4 This file is part of PulseAudio.
6 Copyright 2006 Lennart Poettering
8 PulseAudio is free software; you can redistribute it and/or modify
9 it under the terms of the GNU Lesser General Public License as published
10 by the Free Software Foundation; either version 2 of the License,
11 or (at your option) any later version.
13 PulseAudio is distributed in the hope that it will be useful, but
14 WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 General Public License for more details.
18 You should have received a copy of the GNU Lesser General Public License
19 along with PulseAudio; if not, write to the Free Software
20 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
30 #include <semaphore.h>
32 #include <pulse/xmalloc.h>
33 #include <pulsecore/macro.h>
35 #include "semaphore.h"
41 pa_semaphore* pa_semaphore_new(unsigned value) {
44 s = pa_xnew(pa_semaphore, 1);
45 pa_assert_se(sem_init(&s->sem, 0, value) == 0);
49 void pa_semaphore_free(pa_semaphore *s) {
51 pa_assert_se(sem_destroy(&s->sem) == 0);
55 void pa_semaphore_post(pa_semaphore *s) {
57 pa_assert_se(sem_post(&s->sem) == 0);
60 void pa_semaphore_wait(pa_semaphore *s) {
65 ret = sem_wait(&s->sem);
66 } while (ret < 0 && errno == EINTR);