Chnunk_Bitmap Class Reference

Bitmap for completed chunks in current state. More...

#include <clone0desc.h>

Classes
class	Bitmap_Operator_Impl
	Bitmap array index operator implementation. More...

Public Member Functions
	Chnunk_Bitmap ()
	Construct bitmap. More...
Bitmap_Operator_Impl	operator[] (uint32_t index)
	Array index operator. More...
uint32_t *	reset (uint32_t max_bits, mem_heap_t *heap)
	Reset bitmap with new size. More...
uint32_t	get_min_unset_bit ()
	Get minimum BIT position that is not set. More...
uint32_t	get_max_set_bit ()
	Get maximum BIT position that is not set. More...
void	serialize (byte *&desc_chunk, uint &len)
	Serialize the descriptor. More...
void	deserialize (const byte *desc_chunk, uint &len_left)
	Deserialize the descriptor. More...
size_t	get_serialized_length ()
	Get the length of serialized data. More...
size_t	capacity () const
	Maximum bit capacity. More...
size_t	size () const
	Size of bitmap in bytes. More...
uint32_t	size_bits () const
	Size of bitmap in bits. More...

Private Attributes
uint32_t *	m_bitmap
	BITMAP buffer. More...
size_t	m_size
	BITMAP buffer size: Number of 4 byte blocks. More...
uint32_t	m_bits
	Total number of BITs in the MAP. More...

Detailed Description

Bitmap for completed chunks in current state.

Constructor & Destructor Documentation

Chnunk_Bitmap()

Chnunk_Bitmap::Chnunk_Bitmap ( )

inline

Construct bitmap.

Member Function Documentation

capacity()

size_t Chnunk_Bitmap::capacity ( ) const

inline

Maximum bit capacity.

Returns

maximum number of BITs it can hold

deserialize()

void Chnunk_Bitmap::deserialize	(	const byte *	desc_chunk,
		uint &	len_left
	)

Deserialize the descriptor.

Parameters

[in]	desc_chunk	serialized chunk info
[in,out]	len_left	length left in bytes

get_max_set_bit()

uint32_t Chnunk_Bitmap::get_max_set_bit

(

)

Get maximum BIT position that is not set.

Returns

BIT position

get_min_unset_bit()

uint32_t Chnunk_Bitmap::get_min_unset_bit

(

)

Get minimum BIT position that is not set.

Returns

BIT position

get_serialized_length()

size_t Chnunk_Bitmap::get_serialized_length

(

)

Get the length of serialized data.

Returns

length serialized chunk info

operator[]()

Bitmap_Operator_Impl Chnunk_Bitmap::operator[] ( uint32_t  index )

inline

Array index operator.

Parameters

[in]

index

bitmap array index

Returns

operator implementation object

reset()

uint32_t * Chnunk_Bitmap::reset	(	uint32_t	max_bits,
		mem_heap_t *	heap
	)

Reset bitmap with new size.

Parameters

[in]	max_bits	number of BITs to hold
[in]	heap	heap for allocating memory

Returns

old buffer pointer

serialize()

void Chnunk_Bitmap::serialize	(	byte *&	desc_chunk,
		uint &	len
	)

Serialize the descriptor.

Caller should pass the length if allocated.

Parameters

[out]	desc_chunk	serialized chunk info
[in,out]	len	length of serialized descriptor

size()

size_t Chnunk_Bitmap::size ( ) const

inline

Size of bitmap in bytes.

Returns

BITMAP buffer size

size_bits()

uint32_t Chnunk_Bitmap::size_bits ( ) const

inline

Size of bitmap in bits.

Returns

number of BITs stored

Member Data Documentation

m_bitmap

uint32_t* Chnunk_Bitmap::m_bitmap

private

BITMAP buffer.

m_bits

uint32_t Chnunk_Bitmap::m_bits

private

Total number of BITs in the MAP.

m_size

size_t Chnunk_Bitmap::m_size

private

BITMAP buffer size: Number of 4 byte blocks.

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

• storage/innobase/include/clone0desc.h
• storage/innobase/clone/clone0desc.cc