#include <young-generation-marking-visitor.h>

Inheritance diagram for v8::internal::YoungGenerationMarkingVisitor< marking_mode >:

Collaboration diagram for v8::internal::YoungGenerationMarkingVisitor< marking_mode >:

Public Types
enum class	ObjectVisitationMode { kVisitDirectly , kPushToWorklist }

enum class	SlotTreatmentMode { kReadOnly , kReadWrite }

using	Base = NewSpaceVisitor<YoungGenerationMarkingVisitor<marking_mode>>

Public Member Functions
	YoungGenerationMarkingVisitor (Heap heap, PretenuringHandler::PretenuringFeedbackMap local_pretenuring_feedback)

	~YoungGenerationMarkingVisitor () override

	YoungGenerationMarkingVisitor (const YoungGenerationMarkingVisitor &)=delete

YoungGenerationMarkingVisitor &	operator= (const YoungGenerationMarkingVisitor &)=delete

V8_INLINE void	VisitPointers (Tagged< HeapObject > host, ObjectSlot start, ObjectSlot end) final

V8_INLINE void	VisitPointers (Tagged< HeapObject > host, MaybeObjectSlot start, MaybeObjectSlot end) final

V8_INLINE void	VisitPointer (Tagged< HeapObject > host, ObjectSlot p) final

V8_INLINE void	VisitPointer (Tagged< HeapObject > host, MaybeObjectSlot p) final

V8_INLINE size_t	VisitJSArrayBuffer (Tagged< Map > map, Tagged< JSArrayBuffer > object, MaybeObjectSize)

template<typename T , typename TBodyDescriptor = typename T::BodyDescriptor>
V8_INLINE size_t	VisitJSObjectSubclass (Tagged< Map > map, Tagged< T > object, MaybeObjectSize)

V8_INLINE size_t	VisitEphemeronHashTable (Tagged< Map > map, Tagged< EphemeronHashTable > table, MaybeObjectSize)

V8_INLINE void	VisitCppHeapPointer (Tagged< HeapObject > host, CppHeapPointerSlot slot) override

template<ObjectVisitationMode visitation_mode, SlotTreatmentMode slot_treatment_mode, typename TSlot >
V8_INLINE bool	VisitObjectViaSlot (TSlot slot)

template<typename TSlot >
V8_INLINE bool	VisitObjectViaSlotInRememberedSet (TSlot slot)

MarkingWorklists::Local &	marking_worklists_local ()

V8_INLINE void	IncrementLiveBytesCached (MutablePageMetadata *chunk, intptr_t by)

void	PublishWorklists ()

template<typename T , typename TBodyDescriptor >
size_t	VisitJSObjectSubclass (Tagged< Map > map, Tagged< T > object, MaybeObjectSize maybe_object_size)

template<typename TSlot >
void	VisitPointersImpl (Tagged< HeapObject > host, TSlot start, TSlot end)

Public Member Functions inherited from v8::internal::NewSpaceVisitor< YoungGenerationMarkingVisitor< marking_mode > >
V8_INLINE	NewSpaceVisitor (Isolate *isolate)

void	VisitInstructionStreamPointer (Tagged< Code >, InstructionStreamSlot) final

void	VisitCodeTarget (Tagged< InstructionStream > host, RelocInfo *) final

void	VisitEmbeddedPointer (Tagged< InstructionStream > host, RelocInfo *) final

void	VisitMapPointer (Tagged< HeapObject >) override

Public Member Functions inherited from v8::internal::ConcurrentHeapVisitor< YoungGenerationMarkingVisitor< marking_mode > >
V8_INLINE	ConcurrentHeapVisitor (Isolate *isolate)

Tagged< T >	Cast (Tagged< HeapObject > object, const Heap *heap)

size_t	VisitStringLocked (Tagged< T > object)

Public Member Functions inherited from v8::internal::HeapVisitor< YoungGenerationMarkingVisitor< marking_mode > >
	HeapVisitor (LocalIsolate *isolate)

	HeapVisitor (Isolate *isolate)

	HeapVisitor (Heap *heap)

V8_INLINE size_t	Visit (Tagged< HeapObject > object)

V8_INLINE size_t	Visit (Tagged< Map > map, Tagged< HeapObject > object)

