| From: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
|---|---|
| To: | Andres Freund <andres(at)anarazel(dot)de> |
| Cc: | Robert Haas <robertmhaas(at)gmail(dot)com>, "pgsql-hackers(at)postgresql(dot)org" <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: PostmasterContext survives into parallel workers!? |
| Date: | 2016-08-01 22:28:44 |
| Message-ID: | 19232.1470090524@sss.pgh.pa.us |
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| Lists: | pgsql-hackers |
Andres Freund <andres(at)anarazel(dot)de> writes:
> On 2016-08-01 18:09:03 -0400, Robert Haas wrote:
>> (Also vaguely on the list of things to clean up: can't we make it so
>> that bgworkers aren't launched from inside a signal handler? Blech.)
> Isn't pretty much everything on-demand below postmaster started from a
> signal handler?
I think it depends. As an example, maybe_start_bgworker is called
from PostmasterMain, *and* from ServerLoop, *and* from reaper,
*and* from sigusr1_handler. That's likely excessive, but it's what
we've got at the moment.
I'm pretty sure regular backends are only launched from ServerLoop,
but for anything else it's uncertain.
regards, tom lane
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