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

Paul-Arthur Sauvageot via Pd-dev pd-dev at lists.iem.at
Tue Jul 8 14:42:44 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.


I don't understand what you mean by protect libpd calls with a lock. Isn't
it what I'm doing with libpd_lock() ?


2014-07-08 12:39 GMT+02:00 Miller Puckette <msp at ucsd.edu>:

> 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#.
>
> > _______________________________________________
> > Pd-dev mailing list
> > Pd-dev at lists.iem.at
> > http://lists.puredata.info/listinfo/pd-dev
>
>


-- 
SAUVAGEOT Paul-Arthur.
Développeur C \ C++ \ C#.
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