[PD] watchdog

[Raphaël Ilias]

Hello,

Maybe not as technical as your solution, but on a Windows machine for an
art installation, i did a quick "watchdog" that checked a "stillalive"
file, that was regularly modified by the pd patch. So when/if pd crashed,
the file wasn't updated anymore and the script would restart it. I think it
was done in python...

cheers

2018-05-03 11:56 GMT+02:00 Jack <jack at rybn.org>:

> If you have several instances of Pd, it is also doable to do something
> like :
>
> pd -open yourpatch1.pd &
> PID1=$!
> pd -open yourpatch2.pd &
> PID2=$!
>
> while true
> do
>     if [ ! -d /proc/$PID1 ]
>     then
>         pd -open yourpatch1.pd &
>         PID1=$!
>     fi
>     if [ ! -d /proc/$PID2 ]
>     then
>         pd -open yourpatch2.pd &
>         PID2=$!
>     fi
> done
>
>
> ++
>
> Jack
>
>
>
> Le 03/05/2018 à 11:46, Jack a écrit :
> > Hey list !
> >
> > Le 03/05/2018 à 09:42, Roman Haefeli a écrit :
> >> On Thu, 2018-05-03 at 06:29 +0200, michael strohmann wrote:
> >>> Hello,
> >>> i wonder if it is possible to setup something on raspberry, so that
> >>> the puredata-watchdog will restart pd-0.48.0 automatically?
> >>> where could i look up the mechanics of this, unfortunatly i am not a
> >>> unix crack…
> >>
> >> Are you referring to the pd-watchdog binary, that comes with puredata-
> >> core? Is your Raspberry Pi running Raspbian?
> >>
> >> From what I understand, the purpose of the pd-watchdog is to pause Pd
> >> in regular intervals when running in real-time mode. I think this is
> >> measure to prevent Pd from locking up the system. Assume you
> >> accidentally trigger an [until] without a stopping mechanism, thanks to
> >>  pd-watchdog you're still able to move the mouse and quit Pd.
> >>
> >> Is your goal to make sure that Pd is running at any time, so that it is
> >> started again as soon as it stops?  Maybe you can achieve something
> >> like this wit a shell script. I haven't tested this, but it might give
> >> you an idea how to make it work:
> >>
> >> ---
> >> #!/bin/sh
> >>
> >> while true
> >> do
> >>   # We start pd and send detach it from the terminal ('&')
> >>   /usr/bin/pd -open yourpatch &
> >>
> >>   # we catch pd's process id
> >>   pdpid=$!
> >>
> >>   # now let's wait for the process to terminate
> >>   wait $pdpid
> >>
> >>   # once pd terminates, we start another iteration
> >>   # of our while-loop
> >> done
> >
> > I will do something like :
> >
> > while true
> > do
> >     pd -open yourpatch # if pd crash the script continue to "sleep 1"
> > and a new loop start
> >     sleep 1
> > done
> >
> > ++
> >
> > Jack
> >
> >
> >
> >> ---
> >>
> >> Roman
> >>
> >>
> >>
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> >>
> >
> >
> >
> >
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>
>
>
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>


-- 
Raphaël Ilias
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