From 26a029d407be480d791972afb5975cf62c9360a6 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Fri, 19 Apr 2024 02:47:55 +0200 Subject: Adding upstream version 124.0.1. Signed-off-by: Daniel Baumann --- js/src/jit/CompileWrappers.h | 183 +++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 183 insertions(+) create mode 100644 js/src/jit/CompileWrappers.h (limited to 'js/src/jit/CompileWrappers.h') diff --git a/js/src/jit/CompileWrappers.h b/js/src/jit/CompileWrappers.h new file mode 100644 index 0000000000..de23af7106 --- /dev/null +++ b/js/src/jit/CompileWrappers.h @@ -0,0 +1,183 @@ +/* -*- 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 jit_CompileWrappers_h +#define jit_CompileWrappers_h + +#include + +#include "gc/Pretenuring.h" +#include "js/TypeDecls.h" +#include "vm/Realm.h" +#include "vm/RealmFuses.h" + +struct JSAtomState; + +namespace mozilla::non_crypto { +class XorShift128PlusRNG; +} + +namespace JS { +enum class TraceKind; +} + +namespace js { + +class GeckoProfilerRuntime; +class GlobalObject; +struct JSDOMCallbacks; +class PropertyName; +class StaticStrings; +struct WellKnownSymbols; + +using DOMCallbacks = struct JSDOMCallbacks; + +namespace gc { + +enum class AllocKind : uint8_t; + +class FreeSpan; + +} // namespace gc + +namespace jit { + +class JitRuntime; + +// During Ion compilation we need access to various bits of the current +// compartment, runtime and so forth. However, since compilation can run off +// thread while the main thread is mutating the VM, this access needs +// to be restricted. The classes below give the compiler an interface to access +// all necessary information in a threadsafe fashion. + +class CompileRuntime { + JSRuntime* runtime(); + + public: + static CompileRuntime* get(JSRuntime* rt); + +#ifdef JS_GC_ZEAL + const uint32_t* addressOfGCZealModeBits(); +#endif + + const JitRuntime* jitRuntime(); + + // Compilation does not occur off thread when the Gecko Profiler is enabled. + GeckoProfilerRuntime& geckoProfiler(); + + bool hadOutOfMemory(); + bool profilingScripts(); + + const JSAtomState& names(); + const PropertyName* emptyString(); + const StaticStrings& staticStrings(); + const WellKnownSymbols& wellKnownSymbols(); + const JSClass* maybeWindowProxyClass(); + + const void* mainContextPtr(); + const void* addressOfJitStackLimit(); + const void* addressOfInterruptBits(); + const void* addressOfZone(); + const void* addressOfMegamorphicCache(); + const void* addressOfMegamorphicSetPropCache(); + const void* addressOfStringToAtomCache(); + const void* addressOfLastBufferedWholeCell(); + + bool hasSeenObjectEmulateUndefinedFuseIntact(); + const void* addressOfHasSeenObjectEmulateUndefinedFuse(); + +#ifdef DEBUG + const void* addressOfIonBailAfterCounter(); +#endif + + // DOM callbacks must be threadsafe (and will hopefully be removed soon). + const DOMCallbacks* DOMcallbacks(); + + bool runtimeMatches(JSRuntime* rt); +}; + +class JitZone; + +class CompileZone { + friend class MacroAssembler; + JS::Zone* zone(); + + public: + static CompileZone* get(JS::Zone* zone); + + const JitZone* jitZone(); + + CompileRuntime* runtime(); + bool isAtomsZone(); + + const uint32_t* addressOfNeedsIncrementalBarrier(); + uint32_t* addressOfTenuredAllocCount(); + gc::FreeSpan** addressOfFreeList(gc::AllocKind allocKind); + bool allocNurseryObjects(); + bool allocNurseryStrings(); + bool allocNurseryBigInts(); + void* addressOfNurseryPosition(); + + void* addressOfNurseryAllocatedSites(); + + bool canNurseryAllocateStrings(); + bool canNurseryAllocateBigInts(); + + gc::AllocSite* catchAllAllocSite(JS::TraceKind traceKind, + gc::CatchAllAllocSite siteKind); + + bool hasRealmWithAllocMetadataBuilder(); +}; + +class CompileRealm { + JS::Realm* realm(); + + public: + static CompileRealm* get(JS::Realm* realm); + + CompileZone* zone(); + CompileRuntime* runtime(); + + const void* realmPtr() { return realm(); } + + RealmFuses& realmFuses() { return realm()->realmFuses; } + + const mozilla::non_crypto::XorShift128PlusRNG* + addressOfRandomNumberGenerator(); + + const GlobalObject* maybeGlobal(); + const uint32_t* addressOfGlobalWriteBarriered(); +}; + +class JitCompileOptions { + public: + JitCompileOptions(); + explicit JitCompileOptions(JSContext* cx); + + bool profilerSlowAssertionsEnabled() const { + return profilerSlowAssertionsEnabled_; + } + + bool offThreadCompilationAvailable() const { + return offThreadCompilationAvailable_; + } + +#ifdef DEBUG + bool ionBailAfterEnabled() const { return ionBailAfterEnabled_; } +#endif + + private: + bool profilerSlowAssertionsEnabled_; + bool offThreadCompilationAvailable_; +#ifdef DEBUG + bool ionBailAfterEnabled_ = false; +#endif +}; + +} // namespace jit +} // namespace js + +#endif // jit_CompileWrappers_h -- cgit v1.2.3