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Restructure indexscan API (index_beginscan, index_getnext) per

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yesterday's proposal to pghackers.  Also remove unnecessary parameters
to heap_beginscan, heap_rescan.  I modified pg_proc.h to reflect the
new numbers of parameters for the AM interface routines, but did not
force an initdb because nothing actually looks at those fields.
This commit is contained in:
Tom Lane
2002-05-20 23:51:44 +00:00
parent c961474c96
commit 44fbe20d62
59 changed files with 834 additions and 1283 deletions
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22
src/backend/commands/async.c
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@ -7,7 +7,7 @@
* Portions Copyright (c) 1994, Regents of the University of California
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/commands/async.c,v 1.84 2002/05/05 00:03:28 tgl Exp $
* $Header: /cvsroot/pgsql/src/backend/commands/async.c,v 1.85 2002/05/20 23:51:42 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -204,8 +204,8 @@ Async_Listen(char *relname, int pid)
lRel = heap_openr(ListenerRelationName, AccessExclusiveLock);
/* Detect whether we are already listening on this relname */
scan = heap_beginscan(lRel, 0, SnapshotNow, 0, (ScanKey) NULL);
while (HeapTupleIsValid(tuple = heap_getnext(scan, 0)))
scan = heap_beginscan(lRel, SnapshotNow, 0, (ScanKey) NULL);
while ((tuple = heap_getnext(scan, ForwardScanDirection)) != NULL)
{
Form_pg_listener listener = (Form_pg_listener) GETSTRUCT(tuple);
@ -305,8 +305,8 @@ Async_Unlisten(char *relname, int pid)
lRel = heap_openr(ListenerRelationName, AccessExclusiveLock);
scan = heap_beginscan(lRel, 0, SnapshotNow, 0, (ScanKey) NULL);
while (HeapTupleIsValid(tuple = heap_getnext(scan, 0)))
scan = heap_beginscan(lRel, SnapshotNow, 0, (ScanKey) NULL);
while ((tuple = heap_getnext(scan, ForwardScanDirection)) != NULL)
{
Form_pg_listener listener = (Form_pg_listener) GETSTRUCT(tuple);
@ -369,9 +369,9 @@ Async_UnlistenAll(void)
Anum_pg_listener_pid,
F_INT4EQ,
Int32GetDatum(MyProcPid));
scan = heap_beginscan(lRel, 0, SnapshotNow, 1, key);
scan = heap_beginscan(lRel, SnapshotNow, 1, key);
while (HeapTupleIsValid(lTuple = heap_getnext(scan, 0)))
while ((lTuple = heap_getnext(scan, ForwardScanDirection)) != NULL)
simple_heap_delete(lRel, &lTuple->t_self);
heap_endscan(scan);
@ -472,9 +472,9 @@ AtCommit_Notify(void)
lRel = heap_openr(ListenerRelationName, AccessExclusiveLock);
tdesc = RelationGetDescr(lRel);
scan = heap_beginscan(lRel, 0, SnapshotNow, 0, (ScanKey) NULL);
scan = heap_beginscan(lRel, SnapshotNow, 0, (ScanKey) NULL);
while (HeapTupleIsValid(lTuple = heap_getnext(scan, 0)))
while ((lTuple = heap_getnext(scan, ForwardScanDirection)) != NULL)
{
Form_pg_listener listener = (Form_pg_listener) GETSTRUCT(lTuple);
char *relname = NameStr(listener->relname);
@ -773,7 +773,7 @@ ProcessIncomingNotify(void)
Anum_pg_listener_pid,
F_INT4EQ,
Int32GetDatum(MyProcPid));
scan = heap_beginscan(lRel, 0, SnapshotNow, 1, key);
scan = heap_beginscan(lRel, SnapshotNow, 1, key);
/* Prepare data for rewriting 0 into notification field */
nulls[0] = nulls[1] = nulls[2] = ' ';
@ -782,7 +782,7 @@ ProcessIncomingNotify(void)
value[0] = value[1] = value[2] = (Datum) 0;
value[Anum_pg_listener_notify - 1] = Int32GetDatum(0);
while (HeapTupleIsValid(lTuple = heap_getnext(scan, 0)))
while ((lTuple = heap_getnext(scan, ForwardScanDirection)) != NULL)
{
Form_pg_listener listener = (Form_pg_listener) GETSTRUCT(lTuple);
char *relname = NameStr(listener->relname);