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Add NOWAIT option to SELECT FOR UPDATE/SHARE.

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Original patch by Hans-Juergen Schoenig, revisions by Karel Zak
and Tom Lane.
This commit is contained in:
Tom Lane
2005-08-01 20:31:16 +00:00
parent ca7abcd89d
commit 2a4fad1a0e
28 changed files with 387 additions and 157 deletions
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5
src/include/access/heapam.h
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@@ -7,7 +7,7 @@
* Portions Copyright (c) 1996-2005, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* $PostgreSQL: pgsql/src/include/access/heapam.h,v 1.102 2005/06/20 18:37:01 tgl Exp $
* $PostgreSQL: pgsql/src/include/access/heapam.h,v 1.103 2005/08/01 20:31:13 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@@ -163,7 +163,8 @@ extern HTSU_Result heap_delete(Relation relation, ItemPointer tid, ItemPointer c
extern HTSU_Result heap_update(Relation relation, ItemPointer otid, HeapTuple tup,
ItemPointer ctid, CommandId cid, Snapshot crosscheck, bool wait);
extern HTSU_Result heap_lock_tuple(Relation relation, HeapTuple tup,
Buffer *userbuf, CommandId cid, LockTupleMode mode);
Buffer *userbuf, CommandId cid,
LockTupleMode mode, bool nowait);
extern Oid simple_heap_insert(Relation relation, HeapTuple tup);
extern void simple_heap_delete(Relation relation, ItemPointer tid);