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| author | Vadim B. Mikheev <vadim4o@yahoo.com> | 1997-08-06 02:08:39 +0000 |
|---|---|---|
| committer | Vadim B. Mikheev <vadim4o@yahoo.com> | 1997-08-06 02:08:39 +0000 |
| commit | b3d8beaa1ad8f0e472f8df0fac85710a3301c5a1 (patch) | |
| tree | 0025b2b6cd58b3cfb284b871e88fcbb17dbd38f8 | |
| parent | 6ed1715b1f5d273f6f2a0facc4ad7f5485c433e0 (diff) | |
| download | postgresql-b3d8beaa1ad8f0e472f8df0fac85710a3301c5a1.tar.gz postgresql-b3d8beaa1ad8f0e472f8df0fac85710a3301c5a1.zip | |
Catch non-functional delete attempts.
| -rw-r--r-- | src/backend/access/heap/heapam.c | 15 |
1 files changed, 14 insertions, 1 deletions
diff --git a/src/backend/access/heap/heapam.c b/src/backend/access/heap/heapam.c index 67806925b17..63157734cd7 100644 --- a/src/backend/access/heap/heapam.c +++ b/src/backend/access/heap/heapam.c @@ -7,7 +7,7 @@ * * * IDENTIFICATION - * $Header: /cvsroot/pgsql/src/backend/access/heap/heapam.c,v 1.11 1997/03/28 07:04:11 scrappy Exp $ + * $Header: /cvsroot/pgsql/src/backend/access/heap/heapam.c,v 1.12 1997/08/06 02:08:39 vadim Exp $ * * * INTERFACE ROUTINES @@ -1150,6 +1150,19 @@ heap_delete(Relation relation, ItemPointer tid) dp = (PageHeader) BufferGetPage(b); lp = PageGetItemId(dp, ItemPointerGetOffsetNumber(tid)); + /* + * Just like test against non-functional updates we try to catch + * non-functional delete attempts. - vadim 05/05/97 + */ + tp = (HeapTuple) PageGetItem((Page)dp, lp); + Assert(HeapTupleIsValid(tp)); + if (TupleUpdatedByCurXactAndCmd(tp)) { + elog(NOTICE, "Non-functional delete, tuple already deleted"); + if ( IsSystemRelationName(RelationGetRelationName(relation)->data) ) + RelationUnsetLockForWrite(relation); + ReleaseBuffer(b); + return; + } /* ---------------- * check that we're deleteing a valid item * ---------------- |