RecID Struct Reference

Record lock ID. More...

#include <lock0priv.h>

Public Member Functions
	RecID (const lock_t *lock, ulint heap_no)
	Constructor. More...
	RecID (page_id_t page_id, uint32_t heap_no)
	Constructor. More...
	RecID (const buf_block_t *block, ulint heap_no)
	Constructor. More...
uint64_t	hash_value () const
bool	is_supremum () const
bool	matches (const lock_t *lock) const
const page_id_t &	get_page_id () const

Public Attributes
page_id_t	m_page_id
	Tablespace ID and page number within space More...
uint32_t	m_heap_no
	Heap number within the page. More...
uint64_t	m_hash_value
	Hash generated from record's location which will be used to get lock queue for this record. More...

Detailed Description

Record lock ID.

Constructor & Destructor Documentation

RecID() [1/3]

RecID::RecID ( const lock_t *  lock, ulint  heap_no  )

inline

Constructor.

Parameters

[in]	lock	Record lock
[in]	heap_no	Heap number in the page

RecID() [2/3]

RecID::RecID ( page_id_t  page_id, uint32_t  heap_no  )

inline

Constructor.

Parameters

[in]	page_id	Tablespace ID and page number within space
[in]	heap_no	Heap number in the page

RecID() [3/3]

RecID::RecID ( const buf_block_t *  block, ulint  heap_no  )

inline

Constructor.

Parameters

[in]	block	Block in a tablespace
[in]	heap_no	Heap number in the block

Member Function Documentation

get_page_id()

const page_id_t & RecID::get_page_id ( ) const

inline

hash_value()

uint64_t RecID::hash_value ( ) const

inline

Returns

the hashed value of {space, page_no}

is_supremum()

bool RecID::is_supremum ( ) const

inline

Returns

true if it's the supremum record

matches()

bool RecID::matches ( const lock_t *  lock ) const

inline

Member Data Documentation

m_hash_value

uint64_t RecID::m_hash_value

Hash generated from record's location which will be used to get lock queue for this record.

m_heap_no

uint32_t RecID::m_heap_no

Heap number within the page.

m_page_id

page_id_t RecID::m_page_id

Tablespace ID and page number within space

---

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

• storage/innobase/include/lock0priv.h
• storage/innobase/include/lock0priv.ic