#include <page-metadata.h>

Inheritance diagram for v8::internal::PageMetadata:

Collaboration diagram for v8::internal::PageMetadata:

Public Member Functions
	PageMetadata (Heap heap, BaseSpace space, size_t size, Address area_start, Address area_end, VirtualMemory reservation)

V8_EXPORT_PRIVATE void	MarkNeverAllocateForTesting ()

void	MarkEvacuationCandidate ()

void	ClearEvacuationCandidate ()

PageMetadata *	next_page ()

PageMetadata *	prev_page ()

const PageMetadata *	next_page () const

const PageMetadata *	prev_page () const

template<typename Callback >
void	ForAllFreeListCategories (Callback callback)

V8_EXPORT_PRIVATE size_t	AvailableInFreeList ()

size_t	AvailableInFreeListFromAllocatedBytes ()

FreeListCategory *	free_list_category (FreeListCategoryType type)

V8_EXPORT_PRIVATE void	CreateBlackArea (Address start, Address end)

void	DestroyBlackArea (Address start, Address end)

void	InitializeFreeListCategories ()

void	AllocateFreeListCategories ()

void	ReleaseFreeListCategories ()

ActiveSystemPages *	active_system_pages ()

template<RememberedSetType remembered_set>
void	ClearTypedSlotsInFreeMemory (const TypedSlotSet::FreeRangesMap &ranges)

template<RememberedSetType remembered_set>
void	AssertNoTypedSlotsInFreeMemory (const TypedSlotSet::FreeRangesMap &ranges)

Public Member Functions inherited from v8::internal::MutablePageMetadata
	MutablePageMetadata (Heap heap, BaseSpace space, size_t size, Address area_start, Address area_end, VirtualMemory reservation, PageSize page_size)

MemoryChunk::MainThreadFlags	InitialFlags (Executability executable) const

size_t	BucketsInSlotSet () const

V8_INLINE void	SetOldGenerationPageFlags (MarkingMode marking_mode)

void	SetYoungGenerationPageFlags (MarkingMode marking_mode)

base::Mutex &	mutex ()

const base::Mutex &	mutex () const

base::Mutex &	object_mutex ()

const base::Mutex &	object_mutex () const

void	set_concurrent_sweeping_state (ConcurrentSweepingState state)

ConcurrentSweepingState	concurrent_sweeping_state ()

bool	SweepingDone () const

template<RememberedSetType type, AccessMode access_mode = AccessMode::ATOMIC>
SlotSet *	slot_set ()

template<RememberedSetType type, AccessMode access_mode = AccessMode::ATOMIC>
const SlotSet *	slot_set () const

template<RememberedSetType type, AccessMode access_mode = AccessMode::ATOMIC>
TypedSlotSet *	typed_slot_set ()

template<RememberedSetType type, AccessMode access_mode = AccessMode::ATOMIC>
const TypedSlotSet *	typed_slot_set () const

template<RememberedSetType type>
bool	ContainsSlots () const

bool	ContainsAnySlots () const

V8_EXPORT_PRIVATE SlotSet *	AllocateSlotSet (RememberedSetType type)

void	ReleaseSlotSet (RememberedSetType type)

TypedSlotSet *	AllocateTypedSlotSet (RememberedSetType type)

void	ReleaseTypedSlotSet (RememberedSetType type)

template<RememberedSetType type>
SlotSet *	ExtractSlotSet ()

template<RememberedSetType type>
TypedSlotSet *	ExtractTypedSlotSet ()

int	ComputeFreeListsLength ()

V8_EXPORT_PRIVATE size_t	CommittedPhysicalMemory () const

MarkingProgressTracker &	marking_progress_tracker ()

const MarkingProgressTracker &	marking_progress_tracker () const

void	IncrementExternalBackingStoreBytes (ExternalBackingStoreType type, size_t amount)

void	DecrementExternalBackingStoreBytes (ExternalBackingStoreType type, size_t amount)

size_t	ExternalBackingStoreBytes (ExternalBackingStoreType type) const

Space *	owner () const

AllocationSpace	owner_identity () const

heap::ListNode< MutablePageMetadata > &	list_node ()

const heap::ListNode< MutablePageMetadata > &	list_node () const

PossiblyEmptyBuckets *	possibly_empty_buckets ()

void	ReleaseAllocatedMemoryNeededForWritableChunk ()

void	IncreaseAllocatedLabSize (size_t bytes)

void	DecreaseAllocatedLabSize (size_t bytes)

size_t	AllocatedLabSize () const

void	IncrementAgeInNewSpace ()

void	ResetAgeInNewSpace ()

size_t	AgeInNewSpace () const

void	ResetAllocationStatistics ()

void	ResetAllocationStatisticsForPromotedPage ()

