lock0priv.ic File Reference

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

static uint32_t lock_rec_get_n_bits ( const lock_t *  lock )

inlinestatic

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