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/* -*- 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 */
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