MarkingBitmap *	marking_bitmap ()

const MarkingBitmap *	marking_bitmap () const

size_t	live_bytes () const

void	SetLiveBytes (size_t value)

void	IncrementLiveBytesAtomically (intptr_t diff)

template<AccessMode mode = AccessMode::NON_ATOMIC>
void	ClearLiveness ()

bool	IsLivenessClear () const

bool	IsLargePage ()

Public Member Functions inherited from v8::internal::MemoryChunkMetadata
	MemoryChunkMetadata (Heap heap, BaseSpace space, size_t chunk_size, Address area_start, Address area_end, VirtualMemory reservation)

	~MemoryChunkMetadata ()

Address	ChunkAddress () const

Address	MetadataAddress () const

size_t	Offset (Address a) const

size_t	size () const

void	set_size (size_t size)

Address	area_start () const

Address	area_end () const

void	set_area_end (Address area_end)

size_t	area_size () const

Heap *	heap () const

BaseSpace *	owner () const

void	set_owner (BaseSpace *space)

bool	InSharedSpace () const

bool	InTrustedSpace () const

bool	IsWritable () const

bool	IsMutablePageMetadata () const

bool	Contains (Address addr) const

bool	ContainsLimit (Address addr) const

size_t	wasted_memory () const

void	add_wasted_memory (size_t waste)

size_t	allocated_bytes () const

Address	HighWaterMark () const

VirtualMemory *	reserved_memory ()

void	ResetAllocationStatistics ()

void	IncreaseAllocatedBytes (size_t bytes)

void	DecreaseAllocatedBytes (size_t bytes)

MemoryChunk *	Chunk ()

const MemoryChunk *	Chunk () const

Static Public Member Functions
static V8_INLINE PageMetadata *	FromAddress (Address addr)

static V8_INLINE PageMetadata *	FromHeapObject (Tagged< HeapObject > o)

static PageMetadata *	cast (MemoryChunkMetadata *metadata)

static PageMetadata *	cast (MutablePageMetadata *metadata)

static V8_INLINE PageMetadata *	FromAllocationAreaAddress (Address address)

static bool	OnSamePage (Address address1, Address address2)

static bool	IsAlignedToPageSize (Address addr)

static PageMetadata *	ConvertNewToOld (PageMetadata *old_page, FreeMode free_mode)

Static Public Member Functions inherited from v8::internal::MutablePageMetadata
static PageAllocator::Permission	GetCodeModificationPermission ()

static void	MoveExternalBackingStoreBytes (ExternalBackingStoreType type, MutablePageMetadata from, MutablePageMetadata to, size_t amount)

static V8_INLINE MutablePageMetadata *	FromAddress (Address a)

static V8_INLINE MutablePageMetadata *	FromHeapObject (Tagged< HeapObject > o)

static MutablePageMetadata *	cast (MemoryChunkMetadata *metadata)

static const MutablePageMetadata *	cast (const MemoryChunkMetadata *metadata)

Static Public Member Functions inherited from v8::internal::MemoryChunkMetadata
static V8_INLINE MemoryChunkMetadata *	FromAddress (Address a)

static V8_INLINE MemoryChunkMetadata *	FromHeapObject (Tagged< HeapObject > o)

static V8_INLINE MemoryChunkMetadata *	FromHeapObject (const HeapObjectLayout *o)

static V8_INLINE void	UpdateHighWaterMark (Address mark)

Friends
class	MemoryAllocator

Additional Inherited Members
Public Types inherited from v8::internal::MutablePageMetadata
enum class	ConcurrentSweepingState : intptr_t { kDone , kPendingSweeping , kPendingIteration , kInProgress }

Static Public Attributes inherited from v8::internal::MutablePageMetadata
static const int	kPageSize = kRegularPageSize

