JSC::MarkedSpace Class Reference

#include <MarkedSpace.h>

Public Types
typedef HashSet< MarkedBlock * >::iterator	BlockIterator
typedef HashSet< MarkedBlock * >::iterator	BlockIterator

Public Member Functions
	MarkedSpace (Heap *)
	~MarkedSpace ()
Heap *	heap () const
void	lastChanceToFinalize ()
void	prepareForAllocation ()
void	visitWeakSets (SlotVisitor &)
void	reapWeakSets ()
MarkedBlockSet &	blocks ()
void	willStartIterating ()
bool	isIterating () const
void	didFinishIterating ()
void	stopAllocating ()
void	resumeAllocating ()
void	prepareForMarking ()
void	prepareForConservativeScan ()
template<typename Functor >
void	forEachLiveCell (HeapIterationScope &, const Functor &)
template<typename Functor >
void	forEachDeadCell (HeapIterationScope &, const Functor &)
template<typename Functor >
void	forEachBlock (const Functor &)
void	shrink ()
void	freeBlock (MarkedBlock::Handle *)
void	freeOrShrinkBlock (MarkedBlock::Handle *)
void	didAddBlock (MarkedBlock::Handle *)
void	didConsumeFreeList (MarkedBlock::Handle *)
void	didAllocateInBlock (MarkedBlock::Handle *)
void	beginMarking ()
void	endMarking ()
void	snapshotUnswept ()
void	clearNewlyAllocated ()
void	sweep ()
void	sweepLargeAllocations ()
void	assertNoUnswept ()
size_t	objectCount ()
size_t	size ()
size_t	capacity ()
bool	isPagedOut (double deadline)
HeapVersion	markingVersion () const
HeapVersion	newlyAllocatedVersion () const
const Vector< LargeAllocation * > &	largeAllocations () const
unsigned	largeAllocationsNurseryOffset () const
unsigned	largeAllocationsOffsetForThisCollection () const
LargeAllocation **	largeAllocationsForThisCollectionBegin () const
LargeAllocation **	largeAllocationsForThisCollectionEnd () const
unsigned	largeAllocationsForThisCollectionSize () const
MarkedAllocator *	firstAllocator () const
MarkedAllocator *	allocatorForEmptyAllocation () const
MarkedBlock::Handle *	findEmptyBlockToSteal ()
Lock &	allocatorLock ()
MarkedAllocator *	addMarkedAllocator (const AbstractLocker &, Subspace *, size_t cellSize)
bool	isMarking () const
void	dumpBits (PrintStream &=WTF::dataFile())
	MarkedSpace (Heap *)
	~MarkedSpace ()
Heap *	heap () const
void	lastChanceToFinalize ()
void	prepareForAllocation ()
void	visitWeakSets (SlotVisitor &)
void	reapWeakSets ()
MarkedBlockSet &	blocks ()
void	willStartIterating ()
bool	isIterating () const
void	didFinishIterating ()
void	stopAllocating ()
void	resumeAllocating ()
void	prepareForMarking ()
void	prepareForConservativeScan ()
template<typename Functor >
void	forEachLiveCell (HeapIterationScope &, const Functor &)
template<typename Functor >
void	forEachDeadCell (HeapIterationScope &, const Functor &)
template<typename Functor >
void	forEachBlock (const Functor &)
void	shrink ()
void	freeBlock (MarkedBlock::Handle *)
void	freeOrShrinkBlock (MarkedBlock::Handle *)
void	didAddBlock (MarkedBlock::Handle *)
void	didConsumeFreeList (MarkedBlock::Handle *)
void	didAllocateInBlock (MarkedBlock::Handle *)
void	beginMarking ()
void	endMarking ()
void	snapshotUnswept ()
void	clearNewlyAllocated ()
void	sweep ()
void	sweepLargeAllocations ()
void	assertNoUnswept ()
size_t	objectCount ()
size_t	size ()
size_t	capacity ()
bool	isPagedOut (double deadline)
HeapVersion	markingVersion () const
HeapVersion	newlyAllocatedVersion () const
const Vector< LargeAllocation * > &	largeAllocations () const
unsigned	largeAllocationsNurseryOffset () const
unsigned	largeAllocationsOffsetForThisCollection () const
LargeAllocation **	largeAllocationsForThisCollectionBegin () const
LargeAllocation **	largeAllocationsForThisCollectionEnd () const
unsigned	largeAllocationsForThisCollectionSize () const
MarkedAllocator *	firstAllocator () const
MarkedAllocator *	allocatorForEmptyAllocation () const
MarkedBlock::Handle *	findEmptyBlockToSteal ()
Lock &	allocatorLock ()
MarkedAllocator *	addMarkedAllocator (const AbstractLocker &, Subspace *, size_t cellSize)
bool	isMarking () const
void	dumpBits (PrintStream &=WTF::dataFile())

