1 files changed, 142 insertions, 0 deletions
diff --git a/src/pulsecore/mutex-posix.c b/src/pulsecore/mutex-posix.c
new file mode 100644
index 00000000..6ac98484
--- /dev/null
+++ b/src/pulsecore/mutex-posix.c
@@ -0,0 +1,142 @@
+/* $Id$ */
+
+/***
+  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 <pthread.h>
+#include <errno.h>
+
+#include <pulse/xmalloc.h>
+#include <pulsecore/macro.h>
+#include <pulsecore/log.h>
+#include <pulsecore/core-error.h>
+
+#include "mutex.h"
+
+struct pa_mutex {
+    pthread_mutex_t mutex;
+};
+
+struct pa_cond {
+    pthread_cond_t cond;
+};
+
+pa_mutex* pa_mutex_new(pa_bool_t recursive, pa_bool_t inherit_priority) {
+    pa_mutex *m;
+    pthread_mutexattr_t attr;
+    int r;
+
+    pa_assert_se(pthread_mutexattr_init(&attr) == 0);
+
+    if (recursive)
+        pa_assert_se(pthread_mutexattr_settype(&attr, PTHREAD_MUTEX_RECURSIVE) == 0);
+
+#ifdef HAVE_PTHREAD_PRIO_INHERIT
+    if (inherit_priority)
+        pa_assert_se(pthread_mutexattr_setprotocol(&attr, PTHREAD_PRIO_INHERIT) == 0);
+#endif
+
+    m = pa_xnew(pa_mutex, 1);
+
+#ifndef HAVE_PTHREAD_PRIO_INHERIT
+    pa_assert_se(pthread_mutex_init(&m->mutex, &attr) == 0);
+
+#else
+    if ((r = pthread_mutex_init(&m->mutex, &attr))) {
+
+        /* If this failed, then this was probably due to non-available
+         * priority inheritance. In which case we fall back to normal
+         * mutexes. */
+        pa_assert(r == ENOTSUP && inherit_priority);
+
+        pa_assert_se(pthread_mutexattr_setprotocol(&attr, PTHREAD_PRIO_NONE) == 0);
+        pa_assert_se(pthread_mutex_init(&m->mutex, &attr) == 0);
+    }
+#endif
+
+    return m;
+}
+
+void pa_mutex_free(pa_mutex *m) {
+    pa_assert(m);
+
+    pa_assert_se(pthread_mutex_destroy(&m->mutex) == 0);
+    pa_xfree(m);
+}
+
+void pa_mutex_lock(pa_mutex *m) {
+    pa_assert(m);
+
+    pa_assert_se(pthread_mutex_lock(&m->mutex) == 0);
+}
+
+pa_bool_t pa_mutex_try_lock(pa_mutex *m) {
+    int r;
+    pa_assert(m);
+
+    if ((r = pthread_mutex_trylock(&m->mutex)) != 0) {
+        pa_assert(r == EBUSY);
+        return FALSE;
+    }
+
+    return TRUE;
+}
+
+void pa_mutex_unlock(pa_mutex *m) {
+    pa_assert(m);
+
+    pa_assert_se(pthread_mutex_unlock(&m->mutex) == 0);
+}
+
+pa_cond *pa_cond_new(void) {
+    pa_cond *c;
+
+    c = pa_xnew(pa_cond, 1);
+    pa_assert_se(pthread_cond_init(&c->cond, NULL) == 0);
+    return c;
+}
+
+void pa_cond_free(pa_cond *c) {
+    pa_assert(c);
+
+    pa_assert_se(pthread_cond_destroy(&c->cond) == 0);
+    pa_xfree(c);
+}
+
+void pa_cond_signal(pa_cond *c, int broadcast) {
+    pa_assert(c);
+
+    if (broadcast)
+        pa_assert_se(pthread_cond_broadcast(&c->cond) == 0);
+    else
+        pa_assert_se(pthread_cond_signal(&c->cond) == 0);
+}
+
+int pa_cond_wait(pa_cond *c, pa_mutex *m) {
+    pa_assert(c);
+    pa_assert(m);
+
+    return pthread_cond_wait(&c->cond, &m->mutex);
+}