database/postgres
1
0
Fork 0
mirror of https://github.com/postgres/postgres.git synced 2025-07-15 19:21:59 +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

12
src/include/access/xact.h
View File

@ -7,7 +7,7 @@
* Portions Copyright (c) 1996-2003, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* $Id: xact.h,v 1.57 2003/10/16 16:50:41 tgl Exp $
* $Id: xact.h,v 1.58 2003/11/06 22:08:15 petere Exp $
*
*-------------------------------------------------------------------------
*/
@ -22,14 +22,20 @@
/*
* Xact isolation levels
*/
#define XACT_DIRTY_READ 0 /* not implemented */
#define XACT_READ_UNCOMMITTED 0
#define XACT_READ_COMMITTED 1
#define XACT_REPEATABLE_READ 2 /* not implemented */
#define XACT_REPEATABLE_READ 2
#define XACT_SERIALIZABLE 3
extern int DefaultXactIsoLevel;
extern int XactIsoLevel;
/*
* We only implement two distinct levels, so this is a convenience to
* check which level we're really using internally.
*/
#define IsXactIsoLevelSerializable ((XactIsoLevel == XACT_REPEATABLE_READ || XactIsoLevel == XACT_SERIALIZABLE))
/* Xact read-only state */
extern bool DefaultXactReadOnly;
extern bool XactReadOnly;