#include <new-spaces.h>

Inheritance diagram for v8::internal::SemiSpace:

Collaboration diagram for v8::internal::SemiSpace:

Public Types
using	iterator = PageIterator

using	const_iterator = ConstPageIterator

Public Member Functions
	SemiSpace (Heap *heap, SemiSpaceId semispace)

V8_EXPORT_PRIVATE	~SemiSpace ()

bool	Contains (Tagged< HeapObject > o) const

bool	Contains (Tagged< Object > o) const

template<typename T >
bool	Contains (Tagged< T > o) const

bool	ContainsSlow (Address a) const

void	Uncommit ()

bool	IsCommitted () const

Address	space_start () const

PageMetadata *	current_page () const

Address	page_low () const

Address	page_high () const

bool	AdvancePage (size_t target_capacity)

void	RemovePage (PageMetadata *page)

void	MovePageToTheEnd (PageMetadata *page)

PageMetadata *	InitializePage (MutablePageMetadata *chunk) final

size_t	current_capacity () const

size_t	current_capacity_safe () const

SemiSpaceId	id () const

size_t	CommittedPhysicalMemory () const final

size_t	Size () const final

size_t	SizeOfObjects () const final

size_t	Available () const final

PageMetadata *	first_page () final

PageMetadata *	last_page () final

const PageMetadata *	first_page () const final

const PageMetadata *	last_page () const final

iterator	begin ()

iterator	end ()

const_iterator	begin () const

const_iterator	end () const

std::unique_ptr< ObjectIterator >	GetObjectIterator (Heap *heap) final

void	AddRangeToActiveSystemPages (Address start, Address end)

void	MoveQuarantinedPage (MemoryChunk *chunk)

Public Member Functions inherited from v8::internal::Space
	Space (Heap *heap, AllocationSpace id, std::unique_ptr< FreeList > free_list)

	~Space () override=default

	Space (const Space &)=delete

Space &	operator= (const Space &)=delete

void	IncrementExternalBackingStoreBytes (ExternalBackingStoreType type, size_t amount)

void	DecrementExternalBackingStoreBytes (ExternalBackingStoreType type, size_t amount)

virtual size_t	ExternalBackingStoreBytes (ExternalBackingStoreType type) const

virtual heap::List< MutablePageMetadata > &	memory_chunk_list ()

virtual void	NotifyBlackAreaCreated (size_t size)

virtual void	NotifyBlackAreaDestroyed (size_t size)

FreeList *	free_list ()

Address	FirstPageAddress () const

Public Member Functions inherited from v8::internal::BaseSpace
	BaseSpace (const BaseSpace &)=delete

BaseSpace &	operator= (const BaseSpace &)=delete

Heap *	heap () const

AllocationSpace	identity () const

virtual size_t	CommittedMemory () const

virtual size_t	MaximumCommittedMemory () const

Static Public Member Functions
static void	Swap (SemiSpace from, SemiSpace to)

static void	AssertValidRange (Address from, Address to)

Static Public Member Functions inherited from v8::internal::Space
static void	MoveExternalBackingStoreBytes (ExternalBackingStoreType type, Space from, Space to, size_t amount)

Static Public Member Functions inherited from v8::internal::Malloced
static void *	operator new (size_t size)

static void	operator delete (void *p)

Private Member Functions
bool	AllocateFreshPage ()

void	RewindPages (int num_pages)

void	FixPagesFlags ()

void	IncrementCommittedPhysicalMemory (size_t increment_value)

void	DecrementCommittedPhysicalMemory (size_t decrement_value)

void	ShrinkCapacityTo (size_t capacity)

void	Reset ()

Private Attributes
size_t	current_capacity_ = 0

size_t	committed_physical_memory_ = 0

SemiSpaceId	id_

PageMetadata *	current_page_ = nullptr

size_t	quarantined_pages_count_ = 0

Friends
class	SemiSpaceNewSpace

class	SemiSpaceObjectIterator

Additional Inherited Members
Protected Member Functions inherited from v8::internal::BaseSpace
	BaseSpace (Heap *heap, AllocationSpace id)

virtual	~BaseSpace ()=default

void	AccountCommitted (size_t bytes)

void	AccountUncommitted (size_t bytes)

