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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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16
src/backend/utils/cache/relcache.c vendored
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@ -7,7 +7,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/utils/cache/relcache.c,v 1.43 1998/07/26 04:30:57 scrappy Exp $
* $Header: /cvsroot/pgsql/src/backend/utils/cache/relcache.c,v 1.44 1998/07/27 19:38:23 vadim Exp $
*
*-------------------------------------------------------------------------
*/
@ -53,11 +53,7 @@
#include "catalog/indexing.h"
#include "catalog/pg_aggregate.h"
#include "catalog/pg_attrdef.h"
#ifdef MULTIBYTE
#include "catalog/pg_attribute_mb.h"
#else
#include "catalog/pg_attribute.h"
#endif
#include "catalog/pg_index.h"
#include "catalog/pg_proc.h"
#include "catalog/pg_class.h"
@ -376,7 +372,7 @@ scan_pg_rel_seq(RelationBuildDescInfo buildinfo)
if (!IsInitProcessingMode())
RelationSetLockForRead(pg_class_desc);
pg_class_scan =
heap_beginscan(pg_class_desc, 0, false, 1, &key);
heap_beginscan(pg_class_desc, 0, SnapshotNow, 1, &key);
pg_class_tuple = heap_getnext(pg_class_scan, 0, &buf);
/* ----------------
@ -546,7 +542,7 @@ build_tupdesc_seq(RelationBuildDescInfo buildinfo,
*/
pg_attribute_desc = heap_openr(AttributeRelationName);
pg_attribute_scan =
heap_beginscan(pg_attribute_desc, 0, false, 1, &key);
heap_beginscan(pg_attribute_desc, 0, SnapshotNow, 1, &key);
/* ----------------
* add attribute data to relation->rd_att
@ -717,7 +713,7 @@ RelationBuildRuleLock(Relation relation)
*/
pg_rewrite_desc = heap_openr(RewriteRelationName);
pg_rewrite_scan =
heap_beginscan(pg_rewrite_desc, 0, false, 1, &key);
heap_beginscan(pg_rewrite_desc, 0, SnapshotNow, 1, &key);
pg_rewrite_tupdesc =
RelationGetTupleDescriptor(pg_rewrite_desc);
@ -1705,7 +1701,7 @@ AttrDefaultFetch(Relation relation)
break;
iptr = &indexRes->heap_iptr;
tuple = heap_fetch(adrel, false, iptr, &buffer);
tuple = heap_fetch(adrel, SnapshotNow, iptr, &buffer);
pfree(indexRes);
if (!HeapTupleIsValid(tuple))
continue;
@ -1793,7 +1789,7 @@ RelCheckFetch(Relation relation)
break;
iptr = &indexRes->heap_iptr;
tuple = heap_fetch(rcrel, false, iptr, &buffer);
tuple = heap_fetch(rcrel, SnapshotNow, iptr, &buffer);
pfree(indexRes);
if (!HeapTupleIsValid(tuple))
continue;