From: Mike B <barjunk@...>
Date: 2009-03-25T09:56:53+09:00
Subject: Re: Looking for a method to kill all children for my Timeout::Error 	contingency

On Mar 24, 12:23 pm, Xeno Campanoli <xeno.campan...@gmail.com> wrote:
> Jos Backus wrote:
> > On Wed, Mar 25, 2009 at 04:57:03AM +0900, Xeno Campanoli wrote:
> >> Do I really need to collect all the pids from fork to kill them in that case, or
> >> is there a method I'm not finding in pickaxe that just does it???
>
> > Here's a trick I use, maybe it is useful. Note that even if push-to-slaves
> > creates children, those too will be killed because they reside in the same
> > process group.
>
> The problem with that is I have many processes, so I would be doing this with
> arrays and loops, which suddenly becomes problematic.  If I could just call
> something that automatically kills the entire tree of children on down that
> would be much nicer...??
>
>
>
>
>
> >   require 'timeout'
> >   signal = '-TERM'
> >   timeout = 30
>
> >   pid = Process.fork do
> >     Process.setsid
> >     exec %{push-to-slaves -v}
> >   end
> >   begin
> >     Timeout::timeout(timeout) { Process.waitpid(pid) }
> >   rescue Timeout::Error => exc
> >     puts "#{exc.message}, killing pid #{pid}"
> >     Process.kill(signal, pid)
> >     res = Process.waitpid(pid)
> >     puts "pid #{pid.inspect} != res #{res.inspect}" if res != pid
> >   end
>
> --
> "Facts do not cease to exist because they are ignored" - Aldous Huxley
> "...Or I might add, because they are denied" - Dr. Albert A. Bartletthttp://www.eskimo.com/~xeno

Maybe this could help?

http://markmail.org/message/3nl2idghbekgbahb

It's a link to Ara Howards announcement for terminator.

Mike B.