Bitmap Class Reference

#include <spaces.h>

Data Structures
class	CellPrinter

Public Member Functions
int	CellsCount ()
	INLINE (static uint32_t IndexToCell(uint32_t index))
	INLINE (static uint32_t CellToIndex(uint32_t index))
	INLINE (static uint32_t CellAlignIndex(uint32_t index))
	INLINE (MarkBit::CellType *cells())
	INLINE (Address address())
	INLINE (static Bitmap *FromAddress(Address addr))
MarkBit	MarkBitFromIndex (uint32_t index, bool data_only=false)
void	Print ()
bool	IsClean ()

Static Public Member Functions
static int	CellsForLength (int length)
static int	SizeFor (int cells_count)
static void	Clear (MemoryChunk *chunk)
static void	PrintWord (uint32_t word, uint32_t himask=0)

Static Public Attributes
static const uint32_t	kBitsPerCell = 32
static const uint32_t	kBitsPerCellLog2 = 5
static const uint32_t	kBitIndexMask = kBitsPerCell - 1
static const uint32_t	kBytesPerCell = kBitsPerCell / kBitsPerByte
static const uint32_t	kBytesPerCellLog2 = kBitsPerCellLog2 - kBitsPerByteLog2
static const size_t	kLength
static const size_t	kSize

Detailed Description

Definition at line 166 of file spaces.h.

Member Function Documentation

int CellsCount ( )

inline

Definition at line 185 of file spaces.h.

References Bitmap::CellsForLength(), and Bitmap::kLength.

Referenced by Bitmap::Clear(), Bitmap::IsClean(), and Bitmap::Print().

static int CellsForLength ( int  length )

inlinestatic

Definition at line 181 of file spaces.h.

References Bitmap::kBitsPerCell, and Bitmap::kBitsPerCellLog2.

Referenced by Bitmap::CellsCount().

void Clear ( MemoryChunk *  chunk )

inlinestatic

Definition at line 43 of file spaces-inl.h.

References Bitmap::CellsCount(), MemoryChunk::markbits(), and MemoryChunk::ResetLiveBytes().

Referenced by SemiSpace::GrowTo(), MemoryChunk::Initialize(), PagedSpace::PrepareForMarkCompact(), IncrementalMarking::PrepareForScavenge(), and NewSpace::ResetAllocationInfo().

INLINE ( static uint32_t   IndexToCelluint32_t index )

inline

Definition at line 193 of file spaces.h.

References Bitmap::kBitsPerCellLog2.

INLINE ( static uint32_t   CellToIndexuint32_t index )

inline

Definition at line 197 of file spaces.h.

References Bitmap::kBitsPerCellLog2.

INLINE ( static uint32_t   CellAlignIndexuint32_t index )

inline

Definition at line 201 of file spaces.h.

References Bitmap::kBitIndexMask.

INLINE ( MarkBit::CellType *  cells() )

inline

Definition at line 205 of file spaces.h.

INLINE ( Address   address() )

inline

Definition at line 209 of file spaces.h.

INLINE ( static Bitmap *  FromAddressAddress addr )

inline

Definition at line 213 of file spaces.h.

bool IsClean ( )

inline

Definition at line 284 of file spaces.h.

References Bitmap::CellsCount().

MarkBit MarkBitFromIndex ( uint32_t  index, bool  data_only = false  )

inline

Definition at line 217 of file spaces.h.

References Bitmap::kBitIndexMask, and Bitmap::kBitsPerCellLog2.

void Print ( )

inline

Definition at line 275 of file spaces.h.

References Bitmap::CellsCount(), Bitmap::CellPrinter::Flush(), Bitmap::CellPrinter::Print(), and v8::internal::PrintF().

Referenced by MemoryChunk::PrintMarkbits().

static void PrintWord ( uint32_t  word, uint32_t  himask = 0  )

inlinestatic

Definition at line 225 of file spaces.h.

References v8::internal::PrintF().

Referenced by Bitmap::CellPrinter::Print().

static int SizeFor ( int  cells_count )

inlinestatic

Definition at line 189 of file spaces.h.

Field Documentation

const uint32_t kBitIndexMask = kBitsPerCell - 1

static

Definition at line 170 of file spaces.h.

Referenced by Bitmap::INLINE(), and Bitmap::MarkBitFromIndex().

const uint32_t kBitsPerCell = 32

static

Definition at line 168 of file spaces.h.

Referenced by Bitmap::CellsForLength(), and Bitmap::CellPrinter::Flush().

const uint32_t kBitsPerCellLog2 = 5

static

Definition at line 169 of file spaces.h.

Referenced by Bitmap::CellsForLength(), Bitmap::INLINE(), and Bitmap::MarkBitFromIndex().

const uint32_t kBytesPerCell = kBitsPerCell / kBitsPerByte

static

Definition at line 171 of file spaces.h.

const uint32_t kBytesPerCellLog2 = kBitsPerCellLog2 - kBitsPerByteLog2

static

Definition at line 172 of file spaces.h.

const size_t kLength

static

Initial value:

=
    (1 << kPageSizeBits) >> (kPointerSizeLog2)

Definition at line 174 of file spaces.h.

Referenced by Bitmap::CellsCount().

const size_t kSize

static

Initial value:

=
    (1 << kPageSizeBits) >> (kPointerSizeLog2 + kBitsPerByteLog2)

Definition at line 177 of file spaces.h.

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

• src/spaces.h
• src/spaces-inl.h