cppgc::internal::ObjectStartBitmap Class Reference

#include <object-start-bitmap.h>

Inheritance diagram for cppgc::internal::ObjectStartBitmap:

Collaboration diagram for cppgc::internal::ObjectStartBitmap:

Public Member Functions
	ObjectStartBitmap ()
template<AccessMode = AccessMode::kNonAtomic>
HeapObjectHeader *	FindHeader (ConstAddress address_maybe_pointing_to_the_middle_of_object) const
template<AccessMode = AccessMode::kNonAtomic>
void	SetBit (ConstAddress)
template<AccessMode = AccessMode::kNonAtomic>
void	ClearBit (ConstAddress)
template<AccessMode = AccessMode::kNonAtomic>
bool	CheckBit (ConstAddress) const
template<typename Callback >
void	Iterate (Callback) const
void	Clear ()
void	MarkAsFullyPopulated ()

Static Public Member Functions
static constexpr size_t	Granularity ()
static constexpr size_t	MaxEntries ()

Private Member Functions
template<AccessMode = AccessMode::kNonAtomic>
void	store (size_t cell_index, uint8_t value)
template<AccessMode = AccessMode::kNonAtomic>
uint8_t	load (size_t cell_index) const
void	ObjectStartIndexAndBit (ConstAddress, size_t *, size_t *) const

Private Attributes
bool	fully_populated_ = false
std::array< uint8_t, kReservedForBitmap >	object_start_bit_map_

Static Private Attributes
static constexpr size_t	kBitsPerCell = sizeof(uint8_t) * CHAR_BIT
static constexpr size_t	kCellMask = kBitsPerCell - 1
static constexpr size_t	kBitmapSize
static constexpr size_t	kReservedForBitmap

Detailed Description

Definition at line 33 of file object-start-bitmap.h.

Constructor & Destructor Documentation

ObjectStartBitmap()

cppgc::internal::ObjectStartBitmap::ObjectStartBitmap ( )

inline

Definition at line 107 of file object-start-bitmap.h.

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Member Function Documentation

CheckBit()

template<AccessMode mode>

bool cppgc::internal::ObjectStartBitmap::CheckBit ( ConstAddress header_address ) const

inline

Definition at line 157 of file object-start-bitmap.h.

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Clear()

void cppgc::internal::ObjectStartBitmap::Clear ( )

inline

Definition at line 220 of file object-start-bitmap.h.

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ClearBit()

template<AccessMode mode>

void cppgc::internal::ObjectStartBitmap::ClearBit ( ConstAddress header_address )

inline

Definition at line 149 of file object-start-bitmap.h.

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FindHeader()

template<AccessMode mode>

HeapObjectHeader * cppgc::internal::ObjectStartBitmap::FindHeader ( ConstAddress address_maybe_pointing_to_the_middle_of_object ) const

inline

Definition at line 113 of file object-start-bitmap.h.

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Granularity()

static constexpr size_t cppgc::internal::ObjectStartBitmap::Granularity ( )

inlinestaticconstexpr

Definition at line 36 of file object-start-bitmap.h.

Iterate()

template<typename Callback >

void cppgc::internal::ObjectStartBitmap::Iterate ( Callback callback ) const

inline

Definition at line 195 of file object-start-bitmap.h.

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load()

template<AccessMode mode>

uint8_t cppgc::internal::ObjectStartBitmap::load ( size_t cell_index ) const

inlineprivate

Definition at line 174 of file object-start-bitmap.h.

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MarkAsFullyPopulated()

void cppgc::internal::ObjectStartBitmap::MarkAsFullyPopulated ( )

inline

Definition at line 215 of file object-start-bitmap.h.

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MaxEntries()

static constexpr size_t cppgc::internal::ObjectStartBitmap::MaxEntries ( )

inlinestaticconstexpr

Definition at line 39 of file object-start-bitmap.h.

ObjectStartIndexAndBit()

void cppgc::internal::ObjectStartBitmap::ObjectStartIndexAndBit ( ConstAddress header_address, size_t * cell_index, size_t * bit ) const

inlineprivate

Definition at line 182 of file object-start-bitmap.h.

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SetBit()

template<AccessMode mode>

void cppgc::internal::ObjectStartBitmap::SetBit ( ConstAddress header_address )

inline

Definition at line 140 of file object-start-bitmap.h.

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store()

template<AccessMode mode>

void cppgc::internal::ObjectStartBitmap::store ( size_t cell_index, uint8_t value )

inlineprivate

Definition at line 164 of file object-start-bitmap.h.

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Member Data Documentation

fully_populated_

bool cppgc::internal::ObjectStartBitmap::fully_populated_ = false

private

Definition at line 101 of file object-start-bitmap.h.

kBitmapSize

size_t cppgc::internal::ObjectStartBitmap::kBitmapSize

staticconstexprprivate

Initial value:

=
      (kPageSize + ((kBitsPerCell * kAllocationGranularity) - 1)) /
      (kBitsPerCell * kAllocationGranularity)

Definition at line 83 of file object-start-bitmap.h.

kBitsPerCell

size_t cppgc::internal::ObjectStartBitmap::kBitsPerCell = sizeof(uint8_t) * CHAR_BIT

staticconstexprprivate

Definition at line 81 of file object-start-bitmap.h.

kCellMask

size_t cppgc::internal::ObjectStartBitmap::kCellMask = kBitsPerCell - 1

staticconstexprprivate

Definition at line 82 of file object-start-bitmap.h.

kReservedForBitmap

size_t cppgc::internal::ObjectStartBitmap::kReservedForBitmap

staticconstexprprivate

Initial value:

=
      ((kBitmapSize + kAllocationMask) & ~kAllocationMask)

Definition at line 86 of file object-start-bitmap.h.

object_start_bit_map_

std::array<uint8_t, kReservedForBitmap> cppgc::internal::ObjectStartBitmap::object_start_bit_map_

private

Definition at line 104 of file object-start-bitmap.h.

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

• src/heap/cppgc/object-start-bitmap.h