Many files:

  Merge InnoDB-4.0.5b: minor improvements to foreign keys, more logical data dictionary lock


sql/ha_innodb.cc:
  Merge InnoDB-4.0.5b: minor improvements to foreign keys, more logical data dictionary lock
innobase/dict/dict0crea.c:
  Merge InnoDB-4.0.5b: minor improvements to foreign keys, more logical data dictionary lock
innobase/dict/dict0dict.c:
  Merge InnoDB-4.0.5b: minor improvements to foreign keys, more logical data dictionary lock
innobase/include/log0recv.h:
  Merge InnoDB-4.0.5b: minor improvements to foreign keys, more logical data dictionary lock
innobase/include/row0mysql.h:
  Merge InnoDB-4.0.5b: minor improvements to foreign keys, more logical data dictionary lock
innobase/include/srv0srv.h:
  Merge InnoDB-4.0.5b: minor improvements to foreign keys, more logical data dictionary lock
innobase/include/trx0trx.h:
  Merge InnoDB-4.0.5b: minor improvements to foreign keys, more logical data dictionary lock
innobase/log/log0recv.c:
  Merge InnoDB-4.0.5b: minor improvements to foreign keys, more logical data dictionary lock
innobase/os/os0sync.c:
  Merge InnoDB-4.0.5b: minor improvements to foreign keys, more logical data dictionary lock
innobase/os/os0thread.c:
  Merge InnoDB-4.0.5b: minor improvements to foreign keys, more logical data dictionary lock
innobase/row/row0ins.c:
  Merge InnoDB-4.0.5b: minor improvements to foreign keys, more logical data dictionary lock
innobase/row/row0mysql.c:
  Merge InnoDB-4.0.5b: minor improvements to foreign keys, more logical data dictionary lock
innobase/row/row0purge.c:
  Merge InnoDB-4.0.5b: minor improvements to foreign keys, more logical data dictionary lock
innobase/row/row0undo.c:
  Merge InnoDB-4.0.5b: minor improvements to foreign keys, more logical data dictionary lock
innobase/row/row0upd.c:
  Merge InnoDB-4.0.5b: minor improvements to foreign keys, more logical data dictionary lock
innobase/srv/srv0srv.c:
  Merge InnoDB-4.0.5b: minor improvements to foreign keys, more logical data dictionary lock
innobase/srv/srv0start.c:
  Merge InnoDB-4.0.5b: minor improvements to foreign keys, more logical data dictionary lock
innobase/trx/trx0roll.c:
  Merge InnoDB-4.0.5b: minor improvements to foreign keys, more logical data dictionary lock
innobase/trx/trx0trx.c:
  Merge InnoDB-4.0.5b: minor improvements to foreign keys, more logical data dictionary lock

1 files changed, 27 insertions, 12 deletions

diff --git a/innobase/include/row0mysql.h b/innobase/include/row0mysql.h
index 8152c534f48..c72c905edf5 100644
--- a/innobase/include/row0mysql.h
+++ b/innobase/include/row0mysql.h
@@ -230,18 +230,35 @@ row_update_cascade_for_mysql(
 				or set null operation */
 	dict_table_t*	table);	/* in: table where we do the operation */
 /*************************************************************************
-Locks the data dictionary exclusively for performing a table create
-operation. */
+Locks the data dictionary exclusively for performing a table create or other
+data dictionary modification operation. */
 
 void
-row_mysql_lock_data_dictionary(void);
-/*================================*/
+row_mysql_lock_data_dictionary(
+/*===========================*/
+	trx_t*	trx);	/* in: transaction */
 /*************************************************************************
-Unlocks the data dictionary exclusively lock. */
+Unlocks the data dictionary exclusive lock. */
 
 void
-row_mysql_unlock_data_dictionary(void);
-/*==================================*/
+row_mysql_unlock_data_dictionary(
+/*=============================*/
+	trx_t*	trx);	/* in: transaction */
+/*************************************************************************
+Locks the data dictionary in shared mode from modifications, for performing
+foreign key check, rollback, or other operation invisible to MySQL. */
+
+void
+row_mysql_freeze_data_dictionary(
+/*=============================*/
+	trx_t*	trx);	/* in: transaction */
+/*************************************************************************
+Unlocks the data dictionary shared lock. */
+
+void
+row_mysql_unfreeze_data_dictionary(
+/*===============================*/
+	trx_t*	trx);	/* in: transaction */
 /*************************************************************************
 Does a table creation operation for MySQL. If the name of the created
 table ends to characters INNODB_MONITOR, then this also starts
@@ -310,11 +327,9 @@ output by the master thread. */
 int
 row_drop_table_for_mysql(
 /*=====================*/
-				/* out: error code or DB_SUCCESS */
-	char*	name,		/* in: table name */
-	trx_t*	trx,		/* in: transaction handle */
-	ibool	has_dict_mutex);/* in: TRUE if the caller already owns the
-				dictionary system mutex */
+			/* out: error code or DB_SUCCESS */
+	char*	name,	/* in: table name */
+	trx_t*	trx);	/* in: transaction handle */
 /*************************************************************************
 Drops a database for MySQL. */