a3e3d2c950
"idle" waits until something noteworthy happens on the server, e.g. song change, playlist modified, database updated. This allows clients to keep up to date without polling.
57 lines
1.4 KiB
C
57 lines
1.4 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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/*
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* Support library for the "idle" command.
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*
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*/
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#include "idle.h"
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#include "main_notify.h"
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#include <assert.h>
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#include <pthread.h>
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static unsigned idle_flags;
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static pthread_mutex_t idle_mutex = PTHREAD_MUTEX_INITIALIZER;
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void
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idle_add(unsigned flags)
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{
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assert(flags != 0);
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pthread_mutex_lock(&idle_mutex);
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idle_flags |= flags;
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pthread_mutex_unlock(&idle_mutex);
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wakeup_main_task();
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}
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unsigned
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idle_get(void)
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{
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unsigned flags;
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pthread_mutex_lock(&idle_mutex);
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flags = idle_flags;
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idle_flags = 0;
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pthread_mutex_unlock(&idle_mutex);
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return flags;
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}
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