperty("processType", XRE_GetProcessType());
+
+ aWriter.StringProperty("updateChannel", MOZ_STRINGIFY(MOZ_UPDATE_CHANNEL));
+
+ if (!aPreRecordedMetaInformation.mHttpPlatform.IsEmpty()) {
+ aWriter.StringProperty("platform",
+ aPreRecordedMetaInformation.mHttpPlatform);
+ }
+ if (!aPreRecordedMetaInformation.mHttpOscpu.IsEmpty()) {
+ aWriter.StringProperty("oscpu", aPreRecordedMetaInformation.mHttpOscpu);
+ }
+ if (!aPreRecordedMetaInformation.mHttpMisc.IsEmpty()) {
+ aWriter.StringProperty("misc", aPreRecordedMetaInformation.mHttpMisc);
+ }
+
+ if (!aPreRecordedMetaInformation.mRuntimeABI.IsEmpty()) {
+ aWriter.StringProperty("abi", aPreRecordedMetaInformation.mRuntimeABI);
+ }
+ if (!aPreRecordedMetaInformation.mRuntimeToolkit.IsEmpty()) {
+ aWriter.StringProperty("toolkit",
+ aPreRecordedMetaInformation.mRuntimeToolkit);
+ }
+
+ if (!aPreRecordedMetaInformation.mAppInfoProduct.IsEmpty()) {
+ aWriter.StringProperty("product",
+ aPreRecordedMetaInformation.mAppInfoProduct);
+ }
+ if (!aPreRecordedMetaInformation.mAppInfoAppBuildID.IsEmpty()) {
+ aWriter.StringProperty("appBuildID",
+ aPreRecordedMetaInformation.mAppInfoAppBuildID);
+ }
+ if (!aPreRecordedMetaInformation.mAppInfoSourceURL.IsEmpty()) {
+ aWriter.StringProperty("sourceURL",
+ aPreRecordedMetaInformation.mAppInfoSourceURL);
+ }
+
+ if (!aPreRecordedMetaInformation.mProcessInfoCpuName.IsEmpty()) {
+ aWriter.StringProperty("CPUName",
+ aPreRecordedMetaInformation.mProcessInfoCpuName);
+ }
+ if (aPreRecordedMetaInformation.mProcessInfoCpuCores > 0) {
+ aWriter.IntProperty("physicalCPUs",
+ aPreRecordedMetaInformation.mProcessInfoCpuCores);
+ }
+ if (aPreRecordedMetaInformation.mProcessInfoCpuCount > 0) {
+ aWriter.IntProperty("logicalCPUs",
+ aPreRecordedMetaInformation.mProcessInfoCpuCount);
+ }
+
+#if defined(GP_OS_android)
+ jni::String::LocalRef deviceInformation =
+ java::GeckoJavaSampler::GetDeviceInformation();
+ aWriter.StringProperty("device", deviceInformation->ToCString());
+#endif
+
+ aWriter.StartObjectProperty("sampleUnits");
+ {
+ aWriter.StringProperty("time", "ms");
+ aWriter.StringProperty("eventDelay", "ms");
+ StreamMetaPlatformSampleUnits(aLock, aWriter);
+ }
+ aWriter.EndObject();
+
+ // We should avoid collecting extension metadata for profiler when there is no
+ // observer service, since a ExtensionPolicyService could not be created then.
+ if (nsCOMPtr<nsIObserverService> os = services::GetObserverService()) {
+ aWriter.StartObjectProperty("extensions");
+ {
+ {
+ JSONSchemaWriter schema(aWriter);
+ schema.WriteField("id");
+ schema.WriteField("name");
+ schema.WriteField("baseURL");
+ }
+
+ aWriter.StartArrayProperty("data");
+ {
+ nsTArray<RefPtr<WebExtensionPolicy>> exts;
+ ExtensionPolicyService::GetSingleton().GetAll(exts);
+
+ for (auto& ext : exts) {
+ aWriter.StartArrayElement();
+
+ nsAutoString id;
+ ext->GetId(id);
+ aWriter.StringElement(NS_ConvertUTF16toUTF8(id));
+
+ aWriter.StringElement(NS_ConvertUTF16toUTF8(ext->Name()));
+
+ auto url = ext->GetURL(u""_ns);
+ if (url.isOk()) {
+ aWriter.StringElement(NS_ConvertUTF16toUTF8(url.unwrap()));
+ }
+
+ aWriter.EndArray();
+ }
+ }
+ aWriter.EndArray();
+ }
+ aWriter.EndObject();
+ }
+}
+
+static void StreamPages(PSLockRef aLock, SpliceableJSONWriter& aWriter) {
+ MOZ_RELEASE_ASSERT(CorePS::Exists());
+ ActivePS::DiscardExpiredPages(aLock);
+ for (const auto& page : ActivePS::ProfiledPages(aLock)) {
+ page->StreamJSON(aWriter);
+ }
+}
+
+#if defined(GP_OS_android)
+template <int N>
+static bool StartsWith(const nsACString& string, const char (&prefix)[N]) {
+ if (N - 1 > string.Length()) {
+ return false;
+ }
+ return memcmp(string.Data(), prefix, N - 1) == 0;
+}
+
+static JS::ProfilingCategoryPair InferJavaCategory(nsACString& aName) {
+ if (aName.EqualsLiteral("android.os.MessageQueue.nativePollOnce()")) {
+ return JS::ProfilingCategoryPair::IDLE;
+ }
+ if (aName.EqualsLiteral("java.lang.Object.wait()")) {
+ return JS::ProfilingCategoryPair::JAVA_BLOCKED;
+ }
+ if (StartsWith(aName, "android.") || StartsWith(aName, "com.android.")) {
+ return JS::ProfilingCategoryPair::JAVA_ANDROID;
+ }
+ if (StartsWith(aName, "mozilla.") || StartsWith(aName, "org.mozilla.")) {
+ return JS::ProfilingCategoryPair::JAVA_MOZILLA;
+ }
+ if (StartsWith(aName, "java.") || StartsWith(aName, "sun.") ||
+ StartsWith(aName, "com.sun.")) {
+ return JS::ProfilingCategoryPair::JAVA_LANGUAGE;
+ }
+ if (StartsWith(aName, "kotlin.") || StartsWith(aName, "kotlinx.")) {
+ return JS::ProfilingCategoryPair::JAVA_KOTLIN;
+ }
+ if (StartsWith(aName, "androidx.")) {
+ return JS::ProfilingCategoryPair::JAVA_ANDROIDX;
+ }
+ return JS::ProfilingCategoryPair::OTHER;
+}
+
+// Marker type for Java markers without any details.
+struct JavaMarker {
+ static constexpr Span<const char> MarkerTypeName() {
+ return MakeStringSpan("Java");
+ }
+ static void StreamJSONMarkerData(
+ baseprofiler::SpliceableJSONWriter& aWriter) {}
+ static MarkerSchema MarkerTypeDisplay() {
+ using MS = MarkerSchema;
+ MS schema{MS::Location::TimelineOverview, MS::Location::MarkerChart,
+ MS::Location::MarkerTable};
+ schema.SetAllLabels("{marker.name}");
+ return schema;
+ }
+};
+
+// Marker type for Java markers with a detail field.
+struct JavaMarkerWithDetails {
+ static constexpr Span<const char> MarkerTypeName() {
+ return MakeStringSpan("JavaWithDetails");
+ }
+ static void StreamJSONMarkerData(baseprofiler::SpliceableJSONWriter& aWriter,
+ const ProfilerString8View& aText) {
+ // This (currently) needs to be called "name" to be searchable on the
+ // front-end.
+ aWriter.StringProperty("name", aText);
+ }
+ static MarkerSchema MarkerTypeDisplay() {
+ using MS = MarkerSchema;
+ MS schema{MS::Location::TimelineOverview, MS::Location::MarkerChart,
+ MS::Location::MarkerTable};
+ schema.SetTooltipLabel("{marker.name}");
+ schema.SetChartLabel("{marker.data.name}");
+ schema.SetTableLabel("{marker.name} - {marker.data.name}");
+ schema.AddKeyLabelFormatSearchable("name", "Details", MS::Format::String,
+ MS::Searchable::Searchable);
+ return schema;
+ }
+};
+
+static void CollectJavaThreadProfileData(
+ nsTArray<java::GeckoJavaSampler::ThreadInfo::LocalRef>& javaThreads,
+ ProfileBuffer& aProfileBuffer) {
+ // Retrieve metadata about the threads.
+ const auto threadCount = java::GeckoJavaSampler::GetRegisteredThreadCount();
+ for (int i = 0; i < threadCount; i++) {
+ javaThreads.AppendElement(
+ java::GeckoJavaSampler::GetRegisteredThreadInfo(i));
+ }
+
+ // locked_profiler_start uses sample count is 1000 for Java thread.
+ // This entry size is enough now, but we might have to estimate it
+ // if we can customize it
+ // Pass the samples
+ int sampleId = 0;
+ while (true) {
+ const auto threadId = java::GeckoJavaSampler::GetThreadId(sampleId);
+ double sampleTime = java::GeckoJavaSampler::GetSampleTime(sampleId);
+ if (threadId == 0 || sampleTime == 0.0) {
+ break;
+ }
+
+ aProfileBuffer.AddThreadIdEntry(ProfilerThreadId::FromNumber(threadId));
+ aProfileBuffer.AddEntry(ProfileBufferEntry::Time(sampleTime));
+ int frameId = 0;
+ while (true) {
+ jni::String::LocalRef frameName =
+ java::GeckoJavaSampler::GetFrameName(sampleId, frameId++);
+ if (!frameName) {
+ break;
+ }
+ nsCString frameNameString = frameName->ToCString();
+
+ auto categoryPair = InferJavaCategory(frameNameString);
+ aProfileBuffer.CollectCodeLocation("", frameNameString.get(), 0, 0,
+ Nothing(), Nothing(),
+ Some(categoryPair));
+ }
+ sampleId++;
+ }
+
+ // Pass the markers now
+ while (true) {
+ // Gets the data from the Android UI thread only.
+ java::GeckoJavaSampler::Marker::LocalRef marker =
+ java::GeckoJavaSampler::PollNextMarker();
+ if (!marker) {
+ // All markers are transferred.
+ break;
+ }
+
+ // Get all the marker information from the Java thread using JNI.
+ const auto threadId = ProfilerThreadId::FromNumber(marker->GetThreadId());
+ nsCString markerName = marker->GetMarkerName()->ToCString();
+ jni::String::LocalRef text = marker->GetMarkerText();
+ TimeStamp startTime =
+ CorePS::ProcessStartTime() +
+ TimeDuration::FromMilliseconds(marker->GetStartTime());
+
+ double endTimeMs = marker->GetEndTime();
+ // A marker can be either a duration with start and end, or a point in time
+ // with only startTime. If endTime is 0, this means it's a point in time.
+ TimeStamp endTime = endTimeMs == 0
+ ? startTime
+ : CorePS::ProcessStartTime() +
+ TimeDuration::FromMilliseconds(endTimeMs);
+ MarkerTiming timing = endTimeMs == 0
+ ? MarkerTiming::InstantAt(startTime)
+ : MarkerTiming::Interval(startTime, endTime);
+
+ if (!text) {
+ // This marker doesn't have a text.
+ AddMarkerToBuffer(aProfileBuffer.UnderlyingChunkedBuffer(), markerName,
+ geckoprofiler::category::JAVA_ANDROID,
+ {MarkerThreadId(threadId), std::move(timing)},
+ JavaMarker{});
+ } else {
+ // This marker has a text.
+ AddMarkerToBuffer(aProfileBuffer.UnderlyingChunkedBuffer(), markerName,
+ geckoprofiler::category::JAVA_ANDROID,
+ {MarkerThreadId(threadId), std::move(timing)},
+ JavaMarkerWithDetails{}, text->ToCString());
+ }
+ }
+}
+#endif
+
+UniquePtr<ProfilerCodeAddressService>
+profiler_code_address_service_for_presymbolication() {
+ static const bool preSymbolicate = []() {
+ const char* symbolicate = getenv("MOZ_PROFILER_SYMBOLICATE");
+ return symbolicate && symbolicate[0] != '\0';
+ }();
+ return preSymbolicate ? MakeUnique<ProfilerCodeAddressService>() : nullptr;
+}
+
+static ProfilerResult<ProfileGenerationAdditionalInformation>
+locked_profiler_stream_json_for_this_process(
+ PSLockRef aLock, SpliceableJSONWriter& aWriter, double aSinceTime,
+ const PreRecordedMetaInformation& aPreRecordedMetaInformation,
+ bool aIsShuttingDown, ProfilerCodeAddressService* aService,
+ mozilla::ProgressLogger aProgressLogger) {
+ LOG("locked_profiler_stream_json_for_this_process");
+
+#ifdef DEBUG
+ PRIntervalTime slowWithSleeps = 0;
+ if (!XRE_IsParentProcess()) {
+ for (const auto& filter : ActivePS::Filters(aLock)) {
+ if (filter == "test-debug-child-slow-json") {
+ LOG("test-debug-child-slow-json");
+ // There are 10 slow-downs below, each will sleep 250ms, for a total of
+ // 2.5s, which should trigger the first progress request after 1s, and
+ // the next progress which will have advanced further, so this profile
+ // shouldn't get dropped.
+ slowWithSleeps = PR_MillisecondsToInterval(250);
+ } else if (filter == "test-debug-child-very-slow-json") {
+ LOG("test-debug-child-very-slow-json");
+ // Wait for more than 2s without any progress, which should get this
+ // profile discarded.
+ PR_Sleep(PR_SecondsToInterval(5));
+ }
+ }
+ }
+# define SLOW_DOWN_FOR_TESTING() \
+ if (slowWithSleeps != 0) { \
+ DEBUG_LOG("progress=%.0f%%, sleep...", \
+ aProgressLogger.GetGlobalProgress().ToDouble() * 100.0); \
+ PR_Sleep(slowWithSleeps); \
+ }
+#else // #ifdef DEBUG
+# define SLOW_DOWN_FOR_TESTING() /* No slow-downs */
+#endif // #ifdef DEBUG #else
+
+ MOZ_RELEASE_ASSERT(CorePS::Exists() && ActivePS::Exists(aLock));
+
+ AUTO_PROFILER_STATS(locked_profiler_stream_json_for_this_process);
+
+ const double collectionStartMs = profiler_time();
+
+ ProfileBuffer& buffer = ActivePS::Buffer(aLock);
+
+ aProgressLogger.SetLocalProgress(1_pc, "Locked profile buffer");
+
+ SLOW_DOWN_FOR_TESTING();
+
+ // If there is a set "Window length", discard older data.
+ Maybe<double> durationS = ActivePS::Duration(aLock);
+ if (durationS.isSome()) {
+ const double durationStartMs = collectionStartMs - *durationS * 1000;
+ buffer.DiscardSamplesBeforeTime(durationStartMs);
+ }
+ aProgressLogger.SetLocalProgress(2_pc, "Discarded old data");
+
+ if (aWriter.Failed()) {
+ return Err(ProfilerError::JsonGenerationFailed);
+ }
+ SLOW_DOWN_FOR_TESTING();
+
+#if defined(GP_OS_android)
+ // Java thread profile data should be collected before serializing the meta
+ // object. This is because Java thread adds some markers with marker schema
+ // objects. And these objects should be added before the serialization of the
+ // `profile.meta.markerSchema` array, so these marker schema objects can also
+ // be serialized properly. That's why java thread profile data needs to be
+ // done before everything.
+
+ // We are allocating it chunk by chunk. So this will not allocate 64 MiB
+ // at once. This size should be more than enough for java threads.
+ // This buffer is being created for each process but Android has
+ // relatively fewer processes compared to desktop, so it's okay here.
+ mozilla::ProfileBufferChunkManagerWithLocalLimit javaChunkManager(
+ 64 * 1024 * 1024, 1024 * 1024);
+ ProfileChunkedBuffer javaBufferManager(
+ ProfileChunkedBuffer::ThreadSafety::WithoutMutex, javaChunkManager);
+ ProfileBuffer javaBuffer(javaBufferManager);
+
+ nsTArray<java::GeckoJavaSampler::ThreadInfo::LocalRef> javaThreads;
+
+ if (ActivePS::FeatureJava(aLock)) {
+ CollectJavaThreadProfileData(javaThreads, javaBuffer);
+ aProgressLogger.SetLocalProgress(3_pc, "Collected Java thread");
+ }
+#endif
+
+ // Put shared library info
+ aWriter.StartArrayProperty("libs");
+ SharedLibraryInfo sharedLibraryInfo = SharedLibraryInfo::GetInfoForSelf();
+ sharedLibraryInfo.SortByAddress();
+ AppendSharedLibraries(aWriter, sharedLibraryInfo);
+ aWriter.EndArray();
+ aProgressLogger.SetLocalProgress(4_pc, "Wrote library information");
+
+ if (aWriter.Failed()) {
+ return Err(ProfilerError::JsonGenerationFailed);
+ }
+ SLOW_DOWN_FOR_TESTING();
+
+ // Put meta data
+ aWriter.StartObjectProperty("meta");
+ {
+ StreamMetaJSCustomObject(aLock, aWriter, aIsShuttingDown,
+ aPreRecordedMetaInformation);
+ }
+ aWriter.EndObject();
+ aProgressLogger.SetLocalProgress(5_pc, "Wrote profile metadata");
+
+ if (aWriter.Failed()) {
+ return Err(ProfilerError::JsonGenerationFailed);
+ }
+ SLOW_DOWN_FOR_TESTING();
+
+ // Put page data
+ aWriter.StartArrayProperty("pages");
+ { StreamPages(aLock, aWriter); }
+ aWriter.EndArray();
+ aProgressLogger.SetLocalProgress(6_pc, "Wrote pages");
+
+ buffer.StreamProfilerOverheadToJSON(
+ aWriter, CorePS::ProcessStartTime(), aSinceTime,
+ aProgressLogger.CreateSubLoggerTo(10_pc, "Wrote profiler overheads"));
+
+ buffer.StreamCountersToJSON(
+ aWriter, CorePS::ProcessStartTime(), aSinceTime,
+ aProgressLogger.CreateSubLoggerTo(14_pc, "Wrote counters"));
+
+ if (aWriter.Failed()) {
+ return Err(ProfilerError::JsonGenerationFailed);
+ }
+ SLOW_DOWN_FOR_TESTING();
+
+ // Lists the samples for each thread profile
+ aWriter.StartArrayProperty("threads");
+ {
+ ActivePS::DiscardExpiredDeadProfiledThreads(aLock);
+ aProgressLogger.SetLocalProgress(15_pc, "Discarded expired profiles");
+
+ ThreadRegistry::LockedRegistry lockedRegistry;
+ ActivePS::ProfiledThreadList threads =
+ ActivePS::ProfiledThreads(lockedRegistry, aLock);
+
+ const uint32_t threadCount = uint32_t(threads.length());
+
+ if (aWriter.Failed()) {
+ return Err(ProfilerError::JsonGenerationFailed);
+ }
+ SLOW_DOWN_FOR_TESTING();
+
+ // Prepare the streaming context for each thread.
+ ProcessStreamingContext processStreamingContext(
+ threadCount, aWriter.SourceFailureLatch(), CorePS::ProcessStartTime(),
+ aSinceTime);
+ for (auto&& [i, progressLogger] : aProgressLogger.CreateLoopSubLoggersTo(
+ 20_pc, threadCount, "Preparing thread streaming contexts...")) {
+ ActivePS::ProfiledThreadListElement& thread = threads[i];
+ MOZ_RELEASE_ASSERT(thread.mProfiledThreadData);
+ processStreamingContext.AddThreadStreamingContext(
+ *thread.mProfiledThreadData, buffer, thread.mJSContext, aService,
+ std::move(progressLogger));
+ if (aWriter.Failed()) {
+ return Err(ProfilerError::JsonGenerationFailed);
+ }
+ }
+
+ SLOW_DOWN_FOR_TESTING();
+
+ // Read the buffer once, and extract all samples and markers that the
+ // context expects.
+ buffer.StreamSamplesAndMarkersToJSON(
+ processStreamingContext, aProgressLogger.CreateSubLoggerTo(
+ "Processing samples and markers...", 80_pc,
+ "Processed samples and markers"));
+
+ if (aWriter.Failed()) {
+ return Err(ProfilerError::JsonGenerationFailed);
+ }
+ SLOW_DOWN_FOR_TESTING();
+
+ // Stream each thread from the pre-filled context.
+ ThreadStreamingContext* const contextListBegin =
+ processStreamingContext.begin();
+ MOZ_ASSERT(uint32_t(processStreamingContext.end() - contextListBegin) ==
+ threadCount);
+ for (auto&& [i, progressLogger] : aProgressLogger.CreateLoopSubLoggersTo(
+ 92_pc, threadCount, "Streaming threads...")) {
+ ThreadStreamingContext& threadStreamingContext = contextListBegin[i];
+ threadStreamingContext.FinalizeWriter();
+ threadStreamingContext.mProfiledThreadData.StreamJSON(
+ std::move(threadStreamingContext), aWriter,
+ CorePS::ProcessName(aLock), CorePS::ETLDplus1(aLock),
+ CorePS::ProcessStartTime(), aService, std::move(progressLogger));
+ if (aWriter.Failed()) {
+ return Err(ProfilerError::JsonGenerationFailed);
+ }
+ }
+ aProgressLogger.SetLocalProgress(92_pc, "Wrote samples and markers");
+
+#if defined(GP_OS_android)
+ if (ActivePS::FeatureJava(aLock)) {
+ for (java::GeckoJavaSampler::ThreadInfo::LocalRef& threadInfo :
+ javaThreads) {
+ ProfiledThreadData threadData(ThreadRegistrationInfo{
+ threadInfo->GetName()->ToCString().BeginReading(),
+ ProfilerThreadId::FromNumber(threadInfo->GetId()), false,
+ CorePS::ProcessStartTime()});
+
+ threadData.StreamJSON(
+ javaBuffer, nullptr, aWriter, CorePS::ProcessName(aLock),
+ CorePS::ETLDplus1(aLock), CorePS::ProcessStartTime(), aSinceTime,
+ nullptr,
+ aProgressLogger.CreateSubLoggerTo("Streaming Java thread...", 96_pc,
+ "Streamed Java thread"));
+ }
+ if (aWriter.Failed()) {
+ return Err(ProfilerError::JsonGenerationFailed);
+ }
+ } else {
+ aProgressLogger.SetLocalProgress(96_pc, "No Java thread");
+ }
+#endif
+
+ UniquePtr<char[]> baseProfileThreads =
+ ActivePS::MoveBaseProfileThreads(aLock);
+ if (baseProfileThreads) {
+ aWriter.Splice(MakeStringSpan(baseProfileThreads.get()));
+ if (aWriter.Failed()) {
+ return Err(ProfilerError::JsonGenerationFailed);
+ }
+ aProgressLogger.SetLocalProgress(97_pc, "Wrote baseprofiler data");
+ } else {
+ aProgressLogger.SetLocalProgress(97_pc, "No baseprofiler data");
+ }
+ }
+ aWriter.EndArray();
+
+ SLOW_DOWN_FOR_TESTING();
+
+ aWriter.StartArrayProperty("pausedRanges");
+ {
+ buffer.StreamPausedRangesToJSON(
+ aWriter, aSinceTime,
+ aProgressLogger.CreateSubLoggerTo("Streaming pauses...", 99_pc,
+ "Streamed pauses"));
+ }
+ aWriter.EndArray();
+
+ if (aWriter.Failed()) {
+ return Err(ProfilerError::JsonGenerationFailed);
+ }
+
+ ProfilingLog::Access([&](Json::Value& aProfilingLogObject) {
+ aProfilingLogObject[Json::StaticString{
+ "profilingLogEnd" TIMESTAMP_JSON_SUFFIX}] = ProfilingLog::Timestamp();
+
+ aWriter.StartObjectProperty("profilingLog");
+ {
+ nsAutoCString pid;
+ pid.AppendInt(int64_t(profiler_current_process_id().ToNumber()));
+ Json::String logString = ToCompactString(aProfilingLogObject);
+ aWriter.SplicedJSONProperty(pid, logString);
+ }
+ aWriter.EndObject();
+ });
+
+ const double collectionEndMs = profiler_time();
+
+ // Record timestamps for the collection into the buffer, so that consumers
+ // know why we didn't collect any samples for its duration.
+ // We put these entries into the buffer after we've collected the profile,
+ // so they'll be visible for the *next* profile collection (if they haven't
+ // been overwritten due to buffer wraparound by then).
+ buffer.AddEntry(ProfileBufferEntry::CollectionStart(collectionStartMs));
+ buffer.AddEntry(ProfileBufferEntry::CollectionEnd(collectionEndMs));
+
+#ifdef DEBUG
+ if (slowWithSleeps != 0) {
+ LOG("locked_profiler_stream_json_for_this_process done");
+ }
+#endif // DEBUG
+
+ return ProfileGenerationAdditionalInformation{std::move(sharedLibraryInfo)};
+}
+
+// Keep this internal function non-static, so it may be used by tests.
+ProfilerResult<ProfileGenerationAdditionalInformation>
+do_profiler_stream_json_for_this_process(
+ SpliceableJSONWriter& aWriter, double aSinceTime, bool aIsShuttingDown,
+ ProfilerCodeAddressService* aService,
+ mozilla::ProgressLogger aProgressLogger) {
+ LOG("profiler_stream_json_for_this_process");
+
+ MOZ_RELEASE_ASSERT(CorePS::Exists());
+
+ const auto preRecordedMetaInformation = PreRecordMetaInformation();
+
+ aProgressLogger.SetLocalProgress(2_pc, "PreRecordMetaInformation done");
+
+ if (profiler_is_active()) {
+ invoke_profiler_state_change_callbacks(ProfilingState::GeneratingProfile);
+ }
+
+ PSAutoLock lock;
+
+ if (!ActivePS::Exists(lock)) {
+ return Err(ProfilerError::IsInactive);
+ }
+
+ ProfileGenerationAdditionalInformation additionalInfo;
+ MOZ_TRY_VAR(
+ additionalInfo,
+ locked_profiler_stream_json_for_this_process(
+ lock, aWriter, aSinceTime, preRecordedMetaInformation,
+ aIsShuttingDown, aService,
+ aProgressLogger.CreateSubLoggerFromTo(
+ 3_pc, "locked_profiler_stream_json_for_this_process started",
+ 100_pc, "locked_profiler_stream_json_for_this_process done")));
+
+ if (aWriter.Failed()) {
+ return Err(ProfilerError::JsonGenerationFailed);
+ }
+ return additionalInfo;
+}
+
+ProfilerResult<ProfileGenerationAdditionalInformation>
+profiler_stream_json_for_this_process(SpliceableJSONWriter& aWriter,
+ double aSinceTime, bool aIsShuttingDown,
+ ProfilerCodeAddressService* aService,
+ mozilla::ProgressLogger aProgressLogger) {
+ MOZ_RELEASE_ASSERT(
+ !XRE_IsParentProcess() || NS_IsMainThread(),
+ "In the parent process, profiles should only be generated from the main "
+ "thread, otherwise they will be incomplete.");
+
+ ProfileGenerationAdditionalInformation additionalInfo;
+ MOZ_TRY_VAR(additionalInfo, do_profiler_stream_json_for_this_process(
+ aWriter, aSinceTime, aIsShuttingDown,
+ aService, std::move(aProgressLogger)));
+
+ return additionalInfo;
+}
+
+// END saving/streaming code
+////////////////////////////////////////////////////////////////////////
+
+static char FeatureCategory(uint32_t aFeature) {
+ if (aFeature & DefaultFeatures()) {
+ if (aFeature & AvailableFeatures()) {
+ return 'D';
+ }
+ return 'd';
+ }
+
+ if (aFeature & StartupExtraDefaultFeatures()) {
+ if (aFeature & AvailableFeatures()) {
+ return 'S';
+ }
+ return 's';
+ }
+
+ if (aFeature & AvailableFeatures()) {
+ return '-';
+ }
+ return 'x';
+}
+
+static void PrintUsage() {
+ MOZ_RELEASE_ASSERT(NS_IsMainThread());
+
+ printf(
+ "\n"
+ "Profiler environment variable usage:\n"
+ "\n"
+ " MOZ_PROFILER_HELP\n"
+ " If set to any value, prints this message.\n"
+ " Use MOZ_BASE_PROFILER_HELP for BaseProfiler help.\n"
+ "\n"
+ " MOZ_LOG\n"
+ " Enables logging. The levels of logging available are\n"
+ " 'prof:3' (least verbose), 'prof:4', 'prof:5' (most verbose).\n"
+ "\n"
+ " MOZ_PROFILER_STARTUP\n"
+ " If set to any value other than '' or '0'/'N'/'n', starts the\n"
+ " profiler immediately on start-up.\n"
+ " Useful if you want profile code that runs very early.\n"
+ "\n"
+ " MOZ_PROFILER_STARTUP_ENTRIES=<%u..%u>\n"
+ " If MOZ_PROFILER_STARTUP is set, specifies the number of entries per\n"
+ " process in the profiler's circular buffer when the profiler is first\n"
+ " started.\n"
+ " If unset, the platform default is used:\n"
+ " %u entries per process, or %u when MOZ_PROFILER_STARTUP is set.\n"
+ " (%u bytes per entry -> %u or %u total bytes per process)\n"
+ " Optional units in bytes: KB, KiB, MB, MiB, GB, GiB\n"
+ "\n"
+ " MOZ_PROFILER_STARTUP_DURATION=<1..>\n"
+ " If MOZ_PROFILER_STARTUP is set, specifies the maximum life time of\n"
+ " entries in the the profiler's circular buffer when the profiler is\n"
+ " first started, in seconds.\n"
+ " If unset, the life time of the entries will only be restricted by\n"
+ " MOZ_PROFILER_STARTUP_ENTRIES (or its default value), and no\n"
+ " additional time duration restriction will be applied.\n"
+ "\n"
+ " MOZ_PROFILER_STARTUP_INTERVAL=<1..%d>\n"
+ " If MOZ_PROFILER_STARTUP is set, specifies the sample interval,\n"
+ " measured in milliseconds, when the profiler is first started.\n"
+ " If unset, the platform default is used.\n"
+ "\n"
+ " MOZ_PROFILER_STARTUP_FEATURES_BITFIELD=<Number>\n"
+ " If MOZ_PROFILER_STARTUP is set, specifies the profiling features, as\n"
+ " the integer value of the features bitfield.\n"
+ " If unset, the value from MOZ_PROFILER_STARTUP_FEATURES is used.\n"
+ "\n"
+ " MOZ_PROFILER_STARTUP_FEATURES=<Features>\n"
+ " If MOZ_PROFILER_STARTUP is set, specifies the profiling features, as\n"
+ " a comma-separated list of strings.\n"
+ " Ignored if MOZ_PROFILER_STARTUP_FEATURES_BITFIELD is set.\n"
+ " If unset, the platform default is used.\n"
+ "\n"
+ " Features: (x=unavailable, D/d=default/unavailable,\n"
+ " S/s=MOZ_PROFILER_STARTUP extra default/unavailable)\n",
+ unsigned(ActivePS::scMinimumBufferEntries),
+ unsigned(ActivePS::scMaximumBufferEntries),
+ unsigned(PROFILER_DEFAULT_ENTRIES.Value()),
+ unsigned(PROFILER_DEFAULT_STARTUP_ENTRIES.Value()),
+ unsigned(scBytesPerEntry),
+ unsigned(PROFILER_DEFAULT_ENTRIES.Value() * scBytesPerEntry),
+ unsigned(PROFILER_DEFAULT_STARTUP_ENTRIES.Value() * scBytesPerEntry),
+ PROFILER_MAX_INTERVAL);
+
+#define PRINT_FEATURE(n_, str_, Name_, desc_) \
+ printf(" %c %7u: \"%s\" (%s)\n", FeatureCategory(ProfilerFeature::Name_), \
+ ProfilerFeature::Name_, str_, desc_);
+
+ PROFILER_FOR_EACH_FEATURE(PRINT_FEATURE)
+
+#undef PRINT_FEATURE
+
+ printf(
+ " - \"default\" (All above D+S defaults)\n"
+ "\n"
+ " MOZ_PROFILER_STARTUP_FILTERS=<Filters>\n"
+ " If MOZ_PROFILER_STARTUP is set, specifies the thread filters, as a\n"
+ " comma-separated list of strings. A given thread will be sampled if\n"
+ " any of the filters is a case-insensitive substring of the thread\n"
+ " name. If unset, a default is used.\n"
+ "\n"
+ " MOZ_PROFILER_STARTUP_ACTIVE_TAB_ID=<Number>\n"
+ " This variable is used to propagate the activeTabID of\n"
+ " the profiler init params to subprocesses.\n"
+ "\n"
+ " MOZ_PROFILER_SHUTDOWN=<Filename>\n"
+ " If set, the profiler saves a profile to the named file on shutdown.\n"
+ " If the Filename contains \"%%p\", this will be replaced with the'\n"
+ " process id of the parent process.\n"
+ "\n"
+ " MOZ_PROFILER_SYMBOLICATE\n"
+ " If set, the profiler will pre-symbolicate profiles.\n"
+ " *Note* This will add a significant pause when gathering data, and\n"
+ " is intended mainly for local development.\n"
+ "\n"
+ " MOZ_PROFILER_LUL_TEST\n"
+ " If set to any value, runs LUL unit tests at startup.\n"
+ "\n"
+ " This platform %s native unwinding.\n"
+ "\n",
+#if defined(HAVE_NATIVE_UNWIND)
+ "supports"
+#else
+ "does not support"
+#endif
+ );
+}
+
+////////////////////////////////////////////////////////////////////////
+// BEGIN Sampler
+
+#if defined(GP_OS_linux) || defined(GP_OS_android)
+struct SigHandlerCoordinator;
+#endif
+
+// Sampler performs setup and teardown of the state required to sample with the
+// profiler. Sampler may exist when ActivePS is not present.
+//
+// SuspendAndSampleAndResumeThread must only be called from a single thread,
+// and must not sample the thread it is being called from. A separate Sampler
+// instance must be used for each thread which wants to capture samples.
+
+// WARNING WARNING WARNING WARNING WARNING WARNING WARNING WARNING
+//
+// With the exception of SamplerThread, all Sampler objects must be Disable-d
+// before releasing the lock which was used to create them. This avoids races
+// on linux with the SIGPROF signal handler.
+
+class Sampler {
+ public:
+ // Sets up the profiler such that it can begin sampling.
+ explicit Sampler(PSLockRef aLock);
+
+ // Disable the sampler, restoring it to its previous state. This must be
+ // called once, and only once, before the Sampler is destroyed.
+ void Disable(PSLockRef aLock);
+
+ // This method suspends and resumes the samplee thread. It calls the passed-in
+ // function-like object aProcessRegs (passing it a populated |const
+ // Registers&| arg) while the samplee thread is suspended. Note that
+ // the aProcessRegs function must be very careful not to do anything that
+ // requires a lock, since we may have interrupted the thread at any point.
+ // As an example, you can't call TimeStamp::Now() since on windows it
+ // takes a lock on the performance counter.
+ //
+ // Func must be a function-like object of type `void()`.
+ template <typename Func>
+ void SuspendAndSampleAndResumeThread(
+ PSLockRef aLock,
+ const ThreadRegistration::UnlockedReaderAndAtomicRWOnThread& aThreadData,
+ const TimeStamp& aNow, const Func& aProcessRegs);
+
+ private:
+#if defined(GP_OS_linux) || defined(GP_OS_android) || defined(GP_OS_freebsd)
+ // Used to restore the SIGPROF handler when ours is removed.
+ struct sigaction mOldSigprofHandler;
+
+ // This process' ID. Needed as an argument for tgkill in
+ // SuspendAndSampleAndResumeThread.
+ ProfilerProcessId mMyPid;
+
+ // The sampler thread's ID. Used to assert that it is not sampling itself,
+ // which would lead to deadlock.
+ ProfilerThreadId mSamplerTid;
+
+ public:
+ // This is the one-and-only variable used to communicate between the sampler
+ // thread and the samplee thread's signal handler. It's static because the
+ // samplee thread's signal handler is static.
+ static struct SigHandlerCoordinator* sSigHandlerCoordinator;
+#endif
+};
+
+// END Sampler
+////////////////////////////////////////////////////////////////////////
+
+// Platform-specific function that retrieves per-thread CPU measurements.
+static RunningTimes GetThreadRunningTimesDiff(
+ PSLockRef aLock,
+ ThreadRegistration::UnlockedRWForLockedProfiler& aThreadData);
+// Platform-specific function that *may* discard CPU measurements since the
+// previous call to GetThreadRunningTimesDiff, if the way to suspend threads on
+// this platform may add running times to that thread.
+// No-op otherwise, if suspending a thread doesn't make it work.
+static void DiscardSuspendedThreadRunningTimes(
+ PSLockRef aLock,
+ ThreadRegistration::UnlockedRWForLockedProfiler& aThreadData);
+
+// Platform-specific function that retrieves process CPU measurements.
+static RunningTimes GetProcessRunningTimesDiff(
+ PSLockRef aLock, RunningTimes& aPreviousRunningTimesToBeUpdated);
+
+// Template function to be used by `GetThreadRunningTimesDiff()` (unless some
+// platform has a better way to achieve this).
+// It help perform CPU measurements and tie them to a timestamp, such that the
+// measurements and timestamp are very close together.
+// This is necessary, because the relative CPU usage is computed by dividing
+// consecutive CPU measurements by their timestamp difference; if there was an
+// unexpected big gap, it could skew this computation and produce impossible
+// spikes that would hide the rest of the data. See bug 1685938 for more info.
+// Note that this may call the measurement function more than once; it is
+// assumed to normally be fast.
+// This was verified experimentally, but there is currently no regression
+// testing for it; see follow-up bug 1687402.
+template <typename GetCPURunningTimesFunction>
+RunningTimes GetRunningTimesWithTightTimestamp(
+ GetCPURunningTimesFunction&& aGetCPURunningTimesFunction) {
+ // Once per process, compute a threshold over which running times and their
+ // timestamp is considered too far apart.
+ static const TimeDuration scMaxRunningTimesReadDuration = [&]() {
+ // Run the main CPU measurements + timestamp a number of times and capture
+ // their durations.
+ constexpr int loops = 128;
+ TimeDuration durations[loops];
+ RunningTimes runningTimes;
+ TimeStamp before = TimeStamp::Now();
+ for (int i = 0; i < loops; ++i) {
+ AUTO_PROFILER_STATS(GetRunningTimes_MaxRunningTimesReadDuration);
+ aGetCPURunningTimesFunction(runningTimes);
+ const TimeStamp after = TimeStamp::Now();
+ durations[i] = after - before;
+ before = after;
+ }
+ // Move median duration to the middle.
+ std::nth_element(&durations[0], &durations[loops / 2], &durations[loops]);
+ // Use median*8 as cut-off point.
+ // Typical durations should be around a microsecond, the cut-off should then
+ // be around 10 microseconds, well below the expected minimum inter-sample
+ // interval (observed as a few milliseconds), so overall this should keep
+ // cpu/interval spikes
+ return durations[loops / 2] * 8;
+ }();
+
+ // Record CPU measurements between two timestamps.
+ RunningTimes runningTimes;
+ TimeStamp before = TimeStamp::Now();
+ aGetCPURunningTimesFunction(runningTimes);
+ TimeStamp after = TimeStamp::Now();
+ const TimeDuration duration = after - before;
+
+ // In most cases, the above should be quick enough. But if not (e.g., because
+ // of an OS context switch), repeat once:
+ if (MOZ_UNLIKELY(duration > scMaxRunningTimesReadDuration)) {
+ AUTO_PROFILER_STATS(GetRunningTimes_REDO);
+ RunningTimes runningTimes2;
+ aGetCPURunningTimesFunction(runningTimes2);
+ TimeStamp after2 = TimeStamp::Now();
+ const TimeDuration duration2 = after2 - after;
+ if (duration2 < duration) {
+ // We did it faster, use the new results. (But it could still be slower
+ // than expected, see note below for why it's acceptable.)
+ // This must stay *after* the CPU measurements.
+ runningTimes2.SetPostMeasurementTimeStamp(after2);
+ return runningTimes2;
+ }
+ // Otherwise use the initial results, they were slow, but faster than the
+ // second attempt.
+ // This means that something bad happened twice in a row on the same thread!
+ // So trying more times would be unlikely to get much better, and would be
+ // more expensive than the precision is worth.
+ // At worst, it means that a spike of activity may be reported in the next
+ // time slice. But in the end, the cumulative work is conserved, so it
+ // should still be visible at about the correct time in the graph.
+ AUTO_PROFILER_STATS(GetRunningTimes_RedoWasWorse);
+ }
+
+ // This must stay *after* the CPU measurements.
+ runningTimes.SetPostMeasurementTimeStamp(after);
+
+ return runningTimes;
+}
+
+////////////////////////////////////////////////////////////////////////
+// BEGIN SamplerThread
+
+// The sampler thread controls sampling and runs whenever the profiler is
+// active. It periodically runs through all registered threads, finds those
+// that should be sampled, then pauses and samples them.
+
+class SamplerThread {
+ public:
+ // Creates a sampler thread, but doesn't start it.
+ SamplerThread(PSLockRef aLock, uint32_t aActivityGeneration,
+ double aIntervalMilliseconds, uint32_t aFeatures);
+ ~SamplerThread();
+
+ // This runs on (is!) the sampler thread.
+ void Run();
+
+#if defined(GP_OS_windows)
+ // This runs on (is!) the thread to spy on unregistered threads.
+ void RunUnregisteredThreadSpy();
+#endif
+
+ // This runs on the main thread.
+ void Stop(PSLockRef aLock);
+
+ void AppendPostSamplingCallback(PSLockRef, PostSamplingCallback&& aCallback) {
+ // We are under lock, so it's safe to just modify the list pointer.
+ // Also this means the sampler has not started its run yet, so any callback
+ // added now will be invoked at the end of the next loop; this guarantees
+ // that the callback will be invoked after at least one full sampling loop.
+ mPostSamplingCallbackList = MakeUnique<PostSamplingCallbackListItem>(
+ std::move(mPostSamplingCallbackList), std::move(aCallback));
+ }
+
+ private:
+ void SpyOnUnregisteredThreads();
+
+ // Item containing a post-sampling callback, and a tail-list of more items.
+ // Using a linked list means no need to move items when adding more, and
+ // "stealing" the whole list is one pointer move.
+ struct PostSamplingCallbackListItem {
+ UniquePtr<PostSamplingCallbackListItem> mPrev;
+ PostSamplingCallback mCallback;
+
+ PostSamplingCallbackListItem(UniquePtr<PostSamplingCallbackListItem> aPrev,
+ PostSamplingCallback&& aCallback)
+ : mPrev(std::move(aPrev)), mCallback(std::move(aCallback)) {}
+ };
+
+ [[nodiscard]] UniquePtr<PostSamplingCallbackListItem>
+ TakePostSamplingCallbacks(PSLockRef) {
+ return std::move(mPostSamplingCallbackList);
+ }
+
+ static void InvokePostSamplingCallbacks(
+ UniquePtr<PostSamplingCallbackListItem> aCallbacks,
+ SamplingState aSamplingState) {
+ if (!aCallbacks) {
+ return;
+ }
+ // We want to drill down to the last element in this list, which is the
+ // oldest one, so that we invoke them in FIFO order.
+ // We don't expect many callbacks, so it's safe to recurse. Note that we're
+ // moving-from the UniquePtr, so the tail will implicitly get destroyed.
+ InvokePostSamplingCallbacks(std::move(aCallbacks->mPrev), aSamplingState);
+ // We are going to destroy this item, so we can safely move-from the
+ // callback before calling it (in case it has an rvalue-ref-qualified call
+ // operator).
+ std::move(aCallbacks->mCallback)(aSamplingState);
+ // It may be tempting for a future maintainer to change aCallbacks into an
+ // rvalue reference; this will remind them not to do that!
+ static_assert(
+ std::is_same_v<decltype(aCallbacks),
+ UniquePtr<PostSamplingCallbackListItem>>,
+ "We need to capture the list by-value, to implicitly destroy it");
+ }
+
+ // This suspends the calling thread for the given number of microseconds.
+ // Best effort timing.
+ void SleepMicro(uint32_t aMicroseconds);
+
+ // The sampler used to suspend and sample threads.
+ Sampler mSampler;
+
+ // The activity generation, for detecting when the sampler thread must stop.
+ const uint32_t mActivityGeneration;
+
+ // The interval between samples, measured in microseconds.
+ const int mIntervalMicroseconds;
+
+ // The OS-specific handle for the sampler thread.
+#if defined(GP_OS_windows)
+ HANDLE mThread;
+ HANDLE mUnregisteredThreadSpyThread = nullptr;
+ enum class SpyingState {
+ NoSpying,
+ Spy_Initializing,
+ // Spy is waiting for SamplerToSpy_Start or MainToSpy_Shutdown.
+ Spy_Waiting,
+ // Sampler requests spy to start working. May be pre-empted by
+ // MainToSpy_Shutdown.
+ SamplerToSpy_Start,
+ // Spy is currently working, cannot be interrupted, only the spy is allowed
+ // to change the state again.
+ Spy_Working,
+ // Main control requests spy to shut down.
+ MainToSpy_Shutdown,
+ // Spy notified main control that it's out of the loop, about to exit.
+ SpyToMain_ShuttingDown
+ };
+ SpyingState mSpyingState = SpyingState::NoSpying;
+ // The sampler will increment this while the spy is working, then while the
+ // spy is waiting the sampler will decrement it until <=0 before starting the
+ // spy. This will ensure that the work doesn't take more than 50% of a CPU
+ // core.
+ int mDelaySpyStart = 0;
+ Monitor mSpyingStateMonitor MOZ_UNANNOTATED{
+ "SamplerThread::mSpyingStateMonitor"};
+#elif defined(GP_OS_darwin) || defined(GP_OS_linux) || \
+ defined(GP_OS_android) || defined(GP_OS_freebsd)
+ pthread_t mThread;
+#endif
+
+ // Post-sampling callbacks are kept in a simple linked list, which will be
+ // stolen by the sampler thread at the end of its next run.
+ UniquePtr<PostSamplingCallbackListItem> mPostSamplingCallbackList;
+
+#if defined(GP_OS_windows)
+ bool mNoTimerResolutionChange = true;
+#endif
+
+ struct SpiedThread {
+ base::ProcessId mThreadId;
+ nsCString mName;
+ uint64_t mCPUTimeNs;
+
+ SpiedThread(base::ProcessId aThreadId, const nsACString& aName,
+ uint64_t aCPUTimeNs)
+ : mThreadId(aThreadId), mName(aName), mCPUTimeNs(aCPUTimeNs) {}
+
+ // Comparisons with just a thread id, for easy searching in an array.
+ friend bool operator==(const SpiedThread& aSpiedThread,
+ base::ProcessId aThreadId) {
+ return aSpiedThread.mThreadId == aThreadId;
+ }
+ friend bool operator==(base::ProcessId aThreadId,
+ const SpiedThread& aSpiedThread) {
+ return aThreadId == aSpiedThread.mThreadId;
+ }
+ };
+
+ // Time at which mSpiedThreads was previously updated. Null before 1st update.
+ TimeStamp mLastSpying;
+ // Unregistered threads that have been found, and are being spied on.
+ using SpiedThreads = AutoTArray<SpiedThread, 128>;
+ SpiedThreads mSpiedThreads;
+
+ SamplerThread(const SamplerThread&) = delete;
+ void operator=(const SamplerThread&) = delete;
+};
+
+// [[nodiscard]] static
+bool ActivePS::AppendPostSamplingCallback(PSLockRef aLock,
+ PostSamplingCallback&& aCallback) {
+ if (!sInstance || !sInstance->mSamplerThread) {
+ return false;
+ }
+ sInstance->mSamplerThread->AppendPostSamplingCallback(aLock,
+ std::move(aCallback));
+ return true;
+}
+
+// This function is required because we need to create a SamplerThread within
+// ActivePS's constructor, but SamplerThread is defined after ActivePS. It
+// could probably be removed by moving some code around.
+static SamplerThread* NewSamplerThread(PSLockRef aLock, uint32_t aGeneration,
+ double aInterval, uint32_t aFeatures) {
+ return new SamplerThread(aLock, aGeneration, aInterval, aFeatures);
+}
+
+// This function is the sampler thread. This implementation is used for all
+// targets.
+void SamplerThread::Run() {
+ PR_SetCurrentThreadName("SamplerThread");
+
+ // Features won't change during this SamplerThread's lifetime, so we can read
+ // them once and store them locally.
+ const uint32_t features = []() -> uint32_t {
+ PSAutoLock lock;
+ if (!ActivePS::Exists(lock)) {
+ // If there is no active profiler, it doesn't matter what we return,
+ // because this thread will exit before any feature is used.
+ return 0;
+ }
+ return ActivePS::Features(lock);
+ }();
+
+ // Not *no*-stack-sampling means we do want stack sampling.
+ const bool stackSampling = !ProfilerFeature::HasNoStackSampling(features);
+
+ const bool cpuUtilization = ProfilerFeature::HasCPUUtilization(features);
+
+ // Use local ProfileBuffer and underlying buffer to capture the stack.
+ // (This is to avoid touching the core buffer lock while a thread is
+ // suspended, because that thread could be working with the core buffer as
+ // well.
+ mozilla::ProfileBufferChunkManagerSingle localChunkManager(
+ ProfileBufferChunkManager::scExpectedMaximumStackSize);
+ ProfileChunkedBuffer localBuffer(
+ ProfileChunkedBuffer::ThreadSafety::WithoutMutex, localChunkManager);
+ ProfileBuffer localProfileBuffer(localBuffer);
+
+ // Will be kept between collections, to know what each collection does.
+ auto previousState = localBuffer.GetState();
+
+ // This will be filled at every loop, to be used by the next loop to compute
+ // the CPU utilization between samples.
+ RunningTimes processRunningTimes;
+
+ // This will be set inside the loop, from inside the lock scope, to capture
+ // all callbacks added before that, but none after the lock is released.
+ UniquePtr<PostSamplingCallbackListItem> postSamplingCallbacks;
+ // This will be set inside the loop, before invoking callbacks outside.
+ SamplingState samplingState{};
+
+ const TimeDuration sampleInterval =
+ TimeDuration::FromMicroseconds(mIntervalMicroseconds);
+ const uint32_t minimumIntervalSleepUs =
+ static_cast<uint32_t>(mIntervalMicroseconds / 4);
+
+ // This is the scheduled time at which each sampling loop should start.
+ // It will determine the ideal next sampling start by adding the expected
+ // interval, unless when sampling runs late -- See end of while() loop.
+ TimeStamp scheduledSampleStart = TimeStamp::Now();
+
+ while (true) {
+ const TimeStamp sampleStart = TimeStamp::Now();
+
+ // This scope is for |lock|. It ends before we sleep below.
+ {
+ // There should be no local callbacks left from a previous loop.
+ MOZ_ASSERT(!postSamplingCallbacks);
+
+ PSAutoLock lock;
+ TimeStamp lockAcquired = TimeStamp::Now();
+
+ // Move all the post-sampling callbacks locally, so that new ones cannot
+ // sneak in between the end of the lock scope and the invocation after it.
+ postSamplingCallbacks = TakePostSamplingCallbacks(lock);
+
+ if (!ActivePS::Exists(lock)) {
+ // Exit the `while` loop, including the lock scope, before invoking
+ // callbacks and returning.
+ samplingState = SamplingState::JustStopped;
+ break;
+ }
+
+ // At this point profiler_stop() might have been called, and
+ // profiler_start() might have been called on another thread. If this
+ // happens the generation won't match.
+ if (ActivePS::Generation(lock) != mActivityGeneration) {
+ samplingState = SamplingState::JustStopped;
+ // Exit the `while` loop, including the lock scope, before invoking
+ // callbacks and returning.
+ break;
+ }
+
+ ActivePS::ClearExpiredExitProfiles(lock);
+
+ TimeStamp expiredMarkersCleaned = TimeStamp::Now();
+
+ if (int(gSkipSampling) <= 0 && !ActivePS::IsSamplingPaused(lock)) {
+ double sampleStartDeltaMs =
+ (sampleStart - CorePS::ProcessStartTime()).ToMilliseconds();
+ ProfileBuffer& buffer = ActivePS::Buffer(lock);
+
+ // Before sampling counters, update the process CPU counter if active.
+ if (ActivePS::ProcessCPUCounter* processCPUCounter =
+ ActivePS::MaybeProcessCPUCounter(lock);
+ processCPUCounter) {
+ RunningTimes processRunningTimesDiff =
+ GetProcessRunningTimesDiff(lock, processRunningTimes);
+ Maybe<uint64_t> cpu = processRunningTimesDiff.GetJsonThreadCPUDelta();
+ if (cpu) {
+ processCPUCounter->Add(static_cast<int64_t>(*cpu));
+ }
+ }
+
+ if (PowerCounters* powerCounters = ActivePS::MaybePowerCounters(lock);
+ powerCounters) {
+ powerCounters->Sample();
+ }
+
+ // handle per-process generic counters
+ const Vector<BaseProfilerCount*>& counters = CorePS::Counters(lock);
+ for (auto& counter : counters) {
+ if (auto sample = counter->Sample(); sample.isSampleNew) {
+ // create Buffer entries for each counter
+ buffer.AddEntry(ProfileBufferEntry::CounterId(counter));
+ buffer.AddEntry(ProfileBufferEntry::Time(sampleStartDeltaMs));
+#if defined(MOZ_REPLACE_MALLOC) && defined(MOZ_PROFILER_MEMORY)
+ if (ActivePS::IsMemoryCounter(counter)) {
+ // For the memory counter, substract the size of our buffer to
+ // avoid giving the misleading impression that the memory use
+ // keeps on growing when it's just the profiler session that's
+ // using a larger buffer as it gets longer.
+ sample.count -= static_cast<int64_t>(
+ ActivePS::ControlledChunkManager(lock).TotalSize());
+ }
+#endif
+ // In the future, we may support keyed counters - for example,
+ // counters with a key which is a thread ID. For "simple" counters
+ // we'll just use a key of 0.
+ buffer.AddEntry(ProfileBufferEntry::CounterKey(0));
+ buffer.AddEntry(ProfileBufferEntry::Count(sample.count));
+ if (sample.number) {
+ buffer.AddEntry(ProfileBufferEntry::Number(sample.number));
+ }
+ }
+ }
+ TimeStamp countersSampled = TimeStamp::Now();
+
+ if (stackSampling || cpuUtilization) {
+ samplingState = SamplingState::SamplingCompleted;
+
+ // Prevent threads from ending (or starting) and allow access to all
+ // OffThreadRef's.
+ ThreadRegistry::LockedRegistry lockedRegistry;
+
+ for (ThreadRegistry::OffThreadRef offThreadRef : lockedRegistry) {
+ ThreadRegistration::UnlockedRWForLockedProfiler&
+ unlockedThreadData =
+ offThreadRef.UnlockedRWForLockedProfilerRef();
+ ProfiledThreadData* profiledThreadData =
+ unlockedThreadData.GetProfiledThreadData(lock);
+ if (!profiledThreadData) {
+ // This thread is not being profiled, continue with the next one.
+ continue;
+ }
+
+ const ThreadProfilingFeatures whatToProfile =
+ unlockedThreadData.ProfilingFeatures();
+ const bool threadCPUUtilization =
+ cpuUtilization &&
+ DoFeaturesIntersect(whatToProfile,
+ ThreadProfilingFeatures::CPUUtilization);
+ const bool threadStackSampling =
+ stackSampling &&
+ DoFeaturesIntersect(whatToProfile,
+ ThreadProfilingFeatures::Sampling);
+ if (!threadCPUUtilization && !threadStackSampling) {
+ // Nothing to profile on this thread, continue with the next one.
+ continue;
+ }
+
+ const ProfilerThreadId threadId =
+ unlockedThreadData.Info().ThreadId();
+
+ const RunningTimes runningTimesDiff = [&]() {
+ if (!threadCPUUtilization) {
+ // If we don't need CPU measurements, we only need a timestamp.
+ return RunningTimes(TimeStamp::Now());
+ }
+ return GetThreadRunningTimesDiff(lock, unlockedThreadData);
+ }();
+
+ const TimeStamp& now = runningTimesDiff.PostMeasurementTimeStamp();
+ double threadSampleDeltaMs =
+ (now - CorePS::ProcessStartTime()).ToMilliseconds();
+
+ // If the thread is asleep and has been sampled before in the same
+ // sleep episode, or otherwise(*) if there was zero CPU activity
+ // since the previous sampling, find and copy the previous sample,
+ // as that's cheaper than taking a new sample.
+ // (*) Tech note: The asleep check is done first and always, because
+ // it is more reliable, and knows if it's the first asleep
+ // sample, which cannot be duplicated; if the test was the other
+ // way around, it could find zero CPU and then short-circuit
+ // that state-changing second-asleep-check operation, which
+ // could result in an unneeded sample.
+ // However we're using current running times (instead of copying the
+ // old ones) because some work could have happened.
+ if (threadStackSampling &&
+ (unlockedThreadData.CanDuplicateLastSampleDueToSleep() ||
+ runningTimesDiff.GetThreadCPUDelta() == Some(uint64_t(0)))) {
+ const bool dup_ok = ActivePS::Buffer(lock).DuplicateLastSample(
+ threadId, threadSampleDeltaMs,
+ profiledThreadData->LastSample(), runningTimesDiff);
+ if (dup_ok) {
+ continue;
+ }
+ }
+
+ AUTO_PROFILER_STATS(gecko_SamplerThread_Run_DoPeriodicSample);
+
+ // Record the global profiler buffer's range start now, before
+ // adding the first entry for this thread's sample.
+ const uint64_t bufferRangeStart = buffer.BufferRangeStart();
+
+ // Add the thread ID now, so we know its position in the main
+ // buffer, which is used by some JS data.
+ // (DoPeriodicSample only knows about the temporary local buffer.)
+ const uint64_t samplePos = buffer.AddThreadIdEntry(threadId);
+ profiledThreadData->LastSample() = Some(samplePos);
+
+ // Also add the time, so it's always there after the thread ID, as
+ // expected by the parser. (Other stack data is optional.)
+ buffer.AddEntry(ProfileBufferEntry::TimeBeforeCompactStack(
+ threadSampleDeltaMs));
+
+ Maybe<double> unresponsiveDuration_ms;
+
+ // If we have RunningTimes data, store it before the CompactStack.
+ // Note: It is not stored inside the CompactStack so that it doesn't
+ // get incorrectly duplicated when the thread is sleeping.
+ if (!runningTimesDiff.IsEmpty()) {
+ profiler_get_core_buffer().PutObjects(
+ ProfileBufferEntry::Kind::RunningTimes, runningTimesDiff);
+ }
+
+ if (threadStackSampling) {
+ ThreadRegistry::OffThreadRef::RWFromAnyThreadWithLock
+ lockedThreadData = offThreadRef.GetLockedRWFromAnyThread();
+ // Suspend the thread and collect its stack data in the local
+ // buffer.
+ mSampler.SuspendAndSampleAndResumeThread(
+ lock, lockedThreadData.DataCRef(), now,
+ [&](const Registers& aRegs, const TimeStamp& aNow) {
+ DoPeriodicSample(lock, lockedThreadData.DataCRef(), aRegs,
+ samplePos, bufferRangeStart,
+ localProfileBuffer);
+
+ // For "eventDelay", we want the input delay - but if
+ // there are no events in the input queue (or even if there
+ // are), we're interested in how long the delay *would* be
+ // for an input event now, which would be the time to finish
+ // the current event + the delay caused by any events
+ // already in the input queue (plus any High priority
+ // events). Events at lower priorities (in a
+ // PrioritizedEventQueue) than Input count for input delay
+ // only for the duration that they're running, since when
+ // they finish, any queued input event would run.
+ //
+ // Unless we record the time state of all events and queue
+ // states at all times, this is hard to precisely calculate,
+ // but we can approximate it well in post-processing with
+ // RunningEventDelay and RunningEventStart.
+ //
+ // RunningEventDelay is the time duration the event was
+ // queued before starting execution. RunningEventStart is
+ // the time the event started. (Note: since we care about
+ // Input event delays on MainThread, for
+ // PrioritizedEventQueues we return 0 for RunningEventDelay
+ // if the currently running event has a lower priority than
+ // Input (since Input events won't queue behind them).
+ //
+ // To directly measure this we would need to record the time
+ // at which the newest event currently in each queue at time
+ // X (the sample time) finishes running. This of course
+ // would require looking into the future, or recording all
+ // this state and then post-processing it later. If we were
+ // to trace every event start and end we could do this, but
+ // it would have significant overhead to do so (and buffer
+ // usage). From a recording of RunningEventDelays and
+ // RunningEventStarts we can infer the actual delay:
+ //
+ // clang-format off
+ // Event queue: <tail> D : C : B : A <head>
+ // Time inserted (ms): 40 : 20 : 10 : 0
+ // Run Time (ms): 30 : 100 : 40 : 30
+ //
+ // 0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170
+ // [A||||||||||||]
+ // ----------[B|||||||||||||||||]
+ // -------------------------[C|||||||||||||||||||||||||||||||||||||||||||||||]
+ // -----------------------------------------------------------------[D|||||||||...]
+ //
+ // Calculate the delay of a new event added at time t: (run every sample)
+ // TimeSinceRunningEventBlockedInputEvents = RunningEventDelay + (now - RunningEventStart);
+ // effective_submission = now - TimeSinceRunningEventBlockedInputEvents;
+ // delta = (now - last_sample_time);
+ // last_sample_time = now;
+ // for (t=effective_submission to now) {
+ // delay[t] += delta;
+ // }
+ //
+ // Can be reduced in overhead by:
+ // TimeSinceRunningEventBlockedInputEvents = RunningEventDelay + (now - RunningEventStart);
+ // effective_submission = now - TimeSinceRunningEventBlockedInputEvents;
+ // if (effective_submission != last_submission) {
+ // delta = (now - last_submision);
+ // // this loop should be made to match each sample point in the range
+ // // intead of assuming 1ms sampling as this pseudocode does
+ // for (t=last_submission to effective_submission-1) {
+ // delay[t] += delta;
+ // delta -= 1; // assumes 1ms; adjust as needed to match for()
+ // }
+ // last_submission = effective_submission;
+ // }
+ //
+ // Time Head of queue Running Event RunningEventDelay Delay of Effective Started Calc (submission->now add 10ms) Final
+ // hypothetical Submission Running @ result
+ // event E
+ // 0 Empty A 0 30 0 0 @0=10 30
+ // 10 B A 0 60 0 0 @0=20, @10=10 60
+ // 20 B A 0 150 0 0 @0=30, @10=20, @20=10 150
+ // 30 C B 20 140 10 30 @10=20, @20=10, @30=0 140
+ // 40 C B 20 160 @10=30, @20=20... 160
+ // 50 C B 20 150 150
+ // 60 C B 20 140 @10=50, @20=40... 140
+ // 70 D C 50 130 20 70 @20=50, @30=40... 130
+ // ...
+ // 160 D C 50 40 @20=140, @30=130... 40
+ // 170 <empty> D 140 30 40 @40=140, @50=130... (rounding) 30
+ // 180 <empty> D 140 20 40 @40=150 20
+ // 190 <empty> D 140 10 40 @40=160 10
+ // 200 <empty> <empty> 0 0 NA 0
+ //
+ // Function Delay(t) = the time between t and the time at which a hypothetical
+ // event e would start executing, if e was enqueued at time t.
+ //
+ // Delay(-1) = 0 // Before A was enqueued. No wait time, can start running
+ // // instantly.
+ // Delay(0) = 30 // The hypothetical event e got enqueued just after A got
+ // // enqueued. It can start running at 30, when A is done.
+ // Delay(5) = 25
+ // Delay(10) = 60 // Can start running at 70, after both A and B are done.
+ // Delay(19) = 51
+ // Delay(20) = 150 // Can start running at 170, after A, B & C.
+ // Delay(25) = 145
+ // Delay(30) = 170 // Can start running at 200, after A, B, C & D.
+ // Delay(120) = 80
+ // Delay(200) = 0 // (assuming nothing was enqueued after D)
+ //
+ // For every event that gets enqueued, the Delay time will go up by the
+ // event's running time at the time at which the event is enqueued.
+ // The Delay function will be a sawtooth of the following shape:
+ //
+ // |\ |...
+ // | \ |
+ // |\ | \ |
+ // | \ | \ |
+ // |\ | \ | \ |
+ // |\ | \| \| \ |
+ // | \| \ |
+ // _| \____|
+ //
+ //
+ // A more complex example with a PrioritizedEventQueue:
+ //
+ // Event queue: <tail> D : C : B : A <head>
+ // Time inserted (ms): 40 : 20 : 10 : 0
+ // Run Time (ms): 30 : 100 : 40 : 30
+ // Priority: Input: Norm: Norm: Norm
+ //
+ // 0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170
+ // [A||||||||||||]
+ // ----------[B|||||||||||||||||]
+ // ----------------------------------------[C|||||||||||||||||||||||||||||||||||||||||||||||]
+ // ---------------[D||||||||||||]
+ //
+ //
+ // Time Head of queue Running Event RunningEventDelay Delay of Effective Started Calc (submission->now add 10ms) Final
+ // hypothetical Submission Running @ result
+ // event
+ // 0 Empty A 0 30 0 0 @0=10 30
+ // 10 B A 0 20 0 0 @0=20, @10=10 20
+ // 20 B A 0 10 0 0 @0=30, @10=20, @20=10 10
+ // 30 C B 0 40 30 30 @30=10 40
+ // 40 C B 0 60 30 @40=10, @30=20 60
+ // 50 C B 0 50 30 @50=10, @40=20, @30=30 50
+ // 60 C B 0 40 30 @60=10, @50=20, @40=30, @30=40 40
+ // 70 C D 30 30 40 70 @60=20, @50=30, @40=40 30
+ // 80 C D 30 20 40 70 ...@50=40, @40=50 20
+ // 90 C D 30 10 40 70 ...@60=40, @50=50, @40=60 10
+ // 100 <empty> C 0 100 100 100 @100=10 100
+ // 110 <empty> C 0 90 100 100 @110=10, @100=20 90
+
+ //
+ // For PrioritizedEventQueue, the definition of the Delay(t) function is adjusted: the hypothetical event e has Input priority.
+ // Delay(-1) = 0 // Before A was enqueued. No wait time, can start running
+ // // instantly.
+ // Delay(0) = 30 // The hypothetical input event e got enqueued just after A got
+ // // enqueued. It can start running at 30, when A is done.
+ // Delay(5) = 25
+ // Delay(10) = 20
+ // Delay(25) = 5 // B has been queued, but e does not need to wait for B because e has Input priority and B does not.
+ // // So e can start running at 30, when A is done.
+ // Delay(30) = 40 // Can start running at 70, after B is done.
+ // Delay(40) = 60 // Can start at 100, after B and D are done (D is Input Priority)
+ // Delay(80) = 20
+ // Delay(100) = 100 // Wait for C to finish
+
+ // clang-format on
+ //
+ // Alternatively we could insert (recycled instead of
+ // allocated/freed) input events at every sample period
+ // (1ms...), and use them to back-calculate the delay. This
+ // might also be somewhat expensive, and would require
+ // guessing at the maximum delay, which would likely be in
+ // the seconds, and so you'd need 1000's of pre-allocated
+ // events per queue per thread - so there would be a memory
+ // impact as well.
+
+ TimeDuration currentEventDelay;
+ TimeDuration currentEventRunning;
+ lockedThreadData->GetRunningEventDelay(
+ aNow, currentEventDelay, currentEventRunning);
+
+ // Note: eventDelay is a different definition of
+ // responsiveness than the 16ms event injection.
+
+ // Don't suppress 0's for now; that can be a future
+ // optimization. We probably want one zero to be stored
+ // before we start suppressing, which would be more
+ // complex.
+ unresponsiveDuration_ms =
+ Some(currentEventDelay.ToMilliseconds() +
+ currentEventRunning.ToMilliseconds());
+ });
+
+ if (cpuUtilization) {
+ // Suspending the thread for sampling could have added some
+ // running time to it, discard any since the call to
+ // GetThreadRunningTimesDiff above.
+ DiscardSuspendedThreadRunningTimes(lock, unlockedThreadData);
+ }
+
+ // If we got eventDelay data, store it before the CompactStack.
+ // Note: It is not stored inside the CompactStack so that it
+ // doesn't get incorrectly duplicated when the thread is sleeping.
+ if (unresponsiveDuration_ms.isSome()) {
+ profiler_get_core_buffer().PutObjects(
+ ProfileBufferEntry::Kind::UnresponsiveDurationMs,
+ *unresponsiveDuration_ms);
+ }
+ }
+
+ // There *must* be a CompactStack after a TimeBeforeCompactStack;
+ // but note that other entries may have been concurrently inserted
+ // between the TimeBeforeCompactStack above and now. If the captured
+ // sample from `DoPeriodicSample` is complete, copy it into the
+ // global buffer, otherwise add an empty one to satisfy the parser
+ // that expects one.
+ auto state = localBuffer.GetState();
+ if (NS_WARN_IF(state.mFailedPutBytes !=
+ previousState.mFailedPutBytes)) {
+ LOG("Stack sample too big for local storage, failed to store %u "
+ "bytes",
+ unsigned(state.mFailedPutBytes -
+ previousState.mFailedPutBytes));
+ // There *must* be a CompactStack after a TimeBeforeCompactStack,
+ // even an empty one.
+ profiler_get_core_buffer().PutObjects(
+ ProfileBufferEntry::Kind::CompactStack,
+ UniquePtr<ProfileChunkedBuffer>(nullptr));
+ } else if (state.mRangeEnd - previousState.mRangeEnd >=
+ *profiler_get_core_buffer().BufferLength()) {
+ LOG("Stack sample too big for profiler storage, needed %u bytes",
+ unsigned(state.mRangeEnd - previousState.mRangeEnd));
+ // There *must* be a CompactStack after a TimeBeforeCompactStack,
+ // even an empty one.
+ profiler_get_core_buffer().PutObjects(
+ ProfileBufferEntry::Kind::CompactStack,
+ UniquePtr<ProfileChunkedBuffer>(nullptr));
+ } else {
+ profiler_get_core_buffer().PutObjects(
+ ProfileBufferEntry::Kind::CompactStack, localBuffer);
+ }
+
+ // Clean up for the next run.
+ localBuffer.Clear();
+ previousState = localBuffer.GetState();
+ }
+ } else {
+ samplingState = SamplingState::NoStackSamplingCompleted;
+ }
+
+#if defined(USE_LUL_STACKWALK)
+ // The LUL unwind object accumulates frame statistics. Periodically we
+ // should poke it to give it a chance to print those statistics. This
+ // involves doing I/O (fprintf, __android_log_print, etc.) and so
+ // can't safely be done from the critical section inside
+ // SuspendAndSampleAndResumeThread, which is why it is done here.
+ lul::LUL* lul = CorePS::Lul();
+ if (lul) {
+ lul->MaybeShowStats();
+ }
+#endif
+ TimeStamp threadsSampled = TimeStamp::Now();
+
+ {
+ AUTO_PROFILER_STATS(Sampler_FulfillChunkRequests);
+ ActivePS::FulfillChunkRequests(lock);
+ }
+
+ buffer.CollectOverheadStats(sampleStartDeltaMs,
+ lockAcquired - sampleStart,
+ expiredMarkersCleaned - lockAcquired,
+ countersSampled - expiredMarkersCleaned,
+ threadsSampled - countersSampled);
+ } else {
+ samplingState = SamplingState::SamplingPaused;
+ }
+ }
+ // gPSMutex is not held after this point.
+
+ // Invoke end-of-sampling callbacks outside of the locked scope.
+ InvokePostSamplingCallbacks(std::move(postSamplingCallbacks),
+ samplingState);
+
+ ProfilerChild::ProcessPendingUpdate();
+
+ if (ProfilerFeature::HasUnregisteredThreads(features)) {
+#if defined(GP_OS_windows)
+ {
+ MonitorAutoLock spyingStateLock{mSpyingStateMonitor};
+ switch (mSpyingState) {
+ case SpyingState::SamplerToSpy_Start:
+ case SpyingState::Spy_Working:
+ // If the spy is working (or about to work), record this loop
+ // iteration to delay the next start.
+ ++mDelaySpyStart;
+ break;
+ case SpyingState::Spy_Waiting:
+ // The Spy is idle, waiting for instructions. Should we delay?
+ if (--mDelaySpyStart <= 0) {
+ mDelaySpyStart = 0;
+ mSpyingState = SpyingState::SamplerToSpy_Start;
+ mSpyingStateMonitor.NotifyAll();
+ }
+ break;
+ default:
+ // Otherwise the spy should be initializing or shutting down.
+ MOZ_ASSERT(mSpyingState == SpyingState::Spy_Initializing ||
+ mSpyingState == SpyingState::MainToSpy_Shutdown ||
+ mSpyingState == SpyingState::SpyToMain_ShuttingDown);
+ break;
+ }
+ }
+#else
+ // On non-Windows platforms, this is fast enough to run in this thread,
+ // each sampling loop.
+ SpyOnUnregisteredThreads();
+#endif
+ }
+
+ // We expect the next sampling loop to start `sampleInterval` after this
+ // loop here was scheduled to start.
+ scheduledSampleStart += sampleInterval;
+
+ // Try to sleep until we reach that next scheduled time.
+ const TimeStamp beforeSleep = TimeStamp::Now();
+ if (scheduledSampleStart >= beforeSleep) {
+ // There is still time before the next scheduled sample time.
+ const uint32_t sleepTimeUs = static_cast<uint32_t>(
+ (scheduledSampleStart - beforeSleep).ToMicroseconds());
+ if (sleepTimeUs >= minimumIntervalSleepUs) {
+ SleepMicro(sleepTimeUs);
+ } else {
+ // If we're too close to that time, sleep the minimum amount of time.
+ // Note that the next scheduled start is not shifted, so at the end of
+ // the next loop, sleep may again be adjusted to get closer to schedule.
+ SleepMicro(minimumIntervalSleepUs);
+ }
+ } else {
+ // This sampling loop ended after the next sampling should have started!
+ // There is little point to try and keep up to schedule now, it would
+ // require more work, while it's likely we're late because the system is
+ // already busy. Try and restart a normal schedule from now.
+ scheduledSampleStart = beforeSleep + sampleInterval;
+ SleepMicro(static_cast<uint32_t>(sampleInterval.ToMicroseconds()));
+ }
+ }
+
+ // End of `while` loop. We can only be here from a `break` inside the loop.
+ InvokePostSamplingCallbacks(std::move(postSamplingCallbacks), samplingState);
+}
+
+namespace geckoprofiler::markers {
+
+struct UnregisteredThreadLifetimeMarker {
+ static constexpr Span<const char> MarkerTypeName() {
+ return MakeStringSpan("UnregisteredThreadLifetime");
+ }
+ static void StreamJSONMarkerData(baseprofiler::SpliceableJSONWriter& aWriter,
+ base::ProcessId aThreadId,
+ const ProfilerString8View& aName,
+ const ProfilerString8View& aEndEvent) {
+ aWriter.IntProperty("Thread Id", aThreadId);
+ aWriter.StringProperty("Thread Name", aName.Length() != 0
+ ? aName.AsSpan()
+ : MakeStringSpan("~Unnamed~"));
+ if (aEndEvent.Length() != 0) {
+ aWriter.StringProperty("End Event", aEndEvent);
+ }
+ }
+ static MarkerSchema MarkerTypeDisplay() {
+ using MS = MarkerSchema;
+ MS schema{MS::Location::MarkerChart, MS::Location::MarkerTable};
+ schema.AddKeyFormatSearchable("Thread Id", MS::Format::Integer,
+ MS::Searchable::Searchable);
+ schema.AddKeyFormatSearchable("Thread Name", MS::Format::String,
+ MS::Searchable::Searchable);
+ schema.AddKeyFormat("End Event", MS::Format::String);
+ schema.AddStaticLabelValue(
+ "Note",
+ "Start and end are approximate, based on first and last appearances.");
+ schema.SetChartLabel(
+ "{marker.data.Thread Name} (tid {marker.data.Thread Id})");
+ schema.SetTableLabel("{marker.name} lifetime");
+ return schema;
+ }
+};
+
+struct UnregisteredThreadCPUMarker {
+ static constexpr Span<const char> MarkerTypeName() {
+ return MakeStringSpan("UnregisteredThreadCPU");
+ }
+ static void StreamJSONMarkerData(baseprofiler::SpliceableJSONWriter& aWriter,
+ base::ProcessId aThreadId,
+ int64_t aCPUDiffNs, const TimeStamp& aStart,
+ const TimeStamp& aEnd) {
+ aWriter.IntProperty("Thread Id", aThreadId);
+ aWriter.IntProperty("CPU Time", aCPUDiffNs);
+ aWriter.DoubleProperty(
+ "CPU Utilization",
+ double(aCPUDiffNs) / ((aEnd - aStart).ToMicroseconds() * 1000.0));
+ }
+ static MarkerSchema MarkerTypeDisplay() {
+ using MS = MarkerSchema;
+ MS schema{MS::Location::MarkerChart, MS::Location::MarkerTable};
+ schema.AddKeyFormatSearchable("Thread Id", MS::Format::Integer,
+ MS::Searchable::Searchable);
+ schema.AddKeyFormat("CPU Time", MS::Format::Nanoseconds);
+ schema.AddKeyFormat("CPU Utilization", MS::Format::Percentage);
+ schema.SetChartLabel("{marker.data.CPU Utilization}");
+ schema.SetTableLabel(
+ "{marker.name} - Activity: {marker.data.CPU Utilization}");
+ return schema;
+ }
+};
+
+} // namespace geckoprofiler::markers
+
+static bool IsThreadIdRegistered(ProfilerThreadId aThreadId) {
+ ThreadRegistry::LockedRegistry lockedRegistry;
+ const auto registryEnd = lockedRegistry.end();
+ return std::find_if(
+ lockedRegistry.begin(), registryEnd,
+ [aThreadId](const ThreadRegistry::OffThreadRef& aOffThreadRef) {
+ return aOffThreadRef.UnlockedConstReaderCRef()
+ .Info()
+ .ThreadId() == aThreadId;
+ }) != registryEnd;
+}
+
+static nsAutoCString MakeThreadInfoMarkerName(base::ProcessId aThreadId,
+ const nsACString& aName) {
+ nsAutoCString markerName{"tid "};
+ markerName.AppendInt(int64_t(aThreadId));
+ if (!aName.IsEmpty()) {
+ markerName.AppendLiteral(" ");
+ markerName.Append(aName);
+ }
+ return markerName;
+}
+
+void SamplerThread::SpyOnUnregisteredThreads() {
+ const TimeStamp unregisteredThreadSearchStart = TimeStamp::Now();
+
+ const base::ProcessId currentProcessId =
+ base::ProcessId(profiler_current_process_id().ToNumber());
+ nsTArray<ProcInfoRequest> request(1);
+ request.EmplaceBack(
+ /* aPid = */ currentProcessId,
+ /* aProcessType = */ ProcType::Unknown,
+ /* aOrigin = */ ""_ns,
+ /* aWindowInfo = */ nsTArray<WindowInfo>{},
+ /* aUtilityInfo = */ nsTArray<UtilityInfo>{},
+ /* aChild = */ 0
+#ifdef XP_MACOSX
+ ,
+ /* aChildTask = */ MACH_PORT_NULL
+#endif // XP_MACOSX
+ );
+
+ const ProcInfoPromise::ResolveOrRejectValue procInfoOrError =
+ GetProcInfoSync(std::move(request));
+
+ if (!procInfoOrError.IsResolve()) {
+ PROFILER_MARKER_TEXT("Failed unregistered thread search", PROFILER,
+ MarkerOptions(MarkerThreadId::MainThread(),
+ MarkerTiming::IntervalUntilNowFrom(
+ unregisteredThreadSearchStart)),
+ "Could not retrieve any process information");
+ return;
+ }
+
+ const auto& procInfoHashMap = procInfoOrError.ResolveValue();
+ // Expecting the requested (current) process information to be present in the
+ // hashmap.
+ const auto& procInfoPtr =
+ procInfoHashMap.readonlyThreadsafeLookup(currentProcessId);
+ if (!procInfoPtr) {
+ PROFILER_MARKER_TEXT("Failed unregistered thread search", PROFILER,
+ MarkerOptions(MarkerThreadId::MainThread(),
+ MarkerTiming::IntervalUntilNowFrom(
+ unregisteredThreadSearchStart)),
+ "Could not retrieve information about this process");
+ return;
+ }
+
+ // Record the time spent so far, which is OS-bound...
+ PROFILER_MARKER_TEXT("Unregistered thread search", PROFILER,
+ MarkerOptions(MarkerThreadId::MainThread(),
+ MarkerTiming::IntervalUntilNowFrom(
+ unregisteredThreadSearchStart)),
+ "Work to discover threads");
+
+ // ... and record the time needed to process the data, which we can control.
+ AUTO_PROFILER_MARKER_TEXT(
+ "Unregistered thread search", PROFILER,
+ MarkerOptions(MarkerThreadId::MainThread()),
+ "Work to process discovered threads and record unregistered ones"_ns);
+
+ const Span<const mozilla::ThreadInfo> threads = procInfoPtr->value().threads;
+
+ // mLastSpying timestamp should be null only at the beginning of a session,
+ // when mSpiedThreads is still empty.
+ MOZ_ASSERT_IF(mLastSpying.IsNull(), mSpiedThreads.IsEmpty());
+
+ const TimeStamp previousSpying = std::exchange(mLastSpying, TimeStamp::Now());
+
+ // Find threads that were spied on but are not present anymore.
+ const auto threadsBegin = threads.begin();
+ const auto threadsEnd = threads.end();
+ for (size_t spiedThreadIndexPlus1 = mSpiedThreads.Length();
+ spiedThreadIndexPlus1 != 0; --spiedThreadIndexPlus1) {
+ const SpiedThread& spiedThread = mSpiedThreads[spiedThreadIndexPlus1 - 1];
+ if (std::find_if(threadsBegin, threadsEnd,
+ [spiedTid = spiedThread.mThreadId](
+ const mozilla::ThreadInfo& aThreadInfo) {
+ return aThreadInfo.tid == spiedTid;
+ }) == threadsEnd) {
+ // This spied thread is gone.
+ PROFILER_MARKER(
+ MakeThreadInfoMarkerName(spiedThread.mThreadId, spiedThread.mName),
+ PROFILER,
+ MarkerOptions(
+ MarkerThreadId::MainThread(),
+ // Place the end between this update and the previous one.
+ MarkerTiming::IntervalEnd(previousSpying +
+ (mLastSpying - previousSpying) /
+ int64_t(2))),
+ UnregisteredThreadLifetimeMarker, spiedThread.mThreadId,
+ spiedThread.mName, "Thread disappeared");
+
+ // Don't spy on it anymore, assuming it won't come back.
+ mSpiedThreads.RemoveElementAt(spiedThreadIndexPlus1 - 1);
+ }
+ }
+
+ for (const mozilla::ThreadInfo& threadInfo : threads) {
+ // Index of this encountered thread in mSpiedThreads, or NoIndex.
+ size_t spiedThreadIndex = mSpiedThreads.IndexOf(threadInfo.tid);
+ if (IsThreadIdRegistered(ProfilerThreadId::FromNumber(threadInfo.tid))) {
+ // This thread id is already officially registered.
+ if (spiedThreadIndex != SpiedThreads::NoIndex) {
+ // This now-registered thread was previously being spied.
+ SpiedThread& spiedThread = mSpiedThreads[spiedThreadIndex];
+ PROFILER_MARKER(
+ MakeThreadInfoMarkerName(spiedThread.mThreadId, spiedThread.mName),
+ PROFILER,
+ MarkerOptions(
+ MarkerThreadId::MainThread(),
+ // Place the end between this update and the previous one.
+ // TODO: Find the real time from the thread registration?
+ MarkerTiming::IntervalEnd(previousSpying +
+ (mLastSpying - previousSpying) /
+ int64_t(2))),
+ UnregisteredThreadLifetimeMarker, spiedThread.mThreadId,
+ spiedThread.mName, "Thread registered itself");
+
+ // Remove from mSpiedThreads, since it can be profiled normally.
+ mSpiedThreads.RemoveElement(threadInfo.tid);
+ }
+ } else {
+ // This thread id is not registered.
+ if (spiedThreadIndex == SpiedThreads::NoIndex) {
+ // This unregistered thread has not been spied yet, store it now.
+ NS_ConvertUTF16toUTF8 name(threadInfo.name);
+ mSpiedThreads.EmplaceBack(threadInfo.tid, name, threadInfo.cpuTime);
+
+ PROFILER_MARKER(
+ MakeThreadInfoMarkerName(threadInfo.tid, name), PROFILER,
+ MarkerOptions(
+ MarkerThreadId::MainThread(),
+ // Place the start between this update and the previous one (or
+ // the start of this search if it's the first one).
+ MarkerTiming::IntervalStart(
+ mLastSpying -
+ (mLastSpying - (previousSpying.IsNull()
+ ? unregisteredThreadSearchStart
+ : previousSpying)) /
+ int64_t(2))),
+ UnregisteredThreadLifetimeMarker, threadInfo.tid, name,
+ /* aEndEvent */ "");
+ } else {
+ // This unregistered thread was already being spied, record its work.
+ SpiedThread& spiedThread = mSpiedThreads[spiedThreadIndex];
+ int64_t diffCPUTimeNs =
+ int64_t(threadInfo.cpuTime) - int64_t(spiedThread.mCPUTimeNs);
+ spiedThread.mCPUTimeNs = threadInfo.cpuTime;
+ if (diffCPUTimeNs != 0) {
+ PROFILER_MARKER(
+ MakeThreadInfoMarkerName(threadInfo.tid, spiedThread.mName),
+ PROFILER,
+ MarkerOptions(
+ MarkerThreadId::MainThread(),
+ MarkerTiming::Interval(previousSpying, mLastSpying)),
+ UnregisteredThreadCPUMarker, threadInfo.tid, diffCPUTimeNs,
+ previousSpying, mLastSpying);
+ }
+ }
+ }
+ }
+
+ PROFILER_MARKER_TEXT("Unregistered thread search", PROFILER,
+ MarkerOptions(MarkerThreadId::MainThread(),
+ MarkerTiming::IntervalUntilNowFrom(
+ unregisteredThreadSearchStart)),
+ "Work to discover and record unregistered threads");
+}
+
+// We #include these files directly because it means those files can use
+// declarations from this file trivially. These provide target-specific
+// implementations of all SamplerThread methods except Run().
+#if defined(GP_OS_windows)
+# include "platform-win32.cpp"
+#elif defined(GP_OS_darwin)
+# include "platform-macos.cpp"
+#elif defined(GP_OS_linux) || defined(GP_OS_android) || defined(GP_OS_freebsd)
+# include "platform-linux-android.cpp"
+#else
+# error "bad platform"
+#endif
+
+// END SamplerThread
+////////////////////////////////////////////////////////////////////////
+
+////////////////////////////////////////////////////////////////////////
+// BEGIN externally visible functions
+
+MOZ_DEFINE_MALLOC_SIZE_OF(GeckoProfilerMallocSizeOf)
+
+NS_IMETHODIMP
+GeckoProfilerReporter::CollectReports(nsIHandleReportCallback* aHandleReport,
+ nsISupports* aData, bool aAnonymize) {
+ MOZ_RELEASE_ASSERT(NS_IsMainThread());
+
+ size_t profSize = 0;
+ size_t lulSize = 0;
+
+ {
+ PSAutoLock lock;
+
+ if (CorePS::Exists()) {
+ CorePS::AddSizeOf(lock, GeckoProfilerMallocSizeOf, profSize, lulSize);
+ }
+
+ if (ActivePS::Exists(lock)) {
+ profSize += ActivePS::SizeOf(lock, GeckoProfilerMallocSizeOf);
+ }
+ }
+
+ MOZ_COLLECT_REPORT(
+ "explicit/profiler/profiler-state", KIND_HEAP, UNITS_BYTES, profSize,
+ "Memory used by the Gecko Profiler's global state (excluding memory used "
+ "by LUL).");
+
+#if defined(USE_LUL_STACKWALK)
+ MOZ_COLLECT_REPORT(
+ "explicit/profiler/lul", KIND_HEAP, UNITS_BYTES, lulSize,
+ "Memory used by LUL, a stack unwinder used by the Gecko Profiler.");
+#endif
+
+ return NS_OK;
+}
+
+NS_IMPL_ISUPPORTS(GeckoProfilerReporter, nsIMemoryReporter)
+
+static uint32_t ParseFeature(const char* aFeature, bool aIsStartup) {
+ if (strcmp(aFeature, "default") == 0) {
+ return (aIsStartup ? (DefaultFeatures() | StartupExtraDefaultFeatures())
+ : DefaultFeatures()) &
+ AvailableFeatures();
+ }
+
+#define PARSE_FEATURE_BIT(n_, str_, Name_, desc_) \
+ if (strcmp(aFeature, str_) == 0) { \
+ return ProfilerFeature::Name_; \
+ }
+
+ PROFILER_FOR_EACH_FEATURE(PARSE_FEATURE_BIT)
+
+#undef PARSE_FEATURE_BIT
+
+ printf("\nUnrecognized feature \"%s\".\n\n", aFeature);
+ // Since we may have an old feature we don't implement anymore, don't exit.
+ PrintUsage();
+ return 0;
+}
+
+uint32_t ParseFeaturesFromStringArray(const char** aFeatures,
+ uint32_t aFeatureCount,
+ bool aIsStartup /* = false */) {
+ uint32_t features = 0;
+ for (size_t i = 0; i < aFeatureCount; i++) {
+ features |= ParseFeature(aFeatures[i], aIsStartup);
+ }
+ return features;
+}
+
+static ProfilingStack* locked_register_thread(
+ PSLockRef aLock, ThreadRegistry::OffThreadRef aOffThreadRef) {
+ MOZ_RELEASE_ASSERT(CorePS::Exists());
+
+ VTUNE_REGISTER_THREAD(aOffThreadRef.UnlockedConstReaderCRef().Info().Name());
+
+ if (ActivePS::Exists(aLock)) {
+ ThreadProfilingFeatures threadProfilingFeatures =
+ ActivePS::ProfilingFeaturesForThread(
+ aLock, aOffThreadRef.UnlockedConstReaderCRef().Info());
+ if (threadProfilingFeatures != ThreadProfilingFeatures::NotProfiled) {
+ ThreadRegistry::OffThreadRef::RWFromAnyThreadWithLock
+ lockedRWFromAnyThread = aOffThreadRef.GetLockedRWFromAnyThread();
+
+ ProfiledThreadData* profiledThreadData = ActivePS::AddLiveProfiledThread(
+ aLock, MakeUnique<ProfiledThreadData>(
+ aOffThreadRef.UnlockedConstReaderCRef().Info()));
+ lockedRWFromAnyThread->SetProfilingFeaturesAndData(
+ threadProfilingFeatures, profiledThreadData, aLock);
+
+ if (ActivePS::FeatureJS(aLock)) {
+ lockedRWFromAnyThread->StartJSSampling(ActivePS::JSFlags(aLock));
+ if (ThreadRegistration::LockedRWOnThread* lockedRWOnThread =
+ lockedRWFromAnyThread.GetLockedRWOnThread();
+ lockedRWOnThread) {
+ // We can manually poll the current thread so it starts sampling
+ // immediately.
+ lockedRWOnThread->PollJSSampling();
+ }
+ if (lockedRWFromAnyThread->GetJSContext()) {
+ profiledThreadData->NotifyReceivedJSContext(
+ ActivePS::Buffer(aLock).BufferRangeEnd());
+ }
+ }
+ }
+ }
+
+ return &aOffThreadRef.UnlockedConstReaderAndAtomicRWRef().ProfilingStackRef();
+}
+
+static void NotifyObservers(const char* aTopic,
+ nsISupports* aSubject = nullptr) {
+ if (!NS_IsMainThread()) {
+ // Dispatch a task to the main thread that notifies observers.
+ // If NotifyObservers is called both on and off the main thread within a
+ // short time, the order of the notifications can be different from the
+ // order of the calls to NotifyObservers.
+ // Getting the order 100% right isn't that important at the moment, because
+ // these notifications are only observed in the parent process, where the
+ // profiler_* functions are currently only called on the main thread.
+ nsCOMPtr<nsISupports> subject = aSubject;
+ NS_DispatchToMainThread(NS_NewRunnableFunction(
+ "NotifyObservers", [=] { NotifyObservers(aTopic, subject); }));
+ return;
+ }
+
+ if (nsCOMPtr<nsIObserverService> os = services::GetObserverService()) {
+ os->NotifyObservers(aSubject, aTopic, nullptr);
+ }
+}
+
+[[nodiscard]] static RefPtr<GenericPromise> NotifyProfilerStarted(
+ const PowerOfTwo32& aCapacity, const Maybe<double>& aDuration,
+ double aInterval, uint32_t aFeatures, const char** aFilters,
+ uint32_t aFilterCount, uint64_t aActiveTabID) {
+ nsTArray<nsCString> filtersArray;
+ for (size_t i = 0; i < aFilterCount; ++i) {
+ filtersArray.AppendElement(aFilters[i]);
+ }
+
+ nsCOMPtr<nsIProfilerStartParams> params = new nsProfilerStartParams(
+ aCapacity.Value(), aDuration, aInterval, aFeatures,
+ std::move(filtersArray), aActiveTabID);
+
+ RefPtr<GenericPromise> startPromise = ProfilerParent::ProfilerStarted(params);
+ NotifyObservers("profiler-started", params);
+ return startPromise;
+}
+
+static void locked_profiler_start(PSLockRef aLock, PowerOfTwo32 aCapacity,
+ double aInterval, uint32_t aFeatures,
+ const char** aFilters, uint32_t aFilterCount,
+ uint64_t aActiveTabID,
+ const Maybe<double>& aDuration);
+
+// This basically duplicates AutoProfilerLabel's constructor.
+static void* MozGlueLabelEnter(const char* aLabel, const char* aDynamicString,
+ void* aSp) {
+ ThreadRegistration::OnThreadPtr onThreadPtr =
+ ThreadRegistration::GetOnThreadPtr();
+ if (!onThreadPtr) {
+ return nullptr;
+ }
+ ProfilingStack& profilingStack =
+ onThreadPtr->UnlockedConstReaderAndAtomicRWRef().ProfilingStackRef();
+ profilingStack.pushLabelFrame(aLabel, aDynamicString, aSp,
+ JS::ProfilingCategoryPair::OTHER);
+ return &profilingStack;
+}
+
+// This basically duplicates AutoProfilerLabel's destructor.
+static void MozGlueLabelExit(void* aProfilingStack) {
+ if (aProfilingStack) {
+ reinterpret_cast<ProfilingStack*>(aProfilingStack)->pop();
+ }
+}
+
+static Vector<const char*> SplitAtCommas(const char* aString,
+ UniquePtr<char[]>& aStorage) {
+ size_t len = strlen(aString);
+ aStorage = MakeUnique<char[]>(len + 1);
+ PodCopy(aStorage.get(), aString, len + 1);
+
+ // Iterate over all characters in aStorage and split at commas, by
+ // overwriting commas with the null char.
+ Vector<const char*> array;
+ size_t currentElementStart = 0;
+ for (size_t i = 0; i <= len; i++) {
+ if (aStorage[i] == ',') {
+ aStorage[i] = '\0';
+ }
+ if (aStorage[i] == '\0') {
+ // Only add non-empty elements, otherwise ParseFeatures would later
+ // complain about unrecognized features.
+ if (currentElementStart != i) {
+ MOZ_RELEASE_ASSERT(array.append(&aStorage[currentElementStart]));
+ }
+ currentElementStart = i + 1;
+ }
+ }
+ return array;
+}
+
+void profiler_init_threadmanager() {
+ LOG("profiler_init_threadmanager");
+
+ ThreadRegistration::WithOnThreadRef(
+ [](ThreadRegistration::OnThreadRef aOnThreadRef) {
+ aOnThreadRef.WithLockedRWOnThread(
+ [](ThreadRegistration::LockedRWOnThread& aThreadData) {
+ if (!aThreadData.GetEventTarget()) {
+ aThreadData.ResetMainThread(NS_GetCurrentThreadNoCreate());
+ }
+ });
+ });
+}
+
+static const char* get_size_suffix(const char* str) {
+ const char* ptr = str;
+
+ while (isdigit(*ptr)) {
+ ptr++;
+ }
+
+ return ptr;
+}
+
+void profiler_init(void* aStackTop) {
+ LOG("profiler_init");
+
+ profiler_init_main_thread_id();
+
+ VTUNE_INIT();
+
+ MOZ_RELEASE_ASSERT(!CorePS::Exists());
+
+ if (getenv("MOZ_PROFILER_HELP")) {
+ PrintUsage();
+ exit(0);
+ }
+
+ SharedLibraryInfo::Initialize();
+
+ uint32_t features = DefaultFeatures() & AvailableFeatures();
+
+ UniquePtr<char[]> filterStorage;
+
+ Vector<const char*> filters;
+ MOZ_RELEASE_ASSERT(filters.append("GeckoMain"));
+ MOZ_RELEASE_ASSERT(filters.append("Compositor"));
+ MOZ_RELEASE_ASSERT(filters.append("Renderer"));
+ MOZ_RELEASE_ASSERT(filters.append("DOM Worker"));
+
+ PowerOfTwo32 capacity = PROFILER_DEFAULT_ENTRIES;
+ Maybe<double> duration = Nothing();
+ double interval = PROFILER_DEFAULT_INTERVAL;
+ uint64_t activeTabID = PROFILER_DEFAULT_ACTIVE_TAB_ID;
+
+ ThreadRegistration::RegisterThread(kMainThreadName, aStackTop);
+
+ {
+ PSAutoLock lock;
+
+ // We've passed the possible failure point. Instantiate CorePS, which
+ // indicates that the profiler has initialized successfully.
+ CorePS::Create(lock);
+
+ // Make sure threads already in the ThreadRegistry (like the main thread)
+ // get registered in CorePS as well.
+ {
+ ThreadRegistry::LockedRegistry lockedRegistry;
+ for (ThreadRegistry::OffThreadRef offThreadRef : lockedRegistry) {
+ locked_register_thread(lock, offThreadRef);
+ }
+ }
+
+ // Platform-specific initialization.
+ PlatformInit(lock);
+
+#if defined(GP_OS_android)
+ if (jni::IsAvailable()) {
+ GeckoJavaSampler::Init();
+ }
+#endif
+
+ // (Linux-only) We could create CorePS::mLul and read unwind info into it
+ // at this point. That would match the lifetime implied by destruction of
+ // it in profiler_shutdown() just below. However, that gives a big delay on
+ // startup, even if no profiling is actually to be done. So, instead, it is
+ // created on demand at the first call to PlatformStart().
+
+ const char* startupEnv = getenv("MOZ_PROFILER_STARTUP");
+ if (!startupEnv || startupEnv[0] == '\0' ||
+ ((startupEnv[0] == '0' || startupEnv[0] == 'N' ||
+ startupEnv[0] == 'n') &&
+ startupEnv[1] == '\0')) {
+ return;
+ }
+
+ LOG("- MOZ_PROFILER_STARTUP is set");
+
+ // Startup default capacity may be different.
+ capacity = PROFILER_DEFAULT_STARTUP_ENTRIES;
+
+ const char* startupCapacity = getenv("MOZ_PROFILER_STARTUP_ENTRIES");
+ if (startupCapacity && startupCapacity[0] != '\0') {
+ errno = 0;
+ long capacityLong = strtol(startupCapacity, nullptr, 10);
+ std::string_view sizeSuffix = get_size_suffix(startupCapacity);
+
+ if (sizeSuffix == "KB") {
+ capacityLong *= 1000 / scBytesPerEntry;
+ } else if (sizeSuffix == "KiB") {
+ capacityLong *= 1024 / scBytesPerEntry;
+ } else if (sizeSuffix == "MB") {
+ capacityLong *= (1000 * 1000) / scBytesPerEntry;
+ } else if (sizeSuffix == "MiB") {
+ capacityLong *= (1024 * 1024) / scBytesPerEntry;
+ } else if (sizeSuffix == "GB") {
+ capacityLong *= (1000 * 1000 * 1000) / scBytesPerEntry;
+ } else if (sizeSuffix == "GiB") {
+ capacityLong *= (1024 * 1024 * 1024) / scBytesPerEntry;
+ } else if (!sizeSuffix.empty()) {
+ LOG("- MOZ_PROFILER_STARTUP_ENTRIES unit must be one of the "
+ "following: KB, KiB, MB, MiB, GB, GiB");
+ PrintUsage();
+ exit(1);
+ }
+
+ // `long` could be 32 or 64 bits, so we force a 64-bit comparison with
+ // the maximum 32-bit signed number (as more than that is clamped down to
+ // 2^31 anyway).
+ if (errno == 0 && capacityLong > 0 &&
+ static_cast<uint64_t>(capacityLong) <=
+ static_cast<uint64_t>(INT32_MAX)) {
+ capacity = PowerOfTwo32(ActivePS::ClampToAllowedEntries(
+ static_cast<uint32_t>(capacityLong)));
+ LOG("- MOZ_PROFILER_STARTUP_ENTRIES = %u", unsigned(capacity.Value()));
+ } else {
+ LOG("- MOZ_PROFILER_STARTUP_ENTRIES not a valid integer: %s",
+ startupCapacity);
+ PrintUsage();
+ exit(1);
+ }
+ }
+
+ const char* startupDuration = getenv("MOZ_PROFILER_STARTUP_DURATION");
+ if (startupDuration && startupDuration[0] != '\0') {
+ errno = 0;
+ double durationVal = PR_strtod(startupDuration, nullptr);
+ if (errno == 0 && durationVal >= 0.0) {
+ if (durationVal > 0.0) {
+ duration = Some(durationVal);
+ }
+ LOG("- MOZ_PROFILER_STARTUP_DURATION = %f", durationVal);
+ } else {
+ LOG("- MOZ_PROFILER_STARTUP_DURATION not a valid float: %s",
+ startupDuration);
+ PrintUsage();
+ exit(1);
+ }
+ }
+
+ const char* startupInterval = getenv("MOZ_PROFILER_STARTUP_INTERVAL");
+ if (startupInterval && startupInterval[0] != '\0') {
+ errno = 0;
+ interval = PR_strtod(startupInterval, nullptr);
+ if (errno == 0 && interval > 0.0 && interval <= PROFILER_MAX_INTERVAL) {
+ LOG("- MOZ_PROFILER_STARTUP_INTERVAL = %f", interval);
+ } else {
+ LOG("- MOZ_PROFILER_STARTUP_INTERVAL not a valid float: %s",
+ startupInterval);
+ PrintUsage();
+ exit(1);
+ }
+ }
+
+ features |= StartupExtraDefaultFeatures() & AvailableFeatures();
+
+ const char* startupFeaturesBitfield =
+ getenv("MOZ_PROFILER_STARTUP_FEATURES_BITFIELD");
+ if (startupFeaturesBitfield && startupFeaturesBitfield[0] != '\0') {
+ errno = 0;
+ features = strtol(startupFeaturesBitfield, nullptr, 10);
+ if (errno == 0) {
+ LOG("- MOZ_PROFILER_STARTUP_FEATURES_BITFIELD = %d", features);
+ } else {
+ LOG("- MOZ_PROFILER_STARTUP_FEATURES_BITFIELD not a valid integer: %s",
+ startupFeaturesBitfield);
+ PrintUsage();
+ exit(1);
+ }
+ } else {
+ const char* startupFeatures = getenv("MOZ_PROFILER_STARTUP_FEATURES");
+ if (startupFeatures) {
+ // Interpret startupFeatures as a list of feature strings, separated by
+ // commas.
+ UniquePtr<char[]> featureStringStorage;
+ Vector<const char*> featureStringArray =
+ SplitAtCommas(startupFeatures, featureStringStorage);
+ features = ParseFeaturesFromStringArray(featureStringArray.begin(),
+ featureStringArray.length(),
+ /* aIsStartup */ true);
+ LOG("- MOZ_PROFILER_STARTUP_FEATURES = %d", features);
+ }
+ }
+
+ const char* startupFilters = getenv("MOZ_PROFILER_STARTUP_FILTERS");
+ if (startupFilters && startupFilters[0] != '\0') {
+ filters = SplitAtCommas(startupFilters, filterStorage);
+ LOG("- MOZ_PROFILER_STARTUP_FILTERS = %s", startupFilters);
+
+ if (mozilla::profiler::detail::FiltersExcludePid(filters)) {
+ LOG(" -> This process is excluded and won't be profiled");
+ return;
+ }
+ }
+
+ const char* startupActiveTabID =
+ getenv("MOZ_PROFILER_STARTUP_ACTIVE_TAB_ID");
+ if (startupActiveTabID && startupActiveTabID[0] != '\0') {
+ std::istringstream iss(startupActiveTabID);
+ iss >> activeTabID;
+ if (!iss.fail()) {
+ LOG("- MOZ_PROFILER_STARTUP_ACTIVE_TAB_ID = %" PRIu64, activeTabID);
+ } else {
+ LOG("- MOZ_PROFILER_STARTUP_ACTIVE_TAB_ID not a valid "
+ "uint64_t: %s",
+ startupActiveTabID);
+ PrintUsage();
+ exit(1);
+ }
+ }
+
+ locked_profiler_start(lock, capacity, interval, features, filters.begin(),
+ filters.length(), activeTabID, duration);
+ }
+
+ // The GeckoMain thread registration happened too early to record a marker,
+ // so let's record it again now.
+ profiler_mark_thread_awake();
+
+#if defined(MOZ_REPLACE_MALLOC) && defined(MOZ_PROFILER_MEMORY)
+ // Start counting memory allocations (outside of lock because this may call
+ // profiler_add_sampled_counter which would attempt to take the lock.)
+ ActivePS::SetMemoryCounter(mozilla::profiler::install_memory_hooks());
+#endif
+
+ invoke_profiler_state_change_callbacks(ProfilingState::Started);
+
+ // We do this with gPSMutex unlocked. The comment in profiler_stop() explains
+ // why.
+ Unused << NotifyProfilerStarted(capacity, duration, interval, features,
+ filters.begin(), filters.length(), 0);
+}
+
+static void locked_profiler_save_profile_to_file(
+ PSLockRef aLock, const char* aFilename,
+ const PreRecordedMetaInformation& aPreRecordedMetaInformation,
+ bool aIsShuttingDown);
+
+static SamplerThread* locked_profiler_stop(PSLockRef aLock);
+
+void profiler_shutdown(IsFastShutdown aIsFastShutdown) {
+ LOG("profiler_shutdown");
+
+ VTUNE_SHUTDOWN();
+
+ MOZ_RELEASE_ASSERT(NS_IsMainThread());
+ MOZ_RELEASE_ASSERT(CorePS::Exists());
+
+ if (profiler_is_active()) {
+ invoke_profiler_state_change_callbacks(ProfilingState::Stopping);
+ }
+ invoke_profiler_state_change_callbacks(ProfilingState::ShuttingDown);
+
+ const auto preRecordedMetaInformation = PreRecordMetaInformation();
+
+ ProfilerParent::ProfilerWillStopIfStarted();
+
+ // If the profiler is active we must get a handle to the SamplerThread before
+ // ActivePS is destroyed, in order to delete it.
+ SamplerThread* samplerThread = nullptr;
+ {
+ PSAutoLock lock;
+
+ // Save the profile on shutdown if requested.
+ if (ActivePS::Exists(lock)) {
+ const char* filename = getenv("MOZ_PROFILER_SHUTDOWN");
+ if (filename && filename[0] != '\0') {
+ locked_profiler_save_profile_to_file(lock, filename,
+ preRecordedMetaInformation,
+ /* aIsShuttingDown */ true);
+ }
+ if (aIsFastShutdown == IsFastShutdown::Yes) {
+ return;
+ }
+
+ samplerThread = locked_profiler_stop(lock);
+ } else if (aIsFastShutdown == IsFastShutdown::Yes) {
+ return;
+ }
+
+ CorePS::Destroy(lock);
+ }
+
+ // We do these operations with gPSMutex unlocked. The comments in
+ // profiler_stop() explain why.
+ if (samplerThread) {
+ Unused << ProfilerParent::ProfilerStopped();
+ NotifyObservers("profiler-stopped");
+ delete samplerThread;
+ }
+
+ // Reverse the registration done in profiler_init.
+ ThreadRegistration::UnregisterThread();
+}
+
+static bool WriteProfileToJSONWriter(SpliceableChunkedJSONWriter& aWriter,
+ double aSinceTime, bool aIsShuttingDown,
+ ProfilerCodeAddressService* aService,
+ mozilla::ProgressLogger aProgressLogger) {
+ LOG("WriteProfileToJSONWriter");
+
+ MOZ_RELEASE_ASSERT(CorePS::Exists());
+
+ aWriter.Start();
+ {
+ auto rv = profiler_stream_json_for_this_process(
+ aWriter, aSinceTime, aIsShuttingDown, aService,
+ aProgressLogger.CreateSubLoggerFromTo(
+ 0_pc,
+ "WriteProfileToJSONWriter: "
+ "profiler_stream_json_for_this_process started",
+ 100_pc,
+ "WriteProfileToJSONWriter: "
+ "profiler_stream_json_for_this_process done"));
+
+ if (rv.isErr()) {
+ return false;
+ }
+
+ // Don't include profiles from other processes because this is a
+ // synchronous function.
+ aWriter.StartArrayProperty("processes");
+ aWriter.EndArray();
+ }
+ aWriter.End();
+ return !aWriter.Failed();
+}
+
+void profiler_set_process_name(const nsACString& aProcessName,
+ const nsACString* aETLDplus1) {
+ LOG("profiler_set_process_name(\"%s\", \"%s\")", aProcessName.Data(),
+ aETLDplus1 ? aETLDplus1->Data() : "<none>");
+ PSAutoLock lock;
+ CorePS::SetProcessName(lock, aProcessName);
+ if (aETLDplus1) {
+ CorePS::SetETLDplus1(lock, *aETLDplus1);
+ }
+}
+
+UniquePtr<char[]> profiler_get_profile(double aSinceTime,
+ bool aIsShuttingDown) {
+ LOG("profiler_get_profile");
+
+ UniquePtr<ProfilerCodeAddressService> service =
+ profiler_code_address_service_for_presymbolication();
+
+ FailureLatchSource failureLatch;
+ SpliceableChunkedJSONWriter b{failureLatch};
+ if (!WriteProfileToJSONWriter(b, aSinceTime, aIsShuttingDown, service.get(),
+ ProgressLogger{})) {
+ return nullptr;
+ }
+ return b.ChunkedWriteFunc().CopyData();
+}
+
+[[nodiscard]] bool profiler_get_profile_json(
+ SpliceableChunkedJSONWriter& aSpliceableChunkedJSONWriter,
+ double aSinceTime, bool aIsShuttingDown,
+ mozilla::ProgressLogger aProgressLogger) {
+ LOG("profiler_get_profile_json");
+
+ UniquePtr<ProfilerCodeAddressService> service =
+ profiler_code_address_service_for_presymbolication();
+
+ return WriteProfileToJSONWriter(
+ aSpliceableChunkedJSONWriter, aSinceTime, aIsShuttingDown, service.get(),
+ aProgressLogger.CreateSubLoggerFromTo(
+ 0.1_pc, "profiler_get_profile_json: WriteProfileToJSONWriter started",
+ 99.9_pc, "profiler_get_profile_json: WriteProfileToJSONWriter done"));
+}
+
+void profiler_get_start_params(int* aCapacity, Maybe<double>* aDuration,
+ double* aInterval, uint32_t* aFeatures,
+ Vector<const char*>* aFilters,
+ uint64_t* aActiveTabID) {
+ MOZ_RELEASE_ASSERT(CorePS::Exists());
+
+ if (NS_WARN_IF(!aCapacity) || NS_WARN_IF(!aDuration) ||
+ NS_WARN_IF(!aInterval) || NS_WARN_IF(!aFeatures) ||
+ NS_WARN_IF(!aFilters)) {
+ return;
+ }
+
+ PSAutoLock lock;
+
+ if (!ActivePS::Exists(lock)) {
+ *aCapacity = 0;
+ *aDuration = Nothing();
+ *aInterval = 0;
+ *aFeatures = 0;
+ *aActiveTabID = 0;
+ aFilters->clear();
+ return;
+ }
+
+ *aCapacity = ActivePS::Capacity(lock).Value();
+ *aDuration = ActivePS::Duration(lock);
+ *aInterval = ActivePS::Interval(lock);
+ *aFeatures = ActivePS::Features(lock);
+ *aActiveTabID = ActivePS::ActiveTabID(lock);
+
+ const Vector<std::string>& filters = ActivePS::Filters(lock);
+ MOZ_ALWAYS_TRUE(aFilters->resize(filters.length()));
+ for (uint32_t i = 0; i < filters.length(); ++i) {
+ (*aFilters)[i] = filters[i].c_str();
+ }
+}
+
+ProfileBufferControlledChunkManager* profiler_get_controlled_chunk_manager() {
+ MOZ_RELEASE_ASSERT(CorePS::Exists());
+ PSAutoLock lock;
+ if (NS_WARN_IF(!ActivePS::Exists(lock))) {
+ return nullptr;
+ }
+ return &ActivePS::ControlledChunkManager(lock);
+}
+
+namespace mozilla {
+
+void GetProfilerEnvVarsForChildProcess(
+ std::function<void(const char* key, const char* value)>&& aSetEnv) {
+ MOZ_RELEASE_ASSERT(CorePS::Exists());
+
+ PSAutoLock lock;
+
+ if (!ActivePS::Exists(lock)) {
+ aSetEnv("MOZ_PROFILER_STARTUP", "");
+ return;
+ }
+
+ aSetEnv("MOZ_PROFILER_STARTUP", "1");
+
+ // If MOZ_PROFILER_SHUTDOWN is defined, make sure it's empty in children, so
+ // that they don't attempt to write over that file.
+ if (getenv("MOZ_PROFILER_SHUTDOWN")) {
+ aSetEnv("MOZ_PROFILER_SHUTDOWN", "");
+ }
+
+ // Hidden option to stop Base Profiler, mostly due to Talos intermittents,
+ // see https://bugzilla.mozilla.org/show_bug.cgi?id=1638851#c3
+ // TODO: Investigate root cause and remove this in bugs 1648324 and 1648325.
+ if (getenv("MOZ_PROFILER_STARTUP_NO_BASE")) {
+ aSetEnv("MOZ_PROFILER_STARTUP_NO_BASE", "1");
+ }
+
+ auto capacityString =
+ Smprintf("%u", unsigned(ActivePS::Capacity(lock).Value()));
+ aSetEnv("MOZ_PROFILER_STARTUP_ENTRIES", capacityString.get());
+
+ // Use AppendFloat instead of Smprintf with %f because the decimal
+ // separator used by %f is locale-dependent. But the string we produce needs
+ // to be parseable by strtod, which only accepts the period character as a
+ // decimal separator. AppendFloat always uses the period character.
+ nsCString intervalString;
+ intervalString.AppendFloat(ActivePS::Interval(lock));
+ aSetEnv("MOZ_PROFILER_STARTUP_INTERVAL", intervalString.get());
+
+ auto featuresString = Smprintf("%d", ActivePS::Features(lock));
+ aSetEnv("MOZ_PROFILER_STARTUP_FEATURES_BITFIELD", featuresString.get());
+
+ std::string filtersString;
+ const Vector<std::string>& filters = ActivePS::Filters(lock);
+ for (uint32_t i = 0; i < filters.length(); ++i) {
+ if (i != 0) {
+ filtersString += ",";
+ }
+ filtersString += filters[i];
+ }
+ aSetEnv("MOZ_PROFILER_STARTUP_FILTERS", filtersString.c_str());
+
+ auto activeTabIDString = Smprintf("%" PRIu64, ActivePS::ActiveTabID(lock));
+ aSetEnv("MOZ_PROFILER_STARTUP_ACTIVE_TAB_ID", activeTabIDString.get());
+}
+
+} // namespace mozilla
+
+void profiler_received_exit_profile(const nsACString& aExitProfile) {
+ MOZ_RELEASE_ASSERT(NS_IsMainThread());
+ MOZ_RELEASE_ASSERT(CorePS::Exists());
+ PSAutoLock lock;
+ if (!ActivePS::Exists(lock)) {
+ return;
+ }
+ ActivePS::AddExitProfile(lock, aExitProfile);
+}
+
+Vector<nsCString> profiler_move_exit_profiles() {
+ MOZ_RELEASE_ASSERT(CorePS::Exists());
+ PSAutoLock lock;
+ Vector<nsCString> profiles;
+ if (ActivePS::Exists(lock)) {
+ profiles = ActivePS::MoveExitProfiles(lock);
+ }
+ return profiles;
+}
+
+static void locked_profiler_save_profile_to_file(
+ PSLockRef aLock, const char* aFilename,
+ const PreRecordedMetaInformation& aPreRecordedMetaInformation,
+ bool aIsShuttingDown = false) {
+ nsAutoCString processedFilename(aFilename);
+ const auto processInsertionIndex = processedFilename.Find("%p");
+ if (processInsertionIndex != kNotFound) {
+ // Replace "%p" with the process id.
+ nsAutoCString process;
+ process.AppendInt(profiler_current_process_id().ToNumber());
+ processedFilename.Replace(processInsertionIndex, 2, process);
+ LOG("locked_profiler_save_profile_to_file(\"%s\" -> \"%s\")", aFilename,
+ processedFilename.get());
+ } else {
+ LOG("locked_profiler_save_profile_to_file(\"%s\")", aFilename);
+ }
+
+ MOZ_RELEASE_ASSERT(CorePS::Exists() && ActivePS::Exists(aLock));
+
+ std::ofstream stream;
+ stream.open(processedFilename.get());
+ if (stream.is_open()) {
+ OStreamJSONWriteFunc sw(stream);
+ SpliceableJSONWriter w(sw, FailureLatchInfallibleSource::Singleton());
+ w.Start();
+ {
+ Unused << locked_profiler_stream_json_for_this_process(
+ aLock, w, /* sinceTime */ 0, aPreRecordedMetaInformation,
+ aIsShuttingDown, nullptr, ProgressLogger{});
+
+ w.StartArrayProperty("processes");
+ Vector<nsCString> exitProfiles = ActivePS::MoveExitProfiles(aLock);
+ for (auto& exitProfile : exitProfiles) {
+ if (!exitProfile.IsEmpty() && exitProfile[0] != '*') {
+ w.Splice(exitProfile);
+ }
+ }
+ w.EndArray();
+ }
+ w.End();
+
+ stream.close();
+ }
+}
+
+void profiler_save_profile_to_file(const char* aFilename) {
+ LOG("profiler_save_profile_to_file(%s)", aFilename);
+
+ MOZ_RELEASE_ASSERT(CorePS::Exists());
+
+ const auto preRecordedMetaInformation = PreRecordMetaInformation();
+
+ PSAutoLock lock;
+
+ if (!ActivePS::Exists(lock)) {
+ return;
+ }
+
+ locked_profiler_save_profile_to_file(lock, aFilename,
+ preRecordedMetaInformation);
+}
+
+uint32_t profiler_get_available_features() {
+ MOZ_RELEASE_ASSERT(CorePS::Exists());
+ return AvailableFeatures();
+}
+
+Maybe<ProfilerBufferInfo> profiler_get_buffer_info() {
+ MOZ_RELEASE_ASSERT(CorePS::Exists());
+
+ PSAutoLock lock;
+
+ if (!ActivePS::Exists(lock)) {
+ return Nothing();
+ }
+
+ return Some(ActivePS::Buffer(lock).GetProfilerBufferInfo());
+}
+
+static void PollJSSamplingForCurrentThread() {
+ ThreadRegistration::WithOnThreadRef(
+ [](ThreadRegistration::OnThreadRef aOnThreadRef) {
+ aOnThreadRef.WithLockedRWOnThread(
+ [](ThreadRegistration::LockedRWOnThread& aThreadData) {
+ aThreadData.PollJSSampling();
+ });
+ });
+}
+
+// When the profiler is started on a background thread, we can't synchronously
+// call PollJSSampling on the main thread's ThreadInfo. And the next regular
+// call to PollJSSampling on the main thread would only happen once the main
+// thread triggers a JS interrupt callback.
+// This means that all the JS execution between profiler_start() and the first
+// JS interrupt would happen with JS sampling disabled, and we wouldn't get any
+// JS function information for that period of time.
+// So in order to start JS sampling as soon as possible, we dispatch a runnable
+// to the main thread which manually calls PollJSSamplingForCurrentThread().
+// In some cases this runnable will lose the race with the next JS interrupt.
+// That's fine; PollJSSamplingForCurrentThread() is immune to redundant calls.
+static void TriggerPollJSSamplingOnMainThread() {
+ nsCOMPtr<nsIThread> mainThread;
+ nsresult rv = NS_GetMainThread(getter_AddRefs(mainThread));
+ if (NS_SUCCEEDED(rv) && mainThread) {
+ nsCOMPtr<nsIRunnable> task =
+ NS_NewRunnableFunction("TriggerPollJSSamplingOnMainThread",
+ []() { PollJSSamplingForCurrentThread(); });
+ SchedulerGroup::Dispatch(TaskCategory::Other, task.forget());
+ }
+}
+
+static void locked_profiler_start(PSLockRef aLock, PowerOfTwo32 aCapacity,
+ double aInterval, uint32_t aFeatures,
+ const char** aFilters, uint32_t aFilterCount,
+ uint64_t aActiveTabID,
+ const Maybe<double>& aDuration) {
+ TimeStamp profilingStartTime = TimeStamp::Now();
+
+ if (LOG_TEST) {
+ LOG("locked_profiler_start");
+ LOG("- capacity = %u", unsigned(aCapacity.Value()));
+ LOG("- duration = %.2f", aDuration ? *aDuration : -1);
+ LOG("- interval = %.2f", aInterval);
+ LOG("- tab ID = %" PRIu64, aActiveTabID);
+
+#define LOG_FEATURE(n_, str_, Name_, desc_) \
+ if (ProfilerFeature::Has##Name_(aFeatures)) { \
+ LOG("- feature = %s", str_); \
+ }
+
+ PROFILER_FOR_EACH_FEATURE(LOG_FEATURE)
+
+#undef LOG_FEATURE
+
+ for (uint32_t i = 0; i < aFilterCount; i++) {
+ LOG("- threads = %s", aFilters[i]);
+ }
+ }
+
+ MOZ_RELEASE_ASSERT(CorePS::Exists() && !ActivePS::Exists(aLock));
+
+ // Do this before the Base Profiler is stopped, to keep the existing buffer
+ // (if any) alive for our use.
+ if (NS_IsMainThread()) {
+ mozilla::base_profiler_markers_detail::EnsureBufferForMainThreadAddMarker();
+ } else {
+ NS_DispatchToMainThread(
+ NS_NewRunnableFunction("EnsureBufferForMainThreadAddMarker",
+ &mozilla::base_profiler_markers_detail::
+ EnsureBufferForMainThreadAddMarker));
+ }
+
+ UniquePtr<ProfileBufferChunkManagerWithLocalLimit> baseChunkManager;
+ bool profilersHandOver = false;
+ if (baseprofiler::profiler_is_active()) {
+ // Note that we still hold the lock, so the sampler cannot run yet and
+ // interact negatively with the still-active BaseProfiler sampler.
+ // Assume that Base Profiler is active because of MOZ_PROFILER_STARTUP.
+
+ // Take ownership of the chunk manager from the Base Profiler, to extend its
+ // lifetime during the new Gecko Profiler session. Since we're using the
+ // same core buffer, all the base profiler data remains.
+ baseChunkManager = baseprofiler::detail::ExtractBaseProfilerChunkManager();
+
+ if (baseChunkManager) {
+ profilersHandOver = true;
+ if (const TimeStamp baseProfilingStartTime =
+ baseprofiler::detail::GetProfilingStartTime();
+ !baseProfilingStartTime.IsNull()) {
+ profilingStartTime = baseProfilingStartTime;
+ }
+
+ BASE_PROFILER_MARKER_TEXT(
+ "Profilers handover", PROFILER, MarkerTiming::IntervalStart(),
+ "Transition from Base to Gecko Profiler, some data may be missing");
+ }
+
+ // Now stop Base Profiler (BP), as further recording will be ignored anyway,
+ // and so that it won't clash with Gecko Profiler (GP) sampling starting
+ // after the lock is dropped.
+ // On Linux this is especially important to do before creating the GP
+ // sampler, because the BP sampler may send a signal (to stop threads to be
+ // sampled), which the GP would intercept before its own initialization is
+ // complete and ready to handle such signals.
+ // Note that even though `profiler_stop()` doesn't immediately destroy and
+ // join the sampler thread, it safely deactivates it in such a way that the
+ // thread will soon exit without doing any actual work.
+ // TODO: Allow non-sampling profiling to continue.
+ // TODO: Re-start BP after GP shutdown, to capture post-XPCOM shutdown.
+ baseprofiler::profiler_stop();
+ }
+
+#if defined(GP_PLAT_amd64_windows)
+ InitializeWin64ProfilerHooks();
+#endif
+
+ // Fall back to the default values if the passed-in values are unreasonable.
+ // We want to be able to store at least one full stack.
+ PowerOfTwo32 capacity =
+ (aCapacity.Value() >=
+ ProfileBufferChunkManager::scExpectedMaximumStackSize / scBytesPerEntry)
+ ? aCapacity
+ : PROFILER_DEFAULT_ENTRIES;
+ Maybe<double> duration = aDuration;
+
+ if (aDuration && *aDuration <= 0) {
+ duration = Nothing();
+ }
+
+ double interval = aInterval > 0 ? aInterval : PROFILER_DEFAULT_INTERVAL;
+
+ ActivePS::Create(aLock, profilingStartTime, capacity, interval, aFeatures,
+ aFilters, aFilterCount, aActiveTabID, duration,
+ std::move(baseChunkManager));
+
+ // ActivePS::Create can only succeed or crash.
+ MOZ_ASSERT(ActivePS::Exists(aLock));
+
+ // Set up profiling for each registered thread, if appropriate.
+#if defined(MOZ_REPLACE_MALLOC) && defined(MOZ_PROFILER_MEMORY)
+ bool isMainThreadBeingProfiled = false;
+#endif
+ ThreadRegistry::LockedRegistry lockedRegistry;
+ for (ThreadRegistry::OffThreadRef offThreadRef : lockedRegistry) {
+ const ThreadRegistrationInfo& info =
+ offThreadRef.UnlockedConstReaderCRef().Info();
+
+ ThreadProfilingFeatures threadProfilingFeatures =
+ ActivePS::ProfilingFeaturesForThread(aLock, info);
+ if (threadProfilingFeatures != ThreadProfilingFeatures::NotProfiled) {
+ ThreadRegistry::OffThreadRef::RWFromAnyThreadWithLock lockedThreadData =
+ offThreadRef.GetLockedRWFromAnyThread();
+ ProfiledThreadData* profiledThreadData = ActivePS::AddLiveProfiledThread(
+ aLock, MakeUnique<ProfiledThreadData>(info));
+ lockedThreadData->SetProfilingFeaturesAndData(threadProfilingFeatures,
+ profiledThreadData, aLock);
+ lockedThreadData->GetNewCpuTimeInNs();
+ if (ActivePS::FeatureJS(aLock)) {
+ lockedThreadData->StartJSSampling(ActivePS::JSFlags(aLock));
+ if (ThreadRegistration::LockedRWOnThread* lockedRWOnThread =
+ lockedThreadData.GetLockedRWOnThread();
+ lockedRWOnThread) {
+ // We can manually poll the current thread so it starts sampling
+ // immediately.
+ lockedRWOnThread->PollJSSampling();
+ } else if (info.IsMainThread()) {
+ // Dispatch a runnable to the main thread to call
+ // PollJSSampling(), so that we don't have wait for the next JS
+ // interrupt callback in order to start profiling JS.
+ TriggerPollJSSamplingOnMainThread();
+ }
+ }
+#if defined(MOZ_REPLACE_MALLOC) && defined(MOZ_PROFILER_MEMORY)
+ if (info.IsMainThread()) {
+ isMainThreadBeingProfiled = true;
+ }
+#endif
+ lockedThreadData->ReinitializeOnResume();
+ if (ActivePS::FeatureJS(aLock) && lockedThreadData->GetJSContext()) {
+ profiledThreadData->NotifyReceivedJSContext(0);
+ }
+ }
+ }
+
+ // Setup support for pushing/popping labels in mozglue.
+ RegisterProfilerLabelEnterExit(MozGlueLabelEnter, MozGlueLabelExit);
+
+#if defined(GP_OS_android)
+ if (ActivePS::FeatureJava(aLock)) {
+ int javaInterval = interval;
+ // Java sampling doesn't accurately keep up with the sampling rate that is
+ // lower than 1ms.
+ if (javaInterval < 1) {
+ javaInterval = 1;
+ }
+
+ JNIEnv* env = jni::GetEnvForThread();
+ const auto& filters = ActivePS::Filters(aLock);
+ jni::ObjectArray::LocalRef javaFilters =
+ jni::ObjectArray::New<jni::String>(filters.length());
+ for (size_t i = 0; i < filters.length(); i++) {
+ javaFilters->SetElement(i, jni::StringParam(filters[i].data(), env));
+ }
+
+ // Send the interval-relative entry count, but we have 100000 hard cap in
+ // the java code, it can't be more than that.
+ java::GeckoJavaSampler::Start(
+ javaFilters, javaInterval,
+ std::round((double)(capacity.Value()) * interval /
+ (double)(javaInterval)));
+ }
+#endif
+
+#if defined(MOZ_REPLACE_MALLOC) && defined(MOZ_PROFILER_MEMORY)
+ if (ActivePS::FeatureNativeAllocations(aLock)) {
+ if (isMainThreadBeingProfiled) {
+ mozilla::profiler::enable_native_allocations();
+ } else {
+ NS_WARNING(
+ "The nativeallocations feature is turned on, but the main thread is "
+ "not being profiled. The allocations are only stored on the main "
+ "thread.");
+ }
+ }
+#endif
+
+ if (ProfilerFeature::HasAudioCallbackTracing(aFeatures)) {
+ StartAudioCallbackTracing();
+ }
+
+ // At the very end, set up RacyFeatures.
+ RacyFeatures::SetActive(ActivePS::Features(aLock));
+
+ if (profilersHandOver) {
+ PROFILER_MARKER_UNTYPED("Profilers handover", PROFILER,
+ MarkerTiming::IntervalEnd());
+ }
+}
+
+RefPtr<GenericPromise> profiler_start(PowerOfTwo32 aCapacity, double aInterval,
+ uint32_t aFeatures, const char** aFilters,
+ uint32_t aFilterCount,
+ uint64_t aActiveTabID,
+ const Maybe<double>& aDuration) {
+ LOG("profiler_start");
+
+ ProfilerParent::ProfilerWillStopIfStarted();
+
+ SamplerThread* samplerThread = nullptr;
+ {
+ PSAutoLock lock;
+
+ // Initialize if necessary.
+ if (!CorePS::Exists()) {
+ profiler_init(nullptr);
+ }
+
+ // Reset the current state if the profiler is running.
+ if (ActivePS::Exists(lock)) {
+ // Note: Not invoking callbacks with ProfilingState::Stopping, because
+ // we're under lock, and also it would not be useful: Any profiling data
+ // will be discarded, and we're immediately restarting the profiler below
+ // and then notifying ProfilingState::Started.
+ samplerThread = locked_profiler_stop(lock);
+ }
+
+ locked_profiler_start(lock, aCapacity, aInterval, aFeatures, aFilters,
+ aFilterCount, aActiveTabID, aDuration);
+ }
+
+#if defined(MOZ_REPLACE_MALLOC) && defined(MOZ_PROFILER_MEMORY)
+ // Start counting memory allocations (outside of lock because this may call
+ // profiler_add_sampled_counter which would attempt to take the lock.)
+ ActivePS::SetMemoryCounter(mozilla::profiler::install_memory_hooks());
+#endif
+
+ invoke_profiler_state_change_callbacks(ProfilingState::Started);
+
+ // We do these operations with gPSMutex unlocked. The comments in
+ // profiler_stop() explain why.
+ if (samplerThread) {
+ Unused << ProfilerParent::ProfilerStopped();
+ NotifyObservers("profiler-stopped");
+ delete samplerThread;
+ }
+ return NotifyProfilerStarted(aCapacity, aDuration, aInterval, aFeatures,
+ aFilters, aFilterCount, aActiveTabID);
+}
+
+void profiler_ensure_started(PowerOfTwo32 aCapacity, double aInterval,
+ uint32_t aFeatures, const char** aFilters,
+ uint32_t aFilterCount, uint64_t aActiveTabID,
+ const Maybe<double>& aDuration) {
+ LOG("profiler_ensure_started");
+
+ ProfilerParent::ProfilerWillStopIfStarted();
+
+ bool startedProfiler = false;
+ SamplerThread* samplerThread = nullptr;
+ {
+ PSAutoLock lock;
+
+ // Initialize if necessary.
+ if (!CorePS::Exists()) {
+ profiler_init(nullptr);
+ }
+
+ if (ActivePS::Exists(lock)) {
+ // The profiler is active.
+ if (!ActivePS::Equals(lock, aCapacity, aDuration, aInterval, aFeatures,
+ aFilters, aFilterCount, aActiveTabID)) {
+ // Stop and restart with different settings.
+ // Note: Not invoking callbacks with ProfilingState::Stopping, because
+ // we're under lock, and also it would not be useful: Any profiling data
+ // will be discarded, and we're immediately restarting the profiler
+ // below and then notifying ProfilingState::Started.
+ samplerThread = locked_profiler_stop(lock);
+ locked_profiler_start(lock, aCapacity, aInterval, aFeatures, aFilters,
+ aFilterCount, aActiveTabID, aDuration);
+ startedProfiler = true;
+ }
+ } else {
+ // The profiler is stopped.
+ locked_profiler_start(lock, aCapacity, aInterval, aFeatures, aFilters,
+ aFilterCount, aActiveTabID, aDuration);
+ startedProfiler = true;
+ }
+ }
+
+ // We do these operations with gPSMutex unlocked. The comments in
+ // profiler_stop() explain why.
+ if (samplerThread) {
+ Unused << ProfilerParent::ProfilerStopped();
+ NotifyObservers("profiler-stopped");
+ delete samplerThread;
+ }
+
+ if (startedProfiler) {
+ invoke_profiler_state_change_callbacks(ProfilingState::Started);
+
+ Unused << NotifyProfilerStarted(aCapacity, aDuration, aInterval, aFeatures,
+ aFilters, aFilterCount, aActiveTabID);
+ }
+}
+
+[[nodiscard]] static SamplerThread* locked_profiler_stop(PSLockRef aLock) {
+ LOG("locked_profiler_stop");
+
+ MOZ_RELEASE_ASSERT(CorePS::Exists() && ActivePS::Exists(aLock));
+
+ // At the very start, clear RacyFeatures.
+ RacyFeatures::SetInactive();
+
+ if (ActivePS::FeatureAudioCallbackTracing(aLock)) {
+ StopAudioCallbackTracing();
+ }
+
+#if defined(GP_OS_android)
+ if (ActivePS::FeatureJava(aLock)) {
+ java::GeckoJavaSampler::Stop();
+ }
+#endif
+
+ // Remove support for pushing/popping labels in mozglue.
+ RegisterProfilerLabelEnterExit(nullptr, nullptr);
+
+ // Stop sampling live threads.
+ ThreadRegistry::LockedRegistry lockedRegistry;
+ for (ThreadRegistry::OffThreadRef offThreadRef : lockedRegistry) {
+ if (offThreadRef.UnlockedRWForLockedProfilerRef().ProfilingFeatures() ==
+ ThreadProfilingFeatures::NotProfiled) {
+ continue;
+ }
+
+ ThreadRegistry::OffThreadRef::RWFromAnyThreadWithLock lockedThreadData =
+ offThreadRef.GetLockedRWFromAnyThread();
+
+ lockedThreadData->ClearProfilingFeaturesAndData(aLock);
+
+ if (ActivePS::FeatureJS(aLock)) {
+ lockedThreadData->StopJSSampling();
+ if (ThreadRegistration::LockedRWOnThread* lockedRWOnThread =
+ lockedThreadData.GetLockedRWOnThread();
+ lockedRWOnThread) {
+ // We are on the thread, we can manually poll the current thread so it
+ // stops profiling immediately.
+ lockedRWOnThread->PollJSSampling();
+ } else if (lockedThreadData->Info().IsMainThread()) {
+ // Dispatch a runnable to the main thread to call PollJSSampling(),
+ // so that we don't have wait for the next JS interrupt callback in
+ // order to start profiling JS.
+ TriggerPollJSSamplingOnMainThread();
+ }
+ }
+ }
+
+#if defined(MOZ_REPLACE_MALLOC) && defined(MOZ_PROFILER_MEMORY)
+ if (ActivePS::FeatureNativeAllocations(aLock)) {
+ mozilla::profiler::disable_native_allocations();
+ }
+#endif
+
+ // The Stop() call doesn't actually stop Run(); that happens in this
+ // function's caller when the sampler thread is destroyed. Stop() just gives
+ // the SamplerThread a chance to do some cleanup with gPSMutex locked.
+ SamplerThread* samplerThread = ActivePS::Destroy(aLock);
+ samplerThread->Stop(aLock);
+
+ if (NS_IsMainThread()) {
+ mozilla::base_profiler_markers_detail::
+ ReleaseBufferForMainThreadAddMarker();
+ } else {
+ NS_DispatchToMainThread(
+ NS_NewRunnableFunction("ReleaseBufferForMainThreadAddMarker",
+ &mozilla::base_profiler_markers_detail::
+ ReleaseBufferForMainThreadAddMarker));
+ }
+
+ return samplerThread;
+}
+
+RefPtr<GenericPromise> profiler_stop() {
+ LOG("profiler_stop");
+
+ MOZ_RELEASE_ASSERT(CorePS::Exists());
+
+ if (profiler_is_active()) {
+ invoke_profiler_state_change_callbacks(ProfilingState::Stopping);
+ }
+
+ ProfilerParent::ProfilerWillStopIfStarted();
+
+#if defined(MOZ_REPLACE_MALLOC) && defined(MOZ_PROFILER_MEMORY)
+ // Remove the hooks early, as native allocations (if they are on) can be
+ // quite expensive.
+ mozilla::profiler::remove_memory_hooks();
+#endif
+
+ SamplerThread* samplerThread;
+ {
+ PSAutoLock lock;
+
+ if (!ActivePS::Exists(lock)) {
+ return GenericPromise::CreateAndResolve(/* unused */ true, __func__);
+ }
+
+ samplerThread = locked_profiler_stop(lock);
+ }
+
+ // We notify observers with gPSMutex unlocked. Otherwise we might get a
+ // deadlock, if code run by these functions calls a profiler function that
+ // locks gPSMutex, for example when it wants to insert a marker.
+ // (This has been seen in practise in bug 1346356, when we were still firing
+ // these notifications synchronously.)
+ RefPtr<GenericPromise> promise = ProfilerParent::ProfilerStopped();
+ NotifyObservers("profiler-stopped");
+
+ // We delete with gPSMutex unlocked. Otherwise we would get a deadlock: we
+ // would be waiting here with gPSMutex locked for SamplerThread::Run() to
+ // return so the join operation within the destructor can complete, but Run()
+ // needs to lock gPSMutex to return.
+ //
+ // Because this call occurs with gPSMutex unlocked, it -- including the final
+ // iteration of Run()'s loop -- must be able detect deactivation and return
+ // in a way that's safe with respect to other gPSMutex-locking operations
+ // that may have occurred in the meantime.
+ delete samplerThread;
+
+ return promise;
+}
+
+bool profiler_is_paused() {
+ MOZ_RELEASE_ASSERT(CorePS::Exists());
+
+ PSAutoLock lock;
+
+ if (!ActivePS::Exists(lock)) {
+ return false;
+ }
+
+ return ActivePS::IsPaused(lock);
+}
+
+/* [[nodiscard]] */ bool profiler_callback_after_sampling(
+ PostSamplingCallback&& aCallback) {
+ LOG("profiler_callback_after_sampling");
+
+ MOZ_RELEASE_ASSERT(CorePS::Exists());
+
+ PSAutoLock lock;
+
+ return ActivePS::AppendPostSamplingCallback(lock, std::move(aCallback));
+}
+
+RefPtr<GenericPromise> profiler_pause() {
+ LOG("profiler_pause");
+
+ MOZ_RELEASE_ASSERT(CorePS::Exists());
+
+ invoke_profiler_state_change_callbacks(ProfilingState::Pausing);
+
+ {
+ PSAutoLock lock;
+
+ if (!ActivePS::Exists(lock)) {
+ return GenericPromise::CreateAndResolve(/* unused */ true, __func__);
+ }
+
+#if defined(GP_OS_android)
+ if (ActivePS::FeatureJava(lock) && !ActivePS::IsSamplingPaused(lock)) {
+ // Not paused yet, so this is the first pause, let Java know.
+ // TODO: Distinguish Pause and PauseSampling in Java.
+ java::GeckoJavaSampler::PauseSampling();
+ }
+#endif
+
+ RacyFeatures::SetPaused();
+ ActivePS::SetIsPaused(lock, true);
+ ActivePS::Buffer(lock).AddEntry(ProfileBufferEntry::Pause(profiler_time()));
+ }
+
+ // gPSMutex must be unlocked when we notify, to avoid potential deadlocks.
+ RefPtr<GenericPromise> promise = ProfilerParent::ProfilerPaused();
+ NotifyObservers("profiler-paused");
+ return promise;
+}
+
+RefPtr<GenericPromise> profiler_resume() {
+ LOG("profiler_resume");
+
+ MOZ_RELEASE_ASSERT(CorePS::Exists());
+
+ {
+ PSAutoLock lock;
+
+ if (!ActivePS::Exists(lock)) {
+ return GenericPromise::CreateAndResolve(/* unused */ true, __func__);
+ }
+
+ ActivePS::Buffer(lock).AddEntry(
+ ProfileBufferEntry::Resume(profiler_time()));
+ ActivePS::SetIsPaused(lock, false);
+ RacyFeatures::SetUnpaused();
+
+#if defined(GP_OS_android)
+ if (ActivePS::FeatureJava(lock) && !ActivePS::IsSamplingPaused(lock)) {
+ // Not paused anymore, so this is the last unpause, let Java know.
+ // TODO: Distinguish Unpause and UnpauseSampling in Java.
+ java::GeckoJavaSampler::UnpauseSampling();
+ }
+#endif
+ }
+
+ // gPSMutex must be unlocked when we notify, to avoid potential deadlocks.
+ RefPtr<GenericPromise> promise = ProfilerParent::ProfilerResumed();
+ NotifyObservers("profiler-resumed");
+
+ invoke_profiler_state_change_callbacks(ProfilingState::Resumed);
+
+ return promise;
+}
+
+bool profiler_is_sampling_paused() {
+ MOZ_RELEASE_ASSERT(CorePS::Exists());
+
+ PSAutoLock lock;
+
+ if (!ActivePS::Exists(lock)) {
+ return false;
+ }
+
+ return ActivePS::IsSamplingPaused(lock);
+}
+
+RefPtr<GenericPromise> profiler_pause_sampling() {
+ LOG("profiler_pause_sampling");
+
+ MOZ_RELEASE_ASSERT(CorePS::Exists());
+
+ {
+ PSAutoLock lock;
+
+ if (!ActivePS::Exists(lock)) {
+ return GenericPromise::CreateAndResolve(/* unused */ true, __func__);
+ }
+
+#if defined(GP_OS_android)
+ if (ActivePS::FeatureJava(lock) && !ActivePS::IsSamplingPaused(lock)) {
+ // Not paused yet, so this is the first pause, let Java know.
+ // TODO: Distinguish Pause and PauseSampling in Java.
+ java::GeckoJavaSampler::PauseSampling();
+ }
+#endif
+
+ RacyFeatures::SetSamplingPaused();
+ ActivePS::SetIsSamplingPaused(lock, true);
+ ActivePS::Buffer(lock).AddEntry(
+ ProfileBufferEntry::PauseSampling(profiler_time()));
+ }
+
+ // gPSMutex must be unlocked when we notify, to avoid potential deadlocks.
+ RefPtr<GenericPromise> promise = ProfilerParent::ProfilerPausedSampling();
+ NotifyObservers("profiler-paused-sampling");
+ return promise;
+}
+
+RefPtr<GenericPromise> profiler_resume_sampling() {
+ LOG("profiler_resume_sampling");
+
+ MOZ_RELEASE_ASSERT(CorePS::Exists());
+
+ {
+ PSAutoLock lock;
+
+ if (!ActivePS::Exists(lock)) {
+ return GenericPromise::CreateAndResolve(/* unused */ true, __func__);
+ }
+
+ ActivePS::Buffer(lock).AddEntry(
+ ProfileBufferEntry::ResumeSampling(profiler_time()));
+ ActivePS::SetIsSamplingPaused(lock, false);
+ RacyFeatures::SetSamplingUnpaused();
+
+#if defined(GP_OS_android)
+ if (ActivePS::FeatureJava(lock) && !ActivePS::IsSamplingPaused(lock)) {
+ // Not paused anymore, so this is the last unpause, let Java know.
+ // TODO: Distinguish Unpause and UnpauseSampling in Java.
+ java::GeckoJavaSampler::UnpauseSampling();
+ }
+#endif
+ }
+
+ // gPSMutex must be unlocked when we notify, to avoid potential deadlocks.
+ RefPtr<GenericPromise> promise = ProfilerParent::ProfilerResumedSampling();
+ NotifyObservers("profiler-resumed-sampling");
+ return promise;
+}
+
+bool profiler_feature_active(uint32_t aFeature) {
+ // This function runs both on and off the main thread.
+
+ MOZ_RELEASE_ASSERT(CorePS::Exists());
+
+ // This function is hot enough that we use RacyFeatures, not ActivePS.
+ return RacyFeatures::IsActiveWithFeature(aFeature);
+}
+
+bool profiler_active_without_feature(uint32_t aFeature) {
+ // This function runs both on and off the main thread.
+
+ // This function is hot enough that we use RacyFeatures, not ActivePS.
+ return RacyFeatures::IsActiveWithoutFeature(aFeature);
+}
+
+void profiler_write_active_configuration(JSONWriter& aWriter) {
+ MOZ_RELEASE_ASSERT(CorePS::Exists());
+ PSAutoLock lock;
+ ActivePS::WriteActiveConfiguration(lock, aWriter);
+}
+
+void profiler_add_sampled_counter(BaseProfilerCount* aCounter) {
+ DEBUG_LOG("profiler_add_sampled_counter(%s)", aCounter->mLabel);
+ PSAutoLock lock;
+ locked_profiler_add_sampled_counter(lock, aCounter);
+}
+
+void profiler_remove_sampled_counter(BaseProfilerCount* aCounter) {
+ DEBUG_LOG("profiler_remove_sampled_counter(%s)", aCounter->mLabel);
+ PSAutoLock lock;
+ locked_profiler_remove_sampled_counter(lock, aCounter);
+}
+
+ProfilingStack* profiler_register_thread(const char* aName,
+ void* aGuessStackTop) {
+ DEBUG_LOG("profiler_register_thread(%s)", aName);
+
+ // This will call `ThreadRegistry::Register()` (see below).
+ return ThreadRegistration::RegisterThread(aName, aGuessStackTop);
+}
+
+/* static */
+void ThreadRegistry::Register(ThreadRegistration::OnThreadRef aOnThreadRef) {
+ // Set the thread name (except for the main thread, which is controlled
+ // elsewhere, and influences the process name on some systems like Linux).
+ if (!aOnThreadRef.UnlockedConstReaderCRef().Info().IsMainThread()) {
+ // Make sure we have a nsThread wrapper for the current thread, and that
+ // NSPR knows its name.
+ (void)NS_GetCurrentThread();
+ NS_SetCurrentThreadName(
+ aOnThreadRef.UnlockedConstReaderCRef().Info().Name());
+ }
+
+ PSAutoLock lock;
+
+ {
+ RegistryLockExclusive lock{sRegistryMutex};
+ MOZ_RELEASE_ASSERT(sRegistryContainer.append(OffThreadRef{aOnThreadRef}));
+ }
+
+ if (!CorePS::Exists()) {
+ // CorePS has not been created yet.
+ // If&when that happens, it will handle already-registered threads then.
+ return;
+ }
+
+ (void)locked_register_thread(lock, OffThreadRef{aOnThreadRef});
+}
+
+void profiler_unregister_thread() {
+ // This will call `ThreadRegistry::Unregister()` (see below).
+ ThreadRegistration::UnregisterThread();
+}
+
+static void locked_unregister_thread(
+ PSLockRef lock, ThreadRegistration::OnThreadRef aOnThreadRef) {
+ if (!CorePS::Exists()) {
+ // This function can be called after the main thread has already shut
+ // down.
+ return;
+ }
+
+ // We don't call StopJSSampling() here; there's no point doing that for a JS
+ // thread that is in the process of disappearing.
+
+ ThreadRegistration::OnThreadRef::RWOnThreadWithLock lockedThreadData =
+ aOnThreadRef.GetLockedRWOnThread();
+
+ ProfiledThreadData* profiledThreadData =
+ lockedThreadData->GetProfiledThreadData(lock);
+ lockedThreadData->ClearProfilingFeaturesAndData(lock);
+
+ MOZ_RELEASE_ASSERT(
+ lockedThreadData->Info().ThreadId() == profiler_current_thread_id(),
+ "Thread being unregistered has changed its TID");
+
+ DEBUG_LOG("profiler_unregister_thread: %s", lockedThreadData->Info().Name());
+
+ if (profiledThreadData && ActivePS::Exists(lock)) {
+ ActivePS::UnregisterThread(lock, profiledThreadData);
+ }
+}
+
+/* static */
+void ThreadRegistry::Unregister(ThreadRegistration::OnThreadRef aOnThreadRef) {
+ PSAutoLock psLock;
+ locked_unregister_thread(psLock, aOnThreadRef);
+
+ RegistryLockExclusive lock{sRegistryMutex};
+ for (OffThreadRef& thread : sRegistryContainer) {
+ if (thread.IsPointingAt(*aOnThreadRef.mThreadRegistration)) {
+ sRegistryContainer.erase(&thread);
+ break;
+ }
+ }
+}
+
+void profiler_register_page(uint64_t aTabID, uint64_t aInnerWindowID,
+ const nsCString& aUrl,
+ uint64_t aEmbedderInnerWindowID,
+ bool aIsPrivateBrowsing) {
+ DEBUG_LOG("profiler_register_page(%" PRIu64 ", %" PRIu64 ", %s, %" PRIu64
+ ", %s)",
+ aTabID, aInnerWindowID, aUrl.get(), aEmbedderInnerWindowID,
+ aIsPrivateBrowsing ? "true" : "false");
+
+ MOZ_RELEASE_ASSERT(CorePS::Exists());
+
+ PSAutoLock lock;
+
+ // When a Browsing context is first loaded, the first url loaded in it will be
+ // about:blank. Because of that, this call keeps the first non-about:blank
+ // registration of window and discards the previous one.
+ RefPtr<PageInformation> pageInfo = new PageInformation(
+ aTabID, aInnerWindowID, aUrl, aEmbedderInnerWindowID, aIsPrivateBrowsing);
+ CorePS::AppendRegisteredPage(lock, std::move(pageInfo));
+
+ // After appending the given page to CorePS, look for the expired
+ // pages and remove them if there are any.
+ if (ActivePS::Exists(lock)) {
+ ActivePS::DiscardExpiredPages(lock);
+ }
+}
+
+void profiler_unregister_page(uint64_t aRegisteredInnerWindowID) {
+ PSAutoLock lock;
+
+ if (!CorePS::Exists()) {
+ // This function can be called after the main thread has already shut down.
+ return;
+ }
+
+ // During unregistration, if the profiler is active, we have to keep the
+ // page information since there may be some markers associated with the given
+ // page. But if profiler is not active. we have no reason to keep the
+ // page information here because there can't be any marker associated with it.
+ if (ActivePS::Exists(lock)) {
+ ActivePS::UnregisterPage(lock, aRegisteredInnerWindowID);
+ } else {
+ CorePS::RemoveRegisteredPage(lock, aRegisteredInnerWindowID);
+ }
+}
+
+void profiler_clear_all_pages() {
+ {
+ PSAutoLock lock;
+
+ if (!CorePS::Exists()) {
+ // This function can be called after the main thread has already shut
+ // down.
+ return;
+ }
+
+ CorePS::ClearRegisteredPages(lock);
+ if (ActivePS::Exists(lock)) {
+ ActivePS::ClearUnregisteredPages(lock);
+ }
+ }
+
+ // gPSMutex must be unlocked when we notify, to avoid potential deadlocks.
+ ProfilerParent::ClearAllPages();
+}
+
+namespace geckoprofiler::markers::detail {
+
+Maybe<uint64_t> profiler_get_inner_window_id_from_docshell(
+ nsIDocShell* aDocshell) {
+ Maybe<uint64_t> innerWindowID = Nothing();
+ if (aDocshell) {
+ auto outerWindow = aDocshell->GetWindow();
+ if (outerWindow) {
+ auto innerWindow = outerWindow->GetCurrentInnerWindow();
+ if (innerWindow) {
+ innerWindowID = Some(innerWindow->WindowID());
+ }
+ }
+ }
+ return innerWindowID;
+}
+
+} // namespace geckoprofiler::markers::detail
+
+namespace geckoprofiler::markers {
+
+struct CPUAwakeMarker {
+ static constexpr Span<const char> MarkerTypeName() {
+ return MakeStringSpan("Awake");
+ }
+ static void StreamJSONMarkerData(baseprofiler::SpliceableJSONWriter& aWriter,
+ int64_t aCPUId
+#ifdef GP_OS_darwin
+ ,
+ uint32_t aQoS
+#endif
+#ifdef GP_OS_windows
+ ,
+ int32_t aAbsolutePriority,
+ int32_t aRelativePriority,
+ int32_t aCurrentPriority
+#endif
+ ) {
+#ifndef GP_PLAT_arm64_darwin
+ aWriter.IntProperty("CPU Id", aCPUId);
+#endif
+#ifdef GP_OS_windows
+ if (aAbsolutePriority) {
+ aWriter.IntProperty("absPriority", aAbsolutePriority);
+ }
+ if (aCurrentPriority) {
+ aWriter.IntProperty("curPriority", aCurrentPriority);
+ }
+ aWriter.IntProperty("priority", aRelativePriority);
+#endif
+#ifdef GP_OS_darwin
+ const char* QoS = "";
+ switch (aQoS) {
+ case QOS_CLASS_USER_INTERACTIVE:
+ QoS = "User Interactive";
+ break;
+ case QOS_CLASS_USER_INITIATED:
+ QoS = "User Initiated";
+ break;
+ case QOS_CLASS_DEFAULT:
+ QoS = "Default";
+ break;
+ case QOS_CLASS_UTILITY:
+ QoS = "Utility";
+ break;
+ case QOS_CLASS_BACKGROUND:
+ QoS = "Background";
+ break;
+ default:
+ QoS = "Unspecified";
+ }
+
+ aWriter.StringProperty("QoS",
+ ProfilerString8View::WrapNullTerminatedString(QoS));
+#endif
+ }
+
+ static MarkerSchema MarkerTypeDisplay() {
+ using MS = MarkerSchema;
+ MS schema{MS::Location::MarkerChart, MS::Location::MarkerTable};
+ schema.AddKeyFormat("CPU Time", MS::Format::Duration);
+#ifndef GP_PLAT_arm64_darwin
+ schema.AddKeyFormat("CPU Id", MS::Format::Integer);
+ schema.SetTableLabel("Awake - CPU Id = {marker.data.CPU Id}");
+#endif
+#ifdef GP_OS_windows
+ schema.AddKeyLabelFormat("priority", "Relative Thread Priority",
+ MS::Format::Integer);
+ schema.AddKeyLabelFormat("absPriority", "Base Thread Priority",
+ MS::Format::Integer);
+ schema.AddKeyLabelFormat("curPriority", "Current Thread Priority",
+ MS::Format::Integer);
+#endif
+#ifdef GP_OS_darwin
+ schema.AddKeyLabelFormat("QoS", "Quality of Service", MS::Format::String);
+#endif
+ return schema;
+ }
+};
+
+struct CPUAwakeMarkerEnd : public CPUAwakeMarker {
+ static constexpr Span<const char> MarkerTypeName() {
+ return MakeStringSpan("AwakeEnd");
+ }
+ static void StreamJSONMarkerData(baseprofiler::SpliceableJSONWriter& aWriter,
+ int64_t aCPUTimeNs) {
+ if (aCPUTimeNs) {
+ constexpr double NS_PER_MS = 1'000'000;
+ aWriter.DoubleProperty("CPU Time", double(aCPUTimeNs) / NS_PER_MS);
+ }
+ }
+};
+
+} // namespace geckoprofiler::markers
+
+void profiler_mark_thread_asleep() {
+ if (!profiler_thread_is_being_profiled_for_markers()) {
+ return;
+ }
+
+ uint64_t cpuTimeNs = ThreadRegistration::WithOnThreadRefOr(
+ [](ThreadRegistration::OnThreadRef aOnThreadRef) {
+ return aOnThreadRef.UnlockedConstReaderAndAtomicRWRef()
+ .GetNewCpuTimeInNs();
+ },
+ 0);
+ PROFILER_MARKER("Awake", OTHER, MarkerTiming::IntervalEnd(),
+ CPUAwakeMarkerEnd, cpuTimeNs);
+}
+
+void profiler_thread_sleep() {
+ profiler_mark_thread_asleep();
+ ThreadRegistration::WithOnThreadRef(
+ [](ThreadRegistration::OnThreadRef aOnThreadRef) {
+ aOnThreadRef.UnlockedConstReaderAndAtomicRWRef().SetSleeping();
+ });
+}
+
+#if defined(GP_OS_windows)
+# if !defined(__MINGW32__)
+enum {
+ ThreadBasicInformation,
+};
+# endif
+
+struct THREAD_BASIC_INFORMATION {
+ NTSTATUS ExitStatus;
+ PVOID TebBaseAddress;
+ CLIENT_ID ClientId;
+ KAFFINITY AffMask;
+ DWORD Priority;
+ DWORD BasePriority;
+};
+#endif
+
+static mozilla::Atomic<uint64_t, mozilla::MemoryOrdering::Relaxed> gWakeCount(
+ 0);
+
+namespace geckoprofiler::markers {
+struct WakeUpCountMarker {
+ static constexpr Span<const char> MarkerTypeName() {
+ return MakeStringSpan("WakeUpCount");
+ }
+ static void StreamJSONMarkerData(baseprofiler::SpliceableJSONWriter& aWriter,
+ int32_t aCount,
+ const ProfilerString8View& aType) {
+ aWriter.IntProperty("Count", aCount);
+ aWriter.StringProperty("label", aType);
+ }
+ static MarkerSchema MarkerTypeDisplay() {
+ using MS = MarkerSchema;
+ MS schema{MS::Location::MarkerChart, MS::Location::MarkerTable};
+ schema.AddKeyFormat("Count", MS::Format::Integer);
+ schema.SetTooltipLabel("{marker.name} - {marker.data.label}");
+ schema.SetTableLabel(
+ "{marker.name} - {marker.data.label}: {marker.data.count}");
+ return schema;
+ }
+};
+} // namespace geckoprofiler::markers
+
+void profiler_record_wakeup_count(const nsACString& aProcessType) {
+ static uint64_t previousThreadWakeCount = 0;
+
+ uint64_t newWakeups = gWakeCount - previousThreadWakeCount;
+ if (newWakeups > 0) {
+ if (newWakeups < std::numeric_limits<int32_t>::max()) {
+ int32_t newWakeups32 = int32_t(newWakeups);
+ mozilla::glean::power::total_thread_wakeups.Add(newWakeups32);
+ mozilla::glean::power::wakeups_per_process_type.Get(aProcessType)
+ .Add(newWakeups32);
+ PROFILER_MARKER("Thread Wake-ups", OTHER, {}, WakeUpCountMarker,
+ newWakeups32, aProcessType);
+ }
+
+ previousThreadWakeCount += newWakeups;
+ }
+
+#ifdef NIGHTLY_BUILD
+ ThreadRegistry::LockedRegistry lockedRegistry;
+ for (ThreadRegistry::OffThreadRef offThreadRef : lockedRegistry) {
+ const ThreadRegistry::UnlockedConstReaderAndAtomicRW& threadData =
+ offThreadRef.UnlockedConstReaderAndAtomicRWRef();
+ threadData.RecordWakeCount();
+ }
+#endif
+}
+
+void profiler_mark_thread_awake() {
+ ++gWakeCount;
+ if (!profiler_thread_is_being_profiled_for_markers()) {
+ return;
+ }
+
+ int64_t cpuId = 0;
+#if defined(GP_OS_windows)
+ cpuId = GetCurrentProcessorNumber();
+#elif defined(GP_OS_darwin)
+# ifdef GP_PLAT_amd64_darwin
+ unsigned int eax, ebx, ecx, edx;
+ __cpuid_count(1, 0, eax, ebx, ecx, edx);
+ // Check if we have an APIC.
+ if ((edx & (1 << 9))) {
+ // APIC ID is bits 24-31 of EBX
+ cpuId = ebx >> 24;
+ }
+# endif
+#else
+ cpuId = sched_getcpu();
+#endif
+
+#if defined(GP_OS_windows)
+ LONG priority;
+ static const auto get_thread_information_fn =
+ reinterpret_cast<decltype(&::GetThreadInformation)>(::GetProcAddress(
+ ::GetModuleHandle(L"Kernel32.dll"), "GetThreadInformation"));
+
+ if (!get_thread_information_fn ||
+ !get_thread_information_fn(GetCurrentThread(), ThreadAbsoluteCpuPriority,
+ &priority, sizeof(priority))) {
+ priority = 0;
+ }
+
+ static const auto nt_query_information_thread_fn =
+ reinterpret_cast<decltype(&::NtQueryInformationThread)>(::GetProcAddress(
+ ::GetModuleHandle(L"ntdll.dll"), "NtQueryInformationThread"));
+
+ LONG currentPriority = 0;
+ if (nt_query_information_thread_fn) {
+ THREAD_BASIC_INFORMATION threadInfo;
+ auto status = (*nt_query_information_thread_fn)(
+ GetCurrentThread(), (THREADINFOCLASS)ThreadBasicInformation,
+ &threadInfo, sizeof(threadInfo), NULL);
+ if (NT_SUCCESS(status)) {
+ currentPriority = threadInfo.Priority;
+ }
+ }
+#endif
+ PROFILER_MARKER(
+ "Awake", OTHER, MarkerTiming::IntervalStart(), CPUAwakeMarker, cpuId
+#if defined(GP_OS_darwin)
+ ,
+ qos_class_self()
+#endif
+#if defined(GP_OS_windows)
+ ,
+ priority, GetThreadPriority(GetCurrentThread()), currentPriority
+#endif
+ );
+}
+
+void profiler_thread_wake() {
+ profiler_mark_thread_awake();
+ ThreadRegistration::WithOnThreadRef(
+ [](ThreadRegistration::OnThreadRef aOnThreadRef) {
+ aOnThreadRef.UnlockedConstReaderAndAtomicRWRef().SetAwake();
+ });
+}
+
+void profiler_js_interrupt_callback() {
+ // This function runs on JS threads being sampled.
+ PollJSSamplingForCurrentThread();
+}
+
+double profiler_time() {
+ MOZ_RELEASE_ASSERT(CorePS::Exists());
+
+ TimeDuration delta = TimeStamp::Now() - CorePS::ProcessStartTime();
+ return delta.ToMilliseconds();
+}
+
+bool profiler_capture_backtrace_into(ProfileChunkedBuffer& aChunkedBuffer,
+ StackCaptureOptions aCaptureOptions) {
+ MOZ_RELEASE_ASSERT(CorePS::Exists());
+
+ if (!profiler_is_active() ||
+ aCaptureOptions == StackCaptureOptions::NoStack) {
+ return false;
+ }
+
+ return ThreadRegistration::WithOnThreadRefOr(
+ [&](ThreadRegistration::OnThreadRef aOnThreadRef) {
+ mozilla::Maybe<uint32_t> maybeFeatures =
+ RacyFeatures::FeaturesIfActiveAndUnpaused();
+ if (!maybeFeatures) {
+ return false;
+ }
+
+ ProfileBuffer profileBuffer(aChunkedBuffer);
+
+ Registers regs;
+#if defined(HAVE_NATIVE_UNWIND)
+ REGISTERS_SYNC_POPULATE(regs);
+#else
+ regs.Clear();
+#endif
+
+ DoSyncSample(*maybeFeatures,
+ aOnThreadRef.UnlockedReaderAndAtomicRWOnThreadCRef(),
+ TimeStamp::Now(), regs, profileBuffer, aCaptureOptions);
+
+ return true;
+ },
+ // If this was called from a non-registered thread, return false and do no
+ // more work. This can happen from a memory hook.
+ false);
+}
+
+UniquePtr<ProfileChunkedBuffer> profiler_capture_backtrace() {
+ MOZ_RELEASE_ASSERT(CorePS::Exists());
+ AUTO_PROFILER_LABEL("profiler_capture_backtrace", PROFILER);
+
+ // Quick is-active and feature check before allocating a buffer.
+ // If NoMarkerStacks is set, we don't want to capture a backtrace.
+ if (!profiler_active_without_feature(ProfilerFeature::NoMarkerStacks)) {
+ return nullptr;
+ }
+
+ auto buffer = MakeUnique<ProfileChunkedBuffer>(
+ ProfileChunkedBuffer::ThreadSafety::WithoutMutex,
+ MakeUnique<ProfileBufferChunkManagerSingle>(
+ ProfileBufferChunkManager::scExpectedMaximumStackSize));
+
+ if (!profiler_capture_backtrace_into(*buffer, StackCaptureOptions::Full)) {
+ return nullptr;
+ }
+
+ return buffer;
+}
+
+UniqueProfilerBacktrace profiler_get_backtrace() {
+ UniquePtr<ProfileChunkedBuffer> buffer = profiler_capture_backtrace();
+
+ if (!buffer) {
+ return nullptr;
+ }
+
+ return UniqueProfilerBacktrace(
+ new ProfilerBacktrace("SyncProfile", std::move(buffer)));
+}
+
+void ProfilerBacktraceDestructor::operator()(ProfilerBacktrace* aBacktrace) {
+ delete aBacktrace;
+}
+
+bool profiler_is_locked_on_current_thread() {
+ // This function is used to help users avoid calling `profiler_...` functions
+ // when the profiler may already have a lock in place, which would prevent a
+ // 2nd recursive lock (resulting in a crash or a never-ending wait), or a
+ // deadlock between any two mutexes. So we must return `true` for any of:
+ // - The main profiler mutex, used by most functions, and/or
+ // - The buffer mutex, used directly in some functions without locking the
+ // main mutex, e.g., marker-related functions.
+ // - The ProfilerParent or ProfilerChild mutex, used to store and process
+ // buffer chunk updates.
+ return PSAutoLock::IsLockedOnCurrentThread() ||
+ ThreadRegistry::IsRegistryMutexLockedOnCurrentThread() ||
+ ThreadRegistration::IsDataMutexLockedOnCurrentThread() ||
+ profiler_get_core_buffer().IsThreadSafeAndLockedOnCurrentThread() ||
+ ProfilerParent::IsLockedOnCurrentThread() ||
+ ProfilerChild::IsLockedOnCurrentThread();
+}
+
+void profiler_set_js_context(JSContext* aCx) {
+ MOZ_ASSERT(aCx);
+ ThreadRegistration::WithOnThreadRef(
+ [&](ThreadRegistration::OnThreadRef aOnThreadRef) {
+ // The profiler mutex must be locked before the ThreadRegistration's.
+ PSAutoLock lock;
+ aOnThreadRef.WithLockedRWOnThread(
+ [&](ThreadRegistration::LockedRWOnThread& aThreadData) {
+ aThreadData.SetJSContext(aCx);
+
+ if (!ActivePS::Exists(lock) || !ActivePS::FeatureJS(lock)) {
+ return;
+ }
+
+ // This call is on-thread, so we can call PollJSSampling() to
+ // start JS sampling immediately.
+ aThreadData.PollJSSampling();
+
+ if (ProfiledThreadData* profiledThreadData =
+ aThreadData.GetProfiledThreadData(lock);
+ profiledThreadData) {
+ profiledThreadData->NotifyReceivedJSContext(
+ ActivePS::Buffer(lock).BufferRangeEnd());
+ }
+ });
+ });
+}
+
+void profiler_clear_js_context() {
+ MOZ_RELEASE_ASSERT(CorePS::Exists());
+
+ ThreadRegistration::WithOnThreadRef(
+ [](ThreadRegistration::OnThreadRef aOnThreadRef) {
+ JSContext* cx =
+ aOnThreadRef.UnlockedReaderAndAtomicRWOnThreadCRef().GetJSContext();
+ if (!cx) {
+ return;
+ }
+
+ // The profiler mutex must be locked before the ThreadRegistration's.
+ PSAutoLock lock;
+ ThreadRegistration::OnThreadRef::RWOnThreadWithLock lockedThreadData =
+ aOnThreadRef.GetLockedRWOnThread();
+
+ if (ProfiledThreadData* profiledThreadData =
+ lockedThreadData->GetProfiledThreadData(lock);
+ profiledThreadData && ActivePS::Exists(lock) &&
+ ActivePS::FeatureJS(lock)) {
+ profiledThreadData->NotifyAboutToLoseJSContext(
+ cx, CorePS::ProcessStartTime(), ActivePS::Buffer(lock));
+
+ // Notify the JS context that profiling for this context has
+ // stopped. Do this by calling StopJSSampling and PollJSSampling
+ // before nulling out the JSContext.
+ lockedThreadData->StopJSSampling();
+ lockedThreadData->PollJSSampling();
+
+ lockedThreadData->ClearJSContext();
+
+ // Tell the thread that we'd like to have JS sampling on this
+ // thread again, once it gets a new JSContext (if ever).
+ lockedThreadData->StartJSSampling(ActivePS::JSFlags(lock));
+ } else {
+ // This thread is not being profiled or JS profiling is off, we only
+ // need to clear the context pointer.
+ lockedThreadData->ClearJSContext();
+ }
+ });
+}
+
+static void profiler_suspend_and_sample_thread(
+ const PSAutoLock* aLockIfAsynchronousSampling,
+ const ThreadRegistration::UnlockedReaderAndAtomicRWOnThread& aThreadData,
+ JsFrame* aJsFrames, uint32_t aFeatures, ProfilerStackCollector& aCollector,
+ bool aSampleNative) {
+ const ThreadRegistrationInfo& info = aThreadData.Info();
+
+ if (info.IsMainThread()) {
+ aCollector.SetIsMainThread();
+ }
+
+ // Allocate the space for the native stack
+ NativeStack nativeStack;
+
+ auto collectStack = [&](const Registers& aRegs, const TimeStamp& aNow) {
+ // The target thread is now suspended. Collect a native backtrace,
+ // and call the callback.
+ StackWalkControl* stackWalkControlIfSupported = nullptr;
+#if defined(HAVE_FASTINIT_NATIVE_UNWIND)
+ StackWalkControl stackWalkControl;
+ if constexpr (StackWalkControl::scIsSupported) {
+ if (aSampleNative) {
+ stackWalkControlIfSupported = &stackWalkControl;
+ }
+ }
+#endif
+ const uint32_t jsFramesCount =
+ aJsFrames ? ExtractJsFrames(!aLockIfAsynchronousSampling, aThreadData,
+ aRegs, aCollector, aJsFrames,
+ stackWalkControlIfSupported)
+ : 0;
+
+#if defined(HAVE_FASTINIT_NATIVE_UNWIND)
+ if (aSampleNative) {
+ // We can only use FramePointerStackWalk or MozStackWalk from
+ // suspend_and_sample_thread as other stackwalking methods may not be
+ // initialized.
+# if defined(USE_FRAME_POINTER_STACK_WALK)
+ DoFramePointerBacktrace(aThreadData, aRegs, nativeStack,
+ stackWalkControlIfSupported);
+# elif defined(USE_MOZ_STACK_WALK)
+ DoMozStackWalkBacktrace(aThreadData, aRegs, nativeStack,
+ stackWalkControlIfSupported);
+# else
+# error "Invalid configuration"
+# endif
+
+ MergeStacks(aFeatures, !aLockIfAsynchronousSampling, aThreadData, aRegs,
+ nativeStack, aCollector, aJsFrames, jsFramesCount);
+ } else
+#endif
+ {
+ MergeStacks(aFeatures, !aLockIfAsynchronousSampling, aThreadData, aRegs,
+ nativeStack, aCollector, aJsFrames, jsFramesCount);
+
+ aCollector.CollectNativeLeafAddr((void*)aRegs.mPC);
+ }
+ };
+
+ if (!aLockIfAsynchronousSampling) {
+ // Sampling the current thread, do NOT suspend it!
+ Registers regs;
+#if defined(HAVE_NATIVE_UNWIND)
+ REGISTERS_SYNC_POPULATE(regs);
+#else
+ regs.Clear();
+#endif
+ collectStack(regs, TimeStamp::Now());
+ } else {
+ // Suspend, sample, and then resume the target thread.
+ Sampler sampler(*aLockIfAsynchronousSampling);
+ TimeStamp now = TimeStamp::Now();
+ sampler.SuspendAndSampleAndResumeThread(*aLockIfAsynchronousSampling,
+ aThreadData, now, collectStack);
+
+ // NOTE: Make sure to disable the sampler before it is destroyed, in
+ // case the profiler is running at the same time.
+ sampler.Disable(*aLockIfAsynchronousSampling);
+ }
+}
+
+// NOTE: aCollector's methods will be called while the target thread is paused.
+// Doing things in those methods like allocating -- which may try to claim
+// locks -- is a surefire way to deadlock.
+void profiler_suspend_and_sample_thread(ProfilerThreadId aThreadId,
+ uint32_t aFeatures,
+ ProfilerStackCollector& aCollector,
+ bool aSampleNative /* = true */) {
+ if (!aThreadId.IsSpecified() || aThreadId == profiler_current_thread_id()) {
+ // Sampling the current thread. Get its information from the TLS (no locking
+ // required.)
+ ThreadRegistration::WithOnThreadRef(
+ [&](ThreadRegistration::OnThreadRef aOnThreadRef) {
+ aOnThreadRef.WithUnlockedReaderAndAtomicRWOnThread(
+ [&](const ThreadRegistration::UnlockedReaderAndAtomicRWOnThread&
+ aThreadData) {
+ if (!aThreadData.GetJSContext()) {
+ // No JSContext, there is no JS frame buffer (and no need for
+ // it).
+ profiler_suspend_and_sample_thread(
+ /* aLockIfAsynchronousSampling = */ nullptr, aThreadData,
+ /* aJsFrames = */ nullptr, aFeatures, aCollector,
+ aSampleNative);
+ } else {
+ // JSContext is present, we need to lock the thread data to
+ // access the JS frame buffer.
+ aOnThreadRef.WithConstLockedRWOnThread(
+ [&](const ThreadRegistration::LockedRWOnThread&
+ aLockedThreadData) {
+ profiler_suspend_and_sample_thread(
+ /* aLockIfAsynchronousSampling = */ nullptr,
+ aThreadData, aLockedThreadData.GetJsFrameBuffer(),
+ aFeatures, aCollector, aSampleNative);
+ });
+ }
+ });
+ });
+ } else {
+ // Lock the profiler before accessing the ThreadRegistry.
+ PSAutoLock lock;
+ ThreadRegistry::WithOffThreadRef(
+ aThreadId, [&](ThreadRegistry::OffThreadRef aOffThreadRef) {
+ aOffThreadRef.WithLockedRWFromAnyThread(
+ [&](const ThreadRegistration::UnlockedReaderAndAtomicRWOnThread&
+ aThreadData) {
+ JsFrameBuffer& jsFrames = CorePS::JsFrames(lock);
+ profiler_suspend_and_sample_thread(&lock, aThreadData, jsFrames,
+ aFeatures, aCollector,
+ aSampleNative);
+ });
+ });
+ }
+}
+
+// END externally visible functions
+////////////////////////////////////////////////////////////////////////
diff --git a/tools/profiler/core/platform.h b/tools/profiler/core/platform.h
new file mode 100644
index 0000000000..59d2c7ff42
--- /dev/null
+++ b/tools/profiler/core/platform.h
@@ -0,0 +1,381 @@
+// Copyright (c) 2006-2011 The Chromium Authors. 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.
+
+#ifndef TOOLS_PLATFORM_H_
+#define TOOLS_PLATFORM_H_
+
+#include "PlatformMacros.h"
+
+#include "json/json.h"
+#include "mozilla/Atomics.h"
+#include "mozilla/BaseProfilerDetail.h"
+#include "mozilla/Logging.h"
+#include "mozilla/MathAlgorithms.h"
+#include "mozilla/ProfileBufferEntrySerialization.h"
+#include "mozilla/ProfileJSONWriter.h"
+#include "mozilla/ProfilerUtils.h"
+#include "mozilla/ProgressLogger.h"
+#include "mozilla/TimeStamp.h"
+#include "mozilla/UniquePtr.h"
+#include "mozilla/Vector.h"
+#include "nsString.h"
+#include "shared-libraries.h"
+
+#include <cstddef>
+#include <cstdint>
+#include <functional>
+
+class ProfilerCodeAddressService;
+
+namespace mozilla {
+struct SymbolTable;
+}
+
+extern mozilla::LazyLogModule gProfilerLog;
+
+// These are for MOZ_LOG="prof:3" or higher. It's the default logging level for
+// the profiler, and should be used sparingly.
+#define LOG_TEST MOZ_LOG_TEST(gProfilerLog, mozilla::LogLevel::Info)
+#define LOG(arg, ...) \
+ MOZ_LOG(gProfilerLog, mozilla::LogLevel::Info, \
+ ("[%" PRIu64 "] " arg, \
+ uint64_t(profiler_current_process_id().ToNumber()), ##__VA_ARGS__))
+
+// These are for MOZ_LOG="prof:4" or higher. It should be used for logging that
+// is somewhat more verbose than LOG.
+#define DEBUG_LOG_TEST MOZ_LOG_TEST(gProfilerLog, mozilla::LogLevel::Debug)
+#define DEBUG_LOG(arg, ...) \
+ MOZ_LOG(gProfilerLog, mozilla::LogLevel::Debug, \
+ ("[%" PRIu64 "] " arg, \
+ uint64_t(profiler_current_process_id().ToNumber()), ##__VA_ARGS__))
+
+typedef uint8_t* Address;
+
+// Stringify the given JSON value, in the most compact format.
+// Note: Numbers are limited to a precision of 6 decimal digits, so that
+// timestamps in ms have a precision in ns.
+Json::String ToCompactString(const Json::Value& aJsonValue);
+
+// Profiling log stored in a Json::Value. The actual log only exists while the
+// profiler is running, and will be inserted at the end of the JSON profile.
+class ProfilingLog {
+ public:
+ // These will be called by ActivePS when the profiler starts/stops.
+ static void Init();
+ static void Destroy();
+
+ // Access the profiling log JSON object, in order to modify it.
+ // Only calls the given function if the profiler is active.
+ // Thread-safe. But `aF` must not call other locking profiler functions.
+ // This is intended to capture some internal logging that doesn't belong in
+ // other places like markers. The log is accessible through the JS console on
+ // profiler.firefox.com, in the `profile.profilingLog` object; the data format
+ // is intentionally not defined, and not intended to be shown in the
+ // front-end.
+ // Please use caution not to output too much data.
+ template <typename F>
+ static void Access(F&& aF) {
+ mozilla::baseprofiler::detail::BaseProfilerAutoLock lock{gMutex};
+ if (gLog) {
+ std::forward<F>(aF)(*gLog);
+ }
+ }
+
+#define DURATION_JSON_SUFFIX "_ms"
+
+ // Convert a TimeDuration to the value to be stored in the log.
+ // Use DURATION_JSON_SUFFIX as suffix in the property name.
+ static Json::Value Duration(const mozilla::TimeDuration& aDuration) {
+ return Json::Value{aDuration.ToMilliseconds()};
+ }
+
+#define TIMESTAMP_JSON_SUFFIX "_TSms"
+
+ // Convert a TimeStamp to the value to be stored in the log.
+ // Use TIMESTAMP_JSON_SUFFIX as suffix in the property name.
+ static Json::Value Timestamp(
+ const mozilla::TimeStamp& aTimestamp = mozilla::TimeStamp::Now()) {
+ if (aTimestamp.IsNull()) {
+ return Json::Value{0.0};
+ }
+ return Duration(aTimestamp - mozilla::TimeStamp::ProcessCreation());
+ }
+
+ static bool IsLockedOnCurrentThread();
+
+ private:
+ static mozilla::baseprofiler::detail::BaseProfilerMutex gMutex;
+ static mozilla::UniquePtr<Json::Value> gLog;
+};
+
+// ----------------------------------------------------------------------------
+// Miscellaneous
+
+// If positive, skip stack-sampling in the sampler thread loop.
+// Users should increment it atomically when samplings should be avoided, and
+// later decrement it back. Multiple uses can overlap.
+// There could be a sampling in progress when this is first incremented, so if
+// it is critical to prevent any sampling, lock the profiler mutex instead.
+// Relaxed ordering, because it's used to request that the profiler pause
+// future sampling; this is not time critical, nor dependent on anything else.
+extern mozilla::Atomic<int, mozilla::MemoryOrdering::Relaxed> gSkipSampling;
+
+void AppendSharedLibraries(mozilla::JSONWriter& aWriter,
+ const SharedLibraryInfo& aInfo);
+
+// Convert the array of strings to a bitfield.
+uint32_t ParseFeaturesFromStringArray(const char** aFeatures,
+ uint32_t aFeatureCount,
+ bool aIsStartup = false);
+
+// Add the begin/end 'Awake' markers for the thread.
+void profiler_mark_thread_awake();
+
+void profiler_mark_thread_asleep();
+
+[[nodiscard]] bool profiler_get_profile_json(
+ SpliceableChunkedJSONWriter& aSpliceableChunkedJSONWriter,
+ double aSinceTime, bool aIsShuttingDown,
+ mozilla::ProgressLogger aProgressLogger);
+
+// Flags to conveniently track various JS instrumentations.
+enum class JSInstrumentationFlags {
+ StackSampling = 0x1,
+ Allocations = 0x2,
+};
+
+// Write out the information of the active profiling configuration.
+void profiler_write_active_configuration(mozilla::JSONWriter& aWriter);
+
+// Extract all received exit profiles that have not yet expired (i.e., they
+// still intersect with this process' buffer range).
+mozilla::Vector<nsCString> profiler_move_exit_profiles();
+
+// If the "MOZ_PROFILER_SYMBOLICATE" env-var is set, we return a new
+// ProfilerCodeAddressService object to use for local symbolication of profiles.
+// This is off by default, and mainly intended for local development.
+mozilla::UniquePtr<ProfilerCodeAddressService>
+profiler_code_address_service_for_presymbolication();
+
+extern "C" {
+// This function is defined in the profiler rust module at
+// tools/profiler/rust-helper. mozilla::SymbolTable and CompactSymbolTable
+// have identical memory layout.
+bool profiler_get_symbol_table(const char* debug_path, const char* breakpad_id,
+ mozilla::SymbolTable* symbol_table);
+
+bool profiler_demangle_rust(const char* mangled, char* buffer, size_t len);
+}
+
+// For each running times value, call MACRO(index, name, unit, jsonProperty)
+#define PROFILER_FOR_EACH_RUNNING_TIME(MACRO) \
+ MACRO(0, ThreadCPU, Delta, threadCPUDelta)
+
+// This class contains all "running times" such as CPU usage measurements.
+// All measurements are listed in `PROFILER_FOR_EACH_RUNNING_TIME` above.
+// Each measurement is optional and only takes a value when explicitly set.
+// Two RunningTimes object may be subtracted, to get the difference between
+// known values.
+class RunningTimes {
+ public:
+ constexpr RunningTimes() = default;
+
+ // Constructor with only a timestamp, useful when no measurements will be
+ // taken.
+ constexpr explicit RunningTimes(const mozilla::TimeStamp& aTimeStamp)
+ : mPostMeasurementTimeStamp(aTimeStamp) {}
+
+ constexpr void Clear() { *this = RunningTimes{}; }
+
+ constexpr bool IsEmpty() const { return mKnownBits == 0; }
+
+ // This should be called right after CPU measurements have been taken.
+ void SetPostMeasurementTimeStamp(const mozilla::TimeStamp& aTimeStamp) {
+ mPostMeasurementTimeStamp = aTimeStamp;
+ }
+
+ const mozilla::TimeStamp& PostMeasurementTimeStamp() const {
+ return mPostMeasurementTimeStamp;
+ }
+
+ // Should be filled for any registered thread.
+
+#define RUNNING_TIME_MEMBER(index, name, unit, jsonProperty) \
+ constexpr bool Is##name##unit##Known() const { \
+ return (mKnownBits & mGot##name##unit) != 0; \
+ } \
+ \
+ constexpr void Clear##name##unit() { \
+ m##name##unit = 0; \
+ mKnownBits &= ~mGot##name##unit; \
+ } \
+ \
+ constexpr void Reset##name##unit(uint64_t a##name##unit) { \
+ m##name##unit = a##name##unit; \
+ mKnownBits |= mGot##name##unit; \
+ } \
+ \
+ constexpr void Set##name##unit(uint64_t a##name##unit) { \
+ MOZ_ASSERT(!Is##name##unit##Known(), #name #unit " already set"); \
+ Reset##name##unit(a##name##unit); \
+ } \
+ \
+ constexpr mozilla::Maybe<uint64_t> Get##name##unit() const { \
+ if (Is##name##unit##Known()) { \
+ return mozilla::Some(m##name##unit); \
+ } \
+ return mozilla::Nothing{}; \
+ } \
+ \
+ constexpr mozilla::Maybe<uint64_t> GetJson##name##unit() const { \
+ if (Is##name##unit##Known()) { \
+ return mozilla::Some(ConvertRawToJson(m##name##unit)); \
+ } \
+ return mozilla::Nothing{}; \
+ }
+
+ PROFILER_FOR_EACH_RUNNING_TIME(RUNNING_TIME_MEMBER)
+
+#undef RUNNING_TIME_MEMBER
+
+ // Take values from another RunningTimes.
+ RunningTimes& TakeFrom(RunningTimes& aOther) {
+ if (!aOther.IsEmpty()) {
+#define RUNNING_TIME_TAKE(index, name, unit, jsonProperty) \
+ if (aOther.Is##name##unit##Known()) { \
+ Set##name##unit(std::exchange(aOther.m##name##unit, 0)); \
+ }
+
+ PROFILER_FOR_EACH_RUNNING_TIME(RUNNING_TIME_TAKE)
+
+#undef RUNNING_TIME_TAKE
+
+ aOther.mKnownBits = 0;
+ }
+ return *this;
+ }
+
+ // Difference from `aBefore` to `this`. Any unknown makes the result unknown.
+ // PostMeasurementTimeStamp set to `this` PostMeasurementTimeStamp, to keep
+ // the most recent timestamp associated with the end of the interval over
+ // which the difference applies.
+ RunningTimes operator-(const RunningTimes& aBefore) const {
+ RunningTimes diff;
+ diff.mPostMeasurementTimeStamp = mPostMeasurementTimeStamp;
+#define RUNNING_TIME_SUB(index, name, unit, jsonProperty) \
+ if (Is##name##unit##Known() && aBefore.Is##name##unit##Known()) { \
+ diff.Set##name##unit(m##name##unit - aBefore.m##name##unit); \
+ }
+
+ PROFILER_FOR_EACH_RUNNING_TIME(RUNNING_TIME_SUB)
+
+#undef RUNNING_TIME_SUB
+ return diff;
+ }
+
+ private:
+ friend mozilla::ProfileBufferEntryWriter::Serializer<RunningTimes>;
+ friend mozilla::ProfileBufferEntryReader::Deserializer<RunningTimes>;
+
+ // Platform-dependent.
+ static uint64_t ConvertRawToJson(uint64_t aRawValue);
+
+ mozilla::TimeStamp mPostMeasurementTimeStamp;
+
+ uint32_t mKnownBits = 0u;
+
+#define RUNNING_TIME_MEMBER(index, name, unit, jsonProperty) \
+ static constexpr uint32_t mGot##name##unit = 1u << index; \
+ uint64_t m##name##unit = 0;
+
+ PROFILER_FOR_EACH_RUNNING_TIME(RUNNING_TIME_MEMBER)
+
+#undef RUNNING_TIME_MEMBER
+};
+
+template <>
+struct mozilla::ProfileBufferEntryWriter::Serializer<RunningTimes> {
+ static Length Bytes(const RunningTimes& aRunningTimes) {
+ Length bytes = 0;
+
+#define RUNNING_TIME_SERIALIZATION_BYTES(index, name, unit, jsonProperty) \
+ if (aRunningTimes.Is##name##unit##Known()) { \
+ bytes += ULEB128Size(aRunningTimes.m##name##unit); \
+ }
+
+ PROFILER_FOR_EACH_RUNNING_TIME(RUNNING_TIME_SERIALIZATION_BYTES)
+
+#undef RUNNING_TIME_SERIALIZATION_BYTES
+ return ULEB128Size(aRunningTimes.mKnownBits) + bytes;
+ }
+
+ static void Write(ProfileBufferEntryWriter& aEW,
+ const RunningTimes& aRunningTimes) {
+ aEW.WriteULEB128(aRunningTimes.mKnownBits);
+
+#define RUNNING_TIME_SERIALIZE(index, name, unit, jsonProperty) \
+ if (aRunningTimes.Is##name##unit##Known()) { \
+ aEW.WriteULEB128(aRunningTimes.m##name##unit); \
+ }
+
+ PROFILER_FOR_EACH_RUNNING_TIME(RUNNING_TIME_SERIALIZE)
+
+#undef RUNNING_TIME_SERIALIZE
+ }
+};
+
+template <>
+struct mozilla::ProfileBufferEntryReader::Deserializer<RunningTimes> {
+ static void ReadInto(ProfileBufferEntryReader& aER,
+ RunningTimes& aRunningTimes) {
+ aRunningTimes = Read(aER);
+ }
+
+ static RunningTimes Read(ProfileBufferEntryReader& aER) {
+ // Start with empty running times, everything is cleared.
+ RunningTimes times;
+
+ // This sets all the bits into mKnownBits, we don't need to modify it
+ // further.
+ times.mKnownBits = aER.ReadULEB128<uint32_t>();
+
+ // For each member that should be known, read its value.
+#define RUNNING_TIME_DESERIALIZE(index, name, unit, jsonProperty) \
+ if (times.Is##name##unit##Known()) { \
+ times.m##name##unit = aER.ReadULEB128<decltype(times.m##name##unit)>(); \
+ }
+
+ PROFILER_FOR_EACH_RUNNING_TIME(RUNNING_TIME_DESERIALIZE)
+
+#undef RUNNING_TIME_DESERIALIZE
+
+ return times;
+ }
+};
+
+#endif /* ndef TOOLS_PLATFORM_H_ */
diff --git a/tools/profiler/core/shared-libraries-linux.cc b/tools/profiler/core/shared-libraries-linux.cc
new file mode 100644
index 0000000000..2991e64909
--- /dev/null
+++ b/tools/profiler/core/shared-libraries-linux.cc
@@ -0,0 +1,280 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "shared-libraries.h"
+
+#define PATH_MAX_TOSTRING(x) #x
+#define PATH_MAX_STRING(x) PATH_MAX_TOSTRING(x)
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <limits.h>
+#include <unistd.h>
+#include <fstream>
+#include "platform.h"
+#include "shared-libraries.h"
+#include "GeckoProfiler.h"
+#include "mozilla/Sprintf.h"
+#include "mozilla/Unused.h"
+#include "nsDebug.h"
+#include "nsNativeCharsetUtils.h"
+#include <nsTArray.h>
+
+#include "common/linux/file_id.h"
+#include <algorithm>
+#include <dlfcn.h>
+#if defined(GP_OS_linux) || defined(GP_OS_android)
+# include <features.h>
+#endif
+#include <sys/types.h>
+
+#if defined(GP_OS_linux) || defined(GP_OS_android) || defined(GP_OS_freebsd)
+# include <link.h> // dl_phdr_info
+#else
+# error "Unexpected configuration"
+#endif
+
+#if defined(GP_OS_android)
+extern "C" MOZ_EXPORT __attribute__((weak)) int dl_iterate_phdr(
+ int (*callback)(struct dl_phdr_info* info, size_t size, void* data),
+ void* data);
+#endif
+
+struct LoadedLibraryInfo {
+ LoadedLibraryInfo(const char* aName, unsigned long aBaseAddress,
+ unsigned long aFirstMappingStart,
+ unsigned long aLastMappingEnd)
+ : mName(aName),
+ mBaseAddress(aBaseAddress),
+ mFirstMappingStart(aFirstMappingStart),
+ mLastMappingEnd(aLastMappingEnd) {}
+
+ nsCString mName;
+ unsigned long mBaseAddress;
+ unsigned long mFirstMappingStart;
+ unsigned long mLastMappingEnd;
+};
+
+static nsCString IDtoUUIDString(
+ const google_breakpad::wasteful_vector<uint8_t>& aIdentifier) {
+ using namespace google_breakpad;
+
+ nsCString uuid;
+ const std::string str = FileID::ConvertIdentifierToUUIDString(aIdentifier);
+ uuid.Append(str.c_str(), str.size());
+ // This is '0', not '\0', since it represents the breakpad id age.
+ uuid.Append('0');
+ return uuid;
+}
+
+// Return raw Build ID in hex.
+static nsCString IDtoString(
+ const google_breakpad::wasteful_vector<uint8_t>& aIdentifier) {
+ using namespace google_breakpad;
+
+ nsCString uuid;
+ const std::string str = FileID::ConvertIdentifierToString(aIdentifier);
+ uuid.Append(str.c_str(), str.size());
+ return uuid;
+}
+
+// Get the breakpad Id for the binary file pointed by bin_name
+static nsCString getBreakpadId(const char* bin_name) {
+ using namespace google_breakpad;
+
+ PageAllocator allocator;
+ auto_wasteful_vector<uint8_t, kDefaultBuildIdSize> identifier(&allocator);
+
+ FileID file_id(bin_name);
+ if (file_id.ElfFileIdentifier(identifier)) {
+ return IDtoUUIDString(identifier);
+ }
+
+ return ""_ns;
+}
+
+// Get the code Id for the binary file pointed by bin_name
+static nsCString getCodeId(const char* bin_name) {
+ using namespace google_breakpad;
+
+ PageAllocator allocator;
+ auto_wasteful_vector<uint8_t, kDefaultBuildIdSize> identifier(&allocator);
+
+ FileID file_id(bin_name);
+ if (file_id.ElfFileIdentifier(identifier)) {
+ return IDtoString(identifier);
+ }
+
+ return ""_ns;
+}
+
+static SharedLibrary SharedLibraryAtPath(const char* path,
+ unsigned long libStart,
+ unsigned long libEnd,
+ unsigned long offset = 0) {
+ nsAutoString pathStr;
+ mozilla::Unused << NS_WARN_IF(
+ NS_FAILED(NS_CopyNativeToUnicode(nsDependentCString(path), pathStr)));
+
+ nsAutoString nameStr = pathStr;
+ int32_t pos = nameStr.RFindChar('/');
+ if (pos != kNotFound) {
+ nameStr.Cut(0, pos + 1);
+ }
+
+ return SharedLibrary(libStart, libEnd, offset, getBreakpadId(path),
+ getCodeId(path), nameStr, pathStr, nameStr, pathStr,
+ ""_ns, "");
+}
+
+static int dl_iterate_callback(struct dl_phdr_info* dl_info, size_t size,
+ void* data) {
+ auto libInfoList = reinterpret_cast<nsTArray<LoadedLibraryInfo>*>(data);
+
+ if (dl_info->dlpi_phnum <= 0) return 0;
+
+ unsigned long baseAddress = dl_info->dlpi_addr;
+ unsigned long firstMappingStart = -1;
+ unsigned long lastMappingEnd = 0;
+
+ for (size_t i = 0; i < dl_info->dlpi_phnum; i++) {
+ if (dl_info->dlpi_phdr[i].p_type != PT_LOAD) {
+ continue;
+ }
+ unsigned long start = dl_info->dlpi_addr + dl_info->dlpi_phdr[i].p_vaddr;
+ unsigned long end = start + dl_info->dlpi_phdr[i].p_memsz;
+ if (start < firstMappingStart) {
+ firstMappingStart = start;
+ }
+ if (end > lastMappingEnd) {
+ lastMappingEnd = end;
+ }
+ }
+
+ libInfoList->AppendElement(LoadedLibraryInfo(
+ dl_info->dlpi_name, baseAddress, firstMappingStart, lastMappingEnd));
+
+ return 0;
+}
+
+SharedLibraryInfo SharedLibraryInfo::GetInfoForSelf() {
+ SharedLibraryInfo info;
+
+#if defined(GP_OS_linux)
+ // We need to find the name of the executable (exeName, exeNameLen) and the
+ // address of its executable section (exeExeAddr) in the running image.
+ char exeName[PATH_MAX];
+ memset(exeName, 0, sizeof(exeName));
+
+ ssize_t exeNameLen = readlink("/proc/self/exe", exeName, sizeof(exeName) - 1);
+ if (exeNameLen == -1) {
+ // readlink failed for whatever reason. Note this, but keep going.
+ exeName[0] = '\0';
+ exeNameLen = 0;
+ LOG("SharedLibraryInfo::GetInfoForSelf(): readlink failed");
+ } else {
+ // Assert no buffer overflow.
+ MOZ_RELEASE_ASSERT(exeNameLen >= 0 &&
+ exeNameLen < static_cast<ssize_t>(sizeof(exeName)));
+ }
+
+ unsigned long exeExeAddr = 0;
+#endif
+
+#if defined(GP_OS_android)
+ // If dl_iterate_phdr doesn't exist, we give up immediately.
+ if (!dl_iterate_phdr) {
+ // On ARM Android, dl_iterate_phdr is provided by the custom linker.
+ // So if libxul was loaded by the system linker (e.g. as part of
+ // xpcshell when running tests), it won't be available and we should
+ // not call it.
+ return info;
+ }
+#endif
+
+#if defined(GP_OS_linux) || defined(GP_OS_android)
+ // Read info from /proc/self/maps. We ignore most of it.
+ pid_t pid = profiler_current_process_id().ToNumber();
+ char path[PATH_MAX];
+ SprintfLiteral(path, "/proc/%d/maps", pid);
+ std::ifstream maps(path);
+ std::string line;
+ while (std::getline(maps, line)) {
+ int ret;
+ unsigned long start;
+ unsigned long end;
+ char perm[6 + 1] = "";
+ unsigned long offset;
+ char modulePath[PATH_MAX + 1] = "";
+ ret = sscanf(line.c_str(),
+ "%lx-%lx %6s %lx %*s %*x %" PATH_MAX_STRING(PATH_MAX) "s\n",
+ &start, &end, perm, &offset, modulePath);
+ if (!strchr(perm, 'x')) {
+ // Ignore non executable entries
+ continue;
+ }
+ if (ret != 5 && ret != 4) {
+ LOG("SharedLibraryInfo::GetInfoForSelf(): "
+ "reading /proc/self/maps failed");
+ continue;
+ }
+
+# if defined(GP_OS_linux)
+ // Try to establish the main executable's load address.
+ if (exeNameLen > 0 && strcmp(modulePath, exeName) == 0) {
+ exeExeAddr = start;
+ }
+# elif defined(GP_OS_android)
+ // Use /proc/pid/maps to get the dalvik-jit section since it has no
+ // associated phdrs.
+ if (0 == strcmp(modulePath, "/dev/ashmem/dalvik-jit-code-cache")) {
+ info.AddSharedLibrary(
+ SharedLibraryAtPath(modulePath, start, end, offset));
+ if (info.GetSize() > 10000) {
+ LOG("SharedLibraryInfo::GetInfoForSelf(): "
+ "implausibly large number of mappings acquired");
+ break;
+ }
+ }
+# endif
+ }
+#endif
+
+ nsTArray<LoadedLibraryInfo> libInfoList;
+
+ // We collect the bulk of the library info using dl_iterate_phdr.
+ dl_iterate_phdr(dl_iterate_callback, &libInfoList);
+
+ for (const auto& libInfo : libInfoList) {
+ info.AddSharedLibrary(
+ SharedLibraryAtPath(libInfo.mName.get(), libInfo.mFirstMappingStart,
+ libInfo.mLastMappingEnd,
+ libInfo.mFirstMappingStart - libInfo.mBaseAddress));
+ }
+
+#if defined(GP_OS_linux)
+ // Make another pass over the information we just harvested from
+ // dl_iterate_phdr. If we see a nameless object mapped at what we earlier
+ // established to be the main executable's load address, attach the
+ // executable's name to that entry.
+ for (size_t i = 0; i < info.GetSize(); i++) {
+ SharedLibrary& lib = info.GetMutableEntry(i);
+ if (lib.GetStart() <= exeExeAddr && exeExeAddr <= lib.GetEnd() &&
+ lib.GetNativeDebugPath().empty()) {
+ lib = SharedLibraryAtPath(exeName, lib.GetStart(), lib.GetEnd(),
+ lib.GetOffset());
+
+ // We only expect to see one such entry.
+ break;
+ }
+ }
+#endif
+
+ return info;
+}
+
+void SharedLibraryInfo::Initialize() { /* do nothing */
+}
diff --git a/tools/profiler/core/shared-libraries-macos.cc b/tools/profiler/core/shared-libraries-macos.cc
new file mode 100644
index 0000000000..415fda3633
--- /dev/null
+++ b/tools/profiler/core/shared-libraries-macos.cc
@@ -0,0 +1,211 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "shared-libraries.h"
+
+#include "ClearOnShutdown.h"
+#include "mozilla/StaticMutex.h"
+#include "mozilla/Unused.h"
+#include "nsNativeCharsetUtils.h"
+#include <AvailabilityMacros.h>
+
+#include <dlfcn.h>
+#include <mach-o/arch.h>
+#include <mach-o/dyld_images.h>
+#include <mach-o/dyld.h>
+#include <mach-o/loader.h>
+#include <mach/mach_init.h>
+#include <mach/mach_traps.h>
+#include <mach/task_info.h>
+#include <mach/task.h>
+#include <sstream>
+#include <stdlib.h>
+#include <string.h>
+#include <vector>
+
+// Architecture specific abstraction.
+#if defined(GP_ARCH_x86)
+typedef mach_header platform_mach_header;
+typedef segment_command mach_segment_command_type;
+# define MACHO_MAGIC_NUMBER MH_MAGIC
+# define CMD_SEGMENT LC_SEGMENT
+# define seg_size uint32_t
+#else
+typedef mach_header_64 platform_mach_header;
+typedef segment_command_64 mach_segment_command_type;
+# define MACHO_MAGIC_NUMBER MH_MAGIC_64
+# define CMD_SEGMENT LC_SEGMENT_64
+# define seg_size uint64_t
+#endif
+
+struct NativeSharedLibrary {
+ const platform_mach_header* header;
+ std::string path;
+};
+static std::vector<NativeSharedLibrary>* sSharedLibrariesList = nullptr;
+static mozilla::StaticMutex sSharedLibrariesMutex MOZ_UNANNOTATED;
+
+static void SharedLibraryAddImage(const struct mach_header* mh,
+ intptr_t vmaddr_slide) {
+ // NOTE: Presumably for backwards-compatibility reasons, this function accepts
+ // a mach_header even on 64-bit where it ought to be a mach_header_64. We cast
+ // it to the right type here.
+ auto header = reinterpret_cast<const platform_mach_header*>(mh);
+
+ Dl_info info;
+ if (!dladdr(header, &info)) {
+ return;
+ }
+
+ mozilla::StaticMutexAutoLock lock(sSharedLibrariesMutex);
+ if (!sSharedLibrariesList) {
+ return;
+ }
+
+ NativeSharedLibrary lib = {header, info.dli_fname};
+ sSharedLibrariesList->push_back(lib);
+}
+
+static void SharedLibraryRemoveImage(const struct mach_header* mh,
+ intptr_t vmaddr_slide) {
+ // NOTE: Presumably for backwards-compatibility reasons, this function accepts
+ // a mach_header even on 64-bit where it ought to be a mach_header_64. We cast
+ // it to the right type here.
+ auto header = reinterpret_cast<const platform_mach_header*>(mh);
+
+ mozilla::StaticMutexAutoLock lock(sSharedLibrariesMutex);
+ if (!sSharedLibrariesList) {
+ return;
+ }
+
+ uint32_t count = sSharedLibrariesList->size();
+ for (uint32_t i = 0; i < count; ++i) {
+ if ((*sSharedLibrariesList)[i].header == header) {
+ sSharedLibrariesList->erase(sSharedLibrariesList->begin() + i);
+ return;
+ }
+ }
+}
+
+void SharedLibraryInfo::Initialize() {
+ // NOTE: We intentionally leak this memory here. We're allocating dynamically
+ // in order to avoid static initializers.
+ sSharedLibrariesList = new std::vector<NativeSharedLibrary>();
+
+ _dyld_register_func_for_add_image(SharedLibraryAddImage);
+ _dyld_register_func_for_remove_image(SharedLibraryRemoveImage);
+}
+
+static void addSharedLibrary(const platform_mach_header* header,
+ const char* path, SharedLibraryInfo& info) {
+ const struct load_command* cmd =
+ reinterpret_cast<const struct load_command*>(header + 1);
+
+ seg_size size = 0;
+ unsigned long long start = reinterpret_cast<unsigned long long>(header);
+ // Find the cmd segment in the macho image. It will contain the offset we care
+ // about.
+ const uint8_t* uuid_bytes = nullptr;
+ for (unsigned int i = 0;
+ cmd && (i < header->ncmds) && (uuid_bytes == nullptr || size == 0);
+ ++i) {
+ if (cmd->cmd == CMD_SEGMENT) {
+ const mach_segment_command_type* seg =
+ reinterpret_cast<const mach_segment_command_type*>(cmd);
+
+ if (!strcmp(seg->segname, "__TEXT")) {
+ size = seg->vmsize;
+ }
+ } else if (cmd->cmd == LC_UUID) {
+ const uuid_command* ucmd = reinterpret_cast<const uuid_command*>(cmd);
+ uuid_bytes = ucmd->uuid;
+ }
+
+ cmd = reinterpret_cast<const struct load_command*>(
+ reinterpret_cast<const char*>(cmd) + cmd->cmdsize);
+ }
+
+ nsAutoCString uuid;
+ nsAutoCString breakpadId;
+ if (uuid_bytes != nullptr) {
+ uuid.AppendPrintf(
+ "%02X"
+ "%02X"
+ "%02X"
+ "%02X"
+ "%02X"
+ "%02X"
+ "%02X"
+ "%02X"
+ "%02X"
+ "%02X"
+ "%02X"
+ "%02X"
+ "%02X"
+ "%02X"
+ "%02X"
+ "%02X",
+ uuid_bytes[0], uuid_bytes[1], uuid_bytes[2], uuid_bytes[3],
+ uuid_bytes[4], uuid_bytes[5], uuid_bytes[6], uuid_bytes[7],
+ uuid_bytes[8], uuid_bytes[9], uuid_bytes[10], uuid_bytes[11],
+ uuid_bytes[12], uuid_bytes[13], uuid_bytes[14], uuid_bytes[15]);
+
+ // Breakpad id is the same as the uuid but with the additional trailing 0
+ // for the breakpad id age.
+ breakpadId.AppendPrintf(
+ "%s"
+ "0" /* breakpad id age */,
+ uuid.get());
+ }
+
+ nsAutoString pathStr;
+ mozilla::Unused << NS_WARN_IF(
+ NS_FAILED(NS_CopyNativeToUnicode(nsDependentCString(path), pathStr)));
+
+ nsAutoString nameStr = pathStr;
+ int32_t pos = nameStr.RFindChar('/');
+ if (pos != kNotFound) {
+ nameStr.Cut(0, pos + 1);
+ }
+
+ const NXArchInfo* archInfo =
+ NXGetArchInfoFromCpuType(header->cputype, header->cpusubtype);
+
+ info.AddSharedLibrary(SharedLibrary(start, start + size, 0, breakpadId, uuid,
+ nameStr, pathStr, nameStr, pathStr, ""_ns,
+ archInfo ? archInfo->name : ""));
+}
+
+// Translate the statically stored sSharedLibrariesList information into a
+// SharedLibraryInfo object.
+SharedLibraryInfo SharedLibraryInfo::GetInfoForSelf() {
+ mozilla::StaticMutexAutoLock lock(sSharedLibrariesMutex);
+ SharedLibraryInfo sharedLibraryInfo;
+
+ for (auto& info : *sSharedLibrariesList) {
+ addSharedLibrary(info.header, info.path.c_str(), sharedLibraryInfo);
+ }
+
+ // Add the entry for dyld itself.
+ // We only support macOS 10.12+, which corresponds to dyld version 15+.
+ // dyld version 15 added the dyldPath property.
+ task_dyld_info_data_t task_dyld_info;
+ mach_msg_type_number_t count = TASK_DYLD_INFO_COUNT;
+ if (task_info(mach_task_self(), TASK_DYLD_INFO, (task_info_t)&task_dyld_info,
+ &count) != KERN_SUCCESS) {
+ return sharedLibraryInfo;
+ }
+
+ struct dyld_all_image_infos* aii =
+ (struct dyld_all_image_infos*)task_dyld_info.all_image_info_addr;
+ if (aii->version >= 15) {
+ const platform_mach_header* header =
+ reinterpret_cast<const platform_mach_header*>(
+ aii->dyldImageLoadAddress);
+ addSharedLibrary(header, aii->dyldPath, sharedLibraryInfo);
+ }
+
+ return sharedLibraryInfo;
+}
diff --git a/tools/profiler/core/shared-libraries-win32.cc b/tools/profiler/core/shared-libraries-win32.cc
new file mode 100644
index 0000000000..cb0bcd1f41
--- /dev/null
+++ b/tools/profiler/core/shared-libraries-win32.cc
@@ -0,0 +1,167 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include <windows.h>
+
+#include "shared-libraries.h"
+#include "nsWindowsHelpers.h"
+#include "mozilla/NativeNt.h"
+#include "mozilla/WindowsEnumProcessModules.h"
+#include "mozilla/WindowsProcessMitigations.h"
+#include "mozilla/WindowsVersion.h"
+#include "nsPrintfCString.h"
+
+static bool IsModuleUnsafeToLoad(const nsAString& aModuleName) {
+#if defined(_M_AMD64) || defined(_M_IX86)
+ // Hackaround for Bug 1607574. Nvidia's shim driver nvd3d9wrap[x].dll detours
+ // LoadLibraryExW and it causes AV when the following conditions are met.
+ // 1. LoadLibraryExW was called for "detoured.dll"
+ // 2. nvinit[x].dll was unloaded
+ // 3. OS version is older than 6.2
+# if defined(_M_AMD64)
+ LPCWSTR kNvidiaShimDriver = L"nvd3d9wrapx.dll";
+ LPCWSTR kNvidiaInitDriver = L"nvinitx.dll";
+# elif defined(_M_IX86)
+ LPCWSTR kNvidiaShimDriver = L"nvd3d9wrap.dll";
+ LPCWSTR kNvidiaInitDriver = L"nvinit.dll";
+# endif
+ if (aModuleName.LowerCaseEqualsLiteral("detoured.dll") &&
+ !mozilla::IsWin8OrLater() && ::GetModuleHandleW(kNvidiaShimDriver) &&
+ !::GetModuleHandleW(kNvidiaInitDriver)) {
+ return true;
+ }
+#endif // defined(_M_AMD64) || defined(_M_IX86)
+
+ // Hackaround for Bug 1723868. There is no safe way to prevent the module
+ // Microsoft's VP9 Video Decoder from being unloaded because mfplat.dll may
+ // have posted more than one task to unload the module in the work queue
+ // without calling LoadLibrary.
+ if (aModuleName.LowerCaseEqualsLiteral("msvp9dec_store.dll")) {
+ return true;
+ }
+
+ return false;
+}
+
+void AddSharedLibraryFromModuleInfo(SharedLibraryInfo& sharedLibraryInfo,
+ const wchar_t* aModulePath,
+ mozilla::Maybe<HMODULE> aModule) {
+ nsDependentSubstring moduleNameStr(
+ mozilla::nt::GetLeafName(nsDependentString(aModulePath)));
+
+ // If the module is unsafe to call LoadLibraryEx for, we skip.
+ if (IsModuleUnsafeToLoad(moduleNameStr)) {
+ return;
+ }
+
+ // If EAF+ is enabled, parsing ntdll's PE header causes a crash.
+ if (mozilla::IsEafPlusEnabled() &&
+ moduleNameStr.LowerCaseEqualsLiteral("ntdll.dll")) {
+ return;
+ }
+
+ // Load the module again - to make sure that its handle will remain valid as
+ // we attempt to read the PDB information from it - or for the first time if
+ // we only have a path. We want to load the DLL without running the newly
+ // loaded module's DllMain function, but not as a data file because we want
+ // to be able to do RVA computations easily. Hence, we use the flag
+ // LOAD_LIBRARY_AS_IMAGE_RESOURCE which ensures that the sections (not PE
+ // headers) will be relocated by the loader. Otherwise GetPdbInfo() and/or
+ // GetVersionInfo() can cause a crash. If the original handle |aModule| is
+ // valid, LoadLibraryEx just increments its refcount.
+ nsModuleHandle handleLock(
+ ::LoadLibraryExW(aModulePath, NULL, LOAD_LIBRARY_AS_IMAGE_RESOURCE));
+ if (!handleLock) {
+ return;
+ }
+
+ mozilla::nt::PEHeaders headers(handleLock.get());
+ if (!headers) {
+ return;
+ }
+
+ mozilla::Maybe<mozilla::Range<const uint8_t>> bounds = headers.GetBounds();
+ if (!bounds) {
+ return;
+ }
+
+ // Put the original |aModule| into SharedLibrary, but we get debug info
+ // from |handleLock| as |aModule| might be inaccessible.
+ const uintptr_t modStart =
+ aModule.isSome() ? reinterpret_cast<uintptr_t>(*aModule)
+ : reinterpret_cast<uintptr_t>(handleLock.get());
+ const uintptr_t modEnd = modStart + bounds->length();
+
+ nsAutoCString breakpadId;
+ nsAutoString pdbPathStr;
+ if (const auto* debugInfo = headers.GetPdbInfo()) {
+ MOZ_ASSERT(breakpadId.IsEmpty());
+ const GUID& pdbSig = debugInfo->pdbSignature;
+ breakpadId.AppendPrintf(
+ "%08lX" // m0
+ "%04X%04X" // m1,m2
+ "%02X%02X%02X%02X%02X%02X%02X%02X" // m3
+ "%X", // pdbAge
+ pdbSig.Data1, pdbSig.Data2, pdbSig.Data3, pdbSig.Data4[0],
+ pdbSig.Data4[1], pdbSig.Data4[2], pdbSig.Data4[3], pdbSig.Data4[4],
+ pdbSig.Data4[5], pdbSig.Data4[6], pdbSig.Data4[7], debugInfo->pdbAge);
+
+ // The PDB file name could be different from module filename,
+ // so report both
+ // e.g. The PDB for C:\Windows\SysWOW64\ntdll.dll is wntdll.pdb
+ pdbPathStr = NS_ConvertUTF8toUTF16(debugInfo->pdbFileName);
+ }
+
+ nsAutoCString codeId;
+ DWORD timestamp;
+ DWORD imageSize;
+ if (headers.GetTimeStamp(timestamp) && headers.GetImageSize(imageSize)) {
+ codeId.AppendPrintf(
+ "%08lX" // Uppercase 8 digits of hex timestamp with leading zeroes.
+ "%lx", // Lowercase hex image size
+ timestamp, imageSize);
+ }
+
+ nsAutoCString versionStr;
+ uint64_t version;
+ if (headers.GetVersionInfo(version)) {
+ versionStr.AppendPrintf("%u.%u.%u.%u",
+ static_cast<uint32_t>((version >> 48) & 0xFFFFu),
+ static_cast<uint32_t>((version >> 32) & 0xFFFFu),
+ static_cast<uint32_t>((version >> 16) & 0xFFFFu),
+ static_cast<uint32_t>(version & 0xFFFFu));
+ }
+
+ const nsString& pdbNameStr =
+ PromiseFlatString(mozilla::nt::GetLeafName(pdbPathStr));
+ SharedLibrary shlib(modStart, modEnd,
+ 0, // DLLs are always mapped at offset 0 on Windows
+ breakpadId, codeId, PromiseFlatString(moduleNameStr),
+ nsDependentString(aModulePath), pdbNameStr, pdbPathStr,
+ versionStr, "");
+ sharedLibraryInfo.AddSharedLibrary(shlib);
+}
+
+SharedLibraryInfo SharedLibraryInfo::GetInfoForSelf() {
+ SharedLibraryInfo sharedLibraryInfo;
+
+ auto addSharedLibraryFromModuleInfo =
+ [&sharedLibraryInfo](const wchar_t* aModulePath, HMODULE aModule) {
+ AddSharedLibraryFromModuleInfo(sharedLibraryInfo, aModulePath,
+ mozilla::Some(aModule));
+ };
+
+ mozilla::EnumerateProcessModules(addSharedLibraryFromModuleInfo);
+ return sharedLibraryInfo;
+}
+
+SharedLibraryInfo SharedLibraryInfo::GetInfoFromPath(const wchar_t* aPath) {
+ SharedLibraryInfo sharedLibraryInfo;
+ AddSharedLibraryFromModuleInfo(sharedLibraryInfo, aPath, mozilla::Nothing());
+ return sharedLibraryInfo;
+}
+
+void SharedLibraryInfo::Initialize() { /* do nothing */
+}
diff --git a/tools/profiler/core/vtune/ittnotify.h b/tools/profiler/core/vtune/ittnotify.h
new file mode 100644
index 0000000000..f1d65b3328
--- /dev/null
+++ b/tools/profiler/core/vtune/ittnotify.h
@@ -0,0 +1,4123 @@
+/* <copyright>
+ This file is provided under a dual BSD/GPLv2 license. When using or
+ redistributing this file, you may do so under either license.
+
+ GPL LICENSE SUMMARY
+
+ Copyright (c) 2005-2014 Intel Corporation. All rights reserved.
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of version 2 of the GNU General Public License as
+ published by the Free Software Foundation.
+
+ 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, write to the Free Software
+ Foundation, Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
+ The full GNU General Public License is included in this distribution
+ in the file called LICENSE.GPL.
+
+ Contact Information:
+ http://software.intel.com/en-us/articles/intel-vtune-amplifier-xe/
+
+ BSD LICENSE
+
+ Copyright (c) 2005-2014 Intel Corporation. All rights reserved.
+ 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 Intel Corporation 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.
+</copyright> */
+#ifndef _ITTNOTIFY_H_
+#define _ITTNOTIFY_H_
+
+/**
+@file
+@brief Public User API functions and types
+@mainpage
+
+The ITT API is used to annotate a user's program with additional information
+that can be used by correctness and performance tools. The user inserts
+calls in their program. Those calls generate information that is collected
+at runtime, and used by Intel(R) Threading Tools.
+
+@section API Concepts
+The following general concepts are used throughout the API.
+
+@subsection Unicode Support
+Many API functions take character string arguments. On Windows, there
+are two versions of each such function. The function name is suffixed
+by W if Unicode support is enabled, and by A otherwise. Any API function
+that takes a character string argument adheres to this convention.
+
+@subsection Conditional Compilation
+Many users prefer having an option to modify ITT API code when linking it
+inside their runtimes. ITT API header file provides a mechanism to replace
+ITT API function names inside your code with empty strings. To do this,
+define the macros INTEL_NO_ITTNOTIFY_API during compilation and remove the
+static library from the linker script.
+
+@subsection Domains
+[see domains]
+Domains provide a way to separate notification for different modules or
+libraries in a program. Domains are specified by dotted character strings,
+e.g. TBB.Internal.Control.
+
+A mechanism (to be specified) is provided to enable and disable
+domains. By default, all domains are enabled.
+@subsection Named Entities and Instances
+Named entities (frames, regions, tasks, and markers) communicate
+information about the program to the analysis tools. A named entity often
+refers to a section of program code, or to some set of logical concepts
+that the programmer wants to group together.
+
+Named entities relate to the programmer's static view of the program. When
+the program actually executes, many instances of a given named entity
+may be created.
+
+The API annotations denote instances of named entities. The actual
+named entities are displayed using the analysis tools. In other words,
+the named entities come into existence when instances are created.
+
+Instances of named entities may have instance identifiers (IDs). Some
+API calls use instance identifiers to create relationships between
+different instances of named entities. Other API calls associate data
+with instances of named entities.
+
+Some named entities must always have instance IDs. In particular, regions
+and frames always have IDs. Task and markers need IDs only if the ID is
+needed in another API call (such as adding a relation or metadata).
+
+The lifetime of instance IDs is distinct from the lifetime of
+instances. This allows various relationships to be specified separate
+from the actual execution of instances. This flexibility comes at the
+expense of extra API calls.
+
+The same ID may not be reused for different instances, unless a previous
+[ref] __itt_id_destroy call for that ID has been issued.
+*/
+
+/** @cond exclude_from_documentation */
+#ifndef ITT_OS_WIN
+# define ITT_OS_WIN 1
+#endif /* ITT_OS_WIN */
+
+#ifndef ITT_OS_LINUX
+# define ITT_OS_LINUX 2
+#endif /* ITT_OS_LINUX */
+
+#ifndef ITT_OS_MAC
+# define ITT_OS_MAC 3
+#endif /* ITT_OS_MAC */
+
+#ifndef ITT_OS_FREEBSD
+# define ITT_OS_FREEBSD 4
+#endif /* ITT_OS_FREEBSD */
+
+#ifndef ITT_OS
+# if defined WIN32 || defined _WIN32
+# define ITT_OS ITT_OS_WIN
+# elif defined( __APPLE__ ) && defined( __MACH__ )
+# define ITT_OS ITT_OS_MAC
+# elif defined( __FreeBSD__ )
+# define ITT_OS ITT_OS_FREEBSD
+# else
+# define ITT_OS ITT_OS_LINUX
+# endif
+#endif /* ITT_OS */
+
+#ifndef ITT_PLATFORM_WIN
+# define ITT_PLATFORM_WIN 1
+#endif /* ITT_PLATFORM_WIN */
+
+#ifndef ITT_PLATFORM_POSIX
+# define ITT_PLATFORM_POSIX 2
+#endif /* ITT_PLATFORM_POSIX */
+
+#ifndef ITT_PLATFORM_MAC
+# define ITT_PLATFORM_MAC 3
+#endif /* ITT_PLATFORM_MAC */
+
+#ifndef ITT_PLATFORM_FREEBSD
+# define ITT_PLATFORM_FREEBSD 4
+#endif /* ITT_PLATFORM_FREEBSD */
+
+#ifndef ITT_PLATFORM
+# if ITT_OS==ITT_OS_WIN
+# define ITT_PLATFORM ITT_PLATFORM_WIN
+# elif ITT_OS==ITT_OS_MAC
+# define ITT_PLATFORM ITT_PLATFORM_MAC
+# elif ITT_OS==ITT_OS_FREEBSD
+# define ITT_PLATFORM ITT_PLATFORM_FREEBSD
+# else
+# define ITT_PLATFORM ITT_PLATFORM_POSIX
+# endif
+#endif /* ITT_PLATFORM */
+
+#if defined(_UNICODE) && !defined(UNICODE)
+#define UNICODE
+#endif
+
+#include <stddef.h>
+#if ITT_PLATFORM==ITT_PLATFORM_WIN
+#include <tchar.h>
+#else /* ITT_PLATFORM==ITT_PLATFORM_WIN */
+#include <stdint.h>
+#if defined(UNICODE) || defined(_UNICODE)
+#include <wchar.h>
+#endif /* UNICODE || _UNICODE */
+#endif /* ITT_PLATFORM==ITT_PLATFORM_WIN */
+
+#ifndef ITTAPI_CDECL
+# if ITT_PLATFORM==ITT_PLATFORM_WIN
+# define ITTAPI_CDECL __cdecl
+# else /* ITT_PLATFORM==ITT_PLATFORM_WIN */
+# if defined _M_IX86 || defined __i386__
+# define ITTAPI_CDECL __attribute__ ((cdecl))
+# else /* _M_IX86 || __i386__ */
+# define ITTAPI_CDECL /* actual only on x86 platform */
+# endif /* _M_IX86 || __i386__ */
+# endif /* ITT_PLATFORM==ITT_PLATFORM_WIN */
+#endif /* ITTAPI_CDECL */
+
+#ifndef STDCALL
+# if ITT_PLATFORM==ITT_PLATFORM_WIN
+# define STDCALL __stdcall
+# else /* ITT_PLATFORM==ITT_PLATFORM_WIN */
+# if defined _M_IX86 || defined __i386__
+# define STDCALL __attribute__ ((stdcall))
+# else /* _M_IX86 || __i386__ */
+# define STDCALL /* supported only on x86 platform */
+# endif /* _M_IX86 || __i386__ */
+# endif /* ITT_PLATFORM==ITT_PLATFORM_WIN */
+#endif /* STDCALL */
+
+#define ITTAPI ITTAPI_CDECL
+#define LIBITTAPI ITTAPI_CDECL
+
+/* TODO: Temporary for compatibility! */
+#define ITTAPI_CALL ITTAPI_CDECL
+#define LIBITTAPI_CALL ITTAPI_CDECL
+
+#if ITT_PLATFORM==ITT_PLATFORM_WIN
+/* use __forceinline (VC++ specific) */
+#define ITT_INLINE __forceinline
+#define ITT_INLINE_ATTRIBUTE /* nothing */
+#else /* ITT_PLATFORM==ITT_PLATFORM_WIN */
+/*
+ * Generally, functions are not inlined unless optimization is specified.
+ * For functions declared inline, this attribute inlines the function even
+ * if no optimization level was specified.
+ */
+#ifdef __STRICT_ANSI__
+#define ITT_INLINE static
+#define ITT_INLINE_ATTRIBUTE __attribute__((unused))
+#else /* __STRICT_ANSI__ */
+#define ITT_INLINE static inline
+#define ITT_INLINE_ATTRIBUTE __attribute__((always_inline, unused))
+#endif /* __STRICT_ANSI__ */
+#endif /* ITT_PLATFORM==ITT_PLATFORM_WIN */
+/** @endcond */
+
+#ifdef INTEL_ITTNOTIFY_ENABLE_LEGACY
+# if ITT_PLATFORM==ITT_PLATFORM_WIN
+# pragma message("WARNING!!! Deprecated API is used. Please undefine INTEL_ITTNOTIFY_ENABLE_LEGACY macro")
+# else /* ITT_PLATFORM==ITT_PLATFORM_WIN */
+# warning "Deprecated API is used. Please undefine INTEL_ITTNOTIFY_ENABLE_LEGACY macro"
+# endif /* ITT_PLATFORM==ITT_PLATFORM_WIN */
+# include "vtune/legacy/ittnotify.h"
+#endif /* INTEL_ITTNOTIFY_ENABLE_LEGACY */
+
+/** @cond exclude_from_documentation */
+/* Helper macro for joining tokens */
+#define ITT_JOIN_AUX(p,n) p##n
+#define ITT_JOIN(p,n) ITT_JOIN_AUX(p,n)
+
+#ifdef ITT_MAJOR
+#undef ITT_MAJOR
+#endif
+#ifdef ITT_MINOR
+#undef ITT_MINOR
+#endif
+#define ITT_MAJOR 3
+#define ITT_MINOR 0
+
+/* Standard versioning of a token with major and minor version numbers */
+#define ITT_VERSIONIZE(x) \
+ ITT_JOIN(x, \
+ ITT_JOIN(_, \
+ ITT_JOIN(ITT_MAJOR, \
+ ITT_JOIN(_, ITT_MINOR))))
+
+#ifndef INTEL_ITTNOTIFY_PREFIX
+# define INTEL_ITTNOTIFY_PREFIX __itt_
+#endif /* INTEL_ITTNOTIFY_PREFIX */
+#ifndef INTEL_ITTNOTIFY_POSTFIX
+# define INTEL_ITTNOTIFY_POSTFIX _ptr_
+#endif /* INTEL_ITTNOTIFY_POSTFIX */
+
+#define ITTNOTIFY_NAME_AUX(n) ITT_JOIN(INTEL_ITTNOTIFY_PREFIX,n)
+#define ITTNOTIFY_NAME(n) ITT_VERSIONIZE(ITTNOTIFY_NAME_AUX(ITT_JOIN(n,INTEL_ITTNOTIFY_POSTFIX)))
+
+#define ITTNOTIFY_VOID(n) (!ITTNOTIFY_NAME(n)) ? (void)0 : ITTNOTIFY_NAME(n)
+#define ITTNOTIFY_DATA(n) (!ITTNOTIFY_NAME(n)) ? 0 : ITTNOTIFY_NAME(n)
+
+#define ITTNOTIFY_VOID_D0(n,d) (!(d)->flags) ? (void)0 : (!ITTNOTIFY_NAME(n)) ? (void)0 : ITTNOTIFY_NAME(n)(d)
+#define ITTNOTIFY_VOID_D1(n,d,x) (!(d)->flags) ? (void)0 : (!ITTNOTIFY_NAME(n)) ? (void)0 : ITTNOTIFY_NAME(n)(d,x)
+#define ITTNOTIFY_VOID_D2(n,d,x,y) (!(d)->flags) ? (void)0 : (!ITTNOTIFY_NAME(n)) ? (void)0 : ITTNOTIFY_NAME(n)(d,x,y)
+#define ITTNOTIFY_VOID_D3(n,d,x,y,z) (!(d)->flags) ? (void)0 : (!ITTNOTIFY_NAME(n)) ? (void)0 : ITTNOTIFY_NAME(n)(d,x,y,z)
+#define ITTNOTIFY_VOID_D4(n,d,x,y,z,a) (!(d)->flags) ? (void)0 : (!ITTNOTIFY_NAME(n)) ? (void)0 : ITTNOTIFY_NAME(n)(d,x,y,z,a)
+#define ITTNOTIFY_VOID_D5(n,d,x,y,z,a,b) (!(d)->flags) ? (void)0 : (!ITTNOTIFY_NAME(n)) ? (void)0 : ITTNOTIFY_NAME(n)(d,x,y,z,a,b)
+#define ITTNOTIFY_VOID_D6(n,d,x,y,z,a,b,c) (!(d)->flags) ? (void)0 : (!ITTNOTIFY_NAME(n)) ? (void)0 : ITTNOTIFY_NAME(n)(d,x,y,z,a,b,c)
+#define ITTNOTIFY_DATA_D0(n,d) (!(d)->flags) ? 0 : (!ITTNOTIFY_NAME(n)) ? 0 : ITTNOTIFY_NAME(n)(d)
+#define ITTNOTIFY_DATA_D1(n,d,x) (!(d)->flags) ? 0 : (!ITTNOTIFY_NAME(n)) ? 0 : ITTNOTIFY_NAME(n)(d,x)
+#define ITTNOTIFY_DATA_D2(n,d,x,y) (!(d)->flags) ? 0 : (!ITTNOTIFY_NAME(n)) ? 0 : ITTNOTIFY_NAME(n)(d,x,y)
+#define ITTNOTIFY_DATA_D3(n,d,x,y,z) (!(d)->flags) ? 0 : (!ITTNOTIFY_NAME(n)) ? 0 : ITTNOTIFY_NAME(n)(d,x,y,z)
+#define ITTNOTIFY_DATA_D4(n,d,x,y,z,a) (!(d)->flags) ? 0 : (!ITTNOTIFY_NAME(n)) ? 0 : ITTNOTIFY_NAME(n)(d,x,y,z,a)
+#define ITTNOTIFY_DATA_D5(n,d,x,y,z,a,b) (!(d)->flags) ? 0 : (!ITTNOTIFY_NAME(n)) ? 0 : ITTNOTIFY_NAME(n)(d,x,y,z,a,b)
+#define ITTNOTIFY_DATA_D6(n,d,x,y,z,a,b,c) (!(d)->flags) ? 0 : (!ITTNOTIFY_NAME(n)) ? 0 : ITTNOTIFY_NAME(n)(d,x,y,z,a,b,c)
+
+#ifdef ITT_STUB
+#undef ITT_STUB
+#endif
+#ifdef ITT_STUBV
+#undef ITT_STUBV
+#endif
+#define ITT_STUBV(api,type,name,args) \
+ typedef type (api* ITT_JOIN(ITTNOTIFY_NAME(name),_t)) args; \
+ extern ITT_JOIN(ITTNOTIFY_NAME(name),_t) ITTNOTIFY_NAME(name);
+#define ITT_STUB ITT_STUBV
+/** @endcond */
+
+#ifdef __cplusplus
+extern "C" {
+#endif /* __cplusplus */
+
+/** @cond exclude_from_gpa_documentation */
+/**
+ * @defgroup public Public API
+ * @{
+ * @}
+ */
+
+/**
+ * @defgroup control Collection Control
+ * @ingroup public
+ * General behavior: application continues to run, but no profiling information is being collected
+ *
+ * Pausing occurs not only for the current thread but for all process as well as spawned processes
+ * - Intel(R) Parallel Inspector and Intel(R) Inspector XE:
+ * - Does not analyze or report errors that involve memory access.
+ * - Other errors are reported as usual. Pausing data collection in
+ * Intel(R) Parallel Inspector and Intel(R) Inspector XE
+ * only pauses tracing and analyzing memory access.
+ * It does not pause tracing or analyzing threading APIs.
+ * .
+ * - Intel(R) Parallel Amplifier and Intel(R) VTune(TM) Amplifier XE:
+ * - Does continue to record when new threads are started.
+ * .
+ * - Other effects:
+ * - Possible reduction of runtime overhead.
+ * .
+ * @{
+ */
+/** @brief Pause collection */
+void ITTAPI __itt_pause(void);
+/** @brief Resume collection */
+void ITTAPI __itt_resume(void);
+/** @brief Detach collection */
+void ITTAPI __itt_detach(void);
+
+/** @cond exclude_from_documentation */
+#ifndef INTEL_NO_MACRO_BODY
+#ifndef INTEL_NO_ITTNOTIFY_API
+ITT_STUBV(ITTAPI, void, pause, (void))
+ITT_STUBV(ITTAPI, void, resume, (void))
+ITT_STUBV(ITTAPI, void, detach, (void))
+#define __itt_pause ITTNOTIFY_VOID(pause)
+#define __itt_pause_ptr ITTNOTIFY_NAME(pause)
+#define __itt_resume ITTNOTIFY_VOID(resume)
+#define __itt_resume_ptr ITTNOTIFY_NAME(resume)
+#define __itt_detach ITTNOTIFY_VOID(detach)
+#define __itt_detach_ptr ITTNOTIFY_NAME(detach)
+#else /* INTEL_NO_ITTNOTIFY_API */
+#define __itt_pause()
+#define __itt_pause_ptr 0
+#define __itt_resume()
+#define __itt_resume_ptr 0
+#define __itt_detach()
+#define __itt_detach_ptr 0
+#endif /* INTEL_NO_ITTNOTIFY_API */
+#else /* INTEL_NO_MACRO_BODY */
+#define __itt_pause_ptr 0
+#define __itt_resume_ptr 0
+#define __itt_detach_ptr 0
+#endif /* INTEL_NO_MACRO_BODY */
+/** @endcond */
+/** @} control group */
+/** @endcond */
+
+/**
+ * @defgroup threads Threads
+ * @ingroup public
+ * Give names to threads
+ * @{
+ */
+/**
+ * @brief Sets thread name of calling thread
+ * @param[in] name - name of thread
+ */
+#if ITT_PLATFORM==ITT_PLATFORM_WIN
+void ITTAPI __itt_thread_set_nameA(const char *name);
+void ITTAPI __itt_thread_set_nameW(const wchar_t *name);
+#if defined(UNICODE) || defined(_UNICODE)
+# define __itt_thread_set_name __itt_thread_set_nameW
+# define __itt_thread_set_name_ptr __itt_thread_set_nameW_ptr
+#else /* UNICODE */
+# define __itt_thread_set_name __itt_thread_set_nameA
+# define __itt_thread_set_name_ptr __itt_thread_set_nameA_ptr
+#endif /* UNICODE */
+#else /* ITT_PLATFORM==ITT_PLATFORM_WIN */
+void ITTAPI __itt_thread_set_name(const char *name);
+#endif /* ITT_PLATFORM==ITT_PLATFORM_WIN */
+
+/** @cond exclude_from_documentation */
+#ifndef INTEL_NO_MACRO_BODY
+#ifndef INTEL_NO_ITTNOTIFY_API
+#if ITT_PLATFORM==ITT_PLATFORM_WIN
+ITT_STUBV(ITTAPI, void, thread_set_nameA, (const char *name))
+ITT_STUBV(ITTAPI, void, thread_set_nameW, (const wchar_t *name))
+#else /* ITT_PLATFORM==ITT_PLATFORM_WIN */
+ITT_STUBV(ITTAPI, void, thread_set_name, (const char *name))
+#endif /* ITT_PLATFORM==ITT_PLATFORM_WIN */
+#if ITT_PLATFORM==ITT_PLATFORM_WIN
+#define __itt_thread_set_nameA ITTNOTIFY_VOID(thread_set_nameA)
+#define __itt_thread_set_nameA_ptr ITTNOTIFY_NAME(thread_set_nameA)
+#define __itt_thread_set_nameW ITTNOTIFY_VOID(thread_set_nameW)
+#define __itt_thread_set_nameW_ptr ITTNOTIFY_NAME(thread_set_nameW)
+#else /* ITT_PLATFORM==ITT_PLATFORM_WIN */
+#define __itt_thread_set_name ITTNOTIFY_VOID(thread_set_name)
+#define __itt_thread_set_name_ptr ITTNOTIFY_NAME(thread_set_name)
+#endif /* ITT_PLATFORM==ITT_PLATFORM_WIN */
+#else /* INTEL_NO_ITTNOTIFY_API */
+#if ITT_PLATFORM==ITT_PLATFORM_WIN
+#define __itt_thread_set_nameA(name)
+#define __itt_thread_set_nameA_ptr 0
+#define __itt_thread_set_nameW(name)
+#define __itt_thread_set_nameW_ptr 0
+#else /* ITT_PLATFORM==ITT_PLATFORM_WIN */
+#define __itt_thread_set_name(name)
+#define __itt_thread_set_name_ptr 0
+#endif /* ITT_PLATFORM==ITT_PLATFORM_WIN */
+#endif /* INTEL_NO_ITTNOTIFY_API */
+#else /* INTEL_NO_MACRO_BODY */
+#if ITT_PLATFORM==ITT_PLATFORM_WIN
+#define __itt_thread_set_nameA_ptr 0
+#define __itt_thread_set_nameW_ptr 0
+#else /* ITT_PLATFORM==ITT_PLATFORM_WIN */
+#define __itt_thread_set_name_ptr 0
+#endif /* ITT_PLATFORM==ITT_PLATFORM_WIN */
+#endif /* INTEL_NO_MACRO_BODY */
+/** @endcond */
+
+/** @cond exclude_from_gpa_documentation */
+
+/**
+ * @brief Mark current thread as ignored from this point on, for the duration of its existence.
+ */
+void ITTAPI __itt_thread_ignore(void);
+
+/** @cond exclude_from_documentation */
+#ifndef INTEL_NO_MACRO_BODY
+#ifndef INTEL_NO_ITTNOTIFY_API
+ITT_STUBV(ITTAPI, void, thread_ignore, (void))
+#define __itt_thread_ignore ITTNOTIFY_VOID(thread_ignore)
+#define __itt_thread_ignore_ptr ITTNOTIFY_NAME(thread_ignore)
+#else /* INTEL_NO_ITTNOTIFY_API */
+#define __itt_thread_ignore()
+#define __itt_thread_ignore_ptr 0
+#endif /* INTEL_NO_ITTNOTIFY_API */
+#else /* INTEL_NO_MACRO_BODY */
+#define __itt_thread_ignore_ptr 0
+#endif /* INTEL_NO_MACRO_BODY */
+/** @endcond */
+/** @} threads group */
+
+/**
+ * @defgroup suppress Error suppression
+ * @ingroup public
+ * General behavior: application continues to run, but errors are suppressed
+ *
+ * @{
+ */
+
+/*****************************************************************//**
+ * @name group of functions used for error suppression in correctness tools
+ *********************************************************************/
+/** @{ */
+/**
+ * @hideinitializer
+ * @brief possible value for suppression mask
+ */
+#define __itt_suppress_all_errors 0x7fffffff
+
+/**
+ * @hideinitializer
+ * @brief possible value for suppression mask (suppresses errors from threading analysis)
+ */
+#define __itt_suppress_threading_errors 0x000000ff
+
+/**
+ * @hideinitializer
+ * @brief possible value for suppression mask (suppresses errors from memory analysis)
+ */
+#define __itt_suppress_memory_errors 0x0000ff00
+
+/**
+ * @brief Start suppressing errors identified in mask on this thread
+ */
+void ITTAPI __itt_suppress_push(unsigned int mask);
+
+/** @cond exclude_from_documentation */
+#ifndef INTEL_NO_MACRO_BODY
+#ifndef INTEL_NO_ITTNOTIFY_API
+ITT_STUBV(ITTAPI, void, suppress_push, (unsigned int mask))
+#define __itt_suppress_push ITTNOTIFY_VOID(suppress_push)
+#define __itt_suppress_push_ptr ITTNOTIFY_NAME(suppress_push)
+#else /* INTEL_NO_ITTNOTIFY_API */
+#define __itt_suppress_push(mask)
+#define __itt_suppress_push_ptr 0
+#endif /* INTEL_NO_ITTNOTIFY_API */
+#else /* INTEL_NO_MACRO_BODY */
+#define __itt_suppress_push_ptr 0
+#endif /* INTEL_NO_MACRO_BODY */
+/** @endcond */
+
+/**
+ * @brief Undo the effects of the matching call to __itt_suppress_push
+ */
+void ITTAPI __itt_suppress_pop(void);
+
+/** @cond exclude_from_documentation */
+#ifndef INTEL_NO_MACRO_BODY
+#ifndef INTEL_NO_ITTNOTIFY_API
+ITT_STUBV(ITTAPI, void, suppress_pop, (void))
+#define __itt_suppress_pop ITTNOTIFY_VOID(suppress_pop)
+#define __itt_suppress_pop_ptr ITTNOTIFY_NAME(suppress_pop)
+#else /* INTEL_NO_ITTNOTIFY_API */
+#define __itt_suppress_pop()
+#define __itt_suppress_pop_ptr 0
+#endif /* INTEL_NO_ITTNOTIFY_API */
+#else /* INTEL_NO_MACRO_BODY */
+#define __itt_suppress_pop_ptr 0
+#endif /* INTEL_NO_MACRO_BODY */
+/** @endcond */
+
+/**
+ * @enum __itt_model_disable
+ * @brief Enumerator for the disable methods
+ */
+typedef enum __itt_suppress_mode {
+ __itt_unsuppress_range,
+ __itt_suppress_range
+} __itt_suppress_mode_t;
+
+/**
+ * @brief Mark a range of memory for error suppression or unsuppression for error types included in mask
+ */
+void ITTAPI __itt_suppress_mark_range(__itt_suppress_mode_t mode, unsigned int mask, void * address, size_t size);
+
+/** @cond exclude_from_documentation */
+#ifndef INTEL_NO_MACRO_BODY
+#ifndef INTEL_NO_ITTNOTIFY_API
+ITT_STUBV(ITTAPI, void, suppress_mark_range, (__itt_suppress_mode_t mode, unsigned int mask, void * address, size_t size))
+#define __itt_suppress_mark_range ITTNOTIFY_VOID(suppress_mark_range)
+#define __itt_suppress_mark_range_ptr ITTNOTIFY_NAME(suppress_mark_range)
+#else /* INTEL_NO_ITTNOTIFY_API */
+#define __itt_suppress_mark_range(mask)
+#define __itt_suppress_mark_range_ptr 0
+#endif /* INTEL_NO_ITTNOTIFY_API */
+#else /* INTEL_NO_MACRO_BODY */
+#define __itt_suppress_mark_range_ptr 0
+#endif /* INTEL_NO_MACRO_BODY */
+/** @endcond */
+
+/**
+ * @brief Undo the effect of a matching call to __itt_suppress_mark_range. If not matching
+ * call is found, nothing is changed.
+ */
+void ITTAPI __itt_suppress_clear_range(__itt_suppress_mode_t mode, unsigned int mask, void * address, size_t size);
+
+/** @cond exclude_from_documentation */
+#ifndef INTEL_NO_MACRO_BODY
+#ifndef INTEL_NO_ITTNOTIFY_API
+ITT_STUBV(ITTAPI, void, suppress_clear_range, (__itt_suppress_mode_t mode, unsigned int mask, void * address, size_t size))
+#define __itt_suppress_clear_range ITTNOTIFY_VOID(suppress_clear_range)
+#define __itt_suppress_clear_range_ptr ITTNOTIFY_NAME(suppress_clear_range)
+#else /* INTEL_NO_ITTNOTIFY_API */
+#define __itt_suppress_clear_range(mask)
+#define __itt_suppress_clear_range_ptr 0
+#endif /* INTEL_NO_ITTNOTIFY_API */
+#else /* INTEL_NO_MACRO_BODY */
+#define __itt_suppress_clear_range_ptr 0
+#endif /* INTEL_NO_MACRO_BODY */
+/** @endcond */
+/** @} */
+/** @} suppress group */
+
+/**
+ * @defgroup sync Synchronization
+ * @ingroup public
+ * Indicate user-written synchronization code
+ * @{
+ */
+/**
+ * @hideinitializer
+ * @brief possible value of attribute argument for sync object type
+ */
+#define __itt_attr_barrier 1
+
+/**
+ * @hideinitializer
+ * @brief possible value of attribute argument for sync object type
+ */
+#define __itt_attr_mutex 2
+
+/**
+@brief Name a synchronization object
+@param[in] addr Handle for the synchronization object. You should
+use a real address to uniquely identify the synchronization object.
+@param[in] objtype null-terminated object type string. If NULL is
+passed, the name will be "User Synchronization".
+@param[in] objname null-terminated object name string. If NULL,
+no name will be assigned to the object.
+@param[in] attribute one of [#__itt_attr_barrier, #__itt_attr_mutex]
+ */
+
+#if ITT_PLATFORM==ITT_PLATFORM_WIN
+void ITTAPI __itt_sync_createA(void *addr, const char *objtype, const char *objname, int attribute);
+void ITTAPI __itt_sync_createW(void *addr, const wchar_t *objtype, const wchar_t *objname, int attribute);
+#if defined(UNICODE) || defined(_UNICODE)
+# define __itt_sync_create __itt_sync_createW
+# define __itt_sync_create_ptr __itt_sync_createW_ptr
+#else /* UNICODE */
+# define __itt_sync_create __itt_sync_createA
+# define __itt_sync_create_ptr __itt_sync_createA_ptr
+#endif /* UNICODE */
+#else /* ITT_PLATFORM==ITT_PLATFORM_WIN */
+void ITTAPI __itt_sync_create (void *addr, const char *objtype, const char *objname, int attribute);
+#endif /* ITT_PLATFORM==ITT_PLATFORM_WIN */
+
+/** @cond exclude_from_documentation */
+#ifndef INTEL_NO_MACRO_BODY
+#ifndef INTEL_NO_ITTNOTIFY_API
+#if ITT_PLATFORM==ITT_PLATFORM_WIN
+ITT_STUBV(ITTAPI, void, sync_createA, (void *addr, const char *objtype, const char *objname, int attribute))
+ITT_STUBV(ITTAPI, void, sync_createW, (void *addr, const wchar_t *objtype, const wchar_t *objname, int attribute))
+#else /* ITT_PLATFORM==ITT_PLATFORM_WIN */
+ITT_STUBV(ITTAPI, void, sync_create, (void *addr, const char* objtype, const char* objname, int attribute))
+#endif /* ITT_PLATFORM==ITT_PLATFORM_WIN */
+#if ITT_PLATFORM==ITT_PLATFORM_WIN
+#define __itt_sync_createA ITTNOTIFY_VOID(sync_createA)
+#define __itt_sync_createA_ptr ITTNOTIFY_NAME(sync_createA)
+#define __itt_sync_createW ITTNOTIFY_VOID(sync_createW)
+#define __itt_sync_createW_ptr ITTNOTIFY_NAME(sync_createW)
+#else /* ITT_PLATFORM==ITT_PLATFORM_WIN */
+#define __itt_sync_create ITTNOTIFY_VOID(sync_create)
+#define __itt_sync_create_ptr ITTNOTIFY_NAME(sync_create)
+#endif /* ITT_PLATFORM==ITT_PLATFORM_WIN */
+#else /* INTEL_NO_ITTNOTIFY_API */
+#if ITT_PLATFORM==ITT_PLATFORM_WIN
+#define __itt_sync_createA(addr, objtype, objname, attribute)
+#define __itt_sync_createA_ptr 0
+#define __itt_sync_createW(addr, objtype, objname, attribute)
+#define __itt_sync_createW_ptr 0
+#else /* ITT_PLATFORM==ITT_PLATFORM_WIN */
+#define __itt_sync_create(addr, objtype, objname, attribute)
+#define __itt_sync_create_ptr 0
+#endif /* ITT_PLATFORM==ITT_PLATFORM_WIN */
+#endif /* INTEL_NO_ITTNOTIFY_API */
+#else /* INTEL_NO_MACRO_BODY */
+#if ITT_PLATFORM==ITT_PLATFORM_WIN
+#define __itt_sync_createA_ptr 0
+#define __itt_sync_createW_ptr 0
+#else /* ITT_PLATFORM==ITT_PLATFORM_WIN */
+#define __itt_sync_create_ptr 0
+#endif /* ITT_PLATFORM==ITT_PLATFORM_WIN */
+#endif /* INTEL_NO_MACRO_BODY */
+/** @endcond */
+
+/**
+@brief Rename a synchronization object
+
+You can use the rename call to assign or reassign a name to a given
+synchronization object.
+@param[in] addr handle for the synchronization object.
+@param[in] name null-terminated object name string.
+*/
+#if ITT_PLATFORM==ITT_PLATFORM_WIN
+void ITTAPI __itt_sync_renameA(void *addr, const char *name);
+void ITTAPI __itt_sync_renameW(void *addr, const wchar_t *name);
+#if defined(UNICODE) || defined(_UNICODE)
+# define __itt_sync_rename __itt_sync_renameW
+# define __itt_sync_rename_ptr __itt_sync_renameW_ptr
+#else /* UNICODE */
+# define __itt_sync_rename __itt_sync_renameA
+# define __itt_sync_rename_ptr __itt_sync_renameA_ptr
+#endif /* UNICODE */
+#else /* ITT_PLATFORM==ITT_PLATFORM_WIN */
+void ITTAPI __itt_sync_rename(void *addr, const char *name);
+#endif /* ITT_PLATFORM==ITT_PLATFORM_WIN */
+
+/** @cond exclude_from_documentation */
+#ifndef INTEL_NO_MACRO_BODY
+#ifndef INTEL_NO_ITTNOTIFY_API
+#if ITT_PLATFORM==ITT_PLATFORM_WIN
+ITT_STUBV(ITTAPI, void, sync_renameA, (void *addr, const char *name))
+ITT_STUBV(ITTAPI, void, sync_renameW, (void *addr, const wchar_t *name))
+#else /* ITT_PLATFORM==ITT_PLATFORM_WIN */
+ITT_STUBV(ITTAPI, void, sync_rename, (void *addr, const char *name))
+#endif /* ITT_PLATFORM==ITT_PLATFORM_WIN */
+#if ITT_PLATFORM==ITT_PLATFORM_WIN
+#define __itt_sync_renameA ITTNOTIFY_VOID(sync_renameA)
+#define __itt_sync_renameA_ptr ITTNOTIFY_NAME(sync_renameA)
+#define __itt_sync_renameW ITTNOTIFY_VOID(sync_renameW)
+#define __itt_sync_renameW_ptr ITTNOTIFY_NAME(sync_renameW)
+#else /* ITT_PLATFORM==ITT_PLATFORM_WIN */
+#define __itt_sync_rename ITTNOTIFY_VOID(sync_rename)
+#define __itt_sync_rename_ptr ITTNOTIFY_NAME(sync_rename)
+#endif /* ITT_PLATFORM==ITT_PLATFORM_WIN */
+#else /* INTEL_NO_ITTNOTIFY_API */
+#if ITT_PLATFORM==ITT_PLATFORM_WIN
+#define __itt_sync_renameA(addr, name)
+#define __itt_sync_renameA_ptr 0
+#define __itt_sync_renameW(addr, name)
+#define __itt_sync_renameW_ptr 0
+#else /* ITT_PLATFORM==ITT_PLATFORM_WIN */
+#define __itt_sync_rename(addr, name)
+#define __itt_sync_rename_ptr 0
+#endif /* ITT_PLATFORM==ITT_PLATFORM_WIN */
+#endif /* INTEL_NO_ITTNOTIFY_API */
+#else /* INTEL_NO_MACRO_BODY */
+#if ITT_PLATFORM==ITT_PLATFORM_WIN
+#define __itt_sync_renameA_ptr 0
+#define __itt_sync_renameW_ptr 0
+#else /* ITT_PLATFORM==ITT_PLATFORM_WIN */
+#define __itt_sync_rename_ptr 0
+#endif /* ITT_PLATFORM==ITT_PLATFORM_WIN */
+#endif /* INTEL_NO_MACRO_BODY */
+/** @endcond */
+
+/**
+ @brief Destroy a synchronization object.
+ @param addr Handle for the synchronization object.
+ */
+void ITTAPI __itt_sync_destroy(void *addr);
+
+/** @cond exclude_from_documentation */
+#ifndef INTEL_NO_MACRO_BODY
+#ifndef INTEL_NO_ITTNOTIFY_API
+ITT_STUBV(ITTAPI, void, sync_destroy, (void *addr))
+#define __itt_sync_destroy ITTNOTIFY_VOID(sync_destroy)
+#define __itt_sync_destroy_ptr ITTNOTIFY_NAME(sync_destroy)
+#else /* INTEL_NO_ITTNOTIFY_API */
+#define __itt_sync_destroy(addr)
+#define __itt_sync_destroy_ptr 0
+#endif /* INTEL_NO_ITTNOTIFY_API */
+#else /* INTEL_NO_MACRO_BODY */
+#define __itt_sync_destroy_ptr 0
+#endif /* INTEL_NO_MACRO_BODY */
+/** @endcond */
+
+/*****************************************************************//**
+ * @name group of functions is used for performance measurement tools
+ *********************************************************************/
+/** @{ */
+/**
+ * @brief Enter spin loop on user-defined sync object
+ */
+void ITTAPI __itt_sync_prepare(void* addr);
+
+/** @cond exclude_from_documentation */
+#ifndef INTEL_NO_MACRO_BODY
+#ifndef INTEL_NO_ITTNOTIFY_API
+ITT_STUBV(ITTAPI, void, sync_prepare, (void *addr))
+#define __itt_sync_prepare ITTNOTIFY_VOID(sync_prepare)
+#define __itt_sync_prepare_ptr ITTNOTIFY_NAME(sync_prepare)
+#else /* INTEL_NO_ITTNOTIFY_API */
+#define __itt_sync_prepare(addr)
+#define __itt_sync_prepare_ptr 0
+#endif /* INTEL_NO_ITTNOTIFY_API */
+#else /* INTEL_NO_MACRO_BODY */
+#define __itt_sync_prepare_ptr 0
+#endif /* INTEL_NO_MACRO_BODY */
+/** @endcond */
+
+/**
+ * @brief Quit spin loop without acquiring spin object
+ */
+void ITTAPI __itt_sync_cancel(void *addr);
+
+/** @cond exclude_from_documentation */
+#ifndef INTEL_NO_MACRO_BODY
+#ifndef INTEL_NO_ITTNOTIFY_API
+ITT_STUBV(ITTAPI, void, sync_cancel, (void *addr))
+#define __itt_sync_cancel ITTNOTIFY_VOID(sync_cancel)
+#define __itt_sync_cancel_ptr ITTNOTIFY_NAME(sync_cancel)
+#else /* INTEL_NO_ITTNOTIFY_API */
+#define __itt_sync_cancel(addr)
+#define __itt_sync_cancel_ptr 0
+#endif /* INTEL_NO_ITTNOTIFY_API */
+#else /* INTEL_NO_MACRO_BODY */
+#define __itt_sync_cancel_ptr 0
+#endif /* INTEL_NO_MACRO_BODY */
+/** @endcond */
+
+/**
+ * @brief Successful spin loop completion (sync object acquired)
+ */
+void ITTAPI __itt_sync_acquired(void *addr);
+
+/** @cond exclude_from_documentation */
+#ifndef INTEL_NO_MACRO_BODY
+#ifndef INTEL_NO_ITTNOTIFY_API
+ITT_STUBV(ITTAPI, void, sync_acquired, (void *addr))
+#define __itt_sync_acquired ITTNOTIFY_VOID(sync_acquired)
+#define __itt_sync_acquired_ptr ITTNOTIFY_NAME(sync_acquired)
+#else /* INTEL_NO_ITTNOTIFY_API */
+#define __itt_sync_acquired(addr)
+#define __itt_sync_acquired_ptr 0
+#endif /* INTEL_NO_ITTNOTIFY_API */
+#else /* INTEL_NO_MACRO_BODY */
+#define __itt_sync_acquired_ptr 0
+#endif /* INTEL_NO_MACRO_BODY */
+/** @endcond */
+
+/**
+ * @brief Start sync object releasing code. Is called before the lock release call.
+ */
+void ITTAPI __itt_sync_releasing(void* addr);
+
+/** @cond exclude_from_documentation */
+#ifndef INTEL_NO_MACRO_BODY
+#ifndef INTEL_NO_ITTNOTIFY_API
+ITT_STUBV(ITTAPI, void, sync_releasing, (void *addr))
+#define __itt_sync_releasing ITTNOTIFY_VOID(sync_releasing)
+#define __itt_sync_releasing_ptr ITTNOTIFY_NAME(sync_releasing)
+#else /* INTEL_NO_ITTNOTIFY_API */
+#define __itt_sync_releasing(addr)
+#define __itt_sync_releasing_ptr 0
+#endif /* INTEL_NO_ITTNOTIFY_API */
+#else /* INTEL_NO_MACRO_BODY */
+#define __itt_sync_releasing_ptr 0
+#endif /* INTEL_NO_MACRO_BODY */
+/** @endcond */
+/** @} */
+
+/** @} sync group */
+
+/**************************************************************//**
+ * @name group of functions is used for correctness checking tools
+ ******************************************************************/
+/** @{ */
+/**
+ * @ingroup legacy
+ * @deprecated Legacy API
+ * @brief Fast synchronization which does no require spinning.
+ * - This special function is to be used by TBB and OpenMP libraries only when they know
+ * there is no spin but they need to suppress TC warnings about shared variable modifications.
+ * - It only has corresponding pointers in static library and does not have corresponding function
+ * in dynamic library.
+ * @see void __itt_sync_prepare(void* addr);
+ */
+void ITTAPI __itt_fsync_prepare(void* addr);
+
+/** @cond exclude_from_documentation */
+#ifndef INTEL_NO_MACRO_BODY
+#ifndef INTEL_NO_ITTNOTIFY_API
+ITT_STUBV(ITTAPI, void, fsync_prepare, (void *addr))
+#define __itt_fsync_prepare ITTNOTIFY_VOID(fsync_prepare)
+#define __itt_fsync_prepare_ptr ITTNOTIFY_NAME(fsync_prepare)
+#else /* INTEL_NO_ITTNOTIFY_API */
+#define __itt_fsync_prepare(addr)
+#define __itt_fsync_prepare_ptr 0
+#endif /* INTEL_NO_ITTNOTIFY_API */
+#else /* INTEL_NO_MACRO_BODY */
+#define __itt_fsync_prepare_ptr 0
+#endif /* INTEL_NO_MACRO_BODY */
+/** @endcond */
+
+/**
+ * @ingroup legacy
+ * @deprecated Legacy API
+ * @brief Fast synchronization which does no require spinning.
+ * - This special function is to be used by TBB and OpenMP libraries only when they know
+ * there is no spin but they need to suppress TC warnings about shared variable modifications.
+ * - It only has corresponding pointers in static library and does not have corresponding function
+ * in dynamic library.
+ * @see void __itt_sync_cancel(void *addr);
+ */
+void ITTAPI __itt_fsync_cancel(void *addr);
+
+/** @cond exclude_from_documentation */
+#ifndef INTEL_NO_MACRO_BODY
+#ifndef INTEL_NO_ITTNOTIFY_API
+ITT_STUBV(ITTAPI, void, fsync_cancel, (void *addr))
+#define __itt_fsync_cancel ITTNOTIFY_VOID(fsync_cancel)
+#define __itt_fsync_cancel_ptr ITTNOTIFY_NAME(fsync_cancel)
+#else /* INTEL_NO_ITTNOTIFY_API */
+#define __itt_fsync_cancel(addr)
+#define __itt_fsync_cancel_ptr 0
+#endif /* INTEL_NO_ITTNOTIFY_API */
+#else /* INTEL_NO_MACRO_BODY */
+#define __itt_fsync_cancel_ptr 0
+#endif /* INTEL_NO_MACRO_BODY */
+/** @endcond */
+
+/**
+ * @ingroup legacy
+ * @deprecated Legacy API
+ * @brief Fast synchronization which does no require spinning.
+ * - This special function is to be used by TBB and OpenMP libraries only when they know
+ * there is no spin but they need to suppress TC warnings about shared variable modifications.
+ * - It only has corresponding pointers in static library and does not have corresponding function
+ * in dynamic library.
+ * @see void __itt_sync_acquired(void *addr);
+ */
+void ITTAPI __itt_fsync_acquired(void *addr);
+
+/** @cond exclude_from_documentation */
+#ifndef INTEL_NO_MACRO_BODY
+#ifndef INTEL_NO_ITTNOTIFY_API
+ITT_STUBV(ITTAPI, void, fsync_acquired, (void *addr))
+#define __itt_fsync_acquired ITTNOTIFY_VOID(fsync_acquired)
+#define __itt_fsync_acquired_ptr ITTNOTIFY_NAME(fsync_acquired)
+#else /* INTEL_NO_ITTNOTIFY_API */
+#define __itt_fsync_acquired(addr)
+#define __itt_fsync_acquired_ptr 0
+#endif /* INTEL_NO_ITTNOTIFY_API */
+#else /* INTEL_NO_MACRO_BODY */
+#define __itt_fsync_acquired_ptr 0
+#endif /* INTEL_NO_MACRO_BODY */
+/** @endcond */
+
+/**
+ * @ingroup legacy
+ * @deprecated Legacy API
+ * @brief Fast synchronization which does no require spinning.
+ * - This special function is to be used by TBB and OpenMP libraries only when they know
+ * there is no spin but they need to suppress TC warnings about shared variable modifications.
+ * - It only has corresponding pointers in static library and does not have corresponding function
+ * in dynamic library.
+ * @see void __itt_sync_releasing(void* addr);
+ */
+void ITTAPI __itt_fsync_releasing(void* addr);
+
+/** @cond exclude_from_documentation */
+#ifndef INTEL_NO_MACRO_BODY
+#ifndef INTEL_NO_ITTNOTIFY_API
+ITT_STUBV(ITTAPI, void, fsync_releasing, (void *addr))
+#define __itt_fsync_releasing ITTNOTIFY_VOID(fsync_releasing)
+#define __itt_fsync_releasing_ptr ITTNOTIFY_NAME(fsync_releasing)
+#else /* INTEL_NO_ITTNOTIFY_API */
+#define __itt_fsync_releasing(addr)
+#define __itt_fsync_releasing_ptr 0
+#endif /* INTEL_NO_ITTNOTIFY_API */
+#else /* INTEL_NO_MACRO_BODY */
+#define __itt_fsync_releasing_ptr 0
+#endif /* INTEL_NO_MACRO_BODY */
+/** @endcond */
+/** @} */
+
+/**
+ * @defgroup model Modeling by Intel(R) Parallel Advisor
+ * @ingroup public
+ * This is the subset of itt used for modeling by Intel(R) Parallel Advisor.
+ * This API is called ONLY using annotate.h, by "Annotation" macros
+ * the user places in their sources during the parallelism modeling steps.
+ *
+ * site_begin/end and task_begin/end take the address of handle variables,
+ * which are writeable by the API. Handles must be 0 initialized prior
+ * to the first call to begin, or may cause a run-time failure.
+ * The handles are initialized in a multi-thread safe way by the API if
+ * the handle is 0. The commonly expected idiom is one static handle to
+ * identify a site or task. If a site or task of the same name has already
+ * been started during this collection, the same handle MAY be returned,
+ * but is not required to be - it is unspecified if data merging is done
+ * based on name. These routines also take an instance variable. Like
+ * the lexical instance, these must be 0 initialized. Unlike the lexical
+ * instance, this is used to track a single dynamic instance.
+ *
+ * API used by the Intel(R) Parallel Advisor to describe potential concurrency
+ * and related activities. User-added source annotations expand to calls
+ * to these procedures to enable modeling of a hypothetical concurrent
+ * execution serially.
+ * @{
+ */
+#if !defined(_ADVISOR_ANNOTATE_H_) || defined(ANNOTATE_EXPAND_NULL)
+
+typedef void* __itt_model_site; /*!< @brief handle for lexical site */
+typedef void* __itt_model_site_instance; /*!< @brief handle for dynamic instance */
+typedef void* __itt_model_task; /*!< @brief handle for lexical site */
+typedef void* __itt_model_task_instance; /*!< @brief handle for dynamic instance */
+
+/**
+ * @enum __itt_model_disable
+ * @brief Enumerator for the disable methods
+ */
+typedef enum {
+ __itt_model_disable_observation,
+ __itt_model_disable_collection
+} __itt_model_disable;
+
+#endif /* !_ADVISOR_ANNOTATE_H_ || ANNOTATE_EXPAND_NULL */
+
+/**
+ * @brief ANNOTATE_SITE_BEGIN/ANNOTATE_SITE_END support.
+ *
+ * site_begin/end model a potential concurrency site.
+ * site instances may be recursively nested with themselves.
+ * site_end exits the most recently started but unended site for the current
+ * thread. The handle passed to end may be used to validate structure.
+ * Instances of a site encountered on different threads concurrently
+ * are considered completely distinct. If the site name for two different
+ * lexical sites match, it is unspecified whether they are treated as the
+ * same or different for data presentation.
+ */
+void ITTAPI __itt_model_site_begin(__itt_model_site *site, __itt_model_site_instance *instance, const char *name);
+#if ITT_PLATFORM==ITT_PLATFORM_WIN
+void ITTAPI __itt_model_site_beginW(const wchar_t *name);
+#endif
+void ITTAPI __itt_model_site_beginA(const char *name);
+void ITTAPI __itt_model_site_beginAL(const char *name, size_t siteNameLen);
+void ITTAPI __itt_model_site_end (__itt_model_site *site, __itt_model_site_instance *instance);
+void ITTAPI __itt_model_site_end_2(void);
+
+/** @cond exclude_from_documentation */
+#ifndef INTEL_NO_MACRO_BODY
+#ifndef INTEL_NO_ITTNOTIFY_API
+ITT_STUBV(ITTAPI, void, model_site_begin, (__itt_model_site *site, __itt_model_site_instance *instance, const char *name))
+#if ITT_PLATFORM==ITT_PLATFORM_WIN
+ITT_STUBV(ITTAPI, void, model_site_beginW, (const wchar_t *name))
+#endif
+ITT_STUBV(ITTAPI, void, model_site_beginA, (const char *name))
+ITT_STUBV(ITTAPI, void, model_site_beginAL, (const char *name, size_t siteNameLen))
+ITT_STUBV(ITTAPI, void, model_site_end, (__itt_model_site *site, __itt_model_site_instance *instance))
+ITT_STUBV(ITTAPI, void, model_site_end_2, (void))
+#define __itt_model_site_begin ITTNOTIFY_VOID(model_site_begin)
+#define __itt_model_site_begin_ptr ITTNOTIFY_NAME(model_site_begin)
+#if ITT_PLATFORM==ITT_PLATFORM_WIN
+#define __itt_model_site_beginW ITTNOTIFY_VOID(model_site_beginW)
+#define __itt_model_site_beginW_ptr ITTNOTIFY_NAME(model_site_beginW)
+#endif
+#define __itt_model_site_beginA ITTNOTIFY_VOID(model_site_beginA)
+#define __itt_model_site_beginA_ptr ITTNOTIFY_NAME(model_site_beginA)
+#define __itt_model_site_beginAL ITTNOTIFY_VOID(model_site_beginAL)
+#define __itt_model_site_beginAL_ptr ITTNOTIFY_NAME(model_site_beginAL)
+#define __itt_model_site_end ITTNOTIFY_VOID(model_site_end)
+#define __itt_model_site_end_ptr ITTNOTIFY_NAME(model_site_end)
+#define __itt_model_site_end_2 ITTNOTIFY_VOID(model_site_end_2)
+#define __itt_model_site_end_2_ptr ITTNOTIFY_NAME(model_site_end_2)
+#else /* INTEL_NO_ITTNOTIFY_API */
+#define __itt_model_site_begin(site, instance, name)
+#define __itt_model_site_begin_ptr 0
+#if ITT_PLATFORM==ITT_PLATFORM_WIN
+#define __itt_model_site_beginW(name)
+#define __itt_model_site_beginW_ptr 0
+#endif
+#define __itt_model_site_beginA(name)
+#define __itt_model_site_beginA_ptr 0
+#define __itt_model_site_beginAL(name, siteNameLen)
+#define __itt_model_site_beginAL_ptr 0
+#define __itt_model_site_end(site, instance)
+#define __itt_model_site_end_ptr 0
+#define __itt_model_site_end_2()
+#define __itt_model_site_end_2_ptr 0
+#endif /* INTEL_NO_ITTNOTIFY_API */
+#else /* INTEL_NO_MACRO_BODY */
+#define __itt_model_site_begin_ptr 0
+#if ITT_PLATFORM==ITT_PLATFORM_WIN
+#define __itt_model_site_beginW_ptr 0
+#endif
+#define __itt_model_site_beginA_ptr 0
+#define __itt_model_site_beginAL_ptr 0
+#define __itt_model_site_end_ptr 0
+#define __itt_model_site_end_2_ptr 0
+#endif /* INTEL_NO_MACRO_BODY */
+/** @endcond */
+
+/**
+ * @brief ANNOTATE_TASK_BEGIN/ANNOTATE_TASK_END support
+ *
+ * task_begin/end model a potential task, which is contained within the most
+ * closely enclosing dynamic site. task_end exits the most recently started
+ * but unended task. The handle passed to end may be used to validate
+ * structure. It is unspecified if bad dynamic nesting is detected. If it
+ * is, it should be encoded in the resulting data collection. The collector
+ * should not fail due to construct nesting issues, nor attempt to directly
+ * indicate the problem.
