diff options
Diffstat (limited to 'innobase/include')
| -rw-r--r-- | innobase/include/lock0lock.h | 5 | ||||
| -rw-r--r-- | innobase/include/row0mysql.h | 7 | ||||
| -rw-r--r-- | innobase/include/trx0trx.h | 5 |
3 files changed, 10 insertions, 7 deletions
diff --git a/innobase/include/lock0lock.h b/innobase/include/lock0lock.h index 9c5f35c6674..9f525042dcc 100644 --- a/innobase/include/lock0lock.h +++ b/innobase/include/lock0lock.h @@ -418,7 +418,8 @@ lock_release_off_kernel( /*====================*/ trx_t* trx); /* in: transaction */ /************************************************************************* -Releases table locks, and releases possible other transactions waiting +Releases table locks explicitly requested with LOCK TABLES (indicated by +lock type LOCK_TABLE_EXP), and releases possible other transactions waiting because of these locks. */ void @@ -548,7 +549,7 @@ extern lock_sys_t* lock_sys; /* Lock types */ #define LOCK_TABLE 16 /* these type values should be so high that */ #define LOCK_REC 32 /* they can be ORed to the lock mode */ -#define LOCK_TABLE_EXP 80 /* explicit table lock */ +#define LOCK_TABLE_EXP 80 /* explicit table lock (80 = 16 + 64) */ #define LOCK_TYPE_MASK 0xF0UL /* mask used to extract lock type from the type_mode field in a lock */ /* Waiting lock flag */ diff --git a/innobase/include/row0mysql.h b/innobase/include/row0mysql.h index e088071a1c4..0ab70db2dea 100644 --- a/innobase/include/row0mysql.h +++ b/innobase/include/row0mysql.h @@ -153,11 +153,12 @@ row_lock_table_autoinc_for_mysql( row_prebuilt_t* prebuilt); /* in: prebuilt struct in the MySQL table handle */ /************************************************************************* -Unlocks a table lock possibly reserved by trx. */ +Unlocks all table locks explicitly requested by trx (with LOCK TABLES, +lock type LOCK_TABLE_EXP). */ void -row_unlock_table_for_mysql( -/*=======================*/ +row_unlock_tables_for_mysql( +/*========================*/ trx_t* trx); /* in: transaction */ /************************************************************************* Sets a table lock on the table mentioned in prebuilt. */ diff --git a/innobase/include/trx0trx.h b/innobase/include/trx0trx.h index 07d5e5a8215..3be16e8f46d 100644 --- a/innobase/include/trx0trx.h +++ b/innobase/include/trx0trx.h @@ -423,8 +423,9 @@ struct trx_struct{ lock_t* auto_inc_lock; /* possible auto-inc lock reserved by the transaction; note that it is also in the lock list trx_locks */ - ulint n_tables_locked;/* number of table locks reserved by - the transaction, stored in trx_locks */ + ulint n_lock_table_exp;/* number of explicit table locks + (LOCK TABLES) reserved by the + transaction, stored in trx_locks */ UT_LIST_NODE_T(trx_t) trx_list; /* list of transactions */ UT_LIST_NODE_T(trx_t) |