Chris@16: //
Chris@16: // time_traits.hpp
Chris@16: // ~~~~~~~~~~~~~~~
Chris@16: //
Chris@101: // Copyright (c) 2003-2015 Christopher M. Kohlhoff (chris at kohlhoff dot com)
Chris@16: //
Chris@16: // Distributed under the Boost Software License, Version 1.0. (See accompanying
Chris@16: // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
Chris@16: //
Chris@16: 
Chris@16: #ifndef BOOST_ASIO_TIME_TRAITS_HPP
Chris@16: #define BOOST_ASIO_TIME_TRAITS_HPP
Chris@16: 
Chris@16: #if defined(_MSC_VER) && (_MSC_VER >= 1200)
Chris@16: # pragma once
Chris@16: #endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
Chris@16: 
Chris@16: #include <boost/asio/detail/socket_types.hpp> // Must come before posix_time.
Chris@16: 
Chris@16: #if defined(BOOST_ASIO_HAS_BOOST_DATE_TIME) \
Chris@16:   || defined(GENERATING_DOCUMENTATION)
Chris@16: 
Chris@16: #include <boost/date_time/posix_time/posix_time_types.hpp>
Chris@16: 
Chris@16: #include <boost/asio/detail/push_options.hpp>
Chris@16: 
Chris@16: namespace boost {
Chris@16: namespace asio {
Chris@16: 
Chris@16: /// Time traits suitable for use with the deadline timer.
Chris@16: template <typename Time>
Chris@16: struct time_traits;
Chris@16: 
Chris@16: /// Time traits specialised for posix_time.
Chris@16: template <>
Chris@16: struct time_traits<boost::posix_time::ptime>
Chris@16: {
Chris@16:   /// The time type.
Chris@16:   typedef boost::posix_time::ptime time_type;
Chris@16: 
Chris@16:   /// The duration type.
Chris@16:   typedef boost::posix_time::time_duration duration_type;
Chris@16: 
Chris@16:   /// Get the current time.
Chris@16:   static time_type now()
Chris@16:   {
Chris@16: #if defined(BOOST_DATE_TIME_HAS_HIGH_PRECISION_CLOCK)
Chris@16:     return boost::posix_time::microsec_clock::universal_time();
Chris@16: #else // defined(BOOST_DATE_TIME_HAS_HIGH_PRECISION_CLOCK)
Chris@16:     return boost::posix_time::second_clock::universal_time();
Chris@16: #endif // defined(BOOST_DATE_TIME_HAS_HIGH_PRECISION_CLOCK)
Chris@16:   }
Chris@16: 
Chris@16:   /// Add a duration to a time.
Chris@16:   static time_type add(const time_type& t, const duration_type& d)
Chris@16:   {
Chris@16:     return t + d;
Chris@16:   }
Chris@16: 
Chris@16:   /// Subtract one time from another.
Chris@16:   static duration_type subtract(const time_type& t1, const time_type& t2)
Chris@16:   {
Chris@16:     return t1 - t2;
Chris@16:   }
Chris@16: 
Chris@16:   /// Test whether one time is less than another.
Chris@16:   static bool less_than(const time_type& t1, const time_type& t2)
Chris@16:   {
Chris@16:     return t1 < t2;
Chris@16:   }
Chris@16: 
Chris@16:   /// Convert to POSIX duration type.
Chris@16:   static boost::posix_time::time_duration to_posix_duration(
Chris@16:       const duration_type& d)
Chris@16:   {
Chris@16:     return d;
Chris@16:   }
Chris@16: };
Chris@16: 
Chris@16: } // namespace asio
Chris@16: } // namespace boost
Chris@16: 
Chris@16: #include <boost/asio/detail/pop_options.hpp>
Chris@16: 
Chris@16: #endif // defined(BOOST_ASIO_HAS_BOOST_DATE_TIME)
Chris@16:        // || defined(GENERATING_DOCUMENTATION)
Chris@16: 
Chris@16: #endif // BOOST_ASIO_TIME_TRAITS_HPP