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| author | Joe Conway <mail@joeconway.com> | 2010-09-11 18:38:58 +0000 |
|---|---|---|
| committer | Joe Conway <mail@joeconway.com> | 2010-09-11 18:38:58 +0000 |
| commit | 5eb15c9942a9bd6aaf712f2ab6175005e035168a (patch) | |
| tree | 5795253ca2eeb8850761da17341ee062078894a0 /src/include | |
| parent | 262c71ab63d5781cd68b23d2058cbb45ad67a54c (diff) | |
| download | postgresql-5eb15c9942a9bd6aaf712f2ab6175005e035168a.tar.gz postgresql-5eb15c9942a9bd6aaf712f2ab6175005e035168a.zip | |
SERIALIZABLE transactions are actually implemented beneath the covers with
transaction snapshots, i.e. a snapshot registered at the beginning of
a transaction. Change variable naming and comments to reflect this reality
in preparation for a future, truly serializable mode, e.g.
Serializable Snapshot Isolation (SSI).
For the moment transaction snapshots are still used to implement
SERIALIZABLE, but hopefully not for too much longer. Patch by Kevin
Grittner and Dan Ports with review and some minor wording changes by me.
Diffstat (limited to 'src/include')
| -rw-r--r-- | src/include/access/xact.h | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/src/include/access/xact.h b/src/include/access/xact.h index 12ec693f443..aa670a22ac8 100644 --- a/src/include/access/xact.h +++ b/src/include/access/xact.h @@ -7,7 +7,7 @@ * Portions Copyright (c) 1996-2010, PostgreSQL Global Development Group * Portions Copyright (c) 1994, Regents of the University of California * - * $PostgreSQL: pgsql/src/include/access/xact.h,v 1.103 2010/02/26 02:01:21 momjian Exp $ + * $PostgreSQL: pgsql/src/include/access/xact.h,v 1.104 2010/09/11 18:38:58 joe Exp $ * *------------------------------------------------------------------------- */ @@ -35,7 +35,7 @@ extern int XactIsoLevel; * We only implement two isolation levels internally. This macro should * be used to check which one is selected. */ -#define IsXactIsoLevelSerializable (XactIsoLevel >= XACT_REPEATABLE_READ) +#define IsolationUsesXactSnapshot() (XactIsoLevel >= XACT_REPEATABLE_READ) /* Xact read-only state */ extern bool DefaultXactReadOnly; |