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Now that we've rearranged relation open to get a lock before touching

the rel, it's easy to get rid of the narrow race-condition window that
used to exist in VACUUM and CLUSTER.  Did some minor code-beautification
work in the same area, too.
This commit is contained in:
Tom Lane
2006-08-18 16:09:13 +00:00
parent e91600d1c2
commit 7aa772f03e
8 changed files with 153 additions and 91 deletions

View File

@@ -7,7 +7,7 @@
* Portions Copyright (c) 1996-2006, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* $PostgreSQL: pgsql/src/include/access/heapam.h,v 1.114 2006/07/03 22:45:39 tgl Exp $
* $PostgreSQL: pgsql/src/include/access/heapam.h,v 1.115 2006/08/18 16:09:10 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@@ -129,7 +129,8 @@ typedef enum
} LockTupleMode;
extern Relation relation_open(Oid relationId, LOCKMODE lockmode);
extern Relation conditional_relation_open(Oid relationId, LOCKMODE lockmode, bool nowait);
extern Relation try_relation_open(Oid relationId, LOCKMODE lockmode);
extern Relation relation_open_nowait(Oid relationId, LOCKMODE lockmode);
extern Relation relation_openrv(const RangeVar *relation, LOCKMODE lockmode);
extern void relation_close(Relation relation, LOCKMODE lockmode);