//

// timer_queue_base.hpp

// ~~~~~~~~~~~~~~~~~~~~

//

// Copyright (c) 2003-2008 Christopher M. Kohlhoff (chris at kohlhoff dot com)

//

// Distributed under the Boost Software License, Version 1.0. (See accompanying

// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)

//



#ifndef BOOST_ASIO_DETAIL_TIMER_QUEUE_BASE_HPP

#define BOOST_ASIO_DETAIL_TIMER_QUEUE_BASE_HPP



#if defined(_MSC_VER) && (_MSC_VER >= 1200)

# pragma once

#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)



#include <boost/asio/detail/push_options.hpp>



#include <boost/asio/detail/socket_types.hpp> // Must come before posix_time.



#include <boost/asio/detail/push_options.hpp>

#include <boost/date_time/posix_time/posix_time_types.hpp>

#include <boost/asio/detail/pop_options.hpp>



#include <boost/asio/detail/noncopyable.hpp>



namespace boost {

namespace asio {

namespace detail {



class timer_queue_base

  : private noncopyable

{

public:

  // Destructor.

  virtual ~timer_queue_base() {}



  // Whether there are no timers in the queue.

  virtual bool empty() const = 0;



  // Get the time to wait until the next timer.

  virtual boost::posix_time::time_duration wait_duration() const = 0;



  // Dispatch all ready timers.

  virtual void dispatch_timers() = 0;



  // Dispatch any pending cancels for timers.

  virtual void dispatch_cancellations() = 0;



  // Destroy timers that are waiting to be cleaned up.

  virtual void cleanup_timers() = 0;



  // Destroy all timers.

  virtual void destroy_timers() = 0;

};



} // namespace detail

} // namespace asio

} // namespace boost



#include <boost/asio/detail/pop_options.hpp>



#endif // BOOST_ASIO_DETAIL_TIMER_QUEUE_BASE_HPP

