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//
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// detail/timer_queue_ptime.hpp
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// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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//
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// Copyright (c) 2003-2015 Christopher M. Kohlhoff (chris at kohlhoff dot com)
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//
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// Distributed under the Boost Software License, Version 1.0. (See accompanying
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// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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//
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#ifndef BOOST_ASIO_DETAIL_TIMER_QUEUE_PTIME_HPP
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#define BOOST_ASIO_DETAIL_TIMER_QUEUE_PTIME_HPP
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#if defined(_MSC_VER) && (_MSC_VER >= 1200)
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# pragma once
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#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
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#include <boost/asio/time_traits.hpp>
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#include <boost/asio/detail/timer_queue.hpp>
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#include <boost/asio/detail/push_options.hpp>
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#if defined(BOOST_ASIO_HAS_BOOST_DATE_TIME)
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namespace boost {
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namespace asio {
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namespace detail {
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struct forwarding_posix_time_traits : time_traits<boost::posix_time::ptime> {};
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// Template specialisation for the commonly used instantation.
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template <>
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class timer_queue<time_traits<boost::posix_time::ptime> >
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  : public timer_queue_base
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{
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public:
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  // The time type.
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  typedef boost::posix_time::ptime time_type;
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  // The duration type.
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  typedef boost::posix_time::time_duration duration_type;
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  // Per-timer data.
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  typedef timer_queue<forwarding_posix_time_traits>::per_timer_data
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    per_timer_data;
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  // Constructor.
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  BOOST_ASIO_DECL timer_queue();
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  // Destructor.
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  BOOST_ASIO_DECL virtual ~timer_queue();
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  // Add a new timer to the queue. Returns true if this is the timer that is
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  // earliest in the queue, in which case the reactor's event demultiplexing
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  // function call may need to be interrupted and restarted.
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  BOOST_ASIO_DECL bool enqueue_timer(const time_type& time,
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      per_timer_data& timer, wait_op* op);
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  // Whether there are no timers in the queue.
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  BOOST_ASIO_DECL virtual bool empty() const;
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  // Get the time for the timer that is earliest in the queue.
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  BOOST_ASIO_DECL virtual long wait_duration_msec(long max_duration) const;
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  // Get the time for the timer that is earliest in the queue.
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  BOOST_ASIO_DECL virtual long wait_duration_usec(long max_duration) const;
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  // Dequeue all timers not later than the current time.
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  BOOST_ASIO_DECL virtual void get_ready_timers(op_queue<operation>& ops);
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  // Dequeue all timers.
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  BOOST_ASIO_DECL virtual void get_all_timers(op_queue<operation>& ops);
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  // Cancel and dequeue operations for the given timer.
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  BOOST_ASIO_DECL std::size_t cancel_timer(
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      per_timer_data& timer, op_queue<operation>& ops,
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      std::size_t max_cancelled = (std::numeric_limits<std::size_t>::max)());
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private:
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  timer_queue<forwarding_posix_time_traits> impl_;
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};
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} // namespace detail
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} // namespace asio
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} // namespace boost
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#endif // defined(BOOST_ASIO_HAS_BOOST_DATE_TIME)
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#include <boost/asio/detail/pop_options.hpp>
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#if defined(BOOST_ASIO_HEADER_ONLY)
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# include <boost/asio/detail/impl/timer_queue_ptime.ipp>
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#endif // defined(BOOST_ASIO_HEADER_ONLY)
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#endif // BOOST_ASIO_DETAIL_TIMER_QUEUE_PTIME_HPP