Re: [Jack-Devel] jconvolver and OSX
On Mon, Feb 28, 2011 at 12:12:27PM +0100, Stéphane Letz wrote:
> But then what about this message?
>
> http://tech.groups.yahoo.com/group/jackosx/message/3305
>
> Le 28 févr. 2011 à 12:07, Fons Adriaensen a écrit :
>
> > On Mon, Feb 28, 2011 at 11:36:33AM +0100, Natasha Barrett wrote:
> >
> >
> >> I've been trying to install jconvolver under OSX (10.5 / 10.6). Does
> >> anyone know if this is at all possible, and if so, any hints?
> >
> > It is not possible ATM because zita-convolver uses 'anonymous'
> > semaphores (sem_t, semaphore.h) which are not available in OSX.
>
> Why not using named semaphore ? (available on OSX)
requires housekeeping. thats annoying.
anyways... maybe you can just adapt from ardours semaphore:
/*
Copyright (C) 2010 Paul Davis
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include "pbd/semutils.h"
#include "pbd/failed_constructor.h"
using namespace PBD;
ProcessSemaphore::ProcessSemaphore (const char* name, int val)
{
#ifdef __APPLE__
if ((_sem = sem_open (name, O_CREAT, 0600, val)) == (sem_t*) SEM_FAILED) {
throw failed_constructor ();
}
/* this semaphore does not exist for IPC */
if (sem_unlink (name)) {
throw failed_constructor ();
}
#else
if (sem_init (&_sem, 0, val)) {
throw failed_constructor ();
}
#endif
}
ProcessSemaphore::~ProcessSemaphore ()
{
#ifdef __APPLE__
sem_close (ptr_to_sem());
#endif
}
>
> >
> > I've been told you can have the same functionality in OSX using
> > the Mach semaphores. If anyone can provide example source code to
> > do this I could abstract that and Linux's sem_t into a C++ class
> > and make the zita-convolver code portable to OSX.
> >
> > It's probably a trivial thing to do for anyone familiar with
> > this sort of stuff.
> >
> > Ciao,
>
> Stéphane
>
>
>
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--
torben Hohn
1298892117.14980_0.ltw:2,a <20110228112132.GF2977 at siel dot b>