diff options
Diffstat (limited to 'sql/sql_db.cc')
| -rw-r--r-- | sql/sql_db.cc | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/sql/sql_db.cc b/sql/sql_db.cc index b4a0e5c4c7d..1dd659283ac 100644 --- a/sql/sql_db.cc +++ b/sql/sql_db.cc @@ -642,6 +642,18 @@ int mysql_create_db(THD *thd, char *db, HA_CREATE_INFO *create_info, goto exit2; } + /* + Close and mark for re-open all HANDLER tables which are marked for flush + or which there are pending conflicing locks against. This is needed to + prevent deadlocks. + */ + if (thd->handler_tables_hash.records) + { + pthread_mutex_lock(&LOCK_open); + mysql_ha_flush(thd); + pthread_mutex_unlock(&LOCK_open); + } + VOID(pthread_mutex_lock(&LOCK_mysql_create_db)); /* Check directory */ @@ -788,6 +800,18 @@ bool mysql_alter_db(THD *thd, const char *db, HA_CREATE_INFO *create_info) if ((error=wait_if_global_read_lock(thd,0,1))) goto exit2; + /* + Close and mark for re-open all HANDLER tables which are marked for flush + or which there are pending conflicing locks against. This is needed to + prevent deadlocks. + */ + if (thd->handler_tables_hash.records) + { + pthread_mutex_lock(&LOCK_open); + mysql_ha_flush(thd); + pthread_mutex_unlock(&LOCK_open); + } + VOID(pthread_mutex_lock(&LOCK_mysql_create_db)); /* @@ -886,6 +910,18 @@ bool mysql_rm_db(THD *thd,char *db,bool if_exists, bool silent) goto exit2; } + /* + Close and mark for re-open all HANDLER tables which are marked for flush + or which there are pending conflicing locks against. This is needed to + prevent deadlocks. + */ + if (thd->handler_tables_hash.records) + { + pthread_mutex_lock(&LOCK_open); + mysql_ha_flush(thd); + pthread_mutex_unlock(&LOCK_open); + } + VOID(pthread_mutex_lock(&LOCK_mysql_create_db)); length= build_table_filename(path, sizeof(path) - 1, db, "", "", 0); |