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 26 typedef 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. */ 33 pa_mutex* pa_mutex_new(bool recursive, bool inherit_priority); 34 35 void pa_mutex_free(pa_mutex *m); 36 void pa_mutex_lock(pa_mutex *m); 37 bool pa_mutex_try_lock(pa_mutex *m); 38 void pa_mutex_unlock(pa_mutex *m); 39 40 typedef struct pa_cond pa_cond; 41 42 pa_cond *pa_cond_new(void); 43 void pa_cond_free(pa_cond *c); 44 void pa_cond_signal(pa_cond *c, int broadcast); 45 int pa_cond_wait(pa_cond *c, pa_mutex *m); 46 47 /* Static mutexes are basically just atomically updated pointers to pa_mutex objects */ 48 49 typedef 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 55 pa_mutex* pa_static_mutex_get(pa_static_mutex *m, bool recursive, bool inherit_priority); 56 57 #endif 58