Static Public Member Functions
static HeapVersion	nextVersion (HeapVersion version)
static size_t	sizeClassToIndex (size_t size)
static size_t	indexToSizeClass (size_t index)
static size_t	optimalSizeFor (size_t)
static HeapVersion	nextVersion (HeapVersion version)
static size_t	sizeClassToIndex (size_t size)
static size_t	indexToSizeClass (size_t index)
static size_t	optimalSizeFor (size_t)

Static Public Attributes
static const size_t	sizeStep = MarkedBlock::atomSize
static const size_t	preciseCutoff = 80
static const size_t	blockPayload = (MarkedBlock::blockSize - sizeof(MarkedBlock)) & ~(MarkedBlock::atomSize - 1)
static const size_t	largeCutoff = (blockPayload / 2) & ~(sizeStep - 1)
static const size_t	numSizeClasses = largeCutoff / sizeStep
static const HeapVersion	nullVersion = 0
static const HeapVersion	initialVersion = 2
static JS_EXPORT_PRIVATE std::array< size_t, numSizeClasses >	s_sizeClassForSizeStep

Friends
class	LLIntOffsetsExtractor
class	JIT
class	WeakSet
class	Subspace

Member Typedef Documentation

BlockIterator [1/2]

typedef HashSet<MarkedBlock*>::iterator JSC::MarkedSpace::BlockIterator

BlockIterator [2/2]

typedef HashSet<MarkedBlock*>::iterator JSC::MarkedSpace::BlockIterator

Constructor & Destructor Documentation

MarkedSpace() [1/2]

JSC::MarkedSpace::MarkedSpace

(

Heap *

heap

)

~MarkedSpace() [1/2]

JSC::MarkedSpace::~MarkedSpace

(

)

MarkedSpace() [2/2]

JSC::MarkedSpace::MarkedSpace

(

Heap *

)

~MarkedSpace() [2/2]

JSC::MarkedSpace::~MarkedSpace

(

)

Member Function Documentation

addMarkedAllocator() [1/2]

MarkedAllocator * JSC::MarkedSpace::addMarkedAllocator	(	const AbstractLocker &	,
		Subspace *	subspace,
		size_t	cellSize
	)

addMarkedAllocator() [2/2]

MarkedAllocator* JSC::MarkedSpace::addMarkedAllocator	(	const AbstractLocker &	,
		Subspace *	,
		size_t	cellSize
	)

allocatorForEmptyAllocation() [1/2]

MarkedAllocator* JSC::MarkedSpace::allocatorForEmptyAllocation ( ) const

inline

allocatorForEmptyAllocation() [2/2]

MarkedAllocator* JSC::MarkedSpace::allocatorForEmptyAllocation ( ) const

inline

allocatorLock() [1/2]

Lock& JSC::MarkedSpace::allocatorLock ( )

inline

allocatorLock() [2/2]

Lock& JSC::MarkedSpace::allocatorLock ( )

inline

assertNoUnswept() [1/2]

void JSC::MarkedSpace::assertNoUnswept

(

)

assertNoUnswept() [2/2]

void JSC::MarkedSpace::assertNoUnswept

(

)

beginMarking() [1/2]

void JSC::MarkedSpace::beginMarking

(

)

beginMarking() [2/2]

void JSC::MarkedSpace::beginMarking

(

)

blocks() [1/2]

MarkedBlockSet& JSC::MarkedSpace::blocks ( )

inline

blocks() [2/2]

