[Zope] defunct process with os.spawn*

[Alan]

Guys, I must say that I really appreciate your attention, that's
pretty cool to have such a nice people to give support to newbies like
me.

Based on what got here I found a solution that worked for me:

pid_test,st=os.waitpid(jpid,os.WNOHANG)

Now, let's go for the next trouble...

Cheers,
Alan

On 02/08/06, Chris McDonough <chrism at plope.com> wrote:
> You need to call os.waitpid() at some point to clean up finished
> processes.
>
> - C
>
> On Aug 2, 2006, at 1:59 PM, Jonathan wrote:
>
> >
> > ----- Original Message ----- From: "Alan" <alanwilter at gmail.com>
> > To: <zope at zope.org>
> > Sent: Wednesday, August 02, 2006 1:52 PM
> > Subject: [Zope] defunct process with os.spawn*
> >
> >
> >> Dears,
> >>
> >> Now I am facing an annoying problem.
> >>
> >> I have an application in Zope which calls a External Method, which
> >> calls a bash script via:
> >>
> >> var_pid = os.spawnlp(os.P_NOWAIT, 'script.sh', 'script.sh',
> >> arg1,arg2)
> >>
> >> The idea is to start some programs in background (which will take
> >> hours running) and I need to pass arguments and track its PID for
> >> eventually checking its status. So os.spawnlp seemed the perfect
> >> solution.
> >>
> >> However, when my bash script finished, my processes gets <defunct>
> >> childed to the Zope process. And only restarting Zope to get rid of
> >> such defunct process, an unthinkable solution.
> >
> > It sounds like you are generating zombie processes (child processes
> > which have completed, but are not handled by the processes that
> > spawned them). Try googling:  python reap spawned process
> >
> >
> > Jonathan
> >
> >
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> >
>
>


-- 
Alan Wilter S. da Silva, D.Sc. - Research Associate
Department of Biochemistry, University of Cambridge.
80 Tennis Court Road, Cambridge CB2 1GA, UK.
>>http://www.bio.cam.ac.uk/~awd28<<