[PD] how to kill all [shell]'s child before quitting Pd

[Antoine Villeret]

Hi,

thanks Jack for that, I've already seen this solution on the list,
but I need to know when the pd subprocess ends and with a '&' i get a '0'
on [shell] rightmost outlet when 'echo pid $1' command ends and not when pd
ends
moreover when killing Pd the external's destroy() method isn't called and
this could block some hardware (like cameras...)

but maybe I was not clear enough since I have several questions in one
thread...
the problem was to exit all shell subprocess when quitting pd

I solved it thanks to Cyrille by adding a watchdog
the main pd send a "ping" each 100ms to all children, if there is no "ping"
during 1 second, the child kill itself
so the main pd can quit safely

king regards

antoine

--
do it yourself
http://antoine.villeret.free.fr


2013/5/28 Jack <jack at rybn.org>

>  Le 28/05/2013 20:14, Antoine Villeret a écrit :
>
> hi,
>
>  I'm calling a new instance of Pd inside a Pd patch with [shell]
> but I notice I can't quit the main pd instance if a process is still
> running inside the [shell]
>
>  the GUI hangs until the process ends (until I quit Pd)
> since the child pd is running without gui,
>
>  1) is it possible to exit a running process via [shell] ?
> for example how could I send a ^c (ctrl+c) command ?
>
>  2) moreover, how to trig it when I press ctrl+Q or menu quit ?
>
>  3) the [noquit] abstraction gives me a tcl error : "can't rename
> menu_quit command doesn't exists"
>
>  I'm running pd vanilla 0.44-2
>
>  thanks for help
>
>  antoine
>
>  --
> do it yourself
> http://antoine.villeret.free.fr
>
>
> _______________________________________________Pd-list at iem.at mailing list
> UNSUBSCRIBE and account-management -> http://lists.puredata.info/listinfo/pd-list
>
>  Hello Antoine,
>
> With the message [pd & echo $!( to [shell], you should get the PID of the
> subprocess. A [kill number_PID( to [shell] should kill this subprocess.
> ++
>
> Jack
>
>
>
> _______________________________________________
> Pd-list at iem.at mailing list
> UNSUBSCRIBE and account-management ->
> http://lists.puredata.info/listinfo/pd-list
>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.puredata.info/pipermail/pd-list/attachments/20130529/0cbd57c4/attachment.htm>