* Portions Copyright (c) 1996-2004, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
- * $PostgreSQL: pgsql/src/include/access/xact.h,v 1.71 2004/08/29 05:06:55 momjian Exp $
+ * $PostgreSQL: pgsql/src/include/access/xact.h,v 1.72 2004/09/05 23:01:26 tgl Exp $
*
*-------------------------------------------------------------------------
*/
extern int XactIsoLevel;
/*
- * We only implement two distinct levels, so this is a convenience to
- * check which level we're really using internally.
+ * We only implement two isolation levels internally. This macro should
+ * be used to check which one is selected.
*/
-#define IsXactIsoLevelSerializable ((XactIsoLevel == XACT_REPEATABLE_READ || XactIsoLevel == XACT_SERIALIZABLE))
+#define IsXactIsoLevelSerializable (XactIsoLevel >= XACT_REPEATABLE_READ)
/* Xact read-only state */
extern bool DefaultXactReadOnly;