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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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2
src/backend/access/gist/gist.c
View File

@@ -170,7 +170,7 @@ gistbuild(Relation heap,
econtext = NULL;
}
#endif /* OMIT_PARTIAL_INDEX */
scan = heap_beginscan(heap, 0, false, 0, (ScanKey) NULL);
scan = heap_beginscan(heap, 0, SnapshotNow, 0, (ScanKey) NULL);
htup = heap_getnext(scan, 0, &buffer);
/* int the tuples as we insert them */

4
src/backend/access/hash/hash.c
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@@ -7,7 +7,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/access/hash/hash.c,v 1.18 1998/02/26 04:29:28 momjian Exp $
* $Header: /cvsroot/pgsql/src/backend/access/hash/hash.c,v 1.19 1998/07/27 19:37:35 vadim Exp $
*
* NOTES
* This file contains only the public interface routines.
@@ -121,7 +121,7 @@ hashbuild(Relation heap,
#endif /* OMIT_PARTIAL_INDEX */
/* start a heap scan */
hscan = heap_beginscan(heap, 0, false, 0, (ScanKey) NULL);
hscan = heap_beginscan(heap, 0, SnapshotNow, 0, (ScanKey) NULL);
htup = heap_getnext(hscan, 0, &buffer);
/* build the index */

28
src/backend/access/heap/heapam.c
View File

@@ -7,7 +7,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/access/heap/heapam.c,v 1.30 1998/07/20 16:56:53 momjian Exp $
* $Header: /cvsroot/pgsql/src/backend/access/heap/heapam.c,v 1.31 1998/07/27 19:37:36 vadim Exp $
*
*
* INTERFACE ROUTINES
@@ -209,7 +209,7 @@ heapgettup(Relation relation,
ItemPointer tid,
int dir,
Buffer *b,
bool seeself,
Snapshot snapshot,
int nkeys,
ScanKey key)
{
@@ -250,9 +250,9 @@ heapgettup(Relation relation,
}
elog(DEBUG, "heapgettup(..., b=0x%x, nkeys=%d, key=0x%x", b, nkeys, key);
elog(DEBUG, "heapgettup: relation(%c)=`%s', %s",
elog(DEBUG, "heapgettup: relation(%c)=`%s', %p",
relation->rd_rel->relkind, &relation->rd_rel->relname,
(seeself == true) ? "SeeSelf" : "NoSeeSelf");
snapshot);
#endif /* !defined(HEAPDEBUGALL) */
if (!ItemPointerIsValid(tid))
@@ -402,7 +402,7 @@ heapgettup(Relation relation,
* ----------------
*/
HeapTupleSatisfies(lpp, relation, *b, (PageHeader) dp,
seeself, nkeys, key, rtup);
snapshot, nkeys, key, rtup);
if (rtup != NULL)
{
ItemPointer iptr = &(rtup->t_ctid);
@@ -580,7 +580,7 @@ heap_close(Relation relation)
HeapScanDesc
heap_beginscan(Relation relation,
int atend,
bool seeself,
Snapshot snapshot,
unsigned nkeys,
ScanKey key)
{
@@ -608,7 +608,7 @@ heap_beginscan(Relation relation,
/* XXX someday assert SelfTimeQual if relkind == RELKIND_UNCATALOGED */
if (relation->rd_rel->relkind == RELKIND_UNCATALOGED)
seeself = true;
snapshot = SnapshotSelf;
/* ----------------
* increment relation ref count while scanning relation
@@ -639,7 +639,7 @@ heap_beginscan(Relation relation,
initsdesc(sdesc, relation, atend, nkeys, key);
sdesc->rs_atend = atend;
sdesc->rs_seeself = seeself;
sdesc->rs_snapshot = snapshot;
sdesc->rs_nkeys = (short) nkeys;
return (sdesc);
@@ -856,7 +856,7 @@ heap_getnext(HeapScanDesc scandesc,
iptr,
-1,
&(sdesc->rs_cbuf),
sdesc->rs_seeself,
sdesc->rs_snapshot,
sdesc->rs_nkeys,
sdesc->rs_key);
}
@@ -943,7 +943,7 @@ heap_getnext(HeapScanDesc scandesc,
iptr,
1,
&sdesc->rs_cbuf,
sdesc->rs_seeself,
sdesc->rs_snapshot,
sdesc->rs_nkeys,
sdesc->rs_key);
}
@@ -988,7 +988,7 @@ heap_getnext(HeapScanDesc scandesc,
*/
HeapTuple
heap_fetch(Relation relation,
bool seeself,
Snapshot snapshot,
ItemPointer tid,
Buffer *b)
{
@@ -1050,7 +1050,7 @@ heap_fetch(Relation relation,
*/
HeapTupleSatisfies(lp, relation, buffer, dp,
seeself, 0, (ScanKey) NULL, tuple);
snapshot, 0, (ScanKey) NULL, tuple);
if (tuple == NULL)
{
@@ -1447,7 +1447,7 @@ heap_markpos(HeapScanDesc sdesc)
(ItemPointer) NULL : &sdesc->rs_ctup->t_ctid,
-1,
&sdesc->rs_pbuf,
sdesc->rs_seeself,
sdesc->rs_snapshot,
sdesc->rs_nkeys,
sdesc->rs_key);
@@ -1461,7 +1461,7 @@ heap_markpos(HeapScanDesc sdesc)
(ItemPointer) NULL : &sdesc->rs_ctup->t_ctid,
1,
&sdesc->rs_nbuf,
sdesc->rs_seeself,
sdesc->rs_snapshot,
sdesc->rs_nkeys,
sdesc->rs_key);
}

