diff options
Diffstat (limited to 'innobase/include/trx0trx.h')
| -rw-r--r-- | innobase/include/trx0trx.h | 63 |
1 files changed, 32 insertions, 31 deletions
diff --git a/innobase/include/trx0trx.h b/innobase/include/trx0trx.h index 874b126e47c..1468ef449e7 100644 --- a/innobase/include/trx0trx.h +++ b/innobase/include/trx0trx.h @@ -386,9 +386,10 @@ struct trx_struct{ /* how many tables the current SQL statement uses, except those in consistent read */ - ibool has_dict_operation_lock; - /* TRUE if the trx currently holds - an s-lock on dict_operation_lock */ + ibool dict_operation_lock_mode; + /* 0, RW_S_LATCH, or RW_X_LATCH: + the latch mode trx currently holds + on dict_operation_lock */ ibool has_search_latch; /* TRUE if this trx has latched the search system latch in S-mode */ @@ -427,34 +428,6 @@ struct trx_struct{ mysql_trx_list; /* list of transactions created for MySQL */ /*------------------------------*/ - mutex_t undo_mutex; /* mutex protecting the fields in this - section (down to undo_no_arr), EXCEPT - last_sql_stat_start, which can be - accessed only when we know that there - cannot be any activity in the undo - logs! */ - dulint undo_no; /* next undo log record number to - assign */ - trx_savept_t last_sql_stat_start; - /* undo_no when the last sql statement - was started: in case of an error, trx - is rolled back down to this undo - number; see note at undo_mutex! */ - trx_rseg_t* rseg; /* rollback segment assigned to the - transaction, or NULL if not assigned - yet */ - trx_undo_t* insert_undo; /* pointer to the insert undo log, or - NULL if no inserts performed yet */ - trx_undo_t* update_undo; /* pointer to the update undo log, or - NULL if no update performed yet */ - dulint roll_limit; /* least undo number to undo during - a rollback */ - ulint pages_undone; /* number of undo log pages undone - since the last undo log truncation */ - trx_undo_arr_t* undo_no_arr; /* array of undo numbers of undo log - records which are currently processed - by a rollback operation */ - /*------------------------------*/ ulint error_state; /* 0 if no error, otherwise error number */ void* error_info; /* if the error number indicates a @@ -508,6 +481,34 @@ struct trx_struct{ /*------------------------------*/ mem_heap_t* read_view_heap; /* memory heap for the read view */ read_view_t* read_view; /* consistent read view or NULL */ + /*------------------------------*/ + mutex_t undo_mutex; /* mutex protecting the fields in this + section (down to undo_no_arr), EXCEPT + last_sql_stat_start, which can be + accessed only when we know that there + cannot be any activity in the undo + logs! */ + dulint undo_no; /* next undo log record number to + assign */ + trx_savept_t last_sql_stat_start; + /* undo_no when the last sql statement + was started: in case of an error, trx + is rolled back down to this undo + number; see note at undo_mutex! */ + trx_rseg_t* rseg; /* rollback segment assigned to the + transaction, or NULL if not assigned + yet */ + trx_undo_t* insert_undo; /* pointer to the insert undo log, or + NULL if no inserts performed yet */ + trx_undo_t* update_undo; /* pointer to the update undo log, or + NULL if no update performed yet */ + dulint roll_limit; /* least undo number to undo during + a rollback */ + ulint pages_undone; /* number of undo log pages undone + since the last undo log truncation */ + trx_undo_arr_t* undo_no_arr; /* array of undo numbers of undo log + records which are currently processed + by a rollback operation */ }; #define TRX_MAX_N_THREADS 32 /* maximum number of concurrent |