1#ifndef foopulsemutexhfoo
2#define foopulsemutexhfoo
3
4/***
5  This file is part of PulseAudio.
6
7  Copyright 2006 Lennart Poettering
8
9  PulseAudio is free software; you can redistribute it and/or modify
10  it under the terms of the GNU Lesser General Public License as
11  published by the Free Software Foundation; either version 2.1 of the
12  License, or (at your option) any later version.
13
14  PulseAudio is distributed in the hope that it will be useful, but
15  WITHOUT ANY WARRANTY; without even the implied warranty of
16  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17  General Public License for more details.
18
19  You should have received a copy of the GNU Lesser General Public
20  License along with PulseAudio; if not, see <http://www.gnu.org/licenses/>.
21***/
22
23#include <pulsecore/macro.h>
24#include <pulsecore/atomic.h>
25
26typedef struct pa_mutex pa_mutex;
27
28/* Please think twice before enabling priority inheritance. This is no
29 * magic wand! Use it only when the potentially prioritized threads are
30 * good candidates for it. Don't use this blindly! Also, note that
31 * only very few operating systems actually implement this, hence this
32 * is merely a hint. */
33pa_mutex* pa_mutex_new(bool recursive, bool inherit_priority);
34
35void pa_mutex_free(pa_mutex *m);
36void pa_mutex_lock(pa_mutex *m);
37bool pa_mutex_try_lock(pa_mutex *m);
38void pa_mutex_unlock(pa_mutex *m);
39
40typedef struct pa_cond pa_cond;
41
42pa_cond *pa_cond_new(void);
43void pa_cond_free(pa_cond *c);
44void pa_cond_signal(pa_cond *c, int broadcast);
45int pa_cond_wait(pa_cond *c, pa_mutex *m);
46
47/* Static mutexes are basically just atomically updated pointers to pa_mutex objects */
48
49typedef struct pa_static_mutex {
50    pa_atomic_ptr_t ptr;
51} pa_static_mutex;
52
53#define PA_STATIC_MUTEX_INIT { PA_ATOMIC_PTR_INIT(NULL) }
54
55pa_mutex* pa_static_mutex_get(pa_static_mutex *m, bool recursive, bool inherit_priority);
56
57#endif
58