#include <qv4mmdefs_p.h>

Collaboration diagram for QV4::Chunk:

Public Types
enum	{ ChunkSize = 641024 , ChunkShift = 16 , SlotSize = 32 , SlotSizeShift = 5 , NumSlots = ChunkSize/SlotSize , BitmapSize = NumSlots/8 , HeaderSize = 3BitmapSize , DataSize = ChunkSize - HeaderSize , AvailableSlots = DataSize/SlotSize , Bits = 32 , BitShift = 5 , EntriesInBitmap = BitmapSize/sizeof(quintptr) }

Public Member Functions
HeapItem *	realBase ()

HeapItem *	first ()

uint	nFreeSlots () const

uint	nUsedSlots () const

bool	sweep (ClassDestroyStatsCallback classCountPtr)

void	resetBlackBits ()

bool	sweep (ExecutionEngine *engine)

void	freeAll (ExecutionEngine *engine)

void	sortIntoBins (HeapItem **bins, uint nBins)

Static Public Member Functions
static Q_ALWAYS_INLINE size_t	bitmapIndex (size_t index)

static Q_ALWAYS_INLINE quintptr	bitForIndex (size_t index)

static void	setBit (quintptr *bitmap, size_t index)

static void	clearBit (quintptr *bitmap, size_t index)

static bool	testBit (quintptr *bitmap, size_t index)

static void	setBits (quintptr *bitmap, size_t index, size_t nBits)

static bool	hasNonZeroBit (quintptr *bitmap)

static uint	lowestNonZeroBit (quintptr *bitmap)

Public Attributes
quintptr	blackBitmap [BitmapSize/sizeof(quintptr)]

quintptr	objectBitmap [BitmapSize/sizeof(quintptr)]

quintptr	extendsBitmap [BitmapSize/sizeof(quintptr)]

char	data [ChunkSize - HeaderSize]

Detailed Description

Definition at line 54 of file qv4mmdefs_p.h.

Member Enumeration Documentation

◆ anonymous enum

anonymous enum

Enumerator
ChunkSize
ChunkShift
SlotSize
SlotSizeShift
NumSlots
BitmapSize
HeaderSize
DataSize
AvailableSlots
Bits
BitShift
EntriesInBitmap

Definition at line 55 of file qv4mmdefs_p.h.

Member Function Documentation

◆ bitForIndex()

static Q_ALWAYS_INLINE quintptr QV4::Chunk::bitForIndex ( size_t index )

inlinestatic

Definition at line 85 of file qv4mmdefs_p.h.

References Bits.

Referenced by clearBit(), QV4::Heap::Base::mark(), setBit(), and testBit().

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◆ bitmapIndex()

static Q_ALWAYS_INLINE size_t QV4::Chunk::bitmapIndex ( size_t index )

inlinestatic

Definition at line 82 of file qv4mmdefs_p.h.

References BitShift.

Referenced by clearBit(), QV4::Heap::Base::mark(), setBit(), and testBit().

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◆ clearBit()

static void QV4::Chunk::clearBit	(	quintptr *	bitmap,
		size_t	index
	)

inlinestatic

Definition at line 95 of file qv4mmdefs_p.h.

References bitForIndex(), and bitmapIndex().

Referenced by QV4::MemoryManager::allocObjectWithMemberData().

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◆ first()

HeapItem * QV4::Chunk::first ( )

inline

Definition at line 218 of file qv4mmdefs_p.h.

References data.

Referenced by QV4::BlockAllocator::allocate(), and QV4::freeHugeChunk().

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◆ freeAll()

void QV4::Chunk::freeAll ( ExecutionEngine * engine )

Definition at line 329 of file qv4mm.cpp.

References e, engine, i, o, Q_ASSERT, Q_V4_PROFILE_DEALLOC, qCountTrailingZeroBits(), and qPopulationCount().

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◆ hasNonZeroBit()

static bool QV4::Chunk::hasNonZeroBit ( quintptr * bitmap )

inlinestatic

Definition at line 124 of file qv4mmdefs_p.h.

References EntriesInBitmap, and i.

◆ lowestNonZeroBit()

static uint QV4::Chunk::lowestNonZeroBit ( quintptr * bitmap )

inlinestatic

Definition at line 130 of file qv4mmdefs_p.h.

References Bits, EntriesInBitmap, i, and qCountTrailingZeroBits().

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◆ nFreeSlots()

uint QV4::Chunk::nFreeSlots ( ) const

inline

Definition at line 140 of file qv4mmdefs_p.h.

