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Use Snapshot in heap access methods.

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This commit is contained in:
Vadim B. Mikheev
1998-07-27 19:38:40 +00:00
parent f7f989c990
commit be8300b18f
54 changed files with 352 additions and 339 deletions
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10
src/backend/commands/async.c
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@@ -7,7 +7,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/commands/async.c,v 1.35 1998/07/09 03:28:44 scrappy Exp $
* $Header: /cvsroot/pgsql/src/backend/commands/async.c,v 1.36 1998/07/27 19:37:50 vadim Exp $
*
*-------------------------------------------------------------------------
*/
@@ -203,7 +203,7 @@ Async_Notify(char *relname)
lRel = heap_openr(ListenerRelationName);
tdesc = RelationGetTupleDescriptor(lRel);
RelationSetLockForWrite(lRel);
sRel = heap_beginscan(lRel, 0, false, 1, &key);
sRel = heap_beginscan(lRel, 0, SnapshotNow, 1, &key);
nulls[0] = nulls[1] = nulls[2] = ' ';
repl[0] = repl[1] = repl[2] = ' ';
@@ -283,7 +283,7 @@ Async_NotifyAtCommit()
Int32GetDatum(1));
lRel = heap_openr(ListenerRelationName);
RelationSetLockForWrite(lRel);
sRel = heap_beginscan(lRel, 0, false, 1, &key);
sRel = heap_beginscan(lRel, 0, SnapshotNow, 1, &key);
tdesc = RelationGetTupleDescriptor(lRel);
while (HeapTupleIsValid(lTuple = heap_getnext(sRel, 0, &b)))
@@ -431,7 +431,7 @@ Async_Listen(char *relname, int pid)
/* is someone already listening. One listener per relation */
tdesc = RelationGetTupleDescriptor(lDesc);
s = heap_beginscan(lDesc, 0, false, 0, (ScanKey) NULL);
s = heap_beginscan(lDesc, 0, SnapshotNow, 0, (ScanKey) NULL);
while (HeapTupleIsValid(htup = heap_getnext(s, 0, &b)))
{
d = heap_getattr(htup, Anum_pg_listener_relname, tdesc,
@@ -577,7 +577,7 @@ Async_NotifyFrontEnd()
lRel = heap_openr(ListenerRelationName);
RelationSetLockForWrite(lRel);
tdesc = RelationGetTupleDescriptor(lRel);
sRel = heap_beginscan(lRel, 0, false, 2, key);
sRel = heap_beginscan(lRel, 0, SnapshotNow, 2, key);
nulls[0] = nulls[1] = nulls[2] = ' ';
repl[0] = repl[1] = repl[2] = ' ';