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| author | Tom Lane <tgl@sss.pgh.pa.us> | 2006-08-17 23:04:10 +0000 |
|---|---|---|
| committer | Tom Lane <tgl@sss.pgh.pa.us> | 2006-08-17 23:04:10 +0000 |
| commit | e8ea9e9587f096fdfbd4e451e2e88afee9009902 (patch) | |
| tree | 0aab256d965b30fa3db37acefd468e5504a8683b /src/include/access/xlog_internal.h | |
| parent | bb764e94ce98c01924879288bd14e76e7c913128 (diff) | |
| download | postgresql-e8ea9e9587f096fdfbd4e451e2e88afee9009902.tar.gz | |
Implement archive_timeout feature to force xlog file switches to occur no more
than N seconds apart. This allows a simple, if not very high performance,
means of guaranteeing that a PITR archive is no more than N seconds behind
real time. Also make pg_current_xlog_location return the WAL Write pointer,
add pg_current_xlog_insert_location to return the Insert pointer, and fix
pg_xlogfile_name_offset to return its results as a two-element record instead
of a smashed-together string, as per recent discussion.
Simon Riggs
Diffstat (limited to 'src/include/access/xlog_internal.h')
| -rw-r--r-- | src/include/access/xlog_internal.h | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/src/include/access/xlog_internal.h b/src/include/access/xlog_internal.h index 03bf0e8623..773e85fbcd 100644 --- a/src/include/access/xlog_internal.h +++ b/src/include/access/xlog_internal.h @@ -11,11 +11,13 @@ * Portions Copyright (c) 1996-2006, PostgreSQL Global Development Group * Portions Copyright (c) 1994, Regents of the University of California * - * $PostgreSQL: pgsql/src/include/access/xlog_internal.h,v 1.15 2006/08/07 16:57:57 tgl Exp $ + * $PostgreSQL: pgsql/src/include/access/xlog_internal.h,v 1.16 2006/08/17 23:04:08 tgl Exp $ */ #ifndef XLOG_INTERNAL_H #define XLOG_INTERNAL_H +#include <time.h> + #include "access/xlog.h" #include "fmgr.h" #include "storage/block.h" @@ -237,6 +239,12 @@ typedef struct RmgrData extern const RmgrData RmgrTable[]; +/* + * Exported to support xlog switching from bgwriter + */ +extern time_t GetLastSegSwitchTime(void); +extern XLogRecPtr RequestXLogSwitch(void); + /* * These aren't in xlog.h because I'd rather not include fmgr.h there. */ @@ -244,6 +252,7 @@ extern Datum pg_start_backup(PG_FUNCTION_ARGS); extern Datum pg_stop_backup(PG_FUNCTION_ARGS); extern Datum pg_switch_xlog(PG_FUNCTION_ARGS); extern Datum pg_current_xlog_location(PG_FUNCTION_ARGS); +extern Datum pg_current_xlog_insert_location(PG_FUNCTION_ARGS); extern Datum pg_xlogfile_name_offset(PG_FUNCTION_ARGS); extern Datum pg_xlogfile_name(PG_FUNCTION_ARGS); |