lock0priv.h File Reference

#include "univ.i"
#include "dict0types.h"
#include "hash0hash.h"
#include "trx0types.h"
#include "ut0lst.h"
#include "lock0priv.ic"

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Classes
struct	lock_table_t
struct	lock_rec_t
struct	lock_t

Functions
UNIV_INLINE ulint	lock_get_type_low (const lock_t *lock)
UNIV_INTERN const lock_t *	lock_rec_get_prev (const lock_t *in_lock, ulint heap_no)
UNIV_INTERN void	lock_cancel_waiting_and_release (lock_t *lock)
UNIV_INLINE trx_id_t	lock_clust_rec_some_has_impl (const rec_t *rec, const dict_index_t *index, const ulint *offsets) __attribute__((nonnull

Variables
UNIV_INLINE trx_id_t	warn_unused_result

Detailed Description

Lock module internal structures and methods.

Created July 12, 2007 Vasil Dimov

Definition in file lock0priv.h.

Function Documentation

UNIV_INTERN void lock_cancel_waiting_and_release

(

lock_t *

lock

)

Cancels a waiting lock request and releases possible other transactions waiting behind it. in/out: waiting lock request

Cancels a waiting lock request and releases possible other transactions waiting behind it.

Parameters

lock	in/out: waiting lock request

Definition at line 6719 of file lock0lock.cc.

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UNIV_INLINE trx_id_t lock_clust_rec_some_has_impl	(	const rec_t *	rec,
		const dict_index_t *	index,
		const ulint *	offsets
	)

Checks if some transaction has an implicit x-lock on a record in a clustered index.

Returns

transaction id of the transaction which has the x-lock, or 0

Parameters

rec	in: user record
index	in: clustered index
offsets	in: rec_get_offsets(rec, index)

UNIV_INLINE ulint lock_get_type_low

(

const lock_t *

lock

)

Gets the type of a lock.

Returns

LOCK_TABLE or LOCK_REC in: lock

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UNIV_INTERN const lock_t* lock_rec_get_prev	(	const lock_t *	in_lock,
		ulint	heap_no
	)

Gets the previous record lock set on a record.

Returns

previous lock on the same record, NULL if none exists in: heap number of the record

Gets the previous record lock set on a record.

Returns

previous lock on the same record, NULL if none exists

Parameters

in_lock	in: record lock
heap_no	in: heap number of the record

Definition at line 1385 of file lock0lock.cc.

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