Lock module internal inline methods. More...

Functions
static uint32_t	lock_get_type_low (const lock_t *lock)
	Gets the type of a lock. More...

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

static uint32_t	lock_rec_get_n_bits (const lock_t *lock)

static void	lock_rec_set_nth_bit (lock_t *lock, ulint i)
	Sets the nth bit of a record lock to true. More...

static lock_t *	lock_rec_get_next_on_page (lock_t *lock)
	Gets the first or next record lock on a page. More...

static lock_t *	lock_rec_get_first_on_page_addr (hash_table_t *lock_hash, const page_id_t &page_id)

static lock_t *	lock_rec_get_first_on_page (hash_table_t lock_hash, const buf_block_t block)
	Gets the first record lock on a page, where the page is identified by a pointer to it. More...

static lock_t *	lock_rec_get_next (ulint heap_no, lock_t *lock)
	Gets the next explicit lock request on a record. More...

static const lock_t *	lock_rec_get_next_const (ulint heap_no, const lock_t *lock)
	Gets the next explicit lock request on a record. More...

static lock_t *	lock_rec_get_first (hash_table_t hash, const buf_block_t block, ulint heap_no)
	Gets the first explicit lock request on a record. More...

static bool	lock_rec_get_nth_bit (const lock_t *lock, ulint i)
	Gets the nth bit of a record lock. More...

static const lock_t *	lock_rec_get_next_on_page_const (const lock_t *lock)
	Gets the first or next record lock on a page. More...

static enum lock_mode	lock_get_mode (const lock_t *lock)
	Gets the mode of a lock. More...

static ulint	lock_mode_compatible (enum lock_mode mode1, enum lock_mode mode2)
	Calculates if lock mode 1 is compatible with lock mode 2. More...

static bool	lock_mode_stronger_or_eq (enum lock_mode mode1, enum lock_mode mode2)

static ulint	lock_get_wait (const lock_t *lock)
	Gets the wait flag of a lock. More...

static void	lock_reset_lock_and_trx_wait (lock_t *lock)
	The back pointer to a waiting lock request in the transaction is set to NULL and the wait bit in lock type_mode is reset. More...

static bool	lock_table_has (const trx_t trx, const dict_table_t table, lock_mode in_mode)

Detailed Description

Lock module internal inline methods.

Created July 16, 2007 Vasil Dimov

Function Documentation

◆ lock_clust_rec_some_has_impl()

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

inlinestatic

◆ lock_get_mode()

static enum lock_mode lock_get_mode ( const lock_t * lock )

inlinestatic

Gets the mode of a lock.

Returns: mode

Parameters

lock in: lock

◆ lock_get_type_low()

static uint32_t lock_get_type_low ( const lock_t * lock )

inlinestatic

Gets the type of a lock.

Returns: LOCK_TABLE or LOCK_REC

Parameters

lock in: lock

◆ lock_get_wait()

static ulint lock_get_wait ( const lock_t * lock )

inlinestatic

Gets the wait flag of a lock.

Returns: LOCK_WAIT if waiting, 0 if not

Parameters

lock in: lock

◆ lock_mode_compatible()

static ulint lock_mode_compatible	(	enum lock_mode	mode1,
		enum lock_mode	mode2
	)

inlinestatic

Calculates if lock mode 1 is compatible with lock mode 2.

Returns: nonzero if mode1 compatible with mode2

Parameters

mode1	in: lock mode
mode2	in: lock mode

◆ lock_mode_stronger_or_eq()

static bool lock_mode_stronger_or_eq	(	enum lock_mode	mode1,
		enum lock_mode	mode2
	)

inlinestatic

◆ lock_rec_get_first()

static lock_t * lock_rec_get_first	(	hash_table_t *	hash,
		const buf_block_t *	block,
		ulint	heap_no
	)

inlinestatic

Gets the first explicit lock request on a record.

Returns: first lock, NULL if none exists

Parameters

hash	in: hash chain the lock on
block	in: block containing the record
heap_no	in: heap number of the record

◆ lock_rec_get_first_on_page()

static lock_t * lock_rec_get_first_on_page	(	hash_table_t *	lock_hash,
		const buf_block_t *	block
	)

inlinestatic

Gets the first record lock on a page, where the page is identified by a pointer to it.

Returns: first lock, NULL if none exists

Parameters

lock_hash	in: lock hash table
block	in: buffer block

◆ lock_rec_get_first_on_page_addr()

static lock_t * lock_rec_get_first_on_page_addr	(	hash_table_t *	lock_hash,
		const page_id_t &	page_id
	)

inlinestatic

◆ lock_rec_get_n_bits()

static uint32_t lock_rec_get_n_bits ( const lock_t * lock )

inlinestatic

◆ lock_rec_get_next()

static lock_t * lock_rec_get_next	(	ulint	heap_no,
		lock_t *	lock
	)

inlinestatic

Gets the next explicit lock request on a record.

Returns: next lock, NULL if none exists or if heap_no == ULINT_UNDEFINED

Parameters

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

◆ lock_rec_get_next_const()

static const lock_t * lock_rec_get_next_const	(	ulint	heap_no,
		const lock_t *	lock
	)

inlinestatic

Gets the next explicit lock request on a record.

Returns: next lock, NULL if none exists or if heap_no == ULINT_UNDEFINED

Parameters

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

◆ lock_rec_get_next_on_page()

static lock_t * lock_rec_get_next_on_page ( lock_t * lock )

inlinestatic

Gets the first or next record lock on a page.

Returns: next lock, NULL if none exists

Parameters

lock	in: a record lock

◆ lock_rec_get_next_on_page_const()

static const lock_t * lock_rec_get_next_on_page_const ( const lock_t * lock )

inlinestatic

Gets the first or next record lock on a page.

Returns: next lock, NULL if none exists

Parameters

lock	in: a record lock

◆ lock_rec_get_nth_bit()

static bool lock_rec_get_nth_bit	(	const lock_t *	lock,
		ulint	i
	)

inlinestatic

Gets the nth bit of a record lock.

Parameters

[in]	lock	Record lock
[in]	i	Index of the bit to check

Returns: true if bit set also if i == ULINT_UNDEFINED return false

◆ lock_rec_set_nth_bit()

static void lock_rec_set_nth_bit	(	lock_t *	lock,
		ulint	i
	)

inlinestatic

Sets the nth bit of a record lock to true.

Parameters

lock	in: record lock
i	in: index of the bit

◆ lock_reset_lock_and_trx_wait()

static void lock_reset_lock_and_trx_wait ( lock_t * lock )

inlinestatic

The back pointer to a waiting lock request in the transaction is set to NULL and the wait bit in lock type_mode is reset.

Parameters

lock	in/out: record lock

◆ lock_table_has()

static bool lock_table_has	(	const trx_t *	trx,
		const dict_table_t *	table,
		lock_mode	in_mode
	)

inlinestatic

Functions

Detailed Description

Function Documentation

◆ lock_clust_rec_some_has_impl()

◆ lock_get_mode()

◆ lock_get_type_low()

◆ lock_get_wait()

◆ lock_mode_compatible()

◆ lock_mode_stronger_or_eq()

◆ lock_rec_get_first()

◆ lock_rec_get_first_on_page()

◆ lock_rec_get_first_on_page_addr()

◆ lock_rec_get_n_bits()

◆ lock_rec_get_next()

◆ lock_rec_get_next_const()

◆ lock_rec_get_next_on_page()

◆ lock_rec_get_next_on_page_const()

◆ lock_rec_get_nth_bit()

◆ lock_rec_set_nth_bit()

◆ lock_reset_lock_and_trx_wait()

◆ lock_table_has()