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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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7
src/backend/bootstrap/bootstrap.c
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@ -8,7 +8,7 @@
* Portions Copyright (c) 1994, Regents of the University of California
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/bootstrap/bootstrap.c,v 1.179 2004/05/21 05:07:56 tgl Exp $
* $PostgreSQL: pgsql/src/backend/bootstrap/bootstrap.c,v 1.180 2004/05/27 17:12:49 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -489,12 +489,12 @@ BootstrapMain(int argc, char *argv[])
break;
case BS_XLOG_CHECKPOINT:
InitXLOGAccess();
CreateCheckPoint(false, false);
SetSavedRedoRecPtr(); /* pass redo ptr back to
* postmaster */
proc_exit(0); /* done */
case BS_XLOG_BGWRITER:
InitXLOGAccess();
BufferBackgroundWriter();
proc_exit(0); /* done */
@ -504,6 +504,7 @@ BootstrapMain(int argc, char *argv[])
proc_exit(0); /* done */
case BS_XLOG_SHUTDOWN:
InitXLOGAccess();
ShutdownXLOG(0, 0);
DumpFreeSpaceMap(0, 0);
proc_exit(0); /* done */