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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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6
src/backend/utils/adt/not_in.c
View File

@@ -7,7 +7,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/utils/adt/Attic/not_in.c,v 1.9 1998/06/15 19:29:36 momjian Exp $
* $Header: /cvsroot/pgsql/src/backend/utils/adt/Attic/not_in.c,v 1.10 1998/07/27 19:38:18 vadim Exp $
*
*-------------------------------------------------------------------------
*/
@@ -72,8 +72,8 @@ int4notin(int16 not_in_arg, char *relation_and_attr)
/* the last argument should be a ScanKey, not an integer! - jolly */
/* it looks like the arguments are out of order, too */
/* but skeyData is never initialized! does this work?? - ay 2/95 */
scan_descriptor = heap_beginscan(relation_to_scan, false, false, 0,
&skeyData);
scan_descriptor = heap_beginscan(relation_to_scan, false, SnapshotNow,
0, &skeyData);
retval = true;

8
src/backend/utils/adt/regproc.c
View File

@@ -7,7 +7,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/utils/adt/regproc.c,v 1.20 1998/07/20 16:57:01 momjian Exp $
* $Header: /cvsroot/pgsql/src/backend/utils/adt/regproc.c,v 1.21 1998/07/27 19:38:19 vadim Exp $
*
*-------------------------------------------------------------------------
*/
@@ -55,7 +55,7 @@ regprocin(char *proname)
(RegProcedure) F_NAMEEQ,
(Datum) proname);
procscan = heap_beginscan(proc, 0, false, 1, &key);
procscan = heap_beginscan(proc, 0, SnapshotNow, 1, &key);
if (!HeapScanIsValid(procscan))
{
heap_close(proc);
@@ -111,7 +111,7 @@ regprocout(RegProcedure proid)
(RegProcedure) F_INT4EQ,
(Datum) proid);
procscan = heap_beginscan(proc, 0, false, 1, &key);
procscan = heap_beginscan(proc, 0, SnapshotNow, 1, &key);
if (!HeapScanIsValid(procscan))
{
heap_close(proc);
@@ -189,7 +189,7 @@ oid8types(Oid (*oidArray)[])
(RegProcedure) F_INT4EQ,
(Datum) *sp);
typescan = heap_beginscan(type, 0, false, 1, &key);
typescan = heap_beginscan(type, 0, SnapshotNow, 1, &key);
if (!HeapScanIsValid(typescan))
{
heap_close(type);

4
src/backend/utils/adt/selfuncs.c
View File

@@ -12,7 +12,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/utils/adt/selfuncs.c,v 1.19 1998/06/15 19:29:37 momjian Exp $
* $Header: /cvsroot/pgsql/src/backend/utils/adt/selfuncs.c,v 1.20 1998/07/27 19:38:20 vadim Exp $
*
*-------------------------------------------------------------------------
*/
@@ -349,7 +349,7 @@ gethilokey(Oid relid,
key[0].sk_argument = ObjectIdGetDatum(relid);
key[1].sk_argument = Int16GetDatum((int16) attnum);
key[2].sk_argument = ObjectIdGetDatum(opid);
sdesc = heap_beginscan(rdesc, 0, false, 3, key);
sdesc = heap_beginscan(rdesc, 0, SnapshotNow, 3, key);
tuple = heap_getnext(sdesc, 0, (Buffer *) NULL);
if (!HeapTupleIsValid(tuple))
{

4
src/backend/utils/adt/sets.c
View File

@@ -9,7 +9,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/utils/adt/Attic/sets.c,v 1.14 1998/07/20 16:57:02 momjian Exp $
* $Header: /cvsroot/pgsql/src/backend/utils/adt/Attic/sets.c,v 1.15 1998/07/27 19:38:21 vadim Exp $
*
*-------------------------------------------------------------------------
*/
@@ -123,7 +123,7 @@ SetDefine(char *querystr, char *typename)
oidKey[0].sk_argument = ObjectIdGetDatum(setoid);
pg_proc_scan = heap_beginscan(procrel,
0,
true,
SnapshotSelf,
1,
oidKey);
tup = heap_getnext(pg_proc_scan, 0, &buffer);

