[PD-dev] Can somebody help to create a desktop / VST / AU version of a PD / libPD / app ?

Miller Puckette msp at ucsd.edu
Thu Apr 23 02:27:15 CEST 2015 

Hmm... and (just checking) - you did a make clean and rebuilt everything?
The pd_instance structure changed....

I can't get it to fail over here any more...

cheers
Miller

On Wed, Apr 22, 2015 at 05:30:20PM -0400, Dan Wilcox wrote:
> Thanks. Unfortunately still a crash, but now at a different place. I also confirmed that it still runs fine when libpd is compiled with -O3 aka make DEBUG=true.
> 
> #0  signal_cleanup [inlined] () at /Users/dano/src/pd/libpd/pure-data/src/d_ugen.c:364
> #1  0x0000000100026680 in ugen_stop () at d_ugen.c:562
> #2  0x000000010002670e in ugen_start () at d_ugen.c:569
> #3  0x000000010003197e in glob_dsp (dummy=0x100102e00, s=0x0, argc=<value temporarily unavailable, due to optimizations>, argv=0x100102e20) at g_canvas.c:1086
> #4  0x000000010006d286 in pd_typedmess (x=0x1000a5760, s=0x0, argc=1055232, argv=0x100102e20) at m_class.c:699
> #5  0x0000000100096fb8 in libpd_message [inlined] () at /Users/dano/src/pd/libpd/libpd_wrapper/z_libpd.c:236
> #6  0x0000000100096fb8 in libpd_finish_message (recv=<value temporarily unavailable, due to optimizations>, msg=0x100000f67 "dsp") at z_libpd.c:562
> #7  0x0000000100000b8f in main ()
> 
> In detail:
> 
> #0  signal_cleanup [inlined] () at /Users/dano/src/pd/libpd/pure-data/src/d_ugen.c:364
> 364	        pd_this->pd_signals = sig->s_nextused;
> (gdb) frame 1
> #1  0x0000000100026680 in ugen_stop () at d_ugen.c:562
> 364	        pd_this->pd_signals = sig->s_nextused;
> (gdb) frame 2
> #2  0x000000010002670e in ugen_start () at d_ugen.c:569
> 569	    ugen_stop();
> (gdb) frame 3
> #3  0x000000010003197e in glob_dsp (dummy=0x100102e00, s=0x0, argc=<value temporarily unavailable, due to optimizations>, argv=0x100102e20) at g_canvas.c:1086
> 1086	    ugen_start();
> (gdb) frame 4
> #4  0x000000010006d286 in pd_typedmess (x=0x1000a5760, s=0x0, argc=1055232, argv=0x100102e20) at m_class.c:699
> 699	            else (*((t_messgimme)(m->me_fun)))(x, s, argc, argv);
> (gdb) frame 5
> #5  0x0000000100096fb8 in libpd_message [inlined] () at /Users/dano/src/pd/libpd/libpd_wrapper/z_libpd.c:236
> 236	  pd_typedmess(dest, gensym(msg), n, v);
> (gdb) frame 6
> #6  0x0000000100096fb8 in libpd_finish_message (recv=<value temporarily unavailable, due to optimizations>, msg=0x100000f67 "dsp") at z_libpd.c:562
> 236	  pd_typedmess(dest, gensym(msg), n, v);
> (gdb) frame 7
> #7  0x0000000100000b8f in main ()
> 
> --------
> Dan Wilcox
> @danomatika
> danomatika.com <http://danomatika.com/>
> robotcowboy.com <http://robotcowboy.com/>
> > On Apr 22, 2015, at 5:12 PM, Miller Puckette <msp at ucsd.edu> wrote:
> > 
> > OK ... I think I fixed it... pull newest from git and try.
> > 
> > thanks
> > M
> > 
> > On Wed, Apr 22, 2015 at 12:35:10PM -0700, Miller Puckette wrote:
> >> Aha - sometimes things crash on OSX because of "minor" buffer overruns that
> >> linux just soldiers past.  I'll break out a mac and try again...
> >> 
> >> M
> >> 
> >> On Wed, Apr 22, 2015 at 03:03:09AM -0400, Dan Wilcox wrote:
> >>> Weird. It crashes for me on OSX when libpd is built with -O3 and the program is built with or without -O3.
> >>> 
> >>> *Note: I just finished reorganizing the libpd samples by language name. If you do a pull, the multi instance test is now located in samples/c/pdtest_multi 
> >>> 
> >>> Rebuilding and running it again yields:
> >>> 
> >>> Program received signal EXC_BAD_ACCESS, Could not access memory.
