blob: 9a3ac500a7750939726a1d61fe11b1c13b0a59ec (
plain) (
tree)
|
|
/* the Music Player Daemon (MPD)
* Copyright (C) 2008 Max Kellermann <max@duempel.org>
* This project's homepage is: http://www.musicpd.org
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include "notify.h"
int notify_init(struct notify *notify)
{
int ret;
ret = pthread_mutex_init(¬ify->mutex, NULL);
if (ret != 0)
return ret;
ret = pthread_cond_init(¬ify->cond, NULL);
if (ret != 0) {
pthread_mutex_destroy(¬ify->mutex);
return ret;
}
notify->pending = 0;
return 0;
}
void notify_enter(struct notify *notify)
{
pthread_mutex_lock(¬ify->mutex);
}
void notify_leave(struct notify *notify)
{
pthread_mutex_unlock(¬ify->mutex);
}
void notify_wait(struct notify *notify)
{
if (!notify->pending)
pthread_cond_wait(¬ify->cond, ¬ify->mutex);
notify->pending = 0;
}
void notify_signal(struct notify *notify)
{
notify->pending = 1;
pthread_cond_signal(¬ify->cond);
}
void notify_signal_sync(struct notify *notify)
{
pthread_mutex_lock(¬ify->mutex);
notify_signal(notify);
pthread_mutex_unlock(¬ify->mutex);
}
|