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Re: [libc-alpha] mt-application hanging in exit()
- From: Jakub Jelinek <jakub at redhat dot com>
- To: Andreas Schwab <schwab at suse dot de>
- Cc: Bertold dot Kolics at Sun dot COM, Andreas Jaeger <aj at suse dot de>, libc-alpha at sources dot redhat dot com, Kaz Kylheku <kaz at ashi dot footprints dot net>
- Date: Sat, 19 Jan 2002 21:01:59 +0100
- Subject: Re: [libc-alpha] mt-application hanging in exit()
- References: <200201191927.g0JJRjI25346@rowlf.Central.Sun.COM> <email@example.com>
- Reply-to: Jakub Jelinek <jakub at redhat dot com>
On Sat, Jan 19, 2002 at 08:56:00PM +0100, Andreas Schwab wrote:
> Bertold Kolics <Bertold.Kolics@Sun.COM> writes:
> |> Hallo Andreas,
> |> >> Then we must have a problem. I can reproduce it each & every time. I have run
> |> >> my app under strace using microsec timestamping, and I could see the restart
> |> >> signal arriving before the signal mask modification is done inside suspend().
> |> >
> |> >Please send a *small* program that shows the problem,
> |> I may have found the problem, but I still believe that there is a problem in glibc.
> |> Before setting up the signal handlers, I used to clear the signal mask of the process.
> You must not call sigprocmask in a multi-threaded process. Use
> pthread_sigmask instead.
Also, doshutdown should be volatile if you check for it using
(well, much better would be to use some CPU friendly way, like conditional
variable or something).