+ */
+void ITTAPI __itt_model_task_begin(__itt_model_task *task, __itt_model_task_instance *instance, const char *name);
+#if ITT_PLATFORM==ITT_PLATFORM_WIN
+void ITTAPI __itt_model_task_beginW(const wchar_t *name);
+void ITTAPI __itt_model_iteration_taskW(const wchar_t *name);
+#endif
+void ITTAPI __itt_model_task_beginA(const char *name);
+void ITTAPI __itt_model_task_beginAL(const char *name, size_t taskNameLen);
+void ITTAPI __itt_model_iteration_taskA(const char *name);
+void ITTAPI __itt_model_iteration_taskAL(const char *name, size_t taskNameLen);
+void ITTAPI __itt_model_task_end (__itt_model_task *task, __itt_model_task_instance *instance);
+void ITTAPI __itt_model_task_end_2(void);
+
+/** @cond exclude_from_documentation */
+#ifndef INTEL_NO_MACRO_BODY
+#ifndef INTEL_NO_ITTNOTIFY_API
+ITT_STUBV(ITTAPI, void, model_task_begin, (__itt_model_task *task, __itt_model_task_instance *instance, const char *name))
+#if ITT_PLATFORM==ITT_PLATFORM_WIN
+ITT_STUBV(ITTAPI, void, model_task_beginW, (const wchar_t *name))
+ITT_STUBV(ITTAPI, void, model_iteration_taskW, (const wchar_t *name))
+#endif
+ITT_STUBV(ITTAPI, void, model_task_beginA, (const char *name))
+ITT_STUBV(ITTAPI, void, model_task_beginAL, (const char *name, size_t taskNameLen))
+ITT_STUBV(ITTAPI, void, model_iteration_taskA, (const char *name))
+ITT_STUBV(ITTAPI, void, model_iteration_taskAL, (const char *name, size_t taskNameLen))
+ITT_STUBV(ITTAPI, void, model_task_end, (__itt_model_task *task, __itt_model_task_instance *instance))
+ITT_STUBV(ITTAPI, void, model_task_end_2, (void))
+#define __itt_model_task_begin ITTNOTIFY_VOID(model_task_begin)
+#define __itt_model_task_begin_ptr ITTNOTIFY_NAME(model_task_begin)
+#if ITT_PLATFORM==ITT_PLATFORM_WIN
+#define __itt_model_task_beginW ITTNOTIFY_VOID(model_task_beginW)
+#define __itt_model_task_beginW_ptr ITTNOTIFY_NAME(model_task_beginW)
+#define __itt_model_iteration_taskW ITTNOTIFY_VOID(model_iteration_taskW)
+#define __itt_model_iteration_taskW_ptr ITTNOTIFY_NAME(model_iteration_taskW)
+#endif
+#define __itt_model_task_beginA ITTNOTIFY_VOID(model_task_beginA)
+#define __itt_model_task_beginA_ptr ITTNOTIFY_NAME(model_task_beginA)
+#define __itt_model_task_beginAL ITTNOTIFY_VOID(model_task_beginAL)
+#define __itt_model_task_beginAL_ptr ITTNOTIFY_NAME(model_task_beginAL)
+#define __itt_model_iteration_taskA ITTNOTIFY_VOID(model_iteration_taskA)
+#define __itt_model_iteration_taskA_ptr ITTNOTIFY_NAME(model_iteration_taskA)
+#define __itt_model_iteration_taskAL ITTNOTIFY_VOID(model_iteration_taskAL)
+#define __itt_model_iteration_taskAL_ptr ITTNOTIFY_NAME(model_iteration_taskAL)
+#define __itt_model_task_end ITTNOTIFY_VOID(model_task_end)
+#define __itt_model_task_end_ptr ITTNOTIFY_NAME(model_task_end)
+#define __itt_model_task_end_2 ITTNOTIFY_VOID(model_task_end_2)
+#define __itt_model_task_end_2_ptr ITTNOTIFY_NAME(model_task_end_2)
+#else /* INTEL_NO_ITTNOTIFY_API */
+#define __itt_model_task_begin(task, instance, name)
+#define __itt_model_task_begin_ptr 0
+#if ITT_PLATFORM==ITT_PLATFORM_WIN
+#define __itt_model_task_beginW(name)
+#define __itt_model_task_beginW_ptr 0
+#endif
+#define __itt_model_task_beginA(name)
+#define __itt_model_task_beginA_ptr 0
+#define __itt_model_task_beginAL(name, siteNameLen)
+#define __itt_model_task_beginAL_ptr 0
+#define __itt_model_iteration_taskA(name)
+#define __itt_model_iteration_taskA_ptr 0
+#define __itt_model_iteration_taskAL(name, siteNameLen)
+#define __itt_model_iteration_taskAL_ptr 0
+#define __itt_model_task_end(task, instance)
+#define __itt_model_task_end_ptr 0
+#define __itt_model_task_end_2()
+#define __itt_model_task_end_2_ptr 0
+#endif /* INTEL_NO_ITTNOTIFY_API */
+#else /* INTEL_NO_MACRO_BODY */
+#define __itt_model_task_begin_ptr 0
+#if ITT_PLATFORM==ITT_PLATFORM_WIN
+#define __itt_model_task_beginW_ptr 0
+#endif
+#define __itt_model_task_beginA_ptr 0
+#define __itt_model_task_beginAL_ptr 0
+#define __itt_model_iteration_taskA_ptr 0
+#define __itt_model_iteration_taskAL_ptr 0
+#define __itt_model_task_end_ptr 0
+#define __itt_model_task_end_2_ptr 0
+#endif /* INTEL_NO_MACRO_BODY */
+/** @endcond */
+
+/**
+ * @brief ANNOTATE_LOCK_ACQUIRE/ANNOTATE_LOCK_RELEASE support
+ *
+ * lock_acquire/release model a potential lock for both lockset and
+ * performance modeling. Each unique address is modeled as a separate
+ * lock, with invalid addresses being valid lock IDs. Specifically:
+ * no storage is accessed by the API at the specified address - it is only
+ * used for lock identification. Lock acquires may be self-nested and are
+ * unlocked by a corresponding number of releases.
+ * (These closely correspond to __itt_sync_acquired/__itt_sync_releasing,
+ * but may not have identical semantics.)
+ */
+void ITTAPI __itt_model_lock_acquire(void *lock);
+void ITTAPI __itt_model_lock_acquire_2(void *lock);
+void ITTAPI __itt_model_lock_release(void *lock);
+void ITTAPI __itt_model_lock_release_2(void *lock);
+
+/** @cond exclude_from_documentation */
+#ifndef INTEL_NO_MACRO_BODY
+#ifndef INTEL_NO_ITTNOTIFY_API
+ITT_STUBV(ITTAPI, void, model_lock_acquire, (void *lock))
+ITT_STUBV(ITTAPI, void, model_lock_acquire_2, (void *lock))
+ITT_STUBV(ITTAPI, void, model_lock_release, (void *lock))
+ITT_STUBV(ITTAPI, void, model_lock_release_2, (void *lock))
+#define __itt_model_lock_acquire ITTNOTIFY_VOID(model_lock_acquire)
+#define __itt_model_lock_acquire_ptr ITTNOTIFY_NAME(model_lock_acquire)
+#define __itt_model_lock_acquire_2 ITTNOTIFY_VOID(model_lock_acquire_2)
+#define __itt_model_lock_acquire_2_ptr ITTNOTIFY_NAME(model_lock_acquire_2)
+#define __itt_model_lock_release ITTNOTIFY_VOID(model_lock_release)
+#define __itt_model_lock_release_ptr ITTNOTIFY_NAME(model_lock_release)
+#define __itt_model_lock_release_2 ITTNOTIFY_VOID(model_lock_release_2)
+#define __itt_model_lock_release_2_ptr ITTNOTIFY_NAME(model_lock_release_2)
+#else /* INTEL_NO_ITTNOTIFY_API */
+#define __itt_model_lock_acquire(lock)
+#define __itt_model_lock_acquire_ptr 0
+#define __itt_model_lock_acquire_2(lock)
+#define __itt_model_lock_acquire_2_ptr 0
+#define __itt_model_lock_release(lock)
+#define __itt_model_lock_release_ptr 0
+#define __itt_model_lock_release_2(lock)
+#define __itt_model_lock_release_2_ptr 0
+#endif /* INTEL_NO_ITTNOTIFY_API */
+#else /* INTEL_NO_MACRO_BODY */
+#define __itt_model_lock_acquire_ptr 0
+#define __itt_model_lock_acquire_2_ptr 0
+#define __itt_model_lock_release_ptr 0
+#define __itt_model_lock_release_2_ptr 0
+#endif /* INTEL_NO_MACRO_BODY */
+/** @endcond */
+
+/**
+ * @brief ANNOTATE_RECORD_ALLOCATION/ANNOTATE_RECORD_DEALLOCATION support
+ *
+ * record_allocation/deallocation describe user-defined memory allocator
+ * behavior, which may be required for correctness modeling to understand
+ * when storage is not expected to be actually reused across threads.
+ */
+void ITTAPI __itt_model_record_allocation (void *addr, size_t size);
+void ITTAPI __itt_model_record_deallocation(void *addr);
+
+/** @cond exclude_from_documentation */
+#ifndef INTEL_NO_MACRO_BODY
+#ifndef INTEL_NO_ITTNOTIFY_API
+ITT_STUBV(ITTAPI, void, model_record_allocation, (void *addr, size_t size))
+ITT_STUBV(ITTAPI, void, model_record_deallocation, (void *addr))
+#define __itt_model_record_allocation ITTNOTIFY_VOID(model_record_allocation)
+#define __itt_model_record_allocation_ptr ITTNOTIFY_NAME(model_record_allocation)
+#define __itt_model_record_deallocation ITTNOTIFY_VOID(model_record_deallocation)
+#define __itt_model_record_deallocation_ptr ITTNOTIFY_NAME(model_record_deallocation)
+#else /* INTEL_NO_ITTNOTIFY_API */
+#define __itt_model_record_allocation(addr, size)
+#define __itt_model_record_allocation_ptr 0
+#define __itt_model_record_deallocation(addr)
+#define __itt_model_record_deallocation_ptr 0
+#endif /* INTEL_NO_ITTNOTIFY_API */
+#else /* INTEL_NO_MACRO_BODY */
+#define __itt_model_record_allocation_ptr 0
+#define __itt_model_record_deallocation_ptr 0
+#endif /* INTEL_NO_MACRO_BODY */
+/** @endcond */
+
+/**
+ * @brief ANNOTATE_INDUCTION_USES support
+ *
+ * Note particular storage is inductive through the end of the current site
+ */
+void ITTAPI __itt_model_induction_uses(void* addr, size_t size);
+
+/** @cond exclude_from_documentation */
+#ifndef INTEL_NO_MACRO_BODY
+#ifndef INTEL_NO_ITTNOTIFY_API
+ITT_STUBV(ITTAPI, void, model_induction_uses, (void *addr, size_t size))
+#define __itt_model_induction_uses ITTNOTIFY_VOID(model_induction_uses)
+#define __itt_model_induction_uses_ptr ITTNOTIFY_NAME(model_induction_uses)
+#else /* INTEL_NO_ITTNOTIFY_API */
+#define __itt_model_induction_uses(addr, size)
+#define __itt_model_induction_uses_ptr 0
+#endif /* INTEL_NO_ITTNOTIFY_API */
+#else /* INTEL_NO_MACRO_BODY */
+#define __itt_model_induction_uses_ptr 0
+#endif /* INTEL_NO_MACRO_BODY */
+/** @endcond */
+
+/**
+ * @brief ANNOTATE_REDUCTION_USES support
+ *
+ * Note particular storage is used for reduction through the end
+ * of the current site
+ */
+void ITTAPI __itt_model_reduction_uses(void* addr, size_t size);
+
+/** @cond exclude_from_documentation */
+#ifndef INTEL_NO_MACRO_BODY
+#ifndef INTEL_NO_ITTNOTIFY_API
+ITT_STUBV(ITTAPI, void, model_reduction_uses, (void *addr, size_t size))
+#define __itt_model_reduction_uses ITTNOTIFY_VOID(model_reduction_uses)
+#define __itt_model_reduction_uses_ptr ITTNOTIFY_NAME(model_reduction_uses)
+#else /* INTEL_NO_ITTNOTIFY_API */
+#define __itt_model_reduction_uses(addr, size)
+#define __itt_model_reduction_uses_ptr 0
+#endif /* INTEL_NO_ITTNOTIFY_API */
+#else /* INTEL_NO_MACRO_BODY */
+#define __itt_model_reduction_uses_ptr 0
+#endif /* INTEL_NO_MACRO_BODY */
+/** @endcond */
+
+/**
+ * @brief ANNOTATE_OBSERVE_USES support
+ *
+ * Have correctness modeling record observations about uses of storage
+ * through the end of the current site
+ */
+void ITTAPI __itt_model_observe_uses(void* addr, size_t size);
+
+/** @cond exclude_from_documentation */
+#ifndef INTEL_NO_MACRO_BODY
+#ifndef INTEL_NO_ITTNOTIFY_API
+ITT_STUBV(ITTAPI, void, model_observe_uses, (void *addr, size_t size))
+#define __itt_model_observe_uses ITTNOTIFY_VOID(model_observe_uses)
+#define __itt_model_observe_uses_ptr ITTNOTIFY_NAME(model_observe_uses)
+#else /* INTEL_NO_ITTNOTIFY_API */
+#define __itt_model_observe_uses(addr, size)
+#define __itt_model_observe_uses_ptr 0
+#endif /* INTEL_NO_ITTNOTIFY_API */
+#else /* INTEL_NO_MACRO_BODY */
+#define __itt_model_observe_uses_ptr 0
+#endif /* INTEL_NO_MACRO_BODY */
+/** @endcond */
+
+/**
+ * @brief ANNOTATE_CLEAR_USES support
+ *
+ * Clear the special handling of a piece of storage related to induction,
+ * reduction or observe_uses
+ */
+void ITTAPI __itt_model_clear_uses(void* addr);
+
+/** @cond exclude_from_documentation */
+#ifndef INTEL_NO_MACRO_BODY
+#ifndef INTEL_NO_ITTNOTIFY_API
+ITT_STUBV(ITTAPI, void, model_clear_uses, (void *addr))
+#define __itt_model_clear_uses ITTNOTIFY_VOID(model_clear_uses)
+#define __itt_model_clear_uses_ptr ITTNOTIFY_NAME(model_clear_uses)
+#else /* INTEL_NO_ITTNOTIFY_API */
+#define __itt_model_clear_uses(addr)
+#define __itt_model_clear_uses_ptr 0
+#endif /* INTEL_NO_ITTNOTIFY_API */
+#else /* INTEL_NO_MACRO_BODY */
+#define __itt_model_clear_uses_ptr 0
+#endif /* INTEL_NO_MACRO_BODY */
+/** @endcond */
+
+/**
+ * @brief ANNOTATE_DISABLE_*_PUSH/ANNOTATE_DISABLE_*_POP support
+ *
+ * disable_push/disable_pop push and pop disabling based on a parameter.
+ * Disabling observations stops processing of memory references during
+ * correctness modeling, and all annotations that occur in the disabled
+ * region. This allows description of code that is expected to be handled
+ * specially during conversion to parallelism or that is not recognized
+ * by tools (e.g. some kinds of synchronization operations.)
+ * This mechanism causes all annotations in the disabled region, other
+ * than disable_push and disable_pop, to be ignored. (For example, this
+ * might validly be used to disable an entire parallel site and the contained
+ * tasks and locking in it for data collection purposes.)
+ * The disable for collection is a more expensive operation, but reduces
+ * collector overhead significantly. This applies to BOTH correctness data
+ * collection and performance data collection. For example, a site
+ * containing a task might only enable data collection for the first 10
+ * iterations. Both performance and correctness data should reflect this,
+ * and the program should run as close to full speed as possible when
+ * collection is disabled.
+ */
+void ITTAPI __itt_model_disable_push(__itt_model_disable x);
+void ITTAPI __itt_model_disable_pop(void);
+void ITTAPI __itt_model_aggregate_task(size_t x);
+
+/** @cond exclude_from_documentation */
+#ifndef INTEL_NO_MACRO_BODY
+#ifndef INTEL_NO_ITTNOTIFY_API
+ITT_STUBV(ITTAPI, void, model_disable_push, (__itt_model_disable x))
+ITT_STUBV(ITTAPI, void, model_disable_pop, (void))
+ITT_STUBV(ITTAPI, void, model_aggregate_task, (size_t x))
+#define __itt_model_disable_push ITTNOTIFY_VOID(model_disable_push)
+#define __itt_model_disable_push_ptr ITTNOTIFY_NAME(model_disable_push)
+#define __itt_model_disable_pop ITTNOTIFY_VOID(model_disable_pop)
+#define __itt_model_disable_pop_ptr ITTNOTIFY_NAME(model_disable_pop)
+#define __itt_model_aggregate_task ITTNOTIFY_VOID(model_aggregate_task)
+#define __itt_model_aggregate_task_ptr ITTNOTIFY_NAME(model_aggregate_task)
+#else /* INTEL_NO_ITTNOTIFY_API */
+#define __itt_model_disable_push(x)
+#define __itt_model_disable_push_ptr 0
+#define __itt_model_disable_pop()
+#define __itt_model_disable_pop_ptr 0
+#define __itt_model_aggregate_task(x)
+#define __itt_model_aggregate_task_ptr 0
+#endif /* INTEL_NO_ITTNOTIFY_API */
+#else /* INTEL_NO_MACRO_BODY */
+#define __itt_model_disable_push_ptr 0
+#define __itt_model_disable_pop_ptr 0
+#define __itt_model_aggregate_task_ptr 0
+#endif /* INTEL_NO_MACRO_BODY */
+/** @endcond */
+/** @} model group */
+
+/**
+ * @defgroup heap Heap
+ * @ingroup public
+ * Heap group
+ * @{
+ */
+
+typedef void* __itt_heap_function;
+
+/**
+ * @brief Create an identification for heap function
+ * @return non-zero identifier or NULL
+ */
+#if ITT_PLATFORM==ITT_PLATFORM_WIN
+__itt_heap_function ITTAPI __itt_heap_function_createA(const char* name, const char* domain);
+__itt_heap_function ITTAPI __itt_heap_function_createW(const wchar_t* name, const wchar_t* domain);
+#if defined(UNICODE) || defined(_UNICODE)
+# define __itt_heap_function_create __itt_heap_function_createW
+# define __itt_heap_function_create_ptr __itt_heap_function_createW_ptr
+#else
+# define __itt_heap_function_create __itt_heap_function_createA
+# define __itt_heap_function_create_ptr __itt_heap_function_createA_ptr
+#endif /* UNICODE */
+#else /* ITT_PLATFORM==ITT_PLATFORM_WIN */
+__itt_heap_function ITTAPI __itt_heap_function_create(const char* name, const char* domain);
+#endif /* ITT_PLATFORM==ITT_PLATFORM_WIN */
+
+/** @cond exclude_from_documentation */
+#ifndef INTEL_NO_MACRO_BODY
+#ifndef INTEL_NO_ITTNOTIFY_API
+#if ITT_PLATFORM==ITT_PLATFORM_WIN
+ITT_STUB(ITTAPI, __itt_heap_function, heap_function_createA, (const char* name, const char* domain))
+ITT_STUB(ITTAPI, __itt_heap_function, heap_function_createW, (const wchar_t* name, const wchar_t* domain))
+#else /* ITT_PLATFORM==ITT_PLATFORM_WIN */
+ITT_STUB(ITTAPI, __itt_heap_function, heap_function_create, (const char* name, const char* domain))
+#endif /* ITT_PLATFORM==ITT_PLATFORM_WIN */
+#if ITT_PLATFORM==ITT_PLATFORM_WIN
+#define __itt_heap_function_createA ITTNOTIFY_DATA(heap_function_createA)
+#define __itt_heap_function_createA_ptr ITTNOTIFY_NAME(heap_function_createA)
+#define __itt_heap_function_createW ITTNOTIFY_DATA(heap_function_createW)
+#define __itt_heap_function_createW_ptr ITTNOTIFY_NAME(heap_function_createW)
+#else /* ITT_PLATFORM==ITT_PLATFORM_WIN */
+#define __itt_heap_function_create ITTNOTIFY_DATA(heap_function_create)
+#define __itt_heap_function_create_ptr ITTNOTIFY_NAME(heap_function_create)
+#endif /* ITT_PLATFORM==ITT_PLATFORM_WIN */
+#else /* INTEL_NO_ITTNOTIFY_API */
+#if ITT_PLATFORM==ITT_PLATFORM_WIN
+#define __itt_heap_function_createA(name, domain) (__itt_heap_function)0
+#define __itt_heap_function_createA_ptr 0
+#define __itt_heap_function_createW(name, domain) (__itt_heap_function)0
+#define __itt_heap_function_createW_ptr 0
+#else /* ITT_PLATFORM==ITT_PLATFORM_WIN */
+#define __itt_heap_function_create(name, domain) (__itt_heap_function)0
+#define __itt_heap_function_create_ptr 0
+#endif /* ITT_PLATFORM==ITT_PLATFORM_WIN */
+#endif /* INTEL_NO_ITTNOTIFY_API */
+#else /* INTEL_NO_MACRO_BODY */
+#if ITT_PLATFORM==ITT_PLATFORM_WIN
+#define __itt_heap_function_createA_ptr 0
+#define __itt_heap_function_createW_ptr 0
+#else /* ITT_PLATFORM==ITT_PLATFORM_WIN */
+#define __itt_heap_function_create_ptr 0
+#endif /* ITT_PLATFORM==ITT_PLATFORM_WIN */
+#endif /* INTEL_NO_MACRO_BODY */
+/** @endcond */
+
+/**
+ * @brief Record an allocation begin occurrence.
+ */
+void ITTAPI __itt_heap_allocate_begin(__itt_heap_function h, size_t size, int initialized);
+
+/** @cond exclude_from_documentation */
+#ifndef INTEL_NO_MACRO_BODY
+#ifndef INTEL_NO_ITTNOTIFY_API
+ITT_STUBV(ITTAPI, void, heap_allocate_begin, (__itt_heap_function h, size_t size, int initialized))
+#define __itt_heap_allocate_begin ITTNOTIFY_VOID(heap_allocate_begin)
+#define __itt_heap_allocate_begin_ptr ITTNOTIFY_NAME(heap_allocate_begin)
+#else /* INTEL_NO_ITTNOTIFY_API */
+#define __itt_heap_allocate_begin(h, size, initialized)
+#define __itt_heap_allocate_begin_ptr 0
+#endif /* INTEL_NO_ITTNOTIFY_API */
+#else /* INTEL_NO_MACRO_BODY */
+#define __itt_heap_allocate_begin_ptr 0
+#endif /* INTEL_NO_MACRO_BODY */
+/** @endcond */
+
+/**
+ * @brief Record an allocation end occurrence.
+ */
+void ITTAPI __itt_heap_allocate_end(__itt_heap_function h, void** addr, size_t size, int initialized);
+
+/** @cond exclude_from_documentation */
+#ifndef INTEL_NO_MACRO_BODY
+#ifndef INTEL_NO_ITTNOTIFY_API
+ITT_STUBV(ITTAPI, void, heap_allocate_end, (__itt_heap_function h, void** addr, size_t size, int initialized))
+#define __itt_heap_allocate_end ITTNOTIFY_VOID(heap_allocate_end)
+#define __itt_heap_allocate_end_ptr ITTNOTIFY_NAME(heap_allocate_end)
+#else /* INTEL_NO_ITTNOTIFY_API */
+#define __itt_heap_allocate_end(h, addr, size, initialized)
+#define __itt_heap_allocate_end_ptr 0
+#endif /* INTEL_NO_ITTNOTIFY_API */
+#else /* INTEL_NO_MACRO_BODY */
+#define __itt_heap_allocate_end_ptr 0
+#endif /* INTEL_NO_MACRO_BODY */
+/** @endcond */
+
+/**
+ * @brief Record an free begin occurrence.
+ */
+void ITTAPI __itt_heap_free_begin(__itt_heap_function h, void* addr);
+
+/** @cond exclude_from_documentation */
+#ifndef INTEL_NO_MACRO_BODY
+#ifndef INTEL_NO_ITTNOTIFY_API
+ITT_STUBV(ITTAPI, void, heap_free_begin, (__itt_heap_function h, void* addr))
+#define __itt_heap_free_begin ITTNOTIFY_VOID(heap_free_begin)
+#define __itt_heap_free_begin_ptr ITTNOTIFY_NAME(heap_free_begin)
+#else /* INTEL_NO_ITTNOTIFY_API */
+#define __itt_heap_free_begin(h, addr)
+#define __itt_heap_free_begin_ptr 0
+#endif /* INTEL_NO_ITTNOTIFY_API */
+#else /* INTEL_NO_MACRO_BODY */
+#define __itt_heap_free_begin_ptr 0
+#endif /* INTEL_NO_MACRO_BODY */
+/** @endcond */
+
+/**
+ * @brief Record an free end occurrence.
+ */
+void ITTAPI __itt_heap_free_end(__itt_heap_function h, void* addr);
+
+/** @cond exclude_from_documentation */
+#ifndef INTEL_NO_MACRO_BODY
+#ifndef INTEL_NO_ITTNOTIFY_API
+ITT_STUBV(ITTAPI, void, heap_free_end, (__itt_heap_function h, void* addr))
+#define __itt_heap_free_end ITTNOTIFY_VOID(heap_free_end)
+#define __itt_heap_free_end_ptr ITTNOTIFY_NAME(heap_free_end)
+#else /* INTEL_NO_ITTNOTIFY_API */
+#define __itt_heap_free_end(h, addr)
+#define __itt_heap_free_end_ptr 0
+#endif /* INTEL_NO_ITTNOTIFY_API */
+#else /* INTEL_NO_MACRO_BODY */
+#define __itt_heap_free_end_ptr 0
+#endif /* INTEL_NO_MACRO_BODY */
+/** @endcond */
+
+/**
+ * @brief Record an reallocation begin occurrence.
+ */
+void ITTAPI __itt_heap_reallocate_begin(__itt_heap_function h, void* addr, size_t new_size, int initialized);
+
+/** @cond exclude_from_documentation */
+#ifndef INTEL_NO_MACRO_BODY
+#ifndef INTEL_NO_ITTNOTIFY_API
+ITT_STUBV(ITTAPI, void, heap_reallocate_begin, (__itt_heap_function h, void* addr, size_t new_size, int initialized))
+#define __itt_heap_reallocate_begin ITTNOTIFY_VOID(heap_reallocate_begin)
+#define __itt_heap_reallocate_begin_ptr ITTNOTIFY_NAME(heap_reallocate_begin)
+#else /* INTEL_NO_ITTNOTIFY_API */
+#define __itt_heap_reallocate_begin(h, addr, new_size, initialized)
+#define __itt_heap_reallocate_begin_ptr 0
+#endif /* INTEL_NO_ITTNOTIFY_API */
+#else /* INTEL_NO_MACRO_BODY */
+#define __itt_heap_reallocate_begin_ptr 0
+#endif /* INTEL_NO_MACRO_BODY */
+/** @endcond */
+
+/**
+ * @brief Record an reallocation end occurrence.
+ */
+void ITTAPI __itt_heap_reallocate_end(__itt_heap_function h, void* addr, void** new_addr, size_t new_size, int initialized);
+
+/** @cond exclude_from_documentation */
+#ifndef INTEL_NO_MACRO_BODY
+#ifndef INTEL_NO_ITTNOTIFY_API
+ITT_STUBV(ITTAPI, void, heap_reallocate_end, (__itt_heap_function h, void* addr, void** new_addr, size_t new_size, int initialized))
+#define __itt_heap_reallocate_end ITTNOTIFY_VOID(heap_reallocate_end)
+#define __itt_heap_reallocate_end_ptr ITTNOTIFY_NAME(heap_reallocate_end)
+#else /* INTEL_NO_ITTNOTIFY_API */
+#define __itt_heap_reallocate_end(h, addr, new_addr, new_size, initialized)
+#define __itt_heap_reallocate_end_ptr 0
+#endif /* INTEL_NO_ITTNOTIFY_API */
+#else /* INTEL_NO_MACRO_BODY */
+#define __itt_heap_reallocate_end_ptr 0
+#endif /* INTEL_NO_MACRO_BODY */
+/** @endcond */
+
+/** @brief internal access begin */
+void ITTAPI __itt_heap_internal_access_begin(void);
+
+/** @cond exclude_from_documentation */
+#ifndef INTEL_NO_MACRO_BODY
+#ifndef INTEL_NO_ITTNOTIFY_API
+ITT_STUBV(ITTAPI, void, heap_internal_access_begin, (void))
+#define __itt_heap_internal_access_begin ITTNOTIFY_VOID(heap_internal_access_begin)
+#define __itt_heap_internal_access_begin_ptr ITTNOTIFY_NAME(heap_internal_access_begin)
+#else /* INTEL_NO_ITTNOTIFY_API */
+#define __itt_heap_internal_access_begin()
+#define __itt_heap_internal_access_begin_ptr 0
+#endif /* INTEL_NO_ITTNOTIFY_API */
+#else /* INTEL_NO_MACRO_BODY */
+#define __itt_heap_internal_access_begin_ptr 0
+#endif /* INTEL_NO_MACRO_BODY */
+/** @endcond */
+
+/** @brief internal access end */
+void ITTAPI __itt_heap_internal_access_end(void);
+
+/** @cond exclude_from_documentation */
+#ifndef INTEL_NO_MACRO_BODY
+#ifndef INTEL_NO_ITTNOTIFY_API
+ITT_STUBV(ITTAPI, void, heap_internal_access_end, (void))
+#define __itt_heap_internal_access_end ITTNOTIFY_VOID(heap_internal_access_end)
+#define __itt_heap_internal_access_end_ptr ITTNOTIFY_NAME(heap_internal_access_end)
+#else /* INTEL_NO_ITTNOTIFY_API */
+#define __itt_heap_internal_access_end()
+#define __itt_heap_internal_access_end_ptr 0
+#endif /* INTEL_NO_ITTNOTIFY_API */
+#else /* INTEL_NO_MACRO_BODY */
+#define __itt_heap_internal_access_end_ptr 0
+#endif /* INTEL_NO_MACRO_BODY */
+/** @endcond */
+
+/** @brief record memory growth begin */
+void ITTAPI __itt_heap_record_memory_growth_begin(void);
+
+/** @cond exclude_from_documentation */
+#ifndef INTEL_NO_MACRO_BODY
+#ifndef INTEL_NO_ITTNOTIFY_API
+ITT_STUBV(ITTAPI, void, heap_record_memory_growth_begin, (void))
+#define __itt_heap_record_memory_growth_begin ITTNOTIFY_VOID(heap_record_memory_growth_begin)
+#define __itt_heap_record_memory_growth_begin_ptr ITTNOTIFY_NAME(heap_record_memory_growth_begin)
+#else /* INTEL_NO_ITTNOTIFY_API */
+#define __itt_heap_record_memory_growth_begin()
+#define __itt_heap_record_memory_growth_begin_ptr 0
+#endif /* INTEL_NO_ITTNOTIFY_API */
+#else /* INTEL_NO_MACRO_BODY */
+#define __itt_heap_record_memory_growth_begin_ptr 0
+#endif /* INTEL_NO_MACRO_BODY */
+/** @endcond */
+
+/** @brief record memory growth end */
+void ITTAPI __itt_heap_record_memory_growth_end(void);
+
+/** @cond exclude_from_documentation */
+#ifndef INTEL_NO_MACRO_BODY
+#ifndef INTEL_NO_ITTNOTIFY_API
+ITT_STUBV(ITTAPI, void, heap_record_memory_growth_end, (void))
+#define __itt_heap_record_memory_growth_end ITTNOTIFY_VOID(heap_record_memory_growth_end)
+#define __itt_heap_record_memory_growth_end_ptr ITTNOTIFY_NAME(heap_record_memory_growth_end)
+#else /* INTEL_NO_ITTNOTIFY_API */
+#define __itt_heap_record_memory_growth_end()
+#define __itt_heap_record_memory_growth_end_ptr 0
+#endif /* INTEL_NO_ITTNOTIFY_API */
+#else /* INTEL_NO_MACRO_BODY */
+#define __itt_heap_record_memory_growth_end_ptr 0
+#endif /* INTEL_NO_MACRO_BODY */
+/** @endcond */
+
+/**
+ * @brief Specify the type of heap detection/reporting to modify.
+ */
+/**
+ * @hideinitializer
+ * @brief Report on memory leaks.
+ */
+#define __itt_heap_leaks 0x00000001
+
+/**
+ * @hideinitializer
+ * @brief Report on memory growth.
+ */
+#define __itt_heap_growth 0x00000002
+
+
+/** @brief heap reset detection */
+void ITTAPI __itt_heap_reset_detection(unsigned int reset_mask);
+
+/** @cond exclude_from_documentation */
+#ifndef INTEL_NO_MACRO_BODY
+#ifndef INTEL_NO_ITTNOTIFY_API
+ITT_STUBV(ITTAPI, void, heap_reset_detection, (unsigned int reset_mask))
+#define __itt_heap_reset_detection ITTNOTIFY_VOID(heap_reset_detection)
+#define __itt_heap_reset_detection_ptr ITTNOTIFY_NAME(heap_reset_detection)
+#else /* INTEL_NO_ITTNOTIFY_API */
+#define __itt_heap_reset_detection()
+#define __itt_heap_reset_detection_ptr 0
+#endif /* INTEL_NO_ITTNOTIFY_API */
+#else /* INTEL_NO_MACRO_BODY */
+#define __itt_heap_reset_detection_ptr 0
+#endif /* INTEL_NO_MACRO_BODY */
+/** @endcond */
+
+/** @brief report */
+void ITTAPI __itt_heap_record(unsigned int record_mask);
+
+/** @cond exclude_from_documentation */
+#ifndef INTEL_NO_MACRO_BODY
+#ifndef INTEL_NO_ITTNOTIFY_API
+ITT_STUBV(ITTAPI, void, heap_record, (unsigned int record_mask))
+#define __itt_heap_record ITTNOTIFY_VOID(heap_record)
+#define __itt_heap_record_ptr ITTNOTIFY_NAME(heap_record)
+#else /* INTEL_NO_ITTNOTIFY_API */
+#define __itt_heap_record()
+#define __itt_heap_record_ptr 0
+#endif /* INTEL_NO_ITTNOTIFY_API */
+#else /* INTEL_NO_MACRO_BODY */
+#define __itt_heap_record_ptr 0
+#endif /* INTEL_NO_MACRO_BODY */
+/** @endcond */
+
+/** @} heap group */
+/** @endcond */
+/* ========================================================================== */
+
+/**
+ * @defgroup domains Domains
+ * @ingroup public
+ * Domains group
+ * @{
+ */
+
+/** @cond exclude_from_documentation */
+#pragma pack(push, 8)
+
+typedef struct ___itt_domain
+{
+ volatile int flags; /*!< Zero if disabled, non-zero if enabled. The meaning of different non-zero values is reserved to the runtime */
+ const char* nameA; /*!< Copy of original name in ASCII. */
+#if defined(UNICODE) || defined(_UNICODE)
+ const wchar_t* nameW; /*!< Copy of original name in UNICODE. */
+#else /* UNICODE || _UNICODE */
+ void* nameW;
+#endif /* UNICODE || _UNICODE */
+ int extra1; /*!< Reserved to the runtime */
+ void* extra2; /*!< Reserved to the runtime */
+ struct ___itt_domain* next;
+} __itt_domain;
+
+#pragma pack(pop)
+/** @endcond */
+
+/**
+ * @ingroup domains
+ * @brief Create a domain.
+ * Create domain using some domain name: the URI naming style is recommended.
+ * Because the set of domains is expected to be static over the application's
+ * execution time, there is no mechanism to destroy a domain.
+ * Any domain can be accessed by any thread in the process, regardless of
+ * which thread created the domain. This call is thread-safe.
+ * @param[in] name name of domain
+ */
+#if ITT_PLATFORM==ITT_PLATFORM_WIN
+__itt_domain* ITTAPI __itt_domain_createA(const char *name);
+__itt_domain* ITTAPI __itt_domain_createW(const wchar_t *name);
+#if defined(UNICODE) || defined(_UNICODE)
+# define __itt_domain_create __itt_domain_createW
+# define __itt_domain_create_ptr __itt_domain_createW_ptr
+#else /* UNICODE */
+# define __itt_domain_create __itt_domain_createA
+# define __itt_domain_create_ptr __itt_domain_createA_ptr
+#endif /* UNICODE */
+#else /* ITT_PLATFORM==ITT_PLATFORM_WIN */
+__itt_domain* ITTAPI __itt_domain_create(const char *name);
+#endif /* ITT_PLATFORM==ITT_PLATFORM_WIN */
+
+/** @cond exclude_from_documentation */
+#ifndef INTEL_NO_MACRO_BODY
+#ifndef INTEL_NO_ITTNOTIFY_API
+#if ITT_PLATFORM==ITT_PLATFORM_WIN
+ITT_STUB(ITTAPI, __itt_domain*, domain_createA, (const char *name))
+ITT_STUB(ITTAPI, __itt_domain*, domain_createW, (const wchar_t *name))
+#else /* ITT_PLATFORM==ITT_PLATFORM_WIN */
+ITT_STUB(ITTAPI, __itt_domain*, domain_create, (const char *name))
+#endif /* ITT_PLATFORM==ITT_PLATFORM_WIN */
+#if ITT_PLATFORM==ITT_PLATFORM_WIN
+#define __itt_domain_createA ITTNOTIFY_DATA(domain_createA)
+#define __itt_domain_createA_ptr ITTNOTIFY_NAME(domain_createA)
+#define __itt_domain_createW ITTNOTIFY_DATA(domain_createW)
+#define __itt_domain_createW_ptr ITTNOTIFY_NAME(domain_createW)
+#else /* ITT_PLATFORM==ITT_PLATFORM_WIN */
+#define __itt_domain_create ITTNOTIFY_DATA(domain_create)
+#define __itt_domain_create_ptr ITTNOTIFY_NAME(domain_create)
+#endif /* ITT_PLATFORM==ITT_PLATFORM_WIN */
+#else /* INTEL_NO_ITTNOTIFY_API */
+#if ITT_PLATFORM==ITT_PLATFORM_WIN
+#define __itt_domain_createA(name) (__itt_domain*)0
+#define __itt_domain_createA_ptr 0
+#define __itt_domain_createW(name) (__itt_domain*)0
+#define __itt_domain_createW_ptr 0
+#else /* ITT_PLATFORM==ITT_PLATFORM_WIN */
+#define __itt_domain_create(name) (__itt_domain*)0
+#define __itt_domain_create_ptr 0
+#endif /* ITT_PLATFORM==ITT_PLATFORM_WIN */
+#endif /* INTEL_NO_ITTNOTIFY_API */
+#else /* INTEL_NO_MACRO_BODY */
+#if ITT_PLATFORM==ITT_PLATFORM_WIN
+#define __itt_domain_createA_ptr 0
+#define __itt_domain_createW_ptr 0
+#else /* ITT_PLATFORM==ITT_PLATFORM_WIN */
+#define __itt_domain_create_ptr 0
+#endif /* ITT_PLATFORM==ITT_PLATFORM_WIN */
+#endif /* INTEL_NO_MACRO_BODY */
+/** @endcond */
+/** @} domains group */
+
+/**
+ * @defgroup ids IDs
+ * @ingroup public
+ * IDs group
+ * @{
+ */
+
+/** @cond exclude_from_documentation */
+#pragma pack(push, 8)
+
+typedef struct ___itt_id
+{
+ unsigned long long d1, d2, d3;
+} __itt_id;
+
+#pragma pack(pop)
+/** @endcond */
+
+const __itt_id __itt_null = { 0, 0, 0 };
+
+/**
+ * @ingroup ids
+ * @brief A convenience function is provided to create an ID without domain control.
+ * @brief This is a convenience function to initialize an __itt_id structure. This function
+ * does not affect the collector runtime in any way. After you make the ID with this
+ * function, you still must create it with the __itt_id_create function before using the ID
+ * to identify a named entity.
+ * @param[in] addr The address of object; high QWORD of the ID value.
+ * @param[in] extra The extra data to unique identify object; low QWORD of the ID value.
+ */
+
+ITT_INLINE __itt_id ITTAPI __itt_id_make(void* addr, unsigned long long extra) ITT_INLINE_ATTRIBUTE;
+ITT_INLINE __itt_id ITTAPI __itt_id_make(void* addr, unsigned long long extra)
+{
+ __itt_id id = __itt_null;
+ id.d1 = (unsigned long long)((uintptr_t)addr);
+ id.d2 = (unsigned long long)extra;
+ id.d3 = (unsigned long long)0; /* Reserved. Must be zero */
+ return id;
+}
+
+/**
+ * @ingroup ids
+ * @brief Create an instance of identifier.
+ * This establishes the beginning of the lifetime of an instance of
+ * the given ID in the trace. Once this lifetime starts, the ID
+ * can be used to tag named entity instances in calls such as
+ * __itt_task_begin, and to specify relationships among
+ * identified named entity instances, using the \ref relations APIs.
+ * Instance IDs are not domain specific!
+ * @param[in] domain The domain controlling the execution of this call.
+ * @param[in] id The ID to create.
+ */
+void ITTAPI __itt_id_create(const __itt_domain *domain, __itt_id id);
+
+/** @cond exclude_from_documentation */
+#ifndef INTEL_NO_MACRO_BODY
+#ifndef INTEL_NO_ITTNOTIFY_API
+ITT_STUBV(ITTAPI, void, id_create, (const __itt_domain *domain, __itt_id id))
+#define __itt_id_create(d,x) ITTNOTIFY_VOID_D1(id_create,d,x)
+#define __itt_id_create_ptr ITTNOTIFY_NAME(id_create)
+#else /* INTEL_NO_ITTNOTIFY_API */
+#define __itt_id_create(domain,id)
+#define __itt_id_create_ptr 0
+#endif /* INTEL_NO_ITTNOTIFY_API */
+#else /* INTEL_NO_MACRO_BODY */
+#define __itt_id_create_ptr 0
+#endif /* INTEL_NO_MACRO_BODY */
+/** @endcond */
+
+/**
+ * @ingroup ids
+ * @brief Destroy an instance of identifier.
+ * This ends the lifetime of the current instance of the given ID value in the trace.
+ * Any relationships that are established after this lifetime ends are invalid.
+ * This call must be performed before the given ID value can be reused for a different
+ * named entity instance.
+ * @param[in] domain The domain controlling the execution of this call.
+ * @param[in] id The ID to destroy.
+ */
+void ITTAPI __itt_id_destroy(const __itt_domain *domain, __itt_id id);
+
+/** @cond exclude_from_documentation */
+#ifndef INTEL_NO_MACRO_BODY
+#ifndef INTEL_NO_ITTNOTIFY_API
+ITT_STUBV(ITTAPI, void, id_destroy, (const __itt_domain *domain, __itt_id id))
+#define __itt_id_destroy(d,x) ITTNOTIFY_VOID_D1(id_destroy,d,x)
+#define __itt_id_destroy_ptr ITTNOTIFY_NAME(id_destroy)
+#else /* INTEL_NO_ITTNOTIFY_API */
+#define __itt_id_destroy(domain,id)
+#define __itt_id_destroy_ptr 0
+#endif /* INTEL_NO_ITTNOTIFY_API */
+#else /* INTEL_NO_MACRO_BODY */
+#define __itt_id_destroy_ptr 0
+#endif /* INTEL_NO_MACRO_BODY */
+/** @endcond */
+/** @} ids group */
+
+/**
+ * @defgroup handless String Handles
+ * @ingroup public
+ * String Handles group
+ * @{
+ */
+
+/** @cond exclude_from_documentation */
+#pragma pack(push, 8)
+
+typedef struct ___itt_string_handle
+{
+ const char* strA; /*!< Copy of original string in ASCII. */
+#if defined(UNICODE) || defined(_UNICODE)
+ const wchar_t* strW; /*!< Copy of original string in UNICODE. */
+#else /* UNICODE || _UNICODE */
+ void* strW;
+#endif /* UNICODE || _UNICODE */
+ int extra1; /*!< Reserved. Must be zero */
+ void* extra2; /*!< Reserved. Must be zero */
+ struct ___itt_string_handle* next;
+} __itt_string_handle;
+
+#pragma pack(pop)
+/** @endcond */
+
+/**
+ * @ingroup handles
+ * @brief Create a string handle.
+ * Create and return handle value that can be associated with a string.
+ * Consecutive calls to __itt_string_handle_create with the same name
+ * return the same value. Because the set of string handles is expected to remain
+ * static during the application's execution time, there is no mechanism to destroy a string handle.
+ * Any string handle can be accessed by any thread in the process, regardless of which thread created
+ * the string handle. This call is thread-safe.
+ * @param[in] name The input string
+ */
+#if ITT_PLATFORM==ITT_PLATFORM_WIN
+__itt_string_handle* ITTAPI __itt_string_handle_createA(const char *name);
+__itt_string_handle* ITTAPI __itt_string_handle_createW(const wchar_t *name);
+#if defined(UNICODE) || defined(_UNICODE)
+# define __itt_string_handle_create __itt_string_handle_createW
+# define __itt_string_handle_create_ptr __itt_string_handle_createW_ptr
+#else /* UNICODE */
+# define __itt_string_handle_create __itt_string_handle_createA
+# define __itt_string_handle_create_ptr __itt_string_handle_createA_ptr
+#endif /* UNICODE */
+#else /* ITT_PLATFORM==ITT_PLATFORM_WIN */
+__itt_string_handle* ITTAPI __itt_string_handle_create(const char *name);
+#endif /* ITT_PLATFORM==ITT_PLATFORM_WIN */
+
+/** @cond exclude_from_documentation */
+#ifndef INTEL_NO_MACRO_BODY
+#ifndef INTEL_NO_ITTNOTIFY_API
+#if ITT_PLATFORM==ITT_PLATFORM_WIN
+ITT_STUB(ITTAPI, __itt_string_handle*, string_handle_createA, (const char *name))
+ITT_STUB(ITTAPI, __itt_string_handle*, string_handle_createW, (const wchar_t *name))
+#else /* ITT_PLATFORM==ITT_PLATFORM_WIN */
+ITT_STUB(ITTAPI, __itt_string_handle*, string_handle_create, (const char *name))
+#endif /* ITT_PLATFORM==ITT_PLATFORM_WIN */
+#if ITT_PLATFORM==ITT_PLATFORM_WIN
+#define __itt_string_handle_createA ITTNOTIFY_DATA(string_handle_createA)
+#define __itt_string_handle_createA_ptr ITTNOTIFY_NAME(string_handle_createA)
+#define __itt_string_handle_createW ITTNOTIFY_DATA(string_handle_createW)
+#define __itt_string_handle_createW_ptr ITTNOTIFY_NAME(string_handle_createW)
+#else /* ITT_PLATFORM==ITT_PLATFORM_WIN */
+#define __itt_string_handle_create ITTNOTIFY_DATA(string_handle_create)
+#define __itt_string_handle_create_ptr ITTNOTIFY_NAME(string_handle_create)
+#endif /* ITT_PLATFORM==ITT_PLATFORM_WIN */
+#else /* INTEL_NO_ITTNOTIFY_API */
+#if ITT_PLATFORM==ITT_PLATFORM_WIN
+#define __itt_string_handle_createA(name) (__itt_string_handle*)0
+#define __itt_string_handle_createA_ptr 0
+#define __itt_string_handle_createW(name) (__itt_string_handle*)0
+#define __itt_string_handle_createW_ptr 0
+#else /* ITT_PLATFORM==ITT_PLATFORM_WIN */
+#define __itt_string_handle_create(name) (__itt_string_handle*)0
+#define __itt_string_handle_create_ptr 0
+#endif /* ITT_PLATFORM==ITT_PLATFORM_WIN */
+#endif /* INTEL_NO_ITTNOTIFY_API */
+#else /* INTEL_NO_MACRO_BODY */
+#if ITT_PLATFORM==ITT_PLATFORM_WIN
+#define __itt_string_handle_createA_ptr 0
+#define __itt_string_handle_createW_ptr 0
+#else /* ITT_PLATFORM==ITT_PLATFORM_WIN */
+#define __itt_string_handle_create_ptr 0
+#endif /* ITT_PLATFORM==ITT_PLATFORM_WIN */
+#endif /* INTEL_NO_MACRO_BODY */
+/** @endcond */
+/** @} handles group */
+
+/** @cond exclude_from_documentation */
+typedef unsigned long long __itt_timestamp;
+/** @endcond */
+
+#define __itt_timestamp_none ((__itt_timestamp)-1LL)
+
+/** @cond exclude_from_gpa_documentation */
+
+/**
+ * @ingroup timestamps
+ * @brief Return timestamp corresponding to the current moment.
+ * This returns the timestamp in the format that is the most relevant for the current
+ * host or platform (RDTSC, QPC, and others). You can use the "<" operator to
+ * compare __itt_timestamp values.
+ */
+__itt_timestamp ITTAPI __itt_get_timestamp(void);
+
+/** @cond exclude_from_documentation */
+#ifndef INTEL_NO_MACRO_BODY
+#ifndef INTEL_NO_ITTNOTIFY_API
+ITT_STUB(ITTAPI, __itt_timestamp, get_timestamp, (void))
+#define __itt_get_timestamp ITTNOTIFY_DATA(get_timestamp)
+#define __itt_get_timestamp_ptr ITTNOTIFY_NAME(get_timestamp)
+#else /* INTEL_NO_ITTNOTIFY_API */
+#define __itt_get_timestamp()
+#define __itt_get_timestamp_ptr 0
+#endif /* INTEL_NO_ITTNOTIFY_API */
+#else /* INTEL_NO_MACRO_BODY */
+#define __itt_get_timestamp_ptr 0
+#endif /* INTEL_NO_MACRO_BODY */
+/** @endcond */
+/** @} timestamps */
+/** @endcond */
+
+/** @cond exclude_from_gpa_documentation */
+
+/**
+ * @defgroup regions Regions
+ * @ingroup public
+ * Regions group
+ * @{
+ */
+/**
+ * @ingroup regions
+ * @brief Begin of region instance.
+ * Successive calls to __itt_region_begin with the same ID are ignored
+ * until a call to __itt_region_end with the same ID
+ * @param[in] domain The domain for this region instance
+ * @param[in] id The instance ID for this region instance. Must not be __itt_null
+ * @param[in] parentid The instance ID for the parent of this region instance, or __itt_null
+ * @param[in] name The name of this region
+ */
+void ITTAPI __itt_region_begin(const __itt_domain *domain, __itt_id id, __itt_id parentid, __itt_string_handle *name);
+
+/**
+ * @ingroup regions
+ * @brief End of region instance.
+ * The first call to __itt_region_end with a given ID ends the
+ * region. Successive calls with the same ID are ignored, as are
+ * calls that do not have a matching __itt_region_begin call.
+ * @param[in] domain The domain for this region instance
+ * @param[in] id The instance ID for this region instance
+ */
+void ITTAPI __itt_region_end(const __itt_domain *domain, __itt_id id);
+
+/** @cond exclude_from_documentation */
+#ifndef INTEL_NO_MACRO_BODY
+#ifndef INTEL_NO_ITTNOTIFY_API
+ITT_STUBV(ITTAPI, void, region_begin, (const __itt_domain *domain, __itt_id id, __itt_id parentid, __itt_string_handle *name))
+ITT_STUBV(ITTAPI, void, region_end, (const __itt_domain *domain, __itt_id id))
+#define __itt_region_begin(d,x,y,z) ITTNOTIFY_VOID_D3(region_begin,d,x,y,z)
+#define __itt_region_begin_ptr ITTNOTIFY_NAME(region_begin)
+#define __itt_region_end(d,x) ITTNOTIFY_VOID_D1(region_end,d,x)
+#define __itt_region_end_ptr ITTNOTIFY_NAME(region_end)
+#else /* INTEL_NO_ITTNOTIFY_API */
+#define __itt_region_begin(d,x,y,z)
+#define __itt_region_begin_ptr 0
+#define __itt_region_end(d,x)
+#define __itt_region_end_ptr 0
+#endif /* INTEL_NO_ITTNOTIFY_API */
+#else /* INTEL_NO_MACRO_BODY */
+#define __itt_region_begin_ptr 0
+#define __itt_region_end_ptr 0
+#endif /* INTEL_NO_MACRO_BODY */
+/** @endcond */
+/** @} regions group */
+
+/**
+ * @defgroup frames Frames
+ * @ingroup public
+ * Frames are similar to regions, but are intended to be easier to use and to implement.
+ * In particular:
+ * - Frames always represent periods of elapsed time
+ * - By default, frames have no nesting relationships
+ * @{
+ */
+
+/**
+ * @ingroup frames
+ * @brief Begin a frame instance.
+ * Successive calls to __itt_frame_begin with the
+ * same ID are ignored until a call to __itt_frame_end with the same ID.
+ * @param[in] domain The domain for this frame instance
+ * @param[in] id The instance ID for this frame instance or NULL
+ */
+void ITTAPI __itt_frame_begin_v3(const __itt_domain *domain, __itt_id *id);
+
+/**
+ * @ingroup frames
+ * @brief End a frame instance.
+ * The first call to __itt_frame_end with a given ID
+ * ends the frame. Successive calls with the same ID are ignored, as are
+ * calls that do not have a matching __itt_frame_begin call.
+ * @param[in] domain The domain for this frame instance
+ * @param[in] id The instance ID for this frame instance or NULL for current
+ */
+void ITTAPI __itt_frame_end_v3(const __itt_domain *domain, __itt_id *id);
+
+/**
+ * @ingroup frames
+ * @brief Submits a frame instance.
+ * Successive calls to __itt_frame_begin or __itt_frame_submit with the
+ * same ID are ignored until a call to __itt_frame_end or __itt_frame_submit
+ * with the same ID.
+ * Passing special __itt_timestamp_none value as "end" argument means
+ * take the current timestamp as the end timestamp.
+ * @param[in] domain The domain for this frame instance
+ * @param[in] id The instance ID for this frame instance or NULL
+ * @param[in] begin Timestamp of the beginning of the frame
+ * @param[in] end Timestamp of the end of the frame
+ */
+void ITTAPI __itt_frame_submit_v3(const __itt_domain *domain, __itt_id *id,
+ __itt_timestamp begin, __itt_timestamp end);
+
+/** @cond exclude_from_documentation */
+#ifndef INTEL_NO_MACRO_BODY
+#ifndef INTEL_NO_ITTNOTIFY_API
+ITT_STUBV(ITTAPI, void, frame_begin_v3, (const __itt_domain *domain, __itt_id *id))
+ITT_STUBV(ITTAPI, void, frame_end_v3, (const __itt_domain *domain, __itt_id *id))
+ITT_STUBV(ITTAPI, void, frame_submit_v3, (const __itt_domain *domain, __itt_id *id, __itt_timestamp begin, __itt_timestamp end))
+#define __itt_frame_begin_v3(d,x) ITTNOTIFY_VOID_D1(frame_begin_v3,d,x)
+#define __itt_frame_begin_v3_ptr ITTNOTIFY_NAME(frame_begin_v3)
+#define __itt_frame_end_v3(d,x) ITTNOTIFY_VOID_D1(frame_end_v3,d,x)
+#define __itt_frame_end_v3_ptr ITTNOTIFY_NAME(frame_end_v3)
+#define __itt_frame_submit_v3(d,x,b,e) ITTNOTIFY_VOID_D3(frame_submit_v3,d,x,b,e)
+#define __itt_frame_submit_v3_ptr ITTNOTIFY_NAME(frame_submit_v3)
+#else /* INTEL_NO_ITTNOTIFY_API */
+#define __itt_frame_begin_v3(domain,id)
+#define __itt_frame_begin_v3_ptr 0
+#define __itt_frame_end_v3(domain,id)
+#define __itt_frame_end_v3_ptr 0
+#define __itt_frame_submit_v3(domain,id,begin,end)
+#define __itt_frame_submit_v3_ptr 0
+#endif /* INTEL_NO_ITTNOTIFY_API */
+#else /* INTEL_NO_MACRO_BODY */
+#define __itt_frame_begin_v3_ptr 0
+#define __itt_frame_end_v3_ptr 0
+#define __itt_frame_submit_v3_ptr 0
+#endif /* INTEL_NO_MACRO_BODY */
+/** @endcond */
+/** @} frames group */
+/** @endcond */
+
+/**
+ * @defgroup taskgroup Task Group
+ * @ingroup public
+ * Task Group
+ * @{
+ */
+/**
+ * @ingroup task_groups
+ * @brief Denotes a task_group instance.
+ * Successive calls to __itt_task_group with the same ID are ignored.
+ * @param[in] domain The domain for this task_group instance
+ * @param[in] id The instance ID for this task_group instance. Must not be __itt_null.
+ * @param[in] parentid The instance ID for the parent of this task_group instance, or __itt_null.
+ * @param[in] name The name of this task_group
+ */
+void ITTAPI __itt_task_group(const __itt_domain *domain, __itt_id id, __itt_id parentid, __itt_string_handle *name);
+
+/** @cond exclude_from_documentation */
+#ifndef INTEL_NO_MACRO_BODY
+#ifndef INTEL_NO_ITTNOTIFY_API
+ITT_STUBV(ITTAPI, void, task_group, (const __itt_domain *domain, __itt_id id, __itt_id parentid, __itt_string_handle *name))
+#define __itt_task_group(d,x,y,z) ITTNOTIFY_VOID_D3(task_group,d,x,y,z)
+#define __itt_task_group_ptr ITTNOTIFY_NAME(task_group)
+#else /* INTEL_NO_ITTNOTIFY_API */
+#define __itt_task_group(d,x,y,z)
+#define __itt_task_group_ptr 0
+#endif /* INTEL_NO_ITTNOTIFY_API */
+#else /* INTEL_NO_MACRO_BODY */
+#define __itt_task_group_ptr 0
+#endif /* INTEL_NO_MACRO_BODY */
+/** @endcond */
+/** @} taskgroup group */
+
+/**
+ * @defgroup tasks Tasks
+ * @ingroup public
+ * A task instance represents a piece of work performed by a particular
+ * thread for a period of time. A call to __itt_task_begin creates a
+ * task instance. This becomes the current instance for that task on that
+ * thread. A following call to __itt_task_end on the same thread ends the
+ * instance. There may be multiple simultaneous instances of tasks with the
+ * same name on different threads. If an ID is specified, the task instance
+ * receives that ID. Nested tasks are allowed.
+ *
+ * Note: The task is defined by the bracketing of __itt_task_begin and
+ * __itt_task_end on the same thread. If some scheduling mechanism causes
+ * task switching (the thread executes a different user task) or task
+ * switching (the user task switches to a different thread) then this breaks
+ * the notion of current instance. Additional API calls are required to
+ * deal with that possibility.
+ * @{
+ */
+
+/**
+ * @ingroup tasks
+ * @brief Begin a task instance.
+ * @param[in] domain The domain for this task
+ * @param[in] taskid The instance ID for this task instance, or __itt_null
+ * @param[in] parentid The parent instance to which this task instance belongs, or __itt_null
+ * @param[in] name The name of this task
+ */
+void ITTAPI __itt_task_begin(const __itt_domain *domain, __itt_id taskid, __itt_id parentid, __itt_string_handle *name);
+
+/**
+ * @ingroup tasks
+ * @brief Begin a task instance.
+ * @param[in] domain The domain for this task
+ * @param[in] taskid The identifier for this task instance (may be 0)
+ * @param[in] parentid The parent of this task (may be 0)
+ * @param[in] fn The pointer to the function you are tracing
+ */
+void ITTAPI __itt_task_begin_fn(const __itt_domain *domain, __itt_id taskid, __itt_id parentid, void* fn);
+
+/**
+ * @ingroup tasks
+ * @brief End the current task instance.
+ * @param[in] domain The domain for this task
+ */
+void ITTAPI __itt_task_end(const __itt_domain *domain);
+
+/**
+ * @ingroup tasks
+ * @brief Begin an overlapped task instance.
+ * @param[in] domain The domain for this task.
+ * @param[in] taskid The identifier for this task instance, *cannot* be __itt_null.
+ * @param[in] parentid The parent of this task, or __itt_null.
+ * @param[in] name The name of this task.
+ */
+void ITTAPI __itt_task_begin_overlapped(const __itt_domain* domain, __itt_id taskid, __itt_id parentid, __itt_string_handle* name);
+
+/**
+ * @ingroup tasks
+ * @brief End an overlapped task instance.
+ * @param[in] domain The domain for this task
+ * @param[in] taskid Explicit ID of finished task
+ */
+void ITTAPI __itt_task_end_overlapped(const __itt_domain *domain, __itt_id taskid);
+
+/** @cond exclude_from_documentation */
+#ifndef INTEL_NO_MACRO_BODY
+#ifndef INTEL_NO_ITTNOTIFY_API
+ITT_STUBV(ITTAPI, void, task_begin, (const __itt_domain *domain, __itt_id id, __itt_id parentid, __itt_string_handle *name))
+ITT_STUBV(ITTAPI, void, task_begin_fn, (const __itt_domain *domain, __itt_id id, __itt_id parentid, void* fn))
+ITT_STUBV(ITTAPI, void, task_end, (const __itt_domain *domain))
+ITT_STUBV(ITTAPI, void, task_begin_overlapped, (const __itt_domain *domain, __itt_id taskid, __itt_id parentid, __itt_string_handle *name))
+ITT_STUBV(ITTAPI, void, task_end_overlapped, (const __itt_domain *domain, __itt_id taskid))
+#define __itt_task_begin(d,x,y,z) ITTNOTIFY_VOID_D3(task_begin,d,x,y,z)
+#define __itt_task_begin_ptr ITTNOTIFY_NAME(task_begin)
+#define __itt_task_begin_fn(d,x,y,z) ITTNOTIFY_VOID_D3(task_begin_fn,d,x,y,z)
+#define __itt_task_begin_fn_ptr ITTNOTIFY_NAME(task_begin_fn)
+#define __itt_task_end(d) ITTNOTIFY_VOID_D0(task_end,d)
+#define __itt_task_end_ptr ITTNOTIFY_NAME(task_end)
+#define __itt_task_begin_overlapped(d,x,y,z) ITTNOTIFY_VOID_D3(task_begin_overlapped,d,x,y,z)
+#define __itt_task_begin_overlapped_ptr ITTNOTIFY_NAME(task_begin_overlapped)
+#define __itt_task_end_overlapped(d,x) ITTNOTIFY_VOID_D1(task_end_overlapped,d,x)
+#define __itt_task_end_overlapped_ptr ITTNOTIFY_NAME(task_end_overlapped)
+#else /* INTEL_NO_ITTNOTIFY_API */
+#define __itt_task_begin(domain,id,parentid,name)
+#define __itt_task_begin_ptr 0
+#define __itt_task_begin_fn(domain,id,parentid,fn)
+#define __itt_task_begin_fn_ptr 0
+#define __itt_task_end(domain)
+#define __itt_task_end_ptr 0
+#define __itt_task_begin_overlapped(domain,taskid,parentid,name)
+#define __itt_task_begin_overlapped_ptr 0
+#define __itt_task_end_overlapped(domain,taskid)
+#define __itt_task_end_overlapped_ptr 0
+#endif /* INTEL_NO_ITTNOTIFY_API */
+#else /* INTEL_NO_MACRO_BODY */
+#define __itt_task_begin_ptr 0
+#define __itt_task_begin_fn_ptr 0
+#define __itt_task_end_ptr 0
+#define __itt_task_begin_overlapped_ptr 0
+#define __itt_task_end_overlapped_ptr 0
+#endif /* INTEL_NO_MACRO_BODY */
+/** @endcond */
+/** @} tasks group */
+
+
+/**
+ * @defgroup markers Markers
+ * Markers represent a single discreet event in time. Markers have a scope,
+ * described by an enumerated type __itt_scope. Markers are created by
+ * the API call __itt_marker. A marker instance can be given an ID for use in
+ * adding metadata.
+ * @{
+ */
+
+/**
+ * @brief Describes the scope of an event object in the trace.
+ */
+typedef enum
+{
+ __itt_scope_unknown = 0,
+ __itt_scope_global,
+ __itt_scope_track_group,
+ __itt_scope_track,
+ __itt_scope_task,
+ __itt_scope_marker
+} __itt_scope;
+
+/** @cond exclude_from_documentation */
+#define __itt_marker_scope_unknown __itt_scope_unknown
+#define __itt_marker_scope_global __itt_scope_global
+#define __itt_marker_scope_process __itt_scope_track_group
+#define __itt_marker_scope_thread __itt_scope_track
+#define __itt_marker_scope_task __itt_scope_task
+/** @endcond */
+
+/**
+ * @ingroup markers
+ * @brief Create a marker instance
+ * @param[in] domain The domain for this marker
+ * @param[in] id The instance ID for this marker or __itt_null
+ * @param[in] name The name for this marker
+ * @param[in] scope The scope for this marker
+ */
+void ITTAPI __itt_marker(const __itt_domain *domain, __itt_id id, __itt_string_handle *name, __itt_scope scope);
+
+/** @cond exclude_from_documentation */
+#ifndef INTEL_NO_MACRO_BODY
+#ifndef INTEL_NO_ITTNOTIFY_API
+ITT_STUBV(ITTAPI, void, marker, (const __itt_domain *domain, __itt_id id, __itt_string_handle *name, __itt_scope scope))
+#define __itt_marker(d,x,y,z) ITTNOTIFY_VOID_D3(marker,d,x,y,z)
+#define __itt_marker_ptr ITTNOTIFY_NAME(marker)
+#else /* INTEL_NO_ITTNOTIFY_API */
+#define __itt_marker(domain,id,name,scope)
+#define __itt_marker_ptr 0
+#endif /* INTEL_NO_ITTNOTIFY_API */
+#else /* INTEL_NO_MACRO_BODY */
+#define __itt_marker_ptr 0
+#endif /* INTEL_NO_MACRO_BODY */
+/** @endcond */
+/** @} markers group */
+
+/**
+ * @defgroup metadata Metadata
+ * The metadata API is used to attach extra information to named
+ * entities. Metadata can be attached to an identified named entity by ID,
+ * or to the current entity (which is always a task).
+ *
+ * Conceptually metadata has a type (what kind of metadata), a key (the
+ * name of the metadata), and a value (the actual data). The encoding of
+ * the value depends on the type of the metadata.
+ *
+ * The type of metadata is specified by an enumerated type __itt_metdata_type.
+ * @{
+ */
+
+/**
+ * @ingroup parameters
+ * @brief describes the type of metadata
+ */
+typedef enum {
+ __itt_metadata_unknown = 0,
+ __itt_metadata_u64, /**< Unsigned 64-bit integer */
+ __itt_metadata_s64, /**< Signed 64-bit integer */
+ __itt_metadata_u32, /**< Unsigned 32-bit integer */
+ __itt_metadata_s32, /**< Signed 32-bit integer */
+ __itt_metadata_u16, /**< Unsigned 16-bit integer */
+ __itt_metadata_s16, /**< Signed 16-bit integer */
+ __itt_metadata_float, /**< Signed 32-bit floating-point */
+ __itt_metadata_double /**< SIgned 64-bit floating-point */
+} __itt_metadata_type;
+
+/**
+ * @ingroup parameters
+ * @brief Add metadata to an instance of a named entity.
+ * @param[in] domain The domain controlling the call
+ * @param[in] id The identifier of the instance to which the metadata is to be added, or __itt_null to add to the current task
+ * @param[in] key The name of the metadata
+ * @param[in] type The type of the metadata
+ * @param[in] count The number of elements of the given type. If count == 0, no metadata will be added.
+ * @param[in] data The metadata itself
+*/
+void ITTAPI __itt_metadata_add(const __itt_domain *domain, __itt_id id, __itt_string_handle *key, __itt_metadata_type type, size_t count, void *data);
+
+/** @cond exclude_from_documentation */
+#ifndef INTEL_NO_MACRO_BODY
+#ifndef INTEL_NO_ITTNOTIFY_API
+ITT_STUBV(ITTAPI, void, metadata_add, (const __itt_domain *domain, __itt_id id, __itt_string_handle *key, __itt_metadata_type type, size_t count, void *data))
+#define __itt_metadata_add(d,x,y,z,a,b) ITTNOTIFY_VOID_D5(metadata_add,d,x,y,z,a,b)
+#define __itt_metadata_add_ptr ITTNOTIFY_NAME(metadata_add)
+#else /* INTEL_NO_ITTNOTIFY_API */
+#define __itt_metadata_add(d,x,y,z,a,b)
+#define __itt_metadata_add_ptr 0
+#endif /* INTEL_NO_ITTNOTIFY_API */
+#else /* INTEL_NO_MACRO_BODY */
+#define __itt_metadata_add_ptr 0
+#endif /* INTEL_NO_MACRO_BODY */
+/** @endcond */
+
+/**
+ * @ingroup parameters
+ * @brief Add string metadata to an instance of a named entity.
+ * @param[in] domain The domain controlling the call
+ * @param[in] id The identifier of the instance to which the metadata is to be added, or __itt_null to add to the current task
+ * @param[in] key The name of the metadata
+ * @param[in] data The metadata itself
+ * @param[in] length The number of characters in the string, or -1 if the length is unknown but the string is null-terminated
+*/
+#if ITT_PLATFORM==ITT_PLATFORM_WIN
+void ITTAPI __itt_metadata_str_addA(const __itt_domain *domain, __itt_id id, __itt_string_handle *key, const char *data, size_t length);
+void ITTAPI __itt_metadata_str_addW(const __itt_domain *domain, __itt_id id, __itt_string_handle *key, const wchar_t *data, size_t length);
+#if defined(UNICODE) || defined(_UNICODE)
+# define __itt_metadata_str_add __itt_metadata_str_addW
+# define __itt_metadata_str_add_ptr __itt_metadata_str_addW_ptr
+#else /* UNICODE */
+# define __itt_metadata_str_add __itt_metadata_str_addA
+# define __itt_metadata_str_add_ptr __itt_metadata_str_addA_ptr
+#endif /* UNICODE */
+#else /* ITT_PLATFORM==ITT_PLATFORM_WIN */
+void ITTAPI __itt_metadata_str_add(const __itt_domain *domain, __itt_id id, __itt_string_handle *key, const char *data, size_t length);
+#endif
+
+/** @cond exclude_from_documentation */
+#ifndef INTEL_NO_MACRO_BODY
+#ifndef INTEL_NO_ITTNOTIFY_API
+#if ITT_PLATFORM==ITT_PLATFORM_WIN
+ITT_STUBV(ITTAPI, void, metadata_str_addA, (const __itt_domain *domain, __itt_id id, __itt_string_handle *key, const char *data, size_t length))
+ITT_STUBV(ITTAPI, void, metadata_str_addW, (const __itt_domain *domain, __itt_id id, __itt_string_handle *key, const wchar_t *data, size_t length))
+#else /* ITT_PLATFORM==ITT_PLATFORM_WIN */
+ITT_STUBV(ITTAPI, void, metadata_str_add, (const __itt_domain *domain, __itt_id id, __itt_string_handle *key, const char *data, size_t length))
+#endif /* ITT_PLATFORM==ITT_PLATFORM_WIN */
+#if ITT_PLATFORM==ITT_PLATFORM_WIN
+#define __itt_metadata_str_addA(d,x,y,z,a) ITTNOTIFY_VOID_D4(metadata_str_addA,d,x,y,z,a)
+#define __itt_metadata_str_addA_ptr ITTNOTIFY_NAME(metadata_str_addA)
+#define __itt_metadata_str_addW(d,x,y,z,a) ITTNOTIFY_VOID_D4(metadata_str_addW,d,x,y,z,a)
+#define __itt_metadata_str_addW_ptr ITTNOTIFY_NAME(metadata_str_addW)
+#else /* ITT_PLATFORM==ITT_PLATFORM_WIN */
+#define __itt_metadata_str_add(d,x,y,z,a) ITTNOTIFY_VOID_D4(metadata_str_add,d,x,y,z,a)
+#define __itt_metadata_str_add_ptr ITTNOTIFY_NAME(metadata_str_add)
+#endif /* ITT_PLATFORM==ITT_PLATFORM_WIN */
+#else /* INTEL_NO_ITTNOTIFY_API */
+#if ITT_PLATFORM==ITT_PLATFORM_WIN
+#define __itt_metadata_str_addA(d,x,y,z,a)
+#define __itt_metadata_str_addA_ptr 0
+#define __itt_metadata_str_addW(d,x,y,z,a)
+#define __itt_metadata_str_addW_ptr 0
+#else /* ITT_PLATFORM==ITT_PLATFORM_WIN */
+#define __itt_metadata_str_add(d,x,y,z,a)
+#define __itt_metadata_str_add_ptr 0
+#endif /* ITT_PLATFORM==ITT_PLATFORM_WIN */
+#endif /* INTEL_NO_ITTNOTIFY_API */
+#else /* INTEL_NO_MACRO_BODY */
+#if ITT_PLATFORM==ITT_PLATFORM_WIN
+#define __itt_metadata_str_addA_ptr 0
+#define __itt_metadata_str_addW_ptr 0
+#else /* ITT_PLATFORM==ITT_PLATFORM_WIN */
+#define __itt_metadata_str_add_ptr 0
+#endif /* ITT_PLATFORM==ITT_PLATFORM_WIN */
+#endif /* INTEL_NO_MACRO_BODY */
+/** @endcond */
+
+/**
+ * @ingroup parameters
+ * @brief Add metadata to an instance of a named entity.
+ * @param[in] domain The domain controlling the call
+ * @param[in] scope The scope of the instance to which the metadata is to be added
+
+ * @param[in] id The identifier of the instance to which the metadata is to be added, or __itt_null to add to the current task
+
+ * @param[in] key The name of the metadata
+ * @param[in] type The type of the metadata
+ * @param[in] count The number of elements of the given type. If count == 0, no metadata will be added.
+ * @param[in] data The metadata itself
+*/
+void ITTAPI __itt_metadata_add_with_scope(const __itt_domain *domain, __itt_scope scope, __itt_string_handle *key, __itt_metadata_type type, size_t count, void *data);
+
+/** @cond exclude_from_documentation */
+#ifndef INTEL_NO_MACRO_BODY
+#ifndef INTEL_NO_ITTNOTIFY_API
+ITT_STUBV(ITTAPI, void, metadata_add_with_scope, (const __itt_domain *domain, __itt_scope scope, __itt_string_handle *key, __itt_metadata_type type, size_t count, void *data))
+#define __itt_metadata_add_with_scope(d,x,y,z,a,b) ITTNOTIFY_VOID_D5(metadata_add_with_scope,d,x,y,z,a,b)
+#define __itt_metadata_add_with_scope_ptr ITTNOTIFY_NAME(metadata_add_with_scope)
+#else /* INTEL_NO_ITTNOTIFY_API */
+#define __itt_metadata_add_with_scope(d,x,y,z,a,b)
+#define __itt_metadata_add_with_scope_ptr 0
+#endif /* INTEL_NO_ITTNOTIFY_API */
+#else /* INTEL_NO_MACRO_BODY */
+#define __itt_metadata_add_with_scope_ptr 0
+#endif /* INTEL_NO_MACRO_BODY */
+/** @endcond */
+
+/**
+ * @ingroup parameters
+ * @brief Add string metadata to an instance of a named entity.
+ * @param[in] domain The domain controlling the call
+ * @param[in] scope The scope of the instance to which the metadata is to be added
+
+ * @param[in] id The identifier of the instance to which the metadata is to be added, or __itt_null to add to the current task
+
+ * @param[in] key The name of the metadata
+ * @param[in] data The metadata itself
+ * @param[in] length The number of characters in the string, or -1 if the length is unknown but the string is null-terminated
+*/
+#if ITT_PLATFORM==ITT_PLATFORM_WIN
+void ITTAPI __itt_metadata_str_add_with_scopeA(const __itt_domain *domain, __itt_scope scope, __itt_string_handle *key, const char *data, size_t length);
+void ITTAPI __itt_metadata_str_add_with_scopeW(const __itt_domain *domain, __itt_scope scope, __itt_string_handle *key, const wchar_t *data, size_t length);
+#if defined(UNICODE) || defined(_UNICODE)
+# define __itt_metadata_str_add_with_scope __itt_metadata_str_add_with_scopeW
+# define __itt_metadata_str_add_with_scope_ptr __itt_metadata_str_add_with_scopeW_ptr
+#else /* UNICODE */
+# define __itt_metadata_str_add_with_scope __itt_metadata_str_add_with_scopeA
+# define __itt_metadata_str_add_with_scope_ptr __itt_metadata_str_add_with_scopeA_ptr
+#endif /* UNICODE */
+#else /* ITT_PLATFORM==ITT_PLATFORM_WIN */
+void ITTAPI __itt_metadata_str_add_with_scope(const __itt_domain *domain, __itt_scope scope, __itt_string_handle *key, const char *data, size_t length);
+#endif
+
+/** @cond exclude_from_documentation */
+#ifndef INTEL_NO_MACRO_BODY
+#ifndef INTEL_NO_ITTNOTIFY_API
+#if ITT_PLATFORM==ITT_PLATFORM_WIN
+ITT_STUBV(ITTAPI, void, metadata_str_add_with_scopeA, (const __itt_domain *domain, __itt_scope scope, __itt_string_handle *key, const char *data, size_t length))
+ITT_STUBV(ITTAPI, void, metadata_str_add_with_scopeW, (const __itt_domain *domain, __itt_scope scope, __itt_string_handle *key, const wchar_t *data, size_t length))
+#else /* ITT_PLATFORM==ITT_PLATFORM_WIN */
+ITT_STUBV(ITTAPI, void, metadata_str_add_with_scope, (const __itt_domain *domain, __itt_scope scope, __itt_string_handle *key, const char *data, size_t length))
+#endif /* ITT_PLATFORM==ITT_PLATFORM_WIN */
+#if ITT_PLATFORM==ITT_PLATFORM_WIN
+#define __itt_metadata_str_add_with_scopeA(d,x,y,z,a) ITTNOTIFY_VOID_D4(metadata_str_add_with_scopeA,d,x,y,z,a)
+#define __itt_metadata_str_add_with_scopeA_ptr ITTNOTIFY_NAME(metadata_str_add_with_scopeA)
+#define __itt_metadata_str_add_with_scopeW(d,x,y,z,a) ITTNOTIFY_VOID_D4(metadata_str_add_with_scopeW,d,x,y,z,a)
+#define __itt_metadata_str_add_with_scopeW_ptr ITTNOTIFY_NAME(metadata_str_add_with_scopeW)
+#else /* ITT_PLATFORM==ITT_PLATFORM_WIN */
+#define __itt_metadata_str_add_with_scope(d,x,y,z,a) ITTNOTIFY_VOID_D4(metadata_str_add_with_scope,d,x,y,z,a)
+#define __itt_metadata_str_add_with_scope_ptr ITTNOTIFY_NAME(metadata_str_add_with_scope)
+#endif /* ITT_PLATFORM==ITT_PLATFORM_WIN */
+#else /* INTEL_NO_ITTNOTIFY_API */
+#if ITT_PLATFORM==ITT_PLATFORM_WIN
+#define __itt_metadata_str_add_with_scopeA(d,x,y,z,a)
+#define __itt_metadata_str_add_with_scopeA_ptr 0
+#define __itt_metadata_str_add_with_scopeW(d,x,y,z,a)
+#define __itt_metadata_str_add_with_scopeW_ptr 0
+#else /* ITT_PLATFORM==ITT_PLATFORM_WIN */
+#define __itt_metadata_str_add_with_scope(d,x,y,z,a)
+#define __itt_metadata_str_add_with_scope_ptr 0
+#endif /* ITT_PLATFORM==ITT_PLATFORM_WIN */
+#endif /* INTEL_NO_ITTNOTIFY_API */
+#else /* INTEL_NO_MACRO_BODY */
+#if ITT_PLATFORM==ITT_PLATFORM_WIN
+#define __itt_metadata_str_add_with_scopeA_ptr 0
+#define __itt_metadata_str_add_with_scopeW_ptr 0
+#else /* ITT_PLATFORM==ITT_PLATFORM_WIN */
+#define __itt_metadata_str_add_with_scope_ptr 0
+#endif /* ITT_PLATFORM==ITT_PLATFORM_WIN */
+#endif /* INTEL_NO_MACRO_BODY */
+/** @endcond */
+
+/** @} metadata group */
+
+/**
+ * @defgroup relations Relations
+ * Instances of named entities can be explicitly associated with other
+ * instances using instance IDs and the relationship API calls.
+ *
+ * @{
+ */
+
+/**
+ * @ingroup relations
+ * @brief The kind of relation between two instances is specified by the enumerated type __itt_relation.
+ * Relations between instances can be added with an API call. The relation
+ * API uses instance IDs. Relations can be added before or after the actual
+ * instances are created and persist independently of the instances. This
+ * is the motivation for having different lifetimes for instance IDs and
+ * the actual instances.
+ */
+typedef enum
+{
+ __itt_relation_is_unknown = 0,
+ __itt_relation_is_dependent_on, /**< "A is dependent on B" means that A cannot start until B completes */
+ __itt_relation_is_sibling_of, /**< "A is sibling of B" means that A and B were created as a group */
+ __itt_relation_is_parent_of, /**< "A is parent of B" means that A created B */
+ __itt_relation_is_continuation_of, /**< "A is continuation of B" means that A assumes the dependencies of B */
+ __itt_relation_is_child_of, /**< "A is child of B" means that A was created by B (inverse of is_parent_of) */
+ __itt_relation_is_continued_by, /**< "A is continued by B" means that B assumes the dependencies of A (inverse of is_continuation_of) */
+ __itt_relation_is_predecessor_to /**< "A is predecessor to B" means that B cannot start until A completes (inverse of is_dependent_on) */
+} __itt_relation;
+
+/**
+ * @ingroup relations
+ * @brief Add a relation to the current task instance.
+ * The current task instance is the head of the relation.
+ * @param[in] domain The domain controlling this call
+ * @param[in] relation The kind of relation
+ * @param[in] tail The ID for the tail of the relation
+ */
+void ITTAPI __itt_relation_add_to_current(const __itt_domain *domain, __itt_relation relation, __itt_id tail);
+
+/**
+ * @ingroup relations
+ * @brief Add a relation between two instance identifiers.
+ * @param[in] domain The domain controlling this call
+ * @param[in] head The ID for the head of the relation
+ * @param[in] relation The kind of relation
+ * @param[in] tail The ID for the tail of the relation
+ */
+void ITTAPI __itt_relation_add(const __itt_domain *domain, __itt_id head, __itt_relation relation, __itt_id tail);
+
+/** @cond exclude_from_documentation */
+#ifndef INTEL_NO_MACRO_BODY
+#ifndef INTEL_NO_ITTNOTIFY_API
+ITT_STUBV(ITTAPI, void, relation_add_to_current, (const __itt_domain *domain, __itt_relation relation, __itt_id tail))
+ITT_STUBV(ITTAPI, void, relation_add, (const __itt_domain *domain, __itt_id head, __itt_relation relation, __itt_id tail))
+#define __itt_relation_add_to_current(d,x,y) ITTNOTIFY_VOID_D2(relation_add_to_current,d,x,y)
+#define __itt_relation_add_to_current_ptr ITTNOTIFY_NAME(relation_add_to_current)
+#define __itt_relation_add(d,x,y,z) ITTNOTIFY_VOID_D3(relation_add,d,x,y,z)
+#define __itt_relation_add_ptr ITTNOTIFY_NAME(relation_add)
+#else /* INTEL_NO_ITTNOTIFY_API */
+#define __itt_relation_add_to_current(d,x,y)
+#define __itt_relation_add_to_current_ptr 0
+#define __itt_relation_add(d,x,y,z)
+#define __itt_relation_add_ptr 0
+#endif /* INTEL_NO_ITTNOTIFY_API */
+#else /* INTEL_NO_MACRO_BODY */
+#define __itt_relation_add_to_current_ptr 0
+#define __itt_relation_add_ptr 0
+#endif /* INTEL_NO_MACRO_BODY */
+/** @endcond */
+/** @} relations group */
+
+/** @cond exclude_from_documentation */
+#pragma pack(push, 8)
+
+typedef struct ___itt_clock_info
+{
+ unsigned long long clock_freq; /*!< Clock domain frequency */
+ unsigned long long clock_base; /*!< Clock domain base timestamp */
+} __itt_clock_info;
+
+#pragma pack(pop)
+/** @endcond */
+
+/** @cond exclude_from_documentation */
+typedef void (ITTAPI *__itt_get_clock_info_fn)(__itt_clock_info* clock_info, void* data);
+/** @endcond */
+
+/** @cond exclude_from_documentation */
+#pragma pack(push, 8)
+
+typedef struct ___itt_clock_domain
+{
+ __itt_clock_info info; /*!< Most recent clock domain info */
+ __itt_get_clock_info_fn fn; /*!< Callback function pointer */
+ void* fn_data; /*!< Input argument for the callback function */
+ int extra1; /*!< Reserved. Must be zero */
+ void* extra2; /*!< Reserved. Must be zero */
+ struct ___itt_clock_domain* next;
+} __itt_clock_domain;
+
+#pragma pack(pop)
+/** @endcond */
+
+/**
+ * @ingroup clockdomains
+ * @brief Create a clock domain.
+ * Certain applications require the capability to trace their application using
+ * a clock domain different than the CPU, for instance the instrumentation of events
+ * that occur on a GPU.
+ * Because the set of domains is expected to be static over the application's execution time,
+ * there is no mechanism to destroy a domain.
+ * Any domain can be accessed by any thread in the process, regardless of which thread created
+ * the domain. This call is thread-safe.
+ * @param[in] fn A pointer to a callback function which retrieves alternative CPU timestamps
+ * @param[in] fn_data Argument for a callback function; may be NULL
+ */
+__itt_clock_domain* ITTAPI __itt_clock_domain_create(__itt_get_clock_info_fn fn, void* fn_data);
+
+/** @cond exclude_from_documentation */
+#ifndef INTEL_NO_MACRO_BODY
+#ifndef INTEL_NO_ITTNOTIFY_API
+ITT_STUB(ITTAPI, __itt_clock_domain*, clock_domain_create, (__itt_get_clock_info_fn fn, void* fn_data))
+#define __itt_clock_domain_create ITTNOTIFY_DATA(clock_domain_create)
+#define __itt_clock_domain_create_ptr ITTNOTIFY_NAME(clock_domain_create)
+#else /* INTEL_NO_ITTNOTIFY_API */
+#define __itt_clock_domain_create(fn,fn_data) (__itt_clock_domain*)0
+#define __itt_clock_domain_create_ptr 0
+#endif /* INTEL_NO_ITTNOTIFY_API */
+#else /* INTEL_NO_MACRO_BODY */
+#define __itt_clock_domain_create_ptr 0
+#endif /* INTEL_NO_MACRO_BODY */
+/** @endcond */
+
+/**
+ * @ingroup clockdomains
+ * @brief Recalculate clock domains frequences and clock base timestamps.
+ */
+void ITTAPI __itt_clock_domain_reset(void);
+
+/** @cond exclude_from_documentation */
+#ifndef INTEL_NO_MACRO_BODY
+#ifndef INTEL_NO_ITTNOTIFY_API
+ITT_STUBV(ITTAPI, void, clock_domain_reset, (void))
+#define __itt_clock_domain_reset ITTNOTIFY_VOID(clock_domain_reset)
+#define __itt_clock_domain_reset_ptr ITTNOTIFY_NAME(clock_domain_reset)
+#else /* INTEL_NO_ITTNOTIFY_API */
+#define __itt_clock_domain_reset()
+#define __itt_clock_domain_reset_ptr 0
+#endif /* INTEL_NO_ITTNOTIFY_API */
+#else /* INTEL_NO_MACRO_BODY */
+#define __itt_clock_domain_reset_ptr 0
+#endif /* INTEL_NO_MACRO_BODY */
+/** @endcond */
+
+/**
+ * @ingroup clockdomain
+ * @brief Create an instance of identifier. This establishes the beginning of the lifetime of
+ * an instance of the given ID in the trace. Once this lifetime starts, the ID can be used to
+ * tag named entity instances in calls such as __itt_task_begin, and to specify relationships among
+ * identified named entity instances, using the \ref relations APIs.
+ * @param[in] domain The domain controlling the execution of this call.
+ * @param[in] clock_domain The clock domain controlling the execution of this call.
+ * @param[in] timestamp The user defined timestamp.
+ * @param[in] id The ID to create.
+ */
+void ITTAPI __itt_id_create_ex(const __itt_domain* domain, __itt_clock_domain* clock_domain, unsigned long long timestamp, __itt_id id);
+
+/**
+ * @ingroup clockdomain
+ * @brief Destroy an instance of identifier. This ends the lifetime of the current instance of the
+ * given ID value in the trace. Any relationships that are established after this lifetime ends are
+ * invalid. This call must be performed before the given ID value can be reused for a different
+ * named entity instance.
+ * @param[in] domain The domain controlling the execution of this call.
+ * @param[in] clock_domain The clock domain controlling the execution of this call.
+ * @param[in] timestamp The user defined timestamp.
+ * @param[in] id The ID to destroy.
+ */
+void ITTAPI __itt_id_destroy_ex(const __itt_domain* domain, __itt_clock_domain* clock_domain, unsigned long long timestamp, __itt_id id);
+
+/** @cond exclude_from_documentation */
+#ifndef INTEL_NO_MACRO_BODY
+#ifndef INTEL_NO_ITTNOTIFY_API
+ITT_STUBV(ITTAPI, void, id_create_ex, (const __itt_domain *domain, __itt_clock_domain* clock_domain, unsigned long long timestamp, __itt_id id))
+ITT_STUBV(ITTAPI, void, id_destroy_ex, (const __itt_domain *domain, __itt_clock_domain* clock_domain, unsigned long long timestamp, __itt_id id))
+#define __itt_id_create_ex(d,x,y,z) ITTNOTIFY_VOID_D3(id_create_ex,d,x,y,z)
+#define __itt_id_create_ex_ptr ITTNOTIFY_NAME(id_create_ex)
+#define __itt_id_destroy_ex(d,x,y,z) ITTNOTIFY_VOID_D3(id_destroy_ex,d,x,y,z)
+#define __itt_id_destroy_ex_ptr ITTNOTIFY_NAME(id_destroy_ex)
+#else /* INTEL_NO_ITTNOTIFY_API */
+#define __itt_id_create_ex(domain,clock_domain,timestamp,id)
+#define __itt_id_create_ex_ptr 0
+#define __itt_id_destroy_ex(domain,clock_domain,timestamp,id)
+#define __itt_id_destroy_ex_ptr 0
+#endif /* INTEL_NO_ITTNOTIFY_API */
+#else /* INTEL_NO_MACRO_BODY */
+#define __itt_id_create_ex_ptr 0
+#define __itt_id_destroy_ex_ptr 0
+#endif /* INTEL_NO_MACRO_BODY */
+/** @endcond */
+
+/**
+ * @ingroup clockdomain
+ * @brief Begin a task instance.
+ * @param[in] domain The domain for this task
+ * @param[in] clock_domain The clock domain controlling the execution of this call.
+ * @param[in] timestamp The user defined timestamp.
+ * @param[in] taskid The instance ID for this task instance, or __itt_null
+ * @param[in] parentid The parent instance to which this task instance belongs, or __itt_null
+ * @param[in] name The name of this task
+ */
+void ITTAPI __itt_task_begin_ex(const __itt_domain* domain, __itt_clock_domain* clock_domain, unsigned long long timestamp, __itt_id taskid, __itt_id parentid, __itt_string_handle* name);
+
+/**
+ * @ingroup clockdomain
+ * @brief Begin a task instance.
+ * @param[in] domain The domain for this task
+ * @param[in] clock_domain The clock domain controlling the execution of this call.
+ * @param[in] timestamp The user defined timestamp.
+ * @param[in] taskid The identifier for this task instance, or __itt_null
+ * @param[in] parentid The parent of this task, or __itt_null
+ * @param[in] fn The pointer to the function you are tracing
+ */
+void ITTAPI __itt_task_begin_fn_ex(const __itt_domain* domain, __itt_clock_domain* clock_domain, unsigned long long timestamp, __itt_id taskid, __itt_id parentid, void* fn);
+
+/**
+ * @ingroup clockdomain
+ * @brief End the current task instance.
+ * @param[in] domain The domain for this task
+ * @param[in] clock_domain The clock domain controlling the execution of this call.
+ * @param[in] timestamp The user defined timestamp.
+ */
+void ITTAPI __itt_task_end_ex(const __itt_domain* domain, __itt_clock_domain* clock_domain, unsigned long long timestamp);
+
+/** @cond exclude_from_documentation */
+#ifndef INTEL_NO_MACRO_BODY
+#ifndef INTEL_NO_ITTNOTIFY_API
+ITT_STUBV(ITTAPI, void, task_begin_ex, (const __itt_domain *domain, __itt_clock_domain* clock_domain, unsigned long long timestamp, __itt_id id, __itt_id parentid, __itt_string_handle *name))
+ITT_STUBV(ITTAPI, void, task_begin_fn_ex, (const __itt_domain *domain, __itt_clock_domain* clock_domain, unsigned long long timestamp, __itt_id id, __itt_id parentid, void* fn))
+ITT_STUBV(ITTAPI, void, task_end_ex, (const __itt_domain *domain, __itt_clock_domain* clock_domain, unsigned long long timestamp))
+#define __itt_task_begin_ex(d,x,y,z,a,b) ITTNOTIFY_VOID_D5(task_begin_ex,d,x,y,z,a,b)
+#define __itt_task_begin_ex_ptr ITTNOTIFY_NAME(task_begin_ex)
+#define __itt_task_begin_fn_ex(d,x,y,z,a,b) ITTNOTIFY_VOID_D5(task_begin_fn_ex,d,x,y,z,a,b)
+#define __itt_task_begin_fn_ex_ptr ITTNOTIFY_NAME(task_begin_fn_ex)
+#define __itt_task_end_ex(d,x,y) ITTNOTIFY_VOID_D2(task_end_ex,d,x,y)
+#define __itt_task_end_ex_ptr ITTNOTIFY_NAME(task_end_ex)
+#else /* INTEL_NO_ITTNOTIFY_API */
+#define __itt_task_begin_ex(domain,clock_domain,timestamp,id,parentid,name)
+#define __itt_task_begin_ex_ptr 0
+#define __itt_task_begin_fn_ex(domain,clock_domain,timestamp,id,parentid,fn)
+#define __itt_task_begin_fn_ex_ptr 0
+#define __itt_task_end_ex(domain,clock_domain,timestamp)
+#define __itt_task_end_ex_ptr 0
+#endif /* INTEL_NO_ITTNOTIFY_API */
+#else /* INTEL_NO_MACRO_BODY */
+#define __itt_task_begin_ex_ptr 0
+#define __itt_task_begin_fn_ex_ptr 0
+#define __itt_task_end_ex_ptr 0
+#endif /* INTEL_NO_MACRO_BODY */
+/** @endcond */
+
+/**
+ * @defgroup counters Counters
+ * @ingroup public
+ * Counters are user-defined objects with a monotonically increasing
+ * value. Counter values are 64-bit unsigned integers.
+ * Counters have names that can be displayed in
+ * the tools.
+ * @{
+ */
+
+/**
+ * @brief opaque structure for counter identification
+ */
+/** @cond exclude_from_documentation */
+
+typedef struct ___itt_counter* __itt_counter;
+
+/**
+ * @brief Create an unsigned 64 bits integer counter with given name/domain
+ *
+ * After __itt_counter_create() is called, __itt_counter_inc(id), __itt_counter_inc_delta(id, delta),
+ * __itt_counter_set_value(id, value_ptr) or __itt_counter_set_value_ex(id, clock_domain, timestamp, value_ptr)
+ * can be used to change the value of the counter, where value_ptr is a pointer to an unsigned 64 bits integer
+ *
+ * The call is equal to __itt_counter_create_typed(name, domain, __itt_metadata_u64)
+ */
+#if ITT_PLATFORM==ITT_PLATFORM_WIN
+__itt_counter ITTAPI __itt_counter_createA(const char *name, const char *domain);
+__itt_counter ITTAPI __itt_counter_createW(const wchar_t *name, const wchar_t *domain);
+#if defined(UNICODE) || defined(_UNICODE)
+# define __itt_counter_create __itt_counter_createW
+# define __itt_counter_create_ptr __itt_counter_createW_ptr
+#else /* UNICODE */
+# define __itt_counter_create __itt_counter_createA
+# define __itt_counter_create_ptr __itt_counter_createA_ptr
+#endif /* UNICODE */
+#else /* ITT_PLATFORM==ITT_PLATFORM_WIN */
+__itt_counter ITTAPI __itt_counter_create(const char *name, const char *domain);
+#endif /* ITT_PLATFORM==ITT_PLATFORM_WIN */
+
+#ifndef INTEL_NO_MACRO_BODY
+#ifndef INTEL_NO_ITTNOTIFY_API
+#if ITT_PLATFORM==ITT_PLATFORM_WIN
+ITT_STUB(ITTAPI, __itt_counter, counter_createA, (const char *name, const char *domain))
+ITT_STUB(ITTAPI, __itt_counter, counter_createW, (const wchar_t *name, const wchar_t *domain))
+#else /* ITT_PLATFORM==ITT_PLATFORM_WIN */
+ITT_STUB(ITTAPI, __itt_counter, counter_create, (const char *name, const char *domain))
+#endif /* ITT_PLATFORM==ITT_PLATFORM_WIN */
+#if ITT_PLATFORM==ITT_PLATFORM_WIN
+#define __itt_counter_createA ITTNOTIFY_DATA(counter_createA)
+#define __itt_counter_createA_ptr ITTNOTIFY_NAME(counter_createA)
+#define __itt_counter_createW ITTNOTIFY_DATA(counter_createW)
+#define __itt_counter_createW_ptr ITTNOTIFY_NAME(counter_createW)
+#else /* ITT_PLATFORM==ITT_PLATFORM_WIN */
+#define __itt_counter_create ITTNOTIFY_DATA(counter_create)
+#define __itt_counter_create_ptr ITTNOTIFY_NAME(counter_create)
+#endif /* ITT_PLATFORM==ITT_PLATFORM_WIN */
+#else /* INTEL_NO_ITTNOTIFY_API */
+#if ITT_PLATFORM==ITT_PLATFORM_WIN
+#define __itt_counter_createA(name, domain)
+#define __itt_counter_createA_ptr 0
+#define __itt_counter_createW(name, domain)
+#define __itt_counter_createW_ptr 0
+#else /* ITT_PLATFORM==ITT_PLATFORM_WIN */
+#define __itt_counter_create(name, domain)
+#define __itt_counter_create_ptr 0
+#endif /* ITT_PLATFORM==ITT_PLATFORM_WIN */
+#endif /* INTEL_NO_ITTNOTIFY_API */
+#else /* INTEL_NO_MACRO_BODY */
+#if ITT_PLATFORM==ITT_PLATFORM_WIN
+#define __itt_counter_createA_ptr 0
+#define __itt_counter_createW_ptr 0
+#else /* ITT_PLATFORM==ITT_PLATFORM_WIN */
+#define __itt_counter_create_ptr 0
+#endif /* ITT_PLATFORM==ITT_PLATFORM_WIN */
+#endif /* INTEL_NO_MACRO_BODY */
+/** @endcond */
+
+/**
+ * @brief Increment the unsigned 64 bits integer counter value
+ *
+ * Calling this function to non-unsigned 64 bits integer counters has no effect
+ */
+void ITTAPI __itt_counter_inc(__itt_counter id);
+
+#ifndef INTEL_NO_MACRO_BODY
+#ifndef INTEL_NO_ITTNOTIFY_API
+ITT_STUBV(ITTAPI, void, counter_inc, (__itt_counter id))
+#define __itt_counter_inc ITTNOTIFY_VOID(counter_inc)
+#define __itt_counter_inc_ptr ITTNOTIFY_NAME(counter_inc)
+#else /* INTEL_NO_ITTNOTIFY_API */
+#define __itt_counter_inc(id)
+#define __itt_counter_inc_ptr 0
+#endif /* INTEL_NO_ITTNOTIFY_API */
+#else /* INTEL_NO_MACRO_BODY */
+#define __itt_counter_inc_ptr 0
+#endif /* INTEL_NO_MACRO_BODY */
+/** @endcond */
+/**
+ * @brief Increment the unsigned 64 bits integer counter value with x
+ *
+ * Calling this function to non-unsigned 64 bits integer counters has no effect
+ */
+void ITTAPI __itt_counter_inc_delta(__itt_counter id, unsigned long long value);
+
+#ifndef INTEL_NO_MACRO_BODY
+#ifndef INTEL_NO_ITTNOTIFY_API
+ITT_STUBV(ITTAPI, void, counter_inc_delta, (__itt_counter id, unsigned long long value))
+#define __itt_counter_inc_delta ITTNOTIFY_VOID(counter_inc_delta)
+#define __itt_counter_inc_delta_ptr ITTNOTIFY_NAME(counter_inc_delta)
+#else /* INTEL_NO_ITTNOTIFY_API */
+#define __itt_counter_inc_delta(id, value)
+#define __itt_counter_inc_delta_ptr 0
+#endif /* INTEL_NO_ITTNOTIFY_API */
+#else /* INTEL_NO_MACRO_BODY */
+#define __itt_counter_inc_delta_ptr 0
+#endif /* INTEL_NO_MACRO_BODY */
+/** @endcond */
+
+/**
+ * @brief Decrement the unsigned 64 bits integer counter value
+ *
+ * Calling this function to non-unsigned 64 bits integer counters has no effect
+ */
+void ITTAPI __itt_counter_dec(__itt_counter id);
+
+#ifndef INTEL_NO_MACRO_BODY
+#ifndef INTEL_NO_ITTNOTIFY_API
+ITT_STUBV(ITTAPI, void, counter_dec, (__itt_counter id))
+#define __itt_counter_dec ITTNOTIFY_VOID(counter_dec)
+#define __itt_counter_dec_ptr ITTNOTIFY_NAME(counter_dec)
+#else /* INTEL_NO_ITTNOTIFY_API */
+#define __itt_counter_dec(id)
+#define __itt_counter_dec_ptr 0
+#endif /* INTEL_NO_ITTNOTIFY_API */
+#else /* INTEL_NO_MACRO_BODY */
+#define __itt_counter_dec_ptr 0
+#endif /* INTEL_NO_MACRO_BODY */
+/** @endcond */
+/**
+ * @brief Decrement the unsigned 64 bits integer counter value with x
+ *
+ * Calling this function to non-unsigned 64 bits integer counters has no effect
+ */
+void ITTAPI __itt_counter_dec_delta(__itt_counter id, unsigned long long value);
+
+#ifndef INTEL_NO_MACRO_BODY
+#ifndef INTEL_NO_ITTNOTIFY_API
+ITT_STUBV(ITTAPI, void, counter_dec_delta, (__itt_counter id, unsigned long long value))
+#define __itt_counter_dec_delta ITTNOTIFY_VOID(counter_dec_delta)
+#define __itt_counter_dec_delta_ptr ITTNOTIFY_NAME(counter_dec_delta)
+#else /* INTEL_NO_ITTNOTIFY_API */
+#define __itt_counter_dec_delta(id, value)
+#define __itt_counter_dec_delta_ptr 0
+#endif /* INTEL_NO_ITTNOTIFY_API */
+#else /* INTEL_NO_MACRO_BODY */
+#define __itt_counter_dec_delta_ptr 0
+#endif /* INTEL_NO_MACRO_BODY */
+/** @endcond */
+
+/**
+ * @ingroup counters
+ * @brief Increment a counter by one.
+ * The first call with a given name creates a counter by that name and sets its
+ * value to zero. Successive calls increment the counter value.
+ * @param[in] domain The domain controlling the call. Counter names are not domain specific.
+ * The domain argument is used only to enable or disable the API calls.
+ * @param[in] name The name of the counter
+ */
+void ITTAPI __itt_counter_inc_v3(const __itt_domain *domain, __itt_string_handle *name);
+
+/**
+ * @ingroup counters
+ * @brief Increment a counter by the value specified in delta.
+ * @param[in] domain The domain controlling the call. Counter names are not domain specific.
+ * The domain argument is used only to enable or disable the API calls.
+ * @param[in] name The name of the counter
+ * @param[in] delta The amount by which to increment the counter
+ */
+void ITTAPI __itt_counter_inc_delta_v3(const __itt_domain *domain, __itt_string_handle *name, unsigned long long delta);
+
+#ifndef INTEL_NO_MACRO_BODY
+#ifndef INTEL_NO_ITTNOTIFY_API
+ITT_STUBV(ITTAPI, void, counter_inc_v3, (const __itt_domain *domain, __itt_string_handle *name))
+ITT_STUBV(ITTAPI, void, counter_inc_delta_v3, (const __itt_domain *domain, __itt_string_handle *name, unsigned long long delta))
+#define __itt_counter_inc_v3(d,x) ITTNOTIFY_VOID_D1(counter_inc_v3,d,x)
+#define __itt_counter_inc_v3_ptr ITTNOTIFY_NAME(counter_inc_v3)
+#define __itt_counter_inc_delta_v3(d,x,y) ITTNOTIFY_VOID_D2(counter_inc_delta_v3,d,x,y)
+#define __itt_counter_inc_delta_v3_ptr ITTNOTIFY_NAME(counter_inc_delta_v3)
+#else /* INTEL_NO_ITTNOTIFY_API */
+#define __itt_counter_inc_v3(domain,name)
+#define __itt_counter_inc_v3_ptr 0
+#define __itt_counter_inc_delta_v3(domain,name,delta)
+#define __itt_counter_inc_delta_v3_ptr 0
+#endif /* INTEL_NO_ITTNOTIFY_API */
+#else /* INTEL_NO_MACRO_BODY */
+#define __itt_counter_inc_v3_ptr 0
+#define __itt_counter_inc_delta_v3_ptr 0
+#endif /* INTEL_NO_MACRO_BODY */
+/** @endcond */
+
+
+/**
+ * @ingroup counters
+ * @brief Decrement a counter by one.
+ * The first call with a given name creates a counter by that name and sets its
+ * value to zero. Successive calls decrement the counter value.
+ * @param[in] domain The domain controlling the call. Counter names are not domain specific.
+ * The domain argument is used only to enable or disable the API calls.
+ * @param[in] name The name of the counter
+ */
+void ITTAPI __itt_counter_dec_v3(const __itt_domain *domain, __itt_string_handle *name);
+
+/**
+ * @ingroup counters
+ * @brief Decrement a counter by the value specified in delta.
+ * @param[in] domain The domain controlling the call. Counter names are not domain specific.
+ * The domain argument is used only to enable or disable the API calls.
+ * @param[in] name The name of the counter
+ * @param[in] delta The amount by which to decrement the counter
+ */
+void ITTAPI __itt_counter_dec_delta_v3(const __itt_domain *domain, __itt_string_handle *name, unsigned long long delta);
+
+#ifndef INTEL_NO_MACRO_BODY
+#ifndef INTEL_NO_ITTNOTIFY_API
+ITT_STUBV(ITTAPI, void, counter_dec_v3, (const __itt_domain *domain, __itt_string_handle *name))
+ITT_STUBV(ITTAPI, void, counter_dec_delta_v3, (const __itt_domain *domain, __itt_string_handle *name, unsigned long long delta))
+#define __itt_counter_dec_v3(d,x) ITTNOTIFY_VOID_D1(counter_dec_v3,d,x)
+#define __itt_counter_dec_v3_ptr ITTNOTIFY_NAME(counter_dec_v3)
+#define __itt_counter_dec_delta_v3(d,x,y) ITTNOTIFY_VOID_D2(counter_dec_delta_v3,d,x,y)
+#define __itt_counter_dec_delta_v3_ptr ITTNOTIFY_NAME(counter_dec_delta_v3)
+#else /* INTEL_NO_ITTNOTIFY_API */
+#define __itt_counter_dec_v3(domain,name)
+#define __itt_counter_dec_v3_ptr 0
+#define __itt_counter_dec_delta_v3(domain,name,delta)
+#define __itt_counter_dec_delta_v3_ptr 0
+#endif /* INTEL_NO_ITTNOTIFY_API */
+#else /* INTEL_NO_MACRO_BODY */
+#define __itt_counter_dec_v3_ptr 0
+#define __itt_counter_dec_delta_v3_ptr 0
+#endif /* INTEL_NO_MACRO_BODY */
+/** @endcond */
+
+/** @} counters group */
+
+
+/**
+ * @brief Set the counter value
+ */
+void ITTAPI __itt_counter_set_value(__itt_counter id, void *value_ptr);
+
+#ifndef INTEL_NO_MACRO_BODY
+#ifndef INTEL_NO_ITTNOTIFY_API
+ITT_STUBV(ITTAPI, void, counter_set_value, (__itt_counter id, void *value_ptr))
+#define __itt_counter_set_value ITTNOTIFY_VOID(counter_set_value)
+#define __itt_counter_set_value_ptr ITTNOTIFY_NAME(counter_set_value)
+#else /* INTEL_NO_ITTNOTIFY_API */
+#define __itt_counter_set_value(id, value_ptr)
+#define __itt_counter_set_value_ptr 0
+#endif /* INTEL_NO_ITTNOTIFY_API */
+#else /* INTEL_NO_MACRO_BODY */
+#define __itt_counter_set_value_ptr 0
+#endif /* INTEL_NO_MACRO_BODY */
+/** @endcond */
+
+/**
+ * @brief Set the counter value
+ */
+void ITTAPI __itt_counter_set_value_ex(__itt_counter id, __itt_clock_domain *clock_domain, unsigned long long timestamp, void *value_ptr);
+
+/** @cond exclude_from_documentation */
+#ifndef INTEL_NO_MACRO_BODY
+#ifndef INTEL_NO_ITTNOTIFY_API
+ITT_STUBV(ITTAPI, void, counter_set_value_ex, (__itt_counter id, __itt_clock_domain *clock_domain, unsigned long long timestamp, void *value_ptr))
+#define __itt_counter_set_value_ex ITTNOTIFY_VOID(counter_set_value_ex)
+#define __itt_counter_set_value_ex_ptr ITTNOTIFY_NAME(counter_set_value_ex)
+#else /* INTEL_NO_ITTNOTIFY_API */
+#define __itt_counter_set_value_ex(id, clock_domain, timestamp, value_ptr)
+#define __itt_counter_set_value_ex_ptr 0
+#endif /* INTEL_NO_ITTNOTIFY_API */
+#else /* INTEL_NO_MACRO_BODY */
+#define __itt_counter_set_value_ex_ptr 0
+#endif /* INTEL_NO_MACRO_BODY */
+/** @endcond */
+
+/**
+ * @brief Create a typed counter with given name/domain
+ *
+ * After __itt_counter_create_typed() is called, __itt_counter_inc(id), __itt_counter_inc_delta(id, delta),
+ * __itt_counter_set_value(id, value_ptr) or __itt_counter_set_value_ex(id, clock_domain, timestamp, value_ptr)
+ * can be used to change the value of the counter
+ */
+#if ITT_PLATFORM==ITT_PLATFORM_WIN
+__itt_counter ITTAPI __itt_counter_create_typedA(const char *name, const char *domain, __itt_metadata_type type);
+__itt_counter ITTAPI __itt_counter_create_typedW(const wchar_t *name, const wchar_t *domain, __itt_metadata_type type);
+#if defined(UNICODE) || defined(_UNICODE)
+# define __itt_counter_create_typed __itt_counter_create_typedW
+# define __itt_counter_create_typed_ptr __itt_counter_create_typedW_ptr
+#else /* UNICODE */
+# define __itt_counter_create_typed __itt_counter_create_typedA
+# define __itt_counter_create_typed_ptr __itt_counter_create_typedA_ptr
+#endif /* UNICODE */
+#else /* ITT_PLATFORM==ITT_PLATFORM_WIN */
+__itt_counter ITTAPI __itt_counter_create_typed(const char *name, const char *domain, __itt_metadata_type type);
+#endif /* ITT_PLATFORM==ITT_PLATFORM_WIN */
+
+#ifndef INTEL_NO_MACRO_BODY
+#ifndef INTEL_NO_ITTNOTIFY_API
+#if ITT_PLATFORM==ITT_PLATFORM_WIN
+ITT_STUB(ITTAPI, __itt_counter, counter_create_typedA, (const char *name, const char *domain, __itt_metadata_type type))
+ITT_STUB(ITTAPI, __itt_counter, counter_create_typedW, (const wchar_t *name, const wchar_t *domain, __itt_metadata_type type))
+#else /* ITT_PLATFORM==ITT_PLATFORM_WIN */
+ITT_STUB(ITTAPI, __itt_counter, counter_create_typed, (const char *name, const char *domain, __itt_metadata_type type))
+#endif /* ITT_PLATFORM==ITT_PLATFORM_WIN */
+#if ITT_PLATFORM==ITT_PLATFORM_WIN
+#define __itt_counter_create_typedA ITTNOTIFY_DATA(counter_create_typedA)
+#define __itt_counter_create_typedA_ptr ITTNOTIFY_NAME(counter_create_typedA)
+#define __itt_counter_create_typedW ITTNOTIFY_DATA(counter_create_typedW)
+#define __itt_counter_create_typedW_ptr ITTNOTIFY_NAME(counter_create_typedW)
+#else /* ITT_PLATFORM==ITT_PLATFORM_WIN */
+#define __itt_counter_create_typed ITTNOTIFY_DATA(counter_create_typed)
+#define __itt_counter_create_typed_ptr ITTNOTIFY_NAME(counter_create_typed)
+#endif /* ITT_PLATFORM==ITT_PLATFORM_WIN */
+#else /* INTEL_NO_ITTNOTIFY_API */
+#if ITT_PLATFORM==ITT_PLATFORM_WIN
+#define __itt_counter_create_typedA(name, domain, type)
+#define __itt_counter_create_typedA_ptr 0
+#define __itt_counter_create_typedW(name, domain, type)
+#define __itt_counter_create_typedW_ptr 0
+#else /* ITT_PLATFORM==ITT_PLATFORM_WIN */
+#define __itt_counter_create_typed(name, domain, type)
+#define __itt_counter_create_typed_ptr 0
+#endif /* ITT_PLATFORM==ITT_PLATFORM_WIN */
+#endif /* INTEL_NO_ITTNOTIFY_API */
+#else /* INTEL_NO_MACRO_BODY */
+#if ITT_PLATFORM==ITT_PLATFORM_WIN
+#define __itt_counter_create_typedA_ptr 0
+#define __itt_counter_create_typedW_ptr 0
+#else /* ITT_PLATFORM==ITT_PLATFORM_WIN */
+#define __itt_counter_create_typed_ptr 0
+#endif /* ITT_PLATFORM==ITT_PLATFORM_WIN */
+#endif /* INTEL_NO_MACRO_BODY */
+/** @endcond */
+
+/**
+ * @brief Destroy the counter identified by the pointer previously returned by __itt_counter_create() or
+ * __itt_counter_create_typed()
+ */
+void ITTAPI __itt_counter_destroy(__itt_counter id);
+
+#ifndef INTEL_NO_MACRO_BODY
+#ifndef INTEL_NO_ITTNOTIFY_API
+ITT_STUBV(ITTAPI, void, counter_destroy, (__itt_counter id))
+#define __itt_counter_destroy ITTNOTIFY_VOID(counter_destroy)
+#define __itt_counter_destroy_ptr ITTNOTIFY_NAME(counter_destroy)
+#else /* INTEL_NO_ITTNOTIFY_API */
+#define __itt_counter_destroy(id)
+#define __itt_counter_destroy_ptr 0
+#endif /* INTEL_NO_ITTNOTIFY_API */
+#else /* INTEL_NO_MACRO_BODY */
+#define __itt_counter_destroy_ptr 0
+#endif /* INTEL_NO_MACRO_BODY */
+/** @endcond */
+/** @} counters group */
+
+/**
+ * @ingroup markers
+ * @brief Create a marker instance.
+ * @param[in] domain The domain for this marker
+ * @param[in] clock_domain The clock domain controlling the execution of this call.
+ * @param[in] timestamp The user defined timestamp.
+ * @param[in] id The instance ID for this marker, or __itt_null
+ * @param[in] name The name for this marker
+ * @param[in] scope The scope for this marker
+ */
+void ITTAPI __itt_marker_ex(const __itt_domain *domain, __itt_clock_domain* clock_domain, unsigned long long timestamp, __itt_id id, __itt_string_handle *name, __itt_scope scope);
+
+/** @cond exclude_from_documentation */
+#ifndef INTEL_NO_MACRO_BODY
+#ifndef INTEL_NO_ITTNOTIFY_API
+ITT_STUBV(ITTAPI, void, marker_ex, (const __itt_domain *domain, __itt_clock_domain* clock_domain, unsigned long long timestamp, __itt_id id, __itt_string_handle *name, __itt_scope scope))
+#define __itt_marker_ex(d,x,y,z,a,b) ITTNOTIFY_VOID_D5(marker_ex,d,x,y,z,a,b)
+#define __itt_marker_ex_ptr ITTNOTIFY_NAME(marker_ex)
+#else /* INTEL_NO_ITTNOTIFY_API */
+#define __itt_marker_ex(domain,clock_domain,timestamp,id,name,scope)
+#define __itt_marker_ex_ptr 0
+#endif /* INTEL_NO_ITTNOTIFY_API */
+#else /* INTEL_NO_MACRO_BODY */
+#define __itt_marker_ex_ptr 0
+#endif /* INTEL_NO_MACRO_BODY */
+/** @endcond */
+
+/**
+ * @ingroup clockdomain
+ * @brief Add a relation to the current task instance.
+ * The current task instance is the head of the relation.
+ * @param[in] domain The domain controlling this call
+ * @param[in] clock_domain The clock domain controlling the execution of this call.
+ * @param[in] timestamp The user defined timestamp.
+ * @param[in] relation The kind of relation
+ * @param[in] tail The ID for the tail of the relation
+ */
+void ITTAPI __itt_relation_add_to_current_ex(const __itt_domain *domain, __itt_clock_domain* clock_domain, unsigned long long timestamp, __itt_relation relation, __itt_id tail);
+
+/**
+ * @ingroup clockdomain
+ * @brief Add a relation between two instance identifiers.
+ * @param[in] domain The domain controlling this call
+ * @param[in] clock_domain The clock domain controlling the execution of this call.
+ * @param[in] timestamp The user defined timestamp.
+ * @param[in] head The ID for the head of the relation
+ * @param[in] relation The kind of relation
+ * @param[in] tail The ID for the tail of the relation
+ */
+void ITTAPI __itt_relation_add_ex(const __itt_domain *domain, __itt_clock_domain* clock_domain, unsigned long long timestamp, __itt_id head, __itt_relation relation, __itt_id tail);
+
+/** @cond exclude_from_documentation */
+#ifndef INTEL_NO_MACRO_BODY
+#ifndef INTEL_NO_ITTNOTIFY_API
+ITT_STUBV(ITTAPI, void, relation_add_to_current_ex, (const __itt_domain *domain, __itt_clock_domain* clock_domain, unsigned long long timestamp, __itt_relation relation, __itt_id tail))
+ITT_STUBV(ITTAPI, void, relation_add_ex, (const __itt_domain *domain, __itt_clock_domain* clock_domain, unsigned long long timestamp, __itt_id head, __itt_relation relation, __itt_id tail))
+#define __itt_relation_add_to_current_ex(d,x,y,z,a) ITTNOTIFY_VOID_D4(relation_add_to_current_ex,d,x,y,z,a)
+#define __itt_relation_add_to_current_ex_ptr ITTNOTIFY_NAME(relation_add_to_current_ex)
+#define __itt_relation_add_ex(d,x,y,z,a,b) ITTNOTIFY_VOID_D5(relation_add_ex,d,x,y,z,a,b)
+#define __itt_relation_add_ex_ptr ITTNOTIFY_NAME(relation_add_ex)
+#else /* INTEL_NO_ITTNOTIFY_API */
+#define __itt_relation_add_to_current_ex(domain,clock_domain,timestame,relation,tail)
+#define __itt_relation_add_to_current_ex_ptr 0
+#define __itt_relation_add_ex(domain,clock_domain,timestamp,head,relation,tail)
+#define __itt_relation_add_ex_ptr 0
+#endif /* INTEL_NO_ITTNOTIFY_API */
+#else /* INTEL_NO_MACRO_BODY */
+#define __itt_relation_add_to_current_ex_ptr 0
+#define __itt_relation_add_ex_ptr 0
+#endif /* INTEL_NO_MACRO_BODY */
+/** @endcond */
+
+/** @cond exclude_from_documentation */
+typedef enum ___itt_track_group_type
+{
+ __itt_track_group_type_normal = 0
+} __itt_track_group_type;
+/** @endcond */
+
+/** @cond exclude_from_documentation */
+#pragma pack(push, 8)
+
+typedef struct ___itt_track_group
+{
+ __itt_string_handle* name; /*!< Name of the track group */
+ struct ___itt_track* track; /*!< List of child tracks */
+ __itt_track_group_type tgtype; /*!< Type of the track group */
+ int extra1; /*!< Reserved. Must be zero */
+ void* extra2; /*!< Reserved. Must be zero */
+ struct ___itt_track_group* next;
+} __itt_track_group;
+
+#pragma pack(pop)
+/** @endcond */
+
+/**
+ * @brief Placeholder for custom track types. Currently, "normal" custom track
+ * is the only available track type.
+ */
+typedef enum ___itt_track_type
+{
+ __itt_track_type_normal = 0
+#ifdef INTEL_ITTNOTIFY_API_PRIVATE
+ , __itt_track_type_queue
+#endif /* INTEL_ITTNOTIFY_API_PRIVATE */
+} __itt_track_type;
+
+/** @cond exclude_from_documentation */
+#pragma pack(push, 8)
+
+typedef struct ___itt_track
+{
+ __itt_string_handle* name; /*!< Name of the track group */
+ __itt_track_group* group; /*!< Parent group to a track */
+ __itt_track_type ttype; /*!< Type of the track */
+ int extra1; /*!< Reserved. Must be zero */
+ void* extra2; /*!< Reserved. Must be zero */
+ struct ___itt_track* next;
+} __itt_track;
+
+#pragma pack(pop)
+/** @endcond */
+
+/**
+ * @brief Create logical track group.
+ */
+__itt_track_group* ITTAPI __itt_track_group_create(__itt_string_handle* name, __itt_track_group_type track_group_type);
+
+/** @cond exclude_from_documentation */
+#ifndef INTEL_NO_MACRO_BODY
+#ifndef INTEL_NO_ITTNOTIFY_API
+ITT_STUB(ITTAPI, __itt_track_group*, track_group_create, (__itt_string_handle* name, __itt_track_group_type track_group_type))
+#define __itt_track_group_create ITTNOTIFY_DATA(track_group_create)
+#define __itt_track_group_create_ptr ITTNOTIFY_NAME(track_group_create)
+#else /* INTEL_NO_ITTNOTIFY_API */
+#define __itt_track_group_create(name) (__itt_track_group*)0
+#define __itt_track_group_create_ptr 0
+#endif /* INTEL_NO_ITTNOTIFY_API */
+#else /* INTEL_NO_MACRO_BODY */
+#define __itt_track_group_create_ptr 0
+#endif /* INTEL_NO_MACRO_BODY */
+/** @endcond */
+
+/**
+ * @brief Create logical track.
+ */
+__itt_track* ITTAPI __itt_track_create(__itt_track_group* track_group, __itt_string_handle* name, __itt_track_type track_type);
+
+/** @cond exclude_from_documentation */
+#ifndef INTEL_NO_MACRO_BODY
+#ifndef INTEL_NO_ITTNOTIFY_API
+ITT_STUB(ITTAPI, __itt_track*, track_create, (__itt_track_group* track_group,__itt_string_handle* name, __itt_track_type track_type))
+#define __itt_track_create ITTNOTIFY_DATA(track_create)
+#define __itt_track_create_ptr ITTNOTIFY_NAME(track_create)
+#else /* INTEL_NO_ITTNOTIFY_API */
+#define __itt_track_create(track_group,name,track_type) (__itt_track*)0
+#define __itt_track_create_ptr 0
+#endif /* INTEL_NO_ITTNOTIFY_API */
+#else /* INTEL_NO_MACRO_BODY */
+#define __itt_track_create_ptr 0
+#endif /* INTEL_NO_MACRO_BODY */
+/** @endcond */
+
+/**
+ * @brief Set the logical track.
+ */
+void ITTAPI __itt_set_track(__itt_track* track);
+
+/** @cond exclude_from_documentation */
+#ifndef INTEL_NO_MACRO_BODY
+#ifndef INTEL_NO_ITTNOTIFY_API
+ITT_STUBV(ITTAPI, void, set_track, (__itt_track *track))
+#define __itt_set_track ITTNOTIFY_VOID(set_track)
+#define __itt_set_track_ptr ITTNOTIFY_NAME(set_track)
+#else /* INTEL_NO_ITTNOTIFY_API */
+#define __itt_set_track(track)
+#define __itt_set_track_ptr 0
+#endif /* INTEL_NO_ITTNOTIFY_API */
+#else /* INTEL_NO_MACRO_BODY */
+#define __itt_set_track_ptr 0
+#endif /* INTEL_NO_MACRO_BODY */
+/** @endcond */
+
+/* ========================================================================== */
+/** @cond exclude_from_gpa_documentation */
+/**
+ * @defgroup events Events
+ * @ingroup public
+ * Events group
+ * @{
+ */
+/** @brief user event type */
+typedef int __itt_event;
+
+/**
+ * @brief Create an event notification
+ * @note name or namelen being null/name and namelen not matching, user event feature not enabled
+ * @return non-zero event identifier upon success and __itt_err otherwise
+ */
+#if ITT_PLATFORM==ITT_PLATFORM_WIN
+__itt_event LIBITTAPI __itt_event_createA(const char *name, int namelen);
+__itt_event LIBITTAPI __itt_event_createW(const wchar_t *name, int namelen);
+#if defined(UNICODE) || defined(_UNICODE)
+# define __itt_event_create __itt_event_createW
+# define __itt_event_create_ptr __itt_event_createW_ptr
+#else
+# define __itt_event_create __itt_event_createA
+# define __itt_event_create_ptr __itt_event_createA_ptr
+#endif /* UNICODE */
+#else /* ITT_PLATFORM==ITT_PLATFORM_WIN */
+__itt_event LIBITTAPI __itt_event_create(const char *name, int namelen);
+#endif /* ITT_PLATFORM==ITT_PLATFORM_WIN */
+
+/** @cond exclude_from_documentation */
+#ifndef INTEL_NO_MACRO_BODY
+#ifndef INTEL_NO_ITTNOTIFY_API
+#if ITT_PLATFORM==ITT_PLATFORM_WIN
+ITT_STUB(LIBITTAPI, __itt_event, event_createA, (const char *name, int namelen))
+ITT_STUB(LIBITTAPI, __itt_event, event_createW, (const wchar_t *name, int namelen))
+#else /* ITT_PLATFORM==ITT_PLATFORM_WIN */
+ITT_STUB(LIBITTAPI, __itt_event, event_create, (const char *name, int namelen))
+#endif /* ITT_PLATFORM==ITT_PLATFORM_WIN */
+#if ITT_PLATFORM==ITT_PLATFORM_WIN
+#define __itt_event_createA ITTNOTIFY_DATA(event_createA)
+#define __itt_event_createA_ptr ITTNOTIFY_NAME(event_createA)
+#define __itt_event_createW ITTNOTIFY_DATA(event_createW)
+#define __itt_event_createW_ptr ITTNOTIFY_NAME(event_createW)
+#else /* ITT_PLATFORM==ITT_PLATFORM_WIN */
+#define __itt_event_create ITTNOTIFY_DATA(event_create)
+#define __itt_event_create_ptr ITTNOTIFY_NAME(event_create)
+#endif /* ITT_PLATFORM==ITT_PLATFORM_WIN */
+#else /* INTEL_NO_ITTNOTIFY_API */
+#if ITT_PLATFORM==ITT_PLATFORM_WIN
+#define __itt_event_createA(name, namelen) (__itt_event)0
+#define __itt_event_createA_ptr 0
+#define __itt_event_createW(name, namelen) (__itt_event)0
+#define __itt_event_createW_ptr 0
+#else /* ITT_PLATFORM==ITT_PLATFORM_WIN */
+#define __itt_event_create(name, namelen) (__itt_event)0
+#define __itt_event_create_ptr 0
+#endif /* ITT_PLATFORM==ITT_PLATFORM_WIN */
+#endif /* INTEL_NO_ITTNOTIFY_API */
+#else /* INTEL_NO_MACRO_BODY */
+#if ITT_PLATFORM==ITT_PLATFORM_WIN
+#define __itt_event_createA_ptr 0
+#define __itt_event_createW_ptr 0
+#else /* ITT_PLATFORM==ITT_PLATFORM_WIN */
+#define __itt_event_create_ptr 0
+#endif /* ITT_PLATFORM==ITT_PLATFORM_WIN */
+#endif /* INTEL_NO_MACRO_BODY */
+/** @endcond */
+
+/**
+ * @brief Record an event occurrence.
+ * @return __itt_err upon failure (invalid event id/user event feature not enabled)
+ */
+int LIBITTAPI __itt_event_start(__itt_event event);
+
+/** @cond exclude_from_documentation */
+#ifndef INTEL_NO_MACRO_BODY
+#ifndef INTEL_NO_ITTNOTIFY_API
+ITT_STUB(LIBITTAPI, int, event_start, (__itt_event event))
+#define __itt_event_start ITTNOTIFY_DATA(event_start)
+#define __itt_event_start_ptr ITTNOTIFY_NAME(event_start)
+#else /* INTEL_NO_ITTNOTIFY_API */
+#define __itt_event_start(event) (int)0
+#define __itt_event_start_ptr 0
+#endif /* INTEL_NO_ITTNOTIFY_API */
+#else /* INTEL_NO_MACRO_BODY */
+#define __itt_event_start_ptr 0
+#endif /* INTEL_NO_MACRO_BODY */
+/** @endcond */
+
+/**
+ * @brief Record an event end occurrence.
+ * @note It is optional if events do not have durations.
+ * @return __itt_err upon failure (invalid event id/user event feature not enabled)
+ */
+int LIBITTAPI __itt_event_end(__itt_event event);
+
+/** @cond exclude_from_documentation */
+#ifndef INTEL_NO_MACRO_BODY
+#ifndef INTEL_NO_ITTNOTIFY_API
+ITT_STUB(LIBITTAPI, int, event_end, (__itt_event event))
+#define __itt_event_end ITTNOTIFY_DATA(event_end)
+#define __itt_event_end_ptr ITTNOTIFY_NAME(event_end)
+#else /* INTEL_NO_ITTNOTIFY_API */
+#define __itt_event_end(event) (int)0
+#define __itt_event_end_ptr 0
+#endif /* INTEL_NO_ITTNOTIFY_API */
+#else /* INTEL_NO_MACRO_BODY */
+#define __itt_event_end_ptr 0
+#endif /* INTEL_NO_MACRO_BODY */
+/** @endcond */
+/** @} events group */
+
+
+/**
+ * @defgroup arrays Arrays Visualizer
+ * @ingroup public
+ * Visualize arrays
+ * @{
+ */
+
+/**
+ * @enum __itt_av_data_type
+ * @brief Defines types of arrays data (for C/C++ intrinsic types)
+ */
+typedef enum
+{
+ __itt_e_first = 0,
+ __itt_e_char = 0, /* 1-byte integer */
+ __itt_e_uchar, /* 1-byte unsigned integer */
+ __itt_e_int16, /* 2-byte integer */
+ __itt_e_uint16, /* 2-byte unsigned integer */
+ __itt_e_int32, /* 4-byte integer */
+ __itt_e_uint32, /* 4-byte unsigned integer */
+ __itt_e_int64, /* 8-byte integer */
+ __itt_e_uint64, /* 8-byte unsigned integer */
+ __itt_e_float, /* 4-byte floating */
+ __itt_e_double, /* 8-byte floating */
+ __itt_e_last = __itt_e_double
+} __itt_av_data_type;
+
+/**
+ * @brief Save an array data to a file.
+ * Output format is defined by the file extension. The csv and bmp formats are supported (bmp - for 2-dimensional array only).
+ * @param[in] data - pointer to the array data
+ * @param[in] rank - the rank of the array
+ * @param[in] dimensions - pointer to an array of integers, which specifies the array dimensions.
+ * The size of dimensions must be equal to the rank
+ * @param[in] type - the type of the array, specified as one of the __itt_av_data_type values (for intrinsic types)
+ * @param[in] filePath - the file path; the output format is defined by the file extension
+ * @param[in] columnOrder - defines how the array is stored in the linear memory.
+ * It should be 1 for column-major order (e.g. in FORTRAN) or 0 - for row-major order (e.g. in C).
+ */
+
+#if ITT_PLATFORM==ITT_PLATFORM_WIN
+int ITTAPI __itt_av_saveA(void *data, int rank, const int *dimensions, int type, const char *filePath, int columnOrder);
+int ITTAPI __itt_av_saveW(void *data, int rank, const int *dimensions, int type, const wchar_t *filePath, int columnOrder);
+#if defined(UNICODE) || defined(_UNICODE)
+# define __itt_av_save __itt_av_saveW
+# define __itt_av_save_ptr __itt_av_saveW_ptr
+#else /* UNICODE */
+# define __itt_av_save __itt_av_saveA
+# define __itt_av_save_ptr __itt_av_saveA_ptr
+#endif /* UNICODE */
+#else /* ITT_PLATFORM==ITT_PLATFORM_WIN */
+int ITTAPI __itt_av_save(void *data, int rank, const int *dimensions, int type, const char *filePath, int columnOrder);
+#endif /* ITT_PLATFORM==ITT_PLATFORM_WIN */
+
+/** @cond exclude_from_documentation */
+#ifndef INTEL_NO_MACRO_BODY
+#ifndef INTEL_NO_ITTNOTIFY_API
+#if ITT_PLATFORM==ITT_PLATFORM_WIN
+ITT_STUB(ITTAPI, int, av_saveA, (void *data, int rank, const int *dimensions, int type, const char *filePath, int columnOrder))
+ITT_STUB(ITTAPI, int, av_saveW, (void *data, int rank, const int *dimensions, int type, const wchar_t *filePath, int columnOrder))
+#else /* ITT_PLATFORM==ITT_PLATFORM_WIN */
+ITT_STUB(ITTAPI, int, av_save, (void *data, int rank, const int *dimensions, int type, const char *filePath, int columnOrder))
+#endif /* ITT_PLATFORM==ITT_PLATFORM_WIN */
+#if ITT_PLATFORM==ITT_PLATFORM_WIN
+#define __itt_av_saveA ITTNOTIFY_DATA(av_saveA)
+#define __itt_av_saveA_ptr ITTNOTIFY_NAME(av_saveA)
+#define __itt_av_saveW ITTNOTIFY_DATA(av_saveW)
+#define __itt_av_saveW_ptr ITTNOTIFY_NAME(av_saveW)
+#else /* ITT_PLATFORM==ITT_PLATFORM_WIN */
+#define __itt_av_save ITTNOTIFY_DATA(av_save)
+#define __itt_av_save_ptr ITTNOTIFY_NAME(av_save)
+#endif /* ITT_PLATFORM==ITT_PLATFORM_WIN */
+#else /* INTEL_NO_ITTNOTIFY_API */
+#if ITT_PLATFORM==ITT_PLATFORM_WIN
+#define __itt_av_saveA(name)
+#define __itt_av_saveA_ptr 0
+#define __itt_av_saveW(name)
+#define __itt_av_saveW_ptr 0
+#else /* ITT_PLATFORM==ITT_PLATFORM_WIN */
+#define __itt_av_save(name)
+#define __itt_av_save_ptr 0
+#endif /* ITT_PLATFORM==ITT_PLATFORM_WIN */
+#endif /* INTEL_NO_ITTNOTIFY_API */
+#else /* INTEL_NO_MACRO_BODY */
+#if ITT_PLATFORM==ITT_PLATFORM_WIN
+#define __itt_av_saveA_ptr 0
+#define __itt_av_saveW_ptr 0
+#else /* ITT_PLATFORM==ITT_PLATFORM_WIN */
+#define __itt_av_save_ptr 0
+#endif /* ITT_PLATFORM==ITT_PLATFORM_WIN */
+#endif /* INTEL_NO_MACRO_BODY */
+/** @endcond */
+
+void ITTAPI __itt_enable_attach(void);
+
+/** @cond exclude_from_documentation */
+#ifndef INTEL_NO_MACRO_BODY
+#ifndef INTEL_NO_ITTNOTIFY_API
+ITT_STUBV(ITTAPI, void, enable_attach, (void))
+#define __itt_enable_attach ITTNOTIFY_VOID(enable_attach)
+#define __itt_enable_attach_ptr ITTNOTIFY_NAME(enable_attach)
+#else /* INTEL_NO_ITTNOTIFY_API */
+#define __itt_enable_attach()
+#define __itt_enable_attach_ptr 0
+#endif /* INTEL_NO_ITTNOTIFY_API */
+#else /* INTEL_NO_MACRO_BODY */
+#define __itt_enable_attach_ptr 0
+#endif /* INTEL_NO_MACRO_BODY */
+/** @endcond */
+
+/** @cond exclude_from_gpa_documentation */
+
+/** @} arrays group */
+
+/** @endcond */
+
+/**
+ * @brief Module load info
+ * This API is used to report necessary information in case of module relocation
+ * @param[in] start_addr - relocated module start address
+ * @param[in] end_addr - relocated module end address
+ * @param[in] path - file system path to the module
+ */
+#if ITT_PLATFORM==ITT_PLATFORM_WIN
+void ITTAPI __itt_module_loadA(void *start_addr, void *end_addr, const char *path);
+void ITTAPI __itt_module_loadW(void *start_addr, void *end_addr, const wchar_t *path);
+#if defined(UNICODE) || defined(_UNICODE)
+# define __itt_module_load __itt_module_loadW
+# define __itt_module_load_ptr __itt_module_loadW_ptr
+#else /* UNICODE */
+# define __itt_module_load __itt_module_loadA
+# define __itt_module_load_ptr __itt_module_loadA_ptr
+#endif /* UNICODE */
+#else /* ITT_PLATFORM==ITT_PLATFORM_WIN */
+void ITTAPI __itt_module_load(void *start_addr, void *end_addr, const char *path);
+#endif /* ITT_PLATFORM==ITT_PLATFORM_WIN */
+
+/** @cond exclude_from_documentation */
+#ifndef INTEL_NO_MACRO_BODY
+#ifndef INTEL_NO_ITTNOTIFY_API
+#if ITT_PLATFORM==ITT_PLATFORM_WIN
+ITT_STUB(ITTAPI, void, module_loadA, (void *start_addr, void *end_addr, const char *path))
+ITT_STUB(ITTAPI, void, module_loadW, (void *start_addr, void *end_addr, const wchar_t *path))
+#else /* ITT_PLATFORM==ITT_PLATFORM_WIN */
+ITT_STUB(ITTAPI, void, module_load, (void *start_addr, void *end_addr, const char *path))
+#endif /* ITT_PLATFORM==ITT_PLATFORM_WIN */
+#if ITT_PLATFORM==ITT_PLATFORM_WIN
+#define __itt_module_loadA ITTNOTIFY_VOID(module_loadA)
+#define __itt_module_loadA_ptr ITTNOTIFY_NAME(module_loadA)
+#define __itt_module_loadW ITTNOTIFY_VOID(module_loadW)
+#define __itt_module_loadW_ptr ITTNOTIFY_NAME(module_loadW)
+#else /* ITT_PLATFORM==ITT_PLATFORM_WIN */
+#define __itt_module_load ITTNOTIFY_VOID(module_load)
+#define __itt_module_load_ptr ITTNOTIFY_NAME(module_load)
+#endif /* ITT_PLATFORM==ITT_PLATFORM_WIN */
+#else /* INTEL_NO_ITTNOTIFY_API */
+#if ITT_PLATFORM==ITT_PLATFORM_WIN
+#define __itt_module_loadA(start_addr, end_addr, path)
+#define __itt_module_loadA_ptr 0
+#define __itt_module_loadW(start_addr, end_addr, path)
+#define __itt_module_loadW_ptr 0
+#else /* ITT_PLATFORM==ITT_PLATFORM_WIN */
+#define __itt_module_load(start_addr, end_addr, path)
+#define __itt_module_load_ptr 0
+#endif /* ITT_PLATFORM==ITT_PLATFORM_WIN */
+#endif /* INTEL_NO_ITTNOTIFY_API */
+#else /* INTEL_NO_MACRO_BODY */
+#if ITT_PLATFORM==ITT_PLATFORM_WIN
+#define __itt_module_loadA_ptr 0
+#define __itt_module_loadW_ptr 0
+#else /* ITT_PLATFORM==ITT_PLATFORM_WIN */
+#define __itt_module_load_ptr 0
+#endif /* ITT_PLATFORM==ITT_PLATFORM_WIN */
+#endif /* INTEL_NO_MACRO_BODY */
+/** @endcond */
+
+
+
+#ifdef __cplusplus
+}
+#endif /* __cplusplus */
+
+#endif /* _ITTNOTIFY_H_ */
+
+#ifdef INTEL_ITTNOTIFY_API_PRIVATE
+
+#ifndef _ITTNOTIFY_PRIVATE_
+#define _ITTNOTIFY_PRIVATE_
+
+#ifdef __cplusplus
+extern "C" {
+#endif /* __cplusplus */
+
+/**
+ * @ingroup clockdomain
+ * @brief Begin an overlapped task instance.
+ * @param[in] domain The domain for this task
+ * @param[in] clock_domain The clock domain controlling the execution of this call.
+ * @param[in] timestamp The user defined timestamp.
+ * @param[in] taskid The identifier for this task instance, *cannot* be __itt_null.
+ * @param[in] parentid The parent of this task, or __itt_null.
+ * @param[in] name The name of this task.
+ */
+void ITTAPI __itt_task_begin_overlapped_ex(const __itt_domain* domain, __itt_clock_domain* clock_domain, unsigned long long timestamp, __itt_id taskid, __itt_id parentid, __itt_string_handle* name);
+
+/**
+ * @ingroup clockdomain
+ * @brief End an overlapped task instance.
+ * @param[in] domain The domain for this task
+ * @param[in] clock_domain The clock domain controlling the execution of this call.
+ * @param[in] timestamp The user defined timestamp.
+ * @param[in] taskid Explicit ID of finished task
+ */
+void ITTAPI __itt_task_end_overlapped_ex(const __itt_domain* domain, __itt_clock_domain* clock_domain, unsigned long long timestamp, __itt_id taskid);
+
+/** @cond exclude_from_documentation */
+#ifndef INTEL_NO_MACRO_BODY
+#ifndef INTEL_NO_ITTNOTIFY_API
+ITT_STUBV(ITTAPI, void, task_begin_overlapped_ex, (const __itt_domain* domain, __itt_clock_domain* clock_domain, unsigned long long timestamp, __itt_id taskid, __itt_id parentid, __itt_string_handle* name))
+ITT_STUBV(ITTAPI, void, task_end_overlapped_ex, (const __itt_domain* domain, __itt_clock_domain* clock_domain, unsigned long long timestamp, __itt_id taskid))
+#define __itt_task_begin_overlapped_ex(d,x,y,z,a,b) ITTNOTIFY_VOID_D5(task_begin_overlapped_ex,d,x,y,z,a,b)
+#define __itt_task_begin_overlapped_ex_ptr ITTNOTIFY_NAME(task_begin_overlapped_ex)
+#define __itt_task_end_overlapped_ex(d,x,y,z) ITTNOTIFY_VOID_D3(task_end_overlapped_ex,d,x,y,z)
+#define __itt_task_end_overlapped_ex_ptr ITTNOTIFY_NAME(task_end_overlapped_ex)
+#else /* INTEL_NO_ITTNOTIFY_API */
+#define __itt_task_begin_overlapped_ex(domain,clock_domain,timestamp,taskid,parentid,name)
+#define __itt_task_begin_overlapped_ex_ptr 0
+#define __itt_task_end_overlapped_ex(domain,clock_domain,timestamp,taskid)
+#define __itt_task_end_overlapped_ex_ptr 0
+#endif /* INTEL_NO_ITTNOTIFY_API */
+#else /* INTEL_NO_MACRO_BODY */
+#define __itt_task_begin_overlapped_ex_ptr 0
+#define __itt_task_end_overlapped_ptr 0
+#define __itt_task_end_overlapped_ex_ptr 0
+#endif /* INTEL_NO_MACRO_BODY */
+/** @endcond */
+
+/**
+ * @defgroup makrs_internal Marks
+ * @ingroup internal
+ * Marks group
+ * @warning Internal API:
+ * - It is not shipped to outside of Intel
+ * - It is delivered to internal Intel teams using e-mail or SVN access only
+ * @{
+ */
+/** @brief user mark type */
+typedef int __itt_mark_type;
+
+/**
+ * @brief Creates a user mark type with the specified name using char or Unicode string.
+ * @param[in] name - name of mark to create
+ * @return Returns a handle to the mark type
+ */
+#if ITT_PLATFORM==ITT_PLATFORM_WIN
+__itt_mark_type ITTAPI __itt_mark_createA(const char *name);
+__itt_mark_type ITTAPI __itt_mark_createW(const wchar_t *name);
+#if defined(UNICODE) || defined(_UNICODE)
+# define __itt_mark_create __itt_mark_createW
+# define __itt_mark_create_ptr __itt_mark_createW_ptr
+#else /* UNICODE */
+# define __itt_mark_create __itt_mark_createA
+# define __itt_mark_create_ptr __itt_mark_createA_ptr
+#endif /* UNICODE */
+#else /* ITT_PLATFORM==ITT_PLATFORM_WIN */
+__itt_mark_type ITTAPI __itt_mark_create(const char *name);
+#endif /* ITT_PLATFORM==ITT_PLATFORM_WIN */
+
+/** @cond exclude_from_documentation */
+#ifndef INTEL_NO_MACRO_BODY
+#ifndef INTEL_NO_ITTNOTIFY_API
+#if ITT_PLATFORM==ITT_PLATFORM_WIN
+ITT_STUB(ITTAPI, __itt_mark_type, mark_createA, (const char *name))
+ITT_STUB(ITTAPI, __itt_mark_type, mark_createW, (const wchar_t *name))
+#else /* ITT_PLATFORM==ITT_PLATFORM_WIN */
+ITT_STUB(ITTAPI, __itt_mark_type, mark_create, (const char *name))
+#endif /* ITT_PLATFORM==ITT_PLATFORM_WIN */
+#if ITT_PLATFORM==ITT_PLATFORM_WIN
+#define __itt_mark_createA ITTNOTIFY_DATA(mark_createA)
+#define __itt_mark_createA_ptr ITTNOTIFY_NAME(mark_createA)
+#define __itt_mark_createW ITTNOTIFY_DATA(mark_createW)
+#define __itt_mark_createW_ptr ITTNOTIFY_NAME(mark_createW)
+#else /* ITT_PLATFORM==ITT_PLATFORM_WIN */
+#define __itt_mark_create ITTNOTIFY_DATA(mark_create)
+#define __itt_mark_create_ptr ITTNOTIFY_NAME(mark_create)
+#endif /* ITT_PLATFORM==ITT_PLATFORM_WIN */
+#else /* INTEL_NO_ITTNOTIFY_API */
+#if ITT_PLATFORM==ITT_PLATFORM_WIN
+#define __itt_mark_createA(name) (__itt_mark_type)0
+#define __itt_mark_createA_ptr 0
+#define __itt_mark_createW(name) (__itt_mark_type)0
+#define __itt_mark_createW_ptr 0
+#else /* ITT_PLATFORM==ITT_PLATFORM_WIN */
+#define __itt_mark_create(name) (__itt_mark_type)0
+#define __itt_mark_create_ptr 0
+#endif /* ITT_PLATFORM==ITT_PLATFORM_WIN */
+#endif /* INTEL_NO_ITTNOTIFY_API */
+#else /* INTEL_NO_MACRO_BODY */
+#if ITT_PLATFORM==ITT_PLATFORM_WIN
+#define __itt_mark_createA_ptr 0
+#define __itt_mark_createW_ptr 0
+#else /* ITT_PLATFORM==ITT_PLATFORM_WIN */
+#define __itt_mark_create_ptr 0
+#endif /* ITT_PLATFORM==ITT_PLATFORM_WIN */
+#endif /* INTEL_NO_MACRO_BODY */
+/** @endcond */
+
+/**
+ * @brief Creates a "discrete" user mark type of the specified type and an optional parameter using char or Unicode string.
+ *
+ * - The mark of "discrete" type is placed to collection results in case of success. It appears in overtime view(s) as a special tick sign.
+ * - The call is "synchronous" - function returns after mark is actually added to results.
+ * - This function is useful, for example, to mark different phases of application
+ * (beginning of the next mark automatically meand end of current region).
+ * - Can be used together with "continuous" marks (see below) at the same collection session
+ * @param[in] mt - mark, created by __itt_mark_create(const char* name) function
+ * @param[in] parameter - string parameter of mark
+ * @return Returns zero value in case of success, non-zero value otherwise.
+ */
+#if ITT_PLATFORM==ITT_PLATFORM_WIN
+int ITTAPI __itt_markA(__itt_mark_type mt, const char *parameter);
+int ITTAPI __itt_markW(__itt_mark_type mt, const wchar_t *parameter);
+#if defined(UNICODE) || defined(_UNICODE)
+# define __itt_mark __itt_markW
+# define __itt_mark_ptr __itt_markW_ptr
+#else /* UNICODE */
+# define __itt_mark __itt_markA
+# define __itt_mark_ptr __itt_markA_ptr
+#endif /* UNICODE */
+#else /* ITT_PLATFORM==ITT_PLATFORM_WIN */
+int ITTAPI __itt_mark(__itt_mark_type mt, const char *parameter);
+#endif /* ITT_PLATFORM==ITT_PLATFORM_WIN */
+
+/** @cond exclude_from_documentation */
+#ifndef INTEL_NO_MACRO_BODY
+#ifndef INTEL_NO_ITTNOTIFY_API
+#if ITT_PLATFORM==ITT_PLATFORM_WIN
+ITT_STUB(ITTAPI, int, markA, (__itt_mark_type mt, const char *parameter))
+ITT_STUB(ITTAPI, int, markW, (__itt_mark_type mt, const wchar_t *parameter))
+#else /* ITT_PLATFORM==ITT_PLATFORM_WIN */
+ITT_STUB(ITTAPI, int, mark, (__itt_mark_type mt, const char *parameter))
+#endif /* ITT_PLATFORM==ITT_PLATFORM_WIN */
+#if ITT_PLATFORM==ITT_PLATFORM_WIN
+#define __itt_markA ITTNOTIFY_DATA(markA)
+#define __itt_markA_ptr ITTNOTIFY_NAME(markA)
+#define __itt_markW ITTNOTIFY_DATA(markW)
+#define __itt_markW_ptr ITTNOTIFY_NAME(markW)
+#else /* ITT_PLATFORM==ITT_PLATFORM_WIN */
+#define __itt_mark ITTNOTIFY_DATA(mark)
+#define __itt_mark_ptr ITTNOTIFY_NAME(mark)
+#endif /* ITT_PLATFORM==ITT_PLATFORM_WIN */
+#else /* INTEL_NO_ITTNOTIFY_API */
+#if ITT_PLATFORM==ITT_PLATFORM_WIN
+#define __itt_markA(mt, parameter) (int)0
+#define __itt_markA_ptr 0
+#define __itt_markW(mt, parameter) (int)0
+#define __itt_markW_ptr 0
+#else /* ITT_PLATFORM==ITT_PLATFORM_WIN */
+#define __itt_mark(mt, parameter) (int)0
+#define __itt_mark_ptr 0
+#endif /* ITT_PLATFORM==ITT_PLATFORM_WIN */
+#endif /* INTEL_NO_ITTNOTIFY_API */
+#else /* INTEL_NO_MACRO_BODY */
+#if ITT_PLATFORM==ITT_PLATFORM_WIN
+#define __itt_markA_ptr 0
+#define __itt_markW_ptr 0
+#else /* ITT_PLATFORM==ITT_PLATFORM_WIN */
+#define __itt_mark_ptr 0
+#endif /* ITT_PLATFORM==ITT_PLATFORM_WIN */
+#endif /* INTEL_NO_MACRO_BODY */
+/** @endcond */
+
+/**
+ * @brief Use this if necessary to create a "discrete" user event type (mark) for process
+ * rather then for one thread
+ * @see int __itt_mark(__itt_mark_type mt, const char* parameter);
+ */
+#if ITT_PLATFORM==ITT_PLATFORM_WIN
+int ITTAPI __itt_mark_globalA(__itt_mark_type mt, const char *parameter);
+int ITTAPI __itt_mark_globalW(__itt_mark_type mt, const wchar_t *parameter);
+#if defined(UNICODE) || defined(_UNICODE)
+# define __itt_mark_global __itt_mark_globalW
+# define __itt_mark_global_ptr __itt_mark_globalW_ptr
+#else /* UNICODE */
+# define __itt_mark_global __itt_mark_globalA
+# define __itt_mark_global_ptr __itt_mark_globalA_ptr
+#endif /* UNICODE */
+#else /* ITT_PLATFORM==ITT_PLATFORM_WIN */
+int ITTAPI __itt_mark_global(__itt_mark_type mt, const char *parameter);
+#endif /* ITT_PLATFORM==ITT_PLATFORM_WIN */
+
+/** @cond exclude_from_documentation */
+#ifndef INTEL_NO_MACRO_BODY
+#ifndef INTEL_NO_ITTNOTIFY_API
+#if ITT_PLATFORM==ITT_PLATFORM_WIN
+ITT_STUB(ITTAPI, int, mark_globalA, (__itt_mark_type mt, const char *parameter))
+ITT_STUB(ITTAPI, int, mark_globalW, (__itt_mark_type mt, const wchar_t *parameter))
+#else /* ITT_PLATFORM==ITT_PLATFORM_WIN */
+ITT_STUB(ITTAPI, int, mark_global, (__itt_mark_type mt, const char *parameter))
+#endif /* ITT_PLATFORM==ITT_PLATFORM_WIN */
+#if ITT_PLATFORM==ITT_PLATFORM_WIN
+#define __itt_mark_globalA ITTNOTIFY_DATA(mark_globalA)
+#define __itt_mark_globalA_ptr ITTNOTIFY_NAME(mark_globalA)
+#define __itt_mark_globalW ITTNOTIFY_DATA(mark_globalW)
+#define __itt_mark_globalW_ptr ITTNOTIFY_NAME(mark_globalW)
+#else /* ITT_PLATFORM==ITT_PLATFORM_WIN */
+#define __itt_mark_global ITTNOTIFY_DATA(mark_global)
+#define __itt_mark_global_ptr ITTNOTIFY_NAME(mark_global)
+#endif /* ITT_PLATFORM==ITT_PLATFORM_WIN */
+#else /* INTEL_NO_ITTNOTIFY_API */
+#if ITT_PLATFORM==ITT_PLATFORM_WIN
+#define __itt_mark_globalA(mt, parameter) (int)0
+#define __itt_mark_globalA_ptr 0
+#define __itt_mark_globalW(mt, parameter) (int)0
+#define __itt_mark_globalW_ptr 0
+#else /* ITT_PLATFORM==ITT_PLATFORM_WIN */
+#define __itt_mark_global(mt, parameter) (int)0
+#define __itt_mark_global_ptr 0
+#endif /* ITT_PLATFORM==ITT_PLATFORM_WIN */
+#endif /* INTEL_NO_ITTNOTIFY_API */
+#else /* INTEL_NO_MACRO_BODY */
+#if ITT_PLATFORM==ITT_PLATFORM_WIN
+#define __itt_mark_globalA_ptr 0
+#define __itt_mark_globalW_ptr 0
+#else /* ITT_PLATFORM==ITT_PLATFORM_WIN */
+#define __itt_mark_global_ptr 0
+#endif /* ITT_PLATFORM==ITT_PLATFORM_WIN */
+#endif /* INTEL_NO_MACRO_BODY */
+/** @endcond */
+
+/**
+ * @brief Creates an "end" point for "continuous" mark with specified name.
+ *
+ * - Returns zero value in case of success, non-zero value otherwise.
+ * Also returns non-zero value when preceding "begin" point for the
+ * mark with the same name failed to be created or not created.
+ * - The mark of "continuous" type is placed to collection results in
+ * case of success. It appears in overtime view(s) as a special tick
+ * sign (different from "discrete" mark) together with line from
+ * corresponding "begin" mark to "end" mark.
+ * @note Continuous marks can overlap and be nested inside each other.
+ * Discrete mark can be nested inside marked region
+ * @param[in] mt - mark, created by __itt_mark_create(const char* name) function
+ * @return Returns zero value in case of success, non-zero value otherwise.
+ */
+int ITTAPI __itt_mark_off(__itt_mark_type mt);
+
+/** @cond exclude_from_documentation */
+#ifndef INTEL_NO_MACRO_BODY
+#ifndef INTEL_NO_ITTNOTIFY_API
+ITT_STUB(ITTAPI, int, mark_off, (__itt_mark_type mt))
+#define __itt_mark_off ITTNOTIFY_DATA(mark_off)
+#define __itt_mark_off_ptr ITTNOTIFY_NAME(mark_off)
+#else /* INTEL_NO_ITTNOTIFY_API */
+#define __itt_mark_off(mt) (int)0
+#define __itt_mark_off_ptr 0
+#endif /* INTEL_NO_ITTNOTIFY_API */
+#else /* INTEL_NO_MACRO_BODY */
+#define __itt_mark_off_ptr 0
+#endif /* INTEL_NO_MACRO_BODY */
+/** @endcond */
+
+/**
+ * @brief Use this if necessary to create an "end" point for mark of process
+ * @see int __itt_mark_off(__itt_mark_type mt);
+ */
+int ITTAPI __itt_mark_global_off(__itt_mark_type mt);
+
+/** @cond exclude_from_documentation */
+#ifndef INTEL_NO_MACRO_BODY
+#ifndef INTEL_NO_ITTNOTIFY_API
+ITT_STUB(ITTAPI, int, mark_global_off, (__itt_mark_type mt))
+#define __itt_mark_global_off ITTNOTIFY_DATA(mark_global_off)
+#define __itt_mark_global_off_ptr ITTNOTIFY_NAME(mark_global_off)
+#else /* INTEL_NO_ITTNOTIFY_API */
+#define __itt_mark_global_off(mt) (int)0
+#define __itt_mark_global_off_ptr 0
+#endif /* INTEL_NO_ITTNOTIFY_API */
+#else /* INTEL_NO_MACRO_BODY */
+#define __itt_mark_global_off_ptr 0
+#endif /* INTEL_NO_MACRO_BODY */
+/** @endcond */
+/** @} marks group */
+
+/**
+ * @defgroup counters_internal Counters
+ * @ingroup internal
+ * Counters group
+ * @{
+ */
+
+
+/**
+ * @defgroup stitch Stack Stitching
+ * @ingroup internal
+ * Stack Stitching group
+ * @{
+ */
+/**
+ * @brief opaque structure for counter identification
+ */
+typedef struct ___itt_caller *__itt_caller;
+
+/**
+ * @brief Create the stitch point e.g. a point in call stack where other stacks should be stitched to.
+ * The function returns a unique identifier which is used to match the cut points with corresponding stitch points.
+ */
+__itt_caller ITTAPI __itt_stack_caller_create(void);
+
+/** @cond exclude_from_documentation */
+#ifndef INTEL_NO_MACRO_BODY
+#ifndef INTEL_NO_ITTNOTIFY_API
+ITT_STUB(ITTAPI, __itt_caller, stack_caller_create, (void))
+#define __itt_stack_caller_create ITTNOTIFY_DATA(stack_caller_create)
+#define __itt_stack_caller_create_ptr ITTNOTIFY_NAME(stack_caller_create)
+#else /* INTEL_NO_ITTNOTIFY_API */
+#define __itt_stack_caller_create() (__itt_caller)0
+#define __itt_stack_caller_create_ptr 0
+#endif /* INTEL_NO_ITTNOTIFY_API */
+#else /* INTEL_NO_MACRO_BODY */
+#define __itt_stack_caller_create_ptr 0
+#endif /* INTEL_NO_MACRO_BODY */
+/** @endcond */
+
+/**
+ * @brief Destroy the inforamtion about stitch point identified by the pointer previously returned by __itt_stack_caller_create()
+ */
+void ITTAPI __itt_stack_caller_destroy(__itt_caller id);
+
+/** @cond exclude_from_documentation */
+#ifndef INTEL_NO_MACRO_BODY
+#ifndef INTEL_NO_ITTNOTIFY_API
+ITT_STUBV(ITTAPI, void, stack_caller_destroy, (__itt_caller id))
+#define __itt_stack_caller_destroy ITTNOTIFY_VOID(stack_caller_destroy)
+#define __itt_stack_caller_destroy_ptr ITTNOTIFY_NAME(stack_caller_destroy)
+#else /* INTEL_NO_ITTNOTIFY_API */
+#define __itt_stack_caller_destroy(id)
+#define __itt_stack_caller_destroy_ptr 0
+#endif /* INTEL_NO_ITTNOTIFY_API */
+#else /* INTEL_NO_MACRO_BODY */
+#define __itt_stack_caller_destroy_ptr 0
+#endif /* INTEL_NO_MACRO_BODY */
+/** @endcond */
+
+/**
+ * @brief Sets the cut point. Stack from each event which occurs after this call will be cut
+ * at the same stack level the function was called and stitched to the corresponding stitch point.
+ */
+void ITTAPI __itt_stack_callee_enter(__itt_caller id);
+
+/** @cond exclude_from_documentation */
+#ifndef INTEL_NO_MACRO_BODY
+#ifndef INTEL_NO_ITTNOTIFY_API
+ITT_STUBV(ITTAPI, void, stack_callee_enter, (__itt_caller id))
+#define __itt_stack_callee_enter ITTNOTIFY_VOID(stack_callee_enter)
+#define __itt_stack_callee_enter_ptr ITTNOTIFY_NAME(stack_callee_enter)
+#else /* INTEL_NO_ITTNOTIFY_API */
+#define __itt_stack_callee_enter(id)
+#define __itt_stack_callee_enter_ptr 0
+#endif /* INTEL_NO_ITTNOTIFY_API */
+#else /* INTEL_NO_MACRO_BODY */
+#define __itt_stack_callee_enter_ptr 0
+#endif /* INTEL_NO_MACRO_BODY */
+/** @endcond */
+
+/**
+ * @brief This function eliminates the cut point which was set by latest __itt_stack_callee_enter().
+ */
+void ITTAPI __itt_stack_callee_leave(__itt_caller id);
+
+/** @cond exclude_from_documentation */
+#ifndef INTEL_NO_MACRO_BODY
+#ifndef INTEL_NO_ITTNOTIFY_API
+ITT_STUBV(ITTAPI, void, stack_callee_leave, (__itt_caller id))
+#define __itt_stack_callee_leave ITTNOTIFY_VOID(stack_callee_leave)
+#define __itt_stack_callee_leave_ptr ITTNOTIFY_NAME(stack_callee_leave)
+#else /* INTEL_NO_ITTNOTIFY_API */
+#define __itt_stack_callee_leave(id)
+#define __itt_stack_callee_leave_ptr 0
+#endif /* INTEL_NO_ITTNOTIFY_API */
+#else /* INTEL_NO_MACRO_BODY */
+#define __itt_stack_callee_leave_ptr 0
+#endif /* INTEL_NO_MACRO_BODY */
+/** @endcond */
+
+/** @} stitch group */
+
+/* ***************************************************************************************************************************** */
+
+#include <stdarg.h>
+
+/** @cond exclude_from_documentation */
+typedef enum __itt_error_code
+{
+ __itt_error_success = 0, /*!< no error */
+ __itt_error_no_module = 1, /*!< module can't be loaded */
+ /* %1$s -- library name; win: %2$d -- system error code; unx: %2$s -- system error message. */
+ __itt_error_no_symbol = 2, /*!< symbol not found */
+ /* %1$s -- library name, %2$s -- symbol name. */
+ __itt_error_unknown_group = 3, /*!< unknown group specified */
+ /* %1$s -- env var name, %2$s -- group name. */
+ __itt_error_cant_read_env = 4, /*!< GetEnvironmentVariable() failed */
+ /* %1$s -- env var name, %2$d -- system error. */
+ __itt_error_env_too_long = 5, /*!< variable value too long */
+ /* %1$s -- env var name, %2$d -- actual length of the var, %3$d -- max allowed length. */
+ __itt_error_system = 6 /*!< pthread_mutexattr_init or pthread_mutex_init failed */
+ /* %1$s -- function name, %2$d -- errno. */
+} __itt_error_code;
+
+typedef void (__itt_error_handler_t)(__itt_error_code code, va_list);
+__itt_error_handler_t* __itt_set_error_handler(__itt_error_handler_t*);
+
+const char* ITTAPI __itt_api_version(void);
+/** @endcond */
+
+/** @cond exclude_from_documentation */
+#ifndef INTEL_NO_MACRO_BODY
+#ifndef INTEL_NO_ITTNOTIFY_API
+#define __itt_error_handler ITT_JOIN(INTEL_ITTNOTIFY_PREFIX, error_handler)
+void __itt_error_handler(__itt_error_code code, va_list args);
+extern const int ITTNOTIFY_NAME(err);
+#define __itt_err ITTNOTIFY_NAME(err)
+ITT_STUB(ITTAPI, const char*, api_version, (void))
+#define __itt_api_version ITTNOTIFY_DATA(api_version)
+#define __itt_api_version_ptr ITTNOTIFY_NAME(api_version)
+#else /* INTEL_NO_ITTNOTIFY_API */
+#define __itt_api_version() (const char*)0
+#define __itt_api_version_ptr 0
+#endif /* INTEL_NO_ITTNOTIFY_API */
+#else /* INTEL_NO_MACRO_BODY */
+#define __itt_api_version_ptr 0
+#endif /* INTEL_NO_MACRO_BODY */
+/** @endcond */
+
+#ifdef __cplusplus
+}
+#endif /* __cplusplus */
+
+#endif /* _ITTNOTIFY_PRIVATE_ */
+
+#endif /* INTEL_ITTNOTIFY_API_PRIVATE */
diff --git a/tools/profiler/docs/buffer.rst b/tools/profiler/docs/buffer.rst
new file mode 100644
index 0000000000..dd7ef30dfd
--- /dev/null
+++ b/tools/profiler/docs/buffer.rst
@@ -0,0 +1,70 @@
+Buffers and Memory Management
+=============================
+
+In a post-Fission world, precise memory management across many threads and processes is
+especially important. In order for the profiler to achieve this, it uses a chunked buffer
+strategy.
+
+The `ProfileBuffer`_ is the overall buffer class that controls the memory and storage
+for the profile, it allows allocating objects into it. This can be used freely
+by things like markers and samples to store data as entries, without needing to know
+about the general strategy for how the memory is managed.
+
+The `ProfileBuffer`_ is then backed by the `ProfileChunkedBuffer`_. This specialized
+buffer grows incrementally, by allocating additional `ProfileBufferChunk`_ objects.
+More and more chunks will be allocated until a memory limit is reached, where they will
+be released. After releasing, the chunk will either be recycled or freed.
+
+The limiting of memory usage is coordinated by the `ProfilerParent`_ in the parent
+process. The `ProfilerParent`_ and `ProfilerChild`_ exchange IPC messages with information
+about how much memory is being used. When the maximum byte threshold is passed,
+the ProfileChunkManager in the parent process removes the oldest chunk, and then the
+`ProfilerParent`_ sends a `DestroyReleasedChunksAtOrBefore`_ message to all of child
+processes so that the oldest chunks in the profile are released. This helps long profiles
+to keep having data in a similar time frame.
+
+Profile Buffer Terminology
+##########################
+
+ProfilerParent
+ The main profiler machinery is installed in the parent process. It uses IPC to
+ communicate to the child processes. The PProfiler is the actor which is used
+ to communicate across processes to coordinate things. See `ProfilerParent.h`_. The
+ ProfilerParent uses the DestroyReleasedChunksAtOrBefore meessage to control the
+ overall chunk limit.
+
+ProfilerChild
+ ProfilerChild is installed in every child process, it will receive requests from
+ DestroyReleasedChunksAtOrBefore.
+
+Entry
+ This is an individual entry in the `ProfileBuffer.h`_,. These entry sizes are not
+ related to the chunks sizes. An individual entry can straddle two different chunks.
+ An entry can contain various pieces of data, like markers, samples, and stacks.
+
+Chunk
+ An arbitrary sized chunk of memory, managed by the `ProfileChunkedBuffer`_, and
+ IPC calls from the ProfilerParent.
+
+Unreleased Chunk
+ This chunk is currently being used to write entries into.
+
+Released chunk
+ This chunk is full of data. When memory limits happen, it can either be recycled
+ or freed.
+
+Recycled chunk
+ This is a chunk that was previously written into, and full. When memory limits occur,
+ rather than freeing the memory, it is re-used as the next chunk.
+
+.. _ProfileChunkedBuffer: https://searchfox.org/mozilla-central/search?q=ProfileChunkedBuffer&path=&case=true&regexp=false
+.. _ProfileChunkManager: https://searchfox.org/mozilla-central/search?q=ProfileBufferChunkManager.h&path=&case=true&regexp=false
+.. _ProfileBufferChunk: https://searchfox.org/mozilla-central/search?q=ProfileBufferChunk&path=&case=true&regexp=false
+.. _ProfileBufferChunkManagerWithLocalLimit: https://searchfox.org/mozilla-central/search?q=ProfileBufferChunkManagerWithLocalLimit&case=true&path=
+.. _ProfilerParent.h: https://searchfox.org/mozilla-central/source/tools/profiler/public/ProfilerParent.h
+.. _ProfilerChild.h: https://searchfox.org/mozilla-central/source/tools/profiler/public/ProfilerChild.h
+.. _ProfileBuffer.h: https://searchfox.org/mozilla-central/source/tools/profiler/core/ProfileBuffer.h
+.. _ProfileBuffer: https://searchfox.org/mozilla-central/search?q=ProfileBuffer&path=&case=true&regexp=false
+.. _ProfilerParent: https://searchfox.org/mozilla-central/search?q=ProfilerParent&path=&case=true&regexp=false
+.. _ProfilerChild: https://searchfox.org/mozilla-central/search?q=ProfilerChild&path=&case=true&regexp=false
+.. _DestroyReleasedChunksAtOrBefore: https://searchfox.org/mozilla-central/search?q=DestroyReleasedChunksAtOrBefore&path=&case=true&regexp=false
diff --git a/tools/profiler/docs/code-overview.rst b/tools/profiler/docs/code-overview.rst
new file mode 100644
index 0000000000..3ca662e141
--- /dev/null
+++ b/tools/profiler/docs/code-overview.rst
@@ -0,0 +1,1494 @@
+Profiler Code Overview
+######################
+
+This is an overview of the code that implements the Profiler inside Firefox
+with dome details around tricky subjects, or pointers to more detailed
+documentation and/or source code.
+
+It assumes familiarity with Firefox development, including Mercurial (hg), mach,
+moz.build files, Try, Phabricator, etc.
+
+It also assumes knowledge of the user-visible part of the Firefox Profiler, that
+is: How to use the Firefox Profiler, and what profiles contain that is shown
+when capturing a profile. See the main website https://profiler.firefox.com, and
+its `documentation <https://profiler.firefox.com/docs/>`_.
+
+For just an "overview", it may look like a huge amount of information, but the
+Profiler code is indeed quite expansive, so it takes a lot of words to explain
+even just a high-level view of it! For on-the-spot needs, it should be possible
+to search for some terms here and follow the clues. But for long-term
+maintainers, it would be worth skimming this whole document to get a grasp of
+the domain, and return to get some more detailed information before diving into
+the code.
+
+WIP note: This document should be correct at the time it is written, but the
+profiler code constantly evolves to respond to bugs or to provide new exciting
+features, so this document could become obsolete in parts! It should still be
+useful as an overview, but its correctness should be verified by looking at the
+actual code. If you notice any significant discrepancy or broken links, please
+help by
+`filing a bug <https://bugzilla.mozilla.org/enter_bug.cgi?product=Core&component=Gecko+Profiler>`_.
+
+*****
+Terms
+*****
+
+This is the common usage for some frequently-used terms, as understood by the
+Dev Tools team. But incorrect usage can sometimes happen, context is key!
+
+* **profiler** (a): Generic name for software that enables the profiling of
+ code. (`"Profiling" on Wikipedia <https://en.wikipedia.org/wiki/Profiling_(computer_programming)>`_)
+* **Profiler** (the): All parts of the profiler code inside Firefox.
+* **Base Profiler** (the): Parts of the Profiler that live in
+ mozglue/baseprofiler, and can be used from anywhere, but has limited
+ functionality.
+* **Gecko Profiler** (the): Parts of the Profiler that live in tools/profiler,
+ and can only be used from other code in the XUL library.
+* **Profilers** (the): Both the Base Profiler and the Gecko Profiler.
+* **profiling session**: This is the time during which the profiler is running
+ and collecting data.
+* **profile** (a): The output from a profiling session, either as a file, or a
+ shared viewable profile on https://profiler.firefox.com
+* **Profiler back-end** (the): Other name for the Profiler code inside Firefox,
+ to distinguish it from...
+* **Profiler front-end** (the): The website https://profiler.firefox.com that
+ displays profiles captured by the back-end.
+* **Firefox Profiler** (the): The whole suite comprised of the back-end and front-end.
+
+******************
+Guiding Principles
+******************
+
+When working on the profiler, here are some guiding principles to keep in mind:
+
+* Low profiling overhead in cpu and memory. For the Profiler to provide the best
+ value, it should stay out of the way and consume as few resources (in time and
+ memory) as possible, so as not to skew the actual Firefox code too much.
+
+* Common data structures and code should be in the Base Profiler when possible.
+
+ WIP note: Deduplication is slowly happening, see
+ `meta bug 1557566 <https://bugzilla.mozilla.org/show_bug.cgi?id=1557566>`_.
+ This document focuses on the Profiler back-end, and mainly the Gecko Profiler
+ (because this is where most of the code lives, the Base Profiler is mostly a
+ subset, originally just a cut-down version of the Gecko Profiler); so unless
+ specified, descriptions below are about the Gecko Profiler, but know that
+ there may be some equivalent code in the Base Profiler as well.
+
+* Use appropriate programming-language features where possible to reduce coding
+ errors in both our code, and our users' usage of it. In C++, this can be done
+ by using a specific class/struct types for a given usage, to avoid misuse
+ (e.g., an generic integer representing a **process** could be incorrectly
+ given to a function expecting a **thread**; we have specific types for these
+ instead, more below.)
+
+* Follow the
+ `Coding Style <https://firefox-source-docs.mozilla.org/code-quality/coding-style/index.html>`_.
+
+* Whenever possible, write tests (if not present already) for code you add or
+ modify -- but this may be too difficult in some case, use good judgement and
+ at least test manually instead.
+
+******************
+Profiler Lifecycle
+******************
+
+Here is a high-level view of the Base **or** Gecko Profiler lifecycle, as part
+of a Firefox run. The following sections will go into much more details.
+
+* Profiler initialization, preparing some common data.
+* Threads de/register themselves as they start and stop.
+* During each User/test-controlled profiling session:
+
+ * Profiler start, preparing data structures that will store the profiling data.
+ * Periodic sampling from a separate thread, happening at a user-selected
+ frequency (usually once every 1-2 ms), and recording snapshots of what
+ Firefox is doing:
+
+ * CPU sampling, measuring how much time each thread has spent actually
+ running on the CPU.
+ * Stack sampling, capturing a stack of functions calls from whichever leaf
+ function the program is in at this point in time, up to the top-most
+ caller (i.e., at least the ``main()`` function, or its callers if any).
+ Note that unlike most external profilers, the Firefox Profiler back-end
+ is capable or getting more useful information than just native functions
+ calls (compiled from C++ or Rust):
+
+ * Labels added by Firefox developers along the stack, usually to identify
+ regions of code that perform "interesting" operations (like layout, file
+ I/Os, etc.).
+ * JavaScript function calls, including the level of optimization applied.
+ * Java function calls.
+ * At any time, Markers may record more specific details of what is happening,
+ e.g.: User operations, page rendering steps, garbage collection, etc.
+ * Optional profiler pause, which stops most recording, usually near the end of
+ a session so that no data gets recorded past this point.
+ * Profile JSON output, generated from all the recorded profiling data.
+ * Profiler stop, tearing down profiling session objects.
+* Profiler shutdown.
+
+Note that the Base Profiler can start earlier, and then the data collected so
+far, as well as the responsibility for periodic sampling, is handed over to the
+Gecko Profiler:
+
+#. (Firefox starts)
+#. Base Profiler init
+#. Base Profiler start
+#. (Firefox loads the libxul library and initializes XPCOM)
+#. Gecko Profiler init
+#. Gecko Profiler start
+#. Handover from Base to Gecko
+#. Base Profiler stop
+#. (Bulk of the profiling session)
+#. JSON generation
+#. Gecko Profiler stop
+#. Gecko Profiler shutdown
+#. (Firefox ends XPCOM)
+#. Base Profiler shutdown
+#. (Firefox exits)
+
+Base Profiler functions that add data (mostly markers and labels) may be called
+from anywhere, and will be recorded by either Profiler. The corresponding
+functions in Gecko Profiler can only be called from other libxul code, and can
+only be recorded by the Gecko Profiler.
+
+Whenever possible, Gecko Profiler functions should be preferred if accessible,
+as they may provide extended functionality (e.g., better stacks with JS in
+markers). Otherwise fallback on Base Profiler functions.
+
+***********
+Directories
+***********
+
+* Non-Profiler supporting code
+
+ * `mfbt <https://searchfox.org/mozilla-central/source/mfbt>`_ - Mostly
+ replacements for C++ std library facilities.
+
+ * `mozglue/misc <https://searchfox.org/mozilla-central/source/mozglue/misc>`_
+
+ * `PlatformMutex.h <https://searchfox.org/mozilla-central/source/mozglue/misc/PlatformMutex.h>`_ -
+ Mutex base classes.
+ * `StackWalk.h <https://searchfox.org/mozilla-central/source/mozglue/misc/StackWalk.h>`_ -
+ Stack-walking functions.
+ * `TimeStamp.h <https://searchfox.org/mozilla-central/source/mozglue/misc/TimeStamp.h>`_ -
+ Timestamps and time durations.
+
+ * `xpcom <https://searchfox.org/mozilla-central/source/xpcom>`_
+
+ * `ds <https://searchfox.org/mozilla-central/source/xpcom/ds>`_ -
+ Data structures like arrays, strings.
+
+ * `threads <https://searchfox.org/mozilla-central/source/xpcom/threads>`_ -
+ Threading functions.
+
+* Profiler back-end
+
+ * `mozglue/baseprofiler <https://searchfox.org/mozilla-central/source/mozglue/baseprofiler>`_ -
+ Base Profiler code, usable from anywhere in Firefox. Because it lives in
+ mozglue, it's loaded right at the beginning, so it's possible to start the
+ profiler very early, even before Firefox loads its big&heavy "xul" library.
+
+ * `baseprofiler's public <https://searchfox.org/mozilla-central/source/mozglue/baseprofiler/public>`_ -
+ Public headers, may be #included from anywhere.
+ * `baseprofiler's core <https://searchfox.org/mozilla-central/source/mozglue/baseprofiler/core>`_ -
+ Main implementation code.
+ * `baseprofiler's lul <https://searchfox.org/mozilla-central/source/mozglue/baseprofiler/lul>`_ -
+ Special stack-walking code for Linux.
+ * `../tests/TestBaseProfiler.cpp <https://searchfox.org/mozilla-central/source/mozglue/tests/TestBaseProfiler.cpp>`_ -
+ Unit tests.
+
+ * `tools/profiler <https://searchfox.org/mozilla-central/source/tools/profiler>`_ -
+ Gecko Profiler code, only usable from the xul library. That library is
+ loaded a short time after Firefox starts, so the Gecko Profiler is not able
+ to profile the early phase of the application, Base Profiler handles that,
+ and can pass its collected data to the Gecko Profiler when the latter
+ starts.
+
+ * `public <https://searchfox.org/mozilla-central/source/tools/profiler/public>`_ -
+ Public headers, may be #included from most libxul code.
+ * `core <https://searchfox.org/mozilla-central/source/tools/profiler/core>`_ -
+ Main implementation code.
+ * `gecko <https://searchfox.org/mozilla-central/source/tools/profiler/gecko>`_ -
+ Control from JS, and multi-process/IPC code.
+ * `lul <https://searchfox.org/mozilla-central/source/tools/profiler/lul>`_ -
+ Special stack-walking code for Linux.
+ * `rust-api <https://searchfox.org/mozilla-central/source/tools/profiler/rust-api>`_,
+ `rust-helper <https://searchfox.org/mozilla-central/source/tools/profiler/rust-helper>`_
+ * `tests <https://searchfox.org/mozilla-central/source/tools/profiler/tests>`_
+
+ * `devtools/client/performance-new <https://searchfox.org/mozilla-central/source/devtools/client/performance-new>`_,
+ `devtools/shared/performance-new <https://searchfox.org/mozilla-central/source/devtools/shared/performance-new>`_ -
+ Middleware code for about:profiling and devtools panel functionality.
+
+ * js, starting with
+ `js/src/vm/GeckoProfiler.h <https://searchfox.org/mozilla-central/source/js/src/vm/GeckoProfiler.h>`_ -
+ JavaScript engine support, mostly to capture JS stacks.
+
+ * `toolkit/components/extensions/schemas/geckoProfiler.json <https://searchfox.org/mozilla-central/source/toolkit/components/extensions/schemas/geckoProfiler.json>`_ -
+ File that needs to be updated when Profiler features change.
+
+* Profiler front-end
+
+ * Out of scope for this document, but its code and bug repository can be found at:
+ https://github.com/firefox-devtools/profiler . Sometimes work needs to be
+ done on both the back-end of the front-end, especially when modifying the
+ back-end's JSON output format.
+
+*******
+Headers
+*******
+
+The most central public header is
+`GeckoProfiler.h <https://searchfox.org/mozilla-central/source/tools/profiler/public/GeckoProfiler.h>`_,
+from which almost everything else can be found, it can be a good starting point
+for exploration.
+It includes other headers, which together contain important top-level macros and
+functions.
+
+WIP note: GeckoProfiler.h used to be the header that contained everything!
+To better separate areas of functionality, and to hopefully reduce compilation
+times, parts of it have been split into smaller headers, and this work will
+continue, see `bug 1681416 <https://bugzilla.mozilla.org/show_bug.cgi?id=1681416>`_.
+
+MOZ_GECKO_PROFILER and Macros
+=============================
+
+Mozilla officially supports the Profiler on `tier-1 platforms
+<https://firefox-source-docs.mozilla.org/contributing/build/supported.html>`_:
+Windows, macos, Linux and Android.
+There is also some code running on tier 2-3 platforms (e.g., for FreeBSD), but
+the team at Mozilla is not obligated to maintain it; we do try to keep it
+running, and some external contributors are keeping an eye on it and provide
+patches when things do break.
+
+To reduce the burden on unsupported platforms, a lot of the Profilers code is
+only compiled when ``MOZ_GECKO_PROFILER`` is #defined. This means that some
+public functions may not always be declared or implemented, and should be
+surrounded by guards like ``#ifdef MOZ_GECKO_PROFILER``.
+
+Some commonly-used functions offer an empty definition in the
+non-``MOZ_GECKO_PROFILER`` case, so these functions may be called from anywhere
+without guard.
+
+Other functions have associated macros that can always be used, and resolve to
+nothing on unsupported platforms. E.g.,
+``PROFILER_REGISTER_THREAD`` calls ``profiler_register_thread`` where supported,
+otherwise does nothing.
+
+WIP note: There is an effort to eventually get rid of ``MOZ_GECKO_PROFILER`` and
+its associated macros, see
+`bug 1635350 <https://bugzilla.mozilla.org/show_bug.cgi?id=1635350>`_.
+
+RAII "Auto" macros and classes
+==============================
+A number of functions are intended to be called in pairs, usually to start and
+then end some operation. To ease their use, and ensure that both functions are
+always called together, they usually have an associated class and/or macro that
+may be called only once. This pattern of using an object's destructor to ensure
+that some action always eventually happens, is called
+`RAII <https://en.cppreference.com/w/cpp/language/raii>`_ in C++, with the
+common prefix "auto".
+
+E.g.: In ``MOZ_GECKO_PROFILER`` builds,
+`AUTO_PROFILER_INIT <https://searchfox.org/mozilla-central/search?q=AUTO_PROFILER_INIT>`_
+instantiates an
+`AutoProfilerInit <https://searchfox.org/mozilla-central/search?q=symbol:T_mozilla%3A%3AAutoProfilerInit>`_
+object, which calls ``profiler_init`` when constructed, and
+``profiler_shutdown`` when destroyed.
+
+*********************
+Platform Abstractions
+*********************
+
+This section describes some platform abstractions that are used throughout the
+Profilers. (Other platform abstractions will be described where they are used.)
+
+Process and Thread IDs
+======================
+
+The Profiler back-end often uses process and thread IDs (aka "pid" and "tid"),
+which are commonly just a number.
+For better code correctness, and to hide specific platform details, they are
+encapsulated in opaque types
+`BaseProfilerProcessId <https://searchfox.org/mozilla-central/search?q=BaseProfilerProcessId>`_
+and
+`BaseProfilerThreadId <https://searchfox.org/mozilla-central/search?q=BaseProfilerThreadId>`_.
+These types should be used wherever possible.
+When interfacing with other code, they may be converted using the member
+functions ``FromNumber`` and ``ToNumber``.
+
+To find the current process or thread ID, use
+`profiler_current_process_id <https://searchfox.org/mozilla-central/search?q=profiler_current_process_id>`_
+or
+`profiler_current_thread_id <https://searchfox.org/mozilla-central/search?q=profiler_current_thread_id>`_.
+
+The main thread ID is available through
+`profiler_main_thread_id <https://searchfox.org/mozilla-central/search?q=profiler_main_thread_id>`_
+(assuming
+`profiler_init_main_thread_id <https://searchfox.org/mozilla-central/search?q=profiler_init_main_thread_id>`_
+was called when the application started -- especially important in stand-alone
+test programs.)
+And
+`profiler_is_main_thread <https://searchfox.org/mozilla-central/search?q=profiler_is_main_thread>`_
+is a quick way to find out if the current thread is the main thread.
+
+Locking
+=======
+The locking primitives in PlatformMutex.h are not supposed to be used as-is, but
+through a user-accessible implementation. For the Profilers, this is in
+`BaseProfilerDetail.h <https://searchfox.org/mozilla-central/source/mozglue/baseprofiler/public/BaseProfilerDetail.h>`_.
+
+In addition to the usual ``Lock``, ``TryLock``, and ``Unlock`` functions,
+`BaseProfilerMutex <https://searchfox.org/mozilla-central/search?q=BaseProfilerMutex>`_
+objects have a name (which may be helpful when debugging),
+they record the thread on which they are locked (making it possible to know if
+the mutex is locked on the current thread), and in ``DEBUG`` builds there are
+assertions verifying that the mutex is not incorrectly used recursively, to
+verify the correct ordering of different Profiler mutexes, and that it is
+unlocked before destruction.
+
+Mutexes should preferably be locked within C++ block scopes, or as class
+members, by using
+`BaseProfilerAutoLock <https://searchfox.org/mozilla-central/search?q=BaseProfilerAutoLock>`_.
+
+Some classes give the option to use a mutex or not (so that single-threaded code
+can more efficiently bypass locking operations), for these we have
+`BaseProfilerMaybeMutex <https://searchfox.org/mozilla-central/search?q=BaseProfilerMaybeMutex>`_
+and
+`BaseProfilerMaybeAutoLock <https://searchfox.org/mozilla-central/search?q=BaseProfilerMaybeAutoLock>`_.
+
+There is also a special type of shared lock (aka RWLock, see
+`RWLock on wikipedia <https://en.wikipedia.org/wiki/Readers%E2%80%93writer_lock>`_),
+which may be locked in multiple threads (through ``LockShared`` or preferably
+`BaseProfilerAutoLockShared <https://searchfox.org/mozilla-central/search?q=BaseProfilerAutoLockShared>`_),
+or locked exclusively, preventing any other locking (through ``LockExclusive`` or preferably
+`BaseProfilerAutoLockExclusive <https://searchfox.org/mozilla-central/search?q=BaseProfilerAutoLockExclusive>`_).
+
+*********************
+Main Profiler Classes
+*********************
+
+Diagram showing the most important Profiler classes, see details in the
+following sections:
+
+(As noted, the "RegisteredThread" classes are now obsolete in the Gecko
+Profiler, see the "Thread Registration" section below for an updated diagram and
+description.)
+
+.. image:: profilerclasses-20220913.png
+
+***********************
+Profiler Initialization
+***********************
+
+`profiler_init <https://searchfox.org/mozilla-central/search?q=symbol:_Z13profiler_initPv>`_
+and
+`baseprofiler::profiler_init <https://searchfox.org/mozilla-central/search?q=symbol:_ZN7mozilla12baseprofiler13profiler_initEPv>`_
+must be called from the main thread, and are used to prepare important aspects
+of the profiler, including:
+
+* Making sure the main thread ID is recorded.
+* Handling ``MOZ_PROFILER_HELP=1 ./mach run`` to display the command-line help.
+* Creating the ``CorePS`` instance -- more details below.
+* Registering the main thread.
+* Initializing some platform-specific code.
+* Handling other environment variables that are used to immediately start the
+ profiler, with optional settings provided in other env-vars.
+
+CorePS
+======
+
+The `CorePS class <https://searchfox.org/mozilla-central/search?q=symbol:T_CorePS>`_
+has a single instance that should live for the duration of the Firefox
+application, and contains important information that could be needed even when
+the Profiler is not running.
+
+It includes:
+
+* A static pointer to its single instance.
+* The process start time.
+* JavaScript-specific data structures.
+* A list of registered
+ `PageInformations <https://searchfox.org/mozilla-central/search?q=symbol:T_PageInformation>`_,
+ used to keep track of the tabs that this process handles.
+* A list of
+ `BaseProfilerCounts <https://searchfox.org/mozilla-central/search?q=symbol:T_BaseProfilerCount>`_,
+ used to record things like the process memory usage.
+* The process name, and optionally the "eTLD+1" (roughly sub-domain) that this
+ process handles.
+* In the Base Profiler only, a list of
+ `RegisteredThreads <https://searchfox.org/mozilla-central/search?q=symbol:T_mozilla%253A%253Abaseprofiler%253A%253ARegisteredThread>`_.
+ WIP note: This storage has been reworked in the Gecko Profiler (more below),
+ and in practice the Base Profiler only registers the main thread. This should
+ eventually disappear as part of the de-duplication work
+ (`bug 1557566 <https://bugzilla.mozilla.org/show_bug.cgi?id=1557566>`_).
+
+*******************
+Thread Registration
+*******************
+
+Threads need to register themselves in order to get fully profiled.
+This section describes the main data structures that record the list of
+registered threads and their data.
+
+WIP note: There is some work happening to add limited profiling of unregistered
+threads, with the hope that more and more functionality could be added to
+eventually use the same registration data structures.
+
+Diagram showing the relevant classes, see details in the following sub-sections:
+
+.. image:: profilerthreadregistration-20220913.png
+
+ProfilerThreadRegistry
+======================
+
+The
+`static ProfilerThreadRegistry object <https://searchfox.org/mozilla-central/search?q=symbol:T_mozilla%3A%3Aprofiler%3A%3AThreadRegistry>`_
+contains a list of ``OffThreadRef`` objects.
+
+Each ``OffThreadRef`` points to a ``ProfilerThreadRegistration``, and restricts
+access to a safe subset of the thread data, and forces a mutex lock if necessary
+(more information under ProfilerThreadRegistrationData below).
+
+ProfilerThreadRegistration
+==========================
+
+A
+`ProfilerThreadRegistration object <https://searchfox.org/mozilla-central/search?q=symbol:T_mozilla%3A%3Aprofiler%3A%3AThreadRegistration>`_
+contains a lot of information relevant to its thread, to help with profiling it.
+
+This data is accessible from the thread itself through an ``OnThreadRef``
+object, which points to the ``ThreadRegistration``, and restricts access to a
+safe subset of thread data, and forces a mutex lock if necessary (more
+information under ProfilerThreadRegistrationData below).
+
+ThreadRegistrationData and accessors
+====================================
+
+`The ProfilerThreadRegistrationData.h header <https://searchfox.org/mozilla-central/source/tools/profiler/public/ProfilerThreadRegistrationData.h>`_
+contains a hierarchy of classes that encapsulate all the thread-related data.
+
+``ThreadRegistrationData`` contains all the actual data members, including:
+
+* Some long-lived
+ `ThreadRegistrationInfo <https://searchfox.org/mozilla-central/search?q=symbol:T_mozilla%253A%253Aprofiler%253A%253AThreadRegistrationInfo>`_,
+ containing the thread name, its registration time, the thread ID, and whether
+ it's the main thread.
+* A ``ProfilingStack`` that gathers developer-provided pseudo-frames, and JS
+ frames.
+* Some platform-specific ``PlatformData`` (usually required to actually record
+ profiling measurements for that thread).
+* A pointer to the top of the stack.
+* A shared pointer to the thread's ``nsIThread``.
+* A pointer to the ``JSContext``.
+* An optional pre-allocated ``JsFrame`` buffer used during stack-sampling.
+* Some JS flags.
+* Sleep-related data (to avoid costly sampling while the thread is known to not
+ be doing anything).
+* The current ``ThreadProfilingFeatures``, to know what kind of data to record.
+* When profiling, a pointer to a ``ProfiledThreadData``, which contains some
+ more data needed during and just after profiling.
+
+As described in their respective code comments, each data member is supposed to
+be accessed in certain ways, e.g., the ``JSContext`` should only be "written
+from thread, read from thread and suspended thread". To enforce these rules,
+data members can only be accessed through certain classes, which themselves can
+only be instantiated in the correct conditions.
+
+The accessor classes are, from base to most-derived:
+
+* ``ThreadRegistrationData``, not an accessor itself, but it's the base class
+ with all the ``protected`` data.
+* ``ThreadRegistrationUnlockedConstReader``, giving unlocked ``const`` access to
+ the ``ThreadRegistrationInfo``, ``PlatformData``, and stack top.
+* ``ThreadRegistrationUnlockedConstReaderAndAtomicRW``, giving unlocked
+ access to the atomic data members: ``ProfilingStack``, sleep-related data,
+ ``ThreadProfilingFeatures``.
+* ``ThreadRegistrationUnlockedRWForLockedProfiler``, giving access that's
+ protected by the Profiler's main lock, but doesn't require a
+ ``ThreadRegistration`` lock, to the ``ProfiledThreadData``
+* ``ThreadRegistrationUnlockedReaderAndAtomicRWOnThread``, giving unlocked
+ mutable access, but only on the thread itself, to the ``JSContext``.
+* ``ThreadRegistrationLockedRWFromAnyThread``, giving locked access from any
+ thread to mutex-protected data: ``ThreadProfilingFeatures``, ``JsFrame``,
+ ``nsIThread``, and the JS flags.
+* ``ThreadRegistrationLockedRWOnThread``, giving locked access, but only from
+ the thread itself, to the ``JSContext`` and a JS flag-related operation.
+* ``ThreadRegistration::EmbeddedData``, containing all of the above, and stored
+ as a data member in each ``ThreadRegistration``.
+
+To recapitulate, if some code needs some data on the thread, it can use
+``ThreadRegistration`` functions to request access (with the required rights,
+like a mutex lock).
+To access data about another thread, use similar functions from
+``ThreadRegistry`` instead.
+You may find some examples in the implementations of the functions in
+ProfilerThreadState.h (see the following section).
+
+ProfilerThreadState.h functions
+===============================
+
+The
+`ProfilerThreadState.h <https://searchfox.org/mozilla-central/source/tools/profiler/public/ProfilerThreadState.h>`_
+header provides a few helpful functions related to threads, including:
+
+* ``profiler_is_active_and_thread_is_registered``
+* ``profiler_thread_is_being_profiled`` (for the current thread or another
+ thread, and for a given set of features)
+* ``profiler_thread_is_sleeping``
+
+**************
+Profiler Start
+**************
+
+There are multiple ways to start the profiler, through command line env-vars,
+and programmatically in C++ and JS.
+
+The main public C++ function is
+`profiler_start <https://searchfox.org/mozilla-central/search?q=symbol:_Z14profiler_startN7mozilla10PowerOfTwoIjEEdjPPKcjyRKNS_5MaybeIdEE%2C_Z14profiler_startN7mozilla10PowerOfTwoIjEEdjPPKcjmRKNS_5MaybeIdEE>`_.
+It takes all the features specifications, and returns a promise that gets
+resolved when the Profiler has fully started in all processes (multi-process
+profiling is described later in this document, for now the focus will be on each
+process running its instance of the Profiler). It first calls ``profiler_init``
+if needed, and also ``profiler_stop`` if the profiler was already running.
+
+The main implementation, which can be called from multiple sources, is
+`locked_profiler_start <https://searchfox.org/mozilla-central/search?q=locked_profiler_start>`_.
+It performs a number of operations to start the profiling session, including:
+
+* Record the session start time.
+* Pre-allocate some work buffer to capture stacks for markers on the main thread.
+* In the Gecko Profiler only: If the Base Profiler was running, take ownership
+ of the data collected so far, and stop the Base Profiler (we don't want both
+ trying to collect the same data at the same time!)
+* Create the ActivePS, which keeps track of most of the profiling session
+ information, more about it below.
+* For each registered thread found in the ``ThreadRegistry``, check if it's one
+ of the threads to profile, and if yes set the appropriate data into the
+ corresponding ``ThreadRegistrationData`` (including informing the JS engine to
+ start recording profiling data).
+* On Android, start the Java sampler.
+* If native allocations are to be profiled, setup the appropriate hooks.
+* Start the audio callback tracing if requested.
+* Set the public shared "active" state, used by many functions to quickly assess
+ whether to actually record profiling data.
+
+ActivePS
+========
+
+The `ActivePS class <https://searchfox.org/mozilla-central/search?q=symbol:T_ActivePS>`_
+has a single instance at a time, that should live for the length of the
+profiling session.
+
+It includes:
+
+* The session start time.
+* A way to track "generations" (in case an old ActivePS still lives when the
+ next one starts, so that in-flight data goes to the correct place.)
+* Requested features: Buffer capacity, periodic sampling interval, feature set,
+ list of threads to profile, optional: specific tab to profile.
+* The profile data storage buffer and its chunk manager (see "Storage" section
+ below for details.)
+* More data about live and dead profiled threads.
+* Optional counters for per-process CPU usage, and power usage.
+* A pointer to the ``SamplerThread`` object (see "Periodic Sampling" section
+ below for details.)
+
+*******
+Storage
+*******
+
+During a session, the profiling data is serialized into a buffer, which is made
+of "chunks", each of which contains "blocks", which have a size and the "entry"
+data.
+
+During a profiling session, there is one main profile buffer, which may be
+started by the Base Profiler, and then handed over to the Gecko Profiler when
+the latter starts.
+
+The buffer is divided in chunks of equal size, which are allocated before they
+are needed. When the data reaches a user-set limit, the oldest chunk is
+recycled. This means that for long-enough profiling sessions, only the most
+recent data (that could fit under the limit) is kept.
+
+Each chunk stores a sequence of blocks of variable length. The chunk itself
+only knows where the first full block starts, and where the last block ends,
+which is where the next block will be reserved.
+
+To add an entry to the buffer, a block is reserved, the size is written first
+(so that readers can find the start of the next block), and then the entry bytes
+are written.
+
+The following sessions give more technical details.
+
+leb128iterator.h
+================
+
+`This utility header <https://searchfox.org/mozilla-central/source/mozglue/baseprofiler/public/leb128iterator.h>`_
+contains some functions to read and write unsigned "LEB128" numbers
+(`LEB128 on wikipedia <https://en.wikipedia.org/wiki/LEB128>`_).
+
+They are an efficient way to serialize numbers that are usually small, e.g.,
+numbers up to 127 only take one byte, two bytes up to 16,383, etc.
+
+ProfileBufferBlockIndex
+=======================
+
+`A ProfileBufferBlockIndex object <https://searchfox.org/mozilla-central/search?q=symbol:T_mozilla%3A%3AProfileBufferBlockIndex>`_
+encapsulates a block index that is known to be the valid start of a block. It is
+created when a block is reserved, or when trusted code computes the start of a
+block in a chunk.
+
+The more generic
+`ProfileBufferIndex <https://searchfox.org/mozilla-central/search?q=symbol:T_mozilla%3A%3AProfileBufferIndex>`_
+type is used when working inside blocks.
+
+ProfileBufferChunk
+==================
+
+`A ProfileBufferChunk <https://searchfox.org/mozilla-central/search?q=symbol:T_mozilla%3A%3AProfileBufferChunk>`_
+is a variable-sized object. It contains:
+
+* A public copyable header, itself containing:
+
+ * The local offset to the first full block (a chunk may start with the end of
+ a block that was started at the end of the previous chunk). That offset in
+ the very first chunk is the natural start to read all the data in the
+ buffer.
+ * The local offset past the last reserved block. This is where the next block
+ should be reserved, unless it points past the end of this chunk size.
+ * The timestamp when the chunk was first used.
+ * The timestamp when the chunk became full.
+ * The number of bytes that may be stored in this chunk.
+ * The number of reserved blocks.
+ * The global index where this chunk starts.
+ * The process ID writing into this chunk.
+
+* An owning unique pointer to the next chunk. It may be null for the last chunk
+ in a chain.
+
+* In ``DEBUG`` builds, a state variable, which is used to ensure that the chunk
+ goes through a known sequence of states (e.g., Created, then InUse, then
+ Done, etc.) See the sequence diagram
+ `where the member variable is defined <https://searchfox.org/mozilla-central/search?q=symbol:F_%3CT_mozilla%3A%3AProfileBufferChunk%3A%3AInternalHeader%3E_mState>`_.
+
+* The actual buffer data.
+
+Because a ProfileBufferChunk is variable-size, it must be created through its
+static ``Create`` function, which takes care of allocating the correct amount
+of bytes, at the correct alignment.
+
+Chunk Managers
+==============
+
+ProfilerBufferChunkManager
+--------------------------
+
+`The ProfileBufferChunkManager abstract class <https://searchfox.org/mozilla-central/search?q=symbol:T_mozilla%3A%3AProfileBufferChunkManager>`_
+defines the interface of classes that manage chunks.
+
+Concrete implementations are responsible for:
+* Creating chunks for their user, with a mechanism to pre-allocate chunks before they are actually needed.
+* Taking back and owning chunks when they are "released" (usually when full).
+* Automatically destroying or recycling the oldest released chunks.
+* Giving temporary access to extant released chunks.
+
+ProfileBufferChunkManagerSingle
+-------------------------------
+
+`A ProfileBufferChunkManagerSingle object <https://searchfox.org/mozilla-central/search?q=symbol:T_mozilla%3A%3AProfileBufferChunkManagerSingle>`_
+manages a single chunk.
+
+That chunk is always the same, it is never destroyed. The user may use it and
+optionally release it. The manager can then be reset, and that one chunk will
+be available again for use.
+
+A request for a second chunk would always fail.
+
+This manager is short-lived and not thread-safe. It is useful when there is some
+limited data that needs to be captured without blocking the global profiling
+buffer, usually one stack sample. This data may then be extracted and quickly
+added to the global buffer.
+
+ProfileBufferChunkManagerWithLocalLimit
+---------------------------------------
+
+`A ProfileBufferChunkManagerWithLocalLimit object <https://searchfox.org/mozilla-central/search?q=symbol:T_mozilla%3A%3AProfileBufferChunkManagerSingle>`_
+implements the ``ProfileBufferChunkManager`` interface fully, managing a number
+of chunks, and making sure their total combined size stays under a given limit.
+This is the main chunk manager user during a profiling session.
+
+Note: It also implements the ``ProfileBufferControlledChunkManager`` interface,
+this is explained in the later section "Multi-Process Profiling".
+
+It is thread-safe, and one instance is shared by both Profilers.
+
+ProfileChunkedBuffer
+====================
+
+`A ProfileChunkedBuffer object <https://searchfox.org/mozilla-central/search?q=symbol:T_mozilla%3A%3AProfileChunkedBuffer>`_
+uses a ``ProfilerBufferChunkManager`` to store data, and handles the different
+C++ types of data that the Profilers want to read/write as entries in buffer
+chunks.
+
+Its main function is ``ReserveAndPut``:
+
+* It takes an invocable object (like a lambda) that should return the size of
+ the entry to store, this is to potentially avoid costly operations just to
+ compute a size, when the profiler may not be running.
+* It attempts to reserve the space in its chunks, requesting a new chunk if
+ necessary.
+* It then calls a provided invocable object with a
+ `ProfileBufferEntryWriter <https://searchfox.org/mozilla-central/search?q=symbol:T_mozilla%3A%3AProfileBufferEntryWriter>`_,
+ which offers a range of functions to help serialize C++ objects. The
+ de/serialization functions are found in specializations of
+ `ProfileBufferEntryWriter::Serializer <https://searchfox.org/mozilla-central/search?q=symbol:T_mozilla%3A%3AProfileBufferEntryWriter%3A%3ASerializer>`_
+ and
+ `ProfileBufferEntryReader::Deserializer <https://searchfox.org/mozilla-central/search?q=symbol:T_mozilla%3A%3AProfileBufferEntryReader%3A%3ADeserializer>`_.
+
+More "put" functions use ``ReserveAndPut`` to more easily serialize blocks of
+memory, or C++ objects.
+
+``ProfileChunkedBuffer`` is optionally thread-safe, using a
+``BaseProfilerMaybeMutex``.
+
+WIP note: Using a mutex makes this storage too noisy for profiling some
+real-time (like audio processing).
+`Bug 1697953 <https://bugzilla.mozilla.org/show_bug.cgi?id=1697953>`_ will look
+at switching to using atomic variables instead.
+An alternative would be to use a totally separate non-thread-safe buffers for
+each real-time thread that requires it (see
+`bug 1754889 <https://bugzilla.mozilla.org/show_bug.cgi?id=1754889>`_).
+
+ProfileBuffer
+=============
+
+`A ProfileBuffer object <https://searchfox.org/mozilla-central/search?q=symbol:T_ProfileBuffer>`_
+uses a ``ProfileChunkedBuffer`` to store data, and handles the different kinds
+of entries that the Profilers want to read/write.
+
+Each entry starts with a tag identifying a kind. These kinds can be found in
+`ProfileBufferEntryKinds.h <https://searchfox.org/mozilla-central/source/mozglue/baseprofiler/public/ProfileBufferEntryKinds.h>`_.
+
+There are "legacy" kinds, which are small fixed-length entries, such as:
+Categories, labels, frame information, counters, etc. These can be stored in
+`ProfileBufferEntry objects <https://searchfox.org/mozilla-central/search?q=symbol:T_ProfileBufferEntry>`_
+
+And there are "modern" kinds, which have variable sizes, such as: Markers, CPU
+running times, full stacks, etc. These are more directly handled by code that
+can access the underlying ``ProfileChunkedBuffer``.
+
+The other major responsibility of a ``ProfileChunkedBuffer`` is to read back all
+this data, sometimes during profiling (e.g., to duplicate a stack), but mainly
+at the end of a session when generating the output JSON profile.
+
+*****************
+Periodic Sampling
+*****************
+
+Probably the most important job of the Profiler is to sample stacks of a number
+of running threads, to help developers know which functions get used a lot when
+performing some operation on Firefox.
+
+This is accomplished from a special thread, which regularly springs into action
+and captures all this data.
+
+SamplerThread
+=============
+
+`The SamplerThread object <https://searchfox.org/mozilla-central/search?q=symbol:T_SamplerThread>`_
+manages the information needed during sampling. It is created when the profiler
+starts, and is stored inside the ``ActivePS``, see above for details.
+
+It includes:
+
+* A ``Sampler`` object that contains platform-specific details, which are
+ implemented in separate files like platform-win32.cpp, etc.
+* The same generation index as its owning ``ActivePS``.
+* The requested interval between samples.
+* A handle to the thread where the sampling happens, its main function is
+ `Run() function <https://searchfox.org/mozilla-central/search?q=symbol:_ZN13SamplerThread3RunEv>`_.
+* A list of callbacks to invoke after the next sampling. These may be used by
+ tests to wait for sampling to actually happen.
+* The unregistered-thread-spy data, and an optional handle on another thread
+ that takes care of "spying" on unregistered thread (on platforms where that
+ operation is too expensive to run directly on the sampling thread).
+
+The ``Run()`` function takes care of performing the periodic sampling work:
+(more details in the following sections)
+
+* Retrieve the sampling parameters.
+* Instantiate a ``ProfileBuffer`` on the stack, to capture samples from other threads.
+* Loop until a ``break``:
+
+ * Lock the main profiler mutex, and do:
+
+ * Check if sampling should stop, and break from the loop.
+ * Clean-up exit profiles (these are profiles sent from dying sub-processes,
+ and are kept for as long as they overlap with this process' own buffer range).
+ * Record the CPU utilization of the whole process.
+ * Record the power consumption.
+ * Sample each registered counter, including the memory counter.
+ * For each registered thread to be profiled:
+
+ * Record the CPU utilization.
+ * If the thread is marked as "still sleeping", record a "same as before"
+ sample, otherwise suspend the thread and take a full stack sample.
+ * On some threads, record the event delay to compute the
+ (un)responsiveness. WIP note: This implementation may change.
+
+ * Record profiling overhead durations.
+
+ * Unlock the main profiler mutex.
+ * Invoke registered post-sampling callbacks.
+ * Spy on unregistered threads.
+ * Based on the requested sampling interval, and how much time this loop took,
+ compute when the next sampling loop should start, and make the thread sleep
+ for the appropriate amount of time. The goal is to be as regular as
+ possible, but if some/all loops take too much time, don't try too hard to
+ catch up, because the system is probably under stress already.
+ * Go back to the top of the loop.
+
+* If we're here, we hit a loop ``break`` above.
+* Invoke registered post-sampling callbacks, to let them know that sampling
+ stopped.
+
+CPU Utilization
+===============
+
+CPU Utilization is stored as a number of milliseconds that a thread or process
+has spent running on the CPU since the previous sampling.
+
+Implementations are platform-dependent, and can be found in
+`the GetThreadRunningTimesDiff function <https://searchfox.org/mozilla-central/search?q=symbol:_ZL25GetThreadRunningTimesDiffRK10PSAutoLockRN7mozilla8profiler45ThreadRegistrationUnlockedRWForLockedProfilerE>`_
+and
+`the GetProcessRunningTimesDiff function <https://searchfox.org/mozilla-central/search?q=symbol:_ZL26GetProcessRunningTimesDiffRK10PSAutoLockR12RunningTimes>`_.
+
+Power Consumption
+=================
+
+Energy probes added in 2022.
+
+Stacks
+======
+
+Stacks are the sequence of calls going from the entry point in the program
+(generally ``main()`` and some OS-specific functions above), down to the
+function where code is currently being executed.
+
+Native Frames
+-------------
+
+Compiled code, from C++ and Rust source.
+
+Label Frames
+------------
+
+Pseudo-frames with arbitrary text, added from any language, mostly C++.
+
+JS, Wasm Frames
+---------------
+
+Frames corresponding to JavaScript functions.
+
+Java Frames
+-----------
+
+Recorded by the JavaSampler.
+
+Stack Merging
+-------------
+
+The above types of frames are all captured in different ways, and when finally
+taking an actual stack sample (apart from Java), they get merged into one stack.
+
+All frames have an associated address in the call stack, and can therefore be
+merged mostly by ordering them by this stack address. See
+`MergeStacks <https://searchfox.org/mozilla-central/search?q=symbol:_ZL11MergeStacksjbRKN7mozilla8profiler51ThreadRegistrationUnlockedReaderAndAtomicRWOnThreadERK9RegistersRK11NativeStackR22ProfilerStackCollectorPN2JS22ProfilingFrameIterator5FrameEj>`_
+for the implementation details.
+
+Counters
+========
+
+Counters are a special kind of probe, which can be continuously updated during
+profiling, and the ``SamplerThread`` will sample their value at every loop.
+
+Memory Counter
+--------------
+
+This is the main counter. During a profiling session, hooks into the memory
+manager keep track of each de/allocation, so at each sampling we know how many
+operations were performed, and what is the current memory usage compared to the
+previous sampling.
+
+Profiling Overhead
+==================
+
+The ``SamplerThread`` records timestamps between parts of its sampling loop, and
+records this as the sampling overhead. This may be useful to determine if the
+profiler itself may have used too much of the computer resources, which could
+skew the profile and give wrong impressions.
+
+Unregistered Thread Profiling
+=============================
+
+At some intervals (not necessarily every sampling loop, depending on the OS),
+the profiler may attempt to find unregistered threads, and record some
+information about them.
+
+WIP note: This feature is experimental, and data is captured in markers on the
+main thread. More work is needed to put this data in tracks like regular
+registered threads, and capture more data like stack samples and markers.
+
+*******
+Markers
+*******
+
+Markers are events with a precise timestamp or time range, they have a name, a
+category, options (out of a few choices), and optional marker-type-specific
+payload data.
+
+Before describing the implementation, it is useful to be familiar with how
+markers are natively added from C++, because this drives how the implementation
+takes all this information and eventually outputs it in the final JSON profile.
+
+Adding Markers from C++
+=======================
+
+See https://firefox-source-docs.mozilla.org/tools/profiler/markers-guide.html
+
+Implementation
+==============
+
+The main function that records markers is
+`profiler_add_marker <https://searchfox.org/mozilla-central/search?q=symbol:_Z19profiler_add_markerRKN7mozilla18ProfilerStringViewIcEERKNS_14MarkerCategoryEONS_13MarkerOptionsET_DpRKT0_>`_.
+It's a variadic templated function that takes the different the expected
+arguments, first checks if the marker should actually be recorded (the profiler
+should be running, and the target thread should be profiled), and then calls
+into the deeper implementation function ``AddMarkerToBuffer`` with a reference
+to the main profiler buffer.
+
+`AddMarkerToBuffer <https://searchfox.org/mozilla-central/search?q=symbol:_Z17AddMarkerToBufferRN7mozilla20ProfileChunkedBufferERKNS_18ProfilerStringViewIcEERKNS_14MarkerCategoryEONS_13MarkerOptionsET_DpRKT0_>`_
+takes the marker type as an object, removes it from the function parameter list,
+and calls the next function with the marker type as an explicit template
+parameter, and also a pointer to the function that can capture the stack
+(because it is different between Base and Gecko Profilers, in particular the
+latter one knows about JS).
+
+From here, we enter the land of
+`BaseProfilerMarkersDetail.h <https://searchfox.org/mozilla-central/source/mozglue/baseprofiler/public/BaseProfilerMarkersDetail.h>`_,
+which employs some heavy template techniques, in order to most efficiently
+serialize the given marker payload arguments, in order to make them
+deserializable when outputting the final JSON. In previous implementations, for
+each new marker type, a new C++ class derived from a payload abstract class was
+required, that had to implement all the constructors and virtual functions to:
+
+* Create the payload object.
+* Serialize the payload into the profile buffer.
+* Deserialize from the profile buffer to a new payload object.
+* Convert the payload into the final output JSON.
+
+Now, the templated functions automatically take care of serializing all given
+function call arguments directly (instead of storing them somewhere first), and
+preparing a deserialization function that will recreate them on the stack and
+directly call the user-provided JSONification function with these arguments.
+
+Continuing from the public ``AddMarkerToBuffer``,
+`mozilla::base_profiler_markers_detail::AddMarkerToBuffer <https://searchfox.org/mozilla-central/search?q=symbol:_ZN7mozilla28base_profiler_markers_detail17AddMarkerToBufferERNS_20ProfileChunkedBufferERKNS_18ProfilerStringViewIcEERKNS_14MarkerCategoryEONS_13MarkerOptionsEPFbS2_NS_19StackCaptureOptionsEEDpRKT0_>`_
+sets some defaults if not specified by the caller: Target the current thread,
+use the current time.
+
+Then if a stack capture was requested, attempt to do it in
+the most efficient way, using a pre-allocated buffer if possible.
+
+WIP note: This potential allocation should be avoided in time-critical thread.
+There is already a buffer for the main thread (because it's the busiest thread),
+but there could be more pre-allocated threads, for specific real-time thread
+that need it, or picked from a pool of pre-allocated buffers. See
+`bug 1578792 <https://bugzilla.mozilla.org/show_bug.cgi?id=1578792>`_.
+
+From there, `AddMarkerWithOptionalStackToBuffer <https://searchfox.org/mozilla-central/search?q=AddMarkerWithOptionalStackToBuffer>`_
+handles ``NoPayload`` markers (usually added with ``PROFILER_MARKER_UNTYPED``)
+in a special way, mostly to avoid the extra work associated with handling
+payloads. Otherwise it continues with the following function.
+
+`MarkerTypeSerialization<MarkerType>::Serialize <symbol:_ZN7mozilla28base_profiler_markers_detail23MarkerTypeSerialization9SerializeERNS_20ProfileChunkedBufferERKNS_18ProfilerStringViewIcEERKNS_14MarkerCategoryEONS_13MarkerOptionsEDpRKTL0__>`_
+retrieves the deserialization tag associated with the marker type. If it's the
+first time this marker type is used,
+`Streaming::TagForMarkerTypeFunctions <symbol:_ZN7mozilla28base_profiler_markers_detail9Streaming25TagForMarkerTypeFunctionsEPFvRNS_24ProfileBufferEntryReaderERNS_12baseprofiler20SpliceableJSONWriterEEPFNS_4SpanIKcLy18446744073709551615EEEvEPFNS_12MarkerSchemaEvE,_ZN7mozilla28base_profiler_markers_detail9Streaming25TagForMarkerTypeFunctionsEPFvRNS_24ProfileBufferEntryReaderERNS_12baseprofiler20SpliceableJSONWriterEEPFNS_4SpanIKcLm18446744073709551615EEEvEPFNS_12MarkerSchemaEvE,_ZN7mozilla28base_profiler_markers_detail9Streaming25TagForMarkerTypeFunctionsEPFvRNS_24ProfileBufferEntryReaderERNS_12baseprofiler20SpliceableJSONWriterEEPFNS_4SpanIKcLj4294967295EEEvEPFNS_12MarkerSchemaEvE>`_
+adds it to the global list (which stores some function pointers used during
+deserialization).
+
+Then the main serialization happens in
+`StreamFunctionTypeHelper<decltype(MarkerType::StreamJSONMarkerData)>::Serialize <symbol:_ZN7mozilla28base_profiler_markers_detail24StreamFunctionTypeHelperIFT_RNS_12baseprofiler20SpliceableJSONWriterEDpT0_EE9SerializeERNS_20ProfileChunkedBufferERKNS_18ProfilerStringViewIcEERKNS_14MarkerCategoryEONS_13MarkerOptionsEhDpRKS6_>`_.
+Deconstructing this mouthful of an template:
+
+* ``MarkerType::StreamJSONMarkerData`` is the user-provided function that will
+ eventually produce the final JSON, but here it's only used to know the
+ parameter types that it expects.
+* ``StreamFunctionTypeHelper`` takes that function prototype, and can extract
+ its argument by specializing on ```R(SpliceableJSONWriter&, As...)``, now
+ ``As...`` is a parameter pack matching the function parameters.
+* Note that ``Serialize`` also takes a parameter pack, which contains all the
+ referenced arguments given to the top ``AddBufferToMarker`` call. These two
+ packs are supposed to match, at least the given arguments should be
+ convertible to the target pack parameter types.
+* That specialization's ``Serialize`` function calls the buffer's ``PutObjects``
+ variadic function to write all the marker data, that is:
+
+ * The entry kind that must be at the beginning of every buffer entry, in this
+ case `ProfileBufferEntryKind::Marker <https://searchfox.org/mozilla-central/source/mozglue/baseprofiler/public/ProfileBufferEntryKinds.h#78>`_.
+ * The common marker data (options first, name, category, deserialization tag).
+ * Then all the marker-type-specific arguments. Note that the C++ types
+ are those extracted from the deserialization function, so we know that
+ whatever is serialized here can be later deserialized using those same
+ types.
+
+The deserialization side is described in the later section "JSON output of
+Markers".
+
+Adding Markers from Rust
+========================
+
+See https://firefox-source-docs.mozilla.org/tools/profiler/instrumenting-rust.html#adding-markers
+
+Adding Markers from JS
+======================
+
+See https://firefox-source-docs.mozilla.org/tools/profiler/instrumenting-javascript.html
+
+Adding Markers from Java
+========================
+
+See https://searchfox.org/mozilla-central/source/mobile/android/geckoview/src/main/java/org/mozilla/geckoview/ProfilerController.java
+
+*************
+Profiling Log
+*************
+
+During a profiling session, some profiler-related events may be recorded using
+`ProfilingLog::Access <https://searchfox.org/mozilla-central/search?q=symbol:_ZN12ProfilingLog6AccessEOT_>`_.
+
+The resulting JSON object is added near the end of the process' JSON generation,
+in a top-level property named "profilingLog". This object is free-form, and is
+not intended to be displayed, or even read by most people. But it may include
+interesting information for advanced users, or could be an early temporary
+prototyping ground for new features.
+
+See "profileGatheringLog" for another log related to late events.
+
+WIP note: This was introduced shortly before this documentation, so at this time
+it doesn't do much at all.
+
+***************
+Profile Capture
+***************
+
+Usually at the end of a profiling session, a profile is "captured", and either
+saved to disk, or sent to the front-end https://profiler.firefox.com for
+analysis. This section describes how the captured data is converted to the
+Gecko Profiler JSON format.
+
+FailureLatch
+============
+
+`The FailureLatch interface <https://searchfox.org/mozilla-central/search?q=symbol:T_mozilla%3A%3AFailureLatch>`_
+is used during the JSON generation, in order to catch any unrecoverable error
+(such as running Out Of Memory), to exit the process early, and to forward the
+error to callers.
+
+There are two main implementations, suffixed "source" as they are the one source
+of failure-handling, which is passed as ``FailureLatch&`` throughout the code:
+
+* `FailureLatchInfallibleSource <https://searchfox.org/mozilla-central/search?q=symbol:T_mozilla%3A%3AFailureLatchInfallibleSource>`_
+ is an "infallible" latch, meaning that it doesn't expect any failure. So if
+ a failure actually happened, the program would immediately terminate! (This
+ was the default behavior prior to introducing these latches.)
+* `FailureLatchSource <https://searchfox.org/mozilla-central/search?q=symbol:T_mozilla%3A%3AFailureLatchSource>`_
+ is a "fallible" latch, it will record the first failure that happens, and
+ "latch" into the failure state. The code should regularly examine this state,
+ and return early when possible. Eventually this failure state may be exposed
+ to end users.
+
+ProgressLogger, ProportionValue
+===============================
+
+`A ProgressLogger object <https://searchfox.org/mozilla-central/search?q=symbol:T_mozilla%3A%3AProgressLogger>`_
+is used to track the progress of a long operation, in this case the JSON
+generation process.
+
+To match how the JSON generation code works (as a tree of C++ functions calls),
+each ``ProgressLogger`` in a function usually records progress from 0 to 100%
+locally inside that function. If that function calls a sub-function, it gives it
+a sub-logger, which in the caller function is set to represent a local sub-range
+(like 20% to 40%), but to the called function it will look like its own local
+``ProgressLogger`` that goes from 0 to 100%. The very top ``ProgressLogger``
+converts the deepest local progress value to the corresponding global progress.
+
+Progress values are recorded in
+`ProportionValue objects <https://searchfox.org/mozilla-central/search?q=symbol:T_mozilla%3A%3AProportionValue>`_,
+which effectively record fractional value with no loss of precision.
+
+This progress is most useful when the parent process is waiting for child
+processes to do their work, to make sure progress does happen, otherwise to stop
+waiting for frozen processes. More about that in the "Multi-Process Profiling"
+section below.
+
+JSONWriter
+==========
+
+`A JSONWriter object <https://searchfox.org/mozilla-central/search?q=symbol:T_mozilla%3A%3AJSONWriter>`_
+offers a simple way to create a JSON stream (start/end collections, add
+elements, etc.), and calls back into a provided
+`JSONWriteFunc interface <https://searchfox.org/mozilla-central/search?q=symbol:T_mozilla%3A%3AJSONWriteFunc>`_
+to output characters.
+
+While these classes live outside of the Profiler directories, it may sometimes be
+worth maintaining and/or modifying them to better serve the Profiler's needs.
+But there are other users, so be careful not to break other things!
+
+SpliceableJSONWriter and SpliceableChunkedJSONWriter
+====================================================
+
+Because the Profiler deals with large amounts of data (big profiles can take
+tens to hundreds of megabytes!), some specialized wrappers add better handling
+of these large JSON streams.
+
+`SpliceableJSONWriter <https://searchfox.org/mozilla-central/search?q=symbol:T_mozilla%3A%3Abaseprofiler%3A%3ASpliceableJSONWriter>`_
+is a subclass of ``JSONWriter``, and allows the "splicing" of JSON strings,
+i.e., being able to take a whole well-formed JSON string, and directly inserting
+it as a JSON object in the target JSON being streamed.
+
+It also offers some functions that are often useful for the Profiler, such as:
+* Converting a timestamp into a JSON object in the stream, taking care of keeping a nanosecond precision, without unwanted zeroes or nines at the end.
+* Adding a number of null elements.
+* Adding a unique string index, and add that string to a provided unique-string list if necessary. (More about UniqueStrings below.)
+
+`SpliceableChunkedJSONWriter <https://searchfox.org/mozilla-central/search?q=symbol:T_mozilla%3A%3Abaseprofiler%3A%3ASpliceableChunkedJSONWriter>`_
+is a subclass of ``SpliceableJSONWriter``. Its main attribute is that it provides its own writer
+(`ChunkedJSONWriteFunc <https://searchfox.org/mozilla-central/search?q=symbol:T_mozilla%3A%3Abaseprofiler%3A%3AChunkedJSONWriteFunc>`_),
+which stores the stream as a sequence of "chunks" (heap-allocated buffers).
+It starts with a chunk of a default size, and writes incoming data into it,
+later allocating more chunks as needed. This avoids having massive buffers being
+resized all the time.
+
+It also offers the same splicing abilities as its parent class, but in case an
+incoming JSON string comes from another ``SpliceableChunkedJSONWriter``, it's
+able to just steal the chunks and add them to its list, thereby avoiding
+expensive allocations and copies and destructions.
+
+UniqueStrings
+=============
+
+Because a lot of strings would be repeated in profiles (e.g., frequent marker
+names), such strings are stored in a separate JSON array of strings, and an
+index into this list is used instead of that full string object.
+
+Note that these unique-string indices are currently only located in specific
+spots in the JSON tree, they cannot be used just anywhere strings are accepted.
+
+`The UniqueJSONStrings class <https://searchfox.org/mozilla-central/search?q=symbol:T_mozilla%3A%3Abaseprofiler%3A%3AUniqueJSONStrings>`_
+stores this list of unique strings in a ``SpliceableChunkedJSONWriter``.
+Given a string, it takes care of storing it if encountered for the first time,
+and inserts the index into a target ``SpliceableJSONWriter``.
+
+JSON Generation
+===============
+
+The "Gecko Profile Format" can be found at
+https://github.com/firefox-devtools/profiler/blob/main/docs-developer/gecko-profile-format.md .
+
+The implementation in the back-end is
+`locked_profiler_stream_json_for_this_process <https://searchfox.org/mozilla-central/search?q=locked_profiler_stream_json_for_this_process>`_.
+It outputs each JSON top-level JSON object, mostly in sequence. See the code for
+how each object is output. Note that there is special handling for samples and
+markers, as explained in the following section.
+
+ProcessStreamingContext and ThreadStreamingContext
+--------------------------------------------------
+
+In JSON profiles, samples and markers are separated by thread and by
+samples/markers. Because there are potentially tens to a hundred threads, it
+would be very costly to read the full profile buffer once for each of these
+groups. So instead the buffer is read once, and all samples and markers are
+handled as they are read, and their JSON output is sent to separate JSON
+writers.
+
+`A ProcessStreamingContext object <https://searchfox.org/mozilla-central/search?q=symbol:T_ProcessStreamingContext>`_
+contains all the information to facilitate this output, including a list of
+`ThreadStreamingContext's <https://searchfox.org/mozilla-central/search?q=symbol:T_ThreadStreamingContext>`_,
+which each contain one ``SpliceableChunkedJSONWriter`` for the samples, and one
+for the markers in this thread.
+
+When reading entries from the profile buffer, samples and markers are found by
+their ``ProfileBufferEntryKind``, and as part of deserializing either kind (more
+about each below), the thread ID is read, and determines which
+``ThreadStreamingContext`` will receive the JSON output.
+
+At the end of this process, all ``SpliceableChunkedJSONWriters`` are efficiently
+spliced (mainly a pointer move) into the final JSON output.
+
+JSON output of Samples
+----------------------
+
+This work is done in
+`ProfileBuffer::DoStreamSamplesAndMarkersToJSON <https://searchfox.org/mozilla-central/search?q=DoStreamSamplesAndMarkersToJSON>`_.
+
+From the main ``ProfileChunkedBuffer``, each entry is visited, its
+``ProfileBufferEntryKind`` is read first, and for samples all frames from
+captured stack are converted to the appropriate JSON.
+
+`A UniqueStacks object <https://searchfox.org/mozilla-central/search?q=symbol:T_UniqueStacks>`_
+is used to de-duplicate frames and even sub-stacks:
+
+* Each unique frame string is written into a JSON array inside a
+ ``SpliceableChunkedJSONWriter``, and its index is the frame identifier.
+* Each stack level is also de-duplicated, and identifies the associated frame
+ string, and points at the calling stack level (i.e., closer to the root).
+* Finally, the identifier for the top of the stack is stored, along with a
+ timestamp (and potentially some more information) as the sample.
+
+For example, if we have collected the following samples:
+
+#. A -> B -> C
+#. A -> B
+#. A -> B -> D
+
+The frame table would contain each frame name, something like:
+``["A", "B", "C", "D"]``. So the frame containing "A" has index 0, "B" is at 1,
+etc.
+
+The stack table would contain each stack level, something like:
+``[[0, null], [1, 0], [2, 1], [3, 1]]``. ``[0, null]`` means the frame is 0
+("A"), and it has no caller, it's the root frame. ``[1, 0]`` means the frame is
+1 ("B"), and its caller is stack 0, which is just the previous one in this
+example.
+
+And the three samples stored in the thread data would be therefore be: 2, 1, 3
+(E.g.: "2" points in the stack table at the frame [2,1] with "C", and from them
+down to "B", then "A").
+
+All this contains all the information needed to reconstruct all full stack
+samples.
+
+JSON output of Markers
+----------------------
+
+This also happens
+`inside ProfileBuffer::DoStreamSamplesAndMarkersToJSON <https://searchfox.org/mozilla-central/search?q=DoStreamSamplesAndMarkersToJSON>`_.
+
+When a ``ProfileBufferEntryKind::Marker`` is encountered,
+`the DeserializeAfterKindAndStream function <https://searchfox.org/mozilla-central/search?q=DeserializeAfterKindAndStream>`_
+reads the ``MarkerOptions`` (stored as explained above), which include the
+thread ID, identifying which ``ThreadStreamingContext``'s
+``SpliceableChunkedJSONWriter`` to use.
+
+After that, the common marker data (timing, category, etc.) is output.
+
+Then the ``Streaming::DeserializerTag`` identifies which type of marker this is.
+The special case of ``0`` (no payload) means nothing more is output.
+
+Otherwise some more common data is output as part of the payload if present, in
+particular the "inner window id" (used to match markers with specific html
+frames), and stack.
+
+WIP note: Some of these may move around in the future, see
+`bug 1774326 <https://bugzilla.mozilla.org/show_bug.cgi?id=1774326>`_,
+`bug 1774328 <https://bugzilla.mozilla.org/show_bug.cgi?id=1774328>`_, and
+others.
+
+In case of a C++-written payload, the ``DeserializerTag`` identifies the
+``MarkerDataDeserializer`` function to use. This is part of the heavy templated
+code in BaseProfilerMarkersDetail.h, the function is defined as
+`MarkerTypeSerialization<MarkerType>::Deserialize <https://searchfox.org/mozilla-central/search?q=symbol:_ZN7mozilla28base_profiler_markers_detail23MarkerTypeSerialization11DeserializeERNS_24ProfileBufferEntryReaderERNS_12baseprofiler20SpliceableJSONWriterE>`_,
+which outputs the marker type name, and then each marker payload argument. The
+latter is done by using the user-defined ``MarkerType::StreamJSONMarkerData``
+parameter list, and recursively deserializing each parameter from the profile
+buffer into an on-stack variable of a corresponding type, at the end of which
+``MarkerType::StreamJSONMarkerData`` can be called with all of these arguments
+at it expects, and that function does the actual JSON streaming as the user
+programmed.
+
+*************
+Profiler Stop
+*************
+
+See "Profiler Start" and do the reverse!
+
+There is some special handling of the ``SampleThread`` object, just to ensure
+that it gets deleted outside of the main profiler mutex being locked, otherwise
+this could result in a deadlock (because it needs to take the lock before being
+able to check the state variable indicating that the sampling loop and thread
+should end).
+
+*****************
+Profiler Shutdown
+*****************
+
+See "Profiler Initialization" and do the reverse!
+
+One additional action is handling the optional ``MOZ_PROFILER_SHUTDOWN``
+environment variable, to output a profile if the profiler was running.
+
+***********************
+Multi-Process Profiling
+***********************
+
+All of the above explanations focused on what the profiler is doing is each
+process: Starting, running and collecting samples, markers, and more data,
+outputting JSON profiles, and stopping.
+
+But Firefox is a multi-process program, since
+`Electrolysis aka e10s <https://wiki.mozilla.org/Electrolysis>`_ introduce child
+processes to handle web content and extensions, and especially since
+`Fission <https://wiki.mozilla.org/Project_Fission>`_ forced even parts of the
+same webpage to run in separate processes, mainly for added security. Since then
+Firefox can spawn many processes, sometimes 10 to 20 when visiting busy sites.
+
+The following sections explains how profiling Firefox as a whole works.
+
+IPC (Inter-Process Communication)
+=================================
+
+See https://firefox-source-docs.mozilla.org/ipc/.
+
+As a quick summary, some message-passing function-like declarations live in
+`PProfiler.ipdl <https://searchfox.org/mozilla-central/source/tools/profiler/gecko/PProfiler.ipdl>`_,
+and corresponding ``SendX`` and ``RecvX`` C++ functions are respectively
+generated in
+`PProfilerParent.h <https://searchfox.org/mozilla-central/source/__GENERATED__/ipc/ipdl/_ipdlheaders/mozilla/PProfilerParent.h>`_,
+and virtually declared (for user implementation) in
+`PProfilerChild.h <https://searchfox.org/mozilla-central/source/__GENERATED__/ipc/ipdl/_ipdlheaders/mozilla/PProfilerChild.h>`_.
+
+During Profiling
+================
+
+Exit profiles
+-------------
+
+One IPC message that is not in PProfiler.ipdl, is
+`ShutdownProfile <https://searchfox.org/mozilla-central/search?q=ShutdownProfile%28&path=&case=false&regexp=false>`_
+in
+`PContent.ipdl <https://searchfox.org/mozilla-central/source/dom/ipc/PContent.ipdl>`_.
+
+It's called from
+`ContentChild::ShutdownInternal <https://searchfox.org/mozilla-central/search?q=symbol:_ZN7mozilla3dom12ContentChild16ShutdownInternalEv>`_,
+just before a child process ends, and if the profiler was running, to ensure
+that the profile data is collected and sent to the parent, for storage in its
+``ActivePS``.
+
+See
+`ActivePS::AddExitProfile <https://searchfox.org/mozilla-central/search?q=symbol:_ZN8ActivePS14AddExitProfileERK10PSAutoLockRK12nsTSubstringIcE>`_
+for details. Note that the current "buffer position at gathering time" (which is
+effectively the largest ``ProfileBufferBlockIndex`` that is present in the
+global profile buffer) is recorded. Later,
+`ClearExpiredExitProfiles <https://searchfox.org/mozilla-central/search?q=ClearExpiredExitProfiles>`_
+looks at the **smallest** ``ProfileBufferBlockIndex`` still present in the
+buffer (because early chunks may have been discarded to limit memory usage), and
+discards exit profiles that were recorded before, because their data is now
+older than anything stored in the parent.
+
+Profile Buffer Global Memory Control
+------------------------------------
+
+Each process runs its own profiler, with each its own profile chunked buffer. To
+keep the overall memory usage of all these buffers under the user-picked limit,
+processes work together, with the parent process overseeing things.
+
+Diagram showing the relevant classes, see details in the following sub-sections:
+
+.. image:: fissionprofiler-20200424.png
+
+ProfileBufferControlledChunkManager
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+`The ProfileBufferControlledChunkManager interface <https://searchfox.org/mozilla-central/search?q=symbol:T_mozilla%3A%3AProfileBufferControlledChunkManager>`_
+allows a controller to get notified about all chunk updates, and to force the
+destruction/recycling of old chunks.
+`The ProfileBufferChunkManagerWithLocalLimit class <https://searchfox.org/mozilla-central/search?q=symbol:T_mozilla%3A%3AProfileBufferChunkManagerWithLocalLimit>`_
+implements it.
+
+`An Update object <https://searchfox.org/mozilla-central/search?q=symbol:T_mozilla%3A%3AProfileBufferControlledChunkManager%3A%3AUpdate>`_
+contains all information related to chunk changes: How much memory is currently
+used by the local chunk manager, how much has been "released" (and therefore
+could be destroyed/recycled), and a list of all chunks that were released since
+the previous update; it also has a special state meaning that the child is
+shutting down so there won't be updates anymore. An ``Update`` may be "folded"
+into a previous one, to create a combined update equivalent to the two separate
+ones one after the other.
+
+Update Handling in the ProfilerChild
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+When the profiler starts in a child process, the ``ProfilerChild``
+`starts to listen for updates <https://searchfox.org/mozilla-central/search?q=symbol:_ZN7mozilla13ProfilerChild17SetupChunkManagerEv>`_.
+
+These updates are stored and folded into previous ones (if any). At some point,
+`an AwaitNextChunkManagerUpdate message <https://searchfox.org/mozilla-central/search?q=RecvAwaitNextChunkManagerUpdate>`_
+will be received, and any update can be forwarded to the parent. The local
+update is cleared, ready to store future updates.
+
+Update Handling in the ProfilerParent
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+When the profiler starts AND when there are child processes, the
+`ProfilerParent's ProfilerParentTracker <https://searchfox.org/mozilla-central/search?q=ProfilerParentTracker>`_
+creates
+`a ProfileBufferGlobalController <https://searchfox.org/mozilla-central/search?q=ProfileBufferGlobalController>`_,
+which starts to listen for updates from the local chunk manager.
+
+The ``ProfilerParentTracker`` is also responsible for keeping track of child
+processes, and to regularly
+`send them AwaitNextChunkManagerUpdate messages <https://searchfox.org/mozilla-central/search?q=SendAwaitNextChunkManagerUpdate>`_,
+that the child's ``ProfilerChild`` answers to with updates. The update may
+indicate that the child is shutting down, in which case the tracker will stop
+tracking it.
+
+All these updates (from the local chunk manager, and from child processes' own
+chunk managers) are processed in
+`ProfileBufferGlobalController::HandleChunkManagerNonFinalUpdate <https://searchfox.org/mozilla-central/search?q=HandleChunkManagerNonFinalUpdate>`_.
+Based on this stream of updates, it is possible to calculate the total memory
+used by all profile buffers in all processes, and to keep track of all chunks
+that have been "released" (i.e., are full, and can be destroyed). When the total
+memory usage reaches the user-selected limit, the controller can lookup the
+oldest chunk, and get it destroyed (either a local call for parent chunks, or by
+sending
+`a DestroyReleasedChunksAtOrBefore message <https://searchfox.org/mozilla-central/search?q=DestroyReleasedChunksAtOrBefore>`_
+to the owning child).
+
+Historical note: Prior to Fission, the Profiler used to keep one fixed-size
+circular buffer in each process, but as Fission made the possible number of
+processes unlimited, the memory consumption grew too fast, and required the
+implementation of the above system. But there may still be mentions of
+"circular buffers" in the code or documents; these have effectively been
+replaced by chunked buffers, with centralized chunk control.
+
+Gathering Child Profiles
+========================
+
+When it's time to capture a full profile, the parent process performs its own
+JSON generation (as described above), and sends
+`a GatherProfile message <https://searchfox.org/mozilla-central/search?q=GatherProfile%28>`_
+to all child processes, which will make them generate their JSON profile and
+send it back to the parent.
+
+All child profiles, including the exit profiles collected during profiling, are
+stored as elements of a top-level array with property name "processes".
+
+During the gathering phase, while the parent is waiting for child responses, it
+regularly sends
+`GetGatherProfileProgress messages <https://searchfox.org/mozilla-central/search?q=GetGatherProfileProgress>`_
+to all child processes that have not sent their profile yet, and the parent
+expects responses within a short timeframe. The response carries a progress
+value. If at some point two messages went with no progress was made anywhere
+(either there was no response, or the progress value didn't change), the parent
+assumes that remaining child processes may be frozen indefinitely, stops the
+gathering and considers the JSON generation complete.
+
+During all of the above work, events are logged (especially issues with child
+processes), and are added at the end of the JSON profile, in a top-level object
+with property name "profileGatheringLog". This object is free-form, and is not
+intended to be displayed, or even read by most people. But it may include
+interesting information for advanced users regarding the profile-gathering
+phase.
diff --git a/tools/profiler/docs/fissionprofiler-20200424.png b/tools/profiler/docs/fissionprofiler-20200424.png
new file mode 100644
index 0000000000..1602877a5b
--- /dev/null
+++ b/tools/profiler/docs/fissionprofiler-20200424.png
Binary files differ
diff --git a/tools/profiler/docs/fissionprofiler.umlet.uxf b/tools/profiler/docs/fissionprofiler.umlet.uxf
new file mode 100644
index 0000000000..3325294e25
--- /dev/null
+++ b/tools/profiler/docs/fissionprofiler.umlet.uxf
@@ -0,0 +1,546 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<diagram program="umlet" version="14.3.0">
+ <zoom_level>10</zoom_level>
+ <element>
+ <id>UMLClass</id>
+ <coordinates>
+ <x>70</x>
+ <y>110</y>
+ <w>300</w>
+ <h>70</h>
+ </coordinates>
+ <panel_attributes>/PProfilerParent/
+bg=light_gray
+--
+*+SendAwaitNextChunkManagerUpdate()*
+*+SendDestroyReleasedChunksAtOrBefore()*</panel_attributes>
+ <additional_attributes/>
+ </element>
+ <element>
+ <id>UMLClass</id>
+ <coordinates>
+ <x>470</x>
+ <y>20</y>
+ <w>210</w>
+ <h>70</h>
+ </coordinates>
+ <panel_attributes>*ProfileBufferChunkMetadata*
+bg=light_gray
+--
++doneTimeStamp
++bufferBytes
+</panel_attributes>
+ <additional_attributes/>
+ </element>
+ <element>
+ <id>UMLClass</id>
+ <coordinates>
+ <x>780</x>
+ <y>110</y>
+ <w>330</w>
+ <h>70</h>
+ </coordinates>
+ <panel_attributes>/PProfilerChild/
+bg=light_gray
+--
+*/+RecvAwaitNextChunkManagerUpdate() = 0/*
+*/+RecvDestroyReleasedChunksAtOrBefore() = 0/*
+</panel_attributes>
+ <additional_attributes/>
+ </element>
+ <element>
+ <id>UMLClass</id>
+ <coordinates>
+ <x>110</x>
+ <y>260</y>
+ <w>220</w>
+ <h>70</h>
+ </coordinates>
+ <panel_attributes>ProfilerParent
+--
+*-processId*
+--
+</panel_attributes>
+ <additional_attributes/>
+ </element>
+ <element>
+ <id>Relation</id>
+ <coordinates>
+ <x>210</x>
+ <y>170</y>
+ <w>30</w>
+ <h>110</h>
+ </coordinates>
+ <panel_attributes>lt=&lt;&lt;-</panel_attributes>
+ <additional_attributes>10.0;10.0;10.0;90.0</additional_attributes>
+ </element>
+ <element>
+ <id>UMLClass</id>
+ <coordinates>
+ <x>740</x>
+ <y>250</y>
+ <w>410</w>
+ <h>90</h>
+ </coordinates>
+ <panel_attributes>ProfilerChild
+--
+-UpdateStorage: unreleased bytes, released: {pid, rangeStart[ ]}
+--
+*+RecvAwaitNextChunkUpdate()*
+*+RecvDestroyReleasedChunksAtOrBefore()*
+</panel_attributes>
+ <additional_attributes/>
+ </element>
+ <element>
+ <id>Relation</id>
+ <coordinates>
+ <x>930</x>
+ <y>170</y>
+ <w>30</w>
+ <h>100</h>
+ </coordinates>
+ <panel_attributes>lt=&lt;&lt;-</panel_attributes>
+ <additional_attributes>10.0;10.0;10.0;80.0</additional_attributes>
+ </element>
+ <element>
+ <id>UMLClass</id>
+ <coordinates>
+ <x>110</x>
+ <y>400</y>
+ <w>220</w>
+ <h>70</h>
+ </coordinates>
+ <panel_attributes>ProfilerParentTracker
+--
+_+Enumerate()_
+_*+ForChild()*_</panel_attributes>
+ <additional_attributes/>
+ </element>
+ <element>
+ <id>Relation</id>
+ <coordinates>
+ <x>210</x>
+ <y>320</y>
+ <w>190</w>
+ <h>100</h>
+ </coordinates>
+ <panel_attributes>lt=&lt;-
+m1=0..n
+nsTArray&lt;ProfilerParent*&gt;</panel_attributes>
+ <additional_attributes>10.0;10.0;10.0;80.0</additional_attributes>
+ </element>
+ <element>
+ <id>UMLClass</id>
+ <coordinates>
+ <x>80</x>
+ <y>1070</y>
+ <w>150</w>
+ <h>30</h>
+ </coordinates>
+ <panel_attributes>ProfileBufferChunk</panel_attributes>
+ <additional_attributes/>
+ </element>
+ <element>
+ <id>UMLClass</id>
+ <coordinates>
+ <x>380</x>
+ <y>1070</y>
+ <w>210</w>
+ <h>30</h>
+ </coordinates>
+ <panel_attributes>/ProfileBufferChunkManager/</panel_attributes>
+ <additional_attributes/>
+ </element>
+ <element>
+ <id>UMLClass</id>
+ <coordinates>
+ <x>180</x>
+ <y>900</y>
+ <w>700</w>
+ <h>50</h>
+ </coordinates>
+ <panel_attributes>ProfileBufferChunkManagerWithLocalLimit
+--
+-mUpdateCallback</panel_attributes>
+ <additional_attributes/>
+ </element>
+ <element>
+ <id>Relation</id>
+ <coordinates>
+ <x>480</x>
+ <y>940</y>
+ <w>30</w>
+ <h>150</h>
+ </coordinates>
+ <panel_attributes>lt=&lt;&lt;-</panel_attributes>
+ <additional_attributes>10.0;130.0;10.0;10.0</additional_attributes>
+ </element>
+ <element>
+ <id>UMLClass</id>
+ <coordinates>
+ <x>380</x>
+ <y>1200</y>
+ <w>210</w>
+ <h>30</h>
+ </coordinates>
+ <panel_attributes>ProfileChunkedBuffer</panel_attributes>
+ <additional_attributes/>
+ </element>
+ <element>
+ <id>Relation</id>
+ <coordinates>
+ <x>410</x>
+ <y>1090</y>
+ <w>140</w>
+ <h>130</h>
+ </coordinates>
+ <panel_attributes>lt=-&gt;&gt;&gt;&gt;
+mChunkManager</panel_attributes>
+ <additional_attributes>10.0;10.0;10.0;110.0</additional_attributes>
+ </element>
+ <element>
+ <id>UMLClass</id>
+ <coordinates>
+ <x>960</x>
+ <y>1200</y>
+ <w>100</w>
+ <h>30</h>
+ </coordinates>
+ <panel_attributes>CorePS</panel_attributes>
+ <additional_attributes/>
+ </element>
+ <element>
+ <id>UMLClass</id>
+ <coordinates>
+ <x>960</x>
+ <y>1040</y>
+ <w>100</w>
+ <h>30</h>
+ </coordinates>
+ <panel_attributes>ActivePS</panel_attributes>
+ <additional_attributes/>
+ </element>
+ <element>
+ <id>Relation</id>
+ <coordinates>
+ <x>580</x>
+ <y>1200</y>
+ <w>400</w>
+ <h>40</h>
+ </coordinates>
+ <panel_attributes>lt=-&gt;&gt;&gt;&gt;&gt;
+mCoreBuffer</panel_attributes>
+ <additional_attributes>10.0;20.0;380.0;20.0</additional_attributes>
+ </element>
+ <element>
+ <id>Relation</id>
+ <coordinates>
+ <x>870</x>
+ <y>940</y>
+ <w>250</w>
+ <h>120</h>
+ </coordinates>
+ <panel_attributes>lt=-&gt;&gt;&gt;&gt;&gt;
+mProfileBufferChunkManager</panel_attributes>
+ <additional_attributes>10.0;10.0;90.0;100.0</additional_attributes>
+ </element>
+ <element>
+ <id>UMLClass</id>
+ <coordinates>
+ <x>830</x>
+ <y>1140</y>
+ <w>100</w>
+ <h>30</h>
+ </coordinates>
+ <panel_attributes>ProfileBuffer</panel_attributes>
+ <additional_attributes/>
+ </element>
+ <element>
+ <id>Relation</id>
+ <coordinates>
+ <x>920</x>
+ <y>1060</y>
+ <w>130</w>
+ <h>110</h>
+ </coordinates>
+ <panel_attributes>lt=-&gt;&gt;&gt;&gt;&gt;
+mProfileBuffer</panel_attributes>
+ <additional_attributes>10.0;90.0;40.0;10.0</additional_attributes>
+ </element>
+ <element>
+ <id>Relation</id>
+ <coordinates>
+ <x>580</x>
+ <y>1160</y>
+ <w>270</w>
+ <h>70</h>
+ </coordinates>
+ <panel_attributes>lt=-&gt;&gt;&gt;&gt;
+mEntries</panel_attributes>
+ <additional_attributes>10.0;50.0;250.0;10.0</additional_attributes>
+ </element>
+ <element>
+ <id>Relation</id>
+ <coordinates>
+ <x>90</x>
+ <y>1090</y>
+ <w>310</w>
+ <h>150</h>
+ </coordinates>
+ <panel_attributes>lt=-&gt;&gt;&gt;&gt;&gt;
+m1=0..1
+mCurrentChunk: UniquePtr&lt;&gt;</panel_attributes>
+ <additional_attributes>10.0;10.0;10.0;130.0;290.0;130.0</additional_attributes>
+ </element>
+ <element>
+ <id>Relation</id>
+ <coordinates>
+ <x>210</x>
+ <y>1080</y>
+ <w>200</w>
+ <h>150</h>
+ </coordinates>
+ <panel_attributes>lt=-&gt;&gt;&gt;&gt;&gt;
+m1=0..N
+mNextChunks: UniquePtr&lt;&gt;</panel_attributes>
+ <additional_attributes>20.0;10.0;170.0;130.0</additional_attributes>
+ </element>
+ <element>
+ <id>Relation</id>
+ <coordinates>
+ <x>200</x>
+ <y>940</y>
+ <w>230</w>
+ <h>150</h>
+ </coordinates>
+ <panel_attributes>lt=-&gt;&gt;&gt;&gt;&gt;
+m1=0..N
+mReleasedChunks: UniquePtr&lt;&gt;</panel_attributes>
+ <additional_attributes>10.0;130.0;10.0;10.0</additional_attributes>
+ </element>
+ <element>
+ <id>Relation</id>
+ <coordinates>
+ <x>530</x>
+ <y>1090</y>
+ <w>270</w>
+ <h>130</h>
+ </coordinates>
+ <panel_attributes>lt=-&gt;&gt;&gt;&gt;&gt;
+mOwnedChunkManager: UniquePtr&lt;&gt;</panel_attributes>
+ <additional_attributes>10.0;10.0;10.0;110.0</additional_attributes>
+ </element>
+ <element>
+ <id>UMLClass</id>
+ <coordinates>
+ <x>480</x>
+ <y>390</y>
+ <w>550</w>
+ <h>150</h>
+ </coordinates>
+ <panel_attributes>*ProfileBufferGlobalController*
+--
+-mMaximumBytes
+-mCurrentUnreleasedBytesTotal
+-mCurrentUnreleasedBytes: {pid, unreleased bytes}[ ] sorted by pid
+-mCurrentReleasedBytes
+-mReleasedChunks: {doneTimeStamp, bytes, pid}[ ] sorted by timestamp
+-mDestructionCallback: function&lt;void(pid, rangeStart)&gt;
+--
++Update(pid, unreleased bytes, released: ProfileBufferChunkMetadata[ ])</panel_attributes>
+ <additional_attributes/>
+ </element>
+ <element>
+ <id>Relation</id>
+ <coordinates>
+ <x>320</x>
+ <y>420</y>
+ <w>180</w>
+ <h>40</h>
+ </coordinates>
+ <panel_attributes>lt=-&gt;&gt;&gt;&gt;&gt;
+mController</panel_attributes>
+ <additional_attributes>160.0;20.0;10.0;20.0</additional_attributes>
+ </element>
+ <element>
+ <id>Relation</id>
+ <coordinates>
+ <x>20</x>
+ <y>400</y>
+ <w>110</w>
+ <h>80</h>
+ </coordinates>
+ <panel_attributes>lt=-&gt;&gt;&gt;&gt;&gt;
+_sInstance_</panel_attributes>
+ <additional_attributes>90.0;60.0;10.0;60.0;10.0;10.0;90.0;10.0</additional_attributes>
+ </element>
+ <element>
+ <id>UMLNote</id>
+ <coordinates>
+ <x>480</x>
+ <y>250</y>
+ <w>220</w>
+ <h>120</h>
+ </coordinates>
+ <panel_attributes>The controller is only needed
+if there *are* child processes,
+so we can create it with the first
+child (at which point the tracker
+can register itself with the local
+profiler), and destroyed with the
+last child.
+bg=blue</panel_attributes>
+ <additional_attributes/>
+ </element>
+ <element>
+ <id>Relation</id>
+ <coordinates>
+ <x>690</x>
+ <y>330</y>
+ <w>100</w>
+ <h>80</h>
+ </coordinates>
+ <panel_attributes/>
+ <additional_attributes>10.0;10.0;80.0;60.0</additional_attributes>
+ </element>
+ <element>
+ <id>Relation</id>
+ <coordinates>
+ <x>130</x>
+ <y>460</y>
+ <w>200</w>
+ <h>380</h>
+ </coordinates>
+ <panel_attributes>lt=-&gt;&gt;&gt;&gt;
+mParentChunkManager</panel_attributes>
+ <additional_attributes>180.0;360.0;10.0;360.0;10.0;10.0</additional_attributes>
+ </element>
+ <element>
+ <id>Relation</id>
+ <coordinates>
+ <x>740</x>
+ <y>330</y>
+ <w>350</w>
+ <h>510</h>
+ </coordinates>
+ <panel_attributes>lt=-&gt;&gt;&gt;&gt;
+mLocalBufferChunkManager</panel_attributes>
+ <additional_attributes>10.0;490.0;330.0;490.0;330.0;10.0</additional_attributes>
+ </element>
+ <element>
+ <id>UMLClass</id>
+ <coordinates>
+ <x>470</x>
+ <y>650</y>
+ <w>400</w>
+ <h>100</h>
+ </coordinates>
+ <panel_attributes>*ProfileBufferControlledChunkManager::Update*
+--
+-mUnreleasedBytes
+-mReleasedBytes
+-mOldestDoneTimeStamp
+-mNewReleasedChunks: ChunkMetadata[ ]</panel_attributes>
+ <additional_attributes/>
+ </element>
+ <element>
+ <id>UMLClass</id>
+ <coordinates>
+ <x>470</x>
+ <y>560</y>
+ <w>400</w>
+ <h>60</h>
+ </coordinates>
+ <panel_attributes>*ProfileBufferControlledChunkManager::ChunkMetadata*
+--
+-mDoneTimeStamp
+-mBufferBytes</panel_attributes>
+ <additional_attributes/>
+ </element>
+ <element>
+ <id>Relation</id>
+ <coordinates>
+ <x>670</x>
+ <y>610</y>
+ <w>30</w>
+ <h>60</h>
+ </coordinates>
+ <panel_attributes>lt=&lt;.</panel_attributes>
+ <additional_attributes>10.0;10.0;10.0;40.0</additional_attributes>
+ </element>
+ <element>
+ <id>Relation</id>
+ <coordinates>
+ <x>670</x>
+ <y>740</y>
+ <w>30</w>
+ <h>60</h>
+ </coordinates>
+ <panel_attributes>lt=&lt;.</panel_attributes>
+ <additional_attributes>10.0;10.0;10.0;40.0</additional_attributes>
+ </element>
+ <element>
+ <id>Relation</id>
+ <coordinates>
+ <x>670</x>
+ <y>50</y>
+ <w>130</w>
+ <h>110</h>
+ </coordinates>
+ <panel_attributes>lt=&lt;.</panel_attributes>
+ <additional_attributes>10.0;10.0;110.0;90.0</additional_attributes>
+ </element>
+ <element>
+ <id>Relation</id>
+ <coordinates>
+ <x>360</x>
+ <y>50</y>
+ <w>130</w>
+ <h>110</h>
+ </coordinates>
+ <panel_attributes>lt=&lt;.</panel_attributes>
+ <additional_attributes>110.0;10.0;10.0;90.0</additional_attributes>
+ </element>
+ <element>
+ <id>UMLClass</id>
+ <coordinates>
+ <x>400</x>
+ <y>130</y>
+ <w>350</w>
+ <h>100</h>
+ </coordinates>
+ <panel_attributes>*ProfileBufferChunkManagerUpdate*
+bg=light_gray
+--
+-unreleasedBytes
+-releasedBytes
+-oldestDoneTimeStamp
+-newlyReleasedChunks: ProfileBufferChunkMetadata[ ]</panel_attributes>
+ <additional_attributes/>
+ </element>
+ <element>
+ <id>UMLClass</id>
+ <coordinates>
+ <x>310</x>
+ <y>780</y>
+ <w>440</w>
+ <h>70</h>
+ </coordinates>
+ <panel_attributes>*ProfileBufferControlledChunkManager*
+--
+*/+SetUpdateCallback(function&lt;void(update: Update&amp;&amp;)&gt;)/*
+*/+DestroyChunksAtOrBefore(timeStamp)/*</panel_attributes>
+ <additional_attributes/>
+ </element>
+ <element>
+ <id>Relation</id>
+ <coordinates>
+ <x>480</x>
+ <y>840</y>
+ <w>30</w>
+ <h>80</h>
+ </coordinates>
+ <panel_attributes>lt=&lt;&lt;-</panel_attributes>
+ <additional_attributes>10.0;10.0;10.0;60.0</additional_attributes>
+ </element>
+</diagram>
diff --git a/tools/profiler/docs/index.rst b/tools/profiler/docs/index.rst
new file mode 100644
index 0000000000..53920e7d2f
--- /dev/null
+++ b/tools/profiler/docs/index.rst
@@ -0,0 +1,37 @@
+Gecko Profiler
+==============
+
+The Firefox Profiler is the collection of tools used to profile Firefox. This is backed
+by the Gecko Profiler, which is the primarily C++ component that instruments Gecko. It
+is configurable, and supports a variety of data sources and recording modes. Primarily,
+it is used as a statistical profiler, where the execution of threads that have been
+registered with the profile is paused, and a sample is taken. Generally, this includes
+a stackwalk with combined native stack frame, JavaScript stack frames, and custom stack
+frame labels.
+
+In addition to the sampling, the profiler can collect markers, which are collected
+deterministically (as opposed to statistically, like samples). These include some
+kind of text description, and optionally a payload with more information.
+
+This documentation serves to document the Gecko Profiler and Base Profiler components,
+while the profiler.firefox.com interface is documented at `profiler.firefox.com/docs/ <https://profiler.firefox.com/docs/>`_
+
+.. toctree::
+ :maxdepth: 1
+
+ code-overview
+ buffer
+ instrumenting-javascript
+ instrumenting-rust
+ markers-guide
+ memory
+
+The following areas still need documentation:
+
+ * LUL
+ * Instrumenting Java
+ * Registering Threads
+ * Samples and Stack Walking
+ * Triggering Gecko Profiles in Automation
+ * JS Tracer
+ * Serialization
diff --git a/tools/profiler/docs/instrumenting-javascript.rst b/tools/profiler/docs/instrumenting-javascript.rst
new file mode 100644
index 0000000000..928d94781e
--- /dev/null
+++ b/tools/profiler/docs/instrumenting-javascript.rst
@@ -0,0 +1,60 @@
+Instrumenting JavaScript
+========================
+
+There are multiple ways to use the profiler with JavaScript. There is the "JavaScript"
+profiler feature (via about:profiling), which enables stack walking for JavaScript code.
+This is most likely turned on already for every profiler preset.
+
+In addition, markers can be created to specifically marker an instant in time, or a
+duration. This can be helpful to make sense of a particular piece of the front-end,
+or record events that normally wouldn't show up in samples.
+
+.. note::
+ This guide explains JavaScript markers in depth. To learn more about how to add a
+ marker in C++ or Rust, please take a look at their documentation
+ in :doc:`markers-guide` or :doc:`instrumenting-rust` respectively.
+
+Markers in Browser Chrome
+*************************
+
+If you have access to ChromeUtils, then adding a marker is relatively easily.
+
+.. code-block:: javascript
+
+ // Add an instant marker, representing a single point in time
+ ChromeUtils.addProfilerMarker("MarkerName");
+
+ // Add a duration marker, representing a span of time.
+ const startTime = Cu.now();
+ doWork();
+ ChromeUtils.addProfilerMarker("MarkerName", startTime);
+
+ // Add a duration marker, representing a span of time, with some additional tex
+ const startTime = Cu.now();
+ doWork();
+ ChromeUtils.addProfilerMarker("MarkerName", startTime, "Details about this event");
+
+ // Add an instant marker, with some additional tex
+ const startTime = Cu.now();
+ doWork();
+ ChromeUtils.addProfilerMarker("MarkerName", undefined, "Details about this event");
+
+Markers in Content Code
+***********************
+
+If instrumenting content code, then the `UserTiming`_ API is the best bet.
+:code:`performance.mark` will create an instant marker, and a :code:`performance.measure`
+will create a duration marker. These markers will show up under UserTiming in
+the profiler UI.
+
+.. code-block:: javascript
+
+ // Create an instant marker.
+ performance.mark("InstantMarkerName");
+
+ doWork();
+
+ // Measuring with the performance API will also create duration markers.
+ performance.measure("DurationMarkerName", "InstantMarkerName");
+
+.. _UserTiming: https://developer.mozilla.org/en-US/docs/Web/API/User_Timing_API
diff --git a/tools/profiler/docs/instrumenting-rust.rst b/tools/profiler/docs/instrumenting-rust.rst
new file mode 100644
index 0000000000..0c5021eec1
--- /dev/null
+++ b/tools/profiler/docs/instrumenting-rust.rst
@@ -0,0 +1,433 @@
+Instrumenting Rust
+==================
+
+There are multiple ways to use the profiler with Rust. Native stack sampling already
+includes the Rust frames without special handling. There is the "Native Stacks"
+profiler feature (via about:profiling), which enables stack walking for native code.
+This is most likely turned on already for every profiler presets.
+
+In addition to that, there is a profiler Rust API to instrument the Rust code
+and add more information to the profile data. There are three main functionalities
+to use:
+
+1. Register Rust threads with the profiler, so the profiler can record these threads.
+2. Add stack frame labels to annotate and categorize a part of the stack.
+3. Add markers to specifically mark instants in time, or durations. This can be
+ helpful to make sense of a particular piece of the code, or record events that
+ normally wouldn't show up in samples.
+
+Crate to Include as a Dependency
+--------------------------------
+
+Profiler Rust API is located inside the ``gecko-profiler`` crate. This needs to
+be included in the project dependencies before the following functionalities can
+be used.
+
+To be able to include it, a new dependency entry needs to be added to the project's
+``Cargo.toml`` file like this:
+
+.. code-block:: toml
+
+ [dependencies]
+ gecko-profiler = { path = "../../tools/profiler/rust-api" }
+
+Note that the relative path needs to be updated depending on the project's location
+in mozilla-central.
+
+Registering Threads
+-------------------
+
+To be able to see the threads in the profile data, they need to be registered
+with the profiler. Also, they need to be unregistered when they are exiting.
+It's important to give a unique name to the thread, so they can be filtered easily.
+
+Registering and unregistering a thread is straightforward:
+
+.. code-block:: rust
+
+ // Register it with a given name.
+ gecko_profiler::register_thread("Thread Name");
+ // After doing some work, and right before exiting the thread, unregister it.
+ gecko_profiler::unregister_thread();
+
+For example, here's how to register and unregister a simple thread:
+
+.. code-block:: rust
+
+ let thread_name = "New Thread";
+ std::thread::Builder::new()
+ .name(thread_name.into())
+ .spawn(move || {
+ gecko_profiler::register_thread(thread_name);
+ // DO SOME WORK
+ gecko_profiler::unregister_thread();
+ })
+ .unwrap();
+
+Or with a thread pool:
+
+.. code-block:: rust
+
+ let worker = rayon::ThreadPoolBuilder::new()
+ .thread_name(move |idx| format!("Worker#{}", idx))
+ .start_handler(move |idx| {
+ gecko_profiler::register_thread(&format!("Worker#{}", idx));
+ })
+ .exit_handler(|_idx| {
+ gecko_profiler::unregister_thread();
+ })
+ .build();
+
+.. note::
+ Registering a thread only will not make it appear in the profile data. In
+ addition, it needs to be added to the "Threads" filter in about:profiling.
+ This filter input is a comma-separated list. It matches partial names and
+ supports the wildcard ``*``.
+
+Adding Stack Frame Labels
+-------------------------
+
+Stack frame labels are useful for annotating a part of the call stack with a
+category. The category will appear in the various places on the Firefox Profiler
+analysis page like timeline, call tree tab, flame graph tab, etc.
+
+``gecko_profiler_label!`` macro is used to add a new label frame. The added label
+frame will exist between the call of this macro and the end of the current scope.
+
+Adding a stack frame label:
+
+.. code-block:: rust
+
+ // Marking the stack as "Layout" category, no subcategory provided.
+ gecko_profiler_label!(Layout);
+ // Marking the stack as "JavaScript" category and "Parsing" subcategory.
