ceph/src/boost/boost/log/attributes/time_traits.hpp

   1 /*
   2  *          Copyright Andrey Semashev 2007 - 2015.
   3  * Distributed under the Boost Software License, Version 1.0.
   4  *    (See accompanying file LICENSE_1_0.txt or copy at
   5  *          http://www.boost.org/LICENSE_1_0.txt)
   6  */
   7 /*!
   8  * \file   time_traits.hpp
   9  * \author Andrey Semashev
  10  * \date   01.12.2007
  11  *
  12  * The header contains implementation of time traits that are used in various parts of the
  13  * library to acquire current time.
  14  */
  15
  16 #ifndef BOOST_LOG_ATTRIBUTES_TIME_TRAITS_HPP_INCLUDED_
  17 #define BOOST_LOG_ATTRIBUTES_TIME_TRAITS_HPP_INCLUDED_
  18
  19 #include <boost/date_time/posix_time/posix_time_types.hpp>
  20 #include <boost/log/detail/config.hpp>
  21 #include <boost/log/detail/header.hpp>
  22
  23 #ifdef BOOST_HAS_PRAGMA_ONCE
  24 #pragma once
  25 #endif
  26
  27 namespace boost {
  28
  29 BOOST_LOG_OPEN_NAMESPACE
  30
  31 namespace attributes {
  32
  33 //! Base class for time traits involving Boost.DateTime.
  34 struct basic_time_traits
  35 {
  36     //! Time type
  37     typedef posix_time::ptime time_type;
  38
  39     //! Current time source
  40 #if defined(BOOST_DATE_TIME_HAS_HIGH_PRECISION_CLOCK)
  41     typedef posix_time::microsec_clock clock_source;
  42 #else
  43     typedef posix_time::second_clock clock_source;
  44 #endif // defined(BOOST_DATE_TIME_HAS_HIGH_PRECISION_CLOCK)
  45 };
  46
  47 //! Time traits that describes UTC time acquirement via Boost.DateTime facilities
  48 struct utc_time_traits :
  49     public basic_time_traits
  50 {
  51     /*!
  52      * \return Current time stamp
  53      */
  54     static time_type get_clock()
  55     {
  56         return clock_source::universal_time();
  57     }
  58 };
  59
  60 //! Time traits that describes local time acquirement via Boost.DateTime facilities
  61 struct local_time_traits :
  62     public basic_time_traits
  63 {
  64     /*!
  65      * \return Current time stamp
  66      */
  67     static time_type get_clock()
  68     {
  69         return clock_source::local_time();
  70     }
  71 };
  72
  73 } // namespace attributes
  74
  75 BOOST_LOG_CLOSE_NAMESPACE // namespace log
  76
  77 } // namespace boost
  78
  79 #include <boost/log/detail/footer.hpp>
  80
  81 #endif // BOOST_LOG_ATTRIBUTES_TIME_TRAITS_HPP_INCLUDED_