MarkedBlockSet& JSC::MarkedSpace::blocks ( )

inline

capacity() [1/2]

size_t JSC::MarkedSpace::capacity

(

)

capacity() [2/2]

size_t JSC::MarkedSpace::capacity

(

)

clearNewlyAllocated() [1/2]

void JSC::MarkedSpace::clearNewlyAllocated

(

)

clearNewlyAllocated() [2/2]

void JSC::MarkedSpace::clearNewlyAllocated

(

)

didAddBlock() [1/2]

void JSC::MarkedSpace::didAddBlock

(

MarkedBlock::Handle *

)

didAddBlock() [2/2]

void JSC::MarkedSpace::didAddBlock

(

MarkedBlock::Handle *

block

)

didAllocateInBlock() [1/2]

void JSC::MarkedSpace::didAllocateInBlock

(

MarkedBlock::Handle *

)

didAllocateInBlock() [2/2]

void JSC::MarkedSpace::didAllocateInBlock

(

MarkedBlock::Handle *

block

)

didConsumeFreeList() [1/2]

void JSC::MarkedSpace::didConsumeFreeList

(

MarkedBlock::Handle *

)

didConsumeFreeList() [2/2]

void JSC::MarkedSpace::didConsumeFreeList

(

MarkedBlock::Handle *

)

didFinishIterating() [1/2]

void JSC::MarkedSpace::didFinishIterating

(

)

didFinishIterating() [2/2]

void JSC::MarkedSpace::didFinishIterating

(

)

dumpBits() [1/2]

void JSC::MarkedSpace::dumpBits

(

PrintStream &

out = WTF::dataFile()

)

dumpBits() [2/2]

void JSC::MarkedSpace::dumpBits

(

PrintStream &

= WTF::dataFile()

)

endMarking() [1/2]

void JSC::MarkedSpace::endMarking

(

)

endMarking() [2/2]

void JSC::MarkedSpace::endMarking

(

)

findEmptyBlockToSteal() [1/2]

MarkedBlock::Handle * JSC::MarkedSpace::findEmptyBlockToSteal

(

)

findEmptyBlockToSteal() [2/2]

MarkedBlock::Handle* JSC::MarkedSpace::findEmptyBlockToSteal

(

)

firstAllocator() [1/2]

MarkedAllocator* JSC::MarkedSpace::firstAllocator ( ) const

inline

firstAllocator() [2/2]

MarkedAllocator* JSC::MarkedSpace::firstAllocator ( ) const

inline

forEachBlock() [1/2]

template<typename Functor >

void JSC::MarkedSpace::forEachBlock

(

const Functor &

)

forEachBlock() [2/2]

template<typename Functor >

void JSC::MarkedSpace::forEachBlock ( const Functor &  functor )

inline

forEachDeadCell() [1/2]

template<typename Functor >

void JSC::MarkedSpace::forEachDeadCell	(	HeapIterationScope &	,
		const Functor &
	)

forEachDeadCell() [2/2]

template<typename Functor >

void JSC::MarkedSpace::forEachDeadCell ( HeapIterationScope &  , const Functor &  functor  )

inline

forEachLiveCell() [1/2]

template<typename Functor >

void JSC::MarkedSpace::forEachLiveCell ( HeapIterationScope &  , const Functor &  functor  )

inline

forEachLiveCell() [2/2]

template<typename Functor >

void JSC::MarkedSpace::forEachLiveCell	(	HeapIterationScope &	,
		const Functor &
	)

freeBlock() [1/2]

void JSC::MarkedSpace::freeBlock

(

MarkedBlock::Handle *

)

freeBlock() [2/2]

void JSC::MarkedSpace::freeBlock

(

MarkedBlock::Handle *

block

)

freeOrShrinkBlock() [1/2]

void JSC::MarkedSpace::freeOrShrinkBlock

(

MarkedBlock::Handle *

)

freeOrShrinkBlock() [2/2]

void JSC::MarkedSpace::freeOrShrinkBlock

(

MarkedBlock::Handle *

block

)

heap() [1/2]

Heap* JSC::MarkedSpace::heap ( ) const

inline

heap() [2/2]

