diff options
| author | Tom Lane <tgl@sss.pgh.pa.us> | 2001-02-26 00:50:08 +0000 |
|---|---|---|
| committer | Tom Lane <tgl@sss.pgh.pa.us> | 2001-02-26 00:50:08 +0000 |
| commit | 9c9936587c6a9aeb8b425a499cf73e5e7af38ddd (patch) | |
| tree | f1d7328907a9ffb8a9319b689a9bb40f7e1d0313 /src/include/access/xlog.h | |
| parent | 60774e821060dd6d6395504d4ccda107d2a71a42 (diff) | |
| download | postgresql-9c9936587c6a9aeb8b425a499cf73e5e7af38ddd.tar.gz postgresql-9c9936587c6a9aeb8b425a499cf73e5e7af38ddd.zip | |
Implement COMMIT_SIBLINGS parameter to allow pre-commit delay to occur
only if at least N other backends currently have open transactions. This
is not a great deal of intelligence about whether a delay might be
profitable ... but it beats no intelligence at all. Note that the default
COMMIT_DELAY is still zero --- this new code does nothing unless that
setting is changed.
Also, mark ENABLEFSYNC as a system-wide setting. It's no longer safe to
allow that to be set per-backend, since we may be relying on some other
backend's fsync to have synced the WAL log.
Diffstat (limited to 'src/include/access/xlog.h')
| -rw-r--r-- | src/include/access/xlog.h | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/src/include/access/xlog.h b/src/include/access/xlog.h index 47e14c3a827..c17bf32cc55 100644 --- a/src/include/access/xlog.h +++ b/src/include/access/xlog.h @@ -3,7 +3,7 @@ * * PostgreSQL transaction log manager * - * $Header: /cvsroot/pgsql/src/include/access/xlog.h,v 1.17 2001/01/14 05:08:16 tgl Exp $ + * $Header: /cvsroot/pgsql/src/include/access/xlog.h,v 1.18 2001/02/26 00:50:07 tgl Exp $ */ #ifndef XLOG_H #define XLOG_H @@ -146,4 +146,9 @@ extern void ShutdownXLOG(void); extern void CreateCheckPoint(bool shutdown); extern void SetThisStartUpID(void); +/* in storage/ipc/sinval.c, but don't want to declare in sinval.h because + * we'd have to include xlog.h into that ... + */ +extern XLogRecPtr GetUndoRecPtr(void); + #endif /* XLOG_H */ |