87 lines
2.1 KiB
C++
87 lines
2.1 KiB
C++
//
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// time_traits.hpp
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// ~~~~~~~~~~~~~~~
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//
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// Copyright (c) 2003-2018 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 ASIO_TIME_TRAITS_HPP
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#define ASIO_TIME_TRAITS_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 "asio/detail/socket_types.hpp" // Must come before posix_time.
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#if defined(ASIO_HAS_BOOST_DATE_TIME) \
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|| defined(GENERATING_DOCUMENTATION)
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#include <boost/date_time/posix_time/posix_time_types.hpp>
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#include "asio/detail/push_options.hpp"
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namespace asio {
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/// Time traits suitable for use with the deadline timer.
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template <typename Time>
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struct time_traits;
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/// Time traits specialised for posix_time.
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template <>
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struct time_traits<boost::posix_time::ptime>
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{
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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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/// Get the current time.
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static time_type now()
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{
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#if defined(BOOST_DATE_TIME_HAS_HIGH_PRECISION_CLOCK)
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return boost::posix_time::microsec_clock::universal_time();
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#else // defined(BOOST_DATE_TIME_HAS_HIGH_PRECISION_CLOCK)
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return boost::posix_time::second_clock::universal_time();
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#endif // defined(BOOST_DATE_TIME_HAS_HIGH_PRECISION_CLOCK)
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}
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/// Add a duration to a time.
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static time_type add(const time_type& t, const duration_type& d)
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{
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return t + d;
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}
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/// Subtract one time from another.
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static duration_type subtract(const time_type& t1, const time_type& t2)
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{
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return t1 - t2;
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}
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/// Test whether one time is less than another.
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static bool less_than(const time_type& t1, const time_type& t2)
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{
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return t1 < t2;
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}
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/// Convert to POSIX duration type.
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static boost::posix_time::time_duration to_posix_duration(
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const duration_type& d)
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{
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return d;
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}
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};
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} // namespace asio
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#include "asio/detail/pop_options.hpp"
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#endif // defined(ASIO_HAS_BOOST_DATE_TIME)
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// || defined(GENERATING_DOCUMENTATION)
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#endif // ASIO_TIME_TRAITS_HPP
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