From 4a78cdeb6b598940e9d9adb92deca6494628802a Mon Sep 17 00:00:00 2001 From: Tom Lane Date: Wed, 1 Aug 2007 22:45:09 +0000 Subject: Support an optional asynchronous commit mode, in which we don't flush WAL before reporting a transaction committed. Data consistency is still guaranteed (unlike setting fsync = off), but a crash may lose the effects of the last few transactions. Patch by Simon, some editorialization by Tom. --- src/include/access/xlog.h | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) (limited to 'src/include/access/xlog.h') diff --git a/src/include/access/xlog.h b/src/include/access/xlog.h index adc99a6eb06..2e1928dace0 100644 --- a/src/include/access/xlog.h +++ b/src/include/access/xlog.h @@ -6,7 +6,7 @@ * Portions Copyright (c) 1996-2007, PostgreSQL Global Development Group * Portions Copyright (c) 1994, Regents of the University of California * - * $PostgreSQL: pgsql/src/include/access/xlog.h,v 1.81 2007/07/24 04:54:09 tgl Exp $ + * $PostgreSQL: pgsql/src/include/access/xlog.h,v 1.82 2007/08/01 22:45:09 tgl Exp $ */ #ifndef XLOG_H #define XLOG_H @@ -197,8 +197,11 @@ extern CheckpointStatsData CheckpointStats; extern XLogRecPtr XLogInsert(RmgrId rmid, uint8 info, XLogRecData *rdata); extern void XLogFlush(XLogRecPtr RecPtr); extern void XLogBackgroundFlush(void); +extern void XLogAsyncCommitFlush(void); extern bool XLogNeedsFlush(XLogRecPtr RecPtr); +extern void XLogSetAsyncCommitLSN(XLogRecPtr record); + extern void xlog_redo(XLogRecPtr lsn, XLogRecord *record); extern void xlog_desc(StringInfo buf, uint8 xl_info, char *rec); -- cgit v1.2.3