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List:       kde-core-devel
Subject:    Re: KProcess eats SIGCHLD, so pclose() fails
From:       David Faure <david () mandrakesoft ! com>
Date:       2001-11-30 13:47:13
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On Thursday 29 November 2001 21:01, Luis Pedro Coelho wrote:
> Em Quarta, 28 de Novembro de 2001 21:18, David Faure escreveu:
> > On Wednesday 28 November 2001 20:28, aleXXX wrote:
> > > On Wed 28 Nov 01 18:32, David Faure wrote:
> > > > KProcessController, instantiated by KProcess, seems to grab all SIGCHLD
> > > > events, even the ones that have nothing to do with KProcess.
> > > 
> > > After looking at the code, it grabs exactly SIGCHLD and SIGPIPE since it
> > > has to know when its child dies.
> >
> > Yes, but maybe there's a way to tell it to ignore a certain pid, or to
> > forward unknown signals, or...
> 
> I think this is impossible to do correctly.

Lubos Lunak (a very clever man;) came up with a patch that fixes this.
Not committed yet, under discussion with Waldo.
I ported my kde-2.2.2 code to KProcIO, works great. But it's good to know that
KDE-3 programs will be able to use libraries that use popen/pclose without
trouble.

-- 
David FAURE, david@mandrakesoft.com, faure@kde.org
http://perso.mandrakesoft.com/~david/ , http://www.konqueror.org/
KDE 3.0: Konquering the Desktops

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