diff options
Diffstat (limited to 'innobase/include/trx0trx.h')
| -rw-r--r-- | innobase/include/trx0trx.h | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/innobase/include/trx0trx.h b/innobase/include/trx0trx.h index d67628b8bad..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 |