References AvailableSlots, and nUsedSlots().

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◆ nUsedSlots()

uint QV4::Chunk::nUsedSlots ( ) const

inline

Definition at line 143 of file qv4mmdefs_p.h.

References EntriesInBitmap, extendsBitmap, i, objectBitmap, and qPopulationCount().

Referenced by nFreeSlots().

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◆ realBase()

HeapItem * QV4::Chunk::realBase ( )

inline

Definition at line 213 of file qv4mmdefs_p.h.

Referenced by QV4::Heap::Base::mark().

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◆ resetBlackBits()

void QV4::Chunk::resetBlackBits ( )

Definition at line 372 of file qv4mm.cpp.

◆ setBit()

static void QV4::Chunk::setBit	(	quintptr *	bitmap,
		size_t	index
	)

inlinestatic

Definition at line 89 of file qv4mmdefs_p.h.

References bitForIndex(), and bitmapIndex().

Referenced by QV4::MemoryManager::allocObjectWithMemberData(), and QV4::HeapItem::setAllocatedSlots().

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◆ setBits()

static void QV4::Chunk::setBits	(	quintptr *	bitmap,
		size_t	index,
		size_t	nBits
	)

inlinestatic

Definition at line 107 of file qv4mmdefs_p.h.

References Bits, BitShift, and qMin().

Referenced by QV4::HeapItem::setAllocatedSlots().

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◆ sortIntoBins()

void QV4::Chunk::sortIntoBins	(	HeapItem **	bins,
		uint	nBins
	)

Definition at line 377 of file qv4mm.cpp.

References QV4::HeapItem::availableSlots, base, QV4::HeapItem::freeData, HeaderSize, i, QV4::HeapItem::next, Q_ASSERT, qCountTrailingZeroBits(), qMin(), and qPopulationCount().

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◆ sweep() [1/2]

bool QV4::Chunk::sweep ( ClassDestroyStatsCallback classCountPtr )

◆ sweep() [2/2]

bool QV4::Chunk::sweep ( ExecutionEngine * engine )

Definition at line 267 of file qv4mm.cpp.

References QV4::VTable::destroy, e, engine, i, o, Q_ASSERT, Q_V4_PROFILE_DEALLOC, qCountTrailingZeroBits(), qPopulationCount(), and SDUMP.

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◆ testBit()

static bool QV4::Chunk::testBit	(	quintptr *	bitmap,
		size_t	index
	)

inlinestatic

Definition at line 101 of file qv4mmdefs_p.h.

References bitForIndex(), and bitmapIndex().

Referenced by QV4::HeapItem::isBlack(), QV4::HeapItem::isInUse(), QV4::Heap::Base::mark(), and QV4::HeapItem::size().

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Member Data Documentation

◆ blackBitmap

quintptr QV4::Chunk::blackBitmap[BitmapSize/sizeof(quintptr)]

Definition at line 74 of file qv4mmdefs_p.h.

◆ data

char QV4::Chunk::data[ChunkSize - HeaderSize]

Definition at line 77 of file qv4mmdefs_p.h.

Referenced by first().

◆ extendsBitmap

quintptr QV4::Chunk::extendsBitmap[BitmapSize/sizeof(quintptr)]

Definition at line 76 of file qv4mmdefs_p.h.

Referenced by nUsedSlots().

◆ objectBitmap

quintptr QV4::Chunk::objectBitmap[BitmapSize/sizeof(quintptr)]

Definition at line 75 of file qv4mmdefs_p.h.

Referenced by nUsedSlots().

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

qtdeclarative/src/qml/memory/qv4mmdefs_p.h
qtdeclarative/src/qml/memory/qv4mm.cpp

Public Types

Public Member Functions

Static Public Member Functions

Public Attributes

Detailed Description

Member Enumeration Documentation

◆ anonymous enum

Member Function Documentation

◆ bitForIndex()

◆ bitmapIndex()

◆ clearBit()

◆ first()

◆ freeAll()

◆ hasNonZeroBit()

◆ lowestNonZeroBit()

◆ nFreeSlots()

◆ nUsedSlots()

◆ realBase()

◆ resetBlackBits()

◆ setBit()

◆ setBits()

◆ sortIntoBins()

◆ sweep() [1/2]

◆ sweep() [2/2]

◆ testBit()

Member Data Documentation

◆ blackBitmap

◆ data

◆ extendsBitmap

◆ objectBitmap