/*]  Copyright (c) 2009-2010, Charles McGarvey  [**************************
**]  All rights reserved.
*
* vi:ts=4 sw=4 tw=75
*
* Distributable under the terms and conditions of the 2-clause BSD license;
* see the file COPYING for a complete text of the license.
*
**************************************************************************/

#ifndef _MOOF_RUNLOOP_HH_
#define _MOOF_RUNLOOP_HH_

/**
 * \file runloop.hh
 * Thread timer management class.
 */

#include <set>

#include <boost/noncopyable.hpp>

#include <moof/backend.hh>
#include <moof/thread.hh>


namespace moof {


// forward declarations
class timer;
	

/**
 * A runloop is a loop with scheduled timers.
 */
class runloop
{
public:

	/**
	 * Construct a runloop.
	 */
	runloop() :
		stop_(false),
		thread_id_(0) {}

	/**
	 * Deconstruct the runloop.
	 */
	~runloop();


	/**
	 * Start running the runloop.
	 * \return The exit code.
	 */
	int run();

	/**
	 * Stop the runloop.
	 * \param code The exit code.
	 */
	void stop(int code = 0);


	/** Get the runloop of the current thread.
	 * \return The current runloop or 0 if none is running in the current
	 * thread.
	 */
	static runloop* current();


private:

	friend class timer;

	void add_timer(timer* timer);
	void remove_timer(timer* timer);


	bool		stop_;
	int			code_;

	typedef std::set<timer*> timer_table;
	timer_table	timers_;
	timer_table::iterator timers_it_;

#if ENABLE_THREADS
	MOOF_DECLARE_MUTEX(timers_mutex_);
	uint32_t	thread_id_;
#endif


	backend		backend_;
};


} // namespace moof

#endif // _MOOF_RUNLOOP_HH_