+ gecko_profiler_label!(JavaScript, Parsing);
+
+ // Or the entire function scope can be marked with a procedural macro. This is
+ // essentially a syntactical sugar and it expands into a function with a
+ // gecko_profiler_label! call at the very start:
+ #[gecko_profiler_fn_label(DOM)]
+ fn foo(bar: u32) -> u32 {
+ bar
+ }
+
+See the list of all profiling categories in the `profiling_categories.yaml`_ file.
+
+Adding Markers
+--------------
+
+Markers are packets of arbitrary data that are added to a profile by the Firefox code,
+usually to indicate something important happening at a point in time, or during an interval of time.
+
+Each marker has a name, a category, some common optional information (timing, backtrace, etc.),
+and an optional payload of a specific type (containing arbitrary data relevant to that type).
+
+.. note::
+ This guide explains Rust markers in depth. To learn more about how to add a
+ marker in C++ or JavaScript, please take a look at their documentation
+ in :doc:`markers-guide` or :doc:`instrumenting-javascript` respectively.
+
+Examples
+^^^^^^^^
+
+Short examples, details are below.
+
+.. code-block:: rust
+
+ // Record a simple marker with the category of Graphics, DisplayListBuilding.
+ gecko_profiler::add_untyped_marker(
+ // Name of the marker as a string.
+ "Marker Name",
+ // Category with an optional sub-category.
+ gecko_profiler_category!(Graphics, DisplayListBuilding),
+ // MarkerOptions that keeps options like marker timing and marker stack.
+ // It will be a point in type by default.
+ Default::default(),
+ );
+
+.. code-block:: rust
+
+ // Create a marker with some additional text information.
+ let info = "info about this marker";
+ gecko_profiler::add_text_marker(
+ // Name of the marker as a string.
+ "Marker Name",
+ // Category with an optional sub-category.
+ gecko_profiler_category!(DOM),
+ // MarkerOptions that keeps options like marker timing and marker stack.
+ MarkerOptions {
+ timing: MarkerTiming::instant_now(),
+ ..Default::default()
+ },
+ // Additional information as a string.
+ info,
+ );
+
+.. code-block:: rust
+
+ // Record a custom marker of type `ExampleNumberMarker` (see definition below).
+ gecko_profiler::add_marker(
+ // Name of the marker as a string.
+ "Marker Name",
+ // Category with an optional sub-category.
+ gecko_profiler_category!(Graphics, DisplayListBuilding),
+ // MarkerOptions that keeps options like marker timing and marker stack.
+ Default::default(),
+ // Marker payload.
+ ExampleNumberMarker { number: 5 },
+ );
+
+ ....
+
+ // Marker type definition. It needs to derive Serialize, Deserialize.
+ #[derive(Serialize, Deserialize, Debug)]
+ pub struct ExampleNumberMarker {
+ number: i32,
+ }
+
+ // Marker payload needs to implement the ProfilerMarker trait.
+ impl gecko_profiler::ProfilerMarker for ExampleNumberMarker {
+ // Unique marker type name.
+ fn marker_type_name() -> &'static str {
+ "example number"
+ }
+ // Data specific to this marker type, serialized to JSON for profiler.firefox.com.
+ fn stream_json_marker_data(&self, json_writer: &mut gecko_profiler::JSONWriter) {
+ json_writer.int_property("number", self.number.into());
+ }
+ // Where and how to display the marker and its data.
+ fn marker_type_display() -> gecko_profiler::MarkerSchema {
+ use gecko_profiler::marker::schema::*;
+ let mut schema = MarkerSchema::new(&[Location::MarkerChart]);
+ schema.set_chart_label("Name: {marker.name}");
+ schema.add_key_label_format("number", "Number", Format::Integer);
+ schema
+ }
+ }
+
+Untyped Markers
+^^^^^^^^^^^^^^^
+
+Untyped markers don't carry any information apart from common marker data:
+Name, category, options.
+
+.. code-block:: rust
+
+ gecko_profiler::add_untyped_marker(
+ // Name of the marker as a string.
+ "Marker Name",
+ // Category with an optional sub-category.
+ gecko_profiler_category!(Graphics, DisplayListBuilding),
+ // MarkerOptions that keeps options like marker timing and marker stack.
+ MarkerOptions {
+ timing: MarkerTiming::instant_now(),
+ ..Default::default()
+ },
+ );
+
+1. Marker name
+ The first argument is the name of this marker. This will be displayed in most places
+ the marker is shown. It can be a literal string, or any dynamic string.
+2. `Profiling category pair`_
+ A category + subcategory pair from the `the list of categories`_.
+ ``gecko_profiler_category!`` macro should be used to create a profiling category
+ pair since it's easier to use, e.g. ``gecko_profiler_category!(JavaScript, Parsing)``.
+ Second parameter can be omitted to use the default subcategory directly.
+ ``gecko_profiler_category!`` macro is encouraged to use, but ``ProfilingCategoryPair``
+ enum can also be used if needed.
+3. `MarkerOptions`_
+ See the options below. It can be omitted if there are no arguments with ``Default::default()``.
+ Some options can also be omitted, ``MarkerOptions {<options>, ..Default::default()}``,
+ with one or more of the following options types:
+
+ * `MarkerTiming`_
+ This specifies an instant or interval of time. It defaults to the current instant if
+ left unspecified. Otherwise use ``MarkerTiming::instant_at(ProfilerTime)`` or
+ ``MarkerTiming::interval(pt1, pt2)``; timestamps are usually captured with
+ ``ProfilerTime::Now()``. It is also possible to record only the start or the end of an
+ interval, pairs of start/end markers will be matched by their name.
+ * `MarkerStack`_
+ By default, markers do not record a "stack" (or "backtrace"). To record a stack at
+ this point, in the most efficient manner, specify ``MarkerStack::Full``. To
+ capture a stack without native frames for reduced overhead, specify
+ ``MarkerStack::NonNative``.
+
+ *Note: Currently, all C++ marker options are not present in the Rust side. They will
+ be added in the future.*
+
+Text Markers
+^^^^^^^^^^^^
+
+Text markers are very common, they carry an extra text as a fourth argument, in addition to
+the marker name. Use the following macro:
+
+.. code-block:: rust
+
+ let info = "info about this marker";
+ gecko_profiler::add_text_marker(
+ // Name of the marker as a string.
+ "Marker Name",
+ // Category with an optional sub-category.
+ gecko_profiler_category!(DOM),
+ // MarkerOptions that keeps options like marker timing and marker stack.
+ MarkerOptions {
+ stack: MarkerStack::Full,
+ ..Default::default()
+ },
+ // Additional information as a string.
+ info,
+ );
+
+As useful as it is, using an expensive ``format!`` operation to generate a complex text
+comes with a variety of issues. It can leak potentially sensitive information
+such as URLs during the profile sharing step. profiler.firefox.com cannot
+access the information programmatically. It won't get the formatting benefits of the
+built-in marker schema. Please consider using a custom marker type to separate and
+better present the data.
+
+Other Typed Markers
+^^^^^^^^^^^^^^^^^^^
+
+From Rust code, a marker of some type ``YourMarker`` (details about type definition follow) can be
+recorded like this:
+
+.. code-block:: rust
+
+ gecko_profiler::add_marker(
+ // Name of the marker as a string.
+ "Marker Name",
+ // Category with an optional sub-category.
+ gecko_profiler_category!(JavaScript),
+ // MarkerOptions that keeps options like marker timing and marker stack.
+ Default::default(),
+ // Marker payload.
+ YourMarker { number: 5, text: "some string".to_string() },
+ );
+
+After the first three common arguments (like in ``gecko_profiler::add_untyped_marker``),
+there is a marker payload struct and it needs to be defined. Let's take a look at
+how to define it.
+
+How to Define New Marker Types
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+Each marker type must be defined once and only once.
+The definition is a Rust ``struct``, it's constructed when recording markers of
+that type in Rust. Each marker struct holds the data that is required for them
+to show in the profiler.firefox.com.
+By convention, the suffix "Marker" is recommended to better distinguish them
+from non-profiler entities in the source.
+
+Each marker payload must derive ``serde::Serialize`` and ``serde::Deserialize``.
+They are also exported from ``gecko-profiler`` crate if a project doesn't have it.
+Each marker payload should include its data as its fields like this:
+
+.. code-block:: rust
+
+ #[derive(Serialize, Deserialize, Debug)]
+ pub struct YourMarker {
+ number: i32,
+ text: String,
+ }
+
+Each marker struct must also implement the `ProfilerMarker`_ trait.
+
+``ProfilerMarker`` trait
+************************
+
+`ProfilerMarker`_ trait must be implemented for all marker types. Its methods are
+similar to C++ counterparts, please refer to :ref:`the C++ markers guide to learn
+more about them <how-to-define-new-marker-types>`. It includes three methods that
+needs to be implemented:
+
+1. ``marker_type_name() -> &'static str``:
+ A marker type must have a unique name, it is used to keep track of the type of
+ markers in the profiler storage, and to identify them uniquely on profiler.firefox.com.
+ (It does not need to be the same as the struct's name.)
+
+ E.g.:
+
+ .. code-block:: rust
+
+ fn marker_type_name() -> &'static str {
+ "your marker type"
+ }
+
+2. ``stream_json_marker_data(&self, json_writer: &mut JSONWriter)``
+ All markers of any type have some common data: A name, a category, options like
+ timing, etc. as previously explained.
+
+ In addition, a certain marker type may carry zero of more arbitrary pieces of
+ information, and they are always the same for all markers of that type.
+
+ These are defined in a special static member function ``stream_json_marker_data``.
+
+ It's a member method and takes a ``&mut JSONWriter`` as a parameter,
+ it will be used to stream the data as JSON, to later be read by
+ profiler.firefox.com. See `JSONWriter object and its methods`_.
+
+ E.g.:
+
+ .. code-block:: rust
+
+ fn stream_json_marker_data(&self, json_writer: &mut JSONWriter) {
+ json_writer.int_property("number", self.number.into());
+ json_writer.string_property("text", &self.text);
+ }
+
+3. ``marker_type_display() -> schema::MarkerSchema``
+ Now that how to stream type-specific data (from Firefox to
+ profiler.firefox.com) is defined, it needs to be described where and how this
+ data will be displayed on profiler.firefox.com.
+
+ The static member function ``marker_type_display`` returns an opaque ``MarkerSchema``
+ object, which will be forwarded to profiler.firefox.com.
+
+ See the `MarkerSchema::Location enumeration for the full list`_. Also see the
+ `MarkerSchema struct for its possible methods`_.
+
+ E.g.:
+
+ .. code-block:: rust
+
+ fn marker_type_display() -> schema::MarkerSchema {
+ // Import MarkerSchema related types for easier use.
+ use crate::marker::schema::*;
+ // Create a MarkerSchema struct with a list of locations provided.
+ // One or more constructor arguments determine where this marker will be displayed in
+ // the profiler.firefox.com UI.
+ let mut schema = MarkerSchema::new(&[Location::MarkerChart]);
+
+ // Some labels can optionally be specified, to display certain information in different
+ // locations: set_chart_label, set_tooltip_label, and set_table_label``; or
+ // set_all_labels to define all of them the same way.
+ schema.set_all_labels("{marker.name} - {marker.data.number});
+
+ // Next, define the main display of marker data, which will appear in the Marker Chart
+ // tooltips and the Marker Table sidebar.
+ schema.add_key_label_format("number", "Number", Format::Number);
+ schema.add_key_label_format("text", "Text", Format::String);
+ schema.add_static_label_value("Help", "This is my own marker type");
+
+ // Lastly, return the created schema.
+ schema
+ }
+
+ Note that the strings in ``set_all_labels`` may refer to marker data within braces:
+
+ * ``{marker.name}``: Marker name.
+ * ``{marker.data.X}``: Type-specific data, as streamed with property name "X"
+ from ``stream_json_marker_data``.
+
+ :ref:`See the C++ markers guide for more details about it <marker-type-display-schema>`.
+
+.. _profiling_categories.yaml: https://searchfox.org/mozilla-central/source/mozglue/baseprofiler/build/profiling_categories.yaml
+.. _Profiling category pair: https://searchfox.org/mozilla-central/define?q=gecko_profiler::gecko_bindings::profiling_categories::ProfilingCategoryPair
+.. _the list of categories: https://searchfox.org/mozilla-central/source/mozglue/baseprofiler/build/profiling_categories.yaml
+.. _MarkerOptions: https://searchfox.org/mozilla-central/define?q=gecko_profiler::marker::options::MarkerOptions
+.. _MarkerTiming: https://searchfox.org/mozilla-central/define?q=gecko_profiler::marker::options::MarkerTiming
+.. _MarkerStack: https://searchfox.org/mozilla-central/define?q=gecko_profiler::marker::options::MarkerStack
+.. _ProfilerMarker: https://searchfox.org/mozilla-central/define?q=gecko_profiler::marker::ProfilerMarker
+.. _MarkerSchema::Location enumeration for the full list: https://searchfox.org/mozilla-central/define?q=T_mozilla%3A%3AMarkerSchema%3A%3ALocation
+.. _JSONWriter object and its methods: https://searchfox.org/mozilla-central/define?q=gecko_profiler::json_writer::JSONWriter
+.. _MarkerSchema struct for its possible methods: https://searchfox.org/mozilla-central/define?q=gecko_profiler::marker::schema::MarkerSchema
diff --git a/tools/profiler/docs/markers-guide.rst b/tools/profiler/docs/markers-guide.rst
new file mode 100644
index 0000000000..82fe6f3cda
--- /dev/null
+++ b/tools/profiler/docs/markers-guide.rst
@@ -0,0 +1,485 @@
+Markers
+=======
+
+Markers are packets of arbitrary data that are added to a profile by the Firefox code, usually to
+indicate something important happening at a point in time, or during an interval of time.
+
+Each marker has a name, a category, some common optional information (timing, backtrace, etc.),
+and an optional payload of a specific type (containing arbitrary data relevant to that type).
+
+.. note::
+ This guide explains C++ markers in depth. To learn more about how to add a
+ marker in JavaScript or Rust, please take a look at their documentation
+ in :doc:`instrumenting-javascript` or :doc:`instrumenting-rust` respectively.
+
+Example
+-------
+
+Short example, details below.
+
+Note: Most marker-related identifiers are in the ``mozilla`` namespace, to be added where necessary.
+
+.. code-block:: c++
+
+ // Record a simple marker with the category of DOM.
+ PROFILER_MARKER_UNTYPED("Marker Name", DOM);
+
+ // Create a marker with some additional text information. (Be wary of printf!)
+ PROFILER_MARKER_TEXT("Marker Name", JS, MarkerOptions{}, "Additional text information.");
+
+ // Record a custom marker of type `ExampleNumberMarker` (see definition below).
+ PROFILER_MARKER("Number", OTHER, MarkerOptions{}, ExampleNumberMarker, 42);
+
+.. code-block:: c++
+
+ // Marker type definition.
+ struct ExampleNumberMarker {
+ // Unique marker type name.
+ static constexpr Span<const char> MarkerTypeName() { return MakeStringSpan("number"); }
+ // Data specific to this marker type, serialized to JSON for profiler.firefox.com.
+ static void StreamJSONMarkerData(SpliceableJSONWriter& aWriter, int aNumber) {
+ aWriter.IntProperty("number", aNumber);
+ }
+ // Where and how to display the marker and its data.
+ static MarkerSchema MarkerTypeDisplay() {
+ using MS = MarkerSchema;
+ MS schema(MS::Location::MarkerChart, MS::Location::MarkerTable);
+ schema.SetChartLabel("Number: {marker.data.number}");
+ schema.AddKeyLabelFormat("number", "Number", MS::Format::Number);
+ return schema;
+ }
+ };
+
+
+How to Record Markers
+---------------------
+
+Header to Include
+^^^^^^^^^^^^^^^^^
+
+If the compilation unit only defines and records untyped, text, and/or its own markers, include
+`the main profiler markers header <https://searchfox.org/mozilla-central/source/tools/profiler/public/ProfilerMarkers.h>`_:
+
+.. code-block:: c++
+
+ #include "mozilla/ProfilerMarkers.h"
+
+If it also records one of the other common markers defined in
+`ProfilerMarkerTypes.h <https://searchfox.org/mozilla-central/source/tools/profiler/public/ProfilerMarkerTypes.h>`_,
+include that one instead:
+
+.. code-block:: c++
+
+ #include "mozilla/ProfilerMarkerTypes.h"
+
+And if it uses any other profiler functions (e.g., labels), use
+`the main Gecko Profiler header <https://searchfox.org/mozilla-central/source/tools/profiler/public/GeckoProfiler.h>`_
+instead:
+
+.. code-block:: c++
+
+ #include "GeckoProfiler.h"
+
+The above works from source files that end up in libxul, which is true for the majority
+of Firefox source code. But some files live outside of libxul, such as mfbt, in which
+case the advice is the same but the equivalent headers are from the Base Profiler instead:
+
+.. code-block:: c++
+
+ #include "mozilla/BaseProfilerMarkers.h" // Only own/untyped/text markers
+ #include "mozilla/BaseProfilerMarkerTypes.h" // Only common markers
+ #include "BaseProfiler.h" // Markers and other profiler functions
+
+Untyped Markers
+^^^^^^^^^^^^^^^
+
+Untyped markers don't carry any information apart from common marker data:
+Name, category, options.
+
+.. code-block:: c++
+
+ PROFILER_MARKER_UNTYPED(
+ // Name, and category pair.
+ "Marker Name", OTHER,
+ // Marker options, may be omitted if all defaults are acceptable.
+ MarkerOptions(MarkerStack::Capture(), ...));
+
+``PROFILER_MARKER_UNTYPED`` is a macro that simplifies the use of the main
+``profiler_add_marker`` function, by adding the appropriate namespaces, and a surrounding
+``#ifdef MOZ_GECKO_PROFILER`` guard.
+
+1. Marker name
+ The first argument is the name of this marker. This will be displayed in most places
+ the marker is shown. It can be a literal C string, or any dynamic string object.
+2. `Category pair name <https://searchfox.org/mozilla-central/define?q=M_174bb0de187ee7d9>`_
+ Choose a category + subcategory from the `the list of categories <https://searchfox.org/mozilla-central/define?q=M_174bb0de187ee7d9>`_.
+ This is the second parameter of each ``SUBCATEGORY`` line, for instance ``LAYOUT_Reflow``.
+ (Internally, this is really a `MarkerCategory <https://searchfox.org/mozilla-central/define?q=T_mozilla%3A%3AMarkerCategory>`_
+ object, in case you need to construct it elsewhere.)
+3. `MarkerOptions <https://searchfox.org/mozilla-central/define?q=T_mozilla%3A%3AMarkerOptions>`_
+ See the options below. It can be omitted if there are no other arguments, ``{}``, or
+ ``MarkerOptions()`` (no specified options); only one of the following option types
+ alone; or ``MarkerOptions(...)`` with one or more of the following options types:
+
+ * `MarkerThreadId <https://searchfox.org/mozilla-central/define?q=T_mozilla%3A%3AMarkerThreadId>`_
+ Rarely used, as it defaults to the current thread. Otherwise it specifies the target
+ "thread id" (aka "track") where the marker should appear; This may be useful when
+ referring to something that happened on another thread (use ``profiler_current_thread_id()``
+ from the original thread to get its id); or for some important markers, they may be
+ sent to the "main thread", which can be specified with ``MarkerThreadId::MainThread()``.
+ * `MarkerTiming <https://searchfox.org/mozilla-central/define?q=T_mozilla%3A%3AMarkerTiming>`_
+ This specifies an instant or interval of time. It defaults to the current instant if
+ left unspecified. Otherwise use ``MarkerTiming::InstantAt(timestamp)`` or
+ ``MarkerTiming::Interval(ts1, ts2)``; timestamps are usually captured with
+ ``TimeStamp::Now()``. It is also possible to record only the start or the end of an
+ interval, pairs of start/end markers will be matched by their name. *Note: The
+ upcoming "marker sets" feature will make this pairing more reliable, and also
+ allow more than two markers to be connected*.
+ * `MarkerStack <https://searchfox.org/mozilla-central/define?q=T_mozilla%3A%3AMarkerStack>`_
+ By default, markers do not record a "stack" (or "backtrace"). To record a stack at
+ this point, in the most efficient manner, specify ``MarkerStack::Capture()``. To
+ record a previously captured stack, first store a stack into a
+ ``UniquePtr<ProfileChunkedBuffer>`` with ``profiler_capture_backtrace()``, then pass
+ it to the marker with ``MarkerStack::TakeBacktrace(std::move(stack))``.
+ * `MarkerInnerWindowId <https://searchfox.org/mozilla-central/define?q=T_mozilla%3A%3AMarkerInnerWindowId>`_
+ If you have access to an "inner window id", consider specifying it as an option, to
+ help profiler.firefox.com to classify them by tab.
+
+Text Markers
+^^^^^^^^^^^^
+
+Text markers are very common, they carry an extra text as a fourth argument, in addition to
+the marker name. Use the following macro:
+
+.. code-block:: c++
+
+ PROFILER_MARKER_TEXT(
+ // Name, category pair, options.
+ "Marker Name", OTHER, {},
+ // Text string.
+ "Here are some more details."
+ );
+
+As useful as it is, using an expensive ``printf`` operation to generate a complex text
+comes with a variety of issues string. It can leak potentially sensitive information
+such as URLs can be leaked during the profile sharing step. profiler.firefox.com cannot
+access the information programmatically. It won't get the formatting benefits of the
+built-in marker schema. Please consider using a custom marker type to separate and
+better present the data.
+
+Other Typed Markers
+^^^^^^^^^^^^^^^^^^^
+
+From C++ code, a marker of some type ``YourMarker`` (details about type definition follow) can be
+recorded like this:
+
+.. code-block:: c++
+
+ PROFILER_MARKER(
+ "YourMarker name", OTHER,
+ MarkerOptions(MarkerTiming::IntervalUntilNowFrom(someStartTimestamp),
+ MarkerInnerWindowId(innerWindowId))),
+ YourMarker, "some string", 12345, "http://example.com", someTimeStamp);
+
+After the first three common arguments (like in ``PROFILER_MARKER_UNTYPED``), there are:
+
+4. The marker type, which is the name of the C++ ``struct`` that defines that type.
+5. A variadic list of type-specific argument. They must match the number of, and must
+ be convertible to, ``StreamJSONMarkerData`` parameters as specified in the marker type definition.
+
+"Auto" Scoped Interval Markers
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+To capture time intervals around some important operations, it is common to store a timestamp, do the work,
+and then record a marker, e.g.:
+
+.. code-block:: c++
+
+ void DoTimedWork() {
+ TimeStamp start = TimeStamp::Now();
+ DoWork();
+ PROFILER_MARKER_TEXT("Timed work", OTHER, MarkerTiming::IntervalUntilNowFrom(start), "Details");
+ }
+
+`RAII <https://en.cppreference.com/w/cpp/language/raii>`_ objects automate this, by recording the time
+when the object is constructed, and later recording the marker when the object is destroyed at the end
+of its C++ scope.
+This is especially useful if there are multiple scope exit points.
+
+``AUTO_PROFILER_MARKER_TEXT`` is `the only one implemented <https://searchfox.org/mozilla-central/define?q=M_ac7b392646edf5a5>`_ at this time.
+
+.. code-block:: c++
+
+ void MaybeDoTimedWork(bool aDoIt) {
+ AUTO_PROFILER_MARKER_TEXT("Timed work", OTHER, "Details");
+ if (!aDoIt) { /* Marker recorded here... */ return; }
+ DoWork();
+ /* ... or here. */
+ }
+
+Note that these RAII objects only record one marker. In some situation, a very long
+operation could be missed if it hasn't completed by the end of the profiling session.
+In this case, consider recording two distinct markers, using
+``MarkerTiming::IntervalStart()`` and ``MarkerTiming::IntervalEnd()``.
+
+Where to Define New Marker Types
+--------------------------------
+
+The first step is to determine the location of the marker type definition:
+
+* If this type is only used in one function, or a component, it can be defined in a
+ local common place relative to its use.
+* For a more common type that could be used from multiple locations:
+
+ * If there is no dependency on XUL, it can be defined in the Base Profiler, which can
+ be used in most locations in the codebase:
+ `mozglue/baseprofiler/public/BaseProfilerMarkerTypes.h <https://searchfox.org/mozilla-central/source/mozglue/baseprofiler/public/BaseProfilerMarkerTypes.h>`__
+
+ * However, if there is a XUL dependency, then it needs to be defined in the Gecko Profiler:
+ `tools/profiler/public/ProfilerMarkerTypes.h <https://searchfox.org/mozilla-central/source/tools/profiler/public/ProfilerMarkerTypes.h>`__
+
+.. _how-to-define-new-marker-types:
+
+How to Define New Marker Types
+------------------------------
+
+Each marker type must be defined once and only once.
+The definition is a C++ ``struct``, its identifier is used when recording
+markers of that type in C++.
+By convention, the suffix "Marker" is recommended to better distinguish them
+from non-profiler entities in the source.
+
+.. code-block:: c++
+
+ struct YourMarker {
+
+Marker Type Name
+^^^^^^^^^^^^^^^^
+
+A marker type must have a unique name, it is used to keep track of the type of
+markers in the profiler storage, and to identify them uniquely on profiler.firefox.com.
+(It does not need to be the same as the ``struct``'s name.)
+
+This name is defined in a special static member function ``MarkerTypeName``:
+
+.. code-block:: c++
+
+ // …
+ static constexpr Span<const char> MarkerTypeName() {
+ return MakeStringSpan("YourMarker");
+ }
+
+Marker Type Data
+^^^^^^^^^^^^^^^^
+
+All markers of any type have some common data: A name, a category, options like
+timing, etc. as previously explained.
+
+In addition, a certain marker type may carry zero of more arbitrary pieces of
+information, and they are always the same for all markers of that type.
+
+These are defined in a special static member function ``StreamJSONMarkerData``.
+
+The first function parameters is always ``SpliceableJSONWriter& aWriter``,
+it will be used to stream the data as JSON, to later be read by
+profiler.firefox.com.
+
+.. code-block:: c++
+
+ // …
+ static void StreamJSONMarkerData(SpliceableJSONWriter& aWriter,
+
+The following function parameters is how the data is received as C++ objects
+from the call sites.
+
+* Most C/C++ `POD (Plain Old Data) <https://en.cppreference.com/w/cpp/named_req/PODType>`_
+ and `trivially-copyable <https://en.cppreference.com/w/cpp/named_req/TriviallyCopyable>`_
+ types should work as-is, including ``TimeStamp``.
+* Character strings should be passed using ``const ProfilerString8View&`` (this handles
+ literal strings, and various ``std::string`` and ``nsCString`` types, and spans with or
+ without null terminator). Use ``const ProfilerString16View&`` for 16-bit strings such as
+ ``nsString``.
+* Other types can be used if they define specializations for ``ProfileBufferEntryWriter::Serializer``
+ and ``ProfileBufferEntryReader::Deserializer``. You should rarely need to define new
+ ones, but if needed see how existing specializations are written, or contact the
+ `perf-tools team for help <https://chat.mozilla.org/#/room/#profiler:mozilla.org>`_.
+
+Passing by value or by reference-to-const is recommended, because arguments are serialized
+in binary form (i.e., there are no optimizable ``move`` operations).
+
+For example, here's how to handle a string, a 64-bit number, another string, and
+a timestamp:
+
+.. code-block:: c++
+
+ // …
+ const ProfilerString8View& aString,
+ const int64_t aBytes,
+ const ProfilerString8View& aURL,
+ const TimeStamp& aTime) {
+
+Then the body of the function turns these parameters into a JSON stream.
+
+When this function is called, the writer has just started a JSON object, so
+everything that is written should be a named object property. Use
+``SpliceableJSONWriter`` functions, in most cases ``...Property`` functions
+from its parent class ``JSONWriter``: ``NullProperty``, ``BoolProperty``,
+``IntProperty``, ``DoubleProperty``, ``StringProperty``. (Other nested JSON
+types like arrays or objects are not supported by the profiler.)
+
+As a special case, ``TimeStamps`` must be streamed using ``aWriter.TimeProperty(timestamp)``.
+
+The property names will be used to identify where each piece of data is stored and
+how it should be displayed on profiler.firefox.com (see next section).
+
+Here's how the above functions parameters could be streamed:
+
+.. code-block:: c++
+
+ // …
+ aWriter.StringProperty("myString", aString);
+ aWriter.IntProperty("myBytes", aBytes);
+ aWriter.StringProperty("myURL", aURL);
+ aWriter.TimeProperty("myTime", aTime);
+ }
+
+.. _marker-type-display-schema:
+
+Marker Type Display Schema
+^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+Now that we have defined how to stream type-specific data (from Firefox to
+profiler.firefox.com), we need to describe where and how this data will be
+displayed on profiler.firefox.com.
+
+The static member function ``MarkerTypeDisplay`` returns an opaque ``MarkerSchema``
+object, which will be forwarded to profiler.firefox.com.
+
+.. code-block:: c++
+
+ // …
+ static MarkerSchema MarkerTypeDisplay() {
+
+The ``MarkerSchema`` type will be used repeatedly, so for convenience we can define
+a local type alias:
+
+.. code-block:: c++
+
+ // …
+ using MS = MarkerSchema;
+
+First, we construct the ``MarkerSchema`` object to be returned at the end.
+
+One or more constructor arguments determine where this marker will be displayed in
+the profiler.firefox.com UI. See the `MarkerSchema::Location enumeration for the
+full list <https://searchfox.org/mozilla-central/define?q=T_mozilla%3A%3AMarkerSchema%3A%3ALocation>`_.
+
+Here is the most common set of locations, showing markers of that type in both the
+Marker Chart and the Marker Table panels:
+
+.. code-block:: c++
+
+ // …
+ MS schema(MS::Location::MarkerChart, MS::Location::MarkerTable);
+
+Some labels can optionally be specified, to display certain information in different
+locations: ``SetChartLabel``, ``SetTooltipLabel``, and ``SetTableLabel``; or
+``SetAllLabels`` to define all of them the same way.
+
+The arguments is a string that may refer to marker data within braces:
+
+* ``{marker.name}``: Marker name.
+* ``{marker.data.X}``: Type-specific data, as streamed with property name "X" from ``StreamJSONMarkerData`` (e.g., ``aWriter.IntProperty("X", aNumber);``
+
+For example, here's how to set the Marker Chart label to show the marker name and the
+``myBytes`` number of bytes:
+
+.. code-block:: c++
+
+ // …
+ schema.SetChartLabel("{marker.name} – {marker.data.myBytes}");
+
+profiler.firefox.com will apply the label with the data in a consistent manner. For
+example, with this label definition, it could display marker information like the
+following in the Firefox Profiler's Marker Chart:
+
+ * "Marker Name – 10B"
+ * "Marker Name – 25.204KB"
+ * "Marker Name – 512.54MB"
+
+For implementation details on this processing, see `src/profiler-logic/marker-schema.js <https://github.com/firefox-devtools/profiler/blob/main/src/profile-logic/marker-schema.js>`_
+in the profiler's front-end.
+
+Next, define the main display of marker data, which will appear in the Marker
+Chart tooltips and the Marker Table sidebar.
+
+Each row may either be:
+
+* A dynamic key-value pair, using one of the ``MarkerSchema::AddKey...`` functions. Each function is given:
+
+ * Key: Element property name as streamed in ``StreamJSONMarkerData``.
+ * Label: Optional prefix. Defaults to the key name.
+ * Format: How to format the data element value, see `MarkerSchema::Format for details <https://searchfox.org/mozilla-central/define?q=T_mozilla%3A%3AMarkerSchema%3A%3AFormat>`_.
+ * Searchable: Optional boolean, indicates if the value is used in searches, defaults to false.
+
+* Or a fixed label and value strings, using ``MarkerSchema::AddStaticLabelValue``.
+
+.. code-block:: c++
+
+ // …
+ schema.AddKeyLabelFormatSearchable(
+ "myString", "My String", MS::Format::String, true);
+ schema.AddKeyLabelFormat(
+ "myBytes", "My Bytes", MS::Format::Bytes);
+ schema.AddKeyLabelFormat(
+ "myUrl", "My URL", MS::Format::Url);
+ schema.AddKeyLabelFormat(
+ "myTime", "Event time", MS::Format::Time);
+
+Finally the ``schema`` object is returned from the function:
+
+.. code-block:: c++
+
+ // …
+ return schema;
+ }
+
+Any other ``struct`` member function is ignored. There could be utility functions used by the above
+compulsory functions, to make the code clearer.
+
+And that is the end of the marker definition ``struct``.
+
+.. code-block:: c++
+
+ // …
+ };
+
+Performance Considerations
+--------------------------
+
+During profiling, it is best to reduce the amount of work spent doing profiler
+operations, as they can influence the performance of the code that you want to profile.
+
+Whenever possible, consider passing simple types to marker functions, such that
+``StreamJSONMarkerData`` will do the minimum amount of work necessary to serialize
+the marker type-specific arguments to its internal buffer representation. POD types
+(numbers) and strings are the easiest and cheapest to serialize. Look at the
+corresponding ``ProfileBufferEntryWriter::Serializer`` specializations if you
+want to better understand the work done.
+
+Avoid doing expensive operations when recording markers. E.g.: ``printf`` of
+different things into a string, or complex computations; instead pass the
+``printf``/computation arguments straight through to the marker function, so that
+``StreamJSONMarkerData`` can do the expensive work at the end of the profiling session.
+
+Marker Architecture Description
+-------------------------------
+
+The above sections should give all the information needed for adding your own marker
+types. However, if you are wanting to work on the marker architecture itself, this
+section will describe how the system works.
+
+TODO:
+ * Briefly describe the buffer and serialization.
+ * Describe the template strategy for generating marker types
+ * Describe the serialization and link to profiler front-end docs on marker processing (if they exist)
diff --git a/tools/profiler/docs/memory.rst b/tools/profiler/docs/memory.rst
new file mode 100644
index 0000000000..347a91f9e7
--- /dev/null
+++ b/tools/profiler/docs/memory.rst
@@ -0,0 +1,46 @@
+Profiling Memory
+================
+
+Sampling stacks from native allocations
+---------------------------------------
+
+The profiler can sample allocations and de-allocations from malloc using the
+"Native Allocations" feature. This can be enabled by going to `about:profiling` and
+enabling the "Native Allocations" checkbox. It is only available in Nightly, as it
+uses a technique of hooking into malloc that could be a little more risky to apply to
+the broader population of Firefox users.
+
+This implementation is located in: `tools/profiler/core/memory_hooks.cpp
+<https://searchfox.org/mozilla-central/source/tools/profiler/core/memory_hooks.cpp>`_
+
+It works by hooking into all of the malloc calls. When the profiler is running, it
+performs a `Bernoulli trial`_, that will pass for a given probability of per-byte
+allocated. What this means is that larger allocations have a higher chance of being
+recorded compared to smaller allocations. Currently, there is no way to configure
+the per-byte probability. This means that sampled allocation sizes will be closer
+to the actual allocated bytes.
+
+This infrastructure is quite similar to DMD, but with the additional motiviations of
+making it easy to turn on and use with the profiler. The overhead is quite high,
+especially on systems with more expensive stack walking, like Linux. Turning off
+thee "Native Stacks" feature can help lower overhead, but will give less information.
+
+For more information on analyzing these profiles, see the `Firefox Profiler docs`_.
+
+Memory counters
+---------------
+
+Similar to the Native Allocations feature, memory counters use the malloc memory hook
+that is only available in Nightly. When it's available, the memory counters are always
+turned on. This is a lightweight way to count in a very granular fashion how much
+memory is being allocated and deallocated during the profiling session.
+
+This information is then visualized in the `Firefox Profiler memory track`_.
+
+This feature uses the `Profiler Counters`_, which can be used to create other types
+of cheap counting instrumentation.
+
+.. _Bernoulli trial: https://en.wikipedia.org/wiki/Bernoulli_trial
+.. _Firefox Profiler docs: https://profiler.firefox.com/docs/#/./memory-allocations
+.. _Firefox Profiler memory track: https://profiler.firefox.com/docs/#/./memory-allocations?id=memory-track
+.. _Profiler Counters: https://searchfox.org/mozilla-central/source/tools/profiler/public/ProfilerCounts.h
diff --git a/tools/profiler/docs/profilerclasses-20220913.png b/tools/profiler/docs/profilerclasses-20220913.png
new file mode 100644
index 0000000000..a5ba265407
--- /dev/null
+++ b/tools/profiler/docs/profilerclasses-20220913.png
Binary files differ
diff --git a/tools/profiler/docs/profilerclasses.umlet.uxf b/tools/profiler/docs/profilerclasses.umlet.uxf
new file mode 100644
index 0000000000..c807853401
--- /dev/null
+++ b/tools/profiler/docs/profilerclasses.umlet.uxf
@@ -0,0 +1,811 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<diagram program="umlet" version="15.0.0">
+ <zoom_level>10</zoom_level>
+ <element>
+ <id>UMLClass</id>
+ <coordinates>
+ <x>80</x>
+ <y>370</y>
+ <w>340</w>
+ <h>190</h>
+ </coordinates>
+ <panel_attributes>ThreadInfo
+--
+-mName: nsCString
+-mRegisterTime: TimeStamp
+-mThreadId: int
+-mIsMainThread: bool
+--
+NS_INLINE_DECL_THREADSAFE_REFCOUNTING
++Name()
++RegisterTime()
++ThreadId()
++IsMainThread()
+</panel_attributes>
+ <additional_attributes/>
+ </element>
+ <element>
+ <id>UMLClass</id>
+ <coordinates>
+ <x>470</x>
+ <y>300</y>
+ <w>600</w>
+ <h>260</h>
+ </coordinates>
+ <panel_attributes>RacyRegisteredThread
+--
+-mProfilingStackOwner: NotNull&lt;RefPtr&lt;ProfilingStackOwner&gt;&gt;
+-mThreadId
+-mSleep: Atomic&lt;int&gt; /* AWAKE, SLEEPING_NOT_OBSERVED, SLEEPING_OBSERVED */
+-mIsBeingProfiled: Atomic&lt;bool, Relaxed&gt;
+--
++SetIsBeingProfiled()
++IsBeingProfiled()
++ReinitializeOnResume()
++CanDuplicateLastSampleDueToSleep()
++SetSleeping()
++SetAwake()
++IsSleeping()
++ThreadId()
++ProfilingStack()
++ProfilingStackOwner()</panel_attributes>
+ <additional_attributes/>
+ </element>
+ <element>
+ <id>UMLClass</id>
+ <coordinates>
+ <x>470</x>
+ <y>650</y>
+ <w>350</w>
+ <h>360</h>
+ </coordinates>
+ <panel_attributes>RegisteredThread
+--
+-mPlatformData: UniquePlatformData
+-mStackTop: const void*
+-mThread: nsCOMPtr&lt;nsIThread&gt;
+-mContext: JSContext*
+-mJSSampling: enum {INACTIVE, ACTIVE_REQUESTED, ACTIVE, INACTIVE_REQUESTED}
+-mmJSFlags: uint32_t
+--
++RacyRegisteredThread()
++GetPlatformData()
++StackTop()
++GetRunningEventDelay()
++SizeOfIncludingThis()
++SetJSContext()
++ClearJSContext()
++GetJSContext()
++Info(): RefPtr&lt;ThreadInfo&gt;
++GetEventTarget(): nsCOMPtr&lt;nsIEventTarget&gt;
++ResetMainThread(nsIThread*)
++StartJSSampling()
++StopJSSampling()
++PollJSSampling()
+</panel_attributes>
+ <additional_attributes/>
+ </element>
+ <element>
+ <id>Relation</id>
+ <coordinates>
+ <x>750</x>
+ <y>550</y>
+ <w>180</w>
+ <h>120</h>
+ </coordinates>
+ <panel_attributes>lt=&lt;&lt;&lt;&lt;&lt;-
+mRacyRegisteredThread</panel_attributes>
+ <additional_attributes>10.0;100.0;10.0;10.0</additional_attributes>
+ </element>
+ <element>
+ <id>Relation</id>
+ <coordinates>
+ <x>290</x>
+ <y>550</y>
+ <w>230</w>
+ <h>120</h>
+ </coordinates>
+ <panel_attributes>lt=&lt;&lt;&lt;&lt;-
+mThreadInfo: RefPtr&lt;&gt;</panel_attributes>
+ <additional_attributes>210.0;100.0;10.0;10.0</additional_attributes>
+ </element>
+ <element>
+ <id>UMLClass</id>
+ <coordinates>
+ <x>70</x>
+ <y>660</y>
+ <w>340</w>
+ <h>190</h>
+ </coordinates>
+ <panel_attributes>PageInformation
+--
+-mBrowsingContextID: uint64_t
+-mInnerWindowID: uint64_t
+-mUrl: nsCString
+-mEmbedderInnerWindowID: uint64_t
+--
+NS_INLINE_DECL_THREADSAFE_REFCOUNTING
++SizeOfIncludingThis(MallocSizeOf)
++Equals(PageInformation*)
++StreamJSON(SpliceableJSONWriter&amp;)
++InnerWindowID()
++BrowsingContextID()
++Url()
++EmbedderInnerWindowID()
++BufferPositionWhenUnregistered(): Maybe&lt;uint64_t&gt;
++NotifyUnregistered(aBufferPosition: uint64_t)</panel_attributes>
+ <additional_attributes/>
+ </element>
+ <element>
+ <id>UMLClass</id>
+ <coordinates>
+ <x>760</x>
+ <y>1890</y>
+ <w>570</w>
+ <h>120</h>
+ </coordinates>
+ <panel_attributes>ProfilerBacktrace
+--
+-mName: UniqueFreePtr&lt;char&gt;
+-mThreadId: int
+-mProfileChunkedBuffer: UniquePtr&lt;ProfileChunkedBuffer&gt;
+-mProfileBuffer: UniquePtr&lt;ProfileBuffer&gt;
+--
++StreamJSON(SpliceableJSONWriter&amp;, aProcessStartTime: TimeStamp, UniqueStacks&amp;)
+</panel_attributes>
+ <additional_attributes/>
+ </element>
+ <element>
+ <id>UMLClass</id>
+ <coordinates>
+ <x>20</x>
+ <y>2140</y>
+ <w>620</w>
+ <h>580</h>
+ </coordinates>
+ <panel_attributes>ProfileChunkedBuffer
+--
+-mMutex: BaseProfilerMaybeMutex
+-mChunkManager: ProfileBufferChunkManager*
+-mOwnedChunkManager: UniquePtr&lt;ProfileBufferChunkManager&gt;
+-mCurrentChunk: UniquePtr&lt;ProfileBufferChunk&gt;
+-mNextChunks: UniquePtr&lt;ProfileBufferChunk&gt;
+-mRequestedChunkHolder: RefPtr&lt;RequestedChunkRefCountedHolder&gt;
+-mNextChunkRangeStart: ProfileBufferIndex
+-mRangeStart: Atomic&lt;ProfileBufferIndex, ReleaseAcquire&gt;
+-mRangeEnd: ProfileBufferIndex
+-mPushedBlockCount: uint64_t
+-mClearedBlockCount: Atomic&lt;uint64_t, ReleaseAcquire&gt;
+--
++Byte = ProfileBufferChunk::Byte
++Length = ProfileBufferChunk::Length
++IsThreadSafe()
++IsInSession()
++ResetChunkManager()
++SetChunkManager()
++Clear()
++BufferLength(): Maybe&lt;size_t&gt;
++SizeOfExcludingThis(MallocSizeOf)
++SizeOfIncludingThis(MallocSizeOf)
++GetState()
++IsThreadSafeAndLockedOnCurrentThread(): bool
++LockAndRun(Callback&amp;&amp;)
++ReserveAndPut(CallbackEntryBytes&amp;&amp;, Callback&lt;auto(Maybe&lt;ProfileBufferEntryWriter&gt;&amp;)&gt;&amp;&amp;)
++Put(aEntryBytes: Length, Callback&lt;auto(Maybe&lt;ProfileBufferEntryWriter&gt;&amp;)&gt;&amp;&amp;)
++PutFrom(const void*, Length)
++PutObjects(const Ts&amp;...)
++PutObject(const T&amp;)
++GetAllChunks()
++Read(Callback&lt;void(Reader&amp;)&gt;&amp;&amp;): bool
++ReadEach(Callback&lt;void(ProfileBufferEntryReader&amp; [, ProfileBufferBlockIndex])&gt;&amp;&amp;)
++ReadAt(ProfileBufferBlockIndex, Callback&lt;void(Maybe&lt;ProfileBufferEntryReader&gt;&amp;&amp;)&gt;&amp;&amp;)
++AppendContents</panel_attributes>
+ <additional_attributes/>
+ </element>
+ <element>
+ <id>UMLClass</id>
+ <coordinates>
+ <x>810</x>
+ <y>2100</y>
+ <w>500</w>
+ <h>620</h>
+ </coordinates>
+ <panel_attributes>ProfileBufferChunk
+--
++Header: {
+ mOffsetFirstBlock; mOffsetPastLastBlock; mDoneTimeStamp;
+ mBufferBytes; mBlockCount; mRangeStart; mProcessId;
+ }
+-InternalHeader: { mHeader: Header; mNext: UniquePtr&lt;ProfileBufferChunk&gt;; }
+--
+-mInternalHeader: InternalHeader
+-mBuffer: Byte /* First byte */
+--
++Byte = uint8_t
++Length = uint32_t
++SpanOfBytes = Span&lt;Byte&gt;
+/+Create(aMinBufferBytes: Length): UniquePtr&lt;ProfileBufferChunk&gt;/
++ReserveInitialBlockAsTail(Length): SpanOfBytes
++ReserveBlock(Length): { SpanOfBytes, ProfileBufferBlockIndex }
++MarkDone()
++MarkRecycled()
++ChunkHeader()
++BufferBytes()
++ChunkBytes()
++SizeOfExcludingThis(MallocSizeOf)
++SizeOfIncludingThis(MallocSizeOf)
++RemainingBytes(): Length
++OffsetFirstBlock(): Length
++OffsetPastLastBlock(): Length
++BlockCount(): Length
++ProcessId(): int
++SetProcessId(int)
++RangeStart(): ProfileBufferIndex
++SetRangeStart(ProfileBufferIndex)
++BufferSpan(): Span&lt;const Byte&gt;
++ByteAt(aOffset: Length)
++GetNext(): maybe-const ProfileBufferChunk*
++ReleaseNext(): UniquePtr&lt;ProfileBufferChunk&gt;
++InsertNext(UniquePtr&lt;ProfileBufferChunk&gt;&amp;&amp;)
++Last(): const ProfileBufferChunk*
++SetLast(UniquePtr&lt;ProfileBufferChunk&gt;&amp;&amp;)
+/+Join(UniquePtr&lt;ProfileBufferChunk&gt;&amp;&amp;, UniquePtr&lt;ProfileBufferChunk&gt;&amp;&amp;)/
+</panel_attributes>
+ <additional_attributes/>
+ </element>
+ <element>
+ <id>UMLClass</id>
+ <coordinates>
+ <x>120</x>
+ <y>2850</y>
+ <w>570</w>
+ <h>350</h>
+ </coordinates>
+ <panel_attributes>ProfileBufferEntryReader
+--
+-mCurrentSpan: SpanOfConstBytes
+-mNextSpanOrEmpty: SpanOfConstBytes
+-mCurrentBlockIndex: ProfileBufferBlockIndex
+-mNextBlockIndex: ProfileBufferBlockIndex
+--
++RemainingBytes(): Length
++SetRemainingBytes(Length)
++CurrentBlockIndex(): ProfileBufferBlockIndex
++NextBlockIndex(): ProfileBufferBlockIndex
++EmptyIteratorAtOffset(Length): ProfileBufferEntryReader
++operator*(): const Byte&amp;
++operator++(): ProfileBufferEntryReader&amp;
++operator+=(Length): ProfileBufferEntryReader&amp;
++operator==(const ProfileBufferEntryReader&amp;)
++operator!=(const ProfileBufferEntryReader&amp;)
++ReadULEB128&lt;T&gt;(): T
++ReadBytes(void*, Length)
++ReadIntoObject(T&amp;)
++ReadIntoObjects(Ts&amp;...)
++ReadObject&lt;T&gt;(): T</panel_attributes>
+ <additional_attributes/>
+ </element>
+ <element>
+ <id>UMLClass</id>
+ <coordinates>
+ <x>740</x>
+ <y>2850</y>
+ <w>570</w>
+ <h>300</h>
+ </coordinates>
+ <panel_attributes>ProfileBufferEntryWriter
+--
+-mCurrentSpan: SpanOfBytes
+-mNextSpanOrEmpty: SpanOfBytes
+-mCurrentBlockIndex: ProfileBufferBlockIndex
+-mNextBlockIndex: ProfileBufferBlockIndex
+--
++RemainingBytes(): Length
++CurrentBlockIndex(): ProfileBufferBlockIndex
++NextBlockIndex(): ProfileBufferBlockIndex
++operator*(): Byte&amp;
++operator++(): ProfileBufferEntryReader&amp;
++operator+=(Length): ProfileBufferEntryReader&amp;
+/+ULEB128Size(T): unsigned/
++WriteULEB128(T)
+/+SumBytes(const Ts&amp;...): Length/
++WriteFromReader(ProfileBufferEntryReader&amp;, Length)
++WriteObject(const T&amp;)
++WriteObjects(const T&amp;)</panel_attributes>
+ <additional_attributes/>
+ </element>
+ <element>
+ <id>UMLClass</id>
+ <coordinates>
+ <x>120</x>
+ <y>3270</y>
+ <w>570</w>
+ <h>80</h>
+ </coordinates>
+ <panel_attributes>ProfileBufferEntryReader::Deserializer&lt;T&gt;
+/to be specialized for all types read from ProfileBufferEntryReader/
+--
+/+ReadInto(ProfileBufferEntryReader&amp;, T&amp;)/
+/+Read&lt;T&gt;(ProfileBufferEntryReader&amp;): T/</panel_attributes>
+ <additional_attributes/>
+ </element>
+ <element>
+ <id>UMLClass</id>
+ <coordinates>
+ <x>740</x>
+ <y>3270</y>
+ <w>570</w>
+ <h>80</h>
+ </coordinates>
+ <panel_attributes>ProfileBufferEntryWriter::Serializer&lt;T&gt;
+/to be specialized for all types written into ProfileBufferEntryWriter/
+--
+/+Bytes(const T&amp;): Length/
+/+Write(ProfileBufferEntryWriter&amp;, const T&amp;)/</panel_attributes>
+ <additional_attributes/>
+ </element>
+ <element>
+ <id>Relation</id>
+ <coordinates>
+ <x>330</x>
+ <y>2710</y>
+ <w>110</w>
+ <h>160</h>
+ </coordinates>
+ <panel_attributes>lt=.&gt;
+&lt;&lt;creates&gt;&gt;</panel_attributes>
+ <additional_attributes>10.0;10.0;60.0;140.0</additional_attributes>
+ </element>
+ <element>
+ <id>Relation</id>
+ <coordinates>
+ <x>430</x>
+ <y>2710</y>
+ <w>360</w>
+ <h>160</h>
+ </coordinates>
+ <panel_attributes>lt=.&gt;
+&lt;&lt;creates&gt;&gt;</panel_attributes>
+ <additional_attributes>10.0;10.0;340.0;140.0</additional_attributes>
+ </element>
+ <element>
+ <id>Relation</id>
+ <coordinates>
+ <x>660</x>
+ <y>2710</y>
+ <w>260</w>
+ <h>160</h>
+ </coordinates>
+ <panel_attributes>lt=.&gt;
+&lt;&lt;points into&gt;&gt;</panel_attributes>
+ <additional_attributes>10.0;140.0;240.0;10.0</additional_attributes>
+ </element>
+ <element>
+ <id>Relation</id>
+ <coordinates>
+ <x>870</x>
+ <y>2710</y>
+ <w>140</w>
+ <h>160</h>
+ </coordinates>
+ <panel_attributes>lt=.&gt;
+&lt;&lt;points into&gt;&gt;</panel_attributes>
+ <additional_attributes>10.0;140.0;80.0;10.0</additional_attributes>
+ </element>
+ <element>
+ <id>Relation</id>
+ <coordinates>
+ <x>630</x>
+ <y>2170</y>
+ <w>200</w>
+ <h>40</h>
+ </coordinates>
+ <panel_attributes>lt=&lt;&lt;&lt;&lt;-
+mCurrentChunk</panel_attributes>
+ <additional_attributes>10.0;20.0;180.0;20.0</additional_attributes>
+ </element>
+ <element>
+ <id>Relation</id>
+ <coordinates>
+ <x>630</x>
+ <y>2230</y>
+ <w>200</w>
+ <h>40</h>
+ </coordinates>
+ <panel_attributes>lt=&lt;&lt;&lt;&lt;-
+mNextChunks</panel_attributes>
+ <additional_attributes>10.0;20.0;180.0;20.0</additional_attributes>
+ </element>
+ <element>
+ <id>Relation</id>
+ <coordinates>
+ <x>1100</x>
+ <y>2030</y>
+ <w>170</w>
+ <h>90</h>
+ </coordinates>
+ <panel_attributes>lt=&lt;&lt;&lt;&lt;-
+mInternalHeader.mNext</panel_attributes>
+ <additional_attributes>10.0;70.0;10.0;20.0;150.0;20.0;150.0;70.0</additional_attributes>
+ </element>
+ <element>
+ <id>Relation</id>
+ <coordinates>
+ <x>490</x>
+ <y>3190</y>
+ <w>70</w>
+ <h>100</h>
+ </coordinates>
+ <panel_attributes>lt=.&gt;
+&lt;&lt;uses&gt;&gt;</panel_attributes>
+ <additional_attributes>10.0;10.0;10.0;80.0</additional_attributes>
+ </element>
+ <element>
+ <id>Relation</id>
+ <coordinates>
+ <x>580</x>
+ <y>3190</y>
+ <w>230</w>
+ <h>100</h>
+ </coordinates>
+ <panel_attributes>lt=.&gt;
+&lt;&lt;uses&gt;&gt;</panel_attributes>
+ <additional_attributes>10.0;10.0;210.0;80.0</additional_attributes>
+ </element>
+ <element>
+ <id>UMLClass</id>
+ <coordinates>
+ <x>50</x>
+ <y>1620</y>
+ <w>570</w>
+ <h>410</h>
+ </coordinates>
+ <panel_attributes>ProfileBuffer
+--
+-mFirstSamplingTimeNs: double
+-mLastSamplingTimeNs: double
+-mIntervalNs, etc.: ProfilerStats
+--
++IsThreadSafe(): bool
++AddEntry(const ProfileBufferEntry&amp;): uint64_t
++AddThreadIdEntry(int): uint64_t
++PutObjects(Kind, const Ts&amp;...): ProfileBufferBlockIndex
++CollectCodeLocation(...)
++AddJITInfoForRange(...)
++StreamSamplesToJSON(SpliceableJSONWriter&amp;, aThreadId: int, aSinceTime: double, UniqueStacks&amp;)
++StreamMarkersToJSON(SpliceableJSONWriter&amp;, ...)
++StreamPausedRangesToJSON(SpliceableJSONWriter&amp;, aSinceTime: double)
++StreamProfilerOverheadToJSON(SpliceableJSONWriter&amp;, ...)
++StreamCountersToJSON(SpliceableJSONWriter&amp;, ...)
++DuplicateLsstSample
++DiscardSamplesBeforeTime(aTime: double)
++GetEntry(aPosition: uint64_t): ProfileBufferEntry
++SizeOfExcludingThis(MallocSizeOf)
++SizeOfIncludingThis(MallocSizeOf)
++CollectOverheadStats(...)
++GetProfilerBufferInfo(): ProfilerBufferInfo
++BufferRangeStart(): uint64_t
++BufferRangeEnd(): uint64_t</panel_attributes>
+ <additional_attributes/>
+ </element>
+ <element>
+ <id>UMLClass</id>
+ <coordinates>
+ <x>690</x>
+ <y>1620</y>
+ <w>230</w>
+ <h>60</h>
+ </coordinates>
+ <panel_attributes>ProfileBufferEntry
+--
++mKind: Kind
++mStorage: uint8_t[kNumChars=8]</panel_attributes>
+ <additional_attributes/>
+ </element>
+ <element>
+ <id>UMLClass</id>
+ <coordinates>
+ <x>930</x>
+ <y>1620</y>
+ <w>440</w>
+ <h>130</h>
+ </coordinates>
+ <panel_attributes>UniqueJSONStrings
+--
+-mStringTableWriter: SpliceableChunkedJSONWriter
+-mStringHashToIndexMap: HashMap&lt;HashNumber, uint32_t&gt;
+--
++SpliceStringTableElements(SpliceableJSONWriter&amp;)
++WriteProperty(JSONWriter&amp;, aName: const char*, aStr: const char*)
++WriteElement(JSONWriter&amp;, aStr: const char*)
++GetOrAddIndex(const char*): uint32_t</panel_attributes>
+ <additional_attributes/>
+ </element>
+ <element>
+ <id>UMLClass</id>
+ <coordinates>
+ <x>680</x>
+ <y>1760</y>
+ <w>470</w>
+ <h>110</h>
+ </coordinates>
+ <panel_attributes>UniqueStack
+--
+-mFrameTableWriter: SpliceableChunkedJSONWriter
+-mFrameToIndexMap: HashMap&lt;FrameKey, uint32_t, FrameKeyHasher&gt;
+-mStackTableWriter: SpliceableChunkedJSONWriter
+-mStackToIndexMap: HashMap&lt;StackKey, uint32_t, StackKeyHasher&gt;
+-mJITInfoRanges: Vector&lt;JITFrameInfoForBufferRange&gt;</panel_attributes>
+ <additional_attributes/>
+ </element>
+ <element>
+ <id>Relation</id>
+ <coordinates>
+ <x>320</x>
+ <y>2020</y>
+ <w>230</w>
+ <h>140</h>
+ </coordinates>
+ <panel_attributes>lt=&lt;&lt;&lt;&lt;-
+mEntries: ProfileChunkedBuffer&amp;</panel_attributes>
+ <additional_attributes>10.0;10.0;10.0;120.0</additional_attributes>
+ </element>
+ <element>
+ <id>Relation</id>
+ <coordinates>
+ <x>610</x>
+ <y>1640</y>
+ <w>100</w>
+ <h>40</h>
+ </coordinates>
+ <panel_attributes>lt=.&gt;
+&lt;&lt;uses&gt;&gt;</panel_attributes>
+ <additional_attributes>10.0;20.0;80.0;20.0</additional_attributes>
+ </element>
+ <element>
+ <id>Relation</id>
+ <coordinates>
+ <x>610</x>
+ <y>1710</y>
+ <w>340</w>
+ <h>40</h>
+ </coordinates>
+ <panel_attributes>lt=.&gt;
+&lt;&lt;uses&gt;&gt;</panel_attributes>
+ <additional_attributes>10.0;20.0;320.0;20.0</additional_attributes>
+ </element>
+ <element>
+ <id>Relation</id>
+ <coordinates>
+ <x>610</x>
+ <y>1800</y>
+ <w>90</w>
+ <h>40</h>
+ </coordinates>
+ <panel_attributes>lt=.&gt;
+&lt;&lt;uses&gt;&gt;</panel_attributes>
+ <additional_attributes>10.0;20.0;70.0;20.0</additional_attributes>
+ </element>
+ <element>
+ <id>Relation</id>
+ <coordinates>
+ <x>610</x>
+ <y>1900</y>
+ <w>170</w>
+ <h>40</h>
+ </coordinates>
+ <panel_attributes>lt=&lt;&lt;&lt;&lt;-
+mProfileBuffer</panel_attributes>
+ <additional_attributes>150.0;20.0;10.0;20.0</additional_attributes>
+ </element>
+ <element>
+ <id>Relation</id>
+ <coordinates>
+ <x>590</x>
+ <y>1940</y>
+ <w>250</w>
+ <h>220</h>
+ </coordinates>
+ <panel_attributes>lt=&lt;&lt;&lt;&lt;-
+mProfileChunkedBuffer</panel_attributes>
+ <additional_attributes>170.0;10.0;10.0;200.0</additional_attributes>
+ </element>
+ <element>
+ <id>UMLClass</id>
+ <coordinates>
+ <x>20</x>
+ <y>1030</y>
+ <w>490</w>
+ <h>550</h>
+ </coordinates>
+ <panel_attributes>CorePS
+--
+/-sInstance: CorePS*/
+-mMainThreadId: int
+-mProcessStartTime: TimeStamp
+-mCoreBuffer: ProfileChunkedBuffer
+-mRegisteredThreads: Vector&lt;UniquePtr&lt;RegisteredThread&gt;&gt;
+-mRegisteredPages: Vector&lt;RefPtr&lt;PageInformation&gt;&gt;
+-mCounters: Vector&lt;BaseProfilerCount*&gt;
+-mLul: UniquePtr&lt;lul::LUL&gt; /* linux only */
+-mProcessName: nsAutoCString
+-mJsFrames: JsFrameBuffer
+--
++Create
++Destroy
++Exists(): bool
++AddSizeOf(...)
++MainThreadId()
++ProcessStartTime()
++CoreBuffer()
++RegisteredThreads(PSLockRef)
++JsFrames(PSLockRef)
+/+AppendRegisteredThread(PSLockRef, UniquePtr&lt;RegisteredThread&gt;)/
+/+RemoveRegisteredThread(PSLockRef, RegisteredThread*)/
++RegisteredPages(PSLockRef)
+/+AppendRegisteredPage(PSLockRef, RefPtr&lt;PageInformation&gt;)/
+/+RemoveRegisteredPage(PSLockRef, aRegisteredInnerWindowID: uint64_t)/
+/+ClearRegisteredPages(PSLockRef)/
++Counters(PSLockRef)
++AppendCounter
++RemoveCounter
++Lul(PSLockRef)
++SetLul(PSLockRef, UniquePtr&lt;lul::LUL&gt;)
++ProcessName(PSLockRef)
++SetProcessName(PSLockRef, const nsACString&amp;)
+</panel_attributes>
+ <additional_attributes/>
+ </element>
+ <element>
+ <id>Relation</id>
+ <coordinates>
+ <x>20</x>
+ <y>1570</y>
+ <w>110</w>
+ <h>590</h>
+ </coordinates>
+ <panel_attributes>lt=&lt;&lt;&lt;&lt;&lt;-
+mCoreBuffer</panel_attributes>
+ <additional_attributes>10.0;10.0;10.0;570.0</additional_attributes>
+ </element>
+ <element>
+ <id>Relation</id>
+ <coordinates>
+ <x>160</x>
+ <y>840</y>
+ <w>150</w>
+ <h>210</h>
+ </coordinates>
+ <panel_attributes>lt=&lt;&lt;&lt;&lt;-
+mRegisteredPages</panel_attributes>
+ <additional_attributes>10.0;190.0;10.0;10.0</additional_attributes>
+ </element>
+ <element>
+ <id>Relation</id>
+ <coordinates>
+ <x>250</x>
+ <y>840</y>
+ <w>240</w>
+ <h>210</h>
+ </coordinates>
+ <panel_attributes>lt=&lt;&lt;&lt;&lt;-
+mRegisteredThreads</panel_attributes>
+ <additional_attributes>10.0;190.0;220.0;10.0</additional_attributes>
+ </element>
+ <element>
+ <id>UMLClass</id>
+ <coordinates>
+ <x>920</x>
+ <y>860</y>
+ <w>340</w>
+ <h>190</h>
+ </coordinates>
+ <panel_attributes>SamplerThread
+--
+-mSampler: Sampler
+-mActivityGeneration: uint32_t
+-mIntervalMicroseconds: int
+-mThread /* OS-specific */
+-mPostSamplingCallbackList: UniquePtr&lt;PostSamplingCallbackListItem&gt;
+--
++Run()
++Stop(PSLockRef)
++AppendPostSamplingCallback(PSLockRef, PostSamplingCallback&amp;&amp;)</panel_attributes>
+ <additional_attributes/>
+ </element>
+ <element>
+ <id>UMLClass</id>
+ <coordinates>
+ <x>1060</x>
+ <y>600</y>
+ <w>340</w>
+ <h>190</h>
+ </coordinates>
+ <panel_attributes>Sampler
+--
+-mOldSigprofHandler: sigaction
+-mMyPid: int
+-mSamplerTid: int
++sSigHandlerCoordinator
+--
++Disable(PSLockRef)
++SuspendAndSampleAndResumeThread(PSLockRef, const RegisteredThread&amp;, aNow: TimeStamp, const Func&amp;)
+</panel_attributes>
+ <additional_attributes/>
+ </element>
+ <element>
+ <id>Relation</id>
+ <coordinates>
+ <x>1190</x>
+ <y>780</y>
+ <w>90</w>
+ <h>100</h>
+ </coordinates>
+ <panel_attributes>lt=&lt;&lt;&lt;&lt;&lt;-
+mSampler</panel_attributes>
+ <additional_attributes>10.0;80.0;10.0;10.0</additional_attributes>
+ </element>
+ <element>
+ <id>UMLClass</id>
+ <coordinates>
+ <x>610</x>
+ <y>1130</y>
+ <w>470</w>
+ <h>400</h>
+ </coordinates>
+ <panel_attributes>ActivePS
+--
+/-sInstance: ActivePS*/
+-mGeneration: const uint32_t
+/-sNextGeneration: uint32_t/
+-mCapacity: const PowerOfTwo
+-mDuration: const Maybe&lt;double&gt;
+-mInterval: const double /* milliseconds */
+-mFeatures: const uint32_t
+-mFilters: Vector&lt;std::string&gt;
+-mActiveBrowsingContextID: uint64_t
+-mProfileBufferChunkManager: ProfileBufferChunkManagerWithLocalLimit
+-mProfileBuffer: ProfileBuffer
+-mLiveProfiledThreads: Vector&lt;LiveProfiledThreadData&gt;
+-mDeadProfiledThreads: Vector&lt;UniquePtr&lt;ProfiledThreadData&gt;&gt;
+-mDeadProfiledPages: Vector&lt;RefPtr&lt;PageInformation&gt;&gt;
+-mSamplerThread: SamplerThread* const
+-mInterposeObserver: RefPtr&lt;ProfilerIOInterposeObserver&gt;
+-mPaused: bool
+-mWasPaused: bool /* linux */
+-mBaseProfileThreads: UniquePtr&lt;char[]&gt;
+-mGeckoIndexWhenBaseProfileAdded: ProfileBufferBlockIndex
+-mExitProfiles: Vector&lt;ExitProfile&gt;
+--
++</panel_attributes>
+ <additional_attributes/>
+ </element>
+ <element>
+ <id>Relation</id>
+ <coordinates>
+ <x>970</x>
+ <y>1040</y>
+ <w>140</w>
+ <h>110</h>
+ </coordinates>
+ <panel_attributes>lt=&lt;&lt;&lt;&lt;-
+mSamplerThread</panel_attributes>
+ <additional_attributes>10.0;90.0;10.0;10.0</additional_attributes>
+ </element>
+ <element>
+ <id>UMLNote</id>
+ <coordinates>
+ <x>500</x>
+ <y>160</y>
+ <w>510</w>
+ <h>100</h>
+ </coordinates>
+ <panel_attributes>bg=red
+This document pre-dates the generated image profilerclasses-20220913.png!
+Unfortunately, the changes to make the image were lost.
+
+This previous version may still be useful to start reconstructing the image,
+if there is a need to update it.</panel_attributes>
+ <additional_attributes/>
+ </element>
+</diagram>
diff --git a/tools/profiler/docs/profilerthreadregistration-20220913.png b/tools/profiler/docs/profilerthreadregistration-20220913.png
new file mode 100644
index 0000000000..8f7049d743
--- /dev/null
+++ b/tools/profiler/docs/profilerthreadregistration-20220913.png
Binary files differ
diff --git a/tools/profiler/docs/profilerthreadregistration.umlet.uxf b/tools/profiler/docs/profilerthreadregistration.umlet.uxf
new file mode 100644
index 0000000000..3e07215db4
--- /dev/null
+++ b/tools/profiler/docs/profilerthreadregistration.umlet.uxf
@@ -0,0 +1,710 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<diagram program="umlet" version="15.0.0">
+ <zoom_level>10</zoom_level>
+ <element>
+ <id>UMLClass</id>
+ <coordinates>
+ <x>200</x>
+ <y>330</y>
+ <w>370</w>
+ <h>250</h>
+ </coordinates>
+ <panel_attributes>ThreadRegistry::OffThreadRef
+--
++UnlockedConstReaderCRef() const
++WithUnlockedConstReader(F&amp;&amp; aF) const
++UnlockedConstReaderAndAtomicRWCRef() const
++WithUnlockedConstReaderAndAtomicRW(F&amp;&amp; aF) const
++UnlockedConstReaderAndAtomicRWRef()
++WithUnlockedConstReaderAndAtomicRW(F&amp;&amp; aF)
++UnlockedRWForLockedProfilerCRef()
++WithUnlockedRWForLockedProfiler(F&amp;&amp; aF)
++UnlockedRWForLockedProfilerRef()
++WithUnlockedRWForLockedProfiler(F&amp;&amp; aF)
++ConstLockedRWFromAnyThread()
++WithConstLockedRWFromAnyThread(F&amp;&amp; aF)
++LockedRWFromAnyThread()
++WithLockedRWFromAnyThread(F&amp;&amp; aF)</panel_attributes>
+ <additional_attributes/>
+ </element>
+ <element>
+ <id>UMLClass</id>
+ <coordinates>
+ <x>310</x>
+ <y>80</y>
+ <w>560</w>
+ <h>160</h>
+ </coordinates>
+ <panel_attributes>ThreadRegistry
+--
+-sRegistryMutex: RegistryMutex (aka BaseProfilerSharedMutex)
+/exclusive lock used during un/registration, shared lock for other accesses/
+--
+friend class ThreadRegistration
+-Register(ThreadRegistration::OnThreadRef)
+-Unregister(ThreadRegistration::OnThreadRef)
+--
++WithOffThreadRef(ProfilerThreadId, auto&amp;&amp; aF) static
++WithOffThreadRefOr(ProfilerThreadId, auto&amp;&amp; aF, auto&amp;&amp; aFallbackReturn) static: auto</panel_attributes>
+ <additional_attributes/>
+ </element>
+ <element>
+ <id>UMLClass</id>
+ <coordinates>
+ <x>310</x>
+ <y>630</y>
+ <w>530</w>
+ <h>260</h>
+ </coordinates>
+ <panel_attributes>ThreadRegistration
+--
+-mDataMutex: DataMutex (aka BaseProfilerMutex)
+-mIsOnHeap: bool
+-mIsRegistryLockedSharedOnThisThread: bool
+-tlsThreadRegistration: MOZ_THREAD_LOCAL(ThreadRegistration*)
+-GetTLS() static: tlsThreadRegistration*
+-GetFromTLS() static: ThreadRegistration*
+--
++ThreadRegistration(const char* aName, const void* aStackTop)
++~ThreadRegistration()
++RegisterThread(const char* aName, const void* aStackTop) static: ProfilingStack*
++UnregisterThread() static
++IsRegistered() static: bool
++GetOnThreadPtr() static OnThreadPtr
++WithOnThreadRefOr(auto&amp;&amp; aF, auto&amp;&amp; aFallbackReturn) static: auto
++IsDataMutexLockedOnCurrentThread() static: bool</panel_attributes>
+ <additional_attributes/>
+ </element>
+ <element>
+ <id>UMLClass</id>
+ <coordinates>
+ <x>880</x>
+ <y>620</y>
+ <w>450</w>
+ <h>290</h>
+ </coordinates>
+ <panel_attributes>ThreadRegistration::OnThreadRef
+--
++UnlockedConstReaderCRef() const
++WithUnlockedConstReader(auto&amp;&amp; aF) const: auto
++UnlockedConstReaderAndAtomicRWCRef() const
++WithUnlockedConstReaderAndAtomicRW(auto&amp;&amp; aF) const: auto
++UnlockedConstReaderAndAtomicRWRef()
++WithUnlockedConstReaderAndAtomicRW(auto&amp;&amp; aF): auto
++UnlockedRWForLockedProfilerCRef() const
++WithUnlockedRWForLockedProfiler(auto&amp;&amp; aF) const: auto
++UnlockedRWForLockedProfilerRef()
++WithUnlockedRWForLockedProfiler(auto&amp;&amp; aF): auto
++UnlockedReaderAndAtomicRWOnThreadCRef() const
++WithUnlockedReaderAndAtomicRWOnThread(auto&amp;&amp; aF) const: auto
++UnlockedReaderAndAtomicRWOnThreadRef()
++WithUnlockedReaderAndAtomicRWOnThread(auto&amp;&amp; aF): auto
++RWOnThreadWithLock LockedRWOnThread()
++WithLockedRWOnThread(auto&amp;&amp; aF): auto</panel_attributes>
+ <additional_attributes/>
+ </element>
+ <element>
+ <id>UMLClass</id>
+ <coordinates>
+ <x>1040</x>
+ <y>440</y>
+ <w>230</w>
+ <h>70</h>
+ </coordinates>
+ <panel_attributes>ThreadRegistration::OnThreadPtr
+--
++operator*(): OnThreadRef
++operator-&gt;(): OnThreadRef</panel_attributes>
+ <additional_attributes/>
+ </element>
+ <element>
+ <id>UMLClass</id>
+ <coordinates>
+ <x>450</x>
+ <y>940</y>
+ <w>350</w>
+ <h>240</h>
+ </coordinates>
+ <panel_attributes>ThreadRegistrationData
+--
+-mProfilingStack: ProfilingStack
+-mStackTop: const void* const
+-mThread: nsCOMPtr&lt;nsIThread&gt;
+-mJSContext: JSContext*
+-mJsFrameBuffer: JsFrame*
+-mJSFlags: uint32_t
+-Sleep: Atomic&lt;int&gt;
+-mThreadCpuTimeInNsAtLastSleep: Atomic&lt;uint64_t&gt;
+-mWakeCount: Atomic&lt;uint64_t, Relaxed&gt;
+-mRecordWakeCountMutex: BaseProfilerMutex
+-mAlreadyRecordedWakeCount: uint64_t
+-mAlreadyRecordedCpuTimeInMs: uin64_t
+-mThreadProfilingFeatures: ThreadProfilingFeatures</panel_attributes>
+ <additional_attributes/>
+ </element>
+ <element>
+ <id>UMLClass</id>
+ <coordinates>
+ <x>460</x>
+ <y>1220</y>
+ <w>330</w>
+ <h>80</h>
+ </coordinates>
+ <panel_attributes>ThreadRegistrationUnlockedConstReader
+--
++Info() const: const ThreadRegistrationInfo&amp;
++PlatformDataCRef() const: const PlatformData&amp;
++StackTop() const: const void*</panel_attributes>
+ <additional_attributes/>
+ </element>
+ <element>
+ <id>UMLClass</id>
+ <coordinates>
+ <x>440</x>
+ <y>1340</y>
+ <w>370</w>
+ <h>190</h>
+ </coordinates>
+ <panel_attributes>ThreadRegistrationUnlockedConstReaderAndAtomicRW
+--
++ProfilingStackCRef() const: const ProfilingStack&amp;
++ProfilingStackRef(): ProfilingStack&amp;
++ProfilingFeatures() const: ThreadProfilingFeatures
++SetSleeping()
++SetAwake()
++GetNewCpuTimeInNs(): uint64_t
++RecordWakeCount() const
++ReinitializeOnResume()
++CanDuplicateLastSampleDueToSleep(): bool
++IsSleeping(): bool</panel_attributes>
+ <additional_attributes/>
+ </element>
+ <element>
+ <id>UMLClass</id>
+ <coordinates>
+ <x>460</x>
+ <y>1570</y>
+ <w>330</w>
+ <h>60</h>
+ </coordinates>
+ <panel_attributes>ThreadRegistrationUnlockedRWForLockedProfiler
+--
++GetProfiledThreadData(): const ProfiledThreadData*
++GetProfiliedThreadData(): ProfiledThreadData*</panel_attributes>
+ <additional_attributes/>
+ </element>
+ <element>
+ <id>UMLClass</id>
+ <coordinates>
+ <x>430</x>
+ <y>1670</y>
+ <w>390</w>
+ <h>50</h>
+ </coordinates>
+ <panel_attributes>ThreadRegistrationUnlockedReaderAndAtomicRWOnThread
+--
++GetJSContext(): JSContext*</panel_attributes>
+ <additional_attributes/>
+ </element>
+ <element>
+ <id>UMLClass</id>
+ <coordinates>
+ <x>380</x>
+ <y>1840</y>
+ <w>490</w>
+ <h>190</h>
+ </coordinates>
+ <panel_attributes>ThreadRegistrationLockedRWFromAnyThread
+--
++SetProfilingFeaturesAndData(
+ ThreadProfilingFeatures, ProfiledThreadData*, const PSAutoLock&amp;)
++ClearProfilingFeaturesAndData(const PSAutoLock&amp;)
++GetJsFrameBuffer() const JsFrame*
++GetEventTarget() const: const nsCOMPtr&lt;nsIEventTarget&gt;
++ResetMainThread()
++GetRunningEventDelay(const TimeStamp&amp;, TimeDuration&amp;, TimeDuration&amp;)
++StartJSSampling(uint32_t)
++StopJSSampling()</panel_attributes>
+ <additional_attributes/>
+ </element>
+ <element>
+ <id>UMLClass</id>
+ <coordinates>
+ <x>490</x>
+ <y>2070</y>
+ <w>260</w>
+ <h>80</h>
+ </coordinates>
+ <panel_attributes>ThreadRegistrationLockedRWOnThread
+--
++SetJSContext(JSContext*)
++ClearJSContext()
++PollJSSampling()</panel_attributes>
+ <additional_attributes/>
+ </element>
+ <element>
+ <id>Relation</id>
+ <coordinates>
+ <x>610</x>
+ <y>1170</y>
+ <w>30</w>
+ <h>70</h>
+ </coordinates>
+ <panel_attributes>lt=&lt;&lt;-</panel_attributes>
+ <additional_attributes>10.0;10.0;10.0;50.0</additional_attributes>
+ </element>
+ <element>
+ <id>UMLClass</id>
+ <coordinates>
+ <x>500</x>
+ <y>2190</y>
+ <w>240</w>
+ <h>60</h>
+ </coordinates>
+ <panel_attributes>ThreadRegistration::EmbeddedData
+--</panel_attributes>
+ <additional_attributes/>
+ </element>
+ <element>
+ <id>Relation</id>
+ <coordinates>
+ <x>610</x>
+ <y>1290</y>
+ <w>30</w>
+ <h>70</h>
+ </coordinates>
+ <panel_attributes>lt=&lt;&lt;-</panel_attributes>
+ <additional_attributes>10.0;10.0;10.0;50.0</additional_attributes>
+ </element>
+ <element>
+ <id>Relation</id>
+ <coordinates>
+ <x>610</x>
+ <y>1520</y>
+ <w>30</w>
+ <h>70</h>
+ </coordinates>
+ <panel_attributes>lt=&lt;&lt;-</panel_attributes>
+ <additional_attributes>10.0;10.0;10.0;50.0</additional_attributes>
+ </element>
+ <element>
+ <id>Relation</id>
+ <coordinates>
+ <x>610</x>
+ <y>1620</y>
+ <w>30</w>
+ <h>70</h>
+ </coordinates>
+ <panel_attributes>lt=&lt;&lt;-</panel_attributes>
+ <additional_attributes>10.0;10.0;10.0;50.0</additional_attributes>
+ </element>
+ <element>
+ <id>Relation</id>
+ <coordinates>
+ <x>650</x>
+ <y>1710</y>
+ <w>30</w>
+ <h>150</h>
+ </coordinates>
+ <panel_attributes>lt=&lt;&lt;-</panel_attributes>
+ <additional_attributes>10.0;10.0;10.0;130.0</additional_attributes>
+ </element>
+ <element>
+ <id>Relation</id>
+ <coordinates>
+ <x>610</x>
+ <y>2020</y>
+ <w>30</w>
+ <h>70</h>
+ </coordinates>
+ <panel_attributes>lt=&lt;&lt;-</panel_attributes>
+ <additional_attributes>10.0;10.0;10.0;50.0</additional_attributes>
+ </element>
+ <element>
+ <id>Relation</id>
+ <coordinates>
+ <x>610</x>
+ <y>2140</y>
+ <w>30</w>
+ <h>70</h>
+ </coordinates>
+ <panel_attributes>lt=&lt;&lt;-</panel_attributes>
+ <additional_attributes>10.0;10.0;10.0;50.0</additional_attributes>
+ </element>
+ <element>
+ <id>Relation</id>
+ <coordinates>
+ <x>340</x>
+ <y>880</y>
+ <w>180</w>
+ <h>1370</h>
+ </coordinates>
+ <panel_attributes>lt=-&gt;&gt;&gt;&gt;&gt;
+mData</panel_attributes>
+ <additional_attributes>160.0;1350.0;10.0;1350.0;10.0;10.0</additional_attributes>
+ </element>
+ <element>
+ <id>UMLClass</id>
+ <coordinates>
+ <x>990</x>
+ <y>930</y>
+ <w>210</w>
+ <h>100</h>
+ </coordinates>
+ <panel_attributes>ThreadRegistrationInfo
+--
++Name(): const char*
++RegisterTime(): const TimeStamp&amp;
++ThreadId(): ProfilerThreadId
++IsMainThread(): bool</panel_attributes>
+ <additional_attributes/>
+ </element>
+ <element>
+ <id>Relation</id>
+ <coordinates>
+ <x>790</x>
+ <y>980</y>
+ <w>220</w>
+ <h>40</h>
+ </coordinates>
+ <panel_attributes>lt=-&gt;&gt;&gt;&gt;&gt;
+mInfo</panel_attributes>
+ <additional_attributes>200.0;20.0;10.0;20.0</additional_attributes>
+ </element>
+ <element>
+ <id>UMLClass</id>
+ <coordinates>
+ <x>990</x>
+ <y>1040</y>
+ <w>210</w>
+ <h>50</h>
+ </coordinates>
+ <panel_attributes>PlatformData
+--
+</panel_attributes>
+ <additional_attributes/>
+ </element>
+ <element>
+ <id>Relation</id>
+ <coordinates>
+ <x>790</x>
+ <y>1040</y>
+ <w>220</w>
+ <h>40</h>
+ </coordinates>
+ <panel_attributes>lt=-&gt;&gt;&gt;&gt;&gt;
+mPlatformData</panel_attributes>
+ <additional_attributes>200.0;20.0;10.0;20.0</additional_attributes>
+ </element>
+ <element>
+ <id>UMLClass</id>
+ <coordinates>
+ <x>990</x>
+ <y>1100</y>
+ <w>210</w>
+ <h>60</h>
+ </coordinates>
+ <panel_attributes>ProfiledThreadData
+--</panel_attributes>
+ <additional_attributes/>
+ </element>
+ <element>
+ <id>Relation</id>
+ <coordinates>
+ <x>790</x>
+ <y>1100</y>
+ <w>220</w>
+ <h>40</h>
+ </coordinates>
+ <panel_attributes>lt=-&gt;&gt;&gt;&gt;
+mProfiledThreadData: *</panel_attributes>
+ <additional_attributes>200.0;20.0;10.0;20.0</additional_attributes>
+ </element>
+ <element>
+ <id>Relation</id>
+ <coordinates>
+ <x>710</x>
+ <y>480</y>
+ <w>350</w>
+ <h>170</h>
+ </coordinates>
+ <panel_attributes>lt=-&gt;&gt;&gt;&gt;
+m1=0..1
+mThreadRegistration: *</panel_attributes>
+ <additional_attributes>10.0;150.0;330.0;10.0</additional_attributes>
+ </element>
+ <element>
+ <id>Relation</id>
+ <coordinates>
+ <x>830</x>
+ <y>580</y>
+ <w>260</w>
+ <h>130</h>
+ </coordinates>
+ <panel_attributes>lt=-&gt;&gt;&gt;&gt;
+m1=1
+mThreadRegistration: *</panel_attributes>
+ <additional_attributes>10.0;110.0;40.0;20.0;220.0;20.0;240.0;40.0</additional_attributes>
+ </element>
+ <element>
+ <id>Relation</id>
+ <coordinates>
+ <x>1140</x>
+ <y>500</y>
+ <w>90</w>
+ <h>140</h>
+ </coordinates>
+ <panel_attributes>lt=&lt;.
+&lt;creates&gt;</panel_attributes>
+ <additional_attributes>10.0;120.0;10.0;10.0</additional_attributes>
+ </element>
+ <element>
+ <id>Relation</id>
+ <coordinates>
+ <x>780</x>
+ <y>900</y>
+ <w>450</w>
+ <h>380</h>
+ </coordinates>
+ <panel_attributes>lt=&lt;.
+&lt;accesses&gt;</panel_attributes>
+ <additional_attributes>10.0;360.0;430.0;360.0;430.0;10.0</additional_attributes>
+ </element>
+ <element>
+ <id>Relation</id>
+ <coordinates>
+ <x>800</x>
+ <y>900</y>
+ <w>510</w>
+ <h>560</h>
+ </coordinates>
+ <panel_attributes>lt=&lt;.
+&lt;accesses&gt;</panel_attributes>
+ <additional_attributes>10.0;540.0;420.0;540.0;420.0;10.0</additional_attributes>
+ </element>
+ <element>
+ <id>Relation</id>
+ <coordinates>
+ <x>780</x>
+ <y>900</y>
+ <w>540</w>
+ <h>720</h>
+ </coordinates>
+ <panel_attributes>lt=&lt;.
+&lt;accesses&gt;</panel_attributes>
+ <additional_attributes>10.0;700.0;450.0;700.0;450.0;10.0</additional_attributes>
+ </element>
+ <element>
+ <id>Relation</id>
+ <coordinates>
+ <x>810</x>
+ <y>900</y>
+ <w>520</w>
+ <h>820</h>
+ </coordinates>
+ <panel_attributes>lt=&lt;.
+&lt;accesses&gt;</panel_attributes>
+ <additional_attributes>10.0;800.0;430.0;800.0;430.0;10.0</additional_attributes>
+ </element>
+ <element>
+ <id>UMLClass</id>
+ <coordinates>
+ <x>900</x>
+ <y>2070</y>
+ <w>410</w>
+ <h>80</h>
+ </coordinates>
+ <panel_attributes>ThreadRegistration::OnThreadRef::ConstRWOnThreadWithLock
+--
+-mDataLock: BaseProfilerAutoLock
+--
++DataCRef() const: ThreadRegistrationLockedRWOnThread&amp;
++operator-&gt;() const: ThreadRegistrationLockedRWOnThread&amp;</panel_attributes>
+ <additional_attributes/>
+ </element>
+ <element>
+ <id>Relation</id>
+ <coordinates>
+ <x>740</x>
+ <y>2100</y>
+ <w>180</w>
+ <h>40</h>
+ </coordinates>
+ <panel_attributes>lt=-&gt;&gt;&gt;&gt;
+mLockedRWOnThread</panel_attributes>
+ <additional_attributes>10.0;20.0;160.0;20.0</additional_attributes>
+ </element>
+ <element>
+ <id>Relation</id>
+ <coordinates>
+ <x>1250</x>
+ <y>900</y>
+ <w>90</w>
+ <h>1190</h>
+ </coordinates>
+ <panel_attributes>lt=&lt;.
+&lt;creates&gt;</panel_attributes>
+ <additional_attributes>10.0;1170.0;10.0;10.0</additional_attributes>
+ </element>
+ <element>
+ <id>Relation</id>
+ <coordinates>
+ <x>660</x>
+ <y>440</y>
+ <w>400</w>
+ <h>210</h>
+ </coordinates>
+ <panel_attributes>lt=&lt;.
+&lt;creates&gt;</panel_attributes>
+ <additional_attributes>380.0;10.0;10.0;190.0</additional_attributes>
+ </element>
+ <element>
+ <id>Relation</id>
+ <coordinates>
+ <x>740</x>
+ <y>880</y>
+ <w>160</w>
+ <h>50</h>
+ </coordinates>
+ <panel_attributes>lt=&lt;.
+&lt;creates&gt;</panel_attributes>
+ <additional_attributes>140.0;30.0;50.0;30.0;10.0;10.0</additional_attributes>
+ </element>
+ <element>
+ <id>Relation</id>
+ <coordinates>
+ <x>460</x>
+ <y>230</y>
+ <w>150</w>
+ <h>120</h>
+ </coordinates>
+ <panel_attributes>lt=-&gt;&gt;&gt;&gt;
+m1=0..N
+sRegistryContainer:
+static Vector&lt;&gt;</panel_attributes>
+ <additional_attributes>10.0;100.0;10.0;10.0</additional_attributes>
+ </element>
+ <element>
+ <id>UMLClass</id>
+ <coordinates>
+ <x>800</x>
+ <y>250</y>
+ <w>470</w>
+ <h>150</h>
+ </coordinates>
+ <panel_attributes>ThreadRegistry::LockedRegistry
+--
+-mRegistryLock: RegistryLockShared (aka BaseProfilerAutoLockShared)
+--
++LockedRegistry()
++~LockedRegistry()
++begin() const: const OffThreadRef*
++end() const: const OffThreadRef*
++begin(): OffThreadRef*
++end(): OffThreadRef*</panel_attributes>
+ <additional_attributes/>
+ </element>
+ <element>
+ <id>Relation</id>
+ <coordinates>
+ <x>560</x>
+ <y>350</y>
+ <w>260</w>
+ <h>50</h>
+ </coordinates>
+ <panel_attributes>lt=&lt;.
+&lt;accesses with
+shared lock&gt;</panel_attributes>
+ <additional_attributes>10.0;20.0;240.0;20.0</additional_attributes>
+ </element>
+ <element>
+ <id>Relation</id>
+ <coordinates>
+ <x>550</x>
+ <y>390</y>
+ <w>330</w>
+ <h>260</h>
+ </coordinates>
+ <panel_attributes>lt=&lt;.
+&lt;updates
+mIsRegistryLockedSharedOnThisThread&gt;</panel_attributes>
+ <additional_attributes>10.0;240.0;310.0;10.0</additional_attributes>
+ </element>
+ <element>
+ <id>Relation</id>
+ <coordinates>
+ <x>330</x>
+ <y>570</y>
+ <w>170</w>
+ <h>80</h>
+ </coordinates>
+ <panel_attributes>lt=-&gt;&gt;&gt;&gt;
+m1=1
+mThreadRegistration: *</panel_attributes>
+ <additional_attributes>120.0;60.0;40.0;10.0</additional_attributes>
+ </element>
+ <element>
+ <id>Relation</id>
+ <coordinates>
+ <x>280</x>
+ <y>570</y>
+ <w>200</w>
+ <h>710</h>
+ </coordinates>
+ <panel_attributes>lt=&lt;.
+&lt;accesses&gt;</panel_attributes>
+ <additional_attributes>180.0;690.0;10.0;690.0;10.0;10.0</additional_attributes>
+ </element>
+ <element>
+ <id>Relation</id>
+ <coordinates>
+ <x>270</x>
+ <y>570</y>
+ <w>190</w>
+ <h>890</h>
+ </coordinates>
+ <panel_attributes>lt=&lt;.
+&lt;accesses&gt;</panel_attributes>
+ <additional_attributes>170.0;870.0;10.0;870.0;10.0;10.0</additional_attributes>
+ </element>
+ <element>
+ <id>UMLClass</id>
+ <coordinates>
+ <x>200</x>
+ <y>1740</y>
+ <w>440</w>
+ <h>80</h>
+ </coordinates>
+ <panel_attributes>ThreadRegistry::OffThreadRef::{,Const}RWFromAnyThreadWithLock
+--
+-mDataLock: BaseProfilerAutoLock
+--
++DataCRef() {,const}: ThreadRegistrationLockedRWOnThread&amp;
++operator-&gt;() {,const}: ThreadRegistrationLockedRWOnThread&amp;</panel_attributes>
+ <additional_attributes/>
+ </element>
+ <element>
+ <id>Relation</id>
+ <coordinates>
+ <x>250</x>
+ <y>570</y>
+ <w>90</w>
+ <h>1190</h>
+ </coordinates>
+ <panel_attributes>lt=&lt;.
+&lt;creates&gt;</panel_attributes>
+ <additional_attributes>10.0;1170.0;10.0;10.0</additional_attributes>
+ </element>
+ <element>
+ <id>Relation</id>
+ <coordinates>
+ <x>180</x>
+ <y>1810</y>
+ <w>220</w>
+ <h>120</h>
+ </coordinates>
+ <panel_attributes>lt=-&gt;&gt;&gt;&gt;
+mLockedRWFromAnyThread</panel_attributes>
+ <additional_attributes>200.0;100.0;80.0;100.0;80.0;10.0</additional_attributes>
+ </element>
+</diagram>
diff --git a/tools/profiler/gecko/ChildProfilerController.cpp b/tools/profiler/gecko/ChildProfilerController.cpp
new file mode 100644
index 0000000000..f51cb9437d
--- /dev/null
+++ b/tools/profiler/gecko/ChildProfilerController.cpp
@@ -0,0 +1,170 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "ChildProfilerController.h"
+
+#include "ProfilerChild.h"
+
+#include "mozilla/ProfilerState.h"
+#include "mozilla/ipc/Endpoint.h"
+#include "nsExceptionHandler.h"
+#include "nsIThread.h"
+#include "nsThreadUtils.h"
+
+using namespace mozilla::ipc;
+
+namespace mozilla {
+
+/* static */
+already_AddRefed<ChildProfilerController> ChildProfilerController::Create(
+ mozilla::ipc::Endpoint<PProfilerChild>&& aEndpoint) {
+ MOZ_RELEASE_ASSERT(NS_IsMainThread());
+ RefPtr<ChildProfilerController> cpc = new ChildProfilerController();
+ cpc->Init(std::move(aEndpoint));
+ return cpc.forget();
+}
+
+ChildProfilerController::ChildProfilerController()
+ : mThread(nullptr, "ChildProfilerController::mThread") {
+ MOZ_COUNT_CTOR(ChildProfilerController);
+}
+
+void ChildProfilerController::Init(Endpoint<PProfilerChild>&& aEndpoint) {
+ RefPtr<nsIThread> newProfilerChildThread;
+ if (NS_SUCCEEDED(NS_NewNamedThread("ProfilerChild",
+ getter_AddRefs(newProfilerChildThread)))) {
+ {
+ auto lock = mThread.Lock();
+ RefPtr<nsIThread>& lockedmThread = lock.ref();
+ MOZ_ASSERT(!lockedmThread, "There is already a ProfilerChild thread");
+ // Copy ref'd ptr into mThread. Don't move/swap, so that
+ // newProfilerChildThread can be used below.
+ lockedmThread = newProfilerChildThread;
+ }
+ // Now that mThread has been set, run SetupProfilerChild on the thread.
+ newProfilerChildThread->Dispatch(
+ NewRunnableMethod<Endpoint<PProfilerChild>&&>(
+ "ChildProfilerController::SetupProfilerChild", this,
+ &ChildProfilerController::SetupProfilerChild, std::move(aEndpoint)),
+ NS_DISPATCH_NORMAL);
+ }
+}
+
+ProfileAndAdditionalInformation
+ChildProfilerController::GrabShutdownProfileAndShutdown() {
+ ProfileAndAdditionalInformation profileAndAdditionalInformation;
+ ShutdownAndMaybeGrabShutdownProfileFirst(&profileAndAdditionalInformation);
+ return profileAndAdditionalInformation;
+}
+
+void ChildProfilerController::Shutdown() {
+ ShutdownAndMaybeGrabShutdownProfileFirst(nullptr);
+}
+
+void ChildProfilerController::ShutdownAndMaybeGrabShutdownProfileFirst(
+ ProfileAndAdditionalInformation* aOutShutdownProfileInformation) {
+ // First, get the owning reference out of mThread, so it cannot be used in
+ // ChildProfilerController after this (including re-entrantly during the
+ // profilerChildThread->Shutdown() inner event loop below).
+ RefPtr<nsIThread> profilerChildThread;
+ {
+ auto lock = mThread.Lock();
+ RefPtr<nsIThread>& lockedmThread = lock.ref();
+ lockedmThread.swap(profilerChildThread);
+ }
+ if (profilerChildThread) {
+ if (profiler_is_active()) {
+ CrashReporter::AnnotateCrashReport(
+ CrashReporter::Annotation::ProfilerChildShutdownPhase,
+ "Profiling - Dispatching ShutdownProfilerChild"_ns);
+ profilerChildThread->Dispatch(
+ NewRunnableMethod<ProfileAndAdditionalInformation*>(
+ "ChildProfilerController::ShutdownProfilerChild", this,
+ &ChildProfilerController::ShutdownProfilerChild,
+ aOutShutdownProfileInformation),
+ NS_DISPATCH_NORMAL);
+ // Shut down the thread. This call will spin until all runnables
+ // (including the ShutdownProfilerChild runnable) have been processed.
+ profilerChildThread->Shutdown();
+ } else {
+ CrashReporter::AnnotateCrashReport(
+ CrashReporter::Annotation::ProfilerChildShutdownPhase,
+ "Not profiling - Running ShutdownProfilerChild"_ns);
+ // If we're not profiling, this operation will be very quick, so it can be
+ // done synchronously. This avoids having to manually shutdown the thread,
+ // which runs a risky inner event loop, see bug 1613798.
+ NS_DispatchAndSpinEventLoopUntilComplete(
+ "ChildProfilerController::ShutdownProfilerChild SYNC"_ns,
+ profilerChildThread,
+ NewRunnableMethod<ProfileAndAdditionalInformation*>(
+ "ChildProfilerController::ShutdownProfilerChild SYNC", this,
+ &ChildProfilerController::ShutdownProfilerChild, nullptr));
+ }
+ // At this point, `profilerChildThread` should be the last reference to the
+ // thread, so it will now get destroyed.
+ }
+}
+
+ChildProfilerController::~ChildProfilerController() {
+ MOZ_COUNT_DTOR(ChildProfilerController);
+
+#ifdef DEBUG
+ {
+ auto lock = mThread.Lock();
+ RefPtr<nsIThread>& lockedmThread = lock.ref();
+ MOZ_ASSERT(
+ !lockedmThread,
+ "Please call Shutdown before destroying ChildProfilerController");
+ }
+#endif
+ MOZ_ASSERT(!mProfilerChild);
+}
+
+void ChildProfilerController::SetupProfilerChild(
+ Endpoint<PProfilerChild>&& aEndpoint) {
+ {
+ auto lock = mThread.Lock();
+ RefPtr<nsIThread>& lockedmThread = lock.ref();
+ // We should be on the ProfilerChild thread. In rare cases, we could already
+ // be in shutdown, in which case mThread is null; we still need to continue,
+ // so that ShutdownProfilerChild can work on a valid mProfilerChild.
+ MOZ_RELEASE_ASSERT(!lockedmThread ||
+ lockedmThread == NS_GetCurrentThread());
+ }
+ MOZ_ASSERT(aEndpoint.IsValid());
+
+ mProfilerChild = new ProfilerChild();
+ Endpoint<PProfilerChild> endpoint = std::move(aEndpoint);
+
+ if (!endpoint.Bind(mProfilerChild)) {
+ MOZ_CRASH("Failed to bind ProfilerChild!");
+ }
+}
+
+void ChildProfilerController::ShutdownProfilerChild(
+ ProfileAndAdditionalInformation* aOutShutdownProfileInformation) {
+ const bool isProfiling = profiler_is_active();
+ if (aOutShutdownProfileInformation) {
+ CrashReporter::AnnotateCrashReport(
+ CrashReporter::Annotation::ProfilerChildShutdownPhase,
+ isProfiling ? "Profiling - GrabShutdownProfile"_ns
+ : "Not profiling - GrabShutdownProfile"_ns);
+ *aOutShutdownProfileInformation = mProfilerChild->GrabShutdownProfile();
+ }
+ CrashReporter::AnnotateCrashReport(
+ CrashReporter::Annotation::ProfilerChildShutdownPhase,
+ isProfiling ? "Profiling - Destroying ProfilerChild"_ns
+ : "Not profiling - Destroying ProfilerChild"_ns);
+ mProfilerChild->Destroy();
+ mProfilerChild = nullptr;
+ CrashReporter::AnnotateCrashReport(
+ CrashReporter::Annotation::ProfilerChildShutdownPhase,
+ isProfiling
+ ? "Profiling - ShutdownProfilerChild complete, waiting for thread shutdown"_ns
+ : "Not Profiling - ShutdownProfilerChild complete, waiting for thread shutdown"_ns);
+}
+
+} // namespace mozilla
diff --git a/tools/profiler/gecko/PProfiler.ipdl b/tools/profiler/gecko/PProfiler.ipdl
new file mode 100644
index 0000000000..65778b892c
--- /dev/null
+++ b/tools/profiler/gecko/PProfiler.ipdl
@@ -0,0 +1,44 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+include ProfilerTypes;
+
+namespace mozilla {
+
+// PProfiler is a top-level protocol. It is used to let the main process
+// control the Gecko Profiler in other processes, and request profiles from
+// those processes.
+// It is a top-level protocol so that its child endpoint can be on a
+// background thread, so that profiles can be gathered even if the main thread
+// is unresponsive.
+[ChildImpl=virtual, ParentImpl=virtual]
+async protocol PProfiler
+{
+child:
+ // The unused returned value is to have a promise we can await.
+ async Start(ProfilerInitParams params) returns (bool unused);
+ async EnsureStarted(ProfilerInitParams params) returns (bool unused);
+ async Stop() returns (bool unused);
+ async Pause() returns (bool unused);
+ async Resume() returns (bool unused);
+ async PauseSampling() returns (bool unused);
+ async ResumeSampling() returns (bool unused);
+
+ async WaitOnePeriodicSampling() returns (bool sampled);
+
+ async AwaitNextChunkManagerUpdate() returns (ProfileBufferChunkManagerUpdate update);
+ async DestroyReleasedChunksAtOrBefore(TimeStamp timeStamp);
+
+ // The returned shmem may contain an empty string (unavailable), an error
+ // message starting with '*', or a profile as a stringified JSON object.
+ async GatherProfile() returns (IPCProfileAndAdditionalInformation profileAndAdditionalInformation);
+ async GetGatherProfileProgress() returns (GatherProfileProgress progress);
+
+ async ClearAllPages();
+};
+
+} // namespace mozilla
+
diff --git a/tools/profiler/gecko/ProfilerChild.cpp b/tools/profiler/gecko/ProfilerChild.cpp
new file mode 100644
index 0000000000..db7ef99423
--- /dev/null
+++ b/tools/profiler/gecko/ProfilerChild.cpp
@@ -0,0 +1,565 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "ProfilerChild.h"
+
+#include "GeckoProfiler.h"
+#include "platform.h"
+#include "ProfilerCodeAddressService.h"
+#include "ProfilerControl.h"
+#include "ProfilerParent.h"
+
+#include "chrome/common/ipc_channel.h"
+#include "nsPrintfCString.h"
+#include "nsThreadUtils.h"
+
+#include <memory>
+
+namespace mozilla {
+
+/* static */ DataMutexBase<ProfilerChild::ProfilerChildAndUpdate,
+ baseprofiler::detail::BaseProfilerMutex>
+ ProfilerChild::sPendingChunkManagerUpdate{
+ "ProfilerChild::sPendingChunkManagerUpdate"};
+
+ProfilerChild::ProfilerChild()
+ : mThread(NS_GetCurrentThread()), mDestroyed(false) {
+ MOZ_COUNT_CTOR(ProfilerChild);
+}
+
+ProfilerChild::~ProfilerChild() { MOZ_COUNT_DTOR(ProfilerChild); }
+
+void ProfilerChild::ResolveChunkUpdate(
+ PProfilerChild::AwaitNextChunkManagerUpdateResolver& aResolve) {
+ MOZ_ASSERT(!!aResolve,
+ "ResolveChunkUpdate should only be called when there's a pending "
+ "resolver");
+ MOZ_ASSERT(
+ !mChunkManagerUpdate.IsNotUpdate(),
+ "ResolveChunkUpdate should only be called with a real or final update");
+ MOZ_ASSERT(
+ !mDestroyed,
+ "ResolveChunkUpdate should not be called if the actor was destroyed");
+ if (mChunkManagerUpdate.IsFinal()) {
+ // Final update, send a special "unreleased value", but don't clear the
+ // local copy so we know we got the final update.
+ std::move(aResolve)(ProfilerParent::MakeFinalUpdate());
+ } else {
+ // Optimization note: The ProfileBufferChunkManagerUpdate constructor takes
+ // the newly-released chunks nsTArray by reference-to-const, therefore
+ // constructing and then moving the array here would make a copy. So instead
+ // we first give it an empty array, and then we can write the data directly
+ // into the update's array.
+ ProfileBufferChunkManagerUpdate update{
+ mChunkManagerUpdate.UnreleasedBytes(),
+ mChunkManagerUpdate.ReleasedBytes(),
+ mChunkManagerUpdate.OldestDoneTimeStamp(),
+ {}};
+ update.newlyReleasedChunks().SetCapacity(
+ mChunkManagerUpdate.NewlyReleasedChunksRef().size());
+ for (const ProfileBufferControlledChunkManager::ChunkMetadata& chunk :
+ mChunkManagerUpdate.NewlyReleasedChunksRef()) {
+ update.newlyReleasedChunks().EmplaceBack(chunk.mDoneTimeStamp,
+ chunk.mBufferBytes);
+ }
+
+ std::move(aResolve)(update);
+
+ // Clear the update we just sent, so it's ready for later updates to be
+ // folded into it.
+ mChunkManagerUpdate.Clear();
+ }
+
+ // Discard the resolver, so it's empty next time there's a new request.
+ aResolve = nullptr;
+}
+
+void ProfilerChild::ProcessChunkManagerUpdate(
+ ProfileBufferControlledChunkManager::Update&& aUpdate) {
+ if (mDestroyed) {
+ return;
+ }
+ // Always store the data, it could be the final update.
+ mChunkManagerUpdate.Fold(std::move(aUpdate));
+ if (mAwaitNextChunkManagerUpdateResolver) {
+ // There is already a pending resolver, give it the info now.
+ ResolveChunkUpdate(mAwaitNextChunkManagerUpdateResolver);
+ }
+}
+
+/* static */ void ProfilerChild::ProcessPendingUpdate() {
+ auto lockedUpdate = sPendingChunkManagerUpdate.Lock();
+ if (!lockedUpdate->mProfilerChild || lockedUpdate->mUpdate.IsNotUpdate()) {
+ return;
+ }
+ lockedUpdate->mProfilerChild->mThread->Dispatch(NS_NewRunnableFunction(
+ "ProfilerChild::ProcessPendingUpdate", []() mutable {
+ auto lockedUpdate = sPendingChunkManagerUpdate.Lock();
+ if (!lockedUpdate->mProfilerChild ||
+ lockedUpdate->mUpdate.IsNotUpdate()) {
+ return;
+ }
+ lockedUpdate->mProfilerChild->ProcessChunkManagerUpdate(
+ std::move(lockedUpdate->mUpdate));
+ lockedUpdate->mUpdate.Clear();
+ }));
+}
+
+/* static */ bool ProfilerChild::IsLockedOnCurrentThread() {
+ return sPendingChunkManagerUpdate.Mutex().IsLockedOnCurrentThread();
+}
+
+void ProfilerChild::SetupChunkManager() {
+ mChunkManager = profiler_get_controlled_chunk_manager();
+ if (NS_WARN_IF(!mChunkManager)) {
+ return;
+ }
+
+ // Make sure there are no updates (from a previous run).
+ mChunkManagerUpdate.Clear();
+ {
+ auto lockedUpdate = sPendingChunkManagerUpdate.Lock();
+ lockedUpdate->mProfilerChild = this;
+ lockedUpdate->mUpdate.Clear();
+ }
+
+ mChunkManager->SetUpdateCallback(
+ [](ProfileBufferControlledChunkManager::Update&& aUpdate) {
+ // Updates from the chunk manager are stored for later processing.
+ // We avoid dispatching a task, as this could deadlock (if the queueing
+ // mutex is held elsewhere).
+ auto lockedUpdate = sPendingChunkManagerUpdate.Lock();
+ if (!lockedUpdate->mProfilerChild) {
+ return;
+ }
+ lockedUpdate->mUpdate.Fold(std::move(aUpdate));
+ });
+}
+
+void ProfilerChild::ResetChunkManager() {
+ if (!mChunkManager) {
+ return;
+ }
+
+ // We have a chunk manager, reset the callback, which will add a final
+ // pending update.
+ mChunkManager->SetUpdateCallback({});
+
+ // Clear the pending update.
+ auto lockedUpdate = sPendingChunkManagerUpdate.Lock();
+ lockedUpdate->mProfilerChild = nullptr;
+ lockedUpdate->mUpdate.Clear();
+ // And process a final update right now.
+ ProcessChunkManagerUpdate(
+ ProfileBufferControlledChunkManager::Update(nullptr));
+
+ mChunkManager = nullptr;
+ mAwaitNextChunkManagerUpdateResolver = nullptr;
+}
+
+mozilla::ipc::IPCResult ProfilerChild::RecvStart(
+ const ProfilerInitParams& params, StartResolver&& aResolve) {
+ nsTArray<const char*> filterArray;
+ for (size_t i = 0; i < params.filters().Length(); ++i) {
+ filterArray.AppendElement(params.filters()[i].get());
+ }
+
+ profiler_start(PowerOfTwo32(params.entries()), params.interval(),
+ params.features(), filterArray.Elements(),
+ filterArray.Length(), params.activeTabID(), params.duration());
+
+ SetupChunkManager();
+
+ aResolve(/* unused */ true);
+ return IPC_OK();
+}
+
+mozilla::ipc::IPCResult ProfilerChild::RecvEnsureStarted(
+ const ProfilerInitParams& params, EnsureStartedResolver&& aResolve) {
+ nsTArray<const char*> filterArray;
+ for (size_t i = 0; i < params.filters().Length(); ++i) {
+ filterArray.AppendElement(params.filters()[i].get());
+ }
+
+ profiler_ensure_started(PowerOfTwo32(params.entries()), params.interval(),
+ params.features(), filterArray.Elements(),
+ filterArray.Length(), params.activeTabID(),
+ params.duration());
+
+ SetupChunkManager();
+
+ aResolve(/* unused */ true);
+ return IPC_OK();
+}
+
+mozilla::ipc::IPCResult ProfilerChild::RecvStop(StopResolver&& aResolve) {
+ ResetChunkManager();
+ profiler_stop();
+ aResolve(/* unused */ true);
+ return IPC_OK();
+}
+
+mozilla::ipc::IPCResult ProfilerChild::RecvPause(PauseResolver&& aResolve) {
+ profiler_pause();
+ aResolve(/* unused */ true);
+ return IPC_OK();
+}
+
+mozilla::ipc::IPCResult ProfilerChild::RecvResume(ResumeResolver&& aResolve) {
+ profiler_resume();
+ aResolve(/* unused */ true);
+ return IPC_OK();
+}
+
+mozilla::ipc::IPCResult ProfilerChild::RecvPauseSampling(
+ PauseSamplingResolver&& aResolve) {
+ profiler_pause_sampling();
+ aResolve(/* unused */ true);
+ return IPC_OK();
+}
+
+mozilla::ipc::IPCResult ProfilerChild::RecvResumeSampling(
+ ResumeSamplingResolver&& aResolve) {
+ profiler_resume_sampling();
+ aResolve(/* unused */ true);
+ return IPC_OK();
+}
+
+mozilla::ipc::IPCResult ProfilerChild::RecvWaitOnePeriodicSampling(
+ WaitOnePeriodicSamplingResolver&& aResolve) {
+ std::shared_ptr<WaitOnePeriodicSamplingResolver> resolve =
+ std::make_shared<WaitOnePeriodicSamplingResolver>(std::move(aResolve));
+ if (!profiler_callback_after_sampling(
+ [self = RefPtr(this), resolve](SamplingState aSamplingState) mutable {
+ if (self->mDestroyed) {
+ return;
+ }
+ MOZ_RELEASE_ASSERT(self->mThread);
+ self->mThread->Dispatch(NS_NewRunnableFunction(
+ "nsProfiler::WaitOnePeriodicSampling result on main thread",
+ [resolve = std::move(resolve), aSamplingState]() {
+ (*resolve)(aSamplingState ==
+ SamplingState::SamplingCompleted ||
+ aSamplingState ==
+ SamplingState::NoStackSamplingCompleted);
+ }));
+ })) {
+ // Callback was not added (e.g., profiler is not running) and will never be
+ // invoked, so we need to resolve the promise here.
+ (*resolve)(false);
+ }
+ return IPC_OK();
+}
+
+mozilla::ipc::IPCResult ProfilerChild::RecvClearAllPages() {
+ profiler_clear_all_pages();
+ return IPC_OK();
+}
+
+mozilla::ipc::IPCResult ProfilerChild::RecvAwaitNextChunkManagerUpdate(
+ AwaitNextChunkManagerUpdateResolver&& aResolve) {
+ MOZ_ASSERT(!mDestroyed,
+ "Recv... should not be called if the actor was destroyed");
+ // Pick up pending updates if any.
+ {
+ auto lockedUpdate = sPendingChunkManagerUpdate.Lock();
+ if (lockedUpdate->mProfilerChild && !lockedUpdate->mUpdate.IsNotUpdate()) {
+ mChunkManagerUpdate.Fold(std::move(lockedUpdate->mUpdate));
+ lockedUpdate->mUpdate.Clear();
+ }
+ }
+ if (mChunkManagerUpdate.IsNotUpdate()) {
+ // No data yet, store the resolver for later.
+ mAwaitNextChunkManagerUpdateResolver = std::move(aResolve);
+ } else {
+ // We have data, send it now.
+ ResolveChunkUpdate(aResolve);
+ }
+ return IPC_OK();
+}
+
+mozilla::ipc::IPCResult ProfilerChild::RecvDestroyReleasedChunksAtOrBefore(
+ const TimeStamp& aTimeStamp) {
+ if (mChunkManager) {
+ mChunkManager->DestroyChunksAtOrBefore(aTimeStamp);
+ }
+ return IPC_OK();
+}
+
+struct GatherProfileThreadParameters
+ : public external::AtomicRefCounted<GatherProfileThreadParameters> {
+ MOZ_DECLARE_REFCOUNTED_TYPENAME(GatherProfileThreadParameters)
+
+ GatherProfileThreadParameters(
+ RefPtr<ProfilerChild> aProfilerChild,
+ RefPtr<ProgressLogger::SharedProgress> aProgress,
+ ProfilerChild::GatherProfileResolver&& aResolver)
+ : profilerChild(std::move(aProfilerChild)),
+ progress(std::move(aProgress)),
+ resolver(std::move(aResolver)) {}
+
+ RefPtr<ProfilerChild> profilerChild;
+
+ FailureLatchSource failureLatchSource;
+
+ // Separate RefPtr used when working on separate thread. This way, if the
+ // "ProfilerChild" thread decides to overwrite its mGatherProfileProgress with
+ // a new one, the work done here will still only use the old one.
+ RefPtr<ProgressLogger::SharedProgress> progress;
+
+ // Resolver for the GatherProfile promise. Must only be called on the
+ // "ProfilerChild" thread.
+ ProfilerChild::GatherProfileResolver resolver;
+};
+
+/* static */
+void ProfilerChild::GatherProfileThreadFunction(
+ void* already_AddRefedParameters) {
+ PR_SetCurrentThreadName("GatherProfileThread");
+
+ RefPtr<GatherProfileThreadParameters> parameters =
+ already_AddRefed<GatherProfileThreadParameters>{
+ static_cast<GatherProfileThreadParameters*>(
+ already_AddRefedParameters)};
+
+ ProgressLogger progressLogger(
+ parameters->progress, "Gather-profile thread started", "Profile sent");
+ using namespace mozilla::literals::ProportionValue_literals; // For `1_pc`.
+
+ auto writer =
+ MakeUnique<SpliceableChunkedJSONWriter>(parameters->failureLatchSource);
+ if (!profiler_get_profile_json(
+ *writer,
+ /* aSinceTime */ 0,
+ /* aIsShuttingDown */ false,
+ progressLogger.CreateSubLoggerFromTo(
+ 1_pc, "profiler_get_profile_json started", 99_pc,
+ "profiler_get_profile_json done"))) {
+ // Failed to get a profile, reset the writer pointer, so that we'll send a
+ // failure message.
+ writer.reset();
+ }
+
+ if (NS_WARN_IF(NS_FAILED(
+ parameters->profilerChild->mThread->Dispatch(NS_NewRunnableFunction(
+ "ProfilerChild::ProcessPendingUpdate",
+ [parameters,
+ // Forward progress logger to on-ProfilerChild-thread task, so
+ // that it doesn't get marked as 100% done when this off-thread
+ // function ends.
+ progressLogger = std::move(progressLogger),
+ writer = std::move(writer)]() mutable {
+ // We are now on the ProfilerChild thread, about to send the
+ // completed profile. Any incoming progress request will now be
+ // handled after this task ends, so updating the progress is now
+ // useless and we can just get rid of the progress storage.
+ if (parameters->profilerChild->mGatherProfileProgress ==
+ parameters->progress) {
+ // The ProfilerChild progress is still the one we know.
+ parameters->profilerChild->mGatherProfileProgress = nullptr;
+ }
+
+ // Shmem allocation and promise resolution must be made on the
+ // ProfilerChild thread, that's why this task was needed here.
+ mozilla::ipc::Shmem shmem;
+ if (writer) {
+ if (const size_t len = writer->ChunkedWriteFunc().Length();
+ len < UINT32_MAX) {
+ bool shmemSuccess = true;
+ const bool copySuccess =
+ writer->ChunkedWriteFunc()
+ .CopyDataIntoLazilyAllocatedBuffer(
+ [&](size_t allocationSize) -> char* {
+ MOZ_ASSERT(allocationSize == len + 1);
+ if (parameters->profilerChild->AllocShmem(
+ allocationSize, &shmem)) {
+ return shmem.get<char>();
+ }
+ shmemSuccess = false;
+ return nullptr;
+ });
+ if (!shmemSuccess || !copySuccess) {
+ const nsPrintfCString message(
+ (!shmemSuccess)
+ ? "*Could not create shmem for profile from pid "
+ "%u (%zu B)"
+ : "*Could not write profile from pid %u (%zu B)",
+ unsigned(profiler_current_process_id().ToNumber()),
+ len);
+ if (parameters->profilerChild->AllocShmem(
+ message.Length() + 1, &shmem)) {
+ strcpy(shmem.get<char>(), message.Data());
+ }
+ }
+ } else {
+ const nsPrintfCString message(
+ "*Profile from pid %u bigger (%zu) than shmem max "
+ "(%zu)",
+ unsigned(profiler_current_process_id().ToNumber()), len,
+ size_t(UINT32_MAX));
+ if (parameters->profilerChild->AllocShmem(
+ message.Length() + 1, &shmem)) {
+ strcpy(shmem.get<char>(), message.Data());
+ }
+ }
+ writer = nullptr;
+ } else {
+ // No profile.
+ const char* failure =
+ parameters->failureLatchSource.GetFailure();
+ const nsPrintfCString message(
+ "*Could not generate profile from pid %u%s%s",
+ unsigned(profiler_current_process_id().ToNumber()),
+ failure ? ", failure: " : "", failure ? failure : "");
+ if (parameters->profilerChild->AllocShmem(
+ message.Length() + 1, &shmem)) {
+ strcpy(shmem.get<char>(), message.Data());
+ }
+ }
+
+ SharedLibraryInfo sharedLibraryInfo =
+ SharedLibraryInfo::GetInfoForSelf();
+ parameters->resolver(IPCProfileAndAdditionalInformation{
+ shmem, Some(ProfileGenerationAdditionalInformation{
+ std::move(sharedLibraryInfo)})});
+ }))))) {
+ // Failed to dispatch the task to the ProfilerChild thread. The IPC cannot
+ // be resolved on this thread, so it will never be resolved!
+ // And it would be unsafe to modify mGatherProfileProgress; But the parent
+ // should notice that's it's not advancing anymore.
+ }
+}
+
+mozilla::ipc::IPCResult ProfilerChild::RecvGatherProfile(
+ GatherProfileResolver&& aResolve) {
+ mGatherProfileProgress = MakeRefPtr<ProgressLogger::SharedProgress>();
+ mGatherProfileProgress->SetProgress(ProportionValue{0.0},
+ "Received gather-profile request");
+
+ auto parameters = MakeRefPtr<GatherProfileThreadParameters>(
+ this, mGatherProfileProgress, std::move(aResolve));
+
+ // The GatherProfileThreadFunction thread function will cast its void*
+ // argument to already_AddRefed<GatherProfileThreadParameters>.
+ parameters.get()->AddRef();
+ PRThread* gatherProfileThread = PR_CreateThread(
+ PR_SYSTEM_THREAD, GatherProfileThreadFunction, parameters.get(),
+ PR_PRIORITY_NORMAL, PR_GLOBAL_THREAD, PR_UNJOINABLE_THREAD, 0);
+
+ if (!gatherProfileThread) {
+ // Failed to create and start worker thread, resolve with an empty profile.
+ mozilla::ipc::Shmem shmem;
+ if (AllocShmem(1, &shmem)) {
+ shmem.get<char>()[0] = '\0';
+ }
+ parameters->resolver(IPCProfileAndAdditionalInformation{shmem, Nothing()});
+ // And clean up.
+ parameters.get()->Release();
+ mGatherProfileProgress = nullptr;
+ }
+
+ return IPC_OK();
+}
+
+mozilla::ipc::IPCResult ProfilerChild::RecvGetGatherProfileProgress(
+ GetGatherProfileProgressResolver&& aResolve) {
+ if (mGatherProfileProgress) {
+ aResolve(GatherProfileProgress{
+ mGatherProfileProgress->Progress().ToUnderlyingType(),
+ nsCString(mGatherProfileProgress->LastLocation())});
+ } else {
+ aResolve(
+ GatherProfileProgress{ProportionValue::MakeInvalid().ToUnderlyingType(),
+ nsCString("No gather-profile in progress")});
+ }
+ return IPC_OK();
+}
+
+void ProfilerChild::ActorDestroy(ActorDestroyReason aActorDestroyReason) {
+ mDestroyed = true;
+}
+
+void ProfilerChild::Destroy() {
+ ResetChunkManager();
+ if (!mDestroyed) {
+ Close();
+ }
+}
+
+ProfileAndAdditionalInformation ProfilerChild::GrabShutdownProfile() {
+ LOG("GrabShutdownProfile");
+
+ UniquePtr<ProfilerCodeAddressService> service =
+ profiler_code_address_service_for_presymbolication();
+ FailureLatchSource failureLatch;
+ SpliceableChunkedJSONWriter writer{failureLatch};
+ writer.Start();
+ auto rv = profiler_stream_json_for_this_process(
+ writer, /* aSinceTime */ 0,
+ /* aIsShuttingDown */ true, service.get(), ProgressLogger{});
+ if (rv.isErr()) {
+ const char* failure = writer.GetFailure();
+ return ProfileAndAdditionalInformation(
+ nsPrintfCString("*Profile unavailable for pid %u%s%s",
+ unsigned(profiler_current_process_id().ToNumber()),
+ failure ? ", failure: " : "", failure ? failure : ""));
+ }
+
+ auto additionalInfo = rv.unwrap();
+
+ writer.StartArrayProperty("processes");
+ writer.EndArray();
+ writer.End();
+
+ const size_t len = writer.ChunkedWriteFunc().Length();
+ // This string and information are destined to be sent as a shutdown profile,
+ // which is limited by the maximum IPC message size.
+ // TODO: IPC to change to shmem (bug 1780330), raising this limit to
+ // JS::MaxStringLength.
+ if (len + additionalInfo.SizeOf() >=
+ size_t(IPC::Channel::kMaximumMessageSize)) {
+ return ProfileAndAdditionalInformation(
+ nsPrintfCString("*Profile from pid %u bigger (%zu) than IPC max (%zu)",
+ unsigned(profiler_current_process_id().ToNumber()), len,
+ size_t(IPC::Channel::kMaximumMessageSize)));
+ }
+
+ nsCString profileCString;
+ if (!profileCString.SetLength(len, fallible)) {
+ return ProfileAndAdditionalInformation(nsPrintfCString(
+ "*Could not allocate %zu bytes for profile from pid %u", len,
+ unsigned(profiler_current_process_id().ToNumber())));
+ }
+ MOZ_ASSERT(*(profileCString.Data() + len) == '\0',
+ "We expected a null at the end of the string buffer, to be "
+ "rewritten by CopyDataIntoLazilyAllocatedBuffer");
+
+ char* const profileBeginWriting = profileCString.BeginWriting();
+ if (!profileBeginWriting) {
+ return ProfileAndAdditionalInformation(
+ nsPrintfCString("*Could not write profile from pid %u",
+ unsigned(profiler_current_process_id().ToNumber())));
+ }
+
+ // Here, we have enough space reserved in `profileCString`, starting at
+ // `profileBeginWriting`, copy the JSON profile there.
+ if (!writer.ChunkedWriteFunc().CopyDataIntoLazilyAllocatedBuffer(
+ [&](size_t aBufferLen) -> char* {
+ MOZ_RELEASE_ASSERT(aBufferLen == len + 1);
+ return profileBeginWriting;
+ })) {
+ return ProfileAndAdditionalInformation(
+ nsPrintfCString("*Could not copy profile from pid %u",
+ unsigned(profiler_current_process_id().ToNumber())));
+ }
+ MOZ_ASSERT(*(profileCString.Data() + len) == '\0',
+ "We still expected a null at the end of the string buffer");
+
+ return ProfileAndAdditionalInformation{std::move(profileCString),
+ std::move(additionalInfo)};
+}
+
+} // namespace mozilla
diff --git a/tools/profiler/gecko/ProfilerIOInterposeObserver.cpp b/tools/profiler/gecko/ProfilerIOInterposeObserver.cpp
new file mode 100644
index 0000000000..cf33789f69
--- /dev/null
+++ b/tools/profiler/gecko/ProfilerIOInterposeObserver.cpp
@@ -0,0 +1,216 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "ProfilerIOInterposeObserver.h"
+#include "GeckoProfiler.h"
+
+using namespace mozilla;
+
+/* static */
+ProfilerIOInterposeObserver& ProfilerIOInterposeObserver::GetInstance() {
+ static ProfilerIOInterposeObserver sProfilerIOInterposeObserver;
+ return sProfilerIOInterposeObserver;
+}
+
+namespace geckoprofiler::markers {
+struct FileIOMarker {
+ static constexpr Span<const char> MarkerTypeName() {
+ return MakeStringSpan("FileIO");
+ }
+ static void StreamJSONMarkerData(baseprofiler::SpliceableJSONWriter& aWriter,
+ const ProfilerString8View& aOperation,
+ const ProfilerString8View& aSource,
+ const ProfilerString8View& aFilename,
+ MarkerThreadId aOperationThreadId) {
+ aWriter.StringProperty("operation", aOperation);
+ aWriter.StringProperty("source", aSource);
+ if (aFilename.Length() != 0) {
+ aWriter.StringProperty("filename", aFilename);
+ }
+ if (!aOperationThreadId.IsUnspecified()) {
+ // Tech note: If `ToNumber()` returns a uint64_t, the conversion to
+ // int64_t is "implementation-defined" before C++20. This is acceptable
+ // here, because this is a one-way conversion to a unique identifier
+ // that's used to visually separate data by thread on the front-end.
+ aWriter.IntProperty(
+ "threadId",
+ static_cast<int64_t>(aOperationThreadId.ThreadId().ToNumber()));
+ }
+ }
+ static MarkerSchema MarkerTypeDisplay() {
+ using MS = MarkerSchema;
+ MS schema{MS::Location::MarkerChart, MS::Location::MarkerTable,
+ MS::Location::TimelineFileIO};
+ schema.AddKeyLabelFormatSearchable("operation", "Operation",
+ MS::Format::String,
+ MS::Searchable::Searchable);
+ schema.AddKeyLabelFormatSearchable("source", "Source", MS::Format::String,
+ MS::Searchable::Searchable);
+ schema.AddKeyLabelFormatSearchable("filename", "Filename",
+ MS::Format::FilePath,
+ MS::Searchable::Searchable);
+ schema.AddKeyLabelFormatSearchable("threadId", "Thread ID",
+ MS::Format::String,
+ MS::Searchable::Searchable);
+ return schema;
+ }
+};
+} // namespace geckoprofiler::markers
+
+static auto GetFilename(IOInterposeObserver::Observation& aObservation) {
+ AUTO_PROFILER_STATS(IO_filename);
+ constexpr size_t scExpectedMaxFilename = 512;
+ nsAutoStringN<scExpectedMaxFilename> filename16;
+ aObservation.Filename(filename16);
+ nsAutoCStringN<scExpectedMaxFilename> filename8;
+ if (!filename16.IsEmpty()) {
+ CopyUTF16toUTF8(filename16, filename8);
+ }
+ return filename8;
+}
+
+void ProfilerIOInterposeObserver::Observe(Observation& aObservation) {
+ if (profiler_is_locked_on_current_thread()) {
+ // Don't observe I/Os originating from the profiler itself (when internally
+ // locked) to avoid deadlocks when calling profiler functions.
+ AUTO_PROFILER_STATS(IO_profiler_locked);
+ return;
+ }
+
+ Maybe<uint32_t> maybeFeatures = profiler_features_if_active_and_unpaused();
+ if (maybeFeatures.isNothing()) {
+ return;
+ }
+ uint32_t features = *maybeFeatures;
+
+ if (!profiler_thread_is_being_profiled_for_markers(
+ profiler_main_thread_id()) &&
+ !profiler_thread_is_being_profiled_for_markers()) {
+ return;
+ }
+
+ AUTO_PROFILER_LABEL("ProfilerIOInterposeObserver", PROFILER);
+ if (IsMainThread()) {
+ // This is the main thread.
+ // Capture a marker if any "IO" feature is on.
+ // If it's not being profiled, we have nowhere to store FileIO markers.
+ if (!profiler_thread_is_being_profiled_for_markers() ||
+ !(features & ProfilerFeature::MainThreadIO)) {
+ return;
+ }
+ AUTO_PROFILER_STATS(IO_MT);
+ nsAutoCString type{aObservation.FileType()};
+ type.AppendLiteral("IO");
+
+ // Store the marker in the current thread.
+ PROFILER_MARKER(
+ type, OTHER,
+ MarkerOptions(
+ MarkerTiming::Interval(aObservation.Start(), aObservation.End()),
+ MarkerStack::Capture()),
+ FileIOMarker,
+ // aOperation
+ ProfilerString8View::WrapNullTerminatedString(
+ aObservation.ObservedOperationString()),
+ // aSource
+ ProfilerString8View::WrapNullTerminatedString(aObservation.Reference()),
+ // aFilename
+ GetFilename(aObservation),
+ // aOperationThreadId - Do not include a thread ID, as it's the same as
+ // the markers. Only include this field when the marker is being sent
+ // from another thread.
+ MarkerThreadId{});
+
+ } else if (profiler_thread_is_being_profiled_for_markers()) {
+ // This is a non-main thread that is being profiled.
+ if (!(features & ProfilerFeature::FileIO)) {
+ return;
+ }
+ AUTO_PROFILER_STATS(IO_off_MT);
+
+ nsAutoCString type{aObservation.FileType()};
+ type.AppendLiteral("IO");
+
+ // Share a backtrace between the marker on this thread, and the marker on
+ // the main thread.
+ UniquePtr<ProfileChunkedBuffer> backtrace = profiler_capture_backtrace();
+
+ // Store the marker in the current thread.
+ PROFILER_MARKER(
+ type, OTHER,
+ MarkerOptions(
+ MarkerTiming::Interval(aObservation.Start(), aObservation.End()),
+ backtrace ? MarkerStack::UseBacktrace(*backtrace)
+ : MarkerStack::NoStack()),
+ FileIOMarker,
+ // aOperation
+ ProfilerString8View::WrapNullTerminatedString(
+ aObservation.ObservedOperationString()),
+ // aSource
+ ProfilerString8View::WrapNullTerminatedString(aObservation.Reference()),
+ // aFilename
+ GetFilename(aObservation),
+ // aOperationThreadId - Do not include a thread ID, as it's the same as
+ // the markers. Only include this field when the marker is being sent
+ // from another thread.
+ MarkerThreadId{});
+
+ // Store the marker in the main thread as well, with a distinct marker name
+ // and thread id.
+ type.AppendLiteral(" (non-main thread)");
+ PROFILER_MARKER(
+ type, OTHER,
+ MarkerOptions(
+ MarkerTiming::Interval(aObservation.Start(), aObservation.End()),
+ backtrace ? MarkerStack::UseBacktrace(*backtrace)
+ : MarkerStack::NoStack(),
+ // This is the important piece that changed.
+ // It will send a marker to the main thread.
+ MarkerThreadId::MainThread()),
+ FileIOMarker,
+ // aOperation
+ ProfilerString8View::WrapNullTerminatedString(
+ aObservation.ObservedOperationString()),
+ // aSource
+ ProfilerString8View::WrapNullTerminatedString(aObservation.Reference()),
+ // aFilename
+ GetFilename(aObservation),
+ // aOperationThreadId - Include the thread ID in the payload.
+ MarkerThreadId::CurrentThread());
+
+ } else {
+ // This is a thread that is not being profiled. We still want to capture
+ // file I/Os (to the main thread) if the "FileIOAll" feature is on.
+ if (!(features & ProfilerFeature::FileIOAll)) {
+ return;
+ }
+ AUTO_PROFILER_STATS(IO_other);
+ nsAutoCString type{aObservation.FileType()};
+ if (profiler_is_active_and_thread_is_registered()) {
+ type.AppendLiteral("IO (non-profiled thread)");
+ } else {
+ type.AppendLiteral("IO (unregistered thread)");
+ }
+
+ // Only store this marker on the main thread, as this thread was not being
+ // profiled.
+ PROFILER_MARKER(
+ type, OTHER,
+ MarkerOptions(
+ MarkerTiming::Interval(aObservation.Start(), aObservation.End()),
+ MarkerStack::Capture(),
+ // Store this marker on the main thread.
+ MarkerThreadId::MainThread()),
+ FileIOMarker,
+ // aOperation
+ ProfilerString8View::WrapNullTerminatedString(
+ aObservation.ObservedOperationString()),
+ // aSource
+ ProfilerString8View::WrapNullTerminatedString(aObservation.Reference()),
+ // aFilename
+ GetFilename(aObservation),
+ // aOperationThreadId - Note which thread this marker is coming from.
+ MarkerThreadId::CurrentThread());
+ }
+}
diff --git a/tools/profiler/gecko/ProfilerIOInterposeObserver.h b/tools/profiler/gecko/ProfilerIOInterposeObserver.h
new file mode 100644
index 0000000000..9e22a34f15
--- /dev/null
+++ b/tools/profiler/gecko/ProfilerIOInterposeObserver.h
@@ -0,0 +1,32 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef PROFILERIOINTERPOSEOBSERVER_H
+#define PROFILERIOINTERPOSEOBSERVER_H
+
+#include "mozilla/IOInterposer.h"
+#include "nsISupportsImpl.h"
+
+namespace mozilla {
+
+/**
+ * This class is the observer that calls into the profiler whenever
+ * main thread I/O occurs.
+ */
+class ProfilerIOInterposeObserver final : public IOInterposeObserver {
+ NS_INLINE_DECL_THREADSAFE_REFCOUNTING(ProfilerIOInterposeObserver)
+
+ public:
+ static ProfilerIOInterposeObserver& GetInstance();
+
+ virtual void Observe(Observation& aObservation) override;
+
+ private:
+ ProfilerIOInterposeObserver() = default;
+ virtual ~ProfilerIOInterposeObserver() {}
+};
+
+} // namespace mozilla
+
+#endif // PROFILERIOINTERPOSEOBSERVER_H
diff --git a/tools/profiler/gecko/ProfilerParent.cpp b/tools/profiler/gecko/ProfilerParent.cpp
new file mode 100644
index 0000000000..83bce6d982
--- /dev/null
+++ b/tools/profiler/gecko/ProfilerParent.cpp
@@ -0,0 +1,1002 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "ProfilerParent.h"
+
+#ifdef MOZ_GECKO_PROFILER
+# include "nsProfiler.h"
+# include "platform.h"
+#endif
+
+#include "GeckoProfiler.h"
+#include "ProfilerControl.h"
+#include "mozilla/BaseAndGeckoProfilerDetail.h"
+#include "mozilla/BaseProfilerDetail.h"
+#include "mozilla/ClearOnShutdown.h"
+#include "mozilla/DataMutex.h"
+#include "mozilla/IOInterposer.h"
+#include "mozilla/ipc/Endpoint.h"
+#include "mozilla/Maybe.h"
+#include "mozilla/ProfileBufferControlledChunkManager.h"
+#include "mozilla/RefPtr.h"
+#include "mozilla/Unused.h"
+#include "nsTArray.h"
+#include "nsThreadUtils.h"
+
+#include <utility>
+
+namespace mozilla {
+
+using namespace ipc;
+
+/* static */
+Endpoint<PProfilerChild> ProfilerParent::CreateForProcess(
+ base::ProcessId aOtherPid) {
+ MOZ_RELEASE_ASSERT(NS_IsMainThread());
+ Endpoint<PProfilerChild> child;
+#ifdef MOZ_GECKO_PROFILER
+ Endpoint<PProfilerParent> parent;
+ nsresult rv = PProfiler::CreateEndpoints(&parent, &child);
+
+ if (NS_FAILED(rv)) {
+ MOZ_CRASH("Failed to create top level actor for PProfiler!");
+ }
+
+ RefPtr<ProfilerParent> actor = new ProfilerParent(aOtherPid);
+ if (!parent.Bind(actor)) {
+ MOZ_CRASH("Failed to bind parent actor for PProfiler!");
+ }
+
+ actor->Init();
+#endif
+
+ return child;
+}
+
+#ifdef MOZ_GECKO_PROFILER
+
+class ProfilerParentTracker;
+
+// This class is responsible for gathering updates from chunk managers in
+// different process, and request for the oldest chunks to be destroyed whenever
+// the given memory limit is reached.
+class ProfileBufferGlobalController final {
+ public:
+ explicit ProfileBufferGlobalController(size_t aMaximumBytes);
+
+ ~ProfileBufferGlobalController();
+
+ void HandleChildChunkManagerUpdate(
+ base::ProcessId aProcessId,
+ ProfileBufferControlledChunkManager::Update&& aUpdate);
+
+ static bool IsLockedOnCurrentThread();
+
+ private:
+ // Calls aF(Json::Value&).
+ template <typename F>
+ void Log(F&& aF);
+
+ static void LogUpdateChunks(Json::Value& updates, base::ProcessId aProcessId,
+ const TimeStamp& aTimeStamp, int aChunkDiff);
+ void LogUpdate(base::ProcessId aProcessId,
+ const ProfileBufferControlledChunkManager::Update& aUpdate);
+ void LogDeletion(base::ProcessId aProcessId, const TimeStamp& aTimeStamp);
+
+ void HandleChunkManagerNonFinalUpdate(
+ base::ProcessId aProcessId,
+ ProfileBufferControlledChunkManager::Update&& aUpdate,
+ ProfileBufferControlledChunkManager& aParentChunkManager);
+
+ const size_t mMaximumBytes;
+
+ const base::ProcessId mParentProcessId = base::GetCurrentProcId();
+
+ struct ParentChunkManagerAndPendingUpdate {
+ ProfileBufferControlledChunkManager* mChunkManager = nullptr;
+ ProfileBufferControlledChunkManager::Update mPendingUpdate;
+ };
+
+ static DataMutexBase<ParentChunkManagerAndPendingUpdate,
+ baseprofiler::detail::BaseProfilerMutex>
+ sParentChunkManagerAndPendingUpdate;
+
+ size_t mUnreleasedTotalBytes = 0;
+
+ struct PidAndBytes {
+ base::ProcessId mProcessId;
+ size_t mBytes;
+
+ // For searching and sorting.
+ bool operator==(base::ProcessId aSearchedProcessId) const {
+ return mProcessId == aSearchedProcessId;
+ }
+ bool operator==(const PidAndBytes& aOther) const {
+ return mProcessId == aOther.mProcessId;
+ }
+ bool operator<(base::ProcessId aSearchedProcessId) const {
+ return mProcessId < aSearchedProcessId;
+ }
+ bool operator<(const PidAndBytes& aOther) const {
+ return mProcessId < aOther.mProcessId;
+ }
+ };
+ using PidAndBytesArray = nsTArray<PidAndBytes>;
+ PidAndBytesArray mUnreleasedBytesByPid;
+
+ size_t mReleasedTotalBytes = 0;
+
+ struct TimeStampAndBytesAndPid {
+ TimeStamp mTimeStamp;
+ size_t mBytes;
+ base::ProcessId mProcessId;
+
+ // For searching and sorting.
+ bool operator==(const TimeStampAndBytesAndPid& aOther) const {
+ // Sort first by timestamps, and then by pid in rare cases with the same
+ // timestamps.
+ return mTimeStamp == aOther.mTimeStamp && mProcessId == aOther.mProcessId;
+ }
+ bool operator<(const TimeStampAndBytesAndPid& aOther) const {
+ // Sort first by timestamps, and then by pid in rare cases with the same
+ // timestamps.
+ return mTimeStamp < aOther.mTimeStamp ||
+ (MOZ_UNLIKELY(mTimeStamp == aOther.mTimeStamp) &&
+ mProcessId < aOther.mProcessId);
+ }
+ };
+ using TimeStampAndBytesAndPidArray = nsTArray<TimeStampAndBytesAndPid>;
+ TimeStampAndBytesAndPidArray mReleasedChunksByTime;
+};
+
+/* static */
+DataMutexBase<ProfileBufferGlobalController::ParentChunkManagerAndPendingUpdate,
+ baseprofiler::detail::BaseProfilerMutex>
+ ProfileBufferGlobalController::sParentChunkManagerAndPendingUpdate{
+ "ProfileBufferGlobalController::sParentChunkManagerAndPendingUpdate"};
+
+// This singleton class tracks live ProfilerParent's (meaning there's a current
+// connection with a child process).
+// It also knows when the local profiler is running.
+// And when both the profiler is running and at least one child is present, it
+// creates a ProfileBufferGlobalController and forwards chunk updates to it.
+class ProfilerParentTracker final {
+ public:
+ static void StartTracking(ProfilerParent* aParent);
+ static void StopTracking(ProfilerParent* aParent);
+
+ static void ProfilerStarted(uint32_t aEntries);
+ static void ProfilerWillStopIfStarted();
+
+ // Number of non-destroyed tracked ProfilerParents.
+ static size_t ProfilerParentCount();
+
+ template <typename FuncType>
+ static void Enumerate(FuncType&& aIterFunc);
+
+ template <typename FuncType>
+ static void ForChild(base::ProcessId aChildPid, FuncType&& aIterFunc);
+
+ static void ForwardChildChunkManagerUpdate(
+ base::ProcessId aProcessId,
+ ProfileBufferControlledChunkManager::Update&& aUpdate);
+
+ ProfilerParentTracker();
+ ~ProfilerParentTracker();
+
+ private:
+ // Get the singleton instance; Create one on the first request, unless we are
+ // past XPCOMShutdownThreads, which is when it should get destroyed.
+ static ProfilerParentTracker* GetInstance();
+
+ // List of parents for currently-connected child processes.
+ nsTArray<ProfilerParent*> mProfilerParents;
+
+ // If non-0, the parent profiler is running, with this limit (in number of
+ // entries.) This is needed here, because the parent profiler may start
+ // running before child processes are known (e.g., startup profiling).
+ uint32_t mEntries = 0;
+
+ // When the profiler is running and there is at least one parent-child
+ // connection, this is the controller that should receive chunk updates.
+ Maybe<ProfileBufferGlobalController> mMaybeController;
+};
+
+static const Json::StaticString logRoot{"bufferGlobalController"};
+
+template <typename F>
+void ProfileBufferGlobalController::Log(F&& aF) {
+ ProfilingLog::Access([&](Json::Value& aLog) {
+ Json::Value& root = aLog[logRoot];
+ if (!root.isObject()) {
+ root = Json::Value(Json::objectValue);
+ root[Json::StaticString{"logBegin" TIMESTAMP_JSON_SUFFIX}] =
+ ProfilingLog::Timestamp();
+ }
+ std::forward<F>(aF)(root);
+ });
+}
+
+/* static */
+void ProfileBufferGlobalController::LogUpdateChunks(Json::Value& updates,
+ base::ProcessId aProcessId,
+ const TimeStamp& aTimeStamp,
+ int aChunkDiff) {
+ MOZ_ASSERT(updates.isArray());
+ Json::Value row{Json::arrayValue};
+ row.append(Json::Value{Json::UInt64(aProcessId)});
+ row.append(ProfilingLog::Timestamp(aTimeStamp));
+ row.append(Json::Value{Json::Int(aChunkDiff)});
+ updates.append(std::move(row));
+}
+
+void ProfileBufferGlobalController::LogUpdate(
+ base::ProcessId aProcessId,
+ const ProfileBufferControlledChunkManager::Update& aUpdate) {
+ Log([&](Json::Value& aRoot) {
+ Json::Value& updates = aRoot[Json::StaticString{"updates"}];
+ if (!updates.isArray()) {
+ aRoot[Json::StaticString{"updatesSchema"}] =
+ Json::StaticString{"0: pid, 1: chunkRelease_TSms, 3: chunkDiff"};
+ updates = Json::Value{Json::arrayValue};
+ }
+ if (aUpdate.IsFinal()) {
+ LogUpdateChunks(updates, aProcessId, TimeStamp{}, 0);
+ } else if (!aUpdate.IsNotUpdate()) {
+ for (const auto& chunk : aUpdate.NewlyReleasedChunksRef()) {
+ LogUpdateChunks(updates, aProcessId, chunk.mDoneTimeStamp, 1);
+ }
+ }
+ });
+}
+
+void ProfileBufferGlobalController::LogDeletion(base::ProcessId aProcessId,
+ const TimeStamp& aTimeStamp) {
+ Log([&](Json::Value& aRoot) {
+ Json::Value& updates = aRoot[Json::StaticString{"updates"}];
+ if (!updates.isArray()) {
+ updates = Json::Value{Json::arrayValue};
+ }
+ LogUpdateChunks(updates, aProcessId, aTimeStamp, -1);
+ });
+}
+
+ProfileBufferGlobalController::ProfileBufferGlobalController(
+ size_t aMaximumBytes)
+ : mMaximumBytes(aMaximumBytes) {
+ MOZ_RELEASE_ASSERT(NS_IsMainThread());
+
+ Log([](Json::Value& aRoot) {
+ aRoot[Json::StaticString{"controllerCreationTime" TIMESTAMP_JSON_SUFFIX}] =
+ ProfilingLog::Timestamp();
+ });
+
+ // This is the local chunk manager for this parent process, so updates can be
+ // handled here.
+ ProfileBufferControlledChunkManager* parentChunkManager =
+ profiler_get_controlled_chunk_manager();
+
+ if (NS_WARN_IF(!parentChunkManager)) {
+ Log([](Json::Value& aRoot) {
+ aRoot[Json::StaticString{"controllerCreationFailureReason"}] =
+ "No parent chunk manager";
+ });
+ return;
+ }
+
+ {
+ auto lockedParentChunkManagerAndPendingUpdate =
+ sParentChunkManagerAndPendingUpdate.Lock();
+ lockedParentChunkManagerAndPendingUpdate->mChunkManager =
+ parentChunkManager;
+ }
+
+ parentChunkManager->SetUpdateCallback(
+ [this](ProfileBufferControlledChunkManager::Update&& aUpdate) {
+ MOZ_ASSERT(!aUpdate.IsNotUpdate(),
+ "Update callback should never be given a non-update");
+ auto lockedParentChunkManagerAndPendingUpdate =
+ sParentChunkManagerAndPendingUpdate.Lock();
+ if (aUpdate.IsFinal()) {
+ // Final update of the parent.
+ // We cannot keep the chunk manager, and there's no point handling
+ // updates anymore. Do some cleanup now, to free resources before
+ // we're destroyed.
+ lockedParentChunkManagerAndPendingUpdate->mChunkManager = nullptr;
+ lockedParentChunkManagerAndPendingUpdate->mPendingUpdate.Clear();
+ mUnreleasedTotalBytes = 0;
+ mUnreleasedBytesByPid.Clear();
+ mReleasedTotalBytes = 0;
+ mReleasedChunksByTime.Clear();
+ return;
+ }
+ if (!lockedParentChunkManagerAndPendingUpdate->mChunkManager) {
+ // No chunk manager, ignore updates.
+ return;
+ }
+ // Special handling of parent non-final updates:
+ // These updates are coming from *this* process, and may originate from
+ // scopes in any thread where any lock is held, so using other locks (to
+ // e.g., dispatch tasks or send IPCs) could trigger a deadlock. Instead,
+ // parent updates are stored locally and handled when the next
+ // non-parent update needs handling, see HandleChildChunkManagerUpdate.
+ lockedParentChunkManagerAndPendingUpdate->mPendingUpdate.Fold(
+ std::move(aUpdate));
+ });
+}
+
+ProfileBufferGlobalController ::~ProfileBufferGlobalController() {
+ MOZ_RELEASE_ASSERT(NS_IsMainThread());
+ // Extract the parent chunk manager (if still set).
+ // This means any update after this will be ignored.
+ ProfileBufferControlledChunkManager* parentChunkManager = []() {
+ auto lockedParentChunkManagerAndPendingUpdate =
+ sParentChunkManagerAndPendingUpdate.Lock();
+ lockedParentChunkManagerAndPendingUpdate->mPendingUpdate.Clear();
+ return std::exchange(
+ lockedParentChunkManagerAndPendingUpdate->mChunkManager, nullptr);
+ }();
+ if (parentChunkManager) {
+ // We had not received a final update yet, so the chunk manager is still
+ // valid. Reset the callback in the chunk manager, this will immediately
+ // invoke the callback with the final empty update; see handling above.
+ parentChunkManager->SetUpdateCallback({});
+ }
+}
+
+void ProfileBufferGlobalController::HandleChildChunkManagerUpdate(
+ base::ProcessId aProcessId,
+ ProfileBufferControlledChunkManager::Update&& aUpdate) {
+ MOZ_RELEASE_ASSERT(NS_IsMainThread());
+
+ MOZ_ASSERT(aProcessId != mParentProcessId);
+
+ MOZ_ASSERT(!aUpdate.IsNotUpdate(),
+ "HandleChildChunkManagerUpdate should not be given a non-update");
+
+ auto lockedParentChunkManagerAndPendingUpdate =
+ sParentChunkManagerAndPendingUpdate.Lock();
+ if (!lockedParentChunkManagerAndPendingUpdate->mChunkManager) {
+ // No chunk manager, ignore updates.
+ return;
+ }
+
+ if (aUpdate.IsFinal()) {
+ // Final update in a child process, remove all traces of that process.
+ LogUpdate(aProcessId, aUpdate);
+ size_t index = mUnreleasedBytesByPid.BinaryIndexOf(aProcessId);
+ if (index != PidAndBytesArray::NoIndex) {
+ // We already have a value for this pid.
+ PidAndBytes& pidAndBytes = mUnreleasedBytesByPid[index];
+ mUnreleasedTotalBytes -= pidAndBytes.mBytes;
+ mUnreleasedBytesByPid.RemoveElementAt(index);
+ }
+
+ size_t released = 0;
+ mReleasedChunksByTime.RemoveElementsBy(
+ [&released, aProcessId](const auto& chunk) {
+ const bool match = chunk.mProcessId == aProcessId;
+ if (match) {
+ released += chunk.mBytes;
+ }
+ return match;
+ });
+ if (released != 0) {
+ mReleasedTotalBytes -= released;
+ }
+
+ // Total can only have gone down, so there's no need to check the limit.
+ return;
+ }
+
+ // Non-final update in child process.
+
+ // Before handling the child update, we may have pending updates from the
+ // parent, which can be processed now since we're in an IPC callback outside
+ // of any profiler-related scope.
+ if (!lockedParentChunkManagerAndPendingUpdate->mPendingUpdate.IsNotUpdate()) {
+ MOZ_ASSERT(
+ !lockedParentChunkManagerAndPendingUpdate->mPendingUpdate.IsFinal());
+ HandleChunkManagerNonFinalUpdate(
+ mParentProcessId,
+ std::move(lockedParentChunkManagerAndPendingUpdate->mPendingUpdate),
+ *lockedParentChunkManagerAndPendingUpdate->mChunkManager);
+ lockedParentChunkManagerAndPendingUpdate->mPendingUpdate.Clear();
+ }
+
+ HandleChunkManagerNonFinalUpdate(
+ aProcessId, std::move(aUpdate),
+ *lockedParentChunkManagerAndPendingUpdate->mChunkManager);
+}
+
+/* static */
+bool ProfileBufferGlobalController::IsLockedOnCurrentThread() {
+ return sParentChunkManagerAndPendingUpdate.Mutex().IsLockedOnCurrentThread();
+}
+
+void ProfileBufferGlobalController::HandleChunkManagerNonFinalUpdate(
+ base::ProcessId aProcessId,
+ ProfileBufferControlledChunkManager::Update&& aUpdate,
+ ProfileBufferControlledChunkManager& aParentChunkManager) {
+ MOZ_ASSERT(!aUpdate.IsFinal());
+ LogUpdate(aProcessId, aUpdate);
+
+ size_t index = mUnreleasedBytesByPid.BinaryIndexOf(aProcessId);
+ if (index != PidAndBytesArray::NoIndex) {
+ // We already have a value for this pid.
+ PidAndBytes& pidAndBytes = mUnreleasedBytesByPid[index];
+ mUnreleasedTotalBytes =
+ mUnreleasedTotalBytes - pidAndBytes.mBytes + aUpdate.UnreleasedBytes();
+ pidAndBytes.mBytes = aUpdate.UnreleasedBytes();
+ } else {
+ // New pid.
+ mUnreleasedBytesByPid.InsertElementSorted(
+ PidAndBytes{aProcessId, aUpdate.UnreleasedBytes()});
+ mUnreleasedTotalBytes += aUpdate.UnreleasedBytes();
+ }
+
+ size_t destroyedReleased = 0;
+ if (!aUpdate.OldestDoneTimeStamp().IsNull()) {
+ size_t i = 0;
+ for (; i < mReleasedChunksByTime.Length(); ++i) {
+ if (mReleasedChunksByTime[i].mTimeStamp >=
+ aUpdate.OldestDoneTimeStamp()) {
+ break;
+ }
+ }
+ // Here, i is the index of the first item that's at or after
+ // aUpdate.mOldestDoneTimeStamp, so chunks from aProcessId before that have
+ // been destroyed.
+ while (i != 0) {
+ --i;
+ const TimeStampAndBytesAndPid& item = mReleasedChunksByTime[i];
+ if (item.mProcessId == aProcessId) {
+ destroyedReleased += item.mBytes;
+ mReleasedChunksByTime.RemoveElementAt(i);
+ }
+ }
+ }
+
+ size_t newlyReleased = 0;
+ for (const ProfileBufferControlledChunkManager::ChunkMetadata& chunk :
+ aUpdate.NewlyReleasedChunksRef()) {
+ newlyReleased += chunk.mBufferBytes;
+ mReleasedChunksByTime.InsertElementSorted(TimeStampAndBytesAndPid{
+ chunk.mDoneTimeStamp, chunk.mBufferBytes, aProcessId});
+ }
+
+ mReleasedTotalBytes = mReleasedTotalBytes - destroyedReleased + newlyReleased;
+
+# ifdef DEBUG
+ size_t totalReleased = 0;
+ for (const TimeStampAndBytesAndPid& item : mReleasedChunksByTime) {
+ totalReleased += item.mBytes;
+ }
+ MOZ_ASSERT(mReleasedTotalBytes == totalReleased);
+# endif // DEBUG
+
+ std::vector<ProfileBufferControlledChunkManager::ChunkMetadata> toDestroy;
+ while (mUnreleasedTotalBytes + mReleasedTotalBytes > mMaximumBytes &&
+ !mReleasedChunksByTime.IsEmpty()) {
+ // We have reached the global memory limit, and there *are* released chunks
+ // that can be destroyed. Start with the first one, which is the oldest.
+ const TimeStampAndBytesAndPid& oldest = mReleasedChunksByTime[0];
+ LogDeletion(oldest.mProcessId, oldest.mTimeStamp);
+ mReleasedTotalBytes -= oldest.mBytes;
+ if (oldest.mProcessId == mParentProcessId) {
+ aParentChunkManager.DestroyChunksAtOrBefore(oldest.mTimeStamp);
+ } else {
+ ProfilerParentTracker::ForChild(
+ oldest.mProcessId,
+ [timestamp = oldest.mTimeStamp](ProfilerParent* profilerParent) {
+ Unused << profilerParent->SendDestroyReleasedChunksAtOrBefore(
+ timestamp);
+ });
+ }
+ mReleasedChunksByTime.RemoveElementAt(0);
+ }
+}
+
+/* static */
+ProfilerParentTracker* ProfilerParentTracker::GetInstance() {
+ MOZ_RELEASE_ASSERT(NS_IsMainThread());
+
+ // The main instance pointer, it will be initialized at most once, before
+ // XPCOMShutdownThreads.
+ static UniquePtr<ProfilerParentTracker> instance = nullptr;
+ if (MOZ_UNLIKELY(!instance)) {
+ if (PastShutdownPhase(ShutdownPhase::XPCOMShutdownThreads)) {
+ return nullptr;
+ }
+
+ instance = MakeUnique<ProfilerParentTracker>();
+
+ // The tracker should get destroyed before threads are shutdown, because its
+ // destruction closes extant channels, which could trigger promise
+ // rejections that need to be dispatched to other threads.
+ ClearOnShutdown(&instance, ShutdownPhase::XPCOMShutdownThreads);
+ }
+
+ return instance.get();
+}
+
+/* static */
+void ProfilerParentTracker::StartTracking(ProfilerParent* aProfilerParent) {
+ ProfilerParentTracker* tracker = GetInstance();
+ if (!tracker) {
+ return;
+ }
+
+ if (tracker->mMaybeController.isNothing() && tracker->mEntries != 0) {
+ // There is no controller yet, but the profiler has started.
+ // Since we're adding a ProfilerParent, it's a good time to start
+ // controlling the global memory usage of the profiler.
+ // (And this helps delay the Controller startup, because the parent profiler
+ // can start *very* early in the process, when some resources like threads
+ // are not ready yet.)
+ tracker->mMaybeController.emplace(size_t(tracker->mEntries) * 8u);
+ }
+
+ tracker->mProfilerParents.AppendElement(aProfilerParent);
+}
+
+/* static */
+void ProfilerParentTracker::StopTracking(ProfilerParent* aParent) {
+ ProfilerParentTracker* tracker = GetInstance();
+ if (!tracker) {
+ return;
+ }
+
+ tracker->mProfilerParents.RemoveElement(aParent);
+}
+
+/* static */
+void ProfilerParentTracker::ProfilerStarted(uint32_t aEntries) {
+ ProfilerParentTracker* tracker = GetInstance();
+ if (!tracker) {
+ return;
+ }
+
+ tracker->mEntries = aEntries;
+
+ if (tracker->mMaybeController.isNothing() &&
+ !tracker->mProfilerParents.IsEmpty()) {
+ // We are already tracking child processes, so it's a good time to start
+ // controlling the global memory usage of the profiler.
+ tracker->mMaybeController.emplace(size_t(tracker->mEntries) * 8u);
+ }
+}
+
+/* static */
+void ProfilerParentTracker::ProfilerWillStopIfStarted() {
+ ProfilerParentTracker* tracker = GetInstance();
+ if (!tracker) {
+ return;
+ }
+
+ tracker->mEntries = 0;
+ tracker->mMaybeController = Nothing{};
+}
+
+/* static */
+size_t ProfilerParentTracker::ProfilerParentCount() {
+ size_t count = 0;
+ ProfilerParentTracker* tracker = GetInstance();
+ if (tracker) {
+ for (ProfilerParent* profilerParent : tracker->mProfilerParents) {
+ if (!profilerParent->mDestroyed) {
+ ++count;
+ }
+ }
+ }
+ return count;
+}
+
+template <typename FuncType>
+/* static */
+void ProfilerParentTracker::Enumerate(FuncType&& aIterFunc) {
+ ProfilerParentTracker* tracker = GetInstance();
+ if (!tracker) {
+ return;
+ }
+
+ for (ProfilerParent* profilerParent : tracker->mProfilerParents) {
+ if (!profilerParent->mDestroyed) {
+ aIterFunc(profilerParent);
+ }
+ }
+}
+
+template <typename FuncType>
+/* static */
+void ProfilerParentTracker::ForChild(base::ProcessId aChildPid,
+ FuncType&& aIterFunc) {
+ ProfilerParentTracker* tracker = GetInstance();
+ if (!tracker) {
+ return;
+ }
+
+ for (ProfilerParent* profilerParent : tracker->mProfilerParents) {
+ if (profilerParent->mChildPid == aChildPid) {
+ if (!profilerParent->mDestroyed) {
+ std::forward<FuncType>(aIterFunc)(profilerParent);
+ }
+ return;
+ }
+ }
+}
+
+/* static */
+void ProfilerParentTracker::ForwardChildChunkManagerUpdate(
+ base::ProcessId aProcessId,
+ ProfileBufferControlledChunkManager::Update&& aUpdate) {
+ ProfilerParentTracker* tracker = GetInstance();
+ if (!tracker || tracker->mMaybeController.isNothing()) {
+ return;
+ }
+
+ MOZ_ASSERT(!aUpdate.IsNotUpdate(),
+ "No process should ever send a non-update");
+ tracker->mMaybeController->HandleChildChunkManagerUpdate(aProcessId,
+ std::move(aUpdate));
+}
+
+ProfilerParentTracker::ProfilerParentTracker() {
+ MOZ_RELEASE_ASSERT(NS_IsMainThread());
+ MOZ_COUNT_CTOR(ProfilerParentTracker);
+}
+
+ProfilerParentTracker::~ProfilerParentTracker() {
+ // This destructor should only be called on the main thread.
+ MOZ_RELEASE_ASSERT(NS_IsMainThread() ||
+ // OR we're not on the main thread (including if we are
+ // past the end of `main()`), which is fine *if* there are
+ // no ProfilerParent's still registered, in which case
+ // nothing else will happen in this destructor anyway.
+ // See bug 1713971 for more information.
+ mProfilerParents.IsEmpty());
+ MOZ_COUNT_DTOR(ProfilerParentTracker);
+
+ // Close the channels of any profiler parents that haven't been destroyed.
+ for (ProfilerParent* profilerParent : mProfilerParents.Clone()) {
+ if (!profilerParent->mDestroyed) {
+ // Keep the object alive until the call to Close() has completed.
+ // Close() will trigger a call to DeallocPProfilerParent.
+ RefPtr<ProfilerParent> actor = profilerParent;
+ actor->Close();
+ }
+ }
+}
+
+ProfilerParent::ProfilerParent(base::ProcessId aChildPid)
+ : mChildPid(aChildPid), mDestroyed(false) {
+ MOZ_COUNT_CTOR(ProfilerParent);
+
+ MOZ_RELEASE_ASSERT(NS_IsMainThread());
+}
+
+void ProfilerParent::Init() {
+ MOZ_RELEASE_ASSERT(NS_IsMainThread());
+
+ ProfilerParentTracker::StartTracking(this);
+
+ // We propagated the profiler state from the parent process to the child
+ // process through MOZ_PROFILER_STARTUP* environment variables.
+ // However, the profiler state might have changed in this process since then,
+ // and now that an active communication channel has been established with the
+ // child process, it's a good time to sync up the two profilers again.
+
+ int entries = 0;
+ Maybe<double> duration = Nothing();
+ double interval = 0;
+ mozilla::Vector<const char*> filters;
+ uint32_t features;
+ uint64_t activeTabID;
+ profiler_get_start_params(&entries, &duration, &interval, &features, &filters,
+ &activeTabID);
+
+ if (entries != 0) {
+ ProfilerInitParams ipcParams;
+ ipcParams.enabled() = true;
+ ipcParams.entries() = entries;
+ ipcParams.duration() = duration;
+ ipcParams.interval() = interval;
+ ipcParams.features() = features;
+ ipcParams.activeTabID() = activeTabID;
+
+ // If the filters exclude our pid, make sure it's stopped, otherwise
+ // continue with starting it.
+ if (!profiler::detail::FiltersExcludePid(
+ filters, ProfilerProcessId::FromNumber(mChildPid))) {
+ ipcParams.filters().SetCapacity(filters.length());
+ for (const char* filter : filters) {
+ ipcParams.filters().AppendElement(filter);
+ }
+
+ Unused << SendEnsureStarted(ipcParams);
+ RequestChunkManagerUpdate();
+ return;
+ }
+ }
+
+ Unused << SendStop();
+}
+#endif // MOZ_GECKO_PROFILER
+
+ProfilerParent::~ProfilerParent() {
+ MOZ_COUNT_DTOR(ProfilerParent);
+
+ MOZ_RELEASE_ASSERT(NS_IsMainThread());
+#ifdef MOZ_GECKO_PROFILER
+ ProfilerParentTracker::StopTracking(this);
+#endif
+}
+
+#ifdef MOZ_GECKO_PROFILER
+/* static */
+nsTArray<ProfilerParent::SingleProcessProfilePromiseAndChildPid>
+ProfilerParent::GatherProfiles() {
+ nsTArray<SingleProcessProfilePromiseAndChildPid> results;
+ if (!NS_IsMainThread()) {
+ return results;
+ }
+
+ results.SetCapacity(ProfilerParentTracker::ProfilerParentCount());
+ ProfilerParentTracker::Enumerate([&](ProfilerParent* profilerParent) {
+ results.AppendElement(SingleProcessProfilePromiseAndChildPid{
+ profilerParent->SendGatherProfile(), profilerParent->mChildPid});
+ });
+ return results;
+}
+
+/* static */
+RefPtr<ProfilerParent::SingleProcessProgressPromise>
+ProfilerParent::RequestGatherProfileProgress(base::ProcessId aChildPid) {
+ RefPtr<SingleProcessProgressPromise> promise;
+ ProfilerParentTracker::ForChild(
+ aChildPid, [&promise](ProfilerParent* profilerParent) {
+ promise = profilerParent->SendGetGatherProfileProgress();
+ });
+ return promise;
+}
+
+// Magic value for ProfileBufferChunkManagerUpdate::unreleasedBytes meaning
+// that this is a final update from a child.
+constexpr static uint64_t scUpdateUnreleasedBytesFINAL = uint64_t(-1);
+
+/* static */
+ProfileBufferChunkManagerUpdate ProfilerParent::MakeFinalUpdate() {
+ return ProfileBufferChunkManagerUpdate{
+ uint64_t(scUpdateUnreleasedBytesFINAL), 0, TimeStamp{},
+ nsTArray<ProfileBufferChunkMetadata>{}};
+}
+
+/* static */
+bool ProfilerParent::IsLockedOnCurrentThread() {
+ return ProfileBufferGlobalController::IsLockedOnCurrentThread();
+}
+
+void ProfilerParent::RequestChunkManagerUpdate() {
+ if (mDestroyed) {
+ return;
+ }
+
+ RefPtr<AwaitNextChunkManagerUpdatePromise> updatePromise =
+ SendAwaitNextChunkManagerUpdate();
+ updatePromise->Then(
+ GetMainThreadSerialEventTarget(), __func__,
+ [self = RefPtr<ProfilerParent>(this)](
+ const ProfileBufferChunkManagerUpdate& aUpdate) {
+ if (aUpdate.unreleasedBytes() == scUpdateUnreleasedBytesFINAL) {
+ // Special value meaning it's the final update from that child.
+ ProfilerParentTracker::ForwardChildChunkManagerUpdate(
+ self->mChildPid,
+ ProfileBufferControlledChunkManager::Update(nullptr));
+ } else {
+ // Not the final update, translate it.
+ std::vector<ProfileBufferControlledChunkManager::ChunkMetadata>
+ chunks;
+ if (!aUpdate.newlyReleasedChunks().IsEmpty()) {
+ chunks.reserve(aUpdate.newlyReleasedChunks().Length());
+ for (const ProfileBufferChunkMetadata& chunk :
+ aUpdate.newlyReleasedChunks()) {
+ chunks.emplace_back(chunk.doneTimeStamp(), chunk.bufferBytes());
+ }
+ }
+ // Let the tracker handle it.
+ ProfilerParentTracker::ForwardChildChunkManagerUpdate(
+ self->mChildPid,
+ ProfileBufferControlledChunkManager::Update(
+ aUpdate.unreleasedBytes(), aUpdate.releasedBytes(),
+ aUpdate.oldestDoneTimeStamp(), std::move(chunks)));
+ // This was not a final update, so start a new request.
+ self->RequestChunkManagerUpdate();
+ }
+ },
+ [self = RefPtr<ProfilerParent>(this)](
+ mozilla::ipc::ResponseRejectReason aReason) {
+ // Rejection could be for a number of reasons, assume the child will
+ // not respond anymore, so we pretend we received a final update.
+ ProfilerParentTracker::ForwardChildChunkManagerUpdate(
+ self->mChildPid,
+ ProfileBufferControlledChunkManager::Update(nullptr));
+ });
+}
+
+// Ref-counted class that resolves a promise on destruction.
+// Usage:
+// RefPtr<GenericPromise> f() {
+// return PromiseResolverOnDestruction::RunTask(
+// [](RefPtr<PromiseResolverOnDestruction> aPromiseResolver){
+// // Give *copies* of aPromiseResolver to asynchronous sub-tasks, the
+// // last remaining RefPtr destruction will resolve the promise.
+// });
+// }
+class PromiseResolverOnDestruction {
+ public:
+ NS_INLINE_DECL_REFCOUNTING(PromiseResolverOnDestruction)
+
+ template <typename TaskFunction>
+ static RefPtr<GenericPromise> RunTask(TaskFunction&& aTaskFunction) {
+ RefPtr<PromiseResolverOnDestruction> promiseResolver =
+ new PromiseResolverOnDestruction();
+ RefPtr<GenericPromise> promise =
+ promiseResolver->mPromiseHolder.Ensure(__func__);
+ std::forward<TaskFunction>(aTaskFunction)(std::move(promiseResolver));
+ return promise;
+ }
+
+ private:
+ PromiseResolverOnDestruction() = default;
+
+ ~PromiseResolverOnDestruction() {
+ mPromiseHolder.ResolveIfExists(/* unused */ true, __func__);
+ }
+
+ MozPromiseHolder<GenericPromise> mPromiseHolder;
+};
+
+// Given a ProfilerParentSendFunction: (ProfilerParent*) -> some MozPromise,
+// run the function on all live ProfilerParents and return a GenericPromise, and
+// when their promise gets resolve, resolve our Generic promise.
+template <typename ProfilerParentSendFunction>
+static RefPtr<GenericPromise> SendAndConvertPromise(
+ ProfilerParentSendFunction&& aProfilerParentSendFunction) {
+ if (!NS_IsMainThread()) {
+ return GenericPromise::CreateAndResolve(/* unused */ true, __func__);
+ }
+
+ return PromiseResolverOnDestruction::RunTask(
+ [&](RefPtr<PromiseResolverOnDestruction> aPromiseResolver) {
+ ProfilerParentTracker::Enumerate([&](ProfilerParent* profilerParent) {
+ std::forward<ProfilerParentSendFunction>(aProfilerParentSendFunction)(
+ profilerParent)
+ ->Then(GetMainThreadSerialEventTarget(), __func__,
+ [aPromiseResolver](
+ typename std::remove_reference_t<
+ decltype(*std::forward<ProfilerParentSendFunction>(
+ aProfilerParentSendFunction)(
+ profilerParent))>::ResolveOrRejectValue&&) {
+ // Whatever the resolution/rejection is, do nothing.
+ // The lambda aPromiseResolver ref-count will decrease.
+ });
+ });
+ });
+}
+
+/* static */
+RefPtr<GenericPromise> ProfilerParent::ProfilerStarted(
+ nsIProfilerStartParams* aParams) {
+ if (!NS_IsMainThread()) {
+ return GenericPromise::CreateAndResolve(/* unused */ true, __func__);
+ }
+
+ ProfilerInitParams ipcParams;
+ double duration;
+ ipcParams.enabled() = true;
+ aParams->GetEntries(&ipcParams.entries());
+ aParams->GetDuration(&duration);
+ if (duration > 0.0) {
+ ipcParams.duration() = Some(duration);
+ } else {
+ ipcParams.duration() = Nothing();
+ }
+ aParams->GetInterval(&ipcParams.interval());
+ aParams->GetFeatures(&ipcParams.features());
+ ipcParams.filters() = aParams->GetFilters().Clone();
+ // We need filters as a Span<const char*> to test pids in the lambda below.
+ auto filtersCStrings = nsTArray<const char*>{aParams->GetFilters().Length()};
+ for (const auto& filter : aParams->GetFilters()) {
+ filtersCStrings.AppendElement(filter.Data());
+ }
+ aParams->GetActiveTabID(&ipcParams.activeTabID());
+
+ ProfilerParentTracker::ProfilerStarted(ipcParams.entries());
+
+ return SendAndConvertPromise([&](ProfilerParent* profilerParent) {
+ if (profiler::detail::FiltersExcludePid(
+ filtersCStrings,
+ ProfilerProcessId::FromNumber(profilerParent->mChildPid))) {
+ // This pid is excluded, don't start the profiler at all.
+ return PProfilerParent::StartPromise::CreateAndResolve(/* unused */ true,
+ __func__);
+ }
+ auto promise = profilerParent->SendStart(ipcParams);
+ profilerParent->RequestChunkManagerUpdate();
+ return promise;
+ });
+}
+
+/* static */
+void ProfilerParent::ProfilerWillStopIfStarted() {
+ if (!NS_IsMainThread()) {
+ return;
+ }
+
+ ProfilerParentTracker::ProfilerWillStopIfStarted();
+}
+
+/* static */
+RefPtr<GenericPromise> ProfilerParent::ProfilerStopped() {
+ return SendAndConvertPromise([](ProfilerParent* profilerParent) {
+ return profilerParent->SendStop();
+ });
+}
+
+/* static */
+RefPtr<GenericPromise> ProfilerParent::ProfilerPaused() {
+ return SendAndConvertPromise([](ProfilerParent* profilerParent) {
+ return profilerParent->SendPause();
+ });
+}
+
+/* static */
+RefPtr<GenericPromise> ProfilerParent::ProfilerResumed() {
+ return SendAndConvertPromise([](ProfilerParent* profilerParent) {
+ return profilerParent->SendResume();
+ });
+}
+
+/* static */
+RefPtr<GenericPromise> ProfilerParent::ProfilerPausedSampling() {
+ return SendAndConvertPromise([](ProfilerParent* profilerParent) {
+ return profilerParent->SendPauseSampling();
+ });
+}
+
+/* static */
+RefPtr<GenericPromise> ProfilerParent::ProfilerResumedSampling() {
+ return SendAndConvertPromise([](ProfilerParent* profilerParent) {
+ return profilerParent->SendResumeSampling();
+ });
+}
+
+/* static */
+void ProfilerParent::ClearAllPages() {
+ if (!NS_IsMainThread()) {
+ return;
+ }
+
+ ProfilerParentTracker::Enumerate([](ProfilerParent* profilerParent) {
+ Unused << profilerParent->SendClearAllPages();
+ });
+}
+
+/* static */
+RefPtr<GenericPromise> ProfilerParent::WaitOnePeriodicSampling() {
+ return SendAndConvertPromise([](ProfilerParent* profilerParent) {
+ return profilerParent->SendWaitOnePeriodicSampling();
+ });
+}
+
+void ProfilerParent::ActorDestroy(ActorDestroyReason aActorDestroyReason) {
+ MOZ_RELEASE_ASSERT(NS_IsMainThread());
+ mDestroyed = true;
+}
+
+#endif
+
+} // namespace mozilla
diff --git a/tools/profiler/gecko/ProfilerTypes.ipdlh b/tools/profiler/gecko/ProfilerTypes.ipdlh
new file mode 100644
index 0000000000..6255d47db0
--- /dev/null
+++ b/tools/profiler/gecko/ProfilerTypes.ipdlh
@@ -0,0 +1,43 @@
+/* -*- Mode: C++; c-basic-offset: 2; indent-tabs-mode: nil; tab-width: 8 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+using class mozilla::TimeStamp from "mozilla/TimeStamp.h";
+using struct mozilla::ProfileGenerationAdditionalInformation from "ProfileAdditionalInformation.h";
+
+namespace mozilla {
+
+struct ProfilerInitParams {
+ bool enabled;
+ uint32_t entries;
+ double? duration;
+ double interval;
+ uint32_t features;
+ uint64_t activeTabID;
+ nsCString[] filters;
+};
+
+struct ProfileBufferChunkMetadata {
+ TimeStamp doneTimeStamp;
+ uint32_t bufferBytes;
+};
+
+struct ProfileBufferChunkManagerUpdate {
+ uint64_t unreleasedBytes;
+ uint64_t releasedBytes;
+ TimeStamp oldestDoneTimeStamp;
+ ProfileBufferChunkMetadata[] newlyReleasedChunks;
+};
+
+struct GatherProfileProgress {
+ uint32_t progressProportionValueUnderlyingType;
+ nsCString progressLocation;
+};
+
+struct IPCProfileAndAdditionalInformation {
+ Shmem profileShmem;
+ ProfileGenerationAdditionalInformation? additionalInformation;
+};
+
+} // namespace mozilla
diff --git a/tools/profiler/gecko/components.conf b/tools/profiler/gecko/components.conf
new file mode 100644
index 0000000000..b1775c37ab
--- /dev/null
+++ b/tools/profiler/gecko/components.conf
@@ -0,0 +1,17 @@
+# -*- Mode: python; indent-tabs-mode: nil; tab-width: 40 -*-
+# vim: set filetype=python:
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+Classes = [
+ {
+ 'js_name': 'profiler',
+ 'cid': '{25db9b8e-8123-4de1-b66d-8bbbedf2cdf4}',
+ 'contract_ids': ['@mozilla.org/tools/profiler;1'],
+ 'interfaces': ['nsIProfiler'],
+ 'type': 'nsProfiler',
+ 'headers': ['/tools/profiler/gecko/nsProfiler.h'],
+ 'init_method': 'Init',
+ },
+]
diff --git a/tools/profiler/gecko/nsIProfiler.idl b/tools/profiler/gecko/nsIProfiler.idl
new file mode 100644
index 0000000000..8b501d4b9f
--- /dev/null
+++ b/tools/profiler/gecko/nsIProfiler.idl
@@ -0,0 +1,208 @@
+/* -*- Mode: IDL; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "nsISupports.idl"
+
+%{C++
+#include "mozilla/Maybe.h"
+#include "nsTArrayForwardDeclare.h"
+#include "nsStringFwd.h"
+#include "mozilla/MozPromise.h"
+%}
+
+[ref] native nsCString(const nsCString);
+[ref] native StringArrayRef(const nsTArray<nsCString>);
+native ProfileDataBufferMozPromise(RefPtr<mozilla::MozPromise<FallibleTArray<uint8_t>, nsresult, true>>);
+
+/**
+ * Start-up parameters for subprocesses are passed through nsIObserverService,
+ * which, unfortunately, means we need to implement nsISupports in order to
+ * go through it.
+ */
+[scriptable, builtinclass, uuid(0a175ba7-8fcf-4ce9-9c4b-ccc6272f4425)]
+interface nsIProfilerStartParams : nsISupports
+{
+ readonly attribute uint32_t entries;
+ readonly attribute double duration;
+ readonly attribute double interval;
+ readonly attribute uint32_t features;
+ readonly attribute uint64_t activeTabID;
+
+ [noscript, notxpcom, nostdcall] StringArrayRef getFilters();
+};
+
+[scriptable, builtinclass, uuid(ead3f75c-0e0e-4fbb-901c-1e5392ef5b2a)]
+interface nsIProfiler : nsISupports
+{
+ /*
+ * Control functions return as soon as this process' profiler has done its
+ * work. The returned promise gets resolved when sub-processes have completed
+ * their operation, or immediately if there are no sub-processes.
+ */
+ [implicit_jscontext]
+ Promise StartProfiler(in uint32_t aEntries, in double aInterval,
+ in Array<AUTF8String> aFeatures,
+ [optional] in Array<AUTF8String> aFilters,
+ [optional] in uint64_t aActiveTabID,
+ [optional] in double aDuration);
+ [implicit_jscontext]
+ Promise StopProfiler();
+ boolean IsPaused();
+ [implicit_jscontext]
+ Promise Pause();
+ [implicit_jscontext]
+ Promise Resume();
+ boolean IsSamplingPaused();
+ [implicit_jscontext]
+ Promise PauseSampling();
+ [implicit_jscontext]
+ Promise ResumeSampling();
+
+ /*
+ * Resolves the returned promise after at least one full periodic sampling in
+ * each process.
+ * Rejects the promise if sampler is not running (yet, or anymore, or paused)
+ * in the parent process.
+ * This is mainly useful in tests, to wait just long enough to guarantee that
+ * at least one sample was taken in each process.
+ */
+ [implicit_jscontext]
+ Promise waitOnePeriodicSampling();
+
+ /*
+ * Returns the JSON string of the profile. If aSinceTime is passed, only
+ * report samples taken at >= aSinceTime.
+ */
+ string GetProfile([optional] in double aSinceTime);
+
+ /*
+ * Returns a JS object of the profile. If aSinceTime is passed, only report
+ * samples taken at >= aSinceTime.
+ */
+ [implicit_jscontext]
+ jsval getProfileData([optional] in double aSinceTime);
+
+ [implicit_jscontext]
+ Promise getProfileDataAsync([optional] in double aSinceTime);
+
+ [implicit_jscontext]
+ Promise getProfileDataAsArrayBuffer([optional] in double aSinceTime);
+
+ [implicit_jscontext]
+ Promise getProfileDataAsGzippedArrayBuffer([optional] in double aSinceTime);
+
+ /**
+ * Asynchronously dump the profile collected so far to a file.
+ * Returns a promise that resolves once the file has been written, with data
+ * from all responsive Firefox processes. Note: This blocks the parent process
+ * while collecting its own data, then unblocks while child processes data is
+ * being collected.
+ * `aFilename` may be a full path, or a path relative to where Firefox was
+ * launched. The target directory must already exist.
+ */
+ [implicit_jscontext]
+ Promise dumpProfileToFileAsync(in ACString aFilename,
+ [optional] in double aSinceTime);
+
+ /**
+ * Synchronously dump the profile collected so far in this process to a file.
+ * This profile will only contain data from the parent process, and from child
+ * processes that have ended during the session; other currently-live
+ * processes are ignored.
+ * `aFilename` may be a full path, or a path relative to where Firefox was
+ * launched. The target directory must already exist.
+ */
+ void dumpProfileToFile(in string aFilename);
+
+ boolean IsActive();
+
+ /**
+ * Clear all registered and unregistered page information in prifiler.
+ */
+ void ClearAllPages();
+
+ /**
+ * Returns an array of the features that are supported in this build.
+ * Features may vary depending on platform and build flags.
+ */
+ Array<AUTF8String> GetFeatures();
+
+ /**
+ * Returns a JavaScript object that contains a description of the currently configured
+ * state of the profiler when the profiler is active. This can be useful to assert
+ * the UI of the profiler's recording panel in tests. It returns null when the profiler
+ * is not active.
+ */
+ [implicit_jscontext]
+ readonly attribute jsval activeConfiguration;
+
+ /**
+ * Returns an array of all features that are supported by the profiler.
+ * The array may contain features that are not supported in this build.
+ */
+ Array<AUTF8String> GetAllFeatures();
+
+ void GetBufferInfo(out uint32_t aCurrentPosition, out uint32_t aTotalSize,
+ out uint32_t aGeneration);
+
+ /**
+ * Returns the elapsed time, in milliseconds, since the profiler's epoch.
+ * The epoch is guaranteed to be constant for the duration of the
+ * process, but is otherwise arbitrary.
+ */
+ double getElapsedTime();
+
+ /**
+ * Contains an array of shared library objects.
+ * Every object has the properties:
+ * - start: The start address of the memory region occupied by this library.
+ * - end: The end address of the memory region occupied by this library.
+ * - offset: Usually zero, except on Linux / Android if the first mapped
+ * section of the library has been mapped to an address that's
+ * different from the library's base address.
+ * Then offset = start - baseAddress.
+ * - name: The name (file basename) of the binary.
+ * - path: The full absolute path to the binary.
+ * - debugName: On Windows, the name of the pdb file for the binary. On other
+ * platforms, the same as |name|.
+ * - debugPath: On Windows, the full absolute path of the pdb file for the
+ * binary. On other platforms, the same as |path|.
+ * - arch: On Mac, the name of the architecture that identifies the right
+ * binary image of a fat binary. Example values are "i386", "x86_64",
+ * and "x86_64h". (x86_64h is used for binaries that contain
+ * instructions that are specific to the Intel Haswell microarchitecture.)
+ * On non-Mac platforms, arch is "".
+ * - breakpadId: A unique identifier string for this library, as used by breakpad.
+ */
+ [implicit_jscontext]
+ readonly attribute jsval sharedLibraries;
+
+ /**
+ * Returns a promise that resolves to a SymbolTableAsTuple for the binary at
+ * the given path.
+ *
+ * SymbolTable as tuple: [addrs, index, buffer]
+ * Contains a symbol table, which can be used to map addresses to strings.
+ *
+ * The first element of this tuple, commonly named "addrs", is a sorted array of
+ * symbol addresses, as library-relative offsets in bytes, in ascending order.
+ * The third element of this tuple, commonly named "buffer", is a buffer of
+ * bytes that contains all strings from this symbol table, in the order of the
+ * addresses they correspond to, in utf-8 encoded form, all concatenated
+ * together.
+ * The second element of this tuple, commonly named "index", contains positions
+ * into "buffer". For every address, that position is where the string for that
+ * address starts in the buffer.
+ * index.length == addrs.length + 1.
+ * index[addrs.length] is the end position of the last string in the buffer.
+ *
+ * The string for the address addrs[i] is
+ * (new TextDecoder()).decode(buffer.subarray(index[i], index[i + 1]))
+ */
+ [implicit_jscontext]
+ Promise getSymbolTable(in ACString aDebugPath, in ACString aBreakpadID);
+
+ [notxpcom, nostdcall] ProfileDataBufferMozPromise getProfileDataAsGzippedArrayBufferAndroid(in double aSinceTime);
+};
diff --git a/tools/profiler/gecko/nsProfiler.cpp b/tools/profiler/gecko/nsProfiler.cpp
new file mode 100644
index 0000000000..66e32ce2bc
--- /dev/null
+++ b/tools/profiler/gecko/nsProfiler.cpp
@@ -0,0 +1,1487 @@
+/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "nsProfiler.h"
+
+#include <fstream>
+#include <limits>
+#include <sstream>
+#include <string>
+#include <utility>
+
+#include "GeckoProfiler.h"
+#include "ProfilerControl.h"
+#include "ProfilerParent.h"
+#include "js/Array.h" // JS::NewArrayObject
+#include "js/JSON.h"
+#include "js/PropertyAndElement.h" // JS_SetElement
+#include "js/Value.h"
+#include "json/json.h"
+#include "mozilla/ErrorResult.h"
+#include "mozilla/JSONStringWriteFuncs.h"
+#include "mozilla/SchedulerGroup.h"
+#include "mozilla/Services.h"
+#include "mozilla/dom/Promise.h"
+#include "mozilla/dom/TypedArray.h"
+#include "mozilla/Preferences.h"
+#include "nsComponentManagerUtils.h"
+#include "nsIInterfaceRequestor.h"
+#include "nsIInterfaceRequestorUtils.h"
+#include "nsILoadContext.h"
+#include "nsIWebNavigation.h"
+#include "nsProfilerStartParams.h"
+#include "nsProxyRelease.h"
+#include "nsString.h"
+#include "nsThreadUtils.h"
+#include "platform.h"
+#include "shared-libraries.h"
+#include "zlib.h"
+
+#ifndef ANDROID
+# include <cstdio>
+#else
+# include <android/log.h>
+#endif
+
+using namespace mozilla;
+
+using dom::AutoJSAPI;
+using dom::Promise;
+using std::string;
+
+static constexpr size_t scLengthMax = size_t(JS::MaxStringLength);
+// Used when trying to add more JSON data, to account for the extra space needed
+// for the log and to close the profile.
+static constexpr size_t scLengthAccumulationThreshold = scLengthMax - 16 * 1024;
+
+NS_IMPL_ISUPPORTS(nsProfiler, nsIProfiler)
+
+nsProfiler::nsProfiler() : mGathering(false) {}
+
+nsProfiler::~nsProfiler() {
+ if (mSymbolTableThread) {
+ mSymbolTableThread->Shutdown();
+ }
+ ResetGathering(NS_ERROR_ILLEGAL_DURING_SHUTDOWN);
+}
+
+nsresult nsProfiler::Init() { return NS_OK; }
+
+template <typename JsonLogObjectUpdater>
+void nsProfiler::Log(JsonLogObjectUpdater&& aJsonLogObjectUpdater) {
+ if (mGatheringLog) {
+ MOZ_ASSERT(mGatheringLog->isObject());
+ std::forward<JsonLogObjectUpdater>(aJsonLogObjectUpdater)(*mGatheringLog);
+ MOZ_ASSERT(mGatheringLog->isObject());
+ }
+}
+
+template <typename JsonArrayAppender>
+void nsProfiler::LogEvent(JsonArrayAppender&& aJsonArrayAppender) {
+ Log([&](Json::Value& aRoot) {
+ Json::Value& events = aRoot[Json::StaticString{"events"}];
+ if (!events.isArray()) {
+ events = Json::Value{Json::arrayValue};
+ }
+ Json::Value newEvent{Json::arrayValue};
+ newEvent.append(ProfilingLog::Timestamp());
+ std::forward<JsonArrayAppender>(aJsonArrayAppender)(newEvent);
+ MOZ_ASSERT(newEvent.isArray());
+ events.append(std::move(newEvent));
+ });
+}
+
+void nsProfiler::LogEventLiteralString(const char* aEventString) {
+ LogEvent([&](Json::Value& aEvent) {
+ aEvent.append(Json::StaticString{aEventString});
+ });
+}
+
+static nsresult FillVectorFromStringArray(Vector<const char*>& aVector,
+ const nsTArray<nsCString>& aArray) {
+ if (NS_WARN_IF(!aVector.reserve(aArray.Length()))) {
+ return NS_ERROR_OUT_OF_MEMORY;
+ }
+ for (auto& entry : aArray) {
+ aVector.infallibleAppend(entry.get());
+ }
+ return NS_OK;
+}
+
+// Given a PromiseReturningFunction: () -> GenericPromise,
+// run the function, and return a JS Promise (through aPromise) that will be
+// resolved when the function's GenericPromise gets resolved.
+template <typename PromiseReturningFunction>
+static nsresult RunFunctionAndConvertPromise(
+ JSContext* aCx, Promise** aPromise,
+ PromiseReturningFunction&& aPromiseReturningFunction) {
+ MOZ_ASSERT(NS_IsMainThread());
+
+ if (NS_WARN_IF(!aCx)) {
+ return NS_ERROR_FAILURE;
+ }
+
+ nsIGlobalObject* globalObject = xpc::CurrentNativeGlobal(aCx);
+ if (NS_WARN_IF(!globalObject)) {
+ return NS_ERROR_FAILURE;
+ }
+
+ ErrorResult result;
+ RefPtr<Promise> promise = Promise::Create(globalObject, result);
+ if (NS_WARN_IF(result.Failed())) {
+ return result.StealNSResult();
+ }
+
+ std::forward<PromiseReturningFunction>(aPromiseReturningFunction)()->Then(
+ GetMainThreadSerialEventTarget(), __func__,
+ [promise](GenericPromise::ResolveOrRejectValue&&) {
+ promise->MaybeResolveWithUndefined();
+ });
+
+ promise.forget(aPromise);
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+nsProfiler::StartProfiler(uint32_t aEntries, double aInterval,
+ const nsTArray<nsCString>& aFeatures,
+ const nsTArray<nsCString>& aFilters,
+ uint64_t aActiveTabID, double aDuration,
+ JSContext* aCx, Promise** aPromise) {
+ ResetGathering(NS_ERROR_DOM_ABORT_ERR);
+
+ Vector<const char*> featureStringVector;
+ nsresult rv = FillVectorFromStringArray(featureStringVector, aFeatures);
+ if (NS_FAILED(rv)) {
+ return rv;
+ }
+ uint32_t features = ParseFeaturesFromStringArray(
+ featureStringVector.begin(), featureStringVector.length());
+ Maybe<double> duration = aDuration > 0.0 ? Some(aDuration) : Nothing();
+
+ Vector<const char*> filterStringVector;
+ rv = FillVectorFromStringArray(filterStringVector, aFilters);
+ if (NS_FAILED(rv)) {
+ return rv;
+ }
+
+ return RunFunctionAndConvertPromise(aCx, aPromise, [&]() {
+ return profiler_start(PowerOfTwo32(aEntries), aInterval, features,
+ filterStringVector.begin(),
+ filterStringVector.length(), aActiveTabID, duration);
+ });
+}
+
+NS_IMETHODIMP
+nsProfiler::StopProfiler(JSContext* aCx, Promise** aPromise) {
+ ResetGathering(NS_ERROR_DOM_ABORT_ERR);
+ return RunFunctionAndConvertPromise(aCx, aPromise,
+ []() { return profiler_stop(); });
+}
+
+NS_IMETHODIMP
+nsProfiler::IsPaused(bool* aIsPaused) {
+ *aIsPaused = profiler_is_paused();
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+nsProfiler::Pause(JSContext* aCx, Promise** aPromise) {
+ return RunFunctionAndConvertPromise(aCx, aPromise,
+ []() { return profiler_pause(); });
+}
+
+NS_IMETHODIMP
+nsProfiler::Resume(JSContext* aCx, Promise** aPromise) {
+ return RunFunctionAndConvertPromise(aCx, aPromise,
+ []() { return profiler_resume(); });
+}
+
+NS_IMETHODIMP
+nsProfiler::IsSamplingPaused(bool* aIsSamplingPaused) {
+ *aIsSamplingPaused = profiler_is_sampling_paused();
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+nsProfiler::PauseSampling(JSContext* aCx, Promise** aPromise) {
+ return RunFunctionAndConvertPromise(
+ aCx, aPromise, []() { return profiler_pause_sampling(); });
+}
+
+NS_IMETHODIMP
+nsProfiler::ResumeSampling(JSContext* aCx, Promise** aPromise) {
+ return RunFunctionAndConvertPromise(
+ aCx, aPromise, []() { return profiler_resume_sampling(); });
+}
+
+NS_IMETHODIMP
+nsProfiler::ClearAllPages() {
+ profiler_clear_all_pages();
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+nsProfiler::WaitOnePeriodicSampling(JSContext* aCx, Promise** aPromise) {
+ MOZ_ASSERT(NS_IsMainThread());
+
+ if (NS_WARN_IF(!aCx)) {
+ return NS_ERROR_FAILURE;
+ }
+
+ nsIGlobalObject* globalObject = xpc::CurrentNativeGlobal(aCx);
+ if (NS_WARN_IF(!globalObject)) {
+ return NS_ERROR_FAILURE;
+ }
+
+ ErrorResult result;
+ RefPtr<Promise> promise = Promise::Create(globalObject, result);
+ if (NS_WARN_IF(result.Failed())) {
+ return result.StealNSResult();
+ }
+
+ // The callback cannot officially own the promise RefPtr directly, because
+ // `Promise` doesn't support multi-threading, and the callback could destroy
+ // the promise in the sampler thread.
+ // `nsMainThreadPtrHandle` ensures that the promise can only be destroyed on
+ // the main thread. And the invocation from the Sampler thread immediately
+ // dispatches a task back to the main thread, to resolve/reject the promise.
+ // The lambda needs to be `mutable`, to allow moving-from
+ // `promiseHandleInSampler`.
+ if (!profiler_callback_after_sampling(
+ [promiseHandleInSampler = nsMainThreadPtrHandle<Promise>(
+ new nsMainThreadPtrHolder<Promise>(
+ "WaitOnePeriodicSampling promise for Sampler", promise))](
+ SamplingState aSamplingState) mutable {
+ SchedulerGroup::Dispatch(
+ TaskCategory::Other,
+ NS_NewRunnableFunction(
+ "nsProfiler::WaitOnePeriodicSampling result on main thread",
+ [promiseHandleInMT = std::move(promiseHandleInSampler),
+ aSamplingState]() mutable {
+ switch (aSamplingState) {
+ case SamplingState::JustStopped:
+ case SamplingState::SamplingPaused:
+ promiseHandleInMT->MaybeReject(NS_ERROR_FAILURE);
+ break;
+
+ case SamplingState::NoStackSamplingCompleted:
+ case SamplingState::SamplingCompleted:
+ // The parent process has succesfully done a sampling,
+ // check the child processes (if any).
+ ProfilerParent::WaitOnePeriodicSampling()->Then(
+ GetMainThreadSerialEventTarget(), __func__,
+ [promiseHandleInMT =
+ std::move(promiseHandleInMT)](
+ GenericPromise::ResolveOrRejectValue&&) {
+ promiseHandleInMT->MaybeResolveWithUndefined();
+ });
+ break;
+
+ default:
+ MOZ_ASSERT(false, "Unexpected SamplingState value");
+ promiseHandleInMT->MaybeReject(
+ NS_ERROR_DOM_UNKNOWN_ERR);
+ break;
+ }
+ }));
+ })) {
+ // Callback was not added (e.g., profiler is not running) and will never be
+ // invoked, so we need to resolve the promise here.
+ promise->MaybeReject(NS_ERROR_DOM_UNKNOWN_ERR);
+ }
+
+ promise.forget(aPromise);
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+nsProfiler::GetProfile(double aSinceTime, char** aProfile) {
+ mozilla::UniquePtr<char[]> profile = profiler_get_profile(aSinceTime);
+ *aProfile = profile.release();
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+nsProfiler::GetSharedLibraries(JSContext* aCx,
+ JS::MutableHandle<JS::Value> aResult) {
+ JS::Rooted<JS::Value> val(aCx);
+ {
+ JSONStringWriteFunc<nsCString> buffer;
+ JSONWriter w(buffer, JSONWriter::SingleLineStyle);
+ w.StartArrayElement();
+ SharedLibraryInfo sharedLibraryInfo = SharedLibraryInfo::GetInfoForSelf();
+ sharedLibraryInfo.SortByAddress();
+ AppendSharedLibraries(w, sharedLibraryInfo);
+ w.EndArray();
+ NS_ConvertUTF8toUTF16 buffer16(buffer.StringCRef());
+ MOZ_ALWAYS_TRUE(JS_ParseJSON(aCx,
+ static_cast<const char16_t*>(buffer16.get()),
+ buffer16.Length(), &val));
+ }
+ JS::Rooted<JSObject*> obj(aCx, &val.toObject());
+ if (!obj) {
+ return NS_ERROR_FAILURE;
+ }
+ aResult.setObject(*obj);
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+nsProfiler::GetActiveConfiguration(JSContext* aCx,
+ JS::MutableHandle<JS::Value> aResult) {
+ JS::Rooted<JS::Value> jsValue(aCx);
+ {
+ JSONStringWriteFunc<nsCString> buffer;
+ JSONWriter writer(buffer, JSONWriter::SingleLineStyle);
+ profiler_write_active_configuration(writer);
+ NS_ConvertUTF8toUTF16 buffer16(buffer.StringCRef());
+ MOZ_ALWAYS_TRUE(JS_ParseJSON(aCx,
+ static_cast<const char16_t*>(buffer16.get()),
+ buffer16.Length(), &jsValue));
+ }
+ if (jsValue.isNull()) {
+ aResult.setNull();
+ } else {
+ JS::Rooted<JSObject*> obj(aCx, &jsValue.toObject());
+ if (!obj) {
+ return NS_ERROR_FAILURE;
+ }
+ aResult.setObject(*obj);
+ }
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+nsProfiler::DumpProfileToFile(const char* aFilename) {
+ profiler_save_profile_to_file(aFilename);
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+nsProfiler::GetProfileData(double aSinceTime, JSContext* aCx,
+ JS::MutableHandle<JS::Value> aResult) {
+ mozilla::UniquePtr<char[]> profile = profiler_get_profile(aSinceTime);
+ if (!profile) {
+ return NS_ERROR_FAILURE;
+ }
+
+ NS_ConvertUTF8toUTF16 js_string(nsDependentCString(profile.get()));
+ auto profile16 = static_cast<const char16_t*>(js_string.get());
+
+ JS::Rooted<JS::Value> val(aCx);
+ MOZ_ALWAYS_TRUE(JS_ParseJSON(aCx, profile16, js_string.Length(), &val));
+
+ aResult.set(val);
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+nsProfiler::GetProfileDataAsync(double aSinceTime, JSContext* aCx,
+ Promise** aPromise) {
+ MOZ_ASSERT(NS_IsMainThread());
+
+ if (!profiler_is_active()) {
+ return NS_ERROR_FAILURE;
+ }
+
+ if (NS_WARN_IF(!aCx)) {
+ return NS_ERROR_FAILURE;
+ }
+
+ nsIGlobalObject* globalObject = xpc::CurrentNativeGlobal(aCx);
+ if (NS_WARN_IF(!globalObject)) {
+ return NS_ERROR_FAILURE;
+ }
+
+ ErrorResult result;
+ RefPtr<Promise> promise = Promise::Create(globalObject, result);
+ if (NS_WARN_IF(result.Failed())) {
+ return result.StealNSResult();
+ }
+
+ StartGathering(aSinceTime)
+ ->Then(
+ GetMainThreadSerialEventTarget(), __func__,
+ [promise](const mozilla::ProfileAndAdditionalInformation& aResult) {
+ AutoJSAPI jsapi;
+ if (NS_WARN_IF(!jsapi.Init(promise->GetGlobalObject()))) {
+ // We're really hosed if we can't get a JS context for some
+ // reason.
+ promise->MaybeReject(NS_ERROR_DOM_UNKNOWN_ERR);
+ return;
+ }
+
+ JSContext* cx = jsapi.cx();
+
+ // Now parse the JSON so that we resolve with a JS Object.
+ JS::Rooted<JS::Value> val(cx);
+ {
+ NS_ConvertUTF8toUTF16 js_string(aResult.mProfile);
+ if (!JS_ParseJSON(cx,
+ static_cast<const char16_t*>(js_string.get()),
+ js_string.Length(), &val)) {
+ if (!jsapi.HasException()) {
+ promise->MaybeReject(NS_ERROR_DOM_UNKNOWN_ERR);
+ } else {
+ JS::Rooted<JS::Value> exn(cx);
+ DebugOnly<bool> gotException = jsapi.StealException(&exn);
+ MOZ_ASSERT(gotException);
+
+ jsapi.ClearException();
+ promise->MaybeReject(exn);
+ }
+ } else {
+ promise->MaybeResolve(val);
+ }
+ }
+ },
+ [promise](nsresult aRv) { promise->MaybeReject(aRv); });
+
+ promise.forget(aPromise);
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+nsProfiler::GetProfileDataAsArrayBuffer(double aSinceTime, JSContext* aCx,
+ Promise** aPromise) {
+ MOZ_ASSERT(NS_IsMainThread());
+
+ if (!profiler_is_active()) {
+ return NS_ERROR_FAILURE;
+ }
+
+ if (NS_WARN_IF(!aCx)) {
+ return NS_ERROR_FAILURE;
+ }
+
+ nsIGlobalObject* globalObject = xpc::CurrentNativeGlobal(aCx);
+ if (NS_WARN_IF(!globalObject)) {
+ return NS_ERROR_FAILURE;
+ }
+
+ ErrorResult result;
+ RefPtr<Promise> promise = Promise::Create(globalObject, result);
+ if (NS_WARN_IF(result.Failed())) {
+ return result.StealNSResult();
+ }
+
+ StartGathering(aSinceTime)
+ ->Then(
+ GetMainThreadSerialEventTarget(), __func__,
+ [promise](const mozilla::ProfileAndAdditionalInformation& aResult) {
+ AutoJSAPI jsapi;
+ if (NS_WARN_IF(!jsapi.Init(promise->GetGlobalObject()))) {
+ // We're really hosed if we can't get a JS context for some
+ // reason.
+ promise->MaybeReject(NS_ERROR_DOM_UNKNOWN_ERR);
+ return;
+ }
+
+ JSContext* cx = jsapi.cx();
+ JSObject* typedArray = dom::ArrayBuffer::Create(
+ cx, aResult.mProfile.Length(),
+ reinterpret_cast<const uint8_t*>(aResult.mProfile.Data()));
+ if (typedArray) {
+ JS::Rooted<JS::Value> val(cx, JS::ObjectValue(*typedArray));
+ promise->MaybeResolve(val);
+ } else {
+ promise->MaybeReject(NS_ERROR_OUT_OF_MEMORY);
+ }
+ },
+ [promise](nsresult aRv) { promise->MaybeReject(aRv); });
+
+ promise.forget(aPromise);
+ return NS_OK;
+}
+
+nsresult CompressString(const nsCString& aString,
+ FallibleTArray<uint8_t>& aOutBuff) {
+ // Compress a buffer via zlib (as with `compress()`), but emit a
+ // gzip header as well. Like `compress()`, this is limited to 4GB in
+ // size, but that shouldn't be an issue for our purposes.
+ uLongf outSize = compressBound(aString.Length());
+ if (!aOutBuff.SetLength(outSize, fallible)) {
+ return NS_ERROR_OUT_OF_MEMORY;
+ }
+
+ int zerr;
+ z_stream stream;
+ stream.zalloc = nullptr;
+ stream.zfree = nullptr;
+ stream.opaque = nullptr;
+ stream.next_out = (Bytef*)aOutBuff.Elements();
+ stream.avail_out = aOutBuff.Length();
+ stream.next_in = (z_const Bytef*)aString.Data();
+ stream.avail_in = aString.Length();
+
+ // A windowBits of 31 is the default (15) plus 16 for emitting a
+ // gzip header; a memLevel of 8 is the default.
+ zerr =
+ deflateInit2(&stream, Z_DEFAULT_COMPRESSION, Z_DEFLATED,
+ /* windowBits */ 31, /* memLevel */ 8, Z_DEFAULT_STRATEGY);
+ if (zerr != Z_OK) {
+ return NS_ERROR_FAILURE;
+ }
+
+ zerr = deflate(&stream, Z_FINISH);
+ outSize = stream.total_out;
+ deflateEnd(&stream);
+
+ if (zerr != Z_STREAM_END) {
+ return NS_ERROR_FAILURE;
+ }
+
+ aOutBuff.TruncateLength(outSize);
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+nsProfiler::GetProfileDataAsGzippedArrayBuffer(double aSinceTime,
+ JSContext* aCx,
+ Promise** aPromise) {
+ MOZ_ASSERT(NS_IsMainThread());
+
+ if (!profiler_is_active()) {
+ return NS_ERROR_FAILURE;
+ }
+
+ if (NS_WARN_IF(!aCx)) {
+ return NS_ERROR_FAILURE;
+ }
+
+ nsIGlobalObject* globalObject = xpc::CurrentNativeGlobal(aCx);
+ if (NS_WARN_IF(!globalObject)) {
+ return NS_ERROR_FAILURE;
+ }
+
+ ErrorResult result;
+ RefPtr<Promise> promise = Promise::Create(globalObject, result);
+ if (NS_WARN_IF(result.Failed())) {
+ return result.StealNSResult();
+ }
+
+ StartGathering(aSinceTime)
+ ->Then(
+ GetMainThreadSerialEventTarget(), __func__,
+ [promise](const mozilla::ProfileAndAdditionalInformation& aResult) {
+ AutoJSAPI jsapi;
+ if (NS_WARN_IF(!jsapi.Init(promise->GetGlobalObject()))) {
+ // We're really hosed if we can't get a JS context for some
+ // reason.
+ promise->MaybeReject(NS_ERROR_DOM_UNKNOWN_ERR);
+ return;
+ }
+
+ FallibleTArray<uint8_t> outBuff;
+ nsresult result = CompressString(aResult.mProfile, outBuff);
+
+ if (result != NS_OK) {
+ promise->MaybeReject(result);
+ return;
+ }
+
+ JSContext* cx = jsapi.cx();
+ // Get the profile typedArray.
+ JSObject* typedArray = dom::ArrayBuffer::Create(
+ cx, outBuff.Length(), outBuff.Elements());
+ if (!typedArray) {
+ promise->MaybeReject(NS_ERROR_OUT_OF_MEMORY);
+ return;
+ }
+ JS::Rooted<JS::Value> typedArrayValue(cx,
+ JS::ObjectValue(*typedArray));
+ // Get the additional information object.
+ JS::Rooted<JS::Value> additionalInfoVal(cx);
+ if (aResult.mAdditionalInformation.isSome()) {
+ aResult.mAdditionalInformation->ToJSValue(cx, &additionalInfoVal);
+ } else {
+ additionalInfoVal.setUndefined();
+ }
+
+ // Create the return object.
+ JS::Rooted<JSObject*> resultObj(cx, JS_NewPlainObject(cx));
+ JS_SetProperty(cx, resultObj, "profile", typedArrayValue);
+ JS_SetProperty(cx, resultObj, "additionalInformation",
+ additionalInfoVal);
+ promise->MaybeResolve(resultObj);
+ },
+ [promise](nsresult aRv) { promise->MaybeReject(aRv); });
+
+ promise.forget(aPromise);
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+nsProfiler::DumpProfileToFileAsync(const nsACString& aFilename,
+ double aSinceTime, JSContext* aCx,
+ Promise** aPromise) {
+ MOZ_ASSERT(NS_IsMainThread());
+
+ if (!profiler_is_active()) {
+ return NS_ERROR_FAILURE;
+ }
+
+ if (NS_WARN_IF(!aCx)) {
+ return NS_ERROR_FAILURE;
+ }
+
+ nsIGlobalObject* globalObject = xpc::CurrentNativeGlobal(aCx);
+ if (NS_WARN_IF(!globalObject)) {
+ return NS_ERROR_FAILURE;
+ }
+
+ ErrorResult result;
+ RefPtr<Promise> promise = Promise::Create(globalObject, result);
+ if (NS_WARN_IF(result.Failed())) {
+ return result.StealNSResult();
+ }
+
+ nsCString filename(aFilename);
+
+ StartGathering(aSinceTime)
+ ->Then(
+ GetMainThreadSerialEventTarget(), __func__,
+ [filename,
+ promise](const mozilla::ProfileAndAdditionalInformation& aResult) {
+ if (aResult.mProfile.Length() >=
+ size_t(std::numeric_limits<std::streamsize>::max())) {
+ promise->MaybeReject(NS_ERROR_FILE_TOO_BIG);
+ return;
+ }
+
+ std::ofstream stream;
+ stream.open(filename.get());
+ if (!stream.is_open()) {
+ promise->MaybeReject(NS_ERROR_FILE_UNRECOGNIZED_PATH);
+ return;
+ }
+
+ stream.write(aResult.mProfile.get(),
+ std::streamsize(aResult.mProfile.Length()));
+ stream.close();
+
+ promise->MaybeResolveWithUndefined();
+ },
+ [promise](nsresult aRv) { promise->MaybeReject(aRv); });
+
+ promise.forget(aPromise);
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+nsProfiler::GetSymbolTable(const nsACString& aDebugPath,
+ const nsACString& aBreakpadID, JSContext* aCx,
+ Promise** aPromise) {
+ MOZ_ASSERT(NS_IsMainThread());
+
+ if (NS_WARN_IF(!aCx)) {
+ return NS_ERROR_FAILURE;
+ }
+
+ nsIGlobalObject* globalObject =
+ xpc::NativeGlobal(JS::CurrentGlobalOrNull(aCx));
+
+ if (NS_WARN_IF(!globalObject)) {
+ return NS_ERROR_FAILURE;
+ }
+
+ ErrorResult result;
+ RefPtr<Promise> promise = Promise::Create(globalObject, result);
+ if (NS_WARN_IF(result.Failed())) {
+ return result.StealNSResult();
+ }
+
+ GetSymbolTableMozPromise(aDebugPath, aBreakpadID)
+ ->Then(
+ GetMainThreadSerialEventTarget(), __func__,
+ [promise](const SymbolTable& aSymbolTable) {
+ AutoJSAPI jsapi;
+ if (NS_WARN_IF(!jsapi.Init(promise->GetGlobalObject()))) {
+ // We're really hosed if we can't get a JS context for some
+ // reason.
+ promise->MaybeReject(NS_ERROR_DOM_UNKNOWN_ERR);
+ return;
+ }
+
+ JSContext* cx = jsapi.cx();
+
+ JS::Rooted<JSObject*> addrsArray(
+ cx, dom::Uint32Array::Create(cx, aSymbolTable.mAddrs.Length(),
+ aSymbolTable.mAddrs.Elements()));
+ JS::Rooted<JSObject*> indexArray(
+ cx, dom::Uint32Array::Create(cx, aSymbolTable.mIndex.Length(),
+ aSymbolTable.mIndex.Elements()));
+ JS::Rooted<JSObject*> bufferArray(
+ cx, dom::Uint8Array::Create(cx, aSymbolTable.mBuffer.Length(),
+ aSymbolTable.mBuffer.Elements()));
+
+ if (addrsArray && indexArray && bufferArray) {
+ JS::Rooted<JSObject*> tuple(cx, JS::NewArrayObject(cx, 3));
+ JS_SetElement(cx, tuple, 0, addrsArray);
+ JS_SetElement(cx, tuple, 1, indexArray);
+ JS_SetElement(cx, tuple, 2, bufferArray);
+ promise->MaybeResolve(tuple);
+ } else {
+ promise->MaybeReject(NS_ERROR_FAILURE);
+ }
+ },
+ [promise](nsresult aRv) { promise->MaybeReject(aRv); });
+
+ promise.forget(aPromise);
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+nsProfiler::GetElapsedTime(double* aElapsedTime) {
+ *aElapsedTime = profiler_time();
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+nsProfiler::IsActive(bool* aIsActive) {
+ *aIsActive = profiler_is_active();
+ return NS_OK;
+}
+
+static void GetArrayOfStringsForFeatures(uint32_t aFeatures,
+ nsTArray<nsCString>& aFeatureList) {
+#define COUNT_IF_SET(n_, str_, Name_, desc_) \
+ if (ProfilerFeature::Has##Name_(aFeatures)) { \
+ len++; \
+ }
+
+ // Count the number of features in use.
+ uint32_t len = 0;
+ PROFILER_FOR_EACH_FEATURE(COUNT_IF_SET)
+
+#undef COUNT_IF_SET
+
+ aFeatureList.SetCapacity(len);
+
+#define DUP_IF_SET(n_, str_, Name_, desc_) \
+ if (ProfilerFeature::Has##Name_(aFeatures)) { \
+ aFeatureList.AppendElement(str_); \
+ }
+
+ // Insert the strings for the features in use.
+ PROFILER_FOR_EACH_FEATURE(DUP_IF_SET)
+
+#undef DUP_IF_SET
+}
+
+NS_IMETHODIMP
+nsProfiler::GetFeatures(nsTArray<nsCString>& aFeatureList) {
+ uint32_t features = profiler_get_available_features();
+ GetArrayOfStringsForFeatures(features, aFeatureList);
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+nsProfiler::GetAllFeatures(nsTArray<nsCString>& aFeatureList) {
+ GetArrayOfStringsForFeatures((uint32_t)-1, aFeatureList);
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+nsProfiler::GetBufferInfo(uint32_t* aCurrentPosition, uint32_t* aTotalSize,
+ uint32_t* aGeneration) {
+ MOZ_ASSERT(aCurrentPosition);
+ MOZ_ASSERT(aTotalSize);
+ MOZ_ASSERT(aGeneration);
+ Maybe<ProfilerBufferInfo> info = profiler_get_buffer_info();
+ if (info) {
+ *aCurrentPosition = info->mRangeEnd % info->mEntryCount;
+ *aTotalSize = info->mEntryCount;
+ *aGeneration = info->mRangeEnd / info->mEntryCount;
+ } else {
+ *aCurrentPosition = 0;
+ *aTotalSize = 0;
+ *aGeneration = 0;
+ }
+ return NS_OK;
+}
+
+bool nsProfiler::SendProgressRequest(PendingProfile& aPendingProfile) {
+ RefPtr<ProfilerParent::SingleProcessProgressPromise> progressPromise =
+ ProfilerParent::RequestGatherProfileProgress(aPendingProfile.childPid);
+ if (!progressPromise) {
+ LOG("RequestGatherProfileProgress(%u) -> null!",
+ unsigned(aPendingProfile.childPid));
+ LogEvent([&](Json::Value& aEvent) {
+ aEvent.append(
+ Json::StaticString{"Failed to send progress request to pid:"});
+ aEvent.append(Json::Value::UInt64(aPendingProfile.childPid));
+ });
+ // Failed to send request.
+ return false;
+ }
+
+ DEBUG_LOG("RequestGatherProfileProgress(%u) sent...",
+ unsigned(aPendingProfile.childPid));
+ LogEvent([&](Json::Value& aEvent) {
+ aEvent.append(Json::StaticString{"Requested progress from pid:"});
+ aEvent.append(Json::Value::UInt64(aPendingProfile.childPid));
+ });
+ aPendingProfile.lastProgressRequest = TimeStamp::Now();
+ progressPromise->Then(
+ GetMainThreadSerialEventTarget(), __func__,
+ [self = RefPtr<nsProfiler>(this),
+ childPid = aPendingProfile.childPid](GatherProfileProgress&& aResult) {
+ if (!self->mGathering) {
+ return;
+ }
+ PendingProfile* pendingProfile = self->GetPendingProfile(childPid);
+ DEBUG_LOG(
+ "RequestGatherProfileProgress(%u) response: %.2f '%s' "
+ "(%u were pending, %s %u)",
+ unsigned(childPid),
+ ProportionValue::FromUnderlyingType(
+ aResult.progressProportionValueUnderlyingType())
+ .ToDouble() *
+ 100.0,
+ aResult.progressLocation().Data(),
+ unsigned(self->mPendingProfiles.length()),
+ pendingProfile ? "including" : "excluding", unsigned(childPid));
+ self->LogEvent([&](Json::Value& aEvent) {
+ aEvent.append(
+ Json::StaticString{"Got response from pid, with progress:"});
+ aEvent.append(Json::Value::UInt64(childPid));
+ aEvent.append(
+ Json::Value{ProportionValue::FromUnderlyingType(
+ aResult.progressProportionValueUnderlyingType())
+ .ToDouble() *
+ 100.0});
+ });
+ if (pendingProfile) {
+ // We have a progress report for a still-pending profile.
+ pendingProfile->lastProgressResponse = TimeStamp::Now();
+ // Has it actually made progress?
+ if (aResult.progressProportionValueUnderlyingType() !=
+ pendingProfile->progressProportion.ToUnderlyingType()) {
+ pendingProfile->lastProgressChange =
+ pendingProfile->lastProgressResponse;
+ pendingProfile->progressProportion =
+ ProportionValue::FromUnderlyingType(
+ aResult.progressProportionValueUnderlyingType());
+ pendingProfile->progressLocation = aResult.progressLocation();
+ self->RestartGatheringTimer();
+ }
+ }
+ },
+ [self = RefPtr<nsProfiler>(this), childPid = aPendingProfile.childPid](
+ ipc::ResponseRejectReason&& aReason) {
+ if (!self->mGathering) {
+ return;
+ }
+ PendingProfile* pendingProfile = self->GetPendingProfile(childPid);
+ LOG("RequestGatherProfileProgress(%u) rejection: %d "
+ "(%u were pending, %s %u)",
+ unsigned(childPid), (int)aReason,
+ unsigned(self->mPendingProfiles.length()),
+ pendingProfile ? "including" : "excluding", unsigned(childPid));
+ self->LogEvent([&](Json::Value& aEvent) {
+ aEvent.append(Json::StaticString{
+ "Got progress request rejection from pid, with reason:"});
+ aEvent.append(Json::Value::UInt64(childPid));
+ aEvent.append(Json::Value::UInt{static_cast<unsigned>(aReason)});
+ });
+ if (pendingProfile) {
+ // Failure response, assume the child process is gone.
+ MOZ_ASSERT(self->mPendingProfiles.begin() <= pendingProfile &&
+ pendingProfile < self->mPendingProfiles.end());
+ self->mPendingProfiles.erase(pendingProfile);
+ if (self->mPendingProfiles.empty()) {
+ // We've got all of the async profiles now. Let's finish off the
+ // profile and resolve the Promise.
+ self->FinishGathering();
+ }
+ }
+ });
+ return true;
+}
+
+/* static */ void nsProfiler::GatheringTimerCallback(nsITimer* aTimer,
+ void* aClosure) {
+ MOZ_RELEASE_ASSERT(NS_IsMainThread());
+ nsCOMPtr<nsIProfiler> profiler(
+ do_GetService("@mozilla.org/tools/profiler;1"));
+ if (!profiler) {
+ // No (more) profiler service.
+ return;
+ }
+ nsProfiler* self = static_cast<nsProfiler*>(profiler.get());
+ if (self != aClosure) {
+ // Different service object!?
+ return;
+ }
+ if (aTimer != self->mGatheringTimer) {
+ // This timer was cancelled after this callback was queued.
+ return;
+ }
+
+ bool progressWasMade = false;
+
+ // Going backwards, it's easier and cheaper to erase elements if needed.
+ for (auto iPlus1 = self->mPendingProfiles.length(); iPlus1 != 0; --iPlus1) {
+ PendingProfile& pendingProfile = self->mPendingProfiles[iPlus1 - 1];
+
+ bool needToSendProgressRequest = false;
+ if (pendingProfile.lastProgressRequest.IsNull()) {
+ DEBUG_LOG("GatheringTimerCallback() - child %u: No data yet",
+ unsigned(pendingProfile.childPid));
+ // First time going through the list, send an initial progress request.
+ needToSendProgressRequest = true;
+ // We pretend that progress was made, so we don't give up yet.
+ progressWasMade = true;
+ } else if (pendingProfile.lastProgressResponse.IsNull()) {
+ LOG("GatheringTimerCallback() - child %u: Waiting for first response",
+ unsigned(pendingProfile.childPid));
+ // Still waiting for the first response, no progress made here, don't send
+ // another request.
+ } else if (pendingProfile.lastProgressResponse <=
+ pendingProfile.lastProgressRequest) {
+ LOG("GatheringTimerCallback() - child %u: Waiting for response",
+ unsigned(pendingProfile.childPid));
+ // Still waiting for a response to the last request, no progress made
+ // here, don't send another request.
+ } else if (pendingProfile.lastProgressChange.IsNull()) {
+ LOG("GatheringTimerCallback() - child %u: Still waiting for first change",
+ unsigned(pendingProfile.childPid));
+ // Still waiting for the first change, no progress made here, but send a
+ // new request.
+ needToSendProgressRequest = true;
+ } else if (pendingProfile.lastProgressRequest <
+ pendingProfile.lastProgressChange) {
+ DEBUG_LOG("GatheringTimerCallback() - child %u: Recent change",
+ unsigned(pendingProfile.childPid));
+ // We have a recent change, progress was made.
+ needToSendProgressRequest = true;
+ progressWasMade = true;
+ } else {
+ LOG("GatheringTimerCallback() - child %u: No recent change",
+ unsigned(pendingProfile.childPid));
+ needToSendProgressRequest = true;
+ }
+
+ // And send a new progress request.
+ if (needToSendProgressRequest) {
+ if (!self->SendProgressRequest(pendingProfile)) {
+ // Failed to even send the request, consider this process gone.
+ self->mPendingProfiles.erase(&pendingProfile);
+ LOG("... Failed to send progress request");
+ } else {
+ DEBUG_LOG("... Sent progress request");
+ }
+ } else {
+ DEBUG_LOG("... No progress request");
+ }
+ }
+
+ if (self->mPendingProfiles.empty()) {
+ // We've got all of the async profiles now. Let's finish off the profile
+ // and resolve the Promise.
+ self->FinishGathering();
+ return;
+ }
+
+ // Not finished yet.
+
+ if (progressWasMade) {
+ // We made some progress, just restart the timer.
+ DEBUG_LOG("GatheringTimerCallback() - Progress made, restart timer");
+ self->RestartGatheringTimer();
+ return;
+ }
+
+ DEBUG_LOG("GatheringTimerCallback() - Timeout!");
+ self->mGatheringTimer = nullptr;
+ if (!profiler_is_active() || !self->mGathering) {
+ // Not gathering anymore.
+ return;
+ }
+ self->LogEvent([&](Json::Value& aEvent) {
+ aEvent.append(Json::StaticString{
+ "No progress made recently, giving up; pending pids:"});
+ for (const PendingProfile& pendingProfile : self->mPendingProfiles) {
+ aEvent.append(Json::Value::UInt64(pendingProfile.childPid));
+ }
+ });
+ NS_WARNING("Profiler failed to gather profiles from all sub-processes");
+ // We have really reached a timeout while gathering, finish now.
+ // TODO: Add information about missing processes.
+ self->FinishGathering();
+}
+
+void nsProfiler::RestartGatheringTimer() {
+ if (mGatheringTimer) {
+ uint32_t delayMs = 0;
+ const nsresult r = mGatheringTimer->GetDelay(&delayMs);
+ mGatheringTimer->Cancel();
+ if (NS_FAILED(r) || delayMs == 0 ||
+ NS_FAILED(mGatheringTimer->InitWithNamedFuncCallback(
+ GatheringTimerCallback, this, delayMs,
+ nsITimer::TYPE_ONE_SHOT_LOW_PRIORITY,
+ "nsProfilerGatheringTimer"))) {
+ // Can't restart the timer, so we can't wait any longer.
+ FinishGathering();
+ }
+ }
+}
+
+nsProfiler::PendingProfile* nsProfiler::GetPendingProfile(
+ base::ProcessId aChildPid) {
+ for (PendingProfile& pendingProfile : mPendingProfiles) {
+ if (pendingProfile.childPid == aChildPid) {
+ return &pendingProfile;
+ }
+ }
+ return nullptr;
+}
+
+void nsProfiler::GatheredOOPProfile(
+ base::ProcessId aChildPid, const nsACString& aProfile,
+ mozilla::Maybe<ProfileGenerationAdditionalInformation>&&
+ aAdditionalInformation) {
+ MOZ_RELEASE_ASSERT(NS_IsMainThread());
+
+ if (!profiler_is_active()) {
+ return;
+ }
+
+ if (!mGathering) {
+ // If we're not actively gathering, then we don't actually care that we
+ // gathered a profile here. This can happen for processes that exit while
+ // profiling.
+ return;
+ }
+
+ MOZ_RELEASE_ASSERT(mWriter.isSome(),
+ "Should always have a writer if mGathering is true");
+
+ // Combine all the additional information into a single struct.
+ if (aAdditionalInformation.isSome()) {
+ mProfileGenerationAdditionalInformation->Append(
+ std::move(*aAdditionalInformation));
+ }
+
+ if (!aProfile.IsEmpty()) {
+ if (mWriter->ChunkedWriteFunc().Length() + aProfile.Length() <
+ scLengthAccumulationThreshold) {
+ // TODO: Remove PromiseFlatCString, see bug 1657033.
+ mWriter->Splice(PromiseFlatCString(aProfile));
+ } else {
+ LogEvent([&](Json::Value& aEvent) {
+ aEvent.append(
+ Json::StaticString{"Discarded child profile that would make the "
+ "full profile too big, pid and size:"});
+ aEvent.append(Json::Value::UInt64(aChildPid));
+ aEvent.append(Json::Value::UInt64{aProfile.Length()});
+ });
+ }
+ }
+
+ if (PendingProfile* pendingProfile = GetPendingProfile(aChildPid);
+ pendingProfile) {
+ mPendingProfiles.erase(pendingProfile);
+
+ if (mPendingProfiles.empty()) {
+ // We've got all of the async profiles now. Let's finish off the profile
+ // and resolve the Promise.
+ FinishGathering();
+ }
+ }
+
+ // Not finished yet, restart the timer to let any remaining child enough time
+ // to do their profile-streaming.
+ RestartGatheringTimer();
+}
+
+RefPtr<nsProfiler::GatheringPromiseAndroid>
+nsProfiler::GetProfileDataAsGzippedArrayBufferAndroid(double aSinceTime) {
+ MOZ_ASSERT(NS_IsMainThread());
+
+ if (!profiler_is_active()) {
+ return GatheringPromiseAndroid::CreateAndReject(NS_ERROR_FAILURE, __func__);
+ }
+
+ return StartGathering(aSinceTime)
+ ->Then(
+ GetMainThreadSerialEventTarget(), __func__,
+ [](const mozilla::ProfileAndAdditionalInformation& aResult) {
+ FallibleTArray<uint8_t> outBuff;
+ nsresult result = CompressString(aResult.mProfile, outBuff);
+ if (result != NS_OK) {
+ return GatheringPromiseAndroid::CreateAndReject(result, __func__);
+ }
+ return GatheringPromiseAndroid::CreateAndResolve(std::move(outBuff),
+ __func__);
+ },
+ [](nsresult aRv) {
+ return GatheringPromiseAndroid::CreateAndReject(aRv, __func__);
+ });
+}
+
+RefPtr<nsProfiler::GatheringPromise> nsProfiler::StartGathering(
+ double aSinceTime) {
+ MOZ_RELEASE_ASSERT(NS_IsMainThread());
+
+ if (mGathering) {
+ // If we're already gathering, return a rejected promise - this isn't
+ // going to end well.
+ return GatheringPromise::CreateAndReject(NS_ERROR_NOT_AVAILABLE, __func__);
+ }
+
+ mGathering = true;
+ mGatheringLog = mozilla::MakeUnique<Json::Value>(Json::objectValue);
+ (*mGatheringLog)[Json::StaticString{
+ "profileGatheringLogBegin" TIMESTAMP_JSON_SUFFIX}] =
+ ProfilingLog::Timestamp();
+
+ if (mGatheringTimer) {
+ mGatheringTimer->Cancel();
+ mGatheringTimer = nullptr;
+ }
+
+ // Start building shared library info starting from the current process.
+ mProfileGenerationAdditionalInformation.emplace(
+ SharedLibraryInfo::GetInfoForSelf());
+
+ // Request profiles from the other processes. This will trigger asynchronous
+ // calls to ProfileGatherer::GatheredOOPProfile as the profiles arrive.
+ //
+ // Do this before the call to profiler_stream_json_for_this_process() because
+ // that call is slow and we want to let the other processes grab their
+ // profiles as soon as possible.
+ nsTArray<ProfilerParent::SingleProcessProfilePromiseAndChildPid> profiles =
+ ProfilerParent::GatherProfiles();
+
+ MOZ_ASSERT(mPendingProfiles.empty());
+ if (!mPendingProfiles.reserve(profiles.Length())) {
+ ResetGathering(NS_ERROR_OUT_OF_MEMORY);
+ return GatheringPromise::CreateAndReject(NS_ERROR_OUT_OF_MEMORY, __func__);
+ }
+
+ mFailureLatchSource.emplace();
+ mWriter.emplace(*mFailureLatchSource);
+
+ UniquePtr<ProfilerCodeAddressService> service =
+ profiler_code_address_service_for_presymbolication();
+
+ // Start building up the JSON result and grab the profile from this process.
+ mWriter->Start();
+ auto rv = profiler_stream_json_for_this_process(*mWriter, aSinceTime,
+ /* aIsShuttingDown */ false,
+ service.get());
+ if (rv.isErr()) {
+ // The profiler is inactive. This either means that it was inactive even
+ // at the time that ProfileGatherer::Start() was called, or that it was
+ // stopped on a different thread since that call. Either way, we need to
+ // reject the promise and stop gathering.
+ ResetGathering(NS_ERROR_NOT_AVAILABLE);
+ return GatheringPromise::CreateAndReject(NS_ERROR_NOT_AVAILABLE, __func__);
+ }
+
+ LogEvent([&](Json::Value& aEvent) {
+ aEvent.append(
+ Json::StaticString{"Generated parent process profile, size:"});
+ aEvent.append(Json::Value::UInt64{mWriter->ChunkedWriteFunc().Length()});
+ });
+
+ mWriter->StartArrayProperty("processes");
+
+ // If we have any process exit profiles, add them immediately.
+ if (Vector<nsCString> exitProfiles = profiler_move_exit_profiles();
+ !exitProfiles.empty()) {
+ for (auto& exitProfile : exitProfiles) {
+ if (!exitProfile.IsEmpty()) {
+ if (exitProfile[0] == '*') {
+ LogEvent([&](Json::Value& aEvent) {
+ aEvent.append(
+ Json::StaticString{"Exit non-profile with error message:"});
+ aEvent.append(exitProfile.Data() + 1);
+ });
+ } else if (mWriter->ChunkedWriteFunc().Length() + exitProfile.Length() <
+ scLengthAccumulationThreshold) {
+ mWriter->Splice(exitProfile);
+ LogEvent([&](Json::Value& aEvent) {
+ aEvent.append(Json::StaticString{"Added exit profile with size:"});
+ aEvent.append(Json::Value::UInt64{exitProfile.Length()});
+ });
+ } else {
+ LogEvent([&](Json::Value& aEvent) {
+ aEvent.append(
+ Json::StaticString{"Discarded an exit profile that would make "
+ "the full profile too big, size:"});
+ aEvent.append(Json::Value::UInt64{exitProfile.Length()});
+ });
+ }
+ }
+ }
+
+ LogEvent([&](Json::Value& aEvent) {
+ aEvent.append(Json::StaticString{
+ "Processed all exit profiles, total size so far:"});
+ aEvent.append(Json::Value::UInt64{mWriter->ChunkedWriteFunc().Length()});
+ });
+ } else {
+ // There are no pending profiles, we're already done.
+ LogEventLiteralString("No exit profiles.");
+ }
+
+ mPromiseHolder.emplace();
+ RefPtr<GatheringPromise> promise = mPromiseHolder->Ensure(__func__);
+
+ // Keep the array property "processes" and the root object in mWriter open
+ // until FinishGathering() is called. As profiles from the other processes
+ // come in, they will be inserted and end up in the right spot.
+ // FinishGathering() will close the array and the root object.
+
+ if (!profiles.IsEmpty()) {
+ // There *are* pending profiles, let's add handlers for their promises.
+
+ // This timeout value is used to monitor progress while gathering child
+ // profiles. The timer will be restarted after we receive a response with
+ // any progress.
+ constexpr uint32_t cMinChildTimeoutS = 1u; // 1 second minimum and default.
+ constexpr uint32_t cMaxChildTimeoutS = 60u; // 1 minute max.
+ uint32_t childTimeoutS = Preferences::GetUint(
+ "devtools.performance.recording.child.timeout_s", cMinChildTimeoutS);
+ if (childTimeoutS < cMinChildTimeoutS) {
+ childTimeoutS = cMinChildTimeoutS;
+ } else if (childTimeoutS > cMaxChildTimeoutS) {
+ childTimeoutS = cMaxChildTimeoutS;
+ }
+ const uint32_t childTimeoutMs = childTimeoutS * PR_MSEC_PER_SEC;
+ Unused << NS_NewTimerWithFuncCallback(
+ getter_AddRefs(mGatheringTimer), GatheringTimerCallback, this,
+ childTimeoutMs, nsITimer::TYPE_ONE_SHOT_LOW_PRIORITY,
+ "nsProfilerGatheringTimer", GetMainThreadSerialEventTarget());
+
+ MOZ_ASSERT(mPendingProfiles.capacity() >= profiles.Length());
+ for (const auto& profile : profiles) {
+ mPendingProfiles.infallibleAppend(PendingProfile{profile.childPid});
+ LogEvent([&](Json::Value& aEvent) {
+ aEvent.append(Json::StaticString{"Waiting for pending profile, pid:"});
+ aEvent.append(Json::Value::UInt64(profile.childPid));
+ });
+ profile.profilePromise->Then(
+ GetMainThreadSerialEventTarget(), __func__,
+ [self = RefPtr<nsProfiler>(this), childPid = profile.childPid](
+ IPCProfileAndAdditionalInformation&& aResult) {
+ PendingProfile* pendingProfile = self->GetPendingProfile(childPid);
+ mozilla::ipc::Shmem profileShmem = aResult.profileShmem();
+ LOG("GatherProfile(%u) response: %u bytes (%u were pending, %s %u)",
+ unsigned(childPid), unsigned(profileShmem.Size<char>()),
+ unsigned(self->mPendingProfiles.length()),
+ pendingProfile ? "including" : "excluding", unsigned(childPid));
+ if (profileShmem.IsReadable()) {
+ self->LogEvent([&](Json::Value& aEvent) {
+ aEvent.append(
+ Json::StaticString{"Got profile from pid, with size:"});
+ aEvent.append(Json::Value::UInt64(childPid));
+ aEvent.append(Json::Value::UInt64{profileShmem.Size<char>()});
+ });
+ const nsDependentCSubstring profileString(
+ profileShmem.get<char>(), profileShmem.Size<char>() - 1);
+ if (profileString.IsEmpty() || profileString[0] != '*') {
+ self->GatheredOOPProfile(
+ childPid, profileString,
+ std::move(aResult.additionalInformation()));
+ } else {
+ self->LogEvent([&](Json::Value& aEvent) {
+ aEvent.append(Json::StaticString{
+ "Child non-profile from pid, with error message:"});
+ aEvent.append(Json::Value::UInt64(childPid));
+ aEvent.append(profileString.Data() + 1);
+ });
+ self->GatheredOOPProfile(childPid, ""_ns, Nothing());
+ }
+ } else {
+ // This can happen if the child failed to allocate
+ // the Shmem (or maliciously sent an invalid Shmem).
+ self->LogEvent([&](Json::Value& aEvent) {
+ aEvent.append(Json::StaticString{"Got failure from pid:"});
+ aEvent.append(Json::Value::UInt64(childPid));
+ });
+ self->GatheredOOPProfile(childPid, ""_ns, Nothing());
+ }
+ },
+ [self = RefPtr<nsProfiler>(this),
+ childPid = profile.childPid](ipc::ResponseRejectReason&& aReason) {
+ PendingProfile* pendingProfile = self->GetPendingProfile(childPid);
+ LOG("GatherProfile(%u) rejection: %d (%u were pending, %s %u)",
+ unsigned(childPid), (int)aReason,
+ unsigned(self->mPendingProfiles.length()),
+ pendingProfile ? "including" : "excluding", unsigned(childPid));
+ self->LogEvent([&](Json::Value& aEvent) {
+ aEvent.append(
+ Json::StaticString{"Got rejection from pid, with reason:"});
+ aEvent.append(Json::Value::UInt64(childPid));
+ aEvent.append(Json::Value::UInt{static_cast<unsigned>(aReason)});
+ });
+ self->GatheredOOPProfile(childPid, ""_ns, Nothing());
+ });
+ }
+ } else {
+ // There are no pending profiles, we're already done.
+ LogEventLiteralString("No pending child profiles.");
+ FinishGathering();
+ }
+
+ return promise;
+}
+
+RefPtr<nsProfiler::SymbolTablePromise> nsProfiler::GetSymbolTableMozPromise(
+ const nsACString& aDebugPath, const nsACString& aBreakpadID) {
+ MozPromiseHolder<SymbolTablePromise> promiseHolder;
+ RefPtr<SymbolTablePromise> promise = promiseHolder.Ensure(__func__);
+
+ if (!mSymbolTableThread) {
+ nsresult rv = NS_NewNamedThread("ProfSymbolTable",
+ getter_AddRefs(mSymbolTableThread));
+ if (NS_WARN_IF(NS_FAILED(rv))) {
+ promiseHolder.Reject(NS_ERROR_FAILURE, __func__);
+ return promise;
+ }
+ }
+
+ nsresult rv = mSymbolTableThread->Dispatch(NS_NewRunnableFunction(
+ "nsProfiler::GetSymbolTableMozPromise runnable on ProfSymbolTable thread",
+ [promiseHolder = std::move(promiseHolder),
+ debugPath = nsCString(aDebugPath),
+ breakpadID = nsCString(aBreakpadID)]() mutable {
+ AUTO_PROFILER_LABEL_DYNAMIC_NSCSTRING("profiler_get_symbol_table",
+ OTHER, debugPath);
+ SymbolTable symbolTable;
+ bool succeeded = profiler_get_symbol_table(
+ debugPath.get(), breakpadID.get(), &symbolTable);
+ if (succeeded) {
+ promiseHolder.Resolve(std::move(symbolTable), __func__);
+ } else {
+ promiseHolder.Reject(NS_ERROR_FAILURE, __func__);
+ }
+ }));
+
+ if (NS_WARN_IF(NS_FAILED(rv))) {
+ // Get-symbol task was not dispatched and therefore won't fulfill the
+ // promise, we must reject the promise now.
+ promiseHolder.Reject(NS_ERROR_FAILURE, __func__);
+ }
+
+ return promise;
+}
+
+void nsProfiler::FinishGathering() {
+ MOZ_RELEASE_ASSERT(NS_IsMainThread());
+ MOZ_RELEASE_ASSERT(mWriter.isSome());
+ MOZ_RELEASE_ASSERT(mPromiseHolder.isSome());
+ MOZ_RELEASE_ASSERT(mProfileGenerationAdditionalInformation.isSome());
+
+ // Close the "processes" array property.
+ mWriter->EndArray();
+
+ if (mGatheringLog) {
+ LogEvent([&](Json::Value& aEvent) {
+ aEvent.append(Json::StaticString{"Finished gathering, total size:"});
+ aEvent.append(Json::Value::UInt64{mWriter->ChunkedWriteFunc().Length()});
+ });
+ (*mGatheringLog)[Json::StaticString{
+ "profileGatheringLogEnd" TIMESTAMP_JSON_SUFFIX}] =
+ ProfilingLog::Timestamp();
+ mWriter->StartObjectProperty("profileGatheringLog");
+ {
+ nsAutoCString pid;
+ pid.AppendInt(int64_t(profiler_current_process_id().ToNumber()));
+ Json::String logString = ToCompactString(*mGatheringLog);
+ mGatheringLog = nullptr;
+ mWriter->SplicedJSONProperty(pid, logString);
+ }
+ mWriter->EndObject();
+ }
+
+ // Close the root object of the generated JSON.
+ mWriter->End();
+
+ if (const char* failure = mWriter->GetFailure(); failure) {
+#ifndef ANDROID
+ fprintf(stderr, "JSON generation failure: %s", failure);
+#else
+ __android_log_print(ANDROID_LOG_INFO, "GeckoProfiler",
+ "JSON generation failure: %s", failure);
+#endif
+ NS_WARNING("Error during JSON generation, probably OOM.");
+ ResetGathering(NS_ERROR_OUT_OF_MEMORY);
+ return;
+ }
+
+ // And try to resolve the promise with the profile JSON.
+ const size_t len = mWriter->ChunkedWriteFunc().Length();
+ if (len >= scLengthMax) {
+ NS_WARNING("Profile JSON is too big to fit in a string.");
+ ResetGathering(NS_ERROR_FILE_TOO_BIG);
+ return;
+ }
+
+ nsCString result;
+ if (!result.SetLength(len, fallible)) {
+ NS_WARNING("Cannot allocate a string for the Profile JSON.");
+ ResetGathering(NS_ERROR_OUT_OF_MEMORY);
+ return;
+ }
+ MOZ_ASSERT(*(result.Data() + len) == '\0',
+ "We expected a null at the end of the string buffer, to be "
+ "rewritten by CopyDataIntoLazilyAllocatedBuffer");
+
+ char* const resultBeginWriting = result.BeginWriting();
+ if (!resultBeginWriting) {
+ NS_WARNING("Cannot access the string to write the Profile JSON.");
+ ResetGathering(NS_ERROR_CACHE_WRITE_ACCESS_DENIED);
+ return;
+ }
+
+ // Here, we have enough space reserved in `result`, starting at
+ // `resultBeginWriting`, copy the JSON profile there.
+ if (!mWriter->ChunkedWriteFunc().CopyDataIntoLazilyAllocatedBuffer(
+ [&](size_t aBufferLen) -> char* {
+ MOZ_RELEASE_ASSERT(aBufferLen == len + 1);
+ return resultBeginWriting;
+ })) {
+ NS_WARNING("Could not copy profile JSON, probably OOM.");
+ ResetGathering(NS_ERROR_FILE_TOO_BIG);
+ return;
+ }
+ MOZ_ASSERT(*(result.Data() + len) == '\0',
+ "We still expected a null at the end of the string buffer");
+
+ mProfileGenerationAdditionalInformation->FinishGathering();
+ mPromiseHolder->Resolve(
+ ProfileAndAdditionalInformation{
+ std::move(result),
+ std::move(*mProfileGenerationAdditionalInformation)},
+ __func__);
+
+ ResetGathering(NS_ERROR_UNEXPECTED);
+}
+
+void nsProfiler::ResetGathering(nsresult aPromiseRejectionIfPending) {
+ // If we have an unfulfilled Promise in flight, we should reject it before
+ // destroying the promise holder.
+ if (mPromiseHolder.isSome()) {
+ mPromiseHolder->RejectIfExists(aPromiseRejectionIfPending, __func__);
+ mPromiseHolder.reset();
+ }
+ mPendingProfiles.clearAndFree();
+ mGathering = false;
+ mGatheringLog = nullptr;
+ if (mGatheringTimer) {
+ mGatheringTimer->Cancel();
+ mGatheringTimer = nullptr;
+ }
+ mWriter.reset();
+ mFailureLatchSource.reset();
+ mProfileGenerationAdditionalInformation.reset();
+}
diff --git a/tools/profiler/gecko/nsProfiler.h b/tools/profiler/gecko/nsProfiler.h
new file mode 100644
index 0000000000..3757df3079
--- /dev/null
+++ b/tools/profiler/gecko/nsProfiler.h
@@ -0,0 +1,117 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef nsProfiler_h
+#define nsProfiler_h
+
+#include "base/process.h"
+#include "mozilla/Attributes.h"
+#include "mozilla/Maybe.h"
+#include "mozilla/MozPromise.h"
+#include "mozilla/ProfileJSONWriter.h"
+#include "mozilla/ProportionValue.h"
+#include "mozilla/TimeStamp.h"
+#include "mozilla/UniquePtr.h"
+#include "mozilla/Vector.h"
+#include "nsIProfiler.h"
+#include "nsITimer.h"
+#include "nsServiceManagerUtils.h"
+#include "ProfilerCodeAddressService.h"
+#include "ProfileAdditionalInformation.h"
+
+namespace Json {
+class Value;
+} // namespace Json
+
+class nsProfiler final : public nsIProfiler {
+ public:
+ nsProfiler();
+
+ NS_DECL_ISUPPORTS
+ NS_DECL_NSIPROFILER
+
+ nsresult Init();
+
+ static nsProfiler* GetOrCreate() {
+ nsCOMPtr<nsIProfiler> iprofiler =
+ do_GetService("@mozilla.org/tools/profiler;1");
+ return static_cast<nsProfiler*>(iprofiler.get());
+ }
+
+ private:
+ ~nsProfiler();
+
+ using GatheringPromiseAndroid =
+ mozilla::MozPromise<FallibleTArray<uint8_t>, nsresult, true>;
+ using GatheringPromise =
+ mozilla::MozPromise<mozilla::ProfileAndAdditionalInformation, nsresult,
+ false>;
+ using SymbolTablePromise =
+ mozilla::MozPromise<mozilla::SymbolTable, nsresult, true>;
+
+ RefPtr<GatheringPromise> StartGathering(double aSinceTime);
+ void GatheredOOPProfile(
+ base::ProcessId aChildPid, const nsACString& aProfile,
+ mozilla::Maybe<mozilla::ProfileGenerationAdditionalInformation>&&
+ aAdditionalInformation);
+ void FinishGathering();
+ void ResetGathering(nsresult aPromiseRejectionIfPending);
+ static void GatheringTimerCallback(nsITimer* aTimer, void* aClosure);
+ void RestartGatheringTimer();
+
+ RefPtr<SymbolTablePromise> GetSymbolTableMozPromise(
+ const nsACString& aDebugPath, const nsACString& aBreakpadID);
+
+ struct ExitProfile {
+ nsCString mJSON;
+ uint64_t mBufferPositionAtGatherTime;
+ };
+
+ struct PendingProfile {
+ base::ProcessId childPid;
+
+ mozilla::ProportionValue progressProportion;
+ nsCString progressLocation;
+
+ mozilla::TimeStamp lastProgressRequest;
+ mozilla::TimeStamp lastProgressResponse;
+ mozilla::TimeStamp lastProgressChange;
+
+ explicit PendingProfile(base::ProcessId aChildPid) : childPid(aChildPid) {}
+ };
+
+ PendingProfile* GetPendingProfile(base::ProcessId aChildPid);
+ // Returns false if the request could not be sent.
+ bool SendProgressRequest(PendingProfile& aPendingProfile);
+
+ // If the log is active, call aJsonLogObjectUpdater(Json::Value&) on the log's
+ // root object.
+ template <typename JsonLogObjectUpdater>
+ void Log(JsonLogObjectUpdater&& aJsonLogObjectUpdater);
+ // If the log is active, call aJsonArrayAppender(Json::Value&) on a Json
+ // array that already contains a timestamp, and to which event-related
+ // elements may be appended.
+ template <typename JsonArrayAppender>
+ void LogEvent(JsonArrayAppender&& aJsonArrayAppender);
+ void LogEventLiteralString(const char* aEventString);
+
+ // These fields are all related to profile gathering.
+ mozilla::Vector<ExitProfile> mExitProfiles;
+ mozilla::Maybe<mozilla::MozPromiseHolder<GatheringPromise>> mPromiseHolder;
+ nsCOMPtr<nsIThread> mSymbolTableThread;
+ mozilla::Maybe<mozilla::FailureLatchSource> mFailureLatchSource;
+ mozilla::Maybe<SpliceableChunkedJSONWriter> mWriter;
+ mozilla::Maybe<mozilla::ProfileGenerationAdditionalInformation>
+ mProfileGenerationAdditionalInformation;
+ mozilla::Vector<PendingProfile> mPendingProfiles;
+ bool mGathering;
+ nsCOMPtr<nsITimer> mGatheringTimer;
+ // Supplemental log to the profiler's "profilingLog" (which has already been
+ // completed in JSON profiles that are gathered).
+ mozilla::UniquePtr<Json::Value> mGatheringLog;
+};
+
+#endif // nsProfiler_h
diff --git a/tools/profiler/gecko/nsProfilerCIID.h b/tools/profiler/gecko/nsProfilerCIID.h
new file mode 100644
index 0000000000..3df44596b1
--- /dev/null
+++ b/tools/profiler/gecko/nsProfilerCIID.h
@@ -0,0 +1,16 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef nsProfilerCIID_h__
+#define nsProfilerCIID_h__
+
+#define NS_PROFILER_CID \
+ { \
+ 0x25db9b8e, 0x8123, 0x4de1, { \
+ 0xb6, 0x6d, 0x8b, 0xbb, 0xed, 0xf2, 0xcd, 0xf4 \
+ } \
+ }
+
+#endif
diff --git a/tools/profiler/gecko/nsProfilerStartParams.cpp b/tools/profiler/gecko/nsProfilerStartParams.cpp
new file mode 100644
index 0000000000..dd7c3f4ab7
--- /dev/null
+++ b/tools/profiler/gecko/nsProfilerStartParams.cpp
@@ -0,0 +1,65 @@
+/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "nsProfilerStartParams.h"
+#include "ipc/IPCMessageUtils.h"
+
+NS_IMPL_ISUPPORTS(nsProfilerStartParams, nsIProfilerStartParams)
+
+nsProfilerStartParams::nsProfilerStartParams(
+ uint32_t aEntries, const mozilla::Maybe<double>& aDuration,
+ double aInterval, uint32_t aFeatures, nsTArray<nsCString>&& aFilters,
+ uint64_t aActiveTabID)
+ : mEntries(aEntries),
+ mDuration(aDuration),
+ mInterval(aInterval),
+ mFeatures(aFeatures),
+ mFilters(std::move(aFilters)),
+ mActiveTabID(aActiveTabID) {}
+
+nsProfilerStartParams::~nsProfilerStartParams() {}
+
+NS_IMETHODIMP
+nsProfilerStartParams::GetEntries(uint32_t* aEntries) {
+ NS_ENSURE_ARG_POINTER(aEntries);
+ *aEntries = mEntries;
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+nsProfilerStartParams::GetDuration(double* aDuration) {
+ NS_ENSURE_ARG_POINTER(aDuration);
+ if (mDuration) {
+ *aDuration = *mDuration;
+ } else {
+ *aDuration = 0;
+ }
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+nsProfilerStartParams::GetInterval(double* aInterval) {
+ NS_ENSURE_ARG_POINTER(aInterval);
+ *aInterval = mInterval;
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+nsProfilerStartParams::GetFeatures(uint32_t* aFeatures) {
+ NS_ENSURE_ARG_POINTER(aFeatures);
+ *aFeatures = mFeatures;
+ return NS_OK;
+}
+
+const nsTArray<nsCString>& nsProfilerStartParams::GetFilters() {
+ return mFilters;
+}
+
+NS_IMETHODIMP
+nsProfilerStartParams::GetActiveTabID(uint64_t* aActiveTabID) {
+ NS_ENSURE_ARG_POINTER(aActiveTabID);
+ *aActiveTabID = mActiveTabID;
+ return NS_OK;
+}
diff --git a/tools/profiler/gecko/nsProfilerStartParams.h b/tools/profiler/gecko/nsProfilerStartParams.h
new file mode 100644
index 0000000000..25c2b5082f
--- /dev/null
+++ b/tools/profiler/gecko/nsProfilerStartParams.h
@@ -0,0 +1,36 @@
+/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef _NSPROFILERSTARTPARAMS_H_
+#define _NSPROFILERSTARTPARAMS_H_
+
+#include "nsIProfiler.h"
+#include "nsString.h"
+#include "nsTArray.h"
+
+class nsProfilerStartParams : public nsIProfilerStartParams {
+ public:
+ // This class can be used on multiple threads. For example, it's used for the
+ // observer notification from profiler_start, which can run on any thread but
+ // posts the notification to the main thread.
+ NS_DECL_THREADSAFE_ISUPPORTS
+ NS_DECL_NSIPROFILERSTARTPARAMS
+
+ nsProfilerStartParams(uint32_t aEntries,
+ const mozilla::Maybe<double>& aDuration,
+ double aInterval, uint32_t aFeatures,
+ nsTArray<nsCString>&& aFilters, uint64_t aActiveTabID);
+
+ private:
+ virtual ~nsProfilerStartParams();
+ uint32_t mEntries;
+ mozilla::Maybe<double> mDuration;
+ double mInterval;
+ uint32_t mFeatures;
+ nsTArray<nsCString> mFilters;
+ uint64_t mActiveTabID;
+};
+
+#endif
diff --git a/tools/profiler/lul/AutoObjectMapper.cpp b/tools/profiler/lul/AutoObjectMapper.cpp
new file mode 100644
index 0000000000..f7489fbfee
--- /dev/null
+++ b/tools/profiler/lul/AutoObjectMapper.cpp
@@ -0,0 +1,79 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include <sys/mman.h>
+#include <unistd.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+
+#include "mozilla/Assertions.h"
+#include "mozilla/Sprintf.h"
+
+#include "PlatformMacros.h"
+#include "AutoObjectMapper.h"
+
+// A helper function for creating failure error messages in
+// AutoObjectMapper*::Map.
+static void failedToMessage(void (*aLog)(const char*), const char* aHowFailed,
+ std::string aFileName) {
+ char buf[300];
+ SprintfLiteral(buf, "AutoObjectMapper::Map: Failed to %s \'%s\'", aHowFailed,
+ aFileName.c_str());
+ buf[sizeof(buf) - 1] = 0;
+ aLog(buf);
+}
+
+AutoObjectMapperPOSIX::AutoObjectMapperPOSIX(void (*aLog)(const char*))
+ : mImage(nullptr), mSize(0), mLog(aLog), mIsMapped(false) {}
+
+AutoObjectMapperPOSIX::~AutoObjectMapperPOSIX() {
+ if (!mIsMapped) {
+ // There's nothing to do.
+ MOZ_ASSERT(!mImage);
+ MOZ_ASSERT(mSize == 0);
+ return;
+ }
+ MOZ_ASSERT(mSize > 0);
+ // The following assertion doesn't necessarily have to be true,
+ // but we assume (reasonably enough) that no mmap facility would
+ // be crazy enough to map anything at page zero.
+ MOZ_ASSERT(mImage);
+ munmap(mImage, mSize);
+}
+
+bool AutoObjectMapperPOSIX::Map(/*OUT*/ void** start, /*OUT*/ size_t* length,
+ std::string fileName) {
+ MOZ_ASSERT(!mIsMapped);
+
+ int fd = open(fileName.c_str(), O_RDONLY);
+ if (fd == -1) {
+ failedToMessage(mLog, "open", fileName);
+ return false;
+ }
+
+ struct stat st;
+ int err = fstat(fd, &st);
+ size_t sz = (err == 0) ? st.st_size : 0;
+ if (err != 0 || sz == 0) {
+ failedToMessage(mLog, "fstat", fileName);
+ close(fd);
+ return false;
+ }
+
+ void* image = mmap(nullptr, sz, PROT_READ, MAP_SHARED, fd, 0);
+ if (image == MAP_FAILED) {
+ failedToMessage(mLog, "mmap", fileName);
+ close(fd);
+ return false;
+ }
+
+ close(fd);
+ mIsMapped = true;
+ mImage = *start = image;
+ mSize = *length = sz;
+ return true;
+}
diff --git a/tools/profiler/lul/AutoObjectMapper.h b/tools/profiler/lul/AutoObjectMapper.h
new file mode 100644
index 0000000000..f63aa43e0e
--- /dev/null
+++ b/tools/profiler/lul/AutoObjectMapper.h
@@ -0,0 +1,64 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef AutoObjectMapper_h
+#define AutoObjectMapper_h
+
+#include <string>
+
+#include "mozilla/Attributes.h"
+#include "PlatformMacros.h"
+
+// A (nearly-) RAII class that maps an object in and then unmaps it on
+// destruction. This base class version uses the "normal" POSIX
+// functions: open, fstat, close, mmap, munmap.
+
+class MOZ_STACK_CLASS AutoObjectMapperPOSIX {
+ public:
+ // The constructor does not attempt to map the file, because that
+ // might fail. Instead, once the object has been constructed,
+ // call Map() to attempt the mapping. There is no corresponding
+ // Unmap() since the unmapping is done in the destructor. Failure
+ // messages are sent to |aLog|.
+ explicit AutoObjectMapperPOSIX(void (*aLog)(const char*));
+
+ // Unmap the file on destruction of this object.
+ ~AutoObjectMapperPOSIX();
+
+ // Map |fileName| into the address space and return the mapping
+ // extents. If the file is zero sized this will fail. The file is
+ // mapped read-only and private. Returns true iff the mapping
+ // succeeded, in which case *start and *length hold its extent.
+ // Once a call to Map succeeds, all subsequent calls to it will
+ // fail.
+ bool Map(/*OUT*/ void** start, /*OUT*/ size_t* length, std::string fileName);
+
+ protected:
+ // If we are currently holding a mapped object, these record the
+ // mapped address range.
+ void* mImage;
+ size_t mSize;
+
+ // A logging sink, for complaining about mapping failures.
+ void (*mLog)(const char*);
+
+ private:
+ // Are we currently holding a mapped object? This is private to
+ // the base class. Derived classes need to have their own way to
+ // track whether they are holding a mapped object.
+ bool mIsMapped;
+
+ // Disable copying and assignment.
+ AutoObjectMapperPOSIX(const AutoObjectMapperPOSIX&);
+ AutoObjectMapperPOSIX& operator=(const AutoObjectMapperPOSIX&);
+ // Disable heap allocation of this class.
+ void* operator new(size_t);
+ void* operator new[](size_t);
+ void operator delete(void*);
+ void operator delete[](void*);
+};
+
+#endif // AutoObjectMapper_h
diff --git a/tools/profiler/lul/LulCommon.cpp b/tools/profiler/lul/LulCommon.cpp
new file mode 100644
index 0000000000..428f102c42
--- /dev/null
+++ b/tools/profiler/lul/LulCommon.cpp
@@ -0,0 +1,100 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+
+// Copyright (c) 2011, 2013 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.
+
+// Original author: Jim Blandy <jimb@mozilla.com> <jimb@red-bean.com>
+
+// This file is derived from the following files in
+// toolkit/crashreporter/google-breakpad:
+// src/common/module.cc
+// src/common/unique_string.cc
+
+// There's no internal-only interface for LulCommon. Hence include
+// the external interface directly.
+#include "LulCommonExt.h"
+
+#include <stdlib.h>
+#include <string.h>
+
+#include <string>
+#include <map>
+
+namespace lul {
+
+using std::string;
+
+////////////////////////////////////////////////////////////////
+// Module
+//
+Module::Module(const string& name, const string& os, const string& architecture,
+ const string& id)
+ : name_(name), os_(os), architecture_(architecture), id_(id) {}
+
+Module::~Module() {}
+
+////////////////////////////////////////////////////////////////
+// UniqueString
+//
+class UniqueString {
+ public:
+ explicit UniqueString(string str) { str_ = strdup(str.c_str()); }
+ ~UniqueString() { free(reinterpret_cast<void*>(const_cast<char*>(str_))); }
+ const char* str_;
+};
+
+const char* FromUniqueString(const UniqueString* ustr) { return ustr->str_; }
+
+bool IsEmptyUniqueString(const UniqueString* ustr) {
+ return (ustr->str_)[0] == '\0';
+}
+
+////////////////////////////////////////////////////////////////
+// UniqueStringUniverse
+//
+UniqueStringUniverse::~UniqueStringUniverse() {
+ for (std::map<string, UniqueString*>::iterator it = map_.begin();
+ it != map_.end(); it++) {
+ delete it->second;
+ }
+}
+
+const UniqueString* UniqueStringUniverse::ToUniqueString(string str) {
+ std::map<string, UniqueString*>::iterator it = map_.find(str);
+ if (it == map_.end()) {
+ UniqueString* ustr = new UniqueString(str);
+ map_[str] = ustr;
+ return ustr;
+ } else {
+ return it->second;
+ }
+}
+
+} // namespace lul
diff --git a/tools/profiler/lul/LulCommonExt.h b/tools/profiler/lul/LulCommonExt.h
new file mode 100644
index 0000000000..b20a7321ff
--- /dev/null
+++ b/tools/profiler/lul/LulCommonExt.h
@@ -0,0 +1,509 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+
+// Copyright (c) 2006, 2010, 2012, 2013 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.
+
+// Original author: Jim Blandy <jimb@mozilla.com> <jimb@red-bean.com>
+
+// module.h: Define google_breakpad::Module. A Module holds debugging
+// information, and can write that information out as a Breakpad
+// symbol file.
+
+// (C) Copyright Greg Colvin and Beman Dawes 1998, 1999.
+// Copyright (c) 2001, 2002 Peter Dimov
+//
+// Permission to copy, use, modify, sell and distribute this software
+// is granted provided this copyright notice appears in all copies.
+// This software is provided "as is" without express or implied
+// warranty, and with no claim as to its suitability for any purpose.
+//
+// See http://www.boost.org/libs/smart_ptr/scoped_ptr.htm for documentation.
+//
+
+// This file is derived from the following files in
+// toolkit/crashreporter/google-breakpad:
+// src/common/unique_string.h
+// src/common/scoped_ptr.h
+// src/common/module.h
+
+// External interface for the "Common" component of LUL.
+
+#ifndef LulCommonExt_h
+#define LulCommonExt_h
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <stdint.h>
+
+#include <string>
+#include <map>
+#include <vector>
+#include <cstddef> // for std::ptrdiff_t
+
+#include "mozilla/Assertions.h"
+
+namespace lul {
+
+using std::map;
+using std::string;
+
+////////////////////////////////////////////////////////////////
+// UniqueString
+//
+
+// Abstract type
+class UniqueString;
+
+// Get the contained C string (debugging only)
+const char* FromUniqueString(const UniqueString*);
+
+// Is the given string empty (that is, "") ?
+bool IsEmptyUniqueString(const UniqueString*);
+
+////////////////////////////////////////////////////////////////
+// UniqueStringUniverse
+//
+
+// All UniqueStrings live in some specific UniqueStringUniverse.
+class UniqueStringUniverse {
+ public:
+ UniqueStringUniverse() {}
+ ~UniqueStringUniverse();
+ // Convert a |string| to a UniqueString, that lives in this universe.
+ const UniqueString* ToUniqueString(string str);
+
+ private:
+ map<string, UniqueString*> map_;
+};
+
+////////////////////////////////////////////////////////////////
+// GUID
+//
+
+typedef struct {
+ uint32_t data1;
+ uint16_t data2;
+ uint16_t data3;
+ uint8_t data4[8];
+} MDGUID; // GUID
+
+typedef MDGUID GUID;
+
+////////////////////////////////////////////////////////////////
+// scoped_ptr
+//
+
+// scoped_ptr mimics a built-in pointer except that it guarantees deletion
+// of the object pointed to, either on destruction of the scoped_ptr or via
+// an explicit reset(). scoped_ptr is a simple solution for simple needs;
+// use shared_ptr or std::auto_ptr if your needs are more complex.
+
+// *** NOTE ***
+// If your scoped_ptr is a class member of class FOO pointing to a
+// forward declared type BAR (as shown below), then you MUST use a non-inlined
+// version of the destructor. The destructor of a scoped_ptr (called from
+// FOO's destructor) must have a complete definition of BAR in order to
+// destroy it. Example:
+//
+// -- foo.h --
+// class BAR;
+//
+// class FOO {
+// public:
+// FOO();
+// ~FOO(); // Required for sources that instantiate class FOO to compile!
+//
+// private:
+// scoped_ptr<BAR> bar_;
+// };
+//
+// -- foo.cc --
+// #include "foo.h"
+// FOO::~FOO() {} // Empty, but must be non-inlined to FOO's class definition.
+
+// scoped_ptr_malloc added by Google
+// When one of these goes out of scope, instead of doing a delete or
+// delete[], it calls free(). scoped_ptr_malloc<char> is likely to see
+// much more use than any other specializations.
+
+// release() added by Google
+// Use this to conditionally transfer ownership of a heap-allocated object
+// to the caller, usually on method success.
+
+template <typename T>
+class scoped_ptr {
+ private:
+ T* ptr;
+
+ scoped_ptr(scoped_ptr const&);
+ scoped_ptr& operator=(scoped_ptr const&);
+
+ public:
+ typedef T element_type;
+
+ explicit scoped_ptr(T* p = 0) : ptr(p) {}
+
+ ~scoped_ptr() { delete ptr; }
+
+ void reset(T* p = 0) {
+ if (ptr != p) {
+ delete ptr;
+ ptr = p;
+ }
+ }
+
+ T& operator*() const {
+ MOZ_ASSERT(ptr != 0);
+ return *ptr;
+ }
+
+ T* operator->() const {
+ MOZ_ASSERT(ptr != 0);
+ return ptr;
+ }
+
+ bool operator==(T* p) const { return ptr == p; }
+
+ bool operator!=(T* p) const { return ptr != p; }
+
+ T* get() const { return ptr; }
+
+ void swap(scoped_ptr& b) {
+ T* tmp = b.ptr;
+ b.ptr = ptr;
+ ptr = tmp;
+ }
+
+ T* release() {
+ T* tmp = ptr;
+ ptr = 0;
+ return tmp;
+ }
+
+ private:
+ // no reason to use these: each scoped_ptr should have its own object
+ template <typename U>
+ bool operator==(scoped_ptr<U> const& p) const;
+ template <typename U>
+ bool operator!=(scoped_ptr<U> const& p) const;
+};
+
+template <typename T>
+inline void swap(scoped_ptr<T>& a, scoped_ptr<T>& b) {
+ a.swap(b);
+}
+
+template <typename T>
+inline bool operator==(T* p, const scoped_ptr<T>& b) {
+ return p == b.get();
+}
+
+template <typename T>
+inline bool operator!=(T* p, const scoped_ptr<T>& b) {
+ return p != b.get();
+}
+
+// scoped_array extends scoped_ptr to arrays. Deletion of the array pointed to
+// is guaranteed, either on destruction of the scoped_array or via an explicit
+// reset(). Use shared_array or std::vector if your needs are more complex.