Protected Member Functions inherited from v8::internal::MutablePageMetadata
void	ReleaseAllAllocatedMemory ()

template<RememberedSetType type, AccessMode access_mode = AccessMode::ATOMIC>
void	set_slot_set (SlotSet *slot_set)

template<RememberedSetType type, AccessMode access_mode = AccessMode::ATOMIC>
void	set_typed_slot_set (TypedSlotSet *typed_slot_set)

Protected Attributes inherited from v8::internal::MutablePageMetadata
SlotSet *	slot_set_ [NUMBER_OF_REMEMBERED_SET_TYPES] = {nullptr}

TypedSlotSet *	typed_slot_set_ [NUMBER_OF_REMEMBERED_SET_TYPES] = {nullptr}

MarkingProgressTracker	marking_progress_tracker_

std::atomic< intptr_t >	live_byte_count_ {0}

std::atomic< ConcurrentSweepingState >	concurrent_sweeping_

std::atomic< size_t >	external_backing_store_bytes_ [static_cast< int >(ExternalBackingStoreType::kNumValues)] = {0}

heap::ListNode< MutablePageMetadata >	list_node_

FreeListCategory **	categories_ = nullptr

PossiblyEmptyBuckets	possibly_empty_buckets_

std::unique_ptr< ActiveSystemPages >	active_system_pages_

size_t	allocated_lab_size_ = 0

size_t	age_in_new_space_ = 0

MarkingBitmap	marking_bitmap_

base::Mutex	mutex_

base::Mutex	object_mutex_

Protected Attributes inherited from v8::internal::MemoryChunkMetadata
VirtualMemory	reservation_

size_t	allocated_bytes_

size_t	wasted_memory_ = 0

std::atomic< intptr_t >	high_water_mark_

size_t	size_

Address	area_end_

Heap *	heap_

Address	area_start_

std::atomic< BaseSpace * >	owner_

Detailed Description

Definition at line 24 of file page-metadata.h.

Constructor & Destructor Documentation

◆ PageMetadata()

v8::internal::PageMetadata::PageMetadata	(	Heap *	heap,
		BaseSpace *	space,
		size_t	size,
		Address	area_start,
		Address	area_end,
		VirtualMemory	reservation )

Definition at line 14 of file page-metadata.cc.

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Member Function Documentation

◆ active_system_pages()

ActiveSystemPages * v8::internal::PageMetadata::active_system_pages ( )

inline

Definition at line 103 of file page-metadata.h.

◆ AllocateFreeListCategories()

void v8::internal::PageMetadata::AllocateFreeListCategories ( )

Definition at line 22 of file page-metadata.cc.

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◆ AssertNoTypedSlotsInFreeMemory()

template<RememberedSetType remembered_set>

void v8::internal::PageMetadata::AssertNoTypedSlotsInFreeMemory ( const TypedSlotSet::FreeRangesMap & ranges )

inline

Definition at line 116 of file page-metadata.h.

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◆ AvailableInFreeList()

size_t v8::internal::PageMetadata::AvailableInFreeList ( )

Definition at line 71 of file page-metadata.cc.

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◆ AvailableInFreeListFromAllocatedBytes()

size_t v8::internal::PageMetadata::AvailableInFreeListFromAllocatedBytes ( )

inline

Definition at line 87 of file page-metadata.h.

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◆ cast() [1/2]

static PageMetadata * v8::internal::PageMetadata::cast ( MemoryChunkMetadata * metadata )

inlinestatic

Definition at line 35 of file page-metadata.h.

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◆ cast() [2/2]

static PageMetadata * v8::internal::PageMetadata::cast ( MutablePageMetadata * metadata )

inlinestatic

Definition at line 39 of file page-metadata.h.

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◆ ClearEvacuationCandidate()

void v8::internal::PageMetadata::ClearEvacuationCandidate ( )

inline

Definition at line 50 of file page-metadata-inl.h.

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◆ ClearTypedSlotsInFreeMemory()

template<RememberedSetType remembered_set>

void v8::internal::PageMetadata::ClearTypedSlotsInFreeMemory ( const TypedSlotSet::FreeRangesMap & ranges )

inline

Definition at line 108 of file page-metadata.h.

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◆ ConvertNewToOld()

PageMetadata * v8::internal::PageMetadata::ConvertNewToOld	(	PageMetadata *	old_page,
		FreeMode	free_mode )

static

Definition at line 54 of file page-metadata.cc.

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◆ CreateBlackArea()

void v8::internal::PageMetadata::CreateBlackArea	(	Address	start,
		Address	end )

Definition at line 87 of file page-metadata.cc.

