Adding upstream version 14.2.upstream/14.2upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 57 insertions, 0 deletions

diff --git a/src/pulsecore/mutex.h b/src/pulsecore/mutex.h
new file mode 100644
index 0000000..9cdd857
--- /dev/null
+++ b/src/pulsecore/mutex.h
@@ -0,0 +1,57 @@
+#ifndef foopulsemutexhfoo
+#define foopulsemutexhfoo
+
+/***
+  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 2.1 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, see <http://www.gnu.org/licenses/>.
+***/
+
+#include <pulsecore/macro.h>
+#include <pulsecore/atomic.h>
+
+typedef struct pa_mutex pa_mutex;
+
+/* Please think twice before enabling priority inheritance. This is no
+ * magic wand! Use it only when the potentially prioritized threads are
+ * good candidates for it. Don't use this blindly! Also, note that
+ * only very few operating systems actually implement this, hence this
+ * is merely a hint. */
+pa_mutex* pa_mutex_new(bool recursive, bool inherit_priority);
+
+void pa_mutex_free(pa_mutex *m);
+void pa_mutex_lock(pa_mutex *m);
+bool pa_mutex_try_lock(pa_mutex *m);
+void pa_mutex_unlock(pa_mutex *m);
+
+typedef struct pa_cond pa_cond;
+
+pa_cond *pa_cond_new(void);
+void pa_cond_free(pa_cond *c);
+void pa_cond_signal(pa_cond *c, int broadcast);
+int pa_cond_wait(pa_cond *c, pa_mutex *m);
+
+/* Static mutexes are basically just atomically updated pointers to pa_mutex objects */
+
+typedef struct pa_static_mutex {
+    pa_atomic_ptr_t ptr;
+} pa_static_mutex;
+
+#define PA_STATIC_MUTEX_INIT { PA_ATOMIC_PTR_INIT(NULL) }
+
+pa_mutex* pa_static_mutex_get(pa_static_mutex *m, bool recursive, bool inherit_priority);
+
+#endif