+
+template <typename T>
+class scoped_array {
+ private:
+ T* ptr;
+
+ scoped_array(scoped_array const&);
+ scoped_array& operator=(scoped_array const&);
+
+ public:
+ typedef T element_type;
+
+ explicit scoped_array(T* p = 0) : ptr(p) {}
+
+ ~scoped_array() { delete[] ptr; }
+
+ void reset(T* p = 0) {
+ if (ptr != p) {
+ delete[] ptr;
+ ptr = p;
+ }
+ }
+
+ T& operator[](std::ptrdiff_t i) const {
+ MOZ_ASSERT(ptr != 0);
+ MOZ_ASSERT(i >= 0);
+ return ptr[i];
+ }
+
+ bool operator==(T* p) const { return ptr == p; }
+
+ bool operator!=(T* p) const { return ptr != p; }
+
+ T* get() const { return ptr; }
+
+ void swap(scoped_array& b) {
+ T* tmp = b.ptr;
+ b.ptr = ptr;
+ ptr = tmp;
+ }
+
+ T* release() {
+ T* tmp = ptr;
+ ptr = 0;
+ return tmp;
+ }
+
+ private:
+ // no reason to use these: each scoped_array should have its own object
+ template <typename U>
+ bool operator==(scoped_array<U> const& p) const;
+ template <typename U>
+ bool operator!=(scoped_array<U> const& p) const;
+};
+
+template <class T>
+inline void swap(scoped_array<T>& a, scoped_array<T>& b) {
+ a.swap(b);
+}
+
+template <typename T>
+inline bool operator==(T* p, const scoped_array<T>& b) {
+ return p == b.get();
+}
+
+template <typename T>
+inline bool operator!=(T* p, const scoped_array<T>& b) {
+ return p != b.get();
+}
+
+// This class wraps the c library function free() in a class that can be
+// passed as a template argument to scoped_ptr_malloc below.
+class ScopedPtrMallocFree {
+ public:
+ inline void operator()(void* x) const { free(x); }
+};
+
+// scoped_ptr_malloc<> is similar to scoped_ptr<>, but it accepts a
+// second template argument, the functor used to free the object.
+
+template <typename T, typename FreeProc = ScopedPtrMallocFree>
+class scoped_ptr_malloc {
+ private:
+ T* ptr;
+
+ scoped_ptr_malloc(scoped_ptr_malloc const&);
+ scoped_ptr_malloc& operator=(scoped_ptr_malloc const&);
+
+ public:
+ typedef T element_type;
+
+ explicit scoped_ptr_malloc(T* p = 0) : ptr(p) {}
+
+ ~scoped_ptr_malloc() { free_((void*)ptr); }
+
+ void reset(T* p = 0) {
+ if (ptr != p) {
+ free_((void*)ptr);
+ ptr = p;
+ }
+ }
+
+ T& operator*() const {
+ MOZ_ASSERT(ptr != 0);
+ return *ptr;
+ }
+
+ T* operator->() const {
+ MOZ_ASSERT(ptr != 0);
+ return ptr;
+ }
+
+ bool operator==(T* p) const { return ptr == p; }
+
+ bool operator!=(T* p) const { return ptr != p; }
+
+ T* get() const { return ptr; }
+
+ void swap(scoped_ptr_malloc& b) {
+ T* tmp = b.ptr;
+ b.ptr = ptr;
+ ptr = tmp;
+ }
+
+ T* release() {
+ T* tmp = ptr;
+ ptr = 0;
+ return tmp;
+ }
+
+ private:
+ // no reason to use these: each scoped_ptr_malloc should have its own object
+ template <typename U, typename GP>
+ bool operator==(scoped_ptr_malloc<U, GP> const& p) const;
+ template <typename U, typename GP>
+ bool operator!=(scoped_ptr_malloc<U, GP> const& p) const;
+
+ static FreeProc const free_;
+};
+
+template <typename T, typename FP>
+FP const scoped_ptr_malloc<T, FP>::free_ = FP();
+
+template <typename T, typename FP>
+inline void swap(scoped_ptr_malloc<T, FP>& a, scoped_ptr_malloc<T, FP>& b) {
+ a.swap(b);
+}
+
+template <typename T, typename FP>
+inline bool operator==(T* p, const scoped_ptr_malloc<T, FP>& b) {
+ return p == b.get();
+}
+
+template <typename T, typename FP>
+inline bool operator!=(T* p, const scoped_ptr_malloc<T, FP>& b) {
+ return p != b.get();
+}
+
+////////////////////////////////////////////////////////////////
+// Module
+//
+
+// A Module represents the contents of a module, and supports methods
+// for adding information produced by parsing STABS or DWARF data
+// --- possibly both from the same file --- and then writing out the
+// unified contents as a Breakpad-format symbol file.
+class Module {
+ public:
+ // The type of addresses and sizes in a symbol table.
+ typedef uint64_t Address;
+
+ // Representation of an expression. This can either be a postfix
+ // expression, in which case it is stored as a string, or a simple
+ // expression of the form (identifier + imm) or *(identifier + imm).
+ // It can also be invalid (denoting "no value").
+ enum ExprHow { kExprInvalid = 1, kExprPostfix, kExprSimple, kExprSimpleMem };
+
+ struct Expr {
+ // Construct a simple-form expression
+ Expr(const UniqueString* ident, long offset, bool deref) {
+ if (IsEmptyUniqueString(ident)) {
+ Expr();
+ } else {
+ postfix_ = "";
+ ident_ = ident;
+ offset_ = offset;
+ how_ = deref ? kExprSimpleMem : kExprSimple;
+ }
+ }
+
+ // Construct an invalid expression
+ Expr() {
+ postfix_ = "";
+ ident_ = nullptr;
+ offset_ = 0;
+ how_ = kExprInvalid;
+ }
+
+ // Return the postfix expression string, either directly,
+ // if this is a postfix expression, or by synthesising it
+ // for a simple expression.
+ std::string getExprPostfix() const {
+ switch (how_) {
+ case kExprPostfix:
+ return postfix_;
+ case kExprSimple:
+ case kExprSimpleMem: {
+ char buf[40];
+ sprintf(buf, " %ld %c%s", labs(offset_), offset_ < 0 ? '-' : '+',
+ how_ == kExprSimple ? "" : " ^");
+ return std::string(FromUniqueString(ident_)) + std::string(buf);
+ }
+ case kExprInvalid:
+ default:
+ MOZ_ASSERT(0 && "getExprPostfix: invalid Module::Expr type");
+ return "Expr::genExprPostfix: kExprInvalid";
+ }
+ }
+
+ // The identifier that gives the starting value for simple expressions.
+ const UniqueString* ident_;
+ // The offset to add for simple expressions.
+ long offset_;
+ // The Postfix expression string to evaluate for non-simple expressions.
+ std::string postfix_;
+ // The operation expressed by this expression.
+ ExprHow how_;
+ };
+
+ // A map from register names to expressions that recover
+ // their values. This can represent a complete set of rules to
+ // follow at some address, or a set of changes to be applied to an
+ // extant set of rules.
+ // NOTE! there are two completely different types called RuleMap. This
+ // is one of them.
+ typedef std::map<const UniqueString*, Expr> RuleMap;
+
+ // A map from addresses to RuleMaps, representing changes that take
+ // effect at given addresses.
+ typedef std::map<Address, RuleMap> RuleChangeMap;
+
+ // A range of 'STACK CFI' stack walking information. An instance of
+ // this structure corresponds to a 'STACK CFI INIT' record and the
+ // subsequent 'STACK CFI' records that fall within its range.
+ struct StackFrameEntry {
+ // The starting address and number of bytes of machine code this
+ // entry covers.
+ Address address, size;
+
+ // The initial register recovery rules, in force at the starting
+ // address.
+ RuleMap initial_rules;
+
+ // A map from addresses to rule changes. To find the rules in
+ // force at a given address, start with initial_rules, and then
+ // apply the changes given in this map for all addresses up to and
+ // including the address you're interested in.
+ RuleChangeMap rule_changes;
+ };
+
+ // Create a new module with the given name, operating system,
+ // architecture, and ID string.
+ Module(const std::string& name, const std::string& os,
+ const std::string& architecture, const std::string& id);
+ ~Module();
+
+ private:
+ // Module header entries.
+ std::string name_, os_, architecture_, id_;
+};
+
+} // namespace lul
+
+#endif // LulCommonExt_h
diff --git a/tools/profiler/lul/LulDwarf.cpp b/tools/profiler/lul/LulDwarf.cpp
new file mode 100644
index 0000000000..ea38ce50ea
--- /dev/null
+++ b/tools/profiler/lul/LulDwarf.cpp
@@ -0,0 +1,2538 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+
+// Copyright (c) 2010 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.
+
+// CFI reader author: Jim Blandy <jimb@mozilla.com> <jimb@red-bean.com>
+// Original author: Jim Blandy <jimb@mozilla.com> <jimb@red-bean.com>
+
+// Implementation of dwarf2reader::LineInfo, dwarf2reader::CompilationUnit,
+// and dwarf2reader::CallFrameInfo. See dwarf2reader.h for details.
+
+// This file is derived from the following files in
+// toolkit/crashreporter/google-breakpad:
+// src/common/dwarf/bytereader.cc
+// src/common/dwarf/dwarf2reader.cc
+// src/common/dwarf_cfi_to_module.cc
+
+#include <stdint.h>
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+
+#include <stack>
+#include <string>
+
+#include "mozilla/Assertions.h"
+#include "mozilla/Attributes.h"
+#include "mozilla/Sprintf.h"
+#include "mozilla/Vector.h"
+
+#include "LulCommonExt.h"
+#include "LulDwarfInt.h"
+
+// Set this to 1 for verbose logging
+#define DEBUG_DWARF 0
+
+namespace lul {
+
+using std::pair;
+using std::string;
+
+ByteReader::ByteReader(enum Endianness endian)
+ : offset_reader_(NULL),
+ address_reader_(NULL),
+ endian_(endian),
+ address_size_(0),
+ offset_size_(0),
+ have_section_base_(),
+ have_text_base_(),
+ have_data_base_(),
+ have_function_base_() {}
+
+ByteReader::~ByteReader() {}
+
+void ByteReader::SetOffsetSize(uint8 size) {
+ offset_size_ = size;
+ MOZ_ASSERT(size == 4 || size == 8);
+ if (size == 4) {
+ this->offset_reader_ = &ByteReader::ReadFourBytes;
+ } else {
+ this->offset_reader_ = &ByteReader::ReadEightBytes;
+ }
+}
+
+void ByteReader::SetAddressSize(uint8 size) {
+ address_size_ = size;
+ MOZ_ASSERT(size == 4 || size == 8);
+ if (size == 4) {
+ this->address_reader_ = &ByteReader::ReadFourBytes;
+ } else {
+ this->address_reader_ = &ByteReader::ReadEightBytes;
+ }
+}
+
+uint64 ByteReader::ReadInitialLength(const char* start, size_t* len) {
+ const uint64 initial_length = ReadFourBytes(start);
+ start += 4;
+
+ // In DWARF2/3, if the initial length is all 1 bits, then the offset
+ // size is 8 and we need to read the next 8 bytes for the real length.
+ if (initial_length == 0xffffffff) {
+ SetOffsetSize(8);
+ *len = 12;
+ return ReadOffset(start);
+ } else {
+ SetOffsetSize(4);
+ *len = 4;
+ }
+ return initial_length;
+}
+
+bool ByteReader::ValidEncoding(DwarfPointerEncoding encoding) const {
+ if (encoding == DW_EH_PE_omit) return true;
+ if (encoding == DW_EH_PE_aligned) return true;
+ if ((encoding & 0x7) > DW_EH_PE_udata8) return false;
+ if ((encoding & 0x70) > DW_EH_PE_funcrel) return false;
+ return true;
+}
+
+bool ByteReader::UsableEncoding(DwarfPointerEncoding encoding) const {
+ switch (encoding & 0x70) {
+ case DW_EH_PE_absptr:
+ return true;
+ case DW_EH_PE_pcrel:
+ return have_section_base_;
+ case DW_EH_PE_textrel:
+ return have_text_base_;
+ case DW_EH_PE_datarel:
+ return have_data_base_;
+ case DW_EH_PE_funcrel:
+ return have_function_base_;
+ default:
+ return false;
+ }
+}
+
+uint64 ByteReader::ReadEncodedPointer(const char* buffer,
+ DwarfPointerEncoding encoding,
+ size_t* len) const {
+ // UsableEncoding doesn't approve of DW_EH_PE_omit, so we shouldn't
+ // see it here.
+ MOZ_ASSERT(encoding != DW_EH_PE_omit);
+
+ // The Linux Standards Base 4.0 does not make this clear, but the
+ // GNU tools (gcc/unwind-pe.h; readelf/dwarf.c; gdb/dwarf2-frame.c)
+ // agree that aligned pointers are always absolute, machine-sized,
+ // machine-signed pointers.
+ if (encoding == DW_EH_PE_aligned) {
+ MOZ_ASSERT(have_section_base_);
+
+ // We don't need to align BUFFER in *our* address space. Rather, we
+ // need to find the next position in our buffer that would be aligned
+ // when the .eh_frame section the buffer contains is loaded into the
+ // program's memory. So align assuming that buffer_base_ gets loaded at
+ // address section_base_, where section_base_ itself may or may not be
+ // aligned.
+
+ // First, find the offset to START from the closest prior aligned
+ // address.
+ uint64 skew = section_base_ & (AddressSize() - 1);
+ // Now find the offset from that aligned address to buffer.
+ uint64 offset = skew + (buffer - buffer_base_);
+ // Round up to the next boundary.
+ uint64 aligned = (offset + AddressSize() - 1) & -AddressSize();
+ // Convert back to a pointer.
+ const char* aligned_buffer = buffer_base_ + (aligned - skew);
+ // Finally, store the length and actually fetch the pointer.
+ *len = aligned_buffer - buffer + AddressSize();
+ return ReadAddress(aligned_buffer);
+ }
+
+ // Extract the value first, ignoring whether it's a pointer or an
+ // offset relative to some base.
+ uint64 offset;
+ switch (encoding & 0x0f) {
+ case DW_EH_PE_absptr:
+ // DW_EH_PE_absptr is weird, as it is used as a meaningful value for
+ // both the high and low nybble of encoding bytes. When it appears in
+ // the high nybble, it means that the pointer is absolute, not an
+ // offset from some base address. When it appears in the low nybble,
+ // as here, it means that the pointer is stored as a normal
+ // machine-sized and machine-signed address. A low nybble of
+ // DW_EH_PE_absptr does not imply that the pointer is absolute; it is
+ // correct for us to treat the value as an offset from a base address
+ // if the upper nybble is not DW_EH_PE_absptr.
+ offset = ReadAddress(buffer);
+ *len = AddressSize();
+ break;
+
+ case DW_EH_PE_uleb128:
+ offset = ReadUnsignedLEB128(buffer, len);
+ break;
+
+ case DW_EH_PE_udata2:
+ offset = ReadTwoBytes(buffer);
+ *len = 2;
+ break;
+
+ case DW_EH_PE_udata4:
+ offset = ReadFourBytes(buffer);
+ *len = 4;
+ break;
+
+ case DW_EH_PE_udata8:
+ offset = ReadEightBytes(buffer);
+ *len = 8;
+ break;
+
+ case DW_EH_PE_sleb128:
+ offset = ReadSignedLEB128(buffer, len);
+ break;
+
+ case DW_EH_PE_sdata2:
+ offset = ReadTwoBytes(buffer);
+ // Sign-extend from 16 bits.
+ offset = (offset ^ 0x8000) - 0x8000;
+ *len = 2;
+ break;
+
+ case DW_EH_PE_sdata4:
+ offset = ReadFourBytes(buffer);
+ // Sign-extend from 32 bits.
+ offset = (offset ^ 0x80000000ULL) - 0x80000000ULL;
+ *len = 4;
+ break;
+
+ case DW_EH_PE_sdata8:
+ // No need to sign-extend; this is the full width of our type.
+ offset = ReadEightBytes(buffer);
+ *len = 8;
+ break;
+
+ default:
+ abort();
+ }
+
+ // Find the appropriate base address.
+ uint64 base;
+ switch (encoding & 0x70) {
+ case DW_EH_PE_absptr:
+ base = 0;
+ break;
+
+ case DW_EH_PE_pcrel:
+ MOZ_ASSERT(have_section_base_);
+ base = section_base_ + (buffer - buffer_base_);
+ break;
+
+ case DW_EH_PE_textrel:
+ MOZ_ASSERT(have_text_base_);
+ base = text_base_;
+ break;
+
+ case DW_EH_PE_datarel:
+ MOZ_ASSERT(have_data_base_);
+ base = data_base_;
+ break;
+
+ case DW_EH_PE_funcrel:
+ MOZ_ASSERT(have_function_base_);
+ base = function_base_;
+ break;
+
+ default:
+ abort();
+ }
+
+ uint64 pointer = base + offset;
+
+ // Remove inappropriate upper bits.
+ if (AddressSize() == 4)
+ pointer = pointer & 0xffffffff;
+ else
+ MOZ_ASSERT(AddressSize() == sizeof(uint64));
+
+ return pointer;
+}
+
+// A DWARF rule for recovering the address or value of a register, or
+// computing the canonical frame address. This is an 8-way sum-of-products
+// type. Excluding the INVALID variant, there is one subclass of this for
+// each '*Rule' member function in CallFrameInfo::Handler.
+//
+// This could logically be nested within State, but then the qualified names
+// get horrendous.
+
+class CallFrameInfo::Rule final {
+ public:
+ enum Tag {
+ INVALID,
+ Undefined,
+ SameValue,
+ Offset,
+ ValOffset,
+ Register,
+ Expression,
+ ValExpression
+ };
+
+ private:
+ // tag_ (below) indicates the form of the expression. There are 7 forms
+ // plus INVALID. All non-INVALID expressions denote a machine-word-sized
+ // value at unwind time. The description below assumes the presence of, at
+ // unwind time:
+ //
+ // * a function R, which takes a Dwarf register number and returns its value
+ // in the callee frame (the one we are unwinding out of).
+ //
+ // * a function EvalDwarfExpr, which evaluates a Dwarf expression.
+ //
+ // Register numbers are encoded using the target ABI's Dwarf
+ // register-numbering conventions. Except where otherwise noted, a register
+ // value may also be the special value CallFrameInfo::Handler::kCFARegister
+ // ("the CFA").
+ //
+ // The expression forms are represented using tag_, word1_ and word2_. The
+ // forms and denoted values are as follows:
+ //
+ // * INVALID: not a valid expression.
+ // valid fields: (none)
+ // denotes: no value
+ //
+ // * Undefined: denotes no value. This is used for a register whose value
+ // cannot be recovered.
+ // valid fields: (none)
+ // denotes: no value
+ //
+ // * SameValue: the register's value is the same as in the callee.
+ // valid fields: (none)
+ // denotes: R(the register that this Rule is associated with,
+ // not stored here)
+ //
+ // * Offset: the register's value is in memory at word2_ bytes away from
+ // Dwarf register number word1_. word2_ is interpreted as a *signed*
+ // offset.
+ // valid fields: word1_=DwarfReg, word2=Offset
+ // denotes: *(R(word1_) + word2_)
+ //
+ // * ValOffset: same as Offset, without the dereference.
+ // valid fields: word1_=DwarfReg, word2=Offset
+ // denotes: R(word1_) + word2_
+ //
+ // * Register: the register's value is in some other register,
+ // which may not be the CFA.
+ // valid fields: word1_=DwarfReg
+ // denotes: R(word1_)
+ //
+ // * Expression: the register's value is in memory at a location that can be
+ // computed from the Dwarf expression contained in the word2_ bytes
+ // starting at word1_. Note these locations are into the area of the .so
+ // temporarily mmaped info for debuginfo reading and have no validity once
+ // debuginfo reading has finished.
+ // valid fields: ExprStart=word1_, ExprLen=word2_
+ // denotes: *(EvalDwarfExpr(word1_, word2_))
+ //
+ // * ValExpression: same as Expression, without the dereference.
+ // valid fields: ExprStart=word1_, ExprLen=word2_
+ // denotes: EvalDwarfExpr(word1_, word2_)
+ //
+
+ // 3 words (or less) for representation. Unused word1_/word2_ fields must
+ // be set to zero.
+ Tag tag_;
+ uintptr_t word1_;
+ uintptr_t word2_;
+
+ // To ensure that word1_ can hold a pointer to an expression string.
+ static_assert(sizeof(const char*) <= sizeof(word1_));
+ // To ensure that word2_ can hold any string length or memory offset.
+ static_assert(sizeof(size_t) <= sizeof(word2_));
+
+ // This class denotes an 8-way sum-of-product type, and accessing invalid
+ // fields is meaningless. The accessors and constructors below enforce
+ // that.
+ bool isCanonical() const {
+ switch (tag_) {
+ case Tag::INVALID:
+ case Tag::Undefined:
+ case Tag::SameValue:
+ return word1_ == 0 && word2_ == 0;
+ case Tag::Offset:
+ case Tag::ValOffset:
+ return true;
+ case Tag::Register:
+ return word2_ == 0;
+ case Tag::Expression:
+ case Tag::ValExpression:
+ return true;
+ default:
+ MOZ_CRASH();
+ }
+ }
+
+ public:
+ Tag tag() const { return tag_; }
+ int dwreg() const {
+ switch (tag_) {
+ case Tag::Offset:
+ case Tag::ValOffset:
+ case Tag::Register:
+ return (int)word1_;
+ default:
+ MOZ_CRASH();
+ }
+ }
+ intptr_t offset() const {
+ switch (tag_) {
+ case Tag::Offset:
+ case Tag::ValOffset:
+ return (intptr_t)word2_;
+ default:
+ MOZ_CRASH();
+ }
+ }
+ ImageSlice expr() const {
+ switch (tag_) {
+ case Tag::Expression:
+ case Tag::ValExpression:
+ return ImageSlice((const char*)word1_, (size_t)word2_);
+ default:
+ MOZ_CRASH();
+ }
+ }
+
+ // Constructor-y stuff
+ Rule() {
+ tag_ = Tag::INVALID;
+ word1_ = 0;
+ word2_ = 0;
+ }
+
+ static Rule mkINVALID() {
+ Rule r; // is initialised by Rule()
+ return r;
+ }
+ static Rule mkUndefinedRule() {
+ Rule r;
+ r.tag_ = Tag::Undefined;
+ r.word1_ = 0;
+ r.word2_ = 0;
+ return r;
+ }
+ static Rule mkSameValueRule() {
+ Rule r;
+ r.tag_ = Tag::SameValue;
+ r.word1_ = 0;
+ r.word2_ = 0;
+ return r;
+ }
+ static Rule mkOffsetRule(int dwreg, intptr_t offset) {
+ Rule r;
+ r.tag_ = Tag::Offset;
+ r.word1_ = (uintptr_t)dwreg;
+ r.word2_ = (uintptr_t)offset;
+ return r;
+ }
+ static Rule mkValOffsetRule(int dwreg, intptr_t offset) {
+ Rule r;
+ r.tag_ = Tag::ValOffset;
+ r.word1_ = (uintptr_t)dwreg;
+ r.word2_ = (uintptr_t)offset;
+ return r;
+ }
+ static Rule mkRegisterRule(int dwreg) {
+ Rule r;
+ r.tag_ = Tag::Register;
+ r.word1_ = (uintptr_t)dwreg;
+ r.word2_ = 0;
+ return r;
+ }
+ static Rule mkExpressionRule(ImageSlice expr) {
+ Rule r;
+ r.tag_ = Tag::Expression;
+ r.word1_ = (uintptr_t)expr.start_;
+ r.word2_ = (uintptr_t)expr.length_;
+ return r;
+ }
+ static Rule mkValExpressionRule(ImageSlice expr) {
+ Rule r;
+ r.tag_ = Tag::ValExpression;
+ r.word1_ = (uintptr_t)expr.start_;
+ r.word2_ = (uintptr_t)expr.length_;
+ return r;
+ }
+
+ // Misc
+ inline bool isVALID() const { return tag_ != Tag::INVALID; }
+
+ bool operator==(const Rule& rhs) const {
+ MOZ_ASSERT(isVALID() && rhs.isVALID());
+ MOZ_ASSERT(isCanonical());
+ MOZ_ASSERT(rhs.isCanonical());
+ if (tag_ != rhs.tag_) {
+ return false;
+ }
+ switch (tag_) {
+ case Tag::INVALID:
+ MOZ_CRASH();
+ case Tag::Undefined:
+ case Tag::SameValue:
+ return true;
+ case Tag::Offset:
+ case Tag::ValOffset:
+ return word1_ == rhs.word1_ && word2_ == rhs.word2_;
+ case Tag::Register:
+ return word1_ == rhs.word1_;
+ case Tag::Expression:
+ case Tag::ValExpression:
+ return expr() == rhs.expr();
+ default:
+ MOZ_CRASH();
+ }
+ }
+
+ bool operator!=(const Rule& rhs) const { return !(*this == rhs); }
+
+ // Tell HANDLER that, at ADDRESS in the program, REG can be
+ // recovered using this rule. If REG is kCFARegister, then this rule
+ // describes how to compute the canonical frame address. Return what the
+ // HANDLER member function returned.
+ bool Handle(Handler* handler, uint64 address, int reg) const {
+ MOZ_ASSERT(isVALID());
+ MOZ_ASSERT(isCanonical());
+ switch (tag_) {
+ case Tag::Undefined:
+ return handler->UndefinedRule(address, reg);
+ case Tag::SameValue:
+ return handler->SameValueRule(address, reg);
+ case Tag::Offset:
+ return handler->OffsetRule(address, reg, word1_, word2_);
+ case Tag::ValOffset:
+ return handler->ValOffsetRule(address, reg, word1_, word2_);
+ case Tag::Register:
+ return handler->RegisterRule(address, reg, word1_);
+ case Tag::Expression:
+ return handler->ExpressionRule(
+ address, reg, ImageSlice((const char*)word1_, (size_t)word2_));
+ case Tag::ValExpression:
+ return handler->ValExpressionRule(
+ address, reg, ImageSlice((const char*)word1_, (size_t)word2_));
+ default:
+ MOZ_CRASH();
+ }
+ }
+
+ void SetBaseRegister(unsigned reg) {
+ MOZ_ASSERT(isVALID());
+ MOZ_ASSERT(isCanonical());
+ switch (tag_) {
+ case Tag::ValOffset:
+ word1_ = reg;
+ break;
+ case Tag::Offset:
+ // We don't actually need SetBaseRegister or SetOffset here, since they
+ // are only ever applied to CFA rules, for DW_CFA_def_cfa_offset, and it
+ // doesn't make sense to use OffsetRule for computing the CFA: it
+ // computes the address at which a register is saved, not a value.
+ // (fallthrough)
+ case Tag::Undefined:
+ case Tag::SameValue:
+ case Tag::Register:
+ case Tag::Expression:
+ case Tag::ValExpression:
+ // Do nothing
+ break;
+ default:
+ MOZ_CRASH();
+ }
+ }
+
+ void SetOffset(long long offset) {
+ MOZ_ASSERT(isVALID());
+ MOZ_ASSERT(isCanonical());
+ switch (tag_) {
+ case Tag::ValOffset:
+ word2_ = offset;
+ break;
+ case Tag::Offset:
+ // Same comment as in SetBaseRegister applies
+ // (fallthrough)
+ case Tag::Undefined:
+ case Tag::SameValue:
+ case Tag::Register:
+ case Tag::Expression:
+ case Tag::ValExpression:
+ // Do nothing
+ break;
+ default:
+ MOZ_CRASH();
+ }
+ }
+
+ // For debugging only
+ string show() const {
+ char buf[100];
+ string s = "";
+ switch (tag_) {
+ case Tag::INVALID:
+ s = "INVALID";
+ break;
+ case Tag::Undefined:
+ s = "Undefined";
+ break;
+ case Tag::SameValue:
+ s = "SameValue";
+ break;
+ case Tag::Offset:
+ s = "Offset{..}";
+ break;
+ case Tag::ValOffset:
+ sprintf(buf, "ValOffset{reg=%d offs=%lld}", (int)word1_,
+ (long long int)word2_);
+ s = string(buf);
+ break;
+ case Tag::Register:
+ s = "Register{..}";
+ break;
+ case Tag::Expression:
+ s = "Expression{..}";
+ break;
+ case Tag::ValExpression:
+ s = "ValExpression{..}";
+ break;
+ default:
+ MOZ_CRASH();
+ }
+ return s;
+ }
+};
+
+// `RuleMapLowLevel` is a simple class that maps from `int` (register numbers)
+// to `Rule`. This is implemented as a vector of `<int, Rule>` pairs, with a
+// 12-element inline capacity. From a big-O perspective this is obviously a
+// terrible way to implement an associative map. This workload is however
+// quite special in that the maximum number of elements is normally 7 (on
+// x86_64-linux), and so this implementation is much faster than one based on
+// std::map with its attendant R-B-tree node allocation and balancing
+// overheads.
+//
+// An iterator that enumerates the mapping in increasing order of the `int`
+// keys is provided. This ordered iteration facility is required by
+// CallFrameInfo::RuleMap::HandleTransitionTo, which needs to iterate through
+// two such maps simultaneously and in-order so as to compare them.
+
+// All `Rule`s in the map must satisfy `isVALID()`. That conveniently means
+// that `Rule::mkINVALID()` can be used to indicate "not found` in `get()`.
+
+class CallFrameInfo::RuleMapLowLevel {
+ using Entry = pair<int, Rule>;
+
+ // The inline capacity of 12 is carefully chosen. It would be wise to make
+ // careful measurements of time, instruction count, allocation count and
+ // allocated bytes before changing it. For x86_64-linux, a value of 8 is
+ // marginally better; using 12 increases the total heap bytes allocated by
+ // around 20%. For arm64-linux, a value of 24 is better; using 12 increases
+ // the total blocks allocated by around 20%. But it's a not bad tradeoff
+ // for both targets, and in any case is vastly superior to the previous
+ // scheme of using `std::map`.
+ mozilla::Vector<Entry, 12> entries_;
+
+ public:
+ void clear() { entries_.clear(); }
+
+ RuleMapLowLevel() { clear(); }
+
+ RuleMapLowLevel& operator=(const RuleMapLowLevel& rhs) {
+ entries_.clear();
+ for (size_t i = 0; i < rhs.entries_.length(); i++) {
+ bool ok = entries_.append(rhs.entries_[i]);
+ MOZ_RELEASE_ASSERT(ok);
+ }
+ return *this;
+ }
+
+ void set(int reg, Rule rule) {
+ MOZ_ASSERT(rule.isVALID());
+ // Find the place where it should go, if any
+ size_t i = 0;
+ size_t nEnt = entries_.length();
+ while (i < nEnt && entries_[i].first < reg) {
+ i++;
+ }
+ if (i == nEnt) {
+ // No entry exists, and all the existing ones are for lower register
+ // numbers. So just add it at the end.
+ bool ok = entries_.append(Entry(reg, rule));
+ MOZ_RELEASE_ASSERT(ok);
+ } else {
+ // It needs to live at location `i`, and ..
+ MOZ_ASSERT(i < nEnt);
+ if (entries_[i].first == reg) {
+ // .. there's already an old entry, so just update it.
+ entries_[i].second = rule;
+ } else {
+ // .. there's no previous entry, so shift `i` and all those following
+ // it one place to the right, and put the new entry at `i`. Doing it
+ // manually is measurably cheaper than using `Vector::insert`.
+ MOZ_ASSERT(entries_[i].first > reg);
+ bool ok = entries_.append(Entry(999999, Rule::mkINVALID()));
+ MOZ_RELEASE_ASSERT(ok);
+ for (size_t j = nEnt; j >= i + 1; j--) {
+ entries_[j] = entries_[j - 1];
+ }
+ entries_[i] = Entry(reg, rule);
+ }
+ }
+ // Check in-order-ness and validity.
+ for (size_t i = 0; i < entries_.length(); i++) {
+ MOZ_ASSERT(entries_[i].second.isVALID());
+ MOZ_ASSERT_IF(i > 0, entries_[i - 1].first < entries_[i].first);
+ }
+ MOZ_ASSERT(get(reg).isVALID());
+ }
+
+ // Find the entry for `reg`, or return `Rule::mkINVALID()` if not found.
+ Rule get(int reg) const {
+ size_t nEnt = entries_.length();
+ // "early exit" in the case where `entries_[i].first > reg` was tested on
+ // x86_64 and found to be slightly slower than just testing all entries,
+ // presumably because the reduced amount of searching was not offset by
+ // the cost of an extra test per iteration.
+ for (size_t i = 0; i < nEnt; i++) {
+ if (entries_[i].first == reg) {
+ CallFrameInfo::Rule ret = entries_[i].second;
+ MOZ_ASSERT(ret.isVALID());
+ return ret;
+ }
+ }
+ return CallFrameInfo::Rule::mkINVALID();
+ }
+
+ // A very simple in-order iteration facility.
+ class Iter {
+ const RuleMapLowLevel* rmll_;
+ size_t nextIx_;
+
+ public:
+ explicit Iter(const RuleMapLowLevel* rmll) : rmll_(rmll), nextIx_(0) {}
+ bool avail() const { return nextIx_ < rmll_->entries_.length(); }
+ bool finished() const { return !avail(); }
+ // Move the iterator to the next entry.
+ void step() {
+ MOZ_RELEASE_ASSERT(nextIx_ < rmll_->entries_.length());
+ nextIx_++;
+ }
+ // Get the value at the current iteration point, but don't advance to the
+ // next entry.
+ pair<int, Rule> peek() {
+ MOZ_RELEASE_ASSERT(nextIx_ < rmll_->entries_.length());
+ return rmll_->entries_[nextIx_];
+ }
+ };
+};
+
+// A map from register numbers to rules. This is a wrapper around
+// `RuleMapLowLevel`, with added logic for dealing with the "special" CFA
+// rule, and with `HandleTransitionTo`, which effectively computes the
+// difference between two `RuleMaps`.
+
+class CallFrameInfo::RuleMap {
+ public:
+ RuleMap() : cfa_rule_(Rule::mkINVALID()) {}
+ RuleMap(const RuleMap& rhs) : cfa_rule_(Rule::mkINVALID()) { *this = rhs; }
+ ~RuleMap() { Clear(); }
+
+ RuleMap& operator=(const RuleMap& rhs);
+
+ // Set the rule for computing the CFA to RULE.
+ void SetCFARule(Rule rule) { cfa_rule_ = rule; }
+
+ // Return the current CFA rule. Be careful not to modify it -- it's returned
+ // by value. If you want to modify the CFA rule, use CFARuleRef() instead.
+ // We use these two for DW_CFA_def_cfa_offset and DW_CFA_def_cfa_register,
+ // and for detecting references to the CFA before a rule for it has been
+ // established.
+ Rule CFARule() const { return cfa_rule_; }
+ Rule* CFARuleRef() { return &cfa_rule_; }
+
+ // Return the rule for REG, or the INVALID rule if there is none.
+ Rule RegisterRule(int reg) const;
+
+ // Set the rule for computing REG to RULE.
+ void SetRegisterRule(int reg, Rule rule);
+
+ // Make all the appropriate calls to HANDLER as if we were changing from
+ // this RuleMap to NEW_RULES at ADDRESS. We use this to implement
+ // DW_CFA_restore_state, where lots of rules can change simultaneously.
+ // Return true if all handlers returned true; otherwise, return false.
+ bool HandleTransitionTo(Handler* handler, uint64 address,
+ const RuleMap& new_rules) const;
+
+ private:
+ // Remove all register rules and clear cfa_rule_.
+ void Clear();
+
+ // The rule for computing the canonical frame address.
+ Rule cfa_rule_;
+
+ // A map from register numbers to postfix expressions to recover
+ // their values.
+ RuleMapLowLevel registers_;
+};
+
+CallFrameInfo::RuleMap& CallFrameInfo::RuleMap::operator=(const RuleMap& rhs) {
+ Clear();
+ if (rhs.cfa_rule_.isVALID()) cfa_rule_ = rhs.cfa_rule_;
+ registers_ = rhs.registers_;
+ return *this;
+}
+
+CallFrameInfo::Rule CallFrameInfo::RuleMap::RegisterRule(int reg) const {
+ MOZ_ASSERT(reg != Handler::kCFARegister);
+ return registers_.get(reg);
+}
+
+void CallFrameInfo::RuleMap::SetRegisterRule(int reg, Rule rule) {
+ MOZ_ASSERT(reg != Handler::kCFARegister);
+ MOZ_ASSERT(rule.isVALID());
+ registers_.set(reg, rule);
+}
+
+bool CallFrameInfo::RuleMap::HandleTransitionTo(
+ Handler* handler, uint64 address, const RuleMap& new_rules) const {
+ // Transition from cfa_rule_ to new_rules.cfa_rule_.
+ if (cfa_rule_.isVALID() && new_rules.cfa_rule_.isVALID()) {
+ if (cfa_rule_ != new_rules.cfa_rule_ &&
+ !new_rules.cfa_rule_.Handle(handler, address, Handler::kCFARegister)) {
+ return false;
+ }
+ } else if (cfa_rule_.isVALID()) {
+ // this RuleMap has a CFA rule but new_rules doesn't.
+ // CallFrameInfo::Handler has no way to handle this --- and shouldn't;
+ // it's garbage input. The instruction interpreter should have
+ // detected this and warned, so take no action here.
+ } else if (new_rules.cfa_rule_.isVALID()) {
+ // This shouldn't be possible: NEW_RULES is some prior state, and
+ // there's no way to remove entries.
+ MOZ_ASSERT(0);
+ } else {
+ // Both CFA rules are empty. No action needed.
+ }
+
+ // Traverse the two maps in order by register number, and report
+ // whatever differences we find.
+ RuleMapLowLevel::Iter old_it(&registers_);
+ RuleMapLowLevel::Iter new_it(&new_rules.registers_);
+ while (!old_it.finished() && !new_it.finished()) {
+ pair<int, Rule> old_pair = old_it.peek();
+ pair<int, Rule> new_pair = new_it.peek();
+ if (old_pair.first < new_pair.first) {
+ // This RuleMap has an entry for old.first, but NEW_RULES doesn't.
+ //
+ // This isn't really the right thing to do, but since CFI generally
+ // only mentions callee-saves registers, and GCC's convention for
+ // callee-saves registers is that they are unchanged, it's a good
+ // approximation.
+ if (!handler->SameValueRule(address, old_pair.first)) {
+ return false;
+ }
+ old_it.step();
+ } else if (old_pair.first > new_pair.first) {
+ // NEW_RULES has an entry for new_pair.first, but this RuleMap
+ // doesn't. This shouldn't be possible: NEW_RULES is some prior
+ // state, and there's no way to remove entries.
+ MOZ_ASSERT(0);
+ } else {
+ // Both maps have an entry for this register. Report the new
+ // rule if it is different.
+ if (old_pair.second != new_pair.second &&
+ !new_pair.second.Handle(handler, address, new_pair.first)) {
+ return false;
+ }
+ new_it.step();
+ old_it.step();
+ }
+ }
+ // Finish off entries from this RuleMap with no counterparts in new_rules.
+ while (!old_it.finished()) {
+ pair<int, Rule> old_pair = old_it.peek();
+ if (!handler->SameValueRule(address, old_pair.first)) return false;
+ old_it.step();
+ }
+ // Since we only make transitions from a rule set to some previously
+ // saved rule set, and we can only add rules to the map, NEW_RULES
+ // must have fewer rules than *this.
+ MOZ_ASSERT(new_it.finished());
+
+ return true;
+}
+
+// Remove all register rules and clear cfa_rule_.
+void CallFrameInfo::RuleMap::Clear() {
+ cfa_rule_ = Rule::mkINVALID();
+ registers_.clear();
+}
+
+// The state of the call frame information interpreter as it processes
+// instructions from a CIE and FDE.
+class CallFrameInfo::State {
+ public:
+ // Create a call frame information interpreter state with the given
+ // reporter, reader, handler, and initial call frame info address.
+ State(ByteReader* reader, Handler* handler, Reporter* reporter,
+ uint64 address)
+ : reader_(reader),
+ handler_(handler),
+ reporter_(reporter),
+ address_(address),
+ entry_(NULL),
+ cursor_(NULL),
+ saved_rules_(NULL) {}
+
+ ~State() {
+ if (saved_rules_) delete saved_rules_;
+ }
+
+ // Interpret instructions from CIE, save the resulting rule set for
+ // DW_CFA_restore instructions, and return true. On error, report
+ // the problem to reporter_ and return false.
+ bool InterpretCIE(const CIE& cie);
+
+ // Interpret instructions from FDE, and return true. On error,
+ // report the problem to reporter_ and return false.
+ bool InterpretFDE(const FDE& fde);
+
+ private:
+ // The operands of a CFI instruction, for ParseOperands.
+ struct Operands {
+ unsigned register_number; // A register number.
+ uint64 offset; // An offset or address.
+ long signed_offset; // A signed offset.
+ ImageSlice expression; // A DWARF expression.
+ };
+
+ // Parse CFI instruction operands from STATE's instruction stream as
+ // described by FORMAT. On success, populate OPERANDS with the
+ // results, and return true. On failure, report the problem and
+ // return false.
+ //
+ // Each character of FORMAT should be one of the following:
+ //
+ // 'r' unsigned LEB128 register number (OPERANDS->register_number)
+ // 'o' unsigned LEB128 offset (OPERANDS->offset)
+ // 's' signed LEB128 offset (OPERANDS->signed_offset)
+ // 'a' machine-size address (OPERANDS->offset)
+ // (If the CIE has a 'z' augmentation string, 'a' uses the
+ // encoding specified by the 'R' argument.)
+ // '1' a one-byte offset (OPERANDS->offset)
+ // '2' a two-byte offset (OPERANDS->offset)
+ // '4' a four-byte offset (OPERANDS->offset)
+ // '8' an eight-byte offset (OPERANDS->offset)
+ // 'e' a DW_FORM_block holding a (OPERANDS->expression)
+ // DWARF expression
+ bool ParseOperands(const char* format, Operands* operands);
+
+ // Interpret one CFI instruction from STATE's instruction stream, update
+ // STATE, report any rule changes to handler_, and return true. On
+ // failure, report the problem and return false.
+ MOZ_ALWAYS_INLINE bool DoInstruction();
+
+ // Repeatedly call `DoInstruction`, until either:
+ // * it returns `false`, which indicates some kind of failure,
+ // in which case return `false` from here too, or
+ // * we've run out of instructions (that is, `cursor_ >= entry_->end`),
+ // in which case return `true`.
+ // This is marked as never-inline because it is the only place that
+ // `DoInstruction` is called from, and we want to maximise the chances that
+ // `DoInstruction` is inlined into this routine.
+ MOZ_NEVER_INLINE bool DoInstructions();
+
+ // The following Do* member functions are subroutines of DoInstruction,
+ // factoring out the actual work of operations that have several
+ // different encodings.
+
+ // Set the CFA rule to be the value of BASE_REGISTER plus OFFSET, and
+ // return true. On failure, report and return false. (Used for
+ // DW_CFA_def_cfa and DW_CFA_def_cfa_sf.)
+ bool DoDefCFA(unsigned base_register, long offset);
+
+ // Change the offset of the CFA rule to OFFSET, and return true. On
+ // failure, report and return false. (Subroutine for
+ // DW_CFA_def_cfa_offset and DW_CFA_def_cfa_offset_sf.)
+ bool DoDefCFAOffset(long offset);
+
+ // Specify that REG can be recovered using RULE, and return true. On
+ // failure, report and return false.
+ bool DoRule(unsigned reg, Rule rule);
+
+ // Specify that REG can be found at OFFSET from the CFA, and return true.
+ // On failure, report and return false. (Subroutine for DW_CFA_offset,
+ // DW_CFA_offset_extended, and DW_CFA_offset_extended_sf.)
+ bool DoOffset(unsigned reg, long offset);
+
+ // Specify that the caller's value for REG is the CFA plus OFFSET,
+ // and return true. On failure, report and return false. (Subroutine
+ // for DW_CFA_val_offset and DW_CFA_val_offset_sf.)
+ bool DoValOffset(unsigned reg, long offset);
+
+ // Restore REG to the rule established in the CIE, and return true. On
+ // failure, report and return false. (Subroutine for DW_CFA_restore and
+ // DW_CFA_restore_extended.)
+ bool DoRestore(unsigned reg);
+
+ // Return the section offset of the instruction at cursor. For use
+ // in error messages.
+ uint64 CursorOffset() { return entry_->offset + (cursor_ - entry_->start); }
+
+ // Report that entry_ is incomplete, and return false. For brevity.
+ bool ReportIncomplete() {
+ reporter_->Incomplete(entry_->offset, entry_->kind);
+ return false;
+ }
+
+ // For reading multi-byte values with the appropriate endianness.
+ ByteReader* reader_;
+
+ // The handler to which we should report the data we find.
+ Handler* handler_;
+
+ // For reporting problems in the info we're parsing.
+ Reporter* reporter_;
+
+ // The code address to which the next instruction in the stream applies.
+ uint64 address_;
+
+ // The entry whose instructions we are currently processing. This is
+ // first a CIE, and then an FDE.
+ const Entry* entry_;
+
+ // The next instruction to process.
+ const char* cursor_;
+
+ // The current set of rules.
+ RuleMap rules_;
+
+ // The set of rules established by the CIE, used by DW_CFA_restore
+ // and DW_CFA_restore_extended. We set this after interpreting the
+ // CIE's instructions.
+ RuleMap cie_rules_;
+
+ // A stack of saved states, for DW_CFA_remember_state and
+ // DW_CFA_restore_state.
+ std::stack<RuleMap>* saved_rules_;
+};
+
+bool CallFrameInfo::State::InterpretCIE(const CIE& cie) {
+ entry_ = &cie;
+ cursor_ = entry_->instructions;
+ if (!DoInstructions()) {
+ return false;
+ }
+ // Note the rules established by the CIE, for use by DW_CFA_restore
+ // and DW_CFA_restore_extended.
+ cie_rules_ = rules_;
+ return true;
+}
+
+bool CallFrameInfo::State::InterpretFDE(const FDE& fde) {
+ entry_ = &fde;
+ cursor_ = entry_->instructions;
+ return DoInstructions();
+}
+
+bool CallFrameInfo::State::ParseOperands(const char* format,
+ Operands* operands) {
+ size_t len;
+ const char* operand;
+
+ for (operand = format; *operand; operand++) {
+ size_t bytes_left = entry_->end - cursor_;
+ switch (*operand) {
+ case 'r':
+ operands->register_number = reader_->ReadUnsignedLEB128(cursor_, &len);
+ if (len > bytes_left) return ReportIncomplete();
+ cursor_ += len;
+ break;
+
+ case 'o':
+ operands->offset = reader_->ReadUnsignedLEB128(cursor_, &len);
+ if (len > bytes_left) return ReportIncomplete();
+ cursor_ += len;
+ break;
+
+ case 's':
+ operands->signed_offset = reader_->ReadSignedLEB128(cursor_, &len);
+ if (len > bytes_left) return ReportIncomplete();
+ cursor_ += len;
+ break;
+
+ case 'a':
+ operands->offset = reader_->ReadEncodedPointer(
+ cursor_, entry_->cie->pointer_encoding, &len);
+ if (len > bytes_left) return ReportIncomplete();
+ cursor_ += len;
+ break;
+
+ case '1':
+ if (1 > bytes_left) return ReportIncomplete();
+ operands->offset = static_cast<unsigned char>(*cursor_++);
+ break;
+
+ case '2':
+ if (2 > bytes_left) return ReportIncomplete();
+ operands->offset = reader_->ReadTwoBytes(cursor_);
+ cursor_ += 2;
+ break;
+
+ case '4':
+ if (4 > bytes_left) return ReportIncomplete();
+ operands->offset = reader_->ReadFourBytes(cursor_);
+ cursor_ += 4;
+ break;
+
+ case '8':
+ if (8 > bytes_left) return ReportIncomplete();
+ operands->offset = reader_->ReadEightBytes(cursor_);
+ cursor_ += 8;
+ break;
+
+ case 'e': {
+ size_t expression_length = reader_->ReadUnsignedLEB128(cursor_, &len);
+ if (len > bytes_left || expression_length > bytes_left - len)
+ return ReportIncomplete();
+ cursor_ += len;
+ operands->expression = ImageSlice(cursor_, expression_length);
+ cursor_ += expression_length;
+ break;
+ }
+
+ default:
+ MOZ_ASSERT(0);
+ }
+ }
+
+ return true;
+}
+
+MOZ_ALWAYS_INLINE
+bool CallFrameInfo::State::DoInstruction() {
+ CIE* cie = entry_->cie;
+ Operands ops;
+
+ // Our entry's kind should have been set by now.
+ MOZ_ASSERT(entry_->kind != kUnknown);
+
+ // We shouldn't have been invoked unless there were more
+ // instructions to parse.
+ MOZ_ASSERT(cursor_ < entry_->end);
+
+ unsigned opcode = *cursor_++;
+ if ((opcode & 0xc0) != 0) {
+ switch (opcode & 0xc0) {
+ // Advance the address.
+ case DW_CFA_advance_loc: {
+ size_t code_offset = opcode & 0x3f;
+ address_ += code_offset * cie->code_alignment_factor;
+ break;
+ }
+
+ // Find a register at an offset from the CFA.
+ case DW_CFA_offset:
+ if (!ParseOperands("o", &ops) ||
+ !DoOffset(opcode & 0x3f, ops.offset * cie->data_alignment_factor))
+ return false;
+ break;
+
+ // Restore the rule established for a register by the CIE.
+ case DW_CFA_restore:
+ if (!DoRestore(opcode & 0x3f)) return false;
+ break;
+
+ // The 'if' above should have excluded this possibility.
+ default:
+ MOZ_ASSERT(0);
+ }
+
+ // Return here, so the big switch below won't be indented.
+ return true;
+ }
+
+ switch (opcode) {
+ // Set the address.
+ case DW_CFA_set_loc:
+ if (!ParseOperands("a", &ops)) return false;
+ address_ = ops.offset;
+ break;
+
+ // Advance the address.
+ case DW_CFA_advance_loc1:
+ if (!ParseOperands("1", &ops)) return false;
+ address_ += ops.offset * cie->code_alignment_factor;
+ break;
+
+ // Advance the address.
+ case DW_CFA_advance_loc2:
+ if (!ParseOperands("2", &ops)) return false;
+ address_ += ops.offset * cie->code_alignment_factor;
+ break;
+
+ // Advance the address.
+ case DW_CFA_advance_loc4:
+ if (!ParseOperands("4", &ops)) return false;
+ address_ += ops.offset * cie->code_alignment_factor;
+ break;
+
+ // Advance the address.
+ case DW_CFA_MIPS_advance_loc8:
+ if (!ParseOperands("8", &ops)) return false;
+ address_ += ops.offset * cie->code_alignment_factor;
+ break;
+
+ // Compute the CFA by adding an offset to a register.
+ case DW_CFA_def_cfa:
+ if (!ParseOperands("ro", &ops) ||
+ !DoDefCFA(ops.register_number, ops.offset))
+ return false;
+ break;
+
+ // Compute the CFA by adding an offset to a register.
+ case DW_CFA_def_cfa_sf:
+ if (!ParseOperands("rs", &ops) ||
+ !DoDefCFA(ops.register_number,
+ ops.signed_offset * cie->data_alignment_factor))
+ return false;
+ break;
+
+ // Change the base register used to compute the CFA.
+ case DW_CFA_def_cfa_register: {
+ Rule* cfa_rule = rules_.CFARuleRef();
+ if (!cfa_rule->isVALID()) {
+ reporter_->NoCFARule(entry_->offset, entry_->kind, CursorOffset());
+ return false;
+ }
+ if (!ParseOperands("r", &ops)) return false;
+ cfa_rule->SetBaseRegister(ops.register_number);
+ if (!cfa_rule->Handle(handler_, address_, Handler::kCFARegister))
+ return false;
+ break;
+ }
+
+ // Change the offset used to compute the CFA.
+ case DW_CFA_def_cfa_offset:
+ if (!ParseOperands("o", &ops) || !DoDefCFAOffset(ops.offset))
+ return false;
+ break;
+
+ // Change the offset used to compute the CFA.
+ case DW_CFA_def_cfa_offset_sf:
+ if (!ParseOperands("s", &ops) ||
+ !DoDefCFAOffset(ops.signed_offset * cie->data_alignment_factor))
+ return false;
+ break;
+
+ // Specify an expression whose value is the CFA.
+ case DW_CFA_def_cfa_expression: {
+ if (!ParseOperands("e", &ops)) return false;
+ Rule rule = Rule::mkValExpressionRule(ops.expression);
+ rules_.SetCFARule(rule);
+ if (!rule.Handle(handler_, address_, Handler::kCFARegister)) return false;
+ break;
+ }
+
+ // The register's value cannot be recovered.
+ case DW_CFA_undefined: {
+ if (!ParseOperands("r", &ops) ||
+ !DoRule(ops.register_number, Rule::mkUndefinedRule()))
+ return false;
+ break;
+ }
+
+ // The register's value is unchanged from its value in the caller.
+ case DW_CFA_same_value: {
+ if (!ParseOperands("r", &ops) ||
+ !DoRule(ops.register_number, Rule::mkSameValueRule()))
+ return false;
+ break;
+ }
+
+ // Find a register at an offset from the CFA.
+ case DW_CFA_offset_extended:
+ if (!ParseOperands("ro", &ops) ||
+ !DoOffset(ops.register_number,
+ ops.offset * cie->data_alignment_factor))
+ return false;
+ break;
+
+ // The register is saved at an offset from the CFA.
+ case DW_CFA_offset_extended_sf:
+ if (!ParseOperands("rs", &ops) ||
+ !DoOffset(ops.register_number,
+ ops.signed_offset * cie->data_alignment_factor))
+ return false;
+ break;
+
+ // The register is saved at an offset from the CFA.
+ case DW_CFA_GNU_negative_offset_extended:
+ if (!ParseOperands("ro", &ops) ||
+ !DoOffset(ops.register_number,
+ -ops.offset * cie->data_alignment_factor))
+ return false;
+ break;
+
+ // The register's value is the sum of the CFA plus an offset.
+ case DW_CFA_val_offset:
+ if (!ParseOperands("ro", &ops) ||
+ !DoValOffset(ops.register_number,
+ ops.offset * cie->data_alignment_factor))
+ return false;
+ break;
+
+ // The register's value is the sum of the CFA plus an offset.
+ case DW_CFA_val_offset_sf:
+ if (!ParseOperands("rs", &ops) ||
+ !DoValOffset(ops.register_number,
+ ops.signed_offset * cie->data_alignment_factor))
+ return false;
+ break;
+
+ // The register has been saved in another register.
+ case DW_CFA_register: {
+ if (!ParseOperands("ro", &ops) ||
+ !DoRule(ops.register_number, Rule::mkRegisterRule(ops.offset)))
+ return false;
+ break;
+ }
+
+ // An expression yields the address at which the register is saved.
+ case DW_CFA_expression: {
+ if (!ParseOperands("re", &ops) ||
+ !DoRule(ops.register_number, Rule::mkExpressionRule(ops.expression)))
+ return false;
+ break;
+ }
+
+ // An expression yields the caller's value for the register.
+ case DW_CFA_val_expression: {
+ if (!ParseOperands("re", &ops) ||
+ !DoRule(ops.register_number,
+ Rule::mkValExpressionRule(ops.expression)))
+ return false;
+ break;
+ }
+
+ // Restore the rule established for a register by the CIE.
+ case DW_CFA_restore_extended:
+ if (!ParseOperands("r", &ops) || !DoRestore(ops.register_number))
+ return false;
+ break;
+
+ // Save the current set of rules on a stack.
+ case DW_CFA_remember_state:
+ if (!saved_rules_) {
+ saved_rules_ = new std::stack<RuleMap>();
+ }
+ saved_rules_->push(rules_);
+ break;
+
+ // Pop the current set of rules off the stack.
+ case DW_CFA_restore_state: {
+ if (!saved_rules_ || saved_rules_->empty()) {
+ reporter_->EmptyStateStack(entry_->offset, entry_->kind,
+ CursorOffset());
+ return false;
+ }
+ const RuleMap& new_rules = saved_rules_->top();
+ if (rules_.CFARule().isVALID() && !new_rules.CFARule().isVALID()) {
+ reporter_->ClearingCFARule(entry_->offset, entry_->kind,
+ CursorOffset());
+ return false;
+ }
+ rules_.HandleTransitionTo(handler_, address_, new_rules);
+ rules_ = new_rules;
+ saved_rules_->pop();
+ break;
+ }
+
+ // No operation. (Padding instruction.)
+ case DW_CFA_nop:
+ break;
+
+ // A SPARC register window save: Registers 8 through 15 (%o0-%o7)
+ // are saved in registers 24 through 31 (%i0-%i7), and registers
+ // 16 through 31 (%l0-%l7 and %i0-%i7) are saved at CFA offsets
+ // (0-15 * the register size). The register numbers must be
+ // hard-coded. A GNU extension, and not a pretty one.
+ case DW_CFA_GNU_window_save: {
+ // Save %o0-%o7 in %i0-%i7.
+ for (int i = 8; i < 16; i++)
+ if (!DoRule(i, Rule::mkRegisterRule(i + 16))) return false;
+ // Save %l0-%l7 and %i0-%i7 at the CFA.
+ for (int i = 16; i < 32; i++)
+ // Assume that the byte reader's address size is the same as
+ // the architecture's register size. !@#%*^ hilarious.
+ if (!DoRule(i, Rule::mkOffsetRule(Handler::kCFARegister,
+ (i - 16) * reader_->AddressSize())))
+ return false;
+ break;
+ }
+
+ // I'm not sure what this is. GDB doesn't use it for unwinding.
+ case DW_CFA_GNU_args_size:
+ if (!ParseOperands("o", &ops)) return false;
+ break;
+
+ // An opcode we don't recognize.
+ default: {
+ reporter_->BadInstruction(entry_->offset, entry_->kind, CursorOffset());
+ return false;
+ }
+ }
+
+ return true;
+}
+
+// See declaration above for rationale re the no-inline directive.
+MOZ_NEVER_INLINE
+bool CallFrameInfo::State::DoInstructions() {
+ while (cursor_ < entry_->end) {
+ if (!DoInstruction()) {
+ return false;
+ }
+ }
+ return true;
+}
+
+bool CallFrameInfo::State::DoDefCFA(unsigned base_register, long offset) {
+ Rule rule = Rule::mkValOffsetRule(base_register, offset);
+ rules_.SetCFARule(rule);
+ return rule.Handle(handler_, address_, Handler::kCFARegister);
+}
+
+bool CallFrameInfo::State::DoDefCFAOffset(long offset) {
+ Rule* cfa_rule = rules_.CFARuleRef();
+ if (!cfa_rule->isVALID()) {
+ reporter_->NoCFARule(entry_->offset, entry_->kind, CursorOffset());
+ return false;
+ }
+ cfa_rule->SetOffset(offset);
+ return cfa_rule->Handle(handler_, address_, Handler::kCFARegister);
+}
+
+bool CallFrameInfo::State::DoRule(unsigned reg, Rule rule) {
+ rules_.SetRegisterRule(reg, rule);
+ return rule.Handle(handler_, address_, reg);
+}
+
+bool CallFrameInfo::State::DoOffset(unsigned reg, long offset) {
+ if (!rules_.CFARule().isVALID()) {
+ reporter_->NoCFARule(entry_->offset, entry_->kind, CursorOffset());
+ return false;
+ }
+ Rule rule = Rule::mkOffsetRule(Handler::kCFARegister, offset);
+ return DoRule(reg, rule);
+}
+
+bool CallFrameInfo::State::DoValOffset(unsigned reg, long offset) {
+ if (!rules_.CFARule().isVALID()) {
+ reporter_->NoCFARule(entry_->offset, entry_->kind, CursorOffset());
+ return false;
+ }
+ return DoRule(reg, Rule::mkValOffsetRule(Handler::kCFARegister, offset));
+}
+
+bool CallFrameInfo::State::DoRestore(unsigned reg) {
+ // DW_CFA_restore and DW_CFA_restore_extended don't make sense in a CIE.
+ if (entry_->kind == kCIE) {
+ reporter_->RestoreInCIE(entry_->offset, CursorOffset());
+ return false;
+ }
+ Rule rule = cie_rules_.RegisterRule(reg);
+ if (!rule.isVALID()) {
+ // This isn't really the right thing to do, but since CFI generally
+ // only mentions callee-saves registers, and GCC's convention for
+ // callee-saves registers is that they are unchanged, it's a good
+ // approximation.
+ rule = Rule::mkSameValueRule();
+ }
+ return DoRule(reg, rule);
+}
+
+bool CallFrameInfo::ReadEntryPrologue(const char* cursor, Entry* entry) {
+ const char* buffer_end = buffer_ + buffer_length_;
+
+ // Initialize enough of ENTRY for use in error reporting.
+ entry->offset = cursor - buffer_;
+ entry->start = cursor;
+ entry->kind = kUnknown;
+ entry->end = NULL;
+
+ // Read the initial length. This sets reader_'s offset size.
+ size_t length_size;
+ uint64 length = reader_->ReadInitialLength(cursor, &length_size);
+ if (length_size > size_t(buffer_end - cursor)) return ReportIncomplete(entry);
+ cursor += length_size;
+
+ // In a .eh_frame section, a length of zero marks the end of the series
+ // of entries.
+ if (length == 0 && eh_frame_) {
+ entry->kind = kTerminator;
+ entry->end = cursor;
+ return true;
+ }
+
+ // Validate the length.
+ if (length > size_t(buffer_end - cursor)) return ReportIncomplete(entry);
+
+ // The length is the number of bytes after the initial length field;
+ // we have that position handy at this point, so compute the end
+ // now. (If we're parsing 64-bit-offset DWARF on a 32-bit machine,
+ // and the length didn't fit in a size_t, we would have rejected it
+ // above.)
+ entry->end = cursor + length;
+
+ // Parse the next field: either the offset of a CIE or a CIE id.
+ size_t offset_size = reader_->OffsetSize();
+ if (offset_size > size_t(entry->end - cursor)) return ReportIncomplete(entry);
+ entry->id = reader_->ReadOffset(cursor);
+
+ // Don't advance cursor past id field yet; in .eh_frame data we need
+ // the id's position to compute the section offset of an FDE's CIE.
+
+ // Now we can decide what kind of entry this is.
+ if (eh_frame_) {
+ // In .eh_frame data, an ID of zero marks the entry as a CIE, and
+ // anything else is an offset from the id field of the FDE to the start
+ // of the CIE.
+ if (entry->id == 0) {
+ entry->kind = kCIE;
+ } else {
+ entry->kind = kFDE;
+ // Turn the offset from the id into an offset from the buffer's start.
+ entry->id = (cursor - buffer_) - entry->id;
+ }
+ } else {
+ // In DWARF CFI data, an ID of ~0 (of the appropriate width, given the
+ // offset size for the entry) marks the entry as a CIE, and anything
+ // else is the offset of the CIE from the beginning of the section.
+ if (offset_size == 4)
+ entry->kind = (entry->id == 0xffffffff) ? kCIE : kFDE;
+ else {
+ MOZ_ASSERT(offset_size == 8);
+ entry->kind = (entry->id == 0xffffffffffffffffULL) ? kCIE : kFDE;
+ }
+ }
+
+ // Now advance cursor past the id.
+ cursor += offset_size;
+
+ // The fields specific to this kind of entry start here.
+ entry->fields = cursor;
+
+ entry->cie = NULL;
+
+ return true;
+}
+
+bool CallFrameInfo::ReadCIEFields(CIE* cie) {
+ const char* cursor = cie->fields;
+ size_t len;
+
+ MOZ_ASSERT(cie->kind == kCIE);
+
+ // Prepare for early exit.
+ cie->version = 0;
+ cie->augmentation.clear();
+ cie->code_alignment_factor = 0;
+ cie->data_alignment_factor = 0;
+ cie->return_address_register = 0;
+ cie->has_z_augmentation = false;
+ cie->pointer_encoding = DW_EH_PE_absptr;
+ cie->instructions = 0;
+
+ // Parse the version number.
+ if (cie->end - cursor < 1) return ReportIncomplete(cie);
+ cie->version = reader_->ReadOneByte(cursor);
+ cursor++;
+
+ // If we don't recognize the version, we can't parse any more fields of the
+ // CIE. For DWARF CFI, we handle versions 1 through 4 (there was never a
+ // version 2 of CFI data). For .eh_frame, we handle versions 1 and 4 as well;
+ // the difference between those versions seems to be the same as for
+ // .debug_frame.
+ if (cie->version < 1 || cie->version > 4) {
+ reporter_->UnrecognizedVersion(cie->offset, cie->version);
+ return false;
+ }
+
+ const char* augmentation_start = cursor;
+ const void* augmentation_end =
+ memchr(augmentation_start, '\0', cie->end - augmentation_start);
+ if (!augmentation_end) return ReportIncomplete(cie);
+ cursor = static_cast<const char*>(augmentation_end);
+ cie->augmentation = string(augmentation_start, cursor - augmentation_start);
+ // Skip the terminating '\0'.
+ cursor++;
+
+ // Is this CFI augmented?
+ if (!cie->augmentation.empty()) {
+ // Is it an augmentation we recognize?
+ if (cie->augmentation[0] == DW_Z_augmentation_start) {
+ // Linux C++ ABI 'z' augmentation, used for exception handling data.
+ cie->has_z_augmentation = true;
+ } else {
+ // Not an augmentation we recognize. Augmentations can have arbitrary
+ // effects on the form of rest of the content, so we have to give up.
+ reporter_->UnrecognizedAugmentation(cie->offset, cie->augmentation);
+ return false;
+ }
+ }
+
+ if (cie->version >= 4) {
+ // Check that the address_size and segment_size fields are plausible.
+ if (cie->end - cursor < 2) {
+ return ReportIncomplete(cie);
+ }
+ uint8_t address_size = reader_->ReadOneByte(cursor);
+ cursor++;
+ if (address_size != sizeof(void*)) {
+ // This is not per-se invalid CFI. But we can reasonably expect to
+ // be running on a target of the same word size as the CFI is for,
+ // so we reject this case.
+ reporter_->InvalidDwarf4Artefact(cie->offset, "Invalid address_size");
+ return false;
+ }
+ uint8_t segment_size = reader_->ReadOneByte(cursor);
+ cursor++;
+ if (segment_size != 0) {
+ // This is also not per-se invalid CFI, but we don't currently handle
+ // the case of non-zero |segment_size|.
+ reporter_->InvalidDwarf4Artefact(cie->offset, "Invalid segment_size");
+ return false;
+ }
+ // We only continue parsing if |segment_size| is zero. If this routine
+ // is ever changed to allow non-zero |segment_size|, then
+ // ReadFDEFields() below will have to be changed to match, per comments
+ // there.
+ }
+
+ // Parse the code alignment factor.
+ cie->code_alignment_factor = reader_->ReadUnsignedLEB128(cursor, &len);
+ if (size_t(cie->end - cursor) < len) return ReportIncomplete(cie);
+ cursor += len;
+
+ // Parse the data alignment factor.
+ cie->data_alignment_factor = reader_->ReadSignedLEB128(cursor, &len);
+ if (size_t(cie->end - cursor) < len) return ReportIncomplete(cie);
+ cursor += len;
+
+ // Parse the return address register. This is a ubyte in version 1, and
+ // a ULEB128 in version 3.
+ if (cie->version == 1) {
+ if (cursor >= cie->end) return ReportIncomplete(cie);
+ cie->return_address_register = uint8(*cursor++);
+ } else {
+ cie->return_address_register = reader_->ReadUnsignedLEB128(cursor, &len);
+ if (size_t(cie->end - cursor) < len) return ReportIncomplete(cie);
+ cursor += len;
+ }
+
+ // If we have a 'z' augmentation string, find the augmentation data and
+ // use the augmentation string to parse it.
+ if (cie->has_z_augmentation) {
+ uint64_t data_size = reader_->ReadUnsignedLEB128(cursor, &len);
+ if (size_t(cie->end - cursor) < len + data_size)
+ return ReportIncomplete(cie);
+ cursor += len;
+ const char* data = cursor;
+ cursor += data_size;
+ const char* data_end = cursor;
+
+ cie->has_z_lsda = false;
+ cie->has_z_personality = false;
+ cie->has_z_signal_frame = false;
+
+ // Walk the augmentation string, and extract values from the
+ // augmentation data as the string directs.
+ for (size_t i = 1; i < cie->augmentation.size(); i++) {
+ switch (cie->augmentation[i]) {
+ case DW_Z_has_LSDA:
+ // The CIE's augmentation data holds the language-specific data
+ // area pointer's encoding, and the FDE's augmentation data holds
+ // the pointer itself.
+ cie->has_z_lsda = true;
+ // Fetch the LSDA encoding from the augmentation data.
+ if (data >= data_end) return ReportIncomplete(cie);
+ cie->lsda_encoding = DwarfPointerEncoding(*data++);
+ if (!reader_->ValidEncoding(cie->lsda_encoding)) {
+ reporter_->InvalidPointerEncoding(cie->offset, cie->lsda_encoding);
+ return false;
+ }
+ // Don't check if the encoding is usable here --- we haven't
+ // read the FDE's fields yet, so we're not prepared for
+ // DW_EH_PE_funcrel, although that's a fine encoding for the
+ // LSDA to use, since it appears in the FDE.
+ break;
+
+ case DW_Z_has_personality_routine:
+ // The CIE's augmentation data holds the personality routine
+ // pointer's encoding, followed by the pointer itself.
+ cie->has_z_personality = true;
+ // Fetch the personality routine pointer's encoding from the
+ // augmentation data.
+ if (data >= data_end) return ReportIncomplete(cie);
+ cie->personality_encoding = DwarfPointerEncoding(*data++);
+ if (!reader_->ValidEncoding(cie->personality_encoding)) {
+ reporter_->InvalidPointerEncoding(cie->offset,
+ cie->personality_encoding);
+ return false;
+ }
+ if (!reader_->UsableEncoding(cie->personality_encoding)) {
+ reporter_->UnusablePointerEncoding(cie->offset,
+ cie->personality_encoding);
+ return false;
+ }
+ // Fetch the personality routine's pointer itself from the data.
+ cie->personality_address = reader_->ReadEncodedPointer(
+ data, cie->personality_encoding, &len);
+ if (len > size_t(data_end - data)) return ReportIncomplete(cie);
+ data += len;
+ break;
+
+ case DW_Z_has_FDE_address_encoding:
+ // The CIE's augmentation data holds the pointer encoding to use
+ // for addresses in the FDE.
+ if (data >= data_end) return ReportIncomplete(cie);
+ cie->pointer_encoding = DwarfPointerEncoding(*data++);
+ if (!reader_->ValidEncoding(cie->pointer_encoding)) {
+ reporter_->InvalidPointerEncoding(cie->offset,
+ cie->pointer_encoding);
+ return false;
+ }
+ if (!reader_->UsableEncoding(cie->pointer_encoding)) {
+ reporter_->UnusablePointerEncoding(cie->offset,
+ cie->pointer_encoding);
+ return false;
+ }
+ break;
+
+ case DW_Z_is_signal_trampoline:
+ // Frames using this CIE are signal delivery frames.
+ cie->has_z_signal_frame = true;
+ break;
+
+ default:
+ // An augmentation we don't recognize.
+ reporter_->UnrecognizedAugmentation(cie->offset, cie->augmentation);
+ return false;
+ }
+ }
+ }
+
+ // The CIE's instructions start here.
+ cie->instructions = cursor;
+
+ return true;
+}
+
+bool CallFrameInfo::ReadFDEFields(FDE* fde) {
+ const char* cursor = fde->fields;
+ size_t size;
+
+ // At this point, for Dwarf 4 and above, we are assuming that the
+ // associated CIE has its |segment_size| field equal to zero. This is
+ // checked for in ReadCIEFields() above. If ReadCIEFields() is ever
+ // changed to allow non-zero |segment_size| CIEs then we will have to read
+ // the segment_selector value at this point.
+
+ fde->address =
+ reader_->ReadEncodedPointer(cursor, fde->cie->pointer_encoding, &size);
+ if (size > size_t(fde->end - cursor)) return ReportIncomplete(fde);
+ cursor += size;
+ reader_->SetFunctionBase(fde->address);
+
+ // For the length, we strip off the upper nybble of the encoding used for
+ // the starting address.
+ DwarfPointerEncoding length_encoding =
+ DwarfPointerEncoding(fde->cie->pointer_encoding & 0x0f);
+ fde->size = reader_->ReadEncodedPointer(cursor, length_encoding, &size);
+ if (size > size_t(fde->end - cursor)) return ReportIncomplete(fde);
+ cursor += size;
+
+ // If the CIE has a 'z' augmentation string, then augmentation data
+ // appears here.
+ if (fde->cie->has_z_augmentation) {
+ uint64_t data_size = reader_->ReadUnsignedLEB128(cursor, &size);
+ if (size_t(fde->end - cursor) < size + data_size)
+ return ReportIncomplete(fde);
+ cursor += size;
+
+ // In the abstract, we should walk the augmentation string, and extract
+ // items from the FDE's augmentation data as we encounter augmentation
+ // string characters that specify their presence: the ordering of items
+ // in the augmentation string determines the arrangement of values in
+ // the augmentation data.
+ //
+ // In practice, there's only ever one value in FDE augmentation data
+ // that we support --- the LSDA pointer --- and we have to bail if we
+ // see any unrecognized augmentation string characters. So if there is
+ // anything here at all, we know what it is, and where it starts.
+ if (fde->cie->has_z_lsda) {
+ // Check whether the LSDA's pointer encoding is usable now: only once
+ // we've parsed the FDE's starting address do we call reader_->
+ // SetFunctionBase, so that the DW_EH_PE_funcrel encoding becomes
+ // usable.
+ if (!reader_->UsableEncoding(fde->cie->lsda_encoding)) {
+ reporter_->UnusablePointerEncoding(fde->cie->offset,
+ fde->cie->lsda_encoding);
+ return false;
+ }
+
+ fde->lsda_address =
+ reader_->ReadEncodedPointer(cursor, fde->cie->lsda_encoding, &size);
+ if (size > data_size) return ReportIncomplete(fde);
+ // Ideally, we would also complain here if there were unconsumed
+ // augmentation data.
+ }
+
+ cursor += data_size;
+ }
+
+ // The FDE's instructions start after those.
+ fde->instructions = cursor;
+
+ return true;
+}
+
+bool CallFrameInfo::Start() {
+ const char* buffer_end = buffer_ + buffer_length_;
+ const char* cursor;
+ bool all_ok = true;
+ const char* entry_end;
+ bool ok;
+
+ // Traverse all the entries in buffer_, skipping CIEs and offering
+ // FDEs to the handler.
+ for (cursor = buffer_; cursor < buffer_end;
+ cursor = entry_end, all_ok = all_ok && ok) {
+ FDE fde;
+
+ // Make it easy to skip this entry with 'continue': assume that
+ // things are not okay until we've checked all the data, and
+ // prepare the address of the next entry.
+ ok = false;
+
+ // Read the entry's prologue.
+ if (!ReadEntryPrologue(cursor, &fde)) {
+ if (!fde.end) {
+ // If we couldn't even figure out this entry's extent, then we
+ // must stop processing entries altogether.
+ all_ok = false;
+ break;
+ }
+ entry_end = fde.end;
+ continue;
+ }
+
+ // The next iteration picks up after this entry.
+ entry_end = fde.end;
+
+ // Did we see an .eh_frame terminating mark?
+ if (fde.kind == kTerminator) {
+ // If there appears to be more data left in the section after the
+ // terminating mark, warn the user. But this is just a warning;
+ // we leave all_ok true.
+ if (fde.end < buffer_end) reporter_->EarlyEHTerminator(fde.offset);
+ break;
+ }
+
+ // In this loop, we skip CIEs. We only parse them fully when we
+ // parse an FDE that refers to them. This limits our memory
+ // consumption (beyond the buffer itself) to that needed to
+ // process the largest single entry.
+ if (fde.kind != kFDE) {
+ ok = true;
+ continue;
+ }
+
+ // Validate the CIE pointer.
+ if (fde.id > buffer_length_) {
+ reporter_->CIEPointerOutOfRange(fde.offset, fde.id);
+ continue;
+ }
+
+ CIE cie;
+
+ // Parse this FDE's CIE header.
+ if (!ReadEntryPrologue(buffer_ + fde.id, &cie)) continue;
+ // This had better be an actual CIE.
+ if (cie.kind != kCIE) {
+ reporter_->BadCIEId(fde.offset, fde.id);
+ continue;
+ }
+ if (!ReadCIEFields(&cie)) continue;
+
+ // We now have the values that govern both the CIE and the FDE.
+ cie.cie = &cie;
+ fde.cie = &cie;
+
+ // Parse the FDE's header.
+ if (!ReadFDEFields(&fde)) continue;
+
+ // Call Entry to ask the consumer if they're interested.
+ if (!handler_->Entry(fde.offset, fde.address, fde.size, cie.version,
+ cie.augmentation, cie.return_address_register)) {
+ // The handler isn't interested in this entry. That's not an error.
+ ok = true;
+ continue;
+ }
+
+ if (cie.has_z_augmentation) {
+ // Report the personality routine address, if we have one.
+ if (cie.has_z_personality) {
+ if (!handler_->PersonalityRoutine(
+ cie.personality_address,
+ IsIndirectEncoding(cie.personality_encoding)))
+ continue;
+ }
+
+ // Report the language-specific data area address, if we have one.
+ if (cie.has_z_lsda) {
+ if (!handler_->LanguageSpecificDataArea(
+ fde.lsda_address, IsIndirectEncoding(cie.lsda_encoding)))
+ continue;
+ }
+
+ // If this is a signal-handling frame, report that.
+ if (cie.has_z_signal_frame) {
+ if (!handler_->SignalHandler()) continue;
+ }
+ }
+
+ // Interpret the CIE's instructions, and then the FDE's instructions.
+ State state(reader_, handler_, reporter_, fde.address);
+ ok = state.InterpretCIE(cie) && state.InterpretFDE(fde);
+
+ // Tell the ByteReader that the function start address from the
+ // FDE header is no longer valid.
+ reader_->ClearFunctionBase();
+
+ // Report the end of the entry.
+ handler_->End();
+ }
+
+ return all_ok;
+}
+
+const char* CallFrameInfo::KindName(EntryKind kind) {
+ if (kind == CallFrameInfo::kUnknown)
+ return "entry";
+ else if (kind == CallFrameInfo::kCIE)
+ return "common information entry";
+ else if (kind == CallFrameInfo::kFDE)
+ return "frame description entry";
+ else {
+ MOZ_ASSERT(kind == CallFrameInfo::kTerminator);
+ return ".eh_frame sequence terminator";
+ }
+}
+
+bool CallFrameInfo::ReportIncomplete(Entry* entry) {
+ reporter_->Incomplete(entry->offset, entry->kind);
+ return false;
+}
+
+void CallFrameInfo::Reporter::Incomplete(uint64 offset,
+ CallFrameInfo::EntryKind kind) {
+ char buf[300];
+ SprintfLiteral(buf, "%s: CFI %s at offset 0x%llx in '%s': entry ends early\n",
+ filename_.c_str(), CallFrameInfo::KindName(kind), offset,
+ section_.c_str());
+ log_(buf);
+}
+
+void CallFrameInfo::Reporter::EarlyEHTerminator(uint64 offset) {
+ char buf[300];
+ SprintfLiteral(buf,
+ "%s: CFI at offset 0x%llx in '%s': saw end-of-data marker"
+ " before end of section contents\n",
+ filename_.c_str(), offset, section_.c_str());
+ log_(buf);
+}
+
+void CallFrameInfo::Reporter::CIEPointerOutOfRange(uint64 offset,
+ uint64 cie_offset) {
+ char buf[300];
+ SprintfLiteral(buf,
+ "%s: CFI frame description entry at offset 0x%llx in '%s':"
+ " CIE pointer is out of range: 0x%llx\n",
+ filename_.c_str(), offset, section_.c_str(), cie_offset);
+ log_(buf);
+}
+
+void CallFrameInfo::Reporter::BadCIEId(uint64 offset, uint64 cie_offset) {
+ char buf[300];
+ SprintfLiteral(buf,
+ "%s: CFI frame description entry at offset 0x%llx in '%s':"
+ " CIE pointer does not point to a CIE: 0x%llx\n",
+ filename_.c_str(), offset, section_.c_str(), cie_offset);
+ log_(buf);
+}
+
+void CallFrameInfo::Reporter::UnrecognizedVersion(uint64 offset, int version) {
+ char buf[300];
+ SprintfLiteral(buf,
+ "%s: CFI frame description entry at offset 0x%llx in '%s':"
+ " CIE specifies unrecognized version: %d\n",
+ filename_.c_str(), offset, section_.c_str(), version);
+ log_(buf);
+}
+
+void CallFrameInfo::Reporter::UnrecognizedAugmentation(uint64 offset,
+ const string& aug) {
+ char buf[300];
+ SprintfLiteral(buf,
+ "%s: CFI frame description entry at offset 0x%llx in '%s':"
+ " CIE specifies unrecognized augmentation: '%s'\n",
+ filename_.c_str(), offset, section_.c_str(), aug.c_str());
+ log_(buf);
+}
+
+void CallFrameInfo::Reporter::InvalidDwarf4Artefact(uint64 offset,
+ const char* what) {
+ char* what_safe = strndup(what, 100);
+ char buf[300];
+ SprintfLiteral(buf,
+ "%s: CFI frame description entry at offset 0x%llx in '%s':"
+ " CIE specifies invalid Dwarf4 artefact: %s\n",
+ filename_.c_str(), offset, section_.c_str(), what_safe);
+ log_(buf);
+ free(what_safe);
+}
+
+void CallFrameInfo::Reporter::InvalidPointerEncoding(uint64 offset,
+ uint8 encoding) {
+ char buf[300];
+ SprintfLiteral(buf,
+ "%s: CFI common information entry at offset 0x%llx in '%s':"
+ " 'z' augmentation specifies invalid pointer encoding: "
+ "0x%02x\n",
+ filename_.c_str(), offset, section_.c_str(), encoding);
+ log_(buf);
+}
+
+void CallFrameInfo::Reporter::UnusablePointerEncoding(uint64 offset,
+ uint8 encoding) {
+ char buf[300];
+ SprintfLiteral(buf,
+ "%s: CFI common information entry at offset 0x%llx in '%s':"
+ " 'z' augmentation specifies a pointer encoding for which"
+ " we have no base address: 0x%02x\n",
+ filename_.c_str(), offset, section_.c_str(), encoding);
+ log_(buf);
+}
+
+void CallFrameInfo::Reporter::RestoreInCIE(uint64 offset, uint64 insn_offset) {
+ char buf[300];
+ SprintfLiteral(buf,
+ "%s: CFI common information entry at offset 0x%llx in '%s':"
+ " the DW_CFA_restore instruction at offset 0x%llx"
+ " cannot be used in a common information entry\n",
+ filename_.c_str(), offset, section_.c_str(), insn_offset);
+ log_(buf);
+}
+
+void CallFrameInfo::Reporter::BadInstruction(uint64 offset,
+ CallFrameInfo::EntryKind kind,
+ uint64 insn_offset) {
+ char buf[300];
+ SprintfLiteral(buf,
+ "%s: CFI %s at offset 0x%llx in section '%s':"
+ " the instruction at offset 0x%llx is unrecognized\n",
+ filename_.c_str(), CallFrameInfo::KindName(kind), offset,
+ section_.c_str(), insn_offset);
+ log_(buf);
+}
+
+void CallFrameInfo::Reporter::NoCFARule(uint64 offset,
+ CallFrameInfo::EntryKind kind,
+ uint64 insn_offset) {
+ char buf[300];
+ SprintfLiteral(buf,
+ "%s: CFI %s at offset 0x%llx in section '%s':"
+ " the instruction at offset 0x%llx assumes that a CFA rule "
+ "has been set, but none has been set\n",
+ filename_.c_str(), CallFrameInfo::KindName(kind), offset,
+ section_.c_str(), insn_offset);
+ log_(buf);
+}
+
+void CallFrameInfo::Reporter::EmptyStateStack(uint64 offset,
+ CallFrameInfo::EntryKind kind,
+ uint64 insn_offset) {
+ char buf[300];
+ SprintfLiteral(buf,
+ "%s: CFI %s at offset 0x%llx in section '%s':"
+ " the DW_CFA_restore_state instruction at offset 0x%llx"
+ " should pop a saved state from the stack, but the stack "
+ "is empty\n",
+ filename_.c_str(), CallFrameInfo::KindName(kind), offset,
+ section_.c_str(), insn_offset);
+ log_(buf);
+}
+
+void CallFrameInfo::Reporter::ClearingCFARule(uint64 offset,
+ CallFrameInfo::EntryKind kind,
+ uint64 insn_offset) {
+ char buf[300];
+ SprintfLiteral(buf,
+ "%s: CFI %s at offset 0x%llx in section '%s':"
+ " the DW_CFA_restore_state instruction at offset 0x%llx"
+ " would clear the CFA rule in effect\n",
+ filename_.c_str(), CallFrameInfo::KindName(kind), offset,
+ section_.c_str(), insn_offset);
+ log_(buf);
+}
+
+unsigned int DwarfCFIToModule::RegisterNames::I386() {
+ /*
+ 8 "$eax", "$ecx", "$edx", "$ebx", "$esp", "$ebp", "$esi", "$edi",
+ 3 "$eip", "$eflags", "$unused1",
+ 8 "$st0", "$st1", "$st2", "$st3", "$st4", "$st5", "$st6", "$st7",
+ 2 "$unused2", "$unused3",
+ 8 "$xmm0", "$xmm1", "$xmm2", "$xmm3", "$xmm4", "$xmm5", "$xmm6", "$xmm7",
+ 8 "$mm0", "$mm1", "$mm2", "$mm3", "$mm4", "$mm5", "$mm6", "$mm7",
+ 3 "$fcw", "$fsw", "$mxcsr",
+ 8 "$es", "$cs", "$ss", "$ds", "$fs", "$gs", "$unused4", "$unused5",
+ 2 "$tr", "$ldtr"
+ */
+ return 8 + 3 + 8 + 2 + 8 + 8 + 3 + 8 + 2;
+}
+
+unsigned int DwarfCFIToModule::RegisterNames::X86_64() {
+ /*
+ 8 "$rax", "$rdx", "$rcx", "$rbx", "$rsi", "$rdi", "$rbp", "$rsp",
+ 8 "$r8", "$r9", "$r10", "$r11", "$r12", "$r13", "$r14", "$r15",
+ 1 "$rip",
+ 8 "$xmm0","$xmm1","$xmm2", "$xmm3", "$xmm4", "$xmm5", "$xmm6", "$xmm7",
+ 8 "$xmm8","$xmm9","$xmm10","$xmm11","$xmm12","$xmm13","$xmm14","$xmm15",
+ 8 "$st0", "$st1", "$st2", "$st3", "$st4", "$st5", "$st6", "$st7",
+ 8 "$mm0", "$mm1", "$mm2", "$mm3", "$mm4", "$mm5", "$mm6", "$mm7",
+ 1 "$rflags",
+ 8 "$es", "$cs", "$ss", "$ds", "$fs", "$gs", "$unused1", "$unused2",
+ 4 "$fs.base", "$gs.base", "$unused3", "$unused4",
+ 2 "$tr", "$ldtr",
+ 3 "$mxcsr", "$fcw", "$fsw"
+ */
+ return 8 + 8 + 1 + 8 + 8 + 8 + 8 + 1 + 8 + 4 + 2 + 3;
+}
+
+// Per ARM IHI 0040A, section 3.1
+unsigned int DwarfCFIToModule::RegisterNames::ARM() {
+ /*
+ 8 "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7",
+ 8 "r8", "r9", "r10", "r11", "r12", "sp", "lr", "pc",
+ 8 "f0", "f1", "f2", "f3", "f4", "f5", "f6", "f7",
+ 8 "fps", "cpsr", "", "", "", "", "", "",
+ 8 "", "", "", "", "", "", "", "",
+ 8 "", "", "", "", "", "", "", "",
+ 8 "", "", "", "", "", "", "", "",
+ 8 "", "", "", "", "", "", "", "",
+ 8 "s0", "s1", "s2", "s3", "s4", "s5", "s6", "s7",
+ 8 "s8", "s9", "s10", "s11", "s12", "s13", "s14", "s15",
+ 8 "s16", "s17", "s18", "s19", "s20", "s21", "s22", "s23",
+ 8 "s24", "s25", "s26", "s27", "s28", "s29", "s30", "s31",
+ 8 "f0", "f1", "f2", "f3", "f4", "f5", "f6", "f7"
+ */
+ return 13 * 8;
+}
+
+// Per ARM IHI 0057A, section 3.1
+unsigned int DwarfCFIToModule::RegisterNames::ARM64() {
+ /*
+ 8 "x0", "x1", "x2", "x3", "x4", "x5", "x6", "x7",
+ 8 "x8", "x9", "x10", "x11", "x12", "x13", "x14", "x15",
+ 8 "x16" "x17", "x18", "x19", "x20", "x21", "x22", "x23",
+ 8 "x24", "x25", "x26", "x27", "x28", "x29", "x30","sp",
+ 8 "", "", "", "", "", "", "", "",
+ 8 "", "", "", "", "", "", "", "",
+ 8 "", "", "", "", "", "", "", "",
+ 8 "", "", "", "", "", "", "", "",
+ 8 "v0", "v1", "v2", "v3", "v4", "v5", "v6", "v7",
+ 8 "v8", "v9", "v10", "v11", "v12", "v13", "v14", "v15",
+ 8 "v16", "v17", "v18", "v19", "v20", "v21", "v22, "v23",
+ 8 "v24", "x25", "x26, "x27", "v28", "v29", "v30", "v31",
+ */
+ return 12 * 8;
+}
+
+unsigned int DwarfCFIToModule::RegisterNames::MIPS() {
+ /*
+ 8 "$zero", "$at", "$v0", "$v1", "$a0", "$a1", "$a2", "$a3",
+ 8 "$t0", "$t1", "$t2", "$t3", "$t4", "$t5", "$t6", "$t7",
+ 8 "$s0", "$s1", "$s2", "$s3", "$s4", "$s5", "$s6", "$s7",
+ 8 "$t8", "$t9", "$k0", "$k1", "$gp", "$sp", "$fp", "$ra",
+ 9 "$lo", "$hi", "$pc", "$f0", "$f1", "$f2", "$f3", "$f4", "$f5",
+ 8 "$f6", "$f7", "$f8", "$f9", "$f10", "$f11", "$f12", "$f13",
+ 7 "$f14", "$f15", "$f16", "$f17", "$f18", "$f19", "$f20",
+ 7 "$f21", "$f22", "$f23", "$f24", "$f25", "$f26", "$f27",
+ 6 "$f28", "$f29", "$f30", "$f31", "$fcsr", "$fir"
+ */
+ return 8 + 8 + 8 + 8 + 9 + 8 + 7 + 7 + 6;
+}
+
+// See prototype for comments.
+int32_t parseDwarfExpr(Summariser* summ, const ByteReader* reader,
+ ImageSlice expr, bool debug, bool pushCfaAtStart,
+ bool derefAtEnd) {
+ const char* cursor = expr.start_;
+ const char* end1 = cursor + expr.length_;
+
+ char buf[100];
+ if (debug) {
+ SprintfLiteral(buf, "LUL.DW << DwarfExpr, len is %d\n",
+ (int)(end1 - cursor));
+ summ->Log(buf);
+ }
+
+ // Add a marker for the start of this expression. In it, indicate
+ // whether or not the CFA should be pushed onto the stack prior to
+ // evaluation.
+ int32_t start_ix =
+ summ->AddPfxInstr(PfxInstr(PX_Start, pushCfaAtStart ? 1 : 0));
+ MOZ_ASSERT(start_ix >= 0);
+
+ while (cursor < end1) {
+ uint8 opc = reader->ReadOneByte(cursor);
+ cursor++;
+
+ const char* nm = nullptr;
+ PfxExprOp pxop = PX_End;
+
+ switch (opc) {
+ case DW_OP_lit0 ... DW_OP_lit31: {
+ int32_t simm32 = (int32_t)(opc - DW_OP_lit0);
+ if (debug) {
+ SprintfLiteral(buf, "LUL.DW DW_OP_lit%d\n", (int)simm32);
+ summ->Log(buf);
+ }
+ (void)summ->AddPfxInstr(PfxInstr(PX_SImm32, simm32));
+ break;
+ }
+
+ case DW_OP_breg0 ... DW_OP_breg31: {
+ size_t len;
+ int64_t n = reader->ReadSignedLEB128(cursor, &len);
+ cursor += len;
+ DW_REG_NUMBER reg = (DW_REG_NUMBER)(opc - DW_OP_breg0);
+ if (debug) {
+ SprintfLiteral(buf, "LUL.DW DW_OP_breg%d %lld\n", (int)reg,
+ (long long int)n);
+ summ->Log(buf);
+ }
+ // PfxInstr only allows a 32 bit signed offset. So we
+ // must fail if the immediate is out of range.
+ if (n < INT32_MIN || INT32_MAX < n) goto fail;
+ (void)summ->AddPfxInstr(PfxInstr(PX_DwReg, reg));
+ (void)summ->AddPfxInstr(PfxInstr(PX_SImm32, (int32_t)n));
+ (void)summ->AddPfxInstr(PfxInstr(PX_Add));
+ break;
+ }
+
+ case DW_OP_const4s: {
+ uint64_t u64 = reader->ReadFourBytes(cursor);
+ cursor += 4;
+ // u64 is guaranteed by |ReadFourBytes| to be in the
+ // range 0 .. FFFFFFFF inclusive. But to be safe:
+ uint32_t u32 = (uint32_t)(u64 & 0xFFFFFFFF);
+ int32_t s32 = (int32_t)u32;
+ if (debug) {
+ SprintfLiteral(buf, "LUL.DW DW_OP_const4s %d\n", (int)s32);
+ summ->Log(buf);
+ }
+ (void)summ->AddPfxInstr(PfxInstr(PX_SImm32, s32));
+ break;
+ }
+
+ case DW_OP_deref:
+ nm = "deref";
+ pxop = PX_Deref;
+ goto no_operands;
+ case DW_OP_and:
+ nm = "and";
+ pxop = PX_And;
+ goto no_operands;
+ case DW_OP_plus:
+ nm = "plus";
+ pxop = PX_Add;
+ goto no_operands;
+ case DW_OP_minus:
+ nm = "minus";
+ pxop = PX_Sub;
+ goto no_operands;
+ case DW_OP_shl:
+ nm = "shl";
+ pxop = PX_Shl;
+ goto no_operands;
+ case DW_OP_ge:
+ nm = "ge";
+ pxop = PX_CmpGES;
+ goto no_operands;
+ no_operands:
+ MOZ_ASSERT(nm && pxop != PX_End);
+ if (debug) {
+ SprintfLiteral(buf, "LUL.DW DW_OP_%s\n", nm);
+ summ->Log(buf);
+ }
+ (void)summ->AddPfxInstr(PfxInstr(pxop));
+ break;
+
+ default:
+ if (debug) {
+ SprintfLiteral(buf, "LUL.DW unknown opc %d\n", (int)opc);
+ summ->Log(buf);
+ }
+ goto fail;
+
+ } // switch (opc)
+
+ } // while (cursor < end1)
+
+ MOZ_ASSERT(cursor >= end1);
+
+ if (cursor > end1) {
+ // We overran the Dwarf expression. Give up.
+ goto fail;
+ }
+
+ // For DW_CFA_expression, what the expression denotes is the address
+ // of where the previous value is located. The caller of this routine
+ // may therefore request one last dereference before the end marker is
+ // inserted.
+ if (derefAtEnd) {
+ (void)summ->AddPfxInstr(PfxInstr(PX_Deref));
+ }
+
+ // Insert an end marker, and declare success.
+ (void)summ->AddPfxInstr(PfxInstr(PX_End));
+ if (debug) {
+ SprintfLiteral(buf,
+ "LUL.DW conversion of dwarf expression succeeded, "
+ "ix = %d\n",
+ (int)start_ix);
+ summ->Log(buf);
+ summ->Log("LUL.DW >>\n");
+ }
+ return start_ix;
+
+fail:
+ if (debug) {
+ summ->Log("LUL.DW conversion of dwarf expression failed\n");
+ summ->Log("LUL.DW >>\n");
+ }
+ return -1;
+}
+
+bool DwarfCFIToModule::Entry(size_t offset, uint64 address, uint64 length,
+ uint8 version, const string& augmentation,
+ unsigned return_address) {
+ if (DEBUG_DWARF) {
+ char buf[100];
+ SprintfLiteral(buf, "LUL.DW DwarfCFIToModule::Entry 0x%llx,+%lld\n",
+ address, length);
+ summ_->Log(buf);
+ }
+
+ summ_->Entry(address, length);
+
+ // If dwarf2reader::CallFrameInfo can handle this version and
+ // augmentation, then we should be okay with that, so there's no
+ // need to check them here.
+
+ // Get ready to collect entries.
+ return_address_ = return_address;
+
+ // Breakpad STACK CFI records must provide a .ra rule, but DWARF CFI
+ // may not establish any rule for .ra if the return address column
+ // is an ordinary register, and that register holds the return
+ // address on entry to the function. So establish an initial .ra
+ // rule citing the return address register.
+ if (return_address_ < num_dw_regs_) {
+ summ_->Rule(address, return_address_, NODEREF, return_address, 0);
+ }
+
+ return true;
+}
+
+const UniqueString* DwarfCFIToModule::RegisterName(int i) {
+ if (i < 0) {
+ MOZ_ASSERT(i == kCFARegister);
+ return usu_->ToUniqueString(".cfa");
+ }
+ unsigned reg = i;
+ if (reg == return_address_) return usu_->ToUniqueString(".ra");
+
+ char buf[30];
+ SprintfLiteral(buf, "dwarf_reg_%u", reg);
+ return usu_->ToUniqueString(buf);
+}
+
+bool DwarfCFIToModule::UndefinedRule(uint64 address, int reg) {
+ reporter_->UndefinedNotSupported(entry_offset_, RegisterName(reg));
+ // Treat this as a non-fatal error.
+ return true;
+}
+
+bool DwarfCFIToModule::SameValueRule(uint64 address, int reg) {
+ if (DEBUG_DWARF) {
+ char buf[100];
+ SprintfLiteral(buf, "LUL.DW 0x%llx: old r%d = Same\n", address, reg);
+ summ_->Log(buf);
+ }
+ // reg + 0
+ summ_->Rule(address, reg, NODEREF, reg, 0);
+ return true;
+}
+
+bool DwarfCFIToModule::OffsetRule(uint64 address, int reg, int base_register,
+ long offset) {
+ if (DEBUG_DWARF) {
+ char buf[100];
+ SprintfLiteral(buf, "LUL.DW 0x%llx: old r%d = *(r%d + %ld)\n", address,
+ reg, base_register, offset);
+ summ_->Log(buf);
+ }
+ // *(base_register + offset)
+ summ_->Rule(address, reg, DEREF, base_register, offset);
+ return true;
+}
+
+bool DwarfCFIToModule::ValOffsetRule(uint64 address, int reg, int base_register,
+ long offset) {
+ if (DEBUG_DWARF) {
+ char buf[100];
+ SprintfLiteral(buf, "LUL.DW 0x%llx: old r%d = r%d + %ld\n", address, reg,
+ base_register, offset);
+ summ_->Log(buf);
+ }
+ // base_register + offset
+ summ_->Rule(address, reg, NODEREF, base_register, offset);
+ return true;
+}
+
+bool DwarfCFIToModule::RegisterRule(uint64 address, int reg,
+ int base_register) {
+ if (DEBUG_DWARF) {
+ char buf[100];
+ SprintfLiteral(buf, "LUL.DW 0x%llx: old r%d = r%d\n", address, reg,
+ base_register);
+ summ_->Log(buf);
+ }
+ // base_register + 0
+ summ_->Rule(address, reg, NODEREF, base_register, 0);
+ return true;
+}
+
+bool DwarfCFIToModule::ExpressionRule(uint64 address, int reg,
+ const ImageSlice& expression) {
+ bool debug = !!DEBUG_DWARF;
+ int32_t start_ix =
+ parseDwarfExpr(summ_, reader_, expression, debug, true /*pushCfaAtStart*/,
+ true /*derefAtEnd*/);
+ if (start_ix >= 0) {
+ summ_->Rule(address, reg, PFXEXPR, 0, start_ix);
+ } else {
+ // Parsing of the Dwarf expression failed. Treat this as a
+ // non-fatal error, hence return |true| even on this path.
+ reporter_->ExpressionCouldNotBeSummarised(entry_offset_, RegisterName(reg));
+ }
+ return true;
+}
+
+bool DwarfCFIToModule::ValExpressionRule(uint64 address, int reg,
+ const ImageSlice& expression) {
+ bool debug = !!DEBUG_DWARF;
+ int32_t start_ix =
+ parseDwarfExpr(summ_, reader_, expression, debug, true /*pushCfaAtStart*/,
+ false /*!derefAtEnd*/);
+ if (start_ix >= 0) {
+ summ_->Rule(address, reg, PFXEXPR, 0, start_ix);
+ } else {
+ // Parsing of the Dwarf expression failed. Treat this as a
+ // non-fatal error, hence return |true| even on this path.
+ reporter_->ExpressionCouldNotBeSummarised(entry_offset_, RegisterName(reg));
+ }
+ return true;
+}
+
+bool DwarfCFIToModule::End() {
+ // module_->AddStackFrameEntry(entry_);
+ if (DEBUG_DWARF) {
+ summ_->Log("LUL.DW DwarfCFIToModule::End()\n");
+ }
+ summ_->End();
+ return true;
+}
+
+void DwarfCFIToModule::Reporter::UndefinedNotSupported(
+ size_t offset, const UniqueString* reg) {
+ char buf[300];
+ SprintfLiteral(buf, "DwarfCFIToModule::Reporter::UndefinedNotSupported()\n");
+ log_(buf);
+ // BPLOG(INFO) << file_ << ", section '" << section_
+ // << "': the call frame entry at offset 0x"
+ // << std::setbase(16) << offset << std::setbase(10)
+ // << " sets the rule for register '" << FromUniqueString(reg)
+ // << "' to 'undefined', but the Breakpad symbol file format cannot "
+ // << " express this";
+}
+
+// FIXME: move this somewhere sensible
+static bool is_power_of_2(uint64_t n) {
+ int i, nSetBits = 0;
+ for (i = 0; i < 8 * (int)sizeof(n); i++) {
+ if ((n & ((uint64_t)1) << i) != 0) nSetBits++;
+ }
+ return nSetBits <= 1;
+}
+
+void DwarfCFIToModule::Reporter::ExpressionCouldNotBeSummarised(
+ size_t offset, const UniqueString* reg) {
+ static uint64_t n_complaints = 0; // This isn't threadsafe
+ n_complaints++;
+ if (!is_power_of_2(n_complaints)) return;
+ char buf[300];
+ SprintfLiteral(buf,
+ "DwarfCFIToModule::Reporter::"
+ "ExpressionCouldNotBeSummarised(shown %llu times)\n",
+ (unsigned long long int)n_complaints);
+ log_(buf);
+}
+
+} // namespace lul
diff --git a/tools/profiler/lul/LulDwarfExt.h b/tools/profiler/lul/LulDwarfExt.h
new file mode 100644
index 0000000000..4ee6fe17a8
--- /dev/null
+++ b/tools/profiler/lul/LulDwarfExt.h
@@ -0,0 +1,1312 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+
+// Copyright 2006, 2010 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.
+
+// Original author: Jim Blandy <jimb@mozilla.com> <jimb@red-bean.com>
+
+// This file is derived from the following files in
+// toolkit/crashreporter/google-breakpad:
+// src/common/dwarf/types.h
+// src/common/dwarf/dwarf2enums.h
+// src/common/dwarf/bytereader.h
+// src/common/dwarf_cfi_to_module.h
+// src/common/dwarf/dwarf2reader.h
+
+#ifndef LulDwarfExt_h
+#define LulDwarfExt_h
+
+#include "LulDwarfSummariser.h"
+
+#include "mozilla/Assertions.h"
+
+#include <stdint.h>
+#include <string>
+
+typedef signed char int8;
+typedef short int16;
+typedef int int32;
+typedef long long int64;
+
+typedef unsigned char uint8;
+typedef unsigned short uint16;
+typedef unsigned int uint32;
+typedef unsigned long long uint64;
+
+#ifdef __PTRDIFF_TYPE__
+typedef __PTRDIFF_TYPE__ intptr;
+typedef unsigned __PTRDIFF_TYPE__ uintptr;
+#else
+# error "Can't find pointer-sized integral types."
+#endif
+
+namespace lul {
+
+class UniqueString;
+
+// This represents a read-only slice of the "image" (the temporarily mmaped-in
+// .so). It is used for representing byte ranges containing Dwarf expressions.
+// Note that equality (operator==) is on slice contents, not slice locations.
+struct ImageSlice {
+ const char* start_;
+ size_t length_;
+ ImageSlice() : start_(0), length_(0) {}
+ ImageSlice(const char* start, size_t length)
+ : start_(start), length_(length) {}
+ // Make one from a C string (for testing only). Note, the terminating zero
+ // is not included in the length.
+ explicit ImageSlice(const char* cstring)
+ : start_(cstring), length_(strlen(cstring)) {}
+ explicit ImageSlice(const std::string& str)
+ : start_(str.c_str()), length_(str.length()) {}
+ ImageSlice(const ImageSlice& other)
+ : start_(other.start_), length_(other.length_) {}
+ ImageSlice(ImageSlice& other)
+ : start_(other.start_), length_(other.length_) {}
+ bool operator==(const ImageSlice& other) const {
+ if (length_ != other.length_) {
+ return false;
+ }
+ // This relies on the fact that that memcmp returns zero whenever length_
+ // is zero.
+ return memcmp(start_, other.start_, length_) == 0;
+ }
+};
+
+// Exception handling frame description pointer formats, as described
+// by the Linux Standard Base Core Specification 4.0, section 11.5,
+// DWARF Extensions.
+enum DwarfPointerEncoding {
+ DW_EH_PE_absptr = 0x00,
+ DW_EH_PE_omit = 0xff,
+ DW_EH_PE_uleb128 = 0x01,
+ DW_EH_PE_udata2 = 0x02,
+ DW_EH_PE_udata4 = 0x03,
+ DW_EH_PE_udata8 = 0x04,
+ DW_EH_PE_sleb128 = 0x09,
+ DW_EH_PE_sdata2 = 0x0A,
+ DW_EH_PE_sdata4 = 0x0B,
+ DW_EH_PE_sdata8 = 0x0C,
+ DW_EH_PE_pcrel = 0x10,
+ DW_EH_PE_textrel = 0x20,
+ DW_EH_PE_datarel = 0x30,
+ DW_EH_PE_funcrel = 0x40,
+ DW_EH_PE_aligned = 0x50,
+
+ // The GNU toolchain sources define this enum value as well,
+ // simply to help classify the lower nybble values into signed and
+ // unsigned groups.
+ DW_EH_PE_signed = 0x08,
+
+ // This is not documented in LSB 4.0, but it is used in both the
+ // Linux and OS X toolchains. It can be added to any other
+ // encoding (except DW_EH_PE_aligned), and indicates that the
+ // encoded value represents the address at which the true address
+ // is stored, not the true address itself.
+ DW_EH_PE_indirect = 0x80
+};
+
+// We can't use the obvious name of LITTLE_ENDIAN and BIG_ENDIAN
+// because it conflicts with a macro
+enum Endianness { ENDIANNESS_BIG, ENDIANNESS_LITTLE };
+
+// A ByteReader knows how to read single- and multi-byte values of
+// various endiannesses, sizes, and encodings, as used in DWARF
+// debugging information and Linux C++ exception handling data.
+class ByteReader {
+ public:
+ // Construct a ByteReader capable of reading one-, two-, four-, and
+ // eight-byte values according to ENDIANNESS, absolute machine-sized
+ // addresses, DWARF-style "initial length" values, signed and
+ // unsigned LEB128 numbers, and Linux C++ exception handling data's
+ // encoded pointers.
+ explicit ByteReader(enum Endianness endianness);
+ virtual ~ByteReader();
+
+ // Read a single byte from BUFFER and return it as an unsigned 8 bit
+ // number.
+ uint8 ReadOneByte(const char* buffer) const;
+
+ // Read two bytes from BUFFER and return them as an unsigned 16 bit
+ // number, using this ByteReader's endianness.
+ uint16 ReadTwoBytes(const char* buffer) const;
+
+ // Read four bytes from BUFFER and return them as an unsigned 32 bit
+ // number, using this ByteReader's endianness. This function returns
+ // a uint64 so that it is compatible with ReadAddress and
+ // ReadOffset. The number it returns will never be outside the range
+ // of an unsigned 32 bit integer.
+ uint64 ReadFourBytes(const char* buffer) const;
+
+ // Read eight bytes from BUFFER and return them as an unsigned 64
+ // bit number, using this ByteReader's endianness.
+ uint64 ReadEightBytes(const char* buffer) const;
+
+ // Read an unsigned LEB128 (Little Endian Base 128) number from
+ // BUFFER and return it as an unsigned 64 bit integer. Set LEN to
+ // the number of bytes read.
+ //
+ // The unsigned LEB128 representation of an integer N is a variable
+ // number of bytes:
+ //
+ // - If N is between 0 and 0x7f, then its unsigned LEB128
+ // representation is a single byte whose value is N.
+ //
+ // - Otherwise, its unsigned LEB128 representation is (N & 0x7f) |
+ // 0x80, followed by the unsigned LEB128 representation of N /
+ // 128, rounded towards negative infinity.
+ //
+ // In other words, we break VALUE into groups of seven bits, put
+ // them in little-endian order, and then write them as eight-bit
+ // bytes with the high bit on all but the last.
+ uint64 ReadUnsignedLEB128(const char* buffer, size_t* len) const;
+
+ // Read a signed LEB128 number from BUFFER and return it as an
+ // signed 64 bit integer. Set LEN to the number of bytes read.
+ //
+ // The signed LEB128 representation of an integer N is a variable
+ // number of bytes:
+ //
+ // - If N is between -0x40 and 0x3f, then its signed LEB128
+ // representation is a single byte whose value is N in two's
+ // complement.
+ //
+ // - Otherwise, its signed LEB128 representation is (N & 0x7f) |
+ // 0x80, followed by the signed LEB128 representation of N / 128,
+ // rounded towards negative infinity.
+ //
+ // In other words, we break VALUE into groups of seven bits, put
+ // them in little-endian order, and then write them as eight-bit
+ // bytes with the high bit on all but the last.
+ int64 ReadSignedLEB128(const char* buffer, size_t* len) const;
+
+ // Indicate that addresses on this architecture are SIZE bytes long. SIZE
+ // must be either 4 or 8. (DWARF allows addresses to be any number of
+ // bytes in length from 1 to 255, but we only support 32- and 64-bit
+ // addresses at the moment.) You must call this before using the
+ // ReadAddress member function.
+ //
+ // For data in a .debug_info section, or something that .debug_info
+ // refers to like line number or macro data, the compilation unit
+ // header's address_size field indicates the address size to use. Call
+ // frame information doesn't indicate its address size (a shortcoming of
+ // the spec); you must supply the appropriate size based on the
+ // architecture of the target machine.
+ void SetAddressSize(uint8 size);
+
+ // Return the current address size, in bytes. This is either 4,
+ // indicating 32-bit addresses, or 8, indicating 64-bit addresses.
+ uint8 AddressSize() const { return address_size_; }
+
+ // Read an address from BUFFER and return it as an unsigned 64 bit
+ // integer, respecting this ByteReader's endianness and address size. You
+ // must call SetAddressSize before calling this function.
+ uint64 ReadAddress(const char* buffer) const;
+
+ // DWARF actually defines two slightly different formats: 32-bit DWARF
+ // and 64-bit DWARF. This is *not* related to the size of registers or
+ // addresses on the target machine; it refers only to the size of section
+ // offsets and data lengths appearing in the DWARF data. One only needs
+ // 64-bit DWARF when the debugging data itself is larger than 4GiB.
+ // 32-bit DWARF can handle x86_64 or PPC64 code just fine, unless the
+ // debugging data itself is very large.
+ //
+ // DWARF information identifies itself as 32-bit or 64-bit DWARF: each
+ // compilation unit and call frame information entry begins with an
+ // "initial length" field, which, in addition to giving the length of the
+ // data, also indicates the size of section offsets and lengths appearing
+ // in that data. The ReadInitialLength member function, below, reads an
+ // initial length and sets the ByteReader's offset size as a side effect.
+ // Thus, in the normal process of reading DWARF data, the appropriate
+ // offset size is set automatically. So, you should only need to call
+ // SetOffsetSize if you are using the same ByteReader to jump from the
+ // midst of one block of DWARF data into another.
+
+ // Read a DWARF "initial length" field from START, and return it as
+ // an unsigned 64 bit integer, respecting this ByteReader's
+ // endianness. Set *LEN to the length of the initial length in
+ // bytes, either four or twelve. As a side effect, set this
+ // ByteReader's offset size to either 4 (if we see a 32-bit DWARF
+ // initial length) or 8 (if we see a 64-bit DWARF initial length).
+ //
+ // A DWARF initial length is either:
+ //
+ // - a byte count stored as an unsigned 32-bit value less than
+ // 0xffffff00, indicating that the data whose length is being
+ // measured uses the 32-bit DWARF format, or
+ //
+ // - The 32-bit value 0xffffffff, followed by a 64-bit byte count,
+ // indicating that the data whose length is being measured uses
+ // the 64-bit DWARF format.
+ uint64 ReadInitialLength(const char* start, size_t* len);
+
+ // Read an offset from BUFFER and return it as an unsigned 64 bit
+ // integer, respecting the ByteReader's endianness. In 32-bit DWARF, the
+ // offset is 4 bytes long; in 64-bit DWARF, the offset is eight bytes
+ // long. You must call ReadInitialLength or SetOffsetSize before calling
+ // this function; see the comments above for details.
+ uint64 ReadOffset(const char* buffer) const;
+
+ // Return the current offset size, in bytes.
+ // A return value of 4 indicates that we are reading 32-bit DWARF.
+ // A return value of 8 indicates that we are reading 64-bit DWARF.
+ uint8 OffsetSize() const { return offset_size_; }
+
+ // Indicate that section offsets and lengths are SIZE bytes long. SIZE
+ // must be either 4 (meaning 32-bit DWARF) or 8 (meaning 64-bit DWARF).
+ // Usually, you should not call this function yourself; instead, let a
+ // call to ReadInitialLength establish the data's offset size
+ // automatically.
+ void SetOffsetSize(uint8 size);
+
+ // The Linux C++ ABI uses a variant of DWARF call frame information
+ // for exception handling. This data is included in the program's
+ // address space as the ".eh_frame" section, and intepreted at
+ // runtime to walk the stack, find exception handlers, and run
+ // cleanup code. The format is mostly the same as DWARF CFI, with
+ // some adjustments made to provide the additional
+ // exception-handling data, and to make the data easier to work with
+ // in memory --- for example, to allow it to be placed in read-only
+ // memory even when describing position-independent code.
+ //
+ // In particular, exception handling data can select a number of
+ // different encodings for pointers that appear in the data, as
+ // described by the DwarfPointerEncoding enum. There are actually
+ // four axes(!) to the encoding:
+ //
+ // - The pointer size: pointers can be 2, 4, or 8 bytes long, or use
+ // the DWARF LEB128 encoding.
+ //
+ // - The pointer's signedness: pointers can be signed or unsigned.
+ //
+ // - The pointer's base address: the data stored in the exception
+ // handling data can be the actual address (that is, an absolute
+ // pointer), or relative to one of a number of different base
+ // addreses --- including that of the encoded pointer itself, for
+ // a form of "pc-relative" addressing.
+ //
+ // - The pointer may be indirect: it may be the address where the
+ // true pointer is stored. (This is used to refer to things via
+ // global offset table entries, program linkage table entries, or
+ // other tricks used in position-independent code.)
+ //
+ // There are also two options that fall outside that matrix
+ // altogether: the pointer may be omitted, or it may have padding to
+ // align it on an appropriate address boundary. (That last option
+ // may seem like it should be just another axis, but it is not.)
+
+ // Indicate that the exception handling data is loaded starting at
+ // SECTION_BASE, and that the start of its buffer in our own memory
+ // is BUFFER_BASE. This allows us to find the address that a given
+ // byte in our buffer would have when loaded into the program the
+ // data describes. We need this to resolve DW_EH_PE_pcrel pointers.
+ void SetCFIDataBase(uint64 section_base, const char* buffer_base);
+
+ // Indicate that the base address of the program's ".text" section
+ // is TEXT_BASE. We need this to resolve DW_EH_PE_textrel pointers.
+ void SetTextBase(uint64 text_base);
+
+ // Indicate that the base address for DW_EH_PE_datarel pointers is
+ // DATA_BASE. The proper value depends on the ABI; it is usually the
+ // address of the global offset table, held in a designated register in
+ // position-independent code. You will need to look at the startup code
+ // for the target system to be sure. I tried; my eyes bled.
+ void SetDataBase(uint64 data_base);
+
+ // Indicate that the base address for the FDE we are processing is
+ // FUNCTION_BASE. This is the start address of DW_EH_PE_funcrel
+ // pointers. (This encoding does not seem to be used by the GNU
+ // toolchain.)
+ void SetFunctionBase(uint64 function_base);
+
+ // Indicate that we are no longer processing any FDE, so any use of
+ // a DW_EH_PE_funcrel encoding is an error.
+ void ClearFunctionBase();
+
+ // Return true if ENCODING is a valid pointer encoding.
+ bool ValidEncoding(DwarfPointerEncoding encoding) const;
+
+ // Return true if we have all the information we need to read a
+ // pointer that uses ENCODING. This checks that the appropriate
+ // SetFooBase function for ENCODING has been called.
+ bool UsableEncoding(DwarfPointerEncoding encoding) const;
+
+ // Read an encoded pointer from BUFFER using ENCODING; return the
+ // absolute address it represents, and set *LEN to the pointer's
+ // length in bytes, including any padding for aligned pointers.
+ //
+ // This function calls 'abort' if ENCODING is invalid or refers to a
+ // base address this reader hasn't been given, so you should check
+ // with ValidEncoding and UsableEncoding first if you would rather
+ // die in a more helpful way.
+ uint64 ReadEncodedPointer(const char* buffer, DwarfPointerEncoding encoding,
+ size_t* len) const;
+
+ private:
+ // Function pointer type for our address and offset readers.
+ typedef uint64 (ByteReader::*AddressReader)(const char*) const;
+
+ // Read an offset from BUFFER and return it as an unsigned 64 bit
+ // integer. DWARF2/3 define offsets as either 4 or 8 bytes,
+ // generally depending on the amount of DWARF2/3 info present.
+ // This function pointer gets set by SetOffsetSize.
+ AddressReader offset_reader_;
+
+ // Read an address from BUFFER and return it as an unsigned 64 bit
+ // integer. DWARF2/3 allow addresses to be any size from 0-255
+ // bytes currently. Internally we support 4 and 8 byte addresses,
+ // and will CHECK on anything else.
+ // This function pointer gets set by SetAddressSize.
+ AddressReader address_reader_;
+
+ Endianness endian_;
+ uint8 address_size_;
+ uint8 offset_size_;
+
+ // Base addresses for Linux C++ exception handling data's encoded pointers.
+ bool have_section_base_, have_text_base_, have_data_base_;
+ bool have_function_base_;
+ uint64 section_base_;
+ uint64 text_base_, data_base_, function_base_;
+ const char* buffer_base_;
+};
+
+inline uint8 ByteReader::ReadOneByte(const char* buffer) const {
+ return buffer[0];
+}
+
+inline uint16 ByteReader::ReadTwoBytes(const char* signed_buffer) const {
+ const unsigned char* buffer =
+ reinterpret_cast<const unsigned char*>(signed_buffer);
+ const uint16 buffer0 = buffer[0];
+ const uint16 buffer1 = buffer[1];
+ if (endian_ == ENDIANNESS_LITTLE) {
+ return buffer0 | buffer1 << 8;
+ } else {
+ return buffer1 | buffer0 << 8;
+ }
+}
+
+inline uint64 ByteReader::ReadFourBytes(const char* signed_buffer) const {
+ const unsigned char* buffer =
+ reinterpret_cast<const unsigned char*>(signed_buffer);
+ const uint32 buffer0 = buffer[0];
+ const uint32 buffer1 = buffer[1];
+ const uint32 buffer2 = buffer[2];
+ const uint32 buffer3 = buffer[3];
+ if (endian_ == ENDIANNESS_LITTLE) {
+ return buffer0 | buffer1 << 8 | buffer2 << 16 | buffer3 << 24;
+ } else {
+ return buffer3 | buffer2 << 8 | buffer1 << 16 | buffer0 << 24;
+ }
+}
+
+inline uint64 ByteReader::ReadEightBytes(const char* signed_buffer) const {
+ const unsigned char* buffer =
+ reinterpret_cast<const unsigned char*>(signed_buffer);
+ const uint64 buffer0 = buffer[0];
+ const uint64 buffer1 = buffer[1];
+ const uint64 buffer2 = buffer[2];
+ const uint64 buffer3 = buffer[3];
+ const uint64 buffer4 = buffer[4];
+ const uint64 buffer5 = buffer[5];
+ const uint64 buffer6 = buffer[6];
+ const uint64 buffer7 = buffer[7];
+ if (endian_ == ENDIANNESS_LITTLE) {
+ return buffer0 | buffer1 << 8 | buffer2 << 16 | buffer3 << 24 |
+ buffer4 << 32 | buffer5 << 40 | buffer6 << 48 | buffer7 << 56;
+ } else {
+ return buffer7 | buffer6 << 8 | buffer5 << 16 | buffer4 << 24 |
+ buffer3 << 32 | buffer2 << 40 | buffer1 << 48 | buffer0 << 56;
+ }
+}
+
+// Read an unsigned LEB128 number. Each byte contains 7 bits of
+// information, plus one bit saying whether the number continues or
+// not.
+
+inline uint64 ByteReader::ReadUnsignedLEB128(const char* buffer,
+ size_t* len) const {
+ uint64 result = 0;
+ size_t num_read = 0;
+ unsigned int shift = 0;
+ unsigned char byte;
+
+ do {
+ byte = *buffer++;
+ num_read++;
+
+ result |= (static_cast<uint64>(byte & 0x7f)) << shift;
+
+ shift += 7;
+
+ } while (byte & 0x80);
+
+ *len = num_read;
+
+ return result;
+}
+
+// Read a signed LEB128 number. These are like regular LEB128
+// numbers, except the last byte may have a sign bit set.
+
+inline int64 ByteReader::ReadSignedLEB128(const char* buffer,
+ size_t* len) const {
+ int64 result = 0;
+ unsigned int shift = 0;
+ size_t num_read = 0;
+ unsigned char byte;
+
+ do {
+ byte = *buffer++;
+ num_read++;
+ result |= (static_cast<uint64>(byte & 0x7f) << shift);
+ shift += 7;
+ } while (byte & 0x80);
+
+ if ((shift < 8 * sizeof(result)) && (byte & 0x40))
+ result |= -((static_cast<int64>(1)) << shift);
+ *len = num_read;
+ return result;
+}
+
+inline uint64 ByteReader::ReadOffset(const char* buffer) const {
+ MOZ_ASSERT(this->offset_reader_);
+ return (this->*offset_reader_)(buffer);
+}
+
+inline uint64 ByteReader::ReadAddress(const char* buffer) const {
+ MOZ_ASSERT(this->address_reader_);
+ return (this->*address_reader_)(buffer);
+}
+
+inline void ByteReader::SetCFIDataBase(uint64 section_base,
+ const char* buffer_base) {
+ section_base_ = section_base;
+ buffer_base_ = buffer_base;
+ have_section_base_ = true;
+}
+
+inline void ByteReader::SetTextBase(uint64 text_base) {
+ text_base_ = text_base;
+ have_text_base_ = true;
+}
+
+inline void ByteReader::SetDataBase(uint64 data_base) {
+ data_base_ = data_base;
+ have_data_base_ = true;
+}
+
+inline void ByteReader::SetFunctionBase(uint64 function_base) {
+ function_base_ = function_base;
+ have_function_base_ = true;
+}
+
+inline void ByteReader::ClearFunctionBase() { have_function_base_ = false; }
+
+// (derived from)
+// dwarf_cfi_to_module.h: Define the DwarfCFIToModule class, which
+// accepts parsed DWARF call frame info and adds it to a Summariser object.
+
+// This class is a reader for DWARF's Call Frame Information. CFI
+// describes how to unwind stack frames --- even for functions that do
+// not follow fixed conventions for saving registers, whose frame size
+// varies as they execute, etc.
+//
+// CFI describes, at each machine instruction, how to compute the
+// stack frame's base address, how to find the return address, and
+// where to find the saved values of the caller's registers (if the
+// callee has stashed them somewhere to free up the registers for its
+// own use).
+//
+// For example, suppose we have a function whose machine code looks
+// like this (imagine an assembly language that looks like C, for a
+// machine with 32-bit registers, and a stack that grows towards lower
+// addresses):
+//
+// func: ; entry point; return address at sp
+// func+0: sp = sp - 16 ; allocate space for stack frame
+// func+1: sp[12] = r0 ; save r0 at sp+12
+// ... ; other code, not frame-related
+// func+10: sp -= 4; *sp = x ; push some x on the stack
+// ... ; other code, not frame-related
+// func+20: r0 = sp[16] ; restore saved r0
+// func+21: sp += 20 ; pop whole stack frame
+// func+22: pc = *sp; sp += 4 ; pop return address and jump to it
+//
+// DWARF CFI is (a very compressed representation of) a table with a
+// row for each machine instruction address and a column for each
+// register showing how to restore it, if possible.
+//
+// A special column named "CFA", for "Canonical Frame Address", tells how
+// to compute the base address of the frame; registers' entries may
+// refer to the CFA in describing where the registers are saved.
+//
+// Another special column, named "RA", represents the return address.
+//
+// For example, here is a complete (uncompressed) table describing the
+// function above:
+//
+// insn cfa r0 r1 ... ra
+// =======================================
+// func+0: sp cfa[0]
+// func+1: sp+16 cfa[0]
+// func+2: sp+16 cfa[-4] cfa[0]
+// func+11: sp+20 cfa[-4] cfa[0]
+// func+21: sp+20 cfa[0]
+// func+22: sp cfa[0]
+//
+// Some things to note here:
+//
+// - Each row describes the state of affairs *before* executing the
+// instruction at the given address. Thus, the row for func+0
+// describes the state before we allocate the stack frame. In the
+// next row, the formula for computing the CFA has changed,
+// reflecting that allocation.
+//
+// - The other entries are written in terms of the CFA; this allows
+// them to remain unchanged as the stack pointer gets bumped around.
+// For example, the rule for recovering the return address (the "ra"
+// column) remains unchanged throughout the function, even as the
+// stack pointer takes on three different offsets from the return
+// address.
+//
+// - Although we haven't shown it, most calling conventions designate
+// "callee-saves" and "caller-saves" registers. The callee must
+// preserve the values of callee-saves registers; if it uses them,
+// it must save their original values somewhere, and restore them
+// before it returns. In contrast, the callee is free to trash
+// caller-saves registers; if the callee uses these, it will
+// probably not bother to save them anywhere, and the CFI will
+// probably mark their values as "unrecoverable".
+//
+// (However, since the caller cannot assume the callee was going to
+// save them, caller-saves registers are probably dead in the caller
+// anyway, so compilers usually don't generate CFA for caller-saves
+// registers.)
+//
+// - Exactly where the CFA points is a matter of convention that
+// depends on the architecture and ABI in use. In the example, the
+// CFA is the value the stack pointer had upon entry to the
+// function, pointing at the saved return address. But on the x86,
+// the call frame information generated by GCC follows the
+// convention that the CFA is the address *after* the saved return
+// address.
+//
+// But by definition, the CFA remains constant throughout the
+// lifetime of the frame. This makes it a useful value for other
+// columns to refer to. It is also gives debuggers a useful handle
+// for identifying a frame.
+//
+// If you look at the table above, you'll notice that a given entry is
+// often the same as the one immediately above it: most instructions
+// change only one or two aspects of the stack frame, if they affect
+// it at all. The DWARF format takes advantage of this fact, and
+// reduces the size of the data by mentioning only the addresses and
+// columns at which changes take place. So for the above, DWARF CFI
+// data would only actually mention the following:
+//
+// insn cfa r0 r1 ... ra
+// =======================================
+// func+0: sp cfa[0]
+// func+1: sp+16
+// func+2: cfa[-4]
+// func+11: sp+20
+// func+21: r0
+// func+22: sp
+//
+// In fact, this is the way the parser reports CFI to the consumer: as
+// a series of statements of the form, "At address X, column Y changed
+// to Z," and related conventions for describing the initial state.
+//
+// Naturally, it would be impractical to have to scan the entire
+// program's CFI, noting changes as we go, just to recover the
+// unwinding rules in effect at one particular instruction. To avoid
+// this, CFI data is grouped into "entries", each of which covers a
+// specified range of addresses and begins with a complete statement
+// of the rules for all recoverable registers at that starting
+// address. Each entry typically covers a single function.
+//
+// Thus, to compute the contents of a given row of the table --- that
+// is, rules for recovering the CFA, RA, and registers at a given
+// instruction --- the consumer should find the entry that covers that
+// instruction's address, start with the initial state supplied at the
+// beginning of the entry, and work forward until it has processed all
+// the changes up to and including those for the present instruction.
+//
+// There are seven kinds of rules that can appear in an entry of the
+// table:
+//
+// - "undefined": The given register is not preserved by the callee;
+// its value cannot be recovered.
+//
+// - "same value": This register has the same value it did in the callee.
+//
+// - offset(N): The register is saved at offset N from the CFA.
+//
+// - val_offset(N): The value the register had in the caller is the
+// CFA plus offset N. (This is usually only useful for describing
+// the stack pointer.)
+//
+// - register(R): The register's value was saved in another register R.
+//
+// - expression(E): Evaluating the DWARF expression E using the
+// current frame's registers' values yields the address at which the
+// register was saved.
+//
+// - val_expression(E): Evaluating the DWARF expression E using the
+// current frame's registers' values yields the value the register
+// had in the caller.
+
+class CallFrameInfo {
+ public:
+ // The different kinds of entries one finds in CFI. Used internally,
+ // and for error reporting.
+ enum EntryKind { kUnknown, kCIE, kFDE, kTerminator };
+
+ // The handler class to which the parser hands the parsed call frame
+ // information. Defined below.
+ class Handler;
+
+ // A reporter class, which CallFrameInfo uses to report errors
+ // encountered while parsing call frame information. Defined below.
+ class Reporter;
+
+ // Create a DWARF CFI parser. BUFFER points to the contents of the
+ // .debug_frame section to parse; BUFFER_LENGTH is its length in bytes.
+ // REPORTER is an error reporter the parser should use to report
+ // problems. READER is a ByteReader instance that has the endianness and
+ // address size set properly. Report the data we find to HANDLER.
+ //
+ // This class can also parse Linux C++ exception handling data, as found
+ // in '.eh_frame' sections. This data is a variant of DWARF CFI that is
+ // placed in loadable segments so that it is present in the program's
+ // address space, and is interpreted by the C++ runtime to search the
+ // call stack for a handler interested in the exception being thrown,
+ // actually pop the frames, and find cleanup code to run.
+ //
+ // There are two differences between the call frame information described
+ // in the DWARF standard and the exception handling data Linux places in
+ // the .eh_frame section:
+ //
+ // - Exception handling data uses uses a different format for call frame
+ // information entry headers. The distinguished CIE id, the way FDEs
+ // refer to their CIEs, and the way the end of the series of entries is
+ // determined are all slightly different.
+ //
+ // If the constructor's EH_FRAME argument is true, then the
+ // CallFrameInfo parses the entry headers as Linux C++ exception
+ // handling data. If EH_FRAME is false or omitted, the CallFrameInfo
+ // parses standard DWARF call frame information.
+ //
+ // - Linux C++ exception handling data uses CIE augmentation strings
+ // beginning with 'z' to specify the presence of additional data after
+ // the CIE and FDE headers and special encodings used for addresses in
+ // frame description entries.
+ //
+ // CallFrameInfo can handle 'z' augmentations in either DWARF CFI or
+ // exception handling data if you have supplied READER with the base
+ // addresses needed to interpret the pointer encodings that 'z'
+ // augmentations can specify. See the ByteReader interface for details
+ // about the base addresses. See the CallFrameInfo::Handler interface
+ // for details about the additional information one might find in
+ // 'z'-augmented data.
+ //
+ // Thus:
+ //
+ // - If you are parsing standard DWARF CFI, as found in a .debug_frame
+ // section, you should pass false for the EH_FRAME argument, or omit
+ // it, and you need not worry about providing READER with the
+ // additional base addresses.
+ //
+ // - If you want to parse Linux C++ exception handling data from a
+ // .eh_frame section, you should pass EH_FRAME as true, and call
+ // READER's Set*Base member functions before calling our Start method.
+ //
+ // - If you want to parse DWARF CFI that uses the 'z' augmentations
+ // (although I don't think any toolchain ever emits such data), you
+ // could pass false for EH_FRAME, but call READER's Set*Base members.
+ //
+ // The extensions the Linux C++ ABI makes to DWARF for exception
+ // handling are described here, rather poorly:
+ // http://refspecs.linux-foundation.org/LSB_4.0.0/LSB-Core-generic/LSB-Core-generic/dwarfext.html
+ // http://refspecs.linux-foundation.org/LSB_4.0.0/LSB-Core-generic/LSB-Core-generic/ehframechpt.html
+ //
+ // The mechanics of C++ exception handling, personality routines,
+ // and language-specific data areas are described here, rather nicely:
+ // http://www.codesourcery.com/public/cxx-abi/abi-eh.html
+
+ CallFrameInfo(const char* buffer, size_t buffer_length, ByteReader* reader,
+ Handler* handler, Reporter* reporter, bool eh_frame = false)
+ : buffer_(buffer),
+ buffer_length_(buffer_length),
+ reader_(reader),
+ handler_(handler),
+ reporter_(reporter),
+ eh_frame_(eh_frame) {}
+
+ ~CallFrameInfo() {}
+
+ // Parse the entries in BUFFER, reporting what we find to HANDLER.
+ // Return true if we reach the end of the section successfully, or
+ // false if we encounter an error.
+ bool Start();
+
+ // Return the textual name of KIND. For error reporting.
+ static const char* KindName(EntryKind kind);
+
+ private:
+ struct CIE;
+
+ // A CFI entry, either an FDE or a CIE.
+ struct Entry {
+ // The starting offset of the entry in the section, for error
+ // reporting.
+ size_t offset;
+
+ // The start of this entry in the buffer.
+ const char* start;
+
+ // Which kind of entry this is.
+ //
+ // We want to be able to use this for error reporting even while we're
+ // in the midst of parsing. Error reporting code may assume that kind,
+ // offset, and start fields are valid, although kind may be kUnknown.
+ EntryKind kind;
+
+ // The end of this entry's common prologue (initial length and id), and
+ // the start of this entry's kind-specific fields.
+ const char* fields;
+
+ // The start of this entry's instructions.
+ const char* instructions;
+
+ // The address past the entry's last byte in the buffer. (Note that
+ // since offset points to the entry's initial length field, and the
+ // length field is the number of bytes after that field, this is not
+ // simply buffer_ + offset + length.)
+ const char* end;
+
+ // For both DWARF CFI and .eh_frame sections, this is the CIE id in a
+ // CIE, and the offset of the associated CIE in an FDE.
+ uint64 id;
+
+ // The CIE that applies to this entry, if we've parsed it. If this is a
+ // CIE, then this field points to this structure.
+ CIE* cie;
+ };
+
+ // A common information entry (CIE).
+ struct CIE : public Entry {
+ uint8 version; // CFI data version number
+ std::string augmentation; // vendor format extension markers
+ uint64 code_alignment_factor; // scale for code address adjustments
+ int data_alignment_factor; // scale for stack pointer adjustments
+ unsigned return_address_register; // which register holds the return addr
+
+ // True if this CIE includes Linux C++ ABI 'z' augmentation data.
+ bool has_z_augmentation;
+
+ // Parsed 'z' augmentation data. These are meaningful only if
+ // has_z_augmentation is true.
+ bool has_z_lsda; // The 'z' augmentation included 'L'.
+ bool has_z_personality; // The 'z' augmentation included 'P'.
+ bool has_z_signal_frame; // The 'z' augmentation included 'S'.
+
+ // If has_z_lsda is true, this is the encoding to be used for language-
+ // specific data area pointers in FDEs.
+ DwarfPointerEncoding lsda_encoding;
+
+ // If has_z_personality is true, this is the encoding used for the
+ // personality routine pointer in the augmentation data.
+ DwarfPointerEncoding personality_encoding;
+
+ // If has_z_personality is true, this is the address of the personality
+ // routine --- or, if personality_encoding & DW_EH_PE_indirect, the
+ // address where the personality routine's address is stored.
+ uint64 personality_address;
+
+ // This is the encoding used for addresses in the FDE header and
+ // in DW_CFA_set_loc instructions. This is always valid, whether
+ // or not we saw a 'z' augmentation string; its default value is
+ // DW_EH_PE_absptr, which is what normal DWARF CFI uses.
+ DwarfPointerEncoding pointer_encoding;
+ };
+
+ // A frame description entry (FDE).
+ struct FDE : public Entry {
+ uint64 address; // start address of described code
+ uint64 size; // size of described code, in bytes
+
+ // If cie->has_z_lsda is true, then this is the language-specific data
+ // area's address --- or its address's address, if cie->lsda_encoding
+ // has the DW_EH_PE_indirect bit set.
+ uint64 lsda_address;
+ };
+
+ // Internal use.
+ class Rule;
+ class RuleMapLowLevel;
+ class RuleMap;
+ class State;
+
+ // Parse the initial length and id of a CFI entry, either a CIE, an FDE,
+ // or a .eh_frame end-of-data mark. CURSOR points to the beginning of the
+ // data to parse. On success, populate ENTRY as appropriate, and return
+ // true. On failure, report the problem, and return false. Even if we
+ // return false, set ENTRY->end to the first byte after the entry if we
+ // were able to figure that out, or NULL if we weren't.
+ bool ReadEntryPrologue(const char* cursor, Entry* entry);
+
+ // Parse the fields of a CIE after the entry prologue, including any 'z'
+ // augmentation data. Assume that the 'Entry' fields of CIE are
+ // populated; use CIE->fields and CIE->end as the start and limit for
+ // parsing. On success, populate the rest of *CIE, and return true; on
+ // failure, report the problem and return false.
+ bool ReadCIEFields(CIE* cie);
+
+ // Parse the fields of an FDE after the entry prologue, including any 'z'
+ // augmentation data. Assume that the 'Entry' fields of *FDE are
+ // initialized; use FDE->fields and FDE->end as the start and limit for
+ // parsing. Assume that FDE->cie is fully initialized. On success,
+ // populate the rest of *FDE, and return true; on failure, report the
+ // problem and return false.
+ bool ReadFDEFields(FDE* fde);
+
+ // Report that ENTRY is incomplete, and return false. This is just a
+ // trivial wrapper for invoking reporter_->Incomplete; it provides a
+ // little brevity.
+ bool ReportIncomplete(Entry* entry);
+
+ // Return true if ENCODING has the DW_EH_PE_indirect bit set.
+ static bool IsIndirectEncoding(DwarfPointerEncoding encoding) {
+ return encoding & DW_EH_PE_indirect;
+ }
+
+ // The contents of the DWARF .debug_info section we're parsing.
+ const char* buffer_;
+ size_t buffer_length_;
+
+ // For reading multi-byte values with the appropriate endianness.
+ ByteReader* reader_;
+
+ // The handler to which we should report the data we find.
+ Handler* handler_;
+
+ // For reporting problems in the info we're parsing.
+ Reporter* reporter_;
+
+ // True if we are processing .eh_frame-format data.
+ bool eh_frame_;
+};
+
+// The handler class for CallFrameInfo. The a CFI parser calls the
+// member functions of a handler object to report the data it finds.
+class CallFrameInfo::Handler {
+ public:
+ // The pseudo-register number for the canonical frame address.
+ enum { kCFARegister = DW_REG_CFA };
+
+ Handler() {}
+ virtual ~Handler() {}
+
+ // The parser has found CFI for the machine code at ADDRESS,
+ // extending for LENGTH bytes. OFFSET is the offset of the frame
+ // description entry in the section, for use in error messages.
+ // VERSION is the version number of the CFI format. AUGMENTATION is
+ // a string describing any producer-specific extensions present in
+ // the data. RETURN_ADDRESS is the number of the register that holds
+ // the address to which the function should return.
+ //
+ // Entry should return true to process this CFI, or false to skip to
+ // the next entry.
+ //
+ // The parser invokes Entry for each Frame Description Entry (FDE)
+ // it finds. The parser doesn't report Common Information Entries
+ // to the handler explicitly; instead, if the handler elects to
+ // process a given FDE, the parser reiterates the appropriate CIE's
+ // contents at the beginning of the FDE's rules.
+ virtual bool Entry(size_t offset, uint64 address, uint64 length,
+ uint8 version, const std::string& augmentation,
+ unsigned return_address) = 0;
+
+ // When the Entry function returns true, the parser calls these
+ // handler functions repeatedly to describe the rules for recovering
+ // registers at each instruction in the given range of machine code.
+ // Immediately after a call to Entry, the handler should assume that
+ // the rule for each callee-saves register is "unchanged" --- that
+ // is, that the register still has the value it had in the caller.
+ //
+ // If a *Rule function returns true, we continue processing this entry's
+ // instructions. If a *Rule function returns false, we stop evaluating
+ // instructions, and skip to the next entry. Either way, we call End
+ // before going on to the next entry.
+ //
+ // In all of these functions, if the REG parameter is kCFARegister, then
+ // the rule describes how to find the canonical frame address.
+ // kCFARegister may be passed as a BASE_REGISTER argument, meaning that
+ // the canonical frame address should be used as the base address for the
+ // computation. All other REG values will be positive.
+
+ // At ADDRESS, register REG's value is not recoverable.
+ virtual bool UndefinedRule(uint64 address, int reg) = 0;
+
+ // At ADDRESS, register REG's value is the same as that it had in
+ // the caller.
+ virtual bool SameValueRule(uint64 address, int reg) = 0;
+
+ // At ADDRESS, register REG has been saved at offset OFFSET from
+ // BASE_REGISTER.
+ virtual bool OffsetRule(uint64 address, int reg, int base_register,
+ long offset) = 0;
+
+ // At ADDRESS, the caller's value of register REG is the current
+ // value of BASE_REGISTER plus OFFSET. (This rule doesn't provide an
+ // address at which the register's value is saved.)
+ virtual bool ValOffsetRule(uint64 address, int reg, int base_register,
+ long offset) = 0;
+
+ // At ADDRESS, register REG has been saved in BASE_REGISTER. This differs
+ // from ValOffsetRule(ADDRESS, REG, BASE_REGISTER, 0), in that
+ // BASE_REGISTER is the "home" for REG's saved value: if you want to
+ // assign to a variable whose home is REG in the calling frame, you
+ // should put the value in BASE_REGISTER.
+ virtual bool RegisterRule(uint64 address, int reg, int base_register) = 0;
+
+ // At ADDRESS, the DWARF expression EXPRESSION yields the address at
+ // which REG was saved.
+ virtual bool ExpressionRule(uint64 address, int reg,
+ const ImageSlice& expression) = 0;
+
+ // At ADDRESS, the DWARF expression EXPRESSION yields the caller's
+ // value for REG. (This rule doesn't provide an address at which the
+ // register's value is saved.)
+ virtual bool ValExpressionRule(uint64 address, int reg,
+ const ImageSlice& expression) = 0;
+
+ // Indicate that the rules for the address range reported by the
+ // last call to Entry are complete. End should return true if
+ // everything is okay, or false if an error has occurred and parsing
+ // should stop.
+ virtual bool End() = 0;
+
+ // Handler functions for Linux C++ exception handling data. These are
+ // only called if the data includes 'z' augmentation strings.
+
+ // The Linux C++ ABI uses an extension of the DWARF CFI format to
+ // walk the stack to propagate exceptions from the throw to the
+ // appropriate catch, and do the appropriate cleanups along the way.
+ // CFI entries used for exception handling have two additional data
+ // associated with them:
+ //
+ // - The "language-specific data area" describes which exception
+ // types the function has 'catch' clauses for, and indicates how
+ // to go about re-entering the function at the appropriate catch
+ // clause. If the exception is not caught, it describes the
+ // destructors that must run before the frame is popped.
+ //
+ // - The "personality routine" is responsible for interpreting the
+ // language-specific data area's contents, and deciding whether
+ // the exception should continue to propagate down the stack,
+ // perhaps after doing some cleanup for this frame, or whether the
+ // exception will be caught here.
+ //
+ // In principle, the language-specific data area is opaque to
+ // everybody but the personality routine. In practice, these values
+ // may be useful or interesting to readers with extra context, and
+ // we have to at least skip them anyway, so we might as well report
+ // them to the handler.
+
+ // This entry's exception handling personality routine's address is
+ // ADDRESS. If INDIRECT is true, then ADDRESS is the address at
+ // which the routine's address is stored. The default definition for
+ // this handler function simply returns true, allowing parsing of
+ // the entry to continue.
+ virtual bool PersonalityRoutine(uint64 address, bool indirect) {
+ return true;
+ }
+
+ // This entry's language-specific data area (LSDA) is located at
+ // ADDRESS. If INDIRECT is true, then ADDRESS is the address at
+ // which the area's address is stored. The default definition for
+ // this handler function simply returns true, allowing parsing of
+ // the entry to continue.
+ virtual bool LanguageSpecificDataArea(uint64 address, bool indirect) {
+ return true;
+ }
+
+ // This entry describes a signal trampoline --- this frame is the
+ // caller of a signal handler. The default definition for this
+ // handler function simply returns true, allowing parsing of the
+ // entry to continue.
+ //
+ // The best description of the rationale for and meaning of signal
+ // trampoline CFI entries seems to be in the GCC bug database:
+ // http://gcc.gnu.org/bugzilla/show_bug.cgi?id=26208
+ virtual bool SignalHandler() { return true; }
+};
+
+// The CallFrameInfo class makes calls on an instance of this class to
+// report errors or warn about problems in the data it is parsing.
+// These messages are sent to the message sink |aLog| provided to the
+// constructor.
+class CallFrameInfo::Reporter {
+ public:
+ // Create an error reporter which attributes troubles to the section
+ // named SECTION in FILENAME.
+ //
+ // Normally SECTION would be .debug_frame, but the Mac puts CFI data
+ // in a Mach-O section named __debug_frame. If we support
+ // Linux-style exception handling data, we could be reading an
+ // .eh_frame section.
+ Reporter(void (*aLog)(const char*), const std::string& filename,
+ const std::string& section = ".debug_frame")
+ : log_(aLog), filename_(filename), section_(section) {}
+ virtual ~Reporter() {}
+
+ // The CFI entry at OFFSET ends too early to be well-formed. KIND
+ // indicates what kind of entry it is; KIND can be kUnknown if we
+ // haven't parsed enough of the entry to tell yet.
+ virtual void Incomplete(uint64 offset, CallFrameInfo::EntryKind kind);
+
+ // The .eh_frame data has a four-byte zero at OFFSET where the next
+ // entry's length would be; this is a terminator. However, the buffer
+ // length as given to the CallFrameInfo constructor says there should be
+ // more data.
+ virtual void EarlyEHTerminator(uint64 offset);
+
+ // The FDE at OFFSET refers to the CIE at CIE_OFFSET, but the
+ // section is not that large.
+ virtual void CIEPointerOutOfRange(uint64 offset, uint64 cie_offset);
+
+ // The FDE at OFFSET refers to the CIE at CIE_OFFSET, but the entry
+ // there is not a CIE.
+ virtual void BadCIEId(uint64 offset, uint64 cie_offset);
+
+ // The FDE at OFFSET refers to a CIE with version number VERSION,
+ // which we don't recognize. We cannot parse DWARF CFI if it uses
+ // a version number we don't recognize.
+ virtual void UnrecognizedVersion(uint64 offset, int version);
+
+ // The FDE at OFFSET refers to a CIE with augmentation AUGMENTATION,
+ // which we don't recognize. We cannot parse DWARF CFI if it uses
+ // augmentations we don't recognize.
+ virtual void UnrecognizedAugmentation(uint64 offset,
+ const std::string& augmentation);
+
+ // The FDE at OFFSET contains an invalid or otherwise unusable Dwarf4
+ // specific field (currently, only "address_size" or "segment_size").
+ // Parsing DWARF CFI with unexpected values here seems dubious at best,
+ // so we stop. WHAT gives a little more information about what is wrong.
+ virtual void InvalidDwarf4Artefact(uint64 offset, const char* what);
+
+ // The pointer encoding ENCODING, specified by the CIE at OFFSET, is not
+ // a valid encoding.
+ virtual void InvalidPointerEncoding(uint64 offset, uint8 encoding);
+
+ // The pointer encoding ENCODING, specified by the CIE at OFFSET, depends
+ // on a base address which has not been supplied.
+ virtual void UnusablePointerEncoding(uint64 offset, uint8 encoding);
+
+ // The CIE at OFFSET contains a DW_CFA_restore instruction at
+ // INSN_OFFSET, which may not appear in a CIE.
+ virtual void RestoreInCIE(uint64 offset, uint64 insn_offset);
+
+ // The entry at OFFSET, of kind KIND, has an unrecognized
+ // instruction at INSN_OFFSET.
+ virtual void BadInstruction(uint64 offset, CallFrameInfo::EntryKind kind,
+ uint64 insn_offset);
+
+ // The instruction at INSN_OFFSET in the entry at OFFSET, of kind
+ // KIND, establishes a rule that cites the CFA, but we have not
+ // established a CFA rule yet.
+ virtual void NoCFARule(uint64 offset, CallFrameInfo::EntryKind kind,
+ uint64 insn_offset);
+
+ // The instruction at INSN_OFFSET in the entry at OFFSET, of kind
+ // KIND, is a DW_CFA_restore_state instruction, but the stack of
+ // saved states is empty.
+ virtual void EmptyStateStack(uint64 offset, CallFrameInfo::EntryKind kind,
+ uint64 insn_offset);
+
+ // The DW_CFA_remember_state instruction at INSN_OFFSET in the entry
+ // at OFFSET, of kind KIND, would restore a state that has no CFA
+ // rule, whereas the current state does have a CFA rule. This is
+ // bogus input, which the CallFrameInfo::Handler interface doesn't
+ // (and shouldn't) have any way to report.
+ virtual void ClearingCFARule(uint64 offset, CallFrameInfo::EntryKind kind,
+ uint64 insn_offset);
+
+ private:
+ // A logging sink function, as supplied by LUL's user.
+ void (*log_)(const char*);
+
+ protected:
+ // The name of the file whose CFI we're reading.
+ std::string filename_;
+
+ // The name of the CFI section in that file.
+ std::string section_;
+};
+
+using lul::CallFrameInfo;
+using lul::Summariser;
+
+// A class that accepts parsed call frame information from the DWARF
+// CFI parser and populates a google_breakpad::Module object with the
+// contents.
+class DwarfCFIToModule : public CallFrameInfo::Handler {
+ public:
+ // DwarfCFIToModule uses an instance of this class to report errors
+ // detected while converting DWARF CFI to Breakpad STACK CFI records.
+ class Reporter {
+ public:
+ // Create a reporter that writes messages to the message sink
+ // |aLog|. FILE is the name of the file we're processing, and
+ // SECTION is the name of the section within that file that we're
+ // looking at (.debug_frame, .eh_frame, etc.).
+ Reporter(void (*aLog)(const char*), const std::string& file,
+ const std::string& section)
+ : log_(aLog), file_(file), section_(section) {}
+ virtual ~Reporter() {}
+
+ // The DWARF CFI entry at OFFSET says that REG is undefined, but the
+ // Breakpad symbol file format cannot express this.
+ virtual void UndefinedNotSupported(size_t offset, const UniqueString* reg);
+
+ // The DWARF CFI entry at OFFSET says that REG uses a DWARF
+ // expression to find its value, but parseDwarfExpr could not
+ // convert it to a sequence of PfxInstrs.
+ virtual void ExpressionCouldNotBeSummarised(size_t offset,
+ const UniqueString* reg);
+
+ private:
+ // A logging sink function, as supplied by LUL's user.
+ void (*log_)(const char*);
+
+ protected:
+ std::string file_, section_;
+ };
+
+ // Register name tables. If TABLE is a vector returned by one of these
+ // functions, then TABLE[R] is the name of the register numbered R in
+ // DWARF call frame information.
+ class RegisterNames {
+ public:
+ // Intel's "x86" or IA-32.
+ static unsigned int I386();
+
+ // AMD x86_64, AMD64, Intel EM64T, or Intel 64
+ static unsigned int X86_64();
+
+ // ARM.
+ static unsigned int ARM();
+
+ // AARCH64.
+ static unsigned int ARM64();
+
+ // MIPS.
+ static unsigned int MIPS();
+ };
+
+ // Create a handler for the dwarf2reader::CallFrameInfo parser that
+ // records the stack unwinding information it receives in SUMM.
+ //
+ // Use REGISTER_NAMES[I] as the name of register number I; *this
+ // keeps a reference to the vector, so the vector should remain
+ // alive for as long as the DwarfCFIToModule does.
+ //
+ // Use REPORTER for reporting problems encountered in the conversion
+ // process.
+ DwarfCFIToModule(const unsigned int num_dw_regs, Reporter* reporter,
+ ByteReader* reader,
+ /*MOD*/ UniqueStringUniverse* usu,
+ /*OUT*/ Summariser* summ)
+ : summ_(summ),
+ usu_(usu),
+ num_dw_regs_(num_dw_regs),
+ reporter_(reporter),
+ reader_(reader),
+ return_address_(-1) {}
+ virtual ~DwarfCFIToModule() {}
+
+ virtual bool Entry(size_t offset, uint64 address, uint64 length,
+ uint8 version, const std::string& augmentation,
+ unsigned return_address) override;
+ virtual bool UndefinedRule(uint64 address, int reg) override;
+ virtual bool SameValueRule(uint64 address, int reg) override;
+ virtual bool OffsetRule(uint64 address, int reg, int base_register,
+ long offset) override;
+ virtual bool ValOffsetRule(uint64 address, int reg, int base_register,
+ long offset) override;
+ virtual bool RegisterRule(uint64 address, int reg,
+ int base_register) override;
+ virtual bool ExpressionRule(uint64 address, int reg,
+ const ImageSlice& expression) override;
+ virtual bool ValExpressionRule(uint64 address, int reg,
+ const ImageSlice& expression) override;
+ virtual bool End() override;
+
+ private:
+ // Return the name to use for register I.
+ const UniqueString* RegisterName(int i);
+
+ // The Summariser to which we should give entries
+ Summariser* summ_;
+
+ // Universe for creating UniqueStrings in, should that be necessary.
+ UniqueStringUniverse* usu_;
+
+ // The number of Dwarf-defined register names for this architecture.
+ const unsigned int num_dw_regs_;
+
+ // The reporter to use to report problems.
+ Reporter* reporter_;
+
+ // The ByteReader to use for parsing Dwarf expressions.
+ ByteReader* reader_;
+
+ // The section offset of the current frame description entry, for
+ // use in error messages.
+ size_t entry_offset_;
+
+ // The return address column for that entry.
+ unsigned return_address_;
+};
+
+// Convert the Dwarf expression in |expr| into PfxInstrs stored in the
+// SecMap referred to by |summ|, and return the index of the starting
+// PfxInstr added, which must be >= 0. In case of failure return -1.
+int32_t parseDwarfExpr(Summariser* summ, const ByteReader* reader,
+ ImageSlice expr, bool debug, bool pushCfaAtStart,
+ bool derefAtEnd);
+
+} // namespace lul
+
+#endif // LulDwarfExt_h
diff --git a/tools/profiler/lul/LulDwarfInt.h b/tools/profiler/lul/LulDwarfInt.h
new file mode 100644
index 0000000000..b72c6e08e3
--- /dev/null
+++ b/tools/profiler/lul/LulDwarfInt.h
@@ -0,0 +1,193 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+
+// Copyright (c) 2008, 2010 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.
+
+// CFI reader author: Jim Blandy <jimb@mozilla.com> <jimb@red-bean.com>
+
+// This file is derived from the following file in
+// toolkit/crashreporter/google-breakpad:
+// src/common/dwarf/dwarf2enums.h
+
+#ifndef LulDwarfInt_h
+#define LulDwarfInt_h
+
+#include "LulCommonExt.h"
+#include "LulDwarfExt.h"
+
+namespace lul {
+
+// These enums do not follow the google3 style only because they are
+// known universally (specs, other implementations) by the names in
+// exactly this capitalization.
+// Tag names and codes.
+
+// Call Frame Info instructions.
+enum DwarfCFI {
+ DW_CFA_advance_loc = 0x40,
+ DW_CFA_offset = 0x80,
+ DW_CFA_restore = 0xc0,
+ DW_CFA_nop = 0x00,
+ DW_CFA_set_loc = 0x01,
+ DW_CFA_advance_loc1 = 0x02,
+ DW_CFA_advance_loc2 = 0x03,
+ DW_CFA_advance_loc4 = 0x04,
+ DW_CFA_offset_extended = 0x05,
+ DW_CFA_restore_extended = 0x06,
+ DW_CFA_undefined = 0x07,
+ DW_CFA_same_value = 0x08,
+ DW_CFA_register = 0x09,
+ DW_CFA_remember_state = 0x0a,
+ DW_CFA_restore_state = 0x0b,
+ DW_CFA_def_cfa = 0x0c,
+ DW_CFA_def_cfa_register = 0x0d,
+ DW_CFA_def_cfa_offset = 0x0e,
+ DW_CFA_def_cfa_expression = 0x0f,
+ DW_CFA_expression = 0x10,
+ DW_CFA_offset_extended_sf = 0x11,
+ DW_CFA_def_cfa_sf = 0x12,
+ DW_CFA_def_cfa_offset_sf = 0x13,
+ DW_CFA_val_offset = 0x14,
+ DW_CFA_val_offset_sf = 0x15,
+ DW_CFA_val_expression = 0x16,
+
+ // Opcodes in this range are reserved for user extensions.
+ DW_CFA_lo_user = 0x1c,
+ DW_CFA_hi_user = 0x3f,
+
+ // SGI/MIPS specific.
+ DW_CFA_MIPS_advance_loc8 = 0x1d,
+
+ // GNU extensions.
+ DW_CFA_GNU_window_save = 0x2d,
+ DW_CFA_GNU_args_size = 0x2e,
+ DW_CFA_GNU_negative_offset_extended = 0x2f
+};
+
+// Exception handling 'z' augmentation letters.
+enum DwarfZAugmentationCodes {
+ // If the CFI augmentation string begins with 'z', then the CIE and FDE
+ // have an augmentation data area just before the instructions, whose
+ // contents are determined by the subsequent augmentation letters.
+ DW_Z_augmentation_start = 'z',
+
+ // If this letter is present in a 'z' augmentation string, the CIE
+ // augmentation data includes a pointer encoding, and the FDE
+ // augmentation data includes a language-specific data area pointer,
+ // represented using that encoding.
+ DW_Z_has_LSDA = 'L',
+
+ // If this letter is present in a 'z' augmentation string, the CIE
+ // augmentation data includes a pointer encoding, followed by a pointer
+ // to a personality routine, represented using that encoding.
+ DW_Z_has_personality_routine = 'P',
+
+ // If this letter is present in a 'z' augmentation string, the CIE
+ // augmentation data includes a pointer encoding describing how the FDE's
+ // initial location, address range, and DW_CFA_set_loc operands are
+ // encoded.
+ DW_Z_has_FDE_address_encoding = 'R',
+
+ // If this letter is present in a 'z' augmentation string, then code
+ // addresses covered by FDEs that cite this CIE are signal delivery
+ // trampolines. Return addresses of frames in trampolines should not be
+ // adjusted as described in section 6.4.4 of the DWARF 3 spec.
+ DW_Z_is_signal_trampoline = 'S'
+};
+
+// Expression opcodes
+enum DwarfExpressionOpcodes {
+ DW_OP_addr = 0x03,
+ DW_OP_deref = 0x06,
+ DW_OP_const1s = 0x09,
+ DW_OP_const2u = 0x0a,
+ DW_OP_const2s = 0x0b,
+ DW_OP_const4u = 0x0c,
+ DW_OP_const4s = 0x0d,
+ DW_OP_const8u = 0x0e,
+ DW_OP_const8s = 0x0f,
+ DW_OP_constu = 0x10,
+ DW_OP_consts = 0x11,
+ DW_OP_dup = 0x12,
+ DW_OP_drop = 0x13,
+ DW_OP_over = 0x14,
+ DW_OP_pick = 0x15,
+ DW_OP_swap = 0x16,
+ DW_OP_rot = 0x17,
+ DW_OP_xderef = 0x18,
+ DW_OP_abs = 0x19,
+ DW_OP_and = 0x1a,
+ DW_OP_div = 0x1b,
+ DW_OP_minus = 0x1c,
+ DW_OP_mod = 0x1d,
+ DW_OP_mul = 0x1e,
+ DW_OP_neg = 0x1f,
+ DW_OP_not = 0x20,
+ DW_OP_or = 0x21,
+ DW_OP_plus = 0x22,
+ DW_OP_plus_uconst = 0x23,
+ DW_OP_shl = 0x24,
+ DW_OP_shr = 0x25,
+ DW_OP_shra = 0x26,
+ DW_OP_xor = 0x27,
+ DW_OP_skip = 0x2f,
+ DW_OP_bra = 0x28,
+ DW_OP_eq = 0x29,
+ DW_OP_ge = 0x2a,
+ DW_OP_gt = 0x2b,
+ DW_OP_le = 0x2c,
+ DW_OP_lt = 0x2d,
+ DW_OP_ne = 0x2e,
+ DW_OP_lit0 = 0x30,
+ DW_OP_lit31 = 0x4f,
+ DW_OP_reg0 = 0x50,
+ DW_OP_reg31 = 0x6f,
+ DW_OP_breg0 = 0x70,
+ DW_OP_breg31 = 0x8f,
+ DW_OP_regx = 0x90,
+ DW_OP_fbreg = 0x91,
+ DW_OP_bregx = 0x92,
+ DW_OP_piece = 0x93,
+ DW_OP_deref_size = 0x94,
+ DW_OP_xderef_size = 0x95,
+ DW_OP_nop = 0x96,
+ DW_OP_push_object_address = 0x97,
+ DW_OP_call2 = 0x98,
+ DW_OP_call4 = 0x99,
+ DW_OP_call_ref = 0x9a,
+ DW_OP_form_tls_address = 0x9b,
+ DW_OP_call_frame_cfa = 0x9c,
+ DW_OP_bit_piece = 0x9d,
+ DW_OP_lo_user = 0xe0,
+ DW_OP_hi_user = 0xff
+};
+
+} // namespace lul
+
+#endif // LulDwarfInt_h
diff --git a/tools/profiler/lul/LulDwarfSummariser.cpp b/tools/profiler/lul/LulDwarfSummariser.cpp
new file mode 100644
index 0000000000..e9172c3e18
--- /dev/null
+++ b/tools/profiler/lul/LulDwarfSummariser.cpp
@@ -0,0 +1,549 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "LulDwarfSummariser.h"
+
+#include "LulDwarfExt.h"
+
+#include "mozilla/Assertions.h"
+#include "mozilla/Sprintf.h"
+
+// Set this to 1 for verbose logging
+#define DEBUG_SUMMARISER 0
+
+namespace lul {
+
+// Do |s64|'s lowest 32 bits sign extend back to |s64| itself?
+static inline bool fitsIn32Bits(int64 s64) {
+ return s64 == ((s64 & 0xffffffff) ^ 0x80000000) - 0x80000000;
+}
+
+// Check a LExpr prefix expression, starting at pfxInstrs[start] up to
+// the next PX_End instruction, to ensure that:
+// * It only mentions registers that are tracked on this target
+// * The start point is sane
+// If the expression is ok, return NULL. Else return a pointer
+// a const char* holding a bit of text describing the problem.
+static const char* checkPfxExpr(const vector<PfxInstr>* pfxInstrs,
+ int64_t start) {
+ size_t nInstrs = pfxInstrs->size();
+ if (start < 0 || start >= (ssize_t)nInstrs) {
+ return "bogus start point";
+ }
+ size_t i;
+ for (i = start; i < nInstrs; i++) {
+ PfxInstr pxi = (*pfxInstrs)[i];
+ if (pxi.mOpcode == PX_End) break;
+ if (pxi.mOpcode == PX_DwReg &&
+ !registerIsTracked((DW_REG_NUMBER)pxi.mOperand)) {
+ return "uses untracked reg";
+ }
+ }
+ return nullptr; // success
+}
+
+Summariser::Summariser(SecMap* aSecMap, uintptr_t aTextBias,
+ void (*aLog)(const char*))
+ : mSecMap(aSecMap), mTextBias(aTextBias), mLog(aLog) {
+ mCurrAddr = 0;
+ mMax1Addr = 0; // Gives an empty range.
+
+ // Initialise the running RuleSet to "haven't got a clue" status.
+ new (&mCurrRules) RuleSet();
+}
+
+void Summariser::Entry(uintptr_t aAddress, uintptr_t aLength) {
+ aAddress += mTextBias;
+ if (DEBUG_SUMMARISER) {
+ char buf[100];
+ SprintfLiteral(buf, "LUL Entry(%llx, %llu)\n",
+ (unsigned long long int)aAddress,
+ (unsigned long long int)aLength);
+ mLog(buf);
+ }
+ // This throws away any previous summary, that is, assumes
+ // that the previous summary, if any, has been properly finished
+ // by a call to End().
+ mCurrAddr = aAddress;
+ mMax1Addr = aAddress + aLength;
+ new (&mCurrRules) RuleSet();
+}
+
+void Summariser::Rule(uintptr_t aAddress, int aNewReg, LExprHow how,
+ int16_t oldReg, int64_t offset) {
+ aAddress += mTextBias;
+ if (DEBUG_SUMMARISER) {
+ char buf[100];
+ if (how == NODEREF || how == DEREF) {
+ bool deref = how == DEREF;
+ SprintfLiteral(buf, "LUL 0x%llx old-r%d = %sr%d + %lld%s\n",
+ (unsigned long long int)aAddress, aNewReg,
+ deref ? "*(" : "", (int)oldReg, (long long int)offset,
+ deref ? ")" : "");
+ } else if (how == PFXEXPR) {
+ SprintfLiteral(buf, "LUL 0x%llx old-r%d = pfx-expr-at %lld\n",
+ (unsigned long long int)aAddress, aNewReg,
+ (long long int)offset);
+ } else {
+ SprintfLiteral(buf, "LUL 0x%llx old-r%d = (invalid LExpr!)\n",
+ (unsigned long long int)aAddress, aNewReg);
+ }
+ mLog(buf);
+ }
+
+ if (mCurrAddr < aAddress) {
+ // Flush the existing summary first.
+ mSecMap->AddRuleSet(&mCurrRules, mCurrAddr, aAddress - mCurrAddr);
+ if (DEBUG_SUMMARISER) {
+ mLog("LUL ");
+ mCurrRules.Print(mCurrAddr, aAddress - mCurrAddr, mLog);
+ mLog("\n");
+ }
+ mCurrAddr = aAddress;
+ }
+
+ // If for some reason summarisation fails, either or both of these
+ // become non-null and point at constant text describing the
+ // problem. Using two rather than just one avoids complications of
+ // having to concatenate two strings to produce a complete error message.
+ const char* reason1 = nullptr;
+ const char* reason2 = nullptr;
+
+ // |offset| needs to be a 32 bit value that sign extends to 64 bits
+ // on a 64 bit target. We will need to incorporate |offset| into
+ // any LExpr made here. So we may as well check it right now.
+ if (!fitsIn32Bits(offset)) {
+ reason1 = "offset not in signed 32-bit range";
+ goto cant_summarise;
+ }
+
+ // FIXME: factor out common parts of the arch-dependent summarisers.
+
+#if defined(GP_ARCH_arm)
+
+ // ----------------- arm ----------------- //
+
+ // Now, can we add the rule to our summary? This depends on whether
+ // the registers and the overall expression are representable. This
+ // is the heart of the summarisation process.
+ switch (aNewReg) {
+ case DW_REG_CFA:
+ // This is a rule that defines the CFA. The only forms we
+ // choose to represent are: r7/11/12/13 + offset. The offset
+ // must fit into 32 bits since 'uintptr_t' is 32 bit on ARM,
+ // hence there is no need to check it for overflow.
+ if (how != NODEREF) {
+ reason1 = "rule for DW_REG_CFA: invalid |how|";
+ goto cant_summarise;
+ }
+ switch (oldReg) {
+ case DW_REG_ARM_R7:
+ case DW_REG_ARM_R11:
+ case DW_REG_ARM_R12:
+ case DW_REG_ARM_R13:
+ break;
+ default:
+ reason1 = "rule for DW_REG_CFA: invalid |oldReg|";
+ goto cant_summarise;
+ }
+ mCurrRules.mCfaExpr = LExpr(how, oldReg, offset);
+ break;
+
+ case DW_REG_ARM_R7:
+ case DW_REG_ARM_R11:
+ case DW_REG_ARM_R12:
+ case DW_REG_ARM_R13:
+ case DW_REG_ARM_R14:
+ case DW_REG_ARM_R15: {
+ // This is a new rule for R7, R11, R12, R13 (SP), R14 (LR) or
+ // R15 (the return address).
+ switch (how) {
+ case NODEREF:
+ case DEREF:
+ // Check the old register is one we're tracking.
+ if (!registerIsTracked((DW_REG_NUMBER)oldReg) &&
+ oldReg != DW_REG_CFA) {
+ reason1 = "rule for R7/11/12/13/14/15: uses untracked reg";
+ goto cant_summarise;
+ }
+ break;
+ case PFXEXPR: {
+ // Check that the prefix expression only mentions tracked registers.
+ const vector<PfxInstr>* pfxInstrs = mSecMap->GetPfxInstrs();
+ reason2 = checkPfxExpr(pfxInstrs, offset);
+ if (reason2) {
+ reason1 = "rule for R7/11/12/13/14/15: ";
+ goto cant_summarise;
+ }
+ break;
+ }
+ default:
+ goto cant_summarise;
+ }
+ LExpr expr = LExpr(how, oldReg, offset);
+ switch (aNewReg) {
+ case DW_REG_ARM_R7:
+ mCurrRules.mR7expr = expr;
+ break;
+ case DW_REG_ARM_R11:
+ mCurrRules.mR11expr = expr;
+ break;
+ case DW_REG_ARM_R12:
+ mCurrRules.mR12expr = expr;
+ break;
+ case DW_REG_ARM_R13:
+ mCurrRules.mR13expr = expr;
+ break;
+ case DW_REG_ARM_R14:
+ mCurrRules.mR14expr = expr;
+ break;
+ case DW_REG_ARM_R15:
+ mCurrRules.mR15expr = expr;
+ break;
+ default:
+ MOZ_ASSERT(0);
+ }
+ break;
+ }
+
+ default:
+ // Leave |reason1| and |reason2| unset here. This program point
+ // is reached so often that it causes a flood of "Can't
+ // summarise" messages. In any case, we don't really care about
+ // the fact that this summary would produce a new value for a
+ // register that we're not tracking. We do on the other hand
+ // care if the summary's expression *uses* a register that we're
+ // not tracking. But in that case one of the above failures
+ // should tell us which.
+ goto cant_summarise;
+ }
+
+ // Mark callee-saved registers (r4 .. r11) as unchanged, if there is
+ // no other information about them. FIXME: do this just once, at
+ // the point where the ruleset is committed.
+ if (mCurrRules.mR7expr.mHow == UNKNOWN) {
+ mCurrRules.mR7expr = LExpr(NODEREF, DW_REG_ARM_R7, 0);
+ }
+ if (mCurrRules.mR11expr.mHow == UNKNOWN) {
+ mCurrRules.mR11expr = LExpr(NODEREF, DW_REG_ARM_R11, 0);
+ }
+ if (mCurrRules.mR12expr.mHow == UNKNOWN) {
+ mCurrRules.mR12expr = LExpr(NODEREF, DW_REG_ARM_R12, 0);
+ }
+
+ // The old r13 (SP) value before the call is always the same as the
+ // CFA.
+ mCurrRules.mR13expr = LExpr(NODEREF, DW_REG_CFA, 0);
+
+ // If there's no information about R15 (the return address), say
+ // it's a copy of R14 (the link register).
+ if (mCurrRules.mR15expr.mHow == UNKNOWN) {
+ mCurrRules.mR15expr = LExpr(NODEREF, DW_REG_ARM_R14, 0);
+ }
+
+#elif defined(GP_ARCH_arm64)
+
+ // ----------------- arm64 ----------------- //
+
+ switch (aNewReg) {
+ case DW_REG_CFA:
+ if (how != NODEREF) {
+ reason1 = "rule for DW_REG_CFA: invalid |how|";
+ goto cant_summarise;
+ }
+ switch (oldReg) {
+ case DW_REG_AARCH64_X29:
+ case DW_REG_AARCH64_SP:
+ break;
+ default:
+ reason1 = "rule for DW_REG_CFA: invalid |oldReg|";
+ goto cant_summarise;
+ }
+ mCurrRules.mCfaExpr = LExpr(how, oldReg, offset);
+ break;
+
+ case DW_REG_AARCH64_X29:
+ case DW_REG_AARCH64_X30:
+ case DW_REG_AARCH64_SP: {
+ switch (how) {
+ case NODEREF:
+ case DEREF:
+ // Check the old register is one we're tracking.
+ if (!registerIsTracked((DW_REG_NUMBER)oldReg) &&
+ oldReg != DW_REG_CFA) {
+ reason1 = "rule for X29/X30/SP: uses untracked reg";
+ goto cant_summarise;
+ }
+ break;
+ case PFXEXPR: {
+ // Check that the prefix expression only mentions tracked registers.
+ const vector<PfxInstr>* pfxInstrs = mSecMap->GetPfxInstrs();
+ reason2 = checkPfxExpr(pfxInstrs, offset);
+ if (reason2) {
+ reason1 = "rule for X29/X30/SP: ";
+ goto cant_summarise;
+ }
+ break;
+ }
+ default:
+ goto cant_summarise;
+ }
+ LExpr expr = LExpr(how, oldReg, offset);
+ switch (aNewReg) {
+ case DW_REG_AARCH64_X29:
+ mCurrRules.mX29expr = expr;
+ break;
+ case DW_REG_AARCH64_X30:
+ mCurrRules.mX30expr = expr;
+ break;
+ case DW_REG_AARCH64_SP:
+ mCurrRules.mSPexpr = expr;
+ break;
+ default:
+ MOZ_ASSERT(0);
+ }
+ break;
+ }
+ default:
+ // Leave |reason1| and |reason2| unset here, for the reasons explained
+ // in the analogous point
+ goto cant_summarise;
+ }
+
+ if (mCurrRules.mX29expr.mHow == UNKNOWN) {
+ mCurrRules.mX29expr = LExpr(NODEREF, DW_REG_AARCH64_X29, 0);
+ }
+ if (mCurrRules.mX30expr.mHow == UNKNOWN) {
+ mCurrRules.mX30expr = LExpr(NODEREF, DW_REG_AARCH64_X30, 0);
+ }
+ // On aarch64, it seems the old SP value before the call is always the
+ // same as the CFA. Therefore, in the absence of any other way to
+ // recover the SP, specify that the CFA should be copied.
+ if (mCurrRules.mSPexpr.mHow == UNKNOWN) {
+ mCurrRules.mSPexpr = LExpr(NODEREF, DW_REG_CFA, 0);
+ }
+#elif defined(GP_ARCH_amd64) || defined(GP_ARCH_x86)
+
+ // ---------------- x64/x86 ---------------- //
+
+ // Now, can we add the rule to our summary? This depends on whether
+ // the registers and the overall expression are representable. This
+ // is the heart of the summarisation process.
+ switch (aNewReg) {
+ case DW_REG_CFA: {
+ // This is a rule that defines the CFA. The only forms we choose to
+ // represent are: = SP+offset, = FP+offset, or =prefix-expr.
+ switch (how) {
+ case NODEREF:
+ if (oldReg != DW_REG_INTEL_XSP && oldReg != DW_REG_INTEL_XBP) {
+ reason1 = "rule for DW_REG_CFA: invalid |oldReg|";
+ goto cant_summarise;
+ }
+ break;
+ case DEREF:
+ reason1 = "rule for DW_REG_CFA: invalid |how|";
+ goto cant_summarise;
+ case PFXEXPR: {
+ // Check that the prefix expression only mentions tracked registers.
+ const vector<PfxInstr>* pfxInstrs = mSecMap->GetPfxInstrs();
+ reason2 = checkPfxExpr(pfxInstrs, offset);
+ if (reason2) {
+ reason1 = "rule for CFA: ";
+ goto cant_summarise;
+ }
+ break;
+ }
+ default:
+ goto cant_summarise;
+ }
+ mCurrRules.mCfaExpr = LExpr(how, oldReg, offset);
+ break;
+ }
+
+ case DW_REG_INTEL_XSP:
+ case DW_REG_INTEL_XBP:
+ case DW_REG_INTEL_XIP: {
+ // This is a new rule for XSP, XBP or XIP (the return address).
+ switch (how) {
+ case NODEREF:
+ case DEREF:
+ // Check the old register is one we're tracking.
+ if (!registerIsTracked((DW_REG_NUMBER)oldReg) &&
+ oldReg != DW_REG_CFA) {
+ reason1 = "rule for XSP/XBP/XIP: uses untracked reg";
+ goto cant_summarise;
+ }
+ break;
+ case PFXEXPR: {
+ // Check that the prefix expression only mentions tracked registers.
+ const vector<PfxInstr>* pfxInstrs = mSecMap->GetPfxInstrs();
+ reason2 = checkPfxExpr(pfxInstrs, offset);
+ if (reason2) {
+ reason1 = "rule for XSP/XBP/XIP: ";
+ goto cant_summarise;
+ }
+ break;
+ }
+ default:
+ goto cant_summarise;
+ }
+ LExpr expr = LExpr(how, oldReg, offset);
+ switch (aNewReg) {
+ case DW_REG_INTEL_XBP:
+ mCurrRules.mXbpExpr = expr;
+ break;
+ case DW_REG_INTEL_XSP:
+ mCurrRules.mXspExpr = expr;
+ break;
+ case DW_REG_INTEL_XIP:
+ mCurrRules.mXipExpr = expr;
+ break;
+ default:
+ MOZ_CRASH("impossible value for aNewReg");
+ }
+ break;
+ }
+
+ default:
+ // Leave |reason1| and |reason2| unset here, for the reasons
+ // explained in the analogous point in the ARM case just above.
+ goto cant_summarise;
+ }
+
+ // On Intel, it seems the old SP value before the call is always the
+ // same as the CFA. Therefore, in the absence of any other way to
+ // recover the SP, specify that the CFA should be copied.
+ if (mCurrRules.mXspExpr.mHow == UNKNOWN) {
+ mCurrRules.mXspExpr = LExpr(NODEREF, DW_REG_CFA, 0);
+ }
+
+ // Also, gcc says "Undef" for BP when it is unchanged.
+ if (mCurrRules.mXbpExpr.mHow == UNKNOWN) {
+ mCurrRules.mXbpExpr = LExpr(NODEREF, DW_REG_INTEL_XBP, 0);
+ }
+
+#elif defined(GP_ARCH_mips64)
+ // ---------------- mips ---------------- //
+ //
+ // Now, can we add the rule to our summary? This depends on whether
+ // the registers and the overall expression are representable. This
+ // is the heart of the summarisation process.
+ switch (aNewReg) {
+ case DW_REG_CFA:
+ // This is a rule that defines the CFA. The only forms we can
+ // represent are: = SP+offset or = FP+offset.
+ if (how != NODEREF) {
+ reason1 = "rule for DW_REG_CFA: invalid |how|";
+ goto cant_summarise;
+ }
+ if (oldReg != DW_REG_MIPS_SP && oldReg != DW_REG_MIPS_FP) {
+ reason1 = "rule for DW_REG_CFA: invalid |oldReg|";
+ goto cant_summarise;
+ }
+ mCurrRules.mCfaExpr = LExpr(how, oldReg, offset);
+ break;
+
+ case DW_REG_MIPS_SP:
+ case DW_REG_MIPS_FP:
+ case DW_REG_MIPS_PC: {
+ // This is a new rule for SP, FP or PC (the return address).
+ switch (how) {
+ case NODEREF:
+ case DEREF:
+ // Check the old register is one we're tracking.
+ if (!registerIsTracked((DW_REG_NUMBER)oldReg) &&
+ oldReg != DW_REG_CFA) {
+ reason1 = "rule for SP/FP/PC: uses untracked reg";
+ goto cant_summarise;
+ }
+ break;
+ case PFXEXPR: {
+ // Check that the prefix expression only mentions tracked registers.
+ const vector<PfxInstr>* pfxInstrs = mSecMap->GetPfxInstrs();
+ reason2 = checkPfxExpr(pfxInstrs, offset);
+ if (reason2) {
+ reason1 = "rule for SP/FP/PC: ";
+ goto cant_summarise;
+ }
+ break;
+ }
+ default:
+ goto cant_summarise;
+ }
+ LExpr expr = LExpr(how, oldReg, offset);
+ switch (aNewReg) {
+ case DW_REG_MIPS_FP:
+ mCurrRules.mFPexpr = expr;
+ break;
+ case DW_REG_MIPS_SP:
+ mCurrRules.mSPexpr = expr;
+ break;
+ case DW_REG_MIPS_PC:
+ mCurrRules.mPCexpr = expr;
+ break;
+ default:
+ MOZ_CRASH("impossible value for aNewReg");
+ }
+ break;
+ }
+ default:
+ // Leave |reason1| and |reason2| unset here, for the reasons
+ // explained in the analogous point in the ARM case just above.
+ goto cant_summarise;
+ }
+
+ // On MIPS, it seems the old SP value before the call is always the
+ // same as the CFA. Therefore, in the absence of any other way to
+ // recover the SP, specify that the CFA should be copied.
+ if (mCurrRules.mSPexpr.mHow == UNKNOWN) {
+ mCurrRules.mSPexpr = LExpr(NODEREF, DW_REG_CFA, 0);
+ }
+
+ // Also, gcc says "Undef" for FP when it is unchanged.
+ if (mCurrRules.mFPexpr.mHow == UNKNOWN) {
+ mCurrRules.mFPexpr = LExpr(NODEREF, DW_REG_MIPS_FP, 0);
+ }
+
+#else
+
+# error "Unsupported arch"
+#endif
+
+ return;
+
+cant_summarise:
+ if (reason1 || reason2) {
+ char buf[200];
+ SprintfLiteral(buf,
+ "LUL can't summarise: "
+ "SVMA=0x%llx: %s%s, expr=LExpr(%s,%u,%lld)\n",
+ (unsigned long long int)(aAddress - mTextBias),
+ reason1 ? reason1 : "", reason2 ? reason2 : "",
+ NameOf_LExprHow(how), (unsigned int)oldReg,
+ (long long int)offset);
+ mLog(buf);
+ }
+}
+
+uint32_t Summariser::AddPfxInstr(PfxInstr pfxi) {
+ return mSecMap->AddPfxInstr(pfxi);
+}
+
+void Summariser::End() {
+ if (DEBUG_SUMMARISER) {
+ mLog("LUL End\n");
+ }
+ if (mCurrAddr < mMax1Addr) {
+ mSecMap->AddRuleSet(&mCurrRules, mCurrAddr, mMax1Addr - mCurrAddr);
+ if (DEBUG_SUMMARISER) {
+ mLog("LUL ");
+ mCurrRules.Print(mCurrAddr, mMax1Addr - mCurrAddr, mLog);
+ mLog("\n");
+ }
+ }
+}
+
+} // namespace lul
diff --git a/tools/profiler/lul/LulDwarfSummariser.h b/tools/profiler/lul/LulDwarfSummariser.h
new file mode 100644
index 0000000000..30f1ba23c1
--- /dev/null
+++ b/tools/profiler/lul/LulDwarfSummariser.h
@@ -0,0 +1,64 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef LulDwarfSummariser_h
+#define LulDwarfSummariser_h
+
+#include "LulMainInt.h"
+
+namespace lul {
+
+class Summariser {
+ public:
+ Summariser(SecMap* aSecMap, uintptr_t aTextBias, void (*aLog)(const char*));
+
+ virtual void Entry(uintptr_t aAddress, uintptr_t aLength);
+ virtual void End();
+
+ // Tell the summariser that the value for |aNewReg| at |aAddress| is
+ // recovered using the LExpr that can be constructed using the
+ // components |how|, |oldReg| and |offset|. The summariser will
+ // inspect the components and may reject them for various reasons,
+ // but the hope is that it will find them acceptable and record this
+ // rule permanently.
+ virtual void Rule(uintptr_t aAddress, int aNewReg, LExprHow how,
+ int16_t oldReg, int64_t offset);
+
+ virtual uint32_t AddPfxInstr(PfxInstr pfxi);
+
+ // Send output to the logging sink, for debugging.
+ virtual void Log(const char* str) { mLog(str); }
+
+ private:
+ // The SecMap in which we park the finished summaries (RuleSets) and
+ // also any PfxInstrs derived from Dwarf expressions.
+ SecMap* mSecMap;
+
+ // Running state for the current summary (RuleSet) under construction.
+ RuleSet mCurrRules;
+
+ // The start of the address range to which the RuleSet under
+ // construction applies.
+ uintptr_t mCurrAddr;
+
+ // The highest address, plus one, for which the RuleSet under
+ // construction could possibly apply. If there are no further
+ // incoming events then mCurrRules will eventually be emitted
+ // as-is, for the range mCurrAddr.. mMax1Addr - 1, if that is
+ // nonempty.
+ uintptr_t mMax1Addr;
+
+ // The bias value (to add to the SVMAs, to get AVMAs) to be used
+ // when adding entries into mSecMap.
+ uintptr_t mTextBias;
+
+ // A logging sink, for debugging.
+ void (*mLog)(const char* aFmt);
+};
+
+} // namespace lul
+
+#endif // LulDwarfSummariser_h
diff --git a/tools/profiler/lul/LulElf.cpp b/tools/profiler/lul/LulElf.cpp
new file mode 100644
index 0000000000..28980a1349
--- /dev/null
+++ b/tools/profiler/lul/LulElf.cpp
@@ -0,0 +1,887 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+
+// Copyright (c) 2006, 2011, 2012 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.
+
+// Restructured in 2009 by: Jim Blandy <jimb@mozilla.com> <jimb@red-bean.com>
+
+// (derived from)
+// dump_symbols.cc: implement google_breakpad::WriteSymbolFile:
+// Find all the debugging info in a file and dump it as a Breakpad symbol file.
+//
+// dump_symbols.h: Read debugging information from an ELF file, and write
+// it out as a Breakpad symbol file.
+
+// This file is derived from the following files in
+// toolkit/crashreporter/google-breakpad:
+// src/common/linux/dump_symbols.cc
+// src/common/linux/elfutils.cc
+// src/common/linux/file_id.cc
+
+#include <errno.h>
+#include <fcntl.h>
+#include <libgen.h>
+#include <stdio.h>
+#include <string.h>
+#include <sys/mman.h>
+#include <sys/stat.h>
+#include <unistd.h>
+#include <arpa/inet.h>
+
+#include <set>
+#include <string>
+#include <vector>
+
+#include "mozilla/Assertions.h"
+#include "mozilla/Sprintf.h"
+
+#include "PlatformMacros.h"
+#include "LulCommonExt.h"
+#include "LulDwarfExt.h"
+#include "LulElfInt.h"
+#include "LulMainInt.h"
+
+#if defined(GP_PLAT_arm_android) && !defined(SHT_ARM_EXIDX)
+// bionic and older glibsc don't define it
+# define SHT_ARM_EXIDX (SHT_LOPROC + 1)
+#endif
+
+#if (defined(GP_PLAT_amd64_linux) || defined(GP_PLAT_amd64_android)) && \
+ !defined(SHT_X86_64_UNWIND)
+// This is sometimes necessary on x86_64-android and x86_64-linux.
+# define SHT_X86_64_UNWIND 0x70000001
+#endif
+
+// Old Linux header doesn't define EM_AARCH64
+#ifndef EM_AARCH64
+# define EM_AARCH64 183
+#endif
+
+// This namespace contains helper functions.
+namespace {
+
+using lul::DwarfCFIToModule;
+using lul::FindElfSectionByName;
+using lul::GetOffset;
+using lul::IsValidElf;
+using lul::Module;
+using lul::scoped_ptr;
+using lul::Summariser;
+using lul::UniqueStringUniverse;
+using std::set;
+using std::string;
+using std::vector;
+
+//
+// FDWrapper
+//
+// Wrapper class to make sure opened file is closed.
+//
+class FDWrapper {
+ public:
+ explicit FDWrapper(int fd) : fd_(fd) {}
+ ~FDWrapper() {
+ if (fd_ != -1) close(fd_);
+ }
+ int get() { return fd_; }
+ int release() {
+ int fd = fd_;
+ fd_ = -1;
+ return fd;
+ }
+
+ private:
+ int fd_;
+};
+
+//
+// MmapWrapper
+//
+// Wrapper class to make sure mapped regions are unmapped.
+//
+class MmapWrapper {
+ public:
+ MmapWrapper() : is_set_(false), base_(NULL), size_(0) {}
+ ~MmapWrapper() {
+ if (is_set_ && base_ != NULL) {
+ MOZ_ASSERT(size_ > 0);
+ munmap(base_, size_);
+ }
+ }
+ void set(void* mapped_address, size_t mapped_size) {
+ is_set_ = true;
+ base_ = mapped_address;
+ size_ = mapped_size;
+ }
+ void release() {
+ MOZ_ASSERT(is_set_);
+ is_set_ = false;
+ base_ = NULL;
+ size_ = 0;
+ }
+
+ private:
+ bool is_set_;
+ void* base_;
+ size_t size_;
+};
+
+// Set NUM_DW_REGNAMES to be the number of Dwarf register names
+// appropriate to the machine architecture given in HEADER. Return
+// true on success, or false if HEADER's machine architecture is not
+// supported.
+template <typename ElfClass>
+bool DwarfCFIRegisterNames(const typename ElfClass::Ehdr* elf_header,
+ unsigned int* num_dw_regnames) {
+ switch (elf_header->e_machine) {
+ case EM_386:
+ *num_dw_regnames = DwarfCFIToModule::RegisterNames::I386();
+ return true;
+ case EM_ARM:
+ *num_dw_regnames = DwarfCFIToModule::RegisterNames::ARM();
+ return true;
+ case EM_X86_64:
+ *num_dw_regnames = DwarfCFIToModule::RegisterNames::X86_64();
+ return true;
+ case EM_MIPS:
+ *num_dw_regnames = DwarfCFIToModule::RegisterNames::MIPS();
+ return true;
+ case EM_AARCH64:
+ *num_dw_regnames = DwarfCFIToModule::RegisterNames::ARM64();
+ return true;
+ default:
+ MOZ_ASSERT(0);
+ return false;
+ }
+}
+
+template <typename ElfClass>
+bool LoadDwarfCFI(const string& dwarf_filename,
+ const typename ElfClass::Ehdr* elf_header,
+ const char* section_name,
+ const typename ElfClass::Shdr* section, const bool eh_frame,
+ const typename ElfClass::Shdr* got_section,
+ const typename ElfClass::Shdr* text_section,
+ const bool big_endian, SecMap* smap, uintptr_t text_bias,
+ UniqueStringUniverse* usu, void (*log)(const char*)) {
+ // Find the appropriate set of register names for this file's
+ // architecture.
+ unsigned int num_dw_regs = 0;
+ if (!DwarfCFIRegisterNames<ElfClass>(elf_header, &num_dw_regs)) {
+ fprintf(stderr,
+ "%s: unrecognized ELF machine architecture '%d';"
+ " cannot convert DWARF call frame information\n",
+ dwarf_filename.c_str(), elf_header->e_machine);
+ return false;
+ }
+
+ const lul::Endianness endianness =
+ big_endian ? lul::ENDIANNESS_BIG : lul::ENDIANNESS_LITTLE;
+
+ // Find the call frame information and its size.
+ const char* cfi = GetOffset<ElfClass, char>(elf_header, section->sh_offset);
+ size_t cfi_size = section->sh_size;
+
+ // Plug together the parser, handler, and their entourages.
+
+ // Here's a summariser, which will receive the output of the
+ // parser, create summaries, and add them to |smap|.
+ Summariser summ(smap, text_bias, log);
+
+ lul::ByteReader reader(endianness);
+ reader.SetAddressSize(ElfClass::kAddrSize);
+
+ DwarfCFIToModule::Reporter module_reporter(log, dwarf_filename, section_name);
+ DwarfCFIToModule handler(num_dw_regs, &module_reporter, &reader, usu, &summ);
+
+ // Provide the base addresses for .eh_frame encoded pointers, if
+ // possible.
+ reader.SetCFIDataBase(section->sh_addr, cfi);
+ if (got_section) reader.SetDataBase(got_section->sh_addr);
+ if (text_section) reader.SetTextBase(text_section->sh_addr);
+
+ lul::CallFrameInfo::Reporter dwarf_reporter(log, dwarf_filename,
+ section_name);
+ lul::CallFrameInfo parser(cfi, cfi_size, &reader, &handler, &dwarf_reporter,
+ eh_frame);
+ parser.Start();
+
+ return true;
+}
+
+bool LoadELF(const string& obj_file, MmapWrapper* map_wrapper,
+ void** elf_header) {
+ int obj_fd = open(obj_file.c_str(), O_RDONLY);
+ if (obj_fd < 0) {
+ fprintf(stderr, "Failed to open ELF file '%s': %s\n", obj_file.c_str(),
+ strerror(errno));
+ return false;
+ }
+ FDWrapper obj_fd_wrapper(obj_fd);
+ struct stat st;
+ if (fstat(obj_fd, &st) != 0 && st.st_size <= 0) {
+ fprintf(stderr, "Unable to fstat ELF file '%s': %s\n", obj_file.c_str(),
+ strerror(errno));
+ return false;
+ }
+ // Mapping it read-only is good enough. In any case, mapping it
+ // read-write confuses Valgrind's debuginfo acquire/discard
+ // heuristics, making it hard to profile the profiler.
+ void* obj_base = mmap(nullptr, st.st_size, PROT_READ, MAP_PRIVATE, obj_fd, 0);
+ if (obj_base == MAP_FAILED) {
+ fprintf(stderr, "Failed to mmap ELF file '%s': %s\n", obj_file.c_str(),
+ strerror(errno));
+ return false;
+ }
+ map_wrapper->set(obj_base, st.st_size);
+ *elf_header = obj_base;
+ if (!IsValidElf(*elf_header)) {
+ fprintf(stderr, "Not a valid ELF file: %s\n", obj_file.c_str());
+ return false;
+ }
+ return true;
+}
+
+// Get the endianness of ELF_HEADER. If it's invalid, return false.
+template <typename ElfClass>
+bool ElfEndianness(const typename ElfClass::Ehdr* elf_header,
+ bool* big_endian) {
+ if (elf_header->e_ident[EI_DATA] == ELFDATA2LSB) {
+ *big_endian = false;
+ return true;
+ }
+ if (elf_header->e_ident[EI_DATA] == ELFDATA2MSB) {
+ *big_endian = true;
+ return true;
+ }
+
+ fprintf(stderr, "bad data encoding in ELF header: %d\n",
+ elf_header->e_ident[EI_DATA]);
+ return false;
+}
+
+//
+// LoadSymbolsInfo
+//
+// Holds the state between the two calls to LoadSymbols() in case it's necessary
+// to follow the .gnu_debuglink section and load debug information from a
+// different file.
+//
+template <typename ElfClass>
+class LoadSymbolsInfo {
+ public:
+ typedef typename ElfClass::Addr Addr;
+
+ explicit LoadSymbolsInfo(const vector<string>& dbg_dirs)
+ : debug_dirs_(dbg_dirs), has_loading_addr_(false) {}
+
+ // Keeps track of which sections have been loaded so sections don't
+ // accidentally get loaded twice from two different files.
+ void LoadedSection(const string& section) {
+ if (loaded_sections_.count(section) == 0) {
+ loaded_sections_.insert(section);
+ } else {
+ fprintf(stderr, "Section %s has already been loaded.\n", section.c_str());
+ }
+ }
+
+ string debuglink_file() const { return debuglink_file_; }
+
+ private:
+ const vector<string>& debug_dirs_; // Directories in which to
+ // search for the debug ELF file.
+
+ string debuglink_file_; // Full path to the debug ELF file.
+
+ bool has_loading_addr_; // Indicate if LOADING_ADDR_ is valid.
+
+ set<string> loaded_sections_; // Tracks the Loaded ELF sections
+ // between calls to LoadSymbols().
+};
+
+// Find the preferred loading address of the binary.
+template <typename ElfClass>
+typename ElfClass::Addr GetLoadingAddress(
+ const typename ElfClass::Phdr* program_headers, int nheader) {
+ typedef typename ElfClass::Phdr Phdr;
+
+ // For non-PIC executables (e_type == ET_EXEC), the load address is
+ // the start address of the first PT_LOAD segment. (ELF requires
+ // the segments to be sorted by load address.) For PIC executables
+ // and dynamic libraries (e_type == ET_DYN), this address will
+ // normally be zero.
+ for (int i = 0; i < nheader; ++i) {
+ const Phdr& header = program_headers[i];
+ if (header.p_type == PT_LOAD) return header.p_vaddr;
+ }
+ return 0;
+}
+
+template <typename ElfClass>
+bool LoadSymbols(const string& obj_file, const bool big_endian,
+ const typename ElfClass::Ehdr* elf_header,
+ const bool read_gnu_debug_link,
+ LoadSymbolsInfo<ElfClass>* info, SecMap* smap, void* rx_avma,
+ size_t rx_size, UniqueStringUniverse* usu,
+ void (*log)(const char*)) {
+ typedef typename ElfClass::Phdr Phdr;
+ typedef typename ElfClass::Shdr Shdr;
+
+ char buf[500];
+ SprintfLiteral(buf, "LoadSymbols: BEGIN %s\n", obj_file.c_str());
+ buf[sizeof(buf) - 1] = 0;
+ log(buf);
+
+ // This is how the text bias is calculated.
+ // BEGIN CALCULATE BIAS
+ uintptr_t loading_addr = GetLoadingAddress<ElfClass>(
+ GetOffset<ElfClass, Phdr>(elf_header, elf_header->e_phoff),
+ elf_header->e_phnum);
+ uintptr_t text_bias = ((uintptr_t)rx_avma) - loading_addr;
+ SprintfLiteral(buf, "LoadSymbols: rx_avma=%llx, text_bias=%llx",
+ (unsigned long long int)(uintptr_t)rx_avma,
+ (unsigned long long int)text_bias);
+ buf[sizeof(buf) - 1] = 0;
+ log(buf);
+ // END CALCULATE BIAS
+
+ const Shdr* sections =
+ GetOffset<ElfClass, Shdr>(elf_header, elf_header->e_shoff);
+ const Shdr* section_names = sections + elf_header->e_shstrndx;
+ const char* names =
+ GetOffset<ElfClass, char>(elf_header, section_names->sh_offset);
+ const char* names_end = names + section_names->sh_size;
+ bool found_usable_info = false;
+
+ // Dwarf Call Frame Information (CFI) is actually independent from
+ // the other DWARF debugging information, and can be used alone.
+ const Shdr* dwarf_cfi_section =
+ FindElfSectionByName<ElfClass>(".debug_frame", SHT_PROGBITS, sections,
+ names, names_end, elf_header->e_shnum);
+ if (dwarf_cfi_section) {
+ // Ignore the return value of this function; even without call frame
+ // information, the other debugging information could be perfectly
+ // useful.
+ info->LoadedSection(".debug_frame");
+ bool result = LoadDwarfCFI<ElfClass>(obj_file, elf_header, ".debug_frame",
+ dwarf_cfi_section, false, 0, 0,
+ big_endian, smap, text_bias, usu, log);
+ found_usable_info = found_usable_info || result;
+ if (result) log("LoadSymbols: read CFI from .debug_frame");
+ }
+
+ // Linux C++ exception handling information can also provide
+ // unwinding data.
+ const Shdr* eh_frame_section =
+ FindElfSectionByName<ElfClass>(".eh_frame", SHT_PROGBITS, sections, names,
+ names_end, elf_header->e_shnum);
+#if defined(GP_PLAT_amd64_linux) || defined(GP_PLAT_amd64_android)
+ if (!eh_frame_section) {
+ // Possibly depending on which linker created libxul.so, on x86_64-linux
+ // and -android, .eh_frame may instead have the SHT_X86_64_UNWIND type.
+ eh_frame_section =
+ FindElfSectionByName<ElfClass>(".eh_frame", SHT_X86_64_UNWIND, sections,
+ names, names_end, elf_header->e_shnum);
+ }
+#endif
+ if (eh_frame_section) {
+ // Pointers in .eh_frame data may be relative to the base addresses of
+ // certain sections. Provide those sections if present.
+ const Shdr* got_section = FindElfSectionByName<ElfClass>(
+ ".got", SHT_PROGBITS, sections, names, names_end, elf_header->e_shnum);
+ const Shdr* text_section = FindElfSectionByName<ElfClass>(
+ ".text", SHT_PROGBITS, sections, names, names_end, elf_header->e_shnum);
+ info->LoadedSection(".eh_frame");
+ // As above, ignore the return value of this function.
+ bool result = LoadDwarfCFI<ElfClass>(
+ obj_file, elf_header, ".eh_frame", eh_frame_section, true, got_section,
+ text_section, big_endian, smap, text_bias, usu, log);
+ found_usable_info = found_usable_info || result;
+ if (result) log("LoadSymbols: read CFI from .eh_frame");
+ }
+
+ SprintfLiteral(buf, "LoadSymbols: END %s\n", obj_file.c_str());
+ buf[sizeof(buf) - 1] = 0;
+ log(buf);
+
+ return found_usable_info;
+}
+
+// Return the breakpad symbol file identifier for the architecture of
+// ELF_HEADER.
+template <typename ElfClass>
+const char* ElfArchitecture(const typename ElfClass::Ehdr* elf_header) {
+ typedef typename ElfClass::Half Half;
+ Half arch = elf_header->e_machine;
+ switch (arch) {
+ case EM_386:
+ return "x86";
+ case EM_ARM:
+ return "arm";
+ case EM_AARCH64:
+ return "arm64";
+ case EM_MIPS:
+ return "mips";
+ case EM_PPC64:
+ return "ppc64";
+ case EM_PPC:
+ return "ppc";
+ case EM_S390:
+ return "s390";
+ case EM_SPARC:
+ return "sparc";
+ case EM_SPARCV9:
+ return "sparcv9";
+ case EM_X86_64:
+ return "x86_64";
+ default:
+ return NULL;
+ }
+}
+
+// Format the Elf file identifier in IDENTIFIER as a UUID with the
+// dashes removed.
+string FormatIdentifier(unsigned char identifier[16]) {
+ char identifier_str[40];
+ lul::FileID::ConvertIdentifierToString(identifier, identifier_str,
+ sizeof(identifier_str));
+ string id_no_dash;
+ for (int i = 0; identifier_str[i] != '\0'; ++i)
+ if (identifier_str[i] != '-') id_no_dash += identifier_str[i];
+ // Add an extra "0" by the end. PDB files on Windows have an 'age'
+ // number appended to the end of the file identifier; this isn't
+ // really used or necessary on other platforms, but be consistent.
+ id_no_dash += '0';
+ return id_no_dash;
+}
+
+// Return the non-directory portion of FILENAME: the portion after the
+// last slash, or the whole filename if there are no slashes.
+string BaseFileName(const string& filename) {
+ // Lots of copies! basename's behavior is less than ideal.
+ char* c_filename = strdup(filename.c_str());
+ string base = basename(c_filename);
+ free(c_filename);
+ return base;
+}
+
+template <typename ElfClass>
+bool ReadSymbolDataElfClass(const typename ElfClass::Ehdr* elf_header,
+ const string& obj_filename,
+ const vector<string>& debug_dirs, SecMap* smap,
+ void* rx_avma, size_t rx_size,
+ UniqueStringUniverse* usu,
+ void (*log)(const char*)) {
+ typedef typename ElfClass::Ehdr Ehdr;
+
+ unsigned char identifier[16];
+ if (!lul ::FileID::ElfFileIdentifierFromMappedFile(elf_header, identifier)) {
+ fprintf(stderr, "%s: unable to generate file identifier\n",
+ obj_filename.c_str());
+ return false;
+ }
+
+ const char* architecture = ElfArchitecture<ElfClass>(elf_header);
+ if (!architecture) {
+ fprintf(stderr, "%s: unrecognized ELF machine architecture: %d\n",
+ obj_filename.c_str(), elf_header->e_machine);
+ return false;
+ }
+
+ // Figure out what endianness this file is.
+ bool big_endian;
+ if (!ElfEndianness<ElfClass>(elf_header, &big_endian)) return false;
+
+ string name = BaseFileName(obj_filename);
+ string os = "Linux";
+ string id = FormatIdentifier(identifier);
+
+ LoadSymbolsInfo<ElfClass> info(debug_dirs);
+ if (!LoadSymbols<ElfClass>(obj_filename, big_endian, elf_header,
+ !debug_dirs.empty(), &info, smap, rx_avma, rx_size,
+ usu, log)) {
+ const string debuglink_file = info.debuglink_file();
+ if (debuglink_file.empty()) return false;
+
+ // Load debuglink ELF file.
+ fprintf(stderr, "Found debugging info in %s\n", debuglink_file.c_str());
+ MmapWrapper debug_map_wrapper;
+ Ehdr* debug_elf_header = NULL;
+ if (!LoadELF(debuglink_file, &debug_map_wrapper,
+ reinterpret_cast<void**>(&debug_elf_header)))
+ return false;
+ // Sanity checks to make sure everything matches up.
+ const char* debug_architecture =
+ ElfArchitecture<ElfClass>(debug_elf_header);
+ if (!debug_architecture) {
+ fprintf(stderr, "%s: unrecognized ELF machine architecture: %d\n",
+ debuglink_file.c_str(), debug_elf_header->e_machine);
+ return false;
+ }
+ if (strcmp(architecture, debug_architecture)) {
+ fprintf(stderr,
+ "%s with ELF machine architecture %s does not match "
+ "%s with ELF architecture %s\n",
+ debuglink_file.c_str(), debug_architecture, obj_filename.c_str(),
+ architecture);
+ return false;
+ }
+
+ bool debug_big_endian;
+ if (!ElfEndianness<ElfClass>(debug_elf_header, &debug_big_endian))
+ return false;
+ if (debug_big_endian != big_endian) {
+ fprintf(stderr, "%s and %s does not match in endianness\n",
+ obj_filename.c_str(), debuglink_file.c_str());
+ return false;
+ }
+
+ if (!LoadSymbols<ElfClass>(debuglink_file, debug_big_endian,
+ debug_elf_header, false, &info, smap, rx_avma,
+ rx_size, usu, log)) {
+ return false;
+ }
+ }
+
+ return true;
+}
+
+} // namespace
+
+namespace lul {
+
+bool ReadSymbolDataInternal(const uint8_t* obj_file, const string& obj_filename,
+ const vector<string>& debug_dirs, SecMap* smap,
+ void* rx_avma, size_t rx_size,
+ UniqueStringUniverse* usu,
+ void (*log)(const char*)) {
+ if (!IsValidElf(obj_file)) {
+ fprintf(stderr, "Not a valid ELF file: %s\n", obj_filename.c_str());
+ return false;
+ }
+
+ int elfclass = ElfClass(obj_file);
+ if (elfclass == ELFCLASS32) {
+ return ReadSymbolDataElfClass<ElfClass32>(
+ reinterpret_cast<const Elf32_Ehdr*>(obj_file), obj_filename, debug_dirs,
+ smap, rx_avma, rx_size, usu, log);
+ }
+ if (elfclass == ELFCLASS64) {
+ return ReadSymbolDataElfClass<ElfClass64>(
+ reinterpret_cast<const Elf64_Ehdr*>(obj_file), obj_filename, debug_dirs,
+ smap, rx_avma, rx_size, usu, log);
+ }
+
+ return false;
+}
+
+bool ReadSymbolData(const string& obj_file, const vector<string>& debug_dirs,
+ SecMap* smap, void* rx_avma, size_t rx_size,
+ UniqueStringUniverse* usu, void (*log)(const char*)) {
+ MmapWrapper map_wrapper;
+ void* elf_header = NULL;
+ if (!LoadELF(obj_file, &map_wrapper, &elf_header)) return false;
+
+ return ReadSymbolDataInternal(reinterpret_cast<uint8_t*>(elf_header),
+ obj_file, debug_dirs, smap, rx_avma, rx_size,
+ usu, log);
+}
+
+namespace {
+
+template <typename ElfClass>
+void FindElfClassSection(const char* elf_base, const char* section_name,
+ typename ElfClass::Word section_type,
+ const void** section_start, int* section_size) {
+ typedef typename ElfClass::Ehdr Ehdr;
+ typedef typename ElfClass::Shdr Shdr;
+
+ MOZ_ASSERT(elf_base);
+ MOZ_ASSERT(section_start);
+ MOZ_ASSERT(section_size);
+
+ MOZ_ASSERT(strncmp(elf_base, ELFMAG, SELFMAG) == 0);
+
+ const Ehdr* elf_header = reinterpret_cast<const Ehdr*>(elf_base);
+ MOZ_ASSERT(elf_header->e_ident[EI_CLASS] == ElfClass::kClass);
+
+ const Shdr* sections =
+ GetOffset<ElfClass, Shdr>(elf_header, elf_header->e_shoff);
+ const Shdr* section_names = sections + elf_header->e_shstrndx;
+ const char* names =
+ GetOffset<ElfClass, char>(elf_header, section_names->sh_offset);
+ const char* names_end = names + section_names->sh_size;
+
+ const Shdr* section =
+ FindElfSectionByName<ElfClass>(section_name, section_type, sections,
+ names, names_end, elf_header->e_shnum);
+
+ if (section != NULL && section->sh_size > 0) {
+ *section_start = elf_base + section->sh_offset;
+ *section_size = section->sh_size;
+ }
+}
+
+template <typename ElfClass>
+void FindElfClassSegment(const char* elf_base,
+ typename ElfClass::Word segment_type,
+ const void** segment_start, int* segment_size) {
+ typedef typename ElfClass::Ehdr Ehdr;
+ typedef typename ElfClass::Phdr Phdr;
+
+ MOZ_ASSERT(elf_base);
+ MOZ_ASSERT(segment_start);
+ MOZ_ASSERT(segment_size);
+
+ MOZ_ASSERT(strncmp(elf_base, ELFMAG, SELFMAG) == 0);
+
+ const Ehdr* elf_header = reinterpret_cast<const Ehdr*>(elf_base);
+ MOZ_ASSERT(elf_header->e_ident[EI_CLASS] == ElfClass::kClass);
+
+ const Phdr* phdrs =
+ GetOffset<ElfClass, Phdr>(elf_header, elf_header->e_phoff);
+
+ for (int i = 0; i < elf_header->e_phnum; ++i) {
+ if (phdrs[i].p_type == segment_type) {
+ *segment_start = elf_base + phdrs[i].p_offset;
+ *segment_size = phdrs[i].p_filesz;
+ return;
+ }
+ }
+}
+
+} // namespace
+
+bool IsValidElf(const void* elf_base) {
+ return strncmp(reinterpret_cast<const char*>(elf_base), ELFMAG, SELFMAG) == 0;
+}
+
+int ElfClass(const void* elf_base) {
+ const ElfW(Ehdr)* elf_header = reinterpret_cast<const ElfW(Ehdr)*>(elf_base);
+
+ return elf_header->e_ident[EI_CLASS];
+}
+
+bool FindElfSection(const void* elf_mapped_base, const char* section_name,
+ uint32_t section_type, const void** section_start,
+ int* section_size, int* elfclass) {
+ MOZ_ASSERT(elf_mapped_base);
+ MOZ_ASSERT(section_start);
+ MOZ_ASSERT(section_size);
+
+ *section_start = NULL;
+ *section_size = 0;
+
+ if (!IsValidElf(elf_mapped_base)) return false;
+
+ int cls = ElfClass(elf_mapped_base);
+ if (elfclass) {
+ *elfclass = cls;
+ }
+
+ const char* elf_base = static_cast<const char*>(elf_mapped_base);
+
+ if (cls == ELFCLASS32) {
+ FindElfClassSection<ElfClass32>(elf_base, section_name, section_type,
+ section_start, section_size);
+ return *section_start != NULL;
+ } else if (cls == ELFCLASS64) {
+ FindElfClassSection<ElfClass64>(elf_base, section_name, section_type,
+ section_start, section_size);
+ return *section_start != NULL;
+ }
+
+ return false;
+}
+
+bool FindElfSegment(const void* elf_mapped_base, uint32_t segment_type,
+ const void** segment_start, int* segment_size,
+ int* elfclass) {
+ MOZ_ASSERT(elf_mapped_base);
+ MOZ_ASSERT(segment_start);
+ MOZ_ASSERT(segment_size);
+
+ *segment_start = NULL;
+ *segment_size = 0;
+
+ if (!IsValidElf(elf_mapped_base)) return false;
+
+ int cls = ElfClass(elf_mapped_base);
+ if (elfclass) {
+ *elfclass = cls;
+ }
+
+ const char* elf_base = static_cast<const char*>(elf_mapped_base);
+
+ if (cls == ELFCLASS32) {
+ FindElfClassSegment<ElfClass32>(elf_base, segment_type, segment_start,
+ segment_size);
+ return *segment_start != NULL;
+ } else if (cls == ELFCLASS64) {
+ FindElfClassSegment<ElfClass64>(elf_base, segment_type, segment_start,
+ segment_size);
+ return *segment_start != NULL;
+ }
+
+ return false;
+}
+
+// (derived from)
+// file_id.cc: Return a unique identifier for a file
+//
+// See file_id.h for documentation
+//
+
+// ELF note name and desc are 32-bits word padded.
+#define NOTE_PADDING(a) ((a + 3) & ~3)
+
+// These functions are also used inside the crashed process, so be safe
+// and use the syscall/libc wrappers instead of direct syscalls or libc.
+
+template <typename ElfClass>
+static bool ElfClassBuildIDNoteIdentifier(const void* section, int length,
+ uint8_t identifier[kMDGUIDSize]) {
+ typedef typename ElfClass::Nhdr Nhdr;
+
+ const void* section_end = reinterpret_cast<const char*>(section) + length;
+ const Nhdr* note_header = reinterpret_cast<const Nhdr*>(section);
+ while (reinterpret_cast<const void*>(note_header) < section_end) {
+ if (note_header->n_type == NT_GNU_BUILD_ID) break;
+ note_header = reinterpret_cast<const Nhdr*>(
+ reinterpret_cast<const char*>(note_header) + sizeof(Nhdr) +
+ NOTE_PADDING(note_header->n_namesz) +
+ NOTE_PADDING(note_header->n_descsz));
+ }
+ if (reinterpret_cast<const void*>(note_header) >= section_end ||
+ note_header->n_descsz == 0) {
+ return false;
+ }
+
+ const char* build_id = reinterpret_cast<const char*>(note_header) +
+ sizeof(Nhdr) + NOTE_PADDING(note_header->n_namesz);
+ // Copy as many bits of the build ID as will fit
+ // into the GUID space.
+ memset(identifier, 0, kMDGUIDSize);
+ memcpy(identifier, build_id,
+ std::min(kMDGUIDSize, (size_t)note_header->n_descsz));
+
+ return true;
+}
+
+// Attempt to locate a .note.gnu.build-id section in an ELF binary
+// and copy as many bytes of it as will fit into |identifier|.
+static bool FindElfBuildIDNote(const void* elf_mapped_base,
+ uint8_t identifier[kMDGUIDSize]) {
+ void* note_section;
+ int note_size, elfclass;
+ if ((!FindElfSegment(elf_mapped_base, PT_NOTE, (const void**)&note_section,
+ &note_size, &elfclass) ||
+ note_size == 0) &&
+ (!FindElfSection(elf_mapped_base, ".note.gnu.build-id", SHT_NOTE,
+ (const void**)&note_section, &note_size, &elfclass) ||
+ note_size == 0)) {
+ return false;
+ }
+
+ if (elfclass == ELFCLASS32) {
+ return ElfClassBuildIDNoteIdentifier<ElfClass32>(note_section, note_size,
+ identifier);
+ } else if (elfclass == ELFCLASS64) {
+ return ElfClassBuildIDNoteIdentifier<ElfClass64>(note_section, note_size,
+ identifier);
+ }
+
+ return false;
+}
+
+// Attempt to locate the .text section of an ELF binary and generate
+// a simple hash by XORing the first page worth of bytes into |identifier|.
+static bool HashElfTextSection(const void* elf_mapped_base,
+ uint8_t identifier[kMDGUIDSize]) {
+ void* text_section;
+ int text_size;
+ if (!FindElfSection(elf_mapped_base, ".text", SHT_PROGBITS,
+ (const void**)&text_section, &text_size, NULL) ||
+ text_size == 0) {
+ return false;
+ }
+
+ memset(identifier, 0, kMDGUIDSize);
+ const uint8_t* ptr = reinterpret_cast<const uint8_t*>(text_section);
+ const uint8_t* ptr_end = ptr + std::min(text_size, 4096);
+ while (ptr < ptr_end) {
+ for (unsigned i = 0; i < kMDGUIDSize; i++) identifier[i] ^= ptr[i];
+ ptr += kMDGUIDSize;
+ }
+ return true;
+}
+
+// static
+bool FileID::ElfFileIdentifierFromMappedFile(const void* base,
+ uint8_t identifier[kMDGUIDSize]) {
+ // Look for a build id note first.
+ if (FindElfBuildIDNote(base, identifier)) return true;
+
+ // Fall back on hashing the first page of the text section.
+ return HashElfTextSection(base, identifier);
+}
+
+// static
+void FileID::ConvertIdentifierToString(const uint8_t identifier[kMDGUIDSize],
+ char* buffer, int buffer_length) {
+ uint8_t identifier_swapped[kMDGUIDSize];
+
+ // Endian-ness swap to match dump processor expectation.
+ memcpy(identifier_swapped, identifier, kMDGUIDSize);
+ uint32_t* data1 = reinterpret_cast<uint32_t*>(identifier_swapped);
+ *data1 = htonl(*data1);
+ uint16_t* data2 = reinterpret_cast<uint16_t*>(identifier_swapped + 4);
+ *data2 = htons(*data2);
+ uint16_t* data3 = reinterpret_cast<uint16_t*>(identifier_swapped + 6);
+ *data3 = htons(*data3);
+
+ int buffer_idx = 0;
+ for (unsigned int idx = 0;
+ (buffer_idx < buffer_length) && (idx < kMDGUIDSize); ++idx) {
+ int hi = (identifier_swapped[idx] >> 4) & 0x0F;
+ int lo = (identifier_swapped[idx]) & 0x0F;
+
+ if (idx == 4 || idx == 6 || idx == 8 || idx == 10)
+ buffer[buffer_idx++] = '-';
+
+ buffer[buffer_idx++] = (hi >= 10) ? 'A' + hi - 10 : '0' + hi;
+ buffer[buffer_idx++] = (lo >= 10) ? 'A' + lo - 10 : '0' + lo;
+ }
+
+ // NULL terminate
+ buffer[(buffer_idx < buffer_length) ? buffer_idx : buffer_idx - 1] = 0;
+}
+
+} // namespace lul
diff --git a/tools/profiler/lul/LulElfExt.h b/tools/profiler/lul/LulElfExt.h
new file mode 100644
index 0000000000..73d9ff7f15
--- /dev/null
+++ b/tools/profiler/lul/LulElfExt.h
@@ -0,0 +1,69 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+
+// Copyright (c) 2006, 2011, 2012 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.
+
+// This file is derived from the following files in
+// toolkit/crashreporter/google-breakpad:
+// src/common/linux/dump_symbols.h
+
+#ifndef LulElfExt_h
+#define LulElfExt_h
+
+// These two functions are the external interface to the
+// ELF/Dwarf/EXIDX reader.
+
+#include "LulMainInt.h"
+
+using lul::SecMap;
+
+namespace lul {
+
+class UniqueStringUniverse;
+
+// Find all the unwind information in OBJ_FILE, an ELF executable
+// or shared library, and add it to SMAP.
+bool ReadSymbolData(const std::string& obj_file,
+ const std::vector<std::string>& debug_dirs, SecMap* smap,
+ void* rx_avma, size_t rx_size, UniqueStringUniverse* usu,
+ void (*log)(const char*));
+
+// The same as ReadSymbolData, except that OBJ_FILE is assumed to
+// point to a mapped-in image of OBJ_FILENAME.
+bool ReadSymbolDataInternal(const uint8_t* obj_file,
+ const std::string& obj_filename,
+ const std::vector<std::string>& debug_dirs,
+ SecMap* smap, void* rx_avma, size_t rx_size,
+ UniqueStringUniverse* usu,
+ void (*log)(const char*));
+
+} // namespace lul
+
+#endif // LulElfExt_h
diff --git a/tools/profiler/lul/LulElfInt.h b/tools/profiler/lul/LulElfInt.h
new file mode 100644
index 0000000000..31ffba8ff0
--- /dev/null
+++ b/tools/profiler/lul/LulElfInt.h
@@ -0,0 +1,218 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+
+// Copyright (c) 2006, 2012, 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.
+
+// This file is derived from the following files in
+// toolkit/crashreporter/google-breakpad:
+// src/common/android/include/elf.h
+// src/common/linux/elfutils.h
+// src/common/linux/file_id.h
+// src/common/linux/elfutils-inl.h
+
+#ifndef LulElfInt_h
+#define LulElfInt_h
+
+// This header defines functions etc internal to the ELF reader. It
+// should not be included outside of LulElf.cpp.
+
+#include <elf.h>
+#include <stdlib.h>
+
+#include "mozilla/Assertions.h"
+
+#include "PlatformMacros.h"
+
+// (derived from)
+// elfutils.h: Utilities for dealing with ELF files.
+//
+#include <link.h>
+
+#if defined(GP_OS_android)
+
+// From toolkit/crashreporter/google-breakpad/src/common/android/include/elf.h
+// The Android headers don't always define this constant.
+# ifndef EM_X86_64
+# define EM_X86_64 62
+# endif
+
+# ifndef EM_PPC64
+# define EM_PPC64 21
+# endif
+
+# ifndef EM_S390
+# define EM_S390 22
+# endif
+
+# ifndef NT_GNU_BUILD_ID
+# define NT_GNU_BUILD_ID 3
+# endif
+
+# ifndef ElfW
+# define ElfW(type) _ElfW(Elf, ELFSIZE, type)
+# define _ElfW(e, w, t) _ElfW_1(e, w, _##t)
+# define _ElfW_1(e, w, t) e##w##t
+# endif
+
+#endif
+
+#if defined(GP_OS_freebsd)
+
+# ifndef ElfW
+# define ElfW(type) Elf_##type
+# endif
+
+#endif
+
+namespace lul {
+
+// Traits classes so consumers can write templatized code to deal
+// with specific ELF bits.
+struct ElfClass32 {
+ typedef Elf32_Addr Addr;
+ typedef Elf32_Ehdr Ehdr;
+ typedef Elf32_Nhdr Nhdr;
+ typedef Elf32_Phdr Phdr;
+ typedef Elf32_Shdr Shdr;
+ typedef Elf32_Half Half;
+ typedef Elf32_Off Off;
+ typedef Elf32_Word Word;
+ static const int kClass = ELFCLASS32;
+ static const size_t kAddrSize = sizeof(Elf32_Addr);
+};
+
+struct ElfClass64 {
+ typedef Elf64_Addr Addr;
+ typedef Elf64_Ehdr Ehdr;
+ typedef Elf64_Nhdr Nhdr;
+ typedef Elf64_Phdr Phdr;
+ typedef Elf64_Shdr Shdr;
+ typedef Elf64_Half Half;
+ typedef Elf64_Off Off;
+ typedef Elf64_Word Word;
+ static const int kClass = ELFCLASS64;
+ static const size_t kAddrSize = sizeof(Elf64_Addr);
+};
+
+bool IsValidElf(const void* elf_header);
+int ElfClass(const void* elf_base);
+
+// Attempt to find a section named |section_name| of type |section_type|
+// in the ELF binary data at |elf_mapped_base|. On success, returns true
+// and sets |*section_start| to point to the start of the section data,
+// and |*section_size| to the size of the section's data. If |elfclass|
+// is not NULL, set |*elfclass| to the ELF file class.
+bool FindElfSection(const void* elf_mapped_base, const char* section_name,
+ uint32_t section_type, const void** section_start,
+ int* section_size, int* elfclass);
+
+// Internal helper method, exposed for convenience for callers
+// that already have more info.
+template <typename ElfClass>
+const typename ElfClass::Shdr* FindElfSectionByName(
+ const char* name, typename ElfClass::Word section_type,
+ const typename ElfClass::Shdr* sections, const char* section_names,
+ const char* names_end, int nsection);
+
+// Attempt to find the first segment of type |segment_type| in the ELF
+// binary data at |elf_mapped_base|. On success, returns true and sets
+// |*segment_start| to point to the start of the segment data, and
+// and |*segment_size| to the size of the segment's data. If |elfclass|
+// is not NULL, set |*elfclass| to the ELF file class.
+bool FindElfSegment(const void* elf_mapped_base, uint32_t segment_type,
+ const void** segment_start, int* segment_size,
+ int* elfclass);
+
+// Convert an offset from an Elf header into a pointer to the mapped
+// address in the current process. Takes an extra template parameter
+// to specify the return type to avoid having to dynamic_cast the
+// result.
+template <typename ElfClass, typename T>
+const T* GetOffset(const typename ElfClass::Ehdr* elf_header,
+ typename ElfClass::Off offset);
+
+// (derived from)
+// file_id.h: Return a unique identifier for a file
+//
+
+static const size_t kMDGUIDSize = sizeof(MDGUID);
+
+class FileID {
+ public:
+ // Load the identifier for the elf file mapped into memory at |base| into
+ // |identifier|. Return false if the identifier could not be created for the
+ // file.
+ static bool ElfFileIdentifierFromMappedFile(const void* base,
+ uint8_t identifier[kMDGUIDSize]);
+
+ // Convert the |identifier| data to a NULL terminated string. The string will
+ // be formatted as a UUID (e.g., 22F065BB-FC9C-49F7-80FE-26A7CEBD7BCE).
+ // The |buffer| should be at least 37 bytes long to receive all of the data
+ // and termination. Shorter buffers will contain truncated data.
+ static void ConvertIdentifierToString(const uint8_t identifier[kMDGUIDSize],
+ char* buffer, int buffer_length);
+};
+
+template <typename ElfClass, typename T>
+const T* GetOffset(const typename ElfClass::Ehdr* elf_header,
+ typename ElfClass::Off offset) {
+ return reinterpret_cast<const T*>(reinterpret_cast<uintptr_t>(elf_header) +
+ offset);
+}
+
+template <typename ElfClass>
+const typename ElfClass::Shdr* FindElfSectionByName(
+ const char* name, typename ElfClass::Word section_type,
+ const typename ElfClass::Shdr* sections, const char* section_names,
+ const char* names_end, int nsection) {
+ MOZ_ASSERT(name != NULL);
+ MOZ_ASSERT(sections != NULL);
+ MOZ_ASSERT(nsection > 0);
+
+ int name_len = strlen(name);
+ if (name_len == 0) return NULL;
+
+ for (int i = 0; i < nsection; ++i) {
+ const char* section_name = section_names + sections[i].sh_name;
+ if (sections[i].sh_type == section_type &&
+ names_end - section_name >= name_len + 1 &&
+ strcmp(name, section_name) == 0) {
+ return sections + i;
+ }
+ }
+ return NULL;
+}
+
+} // namespace lul
+
+// And finally, the external interface, offered to LulMain.cpp
+#include "LulElfExt.h"
+
+#endif // LulElfInt_h
diff --git a/tools/profiler/lul/LulMain.cpp b/tools/profiler/lul/LulMain.cpp
new file mode 100644
index 0000000000..7cf5508234
--- /dev/null
+++ b/tools/profiler/lul/LulMain.cpp
@@ -0,0 +1,2079 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "LulMain.h"
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h> // write(), only for testing LUL
+
+#include <algorithm> // std::sort
+#include <string>
+#include <utility>
+
+#include "GeckoProfiler.h" // for profiler_current_thread_id()
+#include "LulCommonExt.h"
+#include "LulElfExt.h"
+#include "LulMainInt.h"
+#include "mozilla/ArrayUtils.h"
+#include "mozilla/Assertions.h"
+#include "mozilla/CheckedInt.h"
+#include "mozilla/DebugOnly.h"
+#include "mozilla/MemoryChecking.h"
+#include "mozilla/Sprintf.h"
+#include "mozilla/UniquePtr.h"
+#include "mozilla/Unused.h"
+
+// Set this to 1 for verbose logging
+#define DEBUG_MAIN 0
+
+namespace lul {
+
+using mozilla::CheckedInt;
+using mozilla::DebugOnly;
+using mozilla::MallocSizeOf;
+using mozilla::Unused;
+using std::pair;
+using std::string;
+using std::vector;
+
+// WARNING WARNING WARNING WARNING WARNING WARNING WARNING WARNING
+//
+// Some functions in this file are marked RUNS IN NO-MALLOC CONTEXT.
+// Any such function -- and, hence, the transitive closure of those
+// reachable from it -- must not do any dynamic memory allocation.
+// Doing so risks deadlock. There is exactly one root function for
+// the transitive closure: Lul::Unwind.
+//
+// WARNING WARNING WARNING WARNING WARNING WARNING WARNING WARNING
+
+////////////////////////////////////////////////////////////////
+// RuleSet //
+////////////////////////////////////////////////////////////////
+
+static const char* NameOf_DW_REG(int16_t aReg) {
+ switch (aReg) {
+ case DW_REG_CFA:
+ return "cfa";
+#if defined(GP_ARCH_amd64) || defined(GP_ARCH_x86)
+ case DW_REG_INTEL_XBP:
+ return "xbp";
+ case DW_REG_INTEL_XSP:
+ return "xsp";
+ case DW_REG_INTEL_XIP:
+ return "xip";
+#elif defined(GP_ARCH_arm)
+ case DW_REG_ARM_R7:
+ return "r7";
+ case DW_REG_ARM_R11:
+ return "r11";
+ case DW_REG_ARM_R12:
+ return "r12";
+ case DW_REG_ARM_R13:
+ return "r13";
+ case DW_REG_ARM_R14:
+ return "r14";
+ case DW_REG_ARM_R15:
+ return "r15";
+#elif defined(GP_ARCH_arm64)
+ case DW_REG_AARCH64_X29:
+ return "x29";
+ case DW_REG_AARCH64_X30:
+ return "x30";
+ case DW_REG_AARCH64_SP:
+ return "sp";
+#elif defined(GP_ARCH_mips64)
+ case DW_REG_MIPS_SP:
+ return "sp";
+ case DW_REG_MIPS_FP:
+ return "fp";
+ case DW_REG_MIPS_PC:
+ return "pc";
+#else
+# error "Unsupported arch"
+#endif
+ default:
+ return "???";
+ }
+}
+
+string LExpr::ShowRule(const char* aNewReg) const {
+ char buf[64];
+ string res = string(aNewReg) + "=";
+ switch (mHow) {
+ case UNKNOWN:
+ res += "Unknown";
+ break;
+ case NODEREF:
+ SprintfLiteral(buf, "%s+%d", NameOf_DW_REG(mReg), (int)mOffset);
+ res += buf;
+ break;
+ case DEREF:
+ SprintfLiteral(buf, "*(%s+%d)", NameOf_DW_REG(mReg), (int)mOffset);
+ res += buf;
+ break;
+ case PFXEXPR:
+ SprintfLiteral(buf, "PfxExpr-at-%d", (int)mOffset);
+ res += buf;
+ break;
+ default:
+ res += "???";
+ break;
+ }
+ return res;
+}
+
+void RuleSet::Print(uintptr_t avma, uintptr_t len,
+ void (*aLog)(const char*)) const {
+ char buf[96];
+ SprintfLiteral(buf, "[%llx .. %llx]: let ", (unsigned long long int)avma,
+ (unsigned long long int)(avma + len - 1));
+ string res = string(buf);
+ res += mCfaExpr.ShowRule("cfa");
+ res += " in";
+ // For each reg we care about, print the recovery expression.
+#if defined(GP_ARCH_amd64) || defined(GP_ARCH_x86)
+ res += mXipExpr.ShowRule(" RA");
+ res += mXspExpr.ShowRule(" SP");
+ res += mXbpExpr.ShowRule(" BP");
+#elif defined(GP_ARCH_arm)
+ res += mR15expr.ShowRule(" R15");
+ res += mR7expr.ShowRule(" R7");
+ res += mR11expr.ShowRule(" R11");
+ res += mR12expr.ShowRule(" R12");
+ res += mR13expr.ShowRule(" R13");
+ res += mR14expr.ShowRule(" R14");
+#elif defined(GP_ARCH_arm64)
+ res += mX29expr.ShowRule(" X29");
+ res += mX30expr.ShowRule(" X30");
+ res += mSPexpr.ShowRule(" SP");
+#elif defined(GP_ARCH_mips64)
+ res += mPCexpr.ShowRule(" PC");
+ res += mSPexpr.ShowRule(" SP");
+ res += mFPexpr.ShowRule(" FP");
+#else
+# error "Unsupported arch"
+#endif
+ aLog(res.c_str());
+}
+
+LExpr* RuleSet::ExprForRegno(DW_REG_NUMBER aRegno) {
+ switch (aRegno) {
+ case DW_REG_CFA:
+ return &mCfaExpr;
+#if defined(GP_ARCH_amd64) || defined(GP_ARCH_x86)
+ case DW_REG_INTEL_XIP:
+ return &mXipExpr;
+ case DW_REG_INTEL_XSP:
+ return &mXspExpr;
+ case DW_REG_INTEL_XBP:
+ return &mXbpExpr;
+#elif defined(GP_ARCH_arm)
+ case DW_REG_ARM_R15:
+ return &mR15expr;
+ case DW_REG_ARM_R14:
+ return &mR14expr;
+ case DW_REG_ARM_R13:
+ return &mR13expr;
+ case DW_REG_ARM_R12:
+ return &mR12expr;
+ case DW_REG_ARM_R11:
+ return &mR11expr;
+ case DW_REG_ARM_R7:
+ return &mR7expr;
+#elif defined(GP_ARCH_arm64)
+ case DW_REG_AARCH64_X29:
+ return &mX29expr;
+ case DW_REG_AARCH64_X30:
+ return &mX30expr;
+ case DW_REG_AARCH64_SP:
+ return &mSPexpr;
+#elif defined(GP_ARCH_mips64)
+ case DW_REG_MIPS_SP:
+ return &mSPexpr;
+ case DW_REG_MIPS_FP:
+ return &mFPexpr;
+ case DW_REG_MIPS_PC:
+ return &mPCexpr;
+#else
+# error "Unknown arch"
+#endif
+ default:
+ return nullptr;
+ }
+}
+
+RuleSet::RuleSet() {
+ // All fields are of type LExpr and so are initialised by LExpr::LExpr().
+}
+
+////////////////////////////////////////////////////////////////
+// SecMap //
+////////////////////////////////////////////////////////////////
+
+// See header file LulMainInt.h for comments about invariants.
+
+SecMap::SecMap(uintptr_t mapStartAVMA, uint32_t mapLen,
+ void (*aLog)(const char*))
+ : mUsable(false),
+ mUniqifier(new mozilla::HashMap<RuleSet, uint32_t, RuleSet,
+ InfallibleAllocPolicy>),
+ mLog(aLog) {
+ if (mapLen == 0) {
+ // Degenerate case.
+ mMapMinAVMA = 1;
+ mMapMaxAVMA = 0;
+ } else {
+ mMapMinAVMA = mapStartAVMA;
+ mMapMaxAVMA = mapStartAVMA + (uintptr_t)mapLen - 1;
+ }
+}
+
+SecMap::~SecMap() {
+ mExtents.clear();
+ mDictionary.clear();
+ if (mUniqifier) {
+ mUniqifier->clear();
+ mUniqifier = nullptr;
+ }
+}
+
+// RUNS IN NO-MALLOC CONTEXT
+RuleSet* SecMap::FindRuleSet(uintptr_t ia) {
+ // Binary search mExtents to find one that brackets |ia|.
+ // lo and hi need to be signed, else the loop termination tests
+ // don't work properly. Note that this works correctly even when
+ // mExtents.size() == 0.
+
+ // Can't do this until the array has been sorted and preened.
+ MOZ_ASSERT(mUsable);
+
+ long int lo = 0;
+ long int hi = (long int)mExtents.size() - 1;
+ while (true) {
+ // current unsearched space is from lo to hi, inclusive.
+ if (lo > hi) {
+ // not found
+ return nullptr;
+ }
+ long int mid = lo + ((hi - lo) / 2);
+ Extent* mid_extent = &mExtents[mid];
+ uintptr_t mid_offset = mid_extent->offset();
+ uintptr_t mid_len = mid_extent->len();
+ uintptr_t mid_minAddr = mMapMinAVMA + mid_offset;
+ uintptr_t mid_maxAddr = mid_minAddr + mid_len - 1;
+ if (ia < mid_minAddr) {
+ hi = mid - 1;
+ continue;
+ }
+ if (ia > mid_maxAddr) {
+ lo = mid + 1;
+ continue;
+ }
+ MOZ_ASSERT(mid_minAddr <= ia && ia <= mid_maxAddr);
+ uint32_t mid_extent_dictIx = mid_extent->dictIx();
+ MOZ_RELEASE_ASSERT(mid_extent_dictIx < mExtents.size());
+ return &mDictionary[mid_extent_dictIx];
+ }
+ // NOTREACHED
+}
+
+// Add a RuleSet to the collection. The rule is copied in. Calling
+// this makes the map non-searchable.
+void SecMap::AddRuleSet(const RuleSet* rs, uintptr_t avma, uintptr_t len) {
+ mUsable = false;
+
+ // Zero length RuleSet? Meaningless, but ignore it anyway.
+ if (len == 0) {
+ return;
+ }
+
+ // Ignore attempts to add RuleSets whose address range doesn't fall within
+ // the declared address range for the SecMap. Maybe we should print some
+ // kind of error message rather than silently ignoring them.
+ if (!(avma >= mMapMinAVMA && avma + len - 1 <= mMapMaxAVMA)) {
+ return;
+ }
+
+ // Because `mMapStartAVMA` .. `mMapEndAVMA` can specify at most a 2^32-1 byte
+ // chunk of address space, the following must now hold.
+ MOZ_RELEASE_ASSERT(len <= (uintptr_t)0xFFFFFFFF);
+
+ // See if `mUniqifier` already has `rs`. If so set `dictIx` to the assigned
+ // dictionary index; if not, add `rs` to `mUniqifier` and assign a new
+ // dictionary index. This is the core of the RuleSet-de-duplication process.
+ uint32_t dictIx = 0;
+ mozilla::HashMap<RuleSet, uint32_t, RuleSet, InfallibleAllocPolicy>::AddPtr
+ p = mUniqifier->lookupForAdd(*rs);
+ if (!p) {
+ dictIx = mUniqifier->count();
+ // If this ever fails, Extents::dictIx will need to be changed to be a
+ // type wider than the current uint16_t.
+ MOZ_RELEASE_ASSERT(dictIx < (1 << 16));
+ // This returns `false` on OOM. We ignore the return value since we asked
+ // for it to use the InfallibleAllocPolicy.
+ DebugOnly<bool> addedOK = mUniqifier->add(p, *rs, dictIx);
+ MOZ_ASSERT(addedOK);
+ } else {
+ dictIx = p->value();
+ }
+
+ uint32_t offset = (uint32_t)(avma - mMapMinAVMA);
+ while (len > 0) {
+ // Because Extents::len is a uint16_t, we have to add multiple `mExtents`
+ // entries to cover the case where `len` is equal to or greater than 2^16.
+ // This happens only exceedingly rarely. In order to get more test
+ // coverage on what would otherwise be a very low probability (less than
+ // 0.0002%) corner case, we do this in steps of 4095. On libxul.so as of
+ // Sept 2020, this increases the number of `mExtents` entries by about
+ // 0.05%, hence has no meaningful effect on space use, but increases the
+ // use of this corner case, and hence its test coverage, by a factor of 250.
+ uint32_t this_step_len = (len > 4095) ? 4095 : len;
+ mExtents.emplace_back(offset, this_step_len, dictIx);
+ offset += this_step_len;
+ len -= this_step_len;
+ }
+}
+
+// Add a PfxInstr to the vector of such instrs, and return the index
+// in the vector. Calling this makes the map non-searchable.
+uint32_t SecMap::AddPfxInstr(PfxInstr pfxi) {
+ mUsable = false;
+ mPfxInstrs.push_back(pfxi);
+ return mPfxInstrs.size() - 1;
+}
+
+// Prepare the map for searching, by sorting it, de-overlapping entries and
+// removing any resulting zero-length entries. At the start of this routine,
+// all Extents should fall within [mMapMinAVMA, mMapMaxAVMA] and not have zero
+// length, as a result of the checks in AddRuleSet().
+void SecMap::PrepareRuleSets() {
+ // At this point, the de-duped RuleSets are in `mUniqifier`, and
+ // `mDictionary` is empty. This method will, amongst other things, copy
+ // them into `mDictionary` in order of their assigned dictionary-index
+ // values, as established by `SecMap::AddRuleSet`, and free `mUniqifier`;
+ // after this method, it has no further use.
+ MOZ_RELEASE_ASSERT(mUniqifier);
+ MOZ_RELEASE_ASSERT(mDictionary.empty());
+
+ if (mExtents.empty()) {
+ mUniqifier->clear();
+ mUniqifier = nullptr;
+ return;
+ }
+
+ if (mMapMinAVMA == 1 && mMapMaxAVMA == 0) {
+ // The map is empty. This should never happen.
+ mExtents.clear();
+ mUniqifier->clear();
+ mUniqifier = nullptr;
+ return;
+ }
+ MOZ_RELEASE_ASSERT(mMapMinAVMA <= mMapMaxAVMA);
+
+ // We must have at least one Extent, and as a consequence there must be at
+ // least one entry in the uniqifier.
+ MOZ_RELEASE_ASSERT(!mExtents.empty() && !mUniqifier->empty());
+
+#ifdef DEBUG
+ // Check invariants on incoming Extents.
+ for (size_t i = 0; i < mExtents.size(); ++i) {
+ Extent* ext = &mExtents[i];
+ uint32_t len = ext->len();
+ MOZ_ASSERT(len > 0);
+ MOZ_ASSERT(len <= 4095 /* per '4095' in AddRuleSet() */);
+ uint32_t offset = ext->offset();
+ uintptr_t avma = mMapMinAVMA + (uintptr_t)offset;
+ // Upper bounds test. There's no lower bounds test because `offset` is a
+ // positive displacement from `mMapMinAVMA`, so a small underrun will
+ // manifest as `len` being close to 2^32.
+ MOZ_ASSERT(avma + (uintptr_t)len - 1 <= mMapMaxAVMA);
+ }
+#endif
+
+ // Sort by start addresses.
+ std::sort(mExtents.begin(), mExtents.end(),
+ [](const Extent& ext1, const Extent& ext2) {
+ return ext1.offset() < ext2.offset();
+ });
+
+ // Iteratively truncate any overlaps and remove any zero length
+ // entries that might result, or that may have been present
+ // initially. Unless the input is seriously screwy, this is
+ // expected to iterate only once.
+ while (true) {
+ size_t i;
+ size_t n = mExtents.size();
+ size_t nZeroLen = 0;
+
+ if (n == 0) {
+ break;
+ }
+
+ for (i = 1; i < n; ++i) {
+ Extent* prev = &mExtents[i - 1];
+ Extent* here = &mExtents[i];
+ MOZ_ASSERT(prev->offset() <= here->offset());
+ if (prev->offset() + prev->len() > here->offset()) {
+ prev->setLen(here->offset() - prev->offset());
+ }
+ if (prev->len() == 0) {
+ nZeroLen++;
+ }
+ }
+
+ if (mExtents[n - 1].len() == 0) {
+ nZeroLen++;
+ }
+
+ // At this point, the entries are in-order and non-overlapping.
+ // If none of them are zero-length, we are done.
+ if (nZeroLen == 0) {
+ break;
+ }
+
+ // Slide back the entries to remove the zero length ones.
+ size_t j = 0; // The write-point.
+ for (i = 0; i < n; ++i) {
+ if (mExtents[i].len() == 0) {
+ continue;
+ }
+ if (j != i) {
+ mExtents[j] = mExtents[i];
+ }
+ ++j;
+ }
+ MOZ_ASSERT(i == n);
+ MOZ_ASSERT(nZeroLen <= n);
+ MOZ_ASSERT(j == n - nZeroLen);
+ while (nZeroLen > 0) {
+ mExtents.pop_back();
+ nZeroLen--;
+ }
+
+ MOZ_ASSERT(mExtents.size() == j);
+ }
+
+ size_t nExtents = mExtents.size();
+
+#ifdef DEBUG
+ // Do a final check on the extents: their address ranges must be
+ // ascending, non overlapping, non zero sized.
+ if (nExtents > 0) {
+ MOZ_ASSERT(mExtents[0].len() > 0);
+ for (size_t i = 1; i < nExtents; ++i) {
+ const Extent* prev = &mExtents[i - 1];
+ const Extent* here = &mExtents[i];
+ MOZ_ASSERT(prev->offset() < here->offset());
+ MOZ_ASSERT(here->len() > 0);
+ MOZ_ASSERT(prev->offset() + prev->len() <= here->offset());
+ }
+ }
+#endif
+
+ // Create the final dictionary by enumerating the uniqifier.
+ size_t nUniques = mUniqifier->count();
+
+ RuleSet dummy;
+ mozilla::PodZero(&dummy);
+
+ mDictionary.reserve(nUniques);
+ for (size_t i = 0; i < nUniques; i++) {
+ mDictionary.push_back(dummy);
+ }
+
+ for (auto iter = mUniqifier->iter(); !iter.done(); iter.next()) {
+ MOZ_RELEASE_ASSERT(iter.get().value() < nUniques);
+ mDictionary[iter.get().value()] = iter.get().key();
+ }
+
+ mUniqifier = nullptr;
+
+ char buf[150];
+ SprintfLiteral(
+ buf,
+ "PrepareRuleSets: %lu extents, %lu rulesets, "
+ "avma min/max 0x%llx, 0x%llx\n",
+ (unsigned long int)nExtents, (unsigned long int)mDictionary.size(),
+ (unsigned long long int)mMapMinAVMA, (unsigned long long int)mMapMaxAVMA);
+ buf[sizeof(buf) - 1] = 0;
+ mLog(buf);
+
+ // Is now usable for binary search.
+ mUsable = true;
+
+#if 0
+ mLog("\nRulesets after preening\n");
+ for (size_t i = 0; i < nExtents; ++i) {
+ const Extent* extent = &mExtents[i];
+ uintptr_t avma = mMapMinAVMA + (uintptr_t)extent->offset();
+ mDictionary[extent->dictIx()].Print(avma, extent->len(), mLog);
+ mLog("\n");
+ }
+ mLog("\n");
+#endif
+}
+
+bool SecMap::IsEmpty() { return mExtents.empty(); }
+
+size_t SecMap::SizeOfIncludingThis(MallocSizeOf aMallocSizeOf) const {
+ size_t n = aMallocSizeOf(this);
+
+ // It's conceivable that these calls would be unsafe with some
+ // implementations of std::vector, but it seems to be working for now...
+ n += aMallocSizeOf(mPfxInstrs.data());
+
+ if (mUniqifier) {
+ n += mUniqifier->shallowSizeOfIncludingThis(aMallocSizeOf);
+ }
+ n += aMallocSizeOf(mDictionary.data());
+ n += aMallocSizeOf(mExtents.data());
+
+ return n;
+}
+
+////////////////////////////////////////////////////////////////
+// SegArray //
+////////////////////////////////////////////////////////////////
+
+// A SegArray holds a set of address ranges that together exactly
+// cover an address range, with no overlaps or holes. Each range has
+// an associated value, which in this case has been specialised to be
+// a simple boolean. The representation is kept to minimal canonical
+// form in which adjacent ranges with the same associated value are
+// merged together. Each range is represented by a |struct Seg|.
+//
+// SegArrays are used to keep track of which parts of the address
+// space are known to contain instructions.
+class SegArray {
+ public:
+ void add(uintptr_t lo, uintptr_t hi, bool val) {
+ if (lo > hi) {
+ return;
+ }
+ split_at(lo);
+ if (hi < UINTPTR_MAX) {
+ split_at(hi + 1);
+ }
+ std::vector<Seg>::size_type iLo, iHi, i;
+ iLo = find(lo);
+ iHi = find(hi);
+ for (i = iLo; i <= iHi; ++i) {
+ mSegs[i].val = val;
+ }
+ preen();
+ }
+
+ // RUNS IN NO-MALLOC CONTEXT
+ bool getBoundingCodeSegment(/*OUT*/ uintptr_t* rx_min,
+ /*OUT*/ uintptr_t* rx_max, uintptr_t addr) {
+ std::vector<Seg>::size_type i = find(addr);
+ if (!mSegs[i].val) {
+ return false;
+ }
+ *rx_min = mSegs[i].lo;
+ *rx_max = mSegs[i].hi;
+ return true;
+ }
+
+ SegArray() {
+ Seg s(0, UINTPTR_MAX, false);
+ mSegs.push_back(s);
+ }
+
+ private:
+ struct Seg {
+ Seg(uintptr_t lo, uintptr_t hi, bool val) : lo(lo), hi(hi), val(val) {}
+ uintptr_t lo;
+ uintptr_t hi;
+ bool val;
+ };
+
+ void preen() {
+ for (std::vector<Seg>::iterator iter = mSegs.begin();
+ iter < mSegs.end() - 1; ++iter) {
+ if (iter[0].val != iter[1].val) {
+ continue;
+ }
+ iter[0].hi = iter[1].hi;
+ mSegs.erase(iter + 1);
+ // Back up one, so as not to miss an opportunity to merge
+ // with the entry after this one.
+ --iter;
+ }
+ }
+
+ // RUNS IN NO-MALLOC CONTEXT
+ std::vector<Seg>::size_type find(uintptr_t a) {
+ long int lo = 0;
+ long int hi = (long int)mSegs.size();
+ while (true) {
+ // The unsearched space is lo .. hi inclusive.
+ if (lo > hi) {
+ // Not found. This can't happen.
+ return (std::vector<Seg>::size_type)(-1);
+ }
+ long int mid = lo + ((hi - lo) / 2);
+ uintptr_t mid_lo = mSegs[mid].lo;
+ uintptr_t mid_hi = mSegs[mid].hi;
+ if (a < mid_lo) {
+ hi = mid - 1;
+ continue;
+ }
+ if (a > mid_hi) {
+ lo = mid + 1;
+ continue;
+ }
+ return (std::vector<Seg>::size_type)mid;
+ }
+ }
+
+ void split_at(uintptr_t a) {
+ std::vector<Seg>::size_type i = find(a);
+ if (mSegs[i].lo == a) {
+ return;
+ }
+ mSegs.insert(mSegs.begin() + i + 1, mSegs[i]);
+ mSegs[i].hi = a - 1;
+ mSegs[i + 1].lo = a;
+ }
+
+ void show() {
+ printf("<< %d entries:\n", (int)mSegs.size());
+ for (std::vector<Seg>::iterator iter = mSegs.begin(); iter < mSegs.end();
+ ++iter) {
+ printf(" %016llx %016llx %s\n", (unsigned long long int)(*iter).lo,
+ (unsigned long long int)(*iter).hi,
+ (*iter).val ? "true" : "false");
+ }
+ printf(">>\n");
+ }
+
+ std::vector<Seg> mSegs;
+};
+
+////////////////////////////////////////////////////////////////
+// PriMap //
+////////////////////////////////////////////////////////////////
+
+class PriMap {
+ public:
+ explicit PriMap(void (*aLog)(const char*)) : mLog(aLog) {}
+
+ // RUNS IN NO-MALLOC CONTEXT
+ pair<const RuleSet*, const vector<PfxInstr>*> Lookup(uintptr_t ia) {
+ SecMap* sm = FindSecMap(ia);
+ return pair<const RuleSet*, const vector<PfxInstr>*>(
+ sm ? sm->FindRuleSet(ia) : nullptr, sm ? sm->GetPfxInstrs() : nullptr);
+ }
+
+ // Add a secondary map. No overlaps allowed w.r.t. existing
+ // secondary maps.
+ void AddSecMap(mozilla::UniquePtr<SecMap>&& aSecMap) {
+ // We can't add an empty SecMap to the PriMap. But that's OK
+ // since we'd never be able to find anything in it anyway.
+ if (aSecMap->IsEmpty()) {
+ return;
+ }
+
+ // Iterate through the SecMaps and find the right place for this
+ // one. At the same time, ensure that the in-order
+ // non-overlapping invariant is preserved (and, generally, holds).
+ // FIXME: this gives a cost that is O(N^2) in the total number of
+ // shared objects in the system. ToDo: better.
+ MOZ_ASSERT(aSecMap->mMapMinAVMA <= aSecMap->mMapMaxAVMA);
+
+ size_t num_secMaps = mSecMaps.size();
+ uintptr_t i;
+ for (i = 0; i < num_secMaps; ++i) {
+ mozilla::UniquePtr<SecMap>& sm_i = mSecMaps[i];
+ MOZ_ASSERT(sm_i->mMapMinAVMA <= sm_i->mMapMaxAVMA);
+ if (aSecMap->mMapMinAVMA < sm_i->mMapMaxAVMA) {
+ // |aSecMap| needs to be inserted immediately before mSecMaps[i].
+ break;
+ }
+ }
+ MOZ_ASSERT(i <= num_secMaps);
+ if (i == num_secMaps) {
+ // It goes at the end.
+ mSecMaps.push_back(std::move(aSecMap));
+ } else {
+ std::vector<mozilla::UniquePtr<SecMap>>::iterator iter =
+ mSecMaps.begin() + i;
+ mSecMaps.insert(iter, std::move(aSecMap));
+ }
+ char buf[100];
+ SprintfLiteral(buf, "AddSecMap: now have %d SecMaps\n",
+ (int)mSecMaps.size());
+ buf[sizeof(buf) - 1] = 0;
+ mLog(buf);
+ }
+
+ // Remove and delete any SecMaps in the mapping, that intersect
+ // with the specified address range.
+ void RemoveSecMapsInRange(uintptr_t avma_min, uintptr_t avma_max) {
+ MOZ_ASSERT(avma_min <= avma_max);
+ size_t num_secMaps = mSecMaps.size();
+ if (num_secMaps > 0) {
+ intptr_t i;
+ // Iterate from end to start over the vector, so as to ensure
+ // that the special case where |avma_min| and |avma_max| denote
+ // the entire address space, can be completed in time proportional
+ // to the number of elements in the map.
+ for (i = (intptr_t)num_secMaps - 1; i >= 0; i--) {
+ mozilla::UniquePtr<SecMap>& sm_i = mSecMaps[i];
+ if (sm_i->mMapMaxAVMA < avma_min || avma_max < sm_i->mMapMinAVMA) {
+ // There's no overlap. Move on.
+ continue;
+ }
+ // We need to remove mSecMaps[i] and slide all those above it
+ // downwards to cover the hole.
+ mSecMaps.erase(mSecMaps.begin() + i);
+ }
+ }
+ }
+
+ // Return the number of currently contained SecMaps.
+ size_t CountSecMaps() { return mSecMaps.size(); }
+
+ size_t SizeOfIncludingThis(MallocSizeOf aMallocSizeOf) const {
+ size_t n = aMallocSizeOf(this);
+
+ // It's conceivable that this call would be unsafe with some
+ // implementations of std::vector, but it seems to be working for now...
+ n += aMallocSizeOf(mSecMaps.data());
+
+ for (size_t i = 0; i < mSecMaps.size(); i++) {
+ n += mSecMaps[i]->SizeOfIncludingThis(aMallocSizeOf);
+ }
+
+ return n;
+ }
+
+ private:
+ // RUNS IN NO-MALLOC CONTEXT
+ SecMap* FindSecMap(uintptr_t ia) {
+ // Binary search mSecMaps to find one that brackets |ia|.
+ // lo and hi need to be signed, else the loop termination tests
+ // don't work properly.
+ long int lo = 0;
+ long int hi = (long int)mSecMaps.size() - 1;
+ while (true) {
+ // current unsearched space is from lo to hi, inclusive.
+ if (lo > hi) {
+ // not found
+ return nullptr;
+ }
+ long int mid = lo + ((hi - lo) / 2);
+ mozilla::UniquePtr<SecMap>& mid_secMap = mSecMaps[mid];
+ uintptr_t mid_minAddr = mid_secMap->mMapMinAVMA;
+ uintptr_t mid_maxAddr = mid_secMap->mMapMaxAVMA;
+ if (ia < mid_minAddr) {
+ hi = mid - 1;
+ continue;
+ }
+ if (ia > mid_maxAddr) {
+ lo = mid + 1;
+ continue;
+ }
+ MOZ_ASSERT(mid_minAddr <= ia && ia <= mid_maxAddr);
+ return mid_secMap.get();
+ }
+ // NOTREACHED
+ }
+
+ private:
+ // sorted array of per-object ranges, non overlapping, non empty
+ std::vector<mozilla::UniquePtr<SecMap>> mSecMaps;
+
+ // a logging sink, for debugging.
+ void (*mLog)(const char*);
+};
+
+////////////////////////////////////////////////////////////////
+// LUL //
+////////////////////////////////////////////////////////////////
+
+#define LUL_LOG(_str) \
+ do { \
+ char buf[200]; \
+ SprintfLiteral(buf, "LUL: pid %" PRIu64 " tid %" PRIu64 " lul-obj %p: %s", \
+ uint64_t(profiler_current_process_id().ToNumber()), \
+ uint64_t(profiler_current_thread_id().ToNumber()), this, \
+ (_str)); \
+ buf[sizeof(buf) - 1] = 0; \
+ mLog(buf); \
+ } while (0)
+
+LUL::LUL(void (*aLog)(const char*))
+ : mLog(aLog),
+ mAdminMode(true),
+ mAdminThreadId(profiler_current_thread_id()),
+ mPriMap(new PriMap(aLog)),
+ mSegArray(new SegArray()),
+ mUSU(new UniqueStringUniverse()) {
+ LUL_LOG("LUL::LUL: Created object");
+}
+
+LUL::~LUL() {
+ LUL_LOG("LUL::~LUL: Destroyed object");
+ delete mPriMap;
+ delete mSegArray;
+ mLog = nullptr;
+ delete mUSU;
+}
+
+void LUL::MaybeShowStats() {
+ // This is racey in the sense that it can't guarantee that
+ // n_new == n_new_Context + n_new_CFI + n_new_Scanned
+ // if it should happen that mStats is updated by some other thread
+ // in between computation of n_new and n_new_{Context,CFI,FP}.
+ // But it's just stats printing, so we don't really care.
+ uint32_t n_new = mStats - mStatsPrevious;
+ if (n_new >= 5000) {
+ uint32_t n_new_Context = mStats.mContext - mStatsPrevious.mContext;
+ uint32_t n_new_CFI = mStats.mCFI - mStatsPrevious.mCFI;
+ uint32_t n_new_FP = mStats.mFP - mStatsPrevious.mFP;
+ mStatsPrevious = mStats;
+ char buf[200];
+ SprintfLiteral(buf,
+ "LUL frame stats: TOTAL %5u"
+ " CTX %4u CFI %4u FP %4u",
+ n_new, n_new_Context, n_new_CFI, n_new_FP);
+ buf[sizeof(buf) - 1] = 0;
+ mLog(buf);
+ }
+}
+
+size_t LUL::SizeOfIncludingThis(MallocSizeOf aMallocSizeOf) const {
+ size_t n = aMallocSizeOf(this);
+ n += mPriMap->SizeOfIncludingThis(aMallocSizeOf);
+
+ // Measurement of the following members may be added later if DMD finds it
+ // is worthwhile:
+ // - mSegArray
+ // - mUSU
+
+ return n;
+}
+
+void LUL::EnableUnwinding() {
+ LUL_LOG("LUL::EnableUnwinding");
+ // Don't assert for Admin mode here. That is, tolerate a call here
+ // if we are already in Unwinding mode.
+ MOZ_RELEASE_ASSERT(profiler_current_thread_id() == mAdminThreadId);
+
+ mAdminMode = false;
+}
+
+void LUL::NotifyAfterMap(uintptr_t aRXavma, size_t aSize, const char* aFileName,
+ const void* aMappedImage) {
+ MOZ_RELEASE_ASSERT(mAdminMode);
+ MOZ_RELEASE_ASSERT(profiler_current_thread_id() == mAdminThreadId);
+
+ mLog(":\n");
+ char buf[200];
+ SprintfLiteral(buf, "NotifyMap %llx %llu %s\n",
+ (unsigned long long int)aRXavma, (unsigned long long int)aSize,
+ aFileName);
+ buf[sizeof(buf) - 1] = 0;
+ mLog(buf);
+
+ // We can't have a SecMap covering more than 2^32-1 bytes of address space.
+ // See the definition of SecMap for why. Rather than crash the system, just
+ // limit the SecMap's size accordingly. This case is never actually
+ // expected to happen.
+ if (((unsigned long long int)aSize) > 0xFFFFFFFFULL) {
+ aSize = (uintptr_t)0xFFFFFFFF;
+ }
+ MOZ_RELEASE_ASSERT(aSize <= 0xFFFFFFFF);
+
+ // Ignore obviously-stupid notifications.
+ if (aSize > 0) {
+ // Here's a new mapping, for this object.
+ mozilla::UniquePtr<SecMap> smap =
+ mozilla::MakeUnique<SecMap>(aRXavma, (uint32_t)aSize, mLog);
+
+ // Read CFI or EXIDX unwind data into |smap|.
+ if (!aMappedImage) {
+ (void)lul::ReadSymbolData(string(aFileName), std::vector<string>(),
+ smap.get(), (void*)aRXavma, aSize, mUSU, mLog);
+ } else {
+ (void)lul::ReadSymbolDataInternal(
+ (const uint8_t*)aMappedImage, string(aFileName),
+ std::vector<string>(), smap.get(), (void*)aRXavma, aSize, mUSU, mLog);
+ }
+
+ mLog("NotifyMap .. preparing entries\n");
+
+ smap->PrepareRuleSets();
+
+ SprintfLiteral(buf, "NotifyMap got %lld entries\n",
+ (long long int)smap->Size());
+ buf[sizeof(buf) - 1] = 0;
+ mLog(buf);
+
+ // Add it to the primary map (the top level set of mapped objects).
+ mPriMap->AddSecMap(std::move(smap));
+
+ // Tell the segment array about the mapping, so that the stack
+ // scan and __kernel_syscall mechanisms know where valid code is.
+ mSegArray->add(aRXavma, aRXavma + aSize - 1, true);
+ }
+}
+
+void LUL::NotifyExecutableArea(uintptr_t aRXavma, size_t aSize) {
+ MOZ_RELEASE_ASSERT(mAdminMode);
+ MOZ_RELEASE_ASSERT(profiler_current_thread_id() == mAdminThreadId);
+
+ mLog(":\n");
+ char buf[200];
+ SprintfLiteral(buf, "NotifyExecutableArea %llx %llu\n",
+ (unsigned long long int)aRXavma,
+ (unsigned long long int)aSize);
+ buf[sizeof(buf) - 1] = 0;
+ mLog(buf);
+
+ // Ignore obviously-stupid notifications.
+ if (aSize > 0) {
+ // Tell the segment array about the mapping, so that the stack
+ // scan and __kernel_syscall mechanisms know where valid code is.
+ mSegArray->add(aRXavma, aRXavma + aSize - 1, true);
+ }
+}
+
+void LUL::NotifyBeforeUnmap(uintptr_t aRXavmaMin, uintptr_t aRXavmaMax) {
+ MOZ_RELEASE_ASSERT(mAdminMode);
+ MOZ_RELEASE_ASSERT(profiler_current_thread_id() == mAdminThreadId);
+
+ mLog(":\n");
+ char buf[100];
+ SprintfLiteral(buf, "NotifyUnmap %016llx-%016llx\n",
+ (unsigned long long int)aRXavmaMin,
+ (unsigned long long int)aRXavmaMax);
+ buf[sizeof(buf) - 1] = 0;
+ mLog(buf);
+
+ MOZ_ASSERT(aRXavmaMin <= aRXavmaMax);
+
+ // Remove from the primary map, any secondary maps that intersect
+ // with the address range. Also delete the secondary maps.
+ mPriMap->RemoveSecMapsInRange(aRXavmaMin, aRXavmaMax);
+
+ // Tell the segment array that the address range no longer
+ // contains valid code.
+ mSegArray->add(aRXavmaMin, aRXavmaMax, false);
+
+ SprintfLiteral(buf, "NotifyUnmap: now have %d SecMaps\n",
+ (int)mPriMap->CountSecMaps());
+ buf[sizeof(buf) - 1] = 0;
+ mLog(buf);
+}
+
+size_t LUL::CountMappings() {
+ MOZ_RELEASE_ASSERT(mAdminMode);
+ MOZ_RELEASE_ASSERT(profiler_current_thread_id() == mAdminThreadId);
+
+ return mPriMap->CountSecMaps();
+}
+
+// RUNS IN NO-MALLOC CONTEXT
+static TaggedUWord DerefTUW(TaggedUWord aAddr, const StackImage* aStackImg) {
+ if (!aAddr.Valid()) {
+ return TaggedUWord();
+ }
+
+ // Lower limit check. |aAddr.Value()| is the lowest requested address
+ // and |aStackImg->mStartAvma| is the lowest address we actually have,
+ // so the comparison is straightforward.
+ if (aAddr.Value() < aStackImg->mStartAvma) {
+ return TaggedUWord();
+ }
+
+ // Upper limit check. We must compute the highest requested address
+ // and the highest address we actually have, but being careful to
+ // avoid overflow. In particular if |aAddr| is 0xFFF...FFF or the
+ // 3/7 values below that, then we will get overflow. See bug #1245477.
+ typedef CheckedInt<uintptr_t> CheckedUWord;
+ CheckedUWord highest_requested_plus_one =
+ CheckedUWord(aAddr.Value()) + CheckedUWord(sizeof(uintptr_t));
+ CheckedUWord highest_available_plus_one =
+ CheckedUWord(aStackImg->mStartAvma) + CheckedUWord(aStackImg->mLen);
+ if (!highest_requested_plus_one.isValid() // overflow?
+ || !highest_available_plus_one.isValid() // overflow?
+ || (highest_requested_plus_one.value() >
+ highest_available_plus_one.value())) { // in range?
+ return TaggedUWord();
+ }
+
+ return TaggedUWord(
+ *(uintptr_t*)(&aStackImg
+ ->mContents[aAddr.Value() - aStackImg->mStartAvma]));
+}
+
+// RUNS IN NO-MALLOC CONTEXT
+static TaggedUWord EvaluateReg(int16_t aReg, const UnwindRegs* aOldRegs,
+ TaggedUWord aCFA) {
+ switch (aReg) {
+ case DW_REG_CFA:
+ return aCFA;
+#if defined(GP_ARCH_amd64) || defined(GP_ARCH_x86)
+ case DW_REG_INTEL_XBP:
+ return aOldRegs->xbp;
+ case DW_REG_INTEL_XSP:
+ return aOldRegs->xsp;
+ case DW_REG_INTEL_XIP:
+ return aOldRegs->xip;
+#elif defined(GP_ARCH_arm)
+ case DW_REG_ARM_R7:
+ return aOldRegs->r7;
+ case DW_REG_ARM_R11:
+ return aOldRegs->r11;
+ case DW_REG_ARM_R12:
+ return aOldRegs->r12;
+ case DW_REG_ARM_R13:
+ return aOldRegs->r13;
+ case DW_REG_ARM_R14:
+ return aOldRegs->r14;
+ case DW_REG_ARM_R15:
+ return aOldRegs->r15;
+#elif defined(GP_ARCH_arm64)
+ case DW_REG_AARCH64_X29:
+ return aOldRegs->x29;
+ case DW_REG_AARCH64_X30:
+ return aOldRegs->x30;
+ case DW_REG_AARCH64_SP:
+ return aOldRegs->sp;
+#elif defined(GP_ARCH_mips64)
+ case DW_REG_MIPS_SP:
+ return aOldRegs->sp;
+ case DW_REG_MIPS_FP:
+ return aOldRegs->fp;
+ case DW_REG_MIPS_PC:
+ return aOldRegs->pc;
+#else
+# error "Unsupported arch"
+#endif
+ default:
+ MOZ_ASSERT(0);
+ return TaggedUWord();
+ }
+}
+
+// RUNS IN NO-MALLOC CONTEXT
+// See prototype for comment.
+TaggedUWord EvaluatePfxExpr(int32_t start, const UnwindRegs* aOldRegs,
+ TaggedUWord aCFA, const StackImage* aStackImg,
+ const vector<PfxInstr>& aPfxInstrs) {
+ // A small evaluation stack, and a stack pointer, which points to
+ // the highest numbered in-use element.
