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/***
This file is part of PulseAudio.
Copyright 2004-2006 Lennart Poettering
PulseAudio is free software; you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published
by the Free Software Foundation; either version 2.1 of the License,
or (at your option) any later version.
PulseAudio 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 Lesser General Public License
along with PulseAudio; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
USA.
***/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <pulsecore/macro.h>
#include <pulsecore/atomic.h>
#include "sioman.h"
static pa_atomic_t stdio_inuse = PA_ATOMIC_INIT(0);
int pa_stdio_acquire(void) {
return pa_atomic_cmpxchg(&stdio_inuse, 0, 1) ? 0 : -1;
}
void pa_stdio_release(void) {
pa_assert_se(pa_atomic_cmpxchg(&stdio_inuse, 1, 0));
}
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