NewSpace Class Reference

#include <spaces.h>

Inheritance diagram for NewSpace:

Collaboration diagram for NewSpace:

Public Member Functions
	NewSpace (Heap *heap)
bool	SetUp (int reserved_semispace_size_, int max_semispace_size)
void	TearDown ()
bool	HasBeenSetUp ()
void	Flip ()
void	Grow ()
void	Shrink ()
bool	Contains (Address a)
bool	Contains (Object *o)
virtual intptr_t	Size ()
int	SizeAsInt ()
intptr_t	EffectiveCapacity ()
intptr_t	Capacity ()
intptr_t	CommittedMemory ()
intptr_t	MaximumCommittedMemory ()
size_t	CommittedPhysicalMemory ()
intptr_t	Available ()
int	MaximumCapacity ()
int	InitialCapacity ()
Address	top ()
void	set_top (Address top)
Address	limit ()
Address	bottom ()
Address	age_mark ()
void	set_age_mark (Address mark)
Address	start ()
uintptr_t	mask ()
	INLINE (uint32_t AddressToMarkbitIndex(Address addr))
	INLINE (Address MarkbitIndexToAddress(uint32_t index))
Address *	allocation_top_address ()
Address *	allocation_limit_address ()
MUST_USE_RESULT	INLINE (MaybeObject *AllocateRaw(int size_in_bytes))
void	ResetAllocationInfo ()
void	UpdateInlineAllocationLimit (int size_in_bytes)
void	LowerInlineAllocationLimit (intptr_t step)
Address	FromSpacePageLow ()
Address	FromSpacePageHigh ()
Address	FromSpaceStart ()
Address	FromSpaceEnd ()
Address	ToSpaceStart ()
Address	ToSpaceEnd ()
bool	ToSpaceContains (Address address)
bool	FromSpaceContains (Address address)
bool	ToSpaceContains (Object *o)
bool	FromSpaceContains (Object *o)
bool	AddFreshPage ()
void	CollectStatistics ()
void	ReportStatistics ()
void	ClearHistograms ()
void	RecordAllocation (HeapObject *obj)
void	RecordPromotion (HeapObject *obj)
bool	CommitFromSpaceIfNeeded ()
bool	UncommitFromSpace ()
intptr_t	inline_allocation_limit_step ()
SemiSpace *	active_space ()
Public Member Functions inherited from Space
	Space (Heap *heap, AllocationSpace id, Executability executable)
virtual	~Space ()
Heap *	heap () const
Executability	executable ()
AllocationSpace	identity ()
virtual intptr_t	SizeOfObjects ()
virtual int	RoundSizeDownToObjectAlignment (int size)
Public Member Functions inherited from Malloced
void *	operator new (size_t size)
void	operator delete (void *p)

Friends
class	SemiSpaceIterator

Additional Inherited Members
Static Public Member Functions inherited from Malloced
static void	FatalProcessOutOfMemory ()
static void *	New (size_t size)
static void	Delete (void *p)

Detailed Description

Definition at line 2393 of file spaces.h.

Constructor & Destructor Documentation

NewSpace ( Heap *  heap )

inlineexplicit

Definition at line 2396 of file spaces.h.

Member Function Documentation

SemiSpace* active_space ( )

inline

Definition at line 2624 of file spaces.h.

Referenced by PromotionQueue::ActivateGuardIfOnTheSamePage().

bool AddFreshPage

(

)

Definition at line 1391 of file spaces.cc.

References PromotionQueue::ActivateGuardIfOnTheSamePage(), SemiSpace::AdvancePage(), MemoryChunk::area_end(), Heap::CreateFillerObjectAt(), NewSpacePage::FromLimit(), Space::heap(), NewSpacePage::IsAtStart(), NewSpace::limit(), Heap::promotion_queue(), Heap::SCAVENGE, PromotionQueue::SetNewLimit(), and NewSpace::top().

Referenced by Runtime::PerformGC().

Address age_mark ( )

inline

Definition at line 2513 of file spaces.h.

References SemiSpace::age_mark().

Referenced by Heap::ShouldBePromoted().

Address* allocation_limit_address ( )

inline

Definition at line 2539 of file spaces.h.

References AllocationInfo::limit_address().

Referenced by Heap::NewSpaceAllocationLimitAddress(), and TEST().