> >>> Reason: 13 at address: 0x0000000000000000
> >>> outlet_float (x=0x3f7ffc2a3f7ffc38, f=0) at m_obj.c:388
> >>> 388	    for (oc = x->o_connections; oc; oc = oc->oc_next)
> >>> 
> >>> #0  outlet_float (x=0x3f7ffc2a3f7ffc38, f=0) at m_obj.c:388
> >>> #1  0x000000010006f0b9 in outlet_bang (x=<value temporarily unavailable, due to optimizations>) at m_obj.c:363
> >>> #2  0x00000001000953f9 in metro_tick (x=0x10021ad90) at x_time.c:162
> >>> #3  0x0000000100071010 in sched_tick () at m_sched.c:418
> >>> #4  0x0000000100096733 in libpd_process_float (ticks=1, inBuffer=<value temporarily unavailable, due to optimizations>, outBuffer=<value temporarily unavailable, due to optimizations>) at z_libpd.c:185
> >>> #5  0x0000000100000d67 in main ()
> >>> 
> >>> some frame detail:
> >>> 
> >>> (gdb) frame 0
> >>> #0  outlet_float (x=0x3f7ffc2a3f7ffc38, f=0) at m_obj.c:388
> >>> 388	    for (oc = x->o_connections; oc; oc = oc->oc_next)
> >>> (gdb) frame 1
> >>> #1  0x000000010006f0b9 in outlet_bang (x=<value temporarily unavailable, due to optimizations>) at m_obj.c:363
> >>> 363	        pd_bang(oc->oc_to);
> >>> (gdb) frame 2
> >>> #2  0x00000001000953f9 in metro_tick (x=0x10021ad90) at x_time.c:162
> >>> 162	    outlet_bang(x->x_obj.ob_outlet);
> >>> (gdb) frame 3
> >>> #3  0x0000000100071010 in sched_tick () at m_sched.c:418
> >>> 418	        (*c->c_fn)(c->c_owner);
> >>> (gdb) frame 4
> >>> #4  0x0000000100096733 in libpd_process_float (ticks=1, inBuffer=<value temporarily unavailable, due to optimizations>, outBuffer=<value temporarily unavailable, due to optimizations>) at z_libpd.c:185
> >>> 185	  PROCESS(,)
> >>> (gdb) frame 5
> >>> #5  0x0000000100000d67 in main ()
> >>> 
> >>> --------
> >>> Dan Wilcox
> >>> @danomatika
> >>> danomatika.com <http://danomatika.com/>
> >>> robotcowboy.com <http://robotcowboy.com/>
> >>>> On Apr 22, 2015, at 12:15 AM, Miller Puckette <msp at ucsd.edu> wrote:
> >>>> 
> >>>> I think it was optimized since I had already made libpd, not from the
> >>>> sampes/.../multi directory.  But anyhow I re-did it as you suggest with
> >>>> the same result....  can't make it fail...
> >>>> 
> >>>> cheers
> >>>> M
> >>>> 
> >>>> On Wed, Apr 22, 2015 at 12:03:28AM -0400, Dan Wilcox wrote:
> >>>>> You ran it without the optimizations since I added the debug option. Remove DEBUG=true from line 33 in the Makefile: https://github.com/libpd/libpd/blob/master/samples/c_samples/multi/Makefile#L33 <https://github.com/libpd/libpd/blob/master/samples/c_samples/multi/Makefile#L33> and do a full clean before rebuilding:
> >>>>> 
> >>>>> cd ../../../ && make clobber && cd - && make
> >>>>> --------
> >>>>> Dan Wilcox
> >>>>> @danomatika
> >>>>> danomatika.com <http://danomatika.com/>
> >>>>> robotcowboy.com <http://robotcowboy.com/>
> >>>>>> On Apr 21, 2015, at 11:57 PM, Miller Puckette <msp at ucsd.edu> wrote:
> >>>>>> 
> >>>>>> Hi Dan et al -
> >>>>>> 
> >>>>>> I gave this a try:
> >>>>>> 
> >>>>>> git clone https://github.com/libpd/libpd.git
> >>>>>> 
> >>>>>> [copies pd sources into libpd/pure-data]
> >>>>>> 
> >>>>>> cd libpd
> >>>>>> make
> >>>>>> 
> >>>>>> cd samples/c_samples/multi/
> >>>>>> make
> >>>>>> ./multi_pdtest multi_test.pd `pwd`
> >>>>>> 
> >>>>>> and got output:
> >>>>>> 
> >>>>>> print: 0
> >>>>>> 1003-frequency: bang
> >>>>>> print: 0
> >>>>>> 1004-frequency: bang
> >>>>>> 1003-frequency: 1
> >>>>>> 1004-frequency: 2
> >>>>>> 1.000000 1.000000 0.999999 0.999999 0.999998 0.999998 0.999997 0.999997 
> >>>>>> 1.000000 1.000000 0.999998 0.999998 0.999996 0.999996 0.999995 0.999995 
> >>>>>> print: 1
> >>>>>> 0.999944 0.999944 0.999943 0.999943 0.999942 0.999942 0.999941 0.999941 
> >>>>>> print: 1
> >>>>>> 0.999815 0.999815 0.999810 0.999810 0.999804 0.999804 0.999799 0.999799 
> >>>>>> print: 2
> >>>>>> print: 2
> >>>>>> 
> >>>>>> This on Fedora 21, 64 bits, Intel hardware.  
