diff options
Diffstat (limited to 'storage/innobase/include/row0mysql.h')
| -rw-r--r-- | storage/innobase/include/row0mysql.h | 18 |
1 files changed, 14 insertions, 4 deletions
diff --git a/storage/innobase/include/row0mysql.h b/storage/innobase/include/row0mysql.h index 4bb9fa63cd1..4e6ff73b0f8 100644 --- a/storage/innobase/include/row0mysql.h +++ b/storage/innobase/include/row0mysql.h @@ -243,17 +243,27 @@ row_update_for_mysql( the MySQL format */ row_prebuilt_t* prebuilt); /* in: prebuilt struct in MySQL handle */ - /************************************************************************* -Does an unlock of a row for MySQL. */ +This can only be used when srv_locks_unsafe_for_binlog is TRUE. Before +calling this function we must use trx_reset_new_rec_lock_info() and +trx_register_new_rec_lock() to store the information which new record locks +really were set. This function removes a newly set lock under prebuilt->pcur, +and also under prebuilt->clust_pcur. Currently, this is only used and tested +in the case of an UPDATE or a DELETE statement, where the row lock is of the +LOCK_X type. +Thus, this implements a 'mini-rollback' that releases the latest record +locks we set. */ int row_unlock_for_mysql( /*=================*/ /* out: error code or DB_SUCCESS */ - row_prebuilt_t* prebuilt); /* in: prebuilt struct in MySQL + row_prebuilt_t* prebuilt, /* in: prebuilt struct in MySQL handle */ - + ibool has_latches_on_recs);/* TRUE if called so that we have + the latches on the records under pcur + and clust_pcur, and we do not need to + reposition the cursors. */ /************************************************************************* Creates an query graph node of 'update' type to be used in the MySQL interface. */ |