diff options
Diffstat (limited to 'js/src/gc/GCEnum.h')
| -rw-r--r-- | js/src/gc/GCEnum.h | 178 |
1 files changed, 178 insertions, 0 deletions
diff --git a/js/src/gc/GCEnum.h b/js/src/gc/GCEnum.h new file mode 100644 index 0000000000..6b1a00f4db --- /dev/null +++ b/js/src/gc/GCEnum.h @@ -0,0 +1,178 @@ +/* -*- 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/. */ + +/* + * GC-internal enum definitions. + */ + +#ifndef gc_GCEnum_h +#define gc_GCEnum_h + +#include <stdint.h> + +#include "js/MemoryFunctions.h" // JS_FOR_EACH_PUBLIC_MEMORY_USE + +namespace js { + +// [SMDOC] AllowGC template parameter +// +// AllowGC is a template parameter for functions that support both with and +// without GC operation. +// +// The CanGC variant of the function can trigger a garbage collection, and +// should set a pending exception on failure. +// +// The NoGC variant of the function cannot trigger a garbage collection, and +// should not set any pending exception on failure. This variant can be called +// in fast paths where the caller has unrooted pointers. The failure means we +// need to perform GC to allocate an object. The caller can fall back to a slow +// path that roots pointers before calling a CanGC variant of the function, +// without having to clear a pending exception. +enum AllowGC { NoGC = 0, CanGC = 1 }; + +namespace gc { + +// The phases of an incremental GC. +#define GCSTATES(D) \ + D(NotActive) \ + D(Prepare) \ + D(MarkRoots) \ + D(Mark) \ + D(Sweep) \ + D(Finalize) \ + D(Compact) \ + D(Decommit) \ + D(Finish) +enum class State { +#define MAKE_STATE(name) name, + GCSTATES(MAKE_STATE) +#undef MAKE_STATE +}; + +#define JS_FOR_EACH_ZEAL_MODE(D) \ + D(RootsChange, 1) \ + D(Alloc, 2) \ + D(VerifierPre, 4) \ + D(YieldBeforeRootMarking, 6) \ + D(GenerationalGC, 7) \ + D(YieldBeforeMarking, 8) \ + D(YieldBeforeSweeping, 9) \ + D(IncrementalMultipleSlices, 10) \ + D(IncrementalMarkingValidator, 11) \ + D(ElementsBarrier, 12) \ + D(CheckHashTablesOnMinorGC, 13) \ + D(Compact, 14) \ + D(CheckHeapAfterGC, 15) \ + D(YieldBeforeSweepingAtoms, 17) \ + D(CheckGrayMarking, 18) \ + D(YieldBeforeSweepingCaches, 19) \ + D(YieldBeforeSweepingObjects, 21) \ + D(YieldBeforeSweepingNonObjects, 22) \ + D(YieldBeforeSweepingPropMapTrees, 23) \ + D(CheckWeakMapMarking, 24) \ + D(YieldWhileGrayMarking, 25) + +enum class ZealMode { +#define ZEAL_MODE(name, value) name = value, + JS_FOR_EACH_ZEAL_MODE(ZEAL_MODE) +#undef ZEAL_MODE + Count, + Limit = Count - 1 +}; + +} /* namespace gc */ + +// Reasons we reset an ongoing incremental GC or perform a non-incremental GC. +#define GC_ABORT_REASONS(D) \ + D(None, 0) \ + D(NonIncrementalRequested, 1) \ + D(AbortRequested, 2) \ + D(Unused1, 3) \ + D(IncrementalDisabled, 4) \ + D(ModeChange, 5) \ + D(MallocBytesTrigger, 6) \ + D(GCBytesTrigger, 7) \ + D(ZoneChange, 8) \ + D(CompartmentRevived, 9) \ + D(GrayRootBufferingFailed, 10) \ + D(JitCodeBytesTrigger, 11) +enum class GCAbortReason { +#define MAKE_REASON(name, num) name = num, + GC_ABORT_REASONS(MAKE_REASON) +#undef MAKE_REASON +}; + +#define JS_FOR_EACH_INTERNAL_MEMORY_USE(_) \ + _(ArrayBufferContents) \ + _(StringContents) \ + _(ObjectElements) \ + _(ObjectSlots) \ + _(ScriptPrivateData) \ + _(MapObjectTable) \ + _(BigIntDigits) \ + _(ScopeData) \ + _(WeakMapObject) \ + _(ShapeSetForAdd) \ + _(PropMapChildren) \ + _(PropMapTable) \ + _(ModuleBindingMap) \ + _(ModuleCyclicFields) \ + _(ModuleExports) \ + _(BaselineScript) \ + _(IonScript) \ + _(ArgumentsData) \ + _(RareArgumentsData) \ + _(RegExpSharedBytecode) \ + _(RegExpSharedNamedCaptureData) \ + _(TypedArrayElements) \ + _(NativeIterator) \ + _(JitScript) \ + _(ScriptDebugScript) \ + _(BreakpointSite) \ + _(Breakpoint) \ + _(ForOfPIC) \ + _(ForOfPICStub) \ + _(WasmInstanceExports) \ + _(WasmInstanceScopes) \ + _(WasmInstanceGlobals) \ + _(WasmInstanceInstance) \ + _(WasmMemoryObservers) \ + _(WasmGlobalCell) \ + _(WasmResolveResponseClosure) \ + _(WasmModule) \ + _(WasmTableTable) \ + _(WasmExceptionData) \ + _(WasmTagType) \ + _(FileObjectFile) \ + _(Debugger) \ + _(DebuggerFrameGeneratorInfo) \ + _(DebuggerFrameIterData) \ + _(DebuggerOnStepHandler) \ + _(DebuggerOnPopHandler) \ + _(ICUObject) \ + _(FinalizationRegistryRecordVector) \ + _(FinalizationRegistryRegistrations) \ + _(FinalizationRecordVector) \ + _(TrackedAllocPolicy) \ + _(SharedArrayRawBuffer) \ + _(XDRBufferElements) \ + _(GlobalObjectData) \ + _(ProxyExternalValueArray) \ + _(WasmTrailerBlock) + +#define JS_FOR_EACH_MEMORY_USE(_) \ + JS_FOR_EACH_PUBLIC_MEMORY_USE(_) \ + JS_FOR_EACH_INTERNAL_MEMORY_USE(_) + +enum class MemoryUse : uint8_t { +#define DEFINE_MEMORY_USE(Name) Name, + JS_FOR_EACH_MEMORY_USE(DEFINE_MEMORY_USE) +#undef DEFINE_MEMORY_USE +}; + +} /* namespace js */ + +#endif /* gc_GCEnum_h */ |