NewSpacePage Class Reference

#include <spaces.h>

Inheritance diagram for NewSpacePage:

Collaboration diagram for NewSpacePage:

Public Member Functions
NewSpacePage *	next_page () const
void	set_next_page (NewSpacePage *page)
NewSpacePage *	prev_page () const
void	set_prev_page (NewSpacePage *page)
SemiSpace *	semi_space ()
bool	is_anchor ()
Address	address ()
Public Member Functions inherited from MemoryChunk
Address	address ()
bool	is_valid ()
MemoryChunk *	next_chunk () const
MemoryChunk *	prev_chunk () const
void	set_next_chunk (MemoryChunk *next)
void	set_prev_chunk (MemoryChunk *prev)
Space *	owner () const
void	set_owner (Space *space)
VirtualMemory *	reserved_memory ()
void	InitializeReservedMemory ()
void	set_reserved_memory (VirtualMemory *reservation)
bool	scan_on_scavenge ()
void	initialize_scan_on_scavenge (bool scan)
void	set_scan_on_scavenge (bool scan)
int	store_buffer_counter ()
void	set_store_buffer_counter (int counter)
bool	Contains (Address addr)
bool	ContainsLimit (Address addr)
void	SetFlag (int flag)
void	ClearFlag (int flag)
void	SetFlagTo (int flag, bool value)
bool	IsFlagSet (int flag)
void	SetFlags (intptr_t flags, intptr_t mask)
intptr_t	GetFlags ()
ParallelSweepingState	parallel_sweeping ()
void	set_parallel_sweeping (ParallelSweepingState state)
bool	TryParallelSweeping ()
void	ResetLiveBytes ()
void	IncrementLiveBytes (int by)
int	LiveBytes ()
int	write_barrier_counter ()
void	set_write_barrier_counter (int counter)
int	progress_bar ()
void	set_progress_bar (int progress_bar)
void	ResetProgressBar ()
bool	IsLeftOfProgressBar (Object **slot)
size_t	size () const
void	set_size (size_t size)
void	SetArea (Address area_start, Address area_end)
Executability	executable ()
bool	ContainsOnlyData ()
bool	InNewSpace ()
bool	InToSpace ()
bool	InFromSpace ()
Bitmap *	markbits ()
void	PrintMarkbits ()
uint32_t	AddressToMarkbitIndex (Address addr)
Address	MarkbitIndexToAddress (uint32_t index)
void	InsertAfter (MemoryChunk *other)
void	Unlink ()
Heap *	heap ()
bool	IsEvacuationCandidate ()
bool	ShouldSkipEvacuationSlotRecording ()
SkipList *	skip_list ()
void	set_skip_list (SkipList *skip_list)
SlotsBuffer *	slots_buffer ()
SlotsBuffer **	slots_buffer_address ()
void	MarkEvacuationCandidate ()
void	ClearEvacuationCandidate ()
Address	area_start ()
Address	area_end ()
int	area_size ()
bool	CommitArea (size_t requested)
size_t	CommittedPhysicalMemory ()

Static Public Member Functions
static bool	IsAtStart (Address addr)
static bool	IsAtEnd (Address addr)
static NewSpacePage *	FromAddress (Address address_in_page)
static NewSpacePage *	FromLimit (Address address_limit)
static bool	OnSamePage (Address address1, Address address2)
Static Public Member Functions inherited from MemoryChunk
static MemoryChunk *	FromAddress (Address a)
static MemoryChunk *	FromAnyPointerAddress (Heap *heap, Address addr)
static void	IncrementLiveBytesFromGC (Address address, int by)
static void	IncrementLiveBytesFromMutator (Address address, int by)
static uint32_t	FastAddressToMarkbitIndex (Address addr)
static void	UpdateHighWaterMark (Address mark)

Static Public Attributes
static const intptr_t	kCopyOnFlipFlagsMask
static const int	kAreaSize = Page::kMaxRegularHeapObjectSize
Static Public Attributes inherited from MemoryChunk
static const int	kWriteBarrierCounterGranularity = 500
static const int	kPointersToHereAreInterestingMask
static const int	kPointersFromHereAreInterestingMask
static const int	kEvacuationCandidateMask
static const int	kSkipEvacuationSlotsRecordingMask
static const intptr_t	kAlignment
static const intptr_t	kAlignmentMask = kAlignment - 1
static const intptr_t	kSizeOffset = 0
static const intptr_t	kLiveBytesOffset
static const size_t	kSlotsBufferOffset = kLiveBytesOffset + kIntSize
static const size_t	kWriteBarrierCounterOffset
static const size_t	kHeaderSize
static const int	kBodyOffset
static const int	kObjectStartAlignment = 32 * kPointerSize
static const int	kObjectStartOffset
static const int	kFlagsOffset = kPointerSize