Heap* JSC::MarkedSpace::heap ( ) const

inline

indexToSizeClass() [1/2]

static size_t JSC::MarkedSpace::indexToSizeClass ( size_t  index )

inlinestatic

indexToSizeClass() [2/2]

static size_t JSC::MarkedSpace::indexToSizeClass ( size_t  index )

inlinestatic

isIterating() [1/2]

bool JSC::MarkedSpace::isIterating ( ) const

inline

isIterating() [2/2]

bool JSC::MarkedSpace::isIterating ( ) const

inline

isMarking() [1/2]

bool JSC::MarkedSpace::isMarking ( ) const

inline

isMarking() [2/2]

bool JSC::MarkedSpace::isMarking ( ) const

inline

isPagedOut() [1/2]

bool JSC::MarkedSpace::isPagedOut

(

double

deadline

)

isPagedOut() [2/2]

bool JSC::MarkedSpace::isPagedOut

(

double

deadline

)

largeAllocations() [1/2]

const Vector<LargeAllocation*>& JSC::MarkedSpace::largeAllocations ( ) const

inline

largeAllocations() [2/2]

const Vector<LargeAllocation*>& JSC::MarkedSpace::largeAllocations ( ) const

inline

largeAllocationsForThisCollectionBegin() [1/2]

LargeAllocation** JSC::MarkedSpace::largeAllocationsForThisCollectionBegin ( ) const

inline

largeAllocationsForThisCollectionBegin() [2/2]

LargeAllocation** JSC::MarkedSpace::largeAllocationsForThisCollectionBegin ( ) const

inline

largeAllocationsForThisCollectionEnd() [1/2]

LargeAllocation** JSC::MarkedSpace::largeAllocationsForThisCollectionEnd ( ) const

inline

largeAllocationsForThisCollectionEnd() [2/2]

LargeAllocation** JSC::MarkedSpace::largeAllocationsForThisCollectionEnd ( ) const

inline

largeAllocationsForThisCollectionSize() [1/2]

unsigned JSC::MarkedSpace::largeAllocationsForThisCollectionSize ( ) const

inline

largeAllocationsForThisCollectionSize() [2/2]

unsigned JSC::MarkedSpace::largeAllocationsForThisCollectionSize ( ) const

inline

largeAllocationsNurseryOffset() [1/2]

unsigned JSC::MarkedSpace::largeAllocationsNurseryOffset ( ) const

inline

largeAllocationsNurseryOffset() [2/2]

unsigned JSC::MarkedSpace::largeAllocationsNurseryOffset ( ) const

inline

largeAllocationsOffsetForThisCollection() [1/2]

unsigned JSC::MarkedSpace::largeAllocationsOffsetForThisCollection ( ) const

inline

largeAllocationsOffsetForThisCollection() [2/2]

unsigned JSC::MarkedSpace::largeAllocationsOffsetForThisCollection ( ) const

inline

lastChanceToFinalize() [1/2]

void JSC::MarkedSpace::lastChanceToFinalize

(

)

lastChanceToFinalize() [2/2]

void JSC::MarkedSpace::lastChanceToFinalize

(

)

markingVersion() [1/2]

HeapVersion JSC::MarkedSpace::markingVersion ( ) const

inline

markingVersion() [2/2]

HeapVersion JSC::MarkedSpace::markingVersion ( ) const

inline

newlyAllocatedVersion() [1/2]

HeapVersion JSC::MarkedSpace::newlyAllocatedVersion ( ) const

inline

newlyAllocatedVersion() [2/2]

HeapVersion JSC::MarkedSpace::newlyAllocatedVersion ( ) const

inline

nextVersion() [1/2]

static HeapVersion JSC::MarkedSpace::nextVersion ( HeapVersion  version )

inlinestatic

nextVersion() [2/2]

static HeapVersion JSC::MarkedSpace::nextVersion ( HeapVersion  version )

inlinestatic

objectCount() [1/2]

size_t JSC::MarkedSpace::objectCount

(

)

objectCount() [2/2]

size_t JSC::MarkedSpace::objectCount

(

)

optimalSizeFor() [1/2]

