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// detail/timer_queue_ptime.hpp
// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~
// Copyright (c) 2003-2017 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


#if defined(_MSC_VER) && (_MSC_VER >= 1200)
# pragma once
#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)

#include <boost/asio/time_traits.hpp>
#include <boost/asio/detail/timer_queue.hpp>

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


namespace boost {
namespace asio {
namespace detail {

struct forwarding_posix_time_traits : time_traits<boost::posix_time::ptime> {};

// Template specialisation for the commonly used instantation.
template <>
class timer_queue<time_traits<boost::posix_time::ptime> >
  : public timer_queue_base
  // The time type.
  typedef boost::posix_time::ptime time_type;

  // The duration type.
  typedef boost::posix_time::time_duration duration_type;

  // Per-timer data.
  typedef timer_queue<forwarding_posix_time_traits>::per_timer_data

  // Constructor.
  BOOST_ASIO_DECL timer_queue();

  // Destructor.
  BOOST_ASIO_DECL virtual ~timer_queue();

  // Add a new timer to the queue. Returns true if this is the timer that is
  // earliest in the queue, in which case the reactor's event demultiplexing
  // function call may need to be interrupted and restarted.
  BOOST_ASIO_DECL bool enqueue_timer(const time_type& time,
      per_timer_data& timer, wait_op* op);

  // Whether there are no timers in the queue.
  BOOST_ASIO_DECL virtual bool empty() const;

  // Get the time for the timer that is earliest in the queue.
  BOOST_ASIO_DECL virtual long wait_duration_msec(long max_duration) const;

  // Get the time for the timer that is earliest in the queue.
  BOOST_ASIO_DECL virtual long wait_duration_usec(long max_duration) const;

  // Dequeue all timers not later than the current time.
  BOOST_ASIO_DECL virtual void get_ready_timers(op_queue<operation>& ops);

  // Dequeue all timers.
  BOOST_ASIO_DECL virtual void get_all_timers(op_queue<operation>& ops);

  // Cancel and dequeue operations for the given timer.
  BOOST_ASIO_DECL std::size_t cancel_timer(
      per_timer_data& timer, op_queue<operation>& ops,
      std::size_t max_cancelled = (std::numeric_limits<std::size_t>::max)());

  timer_queue<forwarding_posix_time_traits> impl_;

} // namespace detail
} // namespace asio
} // namespace boost


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

# include <boost/asio/detail/impl/timer_queue_ptime.ipp>
#endif // defined(BOOST_ASIO_HEADER_ONLY)