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	Available ()
int	MaximumCapacity ()
int	InitialCapacity ()
Address	top ()
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	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 ()
virtual bool	ReserveSpace (int bytes)
template<typename StringType >
void	ShrinkStringAtAllocationBoundary (String *string, int len)
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 2088 of file spaces.h.

Constructor & Destructor Documentation

NewSpace ( Heap *  heap )

inlineexplicit

Definition at line 2091 of file spaces.h.

Member Function Documentation

SemiSpace* active_space ( )

inline

Definition at line 2304 of file spaces.h.

Referenced by PromotionQueue::ActivateGuardIfOnTheSamePage().

bool AddFreshPage

(

)

Definition at line 1204 of file spaces.cc.

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

Referenced by Runtime::PerformGC().

Address age_mark ( )

inline

Definition at line 2187 of file spaces.h.

References SemiSpace::age_mark().

Referenced by Heap::ShouldBePromoted().

Address* allocation_limit_address ( )

inline

Definition at line 2209 of file spaces.h.

References AllocationInfo::limit.

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

Address* allocation_top_address ( )

inline

Definition at line 2208 of file spaces.h.

References AllocationInfo::top.

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

intptr_t Available ( )

inline

Definition at line 2162 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 2184 of file spaces.h.

References SemiSpace::space_start().

Referenced by SemiSpaceIterator::SemiSpaceIterator().

intptr_t Capacity ( )

inline

Definition at line 2150 of file spaces.h.

References ASSERT, and SemiSpace::Capacity().

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

void ClearHistograms

(

)

Definition at line 1735 of file spaces.cc.

References v8::internal::LAST_TYPE.

Referenced by NewSpace::CollectStatistics().

void CollectStatistics

(

)

Definition at line 1745 of file spaces.cc.

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

bool CommitFromSpaceIfNeeded ( )

inline

Definition at line 2290 of file spaces.h.

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

Referenced by Heap::EnsureFromSpaceIsCommitted().

intptr_t CommittedMemory ( )

inline

Definition at line 2156 of file spaces.h.

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

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

bool Contains ( Address  a )

inline

Definition at line 2122 of file spaces.h.

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

bool Contains ( Object *  o )

inline

Definition at line 2127 of file spaces.h.

intptr_t EffectiveCapacity ( )

inline

Definition at line 2144 of file spaces.h.

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

Referenced by Heap::ShouldBePromoted().

void Flip

(

)

Definition at line 1130 of file spaces.cc.

References SemiSpace::Swap().

bool FromSpaceContains ( Address  address )

inline

Definition at line 2243 of file spaces.h.

References SemiSpace::Contains().

Referenced by Heap::InFromSpace().

bool FromSpaceContains ( Object *  o )

inline

Definition at line 2251 of file spaces.h.

References SemiSpace::Contains().

Address FromSpaceEnd ( )

inline

Definition at line 2234 of file spaces.h.

References SemiSpace::space_end().

Referenced by IncrementalMarking::PrepareForScavenge(), and Heap::ZapFromSpace().

Address FromSpacePageHigh ( )

inline

Definition at line 2232 of file spaces.h.

References SemiSpace::page_high().

Address FromSpacePageLow ( )

inline

Definition at line 2231 of file spaces.h.

References SemiSpace::page_low().

Address FromSpaceStart ( )

inline

Definition at line 2233 of file spaces.h.

References SemiSpace::space_start().

Referenced by IncrementalMarking::PrepareForScavenge(), and Heap::ZapFromSpace().

void Grow

(

)

Definition at line 1135 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 2106 of file spaces.h.

References SemiSpace::HasBeenSetUp().

Referenced by TEST().

int InitialCapacity ( )

inline

Definition at line 2173 of file spaces.h.

References ASSERT, and SemiSpace::InitialCapacity().

Referenced by NewSpace::ReserveSpace(), and NewSpace::Shrink().

INLINE ( uint32_t   AddressToMarkbitIndexAddress addr )

inline

Definition at line 2196 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 2203 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 2300 of file spaces.h.

void LowerInlineAllocationLimit ( intptr_t  step )

inline

Definition at line 2216 of file spaces.h.

References AllocationInfo::limit, v8::internal::Min(), SemiSpace::page_high(), and AllocationInfo::top.

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

uintptr_t mask ( )

inline

Definition at line 2194 of file spaces.h.

Referenced by Heap::NewSpaceMask().

int MaximumCapacity ( )

inline

Definition at line 2167 of file spaces.h.

References ASSERT, and SemiSpace::MaximumCapacity().

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

void RecordAllocation

(

HeapObject *

obj

)

Definition at line 1809 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 1817 of file spaces.cc.

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

void ReportStatistics

(

)

Definition at line 1781 of file spaces.cc.

References NewSpace::Available(), NewSpace::Capacity(), ISOLATE, v8::internal::LAST_TYPE, v8::internal::PrintF(), and V8_PTR_PREFIX.

bool ReserveSpace ( int  bytes )

virtual

Definition at line 2191 of file spaces.cc.

References HeapObject::address(), ASSERT, HeapObject::cast(), NewSpace::InitialCapacity(), v8::internal::NULL, and AllocationInfo::top.

void ResetAllocationInfo

(

)

Definition at line 1192 of file spaces.cc.

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

Referenced by NewSpace::SetUp().

void set_age_mark ( Address  mark )

inline

Definition at line 2189 of file spaces.h.

References SemiSpace::set_age_mark().

bool SetUp	(	int	reserved_semispace_size_,
		int	max_semispace_size
	)

Definition at line 1046 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, and SemiSpace::SetUp().

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

void Shrink

(

)

Definition at line 1155 of file spaces.cc.

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

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

void ShrinkStringAtAllocationBoundary ( String *  string, int  len  )

inline

Definition at line 342 of file spaces-inl.h.

References HeapObject::address(), ASSERT, MemoryChunk::IncrementLiveBytesFromMutator(), Marking::IsBlack(), String::length(), Marking::MarkBitFrom(), and AllocationInfo::top.

virtual intptr_t Size ( )

inlinevirtual

Implements Space.

Definition at line 2133 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 2141 of file spaces.h.

References NewSpace::Size().

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

Address start ( )

inline

Definition at line 2193 of file spaces.h.

Referenced by Heap::NewSpaceStart().

void TearDown

(

)

Definition at line 1103 of file spaces.cc.

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

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

Address top ( )

inline

Definition at line 2179 of file spaces.h.

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

Referenced by NewSpace::AddFreshPage(), Heap::NewSpaceTop(), SemiSpaceIterator::SemiSpaceIterator(), and NewSpace::Size().

bool ToSpaceContains ( Address  address )

inline

Definition at line 2240 of file spaces.h.

References SemiSpace::Contains().

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

bool ToSpaceContains ( Object *  o )

inline

Definition at line 2250 of file spaces.h.

References SemiSpace::Contains().

Address ToSpaceEnd ( )

inline

Definition at line 2238 of file spaces.h.

References SemiSpace::space_end().

Referenced by PromotionQueue::Initialize().

Address ToSpaceStart ( )

inline

Definition at line 2237 of file spaces.h.

References SemiSpace::space_start().

Referenced by PromotionQueue::Initialize().

bool UncommitFromSpace ( )

inline

Definition at line 2295 of file spaces.h.

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

Referenced by Heap::UncommitFromSpace().

Friends And Related Function Documentation

friend class SemiSpaceIterator

friend

Definition at line 2342 of file spaces.h.

---

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

• src/spaces.h
• src/spaces-inl.h
• src/spaces.cc