Address* allocation_top_address ( )

inline

Definition at line 2534 of file spaces.h.

References AllocationInfo::top_address().

Referenced by Heap::NewSpaceAllocationTopAddress(), and TEST().

intptr_t Available ( )

inline

Definition at line 2476 of file spaces.h.

References NewSpace::Capacity(), and NewSpace::Size().

Referenced by Heap::Available(), StatisticsExtension::GetCounters(), Heap::PrintShortHeapStatistics(), NewSpace::ReportStatistics(), and TEST().

Address bottom ( )

inline

Definition at line 2510 of file spaces.h.

References SemiSpace::space_start().

Referenced by SemiSpaceIterator::SemiSpaceIterator().

intptr_t Capacity ( )

inline

Definition at line 2455 of file spaces.h.

References ASSERT, and SemiSpace::Capacity().

Referenced by NewSpace::Available(), Heap::Capacity(), Heap::CheckNewSpaceExpansionCriteria(), NewSpace::CommittedMemory(), NewSpace::Grow(), Heap::NextGCIsLikelyToBeFull(), Heap::OldGenerationAllocationLimit(), Heap::RecordStats(), NewSpace::ReportStatistics(), NewSpace::Shrink(), and TEST().

void ClearHistograms

(

)

Definition at line 1903 of file spaces.cc.

References v8::internal::LAST_TYPE.

Referenced by NewSpace::CollectStatistics().

void CollectStatistics

(

)

Definition at line 1914 of file spaces.cc.

References NewSpace::ClearHistograms(), SemiSpaceIterator::Next(), v8::internal::NULL, and NewSpace::RecordAllocation().

bool CommitFromSpaceIfNeeded ( )

inline

Definition at line 2610 of file spaces.h.

References SemiSpace::Commit(), and SemiSpace::is_committed().

intptr_t CommittedMemory ( )

inline

Definition at line 2461 of file spaces.h.

References NewSpace::Capacity(), and SemiSpace::is_committed().

Referenced by Heap::CommittedMemory(), NewSpace::CommittedPhysicalMemory(), StatisticsExtension::GetCounters(), and Heap::PrintShortHeapStatistics().

size_t CommittedPhysicalMemory

(

)

Definition at line 1994 of file spaces.cc.

References NewSpace::CommittedMemory(), SemiSpace::CommittedPhysicalMemory(), VirtualMemory::HasLazyCommits(), SemiSpace::is_committed(), v8::internal::size, and MemoryChunk::UpdateHighWaterMark().

Referenced by Heap::CommittedPhysicalMemory().

bool Contains ( Address  a )

inline

Definition at line 2427 of file spaces.h.

Referenced by StoreBuffer::EnterDirectlyIntoStoreBuffer(), NewSpace::INLINE(), Heap::InNewSpace(), TEST(), and SeqString::Truncate().

bool Contains ( Object *  o )

inline

Definition at line 2432 of file spaces.h.

intptr_t EffectiveCapacity ( )

inline

Definition at line 2449 of file spaces.h.

References SemiSpace::Capacity(), NewSpacePage::kAreaSize, Page::kPageSize, and SLOW_ASSERT.

Referenced by Heap::ShouldBePromoted().

void Flip

(

)

Definition at line 1304 of file spaces.cc.

References SemiSpace::Swap().

bool FromSpaceContains ( Address  address )

inline

Definition at line 2570 of file spaces.h.

References SemiSpace::Contains().

Referenced by Heap::InFromSpace().

bool FromSpaceContains ( Object *  o )

inline

Definition at line 2578 of file spaces.h.

References SemiSpace::Contains().

Address FromSpaceEnd ( )

inline

Definition at line 2561 of file spaces.h.

References SemiSpace::space_end().

Referenced by IncrementalMarking::PrepareForScavenge().

Address FromSpacePageHigh ( )

inline

Definition at line 2559 of file spaces.h.

References SemiSpace::page_high().

Address FromSpacePageLow ( )

inline

Definition at line 2558 of file spaces.h.

References SemiSpace::page_low().

Address FromSpaceStart ( )

inline

Definition at line 2560 of file spaces.h.

References SemiSpace::space_start().

Referenced by IncrementalMarking::PrepareForScavenge().

void Grow

(

)

Definition at line 1309 of file spaces.cc.

