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