Friends
class	SemiSpace
class	SemiSpaceIterator

Additional Inherited Members
Public Types inherited from MemoryChunk
enum	MemoryChunkFlags {   IS_EXECUTABLE, ABOUT_TO_BE_FREED, POINTERS_TO_HERE_ARE_INTERESTING, POINTERS_FROM_HERE_ARE_INTERESTING,   SCAN_ON_SCAVENGE, IN_FROM_SPACE, IN_TO_SPACE, NEW_SPACE_BELOW_AGE_MARK,   CONTAINS_ONLY_DATA, EVACUATION_CANDIDATE, RESCAN_ON_EVACUATION, WAS_SWEPT_PRECISELY,   WAS_SWEPT_CONSERVATIVELY, HAS_PROGRESS_BAR, NUM_MEMORY_CHUNK_FLAGS }
enum	ParallelSweepingState { PARALLEL_SWEEPING_DONE, PARALLEL_SWEEPING_FINALIZE, PARALLEL_SWEEPING_IN_PROGRESS, PARALLEL_SWEEPING_PENDING }
Static Protected Member Functions inherited from MemoryChunk
static MemoryChunk *	Initialize (Heap *heap, Address base, size_t size, Address area_start, Address area_end, Executability executable, Space *owner)
Protected Attributes inherited from MemoryChunk
size_t	size_
intptr_t	flags_
Address	area_start_
Address	area_end_
VirtualMemory	reservation_
Address	owner_
Heap *	heap_
int	store_buffer_counter_
int	live_byte_count_
SlotsBuffer *	slots_buffer_
SkipList *	skip_list_
intptr_t	write_barrier_counter_
int	progress_bar_
int	high_water_mark_
AtomicWord	parallel_sweeping_
intptr_t	available_in_small_free_list_
intptr_t	available_in_medium_free_list_
intptr_t	available_in_large_free_list_
intptr_t	available_in_huge_free_list_
intptr_t	non_available_small_blocks_

Detailed Description

Definition at line 2042 of file spaces.h.

Member Function Documentation

Address address ( )

inline

Definition at line 2084 of file spaces.h.

Referenced by PromotionQueue::ActivateGuardIfOnTheSamePage().

static NewSpacePage* FromAddress ( Address  address_in_page )

inlinestatic

Definition at line 2089 of file spaces.h.

References Page::kPageAlignmentMask.

Referenced by NewSpacePage::FromLimit(), PromotionQueue::insert(), NewSpacePage::OnSamePage(), PromotionQueue::remove(), Heap::ShouldBePromoted(), and SemiSpace::ShrinkTo().

static NewSpacePage* FromLimit ( Address  address_limit )

inlinestatic

Definition at line 2099 of file spaces.h.

References NewSpacePage::FromAddress().

Referenced by NewSpace::AddFreshPage(), SemiSpaceIterator::Next(), and SemiSpace::set_age_mark().

bool is_anchor ( )

inline

Definition at line 2073 of file spaces.h.

References MemoryChunk::InNewSpace().

Referenced by PromotionQueue::insert(), SemiSpaceIterator::Next(), and PromotionQueue::remove().

static bool IsAtEnd ( Address  addr )

inlinestatic

Definition at line 2080 of file spaces.h.

References Page::kPageAlignmentMask.

Referenced by SemiSpaceIterator::Next().

static bool IsAtStart ( Address  addr )

inlinestatic

Definition at line 2075 of file spaces.h.

References MemoryChunk::kObjectStartOffset, and Page::kPageAlignmentMask.

Referenced by NewSpace::AddFreshPage(), PromotionQueue::insert(), and PromotionQueue::remove().

NewSpacePage* next_page ( ) const

inline

Definition at line 2053 of file spaces.h.

References MemoryChunk::next_chunk().

Referenced by SemiSpace::AdvancePage(), SemiSpace::first_page(), SemiSpaceIterator::Next(), SemiSpace::Reset(), SemiSpace::space_start(), and SemiSpace::Swap().

static bool OnSamePage ( Address  address1, Address  address2  )

inlinestatic

Definition at line 2104 of file spaces.h.

References NewSpacePage::FromAddress().

Referenced by Heap::UpdateAllocationSiteFeedback().

NewSpacePage* prev_page ( ) const

inline

Definition at line 2061 of file spaces.h.

References MemoryChunk::prev_chunk().

Referenced by SemiSpace::GrowTo(), PromotionQueue::insert(), PromotionQueue::remove(), and SemiSpace::space_end().

SemiSpace* semi_space ( )

inline

Definition at line 2069 of file spaces.h.

References MemoryChunk::owner().

void set_next_page ( NewSpacePage *  page )

inline

Definition at line 2057 of file spaces.h.

References MemoryChunk::set_next_chunk().

Referenced by SemiSpace::ShrinkTo(), and SemiSpace::Uncommit().

void set_prev_page ( NewSpacePage *  page )

inline

Definition at line 2065 of file spaces.h.

References MemoryChunk::set_prev_chunk().

Referenced by SemiSpace::ShrinkTo(), and SemiSpace::Uncommit().

Friends And Related Function Documentation

friend class SemiSpace

friend

Definition at line 2125 of file spaces.h.

friend class SemiSpaceIterator

friend

Definition at line 2126 of file spaces.h.

Field Documentation

const int kAreaSize = Page::kMaxRegularHeapObjectSize

static

Definition at line 2051 of file spaces.h.

Referenced by NewSpace::EffectiveCapacity(), and NewSpace::Size().

const intptr_t kCopyOnFlipFlagsMask

static

Initial value:

=
    (1 << MemoryChunk::POINTERS_TO_HERE_ARE_INTERESTING) |
    (1 << MemoryChunk::POINTERS_FROM_HERE_ARE_INTERESTING) |
    (1 << MemoryChunk::SCAN_ON_SCAVENGE)

Definition at line 2046 of file spaces.h.

Referenced by SemiSpace::GrowTo(), and SemiSpace::Swap().

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

• src/spaces.h
• src/spaces.cc