Re: dynamic background workers, round two

On 2013-07-26 08:50:51 -0400, Robert Haas wrote:
> > > > Btw, you seem to want to support this in bgworkers started by a
> > > > bgworker. That's not going to work without some changes if the
> > > > "intermediate" bgworker is one without a backend since those don't use
> > > > procsignal_sigusr1_handler.

> > > Right.  I think it's OK for now to limit it to cases where the
> > > intermediate bgworker has a backend.  If someone else finds that
> > > restriction unacceptable, they can fix it.

> > I don't have a problem with the restriction, but I'd like to see a check
> > against it. Maybe check for MyBackendId != InvalidBackendId in
> > RegisterDynamicBackgroundWorker()? That would also prevent starting
> > further bgworkers before BackgroundWorkerInitializeConnection() is done
> > in a connected bgworker which seems to be a good thing.
> 
> Well, that's easy enough to fix.  Should we Assert() or elog() or
> what?

I think that's not in the patch yet either.

Greetings,

Andres Freund

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