+ const int N_STACK = 10;
+ TaggedUWord stack[N_STACK];
+ int stackPointer = -1;
+ for (int i = 0; i < N_STACK; i++) stack[i] = TaggedUWord();
+
+#define PUSH(_tuw) \
+ do { \
+ if (stackPointer >= N_STACK - 1) goto fail; /* overflow */ \
+ stack[++stackPointer] = (_tuw); \
+ } while (0)
+
+#define POP(_lval) \
+ do { \
+ if (stackPointer < 0) goto fail; /* underflow */ \
+ _lval = stack[stackPointer--]; \
+ } while (0)
+
+ // Cursor in the instruction sequence.
+ size_t curr = start + 1;
+
+ // Check the start point is sane.
+ size_t nInstrs = aPfxInstrs.size();
+ if (start < 0 || (size_t)start >= nInstrs) goto fail;
+
+ {
+ // The instruction sequence must start with PX_Start. If not,
+ // something is seriously wrong.
+ PfxInstr first = aPfxInstrs[start];
+ if (first.mOpcode != PX_Start) goto fail;
+
+ // Push the CFA on the stack to start with (or not), as required by
+ // the original DW_OP_*expression* CFI.
+ if (first.mOperand != 0) PUSH(aCFA);
+ }
+
+ while (true) {
+ if (curr >= nInstrs) goto fail; // ran off the end of the sequence
+
+ PfxInstr pfxi = aPfxInstrs[curr++];
+ if (pfxi.mOpcode == PX_End) break; // we're done
+
+ switch (pfxi.mOpcode) {
+ case PX_Start:
+ // This should appear only at the start of the sequence.
+ goto fail;
+ case PX_End:
+ // We just took care of that, so we shouldn't see it again.
+ MOZ_ASSERT(0);
+ goto fail;
+ case PX_SImm32:
+ PUSH(TaggedUWord((intptr_t)pfxi.mOperand));
+ break;
+ case PX_DwReg: {
+ DW_REG_NUMBER reg = (DW_REG_NUMBER)pfxi.mOperand;
+ MOZ_ASSERT(reg != DW_REG_CFA);
+ PUSH(EvaluateReg(reg, aOldRegs, aCFA));
+ break;
+ }
+ case PX_Deref: {
+ TaggedUWord addr;
+ POP(addr);
+ PUSH(DerefTUW(addr, aStackImg));
+ break;
+ }
+ case PX_Add: {
+ TaggedUWord x, y;
+ POP(x);
+ POP(y);
+ PUSH(y + x);
+ break;
+ }
+ case PX_Sub: {
+ TaggedUWord x, y;
+ POP(x);
+ POP(y);
+ PUSH(y - x);
+ break;
+ }
+ case PX_And: {
+ TaggedUWord x, y;
+ POP(x);
+ POP(y);
+ PUSH(y & x);
+ break;
+ }
+ case PX_Or: {
+ TaggedUWord x, y;
+ POP(x);
+ POP(y);
+ PUSH(y | x);
+ break;
+ }
+ case PX_CmpGES: {
+ TaggedUWord x, y;
+ POP(x);
+ POP(y);
+ PUSH(y.CmpGEs(x));
+ break;
+ }
+ case PX_Shl: {
+ TaggedUWord x, y;
+ POP(x);
+ POP(y);
+ PUSH(y << x);
+ break;
+ }
+ default:
+ MOZ_ASSERT(0);
+ goto fail;
+ }
+ } // while (true)
+
+ // Evaluation finished. The top value on the stack is the result.
+ if (stackPointer >= 0) {
+ return stack[stackPointer];
+ }
+ // Else fall through
+
+fail:
+ return TaggedUWord();
+
+#undef PUSH
+#undef POP
+}
+
+// RUNS IN NO-MALLOC CONTEXT
+TaggedUWord LExpr::EvaluateExpr(const UnwindRegs* aOldRegs, TaggedUWord aCFA,
+ const StackImage* aStackImg,
+ const vector<PfxInstr>* aPfxInstrs) const {
+ switch (mHow) {
+ case UNKNOWN:
+ return TaggedUWord();
+ case NODEREF: {
+ TaggedUWord tuw = EvaluateReg(mReg, aOldRegs, aCFA);
+ tuw = tuw + TaggedUWord((intptr_t)mOffset);
+ return tuw;
+ }
+ case DEREF: {
+ TaggedUWord tuw = EvaluateReg(mReg, aOldRegs, aCFA);
+ tuw = tuw + TaggedUWord((intptr_t)mOffset);
+ return DerefTUW(tuw, aStackImg);
+ }
+ case PFXEXPR: {
+ MOZ_ASSERT(aPfxInstrs);
+ if (!aPfxInstrs) {
+ return TaggedUWord();
+ }
+ return EvaluatePfxExpr(mOffset, aOldRegs, aCFA, aStackImg, *aPfxInstrs);
+ }
+ default:
+ MOZ_ASSERT(0);
+ return TaggedUWord();
+ }
+}
+
+// RUNS IN NO-MALLOC CONTEXT
+static void UseRuleSet(/*MOD*/ UnwindRegs* aRegs, const StackImage* aStackImg,
+ const RuleSet* aRS, const vector<PfxInstr>* aPfxInstrs) {
+ // Take a copy of regs, since we'll need to refer to the old values
+ // whilst computing the new ones.
+ UnwindRegs old_regs = *aRegs;
+
+ // Mark all the current register values as invalid, so that the
+ // caller can see, on our return, which ones have been computed
+ // anew. If we don't even manage to compute a new PC value, then
+ // the caller will have to abandon the unwind.
+ // FIXME: Create and use instead: aRegs->SetAllInvalid();
+#if defined(GP_ARCH_amd64) || defined(GP_ARCH_x86)
+ aRegs->xbp = TaggedUWord();
+ aRegs->xsp = TaggedUWord();
+ aRegs->xip = TaggedUWord();
+#elif defined(GP_ARCH_arm)
+ aRegs->r7 = TaggedUWord();
+ aRegs->r11 = TaggedUWord();
+ aRegs->r12 = TaggedUWord();
+ aRegs->r13 = TaggedUWord();
+ aRegs->r14 = TaggedUWord();
+ aRegs->r15 = TaggedUWord();
+#elif defined(GP_ARCH_arm64)
+ aRegs->x29 = TaggedUWord();
+ aRegs->x30 = TaggedUWord();
+ aRegs->sp = TaggedUWord();
+ aRegs->pc = TaggedUWord();
+#elif defined(GP_ARCH_mips64)
+ aRegs->sp = TaggedUWord();
+ aRegs->fp = TaggedUWord();
+ aRegs->pc = TaggedUWord();
+#else
+# error "Unsupported arch"
+#endif
+
+ // This is generally useful.
+ const TaggedUWord inval = TaggedUWord();
+
+ // First, compute the CFA.
+ TaggedUWord cfa = aRS->mCfaExpr.EvaluateExpr(&old_regs, inval /*old cfa*/,
+ aStackImg, aPfxInstrs);
+
+ // If we didn't manage to compute the CFA, well .. that's ungood,
+ // but keep going anyway. It'll be OK provided none of the register
+ // value rules mention the CFA. In any case, compute the new values
+ // for each register that we're tracking.
+
+#if defined(GP_ARCH_amd64) || defined(GP_ARCH_x86)
+ aRegs->xbp =
+ aRS->mXbpExpr.EvaluateExpr(&old_regs, cfa, aStackImg, aPfxInstrs);
+ aRegs->xsp =
+ aRS->mXspExpr.EvaluateExpr(&old_regs, cfa, aStackImg, aPfxInstrs);
+ aRegs->xip =
+ aRS->mXipExpr.EvaluateExpr(&old_regs, cfa, aStackImg, aPfxInstrs);
+#elif defined(GP_ARCH_arm)
+ aRegs->r7 = aRS->mR7expr.EvaluateExpr(&old_regs, cfa, aStackImg, aPfxInstrs);
+ aRegs->r11 =
+ aRS->mR11expr.EvaluateExpr(&old_regs, cfa, aStackImg, aPfxInstrs);
+ aRegs->r12 =
+ aRS->mR12expr.EvaluateExpr(&old_regs, cfa, aStackImg, aPfxInstrs);
+ aRegs->r13 =
+ aRS->mR13expr.EvaluateExpr(&old_regs, cfa, aStackImg, aPfxInstrs);
+ aRegs->r14 =
+ aRS->mR14expr.EvaluateExpr(&old_regs, cfa, aStackImg, aPfxInstrs);
+ aRegs->r15 =
+ aRS->mR15expr.EvaluateExpr(&old_regs, cfa, aStackImg, aPfxInstrs);
+#elif defined(GP_ARCH_arm64)
+ aRegs->x29 =
+ aRS->mX29expr.EvaluateExpr(&old_regs, cfa, aStackImg, aPfxInstrs);
+ aRegs->x30 =
+ aRS->mX30expr.EvaluateExpr(&old_regs, cfa, aStackImg, aPfxInstrs);
+ aRegs->sp = aRS->mSPexpr.EvaluateExpr(&old_regs, cfa, aStackImg, aPfxInstrs);
+#elif defined(GP_ARCH_mips64)
+ aRegs->sp = aRS->mSPexpr.EvaluateExpr(&old_regs, cfa, aStackImg, aPfxInstrs);
+ aRegs->fp = aRS->mFPexpr.EvaluateExpr(&old_regs, cfa, aStackImg, aPfxInstrs);
+ aRegs->pc = aRS->mPCexpr.EvaluateExpr(&old_regs, cfa, aStackImg, aPfxInstrs);
+#else
+# error "Unsupported arch"
+#endif
+
+ // We're done. Any regs for which we didn't manage to compute a
+ // new value will now be marked as invalid.
+}
+
+// RUNS IN NO-MALLOC CONTEXT
+void LUL::Unwind(/*OUT*/ uintptr_t* aFramePCs,
+ /*OUT*/ uintptr_t* aFrameSPs,
+ /*OUT*/ size_t* aFramesUsed,
+ /*OUT*/ size_t* aFramePointerFramesAcquired,
+ size_t aFramesAvail, UnwindRegs* aStartRegs,
+ StackImage* aStackImg) {
+ MOZ_RELEASE_ASSERT(!mAdminMode);
+
+ /////////////////////////////////////////////////////////
+ // BEGIN UNWIND
+
+ *aFramesUsed = 0;
+
+ UnwindRegs regs = *aStartRegs;
+ TaggedUWord last_valid_sp = TaggedUWord();
+
+ while (true) {
+ if (DEBUG_MAIN) {
+ char buf[300];
+ mLog("\n");
+#if defined(GP_ARCH_amd64) || defined(GP_ARCH_x86)
+ SprintfLiteral(
+ buf, "LoopTop: rip %d/%llx rsp %d/%llx rbp %d/%llx\n",
+ (int)regs.xip.Valid(), (unsigned long long int)regs.xip.Value(),
+ (int)regs.xsp.Valid(), (unsigned long long int)regs.xsp.Value(),
+ (int)regs.xbp.Valid(), (unsigned long long int)regs.xbp.Value());
+ buf[sizeof(buf) - 1] = 0;
+ mLog(buf);
+#elif defined(GP_ARCH_arm)
+ SprintfLiteral(
+ buf,
+ "LoopTop: r15 %d/%llx r7 %d/%llx r11 %d/%llx"
+ " r12 %d/%llx r13 %d/%llx r14 %d/%llx\n",
+ (int)regs.r15.Valid(), (unsigned long long int)regs.r15.Value(),
+ (int)regs.r7.Valid(), (unsigned long long int)regs.r7.Value(),
+ (int)regs.r11.Valid(), (unsigned long long int)regs.r11.Value(),
+ (int)regs.r12.Valid(), (unsigned long long int)regs.r12.Value(),
+ (int)regs.r13.Valid(), (unsigned long long int)regs.r13.Value(),
+ (int)regs.r14.Valid(), (unsigned long long int)regs.r14.Value());
+ buf[sizeof(buf) - 1] = 0;
+ mLog(buf);
+#elif defined(GP_ARCH_arm64)
+ SprintfLiteral(
+ buf,
+ "LoopTop: pc %d/%llx x29 %d/%llx x30 %d/%llx"
+ " sp %d/%llx\n",
+ (int)regs.pc.Valid(), (unsigned long long int)regs.pc.Value(),
+ (int)regs.x29.Valid(), (unsigned long long int)regs.x29.Value(),
+ (int)regs.x30.Valid(), (unsigned long long int)regs.x30.Value(),
+ (int)regs.sp.Valid(), (unsigned long long int)regs.sp.Value());
+ buf[sizeof(buf) - 1] = 0;
+ mLog(buf);
+#elif defined(GP_ARCH_mips64)
+ SprintfLiteral(
+ buf, "LoopTop: pc %d/%llx sp %d/%llx fp %d/%llx\n",
+ (int)regs.pc.Valid(), (unsigned long long int)regs.pc.Value(),
+ (int)regs.sp.Valid(), (unsigned long long int)regs.sp.Value(),
+ (int)regs.fp.Valid(), (unsigned long long int)regs.fp.Value());
+ buf[sizeof(buf) - 1] = 0;
+ mLog(buf);
+#else
+# error "Unsupported arch"
+#endif
+ }
+
+#if defined(GP_ARCH_amd64) || defined(GP_ARCH_x86)
+ TaggedUWord ia = regs.xip;
+ TaggedUWord sp = regs.xsp;
+#elif defined(GP_ARCH_arm)
+ TaggedUWord ia = (*aFramesUsed == 0 ? regs.r15 : regs.r14);
+ TaggedUWord sp = regs.r13;
+#elif defined(GP_ARCH_arm64)
+ TaggedUWord ia = (*aFramesUsed == 0 ? regs.pc : regs.x30);
+ TaggedUWord sp = regs.sp;
+#elif defined(GP_ARCH_mips64)
+ TaggedUWord ia = regs.pc;
+ TaggedUWord sp = regs.sp;
+#else
+# error "Unsupported arch"
+#endif
+
+ if (*aFramesUsed >= aFramesAvail) {
+ break;
+ }
+
+ // If we don't have a valid value for the PC, give up.
+ if (!ia.Valid()) {
+ break;
+ }
+
+ // If this is the innermost frame, record the SP value, which
+ // presumably is valid. If this isn't the innermost frame, and we
+ // have a valid SP value, check that its SP value isn't less that
+ // the one we've seen so far, so as to catch potential SP value
+ // cycles.
+ if (*aFramesUsed == 0) {
+ last_valid_sp = sp;
+ } else {
+ MOZ_ASSERT(last_valid_sp.Valid());
+ if (sp.Valid()) {
+ if (sp.Value() < last_valid_sp.Value()) {
+ // Hmm, SP going in the wrong direction. Let's stop.
+ break;
+ }
+ // Remember where we got to.
+ last_valid_sp = sp;
+ }
+ }
+
+ aFramePCs[*aFramesUsed] = ia.Value();
+ aFrameSPs[*aFramesUsed] = sp.Valid() ? sp.Value() : 0;
+ (*aFramesUsed)++;
+
+ // Find the RuleSet for the current IA, if any. This will also
+ // query the backing (secondary) maps if it isn't found in the
+ // thread-local cache.
+
+ // If this isn't the innermost frame, back up into the calling insn.
+ if (*aFramesUsed > 1) {
+ ia = ia + TaggedUWord((uintptr_t)(-1));
+ }
+
+ pair<const RuleSet*, const vector<PfxInstr>*> ruleset_and_pfxinstrs =
+ mPriMap->Lookup(ia.Value());
+ const RuleSet* ruleset = ruleset_and_pfxinstrs.first;
+ const vector<PfxInstr>* pfxinstrs = ruleset_and_pfxinstrs.second;
+
+ if (DEBUG_MAIN) {
+ char buf[100];
+ SprintfLiteral(buf, "ruleset for 0x%llx = %p\n",
+ (unsigned long long int)ia.Value(), ruleset);
+ buf[sizeof(buf) - 1] = 0;
+ mLog(buf);
+ }
+
+#if defined(GP_PLAT_x86_android) || defined(GP_PLAT_x86_linux)
+ /////////////////////////////////////////////
+ ////
+ // On 32 bit x86-linux, syscalls are often done via the VDSO
+ // function __kernel_vsyscall, which doesn't have a corresponding
+ // object that we can read debuginfo from. That effectively kills
+ // off all stack traces for threads blocked in syscalls. Hence
+ // special-case by looking at the code surrounding the program
+ // counter.
+ //
+ // 0xf7757420 <__kernel_vsyscall+0>: push %ecx
+ // 0xf7757421 <__kernel_vsyscall+1>: push %edx
+ // 0xf7757422 <__kernel_vsyscall+2>: push %ebp
+ // 0xf7757423 <__kernel_vsyscall+3>: mov %esp,%ebp
+ // 0xf7757425 <__kernel_vsyscall+5>: sysenter
+ // 0xf7757427 <__kernel_vsyscall+7>: nop
+ // 0xf7757428 <__kernel_vsyscall+8>: nop
+ // 0xf7757429 <__kernel_vsyscall+9>: nop
+ // 0xf775742a <__kernel_vsyscall+10>: nop
+ // 0xf775742b <__kernel_vsyscall+11>: nop
+ // 0xf775742c <__kernel_vsyscall+12>: nop
+ // 0xf775742d <__kernel_vsyscall+13>: nop
+ // 0xf775742e <__kernel_vsyscall+14>: int $0x80
+ // 0xf7757430 <__kernel_vsyscall+16>: pop %ebp
+ // 0xf7757431 <__kernel_vsyscall+17>: pop %edx
+ // 0xf7757432 <__kernel_vsyscall+18>: pop %ecx
+ // 0xf7757433 <__kernel_vsyscall+19>: ret
+ //
+ // In cases where the sampled thread is blocked in a syscall, its
+ // program counter will point at "pop %ebp". Hence we look for
+ // the sequence "int $0x80; pop %ebp; pop %edx; pop %ecx; ret", and
+ // the corresponding register-recovery actions are:
+ // new_ebp = *(old_esp + 0)
+ // new eip = *(old_esp + 12)
+ // new_esp = old_esp + 16
+ //
+ // It may also be the case that the program counter points two
+ // nops before the "int $0x80", viz, is __kernel_vsyscall+12, in
+ // the case where the syscall has been restarted but the thread
+ // hasn't been rescheduled. The code below doesn't handle that;
+ // it could easily be made to.
+ //
+ if (!ruleset && *aFramesUsed == 1 && ia.Valid() && sp.Valid()) {
+ uintptr_t insns_min, insns_max;
+ uintptr_t eip = ia.Value();
+ bool b = mSegArray->getBoundingCodeSegment(&insns_min, &insns_max, eip);
+ if (b && eip - 2 >= insns_min && eip + 3 <= insns_max) {
+ uint8_t* eipC = (uint8_t*)eip;
+ if (eipC[-2] == 0xCD && eipC[-1] == 0x80 && eipC[0] == 0x5D &&
+ eipC[1] == 0x5A && eipC[2] == 0x59 && eipC[3] == 0xC3) {
+ TaggedUWord sp_plus_0 = sp;
+ TaggedUWord sp_plus_12 = sp;
+ TaggedUWord sp_plus_16 = sp;
+ sp_plus_12 = sp_plus_12 + TaggedUWord(12);
+ sp_plus_16 = sp_plus_16 + TaggedUWord(16);
+ TaggedUWord new_ebp = DerefTUW(sp_plus_0, aStackImg);
+ TaggedUWord new_eip = DerefTUW(sp_plus_12, aStackImg);
+ TaggedUWord new_esp = sp_plus_16;
+ if (new_ebp.Valid() && new_eip.Valid() && new_esp.Valid()) {
+ regs.xbp = new_ebp;
+ regs.xip = new_eip;
+ regs.xsp = new_esp;
+ continue;
+ }
+ }
+ }
+ }
+ ////
+ /////////////////////////////////////////////
+#endif // defined(GP_PLAT_x86_android) || defined(GP_PLAT_x86_linux)
+
+ // So, do we have a ruleset for this address? If so, use it now.
+ if (ruleset) {
+ if (DEBUG_MAIN) {
+ ruleset->Print(ia.Value(), 1 /*bogus, but doesn't matter*/, mLog);
+ mLog("\n");
+ }
+ // Use the RuleSet to compute the registers for the previous
+ // frame. |regs| is modified in-place.
+ UseRuleSet(&regs, aStackImg, ruleset, pfxinstrs);
+ continue;
+ }
+
+#if defined(GP_PLAT_amd64_linux) || defined(GP_PLAT_x86_linux) || \
+ defined(GP_PLAT_amd64_android) || defined(GP_PLAT_x86_android) || \
+ defined(GP_PLAT_amd64_freebsd)
+ // There's no RuleSet for the specified address. On amd64/x86_linux, see if
+ // it's possible to recover the caller's frame by using the frame pointer.
+
+ // We seek to compute (new_IP, new_SP, new_BP) from (old_BP, stack image),
+ // and assume the following layout:
+ //
+ // <--- new_SP
+ // +----------+
+ // | new_IP | (return address)
+ // +----------+
+ // | new_BP | <--- old_BP
+ // +----------+
+ // | .... |
+ // | .... |
+ // | .... |
+ // +----------+ <---- old_SP (arbitrary, but must be <= old_BP)
+
+ const size_t wordSzB = sizeof(uintptr_t);
+ TaggedUWord old_xsp = regs.xsp;
+
+ // points at new_BP ?
+ TaggedUWord old_xbp = regs.xbp;
+ // points at new_IP ?
+ TaggedUWord old_xbp_plus1 = regs.xbp + TaggedUWord(1 * wordSzB);
+ // is the new_SP ?
+ TaggedUWord old_xbp_plus2 = regs.xbp + TaggedUWord(2 * wordSzB);
+
+ if (old_xbp.Valid() && old_xbp.IsAligned() && old_xsp.Valid() &&
+ old_xsp.IsAligned() && old_xsp.Value() <= old_xbp.Value()) {
+ // We don't need to do any range, alignment or validity checks for
+ // addresses passed to DerefTUW, since that performs them itself, and
+ // returns an invalid value on failure. Any such value will poison
+ // subsequent uses, and we do a final check for validity before putting
+ // the computed values into |regs|.
+ TaggedUWord new_xbp = DerefTUW(old_xbp, aStackImg);
+ if (new_xbp.Valid() && new_xbp.IsAligned() &&
+ old_xbp.Value() < new_xbp.Value()) {
+ TaggedUWord new_xip = DerefTUW(old_xbp_plus1, aStackImg);
+ TaggedUWord new_xsp = old_xbp_plus2;
+ if (new_xbp.Valid() && new_xip.Valid() && new_xsp.Valid()) {
+ regs.xbp = new_xbp;
+ regs.xip = new_xip;
+ regs.xsp = new_xsp;
+ (*aFramePointerFramesAcquired)++;
+ continue;
+ }
+ }
+ }
+#elif defined(GP_ARCH_arm64)
+ // Here is an example of generated code for prologue and epilogue..
+ //
+ // stp x29, x30, [sp, #-16]!
+ // mov x29, sp
+ // ...
+ // ldp x29, x30, [sp], #16
+ // ret
+ //
+ // Next is another example of generated code.
+ //
+ // stp x20, x19, [sp, #-32]!
+ // stp x29, x30, [sp, #16]
+ // add x29, sp, #0x10
+ // ...
+ // ldp x29, x30, [sp, #16]
+ // ldp x20, x19, [sp], #32
+ // ret
+ //
+ // Previous x29 and x30 register are stored in the address of x29 register.
+ // But since sp register value depends on local variables, we cannot compute
+ // previous sp register from current sp/fp/lr register and there is no
+ // regular rule for sp register in prologue. But since return address is lr
+ // register, if x29 is valid, we will get return address without sp
+ // register.
+ //
+ // So we assume the following layout that if no rule set. x29 is frame
+ // pointer, so we will be able to compute x29 and x30 .
+ //
+ // +----------+ <--- new_sp (cannot compute)
+ // | .... |
+ // +----------+
+ // | new_lr | (return address)
+ // +----------+
+ // | new_fp | <--- old_fp
+ // +----------+
+ // | .... |
+ // | .... |
+ // +----------+ <---- old_sp (arbitrary, but unused)
+
+ TaggedUWord old_fp = regs.x29;
+ if (old_fp.Valid() && old_fp.IsAligned() && last_valid_sp.Valid() &&
+ last_valid_sp.Value() <= old_fp.Value()) {
+ TaggedUWord new_fp = DerefTUW(old_fp, aStackImg);
+ if (new_fp.Valid() && new_fp.IsAligned() &&
+ old_fp.Value() < new_fp.Value()) {
+ TaggedUWord old_fp_plus1 = old_fp + TaggedUWord(8);
+ TaggedUWord new_lr = DerefTUW(old_fp_plus1, aStackImg);
+ if (new_lr.Valid()) {
+ regs.x29 = new_fp;
+ regs.x30 = new_lr;
+ // When using frame pointer to walk stack, we cannot compute sp
+ // register since we cannot compute sp register from fp/lr/sp
+ // register, and there is no regular rule to compute previous sp
+ // register. So mark as invalid.
+ regs.sp = TaggedUWord();
+ (*aFramePointerFramesAcquired)++;
+ continue;
+ }
+ }
+ }
+#endif // defined(GP_PLAT_amd64_linux) || defined(GP_PLAT_x86_linux) ||
+ // defined(GP_PLAT_amd64_android) || defined(GP_PLAT_x86_android) ||
+ // defined(GP_PLAT_amd64_freebsd)
+
+ // We failed to recover a frame either using CFI or FP chasing, and we
+ // have no other ways to recover the frame. So we have to give up.
+ break;
+
+ } // top level unwind loop
+
+ // END UNWIND
+ /////////////////////////////////////////////////////////
+}
+
+////////////////////////////////////////////////////////////////
+// LUL Unit Testing //
+////////////////////////////////////////////////////////////////
+
+static const int LUL_UNIT_TEST_STACK_SIZE = 32768;
+
+#if defined(GP_ARCH_mips64)
+static __attribute__((noinline)) unsigned long __getpc(void) {
+ unsigned long rtaddr;
+ __asm__ volatile("move %0, $31" : "=r"(rtaddr));
+ return rtaddr;
+}
+#endif
+
+// This function is innermost in the test call sequence. It uses LUL
+// to unwind, and compares the result with the sequence specified in
+// the director string. These need to agree in order for the test to
+// pass. In order not to screw up the results, this function needs
+// to have a not-very big stack frame, since we're only presenting
+// the innermost LUL_UNIT_TEST_STACK_SIZE bytes of stack to LUL, and
+// that chunk unavoidably includes the frame for this function.
+//
+// This function must not be inlined into its callers. Doing so will
+// cause the expected-vs-actual backtrace consistency checking to
+// fail. Prints summary results to |aLUL|'s logging sink and also
+// returns a boolean indicating whether or not the test failed.
+static __attribute__((noinline)) bool GetAndCheckStackTrace(
+ LUL* aLUL, const char* dstring) {
+ // Get hold of the current unwind-start registers.
+ UnwindRegs startRegs;
+ memset(&startRegs, 0, sizeof(startRegs));
+#if defined(GP_ARCH_amd64)
+ volatile uintptr_t block[3];
+ MOZ_ASSERT(sizeof(block) == 24);
+ __asm__ __volatile__(
+ "leaq 0(%%rip), %%r15"
+ "\n\t"
+ "movq %%r15, 0(%0)"
+ "\n\t"
+ "movq %%rsp, 8(%0)"
+ "\n\t"
+ "movq %%rbp, 16(%0)"
+ "\n"
+ :
+ : "r"(&block[0])
+ : "memory", "r15");
+ startRegs.xip = TaggedUWord(block[0]);
+ startRegs.xsp = TaggedUWord(block[1]);
+ startRegs.xbp = TaggedUWord(block[2]);
+ const uintptr_t REDZONE_SIZE = 128;
+ uintptr_t start = block[1] - REDZONE_SIZE;
+#elif defined(GP_PLAT_x86_linux) || defined(GP_PLAT_x86_android)
+ volatile uintptr_t block[3];
+ MOZ_ASSERT(sizeof(block) == 12);
+ __asm__ __volatile__(
+ ".byte 0xE8,0x00,0x00,0x00,0x00" /*call next insn*/
+ "\n\t"
+ "popl %%edi"
+ "\n\t"
+ "movl %%edi, 0(%0)"
+ "\n\t"
+ "movl %%esp, 4(%0)"
+ "\n\t"
+ "movl %%ebp, 8(%0)"
+ "\n"
+ :
+ : "r"(&block[0])
+ : "memory", "edi");
+ startRegs.xip = TaggedUWord(block[0]);
+ startRegs.xsp = TaggedUWord(block[1]);
+ startRegs.xbp = TaggedUWord(block[2]);
+ const uintptr_t REDZONE_SIZE = 0;
+ uintptr_t start = block[1] - REDZONE_SIZE;
+#elif defined(GP_PLAT_arm_linux) || defined(GP_PLAT_arm_android)
+ volatile uintptr_t block[6];
+ MOZ_ASSERT(sizeof(block) == 24);
+ __asm__ __volatile__(
+ "mov r0, r15"
+ "\n\t"
+ "str r0, [%0, #0]"
+ "\n\t"
+ "str r14, [%0, #4]"
+ "\n\t"
+ "str r13, [%0, #8]"
+ "\n\t"
+ "str r12, [%0, #12]"
+ "\n\t"
+ "str r11, [%0, #16]"
+ "\n\t"
+ "str r7, [%0, #20]"
+ "\n"
+ :
+ : "r"(&block[0])
+ : "memory", "r0");
+ startRegs.r15 = TaggedUWord(block[0]);
+ startRegs.r14 = TaggedUWord(block[1]);
+ startRegs.r13 = TaggedUWord(block[2]);
+ startRegs.r12 = TaggedUWord(block[3]);
+ startRegs.r11 = TaggedUWord(block[4]);
+ startRegs.r7 = TaggedUWord(block[5]);
+ const uintptr_t REDZONE_SIZE = 0;
+ uintptr_t start = block[1] - REDZONE_SIZE;
+#elif defined(GP_ARCH_arm64)
+ volatile uintptr_t block[4];
+ MOZ_ASSERT(sizeof(block) == 32);
+ __asm__ __volatile__(
+ "adr x0, . \n\t"
+ "str x0, [%0, #0] \n\t"
+ "str x29, [%0, #8] \n\t"
+ "str x30, [%0, #16] \n\t"
+ "mov x0, sp \n\t"
+ "str x0, [%0, #24] \n\t"
+ :
+ : "r"(&block[0])
+ : "memory", "x0");
+ startRegs.pc = TaggedUWord(block[0]);
+ startRegs.x29 = TaggedUWord(block[1]);
+ startRegs.x30 = TaggedUWord(block[2]);
+ startRegs.sp = TaggedUWord(block[3]);
+ const uintptr_t REDZONE_SIZE = 0;
+ uintptr_t start = block[1] - REDZONE_SIZE;
+#elif defined(GP_ARCH_mips64)
+ volatile uintptr_t block[3];
+ MOZ_ASSERT(sizeof(block) == 24);
+ __asm__ __volatile__(
+ "sd $29, 8(%0) \n"
+ "sd $30, 16(%0) \n"
+ :
+ : "r"(block)
+ : "memory");
+ block[0] = __getpc();
+ startRegs.pc = TaggedUWord(block[0]);
+ startRegs.sp = TaggedUWord(block[1]);
+ startRegs.fp = TaggedUWord(block[2]);
+ const uintptr_t REDZONE_SIZE = 0;
+ uintptr_t start = block[1] - REDZONE_SIZE;
+#else
+# error "Unsupported platform"
+#endif
+
+ // Get hold of the innermost LUL_UNIT_TEST_STACK_SIZE bytes of the
+ // stack.
+ uintptr_t end = start + LUL_UNIT_TEST_STACK_SIZE;
+ uintptr_t ws = sizeof(void*);
+ start &= ~(ws - 1);
+ end &= ~(ws - 1);
+ uintptr_t nToCopy = end - start;
+ if (nToCopy > lul::N_STACK_BYTES) {
+ nToCopy = lul::N_STACK_BYTES;
+ }
+ MOZ_ASSERT(nToCopy <= lul::N_STACK_BYTES);
+ StackImage* stackImg = new StackImage();
+ stackImg->mLen = nToCopy;
+ stackImg->mStartAvma = start;
+ if (nToCopy > 0) {
+ MOZ_MAKE_MEM_DEFINED((void*)start, nToCopy);
+ memcpy(&stackImg->mContents[0], (void*)start, nToCopy);
+ }
+
+ // Unwind it.
+ const int MAX_TEST_FRAMES = 64;
+ uintptr_t framePCs[MAX_TEST_FRAMES];
+ uintptr_t frameSPs[MAX_TEST_FRAMES];
+ size_t framesAvail = mozilla::ArrayLength(framePCs);
+ size_t framesUsed = 0;
+ size_t framePointerFramesAcquired = 0;
+ aLUL->Unwind(&framePCs[0], &frameSPs[0], &framesUsed,
+ &framePointerFramesAcquired, framesAvail, &startRegs, stackImg);
+
+ delete stackImg;
+
+ // if (0) {
+ // // Show what we have.
+ // fprintf(stderr, "Got %d frames:\n", (int)framesUsed);
+ // for (size_t i = 0; i < framesUsed; i++) {
+ // fprintf(stderr, " [%2d] SP %p PC %p\n",
+ // (int)i, (void*)frameSPs[i], (void*)framePCs[i]);
+ // }
+ // fprintf(stderr, "\n");
+ //}
+
+ // Check to see if there's a consistent binding between digits in
+ // the director string ('1' .. '8') and the PC values acquired by
+ // the unwind. If there isn't, the unwinding has failed somehow.
+ uintptr_t binding[8]; // binding for '1' .. binding for '8'
+ memset((void*)binding, 0, sizeof(binding));
+
+ // The general plan is to work backwards along the director string
+ // and forwards along the framePCs array. Doing so corresponds to
+ // working outwards from the innermost frame of the recursive test set.
+ const char* cursor = dstring;
+
+ // Find the end. This leaves |cursor| two bytes past the first
+ // character we want to look at -- see comment below.
+ while (*cursor) cursor++;
+
+ // Counts the number of consistent frames.
+ size_t nConsistent = 0;
+
+ // Iterate back to the start of the director string. The starting
+ // points are a bit complex. We can't use framePCs[0] because that
+ // contains the PC in this frame (above). We can't use framePCs[1]
+ // because that will contain the PC at return point in the recursive
+ // test group (TestFn[1-8]) for their call "out" to this function,
+ // GetAndCheckStackTrace. Although LUL will compute a correct
+ // return address, that will not be the same return address as for a
+ // recursive call out of the the function to another function in the
+ // group. Hence we can only start consistency checking at
+ // framePCs[2].
+ //
+ // To be consistent, then, we must ignore the last element in the
+ // director string as that corresponds to framePCs[1]. Hence the
+ // start points are: framePCs[2] and the director string 2 bytes
+ // before the terminating zero.
+ //
+ // Also as a result of this, the number of consistent frames counted
+ // will always be one less than the length of the director string
+ // (not including its terminating zero).
+ size_t frameIx;
+ for (cursor = cursor - 2, frameIx = 2;
+ cursor >= dstring && frameIx < framesUsed; cursor--, frameIx++) {
+ char c = *cursor;
+ uintptr_t pc = framePCs[frameIx];
+ // If this doesn't hold, the director string is ill-formed.
+ MOZ_ASSERT(c >= '1' && c <= '8');
+ int n = ((int)c) - ((int)'1');
+ if (binding[n] == 0) {
+ // There's no binding for |c| yet, so install |pc| and carry on.
+ binding[n] = pc;
+ nConsistent++;
+ continue;
+ }
+ // There's a pre-existing binding for |c|. Check it's consistent.
+ if (binding[n] != pc) {
+ // Not consistent. Give up now.
+ break;
+ }
+ // Consistent. Keep going.
+ nConsistent++;
+ }
+
+ // So, did we succeed?
+ bool passed = nConsistent + 1 == strlen(dstring);
+
+ // Show the results.
+ char buf[200];
+ SprintfLiteral(buf, "LULUnitTest: dstring = %s\n", dstring);
+ buf[sizeof(buf) - 1] = 0;
+ aLUL->mLog(buf);
+ SprintfLiteral(buf, "LULUnitTest: %d consistent, %d in dstring: %s\n",
+ (int)nConsistent, (int)strlen(dstring),
+ passed ? "PASS" : "FAIL");
+ buf[sizeof(buf) - 1] = 0;
+ aLUL->mLog(buf);
+
+ return !passed;
+}
+
+// Macro magic to create a set of 8 mutually recursive functions with
+// varying frame sizes. These will recurse amongst themselves as
+// specified by |strP|, the directory string, and call
+// GetAndCheckStackTrace when the string becomes empty, passing it the
+// original value of the string. This checks the result, printing
+// results on |aLUL|'s logging sink, and also returns a boolean
+// indicating whether or not the results are acceptable (correct).
+
+#define DECL_TEST_FN(NAME) \
+ bool NAME(LUL* aLUL, const char* strPorig, const char* strP);
+
+#define GEN_TEST_FN(NAME, FRAMESIZE) \
+ bool NAME(LUL* aLUL, const char* strPorig, const char* strP) { \
+ /* Create a frame of size (at least) FRAMESIZE, so that the */ \
+ /* 8 functions created by this macro offer some variation in frame */ \
+ /* sizes. This isn't as simple as it might seem, since a clever */ \
+ /* optimizing compiler (eg, clang-5) detects that the array is unused */ \
+ /* and removes it. We try to defeat this by passing it to a function */ \
+ /* in a different compilation unit, and hoping that clang does not */ \
+ /* notice that the call is a no-op. */ \
+ char space[FRAMESIZE]; \
+ Unused << write(1, space, 0); /* write zero bytes of |space| to stdout */ \
+ \
+ if (*strP == '\0') { \
+ /* We've come to the end of the director string. */ \
+ /* Take a stack snapshot. */ \
+ /* We purposefully use a negation to avoid tail-call optimization */ \
+ return !GetAndCheckStackTrace(aLUL, strPorig); \
+ } else { \
+ /* Recurse onwards. This is a bit subtle. The obvious */ \
+ /* thing to do here is call onwards directly, from within the */ \
+ /* arms of the case statement. That gives a problem in that */ \
+ /* there will be multiple return points inside each function when */ \
+ /* unwinding, so it will be difficult to check for consistency */ \
+ /* against the director string. Instead, we make an indirect */ \
+ /* call, so as to guarantee that there is only one call site */ \
+ /* within each function. This does assume that the compiler */ \
+ /* won't transform it back to the simple direct-call form. */ \
+ /* To discourage it from doing so, the call is bracketed with */ \
+ /* __asm__ __volatile__ sections so as to make it not-movable. */ \
+ bool (*nextFn)(LUL*, const char*, const char*) = NULL; \
+ switch (*strP) { \
+ case '1': \
+ nextFn = TestFn1; \
+ break; \
+ case '2': \
+ nextFn = TestFn2; \
+ break; \
+ case '3': \
+ nextFn = TestFn3; \
+ break; \
+ case '4': \
+ nextFn = TestFn4; \
+ break; \
+ case '5': \
+ nextFn = TestFn5; \
+ break; \
+ case '6': \
+ nextFn = TestFn6; \
+ break; \
+ case '7': \
+ nextFn = TestFn7; \
+ break; \
+ case '8': \
+ nextFn = TestFn8; \
+ break; \
+ default: \
+ nextFn = TestFn8; \
+ break; \
+ } \
+ /* "use" |space| immediately after the recursive call, */ \
+ /* so as to dissuade clang from deallocating the space while */ \
+ /* the call is active, or otherwise messing with the stack frame. */ \
+ __asm__ __volatile__("" ::: "cc", "memory"); \
+ bool passed = nextFn(aLUL, strPorig, strP + 1); \
+ Unused << write(1, space, 0); \
+ __asm__ __volatile__("" ::: "cc", "memory"); \
+ return passed; \
+ } \
+ }
+
+// The test functions are mutually recursive, so it is necessary to
+// declare them before defining them.
+DECL_TEST_FN(TestFn1)
+DECL_TEST_FN(TestFn2)
+DECL_TEST_FN(TestFn3)
+DECL_TEST_FN(TestFn4)
+DECL_TEST_FN(TestFn5)
+DECL_TEST_FN(TestFn6)
+DECL_TEST_FN(TestFn7)
+DECL_TEST_FN(TestFn8)
+
+GEN_TEST_FN(TestFn1, 123)
+GEN_TEST_FN(TestFn2, 456)
+GEN_TEST_FN(TestFn3, 789)
+GEN_TEST_FN(TestFn4, 23)
+GEN_TEST_FN(TestFn5, 47)
+GEN_TEST_FN(TestFn6, 117)
+GEN_TEST_FN(TestFn7, 1)
+GEN_TEST_FN(TestFn8, 99)
+
+// This starts the test sequence going. Call here to generate a
+// sequence of calls as directed by the string |dstring|. The call
+// sequence will, from its innermost frame, finish by calling
+// GetAndCheckStackTrace() and passing it |dstring|.
+// GetAndCheckStackTrace() will unwind the stack, check consistency
+// of those results against |dstring|, and print a pass/fail message
+// to aLUL's logging sink. It also updates the counters in *aNTests
+// and aNTestsPassed.
+__attribute__((noinline)) void TestUnw(/*OUT*/ int* aNTests,
+ /*OUT*/ int* aNTestsPassed, LUL* aLUL,
+ const char* dstring) {
+ // Ensure that the stack has at least this much space on it. This
+ // makes it safe to saw off the top LUL_UNIT_TEST_STACK_SIZE bytes
+ // and hand it to LUL. Safe in the sense that no segfault can
+ // happen because the stack is at least this big. This is all
+ // somewhat dubious in the sense that a sufficiently clever compiler
+ // (clang, for one) can figure out that space[] is unused and delete
+ // it from the frame. Hence the somewhat elaborate hoop jumping to
+ // fill it up before the call and to at least appear to use the
+ // value afterwards.
+ int i;
+ volatile char space[LUL_UNIT_TEST_STACK_SIZE];
+ for (i = 0; i < LUL_UNIT_TEST_STACK_SIZE; i++) {
+ space[i] = (char)(i & 0x7F);
+ }
+
+ // Really run the test.
+ bool passed = TestFn1(aLUL, dstring, dstring);
+
+ // Appear to use space[], by visiting the value to compute some kind
+ // of checksum, and then (apparently) using the checksum.
+ int sum = 0;
+ for (i = 0; i < LUL_UNIT_TEST_STACK_SIZE; i++) {
+ // If this doesn't fool LLVM, I don't know what will.
+ sum += space[i] - 3 * i;
+ }
+ __asm__ __volatile__("" : : "r"(sum));
+
+ // Update the counters.
+ (*aNTests)++;
+ if (passed) {
+ (*aNTestsPassed)++;
+ }
+}
+
+void RunLulUnitTests(/*OUT*/ int* aNTests, /*OUT*/ int* aNTestsPassed,
+ LUL* aLUL) {
+ aLUL->mLog(":\n");
+ aLUL->mLog("LULUnitTest: BEGIN\n");
+ *aNTests = *aNTestsPassed = 0;
+ TestUnw(aNTests, aNTestsPassed, aLUL, "11111111");
+ TestUnw(aNTests, aNTestsPassed, aLUL, "11222211");
+ TestUnw(aNTests, aNTestsPassed, aLUL, "111222333");
+ TestUnw(aNTests, aNTestsPassed, aLUL, "1212121231212331212121212121212");
+ TestUnw(aNTests, aNTestsPassed, aLUL, "31415827271828325332173258");
+ TestUnw(aNTests, aNTestsPassed, aLUL,
+ "123456781122334455667788777777777777777777777");
+ aLUL->mLog("LULUnitTest: END\n");
+ aLUL->mLog(":\n");
+}
+
+} // namespace lul
diff --git a/tools/profiler/lul/LulMain.h b/tools/profiler/lul/LulMain.h
new file mode 100644
index 0000000000..d386bd5c4f
--- /dev/null
+++ b/tools/profiler/lul/LulMain.h
@@ -0,0 +1,378 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef LulMain_h
+#define LulMain_h
+
+#include "PlatformMacros.h"
+#include "mozilla/Atomics.h"
+#include "mozilla/MemoryReporting.h"
+#include "mozilla/ProfilerUtils.h"
+
+// LUL: A Lightweight Unwind Library.
+// This file provides the end-user (external) interface for LUL.
+
+// Some comments about naming in the implementation. These are safe
+// to ignore if you are merely using LUL, but are important if you
+// hack on its internals.
+//
+// Debuginfo readers in general have tended to use the word "address"
+// to mean several different things. This sometimes makes them
+// difficult to understand and maintain. LUL tries hard to avoid
+// using the word "address" and instead uses the following more
+// precise terms:
+//
+// * SVMA ("Stated Virtual Memory Address"): this is an address of a
+// symbol (etc) as it is stated in the symbol table, or other
+// metadata, of an object. Such values are typically small and
+// start from zero or thereabouts, unless the object has been
+// prelinked.
+//
+// * AVMA ("Actual Virtual Memory Address"): this is the address of a
+// symbol (etc) in a running process, that is, once the associated
+// object has been mapped into a process. Such values are typically
+// much larger than SVMAs, since objects can get mapped arbitrarily
+// far along the address space.
+//
+// * "Bias": the difference between AVMA and SVMA for a given symbol
+// (specifically, AVMA - SVMA). The bias is always an integral
+// number of pages. Once we know the bias for a given object's
+// text section (for example), we can compute the AVMAs of all of
+// its text symbols by adding the bias to their SVMAs.
+//
+// * "Image address": typically, to read debuginfo from an object we
+// will temporarily mmap in the file so as to read symbol tables
+// etc. Addresses in this temporary mapping are called "Image
+// addresses". Note that the temporary mapping is entirely
+// unrelated to the mappings of the file that the dynamic linker
+// must perform merely in order to get the program to run. Hence
+// image addresses are unrelated to either SVMAs or AVMAs.
+
+namespace lul {
+
+// A machine word plus validity tag.
+class TaggedUWord {
+ public:
+ // RUNS IN NO-MALLOC CONTEXT
+ // Construct a valid one.
+ explicit TaggedUWord(uintptr_t w) : mValue(w), mValid(true) {}
+
+ // RUNS IN NO-MALLOC CONTEXT
+ // Construct an invalid one.
+ TaggedUWord() : mValue(0), mValid(false) {}
+
+ // RUNS IN NO-MALLOC CONTEXT
+ TaggedUWord operator+(TaggedUWord rhs) const {
+ return (Valid() && rhs.Valid()) ? TaggedUWord(Value() + rhs.Value())
+ : TaggedUWord();
+ }
+
+ // RUNS IN NO-MALLOC CONTEXT
+ TaggedUWord operator-(TaggedUWord rhs) const {
+ return (Valid() && rhs.Valid()) ? TaggedUWord(Value() - rhs.Value())
+ : TaggedUWord();
+ }
+
+ // RUNS IN NO-MALLOC CONTEXT
+ TaggedUWord operator&(TaggedUWord rhs) const {
+ return (Valid() && rhs.Valid()) ? TaggedUWord(Value() & rhs.Value())
+ : TaggedUWord();
+ }
+
+ // RUNS IN NO-MALLOC CONTEXT
+ TaggedUWord operator|(TaggedUWord rhs) const {
+ return (Valid() && rhs.Valid()) ? TaggedUWord(Value() | rhs.Value())
+ : TaggedUWord();
+ }
+
+ // RUNS IN NO-MALLOC CONTEXT
+ TaggedUWord CmpGEs(TaggedUWord rhs) const {
+ if (Valid() && rhs.Valid()) {
+ intptr_t s1 = (intptr_t)Value();
+ intptr_t s2 = (intptr_t)rhs.Value();
+ return TaggedUWord(s1 >= s2 ? 1 : 0);
+ }
+ return TaggedUWord();
+ }
+
+ // RUNS IN NO-MALLOC CONTEXT
+ TaggedUWord operator<<(TaggedUWord rhs) const {
+ if (Valid() && rhs.Valid()) {
+ uintptr_t shift = rhs.Value();
+ if (shift < 8 * sizeof(uintptr_t)) return TaggedUWord(Value() << shift);
+ }
+ return TaggedUWord();
+ }
+
+ // RUNS IN NO-MALLOC CONTEXT
+ // Is equal? Note: non-validity on either side gives non-equality.
+ bool operator==(TaggedUWord other) const {
+ return (mValid && other.Valid()) ? (mValue == other.Value()) : false;
+ }
+
+ // RUNS IN NO-MALLOC CONTEXT
+ // Is it word-aligned?
+ bool IsAligned() const {
+ return mValid && (mValue & (sizeof(uintptr_t) - 1)) == 0;
+ }
+
+ // RUNS IN NO-MALLOC CONTEXT
+ uintptr_t Value() const { return mValue; }
+
+ // RUNS IN NO-MALLOC CONTEXT
+ bool Valid() const { return mValid; }
+
+ private:
+ uintptr_t mValue;
+ bool mValid;
+};
+
+// The registers, with validity tags, that will be unwound.
+
+struct UnwindRegs {
+#if defined(GP_ARCH_arm)
+ TaggedUWord r7;
+ TaggedUWord r11;
+ TaggedUWord r12;
+ TaggedUWord r13;
+ TaggedUWord r14;
+ TaggedUWord r15;
+#elif defined(GP_ARCH_arm64)
+ TaggedUWord x29;
+ TaggedUWord x30;
+ TaggedUWord sp;
+ TaggedUWord pc;
+#elif defined(GP_ARCH_amd64) || defined(GP_ARCH_x86)
+ TaggedUWord xbp;
+ TaggedUWord xsp;
+ TaggedUWord xip;
+#elif defined(GP_ARCH_mips64)
+ TaggedUWord sp;
+ TaggedUWord fp;
+ TaggedUWord pc;
+#else
+# error "Unknown plat"
+#endif
+};
+
+// The maximum number of bytes in a stack snapshot. This value can be increased
+// if necessary, but testing showed that 160k is enough to obtain good
+// backtraces on x86_64 Linux. Most backtraces fit comfortably into 4-8k of
+// stack space, but we do have some very deep stacks occasionally. Please see
+// the comments in DoNativeBacktrace as to why it's OK to have this value be so
+// large.
+static const size_t N_STACK_BYTES = 160 * 1024;
+
+// The stack chunk image that will be unwound.
+struct StackImage {
+ // [start_avma, +len) specify the address range in the buffer.
+ // Obviously we require 0 <= len <= N_STACK_BYTES.
+ uintptr_t mStartAvma;
+ size_t mLen;
+ uint8_t mContents[N_STACK_BYTES];
+};
+
+// Statistics collection for the unwinder.
+template <typename T>
+class LULStats {
+ public:
+ LULStats() : mContext(0), mCFI(0), mFP(0) {}
+
+ template <typename S>
+ explicit LULStats(const LULStats<S>& aOther)
+ : mContext(aOther.mContext), mCFI(aOther.mCFI), mFP(aOther.mFP) {}
+
+ template <typename S>
+ LULStats<T>& operator=(const LULStats<S>& aOther) {
+ mContext = aOther.mContext;
+ mCFI = aOther.mCFI;
+ mFP = aOther.mFP;
+ return *this;
+ }
+
+ template <typename S>
+ uint32_t operator-(const LULStats<S>& aOther) {
+ return (mContext - aOther.mContext) + (mCFI - aOther.mCFI) +
+ (mFP - aOther.mFP);
+ }
+
+ T mContext; // Number of context frames
+ T mCFI; // Number of CFI/EXIDX frames
+ T mFP; // Number of frame-pointer recovered frames
+};
+
+// The core unwinder library class. Just one of these is needed, and
+// it can be shared by multiple unwinder threads.
+//
+// The library operates in one of two modes.
+//
+// * Admin mode. The library is this state after creation. In Admin
+// mode, no unwinding may be performed. It is however allowable to
+// perform administrative tasks -- primarily, loading of unwind info
+// -- in this mode. In particular, it is safe for the library to
+// perform dynamic memory allocation in this mode. Safe in the
+// sense that there is no risk of deadlock against unwinding threads
+// that might -- because of where they have been sampled -- hold the
+// system's malloc lock.
+//
+// * Unwind mode. In this mode, calls to ::Unwind may be made, but
+// nothing else. ::Unwind guarantees not to make any dynamic memory
+// requests, so as to guarantee that the calling thread won't
+// deadlock in the case where it already holds the system's malloc lock.
+//
+// The library is created in Admin mode. After debuginfo is loaded,
+// the caller must switch it into Unwind mode by calling
+// ::EnableUnwinding. There is no way to switch it back to Admin mode
+// after that. To safely switch back to Admin mode would require the
+// caller (or other external agent) to guarantee that there are no
+// pending ::Unwind calls.
+
+class PriMap;
+class SegArray;
+class UniqueStringUniverse;
+
+class LUL {
+ public:
+ // Create; supply a logging sink. Sets the object in Admin mode.
+ explicit LUL(void (*aLog)(const char*));
+
+ // Destroy. Caller is responsible for ensuring that no other
+ // threads are in Unwind calls. All resources are freed and all
+ // registered unwinder threads are deregistered. Can be called
+ // either in Admin or Unwind mode.
+ ~LUL();
+
+ // Notify the library that unwinding is now allowed and so
+ // admin-mode calls are no longer allowed. The object is initially
+ // created in admin mode. The only possible transition is
+ // admin->unwinding, therefore.
+ void EnableUnwinding();
+
+ // Notify of a new r-x mapping, and load the associated unwind info.
+ // The filename is strdup'd and used for debug printing. If
+ // aMappedImage is NULL, this function will mmap/munmap the file
+ // itself, so as to be able to read the unwind info. If
+ // aMappedImage is non-NULL then it is assumed to point to a
+ // called-supplied and caller-managed mapped image of the file.
+ // May only be called in Admin mode.
+ void NotifyAfterMap(uintptr_t aRXavma, size_t aSize, const char* aFileName,
+ const void* aMappedImage);
+
+ // In rare cases we know an executable area exists but don't know
+ // what the associated file is. This call notifies LUL of such
+ // areas. This is important for correct functioning of stack
+ // scanning and of the x86-{linux,android} special-case
+ // __kernel_syscall function handling.
+ // This must be called only after the code area in
+ // question really has been mapped.
+ // May only be called in Admin mode.
+ void NotifyExecutableArea(uintptr_t aRXavma, size_t aSize);
+
+ // Notify that a mapped area has been unmapped; discard any
+ // associated unwind info. Acquires mRWlock for writing. Note that
+ // to avoid segfaulting the stack-scan unwinder, which inspects code
+ // areas, this must be called before the code area in question is
+ // really unmapped. Note that, unlike NotifyAfterMap(), this
+ // function takes the start and end addresses of the range to be
+ // unmapped, rather than a start and a length parameter. This is so
+ // as to make it possible to notify an unmap for the entire address
+ // space using a single call.
+ // May only be called in Admin mode.
+ void NotifyBeforeUnmap(uintptr_t aAvmaMin, uintptr_t aAvmaMax);
+
+ // Apply NotifyBeforeUnmap to the entire address space. This causes
+ // LUL to discard all unwind and executable-area information for the
+ // entire address space.
+ // May only be called in Admin mode.
+ void NotifyBeforeUnmapAll() { NotifyBeforeUnmap(0, UINTPTR_MAX); }
+
+ // Returns the number of mappings currently registered.
+ // May only be called in Admin mode.
+ size_t CountMappings();
+
+ // Unwind |aStackImg| starting with the context in |aStartRegs|.
+ // Write the number of frames recovered in *aFramesUsed. Put
+ // the PC values in aFramePCs[0 .. *aFramesUsed-1] and
+ // the SP values in aFrameSPs[0 .. *aFramesUsed-1].
+ // |aFramesAvail| is the size of the two output arrays and hence the
+ // largest possible value of *aFramesUsed. PC values are always
+ // valid, and the unwind will stop when the PC becomes invalid, but
+ // the SP values might be invalid, in which case the value zero will
+ // be written in the relevant frameSPs[] slot.
+ //
+ // This function assumes that the SP values increase as it unwinds
+ // away from the innermost frame -- that is, that the stack grows
+ // down. It monitors SP values as it unwinds to check they
+ // decrease, so as to avoid looping on corrupted stacks.
+ //
+ // May only be called in Unwind mode. Multiple threads may unwind
+ // at once. LUL user is responsible for ensuring that no thread makes
+ // any Admin calls whilst in Unwind mode.
+ // MOZ_CRASHes if the calling thread is not registered for unwinding.
+ //
+ // The calling thread must previously have been registered via a call to
+ // RegisterSampledThread.
+ void Unwind(/*OUT*/ uintptr_t* aFramePCs,
+ /*OUT*/ uintptr_t* aFrameSPs,
+ /*OUT*/ size_t* aFramesUsed,
+ /*OUT*/ size_t* aFramePointerFramesAcquired, size_t aFramesAvail,
+ UnwindRegs* aStartRegs, StackImage* aStackImg);
+
+ // The logging sink. Call to send debug strings to the caller-
+ // specified destination. Can only be called by the Admin thread.
+ void (*mLog)(const char*);
+
+ // Statistics relating to unwinding. These have to be atomic since
+ // unwinding can occur on different threads simultaneously.
+ LULStats<mozilla::Atomic<uint32_t>> mStats;
+
+ // Possibly show the statistics. This may not be called from any
+ // registered sampling thread, since it involves I/O.
+ void MaybeShowStats();
+
+ size_t SizeOfIncludingThis(mozilla::MallocSizeOf) const;
+
+ private:
+ // The statistics counters at the point where they were last printed.
+ LULStats<uint32_t> mStatsPrevious;
+
+ // Are we in admin mode? Initially |true| but changes to |false|
+ // once unwinding begins.
+ bool mAdminMode;
+
+ // The thread ID associated with admin mode. This is the only thread
+ // that is allowed do perform non-Unwind calls on this object. Conversely,
+ // no registered Unwinding thread may be the admin thread. This is so
+ // as to clearly partition the one thread that may do dynamic memory
+ // allocation from the threads that are being sampled, since the latter
+ // absolutely may not do dynamic memory allocation.
+ ProfilerThreadId mAdminThreadId;
+
+ // The top level mapping from code address ranges to postprocessed
+ // unwind info. Basically a sorted array of (addr, len, info)
+ // records. This field is updated by NotifyAfterMap and NotifyBeforeUnmap.
+ PriMap* mPriMap;
+
+ // An auxiliary structure that records which address ranges are
+ // mapped r-x, for the benefit of the stack scanner.
+ SegArray* mSegArray;
+
+ // A UniqueStringUniverse that holds all the strdup'd strings created
+ // whilst reading unwind information. This is included so as to make
+ // it possible to free them in ~LUL.
+ UniqueStringUniverse* mUSU;
+};
+
+// Run unit tests on an initialised, loaded-up LUL instance, and print
+// summary results on |aLUL|'s logging sink. Also return the number
+// of tests run in *aNTests and the number that passed in
+// *aNTestsPassed.
+void RunLulUnitTests(/*OUT*/ int* aNTests, /*OUT*/ int* aNTestsPassed,
+ LUL* aLUL);
+
+} // namespace lul
+
+#endif // LulMain_h
diff --git a/tools/profiler/lul/LulMainInt.h b/tools/profiler/lul/LulMainInt.h
new file mode 100644
index 0000000000..001a4aecfb
--- /dev/null
+++ b/tools/profiler/lul/LulMainInt.h
@@ -0,0 +1,631 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef LulMainInt_h
+#define LulMainInt_h
+
+#include "PlatformMacros.h"
+#include "LulMain.h" // for TaggedUWord
+
+#include <string>
+#include <vector>
+
+#include "mozilla/Assertions.h"
+#include "mozilla/HashFunctions.h"
+#include "mozilla/HashTable.h"
+#include "mozilla/Sprintf.h"
+
+// This file provides an internal interface inside LUL. If you are an
+// end-user of LUL, do not include it in your code. The end-user
+// interface is in LulMain.h.
+
+namespace lul {
+
+using std::vector;
+
+////////////////////////////////////////////////////////////////
+// DW_REG_ constants //
+////////////////////////////////////////////////////////////////
+
+// These are the Dwarf CFI register numbers, as (presumably) defined
+// in the ELF ABI supplements for each architecture.
+
+enum DW_REG_NUMBER {
+ // No real register has this number. It's convenient to be able to
+ // treat the CFA (Canonical Frame Address) as "just another
+ // register", though.
+ DW_REG_CFA = -1,
+#if defined(GP_ARCH_arm)
+ // ARM registers
+ DW_REG_ARM_R7 = 7,
+ DW_REG_ARM_R11 = 11,
+ DW_REG_ARM_R12 = 12,
+ DW_REG_ARM_R13 = 13,
+ DW_REG_ARM_R14 = 14,
+ DW_REG_ARM_R15 = 15,
+#elif defined(GP_ARCH_arm64)
+ // aarch64 registers
+ DW_REG_AARCH64_X29 = 29,
+ DW_REG_AARCH64_X30 = 30,
+ DW_REG_AARCH64_SP = 31,
+#elif defined(GP_ARCH_amd64)
+ // Because the X86 (32 bit) and AMD64 (64 bit) summarisers are
+ // combined, a merged set of register constants is needed.
+ DW_REG_INTEL_XBP = 6,
+ DW_REG_INTEL_XSP = 7,
+ DW_REG_INTEL_XIP = 16,
+#elif defined(GP_ARCH_x86)
+ DW_REG_INTEL_XBP = 5,
+ DW_REG_INTEL_XSP = 4,
+ DW_REG_INTEL_XIP = 8,
+#elif defined(GP_ARCH_mips64)
+ DW_REG_MIPS_SP = 29,
+ DW_REG_MIPS_FP = 30,
+ DW_REG_MIPS_PC = 34,
+#else
+# error "Unknown arch"
+#endif
+};
+
+////////////////////////////////////////////////////////////////
+// PfxExpr //
+////////////////////////////////////////////////////////////////
+
+enum PfxExprOp {
+ // meaning of mOperand effect on stack
+ PX_Start, // bool start-with-CFA? start, with CFA on stack, or not
+ PX_End, // none stop; result is at top of stack
+ PX_SImm32, // int32 push signed int32
+ PX_DwReg, // DW_REG_NUMBER push value of the specified reg
+ PX_Deref, // none pop X ; push *X
+ PX_Add, // none pop X ; pop Y ; push Y + X
+ PX_Sub, // none pop X ; pop Y ; push Y - X
+ PX_And, // none pop X ; pop Y ; push Y & X
+ PX_Or, // none pop X ; pop Y ; push Y | X
+ PX_CmpGES, // none pop X ; pop Y ; push (Y >=s X) ? 1 : 0
+ PX_Shl // none pop X ; pop Y ; push Y << X
+};
+
+struct PfxInstr {
+ PfxInstr(PfxExprOp opcode, int32_t operand)
+ : mOpcode(opcode), mOperand(operand) {}
+ explicit PfxInstr(PfxExprOp opcode) : mOpcode(opcode), mOperand(0) {}
+ bool operator==(const PfxInstr& other) const {
+ return mOpcode == other.mOpcode && mOperand == other.mOperand;
+ }
+ PfxExprOp mOpcode;
+ int32_t mOperand;
+};
+
+static_assert(sizeof(PfxInstr) <= 8, "PfxInstr size changed unexpectedly");
+
+// Evaluate the prefix expression whose PfxInstrs start at aPfxInstrs[start].
+// In the case of any mishap (stack over/underflow, running off the end of
+// the instruction vector, obviously malformed sequences),
+// return an invalid TaggedUWord.
+// RUNS IN NO-MALLOC CONTEXT
+TaggedUWord EvaluatePfxExpr(int32_t start, const UnwindRegs* aOldRegs,
+ TaggedUWord aCFA, const StackImage* aStackImg,
+ const vector<PfxInstr>& aPfxInstrs);
+
+////////////////////////////////////////////////////////////////
+// LExpr //
+////////////////////////////////////////////////////////////////
+
+// An expression -- very primitive. Denotes either "register +
+// offset", a dereferenced version of the same, or a reference to a
+// prefix expression stored elsewhere. So as to allow convenient
+// handling of Dwarf-derived unwind info, the register may also denote
+// the CFA. A large number of these need to be stored, so we ensure
+// it fits into 8 bytes. See comment below on RuleSet to see how
+// expressions fit into the bigger picture.
+
+enum LExprHow {
+ UNKNOWN = 0, // This LExpr denotes no value.
+ NODEREF, // Value is (mReg + mOffset).
+ DEREF, // Value is *(mReg + mOffset).
+ PFXEXPR // Value is EvaluatePfxExpr(secMap->mPfxInstrs[mOffset])
+};
+
+inline static const char* NameOf_LExprHow(LExprHow how) {
+ switch (how) {
+ case UNKNOWN:
+ return "UNKNOWN";
+ case NODEREF:
+ return "NODEREF";
+ case DEREF:
+ return "DEREF";
+ case PFXEXPR:
+ return "PFXEXPR";
+ default:
+ return "LExpr-??";
+ }
+}
+
+struct LExpr {
+ // Denotes an expression with no value.
+ LExpr() : mHow(UNKNOWN), mReg(0), mOffset(0) {}
+
+ // Denotes any expressible expression.
+ LExpr(LExprHow how, int16_t reg, int32_t offset)
+ : mHow(how), mReg(reg), mOffset(offset) {
+ switch (how) {
+ case UNKNOWN:
+ MOZ_ASSERT(reg == 0 && offset == 0);
+ break;
+ case NODEREF:
+ break;
+ case DEREF:
+ break;
+ case PFXEXPR:
+ MOZ_ASSERT(reg == 0 && offset >= 0);
+ break;
+ default:
+ MOZ_RELEASE_ASSERT(0, "LExpr::LExpr: invalid how");
+ }
+ }
+
+ // Hash it, carefully looking only at defined parts.
+ mozilla::HashNumber hash() const {
+ mozilla::HashNumber h = mHow;
+ switch (mHow) {
+ case UNKNOWN:
+ break;
+ case NODEREF:
+ case DEREF:
+ h = mozilla::AddToHash(h, mReg);
+ h = mozilla::AddToHash(h, mOffset);
+ break;
+ case PFXEXPR:
+ h = mozilla::AddToHash(h, mOffset);
+ break;
+ default:
+ MOZ_RELEASE_ASSERT(0, "LExpr::hash: invalid how");
+ }
+ return h;
+ }
+
+ // And structural equality.
+ bool equals(const LExpr& other) const {
+ if (mHow != other.mHow) {
+ return false;
+ }
+ switch (mHow) {
+ case UNKNOWN:
+ return true;
+ case NODEREF:
+ case DEREF:
+ return mReg == other.mReg && mOffset == other.mOffset;
+ case PFXEXPR:
+ return mOffset == other.mOffset;
+ default:
+ MOZ_RELEASE_ASSERT(0, "LExpr::equals: invalid how");
+ }
+ }
+
+ // Change the offset for an expression that references memory.
+ LExpr add_delta(long delta) {
+ MOZ_ASSERT(mHow == NODEREF);
+ // If this is a non-debug build and the above assertion would have
+ // failed, at least return LExpr() so that the machinery that uses
+ // the resulting expression fails in a repeatable way.
+ return (mHow == NODEREF) ? LExpr(mHow, mReg, mOffset + delta)
+ : LExpr(); // Gone bad
+ }
+
+ // Dereference an expression that denotes a memory address.
+ LExpr deref() {
+ MOZ_ASSERT(mHow == NODEREF);
+ // Same rationale as for add_delta().
+ return (mHow == NODEREF) ? LExpr(DEREF, mReg, mOffset)
+ : LExpr(); // Gone bad
+ }
+
+ // Print a rule for recovery of |aNewReg| whose recovered value
+ // is this LExpr.
+ std::string ShowRule(const char* aNewReg) const;
+
+ // Evaluate this expression, producing a TaggedUWord. |aOldRegs|
+ // holds register values that may be referred to by the expression.
+ // |aCFA| holds the CFA value, if any, that applies. |aStackImg|
+ // contains a chuck of stack that will be consulted if the expression
+ // references memory. |aPfxInstrs| holds the vector of PfxInstrs
+ // that will be consulted if this is a PFXEXPR.
+ // RUNS IN NO-MALLOC CONTEXT
+ TaggedUWord EvaluateExpr(const UnwindRegs* aOldRegs, TaggedUWord aCFA,
+ const StackImage* aStackImg,
+ const vector<PfxInstr>* aPfxInstrs) const;
+
+ // Representation of expressions. If |mReg| is DW_REG_CFA (-1) then
+ // it denotes the CFA. All other allowed values for |mReg| are
+ // nonnegative and are DW_REG_ values.
+ LExprHow mHow : 8;
+ int16_t mReg; // A DW_REG_ value
+ int32_t mOffset; // 32-bit signed offset should be more than enough.
+};
+
+static_assert(sizeof(LExpr) <= 8, "LExpr size changed unexpectedly");
+
+////////////////////////////////////////////////////////////////
+// RuleSet //
+////////////////////////////////////////////////////////////////
+
+// This is platform-dependent. It describes how to recover the CFA and then
+// how to recover the registers for the previous frame. Such "recipes" are
+// specific to particular ranges of machine code, but the associated range
+// is not stored in RuleSet, because in general each RuleSet may be used
+// for many such range fragments ("extents"). See the comments below for
+// Extent and SecMap.
+//
+// The set of LExprs contained in a given RuleSet describe a DAG which
+// says how to compute the caller's registers ("new registers") from
+// the callee's registers ("old registers"). The DAG can contain a
+// single internal node, which is the value of the CFA for the callee.
+// It would be possible to construct a DAG that omits the CFA, but
+// including it makes the summarisers simpler, and the Dwarf CFI spec
+// has the CFA as a central concept.
+//
+// For this to make sense, |mCfaExpr| can't have
+// |mReg| == DW_REG_CFA since we have no previous value for the CFA.
+// All of the other |Expr| fields can -- and usually do -- specify
+// |mReg| == DW_REG_CFA.
+//
+// With that in place, the unwind algorithm proceeds as follows.
+//
+// (0) Initially: we have values for the old registers, and a memory
+// image.
+//
+// (1) Compute the CFA by evaluating |mCfaExpr|. Add the computed
+// value to the set of "old registers".
+//
+// (2) Compute values for the registers by evaluating all of the other
+// |Expr| fields in the RuleSet. These can depend on both the old
+// register values and the just-computed CFA.
+//
+// If we are unwinding without computing a CFA, perhaps because the
+// RuleSets are derived from EXIDX instead of Dwarf, then
+// |mCfaExpr.mHow| will be LExpr::UNKNOWN, so the computed value will
+// be invalid -- that is, TaggedUWord() -- and so any attempt to use
+// that will result in the same value. But that's OK because the
+// RuleSet would make no sense if depended on the CFA but specified no
+// way to compute it.
+//
+// A RuleSet is not allowed to cover zero address range. Having zero
+// length would break binary searching in SecMaps and PriMaps.
+
+class RuleSet {
+ public:
+ RuleSet();
+ void Print(uintptr_t avma, uintptr_t len, void (*aLog)(const char*)) const;
+
+ // Find the LExpr* for a given DW_REG_ value in this class.
+ LExpr* ExprForRegno(DW_REG_NUMBER aRegno);
+
+ // How to compute the CFA.
+ LExpr mCfaExpr;
+ // How to compute caller register values. These may reference the
+ // value defined by |mCfaExpr|.
+#if defined(GP_ARCH_amd64) || defined(GP_ARCH_x86)
+ LExpr mXipExpr; // return address
+ LExpr mXspExpr;
+ LExpr mXbpExpr;
+#elif defined(GP_ARCH_arm)
+ LExpr mR15expr; // return address
+ LExpr mR14expr;
+ LExpr mR13expr;
+ LExpr mR12expr;
+ LExpr mR11expr;
+ LExpr mR7expr;
+#elif defined(GP_ARCH_arm64)
+ LExpr mX29expr; // frame pointer register
+ LExpr mX30expr; // link register
+ LExpr mSPexpr;
+#elif defined(GP_ARCH_mips64)
+ LExpr mPCexpr;
+ LExpr mFPexpr;
+ LExpr mSPexpr;
+#else
+# error "Unknown arch"
+#endif
+
+ // Machinery in support of hashing.
+ typedef RuleSet Lookup;
+
+ static mozilla::HashNumber hash(RuleSet rs) {
+ mozilla::HashNumber h = rs.mCfaExpr.hash();
+#if defined(GP_ARCH_amd64) || defined(GP_ARCH_x86)
+ h = mozilla::AddToHash(h, rs.mXipExpr.hash());
+ h = mozilla::AddToHash(h, rs.mXspExpr.hash());
+ h = mozilla::AddToHash(h, rs.mXbpExpr.hash());
+#elif defined(GP_ARCH_arm)
+ h = mozilla::AddToHash(h, rs.mR15expr.hash());
+ h = mozilla::AddToHash(h, rs.mR14expr.hash());
+ h = mozilla::AddToHash(h, rs.mR13expr.hash());
+ h = mozilla::AddToHash(h, rs.mR12expr.hash());
+ h = mozilla::AddToHash(h, rs.mR11expr.hash());
+ h = mozilla::AddToHash(h, rs.mR7expr.hash());
+#elif defined(GP_ARCH_arm64)
+ h = mozilla::AddToHash(h, rs.mX29expr.hash());
+ h = mozilla::AddToHash(h, rs.mX30expr.hash());
+ h = mozilla::AddToHash(h, rs.mSPexpr.hash());
+#elif defined(GP_ARCH_mips64)
+ h = mozilla::AddToHash(h, rs.mPCexpr.hash());
+ h = mozilla::AddToHash(h, rs.mFPexpr.hash());
+ h = mozilla::AddToHash(h, rs.mSPexpr.hash());
+#else
+# error "Unknown arch"
+#endif
+ return h;
+ }
+
+ static bool match(const RuleSet& rs1, const RuleSet& rs2) {
+ return rs1.mCfaExpr.equals(rs2.mCfaExpr) &&
+#if defined(GP_ARCH_amd64) || defined(GP_ARCH_x86)
+ rs1.mXipExpr.equals(rs2.mXipExpr) &&
+ rs1.mXspExpr.equals(rs2.mXspExpr) &&
+ rs1.mXbpExpr.equals(rs2.mXbpExpr);
+#elif defined(GP_ARCH_arm)
+ rs1.mR15expr.equals(rs2.mR15expr) &&
+ rs1.mR14expr.equals(rs2.mR14expr) &&
+ rs1.mR13expr.equals(rs2.mR13expr) &&
+ rs1.mR12expr.equals(rs2.mR12expr) &&
+ rs1.mR11expr.equals(rs2.mR11expr) && rs1.mR7expr.equals(rs2.mR7expr);
+#elif defined(GP_ARCH_arm64)
+ rs1.mX29expr.equals(rs2.mX29expr) &&
+ rs1.mX30expr.equals(rs2.mX30expr) && rs1.mSPexpr.equals(rs2.mSPexpr);
+#elif defined(GP_ARCH_mips64)
+ rs1.mPCexpr.equals(rs2.mPCexpr) && rs1.mFPexpr.equals(rs2.mFPexpr) &&
+ rs1.mSPexpr.equals(rs2.mSPexpr);
+#else
+# error "Unknown arch"
+#endif
+ }
+};
+
+// Returns |true| for Dwarf register numbers which are members
+// of the set of registers that LUL unwinds on this target.
+static inline bool registerIsTracked(DW_REG_NUMBER reg) {
+ switch (reg) {
+#if defined(GP_ARCH_amd64) || defined(GP_ARCH_x86)
+ case DW_REG_INTEL_XBP:
+ case DW_REG_INTEL_XSP:
+ case DW_REG_INTEL_XIP:
+ return true;
+#elif defined(GP_ARCH_arm)
+ case DW_REG_ARM_R7:
+ case DW_REG_ARM_R11:
+ case DW_REG_ARM_R12:
+ case DW_REG_ARM_R13:
+ case DW_REG_ARM_R14:
+ case DW_REG_ARM_R15:
+ return true;
+#elif defined(GP_ARCH_arm64)
+ case DW_REG_AARCH64_X29:
+ case DW_REG_AARCH64_X30:
+ case DW_REG_AARCH64_SP:
+ return true;
+#elif defined(GP_ARCH_mips64)
+ case DW_REG_MIPS_FP:
+ case DW_REG_MIPS_SP:
+ case DW_REG_MIPS_PC:
+ return true;
+#else
+# error "Unknown arch"
+#endif
+ default:
+ return false;
+ }
+}
+
+////////////////////////////////////////////////////////////////
+// Extent //
+////////////////////////////////////////////////////////////////
+
+struct Extent {
+ // Three fields, which together take 8 bytes.
+ uint32_t mOffset;
+ uint16_t mLen;
+ uint16_t mDictIx;
+
+ // What this means is: suppose we are looking for the unwind rules for some
+ // code address (AVMA) `avma`. If we can find some SecMap `secmap` such
+ // that `avma` falls in the range
+ //
+ // `[secmap.mMapMinAVMA, secmap.mMapMaxAVMA]`
+ //
+ // then the RuleSet to use is `secmap.mDictionary[dictIx]` iff we can find
+ // an `extent` in `secmap.mExtents` such that `avma` falls into the range
+ //
+ // `[secmap.mMapMinAVMA + extent.offset(),
+ // secmap.mMapMinAVMA + extent.offset() + extent.len())`.
+ //
+ // Packing Extent into the minimum space is important, since there will be
+ // huge numbers of Extents -- around 3 million for libxul.so as of Sept
+ // 2020. Here, we aim for an 8-byte size, with the field sizes chosen
+ // carefully, as follows:
+ //
+ // `offset` denotes a byte offset inside the text section for some shared
+ // object. libxul.so is by far the largest. As of Sept 2020 it has a text
+ // size of up to around 120MB, that is, close to 2^27 bytes. Hence a 32-bit
+ // `offset` field gives a safety margin of around a factor of 32
+ // (== 2 ^(32 - 27)).
+ //
+ // `dictIx` indicates a unique `RuleSet` for some code address range.
+ // Experimentation on x86_64-linux indicates that only around 300 different
+ // `RuleSet`s exist, for libxul.so. A 16-bit bit field allows up to 65536
+ // to be recorded, hence leaving us a generous safety margin.
+ //
+ // `len` indicates the length of the associated address range.
+ //
+ // Note the representation becomes unusable if either `offset` overflows 32
+ // bits or `dictIx` overflows 16 bits. On the other hand, it does not
+ // matter (although is undesirable) if `len` overflows 16 bits, because in
+ // that case we can add multiple size-65535 entries to `secmap.mExtents` to
+ // cover the entire range. Hence the field sizes are biased so as to give a
+ // good safety margin for `offset` and `dictIx` at the cost of stealing bits
+ // from `len`. Almost all `len` values we will ever see in practice are
+ // 65535 or less, so stealing those bits does not matter much.
+ //
+ // If further compression is required, it would be feasible to implement
+ // Extent using 29 bits for the offset, 8 bits for the length and 11 bits
+ // for the dictionary index, giving a total of 6 bytes, provided that the
+ // data is packed into 3 uint16_t's. That would be a bit slower, though,
+ // due to the bit packing, and it would be more fragile, in the sense that
+ // it would fail for any object with more than 512MB of text segment, or
+ // with more than 2048 different `RuleSet`s. For the current (Sept 2020)
+ // libxul.so situation, though, it would work fine.
+
+ Extent(uint32_t offset, uint32_t len, uint32_t dictIx) {
+ MOZ_RELEASE_ASSERT(len < (1 << 16));
+ MOZ_RELEASE_ASSERT(dictIx < (1 << 16));
+ mOffset = offset;
+ mLen = len;
+ mDictIx = dictIx;
+ }
+ inline uint32_t offset() const { return mOffset; }
+ inline uint32_t len() const { return mLen; }
+ inline uint32_t dictIx() const { return mDictIx; }
+ void setLen(uint32_t len) {
+ MOZ_RELEASE_ASSERT(len < (1 << 16));
+ mLen = len;
+ }
+ void Print(void (*aLog)(const char*)) const {
+ char buf[64];
+ SprintfLiteral(buf, "Extent(offs=0x%x, len=%u, dictIx=%u)", this->offset(),
+ this->len(), this->dictIx());
+ aLog(buf);
+ }
+};
+
+static_assert(sizeof(Extent) == 8);
+
+////////////////////////////////////////////////////////////////
+// SecMap //
+////////////////////////////////////////////////////////////////
+
+// A SecMap may have zero address range, temporarily, whilst RuleSets
+// are being added to it. But adding a zero-range SecMap to a PriMap
+// will make it impossible to maintain the total order of the PriMap
+// entries, and so that can't be allowed to happen.
+
+class SecMap {
+ public:
+ // In the constructor, `mapStartAVMA` and `mapLen` define the actual
+ // (in-process) virtual addresses covered by the SecMap. All RuleSets
+ // subsequently added to it by calling `AddRuleSet` must fall into this
+ // address range, and attempts to add ones outside the range will be
+ // ignored. This restriction exists because the type Extent (see below)
+ // indicates an address range for a RuleSet, but for reasons of compactness,
+ // it does not contain the start address of the range. Instead, it contains
+ // a 32-bit offset from the base address of the SecMap. This is also the
+ // reason why the map's size is a `uint32_t` and not a `uintptr_t`.
+ //
+ // The effect is to limit this mechanism to shared objects / executables
+ // whose text section size does not exceed 4GB (2^32 bytes). Given that, as
+ // of Sept 2020, libxul.so's text section size is around 120MB, this does
+ // not seem like much of a limitation.
+ //
+ // From the supplied `mapStartAVMA` and `mapLen`, fields `mMapMinAVMA` and
+ // `mMapMaxAVMA` are calculated. It is intended that no two SecMaps owned
+ // by the same PriMap contain overlapping address ranges, and the PriMap
+ // logic enforces that.
+ //
+ // Some invariants:
+ //
+ // mExtents is nonempty
+ // <=> mMapMinAVMA <= mMapMaxAVMA
+ // && mMapMinAVMA <= apply_delta(mExtents[0].offset())
+ // && apply_delta(mExtents[#rulesets-1].offset()
+ // + mExtents[#rulesets-1].len() - 1) <= mMapMaxAVMA
+ // where
+ // apply_delta(off) = off + mMapMinAVMA
+ //
+ // This requires that no RuleSet has zero length.
+ //
+ // mExtents is empty
+ // <=> mMapMinAVMA > mMapMaxAVMA
+ //
+ // This doesn't constrain mMapMinAVMA and mMapMaxAVMA uniquely, so let's use
+ // mMapMinAVMA == 1 and mMapMaxAVMA == 0 to denote this case.
+
+ SecMap(uintptr_t mapStartAVMA, uint32_t mapLen, void (*aLog)(const char*));
+ ~SecMap();
+
+ // Binary search mRuleSets to find one that brackets |ia|, or nullptr
+ // if none is found. It's not allowable to do this until PrepareRuleSets
+ // has been called first.
+ RuleSet* FindRuleSet(uintptr_t ia);
+
+ // Add a RuleSet to the collection. The rule is copied in. Calling
+ // this makes the map non-searchable.
+ void AddRuleSet(const RuleSet* rs, uintptr_t avma, uintptr_t len);
+
+ // Add a PfxInstr to the vector of such instrs, and return the index
+ // in the vector. Calling this makes the map non-searchable.
+ uint32_t AddPfxInstr(PfxInstr pfxi);
+
+ // Returns the entire vector of PfxInstrs.
+ const vector<PfxInstr>* GetPfxInstrs() { return &mPfxInstrs; }
+
+ // Prepare the map for searching, by sorting it, de-overlapping entries and
+ // removing any resulting zero-length entries. At the start of this
+ // routine, all Extents should fall within [mMapMinAVMA, mMapMaxAVMA] and
+ // not have zero length, as a result of the checks in AddRuleSet().
+ void PrepareRuleSets();
+
+ bool IsEmpty();
+
+ size_t Size() { return mExtents.size() + mDictionary.size(); }
+
+ size_t SizeOfIncludingThis(mozilla::MallocSizeOf aMallocSizeOf) const;
+
+ // The extent of this SecMap as a whole. The extents of all contained
+ // RuleSets must fall inside this. See comment above for details.
+ uintptr_t mMapMinAVMA;
+ uintptr_t mMapMaxAVMA;
+
+ private:
+ // False whilst adding entries; true once it is safe to call FindRuleSet.
+ // Transition (false->true) is caused by calling PrepareRuleSets().
+ bool mUsable;
+
+ // This is used to find and remove duplicate RuleSets while we are adding
+ // them to the SecMap. Almost all RuleSets are duplicates, so de-duping
+ // them is a huge space win. This is non-null while `mUsable` is false, and
+ // becomes null (is discarded) after the call to PrepareRuleSets, which
+ // copies all the entries into `mDictionary`.
+ mozilla::UniquePtr<
+ mozilla::HashMap<RuleSet, uint32_t, RuleSet, InfallibleAllocPolicy>>
+ mUniqifier;
+
+ // This will contain final contents of `mUniqifier`, but ordered
+ // (implicitly) by the `uint32_t` value fields, for fast access.
+ vector<RuleSet> mDictionary;
+
+ // A vector of Extents, sorted by offset value, nonoverlapping (post
+ // PrepareRuleSets()).
+ vector<Extent> mExtents;
+
+ // A vector of PfxInstrs, which are referred to by the RuleSets.
+ // These are provided as a representation of Dwarf expressions
+ // (DW_CFA_val_expression, DW_CFA_expression, DW_CFA_def_cfa_expression),
+ // are relatively expensive to evaluate, and and are therefore
+ // expected to be used only occasionally.
+ //
+ // The vector holds a bunch of separate PfxInstr programs, each one
+ // starting with a PX_Start and terminated by a PX_End, all
+ // concatenated together. When a RuleSet can't recover a value
+ // using a self-contained LExpr, it uses a PFXEXPR whose mOffset is
+ // the index in this vector of start of the necessary PfxInstr program.
+ vector<PfxInstr> mPfxInstrs;
+
+ // A logging sink, for debugging.
+ void (*mLog)(const char*);
+};
+
+} // namespace lul
+
+#endif // ndef LulMainInt_h
diff --git a/tools/profiler/lul/platform-linux-lul.cpp b/tools/profiler/lul/platform-linux-lul.cpp
new file mode 100644
index 0000000000..4027905c60
--- /dev/null
+++ b/tools/profiler/lul/platform-linux-lul.cpp
@@ -0,0 +1,75 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include <stdio.h>
+#include <signal.h>
+#include <string.h>
+#include <stdlib.h>
+#include <time.h>
+
+#include "mozilla/ProfilerState.h"
+#include "platform.h"
+#include "PlatformMacros.h"
+#include "LulMain.h"
+#include "shared-libraries.h"
+#include "AutoObjectMapper.h"
+
+// Contains miscellaneous helpers that are used to connect the Gecko Profiler
+// and LUL.
+
+// Find out, in a platform-dependent way, where the code modules got
+// mapped in the process' virtual address space, and get |aLUL| to
+// load unwind info for them.
+void read_procmaps(lul::LUL* aLUL) {
+ MOZ_ASSERT(aLUL->CountMappings() == 0);
+
+#if defined(GP_OS_linux) || defined(GP_OS_android) || defined(GP_OS_freebsd)
+ SharedLibraryInfo info = SharedLibraryInfo::GetInfoForSelf();
+
+ for (size_t i = 0; i < info.GetSize(); i++) {
+ const SharedLibrary& lib = info.GetEntry(i);
+
+ std::string nativePath = lib.GetNativeDebugPath();
+
+ // We can use the standard POSIX-based mapper.
+ AutoObjectMapperPOSIX mapper(aLUL->mLog);
+
+ // Ask |mapper| to map the object. Then hand its mapped address
+ // to NotifyAfterMap().
+ void* image = nullptr;
+ size_t size = 0;
+ bool ok = mapper.Map(&image, &size, nativePath);
+ if (ok && image && size > 0) {
+ aLUL->NotifyAfterMap(lib.GetStart(), lib.GetEnd() - lib.GetStart(),
+ nativePath.c_str(), image);
+ } else if (!ok && lib.GetDebugName().IsEmpty()) {
+ // The object has no name and (as a consequence) the mapper failed to map
+ // it. This happens on Linux, where GetInfoForSelf() produces such a
+ // mapping for the VDSO. This is a problem on x86-{linux,android} because
+ // lack of knowledge about the mapped area inhibits LUL's special
+ // __kernel_syscall handling. Hence notify |aLUL| at least of the
+ // mapping, even though it can't read any unwind information for the area.
+ aLUL->NotifyExecutableArea(lib.GetStart(), lib.GetEnd() - lib.GetStart());
+ }
+
+ // |mapper| goes out of scope at this point and so its destructor
+ // unmaps the object.
+ }
+
+#else
+# error "Unknown platform"
+#endif
+}
+
+// LUL needs a callback for its logging sink.
+void logging_sink_for_LUL(const char* str) {
+ // These are only printed when Verbose logging is enabled (e.g. with
+ // MOZ_LOG="prof:5"). This is because LUL's logging is much more verbose than
+ // the rest of the profiler's logging, which occurs at the Info (3) and Debug
+ // (4) levels.
+ MOZ_LOG(gProfilerLog, mozilla::LogLevel::Verbose,
+ ("[%" PRIu64 "] %s",
+ uint64_t(profiler_current_process_id().ToNumber()), str));
+}
diff --git a/tools/profiler/lul/platform-linux-lul.h b/tools/profiler/lul/platform-linux-lul.h
new file mode 100644
index 0000000000..7c94299961
--- /dev/null
+++ b/tools/profiler/lul/platform-linux-lul.h
@@ -0,0 +1,19 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef MOZ_PLATFORM_LINUX_LUL_H
+#define MOZ_PLATFORM_LINUX_LUL_H
+
+#include "platform.h"
+
+// Find out, in a platform-dependent way, where the code modules got
+// mapped in the process' virtual address space, and get |aLUL| to
+// load unwind info for them.
+void read_procmaps(lul::LUL* aLUL);
+
+// LUL needs a callback for its logging sink.
+void logging_sink_for_LUL(const char* str);
+
+#endif /* ndef MOZ_PLATFORM_LINUX_LUL_H */
diff --git a/tools/profiler/moz.build b/tools/profiler/moz.build
new file mode 100644
index 0000000000..8b185195f8
--- /dev/null
+++ b/tools/profiler/moz.build
@@ -0,0 +1,227 @@
+# -*- Mode: python; indent-tabs-mode: nil; tab-width: 40 -*-
+# vim: set filetype=python:
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+if CONFIG["MOZ_GECKO_PROFILER"]:
+ DEFINES["MOZ_REPLACE_MALLOC_PREFIX"] = "profiler"
+ XPIDL_MODULE = "profiler"
+ XPIDL_SOURCES += [
+ "gecko/nsIProfiler.idl",
+ ]
+ EXPORTS += [
+ "public/GeckoProfilerReporter.h",
+ "public/ProfilerChild.h",
+ "public/ProfilerCodeAddressService.h",
+ "public/shared-libraries.h",
+ ]
+ UNIFIED_SOURCES += [
+ "core/PageInformation.cpp",
+ "core/platform.cpp",
+ "core/ProfileBuffer.cpp",
+ "core/ProfileBufferEntry.cpp",
+ "core/ProfiledThreadData.cpp",
+ "core/ProfilerBacktrace.cpp",
+ "core/ProfilerCodeAddressService.cpp",
+ "core/ProfilerMarkers.cpp",
+ "gecko/ChildProfilerController.cpp",
+ "gecko/nsProfilerStartParams.cpp",
+ "gecko/ProfilerChild.cpp",
+ "gecko/ProfilerIOInterposeObserver.cpp",
+ ]
+ if CONFIG["MOZ_REPLACE_MALLOC"] and CONFIG["MOZ_PROFILER_MEMORY"]:
+ SOURCES += [
+ "core/memory_hooks.cpp", # Non-unified because of order of #includes
+ ]
+
+ XPCOM_MANIFESTS += [
+ "gecko/components.conf",
+ ]
+
+ if CONFIG["OS_TARGET"] == "Darwin":
+ # This file cannot be built in unified mode because it includes
+ # "nsLocalFile.h", which pulls in a system header which uses a type
+ # called TextRange, which conflicts with mozilla::TextRange due to
+ # a "using namespace mozilla;" declaration from a different file.
+ SOURCES += [
+ "gecko/nsProfiler.cpp",
+ ]
+ else:
+ UNIFIED_SOURCES += [
+ "gecko/nsProfiler.cpp",
+ ]
+
+ if CONFIG["OS_TARGET"] in ("Android", "Linux", "FreeBSD"):
+ if CONFIG["CPU_ARCH"] in ("arm", "aarch64", "x86", "x86_64", "mips64"):
+ UNIFIED_SOURCES += [
+ "lul/AutoObjectMapper.cpp",
+ "lul/LulCommon.cpp",
+ "lul/LulDwarf.cpp",
+ "lul/LulDwarfSummariser.cpp",
+ "lul/LulElf.cpp",
+ "lul/LulMain.cpp",
+ "lul/platform-linux-lul.cpp",
+ ]
+ # These files cannot be built in unified mode because of name clashes with mozglue headers on Android.
+ SOURCES += [
+ "core/shared-libraries-linux.cc",
+ ]
+ if not CONFIG["MOZ_CRASHREPORTER"]:
+ SOURCES += [
+ "/toolkit/crashreporter/google-breakpad/src/common/linux/elfutils.cc",
+ "/toolkit/crashreporter/google-breakpad/src/common/linux/file_id.cc",
+ "/toolkit/crashreporter/google-breakpad/src/common/linux/linux_libc_support.cc",
+ "/toolkit/crashreporter/google-breakpad/src/common/linux/memory_mapped_file.cc",
+ ]
+ if not CONFIG["HAVE_GETCONTEXT"]:
+ SOURCES += [
+ "/toolkit/crashreporter/google-breakpad/src/common/linux/breakpad_getcontext.S"
+ ]
+ if CONFIG["CPU_ARCH"] == "x86_64" and CONFIG["OS_TARGET"] == "Linux":
+ UNIFIED_SOURCES += [
+ "core/PowerCounters-linux.cpp",
+ ]
+ if CONFIG["CPU_ARCH"] == "arm" and CONFIG["OS_TARGET"] != "FreeBSD":
+ SOURCES += [
+ "core/EHABIStackWalk.cpp",
+ ]
+ elif CONFIG["OS_TARGET"] == "Darwin":
+ UNIFIED_SOURCES += [
+ "core/shared-libraries-macos.cc",
+ ]
+ if CONFIG["CPU_ARCH"] == "aarch64":
+ UNIFIED_SOURCES += [
+ "core/PowerCounters-mac-arm64.cpp",
+ ]
+ if CONFIG["CPU_ARCH"] == "x86_64":
+ UNIFIED_SOURCES += [
+ "core/PowerCounters-mac-amd64.cpp",
+ ]
+ elif CONFIG["OS_TARGET"] == "WINNT":
+ if CONFIG["CC_TYPE"] == "clang-cl":
+ UNIFIED_SOURCES += [
+ "core/PowerCounters-win.cpp",
+ ]
+ SOURCES += [
+ "core/shared-libraries-win32.cc",
+ ]
+
+ LOCAL_INCLUDES += [
+ "/caps",
+ "/docshell/base",
+ "/ipc/chromium/src",
+ "/mozglue/linker",
+ "/netwerk/base",
+ "/netwerk/protocol/http",
+ "/toolkit/components/jsoncpp/include",
+ "/toolkit/crashreporter/google-breakpad/src",
+ "/tools/profiler/core/",
+ "/tools/profiler/gecko/",
+ "/xpcom/base",
+ ]
+
+ if CONFIG["OS_TARGET"] == "Android":
+ DEFINES["ANDROID_NDK_MAJOR_VERSION"] = CONFIG["ANDROID_NDK_MAJOR_VERSION"]
+ DEFINES["ANDROID_NDK_MINOR_VERSION"] = CONFIG["ANDROID_NDK_MINOR_VERSION"]
+ LOCAL_INCLUDES += [
+ # We need access to Breakpad's getcontext(3) which is suitable for Android
+ "/toolkit/crashreporter/google-breakpad/src/common/android/include",
+ ]
+
+ if CONFIG["MOZ_VTUNE"]:
+ DEFINES["MOZ_VTUNE_INSTRUMENTATION"] = True
+ UNIFIED_SOURCES += [
+ "core/VTuneProfiler.cpp",
+ ]
+
+ XPCSHELL_TESTS_MANIFESTS += ["tests/xpcshell/xpcshell.ini"]
+ MOCHITEST_CHROME_MANIFESTS += ["tests/chrome/chrome.ini"]
+ BROWSER_CHROME_MANIFESTS += ["tests/browser/browser.ini"]
+
+UNIFIED_SOURCES += [
+ "core/MicroGeckoProfiler.cpp",
+ "core/ProfileAdditionalInformation.cpp",
+ "core/ProfilerBindings.cpp",
+ "core/ProfilerThreadRegistration.cpp",
+ "core/ProfilerThreadRegistrationData.cpp",
+ "core/ProfilerThreadRegistry.cpp",
+ "core/ProfilerUtils.cpp",
+ "gecko/ProfilerParent.cpp",
+]
+
+IPDL_SOURCES += [
+ "gecko/PProfiler.ipdl",
+ "gecko/ProfilerTypes.ipdlh",
+]
+
+include("/ipc/chromium/chromium-config.mozbuild")
+
+EXPORTS += [
+ "public/ChildProfilerController.h",
+ "public/GeckoProfiler.h",
+ "public/MicroGeckoProfiler.h",
+ "public/ProfileAdditionalInformation.h",
+ "public/ProfilerBindings.h",
+ "public/ProfilerControl.h",
+ "public/ProfilerParent.h",
+ "public/ProfilerRustBindings.h",
+]
+
+EXPORTS.mozilla += [
+ "public/ProfileBufferEntrySerializationGeckoExtensions.h",
+ "public/ProfileJSONWriter.h",
+ "public/ProfilerCounts.h",
+ "public/ProfilerLabels.h",
+ "public/ProfilerMarkers.h",
+ "public/ProfilerMarkersDetail.h",
+ "public/ProfilerMarkersPrerequisites.h",
+ "public/ProfilerMarkerTypes.h",
+ "public/ProfilerRunnable.h",
+ "public/ProfilerState.h",
+ "public/ProfilerThreadPlatformData.h",
+ "public/ProfilerThreadRegistration.h",
+ "public/ProfilerThreadRegistrationData.h",
+ "public/ProfilerThreadRegistrationInfo.h",
+ "public/ProfilerThreadRegistry.h",
+ "public/ProfilerThreadSleep.h",
+ "public/ProfilerThreadState.h",
+ "public/ProfilerUtils.h",
+]
+
+GeneratedFile(
+ "rust-api/src/gecko_bindings/profiling_categories.rs",
+ script="../../mozglue/baseprofiler/build/generate_profiling_categories.py",
+ entry_point="generate_rust_enums",
+ inputs=["../../mozglue/baseprofiler/build/profiling_categories.yaml"],
+)
+
+CONFIGURE_SUBST_FILES += [
+ "rust-api/extra-bindgen-flags",
+]
+
+
+if CONFIG["COMPILE_ENVIRONMENT"]:
+ CbindgenHeader("profiler_ffi_generated.h", inputs=["rust-api"])
+
+ EXPORTS.mozilla += [
+ "!profiler_ffi_generated.h",
+ ]
+
+USE_LIBS += [
+ "jsoncpp",
+]
+
+FINAL_LIBRARY = "xul"
+
+if CONFIG["ENABLE_TESTS"]:
+ DIRS += ["tests/gtest"]
+
+if CONFIG["CC_TYPE"] in ("clang", "gcc"):
+ CXXFLAGS += [
+ "-Wno-error=stack-protector",
+ "-Wno-ignored-qualifiers", # due to use of breakpad headers
+ ]
+
+with Files("**"):
+ BUG_COMPONENT = ("Core", "Gecko Profiler")
diff --git a/tools/profiler/public/ChildProfilerController.h b/tools/profiler/public/ChildProfilerController.h
new file mode 100644
index 0000000000..8febc25b65
--- /dev/null
+++ b/tools/profiler/public/ChildProfilerController.h
@@ -0,0 +1,71 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef ChildProfilerController_h
+#define ChildProfilerController_h
+
+#include "base/process.h"
+#include "mozilla/Attributes.h"
+#include "mozilla/ipc/ProtocolUtils.h"
+#include "mozilla/DataMutex.h"
+#include "mozilla/RefPtr.h"
+#include "nsISupportsImpl.h"
+#include "nsStringFwd.h"
+#include "ProfileAdditionalInformation.h"
+
+namespace mozilla {
+
+class ProfilerChild;
+class PProfilerChild;
+class PProfilerParent;
+
+// ChildProfilerController manages the setup and teardown of ProfilerChild.
+// It's used on the main thread.
+// It manages a background thread that ProfilerChild runs on.
+class ChildProfilerController final {
+ public:
+ NS_INLINE_DECL_THREADSAFE_REFCOUNTING(ChildProfilerController)
+
+#ifdef MOZ_GECKO_PROFILER
+ static already_AddRefed<ChildProfilerController> Create(
+ mozilla::ipc::Endpoint<PProfilerChild>&& aEndpoint);
+
+ [[nodiscard]] ProfileAndAdditionalInformation
+ GrabShutdownProfileAndShutdown();
+ void Shutdown();
+
+ private:
+ ChildProfilerController();
+ ~ChildProfilerController();
+ void Init(mozilla::ipc::Endpoint<PProfilerChild>&& aEndpoint);
+ void ShutdownAndMaybeGrabShutdownProfileFirst(
+ ProfileAndAdditionalInformation* aOutShutdownProfileInformation);
+
+ // Called on mThread:
+ void SetupProfilerChild(mozilla::ipc::Endpoint<PProfilerChild>&& aEndpoint);
+ void ShutdownProfilerChild(
+ ProfileAndAdditionalInformation* aOutShutdownProfileInformation);
+
+ RefPtr<ProfilerChild> mProfilerChild; // only accessed on mThread
+ DataMutex<RefPtr<nsIThread>> mThread;
+#else
+ static already_AddRefed<ChildProfilerController> Create(
+ mozilla::ipc::Endpoint<PProfilerChild>&& aEndpoint) {
+ return nullptr;
+ }
+ [[nodiscard]] ProfileAndAdditionalInformation
+ GrabShutdownProfileAndShutdown() {
+ return ProfileAndAdditionalInformation(std::move(EmptyCString()));
+ }
+ void Shutdown() {}
+
+ private:
+ ~ChildProfilerController() {}
+#endif // MOZ_GECKO_PROFILER
+};
+
+} // namespace mozilla
+
+#endif // ChildProfilerController_h
diff --git a/tools/profiler/public/GeckoProfiler.h b/tools/profiler/public/GeckoProfiler.h
new file mode 100644
index 0000000000..f7c045297e
--- /dev/null
+++ b/tools/profiler/public/GeckoProfiler.h
@@ -0,0 +1,435 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+// The Gecko Profiler is an always-on profiler that takes fast and low overhead
+// samples of the program execution using only userspace functionality for
+// portability. The goal of this module is to provide performance data in a
+// generic cross-platform way without requiring custom tools or kernel support.
+//
+// Samples are collected to form a timeline with optional timeline event
+// (markers) used for filtering. The samples include both native stacks and
+// platform-independent "label stack" frames.
+
+#ifndef GeckoProfiler_h
+#define GeckoProfiler_h
+
+// Everything in here is also safe to include unconditionally, and only defines
+// empty macros if MOZ_GECKO_PROFILER is unset.
+// If your file only uses particular APIs (e.g., only markers), please consider
+// including only the needed headers instead of this one, to reduce compilation
+// dependencies.
+#include "BaseProfiler.h"
+#include "ProfileAdditionalInformation.h"
+#include "mozilla/ProfilerCounts.h"
+#include "mozilla/ProfilerLabels.h"
+#include "mozilla/ProfilerMarkers.h"
+#include "mozilla/ProfilerState.h"
+#include "mozilla/ProfilerThreadSleep.h"
+#include "mozilla/ProfilerThreadState.h"
+#include "mozilla/ProgressLogger.h"
+#include "mozilla/Result.h"
+#include "mozilla/ResultVariant.h"
+
+#ifndef MOZ_GECKO_PROFILER
+
+# include "mozilla/UniquePtr.h"
+
+// This file can be #included unconditionally. However, everything within this
+// file must be guarded by a #ifdef MOZ_GECKO_PROFILER, *except* for the
+// following macros and functions, which encapsulate the most common operations
+// and thus avoid the need for many #ifdefs.
+
+# define PROFILER_REGISTER_THREAD(name)
+# define PROFILER_UNREGISTER_THREAD()
+# define AUTO_PROFILER_REGISTER_THREAD(name)
+
+# define PROFILER_JS_INTERRUPT_CALLBACK()
+
+# define PROFILER_SET_JS_CONTEXT(cx)
+# define PROFILER_CLEAR_JS_CONTEXT()
+
+// Function stubs for when MOZ_GECKO_PROFILER is not defined.
+
+// This won't be used, it's just there to allow the empty definition of
+// `profiler_get_backtrace`.
+struct ProfilerBacktrace {};
+using UniqueProfilerBacktrace = mozilla::UniquePtr<ProfilerBacktrace>;
+
+// Get/Capture-backtrace functions can return nullptr or false, the result
+// should be fed to another empty macro or stub anyway.
+
+static inline UniqueProfilerBacktrace profiler_get_backtrace() {
+ return nullptr;
+}
+
+// This won't be used, it's just there to allow the empty definitions of
+// `profiler_capture_backtrace_into` and `profiler_capture_backtrace`.
+struct ProfileChunkedBuffer {};
+
+static inline bool profiler_capture_backtrace_into(
+ mozilla::ProfileChunkedBuffer& aChunkedBuffer,
+ mozilla::StackCaptureOptions aCaptureOptions) {
+ return false;
+}
+static inline mozilla::UniquePtr<mozilla::ProfileChunkedBuffer>
+profiler_capture_backtrace() {
+ return nullptr;
+}
+
+static inline void profiler_set_process_name(
+ const nsACString& aProcessName, const nsACString* aETLDplus1 = nullptr) {}
+
+static inline void profiler_received_exit_profile(
+ const nsACString& aExitProfile) {}
+
+static inline void profiler_register_page(uint64_t aTabID,
+ uint64_t aInnerWindowID,
+ const nsCString& aUrl,
+ uint64_t aEmbedderInnerWindowID,
+ bool aIsPrivateBrowsing) {}
+static inline void profiler_unregister_page(uint64_t aRegisteredInnerWindowID) {
+}
+
+static inline void GetProfilerEnvVarsForChildProcess(
+ std::function<void(const char* key, const char* value)>&& aSetEnv) {}
+
+static inline void profiler_record_wakeup_count(
+ const nsACString& aProcessType) {}
+
+#else // !MOZ_GECKO_PROFILER
+
+# include "js/ProfilingStack.h"
+# include "mozilla/Assertions.h"
+# include "mozilla/Atomics.h"
+# include "mozilla/Attributes.h"
+# include "mozilla/BaseProfilerRAIIMacro.h"
+# include "mozilla/Maybe.h"
+# include "mozilla/PowerOfTwo.h"
+# include "mozilla/ThreadLocal.h"
+# include "mozilla/TimeStamp.h"
+# include "mozilla/UniquePtr.h"
+# include "nscore.h"
+# include "nsINamed.h"
+# include "nsString.h"
+# include "nsThreadUtils.h"
+
+# include <functional>
+# include <stdint.h>
+
+class ProfilerBacktrace;
+class ProfilerCodeAddressService;
+struct JSContext;
+
+namespace mozilla {
+class ProfileBufferControlledChunkManager;
+class ProfileChunkedBuffer;
+namespace baseprofiler {
+class SpliceableJSONWriter;
+} // namespace baseprofiler
+} // namespace mozilla
+class nsIURI;
+
+enum class ProfilerError {
+ IsInactive,
+ JsonGenerationFailed,
+};
+
+template <typename T>
+using ProfilerResult = mozilla::Result<T, ProfilerError>;
+
+//---------------------------------------------------------------------------
+// Give information to the profiler
+//---------------------------------------------------------------------------
+
+// Register/unregister threads with the profiler. Both functions operate the
+// same whether the profiler is active or inactive.
+# define PROFILER_REGISTER_THREAD(name) \
+ do { \
+ char stackTop; \
+ profiler_register_thread(name, &stackTop); \
+ } while (0)
+# define PROFILER_UNREGISTER_THREAD() profiler_unregister_thread()
+ProfilingStack* profiler_register_thread(const char* name, void* guessStackTop);
+void profiler_unregister_thread();
+
+// Registers a DOM Window (the JS global `window`) with the profiler. Each
+// Window _roughly_ corresponds to a single document loaded within a
+// browsing context. Both the Window Id and Browser Id are recorded to allow
+// correlating different Windows loaded within the same tab or frame element.
+//
+// We register pages for each navigations but we do not register
+// history.pushState or history.replaceState since they correspond to the same
+// Inner Window ID. When a browsing context is first loaded, the first url
+// loaded in it will be about:blank. Because of that, this call keeps the first
+// non-about:blank registration of window and discards the previous one.
+//
+// "aTabID" is the BrowserId of that document belongs to.
+// That's used to determine the tab of that page.
+// "aInnerWindowID" is the ID of the `window` global object of that
+// document.
+// "aUrl" is the URL of the page.
+// "aEmbedderInnerWindowID" is the inner window id of embedder. It's used to
+// determine sub documents of a page.
+// "aIsPrivateBrowsing" is true if this browsing context happens in a
+// private browsing context.
+void profiler_register_page(uint64_t aTabID, uint64_t aInnerWindowID,
+ const nsCString& aUrl,
+ uint64_t aEmbedderInnerWindowID,
+ bool aIsPrivateBrowsing);
+// Unregister page with the profiler.
+//
+// Take a Inner Window ID and unregister the page entry that has the same ID.
+void profiler_unregister_page(uint64_t aRegisteredInnerWindowID);
+
+// Remove all registered and unregistered pages in the profiler.
+void profiler_clear_all_pages();
+
+class BaseProfilerCount;
+void profiler_add_sampled_counter(BaseProfilerCount* aCounter);
+void profiler_remove_sampled_counter(BaseProfilerCount* aCounter);
+
+// Register and unregister a thread within a scope.
+# define AUTO_PROFILER_REGISTER_THREAD(name) \
+ mozilla::AutoProfilerRegisterThread PROFILER_RAII(name)
+
+enum class SamplingState {
+ JustStopped, // Sampling loop has just stopped without sampling, between the
+ // callback registration and now.
+ SamplingPaused, // Profiler is active but sampling loop has gone through a
+ // pause.
+ NoStackSamplingCompleted, // A full sampling loop has completed in
+ // no-stack-sampling mode.
+ SamplingCompleted // A full sampling loop has completed.
+};
+
+using PostSamplingCallback = std::function<void(SamplingState)>;
+
+// Install a callback to be invoked at the end of the next sampling loop.
+// - `false` if profiler is not active, `aCallback` will stay untouched.
+// - `true` if `aCallback` was successfully moved-from into internal storage,
+// and *will* be invoked at the end of the next sampling cycle. Note that this
+// will happen on the Sampler thread, and will block further sampling, so
+// please be mindful not to block for a long time (e.g., just dispatch a
+// runnable to another thread.) Calling profiler functions from the callback
+// is allowed.
+[[nodiscard]] bool profiler_callback_after_sampling(
+ PostSamplingCallback&& aCallback);
+
+// Called by the JSRuntime's operation callback. This is used to start profiling
+// on auxiliary threads. Operates the same whether the profiler is active or
+// not.
+# define PROFILER_JS_INTERRUPT_CALLBACK() profiler_js_interrupt_callback()
+void profiler_js_interrupt_callback();
+
+// Set and clear the current thread's JSContext.
+# define PROFILER_SET_JS_CONTEXT(cx) profiler_set_js_context(cx)
+# define PROFILER_CLEAR_JS_CONTEXT() profiler_clear_js_context()
+void profiler_set_js_context(JSContext* aCx);
+void profiler_clear_js_context();
+
+//---------------------------------------------------------------------------
+// Get information from the profiler
+//---------------------------------------------------------------------------
+
+// Get the chunk manager used in the current profiling session, or null.
+mozilla::ProfileBufferControlledChunkManager*
+profiler_get_controlled_chunk_manager();
+
+// The number of milliseconds since the process started. Operates the same
+// whether the profiler is active or inactive.
+double profiler_time();
+
+// An object of this class is passed to profiler_suspend_and_sample_thread().
+// For each stack frame, one of the Collect methods will be called.
+class ProfilerStackCollector {
+ public:
+ // Some collectors need to worry about possibly overwriting previous
+ // generations of data. If that's not an issue, this can return Nothing,
+ // which is the default behaviour.
+ virtual mozilla::Maybe<uint64_t> SamplePositionInBuffer() {
+ return mozilla::Nothing();
+ }
+ virtual mozilla::Maybe<uint64_t> BufferRangeStart() {
+ return mozilla::Nothing();
+ }
+
+ // This method will be called once if the thread being suspended is the main
+ // thread. Default behaviour is to do nothing.
+ virtual void SetIsMainThread() {}
+
+ // WARNING: The target thread is suspended when the Collect methods are
+ // called. Do not try to allocate or acquire any locks, or you could
+ // deadlock. The target thread will have resumed by the time this function
+ // returns.
+
+ virtual void CollectNativeLeafAddr(void* aAddr) = 0;
+
+ virtual void CollectJitReturnAddr(void* aAddr) = 0;
+
+ virtual void CollectWasmFrame(const char* aLabel) = 0;
+
+ virtual void CollectProfilingStackFrame(
+ const js::ProfilingStackFrame& aFrame) = 0;
+};
+
+// This method suspends the thread identified by aThreadId, samples its
+// profiling stack, JS stack, and (optionally) native stack, passing the
+// collected frames into aCollector. aFeatures dictates which compiler features
+// are used. |Leaf| is the only relevant one.
+// Use `ProfilerThreadId{}` (unspecified) to sample the current thread.
+void profiler_suspend_and_sample_thread(ProfilerThreadId aThreadId,
+ uint32_t aFeatures,
+ ProfilerStackCollector& aCollector,
+ bool aSampleNative = true);
+
+struct ProfilerBacktraceDestructor {
+ void operator()(ProfilerBacktrace*);
+};
+
+using UniqueProfilerBacktrace =
+ mozilla::UniquePtr<ProfilerBacktrace, ProfilerBacktraceDestructor>;
+
+// Immediately capture the current thread's call stack, store it in the provided
+// buffer (usually to avoid allocations if you can construct the buffer on the
+// stack). Returns false if unsuccessful, or if the profiler is inactive.
+bool profiler_capture_backtrace_into(
+ mozilla::ProfileChunkedBuffer& aChunkedBuffer,
+ mozilla::StackCaptureOptions aCaptureOptions);
+
+// Immediately capture the current thread's call stack, and return it in a
+// ProfileChunkedBuffer (usually for later use in MarkerStack::TakeBacktrace()).
+// May be null if unsuccessful, or if the profiler is inactive.
+mozilla::UniquePtr<mozilla::ProfileChunkedBuffer> profiler_capture_backtrace();
+
+// Immediately capture the current thread's call stack, and return it in a
+// ProfilerBacktrace (usually for later use in marker function that take a
+// ProfilerBacktrace). May be null if unsuccessful, or if the profiler is
+// inactive.
+UniqueProfilerBacktrace profiler_get_backtrace();
+
+struct ProfilerStats {
+ unsigned n = 0;
+ double sum = 0;
+ double min = std::numeric_limits<double>::max();
+ double max = 0;
+ void Count(double v) {
+ ++n;
+ sum += v;
+ if (v < min) {
+ min = v;
+ }
+ if (v > max) {
+ max = v;
+ }
+ }
+};
+
+struct ProfilerBufferInfo {
+ // Index of the oldest entry.
+ uint64_t mRangeStart;
+ // Index of the newest entry.
+ uint64_t mRangeEnd;
+ // Buffer capacity in number of 8-byte entries.
+ uint32_t mEntryCount;
+ // Sampling stats: Interval between successive samplings.
+ ProfilerStats mIntervalsUs;
+ // Sampling stats: Total sampling duration. (Split detail below.)
+ ProfilerStats mOverheadsUs;
+ // Sampling stats: Time to acquire the lock before sampling.
+ ProfilerStats mLockingsUs;
+ // Sampling stats: Time to discard expired data.
+ ProfilerStats mCleaningsUs;
+ // Sampling stats: Time to collect counter data.
+ ProfilerStats mCountersUs;
+ // Sampling stats: Time to sample thread stacks.
+ ProfilerStats mThreadsUs;
+};
+
+// Get information about the current buffer status.
+// Returns Nothing() if the profiler is inactive.
+//
+// This information may be useful to a user-interface displaying the current
+// status of the profiler, allowing the user to get a sense for how fast the
+// buffer is being written to, and how much data is visible.
+mozilla::Maybe<ProfilerBufferInfo> profiler_get_buffer_info();
+
+// Record through glean how many times profiler_thread_wake has been
+// called.
+void profiler_record_wakeup_count(const nsACString& aProcessType);
+
+//---------------------------------------------------------------------------
+// Output profiles
+//---------------------------------------------------------------------------
+
+// Set a user-friendly process name, used in JSON stream. Allows an optional
+// detailed name which may include private info (eTLD+1 in fission)
+void profiler_set_process_name(const nsACString& aProcessName,
+ const nsACString* aETLDplus1 = nullptr);
+
+// Record an exit profile from a child process.
+void profiler_received_exit_profile(const nsACString& aExitProfile);
+
+// Get the profile encoded as a JSON string. A no-op (returning nullptr) if the
+// profiler is inactive.
+// If aIsShuttingDown is true, the current time is included as the process
+// shutdown time in the JSON's "meta" object.
+mozilla::UniquePtr<char[]> profiler_get_profile(double aSinceTime = 0,
+ bool aIsShuttingDown = false);
+
+// Write the profile for this process (excluding subprocesses) into aWriter.
+// Returns a failed result if the profiler is inactive.
+ProfilerResult<mozilla::ProfileGenerationAdditionalInformation>
+profiler_stream_json_for_this_process(
+ mozilla::baseprofiler::SpliceableJSONWriter& aWriter, double aSinceTime = 0,
+ bool aIsShuttingDown = false,
+ ProfilerCodeAddressService* aService = nullptr,
+ mozilla::ProgressLogger aProgressLogger = {});
+
+// Get the profile and write it into a file. A no-op if the profile is
+// inactive.
+//
+// This function is 'extern "C"' so that it is easily callable from a debugger
+// in a build without debugging information (a workaround for
+// http://llvm.org/bugs/show_bug.cgi?id=22211).
+extern "C" {
+void profiler_save_profile_to_file(const char* aFilename);
+}
+
+//---------------------------------------------------------------------------
+// RAII classes
+//---------------------------------------------------------------------------
+
+namespace mozilla {
+
+// Convenience class to register and unregister a thread with the profiler.
+// Needs to be the first object on the stack of the thread.
+class MOZ_RAII AutoProfilerRegisterThread final {
+ public:
+ explicit AutoProfilerRegisterThread(const char* aName) {
+ profiler_register_thread(aName, this);
+ }
+
+ ~AutoProfilerRegisterThread() { profiler_unregister_thread(); }
+
+ private:
+ AutoProfilerRegisterThread(const AutoProfilerRegisterThread&) = delete;
+ AutoProfilerRegisterThread& operator=(const AutoProfilerRegisterThread&) =
+ delete;
+};
+
+// Get the MOZ_PROFILER_STARTUP* environment variables that should be
+// supplied to a child process that is about to be launched, in order
+// to make that child process start with the same profiler settings as
+// in the current process. The given function is invoked once for
+// each variable to be set.
+void GetProfilerEnvVarsForChildProcess(
+ std::function<void(const char* key, const char* value)>&& aSetEnv);
+
+} // namespace mozilla
+
+#endif // !MOZ_GECKO_PROFILER
+
+#endif // GeckoProfiler_h
diff --git a/tools/profiler/public/GeckoProfilerReporter.h b/tools/profiler/public/GeckoProfilerReporter.h
new file mode 100644
index 0000000000..f5bf41f223
--- /dev/null
+++ b/tools/profiler/public/GeckoProfilerReporter.h
@@ -0,0 +1,26 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef GeckoProfilerReporter_h
+#define GeckoProfilerReporter_h
+
+#include "nsIMemoryReporter.h"
+
+class GeckoProfilerReporter final : public nsIMemoryReporter {
+ public:
+ NS_DECL_ISUPPORTS
+
+ GeckoProfilerReporter() {}
+
+ NS_IMETHOD
+ CollectReports(nsIHandleReportCallback* aHandleReport, nsISupports* aData,
+ bool aAnonymize) override;
+
+ private:
+ ~GeckoProfilerReporter() {}
+};
+
+#endif
diff --git a/tools/profiler/public/GeckoTraceEvent.h b/tools/profiler/public/GeckoTraceEvent.h
new file mode 100644
index 0000000000..75affaf9c8
--- /dev/null
+++ b/tools/profiler/public/GeckoTraceEvent.h
@@ -0,0 +1,1060 @@
+// Copyright (c) 2012 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file under third_party_mods/chromium or at:
+// http://src.chromium.org/svn/trunk/src/LICENSE
+
+#ifndef GECKO_TRACE_EVENT_H_
+#define GECKO_TRACE_EVENT_H_
+
+#include "MicroGeckoProfiler.h"
+
+// Extracted from Chromium's src/base/debug/trace_event.h, modified to talk to
+// the Gecko profiler.
+
+#if defined(RTC_DISABLE_TRACE_EVENTS)
+# define RTC_TRACE_EVENTS_ENABLED 0
+#else
+# define RTC_TRACE_EVENTS_ENABLED 1
+#endif
+
+// Type values for identifying types in the TraceValue union.
+#define TRACE_VALUE_TYPE_BOOL (static_cast<unsigned char>(1))
+#define TRACE_VALUE_TYPE_UINT (static_cast<unsigned char>(2))
+#define TRACE_VALUE_TYPE_INT (static_cast<unsigned char>(3))
+#define TRACE_VALUE_TYPE_DOUBLE (static_cast<unsigned char>(4))
+#define TRACE_VALUE_TYPE_POINTER (static_cast<unsigned char>(5))
+#define TRACE_VALUE_TYPE_STRING (static_cast<unsigned char>(6))
+#define TRACE_VALUE_TYPE_COPY_STRING (static_cast<unsigned char>(7))
+
+#if RTC_TRACE_EVENTS_ENABLED
+
+// This header is designed to give you trace_event macros without specifying
+// how the events actually get collected and stored. If you need to expose trace
+// event to some other universe, you can copy-and-paste this file,
+// implement the TRACE_EVENT_API macros, and do any other necessary fixup for
+// the target platform. The end result is that multiple libraries can funnel
+// events through to a shared trace event collector.
+
+// Trace events are for tracking application performance and resource usage.
+// Macros are provided to track:
+// Begin and end of function calls
+// Counters
+//
+// Events are issued against categories. Whereas RTC_LOG's
+// categories are statically defined, TRACE categories are created
+// implicitly with a string. For example:
+// TRACE_EVENT_INSTANT0("MY_SUBSYSTEM", "SomeImportantEvent")
+//
+// Events can be INSTANT, or can be pairs of BEGIN and END in the same scope:
+// TRACE_EVENT_BEGIN0("MY_SUBSYSTEM", "SomethingCostly")
+// doSomethingCostly()
+// TRACE_EVENT_END0("MY_SUBSYSTEM", "SomethingCostly")
+// Note: our tools can't always determine the correct BEGIN/END pairs unless
+// these are used in the same scope. Use ASYNC_BEGIN/ASYNC_END macros if you
+// need them to be in separate scopes.
+//
+// A common use case is to trace entire function scopes. This
+// issues a trace BEGIN and END automatically:
+// void doSomethingCostly() {
+// TRACE_EVENT0("MY_SUBSYSTEM", "doSomethingCostly");
+// ...
+// }
+//
+// Additional parameters can be associated with an event:
+// void doSomethingCostly2(int howMuch) {
+// TRACE_EVENT1("MY_SUBSYSTEM", "doSomethingCostly",
+// "howMuch", howMuch);
+// ...
+// }
+//
+// The trace system will automatically add to this information the
+// current process id, thread id, and a timestamp in microseconds.
+//
+// To trace an asynchronous procedure such as an IPC send/receive, use
+// ASYNC_BEGIN and ASYNC_END:
+// [single threaded sender code]
+// static int send_count = 0;
+// ++send_count;
+// TRACE_EVENT_ASYNC_BEGIN0("ipc", "message", send_count);
+// Send(new MyMessage(send_count));
+// [receive code]
+// void OnMyMessage(send_count) {
+// TRACE_EVENT_ASYNC_END0("ipc", "message", send_count);
+// }
+// The third parameter is a unique ID to match ASYNC_BEGIN/ASYNC_END pairs.
+// ASYNC_BEGIN and ASYNC_END can occur on any thread of any traced process.
+// Pointers can be used for the ID parameter, and they will be mangled
+// internally so that the same pointer on two different processes will not
+// match. For example:
+// class MyTracedClass {
+// public:
+// MyTracedClass() {
+// TRACE_EVENT_ASYNC_BEGIN0("category", "MyTracedClass", this);
+// }
+// ~MyTracedClass() {
+// TRACE_EVENT_ASYNC_END0("category", "MyTracedClass", this);
+// }
+// }
+//
+// Trace event also supports counters, which is a way to track a quantity
+// as it varies over time. Counters are created with the following macro:
+// TRACE_COUNTER1("MY_SUBSYSTEM", "myCounter", g_myCounterValue);
+//
+// Counters are process-specific. The macro itself can be issued from any
+// thread, however.
+//
+// Sometimes, you want to track two counters at once. You can do this with two
+// counter macros:
+// TRACE_COUNTER1("MY_SUBSYSTEM", "myCounter0", g_myCounterValue[0]);
+// TRACE_COUNTER1("MY_SUBSYSTEM", "myCounter1", g_myCounterValue[1]);
+// Or you can do it with a combined macro:
+// TRACE_COUNTER2("MY_SUBSYSTEM", "myCounter",
+// "bytesPinned", g_myCounterValue[0],
+// "bytesAllocated", g_myCounterValue[1]);
+// This indicates to the tracing UI that these counters should be displayed
+// in a single graph, as a summed area chart.
+//
+// Since counters are in a global namespace, you may want to disembiguate with a
+// unique ID, by using the TRACE_COUNTER_ID* variations.
+//
+// By default, trace collection is compiled in, but turned off at runtime.
+// Collecting trace data is the responsibility of the embedding
+// application. In Chrome's case, navigating to about:tracing will turn on
+// tracing and display data collected across all active processes.
+//
+//
+// Memory scoping note:
+// Tracing copies the pointers, not the string content, of the strings passed
+// in for category, name, and arg_names. Thus, the following code will
+// cause problems:
+// char* str = strdup("impprtantName");
+// TRACE_EVENT_INSTANT0("SUBSYSTEM", str); // BAD!
+// free(str); // Trace system now has dangling pointer
+//
+// To avoid this issue with the `name` and `arg_name` parameters, use the
+// TRACE_EVENT_COPY_XXX overloads of the macros at additional runtime overhead.
+// Notes: The category must always be in a long-lived char* (i.e. static const).
+// The `arg_values`, when used, are always deep copied with the _COPY
+// macros.
+//
+// When are string argument values copied:
+// const char* arg_values are only referenced by default:
+// TRACE_EVENT1("category", "name",
+// "arg1", "literal string is only referenced");
+// Use TRACE_STR_COPY to force copying of a const char*:
+// TRACE_EVENT1("category", "name",
+// "arg1", TRACE_STR_COPY("string will be copied"));
+// std::string arg_values are always copied:
+// TRACE_EVENT1("category", "name",
+// "arg1", std::string("string will be copied"));
+//
+//
+// Thread Safety:
+// Thread safety is provided by methods defined in event_tracer.h. See the file
+// for details.
+
+// By default, const char* argument values are assumed to have long-lived scope
+// and will not be copied. Use this macro to force a const char* to be copied.
+# define TRACE_STR_COPY(str) \
+ webrtc::trace_event_internal::TraceStringWithCopy(str)
+
+// This will mark the trace event as disabled by default. The user will need
+// to explicitly enable the event.
+# define TRACE_DISABLED_BY_DEFAULT(name) "disabled-by-default-" name
+
+// By default, uint64 ID argument values are not mangled with the Process ID in
+// TRACE_EVENT_ASYNC macros. Use this macro to force Process ID mangling.
+# define TRACE_ID_MANGLE(id) \
+ webrtc::trace_event_internal::TraceID::ForceMangle(id)
+
+// Records a pair of begin and end events called "name" for the current
+// scope, with 0, 1 or 2 associated arguments. If the category is not
+// enabled, then this does nothing.
+// - category and name strings must have application lifetime (statics or
+// literals). They may not include " chars.
+# define TRACE_EVENT0(category, name) \
+ INTERNAL_TRACE_EVENT_ADD_SCOPED(category, name)
+# define TRACE_EVENT1(category, name, arg1_name, arg1_val) \
+ INTERNAL_TRACE_EVENT_ADD_SCOPED(category, name, arg1_name, arg1_val)
+# define TRACE_EVENT2(category, name, arg1_name, arg1_val, arg2_name, \
+ arg2_val) \
+ INTERNAL_TRACE_EVENT_ADD_SCOPED(category, name, arg1_name, arg1_val, \
+ arg2_name, arg2_val)
+
+// Records a single event called "name" immediately, with 0, 1 or 2
+// associated arguments. If the category is not enabled, then this
+// does nothing.
+// - category and name strings must have application lifetime (statics or
+// literals). They may not include " chars.
+# define TRACE_EVENT_INSTANT0(category, name) \
+ INTERNAL_TRACE_EVENT_ADD(TRACE_EVENT_PHASE_INSTANT, category, name, \
+ TRACE_EVENT_FLAG_NONE)
+# define TRACE_EVENT_INSTANT1(category, name, arg1_name, arg1_val) \
+ INTERNAL_TRACE_EVENT_ADD(TRACE_EVENT_PHASE_INSTANT, category, name, \
+ TRACE_EVENT_FLAG_NONE, arg1_name, arg1_val)
+# define TRACE_EVENT_INSTANT2(category, name, arg1_name, arg1_val, arg2_name, \
+ arg2_val) \
+ INTERNAL_TRACE_EVENT_ADD(TRACE_EVENT_PHASE_INSTANT, category, name, \
+ TRACE_EVENT_FLAG_NONE, arg1_name, arg1_val, \
+ arg2_name, arg2_val)
+# define TRACE_EVENT_COPY_INSTANT0(category, name) \
+ INTERNAL_TRACE_EVENT_ADD(TRACE_EVENT_PHASE_INSTANT, category, name, \
+ TRACE_EVENT_FLAG_COPY)
+# define TRACE_EVENT_COPY_INSTANT1(category, name, arg1_name, arg1_val) \
+ INTERNAL_TRACE_EVENT_ADD(TRACE_EVENT_PHASE_INSTANT, category, name, \
+ TRACE_EVENT_FLAG_COPY, arg1_name, arg1_val)
+# define TRACE_EVENT_COPY_INSTANT2(category, name, arg1_name, arg1_val, \
+ arg2_name, arg2_val) \
+ INTERNAL_TRACE_EVENT_ADD(TRACE_EVENT_PHASE_INSTANT, category, name, \
+ TRACE_EVENT_FLAG_COPY, arg1_name, arg1_val, \
+ arg2_name, arg2_val)
+
+// Records a single BEGIN event called "name" immediately, with 0, 1 or 2
+// associated arguments. If the category is not enabled, then this
+// does nothing.
+// - category and name strings must have application lifetime (statics or
+// literals). They may not include " chars.
+# define TRACE_EVENT_BEGIN0(category, name) \
+ INTERNAL_TRACE_EVENT_ADD(TRACE_EVENT_PHASE_BEGIN, category, name, \
+ TRACE_EVENT_FLAG_NONE)
+# define TRACE_EVENT_BEGIN1(category, name, arg1_name, arg1_val) \
+ INTERNAL_TRACE_EVENT_ADD(TRACE_EVENT_PHASE_BEGIN, category, name, \
+ TRACE_EVENT_FLAG_NONE, arg1_name, arg1_val)
+# define TRACE_EVENT_BEGIN2(category, name, arg1_name, arg1_val, arg2_name, \
+ arg2_val) \
+ INTERNAL_TRACE_EVENT_ADD(TRACE_EVENT_PHASE_BEGIN, category, name, \
+ TRACE_EVENT_FLAG_NONE, arg1_name, arg1_val, \
+ arg2_name, arg2_val)
+# define TRACE_EVENT_COPY_BEGIN0(category, name) \
+ INTERNAL_TRACE_EVENT_ADD(TRACE_EVENT_PHASE_BEGIN, category, name, \
+ TRACE_EVENT_FLAG_COPY)
+# define TRACE_EVENT_COPY_BEGIN1(category, name, arg1_name, arg1_val) \
+ INTERNAL_TRACE_EVENT_ADD(TRACE_EVENT_PHASE_BEGIN, category, name, \
+ TRACE_EVENT_FLAG_COPY, arg1_name, arg1_val)
+# define TRACE_EVENT_COPY_BEGIN2(category, name, arg1_name, arg1_val, \
+ arg2_name, arg2_val) \
+ INTERNAL_TRACE_EVENT_ADD(TRACE_EVENT_PHASE_BEGIN, category, name, \
+ TRACE_EVENT_FLAG_COPY, arg1_name, arg1_val, \
+ arg2_name, arg2_val)
+
+// Records a single END event for "name" immediately. If the category
+// is not enabled, then this does nothing.
+// - category and name strings must have application lifetime (statics or
+// literals). They may not include " chars.
+# define TRACE_EVENT_END0(category, name) \
+ INTERNAL_TRACE_EVENT_ADD(TRACE_EVENT_PHASE_END, category, name, \
+ TRACE_EVENT_FLAG_NONE)
+# define TRACE_EVENT_END1(category, name, arg1_name, arg1_val) \
+ INTERNAL_TRACE_EVENT_ADD(TRACE_EVENT_PHASE_END, category, name, \
+ TRACE_EVENT_FLAG_NONE, arg1_name, arg1_val)
+# define TRACE_EVENT_END2(category, name, arg1_name, arg1_val, arg2_name, \
+ arg2_val) \
+ INTERNAL_TRACE_EVENT_ADD(TRACE_EVENT_PHASE_END, category, name, \
+ TRACE_EVENT_FLAG_NONE, arg1_name, arg1_val, \
+ arg2_name, arg2_val)
+# define TRACE_EVENT_COPY_END0(category, name) \
+ INTERNAL_TRACE_EVENT_ADD(TRACE_EVENT_PHASE_END, category, name, \
+ TRACE_EVENT_FLAG_COPY)
+# define TRACE_EVENT_COPY_END1(category, name, arg1_name, arg1_val) \
+ INTERNAL_TRACE_EVENT_ADD(TRACE_EVENT_PHASE_END, category, name, \
+ TRACE_EVENT_FLAG_COPY, arg1_name, arg1_val)
+# define TRACE_EVENT_COPY_END2(category, name, arg1_name, arg1_val, \
+ arg2_name, arg2_val) \
+ INTERNAL_TRACE_EVENT_ADD(TRACE_EVENT_PHASE_END, category, name, \
+ TRACE_EVENT_FLAG_COPY, arg1_name, arg1_val, \
+ arg2_name, arg2_val)
+
+// Records the value of a counter called "name" immediately. Value
+// must be representable as a 32 bit integer.
+// - category and name strings must have application lifetime (statics or
+// literals). They may not include " chars.
+# define TRACE_COUNTER1(category, name, value) \
+ INTERNAL_TRACE_EVENT_ADD(TRACE_EVENT_PHASE_COUNTER, category, name, \
+ TRACE_EVENT_FLAG_NONE, "value", \
+ static_cast<int>(value))
+# define TRACE_COPY_COUNTER1(category, name, value) \
+ INTERNAL_TRACE_EVENT_ADD(TRACE_EVENT_PHASE_COUNTER, category, name, \
+ TRACE_EVENT_FLAG_COPY, "value", \
+ static_cast<int>(value))
+
+// Records the values of a multi-parted counter called "name" immediately.
+// The UI will treat value1 and value2 as parts of a whole, displaying their
+// values as a stacked-bar chart.
+// - category and name strings must have application lifetime (statics or
+// literals). They may not include " chars.
+# define TRACE_COUNTER2(category, name, value1_name, value1_val, value2_name, \
+ value2_val) \
+ INTERNAL_TRACE_EVENT_ADD(TRACE_EVENT_PHASE_COUNTER, category, name, \
+ TRACE_EVENT_FLAG_NONE, value1_name, \
+ static_cast<int>(value1_val), value2_name, \
+ static_cast<int>(value2_val))
+# define TRACE_COPY_COUNTER2(category, name, value1_name, value1_val, \
+ value2_name, value2_val) \
+ INTERNAL_TRACE_EVENT_ADD(TRACE_EVENT_PHASE_COUNTER, category, name, \
+ TRACE_EVENT_FLAG_COPY, value1_name, \
+ static_cast<int>(value1_val), value2_name, \
+ static_cast<int>(value2_val))
+
+// Records the value of a counter called "name" immediately. Value
+// must be representable as a 32 bit integer.
+// - category and name strings must have application lifetime (statics or
+// literals). They may not include " chars.
+// - `id` is used to disambiguate counters with the same name. It must either
+// be a pointer or an integer value up to 64 bits. If it's a pointer, the bits
+// will be xored with a hash of the process ID so that the same pointer on
+// two different processes will not collide.
+# define TRACE_COUNTER_ID1(category, name, id, value) \
+ INTERNAL_TRACE_EVENT_ADD_WITH_ID(TRACE_EVENT_PHASE_COUNTER, category, \
+ name, id, TRACE_EVENT_FLAG_NONE, "value", \
+ static_cast<int>(value))
+# define TRACE_COPY_COUNTER_ID1(category, name, id, value) \
+ INTERNAL_TRACE_EVENT_ADD_WITH_ID(TRACE_EVENT_PHASE_COUNTER, category, \
+ name, id, TRACE_EVENT_FLAG_COPY, "value", \
+ static_cast<int>(value))
+
+// Records the values of a multi-parted counter called "name" immediately.
+// The UI will treat value1 and value2 as parts of a whole, displaying their
+// values as a stacked-bar chart.
+// - category and name strings must have application lifetime (statics or
+// literals). They may not include " chars.
+// - `id` is used to disambiguate counters with the same name. It must either
+// be a pointer or an integer value up to 64 bits. If it's a pointer, the bits
+// will be xored with a hash of the process ID so that the same pointer on
+// two different processes will not collide.
+# define TRACE_COUNTER_ID2(category, name, id, value1_name, value1_val, \
+ value2_name, value2_val) \
+ INTERNAL_TRACE_EVENT_ADD_WITH_ID( \
+ TRACE_EVENT_PHASE_COUNTER, category, name, id, TRACE_EVENT_FLAG_NONE, \
+ value1_name, static_cast<int>(value1_val), value2_name, \
+ static_cast<int>(value2_val))
+# define TRACE_COPY_COUNTER_ID2(category, name, id, value1_name, value1_val, \
+ value2_name, value2_val) \
+ INTERNAL_TRACE_EVENT_ADD_WITH_ID( \
+ TRACE_EVENT_PHASE_COUNTER, category, name, id, TRACE_EVENT_FLAG_COPY, \
+ value1_name, static_cast<int>(value1_val), value2_name, \
+ static_cast<int>(value2_val))
+
+// Records a single ASYNC_BEGIN event called "name" immediately, with 0, 1 or 2
+// associated arguments. If the category is not enabled, then this
+// does nothing.
+// - category and name strings must have application lifetime (statics or
+// literals). They may not include " chars.
+// - `id` is used to match the ASYNC_BEGIN event with the ASYNC_END event. ASYNC
+// events are considered to match if their category, name and id values all
+// match. `id` must either be a pointer or an integer value up to 64 bits. If
+// it's a pointer, the bits will be xored with a hash of the process ID so
+// that the same pointer on two different processes will not collide.
+// An asynchronous operation can consist of multiple phases. The first phase is
+// defined by the ASYNC_BEGIN calls. Additional phases can be defined using the
+// ASYNC_STEP macros. When the operation completes, call ASYNC_END.
+// An ASYNC trace typically occur on a single thread (if not, they will only be
+// drawn on the thread defined in the ASYNC_BEGIN event), but all events in that
+// operation must use the same `name` and `id`. Each event can have its own
+// args.
+# define TRACE_EVENT_ASYNC_BEGIN0(category, name, id) \
+ INTERNAL_TRACE_EVENT_ADD_WITH_ID(TRACE_EVENT_PHASE_ASYNC_BEGIN, category, \
+ name, id, TRACE_EVENT_FLAG_NONE)
+# define TRACE_EVENT_ASYNC_BEGIN1(category, name, id, arg1_name, arg1_val) \
+ INTERNAL_TRACE_EVENT_ADD_WITH_ID(TRACE_EVENT_PHASE_ASYNC_BEGIN, category, \
+ name, id, TRACE_EVENT_FLAG_NONE, \
+ arg1_name, arg1_val)
+# define TRACE_EVENT_ASYNC_BEGIN2(category, name, id, arg1_name, arg1_val, \
+ arg2_name, arg2_val) \
+ INTERNAL_TRACE_EVENT_ADD_WITH_ID(TRACE_EVENT_PHASE_ASYNC_BEGIN, category, \
+ name, id, TRACE_EVENT_FLAG_NONE, \
+ arg1_name, arg1_val, arg2_name, arg2_val)
+# define TRACE_EVENT_COPY_ASYNC_BEGIN0(category, name, id) \
+ INTERNAL_TRACE_EVENT_ADD_WITH_ID(TRACE_EVENT_PHASE_ASYNC_BEGIN, category, \
+ name, id, TRACE_EVENT_FLAG_COPY)
+# define TRACE_EVENT_COPY_ASYNC_BEGIN1(category, name, id, arg1_name, \
+ arg1_val) \
+ INTERNAL_TRACE_EVENT_ADD_WITH_ID(TRACE_EVENT_PHASE_ASYNC_BEGIN, category, \
+ name, id, TRACE_EVENT_FLAG_COPY, \
+ arg1_name, arg1_val)
+# define TRACE_EVENT_COPY_ASYNC_BEGIN2(category, name, id, arg1_name, \
+ arg1_val, arg2_name, arg2_val) \
+ INTERNAL_TRACE_EVENT_ADD_WITH_ID(TRACE_EVENT_PHASE_ASYNC_BEGIN, category, \
+ name, id, TRACE_EVENT_FLAG_COPY, \
+ arg1_name, arg1_val, arg2_name, arg2_val)
+
+// Records a single ASYNC_STEP event for `step` immediately. If the category
+// is not enabled, then this does nothing. The `name` and `id` must match the
+// ASYNC_BEGIN event above. The `step` param identifies this step within the
+// async event. This should be called at the beginning of the next phase of an
+// asynchronous operation.
+# define TRACE_EVENT_ASYNC_STEP0(category, name, id, step) \
+ INTERNAL_TRACE_EVENT_ADD_WITH_ID(TRACE_EVENT_PHASE_ASYNC_STEP, category, \
+ name, id, TRACE_EVENT_FLAG_NONE, "step", \
+ step)
+# define TRACE_EVENT_ASYNC_STEP1(category, name, id, step, arg1_name, \
+ arg1_val) \
+ INTERNAL_TRACE_EVENT_ADD_WITH_ID(TRACE_EVENT_PHASE_ASYNC_STEP, category, \
+ name, id, TRACE_EVENT_FLAG_NONE, "step", \
+ step, arg1_name, arg1_val)
+# define TRACE_EVENT_COPY_ASYNC_STEP0(category, name, id, step) \
+ INTERNAL_TRACE_EVENT_ADD_WITH_ID(TRACE_EVENT_PHASE_ASYNC_STEP, category, \
+ name, id, TRACE_EVENT_FLAG_COPY, "step", \
+ step)
+# define TRACE_EVENT_COPY_ASYNC_STEP1(category, name, id, step, arg1_name, \
+ arg1_val) \
+ INTERNAL_TRACE_EVENT_ADD_WITH_ID(TRACE_EVENT_PHASE_ASYNC_STEP, category, \
+ name, id, TRACE_EVENT_FLAG_COPY, "step", \
+ step, arg1_name, arg1_val)
+
+// Records a single ASYNC_END event for "name" immediately. If the category
+// is not enabled, then this does nothing.
+# define TRACE_EVENT_ASYNC_END0(category, name, id) \
+ INTERNAL_TRACE_EVENT_ADD_WITH_ID(TRACE_EVENT_PHASE_ASYNC_END, category, \
+ name, id, TRACE_EVENT_FLAG_NONE)
+# define TRACE_EVENT_ASYNC_END1(category, name, id, arg1_name, arg1_val) \
+ INTERNAL_TRACE_EVENT_ADD_WITH_ID(TRACE_EVENT_PHASE_ASYNC_END, category, \
+ name, id, TRACE_EVENT_FLAG_NONE, \
+ arg1_name, arg1_val)
+# define TRACE_EVENT_ASYNC_END2(category, name, id, arg1_name, arg1_val, \
+ arg2_name, arg2_val) \
+ INTERNAL_TRACE_EVENT_ADD_WITH_ID(TRACE_EVENT_PHASE_ASYNC_END, category, \
+ name, id, TRACE_EVENT_FLAG_NONE, \
+ arg1_name, arg1_val, arg2_name, arg2_val)
+# define TRACE_EVENT_COPY_ASYNC_END0(category, name, id) \
+ INTERNAL_TRACE_EVENT_ADD_WITH_ID(TRACE_EVENT_PHASE_ASYNC_END, category, \
+ name, id, TRACE_EVENT_FLAG_COPY)
+# define TRACE_EVENT_COPY_ASYNC_END1(category, name, id, arg1_name, arg1_val) \
+ INTERNAL_TRACE_EVENT_ADD_WITH_ID(TRACE_EVENT_PHASE_ASYNC_END, category, \
+ name, id, TRACE_EVENT_FLAG_COPY, \
+ arg1_name, arg1_val)
+# define TRACE_EVENT_COPY_ASYNC_END2(category, name, id, arg1_name, arg1_val, \
+ arg2_name, arg2_val) \
+ INTERNAL_TRACE_EVENT_ADD_WITH_ID(TRACE_EVENT_PHASE_ASYNC_END, category, \
+ name, id, TRACE_EVENT_FLAG_COPY, \
+ arg1_name, arg1_val, arg2_name, arg2_val)
+
+// Records a single FLOW_BEGIN event called "name" immediately, with 0, 1 or 2
+// associated arguments. If the category is not enabled, then this
+// does nothing.
+// - category and name strings must have application lifetime (statics or
+// literals). They may not include " chars.
+// - `id` is used to match the FLOW_BEGIN event with the FLOW_END event. FLOW
+// events are considered to match if their category, name and id values all
+// match. `id` must either be a pointer or an integer value up to 64 bits. If
+// it's a pointer, the bits will be xored with a hash of the process ID so
+// that the same pointer on two different processes will not collide.
+// FLOW events are different from ASYNC events in how they are drawn by the
+// tracing UI. A FLOW defines asynchronous data flow, such as posting a task
+// (FLOW_BEGIN) and later executing that task (FLOW_END). Expect FLOWs to be
+// drawn as lines or arrows from FLOW_BEGIN scopes to FLOW_END scopes. Similar
+// to ASYNC, a FLOW can consist of multiple phases. The first phase is defined
+// by the FLOW_BEGIN calls. Additional phases can be defined using the FLOW_STEP
+// macros. When the operation completes, call FLOW_END. An async operation can
+// span threads and processes, but all events in that operation must use the
+// same `name` and `id`. Each event can have its own args.
+# define TRACE_EVENT_FLOW_BEGIN0(category, name, id) \
+ INTERNAL_TRACE_EVENT_ADD_WITH_ID(TRACE_EVENT_PHASE_FLOW_BEGIN, category, \
+ name, id, TRACE_EVENT_FLAG_NONE)
+# define TRACE_EVENT_FLOW_BEGIN1(category, name, id, arg1_name, arg1_val) \
+ INTERNAL_TRACE_EVENT_ADD_WITH_ID(TRACE_EVENT_PHASE_FLOW_BEGIN, category, \
+ name, id, TRACE_EVENT_FLAG_NONE, \
+ arg1_name, arg1_val)
+# define TRACE_EVENT_FLOW_BEGIN2(category, name, id, arg1_name, arg1_val, \
+ arg2_name, arg2_val) \
+ INTERNAL_TRACE_EVENT_ADD_WITH_ID(TRACE_EVENT_PHASE_FLOW_BEGIN, category, \
+ name, id, TRACE_EVENT_FLAG_NONE, \
+ arg1_name, arg1_val, arg2_name, arg2_val)
+# define TRACE_EVENT_COPY_FLOW_BEGIN0(category, name, id) \
+ INTERNAL_TRACE_EVENT_ADD_WITH_ID(TRACE_EVENT_PHASE_FLOW_BEGIN, category, \
+ name, id, TRACE_EVENT_FLAG_COPY)
+# define TRACE_EVENT_COPY_FLOW_BEGIN1(category, name, id, arg1_name, \
+ arg1_val) \
+ INTERNAL_TRACE_EVENT_ADD_WITH_ID(TRACE_EVENT_PHASE_FLOW_BEGIN, category, \
+ name, id, TRACE_EVENT_FLAG_COPY, \
+ arg1_name, arg1_val)
+# define TRACE_EVENT_COPY_FLOW_BEGIN2(category, name, id, arg1_name, \
+ arg1_val, arg2_name, arg2_val) \
+ INTERNAL_TRACE_EVENT_ADD_WITH_ID(TRACE_EVENT_PHASE_FLOW_BEGIN, category, \
+ name, id, TRACE_EVENT_FLAG_COPY, \
+ arg1_name, arg1_val, arg2_name, arg2_val)
+
+// Records a single FLOW_STEP event for `step` immediately. If the category
+// is not enabled, then this does nothing. The `name` and `id` must match the
+// FLOW_BEGIN event above. The `step` param identifies this step within the
+// async event. This should be called at the beginning of the next phase of an
+// asynchronous operation.
+# define TRACE_EVENT_FLOW_STEP0(category, name, id, step) \
+ INTERNAL_TRACE_EVENT_ADD_WITH_ID(TRACE_EVENT_PHASE_FLOW_STEP, category, \
+ name, id, TRACE_EVENT_FLAG_NONE, "step", \
+ step)
+# define TRACE_EVENT_FLOW_STEP1(category, name, id, step, arg1_name, \
+ arg1_val) \
+ INTERNAL_TRACE_EVENT_ADD_WITH_ID(TRACE_EVENT_PHASE_FLOW_STEP, category, \
+ name, id, TRACE_EVENT_FLAG_NONE, "step", \
+ step, arg1_name, arg1_val)
+# define TRACE_EVENT_COPY_FLOW_STEP0(category, name, id, step) \
+ INTERNAL_TRACE_EVENT_ADD_WITH_ID(TRACE_EVENT_PHASE_FLOW_STEP, category, \
+ name, id, TRACE_EVENT_FLAG_COPY, "step", \
+ step)
+# define TRACE_EVENT_COPY_FLOW_STEP1(category, name, id, step, arg1_name, \
+ arg1_val) \
+ INTERNAL_TRACE_EVENT_ADD_WITH_ID(TRACE_EVENT_PHASE_FLOW_STEP, category, \
+ name, id, TRACE_EVENT_FLAG_COPY, "step", \
+ step, arg1_name, arg1_val)
+
+// Records a single FLOW_END event for "name" immediately. If the category
+// is not enabled, then this does nothing.
+# define TRACE_EVENT_FLOW_END0(category, name, id) \
+ INTERNAL_TRACE_EVENT_ADD_WITH_ID(TRACE_EVENT_PHASE_FLOW_END, category, \
+ name, id, TRACE_EVENT_FLAG_NONE)
+# define TRACE_EVENT_FLOW_END1(category, name, id, arg1_name, arg1_val) \
+ INTERNAL_TRACE_EVENT_ADD_WITH_ID(TRACE_EVENT_PHASE_FLOW_END, category, \
+ name, id, TRACE_EVENT_FLAG_NONE, \
+ arg1_name, arg1_val)
+# define TRACE_EVENT_FLOW_END2(category, name, id, arg1_name, arg1_val, \
+ arg2_name, arg2_val) \
+ INTERNAL_TRACE_EVENT_ADD_WITH_ID(TRACE_EVENT_PHASE_FLOW_END, category, \
+ name, id, TRACE_EVENT_FLAG_NONE, \
+ arg1_name, arg1_val, arg2_name, arg2_val)
+# define TRACE_EVENT_COPY_FLOW_END0(category, name, id) \
+ INTERNAL_TRACE_EVENT_ADD_WITH_ID(TRACE_EVENT_PHASE_FLOW_END, category, \
+ name, id, TRACE_EVENT_FLAG_COPY)
+# define TRACE_EVENT_COPY_FLOW_END1(category, name, id, arg1_name, arg1_val) \
+ INTERNAL_TRACE_EVENT_ADD_WITH_ID(TRACE_EVENT_PHASE_FLOW_END, category, \
+ name, id, TRACE_EVENT_FLAG_COPY, \
+ arg1_name, arg1_val)
+# define TRACE_EVENT_COPY_FLOW_END2(category, name, id, arg1_name, arg1_val, \
+ arg2_name, arg2_val) \
+ INTERNAL_TRACE_EVENT_ADD_WITH_ID(TRACE_EVENT_PHASE_FLOW_END, category, \
+ name, id, TRACE_EVENT_FLAG_COPY, \
+ arg1_name, arg1_val, arg2_name, arg2_val)
+
+////////////////////////////////////////////////////////////////////////////////
+// Implementation specific tracing API definitions.
+
+// Get a pointer to the enabled state of the given trace category. Only
+// long-lived literal strings should be given as the category name. The returned
+// pointer can be held permanently in a local static for example. If the
+// unsigned char is non-zero, tracing is enabled. If tracing is enabled,
+// TRACE_EVENT_API_ADD_TRACE_EVENT can be called. It's OK if tracing is disabled
+// between the load of the tracing state and the call to
+// TRACE_EVENT_API_ADD_TRACE_EVENT, because this flag only provides an early out
+// for best performance when tracing is disabled.
+// const unsigned char*
+// TRACE_EVENT_API_GET_CATEGORY_ENABLED(const char* category_name)
+# define TRACE_EVENT_API_GET_CATEGORY_ENABLED \
+ webrtc::EventTracer::GetCategoryEnabled
+
+// Add a trace event to the platform tracing system.
+// void TRACE_EVENT_API_ADD_TRACE_EVENT(
+// char phase,
+// const unsigned char* category_enabled,
+// const char* name,
+// unsigned long long id,
+// int num_args,
+// const char** arg_names,
+// const unsigned char* arg_types,
+// const unsigned long long* arg_values,
+// unsigned char flags)
+# define TRACE_EVENT_API_ADD_TRACE_EVENT MOZ_INTERNAL_UPROFILER_SIMPLE_EVENT
+
+////////////////////////////////////////////////////////////////////////////////
+
+// Implementation detail: trace event macros create temporary variables
+// to keep instrumentation overhead low. These macros give each temporary
+// variable a unique name based on the line number to prevent name collissions.
+# define INTERNAL_TRACE_EVENT_UID3(a, b) trace_event_unique_##a##b
+# define INTERNAL_TRACE_EVENT_UID2(a, b) INTERNAL_TRACE_EVENT_UID3(a, b)
+# define INTERNAL_TRACE_EVENT_UID(name_prefix) \
+ INTERNAL_TRACE_EVENT_UID2(name_prefix, __LINE__)
+
+# if WEBRTC_NON_STATIC_TRACE_EVENT_HANDLERS
+# define INTERNAL_TRACE_EVENT_INFO_TYPE const unsigned char*
+# else
+# define INTERNAL_TRACE_EVENT_INFO_TYPE static const unsigned char*
+# endif // WEBRTC_NON_STATIC_TRACE_EVENT_HANDLERS
+
+// Implementation detail: internal macro to create static category.
+# define INTERNAL_TRACE_EVENT_GET_CATEGORY_INFO(category) \
+ INTERNAL_TRACE_EVENT_INFO_TYPE INTERNAL_TRACE_EVENT_UID(catstatic) = \
+ reinterpret_cast<const unsigned char*>(category);
+
+// Implementation detail: internal macro to create static category and add
+// event if the category is enabled.
+# define INTERNAL_TRACE_EVENT_ADD(phase, category, name, flags, ...) \
+ do { \
+ INTERNAL_TRACE_EVENT_GET_CATEGORY_INFO(category); \
+ if (*INTERNAL_TRACE_EVENT_UID(catstatic)) { \
+ webrtc::trace_event_internal::AddTraceEvent( \
+ phase, INTERNAL_TRACE_EVENT_UID(catstatic), name, \
+ webrtc::trace_event_internal::kNoEventId, flags, ##__VA_ARGS__); \
+ } \
+ } while (0)
+
+// Implementation detail: internal macro to create static category and add begin
+// event if the category is enabled. Also adds the end event when the scope
+// ends.
+# define INTERNAL_TRACE_EVENT_ADD_SCOPED(category, name, ...) \
+ INTERNAL_TRACE_EVENT_GET_CATEGORY_INFO(category); \
+ webrtc::trace_event_internal::TraceEndOnScopeClose \
+ INTERNAL_TRACE_EVENT_UID(profileScope); \
+ if (*INTERNAL_TRACE_EVENT_UID(catstatic)) { \
+ webrtc::trace_event_internal::AddTraceEvent( \
+ TRACE_EVENT_PHASE_BEGIN, INTERNAL_TRACE_EVENT_UID(catstatic), name, \
+ webrtc::trace_event_internal::kNoEventId, TRACE_EVENT_FLAG_NONE, \
+ ##__VA_ARGS__); \
+ INTERNAL_TRACE_EVENT_UID(profileScope) \
+ .Initialize(INTERNAL_TRACE_EVENT_UID(catstatic), name); \
+ }
+
+// Implementation detail: internal macro to create static category and add
+// event if the category is enabled.
+# define INTERNAL_TRACE_EVENT_ADD_WITH_ID(phase, category, name, id, flags, \
+ ...) \
+ do { \
+ INTERNAL_TRACE_EVENT_GET_CATEGORY_INFO(category); \
+ if (*INTERNAL_TRACE_EVENT_UID(catstatic)) { \
+ unsigned char trace_event_flags = flags | TRACE_EVENT_FLAG_HAS_ID; \
+ webrtc::trace_event_internal::TraceID trace_event_trace_id( \
+ id, &trace_event_flags); \
+ webrtc::trace_event_internal::AddTraceEvent( \
+ phase, INTERNAL_TRACE_EVENT_UID(catstatic), name, \
+ trace_event_trace_id.data(), trace_event_flags, ##__VA_ARGS__); \
+ } \
+ } while (0)
+
+# ifdef MOZ_GECKO_PROFILER
+# define MOZ_INTERNAL_UPROFILER_SIMPLE_EVENT(phase, category_enabled, name, \
+ id, num_args, arg_names, \
+ arg_types, arg_values, flags) \
+ uprofiler_simple_event_marker(name, phase, num_args, arg_names, \
+ arg_types, arg_values);
+# else
+# define MOZ_INTERNAL_UPROFILER_SIMPLE_EVENT(phase, category_enabled, name, \
+ id, num_args, arg_names, \
+ arg_types, arg_values, flags)
+# endif
+
+// Notes regarding the following definitions:
+// New values can be added and propagated to third party libraries, but existing
+// definitions must never be changed, because third party libraries may use old
+// definitions.
+
+// Phase indicates the nature of an event entry. E.g. part of a begin/end pair.
+# define TRACE_EVENT_PHASE_BEGIN ('B')
+# define TRACE_EVENT_PHASE_END ('E')
+# define TRACE_EVENT_PHASE_INSTANT ('I')
+# define TRACE_EVENT_PHASE_ASYNC_BEGIN ('S')
+# define TRACE_EVENT_PHASE_ASYNC_STEP ('T')
+# define TRACE_EVENT_PHASE_ASYNC_END ('F')
+# define TRACE_EVENT_PHASE_FLOW_BEGIN ('s')
+# define TRACE_EVENT_PHASE_FLOW_STEP ('t')
+# define TRACE_EVENT_PHASE_FLOW_END ('f')
+# define TRACE_EVENT_PHASE_METADATA ('M')
+# define TRACE_EVENT_PHASE_COUNTER ('C')
+
+// Flags for changing the behavior of TRACE_EVENT_API_ADD_TRACE_EVENT.
+# define TRACE_EVENT_FLAG_NONE (static_cast<unsigned char>(0))
+# define TRACE_EVENT_FLAG_COPY (static_cast<unsigned char>(1 << 0))
+# define TRACE_EVENT_FLAG_HAS_ID (static_cast<unsigned char>(1 << 1))
+# define TRACE_EVENT_FLAG_MANGLE_ID (static_cast<unsigned char>(1 << 2))
+
+namespace webrtc {
+namespace trace_event_internal {
+
+// Specify these values when the corresponding argument of AddTraceEvent is not
+// used.
+const int kZeroNumArgs = 0;
+const unsigned long long kNoEventId = 0;
+
+// TraceID encapsulates an ID that can either be an integer or pointer. Pointers
+// are mangled with the Process ID so that they are unlikely to collide when the
+// same pointer is used on different processes.
+class TraceID {
+ public:
+ class ForceMangle {
+ public:
+ explicit ForceMangle(unsigned long long id) : data_(id) {}
+ explicit ForceMangle(unsigned long id) : data_(id) {}
+ explicit ForceMangle(unsigned int id) : data_(id) {}
+ explicit ForceMangle(unsigned short id) : data_(id) {}
+ explicit ForceMangle(unsigned char id) : data_(id) {}
+ explicit ForceMangle(long long id)
+ : data_(static_cast<unsigned long long>(id)) {}
+ explicit ForceMangle(long id)
+ : data_(static_cast<unsigned long long>(id)) {}
+ explicit ForceMangle(int id) : data_(static_cast<unsigned long long>(id)) {}
+ explicit ForceMangle(short id)
+ : data_(static_cast<unsigned long long>(id)) {}
+ explicit ForceMangle(signed char id)
+ : data_(static_cast<unsigned long long>(id)) {}
+
+ unsigned long long data() const { return data_; }
+
+ private:
+ unsigned long long data_;
+ };
+
+ explicit TraceID(const void* id, unsigned char* flags)
+ : data_(
+ static_cast<unsigned long long>(reinterpret_cast<uintptr_t>(id))) {
+ *flags |= TRACE_EVENT_FLAG_MANGLE_ID;
+ }
+ explicit TraceID(ForceMangle id, unsigned char* flags) : data_(id.data()) {
+ *flags |= TRACE_EVENT_FLAG_MANGLE_ID;
+ }
+ explicit TraceID(unsigned long long id, unsigned char* flags) : data_(id) {
+ (void)flags;
+ }
+ explicit TraceID(unsigned long id, unsigned char* flags) : data_(id) {
+ (void)flags;
+ }
+ explicit TraceID(unsigned int id, unsigned char* flags) : data_(id) {
+ (void)flags;
+ }
+ explicit TraceID(unsigned short id, unsigned char* flags) : data_(id) {
+ (void)flags;
+ }
+ explicit TraceID(unsigned char id, unsigned char* flags) : data_(id) {
+ (void)flags;
+ }
+ explicit TraceID(long long id, unsigned char* flags)
+ : data_(static_cast<unsigned long long>(id)) {
+ (void)flags;
+ }
+ explicit TraceID(long id, unsigned char* flags)
+ : data_(static_cast<unsigned long long>(id)) {
+ (void)flags;
+ }
+ explicit TraceID(int id, unsigned char* flags)
+ : data_(static_cast<unsigned long long>(id)) {
+ (void)flags;
+ }
+ explicit TraceID(short id, unsigned char* flags)
+ : data_(static_cast<unsigned long long>(id)) {
+ (void)flags;
+ }
+ explicit TraceID(signed char id, unsigned char* flags)
+ : data_(static_cast<unsigned long long>(id)) {
+ (void)flags;
+ }
+
+ unsigned long long data() const { return data_; }
+
+ private:
+ unsigned long long data_;
+};
+
+// Simple union to store various types as unsigned long long.
+union TraceValueUnion {
+ bool as_bool;
+ unsigned long long as_uint;
+ long long as_int;
+ double as_double;
+ const void* as_pointer;
+ const char* as_string;
+};
+
+// Simple container for const char* that should be copied instead of retained.
+class TraceStringWithCopy {
+ public:
+ explicit TraceStringWithCopy(const char* str) : str_(str) {}
+ operator const char*() const { return str_; }
+
+ private:
+ const char* str_;
+};
+
+// Define SetTraceValue for each allowed type. It stores the type and
+// value in the return arguments. This allows this API to avoid declaring any
+// structures so that it is portable to third_party libraries.
+# define INTERNAL_DECLARE_SET_TRACE_VALUE(actual_type, union_member, \
+ value_type_id) \
+ static inline void SetTraceValue(actual_type arg, unsigned char* type, \
+ unsigned long long* value) { \
+ TraceValueUnion type_value; \
+ type_value.union_member = arg; \
+ *type = value_type_id; \
+ *value = type_value.as_uint; \
+ }
+// Simpler form for int types that can be safely casted.
+# define INTERNAL_DECLARE_SET_TRACE_VALUE_INT(actual_type, value_type_id) \
+ static inline void SetTraceValue(actual_type arg, unsigned char* type, \
+ unsigned long long* value) { \
+ *type = value_type_id; \
+ *value = static_cast<unsigned long long>(arg); \
+ }
+
+INTERNAL_DECLARE_SET_TRACE_VALUE_INT(unsigned long long, TRACE_VALUE_TYPE_UINT)
+INTERNAL_DECLARE_SET_TRACE_VALUE_INT(unsigned long, TRACE_VALUE_TYPE_UINT)
+INTERNAL_DECLARE_SET_TRACE_VALUE_INT(unsigned int, TRACE_VALUE_TYPE_UINT)
+INTERNAL_DECLARE_SET_TRACE_VALUE_INT(unsigned short, TRACE_VALUE_TYPE_UINT)
+INTERNAL_DECLARE_SET_TRACE_VALUE_INT(unsigned char, TRACE_VALUE_TYPE_UINT)
+INTERNAL_DECLARE_SET_TRACE_VALUE_INT(long long, TRACE_VALUE_TYPE_INT)
+INTERNAL_DECLARE_SET_TRACE_VALUE_INT(long, TRACE_VALUE_TYPE_INT)
+INTERNAL_DECLARE_SET_TRACE_VALUE_INT(int, TRACE_VALUE_TYPE_INT)
+INTERNAL_DECLARE_SET_TRACE_VALUE_INT(short, TRACE_VALUE_TYPE_INT)
+INTERNAL_DECLARE_SET_TRACE_VALUE_INT(signed char, TRACE_VALUE_TYPE_INT)
+INTERNAL_DECLARE_SET_TRACE_VALUE(bool, as_bool, TRACE_VALUE_TYPE_BOOL)
+INTERNAL_DECLARE_SET_TRACE_VALUE(double, as_double, TRACE_VALUE_TYPE_DOUBLE)
+INTERNAL_DECLARE_SET_TRACE_VALUE(const void*, as_pointer,
+ TRACE_VALUE_TYPE_POINTER)
+INTERNAL_DECLARE_SET_TRACE_VALUE(const char*, as_string,
+ TRACE_VALUE_TYPE_STRING)
+INTERNAL_DECLARE_SET_TRACE_VALUE(const TraceStringWithCopy&, as_string,
+ TRACE_VALUE_TYPE_COPY_STRING)
+
+# undef INTERNAL_DECLARE_SET_TRACE_VALUE
+# undef INTERNAL_DECLARE_SET_TRACE_VALUE_INT
+
+// std::string version of SetTraceValue so that trace arguments can be strings.
+static inline void SetTraceValue(const std::string& arg, unsigned char* type,
+ unsigned long long* value) {
+ TraceValueUnion type_value;
+ type_value.as_string = arg.c_str();
+ *type = TRACE_VALUE_TYPE_COPY_STRING;
+ *value = type_value.as_uint;
+}
+
+// These AddTraceEvent template functions are defined here instead of in the
+// macro, because the arg_values could be temporary objects, such as
+// std::string. In order to store pointers to the internal c_str and pass
+// through to the tracing API, the arg_values must live throughout
+// these procedures.
+
+static inline void AddTraceEvent(char phase,
+ const unsigned char* category_enabled,
+ const char* name, unsigned long long id,
+ unsigned char flags) {
+ TRACE_EVENT_API_ADD_TRACE_EVENT(phase, category_enabled, name, id,
+ kZeroNumArgs, nullptr, nullptr, nullptr,
+ flags);
+}
+
+template <class ARG1_TYPE>
+static inline void AddTraceEvent(char phase,
+ const unsigned char* category_enabled,
+ const char* name, unsigned long long id,
+ unsigned char flags, const char* arg1_name,
+ const ARG1_TYPE& arg1_val) {
+ const int num_args = 1;
+ unsigned char arg_types[1];
+ unsigned long long arg_values[1];
+ SetTraceValue(arg1_val, &arg_types[0], &arg_values[0]);
+ TRACE_EVENT_API_ADD_TRACE_EVENT(phase, category_enabled, name, id, num_args,
+ &arg1_name, arg_types, arg_values, flags);
+}
+
+template <class ARG1_TYPE, class ARG2_TYPE>
+static inline void AddTraceEvent(char phase,
+ const unsigned char* category_enabled,
+ const char* name, unsigned long long id,
+ unsigned char flags, const char* arg1_name,
+ const ARG1_TYPE& arg1_val,
+ const char* arg2_name,
+ const ARG2_TYPE& arg2_val) {
+ const int num_args = 2;
+ const char* arg_names[2] = {arg1_name, arg2_name};
+ unsigned char arg_types[2];
+ unsigned long long arg_values[2];
+ SetTraceValue(arg1_val, &arg_types[0], &arg_values[0]);
+ SetTraceValue(arg2_val, &arg_types[1], &arg_values[1]);
+ TRACE_EVENT_API_ADD_TRACE_EVENT(phase, category_enabled, name, id, num_args,
+ arg_names, arg_types, arg_values, flags);
+}
+
+// Used by TRACE_EVENTx macro. Do not use directly.
+class TraceEndOnScopeClose {
+ public:
+ // Note: members of data_ intentionally left uninitialized. See Initialize.
+ TraceEndOnScopeClose() : p_data_(nullptr) {}
+ ~TraceEndOnScopeClose() {
+ if (p_data_) AddEventIfEnabled();
+ }
+
+ void Initialize(const unsigned char* category_enabled, const char* name) {
+ data_.category_enabled = category_enabled;
+ data_.name = name;
+ p_data_ = &data_;
+ }
+
+ private:
+ // Add the end event if the category is still enabled.
+ void AddEventIfEnabled() {
+ // Only called when p_data_ is non-null.
+ if (*p_data_->category_enabled) {
+ TRACE_EVENT_API_ADD_TRACE_EVENT(TRACE_EVENT_PHASE_END,
+ p_data_->category_enabled, p_data_->name,
+ kNoEventId, kZeroNumArgs, nullptr,
+ nullptr, nullptr, TRACE_EVENT_FLAG_NONE);
+ }
+ }
+
+ // This Data struct workaround is to avoid initializing all the members
+ // in Data during construction of this object, since this object is always
+ // constructed, even when tracing is disabled. If the members of Data were
+ // members of this class instead, compiler warnings occur about potential
+ // uninitialized accesses.
+ struct Data {
+ const unsigned char* category_enabled;
+ const char* name;
+ };
+ Data* p_data_;
+ Data data_;
+};
+
+} // namespace trace_event_internal
+} // namespace webrtc
+#else
+
+////////////////////////////////////////////////////////////////////////////////
+// This section defines no-op alternatives to the tracing macros when
+// RTC_DISABLE_TRACE_EVENTS is defined.
+
+# define RTC_NOOP() \
+ do { \
+ } while (0)
+
+# define TRACE_STR_COPY(str) RTC_NOOP()
+
+# define TRACE_DISABLED_BY_DEFAULT(name) "disabled-by-default-" name
+
+# define TRACE_ID_MANGLE(id) 0
+
+# define TRACE_EVENT0(category, name) RTC_NOOP()
+# define TRACE_EVENT1(category, name, arg1_name, arg1_val) RTC_NOOP()
+# define TRACE_EVENT2(category, name, arg1_name, arg1_val, arg2_name, \
+ arg2_val) \
+ RTC_NOOP()
+
+# define TRACE_EVENT_INSTANT0(category, name) RTC_NOOP()
+# define TRACE_EVENT_INSTANT1(category, name, arg1_name, arg1_val) RTC_NOOP()
+
+# define TRACE_EVENT_INSTANT2(category, name, arg1_name, arg1_val, arg2_name, \
+ arg2_val) \
+ RTC_NOOP()
+
+# define TRACE_EVENT_COPY_INSTANT0(category, name) RTC_NOOP()
+# define TRACE_EVENT_COPY_INSTANT1(category, name, arg1_name, arg1_val) \
+ RTC_NOOP()
+# define TRACE_EVENT_COPY_INSTANT2(category, name, arg1_name, arg1_val, \
+ arg2_name, arg2_val) \
+ RTC_NOOP()
+
+# define TRACE_EVENT_BEGIN0(category, name) RTC_NOOP()
+# define TRACE_EVENT_BEGIN1(category, name, arg1_name, arg1_val) RTC_NOOP()
+# define TRACE_EVENT_BEGIN2(category, name, arg1_name, arg1_val, arg2_name, \
+ arg2_val) \
+ RTC_NOOP()
+# define TRACE_EVENT_COPY_BEGIN0(category, name) RTC_NOOP()
+# define TRACE_EVENT_COPY_BEGIN1(category, name, arg1_name, arg1_val) \
+ RTC_NOOP()
+# define TRACE_EVENT_COPY_BEGIN2(category, name, arg1_name, arg1_val, \
+ arg2_name, arg2_val) \
+ RTC_NOOP()
+
+# define TRACE_EVENT_END0(category, name) RTC_NOOP()
+# define TRACE_EVENT_END1(category, name, arg1_name, arg1_val) RTC_NOOP()
+# define TRACE_EVENT_END2(category, name, arg1_name, arg1_val, arg2_name, \
+ arg2_val) \
+ RTC_NOOP()
+# define TRACE_EVENT_COPY_END0(category, name) RTC_NOOP()
+# define TRACE_EVENT_COPY_END1(category, name, arg1_name, arg1_val) RTC_NOOP()
+# define TRACE_EVENT_COPY_END2(category, name, arg1_name, arg1_val, \
+ arg2_name, arg2_val) \
+ RTC_NOOP()
+
+# define TRACE_COUNTER1(category, name, value) RTC_NOOP()
+# define TRACE_COPY_COUNTER1(category, name, value) RTC_NOOP()
+
+# define TRACE_COUNTER2(category, name, value1_name, value1_val, value2_name, \
+ value2_val) \
+ RTC_NOOP()
+# define TRACE_COPY_COUNTER2(category, name, value1_name, value1_val, \
+ value2_name, value2_val) \
+ RTC_NOOP()
+
+# define TRACE_COUNTER_ID1(category, name, id, value) RTC_NOOP()
+# define TRACE_COPY_COUNTER_ID1(category, name, id, value) RTC_NOOP()
+
+# define TRACE_COUNTER_ID2(category, name, id, value1_name, value1_val, \
+ value2_name, value2_val) \
+ RTC_NOOP()
+# define TRACE_COPY_COUNTER_ID2(category, name, id, value1_name, value1_val, \
+ value2_name, value2_val) \
+ RTC_NOOP()
+
+# define TRACE_EVENT_ASYNC_BEGIN0(category, name, id) RTC_NOOP()
+# define TRACE_EVENT_ASYNC_BEGIN1(category, name, id, arg1_name, arg1_val) \
+ RTC_NOOP()
+# define TRACE_EVENT_ASYNC_BEGIN2(category, name, id, arg1_name, arg1_val, \
+ arg2_name, arg2_val) \
+ RTC_NOOP()
+# define TRACE_EVENT_COPY_ASYNC_BEGIN0(category, name, id) RTC_NOOP()
+# define TRACE_EVENT_COPY_ASYNC_BEGIN1(category, name, id, arg1_name, \
+ arg1_val) \
+ RTC_NOOP()
+# define TRACE_EVENT_COPY_ASYNC_BEGIN2(category, name, id, arg1_name, \
+ arg1_val, arg2_name, arg2_val) \
+ RTC_NOOP()
+
+# define TRACE_EVENT_ASYNC_STEP0(category, name, id, step) RTC_NOOP()
+# define TRACE_EVENT_ASYNC_STEP1(category, name, id, step, arg1_name, \
+ arg1_val) \
+ RTC_NOOP()
+# define TRACE_EVENT_COPY_ASYNC_STEP0(category, name, id, step) RTC_NOOP()
+# define TRACE_EVENT_COPY_ASYNC_STEP1(category, name, id, step, arg1_name, \
+ arg1_val) \
+ RTC_NOOP()
+
+# define TRACE_EVENT_ASYNC_END0(category, name, id) RTC_NOOP()
+# define TRACE_EVENT_ASYNC_END1(category, name, id, arg1_name, arg1_val) \
+ RTC_NOOP()
+# define TRACE_EVENT_ASYNC_END2(category, name, id, arg1_name, arg1_val, \
+ arg2_name, arg2_val) \
+ RTC_NOOP()
+# define TRACE_EVENT_COPY_ASYNC_END0(category, name, id) RTC_NOOP()
+# define TRACE_EVENT_COPY_ASYNC_END1(category, name, id, arg1_name, arg1_val) \
+ RTC_NOOP()
+# define TRACE_EVENT_COPY_ASYNC_END2(category, name, id, arg1_name, arg1_val, \
+ arg2_name, arg2_val) \
+ RTC_NOOP()
+
+# define TRACE_EVENT_FLOW_BEGIN0(category, name, id) RTC_NOOP()
+# define TRACE_EVENT_FLOW_BEGIN1(category, name, id, arg1_name, arg1_val) \
+ RTC_NOOP()
+# define TRACE_EVENT_FLOW_BEGIN2(category, name, id, arg1_name, arg1_val, \
+ arg2_name, arg2_val) \
+ RTC_NOOP()
+# define TRACE_EVENT_COPY_FLOW_BEGIN0(category, name, id) RTC_NOOP()
+# define TRACE_EVENT_COPY_FLOW_BEGIN1(category, name, id, arg1_name, \
+ arg1_val) \
+ RTC_NOOP()
+# define TRACE_EVENT_COPY_FLOW_BEGIN2(category, name, id, arg1_name, \
+ arg1_val, arg2_name, arg2_val) \
+ RTC_NOOP()
+
+# define TRACE_EVENT_FLOW_STEP0(category, name, id, step) RTC_NOOP()
+# define TRACE_EVENT_FLOW_STEP1(category, name, id, step, arg1_name, \
+ arg1_val) \
+ RTC_NOOP()
+# define TRACE_EVENT_COPY_FLOW_STEP0(category, name, id, step) RTC_NOOP()
+# define TRACE_EVENT_COPY_FLOW_STEP1(category, name, id, step, arg1_name, \
+ arg1_val) \
+ RTC_NOOP()
+
+# define TRACE_EVENT_FLOW_END0(category, name, id) RTC_NOOP()
+# define TRACE_EVENT_FLOW_END1(category, name, id, arg1_name, arg1_val) \
+ RTC_NOOP()
+# define TRACE_EVENT_FLOW_END2(category, name, id, arg1_name, arg1_val, \
+ arg2_name, arg2_val) \
+ RTC_NOOP()
+# define TRACE_EVENT_COPY_FLOW_END0(category, name, id) RTC_NOOP()
+# define TRACE_EVENT_COPY_FLOW_END1(category, name, id, arg1_name, arg1_val) \
+ RTC_NOOP()
+# define TRACE_EVENT_COPY_FLOW_END2(category, name, id, arg1_name, arg1_val, \
+ arg2_name, arg2_val) \
+ RTC_NOOP()
+
+# define TRACE_EVENT_API_GET_CATEGORY_ENABLED ""
+
+# define TRACE_EVENT_API_ADD_TRACE_EVENT RTC_NOOP()
+
+#endif // RTC_TRACE_EVENTS_ENABLED
+
+#endif // GECKO_TRACE_EVENT_H_
diff --git a/tools/profiler/public/MicroGeckoProfiler.h b/tools/profiler/public/MicroGeckoProfiler.h
new file mode 100644
index 0000000000..7b735e1eec
--- /dev/null
+++ b/tools/profiler/public/MicroGeckoProfiler.h
@@ -0,0 +1,130 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+// This contains things related to the Gecko profiler, for use in third_party
+// code. It is very minimal and is designed to be used by patching over
+// upstream code.
+// Only use the C ABI and guard C++ code with #ifdefs, don't pull anything from
+// Gecko, it must be possible to include the header file into any C++ codebase.
+
+#ifndef MICRO_GECKO_PROFILER
+#define MICRO_GECKO_PROFILER
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include <mozilla/Types.h>
+#include <stdio.h>
+
+#ifdef _WIN32
+# include <libloaderapi.h>
+#else
+# include <dlfcn.h>
+#endif
+
+extern MOZ_EXPORT void uprofiler_register_thread(const char* aName,
+ void* aGuessStackTop);
+
+extern MOZ_EXPORT void uprofiler_unregister_thread();
+
+extern MOZ_EXPORT void uprofiler_simple_event_marker(
+ const char* name, char phase, int num_args, const char** arg_names,
+ const unsigned char* arg_types, const unsigned long long* arg_values);
+#ifdef __cplusplus
+}
+
+struct AutoRegisterProfiler {
+ AutoRegisterProfiler(const char* name, char* stacktop) {
+ if (getenv("MOZ_UPROFILER_LOG_THREAD_CREATION")) {
+ printf("### UProfiler: new thread: '%s'\n", name);
+ }
+ uprofiler_register_thread(name, stacktop);
+ }
+ ~AutoRegisterProfiler() { uprofiler_unregister_thread(); }
+};
+#endif // __cplusplus
+
+void uprofiler_simple_event_marker(const char* name, char phase, int num_args,
+ const char** arg_names,
+ const unsigned char* arg_types,
+ const unsigned long long* arg_values);
+
+struct UprofilerFuncPtrs {
+ void (*register_thread)(const char* aName, void* aGuessStackTop);
+ void (*unregister_thread)();
+ void (*simple_event_marker)(const char* name, char phase, int num_args,
+ const char** arg_names,
+ const unsigned char* arg_types,
+ const unsigned long long* arg_values);
+};
+
+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Wunused-function"
+
+static void register_thread_noop(const char* aName, void* aGuessStackTop) {
+ /* no-op */
+}
+static void unregister_thread_noop() { /* no-op */
+}
+static void simple_event_marker_noop(const char* name, char phase, int num_args,
+ const char** arg_names,
+ const unsigned char* arg_types,
+ const unsigned long long* arg_values) {
+ /* no-op */
+}
+
+#pragma GCC diagnostic pop
+
+#if defined(_WIN32)
+# define UPROFILER_OPENLIB() GetModuleHandle(NULL)
+#else
+# define UPROFILER_OPENLIB() dlopen(NULL, RTLD_NOW)
+#endif
+
+#if defined(_WIN32)
+# define UPROFILER_GET_SYM(handle, sym) GetProcAddress(handle, sym)
+#else
+# define UPROFILER_GET_SYM(handle, sym) dlsym(handle, sym)
+#endif
+
+#if defined(_WIN32)
+# define UPROFILER_PRINT_ERROR(func) fprintf(stderr, "%s error\n", #func);
+#else
+# define UPROFILER_PRINT_ERROR(func) \
+ fprintf(stderr, "%s error: %s\n", #func, dlerror());
+#endif
+
+// Assumes that a variable of type UprofilerFuncPtrs, named uprofiler
+// is accessible in the scope
+#define UPROFILER_GET_FUNCTIONS() \
+ void* handle = UPROFILER_OPENLIB(); \
+ if (!handle) { \
+ UPROFILER_PRINT_ERROR(UPROFILER_OPENLIB); \
+ uprofiler.register_thread = register_thread_noop; \
+ uprofiler.unregister_thread = unregister_thread_noop; \
+ uprofiler.simple_event_marker = simple_event_marker_noop; \
+ } \
+ uprofiler.register_thread = \
+ UPROFILER_GET_SYM(handle, "uprofiler_register_thread"); \
+ if (!uprofiler.register_thread) { \
+ UPROFILER_PRINT_ERROR(uprofiler_unregister_thread); \
+ uprofiler.register_thread = register_thread_noop; \
+ } \
+ uprofiler.unregister_thread = \
+ UPROFILER_GET_SYM(handle, "uprofiler_unregister_thread"); \
+ if (!uprofiler.unregister_thread) { \
+ UPROFILER_PRINT_ERROR(uprofiler_unregister_thread); \
+ uprofiler.unregister_thread = unregister_thread_noop; \
+ } \
+ uprofiler.simple_event_marker = \
+ UPROFILER_GET_SYM(handle, "uprofiler_simple_event_marker"); \
+ if (!uprofiler.simple_event_marker) { \
+ UPROFILER_PRINT_ERROR(uprofiler_simple_event_marker); \
+ uprofiler.simple_event_marker = simple_event_marker_noop; \
+ }
+
+#endif // MICRO_GECKO_PROFILER
diff --git a/tools/profiler/public/ProfileAdditionalInformation.h b/tools/profiler/public/ProfileAdditionalInformation.h
new file mode 100644
index 0000000000..c4cc8697b0
--- /dev/null
+++ b/tools/profiler/public/ProfileAdditionalInformation.h
@@ -0,0 +1,90 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+// The Gecko Profiler is an always-on profiler that takes fast and low overhead
+// samples of the program execution using only userspace functionality for
+// portability. The goal of this module is to provide performance data in a
+// generic cross-platform way without requiring custom tools or kernel support.
+//
+// Samples are collected to form a timeline with optional timeline event
+// (markers) used for filtering. The samples include both native stacks and
+// platform-independent "label stack" frames.
+
+#ifndef ProfileAdditionalInformation_h
+#define ProfileAdditionalInformation_h
+
+#ifdef MOZ_GECKO_PROFILER
+# include "shared-libraries.h"
+#endif
+#include "js/Value.h"
+#include "nsString.h"
+
+namespace IPC {
+class MessageReader;
+class MessageWriter;
+template <typename T>
+struct ParamTraits;
+} // namespace IPC
+
+namespace mozilla {
+// This structure contains additional information gathered while generating the
+// profile json and iterating the buffer.
+struct ProfileGenerationAdditionalInformation {
+#ifdef MOZ_GECKO_PROFILER
+ ProfileGenerationAdditionalInformation() = default;
+ explicit ProfileGenerationAdditionalInformation(
+ const SharedLibraryInfo&& aSharedLibraries)
+ : mSharedLibraries(aSharedLibraries) {}
+
+ size_t SizeOf() const { return mSharedLibraries.SizeOf(); }
+
+ void Append(ProfileGenerationAdditionalInformation&& aOther) {
+ mSharedLibraries.AddAllSharedLibraries(aOther.mSharedLibraries);
+ }
+
+ void FinishGathering() { mSharedLibraries.DeduplicateEntries(); }
+
+ void ToJSValue(JSContext* aCx, JS::MutableHandle<JS::Value> aRetVal) const;
+
+ SharedLibraryInfo mSharedLibraries;
+#endif // MOZ_GECKO_PROFILER
+};
+
+struct ProfileAndAdditionalInformation {
+ ProfileAndAdditionalInformation() = default;
+ explicit ProfileAndAdditionalInformation(const nsCString&& aProfile)
+ : mProfile(aProfile) {}
+
+ ProfileAndAdditionalInformation(
+ const nsCString&& aProfile,
+ const ProfileGenerationAdditionalInformation&& aAdditionalInformation)
+ : mProfile(aProfile),
+ mAdditionalInformation(Some(aAdditionalInformation)) {}
+
+ size_t SizeOf() const {
+ size_t size = mProfile.Length();
+#ifdef MOZ_GECKO_PROFILER
+ if (mAdditionalInformation.isSome()) {
+ size += mAdditionalInformation->SizeOf();
+ }
+#endif
+ return size;
+ }
+
+ nsCString mProfile;
+ Maybe<ProfileGenerationAdditionalInformation> mAdditionalInformation;
+};
+} // namespace mozilla
+
+namespace IPC {
+template <>
+struct ParamTraits<mozilla::ProfileGenerationAdditionalInformation> {
+ typedef mozilla::ProfileGenerationAdditionalInformation paramType;
+
+ static void Write(MessageWriter* aWriter, const paramType& aParam);
+ static bool Read(MessageReader* aReader, paramType* aResult);
+};
+} // namespace IPC
+
+#endif // ProfileAdditionalInformation_h
diff --git a/tools/profiler/public/ProfileBufferEntrySerializationGeckoExtensions.h b/tools/profiler/public/ProfileBufferEntrySerializationGeckoExtensions.h
new file mode 100644
index 0000000000..1578bd2ddc
--- /dev/null
+++ b/tools/profiler/public/ProfileBufferEntrySerializationGeckoExtensions.h
@@ -0,0 +1,160 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef ProfileBufferEntrySerializationGeckoExtensions_h
+#define ProfileBufferEntrySerializationGeckoExtensions_h
+
+#include "mozilla/ProfileBufferEntrySerialization.h"
+
+#include "js/AllocPolicy.h"
+#include "js/Utility.h"
+#include "nsString.h"
+
+namespace mozilla {
+
+// ----------------------------------------------------------------------------
+// ns[C]String
+
+// nsString or nsCString contents are serialized as the number of bytes (encoded
+// as ULEB128) and all the characters in the string. The terminal '\0' is
+// omitted.
+// Make sure you write and read with the same character type!
+//
+// Usage: `nsCString s = ...; aEW.WriteObject(s);`
+template <typename CHAR>
+struct ProfileBufferEntryWriter::Serializer<nsTString<CHAR>> {
+ static Length Bytes(const nsTString<CHAR>& aS) {
+ const auto length = aS.Length();
+ return ProfileBufferEntryWriter::ULEB128Size(length) +
+ static_cast<Length>(length * sizeof(CHAR));
+ }
+
+ static void Write(ProfileBufferEntryWriter& aEW, const nsTString<CHAR>& aS) {
+ const auto length = aS.Length();
+ aEW.WriteULEB128(length);
+ // Copy the bytes from the string's buffer.
+ aEW.WriteBytes(aS.Data(), length * sizeof(CHAR));
+ }
+};
+
+template <typename CHAR>
+struct ProfileBufferEntryReader::Deserializer<nsTString<CHAR>> {
+ static void ReadInto(ProfileBufferEntryReader& aER, nsTString<CHAR>& aS) {
+ aS = Read(aER);
+ }
+
+ static nsTString<CHAR> Read(ProfileBufferEntryReader& aER) {
+ const Length length = aER.ReadULEB128<Length>();
+ nsTString<CHAR> s;
+ // BulkWrite is the most efficient way to copy bytes into the target string.
+ auto writerOrErr = s.BulkWrite(length, 0, true);
+ MOZ_RELEASE_ASSERT(!writerOrErr.isErr());
+
+ auto writer = writerOrErr.unwrap();
+
+ aER.ReadBytes(writer.Elements(), length * sizeof(CHAR));
+ writer.Finish(length, true);
+ return s;
+ }
+};
+
+// ----------------------------------------------------------------------------
+// nsAuto[C]String
+
+// nsAuto[C]String contents are serialized as the number of bytes (encoded as
+// ULEB128) and all the characters in the string. The terminal '\0' is omitted.
+// Make sure you write and read with the same character type!
+//
+// Usage: `nsAutoCString s = ...; aEW.WriteObject(s);`
+template <typename CHAR, size_t N>
+struct ProfileBufferEntryWriter::Serializer<nsTAutoStringN<CHAR, N>> {
+ static Length Bytes(const nsTAutoStringN<CHAR, N>& aS) {
+ const auto length = aS.Length();
+ return ProfileBufferEntryWriter::ULEB128Size(length) +
+ static_cast<Length>(length * sizeof(CHAR));
+ }
+
+ static void Write(ProfileBufferEntryWriter& aEW,
+ const nsTAutoStringN<CHAR, N>& aS) {
+ const auto length = aS.Length();
+ aEW.WriteULEB128(length);
+ // Copy the bytes from the string's buffer.
+ aEW.WriteBytes(aS.BeginReading(), length * sizeof(CHAR));
+ }
+};
+
+template <typename CHAR, size_t N>
+struct ProfileBufferEntryReader::Deserializer<nsTAutoStringN<CHAR, N>> {
+ static void ReadInto(ProfileBufferEntryReader& aER,
+ nsTAutoStringN<CHAR, N>& aS) {
+ aS = Read(aER);
+ }
+
+ static nsTAutoStringN<CHAR, N> Read(ProfileBufferEntryReader& aER) {
+ const auto length = aER.ReadULEB128<Length>();
+ nsTAutoStringN<CHAR, N> s;
+ // BulkWrite is the most efficient way to copy bytes into the target string.
+ auto writerOrErr = s.BulkWrite(length, 0, true);
+ MOZ_RELEASE_ASSERT(!writerOrErr.isErr());
+
+ auto writer = writerOrErr.unwrap();
+ aER.ReadBytes(writer.Elements(), length * sizeof(CHAR));
+ writer.Finish(length, true);
+ return s;
+ }
+};
+
+// ----------------------------------------------------------------------------
+// JS::UniqueChars
+
+// JS::UniqueChars contents are serialized as the number of bytes (encoded as
+// ULEB128) and all the characters in the string. The terminal '\0' is omitted.
+// Note: A nullptr pointer will be serialized like an empty string, so when
+// deserializing it will result in an allocated buffer only containing a
+// single null terminator.
+//
+// Usage: `JS::UniqueChars s = ...; aEW.WriteObject(s);`
+template <>
+struct ProfileBufferEntryWriter::Serializer<JS::UniqueChars> {
+ static Length Bytes(const JS::UniqueChars& aS) {
+ if (!aS) {
+ return ProfileBufferEntryWriter::ULEB128Size<Length>(0);
+ }
+ const auto len = static_cast<Length>(strlen(aS.get()));
+ return ProfileBufferEntryWriter::ULEB128Size(len) + len;
+ }
+
+ static void Write(ProfileBufferEntryWriter& aEW, const JS::UniqueChars& aS) {
+ if (!aS) {
+ aEW.WriteULEB128<Length>(0);
+ return;
+ }
+ const auto len = static_cast<Length>(strlen(aS.get()));
+ aEW.WriteULEB128(len);
+ aEW.WriteBytes(aS.get(), len);
+ }
+};
+
+template <>
+struct ProfileBufferEntryReader::Deserializer<JS::UniqueChars> {
+ static void ReadInto(ProfileBufferEntryReader& aER, JS::UniqueChars& aS) {
+ aS = Read(aER);
+ }
+
+ static JS::UniqueChars Read(ProfileBufferEntryReader& aER) {
+ const auto len = aER.ReadULEB128<Length>();
+ // Use the same allocation policy as JS_smprintf.
+ char* buffer =
+ static_cast<char*>(js::SystemAllocPolicy{}.pod_malloc<char>(len + 1));
+ aER.ReadBytes(buffer, len);
+ buffer[len] = '\0';
+ return JS::UniqueChars(buffer);
+ }
+};
+
+} // namespace mozilla
+
+#endif // ProfileBufferEntrySerializationGeckoExtensions_h
diff --git a/tools/profiler/public/ProfileJSONWriter.h b/tools/profiler/public/ProfileJSONWriter.h
new file mode 100644
index 0000000000..8d23d7a890
--- /dev/null
+++ b/tools/profiler/public/ProfileJSONWriter.h
@@ -0,0 +1,19 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef PROFILEJSONWRITER_H
+#define PROFILEJSONWRITER_H
+
+#include "mozilla/BaseProfileJSONWriter.h"
+
+using ChunkedJSONWriteFunc = mozilla::baseprofiler::ChunkedJSONWriteFunc;
+using JSONSchemaWriter = mozilla::baseprofiler::JSONSchemaWriter;
+using OStreamJSONWriteFunc = mozilla::baseprofiler::OStreamJSONWriteFunc;
+using SpliceableChunkedJSONWriter =
+ mozilla::baseprofiler::SpliceableChunkedJSONWriter;
+using SpliceableJSONWriter = mozilla::baseprofiler::SpliceableJSONWriter;
+using UniqueJSONStrings = mozilla::baseprofiler::UniqueJSONStrings;
+
+#endif // PROFILEJSONWRITER_H
diff --git a/tools/profiler/public/ProfilerBindings.h b/tools/profiler/public/ProfilerBindings.h
new file mode 100644
index 0000000000..096a860130
--- /dev/null
+++ b/tools/profiler/public/ProfilerBindings.h
@@ -0,0 +1,162 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+/* FFI functions for Profiler Rust API to call into profiler */
+
+#ifndef ProfilerBindings_h
+#define ProfilerBindings_h
+
+#include "mozilla/BaseProfilerMarkersPrerequisites.h"
+
+#include <cstddef>
+#include <stdint.h>
+
+namespace mozilla {
+class AutoProfilerLabel;
+class MarkerSchema;
+class MarkerTiming;
+class TimeStamp;
+enum class StackCaptureOptions;
+
+namespace baseprofiler {
+enum class ProfilingCategoryPair : uint32_t;
+class SpliceableJSONWriter;
+} // namespace baseprofiler
+
+} // namespace mozilla
+
+namespace JS {
+enum class ProfilingCategoryPair : uint32_t;
+} // namespace JS
+
+// Everything in here is safe to include unconditionally, implementations must
+// take !MOZ_GECKO_PROFILER into account.
+extern "C" {
+
+void gecko_profiler_register_thread(const char* aName);
+void gecko_profiler_unregister_thread();
+
+void gecko_profiler_construct_label(mozilla::AutoProfilerLabel* aAutoLabel,
+ JS::ProfilingCategoryPair aCategoryPair);
+void gecko_profiler_destruct_label(mozilla::AutoProfilerLabel* aAutoLabel);
+
+// Construct, clone and destruct the timestamp for profiler time.
+void gecko_profiler_construct_timestamp_now(mozilla::TimeStamp* aTimeStamp);
+void gecko_profiler_clone_timestamp(const mozilla::TimeStamp* aSrcTimeStamp,
+ mozilla::TimeStamp* aDestTimeStamp);
+void gecko_profiler_destruct_timestamp(mozilla::TimeStamp* aTimeStamp);
+
+// Addition and subtraction for timestamp.
+void gecko_profiler_add_timestamp(const mozilla::TimeStamp* aTimeStamp,
+ mozilla::TimeStamp* aDestTimeStamp,
+ double aMicroseconds);
+void gecko_profiler_subtract_timestamp(const mozilla::TimeStamp* aTimeStamp,
+ mozilla::TimeStamp* aDestTimeStamp,
+ double aMicroseconds);
+
+// Various MarkerTiming constructors and a destructor.
+void gecko_profiler_construct_marker_timing_instant_at(
+ mozilla::MarkerTiming* aMarkerTiming, const mozilla::TimeStamp* aTime);
+void gecko_profiler_construct_marker_timing_instant_now(
+ mozilla::MarkerTiming* aMarkerTiming);
+void gecko_profiler_construct_marker_timing_interval(
+ mozilla::MarkerTiming* aMarkerTiming, const mozilla::TimeStamp* aStartTime,
+ const mozilla::TimeStamp* aEndTime);
+void gecko_profiler_construct_marker_timing_interval_until_now_from(
+ mozilla::MarkerTiming* aMarkerTiming, const mozilla::TimeStamp* aStartTime);
+void gecko_profiler_construct_marker_timing_interval_start(
+ mozilla::MarkerTiming* aMarkerTiming, const mozilla::TimeStamp* aTime);
+void gecko_profiler_construct_marker_timing_interval_end(
+ mozilla::MarkerTiming* aMarkerTiming, const mozilla::TimeStamp* aTime);
+void gecko_profiler_destruct_marker_timing(
+ mozilla::MarkerTiming* aMarkerTiming);
+
+// MarkerSchema constructors and destructor.
+void gecko_profiler_construct_marker_schema(
+ mozilla::MarkerSchema* aMarkerSchema,
+ const mozilla::MarkerSchema::Location* aLocations, size_t aLength);
+void gecko_profiler_construct_marker_schema_with_special_front_end_location(
+ mozilla::MarkerSchema* aMarkerSchema);
+void gecko_profiler_destruct_marker_schema(
+ mozilla::MarkerSchema* aMarkerSchema);
+
+// MarkerSchema methods for adding labels.
+void gecko_profiler_marker_schema_set_chart_label(
+ mozilla::MarkerSchema* aSchema, const char* aLabel, size_t aLabelLength);
+void gecko_profiler_marker_schema_set_tooltip_label(
+ mozilla::MarkerSchema* aSchema, const char* aLabel, size_t aLabelLength);
+void gecko_profiler_marker_schema_set_table_label(
+ mozilla::MarkerSchema* aSchema, const char* aLabel, size_t aLabelLength);
+void gecko_profiler_marker_schema_set_all_labels(mozilla::MarkerSchema* aSchema,
+ const char* aLabel,
+ size_t aLabelLength);
+
+// MarkerSchema methods for adding key/key-label values.
+void gecko_profiler_marker_schema_add_key_format(
+ mozilla::MarkerSchema* aSchema, const char* aKey, size_t aKeyLength,
+ mozilla::MarkerSchema::Format aFormat);
+void gecko_profiler_marker_schema_add_key_label_format(
+ mozilla::MarkerSchema* aSchema, const char* aKey, size_t aKeyLength,
+ const char* aLabel, size_t aLabelLength,
+ mozilla::MarkerSchema::Format aFormat);
+void gecko_profiler_marker_schema_add_key_format_searchable(
+ mozilla::MarkerSchema* aSchema, const char* aKey, size_t aKeyLength,
+ mozilla::MarkerSchema::Format aFormat,
+ mozilla::MarkerSchema::Searchable aSearchable);
+void gecko_profiler_marker_schema_add_key_label_format_searchable(
+ mozilla::MarkerSchema* aSchema, const char* aKey, size_t aKeyLength,
+ const char* aLabel, size_t aLabelLength,
+ mozilla::MarkerSchema::Format aFormat,
+ mozilla::MarkerSchema::Searchable aSearchable);
+void gecko_profiler_marker_schema_add_static_label_value(
+ mozilla::MarkerSchema* aSchema, const char* aLabel, size_t aLabelLength,
+ const char* aValue, size_t aValueLength);
+
+// Stream MarkerSchema to SpliceableJSONWriter.
+void gecko_profiler_marker_schema_stream(
+ mozilla::baseprofiler::SpliceableJSONWriter* aWriter, const char* aName,
+ size_t aNameLength, mozilla::MarkerSchema* aMarkerSchema,
+ void* aStreamedNamesSet);
+
+// Various SpliceableJSONWriter methods to add properties.
+void gecko_profiler_json_writer_int_property(
+ mozilla::baseprofiler::SpliceableJSONWriter* aWriter, const char* aName,
+ size_t aNameLength, int64_t aValue);
+void gecko_profiler_json_writer_float_property(
+ mozilla::baseprofiler::SpliceableJSONWriter* aWriter, const char* aName,
+ size_t aNameLength, double aValue);
+void gecko_profiler_json_writer_bool_property(
+ mozilla::baseprofiler::SpliceableJSONWriter* aWriter, const char* aName,
+ size_t aNameLength, bool aValue);
+void gecko_profiler_json_writer_string_property(
+ mozilla::baseprofiler::SpliceableJSONWriter* aWriter, const char* aName,
+ size_t aNameLength, const char* aValue, size_t aValueLength);
+void gecko_profiler_json_writer_null_property(
+ mozilla::baseprofiler::SpliceableJSONWriter* aWriter, const char* aName,
+ size_t aNameLength);
+
+// Marker APIs.
+void gecko_profiler_add_marker_untyped(
+ const char* aName, size_t aNameLength,
+ mozilla::baseprofiler::ProfilingCategoryPair aCategoryPair,
+ mozilla::MarkerTiming* aMarkerTiming,
+ mozilla::StackCaptureOptions aStackCaptureOptions);
+void gecko_profiler_add_marker_text(
+ const char* aName, size_t aNameLength,
+ mozilla::baseprofiler::ProfilingCategoryPair aCategoryPair,
+ mozilla::MarkerTiming* aMarkerTiming,
+ mozilla::StackCaptureOptions aStackCaptureOptions, const char* aText,
+ size_t aTextLength);
+void gecko_profiler_add_marker(
+ const char* aName, size_t aNameLength,
+ mozilla::baseprofiler::ProfilingCategoryPair aCategoryPair,
+ mozilla::MarkerTiming* aMarkerTiming,
+ mozilla::StackCaptureOptions aStackCaptureOptions, uint8_t aMarkerTag,
+ const uint8_t* aPayload, size_t aPayloadSize);
+
+} // extern "C"
+
+#endif // ProfilerBindings_h
diff --git a/tools/profiler/public/ProfilerChild.h b/tools/profiler/public/ProfilerChild.h
new file mode 100644
index 0000000000..a781784aae
--- /dev/null
+++ b/tools/profiler/public/ProfilerChild.h
@@ -0,0 +1,106 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef ProfilerChild_h
+#define ProfilerChild_h
+
+#include "mozilla/BaseProfilerDetail.h"
+#include "mozilla/DataMutex.h"
+#include "mozilla/PProfilerChild.h"
+#include "mozilla/ProfileBufferControlledChunkManager.h"
+#include "mozilla/ProgressLogger.h"
+#include "mozilla/RefPtr.h"
+#include "ProfileAdditionalInformation.h"
+
+class nsIThread;
+struct PRThread;
+
+namespace mozilla {
+
+// The ProfilerChild actor is created in all processes except for the main
+// process. The corresponding ProfilerParent actor is created in the main
+// process, and it will notify us about profiler state changes and request
+// profiles from us.
+class ProfilerChild final : public PProfilerChild,
+ public mozilla::ipc::IShmemAllocator {
+ NS_INLINE_DECL_THREADSAFE_REFCOUNTING(ProfilerChild, final)
+
+ ProfilerChild();
+
+ // Collects and returns a profile.
+ // This method can be used to grab a profile just before PProfiler is torn
+ // down. The collected profile should then be sent through a different
+ // message channel that is guaranteed to stay open long enough.
+ ProfileAndAdditionalInformation GrabShutdownProfile();
+
+ void Destroy();
+
+ // This should be called regularly from outside of the profiler lock.
+ static void ProcessPendingUpdate();
+
+ static bool IsLockedOnCurrentThread();
+
+ private:
+ virtual ~ProfilerChild();
+
+ mozilla::ipc::IPCResult RecvStart(const ProfilerInitParams& params,
+ StartResolver&& aResolve) override;
+ mozilla::ipc::IPCResult RecvEnsureStarted(
+ const ProfilerInitParams& params,
+ EnsureStartedResolver&& aResolve) override;
+ mozilla::ipc::IPCResult RecvStop(StopResolver&& aResolve) override;
+ mozilla::ipc::IPCResult RecvPause(PauseResolver&& aResolve) override;
+ mozilla::ipc::IPCResult RecvResume(ResumeResolver&& aResolve) override;
+ mozilla::ipc::IPCResult RecvPauseSampling(
+ PauseSamplingResolver&& aResolve) override;
+ mozilla::ipc::IPCResult RecvResumeSampling(
+ ResumeSamplingResolver&& aResolve) override;
+ mozilla::ipc::IPCResult RecvWaitOnePeriodicSampling(
+ WaitOnePeriodicSamplingResolver&& aResolve) override;
+ mozilla::ipc::IPCResult RecvAwaitNextChunkManagerUpdate(
+ AwaitNextChunkManagerUpdateResolver&& aResolve) override;
+ mozilla::ipc::IPCResult RecvDestroyReleasedChunksAtOrBefore(
+ const TimeStamp& aTimeStamp) override;
+ mozilla::ipc::IPCResult RecvGatherProfile(
+ GatherProfileResolver&& aResolve) override;
+ mozilla::ipc::IPCResult RecvGetGatherProfileProgress(
+ GetGatherProfileProgressResolver&& aResolve) override;
+ mozilla::ipc::IPCResult RecvClearAllPages() override;
+
+ void ActorDestroy(ActorDestroyReason aActorDestroyReason) override;
+
+ FORWARD_SHMEM_ALLOCATOR_TO(PProfilerChild)
+
+ void SetupChunkManager();
+ void ResetChunkManager();
+ void ResolveChunkUpdate(
+ PProfilerChild::AwaitNextChunkManagerUpdateResolver& aResolve);
+ void ProcessChunkManagerUpdate(
+ ProfileBufferControlledChunkManager::Update&& aUpdate);
+
+ static void GatherProfileThreadFunction(void* already_AddRefedParameters);
+
+ nsCOMPtr<nsIThread> mThread;
+ bool mDestroyed;
+
+ ProfileBufferControlledChunkManager* mChunkManager = nullptr;
+ AwaitNextChunkManagerUpdateResolver mAwaitNextChunkManagerUpdateResolver;
+ ProfileBufferControlledChunkManager::Update mChunkManagerUpdate;
+
+ struct ProfilerChildAndUpdate {
+ RefPtr<ProfilerChild> mProfilerChild;
+ ProfileBufferControlledChunkManager::Update mUpdate;
+ };
+ static DataMutexBase<ProfilerChildAndUpdate,
+ baseprofiler::detail::BaseProfilerMutex>
+ sPendingChunkManagerUpdate;
+
+ RefPtr<ProgressLogger::SharedProgress> mGatherProfileProgress;
+};
+
+} // namespace mozilla
+
+#endif // ProfilerChild_h
diff --git a/tools/profiler/public/ProfilerCodeAddressService.h b/tools/profiler/public/ProfilerCodeAddressService.h
new file mode 100644
index 0000000000..9d75c363b3
--- /dev/null
+++ b/tools/profiler/public/ProfilerCodeAddressService.h
@@ -0,0 +1,52 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef ProfilerCodeAddressService_h
+#define ProfilerCodeAddressService_h
+
+#include "CodeAddressService.h"
+#include "nsTArray.h"
+
+namespace mozilla {
+
+// This SymbolTable struct, and the CompactSymbolTable struct in the
+// profiler rust module, have the exact same memory layout.
+// nsTArray and ThinVec are FFI-compatible, because the thin-vec crate is
+// being compiled with the "gecko-ffi" feature enabled.
+struct SymbolTable {
+ SymbolTable() = default;
+ SymbolTable(SymbolTable&& aOther) = default;
+
+ nsTArray<uint32_t> mAddrs;
+ nsTArray<uint32_t> mIndex;
+ nsTArray<uint8_t> mBuffer;
+};
+
+} // namespace mozilla
+
+/**
+ * Cache and look up function symbol names.
+ *
+ * We don't template this on AllocPolicy since we need to use nsTArray in
+ * SymbolTable above, which doesn't work with AllocPolicy. (We can't switch
+ * to Vector, as we would lose FFI compatibility with ThinVec.)
+ */
+class ProfilerCodeAddressService : public mozilla::CodeAddressService<> {
+ public:
+ // Like GetLocation, but only returns the symbol name.
+ bool GetFunction(const void* aPc, nsACString& aResult);
+
+ private:
+#if defined(XP_LINUX) || defined(XP_FREEBSD)
+ // Map of library names (owned by mLibraryStrings) to SymbolTables filled
+ // in by profiler_get_symbol_table.
+ mozilla::HashMap<const char*, mozilla::SymbolTable,
+ mozilla::DefaultHasher<const char*>, AllocPolicy>
+ mSymbolTables;
+#endif
+};
+
+#endif // ProfilerCodeAddressService_h
diff --git a/tools/profiler/public/ProfilerControl.h b/tools/profiler/public/ProfilerControl.h
new file mode 100644
index 0000000000..466d15eb69
--- /dev/null
+++ b/tools/profiler/public/ProfilerControl.h
@@ -0,0 +1,190 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+// APIs that control the lifetime of the profiler: Initialization, start, pause,
+// resume, stop, and shutdown.
+
+#ifndef ProfilerControl_h
+#define ProfilerControl_h
+
+#include "mozilla/BaseProfilerRAIIMacro.h"
+
+// Everything in here is also safe to include unconditionally, and only defines
+// empty macros if MOZ_GECKO_PROFILER is unset.
+// If your file only uses particular APIs (e.g., only markers), please consider
+// including only the needed headers instead of this one, to reduce compilation
+// dependencies.
+
+enum class IsFastShutdown {
+ No,
+ Yes,
+};
+
+#ifndef MOZ_GECKO_PROFILER
+
+// This file can be #included unconditionally. However, everything within this
+// file must be guarded by a #ifdef MOZ_GECKO_PROFILER, *except* for the
+// following macros and functions, which encapsulate the most common operations
+// and thus avoid the need for many #ifdefs.
+
+# define AUTO_PROFILER_INIT ::profiler_init_main_thread_id()
+# define AUTO_PROFILER_INIT2
+
+// Function stubs for when MOZ_GECKO_PROFILER is not defined.
+
+static inline void profiler_init(void* stackTop) {}
+
+static inline void profiler_shutdown(
+ IsFastShutdown aIsFastShutdown = IsFastShutdown::No) {}
+
+#else // !MOZ_GECKO_PROFILER
+
+# include "BaseProfiler.h"
+# include "mozilla/Attributes.h"
+# include "mozilla/Maybe.h"
+# include "mozilla/MozPromise.h"
+# include "mozilla/PowerOfTwo.h"
+# include "mozilla/Vector.h"
+
+//---------------------------------------------------------------------------
+// Start and stop the profiler
+//---------------------------------------------------------------------------
+
+static constexpr mozilla::PowerOfTwo32 PROFILER_DEFAULT_ENTRIES =
+ mozilla::baseprofiler::BASE_PROFILER_DEFAULT_ENTRIES;
+
+static constexpr mozilla::PowerOfTwo32 PROFILER_DEFAULT_STARTUP_ENTRIES =
+ mozilla::baseprofiler::BASE_PROFILER_DEFAULT_STARTUP_ENTRIES;
+
+# define PROFILER_DEFAULT_INTERVAL BASE_PROFILER_DEFAULT_INTERVAL
+# define PROFILER_MAX_INTERVAL BASE_PROFILER_MAX_INTERVAL
+
+# define PROFILER_DEFAULT_ACTIVE_TAB_ID 0
+
+// Initialize the profiler. If MOZ_PROFILER_STARTUP is set the profiler will
+// also be started. This call must happen before any other profiler calls
+// (except profiler_start(), which will call profiler_init() if it hasn't
+// already run).
+void profiler_init(void* stackTop);
+void profiler_init_threadmanager();
+
+// Call this as early as possible
+# define AUTO_PROFILER_INIT mozilla::AutoProfilerInit PROFILER_RAII
+// Call this after the nsThreadManager is Init()ed
+# define AUTO_PROFILER_INIT2 mozilla::AutoProfilerInit2 PROFILER_RAII
+
+// Clean up the profiler module, stopping it if required. This function may
+// also save a shutdown profile if requested. No profiler calls should happen
+// after this point and all profiling stack labels should have been popped.
+void profiler_shutdown(IsFastShutdown aIsFastShutdown = IsFastShutdown::No);
+
+// Start the profiler -- initializing it first if necessary -- with the
+// selected options. Stops and restarts the profiler if it is already active.
+// After starting the profiler is "active". The samples will be recorded in a
+// circular buffer.
+// "aCapacity" is the maximum number of 8-bytes entries in the profiler's
+// circular buffer.
+// "aInterval" the sampling interval, measured in millseconds.
+// "aFeatures" is the feature set. Features unsupported by this
+// platform/configuration are ignored.
+// "aFilters" is the list of thread filters. Threads that do not match any
+// of the filters are not profiled. A filter matches a thread if
+// (a) the thread name contains the filter as a case-insensitive
+// substring, or
+// (b) the filter is of the form "pid:<n>" where n is the process
+// id of the process that the thread is running in.
+// "aActiveTabID" BrowserId of the active browser screen's active tab.
+// It's being used to determine the profiled tab. It's "0" if
+// we failed to get the ID.
+// "aDuration" is the duration of entries in the profiler's circular buffer.
+// Returns as soon as this process' profiler has started, the returned promise
+// gets resolved when profilers in sub-processes (if any) have started.
+RefPtr<mozilla::GenericPromise> profiler_start(
+ mozilla::PowerOfTwo32 aCapacity, double aInterval, uint32_t aFeatures,
+ const char** aFilters, uint32_t aFilterCount, uint64_t aActiveTabID,
+ const mozilla::Maybe<double>& aDuration = mozilla::Nothing());
+
+// Stop the profiler and discard the profile without saving it. A no-op if the
+// profiler is inactive. After stopping the profiler is "inactive".
+// Returns as soon as this process' profiler has stopped, the returned promise
+// gets resolved when profilers in sub-processes (if any) have stopped.
+RefPtr<mozilla::GenericPromise> profiler_stop();
+
+// If the profiler is inactive, start it. If it's already active, restart it if
+// the requested settings differ from the current settings. Both the check and
+// the state change are performed while the profiler state is locked.
+// The only difference to profiler_start is that the current buffer contents are
+// not discarded if the profiler is already running with the requested settings.
+void profiler_ensure_started(
+ mozilla::PowerOfTwo32 aCapacity, double aInterval, uint32_t aFeatures,
+ const char** aFilters, uint32_t aFilterCount, uint64_t aActiveTabID,
+ const mozilla::Maybe<double>& aDuration = mozilla::Nothing());
+
+//---------------------------------------------------------------------------
+// Control the profiler
+//---------------------------------------------------------------------------
+
+// Pause and resume the profiler. No-ops if the profiler is inactive. While
+// paused the profile will not take any samples and will not record any data
+// into its buffers. The profiler remains fully initialized in this state.
+// Timeline markers will still be stored. This feature will keep JavaScript
+// profiling enabled, thus allowing toggling the profiler without invalidating
+// the JIT.
+// Returns as soon as this process' profiler has paused/resumed, the returned
+// promise gets resolved when profilers in sub-processes (if any) have
+// paused/resumed.
+RefPtr<mozilla::GenericPromise> profiler_pause();
+RefPtr<mozilla::GenericPromise> profiler_resume();
+
+// Only pause and resume the periodic sampling loop, including stack sampling,
+// counters, and profiling overheads.
+// Returns as soon as this process' profiler has paused/resumed sampling, the
+// returned promise gets resolved when profilers in sub-processes (if any) have
+// paused/resumed sampling.
+RefPtr<mozilla::GenericPromise> profiler_pause_sampling();
+RefPtr<mozilla::GenericPromise> profiler_resume_sampling();
+
+//---------------------------------------------------------------------------
+// Get information from the profiler
+//---------------------------------------------------------------------------
+
+// Get the params used to start the profiler. Returns 0 and an empty vector
+// (via outparams) if the profile is inactive. It's possible that the features
+// returned may be slightly different to those requested due to required
+// adjustments.
+void profiler_get_start_params(
+ int* aEntrySize, mozilla::Maybe<double>* aDuration, double* aInterval,
+ uint32_t* aFeatures,
+ mozilla::Vector<const char*, 0, mozilla::MallocAllocPolicy>* aFilters,
+ uint64_t* aActiveTabID);
+
+//---------------------------------------------------------------------------
+// RAII classes
+//---------------------------------------------------------------------------
+
+namespace mozilla {
+
+class MOZ_RAII AutoProfilerInit {
+ public:
+ explicit AutoProfilerInit() { profiler_init(this); }
+
+ ~AutoProfilerInit() { profiler_shutdown(); }
+
+ private:
+};
+
+class MOZ_RAII AutoProfilerInit2 {
+ public:
+ explicit AutoProfilerInit2() { profiler_init_threadmanager(); }
+
+ private:
+};
+
+} // namespace mozilla
+
+#endif // !MOZ_GECKO_PROFILER
+
+#endif // ProfilerControl_h
diff --git a/tools/profiler/public/ProfilerCounts.h b/tools/profiler/public/ProfilerCounts.h
new file mode 100644
index 0000000000..86f6cbfe4f
--- /dev/null
+++ b/tools/profiler/public/ProfilerCounts.h
@@ -0,0 +1,296 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef ProfilerCounts_h
+#define ProfilerCounts_h
+
+#ifndef MOZ_GECKO_PROFILER
+
+# define PROFILER_DEFINE_COUNT_TOTAL(label, category, description)
+# define PROFILER_DEFINE_COUNT(label, category, description)
+# define PROFILER_DEFINE_STATIC_COUNT_TOTAL(label, category, description)
+# define AUTO_PROFILER_TOTAL(label, count)
+# define AUTO_PROFILER_COUNT(label)
+# define AUTO_PROFILER_STATIC_COUNT(label, count)
+
+#else
+
+# include "mozilla/Atomics.h"
+
+class BaseProfilerCount;
+void profiler_add_sampled_counter(BaseProfilerCount* aCounter);
+void profiler_remove_sampled_counter(BaseProfilerCount* aCounter);
+
+typedef mozilla::Atomic<int64_t, mozilla::MemoryOrdering::Relaxed>
+ ProfilerAtomicSigned;
+typedef mozilla::Atomic<uint64_t, mozilla::MemoryOrdering::Relaxed>
+ ProfilerAtomicUnsigned;
+
+// Counter support
+// There are two types of counters:
+// 1) a simple counter which can be added to or subtracted from. This could
+// track the number of objects of a type, the number of calls to something
+// (reflow, JIT, etc).
+// 2) a combined counter which has the above, plus a number-of-calls counter
+// that is incremented by 1 for each call to modify the count. This provides
+// an optional source for a 'heatmap' of access. This can be used (for
+// example) to track the amount of memory allocated, and provide a heatmap of
+// memory operations (allocs/frees).
+//
+// Counters are sampled by the profiler once per sample-period. At this time,
+// all counters are global to the process. In the future, there might be more
+// versions with per-thread or other discriminators.
+//
+// Typical usage:
+// There are two ways to use counters: With heap-created counter objects,
+// or using macros. Note: the macros use statics, and will be slightly
+// faster/smaller, and you need to care about creating them before using
+// them. They're similar to the use-pattern for the other AUTO_PROFILER*
+// macros, but they do need the PROFILER_DEFINE* to be use to instantiate
+// the statics.
+//
+// PROFILER_DEFINE_COUNT(mything, "JIT", "Some JIT byte count")
+// ...
+// void foo() { ... AUTO_PROFILER_COUNT(mything, number_of_bytes_used); ... }
+//
+// or (to also get a heatmap)
+//
+// PROFILER_DEFINE_COUNT_TOTAL(mything, "JIT", "Some JIT byte count")
+// ...
+// void foo() {
+// ...
+// AUTO_PROFILER_COUNT_TOTAL(mything, number_of_bytes_generated);
+// ...
+// }
+//
+// To use without statics/macros:
+//
+// UniquePtr<ProfilerCounter> myCounter;
+// ...
+// myCounter =
+// MakeUnique<ProfilerCounter>("mything", "JIT", "Some JIT byte count"));
+// ...
+// void foo() { ... myCounter->Add(number_of_bytes_generated0; ... }
+
+class BaseProfilerCount {
+ public:
+ BaseProfilerCount(const char* aLabel, ProfilerAtomicSigned* aCounter,
+ ProfilerAtomicUnsigned* aNumber, const char* aCategory,
+ const char* aDescription)
+ : mLabel(aLabel),
+ mCategory(aCategory),
+ mDescription(aDescription),
+ mCounter(aCounter),
+ mNumber(aNumber) {
+# define COUNTER_CANARY 0xDEADBEEF
+# ifdef DEBUG
+ mCanary = COUNTER_CANARY;
+ mPrevNumber = 0;
+# endif
+ // Can't call profiler_* here since this may be non-xul-library
+ }
+
+ virtual ~BaseProfilerCount() {
+# ifdef DEBUG
+ mCanary = 0;
+# endif
+ }
+
+ struct CountSample {
+ int64_t count;
+ uint64_t number;
+ // This field indicates if the sample has already been consummed by a call
+ // to the Sample() method. This allows the profiler to discard duplicate
+ // samples if the counter sampling rate is lower than the profiler sampling
+ // rate. This can happen for example with some power meters that sample up
+ // to every 10ms.
+ // It should always be true when calling Sample() for the first time.
+ bool isSampleNew;
+ };
+ virtual CountSample Sample() {
+ MOZ_ASSERT(mCanary == COUNTER_CANARY);
+
+ CountSample result;
+ result.count = *mCounter;
+ result.number = mNumber ? *mNumber : 0;
+# ifdef DEBUG
+ MOZ_ASSERT(result.number >= mPrevNumber);
+ mPrevNumber = result.number;
+# endif
+ result.isSampleNew = true;
+ return result;
+ }
+
+ void Clear() {
+ *mCounter = 0;
+ // We don't reset *mNumber or mPrevNumber. We encode numbers as
+ // positive deltas, and currently we only care about the deltas (for
+ // e.g. heatmaps). If we ever need to clear mNumber as well, we can an
+ // alternative method (Reset()) to do so.
+ }
+
+ // We don't define ++ and Add() here, since the static defines directly
+ // increment the atomic counters, and the subclasses implement ++ and
+ // Add() directly.
+
+ // These typically are static strings (for example if you use the macros
+ // below)
+ const char* mLabel;
+ const char* mCategory;
+ const char* mDescription;
+ // We're ok with these being un-ordered in race conditions. These are
+ // pointers because we want to be able to use statics and increment them
+ // directly. Otherwise we could just have them inline, and not need the
+ // constructor args.
+ // These can be static globals (using the macros below), though they
+ // don't have to be - their lifetime must be longer than the use of them
+ // by the profiler (see profiler_add/remove_sampled_counter()). If you're
+ // using a lot of these, they probably should be allocated at runtime (see
+ // class ProfilerCountOnly below).
+ ProfilerAtomicSigned* mCounter;
+ ProfilerAtomicUnsigned* mNumber; // may be null
+
+# ifdef DEBUG
+ uint32_t mCanary;
+ uint64_t mPrevNumber; // value of number from the last Sample()
+# endif
+};
+
+// Designed to be allocated dynamically, and simply incremented with obj++
+// or obj->Add(n)
+class ProfilerCounter final : public BaseProfilerCount {
+ public:
+ ProfilerCounter(const char* aLabel, const char* aCategory,
+ const char* aDescription)
+ : BaseProfilerCount(aLabel, &mCounter, nullptr, aCategory, aDescription) {
+ // Assume we're in libxul
+ profiler_add_sampled_counter(this);
+ }
+
+ virtual ~ProfilerCounter() { profiler_remove_sampled_counter(this); }
+
+ BaseProfilerCount& operator++() {
+ Add(1);
+ return *this;
+ }
+
+ void Add(int64_t aNumber) { mCounter += aNumber; }
+
+ ProfilerAtomicSigned mCounter;
+};
+
+// Also keeps a heatmap (number of calls to ++/Add())
+class ProfilerCounterTotal final : public BaseProfilerCount {
+ public:
+ ProfilerCounterTotal(const char* aLabel, const char* aCategory,
+ const char* aDescription)
+ : BaseProfilerCount(aLabel, &mCounter, &mNumber, aCategory,
+ aDescription) {
+ // Assume we're in libxul
+ profiler_add_sampled_counter(this);
+ }
+
+ virtual ~ProfilerCounterTotal() { profiler_remove_sampled_counter(this); }
+
+ BaseProfilerCount& operator++() {
+ Add(1);
+ return *this;
+ }
+
+ void Add(int64_t aNumber) {
+ mCounter += aNumber;
+ mNumber++;
+ }
+
+ ProfilerAtomicSigned mCounter;
+ ProfilerAtomicUnsigned mNumber;
+};
+
+// Defines a counter that is sampled on each profiler tick, with a running
+// count (signed), and number-of-instances. Note that because these are two
+// independent Atomics, there is a possiblity that count will not include
+// the last call, but number of uses will. I think this is not worth
+// worrying about
+# define PROFILER_DEFINE_COUNT_TOTAL(label, category, description) \
+ ProfilerAtomicSigned profiler_count_##label(0); \
+ ProfilerAtomicUnsigned profiler_number_##label(0); \
+ const char profiler_category_##label[] = category; \
+ const char profiler_description_##label[] = description; \
+ mozilla::UniquePtr<BaseProfilerCount> AutoCount_##label;
+
+// This counts, but doesn't keep track of the number of calls to
+// AUTO_PROFILER_COUNT()
+# define PROFILER_DEFINE_COUNT(label, category, description) \
+ ProfilerAtomicSigned profiler_count_##label(0); \
+ const char profiler_category_##label[] = category; \
+ const char profiler_description_##label[] = description; \
+ mozilla::UniquePtr<BaseProfilerCount> AutoCount_##label;
+
+// This will create a static initializer if used, but avoids a possible
+// allocation.
+# define PROFILER_DEFINE_STATIC_COUNT_TOTAL(label, category, description) \
+ ProfilerAtomicSigned profiler_count_##label(0); \
+ ProfilerAtomicUnsigned profiler_number_##label(0); \
+ BaseProfilerCount AutoCount_##label(#label, &profiler_count_##label, \
+ &profiler_number_##label, category, \
+ description);
+
+// If we didn't care about static initializers, we could avoid the need for
+// a ptr to the BaseProfilerCount object.
+
+// XXX It would be better to do this without the if() and without the
+// theoretical race to set the UniquePtr (i.e. possible leak).
+# define AUTO_PROFILER_COUNT_TOTAL(label, count) \
+ do { \
+ profiler_number_##label++; /* do this first*/ \
+ profiler_count_##label += count; \
+ if (!AutoCount_##label) { \
+ /* Ignore that we could call this twice in theory, and that we leak \
+ * them \
+ */ \
+ AutoCount_##label.reset(new BaseProfilerCount( \
+ #label, &profiler_count_##label, &profiler_number_##label, \
+ profiler_category_##label, profiler_description_##label)); \
+ profiler_add_sampled_counter(AutoCount_##label.get()); \
+ } \
+ } while (0)
+
+# define AUTO_PROFILER_COUNT(label, count) \
+ do { \
+ profiler_count_##label += count; /* do this first*/ \
+ if (!AutoCount_##label) { \
+ /* Ignore that we could call this twice in theory, and that we leak \
+ * them \
+ */ \
+ AutoCount_##label.reset(new BaseProfilerCount( \
+ #label, nullptr, &profiler_number_##label, \
+ profiler_category_##label, profiler_description_##label)); \
+ profiler_add_sampled_counter(AutoCount_##label.get()); \
+ } \
+ } while (0)
+
+# define AUTO_PROFILER_STATIC_COUNT(label, count) \
+ do { \
+ profiler_number_##label++; /* do this first*/ \
+ profiler_count_##label += count; \
+ } while (0)
+
+// if we need to force the allocation
+# define AUTO_PROFILER_FORCE_ALLOCATION(label) \
+ do { \
+ if (!AutoCount_##label) { \
+ /* Ignore that we could call this twice in theory, and that we leak \
+ * them \
+ */ \
+ AutoCount_##label.reset(new BaseProfilerCount( \
+ #label, &profiler_count_##label, &profiler_number_##label, \
+ profiler_category_##label, profiler_description_##label)); \
+ } \
+ } while (0)
+
+#endif // !MOZ_GECKO_PROFILER
+
+#endif // ProfilerCounts_h
diff --git a/tools/profiler/public/ProfilerLabels.h b/tools/profiler/public/ProfilerLabels.h
new file mode 100644
index 0000000000..f05e357451
--- /dev/null
+++ b/tools/profiler/public/ProfilerLabels.h
@@ -0,0 +1,268 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+// This header contains all definitions related to profiler labels.
+// It is safe to include unconditionally, and only defines empty macros if
+// MOZ_GECKO_PROFILER is not set.
+
+#ifndef ProfilerLabels_h
+#define ProfilerLabels_h
+
+#include "mozilla/ProfilerThreadState.h"
+
+#include "js/ProfilingCategory.h"
+#include "js/ProfilingStack.h"
+#include "js/RootingAPI.h"
+#include "mozilla/Assertions.h"
+#include "mozilla/Atomics.h"
+#include "mozilla/Attributes.h"
+#include "mozilla/BaseProfilerRAIIMacro.h"
+#include "mozilla/Maybe.h"
+#include "mozilla/ProfilerThreadRegistration.h"
+#include "mozilla/ThreadLocal.h"
+#include "nsString.h"
+
+#include <stdint.h>
+
+struct JSContext;
+
+// Insert an RAII object in this scope to enter a label stack frame. Any
+// samples collected in this scope will contain this label in their stack.
+// The label argument must be a static C string. It is usually of the
+// form "ClassName::FunctionName". (Ideally we'd use the compiler to provide
+// that for us, but __func__ gives us the function name without the class
+// name.) If the label applies to only part of a function, you can qualify it
+// like this: "ClassName::FunctionName:PartName".
+//
+// Use AUTO_PROFILER_LABEL_DYNAMIC_* if you want to add additional / dynamic
+// information to the label stack frame.
+#define AUTO_PROFILER_LABEL(label, categoryPair) \
+ mozilla::AutoProfilerLabel PROFILER_RAII( \
+ label, nullptr, JS::ProfilingCategoryPair::categoryPair)
+
+// Similar to AUTO_PROFILER_LABEL, but that adds the RELEVANT_FOR_JS flag.
+#define AUTO_PROFILER_LABEL_RELEVANT_FOR_JS(label, categoryPair) \
+ mozilla::AutoProfilerLabel PROFILER_RAII( \
+ label, nullptr, JS::ProfilingCategoryPair::categoryPair, \
+ uint32_t(js::ProfilingStackFrame::Flags::RELEVANT_FOR_JS))
+
+// Similar to AUTO_PROFILER_LABEL, but with only one argument: the category
+// pair. The label string is taken from the category pair. This is convenient
+// for labels like AUTO_PROFILER_LABEL_CATEGORY_PAIR(GRAPHICS_LayerBuilding)
+// which would otherwise just repeat the string.
+#define AUTO_PROFILER_LABEL_CATEGORY_PAIR(categoryPair) \
+ mozilla::AutoProfilerLabel PROFILER_RAII( \
+ "", nullptr, JS::ProfilingCategoryPair::categoryPair, \
+ uint32_t( \
+ js::ProfilingStackFrame::Flags::LABEL_DETERMINED_BY_CATEGORY_PAIR))
+
+// Similar to AUTO_PROFILER_LABEL_CATEGORY_PAIR but adding the RELEVANT_FOR_JS
+// flag.
+#define AUTO_PROFILER_LABEL_CATEGORY_PAIR_RELEVANT_FOR_JS(categoryPair) \
+ mozilla::AutoProfilerLabel PROFILER_RAII( \
+ "", nullptr, JS::ProfilingCategoryPair::categoryPair, \
+ uint32_t( \
+ js::ProfilingStackFrame::Flags::LABEL_DETERMINED_BY_CATEGORY_PAIR) | \
+ uint32_t(js::ProfilingStackFrame::Flags::RELEVANT_FOR_JS))
+
+// Similar to AUTO_PROFILER_LABEL, but with an additional string. The inserted
+// RAII object stores the cStr pointer in a field; it does not copy the string.
+//
+// WARNING: This means that the string you pass to this macro needs to live at
+// least until the end of the current scope. Be careful using this macro with
+// ns[C]String; the other AUTO_PROFILER_LABEL_DYNAMIC_* macros below are
+// preferred because they avoid this problem.
+//
+// If the profiler samples the current thread and walks the label stack while
+// this RAII object is on the stack, it will copy the supplied string into the
+// profile buffer. So there's one string copy operation, and it happens at
+// sample time.
+//
+// Compare this to the plain AUTO_PROFILER_LABEL macro, which only accepts
+// literal strings: When the label stack frames generated by
+// AUTO_PROFILER_LABEL are sampled, no string copy needs to be made because the
+// profile buffer can just store the raw pointers to the literal strings.
+// Consequently, AUTO_PROFILER_LABEL frames take up considerably less space in
+// the profile buffer than AUTO_PROFILER_LABEL_DYNAMIC_* frames.
+#define AUTO_PROFILER_LABEL_DYNAMIC_CSTR(label, categoryPair, cStr) \
+ mozilla::AutoProfilerLabel PROFILER_RAII( \
+ label, cStr, JS::ProfilingCategoryPair::categoryPair)
+
+// Like AUTO_PROFILER_LABEL_DYNAMIC_CSTR, but with the NONSENSITIVE flag to
+// note that it does not contain sensitive information (so we can include it
+// in, for example, the BackgroundHangMonitor)
+#define AUTO_PROFILER_LABEL_DYNAMIC_CSTR_NONSENSITIVE(label, categoryPair, \
+ cStr) \
+ mozilla::AutoProfilerLabel PROFILER_RAII( \
+ label, cStr, JS::ProfilingCategoryPair::categoryPair, \
+ uint32_t(js::ProfilingStackFrame::Flags::NONSENSITIVE))
+
+// Similar to AUTO_PROFILER_LABEL_DYNAMIC_CSTR, but takes an nsACString.
+//
+// Note: The use of the Maybe<>s ensures the scopes for the dynamic string and
+// the AutoProfilerLabel are appropriate, while also not incurring the runtime
+// cost of the string assignment unless the profiler is active. Therefore,
+// unlike AUTO_PROFILER_LABEL and AUTO_PROFILER_LABEL_DYNAMIC_CSTR, this macro
+// doesn't push/pop a label when the profiler is inactive.
+#define AUTO_PROFILER_LABEL_DYNAMIC_NSCSTRING(label, categoryPair, nsCStr) \
+ mozilla::Maybe<nsAutoCString> autoCStr; \
+ mozilla::Maybe<mozilla::AutoProfilerLabel> raiiObjectNsCString; \
+ if (profiler_is_active()) { \
+ autoCStr.emplace(nsCStr); \
+ raiiObjectNsCString.emplace(label, autoCStr->get(), \
+ JS::ProfilingCategoryPair::categoryPair); \
+ }
+
+#define AUTO_PROFILER_LABEL_DYNAMIC_NSCSTRING_RELEVANT_FOR_JS( \
+ label, categoryPair, nsCStr) \
+ mozilla::Maybe<nsAutoCString> autoCStr; \
+ mozilla::Maybe<mozilla::AutoProfilerLabel> raiiObjectNsCString; \
+ if (profiler_is_active()) { \
+ autoCStr.emplace(nsCStr); \
+ raiiObjectNsCString.emplace( \
+ label, autoCStr->get(), JS::ProfilingCategoryPair::categoryPair, \
+ uint32_t(js::ProfilingStackFrame::Flags::RELEVANT_FOR_JS)); \
+ }
+
+// Match the conditions for MOZ_ENABLE_BACKGROUND_HANG_MONITOR
+#if defined(NIGHTLY_BUILD) && !defined(MOZ_DEBUG) && !defined(MOZ_TSAN) && \
+ !defined(MOZ_ASAN)
+# define SHOULD_CREATE_ALL_NONSENSITIVE_LABEL_FRAMES true
+#else
+# define SHOULD_CREATE_ALL_NONSENSITIVE_LABEL_FRAMES profiler_is_active()
+#endif
+
+// See note above AUTO_PROFILER_LABEL_DYNAMIC_CSTR_NONSENSITIVE
+#define AUTO_PROFILER_LABEL_DYNAMIC_NSCSTRING_NONSENSITIVE( \
+ label, categoryPair, nsCStr) \
+ mozilla::Maybe<nsAutoCString> autoCStr; \
+ mozilla::Maybe<mozilla::AutoProfilerLabel> raiiObjectNsCString; \
+ if (SHOULD_CREATE_ALL_NONSENSITIVE_LABEL_FRAMES) { \
+ autoCStr.emplace(nsCStr); \
+ raiiObjectNsCString.emplace( \
+ label, autoCStr->get(), JS::ProfilingCategoryPair::categoryPair, \
+ uint32_t(js::ProfilingStackFrame::Flags::NONSENSITIVE)); \
+ }
+
+// Similar to AUTO_PROFILER_LABEL_DYNAMIC_CSTR, but takes an nsString that is
+// is lossily converted to an ASCII string.
+//
+// Note: The use of the Maybe<>s ensures the scopes for the converted dynamic
+// string and the AutoProfilerLabel are appropriate, while also not incurring
+// the runtime cost of the string conversion unless the profiler is active.
+// Therefore, unlike AUTO_PROFILER_LABEL and AUTO_PROFILER_LABEL_DYNAMIC_CSTR,
+// this macro doesn't push/pop a label when the profiler is inactive.
+#define AUTO_PROFILER_LABEL_DYNAMIC_LOSSY_NSSTRING(label, categoryPair, nsStr) \
+ mozilla::Maybe<NS_LossyConvertUTF16toASCII> asciiStr; \
+ mozilla::Maybe<mozilla::AutoProfilerLabel> raiiObjectLossyNsString; \
+ if (profiler_is_active()) { \
+ asciiStr.emplace(nsStr); \
+ raiiObjectLossyNsString.emplace(label, asciiStr->get(), \
+ JS::ProfilingCategoryPair::categoryPair); \
+ }
+
+// Similar to AUTO_PROFILER_LABEL, but accepting a JSContext* parameter, and a
+// no-op if the profiler is disabled.
+// Used to annotate functions for which overhead in the range of nanoseconds is
+// noticeable. It avoids overhead from the TLS lookup because it can get the
+// ProfilingStack from the JS context, and avoids almost all overhead in the
+// case where the profiler is disabled.
+#define AUTO_PROFILER_LABEL_FAST(label, categoryPair, ctx) \
+ mozilla::AutoProfilerLabel PROFILER_RAII( \
+ ctx, label, nullptr, JS::ProfilingCategoryPair::categoryPair)
+
+// Similar to AUTO_PROFILER_LABEL_FAST, but also takes an extra string and an
+// additional set of flags. The flags parameter should carry values from the
+// js::ProfilingStackFrame::Flags enum.
+#define AUTO_PROFILER_LABEL_DYNAMIC_FAST(label, dynamicString, categoryPair, \
+ ctx, flags) \
+ mozilla::AutoProfilerLabel PROFILER_RAII( \
+ ctx, label, dynamicString, JS::ProfilingCategoryPair::categoryPair, \
+ flags)
+
+namespace mozilla {
+
+#ifndef MOZ_GECKO_PROFILER
+
+class MOZ_RAII AutoProfilerLabel {
+ public:
+ // This is the AUTO_PROFILER_LABEL and AUTO_PROFILER_LABEL_DYNAMIC variant.
+ AutoProfilerLabel(const char* aLabel, const char* aDynamicString,
+ JS::ProfilingCategoryPair aCategoryPair,
+ uint32_t aFlags = 0) {}
+
+ // This is the AUTO_PROFILER_LABEL_FAST variant.
+ AutoProfilerLabel(JSContext* aJSContext, const char* aLabel,
+ const char* aDynamicString,
+ JS::ProfilingCategoryPair aCategoryPair, uint32_t aFlags) {}
+
+ ~AutoProfilerLabel() {}
+};
+
+#else // !MOZ_GECKO_PROFILER
+
+// This class creates a non-owning ProfilingStack reference. Objects of this
+// class are stack-allocated, and so exist within a thread, and are thus bounded
+// by the lifetime of the thread, which ensures that the references held can't
+// be used after the ProfilingStack is destroyed.
+class MOZ_RAII AutoProfilerLabel {
+ public:
+ // This is the AUTO_PROFILER_LABEL and AUTO_PROFILER_LABEL_DYNAMIC variant.
+ AutoProfilerLabel(const char* aLabel, const char* aDynamicString,
+ JS::ProfilingCategoryPair aCategoryPair,
+ uint32_t aFlags = 0) {
+ // Get the ProfilingStack from TLS.
+ ProfilingStack* profilingStack =
+ profiler::ThreadRegistration::WithOnThreadRefOr(
+ [](profiler::ThreadRegistration::OnThreadRef aThread) {
+ return &aThread.UnlockedConstReaderAndAtomicRWRef()
+ .ProfilingStackRef();
+ },
+ nullptr);
+ Push(profilingStack, aLabel, aDynamicString, aCategoryPair, aFlags);
+ }
+
+ // This is the AUTO_PROFILER_LABEL_FAST variant. It retrieves the
+ // ProfilingStack from the JSContext and does nothing if the profiler is
+ // inactive.
+ AutoProfilerLabel(JSContext* aJSContext, const char* aLabel,
+ const char* aDynamicString,
+ JS::ProfilingCategoryPair aCategoryPair, uint32_t aFlags) {
+ Push(js::GetContextProfilingStackIfEnabled(aJSContext), aLabel,
+ aDynamicString, aCategoryPair, aFlags);
+ }
+
+ void Push(ProfilingStack* aProfilingStack, const char* aLabel,
+ const char* aDynamicString, JS::ProfilingCategoryPair aCategoryPair,
+ uint32_t aFlags = 0) {
+ // This function runs both on and off the main thread.
+
+ mProfilingStack = aProfilingStack;
+ if (mProfilingStack) {
+ mProfilingStack->pushLabelFrame(aLabel, aDynamicString, this,
+ aCategoryPair, aFlags);
+ }
+ }
+
+ ~AutoProfilerLabel() {
+ // This function runs both on and off the main thread.
+
+ if (mProfilingStack) {
+ mProfilingStack->pop();
+ }
+ }
+
+ private:
+ // We save a ProfilingStack pointer in the ctor so we don't have to redo the
+ // TLS lookup in the dtor.
+ ProfilingStack* mProfilingStack;
+};
+
+#endif // !MOZ_GECKO_PROFILER
+
+} // namespace mozilla
+
+#endif // ProfilerLabels_h
diff --git a/tools/profiler/public/ProfilerMarkerTypes.h b/tools/profiler/public/ProfilerMarkerTypes.h
new file mode 100644
index 0000000000..0868c70e30
--- /dev/null
+++ b/tools/profiler/public/ProfilerMarkerTypes.h
@@ -0,0 +1,41 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef ProfilerMarkerTypes_h
+#define ProfilerMarkerTypes_h
+
+// This header contains common marker type definitions that rely on xpcom.
+//
+// It #include's "mozilla/BaseProfilerMarkerTypess.h" and "ProfilerMarkers.h",
+// see these files for more marker types, how to define other marker types, and
+// how to add markers to the profiler buffers.
+
+// !!! /!\ WORK IN PROGRESS /!\ !!!
+// This file contains draft marker definitions, but most are not used yet.
+// Further work is needed to complete these definitions, and use them to convert
+// existing PROFILER_ADD_MARKER calls. See meta bug 1661394.
+
+#include "mozilla/BaseProfilerMarkerTypes.h"
+#include "mozilla/ProfilerMarkers.h"
+#include "js/ProfilingFrameIterator.h"
+#include "js/Utility.h"
+#include "mozilla/Preferences.h"
+#include "mozilla/ServoTraversalStatistics.h"
+
+namespace geckoprofiler::markers {
+
+// Import some common markers from mozilla::baseprofiler::markers.
+using MediaSampleMarker = mozilla::baseprofiler::markers::MediaSampleMarker;
+using VideoFallingBehindMarker =
+ mozilla::baseprofiler::markers::VideoFallingBehindMarker;
+using ContentBuildMarker = mozilla::baseprofiler::markers::ContentBuildMarker;
+using MediaEngineMarker = mozilla::baseprofiler::markers::MediaEngineMarker;
+using MediaEngineTextMarker =
+ mozilla::baseprofiler::markers::MediaEngineTextMarker;
+
+} // namespace geckoprofiler::markers
+
+#endif // ProfilerMarkerTypes_h
diff --git a/tools/profiler/public/ProfilerMarkers.h b/tools/profiler/public/ProfilerMarkers.h
new file mode 100644
index 0000000000..ca53c3f189
--- /dev/null
+++ b/tools/profiler/public/ProfilerMarkers.h
@@ -0,0 +1,355 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+// Markers are useful to delimit something important happening such as the first
+// paint. Unlike labels, which are only recorded in the profile buffer if a
+// sample is collected while the label is on the label stack, markers will
+// always be recorded in the profile buffer.
+//
+// This header contains definitions necessary to add markers to the Gecko
+// Profiler buffer.
+//
+// It #include's "mozilla/BaseProfilerMarkers.h", see that header for base
+// definitions necessary to create marker types.
+//
+// If common marker types are needed, #include "ProfilerMarkerTypes.h" instead.
+//
+// But if you want to create your own marker type locally, you can #include this
+// header only; look at ProfilerMarkerTypes.h for examples of how to define
+// types.
+//
+// To then record markers:
+// - Use `baseprofiler::AddMarker(...)` from mozglue or other libraries that are
+// outside of xul, especially if they may happen outside of xpcom's lifetime
+// (typically startup, shutdown, or tests).
+// - Otherwise #include "ProfilerMarkers.h" instead, and use
+// `profiler_add_marker(...)`.
+// See these functions for more details.
+
+#ifndef ProfilerMarkers_h
+#define ProfilerMarkers_h
+
+#include "mozilla/BaseProfilerMarkers.h"
+#include "mozilla/ProfilerMarkersDetail.h"
+#include "mozilla/ProfilerLabels.h"
+#include "nsJSUtils.h" // for nsJSUtils::GetCurrentlyRunningCodeInnerWindowID
+
+class nsIDocShell;
+
+namespace geckoprofiler::markers::detail {
+// Please do not use anything from the detail namespace outside the profiler.
+
+#ifdef MOZ_GECKO_PROFILER
+mozilla::Maybe<uint64_t> profiler_get_inner_window_id_from_docshell(
+ nsIDocShell* aDocshell);
+#else
+inline mozilla::Maybe<uint64_t> profiler_get_inner_window_id_from_docshell(
+ nsIDocShell* aDocshell) {
+ return mozilla::Nothing();
+}
+#endif // MOZ_GECKO_PROFILER
+
+} // namespace geckoprofiler::markers::detail
+
+// This is a helper function to get the Inner Window ID from DocShell but it's
+// not a recommended method to get it and it's not encouraged to use this
+// function. If there is a computed inner window ID, `window`, or `Document`
+// available in the call site, please use them. Use this function as a last
+// resort.
+inline mozilla::MarkerInnerWindowId MarkerInnerWindowIdFromDocShell(
+ nsIDocShell* aDocshell) {
+ mozilla::Maybe<uint64_t> id = geckoprofiler::markers::detail::
+ profiler_get_inner_window_id_from_docshell(aDocshell);
+ if (!id) {
+ return mozilla::MarkerInnerWindowId::NoId();
+ }
+ return mozilla::MarkerInnerWindowId(*id);
+}
+
+// This is a helper function to get the Inner Window ID from a JS Context but
+// it's not a recommended method to get it and it's not encouraged to use this
+// function. If there is a computed inner window ID, `window`, or `Document`
+// available in the call site, please use them. Use this function as a last
+// resort.
+inline mozilla::MarkerInnerWindowId MarkerInnerWindowIdFromJSContext(
+ JSContext* aContext) {
+ return mozilla::MarkerInnerWindowId(
+ nsJSUtils::GetCurrentlyRunningCodeInnerWindowID(aContext));
+}
+
+// Bring category names from Base Profiler into the geckoprofiler::category
+// namespace, for consistency with other Gecko Profiler identifiers.
+namespace geckoprofiler::category {
+using namespace ::mozilla::baseprofiler::category;
+}
+
+#ifdef MOZ_GECKO_PROFILER
+// Forward-declaration. TODO: Move to more common header, see bug 1681416.
+bool profiler_capture_backtrace_into(
+ mozilla::ProfileChunkedBuffer& aChunkedBuffer,
+ mozilla::StackCaptureOptions aCaptureOptions);
+
+// Add a marker to a given buffer. `AddMarker()` and related macros should be
+// used in most cases, see below for more information about them and the
+// paramters; This function may be useful when markers need to be recorded in a
+// local buffer outside of the main profiler buffer.
+template <typename MarkerType, typename... PayloadArguments>
+mozilla::ProfileBufferBlockIndex AddMarkerToBuffer(
+ mozilla::ProfileChunkedBuffer& aBuffer,
+ const mozilla::ProfilerString8View& aName,
+ const mozilla::MarkerCategory& aCategory, mozilla::MarkerOptions&& aOptions,
+ MarkerType aMarkerType, const PayloadArguments&... aPayloadArguments) {
+ AUTO_PROFILER_LABEL("AddMarkerToBuffer", PROFILER);
+ mozilla::Unused << aMarkerType; // Only the empty object type is useful.
+ return mozilla::base_profiler_markers_detail::AddMarkerToBuffer<MarkerType>(
+ aBuffer, aName, aCategory, std::move(aOptions),
+ profiler_active_without_feature(ProfilerFeature::NoMarkerStacks)
+ ? ::profiler_capture_backtrace_into
+ : nullptr,
+ aPayloadArguments...);
+}
+
+// Add a marker (without payload) to a given buffer.
+inline mozilla::ProfileBufferBlockIndex AddMarkerToBuffer(
+ mozilla::ProfileChunkedBuffer& aBuffer,
+ const mozilla::ProfilerString8View& aName,
+ const mozilla::MarkerCategory& aCategory,
+ mozilla::MarkerOptions&& aOptions = {}) {
+ return AddMarkerToBuffer(aBuffer, aName, aCategory, std::move(aOptions),
+ mozilla::baseprofiler::markers::NoPayload{});
+}
+#endif
+
+[[nodiscard]] inline bool profiler_thread_is_being_profiled_for_markers() {
+ return profiler_thread_is_being_profiled(ThreadProfilingFeatures::Markers);
+}
+
+[[nodiscard]] inline bool profiler_thread_is_being_profiled_for_markers(
+ const ProfilerThreadId& aThreadId) {
+ return profiler_thread_is_being_profiled(aThreadId,
+ ThreadProfilingFeatures::Markers);
+}
+
+// Add a marker to the Gecko Profiler buffer.
+// - aName: Main name of this marker.
+// - aCategory: Category for this marker.
+// - aOptions: Optional settings (such as timing, inner window id,
+// backtrace...), see `MarkerOptions` for details.
+// - aMarkerType: Empty object that specifies the type of marker.
+// - aPayloadArguments: Arguments expected by this marker type's
+// ` StreamJSONMarkerData` function.
+template <typename MarkerType, typename... PayloadArguments>
+mozilla::ProfileBufferBlockIndex profiler_add_marker(
+ const mozilla::ProfilerString8View& aName,
+ const mozilla::MarkerCategory& aCategory, mozilla::MarkerOptions&& aOptions,
+ MarkerType aMarkerType, const PayloadArguments&... aPayloadArguments) {
+#ifndef MOZ_GECKO_PROFILER
+ return {};
+#else
+ if (!profiler_thread_is_being_profiled_for_markers(
+ aOptions.ThreadId().ThreadId())) {
+ return {};
+ }
+ AUTO_PROFILER_LABEL("profiler_add_marker", PROFILER);
+ return ::AddMarkerToBuffer(profiler_get_core_buffer(), aName, aCategory,
+ std::move(aOptions), aMarkerType,
+ aPayloadArguments...);
+#endif
+}
+
+// Add a marker (without payload) to the Gecko Profiler buffer.
+inline mozilla::ProfileBufferBlockIndex profiler_add_marker(
+ const mozilla::ProfilerString8View& aName,
+ const mozilla::MarkerCategory& aCategory,
+ mozilla::MarkerOptions&& aOptions = {}) {
+ return profiler_add_marker(aName, aCategory, std::move(aOptions),
+ mozilla::baseprofiler::markers::NoPayload{});
+}
+
+// Same as `profiler_add_marker()` (without payload). This macro is safe to use
+// even if MOZ_GECKO_PROFILER is not #defined.
+#define PROFILER_MARKER_UNTYPED(markerName, categoryName, ...) \
+ do { \
+ AUTO_PROFILER_STATS(PROFILER_MARKER_UNTYPED); \
+ ::profiler_add_marker(markerName, ::geckoprofiler::category::categoryName, \
+ ##__VA_ARGS__); \
+ } while (false)
+
+// Same as `profiler_add_marker()` (with payload). This macro is safe to use
+// even if MOZ_GECKO_PROFILER is not #defined.
+#define PROFILER_MARKER(markerName, categoryName, options, MarkerType, ...) \
+ do { \
+ AUTO_PROFILER_STATS(PROFILER_MARKER_with_##MarkerType); \
+ ::profiler_add_marker(markerName, ::geckoprofiler::category::categoryName, \
+ options, ::geckoprofiler::markers::MarkerType{}, \
+ ##__VA_ARGS__); \
+ } while (false)
+
+namespace geckoprofiler::markers {
+// Most common marker types. Others are in ProfilerMarkerTypes.h.
+using TextMarker = ::mozilla::baseprofiler::markers::TextMarker;
+using Tracing = mozilla::baseprofiler::markers::Tracing;
+} // namespace geckoprofiler::markers
+
+// Add a text marker. This macro is safe to use even if MOZ_GECKO_PROFILER is
+// not #defined.
+#define PROFILER_MARKER_TEXT(markerName, categoryName, options, text) \
+ do { \
+ AUTO_PROFILER_STATS(PROFILER_MARKER_TEXT); \
+ ::profiler_add_marker(markerName, ::geckoprofiler::category::categoryName, \
+ options, ::geckoprofiler::markers::TextMarker{}, \
+ text); \
+ } while (false)
+
+// RAII object that adds a PROFILER_MARKER_TEXT when destroyed; the marker's
+// timing will be the interval from construction (unless an instant or start
+// time is already specified in the provided options) until destruction.
+class MOZ_RAII AutoProfilerTextMarker {
+ public:
+ AutoProfilerTextMarker(const char* aMarkerName,
+ const mozilla::MarkerCategory& aCategory,
+ mozilla::MarkerOptions&& aOptions,
+ const nsACString& aText)
+ : mMarkerName(aMarkerName),
+ mCategory(aCategory),
+ mOptions(std::move(aOptions)),
+ mText(aText) {
+ MOZ_ASSERT(mOptions.Timing().EndTime().IsNull(),
+ "AutoProfilerTextMarker options shouldn't have an end time");
+ if (profiler_is_active_and_unpaused() &&
+ mOptions.Timing().StartTime().IsNull()) {
+ mOptions.Set(mozilla::MarkerTiming::InstantNow());
+ }
+ }
+
+ ~AutoProfilerTextMarker() {
+ if (profiler_is_active_and_unpaused()) {
+ AUTO_PROFILER_LABEL("TextMarker", PROFILER);
+ mOptions.TimingRef().SetIntervalEnd();
+ AUTO_PROFILER_STATS(AUTO_PROFILER_MARKER_TEXT);
+ profiler_add_marker(
+ mozilla::ProfilerString8View::WrapNullTerminatedString(mMarkerName),
+ mCategory, std::move(mOptions), geckoprofiler::markers::TextMarker{},
+ mText);
+ }
+ }
+
+ protected:
+ const char* mMarkerName;
+ mozilla::MarkerCategory mCategory;
+ mozilla::MarkerOptions mOptions;
+ nsCString mText;
+};
+
+// Creates an AutoProfilerTextMarker RAII object. This macro is safe to use
+// even if MOZ_GECKO_PROFILER is not #defined.
+#define AUTO_PROFILER_MARKER_TEXT(markerName, categoryName, options, text) \
+ AutoProfilerTextMarker PROFILER_RAII( \
+ markerName, ::mozilla::baseprofiler::category::categoryName, options, \
+ text)
+
+class MOZ_RAII AutoProfilerTracing {
+ public:
+ AutoProfilerTracing(const char* aCategoryString, const char* aMarkerName,
+ mozilla::MarkerCategory aCategoryPair,
+ const mozilla::Maybe<uint64_t>& aInnerWindowID)
+ : mCategoryString(aCategoryString),
+ mMarkerName(aMarkerName),
+ mCategoryPair(aCategoryPair),
+ mInnerWindowID(aInnerWindowID) {
+ profiler_add_marker(
+ mozilla::ProfilerString8View::WrapNullTerminatedString(mMarkerName),
+ mCategoryPair,
+ {mozilla::MarkerTiming::IntervalStart(),
+ mozilla::MarkerInnerWindowId(mInnerWindowID)},
+ geckoprofiler::markers::Tracing{},
+ mozilla::ProfilerString8View::WrapNullTerminatedString(
+ mCategoryString));
+ }
+
+ AutoProfilerTracing(
+ const char* aCategoryString, const char* aMarkerName,
+ mozilla::MarkerCategory aCategoryPair,
+ mozilla::UniquePtr<mozilla::ProfileChunkedBuffer> aBacktrace,
+ const mozilla::Maybe<uint64_t>& aInnerWindowID)
+ : mCategoryString(aCategoryString),
+ mMarkerName(aMarkerName),
+ mCategoryPair(aCategoryPair),
+ mInnerWindowID(aInnerWindowID) {
+ profiler_add_marker(
+ mozilla::ProfilerString8View::WrapNullTerminatedString(mMarkerName),
+ mCategoryPair,
+ {mozilla::MarkerTiming::IntervalStart(),
+ mozilla::MarkerInnerWindowId(mInnerWindowID),
+ mozilla::MarkerStack::TakeBacktrace(std::move(aBacktrace))},
+ geckoprofiler::markers::Tracing{},
+ mozilla::ProfilerString8View::WrapNullTerminatedString(
+ mCategoryString));
+ }
+
+ ~AutoProfilerTracing() {
+ profiler_add_marker(
+ mozilla::ProfilerString8View::WrapNullTerminatedString(mMarkerName),
+ mCategoryPair,
+ {mozilla::MarkerTiming::IntervalEnd(),
+ mozilla::MarkerInnerWindowId(mInnerWindowID)},
+ geckoprofiler::markers::Tracing{},
+ mozilla::ProfilerString8View::WrapNullTerminatedString(
+ mCategoryString));
+ }
+
+ protected:
+ const char* mCategoryString;
+ const char* mMarkerName;
+ const mozilla::MarkerCategory mCategoryPair;
+ const mozilla::Maybe<uint64_t> mInnerWindowID;
+};
+
+// Adds a START/END pair of tracing markers.
+#define AUTO_PROFILER_TRACING_MARKER(categoryString, markerName, categoryPair) \
+ AutoProfilerTracing PROFILER_RAII(categoryString, markerName, \
+ geckoprofiler::category::categoryPair, \
+ mozilla::Nothing())
+#define AUTO_PROFILER_TRACING_MARKER_INNERWINDOWID( \
+ categoryString, markerName, categoryPair, innerWindowId) \
+ AutoProfilerTracing PROFILER_RAII(categoryString, markerName, \
+ geckoprofiler::category::categoryPair, \
+ mozilla::Some(innerWindowId))
+#define AUTO_PROFILER_TRACING_MARKER_DOCSHELL(categoryString, markerName, \
+ categoryPair, docShell) \
+ AutoProfilerTracing PROFILER_RAII( \
+ categoryString, markerName, geckoprofiler::category::categoryPair, \
+ geckoprofiler::markers::detail:: \
+ profiler_get_inner_window_id_from_docshell(docShell))
+
+#ifdef MOZ_GECKO_PROFILER
+extern template mozilla::ProfileBufferBlockIndex AddMarkerToBuffer(
+ mozilla::ProfileChunkedBuffer&, const mozilla::ProfilerString8View&,
+ const mozilla::MarkerCategory&, mozilla::MarkerOptions&&,
+ mozilla::baseprofiler::markers::NoPayload);
+
+extern template mozilla::ProfileBufferBlockIndex AddMarkerToBuffer(
+ mozilla::ProfileChunkedBuffer&, const mozilla::ProfilerString8View&,
+ const mozilla::MarkerCategory&, mozilla::MarkerOptions&&,
+ mozilla::baseprofiler::markers::TextMarker, const std::string&);
+
+extern template mozilla::ProfileBufferBlockIndex profiler_add_marker(
+ const mozilla::ProfilerString8View&, const mozilla::MarkerCategory&,
+ mozilla::MarkerOptions&&, mozilla::baseprofiler::markers::TextMarker,
+ const std::string&);
+
+extern template mozilla::ProfileBufferBlockIndex profiler_add_marker(
+ const mozilla::ProfilerString8View&, const mozilla::MarkerCategory&,
+ mozilla::MarkerOptions&&, mozilla::baseprofiler::markers::TextMarker,
+ const nsCString&);
+
+extern template mozilla::ProfileBufferBlockIndex profiler_add_marker(
+ const mozilla::ProfilerString8View&, const mozilla::MarkerCategory&,
+ mozilla::MarkerOptions&&, mozilla::baseprofiler::markers::Tracing,
+ const mozilla::ProfilerString8View&);
+#endif // MOZ_GECKO_PROFILER
+
+#endif // ProfilerMarkers_h
diff --git a/tools/profiler/public/ProfilerMarkersDetail.h b/tools/profiler/public/ProfilerMarkersDetail.h
new file mode 100644
index 0000000000..2308a14bb2
--- /dev/null
+++ b/tools/profiler/public/ProfilerMarkersDetail.h
@@ -0,0 +1,31 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef ProfilerMarkersDetail_h
+#define ProfilerMarkersDetail_h
+
+#ifndef ProfilerMarkers_h
+# error "This header should only be #included by ProfilerMarkers.h"
+#endif
+
+#include "mozilla/ProfilerMarkersPrerequisites.h"
+
+#ifdef MOZ_GECKO_PROFILER
+
+// ~~ HERE BE DRAGONS ~~
+//
+// Everything below is internal implementation detail, you shouldn't need to
+// look at it unless working on the profiler code.
+
+// Header that specializes the (de)serializers for xpcom types.
+# include "mozilla/ProfileBufferEntrySerializationGeckoExtensions.h"
+
+// Implemented in platform.cpp
+mozilla::ProfileChunkedBuffer& profiler_get_core_buffer();
+
+#endif // MOZ_GECKO_PROFILER
+
+#endif // ProfilerMarkersDetail_h
diff --git a/tools/profiler/public/ProfilerMarkersPrerequisites.h b/tools/profiler/public/ProfilerMarkersPrerequisites.h
new file mode 100644
index 0000000000..0f10f7efe2
--- /dev/null
+++ b/tools/profiler/public/ProfilerMarkersPrerequisites.h
@@ -0,0 +1,31 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+// This header contains basic definitions required to create marker types, and
+// to add markers to the profiler buffers.
+//
+// In most cases, #include "mozilla/ProfilerMarkers.h" instead, or
+// #include "mozilla/ProfilerMarkerTypes.h" for common marker types.
+
+#ifndef ProfilerMarkersPrerequisites_h
+#define ProfilerMarkersPrerequisites_h
+
+#include "mozilla/BaseProfilerMarkersPrerequisites.h"
+#include "mozilla/ProfilerThreadState.h"
+
+#ifdef MOZ_GECKO_PROFILER
+
+namespace geckoprofiler::markers {
+
+// Default marker payload types, with no extra information, not even a marker
+// type and payload. This is intended for label-only markers.
+using NoPayload = ::mozilla::baseprofiler::markers::NoPayload;
+
+} // namespace geckoprofiler::markers
+
+#endif // MOZ_GECKO_PROFILER
+
+#endif // ProfilerMarkersPrerequisites_h
diff --git a/tools/profiler/public/ProfilerParent.h b/tools/profiler/public/ProfilerParent.h
new file mode 100644
index 0000000000..8bd5c71721
--- /dev/null
+++ b/tools/profiler/public/ProfilerParent.h
@@ -0,0 +1,119 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef ProfilerParent_h
+#define ProfilerParent_h
+
+#include "mozilla/PProfilerParent.h"
+#include "mozilla/RefPtr.h"
+
+class nsIProfilerStartParams;
+
+namespace mozilla {
+
+class ProfileBufferGlobalController;
+class ProfilerParentTracker;
+
+// This is the main process side of the PProfiler protocol.
+// ProfilerParent instances only exist on the main thread of the main process.
+// The other side (ProfilerChild) lives on a background thread in the other
+// process.
+// The creation of PProfiler actors is initiated from the main process, after
+// the other process has been launched.
+// ProfilerParent instances are destroyed once the message channel closes,
+// which can be triggered by either process, depending on which one shuts down
+// first.
+// All ProfilerParent instances are registered with a manager class called
+// ProfilerParentTracker, which has the list of living ProfilerParent instances
+// and handles shutdown.
+class ProfilerParent final : public PProfilerParent {
+ public:
+ NS_INLINE_DECL_REFCOUNTING(ProfilerParent, final)
+
+ static mozilla::ipc::Endpoint<PProfilerChild> CreateForProcess(
+ base::ProcessId aOtherPid);
+
+#ifdef MOZ_GECKO_PROFILER
+ using SingleProcessProfilePromise =
+ MozPromise<IPCProfileAndAdditionalInformation, ResponseRejectReason,
+ true>;
+
+ struct SingleProcessProfilePromiseAndChildPid {
+ RefPtr<SingleProcessProfilePromise> profilePromise;
+ base::ProcessId childPid;
+ };
+
+ using SingleProcessProgressPromise =
+ MozPromise<GatherProfileProgress, ResponseRejectReason, true>;
+
+ // The following static methods can be called on any thread, but they are
+ // no-ops on anything other than the main thread.
+ // If called on the main thread, the call will be broadcast to all
+ // registered processes (all processes for which we have a ProfilerParent
+ // object).
