Re: glib & *nix signals

["Brian J. Tarricone" <bjt23 cornell edu>]

On 02/04/2010 11:11 AM, Thomas Stover wrote:
> I'm looking for some notes / advise on catching SIGTERM in a glib main
> loop based program. 
> Mainly on linux, but other kernels would be nice. This article:
>
> http://www.linuxjournal.com/article/2121
>
> for instance, recommends masking all signals all the time and creating a
> dedicated thread siting around in a call to sigwait(). Translating that
> into glib threads might work. Any thoughts?

I usually create a pipe (see pipe(2)), wrap the read side in a
GIOChannel, and watch it via g_io_add_watch().  Then I write to that
pipe in my signal handler.  When the main loop wakes up again, it'll run
the IO watch's callback function.  See:

http://git.xfce.org/xfce/libxfce4util/tree/libxfce4util/xfce-posix-signal-handler.c

for some example code.  It's simple and doesn't require the use of threads.

        -brian