V8_INLINE size_t	Visit (Tagged< Map > map, Tagged< HeapObject > object, int object_size)

void	VisitMapPointerIfNeeded (Tagged< HeapObject > host)

size_t	VisitJSObjectSubclass (Tagged< Map > map, Tagged< T > object, MaybeObjectSize maybe_object_size)

size_t	VisitWithBodyDescriptor (Tagged< Map > map, Tagged< T > object, MaybeObjectSize maybe_object_size)

Tagged< T >	Cast (Tagged< HeapObject > object, const Heap *heap)

Public Member Functions inherited from v8::internal::ObjectVisitorWithCageBases
	ObjectVisitorWithCageBases (PtrComprCageBase cage_base, PtrComprCageBase code_cage_base)

	ObjectVisitorWithCageBases (Isolate *isolate)

	ObjectVisitorWithCageBases (Heap *heap)

PtrComprCageBase	cage_base () const

PtrComprCageBase	code_cage_base () const

Public Member Functions inherited from v8::internal::ObjectVisitor
virtual	~ObjectVisitor ()=default

virtual void	VisitCustomWeakPointers (Tagged< HeapObject > host, ObjectSlot start, ObjectSlot end)

virtual void	VisitCustomWeakPointer (Tagged< HeapObject > host, ObjectSlot p)

virtual void	VisitEphemeron (Tagged< HeapObject > host, int index, ObjectSlot key, ObjectSlot value)

void	VisitRelocInfo (Tagged< InstructionStream > host, RelocIterator *it)

virtual void	VisitExternalReference (Tagged< InstructionStream > host, RelocInfo *rinfo)

virtual void	VisitInternalReference (Tagged< InstructionStream > host, RelocInfo *rinfo)

virtual void	VisitOffHeapTarget (Tagged< InstructionStream > host, RelocInfo *rinfo)

virtual void	VisitExternalPointer (Tagged< HeapObject > host, ExternalPointerSlot slot)

virtual void	VisitIndirectPointer (Tagged< HeapObject > host, IndirectPointerSlot slot, IndirectPointerMode mode)

virtual void	VisitProtectedPointer (Tagged< TrustedObject > host, ProtectedPointerSlot slot)

virtual void	VisitProtectedPointer (Tagged< TrustedObject > host, ProtectedMaybeObjectSlot slot)

virtual void	VisitTrustedPointerTableEntry (Tagged< HeapObject > host, IndirectPointerSlot slot)

virtual void	VisitJSDispatchTableEntry (Tagged< HeapObject > host, JSDispatchHandle handle)

Static Public Member Functions
static constexpr bool	EnableConcurrentVisitation ()

static V8_INLINE constexpr bool	CanEncounterFillerOrFreeSpace ()

Static Public Member Functions inherited from v8::internal::ConcurrentHeapVisitor< YoungGenerationMarkingVisitor< marking_mode > >
static V8_INLINE constexpr bool	EnableConcurrentVisitation ()

Private Member Functions
bool	TryMark (Tagged< HeapObject > obj)

template<typename TSlot >
V8_INLINE void	VisitPointersImpl (Tagged< HeapObject > host, TSlot start, TSlot end)

Private Attributes
std::array< std::pair< MutablePageMetadata *, size_t >, kNumEntries >	live_bytes_data_

Isolate *const	isolate_

MarkingWorklists::Local	marking_worklists_local_

EphemeronRememberedSet::TableList::Local	ephemeron_table_list_local_

PretenuringHandler *const	pretenuring_handler_

PretenuringHandler::PretenuringFeedbackMap *const	local_pretenuring_feedback_

const bool	shortcut_strings_

Static Private Attributes
static constexpr size_t	kNumEntries = 128

static constexpr size_t	kEntriesMask = kNumEntries - 1

Additional Inherited Members
Protected Member Functions inherited from v8::internal::NewSpaceVisitor< YoungGenerationMarkingVisitor< marking_mode > >
size_t	VisitNativeContext (Tagged< Map >, Tagged< NativeContext >, MaybeObjectSize)

size_t	VisitBytecodeArray (Tagged< Map >, Tagged< BytecodeArray >, MaybeObjectSize)

size_t	VisitSharedFunctionInfo (Tagged< Map > map, Tagged< SharedFunctionInfo >, MaybeObjectSize)

size_t	VisitWeakCell (Tagged< Map >, Tagged< WeakCell >, MaybeObjectSize)