References ASSERT, ASSERT_SEMISPACE_ALLOCATION_INFO, SemiSpace::Capacity(), NewSpace::Capacity(), V8::FatalProcessOutOfMemory(), SemiSpace::GrowTo(), NewSpace::MaximumCapacity(), v8::internal::Min(), and SemiSpace::ShrinkTo().

Referenced by Heap::CheckNewSpaceExpansionCriteria(), and TEST().

bool HasBeenSetUp ( )

inline

Definition at line 2411 of file spaces.h.

References SemiSpace::HasBeenSetUp().

Referenced by TEST().

int InitialCapacity ( )

inline

Definition at line 2487 of file spaces.h.

References ASSERT, and SemiSpace::InitialCapacity().

Referenced by NewSpace::Shrink().

INLINE ( uint32_t   AddressToMarkbitIndexAddress addr )

inline

Definition at line 2522 of file spaces.h.

References ASSERT, NewSpace::Contains(), v8::internal::IsAligned(), v8::internal::kPointerSize, v8::internal::kPointerSizeLog2, and v8::internal::OffsetFrom().

INLINE ( Address   MarkbitIndexToAddressuint32_t index )

inline

Definition at line 2529 of file spaces.h.

References v8::internal::kPointerSizeLog2.

MUST_USE_RESULT INLINE

(

MaybeObject *

AllocateRawint size_in_bytes

)

intptr_t inline_allocation_limit_step ( )

inline

Definition at line 2620 of file spaces.h.

Referenced by NewSpace::UpdateInlineAllocationLimit().

Address limit ( )

inline

Definition at line 2504 of file spaces.h.

References ASSERT, MemoryChunk::ContainsLimit(), and SemiSpace::current_page().

Referenced by NewSpace::AddFreshPage().

void LowerInlineAllocationLimit ( intptr_t  step )

inline

Definition at line 2549 of file spaces.h.

References NewSpace::UpdateInlineAllocationLimit().

Referenced by IncrementalMarking::Abort(), IncrementalMarking::Finalize(), and IncrementalMarking::Start().

uintptr_t mask ( )

inline

Definition at line 2520 of file spaces.h.

Referenced by Heap::NewSpaceMask().

int MaximumCapacity ( )

inline

Definition at line 2481 of file spaces.h.

References ASSERT, and SemiSpace::MaximumCapacity().

Referenced by Heap::CheckNewSpaceExpansionCriteria(), and NewSpace::Grow().

intptr_t MaximumCommittedMemory ( )

inline

Definition at line 2467 of file spaces.h.

References SemiSpace::MaximumCommittedMemory().

Referenced by Heap::TearDown().

void RecordAllocation

(

HeapObject *

obj

)

Definition at line 1978 of file spaces.cc.

References ASSERT, Map::instance_type(), v8::internal::LAST_TYPE, HeapObject::map(), and HeapObject::Size().

Referenced by NewSpace::CollectStatistics().

void RecordPromotion

(

HeapObject *

obj

)

Definition at line 1986 of file spaces.cc.

References ASSERT, Map::instance_type(), v8::internal::LAST_TYPE, HeapObject::map(), and HeapObject::Size().

void ReportStatistics

(

)

Definition at line 1950 of file spaces.cc.

References NewSpace::Available(), NewSpace::Capacity(), Space::heap(), Heap::isolate(), v8::internal::LAST_TYPE, v8::internal::name, v8::internal::PrintF(), and V8_PTR_PREFIX.

void ResetAllocationInfo

(

)

Definition at line 1359 of file spaces.cc.

References Bitmap::Clear(), and SemiSpace::Reset().

Referenced by NewSpace::SetUp().

void set_age_mark ( Address  mark )

inline

Definition at line 2515 of file spaces.h.

References SemiSpace::set_age_mark().

void set_top ( Address  top )

inline

Definition at line 2498 of file spaces.h.

References ASSERT, MemoryChunk::ContainsLimit(), and SemiSpace::current_page().

Referenced by SeqString::Truncate().

bool SetUp	(	int	reserved_semispace_size_,
		int	max_semispace_size
	)

Definition at line 1220 of file spaces.cc.

