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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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20
src/backend/commands/vacuum.c
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@@ -7,7 +7,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/commands/vacuum.c,v 1.68 1998/07/26 04:30:25 scrappy Exp $
* $Header: /cvsroot/pgsql/src/backend/commands/vacuum.c,v 1.69 1998/07/27 19:37:53 vadim Exp $
*
*-------------------------------------------------------------------------
*/
@@ -27,11 +27,7 @@
#include "catalog/catalog.h"
#include "catalog/catname.h"
#include "catalog/index.h"
#ifdef MULTIBYTE
#include "catalog/pg_class_mb.h"
#else
#include "catalog/pg_class.h"
#endif
#include "catalog/pg_index.h"
#include "catalog/pg_operator.h"
#include "catalog/pg_statistic.h"
@@ -297,7 +293,7 @@ vc_getrels(NameData *VacRelP)
pgclass = heap_openr(RelationRelationName);
pgcdesc = RelationGetTupleDescriptor(pgclass);
pgcscan = heap_beginscan(pgclass, false, false, 1, &pgckey);
pgcscan = heap_beginscan(pgclass, false, SnapshotNow, 1, &pgckey);
while (HeapTupleIsValid(pgctup = heap_getnext(pgcscan, 0, &buf)))
{
@@ -404,7 +400,7 @@ vc_vacone(Oid relid, bool analyze, List *va_cols)
pgclass = heap_openr(RelationRelationName);
pgcdesc = RelationGetTupleDescriptor(pgclass);
pgcscan = heap_beginscan(pgclass, false, false, 1, &pgckey);
pgcscan = heap_beginscan(pgclass, false, SnapshotNow, 1, &pgckey);
/*
* Race condition -- if the pg_class tuple has gone away since the
@@ -1776,7 +1772,7 @@ vc_updstats(Oid relid, int npages, int ntups, bool hasindex, VRelStats *vacrelst
ObjectIdGetDatum(relid));
rd = heap_openr(RelationRelationName);
rsdesc = heap_beginscan(rd, false, false, 1, &rskey);
rsdesc = heap_beginscan(rd, false, SnapshotNow, 1, &rskey);
if (!HeapTupleIsValid(rtup = heap_getnext(rsdesc, 0, &rbuf)))
elog(ERROR, "pg_class entry for relid %d vanished during vacuuming",
@@ -1799,7 +1795,7 @@ vc_updstats(Oid relid, int npages, int ntups, bool hasindex, VRelStats *vacrelst
ScanKeyEntryInitialize(&askey, 0, Anum_pg_attribute_attrelid,
F_INT4EQ, relid);
asdesc = heap_beginscan(ad, false, false, 1, &askey);
asdesc = heap_beginscan(ad, false, SnapshotNow, 1, &askey);
while (HeapTupleIsValid(atup = heap_getnext(asdesc, 0, &abuf)))
{
@@ -1946,10 +1942,10 @@ vc_delhilowstats(Oid relid, int attcnt, int *attnums)
ScanKeyEntryInitialize(&pgskey, 0x0, Anum_pg_statistic_starelid,
F_OIDEQ,
ObjectIdGetDatum(relid));
pgsscan = heap_beginscan(pgstatistic, false, false, 1, &pgskey);
pgsscan = heap_beginscan(pgstatistic, false, SnapshotNow, 1, &pgskey);
}
else
pgsscan = heap_beginscan(pgstatistic, false, false, 0, NULL);
pgsscan = heap_beginscan(pgstatistic, false, SnapshotNow, 0, NULL);
while (HeapTupleIsValid(pgstup = heap_getnext(pgsscan, 0, NULL)))
{
@@ -2158,7 +2154,7 @@ vc_getindices(Oid relid, int *nindices, Relation **Irel)
F_OIDEQ,
ObjectIdGetDatum(relid));
pgiscan = heap_beginscan(pgindex, false, false, 1, &pgikey);
pgiscan = heap_beginscan(pgindex, false, SnapshotNow, 1, &pgikey);
while (HeapTupleIsValid(pgitup = heap_getnext(pgiscan, 0, NULL)))
{