+ // At the moment, the main process always calls these methods on the main
+ // thread, and that's the only process in which we need to forward these
+ // calls to other processes. The other processes will call these methods on
+ // the ProfilerChild background thread, but those processes don't need to
+ // forward these calls any further.
+
+ // Returns the profiles to expect, as promises and child pids.
+ static nsTArray<SingleProcessProfilePromiseAndChildPid> GatherProfiles();
+
+ // Send a request to get the GatherProfiles() progress update from one child
+ // process, returns a promise to be resolved with that progress.
+ // The promise RefPtr may be null if the child process is unknown.
+ // Progress may be invalid, if the request arrived after the child process
+ // had already responded to the main GatherProfile() IPC, or something went
+ // very wrong in that process.
+ static RefPtr<SingleProcessProgressPromise> RequestGatherProfileProgress(
+ base::ProcessId aChildPid);
+
+ // This will start the profiler in all child processes. The returned promise
+ // will be resolved when all child have completed their operation
+ // (successfully or not.)
+ [[nodiscard]] static RefPtr<GenericPromise> ProfilerStarted(
+ nsIProfilerStartParams* aParams);
+ static void ProfilerWillStopIfStarted();
+ [[nodiscard]] static RefPtr<GenericPromise> ProfilerStopped();
+ [[nodiscard]] static RefPtr<GenericPromise> ProfilerPaused();
+ [[nodiscard]] static RefPtr<GenericPromise> ProfilerResumed();
+ [[nodiscard]] static RefPtr<GenericPromise> ProfilerPausedSampling();
+ [[nodiscard]] static RefPtr<GenericPromise> ProfilerResumedSampling();
+ static void ClearAllPages();
+
+ [[nodiscard]] static RefPtr<GenericPromise> WaitOnePeriodicSampling();
+
+ // Create a "Final" update that the Child can return to its Parent.
+ static ProfileBufferChunkManagerUpdate MakeFinalUpdate();
+
+ // True if the ProfilerParent holds a lock on this thread.
+ static bool IsLockedOnCurrentThread();
+
+ private:
+ friend class ProfileBufferGlobalController;
+ friend class ProfilerParentTracker;
+
+ explicit ProfilerParent(base::ProcessId aChildPid);
+
+ void Init();
+ void ActorDestroy(ActorDestroyReason aActorDestroyReason) override;
+
+ void RequestChunkManagerUpdate();
+
+ base::ProcessId mChildPid;
+ nsTArray<MozPromiseHolder<SingleProcessProfilePromise>>
+ mPendingRequestedProfiles;
+ bool mDestroyed;
+#endif // MOZ_GECKO_PROFILER
+
+ private:
+ virtual ~ProfilerParent();
+};
+
+} // namespace mozilla
+
+#endif // ProfilerParent_h
diff --git a/tools/profiler/public/ProfilerRunnable.h b/tools/profiler/public/ProfilerRunnable.h
new file mode 100644
index 0000000000..b3b4e64043
--- /dev/null
+++ b/tools/profiler/public/ProfilerRunnable.h
@@ -0,0 +1,68 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef ProfilerRunnable_h
+#define ProfilerRunnable_h
+
+#include "GeckoProfiler.h"
+#include "nsIThreadPool.h"
+
+#if !defined(MOZ_GECKO_PROFILER) || !defined(MOZ_COLLECTING_RUNNABLE_TELEMETRY)
+# define AUTO_PROFILE_FOLLOWING_RUNNABLE(runnable)
+#else
+# define AUTO_PROFILE_FOLLOWING_RUNNABLE(runnable) \
+ mozilla::Maybe<mozilla::AutoProfileRunnable> raiiRunnableMarker; \
+ if (profiler_thread_is_being_profiled_for_markers()) { \
+ raiiRunnableMarker.emplace(runnable); \
+ }
+
+namespace mozilla {
+
+class MOZ_RAII AutoProfileRunnable {
+ public:
+ explicit AutoProfileRunnable(Runnable* aRunnable)
+ : mStartTime(TimeStamp::Now()) {
+ aRunnable->GetName(mName);
+ }
+ explicit AutoProfileRunnable(nsIRunnable* aRunnable)
+ : mStartTime(TimeStamp::Now()) {
+ nsCOMPtr<nsIThreadPool> threadPool = do_QueryInterface(aRunnable);
+ if (threadPool) {
+ // nsThreadPool::Run has its own call to AUTO_PROFILE_FOLLOWING_RUNNABLE,
+ // avoid nesting runnable markers.
+ return;
+ }
+
+ nsCOMPtr<nsINamed> named = do_QueryInterface(aRunnable);
+ if (named) {
+ named->GetName(mName);
+ }
+ }
+ explicit AutoProfileRunnable(nsACString& aName)
+ : mStartTime(TimeStamp::Now()), mName(aName) {}
+
+ ~AutoProfileRunnable() {
+ if (mName.IsEmpty()) {
+ return;
+ }
+
+ AUTO_PROFILER_LABEL("AutoProfileRunnable", PROFILER);
+ AUTO_PROFILER_STATS(AUTO_PROFILE_RUNNABLE);
+ profiler_add_marker("Runnable", ::mozilla::baseprofiler::category::OTHER,
+ MarkerTiming::IntervalUntilNowFrom(mStartTime),
+ geckoprofiler::markers::TextMarker{}, mName);
+ }
+
+ protected:
+ TimeStamp mStartTime;
+ nsAutoCString mName;
+};
+
+} // namespace mozilla
+
+#endif
+
+#endif // ProfilerRunnable_h
diff --git a/tools/profiler/public/ProfilerRustBindings.h b/tools/profiler/public/ProfilerRustBindings.h
new file mode 100644
index 0000000000..bf290838a1
--- /dev/null
+++ b/tools/profiler/public/ProfilerRustBindings.h
@@ -0,0 +1,12 @@
+// This Source Code Form is subject to the terms of the Mozilla Public
+// License, v. 2.0. If a copy of the MPL was not distributed with this
+// file, You can obtain one at https://mozilla.org/MPL/2.0/.
+
+#ifndef ProfilerRustBindings_h
+#define ProfilerRustBindings_h
+
+#include "mozilla/profiler_ffi_generated.h"
+
+// Add any non-generated support code here
+
+#endif // ProfilerRustBindings_h
diff --git a/tools/profiler/public/ProfilerState.h b/tools/profiler/public/ProfilerState.h
new file mode 100644
index 0000000000..7a9f3f5c73
--- /dev/null
+++ b/tools/profiler/public/ProfilerState.h
@@ -0,0 +1,399 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+// This header contains most functions that give information about the Profiler:
+// Whether it is active or not, paused, and the selected features.
+// It is safe to include unconditionally, but uses of structs and functions must
+// be guarded by `#ifdef MOZ_GECKO_PROFILER`.
+
+#ifndef ProfilerState_h
+#define ProfilerState_h
+
+#include <mozilla/DefineEnum.h>
+#include <mozilla/EnumSet.h>
+#include "mozilla/ProfilerUtils.h"
+
+#include <functional>
+
+//---------------------------------------------------------------------------
+// Profiler features
+//---------------------------------------------------------------------------
+
+#if defined(__APPLE__) && defined(__aarch64__)
+# define POWER_HELP "Sample per process power use"
+#elif defined(__APPLE__) && defined(__x86_64__)
+# define POWER_HELP \
+ "Record the power used by the entire system with each sample."
+#elif defined(__linux__) && defined(__x86_64__)
+# define POWER_HELP \
+ "Record the power used by the entire system with each sample. " \
+ "Only available with Intel CPUs and requires setting " \
+ "the sysctl kernel.perf_event_paranoid to 0."
+
+#elif defined(_MSC_VER)
+# define POWER_HELP \
+ "Record the value of every energy meter available on the system with " \
+ "each sample. Only available on Windows 11 with Intel CPUs."
+#else
+# define POWER_HELP "Not supported on this platform."
+#endif
+
+// Higher-order macro containing all the feature info in one place. Define
+// |MACRO| appropriately to extract the relevant parts. Note that the number
+// values are used internally only and so can be changed without consequence.
+// Any changes to this list should also be applied to the feature list in
+// toolkit/components/extensions/schemas/geckoProfiler.json.
+// *** Synchronize with lists in BaseProfilerState.h and geckoProfiler.json ***
+#define PROFILER_FOR_EACH_FEATURE(MACRO) \
+ MACRO(0, "java", Java, "Profile Java code, Android only") \
+ \
+ MACRO(1, "js", JS, \
+ "Get the JS engine to expose the JS stack to the profiler") \
+ \
+ MACRO(2, "mainthreadio", MainThreadIO, "Add main thread file I/O") \
+ \
+ MACRO(3, "fileio", FileIO, \
+ "Add file I/O from all profiled threads, implies mainthreadio") \
+ \
+ MACRO(4, "fileioall", FileIOAll, \
+ "Add file I/O from all threads, implies fileio") \
+ \
+ MACRO(5, "nomarkerstacks", NoMarkerStacks, \
+ "Markers do not capture stacks, to reduce overhead") \
+ \
+ MACRO(6, "screenshots", Screenshots, \
+ "Take a snapshot of the window on every composition") \
+ \
+ MACRO(7, "seqstyle", SequentialStyle, \
+ "Disable parallel traversal in styling") \
+ \
+ MACRO(8, "stackwalk", StackWalk, \
+ "Walk the C++ stack, not available on all platforms") \
+ \
+ MACRO(9, "jsallocations", JSAllocations, \
+ "Have the JavaScript engine track allocations") \
+ \
+ MACRO(10, "nostacksampling", NoStackSampling, \
+ "Disable all stack sampling: Cancels \"js\", \"stackwalk\" and " \
+ "labels") \
+ \
+ MACRO(11, "nativeallocations", NativeAllocations, \
+ "Collect the stacks from a smaller subset of all native " \
+ "allocations, biasing towards collecting larger allocations") \
+ \
+ MACRO(12, "ipcmessages", IPCMessages, \
+ "Have the IPC layer track cross-process messages") \
+ \
+ MACRO(13, "audiocallbacktracing", AudioCallbackTracing, \
+ "Audio callback tracing") \
+ \
+ MACRO(14, "cpu", CPUUtilization, "CPU utilization") \
+ \
+ MACRO(15, "notimerresolutionchange", NoTimerResolutionChange, \
+ "Do not adjust the timer resolution for sampling, so that other " \
+ "Firefox timers do not get affected") \
+ \
+ MACRO(16, "cpuallthreads", CPUAllThreads, \
+ "Sample the CPU utilization of all registered threads") \
+ \
+ MACRO(17, "samplingallthreads", SamplingAllThreads, \
+ "Sample the stacks of all registered threads") \
+ \
+ MACRO(18, "markersallthreads", MarkersAllThreads, \
+ "Record markers from all registered threads") \
+ \
+ MACRO(19, "unregisteredthreads", UnregisteredThreads, \
+ "Discover and profile unregistered threads -- beware: expensive!") \
+ \
+ MACRO(20, "processcpu", ProcessCPU, \
+ "Sample the CPU utilization of each process") \
+ \
+ MACRO(21, "power", Power, POWER_HELP)
+// *** Synchronize with lists in BaseProfilerState.h and geckoProfiler.json ***
+
+struct ProfilerFeature {
+#define DECLARE(n_, str_, Name_, desc_) \
+ static constexpr uint32_t Name_ = (1u << n_); \
+ [[nodiscard]] static constexpr bool Has##Name_(uint32_t aFeatures) { \
+ return aFeatures & Name_; \
+ } \
+ static constexpr void Set##Name_(uint32_t& aFeatures) { \
+ aFeatures |= Name_; \
+ } \
+ static constexpr void Clear##Name_(uint32_t& aFeatures) { \
+ aFeatures &= ~Name_; \
+ }
+
+ // Define a bitfield constant, a getter, and two setters for each feature.
+ PROFILER_FOR_EACH_FEATURE(DECLARE)
+
+#undef DECLARE
+};
+
+// clang-format off
+MOZ_DEFINE_ENUM_CLASS(ProfilingState,(
+ // A callback will be invoked ...
+ AlreadyActive, // if the profiler is active when the callback is added.
+ RemovingCallback, // when the callback is removed.
+ Started, // after the profiler has started.
+ Pausing, // before the profiler is paused.
+ Resumed, // after the profiler has resumed.
+ GeneratingProfile, // before a profile is created.
+ Stopping, // before the profiler stops (unless restarting afterward).
+ ShuttingDown // before the profiler is shut down.
+));
+// clang-format on
+
+[[nodiscard]] inline static const char* ProfilingStateToString(
+ ProfilingState aProfilingState) {
+ switch (aProfilingState) {
+ case ProfilingState::AlreadyActive:
+ return "Profiler already active";
+ case ProfilingState::RemovingCallback:
+ return "Callback being removed";
+ case ProfilingState::Started:
+ return "Profiler started";
+ case ProfilingState::Pausing:
+ return "Profiler pausing";
+ case ProfilingState::Resumed:
+ return "Profiler resumed";
+ case ProfilingState::GeneratingProfile:
+ return "Generating profile";
+ case ProfilingState::Stopping:
+ return "Profiler stopping";
+ case ProfilingState::ShuttingDown:
+ return "Profiler shutting down";
+ default:
+ MOZ_ASSERT_UNREACHABLE("Unexpected ProfilingState enum value");
+ return "?";
+ }
+}
+
+using ProfilingStateSet = mozilla::EnumSet<ProfilingState>;
+
+[[nodiscard]] constexpr ProfilingStateSet AllProfilingStates() {
+ ProfilingStateSet set;
+ using Value = std::underlying_type_t<ProfilingState>;
+ for (Value stateValue = 0;
+ stateValue <= static_cast<Value>(kHighestProfilingState); ++stateValue) {
+ set += static_cast<ProfilingState>(stateValue);
+ }
+ return set;
+}
+
+// Type of callbacks to be invoked at certain state changes.
+// It must NOT call profiler_add/remove_state_change_callback().
+using ProfilingStateChangeCallback = std::function<void(ProfilingState)>;
+
+#ifndef MOZ_GECKO_PROFILER
+
+[[nodiscard]] inline bool profiler_is_active() { return false; }
+[[nodiscard]] inline bool profiler_is_active_and_unpaused() { return false; }
+[[nodiscard]] inline bool profiler_feature_active(uint32_t aFeature) {
+ return false;
+}
+[[nodiscard]] inline bool profiler_is_locked_on_current_thread() {
+ return false;
+}
+inline void profiler_add_state_change_callback(
+ ProfilingStateSet aProfilingStateSet,
+ ProfilingStateChangeCallback&& aCallback, uintptr_t aUniqueIdentifier = 0) {
+}
+inline void profiler_remove_state_change_callback(uintptr_t aUniqueIdentifier) {
+}
+
+#else // !MOZ_GECKO_PROFILER
+
+# include "mozilla/Atomics.h"
+# include "mozilla/Maybe.h"
+
+# include <stdint.h>
+
+namespace mozilla::profiler::detail {
+
+// RacyFeatures is only defined in this header file so that its methods can
+// be inlined into profiler_is_active(). Please do not use anything from the
+// detail namespace outside the profiler.
+
+// Within the profiler's code, the preferred way to check profiler activeness
+// and features is via ActivePS(). However, that requires locking gPSMutex.
+// There are some hot operations where absolute precision isn't required, so we
+// duplicate the activeness/feature state in a lock-free manner in this class.
+class RacyFeatures {
+ public:
+ static void SetActive(uint32_t aFeatures) {
+ sActiveAndFeatures = Active | aFeatures;
+ }
+
+ static void SetInactive() { sActiveAndFeatures = 0; }
+
+ static void SetPaused() { sActiveAndFeatures |= Paused; }
+
+ static void SetUnpaused() { sActiveAndFeatures &= ~Paused; }
+
+ static void SetSamplingPaused() { sActiveAndFeatures |= SamplingPaused; }
+
+ static void SetSamplingUnpaused() { sActiveAndFeatures &= ~SamplingPaused; }
+
+ [[nodiscard]] static mozilla::Maybe<uint32_t> FeaturesIfActive() {
+ if (uint32_t af = sActiveAndFeatures; af & Active) {
+ // Active, remove the Active&Paused bits to get all features.
+ return Some(af & ~(Active | Paused | SamplingPaused));
+ }
+ return Nothing();
+ }
+
+ [[nodiscard]] static mozilla::Maybe<uint32_t> FeaturesIfActiveAndUnpaused() {
+ if (uint32_t af = sActiveAndFeatures; (af & (Active | Paused)) == Active) {
+ // Active but not fully paused, remove the Active and sampling-paused bits
+ // to get all features.
+ return Some(af & ~(Active | SamplingPaused));
+ }
+ return Nothing();
+ }
+
+ // This implementation must be kept in sync with `gecko_profiler::is_active`
+ // in the Profiler Rust API.
+ [[nodiscard]] static bool IsActive() {
+ return uint32_t(sActiveAndFeatures) & Active;
+ }
+
+ [[nodiscard]] static bool IsActiveWithFeature(uint32_t aFeature) {
+ uint32_t af = sActiveAndFeatures; // copy it first
+ return (af & Active) && (af & aFeature);
+ }
+
+ [[nodiscard]] static bool IsActiveWithoutFeature(uint32_t aFeature) {
+ uint32_t af = sActiveAndFeatures; // copy it first
+ return (af & Active) && !(af & aFeature);
+ }
+
+ // True if profiler is active, and not fully paused.
+ // Note that periodic sampling *could* be paused!
+ // This implementation must be kept in sync with
+ // `gecko_profiler::can_accept_markers` in the Profiler Rust API.
+ [[nodiscard]] static bool IsActiveAndUnpaused() {
+ uint32_t af = sActiveAndFeatures; // copy it first
+ return (af & Active) && !(af & Paused);
+ }
+
+ // True if profiler is active, and sampling is not paused (though generic
+ // `SetPaused()` or specific `SetSamplingPaused()`).
+ [[nodiscard]] static bool IsActiveAndSamplingUnpaused() {
+ uint32_t af = sActiveAndFeatures; // copy it first
+ return (af & Active) && !(af & (Paused | SamplingPaused));
+ }
+
+ private:
+ static constexpr uint32_t Active = 1u << 31;
+ static constexpr uint32_t Paused = 1u << 30;
+ static constexpr uint32_t SamplingPaused = 1u << 29;
+
+// Ensure Active/Paused don't overlap with any of the feature bits.
+# define NO_OVERLAP(n_, str_, Name_, desc_) \
+ static_assert(ProfilerFeature::Name_ != SamplingPaused, \
+ "bad feature value");
+
+ PROFILER_FOR_EACH_FEATURE(NO_OVERLAP);
+
+# undef NO_OVERLAP
+
+ // We combine the active bit with the feature bits so they can be read or
+ // written in a single atomic operation. Accesses to this atomic are not
+ // recorded by web replay as they may occur at non-deterministic points.
+ static mozilla::Atomic<uint32_t, mozilla::MemoryOrdering::Relaxed>
+ sActiveAndFeatures;
+};
+
+} // namespace mozilla::profiler::detail
+
+//---------------------------------------------------------------------------
+// Get information from the profiler
+//---------------------------------------------------------------------------
+
+// Is the profiler active? Note: the return value of this function can become
+// immediately out-of-date. E.g. the profile might be active but then
+// profiler_stop() is called immediately afterward. One common and reasonable
+// pattern of usage is the following:
+//
+// if (profiler_is_active()) {
+// ExpensiveData expensiveData = CreateExpensiveData();
+// PROFILER_OPERATION(expensiveData);
+// }
+//
+// where PROFILER_OPERATION is a no-op if the profiler is inactive. In this
+// case the profiler_is_active() check is just an optimization -- it prevents
+// us calling CreateExpensiveData() unnecessarily in most cases, but the
+// expensive data will end up being created but not used if another thread
+// stops the profiler between the CreateExpensiveData() and PROFILER_OPERATION
+// calls.
+[[nodiscard]] inline bool profiler_is_active() {
+ return mozilla::profiler::detail::RacyFeatures::IsActive();
+}
+
+// Same as profiler_is_active(), but also checks if the profiler is not paused.
+[[nodiscard]] inline bool profiler_is_active_and_unpaused() {
+ return mozilla::profiler::detail::RacyFeatures::IsActiveAndUnpaused();
+}
+
+// Is the profiler active and paused? Returns false if the profiler is inactive.
+[[nodiscard]] bool profiler_is_paused();
+
+// Is the profiler active and sampling is paused? Returns false if the profiler
+// is inactive.
+[[nodiscard]] bool profiler_is_sampling_paused();
+
+// Get all the features supported by the profiler that are accepted by
+// profiler_start(). The result is the same whether the profiler is active or
+// not.
+[[nodiscard]] uint32_t profiler_get_available_features();
+
+// Returns the full feature set if the profiler is active.
+// Note: the return value can become immediately out-of-date, much like the
+// return value of profiler_is_active().
+[[nodiscard]] inline mozilla::Maybe<uint32_t> profiler_features_if_active() {
+ return mozilla::profiler::detail::RacyFeatures::FeaturesIfActive();
+}
+
+// Returns the full feature set if the profiler is active and unpaused.
+// Note: the return value can become immediately out-of-date, much like the
+// return value of profiler_is_active().
+[[nodiscard]] inline mozilla::Maybe<uint32_t>
+profiler_features_if_active_and_unpaused() {
+ return mozilla::profiler::detail::RacyFeatures::FeaturesIfActiveAndUnpaused();
+}
+
+// Check if a profiler feature (specified via the ProfilerFeature type) is
+// active. Returns false if the profiler is inactive. Note: the return value
+// can become immediately out-of-date, much like the return value of
+// profiler_is_active().
+[[nodiscard]] bool profiler_feature_active(uint32_t aFeature);
+
+// Check if the profiler is active without a feature (specified via the
+// ProfilerFeature type). Note: the return value can become immediately
+// out-of-date, much like the return value of profiler_is_active().
+[[nodiscard]] bool profiler_active_without_feature(uint32_t aFeature);
+
+// Returns true if any of the profiler mutexes are currently locked *on the
+// current thread*. This may be used by re-entrant code that may call profiler
+// functions while the same of a different profiler mutex is locked, which could
+// deadlock.
+[[nodiscard]] bool profiler_is_locked_on_current_thread();
+
+// Install a callback to be invoked at any of the given profiling state changes.
+// An optional non-zero identifier may be given, to allow later removal of the
+// callback, the caller is responsible for making sure it's really unique (e.g.,
+// by using a pointer to an object it owns.)
+void profiler_add_state_change_callback(
+ ProfilingStateSet aProfilingStateSet,
+ ProfilingStateChangeCallback&& aCallback, uintptr_t aUniqueIdentifier = 0);
+
+// Remove the callback with the given non-zero identifier.
+void profiler_remove_state_change_callback(uintptr_t aUniqueIdentifier);
+
+#endif // MOZ_GECKO_PROFILER
+
+#endif // ProfilerState_h
diff --git a/tools/profiler/public/ProfilerThreadPlatformData.h b/tools/profiler/public/ProfilerThreadPlatformData.h
new file mode 100644
index 0000000000..c243a8ee02
--- /dev/null
+++ b/tools/profiler/public/ProfilerThreadPlatformData.h
@@ -0,0 +1,80 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef ProfilerThreadPlatformData_h
+#define ProfilerThreadPlatformData_h
+
+#include "mozilla/ProfilerUtils.h"
+
+#if defined(__APPLE__)
+# include <mach/mach_types.h>
+#elif defined(__linux__) || defined(__ANDROID__) || defined(__FreeBSD__)
+# include "mozilla/Maybe.h"
+# include <time.h>
+#endif
+
+namespace mozilla::profiler {
+
+class PlatformData {
+#if (defined(_MSC_VER) || defined(__MINGW32__)) && defined(MOZ_GECKO_PROFILER)
+ public:
+ explicit PlatformData(ProfilerThreadId aThreadId);
+ ~PlatformData();
+
+ // Faking win32's HANDLE, because #including "windows.h" here causes trouble
+ // (e.g., it #defines `Yield` as nothing!)
+ // This type is static_check'ed against HANDLE in platform-win32.cpp.
+ using WindowsHandle = void*;
+ WindowsHandle ProfiledThread() const { return mProfiledThread; }
+
+ private:
+ WindowsHandle mProfiledThread;
+#elif defined(__APPLE__) && defined(MOZ_GECKO_PROFILER)
+ public:
+ explicit PlatformData(ProfilerThreadId aThreadId);
+ ~PlatformData();
+ thread_act_t ProfiledThread() const { return mProfiledThread; }
+
+ private:
+ // Note: for mProfiledThread Mach primitives are used instead of pthread's
+ // because the latter doesn't provide thread manipulation primitives
+ // required. For details, consult "Mac OS X Internals" book, Section 7.3.
+ thread_act_t mProfiledThread;
+#elif (defined(__linux__) || defined(__ANDROID__) || defined(__FreeBSD__)) && \
+ defined(MOZ_GECKO_PROFILER)
+ public:
+ explicit PlatformData(ProfilerThreadId aThreadId);
+ ~PlatformData();
+ // Clock Id for this profiled thread. `Nothing` if `pthread_getcpuclockid`
+ // failed (e.g., if the system doesn't support per-thread clocks).
+ Maybe<clockid_t> GetClockId() const { return mClockId; }
+
+ private:
+ Maybe<clockid_t> mClockId;
+#else
+ public:
+ explicit PlatformData(ProfilerThreadId aThreadId) {}
+#endif
+};
+
+/**
+ * Return the number of nanoseconds of CPU time used since thread start.
+ *
+ * @return true on success.
+ */
+#if defined(MOZ_GECKO_PROFILER)
+bool GetCpuTimeSinceThreadStartInNs(uint64_t* aResult,
+ const PlatformData& aPlatformData);
+#else
+static inline bool GetCpuTimeSinceThreadStartInNs(
+ uint64_t* aResult, const PlatformData& aPlatformData) {
+ return false;
+}
+#endif
+
+} // namespace mozilla::profiler
+
+#endif // ProfilerThreadPlatformData_h
diff --git a/tools/profiler/public/ProfilerThreadRegistration.h b/tools/profiler/public/ProfilerThreadRegistration.h
new file mode 100644
index 0000000000..3fb931987d
--- /dev/null
+++ b/tools/profiler/public/ProfilerThreadRegistration.h
@@ -0,0 +1,367 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef ProfilerThreadRegistration_h
+#define ProfilerThreadRegistration_h
+
+#include "mozilla/BaseProfilerDetail.h"
+#include "mozilla/ProfilerThreadRegistrationData.h"
+#include "mozilla/ThreadLocal.h"
+
+namespace mozilla::profiler {
+
+class ThreadRegistry;
+
+// To use as RAII object, or through RegisterThread/UnregisterThread.
+// Automatically registers itself with TLS and Profiler.
+// It can be safely nested, but nested instances are just ignored.
+// See Get.../With... functions for how to access the data.
+class ThreadRegistration {
+ private:
+ using DataMutex = baseprofiler::detail::BaseProfilerMutex;
+ using DataLock = baseprofiler::detail::BaseProfilerAutoLock;
+
+ public:
+ // Constructor to use as RAII auto-registration object.
+ // It stores itself in the TLS (its effective owner), and gives its pointer to
+ // the Profiler.
+ ThreadRegistration(const char* aName, const void* aStackTop);
+
+ // Destruction reverses construction: Remove pointer from the Profiler (except
+ // for the main thread, because it should be done by the profiler itself) and
+ // from the TLS.
+ ~ThreadRegistration();
+
+ // Manual construction&destruction, if RAII is not possible or too expensive
+ // in stack space.
+ // RegisterThread() *must* be paired with exactly one UnregisterThread() on
+ // the same thread. (Extra UnregisterThread() calls are handled safely, but
+ // they may cause profiling of this thread to stop earlier than expected.)
+ static ProfilingStack* RegisterThread(const char* aName,
+ const void* aStackTop);
+ static void UnregisterThread();
+
+ [[nodiscard]] static bool IsRegistered() { return GetFromTLS(); }
+
+ // Prevent copies&moves.
+ ThreadRegistration(const ThreadRegistration&) = delete;
+ ThreadRegistration& operator=(const ThreadRegistration&) = delete;
+
+ // Aliases to data accessors (removing the ThreadRegistration prefix).
+
+ using UnlockedConstReader = ThreadRegistrationUnlockedConstReader;
+ using UnlockedConstReaderAndAtomicRW =
+ ThreadRegistrationUnlockedConstReaderAndAtomicRW;
+ using UnlockedRWForLockedProfiler =
+ ThreadRegistrationUnlockedRWForLockedProfiler;
+ using UnlockedReaderAndAtomicRWOnThread =
+ ThreadRegistrationUnlockedReaderAndAtomicRWOnThread;
+ using LockedRWFromAnyThread = ThreadRegistrationLockedRWFromAnyThread;
+ using LockedRWOnThread = ThreadRegistrationLockedRWOnThread;
+
+ // On-thread access from the TLS, providing the following data accessors:
+ // UnlockedConstReader, UnlockedConstReaderAndAtomicRW,
+ // UnlockedRWForLockedProfiler, UnlockedReaderAndAtomicRWOnThread, and
+ // LockedRWOnThread.
+ // (See ThreadRegistry class for OFF-thread access.)
+
+ // Reference-like class pointing at the ThreadRegistration for the current
+ // thread.
+ class OnThreadRef {
+ public:
+ // const UnlockedConstReader
+
+ [[nodiscard]] const UnlockedConstReader& UnlockedConstReaderCRef() const {
+ return mThreadRegistration->mData;
+ }
+
+ template <typename F>
+ auto WithUnlockedConstReader(F&& aF) const {
+ return std::forward<F>(aF)(UnlockedConstReaderCRef());
+ }
+
+ // const UnlockedConstReaderAndAtomicRW
+
+ [[nodiscard]] const UnlockedConstReaderAndAtomicRW&
+ UnlockedConstReaderAndAtomicRWCRef() const {
+ return mThreadRegistration->mData;
+ }
+
+ template <typename F>
+ auto WithUnlockedConstReaderAndAtomicRW(F&& aF) const {
+ return std::forward<F>(aF)(UnlockedConstReaderAndAtomicRWCRef());
+ }
+
+ // UnlockedConstReaderAndAtomicRW
+
+ [[nodiscard]] UnlockedConstReaderAndAtomicRW&
+ UnlockedConstReaderAndAtomicRWRef() {
+ return mThreadRegistration->mData;
+ }
+
+ template <typename F>
+ auto WithUnlockedConstReaderAndAtomicRW(F&& aF) {
+ return std::forward<F>(aF)(UnlockedConstReaderAndAtomicRWRef());
+ }
+
+ // const UnlockedRWForLockedProfiler
+
+ [[nodiscard]] const UnlockedRWForLockedProfiler&
+ UnlockedRWForLockedProfilerCRef() const {
+ return mThreadRegistration->mData;
+ }
+
+ template <typename F>
+ auto WithUnlockedRWForLockedProfiler(F&& aF) const {
+ return std::forward<F>(aF)(UnlockedRWForLockedProfilerCRef());
+ }
+
+ // UnlockedRWForLockedProfiler
+
+ [[nodiscard]] UnlockedRWForLockedProfiler&
+ UnlockedRWForLockedProfilerRef() {
+ return mThreadRegistration->mData;
+ }
+
+ template <typename F>
+ auto WithUnlockedRWForLockedProfiler(F&& aF) {
+ return std::forward<F>(aF)(UnlockedRWForLockedProfilerRef());
+ }
+
+ // const UnlockedReaderAndAtomicRWOnThread
+
+ [[nodiscard]] const UnlockedReaderAndAtomicRWOnThread&
+ UnlockedReaderAndAtomicRWOnThreadCRef() const {
+ return mThreadRegistration->mData;
+ }
+
+ template <typename F>
+ auto WithUnlockedReaderAndAtomicRWOnThread(F&& aF) const {
+ return std::forward<F>(aF)(UnlockedReaderAndAtomicRWOnThreadCRef());
+ }
+
+ // UnlockedReaderAndAtomicRWOnThread
+
+ [[nodiscard]] UnlockedReaderAndAtomicRWOnThread&
+ UnlockedReaderAndAtomicRWOnThreadRef() {
+ return mThreadRegistration->mData;
+ }
+
+ template <typename F>
+ auto WithUnlockedReaderAndAtomicRWOnThread(F&& aF) {
+ return std::forward<F>(aF)(UnlockedReaderAndAtomicRWOnThreadRef());
+ }
+
+ // const LockedRWOnThread through ConstRWOnThreadWithLock
+
+ // Locking order: Profiler, ThreadRegistry, ThreadRegistration.
+ class ConstRWOnThreadWithLock {
+ public:
+ [[nodiscard]] const LockedRWOnThread& DataCRef() const {
+ return mLockedRWOnThread;
+ }
+ [[nodiscard]] const LockedRWOnThread* operator->() const {
+ return &mLockedRWOnThread;
+ }
+
+ private:
+ friend class OnThreadRef;
+ ConstRWOnThreadWithLock(const LockedRWOnThread& aLockedRWOnThread,
+ DataMutex& aDataMutex)
+ : mLockedRWOnThread(aLockedRWOnThread), mDataLock(aDataMutex) {}
+
+ const LockedRWOnThread& mLockedRWOnThread;
+ DataLock mDataLock;
+ };
+
+ [[nodiscard]] ConstRWOnThreadWithLock ConstLockedRWOnThread() const {
+ return ConstRWOnThreadWithLock{mThreadRegistration->mData,
+ mThreadRegistration->mDataMutex};
+ }
+
+ template <typename F>
+ auto WithConstLockedRWOnThread(F&& aF) const {
+ ConstRWOnThreadWithLock lockedData = ConstLockedRWOnThread();
+ return std::forward<F>(aF)(lockedData.DataCRef());
+ }
+
+ // LockedRWOnThread through RWOnThreadWithLock
+
+ // Locking order: Profiler, ThreadRegistry, ThreadRegistration.
+ class RWOnThreadWithLock {
+ public:
+ [[nodiscard]] const LockedRWOnThread& DataCRef() const {
+ return mLockedRWOnThread;
+ }
+ [[nodiscard]] LockedRWOnThread& DataRef() { return mLockedRWOnThread; }
+ [[nodiscard]] const LockedRWOnThread* operator->() const {
+ return &mLockedRWOnThread;
+ }
+ [[nodiscard]] LockedRWOnThread* operator->() {
+ return &mLockedRWOnThread;
+ }
+
+ private:
+ friend class OnThreadRef;
+ RWOnThreadWithLock(LockedRWOnThread& aLockedRWOnThread,
+ DataMutex& aDataMutex)
+ : mLockedRWOnThread(aLockedRWOnThread), mDataLock(aDataMutex) {}
+
+ LockedRWOnThread& mLockedRWOnThread;
+ DataLock mDataLock;
+ };
+
+ [[nodiscard]] RWOnThreadWithLock GetLockedRWOnThread() {
+ return RWOnThreadWithLock{mThreadRegistration->mData,
+ mThreadRegistration->mDataMutex};
+ }
+
+ template <typename F>
+ auto WithLockedRWOnThread(F&& aF) {
+ RWOnThreadWithLock lockedData = GetLockedRWOnThread();
+ return std::forward<F>(aF)(lockedData.DataRef());
+ }
+
+ // This is needed to allow OnThreadPtr::operator-> to return a temporary
+ // OnThreadRef object, for which `->` must work; Here it provides a pointer
+ // to itself, so that the next follow-up `->` will work as member accessor.
+ OnThreadRef* operator->() && { return this; }
+
+ private:
+ // Only ThreadRegistration should construct an OnThreadRef.
+ friend class ThreadRegistration;
+ explicit OnThreadRef(ThreadRegistration& aThreadRegistration)
+ : mThreadRegistration(&aThreadRegistration) {}
+
+ // Allow ThreadRegistry to read mThreadRegistration.
+ friend class ThreadRegistry;
+
+ // Guaranted to be non-null by construction from a reference.
+ ThreadRegistration* mThreadRegistration;
+ };
+
+ // Pointer-like class pointing at the ThreadRegistration for the current
+ // thread, if one was registered.
+ class OnThreadPtr {
+ public:
+ [[nodiscard]] explicit operator bool() const { return mThreadRegistration; }
+
+ // Note that this resolves to a temporary OnThreadRef object, which has all
+ // the allowed data accessors.
+ [[nodiscard]] OnThreadRef operator*() const {
+ MOZ_ASSERT(mThreadRegistration);
+ return OnThreadRef(*mThreadRegistration);
+ }
+
+ // Note that this resolves to a temporary OnThreadRef object, which also
+ // overloads operator-> and has all the allowed data accessors.
+ [[nodiscard]] OnThreadRef operator->() const {
+ MOZ_ASSERT(mThreadRegistration);
+ return OnThreadRef(*mThreadRegistration);
+ }
+
+ private:
+ friend class ThreadRegistration;
+ explicit OnThreadPtr(ThreadRegistration* aThreadRegistration)
+ : mThreadRegistration(aThreadRegistration) {}
+
+ ThreadRegistration* mThreadRegistration;
+ };
+
+ [[nodiscard]] static OnThreadPtr GetOnThreadPtr() {
+ return OnThreadPtr{GetFromTLS()};
+ }
+
+ // Call `F(OnThreadRef)`.
+ template <typename F>
+ static void WithOnThreadRef(F&& aF) {
+ const auto* tls = GetTLS();
+ if (tls) {
+ ThreadRegistration* tr = tls->get();
+ if (tr) {
+ std::forward<F>(aF)(OnThreadRef{*tr});
+ }
+ }
+ }
+
+ // Call `F(OnThreadRef)`.
+ template <typename F, typename FallbackReturn>
+ [[nodiscard]] static auto WithOnThreadRefOr(F&& aF,
+ FallbackReturn&& aFallbackReturn)
+ -> decltype(std::forward<F>(aF)(std::declval<OnThreadRef>())) {
+ const auto* tls = GetTLS();
+ if (tls) {
+ ThreadRegistration* tr = tls->get();
+ if (tr) {
+ return std::forward<F>(aF)(OnThreadRef{*tr});
+ }
+ }
+ return std::forward<FallbackReturn>(aFallbackReturn);
+ }
+
+ [[nodiscard]] static bool IsDataMutexLockedOnCurrentThread() {
+ if (const ThreadRegistration* tr = GetFromTLS(); tr) {
+ return tr->mDataMutex.IsLockedOnCurrentThread();
+ }
+ return false;
+ }
+
+ size_t SizeOfExcludingThis(MallocSizeOf aMallocSizeOf) const {
+ DataLock lock(mDataMutex);
+ return mData.SizeOfExcludingThis(aMallocSizeOf);
+ }
+
+ size_t SizeOfIncludingThis(MallocSizeOf aMallocSizeOf) const {
+ // aMallocSizeOf can only be used on head-allocated objects. Stack
+ // allocations and static objects are not counted.
+ return (mIsOnHeap ? aMallocSizeOf(this) : 0) +
+ SizeOfExcludingThis(aMallocSizeOf);
+ }
+
+ private:
+ friend class ThreadRegistry;
+
+ // This is what is embedded inside ThreadRegistration.
+ // References to sub-classes will be provided, to limit access as appropriate.
+ class EmbeddedData final : public LockedRWOnThread {
+ private:
+ // Only ThreadRegistration can construct (its embedded) `mData`.
+ friend class ThreadRegistration;
+ EmbeddedData(const char* aName, const void* aStackTop)
+ : LockedRWOnThread(aName, aStackTop) {}
+ };
+ EmbeddedData mData;
+
+ // Used when writing on self thread, and for any access from any thread.
+ // Locking order: Profiler, ThreadRegistry, ThreadRegistration.
+ mutable DataMutex mDataMutex;
+
+ // In case of nested (non-RAII) registrations. Only accessed on thread.
+ int mOtherRegistrations = 0;
+
+ // Set to true if allocated by `RegisterThread()`. Otherwise we assume that it
+ // is on the stack.
+ bool mIsOnHeap = false;
+
+ // Only accessed by ThreadRegistry on this thread.
+ bool mIsRegistryLockedSharedOnThisThread = false;
+
+ static MOZ_THREAD_LOCAL(ThreadRegistration*) tlsThreadRegistration;
+
+ [[nodiscard]] static decltype(tlsThreadRegistration)* GetTLS() {
+ static const bool initialized = tlsThreadRegistration.init();
+ return initialized ? &tlsThreadRegistration : nullptr;
+ }
+
+ [[nodiscard]] static ThreadRegistration* GetFromTLS() {
+ const auto tls = GetTLS();
+ return tls ? tls->get() : nullptr;
+ }
+};
+
+} // namespace mozilla::profiler
+
+#endif // ProfilerThreadRegistration_h
diff --git a/tools/profiler/public/ProfilerThreadRegistrationData.h b/tools/profiler/public/ProfilerThreadRegistrationData.h
new file mode 100644
index 0000000000..7c14290e4c
--- /dev/null
+++ b/tools/profiler/public/ProfilerThreadRegistrationData.h
@@ -0,0 +1,537 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+// This header contains classes that hold data related to thread profiling:
+// Data members are stored `protected` in `ThreadRegistrationData`.
+// Non-virtual sub-classes of ProfilerThreadRegistrationData provide layers of
+// public accessors to subsets of the data. Each level builds on the previous
+// one and adds further access to more data, but always with the appropriate
+// guards where necessary.
+// These classes have protected constructors, so only some trusted classes
+// `ThreadRegistration` and `ThreadRegistry` will be able to construct them, and
+// then give limited access depending on who asks (the owning thread or another
+// one), and how much data they actually need.
+//
+// The hierarchy is, from base to most derived:
+// - ThreadRegistrationData
+// - ThreadRegistrationUnlockedConstReader
+// - ThreadRegistrationUnlockedConstReaderAndAtomicRW
+// - ThreadRegistrationUnlockedRWForLockedProfiler
+// - ThreadRegistrationUnlockedReaderAndAtomicRWOnThread
+// - ThreadRegistrationLockedRWFromAnyThread
+// - ThreadRegistrationLockedRWOnThread
+// - ThreadRegistration::EmbeddedData (actual data member in ThreadRegistration)
+//
+// Tech detail: These classes need to be a single hierarchy so that
+// `ThreadRegistration` can contain the most-derived class, and from there can
+// publish references to base classes without relying on Undefined Behavior.
+// (It's not allowed to have some object and give a reference to a sub-class,
+// unless that object was *really* constructed as that sub-class at least, even
+// if that sub-class only adds member functions!)
+// And where appropriate, these references will come along with the required
+// lock.
+
+#ifndef ProfilerThreadRegistrationData_h
+#define ProfilerThreadRegistrationData_h
+
+#include "js/ProfilingFrameIterator.h"
+#include "js/ProfilingStack.h"
+#include "mozilla/Atomics.h"
+#include "mozilla/BaseProfilerDetail.h"
+#include "mozilla/MemoryReporting.h"
+#include "mozilla/ProfilerThreadPlatformData.h"
+#include "mozilla/ProfilerThreadRegistrationInfo.h"
+#include "nsCOMPtr.h"
+#include "nsIThread.h"
+
+class ProfiledThreadData;
+class PSAutoLock;
+struct JSContext;
+
+// Enum listing which profiling features are active for a single thread.
+enum class ThreadProfilingFeatures : uint32_t {
+ // The thread is not being profiled at all (either the profiler is not
+ // running, or this thread is not examined during profiling.)
+ NotProfiled = 0u,
+
+ // Single features, binary exclusive. May be `Combine()`d.
+ CPUUtilization = 1u << 0,
+ Sampling = 1u << 1,
+ Markers = 1u << 2,
+
+ // All possible features. Usually used as a mask to see if any feature is
+ // active at a given time.
+ Any = CPUUtilization | Sampling | Markers
+};
+
+// Binary OR of one of more ThreadProfilingFeatures, to mix all arguments.
+template <typename... Ts>
+[[nodiscard]] constexpr ThreadProfilingFeatures Combine(
+ ThreadProfilingFeatures a1, Ts... as) {
+ static_assert((true && ... &&
+ std::is_same_v<std::remove_cv_t<std::remove_reference_t<Ts>>,
+ ThreadProfilingFeatures>));
+ return static_cast<ThreadProfilingFeatures>(
+ (static_cast<std::underlying_type_t<ThreadProfilingFeatures>>(a1) | ... |
+ static_cast<std::underlying_type_t<ThreadProfilingFeatures>>(as)));
+}
+
+// Binary AND of one of more ThreadProfilingFeatures, to find features common to
+// all arguments.
+template <typename... Ts>
+[[nodiscard]] constexpr ThreadProfilingFeatures Intersect(
+ ThreadProfilingFeatures a1, Ts... as) {
+ static_assert((true && ... &&
+ std::is_same_v<std::remove_cv_t<std::remove_reference_t<Ts>>,
+ ThreadProfilingFeatures>));
+ return static_cast<ThreadProfilingFeatures>(
+ (static_cast<std::underlying_type_t<ThreadProfilingFeatures>>(a1) & ... &
+ static_cast<std::underlying_type_t<ThreadProfilingFeatures>>(as)));
+}
+
+// Are there features in common between the two given sets?
+// Mostly useful to test if any of a set of features is present in another set.
+template <typename... Ts>
+[[nodiscard]] constexpr bool DoFeaturesIntersect(ThreadProfilingFeatures a1,
+ ThreadProfilingFeatures a2) {
+ return Intersect(a1, a2) != ThreadProfilingFeatures::NotProfiled;
+}
+
+namespace mozilla::profiler {
+
+// All data members related to thread profiling are stored here.
+// See derived classes below, which give limited unlocked/locked read/write
+// access in different situations, and will be available through
+// ThreadRegistration and ThreadRegistry.
+class ThreadRegistrationData {
+ public:
+ // No public accessors here. See derived classes for accessors, and
+ // Get.../With... functions for who can use these accessors.
+
+ size_t SizeOfExcludingThis(MallocSizeOf aMallocSizeOf) const {
+ // Not including data that is not fully owned here.
+ return 0;
+ }
+
+ size_t SizeOfIncludingThis(MallocSizeOf aMallocSizeOf) const {
+ return aMallocSizeOf(this) + SizeOfExcludingThis(aMallocSizeOf);
+ }
+
+ static constexpr size_t MAX_JS_FRAMES = 1024;
+ using JsFrame = JS::ProfilingFrameIterator::Frame;
+ using JsFrameBuffer = JsFrame[MAX_JS_FRAMES];
+
+ // `protected` to allow derived classes to read all data members.
+ protected:
+ ThreadRegistrationData(const char* aName, const void* aStackTop);
+
+#ifdef DEBUG
+ // Destructor only used to check invariants.
+ ~ThreadRegistrationData() {
+ MOZ_ASSERT((mProfilingFeatures != ThreadProfilingFeatures::NotProfiled) ==
+ !!mProfiledThreadData);
+ MOZ_ASSERT(!mProfiledThreadData,
+ "mProfiledThreadData pointer should have been reset before "
+ "~ThreadRegistrationData");
+ }
+#endif // DEBUG
+
+ // Permanent thread information.
+ // Set at construction, read from anywhere, moved-from at destruction.
+ ThreadRegistrationInfo mInfo;
+
+ // Contains profiler labels and JS frames.
+ // Deep-written on thread only, deep-read from thread and suspended thread.
+ ProfilingStack mProfilingStack;
+
+ // In practice, only read from thread and suspended thread.
+ PlatformData mPlatformData;
+
+ // Only read from thread and suspended thread.
+ const void* const mStackTop;
+
+ // Written from thread, read from thread and suspended thread.
+ nsCOMPtr<nsIThread> mThread;
+
+ // If this is a JS thread, this is its JSContext, which is required for any
+ // JS sampling.
+ // Written from thread, read from thread and suspended thread.
+ JSContext* mJSContext = nullptr;
+
+ // If mJSContext is not null AND the thread is being profiled, this points at
+ // the start of a JsFrameBuffer to be used for on-thread synchronous sampling.
+ JsFrame* mJsFrameBuffer = nullptr;
+
+ // The profiler needs to start and stop JS sampling of JS threads at various
+ // times. However, the JS engine can only do the required actions on the
+ // JS thread itself ("on-thread"), not from another thread ("off-thread").
+ // Therefore, we have the following two-step process.
+ //
+ // - The profiler requests (on-thread or off-thread) that the JS sampling be
+ // started/stopped, by changing mJSSampling to the appropriate REQUESTED
+ // state.
+ //
+ // - The relevant JS thread polls (on-thread) for changes to mJSSampling.
+ // When it sees a REQUESTED state, it performs the appropriate actions to
+ // actually start/stop JS sampling, and changes mJSSampling out of the
+ // REQUESTED state.
+ //
+ // The state machine is as follows.
+ //
+ // INACTIVE --> ACTIVE_REQUESTED
+ // ^ ^ |
+ // | _/ |
+ // | _/ |
+ // | / |
+ // | v v
+ // INACTIVE_REQUESTED <-- ACTIVE
+ //
+ // The polling is done in the following two ways.
+ //
+ // - Via the interrupt callback mechanism; the JS thread must call
+ // profiler_js_interrupt_callback() from its own interrupt callback.
+ // This is how sampling must be started/stopped for threads where the
+ // request was made off-thread.
+ //
+ // - When {Start,Stop}JSSampling() is called on-thread, we can immediately
+ // follow it with a PollJSSampling() call to avoid the delay between the
+ // two steps. Likewise, setJSContext() calls PollJSSampling().
+ //
+ // One non-obvious thing about all this: these JS sampling requests are made
+ // on all threads, even non-JS threads. mContext needs to also be set (via
+ // setJSContext(), which can only happen for JS threads) for any JS sampling
+ // to actually happen.
+ //
+ enum {
+ INACTIVE = 0,
+ ACTIVE_REQUESTED = 1,
+ ACTIVE = 2,
+ INACTIVE_REQUESTED = 3,
+ } mJSSampling = INACTIVE;
+
+ uint32_t mJSFlags = 0;
+
+ // Flags to conveniently track various JS instrumentations.
+ enum class JSInstrumentationFlags {
+ StackSampling = 0x1,
+ Allocations = 0x2,
+ };
+
+ [[nodiscard]] bool JSAllocationsEnabled() const {
+ return mJSFlags & uint32_t(JSInstrumentationFlags::Allocations);
+ }
+
+ // The following members may be modified from another thread.
+ // They need to be atomic, because LockData() does not prevent reads from
+ // the owning thread.
+
+ // mSleep tracks whether the thread is sleeping, and if so, whether it has
+ // been previously observed. This is used for an optimization: in some
+ // cases, when a thread is asleep, we duplicate the previous sample, which
+ // is cheaper than taking a new sample.
+ //
+ // mSleep is atomic because it is accessed from multiple threads.
+ //
+ // - It is written only by this thread, via setSleeping() and setAwake().
+ //
+ // - It is read by SamplerThread::Run().
+ //
+ // There are two cases where racing between threads can cause an issue.
+ //
+ // - If CanDuplicateLastSampleDueToSleep() returns false but that result is
+ // invalidated before being acted upon, we will take a full sample
+ // unnecessarily. This is additional work but won't cause any correctness
+ // issues. (In actual fact, this case is impossible. In order to go from
+ // CanDuplicateLastSampleDueToSleep() returning false to it returning true
+ // requires an intermediate call to it in order for mSleep to go from
+ // SLEEPING_NOT_OBSERVED to SLEEPING_OBSERVED.)
+ //
+ // - If CanDuplicateLastSampleDueToSleep() returns true but that result is
+ // invalidated before being acted upon -- i.e. the thread wakes up before
+ // DuplicateLastSample() is called -- we will duplicate the previous
+ // sample. This is inaccurate, but only slightly... we will effectively
+ // treat the thread as having slept a tiny bit longer than it really did.
+ //
+ // This latter inaccuracy could be avoided by moving the
+ // CanDuplicateLastSampleDueToSleep() check within the thread-freezing code,
+ // e.g. the section where Tick() is called. But that would reduce the
+ // effectiveness of the optimization because more code would have to be run
+ // before we can tell that duplication is allowed.
+ //
+ static const int AWAKE = 0;
+ static const int SLEEPING_NOT_OBSERVED = 1;
+ static const int SLEEPING_OBSERVED = 2;
+ // Read&written from thread and suspended thread.
+ Atomic<int> mSleep{AWAKE};
+ Atomic<uint64_t> mThreadCpuTimeInNsAtLastSleep{0};
+
+#ifdef NIGHTLY_BUILD
+ // The first wake is the thread creation.
+ Atomic<uint64_t, MemoryOrdering::Relaxed> mWakeCount{1};
+ mutable baseprofiler::detail::BaseProfilerMutex mRecordWakeCountMutex;
+ mutable uint64_t mAlreadyRecordedWakeCount = 0;
+ mutable uint64_t mAlreadyRecordedCpuTimeInMs = 0;
+#endif
+
+ // Is this thread currently being profiled, and with which features?
+ // Written from profiler, read from any thread.
+ // Invariant: `!!mProfilingFeatures == !!mProfiledThreadData` (set together.)
+ Atomic<ThreadProfilingFeatures, MemoryOrdering::Relaxed> mProfilingFeatures{
+ ThreadProfilingFeatures::NotProfiled};
+
+ // If the profiler is active and this thread is selected for profiling, this
+ // points at the relevant ProfiledThreadData.
+ // Fully controlled by the profiler.
+ // Invariant: `!!mProfilingFeatures == !!mProfiledThreadData` (set together).
+ ProfiledThreadData* mProfiledThreadData = nullptr;
+};
+
+// Accessing const data from any thread.
+class ThreadRegistrationUnlockedConstReader : public ThreadRegistrationData {
+ public:
+ [[nodiscard]] const ThreadRegistrationInfo& Info() const { return mInfo; }
+
+ [[nodiscard]] const PlatformData& PlatformDataCRef() const {
+ return mPlatformData;
+ }
+
+ [[nodiscard]] const void* StackTop() const { return mStackTop; }
+
+ protected:
+ ThreadRegistrationUnlockedConstReader(const char* aName,
+ const void* aStackTop)
+ : ThreadRegistrationData(aName, aStackTop) {}
+};
+
+// Accessing atomic data from any thread.
+class ThreadRegistrationUnlockedConstReaderAndAtomicRW
+ : public ThreadRegistrationUnlockedConstReader {
+ public:
+ [[nodiscard]] const ProfilingStack& ProfilingStackCRef() const {
+ return mProfilingStack;
+ }
+ [[nodiscard]] ProfilingStack& ProfilingStackRef() { return mProfilingStack; }
+
+ // Similar to `profiler_is_active()`, this atomic flag may become out-of-date.
+ // It should only be used as an indication to know whether this thread is
+ // probably being profiled (with some specific features), to avoid doing
+ // expensive operations otherwise. Edge cases:
+ // - This thread could get `NotProfiled`, but the profiler has just started,
+ // so some very early data may be missing. No real impact on profiling.
+ // - This thread could see profiled features, but the profiled has just
+ // stopped, so some some work will be done and then discarded when finally
+ // attempting to write to the buffer. No impact on profiling.
+ // - This thread could see profiled features, but the profiler will quickly
+ // stop and restart, so this thread will write information relevant to the
+ // previous profiling session. Very rare, and little impact on profiling.
+ [[nodiscard]] ThreadProfilingFeatures ProfilingFeatures() const {
+ return mProfilingFeatures;
+ }
+
+ // Call this whenever the current thread sleeps. Calling it twice in a row
+ // without an intervening setAwake() call is an error.
+ void SetSleeping() {
+ MOZ_ASSERT(mSleep == AWAKE);
+ mSleep = SLEEPING_NOT_OBSERVED;
+ }
+
+ // Call this whenever the current thread wakes. Calling it twice in a row
+ // without an intervening setSleeping() call is an error.
+ void SetAwake() {
+ MOZ_ASSERT(mSleep != AWAKE);
+ mSleep = AWAKE;
+#ifdef NIGHTLY_BUILD
+ ++mWakeCount;
+#endif
+ }
+
+ // Returns the CPU time used by the thread since the previous call to this
+ // method or since the thread was started if this is the first call.
+ uint64_t GetNewCpuTimeInNs() {
+ uint64_t newCpuTimeNs;
+ if (!GetCpuTimeSinceThreadStartInNs(&newCpuTimeNs, PlatformDataCRef())) {
+ newCpuTimeNs = 0;
+ }
+ uint64_t before = mThreadCpuTimeInNsAtLastSleep;
+ uint64_t result =
+ MOZ_LIKELY(newCpuTimeNs > before) ? newCpuTimeNs - before : 0;
+ mThreadCpuTimeInNsAtLastSleep = newCpuTimeNs;
+ return result;
+ }
+
+#ifdef NIGHTLY_BUILD
+ void RecordWakeCount() const;
+#endif
+
+ // This is called on every profiler restart. Put things that should happen
+ // at that time here.
+ void ReinitializeOnResume() {
+ // This is needed to cause an initial sample to be taken from sleeping
+ // threads that had been observed prior to the profiler stopping and
+ // restarting. Otherwise sleeping threads would not have any samples to
+ // copy forward while sleeping.
+ (void)mSleep.compareExchange(SLEEPING_OBSERVED, SLEEPING_NOT_OBSERVED);
+ }
+
+ // This returns true for the second and subsequent calls in each sleep
+ // cycle, so that the sampler can skip its full sampling and reuse the first
+ // asleep sample instead.
+ [[nodiscard]] bool CanDuplicateLastSampleDueToSleep() {
+ if (mSleep == AWAKE) {
+ return false;
+ }
+ if (mSleep.compareExchange(SLEEPING_NOT_OBSERVED, SLEEPING_OBSERVED)) {
+ return false;
+ }
+ return true;
+ }
+
+ [[nodiscard]] bool IsSleeping() const { return mSleep != AWAKE; }
+
+ protected:
+ ThreadRegistrationUnlockedConstReaderAndAtomicRW(const char* aName,
+ const void* aStackTop)
+ : ThreadRegistrationUnlockedConstReader(aName, aStackTop) {}
+};
+
+// Like above, with special PSAutoLock-guarded accessors.
+class ThreadRegistrationUnlockedRWForLockedProfiler
+ : public ThreadRegistrationUnlockedConstReaderAndAtomicRW {
+ public:
+ // IMPORTANT! IMPORTANT! IMPORTANT! IMPORTANT! IMPORTANT! IMPORTANT!
+ // Only add functions that take a `const PSAutoLock&` proof-of-lock.
+ // (Because there is no other lock.)
+
+ [[nodiscard]] const ProfiledThreadData* GetProfiledThreadData(
+ const PSAutoLock&) const {
+ return mProfiledThreadData;
+ }
+
+ [[nodiscard]] ProfiledThreadData* GetProfiledThreadData(const PSAutoLock&) {
+ return mProfiledThreadData;
+ }
+
+ protected:
+ ThreadRegistrationUnlockedRWForLockedProfiler(const char* aName,
+ const void* aStackTop)
+ : ThreadRegistrationUnlockedConstReaderAndAtomicRW(aName, aStackTop) {}
+};
+
+// Reading data, unlocked from the thread, or locked otherwise.
+// This data MUST only be written from the thread with lock (i.e., in
+// LockedRWOnThread through RWOnThreadWithLock.)
+class ThreadRegistrationUnlockedReaderAndAtomicRWOnThread
+ : public ThreadRegistrationUnlockedRWForLockedProfiler {
+ public:
+ // IMPORTANT! IMPORTANT! IMPORTANT! IMPORTANT! IMPORTANT! IMPORTANT!
+ // Non-atomic members read here MUST be written from LockedRWOnThread (to
+ // guarantee that they are only modified on this thread.)
+
+ [[nodiscard]] JSContext* GetJSContext() const { return mJSContext; }
+
+ protected:
+ ThreadRegistrationUnlockedReaderAndAtomicRWOnThread(const char* aName,
+ const void* aStackTop)
+ : ThreadRegistrationUnlockedRWForLockedProfiler(aName, aStackTop) {}
+};
+
+// Accessing locked data from the thread, or from any thread through the locked
+// profiler:
+
+// Like above, and profiler can also read&write mutex-protected members.
+class ThreadRegistrationLockedRWFromAnyThread
+ : public ThreadRegistrationUnlockedReaderAndAtomicRWOnThread {
+ public:
+ void SetProfilingFeaturesAndData(ThreadProfilingFeatures aProfilingFeatures,
+ ProfiledThreadData* aProfiledThreadData,
+ const PSAutoLock&);
+ void ClearProfilingFeaturesAndData(const PSAutoLock&);
+
+ // Not null when JSContext is not null AND this thread is being profiled.
+ // Points at the start of JsFrameBuffer.
+ [[nodiscard]] JsFrame* GetJsFrameBuffer() const { return mJsFrameBuffer; }
+
+ [[nodiscard]] const nsCOMPtr<nsIEventTarget> GetEventTarget() const {
+ return mThread;
+ }
+
+ void ResetMainThread(nsIThread* aThread) { mThread = aThread; }
+
+ // aDelay is the time the event that is currently running on the thread was
+ // queued before starting to run (if a PrioritizedEventQueue
+ // (i.e. MainThread), this will be 0 for any event at a lower priority
+ // than Input).
+ // aRunning is the time the event has been running. If no event is running
+ // these will both be TimeDuration() (i.e. 0). Both are out params, and are
+ // always set. Their initial value is discarded.
+ void GetRunningEventDelay(const TimeStamp& aNow, TimeDuration& aDelay,
+ TimeDuration& aRunning) {
+ if (mThread) { // can be null right at the start of a process
+ TimeStamp start;
+ mThread->GetRunningEventDelay(&aDelay, &start);
+ if (!start.IsNull()) {
+ // Note: the timestamp used here will be from when we started to
+ // suspend and sample the thread; which is also the timestamp
+ // associated with the sample.
+ aRunning = aNow - start;
+ return;
+ }
+ }
+ aDelay = TimeDuration();
+ aRunning = TimeDuration();
+ }
+
+ // Request that this thread start JS sampling. JS sampling won't actually
+ // start until a subsequent PollJSSampling() call occurs *and* mContext has
+ // been set.
+ void StartJSSampling(uint32_t aJSFlags) {
+ // This function runs on-thread or off-thread.
+
+ MOZ_RELEASE_ASSERT(mJSSampling == INACTIVE ||
+ mJSSampling == INACTIVE_REQUESTED);
+ mJSSampling = ACTIVE_REQUESTED;
+ mJSFlags = aJSFlags;
+ }
+
+ // Request that this thread stop JS sampling. JS sampling won't actually
+ // stop until a subsequent PollJSSampling() call occurs.
+ void StopJSSampling() {
+ // This function runs on-thread or off-thread.
+
+ MOZ_RELEASE_ASSERT(mJSSampling == ACTIVE ||
+ mJSSampling == ACTIVE_REQUESTED);
+ mJSSampling = INACTIVE_REQUESTED;
+ }
+
+ protected:
+ ThreadRegistrationLockedRWFromAnyThread(const char* aName,
+ const void* aStackTop)
+ : ThreadRegistrationUnlockedReaderAndAtomicRWOnThread(aName, aStackTop) {}
+};
+
+// Accessing data, locked, from the thread.
+// If any non-atomic data is readable from UnlockedReaderAndAtomicRWOnThread,
+// it must be written from here, and not in base classes: Since this data is
+// only written on the thread, it can be read from the same thread without
+// lock; but writing must be locked so that other threads can safely read it,
+// typically from LockedRWFromAnyThread.
+class ThreadRegistrationLockedRWOnThread
+ : public ThreadRegistrationLockedRWFromAnyThread {
+ public:
+ void SetJSContext(JSContext* aJSContext);
+ void ClearJSContext();
+
+ // Poll to see if JS sampling should be started/stopped.
+ void PollJSSampling();
+
+ public:
+ ThreadRegistrationLockedRWOnThread(const char* aName, const void* aStackTop)
+ : ThreadRegistrationLockedRWFromAnyThread(aName, aStackTop) {}
+};
+
+} // namespace mozilla::profiler
+
+#endif // ProfilerThreadRegistrationData_h
diff --git a/tools/profiler/public/ProfilerThreadRegistrationInfo.h b/tools/profiler/public/ProfilerThreadRegistrationInfo.h
new file mode 100644
index 0000000000..e116c3059e
--- /dev/null
+++ b/tools/profiler/public/ProfilerThreadRegistrationInfo.h
@@ -0,0 +1,64 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef ProfilerThreadRegistrationInfo_h
+#define ProfilerThreadRegistrationInfo_h
+
+#include "mozilla/BaseAndGeckoProfilerDetail.h"
+#include "mozilla/ProfilerUtils.h"
+#include "mozilla/TimeStamp.h"
+
+#include <string>
+
+namespace mozilla::profiler {
+
+// This class contains immutable information about a thread which needs to be
+// stored across restarts of the profiler and which can be useful even after the
+// thread has stopped running.
+class ThreadRegistrationInfo {
+ public:
+ // Construct on the thread.
+ explicit ThreadRegistrationInfo(const char* aName) : mName(aName) {}
+
+ // Construct for a foreign thread (e.g., Java).
+ ThreadRegistrationInfo(const char* aName, ProfilerThreadId aThreadId,
+ bool aIsMainThread, const TimeStamp& aRegisterTime)
+ : mName(aName),
+ mRegisterTime(aRegisterTime),
+ mThreadId(aThreadId),
+ mIsMainThread(aIsMainThread) {}
+
+ // Only allow move construction, for extraction when the thread ends.
+ ThreadRegistrationInfo(ThreadRegistrationInfo&&) = default;
+
+ // Other copies/moves disallowed.
+ ThreadRegistrationInfo(const ThreadRegistrationInfo&) = delete;
+ ThreadRegistrationInfo& operator=(const ThreadRegistrationInfo&) = delete;
+ ThreadRegistrationInfo& operator=(ThreadRegistrationInfo&&) = delete;
+
+ [[nodiscard]] const char* Name() const { return mName.c_str(); }
+ [[nodiscard]] const TimeStamp& RegisterTime() const { return mRegisterTime; }
+ [[nodiscard]] ProfilerThreadId ThreadId() const { return mThreadId; }
+ [[nodiscard]] bool IsMainThread() const { return mIsMainThread; }
+
+ private:
+ static TimeStamp ExistingRegisterTimeOrNow() {
+ TimeStamp registerTime = baseprofiler::detail::GetThreadRegistrationTime();
+ if (!registerTime) {
+ registerTime = TimeStamp::Now();
+ }
+ return registerTime;
+ }
+
+ const std::string mName;
+ const TimeStamp mRegisterTime = ExistingRegisterTimeOrNow();
+ const ProfilerThreadId mThreadId = profiler_current_thread_id();
+ const bool mIsMainThread = profiler_is_main_thread();
+};
+
+} // namespace mozilla::profiler
+
+#endif // ProfilerThreadRegistrationInfo_h
diff --git a/tools/profiler/public/ProfilerThreadRegistry.h b/tools/profiler/public/ProfilerThreadRegistry.h
new file mode 100644
index 0000000000..4d0fd3ef68
--- /dev/null
+++ b/tools/profiler/public/ProfilerThreadRegistry.h
@@ -0,0 +1,321 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef ProfilerThreadRegistry_h
+#define ProfilerThreadRegistry_h
+
+#include "mozilla/BaseProfilerDetail.h"
+#include "mozilla/ProfilerThreadRegistration.h"
+#include "mozilla/Vector.h"
+
+namespace mozilla::profiler {
+
+class ThreadRegistry {
+ private:
+ using RegistryMutex = baseprofiler::detail::BaseProfilerSharedMutex;
+ using RegistryLockExclusive =
+ baseprofiler::detail::BaseProfilerAutoLockExclusive;
+ using RegistryLockShared = baseprofiler::detail::BaseProfilerAutoLockShared;
+
+ public:
+ // Aliases to data accessors (removing the ThreadRegistration prefix).
+
+ using UnlockedConstReader = ThreadRegistrationUnlockedConstReader;
+ using UnlockedConstReaderAndAtomicRW =
+ ThreadRegistrationUnlockedConstReaderAndAtomicRW;
+ using UnlockedRWForLockedProfiler =
+ ThreadRegistrationUnlockedRWForLockedProfiler;
+ using UnlockedReaderAndAtomicRWOnThread =
+ ThreadRegistrationUnlockedReaderAndAtomicRWOnThread;
+ using LockedRWFromAnyThread = ThreadRegistrationLockedRWFromAnyThread;
+ using LockedRWOnThread = ThreadRegistrationLockedRWOnThread;
+
+ // Off-thread access through the registry, providing the following data
+ // accessors: UnlockedConstReader, UnlockedConstReaderAndAtomicRW,
+ // UnlockedRWForLockedProfiler, and LockedRWFromAnyThread.
+ // (See ThreadRegistration class for ON-thread access.)
+
+ // Reference-like class pointing at a ThreadRegistration.
+ // It should only exist while sRegistryMutex is locked.
+ class OffThreadRef {
+ public:
+ // const UnlockedConstReader
+
+ [[nodiscard]] const UnlockedConstReader& UnlockedConstReaderCRef() const {
+ return mThreadRegistration->mData;
+ }
+
+ template <typename F>
+ auto WithUnlockedConstReader(F&& aF) const {
+ return std::forward<F>(aF)(UnlockedConstReaderCRef());
+ }
+
+ // const UnlockedConstReaderAndAtomicRW
+
+ [[nodiscard]] const UnlockedConstReaderAndAtomicRW&
+ UnlockedConstReaderAndAtomicRWCRef() const {
+ return mThreadRegistration->mData;
+ }
+
+ template <typename F>
+ auto WithUnlockedConstReaderAndAtomicRW(F&& aF) const {
+ return std::forward<F>(aF)(UnlockedConstReaderAndAtomicRWCRef());
+ }
+
+ // UnlockedConstReaderAndAtomicRW
+
+ [[nodiscard]] UnlockedConstReaderAndAtomicRW&
+ UnlockedConstReaderAndAtomicRWRef() {
+ return mThreadRegistration->mData;
+ }
+
+ template <typename F>
+ auto WithUnlockedConstReaderAndAtomicRW(F&& aF) {
+ return std::forward<F>(aF)(UnlockedConstReaderAndAtomicRWRef());
+ }
+
+ // const UnlockedRWForLockedProfiler
+
+ [[nodiscard]] const UnlockedRWForLockedProfiler&
+ UnlockedRWForLockedProfilerCRef() const {
+ return mThreadRegistration->mData;
+ }
+
+ template <typename F>
+ auto WithUnlockedRWForLockedProfiler(F&& aF) const {
+ return std::forward<F>(aF)(UnlockedRWForLockedProfilerCRef());
+ }
+
+ // UnlockedRWForLockedProfiler
+
+ [[nodiscard]] UnlockedRWForLockedProfiler&
+ UnlockedRWForLockedProfilerRef() {
+ return mThreadRegistration->mData;
+ }
+
+ template <typename F>
+ auto WithUnlockedRWForLockedProfiler(F&& aF) {
+ return std::forward<F>(aF)(UnlockedRWForLockedProfilerRef());
+ }
+
+ // const LockedRWFromAnyThread through ConstRWFromAnyThreadWithLock
+
+ class ConstRWFromAnyThreadWithLock {
+ public:
+ [[nodiscard]] const LockedRWFromAnyThread& DataCRef() const {
+ return mLockedRWFromAnyThread;
+ }
+ [[nodiscard]] const LockedRWFromAnyThread* operator->() const {
+ return &mLockedRWFromAnyThread;
+ }
+
+ ConstRWFromAnyThreadWithLock(
+ const LockedRWFromAnyThread& aLockedRWFromAnyThread,
+ ThreadRegistration::DataMutex& aDataMutex)
+ : mLockedRWFromAnyThread(aLockedRWFromAnyThread),
+ mDataLock(aDataMutex) {}
+
+ private:
+ const LockedRWFromAnyThread& mLockedRWFromAnyThread;
+ ThreadRegistration::DataLock mDataLock;
+ };
+
+ [[nodiscard]] ConstRWFromAnyThreadWithLock ConstLockedRWFromAnyThread()
+ const {
+ return ConstRWFromAnyThreadWithLock{mThreadRegistration->mData,
+ mThreadRegistration->mDataMutex};
+ }
+
+ template <typename F>
+ auto WithConstLockedRWFromAnyThread(F&& aF) const {
+ ConstRWFromAnyThreadWithLock lockedData = ConstLockedRWFromAnyThread();
+ return std::forward<F>(aF)(lockedData.DataCRef());
+ }
+
+ // LockedRWFromAnyThread through RWFromAnyThreadWithLock
+
+ class RWFromAnyThreadWithLock {
+ public:
+ [[nodiscard]] const LockedRWFromAnyThread& DataCRef() const {
+ return mLockedRWFromAnyThread;
+ }
+ [[nodiscard]] LockedRWFromAnyThread& DataRef() {
+ return mLockedRWFromAnyThread;
+ }
+ [[nodiscard]] const LockedRWFromAnyThread* operator->() const {
+ return &mLockedRWFromAnyThread;
+ }
+ [[nodiscard]] LockedRWFromAnyThread* operator->() {
+ return &mLockedRWFromAnyThread;
+ }
+
+ // In some situations, it may be useful to do some on-thread operations if
+ // we are indeed on this thread now. The lock is still held here; caller
+ // should not use this pointer longer than this RWFromAnyThreadWithLock.
+ [[nodiscard]] LockedRWOnThread* GetLockedRWOnThread() {
+ if (mLockedRWFromAnyThread.Info().ThreadId() ==
+ profiler_current_thread_id()) {
+ // mLockedRWFromAnyThread references a subclass of the
+ // ThreadRegistration's mData, so it's safe to downcast it to another
+ // hierarchy level of the object.
+ return &static_cast<LockedRWOnThread&>(mLockedRWFromAnyThread);
+ }
+ return nullptr;
+ }
+
+ private:
+ friend class OffThreadRef;
+ RWFromAnyThreadWithLock(LockedRWFromAnyThread& aLockedRWFromAnyThread,
+ ThreadRegistration::DataMutex& aDataMutex)
+ : mLockedRWFromAnyThread(aLockedRWFromAnyThread),
+ mDataLock(aDataMutex) {}
+
+ LockedRWFromAnyThread& mLockedRWFromAnyThread;
+ ThreadRegistration::DataLock mDataLock;
+ };
+
+ [[nodiscard]] RWFromAnyThreadWithLock GetLockedRWFromAnyThread() {
+ return RWFromAnyThreadWithLock{mThreadRegistration->mData,
+ mThreadRegistration->mDataMutex};
+ }
+
+ template <typename F>
+ auto WithLockedRWFromAnyThread(F&& aF) {
+ RWFromAnyThreadWithLock lockedData = GetLockedRWFromAnyThread();
+ return std::forward<F>(aF)(lockedData.DataRef());
+ }
+
+ private:
+ // Only ThreadRegistry should construct an OnThreadRef.
+ friend class ThreadRegistry;
+ explicit OffThreadRef(ThreadRegistration& aThreadRegistration)
+ : mThreadRegistration(&aThreadRegistration) {}
+
+ // If we have an ON-thread ref, it's safe to convert to an OFF-thread ref.
+ explicit OffThreadRef(ThreadRegistration::OnThreadRef aOnThreadRef)
+ : mThreadRegistration(aOnThreadRef.mThreadRegistration) {}
+
+ [[nodiscard]] bool IsPointingAt(
+ ThreadRegistration& aThreadRegistration) const {
+ return mThreadRegistration == &aThreadRegistration;
+ }
+
+ // Guaranted to be non-null by construction.
+ ThreadRegistration* mThreadRegistration;
+ };
+
+ // Lock the registry non-exclusively and allow iteration. E.g.:
+ // `for (OffThreadRef thread : LockedRegistry{}) { ... }`
+ // Do *not* export copies/references, as they could become dangling.
+ // Locking order: Profiler, ThreadRegistry, ThreadRegistration.
+ class LockedRegistry {
+ public:
+ LockedRegistry()
+ : mRegistryLock([]() -> RegistryMutex& {
+ MOZ_ASSERT(!IsRegistryMutexLockedOnCurrentThread(),
+ "Recursive locking detected");
+ // In DEBUG builds, *before* we attempt to lock sRegistryMutex, we
+ // want to check that the ThreadRegistration mutex is *not* locked
+ // on this thread, to avoid inversion deadlocks.
+ MOZ_ASSERT(!ThreadRegistration::IsDataMutexLockedOnCurrentThread());
+ return sRegistryMutex;
+ }()) {
+ ThreadRegistration::WithOnThreadRef(
+ [](ThreadRegistration::OnThreadRef aOnThreadRef) {
+ aOnThreadRef.mThreadRegistration
+ ->mIsRegistryLockedSharedOnThisThread = true;
+ });
+ }
+
+ ~LockedRegistry() {
+ ThreadRegistration::WithOnThreadRef(
+ [](ThreadRegistration::OnThreadRef aOnThreadRef) {
+ aOnThreadRef.mThreadRegistration
+ ->mIsRegistryLockedSharedOnThisThread = false;
+ });
+ }
+
+ [[nodiscard]] const OffThreadRef* begin() const {
+ return sRegistryContainer.begin();
+ }
+ [[nodiscard]] OffThreadRef* begin() { return sRegistryContainer.begin(); }
+ [[nodiscard]] const OffThreadRef* end() const {
+ return sRegistryContainer.end();
+ }
+ [[nodiscard]] OffThreadRef* end() { return sRegistryContainer.end(); }
+
+ private:
+ RegistryLockShared mRegistryLock;
+ };
+
+ // Call `F(OffThreadRef)` for the given aThreadId.
+ template <typename F>
+ static void WithOffThreadRef(ProfilerThreadId aThreadId, F&& aF) {
+ for (OffThreadRef thread : LockedRegistry{}) {
+ if (thread.UnlockedConstReaderCRef().Info().ThreadId() == aThreadId) {
+ std::forward<F>(aF)(thread);
+ break;
+ }
+ }
+ }
+
+ template <typename F, typename FallbackReturn>
+ [[nodiscard]] static auto WithOffThreadRefOr(ProfilerThreadId aThreadId,
+ F&& aF,
+ FallbackReturn&& aFallbackReturn)
+ -> decltype(std::forward<F>(aF)(std::declval<OffThreadRef>())) {
+ for (OffThreadRef thread : LockedRegistry{}) {
+ if (thread.UnlockedConstReaderCRef().Info().ThreadId() == aThreadId) {
+ return std::forward<F>(aF)(thread);
+ }
+ }
+ return std::forward<FallbackReturn>(aFallbackReturn);
+ }
+
+ static size_t SizeOfExcludingThis(MallocSizeOf aMallocSizeOf) {
+ LockedRegistry lockedRegistry;
+ // "Ex" because we don't count static objects, but we count whatever they
+ // allocated on the heap.
+ size_t bytes = sRegistryContainer.sizeOfExcludingThis(aMallocSizeOf);
+ for (const OffThreadRef& offThreadRef : lockedRegistry) {
+ bytes +=
+ offThreadRef.mThreadRegistration->SizeOfExcludingThis(aMallocSizeOf);
+ }
+ return bytes;
+ }
+
+ static size_t SizeOfIncludingThis(MallocSizeOf aMallocSizeOf) {
+ return SizeOfExcludingThis(aMallocSizeOf);
+ }
+
+ [[nodiscard]] static bool IsRegistryMutexLockedOnCurrentThread() {
+ return sRegistryMutex.IsLockedExclusiveOnCurrentThread() ||
+ ThreadRegistration::WithOnThreadRefOr(
+ [](ThreadRegistration::OnThreadRef aOnThreadRef) {
+ return aOnThreadRef.mThreadRegistration
+ ->mIsRegistryLockedSharedOnThisThread;
+ },
+ false);
+ }
+
+ private:
+ using RegistryContainer = Vector<OffThreadRef>;
+
+ static RegistryContainer sRegistryContainer;
+
+ // Mutex protecting the registry.
+ // Locking order: Profiler, ThreadRegistry, ThreadRegistration.
+ static RegistryMutex sRegistryMutex;
+
+ // Only allow ThreadRegistration to (un)register itself.
+ friend class ThreadRegistration;
+ static void Register(ThreadRegistration::OnThreadRef aOnThreadRef);
+ static void Unregister(ThreadRegistration::OnThreadRef aOnThreadRef);
+};
+
+} // namespace mozilla::profiler
+
+#endif // ProfilerThreadRegistry_h
diff --git a/tools/profiler/public/ProfilerThreadSleep.h b/tools/profiler/public/ProfilerThreadSleep.h
new file mode 100644
index 0000000000..730176d39f
--- /dev/null
+++ b/tools/profiler/public/ProfilerThreadSleep.h
@@ -0,0 +1,58 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+// APIs that inform the profiler when a thread is effectively asleep so that we
+// can avoid sampling it more than once.
+
+#ifndef ProfilerThreadSleep_h
+#define ProfilerThreadSleep_h
+
+#ifndef MOZ_GECKO_PROFILER
+
+// This file can be #included unconditionally. However, everything within this
+// file must be guarded by a #ifdef MOZ_GECKO_PROFILER, *except* for the
+// following macros and functions, which encapsulate the most common operations
+// and thus avoid the need for many #ifdefs.
+
+# define AUTO_PROFILER_THREAD_SLEEP
+
+static inline void profiler_thread_sleep() {}
+
+static inline void profiler_thread_wake() {}
+
+#else // !MOZ_GECKO_PROFILER
+
+# include "mozilla/Attributes.h"
+# include "mozilla/BaseProfilerRAIIMacro.h"
+
+// These functions tell the profiler that a thread went to sleep so that we can
+// avoid sampling it more than once while it's sleeping. Calling
+// profiler_thread_sleep() twice without an intervening profiler_thread_wake()
+// is an error. All three functions operate the same whether the profiler is
+// active or inactive.
+void profiler_thread_sleep();
+void profiler_thread_wake();
+
+// Mark a thread as asleep within a scope.
+// (See also AUTO_PROFILER_THREAD_WAKE in ProfilerThreadState.h)
+# define AUTO_PROFILER_THREAD_SLEEP \
+ mozilla::AutoProfilerThreadSleep PROFILER_RAII
+
+namespace mozilla {
+
+// (See also AutoProfilerThreadWake in ProfilerThreadState.h)
+class MOZ_RAII AutoProfilerThreadSleep {
+ public:
+ explicit AutoProfilerThreadSleep() { profiler_thread_sleep(); }
+
+ ~AutoProfilerThreadSleep() { profiler_thread_wake(); }
+};
+
+} // namespace mozilla
+
+#endif // !MOZ_GECKO_PROFILER
+
+#endif // ProfilerThreadSleep_h
diff --git a/tools/profiler/public/ProfilerThreadState.h b/tools/profiler/public/ProfilerThreadState.h
new file mode 100644
index 0000000000..6ac48e41dd
--- /dev/null
+++ b/tools/profiler/public/ProfilerThreadState.h
@@ -0,0 +1,128 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+// This header contains functions that give information about the Profiler state
+// with regards to the current thread.
+
+#ifndef ProfilerThreadState_h
+#define ProfilerThreadState_h
+
+#include "mozilla/ProfilerState.h"
+#include "mozilla/ProfilerThreadRegistration.h"
+#include "mozilla/ProfilerThreadRegistry.h"
+#include "mozilla/ProfilerThreadSleep.h"
+
+// During profiling, if the current thread is registered, return true
+// (regardless of whether it is actively being profiled).
+// (Same caveats and recommended usage as profiler_is_active().)
+[[nodiscard]] inline bool profiler_is_active_and_thread_is_registered() {
+ return profiler_is_active() &&
+ mozilla::profiler::ThreadRegistration::IsRegistered();
+}
+
+// Is the profiler active and unpaused, and is the current thread being
+// profiled for any of the given features? (Same caveats and recommended usage
+// as profiler_is_active().)
+[[nodiscard]] inline bool profiler_thread_is_being_profiled(
+ ThreadProfilingFeatures aThreadProfilingFeatures) {
+ return profiler_is_active_and_unpaused() &&
+ mozilla::profiler::ThreadRegistration::WithOnThreadRefOr(
+ [aThreadProfilingFeatures](
+ mozilla::profiler::ThreadRegistration::OnThreadRef aTR) {
+ return DoFeaturesIntersect(
+ aTR.UnlockedConstReaderAndAtomicRWCRef().ProfilingFeatures(),
+ aThreadProfilingFeatures);
+ },
+ false);
+}
+
+// Is the profiler active and unpaused, and is the given thread being profiled?
+// (Same caveats and recommended usage as profiler_is_active().)
+// Safe to use with the current thread id, or unspecified ProfilerThreadId (same
+// as current thread id).
+[[nodiscard]] inline bool profiler_thread_is_being_profiled(
+ const ProfilerThreadId& aThreadId,
+ ThreadProfilingFeatures aThreadProfilingFeatures) {
+ if (!profiler_is_active_and_unpaused()) {
+ return false;
+ }
+
+ if (!aThreadId.IsSpecified() || aThreadId == profiler_current_thread_id()) {
+ // For the current thread id, use the ThreadRegistration directly, it is
+ // more efficient.
+ return mozilla::profiler::ThreadRegistration::WithOnThreadRefOr(
+ [aThreadProfilingFeatures](
+ mozilla::profiler::ThreadRegistration::OnThreadRef aTR) {
+ return DoFeaturesIntersect(
+ aTR.UnlockedConstReaderAndAtomicRWCRef().ProfilingFeatures(),
+ aThreadProfilingFeatures);
+ },
+ false);
+ }
+
+ // For other threads, go through the ThreadRegistry.
+ return mozilla::profiler::ThreadRegistry::WithOffThreadRefOr(
+ aThreadId,
+ [aThreadProfilingFeatures](
+ mozilla::profiler::ThreadRegistry::OffThreadRef aTR) {
+ return DoFeaturesIntersect(
+ aTR.UnlockedConstReaderAndAtomicRWCRef().ProfilingFeatures(),
+ aThreadProfilingFeatures);
+ },
+ false);
+}
+
+// Is the current thread registered and sleeping?
+[[nodiscard]] inline bool profiler_thread_is_sleeping() {
+ return profiler_is_active() &&
+ mozilla::profiler::ThreadRegistration::WithOnThreadRefOr(
+ [](mozilla::profiler::ThreadRegistration::OnThreadRef aTR) {
+ return aTR.UnlockedConstReaderAndAtomicRWCRef().IsSleeping();
+ },
+ false);
+}
+
+#ifndef MOZ_GECKO_PROFILER
+
+# define AUTO_PROFILER_THREAD_WAKE
+
+#else // !MOZ_GECKO_PROFILER
+
+// Mark a thread as awake within a scope.
+// (See also AUTO_PROFILER_THREAD_SLEEP in mozilla/ProfilerThreadSleep.h)
+# define AUTO_PROFILER_THREAD_WAKE \
+ mozilla::AutoProfilerThreadWake PROFILER_RAII
+
+namespace mozilla {
+
+// Temporarily wake up the profiling of a thread while servicing events such as
+// Asynchronous Procedure Calls (APCs).
+// (See also AutoProfilerThreadSleep in ProfilerThreadSleep.h)
+class MOZ_RAII AutoProfilerThreadWake {
+ public:
+ explicit AutoProfilerThreadWake()
+ : mIssuedWake(profiler_thread_is_sleeping()) {
+ if (mIssuedWake) {
+ profiler_thread_wake();
+ }
+ }
+
+ ~AutoProfilerThreadWake() {
+ if (mIssuedWake) {
+ MOZ_ASSERT(!profiler_thread_is_sleeping());
+ profiler_thread_sleep();
+ }
+ }
+
+ private:
+ bool mIssuedWake;
+};
+
+} // namespace mozilla
+
+#endif // !MOZ_GECKO_PROFILER
+
+#endif // ProfilerThreadState_h
diff --git a/tools/profiler/public/ProfilerUtils.h b/tools/profiler/public/ProfilerUtils.h
new file mode 100644
index 0000000000..3969761e18
--- /dev/null
+++ b/tools/profiler/public/ProfilerUtils.h
@@ -0,0 +1,32 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef ProfilerUtils_h
+#define ProfilerUtils_h
+
+// This header contains most process- and thread-related functions.
+// It is safe to include unconditionally.
+
+#include "mozilla/BaseProfilerUtils.h"
+
+using ProfilerProcessId = mozilla::baseprofiler::BaseProfilerProcessId;
+using ProfilerThreadId = mozilla::baseprofiler::BaseProfilerThreadId;
+
+// Get the current process's ID.
+[[nodiscard]] ProfilerProcessId profiler_current_process_id();
+
+// Get the current thread's ID.
+[[nodiscard]] ProfilerThreadId profiler_current_thread_id();
+
+// Must be called at least once from the main thread, before any other main-
+// thread id function.
+void profiler_init_main_thread_id();
+
+[[nodiscard]] ProfilerThreadId profiler_main_thread_id();
+
+[[nodiscard]] bool profiler_is_main_thread();
+
+#endif // ProfilerUtils_h
diff --git a/tools/profiler/public/shared-libraries.h b/tools/profiler/public/shared-libraries.h
new file mode 100644
index 0000000000..dfd3599e71
--- /dev/null
+++ b/tools/profiler/public/shared-libraries.h
@@ -0,0 +1,213 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim:set ts=2 sw=2 sts=2 et cindent: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef SHARED_LIBRARIES_H_
+#define SHARED_LIBRARIES_H_
+
+#ifndef MOZ_GECKO_PROFILER
+# error This header does not have a useful implementation on your platform!
+#endif
+
+#include "nsNativeCharsetUtils.h"
+#include "nsString.h"
+#include <nsID.h>
+
+#include <algorithm>
+#include <stdint.h>
+#include <stdlib.h>
+#include <string>
+#include <vector>
+
+namespace IPC {
+class MessageReader;
+class MessageWriter;
+template <typename T>
+struct ParamTraits;
+} // namespace IPC
+
+class SharedLibrary {
+ public:
+ SharedLibrary(uintptr_t aStart, uintptr_t aEnd, uintptr_t aOffset,
+ const nsCString& aBreakpadId, const nsCString& aCodeId,
+ const nsString& aModuleName, const nsString& aModulePath,
+ const nsString& aDebugName, const nsString& aDebugPath,
+ const nsCString& aVersion, const char* aArch)
+ : mStart(aStart),
+ mEnd(aEnd),
+ mOffset(aOffset),
+ mBreakpadId(aBreakpadId),
+ mCodeId(aCodeId),
+ mModuleName(aModuleName),
+ mModulePath(aModulePath),
+ mDebugName(aDebugName),
+ mDebugPath(aDebugPath),
+ mVersion(aVersion),
+ mArch(aArch) {}
+
+ bool operator==(const SharedLibrary& other) const {
+ return (mStart == other.mStart) && (mEnd == other.mEnd) &&
+ (mOffset == other.mOffset) && (mModuleName == other.mModuleName) &&
+ (mModulePath == other.mModulePath) &&
+ (mDebugName == other.mDebugName) &&
+ (mDebugPath == other.mDebugPath) &&
+ (mBreakpadId == other.mBreakpadId) && (mCodeId == other.mCodeId) &&
+ (mVersion == other.mVersion) && (mArch == other.mArch);
+ }
+
+ uintptr_t GetStart() const { return mStart; }
+ uintptr_t GetEnd() const { return mEnd; }
+ uintptr_t GetOffset() const { return mOffset; }
+ const nsCString& GetBreakpadId() const { return mBreakpadId; }
+ const nsCString& GetCodeId() const { return mCodeId; }
+ const nsString& GetModuleName() const { return mModuleName; }
+ const nsString& GetModulePath() const { return mModulePath; }
+ const std::string GetNativeDebugPath() const {
+ nsAutoCString debugPathStr;
+
+ NS_CopyUnicodeToNative(mDebugPath, debugPathStr);
+
+ return debugPathStr.get();
+ }
+ const nsString& GetDebugName() const { return mDebugName; }
+ const nsString& GetDebugPath() const { return mDebugPath; }
+ const nsCString& GetVersion() const { return mVersion; }
+ const std::string& GetArch() const { return mArch; }
+ size_t SizeOf() const {
+ return sizeof *this + mBreakpadId.Length() + mCodeId.Length() +
+ mModuleName.Length() * 2 + mModulePath.Length() * 2 +
+ mDebugName.Length() * 2 + mDebugPath.Length() * 2 +
+ mVersion.Length() + mArch.size();
+ }
+
+ SharedLibrary() : mStart{0}, mEnd{0}, mOffset{0} {}
+
+ private:
+ uintptr_t mStart;
+ uintptr_t mEnd;
+ uintptr_t mOffset;
+ nsCString mBreakpadId;
+ // A string carrying an identifier for a binary.
+ //
+ // All platforms have different formats:
+ // - Windows: The code ID for a Windows PE file.
+ // It's the PE timestamp and PE image size.
+ // - macOS: The code ID for a macOS / iOS binary (mach-O).
+ // It's the mach-O UUID without dashes and without the trailing 0 for the
+ // breakpad ID.
+ // - Linux/Android: The code ID for a Linux ELF file.
+ // It's the complete build ID, as hex string.
+ nsCString mCodeId;
+ nsString mModuleName;
+ nsString mModulePath;
+ nsString mDebugName;
+ nsString mDebugPath;
+ nsCString mVersion;
+ std::string mArch;
+
+ friend struct IPC::ParamTraits<SharedLibrary>;
+};
+
+static bool CompareAddresses(const SharedLibrary& first,
+ const SharedLibrary& second) {
+ return first.GetStart() < second.GetStart();
+}
+
+class SharedLibraryInfo {
+ public:
+ static SharedLibraryInfo GetInfoForSelf();
+#ifdef XP_WIN
+ static SharedLibraryInfo GetInfoFromPath(const wchar_t* aPath);
+#endif
+
+ static void Initialize();
+
+ void AddSharedLibrary(SharedLibrary entry) { mEntries.push_back(entry); }
+
+ void AddAllSharedLibraries(const SharedLibraryInfo& sharedLibraryInfo) {
+ mEntries.insert(mEntries.end(), sharedLibraryInfo.mEntries.begin(),
+ sharedLibraryInfo.mEntries.end());
+ }
+
+ const SharedLibrary& GetEntry(size_t i) const { return mEntries[i]; }
+
+ SharedLibrary& GetMutableEntry(size_t i) { return mEntries[i]; }
+
+ // Removes items in the range [first, last)
+ // i.e. element at the "last" index is not removed
+ void RemoveEntries(size_t first, size_t last) {
+ mEntries.erase(mEntries.begin() + first, mEntries.begin() + last);
+ }
+
+ bool Contains(const SharedLibrary& searchItem) const {
+ return (mEntries.end() !=
+ std::find(mEntries.begin(), mEntries.end(), searchItem));
+ }
+
+ size_t GetSize() const { return mEntries.size(); }
+
+ void SortByAddress() {
+ std::sort(mEntries.begin(), mEntries.end(), CompareAddresses);
+ }
+
+ // Remove duplicate entries from the vector.
+ //
+ // We purposefully don't use the operator== implementation of SharedLibrary
+ // because it compares all the fields including mStart, mEnd and mOffset which
+ // are not the same across different processes.
+ void DeduplicateEntries() {
+ static auto cmpSort = [](const SharedLibrary& a, const SharedLibrary& b) {
+ return std::tie(a.GetModuleName(), a.GetBreakpadId()) <
+ std::tie(b.GetModuleName(), b.GetBreakpadId());
+ };
+ static auto cmpEqual = [](const SharedLibrary& a, const SharedLibrary& b) {
+ return std::tie(a.GetModuleName(), a.GetBreakpadId()) ==
+ std::tie(b.GetModuleName(), b.GetBreakpadId());
+ };
+ // std::unique requires the vector to be sorted first. It can only remove
+ // consecutive duplicate elements.
+ std::sort(mEntries.begin(), mEntries.end(), cmpSort);
+ // Remove the duplicates since it's sorted now.
+ mEntries.erase(std::unique(mEntries.begin(), mEntries.end(), cmpEqual),
+ mEntries.end());
+ }
+
+ void Clear() { mEntries.clear(); }
+
+ size_t SizeOf() const {
+ size_t size = 0;
+
+ for (const auto& item : mEntries) {
+ size += item.SizeOf();
+ }
+
+ return size;
+ }
+
+ private:
+ std::vector<SharedLibrary> mEntries;
+
+ friend struct IPC::ParamTraits<SharedLibraryInfo>;
+};
+
+namespace IPC {
+template <>
+struct ParamTraits<SharedLibrary> {
+ typedef SharedLibrary paramType;
+
+ static void Write(MessageWriter* aWriter, const paramType& aParam);
+ static bool Read(MessageReader* aReader, paramType* aResult);
+};
+
+template <>
+struct ParamTraits<SharedLibraryInfo> {
+ typedef SharedLibraryInfo paramType;
+
+ static void Write(MessageWriter* aWriter, const paramType& aParam);
+ static bool Read(MessageReader* aReader, paramType* aResult);
+};
+} // namespace IPC
+
+#endif
diff --git a/tools/profiler/rust-api/Cargo.toml b/tools/profiler/rust-api/Cargo.toml
new file mode 100644
index 0000000000..93800051e4
--- /dev/null
+++ b/tools/profiler/rust-api/Cargo.toml
@@ -0,0 +1,23 @@
+[package]
+name = "gecko-profiler"
+version = "0.1.0"
+authors = ["The Mozilla Project Developers"]
+edition = "2018"
+license = "MPL-2.0"
+
+[dependencies]
+profiler-macros = { path = "./macros" }
+lazy_static = "1"
+serde = { version = "1.0", features = ["derive"] }
+bincode = "1"
+mozbuild = "0.1"
+
+[build-dependencies]
+lazy_static = "1"
+bindgen = {version = "0.64", default-features = false}
+mozbuild = "0.1"
+
+[features]
+# This feature is being set by Gecko. If it's not set, all public functions and
+# structs will be no-op.
+enabled = []
diff --git a/tools/profiler/rust-api/README.md b/tools/profiler/rust-api/README.md
new file mode 100644
index 0000000000..60926a85c7
--- /dev/null
+++ b/tools/profiler/rust-api/README.md
@@ -0,0 +1,5 @@
+# Gecko Profiler API for Rust
+
+This crate is the collection of all the API endpoints for Gecko Profiler. Please use this crate instead of using raw FFI calls.
+
+See the module documentations for more information about the specific API endpoints.
diff --git a/tools/profiler/rust-api/build.rs b/tools/profiler/rust-api/build.rs
new file mode 100644
index 0000000000..2dd70ed55c
--- /dev/null
+++ b/tools/profiler/rust-api/build.rs
@@ -0,0 +1,118 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at https://mozilla.org/MPL/2.0/. */
+
+//! Build script for the Gecko Profiler bindings.
+//!
+//! This file is executed by cargo when this crate is built. It generates the
+//! `$OUT_DIR/bindings.rs` file which is then included by `src/gecko_bindings/mod.rs`.
+
+#[macro_use]
+extern crate lazy_static;
+
+use bindgen::{Builder, CargoCallbacks, CodegenConfig};
+use std::env;
+use std::fs;
+use std::path::PathBuf;
+
+lazy_static! {
+ static ref OUTDIR_PATH: PathBuf = PathBuf::from(env::var_os("OUT_DIR").unwrap()).join("gecko");
+}
+
+const BINDINGS_FILE: &str = "bindings.rs";
+
+lazy_static! {
+ static ref BINDGEN_FLAGS: Vec<String> = {
+ // Load build-specific config overrides.
+ let path = mozbuild::TOPOBJDIR.join("tools/profiler/rust-api/extra-bindgen-flags");
+ println!("cargo:rerun-if-changed={}", path.to_str().unwrap());
+ fs::read_to_string(path).expect("Failed to read extra-bindgen-flags file")
+ .split_whitespace()
+ .map(std::borrow::ToOwned::to_owned)
+ .collect()
+ };
+ static ref SEARCH_PATHS: Vec<PathBuf> = vec![
+ mozbuild::TOPOBJDIR.join("dist/include"),
+ mozbuild::TOPOBJDIR.join("dist/include/nspr"),
+ ];
+}
+
+fn search_include(name: &str) -> Option<PathBuf> {
+ for path in SEARCH_PATHS.iter() {
+ let file = path.join(name);
+ if file.is_file() {
+ return Some(file);
+ }
+ }
+ None
+}
+
+fn add_include(name: &str) -> String {
+ let file = match search_include(name) {
+ Some(file) => file,
+ None => panic!("Include not found: {}", name),
+ };
+ let file_path = String::from(file.to_str().unwrap());
+ println!("cargo:rerun-if-changed={}", file_path);
+ file_path
+}
+
+fn generate_bindings() {
+ let mut builder = Builder::default()
+ .enable_cxx_namespaces()
+ .with_codegen_config(CodegenConfig::TYPES | CodegenConfig::VARS | CodegenConfig::FUNCTIONS)
+ .disable_untagged_union()
+ .size_t_is_usize(true);
+
+ for dir in SEARCH_PATHS.iter() {
+ builder = builder.clang_arg("-I").clang_arg(dir.to_str().unwrap());
+ }
+
+ builder = builder
+ .clang_arg("-include")
+ .clang_arg(add_include("mozilla-config.h"));
+
+ for item in &*BINDGEN_FLAGS {
+ builder = builder.clang_arg(item);
+ }
+
+ let bindings = builder
+ .header(add_include("GeckoProfiler.h"))
+ .header(add_include("ProfilerBindings.h"))
+ .allowlist_function("gecko_profiler_.*")
+ .allowlist_var("mozilla::profiler::detail::RacyFeatures::sActiveAndFeatures")
+ .allowlist_type("mozilla::profiler::detail::RacyFeatures")
+ .rustified_enum("mozilla::StackCaptureOptions")
+ .rustified_enum("mozilla::MarkerSchema_Location")
+ .rustified_enum("mozilla::MarkerSchema_Format")
+ .rustified_enum("mozilla::MarkerSchema_Searchable")
+ // Converting std::string to an opaque type makes some platforms build
+ // successfully. Otherwise, it fails to build because MarkerSchema has
+ // some std::strings as its fields.
+ .opaque_type("std::string")
+ // std::vector needs to be converted to an opaque type because, if it's
+ // not an opaque type, bindgen can't find its size properly and
+ // MarkerSchema's total size reduces. That causes a heap buffer overflow.
+ .opaque_type("std::vector")
+ .raw_line("pub use self::root::*;")
+ // Tell cargo to invalidate the built crate whenever any of the
+ // included header files changed.
+ .parse_callbacks(Box::new(CargoCallbacks))
+ // Finish the builder and generate the bindings.
+ .generate()
+ // Unwrap the Result and panic on failure.
+ .expect("Unable to generate bindings");
+
+ let out_file = OUTDIR_PATH.join(BINDINGS_FILE);
+ bindings
+ .write_to_file(out_file)
+ .expect("Couldn't write bindings!");
+}
+
+fn main() {
+ println!("cargo:rerun-if-changed=build.rs");
+ println!("cargo:out_dir={}", env::var("OUT_DIR").unwrap());
+
+ fs::create_dir_all(&*OUTDIR_PATH).unwrap();
+ generate_bindings();
+}
diff --git a/tools/profiler/rust-api/cbindgen.toml b/tools/profiler/rust-api/cbindgen.toml
new file mode 100644
index 0000000000..3f0df0f34f
--- /dev/null
+++ b/tools/profiler/rust-api/cbindgen.toml
@@ -0,0 +1,15 @@
+header = """/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */"""
+autogen_warning = """/* DO NOT MODIFY THIS MANUALLY! This file was generated using cbindgen. See RunCbindgen.py */
+#ifndef ProfilerRustBindings_h
+#error "Don't include this file directly, instead include ProfilerRustBindings.h"
+#endif
+"""
+include_version = true
+braces = "SameLine"
+line_length = 100
+tab_width = 2
+language = "C++"
+# Put FFI calls in the `mozilla::profiler::ffi` namespace.
+namespaces = ["mozilla", "profiler", "ffi"]
diff --git a/tools/profiler/rust-api/extra-bindgen-flags.in b/tools/profiler/rust-api/extra-bindgen-flags.in
new file mode 100644
index 0000000000..b0275a031b
--- /dev/null
+++ b/tools/profiler/rust-api/extra-bindgen-flags.in
@@ -0,0 +1 @@
+@BINDGEN_SYSTEM_FLAGS@ @NSPR_CFLAGS@
diff --git a/tools/profiler/rust-api/macros/Cargo.toml b/tools/profiler/rust-api/macros/Cargo.toml
new file mode 100644
index 0000000000..b8bd9910dc
--- /dev/null
+++ b/tools/profiler/rust-api/macros/Cargo.toml
@@ -0,0 +1,13 @@
+[package]
+name = "profiler-macros"
+version = "0.1.0"
+authors = ["The Mozilla Project Developers"]
+edition = "2018"
+license = "MPL-2.0"
+
+[lib]
+proc-macro = true
+
+[dependencies]
+syn = "1"
+quote = "1.0"
diff --git a/tools/profiler/rust-api/macros/src/lib.rs b/tools/profiler/rust-api/macros/src/lib.rs
new file mode 100644
index 0000000000..48617b758e
--- /dev/null
+++ b/tools/profiler/rust-api/macros/src/lib.rs
@@ -0,0 +1,65 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this file,
+ * You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#![deny(warnings)]
+
+//! A procedural macro as a syntactical sugar to `gecko_profiler_label!` macro.
+//! You can use this macro on top of functions to automatically append the
+//! label frame to the function.
+//!
+//! Example usage:
+//! ```rust
+//! #[gecko_profiler_fn_label(DOM)]
+//! fn foo(bar: u32) -> u32 {
+//! bar
+//! }
+//!
+//! #[gecko_profiler_fn_label(Javascript, IonMonkey)]
+//! pub fn bar(baz: i8) -> i8 {
+//! baz
+//! }
+//! ```
+//!
+//! See the documentation of `gecko_profiler_label!` macro to learn more about
+//! its parameters.
+
+extern crate proc_macro;
+
+use proc_macro::TokenStream;
+use quote::quote;
+use syn::{parse_macro_input, AttributeArgs, ItemFn};
+
+#[proc_macro_attribute]
+pub fn gecko_profiler_fn_label(attrs: TokenStream, input: TokenStream) -> TokenStream {
+ let attr_args = parse_macro_input!(attrs as AttributeArgs);
+ let input = parse_macro_input!(input as ItemFn);
+
+ if attr_args.is_empty() || attr_args.len() > 2 {
+ panic!("Expected one or two arguments as ProfilingCategory or ProfilingCategoryPair but {} arguments provided!", attr_args.len());
+ }
+
+ let category_name = &attr_args[0];
+ // Try to get the subcategory if possible. Otherwise, use `None`.
+ let subcategory_if_provided = match attr_args.get(1) {
+ Some(subcategory) => quote!(, #subcategory),
+ None => quote!(),
+ };
+
+ let ItemFn {
+ attrs,
+ vis,
+ sig,
+ block,
+ } = input;
+ let stmts = &block.stmts;
+
+ let new_fn = quote! {
+ #(#attrs)* #vis #sig {
+ gecko_profiler_label!(#category_name#subcategory_if_provided);
+ #(#stmts)*
+ }
+ };
+
+ new_fn.into()
+}
diff --git a/tools/profiler/rust-api/src/gecko_bindings/glue.rs b/tools/profiler/rust-api/src/gecko_bindings/glue.rs
new file mode 100644
index 0000000000..531f727a00
--- /dev/null
+++ b/tools/profiler/rust-api/src/gecko_bindings/glue.rs
@@ -0,0 +1,53 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at https://mozilla.org/MPL/2.0/. */
+
+use crate::gecko_bindings::{bindings, structs::mozilla};
+use crate::json_writer::JSONWriter;
+use crate::marker::deserializer_tags_state::{
+ get_marker_type_functions_read_guard, MarkerTypeFunctions,
+};
+use std::ops::DerefMut;
+use std::os::raw::{c_char, c_void};
+
+#[no_mangle]
+pub unsafe extern "C" fn gecko_profiler_serialize_marker_for_tag(
+ deserializer_tag: u8,
+ payload: *const u8,
+ payload_size: usize,
+ json_writer: &mut mozilla::baseprofiler::SpliceableJSONWriter,
+) {
+ let marker_type_functions = get_marker_type_functions_read_guard();
+ let &MarkerTypeFunctions {
+ transmute_and_stream_fn,
+ marker_type_name_fn,
+ ..
+ } = marker_type_functions.get(deserializer_tag);
+ let mut json_writer = JSONWriter::new(&mut *json_writer);
+
+ // Serialize the marker type name first.
+ json_writer.string_property("type", marker_type_name_fn());
+ // Serialize the marker payload now.
+ transmute_and_stream_fn(payload, payload_size, &mut json_writer);
+}
+
+#[no_mangle]
+pub unsafe extern "C" fn gecko_profiler_stream_marker_schemas(
+ json_writer: &mut mozilla::baseprofiler::SpliceableJSONWriter,
+ streamed_names_set: *mut c_void,
+) {
+ let marker_type_functions = get_marker_type_functions_read_guard();
+
+ for funcs in marker_type_functions.iter() {
+ let marker_name = (funcs.marker_type_name_fn)();
+ let mut marker_schema = (funcs.marker_type_display_fn)();
+
+ bindings::gecko_profiler_marker_schema_stream(
+ json_writer,
+ marker_name.as_ptr() as *const c_char,
+ marker_name.len(),
+ marker_schema.pin.deref_mut().as_mut_ptr(),
+ streamed_names_set,
+ )
+ }
+}
diff --git a/tools/profiler/rust-api/src/gecko_bindings/mod.rs b/tools/profiler/rust-api/src/gecko_bindings/mod.rs
new file mode 100644
index 0000000000..f1ec667bb2
--- /dev/null
+++ b/tools/profiler/rust-api/src/gecko_bindings/mod.rs
@@ -0,0 +1,21 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at https://mozilla.org/MPL/2.0/. */
+
+//! Gecko's C++ bindings for the profiler.
+
+#[allow(
+ dead_code,
+ non_camel_case_types,
+ non_snake_case,
+ non_upper_case_globals,
+ missing_docs
+)]
+pub mod structs {
+ include!(concat!(env!("OUT_DIR"), "/gecko/bindings.rs"));
+}
+
+pub use self::structs as bindings;
+
+mod glue;
+pub mod profiling_categories;
diff --git a/tools/profiler/rust-api/src/gecko_bindings/profiling_categories.rs b/tools/profiler/rust-api/src/gecko_bindings/profiling_categories.rs
new file mode 100644
index 0000000000..0f24aa9c35
--- /dev/null
+++ b/tools/profiler/rust-api/src/gecko_bindings/profiling_categories.rs
@@ -0,0 +1,32 @@
+// This Source Code Form is subject to the terms of the Mozilla Public
+// License, v. 2.0. If a copy of the MPL was not distributed with this
+// file, You can obtain one at https://mozilla.org/MPL/2.0/.
+
+//! This file contains the generated ProfilingCategory and ProfilingCategoryPair enums.
+//!
+//! The contents of this module are generated by
+//! `mozglue/baseprofiler/generate_profiling_categories.py`, from
+//! 'mozglue/baseprofiler/core/profiling_categories.yaml`.
+
+include!(mozbuild::objdir_path!(
+ "tools/profiler/rust-api/src/gecko_bindings/profiling_categories.rs"
+));
+
+/// Helper macro that returns the profiling category pair from either only
+/// "category", or "category + sub category" pair. Refer to `profiling_categories.yaml`
+/// or generated `profiling_categories.rs` to see all the marker categories.
+/// This is useful to make the APIs similar to each other since
+/// `gecko_profiler_label!` API also requires the same syntax.
+///
+/// Example usages:
+/// - `gecko_profiler_category!(DOM)`
+/// - `gecko_profiler_category!(JavaScript, Parsing)`
+#[macro_export]
+macro_rules! gecko_profiler_category {
+ ($category:ident) => {
+ $crate::ProfilingCategoryPair::$category(None)
+ };
+ ($category:ident, $subcategory:ident) => {
+ $crate::ProfilingCategoryPair::$category(Some($crate::$category::$subcategory))
+ };
+}
diff --git a/tools/profiler/rust-api/src/json_writer.rs b/tools/profiler/rust-api/src/json_writer.rs
new file mode 100644
index 0000000000..8ab6f2ed99
--- /dev/null
+++ b/tools/profiler/rust-api/src/json_writer.rs
@@ -0,0 +1,86 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this file,
+ * You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+//! Gecko JSON writer support for marker API.
+
+use crate::gecko_bindings::{bindings, structs::mozilla};
+use std::os::raw::c_char;
+
+/// Wrapper for the C++ SpliceableJSONWriter object. It exposes some methods to
+/// add various properties to the JSON.
+#[derive(Debug)]
+pub struct JSONWriter<'a>(&'a mut mozilla::baseprofiler::SpliceableJSONWriter);
+
+impl<'a> JSONWriter<'a> {
+ /// Constructor for the JSONWriter object. It takes a C++ SpliceableJSONWriter
+ /// reference as its argument and stores it for later accesses.
+ pub(crate) fn new(json_writer: &'a mut mozilla::baseprofiler::SpliceableJSONWriter) -> Self {
+ JSONWriter(json_writer)
+ }
+
+ /// Adds an int property to the JSON.
+ /// Prints: "<name>": <value>
+ pub fn int_property(&mut self, name: &str, value: i64) {
+ unsafe {
+ bindings::gecko_profiler_json_writer_int_property(
+ self.0,
+ name.as_ptr() as *const c_char,
+ name.len(),
+ value,
+ );
+ }
+ }
+
+ /// Adds a float property to the JSON.
+ /// Prints: "<name>": <value>
+ pub fn float_property(&mut self, name: &str, value: f64) {
+ unsafe {
+ bindings::gecko_profiler_json_writer_float_property(
+ self.0,
+ name.as_ptr() as *const c_char,
+ name.len(),
+ value,
+ );
+ }
+ }
+
+ /// Adds an bool property to the JSON.
+ /// Prints: "<name>": <value>
+ pub fn bool_property(&mut self, name: &str, value: bool) {
+ unsafe {
+ bindings::gecko_profiler_json_writer_bool_property(
+ self.0,
+ name.as_ptr() as *const c_char,
+ name.len(),
+ value,
+ );
+ }
+ }
+
+ /// Adds a string property to the JSON.
+ /// Prints: "<name>": "<value>"
+ pub fn string_property(&mut self, name: &str, value: &str) {
+ unsafe {
+ bindings::gecko_profiler_json_writer_string_property(
+ self.0,
+ name.as_ptr() as *const c_char,
+ name.len(),
+ value.as_ptr() as *const c_char,
+ value.len(),
+ );
+ }
+ }
+
+ /// Adds a null property to the JSON.
+ /// Prints: "<name>": null
+ pub fn null_property(&mut self, name: &str) {
+ unsafe {
+ bindings::gecko_profiler_json_writer_null_property(
+ self.0,
+ name.as_ptr() as *const c_char,
+ name.len(),
+ );
+ }
+ }
+}
diff --git a/tools/profiler/rust-api/src/label.rs b/tools/profiler/rust-api/src/label.rs
new file mode 100644
index 0000000000..10970c90ad
--- /dev/null
+++ b/tools/profiler/rust-api/src/label.rs
@@ -0,0 +1,137 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this file,
+ * You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+//! Gecko profiler label support.
+//!
+//! Use the `profiler_label!` macro directly instead of using `AutoProfilerLabel`.
+//! See the `profiler_label!` macro documentation on how to use it.
+
+#[cfg(feature = "enabled")]
+use crate::gecko_bindings::{
+ bindings, profiling_categories::ProfilingCategoryPair, structs::mozilla,
+};
+
+/// RAII object that constructs and destroys a C++ AutoProfilerLabel object
+/// pointed to be the specified reference.
+/// Use `profiler_label!` macro directly instead of this, if possible.
+#[cfg(feature = "enabled")]
+pub struct AutoProfilerLabel<'a>(&'a mut mozilla::AutoProfilerLabel);
+
+#[cfg(feature = "enabled")]
+impl<'a> AutoProfilerLabel<'a> {
+ /// Creates a new AutoProfilerLabel with the specified label type.
+ ///
+ /// unsafe since the caller must ensure that `label` is allocated on the
+ /// stack.
+ #[inline]
+ pub unsafe fn new(
+ label: &mut std::mem::MaybeUninit<mozilla::AutoProfilerLabel>,
+ category_pair: ProfilingCategoryPair,
+ ) -> AutoProfilerLabel {
+ bindings::gecko_profiler_construct_label(
+ label.as_mut_ptr(),
+ category_pair.to_cpp_enum_value(),
+ );
+ AutoProfilerLabel(&mut *label.as_mut_ptr())
+ }
+}
+
+#[cfg(feature = "enabled")]
+impl<'a> Drop for AutoProfilerLabel<'a> {
+ #[inline]
+ fn drop(&mut self) {
+ unsafe {
+ bindings::gecko_profiler_destruct_label(self.0);
+ }
+ }
+}
+
+/// Place a Gecko profiler label on the stack.
+///
+/// The first `category` argument must be the name of a variant of `ProfilerLabelCategoryPair`
+/// and the second optional `subcategory` argument must be one of the sub variants of
+/// `ProfilerLabelCategoryPair`. All options can be seen either in the
+/// profiling_categories.yaml file or generated profiling_categories.rs file.
+///
+/// Example usage:
+/// ```rust
+/// gecko_profiler_label!(Layout);
+/// gecko_profiler_label!(JavaScript, Parsing);
+/// ```
+/// You can wrap this macro with a block to only label a specific part of a function.
+#[cfg(feature = "enabled")]
+#[macro_export]
+macro_rules! gecko_profiler_label {
+ ($category:ident) => {
+ gecko_profiler_label!($crate::ProfilingCategoryPair::$category(None))
+ };
+ ($category:ident, $subcategory:ident) => {
+ gecko_profiler_label!($crate::ProfilingCategoryPair::$category(Some(
+ $crate::$category::$subcategory
+ )))
+ };
+
+ ($category_path:expr) => {
+ let mut _profiler_label = ::std::mem::MaybeUninit::<
+ $crate::gecko_bindings::structs::mozilla::AutoProfilerLabel,
+ >::uninit();
+ let _profiler_label = if $crate::is_active() {
+ unsafe {
+ Some($crate::AutoProfilerLabel::new(
+ &mut _profiler_label,
+ $category_path,
+ ))
+ }
+ } else {
+ None
+ };
+ };
+}
+
+/// No-op when MOZ_GECKO_PROFILER is not defined.
+#[cfg(not(feature = "enabled"))]
+#[macro_export]
+macro_rules! gecko_profiler_label {
+ ($category:ident) => {};
+ ($category:ident, $subcategory:ident) => {};
+}
+
+#[cfg(test)]
+mod tests {
+ use profiler_macros::gecko_profiler_fn_label;
+
+ #[test]
+ fn test_gecko_profiler_label() {
+ gecko_profiler_label!(Layout);
+ gecko_profiler_label!(JavaScript, Parsing);
+ }
+
+ #[gecko_profiler_fn_label(DOM)]
+ fn foo(bar: u32) -> u32 {
+ bar
+ }
+
+ #[gecko_profiler_fn_label(Javascript, IonMonkey)]
+ pub(self) fn bar(baz: i8) -> i8 {
+ baz
+ }
+
+ struct A;
+
+ impl A {
+ #[gecko_profiler_fn_label(Idle)]
+ pub fn test(&self) -> i8 {
+ 1
+ }
+ }
+
+ #[test]
+ fn test_gecko_profiler_fn_label() {
+ let _: u32 = foo(100000);
+ let _: i8 = bar(127);
+
+ let a = A;
+ let _ = a.test(100);
+ }
+}
diff --git a/tools/profiler/rust-api/src/lib.rs b/tools/profiler/rust-api/src/lib.rs
new file mode 100644
index 0000000000..3c857ae8ac
--- /dev/null
+++ b/tools/profiler/rust-api/src/lib.rs
@@ -0,0 +1,29 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+///! Profiler Rust API
+
+#[macro_use]
+extern crate lazy_static;
+
+pub mod gecko_bindings;
+mod json_writer;
+mod label;
+mod marker;
+mod profiler_state;
+mod thread;
+mod time;
+
+pub use gecko_bindings::profiling_categories::*;
+pub use json_writer::*;
+pub use label::*;
+pub use marker::options::*;
+pub use marker::schema::MarkerSchema;
+pub use marker::*;
+pub use profiler_macros::gecko_profiler_fn_label;
+pub use profiler_state::*;
+pub use thread::*;
+pub use time::*;
+
+pub use serde::{Deserialize, Serialize};
diff --git a/tools/profiler/rust-api/src/marker/deserializer_tags_state.rs b/tools/profiler/rust-api/src/marker/deserializer_tags_state.rs
new file mode 100644
index 0000000000..890cc3f263
--- /dev/null
+++ b/tools/profiler/rust-api/src/marker/deserializer_tags_state.rs
@@ -0,0 +1,116 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this file,
+ * You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+use crate::json_writer::JSONWriter;
+use crate::marker::schema::MarkerSchema;
+use crate::marker::{transmute_and_stream, ProfilerMarker};
+use std::collections::HashMap;
+use std::sync::{RwLock, RwLockReadGuard};
+
+lazy_static! {
+ static ref DESERIALIZER_TAGS_STATE: RwLock<DeserializerTagsState> =
+ RwLock::new(DeserializerTagsState::new());
+}
+
+/// A state that keeps track of each marker types and their deserializer tags.
+/// They are added during the marker insertion and read during the marker serialization.
+pub struct DeserializerTagsState {
+ /// C++ side accepts only u8 values, but we only know usize values as the
+ /// unique marker type values. So, we need to keep track of each
+ /// "marker tag -> deserializer tag" conversions to directly get the
+ /// deserializer tags of the already added marker types.
+ pub marker_tag_to_deserializer_tag: HashMap<usize, u8>,
+ /// Vector of marker type functions.
+ /// 1-based, i.e.: [0] -> tag 1. Elements are pushed to the end of the vector
+ /// whenever a new marker type is used in a Firefox session; the content is
+ /// kept between profiler runs in that session. On the C++ side, we have the
+ /// same algorithm (althought it's a sized array). See `sMarkerTypeFunctions1Based`.
+ pub marker_type_functions_1_based: Vec<MarkerTypeFunctions>,
+}
+
+/// Functions that will be stored per marker type, so we can serialize the marker
+/// schema and stream the marker payload for a specific type.
+pub struct MarkerTypeFunctions {
+ /// A function that returns the name of the marker type.
+ pub marker_type_name_fn: fn() -> &'static str,
+ /// A function that returns a `MarkerSchema`, which contains all the
+ /// information needed to stream the display schema associated with a
+ /// marker type.
+ pub marker_type_display_fn: fn() -> MarkerSchema,
+ /// A function that can read a serialized payload from bytes and streams it
+ /// as JSON object properties.
+ pub transmute_and_stream_fn:
+ unsafe fn(payload: *const u8, payload_size: usize, json_writer: &mut JSONWriter),
+}
+
+impl DeserializerTagsState {
+ fn new() -> Self {
+ DeserializerTagsState {
+ marker_tag_to_deserializer_tag: HashMap::new(),
+ marker_type_functions_1_based: vec![],
+ }
+ }
+}
+
+/// Get or insert the deserializer tag for each marker type. The tag storage
+/// is limited to 255 marker types. This is the same with the C++ side. It's
+/// unlikely to reach to this limit, but if that's the case, C++ side needs
+/// to change the uint8_t type for the deserializer tag as well.
+pub fn get_or_insert_deserializer_tag<T>() -> u8
+where
+ T: ProfilerMarker,
+{
+ let unique_marker_tag = &T::marker_type_name as *const _ as usize;
+ let mut state = DESERIALIZER_TAGS_STATE.write().unwrap();
+
+ match state.marker_tag_to_deserializer_tag.get(&unique_marker_tag) {
+ None => {
+ // It's impossible to have length more than u8.
+ let deserializer_tag = state.marker_type_functions_1_based.len() as u8 + 1;
+ debug_assert!(
+ deserializer_tag < 250,
+ "Too many rust marker payload types! Please consider increasing the profiler \
+ buffer tag size."
+ );
+
+ state
+ .marker_tag_to_deserializer_tag
+ .insert(unique_marker_tag, deserializer_tag);
+ state
+ .marker_type_functions_1_based
+ .push(MarkerTypeFunctions {
+ marker_type_name_fn: T::marker_type_name,
+ marker_type_display_fn: T::marker_type_display,
+ transmute_and_stream_fn: transmute_and_stream::<T>,
+ });
+ deserializer_tag
+ }
+ Some(deserializer_tag) => *deserializer_tag,
+ }
+}
+
+/// A guard that will be used by the marker FFI functions for getting marker type functions.
+pub struct MarkerTypeFunctionsReadGuard {
+ guard: RwLockReadGuard<'static, DeserializerTagsState>,
+}
+
+impl MarkerTypeFunctionsReadGuard {
+ pub fn iter<'a>(&'a self) -> impl Iterator<Item = &'a MarkerTypeFunctions> {
+ self.guard.marker_type_functions_1_based.iter()
+ }
+
+ pub fn get<'a>(&'a self, deserializer_tag: u8) -> &'a MarkerTypeFunctions {
+ self.guard
+ .marker_type_functions_1_based
+ .get(deserializer_tag as usize - 1)
+ .expect("Failed to find the marker type functions for given deserializer tag")
+ }
+}
+
+/// Locks the DESERIALIZER_TAGS_STATE and returns the marker type functions read guard.
+pub fn get_marker_type_functions_read_guard() -> MarkerTypeFunctionsReadGuard {
+ MarkerTypeFunctionsReadGuard {
+ guard: DESERIALIZER_TAGS_STATE.read().unwrap(),
+ }
+}
diff --git a/tools/profiler/rust-api/src/marker/mod.rs b/tools/profiler/rust-api/src/marker/mod.rs
new file mode 100644
index 0000000000..984a475089
--- /dev/null
+++ b/tools/profiler/rust-api/src/marker/mod.rs
@@ -0,0 +1,284 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this file,
+ * You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+//! ## Gecko profiler marker support
+//!
+//! This marker API has a few different functions that you can use to mark a part of your code.
+//! There are three main marker functions to use from Rust: [`add_untyped_marker`],
+//! [`add_text_marker`] and [`add_marker`]. They are similar to what we have on
+//! the C++ side. Please take a look at the marker documentation in the Firefox
+//! source docs to learn more about them:
+//! https://firefox-source-docs.mozilla.org/tools/profiler/markers-guide.html
+//!
+//! ### Simple marker without any additional data
+//!
+//! The simplest way to add a marker without any additional information is the
+//! [`add_untyped_marker`] API. You can use it to mark a part of the code with
+//! only a name. E.g.:
+//!
+//! ```
+//! gecko_profiler::add_untyped_marker(
+//! // Name of the marker as a string.
+//! "Marker Name",
+//! // Category with an optional sub-category.
+//! gecko_profiler_category!(Graphics, DisplayListBuilding),
+//! // MarkerOptions that keeps options like marker timing and marker stack.
+//! Default::default(),
+//! );
+//! ```
+//!
+//! Please see the [`gecko_profiler_category!`], [`MarkerOptions`],[`MarkerTiming`]
+//! and [`MarkerStack`] to learn more about these.
+//!
+//! You can also give explicit [`MarkerOptions`] value like these:
+//!
+//! ```
+//! // With both timing and stack fields:
+//! MarkerOptions { timing: MarkerTiming::instant_now(), stack: MarkerStack::Full }
+//! // Or with some fields as default:
+//! MarkerOptions { timing: MarkerTiming::instant_now(), ..Default::default() }
+//! ```
+//!
+//! ### Marker with only an additional text for more information:
+//!
+//! The next and slightly more advanced API is [`add_text_marker`].
+//! This is used to add a marker name + a string value for extra information.
+//! E.g.:
+//!
+//! ```
+//! let info = "info about this marker";
+//! ...
+//! gecko_profiler::add_text_marker(
+//! // Name of the marker as a string.
+//! "Marker Name",
+//! // Category with an optional sub-category.
+//! gecko_profiler_category!(DOM),
+//! // MarkerOptions that keeps options like marker timing and marker stack.
+//! MarkerOptions {
+//! timing: MarkerTiming::instant_now(),
+//! ..Default::default()
+//! },
+//! // Additional information as a string.
+//! info,
+//! );
+//! ```
+//!
+//! ### Marker with a more complex payload and different visualization in the profiler front-end.
+//!
+//! [`add_marker`] is the most advanced API that you can use to add different types
+//! of values as data to your marker and customize the visualization of that marker
+//! in the profiler front-end (profiler.firefox.com).
+//!
+//! To be able to add a a marker, first you need to create your marker payload
+//! struct in your codebase and implement the [`ProfilerMarker`] trait like this:
+//!
+//! ```
+//! #[derive(Serialize, Deserialize, Debug)]
+//! pub struct TestMarker {
+//! a: u32,
+//! b: String,
+//! }
+//!
+//! // Please see the documentation of [`ProfilerMarker`].
+//! impl gecko_profiler::ProfilerMarker for TestMarker {
+//! fn marker_type_name() -> &'static str {
+//! "marker type from rust"
+//! }
+//! fn marker_type_display() -> gecko_profiler::MarkerSchema {
+//! use gecko_profiler::marker::schema::*;
+//! let mut schema = MarkerSchema::new(&[Location::MarkerChart]);
+//! schema.set_chart_label("Name: {marker.name}");
+//! schema.set_tooltip_label("{marker.data.a}");
+//! schema.add_key_label_format("a", "A Value", Format::Integer);
+//! schema.add_key_label_format("b", "B Value", Format::String);
+//! schema
+//! }
+//! fn stream_json_marker_data(&self, json_writer: &mut gecko_profiler::JSONWriter) {
+//! json_writer.int_property("a", self.a.into());
+//! json_writer.string_property("b", &self.b);
+//! }
+//! }
+//! ```
+//!
+//! Once you've created this payload and implemented the [`ProfilerMarker`], you
+//! can now add this marker in the code that you would like to measure. E.g.:
+//!
+//! ```
+//! gecko_profiler::add_marker(
+//! // Name of the marker as a string.
+//! "Marker Name",
+//! // Category with an optional sub-category.
+//! gecko_profiler_category!(Graphics, DisplayListBuilding),
+//! // MarkerOptions that keeps options like marker timing and marker stack.
+//! Default::default(),
+//! // Marker payload.
+//! TestMarker {a: 12, b: "hello".to_owned()},
+//! );
+//! ```
+
+pub(crate) mod deserializer_tags_state;
+pub mod options;
+pub mod schema;
+
+pub use options::*;
+pub use schema::MarkerSchema;
+
+use crate::gecko_bindings::{bindings, profiling_categories::ProfilingCategoryPair};
+use crate::json_writer::JSONWriter;
+use crate::marker::deserializer_tags_state::get_or_insert_deserializer_tag;
+use crate::marker::options::MarkerOptions;
+use serde::{de::DeserializeOwned, Deserialize, Serialize};
+use std::os::raw::c_char;
+
+/// Marker API to add a new simple marker without any payload.
+/// Please see the module documentation on how to add a marker with this API.
+pub fn add_untyped_marker(name: &str, category: ProfilingCategoryPair, mut options: MarkerOptions) {
+ if !crate::profiler_state::can_accept_markers() {
+ // Nothing to do.
+ return;
+ }
+
+ unsafe {
+ bindings::gecko_profiler_add_marker_untyped(
+ name.as_ptr() as *const c_char,
+ name.len(),
+ category.to_cpp_enum_value(),
+ options.timing.0.as_mut_ptr(),
+ options.stack,
+ )
+ }
+}
+
+/// Marker API to add a new marker with additional text for details.
+/// Please see the module documentation on how to add a marker with this API.
+pub fn add_text_marker(
+ name: &str,
+ category: ProfilingCategoryPair,
+ mut options: MarkerOptions,
+ text: &str,
+) {
+ if !crate::profiler_state::can_accept_markers() {
+ // Nothing to do.
+ return;
+ }
+
+ unsafe {
+ bindings::gecko_profiler_add_marker_text(
+ name.as_ptr() as *const c_char,
+ name.len(),
+ category.to_cpp_enum_value(),
+ options.timing.0.as_mut_ptr(),
+ options.stack,
+ text.as_ptr() as *const c_char,
+ text.len(),
+ )
+ }
+}
+
+/// Trait that every profiler marker payload struct needs to implement.
+/// This will tell the profiler back-end how to serialize it as json and
+/// the front-end how to display the marker.
+/// Please also see the documentation here:
+/// https://firefox-source-docs.mozilla.org/tools/profiler/markers-guide.html#how-to-define-new-marker-types
+///
+/// - `marker_type_name`: Returns a static string as the marker type name. This
+/// should be unique and it is used to keep track of the type of markers in the
+/// profiler storage, and to identify them uniquely on the profiler front-end.
+/// - `marker_type_display`: Where and how to display the marker and its data.
+/// Returns a `MarkerSchema` object which will be forwarded to the profiler
+/// front-end.
+/// - `stream_json_marker_data`: Data specific to this marker type should be
+/// serialized to JSON for the profiler front-end. All the common marker data
+/// like marker name, category, timing will be serialized automatically. But
+/// marker specific data should be serialized here.
+pub trait ProfilerMarker: Serialize + DeserializeOwned {
+ /// A static method that returns the name of the marker type.
+ fn marker_type_name() -> &'static str;
+ /// A static method that returns a `MarkerSchema`, which contains all the
+ /// information needed to stream the display schema associated with a
+ /// marker type.
+ fn marker_type_display() -> schema::MarkerSchema;
+ /// A method that streams the marker payload data as JSON object properties.
+ /// Please see the [JSONWriter] struct to see its methods.
+ fn stream_json_marker_data(&self, json_writer: &mut JSONWriter);
+}
+
+/// A function that deserializes the marker payload and streams it to the JSON.
+unsafe fn transmute_and_stream<T>(
+ payload: *const u8,
+ payload_size: usize,
+ json_writer: &mut JSONWriter,
+) where
+ T: ProfilerMarker,
+{
+ let payload_slice = std::slice::from_raw_parts(payload, payload_size);
+ let payload: T = bincode::deserialize(&payload_slice).unwrap();
+ payload.stream_json_marker_data(json_writer);
+}
+
+/// Main marker API to add a new marker to profiler buffer.
+/// Please see the module documentation on how to add a marker with this API.
+pub fn add_marker<T>(
+ name: &str,
+ category: ProfilingCategoryPair,
+ mut options: MarkerOptions,
+ payload: T,
+) where
+ T: ProfilerMarker,
+{
+ if !crate::profiler_state::can_accept_markers() {
+ // Nothing to do.
+ return;
+ }
+
+ let encoded_payload: Vec<u8> = bincode::serialize(&payload).unwrap();
+ let payload_size = encoded_payload.len();
+ let maker_tag = get_or_insert_deserializer_tag::<T>();
+
+ unsafe {
+ bindings::gecko_profiler_add_marker(
+ name.as_ptr() as *const c_char,
+ name.len(),
+ category.to_cpp_enum_value(),
+ options.timing.0.as_mut_ptr(),
+ options.stack,
+ maker_tag,
+ encoded_payload.as_ptr(),
+ payload_size,
+ )
+ }
+}
+
+/// Tracing marker type for Rust code.
+/// This must be kept in sync with the `mozilla::baseprofiler::markers::Tracing`
+/// C++ counterpart.
+#[derive(Serialize, Deserialize, Debug)]
+pub struct Tracing(pub String);
+
+impl ProfilerMarker for Tracing {
+ fn marker_type_name() -> &'static str {
+ "tracing"
+ }
+
+ fn stream_json_marker_data(&self, json_writer: &mut JSONWriter) {
+ if self.0.len() != 0 {
+ json_writer.string_property("category", &self.0);
+ }
+ }
+
+ // Tracing marker is a bit special because we have the same schema in the
+ // C++ side. This function will only get called when no Tracing markers are
+ // generated from the C++ side. But, most of the time, this will not be called
+ // when there is another C++ Tracing marker.
+ fn marker_type_display() -> schema::MarkerSchema {
+ use crate::marker::schema::*;
+ let mut schema = MarkerSchema::new(&[
+ Location::MarkerChart,
+ Location::MarkerTable,
+ Location::TimelineOverview,
+ ]);
+ schema.add_key_label_format("category", "Type", Format::String);
+ schema
+ }
+}
diff --git a/tools/profiler/rust-api/src/marker/options.rs b/tools/profiler/rust-api/src/marker/options.rs
new file mode 100644
index 0000000000..a5d4e11094
--- /dev/null
+++ b/tools/profiler/rust-api/src/marker/options.rs
@@ -0,0 +1,138 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this file,
+ * You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+//! Different options for the marker API.
+//! See [`MarkerOptions`] and its fields.
+
+use crate::gecko_bindings::{bindings, structs::mozilla};
+use crate::ProfilerTime;
+use std::mem::MaybeUninit;
+
+/// Marker option that contains marker timing information.
+/// This class encapsulates the logic for correctly storing a marker based on its
+/// constructor types. Use the static methods to create the MarkerTiming. This is
+/// a transient object that is being used to enforce the constraints of the
+/// combinations of the data.
+///
+/// Implementation details: This is a RAII object that constructs and destroys a
+/// C++ MarkerTiming object pointed to a specified reference. It allocates the
+/// marker timing on stack and it's safe to move around because it's a
+/// trivially-copyable object that only contains a few numbers.
+#[derive(Debug)]
+pub struct MarkerTiming(pub(crate) MaybeUninit<mozilla::MarkerTiming>);
+
+impl MarkerTiming {
+ /// Instant marker timing at a specific time.
+ pub fn instant_at(time: ProfilerTime) -> MarkerTiming {
+ let mut marker_timing = MaybeUninit::<mozilla::MarkerTiming>::uninit();
+ unsafe {
+ bindings::gecko_profiler_construct_marker_timing_instant_at(
+ marker_timing.as_mut_ptr(),
+ &time.0,
+ );
+ }
+ MarkerTiming(marker_timing)
+ }
+
+ /// Instant marker timing at this time.
+ pub fn instant_now() -> MarkerTiming {
+ let mut marker_timing = MaybeUninit::<mozilla::MarkerTiming>::uninit();
+ unsafe {
+ bindings::gecko_profiler_construct_marker_timing_instant_now(
+ marker_timing.as_mut_ptr(),
+ );
+ }
+ MarkerTiming(marker_timing)
+ }
+
+ /// Interval marker timing with start and end times.
+ pub fn interval(start_time: ProfilerTime, end_time: ProfilerTime) -> MarkerTiming {
+ let mut marker_timing = MaybeUninit::<mozilla::MarkerTiming>::uninit();
+ unsafe {
+ bindings::gecko_profiler_construct_marker_timing_interval(
+ marker_timing.as_mut_ptr(),
+ &start_time.0,
+ &end_time.0,
+ );
+ }
+ MarkerTiming(marker_timing)
+ }
+
+ /// Interval marker with a start time and end time as "now".
+ pub fn interval_until_now_from(start_time: ProfilerTime) -> MarkerTiming {
+ let mut marker_timing = MaybeUninit::<mozilla::MarkerTiming>::uninit();
+ unsafe {
+ bindings::gecko_profiler_construct_marker_timing_interval_until_now_from(
+ marker_timing.as_mut_ptr(),
+ &start_time.0,
+ );
+ }
+ MarkerTiming(marker_timing)
+ }
+
+ /// Interval start marker with only start time. This is a partial marker and
+ /// it requires another marker with `instant_end` to be complete.
+ pub fn interval_start(time: ProfilerTime) -> MarkerTiming {
+ let mut marker_timing = MaybeUninit::<mozilla::MarkerTiming>::uninit();
+ unsafe {
+ bindings::gecko_profiler_construct_marker_timing_interval_start(
+ marker_timing.as_mut_ptr(),
+ &time.0,
+ );
+ }
+ MarkerTiming(marker_timing)
+ }
+
+ /// Interval end marker with only end time. This is a partial marker and
+ /// it requires another marker with `interval_start` to be complete.
+ pub fn interval_end(time: ProfilerTime) -> MarkerTiming {
+ let mut marker_timing = MaybeUninit::<mozilla::MarkerTiming>::uninit();
+ unsafe {
+ bindings::gecko_profiler_construct_marker_timing_interval_end(
+ marker_timing.as_mut_ptr(),
+ &time.0,
+ );
+ }
+ MarkerTiming(marker_timing)
+ }
+}
+
+impl Default for MarkerTiming {
+ fn default() -> Self {
+ MarkerTiming::instant_now()
+ }
+}
+
+impl Drop for MarkerTiming {
+ fn drop(&mut self) {
+ unsafe {
+ bindings::gecko_profiler_destruct_marker_timing(self.0.as_mut_ptr());
+ }
+ }
+}
+
+/// Marker option that contains marker stack information.
+pub type MarkerStack = mozilla::StackCaptureOptions;
+
+impl Default for MarkerStack {
+ fn default() -> Self {
+ MarkerStack::NoStack
+ }
+}
+
+/// This class combines each of the possible marker options above.
+/// Use Default::default() for the options that you don't want to provide or the
+/// options you want to leave as default. Example usage:
+///
+/// ```rust
+/// MarkerOptions {
+/// timing: MarkerTiming::instant_now(),
+/// ..Default::default()
+/// }
+/// ```
+#[derive(Debug, Default)]
+pub struct MarkerOptions {
+ pub timing: MarkerTiming,
+ pub stack: MarkerStack,
+}
diff --git a/tools/profiler/rust-api/src/marker/schema.rs b/tools/profiler/rust-api/src/marker/schema.rs
new file mode 100644
index 0000000000..9368582f11
--- /dev/null
+++ b/tools/profiler/rust-api/src/marker/schema.rs
@@ -0,0 +1,233 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this file,
+ * You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+//! [`MarkerSchema`] and other enums that will be used by `MarkerSchema`.
+
+use crate::gecko_bindings::{bindings, structs::mozilla};
+use std::mem::MaybeUninit;
+use std::ops::DerefMut;
+use std::os::raw::c_char;
+use std::pin::Pin;
+
+/// Marker locations to be displayed in the profiler front-end.
+pub type Location = mozilla::MarkerSchema_Location;
+
+/// Formats of marker properties for profiler front-end.
+pub type Format = mozilla::MarkerSchema_Format;
+
+/// Whether it's searchable or not in the profiler front-end.
+pub type Searchable = mozilla::MarkerSchema_Searchable;
+
+/// This object collects all the information necessary to stream the JSON schema
+/// that informs the front-end how to display a type of markers.
+/// It will be created and populated in `marker_type_display()` functions in each
+/// marker type definition, see add/set functions.
+///
+/// It's a RAII object that constructs and destroys a C++ MarkerSchema object
+/// pointed to a specified reference.
+pub struct MarkerSchema {
+ pub(crate) pin: Pin<Box<MaybeUninit<mozilla::MarkerSchema>>>,
+}
+
+impl MarkerSchema {
+ // Initialize a marker schema with the given `Location`s.
+ pub fn new(locations: &[Location]) -> Self {
+ let mut marker_schema = Box::pin(std::mem::MaybeUninit::<mozilla::MarkerSchema>::uninit());
+
+ unsafe {
+ bindings::gecko_profiler_construct_marker_schema(
+ marker_schema.deref_mut().as_mut_ptr(),
+ locations.as_ptr(),
+ locations.len(),
+ );
+ }
+ MarkerSchema { pin: marker_schema }
+ }
+
+ /// Marker schema for types that have special frontend handling.
+ /// Nothing else should be set in this case.
+ pub fn new_with_special_frontend_location() -> Self {
+ let mut marker_schema = Box::pin(std::mem::MaybeUninit::<mozilla::MarkerSchema>::uninit());
+ unsafe {
+ bindings::gecko_profiler_construct_marker_schema_with_special_front_end_location(
+ marker_schema.deref_mut().as_mut_ptr(),
+ );
+ }
+ MarkerSchema { pin: marker_schema }
+ }
+
+ /// Optional label in the marker chart.
+ /// If not provided, the marker "name" will be used. The given string
+ /// can contain element keys in braces to include data elements streamed by
+ /// `stream_json_marker_data()`. E.g.: "This is {marker.data.text}"
+ pub fn set_chart_label(&mut self, label: &str) -> &mut Self {
+ unsafe {
+ bindings::gecko_profiler_marker_schema_set_chart_label(
+ self.pin.deref_mut().as_mut_ptr(),
+ label.as_ptr() as *const c_char,
+ label.len(),
+ );
+ }
+ self
+ }
+
+ /// Optional label in the marker chart tooltip.
+ /// If not provided, the marker "name" will be used. The given string
+ /// can contain element keys in braces to include data elements streamed by
+ /// `stream_json_marker_data()`. E.g.: "This is {marker.data.text}"
+ pub fn set_tooltip_label(&mut self, label: &str) -> &mut Self {
+ unsafe {
+ bindings::gecko_profiler_marker_schema_set_tooltip_label(
+ self.pin.deref_mut().as_mut_ptr(),
+ label.as_ptr() as *const c_char,
+ label.len(),
+ );
+ }
+ self
+ }
+
+ /// Optional label in the marker table.
+ /// If not provided, the marker "name" will be used. The given string
+ /// can contain element keys in braces to include data elements streamed by
+ /// `stream_json_marker_data()`. E.g.: "This is {marker.data.text}"
+ pub fn set_table_label(&mut self, label: &str) -> &mut Self {
+ unsafe {
+ bindings::gecko_profiler_marker_schema_set_table_label(
+ self.pin.deref_mut().as_mut_ptr(),
+ label.as_ptr() as *const c_char,
+ label.len(),
+ );
+ }
+ self
+ }
+
+ /// Set all marker chart / marker tooltip / marker table labels with the same text.
+ /// Same as the individual methods, the given string can contain element keys
+ /// in braces to include data elements streamed by `stream_json_marker_data()`.
+ /// E.g.: "This is {marker.data.text}"
+ pub fn set_all_labels(&mut self, label: &str) -> &mut Self {
+ unsafe {
+ bindings::gecko_profiler_marker_schema_set_all_labels(
+ self.pin.deref_mut().as_mut_ptr(),
+ label.as_ptr() as *const c_char,
+ label.len(),
+ );
+ }
+ self
+ }
+
+ // Each data element that is streamed by `stream_json_marker_data()` can be
+ // displayed as indicated by using one of the `add_...` function below.
+ // Each `add...` will add a line in the full marker description. Parameters:
+ // - `key`: Element property name as streamed by `stream_json_marker_data()`.
+ // - `label`: Optional label. Defaults to the key name.
+ // - `format`: How to format the data element value, see `Format` above.
+ // - `searchable`: Optional, indicates if the value is used in searches,
+ // defaults to false.
+
+ /// Add a key / format row for the marker data element.
+ /// - `key`: Element property name as streamed by `stream_json_marker_data()`.
+ /// - `format`: How to format the data element value, see `Format` above.
+ pub fn add_key_format(&mut self, key: &str, format: Format) -> &mut Self {
+ unsafe {
+ bindings::gecko_profiler_marker_schema_add_key_format(
+ self.pin.deref_mut().as_mut_ptr(),
+ key.as_ptr() as *const c_char,
+ key.len(),
+ format,
+ );
+ }
+ self
+ }
+
+ /// Add a key / label / format row for the marker data element.
+ /// - `key`: Element property name as streamed by `stream_json_marker_data()`.
+ /// - `label`: Optional label. Defaults to the key name.
+ /// - `format`: How to format the data element value, see `Format` above.
+ pub fn add_key_label_format(&mut self, key: &str, label: &str, format: Format) -> &mut Self {
+ unsafe {
+ bindings::gecko_profiler_marker_schema_add_key_label_format(
+ self.pin.deref_mut().as_mut_ptr(),
+ key.as_ptr() as *const c_char,
+ key.len(),
+ label.as_ptr() as *const c_char,
+ label.len(),
+ format,
+ );
+ }
+ self
+ }
+
+ /// Add a key / format / searchable row for the marker data element.
+ /// - `key`: Element property name as streamed by `stream_json_marker_data()`.
+ /// - `format`: How to format the data element value, see `Format` above.
+ pub fn add_key_format_searchable(
+ &mut self,
+ key: &str,
+ format: Format,
+ searchable: Searchable,
+ ) -> &mut Self {
+ unsafe {
+ bindings::gecko_profiler_marker_schema_add_key_format_searchable(
+ self.pin.deref_mut().as_mut_ptr(),
+ key.as_ptr() as *const c_char,
+ key.len(),
+ format,
+ searchable,
+ );
+ }
+ self
+ }
+
+ /// Add a key / label / format / searchable row for the marker data element.
+ /// - `key`: Element property name as streamed by `stream_json_marker_data()`.
+ /// - `label`: Optional label. Defaults to the key name.
+ /// - `format`: How to format the data element value, see `Format` above.
+ /// - `searchable`: Optional, indicates if the value is used in searches,
+ /// defaults to false.
+ pub fn add_key_label_format_searchable(
+ &mut self,
+ key: &str,
+ label: &str,
+ format: Format,
+ searchable: Searchable,
+ ) -> &mut Self {
+ unsafe {
+ bindings::gecko_profiler_marker_schema_add_key_label_format_searchable(
+ self.pin.deref_mut().as_mut_ptr(),
+ key.as_ptr() as *const c_char,
+ key.len(),
+ label.as_ptr() as *const c_char,
+ label.len(),
+ format,
+ searchable,
+ );
+ }
+ self
+ }
+
+ /// Add a key / value static row.
+ /// - `key`: Element property name as streamed by `stream_json_marker_data()`.
+ /// - `value`: Static value to display.
+ pub fn add_static_label_value(&mut self, label: &str, value: &str) -> &mut Self {
+ unsafe {
+ bindings::gecko_profiler_marker_schema_add_static_label_value(
+ self.pin.deref_mut().as_mut_ptr(),
+ label.as_ptr() as *const c_char,
+ label.len(),
+ value.as_ptr() as *const c_char,
+ value.len(),
+ );
+ }
+ self
+ }
+}
+
+impl Drop for MarkerSchema {
+ fn drop(&mut self) {
+ unsafe {
+ bindings::gecko_profiler_destruct_marker_schema(self.pin.deref_mut().as_mut_ptr());
+ }
+ }
+}
diff --git a/tools/profiler/rust-api/src/profiler_state.rs b/tools/profiler/rust-api/src/profiler_state.rs
new file mode 100644
index 0000000000..0d5359684d
--- /dev/null
+++ b/tools/profiler/rust-api/src/profiler_state.rs
@@ -0,0 +1,78 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this file,
+ * You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+//! Gecko profiler state.
+
+/// Whether the Gecko profiler is currently active.
+/// A typical use of this API:
+/// ```rust
+/// if gecko_profiler::is_active() {
+/// // do something.
+/// }
+/// ```
+///
+/// This implementation must be kept in sync with
+/// `mozilla::profiler::detail::RacyFeatures::IsActive`.
+#[cfg(feature = "enabled")]
+#[inline]
+pub fn is_active() -> bool {
+ use crate::gecko_bindings::structs::mozilla::profiler::detail;
+
+ let active_and_features = get_active_and_features();
+ (active_and_features & detail::RacyFeatures_Active) != 0
+}
+
+/// Always false when MOZ_GECKO_PROFILER is not defined.
+#[cfg(not(feature = "enabled"))]
+#[inline]
+pub fn is_active() -> bool {
+ false
+}
+
+/// Whether the Gecko Profiler can accept markers.
+/// Similar to `is_active`, but with some extra checks that determine if the
+/// profiler would currently store markers. So this should be used before
+/// doing some potentially-expensive work that's used in a marker. E.g.:
+///
+/// ```rust
+/// if gecko_profiler::can_accept_markers() {
+/// // Do something expensive and add the marker with that data.
+/// }
+/// ```
+///
+/// This implementation must be kept in sync with
+/// `mozilla::profiler::detail::RacyFeatures::IsActiveAndUnpaused`.
+#[cfg(feature = "enabled")]
+#[inline]
+pub fn can_accept_markers() -> bool {
+ use crate::gecko_bindings::structs::mozilla::profiler::detail;
+
+ let active_and_features = get_active_and_features();
+ (active_and_features & detail::RacyFeatures_Active) != 0
+ && (active_and_features & detail::RacyFeatures_Paused) == 0
+}
+
+/// Always false when MOZ_GECKO_PROFILER is not defined.
+#[cfg(not(feature = "enabled"))]
+#[inline]
+pub fn can_accept_markers() -> bool {
+ false
+}
+
+/// Returns the value of atomic `RacyFeatures::sActiveAndFeatures` from the C++ side.
+#[cfg(feature = "enabled")]
+#[inline]
+fn get_active_and_features() -> u32 {
+ use crate::gecko_bindings::structs::mozilla::profiler::detail;
+ use std::mem;
+ use std::sync::atomic::{AtomicU32, Ordering};
+
+ // This is reaching for the C++ atomic value instead of calling an FFI
+ // function to return this value. Because, calling an FFI function is much
+ // more expensive compared to this method. That's why it's worth to go with
+ // this solution for performance. But it's crucial to keep the implementation
+ // of this and the callers in sync with the C++ counterparts.
+ unsafe { mem::transmute::<_, &AtomicU32>(&detail::RacyFeatures_sActiveAndFeatures) }
+ .load(Ordering::Relaxed)
+}
diff --git a/tools/profiler/rust-api/src/thread.rs b/tools/profiler/rust-api/src/thread.rs
new file mode 100644
index 0000000000..353469a4bb
--- /dev/null
+++ b/tools/profiler/rust-api/src/thread.rs
@@ -0,0 +1,23 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this file,
+ * You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+///! Profiler API for thread registration and unregistration.
+use crate::gecko_bindings::bindings;
+use std::ffi::CString;
+
+/// Register a thread with the Gecko Profiler.
+pub fn register_thread(thread_name: &str) {
+ let name = CString::new(thread_name).unwrap();
+ unsafe {
+ // gecko_profiler_register_thread copies the passed name here.
+ bindings::gecko_profiler_register_thread(name.as_ptr());
+ }
+}
+
+/// Unregister a thread with the Gecko Profiler.
+pub fn unregister_thread() {
+ unsafe {
+ bindings::gecko_profiler_unregister_thread();
+ }
+}
diff --git a/tools/profiler/rust-api/src/time.rs b/tools/profiler/rust-api/src/time.rs
new file mode 100644
index 0000000000..56315690c9
--- /dev/null
+++ b/tools/profiler/rust-api/src/time.rs
@@ -0,0 +1,71 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this file,
+ * You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+//! Gecko profiler time.
+
+use crate::gecko_bindings::{bindings, structs::mozilla};
+use std::mem::MaybeUninit;
+
+/// Profiler time for the marker API.
+/// This should be used as the `MarkerTiming` parameter.
+/// E.g.:
+///
+/// ```
+/// let start = ProfilerTime::now();
+/// // ...some code...
+/// gecko_profiler::add_untyped_marker(
+/// "marker name",
+/// category,
+/// MarkerOptions {
+/// timing: MarkerTiming::interval_until_now_from(start),
+/// ..Default::default()
+/// },
+/// );
+/// ```
+#[derive(Debug)]
+pub struct ProfilerTime(pub(crate) mozilla::TimeStamp);
+
+impl ProfilerTime {
+ pub fn now() -> ProfilerTime {
+ let mut marker_timing = MaybeUninit::<mozilla::TimeStamp>::uninit();
+ unsafe {
+ bindings::gecko_profiler_construct_timestamp_now(marker_timing.as_mut_ptr());
+ ProfilerTime(marker_timing.assume_init())
+ }
+ }
+
+ pub fn add_microseconds(self, microseconds: f64) -> Self {
+ let mut dest = MaybeUninit::<mozilla::TimeStamp>::uninit();
+ unsafe {
+ bindings::gecko_profiler_add_timestamp(&self.0, dest.as_mut_ptr(), microseconds);
+ ProfilerTime(dest.assume_init())
+ }
+ }
+
+ pub fn subtract_microseconds(self, microseconds: f64) -> Self {
+ let mut dest = MaybeUninit::<mozilla::TimeStamp>::uninit();
+ unsafe {
+ bindings::gecko_profiler_subtract_timestamp(&self.0, dest.as_mut_ptr(), microseconds);
+ ProfilerTime(dest.assume_init())
+ }
+ }
+}
+
+impl Clone for ProfilerTime {
+ fn clone(&self) -> Self {
+ let mut dest = MaybeUninit::<mozilla::TimeStamp>::uninit();
+ unsafe {
+ bindings::gecko_profiler_clone_timestamp(&self.0, dest.as_mut_ptr());
+ ProfilerTime(dest.assume_init())
+ }
+ }
+}
+
+impl Drop for ProfilerTime {
+ fn drop(&mut self) {
+ unsafe {
+ bindings::gecko_profiler_destruct_timestamp(&mut self.0);
+ }
+ }
+}
diff --git a/tools/profiler/rust-helper/Cargo.toml b/tools/profiler/rust-helper/Cargo.toml
new file mode 100644
index 0000000000..6d3d168ed4
--- /dev/null
+++ b/tools/profiler/rust-helper/Cargo.toml
@@ -0,0 +1,23 @@
+[package]
+name = "profiler_helper"
+version = "0.1.0"
+authors = ["Markus Stange <mstange@themasta.com>"]
+license = "MPL-2.0"
+
+[dependencies]
+memmap2 = "0.5"
+rustc-demangle = "0.1"
+uuid = "1.0"
+
+[dependencies.object]
+version = "0.30"
+optional = true
+default-features = false
+features = ["std", "read_core", "elf"]
+
+[dependencies.thin-vec]
+version = "0.2.1"
+features = ["gecko-ffi"]
+
+[features]
+parse_elf = ["object"]
diff --git a/tools/profiler/rust-helper/src/compact_symbol_table.rs b/tools/profiler/rust-helper/src/compact_symbol_table.rs
new file mode 100644
index 0000000000..12c4ca081b
--- /dev/null
+++ b/tools/profiler/rust-helper/src/compact_symbol_table.rs
@@ -0,0 +1,40 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this file,
+ * You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+use std::collections::HashMap;
+use thin_vec::ThinVec;
+
+#[repr(C)]
+pub struct CompactSymbolTable {
+ pub addr: ThinVec<u32>,
+ pub index: ThinVec<u32>,
+ pub buffer: ThinVec<u8>,
+}
+
+impl CompactSymbolTable {
+ pub fn new() -> Self {
+ Self {
+ addr: ThinVec::new(),
+ index: ThinVec::new(),
+ buffer: ThinVec::new(),
+ }
+ }
+
+ pub fn from_map(map: HashMap<u32, &str>) -> Self {
+ let mut table = Self::new();
+ let mut entries: Vec<_> = map.into_iter().collect();
+ entries.sort_by_key(|&(addr, _)| addr);
+ for (addr, name) in entries {
+ table.addr.push(addr);
+ table.index.push(table.buffer.len() as u32);
+ table.add_name(name);
+ }
+ table.index.push(table.buffer.len() as u32);
+ table
+ }
+
+ fn add_name(&mut self, name: &str) {
+ self.buffer.extend_from_slice(name.as_bytes());
+ }
+}
diff --git a/tools/profiler/rust-helper/src/elf.rs b/tools/profiler/rust-helper/src/elf.rs
new file mode 100644
index 0000000000..4930884f05
--- /dev/null
+++ b/tools/profiler/rust-helper/src/elf.rs
@@ -0,0 +1,101 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this file,
+ * You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+use compact_symbol_table::CompactSymbolTable;
+use object::read::{NativeFile, Object};
+use object::{ObjectSection, ObjectSymbol, SectionKind, SymbolKind};
+use std::cmp;
+use std::collections::HashMap;
+use uuid::Uuid;
+
+const UUID_SIZE: usize = 16;
+const PAGE_SIZE: usize = 4096;
+
+fn get_symbol_map<'a: 'b, 'b, T>(object_file: &'b T) -> HashMap<u32, &'a str>
+where
+ T: Object<'a, 'b>,
+{
+ object_file
+ .dynamic_symbols()
+ .chain(object_file.symbols())
+ .filter(|symbol| symbol.kind() == SymbolKind::Text)
+ .filter_map(|symbol| {
+ symbol
+ .name()
+ .map(|name| (symbol.address() as u32, name))
+ .ok()
+ })
+ .collect()
+}
+
+pub fn get_compact_symbol_table(
+ buffer: &[u8],
+ breakpad_id: Option<&str>,
+) -> Option<CompactSymbolTable> {
+ let elf_file = NativeFile::parse(buffer).ok()?;
+ let elf_id = get_elf_id(&elf_file)?;
+ if !breakpad_id.map_or(true, |id| id == format!("{:X}0", elf_id.as_simple())) {
+ return None;
+ }
+ return Some(CompactSymbolTable::from_map(get_symbol_map(&elf_file)));
+}
+
+fn create_elf_id(identifier: &[u8], little_endian: bool) -> Uuid {
+ // Make sure that we have exactly UUID_SIZE bytes available
+ let mut data = [0 as u8; UUID_SIZE];
+ let len = cmp::min(identifier.len(), UUID_SIZE);
+ data[0..len].copy_from_slice(&identifier[0..len]);
+
+ if little_endian {
+ // The file ELF file targets a little endian architecture. Convert to
+ // network byte order (big endian) to match the Breakpad processor's
+ // expectations. For big endian object files, this is not needed.
+ data[0..4].reverse(); // uuid field 1
+ data[4..6].reverse(); // uuid field 2
+ data[6..8].reverse(); // uuid field 3
+ }
+
+ Uuid::from_bytes(data)
+}
+
+/// Tries to obtain the object identifier of an ELF object.
+///
+/// As opposed to Mach-O, ELF does not specify a unique ID for object files in
+/// its header. Compilers and linkers usually add either `SHT_NOTE` sections or
+/// `PT_NOTE` program header elements for this purpose. If one of these notes
+/// is present, ElfFile's build_id() method will find it.
+///
+/// If neither of the above are present, this function will hash the first page
+/// of the `.text` section (program code). This matches what the Breakpad
+/// processor does.
+///
+/// If all of the above fails, this function will return `None`.
+pub fn get_elf_id(elf_file: &NativeFile) -> Option<Uuid> {
+ if let Ok(Some(identifier)) = elf_file.build_id() {
+ return Some(create_elf_id(identifier, elf_file.is_little_endian()));
+ }
+
+ // We were not able to locate the build ID, so fall back to hashing the
+ // first page of the ".text" (program code) section. This algorithm XORs
+ // 16-byte chunks directly into a UUID buffer.
+ if let Some(section_data) = find_text_section(elf_file) {
+ let mut hash = [0; UUID_SIZE];
+ for i in 0..cmp::min(section_data.len(), PAGE_SIZE) {
+ hash[i % UUID_SIZE] ^= section_data[i];
+ }
+ return Some(create_elf_id(&hash, elf_file.is_little_endian()));
+ }
+
+ None
+}
+
+/// Returns a reference to the data of the the .text section in an ELF binary.
+fn find_text_section<'elf>(elf_file: &'elf NativeFile) -> Option<&'elf [u8]> {
+ if let Some(section) = elf_file.section_by_name(".text") {
+ if section.kind() == SectionKind::Text {
+ return section.data().ok();
+ }
+ }
+ None
+}
diff --git a/tools/profiler/rust-helper/src/lib.rs b/tools/profiler/rust-helper/src/lib.rs
new file mode 100644
index 0000000000..22f8e04a2e
--- /dev/null
+++ b/tools/profiler/rust-helper/src/lib.rs
@@ -0,0 +1,107 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this file,
+ * You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+extern crate memmap2;
+extern crate rustc_demangle;
+extern crate thin_vec;
+extern crate uuid;
+
+#[cfg(feature = "parse_elf")]
+extern crate object;
+
+mod compact_symbol_table;
+
+#[cfg(feature = "parse_elf")]
+mod elf;
+
+#[cfg(feature = "parse_elf")]
+use memmap2::MmapOptions;
+#[cfg(feature = "parse_elf")]
+use std::fs::File;
+
+use compact_symbol_table::CompactSymbolTable;
+use rustc_demangle::try_demangle;
+use std::ffi::CStr;
+use std::mem;
+use std::os::raw::c_char;
+use std::ptr;
+
+#[cfg(feature = "parse_elf")]
+pub fn get_compact_symbol_table_from_file(
+ debug_path: &str,
+ breakpad_id: Option<&str>,
+) -> Option<CompactSymbolTable> {
+ let file = File::open(debug_path).ok()?;
+ let buffer = unsafe { MmapOptions::new().map(&file).ok()? };
+ elf::get_compact_symbol_table(&buffer, breakpad_id)
+}
+
+#[cfg(not(feature = "parse_elf"))]
+pub fn get_compact_symbol_table_from_file(
+ _debug_path: &str,
+ _breakpad_id: Option<&str>,
+) -> Option<CompactSymbolTable> {
+ None
+}
+
+#[no_mangle]
+pub unsafe extern "C" fn profiler_get_symbol_table(
+ debug_path: *const c_char,
+ breakpad_id: *const c_char,
+ symbol_table: &mut CompactSymbolTable,
+) -> bool {
+ let debug_path = CStr::from_ptr(debug_path).to_string_lossy();
+ let breakpad_id = if breakpad_id.is_null() {
+ None
+ } else {
+ match CStr::from_ptr(breakpad_id).to_str() {
+ Ok(s) => Some(s),
+ Err(_) => return false,
+ }
+ };
+
+ match get_compact_symbol_table_from_file(&debug_path, breakpad_id.map(|id| id.as_ref())) {
+ Some(mut st) => {
+ std::mem::swap(symbol_table, &mut st);
+ true
+ }
+ None => false,
+ }
+}
+
+#[no_mangle]
+pub unsafe extern "C" fn profiler_demangle_rust(
+ mangled: *const c_char,
+ buffer: *mut c_char,
+ buffer_len: usize,
+) -> bool {
+ assert!(!mangled.is_null());
+ assert!(!buffer.is_null());
+
+ if buffer_len == 0 {
+ return false;
+ }
+
+ let buffer: *mut u8 = mem::transmute(buffer);
+ let mangled = match CStr::from_ptr(mangled).to_str() {
+ Ok(s) => s,
+ Err(_) => return false,
+ };
+
+ match try_demangle(mangled) {
+ Ok(demangled) => {
+ let mut demangled = format!("{:#}", demangled);
+ if !demangled.is_ascii() {
+ return false;
+ }
+ demangled.truncate(buffer_len - 1);
+
+ let bytes = demangled.as_bytes();
+ ptr::copy(bytes.as_ptr(), buffer, bytes.len());
+ ptr::write(buffer.offset(bytes.len() as isize), 0);
+ true
+ }
+ Err(_) => false,
+ }
+}
diff --git a/tools/profiler/tests/browser/browser.ini b/tools/profiler/tests/browser/browser.ini
new file mode 100644
index 0000000000..654446e36e
--- /dev/null
+++ b/tools/profiler/tests/browser/browser.ini
@@ -0,0 +1,102 @@
+[DEFAULT]
+skip-if = tsan # Bug 1804081 - TSan times out on pretty much all of these tests
+support-files =
+ ../shared-head.js
+ head.js
+
+[browser_test_feature_ipcmessages.js]
+support-files = simple.html
+
+[browser_test_feature_jsallocations.js]
+support-files = do_work_500ms.html
+
+[browser_test_feature_nostacksampling.js]
+support-files = do_work_500ms.html
+
+[browser_test_markers_parent_process.js]
+skip-if =
+ os == "win" && os_version == "6.1" # Skip on Azure - frequent failure
+
+[browser_test_markers_preferencereads.js]
+support-files = single_frame.html
+
+[browser_test_markers_gc_cc.js]
+
+[browser_test_profile_capture_by_pid.js]
+skip-if = os == "win" && os_version == "6.1" # No thread names on win7, needed for these tests
+https_first_disabled = true
+support-files = single_frame.html
+
+[browser_test_profile_fission.js]
+support-files = single_frame.html
+
+[browser_test_profile_single_frame_page_info.js]
+https_first_disabled = true
+support-files = single_frame.html
+
+[browser_test_profile_slow_capture.js]
+https_first_disabled = true
+support-files = single_frame.html
+skip-if = !debug
+
+[browser_test_profile_multi_frame_page_info.js]
+https_first_disabled = true
+support-files =
+ multi_frame.html
+ single_frame.html
+
+[browser_test_marker_network_simple.js]
+https_first_disabled = true
+support-files = simple.html
+
+[browser_test_marker_network_private_browsing.js]
+support-files = simple.html
+
+[browser_test_marker_network_cancel.js]
+https_first_disabled = true
+support-files = simple.html
+
+[browser_test_marker_network_sts.js]
+support-files = simple.html
+
+[browser_test_marker_network_redirect.js]
+https_first_disabled = true
+support-files =
+ redirect.sjs
+ simple.html
+ page_with_resources.html
+ firefox-logo-nightly.svg
+skip-if =
+ os == "win" && os_version == "6.1" # Skip on Azure - frequent failure
+
+[browser_test_marker_network_serviceworker_cache_first.js]
+support-files =
+ serviceworkers/serviceworker-utils.js
+ serviceworkers/serviceworker_register.html
+ serviceworkers/serviceworker_page.html
+ serviceworkers/firefox-logo-nightly.svg
+ serviceworkers/serviceworker_cache_first.js
+
+[browser_test_marker_network_serviceworker_no_fetch_handler.js]
+support-files =
+ serviceworkers/serviceworker-utils.js
+ serviceworkers/serviceworker_register.html
+ serviceworkers/serviceworker_page.html
+ serviceworkers/firefox-logo-nightly.svg
+ serviceworkers/serviceworker_no_fetch_handler.js
+
+[browser_test_marker_network_serviceworker_no_respondWith_in_fetch_handler.js]
+support-files =
+ serviceworkers/serviceworker-utils.js
+ serviceworkers/serviceworker_register.html
+ serviceworkers/serviceworker_page.html
+ serviceworkers/firefox-logo-nightly.svg
+ serviceworkers/serviceworker_no_respondWith_in_fetch_handler.js
+
+[browser_test_marker_network_serviceworker_synthetized_response.js]
+support-files =
+ serviceworkers/serviceworker-utils.js
+ serviceworkers/serviceworker_register.html
+ serviceworkers/serviceworker_simple.html
+ serviceworkers/firefox-logo-nightly.svg
+ serviceworkers/serviceworker_synthetized_response.js
diff --git a/tools/profiler/tests/browser/browser_test_feature_ipcmessages.js b/tools/profiler/tests/browser/browser_test_feature_ipcmessages.js
new file mode 100644
index 0000000000..f5fb2921a1
--- /dev/null
+++ b/tools/profiler/tests/browser/browser_test_feature_ipcmessages.js
@@ -0,0 +1,100 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+requestLongerTimeout(10);
+
+async function waitForLoad() {
+ return SpecialPowers.spawn(gBrowser.selectedBrowser, [], () => {
+ return new Promise(function (resolve) {
+ if (content.document.readyState !== "complete") {
+ content.document.addEventListener("readystatechange", () => {
+ if (content.document.readyState === "complete") {
+ resolve();
+ }
+ });
+ } else {
+ resolve();
+ }
+ });
+ });
+}
+
+/**
+ * Test the IPCMessages feature.
+ */
+add_task(async function test_profile_feature_ipcmessges() {
+ const url = BASE_URL + "simple.html";
+
+ info("Open a tab while profiling IPC messages.");
+ await startProfiler({ features: ["js", "ipcmessages"] });
+ info("Started the profiler sucessfully! Now, let's open a tab.");
+
+ await BrowserTestUtils.withNewTab(url, async contentBrowser => {
+ info("We opened a tab!");
+ const contentPid = await SpecialPowers.spawn(
+ contentBrowser,
+ [],
+ () => Services.appinfo.processID
+ );
+ info("Now let's wait until it's fully loaded.");
+ await waitForLoad();
+
+ info(
+ "Check that some IPC profile markers were generated when " +
+ "the feature is enabled."
+ );
+ {
+ const { parentThread, contentThread } =
+ await waitSamplingAndStopProfilerAndGetThreads(contentPid);
+
+ Assert.greater(
+ getPayloadsOfType(parentThread, "IPC").length,
+ 0,
+ "IPC profile markers were recorded for the parent process' main " +
+ "thread when the IPCMessages feature was turned on."
+ );
+
+ Assert.greater(
+ getPayloadsOfType(contentThread, "IPC").length,
+ 0,
+ "IPC profile markers were recorded for the content process' main " +
+ "thread when the IPCMessages feature was turned on."
+ );
+ }
+ });
+
+ info("Now open a tab without profiling IPC messages.");
+ await startProfiler({ features: ["js"] });
+
+ await BrowserTestUtils.withNewTab(url, async contentBrowser => {
+ const contentPid = await SpecialPowers.spawn(
+ contentBrowser,
+ [],
+ () => Services.appinfo.processID
+ );
+ await waitForLoad();
+
+ info(
+ "Check that no IPC profile markers were recorded when the " +
+ "feature is turned off."
+ );
+ {
+ const { parentThread, contentThread } =
+ await waitSamplingAndStopProfilerAndGetThreads(contentPid);
+ Assert.equal(
+ getPayloadsOfType(parentThread, "IPC").length,
+ 0,
+ "No IPC profile markers were recorded for the parent process' main " +
+ "thread when the IPCMessages feature was turned off."
+ );
+
+ Assert.equal(
+ getPayloadsOfType(contentThread, "IPC").length,
+ 0,
+ "No IPC profile markers were recorded for the content process' main " +
+ "thread when the IPCMessages feature was turned off."
+ );
+ }
+ });
+});
diff --git a/tools/profiler/tests/browser/browser_test_feature_jsallocations.js b/tools/profiler/tests/browser/browser_test_feature_jsallocations.js
new file mode 100644
index 0000000000..60d072bed9
--- /dev/null
+++ b/tools/profiler/tests/browser/browser_test_feature_jsallocations.js
@@ -0,0 +1,74 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+requestLongerTimeout(10);
+
+/**
+ * Test the JS Allocations feature. This is done as a browser test to ensure that
+ * we realistically try out how the JS allocations are running. This ensures that
+ * we are collecting allocations for the content process and the parent process.
+ */
+add_task(async function test_profile_feature_jsallocations() {
+ Assert.ok(
+ !Services.profiler.IsActive(),
+ "The profiler is not currently active"
+ );
+
+ await startProfiler({ features: ["js", "jsallocations"] });
+
+ const url = BASE_URL + "do_work_500ms.html";
+ await BrowserTestUtils.withNewTab(url, async contentBrowser => {
+ const contentPid = await SpecialPowers.spawn(
+ contentBrowser,
+ [],
+ () => Services.appinfo.processID
+ );
+
+ // Wait 500ms so that the tab finishes executing.
+ await wait(500);
+
+ // Check that we can get some allocations when the feature is turned on.
+ {
+ const { parentThread, contentThread } =
+ await waitSamplingAndStopProfilerAndGetThreads(contentPid);
+ Assert.greater(
+ getPayloadsOfType(parentThread, "JS allocation").length,
+ 0,
+ "Allocations were recorded for the parent process' main thread when the " +
+ "JS Allocation feature was turned on."
+ );
+ Assert.greater(
+ getPayloadsOfType(contentThread, "JS allocation").length,
+ 0,
+ "Allocations were recorded for the content process' main thread when the " +
+ "JS Allocation feature was turned on."
+ );
+ }
+
+ await startProfiler({ features: ["js"] });
+ // Now reload the tab with a clean run.
+ gBrowser.reload();
+ await wait(500);
+
+ // Check that no allocations were recorded, and allocation tracking was correctly
+ // turned off.
+ {
+ const { parentThread, contentThread } =
+ await waitSamplingAndStopProfilerAndGetThreads(contentPid);
+ Assert.equal(
+ getPayloadsOfType(parentThread, "JS allocation").length,
+ 0,
+ "No allocations were recorded for the parent processes' main thread when " +
+ "JS allocation was not turned on."
+ );
+
+ Assert.equal(
+ getPayloadsOfType(contentThread, "JS allocation").length,
+ 0,
+ "No allocations were recorded for the content processes' main thread when " +
+ "JS allocation was not turned on."
+ );
+ }
+ });
+});
diff --git a/tools/profiler/tests/browser/browser_test_feature_nostacksampling.js b/tools/profiler/tests/browser/browser_test_feature_nostacksampling.js
new file mode 100644
index 0000000000..323a87e191
--- /dev/null
+++ b/tools/profiler/tests/browser/browser_test_feature_nostacksampling.js
@@ -0,0 +1,72 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+/**
+ * Test the No Stack Sampling feature.
+ */
+add_task(async function test_profile_feature_nostacksampling() {
+ Assert.ok(
+ !Services.profiler.IsActive(),
+ "The profiler is not currently active"
+ );
+
+ await startProfiler({ features: ["js", "nostacksampling"] });
+
+ const url = BASE_URL + "do_work_500ms.html";
+ await BrowserTestUtils.withNewTab(url, async contentBrowser => {
+ const contentPid = await SpecialPowers.spawn(
+ contentBrowser,
+ [],
+ () => Services.appinfo.processID
+ );
+
+ // Wait 500ms so that the tab finishes executing.
+ await wait(500);
+
+ // Check that we can get no stacks when the feature is turned on.
+ {
+ const { parentThread, contentThread } =
+ await stopProfilerNowAndGetThreads(contentPid);
+ Assert.equal(
+ parentThread.samples.data.length,
+ 0,
+ "Stack samples were recorded from the parent process' main thread" +
+ "when the No Stack Sampling feature was turned on."
+ );
+ Assert.equal(
+ contentThread.samples.data.length,
+ 0,
+ "Stack samples were recorded from the content process' main thread" +
+ "when the No Stack Sampling feature was turned on."
+ );
+ }
+
+ // Flush out any straggling allocation markers that may have not been collected
+ // yet by starting and stopping the profiler once.
+ await startProfiler({ features: ["js"] });
+
+ // Now reload the tab with a clean run.
+ gBrowser.reload();
+ await wait(500);
+
+ // Check that stack samples were recorded.
+ {
+ const { parentThread, contentThread } =
+ await waitSamplingAndStopProfilerAndGetThreads(contentPid);
+ Assert.greater(
+ parentThread.samples.data.length,
+ 0,
+ "No Stack samples were recorded from the parent process' main thread" +
+ "when the No Stack Sampling feature was not turned on."
+ );
+
+ Assert.greater(
+ contentThread.samples.data.length,
+ 0,
+ "No Stack samples were recorded from the content process' main thread" +
+ "when the No Stack Sampling feature was not turned on."
+ );
+ }
+ });
+});
diff --git a/tools/profiler/tests/browser/browser_test_marker_network_cancel.js b/tools/profiler/tests/browser/browser_test_marker_network_cancel.js
new file mode 100644
index 0000000000..0a850487af
--- /dev/null
+++ b/tools/profiler/tests/browser/browser_test_marker_network_cancel.js
@@ -0,0 +1,71 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+/**
+ * Test that we emit network markers with the cancel status.
+ */
+add_task(async function test_network_markers_early_cancel() {
+ Assert.ok(
+ !Services.profiler.IsActive(),
+ "The profiler is not currently active"
+ );
+
+ startProfilerForMarkerTests();
+
+ const url = BASE_URL + "simple.html?cacheBust=" + Math.random();
+ const options = {
+ gBrowser,
+ url: "about:blank",
+ waitForLoad: false,
+ };
+
+ const tab = await BrowserTestUtils.openNewForegroundTab(options);
+ const loadPromise = BrowserTestUtils.waitForDocLoadAndStopIt(url, tab);
+ BrowserTestUtils.loadURIString(tab.linkedBrowser, url);
+ const contentPid = await SpecialPowers.spawn(
+ tab.linkedBrowser,
+ [],
+ () => Services.appinfo.processID
+ );
+ await loadPromise;
+ const { parentThread, contentThread } = await stopProfilerNowAndGetThreads(
+ contentPid
+ );
+ BrowserTestUtils.removeTab(tab);
+
+ const parentNetworkMarkers = getInflatedNetworkMarkers(parentThread);
+ const contentNetworkMarkers = getInflatedNetworkMarkers(contentThread);
+
+ info("parent process: " + JSON.stringify(parentNetworkMarkers, null, 2));
+ info("content process: " + JSON.stringify(contentNetworkMarkers, null, 2));
+
+ Assert.equal(
+ parentNetworkMarkers.length,
+ 2,
+ `We should get a pair of network markers in the parent thread.`
+ );
+
+ // We don't test the markers in the content process, because depending on some
+ // timing we can have 0 or 1 (and maybe even 2 (?)).
+
+ const parentStopMarker = parentNetworkMarkers[1];
+
+ const expectedProperties = {
+ name: Expect.stringMatches(`Load \\d+:.*${escapeStringRegexp(url)}`),
+ data: Expect.objectContainsOnly({
+ type: "Network",
+ status: "STATUS_CANCEL",
+ URI: url,
+ requestMethod: "GET",
+ contentType: null,
+ startTime: Expect.number(),
+ endTime: Expect.number(),
+ id: Expect.number(),
+ pri: Expect.number(),
+ cache: "Unresolved",
+ }),
+ };
+
+ Assert.objectContains(parentStopMarker, expectedProperties);
+});
diff --git a/tools/profiler/tests/browser/browser_test_marker_network_private_browsing.js b/tools/profiler/tests/browser/browser_test_marker_network_private_browsing.js
new file mode 100644
index 0000000000..f898ebda29
--- /dev/null
+++ b/tools/profiler/tests/browser/browser_test_marker_network_private_browsing.js
@@ -0,0 +1,91 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+/**
+ * Test that we emit network markers accordingly
+ */
+add_task(async function test_network_markers() {
+ Assert.ok(
+ !Services.profiler.IsActive(),
+ "The profiler is not currently active"
+ );
+
+ startProfilerForMarkerTests();
+
+ const win = await BrowserTestUtils.openNewBrowserWindow({
+ private: true,
+ fission: true,
+ });
+ try {
+ const url = BASE_URL_HTTPS + "simple.html?cacheBust=" + Math.random();
+ const contentBrowser = win.gBrowser.selectedBrowser;
+ BrowserTestUtils.loadURIString(contentBrowser, url);
+ await BrowserTestUtils.browserLoaded(contentBrowser, false, url);
+ const contentPid = await SpecialPowers.spawn(
+ contentBrowser,
+ [],
+ () => Services.appinfo.processID
+ );
+
+ const { parentThread, contentThread } = await stopProfilerNowAndGetThreads(
+ contentPid
+ );
+
+ const parentNetworkMarkers = getInflatedNetworkMarkers(parentThread);
+ const contentNetworkMarkers = getInflatedNetworkMarkers(contentThread);
+ info(JSON.stringify(parentNetworkMarkers, null, 2));
+ info(JSON.stringify(contentNetworkMarkers, null, 2));
+
+ Assert.equal(
+ parentNetworkMarkers.length,
+ 2,
+ `We should get a pair of network markers in the parent thread.`
+ );
+ Assert.equal(
+ contentNetworkMarkers.length,
+ 2,
+ `We should get a pair of network markers in the content thread.`
+ );
+
+ const parentStopMarker = parentNetworkMarkers[1];
+ const contentStopMarker = contentNetworkMarkers[1];
+
+ const expectedProperties = {
+ name: Expect.stringMatches(`Load \\d+:.*${escapeStringRegexp(url)}`),
+ data: Expect.objectContains({
+ status: "STATUS_STOP",
+ URI: url,
+ requestMethod: "GET",
+ contentType: "text/html",
+ startTime: Expect.number(),
+ endTime: Expect.number(),
+ domainLookupStart: Expect.number(),
+ domainLookupEnd: Expect.number(),
+ connectStart: Expect.number(),
+ tcpConnectEnd: Expect.number(),
+ connectEnd: Expect.number(),
+ requestStart: Expect.number(),
+ responseStart: Expect.number(),
+ responseEnd: Expect.number(),
+ id: Expect.number(),
+ count: Expect.number(),
+ pri: Expect.number(),
+ isPrivateBrowsing: true,
+ }),
+ };
+
+ Assert.objectContains(parentStopMarker, expectedProperties);
+ // The cache information is missing from the content marker, it's only part
+ // of the parent marker. See Bug 1544821.
+ Assert.objectContains(parentStopMarker.data, {
+ // Because the request races with the cache, these 2 values are valid:
+ // "Missed" when the cache answered before we get a result from the network.
+ // "Unresolved" when we got a response from the network before the cache subsystem.
+ cache: Expect.stringMatches(/^(Missed|Unresolved)$/),
+ });
+ Assert.objectContains(contentStopMarker, expectedProperties);
+ } finally {
+ await BrowserTestUtils.closeWindow(win);
+ }
+});
diff --git a/tools/profiler/tests/browser/browser_test_marker_network_redirect.js b/tools/profiler/tests/browser/browser_test_marker_network_redirect.js
new file mode 100644
index 0000000000..28478c2b3b
--- /dev/null
+++ b/tools/profiler/tests/browser/browser_test_marker_network_redirect.js
@@ -0,0 +1,341 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+/**
+ * Test that we emit network markers accordingly.
+ * In this file we'll test the redirect cases.
+ */
+add_task(async function test_network_markers_service_worker_setup() {
+ // Disabling cache makes the result more predictable especially in verify mode.
+ await SpecialPowers.pushPrefEnv({
+ set: [
+ ["browser.cache.disk.enable", false],
+ ["browser.cache.memory.enable", false],
+ ],
+ });
+});
+
+add_task(async function test_network_markers_redirect_simple() {
+ // In this test, we request an HTML page that gets redirected. This is a
+ // top-level navigation.
+ Assert.ok(
+ !Services.profiler.IsActive(),
+ "The profiler is not currently active"
+ );
+
+ startProfilerForMarkerTests();
+
+ const targetFileNameWithCacheBust = "simple.html";
+ const url =
+ BASE_URL +
+ "redirect.sjs?" +
+ encodeURIComponent(targetFileNameWithCacheBust);
+ const targetUrl = BASE_URL + targetFileNameWithCacheBust;
+
+ await BrowserTestUtils.withNewTab(url, async contentBrowser => {
+ const contentPid = await SpecialPowers.spawn(
+ contentBrowser,
+ [],
+ () => Services.appinfo.processID
+ );
+
+ const { parentThread, contentThread } = await stopProfilerNowAndGetThreads(
+ contentPid
+ );
+
+ const parentNetworkMarkers = getInflatedNetworkMarkers(parentThread);
+ const contentNetworkMarkers = getInflatedNetworkMarkers(contentThread);
+ info(JSON.stringify(parentNetworkMarkers, null, 2));
+ info(JSON.stringify(contentNetworkMarkers, null, 2));
+
+ Assert.equal(
+ parentNetworkMarkers.length,
+ 4,
+ `We should get 2 pairs of network markers in the parent thread.`
+ );
+
+ /* It looks like that for a redirection for the top level navigation, the
+ * content thread sees the markers for the second request only.
+ * See Bug 1692879. */
+ Assert.equal(
+ contentNetworkMarkers.length,
+ 2,
+ `We should get one pair of network markers in the content thread.`
+ );
+
+ const parentRedirectMarker = parentNetworkMarkers[1];
+ const parentStopMarker = parentNetworkMarkers[3];
+ // There's no content redirect marker for the reason outlined above.
+ const contentStopMarker = contentNetworkMarkers[1];
+
+ Assert.objectContains(parentRedirectMarker, {
+ name: Expect.stringMatches(`Load \\d+:.*${escapeStringRegexp(url)}`),
+ data: Expect.objectContainsOnly({
+ type: "Network",
+ status: "STATUS_REDIRECT",
+ URI: url,
+ RedirectURI: targetUrl,
+ requestMethod: "GET",
+ contentType: null,
+ startTime: Expect.number(),
+ endTime: Expect.number(),
+ domainLookupStart: Expect.number(),
+ domainLookupEnd: Expect.number(),
+ connectStart: Expect.number(),
+ tcpConnectEnd: Expect.number(),
+ connectEnd: Expect.number(),
+ requestStart: Expect.number(),
+ responseStart: Expect.number(),
+ responseEnd: Expect.number(),
+ id: Expect.number(),
+ redirectId: parentStopMarker.data.id,
+ pri: Expect.number(),
+ cache: Expect.stringMatches(/Missed|Unresolved/),
+ redirectType: "Permanent",
+ isHttpToHttpsRedirect: false,
+ }),
+ });
+
+ const expectedProperties = {
+ name: Expect.stringMatches(
+ `Load \\d+:.*${escapeStringRegexp(targetUrl)}`
+ ),
+ };
+ const expectedDataProperties = {
+ type: "Network",
+ status: "STATUS_STOP",
+ URI: targetUrl,
+ requestMethod: "GET",
+ contentType: "text/html",
+ startTime: Expect.number(),
+ endTime: Expect.number(),
+ domainLookupStart: Expect.number(),
+ domainLookupEnd: Expect.number(),
+ connectStart: Expect.number(),
+ tcpConnectEnd: Expect.number(),
+ connectEnd: Expect.number(),
+ requestStart: Expect.number(),
+ responseStart: Expect.number(),
+ responseEnd: Expect.number(),
+ id: Expect.number(),
+ count: Expect.number(),
+ pri: Expect.number(),
+ };
+
+ Assert.objectContains(parentStopMarker, expectedProperties);
+ Assert.objectContains(contentStopMarker, expectedProperties);
+
+ // The cache information is missing from the content marker, it's only part
+ // of the parent marker. See Bug 1544821.
+ Assert.objectContainsOnly(parentStopMarker.data, {
+ ...expectedDataProperties,
+ // Because the request races with the cache, these 2 values are valid:
+ // "Missed" when the cache answered before we get a result from the network.
+ // "Unresolved" when we got a response from the network before the cache subsystem.
+ cache: Expect.stringMatches(/^(Missed|Unresolved)$/),
+ });
+ Assert.objectContainsOnly(contentStopMarker.data, expectedDataProperties);
+ });
+});
+
+add_task(async function test_network_markers_redirect_resources() {
+ // In this test we request an HTML file that itself contains resources that
+ // are redirected.
+ Assert.ok(
+ !Services.profiler.IsActive(),
+ "The profiler is not currently active"
+ );
+
+ startProfilerForMarkerTests();
+
+ const url = BASE_URL + "page_with_resources.html?cacheBust=" + Math.random();
+ await BrowserTestUtils.withNewTab(url, async contentBrowser => {
+ const contentPid = await SpecialPowers.spawn(
+ contentBrowser,
+ [],
+ () => Services.appinfo.processID
+ );
+
+ const { parentThread, contentThread } = await stopProfilerNowAndGetThreads(
+ contentPid
+ );
+
+ const parentNetworkMarkers = getInflatedNetworkMarkers(parentThread);
+ const contentNetworkMarkers = getInflatedNetworkMarkers(contentThread);
+ info(JSON.stringify(parentNetworkMarkers, null, 2));
+ info(JSON.stringify(contentNetworkMarkers, null, 2));
+
+ Assert.equal(
+ parentNetworkMarkers.length,
+ 8,
+ `We should get 4 pairs of network markers in the parent thread.`
+ // 1 - The main page
+ // 2 - The SVG
+ // 3 - The redirected request for the second SVG request.
+ // 4 - The SVG, again
+ );
+
+ /* In this second test, the top level navigation request isn't redirected.
+ * Contrary to Bug 1692879 we get all network markers for redirected
+ * resources. */
+ Assert.equal(
+ contentNetworkMarkers.length,
+ 8,
+ `We should get 4 pairs of network markers in the content thread.`
+ );
+
+ // The same resource firefox-logo-nightly.svg is requested twice, but the
+ // second time it is redirected.
+ // We're not interested in the main page, as we test that in other files.
+ // In this page we're only interested in the marker for requested resources.
+
+ const parentPairs = getPairsOfNetworkMarkers(parentNetworkMarkers);
+ const contentPairs = getPairsOfNetworkMarkers(contentNetworkMarkers);
+
+ // First, make sure we properly matched all start with stop markers. This
+ // means that both arrays should contain only arrays of 2 elements.
+ parentPairs.forEach(pair =>
+ Assert.equal(
+ pair.length,
+ 2,
+ `For the URL ${pair[0].data.URI} we should get 2 markers in the parent process.`
+ )
+ );
+ contentPairs.forEach(pair =>
+ Assert.equal(
+ pair.length,
+ 2,
+ `For the URL ${pair[0].data.URI} we should get 2 markers in the content process.`
+ )
+ );
+
+ const parentFirstStopMarker = parentPairs[1][1];
+ const parentRedirectMarker = parentPairs[2][1];
+ const parentSecondStopMarker = parentPairs[3][1];
+ const contentFirstStopMarker = contentPairs[1][1];
+ const contentRedirectMarker = contentPairs[2][1];
+ const contentSecondStopMarker = contentPairs[3][1];
+
+ const expectedCommonDataProperties = {
+ type: "Network",
+ requestMethod: "GET",
+ startTime: Expect.number(),
+ endTime: Expect.number(),
+ id: Expect.number(),
+ pri: Expect.number(),
+ innerWindowID: Expect.number(),
+ };
+
+ // These properties are present when a connection is fully opened. This is
+ // most often the case, unless we're in verify mode, because in that case
+ // we run the same tests several times in the same Firefox and they might be
+ // cached, or in chaos mode Firefox may make all requests sequentially on
+ // the same connection.
+ // In these cases, these properties won't always be present.
+ const expectedConnectionProperties = {
+ domainLookupStart: Expect.number(),
+ domainLookupEnd: Expect.number(),
+ connectStart: Expect.number(),
+ tcpConnectEnd: Expect.number(),
+ connectEnd: Expect.number(),
+ requestStart: Expect.number(),
+ responseStart: Expect.number(),
+ responseEnd: Expect.number(),
+ };
+
+ const expectedPropertiesForStopMarker = {
+ name: Expect.stringMatches(/Load \d+:.*\/firefox-logo-nightly\.svg/),
+ };
+
+ const expectedDataPropertiesForStopMarker = {
+ ...expectedCommonDataProperties,
+ ...expectedConnectionProperties,
+ status: "STATUS_STOP",
+ URI: Expect.stringContains("/firefox-logo-nightly.svg"),
+ contentType: "image/svg+xml",
+ count: Expect.number(),
+ };
+
+ const expectedPropertiesForRedirectMarker = {
+ name: Expect.stringMatches(
+ /Load \d+:.*\/redirect.sjs\?firefox-logo-nightly\.svg/
+ ),
+ };
+
+ const expectedDataPropertiesForRedirectMarker = {
+ ...expectedCommonDataProperties,
+ ...expectedConnectionProperties,
+ status: "STATUS_REDIRECT",
+ URI: Expect.stringContains("/redirect.sjs?firefox-logo-nightly.svg"),
+ RedirectURI: Expect.stringContains("/firefox-logo-nightly.svg"),
+ contentType: null,
+ redirectType: "Permanent",
+ isHttpToHttpsRedirect: false,
+ };
+
+ Assert.objectContains(
+ parentFirstStopMarker,
+ expectedPropertiesForStopMarker
+ );
+ Assert.objectContainsOnly(parentFirstStopMarker.data, {
+ ...expectedDataPropertiesForStopMarker,
+ // The cache information is missing from the content marker, it's only part
+ // of the parent marker. See Bug 1544821.
+ // Also, because the request races with the cache, these 2 values are valid:
+ // "Missed" when the cache answered before we get a result from the network.
+ // "Unresolved" when we got a response from the network before the cache subsystem.
+ cache: Expect.stringMatches(/^(Missed|Unresolved)$/),
+ });
+
+ Assert.objectContains(
+ contentFirstStopMarker,
+ expectedPropertiesForStopMarker
+ );
+ Assert.objectContainsOnly(
+ contentFirstStopMarker.data,
+ expectedDataPropertiesForStopMarker
+ );
+
+ Assert.objectContains(
+ parentRedirectMarker,
+ expectedPropertiesForRedirectMarker
+ );
+ Assert.objectContainsOnly(parentRedirectMarker.data, {
+ ...expectedDataPropertiesForRedirectMarker,
+ redirectId: parentSecondStopMarker.data.id,
+ // See above for the full explanation about the cache property.
+ cache: Expect.stringMatches(/^(Missed|Unresolved)$/),
+ });
+
+ Assert.objectContains(
+ contentRedirectMarker,
+ expectedPropertiesForRedirectMarker
+ );
+ Assert.objectContainsOnly(contentRedirectMarker.data, {
+ ...expectedDataPropertiesForRedirectMarker,
+ redirectId: contentSecondStopMarker.data.id,
+ });
+
+ Assert.objectContains(
+ parentSecondStopMarker,
+ expectedPropertiesForStopMarker
+ );
+ Assert.objectContainsOnly(parentSecondStopMarker.data, {
+ ...expectedDataPropertiesForStopMarker,
+ // The "count" property is absent from the content marker.
+ count: Expect.number(),
+ // See above for the full explanation about the cache property.
+ cache: Expect.stringMatches(/^(Missed|Unresolved)$/),
+ });
+
+ Assert.objectContains(
+ contentSecondStopMarker,
+ expectedPropertiesForStopMarker
+ );
+ Assert.objectContainsOnly(
+ contentSecondStopMarker.data,
+ expectedDataPropertiesForStopMarker
+ );
+ });
+});
diff --git a/tools/profiler/tests/browser/browser_test_marker_network_serviceworker_cache_first.js b/tools/profiler/tests/browser/browser_test_marker_network_serviceworker_cache_first.js
new file mode 100644
index 0000000000..c1ad49b262
--- /dev/null
+++ b/tools/profiler/tests/browser/browser_test_marker_network_serviceworker_cache_first.js
@@ -0,0 +1,378 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+/**
+ * Test that we emit network markers accordingly.
+ * In this file we'll test a caching service worker. This service worker will
+ * fetch and store requests at install time, and serve them when the page
+ * requests them.
+ */
+
+const serviceWorkerFileName = "serviceworker_cache_first.js";
+registerCleanupFunction(() => SpecialPowers.removeAllServiceWorkerData());
+
+add_task(async function test_network_markers_service_worker_setup() {
+ // Disabling cache makes the result more predictable. Also this makes things
+ // simpler when dealing with service workers.
+ await SpecialPowers.pushPrefEnv({
+ set: [
+ ["browser.cache.disk.enable", false],
+ ["browser.cache.memory.enable", false],
+ ],
+ });
+});
+
+add_task(async function test_network_markers_service_worker_register() {
+ // In this first step, we request an HTML page that will register a service
+ // worker. We'll wait until the service worker is fully installed before
+ // checking various things.
+ Assert.ok(
+ !Services.profiler.IsActive(),
+ "The profiler is not currently active"
+ );
+
+ startProfilerForMarkerTests();
+
+ const url = `${BASE_URL_HTTPS}serviceworkers/serviceworker_register.html`;
+ await BrowserTestUtils.withNewTab(url, async contentBrowser => {
+ const contentPid = await SpecialPowers.spawn(
+ contentBrowser,
+ [],
+ () => Services.appinfo.processID
+ );
+
+ await SpecialPowers.spawn(
+ contentBrowser,
+ [serviceWorkerFileName],
+ async function (serviceWorkerFileName) {
+ await content.wrappedJSObject.registerServiceWorkerAndWait(
+ serviceWorkerFileName
+ );
+ }
+ );
+
+ const { parentThread, contentThread, profile } =
+ await stopProfilerNowAndGetThreads(contentPid);
+
+ // The service worker work happens in a third "thread" or process, let's try
+ // to find it.
+ // Currently the fetches happen on the main thread for the content process,
+ // this may change in the future and we may have to adapt this function.
+ // Also please note this isn't necessarily the same content process as the
+ // ones for the tab.
+ const { serviceWorkerParentThread } = findServiceWorkerThreads(profile);
+
+ // Here are a few sanity checks.
+ ok(
+ serviceWorkerParentThread,
+ "We should find a thread for the service worker."
+ );
+
+ Assert.notEqual(
+ serviceWorkerParentThread.pid,
+ parentThread.pid,
+ "We should have a different pid than the parent thread."
+ );
+ Assert.notEqual(
+ serviceWorkerParentThread.tid,
+ parentThread.tid,
+ "We should have a different tid than the parent thread."
+ );
+
+ // Let's make sure we actually have a registered service workers.
+ const workers = await SpecialPowers.registeredServiceWorkers();
+ Assert.equal(
+ workers.length,
+ 1,
+ "One service worker should be properly registered."
+ );
+
+ // By logging a few information about the threads we make debugging easier.
+ logInformationForThread("parentThread information", parentThread);
+ logInformationForThread("contentThread information", contentThread);
+ logInformationForThread(
+ "serviceWorkerParentThread information",
+ serviceWorkerParentThread
+ );
+
+ // Now let's check the marker payloads.
+ const parentNetworkMarkers = getInflatedNetworkMarkers(parentThread)
+ // When we load a page, Firefox will check the service worker freshness
+ // after a few seconds. So when the test lasts a long time (with some test
+ // environments) we might see spurious markers about that that we're not
+ // interesting in in this part of the test. They're only present in the
+ // parent process.
+ .filter(marker => !marker.data.URI.includes(serviceWorkerFileName));
+ const contentNetworkMarkers = getInflatedNetworkMarkers(contentThread);
+ const serviceWorkerNetworkMarkers = getInflatedNetworkMarkers(
+ serviceWorkerParentThread
+ );
+
+ // Some more logs for debugging purposes.
+ info(
+ "Parent network markers: " + JSON.stringify(parentNetworkMarkers, null, 2)
+ );
+ info(
+ "Content network markers: " +
+ JSON.stringify(contentNetworkMarkers, null, 2)
+ );
+ info(
+ "Serviceworker network markers: " +
+ JSON.stringify(serviceWorkerNetworkMarkers, null, 2)
+ );
+
+ const parentPairs = getPairsOfNetworkMarkers(parentNetworkMarkers);
+ const contentPairs = getPairsOfNetworkMarkers(contentNetworkMarkers);
+ const serviceWorkerPairs = getPairsOfNetworkMarkers(
+ serviceWorkerNetworkMarkers
+ );
+
+ // First, make sure we properly matched all start with stop markers. This
+ // means that both arrays should contain only arrays of 2 elements.
+ parentPairs.forEach(pair =>
+ Assert.equal(
+ pair.length,
+ 2,
+ `For the URL ${pair[0].data.URI} we should get 2 markers in the parent process.`
+ )
+ );
+ contentPairs.forEach(pair =>
+ Assert.equal(
+ pair.length,
+ 2,
+ `For the URL ${pair[0].data.URI} we should get 2 markers in the content process.`
+ )
+ );
+ serviceWorkerPairs.forEach(pair =>
+ Assert.equal(
+ pair.length,
+ 2,
+ `For the URL ${pair[0].data.URI} we should get 2 markers in the service worker process.`
+ )
+ );
+
+ // Let's look at all pairs and make sure we requested all expected files.
+ const parentStopMarkers = parentPairs.map(([_, stopMarker]) => stopMarker);
+
+ // These are the files cached by the service worker. We should see markers
+ // for both the parent thread and the service worker thread.
+ const expectedFiles = [
+ "serviceworker_page.html",
+ "firefox-logo-nightly.svg",
+ ].map(filename => `${BASE_URL_HTTPS}serviceworkers/${filename}`);
+
+ for (const expectedFile of expectedFiles) {
+ info(
+ `Checking if "${expectedFile}" is present in the network markers in both processes.`
+ );
+ const parentMarker = parentStopMarkers.find(
+ marker => marker.data.URI === expectedFile
+ );
+
+ const expectedProperties = {
+ name: Expect.stringMatches(
+ `Load \\d+:.*${escapeStringRegexp(expectedFile)}`
+ ),
+ data: Expect.objectContains({
+ status: "STATUS_STOP",
+ URI: expectedFile,
+ requestMethod: "GET",
+ contentType: Expect.stringMatches(/^(text\/html|image\/svg\+xml)$/),
+ startTime: Expect.number(),
+ endTime: Expect.number(),
+ domainLookupStart: Expect.number(),
+ domainLookupEnd: Expect.number(),
+ connectStart: Expect.number(),
+ tcpConnectEnd: Expect.number(),
+ connectEnd: Expect.number(),
+ requestStart: Expect.number(),
+ responseStart: Expect.number(),
+ responseEnd: Expect.number(),
+ id: Expect.number(),
+ count: Expect.number(),
+ pri: Expect.number(),
+ }),
+ };
+
+ Assert.objectContains(parentMarker, expectedProperties);
+ }
+ });
+});
+
+add_task(async function test_network_markers_service_worker_use() {
+ // In this test we request an HTML file that itself contains resources that
+ // are redirected.
+ Assert.ok(
+ !Services.profiler.IsActive(),
+ "The profiler is not currently active"
+ );
+
+ startProfilerForMarkerTests();
+
+ const url = `${BASE_URL_HTTPS}serviceworkers/serviceworker_page.html`;
+ await BrowserTestUtils.withNewTab(url, async contentBrowser => {
+ const contentPid = await SpecialPowers.spawn(
+ contentBrowser,
+ [],
+ () => Services.appinfo.processID
+ );
+
+ const { parentThread, contentThread } = await stopProfilerNowAndGetThreads(
+ contentPid
+ );
+
+ // By logging a few information about the threads we make debugging easier.
+ logInformationForThread("parentThread information", parentThread);
+ logInformationForThread("contentThread information", contentThread);
+
+ const parentNetworkMarkers = getInflatedNetworkMarkers(parentThread)
+ // When we load a page, Firefox will check the service worker freshness
+ // after a few seconds. So when the test lasts a long time (with some test
+ // environments) we might see spurious markers about that that we're not
+ // interesting in in this part of the test. They're only present in the
+ // parent process.
+ .filter(marker => !marker.data.URI.includes(serviceWorkerFileName));
+ const contentNetworkMarkers = getInflatedNetworkMarkers(contentThread);
+
+ // Here are some logs to ease debugging.
+ info(
+ "Parent network markers: " + JSON.stringify(parentNetworkMarkers, null, 2)
+ );
+ info(
+ "Content network markers: " +
+ JSON.stringify(contentNetworkMarkers, null, 2)
+ );
+
+ const parentPairs = getPairsOfNetworkMarkers(parentNetworkMarkers);
+ const contentPairs = getPairsOfNetworkMarkers(contentNetworkMarkers);
+
+ // These are the files cached by the service worker. We should see markers
+ // for the parent thread and the content thread.
+ const expectedFiles = [
+ "serviceworker_page.html",
+ "firefox-logo-nightly.svg",
+ ].map(filename => `${BASE_URL_HTTPS}serviceworkers/${filename}`);
+
+ // First, make sure we properly matched all start with stop markers. This
+ // means that both arrays should contain only arrays of 2 elements.
+ parentPairs.forEach(pair =>
+ Assert.equal(
+ pair.length,
+ 2,
+ `For the URL ${pair[0].data.URI} we should get 2 markers in the parent process.`
+ )
+ );
+
+ contentPairs.forEach(pair =>
+ Assert.equal(
+ pair.length,
+ 2,
+ `For the URL ${pair[0].data.URI} we should get 2 markers in the content process.`
+ )
+ );
+
+ // Let's look at all pairs and make sure we requested all expected files.
+ const parentEndMarkers = parentPairs.map(([_, endMarker]) => endMarker);
+ const contentStopMarkers = contentPairs.map(
+ ([_, stopMarker]) => stopMarker
+ );
+
+ Assert.equal(
+ parentEndMarkers.length,
+ expectedFiles.length * 2, // one redirect + one stop
+ "There should be twice as many end markers in the parent process as requested files."
+ );
+ Assert.equal(
+ contentStopMarkers.length,
+ expectedFiles.length,
+ "There should be as many stop markers in the content process as requested files."
+ );
+
+ for (const [i, expectedFile] of expectedFiles.entries()) {
+ info(
+ `Checking if "${expectedFile}" if present in the network markers in both processes.`
+ );
+ const [parentRedirectMarker, parentStopMarker] = parentEndMarkers.filter(
+ marker => marker.data.URI === expectedFile
+ );
+ const contentMarker = contentStopMarkers.find(
+ marker => marker.data.URI === expectedFile
+ );
+
+ const commonDataProperties = {
+ type: "Network",
+ URI: expectedFile,
+ requestMethod: "GET",
+ contentType: Expect.stringMatches(/^(text\/html|image\/svg\+xml)$/),
+ startTime: Expect.number(),
+ endTime: Expect.number(),
+ id: Expect.number(),
+ pri: Expect.number(),
+ };
+
+ const expectedProperties = {
+ name: Expect.stringMatches(
+ `Load \\d+:.*${escapeStringRegexp(expectedFile)}`
+ ),
+ };
+
+ Assert.objectContains(parentRedirectMarker, expectedProperties);
+ Assert.objectContains(parentStopMarker, expectedProperties);
+ Assert.objectContains(contentMarker, expectedProperties);
+ if (i === 0) {
+ // This is the top level navigation, the HTML file.
+ Assert.objectContainsOnly(parentRedirectMarker.data, {
+ ...commonDataProperties,
+ status: "STATUS_REDIRECT",
+ contentType: null,
+ cache: "Unresolved",
+ RedirectURI: expectedFile,
+ redirectType: "Internal",
+ redirectId: parentStopMarker.data.id,
+ isHttpToHttpsRedirect: false,
+ });
+
+ Assert.objectContainsOnly(parentStopMarker.data, {
+ ...commonDataProperties,
+ status: "STATUS_STOP",
+ });
+
+ Assert.objectContainsOnly(contentMarker.data, {
+ ...commonDataProperties,
+ status: "STATUS_STOP",
+ });
+ } else {
+ Assert.objectContainsOnly(parentRedirectMarker.data, {
+ ...commonDataProperties,
+ status: "STATUS_REDIRECT",
+ contentType: null,
+ cache: "Unresolved",
+ innerWindowID: Expect.number(),
+ RedirectURI: expectedFile,
+ redirectType: "Internal",
+ redirectId: parentStopMarker.data.id,
+ isHttpToHttpsRedirect: false,
+ });
+
+ Assert.objectContainsOnly(
+ parentStopMarker.data,
+ // Note: in the future we may have more properties. We're using the
+ // "Only" flavor of the matcher so that we don't forget to update this
+ // test when this changes.
+ {
+ ...commonDataProperties,
+ innerWindowID: Expect.number(),
+ status: "STATUS_STOP",
+ }
+ );
+
+ Assert.objectContainsOnly(contentMarker.data, {
+ ...commonDataProperties,
+ innerWindowID: Expect.number(),
+ status: "STATUS_STOP",
+ });
+ }
+ }
+ });
+});
diff --git a/tools/profiler/tests/browser/browser_test_marker_network_serviceworker_no_fetch_handler.js b/tools/profiler/tests/browser/browser_test_marker_network_serviceworker_no_fetch_handler.js
new file mode 100644
index 0000000000..ad2cc81661
--- /dev/null
+++ b/tools/profiler/tests/browser/browser_test_marker_network_serviceworker_no_fetch_handler.js
@@ -0,0 +1,218 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+/**
+ * Test that we emit network markers accordingly.
+ * In this file we'll test the case of a service worker that has no fetch
+ * handlers. In this case, a fetch is done to the network. There may be
+ * shortcuts in our code in this case, that's why it's important to test it
+ * separately.
+ */
+
+const serviceWorkerFileName = "serviceworker_no_fetch_handler.js";
+registerCleanupFunction(() => SpecialPowers.removeAllServiceWorkerData());
+
+add_task(async function test_network_markers_service_worker_setup() {
+ // Disabling cache makes the result more predictable. Also this makes things
+ // simpler when dealing with service workers.
+ await SpecialPowers.pushPrefEnv({
+ set: [
+ ["browser.cache.disk.enable", false],
+ ["browser.cache.memory.enable", false],
+ ],
+ });
+});
+
+add_task(async function test_network_markers_service_worker_register() {
+ // In this first step, we request an HTML page that will register a service
+ // worker. We'll wait until the service worker is fully installed before
+ // checking various things.
+ const url = `${BASE_URL_HTTPS}serviceworkers/serviceworker_register.html`;
+ await BrowserTestUtils.withNewTab(url, async contentBrowser => {
+ await SpecialPowers.spawn(
+ contentBrowser,
+ [serviceWorkerFileName],
+ async function (serviceWorkerFileName) {
+ await content.wrappedJSObject.registerServiceWorkerAndWait(
+ serviceWorkerFileName
+ );
+ }
+ );
+
+ // Let's make sure we actually have a registered service workers.
+ const workers = await SpecialPowers.registeredServiceWorkers();
+ Assert.equal(
+ workers.length,
+ 1,
+ "One service worker should be properly registered."
+ );
+ });
+});
+
+add_task(async function test_network_markers_service_worker_use() {
+ Assert.ok(
+ !Services.profiler.IsActive(),
+ "The profiler is not currently active"
+ );
+
+ startProfilerForMarkerTests();
+
+ const url = `${BASE_URL_HTTPS}serviceworkers/serviceworker_page.html`;
+ await BrowserTestUtils.withNewTab(url, async contentBrowser => {
+ const contentPid = await SpecialPowers.spawn(
+ contentBrowser,
+ [],
+ () => Services.appinfo.processID
+ );
+
+ const { parentThread, contentThread } = await stopProfilerNowAndGetThreads(
+ contentPid
+ );
+
+ // By logging a few information about the threads we make debugging easier.
+ logInformationForThread("parentThread information", parentThread);
+ logInformationForThread("contentThread information", contentThread);
+
+ const parentNetworkMarkers = getInflatedNetworkMarkers(parentThread)
+ // When we load a page, Firefox will check the service worker freshness
+ // after a few seconds. So when the test lasts a long time (with some test
+ // environments) we might see spurious markers about that that we're not
+ // interesting in in this part of the test. They're only present in the
+ // parent process.
+ .filter(marker => !marker.data.URI.includes(serviceWorkerFileName));
+ const contentNetworkMarkers = getInflatedNetworkMarkers(contentThread);
+
+ // Here are some logs to ease debugging.
+ info(
+ "Parent network markers:" + JSON.stringify(parentNetworkMarkers, null, 2)
+ );
+ info(
+ "Content network markers:" +
+ JSON.stringify(contentNetworkMarkers, null, 2)
+ );
+
+ const parentPairs = getPairsOfNetworkMarkers(parentNetworkMarkers);
+ const contentPairs = getPairsOfNetworkMarkers(contentNetworkMarkers);
+
+ // First, make sure we properly matched all start with stop markers. This
+ // means that both arrays should contain only arrays of 2 elements.
+ parentPairs.forEach(pair =>
+ Assert.equal(
+ pair.length,
+ 2,
+ `For the URL ${pair[0].data.URI} we should get 2 markers in the parent process.`
+ )
+ );
+
+ contentPairs.forEach(pair =>
+ Assert.equal(
+ pair.length,
+ 2,
+ `For the URL ${pair[0].data.URI} we should get 2 markers in the content process.`
+ )
+ );
+
+ // Let's look at all pairs and make sure we requested all expected files.
+ const parentStopMarkers = parentPairs.map(([_, stopMarker]) => stopMarker);
+ const contentStopMarkers = contentPairs.map(
+ ([_, stopMarker]) => stopMarker
+ );
+
+ // These are the files requested by the page.
+ // We should see markers for the parent thread and the content thread.
+ const expectedFiles = [
+ // Please take care that the first element is the top level navigation, as
+ // this is special-cased below.
+ "serviceworker_page.html",
+ "firefox-logo-nightly.svg",
+ ].map(filename => `${BASE_URL_HTTPS}serviceworkers/${filename}`);
+
+ Assert.equal(
+ parentStopMarkers.length,
+ expectedFiles.length,
+ "There should be as many stop markers in the parent process as requested files."
+ );
+ Assert.equal(
+ contentStopMarkers.length,
+ expectedFiles.length,
+ "There should be as many stop markers in the content process as requested files."
+ );
+
+ for (const [i, expectedFile] of expectedFiles.entries()) {
+ info(
+ `Checking if "${expectedFile}" if present in the network markers in both processes.`
+ );
+ const parentMarker = parentStopMarkers.find(
+ marker => marker.data.URI === expectedFile
+ );
+ const contentMarker = contentStopMarkers.find(
+ marker => marker.data.URI === expectedFile
+ );
+
+ const commonProperties = {
+ name: Expect.stringMatches(
+ `Load \\d+:.*${escapeStringRegexp(expectedFile)}`
+ ),
+ };
+ Assert.objectContains(parentMarker, commonProperties);
+ Assert.objectContains(contentMarker, commonProperties);
+
+ // We get the full set of properties in this case, because we do an actual
+ // fetch to the network.
+ const commonDataProperties = {
+ type: "Network",
+ status: "STATUS_STOP",
+ URI: expectedFile,
+ requestMethod: "GET",
+ contentType: Expect.stringMatches(/^(text\/html|image\/svg\+xml)$/),
+ startTime: Expect.number(),
+ endTime: Expect.number(),
+ id: Expect.number(),
+ pri: Expect.number(),
+ count: Expect.number(),
+ domainLookupStart: Expect.number(),
+ domainLookupEnd: Expect.number(),
+ connectStart: Expect.number(),
+ tcpConnectEnd: Expect.number(),
+ connectEnd: Expect.number(),
+ requestStart: Expect.number(),
+ responseStart: Expect.number(),
+ responseEnd: Expect.number(),
+ };
+
+ if (i === 0) {
+ // The first marker is special cased: this is the top level navigation
+ // serviceworker_page.html,
+ // and in this case we don't have all the same properties. Especially
+ // the innerWindowID information is missing.
+ Assert.objectContainsOnly(parentMarker.data, {
+ ...commonDataProperties,
+ // Note that the parent process has the "cache" information, but not the content
+ // process. See Bug 1544821.
+ // Also because the request races with the cache, these 2 values are valid:
+ // "Missed" when the cache answered before we get a result from the network.
+ // "Unresolved" when we got a response from the network before the cache subsystem.
+ cache: Expect.stringMatches(/^(Missed|Unresolved)$/),
+ });
+
+ Assert.objectContainsOnly(contentMarker.data, commonDataProperties);
+ } else {
+ // This is the other file firefox-logo-nightly.svg.
+ Assert.objectContainsOnly(parentMarker.data, {
+ ...commonDataProperties,
+ // Because the request races with the cache, these 2 values are valid:
+ // "Missed" when the cache answered before we get a result from the network.
+ // "Unresolved" when we got a response from the network before the cache subsystem.
+ cache: Expect.stringMatches(/^(Missed|Unresolved)$/),
+ innerWindowID: Expect.number(),
+ });
+
+ Assert.objectContainsOnly(contentMarker.data, {
+ ...commonDataProperties,
+ innerWindowID: Expect.number(),
+ });
+ }
+ }
+ });
+});
diff --git a/tools/profiler/tests/browser/browser_test_marker_network_serviceworker_no_respondWith_in_fetch_handler.js b/tools/profiler/tests/browser/browser_test_marker_network_serviceworker_no_respondWith_in_fetch_handler.js
new file mode 100644
index 0000000000..973ae61a7f
--- /dev/null
+++ b/tools/profiler/tests/browser/browser_test_marker_network_serviceworker_no_respondWith_in_fetch_handler.js
@@ -0,0 +1,294 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+/**
+ * Test that we emit network markers accordingly.
+ * In this file we'll test the case of a service worker that has a fetch
+ * handler, but no respondWith. In this case, some process called "reset
+ * interception" happens, and the fetch is still carried on by our code. Because
+ * this is a bit of an edge case, it's important to have a test for this case.
+ */
+
+const serviceWorkerFileName =
+ "serviceworker_no_respondWith_in_fetch_handler.js";
+registerCleanupFunction(() => SpecialPowers.removeAllServiceWorkerData());
+
+add_task(async function test_network_markers_service_worker_setup() {
+ // Disabling cache makes the result more predictable. Also this makes things
+ // simpler when dealing with service workers.
+ await SpecialPowers.pushPrefEnv({
+ set: [
+ ["browser.cache.disk.enable", false],
+ ["browser.cache.memory.enable", false],
+ ],
+ });
+});
+
+add_task(async function test_network_markers_service_worker_register() {
+ // In this first step, we request an HTML page that will register a service
+ // worker. We'll wait until the service worker is fully installed before
+ // checking various things.
+ const url = `${BASE_URL_HTTPS}serviceworkers/serviceworker_register.html`;
+ await BrowserTestUtils.withNewTab(url, async contentBrowser => {
+ await SpecialPowers.spawn(
+ contentBrowser,
+ [serviceWorkerFileName],
+ async function (serviceWorkerFileName) {
+ await content.wrappedJSObject.registerServiceWorkerAndWait(
+ serviceWorkerFileName
+ );
+ }
+ );
+
+ // Let's make sure we actually have a registered service workers.
+ const workers = await SpecialPowers.registeredServiceWorkers();
+ Assert.equal(
+ workers.length,
+ 1,
+ "One service worker should be properly registered."
+ );
+ });
+});
+
+add_task(async function test_network_markers_service_worker_use() {
+ Assert.ok(
+ !Services.profiler.IsActive(),
+ "The profiler is not currently active"
+ );
+
+ startProfilerForMarkerTests();
+
+ const url = `${BASE_URL_HTTPS}serviceworkers/serviceworker_page.html`;
+ await BrowserTestUtils.withNewTab(url, async contentBrowser => {
+ const contentPid = await SpecialPowers.spawn(
+ contentBrowser,
+ [],
+ () => Services.appinfo.processID
+ );
+
+ const { parentThread, contentThread } = await stopProfilerNowAndGetThreads(
+ contentPid
+ );
+
+ // By logging a few information about the threads we make debugging easier.
+ logInformationForThread("parentThread information", parentThread);
+ logInformationForThread("contentThread information", contentThread);
+
+ const parentNetworkMarkers = getInflatedNetworkMarkers(parentThread)
+ // When we load a page, Firefox will check the service worker freshness
+ // after a few seconds. So when the test lasts a long time (with some test
+ // environments) we might see spurious markers about that that we're not
+ // interesting in in this part of the test. They're only present in the
+ // parent process.
+ .filter(marker => !marker.data.URI.includes(serviceWorkerFileName));
+ const contentNetworkMarkers = getInflatedNetworkMarkers(contentThread);
+
+ // Here are some logs to ease debugging.
+ info(
+ "Parent network markers:" + JSON.stringify(parentNetworkMarkers, null, 2)
+ );
+ info(
+ "Content network markers:" +
+ JSON.stringify(contentNetworkMarkers, null, 2)
+ );
+
+ const parentPairs = getPairsOfNetworkMarkers(parentNetworkMarkers);
+ const contentPairs = getPairsOfNetworkMarkers(contentNetworkMarkers);
+
+ // First, make sure we properly matched all start with stop markers. This
+ // means that both arrays should contain only arrays of 2 elements.
+ parentPairs.forEach(pair =>
+ Assert.equal(
+ pair.length,
+ 2,
+ `For the URL ${pair[0].data.URI} we should get 2 markers in the parent process.`
+ )
+ );
+
+ contentPairs.forEach(pair =>
+ Assert.equal(
+ pair.length,
+ 2,
+ `For the URL ${pair[0].data.URI} we should get 2 markers in the content process.`
+ )
+ );
+
+ // Let's look at all pairs and make sure we requested all expected files.
+ // In this test, we should have redirect markers as well as stop markers,
+ // because this case generates internal redirects. We may want to change
+ // that in the future, or handle this specially in the frontend.
+ // Let's create various arrays to help assert.
+
+ const parentEndMarkers = parentPairs.map(([_, stopMarker]) => stopMarker);
+ const parentStopMarkers = parentEndMarkers.filter(
+ marker => marker.data.status === "STATUS_STOP"
+ );
+ const parentRedirectMarkers = parentEndMarkers.filter(
+ marker => marker.data.status === "STATUS_REDIRECT"
+ );
+ const contentEndMarkers = contentPairs.map(([_, stopMarker]) => stopMarker);
+ const contentStopMarkers = contentEndMarkers.filter(
+ marker => marker.data.status === "STATUS_STOP"
+ );
+ const contentRedirectMarkers = contentEndMarkers.filter(
+ marker => marker.data.status === "STATUS_REDIRECT"
+ );
+
+ // These are the files requested by the page.
+ // We should see markers for the parent thread and the content thread.
+ const expectedFiles = [
+ // Please take care that the first element is the top level navigation, as
+ // this is special-cased below.
+ "serviceworker_page.html",
+ "firefox-logo-nightly.svg",
+ ].map(filename => `${BASE_URL_HTTPS}serviceworkers/${filename}`);
+
+ Assert.equal(
+ parentStopMarkers.length,
+ expectedFiles.length,
+ "There should be as many stop markers in the parent process as requested files."
+ );
+ Assert.equal(
+ parentRedirectMarkers.length,
+ expectedFiles.length * 2, // http -> intercepted, intercepted -> http
+ "There should be twice as many redirect markers in the parent process as requested files."
+ );
+ Assert.equal(
+ contentStopMarkers.length,
+ expectedFiles.length,
+ "There should be as many stop markers in the content process as requested files."
+ );
+ // Note: there will no redirect markers in the content process for
+ // ServiceWorker fallbacks request to network.
+ // See Bug 1793940.
+ Assert.equal(
+ contentRedirectMarkers.length,
+ 0,
+ "There should be no redirect markers in the content process than requested files."
+ );
+
+ for (const [i, expectedFile] of expectedFiles.entries()) {
+ info(
+ `Checking if "${expectedFile}" if present in the network markers in both processes.`
+ );
+ const [parentRedirectMarkerIntercept, parentRedirectMarkerReset] =
+ parentRedirectMarkers.filter(
+ marker => marker.data.URI === expectedFile
+ );
+ const parentStopMarker = parentStopMarkers.find(
+ marker => marker.data.URI === expectedFile
+ );
+ const contentStopMarker = contentStopMarkers.find(
+ marker => marker.data.URI === expectedFile
+ );
+
+ const commonProperties = {
+ name: Expect.stringMatches(
+ `Load \\d+:.*${escapeStringRegexp(expectedFile)}`
+ ),
+ };
+ Assert.objectContains(parentRedirectMarkerIntercept, commonProperties);
+ Assert.objectContains(parentRedirectMarkerReset, commonProperties);
+ Assert.objectContains(parentStopMarker, commonProperties);
+ Assert.objectContains(contentStopMarker, commonProperties);
+ // Note: there's no check for the contentRedirectMarker, because there's
+ // no marker for a top level navigation redirect in the content process.
+
+ // We get the full set of properties in this case, because we do an actual
+ // fetch to the network.
+ const commonDataProperties = {
+ type: "Network",
+ status: "STATUS_STOP",
+ URI: expectedFile,
+ requestMethod: "GET",
+ contentType: Expect.stringMatches(/^(text\/html|image\/svg\+xml)$/),
+ startTime: Expect.number(),
+ endTime: Expect.number(),
+ id: Expect.number(),
+ pri: Expect.number(),
+ count: Expect.number(),
+ domainLookupStart: Expect.number(),
+ domainLookupEnd: Expect.number(),
+ connectStart: Expect.number(),
+ tcpConnectEnd: Expect.number(),
+ connectEnd: Expect.number(),
+ requestStart: Expect.number(),
+ responseStart: Expect.number(),
+ responseEnd: Expect.number(),
+ };
+
+ const commonRedirectProperties = {
+ type: "Network",
+ status: "STATUS_REDIRECT",
+ URI: expectedFile,
+ RedirectURI: expectedFile,
+ requestMethod: "GET",
+ contentType: null,
+ startTime: Expect.number(),
+ endTime: Expect.number(),
+ id: Expect.number(),
+ pri: Expect.number(),
+ redirectType: "Internal",
+ isHttpToHttpsRedirect: false,
+ };
+
+ if (i === 0) {
+ // The first marker is special cased: this is the top level navigation
+ // serviceworker_page.html,
+ // and in this case we don't have all the same properties. Especially
+ // the innerWindowID information is missing.
+ Assert.objectContainsOnly(parentStopMarker.data, {
+ ...commonDataProperties,
+ // Note that the parent process has the "cache" information, but not the content
+ // process. See Bug 1544821.
+ // Also, because the request races with the cache, these 2 values are valid:
+ // "Missed" when the cache answered before we get a result from the network.
+ // "Unresolved" when we got a response from the network before the cache subsystem.
+ cache: Expect.stringMatches(/^(Missed|Unresolved)$/),
+ });
+ Assert.objectContainsOnly(contentStopMarker.data, commonDataProperties);
+
+ Assert.objectContainsOnly(parentRedirectMarkerIntercept.data, {
+ ...commonRedirectProperties,
+ redirectId: parentRedirectMarkerReset.data.id,
+ cache: "Unresolved",
+ });
+ Assert.objectContainsOnly(parentRedirectMarkerReset.data, {
+ ...commonRedirectProperties,
+ redirectId: parentStopMarker.data.id,
+ });
+
+ // Note: there's no check for the contentRedirectMarker, because there's
+ // no marker for a top level navigation redirect in the content process.
+ } else {
+ // This is the other file firefox-logo-nightly.svg.
+ Assert.objectContainsOnly(parentStopMarker.data, {
+ ...commonDataProperties,
+ // Because the request races with the cache, these 2 values are valid:
+ // "Missed" when the cache answered before we get a result from the network.
+ // "Unresolved" when we got a response from the network before the cache subsystem.
+ cache: Expect.stringMatches(/^(Missed|Unresolved)$/),
+ innerWindowID: Expect.number(),
+ });
+ Assert.objectContains(contentStopMarker, commonProperties);
+ Assert.objectContainsOnly(contentStopMarker.data, {
+ ...commonDataProperties,
+ innerWindowID: Expect.number(),
+ });
+
+ Assert.objectContainsOnly(parentRedirectMarkerIntercept.data, {
+ ...commonRedirectProperties,
+ innerWindowID: Expect.number(),
+ redirectId: parentRedirectMarkerReset.data.id,
+ cache: "Unresolved",
+ });
+ Assert.objectContainsOnly(parentRedirectMarkerReset.data, {
+ ...commonRedirectProperties,
+ innerWindowID: Expect.number(),
+ redirectId: parentStopMarker.data.id,
+ });
+ }
+ }
+ });
+});
diff --git a/tools/profiler/tests/browser/browser_test_marker_network_serviceworker_synthetized_response.js b/tools/profiler/tests/browser/browser_test_marker_network_serviceworker_synthetized_response.js
new file mode 100644
index 0000000000..060592840a
--- /dev/null
+++ b/tools/profiler/tests/browser/browser_test_marker_network_serviceworker_synthetized_response.js
@@ -0,0 +1,480 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+/**
+ * Test that we emit network markers accordingly.
+ * In this file we'll test a service worker that returns a synthetized response.
+ * This means the service worker will make up a response by itself.
+ */
+
+const serviceWorkerFileName = "serviceworker_synthetized_response.js";
+registerCleanupFunction(() => SpecialPowers.removeAllServiceWorkerData());
+
+add_task(async function test_network_markers_service_worker_setup() {
+ // Disabling cache makes the result more predictable. Also this makes things
+ // simpler when dealing with service workers.
+ await SpecialPowers.pushPrefEnv({
+ set: [
+ ["browser.cache.disk.enable", false],
+ ["browser.cache.memory.enable", false],
+ ],
+ });
+});
+
+add_task(async function test_network_markers_service_worker_register() {
+ // In this first step, we request an HTML page that will register a service
+ // worker. We'll wait until the service worker is fully installed before
+ // checking various things.
+ Assert.ok(
+ !Services.profiler.IsActive(),
+ "The profiler is not currently active"
+ );
+
+ const url = `${BASE_URL_HTTPS}serviceworkers/serviceworker_register.html`;
+ await BrowserTestUtils.withNewTab(url, async contentBrowser => {
+ await SpecialPowers.spawn(
+ contentBrowser,
+ [serviceWorkerFileName],
+ async function (serviceWorkerFileName) {
+ await content.wrappedJSObject.registerServiceWorkerAndWait(
+ serviceWorkerFileName
+ );
+ }
+ );
+
+ // Let's make sure we actually have a registered service workers.
+ const workers = await SpecialPowers.registeredServiceWorkers();
+ Assert.equal(
+ workers.length,
+ 1,
+ "One service worker should be properly registered."
+ );
+ });
+});
+
+add_task(async function test_network_markers_service_worker_use() {
+ // In this test, we'll first load a plain html file, then do some fetch
+ // requests in the context of the page. One request is served with a
+ // synthetized response, the other request is served with a real "fetch" done
+ // by the service worker.
+ Assert.ok(
+ !Services.profiler.IsActive(),
+ "The profiler is not currently active"
+ );
+
+ startProfilerForMarkerTests();
+
+ const url = `${BASE_URL_HTTPS}serviceworkers/serviceworker_simple.html`;
+ await BrowserTestUtils.withNewTab(url, async contentBrowser => {
+ const contentPid = await SpecialPowers.spawn(
+ contentBrowser,
+ [],
+ () => Services.appinfo.processID
+ );
+
+ await SpecialPowers.spawn(contentBrowser, [], async () => {
+ // This request is served directly by the service worker as a synthetized response.
+ await content
+ .fetch("firefox-generated.svg")
+ .then(res => res.arrayBuffer());
+
+ // This request is served by a fetch done inside the service worker.
+ await content
+ .fetch("firefox-logo-nightly.svg")
+ .then(res => res.arrayBuffer());
+ });
+
+ const { parentThread, contentThread, profile } =
+ await stopProfilerNowAndGetThreads(contentPid);
+
+ // The service worker work happens in a third "thread" or process, let's try
+ // to find it.
+ // Currently the fetches happen on the main thread for the content process,
+ // this may change in the future and we may have to adapt this function.
+ // Also please note this isn't necessarily the same content process as the
+ // ones for the tab.
+ const { serviceWorkerParentThread } = findServiceWorkerThreads(profile);
+
+ ok(
+ serviceWorkerParentThread,
+ "We should find a thread for the service worker."
+ );
+
+ // By logging a few information about the threads we make debugging easier.
+ logInformationForThread("parentThread information", parentThread);
+ logInformationForThread("contentThread information", contentThread);
+ logInformationForThread(
+ "serviceWorkerParentThread information",
+ serviceWorkerParentThread
+ );
+
+ const parentNetworkMarkers = getInflatedNetworkMarkers(parentThread)
+ // When we load a page, Firefox will check the service worker freshness
+ // after a few seconds. So when the test lasts a long time (with some test
+ // environments) we might see spurious markers about that that we're not
+ // interesting in in this part of the test. They're only present in the
+ // parent process.
+ .filter(marker => !marker.data.URI.includes(serviceWorkerFileName));
+
+ const contentNetworkMarkers = getInflatedNetworkMarkers(contentThread);
+ const serviceWorkerNetworkMarkers = getInflatedNetworkMarkers(
+ serviceWorkerParentThread
+ );
+
+ // Some more logs for debugging purposes.
+ info(
+ "Parent network markers: " + JSON.stringify(parentNetworkMarkers, null, 2)
+ );
+ info(
+ "Content network markers: " +
+ JSON.stringify(contentNetworkMarkers, null, 2)
+ );
+ info(
+ "Serviceworker network markers: " +
+ JSON.stringify(serviceWorkerNetworkMarkers, null, 2)
+ );
+
+ const parentPairs = getPairsOfNetworkMarkers(parentNetworkMarkers);
+ const contentPairs = getPairsOfNetworkMarkers(contentNetworkMarkers);
+ const serviceWorkerPairs = getPairsOfNetworkMarkers(
+ serviceWorkerNetworkMarkers
+ );
+
+ // First, make sure we properly matched all start with stop markers. This
+ // means that both arrays should contain only arrays of 2 elements.
+ parentPairs.forEach(pair =>
+ Assert.equal(
+ pair.length,
+ 2,
+ `For the URL ${pair[0].data.URI} we should get 2 markers in the parent process.`
+ )
+ );
+
+ contentPairs.forEach(pair =>
+ Assert.equal(
+ pair.length,
+ 2,
+ `For the URL ${pair[0].data.URI} we should get 2 markers in the content process.`
+ )
+ );
+ serviceWorkerPairs.forEach(pair =>
+ Assert.equal(
+ pair.length,
+ 2,
+ `For the URL ${pair[0].data.URI} we should get 2 markers in the service worker process.`
+ )
+ );
+
+ // Let's look at all pairs and make sure we requested all expected files.
+ // In this test, we should have redirect markers as well as stop markers,
+ // because this case generates internal redirects.
+ // Let's create various arrays to help assert.
+
+ let parentStopMarkers = parentPairs.map(([_, stopMarker]) => stopMarker);
+ const contentStopMarkers = contentPairs.map(
+ ([_, stopMarker]) => stopMarker
+ );
+ // In this test we have very different results in the various threads, so
+ // we'll assert every case separately.
+ // A simple function to help constructing better assertions:
+ const fullUrl = filename => `${BASE_URL_HTTPS}serviceworkers/${filename}`;
+
+ {
+ // In the parent process, we have 8 network markers:
+ // - twice the html file -- because it's not cached by the SW, we get the
+ // marker both for the initial request and for the request initied from the
+ // SW.
+ // - twice the firefox svg file -- similar situation
+ // - once the generated svg file -- this one isn't fetched by the SW but
+ // rather forged directly, so there's no "second fetch", and thus we have
+ // only one marker.
+ // - for each of these files, we have first an internal redirect from the
+ // main channel to the service worker. => 3 redirect markers more.
+ Assert.equal(
+ parentStopMarkers.length,
+ 8, // 3 html files, 3 firefox svg files, 2 generated svg file
+ "There should be 8 stop markers in the parent process."
+ );
+
+ // The "1" requests are the initial requests that are intercepted, coming
+ // from the web page, while the "2" requests are requests to the network,
+ // coming from the service worker. The 1 were requested before 2, 2 ends
+ // before 1.
+ // "Intercept" requests are the internal redirects from the main channel
+ // to the service worker. They happen before others.
+ const [
+ htmlFetchIntercept,
+ htmlFetch1,
+ htmlFetch2,
+ generatedSvgIntercept,
+ generatedSvgFetch,
+ firefoxSvgIntercept,
+ firefoxSvgFetch1,
+ firefoxSvgFetch2,
+ ] = parentStopMarkers;
+
+ /* ----- /HTML FILE ---- */
+ Assert.objectContains(htmlFetchIntercept, {
+ name: Expect.stringMatches(/Load \d+:.*serviceworker_simple.html/),
+ data: Expect.objectContainsOnly({
+ type: "Network",
+ status: "STATUS_REDIRECT",
+ URI: fullUrl("serviceworker_simple.html"),
+ requestMethod: "GET",
+ contentType: null,
+ startTime: Expect.number(),
+ endTime: Expect.number(),
+ id: Expect.number(),
+ pri: Expect.number(),
+ redirectId: htmlFetch1.data.id,
+ redirectType: "Internal",
+ isHttpToHttpsRedirect: false,
+ RedirectURI: fullUrl("serviceworker_simple.html"),
+ cache: "Unresolved",
+ }),
+ });
+
+ Assert.objectContains(htmlFetch1, {
+ name: Expect.stringMatches(/Load \d+:.*serviceworker_simple.html/),
+ data: Expect.objectContainsOnly({
+ type: "Network",
+ status: "STATUS_STOP",
+ URI: fullUrl("serviceworker_simple.html"),
+ requestMethod: "GET",
+ contentType: "text/html",
+ startTime: Expect.number(),
+ endTime: Expect.number(),
+ id: Expect.number(),
+ pri: Expect.number(),
+ }),
+ });
+ Assert.objectContains(htmlFetch2, {
+ name: Expect.stringMatches(/Load \d+:.*serviceworker_simple.html/),
+ data: Expect.objectContainsOnly({
+ type: "Network",
+ status: "STATUS_STOP",
+ URI: fullUrl("serviceworker_simple.html"),
+ requestMethod: "GET",
+ contentType: "text/html",
+ // Because the request races with the cache, these 2 values are valid:
+ // "Missed" when the cache answered before we get a result from the network.
+ // "Unresolved" when we got a response from the network before the cache subsystem.
+ cache: Expect.stringMatches(/^(Missed|Unresolved)$/),
+ startTime: Expect.number(),
+ endTime: Expect.number(),
+ domainLookupStart: Expect.number(),
+ domainLookupEnd: Expect.number(),
+ connectStart: Expect.number(),
+ tcpConnectEnd: Expect.number(),
+ connectEnd: Expect.number(),
+ requestStart: Expect.number(),
+ responseStart: Expect.number(),
+ responseEnd: Expect.number(),
+ id: Expect.number(),
+ count: Expect.number(),
+ pri: Expect.number(),
+ }),
+ });
+ /* ----- /HTML FILE ---- */
+
+ /* ----- GENERATED SVG FILE ---- */
+ Assert.objectContains(generatedSvgIntercept, {
+ name: Expect.stringMatches(/Load \d+:.*firefox-generated.svg/),
+ data: Expect.objectContainsOnly({
+ type: "Network",
+ status: "STATUS_REDIRECT",
+ URI: fullUrl("firefox-generated.svg"),
+ requestMethod: "GET",
+ contentType: null,
+ startTime: Expect.number(),
+ endTime: Expect.number(),
+ id: Expect.number(),
+ pri: Expect.number(),
+ redirectId: generatedSvgFetch.data.id,
+ redirectType: "Internal",
+ isHttpToHttpsRedirect: false,
+ RedirectURI: fullUrl("firefox-generated.svg"),
+ cache: "Unresolved",
+ innerWindowID: Expect.number(),
+ }),
+ });
+ Assert.objectContains(generatedSvgFetch, {
+ name: Expect.stringMatches(/Load \d+:.*firefox-generated.svg/),
+ data: Expect.objectContainsOnly({
+ type: "Network",
+ status: "STATUS_STOP",
+ URI: fullUrl("firefox-generated.svg"),
+ requestMethod: "GET",
+ contentType: "image/svg+xml",
+ startTime: Expect.number(),
+ endTime: Expect.number(),
+ id: Expect.number(),
+ pri: Expect.number(),
+ innerWindowID: Expect.number(),
+ }),
+ });
+ /* ----- ∕GENERATED SVG FILE ---- */
+ /* ----- REQUESTED SVG FILE ---- */
+ Assert.objectContains(firefoxSvgIntercept, {
+ name: Expect.stringMatches(/Load \d+:.*firefox-logo-nightly.svg/),
+ data: Expect.objectContainsOnly({
+ type: "Network",
+ status: "STATUS_REDIRECT",
+ URI: fullUrl("firefox-logo-nightly.svg"),
+ requestMethod: "GET",
+ contentType: null,
+ startTime: Expect.number(),
+ endTime: Expect.number(),
+ id: Expect.number(),
+ pri: Expect.number(),
+ redirectId: firefoxSvgFetch1.data.id,
+ redirectType: "Internal",
+ isHttpToHttpsRedirect: false,
+ RedirectURI: fullUrl("firefox-logo-nightly.svg"),
+ cache: "Unresolved",
+ innerWindowID: Expect.number(),
+ }),
+ });
+ Assert.objectContains(firefoxSvgFetch1, {
+ name: Expect.stringMatches(/Load \d+:.*firefox-logo-nightly.svg/),
+ data: Expect.objectContainsOnly({
+ type: "Network",
+ status: "STATUS_STOP",
+ URI: fullUrl("firefox-logo-nightly.svg"),
+ requestMethod: "GET",
+ contentType: "image/svg+xml",
+ startTime: Expect.number(),
+ endTime: Expect.number(),
+ id: Expect.number(),
+ pri: Expect.number(),
+ innerWindowID: Expect.number(),
+ }),
+ });
+ Assert.objectContains(firefoxSvgFetch2, {
+ name: Expect.stringMatches(/Load \d+:.*firefox-logo-nightly.svg/),
+ data: Expect.objectContainsOnly({
+ type: "Network",
+ status: "STATUS_STOP",
+ URI: fullUrl("firefox-logo-nightly.svg"),
+ requestMethod: "GET",
+ contentType: "image/svg+xml",
+ // Because the request races with the cache, these 2 values are valid:
+ // "Missed" when the cache answered before we get a result from the network.
+ // "Unresolved" when we got a response from the network before the cache subsystem.
+ cache: Expect.stringMatches(/^(Missed|Unresolved)$/),
+ startTime: Expect.number(),
+ endTime: Expect.number(),
+ domainLookupStart: Expect.number(),
+ domainLookupEnd: Expect.number(),
+ connectStart: Expect.number(),
+ tcpConnectEnd: Expect.number(),
+ connectEnd: Expect.number(),
+ requestStart: Expect.number(),
+ responseStart: Expect.number(),
+ responseEnd: Expect.number(),
+ id: Expect.number(),
+ count: Expect.number(),
+ pri: Expect.number(),
+ // Note: no innerWindowID here, is that a bug?
+ }),
+ });
+ /* ----- ∕REQUESTED SVG FILE ---- */
+ }
+
+ // It's possible that the service worker thread IS the content thread, in
+ // that case we'll get all markers in the same thread.
+ // The "1" requests are the initial requests that are intercepted, coming
+ // from the web page, while the "2" requests are the requests coming from
+ // the service worker.
+ let htmlFetch1, generatedSvgFetch1, firefoxSvgFetch1;
+
+ // First, let's handle the case where the threads are different:
+ if (serviceWorkerParentThread !== contentThread) {
+ // In the content process (that is the process for the web page), we have
+ // 3 network markers:
+ // - 1 for the HTML page
+ // - 1 for the generated svg file
+ // - 1 for the firefox svg file
+ // Indeed, the service worker interception is invisible from the context
+ // of the web page, so we just get 3 "normal" requests. However these
+ // requests will miss all timing information, because they're hidden by
+ // the service worker interception. We may want to fix this...
+ Assert.equal(
+ contentStopMarkers.length,
+ 3, // 1 for each file
+ "There should be 3 stop markers in the content process."
+ );
+
+ [htmlFetch1, generatedSvgFetch1, firefoxSvgFetch1] = contentStopMarkers;
+ } else {
+ // Else case: the service worker parent thread IS the content thread
+ // (note: this is always the case with fission). In that case all network
+ // markers tested in the above block are together in the same object.
+ Assert.equal(
+ contentStopMarkers.length,
+ 5,
+ "There should be 5 stop markers in the combined process (containing both the content page and the service worker)"
+ );
+
+ // Because of how the test is done, these markers are ordered by the
+ // position of the START markers.
+ [
+ // For the htmlFetch request, note that 2 is before 1, because that's
+ // the top level navigation. Indeed for the top level navigation
+ // everything happens first in the main process, possibly before a
+ // content process even exists, and the content process is merely
+ // notified at the end.
+ htmlFetch1,
+ generatedSvgFetch1,
+ firefoxSvgFetch1,
+ ] = contentStopMarkers;
+ }
+
+ // Let's test first the markers coming from the content page.
+ Assert.objectContains(htmlFetch1, {
+ name: Expect.stringMatches(/Load \d+:.*serviceworker_simple.html/),
+ data: Expect.objectContainsOnly({
+ type: "Network",
+ status: "STATUS_STOP",
+ URI: fullUrl("serviceworker_simple.html"),
+ requestMethod: "GET",
+ contentType: "text/html",
+ startTime: Expect.number(),
+ endTime: Expect.number(),
+ id: Expect.number(),
+ pri: Expect.number(),
+ }),
+ });
+ Assert.objectContains(generatedSvgFetch1, {
+ name: Expect.stringMatches(/Load \d+:.*firefox-generated.svg/),
+ data: Expect.objectContainsOnly({
+ type: "Network",
+ status: "STATUS_STOP",
+ URI: fullUrl("firefox-generated.svg"),
+ requestMethod: "GET",
+ contentType: "image/svg+xml",
+ startTime: Expect.number(),
+ endTime: Expect.number(),
+ id: Expect.number(),
+ pri: Expect.number(),
+ innerWindowID: Expect.number(),
+ }),
+ });
+ Assert.objectContains(firefoxSvgFetch1, {
+ name: Expect.stringMatches(/Load \d+:.*firefox-logo-nightly.svg/),
+ data: Expect.objectContainsOnly({
+ type: "Network",
+ status: "STATUS_STOP",
+ URI: fullUrl("firefox-logo-nightly.svg"),
+ requestMethod: "GET",
+ contentType: "image/svg+xml",
+ startTime: Expect.number(),
+ endTime: Expect.number(),
+ id: Expect.number(),
+ pri: Expect.number(),
+ innerWindowID: Expect.number(),
+ }),
+ });
+ });
+});
diff --git a/tools/profiler/tests/browser/browser_test_marker_network_simple.js b/tools/profiler/tests/browser/browser_test_marker_network_simple.js
new file mode 100644
index 0000000000..15894305a7
--- /dev/null
+++ b/tools/profiler/tests/browser/browser_test_marker_network_simple.js
@@ -0,0 +1,81 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+/**
+ * Test that we emit network markers accordingly
+ */
+add_task(async function test_network_markers() {
+ Assert.ok(
+ !Services.profiler.IsActive(),
+ "The profiler is not currently active"
+ );
+
+ startProfilerForMarkerTests();
+
+ const url = BASE_URL + "simple.html?cacheBust=" + Math.random();
+ await BrowserTestUtils.withNewTab(url, async contentBrowser => {
+ const contentPid = await SpecialPowers.spawn(
+ contentBrowser,
+ [],
+ () => Services.appinfo.processID
+ );
+
+ const { parentThread, contentThread } = await stopProfilerNowAndGetThreads(
+ contentPid
+ );
+
+ const parentNetworkMarkers = getInflatedNetworkMarkers(parentThread);
+ const contentNetworkMarkers = getInflatedNetworkMarkers(contentThread);
+ info(JSON.stringify(parentNetworkMarkers, null, 2));
+ info(JSON.stringify(contentNetworkMarkers, null, 2));
+
+ Assert.equal(
+ parentNetworkMarkers.length,
+ 2,
+ `We should get a pair of network markers in the parent thread.`
+ );
+ Assert.equal(
+ contentNetworkMarkers.length,
+ 2,
+ `We should get a pair of network markers in the content thread.`
+ );
+
+ const parentStopMarker = parentNetworkMarkers[1];
+ const contentStopMarker = contentNetworkMarkers[1];
+
+ const expectedProperties = {
+ name: Expect.stringMatches(`Load \\d+:.*${escapeStringRegexp(url)}`),
+ data: Expect.objectContains({
+ status: "STATUS_STOP",
+ URI: url,
+ requestMethod: "GET",
+ contentType: "text/html",
+ startTime: Expect.number(),
+ endTime: Expect.number(),
+ domainLookupStart: Expect.number(),
+ domainLookupEnd: Expect.number(),
+ connectStart: Expect.number(),
+ tcpConnectEnd: Expect.number(),
+ connectEnd: Expect.number(),
+ requestStart: Expect.number(),
+ responseStart: Expect.number(),
+ responseEnd: Expect.number(),
+ id: Expect.number(),
+ count: Expect.number(),
+ pri: Expect.number(),
+ }),
+ };
+
+ Assert.objectContains(parentStopMarker, expectedProperties);
+ // The cache information is missing from the content marker, it's only part
+ // of the parent marker. See Bug 1544821.
+ Assert.objectContains(parentStopMarker.data, {
+ // Because the request races with the cache, these 2 values are valid:
+ // "Missed" when the cache answered before we get a result from the network.
+ // "Unresolved" when we got a response from the network before the cache subsystem.
+ cache: Expect.stringMatches(/^(Missed|Unresolved)$/),
+ });
+ Assert.objectContains(contentStopMarker, expectedProperties);
+ });
+});
diff --git a/tools/profiler/tests/browser/browser_test_marker_network_sts.js b/tools/profiler/tests/browser/browser_test_marker_network_sts.js
new file mode 100644
index 0000000000..26f2a1c756
--- /dev/null
+++ b/tools/profiler/tests/browser/browser_test_marker_network_sts.js
@@ -0,0 +1,130 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+/**
+ * Test that we emit network markers accordingly.
+ * In this file we'll test that we behave properly with STS redirections.
+ */
+
+add_task(async function test_network_markers_service_worker_setup() {
+ await SpecialPowers.pushPrefEnv({
+ set: [
+ // Disabling cache makes the result more predictable especially in verify mode.
+ ["browser.cache.disk.enable", false],
+ ["browser.cache.memory.enable", false],
+ // We want to test upgrading requests
+ ["dom.security.https_only_mode", true],
+ ],
+ });
+});
+
+add_task(async function test_network_markers_redirect_to_https() {
+ // In this test, we request an HTML page with http that gets redirected to https.
+ Assert.ok(
+ !Services.profiler.IsActive(),
+ "The profiler is not currently active"
+ );
+
+ startProfilerForMarkerTests();
+
+ const url = BASE_URL + "simple.html";
+ const targetUrl = BASE_URL_HTTPS + "simple.html";
+
+ await BrowserTestUtils.withNewTab(url, async contentBrowser => {
+ const contentPid = await SpecialPowers.spawn(
+ contentBrowser,
+ [],
+ () => Services.appinfo.processID
+ );
+
+ const { parentThread, contentThread } = await stopProfilerNowAndGetThreads(
+ contentPid
+ );
+
+ const parentNetworkMarkers = getInflatedNetworkMarkers(parentThread);
+ const contentNetworkMarkers = getInflatedNetworkMarkers(contentThread);
+ info(JSON.stringify(parentNetworkMarkers, null, 2));
+ info(JSON.stringify(contentNetworkMarkers, null, 2));
+
+ Assert.equal(
+ parentNetworkMarkers.length,
+ 4,
+ `We should get 2 pairs of network markers in the parent thread.`
+ );
+
+ /* It looks like that for a redirection for the top level navigation, the
+ * content thread sees the markers for the second request only.
+ * See Bug 1692879. */
+ Assert.equal(
+ contentNetworkMarkers.length,
+ 2,
+ `We should get one pair of network markers in the content thread.`
+ );
+
+ const parentRedirectMarker = parentNetworkMarkers[1];
+ const parentStopMarker = parentNetworkMarkers[3];
+ // There's no content redirect marker for the reason outlined above.
+ const contentStopMarker = contentNetworkMarkers[1];
+
+ Assert.objectContains(parentRedirectMarker, {
+ name: Expect.stringMatches(`Load \\d+:.*${escapeStringRegexp(url)}`),
+ data: Expect.objectContainsOnly({
+ type: "Network",
+ status: "STATUS_REDIRECT",
+ URI: url,
+ RedirectURI: targetUrl,
+ requestMethod: "GET",
+ contentType: null,
+ startTime: Expect.number(),
+ endTime: Expect.number(),
+ id: Expect.number(),
+ redirectId: parentStopMarker.data.id,
+ pri: Expect.number(),
+ cache: "Unresolved",
+ redirectType: "Permanent",
+ isHttpToHttpsRedirect: true,
+ }),
+ });
+
+ const expectedProperties = {
+ name: Expect.stringMatches(
+ `Load \\d+:.*${escapeStringRegexp(targetUrl)}`
+ ),
+ };
+ const expectedDataProperties = {
+ type: "Network",
+ status: "STATUS_STOP",
+ URI: targetUrl,
+ requestMethod: "GET",
+ contentType: "text/html",
+ startTime: Expect.number(),
+ endTime: Expect.number(),
+ domainLookupStart: Expect.number(),
+ domainLookupEnd: Expect.number(),
+ connectStart: Expect.number(),
+ tcpConnectEnd: Expect.number(),
+ connectEnd: Expect.number(),
+ requestStart: Expect.number(),
+ responseStart: Expect.number(),
+ responseEnd: Expect.number(),
+ id: Expect.number(),
+ count: Expect.number(),
+ pri: Expect.number(),
+ };
+
+ Assert.objectContains(parentStopMarker, expectedProperties);
+ Assert.objectContains(contentStopMarker, expectedProperties);
+
+ // The cache information is missing from the content marker, it's only part
+ // of the parent marker. See Bug 1544821.
+ Assert.objectContainsOnly(parentStopMarker.data, {
+ ...expectedDataProperties,
+ // Because the request races with the cache, these 2 values are valid:
+ // "Missed" when the cache answered before we get a result from the network.
+ // "Unresolved" when we got a response from the network before the cache subsystem.
+ cache: Expect.stringMatches(/^(Missed|Unresolved)$/),
+ });
+ Assert.objectContainsOnly(contentStopMarker.data, expectedDataProperties);
+ });
+});
diff --git a/tools/profiler/tests/browser/browser_test_markers_gc_cc.js b/tools/profiler/tests/browser/browser_test_markers_gc_cc.js
new file mode 100644
index 0000000000..a4a94d60cc
--- /dev/null
+++ b/tools/profiler/tests/browser/browser_test_markers_gc_cc.js
@@ -0,0 +1,49 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+add_task(async function test_markers_gc_cc() {
+ info("Test GC&CC markers.");
+
+ info("Create a throwaway profile.");
+ await startProfiler({});
+ let tempProfileContainer = { profile: null };
+ tempProfileContainer.profile = await waitSamplingAndStopAndGetProfile();
+
+ info("Restart the profiler.");
+ await startProfiler({});
+
+ info("Throw away the previous profile, which should be garbage-collected.");
+ Assert.equal(
+ typeof tempProfileContainer.profile,
+ "object",
+ "Previously-captured profile should be an object"
+ );
+ delete tempProfileContainer.profile;
+ Assert.equal(
+ typeof tempProfileContainer.profile,
+ "undefined",
+ "Deleted profile should now be undefined"
+ );
+
+ info("Force GC&CC");
+ SpecialPowers.gc();
+ SpecialPowers.forceShrinkingGC();
+ SpecialPowers.forceCC();
+ SpecialPowers.gc();
+ SpecialPowers.forceShrinkingGC();
+ SpecialPowers.forceCC();
+
+ info("Stop the profiler and get the profile.");
+ const profile = await waitSamplingAndStopAndGetProfile();
+
+ const markers = getInflatedMarkerData(profile.threads[0]);
+ Assert.ok(
+ markers.some(({ data }) => data?.type === "GCSlice"),
+ "A GCSlice marker was recorded"
+ );
+ Assert.ok(
+ markers.some(({ data }) => data?.type === "CCSlice"),
+ "A CCSlice marker was recorded"
+ );
+});
diff --git a/tools/profiler/tests/browser/browser_test_markers_parent_process.js b/tools/profiler/tests/browser/browser_test_markers_parent_process.js
new file mode 100644
index 0000000000..28b82f8054
--- /dev/null
+++ b/tools/profiler/tests/browser/browser_test_markers_parent_process.js
@@ -0,0 +1,37 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+add_task(async function test_markers_parent_process() {
+ info("Test markers that are generated by the browser's parent process.");
+
+ info("Start the profiler in nostacksampling mode.");
+ await startProfiler({ features: ["nostacksampling"] });
+
+ info("Dispatch a DOMEvent");
+ window.dispatchEvent(new Event("synthetic"));
+
+ info("Stop the profiler and get the profile.");
+ const profile = await stopNowAndGetProfile();
+
+ const markers = getInflatedMarkerData(profile.threads[0]);
+ {
+ const domEventStart = markers.find(
+ ({ phase, data }) =>
+ phase === INTERVAL_START && data?.eventType === "synthetic"
+ );
+ const domEventEnd = markers.find(
+ ({ phase, data }) =>
+ phase === INTERVAL_END && data?.eventType === "synthetic"
+ );
+ ok(domEventStart, "A start DOMEvent was generated");
+ ok(domEventEnd, "An end DOMEvent was generated");
+ ok(
+ domEventEnd.data.latency > 0,
+ "DOMEvent had a a latency value generated."
+ );
+ ok(domEventEnd.data.type === "DOMEvent");
+ ok(domEventEnd.name === "DOMEvent");
+ }
+ // Add more marker tests.
+});
diff --git a/tools/profiler/tests/browser/browser_test_markers_preferencereads.js b/tools/profiler/tests/browser/browser_test_markers_preferencereads.js
new file mode 100644
index 0000000000..0ae183f874
--- /dev/null
+++ b/tools/profiler/tests/browser/browser_test_markers_preferencereads.js
@@ -0,0 +1,73 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+requestLongerTimeout(10);
+
+const kContentPref = "font.size.variable.x-western";
+
+function countPrefReadsInThread(pref, thread) {
+ let count = 0;
+ for (let payload of getPayloadsOfType(thread, "Preference")) {
+ if (payload.prefName === pref) {
+ count++;
+ }
+ }
+ return count;
+}
+
+async function waitForPaintAfterLoad() {
+ return SpecialPowers.spawn(gBrowser.selectedBrowser, [], () => {
+ return new Promise(function (resolve) {
+ function listener() {
+ if (content.document.readyState == "complete") {
+ content.requestAnimationFrame(() => content.setTimeout(resolve, 0));
+ }
+ }
+ if (content.document.readyState != "complete") {
+ content.document.addEventListener("readystatechange", listener);
+ } else {
+ listener();
+ }
+ });
+ });
+}
+
+/**
+ * Test the Preference Read markers.
+ */
+add_task(async function test_profile_preferencereads_markers() {
+ Assert.ok(
+ !Services.profiler.IsActive(),
+ "The profiler is not currently active"
+ );
+
+ await startProfiler({ features: ["js"] });
+
+ const url = BASE_URL + "single_frame.html";
+ await BrowserTestUtils.withNewTab(url, async contentBrowser => {
+ const contentPid = await SpecialPowers.spawn(
+ contentBrowser,
+ [],
+ () => Services.appinfo.processID
+ );
+
+ await waitForPaintAfterLoad();
+
+ // Ensure we read a pref in the content process.
+ await SpecialPowers.spawn(contentBrowser, [kContentPref], pref => {
+ Services.prefs.getIntPref(pref);
+ });
+
+ // Check that some Preference Read profile markers were generated.
+ {
+ const { contentThread } = await stopProfilerNowAndGetThreads(contentPid);
+
+ Assert.greater(
+ countPrefReadsInThread(kContentPref, contentThread),
+ 0,
+ `Preference Read profile markers for ${kContentPref} were recorded.`
+ );
+ }
+ });
+});
diff --git a/tools/profiler/tests/browser/browser_test_profile_capture_by_pid.js b/tools/profiler/tests/browser/browser_test_profile_capture_by_pid.js
new file mode 100644
index 0000000000..14d76dbcaf
--- /dev/null
+++ b/tools/profiler/tests/browser/browser_test_profile_capture_by_pid.js
@@ -0,0 +1,199 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+function ProcessHasSamplerThread(process) {
+ return process.threads.some(t => t.name == "SamplerThread");
+}
+
+async function GetPidsWithSamplerThread() {
+ let parentProc = await ChromeUtils.requestProcInfo();
+
+ let pids = parentProc.children
+ .filter(ProcessHasSamplerThread)
+ .map(proc => proc.pid);
+ if (ProcessHasSamplerThread(parentProc)) {
+ pids.unshift(parentProc.pid);
+ }
+ return pids;
+}
+
+// fnFilterWithContentId: Called with content child pid, returns filters to use.
+// E.g.: 123 => ["GeckoMain", "pid:123"], or 123 => ["pid:456"].
+async function test_with_filter(fnFilterWithContentId) {
+ Assert.ok(!Services.profiler.IsActive());
+ info("Clear the previous pages just in case we still some open tabs.");
+ await Services.profiler.ClearAllPages();
+
+ info("Open a tab with single_frame.html in it.");
+ const url = BASE_URL + "single_frame.html";
+ return BrowserTestUtils.withNewTab(url, async function (contentBrowser) {
+ const contentPid = await SpecialPowers.spawn(contentBrowser, [], () => {
+ return Services.appinfo.processID;
+ });
+
+ Assert.deepEqual(
+ await GetPidsWithSamplerThread(),
+ [],
+ "There should be no SamplerThreads before starting the profiler"
+ );
+
+ info("Start the profiler to test filters including 'pid:<content>'.");
+ await startProfiler({ threads: fnFilterWithContentId(contentPid) });
+
+ let pidsWithSamplerThread = null;
+ await TestUtils.waitForCondition(
+ async function () {
+ let pidsStringBefore = JSON.stringify(pidsWithSamplerThread);
+ pidsWithSamplerThread = await GetPidsWithSamplerThread();
+ return JSON.stringify(pidsWithSamplerThread) == pidsStringBefore;
+ },
+ "Wait for sampler threads to stabilize after profiler start",
+ /* interval (ms) */ 250,
+ /* maxTries */ 10
+ );
+
+ info("Capture the profile data.");
+ const profile = await waitSamplingAndStopAndGetProfile();
+
+ await TestUtils.waitForCondition(async function () {
+ return !(await GetPidsWithSamplerThread()).length;
+ }, "Wait for all sampler threads to stop after profiler stop");
+
+ return { contentPid, pidsWithSamplerThread, profile };
+ });
+}
+
+add_task(async function browser_test_profile_capture_along_with_content_pid() {
+ const { contentPid, pidsWithSamplerThread, profile } = await test_with_filter(
+ contentPid => ["GeckoMain", "pid:" + contentPid]
+ );
+
+ Assert.greater(
+ pidsWithSamplerThread.length,
+ 2,
+ "There should be lots of SamplerThreads after starting the profiler"
+ );
+
+ let contentProcessIndex = profile.processes.findIndex(
+ p => p.threads[0].pid == contentPid
+ );
+ Assert.notEqual(
+ contentProcessIndex,
+ -1,
+ "The content process should be present"
+ );
+
+ // Note: Some threads may not be registered, so we can't expect that many. But
+ // 10 is much more than the default 4.
+ Assert.greater(
+ profile.processes[contentProcessIndex].threads.length,
+ 10,
+ "The content process should have many threads"
+ );
+
+ Assert.equal(
+ profile.threads.length,
+ 1,
+ "The parent process should have only one thread"
+ );
+ Assert.equal(
+ profile.threads[0].name,
+ "GeckoMain",
+ "The parent process should have the main thread"
+ );
+});
+
+add_task(async function browser_test_profile_capture_along_with_other_pid() {
+ const parentPid = Services.appinfo.processID;
+ const { contentPid, pidsWithSamplerThread, profile } = await test_with_filter(
+ contentPid => ["GeckoMain", "pid:" + parentPid]
+ );
+
+ Assert.greater(
+ pidsWithSamplerThread.length,
+ 2,
+ "There should be lots of SamplerThreads after starting the profiler"
+ );
+
+ let contentProcessIndex = profile.processes.findIndex(
+ p => p.threads[0].pid == contentPid
+ );
+ Assert.notEqual(
+ contentProcessIndex,
+ -1,
+ "The content process should be present"
+ );
+
+ Assert.equal(
+ profile.processes[contentProcessIndex].threads.length,
+ 1,
+ "The content process should have only one thread"
+ );
+
+ // Note: Some threads may not be registered, so we can't expect that many. But
+ // 10 is much more than the default 4.
+ Assert.greater(
+ profile.threads.length,
+ 10,
+ "The parent process should have many threads"
+ );
+});
+
+add_task(async function browser_test_profile_capture_by_only_content_pid() {
+ const parentPid = Services.appinfo.processID;
+ const { contentPid, pidsWithSamplerThread, profile } = await test_with_filter(
+ contentPid => ["pid:" + contentPid]
+ );
+
+ // The sampler thread always runs in the parent process, see bug 1754100.
+ Assert.deepEqual(
+ pidsWithSamplerThread,
+ [parentPid, contentPid],
+ "There should only be SamplerThreads in the parent and the target child"
+ );
+
+ Assert.equal(
+ profile.processes.length,
+ 1,
+ "There should only be one child process"
+ );
+ // Note: Some threads may not be registered, so we can't expect that many. But
+ // 10 is much more than the default 4.
+ Assert.greater(
+ profile.processes[0].threads.length,
+ 10,
+ "The child process should have many threads"
+ );
+ Assert.equal(
+ profile.processes[0].threads[0].pid,
+ contentPid,
+ "The only child process should be our content"
+ );
+});
+
+add_task(async function browser_test_profile_capture_by_only_parent_pid() {
+ const parentPid = Services.appinfo.processID;
+ const { pidsWithSamplerThread, profile } = await test_with_filter(
+ contentPid => ["pid:" + parentPid]
+ );
+
+ Assert.deepEqual(
+ pidsWithSamplerThread,
+ [parentPid],
+ "There should only be a SamplerThread in the parent"
+ );
+
+ // Note: Some threads may not be registered, so we can't expect that many. But
+ // 10 is much more than the default 4.
+ Assert.greater(
+ profile.threads.length,
+ 10,
+ "The parent process should have many threads"
+ );
+ Assert.equal(
+ profile.processes.length,
+ 0,
+ "There should be no child processes"
+ );
+});
diff --git a/tools/profiler/tests/browser/browser_test_profile_fission.js b/tools/profiler/tests/browser/browser_test_profile_fission.js
new file mode 100644
index 0000000000..775fc8048e
--- /dev/null
+++ b/tools/profiler/tests/browser/browser_test_profile_fission.js
@@ -0,0 +1,191 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+if (SpecialPowers.useRemoteSubframes) {
+ // Bug 1586105: these tests could time out in some extremely slow conditions,
+ // when fission is enabled.
+ // Requesting a longer timeout should make it pass.
+ requestLongerTimeout(2);
+}
+
+add_task(async function test_profile_fission_no_private_browsing() {
+ // Requesting the complete log to be able to debug Bug 1586105.
+ SimpleTest.requestCompleteLog();
+ Assert.ok(!Services.profiler.IsActive());
+ info("Clear the previous pages just in case we still have some open tabs.");
+ await Services.profiler.ClearAllPages();
+
+ info(
+ "Start the profiler to test the page information with single frame page."
