Re: getpid() function

From: Bruce Momjian <pgman(at)candle(dot)pha(dot)pa(dot)us>
To: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
Cc: Thomas Lockhart <lockhart(at)fourpalms(dot)org>, Karel Zak <zakkr(at)zf(dot)jcu(dot)cz>, PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: getpid() function
Date: 2002-08-04 03:03:21
Message-ID: 200208040303.g7433Lr25210@candle.pha.pa.us
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Tom Lane wrote:
> Bruce Momjian <pgman(at)candle(dot)pha(dot)pa(dot)us> writes:
> > As I remember, most cases where people have recently been asking for
> > backend pid were related to temp tables because they were named by pid.
>
> Ah, good point.
>
> > I don't think they are anymore. (?)
>
> Check.
>
> > We can do two things. We can either rename it to pg_backend_pid and
> > move it to the statistics section in the docs, where the backend pids of
> > all active backends are available, or remove my code additions and see
> > if anyone asks for it in 7.3.
>
> Let's take it out and wait to see if anyone really still wants it.

Just when I am ready to throw it away, I come up with a use for the
function:

test=> select * from pg_stat_activity where procpid != backend_pid();

This shows all activity _except_ my session, which pgmonitor or others
may want to use, and I can think of no other way to do it.

Comments? Maybe this is why it should be called pg_backend_id and put
in the stat section.

--
Bruce Momjian | http://candle.pha.pa.us
pgman(at)candle(dot)pha(dot)pa(dot)us | (610) 853-3000
+ If your life is a hard drive, | 830 Blythe Avenue
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