diff options
author | Lennart Poettering <lennart@poettering.net> | 2007-10-28 19:13:50 +0000 |
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committer | Lennart Poettering <lennart@poettering.net> | 2007-10-28 19:13:50 +0000 |
commit | a67c21f093202f142438689d3f7cfbdf4ea82eea (patch) | |
tree | 5c3295037f033904bc11ab8b3adae5b7331101e9 /src/pulsecore/semaphore-posix.c | |
parent | 6687dd013169fd8436aa1b45ccdacff074a40d05 (diff) |
merge 'lennart' branch back into trunk.
git-svn-id: file:///home/lennart/svn/public/pulseaudio/trunk@1971 fefdeb5f-60dc-0310-8127-8f9354f1896f
Diffstat (limited to 'src/pulsecore/semaphore-posix.c')
-rw-r--r-- | src/pulsecore/semaphore-posix.c | 69 |
1 files changed, 69 insertions, 0 deletions
diff --git a/src/pulsecore/semaphore-posix.c b/src/pulsecore/semaphore-posix.c new file mode 100644 index 00000000..750c2afc --- /dev/null +++ b/src/pulsecore/semaphore-posix.c @@ -0,0 +1,69 @@ +/* $Id$ */ + +/*** + This file is part of PulseAudio. + + Copyright 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 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 <errno.h> +#include <pthread.h> +#include <semaphore.h> + +#include <pulse/xmalloc.h> +#include <pulsecore/macro.h> + +#include "semaphore.h" + +struct pa_semaphore { + sem_t sem; +}; + +pa_semaphore* pa_semaphore_new(unsigned value) { + pa_semaphore *s; + + s = pa_xnew(pa_semaphore, 1); + pa_assert_se(sem_init(&s->sem, 0, value) == 0); + return s; +} + +void pa_semaphore_free(pa_semaphore *s) { + pa_assert(s); + pa_assert_se(sem_destroy(&s->sem) == 0); + pa_xfree(s); +} + +void pa_semaphore_post(pa_semaphore *s) { + pa_assert(s); + pa_assert_se(sem_post(&s->sem) == 0); +} + +void pa_semaphore_wait(pa_semaphore *s) { + int ret; + pa_assert(s); + + do { + ret = sem_wait(&s->sem); + } while (ret < 0 && errno == EINTR); + + pa_assert(ret == 0); +} |