Protected Attributes inherited from v8::internal::Space
heap::List< MutablePageMetadata >	memory_chunk_list_

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

std::unique_ptr< FreeList >	free_list_

Protected Attributes inherited from v8::internal::BaseSpace
Heap *	heap_

AllocationSpace	id_

std::atomic< size_t >	committed_ {0}

size_t	max_committed_ = 0

Detailed Description

Definition at line 43 of file new-spaces.h.

Member Typedef Documentation

◆ const_iterator

using v8::internal::SemiSpace::const_iterator = ConstPageIterator

Definition at line 46 of file new-spaces.h.

◆ iterator

using v8::internal::SemiSpace::iterator = PageIterator

Definition at line 45 of file new-spaces.h.

Constructor & Destructor Documentation

◆ SemiSpace()

v8::internal::SemiSpace::SemiSpace	(	Heap *	heap,
		SemiSpaceId	semispace )

Definition at line 54 of file new-spaces.cc.

◆ ~SemiSpace()

v8::internal::SemiSpace::~SemiSpace ( )

Definition at line 57 of file new-spaces.cc.

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Member Function Documentation

◆ AddRangeToActiveSystemPages()

void v8::internal::SemiSpace::AddRangeToActiveSystemPages	(	Address	start,
		Address	end )

Definition at line 267 of file new-spaces.cc.

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◆ AdvancePage()

bool v8::internal::SemiSpace::AdvancePage ( size_t target_capacity )

Definition at line 220 of file new-spaces.cc.

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◆ AllocateFreshPage()

bool v8::internal::SemiSpace::AllocateFreshPage ( )

private

Definition at line 116 of file new-spaces.cc.

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◆ AssertValidRange()

static void v8::internal::SemiSpace::AssertValidRange	(	Address	from,
		Address	to )

inlinestatic

Definition at line 134 of file new-spaces.h.

◆ Available()

size_t v8::internal::SemiSpace::Available ( ) const

inlinefinalvirtual

Implements v8::internal::Space.

Definition at line 102 of file new-spaces.h.

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◆ begin() [1/2]

iterator v8::internal::SemiSpace::begin ( )

inline

Definition at line 118 of file new-spaces.h.

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◆ begin() [2/2]

const_iterator v8::internal::SemiSpace::begin ( ) const

inline

Definition at line 121 of file new-spaces.h.

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◆ CommittedPhysicalMemory()

size_t v8::internal::SemiSpace::CommittedPhysicalMemory ( ) const

finalvirtual

Implements v8::internal::BaseSpace.

Definition at line 110 of file new-spaces.cc.

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◆ Contains() [1/3]

bool v8::internal::SemiSpace::Contains ( Tagged< HeapObject > o ) const

inline

Definition at line 26 of file new-spaces-inl.h.

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◆ Contains() [2/3]

bool v8::internal::SemiSpace::Contains ( Tagged< Object > o ) const

inline

Definition at line 33 of file new-spaces-inl.h.

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◆ Contains() [3/3]

template<typename T >

bool v8::internal::SemiSpace::Contains ( Tagged< T > o ) const

inline

Definition at line 38 of file new-spaces-inl.h.

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◆ ContainsSlow()

bool v8::internal::SemiSpace::ContainsSlow ( Address a ) const

inline

Definition at line 43 of file new-spaces-inl.h.

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◆ current_capacity()

size_t v8::internal::SemiSpace::current_capacity ( ) const

inline

Definition at line 84 of file new-spaces.h.

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◆ current_capacity_safe()

size_t v8::internal::SemiSpace::current_capacity_safe ( ) const

inline

Definition at line 86 of file new-spaces.h.

