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Diffstat (limited to 'src/third_party/boost-1.56.0/boost/date_time/microsec_time_clock.hpp')
| -rw-r--r-- | src/third_party/boost-1.56.0/boost/date_time/microsec_time_clock.hpp | 127 |
1 files changed, 0 insertions, 127 deletions
diff --git a/src/third_party/boost-1.56.0/boost/date_time/microsec_time_clock.hpp b/src/third_party/boost-1.56.0/boost/date_time/microsec_time_clock.hpp deleted file mode 100644 index bffc74137e8..00000000000 --- a/src/third_party/boost-1.56.0/boost/date_time/microsec_time_clock.hpp +++ /dev/null @@ -1,127 +0,0 @@ -#ifndef DATE_TIME_HIGHRES_TIME_CLOCK_HPP___ -#define DATE_TIME_HIGHRES_TIME_CLOCK_HPP___ - -/* Copyright (c) 2002,2003,2005 CrystalClear Software, Inc. - * Use, modification and distribution is subject to the - * Boost Software License, Version 1.0. (See accompanying - * file LICENSE_1_0.txt or http://www.boost.org/LICENSE_1_0.txt) - * Author: Jeff Garland, Bart Garst - * $Date$ - */ - - -/*! @file microsec_time_clock.hpp - This file contains a high resolution time clock implementation. -*/ - -#include <boost/cstdint.hpp> -#include <boost/shared_ptr.hpp> -#include <boost/detail/workaround.hpp> -#include <boost/date_time/compiler_config.hpp> -#include <boost/date_time/c_time.hpp> -#include <boost/date_time/time_clock.hpp> -#include <boost/date_time/filetime_functions.hpp> - -#ifdef BOOST_DATE_TIME_HAS_HIGH_PRECISION_CLOCK - -namespace boost { -namespace date_time { - - //! A clock providing microsecond level resolution - /*! A high precision clock that measures the local time - * at a resolution up to microseconds and adjusts to the - * resolution of the time system. For example, for the - * a library configuration with nano second resolution, - * the last 3 places of the fractional seconds will always - * be 000 since there are 1000 nano-seconds in a micro second. - */ - template<class time_type> - class microsec_clock - { - private: - //! Type for the function used to convert time_t to tm - typedef std::tm* (*time_converter)(const std::time_t*, std::tm*); - - public: - typedef typename time_type::date_type date_type; - typedef typename time_type::time_duration_type time_duration_type; - typedef typename time_duration_type::rep_type resolution_traits_type; - - //! return a local time object for the given zone, based on computer clock - //JKG -- looks like we could rewrite this against universal_time - template<class time_zone_type> - static time_type local_time(shared_ptr<time_zone_type> tz_ptr) - { - typedef typename time_type::utc_time_type utc_time_type; - typedef second_clock<utc_time_type> second_clock; - // we'll need to know the utc_offset this machine has - // in order to get a utc_time_type set to utc - utc_time_type utc_time = second_clock::universal_time(); - time_duration_type utc_offset = second_clock::local_time() - utc_time; - // use micro clock to get a local time with sub seconds - // and adjust it to get a true utc time reading with sub seconds - utc_time = microsec_clock<utc_time_type>::local_time() - utc_offset; - return time_type(utc_time, tz_ptr); - } - - //! Returns the local time based on computer clock settings - static time_type local_time() - { - return create_time(&c_time::localtime); - } - - //! Returns the UTC time based on computer settings - static time_type universal_time() - { - return create_time(&c_time::gmtime); - } - - private: - static time_type create_time(time_converter converter) - { -#ifdef BOOST_HAS_GETTIMEOFDAY - timeval tv; - gettimeofday(&tv, 0); //gettimeofday does not support TZ adjust on Linux. - std::time_t t = tv.tv_sec; - boost::uint32_t sub_sec = tv.tv_usec; -#elif defined(BOOST_HAS_FTIME) - winapi::file_time ft; - winapi::get_system_time_as_file_time(ft); - uint64_t micros = winapi::file_time_to_microseconds(ft); // it will not wrap, since ft is the current time - // and cannot be before 1970-Jan-01 - std::time_t t = static_cast<std::time_t>(micros / 1000000UL); // seconds since epoch - // microseconds -- static casts supress warnings - boost::uint32_t sub_sec = static_cast<boost::uint32_t>(micros % 1000000UL); -#else -#error Internal Boost.DateTime error: BOOST_DATE_TIME_HAS_HIGH_PRECISION_CLOCK is defined, however neither gettimeofday nor FILETIME support is detected. -#endif - - std::tm curr; - std::tm* curr_ptr = converter(&t, &curr); - date_type d(static_cast< typename date_type::year_type::value_type >(curr_ptr->tm_year + 1900), - static_cast< typename date_type::month_type::value_type >(curr_ptr->tm_mon + 1), - static_cast< typename date_type::day_type::value_type >(curr_ptr->tm_mday)); - - //The following line will adjust the fractional second tick in terms - //of the current time system. For example, if the time system - //doesn't support fractional seconds then res_adjust returns 0 - //and all the fractional seconds return 0. - int adjust = static_cast< int >(resolution_traits_type::res_adjust() / 1000000); - - time_duration_type td(static_cast< typename time_duration_type::hour_type >(curr_ptr->tm_hour), - static_cast< typename time_duration_type::min_type >(curr_ptr->tm_min), - static_cast< typename time_duration_type::sec_type >(curr_ptr->tm_sec), - sub_sec * adjust); - - return time_type(d,td); - } - }; - - -} } //namespace date_time - -#endif //BOOST_DATE_TIME_HAS_HIGH_PRECISION_CLOCK - - -#endif - |