Protected Member Functions inherited from v8::internal::HeapVisitor< YoungGenerationMarkingVisitor< marking_mode > >
V8_INLINE size_t	Visit (Tagged< Map > map, Tagged< HeapObject > object, MaybeObjectSize maybe_object_size)

V8_INLINE void	VisitMapPointerIfNeeded (Tagged< HeapObject > host)

YoungGenerationMarkingVisitor< marking_mode > *	concrete_visitor ()

const YoungGenerationMarkingVisitor< marking_mode > *	concrete_visitor () const

V8_INLINE size_t	VisitShortcutCandidate (Tagged< Map > map, Tagged< ConsString > object, MaybeObjectSize maybe_object_size)

V8_INLINE size_t	VisitJSObjectFast (Tagged< Map > map, Tagged< JSObject > object, MaybeObjectSize maybe_object_size)

V8_INLINE size_t	VisitJSApiObject (Tagged< Map > map, Tagged< JSObject > object, MaybeObjectSize maybe_object_size)

V8_INLINE size_t	VisitStruct (Tagged< Map > map, Tagged< HeapObject > object, MaybeObjectSize maybe_object_size)

V8_INLINE size_t	VisitFiller (Tagged< Map > map, Tagged< HeapObject > object, MaybeObjectSize maybe_object_size)

V8_INLINE size_t	VisitFreeSpace (Tagged< Map > map, Tagged< FreeSpace > object, MaybeObjectSize maybe_object_size)

V8_INLINE size_t	VisitJSObjectSubclass (Tagged< Map > map, Tagged< T > object, MaybeObjectSize maybe_object_size)

V8_INLINE size_t	VisitWithBodyDescriptor (Tagged< Map > map, Tagged< T > object, MaybeObjectSize maybe_object_size)

std::optional< Tagged< Object > >	GetObjectFilterReadOnlyAndSmiFast (TSlot slot) const

Static Protected Member Functions inherited from v8::internal::NewSpaceVisitor< YoungGenerationMarkingVisitor< marking_mode > >
static V8_INLINE constexpr bool	ShouldVisitMapPointer ()

Static Protected Member Functions inherited from v8::internal::ConcurrentHeapVisitor< YoungGenerationMarkingVisitor< marking_mode > >
static V8_INLINE Tagged< T >	Cast (Tagged< HeapObject > object, const Heap *heap)

Static Protected Member Functions inherited from v8::internal::HeapVisitor< YoungGenerationMarkingVisitor< marking_mode > >
static V8_INLINE constexpr bool	ShouldVisitMapPointer ()

static V8_INLINE constexpr bool	ShouldVisitReadOnlyMapPointer ()

static V8_INLINE constexpr bool	CanEncounterFillerOrFreeSpace ()

static V8_INLINE constexpr bool	ShouldUseUncheckedCast ()

static V8_INLINE constexpr bool	EnableConcurrentVisitation ()

static V8_INLINE constexpr bool	UsePrecomputedObjectSize ()

static V8_INLINE constexpr bool	ShouldVisitFullJSObject ()

static V8_INLINE Tagged< T >	Cast (Tagged< HeapObject > object, const Heap *heap)

Protected Attributes inherited from v8::internal::HeapVisitor< YoungGenerationMarkingVisitor< marking_mode > >
const Heap *	heap_

Detailed Description

template<YoungGenerationMarkingVisitationMode marking_mode>
class v8::internal::YoungGenerationMarkingVisitor< marking_mode >

Definition at line 22 of file young-generation-marking-visitor.h.

Member Typedef Documentation

◆ Base

template<YoungGenerationMarkingVisitationMode marking_mode>

using v8::internal::YoungGenerationMarkingVisitor< marking_mode >::Base = NewSpaceVisitor<YoungGenerationMarkingVisitor<marking_mode>>

Definition at line 25 of file young-generation-marking-visitor.h.

Member Enumeration Documentation

◆ ObjectVisitationMode

template<YoungGenerationMarkingVisitationMode marking_mode>

enum class v8::internal::YoungGenerationMarkingVisitor::ObjectVisitationMode

strong

Enumerator
kVisitDirectly
kPushToWorklist

Definition at line 27 of file young-generation-marking-visitor.h.