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◆ current_page()

PageMetadata * v8::internal::SemiSpace::current_page ( ) const

inline

Definition at line 68 of file new-spaces.h.

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◆ DecrementCommittedPhysicalMemory()

void v8::internal::SemiSpace::DecrementCommittedPhysicalMemory ( size_t decrement_value )

private

Definition at line 261 of file new-spaces.cc.

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◆ end() [1/2]

iterator v8::internal::SemiSpace::end ( )

inline

Definition at line 119 of file new-spaces.h.

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◆ end() [2/2]

const_iterator v8::internal::SemiSpace::end ( ) const

inline

Definition at line 122 of file new-spaces.h.

◆ first_page() [1/2]

const PageMetadata * v8::internal::SemiSpace::first_page ( ) const

inlinefinalvirtual

Reimplemented from v8::internal::Space.

Definition at line 111 of file new-spaces.h.

◆ first_page() [2/2]

PageMetadata * v8::internal::SemiSpace::first_page ( )

inlinefinalvirtual

Reimplemented from v8::internal::Space.

Definition at line 104 of file new-spaces.h.

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◆ FixPagesFlags()

void v8::internal::SemiSpace::FixPagesFlags ( )

private

Definition at line 146 of file new-spaces.cc.

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◆ GetObjectIterator()

std::unique_ptr< ObjectIterator > v8::internal::SemiSpace::GetObjectIterator ( Heap * heap )

finalvirtual

Implements v8::internal::Space.

Definition at line 282 of file new-spaces.cc.

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◆ id()

SemiSpaceId v8::internal::SemiSpace::id ( ) const

inline

Definition at line 90 of file new-spaces.h.

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◆ IncrementCommittedPhysicalMemory()

void v8::internal::SemiSpace::IncrementCommittedPhysicalMemory ( size_t increment_value )

private

Definition at line 254 of file new-spaces.cc.

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◆ InitializePage()

PageMetadata * v8::internal::SemiSpace::InitializePage ( MutablePageMetadata * chunk )

finalvirtual

Reimplemented from v8::internal::Space.

Definition at line 42 of file new-spaces.cc.

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◆ IsCommitted()

bool v8::internal::SemiSpace::IsCommitted ( ) const

inline

Definition at line 60 of file new-spaces.h.

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◆ last_page() [1/2]

const PageMetadata * v8::internal::SemiSpace::last_page ( ) const

inlinefinalvirtual

Reimplemented from v8::internal::Space.

Definition at line 114 of file new-spaces.h.

◆ last_page() [2/2]

PageMetadata * v8::internal::SemiSpace::last_page ( )

inlinefinalvirtual

Reimplemented from v8::internal::Space.

Definition at line 107 of file new-spaces.h.

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◆ MovePageToTheEnd()

void v8::internal::SemiSpace::MovePageToTheEnd ( PageMetadata * page )

Definition at line 183 of file new-spaces.cc.

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◆ MoveQuarantinedPage()

void v8::internal::SemiSpace::MoveQuarantinedPage ( MemoryChunk * chunk )

Definition at line 375 of file new-spaces.cc.

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◆ page_high()

Address v8::internal::SemiSpace::page_high ( ) const

inline

Definition at line 74 of file new-spaces.h.

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◆ page_low()

Address v8::internal::SemiSpace::page_low ( ) const

inline

Definition at line 71 of file new-spaces.h.

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◆ RemovePage()

void v8::internal::SemiSpace::RemovePage ( PageMetadata * page )

Definition at line 167 of file new-spaces.cc.

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◆ Reset()

void v8::internal::SemiSpace::Reset ( )

private

Definition at line 287 of file new-spaces.cc.

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◆ RewindPages()

void v8::internal::SemiSpace::RewindPages ( int num_pages )

private

Definition at line 130 of file new-spaces.cc.

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◆ ShrinkCapacityTo()

void v8::internal::SemiSpace::ShrinkCapacityTo ( size_t capacity )

private

Definition at line 69 of file new-spaces.cc.

