database/postgres
1
0
Fork 0
mirror of https://github.com/postgres/postgres.git synced 2025-11-12 05:01:15 +03:00
Code Activity

Implement isolation levels read uncommitted and repeatable read as acting

Browse Source 
like the next higher one.
This commit is contained in:
Peter Eisentraut
2003-11-06 22:08:15 +00:00
parent 144a2ecd57
commit 96889392e9
15 changed files with 156 additions and 69 deletions
Download Patch File Download Diff File Expand all files Collapse all files

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

@@ -17,7 +17,7 @@
*
* Portions Copyright (c) 1996-2003, PostgreSQL Global Development Group
*
* $Header: /cvsroot/pgsql/src/backend/utils/adt/ri_triggers.c,v 1.63 2003/10/31 03:58:20 wieck Exp $
* $Header: /cvsroot/pgsql/src/backend/utils/adt/ri_triggers.c,v 1.64 2003/11/06 22:08:15 petere Exp $
*
* ----------
*/
@@ -3073,7 +3073,7 @@ ri_PerformCheck(RI_QueryKey *qkey, void *qplan,
* rows under current snapshot that wouldn't be visible per the
* transaction snapshot).
*/
if (XactIsoLevel == XACT_SERIALIZABLE)
if (IsXactIsoLevelSerializable)
{
useCurrentSnapshot = detectNewRows;
}

14
src/backend/utils/misc/guc.c
View File

@@ -10,7 +10,7 @@
* Written by Peter Eisentraut <peter_e@gmx.net>.
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/utils/misc/guc.c,v 1.164 2003/10/18 22:59:09 petere Exp $
* $Header: /cvsroot/pgsql/src/backend/utils/misc/guc.c,v 1.165 2003/11/06 22:08:15 petere Exp $
*
*--------------------------------------------------------------------
*/
@@ -1346,7 +1346,7 @@ static struct config_string ConfigureNamesString[] =
{"default_transaction_isolation", PGC_USERSET, CLIENT_CONN_STATEMENT,
gettext_noop("Sets the transaction isolation level of each new transaction."),
gettext_noop("Each SQL transaction has an isolation level, which "
"can be either \"read committed\" or \"serializable\".")
"can be either \"read uncommitted\", \"read committed\", \"repeatable read\", or \"serializable\".")
},
&default_iso_level_string,
"read committed", assign_defaultxactisolevel, NULL
@@ -4238,11 +4238,21 @@ assign_defaultxactisolevel(const char *newval, bool doit, bool interactive)
if (doit)
DefaultXactIsoLevel = XACT_SERIALIZABLE;
}
else if (strcasecmp(newval, "repeatable read") == 0)
{
if (doit)
DefaultXactIsoLevel = XACT_REPEATABLE_READ;
}
else if (strcasecmp(newval, "read committed") == 0)
{
if (doit)
DefaultXactIsoLevel = XACT_READ_COMMITTED;
}
else if (strcasecmp(newval, "read uncommitted") == 0)
{
if (doit)
DefaultXactIsoLevel = XACT_READ_UNCOMMITTED;
}
else
return NULL;
return newval;

4
src/backend/utils/time/tqual.c
View File

@@ -16,7 +16,7 @@
* Portions Copyright (c) 1994, Regents of the University of California
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/utils/time/tqual.c,v 1.70 2003/10/01 21:30:52 tgl Exp $
* $Header: /cvsroot/pgsql/src/backend/utils/time/tqual.c,v 1.71 2003/11/06 22:08:15 petere Exp $
*
*-------------------------------------------------------------------------
*/
@@ -984,7 +984,7 @@ SetQuerySnapshot(void)
return;
}
if (XactIsoLevel == XACT_SERIALIZABLE)
if (IsXactIsoLevelSerializable)
QuerySnapshot = SerializableSnapshot;
else
QuerySnapshot = GetSnapshotData(&QuerySnapshotData, false);