| From: | Bruce Momjian <pgman(at)candle(dot)pha(dot)pa(dot)us> |
|---|---|
| To: | Tatsuo Ishii <t-ishii(at)sra(dot)co(dot)jp> |
| Cc: | pgsql-hackers(at)postgreSQL(dot)org |
| Subject: | Re: [HACKERS] postmaster.pid |
| Date: | 1999-12-03 08:38:02 |
| Message-ID: | 199912030838.DAA08933@candle.pha.pa.us |
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| Thread: | |
| Lists: | pgsql-hackers |
> > > 2) if it fails to create pid file, call
> > > ExitPostmaster(1). ExitPostmaster calls proc_exit() and proc_exit
> > > calls exit().
> >
> > So you don't start if the pid file is there,
>
> Right.
>
> >or do you delete it if the
> > port is free?
>
> No. even if the port is free, there might be another postmaster that
> uses another one.
>
> Wait, maybe I can check postmaster.opts to see if another postamster
> really exists...
You can do kill(0) on the pid to see if it is actually a real pid.
Rather than playing with the port, just check the pid because the
postmaster could be startup up by not on the port yet.
--
Bruce Momjian | http://www.op.net/~candle
maillist(at)candle(dot)pha(dot)pa(dot)us | (610) 853-3000
+ If your life is a hard drive, | 830 Blythe Avenue
+ Christ can be your backup. | Drexel Hill, Pennsylvania 19026
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