Re: SIGPIPE handling

Tom Lane wrote:
> Manfred Spraul <manfred(at)colorfullife(dot)com> writes:
> > But how should libpq notice that the caller handles sigpipe signals?
> > a) autodetection - if the sigpipe handler is not the default, then the
> > caller knows what he's doing.
> > b) a new PGsetsignalhandler() function.
> > c) an additional flag passed to PGconnectdb.
>
> > Tom preferred a). One problem is that the autodetection is not perfect:
> > an app could block the signal with sigprocmask, or it could install a
> > handler that doesn't expect sigpipe signals from within libpq.
> > I would prefer b), because it guarantees that the patch has no effect on
> > existing apps.
>
> I have no particular objection to (b) either, but IIRC there was some
> dispute about whether it sets a global or per-connection flag. ISTM
> that "I have a correct signal handler" is a global assertion (within one
> process) and so a global flag is appropriate. Someone else (Bruce?)
> didn't like that though.

I thought it should be global too, basically testing on the first
connection request.

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