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Date: Tue, 12 Oct 2004 08:28:43 -0500
From: Brian Ford <ford AT vss DOT fsi DOT com>
Reply-To: cygwin AT cygwin DOT com
To: cygwin AT cygwin DOT com
Subject: Re: setjmp/longjmp & signal handlers bug
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On Mon, 11 Oct 2004, Christopher Faylor wrote:

> On Mon, Oct 11, 2004 at 08:56:52PM -0500, Brian Ford wrote:
> >If the handler is set to a function, then first either the handler is
> >reset to SIG_DFL, or an implementation dependent blocking of the signal
> >is performed, and next the handler is called...
> >
> >That's Cygwin's implementation dependent blocking?
>
> Both cygwin and newer versions of linux, apparently.

Ok, this doesn't play well with old style *NIX code, but...

> >Can I just unblock it before calling signal again then?
>
> Yes.  Have you tried it?
>
> Either clear the blocking with sigprocmask or use sigsetjmp and siglongjmp.

Yes, this works.  Thank you for your time and explanation.

-- 
Brian Ford
Senior Realtime Software Engineer
VITAL - Visual Simulation Systems
FlightSafety International
the best safety device in any aircraft is a well-trained pilot...

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