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/*
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
}
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