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 ()
void	ResetLiveBytes ()
void	IncrementLiveBytes (int by)
int	LiveBytes ()
int	write_barrier_counter ()
void	set_write_barrier_counter (int counter)
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 ()

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 Public Member Functions inherited from MemoryChunk
static MemoryChunk *	FromAddress (Address a)
static MemoryChunk *	FromAnyPointerAddress (Address addr)
static void	IncrementLiveBytesFromGC (Address address, int by)
static void	IncrementLiveBytesFromMutator (Address address, int by)
static uint32_t	FastAddressToMarkbitIndex (Address addr)

Static Public Attributes
static const intptr_t	kCopyOnFlipFlagsMask
static const int	kAreaSize = Page::kNonCodeObjectAreaSize
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 = kPointerSize + kPointerSize
static const intptr_t	kLiveBytesOffset
static const size_t	kSlotsBufferOffset = kLiveBytesOffset + kIntSize
static const size_t	kWriteBarrierCounterOffset
static const size_t	kHeaderSize = kWriteBarrierCounterOffset + kPointerSize
static const int	kBodyOffset
static const int	kObjectStartAlignment = 32 * kPointerSize
static const int	kObjectStartOffset
static const int	kFlagsOffset = kPointerSize * 3

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, NUM_MEMORY_CHUNK_FLAGS }
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
MemoryChunk *	next_chunk_
MemoryChunk *	prev_chunk_
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_

Detailed Description

Definition at line 1749 of file spaces.h.

Member Function Documentation

Address address ( )

inline

Definition at line 1791 of file spaces.h.

Referenced by PromotionQueue::ActivateGuardIfOnTheSamePage().

static NewSpacePage* FromAddress ( Address  address_in_page )

inlinestatic

Definition at line 1796 of file spaces.h.

References Page::kPageAlignmentMask.

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

static NewSpacePage* FromLimit ( Address  address_limit )

inlinestatic

Definition at line 1806 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 1780 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 1787 of file spaces.h.

References Page::kPageAlignmentMask.

Referenced by SemiSpaceIterator::Next().

static bool IsAtStart ( Address  addr )

inlinestatic

Definition at line 1782 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 1760 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().

NewSpacePage* prev_page ( ) const

inline

Definition at line 1768 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 1776 of file spaces.h.

References MemoryChunk::owner().

void set_next_page ( NewSpacePage *  page )

inline

Definition at line 1764 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 1772 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 1826 of file spaces.h.

friend class SemiSpaceIterator

friend

Definition at line 1827 of file spaces.h.

Field Documentation

const int kAreaSize = Page::kNonCodeObjectAreaSize

static

Definition at line 1758 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 1753 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