diff options
Diffstat (limited to 'sql/sql_class.h')
| -rw-r--r-- | sql/sql_class.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/sql/sql_class.h b/sql/sql_class.h index beb2de9c0a9..3ffff6f1871 100644 --- a/sql/sql_class.h +++ b/sql/sql_class.h @@ -505,6 +505,11 @@ public: // TODO: document the variables below MYSQL_LOCK *lock; /* Current locks */ MYSQL_LOCK *locked_tables; /* Tables locked with LOCK */ + /* + One thread can hold up to one named user-level lock. This variable + points to a lock object if the lock is present. See item_func.cc and + chapter 'Miscellaneous functions', for functions GET_LOCK, RELEASE_LOCK. + */ ULL *ull; PREP_STMT *last_prepared_stmt; #ifndef DBUG_OFF |