◆ SlotTreatmentMode

template<YoungGenerationMarkingVisitationMode marking_mode>

enum class v8::internal::YoungGenerationMarkingVisitor::SlotTreatmentMode

strong

Enumerator
kReadOnly
kReadWrite

Definition at line 32 of file young-generation-marking-visitor.h.

Constructor & Destructor Documentation

◆ YoungGenerationMarkingVisitor() [1/2]

template<YoungGenerationMarkingVisitationMode marking_mode>

v8::internal::YoungGenerationMarkingVisitor< marking_mode >::YoungGenerationMarkingVisitor	(	Heap *	heap,
		PretenuringHandler::PretenuringFeedbackMap *	local_pretenuring_feedback )

Definition at line 25 of file young-generation-marking-visitor-inl.h.

◆ ~YoungGenerationMarkingVisitor()

template<YoungGenerationMarkingVisitationMode marking_mode>

v8::internal::YoungGenerationMarkingVisitor< marking_mode >::~YoungGenerationMarkingVisitor ( )

override

Definition at line 43 of file young-generation-marking-visitor-inl.h.

◆ YoungGenerationMarkingVisitor() [2/2]

template<YoungGenerationMarkingVisitationMode marking_mode>

v8::internal::YoungGenerationMarkingVisitor< marking_mode >::YoungGenerationMarkingVisitor ( const YoungGenerationMarkingVisitor< marking_mode > & )

delete

Member Function Documentation

◆ CanEncounterFillerOrFreeSpace()

template<YoungGenerationMarkingVisitationMode marking_mode>

static V8_INLINE constexpr bool v8::internal::YoungGenerationMarkingVisitor< marking_mode >::CanEncounterFillerOrFreeSpace ( )

inlinestaticconstexpr

Definition at line 106 of file young-generation-marking-visitor.h.

◆ EnableConcurrentVisitation()

template<YoungGenerationMarkingVisitationMode marking_mode>

static constexpr bool v8::internal::YoungGenerationMarkingVisitor< marking_mode >::EnableConcurrentVisitation ( )

inlinestaticconstexpr

Definition at line 47 of file young-generation-marking-visitor.h.

◆ IncrementLiveBytesCached()

template<YoungGenerationMarkingVisitationMode marking_mode>

V8_INLINE void v8::internal::YoungGenerationMarkingVisitor< marking_mode >::IncrementLiveBytesCached	(	MutablePageMetadata *	chunk,
		intptr_t	by )

Definition at line 275 of file young-generation-marking-visitor-inl.h.

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◆ marking_worklists_local()

template<YoungGenerationMarkingVisitationMode marking_mode>

MarkingWorklists::Local & v8::internal::YoungGenerationMarkingVisitor< marking_mode >::marking_worklists_local ( )

inline

Definition at line 94 of file young-generation-marking-visitor.h.

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◆ operator=()

template<YoungGenerationMarkingVisitationMode marking_mode>

YoungGenerationMarkingVisitor & v8::internal::YoungGenerationMarkingVisitor< marking_mode >::operator= ( const YoungGenerationMarkingVisitor< marking_mode > & )

delete

◆ PublishWorklists()

template<YoungGenerationMarkingVisitationMode marking_mode>

void v8::internal::YoungGenerationMarkingVisitor< marking_mode >::PublishWorklists ( )

inline

Definition at line 101 of file young-generation-marking-visitor.h.

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◆ TryMark()

template<YoungGenerationMarkingVisitationMode marking_mode>

bool v8::internal::YoungGenerationMarkingVisitor< marking_mode >::TryMark ( Tagged< HeapObject > obj )

inlineprivate

Definition at line 111 of file young-generation-marking-visitor.h.

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◆ VisitCppHeapPointer()

template<YoungGenerationMarkingVisitationMode marking_mode>

void v8::internal::YoungGenerationMarkingVisitor< marking_mode >::VisitCppHeapPointer	(	Tagged< HeapObject >	host,
		CppHeapPointerSlot	slot )

overridevirtual

Reimplemented from v8::internal::ObjectVisitor.

Definition at line 57 of file young-generation-marking-visitor-inl.h.

