/*
 * \brief  Timer session interface
 * \author Norman Feske
 * \date   2006-08-15
 */

/*
 * Copyright (C) 2006-2013 Genode Labs GmbH
 *
 * This file is part of the Genode OS framework, which is distributed
 * under the terms of the GNU General Public License version 2.
 */

#ifndef _INCLUDE__TIMER_SESSION__TIMER_SESSION_H_
#define _INCLUDE__TIMER_SESSION__TIMER_SESSION_H_

#include <session/session.h>

namespace Timer {

	struct Session : Genode::Session
	{
		static const char *service_name() { return "Timer"; }

		virtual ~Session() { }

		/**
		 * Sleep number of milliseconds
		 */
		virtual void msleep(unsigned ms) = 0;

		/**
		 * Return number of elapsed milliseconds since session creation
		 */
		virtual unsigned long elapsed_ms() const
		{
			/*
			 * XXX Remove default implementation by implementing the
			 *     interface in all timer variants.
			 */
			return 0; }


		/*********************
		 ** RPC declaration **
		 *********************/

		GENODE_RPC(Rpc_msleep, void, msleep, unsigned);
		GENODE_RPC(Rpc_elapsed_ms, unsigned long, elapsed_ms);

		GENODE_RPC_INTERFACE(Rpc_msleep, Rpc_elapsed_ms);
	};
}

#endif /* _INCLUDE__TIMER_SESSION__TIMER_SESSION_H_ */