10
src/backend/access/index/istrat.c
View File

@@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/access/index/Attic/istrat.c,v 1.20 1998/06/15 19:27:54 momjian Exp $
* $Header: /cvsroot/pgsql/src/backend/access/index/Attic/istrat.c,v 1.21 1998/07/27 19:37:37 vadim Exp $
*
*-------------------------------------------------------------------------
*/
@@ -501,7 +501,7 @@ OperatorRelationFillScanKeyEntry(Relation operatorRelation,
F_OIDEQ,
ObjectIdGetDatum(operatorObjectId));
scan = heap_beginscan(operatorRelation, false, false,
scan = heap_beginscan(operatorRelation, false, SnapshotNow,
1, &scanKeyData);
tuple = heap_getnext(scan, false, (Buffer *) NULL);
@@ -558,7 +558,7 @@ IndexSupportInitialize(IndexStrategy indexStrategy,
ObjectIdGetDatum(indexObjectId));
relation = heap_openr(IndexRelationName);
scan = heap_beginscan(relation, false, false, 1, entry);
scan = heap_beginscan(relation, false, SnapshotNow, 1, entry);
tuple = heap_getnext(scan, 0, (Buffer *) NULL);
if (!HeapTupleIsValid(tuple))
elog(ERROR, "IndexSupportInitialize: corrupted catalogs");
@@ -618,7 +618,7 @@ IndexSupportInitialize(IndexStrategy indexStrategy,
entry[1].sk_argument =
ObjectIdGetDatum(operatorClassObjectId[attributeNumber - 1]);
scan = heap_beginscan(relation, false, false, 2, entry);
scan = heap_beginscan(relation, false, SnapshotNow, 2, entry);
while (tuple = heap_getnext(scan, 0, (Buffer *) NULL),
HeapTupleIsValid(tuple))
@@ -661,7 +661,7 @@ IndexSupportInitialize(IndexStrategy indexStrategy,
for (strategy = 1; strategy <= maxStrategyNumber; strategy++)
ScanKeyEntrySetIllegal(StrategyMapGetScanKeyEntry(map, strategy));
scan = heap_beginscan(relation, false, false, 2, entry);
scan = heap_beginscan(relation, false, SnapshotNow, 2, entry);
while (tuple = heap_getnext(scan, 0, (Buffer *) NULL),
HeapTupleIsValid(tuple))

4
src/backend/access/nbtree/nbtinsert.c
View File

@@ -7,7 +7,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/access/nbtree/nbtinsert.c,v 1.26 1998/06/15 19:27:55 momjian Exp $
* $Header: /cvsroot/pgsql/src/backend/access/nbtree/nbtinsert.c,v 1.27 1998/07/27 19:37:39 vadim Exp $
*
*-------------------------------------------------------------------------
*/
@@ -120,7 +120,7 @@ _bt_doinsert(Relation rel, BTItem btitem, bool index_is_unique, Relation heapRel
{ /* they're equal */
btitem = (BTItem) PageGetItem(page, PageGetItemId(page, offset));
itup = &(btitem->bti_itup);
htup = heap_fetch(heapRel, true, &(itup->t_tid), NULL);
htup = heap_fetch(heapRel, SnapshotSelf, &(itup->t_tid), NULL);
if (htup != (HeapTuple) NULL)
{ /* it is a duplicate */
elog(ERROR, "Cannot insert a duplicate key into a unique index");

4
src/backend/access/nbtree/nbtree.c
View File

@@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/access/nbtree/nbtree.c,v 1.26 1998/06/15 19:27:56 momjian Exp $
* $Header: /cvsroot/pgsql/src/backend/access/nbtree/nbtree.c,v 1.27 1998/07/27 19:37:40 vadim Exp $
*
* NOTES
* This file contains only the public interface routines.
@@ -153,7 +153,7 @@ btbuild(Relation heap,
#endif /* OMIT_PARTIAL_INDEX */
/* start a heap scan */
hscan = heap_beginscan(heap, 0, false, 0, (ScanKey) NULL);
hscan = heap_beginscan(heap, 0, SnapshotNow, 0, (ScanKey) NULL);
htup = heap_getnext(hscan, 0, &buffer);
/* build the index */

4
src/backend/access/rtree/rtree.c
View File

@@ -7,7 +7,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/access/rtree/Attic/rtree.c,v 1.24 1998/06/15 19:28:01 momjian Exp $
* $Header: /cvsroot/pgsql/src/backend/access/rtree/Attic/rtree.c,v 1.25 1998/07/27 19:37:41 vadim Exp $
*
*-------------------------------------------------------------------------
*/
@@ -164,7 +164,7 @@ rtbuild(Relation heap,
slot = NULL;
}
#endif /* OMIT_PARTIAL_INDEX */
scan = heap_beginscan(heap, 0, false, 0, (ScanKey) NULL);
scan = heap_beginscan(heap, 0, SnapshotNow, 0, (ScanKey) NULL);
htup = heap_getnext(scan, 0, &buffer);
/* count the tuples as we insert them */