Re: Parallel worker hangs while handling errors.

Robert Haas <robertmhaas@gmail.com> writes:
> On Fri, Aug 7, 2020 at 11:36 AM Tom Lane <tgl@sss.pgh.pa.us> wrote:
>> The sigdelset call, just like the adjacent pqsignal calls, is
>> preparatory setup; it does not intend to allow anything to happen
>> immediately.

> I don't think that your analysis here is correct. The sigdelset call
> is manipulating BlockSig, and the subsequent PG_SETMASK call is
> working with UnblockSig, so it doesn't make sense to view one as a
> preparatory step for the other.

That SETMASK call will certainly unblock SIGQUIT, so I don't see what
your point is.  Anyway, the bottom line is that that code's been like
that for a decade or two without complaints, so I'm disinclined to
mess with it on the strength of nothing much.

            regards, tom lane