[PD-dev] Libpd multi instance on a VST host

Miller Puckette via Pd-dev pd-dev at lists.iem.at
Tue Jul 8 12:39:00 CEST 2014


On minor thing - you probably have to protect all of the libpd() calls with
a lock to keep separate threads from getting to it simultaneously.  (It's
not sufficient to just use the "THREAD_LOCK" mechanism in Pd - that would 
protect Pd OK but not the libpd code.

cheers
Miller

On Tue, Jul 08, 2014 at 11:56:36AM +0200, Paul-Arthur Sauvageot via Pd-dev wrote:
> >
> > from your host? from juce?
> > fgmsdr
> > IOhannes
> 
> 
> I tried with different hosts and the problem is the same.
> I don't think it comes from JUCE neither. The things is if I remove the
> pd_setinstance() calls, it doesn't crash (But the sound is ugly, as it was
> before the multi instance update, which is logic). The weird thing being
> that it doesn't crash in the VST functions, but it has something to do with
> those pd_setinstance() calls which are only made on the VST functions...
> 
> 
> 2014-07-08 11:43 GMT+02:00 IOhannes m zmoelnig <zmoelnig at iem.at>:
> 
> > -----BEGIN PGP SIGNED MESSAGE-----
> > Hash: SHA256
> >
> > On 2014-07-08 10:54, Paul-Arthur Sauvageot via Pd-dev wrote:
> > > Hello,
> > >
> > > I'm currently trying to make a VST that uses libpd and the pd
> > > update allowing multi instances (via pd_instance). But it's not
> > > working,
> >
> > i would be very surprised if - at this moment - the multi-instance
> > code *would* be working.
> > afaict, we are making *small* steps towards this goal.
> >
> >
> > > According to my logs and my debugger, it never crashes in the VST
> > > functions, it seems to crash on some pthread functions like
> > > pthread_kill but I never use these functions...
> > >
> > > Does someone has any idea of where it could come from ?
> >
> > from your host? from juce?
> >
> > fgmsdr
> > IOhannes
> >
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> 
> 
> 
> -- 
> SAUVAGEOT Paul-Arthur.
> Développeur C \ C++ \ C#.

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