> >>>>>> 
> >>>>>> I guess something subtle is happening, maybe in Pd and unrelated to libpd?
> >>>>>> 
> >>>>>> cheers
> >>>>>> Miller
> >>>>>> 
> >>>>>> On Tue, Apr 21, 2015 at 06:00:15PM -0400, Dan Wilcox wrote:
> >>>>>>> Howdy Miller,
> >>>>>>> 
> >>>>>>> Following up from the dev list last year, I added your multi instance test to the c samples included with libpd: https://github.com/libpd/libpd/tree/master/samples/c_samples/multi <https://github.com/libpd/libpd/tree/master/samples/c_samples/multi>
> >>>>>>> 
> >>>>>>> The one thing I want to double check is the changes to z_libpd.c you mentioned in http://lists.puredata.info/pipermail/pd-dev/2014-05/019832.html: <http://lists.puredata.info/pipermail/pd-dev/2014-05/019832.html:>
> >>>>>>> 
> >>>>>>>> Here's how I modified libpd_wrapper/z_libpd.c:
> >>>>>>>> 
> >>>>>>>> 55d54
> >>>>>>>> <   sys_time = 0;
> >>>>>>>> 110c109
> >>>>>>>> <   sched_tick(sys_time + sys_time_per_dsp_tick);
> >>>>>>>> ---
> >>>>>>>>> 
> >>>>>>>> sched_tick();
> >>>>>>>> 
> >>>>>>>> 130c129
> >>>>>>>> <     sched_tick(sys_time + sys_time_per_dsp_tick); \
> >>>>>>>> ---
> >>>>>>>>> 
> >>>>>>>>   sched_tick(); \
> >>>>>>> 
> >>>>>>> 
> >>>>>>> Currently, that line is https://github.com/libpd/libpd/blob/master/libpd_wrapper/z_libpd.c#L171 <https://github.com/libpd/libpd/blob/master/libpd_wrapper/z_libpd.c#L171> and I’m getting a segfault if I replace it with sched_tick(); AND set gcc optimization to -O3
> >>>>>>> 
> >>>>>>> Here’s a gdb backtrace:
> >>>>>>> 
> >>>>>>> #0  0x0000000100091f2f in outlet_float (x=0x3f7ffc2a3f7ffc38, f=0.999937057) at m_obj.c:388
> >>>>>>> #1  0x00000001000ac572 in pdfloat_bang (x=0x10021ac20) at x_connective.c:89
> >>>>>>> #2  0x0000000100093d58 in pd_bang (x=0x10021ac20) at m_pd.c:267
> >>>>>>> #3  0x0000000100091ddd in outlet_bang (x=0x10021ae20) at m_obj.c:363
> >>>>>>> #4  0x00000001000c45e4 in metro_tick (x=0x10021ada0) at x_time.c:162
> >>>>>>> #5  0x0000000100095021 in sched_tick () at m_sched.c:418
> >>>>>>> #6  0x00000001000c5d4d in libpd_process_float (ticks=1, inBuffer=0x7fff5fbffa50, outBuffer=0x7fff5fbff750) at z_libpd.c:173
> >>>>>>> #7  0x0000000100000d18 in main ()
> >>>>>>> 
> >>>>>>> If I don’t optimize, it works fine:
> >>>>>>> 
> >>>>>>> print: 0
> >>>>>>> 1003-frequency: bang
> >>>>>>> print: 0
> >>>>>>> 1004-frequency: bang
> >>>>>>> 1003-frequency: 1
> >>>>>>> 1004-frequency: 2
> >>>>>>> 1.000000 1.000000 0.999999 0.999999 0.999998 0.999998 0.999997 0.999997 
> >>>>>>> 1.000000 1.000000 0.999998 0.999998 0.999996 0.999996 0.999995 0.999995 
> >>>>>>> print: 1
> >>>>>>> 0.999944 0.999944 0.999943 0.999943 0.999942 0.999942 0.999941 0.999941 
> >>>>>>> print: 1
> >>>>>>> 0.999815 0.999815 0.999810 0.999810 0.999804 0.999804 0.999799 0.999799 
> >>>>>>> print: 2
> >>>>>>> print: 2
> >>>>>>> 
> >>>>>>> --------
> >>>>>>> Dan Wilcox
> >>>>>>> @danomatika
> >>>>>>> danomatika.com <http://danomatika.com/>
> >>>>>>> robotcowboy.com <http://robotcowboy.com/>
> >>>>>>>> On Apr 21, 2015, at 10:56 AM, Kjetil Matheussen <k.s.matheussen at gmail.com> wrote:
> >>>>>>>> 
> >>>>>>>> But for libpd, are you sure you need to add anything? Can't just the user
> >>>>>>>> call the pdinstance_new and pd_setinstance functions directly?
