2 This file is part of PulseAudio.
4 Copyright 2004-2006 Lennart Poettering
6 PulseAudio is free software; you can redistribute it and/or modify
7 it under the terms of the GNU Lesser General Public License as published
8 by the Free Software Foundation; either version 2.1 of the License,
9 or (at your option) any later version.
11 PulseAudio is distributed in the hope that it will be useful, but
12 WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 General Public License for more details.
16 You should have received a copy of the GNU Lesser General Public License
17 along with PulseAudio; if not, see <http://www.gnu.org/licenses/>.
24 #include <pulsecore/macro.h>
25 #include <pulsecore/atomic.h>
29 static pa_atomic_t stdio_inuse = PA_ATOMIC_INIT(0);
31 int pa_stdio_acquire(void) {
32 return pa_atomic_cmpxchg(&stdio_inuse, 0, 1) ? 0 : -1;
35 void pa_stdio_release(void) {
36 pa_assert_se(pa_atomic_cmpxchg(&stdio_inuse, 1, 0));