src/notify.c

   1 /*
   2  * Copyright (C) 2003-2010 The Music Player Daemon Project
   3  * http://www.musicpd.org
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; either version 2 of the License, or
   8  * (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License along
  16  * with this program; if not, write to the Free Software Foundation, Inc.,
  17  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  18  */
  19
  20 #include "config.h"
  21 #include "notify.h"
  22
  23 void notify_init(struct notify *notify)
  24 {
  25         notify->mutex = g_mutex_new();
  26         notify->cond = g_cond_new();
  27         notify->pending = false;
  28 }
  29
  30 void notify_deinit(struct notify *notify)
  31 {
  32         g_mutex_free(notify->mutex);
  33         g_cond_free(notify->cond);
  34 }
  35
  36 void notify_wait(struct notify *notify)
  37 {
  38         g_mutex_lock(notify->mutex);
  39         while (!notify->pending)
  40                 g_cond_wait(notify->cond, notify->mutex);
  41         notify->pending = false;
  42         g_mutex_unlock(notify->mutex);
  43 }
  44
  45 void notify_signal(struct notify *notify)
  46 {
  47         g_mutex_lock(notify->mutex);
  48         notify->pending = true;
  49         g_cond_signal(notify->cond);
  50         g_mutex_unlock(notify->mutex);
  51 }