/* 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(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(Notify *notify) { pthread_mutex_lock(¬ify->mutex); } void notify_leave(Notify *notify) { pthread_mutex_unlock(¬ify->mutex); } void notify_wait(Notify *notify) { if (!notify->pending) pthread_cond_wait(¬ify->cond, ¬ify->mutex); notify->pending = 0; } void notify_signal(Notify *notify) { notify->pending = 1; pthread_cond_signal(¬ify->cond); } void notify_signal_sync(Notify *notify) { pthread_mutex_lock(¬ify->mutex); notify_signal(notify); pthread_mutex_unlock(¬ify->mutex); }