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Get rid of the former rather baroque mechanism for propagating the values

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of ThisStartUpID and RedoRecPtr into new backends.  It's a lot easier just
to make them all grab the values out of shared memory during startup.
This helps to decouple the postmaster from checkpoint execution, which I
need since I'm intending to let the bgwriter do it instead, and it also
fixes a bug in the Win32 port: ThisStartUpID wasn't getting propagated at
all AFAICS.  (Doesn't give me a lot of faith in the amount of testing that
port has gotten.)
This commit is contained in:
Tom Lane
2004-05-27 17:12:57 +00:00
parent bb44a7c525
commit 16974ee910
6 changed files with 38 additions and 59 deletions
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6
src/include/access/xlog.h
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@@ -6,7 +6,7 @@
* Portions Copyright (c) 1996-2003, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* $PostgreSQL: pgsql/src/include/access/xlog.h,v 1.49 2004/02/11 22:55:25 tgl Exp $
* $PostgreSQL: pgsql/src/include/access/xlog.h,v 1.50 2004/05/27 17:12:57 tgl Exp $
*/
#ifndef XLOG_H
#define XLOG_H
@@ -230,11 +230,9 @@ extern void XLOGPathInit(void);
extern void BootStrapXLOG(void);
extern void StartupXLOG(void);
extern void ShutdownXLOG(int code, Datum arg);
extern void InitXLOGAccess(void);
extern void CreateCheckPoint(bool shutdown, bool force);
extern void SetThisStartUpID(void);
extern void XLogPutNextOid(Oid nextOid);
extern void SetSavedRedoRecPtr(void);
extern void GetSavedRedoRecPtr(void);
extern XLogRecPtr GetRedoRecPtr(void);
/* in storage/ipc/sinval.c, but don't want to declare in sinval.h because