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◆ VisitEphemeronHashTable()

template<YoungGenerationMarkingVisitationMode marking_mode>

size_t v8::internal::YoungGenerationMarkingVisitor< marking_mode >::VisitEphemeronHashTable	(	Tagged< Map >	map,
		Tagged< EphemeronHashTable >	table,
		MaybeObjectSize	)

Definition at line 91 of file young-generation-marking-visitor-inl.h.

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◆ VisitJSArrayBuffer()

template<YoungGenerationMarkingVisitationMode marking_mode>

size_t v8::internal::YoungGenerationMarkingVisitor< marking_mode >::VisitJSArrayBuffer	(	Tagged< Map >	map,
		Tagged< JSArrayBuffer >	object,
		MaybeObjectSize	maybe_object_size )

Definition at line 71 of file young-generation-marking-visitor-inl.h.

◆ VisitJSObjectSubclass() [1/2]

template<YoungGenerationMarkingVisitationMode marking_mode>

template<typename T , typename TBodyDescriptor >

size_t v8::internal::YoungGenerationMarkingVisitor< marking_mode >::VisitJSObjectSubclass	(	Tagged< Map >	map,
		Tagged< T >	object,
		MaybeObjectSize	maybe_object_size )

Definition at line 80 of file young-generation-marking-visitor-inl.h.

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◆ VisitJSObjectSubclass() [2/2]

template<YoungGenerationMarkingVisitationMode marking_mode>

template<typename T , typename TBodyDescriptor = typename T::BodyDescriptor>

V8_INLINE size_t v8::internal::YoungGenerationMarkingVisitor< marking_mode >::VisitJSObjectSubclass	(	Tagged< Map >	map,
		Tagged< T >	object,
		MaybeObjectSize	)

◆ VisitObjectViaSlot()

template<YoungGenerationMarkingVisitationMode marking_mode>

template<typename YoungGenerationMarkingVisitor< marking_mode >::ObjectVisitationMode visitation_mode, typename YoungGenerationMarkingVisitor< marking_mode >::SlotTreatmentMode slot_treatment_mode, typename TSlot >

V8_INLINE bool v8::internal::YoungGenerationMarkingVisitor< marking_mode >::VisitObjectViaSlot ( TSlot slot )

Definition at line 173 of file young-generation-marking-visitor-inl.h.

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◆ VisitObjectViaSlotInRememberedSet()

template<YoungGenerationMarkingVisitationMode marking_mode>

template<typename TSlot >

V8_INLINE bool v8::internal::YoungGenerationMarkingVisitor< marking_mode >::VisitObjectViaSlotInRememberedSet ( TSlot slot )

Definition at line 155 of file young-generation-marking-visitor-inl.h.

◆ VisitPointer() [1/2]

template<YoungGenerationMarkingVisitationMode marking_mode>

V8_INLINE void v8::internal::YoungGenerationMarkingVisitor< marking_mode >::VisitPointer	(	Tagged< HeapObject >	host,
		MaybeObjectSlot	p )

inlinefinalvirtual

Reimplemented from v8::internal::ObjectVisitor.

Definition at line 62 of file young-generation-marking-visitor.h.

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◆ VisitPointer() [2/2]

template<YoungGenerationMarkingVisitationMode marking_mode>

V8_INLINE void v8::internal::YoungGenerationMarkingVisitor< marking_mode >::VisitPointer	(	Tagged< HeapObject >	host,
		ObjectSlot	p )

inlinefinalvirtual

Reimplemented from v8::internal::ObjectVisitor.

Definition at line 59 of file young-generation-marking-visitor.h.

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◆ VisitPointers() [1/2]

template<YoungGenerationMarkingVisitationMode marking_mode>

V8_INLINE void v8::internal::YoungGenerationMarkingVisitor< marking_mode >::VisitPointers	(	Tagged< HeapObject >	host,
		MaybeObjectSlot	start,
		MaybeObjectSlot	end )

inlinefinalvirtual

Implements v8::internal::ObjectVisitor.

Definition at line 55 of file young-generation-marking-visitor.h.

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◆ VisitPointers() [2/2]

template<YoungGenerationMarkingVisitationMode marking_mode>

V8_INLINE void v8::internal::YoungGenerationMarkingVisitor< marking_mode >::VisitPointers	(	Tagged< HeapObject >	host,
		ObjectSlot	start,
		ObjectSlot	end )