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- //
- // time_traits.hpp
- // ~~~~~~~~~~~~~~~
- //
- // Copyright (c) 2003-2019 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 ASIO_TIME_TRAITS_HPP
- #define ASIO_TIME_TRAITS_HPP
-
- #if defined(_MSC_VER) && (_MSC_VER >= 1200)
- # pragma once
- #endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
-
- #include "asio/detail/socket_types.hpp" // Must come before posix_time.
-
- #if defined(ASIO_HAS_BOOST_DATE_TIME) \
- || defined(GENERATING_DOCUMENTATION)
-
- #include <boost/date_time/posix_time/posix_time_types.hpp>
-
- #include "asio/detail/push_options.hpp"
-
- namespace asio {
-
- /// Time traits suitable for use with the deadline timer.
- template <typename Time>
- struct time_traits;
-
- /// Time traits specialised for posix_time.
- template <>
- struct time_traits<boost::posix_time::ptime>
- {
- /// The time type.
- typedef boost::posix_time::ptime time_type;
-
- /// The duration type.
- typedef boost::posix_time::time_duration duration_type;
-
- /// Get the current time.
- static time_type now()
- {
- #if defined(BOOST_DATE_TIME_HAS_HIGH_PRECISION_CLOCK)
- return boost::posix_time::microsec_clock::universal_time();
- #else // defined(BOOST_DATE_TIME_HAS_HIGH_PRECISION_CLOCK)
- return boost::posix_time::second_clock::universal_time();
- #endif // defined(BOOST_DATE_TIME_HAS_HIGH_PRECISION_CLOCK)
- }
-
- /// Add a duration to a time.
- static time_type add(const time_type& t, const duration_type& d)
- {
- return t + d;
- }
-
- /// Subtract one time from another.
- static duration_type subtract(const time_type& t1, const time_type& t2)
- {
- return t1 - t2;
- }
-
- /// Test whether one time is less than another.
- static bool less_than(const time_type& t1, const time_type& t2)
- {
- return t1 < t2;
- }
-
- /// Convert to POSIX duration type.
- static boost::posix_time::time_duration to_posix_duration(
- const duration_type& d)
- {
- return d;
- }
- };
-
- } // namespace asio
-
- #include "asio/detail/pop_options.hpp"
-
- #endif // defined(ASIO_HAS_BOOST_DATE_TIME)
- // || defined(GENERATING_DOCUMENTATION)
-
- #endif // ASIO_TIME_TRAITS_HPP
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