Re: postmaster.pid

> -----Original Message-----
> From: Andrew Dunstan [mailto:andrew@dunslane.net]
> Sent: 24 August 2004 15:06
> To: Dave Page
> Cc: Barry Lind; pgsql-hackers-win32@postgresql.org; Max Dunn
> Subject: Re: [pgsql-hackers-win32] postmaster.pid
>
>
>
> I think we're on the wrong track here. If there is a pid file
> then the postmaster will try to see if the process is running
> by calling
> kill(pid,0) - see backend/utils/init/miscinit.c.
>
> However, on Windows we simulate kill(), and always return
> EINVAL if the signal <= 0 (see port/kill.c). ISTM the correct
> solution would be to implement the effect of kill(pid,0) in
> port/kill.c, presumably by a call to some native Windows
> function that gives you the process info for a given pid.

Hi Andrew,

I'm glad you spotted that - I was just about to submit a patch that used
kill(pid, 0)!! My code is now submitted in a slightly different form
which will hopefully help sort this problem, however I have an hour or
so now so I'll take a quick look at the kill() issue.

Regards, Dave.