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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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17
src/backend/commands/dbcommands.c
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@@ -7,7 +7,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/commands/dbcommands.c,v 1.17 1998/07/26 04:30:24 scrappy Exp $
* $Header: /cvsroot/pgsql/src/backend/commands/dbcommands.c,v 1.18 1998/07/27 19:37:52 vadim Exp $
*
*-------------------------------------------------------------------------
*/
@@ -22,11 +22,7 @@
#include "access/htup.h"
#include "access/relscan.h"
#include "catalog/catname.h"
#ifdef MULTIBYTE
#include "catalog/pg_database_mb.h"
#else
#include "catalog/pg_database.h"
#endif
#include "catalog/pg_shadow.h"
#include "commands/dbcommands.h"
#include "fmgr.h"
@@ -47,11 +43,7 @@ static HeapTuple get_pg_dbtup(char *command, char *dbname, Relation dbrel);
static void stop_vacuum(char *dbpath, char *dbname);
void
#ifdef MULTIBYTE
createdb(char *dbname, char *dbpath, int encoding)
#else
createdb(char *dbname, char *dbpath)
#endif
{
Oid db_id,
user_id;
@@ -98,13 +90,8 @@ createdb(char *dbname, char *dbpath)
dbname, user_id, dbname);
#endif
#ifdef MULTIBYTE
sprintf(buf, "insert into pg_database (datname, datdba, encoding, datpath)"
" values (\'%s\', \'%d\', \'%d\', \'%s\');", dbname, user_id, encoding, loc);
#else
sprintf(buf, "insert into pg_database (datname, datdba, datpath)"
" values (\'%s\', \'%d\', \'%s\');", dbname, user_id, loc);
#endif
pg_exec_query(buf);
}
@@ -168,7 +155,7 @@ get_pg_dbtup(char *command, char *dbname, Relation dbrel)
ScanKeyEntryInitialize(&scanKey, 0, Anum_pg_database_datname,
F_NAMEEQ, NameGetDatum(dbname));
scan = heap_beginscan(dbrel, 0, false, 1, &scanKey);
scan = heap_beginscan(dbrel, 0, SnapshotNow, 1, &scanKey);
if (!HeapScanIsValid(scan))
elog(ERROR, "%s: cannot begin scan of pg_database.", command);