1 #ifndef foopulsesemaphorehfoo 2 #define foopulsesemaphorehfoo 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_semaphore pa_semaphore; 27 28 pa_semaphore* pa_semaphore_new(unsigned value); 29 void pa_semaphore_free(pa_semaphore *m); 30 31 void pa_semaphore_post(pa_semaphore *m); 32 void pa_semaphore_wait(pa_semaphore *m); 33 34 /* Static semaphores are basically just atomically updated pointers to 35 * pa_semaphore objects */ 36 37 typedef struct pa_static_semaphore { 38 pa_atomic_ptr_t ptr; 39 } pa_static_semaphore; 40 41 #define PA_STATIC_SEMAPHORE_INIT { PA_ATOMIC_PTR_INIT(NULL) } 42 43 /* When you call this make sure to pass always the same value parameter! */ 44 pa_semaphore* pa_static_semaphore_get(pa_static_semaphore *m, unsigned value); 45 46 #endif 47