> >>>>>>>> 
> >>>>>>>> http://lists.puredata.info/pipermail/pd-dev/2014-05/019832.html <http://lists.puredata.info/pipermail/pd-dev/2014-05/019832.html>
> >>>>>>>> 
> >>>>>>>> 
> >>>>>>>> (BTW. When I wrote about libpds, I hadn't forgotten about the support for pd instances,
> >>>>>>>> but since I didn't have all details in my head then, I didn't mention it. I should have though.)
> >>>>>>>> 
> >>>>>>>> 
> >>>>>>>> On Tue, Apr 21, 2015 at 4:42 PM, Dan Wilcox <danomatika at gmail.com <mailto:danomatika at gmail.com>> wrote:
> >>>>>>>> This should be possible with the current version of libpd which includes Miller’s multiple instance updates, see http://lists.puredata.info/pipermail/pd-dev/2014-05/019839.html <http://lists.puredata.info/pipermail/pd-dev/2014-05/019839.html>
> >>>>>>>> 
> >>>>>>>> I just haven’t gotten around to adding libpd-specific wrapper functions for this yet, but Miller provides code in that dev list exchange.
> >>>>>>>> 
> >>>>>>>> --------
> >>>>>>>> Dan Wilcox
> >>>>>>>> @danomatika
> >>>>>>>> danomatika.com <http://danomatika.com/>
> >>>>>>>> robotcowboy.com <http://robotcowboy.com/>
> >>>>>>>>> On Apr 21, 2015, at 6:00 AM, pd-dev-request at lists.iem.at <mailto:pd-dev-request at lists.iem.at> wrote:
> >>>>>>>>> 
> >>>>>>>>> From: Oliver Greschke <info at o-g-sus.de <mailto:info at o-g-sus.de>>
> >>>>>>>>> Subject: [PD-dev] Can somebody help to create a desktop / VST / AU version of a PD / libPD / app ?
> >>>>>>>>> Date: April 21, 2015 at 3:15:44 AM EDT
> >>>>>>>>> To: pd-dev at lists.iem.at <mailto:pd-dev at lists.iem.at>
> >>>>>>>>> 
> >>>>>>>>> 
> >>>>>>>>> Hi,
> >>>>>>>>> I am the creator of the Elastic Drums iOS app (with great PD help from Matt Davey).
> >>>>>>>>> It’s made with PureData, libPD and Objective-C.
> >>>>>>>>> I got asked a couple of times now, if there will be ever a standalone desktop version or even better Plugin (VST, AU) version of the app.
> >>>>>>>>> 
> >>>>>>>>> As far as I know, there are not ready to use workarounds to do so. Which is sad, because I can imagine a lot of fantastic plugins emerging from PD
> >>>>>>>>> 
> >>>>>>>>> Has somebody here some experience with doing such ports?
> >>>>>>>>> Then please contact me.
> >>>>>>>>> 
> >>>>>>>>> Cheers,
> >>>>>>>>> Oliver
> >>>>>>>>> 
> >>>>>>>>> info at o-g-sus.de <mailto:info at o-g-sus.de>
> >>>>>>>> 
> >>>>>>>> _______________________________________________
> >>>>>>>> Pd-dev mailing list
> >>>>>>>> Pd-dev at lists.iem.at <mailto:Pd-dev at lists.iem.at>
> >>>>>>>> http://lists.puredata.info/listinfo/pd-dev <http://lists.puredata.info/listinfo/pd-dev>
> >>>>>>>> 
> >>>>>>>> 
> >>>>>>> 
> >>>>>> 
> >>>>>>> _______________________________________________
> >>>>>>> Pd-dev mailing list
> >>>>>>> Pd-dev at lists.iem.at
> >>>>>>> http://lists.puredata.info/listinfo/pd-dev
> >>>>>> 
> >>>>> 
> >>> 
> >> 
> >> _______________________________________________
> >> Pd-dev mailing list
> >> Pd-dev at lists.iem.at
> >> http://lists.puredata.info/listinfo/pd-dev
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