4
src/backend/utils/cache/catcache.c vendored
View File

@@ -7,7 +7,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/utils/cache/catcache.c,v 1.30 1998/07/20 16:57:03 momjian Exp $
* $Header: /cvsroot/pgsql/src/backend/utils/cache/catcache.c,v 1.31 1998/07/27 19:38:22 vadim Exp $
*
* Notes:
* XXX This needs to use exception.h to handle recovery when
@@ -994,7 +994,7 @@ SearchSysCache(struct catcache * cache,
*/
MemoryContextSwitchTo(oldcxt);
sd = heap_beginscan(relation, 0, false,
sd = heap_beginscan(relation, 0, SnapshotNow,
cache->cc_nkeys, cache->cc_skey);
/* should this buffer be ReleaseBuffer'd? --djm 8/20/96 */

16
src/backend/utils/cache/relcache.c vendored
View File

@@ -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;

28
src/backend/utils/misc/database.c
View File

@@ -7,7 +7,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/utils/misc/Attic/database.c,v 1.13 1998/07/26 04:31:07 scrappy Exp $
* $Header: /cvsroot/pgsql/src/backend/utils/misc/Attic/database.c,v 1.14 1998/07/27 19:38:26 vadim Exp $
*
*-------------------------------------------------------------------------
*/
@@ -22,12 +22,7 @@
#include "access/heapam.h"
#include "access/xact.h"
#include "catalog/catname.h"
#ifdef MULTIBYTE
#include "catalog/pg_database_mb.h"
#include "mb/pg_wchar.h"
#else
#include "catalog/pg_database.h"
#endif
#include "fmgr.h"
#include "miscadmin.h"
#include "storage/bufmgr.h"
@@ -62,7 +57,7 @@ GetDatabaseInfo(char *name, Oid *owner, char *path)
ScanKeyEntryInitialize(&scanKey, 0, Anum_pg_database_datname,
F_NAMEEQ, NameGetDatum(name));
scan = heap_beginscan(dbrel, 0, false, 1, &scanKey);
scan = heap_beginscan(dbrel, 0, SnapshotNow, 1, &scanKey);
if (!HeapScanIsValid(scan))
elog(ERROR, "GetDatabaseInfo: cannot begin scan of %s", DatabaseRelationName);
@@ -184,11 +179,7 @@ ExpandDatabasePath(char *dbpath)
* --------------------------------
*/
void
#ifdef MULTIBYTE
GetRawDatabaseInfo(char *name, Oid *owner, Oid *db_id, char *path, int *encoding)
#else
GetRawDatabaseInfo(char *name, Oid *owner, Oid *db_id, char *path)
#endif
{
int dbfd;
int fileflags;
@@ -275,25 +266,14 @@ GetRawDatabaseInfo(char *name, Oid *owner, Oid *db_id, char *path)
* means of getting at sys cat attrs.
*/
tup_db = (Form_pg_database) GETSTRUCT(tup);
#ifdef MULTIBYTE
/* get encoding from template database.
This is the "default for default" for
create database command.
*/
if (strcmp("template1",tup_db->datname.data) == 0)
{
SetTemplateEncoding(tup_db->encoding);
}
#endif
if (strcmp(name, tup_db->datname.data) == 0)
{
*db_id = tup->t_oid;
strncpy(path, VARDATA(&(tup_db->datpath)),
(VARSIZE(&(tup_db->datpath)) - VARHDRSZ));
*(path + VARSIZE(&(tup_db->datpath)) - VARHDRSZ) = '\0';
#ifdef MULTIBYTE
*encoding = tup_db->encoding;
#endif
goto done;
}
}