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◆ Size()

size_t v8::internal::SemiSpace::Size ( ) const

inlinefinalvirtual

Implements v8::internal::BaseSpace.

Definition at line 98 of file new-spaces.h.

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◆ SizeOfObjects()

size_t v8::internal::SemiSpace::SizeOfObjects ( ) const

inlinefinalvirtual

Reimplemented from v8::internal::Space.

Definition at line 100 of file new-spaces.h.

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◆ space_start()

Address v8::internal::SemiSpace::space_start ( ) const

inline

Definition at line 63 of file new-spaces.h.

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◆ Swap()

void v8::internal::SemiSpace::Swap	(	SemiSpace *	from,
		SemiSpace *	to )

static

Definition at line 190 of file new-spaces.cc.

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◆ Uncommit()

void v8::internal::SemiSpace::Uncommit ( )

Definition at line 96 of file new-spaces.cc.

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Friends And Related Symbol Documentation

◆ SemiSpaceNewSpace

friend class SemiSpaceNewSpace

friend

Definition at line 172 of file new-spaces.h.

◆ SemiSpaceObjectIterator

friend class SemiSpaceObjectIterator

friend

Definition at line 173 of file new-spaces.h.

Member Data Documentation

◆ committed_physical_memory_

size_t v8::internal::SemiSpace::committed_physical_memory_ = 0

private

Definition at line 164 of file new-spaces.h.

◆ current_capacity_

size_t v8::internal::SemiSpace::current_capacity_ = 0

private

Definition at line 163 of file new-spaces.h.

◆ current_page_

PageMetadata* v8::internal::SemiSpace::current_page_ = nullptr

private

Definition at line 166 of file new-spaces.h.

◆ id_

SemiSpaceId v8::internal::SemiSpace::id_

private

Definition at line 165 of file new-spaces.h.

◆ quarantined_pages_count_

size_t v8::internal::SemiSpace::quarantined_pages_count_ = 0

private

Definition at line 170 of file new-spaces.h.

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

src/heap/new-spaces.h
src/heap/new-spaces-inl.h
src/heap/new-spaces.cc

Public Types

Public Member Functions

Static Public Member Functions

Private Member Functions

Private Attributes

Friends

Additional Inherited Members

Detailed Description

Member Typedef Documentation

◆ const_iterator

◆ iterator

Constructor & Destructor Documentation

◆ SemiSpace()

◆ ~SemiSpace()

Member Function Documentation

◆ AddRangeToActiveSystemPages()

◆ AdvancePage()

◆ AllocateFreshPage()

◆ AssertValidRange()

◆ Available()

◆ begin() [1/2]

◆ begin() [2/2]

◆ CommittedPhysicalMemory()

◆ Contains() [1/3]

◆ Contains() [2/3]

◆ Contains() [3/3]

◆ ContainsSlow()

◆ current_capacity()

◆ current_capacity_safe()

◆ current_page()

◆ DecrementCommittedPhysicalMemory()

◆ end() [1/2]

◆ end() [2/2]

◆ first_page() [1/2]

◆ first_page() [2/2]

◆ FixPagesFlags()

◆ GetObjectIterator()

◆ id()

◆ IncrementCommittedPhysicalMemory()

◆ InitializePage()

◆ IsCommitted()

◆ last_page() [1/2]

◆ last_page() [2/2]

◆ MovePageToTheEnd()

◆ MoveQuarantinedPage()

◆ page_high()

◆ page_low()

◆ RemovePage()

◆ Reset()

◆ RewindPages()

◆ ShrinkCapacityTo()

◆ Size()

◆ SizeOfObjects()

◆ space_start()

◆ Swap()

◆ Uncommit()

Friends And Related Symbol Documentation

◆ SemiSpaceNewSpace

◆ SemiSpaceObjectIterator

Member Data Documentation

◆ committed_physical_memory_

◆ current_capacity_

◆ current_page_

◆ id_

◆ quarantined_pages_count_