code.delx.au - pulseaudio/blob - src/pulsecore/mutex.h

   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 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, write to the Free Software
  21   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
  22   USA.
  23 ***/
  24
  25 #include <pulsecore/macro.h>
  26 #include <pulsecore/atomic.h>
  27
  28 typedef struct pa_mutex pa_mutex;
  29
  30 /* Please think twice before enabling priority inheritance. This is no
  31  * magic wand! Use it only when the potentially priorized threads are
  32  * good candidates for it. Don't use this blindly! Also, note that
  33  * only very few operating systems actually implement this, hence this
  34  * is merely a hint. */
  35 pa_mutex* pa_mutex_new(pa_bool_t recursive, pa_bool_t inherit_priority);
  36
  37 void pa_mutex_free(pa_mutex *m);
  38 void pa_mutex_lock(pa_mutex *m);
  39 pa_bool_t pa_mutex_try_lock(pa_mutex *m);
  40 void pa_mutex_unlock(pa_mutex *m);
  41
  42 typedef struct pa_cond pa_cond;
  43
  44 pa_cond *pa_cond_new(void);
  45 void pa_cond_free(pa_cond *c);
  46 void pa_cond_signal(pa_cond *c, int broadcast);
  47 int pa_cond_wait(pa_cond *c, pa_mutex *m);
  48
  49 typedef struct pa_static_mutex {
  50     pa_atomic_ptr_t ptr;
  51 } pa_static_mutex;
  52
  53 pa_mutex* pa_static_mutex_get(pa_static_mutex *m, pa_bool_t recursive, pa_bool_t inherit_priority);
  54
  55 #endif