From a3e3d2c9506d17b3e19e205535ec263ee75178c9 Mon Sep 17 00:00:00 2001 From: Max Kellermann Date: Tue, 14 Oct 2008 22:38:14 +0200 Subject: command: added command "idle" "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. --- src/idle.c | 56 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 56 insertions(+) create mode 100644 src/idle.c (limited to 'src/idle.c') diff --git a/src/idle.c b/src/idle.c new file mode 100644 index 000000000..c779d0a91 --- /dev/null +++ b/src/idle.c @@ -0,0 +1,56 @@ +/* the Music Player Daemon (MPD) + * Copyright (C) 2008 Max Kellermann + * 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 + */ + +/* + * Support library for the "idle" command. + * + */ + +#include "idle.h" +#include "main_notify.h" + +#include +#include + +static unsigned idle_flags; +static pthread_mutex_t idle_mutex = PTHREAD_MUTEX_INITIALIZER; + +void +idle_add(unsigned flags) +{ + assert(flags != 0); + + pthread_mutex_lock(&idle_mutex); + idle_flags |= flags; + pthread_mutex_unlock(&idle_mutex); + + wakeup_main_task(); +} + +unsigned +idle_get(void) +{ + unsigned flags; + + pthread_mutex_lock(&idle_mutex); + flags = idle_flags; + idle_flags = 0; + pthread_mutex_unlock(&idle_mutex); + + return flags; +} -- cgit v1.2.3