Re: [Chicken-users] Wierd behaviour of process.

[Robin Lee Powell]

On Sun, Jan 14, 2007 at 11:48:52PM -0800, address@hidden wrote:
> On Mon, Jan 15, 2007 at 08:43:27AM +0100, felix winkelmann wrote:
> > On 1/15/07, Robin Lee Powell <address@hidden> wrote:
> > >On Mon, Jan 15, 2007 at 08:16:58AM +0100, felix winkelmann wrote:
> > >> On 1/14/07, Robin Lee Powell <address@hidden> wrote:
> > >> >
> > >> >That made me think that doing a "wait" on the process *is*
> > >> >behaviour I want, and I should do that.  However, process-wait
> > >> >throws an error if the process has already exited, and I can't
> > >> >seem to trap it.  I tried:
> > >> >
> > >> >(condition-case (process-wait pid) (var () #t))
> > >> >
> > >>
> > >> This should work. Are you running this interactively?
> > >
> > >If by interactively you mean with csi: nope; it's in the middle of a
> > >very complex system with thousands of lines of code in at least 4
> > >languages.  :-)
> > >
> > 
> > Oh, great! ;-)
> > 
> > Do you use with-exception-handler a lot? 
> 
> This is my first long piece of Scheme code.  :-)
> 
> So, no.
> 
> > Does the process-wait inside an exception-handler work when run
> > stand-alone (without the rest of the code)?
> > 
> > Can you test whether the process is still alive, before doing the
> > test (perhaps by checking the /proc directory or through some
> > other hacks)?
> 
> Ouch.  That's all going to take a while; I'll see if I can get back
> to you.

Erm.  I can no longer reproduce this bug, even in the original code.

;_;

So call this good for now; I'll get back to you if it comes up
again.

(Still need help with the exit value stuff)

-Robin

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