Tom Lane wrote:
> Bruce Momjian <pgman@candle.pha.pa.us> writes:
> > Tom Lane wrote:
> >> Where exactly is the interlock to ensure that the new backend will end up
> >> with the correct settings if someone is changing the values at about
> >> the time of the fork?
>
> > Postmaster creates a new file, then does rename() to move it to the name
> > used by the backends. It can't move it until the file is not in use.
>
> And?
>
> How exactly does that guarantee that the new backend will see an update
> occurring at about the same time? I'm pretty sure that GUC is fired up
> before backends start listening to signals (and that's assuming the
> Windows port has a Unixy idea of signal response, which I seem to recall
> you telling me wasn't the case).
Oh, I am not sure. I haven't gotten the signal stuff done yet.
--
Bruce Momjian | http://candle.pha.pa.us
pgman@candle.pha.pa.us | (610) 359-1001
+ If your life is a hard drive, | 13 Roberts Road
+ Christ can be your backup. | Newtown Square, Pennsylvania 19073