153a5a1b3Sopenharmony_ci/*** 253a5a1b3Sopenharmony_ci This file is part of PulseAudio. 353a5a1b3Sopenharmony_ci 453a5a1b3Sopenharmony_ci Copyright 2004-2006 Lennart Poettering 553a5a1b3Sopenharmony_ci 653a5a1b3Sopenharmony_ci PulseAudio is free software; you can redistribute it and/or modify 753a5a1b3Sopenharmony_ci it under the terms of the GNU Lesser General Public License as published 853a5a1b3Sopenharmony_ci by the Free Software Foundation; either version 2.1 of the License, 953a5a1b3Sopenharmony_ci or (at your option) any later version. 1053a5a1b3Sopenharmony_ci 1153a5a1b3Sopenharmony_ci PulseAudio is distributed in the hope that it will be useful, but 1253a5a1b3Sopenharmony_ci WITHOUT ANY WARRANTY; without even the implied warranty of 1353a5a1b3Sopenharmony_ci MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 1453a5a1b3Sopenharmony_ci General Public License for more details. 1553a5a1b3Sopenharmony_ci 1653a5a1b3Sopenharmony_ci You should have received a copy of the GNU Lesser General Public License 1753a5a1b3Sopenharmony_ci along with PulseAudio; if not, see <http://www.gnu.org/licenses/>. 1853a5a1b3Sopenharmony_ci***/ 1953a5a1b3Sopenharmony_ci 2053a5a1b3Sopenharmony_ci#ifdef HAVE_CONFIG_H 2153a5a1b3Sopenharmony_ci#include <config.h> 2253a5a1b3Sopenharmony_ci#endif 2353a5a1b3Sopenharmony_ci 2453a5a1b3Sopenharmony_ci#include <pulsecore/macro.h> 2553a5a1b3Sopenharmony_ci#include <pulsecore/atomic.h> 2653a5a1b3Sopenharmony_ci 2753a5a1b3Sopenharmony_ci#include "sioman.h" 2853a5a1b3Sopenharmony_ci 2953a5a1b3Sopenharmony_cistatic pa_atomic_t stdio_inuse = PA_ATOMIC_INIT(0); 3053a5a1b3Sopenharmony_ci 3153a5a1b3Sopenharmony_ciint pa_stdio_acquire(void) { 3253a5a1b3Sopenharmony_ci return pa_atomic_cmpxchg(&stdio_inuse, 0, 1) ? 0 : -1; 3353a5a1b3Sopenharmony_ci} 3453a5a1b3Sopenharmony_ci 3553a5a1b3Sopenharmony_civoid pa_stdio_release(void) { 3653a5a1b3Sopenharmony_ci pa_assert_se(pa_atomic_cmpxchg(&stdio_inuse, 1, 0)); 3753a5a1b3Sopenharmony_ci} 38