Avoid transaction overhead when there are no temp tables

tglsfdc · tglsfdc · commit 15dd16785418 · 1999-09-04T21:45:48.000Z
to be deleted.
diff --git a/src/backend/utils/cache/temprel.c b/src/backend/utils/cache/temprel.c
@@ -7,7 +7,7 @@
  *
  *
  * IDENTIFICATION
- *	  $Header: /cvsroot/pgsql/src/backend/utils/cache/Attic/temprel.c,v 1.11 1999/09/04 19:55:50 momjian Exp $
+ *	  $Header: /cvsroot/pgsql/src/backend/utils/cache/Attic/temprel.c,v 1.12 1999/09/04 21:45:48 tgl Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -79,6 +79,9 @@ remove_all_temp_relations(void)
 	List	   *l,
 			   *next;
 
+	if (temp_rels == NIL)
+		return;
+
 	AbortOutOfAnyTransaction();
 	StartTransactionCommand();
 
@@ -102,6 +105,7 @@ remove_all_temp_relations(void)
 
 		l = next;
 	}
+	temp_rels = NIL;
 	CommitTransactionCommand();
 }
 

Original file line number	Diff line number	Diff line change
`@@ -7,7 +7,7 @@`
`7`	`7`	`*`
`8`	`8`	`*`
`9`	`9`	`* IDENTIFICATION`
`10`		`- * $Header: /cvsroot/pgsql/src/backend/utils/cache/Attic/temprel.c,v 1.11 1999/09/04 19:55:50 momjian Exp $`
	`10`	`+ * $Header: /cvsroot/pgsql/src/backend/utils/cache/Attic/temprel.c,v 1.12 1999/09/04 21:45:48 tgl Exp $`
`11`	`11`	`*`
`12`	`12`	`*-------------------------------------------------------------------------`
`13`	`13`	`*/`
`@@ -79,6 +79,9 @@ remove_all_temp_relations(void)`
`79`	`79`	`List *l,`
`80`	`80`	`*next;`
`81`	`81`
	`82`	`+ if (temp_rels == NIL)`
	`83`	`+ return;`
	`84`	`+`
`82`	`85`	`AbortOutOfAnyTransaction();`
`83`	`86`	`StartTransactionCommand();`
`84`	`87`
`@@ -102,6 +105,7 @@ remove_all_temp_relations(void)`
`102`	`105`
`103`	`106`	`l = next;`
`104`	`107`	`}`
	`108`	`+ temp_rels = NIL;`
`105`	`109`	`CommitTransactionCommand();`
`106`	`110`	`}`
`107`	`111`