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Diffstat (limited to '')
-rw-r--r-- | src/event/IdleMonitor.hxx | 87 |
1 files changed, 87 insertions, 0 deletions
diff --git a/src/event/IdleMonitor.hxx b/src/event/IdleMonitor.hxx new file mode 100644 index 000000000..c8e79eb1d --- /dev/null +++ b/src/event/IdleMonitor.hxx @@ -0,0 +1,87 @@ +/* + * Copyright (C) 2003-2013 The Music Player Daemon Project + * 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., + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + */ + +#ifndef MPD_SOCKET_IDLE_MONITOR_HXX +#define MPD_SOCKET_IDLE_MONITOR_HXX + +#include "check.h" + +#ifndef USE_EPOLL +#include <glib.h> +#endif + +class EventLoop; + +/** + * An event that runs when the EventLoop has become idle, before + * waiting for more events. This class is not thread-safe; all + * methods must be run from EventLoop's thread. + */ +class IdleMonitor { +#ifdef USE_EPOLL + friend class EventLoop; +#endif + + EventLoop &loop; + +#ifdef USE_EPOLL + bool active; +#else + guint source_id; +#endif + +public: +#ifdef USE_EPOLL + IdleMonitor(EventLoop &_loop) + :loop(_loop), active(false) {} +#else + IdleMonitor(EventLoop &_loop) + :loop(_loop), source_id(0) {} +#endif + + ~IdleMonitor() { + Cancel(); + } + + EventLoop &GetEventLoop() const { + return loop; + } + + bool IsActive() const { +#ifdef USE_EPOLL + return active; +#else + return source_id != 0; +#endif + } + + void Schedule(); + void Cancel(); + +protected: + virtual void OnIdle() = 0; + +private: + void Run(); +#ifndef USE_EPOLL + static gboolean Callback(gpointer data); +#endif +}; + +#endif /* MAIN_NOTIFY_H */ |