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

   1 #ifndef foopulseoncehfoo
   2 #define foopulseoncehfoo
   3
   4 /* $Id$ */
   5
   6 /***
   7   This file is part of PulseAudio.
   8
   9   Copyright 2006 Lennart Poettering
  10
  11   PulseAudio is free software; you can redistribute it and/or modify
  12   it under the terms of the GNU Lesser General Public License as
  13   published by the Free Software Foundation; either version 2 of the
  14   License, or (at your option) any later version.
  15
  16   PulseAudio is distributed in the hope that it will be useful, but
  17   WITHOUT ANY WARRANTY; without even the implied warranty of
  18   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  19   General Public License for more details.
  20
  21   You should have received a copy of the GNU Lesser General Public
  22   License along with PulseAudio; if not, write to the Free Software
  23   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
  24   USA.
  25 ***/
  26
  27 #include <pulsecore/mutex.h>
  28
  29 typedef struct pa_once {
  30     unsigned int once_value;
  31     pa_mutex *mutex;
  32 } pa_once_t;
  33
  34 #define PA_ONCE_INIT { .once_value = 0, .mutex = NULL }
  35
  36 typedef void (*pa_once_func_t) (void);
  37
  38 void pa_once(pa_once_t *o, pa_once_func_t f);
  39
  40 #endif