+ );
+ await startProfiler();
+
+ info("Open a private window with single_frame.html in it.");
+ const win = await BrowserTestUtils.openNewBrowserWindow({
+ fission: true,
+ });
+
+ try {
+ const url = BASE_URL_HTTPS + "single_frame.html";
+ const contentBrowser = win.gBrowser.selectedBrowser;
+ BrowserTestUtils.loadURIString(contentBrowser, url);
+ await BrowserTestUtils.browserLoaded(contentBrowser, false, url);
+
+ const parentPid = Services.appinfo.processID;
+ const contentPid = await SpecialPowers.spawn(contentBrowser, [], () => {
+ return Services.appinfo.processID;
+ });
+
+ // Getting the active Browser ID to assert the page info tabID later.
+ const activeTabID = contentBrowser.browsingContext.browserId;
+
+ info("Capture the profile data.");
+ const { profile, contentProcess, contentThread } =
+ await stopProfilerNowAndGetThreads(contentPid);
+
+ Assert.equal(
+ contentThread.isPrivateBrowsing,
+ false,
+ "The content process has the private browsing flag set to false."
+ );
+
+ Assert.equal(
+ contentThread.userContextId,
+ 0,
+ "The content process has the information about the container used for this process"
+ );
+
+ info(
+ "Check if the captured page is the one with correct values we created."
+ );
+
+ let pageFound = false;
+ for (const page of contentProcess.pages) {
+ if (page.url == url) {
+ Assert.equal(page.url, url);
+ Assert.equal(typeof page.tabID, "number");
+ Assert.equal(page.tabID, activeTabID);
+ Assert.equal(typeof page.innerWindowID, "number");
+ // Top level document will have no embedder.
+ Assert.equal(page.embedderInnerWindowID, 0);
+ Assert.equal(typeof page.isPrivateBrowsing, "boolean");
+ Assert.equal(page.isPrivateBrowsing, false);
+ pageFound = true;
+ break;
+ }
+ }
+ Assert.equal(pageFound, true);
+
+ info("Check that the profiling logs exist with the expected properties.");
+ Assert.equal(typeof profile.profilingLog, "object");
+ Assert.equal(typeof profile.profilingLog[parentPid], "object");
+ const parentLog = profile.profilingLog[parentPid];
+ Assert.equal(typeof parentLog.profilingLogBegin_TSms, "number");
+ Assert.equal(typeof parentLog.profilingLogEnd_TSms, "number");
+ Assert.equal(typeof parentLog.bufferGlobalController, "object");
+ Assert.equal(
+ typeof parentLog.bufferGlobalController.controllerCreationTime_TSms,
+ "number"
+ );
+
+ Assert.equal(typeof profile.profileGatheringLog, "object");
+ Assert.equal(typeof profile.profileGatheringLog[parentPid], "object");
+ Assert.equal(
+ typeof profile.profileGatheringLog[parentPid]
+ .profileGatheringLogBegin_TSms,
+ "number"
+ );
+ Assert.equal(
+ typeof profile.profileGatheringLog[parentPid].profileGatheringLogEnd_TSms,
+ "number"
+ );
+
+ Assert.equal(typeof contentProcess.profilingLog, "object");
+ Assert.equal(typeof contentProcess.profilingLog[contentPid], "object");
+ Assert.equal(
+ typeof contentProcess.profilingLog[contentPid].profilingLogBegin_TSms,
+ "number"
+ );
+ Assert.equal(
+ typeof contentProcess.profilingLog[contentPid].profilingLogEnd_TSms,
+ "number"
+ );
+
+ Assert.equal(typeof contentProcess.profileGatheringLog, "undefined");
+ } finally {
+ await BrowserTestUtils.closeWindow(win);
+ }
+});
+
+add_task(async function test_profile_fission_private_browsing() {
+ // Requesting the complete log to be able to debug Bug 1586105.
+ SimpleTest.requestCompleteLog();
+ Assert.ok(!Services.profiler.IsActive());
+ info("Clear the previous pages just in case we still have some open tabs.");
+ await Services.profiler.ClearAllPages();
+
+ info(
+ "Start the profiler to test the page information with single frame page."
+ );
+ await startProfiler();
+
+ info("Open a private window with single_frame.html in it.");
+ const win = await BrowserTestUtils.openNewBrowserWindow({
+ private: true,
+ fission: true,
+ });
+
+ try {
+ const url = BASE_URL_HTTPS + "single_frame.html";
+ const contentBrowser = win.gBrowser.selectedBrowser;
+ BrowserTestUtils.loadURIString(contentBrowser, url);
+ await BrowserTestUtils.browserLoaded(contentBrowser, false, url);
+
+ const contentPid = await SpecialPowers.spawn(contentBrowser, [], () => {
+ return Services.appinfo.processID;
+ });
+
+ // Getting the active Browser ID to assert the page info tabID later.
+ const activeTabID = contentBrowser.browsingContext.browserId;
+
+ info("Capture the profile data.");
+ const { contentProcess, contentThread } =
+ await stopProfilerNowAndGetThreads(contentPid);
+
+ Assert.equal(
+ contentThread.isPrivateBrowsing,
+ true,
+ "The content process has the private browsing flag set to true."
+ );
+
+ Assert.equal(
+ contentThread.userContextId,
+ 0,
+ "The content process has the information about the container used for this process"
+ );
+
+ info(
+ "Check if the captured page is the one with correct values we created."
+ );
+
+ let pageFound = false;
+ for (const page of contentProcess.pages) {
+ if (page.url == url) {
+ Assert.equal(page.url, url);
+ Assert.equal(typeof page.tabID, "number");
+ Assert.equal(page.tabID, activeTabID);
+ Assert.equal(typeof page.innerWindowID, "number");
+ // Top level document will have no embedder.
+ Assert.equal(page.embedderInnerWindowID, 0);
+ Assert.equal(typeof page.isPrivateBrowsing, "boolean");
+ Assert.equal(page.isPrivateBrowsing, true);
+ pageFound = true;
+ break;
+ }
+ }
+ Assert.equal(pageFound, true);
+ } finally {
+ await BrowserTestUtils.closeWindow(win);
+ }
+});
diff --git a/tools/profiler/tests/browser/browser_test_profile_multi_frame_page_info.js b/tools/profiler/tests/browser/browser_test_profile_multi_frame_page_info.js
new file mode 100644
index 0000000000..854587678d
--- /dev/null
+++ b/tools/profiler/tests/browser/browser_test_profile_multi_frame_page_info.js
@@ -0,0 +1,83 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+if (SpecialPowers.useRemoteSubframes) {
+ // Bug 1586105: these tests could time out in some extremely slow conditions,
+ // when fission is enabled.
+ // Requesting a longer timeout should make it pass.
+ requestLongerTimeout(2);
+}
+
+add_task(async function test_profile_multi_frame_page_info() {
+ // Requesting the complete log to be able to debug Bug 1586105.
+ SimpleTest.requestCompleteLog();
+ Assert.ok(!Services.profiler.IsActive());
+ info("Clear the previous pages just in case we still have some open tabs.");
+ await Services.profiler.ClearAllPages();
+
+ info(
+ "Start the profiler to test the page information with multi frame page."
+ );
+ await startProfiler();
+
+ info("Open a tab with multi_frame.html in it.");
+ // multi_frame.html embeds single_frame.html inside an iframe.
+ const url = BASE_URL + "multi_frame.html";
+ await BrowserTestUtils.withNewTab(url, async function (contentBrowser) {
+ const contentPid = await SpecialPowers.spawn(contentBrowser, [], () => {
+ return Services.appinfo.processID;
+ });
+
+ // Getting the active Browser ID to assert the page info tabID later.
+ const win = Services.wm.getMostRecentWindow("navigator:browser");
+ const activeTabID = win.gBrowser.selectedBrowser.browsingContext.browserId;
+
+ info("Capture the profile data.");
+ const { contentProcess } = await stopProfilerNowAndGetThreads(contentPid);
+
+ info(
+ "Check if the captured pages are the ones with correct values we created."
+ );
+
+ let parentPage;
+ let foundPage = 0;
+ for (const page of contentProcess.pages) {
+ // Parent page
+ if (page.url == url) {
+ Assert.equal(page.url, url);
+ Assert.equal(typeof page.tabID, "number");
+ Assert.equal(page.tabID, activeTabID);
+ Assert.equal(typeof page.innerWindowID, "number");
+ // Top level document will have no embedder.
+ Assert.equal(page.embedderInnerWindowID, 0);
+ Assert.equal(typeof page.isPrivateBrowsing, "boolean");
+ Assert.equal(page.isPrivateBrowsing, false);
+ parentPage = page;
+ foundPage++;
+ break;
+ }
+ }
+
+ Assert.notEqual(typeof parentPage, "undefined");
+
+ for (const page of contentProcess.pages) {
+ // Child page (iframe)
+ if (page.url == BASE_URL + "single_frame.html") {
+ Assert.equal(page.url, BASE_URL + "single_frame.html");
+ Assert.equal(typeof page.tabID, "number");
+ Assert.equal(page.tabID, activeTabID);
+ Assert.equal(typeof page.innerWindowID, "number");
+ Assert.equal(typeof page.embedderInnerWindowID, "number");
+ Assert.notEqual(typeof parentPage, "undefined");
+ Assert.equal(page.embedderInnerWindowID, parentPage.innerWindowID);
+ Assert.equal(typeof page.isPrivateBrowsing, "boolean");
+ Assert.equal(page.isPrivateBrowsing, false);
+ foundPage++;
+ break;
+ }
+ }
+
+ Assert.equal(foundPage, 2);
+ });
+});
diff --git a/tools/profiler/tests/browser/browser_test_profile_single_frame_page_info.js b/tools/profiler/tests/browser/browser_test_profile_single_frame_page_info.js
new file mode 100644
index 0000000000..240213be56
--- /dev/null
+++ b/tools/profiler/tests/browser/browser_test_profile_single_frame_page_info.js
@@ -0,0 +1,132 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+if (SpecialPowers.useRemoteSubframes) {
+ // Bug 1586105: these tests could time out in some extremely slow conditions,
+ // when fission is enabled.
+ // Requesting a longer timeout should make it pass.
+ requestLongerTimeout(2);
+}
+
+add_task(async function test_profile_single_frame_page_info() {
+ // Requesting the complete log to be able to debug Bug 1586105.
+ SimpleTest.requestCompleteLog();
+ Assert.ok(!Services.profiler.IsActive());
+ info("Clear the previous pages just in case we still have some open tabs.");
+ await Services.profiler.ClearAllPages();
+
+ info(
+ "Start the profiler to test the page information with single frame page."
+ );
+ await startProfiler();
+
+ info("Open a tab with single_frame.html in it.");
+ const url = BASE_URL + "single_frame.html";
+ await BrowserTestUtils.withNewTab(url, async function (contentBrowser) {
+ const contentPid = await SpecialPowers.spawn(contentBrowser, [], () => {
+ return Services.appinfo.processID;
+ });
+
+ // Getting the active Browser ID to assert the page info tabID later.
+ const win = Services.wm.getMostRecentWindow("navigator:browser");
+ const activeTabID = win.gBrowser.selectedBrowser.browsingContext.browserId;
+
+ info("Capture the profile data.");
+ const { contentProcess } = await stopProfilerNowAndGetThreads(contentPid);
+
+ info(
+ "Check if the captured page is the one with correct values we created."
+ );
+
+ let pageFound = false;
+ for (const page of contentProcess.pages) {
+ if (page.url == url) {
+ Assert.equal(page.url, url);
+ Assert.equal(typeof page.tabID, "number");
+ Assert.equal(page.tabID, activeTabID);
+ Assert.equal(typeof page.innerWindowID, "number");
+ // Top level document will have no embedder.
+ Assert.equal(page.embedderInnerWindowID, 0);
+ Assert.equal(typeof page.isPrivateBrowsing, "boolean");
+ Assert.equal(page.isPrivateBrowsing, false);
+ pageFound = true;
+ break;
+ }
+ }
+ Assert.equal(pageFound, true);
+ });
+});
+
+add_task(async function test_profile_private_browsing() {
+ // Requesting the complete log to be able to debug Bug 1586105.
+ SimpleTest.requestCompleteLog();
+ Assert.ok(!Services.profiler.IsActive());
+ info("Clear the previous pages just in case we still have some open tabs.");
+ await Services.profiler.ClearAllPages();
+
+ info(
+ "Start the profiler to test the page information with single frame page."
+ );
+ await startProfiler();
+
+ info("Open a private window with single_frame.html in it.");
+ const win = await BrowserTestUtils.openNewBrowserWindow({
+ fission: false,
+ private: true,
+ });
+
+ try {
+ const url = BASE_URL_HTTPS + "single_frame.html";
+ const contentBrowser = win.gBrowser.selectedBrowser;
+ BrowserTestUtils.loadURIString(contentBrowser, url);
+ await BrowserTestUtils.browserLoaded(contentBrowser, false, url);
+
+ const contentPid = await SpecialPowers.spawn(contentBrowser, [], () => {
+ return Services.appinfo.processID;
+ });
+
+ // Getting the active Browser ID to assert the page info tabID later.
+ const activeTabID = contentBrowser.browsingContext.browserId;
+
+ info("Capture the profile data.");
+ const { contentProcess, contentThread } =
+ await stopProfilerNowAndGetThreads(contentPid);
+
+ // This information is available with fission only.
+ Assert.equal(
+ contentThread.isPrivateBrowsing,
+ undefined,
+ "The content process has no private browsing flag."
+ );
+
+ Assert.equal(
+ contentThread.userContextId,
+ undefined,
+ "The content process has no information about the container used for this process."
+ );
+
+ info(
+ "Check if the captured page is the one with correct values we created."
+ );
+
+ let pageFound = false;
+ for (const page of contentProcess.pages) {
+ if (page.url == url) {
+ Assert.equal(page.url, url);
+ Assert.equal(typeof page.tabID, "number");
+ Assert.equal(page.tabID, activeTabID);
+ Assert.equal(typeof page.innerWindowID, "number");
+ // Top level document will have no embedder.
+ Assert.equal(page.embedderInnerWindowID, 0);
+ Assert.equal(typeof page.isPrivateBrowsing, "boolean");
+ Assert.equal(page.isPrivateBrowsing, true);
+ pageFound = true;
+ break;
+ }
+ }
+ Assert.equal(pageFound, true);
+ } finally {
+ await BrowserTestUtils.closeWindow(win);
+ }
+});
diff --git a/tools/profiler/tests/browser/browser_test_profile_slow_capture.js b/tools/profiler/tests/browser/browser_test_profile_slow_capture.js
new file mode 100644
index 0000000000..4a675b84d1
--- /dev/null
+++ b/tools/profiler/tests/browser/browser_test_profile_slow_capture.js
@@ -0,0 +1,104 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+add_task(async function browser_test_profile_slow_capture() {
+ Assert.ok(!Services.profiler.IsActive());
+ info("Clear the previous pages just in case we still some open tabs.");
+ await Services.profiler.ClearAllPages();
+
+ info(
+ "Start the profiler to test the page information with single frame page."
+ );
+ await startProfiler({ threads: ["GeckoMain", "test-debug-child-slow-json"] });
+
+ info("Open a tab with single_frame.html in it.");
+ const url = BASE_URL + "single_frame.html";
+ await BrowserTestUtils.withNewTab(url, async function (contentBrowser) {
+ const contentPid = await SpecialPowers.spawn(contentBrowser, [], () => {
+ return Services.appinfo.processID;
+ });
+
+ // Getting the active Browser ID to assert the page info tabID later.
+ const win = Services.wm.getMostRecentWindow("navigator:browser");
+ const activeTabID = win.gBrowser.selectedBrowser.browsingContext.browserId;
+
+ info("Capture the profile data.");
+ const profile = await waitSamplingAndStopAndGetProfile();
+
+ let pageFound = false;
+ // We need to find the correct content process for that tab.
+ let contentProcess = profile.processes.find(
+ p => p.threads[0].pid == contentPid
+ );
+
+ if (!contentProcess) {
+ throw new Error(
+ `Could not find the content process with given pid: ${contentPid}`
+ );
+ }
+
+ info(
+ "Check if the captured page is the one with correct values we created."
+ );
+
+ for (const page of contentProcess.pages) {
+ if (page.url == url) {
+ Assert.equal(page.url, url);
+ Assert.equal(typeof page.tabID, "number");
+ Assert.equal(page.tabID, activeTabID);
+ Assert.equal(typeof page.innerWindowID, "number");
+ // Top level document will have no embedder.
+ Assert.equal(page.embedderInnerWindowID, 0);
+ pageFound = true;
+ break;
+ }
+ }
+ Assert.equal(pageFound, true);
+
+ info("Flush slow processes with a quick profile.");
+ await startProfiler();
+ for (let i = 0; i < 10; ++i) {
+ await Services.profiler.waitOnePeriodicSampling();
+ }
+ await stopNowAndGetProfile();
+ });
+});
+
+add_task(async function browser_test_profile_very_slow_capture() {
+ Assert.ok(!Services.profiler.IsActive());
+ info("Clear the previous pages just in case we still some open tabs.");
+ await Services.profiler.ClearAllPages();
+
+ info(
+ "Start the profiler to test the page information with single frame page."
+ );
+ await startProfiler({
+ threads: ["GeckoMain", "test-debug-child-very-slow-json"],
+ });
+
+ info("Open a tab with single_frame.html in it.");
+ const url = BASE_URL + "single_frame.html";
+ await BrowserTestUtils.withNewTab(url, async function (contentBrowser) {
+ const contentPid = await SpecialPowers.spawn(contentBrowser, [], () => {
+ return Services.appinfo.processID;
+ });
+
+ info("Capture the profile data.");
+ const profile = await waitSamplingAndStopAndGetProfile();
+
+ info("Check that the content process is missing.");
+
+ let contentProcessIndex = profile.processes.findIndex(
+ p => p.threads[0].pid == contentPid
+ );
+ Assert.equal(contentProcessIndex, -1);
+
+ info("Flush slow processes with a quick profile.");
+ await startProfiler();
+ for (let i = 0; i < 10; ++i) {
+ await Services.profiler.waitOnePeriodicSampling();
+ }
+ await stopNowAndGetProfile();
+ });
+});
diff --git a/tools/profiler/tests/browser/do_work_500ms.html b/tools/profiler/tests/browser/do_work_500ms.html
new file mode 100644
index 0000000000..9713a80671
--- /dev/null
+++ b/tools/profiler/tests/browser/do_work_500ms.html
@@ -0,0 +1,41 @@
+<!DOCTYPE html>
+<html>
+<head>
+ <meta charset="utf-8">
+ <title>Do some work for 500ms</title>
+ <script>
+ const milliseconds = 500;
+ const millisecondsPerBatch = 10;
+ const end = Date.now() + milliseconds;
+ window.total = 0;
+ let i = 0;
+
+ /**
+ * Do work for a set number of milliseconds, but only do the work in batches
+ * so the browser does not get unresponsive.
+ */
+ function doWork() {
+ const batchEnd = Date.now() + millisecondsPerBatch;
+ // Do some work for a set amount of time.
+ while (Date.now() < end) {
+ // Do some kind of work that is non-deterministic to guard against optimizations.
+ window.total += Math.random();
+ i++;
+
+ // Check if a batch is done yet.
+ if (Date.now() > batchEnd) {
+ // Defer the rest of the work into a micro task. Keep on doing this until
+ // the total milliseconds have elapsed.
+ setTimeout(doWork, 0);
+ return;
+ }
+ }
+ }
+
+ doWork();
+ </script>
+</head>
+<body>
+ Do some work for 500ms.
+</body>
+</html>
diff --git a/tools/profiler/tests/browser/firefox-logo-nightly.svg b/tools/profiler/tests/browser/firefox-logo-nightly.svg
new file mode 100644
index 0000000000..f1af370d87
--- /dev/null
+++ b/tools/profiler/tests/browser/firefox-logo-nightly.svg
@@ -0,0 +1 @@
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diff --git a/tools/profiler/tests/browser/head.js b/tools/profiler/tests/browser/head.js
new file mode 100644
index 0000000000..ef0e3128c0
--- /dev/null
+++ b/tools/profiler/tests/browser/head.js
@@ -0,0 +1,159 @@
+/* import-globals-from ../shared-head.js */
+
+Services.scriptloader.loadSubScript(
+ "chrome://mochitests/content/browser/tools/profiler/tests/browser/shared-head.js",
+ this
+);
+
+const BASE_URL = "http://example.com/browser/tools/profiler/tests/browser/";
+const BASE_URL_HTTPS =
+ "https://example.com/browser/tools/profiler/tests/browser/";
+
+registerCleanupFunction(async () => {
+ if (Services.profiler.IsActive()) {
+ info(
+ "The profiler was found to still be running at the end of the test, which means that some error likely occured. Let's stop it to prevent issues with following tests!"
+ );
+ await Services.profiler.StopProfiler();
+ }
+});
+
+/**
+ * This is a helper function that will stop the profiler and returns the main
+ * threads for the parent process and the content process with PID contentPid.
+ * This happens immediately, without waiting for any sampling to happen or
+ * finish. Use waitSamplingAndStopProfilerAndGetThreads below instead to wait
+ * for samples before stopping.
+ * This returns also the full profile in case the caller wants more information.
+ *
+ * @param {number} contentPid
+ * @returns {Promise<{profile, parentThread, contentProcess, contentThread}>}
+ */
+async function stopProfilerNowAndGetThreads(contentPid) {
+ const profile = await stopNowAndGetProfile();
+
+ const parentThread = profile.threads[0];
+ const contentProcess = profile.processes.find(
+ p => p.threads[0].pid == contentPid
+ );
+ if (!contentProcess) {
+ throw new Error(
+ `Could not find the content process with given pid: ${contentPid}`
+ );
+ }
+
+ if (!parentThread) {
+ throw new Error("The parent thread was not found in the profile.");
+ }
+
+ const contentThread = contentProcess.threads[0];
+ if (!contentThread) {
+ throw new Error("The content thread was not found in the profile.");
+ }
+
+ return { profile, parentThread, contentProcess, contentThread };
+}
+
+/**
+ * This is a helper function that will stop the profiler and returns the main
+ * threads for the parent process and the content process with PID contentPid.
+ * As opposed to stopProfilerNowAndGetThreads (with "Now") above, the profiler
+ * in that PID will not stop until there is at least one periodic sample taken.
+ *
+ * @param {number} contentPid
+ * @returns {Promise<{profile, parentThread, contentProcess, contentThread}>}
+ */
+async function waitSamplingAndStopProfilerAndGetThreads(contentPid) {
+ await Services.profiler.waitOnePeriodicSampling();
+
+ return stopProfilerNowAndGetThreads(contentPid);
+}
+
+/** This tries to find the service worker thread by targeting a very specific
+ * UserTiming marker. Indeed we use performance.mark to add this marker from the
+ * service worker's events.
+ * Then from this thread we get its parent thread. Indeed the parent thread is
+ * where all network stuff happens, so this is useful for network marker tests.
+ *
+ * @param {Object} profile
+ * @returns {{ serviceWorkerThread: Object, serviceWorkerParentThread: Object }} the found threads
+ */
+function findServiceWorkerThreads(profile) {
+ const allThreads = [
+ profile.threads,
+ ...profile.processes.map(process => process.threads),
+ ].flat();
+
+ const serviceWorkerThread = allThreads.find(
+ ({ processType, markers }) =>
+ processType === "tab" &&
+ markers.data.some(markerTuple => {
+ const data = markerTuple[markers.schema.data];
+ return (
+ data &&
+ data.type === "UserTiming" &&
+ data.name === "__serviceworker_event"
+ );
+ })
+ );
+
+ if (!serviceWorkerThread) {
+ info(
+ "We couldn't find a service worker thread. Here are all the threads in this profile:"
+ );
+ allThreads.forEach(logInformationForThread.bind(null, ""));
+ return null;
+ }
+
+ const serviceWorkerParentThread = allThreads.find(
+ ({ name, pid }) => pid === serviceWorkerThread.pid && name === "GeckoMain"
+ );
+
+ if (!serviceWorkerParentThread) {
+ info(
+ `We couldn't find a parent thread for the service worker thread (pid: ${serviceWorkerThread.pid}, tid: ${serviceWorkerThread.tid}).`
+ );
+ info("Here are all the threads in this profile:");
+ allThreads.forEach(logInformationForThread.bind(null, ""));
+
+ // Let's write the profile on disk if MOZ_UPLOAD_DIR is present
+ const path = Services.env.get("MOZ_UPLOAD_DIR");
+ if (path) {
+ const profileName = `profile_${Date.now()}.json`;
+ const profilePath = PathUtils.join(path, profileName);
+ info(
+ `We wrote down the profile on disk as an artifact, with name ${profileName}.`
+ );
+ // This function returns a Promise, but we're not waiting on it because
+ // we're in a synchronous function. Hopefully writing will be finished
+ // when the process ends.
+ IOUtils.writeJSON(profilePath, profile).catch(err =>
+ console.error("An error happened when writing the profile on disk", err)
+ );
+ }
+ throw new Error(
+ "We couldn't find a parent thread for the service worker thread. Please read logs to find more information."
+ );
+ }
+
+ return { serviceWorkerThread, serviceWorkerParentThread };
+}
+
+/**
+ * This logs some basic information about the passed thread.
+ *
+ * @param {string} prefix
+ * @param {Object} thread
+ */
+function logInformationForThread(prefix, thread) {
+ if (!thread) {
+ info(prefix + ": thread is null or undefined.");
+ return;
+ }
+
+ const { name, pid, tid, processName, processType } = thread;
+ info(
+ `${prefix}: ` +
+ `name(${name}) pid(${pid}) tid(${tid}) processName(${processName}) processType(${processType})`
+ );
+}
diff --git a/tools/profiler/tests/browser/multi_frame.html b/tools/profiler/tests/browser/multi_frame.html
new file mode 100644
index 0000000000..b2efcedd50
--- /dev/null
+++ b/tools/profiler/tests/browser/multi_frame.html
@@ -0,0 +1,11 @@
+<!DOCTYPE html>
+<html>
+<head>
+ <meta charset="utf-8">
+ <title>Multi Frame</title>
+</head>
+<body>
+ Multi Frame
+ <iframe src="single_frame.html"></iframe>
+</body>
+</html>
diff --git a/tools/profiler/tests/browser/page_with_resources.html b/tools/profiler/tests/browser/page_with_resources.html
new file mode 100644
index 0000000000..9d2bb8f218
--- /dev/null
+++ b/tools/profiler/tests/browser/page_with_resources.html
@@ -0,0 +1,11 @@
+<!DOCTYPE html>
+<html lang="en">
+ <head>
+ <meta charset="utf-8"/>
+ </head>
+ <body>
+ Testing
+ <img src='firefox-logo-nightly.svg' width="24"/>
+ <img src='redirect.sjs?firefox-logo-nightly.svg' width="24"/>
+ </body>
+</html>
diff --git a/tools/profiler/tests/browser/redirect.sjs b/tools/profiler/tests/browser/redirect.sjs
new file mode 100644
index 0000000000..2a325c3d0b
--- /dev/null
+++ b/tools/profiler/tests/browser/redirect.sjs
@@ -0,0 +1,8 @@
+function handleRequest(request, response) {
+ response.setStatusLine(request.httpVersion, 301, "Moved Permanently");
+ response.setHeader(
+ "Location",
+ decodeURIComponent(request.queryString),
+ false
+ );
+}
diff --git a/tools/profiler/tests/browser/serviceworkers/firefox-logo-nightly.svg b/tools/profiler/tests/browser/serviceworkers/firefox-logo-nightly.svg
new file mode 100644
index 0000000000..f1af370d87
--- /dev/null
+++ b/tools/profiler/tests/browser/serviceworkers/firefox-logo-nightly.svg
@@ -0,0 +1 @@
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diff --git a/tools/profiler/tests/browser/serviceworkers/serviceworker-utils.js b/tools/profiler/tests/browser/serviceworkers/serviceworker-utils.js
new file mode 100644
index 0000000000..16a9f0c91f
--- /dev/null
+++ b/tools/profiler/tests/browser/serviceworkers/serviceworker-utils.js
@@ -0,0 +1,39 @@
+// Most of this file has been stolen from dom/serviceworkers/test/utils.js.
+
+function waitForState(worker, state) {
+ return new Promise((resolve, reject) => {
+ function onStateChange() {
+ if (worker.state === state) {
+ worker.removeEventListener("statechange", onStateChange);
+ resolve();
+ }
+ if (worker.state === "redundant") {
+ worker.removeEventListener("statechange", onStateChange);
+ reject(new Error("The service worker failed to install."));
+ }
+ }
+
+ // First add an event listener, so we won't miss any change that happens
+ // before we check the current state.
+ worker.addEventListener("statechange", onStateChange);
+
+ // Now check if the worker is already in the desired state.
+ onStateChange();
+ });
+}
+
+async function registerServiceWorkerAndWait(serviceWorkerFile) {
+ if (!serviceWorkerFile) {
+ throw new Error(
+ "No service worker filename has been specified. Please specify a valid filename."
+ );
+ }
+
+ console.log(`...registering the serviceworker "${serviceWorkerFile}"`);
+ const reg = await navigator.serviceWorker.register(`./${serviceWorkerFile}`, {
+ scope: "./",
+ });
+ console.log("...waiting for activation");
+ await waitForState(reg.installing, "activated");
+ console.log("...activated!");
+}
diff --git a/tools/profiler/tests/browser/serviceworkers/serviceworker_cache_first.js b/tools/profiler/tests/browser/serviceworkers/serviceworker_cache_first.js
new file mode 100644
index 0000000000..baa07fd6d8
--- /dev/null
+++ b/tools/profiler/tests/browser/serviceworkers/serviceworker_cache_first.js
@@ -0,0 +1,34 @@
+const files = ["serviceworker_page.html", "firefox-logo-nightly.svg"];
+const cacheName = "v1";
+
+self.addEventListener("install", event => {
+ performance.mark("__serviceworker_event");
+ console.log("[SW]:", "Install event");
+
+ event.waitUntil(cacheAssets());
+});
+
+async function cacheAssets() {
+ const cache = await caches.open(cacheName);
+ await cache.addAll(files);
+}
+
+self.addEventListener("fetch", event => {
+ performance.mark("__serviceworker_event");
+ console.log("Handling fetch event for", event.request.url);
+ event.respondWith(handleFetch(event.request));
+});
+
+async function handleFetch(request) {
+ const cachedResponse = await caches.match(request);
+ if (cachedResponse) {
+ console.log("Found response in cache:", cachedResponse);
+
+ return cachedResponse;
+ }
+ console.log("No response found in cache. About to fetch from network...");
+
+ const networkResponse = await fetch(request);
+ console.log("Response from network is:", networkResponse);
+ return networkResponse;
+}
diff --git a/tools/profiler/tests/browser/serviceworkers/serviceworker_no_fetch_handler.js b/tools/profiler/tests/browser/serviceworkers/serviceworker_no_fetch_handler.js
new file mode 100644
index 0000000000..f656665ca0
--- /dev/null
+++ b/tools/profiler/tests/browser/serviceworkers/serviceworker_no_fetch_handler.js
@@ -0,0 +1,4 @@
+self.addEventListener("install", event => {
+ performance.mark("__serviceworker_event");
+ console.log("[SW]:", "Install event");
+});
diff --git a/tools/profiler/tests/browser/serviceworkers/serviceworker_no_respondWith_in_fetch_handler.js b/tools/profiler/tests/browser/serviceworkers/serviceworker_no_respondWith_in_fetch_handler.js
new file mode 100644
index 0000000000..255c8269a1
--- /dev/null
+++ b/tools/profiler/tests/browser/serviceworkers/serviceworker_no_respondWith_in_fetch_handler.js
@@ -0,0 +1,9 @@
+self.addEventListener("install", event => {
+ performance.mark("__serviceworker_event");
+ console.log("[SW]:", "Install event");
+});
+
+self.addEventListener("fetch", event => {
+ performance.mark("__serviceworker_event");
+ console.log("Handling fetch event for", event.request.url);
+});
diff --git a/tools/profiler/tests/browser/serviceworkers/serviceworker_page.html b/tools/profiler/tests/browser/serviceworkers/serviceworker_page.html
new file mode 100644
index 0000000000..1c2100a9d6
--- /dev/null
+++ b/tools/profiler/tests/browser/serviceworkers/serviceworker_page.html
@@ -0,0 +1,10 @@
+<!doctype html>
+<html>
+ <head>
+ <meta charset='utf-8'>
+ <meta name='viewport' content='initial-scale=1'>
+ </head>
+ <body>
+ <img src='firefox-logo-nightly.svg' width="24">
+ </body>
+</html>
diff --git a/tools/profiler/tests/browser/serviceworkers/serviceworker_register.html b/tools/profiler/tests/browser/serviceworkers/serviceworker_register.html
new file mode 100644
index 0000000000..86719787f4
--- /dev/null
+++ b/tools/profiler/tests/browser/serviceworkers/serviceworker_register.html
@@ -0,0 +1,9 @@
+<!doctype html>
+<html>
+ <head>
+ <meta charset='utf-8'>
+ <script src='serviceworker-utils.js'></script>
+ </head>
+ <body>
+ </body>
+</html>
diff --git a/tools/profiler/tests/browser/serviceworkers/serviceworker_simple.html b/tools/profiler/tests/browser/serviceworkers/serviceworker_simple.html
new file mode 100644
index 0000000000..f7c32d02c3
--- /dev/null
+++ b/tools/profiler/tests/browser/serviceworkers/serviceworker_simple.html
@@ -0,0 +1,9 @@
+<!DOCTYPE html>
+<html lang="en">
+ <head>
+ <meta charset="utf-8"/>
+ </head>
+ <body>
+ Testing
+ </body>
+</html>
diff --git a/tools/profiler/tests/browser/serviceworkers/serviceworker_synthetized_response.js b/tools/profiler/tests/browser/serviceworkers/serviceworker_synthetized_response.js
new file mode 100644
index 0000000000..891b679a5f
--- /dev/null
+++ b/tools/profiler/tests/browser/serviceworkers/serviceworker_synthetized_response.js
@@ -0,0 +1,27 @@
+self.addEventListener("install", event => {
+ performance.mark("__serviceworker_event");
+ dump("[SW]:", "Install event\n");
+});
+
+self.addEventListener("fetch", event => {
+ performance.mark("__serviceworker_event");
+ dump(`Handling fetch event for ${event.request.url}\n`);
+ event.respondWith(handleFetch(event.request));
+});
+
+async function handleFetch(request) {
+ if (request.url.endsWith("-generated.svg")) {
+ dump(
+ "An icon file that should be generated was requested, let's answer directly.\n"
+ );
+ return new Response(
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style="fill:url(#radial-gradient-2)"/><path d="M813.92,801c21.08-23.24,40-49.82,54.35-80,36.9-77.58,94-206.58,49-341.31C881.77,273.22,833,215,771.11,158.12,670.56,65.76,642.48,24.52,642.48,0c0,0-116.09,129.41-65.74,264.38s153.46,130,221.68,270.87c80.27,165.74-64.95,346.61-185,397.24,7.35-1.63,267-60.38,280.61-208.88C893.68,726.34,887.83,767.41,813.92,801Z" style="fill:url(#linear-gradient-7)"/><path d="M477.59,319.37c.39-8.77-4.16-14.66-76.68-21.46-29.84-2.76-41.26-30.33-44.75-41.94-10.61,27.56-15,56.49-12.64,91.48,1.61,22.92,17,47.52,24.37,62,0,0,1.64-2.13,2.39-2.91,13.86-14.43,71.94-36.42,77.39-39.54C453.69,363.16,476.58,346.44,477.59,319.37Z" style="fill:url(#linear-gradient-8)"/><path d="M477.59,319.37c.39-8.77-4.16-14.66-76.68-21.46-29.84-2.76-41.26-30.33-44.75-41.94-10.61,27.56-15,56.49-12.64,91.48,1.61,22.92,17,47.52,24.37,62,0,0,1.64-2.13,2.39-2.91,13.86-14.43,71.94-36.42,77.39-39.54C453.69,363.16,476.58,346.44,477.59,319.37Z" 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style="fill:url(#linear-gradient-13)"/></g></g></g></g></svg>`,
+ { headers: { "content-type": "image/svg+xml" } }
+ );
+ }
+
+ dump(
+ `A normal URL ${request.url} has been requested, let's fetch it from the network.\n`
+ );
+ return fetch(request);
+}
diff --git a/tools/profiler/tests/browser/simple.html b/tools/profiler/tests/browser/simple.html
new file mode 100644
index 0000000000..f7c32d02c3
--- /dev/null
+++ b/tools/profiler/tests/browser/simple.html
@@ -0,0 +1,9 @@
+<!DOCTYPE html>
+<html lang="en">
+ <head>
+ <meta charset="utf-8"/>
+ </head>
+ <body>
+ Testing
+ </body>
+</html>
diff --git a/tools/profiler/tests/browser/single_frame.html b/tools/profiler/tests/browser/single_frame.html
new file mode 100644
index 0000000000..ebdfc41da2
--- /dev/null
+++ b/tools/profiler/tests/browser/single_frame.html
@@ -0,0 +1,10 @@
+<!DOCTYPE html>
+<html>
+<head>
+ <meta charset="utf-8">
+ <title>Single Frame</title>
+</head>
+<body>
+ Single Frame
+</body>
+</html>
diff --git a/tools/profiler/tests/chrome/chrome.ini b/tools/profiler/tests/chrome/chrome.ini
new file mode 100644
index 0000000000..7089b8fb8e
--- /dev/null
+++ b/tools/profiler/tests/chrome/chrome.ini
@@ -0,0 +1,8 @@
+[DEFAULT]
+skip-if = tsan # Bug 1804081
+support-files=profiler_test_utils.js
+
+[test_profile_worker_bug_1428076.html]
+skip-if = os == 'android' && processor == 'arm' # Bug 1541291
+[test_profile_worker.html]
+skip-if = os == 'android' && processor == 'arm' # Bug 1541291
diff --git a/tools/profiler/tests/chrome/profiler_test_utils.js b/tools/profiler/tests/chrome/profiler_test_utils.js
new file mode 100644
index 0000000000..d2e4499b34
--- /dev/null
+++ b/tools/profiler/tests/chrome/profiler_test_utils.js
@@ -0,0 +1,66 @@
+"use strict";
+
+(function () {
+ async function startProfiler(settings) {
+ let startPromise = Services.profiler.StartProfiler(
+ settings.entries,
+ settings.interval,
+ settings.features,
+ settings.threads,
+ 0,
+ settings.duration
+ );
+
+ info("Parent Profiler has started");
+
+ await startPromise;
+
+ info("Child profilers have started");
+ }
+
+ function getProfile() {
+ const profile = Services.profiler.getProfileData();
+ info(
+ "We got a profile, run the mochitest with `--keep-open true` to see the logged profile in the Web Console."
+ );
+
+ // Run the mochitest with `--keep-open true` to see the logged profile in the
+ // Web console.
+ console.log(profile);
+
+ return profile;
+ }
+
+ async function stopProfiler() {
+ let stopPromise = Services.profiler.StopProfiler();
+ info("Parent profiler has stopped");
+ await stopPromise;
+ info("Child profilers have stopped");
+ }
+
+ function end(error) {
+ if (error) {
+ ok(false, `We got an error: ${error}`);
+ } else {
+ ok(true, "We ran the whole process");
+ }
+ SimpleTest.finish();
+ }
+
+ async function runTest(settings, workload) {
+ SimpleTest.waitForExplicitFinish();
+ try {
+ await startProfiler(settings);
+ await workload();
+ await getProfile();
+ await stopProfiler();
+ await end();
+ } catch (e) {
+ // By catching and handling the error, we're being nice to mochitest
+ // runners: instead of waiting for the timeout, we fail right away.
+ await end(e);
+ }
+ }
+
+ window.runTest = runTest;
+})();
diff --git a/tools/profiler/tests/chrome/test_profile_worker.html b/tools/profiler/tests/chrome/test_profile_worker.html
new file mode 100644
index 0000000000..8e2bae7fbd
--- /dev/null
+++ b/tools/profiler/tests/chrome/test_profile_worker.html
@@ -0,0 +1,66 @@
+<!DOCTYPE HTML>
+<html>
+<!--
+https://bugzilla.mozilla.org/show_bug.cgi?id=1428076
+-->
+<head>
+ <meta charset="utf-8">
+ <title>Test for Bug 1428076</title>
+ <link rel="stylesheet" type="text/css" href="chrome://global/skin"/>
+ <link rel="stylesheet" type="text/css" href="chrome://mochikit/content/tests/SimpleTest/test.css"/>
+</head>
+<body>
+<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=1428076">Mozilla Bug 1428076</a>
+
+<script src="chrome://mochikit/content/tests/SimpleTest/SimpleTest.js"></script>
+<script type="application/javascript" src="profiler_test_utils.js"></script>
+<script type="application/javascript">
+/* globals runTest */
+
+"use strict";
+
+const settings = {
+ entries: 1000000, // 9MB
+ interval: 1, // ms
+ features: ["js", "stackwalk", "cpu"],
+ threads: ["GeckoMain", "Compositor", "Worker"], // most common combination
+};
+
+const workerCode = `
+ console.log('hello world');
+ setTimeout(() => postMessage('message from worker'), 50);
+`;
+
+function startWorker() {
+ // We use a Blob for the worker content to avoid an external JS file, and data
+ // URLs seem to be blocked in a chrome environment.
+ const workerContent = new Blob(
+ [ workerCode ],
+ { type: "application/javascript" }
+ );
+ const blobURL = URL.createObjectURL(workerContent);
+
+ // We start a worker and then terminate it right away to trigger our bug.
+ info("Starting the worker...");
+ const myWorker = new Worker(blobURL);
+ return { worker: myWorker, url: blobURL };
+}
+
+function workload() {
+ const { worker, url } = startWorker();
+
+ return new Promise(resolve => {
+ worker.onmessage = () => {
+ info("Got a message, terminating the worker.");
+ worker.terminate();
+ URL.revokeObjectURL(url);
+ resolve();
+ };
+ });
+}
+
+runTest(settings, workload);
+
+</script>
+</body>
+</html>
diff --git a/tools/profiler/tests/chrome/test_profile_worker_bug_1428076.html b/tools/profiler/tests/chrome/test_profile_worker_bug_1428076.html
new file mode 100644
index 0000000000..abe0e5748a
--- /dev/null
+++ b/tools/profiler/tests/chrome/test_profile_worker_bug_1428076.html
@@ -0,0 +1,58 @@
+<!DOCTYPE HTML>
+<html>
+<!--
+https://bugzilla.mozilla.org/show_bug.cgi?id=1428076
+-->
+<head>
+ <meta charset="utf-8">
+ <title>Test for Bug 1428076</title>
+ <link rel="stylesheet" type="text/css" href="chrome://global/skin"/>
+ <link rel="stylesheet" type="text/css" href="chrome://mochikit/content/tests/SimpleTest/test.css"/>
+</head>
+<body>
+<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=1428076">Mozilla Bug 1428076</a>
+
+<script src="chrome://mochikit/content/tests/SimpleTest/SimpleTest.js"></script>
+<script type="application/javascript" src="profiler_test_utils.js"></script>
+<script type="application/javascript">
+/** Test for Bug 1428076 **/
+
+/* globals runTest */
+
+"use strict";
+
+const settings = {
+ entries: 1000000, // 9MB
+ interval: 1, // ms
+ features: ["js", "stackwalk"],
+ threads: ["GeckoMain", "Compositor", "Worker"], // most common combination
+};
+
+function workload() {
+ // We use a Blob for the worker content to avoid an external JS file, and data
+ // URLs seem to be blocked in a chrome environment.
+ const workerContent = new Blob(
+ [ "console.log('hello world!')" ],
+ { type: "application/javascript" }
+ );
+ const blobURL = URL.createObjectURL(workerContent);
+
+ // We start a worker and then terminate it right away to trigger our bug.
+ info("Starting the worker, and terminate it right away.");
+ const myWorker = new Worker(blobURL);
+ myWorker.terminate();
+
+ URL.revokeObjectURL(blobURL);
+
+ // We're deferring some little time so that the worker has the time to be
+ // properly cleaned up and the profiler actually saves the worker data.
+ return new Promise(resolve => {
+ setTimeout(resolve, 50);
+ });
+}
+
+runTest(settings, workload);
+
+</script>
+</body>
+</html>
diff --git a/tools/profiler/tests/gtest/GeckoProfiler.cpp b/tools/profiler/tests/gtest/GeckoProfiler.cpp
new file mode 100644
index 0000000000..78456662f5
--- /dev/null
+++ b/tools/profiler/tests/gtest/GeckoProfiler.cpp
@@ -0,0 +1,5099 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+// This file tests a lot of the profiler_*() functions in GeckoProfiler.h.
+// Most of the tests just check that nothing untoward (e.g. crashes, deadlocks)
+// happens when calling these functions. They don't do much inspection of
+// profiler internals.
+
+#include "mozilla/ProfilerThreadPlatformData.h"
+#include "mozilla/ProfilerThreadRegistration.h"
+#include "mozilla/ProfilerThreadRegistrationInfo.h"
+#include "mozilla/ProfilerThreadRegistry.h"
+#include "mozilla/ProfilerUtils.h"
+#include "mozilla/ProgressLogger.h"
+#include "mozilla/UniquePtrExtensions.h"
+
+#include "nsIThread.h"
+#include "nsThreadUtils.h"
+#include "prthread.h"
+
+#include "gtest/gtest.h"
+#include "mozilla/gtest/MozAssertions.h"
+
+#include <thread>
+
+#if defined(_MSC_VER) || defined(__MINGW32__)
+# include <processthreadsapi.h>
+# include <realtimeapiset.h>
+#elif defined(__APPLE__)
+# include <mach/thread_act.h>
+#endif
+
+#ifdef XP_WIN
+#include "mozilla/WindowsVersion.h"
+#endif
+
+#ifdef MOZ_GECKO_PROFILER
+
+# include "GeckoProfiler.h"
+# include "mozilla/ProfilerMarkerTypes.h"
+# include "mozilla/ProfilerMarkers.h"
+# include "NetworkMarker.h"
+# include "platform.h"
+# include "ProfileBuffer.h"
+# include "ProfilerControl.h"
+
+# include "js/Initialization.h"
+# include "js/Printf.h"
+# include "jsapi.h"
+# include "json/json.h"
+# include "mozilla/Atomics.h"
+# include "mozilla/BlocksRingBuffer.h"
+# include "mozilla/DataMutex.h"
+# include "mozilla/ProfileBufferEntrySerializationGeckoExtensions.h"
+# include "mozilla/ProfileJSONWriter.h"
+# include "mozilla/ScopeExit.h"
+# include "mozilla/net/HttpBaseChannel.h"
+# include "nsIChannelEventSink.h"
+# include "nsIThread.h"
+# include "nsThreadUtils.h"
+
+# include <cstring>
+# include <set>
+
+#endif // MOZ_GECKO_PROFILER
+
+// Note: profiler_init() has already been called in XRE_main(), so we can't
+// test it here. Likewise for profiler_shutdown(), and AutoProfilerInit
+// (which is just an RAII wrapper for profiler_init() and profiler_shutdown()).
+
+using namespace mozilla;
+
+TEST(GeckoProfiler, ProfilerUtils)
+{
+ profiler_init_main_thread_id();
+
+ static_assert(std::is_same_v<decltype(profiler_current_process_id()),
+ ProfilerProcessId>);
+ static_assert(
+ std::is_same_v<decltype(profiler_current_process_id()),
+ decltype(baseprofiler::profiler_current_process_id())>);
+ ProfilerProcessId processId = profiler_current_process_id();
+ EXPECT_TRUE(processId.IsSpecified());
+ EXPECT_EQ(processId, baseprofiler::profiler_current_process_id());
+
+ static_assert(
+ std::is_same_v<decltype(profiler_current_thread_id()), ProfilerThreadId>);
+ static_assert(
+ std::is_same_v<decltype(profiler_current_thread_id()),
+ decltype(baseprofiler::profiler_current_thread_id())>);
+ EXPECT_EQ(profiler_current_thread_id(),
+ baseprofiler::profiler_current_thread_id());
+
+ ProfilerThreadId mainTestThreadId = profiler_current_thread_id();
+ EXPECT_TRUE(mainTestThreadId.IsSpecified());
+
+ ProfilerThreadId mainThreadId = profiler_main_thread_id();
+ EXPECT_TRUE(mainThreadId.IsSpecified());
+
+ EXPECT_EQ(mainThreadId, mainTestThreadId)
+ << "Test should run on the main thread";
+ EXPECT_TRUE(profiler_is_main_thread());
+
+ std::thread testThread([&]() {
+ EXPECT_EQ(profiler_current_process_id(), processId);
+
+ const ProfilerThreadId testThreadId = profiler_current_thread_id();
+ EXPECT_TRUE(testThreadId.IsSpecified());
+ EXPECT_NE(testThreadId, mainThreadId);
+ EXPECT_FALSE(profiler_is_main_thread());
+
+ EXPECT_EQ(baseprofiler::profiler_current_process_id(), processId);
+ EXPECT_EQ(baseprofiler::profiler_current_thread_id(), testThreadId);
+ EXPECT_EQ(baseprofiler::profiler_main_thread_id(), mainThreadId);
+ EXPECT_FALSE(baseprofiler::profiler_is_main_thread());
+ });
+ testThread.join();
+}
+
+TEST(GeckoProfiler, ThreadRegistrationInfo)
+{
+ profiler_init_main_thread_id();
+
+ TimeStamp ts = TimeStamp::Now();
+ {
+ profiler::ThreadRegistrationInfo trInfo{
+ "name", ProfilerThreadId::FromNumber(123), false, ts};
+ EXPECT_STREQ(trInfo.Name(), "name");
+ EXPECT_NE(trInfo.Name(), "name")
+ << "ThreadRegistrationInfo should keep its own copy of the name";
+ EXPECT_EQ(trInfo.RegisterTime(), ts);
+ EXPECT_EQ(trInfo.ThreadId(), ProfilerThreadId::FromNumber(123));
+ EXPECT_EQ(trInfo.IsMainThread(), false);
+ }
+
+ // Make sure the next timestamp will be different from `ts`.
+ while (TimeStamp::Now() == ts) {
+ }
+
+ {
+ profiler::ThreadRegistrationInfo trInfoHere{"Here"};
+ EXPECT_STREQ(trInfoHere.Name(), "Here");
+ EXPECT_NE(trInfoHere.Name(), "Here")
+ << "ThreadRegistrationInfo should keep its own copy of the name";
+ TimeStamp baseRegistrationTime =
+ baseprofiler::detail::GetThreadRegistrationTime();
+ if (baseRegistrationTime) {
+ EXPECT_EQ(trInfoHere.RegisterTime(), baseRegistrationTime);
+ } else {
+ EXPECT_GT(trInfoHere.RegisterTime(), ts);
+ }
+ EXPECT_EQ(trInfoHere.ThreadId(), profiler_current_thread_id());
+ EXPECT_EQ(trInfoHere.ThreadId(), profiler_main_thread_id())
+ << "Gtests are assumed to run on the main thread";
+ EXPECT_EQ(trInfoHere.IsMainThread(), true)
+ << "Gtests are assumed to run on the main thread";
+ }
+
+ {
+ // Sub-thread test.
+ // These will receive sub-thread data (to test move at thread end).
+ TimeStamp tsThread;
+ ProfilerThreadId threadThreadId;
+ UniquePtr<profiler::ThreadRegistrationInfo> trInfoThreadPtr;
+
+ std::thread testThread([&]() {
+ profiler::ThreadRegistrationInfo trInfoThread{"Thread"};
+ EXPECT_STREQ(trInfoThread.Name(), "Thread");
+ EXPECT_NE(trInfoThread.Name(), "Thread")
+ << "ThreadRegistrationInfo should keep its own copy of the name";
+ EXPECT_GT(trInfoThread.RegisterTime(), ts);
+ EXPECT_EQ(trInfoThread.ThreadId(), profiler_current_thread_id());
+ EXPECT_NE(trInfoThread.ThreadId(), profiler_main_thread_id());
+ EXPECT_EQ(trInfoThread.IsMainThread(), false);
+
+ tsThread = trInfoThread.RegisterTime();
+ threadThreadId = trInfoThread.ThreadId();
+ trInfoThreadPtr =
+ MakeUnique<profiler::ThreadRegistrationInfo>(std::move(trInfoThread));
+ });
+ testThread.join();
+
+ ASSERT_NE(trInfoThreadPtr, nullptr);
+ EXPECT_STREQ(trInfoThreadPtr->Name(), "Thread");
+ EXPECT_EQ(trInfoThreadPtr->RegisterTime(), tsThread);
+ EXPECT_EQ(trInfoThreadPtr->ThreadId(), threadThreadId);
+ EXPECT_EQ(trInfoThreadPtr->IsMainThread(), false)
+ << "Gtests are assumed to run on the main thread";
+ }
+}
+
+static constexpr ThreadProfilingFeatures scEachAndAnyThreadProfilingFeatures[] =
+ {ThreadProfilingFeatures::CPUUtilization, ThreadProfilingFeatures::Sampling,
+ ThreadProfilingFeatures::Markers, ThreadProfilingFeatures::Any};
+
+TEST(GeckoProfiler, ThreadProfilingFeaturesType)
+{
+ ASSERT_EQ(static_cast<uint32_t>(ThreadProfilingFeatures::Any), 1u + 2u + 4u)
+ << "This test assumes that there are 3 binary choices 1+2+4; "
+ "Is this test up to date?";
+
+ EXPECT_EQ(Combine(ThreadProfilingFeatures::CPUUtilization,
+ ThreadProfilingFeatures::Sampling,
+ ThreadProfilingFeatures::Markers),
+ ThreadProfilingFeatures::Any);
+
+ constexpr ThreadProfilingFeatures allThreadProfilingFeatures[] = {
+ ThreadProfilingFeatures::NotProfiled,
+ ThreadProfilingFeatures::CPUUtilization,
+ ThreadProfilingFeatures::Sampling, ThreadProfilingFeatures::Markers,
+ ThreadProfilingFeatures::Any};
+
+ for (ThreadProfilingFeatures f1 : allThreadProfilingFeatures) {
+ // Combine and Intersect are commutative.
+ for (ThreadProfilingFeatures f2 : allThreadProfilingFeatures) {
+ EXPECT_EQ(Combine(f1, f2), Combine(f2, f1));
+ EXPECT_EQ(Intersect(f1, f2), Intersect(f2, f1));
+ }
+
+ // Combine works like OR.
+ EXPECT_EQ(Combine(f1, f1), f1);
+ EXPECT_EQ(Combine(f1, f1, f1), f1);
+
+ // 'OR NotProfiled' doesn't change anything.
+ EXPECT_EQ(Combine(f1, ThreadProfilingFeatures::NotProfiled), f1);
+
+ // 'OR Any' makes Any.
+ EXPECT_EQ(Combine(f1, ThreadProfilingFeatures::Any),
+ ThreadProfilingFeatures::Any);
+
+ // Intersect works like AND.
+ EXPECT_EQ(Intersect(f1, f1), f1);
+ EXPECT_EQ(Intersect(f1, f1, f1), f1);
+
+ // 'AND NotProfiled' erases anything.
+ EXPECT_EQ(Intersect(f1, ThreadProfilingFeatures::NotProfiled),
+ ThreadProfilingFeatures::NotProfiled);
+
+ // 'AND Any' doesn't change anything.
+ EXPECT_EQ(Intersect(f1, ThreadProfilingFeatures::Any), f1);
+ }
+
+ for (ThreadProfilingFeatures f1 : scEachAndAnyThreadProfilingFeatures) {
+ EXPECT_TRUE(DoFeaturesIntersect(f1, f1));
+
+ // NotProfiled doesn't intersect with any feature.
+ EXPECT_FALSE(DoFeaturesIntersect(f1, ThreadProfilingFeatures::NotProfiled));
+
+ // Any intersects with any feature.
+ EXPECT_TRUE(DoFeaturesIntersect(f1, ThreadProfilingFeatures::Any));
+ }
+}
+
+static void TestConstUnlockedConstReader(
+ const profiler::ThreadRegistration::UnlockedConstReader& aData,
+ const TimeStamp& aBeforeRegistration, const TimeStamp& aAfterRegistration,
+ const void* aOnStackObject,
+ ProfilerThreadId aThreadId = profiler_current_thread_id()) {
+ EXPECT_STREQ(aData.Info().Name(), "Test thread");
+ EXPECT_GE(aData.Info().RegisterTime(), aBeforeRegistration);
+ EXPECT_LE(aData.Info().RegisterTime(), aAfterRegistration);
+ EXPECT_EQ(aData.Info().ThreadId(), aThreadId);
+ EXPECT_FALSE(aData.Info().IsMainThread());
+
+#if (defined(_MSC_VER) || defined(__MINGW32__)) && defined(MOZ_GECKO_PROFILER)
+ HANDLE threadHandle = aData.PlatformDataCRef().ProfiledThread();
+ EXPECT_NE(threadHandle, nullptr);
+ EXPECT_EQ(ProfilerThreadId::FromNumber(::GetThreadId(threadHandle)),
+ aThreadId);
+ // Test calling QueryThreadCycleTime, we cannot assume that it will always
+ // work, but at least it shouldn't crash.
+ ULONG64 cycles;
+ (void)QueryThreadCycleTime(threadHandle, &cycles);
+#elif defined(__APPLE__) && defined(MOZ_GECKO_PROFILER)
+ // Test calling thread_info, we cannot assume that it will always work, but at
+ // least it shouldn't crash.
+ thread_basic_info_data_t threadBasicInfo;
+ mach_msg_type_number_t basicCount = THREAD_BASIC_INFO_COUNT;
+ (void)thread_info(
+ aData.PlatformDataCRef().ProfiledThread(), THREAD_BASIC_INFO,
+ reinterpret_cast<thread_info_t>(&threadBasicInfo), &basicCount);
+#elif (defined(__linux__) || defined(__ANDROID__) || defined(__FreeBSD__)) && \
+ defined(MOZ_GECKO_PROFILER)
+ // Test calling GetClockId, we cannot assume that it will always work, but at
+ // least it shouldn't crash.
+ Maybe<clockid_t> maybeClockId = aData.PlatformDataCRef().GetClockId();
+ if (maybeClockId) {
+ // Test calling clock_gettime, we cannot assume that it will always work,
+ // but at least it shouldn't crash.
+ timespec ts;
+ (void)clock_gettime(*maybeClockId, &ts);
+ }
+#else
+ (void)aData.PlatformDataCRef();
+#endif
+
+ EXPECT_GE(aData.StackTop(), aOnStackObject)
+ << "StackTop should be at &onStackChar, or higher on some "
+ "platforms";
+};
+
+static void TestConstUnlockedConstReaderAndAtomicRW(
+ const profiler::ThreadRegistration::UnlockedConstReaderAndAtomicRW& aData,
+ const TimeStamp& aBeforeRegistration, const TimeStamp& aAfterRegistration,
+ const void* aOnStackObject,
+ ProfilerThreadId aThreadId = profiler_current_thread_id()) {
+ TestConstUnlockedConstReader(aData, aBeforeRegistration, aAfterRegistration,
+ aOnStackObject, aThreadId);
+
+ (void)aData.ProfilingStackCRef();
+
+ EXPECT_EQ(aData.ProfilingFeatures(), ThreadProfilingFeatures::NotProfiled);
+
+ EXPECT_FALSE(aData.IsSleeping());
+};
+
+static void TestUnlockedConstReaderAndAtomicRW(
+ profiler::ThreadRegistration::UnlockedConstReaderAndAtomicRW& aData,
+ const TimeStamp& aBeforeRegistration, const TimeStamp& aAfterRegistration,
+ const void* aOnStackObject,
+ ProfilerThreadId aThreadId = profiler_current_thread_id()) {
+ TestConstUnlockedConstReaderAndAtomicRW(aData, aBeforeRegistration,
+ aAfterRegistration, aOnStackObject,
+ aThreadId);
+
+ (void)aData.ProfilingStackRef();
+
+ EXPECT_FALSE(aData.IsSleeping());
+ aData.SetSleeping();
+ EXPECT_TRUE(aData.IsSleeping());
+ aData.SetAwake();
+ EXPECT_FALSE(aData.IsSleeping());
+
+ aData.ReinitializeOnResume();
+
+ EXPECT_FALSE(aData.CanDuplicateLastSampleDueToSleep());
+ EXPECT_FALSE(aData.CanDuplicateLastSampleDueToSleep());
+ aData.SetSleeping();
+ // After sleeping, the 2nd+ calls can duplicate.
+ EXPECT_FALSE(aData.CanDuplicateLastSampleDueToSleep());
+ EXPECT_TRUE(aData.CanDuplicateLastSampleDueToSleep());
+ EXPECT_TRUE(aData.CanDuplicateLastSampleDueToSleep());
+ aData.ReinitializeOnResume();
+ // After reinit (and sleeping), the 2nd+ calls can duplicate.
+ EXPECT_FALSE(aData.CanDuplicateLastSampleDueToSleep());
+ EXPECT_TRUE(aData.CanDuplicateLastSampleDueToSleep());
+ EXPECT_TRUE(aData.CanDuplicateLastSampleDueToSleep());
+ aData.SetAwake();
+ EXPECT_FALSE(aData.CanDuplicateLastSampleDueToSleep());
+ EXPECT_FALSE(aData.CanDuplicateLastSampleDueToSleep());
+};
+
+static void TestConstUnlockedRWForLockedProfiler(
+ const profiler::ThreadRegistration::UnlockedRWForLockedProfiler& aData,
+ const TimeStamp& aBeforeRegistration, const TimeStamp& aAfterRegistration,
+ const void* aOnStackObject,
+ ProfilerThreadId aThreadId = profiler_current_thread_id()) {
+ TestConstUnlockedConstReaderAndAtomicRW(aData, aBeforeRegistration,
+ aAfterRegistration, aOnStackObject,
+ aThreadId);
+
+ // We can't create a PSAutoLock here, so just verify that the call would
+ // compile and return the expected type.
+ static_assert(std::is_same_v<decltype(aData.GetProfiledThreadData(
+ std::declval<PSAutoLock>())),
+ const ProfiledThreadData*>);
+};
+
+static void TestConstUnlockedReaderAndAtomicRWOnThread(
+ const profiler::ThreadRegistration::UnlockedReaderAndAtomicRWOnThread&
+ aData,
+ const TimeStamp& aBeforeRegistration, const TimeStamp& aAfterRegistration,
+ const void* aOnStackObject,
+ ProfilerThreadId aThreadId = profiler_current_thread_id()) {
+ TestConstUnlockedRWForLockedProfiler(aData, aBeforeRegistration,
+ aAfterRegistration, aOnStackObject,
+ aThreadId);
+
+ EXPECT_EQ(aData.GetJSContext(), nullptr);
+};
+
+static void TestUnlockedRWForLockedProfiler(
+ profiler::ThreadRegistration::UnlockedRWForLockedProfiler& aData,
+ const TimeStamp& aBeforeRegistration, const TimeStamp& aAfterRegistration,
+ const void* aOnStackObject,
+ ProfilerThreadId aThreadId = profiler_current_thread_id()) {
+ TestConstUnlockedRWForLockedProfiler(aData, aBeforeRegistration,
+ aAfterRegistration, aOnStackObject,
+ aThreadId);
+ TestUnlockedConstReaderAndAtomicRW(aData, aBeforeRegistration,
+ aAfterRegistration, aOnStackObject,
+ aThreadId);
+
+ // No functions to test here.
+};
+
+static void TestUnlockedReaderAndAtomicRWOnThread(
+ profiler::ThreadRegistration::UnlockedReaderAndAtomicRWOnThread& aData,
+ const TimeStamp& aBeforeRegistration, const TimeStamp& aAfterRegistration,
+ const void* aOnStackObject,
+ ProfilerThreadId aThreadId = profiler_current_thread_id()) {
+ TestConstUnlockedReaderAndAtomicRWOnThread(aData, aBeforeRegistration,
+ aAfterRegistration, aOnStackObject,
+ aThreadId);
+ TestUnlockedRWForLockedProfiler(aData, aBeforeRegistration,
+ aAfterRegistration, aOnStackObject,
+ aThreadId);
+
+ // No functions to test here.
+};
+
+static void TestConstLockedRWFromAnyThread(
+ const profiler::ThreadRegistration::LockedRWFromAnyThread& aData,
+ const TimeStamp& aBeforeRegistration, const TimeStamp& aAfterRegistration,
+ const void* aOnStackObject,
+ ProfilerThreadId aThreadId = profiler_current_thread_id()) {
+ TestConstUnlockedReaderAndAtomicRWOnThread(aData, aBeforeRegistration,
+ aAfterRegistration, aOnStackObject,
+ aThreadId);
+
+ EXPECT_EQ(aData.GetJsFrameBuffer(), nullptr);
+ EXPECT_EQ(aData.GetEventTarget(), nullptr);
+};
+
+static void TestLockedRWFromAnyThread(
+ profiler::ThreadRegistration::LockedRWFromAnyThread& aData,
+ const TimeStamp& aBeforeRegistration, const TimeStamp& aAfterRegistration,
+ const void* aOnStackObject,
+ ProfilerThreadId aThreadId = profiler_current_thread_id()) {
+ TestConstLockedRWFromAnyThread(aData, aBeforeRegistration, aAfterRegistration,
+ aOnStackObject, aThreadId);
+ TestUnlockedReaderAndAtomicRWOnThread(aData, aBeforeRegistration,
+ aAfterRegistration, aOnStackObject,
+ aThreadId);
+
+ // We can't create a ProfiledThreadData nor PSAutoLock here, so just verify
+ // that the call would compile and return the expected type.
+ static_assert(std::is_same_v<decltype(aData.SetProfilingFeaturesAndData(
+ std::declval<ThreadProfilingFeatures>(),
+ std::declval<ProfiledThreadData*>(),
+ std::declval<PSAutoLock>())),
+ void>);
+
+ aData.ResetMainThread(nullptr);
+
+ TimeDuration delay = TimeDuration::FromSeconds(1);
+ TimeDuration running = TimeDuration::FromSeconds(1);
+ aData.GetRunningEventDelay(TimeStamp::Now(), delay, running);
+ EXPECT_TRUE(delay.IsZero());
+ EXPECT_TRUE(running.IsZero());
+
+ aData.StartJSSampling(123u);
+ aData.StopJSSampling();
+};
+
+static void TestConstLockedRWOnThread(
+ const profiler::ThreadRegistration::LockedRWOnThread& aData,
+ const TimeStamp& aBeforeRegistration, const TimeStamp& aAfterRegistration,
+ const void* aOnStackObject,
+ ProfilerThreadId aThreadId = profiler_current_thread_id()) {
+ TestConstLockedRWFromAnyThread(aData, aBeforeRegistration, aAfterRegistration,
+ aOnStackObject, aThreadId);
+
+ // No functions to test here.
+};
+
+static void TestLockedRWOnThread(
+ profiler::ThreadRegistration::LockedRWOnThread& aData,
+ const TimeStamp& aBeforeRegistration, const TimeStamp& aAfterRegistration,
+ const void* aOnStackObject,
+ ProfilerThreadId aThreadId = profiler_current_thread_id()) {
+ TestConstLockedRWOnThread(aData, aBeforeRegistration, aAfterRegistration,
+ aOnStackObject, aThreadId);
+ TestLockedRWFromAnyThread(aData, aBeforeRegistration, aAfterRegistration,
+ aOnStackObject, aThreadId);
+
+ // We don't want to really call SetJSContext here, so just verify that
+ // the call would compile and return the expected type.
+ static_assert(
+ std::is_same_v<decltype(aData.SetJSContext(std::declval<JSContext*>())),
+ void>);
+ aData.ClearJSContext();
+ aData.PollJSSampling();
+};
+
+TEST(GeckoProfiler, ThreadRegistration_DataAccess)
+{
+ using TR = profiler::ThreadRegistration;
+
+ profiler_init_main_thread_id();
+ ASSERT_TRUE(profiler_is_main_thread())
+ << "This test assumes it runs on the main thread";
+
+ // Note that the main thread could already be registered, so we work in a new
+ // thread to test an actual registration that we control.
+
+ std::thread testThread([&]() {
+ ASSERT_FALSE(TR::IsRegistered())
+ << "A new std::thread should not start registered";
+ EXPECT_FALSE(TR::GetOnThreadPtr());
+ EXPECT_FALSE(TR::WithOnThreadRefOr([&](auto) { return true; }, false));
+
+ char onStackChar;
+
+ TimeStamp beforeRegistration = TimeStamp::Now();
+ TR tr{"Test thread", &onStackChar};
+ TimeStamp afterRegistration = TimeStamp::Now();
+
+ ASSERT_TRUE(TR::IsRegistered());
+
+ // Note: This test will mostly be about checking the correct access to
+ // thread data, depending on how it's obtained. Not all the functionality
+ // related to that data is tested (e.g., because it involves JS or other
+ // external dependencies that would be difficult to control here.)
+
+ auto TestOnThreadRef = [&](TR::OnThreadRef aOnThreadRef) {
+ // To test const-qualified member functions.
+ const TR::OnThreadRef& onThreadCRef = aOnThreadRef;
+
+ // const UnlockedConstReader (always const)
+
+ TestConstUnlockedConstReader(onThreadCRef.UnlockedConstReaderCRef(),
+ beforeRegistration, afterRegistration,
+ &onStackChar);
+ onThreadCRef.WithUnlockedConstReader(
+ [&](const TR::UnlockedConstReader& aData) {
+ TestConstUnlockedConstReader(aData, beforeRegistration,
+ afterRegistration, &onStackChar);
+ });
+
+ // const UnlockedConstReaderAndAtomicRW
+
+ TestConstUnlockedConstReaderAndAtomicRW(
+ onThreadCRef.UnlockedConstReaderAndAtomicRWCRef(), beforeRegistration,
+ afterRegistration, &onStackChar);
+ onThreadCRef.WithUnlockedConstReaderAndAtomicRW(
+ [&](const TR::UnlockedConstReaderAndAtomicRW& aData) {
+ TestConstUnlockedConstReaderAndAtomicRW(
+ aData, beforeRegistration, afterRegistration, &onStackChar);
+ });
+
+ // non-const UnlockedConstReaderAndAtomicRW
+
+ TestUnlockedConstReaderAndAtomicRW(
+ aOnThreadRef.UnlockedConstReaderAndAtomicRWRef(), beforeRegistration,
+ afterRegistration, &onStackChar);
+ aOnThreadRef.WithUnlockedConstReaderAndAtomicRW(
+ [&](TR::UnlockedConstReaderAndAtomicRW& aData) {
+ TestUnlockedConstReaderAndAtomicRW(aData, beforeRegistration,
+ afterRegistration, &onStackChar);
+ });
+
+ // const UnlockedRWForLockedProfiler
+
+ TestConstUnlockedRWForLockedProfiler(
+ onThreadCRef.UnlockedRWForLockedProfilerCRef(), beforeRegistration,
+ afterRegistration, &onStackChar);
+ onThreadCRef.WithUnlockedRWForLockedProfiler(
+ [&](const TR::UnlockedRWForLockedProfiler& aData) {
+ TestConstUnlockedRWForLockedProfiler(
+ aData, beforeRegistration, afterRegistration, &onStackChar);
+ });
+
+ // non-const UnlockedRWForLockedProfiler
+
+ TestUnlockedRWForLockedProfiler(
+ aOnThreadRef.UnlockedRWForLockedProfilerRef(), beforeRegistration,
+ afterRegistration, &onStackChar);
+ aOnThreadRef.WithUnlockedRWForLockedProfiler(
+ [&](TR::UnlockedRWForLockedProfiler& aData) {
+ TestUnlockedRWForLockedProfiler(aData, beforeRegistration,
+ afterRegistration, &onStackChar);
+ });
+
+ // const UnlockedReaderAndAtomicRWOnThread
+
+ TestConstUnlockedReaderAndAtomicRWOnThread(
+ onThreadCRef.UnlockedReaderAndAtomicRWOnThreadCRef(),
+ beforeRegistration, afterRegistration, &onStackChar);
+ onThreadCRef.WithUnlockedReaderAndAtomicRWOnThread(
+ [&](const TR::UnlockedReaderAndAtomicRWOnThread& aData) {
+ TestConstUnlockedReaderAndAtomicRWOnThread(
+ aData, beforeRegistration, afterRegistration, &onStackChar);
+ });
+
+ // non-const UnlockedReaderAndAtomicRWOnThread
+
+ TestUnlockedReaderAndAtomicRWOnThread(
+ aOnThreadRef.UnlockedReaderAndAtomicRWOnThreadRef(),
+ beforeRegistration, afterRegistration, &onStackChar);
+ aOnThreadRef.WithUnlockedReaderAndAtomicRWOnThread(
+ [&](TR::UnlockedReaderAndAtomicRWOnThread& aData) {
+ TestUnlockedReaderAndAtomicRWOnThread(
+ aData, beforeRegistration, afterRegistration, &onStackChar);
+ });
+
+ // LockedRWFromAnyThread
+ // Note: It cannot directly be accessed on the thread, this will be
+ // tested through LockedRWOnThread.
+
+ // const LockedRWOnThread
+
+ EXPECT_FALSE(TR::IsDataMutexLockedOnCurrentThread());
+ {
+ TR::OnThreadRef::ConstRWOnThreadWithLock constRWOnThreadWithLock =
+ onThreadCRef.ConstLockedRWOnThread();
+ EXPECT_TRUE(TR::IsDataMutexLockedOnCurrentThread());
+ TestConstLockedRWOnThread(constRWOnThreadWithLock.DataCRef(),
+ beforeRegistration, afterRegistration,
+ &onStackChar);
+ }
+ EXPECT_FALSE(TR::IsDataMutexLockedOnCurrentThread());
+ onThreadCRef.WithConstLockedRWOnThread(
+ [&](const TR::LockedRWOnThread& aData) {
+ EXPECT_TRUE(TR::IsDataMutexLockedOnCurrentThread());
+ TestConstLockedRWOnThread(aData, beforeRegistration,
+ afterRegistration, &onStackChar);
+ });
+ EXPECT_FALSE(TR::IsDataMutexLockedOnCurrentThread());
+
+ // non-const LockedRWOnThread
+
+ EXPECT_FALSE(TR::IsDataMutexLockedOnCurrentThread());
+ {
+ TR::OnThreadRef::RWOnThreadWithLock rwOnThreadWithLock =
+ aOnThreadRef.GetLockedRWOnThread();
+ EXPECT_TRUE(TR::IsDataMutexLockedOnCurrentThread());
+ TestConstLockedRWOnThread(rwOnThreadWithLock.DataCRef(),
+ beforeRegistration, afterRegistration,
+ &onStackChar);
+ TestLockedRWOnThread(rwOnThreadWithLock.DataRef(), beforeRegistration,
+ afterRegistration, &onStackChar);
+ }
+ EXPECT_FALSE(TR::IsDataMutexLockedOnCurrentThread());
+ aOnThreadRef.WithLockedRWOnThread([&](TR::LockedRWOnThread& aData) {
+ EXPECT_TRUE(TR::IsDataMutexLockedOnCurrentThread());
+ TestLockedRWOnThread(aData, beforeRegistration, afterRegistration,
+ &onStackChar);
+ });
+ EXPECT_FALSE(TR::IsDataMutexLockedOnCurrentThread());
+ };
+
+ TR::OnThreadPtr onThreadPtr = TR::GetOnThreadPtr();
+ ASSERT_TRUE(onThreadPtr);
+ TestOnThreadRef(*onThreadPtr);
+
+ TR::WithOnThreadRef(
+ [&](TR::OnThreadRef aOnThreadRef) { TestOnThreadRef(aOnThreadRef); });
+
+ EXPECT_TRUE(TR::WithOnThreadRefOr(
+ [&](TR::OnThreadRef aOnThreadRef) {
+ TestOnThreadRef(aOnThreadRef);
+ return true;
+ },
+ false));
+ });
+ testThread.join();
+}
+
+// Thread name if registered, nullptr otherwise.
+static const char* GetThreadName() {
+ return profiler::ThreadRegistration::WithOnThreadRefOr(
+ [](profiler::ThreadRegistration::OnThreadRef onThreadRef) {
+ return onThreadRef.WithUnlockedConstReader(
+ [](const profiler::ThreadRegistration::UnlockedConstReader& aData) {
+ return aData.Info().Name();
+ });
+ },
+ nullptr);
+}
+
+// Get the thread name, as registered in the PRThread, nullptr on failure.
+static const char* GetPRThreadName() {
+ nsIThread* nsThread = NS_GetCurrentThread();
+ if (!nsThread) {
+ return nullptr;
+ }
+ PRThread* prThread = nullptr;
+ if (NS_FAILED(nsThread->GetPRThread(&prThread))) {
+ return nullptr;
+ }
+ if (!prThread) {
+ return nullptr;
+ }
+ return PR_GetThreadName(prThread);
+}
+
+TEST(GeckoProfiler, ThreadRegistration_MainThreadName)
+{
+ EXPECT_TRUE(profiler::ThreadRegistration::IsRegistered());
+ EXPECT_STREQ(GetThreadName(), "GeckoMain");
+
+ // Check that the real thread name (outside the profiler) is *not* GeckoMain.
+ EXPECT_STRNE(GetPRThreadName(), "GeckoMain");
+}
+
+TEST(GeckoProfiler, ThreadRegistration_NestedRegistrations)
+{
+ using TR = profiler::ThreadRegistration;
+
+ profiler_init_main_thread_id();
+ ASSERT_TRUE(profiler_is_main_thread())
+ << "This test assumes it runs on the main thread";
+
+ // Note that the main thread could already be registered, so we work in a new
+ // thread to test actual registrations that we control.
+
+ std::thread testThread([&]() {
+ ASSERT_FALSE(TR::IsRegistered())
+ << "A new std::thread should not start registered";
+
+ char onStackChar;
+
+ // Blocks {} are mostly for clarity, but some control on-stack registration
+ // lifetimes.
+
+ // On-stack registration.
+ {
+ TR rt{"Test thread #1", &onStackChar};
+ ASSERT_TRUE(TR::IsRegistered());
+ EXPECT_STREQ(GetThreadName(), "Test thread #1");
+ EXPECT_STREQ(GetPRThreadName(), "Test thread #1");
+ }
+ ASSERT_FALSE(TR::IsRegistered());
+
+ // Off-stack registration.
+ {
+ TR::RegisterThread("Test thread #2", &onStackChar);
+ ASSERT_TRUE(TR::IsRegistered());
+ EXPECT_STREQ(GetThreadName(), "Test thread #2");
+ EXPECT_STREQ(GetPRThreadName(), "Test thread #2");
+
+ TR::UnregisterThread();
+ ASSERT_FALSE(TR::IsRegistered());
+ }
+
+ // Extra un-registration should be ignored.
+ TR::UnregisterThread();
+ ASSERT_FALSE(TR::IsRegistered());
+
+ // Nested on-stack.
+ {
+ TR rt2{"Test thread #3", &onStackChar};
+ ASSERT_TRUE(TR::IsRegistered());
+ EXPECT_STREQ(GetThreadName(), "Test thread #3");
+ EXPECT_STREQ(GetPRThreadName(), "Test thread #3");
+
+ {
+ TR rt3{"Test thread #4", &onStackChar};
+ ASSERT_TRUE(TR::IsRegistered());
+ EXPECT_STREQ(GetThreadName(), "Test thread #3")
+ << "Nested registration shouldn't change the name";
+ EXPECT_STREQ(GetPRThreadName(), "Test thread #3")
+ << "Nested registration shouldn't change the PRThread name";
+ }
+ ASSERT_TRUE(TR::IsRegistered())
+ << "Thread should still be registered after nested un-registration";
+ EXPECT_STREQ(GetThreadName(), "Test thread #3")
+ << "Thread should still be registered after nested un-registration";
+ EXPECT_STREQ(GetPRThreadName(), "Test thread #3");
+ }
+ ASSERT_FALSE(TR::IsRegistered());
+
+ // Nested off-stack.
+ {
+ TR::RegisterThread("Test thread #5", &onStackChar);
+ ASSERT_TRUE(TR::IsRegistered());
+ EXPECT_STREQ(GetThreadName(), "Test thread #5");
+ EXPECT_STREQ(GetPRThreadName(), "Test thread #5");
+
+ {
+ TR::RegisterThread("Test thread #6", &onStackChar);
+ ASSERT_TRUE(TR::IsRegistered());
+ EXPECT_STREQ(GetThreadName(), "Test thread #5")
+ << "Nested registration shouldn't change the name";
+ EXPECT_STREQ(GetPRThreadName(), "Test thread #5")
+ << "Nested registration shouldn't change the PRThread name";
+
+ TR::UnregisterThread();
+ ASSERT_TRUE(TR::IsRegistered())
+ << "Thread should still be registered after nested un-registration";
+ EXPECT_STREQ(GetThreadName(), "Test thread #5")
+ << "Thread should still be registered after nested un-registration";
+ EXPECT_STREQ(GetPRThreadName(), "Test thread #5");
+ }
+
+ TR::UnregisterThread();
+ ASSERT_FALSE(TR::IsRegistered());
+ }
+
+ // Nested on- and off-stack.
+ {
+ TR rt2{"Test thread #7", &onStackChar};
+ ASSERT_TRUE(TR::IsRegistered());
+ EXPECT_STREQ(GetThreadName(), "Test thread #7");
+ EXPECT_STREQ(GetPRThreadName(), "Test thread #7");
+
+ {
+ TR::RegisterThread("Test thread #8", &onStackChar);
+ ASSERT_TRUE(TR::IsRegistered());
+ EXPECT_STREQ(GetThreadName(), "Test thread #7")
+ << "Nested registration shouldn't change the name";
+ EXPECT_STREQ(GetPRThreadName(), "Test thread #7")
+ << "Nested registration shouldn't change the PRThread name";
+
+ TR::UnregisterThread();
+ ASSERT_TRUE(TR::IsRegistered())
+ << "Thread should still be registered after nested un-registration";
+ EXPECT_STREQ(GetThreadName(), "Test thread #7")
+ << "Thread should still be registered after nested un-registration";
+ EXPECT_STREQ(GetPRThreadName(), "Test thread #7");
+ }
+ }
+ ASSERT_FALSE(TR::IsRegistered());
+
+ // Nested off- and on-stack.
+ {
+ TR::RegisterThread("Test thread #9", &onStackChar);
+ ASSERT_TRUE(TR::IsRegistered());
+ EXPECT_STREQ(GetThreadName(), "Test thread #9");
+ EXPECT_STREQ(GetPRThreadName(), "Test thread #9");
+
+ {
+ TR rt3{"Test thread #10", &onStackChar};
+ ASSERT_TRUE(TR::IsRegistered());
+ EXPECT_STREQ(GetThreadName(), "Test thread #9")
+ << "Nested registration shouldn't change the name";
+ EXPECT_STREQ(GetPRThreadName(), "Test thread #9")
+ << "Nested registration shouldn't change the PRThread name";
+ }
+ ASSERT_TRUE(TR::IsRegistered())
+ << "Thread should still be registered after nested un-registration";
+ EXPECT_STREQ(GetThreadName(), "Test thread #9")
+ << "Thread should still be registered after nested un-registration";
+ EXPECT_STREQ(GetPRThreadName(), "Test thread #9");
+
+ TR::UnregisterThread();
+ ASSERT_FALSE(TR::IsRegistered());
+ }
+
+ // Excess UnregisterThread with on-stack TR.
+ {
+ TR rt2{"Test thread #11", &onStackChar};
+ ASSERT_TRUE(TR::IsRegistered());
+ EXPECT_STREQ(GetThreadName(), "Test thread #11");
+ EXPECT_STREQ(GetPRThreadName(), "Test thread #11");
+
+ TR::UnregisterThread();
+ ASSERT_TRUE(TR::IsRegistered())
+ << "On-stack thread should still be registered after off-stack "
+ "un-registration";
+ EXPECT_STREQ(GetThreadName(), "Test thread #11")
+ << "On-stack thread should still be registered after off-stack "
+ "un-registration";
+ EXPECT_STREQ(GetPRThreadName(), "Test thread #11");
+ }
+ ASSERT_FALSE(TR::IsRegistered());
+
+ // Excess on-thread TR destruction with already-unregistered root off-thread
+ // registration.
+ {
+ TR::RegisterThread("Test thread #12", &onStackChar);
+ ASSERT_TRUE(TR::IsRegistered());
+ EXPECT_STREQ(GetThreadName(), "Test thread #12");
+ EXPECT_STREQ(GetPRThreadName(), "Test thread #12");
+
+ {
+ TR rt3{"Test thread #13", &onStackChar};
+ ASSERT_TRUE(TR::IsRegistered());
+ EXPECT_STREQ(GetThreadName(), "Test thread #12")
+ << "Nested registration shouldn't change the name";
+ EXPECT_STREQ(GetPRThreadName(), "Test thread #12")
+ << "Nested registration shouldn't change the PRThread name";
+
+ // Note that we unregister the root registration, while nested `rt3` is
+ // still alive.
+ TR::UnregisterThread();
+ ASSERT_FALSE(TR::IsRegistered())
+ << "UnregisterThread() of the root RegisterThread() should always work";
+
+ // At this end of this block, `rt3` will be destroyed, but nothing
+ // should happen.
+ }
+ ASSERT_FALSE(TR::IsRegistered());
+ }
+
+ ASSERT_FALSE(TR::IsRegistered());
+ });
+ testThread.join();
+}
+
+TEST(GeckoProfiler, ThreadRegistry_DataAccess)
+{
+ using TR = profiler::ThreadRegistration;
+ using TRy = profiler::ThreadRegistry;
+
+ profiler_init_main_thread_id();
+ ASSERT_TRUE(profiler_is_main_thread())
+ << "This test assumes it runs on the main thread";
+
+ // Note that the main thread could already be registered, so we work in a new
+ // thread to test an actual registration that we control.
+
+ std::thread testThread([&]() {
+ ASSERT_FALSE(TR::IsRegistered())
+ << "A new std::thread should not start registered";
+ EXPECT_FALSE(TR::GetOnThreadPtr());
+ EXPECT_FALSE(TR::WithOnThreadRefOr([&](auto) { return true; }, false));
+
+ char onStackChar;
+
+ TimeStamp beforeRegistration = TimeStamp::Now();
+ TR tr{"Test thread", &onStackChar};
+ TimeStamp afterRegistration = TimeStamp::Now();
+
+ ASSERT_TRUE(TR::IsRegistered());
+
+ // Note: This test will mostly be about checking the correct access to
+ // thread data, depending on how it's obtained. Not all the functionality
+ // related to that data is tested (e.g., because it involves JS or other
+ // external dependencies that would be difficult to control here.)
+
+ const ProfilerThreadId testThreadId = profiler_current_thread_id();
+
+ auto testThroughRegistry = [&]() {
+ auto TestOffThreadRef = [&](TRy::OffThreadRef aOffThreadRef) {
+ // To test const-qualified member functions.
+ const TRy::OffThreadRef& offThreadCRef = aOffThreadRef;
+
+ // const UnlockedConstReader (always const)
+
+ TestConstUnlockedConstReader(offThreadCRef.UnlockedConstReaderCRef(),
+ beforeRegistration, afterRegistration,
+ &onStackChar, testThreadId);
+ offThreadCRef.WithUnlockedConstReader(
+ [&](const TR::UnlockedConstReader& aData) {
+ TestConstUnlockedConstReader(aData, beforeRegistration,
+ afterRegistration, &onStackChar,
+ testThreadId);
+ });
+
+ // const UnlockedConstReaderAndAtomicRW
+
+ TestConstUnlockedConstReaderAndAtomicRW(
+ offThreadCRef.UnlockedConstReaderAndAtomicRWCRef(),
+ beforeRegistration, afterRegistration, &onStackChar, testThreadId);
+ offThreadCRef.WithUnlockedConstReaderAndAtomicRW(
+ [&](const TR::UnlockedConstReaderAndAtomicRW& aData) {
+ TestConstUnlockedConstReaderAndAtomicRW(
+ aData, beforeRegistration, afterRegistration, &onStackChar,
+ testThreadId);
+ });
+
+ // non-const UnlockedConstReaderAndAtomicRW
+
+ TestUnlockedConstReaderAndAtomicRW(
+ aOffThreadRef.UnlockedConstReaderAndAtomicRWRef(),
+ beforeRegistration, afterRegistration, &onStackChar, testThreadId);
+ aOffThreadRef.WithUnlockedConstReaderAndAtomicRW(
+ [&](TR::UnlockedConstReaderAndAtomicRW& aData) {
+ TestUnlockedConstReaderAndAtomicRW(aData, beforeRegistration,
+ afterRegistration,
+ &onStackChar, testThreadId);
+ });
+
+ // const UnlockedRWForLockedProfiler
+
+ TestConstUnlockedRWForLockedProfiler(
+ offThreadCRef.UnlockedRWForLockedProfilerCRef(), beforeRegistration,
+ afterRegistration, &onStackChar, testThreadId);
+ offThreadCRef.WithUnlockedRWForLockedProfiler(
+ [&](const TR::UnlockedRWForLockedProfiler& aData) {
+ TestConstUnlockedRWForLockedProfiler(aData, beforeRegistration,
+ afterRegistration,
+ &onStackChar, testThreadId);
+ });
+
+ // non-const UnlockedRWForLockedProfiler
+
+ TestUnlockedRWForLockedProfiler(
+ aOffThreadRef.UnlockedRWForLockedProfilerRef(), beforeRegistration,
+ afterRegistration, &onStackChar, testThreadId);
+ aOffThreadRef.WithUnlockedRWForLockedProfiler(
+ [&](TR::UnlockedRWForLockedProfiler& aData) {
+ TestUnlockedRWForLockedProfiler(aData, beforeRegistration,
+ afterRegistration, &onStackChar,
+ testThreadId);
+ });
+
+ // UnlockedReaderAndAtomicRWOnThread
+ // Note: It cannot directly be accessed off the thread, this will be
+ // tested through LockedRWFromAnyThread.
+
+ // const LockedRWFromAnyThread
+
+ EXPECT_FALSE(TR::IsDataMutexLockedOnCurrentThread());
+ {
+ TRy::OffThreadRef::ConstRWFromAnyThreadWithLock
+ constRWFromAnyThreadWithLock =
+ offThreadCRef.ConstLockedRWFromAnyThread();
+ if (profiler_current_thread_id() == testThreadId) {
+ EXPECT_TRUE(TR::IsDataMutexLockedOnCurrentThread());
+ }
+ TestConstLockedRWFromAnyThread(
+ constRWFromAnyThreadWithLock.DataCRef(), beforeRegistration,
+ afterRegistration, &onStackChar, testThreadId);
+ }
+ EXPECT_FALSE(TR::IsDataMutexLockedOnCurrentThread());
+ offThreadCRef.WithConstLockedRWFromAnyThread(
+ [&](const TR::LockedRWFromAnyThread& aData) {
+ if (profiler_current_thread_id() == testThreadId) {
+ EXPECT_TRUE(TR::IsDataMutexLockedOnCurrentThread());
+ }
+ TestConstLockedRWFromAnyThread(aData, beforeRegistration,
+ afterRegistration, &onStackChar,
+ testThreadId);
+ });
+ EXPECT_FALSE(TR::IsDataMutexLockedOnCurrentThread());
+
+ // non-const LockedRWFromAnyThread
+
+ EXPECT_FALSE(TR::IsDataMutexLockedOnCurrentThread());
+ {
+ TRy::OffThreadRef::RWFromAnyThreadWithLock rwFromAnyThreadWithLock =
+ aOffThreadRef.GetLockedRWFromAnyThread();
+ if (profiler_current_thread_id() == testThreadId) {
+ EXPECT_TRUE(TR::IsDataMutexLockedOnCurrentThread());
+ }
+ TestLockedRWFromAnyThread(rwFromAnyThreadWithLock.DataRef(),
+ beforeRegistration, afterRegistration,
+ &onStackChar, testThreadId);
+ }
+ EXPECT_FALSE(TR::IsDataMutexLockedOnCurrentThread());
+ aOffThreadRef.WithLockedRWFromAnyThread(
+ [&](TR::LockedRWFromAnyThread& aData) {
+ if (profiler_current_thread_id() == testThreadId) {
+ EXPECT_TRUE(TR::IsDataMutexLockedOnCurrentThread());
+ }
+ TestLockedRWFromAnyThread(aData, beforeRegistration,
+ afterRegistration, &onStackChar,
+ testThreadId);
+ });
+ EXPECT_FALSE(TR::IsDataMutexLockedOnCurrentThread());
+
+ // LockedRWOnThread
+ // Note: It can never be accessed off the thread.
+ };
+
+ int ranTest = 0;
+ TRy::WithOffThreadRef(testThreadId, [&](TRy::OffThreadRef aOffThreadRef) {
+ TestOffThreadRef(aOffThreadRef);
+ ++ranTest;
+ });
+ EXPECT_EQ(ranTest, 1);
+
+ EXPECT_TRUE(TRy::WithOffThreadRefOr(
+ testThreadId,
+ [&](TRy::OffThreadRef aOffThreadRef) {
+ TestOffThreadRef(aOffThreadRef);
+ return true;
+ },
+ false));
+
+ ranTest = 0;
+ EXPECT_FALSE(TRy::IsRegistryMutexLockedOnCurrentThread());
+ for (TRy::OffThreadRef offThreadRef : TRy::LockedRegistry{}) {
+ EXPECT_TRUE(TRy::IsRegistryMutexLockedOnCurrentThread() ||
+ !TR::IsRegistered());
+ if (offThreadRef.UnlockedConstReaderCRef().Info().ThreadId() ==
+ testThreadId) {
+ TestOffThreadRef(offThreadRef);
+ ++ranTest;
+ }
+ }
+ EXPECT_EQ(ranTest, 1);
+ EXPECT_FALSE(TRy::IsRegistryMutexLockedOnCurrentThread());
+
+ {
+ ranTest = 0;
+ EXPECT_FALSE(TRy::IsRegistryMutexLockedOnCurrentThread());
+ TRy::LockedRegistry lockedRegistry{};
+ EXPECT_TRUE(TRy::IsRegistryMutexLockedOnCurrentThread() ||
+ !TR::IsRegistered());
+ for (TRy::OffThreadRef offThreadRef : lockedRegistry) {
+ if (offThreadRef.UnlockedConstReaderCRef().Info().ThreadId() ==
+ testThreadId) {
+ TestOffThreadRef(offThreadRef);
+ ++ranTest;
+ }
+ }
+ EXPECT_EQ(ranTest, 1);
+ }
+ EXPECT_FALSE(TRy::IsRegistryMutexLockedOnCurrentThread());
+ };
+
+ // Test on the current thread.
+ testThroughRegistry();
+
+ // Test from another thread.
+ std::thread otherThread([&]() {
+ ASSERT_NE(profiler_current_thread_id(), testThreadId);
+ testThroughRegistry();
+
+ // Test that this unregistered thread is really not registered.
+ int ranTest = 0;
+ TRy::WithOffThreadRef(
+ profiler_current_thread_id(),
+ [&](TRy::OffThreadRef aOffThreadRef) { ++ranTest; });
+ EXPECT_EQ(ranTest, 0);
+
+ EXPECT_FALSE(TRy::WithOffThreadRefOr(
+ profiler_current_thread_id(),
+ [&](TRy::OffThreadRef aOffThreadRef) {
+ ++ranTest;
+ return true;
+ },
+ false));
+ EXPECT_EQ(ranTest, 0);
+ });
+ otherThread.join();
+ });
+ testThread.join();
+}
+
+TEST(GeckoProfiler, ThreadRegistration_RegistrationEdgeCases)
+{
+ using TR = profiler::ThreadRegistration;
+ using TRy = profiler::ThreadRegistry;
+
+ profiler_init_main_thread_id();
+ ASSERT_TRUE(profiler_is_main_thread())
+ << "This test assumes it runs on the main thread";
+
+ // Note that the main thread could already be registered, so we work in a new
+ // thread to test an actual registration that we control.
+
+ int registrationCount = 0;
+ int otherThreadLoops = 0;
+ int otherThreadReads = 0;
+
+ // This thread will register and unregister in a loop, with some pauses.
+ // Another thread will attempty to access the test thread, and lock its data.
+ // The main goal is to check edges cases around (un)registrations.
+ std::thread testThread([&]() {
+ const ProfilerThreadId testThreadId = profiler_current_thread_id();
+
+ const TimeStamp endTestAt = TimeStamp::Now() + TimeDuration::FromSeconds(1);
+
+ std::thread otherThread([&]() {
+ // Initial sleep so that testThread can start its loop.
+ PR_Sleep(PR_MillisecondsToInterval(1));
+
+ while (TimeStamp::Now() < endTestAt) {
+ ++otherThreadLoops;
+
+ TRy::WithOffThreadRef(testThreadId, [&](TRy::OffThreadRef
+ aOffThreadRef) {
+ if (otherThreadLoops % 1000 == 0) {
+ PR_Sleep(PR_MillisecondsToInterval(1));
+ }
+ TRy::OffThreadRef::RWFromAnyThreadWithLock rwFromAnyThreadWithLock =
+ aOffThreadRef.GetLockedRWFromAnyThread();
+ ++otherThreadReads;
+ if (otherThreadReads % 1000 == 0) {
+ PR_Sleep(PR_MillisecondsToInterval(1));
+ }
+ });
+ }
+ });
+
+ while (TimeStamp::Now() < endTestAt) {
+ ASSERT_FALSE(TR::IsRegistered())
+ << "A new std::thread should not start registered";
+ EXPECT_FALSE(TR::GetOnThreadPtr());
+ EXPECT_FALSE(TR::WithOnThreadRefOr([&](auto) { return true; }, false));
+
+ char onStackChar;
+
+ TR tr{"Test thread", &onStackChar};
+ ++registrationCount;
+
+ ASSERT_TRUE(TR::IsRegistered());
+
+ int ranTest = 0;
+ TRy::WithOffThreadRef(testThreadId, [&](TRy::OffThreadRef aOffThreadRef) {
+ if (registrationCount % 2000 == 0) {
+ PR_Sleep(PR_MillisecondsToInterval(1));
+ }
+ ++ranTest;
+ });
+ EXPECT_EQ(ranTest, 1);
+
+ if (registrationCount % 1000 == 0) {
+ PR_Sleep(PR_MillisecondsToInterval(1));
+ }
+ }
+
+ otherThread.join();
+ });
+
+ testThread.join();
+
+ // It's difficult to guess what these numbers should be, but they definitely
+ // should be non-zero. The main goal was to test that nothing goes wrong.
+ EXPECT_GT(registrationCount, 0);
+ EXPECT_GT(otherThreadLoops, 0);
+ EXPECT_GT(otherThreadReads, 0);
+}
+
+#ifdef MOZ_GECKO_PROFILER
+
+TEST(BaseProfiler, BlocksRingBuffer)
+{
+ constexpr uint32_t MBSize = 256;
+ uint8_t buffer[MBSize * 3];
+ for (size_t i = 0; i < MBSize * 3; ++i) {
+ buffer[i] = uint8_t('A' + i);
+ }
+ BlocksRingBuffer rb(BlocksRingBuffer::ThreadSafety::WithMutex,
+ &buffer[MBSize], MakePowerOfTwo32<MBSize>());
+
+ {
+ nsCString cs("nsCString"_ns);
+ nsString s(u"nsString"_ns);
+ nsAutoCString acs("nsAutoCString"_ns);
+ nsAutoString as(u"nsAutoString"_ns);
+ nsAutoCStringN<8> acs8("nsAutoCStringN"_ns);
+ nsAutoStringN<8> as8(u"nsAutoStringN"_ns);
+ JS::UniqueChars jsuc = JS_smprintf("%s", "JS::UniqueChars");
+
+ rb.PutObjects(cs, s, acs, as, acs8, as8, jsuc);
+ }
+
+ rb.ReadEach([](ProfileBufferEntryReader& aER) {
+ ASSERT_EQ(aER.ReadObject<nsCString>(), "nsCString"_ns);
+ ASSERT_EQ(aER.ReadObject<nsString>(), u"nsString"_ns);
+ ASSERT_EQ(aER.ReadObject<nsAutoCString>(), "nsAutoCString"_ns);
+ ASSERT_EQ(aER.ReadObject<nsAutoString>(), u"nsAutoString"_ns);
+ ASSERT_EQ(aER.ReadObject<nsAutoCStringN<8>>(), "nsAutoCStringN"_ns);
+ ASSERT_EQ(aER.ReadObject<nsAutoStringN<8>>(), u"nsAutoStringN"_ns);
+ auto jsuc2 = aER.ReadObject<JS::UniqueChars>();
+ ASSERT_TRUE(!!jsuc2);
+ ASSERT_TRUE(strcmp(jsuc2.get(), "JS::UniqueChars") == 0);
+ });
+
+ // Everything around the sub-buffer should be unchanged.
+ for (size_t i = 0; i < MBSize; ++i) {
+ ASSERT_EQ(buffer[i], uint8_t('A' + i));
+ }
+ for (size_t i = MBSize * 2; i < MBSize * 3; ++i) {
+ ASSERT_EQ(buffer[i], uint8_t('A' + i));
+ }
+}
+
+// Common JSON checks.
+
+// Check that the given JSON string include no JSON whitespace characters
+// (excluding those in property names and strings).
+void JSONWhitespaceCheck(const char* aOutput) {
+ ASSERT_NE(aOutput, nullptr);
+
+ enum class State { Data, String, StringEscaped };
+ State state = State::Data;
+ size_t length = 0;
+ size_t whitespaces = 0;
+ for (const char* p = aOutput; *p != '\0'; ++p) {
+ ++length;
+ const char c = *p;
+
+ switch (state) {
+ case State::Data:
+ if (c == '\n' || c == '\r' || c == ' ' || c == '\t') {
+ ++whitespaces;
+ } else if (c == '"') {
+ state = State::String;
+ }
+ break;
+
+ case State::String:
+ if (c == '"') {
+ state = State::Data;
+ } else if (c == '\\') {
+ state = State::StringEscaped;
+ }
+ break;
+
+ case State::StringEscaped:
+ state = State::String;
+ break;
+ }
+ }
+
+ EXPECT_EQ(whitespaces, 0u);
+ EXPECT_GT(length, 0u);
+}
+
+// Does the GETTER return a non-null TYPE? (Non-critical)
+# define EXPECT_HAS_JSON(GETTER, TYPE) \
+ do { \
+ if ((GETTER).isNull()) { \
+ EXPECT_FALSE((GETTER).isNull()) \
+ << #GETTER " doesn't exist or is null"; \
+ } else if (!(GETTER).is##TYPE()) { \
+ EXPECT_TRUE((GETTER).is##TYPE()) \
+ << #GETTER " didn't return type " #TYPE; \
+ } \
+ } while (false)
+
+// Does the GETTER return a non-null TYPE? (Critical)
+# define ASSERT_HAS_JSON(GETTER, TYPE) \
+ do { \
+ ASSERT_FALSE((GETTER).isNull()); \
+ ASSERT_TRUE((GETTER).is##TYPE()); \
+ } while (false)
+
+// Does the GETTER return a non-null TYPE? (Critical)
+// If yes, store the reference to Json::Value into VARIABLE.
+# define GET_JSON(VARIABLE, GETTER, TYPE) \
+ ASSERT_HAS_JSON(GETTER, TYPE); \
+ const Json::Value& VARIABLE = (GETTER)
+
+// Does the GETTER return a non-null TYPE? (Critical)
+// If yes, store the value as `const TYPE` into VARIABLE.
+# define GET_JSON_VALUE(VARIABLE, GETTER, TYPE) \
+ ASSERT_HAS_JSON(GETTER, TYPE); \
+ const auto VARIABLE = (GETTER).as##TYPE()
+
+// Non-const GET_JSON_VALUE.
+# define GET_JSON_MUTABLE_VALUE(VARIABLE, GETTER, TYPE) \
+ ASSERT_HAS_JSON(GETTER, TYPE); \
+ auto VARIABLE = (GETTER).as##TYPE()
+
+// Checks that the GETTER's value is present, is of the expected TYPE, and has
+// the expected VALUE. (Non-critical)
+# define EXPECT_EQ_JSON(GETTER, TYPE, VALUE) \
+ do { \
+ if ((GETTER).isNull()) { \
+ EXPECT_FALSE((GETTER).isNull()) \
+ << #GETTER " doesn't exist or is null"; \
+ } else if (!(GETTER).is##TYPE()) { \
+ EXPECT_TRUE((GETTER).is##TYPE()) \
+ << #GETTER " didn't return type " #TYPE; \
+ } else { \
+ EXPECT_EQ((GETTER).as##TYPE(), (VALUE)); \
+ } \
+ } while (false)
+
+// Checks that the GETTER's value is present, and is a valid index into the
+// STRINGTABLE array, pointing at the expected STRING.
+# define EXPECT_EQ_STRINGTABLE(GETTER, STRINGTABLE, STRING) \
+ do { \
+ if ((GETTER).isNull()) { \
+ EXPECT_FALSE((GETTER).isNull()) \
+ << #GETTER " doesn't exist or is null"; \
+ } else if (!(GETTER).isUInt()) { \
+ EXPECT_TRUE((GETTER).isUInt()) << #GETTER " didn't return an index"; \
+ } else { \
+ EXPECT_LT((GETTER).asUInt(), (STRINGTABLE).size()); \
+ EXPECT_EQ_JSON((STRINGTABLE)[(GETTER).asUInt()], String, (STRING)); \
+ } \
+ } while (false)
+
+# define EXPECT_JSON_ARRAY_CONTAINS(GETTER, TYPE, VALUE) \
+ do { \
+ if ((GETTER).isNull()) { \
+ EXPECT_FALSE((GETTER).isNull()) \
+ << #GETTER " doesn't exist or is null"; \
+ } else if (!(GETTER).isArray()) { \
+ EXPECT_TRUE((GETTER).is##TYPE()) << #GETTER " is not an array"; \
+ } else if (const Json::ArrayIndex size = (GETTER).size(); size == 0u) { \
+ EXPECT_NE(size, 0u) << #GETTER " is an empty array"; \
+ } else { \
+ bool found = false; \
+ for (Json::ArrayIndex i = 0; i < size; ++i) { \
+ if (!(GETTER)[i].is##TYPE()) { \
+ EXPECT_TRUE((GETTER)[i].is##TYPE()) \
+ << #GETTER "[" << i << "] is not " #TYPE; \
+ break; \
+ } \
+ if ((GETTER)[i].as##TYPE() == (VALUE)) { \
+ found = true; \
+ break; \
+ } \
+ } \
+ EXPECT_TRUE(found) << #GETTER " doesn't contain " #VALUE; \
+ } \
+ } while (false)
+
+# define EXPECT_JSON_ARRAY_EXCLUDES(GETTER, TYPE, VALUE) \
+ do { \
+ if ((GETTER).isNull()) { \
+ EXPECT_FALSE((GETTER).isNull()) \
+ << #GETTER " doesn't exist or is null"; \
+ } else if (!(GETTER).isArray()) { \
+ EXPECT_TRUE((GETTER).is##TYPE()) << #GETTER " is not an array"; \
+ } else { \
+ const Json::ArrayIndex size = (GETTER).size(); \
+ for (Json::ArrayIndex i = 0; i < size; ++i) { \
+ if (!(GETTER)[i].is##TYPE()) { \
+ EXPECT_TRUE((GETTER)[i].is##TYPE()) \
+ << #GETTER "[" << i << "] is not " #TYPE; \
+ break; \
+ } \
+ if ((GETTER)[i].as##TYPE() == (VALUE)) { \
+ EXPECT_TRUE((GETTER)[i].as##TYPE() != (VALUE)) \
+ << #GETTER " contains " #VALUE; \
+ break; \
+ } \
+ } \
+ } \
+ } while (false)
+
+// Check that the given process root contains all the expected properties.
+static void JSONRootCheck(const Json::Value& aRoot,
+ bool aWithMainThread = true) {
+ ASSERT_TRUE(aRoot.isObject());
+
+ EXPECT_HAS_JSON(aRoot["libs"], Array);
+
+ GET_JSON(meta, aRoot["meta"], Object);
+ EXPECT_HAS_JSON(meta["version"], UInt);
+ EXPECT_HAS_JSON(meta["startTime"], Double);
+ EXPECT_HAS_JSON(meta["profilingStartTime"], Double);
+ EXPECT_HAS_JSON(meta["contentEarliestTime"], Double);
+ EXPECT_HAS_JSON(meta["profilingEndTime"], Double);
+
+ EXPECT_HAS_JSON(aRoot["pages"], Array);
+
+ EXPECT_HAS_JSON(aRoot["profilerOverhead"], Object);
+
+ // "counters" is only present if there is any data to report.
+ // Test that expect "counters" should test for its presence first.
+ if (aRoot.isMember("counters")) {
+ // We have "counters", test their overall validity.
+ GET_JSON(counters, aRoot["counters"], Array);
+ for (const Json::Value& counter : counters) {
+ ASSERT_TRUE(counter.isObject());
+ EXPECT_HAS_JSON(counter["name"], String);
+ EXPECT_HAS_JSON(counter["category"], String);
+ EXPECT_HAS_JSON(counter["description"], String);
+ GET_JSON(sampleGroups, counter["sample_groups"], Array);
+ for (const Json::Value& sampleGroup : sampleGroups) {
+ ASSERT_TRUE(sampleGroup.isObject());
+ EXPECT_HAS_JSON(sampleGroup["id"], UInt);
+
+ GET_JSON(samples, sampleGroup["samples"], Object);
+ GET_JSON(samplesSchema, samples["schema"], Object);
+ EXPECT_GE(samplesSchema.size(), 3u);
+ GET_JSON_VALUE(samplesTime, samplesSchema["time"], UInt);
+ GET_JSON_VALUE(samplesNumber, samplesSchema["number"], UInt);
+ GET_JSON_VALUE(samplesCount, samplesSchema["count"], UInt);
+ GET_JSON(samplesData, samples["data"], Array);
+ double previousTime = 0.0;
+ for (const Json::Value& sample : samplesData) {
+ ASSERT_TRUE(sample.isArray());
+ GET_JSON_VALUE(time, sample[samplesTime], Double);
+ EXPECT_GE(time, previousTime);
+ previousTime = time;
+ if (sample.isValidIndex(samplesNumber)) {
+ EXPECT_HAS_JSON(sample[samplesNumber], UInt64);
+ }
+ if (sample.isValidIndex(samplesCount)) {
+ EXPECT_HAS_JSON(sample[samplesCount], Int64);
+ }
+ }
+ }
+ }
+ }
+
+ GET_JSON(threads, aRoot["threads"], Array);
+ const Json::ArrayIndex threadCount = threads.size();
+ for (Json::ArrayIndex i = 0; i < threadCount; ++i) {
+ GET_JSON(thread, threads[i], Object);
+ EXPECT_HAS_JSON(thread["processType"], String);
+ EXPECT_HAS_JSON(thread["name"], String);
+ EXPECT_HAS_JSON(thread["registerTime"], Double);
+ GET_JSON(samples, thread["samples"], Object);
+ EXPECT_HAS_JSON(thread["markers"], Object);
+ EXPECT_HAS_JSON(thread["pid"], Int64);
+ EXPECT_HAS_JSON(thread["tid"], Int64);
+ GET_JSON(stackTable, thread["stackTable"], Object);
+ GET_JSON(frameTable, thread["frameTable"], Object);
+ GET_JSON(stringTable, thread["stringTable"], Array);
+
+ GET_JSON(stackTableSchema, stackTable["schema"], Object);
+ EXPECT_GE(stackTableSchema.size(), 2u);
+ GET_JSON_VALUE(stackTablePrefix, stackTableSchema["prefix"], UInt);
+ GET_JSON_VALUE(stackTableFrame, stackTableSchema["frame"], UInt);
+ GET_JSON(stackTableData, stackTable["data"], Array);
+
+ GET_JSON(frameTableSchema, frameTable["schema"], Object);
+ EXPECT_GE(frameTableSchema.size(), 1u);
+ GET_JSON_VALUE(frameTableLocation, frameTableSchema["location"], UInt);
+ GET_JSON(frameTableData, frameTable["data"], Array);
+
+ GET_JSON(samplesSchema, samples["schema"], Object);
+ GET_JSON_VALUE(sampleStackIndex, samplesSchema["stack"], UInt);
+ GET_JSON(samplesData, samples["data"], Array);
+ for (const Json::Value& sample : samplesData) {
+ ASSERT_TRUE(sample.isArray());
+ if (sample.isValidIndex(sampleStackIndex)) {
+ if (!sample[sampleStackIndex].isNull()) {
+ GET_JSON_MUTABLE_VALUE(stack, sample[sampleStackIndex], UInt);
+ EXPECT_TRUE(stackTableData.isValidIndex(stack));
+ for (;;) {
+ // `stack` (from the sample, or from the callee frame's "prefix" in
+ // the previous loop) points into the stackTable.
+ GET_JSON(stackTableEntry, stackTableData[stack], Array);
+ GET_JSON_VALUE(frame, stackTableEntry[stackTableFrame], UInt);
+
+ // The stackTable entry's "frame" points into the frameTable.
+ EXPECT_TRUE(frameTableData.isValidIndex(frame));
+ GET_JSON(frameTableEntry, frameTableData[frame], Array);
+ GET_JSON_VALUE(location, frameTableEntry[frameTableLocation], UInt);
+
+ // The frameTable entry's "location" points at a string.
+ EXPECT_TRUE(stringTable.isValidIndex(location));
+
+ // The stackTable entry's "prefix" is null for the root frame.
+ if (stackTableEntry[stackTablePrefix].isNull()) {
+ break;
+ }
+ // Otherwise it recursively points at the caller in the stackTable.
+ GET_JSON_VALUE(prefix, stackTableEntry[stackTablePrefix], UInt);
+ EXPECT_TRUE(stackTableData.isValidIndex(prefix));
+ stack = prefix;
+ }
+ }
+ }
+ }
+ }
+
+ if (aWithMainThread) {
+ ASSERT_GT(threadCount, 0u);
+ GET_JSON(thread0, threads[0], Object);
+ EXPECT_EQ_JSON(thread0["name"], String, "GeckoMain");
+ }
+
+ EXPECT_HAS_JSON(aRoot["pausedRanges"], Array);
+
+ const Json::Value& processes = aRoot["processes"];
+ if (!processes.isNull()) {
+ ASSERT_TRUE(processes.isArray());
+ const Json::ArrayIndex processCount = processes.size();
+ for (Json::ArrayIndex i = 0; i < processCount; ++i) {
+ GET_JSON(process, processes[i], Object);
+ JSONRootCheck(process, aWithMainThread);
+ }
+ }
+
+ GET_JSON(profilingLog, aRoot["profilingLog"], Object);
+ EXPECT_EQ(profilingLog.size(), 1u);
+ for (auto it = profilingLog.begin(); it != profilingLog.end(); ++it) {
+ // The key should be a pid.
+ const auto key = it.name();
+ for (const auto letter : key) {
+ EXPECT_GE(letter, '0');
+ EXPECT_LE(letter, '9');
+ }
+ // And the value should be an object.
+ GET_JSON(logForPid, profilingLog[key], Object);
+ // Its content is not defined, but we expect at least these:
+ EXPECT_HAS_JSON(logForPid["profilingLogBegin_TSms"], Double);
+ EXPECT_HAS_JSON(logForPid["profilingLogEnd_TSms"], Double);
+ }
+}
+
+// Check that various expected top properties are in the JSON, and then call the
+// provided `aJSONCheckFunction` with the JSON root object.
+template <typename JSONCheckFunction>
+void JSONOutputCheck(const char* aOutput,
+ JSONCheckFunction&& aJSONCheckFunction) {
+ ASSERT_NE(aOutput, nullptr);
+
+ JSONWhitespaceCheck(aOutput);
+
+ // Extract JSON.
+ Json::Value parsedRoot;
+ Json::CharReaderBuilder builder;
+ const std::unique_ptr<Json::CharReader> reader(builder.newCharReader());
+ ASSERT_TRUE(
+ reader->parse(aOutput, strchr(aOutput, '\0'), &parsedRoot, nullptr));
+
+ JSONRootCheck(parsedRoot);
+
+ std::forward<JSONCheckFunction>(aJSONCheckFunction)(parsedRoot);
+}
+
+// Returns `static_cast<SamplingState>(-1)` if callback could not be installed.
+static SamplingState WaitForSamplingState() {
+ Atomic<int> samplingState{-1};
+
+ if (!profiler_callback_after_sampling([&](SamplingState aSamplingState) {
+ samplingState = static_cast<int>(aSamplingState);
+ })) {
+ return static_cast<SamplingState>(-1);
+ }
+
+ while (samplingState == -1) {
+ }
+
+ return static_cast<SamplingState>(static_cast<int>(samplingState));
+}
+
+typedef Vector<const char*> StrVec;
+
+static void InactiveFeaturesAndParamsCheck() {
+ int entries;
+ Maybe<double> duration;
+ double interval;
+ uint32_t features;
+ StrVec filters;
+ uint64_t activeTabID;
+
+ ASSERT_TRUE(!profiler_is_active());
+ ASSERT_TRUE(!profiler_feature_active(ProfilerFeature::MainThreadIO));
+ ASSERT_TRUE(!profiler_feature_active(ProfilerFeature::NativeAllocations));
+
+ profiler_get_start_params(&entries, &duration, &interval, &features, &filters,
+ &activeTabID);
+
+ ASSERT_TRUE(entries == 0);
+ ASSERT_TRUE(duration == Nothing());
+ ASSERT_TRUE(interval == 0);
+ ASSERT_TRUE(features == 0);
+ ASSERT_TRUE(filters.empty());
+ ASSERT_TRUE(activeTabID == 0);
+}
+
+static void ActiveParamsCheck(int aEntries, double aInterval,
+ uint32_t aFeatures, const char** aFilters,
+ size_t aFiltersLen, uint64_t aActiveTabID,
+ const Maybe<double>& aDuration = Nothing()) {
+ int entries;
+ Maybe<double> duration;
+ double interval;
+ uint32_t features;
+ StrVec filters;
+ uint64_t activeTabID;
+
+ profiler_get_start_params(&entries, &duration, &interval, &features, &filters,
+ &activeTabID);
+
+ ASSERT_TRUE(entries == aEntries);
+ ASSERT_TRUE(duration == aDuration);
+ ASSERT_TRUE(interval == aInterval);
+ ASSERT_TRUE(features == aFeatures);
+ ASSERT_TRUE(filters.length() == aFiltersLen);
+ ASSERT_TRUE(activeTabID == aActiveTabID);
+ for (size_t i = 0; i < aFiltersLen; i++) {
+ ASSERT_TRUE(strcmp(filters[i], aFilters[i]) == 0);
+ }
+}
+
+TEST(GeckoProfiler, FeaturesAndParams)
+{
+ InactiveFeaturesAndParamsCheck();
+
+ // Try a couple of features and filters.
+ {
+ uint32_t features = ProfilerFeature::JS;
+ const char* filters[] = {"GeckoMain", "Compositor"};
+
+# define PROFILER_DEFAULT_DURATION 20 /* seconds, for tests only */
+ profiler_start(PROFILER_DEFAULT_ENTRIES, PROFILER_DEFAULT_INTERVAL,
+ features, filters, MOZ_ARRAY_LENGTH(filters), 100,
+ Some(PROFILER_DEFAULT_DURATION));
+
+ ASSERT_TRUE(profiler_is_active());
+ ASSERT_TRUE(!profiler_feature_active(ProfilerFeature::MainThreadIO));
+ ASSERT_TRUE(!profiler_feature_active(ProfilerFeature::IPCMessages));
+
+ ActiveParamsCheck(PROFILER_DEFAULT_ENTRIES.Value(),
+ PROFILER_DEFAULT_INTERVAL, features, filters,
+ MOZ_ARRAY_LENGTH(filters), 100,
+ Some(PROFILER_DEFAULT_DURATION));
+
+ profiler_stop();
+
+ InactiveFeaturesAndParamsCheck();
+ }
+
+ // Try some different features and filters.
+ {
+ uint32_t features =
+ ProfilerFeature::MainThreadIO | ProfilerFeature::IPCMessages;
+ const char* filters[] = {"GeckoMain", "Foo", "Bar"};
+
+ // Testing with some arbitrary buffer size (as could be provided by
+ // external code), which we convert to the appropriate power of 2.
+ profiler_start(PowerOfTwo32(999999), 3, features, filters,
+ MOZ_ARRAY_LENGTH(filters), 123, Some(25.0));
+
+ ASSERT_TRUE(profiler_is_active());
+ ASSERT_TRUE(profiler_feature_active(ProfilerFeature::MainThreadIO));
+ ASSERT_TRUE(profiler_feature_active(ProfilerFeature::IPCMessages));
+
+ ActiveParamsCheck(int(PowerOfTwo32(999999).Value()), 3, features, filters,
+ MOZ_ARRAY_LENGTH(filters), 123, Some(25.0));
+
+ profiler_stop();
+
+ InactiveFeaturesAndParamsCheck();
+ }
+
+ // Try with no duration
+ {
+ uint32_t features =
+ ProfilerFeature::MainThreadIO | ProfilerFeature::IPCMessages;
+ const char* filters[] = {"GeckoMain", "Foo", "Bar"};
+
+ profiler_start(PowerOfTwo32(999999), 3, features, filters,
+ MOZ_ARRAY_LENGTH(filters), 0, Nothing());
+
+ ASSERT_TRUE(profiler_is_active());
+ ASSERT_TRUE(profiler_feature_active(ProfilerFeature::MainThreadIO));
+ ASSERT_TRUE(profiler_feature_active(ProfilerFeature::IPCMessages));
+
+ ActiveParamsCheck(int(PowerOfTwo32(999999).Value()), 3, features, filters,
+ MOZ_ARRAY_LENGTH(filters), 0, Nothing());
+
+ profiler_stop();
+
+ InactiveFeaturesAndParamsCheck();
+ }
+
+ // Try all supported features, and filters that match all threads.
+ {
+ uint32_t availableFeatures = profiler_get_available_features();
+ const char* filters[] = {""};
+
+ profiler_start(PowerOfTwo32(88888), 10, availableFeatures, filters,
+ MOZ_ARRAY_LENGTH(filters), 0, Some(15.0));
+
+ ASSERT_TRUE(profiler_is_active());
+ ASSERT_TRUE(profiler_feature_active(ProfilerFeature::MainThreadIO));
+ ASSERT_TRUE(profiler_feature_active(ProfilerFeature::IPCMessages));
+
+ ActiveParamsCheck(PowerOfTwo32(88888).Value(), 10, availableFeatures,
+ filters, MOZ_ARRAY_LENGTH(filters), 0, Some(15.0));
+
+ // Don't call profiler_stop() here.
+ }
+
+ // Try no features, and filters that match no threads.
+ {
+ uint32_t features = 0;
+ const char* filters[] = {"NoThreadWillMatchThis"};
+
+ // Second profiler_start() call in a row without an intervening
+ // profiler_stop(); this will do an implicit profiler_stop() and restart.
+ profiler_start(PowerOfTwo32(0), 0, features, filters,
+ MOZ_ARRAY_LENGTH(filters), 0, Some(0.0));
+
+ ASSERT_TRUE(profiler_is_active());
+ ASSERT_TRUE(!profiler_feature_active(ProfilerFeature::MainThreadIO));
+ ASSERT_TRUE(!profiler_feature_active(ProfilerFeature::IPCMessages));
+
+ // Entries and intervals go to defaults if 0 is specified.
+ ActiveParamsCheck(PROFILER_DEFAULT_ENTRIES.Value(),
+ PROFILER_DEFAULT_INTERVAL, features, filters,
+ MOZ_ARRAY_LENGTH(filters), 0, Nothing());
+
+ profiler_stop();
+
+ InactiveFeaturesAndParamsCheck();
+
+ // These calls are no-ops.
+ profiler_stop();
+ profiler_stop();
+
+ InactiveFeaturesAndParamsCheck();
+ }
+}
+
+TEST(GeckoProfiler, EnsureStarted)
+{
+ InactiveFeaturesAndParamsCheck();
+
+ uint32_t features = ProfilerFeature::JS;
+ const char* filters[] = {"GeckoMain", "Compositor"};
+ {
+ // Inactive -> Active
+ profiler_ensure_started(PROFILER_DEFAULT_ENTRIES, PROFILER_DEFAULT_INTERVAL,
+ features, filters, MOZ_ARRAY_LENGTH(filters), 0,
+ Some(PROFILER_DEFAULT_DURATION));
+
+ ActiveParamsCheck(
+ PROFILER_DEFAULT_ENTRIES.Value(), PROFILER_DEFAULT_INTERVAL, features,
+ filters, MOZ_ARRAY_LENGTH(filters), 0, Some(PROFILER_DEFAULT_DURATION));
+ }
+
+ {
+ // Active -> Active with same settings
+
+ Maybe<ProfilerBufferInfo> info0 = profiler_get_buffer_info();
+ ASSERT_TRUE(info0->mRangeEnd > 0);
+
+ // First, write some samples into the buffer.
+ PR_Sleep(PR_MillisecondsToInterval(500));
+
+ Maybe<ProfilerBufferInfo> info1 = profiler_get_buffer_info();
+ ASSERT_TRUE(info1->mRangeEnd > info0->mRangeEnd);
+
+ // Call profiler_ensure_started with the same settings as before.
+ // This operation must not clear our buffer!
+ profiler_ensure_started(PROFILER_DEFAULT_ENTRIES, PROFILER_DEFAULT_INTERVAL,
+ features, filters, MOZ_ARRAY_LENGTH(filters), 0,
+ Some(PROFILER_DEFAULT_DURATION));
+
+ ActiveParamsCheck(
+ PROFILER_DEFAULT_ENTRIES.Value(), PROFILER_DEFAULT_INTERVAL, features,
+ filters, MOZ_ARRAY_LENGTH(filters), 0, Some(PROFILER_DEFAULT_DURATION));
+
+ // Check that our position in the buffer stayed the same or advanced, but
+ // not by much, and the range-start after profiler_ensure_started shouldn't
+ // have passed the range-end before.
+ Maybe<ProfilerBufferInfo> info2 = profiler_get_buffer_info();
+ ASSERT_TRUE(info2->mRangeEnd >= info1->mRangeEnd);
+ ASSERT_TRUE(info2->mRangeEnd - info1->mRangeEnd <
+ info1->mRangeEnd - info0->mRangeEnd);
+ ASSERT_TRUE(info2->mRangeStart < info1->mRangeEnd);
+ }
+
+ {
+ // Active -> Active with *different* settings
+
+ Maybe<ProfilerBufferInfo> info1 = profiler_get_buffer_info();
+
+ // Call profiler_ensure_started with a different feature set than the one
+ // it's currently running with. This is supposed to stop and restart the
+ // profiler, thereby discarding the buffer contents.
+ uint32_t differentFeatures = features | ProfilerFeature::CPUUtilization;
+ profiler_ensure_started(PROFILER_DEFAULT_ENTRIES, PROFILER_DEFAULT_INTERVAL,
+ differentFeatures, filters,
+ MOZ_ARRAY_LENGTH(filters), 0);
+
+ ActiveParamsCheck(PROFILER_DEFAULT_ENTRIES.Value(),
+ PROFILER_DEFAULT_INTERVAL, differentFeatures, filters,
+ MOZ_ARRAY_LENGTH(filters), 0);
+
+ // Check the the buffer was cleared, so its range-start should be at/after
+ // its range-end before.
+ Maybe<ProfilerBufferInfo> info2 = profiler_get_buffer_info();
+ ASSERT_TRUE(info2->mRangeStart >= info1->mRangeEnd);
+ }
+
+ {
+ // Active -> Inactive
+
+ profiler_stop();
+
+ InactiveFeaturesAndParamsCheck();
+ }
+}
+
+TEST(GeckoProfiler, MultiRegistration)
+{
+ // This whole test only checks that function calls don't crash, they don't
+ // actually verify that threads get profiled or not.
+
+ {
+ std::thread thread([]() {
+ char top;
+ profiler_register_thread("thread, no unreg", &top);
+ });
+ thread.join();
+ }
+
+ {
+ std::thread thread([]() { profiler_unregister_thread(); });
+ thread.join();
+ }
+
+ {
+ std::thread thread([]() {
+ char top;
+ profiler_register_thread("thread 1st", &top);
+ profiler_unregister_thread();
+ profiler_register_thread("thread 2nd", &top);
+ profiler_unregister_thread();
+ });
+ thread.join();
+ }
+
+ {
+ std::thread thread([]() {
+ char top;
+ profiler_register_thread("thread once", &top);
+ profiler_register_thread("thread again", &top);
+ profiler_unregister_thread();
+ });
+ thread.join();
+ }
+
+ {
+ std::thread thread([]() {
+ char top;
+ profiler_register_thread("thread to unreg twice", &top);
+ profiler_unregister_thread();
+ profiler_unregister_thread();
+ });
+ thread.join();
+ }
+}
+
+TEST(GeckoProfiler, DifferentThreads)
+{
+ InactiveFeaturesAndParamsCheck();
+
+ nsCOMPtr<nsIThread> thread;
+ nsresult rv = NS_NewNamedThread("GeckoProfGTest", getter_AddRefs(thread));
+ ASSERT_NS_SUCCEEDED(rv);
+
+ // Control the profiler on a background thread and verify flags on the
+ // main thread.
+ {
+ uint32_t features = ProfilerFeature::JS;
+ const char* filters[] = {"GeckoMain", "Compositor"};
+
+ NS_DispatchAndSpinEventLoopUntilComplete(
+ "GeckoProfiler_DifferentThreads_Test::TestBody"_ns, thread,
+ NS_NewRunnableFunction(
+ "GeckoProfiler_DifferentThreads_Test::TestBody", [&]() {
+ profiler_start(PROFILER_DEFAULT_ENTRIES,
+ PROFILER_DEFAULT_INTERVAL, features, filters,
+ MOZ_ARRAY_LENGTH(filters), 0);
+ }));
+
+ ASSERT_TRUE(profiler_is_active());
+ ASSERT_TRUE(!profiler_feature_active(ProfilerFeature::MainThreadIO));
+ ASSERT_TRUE(!profiler_feature_active(ProfilerFeature::IPCMessages));
+
+ ActiveParamsCheck(PROFILER_DEFAULT_ENTRIES.Value(),
+ PROFILER_DEFAULT_INTERVAL, features, filters,
+ MOZ_ARRAY_LENGTH(filters), 0);
+
+ NS_DispatchAndSpinEventLoopUntilComplete(
+ "GeckoProfiler_DifferentThreads_Test::TestBody"_ns, thread,
+ NS_NewRunnableFunction("GeckoProfiler_DifferentThreads_Test::TestBody",
+ [&]() { profiler_stop(); }));
+
+ InactiveFeaturesAndParamsCheck();
+ }
+
+ // Control the profiler on the main thread and verify flags on a
+ // background thread.
+ {
+ uint32_t features = ProfilerFeature::JS;
+ const char* filters[] = {"GeckoMain", "Compositor"};
+
+ profiler_start(PROFILER_DEFAULT_ENTRIES, PROFILER_DEFAULT_INTERVAL,
+ features, filters, MOZ_ARRAY_LENGTH(filters), 0);
+
+ NS_DispatchAndSpinEventLoopUntilComplete(
+ "GeckoProfiler_DifferentThreads_Test::TestBody"_ns, thread,
+ NS_NewRunnableFunction(
+ "GeckoProfiler_DifferentThreads_Test::TestBody", [&]() {
+ ASSERT_TRUE(profiler_is_active());
+ ASSERT_TRUE(
+ !profiler_feature_active(ProfilerFeature::MainThreadIO));
+ ASSERT_TRUE(
+ !profiler_feature_active(ProfilerFeature::IPCMessages));
+
+ ActiveParamsCheck(PROFILER_DEFAULT_ENTRIES.Value(),
+ PROFILER_DEFAULT_INTERVAL, features, filters,
+ MOZ_ARRAY_LENGTH(filters), 0);
+ }));
+
+ profiler_stop();
+
+ NS_DispatchAndSpinEventLoopUntilComplete(
+ "GeckoProfiler_DifferentThreads_Test::TestBody"_ns, thread,
+ NS_NewRunnableFunction("GeckoProfiler_DifferentThreads_Test::TestBody",
+ [&]() { InactiveFeaturesAndParamsCheck(); }));
+ }
+
+ thread->Shutdown();
+}
+
+TEST(GeckoProfiler, GetBacktrace)
+{
+ ASSERT_TRUE(!profiler_get_backtrace());
+
+ {
+ uint32_t features = ProfilerFeature::StackWalk;
+ const char* filters[] = {"GeckoMain"};
+
+ profiler_start(PROFILER_DEFAULT_ENTRIES, PROFILER_DEFAULT_INTERVAL,
+ features, filters, MOZ_ARRAY_LENGTH(filters), 0);
+
+ // These will be destroyed while the profiler is active.
+ static const int N = 100;
+ {
+ UniqueProfilerBacktrace u[N];
+ for (int i = 0; i < N; i++) {
+ u[i] = profiler_get_backtrace();
+ ASSERT_TRUE(u[i]);
+ }
+ }
+
+ // These will be destroyed after the profiler stops.
+ UniqueProfilerBacktrace u[N];
+ for (int i = 0; i < N; i++) {
+ u[i] = profiler_get_backtrace();
+ ASSERT_TRUE(u[i]);
+ }
+
+ profiler_stop();
+ }
+
+ ASSERT_TRUE(!profiler_get_backtrace());
+}
+
+TEST(GeckoProfiler, Pause)
+{
+ profiler_init_main_thread_id();
+ ASSERT_TRUE(profiler_is_main_thread())
+ << "This test must run on the main thread";
+
+ uint32_t features = ProfilerFeature::StackWalk;
+ const char* filters[] = {"GeckoMain", "Profiled GeckoProfiler.Pause"};
+
+ ASSERT_TRUE(!profiler_is_paused());
+ for (ThreadProfilingFeatures features : scEachAndAnyThreadProfilingFeatures) {
+ ASSERT_TRUE(!profiler_thread_is_being_profiled(features));
+ ASSERT_TRUE(
+ !profiler_thread_is_being_profiled(ProfilerThreadId{}, features));
+ ASSERT_TRUE(!profiler_thread_is_being_profiled(profiler_current_thread_id(),
+ features));
+ ASSERT_TRUE(!profiler_thread_is_being_profiled(profiler_main_thread_id(),
+ features));
+ }
+
+ std::thread{[&]() {
+ {
+ for (ThreadProfilingFeatures features :
+ scEachAndAnyThreadProfilingFeatures) {
+ ASSERT_TRUE(!profiler_thread_is_being_profiled(features));
+ ASSERT_TRUE(
+ !profiler_thread_is_being_profiled(ProfilerThreadId{}, features));
+ ASSERT_TRUE(!profiler_thread_is_being_profiled(
+ profiler_current_thread_id(), features));
+ ASSERT_TRUE(!profiler_thread_is_being_profiled(
+ profiler_main_thread_id(), features));
+ }
+ }
+ {
+ AUTO_PROFILER_REGISTER_THREAD(
+ "Ignored GeckoProfiler.Pause - before start");
+ for (ThreadProfilingFeatures features :
+ scEachAndAnyThreadProfilingFeatures) {
+ ASSERT_TRUE(!profiler_thread_is_being_profiled(features));
+ ASSERT_TRUE(
+ !profiler_thread_is_being_profiled(ProfilerThreadId{}, features));
+ ASSERT_TRUE(!profiler_thread_is_being_profiled(
+ profiler_current_thread_id(), features));
+ ASSERT_TRUE(!profiler_thread_is_being_profiled(
+ profiler_main_thread_id(), features));
+ }
+ }
+ {
+ AUTO_PROFILER_REGISTER_THREAD(
+ "Profiled GeckoProfiler.Pause - before start");
+ for (ThreadProfilingFeatures features :
+ scEachAndAnyThreadProfilingFeatures) {
+ ASSERT_TRUE(!profiler_thread_is_being_profiled(features));
+ ASSERT_TRUE(
+ !profiler_thread_is_being_profiled(ProfilerThreadId{}, features));
+ ASSERT_TRUE(!profiler_thread_is_being_profiled(
+ profiler_current_thread_id(), features));
+ ASSERT_TRUE(!profiler_thread_is_being_profiled(
+ profiler_main_thread_id(), features));
+ }
+ }
+ }}.join();
+
+ profiler_start(PROFILER_DEFAULT_ENTRIES, PROFILER_DEFAULT_INTERVAL, features,
+ filters, MOZ_ARRAY_LENGTH(filters), 0);
+
+ ASSERT_TRUE(!profiler_is_paused());
+ for (ThreadProfilingFeatures features : scEachAndAnyThreadProfilingFeatures) {
+ ASSERT_TRUE(profiler_thread_is_being_profiled(features));
+ ASSERT_TRUE(
+ profiler_thread_is_being_profiled(ProfilerThreadId{}, features));
+ ASSERT_TRUE(profiler_thread_is_being_profiled(profiler_current_thread_id(),
+ features));
+ }
+
+ std::thread{[&]() {
+ {
+ for (ThreadProfilingFeatures features :
+ scEachAndAnyThreadProfilingFeatures) {
+ ASSERT_TRUE(!profiler_thread_is_being_profiled(features));
+ ASSERT_TRUE(
+ !profiler_thread_is_being_profiled(ProfilerThreadId{}, features));
+ ASSERT_TRUE(!profiler_thread_is_being_profiled(
+ profiler_current_thread_id(), features));
+ ASSERT_TRUE(profiler_thread_is_being_profiled(profiler_main_thread_id(),
+ features));
+ }
+ }
+ {
+ AUTO_PROFILER_REGISTER_THREAD(
+ "Ignored GeckoProfiler.Pause - after start");
+ for (ThreadProfilingFeatures features :
+ scEachAndAnyThreadProfilingFeatures) {
+ ASSERT_TRUE(!profiler_thread_is_being_profiled(features));
+ ASSERT_TRUE(
+ !profiler_thread_is_being_profiled(ProfilerThreadId{}, features));
+ ASSERT_TRUE(!profiler_thread_is_being_profiled(
+ profiler_current_thread_id(), features));
+ ASSERT_TRUE(profiler_thread_is_being_profiled(profiler_main_thread_id(),
+ features));
+ }
+ }
+ {
+ AUTO_PROFILER_REGISTER_THREAD(
+ "Profiled GeckoProfiler.Pause - after start");
+ for (ThreadProfilingFeatures features :
+ scEachAndAnyThreadProfilingFeatures) {
+ ASSERT_TRUE(profiler_thread_is_being_profiled(features));
+ ASSERT_TRUE(
+ profiler_thread_is_being_profiled(ProfilerThreadId{}, features));
+ ASSERT_TRUE(profiler_thread_is_being_profiled(
+ profiler_current_thread_id(), features));
+ ASSERT_TRUE(profiler_thread_is_being_profiled(profiler_main_thread_id(),
+ features));
+ }
+ }
+ }}.join();
+
+ // Check that we are writing samples while not paused.
+ Maybe<ProfilerBufferInfo> info1 = profiler_get_buffer_info();
+ PR_Sleep(PR_MillisecondsToInterval(500));
+ Maybe<ProfilerBufferInfo> info2 = profiler_get_buffer_info();
+ ASSERT_TRUE(info1->mRangeEnd != info2->mRangeEnd);
+
+ // Check that we are writing markers while not paused.
+ ASSERT_TRUE(profiler_thread_is_being_profiled_for_markers());
+ ASSERT_TRUE(
+ profiler_thread_is_being_profiled_for_markers(ProfilerThreadId{}));
+ ASSERT_TRUE(profiler_thread_is_being_profiled_for_markers(
+ profiler_current_thread_id()));
+ ASSERT_TRUE(
+ profiler_thread_is_being_profiled_for_markers(profiler_main_thread_id()));
+ info1 = profiler_get_buffer_info();
+ PROFILER_MARKER_UNTYPED("Not paused", OTHER, {});
+ info2 = profiler_get_buffer_info();
+ ASSERT_TRUE(info1->mRangeEnd != info2->mRangeEnd);
+
+ profiler_pause();
+
+ ASSERT_TRUE(profiler_is_paused());
+ for (ThreadProfilingFeatures features : scEachAndAnyThreadProfilingFeatures) {
+ ASSERT_TRUE(!profiler_thread_is_being_profiled(features));
+ ASSERT_TRUE(
+ !profiler_thread_is_being_profiled(ProfilerThreadId{}, features));
+ ASSERT_TRUE(!profiler_thread_is_being_profiled(profiler_current_thread_id(),
+ features));
+ }
+ ASSERT_TRUE(!profiler_thread_is_being_profiled_for_markers());
+ ASSERT_TRUE(
+ !profiler_thread_is_being_profiled_for_markers(ProfilerThreadId{}));
+ ASSERT_TRUE(!profiler_thread_is_being_profiled_for_markers(
+ profiler_current_thread_id()));
+ ASSERT_TRUE(!profiler_thread_is_being_profiled_for_markers(
+ profiler_main_thread_id()));
+
+ std::thread{[&]() {
+ {
+ for (ThreadProfilingFeatures features :
+ scEachAndAnyThreadProfilingFeatures) {
+ ASSERT_TRUE(!profiler_thread_is_being_profiled(features));
+ ASSERT_TRUE(
+ !profiler_thread_is_being_profiled(ProfilerThreadId{}, features));
+ ASSERT_TRUE(!profiler_thread_is_being_profiled(
+ profiler_current_thread_id(), features));
+ ASSERT_TRUE(!profiler_thread_is_being_profiled(
+ profiler_main_thread_id(), features));
+ }
+ }
+ {
+ AUTO_PROFILER_REGISTER_THREAD(
+ "Ignored GeckoProfiler.Pause - after pause");
+ for (ThreadProfilingFeatures features :
+ scEachAndAnyThreadProfilingFeatures) {
+ ASSERT_TRUE(!profiler_thread_is_being_profiled(features));
+ ASSERT_TRUE(
+ !profiler_thread_is_being_profiled(ProfilerThreadId{}, features));
+ ASSERT_TRUE(!profiler_thread_is_being_profiled(
+ profiler_current_thread_id(), features));
+ ASSERT_TRUE(!profiler_thread_is_being_profiled(
+ profiler_main_thread_id(), features));
+ }
+ }
+ {
+ AUTO_PROFILER_REGISTER_THREAD(
+ "Profiled GeckoProfiler.Pause - after pause");
+ for (ThreadProfilingFeatures features :
+ scEachAndAnyThreadProfilingFeatures) {
+ ASSERT_TRUE(!profiler_thread_is_being_profiled(features));
+ ASSERT_TRUE(
+ !profiler_thread_is_being_profiled(ProfilerThreadId{}, features));
+ ASSERT_TRUE(!profiler_thread_is_being_profiled(
+ profiler_current_thread_id(), features));
+ ASSERT_TRUE(!profiler_thread_is_being_profiled(
+ profiler_main_thread_id(), features));
+ }
+ }
+ }}.join();
+
+ // Check that we are not writing samples while paused.
+ info1 = profiler_get_buffer_info();
+ PR_Sleep(PR_MillisecondsToInterval(500));
+ info2 = profiler_get_buffer_info();
+ ASSERT_TRUE(info1->mRangeEnd == info2->mRangeEnd);
+
+ // Check that we are now writing markers while paused.
+ info1 = profiler_get_buffer_info();
+ PROFILER_MARKER_UNTYPED("Paused", OTHER, {});
+ info2 = profiler_get_buffer_info();
+ ASSERT_TRUE(info1->mRangeEnd == info2->mRangeEnd);
+ PROFILER_MARKER_UNTYPED("Paused v2", OTHER, {});
+ Maybe<ProfilerBufferInfo> info3 = profiler_get_buffer_info();
+ ASSERT_TRUE(info2->mRangeEnd == info3->mRangeEnd);
+
+ profiler_resume();
+
+ ASSERT_TRUE(!profiler_is_paused());
+ for (ThreadProfilingFeatures features : scEachAndAnyThreadProfilingFeatures) {
+ ASSERT_TRUE(profiler_thread_is_being_profiled(features));
+ ASSERT_TRUE(
+ profiler_thread_is_being_profiled(ProfilerThreadId{}, features));
+ ASSERT_TRUE(profiler_thread_is_being_profiled(profiler_current_thread_id(),
+ features));
+ }
+
+ std::thread{[&]() {
+ {
+ for (ThreadProfilingFeatures features :
+ scEachAndAnyThreadProfilingFeatures) {
+ ASSERT_TRUE(!profiler_thread_is_being_profiled(features));
+ ASSERT_TRUE(
+ !profiler_thread_is_being_profiled(ProfilerThreadId{}, features));
+ ASSERT_TRUE(!profiler_thread_is_being_profiled(
+ profiler_current_thread_id(), features));
+ ASSERT_TRUE(profiler_thread_is_being_profiled(profiler_main_thread_id(),
+ features));
+ }
+ }
+ {
+ AUTO_PROFILER_REGISTER_THREAD(
+ "Ignored GeckoProfiler.Pause - after resume");
+ for (ThreadProfilingFeatures features :
+ scEachAndAnyThreadProfilingFeatures) {
+ ASSERT_TRUE(!profiler_thread_is_being_profiled(features));
+ ASSERT_TRUE(
+ !profiler_thread_is_being_profiled(ProfilerThreadId{}, features));
+ ASSERT_TRUE(!profiler_thread_is_being_profiled(
+ profiler_current_thread_id(), features));
+ ASSERT_TRUE(profiler_thread_is_being_profiled(profiler_main_thread_id(),
+ features));
+ }
+ }
+ {
+ AUTO_PROFILER_REGISTER_THREAD(
+ "Profiled GeckoProfiler.Pause - after resume");
+ for (ThreadProfilingFeatures features :
+ scEachAndAnyThreadProfilingFeatures) {
+ ASSERT_TRUE(profiler_thread_is_being_profiled(features));
+ ASSERT_TRUE(
+ profiler_thread_is_being_profiled(ProfilerThreadId{}, features));
+ ASSERT_TRUE(profiler_thread_is_being_profiled(
+ profiler_current_thread_id(), features));
+ ASSERT_TRUE(profiler_thread_is_being_profiled(profiler_main_thread_id(),
+ features));
+ }
+ }
+ }}.join();
+
+ profiler_stop();
+
+ ASSERT_TRUE(!profiler_is_paused());
+ for (ThreadProfilingFeatures features : scEachAndAnyThreadProfilingFeatures) {
+ ASSERT_TRUE(!profiler_thread_is_being_profiled(features));
+ ASSERT_TRUE(
+ !profiler_thread_is_being_profiled(ProfilerThreadId{}, features));
+ ASSERT_TRUE(!profiler_thread_is_being_profiled(profiler_current_thread_id(),
+ features));
+ }
+
+ std::thread{[&]() {
+ {
+ for (ThreadProfilingFeatures features :
+ scEachAndAnyThreadProfilingFeatures) {
+ ASSERT_TRUE(!profiler_thread_is_being_profiled(features));
+ ASSERT_TRUE(
+ !profiler_thread_is_being_profiled(ProfilerThreadId{}, features));
+ ASSERT_TRUE(!profiler_thread_is_being_profiled(
+ profiler_current_thread_id(), features));
+ ASSERT_TRUE(!profiler_thread_is_being_profiled(
+ profiler_main_thread_id(), features));
+ }
+ }
+ {
+ AUTO_PROFILER_REGISTER_THREAD("Ignored GeckoProfiler.Pause - after stop");
+ for (ThreadProfilingFeatures features :
+ scEachAndAnyThreadProfilingFeatures) {
+ ASSERT_TRUE(!profiler_thread_is_being_profiled(features));
+ ASSERT_TRUE(
+ !profiler_thread_is_being_profiled(ProfilerThreadId{}, features));
+ ASSERT_TRUE(!profiler_thread_is_being_profiled(
+ profiler_current_thread_id(), features));
+ ASSERT_TRUE(!profiler_thread_is_being_profiled(
+ profiler_main_thread_id(), features));
+ }
+ }
+ {
+ AUTO_PROFILER_REGISTER_THREAD(
+ "Profiled GeckoProfiler.Pause - after stop");
+ for (ThreadProfilingFeatures features :
+ scEachAndAnyThreadProfilingFeatures) {
+ ASSERT_TRUE(!profiler_thread_is_being_profiled(features));
+ ASSERT_TRUE(
+ !profiler_thread_is_being_profiled(ProfilerThreadId{}, features));
+ ASSERT_TRUE(!profiler_thread_is_being_profiled(
+ profiler_current_thread_id(), features));
+ ASSERT_TRUE(!profiler_thread_is_being_profiled(
+ profiler_main_thread_id(), features));
+ }
+ }
+ }}.join();
+}
+
+TEST(GeckoProfiler, Markers)
+{
+ uint32_t features = ProfilerFeature::StackWalk;
+ const char* filters[] = {"GeckoMain"};
+
+ profiler_start(PROFILER_DEFAULT_ENTRIES, PROFILER_DEFAULT_INTERVAL, features,
+ filters, MOZ_ARRAY_LENGTH(filters), 0);
+
+ PROFILER_MARKER("tracing event", OTHER, {}, Tracing, "A");
+ PROFILER_MARKER("tracing start", OTHER, MarkerTiming::IntervalStart(),
+ Tracing, "A");
+ PROFILER_MARKER("tracing end", OTHER, MarkerTiming::IntervalEnd(), Tracing,
+ "A");
+
+ auto bt = profiler_capture_backtrace();
+ PROFILER_MARKER("tracing event with stack", OTHER,
+ MarkerStack::TakeBacktrace(std::move(bt)), Tracing, "B");
+
+ { AUTO_PROFILER_TRACING_MARKER("C", "auto tracing", OTHER); }
+
+ PROFILER_MARKER_UNTYPED("M1", OTHER, {});
+ PROFILER_MARKER_UNTYPED("M3", OTHER, {});
+
+ // Create three strings: two that are the maximum allowed length, and one that
+ // is one char longer.
+ static const size_t kMax = ProfileBuffer::kMaxFrameKeyLength;
+ UniquePtr<char[]> okstr1 = MakeUnique<char[]>(kMax);
+ UniquePtr<char[]> okstr2 = MakeUnique<char[]>(kMax);
+ UniquePtr<char[]> longstr = MakeUnique<char[]>(kMax + 1);
+ UniquePtr<char[]> longstrCut = MakeUnique<char[]>(kMax + 1);
+ for (size_t i = 0; i < kMax; i++) {
+ okstr1[i] = 'a';
+ okstr2[i] = 'b';
+ longstr[i] = 'c';
+ longstrCut[i] = 'c';
+ }
+ okstr1[kMax - 1] = '\0';
+ okstr2[kMax - 1] = '\0';
+ longstr[kMax] = '\0';
+ longstrCut[kMax] = '\0';
+ // Should be output as-is.
+ AUTO_PROFILER_LABEL_DYNAMIC_CSTR("", LAYOUT, "");
+ AUTO_PROFILER_LABEL_DYNAMIC_CSTR("", LAYOUT, okstr1.get());
+ // Should be output as label + space + okstr2.
+ AUTO_PROFILER_LABEL_DYNAMIC_CSTR("okstr2", LAYOUT, okstr2.get());
+ // Should be output with kMax length, ending with "...\0".
+ AUTO_PROFILER_LABEL_DYNAMIC_CSTR("", LAYOUT, longstr.get());
+ ASSERT_EQ(longstrCut[kMax - 4], 'c');
+ longstrCut[kMax - 4] = '.';
+ ASSERT_EQ(longstrCut[kMax - 3], 'c');
+ longstrCut[kMax - 3] = '.';
+ ASSERT_EQ(longstrCut[kMax - 2], 'c');
+ longstrCut[kMax - 2] = '.';
+ ASSERT_EQ(longstrCut[kMax - 1], 'c');
+ longstrCut[kMax - 1] = '\0';
+
+ // Test basic markers 2.0.
+ EXPECT_TRUE(
+ profiler_add_marker("default-templated markers 2.0 with empty options",
+ geckoprofiler::category::OTHER, {}));
+
+ PROFILER_MARKER_UNTYPED(
+ "default-templated markers 2.0 with option", OTHER,
+ MarkerStack::TakeBacktrace(profiler_capture_backtrace()));
+
+ PROFILER_MARKER("explicitly-default-templated markers 2.0 with empty options",
+ OTHER, {}, NoPayload);
+
+ EXPECT_TRUE(profiler_add_marker(
+ "explicitly-default-templated markers 2.0 with option",
+ geckoprofiler::category::OTHER, {},
+ ::geckoprofiler::markers::NoPayload{}));
+
+ // Used in markers below.
+ TimeStamp ts1 = TimeStamp::Now();
+
+ // Sleep briefly to ensure a sample is taken and the pending markers are
+ // processed.
+ PR_Sleep(PR_MillisecondsToInterval(500));
+
+ // Used in markers below.
+ TimeStamp ts2 = TimeStamp::Now();
+ // ts1 and ts2 should be different thanks to the sleep.
+ EXPECT_NE(ts1, ts2);
+
+ // Test most marker payloads.
+
+ // Keep this one first! (It's used to record `ts1` and `ts2`, to compare
+ // to serialized numbers in other markers.)
+ EXPECT_TRUE(profiler_add_marker("FirstMarker", geckoprofiler::category::OTHER,
+ MarkerTiming::Interval(ts1, ts2),
+ geckoprofiler::markers::TextMarker{},
+ "First Marker"));
+
+ // User-defined marker type with different properties, and fake schema.
+ struct GtestMarker {
+ static constexpr Span<const char> MarkerTypeName() {
+ return MakeStringSpan("markers-gtest");
+ }
+ static void StreamJSONMarkerData(
+ mozilla::baseprofiler::SpliceableJSONWriter& aWriter, int aInt,
+ double aDouble, const mozilla::ProfilerString8View& aText,
+ const mozilla::ProfilerString8View& aUniqueText,
+ const mozilla::TimeStamp& aTime) {
+ aWriter.NullProperty("null");
+ aWriter.BoolProperty("bool-false", false);
+ aWriter.BoolProperty("bool-true", true);
+ aWriter.IntProperty("int", aInt);
+ aWriter.DoubleProperty("double", aDouble);
+ aWriter.StringProperty("text", aText);
+ aWriter.UniqueStringProperty("unique text", aUniqueText);
+ aWriter.UniqueStringProperty("unique text again", aUniqueText);
+ aWriter.TimeProperty("time", aTime);
+ }
+ static mozilla::MarkerSchema MarkerTypeDisplay() {
+ // Note: This is an test function that is not intended to actually output
+ // that correctly matches StreamJSONMarkerData data above! Instead we only
+ // test that it outputs the expected JSON at the end.
+ using MS = mozilla::MarkerSchema;
+ MS schema{MS::Location::MarkerChart, MS::Location::MarkerTable,
+ MS::Location::TimelineOverview, MS::Location::TimelineMemory,
+ MS::Location::TimelineIPC, MS::Location::TimelineFileIO,
+ MS::Location::StackChart};
+ // All label functions.
+ schema.SetChartLabel("chart label");
+ schema.SetTooltipLabel("tooltip label");
+ schema.SetTableLabel("table label");
+ // All data functions, all formats, all "searchable" values.
+ schema.AddKeyFormat("key with url", MS::Format::Url);
+ schema.AddKeyLabelFormat("key with label filePath", "label filePath",
+ MS::Format::FilePath);
+ schema.AddKeyFormatSearchable("key with string not-searchable",
+ MS::Format::String,
+ MS::Searchable::NotSearchable);
+ schema.AddKeyLabelFormatSearchable("key with label duration searchable",
+ "label duration", MS::Format::Duration,
+ MS::Searchable::Searchable);
+ schema.AddKeyFormat("key with time", MS::Format::Time);
+ schema.AddKeyFormat("key with seconds", MS::Format::Seconds);
+ schema.AddKeyFormat("key with milliseconds", MS::Format::Milliseconds);
+ schema.AddKeyFormat("key with microseconds", MS::Format::Microseconds);
+ schema.AddKeyFormat("key with nanoseconds", MS::Format::Nanoseconds);
+ schema.AddKeyFormat("key with bytes", MS::Format::Bytes);
+ schema.AddKeyFormat("key with percentage", MS::Format::Percentage);
+ schema.AddKeyFormat("key with integer", MS::Format::Integer);
+ schema.AddKeyFormat("key with decimal", MS::Format::Decimal);
+ schema.AddStaticLabelValue("static label", "static value");
+ return schema;
+ }
+ };
+ EXPECT_TRUE(
+ profiler_add_marker("Gtest custom marker", geckoprofiler::category::OTHER,
+ MarkerTiming::Interval(ts1, ts2), GtestMarker{}, 42,
+ 43.0, "gtest text", "gtest unique text", ts1));
+
+ // User-defined marker type with no data, special frontend schema.
+ struct GtestSpecialMarker {
+ static constexpr Span<const char> MarkerTypeName() {
+ return MakeStringSpan("markers-gtest-special");
+ }
+ static void StreamJSONMarkerData(
+ mozilla::baseprofiler::SpliceableJSONWriter& aWriter) {}
+ static mozilla::MarkerSchema MarkerTypeDisplay() {
+ return mozilla::MarkerSchema::SpecialFrontendLocation{};
+ }
+ };
+ EXPECT_TRUE(profiler_add_marker("Gtest special marker",
+ geckoprofiler::category::OTHER, {},
+ GtestSpecialMarker{}));
+
+ // User-defined marker type that is never used, so it shouldn't appear in the
+ // output.
+ struct GtestUnusedMarker {
+ static constexpr Span<const char> MarkerTypeName() {
+ return MakeStringSpan("markers-gtest-unused");
+ }
+ static void StreamJSONMarkerData(
+ mozilla::baseprofiler::SpliceableJSONWriter& aWriter) {}
+ static mozilla::MarkerSchema MarkerTypeDisplay() {
+ return mozilla::MarkerSchema::SpecialFrontendLocation{};
+ }
+ };
+
+ // Make sure the compiler doesn't complain about this unused struct.
+ mozilla::Unused << GtestUnusedMarker{};
+
+ // Other markers in alphabetical order of payload class names.
+
+ nsCOMPtr<nsIURI> uri;
+ ASSERT_TRUE(
+ NS_SUCCEEDED(NS_NewURI(getter_AddRefs(uri), "http://mozilla.org/"_ns)));
+ // The marker name will be "Load <aChannelId>: <aURI>".
+ profiler_add_network_marker(
+ /* nsIURI* aURI */ uri,
+ /* const nsACString& aRequestMethod */ "GET"_ns,
+ /* int32_t aPriority */ 34,
+ /* uint64_t aChannelId */ 1,
+ /* NetworkLoadType aType */ net::NetworkLoadType::LOAD_START,
+ /* mozilla::TimeStamp aStart */ ts1,
+ /* mozilla::TimeStamp aEnd */ ts2,
+ /* int64_t aCount */ 56,
+ /* mozilla::net::CacheDisposition aCacheDisposition */
+ net::kCacheHit,
+ /* uint64_t aInnerWindowID */ 78,
+ /* bool aIsPrivateBrowsing */ false
+ /* const mozilla::net::TimingStruct* aTimings = nullptr */
+ /* mozilla::UniquePtr<mozilla::ProfileChunkedBuffer> aSource =
+ nullptr */
+ /* const mozilla::Maybe<nsDependentCString>& aContentType =
+ mozilla::Nothing() */
+ /* nsIURI* aRedirectURI = nullptr */
+ /* uint64_t aRedirectChannelId = 0 */
+ );
+
+ profiler_add_network_marker(
+ /* nsIURI* aURI */ uri,
+ /* const nsACString& aRequestMethod */ "GET"_ns,
+ /* int32_t aPriority */ 34,
+ /* uint64_t aChannelId */ 2,
+ /* NetworkLoadType aType */ net::NetworkLoadType::LOAD_STOP,
+ /* mozilla::TimeStamp aStart */ ts1,
+ /* mozilla::TimeStamp aEnd */ ts2,
+ /* int64_t aCount */ 56,
+ /* mozilla::net::CacheDisposition aCacheDisposition */
+ net::kCacheUnresolved,
+ /* uint64_t aInnerWindowID */ 78,
+ /* bool aIsPrivateBrowsing */ false,
+ /* const mozilla::net::TimingStruct* aTimings = nullptr */ nullptr,
+ /* mozilla::UniquePtr<mozilla::ProfileChunkedBuffer> aSource =
+ nullptr */
+ nullptr,
+ /* const mozilla::Maybe<nsDependentCString>& aContentType =
+ mozilla::Nothing() */
+ Some(nsDependentCString("text/html")),
+ /* nsIURI* aRedirectURI = nullptr */ nullptr,
+ /* uint64_t aRedirectChannelId = 0 */ 0);
+
+ nsCOMPtr<nsIURI> redirectURI;
+ ASSERT_TRUE(NS_SUCCEEDED(
+ NS_NewURI(getter_AddRefs(redirectURI), "http://example.com/"_ns)));
+ profiler_add_network_marker(
+ /* nsIURI* aURI */ uri,
+ /* const nsACString& aRequestMethod */ "GET"_ns,
+ /* int32_t aPriority */ 34,
+ /* uint64_t aChannelId */ 3,
+ /* NetworkLoadType aType */ net::NetworkLoadType::LOAD_REDIRECT,
+ /* mozilla::TimeStamp aStart */ ts1,
+ /* mozilla::TimeStamp aEnd */ ts2,
+ /* int64_t aCount */ 56,
+ /* mozilla::net::CacheDisposition aCacheDisposition */
+ net::kCacheUnresolved,
+ /* uint64_t aInnerWindowID */ 78,
+ /* bool aIsPrivateBrowsing */ false,
+ /* const mozilla::net::TimingStruct* aTimings = nullptr */ nullptr,
+ /* mozilla::UniquePtr<mozilla::ProfileChunkedBuffer> aSource =
+ nullptr */
+ nullptr,
+ /* const mozilla::Maybe<nsDependentCString>& aContentType =
+ mozilla::Nothing() */
+ mozilla::Nothing(),
+ /* nsIURI* aRedirectURI = nullptr */ redirectURI,
+ /* uint32_t aRedirectFlags = 0 */
+ nsIChannelEventSink::REDIRECT_TEMPORARY,
+ /* uint64_t aRedirectChannelId = 0 */ 103);
+
+ profiler_add_network_marker(
+ /* nsIURI* aURI */ uri,
+ /* const nsACString& aRequestMethod */ "GET"_ns,
+ /* int32_t aPriority */ 34,
+ /* uint64_t aChannelId */ 4,
+ /* NetworkLoadType aType */ net::NetworkLoadType::LOAD_REDIRECT,
+ /* mozilla::TimeStamp aStart */ ts1,
+ /* mozilla::TimeStamp aEnd */ ts2,
+ /* int64_t aCount */ 56,
+ /* mozilla::net::CacheDisposition aCacheDisposition */
+ net::kCacheUnresolved,
+ /* uint64_t aInnerWindowID */ 78,
+ /* bool aIsPrivateBrowsing */ false,
+ /* const mozilla::net::TimingStruct* aTimings = nullptr */ nullptr,
+ /* mozilla::UniquePtr<mozilla::ProfileChunkedBuffer> aSource =
+ nullptr */
+ nullptr,
+ /* const mozilla::Maybe<nsDependentCString>& aContentType =
+ mozilla::Nothing() */
+ mozilla::Nothing(),
+ /* nsIURI* aRedirectURI = nullptr */ redirectURI,
+ /* uint32_t aRedirectFlags = 0 */
+ nsIChannelEventSink::REDIRECT_PERMANENT,
+ /* uint64_t aRedirectChannelId = 0 */ 104);
+
+ profiler_add_network_marker(
+ /* nsIURI* aURI */ uri,
+ /* const nsACString& aRequestMethod */ "GET"_ns,
+ /* int32_t aPriority */ 34,
+ /* uint64_t aChannelId */ 5,
+ /* NetworkLoadType aType */ net::NetworkLoadType::LOAD_REDIRECT,
+ /* mozilla::TimeStamp aStart */ ts1,
+ /* mozilla::TimeStamp aEnd */ ts2,
+ /* int64_t aCount */ 56,
+ /* mozilla::net::CacheDisposition aCacheDisposition */
+ net::kCacheUnresolved,
+ /* uint64_t aInnerWindowID */ 78,
+ /* bool aIsPrivateBrowsing */ false,
+ /* const mozilla::net::TimingStruct* aTimings = nullptr */ nullptr,
+ /* mozilla::UniquePtr<mozilla::ProfileChunkedBuffer> aSource =
+ nullptr */
+ nullptr,
+ /* const mozilla::Maybe<nsDependentCString>& aContentType =
+ mozilla::Nothing() */
+ mozilla::Nothing(),
+ /* nsIURI* aRedirectURI = nullptr */ redirectURI,
+ /* uint32_t aRedirectFlags = 0 */ nsIChannelEventSink::REDIRECT_INTERNAL,
+ /* uint64_t aRedirectChannelId = 0 */ 105);
+
+ profiler_add_network_marker(
+ /* nsIURI* aURI */ uri,
+ /* const nsACString& aRequestMethod */ "GET"_ns,
+ /* int32_t aPriority */ 34,
+ /* uint64_t aChannelId */ 6,
+ /* NetworkLoadType aType */ net::NetworkLoadType::LOAD_REDIRECT,
+ /* mozilla::TimeStamp aStart */ ts1,
+ /* mozilla::TimeStamp aEnd */ ts2,
+ /* int64_t aCount */ 56,
+ /* mozilla::net::CacheDisposition aCacheDisposition */
+ net::kCacheUnresolved,
+ /* uint64_t aInnerWindowID */ 78,
+ /* bool aIsPrivateBrowsing */ false,
+ /* const mozilla::net::TimingStruct* aTimings = nullptr */ nullptr,
+ /* mozilla::UniquePtr<mozilla::ProfileChunkedBuffer> aSource =
+ nullptr */
+ nullptr,
+ /* const mozilla::Maybe<nsDependentCString>& aContentType =
+ mozilla::Nothing() */
+ mozilla::Nothing(),
+ /* nsIURI* aRedirectURI = nullptr */ redirectURI,
+ /* uint32_t aRedirectFlags = 0 */ nsIChannelEventSink::REDIRECT_INTERNAL |
+ nsIChannelEventSink::REDIRECT_STS_UPGRADE,
+ /* uint64_t aRedirectChannelId = 0 */ 106);
+ profiler_add_network_marker(
+ /* nsIURI* aURI */ uri,
+ /* const nsACString& aRequestMethod */ "GET"_ns,
+ /* int32_t aPriority */ 34,
+ /* uint64_t aChannelId */ 7,
+ /* NetworkLoadType aType */ net::NetworkLoadType::LOAD_START,
+ /* mozilla::TimeStamp aStart */ ts1,
+ /* mozilla::TimeStamp aEnd */ ts2,
+ /* int64_t aCount */ 56,
+ /* mozilla::net::CacheDisposition aCacheDisposition */
+ net::kCacheUnresolved,
+ /* uint64_t aInnerWindowID */ 78,
+ /* bool aIsPrivateBrowsing */ true
+ /* const mozilla::net::TimingStruct* aTimings = nullptr */
+ /* mozilla::UniquePtr<mozilla::ProfileChunkedBuffer> aSource =
+ nullptr */
+ /* const mozilla::Maybe<nsDependentCString>& aContentType =
+ mozilla::Nothing() */
+ /* nsIURI* aRedirectURI = nullptr */
+ /* uint64_t aRedirectChannelId = 0 */
+ );
+
+ EXPECT_TRUE(profiler_add_marker(
+ "Text in main thread with stack", geckoprofiler::category::OTHER,
+ {MarkerStack::Capture(), MarkerTiming::Interval(ts1, ts2)},
+ geckoprofiler::markers::TextMarker{}, ""));
+ EXPECT_TRUE(profiler_add_marker(
+ "Text from main thread with stack", geckoprofiler::category::OTHER,
+ MarkerOptions(MarkerThreadId::MainThread(), MarkerStack::Capture()),
+ geckoprofiler::markers::TextMarker{}, ""));
+
+ std::thread registeredThread([]() {
+ AUTO_PROFILER_REGISTER_THREAD("Marker test sub-thread");
+ // Marker in non-profiled thread won't be stored.
+ EXPECT_FALSE(profiler_add_marker(
+ "Text in registered thread with stack", geckoprofiler::category::OTHER,
+ MarkerStack::Capture(), geckoprofiler::markers::TextMarker{}, ""));
+ // Marker will be stored in main thread, with stack from registered thread.
+ EXPECT_TRUE(profiler_add_marker(
+ "Text from registered thread with stack",
+ geckoprofiler::category::OTHER,
+ MarkerOptions(MarkerThreadId::MainThread(), MarkerStack::Capture()),
+ geckoprofiler::markers::TextMarker{}, ""));
+ });
+ registeredThread.join();
+
+ std::thread unregisteredThread([]() {
+ // Marker in unregistered thread won't be stored.
+ EXPECT_FALSE(profiler_add_marker("Text in unregistered thread with stack",
+ geckoprofiler::category::OTHER,
+ MarkerStack::Capture(),
+ geckoprofiler::markers::TextMarker{}, ""));
+ // Marker will be stored in main thread, but stack cannot be captured in an
+ // unregistered thread.
+ EXPECT_TRUE(profiler_add_marker(
+ "Text from unregistered thread with stack",
+ geckoprofiler::category::OTHER,
+ MarkerOptions(MarkerThreadId::MainThread(), MarkerStack::Capture()),
+ geckoprofiler::markers::TextMarker{}, ""));
+ });
+ unregisteredThread.join();
+
+ EXPECT_TRUE(profiler_add_marker("Tracing", geckoprofiler::category::OTHER, {},
+ geckoprofiler::markers::Tracing{},
+ "category"));
+
+ EXPECT_TRUE(profiler_add_marker("Text", geckoprofiler::category::OTHER, {},
+ geckoprofiler::markers::TextMarker{},
+ "Text text"));
+
+ // Ensure that we evaluate to false for markers with very long texts by
+ // testing against a ~3mb string. A string of this size should exceed the
+ // available buffer chunks (max: 2) that are available and be discarded.
+ EXPECT_FALSE(profiler_add_marker("Text", geckoprofiler::category::OTHER, {},
+ geckoprofiler::markers::TextMarker{},
+ std::string(3 * 1024 * 1024, 'x')));
+
+ EXPECT_TRUE(profiler_add_marker(
+ "MediaSample", geckoprofiler::category::OTHER, {},
+ geckoprofiler::markers::MediaSampleMarker{}, 123, 456, 789));
+
+ SpliceableChunkedJSONWriter w{FailureLatchInfallibleSource::Singleton()};
+ w.Start();
+ EXPECT_TRUE(::profiler_stream_json_for_this_process(w).isOk());
+ w.End();
+
+ EXPECT_FALSE(w.Failed());
+
+ UniquePtr<char[]> profile = w.ChunkedWriteFunc().CopyData();
+ ASSERT_TRUE(!!profile.get());
+
+ // Expected markers, in order.
+ enum State {
+ S_tracing_event,
+ S_tracing_start,
+ S_tracing_end,
+ S_tracing_event_with_stack,
+ S_tracing_auto_tracing_start,
+ S_tracing_auto_tracing_end,
+ S_M1,
+ S_M3,
+ S_Markers2DefaultEmptyOptions,
+ S_Markers2DefaultWithOptions,
+ S_Markers2ExplicitDefaultEmptyOptions,
+ S_Markers2ExplicitDefaultWithOptions,
+ S_FirstMarker,
+ S_CustomMarker,
+ S_SpecialMarker,
+ S_NetworkMarkerPayload_start,
+ S_NetworkMarkerPayload_stop,
+ S_NetworkMarkerPayload_redirect_temporary,
+ S_NetworkMarkerPayload_redirect_permanent,
+ S_NetworkMarkerPayload_redirect_internal,
+ S_NetworkMarkerPayload_redirect_internal_sts,
+ S_NetworkMarkerPayload_private_browsing,
+
+ S_TextWithStack,
+ S_TextToMTWithStack,
+ S_RegThread_TextToMTWithStack,
+ S_UnregThread_TextToMTWithStack,
+
+ S_LAST,
+ } state = State(0);
+
+ // These will be set when first read from S_FirstMarker, then
+ // compared in following markers.
+ // TODO: Compute these values from the timestamps.
+ double ts1Double = 0.0;
+ double ts2Double = 0.0;
+
+ JSONOutputCheck(profile.get(), [&](const Json::Value& root) {
+ {
+ GET_JSON(threads, root["threads"], Array);
+ ASSERT_EQ(threads.size(), 1u);
+
+ {
+ GET_JSON(thread0, threads[0], Object);
+
+ // Keep a reference to the string table in this block, it will be used
+ // below.
+ GET_JSON(stringTable, thread0["stringTable"], Array);
+ ASSERT_TRUE(stringTable.isArray());
+
+ // Test the expected labels in the string table.
+ bool foundEmpty = false;
+ bool foundOkstr1 = false;
+ bool foundOkstr2 = false;
+ const std::string okstr2Label = std::string("okstr2 ") + okstr2.get();
+ bool foundTooLong = false;
+ for (const auto& s : stringTable) {
+ ASSERT_TRUE(s.isString());
+ std::string sString = s.asString();
+ if (sString.empty()) {
+ EXPECT_FALSE(foundEmpty);
+ foundEmpty = true;
+ } else if (sString == okstr1.get()) {
+ EXPECT_FALSE(foundOkstr1);
+ foundOkstr1 = true;
+ } else if (sString == okstr2Label) {
+ EXPECT_FALSE(foundOkstr2);
+ foundOkstr2 = true;
+ } else if (sString == longstrCut.get()) {
+ EXPECT_FALSE(foundTooLong);
+ foundTooLong = true;
+ } else {
+ EXPECT_NE(sString, longstr.get());
+ }
+ }
+ EXPECT_TRUE(foundEmpty);
+ EXPECT_TRUE(foundOkstr1);
+ EXPECT_TRUE(foundOkstr2);
+ EXPECT_TRUE(foundTooLong);
+
+ {
+ GET_JSON(markers, thread0["markers"], Object);
+
+ {
+ GET_JSON(data, markers["data"], Array);
+
+ for (const Json::Value& marker : data) {
+ // Name the indexes into the marker tuple:
+ // [name, startTime, endTime, phase, category, payload]
+ const unsigned int NAME = 0u;
+ const unsigned int START_TIME = 1u;
+ const unsigned int END_TIME = 2u;
+ const unsigned int PHASE = 3u;
+ const unsigned int CATEGORY = 4u;
+ const unsigned int PAYLOAD = 5u;
+
+ const unsigned int PHASE_INSTANT = 0;
+ const unsigned int PHASE_INTERVAL = 1;
+ const unsigned int PHASE_START = 2;
+ const unsigned int PHASE_END = 3;
+
+ const unsigned int SIZE_WITHOUT_PAYLOAD = 5u;
+ const unsigned int SIZE_WITH_PAYLOAD = 6u;
+
+ ASSERT_TRUE(marker.isArray());
+ // The payload is optional.
+ ASSERT_GE(marker.size(), SIZE_WITHOUT_PAYLOAD);
+ ASSERT_LE(marker.size(), SIZE_WITH_PAYLOAD);
+
+ // root.threads[0].markers.data[i] is an array with 5 or 6
+ // elements.
+
+ ASSERT_TRUE(marker[NAME].isUInt()); // name id
+ GET_JSON(name, stringTable[marker[NAME].asUInt()], String);
+ std::string nameString = name.asString();
+
+ EXPECT_TRUE(marker[START_TIME].isNumeric());
+ EXPECT_TRUE(marker[END_TIME].isNumeric());
+ EXPECT_TRUE(marker[PHASE].isUInt());
+ EXPECT_TRUE(marker[PHASE].asUInt() < 4);
+ EXPECT_TRUE(marker[CATEGORY].isUInt());
+
+# define EXPECT_TIMING_INSTANT \
+ EXPECT_NE(marker[START_TIME].asDouble(), 0); \
+ EXPECT_EQ(marker[END_TIME].asDouble(), 0); \
+ EXPECT_EQ(marker[PHASE].asUInt(), PHASE_INSTANT);
+# define EXPECT_TIMING_INTERVAL \
+ EXPECT_NE(marker[START_TIME].asDouble(), 0); \
+ EXPECT_NE(marker[END_TIME].asDouble(), 0); \
+ EXPECT_EQ(marker[PHASE].asUInt(), PHASE_INTERVAL);
+# define EXPECT_TIMING_START \
+ EXPECT_NE(marker[START_TIME].asDouble(), 0); \
+ EXPECT_EQ(marker[END_TIME].asDouble(), 0); \
+ EXPECT_EQ(marker[PHASE].asUInt(), PHASE_START);
+# define EXPECT_TIMING_END \
+ EXPECT_EQ(marker[START_TIME].asDouble(), 0); \
+ EXPECT_NE(marker[END_TIME].asDouble(), 0); \
+ EXPECT_EQ(marker[PHASE].asUInt(), PHASE_END);
+
+# define EXPECT_TIMING_INSTANT_AT(t) \
+ EXPECT_EQ(marker[START_TIME].asDouble(), t); \
+ EXPECT_EQ(marker[END_TIME].asDouble(), 0); \
+ EXPECT_EQ(marker[PHASE].asUInt(), PHASE_INSTANT);
+# define EXPECT_TIMING_INTERVAL_AT(start, end) \
+ EXPECT_EQ(marker[START_TIME].asDouble(), start); \
+ EXPECT_EQ(marker[END_TIME].asDouble(), end); \
+ EXPECT_EQ(marker[PHASE].asUInt(), PHASE_INTERVAL);
+# define EXPECT_TIMING_START_AT(start) \
+ EXPECT_EQ(marker[START_TIME].asDouble(), start); \
+ EXPECT_EQ(marker[END_TIME].asDouble(), 0); \
+ EXPECT_EQ(marker[PHASE].asUInt(), PHASE_START);
+# define EXPECT_TIMING_END_AT(end) \
+ EXPECT_EQ(marker[START_TIME].asDouble(), 0); \
+ EXPECT_EQ(marker[END_TIME].asDouble(), end); \
+ EXPECT_EQ(marker[PHASE].asUInt(), PHASE_END);
+
+ if (marker.size() == SIZE_WITHOUT_PAYLOAD) {
+ // root.threads[0].markers.data[i] is an array with 5 elements,
+ // so there is no payload.
+ if (nameString == "M1") {
+ ASSERT_EQ(state, S_M1);
+ state = State(state + 1);
+ } else if (nameString == "M3") {
+ ASSERT_EQ(state, S_M3);
+ state = State(state + 1);
+ } else if (nameString ==
+ "default-templated markers 2.0 with empty options") {
+ EXPECT_EQ(state, S_Markers2DefaultEmptyOptions);
+ state = State(S_Markers2DefaultEmptyOptions + 1);
+// TODO: Re-enable this when bug 1646714 lands, and check for stack.
+# if 0
+ } else if (nameString ==
+ "default-templated markers 2.0 with option") {
+ EXPECT_EQ(state, S_Markers2DefaultWithOptions);
+ state = State(S_Markers2DefaultWithOptions + 1);
+# endif
+ } else if (nameString ==
+ "explicitly-default-templated markers 2.0 with "
+ "empty "
+ "options") {
+ EXPECT_EQ(state, S_Markers2ExplicitDefaultEmptyOptions);
+ state = State(S_Markers2ExplicitDefaultEmptyOptions + 1);
+ } else if (nameString ==
+ "explicitly-default-templated markers 2.0 with "
+ "option") {
+ EXPECT_EQ(state, S_Markers2ExplicitDefaultWithOptions);
+ state = State(S_Markers2ExplicitDefaultWithOptions + 1);
+ }
+ } else {
+ // root.threads[0].markers.data[i] is an array with 6 elements,
+ // so there is a payload.
+ GET_JSON(payload, marker[PAYLOAD], Object);
+
+ // root.threads[0].markers.data[i][PAYLOAD] is an object
+ // (payload).
+
+ // It should at least have a "type" string.
+ GET_JSON(type, payload["type"], String);
+ std::string typeString = type.asString();
+
+ if (nameString == "tracing event") {
+ EXPECT_EQ(state, S_tracing_event);
+ state = State(S_tracing_event + 1);
+ EXPECT_EQ(typeString, "tracing");
+ EXPECT_TIMING_INSTANT;
+ EXPECT_EQ_JSON(payload["category"], String, "A");
+ EXPECT_TRUE(payload["stack"].isNull());
+
+ } else if (nameString == "tracing start") {
+ EXPECT_EQ(state, S_tracing_start);
+ state = State(S_tracing_start + 1);
+ EXPECT_EQ(typeString, "tracing");
+ EXPECT_TIMING_START;
+ EXPECT_EQ_JSON(payload["category"], String, "A");
+ EXPECT_TRUE(payload["stack"].isNull());
+
+ } else if (nameString == "tracing end") {
+ EXPECT_EQ(state, S_tracing_end);
+ state = State(S_tracing_end + 1);
+ EXPECT_EQ(typeString, "tracing");
+ EXPECT_TIMING_END;
+ EXPECT_EQ_JSON(payload["category"], String, "A");
+ EXPECT_TRUE(payload["stack"].isNull());
+
+ } else if (nameString == "tracing event with stack") {
+ EXPECT_EQ(state, S_tracing_event_with_stack);
+ state = State(S_tracing_event_with_stack + 1);
+ EXPECT_EQ(typeString, "tracing");
+ EXPECT_TIMING_INSTANT;
+ EXPECT_EQ_JSON(payload["category"], String, "B");
+ EXPECT_TRUE(payload["stack"].isObject());
+
+ } else if (nameString == "auto tracing") {
+ switch (state) {
+ case S_tracing_auto_tracing_start:
+ state = State(S_tracing_auto_tracing_start + 1);
+ EXPECT_EQ(typeString, "tracing");
+ EXPECT_TIMING_START;
+ EXPECT_EQ_JSON(payload["category"], String, "C");
+ EXPECT_TRUE(payload["stack"].isNull());
+ break;
+ case S_tracing_auto_tracing_end:
+ state = State(S_tracing_auto_tracing_end + 1);
+ EXPECT_EQ(typeString, "tracing");
+ EXPECT_TIMING_END;
+ EXPECT_EQ_JSON(payload["category"], String, "C");
+ ASSERT_TRUE(payload["stack"].isNull());
+ break;
+ default:
+ EXPECT_TRUE(state == S_tracing_auto_tracing_start ||
+ state == S_tracing_auto_tracing_end);
+ break;
+ }
+
+ } else if (nameString ==
+ "default-templated markers 2.0 with option") {
+ // TODO: Remove this when bug 1646714 lands.
+ EXPECT_EQ(state, S_Markers2DefaultWithOptions);
+ state = State(S_Markers2DefaultWithOptions + 1);
+ EXPECT_EQ(typeString, "NoPayloadUserData");
+ EXPECT_FALSE(payload["stack"].isNull());
+
+ } else if (nameString == "FirstMarker") {
+ // Record start and end times, to compare with timestamps in
+ // following markers.
+ EXPECT_EQ(state, S_FirstMarker);
+ ts1Double = marker[START_TIME].asDouble();
+ ts2Double = marker[END_TIME].asDouble();
+ state = State(S_FirstMarker + 1);
+ EXPECT_EQ(typeString, "Text");
+ EXPECT_EQ_JSON(payload["name"], String, "First Marker");
+
+ } else if (nameString == "Gtest custom marker") {
+ EXPECT_EQ(state, S_CustomMarker);
+ state = State(S_CustomMarker + 1);
+ EXPECT_EQ(typeString, "markers-gtest");
+ EXPECT_EQ(payload.size(), 1u + 9u);
+ EXPECT_TRUE(payload["null"].isNull());
+ EXPECT_EQ_JSON(payload["bool-false"], Bool, false);
+ EXPECT_EQ_JSON(payload["bool-true"], Bool, true);
+ EXPECT_EQ_JSON(payload["int"], Int64, 42);
+ EXPECT_EQ_JSON(payload["double"], Double, 43.0);
+ EXPECT_EQ_JSON(payload["text"], String, "gtest text");
+ // Unique strings can be fetched from the string table.
+ ASSERT_TRUE(payload["unique text"].isUInt());
+ auto textIndex = payload["unique text"].asUInt();
+ GET_JSON(uniqueText, stringTable[textIndex], String);
+ ASSERT_TRUE(uniqueText.isString());
+ ASSERT_EQ(uniqueText.asString(), "gtest unique text");
+ // The duplicate unique text should have the exact same index.
+ EXPECT_EQ_JSON(payload["unique text again"], UInt, textIndex);
+ EXPECT_EQ_JSON(payload["time"], Double, ts1Double);
+
+ } else if (nameString == "Gtest special marker") {
+ EXPECT_EQ(state, S_SpecialMarker);
+ state = State(S_SpecialMarker + 1);
+ EXPECT_EQ(typeString, "markers-gtest-special");
+ EXPECT_EQ(payload.size(), 1u) << "Only 'type' in the payload";
+
+ } else if (nameString == "Load 1: http://mozilla.org/") {
+ EXPECT_EQ(state, S_NetworkMarkerPayload_start);
+ state = State(S_NetworkMarkerPayload_start + 1);
+ EXPECT_EQ(typeString, "Network");
+ EXPECT_EQ_JSON(payload["startTime"], Double, ts1Double);
+ EXPECT_EQ_JSON(payload["endTime"], Double, ts2Double);
+ EXPECT_EQ_JSON(payload["id"], Int64, 1);
+ EXPECT_EQ_JSON(payload["URI"], String, "http://mozilla.org/");
+ EXPECT_EQ_JSON(payload["requestMethod"], String, "GET");
+ EXPECT_EQ_JSON(payload["pri"], Int64, 34);
+ EXPECT_EQ_JSON(payload["count"], Int64, 56);
+ EXPECT_EQ_JSON(payload["cache"], String, "Hit");
+ EXPECT_TRUE(payload["isPrivateBrowsing"].isNull());
+ EXPECT_TRUE(payload["RedirectURI"].isNull());
+ EXPECT_TRUE(payload["redirectType"].isNull());
+ EXPECT_TRUE(payload["isHttpToHttpsRedirect"].isNull());
+ EXPECT_TRUE(payload["redirectId"].isNull());
+ EXPECT_TRUE(payload["contentType"].isNull());
+
+ } else if (nameString == "Load 2: http://mozilla.org/") {
+ EXPECT_EQ(state, S_NetworkMarkerPayload_stop);
+ state = State(S_NetworkMarkerPayload_stop + 1);
+ EXPECT_EQ(typeString, "Network");
+ EXPECT_EQ_JSON(payload["startTime"], Double, ts1Double);
+ EXPECT_EQ_JSON(payload["endTime"], Double, ts2Double);
+ EXPECT_EQ_JSON(payload["id"], Int64, 2);
+ EXPECT_EQ_JSON(payload["URI"], String, "http://mozilla.org/");
+ EXPECT_EQ_JSON(payload["requestMethod"], String, "GET");
+ EXPECT_EQ_JSON(payload["pri"], Int64, 34);
+ EXPECT_EQ_JSON(payload["count"], Int64, 56);
+ EXPECT_EQ_JSON(payload["cache"], String, "Unresolved");
+ EXPECT_TRUE(payload["isPrivateBrowsing"].isNull());
+ EXPECT_TRUE(payload["RedirectURI"].isNull());
+ EXPECT_TRUE(payload["redirectType"].isNull());
+ EXPECT_TRUE(payload["isHttpToHttpsRedirect"].isNull());
+ EXPECT_TRUE(payload["redirectId"].isNull());
+ EXPECT_EQ_JSON(payload["contentType"], String, "text/html");
+
+ } else if (nameString == "Load 3: http://mozilla.org/") {
+ EXPECT_EQ(state, S_NetworkMarkerPayload_redirect_temporary);
+ state = State(S_NetworkMarkerPayload_redirect_temporary + 1);
+ EXPECT_EQ(typeString, "Network");
+ EXPECT_EQ_JSON(payload["startTime"], Double, ts1Double);
+ EXPECT_EQ_JSON(payload["endTime"], Double, ts2Double);
+ EXPECT_EQ_JSON(payload["id"], Int64, 3);
+ EXPECT_EQ_JSON(payload["URI"], String, "http://mozilla.org/");
+ EXPECT_EQ_JSON(payload["requestMethod"], String, "GET");
+ EXPECT_EQ_JSON(payload["pri"], Int64, 34);
+ EXPECT_EQ_JSON(payload["count"], Int64, 56);
+ EXPECT_EQ_JSON(payload["cache"], String, "Unresolved");
+ EXPECT_TRUE(payload["isPrivateBrowsing"].isNull());
+ EXPECT_EQ_JSON(payload["RedirectURI"], String,
+ "http://example.com/");
+ EXPECT_EQ_JSON(payload["redirectType"], String, "Temporary");
+ EXPECT_EQ_JSON(payload["isHttpToHttpsRedirect"], Bool, false);
+ EXPECT_EQ_JSON(payload["redirectId"], Int64, 103);
+ EXPECT_TRUE(payload["contentType"].isNull());
+
+ } else if (nameString == "Load 4: http://mozilla.org/") {
+ EXPECT_EQ(state, S_NetworkMarkerPayload_redirect_permanent);
+ state = State(S_NetworkMarkerPayload_redirect_permanent + 1);
+ EXPECT_EQ(typeString, "Network");
+ EXPECT_EQ_JSON(payload["startTime"], Double, ts1Double);
+ EXPECT_EQ_JSON(payload["endTime"], Double, ts2Double);
+ EXPECT_EQ_JSON(payload["id"], Int64, 4);
+ EXPECT_EQ_JSON(payload["URI"], String, "http://mozilla.org/");
+ EXPECT_EQ_JSON(payload["requestMethod"], String, "GET");
+ EXPECT_EQ_JSON(payload["pri"], Int64, 34);
+ EXPECT_EQ_JSON(payload["count"], Int64, 56);
+ EXPECT_EQ_JSON(payload["cache"], String, "Unresolved");
+ EXPECT_TRUE(payload["isPrivateBrowsing"].isNull());
+ EXPECT_EQ_JSON(payload["RedirectURI"], String,
+ "http://example.com/");
+ EXPECT_EQ_JSON(payload["redirectType"], String, "Permanent");
+ EXPECT_EQ_JSON(payload["isHttpToHttpsRedirect"], Bool, false);
+ EXPECT_EQ_JSON(payload["redirectId"], Int64, 104);
+ EXPECT_TRUE(payload["contentType"].isNull());
+
+ } else if (nameString == "Load 5: http://mozilla.org/") {
+ EXPECT_EQ(state, S_NetworkMarkerPayload_redirect_internal);
+ state = State(S_NetworkMarkerPayload_redirect_internal + 1);
+ EXPECT_EQ(typeString, "Network");
+ EXPECT_EQ_JSON(payload["startTime"], Double, ts1Double);
+ EXPECT_EQ_JSON(payload["endTime"], Double, ts2Double);
+ EXPECT_EQ_JSON(payload["id"], Int64, 5);
+ EXPECT_EQ_JSON(payload["URI"], String, "http://mozilla.org/");
+ EXPECT_EQ_JSON(payload["requestMethod"], String, "GET");
+ EXPECT_EQ_JSON(payload["pri"], Int64, 34);
+ EXPECT_EQ_JSON(payload["count"], Int64, 56);
+ EXPECT_EQ_JSON(payload["cache"], String, "Unresolved");
+ EXPECT_TRUE(payload["isPrivateBrowsing"].isNull());
+ EXPECT_EQ_JSON(payload["RedirectURI"], String,
+ "http://example.com/");
+ EXPECT_EQ_JSON(payload["redirectType"], String, "Internal");
+ EXPECT_EQ_JSON(payload["isHttpToHttpsRedirect"], Bool, false);
+ EXPECT_EQ_JSON(payload["redirectId"], Int64, 105);
+ EXPECT_TRUE(payload["contentType"].isNull());
+
+ } else if (nameString == "Load 6: http://mozilla.org/") {
+ EXPECT_EQ(state,
+ S_NetworkMarkerPayload_redirect_internal_sts);
+ state =
+ State(S_NetworkMarkerPayload_redirect_internal_sts + 1);
+ EXPECT_EQ(typeString, "Network");
+ EXPECT_EQ_JSON(payload["startTime"], Double, ts1Double);
+ EXPECT_EQ_JSON(payload["endTime"], Double, ts2Double);
+ EXPECT_EQ_JSON(payload["id"], Int64, 6);
+ EXPECT_EQ_JSON(payload["URI"], String, "http://mozilla.org/");
+ EXPECT_EQ_JSON(payload["requestMethod"], String, "GET");
+ EXPECT_EQ_JSON(payload["pri"], Int64, 34);
+ EXPECT_EQ_JSON(payload["count"], Int64, 56);
+ EXPECT_EQ_JSON(payload["cache"], String, "Unresolved");
+ EXPECT_TRUE(payload["isPrivateBrowsing"].isNull());
+ EXPECT_EQ_JSON(payload["RedirectURI"], String,
+ "http://example.com/");
+ EXPECT_EQ_JSON(payload["redirectType"], String, "Internal");
+ EXPECT_EQ_JSON(payload["isHttpToHttpsRedirect"], Bool, true);
+ EXPECT_EQ_JSON(payload["redirectId"], Int64, 106);
+ EXPECT_TRUE(payload["contentType"].isNull());
+
+ } else if (nameString == "Load 7: http://mozilla.org/") {
+ EXPECT_EQ(state, S_NetworkMarkerPayload_private_browsing);
+ state = State(S_NetworkMarkerPayload_private_browsing + 1);
+ EXPECT_EQ(typeString, "Network");
+ EXPECT_EQ_JSON(payload["startTime"], Double, ts1Double);
+ EXPECT_EQ_JSON(payload["endTime"], Double, ts2Double);
+ EXPECT_EQ_JSON(payload["id"], Int64, 7);
+ EXPECT_EQ_JSON(payload["URI"], String, "http://mozilla.org/");
+ EXPECT_EQ_JSON(payload["requestMethod"], String, "GET");
+ EXPECT_EQ_JSON(payload["pri"], Int64, 34);
+ EXPECT_EQ_JSON(payload["count"], Int64, 56);
+ EXPECT_EQ_JSON(payload["cache"], String, "Unresolved");
+ EXPECT_EQ_JSON(payload["isPrivateBrowsing"], Bool, true);
+ EXPECT_TRUE(payload["RedirectURI"].isNull());
+ EXPECT_TRUE(payload["redirectType"].isNull());
+ EXPECT_TRUE(payload["isHttpToHttpsRedirect"].isNull());
+ EXPECT_TRUE(payload["redirectId"].isNull());
+ EXPECT_TRUE(payload["contentType"].isNull());
+ } else if (nameString == "Text in main thread with stack") {
+ EXPECT_EQ(state, S_TextWithStack);
+ state = State(S_TextWithStack + 1);
+ EXPECT_EQ(typeString, "Text");
+ EXPECT_FALSE(payload["stack"].isNull());
+ EXPECT_TIMING_INTERVAL_AT(ts1Double, ts2Double);
+ EXPECT_EQ_JSON(payload["name"], String, "");
+
+ } else if (nameString == "Text from main thread with stack") {
+ EXPECT_EQ(state, S_TextToMTWithStack);
+ state = State(S_TextToMTWithStack + 1);
+ EXPECT_EQ(typeString, "Text");
+ EXPECT_FALSE(payload["stack"].isNull());
+ EXPECT_EQ_JSON(payload["name"], String, "");
+
+ } else if (nameString ==
+ "Text in registered thread with stack") {
+ ADD_FAILURE()
+ << "Unexpected 'Text in registered thread with stack'";
+
+ } else if (nameString ==
+ "Text from registered thread with stack") {
+ EXPECT_EQ(state, S_RegThread_TextToMTWithStack);
+ state = State(S_RegThread_TextToMTWithStack + 1);
+ EXPECT_EQ(typeString, "Text");
+ EXPECT_FALSE(payload["stack"].isNull());
+ EXPECT_EQ_JSON(payload["name"], String, "");
+
+ } else if (nameString ==
+ "Text in unregistered thread with stack") {
+ ADD_FAILURE()
+ << "Unexpected 'Text in unregistered thread with stack'";
+
+ } else if (nameString ==
+ "Text from unregistered thread with stack") {
+ EXPECT_EQ(state, S_UnregThread_TextToMTWithStack);
+ state = State(S_UnregThread_TextToMTWithStack + 1);
+ EXPECT_EQ(typeString, "Text");
+ EXPECT_TRUE(payload["stack"].isNull());
+ EXPECT_EQ_JSON(payload["name"], String, "");
+ }
+ } // marker with payload
+ } // for (marker : data)
+ } // markers.data
+ } // markers
+ } // thread0
+ } // threads
+ // We should have read all expected markers.
+ EXPECT_EQ(state, S_LAST);
+
+ {
+ GET_JSON(meta, root["meta"], Object);
+
+ {
+ GET_JSON(markerSchema, meta["markerSchema"], Array);
+
+ std::set<std::string> testedSchemaNames;
+
+ for (const Json::Value& schema : markerSchema) {
+ GET_JSON(name, schema["name"], String);
+ const std::string nameString = name.asString();
+
+ GET_JSON(display, schema["display"], Array);
+
+ GET_JSON(data, schema["data"], Array);
+
+ EXPECT_TRUE(
+ testedSchemaNames
+ .insert(std::string(nameString.data(), nameString.size()))
+ .second)
+ << "Each schema name should be unique (inserted once in the set)";
+
+ if (nameString == "Text") {
+ EXPECT_EQ(display.size(), 2u);
+ EXPECT_EQ(display[0u].asString(), "marker-chart");
+ EXPECT_EQ(display[1u].asString(), "marker-table");
+
+ ASSERT_EQ(data.size(), 1u);
+
+ ASSERT_TRUE(data[0u].isObject());
+ EXPECT_EQ_JSON(data[0u]["key"], String, "name");
+ EXPECT_EQ_JSON(data[0u]["label"], String, "Details");
+ EXPECT_EQ_JSON(data[0u]["format"], String, "string");
+
+ } else if (nameString == "NoPayloadUserData") {
+ // TODO: Remove this when bug 1646714 lands.
+ EXPECT_EQ(display.size(), 2u);
+ EXPECT_EQ(display[0u].asString(), "marker-chart");
+ EXPECT_EQ(display[1u].asString(), "marker-table");
+
+ ASSERT_EQ(data.size(), 0u);
+
+ } else if (nameString == "FileIO") {
+ // These are defined in ProfilerIOInterposeObserver.cpp
+
+ } else if (nameString == "tracing") {
+ EXPECT_EQ(display.size(), 3u);
+ EXPECT_EQ(display[0u].asString(), "marker-chart");
+ EXPECT_EQ(display[1u].asString(), "marker-table");
+ EXPECT_EQ(display[2u].asString(), "timeline-overview");
+
+ ASSERT_EQ(data.size(), 1u);
+
+ ASSERT_TRUE(data[0u].isObject());
+ EXPECT_EQ_JSON(data[0u]["key"], String, "category");
+ EXPECT_EQ_JSON(data[0u]["label"], String, "Type");
+ EXPECT_EQ_JSON(data[0u]["format"], String, "string");
+
+ } else if (nameString == "BHR-detected hang") {
+ EXPECT_EQ(display.size(), 2u);
+ EXPECT_EQ(display[0u].asString(), "marker-chart");
+ EXPECT_EQ(display[1u].asString(), "marker-table");
+
+ ASSERT_EQ(data.size(), 0u);
+
+ } else if (nameString == "MainThreadLongTask") {
+ EXPECT_EQ(display.size(), 2u);
+ EXPECT_EQ(display[0u].asString(), "marker-chart");
+ EXPECT_EQ(display[1u].asString(), "marker-table");
+
+ ASSERT_EQ(data.size(), 1u);
+
+ ASSERT_TRUE(data[0u].isObject());
+ EXPECT_EQ_JSON(data[0u]["key"], String, "category");
+ EXPECT_EQ_JSON(data[0u]["label"], String, "Type");
+ EXPECT_EQ_JSON(data[0u]["format"], String, "string");
+
+ } else if (nameString == "Log") {
+ EXPECT_EQ(display.size(), 1u);
+ EXPECT_EQ(display[0u].asString(), "marker-table");
+
+ ASSERT_EQ(data.size(), 2u);
+
+ ASSERT_TRUE(data[0u].isObject());
+ EXPECT_EQ_JSON(data[0u]["key"], String, "module");
+ EXPECT_EQ_JSON(data[0u]["label"], String, "Module");
+ EXPECT_EQ_JSON(data[0u]["format"], String, "string");
+
+ ASSERT_TRUE(data[1u].isObject());
+ EXPECT_EQ_JSON(data[1u]["key"], String, "name");
+ EXPECT_EQ_JSON(data[1u]["label"], String, "Name");
+ EXPECT_EQ_JSON(data[1u]["format"], String, "string");
+
+ } else if (nameString == "MediaSample") {
+ EXPECT_EQ(display.size(), 2u);
+ EXPECT_EQ(display[0u].asString(), "marker-chart");
+ EXPECT_EQ(display[1u].asString(), "marker-table");
+
+ ASSERT_EQ(data.size(), 3u);
+
+ ASSERT_TRUE(data[0u].isObject());
+ EXPECT_EQ_JSON(data[0u]["key"], String, "sampleStartTimeUs");
+ EXPECT_EQ_JSON(data[0u]["label"], String, "Sample start time");
+ EXPECT_EQ_JSON(data[0u]["format"], String, "microseconds");
+
+ ASSERT_TRUE(data[1u].isObject());
+ EXPECT_EQ_JSON(data[1u]["key"], String, "sampleEndTimeUs");
+ EXPECT_EQ_JSON(data[1u]["label"], String, "Sample end time");
+ EXPECT_EQ_JSON(data[1u]["format"], String, "microseconds");
+
+ ASSERT_TRUE(data[2u].isObject());
+ EXPECT_EQ_JSON(data[2u]["key"], String, "queueLength");
+ EXPECT_EQ_JSON(data[2u]["label"], String, "Queue length");
+ EXPECT_EQ_JSON(data[2u]["format"], String, "integer");
+
+ } else if (nameString == "VideoFallingBehind") {
+ EXPECT_EQ(display.size(), 2u);
+ EXPECT_EQ(display[0u].asString(), "marker-chart");
+ EXPECT_EQ(display[1u].asString(), "marker-table");
+
+ ASSERT_EQ(data.size(), 2u);
+
+ ASSERT_TRUE(data[0u].isObject());
+ EXPECT_EQ_JSON(data[0u]["key"], String, "videoFrameStartTimeUs");
+ EXPECT_EQ_JSON(data[0u]["label"], String, "Video frame start time");
+ EXPECT_EQ_JSON(data[0u]["format"], String, "microseconds");
+
+ ASSERT_TRUE(data[1u].isObject());
+ EXPECT_EQ_JSON(data[1u]["key"], String, "mediaCurrentTimeUs");
+ EXPECT_EQ_JSON(data[1u]["label"], String, "Media current time");
+ EXPECT_EQ_JSON(data[1u]["format"], String, "microseconds");
+
+ } else if (nameString == "Budget") {
+ EXPECT_EQ(display.size(), 2u);
+ EXPECT_EQ(display[0u].asString(), "marker-chart");
+ EXPECT_EQ(display[1u].asString(), "marker-table");
+
+ ASSERT_EQ(data.size(), 0u);
+
+ } else if (nameString == "markers-gtest") {
+ EXPECT_EQ(display.size(), 7u);
+ EXPECT_EQ(display[0u].asString(), "marker-chart");
+ EXPECT_EQ(display[1u].asString(), "marker-table");
+ EXPECT_EQ(display[2u].asString(), "timeline-overview");
+ EXPECT_EQ(display[3u].asString(), "timeline-memory");
+ EXPECT_EQ(display[4u].asString(), "timeline-ipc");
+ EXPECT_EQ(display[5u].asString(), "timeline-fileio");
+ EXPECT_EQ(display[6u].asString(), "stack-chart");
+
+ EXPECT_EQ_JSON(schema["chartLabel"], String, "chart label");
+ EXPECT_EQ_JSON(schema["tooltipLabel"], String, "tooltip label");
+ EXPECT_EQ_JSON(schema["tableLabel"], String, "table label");
+
+ ASSERT_EQ(data.size(), 14u);
+
+ ASSERT_TRUE(data[0u].isObject());
+ EXPECT_EQ_JSON(data[0u]["key"], String, "key with url");
+ EXPECT_TRUE(data[0u]["label"].isNull());
+ EXPECT_EQ_JSON(data[0u]["format"], String, "url");
+ EXPECT_TRUE(data[0u]["searchable"].isNull());
+
+ ASSERT_TRUE(data[1u].isObject());
+ EXPECT_EQ_JSON(data[1u]["key"], String, "key with label filePath");
+ EXPECT_EQ_JSON(data[1u]["label"], String, "label filePath");
+ EXPECT_EQ_JSON(data[1u]["format"], String, "file-path");
+ EXPECT_TRUE(data[1u]["searchable"].isNull());
+
+ ASSERT_TRUE(data[2u].isObject());
+ EXPECT_EQ_JSON(data[2u]["key"], String,
+ "key with string not-searchable");
+ EXPECT_TRUE(data[2u]["label"].isNull());
+ EXPECT_EQ_JSON(data[2u]["format"], String, "string");
+ EXPECT_EQ_JSON(data[2u]["searchable"], Bool, false);
+
+ ASSERT_TRUE(data[3u].isObject());
+ EXPECT_EQ_JSON(data[3u]["key"], String,
+ "key with label duration searchable");
+ EXPECT_TRUE(data[3u]["label duration"].isNull());
+ EXPECT_EQ_JSON(data[3u]["format"], String, "duration");
+ EXPECT_EQ_JSON(data[3u]["searchable"], Bool, true);
+
+ ASSERT_TRUE(data[4u].isObject());
+ EXPECT_EQ_JSON(data[4u]["key"], String, "key with time");
+ EXPECT_TRUE(data[4u]["label"].isNull());
+ EXPECT_EQ_JSON(data[4u]["format"], String, "time");
+ EXPECT_TRUE(data[4u]["searchable"].isNull());
+
+ ASSERT_TRUE(data[5u].isObject());
+ EXPECT_EQ_JSON(data[5u]["key"], String, "key with seconds");
+ EXPECT_TRUE(data[5u]["label"].isNull());
+ EXPECT_EQ_JSON(data[5u]["format"], String, "seconds");
+ EXPECT_TRUE(data[5u]["searchable"].isNull());
+
+ ASSERT_TRUE(data[6u].isObject());
+ EXPECT_EQ_JSON(data[6u]["key"], String, "key with milliseconds");
+ EXPECT_TRUE(data[6u]["label"].isNull());
+ EXPECT_EQ_JSON(data[6u]["format"], String, "milliseconds");
+ EXPECT_TRUE(data[6u]["searchable"].isNull());
+
+ ASSERT_TRUE(data[7u].isObject());
+ EXPECT_EQ_JSON(data[7u]["key"], String, "key with microseconds");
+ EXPECT_TRUE(data[7u]["label"].isNull());
+ EXPECT_EQ_JSON(data[7u]["format"], String, "microseconds");
+ EXPECT_TRUE(data[7u]["searchable"].isNull());
+
+ ASSERT_TRUE(data[8u].isObject());
+ EXPECT_EQ_JSON(data[8u]["key"], String, "key with nanoseconds");
+ EXPECT_TRUE(data[8u]["label"].isNull());
+ EXPECT_EQ_JSON(data[8u]["format"], String, "nanoseconds");
+ EXPECT_TRUE(data[8u]["searchable"].isNull());
+
+ ASSERT_TRUE(data[9u].isObject());
+ EXPECT_EQ_JSON(data[9u]["key"], String, "key with bytes");
+ EXPECT_TRUE(data[9u]["label"].isNull());
+ EXPECT_EQ_JSON(data[9u]["format"], String, "bytes");
+ EXPECT_TRUE(data[9u]["searchable"].isNull());
+
+ ASSERT_TRUE(data[10u].isObject());
+ EXPECT_EQ_JSON(data[10u]["key"], String, "key with percentage");
+ EXPECT_TRUE(data[10u]["label"].isNull());
+ EXPECT_EQ_JSON(data[10u]["format"], String, "percentage");
+ EXPECT_TRUE(data[10u]["searchable"].isNull());
+
+ ASSERT_TRUE(data[11u].isObject());
+ EXPECT_EQ_JSON(data[11u]["key"], String, "key with integer");
+ EXPECT_TRUE(data[11u]["label"].isNull());
+ EXPECT_EQ_JSON(data[11u]["format"], String, "integer");
+ EXPECT_TRUE(data[11u]["searchable"].isNull());
+
+ ASSERT_TRUE(data[12u].isObject());
+ EXPECT_EQ_JSON(data[12u]["key"], String, "key with decimal");
+ EXPECT_TRUE(data[12u]["label"].isNull());
+ EXPECT_EQ_JSON(data[12u]["format"], String, "decimal");
+ EXPECT_TRUE(data[12u]["searchable"].isNull());
+
+ ASSERT_TRUE(data[13u].isObject());
+ EXPECT_EQ_JSON(data[13u]["label"], String, "static label");
+ EXPECT_EQ_JSON(data[13u]["value"], String, "static value");
+
+ } else if (nameString == "markers-gtest-special") {
+ EXPECT_EQ(display.size(), 0u);
+ ASSERT_EQ(data.size(), 0u);
+
+ } else if (nameString == "markers-gtest-unused") {
+ ADD_FAILURE() << "Schema for GtestUnusedMarker should not be here";
+
+ } else {
+ printf("FYI: Unknown marker schema '%s'\n", nameString.c_str());
+ }
+ }
+
+ // Check that we've got all expected schema.
+ EXPECT_TRUE(testedSchemaNames.find("Text") != testedSchemaNames.end());
+ EXPECT_TRUE(testedSchemaNames.find("tracing") !=
+ testedSchemaNames.end());
+ EXPECT_TRUE(testedSchemaNames.find("MediaSample") !=
+ testedSchemaNames.end());
+ } // markerSchema
+ } // meta
+ });
+
+ Maybe<ProfilerBufferInfo> info = profiler_get_buffer_info();
+ EXPECT_TRUE(info.isSome());
+ printf("Profiler buffer range: %llu .. %llu (%llu bytes)\n",
+ static_cast<unsigned long long>(info->mRangeStart),
+ static_cast<unsigned long long>(info->mRangeEnd),
+ // sizeof(ProfileBufferEntry) == 9
+ (static_cast<unsigned long long>(info->mRangeEnd) -
+ static_cast<unsigned long long>(info->mRangeStart)) *
+ 9);
+ printf("Stats: min(us) .. mean(us) .. max(us) [count]\n");
+ printf("- Intervals: %7.1f .. %7.1f .. %7.1f [%u]\n",
+ info->mIntervalsUs.min, info->mIntervalsUs.sum / info->mIntervalsUs.n,
+ info->mIntervalsUs.max, info->mIntervalsUs.n);
+ printf("- Overheads: %7.1f .. %7.1f .. %7.1f [%u]\n",
+ info->mOverheadsUs.min, info->mOverheadsUs.sum / info->mOverheadsUs.n,
+ info->mOverheadsUs.max, info->mOverheadsUs.n);
+ printf(" - Locking: %7.1f .. %7.1f .. %7.1f [%u]\n",
+ info->mLockingsUs.min, info->mLockingsUs.sum / info->mLockingsUs.n,
+ info->mLockingsUs.max, info->mLockingsUs.n);
+ printf(" - Clearning: %7.1f .. %7.1f .. %7.1f [%u]\n",
+ info->mCleaningsUs.min, info->mCleaningsUs.sum / info->mCleaningsUs.n,
+ info->mCleaningsUs.max, info->mCleaningsUs.n);
+ printf(" - Counters: %7.1f .. %7.1f .. %7.1f [%u]\n",
+ info->mCountersUs.min, info->mCountersUs.sum / info->mCountersUs.n,
+ info->mCountersUs.max, info->mCountersUs.n);
+ printf(" - Threads: %7.1f .. %7.1f .. %7.1f [%u]\n",
+ info->mThreadsUs.min, info->mThreadsUs.sum / info->mThreadsUs.n,
+ info->mThreadsUs.max, info->mThreadsUs.n);
+
+ profiler_stop();
+
+ // Try to add markers while the profiler is stopped.
+ PROFILER_MARKER_UNTYPED("marker after profiler_stop", OTHER);
+
+ // Warning: this could be racy
+ profiler_start(PROFILER_DEFAULT_ENTRIES, PROFILER_DEFAULT_INTERVAL, features,
+ filters, MOZ_ARRAY_LENGTH(filters), 0);
+
+ // This last marker shouldn't get streamed.
+ SpliceableChunkedJSONWriter w2{FailureLatchInfallibleSource::Singleton()};
+ w2.Start();
+ EXPECT_TRUE(::profiler_stream_json_for_this_process(w2).isOk());
+ w2.End();
+ EXPECT_FALSE(w2.Failed());
+ UniquePtr<char[]> profile2 = w2.ChunkedWriteFunc().CopyData();
+ ASSERT_TRUE(!!profile2.get());
+ EXPECT_TRUE(
+ std::string_view(profile2.get()).find("marker after profiler_stop") ==
+ std::string_view::npos);
+
+ profiler_stop();
+}
+
+# define COUNTER_NAME "TestCounter"
+# define COUNTER_DESCRIPTION "Test of counters in profiles"
+# define COUNTER_NAME2 "Counter2"
+# define COUNTER_DESCRIPTION2 "Second Test of counters in profiles"
+
+PROFILER_DEFINE_COUNT_TOTAL(TestCounter, COUNTER_NAME, COUNTER_DESCRIPTION);
+PROFILER_DEFINE_COUNT_TOTAL(TestCounter2, COUNTER_NAME2, COUNTER_DESCRIPTION2);
+
+TEST(GeckoProfiler, Counters)
+{
+ uint32_t features = 0;
+ const char* filters[] = {"GeckoMain"};
+
+ // We will record some counter values, and check that they're present (and no
+ // other) when expected.
+
+ struct NumberAndCount {
+ uint64_t mNumber;
+ int64_t mCount;
+ };
+
+ int64_t testCounters[] = {10, 7, -17};
+ NumberAndCount expectedTestCounters[] = {{1u, 10}, {0u, 0}, {1u, 7},
+ {0u, 0}, {0u, 0}, {1u, -17},
+ {0u, 0}, {0u, 0}};
+ constexpr size_t expectedTestCountersCount =
+ MOZ_ARRAY_LENGTH(expectedTestCounters);
+
+ bool expectCounter2 = false;
+ int64_t testCounters2[] = {10};
+ NumberAndCount expectedTestCounters2[] = {{1u, 10}, {0u, 0}};
+ constexpr size_t expectedTestCounters2Count =
+ MOZ_ARRAY_LENGTH(expectedTestCounters2);
+
+ auto checkCountersInJSON = [&](const Json::Value& aRoot) {
+ size_t nextExpectedTestCounter = 0u;
+ size_t nextExpectedTestCounter2 = 0u;
+
+ GET_JSON(counters, aRoot["counters"], Array);
+ for (const Json::Value& counter : counters) {
+ ASSERT_TRUE(counter.isObject());
+ GET_JSON_VALUE(name, counter["name"], String);
+ if (name == "TestCounter") {
+ EXPECT_EQ_JSON(counter["category"], String, COUNTER_NAME);
+ EXPECT_EQ_JSON(counter["description"], String, COUNTER_DESCRIPTION);
+ GET_JSON(sampleGroups, counter["sample_groups"], Array);
+ for (const Json::Value& sampleGroup : sampleGroups) {
+ ASSERT_TRUE(sampleGroup.isObject());
+ EXPECT_EQ_JSON(sampleGroup["id"], UInt, 0u);
+
+ GET_JSON(samples, sampleGroup["samples"], Object);
+ GET_JSON(samplesSchema, samples["schema"], Object);
+ EXPECT_GE(samplesSchema.size(), 3u);
+ GET_JSON_VALUE(samplesNumber, samplesSchema["number"], UInt);
+ GET_JSON_VALUE(samplesCount, samplesSchema["count"], UInt);
+ GET_JSON(samplesData, samples["data"], Array);
+ for (const Json::Value& sample : samplesData) {
+ ASSERT_TRUE(sample.isArray());
+ ASSERT_LT(nextExpectedTestCounter, expectedTestCountersCount);
+ EXPECT_EQ_JSON(
+ sample[samplesNumber], UInt64,
+ expectedTestCounters[nextExpectedTestCounter].mNumber);
+ EXPECT_EQ_JSON(
+ sample[samplesCount], Int64,
+ expectedTestCounters[nextExpectedTestCounter].mCount);
+ ++nextExpectedTestCounter;
+ }
+ }
+ } else if (name == "TestCounter2") {
+ EXPECT_TRUE(expectCounter2);
+
+ EXPECT_EQ_JSON(counter["category"], String, COUNTER_NAME2);
+ EXPECT_EQ_JSON(counter["description"], String, COUNTER_DESCRIPTION2);
+ GET_JSON(sampleGroups, counter["sample_groups"], Array);
+ for (const Json::Value& sampleGroup : sampleGroups) {
+ ASSERT_TRUE(sampleGroup.isObject());
+ EXPECT_EQ_JSON(sampleGroup["id"], UInt, 0u);
+
+ GET_JSON(samples, sampleGroup["samples"], Object);
+ GET_JSON(samplesSchema, samples["schema"], Object);
+ EXPECT_GE(samplesSchema.size(), 3u);
+ GET_JSON_VALUE(samplesNumber, samplesSchema["number"], UInt);
+ GET_JSON_VALUE(samplesCount, samplesSchema["count"], UInt);
+ GET_JSON(samplesData, samples["data"], Array);
+ for (const Json::Value& sample : samplesData) {
+ ASSERT_TRUE(sample.isArray());
+ ASSERT_LT(nextExpectedTestCounter2, expectedTestCounters2Count);
+ EXPECT_EQ_JSON(
+ sample[samplesNumber], UInt64,
+ expectedTestCounters2[nextExpectedTestCounter2].mNumber);
+ EXPECT_EQ_JSON(
+ sample[samplesCount], Int64,
+ expectedTestCounters2[nextExpectedTestCounter2].mCount);
+ ++nextExpectedTestCounter2;
+ }
+ }
+ }
+ }
+
+ EXPECT_EQ(nextExpectedTestCounter, expectedTestCountersCount);
+ if (expectCounter2) {
+ EXPECT_EQ(nextExpectedTestCounter2, expectedTestCounters2Count);
+ }
+ };
+
+ // Inactive -> Active
+ profiler_ensure_started(PROFILER_DEFAULT_ENTRIES, PROFILER_DEFAULT_INTERVAL,
+ features, filters, MOZ_ARRAY_LENGTH(filters), 0);
+
+ // Output all "TestCounter"s, with increasing delays (to test different
+ // number of counter samplings).
+ int samplingWaits = 2;
+ for (int64_t counter : testCounters) {
+ AUTO_PROFILER_COUNT_TOTAL(TestCounter, counter);
+ for (int i = 0; i < samplingWaits; ++i) {
+ ASSERT_EQ(WaitForSamplingState(), SamplingState::SamplingCompleted);
+ }
+ ++samplingWaits;
+ }
+
+ // Verify we got "TestCounter" in the output, but not "TestCounter2" yet.
+ UniquePtr<char[]> profile = profiler_get_profile();
+ JSONOutputCheck(profile.get(), checkCountersInJSON);
+
+ // Now introduce TestCounter2.
+ expectCounter2 = true;
+ for (int64_t counter2 : testCounters2) {
+ AUTO_PROFILER_COUNT_TOTAL(TestCounter2, counter2);
+ ASSERT_EQ(WaitForSamplingState(), SamplingState::SamplingCompleted);
+ ASSERT_EQ(WaitForSamplingState(), SamplingState::SamplingCompleted);
+ }
+
+ // Verify we got both "TestCounter" and "TestCounter2" in the output.
+ profile = profiler_get_profile();
+ JSONOutputCheck(profile.get(), checkCountersInJSON);
+
+ profiler_stop();
+}
+
+TEST(GeckoProfiler, Time)
+{
+ uint32_t features = ProfilerFeature::StackWalk;
+ const char* filters[] = {"GeckoMain"};
+
+ double t1 = profiler_time();
+ double t2 = profiler_time();
+ ASSERT_TRUE(t1 <= t2);
+
+ // profiler_start() restarts the timer used by profiler_time().
+ profiler_start(PROFILER_DEFAULT_ENTRIES, PROFILER_DEFAULT_INTERVAL, features,
+ filters, MOZ_ARRAY_LENGTH(filters), 0);
+
+ double t3 = profiler_time();
+ double t4 = profiler_time();
+ ASSERT_TRUE(t3 <= t4);
+
+ profiler_stop();
+
+ double t5 = profiler_time();
+ double t6 = profiler_time();
+ ASSERT_TRUE(t4 <= t5 && t1 <= t6);
+}
+
+TEST(GeckoProfiler, GetProfile)
+{
+ uint32_t features = ProfilerFeature::StackWalk;
+ const char* filters[] = {"GeckoMain"};
+
+ ASSERT_TRUE(!profiler_get_profile());
+
+ profiler_start(PROFILER_DEFAULT_ENTRIES, PROFILER_DEFAULT_INTERVAL, features,
+ filters, MOZ_ARRAY_LENGTH(filters), 0);
+
+ mozilla::Maybe<uint32_t> activeFeatures = profiler_features_if_active();
+ ASSERT_TRUE(activeFeatures.isSome());
+ // Not all platforms support stack-walking.
+ const bool hasStackWalk = ProfilerFeature::HasStackWalk(*activeFeatures);
+
+ UniquePtr<char[]> profile = profiler_get_profile();
+ JSONOutputCheck(profile.get(), [&](const Json::Value& aRoot) {
+ GET_JSON(meta, aRoot["meta"], Object);
+ {
+ GET_JSON(configuration, meta["configuration"], Object);
+ {
+ GET_JSON(features, configuration["features"], Array);
+ {
+ EXPECT_EQ(features.size(), (hasStackWalk ? 1u : 0u));
+ if (hasStackWalk) {
+ EXPECT_JSON_ARRAY_CONTAINS(features, String, "stackwalk");
+ }
+ }
+ GET_JSON(threads, configuration["threads"], Array);
+ {
+ EXPECT_EQ(threads.size(), 1u);
+ EXPECT_JSON_ARRAY_CONTAINS(threads, String, "GeckoMain");
+ }
+ }
+ }
+ });
+
+ profiler_stop();
+
+ ASSERT_TRUE(!profiler_get_profile());
+}
+
+TEST(GeckoProfiler, StreamJSONForThisProcess)
+{
+ uint32_t features = ProfilerFeature::StackWalk;
+ const char* filters[] = {"GeckoMain"};
+
+ SpliceableChunkedJSONWriter w{FailureLatchInfallibleSource::Singleton()};
+ MOZ_RELEASE_ASSERT(!w.ChunkedWriteFunc().Fallible());
+ MOZ_RELEASE_ASSERT(!w.ChunkedWriteFunc().Failed());
+ MOZ_RELEASE_ASSERT(!w.ChunkedWriteFunc().GetFailure());
+ MOZ_RELEASE_ASSERT(&w.ChunkedWriteFunc().SourceFailureLatch() ==
+ &mozilla::FailureLatchInfallibleSource::Singleton());
+ MOZ_RELEASE_ASSERT(
+ &std::as_const(w.ChunkedWriteFunc()).SourceFailureLatch() ==
+ &mozilla::FailureLatchInfallibleSource::Singleton());
+ MOZ_RELEASE_ASSERT(!w.Fallible());
+ MOZ_RELEASE_ASSERT(!w.Failed());
+ MOZ_RELEASE_ASSERT(!w.GetFailure());
+ MOZ_RELEASE_ASSERT(&w.SourceFailureLatch() ==
+ &mozilla::FailureLatchInfallibleSource::Singleton());
+ MOZ_RELEASE_ASSERT(&std::as_const(w).SourceFailureLatch() ==
+ &mozilla::FailureLatchInfallibleSource::Singleton());
+
+ ASSERT_TRUE(::profiler_stream_json_for_this_process(w).isErr());
+ MOZ_RELEASE_ASSERT(!w.ChunkedWriteFunc().Failed());
+ MOZ_RELEASE_ASSERT(!w.ChunkedWriteFunc().GetFailure());
+ MOZ_RELEASE_ASSERT(!w.Failed());
+ MOZ_RELEASE_ASSERT(!w.GetFailure());
+
+ profiler_start(PROFILER_DEFAULT_ENTRIES, PROFILER_DEFAULT_INTERVAL, features,
+ filters, MOZ_ARRAY_LENGTH(filters), 0);
+
+ w.Start();
+ ASSERT_TRUE(::profiler_stream_json_for_this_process(w).isOk());
+ w.End();
+
+ MOZ_RELEASE_ASSERT(!w.ChunkedWriteFunc().Failed());
+ MOZ_RELEASE_ASSERT(!w.ChunkedWriteFunc().GetFailure());
+ MOZ_RELEASE_ASSERT(!w.Failed());
+ MOZ_RELEASE_ASSERT(!w.GetFailure());
+
+ UniquePtr<char[]> profile = w.ChunkedWriteFunc().CopyData();
+
+ JSONOutputCheck(profile.get(), [](const Json::Value&) {});
+
+ profiler_stop();
+
+ ASSERT_TRUE(::profiler_stream_json_for_this_process(w).isErr());
+}
+
+// Internal version of profiler_stream_json_for_this_process, which allows being
+// called from a non-main thread of the parent process, at the risk of getting
+// an incomplete profile.
+ProfilerResult<ProfileGenerationAdditionalInformation>
+do_profiler_stream_json_for_this_process(
+ SpliceableJSONWriter& aWriter, double aSinceTime, bool aIsShuttingDown,
+ ProfilerCodeAddressService* aService,
+ mozilla::ProgressLogger aProgressLogger);
+
+TEST(GeckoProfiler, StreamJSONForThisProcessThreaded)
+{
+ // Same as the previous test, but calling some things on background threads.
+ nsCOMPtr<nsIThread> thread;
+ nsresult rv = NS_NewNamedThread("GeckoProfGTest", getter_AddRefs(thread));
+ ASSERT_NS_SUCCEEDED(rv);
+
+ uint32_t features = ProfilerFeature::StackWalk;
+ const char* filters[] = {"GeckoMain"};
+
+ SpliceableChunkedJSONWriter w{FailureLatchInfallibleSource::Singleton()};
+ MOZ_RELEASE_ASSERT(!w.ChunkedWriteFunc().Fallible());
+ MOZ_RELEASE_ASSERT(!w.ChunkedWriteFunc().Failed());
+ MOZ_RELEASE_ASSERT(!w.ChunkedWriteFunc().GetFailure());
+ MOZ_RELEASE_ASSERT(&w.ChunkedWriteFunc().SourceFailureLatch() ==
+ &mozilla::FailureLatchInfallibleSource::Singleton());
+ MOZ_RELEASE_ASSERT(
+ &std::as_const(w.ChunkedWriteFunc()).SourceFailureLatch() ==
+ &mozilla::FailureLatchInfallibleSource::Singleton());
+ MOZ_RELEASE_ASSERT(!w.Fallible());
+ MOZ_RELEASE_ASSERT(!w.Failed());
+ MOZ_RELEASE_ASSERT(!w.GetFailure());
+ MOZ_RELEASE_ASSERT(&w.SourceFailureLatch() ==
+ &mozilla::FailureLatchInfallibleSource::Singleton());
+ MOZ_RELEASE_ASSERT(&std::as_const(w).SourceFailureLatch() ==
+ &mozilla::FailureLatchInfallibleSource::Singleton());
+
+ ASSERT_TRUE(::profiler_stream_json_for_this_process(w).isErr());
+ MOZ_RELEASE_ASSERT(!w.ChunkedWriteFunc().Failed());
+ MOZ_RELEASE_ASSERT(!w.ChunkedWriteFunc().GetFailure());
+ MOZ_RELEASE_ASSERT(!w.Failed());
+ MOZ_RELEASE_ASSERT(!w.GetFailure());
+
+ // Start the profiler on the main thread.
+ profiler_start(PROFILER_DEFAULT_ENTRIES, PROFILER_DEFAULT_INTERVAL, features,
+ filters, MOZ_ARRAY_LENGTH(filters), 0);
+
+ // Call profiler_stream_json_for_this_process on a background thread.
+ NS_DispatchAndSpinEventLoopUntilComplete(
+ "GeckoProfiler_StreamJSONForThisProcessThreaded_Test::TestBody"_ns,
+ thread,
+ NS_NewRunnableFunction(
+ "GeckoProfiler_StreamJSONForThisProcessThreaded_Test::TestBody",
+ [&]() {
+ w.Start();
+ ASSERT_TRUE(::do_profiler_stream_json_for_this_process(
+ w, /* double aSinceTime */ 0.0,
+ /* bool aIsShuttingDown */ false,
+ /* ProfilerCodeAddressService* aService */ nullptr,
+ mozilla::ProgressLogger{})
+ .isOk());
+ w.End();
+ }));
+
+ MOZ_RELEASE_ASSERT(!w.ChunkedWriteFunc().Failed());
+ MOZ_RELEASE_ASSERT(!w.ChunkedWriteFunc().GetFailure());
+ MOZ_RELEASE_ASSERT(!w.Failed());
+ MOZ_RELEASE_ASSERT(!w.GetFailure());
+
+ UniquePtr<char[]> profile = w.ChunkedWriteFunc().CopyData();
+
+ JSONOutputCheck(profile.get(), [](const Json::Value&) {});
+
+ // Stop the profiler and call profiler_stream_json_for_this_process on a
+ // background thread.
+ NS_DispatchAndSpinEventLoopUntilComplete(
+ "GeckoProfiler_StreamJSONForThisProcessThreaded_Test::TestBody"_ns,
+ thread,
+ NS_NewRunnableFunction(
+ "GeckoProfiler_StreamJSONForThisProcessThreaded_Test::TestBody",
+ [&]() {
+ profiler_stop();
+ ASSERT_TRUE(::do_profiler_stream_json_for_this_process(
+ w, /* double aSinceTime */ 0.0,
+ /* bool aIsShuttingDown */ false,
+ /* ProfilerCodeAddressService* aService */ nullptr,
+ mozilla::ProgressLogger{})
+ .isErr());
+ }));
+ thread->Shutdown();
+
+ // Call profiler_stream_json_for_this_process on the main thread.
+ ASSERT_TRUE(::profiler_stream_json_for_this_process(w).isErr());
+}
+
+TEST(GeckoProfiler, ProfilingStack)
+{
+ uint32_t features = ProfilerFeature::StackWalk;
+ const char* filters[] = {"GeckoMain"};
+
+ AUTO_PROFILER_LABEL("A::B", OTHER);
+
+ UniqueFreePtr<char> dynamic(strdup("dynamic"));
+ {
+ AUTO_PROFILER_LABEL_DYNAMIC_CSTR("A::C", JS, dynamic.get());
+ AUTO_PROFILER_LABEL_DYNAMIC_NSCSTRING("A::C2", JS,
+ nsDependentCString(dynamic.get()));
+ AUTO_PROFILER_LABEL_DYNAMIC_LOSSY_NSSTRING(
+ "A::C3", JS, NS_ConvertUTF8toUTF16(dynamic.get()));
+
+ profiler_start(PROFILER_DEFAULT_ENTRIES, PROFILER_DEFAULT_INTERVAL,
+ features, filters, MOZ_ARRAY_LENGTH(filters), 0);
+
+ ASSERT_TRUE(profiler_get_backtrace());
+ }
+
+ AutoProfilerLabel label1("A", nullptr, JS::ProfilingCategoryPair::DOM);
+ AutoProfilerLabel label2("A", dynamic.get(),
+ JS::ProfilingCategoryPair::NETWORK);
+ ASSERT_TRUE(profiler_get_backtrace());
+
+ profiler_stop();
+
+ ASSERT_TRUE(!profiler_get_profile());
+}
+
+TEST(GeckoProfiler, Bug1355807)
+{
+ uint32_t features = ProfilerFeature::JS;
+ const char* manyThreadsFilter[] = {""};
+ const char* fewThreadsFilter[] = {"GeckoMain"};
+
+ profiler_start(PROFILER_DEFAULT_ENTRIES, PROFILER_DEFAULT_INTERVAL, features,
+ manyThreadsFilter, MOZ_ARRAY_LENGTH(manyThreadsFilter), 0);
+
+ profiler_start(PROFILER_DEFAULT_ENTRIES, PROFILER_DEFAULT_INTERVAL, features,
+ fewThreadsFilter, MOZ_ARRAY_LENGTH(fewThreadsFilter), 0);
+
+ // In bug 1355807 this caused an assertion failure in StopJSSampling().
+ profiler_start(PROFILER_DEFAULT_ENTRIES, PROFILER_DEFAULT_INTERVAL, features,
+ fewThreadsFilter, MOZ_ARRAY_LENGTH(fewThreadsFilter), 0);
+
+ profiler_stop();
+}
+
+class GTestStackCollector final : public ProfilerStackCollector {
+ public:
+ GTestStackCollector() : mSetIsMainThread(0), mFrames(0) {}
+
+ virtual void SetIsMainThread() { mSetIsMainThread++; }
+
+ virtual void CollectNativeLeafAddr(void* aAddr) { mFrames++; }
+ virtual void CollectJitReturnAddr(void* aAddr) { mFrames++; }
+ virtual void CollectWasmFrame(const char* aLabel) { mFrames++; }
+ virtual void CollectProfilingStackFrame(
+ const js::ProfilingStackFrame& aFrame) {
+ mFrames++;
+ }
+
+ int mSetIsMainThread;
+ int mFrames;
+};
+
+void DoSuspendAndSample(ProfilerThreadId aTidToSample,
+ nsIThread* aSamplingThread) {
+ NS_DispatchAndSpinEventLoopUntilComplete(
+ "GeckoProfiler_SuspendAndSample_Test::TestBody"_ns, aSamplingThread,
+ NS_NewRunnableFunction(
+ "GeckoProfiler_SuspendAndSample_Test::TestBody", [&]() {
+ uint32_t features = ProfilerFeature::CPUUtilization;
+ GTestStackCollector collector;
+ profiler_suspend_and_sample_thread(aTidToSample, features,
+ collector,
+ /* sampleNative = */ true);
+
+ ASSERT_TRUE(collector.mSetIsMainThread ==
+ (aTidToSample == profiler_main_thread_id()));
+ ASSERT_TRUE(collector.mFrames > 0);
+ }));
+}
+
+TEST(GeckoProfiler, SuspendAndSample)
+{
+ nsCOMPtr<nsIThread> thread;
+ nsresult rv = NS_NewNamedThread("GeckoProfGTest", getter_AddRefs(thread));
+ ASSERT_NS_SUCCEEDED(rv);
+
+ ProfilerThreadId tid = profiler_current_thread_id();
+
+ ASSERT_TRUE(!profiler_is_active());
+
+ // Suspend and sample while the profiler is inactive.
+ DoSuspendAndSample(tid, thread);
+
+ DoSuspendAndSample(ProfilerThreadId{}, thread);
+
+ uint32_t features = ProfilerFeature::JS;
+ const char* filters[] = {"GeckoMain", "Compositor"};
+
+ profiler_start(PROFILER_DEFAULT_ENTRIES, PROFILER_DEFAULT_INTERVAL, features,
+ filters, MOZ_ARRAY_LENGTH(filters), 0);
+
+ ASSERT_TRUE(profiler_is_active());
+
+ // Suspend and sample while the profiler is active.
+ DoSuspendAndSample(tid, thread);
+
+ DoSuspendAndSample(ProfilerThreadId{}, thread);
+
+ profiler_stop();
+
+ ASSERT_TRUE(!profiler_is_active());
+}
+
+TEST(GeckoProfiler, PostSamplingCallback)
+{
+ const char* filters[] = {"GeckoMain"};
+
+ ASSERT_TRUE(!profiler_is_active());
+ ASSERT_TRUE(!profiler_callback_after_sampling(
+ [&](SamplingState) { ASSERT_TRUE(false); }));
+
+ profiler_start(PROFILER_DEFAULT_ENTRIES, PROFILER_DEFAULT_INTERVAL,
+ ProfilerFeature::StackWalk, filters, MOZ_ARRAY_LENGTH(filters),
+ 0);
+ {
+ // Stack sampling -> This label should appear at least once.
+ AUTO_PROFILER_LABEL("PostSamplingCallback completed", OTHER);
+ ASSERT_EQ(WaitForSamplingState(), SamplingState::SamplingCompleted);
+ }
+ UniquePtr<char[]> profileCompleted = profiler_get_profile();
+ JSONOutputCheck(profileCompleted.get(), [](const Json::Value& aRoot) {
+ GET_JSON(threads, aRoot["threads"], Array);
+ {
+ GET_JSON(thread0, threads[0], Object);
+ {
+ EXPECT_JSON_ARRAY_CONTAINS(thread0["stringTable"], String,
+ "PostSamplingCallback completed");
+ }
+ }
+ });
+
+ profiler_pause();
+ {
+ // Paused -> This label should not appear.
+ AUTO_PROFILER_LABEL("PostSamplingCallback paused", OTHER);
+ ASSERT_EQ(WaitForSamplingState(), SamplingState::SamplingPaused);
+ }
+ UniquePtr<char[]> profilePaused = profiler_get_profile();
+ JSONOutputCheck(profilePaused.get(), [](const Json::Value& aRoot) {});
+ // This string shouldn't appear *anywhere* in the profile.
+ ASSERT_FALSE(strstr(profilePaused.get(), "PostSamplingCallback paused"));
+
+ profiler_resume();
+ {
+ // Stack sampling -> This label should appear at least once.
+ AUTO_PROFILER_LABEL("PostSamplingCallback resumed", OTHER);
+ ASSERT_EQ(WaitForSamplingState(), SamplingState::SamplingCompleted);
+ }
+ UniquePtr<char[]> profileResumed = profiler_get_profile();
+ JSONOutputCheck(profileResumed.get(), [](const Json::Value& aRoot) {
+ GET_JSON(threads, aRoot["threads"], Array);
+ {
+ GET_JSON(thread0, threads[0], Object);
+ {
+ EXPECT_JSON_ARRAY_CONTAINS(thread0["stringTable"], String,
+ "PostSamplingCallback resumed");
+ }
+ }
+ });
+
+ profiler_start(PROFILER_DEFAULT_ENTRIES, PROFILER_DEFAULT_INTERVAL,
+ ProfilerFeature::StackWalk | ProfilerFeature::NoStackSampling,
+ filters, MOZ_ARRAY_LENGTH(filters), 0);
+ {
+ // No stack sampling -> This label should not appear.
+ AUTO_PROFILER_LABEL("PostSamplingCallback completed (no stacks)", OTHER);
+ ASSERT_EQ(WaitForSamplingState(), SamplingState::NoStackSamplingCompleted);
+ }
+ UniquePtr<char[]> profileNoStacks = profiler_get_profile();
+ JSONOutputCheck(profileNoStacks.get(), [](const Json::Value& aRoot) {});
+ // This string shouldn't appear *anywhere* in the profile.
+ ASSERT_FALSE(strstr(profileNoStacks.get(),
+ "PostSamplingCallback completed (no stacks)"));
+
+ // Note: There is no non-racy way to test for SamplingState::JustStopped, as
+ // it would require coordination between `profiler_stop()` and another thread
+ // doing `profiler_callback_after_sampling()` at just the right moment.
+
+ profiler_stop();
+ ASSERT_TRUE(!profiler_is_active());
+ ASSERT_TRUE(!profiler_callback_after_sampling(
+ [&](SamplingState) { ASSERT_TRUE(false); }));
+}
+
+TEST(GeckoProfiler, ProfilingStateCallback)
+{
+ const char* filters[] = {"GeckoMain"};
+
+ ASSERT_TRUE(!profiler_is_active());
+
+ struct ProfilingStateAndId {
+ ProfilingState mProfilingState;
+ int mId;
+ };
+ DataMutex<Vector<ProfilingStateAndId>> states{"Profiling states"};
+ auto CreateCallback = [&states](int id) {
+ return [id, &states](ProfilingState aProfilingState) {
+ auto lockedStates = states.Lock();
+ ASSERT_TRUE(
+ lockedStates->append(ProfilingStateAndId{aProfilingState, id}));
+ };
+ };
+ auto CheckStatesIsEmpty = [&states]() {
+ auto lockedStates = states.Lock();
+ EXPECT_TRUE(lockedStates->empty());
+ };
+ auto CheckStatesOnlyContains = [&states](ProfilingState aProfilingState,
+ int aId) {
+ auto lockedStates = states.Lock();
+ EXPECT_EQ(lockedStates->length(), 1u);
+ if (lockedStates->length() >= 1u) {
+ EXPECT_EQ((*lockedStates)[0].mProfilingState, aProfilingState);
+ EXPECT_EQ((*lockedStates)[0].mId, aId);
+ }
+ lockedStates->clear();
+ };
+
+ profiler_add_state_change_callback(AllProfilingStates(), CreateCallback(1),
+ 1);
+ // This is in case of error, and it also exercises the (allowed) removal of
+ // unknown callback ids.
+ auto cleanup1 = mozilla::MakeScopeExit(
+ []() { profiler_remove_state_change_callback(1); });
+ CheckStatesIsEmpty();
+
+ profiler_start(PROFILER_DEFAULT_ENTRIES, PROFILER_DEFAULT_INTERVAL,
+ ProfilerFeature::StackWalk, filters, MOZ_ARRAY_LENGTH(filters),
+ 0);
+
+ CheckStatesOnlyContains(ProfilingState::Started, 1);
+
+ profiler_add_state_change_callback(AllProfilingStates(), CreateCallback(2),
+ 2);
+ // This is in case of error, and it also exercises the (allowed) removal of
+ // unknown callback ids.
+ auto cleanup2 = mozilla::MakeScopeExit(
+ []() { profiler_remove_state_change_callback(2); });
+ CheckStatesOnlyContains(ProfilingState::AlreadyActive, 2);
+
+ profiler_remove_state_change_callback(2);
+ CheckStatesOnlyContains(ProfilingState::RemovingCallback, 2);
+ // Note: The actual removal is effectively tested below, by not seeing any
+ // more invocations of the 2nd callback.
+
+ ASSERT_EQ(WaitForSamplingState(), SamplingState::SamplingCompleted);
+ UniquePtr<char[]> profileCompleted = profiler_get_profile();
+ CheckStatesOnlyContains(ProfilingState::GeneratingProfile, 1);
+ JSONOutputCheck(profileCompleted.get(), [](const Json::Value& aRoot) {});
+
+ profiler_pause();
+ CheckStatesOnlyContains(ProfilingState::Pausing, 1);
+ UniquePtr<char[]> profilePaused = profiler_get_profile();
+ CheckStatesOnlyContains(ProfilingState::GeneratingProfile, 1);
+ JSONOutputCheck(profilePaused.get(), [](const Json::Value& aRoot) {});
+
+ profiler_resume();
+ CheckStatesOnlyContains(ProfilingState::Resumed, 1);
+ ASSERT_EQ(WaitForSamplingState(), SamplingState::SamplingCompleted);
+ UniquePtr<char[]> profileResumed = profiler_get_profile();
+ CheckStatesOnlyContains(ProfilingState::GeneratingProfile, 1);
+ JSONOutputCheck(profileResumed.get(), [](const Json::Value& aRoot) {});
+
+ // This effectively stops the profiler before restarting it, but
+ // ProfilingState::Stopping is not notified. See `profiler_start` for details.
+ profiler_start(PROFILER_DEFAULT_ENTRIES, PROFILER_DEFAULT_INTERVAL,
+ ProfilerFeature::StackWalk | ProfilerFeature::NoStackSampling,
+ filters, MOZ_ARRAY_LENGTH(filters), 0);
+ CheckStatesOnlyContains(ProfilingState::Started, 1);
+ ASSERT_EQ(WaitForSamplingState(), SamplingState::NoStackSamplingCompleted);
+ UniquePtr<char[]> profileNoStacks = profiler_get_profile();
+ CheckStatesOnlyContains(ProfilingState::GeneratingProfile, 1);
+ JSONOutputCheck(profileNoStacks.get(), [](const Json::Value& aRoot) {});
+
+ profiler_stop();
+ CheckStatesOnlyContains(ProfilingState::Stopping, 1);
+ ASSERT_TRUE(!profiler_is_active());
+
+ profiler_remove_state_change_callback(1);
+ CheckStatesOnlyContains(ProfilingState::RemovingCallback, 1);
+
+ // Note: ProfilingState::ShuttingDown cannot be tested here, and the profiler
+ // can only be shut down once per process.
+}
+
+TEST(GeckoProfiler, BaseProfilerHandOff)
+{
+ const char* filters[] = {"GeckoMain"};
+
+ ASSERT_TRUE(!baseprofiler::profiler_is_active());
+ ASSERT_TRUE(!profiler_is_active());
+
+ BASE_PROFILER_MARKER_UNTYPED("Base marker before base profiler", OTHER, {});
+ PROFILER_MARKER_UNTYPED("Gecko marker before base profiler", OTHER, {});
+
+ // Start the Base Profiler.
+ baseprofiler::profiler_start(
+ PROFILER_DEFAULT_ENTRIES, PROFILER_DEFAULT_INTERVAL,
+ ProfilerFeature::StackWalk, filters, MOZ_ARRAY_LENGTH(filters));
+
+ ASSERT_TRUE(baseprofiler::profiler_is_active());
+ ASSERT_TRUE(!profiler_is_active());
+
+ // Add at least a marker, which should go straight into the buffer.
+ Maybe<baseprofiler::ProfilerBufferInfo> info0 =
+ baseprofiler::profiler_get_buffer_info();
+ BASE_PROFILER_MARKER_UNTYPED("Base marker during base profiler", OTHER, {});
+ Maybe<baseprofiler::ProfilerBufferInfo> info1 =
+ baseprofiler::profiler_get_buffer_info();
+ ASSERT_GT(info1->mRangeEnd, info0->mRangeEnd);
+
+ PROFILER_MARKER_UNTYPED("Gecko marker during base profiler", OTHER, {});
+
+ // Start the Gecko Profiler, which should grab the Base Profiler profile and
+ // stop it.
+ profiler_start(PROFILER_DEFAULT_ENTRIES, PROFILER_DEFAULT_INTERVAL,
+ ProfilerFeature::StackWalk, filters, MOZ_ARRAY_LENGTH(filters),
+ 0);
+
+ ASSERT_TRUE(!baseprofiler::profiler_is_active());
+ ASSERT_TRUE(profiler_is_active());
+
+ BASE_PROFILER_MARKER_UNTYPED("Base marker during gecko profiler", OTHER, {});
+ PROFILER_MARKER_UNTYPED("Gecko marker during gecko profiler", OTHER, {});
+
+ // Write some Gecko Profiler samples.
+ ASSERT_EQ(WaitForSamplingState(), SamplingState::SamplingCompleted);
+
+ // Check that the Gecko Profiler profile contains at least the Base Profiler
+ // main thread samples.
+ UniquePtr<char[]> profile = profiler_get_profile();
+
+ profiler_stop();
+ ASSERT_TRUE(!profiler_is_active());
+
+ BASE_PROFILER_MARKER_UNTYPED("Base marker after gecko profiler", OTHER, {});
+ PROFILER_MARKER_UNTYPED("Gecko marker after gecko profiler", OTHER, {});
+
+ JSONOutputCheck(profile.get(), [](const Json::Value& aRoot) {
+ GET_JSON(threads, aRoot["threads"], Array);
+ {
+ bool found = false;
+ for (const Json::Value& thread : threads) {
+ ASSERT_TRUE(thread.isObject());
+ GET_JSON(name, thread["name"], String);
+ if (name.asString() == "GeckoMain") {
+ found = true;
+ EXPECT_JSON_ARRAY_EXCLUDES(thread["stringTable"], String,
+ "Base marker before base profiler");
+ EXPECT_JSON_ARRAY_EXCLUDES(thread["stringTable"], String,
+ "Gecko marker before base profiler");
+ EXPECT_JSON_ARRAY_CONTAINS(thread["stringTable"], String,
+ "Base marker during base profiler");
+ EXPECT_JSON_ARRAY_EXCLUDES(thread["stringTable"], String,
+ "Gecko marker during base profiler");
+ EXPECT_JSON_ARRAY_CONTAINS(thread["stringTable"], String,
+ "Base marker during gecko profiler");
+ EXPECT_JSON_ARRAY_CONTAINS(thread["stringTable"], String,
+ "Gecko marker during gecko profiler");
+ EXPECT_JSON_ARRAY_EXCLUDES(thread["stringTable"], String,
+ "Base marker after gecko profiler");
+ EXPECT_JSON_ARRAY_EXCLUDES(thread["stringTable"], String,
+ "Gecko marker after gecko profiler");
+ break;
+ }
+ }
+ EXPECT_TRUE(found);
+ }
+ });
+}
+
+static std::string_view GetFeatureName(uint32_t feature) {
+ switch (feature) {
+# define FEATURE_NAME(n_, str_, Name_, desc_) \
+ case ProfilerFeature::Name_: \
+ return str_;
+
+ PROFILER_FOR_EACH_FEATURE(FEATURE_NAME)
+
+# undef FEATURE_NAME
+
+ default:
+ return "?";
+ }
+}
+
+TEST(GeckoProfiler, FeatureCombinations)
+{
+ // Bug 1845606
+ #ifdef XP_WIN
+ if (!IsWin8OrLater()) {
+ return;
+ }
+ #endif
+
+ const char* filters[] = {"*"};
+
+ // List of features to test. Every combination of up to 3 of them will be
+ // tested, so be careful not to add too many to keep the test run at a
+ // reasonable time.
+ uint32_t featureList[] = {ProfilerFeature::JS,
+ ProfilerFeature::Screenshots,
+ ProfilerFeature::StackWalk,
+ ProfilerFeature::NoStackSampling,
+ ProfilerFeature::NativeAllocations,
+ ProfilerFeature::CPUUtilization,
+ ProfilerFeature::CPUAllThreads,
+ ProfilerFeature::SamplingAllThreads,
+ ProfilerFeature::MarkersAllThreads,
+ ProfilerFeature::UnregisteredThreads};
+ constexpr uint32_t featureCount = uint32_t(MOZ_ARRAY_LENGTH(featureList));
+
+ auto testFeatures = [&](uint32_t features,
+ const std::string& featuresString) {
+ SCOPED_TRACE(featuresString.c_str());
+
+ ASSERT_TRUE(!profiler_is_active());
+
+ profiler_start(PROFILER_DEFAULT_ENTRIES, PROFILER_DEFAULT_INTERVAL,
+ features, filters, MOZ_ARRAY_LENGTH(filters), 0);
+
+ ASSERT_TRUE(profiler_is_active());
+
+ // Write some Gecko Profiler samples.
+ EXPECT_EQ(WaitForSamplingState(),
+ (((features & ProfilerFeature::NoStackSampling) != 0) &&
+ ((features & (ProfilerFeature::CPUUtilization |
+ ProfilerFeature::CPUAllThreads)) == 0))
+ ? SamplingState::NoStackSamplingCompleted
+ : SamplingState::SamplingCompleted);
+
+ // Check that the profile looks valid. Note that we don't test feature-
+ // specific changes.
+ UniquePtr<char[]> profile = profiler_get_profile();
+ JSONOutputCheck(profile.get(), [](const Json::Value& aRoot) {});
+
+ profiler_stop();
+ ASSERT_TRUE(!profiler_is_active());
+ };
+
+ testFeatures(0, "Features: (none)");
+
+ for (uint32_t f1 = 0u; f1 < featureCount; ++f1) {
+ const uint32_t features1 = featureList[f1];
+ std::string features1String = "Features: ";
+ features1String += GetFeatureName(featureList[f1]);
+
+ testFeatures(features1, features1String);
+
+ for (uint32_t f2 = f1 + 1u; f2 < featureCount; ++f2) {
+ const uint32_t features12 = f1 | featureList[f2];
+ std::string features12String = features1String + " ";
+ features12String += GetFeatureName(featureList[f2]);
+
+ testFeatures(features12, features12String);
+
+ for (uint32_t f3 = f2 + 1u; f3 < featureCount; ++f3) {
+ const uint32_t features123 = features12 | featureList[f3];
+ std::string features123String = features12String + " ";
+ features123String += GetFeatureName(featureList[f3]);
+
+ testFeatures(features123, features123String);
+ }
+ }
+ }
+}
+
+static void CountCPUDeltas(const Json::Value& aThread, size_t& aOutSamplings,
+ uint64_t& aOutCPUDeltaSum) {
+ GET_JSON(samples, aThread["samples"], Object);
+ {
+ Json::ArrayIndex threadCPUDeltaIndex = 0;
+ GET_JSON(schema, samples["schema"], Object);
+ {
+ GET_JSON(jsonThreadCPUDeltaIndex, schema["threadCPUDelta"], UInt);
+ threadCPUDeltaIndex = jsonThreadCPUDeltaIndex.asUInt();
+ }
+
+ aOutSamplings = 0;
+ aOutCPUDeltaSum = 0;
+ GET_JSON(data, samples["data"], Array);
+ aOutSamplings = data.size();
+ for (const Json::Value& sample : data) {
+ ASSERT_TRUE(sample.isArray());
+ if (sample.isValidIndex(threadCPUDeltaIndex)) {
+ if (!sample[threadCPUDeltaIndex].isNull()) {
+ GET_JSON(cpuDelta, sample[threadCPUDeltaIndex], UInt64);
+ aOutCPUDeltaSum += uint64_t(cpuDelta.asUInt64());
+ }
+ }
+ }
+ }
+}
+
+TEST(GeckoProfiler, CPUUsage)
+{
+ profiler_init_main_thread_id();
+ ASSERT_TRUE(profiler_is_main_thread())
+ << "This test assumes it runs on the main thread";
+
+ const char* filters[] = {"GeckoMain", "Idle test", "Busy test"};
+
+ enum class TestThreadsState {
+ // Initial state, while constructing and starting the idle thread.
+ STARTING,
+ // Set by the idle thread just before running its main mostly-idle loop.
+ RUNNING1,
+ RUNNING2,
+ // Set by the main thread when it wants the idle thread to stop.
+ STOPPING
+ };
+ Atomic<TestThreadsState> testThreadsState{TestThreadsState::STARTING};
+
+ std::thread idle([&]() {
+ AUTO_PROFILER_REGISTER_THREAD("Idle test");
+ // Add a label to ensure that we have a non-empty stack, even if native
+ // stack-walking is not available.
+ AUTO_PROFILER_LABEL("Idle test", PROFILER);
+ ASSERT_TRUE(testThreadsState.compareExchange(TestThreadsState::STARTING,
+ TestThreadsState::RUNNING1) ||
+ testThreadsState.compareExchange(TestThreadsState::RUNNING1,
+ TestThreadsState::RUNNING2));
+
+ while (testThreadsState != TestThreadsState::STOPPING) {
+ // Sleep for multiple profiler intervals, so the profiler should have
+ // samples with zero CPU utilization.
+ PR_Sleep(PR_MillisecondsToInterval(PROFILER_DEFAULT_INTERVAL * 10));
+ }
+ });
+
+ std::thread busy([&]() {
+ AUTO_PROFILER_REGISTER_THREAD("Busy test");
+ // Add a label to ensure that we have a non-empty stack, even if native
+ // stack-walking is not available.
+ AUTO_PROFILER_LABEL("Busy test", PROFILER);
+ ASSERT_TRUE(testThreadsState.compareExchange(TestThreadsState::STARTING,
+ TestThreadsState::RUNNING1) ||
+ testThreadsState.compareExchange(TestThreadsState::RUNNING1,
+ TestThreadsState::RUNNING2));
+
+ while (testThreadsState != TestThreadsState::STOPPING) {
+ // Stay busy!
+ }
+ });
+
+ // Wait for idle thread to start running its main loop.
+ while (testThreadsState != TestThreadsState::RUNNING2) {
+ PR_Sleep(PR_MillisecondsToInterval(1));
+ }
+
+ // We want to ensure that CPU usage numbers are present whether or not we are
+ // collecting stack samples.
+ static constexpr bool scTestsWithOrWithoutStackSampling[] = {false, true};
+ for (const bool testWithNoStackSampling : scTestsWithOrWithoutStackSampling) {
+ ASSERT_TRUE(!profiler_is_active());
+ ASSERT_TRUE(!profiler_callback_after_sampling(
+ [&](SamplingState) { ASSERT_TRUE(false); }));
+
+ profiler_start(
+ PROFILER_DEFAULT_ENTRIES, PROFILER_DEFAULT_INTERVAL,
+ ProfilerFeature::StackWalk | ProfilerFeature::CPUUtilization |
+ (testWithNoStackSampling ? ProfilerFeature::NoStackSampling : 0),
+ filters, MOZ_ARRAY_LENGTH(filters), 0);
+ // Grab a few samples, each with a different label on the stack.
+# define SAMPLE_LABEL_PREFIX "CPUUsage sample label "
+ static constexpr const char* scSampleLabels[] = {
+ SAMPLE_LABEL_PREFIX "0", SAMPLE_LABEL_PREFIX "1",
+ SAMPLE_LABEL_PREFIX "2", SAMPLE_LABEL_PREFIX "3",
+ SAMPLE_LABEL_PREFIX "4", SAMPLE_LABEL_PREFIX "5",
+ SAMPLE_LABEL_PREFIX "6", SAMPLE_LABEL_PREFIX "7",
+ SAMPLE_LABEL_PREFIX "8", SAMPLE_LABEL_PREFIX "9"};
+ static constexpr size_t scSampleLabelCount =
+ (sizeof(scSampleLabels) / sizeof(scSampleLabels[0]));
+ // We'll do two samplings for each label.
+ static constexpr size_t scMinSamplings = scSampleLabelCount * 2;
+
+ for (const char* sampleLabel : scSampleLabels) {
+ AUTO_PROFILER_LABEL(sampleLabel, OTHER);
+ ASSERT_EQ(WaitForSamplingState(), SamplingState::SamplingCompleted);
+ // Note: There could have been a delay before this label above, where the
+ // profiler could have sampled the stack and missed the label. By forcing
+ // another sampling now, the label is guaranteed to be present.
+ ASSERT_EQ(WaitForSamplingState(), SamplingState::SamplingCompleted);
+ }
+
+ UniquePtr<char[]> profile = profiler_get_profile();
+
+ if (testWithNoStackSampling) {
+ // If we are testing nostacksampling, we shouldn't find this label prefix
+ // in the profile.
+ EXPECT_FALSE(strstr(profile.get(), SAMPLE_LABEL_PREFIX));
+ } else {
+ // In normal sampling mode, we should find all labels.
+ for (const char* sampleLabel : scSampleLabels) {
+ EXPECT_TRUE(strstr(profile.get(), sampleLabel));
+ }
+ }
+
+ JSONOutputCheck(profile.get(), [testWithNoStackSampling](
+ const Json::Value& aRoot) {
+ // Check that the "cpu" feature is present.
+ GET_JSON(meta, aRoot["meta"], Object);
+ {
+ GET_JSON(configuration, meta["configuration"], Object);
+ {
+ GET_JSON(features, configuration["features"], Array);
+ { EXPECT_JSON_ARRAY_CONTAINS(features, String, "cpu"); }
+ }
+ }
+
+ {
+ GET_JSON(sampleUnits, meta["sampleUnits"], Object);
+ {
+ EXPECT_EQ_JSON(sampleUnits["time"], String, "ms");
+ EXPECT_EQ_JSON(sampleUnits["eventDelay"], String, "ms");
+# if defined(GP_OS_windows) || defined(GP_OS_darwin) || \
+ defined(GP_OS_linux) || defined(GP_OS_android) || defined(GP_OS_freebsd)
+ // Note: The exact string is not important here.
+ EXPECT_TRUE(sampleUnits["threadCPUDelta"].isString())
+ << "There should be a sampleUnits.threadCPUDelta on this "
+ "platform";
+# else
+ EXPECT_FALSE(sampleUnits.isMember("threadCPUDelta"))
+ << "Unexpected sampleUnits.threadCPUDelta on this platform";;
+# endif
+ }
+ }
+
+ bool foundMain = false;
+ bool foundIdle = false;
+ uint64_t idleThreadCPUDeltaSum = 0u;
+ bool foundBusy = false;
+ uint64_t busyThreadCPUDeltaSum = 0u;
+
+ // Check that the sample schema contains "threadCPUDelta".
+ GET_JSON(threads, aRoot["threads"], Array);
+ for (const Json::Value& thread : threads) {
+ ASSERT_TRUE(thread.isObject());
+ GET_JSON(name, thread["name"], String);
+ if (name.asString() == "GeckoMain") {
+ foundMain = true;
+ GET_JSON(samples, thread["samples"], Object);
+ {
+ Json::ArrayIndex stackIndex = 0;
+ Json::ArrayIndex threadCPUDeltaIndex = 0;
+ GET_JSON(schema, samples["schema"], Object);
+ {
+ GET_JSON(jsonStackIndex, schema["stack"], UInt);
+ stackIndex = jsonStackIndex.asUInt();
+ GET_JSON(jsonThreadCPUDeltaIndex, schema["threadCPUDelta"], UInt);
+ threadCPUDeltaIndex = jsonThreadCPUDeltaIndex.asUInt();
+ }
+
+ std::set<uint64_t> stackLeaves; // To count distinct leaves.
+ unsigned threadCPUDeltaCount = 0;
+ GET_JSON(data, samples["data"], Array);
+ if (testWithNoStackSampling) {
+ // When not sampling stacks, the first sampling loop will have no
+ // running times, so it won't output anything.
+ EXPECT_GE(data.size(), scMinSamplings - 1);
+ } else {
+ EXPECT_GE(data.size(), scMinSamplings);
+ }
+ for (const Json::Value& sample : data) {
+ ASSERT_TRUE(sample.isArray());
+ if (sample.isValidIndex(stackIndex)) {
+ if (!sample[stackIndex].isNull()) {
+ GET_JSON(stack, sample[stackIndex], UInt64);
+ stackLeaves.insert(stack.asUInt64());
+ }
+ }
+ if (sample.isValidIndex(threadCPUDeltaIndex)) {
+ if (!sample[threadCPUDeltaIndex].isNull()) {
+ EXPECT_TRUE(sample[threadCPUDeltaIndex].isUInt64());
+ ++threadCPUDeltaCount;
+ }
+ }
+ }
+
+ if (testWithNoStackSampling) {
+ // in nostacksampling mode, there should only be one kind of stack
+ // leaf (the root).
+ EXPECT_EQ(stackLeaves.size(), 1u);
+ } else {
+ // in normal sampling mode, there should be at least one kind of
+ // stack leaf for each distinct label.
+ EXPECT_GE(stackLeaves.size(), scSampleLabelCount);
+ }
+
+# if defined(GP_OS_windows) || defined(GP_OS_darwin) || \
+ defined(GP_OS_linux) || defined(GP_OS_android) || defined(GP_OS_freebsd)
+ EXPECT_GE(threadCPUDeltaCount, data.size() - 1u)
+ << "There should be 'threadCPUDelta' values in all but 1 "
+ "samples";
+# else
+ // All "threadCPUDelta" data should be absent or null on unsupported
+ // platforms.
+ EXPECT_EQ(threadCPUDeltaCount, 0u);
+# endif
+ }
+ } else if (name.asString() == "Idle test") {
+ foundIdle = true;
+ size_t samplings;
+ CountCPUDeltas(thread, samplings, idleThreadCPUDeltaSum);
+ if (testWithNoStackSampling) {
+ // When not sampling stacks, the first sampling loop will have no
+ // running times, so it won't output anything.
+ EXPECT_GE(samplings, scMinSamplings - 1);
+ } else {
+ EXPECT_GE(samplings, scMinSamplings);
+ }
+# if !(defined(GP_OS_windows) || defined(GP_OS_darwin) || \
+ defined(GP_OS_linux) || defined(GP_OS_android) || \
+ defined(GP_OS_freebsd))
+ // All "threadCPUDelta" data should be absent or null on unsupported
+ // platforms.
+ EXPECT_EQ(idleThreadCPUDeltaSum, 0u);
+# endif
+ } else if (name.asString() == "Busy test") {
+ foundBusy = true;
+ size_t samplings;
+ CountCPUDeltas(thread, samplings, busyThreadCPUDeltaSum);
+ if (testWithNoStackSampling) {
+ // When not sampling stacks, the first sampling loop will have no
+ // running times, so it won't output anything.
+ EXPECT_GE(samplings, scMinSamplings - 1);
+ } else {
+ EXPECT_GE(samplings, scMinSamplings);
+ }
+# if !(defined(GP_OS_windows) || defined(GP_OS_darwin) || \
+ defined(GP_OS_linux) || defined(GP_OS_android) || \
+ defined(GP_OS_freebsd))
+ // All "threadCPUDelta" data should be absent or null on unsupported
+ // platforms.
+ EXPECT_EQ(busyThreadCPUDeltaSum, 0u);
+# endif
+ }
+ }
+
+ EXPECT_TRUE(foundMain);
+ EXPECT_TRUE(foundIdle);
+ EXPECT_TRUE(foundBusy);
+ EXPECT_LE(idleThreadCPUDeltaSum, busyThreadCPUDeltaSum);
+ });
+
+ // Note: There is no non-racy way to test for SamplingState::JustStopped, as
+ // it would require coordination between `profiler_stop()` and another
+ // thread doing `profiler_callback_after_sampling()` at just the right
+ // moment.
+
+ profiler_stop();
+ ASSERT_TRUE(!profiler_is_active());
+ ASSERT_TRUE(!profiler_callback_after_sampling(
+ [&](SamplingState) { ASSERT_TRUE(false); }));
+ }
+
+ testThreadsState = TestThreadsState::STOPPING;
+ busy.join();
+ idle.join();
+}
+
+TEST(GeckoProfiler, AllThreads)
+{
+ // Bug 1845606
+ #ifdef XP_WIN
+ if (!IsWin8OrLater()) {
+ return;
+ }
+ #endif
+
+ profiler_init_main_thread_id();
+ ASSERT_TRUE(profiler_is_main_thread())
+ << "This test assumes it runs on the main thread";
+
+ ASSERT_EQ(static_cast<uint32_t>(ThreadProfilingFeatures::Any), 1u + 2u + 4u)
+ << "This test assumes that there are 3 binary choices 1+2+4; "
+ "Is this test up to date?";
+
+ for (uint32_t threadFeaturesBinary = 0u;
+ threadFeaturesBinary <=
+ static_cast<uint32_t>(ThreadProfilingFeatures::Any);
+ ++threadFeaturesBinary) {
+ ThreadProfilingFeatures threadFeatures =
+ static_cast<ThreadProfilingFeatures>(threadFeaturesBinary);
+ const bool threadCPU = DoFeaturesIntersect(
+ threadFeatures, ThreadProfilingFeatures::CPUUtilization);
+ const bool threadSampling =
+ DoFeaturesIntersect(threadFeatures, ThreadProfilingFeatures::Sampling);
+ const bool threadMarkers =
+ DoFeaturesIntersect(threadFeatures, ThreadProfilingFeatures::Markers);
+
+ ASSERT_TRUE(!profiler_is_active());
+
+ uint32_t features = ProfilerFeature::StackWalk;
+ std::string featuresString = "Features: StackWalk Threads";
+ if (threadCPU) {
+ features |= ProfilerFeature::CPUAllThreads;
+ featuresString += " CPUAllThreads";
+ }
+ if (threadSampling) {
+ features |= ProfilerFeature::SamplingAllThreads;
+ featuresString += " SamplingAllThreads";
+ }
+ if (threadMarkers) {
+ features |= ProfilerFeature::MarkersAllThreads;
+ featuresString += " MarkersAllThreads";
+ }
+
+ SCOPED_TRACE(featuresString.c_str());
+
+ const char* filters[] = {"GeckoMain", "Selected"};
+
+ EXPECT_FALSE(profiler_thread_is_being_profiled(
+ ThreadProfilingFeatures::CPUUtilization));
+ EXPECT_FALSE(
+ profiler_thread_is_being_profiled(ThreadProfilingFeatures::Sampling));
+ EXPECT_FALSE(
+ profiler_thread_is_being_profiled(ThreadProfilingFeatures::Markers));
+ EXPECT_FALSE(profiler_thread_is_being_profiled_for_markers());
+
+ profiler_start(PROFILER_DEFAULT_ENTRIES, PROFILER_DEFAULT_INTERVAL,
+ features, filters, MOZ_ARRAY_LENGTH(filters), 0);
+
+ EXPECT_TRUE(profiler_thread_is_being_profiled(
+ ThreadProfilingFeatures::CPUUtilization));
+ EXPECT_TRUE(
+ profiler_thread_is_being_profiled(ThreadProfilingFeatures::Sampling));
+ EXPECT_TRUE(
+ profiler_thread_is_being_profiled(ThreadProfilingFeatures::Markers));
+ EXPECT_TRUE(profiler_thread_is_being_profiled_for_markers());
+
+ // This will signal all threads to stop spinning.
+ Atomic<bool> stopThreads{false};
+
+ Atomic<int> selectedThreadSpins{0};
+ std::thread selectedThread([&]() {
+ AUTO_PROFILER_REGISTER_THREAD("Selected test thread");
+ // Add a label to ensure that we have a non-empty stack, even if native
+ // stack-walking is not available.
