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Tweak startup sequence so that running out of PROC array slots is

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detected sooner in backend startup, and is treated as an expected error
(it gives 'Sorry, too many clients already' now).  This allows us not
to have to enforce the MaxBackends limit exactly in the postmaster.
Also, remove ProcRemove() and fold its functionality into ProcKill().
There's no good reason for a backend not to be responsible for removing
its PROC entry, and there are lots of good reasons for the postmaster
not to be touching shared-memory data structures.
This commit is contained in:
Tom Lane
2001-06-16 22:58:17 +00:00
parent 668db147d5
commit 2917f0a5dd
6 changed files with 85 additions and 92 deletions
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3
src/include/storage/proc.h
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@ -7,7 +7,7 @@
* Portions Copyright (c) 1996-2001, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* $Id: proc.h,v 1.43 2001/05/25 15:45:34 momjian Exp $
* $Id: proc.h,v 1.44 2001/06/16 22:58:17 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -129,7 +129,6 @@ typedef struct procglobal
extern void InitProcGlobal(int maxBackends);
extern void InitProcess(void);
extern void ProcReleaseLocks(bool isCommit);
extern bool ProcRemove(int pid);
extern void ProcQueueInit(PROC_QUEUE *queue);
extern int ProcSleep(LOCKMETHODTABLE *lockMethodTable, LOCKMODE lockmode,