ALWAYS_INLINE size_t JSC::MarkedSpace::optimalSizeFor ( size_t  bytes )

static

optimalSizeFor() [2/2]

static size_t JSC::MarkedSpace::optimalSizeFor ( size_t  )

static

prepareForAllocation() [1/2]

void JSC::MarkedSpace::prepareForAllocation

(

)

prepareForAllocation() [2/2]

void JSC::MarkedSpace::prepareForAllocation

(

)

prepareForConservativeScan() [1/2]

void JSC::MarkedSpace::prepareForConservativeScan

(

)

prepareForConservativeScan() [2/2]

void JSC::MarkedSpace::prepareForConservativeScan

(

)

prepareForMarking() [1/2]

void JSC::MarkedSpace::prepareForMarking

(

)

prepareForMarking() [2/2]

void JSC::MarkedSpace::prepareForMarking

(

)

reapWeakSets() [1/2]

void JSC::MarkedSpace::reapWeakSets

(

)

reapWeakSets() [2/2]

void JSC::MarkedSpace::reapWeakSets

(

)

resumeAllocating() [1/2]

void JSC::MarkedSpace::resumeAllocating

(

)

resumeAllocating() [2/2]

void JSC::MarkedSpace::resumeAllocating

(

)

shrink() [1/2]

void JSC::MarkedSpace::shrink

(

)

shrink() [2/2]

void JSC::MarkedSpace::shrink

(

)

size() [1/2]

size_t JSC::MarkedSpace::size

(

)

size() [2/2]

size_t JSC::MarkedSpace::size

(

)

sizeClassToIndex() [1/2]

static size_t JSC::MarkedSpace::sizeClassToIndex ( size_t  size )

inlinestatic

sizeClassToIndex() [2/2]

static size_t JSC::MarkedSpace::sizeClassToIndex ( size_t  size )

inlinestatic

snapshotUnswept() [1/2]

void JSC::MarkedSpace::snapshotUnswept

(

)

snapshotUnswept() [2/2]

void JSC::MarkedSpace::snapshotUnswept

(

)

stopAllocating() [1/2]

void JSC::MarkedSpace::stopAllocating

(

)

stopAllocating() [2/2]

void JSC::MarkedSpace::stopAllocating

(

)

sweep() [1/2]

void JSC::MarkedSpace::sweep

(

)

sweep() [2/2]

void JSC::MarkedSpace::sweep

(

)

sweepLargeAllocations() [1/2]

void JSC::MarkedSpace::sweepLargeAllocations

(

)

sweepLargeAllocations() [2/2]

void JSC::MarkedSpace::sweepLargeAllocations

(

)

visitWeakSets() [1/2]

void JSC::MarkedSpace::visitWeakSets

(

SlotVisitor &

)

visitWeakSets() [2/2]

void JSC::MarkedSpace::visitWeakSets

(

SlotVisitor &

visitor

)

willStartIterating() [1/2]

void JSC::MarkedSpace::willStartIterating

(

)

willStartIterating() [2/2]

void JSC::MarkedSpace::willStartIterating

(

)

Friends And Related Function Documentation

JIT

JIT

friend

LLIntOffsetsExtractor

LLIntOffsetsExtractor

friend

Subspace

Subspace

friend

WeakSet

WeakSet

friend

Member Data Documentation

blockPayload

static const size_t JSC::MarkedSpace::blockPayload = (MarkedBlock::blockSize - sizeof(MarkedBlock)) & ~(MarkedBlock::atomSize - 1)

static

initialVersion

static const HeapVersion JSC::MarkedSpace::initialVersion = 2

static

largeCutoff

static const size_t JSC::MarkedSpace::largeCutoff = (blockPayload / 2) & ~(sizeStep - 1)

static

nullVersion

static const HeapVersion JSC::MarkedSpace::nullVersion = 0

static

numSizeClasses

static const size_t JSC::MarkedSpace::numSizeClasses = largeCutoff / sizeStep

static

preciseCutoff

static const size_t JSC::MarkedSpace::preciseCutoff = 80

static

s_sizeClassForSizeStep

static JS_EXPORT_PRIVATE std::array< size_t, numSizeClasses > JSC::MarkedSpace::s_sizeClassForSizeStep

static

sizeStep

static const size_t JSC::MarkedSpace::sizeStep = MarkedBlock::atomSize

static

---

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

• DerivedData/WebKit/Build/Products/Debug/JavaScriptCore.framework/Versions/A/PrivateHeaders/MarkedSpace.h
• DerivedData/WebKit/Build/Products/Debug/JavaScriptCore.framework/Versions/A/PrivateHeaders/MarkedSpaceInlines.h
• Source/JavaScriptCore/heap/MarkedSpace.cpp