References ASSERT, SemiSpace::Commit(), Space::heap(), Heap::InitialSemiSpaceSize(), INSTANCE_TYPE_LIST, SemiSpace::is_committed(), v8::internal::IsAddressAligned(), Heap::isolate(), v8::internal::IsPowerOf2(), v8::internal::kHeapObjectTag, v8::internal::kHeapObjectTagMask, v8::internal::LAST_TYPE, LOG, Isolate::memory_allocator(), v8::internal::NULL, MemoryAllocator::ReserveAlignedMemory(), NewSpace::ResetAllocationInfo(), SET_NAME, SemiSpace::SetUp(), and v8::internal::size.

Referenced by Heap::SetUp(), and TEST().

void Shrink

(

)

Definition at line 1329 of file spaces.cc.

References ASSERT_SEMISPACE_ALLOCATION_INFO, SemiSpace::Capacity(), NewSpace::Capacity(), V8::FatalProcessOutOfMemory(), SemiSpace::GrowTo(), NewSpace::InitialCapacity(), v8::internal::Max(), SemiSpace::Reset(), v8::internal::RoundUp(), SemiSpace::ShrinkTo(), and NewSpace::SizeAsInt().

Referenced by Heap::CollectAllAvailableGarbage(), and TEST().

virtual intptr_t Size ( )

inlinevirtual

Implements Space.

Definition at line 2438 of file spaces.h.

References NewSpacePage::kAreaSize, SemiSpace::page_low(), and NewSpace::top().

Referenced by NewSpace::Available(), StatisticsExtension::GetCounters(), Heap::PrintShortHeapStatistics(), Heap::ShouldBePromoted(), NewSpace::SizeAsInt(), and TEST().

int SizeAsInt ( )

inline

Definition at line 2446 of file spaces.h.

References NewSpace::Size().

Referenced by Heap::RecordStats(), and NewSpace::Shrink().

Address start ( )

inline

Definition at line 2519 of file spaces.h.

Referenced by Heap::NewSpaceStart().

void TearDown

(

)

Definition at line 1277 of file spaces.cc.

References ASSERT, v8::internal::DeleteArray(), MemoryAllocator::FreeMemory(), Space::heap(), Heap::isolate(), VirtualMemory::IsReserved(), LOG, Isolate::memory_allocator(), v8::internal::NOT_EXECUTABLE, v8::internal::NULL, and SemiSpace::TearDown().

Referenced by Heap::TearDown(), and TEST().

Address top ( )

inline

Definition at line 2493 of file spaces.h.

References ASSERT, MemoryChunk::ContainsLimit(), and SemiSpace::current_page().

Referenced by NewSpace::AddFreshPage(), PromotionQueue::insert(), Heap::NewSpaceTop(), SemiSpaceIterator::SemiSpaceIterator(), NewSpace::Size(), and SeqString::Truncate().

bool ToSpaceContains ( Address  address )

inline

Definition at line 2567 of file spaces.h.

References SemiSpace::Contains().

Referenced by Heap::Contains(), Heap::InSpace(), and Heap::InToSpace().

bool ToSpaceContains ( Object *  o )

inline

Definition at line 2577 of file spaces.h.

References SemiSpace::Contains().

Address ToSpaceEnd ( )

inline

Definition at line 2565 of file spaces.h.

References SemiSpace::space_end().

Referenced by PromotionQueue::Initialize().

Address ToSpaceStart ( )

inline

Definition at line 2564 of file spaces.h.

References SemiSpace::space_start().

Referenced by PromotionQueue::Initialize().

bool UncommitFromSpace ( )

inline

Definition at line 2615 of file spaces.h.

References SemiSpace::is_committed(), and SemiSpace::Uncommit().

void UpdateInlineAllocationLimit

(

int

size_in_bytes

)

Definition at line 1371 of file spaces.cc.

References ASSERT_SEMISPACE_ALLOCATION_INFO, Space::heap(), NewSpace::inline_allocation_limit_step(), v8::internal::Min(), and SemiSpace::page_high().

Referenced by Heap::DisableInlineAllocation(), Heap::EnableInlineAllocation(), and NewSpace::LowerInlineAllocationLimit().

Friends And Related Function Documentation

friend class SemiSpaceIterator

friend

Definition at line 2662 of file spaces.h.

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

• src/spaces.h
• src/spaces.cc