+ AUTO_PROFILER_LABEL("Selected test thread", PROFILER);
+ EXPECT_TRUE(profiler_thread_is_being_profiled(
+ ThreadProfilingFeatures::CPUUtilization));
+ EXPECT_TRUE(
+ profiler_thread_is_being_profiled(ThreadProfilingFeatures::Sampling));
+ EXPECT_TRUE(
+ profiler_thread_is_being_profiled(ThreadProfilingFeatures::Markers));
+ EXPECT_TRUE(profiler_thread_is_being_profiled_for_markers());
+ while (!stopThreads) {
+ PROFILER_MARKER_UNTYPED("Spinning Selected!", PROFILER);
+ ++selectedThreadSpins;
+ PR_Sleep(PR_MillisecondsToInterval(1));
+ }
+ });
+
+ Atomic<int> unselectedThreadSpins{0};
+ std::thread unselectedThread([&]() {
+ AUTO_PROFILER_REGISTER_THREAD("Registered test thread");
+ // Add a label to ensure that we have a non-empty stack, even if native
+ // stack-walking is not available.
+ AUTO_PROFILER_LABEL("Registered test thread", PROFILER);
+ // This thread is *not* selected for full profiling, but it may still be
+ // profiled depending on the -allthreads features.
+ EXPECT_EQ(profiler_thread_is_being_profiled(
+ ThreadProfilingFeatures::CPUUtilization),
+ threadCPU);
+ EXPECT_EQ(
+ profiler_thread_is_being_profiled(ThreadProfilingFeatures::Sampling),
+ threadSampling);
+ EXPECT_EQ(
+ profiler_thread_is_being_profiled(ThreadProfilingFeatures::Markers),
+ threadMarkers);
+ EXPECT_EQ(profiler_thread_is_being_profiled_for_markers(), threadMarkers);
+ while (!stopThreads) {
+ PROFILER_MARKER_UNTYPED("Spinning Registered!", PROFILER);
+ ++unselectedThreadSpins;
+ PR_Sleep(PR_MillisecondsToInterval(1));
+ }
+ });
+
+ Atomic<int> unregisteredThreadSpins{0};
+ std::thread unregisteredThread([&]() {
+ // No `AUTO_PROFILER_REGISTER_THREAD` here.
+ EXPECT_FALSE(profiler_thread_is_being_profiled(
+ ThreadProfilingFeatures::CPUUtilization));
+ EXPECT_FALSE(
+ profiler_thread_is_being_profiled(ThreadProfilingFeatures::Sampling));
+ EXPECT_FALSE(
+ profiler_thread_is_being_profiled(ThreadProfilingFeatures::Markers));
+ EXPECT_FALSE(profiler_thread_is_being_profiled_for_markers());
+ while (!stopThreads) {
+ PROFILER_MARKER_UNTYPED("Spinning Unregistered!", PROFILER);
+ ++unregisteredThreadSpins;
+ PR_Sleep(PR_MillisecondsToInterval(1));
+ }
+ });
+
+ // Wait for all threads to have started at least one spin.
+ while (selectedThreadSpins == 0 || unselectedThreadSpins == 0 ||
+ unregisteredThreadSpins == 0) {
+ PR_Sleep(PR_MillisecondsToInterval(1));
+ }
+
+ // Wait until the sampler has done at least one loop.
+ ASSERT_EQ(WaitForSamplingState(), SamplingState::SamplingCompleted);
+
+ // Restart the spin counts, and ensure each threads will do at least one
+ // more spin each. Since spins are increased after PROFILER_MARKER calls, in
+ // the worst case, each thread will have attempted to record at least one
+ // marker.
+ selectedThreadSpins = 0;
+ unselectedThreadSpins = 0;
+ unregisteredThreadSpins = 0;
+ while (selectedThreadSpins < 1 && unselectedThreadSpins < 1 &&
+ unregisteredThreadSpins < 1) {
+ ASSERT_EQ(WaitForSamplingState(), SamplingState::SamplingCompleted);
+ }
+
+ profiler_pause();
+ UniquePtr<char[]> profile = profiler_get_profile();
+
+ profiler_stop();
+ stopThreads = true;
+ unregisteredThread.join();
+ unselectedThread.join();
+ selectedThread.join();
+
+ JSONOutputCheck(profile.get(), [&](const Json::Value& aRoot) {
+ GET_JSON(threads, aRoot["threads"], Array);
+ int foundMain = 0;
+ int foundSelected = 0;
+ int foundSelectedMarker = 0;
+ int foundUnselected = 0;
+ int foundUnselectedMarker = 0;
+ for (const Json::Value& thread : threads) {
+ ASSERT_TRUE(thread.isObject());
+ GET_JSON(stringTable, thread["stringTable"], Array);
+ GET_JSON(name, thread["name"], String);
+ if (name.asString() == "GeckoMain") {
+ ++foundMain;
+ // Don't check the main thread further in this test.
+
+ } else if (name.asString() == "Selected test thread") {
+ ++foundSelected;
+
+ GET_JSON(samples, thread["samples"], Object);
+ GET_JSON(samplesData, samples["data"], Array);
+ EXPECT_GT(samplesData.size(), 0u);
+
+ GET_JSON(markers, thread["markers"], Object);
+ GET_JSON(markersData, markers["data"], Array);
+ for (const Json::Value& marker : markersData) {
+ const unsigned int NAME = 0u;
+ ASSERT_TRUE(marker[NAME].isUInt()); // name id
+ GET_JSON(name, stringTable[marker[NAME].asUInt()], String);
+ if (name == "Spinning Selected!") {
+ ++foundSelectedMarker;
+ }
+ }
+ } else if (name.asString() == "Registered test thread") {
+ ++foundUnselected;
+
+ GET_JSON(samples, thread["samples"], Object);
+ GET_JSON(samplesData, samples["data"], Array);
+ if (threadCPU || threadSampling) {
+ EXPECT_GT(samplesData.size(), 0u);
+ } else {
+ EXPECT_EQ(samplesData.size(), 0u);
+ }
+
+ GET_JSON(markers, thread["markers"], Object);
+ GET_JSON(markersData, markers["data"], Array);
+ for (const Json::Value& marker : markersData) {
+ const unsigned int NAME = 0u;
+ ASSERT_TRUE(marker[NAME].isUInt()); // name id
+ GET_JSON(name, stringTable[marker[NAME].asUInt()], String);
+ if (name == "Spinning Registered!") {
+ ++foundUnselectedMarker;
+ }
+ }
+
+ } else {
+ EXPECT_STRNE(name.asString().c_str(),
+ "Unregistered test thread label");
+ }
+ }
+ EXPECT_EQ(foundMain, 1);
+ EXPECT_EQ(foundSelected, 1);
+ EXPECT_GT(foundSelectedMarker, 0);
+ EXPECT_EQ(foundUnselected,
+ (threadCPU || threadSampling || threadMarkers) ? 1 : 0)
+ << "Unselected thread should only be present if at least one of the "
+ "allthreads feature is on";
+ if (threadMarkers) {
+ EXPECT_GT(foundUnselectedMarker, 0);
+ } else {
+ EXPECT_EQ(foundUnselectedMarker, 0);
+ }
+ });
+ }
+}
+
+TEST(GeckoProfiler, FailureHandling)
+{
+ profiler_init_main_thread_id();
+ ASSERT_TRUE(profiler_is_main_thread())
+ << "This test assumes it runs on the main thread";
+
+ uint32_t features = ProfilerFeature::StackWalk;
+ const char* filters[] = {"GeckoMain"};
+ profiler_start(PROFILER_DEFAULT_ENTRIES, PROFILER_DEFAULT_INTERVAL, features,
+ filters, MOZ_ARRAY_LENGTH(filters), 0);
+
+ ASSERT_EQ(WaitForSamplingState(), SamplingState::SamplingCompleted);
+
+ // User-defined marker type that generates a failure when streaming JSON.
+ struct GtestFailingMarker {
+ static constexpr Span<const char> MarkerTypeName() {
+ return MakeStringSpan("markers-gtest-failing");
+ }
+ static void StreamJSONMarkerData(
+ mozilla::baseprofiler::SpliceableJSONWriter& aWriter) {
+ aWriter.SetFailure("boom!");
+ }
+ static mozilla::MarkerSchema MarkerTypeDisplay() {
+ return mozilla::MarkerSchema::SpecialFrontendLocation{};
+ }
+ };
+ EXPECT_TRUE(profiler_add_marker("Gtest failing marker",
+ geckoprofiler::category::OTHER, {},
+ GtestFailingMarker{}));
+
+ ASSERT_EQ(WaitForSamplingState(), SamplingState::SamplingCompleted);
+ profiler_pause();
+
+ FailureLatchSource failureLatch;
+ SpliceableChunkedJSONWriter w{failureLatch};
+ EXPECT_FALSE(w.Failed());
+ ASSERT_FALSE(w.GetFailure());
+
+ w.Start();
+ EXPECT_FALSE(w.Failed());
+ ASSERT_FALSE(w.GetFailure());
+
+ // The marker will cause a failure during this function call.
+ EXPECT_FALSE(::profiler_stream_json_for_this_process(w).isOk());
+ EXPECT_TRUE(w.Failed());
+ ASSERT_TRUE(w.GetFailure());
+ EXPECT_EQ(strcmp(w.GetFailure(), "boom!"), 0);
+
+ // Already failed, check that we don't crash or reset the failure.
+ EXPECT_FALSE(::profiler_stream_json_for_this_process(w).isOk());
+ EXPECT_TRUE(w.Failed());
+ ASSERT_TRUE(w.GetFailure());
+ EXPECT_EQ(strcmp(w.GetFailure(), "boom!"), 0);
+
+ w.End();
+
+ profiler_stop();
+
+ EXPECT_TRUE(w.Failed());
+ ASSERT_TRUE(w.GetFailure());
+ EXPECT_EQ(strcmp(w.GetFailure(), "boom!"), 0);
+
+ UniquePtr<char[]> profile = w.ChunkedWriteFunc().CopyData();
+ ASSERT_EQ(profile.get(), nullptr);
+}
+
+TEST(GeckoProfiler, NoMarkerStacks)
+{
+ uint32_t features = ProfilerFeature::NoMarkerStacks;
+ const char* filters[] = {"GeckoMain"};
+
+ ASSERT_TRUE(!profiler_get_profile());
+
+ // Make sure that profiler_capture_backtrace returns nullptr when the profiler
+ // is not active.
+ ASSERT_TRUE(!profiler_capture_backtrace());
+
+ {
+ // Start the profiler without the NoMarkerStacks feature and make sure we
+ // capture stacks.
+ profiler_start(PROFILER_DEFAULT_ENTRIES, PROFILER_DEFAULT_INTERVAL,
+ /* features */ 0, filters, MOZ_ARRAY_LENGTH(filters), 0);
+
+ ASSERT_TRUE(profiler_capture_backtrace());
+ profiler_stop();
+ }
+
+ // Start the profiler without the NoMarkerStacks feature and make sure we
+ // don't capture stacks.
+ profiler_start(PROFILER_DEFAULT_ENTRIES, PROFILER_DEFAULT_INTERVAL, features,
+ filters, MOZ_ARRAY_LENGTH(filters), 0);
+
+ // Make sure that the active features has the NoMarkerStacks feature.
+ mozilla::Maybe<uint32_t> activeFeatures = profiler_features_if_active();
+ ASSERT_TRUE(activeFeatures.isSome());
+ ASSERT_TRUE(ProfilerFeature::HasNoMarkerStacks(*activeFeatures));
+
+ // Make sure we don't capture stacks.
+ ASSERT_TRUE(!profiler_capture_backtrace());
+
+ // Add a marker with a stack to test.
+ EXPECT_TRUE(profiler_add_marker(
+ "Text with stack", geckoprofiler::category::OTHER, MarkerStack::Capture(),
+ geckoprofiler::markers::TextMarker{}, ""));
+
+ UniquePtr<char[]> profile = profiler_get_profile();
+ JSONOutputCheck(profile.get(), [&](const Json::Value& aRoot) {
+ // Check that the meta.configuration.features array contains
+ // "nomarkerstacks".
+ GET_JSON(meta, aRoot["meta"], Object);
+ {
+ GET_JSON(configuration, meta["configuration"], Object);
+ {
+ GET_JSON(features, configuration["features"], Array);
+ {
+ EXPECT_EQ(features.size(), 1u);
+ EXPECT_JSON_ARRAY_CONTAINS(features, String, "nomarkerstacks");
+ }
+ }
+ }
+
+ // Make sure that the marker we captured doesn't have a stack.
+ GET_JSON(threads, aRoot["threads"], Array);
+ {
+ ASSERT_EQ(threads.size(), 1u);
+ GET_JSON(thread0, threads[0], Object);
+ {
+ GET_JSON(markers, thread0["markers"], Object);
+ {
+ GET_JSON(data, markers["data"], Array);
+ {
+ const unsigned int NAME = 0u;
+ const unsigned int PAYLOAD = 5u;
+ bool foundMarker = false;
+ GET_JSON(stringTable, thread0["stringTable"], Array);
+
+ for (const Json::Value& marker : data) {
+ // Even though we only added one marker, some markers like
+ // NotifyObservers are being added as well. Let's iterate over
+ // them and make sure that we have the one we added explicitly and
+ // check its stack doesn't exist.
+ GET_JSON(name, stringTable[marker[NAME].asUInt()], String);
+ std::string nameString = name.asString();
+
+ if (nameString == "Text with stack") {
+ // Make sure that the marker doesn't have a stack.
+ foundMarker = true;
+ EXPECT_FALSE(marker[PAYLOAD].isNull());
+ EXPECT_TRUE(marker[PAYLOAD]["stack"].isNull());
+ }
+ }
+
+ EXPECT_TRUE(foundMarker);
+ }
+ }
+ }
+ }
+ });
+
+ profiler_stop();
+
+ ASSERT_TRUE(!profiler_get_profile());
+}
+
+#endif // MOZ_GECKO_PROFILER
diff --git a/tools/profiler/tests/gtest/LulTest.cpp b/tools/profiler/tests/gtest/LulTest.cpp
new file mode 100644
index 0000000000..159a366567
--- /dev/null
+++ b/tools/profiler/tests/gtest/LulTest.cpp
@@ -0,0 +1,51 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "gtest/gtest.h"
+#include "mozilla/Atomics.h"
+#include "LulMain.h"
+#include "GeckoProfiler.h" // for TracingKind
+#include "platform-linux-lul.h" // for read_procmaps
+
+// Set this to 0 to make LUL be completely silent during tests.
+// Set it to 1 to get logging output from LUL, presumably for
+// the purpose of debugging it.
+#define DEBUG_LUL_TEST 0
+
+// LUL needs a callback for its logging sink.
+static void gtest_logging_sink_for_LulIntegration(const char* str) {
+ if (DEBUG_LUL_TEST == 0) {
+ return;
+ }
+ // Ignore any trailing \n, since LOG will add one anyway.
+ size_t n = strlen(str);
+ if (n > 0 && str[n - 1] == '\n') {
+ char* tmp = strdup(str);
+ tmp[n - 1] = 0;
+ fprintf(stderr, "LUL-in-gtest: %s\n", tmp);
+ free(tmp);
+ } else {
+ fprintf(stderr, "LUL-in-gtest: %s\n", str);
+ }
+}
+
+TEST(LulIntegration, unwind_consistency)
+{
+ // Set up LUL and get it to read unwind info for libxul.so, which is
+ // all we care about here, plus (incidentally) practically every
+ // other object in the process too.
+ lul::LUL* lul = new lul::LUL(gtest_logging_sink_for_LulIntegration);
+ read_procmaps(lul);
+
+ // Run unwind tests and receive information about how many there
+ // were and how many were successful.
+ lul->EnableUnwinding();
+ int nTests = 0, nTestsPassed = 0;
+ RunLulUnitTests(&nTests, &nTestsPassed, lul);
+ EXPECT_TRUE(nTests == 6) << "Unexpected number of tests";
+ EXPECT_EQ(nTestsPassed, nTests) << "Not all tests passed";
+
+ delete lul;
+}
diff --git a/tools/profiler/tests/gtest/LulTestDwarf.cpp b/tools/profiler/tests/gtest/LulTestDwarf.cpp
new file mode 100644
index 0000000000..55373ec093
--- /dev/null
+++ b/tools/profiler/tests/gtest/LulTestDwarf.cpp
@@ -0,0 +1,2733 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "gtest/gtest.h"
+#include "gmock/gmock.h"
+#include "LulCommonExt.h"
+#include "LulDwarfExt.h"
+#include "LulDwarfInt.h"
+#include "LulTestInfrastructure.h"
+
+using lul_test::CFISection;
+using lul_test::test_assembler::kBigEndian;
+using lul_test::test_assembler::kLittleEndian;
+using lul_test::test_assembler::Label;
+using testing::_;
+using testing::InSequence;
+using testing::Return;
+using testing::Sequence;
+using testing::Test;
+
+#define PERHAPS_WRITE_DEBUG_FRAME_FILE(name, section) /**/
+#define PERHAPS_WRITE_EH_FRAME_FILE(name, section) /**/
+
+// Set this to 0 to make LUL be completely silent during tests.
+// Set it to 1 to get logging output from LUL, presumably for
+// the purpose of debugging it.
+#define DEBUG_LUL_TEST_DWARF 0
+
+// LUL needs a callback for its logging sink.
+static void gtest_logging_sink_for_LulTestDwarf(const char* str) {
+ if (DEBUG_LUL_TEST_DWARF == 0) {
+ return;
+ }
+ // Ignore any trailing \n, since LOG will add one anyway.
+ size_t n = strlen(str);
+ if (n > 0 && str[n - 1] == '\n') {
+ char* tmp = strdup(str);
+ tmp[n - 1] = 0;
+ fprintf(stderr, "LUL-in-gtest: %s\n", tmp);
+ free(tmp);
+ } else {
+ fprintf(stderr, "LUL-in-gtest: %s\n", str);
+ }
+}
+
+namespace lul {
+
+class MockCallFrameInfoHandler : public CallFrameInfo::Handler {
+ public:
+ MOCK_METHOD6(Entry,
+ bool(size_t offset, uint64 address, uint64 length, uint8 version,
+ const std::string& augmentation, unsigned return_address));
+ MOCK_METHOD2(UndefinedRule, bool(uint64 address, int reg));
+ MOCK_METHOD2(SameValueRule, bool(uint64 address, int reg));
+ MOCK_METHOD4(OffsetRule,
+ bool(uint64 address, int reg, int base_register, long offset));
+ MOCK_METHOD4(ValOffsetRule,
+ bool(uint64 address, int reg, int base_register, long offset));
+ MOCK_METHOD3(RegisterRule, bool(uint64 address, int reg, int base_register));
+ MOCK_METHOD3(ExpressionRule,
+ bool(uint64 address, int reg, const ImageSlice& expression));
+ MOCK_METHOD3(ValExpressionRule,
+ bool(uint64 address, int reg, const ImageSlice& expression));
+ MOCK_METHOD0(End, bool());
+ MOCK_METHOD2(PersonalityRoutine, bool(uint64 address, bool indirect));
+ MOCK_METHOD2(LanguageSpecificDataArea, bool(uint64 address, bool indirect));
+ MOCK_METHOD0(SignalHandler, bool());
+};
+
+class MockCallFrameErrorReporter : public CallFrameInfo::Reporter {
+ public:
+ MockCallFrameErrorReporter()
+ : Reporter(gtest_logging_sink_for_LulTestDwarf, "mock filename",
+ "mock section") {}
+ MOCK_METHOD2(Incomplete, void(uint64, CallFrameInfo::EntryKind));
+ MOCK_METHOD1(EarlyEHTerminator, void(uint64));
+ MOCK_METHOD2(CIEPointerOutOfRange, void(uint64, uint64));
+ MOCK_METHOD2(BadCIEId, void(uint64, uint64));
+ MOCK_METHOD2(UnrecognizedVersion, void(uint64, int version));
+ MOCK_METHOD2(UnrecognizedAugmentation, void(uint64, const string&));
+ MOCK_METHOD2(InvalidPointerEncoding, void(uint64, uint8));
+ MOCK_METHOD2(UnusablePointerEncoding, void(uint64, uint8));
+ MOCK_METHOD2(RestoreInCIE, void(uint64, uint64));
+ MOCK_METHOD3(BadInstruction, void(uint64, CallFrameInfo::EntryKind, uint64));
+ MOCK_METHOD3(NoCFARule, void(uint64, CallFrameInfo::EntryKind, uint64));
+ MOCK_METHOD3(EmptyStateStack, void(uint64, CallFrameInfo::EntryKind, uint64));
+ MOCK_METHOD3(ClearingCFARule, void(uint64, CallFrameInfo::EntryKind, uint64));
+};
+
+struct CFIFixture {
+ enum { kCFARegister = CallFrameInfo::Handler::kCFARegister };
+
+ CFIFixture() {
+ // Default expectations for the data handler.
+ //
+ // - Leave Entry and End without expectations, as it's probably a
+ // good idea to set those explicitly in each test.
+ //
+ // - Expect the *Rule functions to not be called,
+ // so that each test can simply list the calls they expect.
+ //
+ // I gather I could use StrictMock for this, but the manual seems
+ // to suggest using that only as a last resort, and this isn't so
+ // bad.
+ EXPECT_CALL(handler, UndefinedRule(_, _)).Times(0);
+ EXPECT_CALL(handler, SameValueRule(_, _)).Times(0);
+ EXPECT_CALL(handler, OffsetRule(_, _, _, _)).Times(0);
+ EXPECT_CALL(handler, ValOffsetRule(_, _, _, _)).Times(0);
+ EXPECT_CALL(handler, RegisterRule(_, _, _)).Times(0);
+ EXPECT_CALL(handler, ExpressionRule(_, _, _)).Times(0);
+ EXPECT_CALL(handler, ValExpressionRule(_, _, _)).Times(0);
+ EXPECT_CALL(handler, PersonalityRoutine(_, _)).Times(0);
+ EXPECT_CALL(handler, LanguageSpecificDataArea(_, _)).Times(0);
+ EXPECT_CALL(handler, SignalHandler()).Times(0);
+
+ // Default expectations for the error/warning reporer.
+ EXPECT_CALL(reporter, Incomplete(_, _)).Times(0);
+ EXPECT_CALL(reporter, EarlyEHTerminator(_)).Times(0);
+ EXPECT_CALL(reporter, CIEPointerOutOfRange(_, _)).Times(0);
+ EXPECT_CALL(reporter, BadCIEId(_, _)).Times(0);
+ EXPECT_CALL(reporter, UnrecognizedVersion(_, _)).Times(0);
+ EXPECT_CALL(reporter, UnrecognizedAugmentation(_, _)).Times(0);
+ EXPECT_CALL(reporter, InvalidPointerEncoding(_, _)).Times(0);
+ EXPECT_CALL(reporter, UnusablePointerEncoding(_, _)).Times(0);
+ EXPECT_CALL(reporter, RestoreInCIE(_, _)).Times(0);
+ EXPECT_CALL(reporter, BadInstruction(_, _, _)).Times(0);
+ EXPECT_CALL(reporter, NoCFARule(_, _, _)).Times(0);
+ EXPECT_CALL(reporter, EmptyStateStack(_, _, _)).Times(0);
+ EXPECT_CALL(reporter, ClearingCFARule(_, _, _)).Times(0);
+ }
+
+ MockCallFrameInfoHandler handler;
+ MockCallFrameErrorReporter reporter;
+};
+
+class LulDwarfCFI : public CFIFixture, public Test {};
+
+TEST_F(LulDwarfCFI, EmptyRegion) {
+ EXPECT_CALL(handler, Entry(_, _, _, _, _, _)).Times(0);
+ EXPECT_CALL(handler, End()).Times(0);
+ static const char data[1] = {42};
+
+ ByteReader reader(ENDIANNESS_BIG);
+ CallFrameInfo parser(data, 0, &reader, &handler, &reporter);
+ EXPECT_TRUE(parser.Start());
+}
+
+TEST_F(LulDwarfCFI, IncompleteLength32) {
+ CFISection section(kBigEndian, 8);
+ section
+ // Not even long enough for an initial length.
+ .D16(0xa0f)
+ // Padding to keep valgrind happy. We subtract these off when we
+ // construct the parser.
+ .D16(0);
+
+ EXPECT_CALL(handler, Entry(_, _, _, _, _, _)).Times(0);
+ EXPECT_CALL(handler, End()).Times(0);
+
+ EXPECT_CALL(reporter, Incomplete(_, CallFrameInfo::kUnknown))
+ .WillOnce(Return());
+
+ string contents;
+ ASSERT_TRUE(section.GetContents(&contents));
+
+ ByteReader reader(ENDIANNESS_BIG);
+ reader.SetAddressSize(8);
+ CallFrameInfo parser(contents.data(), contents.size() - 2, &reader, &handler,
+ &reporter);
+ EXPECT_FALSE(parser.Start());
+}
+
+TEST_F(LulDwarfCFI, IncompleteLength64) {
+ CFISection section(kLittleEndian, 4);
+ section
+ // An incomplete 64-bit DWARF initial length.
+ .D32(0xffffffff)
+ .D32(0x71fbaec2)
+ // Padding to keep valgrind happy. We subtract these off when we
+ // construct the parser.
+ .D32(0);
+
+ EXPECT_CALL(handler, Entry(_, _, _, _, _, _)).Times(0);
+ EXPECT_CALL(handler, End()).Times(0);
+
+ EXPECT_CALL(reporter, Incomplete(_, CallFrameInfo::kUnknown))
+ .WillOnce(Return());
+
+ string contents;
+ ASSERT_TRUE(section.GetContents(&contents));
+
+ ByteReader reader(ENDIANNESS_LITTLE);
+ reader.SetAddressSize(4);
+ CallFrameInfo parser(contents.data(), contents.size() - 4, &reader, &handler,
+ &reporter);
+ EXPECT_FALSE(parser.Start());
+}
+
+TEST_F(LulDwarfCFI, IncompleteId32) {
+ CFISection section(kBigEndian, 8);
+ section
+ .D32(3) // Initial length, not long enough for id
+ .D8(0xd7)
+ .D8(0xe5)
+ .D8(0xf1) // incomplete id
+ .CIEHeader(8727, 3983, 8889, 3, "")
+ .FinishEntry();
+
+ EXPECT_CALL(handler, Entry(_, _, _, _, _, _)).Times(0);
+ EXPECT_CALL(handler, End()).Times(0);
+
+ EXPECT_CALL(reporter, Incomplete(_, CallFrameInfo::kUnknown))
+ .WillOnce(Return());
+
+ string contents;
+ ASSERT_TRUE(section.GetContents(&contents));
+
+ ByteReader reader(ENDIANNESS_BIG);
+ reader.SetAddressSize(8);
+ CallFrameInfo parser(contents.data(), contents.size(), &reader, &handler,
+ &reporter);
+ EXPECT_FALSE(parser.Start());
+}
+
+TEST_F(LulDwarfCFI, BadId32) {
+ CFISection section(kBigEndian, 8);
+ section
+ .D32(0x100) // Initial length
+ .D32(0xe802fade) // bogus ID
+ .Append(0x100 - 4, 0x42); // make the length true
+ section.CIEHeader(1672, 9872, 8529, 3, "").FinishEntry();
+
+ EXPECT_CALL(handler, Entry(_, _, _, _, _, _)).Times(0);
+ EXPECT_CALL(handler, End()).Times(0);
+
+ EXPECT_CALL(reporter, CIEPointerOutOfRange(_, 0xe802fade)).WillOnce(Return());
+
+ string contents;
+ ASSERT_TRUE(section.GetContents(&contents));
+
+ ByteReader reader(ENDIANNESS_BIG);
+ reader.SetAddressSize(8);
+ CallFrameInfo parser(contents.data(), contents.size(), &reader, &handler,
+ &reporter);
+ EXPECT_FALSE(parser.Start());
+}
+
+// A lone CIE shouldn't cause any handler calls.
+TEST_F(LulDwarfCFI, SingleCIE) {
+ CFISection section(kLittleEndian, 4);
+ section.CIEHeader(0xffe799a8, 0x3398dcdd, 0x6e9683de, 3, "");
+ section.Append(10, lul::DW_CFA_nop);
+ section.FinishEntry();
+
+ PERHAPS_WRITE_DEBUG_FRAME_FILE("SingleCIE", section);
+
+ EXPECT_CALL(handler, Entry(_, _, _, _, _, _)).Times(0);
+ EXPECT_CALL(handler, End()).Times(0);
+
+ string contents;
+ EXPECT_TRUE(section.GetContents(&contents));
+ ByteReader reader(ENDIANNESS_LITTLE);
+ reader.SetAddressSize(4);
+ CallFrameInfo parser(contents.data(), contents.size(), &reader, &handler,
+ &reporter);
+ EXPECT_TRUE(parser.Start());
+}
+
+// One FDE, one CIE.
+TEST_F(LulDwarfCFI, OneFDE) {
+ CFISection section(kBigEndian, 4);
+ Label cie;
+ section.Mark(&cie)
+ .CIEHeader(0x4be22f75, 0x2492236e, 0x6b6efb87, 3, "")
+ .FinishEntry()
+ .FDEHeader(cie, 0x7714740d, 0x3d5a10cd)
+ .FinishEntry();
+
+ PERHAPS_WRITE_DEBUG_FRAME_FILE("OneFDE", section);
+
+ {
+ InSequence s;
+ EXPECT_CALL(handler, Entry(_, 0x7714740d, 0x3d5a10cd, 3, "", 0x6b6efb87))
+ .WillOnce(Return(true));
+ EXPECT_CALL(handler, End()).WillOnce(Return(true));
+ }
+
+ string contents;
+ EXPECT_TRUE(section.GetContents(&contents));
+ ByteReader reader(ENDIANNESS_BIG);
+ reader.SetAddressSize(4);
+ CallFrameInfo parser(contents.data(), contents.size(), &reader, &handler,
+ &reporter);
+ EXPECT_TRUE(parser.Start());
+}
+
+// Two FDEs share a CIE.
+TEST_F(LulDwarfCFI, TwoFDEsOneCIE) {
+ CFISection section(kBigEndian, 4);
+ Label cie;
+ section
+ // First FDE. readelf complains about this one because it makes
+ // a forward reference to its CIE.
+ .FDEHeader(cie, 0xa42744df, 0xa3b42121)
+ .FinishEntry()
+ // CIE.
+ .Mark(&cie)
+ .CIEHeader(0x04f7dc7b, 0x3d00c05f, 0xbd43cb59, 3, "")
+ .FinishEntry()
+ // Second FDE.
+ .FDEHeader(cie, 0x6057d391, 0x700f608d)
+ .FinishEntry();
+
+ PERHAPS_WRITE_DEBUG_FRAME_FILE("TwoFDEsOneCIE", section);
+
+ {
+ InSequence s;
+ EXPECT_CALL(handler, Entry(_, 0xa42744df, 0xa3b42121, 3, "", 0xbd43cb59))
+ .WillOnce(Return(true));
+ EXPECT_CALL(handler, End()).WillOnce(Return(true));
+ }
+ {
+ InSequence s;
+ EXPECT_CALL(handler, Entry(_, 0x6057d391, 0x700f608d, 3, "", 0xbd43cb59))
+ .WillOnce(Return(true));
+ EXPECT_CALL(handler, End()).WillOnce(Return(true));
+ }
+
+ string contents;
+ EXPECT_TRUE(section.GetContents(&contents));
+ ByteReader reader(ENDIANNESS_BIG);
+ reader.SetAddressSize(4);
+ CallFrameInfo parser(contents.data(), contents.size(), &reader, &handler,
+ &reporter);
+ EXPECT_TRUE(parser.Start());
+}
+
+// Two FDEs, two CIEs.
+TEST_F(LulDwarfCFI, TwoFDEsTwoCIEs) {
+ CFISection section(kLittleEndian, 8);
+ Label cie1, cie2;
+ section
+ // First CIE.
+ .Mark(&cie1)
+ .CIEHeader(0x694d5d45, 0x4233221b, 0xbf45e65a, 3, "")
+ .FinishEntry()
+ // First FDE which cites second CIE. readelf complains about
+ // this one because it makes a forward reference to its CIE.
+ .FDEHeader(cie2, 0x778b27dfe5871f05ULL, 0x324ace3448070926ULL)
+ .FinishEntry()
+ // Second FDE, which cites first CIE.
+ .FDEHeader(cie1, 0xf6054ca18b10bf5fULL, 0x45fdb970d8bca342ULL)
+ .FinishEntry()
+ // Second CIE.
+ .Mark(&cie2)
+ .CIEHeader(0xfba3fad7, 0x6287e1fd, 0x61d2c581, 2, "")
+ .FinishEntry();
+
+ PERHAPS_WRITE_DEBUG_FRAME_FILE("TwoFDEsTwoCIEs", section);
+
+ {
+ InSequence s;
+ EXPECT_CALL(handler, Entry(_, 0x778b27dfe5871f05ULL, 0x324ace3448070926ULL,
+ 2, "", 0x61d2c581))
+ .WillOnce(Return(true));
+ EXPECT_CALL(handler, End()).WillOnce(Return(true));
+ }
+ {
+ InSequence s;
+ EXPECT_CALL(handler, Entry(_, 0xf6054ca18b10bf5fULL, 0x45fdb970d8bca342ULL,
+ 3, "", 0xbf45e65a))
+ .WillOnce(Return(true));
+ EXPECT_CALL(handler, End()).WillOnce(Return(true));
+ }
+
+ string contents;
+ EXPECT_TRUE(section.GetContents(&contents));
+ ByteReader reader(ENDIANNESS_LITTLE);
+ reader.SetAddressSize(8);
+ CallFrameInfo parser(contents.data(), contents.size(), &reader, &handler,
+ &reporter);
+ EXPECT_TRUE(parser.Start());
+}
+
+// An FDE whose CIE specifies a version we don't recognize.
+TEST_F(LulDwarfCFI, BadVersion) {
+ CFISection section(kBigEndian, 4);
+ Label cie1, cie2;
+ section.Mark(&cie1)
+ .CIEHeader(0xca878cf0, 0x7698ec04, 0x7b616f54, 0x52, "")
+ .FinishEntry()
+ // We should skip this entry, as its CIE specifies a version we
+ // don't recognize.
+ .FDEHeader(cie1, 0x08852292, 0x2204004a)
+ .FinishEntry()
+ // Despite the above, we should visit this entry.
+ .Mark(&cie2)
+ .CIEHeader(0x7c3ae7c9, 0xb9b9a512, 0x96cb3264, 3, "")
+ .FinishEntry()
+ .FDEHeader(cie2, 0x2094735a, 0x6e875501)
+ .FinishEntry();
+
+ PERHAPS_WRITE_DEBUG_FRAME_FILE("BadVersion", section);
+
+ EXPECT_CALL(reporter, UnrecognizedVersion(_, 0x52)).WillOnce(Return());
+
+ {
+ InSequence s;
+ // We should see no mention of the first FDE, but we should get
+ // a call to Entry for the second.
+ EXPECT_CALL(handler, Entry(_, 0x2094735a, 0x6e875501, 3, "", 0x96cb3264))
+ .WillOnce(Return(true));
+ EXPECT_CALL(handler, End()).WillOnce(Return(true));
+ }
+
+ string contents;
+ EXPECT_TRUE(section.GetContents(&contents));
+ ByteReader reader(ENDIANNESS_BIG);
+ reader.SetAddressSize(4);
+ CallFrameInfo parser(contents.data(), contents.size(), &reader, &handler,
+ &reporter);
+ EXPECT_FALSE(parser.Start());
+}
+
+// An FDE whose CIE specifies an augmentation we don't recognize.
+TEST_F(LulDwarfCFI, BadAugmentation) {
+ CFISection section(kBigEndian, 4);
+ Label cie1, cie2;
+ section.Mark(&cie1)
+ .CIEHeader(0x4be22f75, 0x2492236e, 0x6b6efb87, 3, "spaniels!")
+ .FinishEntry()
+ // We should skip this entry, as its CIE specifies an
+ // augmentation we don't recognize.
+ .FDEHeader(cie1, 0x7714740d, 0x3d5a10cd)
+ .FinishEntry()
+ // Despite the above, we should visit this entry.
+ .Mark(&cie2)
+ .CIEHeader(0xf8bc4399, 0x8cf09931, 0xf2f519b2, 3, "")
+ .FinishEntry()
+ .FDEHeader(cie2, 0x7bf0fda0, 0xcbcd28d8)
+ .FinishEntry();
+
+ PERHAPS_WRITE_DEBUG_FRAME_FILE("BadAugmentation", section);
+
+ EXPECT_CALL(reporter, UnrecognizedAugmentation(_, "spaniels!"))
+ .WillOnce(Return());
+
+ {
+ InSequence s;
+ // We should see no mention of the first FDE, but we should get
+ // a call to Entry for the second.
+ EXPECT_CALL(handler, Entry(_, 0x7bf0fda0, 0xcbcd28d8, 3, "", 0xf2f519b2))
+ .WillOnce(Return(true));
+ EXPECT_CALL(handler, End()).WillOnce(Return(true));
+ }
+
+ string contents;
+ EXPECT_TRUE(section.GetContents(&contents));
+ ByteReader reader(ENDIANNESS_BIG);
+ reader.SetAddressSize(4);
+ CallFrameInfo parser(contents.data(), contents.size(), &reader, &handler,
+ &reporter);
+ EXPECT_FALSE(parser.Start());
+}
+
+// The return address column field is a byte in CFI version 1
+// (DWARF2), but a ULEB128 value in version 3 (DWARF3).
+TEST_F(LulDwarfCFI, CIEVersion1ReturnColumn) {
+ CFISection section(kBigEndian, 4);
+ Label cie;
+ section
+ // CIE, using the version 1 format: return column is a ubyte.
+ .Mark(&cie)
+ // Use a value for the return column that is parsed differently
+ // as a ubyte and as a ULEB128.
+ .CIEHeader(0xbcdea24f, 0x5be28286, 0x9f, 1, "")
+ .FinishEntry()
+ // FDE, citing that CIE.
+ .FDEHeader(cie, 0xb8d347b5, 0x825e55dc)
+ .FinishEntry();
+
+ PERHAPS_WRITE_DEBUG_FRAME_FILE("CIEVersion1ReturnColumn", section);
+
+ {
+ InSequence s;
+ EXPECT_CALL(handler, Entry(_, 0xb8d347b5, 0x825e55dc, 1, "", 0x9f))
+ .WillOnce(Return(true));
+ EXPECT_CALL(handler, End()).WillOnce(Return(true));
+ }
+
+ string contents;
+ EXPECT_TRUE(section.GetContents(&contents));
+ ByteReader reader(ENDIANNESS_BIG);
+ reader.SetAddressSize(4);
+ CallFrameInfo parser(contents.data(), contents.size(), &reader, &handler,
+ &reporter);
+ EXPECT_TRUE(parser.Start());
+}
+
+// The return address column field is a byte in CFI version 1
+// (DWARF2), but a ULEB128 value in version 3 (DWARF3).
+TEST_F(LulDwarfCFI, CIEVersion3ReturnColumn) {
+ CFISection section(kBigEndian, 4);
+ Label cie;
+ section
+ // CIE, using the version 3 format: return column is a ULEB128.
+ .Mark(&cie)
+ // Use a value for the return column that is parsed differently
+ // as a ubyte and as a ULEB128.
+ .CIEHeader(0x0ab4758d, 0xc010fdf7, 0x89, 3, "")
+ .FinishEntry()
+ // FDE, citing that CIE.
+ .FDEHeader(cie, 0x86763f2b, 0x2a66dc23)
+ .FinishEntry();
+
+ PERHAPS_WRITE_DEBUG_FRAME_FILE("CIEVersion3ReturnColumn", section);
+
+ {
+ InSequence s;
+ EXPECT_CALL(handler, Entry(_, 0x86763f2b, 0x2a66dc23, 3, "", 0x89))
+ .WillOnce(Return(true));
+ EXPECT_CALL(handler, End()).WillOnce(Return(true));
+ }
+
+ string contents;
+ EXPECT_TRUE(section.GetContents(&contents));
+ ByteReader reader(ENDIANNESS_BIG);
+ reader.SetAddressSize(4);
+ CallFrameInfo parser(contents.data(), contents.size(), &reader, &handler,
+ &reporter);
+ EXPECT_TRUE(parser.Start());
+}
+
+struct CFIInsnFixture : public CFIFixture {
+ CFIInsnFixture() : CFIFixture() {
+ data_factor = 0xb6f;
+ return_register = 0x9be1ed9f;
+ version = 3;
+ cfa_base_register = 0x383a3aa;
+ cfa_offset = 0xf748;
+ }
+
+ // Prepare SECTION to receive FDE instructions.
+ //
+ // - Append a stock CIE header that establishes the fixture's
+ // code_factor, data_factor, return_register, version, and
+ // augmentation values.
+ // - Have the CIE set up a CFA rule using cfa_base_register and
+ // cfa_offset.
+ // - Append a stock FDE header, referring to the above CIE, for the
+ // fde_size bytes at fde_start. Choose fde_start and fde_size
+ // appropriately for the section's address size.
+ // - Set appropriate expectations on handler in sequence s for the
+ // frame description entry and the CIE's CFA rule.
+ //
+ // On return, SECTION is ready to have FDE instructions appended to
+ // it, and its FinishEntry member called.
+ void StockCIEAndFDE(CFISection* section) {
+ // Choose appropriate constants for our address size.
+ if (section->AddressSize() == 4) {
+ fde_start = 0xc628ecfbU;
+ fde_size = 0x5dee04a2;
+ code_factor = 0x60b;
+ } else {
+ assert(section->AddressSize() == 8);
+ fde_start = 0x0005c57ce7806bd3ULL;
+ fde_size = 0x2699521b5e333100ULL;
+ code_factor = 0x01008e32855274a8ULL;
+ }
+
+ // Create the CIE.
+ (*section)
+ .Mark(&cie_label)
+ .CIEHeader(code_factor, data_factor, return_register, version, "")
+ .D8(lul::DW_CFA_def_cfa)
+ .ULEB128(cfa_base_register)
+ .ULEB128(cfa_offset)
+ .FinishEntry();
+
+ // Create the FDE.
+ section->FDEHeader(cie_label, fde_start, fde_size);
+
+ // Expect an Entry call for the FDE and a ValOffsetRule call for the
+ // CIE's CFA rule.
+ EXPECT_CALL(handler,
+ Entry(_, fde_start, fde_size, version, "", return_register))
+ .InSequence(s)
+ .WillOnce(Return(true));
+ EXPECT_CALL(handler, ValOffsetRule(fde_start, kCFARegister,
+ cfa_base_register, cfa_offset))
+ .InSequence(s)
+ .WillOnce(Return(true));
+ }
+
+ // Run the contents of SECTION through a CallFrameInfo parser,
+ // expecting parser.Start to return SUCCEEDS. Caller may optionally
+ // supply, via READER, its own ByteReader. If that's absent, a
+ // local one is used.
+ void ParseSection(CFISection* section, bool succeeds = true,
+ ByteReader* reader = nullptr) {
+ string contents;
+ EXPECT_TRUE(section->GetContents(&contents));
+ lul::Endianness endianness;
+ if (section->endianness() == kBigEndian)
+ endianness = ENDIANNESS_BIG;
+ else {
+ assert(section->endianness() == kLittleEndian);
+ endianness = ENDIANNESS_LITTLE;
+ }
+ ByteReader local_reader(endianness);
+ ByteReader* reader_to_use = reader ? reader : &local_reader;
+ reader_to_use->SetAddressSize(section->AddressSize());
+ CallFrameInfo parser(contents.data(), contents.size(), reader_to_use,
+ &handler, &reporter);
+ if (succeeds)
+ EXPECT_TRUE(parser.Start());
+ else
+ EXPECT_FALSE(parser.Start());
+ }
+
+ Label cie_label;
+ Sequence s;
+ uint64 code_factor;
+ int data_factor;
+ unsigned return_register;
+ unsigned version;
+ unsigned cfa_base_register;
+ int cfa_offset;
+ uint64 fde_start, fde_size;
+};
+
+class LulDwarfCFIInsn : public CFIInsnFixture, public Test {};
+
+TEST_F(LulDwarfCFIInsn, DW_CFA_set_loc) {
+ CFISection section(kBigEndian, 4);
+ StockCIEAndFDE(&section);
+ section.D8(lul::DW_CFA_set_loc)
+ .D32(0xb1ee3e7a)
+ // Use DW_CFA_def_cfa to force a handler call that we can use to
+ // check the effect of the DW_CFA_set_loc.
+ .D8(lul::DW_CFA_def_cfa)
+ .ULEB128(0x4defb431)
+ .ULEB128(0x6d17b0ee)
+ .FinishEntry();
+
+ PERHAPS_WRITE_DEBUG_FRAME_FILE("DW_CFA_set_loc", section);
+
+ EXPECT_CALL(handler,
+ ValOffsetRule(0xb1ee3e7a, kCFARegister, 0x4defb431, 0x6d17b0ee))
+ .InSequence(s)
+ .WillOnce(Return(true));
+ EXPECT_CALL(handler, End()).InSequence(s).WillOnce(Return(true));
+
+ ParseSection(&section);
+}
+
+TEST_F(LulDwarfCFIInsn, DW_CFA_advance_loc) {
+ CFISection section(kBigEndian, 8);
+ StockCIEAndFDE(&section);
+ section
+ .D8(lul::DW_CFA_advance_loc | 0x2a)
+ // Use DW_CFA_def_cfa to force a handler call that we can use to
+ // check the effect of the DW_CFA_advance_loc.
+ .D8(lul::DW_CFA_def_cfa)
+ .ULEB128(0x5bbb3715)
+ .ULEB128(0x0186c7bf)
+ .FinishEntry();
+
+ PERHAPS_WRITE_DEBUG_FRAME_FILE("DW_CFA_advance_loc", section);
+
+ EXPECT_CALL(handler, ValOffsetRule(fde_start + 0x2a * code_factor,
+ kCFARegister, 0x5bbb3715, 0x0186c7bf))
+ .InSequence(s)
+ .WillOnce(Return(true));
+ EXPECT_CALL(handler, End()).InSequence(s).WillOnce(Return(true));
+
+ ParseSection(&section);
+}
+
+TEST_F(LulDwarfCFIInsn, DW_CFA_advance_loc1) {
+ CFISection section(kLittleEndian, 8);
+ StockCIEAndFDE(&section);
+ section.D8(lul::DW_CFA_advance_loc1)
+ .D8(0xd8)
+ .D8(lul::DW_CFA_def_cfa)
+ .ULEB128(0x69d5696a)
+ .ULEB128(0x1eb7fc93)
+ .FinishEntry();
+
+ PERHAPS_WRITE_DEBUG_FRAME_FILE("DW_CFA_advance_loc1", section);
+
+ EXPECT_CALL(handler, ValOffsetRule((fde_start + 0xd8 * code_factor),
+ kCFARegister, 0x69d5696a, 0x1eb7fc93))
+ .InSequence(s)
+ .WillOnce(Return(true));
+ EXPECT_CALL(handler, End()).InSequence(s).WillOnce(Return(true));
+
+ ParseSection(&section);
+}
+
+TEST_F(LulDwarfCFIInsn, DW_CFA_advance_loc2) {
+ CFISection section(kLittleEndian, 4);
+ StockCIEAndFDE(&section);
+ section.D8(lul::DW_CFA_advance_loc2)
+ .D16(0x3adb)
+ .D8(lul::DW_CFA_def_cfa)
+ .ULEB128(0x3a368bed)
+ .ULEB128(0x3194ee37)
+ .FinishEntry();
+
+ PERHAPS_WRITE_DEBUG_FRAME_FILE("DW_CFA_advance_loc2", section);
+
+ EXPECT_CALL(handler, ValOffsetRule((fde_start + 0x3adb * code_factor),
+ kCFARegister, 0x3a368bed, 0x3194ee37))
+ .InSequence(s)
+ .WillOnce(Return(true));
+ EXPECT_CALL(handler, End()).InSequence(s).WillOnce(Return(true));
+
+ ParseSection(&section);
+}
+
+TEST_F(LulDwarfCFIInsn, DW_CFA_advance_loc4) {
+ CFISection section(kBigEndian, 8);
+ StockCIEAndFDE(&section);
+ section.D8(lul::DW_CFA_advance_loc4)
+ .D32(0x15813c88)
+ .D8(lul::DW_CFA_def_cfa)
+ .ULEB128(0x135270c5)
+ .ULEB128(0x24bad7cb)
+ .FinishEntry();
+
+ PERHAPS_WRITE_DEBUG_FRAME_FILE("DW_CFA_advance_loc4", section);
+
+ EXPECT_CALL(handler, ValOffsetRule((fde_start + 0x15813c88ULL * code_factor),
+ kCFARegister, 0x135270c5, 0x24bad7cb))
+ .InSequence(s)
+ .WillOnce(Return(true));
+ EXPECT_CALL(handler, End()).InSequence(s).WillOnce(Return(true));
+
+ ParseSection(&section);
+}
+
+TEST_F(LulDwarfCFIInsn, DW_CFA_MIPS_advance_loc8) {
+ code_factor = 0x2d;
+ CFISection section(kBigEndian, 8);
+ StockCIEAndFDE(&section);
+ section.D8(lul::DW_CFA_MIPS_advance_loc8)
+ .D64(0x3c4f3945b92c14ULL)
+ .D8(lul::DW_CFA_def_cfa)
+ .ULEB128(0xe17ed602)
+ .ULEB128(0x3d162e7f)
+ .FinishEntry();
+
+ PERHAPS_WRITE_DEBUG_FRAME_FILE("DW_CFA_advance_loc8", section);
+
+ EXPECT_CALL(handler,
+ ValOffsetRule((fde_start + 0x3c4f3945b92c14ULL * code_factor),
+ kCFARegister, 0xe17ed602, 0x3d162e7f))
+ .InSequence(s)
+ .WillOnce(Return(true));
+ EXPECT_CALL(handler, End()).InSequence(s).WillOnce(Return(true));
+
+ ParseSection(&section);
+}
+
+TEST_F(LulDwarfCFIInsn, DW_CFA_def_cfa) {
+ CFISection section(kLittleEndian, 4);
+ StockCIEAndFDE(&section);
+ section.D8(lul::DW_CFA_def_cfa)
+ .ULEB128(0x4e363a85)
+ .ULEB128(0x815f9aa7)
+ .FinishEntry();
+
+ PERHAPS_WRITE_DEBUG_FRAME_FILE("DW_CFA_def_cfa", section);
+
+ EXPECT_CALL(handler,
+ ValOffsetRule(fde_start, kCFARegister, 0x4e363a85, 0x815f9aa7))
+ .InSequence(s)
+ .WillOnce(Return(true));
+ EXPECT_CALL(handler, End()).InSequence(s).WillOnce(Return(true));
+
+ ParseSection(&section);
+}
+
+TEST_F(LulDwarfCFIInsn, DW_CFA_def_cfa_sf) {
+ CFISection section(kBigEndian, 4);
+ StockCIEAndFDE(&section);
+ section.D8(lul::DW_CFA_def_cfa_sf)
+ .ULEB128(0x8ccb32b7)
+ .LEB128(0x9ea)
+ .D8(lul::DW_CFA_def_cfa_sf)
+ .ULEB128(0x9b40f5da)
+ .LEB128(-0x40a2)
+ .FinishEntry();
+
+ EXPECT_CALL(handler, ValOffsetRule(fde_start, kCFARegister, 0x8ccb32b7,
+ 0x9ea * data_factor))
+ .InSequence(s)
+ .WillOnce(Return(true));
+ EXPECT_CALL(handler, ValOffsetRule(fde_start, kCFARegister, 0x9b40f5da,
+ -0x40a2 * data_factor))
+ .InSequence(s)
+ .WillOnce(Return(true));
+ EXPECT_CALL(handler, End()).InSequence(s).WillOnce(Return(true));
+
+ ParseSection(&section);
+}
+
+TEST_F(LulDwarfCFIInsn, DW_CFA_def_cfa_register) {
+ CFISection section(kLittleEndian, 8);
+ StockCIEAndFDE(&section);
+ section.D8(lul::DW_CFA_def_cfa_register).ULEB128(0x3e7e9363).FinishEntry();
+
+ EXPECT_CALL(handler,
+ ValOffsetRule(fde_start, kCFARegister, 0x3e7e9363, cfa_offset))
+ .InSequence(s)
+ .WillOnce(Return(true));
+ EXPECT_CALL(handler, End()).InSequence(s).WillOnce(Return(true));
+
+ ParseSection(&section);
+}
+
+// DW_CFA_def_cfa_register should have no effect when applied to a
+// non-base/offset rule.
+TEST_F(LulDwarfCFIInsn, DW_CFA_def_cfa_registerBadRule) {
+ ByteReader reader(ENDIANNESS_BIG);
+ CFISection section(kBigEndian, 4);
+ ImageSlice expr("needle in a haystack");
+ StockCIEAndFDE(&section);
+ section.D8(lul::DW_CFA_def_cfa_expression)
+ .Block(expr)
+ .D8(lul::DW_CFA_def_cfa_register)
+ .ULEB128(0xf1b49e49)
+ .FinishEntry();
+
+ EXPECT_CALL(handler, ValExpressionRule(fde_start, kCFARegister, expr))
+ .WillRepeatedly(Return(true));
+ EXPECT_CALL(handler, End()).InSequence(s).WillOnce(Return(true));
+
+ ParseSection(&section, true, &reader);
+}
+
+TEST_F(LulDwarfCFIInsn, DW_CFA_def_cfa_offset) {
+ CFISection section(kBigEndian, 4);
+ StockCIEAndFDE(&section);
+ section.D8(lul::DW_CFA_def_cfa_offset).ULEB128(0x1e8e3b9b).FinishEntry();
+
+ EXPECT_CALL(handler, ValOffsetRule(fde_start, kCFARegister, cfa_base_register,
+ 0x1e8e3b9b))
+ .InSequence(s)
+ .WillOnce(Return(true));
+ EXPECT_CALL(handler, End()).InSequence(s).WillOnce(Return(true));
+
+ ParseSection(&section);
+}
+
+TEST_F(LulDwarfCFIInsn, DW_CFA_def_cfa_offset_sf) {
+ CFISection section(kLittleEndian, 4);
+ StockCIEAndFDE(&section);
+ section.D8(lul::DW_CFA_def_cfa_offset_sf)
+ .LEB128(0x970)
+ .D8(lul::DW_CFA_def_cfa_offset_sf)
+ .LEB128(-0x2cd)
+ .FinishEntry();
+
+ EXPECT_CALL(handler, ValOffsetRule(fde_start, kCFARegister, cfa_base_register,
+ 0x970 * data_factor))
+ .InSequence(s)
+ .WillOnce(Return(true));
+ EXPECT_CALL(handler, ValOffsetRule(fde_start, kCFARegister, cfa_base_register,
+ -0x2cd * data_factor))
+ .InSequence(s)
+ .WillOnce(Return(true));
+ EXPECT_CALL(handler, End()).InSequence(s).WillOnce(Return(true));
+
+ ParseSection(&section);
+}
+
+// DW_CFA_def_cfa_offset should have no effect when applied to a
+// non-base/offset rule.
+TEST_F(LulDwarfCFIInsn, DW_CFA_def_cfa_offsetBadRule) {
+ ByteReader reader(ENDIANNESS_BIG);
+ CFISection section(kBigEndian, 4);
+ StockCIEAndFDE(&section);
+ ImageSlice expr("six ways to Sunday");
+ section.D8(lul::DW_CFA_def_cfa_expression)
+ .Block(expr)
+ .D8(lul::DW_CFA_def_cfa_offset)
+ .ULEB128(0x1e8e3b9b)
+ .FinishEntry();
+
+ EXPECT_CALL(handler, ValExpressionRule(fde_start, kCFARegister, expr))
+ .WillRepeatedly(Return(true));
+ EXPECT_CALL(handler, End()).InSequence(s).WillOnce(Return(true));
+
+ ParseSection(&section, true, &reader);
+}
+
+TEST_F(LulDwarfCFIInsn, DW_CFA_def_cfa_expression) {
+ ByteReader reader(ENDIANNESS_LITTLE);
+ CFISection section(kLittleEndian, 8);
+ ImageSlice expr("eating crow");
+ StockCIEAndFDE(&section);
+ section.D8(lul::DW_CFA_def_cfa_expression).Block(expr).FinishEntry();
+
+ EXPECT_CALL(handler, ValExpressionRule(fde_start, kCFARegister, expr))
+ .InSequence(s)
+ .WillOnce(Return(true));
+ EXPECT_CALL(handler, End()).InSequence(s).WillOnce(Return(true));
+
+ ParseSection(&section, true, &reader);
+}
+
+TEST_F(LulDwarfCFIInsn, DW_CFA_undefined) {
+ CFISection section(kLittleEndian, 4);
+ StockCIEAndFDE(&section);
+ section.D8(lul::DW_CFA_undefined).ULEB128(0x300ce45d).FinishEntry();
+
+ EXPECT_CALL(handler, UndefinedRule(fde_start, 0x300ce45d))
+ .InSequence(s)
+ .WillOnce(Return(true));
+ EXPECT_CALL(handler, End()).InSequence(s).WillOnce(Return(true));
+
+ ParseSection(&section);
+}
+
+TEST_F(LulDwarfCFIInsn, DW_CFA_same_value) {
+ CFISection section(kLittleEndian, 4);
+ StockCIEAndFDE(&section);
+ section.D8(lul::DW_CFA_same_value).ULEB128(0x3865a760).FinishEntry();
+
+ EXPECT_CALL(handler, SameValueRule(fde_start, 0x3865a760))
+ .InSequence(s)
+ .WillOnce(Return(true));
+ EXPECT_CALL(handler, End()).InSequence(s).WillOnce(Return(true));
+
+ ParseSection(&section);
+}
+
+TEST_F(LulDwarfCFIInsn, DW_CFA_offset) {
+ CFISection section(kBigEndian, 4);
+ StockCIEAndFDE(&section);
+ section.D8(lul::DW_CFA_offset | 0x2c).ULEB128(0x9f6).FinishEntry();
+
+ EXPECT_CALL(handler,
+ OffsetRule(fde_start, 0x2c, kCFARegister, 0x9f6 * data_factor))
+ .InSequence(s)
+ .WillOnce(Return(true));
+ EXPECT_CALL(handler, End()).InSequence(s).WillOnce(Return(true));
+
+ ParseSection(&section);
+}
+
+TEST_F(LulDwarfCFIInsn, DW_CFA_offset_extended) {
+ CFISection section(kBigEndian, 4);
+ StockCIEAndFDE(&section);
+ section.D8(lul::DW_CFA_offset_extended)
+ .ULEB128(0x402b)
+ .ULEB128(0xb48)
+ .FinishEntry();
+
+ EXPECT_CALL(handler,
+ OffsetRule(fde_start, 0x402b, kCFARegister, 0xb48 * data_factor))
+ .InSequence(s)
+ .WillOnce(Return(true));
+ EXPECT_CALL(handler, End()).InSequence(s).WillOnce(Return(true));
+
+ ParseSection(&section);
+}
+
+TEST_F(LulDwarfCFIInsn, DW_CFA_offset_extended_sf) {
+ CFISection section(kBigEndian, 8);
+ StockCIEAndFDE(&section);
+ section.D8(lul::DW_CFA_offset_extended_sf)
+ .ULEB128(0x997c23ee)
+ .LEB128(0x2d00)
+ .D8(lul::DW_CFA_offset_extended_sf)
+ .ULEB128(0x9519eb82)
+ .LEB128(-0xa77)
+ .FinishEntry();
+
+ EXPECT_CALL(handler, OffsetRule(fde_start, 0x997c23ee, kCFARegister,
+ 0x2d00 * data_factor))
+ .InSequence(s)
+ .WillOnce(Return(true));
+ EXPECT_CALL(handler, OffsetRule(fde_start, 0x9519eb82, kCFARegister,
+ -0xa77 * data_factor))
+ .InSequence(s)
+ .WillOnce(Return(true));
+ EXPECT_CALL(handler, End()).InSequence(s).WillOnce(Return(true));
+
+ ParseSection(&section);
+}
+
+TEST_F(LulDwarfCFIInsn, DW_CFA_val_offset) {
+ CFISection section(kBigEndian, 4);
+ StockCIEAndFDE(&section);
+ section.D8(lul::DW_CFA_val_offset)
+ .ULEB128(0x623562fe)
+ .ULEB128(0x673)
+ .FinishEntry();
+
+ EXPECT_CALL(handler, ValOffsetRule(fde_start, 0x623562fe, kCFARegister,
+ 0x673 * data_factor))
+ .InSequence(s)
+ .WillOnce(Return(true));
+ EXPECT_CALL(handler, End()).InSequence(s).WillOnce(Return(true));
+
+ ParseSection(&section);
+}
+
+TEST_F(LulDwarfCFIInsn, DW_CFA_val_offset_sf) {
+ CFISection section(kBigEndian, 4);
+ StockCIEAndFDE(&section);
+ section.D8(lul::DW_CFA_val_offset_sf)
+ .ULEB128(0x6f4f)
+ .LEB128(0xaab)
+ .D8(lul::DW_CFA_val_offset_sf)
+ .ULEB128(0x2483)
+ .LEB128(-0x8a2)
+ .FinishEntry();
+
+ EXPECT_CALL(handler, ValOffsetRule(fde_start, 0x6f4f, kCFARegister,
+ 0xaab * data_factor))
+ .InSequence(s)
+ .WillOnce(Return(true));
+ EXPECT_CALL(handler, ValOffsetRule(fde_start, 0x2483, kCFARegister,
+ -0x8a2 * data_factor))
+ .InSequence(s)
+ .WillOnce(Return(true));
+ EXPECT_CALL(handler, End()).InSequence(s).WillOnce(Return(true));
+
+ ParseSection(&section);
+}
+
+TEST_F(LulDwarfCFIInsn, DW_CFA_register) {
+ CFISection section(kLittleEndian, 8);
+ StockCIEAndFDE(&section);
+ section.D8(lul::DW_CFA_register)
+ .ULEB128(0x278d18f9)
+ .ULEB128(0x1a684414)
+ .FinishEntry();
+
+ EXPECT_CALL(handler, RegisterRule(fde_start, 0x278d18f9, 0x1a684414))
+ .InSequence(s)
+ .WillOnce(Return(true));
+ EXPECT_CALL(handler, End()).InSequence(s).WillOnce(Return(true));
+
+ ParseSection(&section);
+}
+
+TEST_F(LulDwarfCFIInsn, DW_CFA_expression) {
+ ByteReader reader(ENDIANNESS_BIG);
+ CFISection section(kBigEndian, 8);
+ StockCIEAndFDE(&section);
+ ImageSlice expr("plus ça change, plus c'est la même chose");
+ section.D8(lul::DW_CFA_expression)
+ .ULEB128(0xa1619fb2)
+ .Block(expr)
+ .FinishEntry();
+
+ EXPECT_CALL(handler, ExpressionRule(fde_start, 0xa1619fb2, expr))
+ .InSequence(s)
+ .WillOnce(Return(true));
+ EXPECT_CALL(handler, End()).InSequence(s).WillOnce(Return(true));
+
+ ParseSection(&section, true, &reader);
+}
+
+TEST_F(LulDwarfCFIInsn, DW_CFA_val_expression) {
+ ByteReader reader(ENDIANNESS_BIG);
+ CFISection section(kBigEndian, 4);
+ ImageSlice expr("he who has the gold makes the rules");
+ StockCIEAndFDE(&section);
+ section.D8(lul::DW_CFA_val_expression)
+ .ULEB128(0xc5e4a9e3)
+ .Block(expr)
+ .FinishEntry();
+
+ EXPECT_CALL(handler, ValExpressionRule(fde_start, 0xc5e4a9e3, expr))
+ .InSequence(s)
+ .WillOnce(Return(true));
+ EXPECT_CALL(handler, End()).InSequence(s).WillOnce(Return(true));
+
+ ParseSection(&section, true, &reader);
+}
+
+TEST_F(LulDwarfCFIInsn, DW_CFA_restore) {
+ CFISection section(kLittleEndian, 8);
+ code_factor = 0x01bd188a9b1fa083ULL;
+ data_factor = -0x1ac8;
+ return_register = 0x8c35b049;
+ version = 2;
+ fde_start = 0x2d70fe998298bbb1ULL;
+ fde_size = 0x46ccc2e63cf0b108ULL;
+ Label cie;
+ section.Mark(&cie)
+ .CIEHeader(code_factor, data_factor, return_register, version, "")
+ // Provide a CFA rule, because register rules require them.
+ .D8(lul::DW_CFA_def_cfa)
+ .ULEB128(0x6ca1d50e)
+ .ULEB128(0x372e38e8)
+ // Provide an offset(N) rule for register 0x3c.
+ .D8(lul::DW_CFA_offset | 0x3c)
+ .ULEB128(0xb348)
+ .FinishEntry()
+ // In the FDE...
+ .FDEHeader(cie, fde_start, fde_size)
+ // At a second address, provide a new offset(N) rule for register 0x3c.
+ .D8(lul::DW_CFA_advance_loc | 0x13)
+ .D8(lul::DW_CFA_offset | 0x3c)
+ .ULEB128(0x9a50)
+ // At a third address, restore the original rule for register 0x3c.
+ .D8(lul::DW_CFA_advance_loc | 0x01)
+ .D8(lul::DW_CFA_restore | 0x3c)
+ .FinishEntry();
+
+ {
+ InSequence s;
+ EXPECT_CALL(handler,
+ Entry(_, fde_start, fde_size, version, "", return_register))
+ .WillOnce(Return(true));
+ // CIE's CFA rule.
+ EXPECT_CALL(handler,
+ ValOffsetRule(fde_start, kCFARegister, 0x6ca1d50e, 0x372e38e8))
+ .WillOnce(Return(true));
+ // CIE's rule for register 0x3c.
+ EXPECT_CALL(handler,
+ OffsetRule(fde_start, 0x3c, kCFARegister, 0xb348 * data_factor))
+ .WillOnce(Return(true));
+ // FDE's rule for register 0x3c.
+ EXPECT_CALL(handler, OffsetRule(fde_start + 0x13 * code_factor, 0x3c,
+ kCFARegister, 0x9a50 * data_factor))
+ .WillOnce(Return(true));
+ // Restore CIE's rule for register 0x3c.
+ EXPECT_CALL(handler, OffsetRule(fde_start + (0x13 + 0x01) * code_factor,
+ 0x3c, kCFARegister, 0xb348 * data_factor))
+ .WillOnce(Return(true));
+ EXPECT_CALL(handler, End()).WillOnce(Return(true));
+ }
+
+ ParseSection(&section);
+}
+
+TEST_F(LulDwarfCFIInsn, DW_CFA_restoreNoRule) {
+ CFISection section(kBigEndian, 4);
+ code_factor = 0x005f78143c1c3b82ULL;
+ data_factor = 0x25d0;
+ return_register = 0xe8;
+ version = 1;
+ fde_start = 0x4062e30f;
+ fde_size = 0x5302a389;
+ Label cie;
+ section.Mark(&cie)
+ .CIEHeader(code_factor, data_factor, return_register, version, "")
+ // Provide a CFA rule, because register rules require them.
+ .D8(lul::DW_CFA_def_cfa)
+ .ULEB128(0x470aa334)
+ .ULEB128(0x099ef127)
+ .FinishEntry()
+ // In the FDE...
+ .FDEHeader(cie, fde_start, fde_size)
+ // At a second address, provide an offset(N) rule for register 0x2c.
+ .D8(lul::DW_CFA_advance_loc | 0x7)
+ .D8(lul::DW_CFA_offset | 0x2c)
+ .ULEB128(0x1f47)
+ // At a third address, restore the (missing) CIE rule for register 0x2c.
+ .D8(lul::DW_CFA_advance_loc | 0xb)
+ .D8(lul::DW_CFA_restore | 0x2c)
+ .FinishEntry();
+
+ {
+ InSequence s;
+ EXPECT_CALL(handler,
+ Entry(_, fde_start, fde_size, version, "", return_register))
+ .WillOnce(Return(true));
+ // CIE's CFA rule.
+ EXPECT_CALL(handler,
+ ValOffsetRule(fde_start, kCFARegister, 0x470aa334, 0x099ef127))
+ .WillOnce(Return(true));
+ // FDE's rule for register 0x2c.
+ EXPECT_CALL(handler, OffsetRule(fde_start + 0x7 * code_factor, 0x2c,
+ kCFARegister, 0x1f47 * data_factor))
+ .WillOnce(Return(true));
+ // Restore CIE's (missing) rule for register 0x2c.
+ EXPECT_CALL(handler,
+ SameValueRule(fde_start + (0x7 + 0xb) * code_factor, 0x2c))
+ .WillOnce(Return(true));
+ EXPECT_CALL(handler, End()).WillOnce(Return(true));
+ }
+
+ ParseSection(&section);
+}
+
+TEST_F(LulDwarfCFIInsn, DW_CFA_restore_extended) {
+ CFISection section(kBigEndian, 4);
+ code_factor = 0x126e;
+ data_factor = -0xd8b;
+ return_register = 0x77711787;
+ version = 3;
+ fde_start = 0x01f55a45;
+ fde_size = 0x452adb80;
+ Label cie;
+ section.Mark(&cie)
+ .CIEHeader(code_factor, data_factor, return_register, version, "",
+ true /* dwarf64 */)
+ // Provide a CFA rule, because register rules require them.
+ .D8(lul::DW_CFA_def_cfa)
+ .ULEB128(0x56fa0edd)
+ .ULEB128(0x097f78a5)
+ // Provide an offset(N) rule for register 0x0f9b8a1c.
+ .D8(lul::DW_CFA_offset_extended)
+ .ULEB128(0x0f9b8a1c)
+ .ULEB128(0xc979)
+ .FinishEntry()
+ // In the FDE...
+ .FDEHeader(cie, fde_start, fde_size)
+ // At a second address, provide a new offset(N) rule for reg 0x0f9b8a1c.
+ .D8(lul::DW_CFA_advance_loc | 0x3)
+ .D8(lul::DW_CFA_offset_extended)
+ .ULEB128(0x0f9b8a1c)
+ .ULEB128(0x3b7b)
+ // At a third address, restore the original rule for register 0x0f9b8a1c.
+ .D8(lul::DW_CFA_advance_loc | 0x04)
+ .D8(lul::DW_CFA_restore_extended)
+ .ULEB128(0x0f9b8a1c)
+ .FinishEntry();
+
+ {
+ InSequence s;
+ EXPECT_CALL(handler,
+ Entry(_, fde_start, fde_size, version, "", return_register))
+ .WillOnce(Return(true));
+ // CIE's CFA rule.
+ EXPECT_CALL(handler,
+ ValOffsetRule(fde_start, kCFARegister, 0x56fa0edd, 0x097f78a5))
+ .WillOnce(Return(true));
+ // CIE's rule for register 0x0f9b8a1c.
+ EXPECT_CALL(handler, OffsetRule(fde_start, 0x0f9b8a1c, kCFARegister,
+ 0xc979 * data_factor))
+ .WillOnce(Return(true));
+ // FDE's rule for register 0x0f9b8a1c.
+ EXPECT_CALL(handler, OffsetRule(fde_start + 0x3 * code_factor, 0x0f9b8a1c,
+ kCFARegister, 0x3b7b * data_factor))
+ .WillOnce(Return(true));
+ // Restore CIE's rule for register 0x0f9b8a1c.
+ EXPECT_CALL(handler,
+ OffsetRule(fde_start + (0x3 + 0x4) * code_factor, 0x0f9b8a1c,
+ kCFARegister, 0xc979 * data_factor))
+ .WillOnce(Return(true));
+ EXPECT_CALL(handler, End()).WillOnce(Return(true));
+ }
+
+ ParseSection(&section);
+}
+
+TEST_F(LulDwarfCFIInsn, DW_CFA_remember_and_restore_state) {
+ CFISection section(kLittleEndian, 8);
+ StockCIEAndFDE(&section);
+
+ // We create a state, save it, modify it, and then restore. We
+ // refer to the state that is overridden the restore as the
+ // "outgoing" state, and the restored state the "incoming" state.
+ //
+ // Register outgoing incoming expect
+ // 1 offset(N) no rule new "same value" rule
+ // 2 register(R) offset(N) report changed rule
+ // 3 offset(N) offset(M) report changed offset
+ // 4 offset(N) offset(N) no report
+ // 5 offset(N) no rule new "same value" rule
+ section
+ // Create the "incoming" state, which we will save and later restore.
+ .D8(lul::DW_CFA_offset | 2)
+ .ULEB128(0x9806)
+ .D8(lul::DW_CFA_offset | 3)
+ .ULEB128(0x995d)
+ .D8(lul::DW_CFA_offset | 4)
+ .ULEB128(0x7055)
+ .D8(lul::DW_CFA_remember_state)
+ // Advance to a new instruction; an implementation could legitimately
+ // ignore all but the final rule for a given register at a given address.
+ .D8(lul::DW_CFA_advance_loc | 1)
+ // Create the "outgoing" state, which we will discard.
+ .D8(lul::DW_CFA_offset | 1)
+ .ULEB128(0xea1a)
+ .D8(lul::DW_CFA_register)
+ .ULEB128(2)
+ .ULEB128(0x1d2a3767)
+ .D8(lul::DW_CFA_offset | 3)
+ .ULEB128(0xdd29)
+ .D8(lul::DW_CFA_offset | 5)
+ .ULEB128(0xf1ce)
+ // At a third address, restore the incoming state.
+ .D8(lul::DW_CFA_advance_loc | 1)
+ .D8(lul::DW_CFA_restore_state)
+ .FinishEntry();
+
+ uint64 addr = fde_start;
+
+ // Expect the incoming rules to be reported.
+ EXPECT_CALL(handler, OffsetRule(addr, 2, kCFARegister, 0x9806 * data_factor))
+ .InSequence(s)
+ .WillOnce(Return(true));
+ EXPECT_CALL(handler, OffsetRule(addr, 3, kCFARegister, 0x995d * data_factor))
+ .InSequence(s)
+ .WillOnce(Return(true));
+ EXPECT_CALL(handler, OffsetRule(addr, 4, kCFARegister, 0x7055 * data_factor))
+ .InSequence(s)
+ .WillOnce(Return(true));
+
+ addr += code_factor;
+
+ // After the save, we establish the outgoing rule set.
+ EXPECT_CALL(handler, OffsetRule(addr, 1, kCFARegister, 0xea1a * data_factor))
+ .InSequence(s)
+ .WillOnce(Return(true));
+ EXPECT_CALL(handler, RegisterRule(addr, 2, 0x1d2a3767))
+ .InSequence(s)
+ .WillOnce(Return(true));
+ EXPECT_CALL(handler, OffsetRule(addr, 3, kCFARegister, 0xdd29 * data_factor))
+ .InSequence(s)
+ .WillOnce(Return(true));
+ EXPECT_CALL(handler, OffsetRule(addr, 5, kCFARegister, 0xf1ce * data_factor))
+ .InSequence(s)
+ .WillOnce(Return(true));
+
+ addr += code_factor;
+
+ // Finally, after the restore, expect to see the differences from
+ // the outgoing to the incoming rules reported.
+ EXPECT_CALL(handler, SameValueRule(addr, 1))
+ .InSequence(s)
+ .WillOnce(Return(true));
+ EXPECT_CALL(handler, OffsetRule(addr, 2, kCFARegister, 0x9806 * data_factor))
+ .InSequence(s)
+ .WillOnce(Return(true));
+ EXPECT_CALL(handler, OffsetRule(addr, 3, kCFARegister, 0x995d * data_factor))
+ .InSequence(s)
+ .WillOnce(Return(true));
+ EXPECT_CALL(handler, SameValueRule(addr, 5))
+ .InSequence(s)
+ .WillOnce(Return(true));
+
+ EXPECT_CALL(handler, End()).WillOnce(Return(true));
+
+ ParseSection(&section);
+}
+
+// Check that restoring a rule set reports changes to the CFA rule.
+TEST_F(LulDwarfCFIInsn, DW_CFA_remember_and_restore_stateCFA) {
+ CFISection section(kBigEndian, 4);
+ StockCIEAndFDE(&section);
+
+ section.D8(lul::DW_CFA_remember_state)
+ .D8(lul::DW_CFA_advance_loc | 1)
+ .D8(lul::DW_CFA_def_cfa_offset)
+ .ULEB128(0x90481102)
+ .D8(lul::DW_CFA_advance_loc | 1)
+ .D8(lul::DW_CFA_restore_state)
+ .FinishEntry();
+
+ EXPECT_CALL(handler, ValOffsetRule(fde_start + code_factor, kCFARegister,
+ cfa_base_register, 0x90481102))
+ .InSequence(s)
+ .WillOnce(Return(true));
+ EXPECT_CALL(handler, ValOffsetRule(fde_start + code_factor * 2, kCFARegister,
+ cfa_base_register, cfa_offset))
+ .InSequence(s)
+ .WillOnce(Return(true));
+
+ EXPECT_CALL(handler, End()).WillOnce(Return(true));
+
+ ParseSection(&section);
+}
+
+TEST_F(LulDwarfCFIInsn, DW_CFA_nop) {
+ CFISection section(kLittleEndian, 4);
+ StockCIEAndFDE(&section);
+ section.D8(lul::DW_CFA_nop)
+ .D8(lul::DW_CFA_def_cfa)
+ .ULEB128(0x3fb8d4f1)
+ .ULEB128(0x078dc67b)
+ .D8(lul::DW_CFA_nop)
+ .FinishEntry();
+
+ EXPECT_CALL(handler,
+ ValOffsetRule(fde_start, kCFARegister, 0x3fb8d4f1, 0x078dc67b))
+ .InSequence(s)
+ .WillOnce(Return(true));
+ EXPECT_CALL(handler, End()).InSequence(s).WillOnce(Return(true));
+
+ ParseSection(&section);
+}
+
+TEST_F(LulDwarfCFIInsn, DW_CFA_GNU_window_save) {
+ CFISection section(kBigEndian, 4);
+ StockCIEAndFDE(&section);
+ section.D8(lul::DW_CFA_GNU_window_save).FinishEntry();
+
+ // Don't include all the rules in any particular sequence.
+
+ // The caller's %o0-%o7 have become the callee's %i0-%i7. This is
+ // the GCC register numbering.
+ for (int i = 8; i < 16; i++)
+ EXPECT_CALL(handler, RegisterRule(fde_start, i, i + 16))
+ .WillOnce(Return(true));
+ // The caller's %l0-%l7 and %i0-%i7 have been saved at the top of
+ // its frame.
+ for (int i = 16; i < 32; i++)
+ EXPECT_CALL(handler, OffsetRule(fde_start, i, kCFARegister, (i - 16) * 4))
+ .WillOnce(Return(true));
+
+ EXPECT_CALL(handler, End()).InSequence(s).WillOnce(Return(true));
+
+ ParseSection(&section);
+}
+
+TEST_F(LulDwarfCFIInsn, DW_CFA_GNU_args_size) {
+ CFISection section(kLittleEndian, 8);
+ StockCIEAndFDE(&section);
+ section.D8(lul::DW_CFA_GNU_args_size)
+ .ULEB128(0xeddfa520)
+ // Verify that we see this, meaning we parsed the above properly.
+ .D8(lul::DW_CFA_offset | 0x23)
+ .ULEB128(0x269)
+ .FinishEntry();
+
+ EXPECT_CALL(handler,
+ OffsetRule(fde_start, 0x23, kCFARegister, 0x269 * data_factor))
+ .InSequence(s)
+ .WillOnce(Return(true));
+ EXPECT_CALL(handler, End()).InSequence(s).WillOnce(Return(true));
+
+ ParseSection(&section);
+}
+
+TEST_F(LulDwarfCFIInsn, DW_CFA_GNU_negative_offset_extended) {
+ CFISection section(kLittleEndian, 4);
+ StockCIEAndFDE(&section);
+ section.D8(lul::DW_CFA_GNU_negative_offset_extended)
+ .ULEB128(0x430cc87a)
+ .ULEB128(0x613)
+ .FinishEntry();
+
+ EXPECT_CALL(handler, OffsetRule(fde_start, 0x430cc87a, kCFARegister,
+ -0x613 * data_factor))
+ .InSequence(s)
+ .WillOnce(Return(true));
+ EXPECT_CALL(handler, End()).InSequence(s).WillOnce(Return(true));
+
+ ParseSection(&section);
+}
+
+// Three FDEs: skip the second
+TEST_F(LulDwarfCFIInsn, SkipFDE) {
+ CFISection section(kBigEndian, 4);
+ Label cie;
+ section
+ // CIE, used by all FDEs.
+ .Mark(&cie)
+ .CIEHeader(0x010269f2, 0x9177, 0xedca5849, 2, "")
+ .D8(lul::DW_CFA_def_cfa)
+ .ULEB128(0x42ed390b)
+ .ULEB128(0x98f43aad)
+ .FinishEntry()
+ // First FDE.
+ .FDEHeader(cie, 0xa870ebdd, 0x60f6aa4)
+ .D8(lul::DW_CFA_register)
+ .ULEB128(0x3a860351)
+ .ULEB128(0x6c9a6bcf)
+ .FinishEntry()
+ // Second FDE.
+ .FDEHeader(cie, 0xc534f7c0, 0xf6552e9, true /* dwarf64 */)
+ .D8(lul::DW_CFA_register)
+ .ULEB128(0x1b62c234)
+ .ULEB128(0x26586b18)
+ .FinishEntry()
+ // Third FDE.
+ .FDEHeader(cie, 0xf681cfc8, 0x7e4594e)
+ .D8(lul::DW_CFA_register)
+ .ULEB128(0x26c53934)
+ .ULEB128(0x18eeb8a4)
+ .FinishEntry();
+
+ {
+ InSequence s;
+
+ // Process the first FDE.
+ EXPECT_CALL(handler, Entry(_, 0xa870ebdd, 0x60f6aa4, 2, "", 0xedca5849))
+ .WillOnce(Return(true));
+ EXPECT_CALL(handler,
+ ValOffsetRule(0xa870ebdd, kCFARegister, 0x42ed390b, 0x98f43aad))
+ .WillOnce(Return(true));
+ EXPECT_CALL(handler, RegisterRule(0xa870ebdd, 0x3a860351, 0x6c9a6bcf))
+ .WillOnce(Return(true));
+ EXPECT_CALL(handler, End()).WillOnce(Return(true));
+
+ // Skip the second FDE.
+ EXPECT_CALL(handler, Entry(_, 0xc534f7c0, 0xf6552e9, 2, "", 0xedca5849))
+ .WillOnce(Return(false));
+
+ // Process the third FDE.
+ EXPECT_CALL(handler, Entry(_, 0xf681cfc8, 0x7e4594e, 2, "", 0xedca5849))
+ .WillOnce(Return(true));
+ EXPECT_CALL(handler,
+ ValOffsetRule(0xf681cfc8, kCFARegister, 0x42ed390b, 0x98f43aad))
+ .WillOnce(Return(true));
+ EXPECT_CALL(handler, RegisterRule(0xf681cfc8, 0x26c53934, 0x18eeb8a4))
+ .WillOnce(Return(true));
+ EXPECT_CALL(handler, End()).WillOnce(Return(true));
+ }
+
+ ParseSection(&section);
+}
+
+// Quit processing in the middle of an entry's instructions.
+TEST_F(LulDwarfCFIInsn, QuitMidentry) {
+ CFISection section(kLittleEndian, 8);
+ StockCIEAndFDE(&section);
+ section.D8(lul::DW_CFA_register)
+ .ULEB128(0xe0cf850d)
+ .ULEB128(0x15aab431)
+ .D8(lul::DW_CFA_expression)
+ .ULEB128(0x46750aa5)
+ .Block("meat")
+ .FinishEntry();
+
+ EXPECT_CALL(handler, RegisterRule(fde_start, 0xe0cf850d, 0x15aab431))
+ .InSequence(s)
+ .WillOnce(Return(false));
+ EXPECT_CALL(handler, End()).InSequence(s).WillOnce(Return(true));
+
+ ParseSection(&section, false);
+}
+
+class LulDwarfCFIRestore : public CFIInsnFixture, public Test {};
+
+TEST_F(LulDwarfCFIRestore, RestoreUndefinedRuleUnchanged) {
+ CFISection section(kLittleEndian, 4);
+ StockCIEAndFDE(&section);
+ section.D8(lul::DW_CFA_undefined)
+ .ULEB128(0x0bac878e)
+ .D8(lul::DW_CFA_remember_state)
+ .D8(lul::DW_CFA_advance_loc | 1)
+ .D8(lul::DW_CFA_restore_state)
+ .FinishEntry();
+
+ EXPECT_CALL(handler, UndefinedRule(fde_start, 0x0bac878e))
+ .InSequence(s)
+ .WillOnce(Return(true));
+ EXPECT_CALL(handler, End()).WillOnce(Return(true));
+
+ ParseSection(&section);
+}
+
+TEST_F(LulDwarfCFIRestore, RestoreUndefinedRuleChanged) {
+ CFISection section(kLittleEndian, 4);
+ StockCIEAndFDE(&section);
+ section.D8(lul::DW_CFA_undefined)
+ .ULEB128(0x7dedff5f)
+ .D8(lul::DW_CFA_remember_state)
+ .D8(lul::DW_CFA_advance_loc | 1)
+ .D8(lul::DW_CFA_same_value)
+ .ULEB128(0x7dedff5f)
+ .D8(lul::DW_CFA_advance_loc | 1)
+ .D8(lul::DW_CFA_restore_state)
+ .FinishEntry();
+
+ EXPECT_CALL(handler, UndefinedRule(fde_start, 0x7dedff5f))
+ .InSequence(s)
+ .WillOnce(Return(true));
+ EXPECT_CALL(handler, SameValueRule(fde_start + code_factor, 0x7dedff5f))
+ .InSequence(s)
+ .WillOnce(Return(true));
+ EXPECT_CALL(handler, UndefinedRule(fde_start + 2 * code_factor, 0x7dedff5f))
+ .InSequence(s)
+ .WillOnce(Return(true));
+ EXPECT_CALL(handler, End()).WillOnce(Return(true));
+
+ ParseSection(&section);
+}
+
+TEST_F(LulDwarfCFIRestore, RestoreSameValueRuleUnchanged) {
+ CFISection section(kLittleEndian, 4);
+ StockCIEAndFDE(&section);
+ section.D8(lul::DW_CFA_same_value)
+ .ULEB128(0xadbc9b3a)
+ .D8(lul::DW_CFA_remember_state)
+ .D8(lul::DW_CFA_advance_loc | 1)
+ .D8(lul::DW_CFA_restore_state)
+ .FinishEntry();
+
+ EXPECT_CALL(handler, SameValueRule(fde_start, 0xadbc9b3a))
+ .InSequence(s)
+ .WillOnce(Return(true));
+ EXPECT_CALL(handler, End()).WillOnce(Return(true));
+
+ ParseSection(&section);
+}
+
+TEST_F(LulDwarfCFIRestore, RestoreSameValueRuleChanged) {
+ CFISection section(kLittleEndian, 4);
+ StockCIEAndFDE(&section);
+ section.D8(lul::DW_CFA_same_value)
+ .ULEB128(0x3d90dcb5)
+ .D8(lul::DW_CFA_remember_state)
+ .D8(lul::DW_CFA_advance_loc | 1)
+ .D8(lul::DW_CFA_undefined)
+ .ULEB128(0x3d90dcb5)
+ .D8(lul::DW_CFA_advance_loc | 1)
+ .D8(lul::DW_CFA_restore_state)
+ .FinishEntry();
+
+ EXPECT_CALL(handler, SameValueRule(fde_start, 0x3d90dcb5))
+ .InSequence(s)
+ .WillOnce(Return(true));
+ EXPECT_CALL(handler, UndefinedRule(fde_start + code_factor, 0x3d90dcb5))
+ .InSequence(s)
+ .WillOnce(Return(true));
+ EXPECT_CALL(handler, SameValueRule(fde_start + 2 * code_factor, 0x3d90dcb5))
+ .InSequence(s)
+ .WillOnce(Return(true));
+ EXPECT_CALL(handler, End()).WillOnce(Return(true));
+
+ ParseSection(&section);
+}
+
+TEST_F(LulDwarfCFIRestore, RestoreOffsetRuleUnchanged) {
+ CFISection section(kLittleEndian, 4);
+ StockCIEAndFDE(&section);
+ section.D8(lul::DW_CFA_offset | 0x14)
+ .ULEB128(0xb6f)
+ .D8(lul::DW_CFA_remember_state)
+ .D8(lul::DW_CFA_advance_loc | 1)
+ .D8(lul::DW_CFA_restore_state)
+ .FinishEntry();
+
+ EXPECT_CALL(handler,
+ OffsetRule(fde_start, 0x14, kCFARegister, 0xb6f * data_factor))
+ .InSequence(s)
+ .WillOnce(Return(true));
+ EXPECT_CALL(handler, End()).WillOnce(Return(true));
+
+ ParseSection(&section);
+}
+
+TEST_F(LulDwarfCFIRestore, RestoreOffsetRuleChanged) {
+ CFISection section(kLittleEndian, 4);
+ StockCIEAndFDE(&section);
+ section.D8(lul::DW_CFA_offset | 0x21)
+ .ULEB128(0xeb7)
+ .D8(lul::DW_CFA_remember_state)
+ .D8(lul::DW_CFA_advance_loc | 1)
+ .D8(lul::DW_CFA_undefined)
+ .ULEB128(0x21)
+ .D8(lul::DW_CFA_advance_loc | 1)
+ .D8(lul::DW_CFA_restore_state)
+ .FinishEntry();
+
+ EXPECT_CALL(handler,
+ OffsetRule(fde_start, 0x21, kCFARegister, 0xeb7 * data_factor))
+ .InSequence(s)
+ .WillOnce(Return(true));
+ EXPECT_CALL(handler, UndefinedRule(fde_start + code_factor, 0x21))
+ .InSequence(s)
+ .WillOnce(Return(true));
+ EXPECT_CALL(handler, OffsetRule(fde_start + 2 * code_factor, 0x21,
+ kCFARegister, 0xeb7 * data_factor))
+ .InSequence(s)
+ .WillOnce(Return(true));
+ EXPECT_CALL(handler, End()).WillOnce(Return(true));
+
+ ParseSection(&section);
+}
+
+TEST_F(LulDwarfCFIRestore, RestoreOffsetRuleChangedOffset) {
+ CFISection section(kLittleEndian, 4);
+ StockCIEAndFDE(&section);
+ section.D8(lul::DW_CFA_offset | 0x21)
+ .ULEB128(0x134)
+ .D8(lul::DW_CFA_remember_state)
+ .D8(lul::DW_CFA_advance_loc | 1)
+ .D8(lul::DW_CFA_offset | 0x21)
+ .ULEB128(0xf4f)
+ .D8(lul::DW_CFA_advance_loc | 1)
+ .D8(lul::DW_CFA_restore_state)
+ .FinishEntry();
+
+ EXPECT_CALL(handler,
+ OffsetRule(fde_start, 0x21, kCFARegister, 0x134 * data_factor))
+ .InSequence(s)
+ .WillOnce(Return(true));
+ EXPECT_CALL(handler, OffsetRule(fde_start + code_factor, 0x21, kCFARegister,
+ 0xf4f * data_factor))
+ .InSequence(s)
+ .WillOnce(Return(true));
+ EXPECT_CALL(handler, OffsetRule(fde_start + 2 * code_factor, 0x21,
+ kCFARegister, 0x134 * data_factor))
+ .InSequence(s)
+ .WillOnce(Return(true));
+ EXPECT_CALL(handler, End()).WillOnce(Return(true));
+
+ ParseSection(&section);
+}
+
+TEST_F(LulDwarfCFIRestore, RestoreValOffsetRuleUnchanged) {
+ CFISection section(kLittleEndian, 4);
+ StockCIEAndFDE(&section);
+ section.D8(lul::DW_CFA_val_offset)
+ .ULEB128(0x829caee6)
+ .ULEB128(0xe4c)
+ .D8(lul::DW_CFA_remember_state)
+ .D8(lul::DW_CFA_advance_loc | 1)
+ .D8(lul::DW_CFA_restore_state)
+ .FinishEntry();
+
+ EXPECT_CALL(handler, ValOffsetRule(fde_start, 0x829caee6, kCFARegister,
+ 0xe4c * data_factor))
+ .InSequence(s)
+ .WillOnce(Return(true));
+ EXPECT_CALL(handler, End()).WillOnce(Return(true));
+
+ ParseSection(&section);
+}
+
+TEST_F(LulDwarfCFIRestore, RestoreValOffsetRuleChanged) {
+ CFISection section(kLittleEndian, 4);
+ StockCIEAndFDE(&section);
+ section.D8(lul::DW_CFA_val_offset)
+ .ULEB128(0xf17c36d6)
+ .ULEB128(0xeb7)
+ .D8(lul::DW_CFA_remember_state)
+ .D8(lul::DW_CFA_advance_loc | 1)
+ .D8(lul::DW_CFA_undefined)
+ .ULEB128(0xf17c36d6)
+ .D8(lul::DW_CFA_advance_loc | 1)
+ .D8(lul::DW_CFA_restore_state)
+ .FinishEntry();
+
+ EXPECT_CALL(handler, ValOffsetRule(fde_start, 0xf17c36d6, kCFARegister,
+ 0xeb7 * data_factor))
+ .InSequence(s)
+ .WillOnce(Return(true));
+ EXPECT_CALL(handler, UndefinedRule(fde_start + code_factor, 0xf17c36d6))
+ .InSequence(s)
+ .WillOnce(Return(true));
+ EXPECT_CALL(handler, ValOffsetRule(fde_start + 2 * code_factor, 0xf17c36d6,
+ kCFARegister, 0xeb7 * data_factor))
+ .InSequence(s)
+ .WillOnce(Return(true));
+ EXPECT_CALL(handler, End()).WillOnce(Return(true));
+
+ ParseSection(&section);
+}
+
+TEST_F(LulDwarfCFIRestore, RestoreValOffsetRuleChangedValOffset) {
+ CFISection section(kLittleEndian, 4);
+ StockCIEAndFDE(&section);
+ section.D8(lul::DW_CFA_val_offset)
+ .ULEB128(0x2cf0ab1b)
+ .ULEB128(0x562)
+ .D8(lul::DW_CFA_remember_state)
+ .D8(lul::DW_CFA_advance_loc | 1)
+ .D8(lul::DW_CFA_val_offset)
+ .ULEB128(0x2cf0ab1b)
+ .ULEB128(0xe88)
+ .D8(lul::DW_CFA_advance_loc | 1)
+ .D8(lul::DW_CFA_restore_state)
+ .FinishEntry();
+
+ EXPECT_CALL(handler, ValOffsetRule(fde_start, 0x2cf0ab1b, kCFARegister,
+ 0x562 * data_factor))
+ .InSequence(s)
+ .WillOnce(Return(true));
+ EXPECT_CALL(handler, ValOffsetRule(fde_start + code_factor, 0x2cf0ab1b,
+ kCFARegister, 0xe88 * data_factor))
+ .InSequence(s)
+ .WillOnce(Return(true));
+ EXPECT_CALL(handler, ValOffsetRule(fde_start + 2 * code_factor, 0x2cf0ab1b,
+ kCFARegister, 0x562 * data_factor))
+ .InSequence(s)
+ .WillOnce(Return(true));
+ EXPECT_CALL(handler, End()).WillOnce(Return(true));
+
+ ParseSection(&section);
+}
+
+TEST_F(LulDwarfCFIRestore, RestoreRegisterRuleUnchanged) {
+ CFISection section(kLittleEndian, 4);
+ StockCIEAndFDE(&section);
+ section.D8(lul::DW_CFA_register)
+ .ULEB128(0x77514acc)
+ .ULEB128(0x464de4ce)
+ .D8(lul::DW_CFA_remember_state)
+ .D8(lul::DW_CFA_advance_loc | 1)
+ .D8(lul::DW_CFA_restore_state)
+ .FinishEntry();
+
+ EXPECT_CALL(handler, RegisterRule(fde_start, 0x77514acc, 0x464de4ce))
+ .InSequence(s)
+ .WillOnce(Return(true));
+ EXPECT_CALL(handler, End()).WillOnce(Return(true));
+
+ ParseSection(&section);
+}
+
+TEST_F(LulDwarfCFIRestore, RestoreRegisterRuleChanged) {
+ CFISection section(kLittleEndian, 4);
+ StockCIEAndFDE(&section);
+ section.D8(lul::DW_CFA_register)
+ .ULEB128(0xe39acce5)
+ .ULEB128(0x095f1559)
+ .D8(lul::DW_CFA_remember_state)
+ .D8(lul::DW_CFA_advance_loc | 1)
+ .D8(lul::DW_CFA_undefined)
+ .ULEB128(0xe39acce5)
+ .D8(lul::DW_CFA_advance_loc | 1)
+ .D8(lul::DW_CFA_restore_state)
+ .FinishEntry();
+
+ EXPECT_CALL(handler, RegisterRule(fde_start, 0xe39acce5, 0x095f1559))
+ .InSequence(s)
+ .WillOnce(Return(true));
+ EXPECT_CALL(handler, UndefinedRule(fde_start + code_factor, 0xe39acce5))
+ .InSequence(s)
+ .WillOnce(Return(true));
+ EXPECT_CALL(handler,
+ RegisterRule(fde_start + 2 * code_factor, 0xe39acce5, 0x095f1559))
+ .InSequence(s)
+ .WillOnce(Return(true));
+ EXPECT_CALL(handler, End()).WillOnce(Return(true));
+
+ ParseSection(&section);
+}
+
+TEST_F(LulDwarfCFIRestore, RestoreRegisterRuleChangedRegister) {
+ CFISection section(kLittleEndian, 4);
+ StockCIEAndFDE(&section);
+ section.D8(lul::DW_CFA_register)
+ .ULEB128(0xd40e21b1)
+ .ULEB128(0x16607d6a)
+ .D8(lul::DW_CFA_remember_state)
+ .D8(lul::DW_CFA_advance_loc | 1)
+ .D8(lul::DW_CFA_register)
+ .ULEB128(0xd40e21b1)
+ .ULEB128(0xbabb4742)
+ .D8(lul::DW_CFA_advance_loc | 1)
+ .D8(lul::DW_CFA_restore_state)
+ .FinishEntry();
+
+ EXPECT_CALL(handler, RegisterRule(fde_start, 0xd40e21b1, 0x16607d6a))
+ .InSequence(s)
+ .WillOnce(Return(true));
+ EXPECT_CALL(handler,
+ RegisterRule(fde_start + code_factor, 0xd40e21b1, 0xbabb4742))
+ .InSequence(s)
+ .WillOnce(Return(true));
+ EXPECT_CALL(handler,
+ RegisterRule(fde_start + 2 * code_factor, 0xd40e21b1, 0x16607d6a))
+ .InSequence(s)
+ .WillOnce(Return(true));
+ EXPECT_CALL(handler, End()).WillOnce(Return(true));
+
+ ParseSection(&section);
+}
+
+TEST_F(LulDwarfCFIRestore, RestoreExpressionRuleUnchanged) {
+ ByteReader reader(ENDIANNESS_LITTLE);
+ CFISection section(kLittleEndian, 4);
+ ImageSlice dwarf("dwarf");
+ StockCIEAndFDE(&section);
+ section.D8(lul::DW_CFA_expression)
+ .ULEB128(0x666ae152)
+ .Block("dwarf")
+ .D8(lul::DW_CFA_remember_state)
+ .D8(lul::DW_CFA_advance_loc | 1)
+ .D8(lul::DW_CFA_restore_state)
+ .FinishEntry();
+
+ EXPECT_CALL(handler, ExpressionRule(fde_start, 0x666ae152, dwarf))
+ .InSequence(s)
+ .WillOnce(Return(true));
+ EXPECT_CALL(handler, End()).WillOnce(Return(true));
+
+ ParseSection(&section, true, &reader);
+}
+
+TEST_F(LulDwarfCFIRestore, RestoreExpressionRuleChanged) {
+ ByteReader reader(ENDIANNESS_LITTLE);
+ CFISection section(kLittleEndian, 4);
+ ImageSlice elf("elf");
+ StockCIEAndFDE(&section);
+ section.D8(lul::DW_CFA_expression)
+ .ULEB128(0xb5ca5c46)
+ .Block(elf)
+ .D8(lul::DW_CFA_remember_state)
+ .D8(lul::DW_CFA_advance_loc | 1)
+ .D8(lul::DW_CFA_undefined)
+ .ULEB128(0xb5ca5c46)
+ .D8(lul::DW_CFA_advance_loc | 1)
+ .D8(lul::DW_CFA_restore_state)
+ .FinishEntry();
+
+ EXPECT_CALL(handler, ExpressionRule(fde_start, 0xb5ca5c46, elf))
+ .InSequence(s)
+ .WillOnce(Return(true));
+ EXPECT_CALL(handler, UndefinedRule(fde_start + code_factor, 0xb5ca5c46))
+ .InSequence(s)
+ .WillOnce(Return(true));
+ EXPECT_CALL(handler,
+ ExpressionRule(fde_start + 2 * code_factor, 0xb5ca5c46, elf))
+ .InSequence(s)
+ .WillOnce(Return(true));
+ EXPECT_CALL(handler, End()).WillOnce(Return(true));
+
+ ParseSection(&section, true, &reader);
+}
+
+TEST_F(LulDwarfCFIRestore, RestoreExpressionRuleChangedExpression) {
+ ByteReader reader(ENDIANNESS_LITTLE);
+ CFISection section(kLittleEndian, 4);
+ StockCIEAndFDE(&section);
+ ImageSlice smurf("smurf");
+ ImageSlice orc("orc");
+ section.D8(lul::DW_CFA_expression)
+ .ULEB128(0x500f5739)
+ .Block(smurf)
+ .D8(lul::DW_CFA_remember_state)
+ .D8(lul::DW_CFA_advance_loc | 1)
+ .D8(lul::DW_CFA_expression)
+ .ULEB128(0x500f5739)
+ .Block(orc)
+ .D8(lul::DW_CFA_advance_loc | 1)
+ .D8(lul::DW_CFA_restore_state)
+ .FinishEntry();
+
+ EXPECT_CALL(handler, ExpressionRule(fde_start, 0x500f5739, smurf))
+ .InSequence(s)
+ .WillOnce(Return(true));
+ EXPECT_CALL(handler, ExpressionRule(fde_start + code_factor, 0x500f5739, orc))
+ .InSequence(s)
+ .WillOnce(Return(true));
+ // Expectations are not wishes.
+ EXPECT_CALL(handler,
+ ExpressionRule(fde_start + 2 * code_factor, 0x500f5739, smurf))
+ .InSequence(s)
+ .WillOnce(Return(true));
+ EXPECT_CALL(handler, End()).WillOnce(Return(true));
+
+ ParseSection(&section, true, &reader);
+}
+
+TEST_F(LulDwarfCFIRestore, RestoreValExpressionRuleUnchanged) {
+ ByteReader reader(ENDIANNESS_LITTLE);
+ CFISection section(kLittleEndian, 4);
+ ImageSlice hideous("hideous");
+ StockCIEAndFDE(&section);
+ section.D8(lul::DW_CFA_val_expression)
+ .ULEB128(0x666ae152)
+ .Block(hideous)
+ .D8(lul::DW_CFA_remember_state)
+ .D8(lul::DW_CFA_advance_loc | 1)
+ .D8(lul::DW_CFA_restore_state)
+ .FinishEntry();
+
+ EXPECT_CALL(handler, ValExpressionRule(fde_start, 0x666ae152, hideous))
+ .InSequence(s)
+ .WillOnce(Return(true));
+ EXPECT_CALL(handler, End()).WillOnce(Return(true));
+
+ ParseSection(&section, true, &reader);
+}
+
+TEST_F(LulDwarfCFIRestore, RestoreValExpressionRuleChanged) {
+ ByteReader reader(ENDIANNESS_LITTLE);
+ CFISection section(kLittleEndian, 4);
+ ImageSlice revolting("revolting");
+ StockCIEAndFDE(&section);
+ section.D8(lul::DW_CFA_val_expression)
+ .ULEB128(0xb5ca5c46)
+ .Block(revolting)
+ .D8(lul::DW_CFA_remember_state)
+ .D8(lul::DW_CFA_advance_loc | 1)
+ .D8(lul::DW_CFA_undefined)
+ .ULEB128(0xb5ca5c46)
+ .D8(lul::DW_CFA_advance_loc | 1)
+ .D8(lul::DW_CFA_restore_state)
+ .FinishEntry();
+
+ PERHAPS_WRITE_DEBUG_FRAME_FILE("RestoreValExpressionRuleChanged", section);
+
+ EXPECT_CALL(handler, ValExpressionRule(fde_start, 0xb5ca5c46, revolting))
+ .InSequence(s)
+ .WillOnce(Return(true));
+ EXPECT_CALL(handler, UndefinedRule(fde_start + code_factor, 0xb5ca5c46))
+ .InSequence(s)
+ .WillOnce(Return(true));
+ EXPECT_CALL(handler, ValExpressionRule(fde_start + 2 * code_factor,
+ 0xb5ca5c46, revolting))
+ .InSequence(s)
+ .WillOnce(Return(true));
+ EXPECT_CALL(handler, End()).WillOnce(Return(true));
+
+ ParseSection(&section, true, &reader);
+}
+
+TEST_F(LulDwarfCFIRestore, RestoreValExpressionRuleChangedValExpression) {
+ ByteReader reader(ENDIANNESS_LITTLE);
+ CFISection section(kLittleEndian, 4);
+ ImageSlice repulsive("repulsive");
+ ImageSlice nauseous("nauseous");
+ StockCIEAndFDE(&section);
+ section.D8(lul::DW_CFA_val_expression)
+ .ULEB128(0x500f5739)
+ .Block(repulsive)
+ .D8(lul::DW_CFA_remember_state)
+ .D8(lul::DW_CFA_advance_loc | 1)
+ .D8(lul::DW_CFA_val_expression)
+ .ULEB128(0x500f5739)
+ .Block(nauseous)
+ .D8(lul::DW_CFA_advance_loc | 1)
+ .D8(lul::DW_CFA_restore_state)
+ .FinishEntry();
+
+ PERHAPS_WRITE_DEBUG_FRAME_FILE("RestoreValExpressionRuleChangedValExpression",
+ section);
+
+ EXPECT_CALL(handler, ValExpressionRule(fde_start, 0x500f5739, repulsive))
+ .InSequence(s)
+ .WillOnce(Return(true));
+ EXPECT_CALL(handler,
+ ValExpressionRule(fde_start + code_factor, 0x500f5739, nauseous))
+ .InSequence(s)
+ .WillOnce(Return(true));
+ // Expectations are not wishes.
+ EXPECT_CALL(handler, ValExpressionRule(fde_start + 2 * code_factor,
+ 0x500f5739, repulsive))
+ .InSequence(s)
+ .WillOnce(Return(true));
+ EXPECT_CALL(handler, End()).WillOnce(Return(true));
+
+ ParseSection(&section, true, &reader);
+}
+
+struct EHFrameFixture : public CFIInsnFixture {
+ EHFrameFixture() : CFIInsnFixture(), section(kBigEndian, 4, true) {
+ encoded_pointer_bases.cfi = 0x7f496cb2;
+ encoded_pointer_bases.text = 0x540f67b6;
+ encoded_pointer_bases.data = 0xe3eab768;
+ section.SetEncodedPointerBases(encoded_pointer_bases);
+ }
+ CFISection section;
+ CFISection::EncodedPointerBases encoded_pointer_bases;
+
+ // Parse CFIInsnFixture::ParseSection, but parse the section as
+ // .eh_frame data, supplying stock base addresses.
+ void ParseEHFrameSection(CFISection* section, bool succeeds = true) {
+ EXPECT_TRUE(section->ContainsEHFrame());
+ string contents;
+ EXPECT_TRUE(section->GetContents(&contents));
+ lul::Endianness endianness;
+ if (section->endianness() == kBigEndian)
+ endianness = ENDIANNESS_BIG;
+ else {
+ assert(section->endianness() == kLittleEndian);
+ endianness = ENDIANNESS_LITTLE;
+ }
+ ByteReader reader(endianness);
+ reader.SetAddressSize(section->AddressSize());
+ reader.SetCFIDataBase(encoded_pointer_bases.cfi, contents.data());
+ reader.SetTextBase(encoded_pointer_bases.text);
+ reader.SetDataBase(encoded_pointer_bases.data);
+ CallFrameInfo parser(contents.data(), contents.size(), &reader, &handler,
+ &reporter, true);
+ if (succeeds)
+ EXPECT_TRUE(parser.Start());
+ else
+ EXPECT_FALSE(parser.Start());
+ }
+};
+
+class LulDwarfEHFrame : public EHFrameFixture, public Test {};
+
+// A simple CIE, an FDE, and a terminator.
+TEST_F(LulDwarfEHFrame, Terminator) {
+ Label cie;
+ section.Mark(&cie)
+ .CIEHeader(9968, 2466, 67, 1, "")
+ .D8(lul::DW_CFA_def_cfa)
+ .ULEB128(3772)
+ .ULEB128(1372)
+ .FinishEntry()
+ .FDEHeader(cie, 0x848037a1, 0x7b30475e)
+ .D8(lul::DW_CFA_set_loc)
+ .D32(0x17713850)
+ .D8(lul::DW_CFA_undefined)
+ .ULEB128(5721)
+ .FinishEntry()
+ .D32(0) // Terminate the sequence.
+ // This FDE should be ignored.
+ .FDEHeader(cie, 0xf19629fe, 0x439fb09b)
+ .FinishEntry();
+
+ PERHAPS_WRITE_EH_FRAME_FILE("EHFrame.Terminator", section);
+
+ EXPECT_CALL(handler, Entry(_, 0x848037a1, 0x7b30475e, 1, "", 67))
+ .InSequence(s)
+ .WillOnce(Return(true));
+ EXPECT_CALL(handler, ValOffsetRule(0x848037a1, kCFARegister, 3772, 1372))
+ .InSequence(s)
+ .WillOnce(Return(true));
+ EXPECT_CALL(handler, UndefinedRule(0x17713850, 5721))
+ .InSequence(s)
+ .WillOnce(Return(true));
+ EXPECT_CALL(handler, End()).InSequence(s).WillOnce(Return(true));
+ EXPECT_CALL(reporter, EarlyEHTerminator(_)).InSequence(s).WillOnce(Return());
+
+ ParseEHFrameSection(&section);
+}
+
+// The parser should recognize the Linux Standards Base 'z' augmentations.
+TEST_F(LulDwarfEHFrame, SimpleFDE) {
+ lul::DwarfPointerEncoding lsda_encoding = lul::DwarfPointerEncoding(
+ lul::DW_EH_PE_indirect | lul::DW_EH_PE_datarel | lul::DW_EH_PE_sdata2);
+ lul::DwarfPointerEncoding fde_encoding =
+ lul::DwarfPointerEncoding(lul::DW_EH_PE_textrel | lul::DW_EH_PE_udata2);
+
+ section.SetPointerEncoding(fde_encoding);
+ section.SetEncodedPointerBases(encoded_pointer_bases);
+ Label cie;
+ section.Mark(&cie)
+ .CIEHeader(4873, 7012, 100, 1, "zSLPR")
+ .ULEB128(7) // Augmentation data length
+ .D8(lsda_encoding) // LSDA pointer format
+ .D8(lul::DW_EH_PE_pcrel) // personality pointer format
+ .EncodedPointer(0x97baa00, lul::DW_EH_PE_pcrel) // and value
+ .D8(fde_encoding) // FDE pointer format
+ .D8(lul::DW_CFA_def_cfa)
+ .ULEB128(6706)
+ .ULEB128(31)
+ .FinishEntry()
+ .FDEHeader(cie, 0x540f6b56, 0xf686)
+ .ULEB128(2) // Augmentation data length
+ .EncodedPointer(0xe3eab475, lsda_encoding) // LSDA pointer, signed
+ .D8(lul::DW_CFA_set_loc)
+ .EncodedPointer(0x540fa4ce, fde_encoding)
+ .D8(lul::DW_CFA_undefined)
+ .ULEB128(0x675e)
+ .FinishEntry()
+ .D32(0); // terminator
+
+ PERHAPS_WRITE_EH_FRAME_FILE("EHFrame.SimpleFDE", section);
+
+ EXPECT_CALL(handler, Entry(_, 0x540f6b56, 0xf686, 1, "zSLPR", 100))
+ .InSequence(s)
+ .WillOnce(Return(true));
+ EXPECT_CALL(handler, PersonalityRoutine(0x97baa00, false))
+ .InSequence(s)
+ .WillOnce(Return(true));
+ EXPECT_CALL(handler, LanguageSpecificDataArea(0xe3eab475, true))
+ .InSequence(s)
+ .WillOnce(Return(true));
+ EXPECT_CALL(handler, SignalHandler()).InSequence(s).WillOnce(Return(true));
+ EXPECT_CALL(handler, ValOffsetRule(0x540f6b56, kCFARegister, 6706, 31))
+ .InSequence(s)
+ .WillOnce(Return(true));
+ EXPECT_CALL(handler, UndefinedRule(0x540fa4ce, 0x675e))
+ .InSequence(s)
+ .WillOnce(Return(true));
+ EXPECT_CALL(handler, End()).InSequence(s).WillOnce(Return(true));
+
+ ParseEHFrameSection(&section);
+}
+
+// Check that we can handle an empty 'z' augmentation.
+TEST_F(LulDwarfEHFrame, EmptyZ) {
+ Label cie;
+ section.Mark(&cie)
+ .CIEHeader(5955, 5805, 228, 1, "z")
+ .ULEB128(0) // Augmentation data length
+ .D8(lul::DW_CFA_def_cfa)
+ .ULEB128(3629)
+ .ULEB128(247)
+ .FinishEntry()
+ .FDEHeader(cie, 0xda007738, 0xfb55c641)
+ .ULEB128(0) // Augmentation data length
+ .D8(lul::DW_CFA_advance_loc1)
+ .D8(11)
+ .D8(lul::DW_CFA_undefined)
+ .ULEB128(3769)
+ .FinishEntry();
+
+ PERHAPS_WRITE_EH_FRAME_FILE("EHFrame.EmptyZ", section);
+
+ EXPECT_CALL(handler, Entry(_, 0xda007738, 0xfb55c641, 1, "z", 228))
+ .InSequence(s)
+ .WillOnce(Return(true));
+ EXPECT_CALL(handler, ValOffsetRule(0xda007738, kCFARegister, 3629, 247))
+ .InSequence(s)
+ .WillOnce(Return(true));
+ EXPECT_CALL(handler, UndefinedRule(0xda007738 + 11 * 5955, 3769))
+ .InSequence(s)
+ .WillOnce(Return(true));
+ EXPECT_CALL(handler, End()).InSequence(s).WillOnce(Return(true));
+
+ ParseEHFrameSection(&section);
+}
+
+// Check that we recognize bad 'z' augmentation characters.
+TEST_F(LulDwarfEHFrame, BadZ) {
+ Label cie;
+ section.Mark(&cie)
+ .CIEHeader(6937, 1045, 142, 1, "zQ")
+ .ULEB128(0) // Augmentation data length
+ .D8(lul::DW_CFA_def_cfa)
+ .ULEB128(9006)
+ .ULEB128(7725)
+ .FinishEntry()
+ .FDEHeader(cie, 0x1293efa8, 0x236f53f2)
+ .ULEB128(0) // Augmentation data length
+ .D8(lul::DW_CFA_advance_loc | 12)
+ .D8(lul::DW_CFA_register)
+ .ULEB128(5667)
+ .ULEB128(3462)
+ .FinishEntry();
+
+ PERHAPS_WRITE_EH_FRAME_FILE("EHFrame.BadZ", section);
+
+ EXPECT_CALL(reporter, UnrecognizedAugmentation(_, "zQ")).WillOnce(Return());
+
+ ParseEHFrameSection(&section, false);
+}
+
+TEST_F(LulDwarfEHFrame, zL) {
+ Label cie;
+ lul::DwarfPointerEncoding lsda_encoding =
+ lul::DwarfPointerEncoding(lul::DW_EH_PE_funcrel | lul::DW_EH_PE_udata2);
+ section.Mark(&cie)
+ .CIEHeader(9285, 9959, 54, 1, "zL")
+ .ULEB128(1) // Augmentation data length
+ .D8(lsda_encoding) // encoding for LSDA pointer in FDE
+
+ .FinishEntry()
+ .FDEHeader(cie, 0xd40091aa, 0x9aa6e746)
+ .ULEB128(2) // Augmentation data length
+ .EncodedPointer(0xd40099cd, lsda_encoding) // LSDA pointer
+ .FinishEntry()
+ .D32(0); // terminator
+
+ PERHAPS_WRITE_EH_FRAME_FILE("EHFrame.zL", section);
+
+ EXPECT_CALL(handler, Entry(_, 0xd40091aa, 0x9aa6e746, 1, "zL", 54))
+ .InSequence(s)
+ .WillOnce(Return(true));
+ EXPECT_CALL(handler, LanguageSpecificDataArea(0xd40099cd, false))
+ .InSequence(s)
+ .WillOnce(Return(true));
+ EXPECT_CALL(handler, End()).InSequence(s).WillOnce(Return(true));
+
+ ParseEHFrameSection(&section);
+}
+
+TEST_F(LulDwarfEHFrame, zP) {
+ Label cie;
+ lul::DwarfPointerEncoding personality_encoding =
+ lul::DwarfPointerEncoding(lul::DW_EH_PE_datarel | lul::DW_EH_PE_udata2);
+ section.Mark(&cie)
+ .CIEHeader(1097, 6313, 17, 1, "zP")
+ .ULEB128(3) // Augmentation data length
+ .D8(personality_encoding) // encoding for personality routine
+ .EncodedPointer(0xe3eaccac, personality_encoding) // value
+ .FinishEntry()
+ .FDEHeader(cie, 0x0c8350c9, 0xbef11087)
+ .ULEB128(0) // Augmentation data length
+ .FinishEntry()
+ .D32(0); // terminator
+
+ PERHAPS_WRITE_EH_FRAME_FILE("EHFrame.zP", section);
+
+ EXPECT_CALL(handler, Entry(_, 0x0c8350c9, 0xbef11087, 1, "zP", 17))
+ .InSequence(s)
+ .WillOnce(Return(true));
+ EXPECT_CALL(handler, PersonalityRoutine(0xe3eaccac, false))
+ .InSequence(s)
+ .WillOnce(Return(true));
+ EXPECT_CALL(handler, End()).InSequence(s).WillOnce(Return(true));
+
+ ParseEHFrameSection(&section);
+}
+
+TEST_F(LulDwarfEHFrame, zR) {
+ Label cie;
+ lul::DwarfPointerEncoding pointer_encoding =
+ lul::DwarfPointerEncoding(lul::DW_EH_PE_textrel | lul::DW_EH_PE_sdata2);
+ section.SetPointerEncoding(pointer_encoding);
+ section.Mark(&cie)
+ .CIEHeader(8011, 5496, 75, 1, "zR")
+ .ULEB128(1) // Augmentation data length
+ .D8(pointer_encoding) // encoding for FDE addresses
+ .FinishEntry()
+ .FDEHeader(cie, 0x540f9431, 0xbd0)
+ .ULEB128(0) // Augmentation data length
+ .FinishEntry()
+ .D32(0); // terminator
+
+ PERHAPS_WRITE_EH_FRAME_FILE("EHFrame.zR", section);
+
+ EXPECT_CALL(handler, Entry(_, 0x540f9431, 0xbd0, 1, "zR", 75))
+ .InSequence(s)
+ .WillOnce(Return(true));
+ EXPECT_CALL(handler, End()).InSequence(s).WillOnce(Return(true));
+
+ ParseEHFrameSection(&section);
+}
+
+TEST_F(LulDwarfEHFrame, zS) {
+ Label cie;
+ section.Mark(&cie)
+ .CIEHeader(9217, 7694, 57, 1, "zS")
+ .ULEB128(0) // Augmentation data length
+ .FinishEntry()
+ .FDEHeader(cie, 0xd40091aa, 0x9aa6e746)
+ .ULEB128(0) // Augmentation data length
+ .FinishEntry()
+ .D32(0); // terminator
+
+ PERHAPS_WRITE_EH_FRAME_FILE("EHFrame.zS", section);
+
+ EXPECT_CALL(handler, Entry(_, 0xd40091aa, 0x9aa6e746, 1, "zS", 57))
+ .InSequence(s)
+ .WillOnce(Return(true));
+ EXPECT_CALL(handler, SignalHandler()).InSequence(s).WillOnce(Return(true));
+ EXPECT_CALL(handler, End()).InSequence(s).WillOnce(Return(true));
+
+ ParseEHFrameSection(&section);
+}
+
+// These tests require manual inspection of the test output.
+struct CFIReporterFixture {
+ CFIReporterFixture()
+ : reporter(gtest_logging_sink_for_LulTestDwarf, "test file name",
+ "test section name") {}
+ CallFrameInfo::Reporter reporter;
+};
+
+class LulDwarfCFIReporter : public CFIReporterFixture, public Test {};
+
+TEST_F(LulDwarfCFIReporter, Incomplete) {
+ reporter.Incomplete(0x0102030405060708ULL, CallFrameInfo::kUnknown);
+}
+
+TEST_F(LulDwarfCFIReporter, EarlyEHTerminator) {
+ reporter.EarlyEHTerminator(0x0102030405060708ULL);
+}
+
+TEST_F(LulDwarfCFIReporter, CIEPointerOutOfRange) {
+ reporter.CIEPointerOutOfRange(0x0123456789abcdefULL, 0xfedcba9876543210ULL);
+}
+
+TEST_F(LulDwarfCFIReporter, BadCIEId) {
+ reporter.BadCIEId(0x0123456789abcdefULL, 0xfedcba9876543210ULL);
+}
+
+TEST_F(LulDwarfCFIReporter, UnrecognizedVersion) {
+ reporter.UnrecognizedVersion(0x0123456789abcdefULL, 43);
+}
+
+TEST_F(LulDwarfCFIReporter, UnrecognizedAugmentation) {
+ reporter.UnrecognizedAugmentation(0x0123456789abcdefULL, "poodles");
+}
+
+TEST_F(LulDwarfCFIReporter, InvalidPointerEncoding) {
+ reporter.InvalidPointerEncoding(0x0123456789abcdefULL, 0x42);
+}
+
+TEST_F(LulDwarfCFIReporter, UnusablePointerEncoding) {
+ reporter.UnusablePointerEncoding(0x0123456789abcdefULL, 0x42);
+}
+
+TEST_F(LulDwarfCFIReporter, RestoreInCIE) {
+ reporter.RestoreInCIE(0x0123456789abcdefULL, 0xfedcba9876543210ULL);
+}
+
+TEST_F(LulDwarfCFIReporter, BadInstruction) {
+ reporter.BadInstruction(0x0123456789abcdefULL, CallFrameInfo::kFDE,
+ 0xfedcba9876543210ULL);
+}
+
+TEST_F(LulDwarfCFIReporter, NoCFARule) {
+ reporter.NoCFARule(0x0123456789abcdefULL, CallFrameInfo::kCIE,
+ 0xfedcba9876543210ULL);
+}
+
+TEST_F(LulDwarfCFIReporter, EmptyStateStack) {
+ reporter.EmptyStateStack(0x0123456789abcdefULL, CallFrameInfo::kTerminator,
+ 0xfedcba9876543210ULL);
+}
+
+TEST_F(LulDwarfCFIReporter, ClearingCFARule) {
+ reporter.ClearingCFARule(0x0123456789abcdefULL, CallFrameInfo::kFDE,
+ 0xfedcba9876543210ULL);
+}
+class LulDwarfExpr : public Test {};
+
+class MockSummariser : public Summariser {
+ public:
+ MockSummariser() : Summariser(nullptr, 0, nullptr) {}
+ MOCK_METHOD2(Entry, void(uintptr_t, uintptr_t));
+ MOCK_METHOD0(End, void());
+ MOCK_METHOD5(Rule, void(uintptr_t, int, LExprHow, int16_t, int64_t));
+ MOCK_METHOD1(AddPfxInstr, uint32_t(PfxInstr));
+};
+
+TEST_F(LulDwarfExpr, SimpleTransliteration) {
+ MockSummariser summ;
+ ByteReader reader(ENDIANNESS_LITTLE);
+
+ CFISection section(kLittleEndian, 8);
+ section.D8(DW_OP_lit0)
+ .D8(DW_OP_lit31)
+ .D8(DW_OP_breg0 + 17)
+ .LEB128(-1234)
+ .D8(DW_OP_const4s)
+ .D32(0xFEDC9876)
+ .D8(DW_OP_deref)
+ .D8(DW_OP_and)
+ .D8(DW_OP_plus)
+ .D8(DW_OP_minus)
+ .D8(DW_OP_shl)
+ .D8(DW_OP_ge);
+ string expr;
+ bool ok = section.GetContents(&expr);
+ EXPECT_TRUE(ok);
+
+ {
+ InSequence s;
+ // required start marker
+ EXPECT_CALL(summ, AddPfxInstr(PfxInstr(PX_Start, 0)));
+ // DW_OP_lit0
+ EXPECT_CALL(summ, AddPfxInstr(PfxInstr(PX_SImm32, 0)));
+ // DW_OP_lit31
+ EXPECT_CALL(summ, AddPfxInstr(PfxInstr(PX_SImm32, 31)));
+ // DW_OP_breg17 -1234
+ EXPECT_CALL(summ, AddPfxInstr(PfxInstr(PX_DwReg, 17)));
+ EXPECT_CALL(summ, AddPfxInstr(PfxInstr(PX_SImm32, -1234)));
+ EXPECT_CALL(summ, AddPfxInstr(PfxInstr(PX_Add)));
+ // DW_OP_const4s 0xFEDC9876
+ EXPECT_CALL(summ, AddPfxInstr(PfxInstr(PX_SImm32, 0xFEDC9876)));
+ // DW_OP_deref
+ EXPECT_CALL(summ, AddPfxInstr(PfxInstr(PX_Deref)));
+ // DW_OP_and
+ EXPECT_CALL(summ, AddPfxInstr(PfxInstr(PX_And)));
+ // DW_OP_plus
+ EXPECT_CALL(summ, AddPfxInstr(PfxInstr(PX_Add)));
+ // DW_OP_minus
+ EXPECT_CALL(summ, AddPfxInstr(PfxInstr(PX_Sub)));
+ // DW_OP_shl
+ EXPECT_CALL(summ, AddPfxInstr(PfxInstr(PX_Shl)));
+ // DW_OP_ge
+ EXPECT_CALL(summ, AddPfxInstr(PfxInstr(PX_CmpGES)));
+ // required end marker
+ EXPECT_CALL(summ, AddPfxInstr(PfxInstr(PX_End)));
+ }
+
+ int32_t ix =
+ parseDwarfExpr(&summ, &reader, ImageSlice(expr), false, false, false);
+ EXPECT_TRUE(ix >= 0);
+}
+
+TEST_F(LulDwarfExpr, UnknownOpcode) {
+ MockSummariser summ;
+ ByteReader reader(ENDIANNESS_LITTLE);
+
+ CFISection section(kLittleEndian, 8);
+ section.D8(DW_OP_lo_user - 1);
+ string expr;
+ bool ok = section.GetContents(&expr);
+ EXPECT_TRUE(ok);
+
+ {
+ InSequence s;
+ // required start marker
+ EXPECT_CALL(summ, AddPfxInstr(PfxInstr(PX_Start, 0)));
+ }
+
+ int32_t ix =
+ parseDwarfExpr(&summ, &reader, ImageSlice(expr), false, false, false);
+ EXPECT_TRUE(ix == -1);
+}
+
+TEST_F(LulDwarfExpr, ExpressionOverrun) {
+ MockSummariser summ;
+ ByteReader reader(ENDIANNESS_LITTLE);
+
+ CFISection section(kLittleEndian, 8);
+ section.D8(DW_OP_const4s).D8(0x12).D8(0x34).D8(0x56);
+ string expr;
+ bool ok = section.GetContents(&expr);
+ EXPECT_TRUE(ok);
+
+ {
+ InSequence s;
+ // required start marker
+ EXPECT_CALL(summ, AddPfxInstr(PfxInstr(PX_Start, 0)));
+ // DW_OP_const4s followed by 3 (a.k.a. not enough) bytes
+ // We expect PfxInstr(PX_Simm32, not-known-for-sure-32-bit-immediate)
+ // Hence must use _ as the argument.
+ EXPECT_CALL(summ, AddPfxInstr(_));
+ }
+
+ int32_t ix =
+ parseDwarfExpr(&summ, &reader, ImageSlice(expr), false, false, false);
+ EXPECT_TRUE(ix == -1);
+}
+
+// We'll need to mention specific Dwarf registers in the EvaluatePfxExpr tests,
+// and those names are arch-specific, so a bit of macro magic is helpful.
+#if defined(GP_ARCH_arm)
+# define TESTED_REG_STRUCT_NAME r11
+# define TESTED_REG_DWARF_NAME DW_REG_ARM_R11
+#elif defined(GP_ARCH_arm64)
+# define TESTED_REG_STRUCT_NAME x29
+# define TESTED_REG_DWARF_NAME DW_REG_AARCH64_X29
+#elif defined(GP_ARCH_amd64) || defined(GP_ARCH_x86)
+# define TESTED_REG_STRUCT_NAME xbp
+# define TESTED_REG_DWARF_NAME DW_REG_INTEL_XBP
+#else
+# error "Unknown plat"
+#endif
+
+struct EvaluatePfxExprFixture {
+ // Creates:
+ // initial stack, AVMA 0x12345678, at offset 4 bytes = 0xdeadbeef
+ // initial regs, with XBP = 0x14141356
+ // initial CFA = 0x5432ABCD
+ EvaluatePfxExprFixture() {
+ // The test stack.
+ si.mStartAvma = 0x12345678;
+ si.mLen = 0;
+#define XX(_byte) \
+ do { \
+ si.mContents[si.mLen++] = (_byte); \
+ } while (0)
+ XX(0x55);
+ XX(0x55);
+ XX(0x55);
+ XX(0x55);
+ if (sizeof(void*) == 8) {
+ // le64
+ XX(0xEF);
+ XX(0xBE);
+ XX(0xAD);
+ XX(0xDE);
+ XX(0);
+ XX(0);
+ XX(0);
+ XX(0);
+ } else {
+ // le32
+ XX(0xEF);
+ XX(0xBE);
+ XX(0xAD);
+ XX(0xDE);
+ }
+ XX(0xAA);
+ XX(0xAA);
+ XX(0xAA);
+ XX(0xAA);
+#undef XX
+ // The initial CFA.
+ initialCFA = TaggedUWord(0x5432ABCD);
+ // The initial register state.
+ memset(&regs, 0, sizeof(regs));
+ regs.TESTED_REG_STRUCT_NAME = TaggedUWord(0x14141356);
+ }
+
+ StackImage si;
+ TaggedUWord initialCFA;
+ UnwindRegs regs;
+};
+
+class LulDwarfEvaluatePfxExpr : public EvaluatePfxExprFixture, public Test {};
+
+TEST_F(LulDwarfEvaluatePfxExpr, NormalEvaluation) {
+ vector<PfxInstr> instrs;
+ // Put some junk at the start of the insn sequence.
+ instrs.push_back(PfxInstr(PX_End));
+ instrs.push_back(PfxInstr(PX_End));
+
+ // Now the real sequence
+ // stack is empty
+ instrs.push_back(PfxInstr(PX_Start, 1));
+ // 0x5432ABCD
+ instrs.push_back(PfxInstr(PX_SImm32, 0x31415927));
+ // 0x5432ABCD 0x31415927
+ instrs.push_back(PfxInstr(PX_DwReg, TESTED_REG_DWARF_NAME));
+ // 0x5432ABCD 0x31415927 0x14141356
+ instrs.push_back(PfxInstr(PX_SImm32, 42));
+ // 0x5432ABCD 0x31415927 0x14141356 42
+ instrs.push_back(PfxInstr(PX_Sub));
+ // 0x5432ABCD 0x31415927 0x1414132c
+ instrs.push_back(PfxInstr(PX_Add));
+ // 0x5432ABCD 0x45556c53
+ instrs.push_back(PfxInstr(PX_SImm32, si.mStartAvma + 4));
+ // 0x5432ABCD 0x45556c53 0x1234567c
+ instrs.push_back(PfxInstr(PX_Deref));
+ // 0x5432ABCD 0x45556c53 0xdeadbeef
+ instrs.push_back(PfxInstr(PX_SImm32, 0xFE01DC23));
+ // 0x5432ABCD 0x45556c53 0xdeadbeef 0xFE01DC23
+ instrs.push_back(PfxInstr(PX_And));
+ // 0x5432ABCD 0x45556c53 0xde019c23
+ instrs.push_back(PfxInstr(PX_SImm32, 7));
+ // 0x5432ABCD 0x45556c53 0xde019c23 7
+ instrs.push_back(PfxInstr(PX_Shl));
+ // 0x5432ABCD 0x45556c53 0x6f00ce1180
+ instrs.push_back(PfxInstr(PX_SImm32, 0x7fffffff));
+ // 0x5432ABCD 0x45556c53 0x6f00ce1180 7fffffff
+ instrs.push_back(PfxInstr(PX_And));
+ // 0x5432ABCD 0x45556c53 0x00ce1180
+ instrs.push_back(PfxInstr(PX_Add));
+ // 0x5432ABCD 0x46237dd3
+ instrs.push_back(PfxInstr(PX_Sub));
+ // 0xe0f2dfa
+
+ instrs.push_back(PfxInstr(PX_End));
+
+ TaggedUWord res = EvaluatePfxExpr(2 /*offset of start insn*/, &regs,
+ initialCFA, &si, instrs);
+ EXPECT_TRUE(res.Valid());
+ EXPECT_TRUE(res.Value() == 0xe0f2dfa);
+}
+
+TEST_F(LulDwarfEvaluatePfxExpr, EmptySequence) {
+ vector<PfxInstr> instrs;
+ TaggedUWord res = EvaluatePfxExpr(0, &regs, initialCFA, &si, instrs);
+ EXPECT_FALSE(res.Valid());
+}
+
+TEST_F(LulDwarfEvaluatePfxExpr, BogusStartPoint) {
+ vector<PfxInstr> instrs;
+ instrs.push_back(PfxInstr(PX_SImm32, 42));
+ instrs.push_back(PfxInstr(PX_SImm32, 24));
+ instrs.push_back(PfxInstr(PX_SImm32, 4224));
+ TaggedUWord res = EvaluatePfxExpr(1, &regs, initialCFA, &si, instrs);
+ EXPECT_FALSE(res.Valid());
+}
+
+TEST_F(LulDwarfEvaluatePfxExpr, MissingEndMarker) {
+ vector<PfxInstr> instrs;
+ instrs.push_back(PfxInstr(PX_Start, 0));
+ instrs.push_back(PfxInstr(PX_SImm32, 24));
+ TaggedUWord res = EvaluatePfxExpr(0, &regs, initialCFA, &si, instrs);
+ EXPECT_FALSE(res.Valid());
+}
+
+TEST_F(LulDwarfEvaluatePfxExpr, StackUnderflow) {
+ vector<PfxInstr> instrs;
+ instrs.push_back(PfxInstr(PX_Start, 0));
+ instrs.push_back(PfxInstr(PX_End));
+ TaggedUWord res = EvaluatePfxExpr(0, &regs, initialCFA, &si, instrs);
+ EXPECT_FALSE(res.Valid());
+}
+
+TEST_F(LulDwarfEvaluatePfxExpr, StackNoUnderflow) {
+ vector<PfxInstr> instrs;
+ instrs.push_back(PfxInstr(PX_Start, 1 /*push the initial CFA*/));
+ instrs.push_back(PfxInstr(PX_End));
+ TaggedUWord res = EvaluatePfxExpr(0, &regs, initialCFA, &si, instrs);
+ EXPECT_TRUE(res.Valid());
+ EXPECT_TRUE(res == initialCFA);
+}
+
+TEST_F(LulDwarfEvaluatePfxExpr, StackOverflow) {
+ vector<PfxInstr> instrs;
+ instrs.push_back(PfxInstr(PX_Start, 0));
+ for (int i = 0; i < 10 + 1; i++) {
+ instrs.push_back(PfxInstr(PX_SImm32, i + 100));
+ }
+ instrs.push_back(PfxInstr(PX_End));
+ TaggedUWord res = EvaluatePfxExpr(0, &regs, initialCFA, &si, instrs);
+ EXPECT_FALSE(res.Valid());
+}
+
+TEST_F(LulDwarfEvaluatePfxExpr, StackNoOverflow) {
+ vector<PfxInstr> instrs;
+ instrs.push_back(PfxInstr(PX_Start, 0));
+ for (int i = 0; i < 10 + 0; i++) {
+ instrs.push_back(PfxInstr(PX_SImm32, i + 100));
+ }
+ instrs.push_back(PfxInstr(PX_End));
+ TaggedUWord res = EvaluatePfxExpr(0, &regs, initialCFA, &si, instrs);
+ EXPECT_TRUE(res.Valid());
+ EXPECT_TRUE(res == TaggedUWord(109));
+}
+
+TEST_F(LulDwarfEvaluatePfxExpr, OutOfRangeShl) {
+ vector<PfxInstr> instrs;
+ instrs.push_back(PfxInstr(PX_Start, 0));
+ instrs.push_back(PfxInstr(PX_SImm32, 1234));
+ instrs.push_back(PfxInstr(PX_SImm32, 5678));
+ instrs.push_back(PfxInstr(PX_Shl));
+ TaggedUWord res = EvaluatePfxExpr(0, &regs, initialCFA, &si, instrs);
+ EXPECT_TRUE(!res.Valid());
+}
+
+TEST_F(LulDwarfEvaluatePfxExpr, TestCmpGES) {
+ const int32_t argsL[6] = {0, 0, 1, -2, -1, -2};
+ const int32_t argsR[6] = {0, 1, 0, -2, -2, -1};
+ // expecting: t f t t t f = 101110 = 0x2E
+ vector<PfxInstr> instrs;
+ instrs.push_back(PfxInstr(PX_Start, 0));
+ // The "running total"
+ instrs.push_back(PfxInstr(PX_SImm32, 0));
+ for (unsigned int i = 0; i < sizeof(argsL) / sizeof(argsL[0]); i++) {
+ // Shift the "running total" at the bottom of the stack left by one bit
+ instrs.push_back(PfxInstr(PX_SImm32, 1));
+ instrs.push_back(PfxInstr(PX_Shl));
+ // Push both test args and do the comparison
+ instrs.push_back(PfxInstr(PX_SImm32, argsL[i]));
+ instrs.push_back(PfxInstr(PX_SImm32, argsR[i]));
+ instrs.push_back(PfxInstr(PX_CmpGES));
+ // Or the result into the running total
+ instrs.push_back(PfxInstr(PX_Or));
+ }
+ instrs.push_back(PfxInstr(PX_End));
+ TaggedUWord res = EvaluatePfxExpr(0, &regs, initialCFA, &si, instrs);
+ EXPECT_TRUE(res.Valid());
+ EXPECT_TRUE(res == TaggedUWord(0x2E));
+}
+
+} // namespace lul
diff --git a/tools/profiler/tests/gtest/LulTestInfrastructure.cpp b/tools/profiler/tests/gtest/LulTestInfrastructure.cpp
new file mode 100644
index 0000000000..6d49557e9c
--- /dev/null
+++ b/tools/profiler/tests/gtest/LulTestInfrastructure.cpp
@@ -0,0 +1,498 @@
+// Copyright (c) 2010, 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.
+
+// Original author: Jim Blandy <jimb@mozilla.com> <jimb@red-bean.com>
+
+// Derived from:
+// test_assembler.cc: Implementation of google_breakpad::TestAssembler.
+// See test_assembler.h for details.
+
+// Derived from:
+// cfi_assembler.cc: Implementation of google_breakpad::CFISection class.
+// See cfi_assembler.h for details.
+
+#include "LulTestInfrastructure.h"
+
+#include "LulDwarfInt.h"
+
+#include <cassert>
+
+namespace lul_test {
+namespace test_assembler {
+
+using std::back_insert_iterator;
+
+Label::Label() : value_(new Binding()) {}
+Label::Label(uint64_t value) : value_(new Binding(value)) {}
+Label::Label(const Label& label) {
+ value_ = label.value_;
+ value_->Acquire();
+}
+Label::~Label() {
+ if (value_->Release()) delete value_;
+}
+
+Label& Label::operator=(uint64_t value) {
+ value_->Set(NULL, value);
+ return *this;
+}
+
+Label& Label::operator=(const Label& label) {
+ value_->Set(label.value_, 0);
+ return *this;
+}
+
+Label Label::operator+(uint64_t addend) const {
+ Label l;
+ l.value_->Set(this->value_, addend);
+ return l;
+}
+
+Label Label::operator-(uint64_t subtrahend) const {
+ Label l;
+ l.value_->Set(this->value_, -subtrahend);
+ return l;
+}
+
+// When NDEBUG is #defined, assert doesn't evaluate its argument. This
+// means you can't simply use assert to check the return value of a
+// function with necessary side effects.
+//
+// ALWAYS_EVALUATE_AND_ASSERT(x) evaluates x regardless of whether
+// NDEBUG is #defined; when NDEBUG is not #defined, it further asserts
+// that x is true.
+#ifdef NDEBUG
+# define ALWAYS_EVALUATE_AND_ASSERT(x) x
+#else
+# define ALWAYS_EVALUATE_AND_ASSERT(x) assert(x)
+#endif
+
+uint64_t Label::operator-(const Label& label) const {
+ uint64_t offset;
+ ALWAYS_EVALUATE_AND_ASSERT(IsKnownOffsetFrom(label, &offset));
+ return offset;
+}
+
+bool Label::IsKnownConstant(uint64_t* value_p) const {
+ Binding* base;
+ uint64_t addend;
+ value_->Get(&base, &addend);
+ if (base != NULL) return false;
+ if (value_p) *value_p = addend;
+ return true;
+}
+
+bool Label::IsKnownOffsetFrom(const Label& label, uint64_t* offset_p) const {
+ Binding *label_base, *this_base;
+ uint64_t label_addend, this_addend;
+ label.value_->Get(&label_base, &label_addend);
+ value_->Get(&this_base, &this_addend);
+ // If this and label are related, Get will find their final
+ // common ancestor, regardless of how indirect the relation is. This
+ // comparison also handles the constant vs. constant case.
+ if (this_base != label_base) return false;
+ if (offset_p) *offset_p = this_addend - label_addend;
+ return true;
+}
+
+Label::Binding::Binding() : base_(this), addend_(), reference_count_(1) {}
+
+Label::Binding::Binding(uint64_t addend)
+ : base_(NULL), addend_(addend), reference_count_(1) {}
+
+Label::Binding::~Binding() {
+ assert(reference_count_ == 0);
+ if (base_ && base_ != this && base_->Release()) delete base_;
+}
+
+void Label::Binding::Set(Binding* binding, uint64_t addend) {
+ if (!base_ && !binding) {
+ // We're equating two constants. This could be okay.
+ assert(addend_ == addend);
+ } else if (!base_) {
+ // We are a known constant, but BINDING may not be, so turn the
+ // tables and try to set BINDING's value instead.
+ binding->Set(NULL, addend_ - addend);
+ } else {
+ if (binding) {
+ // Find binding's final value. Since the final value is always either
+ // completely unconstrained or a constant, never a reference to
+ // another variable (otherwise, it wouldn't be final), this
+ // guarantees we won't create cycles here, even for code like this:
+ // l = m, m = n, n = l;
+ uint64_t binding_addend;
+ binding->Get(&binding, &binding_addend);
+ addend += binding_addend;
+ }
+
+ // It seems likely that setting a binding to itself is a bug
+ // (although I can imagine this might turn out to be helpful to
+ // permit).
+ assert(binding != this);
+
+ if (base_ != this) {
+ // Set the other bindings on our chain as well. Note that this
+ // is sufficient even though binding relationships form trees:
+ // All binding operations traverse their chains to the end, and
+ // all bindings related to us share some tail of our chain, so
+ // they will see the changes we make here.
+ base_->Set(binding, addend - addend_);
+ // We're not going to use base_ any more.
+ if (base_->Release()) delete base_;
+ }
+
+ // Adopt BINDING as our base. Note that it should be correct to
+ // acquire here, after the release above, even though the usual
+ // reference-counting rules call for acquiring first, and then
+ // releasing: the self-reference assertion above should have
+ // complained if BINDING were 'this' or anywhere along our chain,
+ // so we didn't release BINDING.
+ if (binding) binding->Acquire();
+ base_ = binding;
+ addend_ = addend;
+ }
+}
+
+void Label::Binding::Get(Binding** base, uint64_t* addend) {
+ if (base_ && base_ != this) {
+ // Recurse to find the end of our reference chain (the root of our
+ // tree), and then rewrite every binding along the chain to refer
+ // to it directly, adjusting addends appropriately. (This is why
+ // this member function isn't this-const.)
+ Binding* final_base;
+ uint64_t final_addend;
+ base_->Get(&final_base, &final_addend);
+ if (final_base) final_base->Acquire();
+ if (base_->Release()) delete base_;
+ base_ = final_base;
+ addend_ += final_addend;
+ }
+ *base = base_;
+ *addend = addend_;
+}
+
+template <typename Inserter>
+static inline void InsertEndian(test_assembler::Endianness endianness,
+ size_t size, uint64_t number, Inserter dest) {
+ assert(size > 0);
+ if (endianness == kLittleEndian) {
+ for (size_t i = 0; i < size; i++) {
+ *dest++ = (char)(number & 0xff);
+ number >>= 8;
+ }
+ } else {
+ assert(endianness == kBigEndian);
+ // The loop condition is odd, but it's correct for size_t.
+ for (size_t i = size - 1; i < size; i--)
+ *dest++ = (char)((number >> (i * 8)) & 0xff);
+ }
+}
+
+Section& Section::Append(Endianness endianness, size_t size, uint64_t number) {
+ InsertEndian(endianness, size, number,
+ back_insert_iterator<string>(contents_));
+ return *this;
+}
+
+Section& Section::Append(Endianness endianness, size_t size,
+ const Label& label) {
+ // If this label's value is known, there's no reason to waste an
+ // entry in references_ on it.
+ uint64_t value;
+ if (label.IsKnownConstant(&value)) return Append(endianness, size, value);
+
+ // This will get caught when the references are resolved, but it's
+ // nicer to find out earlier.
+ assert(endianness != kUnsetEndian);
+
+ references_.push_back(Reference(contents_.size(), endianness, size, label));
+ contents_.append(size, 0);
+ return *this;
+}
+
+#define ENDIANNESS_L kLittleEndian
+#define ENDIANNESS_B kBigEndian
+#define ENDIANNESS(e) ENDIANNESS_##e
+
+#define DEFINE_SHORT_APPEND_NUMBER_ENDIAN(e, bits) \
+ Section& Section::e##bits(uint##bits##_t v) { \
+ InsertEndian(ENDIANNESS(e), bits / 8, v, \
+ back_insert_iterator<string>(contents_)); \
+ return *this; \
+ }
+
+#define DEFINE_SHORT_APPEND_LABEL_ENDIAN(e, bits) \
+ Section& Section::e##bits(const Label& v) { \
+ return Append(ENDIANNESS(e), bits / 8, v); \
+ }
+
+// Define L16, B32, and friends.
+#define DEFINE_SHORT_APPEND_ENDIAN(e, bits) \
+ DEFINE_SHORT_APPEND_NUMBER_ENDIAN(e, bits) \
+ DEFINE_SHORT_APPEND_LABEL_ENDIAN(e, bits)
+
+DEFINE_SHORT_APPEND_LABEL_ENDIAN(L, 8);
+DEFINE_SHORT_APPEND_LABEL_ENDIAN(B, 8);
+DEFINE_SHORT_APPEND_ENDIAN(L, 16);
+DEFINE_SHORT_APPEND_ENDIAN(L, 32);
+DEFINE_SHORT_APPEND_ENDIAN(L, 64);
+DEFINE_SHORT_APPEND_ENDIAN(B, 16);
+DEFINE_SHORT_APPEND_ENDIAN(B, 32);
+DEFINE_SHORT_APPEND_ENDIAN(B, 64);
+
+#define DEFINE_SHORT_APPEND_NUMBER_DEFAULT(bits) \
+ Section& Section::D##bits(uint##bits##_t v) { \
+ InsertEndian(endianness_, bits / 8, v, \
+ back_insert_iterator<string>(contents_)); \
+ return *this; \
+ }
+#define DEFINE_SHORT_APPEND_LABEL_DEFAULT(bits) \
+ Section& Section::D##bits(const Label& v) { \
+ return Append(endianness_, bits / 8, v); \
+ }
+#define DEFINE_SHORT_APPEND_DEFAULT(bits) \
+ DEFINE_SHORT_APPEND_NUMBER_DEFAULT(bits) \
+ DEFINE_SHORT_APPEND_LABEL_DEFAULT(bits)
+
+DEFINE_SHORT_APPEND_LABEL_DEFAULT(8)
+DEFINE_SHORT_APPEND_DEFAULT(16);
+DEFINE_SHORT_APPEND_DEFAULT(32);
+DEFINE_SHORT_APPEND_DEFAULT(64);
+
+Section& Section::LEB128(long long value) {
+ while (value < -0x40 || 0x3f < value) {
+ contents_ += (value & 0x7f) | 0x80;
+ if (value < 0)
+ value = (value >> 7) | ~(((unsigned long long)-1) >> 7);
+ else
+ value = (value >> 7);
+ }
+ contents_ += value & 0x7f;
+ return *this;
+}
+
+Section& Section::ULEB128(uint64_t value) {
+ while (value > 0x7f) {
+ contents_ += (value & 0x7f) | 0x80;
+ value = (value >> 7);
+ }
+ contents_ += value;
+ return *this;
+}
+
+Section& Section::Align(size_t alignment, uint8_t pad_byte) {
+ // ALIGNMENT must be a power of two.
+ assert(((alignment - 1) & alignment) == 0);
+ size_t new_size = (contents_.size() + alignment - 1) & ~(alignment - 1);
+ contents_.append(new_size - contents_.size(), pad_byte);
+ assert((contents_.size() & (alignment - 1)) == 0);
+ return *this;
+}
+
+bool Section::GetContents(string* contents) {
+ // For each label reference, find the label's value, and patch it into
+ // the section's contents.
+ for (size_t i = 0; i < references_.size(); i++) {
+ Reference& r = references_[i];
+ uint64_t value;
+ if (!r.label.IsKnownConstant(&value)) {
+ fprintf(stderr, "Undefined label #%zu at offset 0x%zx\n", i, r.offset);
+ return false;
+ }
+ assert(r.offset < contents_.size());
+ assert(contents_.size() - r.offset >= r.size);
+ InsertEndian(r.endianness, r.size, value, contents_.begin() + r.offset);
+ }
+ contents->clear();
+ std::swap(contents_, *contents);
+ references_.clear();
+ return true;
+}
+
+} // namespace test_assembler
+} // namespace lul_test
+
+namespace lul_test {
+
+CFISection& CFISection::CIEHeader(uint64_t code_alignment_factor,
+ int data_alignment_factor,
+ unsigned return_address_register,
+ uint8_t version, const string& augmentation,
+ bool dwarf64) {
+ assert(!entry_length_);
+ entry_length_ = new PendingLength();
+ in_fde_ = false;
+
+ if (dwarf64) {
+ D32(kDwarf64InitialLengthMarker);
+ D64(entry_length_->length);
+ entry_length_->start = Here();
+ D64(eh_frame_ ? kEHFrame64CIEIdentifier : kDwarf64CIEIdentifier);
+ } else {
+ D32(entry_length_->length);
+ entry_length_->start = Here();
+ D32(eh_frame_ ? kEHFrame32CIEIdentifier : kDwarf32CIEIdentifier);
+ }
+ D8(version);
+ AppendCString(augmentation);
+ ULEB128(code_alignment_factor);
+ LEB128(data_alignment_factor);
+ if (version == 1)
+ D8(return_address_register);
+ else
+ ULEB128(return_address_register);
+ return *this;
+}
+
+CFISection& CFISection::FDEHeader(Label cie_pointer, uint64_t initial_location,
+ uint64_t address_range, bool dwarf64) {
+ assert(!entry_length_);
+ entry_length_ = new PendingLength();
+ in_fde_ = true;
+ fde_start_address_ = initial_location;
+
+ if (dwarf64) {
+ D32(0xffffffff);
+ D64(entry_length_->length);
+ entry_length_->start = Here();
+ if (eh_frame_)
+ D64(Here() - cie_pointer);
+ else
+ D64(cie_pointer);
+ } else {
+ D32(entry_length_->length);
+ entry_length_->start = Here();
+ if (eh_frame_)
+ D32(Here() - cie_pointer);
+ else
+ D32(cie_pointer);
+ }
+ EncodedPointer(initial_location);
+ // The FDE length in an .eh_frame section uses the same encoding as the
+ // initial location, but ignores the base address (selected by the upper
+ // nybble of the encoding), as it's a length, not an address that can be
+ // made relative.
+ EncodedPointer(address_range, DwarfPointerEncoding(pointer_encoding_ & 0x0f));
+ return *this;
+}
+
+CFISection& CFISection::FinishEntry() {
+ assert(entry_length_);
+ Align(address_size_, lul::DW_CFA_nop);
+ entry_length_->length = Here() - entry_length_->start;
+ delete entry_length_;
+ entry_length_ = NULL;
+ in_fde_ = false;
+ return *this;
+}
+
+CFISection& CFISection::EncodedPointer(uint64_t address,
+ DwarfPointerEncoding encoding,
+ const EncodedPointerBases& bases) {
+ // Omitted data is extremely easy to emit.
+ if (encoding == lul::DW_EH_PE_omit) return *this;
+
+ // If (encoding & lul::DW_EH_PE_indirect) != 0, then we assume
+ // that ADDRESS is the address at which the pointer is stored --- in
+ // other words, that bit has no effect on how we write the pointer.
+ encoding = DwarfPointerEncoding(encoding & ~lul::DW_EH_PE_indirect);
+
+ // Find the base address to which this pointer is relative. The upper
+ // nybble of the encoding specifies this.
+ uint64_t base;
+ switch (encoding & 0xf0) {
+ case lul::DW_EH_PE_absptr:
+ base = 0;
+ break;
+ case lul::DW_EH_PE_pcrel:
+ base = bases.cfi + Size();
+ break;
+ case lul::DW_EH_PE_textrel:
+ base = bases.text;
+ break;
+ case lul::DW_EH_PE_datarel:
+ base = bases.data;
+ break;
+ case lul::DW_EH_PE_funcrel:
+ base = fde_start_address_;
+ break;
+ case lul::DW_EH_PE_aligned:
+ base = 0;
+ break;
+ default:
+ abort();
+ };
+
+ // Make ADDRESS relative. Yes, this is appropriate even for "absptr"
+ // values; see gcc/unwind-pe.h.
+ address -= base;
+
+ // Align the pointer, if required.
+ if ((encoding & 0xf0) == lul::DW_EH_PE_aligned) Align(AddressSize());
+
+ // Append ADDRESS to this section in the appropriate form. For the
+ // fixed-width forms, we don't need to differentiate between signed and
+ // unsigned encodings, because ADDRESS has already been extended to 64
+ // bits before it was passed to us.
+ switch (encoding & 0x0f) {
+ case lul::DW_EH_PE_absptr:
+ Address(address);
+ break;
+
+ case lul::DW_EH_PE_uleb128:
+ ULEB128(address);
+ break;
+
+ case lul::DW_EH_PE_sleb128:
+ LEB128(address);
+ break;
+
+ case lul::DW_EH_PE_udata2:
+ case lul::DW_EH_PE_sdata2:
+ D16(address);
+ break;
+
+ case lul::DW_EH_PE_udata4:
+ case lul::DW_EH_PE_sdata4:
+ D32(address);
+ break;
+
+ case lul::DW_EH_PE_udata8:
+ case lul::DW_EH_PE_sdata8:
+ D64(address);
+ break;
+
+ default:
+ abort();
+ }
+
+ return *this;
+};
+
+} // namespace lul_test
diff --git a/tools/profiler/tests/gtest/LulTestInfrastructure.h b/tools/profiler/tests/gtest/LulTestInfrastructure.h
new file mode 100644
index 0000000000..9faa7ca858
--- /dev/null
+++ b/tools/profiler/tests/gtest/LulTestInfrastructure.h
@@ -0,0 +1,736 @@
+// -*- mode: C++ -*-
+
+// Copyright (c) 2010, 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.
+
+// Original author: Jim Blandy <jimb@mozilla.com> <jimb@red-bean.com>
+
+// Derived from:
+// cfi_assembler.h: Define CFISection, a class for creating properly
+// (and improperly) formatted DWARF CFI data for unit tests.
+
+// Derived from:
+// test-assembler.h: interface to class for building complex binary streams.
+
+// To test the Breakpad symbol dumper and processor thoroughly, for
+// all combinations of host system and minidump processor
+// architecture, we need to be able to easily generate complex test
+// data like debugging information and minidump files.
+//
+// For example, if we want our unit tests to provide full code
+// coverage for stack walking, it may be difficult to persuade the
+// compiler to generate every possible sort of stack walking
+// information that we want to support; there are probably DWARF CFI
+// opcodes that GCC never emits. Similarly, if we want to test our
+// error handling, we will need to generate damaged minidumps or
+// debugging information that (we hope) the client or compiler will
+// never produce on its own.
+//
+// google_breakpad::TestAssembler provides a predictable and
+// (relatively) simple way to generate complex formatted data streams
+// like minidumps and CFI. Furthermore, because TestAssembler is
+// portable, developers without access to (say) Visual Studio or a
+// SPARC assembler can still work on test data for those targets.
+
+#ifndef LUL_TEST_INFRASTRUCTURE_H
+#define LUL_TEST_INFRASTRUCTURE_H
+
+#include "LulDwarfExt.h"
+
+#include <string>
+#include <vector>
+
+using std::string;
+using std::vector;
+
+namespace lul_test {
+namespace test_assembler {
+
+// A Label represents a value not yet known that we need to store in a
+// section. As long as all the labels a section refers to are defined
+// by the time we retrieve its contents as bytes, we can use undefined
+// labels freely in that section's construction.
+//
+// A label can be in one of three states:
+// - undefined,
+// - defined as the sum of some other label and a constant, or
+// - a constant.
+//
+// A label's value never changes, but it can accumulate constraints.
+// Adding labels and integers is permitted, and yields a label.
+// Subtracting a constant from a label is permitted, and also yields a
+// label. Subtracting two labels that have some relationship to each
+// other is permitted, and yields a constant.
+//
+// For example:
+//
+// Label a; // a's value is undefined
+// Label b; // b's value is undefined
+// {
+// Label c = a + 4; // okay, even though a's value is unknown
+// b = c + 4; // also okay; b is now a+8
+// }
+// Label d = b - 2; // okay; d == a+6, even though c is gone
+// d.Value(); // error: d's value is not yet known
+// d - a; // is 6, even though their values are not known
+// a = 12; // now b == 20, and d == 18
+// d.Value(); // 18: no longer an error
+// b.Value(); // 20
+// d = 10; // error: d is already defined.
+//
+// Label objects' lifetimes are unconstrained: notice that, in the
+// above example, even though a and b are only related through c, and
+// c goes out of scope, the assignment to a sets b's value as well. In
+// particular, it's not necessary to ensure that a Label lives beyond
+// Sections that refer to it.
+class Label {
+ public:
+ Label(); // An undefined label.
+ explicit Label(uint64_t value); // A label with a fixed value
+ Label(const Label& value); // A label equal to another.
+ ~Label();
+
+ Label& operator=(uint64_t value);
+ Label& operator=(const Label& value);
+ Label operator+(uint64_t addend) const;
+ Label operator-(uint64_t subtrahend) const;
+ uint64_t operator-(const Label& subtrahend) const;
+
+ // We could also provide == and != that work on undefined, but
+ // related, labels.
+
+ // Return true if this label's value is known. If VALUE_P is given,
+ // set *VALUE_P to the known value if returning true.
+ bool IsKnownConstant(uint64_t* value_p = NULL) const;
+
+ // Return true if the offset from LABEL to this label is known. If
+ // OFFSET_P is given, set *OFFSET_P to the offset when returning true.
+ //
+ // You can think of l.KnownOffsetFrom(m, &d) as being like 'd = l-m',
+ // except that it also returns a value indicating whether the
+ // subtraction is possible given what we currently know of l and m.
+ // It can be possible even if we don't know l and m's values. For
+ // example:
+ //
+ // Label l, m;
+ // m = l + 10;
+ // l.IsKnownConstant(); // false
+ // m.IsKnownConstant(); // false
+ // uint64_t d;
+ // l.IsKnownOffsetFrom(m, &d); // true, and sets d to -10.
+ // l-m // -10
+ // m-l // 10
+ // m.Value() // error: m's value is not known
+ bool IsKnownOffsetFrom(const Label& label, uint64_t* offset_p = NULL) const;
+
+ private:
+ // A label's value, or if that is not yet known, how the value is
+ // related to other labels' values. A binding may be:
+ // - a known constant,
+ // - constrained to be equal to some other binding plus a constant, or
+ // - unconstrained, and free to take on any value.
+ //
+ // Many labels may point to a single binding, and each binding may
+ // refer to another, so bindings and labels form trees whose leaves
+ // are labels, whose interior nodes (and roots) are bindings, and
+ // where links point from children to parents. Bindings are
+ // reference counted, allowing labels to be lightweight, copyable,
+ // assignable, placed in containers, and so on.
+ class Binding {
+ public:
+ Binding();
+ explicit Binding(uint64_t addend);
+ ~Binding();
+
+ // Increment our reference count.
+ void Acquire() { reference_count_++; };
+ // Decrement our reference count, and return true if it is zero.
+ bool Release() { return --reference_count_ == 0; }
+
+ // Set this binding to be equal to BINDING + ADDEND. If BINDING is
+ // NULL, then set this binding to the known constant ADDEND.
+ // Update every binding on this binding's chain to point directly
+ // to BINDING, or to be a constant, with addends adjusted
+ // appropriately.
+ void Set(Binding* binding, uint64_t value);
+
+ // Return what we know about the value of this binding.
+ // - If this binding's value is a known constant, set BASE to
+ // NULL, and set ADDEND to its value.
+ // - If this binding is not a known constant but related to other
+ // bindings, set BASE to the binding at the end of the relation
+ // chain (which will always be unconstrained), and set ADDEND to the
+ // value to add to that binding's value to get this binding's
+ // value.
+ // - If this binding is unconstrained, set BASE to this, and leave
+ // ADDEND unchanged.
+ void Get(Binding** base, uint64_t* addend);
+
+ private:
+ // There are three cases:
+ //
+ // - A binding representing a known constant value has base_ NULL,
+ // and addend_ equal to the value.
+ //
+ // - A binding representing a completely unconstrained value has
+ // base_ pointing to this; addend_ is unused.
+ //
+ // - A binding whose value is related to some other binding's
+ // value has base_ pointing to that other binding, and addend_
+ // set to the amount to add to that binding's value to get this
+ // binding's value. We only represent relationships of the form
+ // x = y+c.
+ //
+ // Thus, the bind_ links form a chain terminating in either a
+ // known constant value or a completely unconstrained value. Most
+ // operations on bindings do path compression: they change every
+ // binding on the chain to point directly to the final value,
+ // adjusting addends as appropriate.
+ Binding* base_;
+ uint64_t addend_;
+
+ // The number of Labels and Bindings pointing to this binding.
+ // (When a binding points to itself, indicating a completely
+ // unconstrained binding, that doesn't count as a reference.)
+ int reference_count_;
+ };
+
+ // This label's value.
+ Binding* value_;
+};
+
+// Conventions for representing larger numbers as sequences of bytes.
+enum Endianness {
+ kBigEndian, // Big-endian: the most significant byte comes first.
+ kLittleEndian, // Little-endian: the least significant byte comes first.
+ kUnsetEndian, // used internally
+};
+
+// A section is a sequence of bytes, constructed by appending bytes
+// to the end. Sections have a convenient and flexible set of member
+// functions for appending data in various formats: big-endian and
+// little-endian signed and unsigned values of different sizes;
+// LEB128 and ULEB128 values (see below), and raw blocks of bytes.
+//
+// If you need to append a value to a section that is not convenient
+// to compute immediately, you can create a label, append the
+// label's value to the section, and then set the label's value
+// later, when it's convenient to do so. Once a label's value is
+// known, the section class takes care of updating all previously
+// appended references to it.
+//
+// Once all the labels to which a section refers have had their
+// values determined, you can get a copy of the section's contents
+// as a string.
+//
+// Note that there is no specified "start of section" label. This is
+// because there are typically several different meanings for "the
+// start of a section": the offset of the section within an object
+// file, the address in memory at which the section's content appear,
+// and so on. It's up to the code that uses the Section class to
+// keep track of these explicitly, as they depend on the application.
+class Section {
+ public:
+ explicit Section(Endianness endianness = kUnsetEndian)
+ : endianness_(endianness){};
+
+ // A base class destructor should be either public and virtual,
+ // or protected and nonvirtual.
+ virtual ~Section(){};
+
+ // Return the default endianness of this section.
+ Endianness endianness() const { return endianness_; }
+
+ // Append the SIZE bytes at DATA to the end of this section. Return
+ // a reference to this section.
+ Section& Append(const string& data) {
+ contents_.append(data);
+ return *this;
+ };
+
+ // Append data from SLICE to the end of this section. Return
+ // a reference to this section.
+ Section& Append(const lul::ImageSlice& slice) {
+ for (size_t i = 0; i < slice.length_; i++) {
+ contents_.append(1, slice.start_[i]);
+ }
+ return *this;
+ }
+
+ // Append data from CSTRING to the end of this section. The terminating
+ // zero is not included. Return a reference to this section.
+ Section& Append(const char* cstring) {
+ for (size_t i = 0; cstring[i] != '\0'; i++) {
+ contents_.append(1, cstring[i]);
+ }
+ return *this;
+ }
+
+ // Append SIZE copies of BYTE to the end of this section. Return a
+ // reference to this section.
+ Section& Append(size_t size, uint8_t byte) {
+ contents_.append(size, (char)byte);
+ return *this;
+ }
+
+ // Append NUMBER to this section. ENDIANNESS is the endianness to
+ // use to write the number. SIZE is the length of the number in
+ // bytes. Return a reference to this section.
+ Section& Append(Endianness endianness, size_t size, uint64_t number);
+ Section& Append(Endianness endianness, size_t size, const Label& label);
+
+ // Append SECTION to the end of this section. The labels SECTION
+ // refers to need not be defined yet.
+ //
+ // Note that this has no effect on any Labels' values, or on
+ // SECTION. If placing SECTION within 'this' provides new
+ // constraints on existing labels' values, then it's up to the
+ // caller to fiddle with those labels as needed.
+ Section& Append(const Section& section);
+
+ // Append the contents of DATA as a series of bytes terminated by
+ // a NULL character.
+ Section& AppendCString(const string& data) {
+ Append(data);
+ contents_ += '\0';
+ return *this;
+ }
+
+ // Append VALUE or LABEL to this section, with the given bit width and
+ // endianness. Return a reference to this section.
+ //
+ // The names of these functions have the form <ENDIANNESS><BITWIDTH>:
+ // <ENDIANNESS> is either 'L' (little-endian, least significant byte first),
+ // 'B' (big-endian, most significant byte first), or
+ // 'D' (default, the section's default endianness)
+ // <BITWIDTH> is 8, 16, 32, or 64.
+ //
+ // Since endianness doesn't matter for a single byte, all the
+ // <BITWIDTH>=8 functions are equivalent.
+ //
+ // These can be used to write both signed and unsigned values, as
+ // the compiler will properly sign-extend a signed value before
+ // passing it to the function, at which point the function's
+ // behavior is the same either way.
+ Section& L8(uint8_t value) {
+ contents_ += value;
+ return *this;
+ }
+ Section& B8(uint8_t value) {
+ contents_ += value;
+ return *this;
+ }
+ Section& D8(uint8_t value) {
+ contents_ += value;
+ return *this;
+ }
+ Section &L16(uint16_t), &L32(uint32_t), &L64(uint64_t), &B16(uint16_t),
+ &B32(uint32_t), &B64(uint64_t), &D16(uint16_t), &D32(uint32_t),
+ &D64(uint64_t);
+ Section &L8(const Label& label), &L16(const Label& label),
+ &L32(const Label& label), &L64(const Label& label),
+ &B8(const Label& label), &B16(const Label& label),
+ &B32(const Label& label), &B64(const Label& label),
+ &D8(const Label& label), &D16(const Label& label),
+ &D32(const Label& label), &D64(const Label& label);
+
+ // Append VALUE in a signed LEB128 (Little-Endian Base 128) form.
+ //
+ // The signed LEB128 representation of an integer N is a variable
+ // number of bytes:
+ //
+ // - If N is between -0x40 and 0x3f, then its signed LEB128
+ // representation is a single byte whose value is N.
+ //
+ // - Otherwise, its signed LEB128 representation is (N & 0x7f) |
+ // 0x80, followed by the signed LEB128 representation of N / 128,
+ // rounded towards negative infinity.
+ //
+ // In other words, we break VALUE into groups of seven bits, put
+ // them in little-endian order, and then write them as eight-bit
+ // bytes with the high bit on all but the last.
+ //
+ // Note that VALUE cannot be a Label (we would have to implement
+ // relaxation).
+ Section& LEB128(long long value);
+
+ // Append VALUE in unsigned LEB128 (Little-Endian Base 128) form.
+ //
+ // The unsigned LEB128 representation of an integer N is a variable
+ // number of bytes:
+ //
+ // - If N is between 0 and 0x7f, then its unsigned LEB128
+ // representation is a single byte whose value is N.
+ //
+ // - Otherwise, its unsigned LEB128 representation is (N & 0x7f) |
+ // 0x80, followed by the unsigned LEB128 representation of N /
+ // 128, rounded towards negative infinity.
+ //
+ // Note that VALUE cannot be a Label (we would have to implement
+ // relaxation).
+ Section& ULEB128(uint64_t value);
+
+ // Jump to the next location aligned on an ALIGNMENT-byte boundary,
+ // relative to the start of the section. Fill the gap with PAD_BYTE.
+ // ALIGNMENT must be a power of two. Return a reference to this
+ // section.
+ Section& Align(size_t alignment, uint8_t pad_byte = 0);
+
+ // Return the current size of the section.
+ size_t Size() const { return contents_.size(); }
+
+ // Return a label representing the start of the section.
+ //
+ // It is up to the user whether this label represents the section's
+ // position in an object file, the section's address in memory, or
+ // what have you; some applications may need both, in which case
+ // this simple-minded interface won't be enough. This class only
+ // provides a single start label, for use with the Here and Mark
+ // member functions.
+ //
+ // Ideally, we'd provide this in a subclass that actually knows more
+ // about the application at hand and can provide an appropriate
+ // collection of start labels. But then the appending member
+ // functions like Append and D32 would return a reference to the
+ // base class, not the derived class, and the chaining won't work.
+ // Since the only value here is in pretty notation, that's a fatal
+ // flaw.
+ Label start() const { return start_; }
+
+ // Return a label representing the point at which the next Appended
+ // item will appear in the section, relative to start().
+ Label Here() const { return start_ + Size(); }
+
+ // Set *LABEL to Here, and return a reference to this section.
+ Section& Mark(Label* label) {
+ *label = Here();
+ return *this;
+ }
+
+ // If there are no undefined label references left in this
+ // section, set CONTENTS to the contents of this section, as a
+ // string, and clear this section. Return true on success, or false
+ // if there were still undefined labels.
+ bool GetContents(string* contents);
+
+ private:
+ // Used internally. A reference to a label's value.
+ struct Reference {
+ Reference(size_t set_offset, Endianness set_endianness, size_t set_size,
+ const Label& set_label)
+ : offset(set_offset),
+ endianness(set_endianness),
+ size(set_size),
+ label(set_label) {}
+
+ // The offset of the reference within the section.
+ size_t offset;
+
+ // The endianness of the reference.
+ Endianness endianness;
+
+ // The size of the reference.
+ size_t size;
+
+ // The label to which this is a reference.
+ Label label;
+ };
+
+ // The default endianness of this section.
+ Endianness endianness_;
+
+ // The contents of the section.
+ string contents_;
+
+ // References to labels within those contents.
+ vector<Reference> references_;
+
+ // A label referring to the beginning of the section.
+ Label start_;
+};
+
+} // namespace test_assembler
+} // namespace lul_test
+
+namespace lul_test {
+
+using lul::DwarfPointerEncoding;
+using lul_test::test_assembler::Endianness;
+using lul_test::test_assembler::Label;
+using lul_test::test_assembler::Section;
+
+class CFISection : public Section {
+ public:
+ // CFI augmentation strings beginning with 'z', defined by the
+ // Linux/IA-64 C++ ABI, can specify interesting encodings for
+ // addresses appearing in FDE headers and call frame instructions (and
+ // for additional fields whose presence the augmentation string
+ // specifies). In particular, pointers can be specified to be relative
+ // to various base address: the start of the .text section, the
+ // location holding the address itself, and so on. These allow the
+ // frame data to be position-independent even when they live in
+ // write-protected pages. These variants are specified at the
+ // following two URLs:
+ //
+ // http://refspecs.linux-foundation.org/LSB_4.0.0/LSB-Core-generic/LSB-Core-generic/dwarfext.html
+ // http://refspecs.linux-foundation.org/LSB_4.0.0/LSB-Core-generic/LSB-Core-generic/ehframechpt.html
+ //
+ // CFISection leaves the production of well-formed 'z'-augmented CIEs and
+ // FDEs to the user, but does provide EncodedPointer, to emit
+ // properly-encoded addresses for a given pointer encoding.
+ // EncodedPointer uses an instance of this structure to find the base
+ // addresses it should use; you can establish a default for all encoded
+ // pointers appended to this section with SetEncodedPointerBases.
+ struct EncodedPointerBases {
+ EncodedPointerBases() : cfi(), text(), data() {}
+
+ // The starting address of this CFI section in memory, for
+ // DW_EH_PE_pcrel. DW_EH_PE_pcrel pointers may only be used in data
+ // that has is loaded into the program's address space.
+ uint64_t cfi;
+
+ // The starting address of this file's .text section, for DW_EH_PE_textrel.
+ uint64_t text;
+
+ // The starting address of this file's .got or .eh_frame_hdr section,
+ // for DW_EH_PE_datarel.
+ uint64_t data;
+ };
+
+ // Create a CFISection whose endianness is ENDIANNESS, and where
+ // machine addresses are ADDRESS_SIZE bytes long. If EH_FRAME is
+ // true, use the .eh_frame format, as described by the Linux
+ // Standards Base Core Specification, instead of the DWARF CFI
+ // format.
+ CFISection(Endianness endianness, size_t address_size, bool eh_frame = false)
+ : Section(endianness),
+ address_size_(address_size),
+ eh_frame_(eh_frame),
+ pointer_encoding_(lul::DW_EH_PE_absptr),
+ encoded_pointer_bases_(),
+ entry_length_(NULL),
+ in_fde_(false) {
+ // The 'start', 'Here', and 'Mark' members of a CFISection all refer
+ // to section offsets.
+ start() = 0;
+ }
+
+ // Return this CFISection's address size.
+ size_t AddressSize() const { return address_size_; }
+
+ // Return true if this CFISection uses the .eh_frame format, or
+ // false if it contains ordinary DWARF CFI data.
+ bool ContainsEHFrame() const { return eh_frame_; }
+
+ // Use ENCODING for pointers in calls to FDEHeader and EncodedPointer.
+ void SetPointerEncoding(DwarfPointerEncoding encoding) {
+ pointer_encoding_ = encoding;
+ }
+
+ // Use the addresses in BASES as the base addresses for encoded
+ // pointers in subsequent calls to FDEHeader or EncodedPointer.
+ // This function makes a copy of BASES.
+ void SetEncodedPointerBases(const EncodedPointerBases& bases) {
+ encoded_pointer_bases_ = bases;
+ }
+
+ // Append a Common Information Entry header to this section with the
+ // given values. If dwarf64 is true, use the 64-bit DWARF initial
+ // length format for the CIE's initial length. Return a reference to
+ // this section. You should call FinishEntry after writing the last
+ // instruction for the CIE.
+ //
+ // Before calling this function, you will typically want to use Mark
+ // or Here to make a label to pass to FDEHeader that refers to this
+ // CIE's position in the section.
+ CFISection& CIEHeader(uint64_t code_alignment_factor,
+ int data_alignment_factor,
+ unsigned return_address_register, uint8_t version = 3,
+ const string& augmentation = "", bool dwarf64 = false);
+
+ // Append a Frame Description Entry header to this section with the
+ // given values. If dwarf64 is true, use the 64-bit DWARF initial
+ // length format for the CIE's initial length. Return a reference to
+ // this section. You should call FinishEntry after writing the last
+ // instruction for the CIE.
+ //
+ // This function doesn't support entries that are longer than
+ // 0xffffff00 bytes. (The "initial length" is always a 32-bit
+ // value.) Nor does it support .debug_frame sections longer than
+ // 0xffffff00 bytes.
+ CFISection& FDEHeader(Label cie_pointer, uint64_t initial_location,
+ uint64_t address_range, bool dwarf64 = false);
+
+ // Note the current position as the end of the last CIE or FDE we
+ // started, after padding with DW_CFA_nops for alignment. This
+ // defines the label representing the entry's length, cited in the
+ // entry's header. Return a reference to this section.
+ CFISection& FinishEntry();
+
+ // Append the contents of BLOCK as a DW_FORM_block value: an
+ // unsigned LEB128 length, followed by that many bytes of data.
+ CFISection& Block(const lul::ImageSlice& block) {
+ ULEB128(block.length_);
+ Append(block);
+ return *this;
+ }
+
+ // Append data from CSTRING as a DW_FORM_block value: an unsigned LEB128
+ // length, followed by that many bytes of data. The terminating zero is not
+ // included.
+ CFISection& Block(const char* cstring) {
+ ULEB128(strlen(cstring));
+ Append(cstring);
+ return *this;
+ }
+
+ // Append ADDRESS to this section, in the appropriate size and
+ // endianness. Return a reference to this section.
+ CFISection& Address(uint64_t address) {
+ Section::Append(endianness(), address_size_, address);
+ return *this;
+ }
+
+ // Append ADDRESS to this section, using ENCODING and BASES. ENCODING
+ // defaults to this section's default encoding, established by
+ // SetPointerEncoding. BASES defaults to this section's bases, set by
+ // SetEncodedPointerBases. If the DW_EH_PE_indirect bit is set in the
+ // encoding, assume that ADDRESS is where the true address is stored.
+ // Return a reference to this section.
+ //
+ // (C++ doesn't let me use default arguments here, because I want to
+ // refer to members of *this in the default argument expression.)
+ CFISection& EncodedPointer(uint64_t address) {
+ return EncodedPointer(address, pointer_encoding_, encoded_pointer_bases_);
+ }
+ CFISection& EncodedPointer(uint64_t address, DwarfPointerEncoding encoding) {
+ return EncodedPointer(address, encoding, encoded_pointer_bases_);
+ }
+ CFISection& EncodedPointer(uint64_t address, DwarfPointerEncoding encoding,
+ const EncodedPointerBases& bases);
+
+ // Restate some member functions, to keep chaining working nicely.
+ CFISection& Mark(Label* label) {
+ Section::Mark(label);
+ return *this;
+ }
+ CFISection& D8(uint8_t v) {
+ Section::D8(v);
+ return *this;
+ }
+ CFISection& D16(uint16_t v) {
+ Section::D16(v);
+ return *this;
+ }
+ CFISection& D16(Label v) {
+ Section::D16(v);
+ return *this;
+ }
+ CFISection& D32(uint32_t v) {
+ Section::D32(v);
+ return *this;
+ }
+ CFISection& D32(const Label& v) {
+ Section::D32(v);
+ return *this;
+ }
+ CFISection& D64(uint64_t v) {
+ Section::D64(v);
+ return *this;
+ }
+ CFISection& D64(const Label& v) {
+ Section::D64(v);
+ return *this;
+ }
+ CFISection& LEB128(long long v) {
+ Section::LEB128(v);
+ return *this;
+ }
+ CFISection& ULEB128(uint64_t v) {
+ Section::ULEB128(v);
+ return *this;
+ }
+
+ private:
+ // A length value that we've appended to the section, but is not yet
+ // known. LENGTH is the appended value; START is a label referring
+ // to the start of the data whose length was cited.
+ struct PendingLength {
+ Label length;
+ Label start;
+ };
+
+ // Constants used in CFI/.eh_frame data:
+
+ // If the first four bytes of an "initial length" are this constant, then
+ // the data uses the 64-bit DWARF format, and the length itself is the
+ // subsequent eight bytes.
+ static const uint32_t kDwarf64InitialLengthMarker = 0xffffffffU;
+
+ // The CIE identifier for 32- and 64-bit DWARF CFI and .eh_frame data.
+ static const uint32_t kDwarf32CIEIdentifier = ~(uint32_t)0;
+ static const uint64_t kDwarf64CIEIdentifier = ~(uint64_t)0;
+ static const uint32_t kEHFrame32CIEIdentifier = 0;
+ static const uint64_t kEHFrame64CIEIdentifier = 0;
+
+ // The size of a machine address for the data in this section.
+ size_t address_size_;
+
+ // If true, we are generating a Linux .eh_frame section, instead of
+ // a standard DWARF .debug_frame section.
+ bool eh_frame_;
+
+ // The encoding to use for FDE pointers.
+ DwarfPointerEncoding pointer_encoding_;
+
+ // The base addresses to use when emitting encoded pointers.
+ EncodedPointerBases encoded_pointer_bases_;
+
+ // The length value for the current entry.
+ //
+ // Oddly, this must be dynamically allocated. Labels never get new
+ // values; they only acquire constraints on the value they already
+ // have, or assert if you assign them something incompatible. So
+ // each header needs truly fresh Label objects to cite in their
+ // headers and track their positions. The alternative is explicit
+ // destructor invocation and a placement new. Ick.
+ PendingLength* entry_length_;
+
+ // True if we are currently emitting an FDE --- that is, we have
+ // called FDEHeader but have not yet called FinishEntry.
+ bool in_fde_;
+
+ // If in_fde_ is true, this is its starting address. We use this for
+ // emitting DW_EH_PE_funcrel pointers.
+ uint64_t fde_start_address_;
+};
+
+} // namespace lul_test
+
+#endif // LUL_TEST_INFRASTRUCTURE_H
diff --git a/tools/profiler/tests/gtest/ThreadProfileTest.cpp b/tools/profiler/tests/gtest/ThreadProfileTest.cpp
new file mode 100644
index 0000000000..b8a15c39b2
--- /dev/null
+++ b/tools/profiler/tests/gtest/ThreadProfileTest.cpp
@@ -0,0 +1,60 @@
+
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifdef MOZ_GECKO_PROFILER
+
+# include "ProfileBuffer.h"
+
+# include "mozilla/PowerOfTwo.h"
+# include "mozilla/ProfileBufferChunkManagerWithLocalLimit.h"
+# include "mozilla/ProfileChunkedBuffer.h"
+
+# include "gtest/gtest.h"
+
+// Make sure we can record one entry and read it
+TEST(ThreadProfile, InsertOneEntry)
+{
+ mozilla::ProfileBufferChunkManagerWithLocalLimit chunkManager(
+ 2 * (1 + uint32_t(sizeof(ProfileBufferEntry))) * 4,
+ 2 * (1 + uint32_t(sizeof(ProfileBufferEntry))));
+ mozilla::ProfileChunkedBuffer profileChunkedBuffer(
+ mozilla::ProfileChunkedBuffer::ThreadSafety::WithMutex, chunkManager);
+ auto pb = mozilla::MakeUnique<ProfileBuffer>(profileChunkedBuffer);
+ pb->AddEntry(ProfileBufferEntry::Time(123.1));
+ ProfileBufferEntry entry = pb->GetEntry(pb->BufferRangeStart());
+ ASSERT_TRUE(entry.IsTime());
+ ASSERT_EQ(123.1, entry.GetDouble());
+}
+
+// See if we can insert some entries
+TEST(ThreadProfile, InsertEntriesNoWrap)
+{
+ mozilla::ProfileBufferChunkManagerWithLocalLimit chunkManager(
+ 100 * (1 + uint32_t(sizeof(ProfileBufferEntry))),
+ 100 * (1 + uint32_t(sizeof(ProfileBufferEntry))) / 4);
+ mozilla::ProfileChunkedBuffer profileChunkedBuffer(
+ mozilla::ProfileChunkedBuffer::ThreadSafety::WithMutex, chunkManager);
+ auto pb = mozilla::MakeUnique<ProfileBuffer>(profileChunkedBuffer);
+ const int test_size = 50;
+ for (int i = 0; i < test_size; i++) {
+ pb->AddEntry(ProfileBufferEntry::Time(i));
+ }
+ int times = 0;
+ uint64_t readPos = pb->BufferRangeStart();
+ while (readPos != pb->BufferRangeEnd()) {
+ ProfileBufferEntry entry = pb->GetEntry(readPos);
+ readPos++;
+ if (entry.GetKind() == ProfileBufferEntry::Kind::INVALID) {
+ continue;
+ }
+ ASSERT_TRUE(entry.IsTime());
+ ASSERT_EQ(times, entry.GetDouble());
+ times++;
+ }
+ ASSERT_EQ(test_size, times);
+}
+
+#endif // MOZ_GECKO_PROFILER
diff --git a/tools/profiler/tests/gtest/moz.build b/tools/profiler/tests/gtest/moz.build
new file mode 100644
index 0000000000..4eb1fef762
--- /dev/null
+++ b/tools/profiler/tests/gtest/moz.build
@@ -0,0 +1,45 @@
+# -*- Mode: python; indent-tabs-mode: nil; tab-width: 40 -*-
+# vim: set filetype=python:
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, you can obtain one at http://mozilla.org/MPL/2.0/.
+
+if (
+ CONFIG["MOZ_GECKO_PROFILER"]
+ and CONFIG["OS_TARGET"] in ("Android", "Linux")
+ and CONFIG["CPU_ARCH"]
+ in (
+ "arm",
+ "aarch64",
+ "x86",
+ "x86_64",
+ )
+):
+ UNIFIED_SOURCES += [
+ "LulTest.cpp",
+ "LulTestDwarf.cpp",
+ "LulTestInfrastructure.cpp",
+ ]
+
+LOCAL_INCLUDES += [
+ "/netwerk/base",
+ "/netwerk/protocol/http",
+ "/toolkit/components/jsoncpp/include",
+ "/tools/profiler/core",
+ "/tools/profiler/gecko",
+ "/tools/profiler/lul",
+]
+
+if CONFIG["OS_TARGET"] != "Android":
+ UNIFIED_SOURCES += [
+ "GeckoProfiler.cpp",
+ "ThreadProfileTest.cpp",
+ ]
+
+USE_LIBS += [
+ "jsoncpp",
+]
+
+include("/ipc/chromium/chromium-config.mozbuild")
+
+FINAL_LIBRARY = "xul-gtest"
diff --git a/tools/profiler/tests/shared-head.js b/tools/profiler/tests/shared-head.js
new file mode 100644
index 0000000000..d1b2f6868a
--- /dev/null
+++ b/tools/profiler/tests/shared-head.js
@@ -0,0 +1,591 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+/* globals Assert */
+/* globals info */
+
+/**
+ * This file contains utilities that can be shared between xpcshell tests and mochitests.
+ */
+
+// The marker phases.
+const INSTANT = 0;
+const INTERVAL = 1;
+const INTERVAL_START = 2;
+const INTERVAL_END = 3;
+
+// This Services declaration may shadow another from head.js, so define it as
+// a var rather than a const.
+
+const defaultSettings = {
+ entries: 8 * 1024 * 1024, // 8M entries = 64MB
+ interval: 1, // ms
+ features: [],
+ threads: ["GeckoMain"],
+};
+
+// Effectively `async`: Start the profiler and return the `startProfiler`
+// promise that will get resolved when all child process have started their own
+// profiler.
+async function startProfiler(callersSettings) {
+ if (Services.profiler.IsActive()) {
+ Assert.ok(
+ Services.env.exists("MOZ_PROFILER_STARTUP"),
+ "The profiler is active at the begining of the test, " +
+ "the MOZ_PROFILER_STARTUP environment variable should be set."
+ );
+ if (Services.env.exists("MOZ_PROFILER_STARTUP")) {
+ // If the startup profiling environment variable exists, it is likely
+ // that tests are being profiled.
+ // Stop the profiler before starting profiler tests.
+ info(
+ "This test starts and stops the profiler and is not compatible " +
+ "with the use of MOZ_PROFILER_STARTUP. " +
+ "Stopping the profiler before starting the test."
+ );
+ await Services.profiler.StopProfiler();
+ } else {
+ throw new Error(
+ "The profiler must not be active before starting it in a test."
+ );
+ }
+ }
+ const settings = Object.assign({}, defaultSettings, callersSettings);
+ return Services.profiler.StartProfiler(
+ settings.entries,
+ settings.interval,
+ settings.features,
+ settings.threads,
+ 0,
+ settings.duration
+ );
+}
+
+function startProfilerForMarkerTests() {
+ return startProfiler({
+ features: ["nostacksampling", "js"],
+ threads: ["GeckoMain", "DOM Worker"],
+ });
+}
+
+/**
+ * This is a helper function be able to run `await wait(500)`. Unfortunately
+ * this is needed as the act of collecting functions relies on the periodic
+ * sampling of the threads. See:
+ * https://bugzilla.mozilla.org/show_bug.cgi?id=1529053
+ *
+ * @param {number} time
+ * @returns {Promise}
+ */
+function wait(time) {
+ return new Promise(resolve => {
+ // eslint-disable-next-line mozilla/no-arbitrary-setTimeout
+ setTimeout(resolve, time);
+ });
+}
+
+/**
+ * Get the payloads of a type recursively, including from all subprocesses.
+ *
+ * @param {Object} profile The gecko profile.
+ * @param {string} type The marker payload type, e.g. "DiskIO".
+ * @param {Array} payloadTarget The recursive list of payloads.
+ * @return {Array} The final payloads.
+ */
+function getPayloadsOfTypeFromAllThreads(profile, type, payloadTarget = []) {
+ for (const { markers } of profile.threads) {
+ for (const markerTuple of markers.data) {
+ const payload = markerTuple[markers.schema.data];
+ if (payload && payload.type === type) {
+ payloadTarget.push(payload);
+ }
+ }
+ }
+
+ for (const subProcess of profile.processes) {
+ getPayloadsOfTypeFromAllThreads(subProcess, type, payloadTarget);
+ }
+
+ return payloadTarget;
+}
+
+/**
+ * Get the payloads of a type from a single thread.
+ *
+ * @param {Object} thread The thread from a profile.
+ * @param {string} type The marker payload type, e.g. "DiskIO".
+ * @return {Array} The payloads.
+ */
+function getPayloadsOfType(thread, type) {
+ const { markers } = thread;
+ const results = [];
+ for (const markerTuple of markers.data) {
+ const payload = markerTuple[markers.schema.data];
+ if (payload && payload.type === type) {
+ results.push(payload);
+ }
+ }
+ return results;
+}
+
+/**
+ * Applies the marker schema to create individual objects for each marker
+ *
+ * @param {Object} thread The thread from a profile.
+ * @return {InflatedMarker[]} The markers.
+ */
+function getInflatedMarkerData(thread) {
+ const { markers, stringTable } = thread;
+ return markers.data.map(markerTuple => {
+ const marker = {};
+ for (const [key, tupleIndex] of Object.entries(markers.schema)) {
+ marker[key] = markerTuple[tupleIndex];
+ if (key === "name") {
+ // Use the string from the string table.
+ marker[key] = stringTable[marker[key]];
+ }
+ }
+ return marker;
+ });
+}
+
+/**
+ * Applies the marker schema to create individual objects for each marker, then
+ * keeps only the network markers that match the profiler tests.
+ *
+ * @param {Object} thread The thread from a profile.
+ * @return {InflatedMarker[]} The filtered network markers.
+ */
+function getInflatedNetworkMarkers(thread) {
+ const markers = getInflatedMarkerData(thread);
+ return markers.filter(
+ m =>
+ m.data &&
+ m.data.type === "Network" &&
+ // We filter out network markers that aren't related to the test, to
+ // avoid intermittents.
+ m.data.URI.includes("/tools/profiler/")
+ );
+}
+
+/**
+ * From a list of network markers, this returns pairs of start/stop markers.
+ * If a stop marker can't be found for a start marker, this will return an array
+ * of only 1 element.
+ *
+ * @param {InflatedMarker[]} networkMarkers Network markers
+ * @return {InflatedMarker[][]} Pairs of network markers
+ */
+function getPairsOfNetworkMarkers(allNetworkMarkers) {
+ // For each 'start' marker we want to find the next 'stop' or 'redirect'
+ // marker with the same id.
+ const result = [];
+ const mapOfStartMarkers = new Map(); // marker id -> id in result array
+ for (const marker of allNetworkMarkers) {
+ const { data } = marker;
+ if (data.status === "STATUS_START") {
+ if (mapOfStartMarkers.has(data.id)) {
+ const previousMarker = result[mapOfStartMarkers.get(data.id)][0];
+ Assert.ok(
+ false,
+ `We found 2 start markers with the same id ${data.id}, without end marker in-between.` +
+ `The first marker has URI ${previousMarker.data.URI}, the second marker has URI ${data.URI}.` +
+ ` This should not happen.`
+ );
+ continue;
+ }
+
+ mapOfStartMarkers.set(data.id, result.length);
+ result.push([marker]);
+ } else {
+ // STOP or REDIRECT
+ if (!mapOfStartMarkers.has(data.id)) {
+ Assert.ok(
+ false,
+ `We found an end marker without a start marker (id: ${data.id}, URI: ${data.URI}). This should not happen.`
+ );
+ continue;
+ }
+ result[mapOfStartMarkers.get(data.id)].push(marker);
+ mapOfStartMarkers.delete(data.id);
+ }
+ }
+
+ return result;
+}
+
+/**
+ * It can be helpful to force the profiler to collect a JavaScript sample. This
+ * function spins on a while loop until at least one more sample is collected.
+ *
+ * @return {number} The index of the collected sample.
+ */
+function captureAtLeastOneJsSample() {
+ function getProfileSampleCount() {
+ const profile = Services.profiler.getProfileData();
+ return profile.threads[0].samples.data.length;
+ }
+
+ const sampleCount = getProfileSampleCount();
+ // Create an infinite loop until a sample has been collected.
+ while (true) {
+ if (sampleCount < getProfileSampleCount()) {
+ return sampleCount;
+ }
+ }
+}
+
+function isJSONWhitespace(c) {
+ return ["\n", "\r", " ", "\t"].includes(c);
+}
+
+function verifyJSONStringIsCompact(s) {
+ const stateData = 0;
+ const stateString = 1;
+ const stateEscapedChar = 2;
+ let state = stateData;
+ for (let i = 0; i < s.length; ++i) {
+ let c = s[i];
+ switch (state) {
+ case stateData:
+ if (isJSONWhitespace(c)) {
+ Assert.ok(
+ false,
+ `"Unexpected JSON whitespace at index ${i} in profile: <<<${s}>>>"`
+ );
+ return;
+ }
+ if (c == '"') {
+ state = stateString;
+ }
+ break;
+ case stateString:
+ if (c == '"') {
+ state = stateData;
+ } else if (c == "\\") {
+ state = stateEscapedChar;
+ }
+ break;
+ case stateEscapedChar:
+ state = stateString;
+ break;
+ }
+ }
+}
+
+/**
+ * This function pauses the profiler before getting the profile. Then after
+ * getting the data, the profiler is stopped, and all profiler data is removed.
+ * @returns {Promise<Profile>}
+ */
+async function stopNowAndGetProfile() {
+ // Don't await the pause, because each process will handle it before it
+ // receives the following `getProfileDataAsArrayBuffer()`.
+ Services.profiler.Pause();
+
+ const profileArrayBuffer =
+ await Services.profiler.getProfileDataAsArrayBuffer();
+ await Services.profiler.StopProfiler();
+
+ const profileUint8Array = new Uint8Array(profileArrayBuffer);
+ const textDecoder = new TextDecoder("utf-8", { fatal: true });
+ const profileString = textDecoder.decode(profileUint8Array);
+ verifyJSONStringIsCompact(profileString);
+
+ return JSON.parse(profileString);
+}
+
+/**
+ * This function ensures there's at least one sample, then pauses the profiler
+ * before getting the profile. Then after getting the data, the profiler is
+ * stopped, and all profiler data is removed.
+ * @returns {Promise<Profile>}
+ */
+async function waitSamplingAndStopAndGetProfile() {
+ await Services.profiler.waitOnePeriodicSampling();
+ return stopNowAndGetProfile();
+}
+
+/**
+ * Verifies that a marker is an interval marker.
+ *
+ * @param {InflatedMarker} marker
+ * @returns {boolean}
+ */
+function isIntervalMarker(inflatedMarker) {
+ return (
+ inflatedMarker.phase === 1 &&
+ typeof inflatedMarker.startTime === "number" &&
+ typeof inflatedMarker.endTime === "number"
+ );
+}
+
+/**
+ * @param {Profile} profile
+ * @returns {Thread[]}
+ */
+function getThreads(profile) {
+ const threads = [];
+
+ function getThreadsRecursive(process) {
+ for (const thread of process.threads) {
+ threads.push(thread);
+ }
+ for (const subprocess of process.processes) {
+ getThreadsRecursive(subprocess);
+ }
+ }
+
+ getThreadsRecursive(profile);
+ return threads;
+}
+
+/**
+ * Find a specific marker schema from any process of a profile.
+ *
+ * @param {Profile} profile
+ * @param {string} name
+ * @returns {MarkerSchema}
+ */
+function getSchema(profile, name) {
+ {
+ const schema = profile.meta.markerSchema.find(s => s.name === name);
+ if (schema) {
+ return schema;
+ }
+ }
+ for (const subprocess of profile.processes) {
+ const schema = subprocess.meta.markerSchema.find(s => s.name === name);
+ if (schema) {
+ return schema;
+ }
+ }
+ console.error("Parent process schema", profile.meta.markerSchema);
+ for (const subprocess of profile.processes) {
+ console.error("Child process schema", subprocess.meta.markerSchema);
+ }
+ throw new Error(`Could not find a schema for "${name}".`);
+}
+
+/**
+ * This escapes all characters that have a special meaning in RegExps.
+ * This was stolen from https://github.com/sindresorhus/escape-string-regexp and
+ * so it is licence MIT and:
+ * Copyright (c) Sindre Sorhus <sindresorhus@gmail.com> (https://sindresorhus.com).
+ * See the full license in https://raw.githubusercontent.com/sindresorhus/escape-string-regexp/main/license.
+ * @param {string} string The string to be escaped
+ * @returns {string} The result
+ */
+function escapeStringRegexp(string) {
+ if (typeof string !== "string") {
+ throw new TypeError("Expected a string");
+ }
+
+ // Escape characters with special meaning either inside or outside character
+ // sets. Use a simple backslash escape when it’s always valid, and a `\xnn`
+ // escape when the simpler form would be disallowed by Unicode patterns’
+ // stricter grammar.
+ return string.replace(/[|\\{}()[\]^$+*?.]/g, "\\$&").replace(/-/g, "\\x2d");
+}
+
+/** ------ Assertions helper ------ */
+/**
+ * This assert helper function makes it easy to check a lot of properties in an
+ * object. We augment Assert.sys.mjs to make it easier to use.
+ */
+Object.assign(Assert, {
+ /*
+ * It checks if the properties on the right are all present in the object on
+ * the left. Note that the object might still have other properties (see
+ * objectContainsOnly below if you want the stricter form).
+ *
+ * The basic form does basic equality on each expected property:
+ *
+ * Assert.objectContains(fixture, {
+ * foo: "foo",
+ * bar: 1,
+ * baz: true,
+ * });
+ *
+ * But it also has a more powerful form with expectations. The available
+ * expectations are:
+ * - any(): this only checks for the existence of the property, not its value
+ * - number(), string(), boolean(), bigint(), function(), symbol(), object():
+ * this checks if the value is of this type
+ * - objectContains(expected): this applies Assert.objectContains()
+ * recursively on this property.
+ * - stringContains(needle): this checks if the expected value is included in
+ * the property value.
+ * - stringMatches(regexp): this checks if the property value matches this
+ * regexp. The regexp can be passed as a string, to be dynamically built.
+ *
+ * example:
+ *
+ * Assert.objectContains(fixture, {
+ * name: Expect.stringMatches(`Load \\d+:.*${url}`),
+ * data: Expect.objectContains({
+ * status: "STATUS_STOP",
+ * URI: Expect.stringContains("https://"),
+ * requestMethod: "GET",
+ * contentType: Expect.string(),
+ * startTime: Expect.number(),
+ * cached: Expect.boolean(),
+ * }),
+ * });
+ *
+ * Each expectation will translate into one or more Assert call. Therefore if
+ * one expectation fails, this will be clearly visible in the test output.
+ *
+ * Expectations can also be normal functions, for example:
+ *
+ * Assert.objectContains(fixture, {
+ * number: value => Assert.greater(value, 5)
+ * });
+ *
+ * Note that you'll need to use Assert inside this function.
+ */
+ objectContains(object, expectedProperties) {
+ // Basic tests: we don't want to run other assertions if these tests fail.
+ if (typeof object !== "object") {
+ this.ok(
+ false,
+ `The first parameter should be an object, but found: ${object}.`
+ );
+ return;
+ }
+
+ if (typeof expectedProperties !== "object") {
+ this.ok(
+ false,
+ `The second parameter should be an object, but found: ${expectedProperties}.`
+ );
+ return;
+ }
+
+ for (const key of Object.keys(expectedProperties)) {
+ const expected = expectedProperties[key];
+ if (!(key in object)) {
+ this.report(
+ true,
+ object,
+ expectedProperties,
+ `The object should contain the property "${key}", but it's missing.`
+ );
+ continue;
+ }
+
+ if (typeof expected === "function") {
+ // This is a function, so let's call it.
+ expected(
+ object[key],
+ `The object should contain the property "${key}" with an expected value and type.`
+ );
+ } else {
+ // Otherwise, we check for equality.
+ this.equal(
+ object[key],
+ expectedProperties[key],
+ `The object should contain the property "${key}" with an expected value.`
+ );
+ }
+ }
+ },
+
+ /**
+ * This is very similar to the previous `objectContains`, but this also looks
+ * at the number of the objects' properties. Thus this will fail if the
+ * objects don't have the same properties exactly.
+ */
+ objectContainsOnly(object, expectedProperties) {
+ // Basic tests: we don't want to run other assertions if these tests fail.
+ if (typeof object !== "object") {
+ this.ok(
+ false,
+ `The first parameter should be an object but found: ${object}.`
+ );
+ return;
+ }
+
+ if (typeof expectedProperties !== "object") {
+ this.ok(
+ false,
+ `The second parameter should be an object but found: ${expectedProperties}.`
+ );
+ return;
+ }
+
+ // In objectContainsOnly, we specifically want to check if all properties
+ // from the fixture object are expected.
+ // We'll be failing a test only for the specific properties that weren't
+ // expected, and only fail with one message, so that the test outputs aren't
+ // spammed.
+ const extraProperties = [];
+ for (const fixtureKey of Object.keys(object)) {
+ if (!(fixtureKey in expectedProperties)) {
+ extraProperties.push(fixtureKey);
+ }
+ }
+
+ if (extraProperties.length) {
+ // Some extra properties have been found.
+ this.report(
+ true,
+ object,
+ expectedProperties,
+ `These properties are present, but shouldn't: "${extraProperties.join(
+ '", "'
+ )}".`
+ );
+ }
+
+ // Now, let's carry on the rest of our work.
+ this.objectContains(object, expectedProperties);
+ },
+});
+
+const Expect = {
+ any:
+ () =>
+ actual => {} /* We don't check anything more than the presence of this property. */,
+};
+
+/* These functions are part of the Assert object, and we want to reuse them. */
+[
+ "stringContains",
+ "stringMatches",
+ "objectContains",
+ "objectContainsOnly",
+].forEach(
+ assertChecker =>
+ (Expect[assertChecker] =
+ expected =>
+ (actual, ...moreArgs) =>
+ Assert[assertChecker](actual, expected, ...moreArgs))
+);
+
+/* These functions will only check for the type. */
+[
+ "number",
+ "string",
+ "boolean",
+ "bigint",
+ "symbol",
+ "object",
+ "function",
+].forEach(type => (Expect[type] = makeTypeChecker(type)));
+
+function makeTypeChecker(type) {
+ return (...unexpectedArgs) => {
+ if (unexpectedArgs.length) {
+ throw new Error(
+ "Type checkers expectations aren't expecting any argument."
+ );
+ }
+ return (actual, message) => {
+ const isCorrect = typeof actual === type;
+ Assert.report(!isCorrect, actual, type, message, "has type");
+ };
+ };
+}
+/* ------ End of assertion helper ------ */
diff --git a/tools/profiler/tests/xpcshell/head.js b/tools/profiler/tests/xpcshell/head.js
new file mode 100644
index 0000000000..ce87b32fd5
--- /dev/null
+++ b/tools/profiler/tests/xpcshell/head.js
@@ -0,0 +1,244 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+/* import-globals-from ../shared-head.js */
+
+// This Services declaration may shadow another from head.js, so define it as
+// a var rather than a const.
+
+const { AppConstants } = ChromeUtils.importESModule(
+ "resource://gre/modules/AppConstants.sys.mjs"
+);
+const { setTimeout } = ChromeUtils.importESModule(
+ "resource://gre/modules/Timer.sys.mjs"
+);
+
+// Load the shared head
+const sharedHead = do_get_file("shared-head.js", false);
+if (!sharedHead) {
+ throw new Error("Could not load the shared head.");
+}
+Services.scriptloader.loadSubScript(
+ Services.io.newFileURI(sharedHead).spec,
+ this
+);
+
+/**
+ * This function takes a thread, and a sample tuple from the "data" array, and
+ * inflates the frame to be an array of strings.
+ *
+ * @param {Object} thread - The thread from the profile.
+ * @param {Array} sample - The tuple from the thread.samples.data array.
+ * @returns {Array<string>} An array of function names.
+ */
+function getInflatedStackLocations(thread, sample) {
+ let stackTable = thread.stackTable;
+ let frameTable = thread.frameTable;
+ let stringTable = thread.stringTable;
+ let SAMPLE_STACK_SLOT = thread.samples.schema.stack;
+ let STACK_PREFIX_SLOT = stackTable.schema.prefix;
+ let STACK_FRAME_SLOT = stackTable.schema.frame;
+ let FRAME_LOCATION_SLOT = frameTable.schema.location;
+
+ // Build the stack from the raw data and accumulate the locations in
+ // an array.
+ let stackIndex = sample[SAMPLE_STACK_SLOT];
+ let locations = [];
+ while (stackIndex !== null) {
+ let stackEntry = stackTable.data[stackIndex];
+ let frame = frameTable.data[stackEntry[STACK_FRAME_SLOT]];
+ locations.push(stringTable[frame[FRAME_LOCATION_SLOT]]);
+ stackIndex = stackEntry[STACK_PREFIX_SLOT];
+ }
+
+ // The profiler tree is inverted, so reverse the array.
+ return locations.reverse();
+}
+
+/**
+ * This utility matches up stacks to see if they contain a certain sequence of
+ * stack frames. A correctly functioning profiler will have a certain sequence
+ * of stacks, but we can't always determine exactly which stacks will show up
+ * due to implementation changes, as well as memory addresses being arbitrary to
+ * that particular build.
+ *
+ * This function triggers a test failure with a nice debug message when it
+ * fails.
+ *
+ * @param {Array<string>} actualStackFrames - As generated by
+ * inflatedStackFrames.
+ * @param {Array<string | RegExp>} expectedStackFrames - Matches a subset of
+ * actualStackFrames
+ */
+function expectStackToContain(
+ actualStackFrames,
+ expectedStackFrames,
+ message = "The actual stack and expected stack do not match."
+) {
+ // Log the stacks that are being passed to this assertion, as it could be
+ // useful for when these tests fail.
+ console.log("Actual stack: ", actualStackFrames);
+ console.log(
+ "Expected to contain: ",
+ expectedStackFrames.map(s => s.toString())
+ );
+
+ let actualIndex = 0;
+
+ // Start walking the expected stack and look for matches.
+ for (
+ let expectedIndex = 0;
+ expectedIndex < expectedStackFrames.length;
+ expectedIndex++
+ ) {
+ const expectedStackFrame = expectedStackFrames[expectedIndex];
+
+ while (true) {
+ // Make sure that we haven't run out of actual stack frames.
+ if (actualIndex >= actualStackFrames.length) {
+ info(`Could not find a match for: "${expectedStackFrame.toString()}"`);
+ Assert.ok(false, message);
+ }
+
+ const actualStackFrame = actualStackFrames[actualIndex];
+ actualIndex++;
+
+ const itMatches =
+ typeof expectedStackFrame === "string"
+ ? expectedStackFrame === actualStackFrame
+ : actualStackFrame.match(expectedStackFrame);
+
+ if (itMatches) {
+ // We found a match, break out of this loop.
+ break;
+ }
+ // Keep on looping looking for a match.
+ }
+ }
+
+ Assert.ok(true, message);
+}
+
+/**
+ * @param {Thread} thread
+ * @param {string} filename - The filename used to trigger FileIO.
+ * @returns {InflatedMarkers[]}
+ */
+function getInflatedFileIOMarkers(thread, filename) {
+ const markers = getInflatedMarkerData(thread);
+ return markers.filter(
+ marker =>
+ marker.data?.type === "FileIO" &&
+ marker.data?.filename?.endsWith(filename)
+ );
+}
+
+/**
+ * Checks properties common to all FileIO markers.
+ *
+ * @param {InflatedMarkers[]} markers
+ * @param {string} filename
+ */
+function checkInflatedFileIOMarkers(markers, filename) {
+ greater(markers.length, 0, "Found some markers");
+
+ // See IOInterposeObserver::Observation::ObservedOperationString
+ const validOperations = new Set([
+ "write",
+ "fsync",
+ "close",
+ "stat",
+ "create/open",
+ "read",
+ ]);
+ const validSources = new Set(["PoisonIOInterposer", "NSPRIOInterposer"]);
+
+ for (const marker of markers) {
+ try {
+ ok(
+ marker.name.startsWith("FileIO"),
+ "Has a marker.name that starts with FileIO"
+ );
+ equal(marker.data.type, "FileIO", "Has a marker.data.type");
+ ok(isIntervalMarker(marker), "All FileIO markers are interval markers");
+ ok(
+ validOperations.has(marker.data.operation),
+ `The markers have a known operation - "${marker.data.operation}"`
+ );
+ ok(
+ validSources.has(marker.data.source),
+ `The FileIO marker has a known source "${marker.data.source}"`
+ );
+ ok(marker.data.filename.endsWith(filename));
+ ok(Boolean(marker.data.stack), "A stack was collected");
+ } catch (error) {
+ console.error("Failing inflated FileIO marker:", marker);
+ throw error;
+ }
+ }
+}
+
+/**
+ * Do deep equality checks for schema, but then surface nice errors for a user to know
+ * what to do if the check fails.
+ */
+function checkSchema(actual, expected) {
+ const schemaName = expected.name;
+ info(`Checking marker schema for "${schemaName}"`);
+
+ try {
+ ok(
+ actual,
+ `Schema was found for "${schemaName}". See the test output for more information.`
+ );
+ // Check individual properties to surface easier to debug errors.
+ deepEqual(
+ expected.display,
+ actual.display,
+ `The "display" property for ${schemaName} schema matches. See the test output for more information.`
+ );
+ if (expected.data) {
+ ok(actual.data, `Schema was found for "${schemaName}"`);
+ for (const expectedDatum of expected.data) {
+ const actualDatum = actual.data.find(d => d.key === expectedDatum.key);
+ deepEqual(
+ expectedDatum,
+ actualDatum,
+ `The "${schemaName}" field "${expectedDatum.key}" matches expectations. See the test output for more information.`
+ );
+ }
+ equal(
+ expected.data.length,
+ actual.data.length,
+ "The expected and actual data have the same number of items"
+ );
+ }
+
+ // Finally do a true deep equal.
+ deepEqual(expected, actual, "The entire schema is deepEqual");
+ } catch (error) {
+ // The test results are not very human readable. This is a bit of a hacky
+ // solution to make it more readable.
+ dump("-----------------------------------------------------\n");
+ dump("The expected marker schema:\n");
+ dump("-----------------------------------------------------\n");
+ dump(JSON.stringify(expected, null, 2));
+ dump("\n");
+ dump("-----------------------------------------------------\n");
+ dump("The actual marker schema:\n");
+ dump("-----------------------------------------------------\n");
+ dump(JSON.stringify(actual, null, 2));
+ dump("\n");
+ dump("-----------------------------------------------------\n");
+ dump("A marker schema was not equal to expectations. If you\n");
+ dump("are modifying the schema, then please copy and paste\n");
+ dump("the new schema into this test.\n");
+ dump("-----------------------------------------------------\n");
+ dump("Copy this: " + JSON.stringify(actual));
+ dump("\n");
+ dump("-----------------------------------------------------\n");
+
+ throw error;
+ }
+}
diff --git a/tools/profiler/tests/xpcshell/test_active_configuration.js b/tools/profiler/tests/xpcshell/test_active_configuration.js
new file mode 100644
index 0000000000..c4336f3f32
--- /dev/null
+++ b/tools/profiler/tests/xpcshell/test_active_configuration.js
@@ -0,0 +1,115 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+add_task(async () => {
+ info(
+ "Checking that the profiler can fetch the information about the active " +
+ "configuration that is being used to power the profiler."
+ );
+
+ equal(
+ Services.profiler.activeConfiguration,
+ null,
+ "When the profile is off, there is no active configuration."
+ );
+
+ {
+ info("Start the profiler.");
+ const entries = 10000;
+ const interval = 1;
+ const threads = ["GeckoMain"];
+ const features = ["js"];
+ const activeTabID = 123;
+ await Services.profiler.StartProfiler(
+ entries,
+ interval,
+ features,
+ threads,
+ activeTabID
+ );
+
+ info("Generate the activeConfiguration.");
+ const { activeConfiguration } = Services.profiler;
+ const expectedConfiguration = {
+ interval,
+ threads,
+ features,
+ activeTabID,
+ // The buffer is created as a power of two that can fit all of the entires
+ // into it. If the ratio of entries to buffer size ever changes, this setting
+ // will need to be updated.
+ capacity: Math.pow(2, 14),
+ };
+
+ deepEqual(
+ activeConfiguration,
+ expectedConfiguration,
+ "The active configuration matches configuration given."
+ );
+
+ info("Get the profile.");
+ const profile = Services.profiler.getProfileData();
+ deepEqual(
+ profile.meta.configuration,
+ expectedConfiguration,
+ "The configuration also matches on the profile meta object."
+ );
+ }
+
+ {
+ const entries = 20000;
+ const interval = 0.5;
+ const threads = ["GeckoMain", "DOM Worker"];
+ const features = [];
+ const activeTabID = 111;
+ const duration = 20;
+
+ info("Restart the profiler with a new configuration.");
+ await Services.profiler.StartProfiler(
+ entries,
+ interval,
+ features,
+ threads,
+ activeTabID,
+ // Also start it with duration, this property is optional.
+ duration
+ );
+
+ info("Generate the activeConfiguration.");
+ const { activeConfiguration } = Services.profiler;
+ const expectedConfiguration = {
+ interval,
+ threads,
+ features,
+ activeTabID,
+ duration,
+ // The buffer is created as a power of two that can fit all of the entires
+ // into it. If the ratio of entries to buffer size ever changes, this setting
+ // will need to be updated.
+ capacity: Math.pow(2, 15),
+ };
+
+ deepEqual(
+ activeConfiguration,
+ expectedConfiguration,
+ "The active configuration matches the new configuration."
+ );
+
+ info("Get the profile.");
+ const profile = Services.profiler.getProfileData();
+ deepEqual(
+ profile.meta.configuration,
+ expectedConfiguration,
+ "The configuration also matches on the profile meta object."
+ );
+ }
+
+ await Services.profiler.StopProfiler();
+
+ equal(
+ Services.profiler.activeConfiguration,
+ null,
+ "When the profile is off, there is no active configuration."
+ );
+});
diff --git a/tools/profiler/tests/xpcshell/test_addProfilerMarker.js b/tools/profiler/tests/xpcshell/test_addProfilerMarker.js
new file mode 100644
index 0000000000..b11545a41c
--- /dev/null
+++ b/tools/profiler/tests/xpcshell/test_addProfilerMarker.js
@@ -0,0 +1,221 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+/**
+ * Test that ChromeUtils.addProfilerMarker is working correctly.
+ */
+
+const markerNamePrefix = "test_addProfilerMarker";
+const markerText = "Text payload";
+// The same startTime will be used for all markers with a duration,
+// and we store this value globally so that expectDuration and
+// expectNoDuration can access it. The value isn't set here as we
+// want a start time after the profiler has started
+var startTime;
+
+function expectNoDuration(marker) {
+ Assert.equal(
+ typeof marker.startTime,
+ "number",
+ "startTime should be a number"
+ );
+ Assert.greater(
+ marker.startTime,
+ startTime,
+ "startTime should be after the begining of the test"
+ );
+ Assert.equal(typeof marker.endTime, "number", "endTime should be a number");
+ Assert.equal(marker.endTime, 0, "endTime should be 0");
+}
+
+function expectDuration(marker) {
+ Assert.equal(
+ typeof marker.startTime,
+ "number",
+ "startTime should be a number"
+ );
+ // Floats can cause rounding issues. We've seen up to a 4.17e-5 difference in
+ // intermittent failures, so we are permissive and accept up to 5e-5.
+ Assert.less(
+ Math.abs(marker.startTime - startTime),
+ 5e-5,
+ "startTime should be the expected time"
+ );
+ Assert.equal(typeof marker.endTime, "number", "endTime should be a number");
+ Assert.greater(
+ marker.endTime,
+ startTime,
+ "endTime should be after startTime"
+ );
+}
+
+function expectNoData(marker) {
+ Assert.equal(
+ typeof marker.data,
+ "undefined",
+ "The data property should be undefined"
+ );
+}
+
+function expectText(marker) {
+ Assert.equal(
+ typeof marker.data,
+ "object",
+ "The data property should be an object"
+ );
+ Assert.equal(marker.data.type, "Text", "Should be a Text marker");
+ Assert.equal(
+ marker.data.name,
+ markerText,
+ "The payload should contain the expected text"
+ );
+}
+
+function expectNoStack(marker) {
+ Assert.ok(!marker.data || !marker.data.stack, "There should be no stack");
+}
+
+function expectStack(marker, thread) {
+ let stack = marker.data.stack;
+ Assert.ok(!!stack, "There should be a stack");
+
+ // Marker stacks are recorded as a profile of a thread with a single sample,
+ // get the stack id.
+ stack = stack.samples.data[0][stack.samples.schema.stack];
+
+ const stackPrefixCol = thread.stackTable.schema.prefix;
+ const stackFrameCol = thread.stackTable.schema.frame;
+ const frameLocationCol = thread.frameTable.schema.location;
+
+ // Get the entire stack in an array for easier processing.
+ let result = [];
+ while (stack != null) {
+ let stackEntry = thread.stackTable.data[stack];
+ let frame = thread.frameTable.data[stackEntry[stackFrameCol]];
+ result.push(thread.stringTable[frame[frameLocationCol]]);
+ stack = stackEntry[stackPrefixCol];
+ }
+
+ Assert.greaterOrEqual(
+ result.length,
+ 1,
+ "There should be at least one frame in the stack"
+ );
+
+ Assert.ok(
+ result.some(frame => frame.includes("testMarker")),
+ "the 'testMarker' function should be visible in the stack"
+ );
+
+ Assert.ok(
+ !result.some(frame => frame.includes("ChromeUtils.addProfilerMarker")),
+ "the 'ChromeUtils.addProfilerMarker' label frame should not be visible in the stack"
+ );
+}
+
+add_task(async () => {
+ startProfilerForMarkerTests();
+ startTime = Cu.now();
+ while (Cu.now() < startTime + 1) {
+ // Busy wait for 1ms to ensure the intentionally set start time of markers
+ // will be significantly different from the time at which the marker is
+ // recorded.
+ }
+ info("startTime used for markers with durations: " + startTime);
+
+ /* Each call to testMarker will record a marker with a unique name.
+ * The testFunctions and testCases objects contain respectively test
+ * functions to verify that the marker found in the captured profile
+ * matches expectations, and a string that can be printed to describe
+ * in which way ChromeUtils.addProfilerMarker was called. */
+ let testFunctions = {};
+ let testCases = {};
+ let markerId = 0;
+ function testMarker(args, checks) {
+ let name = markerNamePrefix + markerId++;
+ ChromeUtils.addProfilerMarker(name, ...args);
+ testFunctions[name] = checks;
+ testCases[name] = `ChromeUtils.addProfilerMarker(${[name, ...args]
+ .toSource()
+ .slice(1, -1)})`;
+ }
+
+ info("Record markers without options object.");
+ testMarker([], m => {
+ expectNoDuration(m);
+ expectNoData(m);
+ });
+ testMarker([startTime], m => {
+ expectDuration(m);
+ expectNoData(m);
+ });
+ testMarker([undefined, markerText], m => {
+ expectNoDuration(m);
+ expectText(m);
+ });
+ testMarker([startTime, markerText], m => {
+ expectDuration(m);
+ expectText(m);
+ });
+
+ info("Record markers providing the duration as the startTime property.");
+ testMarker([{ startTime }], m => {
+ expectDuration(m);
+ expectNoData(m);
+ });
+ testMarker([{}, markerText], m => {
+ expectNoDuration(m);
+ expectText(m);
+ });
+ testMarker([{ startTime }, markerText], m => {
+ expectDuration(m);
+ expectText(m);
+ });
+
+ info("Record markers to test the captureStack property.");
+ const captureStack = true;
+ testMarker([], expectNoStack);
+ testMarker([startTime, markerText], expectNoStack);
+ testMarker([{ captureStack: false }], expectNoStack);
+ testMarker([{ captureStack }], expectStack);
+ testMarker([{ startTime, captureStack }], expectStack);
+ testMarker([{ captureStack }, markerText], expectStack);
+ testMarker([{ startTime, captureStack }, markerText], expectStack);
+
+ info("Record markers to test the category property");
+ function testCategory(args, expectedCategory) {
+ testMarker(args, marker => {
+ Assert.equal(marker.category, expectedCategory);
+ });
+ }
+ testCategory([], "JavaScript");
+ testCategory([{ category: "Test" }], "Test");
+ testCategory([{ category: "Test" }, markerText], "Test");
+ testCategory([{ category: "JavaScript" }], "JavaScript");
+ testCategory([{ category: "Other" }], "Other");
+ testCategory([{ category: "DOM" }], "DOM");
+ testCategory([{ category: "does not exist" }], "Other");
+
+ info("Capture the profile");
+ const profile = await stopNowAndGetProfile();
+ const mainThread = profile.threads.find(({ name }) => name === "GeckoMain");
+ const markers = getInflatedMarkerData(mainThread).filter(m =>
+ m.name.startsWith(markerNamePrefix)
+ );
+ Assert.equal(
+ markers.length,
+ Object.keys(testFunctions).length,
+ `Found ${markers.length} test markers in the captured profile`
+ );
+
+ for (let marker of markers) {
+ marker.category = profile.meta.categories[marker.category].name;
+ info(`${testCases[marker.name]} -> ${marker.toSource()}`);
+
+ testFunctions[marker.name](marker, mainThread);
+ delete testFunctions[marker.name];
+ }
+
+ Assert.equal(0, Object.keys(testFunctions).length, "all markers were found");
+});
diff --git a/tools/profiler/tests/xpcshell/test_asm.js b/tools/profiler/tests/xpcshell/test_asm.js
new file mode 100644
index 0000000000..ced36ce429
--- /dev/null
+++ b/tools/profiler/tests/xpcshell/test_asm.js
@@ -0,0 +1,76 @@
+// Check that asm.js code shows up on the stack.
+add_task(async () => {
+ // This test assumes that it's starting on an empty profiler stack.
+ // (Note that the other profiler tests also assume the profiler
+ // isn't already started.)
+ Assert.ok(!Services.profiler.IsActive());
+
+ let jsFuns = Cu.getJSTestingFunctions();
+ if (!jsFuns.isAsmJSCompilationAvailable()) {
+ return;
+ }
+
+ const ms = 10;
+ await Services.profiler.StartProfiler(10000, ms, ["js"]);
+
+ let stack = null;
+ function ffi_function() {
+ var delayMS = 5;
+ while (1) {
+ let then = Date.now();
+ do {
+ // do nothing
+ } while (Date.now() - then < delayMS);
+
+ var thread0 = Services.profiler.getProfileData().threads[0];
+
+ if (delayMS > 30000) {
+ return;
+ }
+
+ delayMS *= 2;
+
+ if (!thread0.samples.data.length) {
+ continue;
+ }
+
+ var lastSample = thread0.samples.data[thread0.samples.data.length - 1];
+ stack = String(getInflatedStackLocations(thread0, lastSample));
+ if (stack.includes("trampoline")) {
+ return;
+ }
+ }
+ }
+
+ function asmjs_module(global, ffis) {
+ "use asm";
+ var ffi = ffis.ffi;
+ function asmjs_function() {
+ ffi();
+ }
+ return asmjs_function;
+ }
+
+ Assert.ok(jsFuns.isAsmJSModule(asmjs_module));
+
+ var asmjs_function = asmjs_module(null, { ffi: ffi_function });
+ Assert.ok(jsFuns.isAsmJSFunction(asmjs_function));
+
+ asmjs_function();
+
+ Assert.notEqual(stack, null);
+
+ var i1 = stack.indexOf("entry trampoline");
+ Assert.ok(i1 !== -1);
+ var i2 = stack.indexOf("asmjs_function");
+ Assert.ok(i2 !== -1);
+ var i3 = stack.indexOf("exit trampoline");
+ Assert.ok(i3 !== -1);
+ var i4 = stack.indexOf("ffi_function");
+ Assert.ok(i4 !== -1);
+ Assert.ok(i1 < i2);
+ Assert.ok(i2 < i3);
+ Assert.ok(i3 < i4);
+
+ await Services.profiler.StopProfiler();
+});
diff --git a/tools/profiler/tests/xpcshell/test_assertion_helper.js b/tools/profiler/tests/xpcshell/test_assertion_helper.js
new file mode 100644
index 0000000000..baa4c34818
--- /dev/null
+++ b/tools/profiler/tests/xpcshell/test_assertion_helper.js
@@ -0,0 +1,162 @@
+add_task(function setup() {
+ // With the default reporter, an assertion doesn't throw if it fails, it
+ // merely report the result to the reporter and then go on. But in this test
+ // we want that a failure really throws, so that we can actually assert that
+ // it throws in case of failures!
+ // That's why we disable the default repoter here.
+ // I noticed that this line needs to be in an add_task (or possibly run_test)
+ // function. If put outside this will crash the test.
+ Assert.setReporter(null);
+});
+
+add_task(function test_objectContains() {
+ const fixture = {
+ foo: "foo",
+ bar: "bar",
+ };
+
+ Assert.objectContains(fixture, { foo: "foo" }, "Matches one property value");
+ Assert.objectContains(
+ fixture,
+ { foo: "foo", bar: "bar" },
+ "Matches both properties"
+ );
+ Assert.objectContainsOnly(
+ fixture,
+ { foo: "foo", bar: "bar" },
+ "Matches both properties"
+ );
+ Assert.throws(
+ () => Assert.objectContainsOnly(fixture, { foo: "foo" }),
+ /AssertionError/,
+ "Fails if some properties are missing"
+ );
+ Assert.throws(
+ () => Assert.objectContains(fixture, { foo: "bar" }),
+ /AssertionError/,
+ "Fails if the value for a present property is wrong"
+ );
+ Assert.throws(
+ () => Assert.objectContains(fixture, { hello: "world" }),
+ /AssertionError/,
+ "Fails if an expected property is missing"
+ );
+ Assert.throws(
+ () => Assert.objectContains(fixture, { foo: "foo", hello: "world" }),
+ /AssertionError/,
+ "Fails if some properties are present but others are missing"
+ );
+});
+
+add_task(function test_objectContains_expectations() {
+ const fixture = {
+ foo: "foo",
+ bar: "bar",
+ num: 42,
+ nested: {
+ nestedFoo: "nestedFoo",
+ nestedBar: "nestedBar",
+ },
+ };
+
+ Assert.objectContains(
+ fixture,
+ {
+ foo: Expect.stringMatches(/^fo/),
+ bar: Expect.stringContains("ar"),
+ num: Expect.number(),
+ nested: Expect.objectContainsOnly({
+ nestedFoo: Expect.stringMatches(/[Ff]oo/),
+ nestedBar: Expect.stringMatches(/[Bb]ar/),
+ }),
+ },
+ "Supports expectations"
+ );
+ Assert.objectContainsOnly(
+ fixture,
+ {
+ foo: Expect.stringMatches(/^fo/),
+ bar: Expect.stringContains("ar"),
+ num: Expect.number(),
+ nested: Expect.objectContains({
+ nestedFoo: Expect.stringMatches(/[Ff]oo/),
+ }),
+ },
+ "Supports expectations"
+ );
+
+ Assert.objectContains(fixture, {
+ num: val => Assert.greater(val, 40),
+ });
+
+ // Failed expectations
+ Assert.throws(
+ () =>
+ Assert.objectContains(fixture, {
+ foo: Expect.stringMatches(/bar/),
+ }),
+ /AssertionError/,
+ "Expect.stringMatches shouldn't match when the value is unexpected"
+ );
+ Assert.throws(
+ () =>
+ Assert.objectContains(fixture, {
+ foo: Expect.stringContains("bar"),
+ }),
+ /AssertionError/,
+ "Expect.stringContains shouldn't match when the value is unexpected"
+ );
+ Assert.throws(
+ () =>
+ Assert.objectContains(fixture, {
+ foo: Expect.number(),
+ }),
+ /AssertionError/,
+ "Expect.number shouldn't match when the value isn't a number"
+ );
+ Assert.throws(
+ () =>
+ Assert.objectContains(fixture, {
+ nested: Expect.objectContains({
+ nestedFoo: "bar",
+ }),
+ }),
+ /AssertionError/,
+ "Expect.objectContains should throw when the value is unexpected"
+ );
+
+ Assert.throws(
+ () =>
+ Assert.objectContains(fixture, {
+ num: val => Assert.less(val, 40),
+ }),
+ /AssertionError/,
+ "Expect.objectContains should throw when a function assertion fails"
+ );
+});
+
+add_task(function test_type_expectations() {
+ const fixture = {
+ any: "foo",
+ string: "foo",
+ number: 42,
+ boolean: true,
+ bigint: 42n,
+ symbol: Symbol("foo"),
+ object: { foo: "foo" },
+ function1() {},
+ function2: () => {},
+ };
+
+ Assert.objectContains(fixture, {
+ any: Expect.any(),
+ string: Expect.string(),
+ number: Expect.number(),
+ boolean: Expect.boolean(),
+ bigint: Expect.bigint(),
+ symbol: Expect.symbol(),
+ object: Expect.object(),
+ function1: Expect.function(),
+ function2: Expect.function(),
+ });
+});
diff --git a/tools/profiler/tests/xpcshell/test_enterjit_osr.js b/tools/profiler/tests/xpcshell/test_enterjit_osr.js
new file mode 100644
index 0000000000..86845ddc76
--- /dev/null
+++ b/tools/profiler/tests/xpcshell/test_enterjit_osr.js
@@ -0,0 +1,52 @@
+// Check that the EnterJIT frame, added by the JIT trampoline and
+// usable by a native unwinder to resume unwinding after encountering
+// JIT code, is pushed as expected.
+function run_test() {
+ // This test assumes that it's starting on an empty profiler stack.
+ // (Note that the other profiler tests also assume the profiler
+ // isn't already started.)
+ Assert.ok(!Services.profiler.IsActive());
+
+ const ms = 5;
+ Services.profiler.StartProfiler(10000, ms, ["js"]);
+
+ function has_arbitrary_name_in_stack() {
+ // A frame for |arbitrary_name| has been pushed. Do a sequence of
+ // increasingly long spins until we get a sample.
+ var delayMS = 5;
+ while (1) {
+ info("loop: ms = " + delayMS);
+ const then = Date.now();
+ do {
+ let n = 10000;
+ // eslint-disable-next-line no-empty
+ while (--n) {} // OSR happens here
+ // Spin in the hope of getting a sample.
+ } while (Date.now() - then < delayMS);
+ let profile = Services.profiler.getProfileData().threads[0];
+
+ // Go through all of the stacks, and search for this function name.
+ for (const sample of profile.samples.data) {
+ const stack = getInflatedStackLocations(profile, sample);
+ info(`The following stack was found: ${stack}`);
+ for (var i = 0; i < stack.length; i++) {
+ if (stack[i].match(/arbitrary_name/)) {
+ // This JS sample was correctly found.
+ return true;
+ }
+ }
+ }
+
+ // Continue running this function with an increasingly long delay.
+ delayMS *= 2;
+ if (delayMS > 30000) {
+ return false;
+ }
+ }
+ }
+ Assert.ok(
+ has_arbitrary_name_in_stack(),
+ "A JS frame was found before the test timeout."
+ );
+ Services.profiler.StopProfiler();
+}
diff --git a/tools/profiler/tests/xpcshell/test_enterjit_osr_disabling.js b/tools/profiler/tests/xpcshell/test_enterjit_osr_disabling.js
new file mode 100644
index 0000000000..558c9b0c3b
--- /dev/null
+++ b/tools/profiler/tests/xpcshell/test_enterjit_osr_disabling.js
@@ -0,0 +1,14 @@
+function run_test() {
+ Assert.ok(!Services.profiler.IsActive());
+
+ Services.profiler.StartProfiler(100, 10, ["js"]);
+ // The function is entered with the profiler enabled
+ (function () {
+ Services.profiler.StopProfiler();
+ let n = 10000;
+ // eslint-disable-next-line no-empty
+ while (--n) {} // OSR happens here with the profiler disabled.
+ // An assertion will fail when this function returns, if the
+ // profiler stack was misbalanced.
+ })();
+}
diff --git a/tools/profiler/tests/xpcshell/test_enterjit_osr_enabling.js b/tools/profiler/tests/xpcshell/test_enterjit_osr_enabling.js
new file mode 100644
index 0000000000..313d939caf
--- /dev/null
+++ b/tools/profiler/tests/xpcshell/test_enterjit_osr_enabling.js
@@ -0,0 +1,14 @@
+function run_test() {
+ Assert.ok(!Services.profiler.IsActive());
+
+ // The function is entered with the profiler disabled.
+ (function () {
+ Services.profiler.StartProfiler(100, 10, ["js"]);
+ let n = 10000;
+ // eslint-disable-next-line no-empty
+ while (--n) {} // OSR happens here with the profiler enabled.
+ // An assertion will fail when this function returns, if the
+ // profiler stack was misbalanced.
+ })();
+ Services.profiler.StopProfiler();
+}
diff --git a/tools/profiler/tests/xpcshell/test_feature_fileioall.js b/tools/profiler/tests/xpcshell/test_feature_fileioall.js
new file mode 100644
index 0000000000..e5ac040b98
--- /dev/null
+++ b/tools/profiler/tests/xpcshell/test_feature_fileioall.js
@@ -0,0 +1,159 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+add_task(async () => {
+ info(
+ "Test that off-main thread fileio is captured for a profiled thread, " +
+ "and that it will be sent to the main thread."
+ );
+ const filename = "test_marker_fileio";
+ const profile = await startProfilerAndTriggerFileIO({
+ features: ["fileioall"],
+ threadsFilter: ["GeckoMain", "BgIOThreadPool"],
+ filename,
+ });
+
+ const threads = getThreads(profile);
+ const mainThread = threads.find(thread => thread.name === "GeckoMain");
+ const mainThreadFileIO = getInflatedFileIOMarkers(mainThread, filename);
+ let backgroundThread;
+ let backgroundThreadFileIO;
+ for (const thread of threads) {
+ // Check for FileIO in any of the background threads.
+ if (thread.name.startsWith("BgIOThreadPool")) {
+ const markers = getInflatedFileIOMarkers(thread, filename);
+ if (markers.length) {
+ backgroundThread = thread;
+ backgroundThreadFileIO = markers;
+ break;
+ }
+ }
+ }
+
+ info("Check all of the main thread FileIO markers.");
+ checkInflatedFileIOMarkers(mainThreadFileIO, filename);
+ for (const { data, name } of mainThreadFileIO) {
+ equal(
+ name,
+ "FileIO (non-main thread)",
+ "The markers from off main thread are labeled as such."
+ );
+ equal(
+ data.threadId,
+ backgroundThread.tid,
+ "The main thread FileIO markers were all sent from the background thread."
+ );
+ }
+
+ info("Check all of the background thread FileIO markers.");
+ checkInflatedFileIOMarkers(backgroundThreadFileIO, filename);
+ for (const { data, name } of backgroundThreadFileIO) {
+ equal(
+ name,
+ "FileIO",
+ "The markers on the thread where they were generated just say FileIO"
+ );
+ equal(
+ data.threadId,
+ undefined,
+ "The background thread FileIO correctly excludes the threadId."
+ );
+ }
+});
+
+add_task(async () => {
+ info(
+ "Test that off-main thread fileio is captured for a thread that is not profiled, " +
+ "and that it will be sent to the main thread."
+ );
+ const filename = "test_marker_fileio";
+ const profile = await startProfilerAndTriggerFileIO({
+ features: ["fileioall"],
+ threadsFilter: ["GeckoMain"],
+ filename,
+ });
+
+ const threads = getThreads(profile);
+ const mainThread = threads.find(thread => thread.name === "GeckoMain");
+ const mainThreadFileIO = getInflatedFileIOMarkers(mainThread, filename);
+
+ info("Check all of the main thread FileIO markers.");
+ checkInflatedFileIOMarkers(mainThreadFileIO, filename);
+ for (const { data, name } of mainThreadFileIO) {
+ equal(
+ name,
+ "FileIO (non-profiled thread)",
+ "The markers from off main thread are labeled as such."
+ );
+ equal(typeof data.threadId, "number", "A thread ID is captured.");
+ }
+});
+
+/**
+ * @typedef {Object} TestConfig
+ * @prop {Array} features The list of profiler features
+ * @prop {string[]} threadsFilter The list of threads to profile
+ * @prop {string} filename A filename to trigger a write operation
+ */
+
+/**
+ * Start the profiler and get FileIO markers.
+ * @param {TestConfig}
+ * @returns {Profile}
+ */
+async function startProfilerAndTriggerFileIO({
+ features,
+ threadsFilter,
+ filename,
+}) {
+ const entries = 10000;
+ const interval = 10;
+ await Services.profiler.StartProfiler(
+ entries,
+ interval,
+ features,
+ threadsFilter
+ );
+
+ const path = PathUtils.join(PathUtils.tempDir, filename);
+
+ info(`Using a temporary file to test FileIO: ${path}`);
+
+ if (fileExists(path)) {
+ console.warn(
+ "This test is triggering FileIO by writing to a file. However, the test found an " +
+ "existing file at the location it was trying to write to. This could happen " +
+ "because a previous run of the test failed to clean up after itself. This test " +
+ " will now clean up that file before running the test again."
+ );
+ await removeFile(path);
+ }
+
+ info("Write to the file, but do so using a background thread.");
+
+ // IOUtils handles file operations using a background thread.
+ await IOUtils.write(path, new TextEncoder().encode("Test data."));
+ const exists = await fileExists(path);
+ ok(exists, `Created temporary file at: ${path}`);
+
+ info("Remove the file");
+ await removeFile(path);
+
+ return stopNowAndGetProfile();
+}
+
+async function fileExists(file) {
+ try {
+ let { type } = await IOUtils.stat(file);
+ return type === "regular";
+ } catch (_error) {
+ return false;
+ }
+}
+
+async function removeFile(file) {
+ await IOUtils.remove(file);
+ const exists = await fileExists(file);
+ ok(!exists, `Removed temporary file: ${file}`);
+}
diff --git a/tools/profiler/tests/xpcshell/test_feature_java.js b/tools/profiler/tests/xpcshell/test_feature_java.js
new file mode 100644
index 0000000000..e2f6879c2b
--- /dev/null
+++ b/tools/profiler/tests/xpcshell/test_feature_java.js
@@ -0,0 +1,31 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+/**
+ * Test that Java capturing works as expected.
+ */
+add_task(async () => {
+ info("Test that Android Java sampler works as expected.");
+ const entries = 10000;
+ const interval = 1;
+ const threads = [];
+ const features = ["java"];
+
+ Services.profiler.StartProfiler(entries, interval, features, threads);
+ Assert.ok(Services.profiler.IsActive());
+
+ await captureAtLeastOneJsSample();
+
+ info(
+ "Stop the profiler and check that we have successfully captured a profile" +
+ " with the AndroidUI thread."
+ );
+ const profile = await stopNowAndGetProfile();
+ Assert.notEqual(profile, null);
+ const androidUiThread = profile.threads.find(
+ thread => thread.name == "AndroidUI (JVM)"
+ );
+ Assert.notEqual(androidUiThread, null);
+ Assert.ok(!Services.profiler.IsActive());
+});
diff --git a/tools/profiler/tests/xpcshell/test_feature_js.js b/tools/profiler/tests/xpcshell/test_feature_js.js
new file mode 100644
index 0000000000..a5949e4a0c
--- /dev/null
+++ b/tools/profiler/tests/xpcshell/test_feature_js.js
@@ -0,0 +1,63 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+/**
+ * Test that JS capturing works as expected.
+ */
+add_task(async () => {
+ const entries = 10000;
+ const interval = 1;
+ const threads = [];
+ const features = ["js"];
+
+ await Services.profiler.StartProfiler(entries, interval, features, threads);
+
+ // Call the following to get a nice stack in the profiler:
+ // functionA -> functionB -> functionC -> captureAtLeastOneJsSample
+ const sampleIndex = await functionA();
+
+ const profile = await stopNowAndGetProfile();
+
+ const [thread] = profile.threads;
+ const { samples } = thread;
+
+ const inflatedStackFrames = getInflatedStackLocations(
+ thread,
+ samples.data[sampleIndex]
+ );
+
+ expectStackToContain(
+ inflatedStackFrames,
+ [
+ "(root)",
+ "js::RunScript",
+ // The following regexes match a string similar to:
+ //
+ // "functionA (/gecko/obj/_tests/xpcshell/tools/profiler/tests/xpcshell/test_feature_js.js:47:0)"
+ // or
+ // "functionA (test_feature_js.js:47:0)"
+ //
+ // this matches the script location
+ // | match the line number
+ // | | match the column number
+ // v v v
+ /^functionA \(.*test_feature_js\.js:\d+:\d+\)$/,
+ /^functionB \(.*test_feature_js\.js:\d+:\d+\)$/,
+ /^functionC \(.*test_feature_js\.js:\d+:\d+\)$/,
+ ],
+ "The stack contains a few frame labels, as well as the JS functions that we called."
+ );
+});
+
+function functionA() {
+ return functionB();
+}
+
+function functionB() {
+ return functionC();
+}
+
+async function functionC() {
+ return captureAtLeastOneJsSample();
+}
diff --git a/tools/profiler/tests/xpcshell/test_feature_mainthreadio.js b/tools/profiler/tests/xpcshell/test_feature_mainthreadio.js
new file mode 100644
index 0000000000..8ff5c9206d
--- /dev/null
+++ b/tools/profiler/tests/xpcshell/test_feature_mainthreadio.js
@@ -0,0 +1,122 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+const { FileUtils } = ChromeUtils.importESModule(
+ "resource://gre/modules/FileUtils.sys.mjs"
+);
+
+/**
+ * Test that the IOInterposer is working correctly to capture main thread IO.
+ *
+ * This test should not run on release or beta, as the IOInterposer is wrapped in
+ * an ifdef.
+ */
+add_task(async () => {
+ {
+ const filename = "profiler-mainthreadio-test-firstrun";
+ const { markers, schema } = await runProfilerWithFileIO(
+ ["mainthreadio"],
+ filename
+ );
+ info("Check the FileIO markers when using the mainthreadio feature");
+ checkInflatedFileIOMarkers(markers, filename);
+
+ checkSchema(schema, {
+ name: "FileIO",
+ display: ["marker-chart", "marker-table", "timeline-fileio"],
+ data: [
+ {
+ key: "operation",
+ label: "Operation",
+ format: "string",
+ searchable: true,
+ },
+ { key: "source", label: "Source", format: "string", searchable: true },
+ {
+ key: "filename",
+ label: "Filename",
+ format: "file-path",
+ searchable: true,
+ },
+ {
+ key: "threadId",
+ label: "Thread ID",
+ format: "string",
+ searchable: true,
+ },
+ ],
+ });
+ }
+
+ {
+ const filename = "profiler-mainthreadio-test-no-instrumentation";
+ const { markers } = await runProfilerWithFileIO([], filename);
+ equal(
+ markers.length,
+ 0,
+ "No FileIO markers are found when the mainthreadio feature is not turned on " +
+ "in the profiler."
+ );
+ }
+
+ {
+ const filename = "profiler-mainthreadio-test-secondrun";
+ const { markers } = await runProfilerWithFileIO(["mainthreadio"], filename);
+ info("Check the FileIO markers when re-starting the mainthreadio feature");
+ checkInflatedFileIOMarkers(markers, filename);
+ }
+});
+
+/**
+ * Start the profiler and get FileIO markers and schema.
+ *
+ * @param {Array} features The list of profiler features
+ * @param {string} filename A filename to trigger a write operation
+ * @returns {{
+ * markers: InflatedMarkers[];
+ * schema: MarkerSchema;
+ * }}
+ */
+async function runProfilerWithFileIO(features, filename) {
+ const entries = 10000;
+ const interval = 10;
+ const threads = [];
+ await Services.profiler.StartProfiler(entries, interval, features, threads);
+
+ info("Get the file");
+ const file = FileUtils.getFile("TmpD", [filename]);
+ if (file.exists()) {
+ console.warn(
+ "This test is triggering FileIO by writing to a file. However, the test found an " +
+ "existing file at the location it was trying to write to. This could happen " +
+ "because a previous run of the test failed to clean up after itself. This test " +
+ " will now clean up that file before running the test again."
+ );
+ file.remove(false);
+ }
+
+ info(
+ "Generate file IO on the main thread using FileUtils.openSafeFileOutputStream."
+ );
+ const outputStream = FileUtils.openSafeFileOutputStream(file);
+
+ const data = "Test data.";
+ info("Write to the file");
+ outputStream.write(data, data.length);
+
+ info("Close the file");
+ FileUtils.closeSafeFileOutputStream(outputStream);
+
+ info("Remove the file");
+ file.remove(false);
+
+ const profile = await stopNowAndGetProfile();
+ const mainThread = profile.threads.find(({ name }) => name === "GeckoMain");
+
+ const schema = getSchema(profile, "FileIO");
+
+ const markers = getInflatedFileIOMarkers(mainThread, filename);
+
+ return { schema, markers };
+}
diff --git a/tools/profiler/tests/xpcshell/test_feature_nativeallocations.js b/tools/profiler/tests/xpcshell/test_feature_nativeallocations.js
new file mode 100644
index 0000000000..64398d7ef9
--- /dev/null
+++ b/tools/profiler/tests/xpcshell/test_feature_nativeallocations.js
@@ -0,0 +1,158 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+add_task(async () => {
+ if (!Services.profiler.GetFeatures().includes("nativeallocations")) {
+ Assert.ok(
+ true,
+ "Native allocations are not supported by this build, " +
+ "skip run the rest of the test."
+ );
+ return;
+ }
+
+ Assert.ok(
+ !Services.profiler.IsActive(),
+ "The profiler is not currently active"
+ );
+
+ info(
+ "Test that the profiler can install memory hooks and collect native allocation " +
+ "information in the marker payloads."
+ );
+ {
+ info("Start the profiler.");
+ await startProfiler({
+ // Only instrument the main thread.
+ threads: ["GeckoMain"],
+ features: ["js", "nativeallocations"],
+ });
+
+ info(
+ "Do some JS work for a little bit. This will increase the amount of allocations " +
+ "that take place."
+ );
+ doWork();
+
+ info("Get the profile data and analyze it.");
+ const profile = await waitSamplingAndStopAndGetProfile();
+
+ const {
+ allocationPayloads,
+ unmatchedAllocations,
+ logAllocationsAndDeallocations,
+ } = getAllocationInformation(profile);
+
+ Assert.greater(
+ allocationPayloads.length,
+ 0,
+ "Native allocation payloads were recorded for the parent process' main thread when " +
+ "the Native Allocation feature was turned on."
+ );
+
+ if (unmatchedAllocations.length !== 0) {
+ info(
+ "There were unmatched allocations. Log all of the allocations and " +
+ "deallocations in order to aid debugging."
+ );
+ logAllocationsAndDeallocations();
+ ok(
+ false,
+ "Found a deallocation that did not have a matching allocation site. " +
+ "This could happen if balanced allocations is broken, or if the the " +
+ "buffer size of this test was too small, and some markers ended up " +
+ "rolling off."
+ );
+ }
+
+ ok(true, "All deallocation sites had matching allocations.");
+ }
+
+ info("Restart the profiler, to ensure that we get no more allocations.");
+ {
+ await startProfiler({ features: ["js"] });
+ info("Do some work again.");
+ doWork();
+ info("Wait for the periodic sampling.");
+ const profile = await waitSamplingAndStopAndGetProfile();
+ const allocationPayloads = getPayloadsOfType(
+ profile.threads[0],
+ "Native allocation"
+ );
+
+ Assert.equal(
+ allocationPayloads.length,
+ 0,
+ "No native allocations were collected when the feature was disabled."
+ );
+ }
+});
+
+function doWork() {
+ this.n = 0;
+ for (let i = 0; i < 1e5; i++) {
+ this.n += Math.random();
+ }
+}
+
+/**
+ * Extract the allocation payloads, and find the unmatched allocations.
+ */
+function getAllocationInformation(profile) {
+ // Get all of the allocation payloads.
+ const allocationPayloads = getPayloadsOfType(
+ profile.threads[0],
+ "Native allocation"
+ );
+
+ // Decide what is an allocation and deallocation.
+ const allocations = allocationPayloads.filter(
+ payload => ensureIsNumber(payload.size) >= 0
+ );
+ const deallocations = allocationPayloads.filter(
+ payload => ensureIsNumber(payload.size) < 0
+ );
+
+ // Now determine the unmatched allocations by building a set
+ const allocationSites = new Set(
+ allocations.map(({ memoryAddress }) => memoryAddress)
+ );
+
+ const unmatchedAllocations = deallocations.filter(
+ ({ memoryAddress }) => !allocationSites.has(memoryAddress)
+ );
+
+ // Provide a helper to log out the allocations and deallocations on failure.
+ function logAllocationsAndDeallocations() {
+ for (const { memoryAddress } of allocations) {
+ console.log("Allocations", formatHex(memoryAddress));
+ allocationSites.add(memoryAddress);
+ }
+
+ for (const { memoryAddress } of deallocations) {
+ console.log("Deallocations", formatHex(memoryAddress));
+ }
+
+ for (const { memoryAddress } of unmatchedAllocations) {
+ console.log("Deallocation with no allocation", formatHex(memoryAddress));
+ }
+ }
+
+ return {
+ allocationPayloads,
+ unmatchedAllocations,
+ logAllocationsAndDeallocations,
+ };
+}
+
+function ensureIsNumber(value) {
+ if (typeof value !== "number") {
+ throw new Error(`Expected a number: ${value}`);
+ }
+ return value;
+}
+
+function formatHex(number) {
+ return `0x${number.toString(16)}`;
+}
diff --git a/tools/profiler/tests/xpcshell/test_feature_stackwalking.js b/tools/profiler/tests/xpcshell/test_feature_stackwalking.js
new file mode 100644
index 0000000000..aa0bc86547
--- /dev/null
+++ b/tools/profiler/tests/xpcshell/test_feature_stackwalking.js
@@ -0,0 +1,48 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+/**
+ * Do a basic test to see if native frames are being collected for stackwalking. This
+ * test is fairly naive, as it does not attempt to check that these are valid symbols,
+ * only that some kind of stack walking is happening. It does this by making sure at
+ * least two native frames are collected.
+ */
+add_task(async () => {
+ const entries = 10000;
+ const interval = 1;
+ const threads = [];
+ const features = ["stackwalk"];
+
+ await Services.profiler.StartProfiler(entries, interval, features, threads);
+ const sampleIndex = await captureAtLeastOneJsSample();
+
+ const profile = await stopNowAndGetProfile();
+ const [thread] = profile.threads;
+ const { samples } = thread;
+
+ const inflatedStackFrames = getInflatedStackLocations(
+ thread,
+ samples.data[sampleIndex]
+ );
+ const nativeStack = /^0x[0-9a-f]+$/;
+
+ expectStackToContain(
+ inflatedStackFrames,
+ [
+ "(root)",
+ // There are probably more native stacks here.
+ nativeStack,
+ nativeStack,
+ // Since this is an xpcshell test we know that JavaScript will run:
+ "js::RunScript",
+ // There are probably more native stacks here.
+ nativeStack,
+ nativeStack,
+ ],
+ "Expected native stacks to be interleaved between some frame labels. There should" +
+ "be more than one native stack if stack walking is working correctly. There " +
+ "is no attempt here to determine if the memory addresses point to the correct " +
+ "symbols"
+ );
+});
diff --git a/tools/profiler/tests/xpcshell/test_get_features.js b/tools/profiler/tests/xpcshell/test_get_features.js
new file mode 100644
index 0000000000..e9bf0047c8
--- /dev/null
+++ b/tools/profiler/tests/xpcshell/test_get_features.js
@@ -0,0 +1,8 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+function run_test() {
+ var profilerFeatures = Services.profiler.GetFeatures();
+ Assert.ok(profilerFeatures != null);
+}
diff --git a/tools/profiler/tests/xpcshell/test_merged_stacks.js b/tools/profiler/tests/xpcshell/test_merged_stacks.js
new file mode 100644
index 0000000000..7f851e8de9
--- /dev/null
+++ b/tools/profiler/tests/xpcshell/test_merged_stacks.js
@@ -0,0 +1,74 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+/**
+ * Test that we correctly merge the three stack types, JS, native, and frame labels.
+ */
+add_task(async () => {
+ const entries = 10000;
+ const interval = 1;
+ const threads = [];
+ const features = ["js", "stackwalk"];
+
+ await Services.profiler.StartProfiler(entries, interval, features, threads);
+
+ // Call the following to get a nice stack in the profiler:
+ // functionA -> functionB -> functionC
+ const sampleIndex = await functionA();
+
+ const profile = await stopNowAndGetProfile();
+ const [thread] = profile.threads;
+ const { samples } = thread;
+
+ const inflatedStackFrames = getInflatedStackLocations(
+ thread,
+ samples.data[sampleIndex]
+ );
+
+ const nativeStack = /^0x[0-9a-f]+$/;
+
+ expectStackToContain(
+ inflatedStackFrames,
+ [
+ "(root)",
+ nativeStack,
+ nativeStack,
+ // There are more native stacks and frame labels here, but we know some execute
+ // and then the "js::RunScript" frame label runs.
+ "js::RunScript",
+ nativeStack,
+ nativeStack,
+ // The following regexes match a string similar to:
+ //
+ // "functionA (/gecko/obj/_tests/xpcshell/tools/profiler/tests/xpcshell/test_merged_stacks.js:47:0)"
+ // or
+ // "functionA (test_merged_stacks.js:47:0)"
+ //
+ // this matches the script location
+ // | match the line number
+ // | | match the column number
+ // v v v
+ /^functionA \(.*test_merged_stacks\.js:\d+:\d+\)$/,
+ /^functionB \(.*test_merged_stacks\.js:\d+:\d+\)$/,
+ /^functionC \(.*test_merged_stacks\.js:\d+:\d+\)$/,
+ // After the JS frames, then there are a bunch of arbitrary native stack frames
+ // that run.
+ nativeStack,
+ nativeStack,
+ ],
+ "The stack contains a few frame labels, as well as the JS functions that we called."
+ );
+});
+
+async function functionA() {
+ return functionB();
+}
+
+async function functionB() {
+ return functionC();
+}
+
+async function functionC() {
+ return captureAtLeastOneJsSample();
+}
diff --git a/tools/profiler/tests/xpcshell/test_pause.js b/tools/profiler/tests/xpcshell/test_pause.js
new file mode 100644
index 0000000000..0e621fb19f
--- /dev/null
+++ b/tools/profiler/tests/xpcshell/test_pause.js
@@ -0,0 +1,126 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+add_task(async () => {
+ Assert.ok(!Services.profiler.IsActive());
+ Assert.ok(!Services.profiler.IsPaused());
+
+ let startPromise = Services.profiler.StartProfiler(1000, 10, []);
+
+ // Default: Active and not paused.
+ Assert.ok(Services.profiler.IsActive());
+ Assert.ok(!Services.profiler.IsPaused());
+ Assert.ok(!Services.profiler.IsSamplingPaused());
+
+ await startPromise;
+ Assert.ok(Services.profiler.IsActive());
+ Assert.ok(!Services.profiler.IsPaused());
+ Assert.ok(!Services.profiler.IsSamplingPaused());
+
+ // Pause everything, implicitly pauses sampling.
+ let pausePromise = Services.profiler.Pause();
+
+ Assert.ok(Services.profiler.IsActive());
+ Assert.ok(Services.profiler.IsPaused());
+ Assert.ok(Services.profiler.IsSamplingPaused());
+
+ await pausePromise;
+ Assert.ok(Services.profiler.IsActive());
+ Assert.ok(Services.profiler.IsPaused());
+ Assert.ok(Services.profiler.IsSamplingPaused());
+
+ // While fully paused, pause and resume sampling only, no expected changes.
+ let pauseSamplingPromise = Services.profiler.PauseSampling();
+
+ Assert.ok(Services.profiler.IsActive());
+ Assert.ok(Services.profiler.IsPaused());
+ Assert.ok(Services.profiler.IsSamplingPaused());
+
+ await pauseSamplingPromise;
+ Assert.ok(Services.profiler.IsActive());
+ Assert.ok(Services.profiler.IsPaused());
+ Assert.ok(Services.profiler.IsSamplingPaused());
+
+ let resumeSamplingPromise = Services.profiler.ResumeSampling();
+
+ Assert.ok(Services.profiler.IsActive());
+ Assert.ok(Services.profiler.IsPaused());
+ Assert.ok(Services.profiler.IsSamplingPaused());
+
+ await resumeSamplingPromise;
+ Assert.ok(Services.profiler.IsActive());
+ Assert.ok(Services.profiler.IsPaused());
+ Assert.ok(Services.profiler.IsSamplingPaused());
+
+ // Resume everything.
+ let resumePromise = Services.profiler.Resume();
+
+ Assert.ok(Services.profiler.IsActive());
+ Assert.ok(!Services.profiler.IsPaused());
+ Assert.ok(!Services.profiler.IsSamplingPaused());
+
+ await resumePromise;
+ Assert.ok(Services.profiler.IsActive());
+ Assert.ok(!Services.profiler.IsPaused());
+ Assert.ok(!Services.profiler.IsSamplingPaused());
+
+ // Pause sampling only.
+ let pauseSampling2Promise = Services.profiler.PauseSampling();
+
+ Assert.ok(Services.profiler.IsActive());
+ Assert.ok(!Services.profiler.IsPaused());
+ Assert.ok(Services.profiler.IsSamplingPaused());
+
+ await pauseSampling2Promise;
+ Assert.ok(Services.profiler.IsActive());
+ Assert.ok(!Services.profiler.IsPaused());
+ Assert.ok(Services.profiler.IsSamplingPaused());
+
+ // While sampling is paused, pause everything.
+ let pause2Promise = Services.profiler.Pause();
+
+ Assert.ok(Services.profiler.IsActive());
+ Assert.ok(Services.profiler.IsPaused());
+ Assert.ok(Services.profiler.IsSamplingPaused());
+
+ await pause2Promise;
+ Assert.ok(Services.profiler.IsActive());
+ Assert.ok(Services.profiler.IsPaused());
+ Assert.ok(Services.profiler.IsSamplingPaused());
+
+ // Resume, but sampling is still paused separately.
+ let resume2promise = Services.profiler.Resume();
+
+ Assert.ok(Services.profiler.IsActive());
+ Assert.ok(!Services.profiler.IsPaused());
+ Assert.ok(Services.profiler.IsSamplingPaused());
+
+ await resume2promise;
+ Assert.ok(Services.profiler.IsActive());
+ Assert.ok(!Services.profiler.IsPaused());
+ Assert.ok(Services.profiler.IsSamplingPaused());
+
+ // Resume sampling only.
+ let resumeSampling2Promise = Services.profiler.ResumeSampling();
+
+ Assert.ok(Services.profiler.IsActive());
+ Assert.ok(!Services.profiler.IsPaused());
+ Assert.ok(!Services.profiler.IsSamplingPaused());
+
+ await resumeSampling2Promise;
+ Assert.ok(Services.profiler.IsActive());
+ Assert.ok(!Services.profiler.IsPaused());
+ Assert.ok(!Services.profiler.IsSamplingPaused());
+
+ let stopPromise = Services.profiler.StopProfiler();
+ Assert.ok(!Services.profiler.IsActive());
+ // Stopping is not pausing.
+ Assert.ok(!Services.profiler.IsPaused());
+ Assert.ok(!Services.profiler.IsSamplingPaused());
+
+ await stopPromise;
+ Assert.ok(!Services.profiler.IsActive());
+ Assert.ok(!Services.profiler.IsPaused());
+ Assert.ok(!Services.profiler.IsSamplingPaused());
+});
diff --git a/tools/profiler/tests/xpcshell/test_responsiveness.js b/tools/profiler/tests/xpcshell/test_responsiveness.js
new file mode 100644
index 0000000000..5f57173090
--- /dev/null
+++ b/tools/profiler/tests/xpcshell/test_responsiveness.js
@@ -0,0 +1,50 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+/**
+ * Test that we can measure non-zero event delays
+ */
+
+add_task(async () => {
+ const entries = 10000;
+ const interval = 1;
+ const threads = [];
+ const features = [];
+
+ await Services.profiler.StartProfiler(entries, interval, features, threads);
+
+ await functionA();
+
+ const profile = await stopNowAndGetProfile();
+ const [thread] = profile.threads;
+ const { samples } = thread;
+ const message = "eventDelay > 0 not found.";
+ let SAMPLE_STACK_SLOT = thread.samples.schema.eventDelay;
+
+ for (let i = 0; i < samples.data.length; i++) {
+ if (samples.data[i][SAMPLE_STACK_SLOT] > 0) {
+ Assert.ok(true, message);
+ return;
+ }
+ }
+ Assert.ok(false, message);
+});
+
+function doSyncWork(milliseconds) {
+ const start = Date.now();
+ while (true) {
+ this.n = 0;
+ for (let i = 0; i < 1e5; i++) {
+ this.n += Math.random();
+ }
+ if (Date.now() - start > milliseconds) {
+ return;
+ }
+ }
+}
+
+async function functionA() {
+ doSyncWork(100);
+ return captureAtLeastOneJsSample();
+}
diff --git a/tools/profiler/tests/xpcshell/test_run.js b/tools/profiler/tests/xpcshell/test_run.js
new file mode 100644
index 0000000000..0e30edfd4e
--- /dev/null
+++ b/tools/profiler/tests/xpcshell/test_run.js
@@ -0,0 +1,37 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+function run_test() {
+ Assert.ok(!Services.profiler.IsActive());
+
+ Services.profiler.StartProfiler(1000, 10, []);
+
+ Assert.ok(Services.profiler.IsActive());
+
+ do_test_pending();
+
+ do_timeout(1000, function wait() {
+ // Check text profile format
+ var profileStr = Services.profiler.GetProfile();
+ Assert.ok(profileStr.length > 10);
+
+ // check json profile format
+ var profileObj = Services.profiler.getProfileData();
+ Assert.notEqual(profileObj, null);
+ Assert.notEqual(profileObj.threads, null);
+ // We capture memory counters by default only when jemalloc is turned
+ // on (and it isn't for ASAN), so unless we can conditionalize for ASAN
+ // here we can't check that we're capturing memory counter data.
+ Assert.notEqual(profileObj.counters, null);
+ Assert.notEqual(profileObj.memory, null);
+ Assert.ok(profileObj.threads.length >= 1);
+ Assert.notEqual(profileObj.threads[0].samples, null);
+ // NOTE: The number of samples will be empty since we
+ // don't have any labels in the xpcshell code
+
+ Services.profiler.StopProfiler();
+ Assert.ok(!Services.profiler.IsActive());
+ do_test_finished();
+ });
+}
diff --git a/tools/profiler/tests/xpcshell/test_shared_library.js b/tools/profiler/tests/xpcshell/test_shared_library.js
new file mode 100644
index 0000000000..e211ca642b
--- /dev/null
+++ b/tools/profiler/tests/xpcshell/test_shared_library.js
@@ -0,0 +1,21 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+function run_test() {
+ var libs = Services.profiler.sharedLibraries;
+
+ Assert.equal(typeof libs, "object");
+ Assert.ok(Array.isArray(libs));
+ Assert.equal(typeof libs, "object");
+ Assert.ok(libs.length >= 1);
+ Assert.equal(typeof libs[0], "object");
+ Assert.equal(typeof libs[0].name, "string");
+ Assert.equal(typeof libs[0].path, "string");
+ Assert.equal(typeof libs[0].debugName, "string");
+ Assert.equal(typeof libs[0].debugPath, "string");
+ Assert.equal(typeof libs[0].arch, "string");
+ Assert.equal(typeof libs[0].start, "number");
+ Assert.equal(typeof libs[0].end, "number");
+ Assert.ok(libs[0].start <= libs[0].end);
+}
diff --git a/tools/profiler/tests/xpcshell/test_start.js b/tools/profiler/tests/xpcshell/test_start.js
new file mode 100644
index 0000000000..c9ae135eb8
--- /dev/null
+++ b/tools/profiler/tests/xpcshell/test_start.js
@@ -0,0 +1,21 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+add_task(async () => {
+ Assert.ok(!Services.profiler.IsActive());
+
+ let startPromise = Services.profiler.StartProfiler(10, 100, []);
+
+ Assert.ok(Services.profiler.IsActive());
+
+ await startPromise;
+ Assert.ok(Services.profiler.IsActive());
+
+ let stopPromise = Services.profiler.StopProfiler();
+
+ Assert.ok(!Services.profiler.IsActive());
+
+ await stopPromise;
+ Assert.ok(!Services.profiler.IsActive());
+});
diff --git a/tools/profiler/tests/xpcshell/xpcshell.ini b/tools/profiler/tests/xpcshell/xpcshell.ini
new file mode 100644
index 0000000000..a7c461b4ac
--- /dev/null
+++ b/tools/profiler/tests/xpcshell/xpcshell.ini
@@ -0,0 +1,72 @@
+[DEFAULT]
+head = head.js
+support-files =
+ ../shared-head.js
+
+[test_active_configuration.js]
+skip-if = tsan # Intermittent timeouts, bug 1781449
+[test_addProfilerMarker.js]
+[test_start.js]
+skip-if = true
+[test_get_features.js]
+[test_responsiveness.js]
+skip-if = tsan # Times out on TSan, bug 1612707
+[test_shared_library.js]
+[test_run.js]
+skip-if = true
+[test_pause.js]
+[test_enterjit_osr.js]
+[test_enterjit_osr_disabling.js]
+skip-if = !debug
+[test_enterjit_osr_enabling.js]
+skip-if = !debug
+[test_asm.js]
+[test_feature_mainthreadio.js]
+skip-if =
+ release_or_beta
+ os == "win" && socketprocess_networking
+[test_feature_fileioall.js]
+skip-if =
+ release_or_beta
+
+# The sanitizer checks appears to overwrite our own memory hooks in xpcshell tests,
+# and no allocation markers are gathered. Skip this test in that configuration.
+[test_feature_nativeallocations.js]
+skip-if =
+ os == "android" && verify # bug 1757528
+ asan
+ tsan
+ socketprocess_networking
+
+# Native stackwalking is somewhat unreliable depending on the platform.
+#
+# We don't have frame pointers on macOS release and beta, so stack walking does not
+# work. See Bug 1571216 for more details.
+#
+# Linux can be very unreliable when native stackwalking through JavaScript code.
+# See Bug 1434402 for more details.
+#
+# For sanitizer builds, there were many intermittents, and we're not getting much
+# additional coverage there, so it's better to be a bit more reliable.
+[test_feature_stackwalking.js]
+skip-if =
+ os == "mac" && release_or_beta
+ os == "linux" && release_or_beta && !debug
+ asan
+ tsan
+
+[test_feature_js.js]
+skip-if = tsan # Times out on TSan, bug 1612707
+
+# See the comment on test_feature_stackwalking.js
+[test_merged_stacks.js]
+skip-if =
+ os == "mac" && release_or_beta
+ os == "linux" && release_or_beta && !debug
+ asan
+ tsan
+
+[test_assertion_helper.js]
+[test_feature_java.js]
+skip-if =
+ os != "android"