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◆ DestroyBlackArea()

void v8::internal::PageMetadata::DestroyBlackArea	(	Address	start,
		Address	end )

Definition at line 102 of file page-metadata.cc.

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◆ ForAllFreeListCategories()

template<typename Callback >

void v8::internal::PageMetadata::ForAllFreeListCategories ( Callback callback )

inline

Definition at line 35 of file page-metadata-inl.h.

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◆ free_list_category()

FreeListCategory * v8::internal::PageMetadata::free_list_category ( FreeListCategoryType type )

inline

Definition at line 92 of file page-metadata.h.

◆ FromAddress()

PageMetadata * v8::internal::PageMetadata::FromAddress ( Address addr )

static

Definition at line 19 of file page-metadata-inl.h.

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◆ FromAllocationAreaAddress()

PageMetadata * v8::internal::PageMetadata::FromAllocationAreaAddress ( Address address )

static

Definition at line 30 of file page-metadata-inl.h.

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◆ FromHeapObject()

PageMetadata * v8::internal::PageMetadata::FromHeapObject ( Tagged< HeapObject > o )

static

Definition at line 25 of file page-metadata-inl.h.

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◆ InitializeFreeListCategories()

void v8::internal::PageMetadata::InitializeFreeListCategories ( )

Definition at line 33 of file page-metadata.cc.

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◆ IsAlignedToPageSize()

static bool v8::internal::PageMetadata::IsAlignedToPageSize ( Address addr )

inlinestatic

Definition at line 57 of file page-metadata.h.

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◆ MarkEvacuationCandidate()

void v8::internal::PageMetadata::MarkEvacuationCandidate ( )

inline

Definition at line 42 of file page-metadata-inl.h.

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◆ MarkNeverAllocateForTesting()

void v8::internal::PageMetadata::MarkNeverAllocateForTesting ( )

Definition at line 78 of file page-metadata.cc.

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◆ next_page() [1/2]

PageMetadata * v8::internal::PageMetadata::next_page ( )

inline

Definition at line 68 of file page-metadata.h.

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◆ next_page() [2/2]

const PageMetadata * v8::internal::PageMetadata::next_page ( ) const

inline

Definition at line 75 of file page-metadata.h.

◆ OnSamePage()

static bool v8::internal::PageMetadata::OnSamePage	(	Address	address1,
		Address	address2 )

inlinestatic

Definition at line 51 of file page-metadata.h.

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◆ prev_page() [1/2]

PageMetadata * v8::internal::PageMetadata::prev_page ( )

inline

Definition at line 71 of file page-metadata.h.

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◆ prev_page() [2/2]

const PageMetadata * v8::internal::PageMetadata::prev_page ( ) const

inline

Definition at line 78 of file page-metadata.h.

◆ ReleaseFreeListCategories()

void v8::internal::PageMetadata::ReleaseFreeListCategories ( )

Definition at line 40 of file page-metadata.cc.

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Friends And Related Symbol Documentation

◆ MemoryAllocator

friend class MemoryAllocator

friend

Definition at line 127 of file page-metadata.h.

The documentation for this class was generated from the following files:

Public Member Functions

Static Public Member Functions

Friends

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

◆ PageMetadata()

Member Function Documentation

◆ active_system_pages()

◆ AllocateFreeListCategories()

◆ AssertNoTypedSlotsInFreeMemory()

◆ AvailableInFreeList()

◆ AvailableInFreeListFromAllocatedBytes()

◆ cast() [1/2]

◆ cast() [2/2]

◆ ClearEvacuationCandidate()

◆ ClearTypedSlotsInFreeMemory()

◆ ConvertNewToOld()

◆ CreateBlackArea()

◆ DestroyBlackArea()

◆ ForAllFreeListCategories()

◆ free_list_category()

◆ FromAddress()

◆ FromAllocationAreaAddress()

◆ FromHeapObject()

◆ InitializeFreeListCategories()

◆ IsAlignedToPageSize()

◆ MarkEvacuationCandidate()

◆ MarkNeverAllocateForTesting()

◆ next_page() [1/2]

◆ next_page() [2/2]

◆ OnSamePage()

◆ prev_page() [1/2]

◆ prev_page() [2/2]

◆ ReleaseFreeListCategories()

Friends And Related Symbol Documentation

◆ MemoryAllocator