diff options
Diffstat (limited to 'innobase/include/trx0trx.h')
| -rw-r--r-- | innobase/include/trx0trx.h | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/innobase/include/trx0trx.h b/innobase/include/trx0trx.h index 58cef01b376..26c9ace08b6 100644 --- a/innobase/include/trx0trx.h +++ b/innobase/include/trx0trx.h @@ -50,6 +50,13 @@ trx_allocate_for_mysql(void); /*========================*/ /* out, own: transaction object */ /************************************************************************ +Creates a transaction object for background operations by the master thread. */ + +trx_t* +trx_allocate_for_background(void); +/*=============================*/ + /* out, own: transaction object */ +/************************************************************************ Frees a transaction object. */ void @@ -63,6 +70,13 @@ void trx_free_for_mysql( /*===============*/ trx_t* trx); /* in, own: trx object */ +/************************************************************************ +Frees a transaction object of a background operation of the master thread. */ + +void +trx_free_for_background( +/*====================*/ + trx_t* trx); /* in, own: trx object */ /******************************************************************** Creates trx objects for transactions and initializes the trx list of trx_sys at database start. Rollback segment and undo log lists must @@ -266,11 +280,14 @@ struct trx_sig_struct{ transaction is waiting a reply */ }; +#define TRX_MAGIC_N 91118598 + /* The transaction handle; every session has a trx object which is freed only when the session is freed; in addition there may be session-less transactions rolling back after a database recovery */ struct trx_struct{ + ulint magic_n; /* All the next fields are protected by the kernel mutex, except the undo logs which are protected by undo_mutex */ char* op_info; /* English text describing the @@ -290,10 +307,20 @@ struct trx_struct{ table */ dulint table_id; /* table id if the preceding field is TRUE */ + /*------------------------------*/ void* mysql_thd; /* MySQL thread handle corresponding to this trx, or NULL */ + char* mysql_log_file_name; + /* If MySQL binlog is used, this field + contains a pointer to the latest file + name; this is NULL if binlog is not + used */ + ib_longlong mysql_log_offset;/* If MySQL binlog is used, this field + contains the end offset of the binlog + entry */ os_thread_id_t mysql_thread_id;/* id of the MySQL thread associated with this transaction object */ + /*------------------------------*/ ulint n_mysql_tables_in_use; /* number of Innobase tables used in the processing of the current SQL statement in MySQL */ @@ -314,6 +341,18 @@ struct trx_struct{ calls from MySQL; this is intended to reduce contention on the search latch */ + /*------------------------------*/ + ibool declared_to_be_inside_innodb; + /* this is TRUE if we have declared + this transaction in + srv_conc_enter_innodb to be inside the + InnoDB engine */ + ulint n_tickets_to_enter_innodb; + /* this can be > 0 only when + declared_to_... is TRUE; when we come + to srv_conc_innodb_enter, if the value + here is > 0, we decrement this by 1 */ + /*------------------------------*/ lock_t* auto_inc_lock; /* possible auto-inc lock reserved by the transaction; note that it is also in the lock list trx_locks */ |