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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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28
src/backend/utils/misc/database.c
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@@ -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;
}
}