1 // Copyright (C) 2001-2003

     2 // William E. Kempf

     3 // Copyright (C) 2007-8 Anthony Williams

     4 //

     5 //  Distributed under the Boost Software License, Version 1.0. (See accompanying 

     6 //  file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)

     7 

     8 #ifndef BOOST_XTIME_WEK070601_HPP

     9 #define BOOST_XTIME_WEK070601_HPP

    10 

    11 #include <boost/thread/detail/config.hpp>

    12 

    13 #include <boost/cstdint.hpp>

    14 #include <boost/thread/thread_time.hpp>

    15 #include <boost/date_time/posix_time/conversion.hpp>

    16 

    17 #include <boost/config/abi_prefix.hpp>

    18 

    19 namespace boost {

    20 

    21 enum xtime_clock_types

    22 {

    23     TIME_UTC=1

    24 //    TIME_TAI,

    25 //    TIME_MONOTONIC,

    26 //    TIME_PROCESS,

    27 //    TIME_THREAD,

    28 //    TIME_LOCAL,

    29 //    TIME_SYNC,

    30 //    TIME_RESOLUTION

    31 };

    32 

    33 struct xtime

    34 {

    35 #if defined(BOOST_NO_INT64_T)

    36     typedef int_fast32_t xtime_sec_t; //INT_FAST32_MIN <= sec <= INT_FAST32_MAX

    37 #else

    38     typedef int_fast64_t xtime_sec_t; //INT_FAST64_MIN <= sec <= INT_FAST64_MAX

    39 #endif

    40 

    41     typedef int_fast32_t xtime_nsec_t; //0 <= xtime.nsec < NANOSECONDS_PER_SECOND

    42 

    43     xtime_sec_t sec;

    44     xtime_nsec_t nsec;

    45 

    46     operator system_time() const

    47     {

    48         return boost::posix_time::from_time_t(0)+

    49             boost::posix_time::seconds(static_cast<long>(sec))+

    50 #ifdef BOOST_DATE_TIME_HAS_NANOSECONDS

    51             boost::posix_time::nanoseconds(nsec);

    52 #else

    53         boost::posix_time::microseconds((nsec+500)/1000);

    54 #endif

    55     }

    56     

    57 };

    58 

    59 inline xtime get_xtime(boost::system_time const& abs_time)

    60 {

    61     xtime res;

    62     boost::posix_time::time_duration const time_since_epoch=abs_time-boost::posix_time::from_time_t(0);

    63             

    64     res.sec=static_cast<xtime::xtime_sec_t>(time_since_epoch.total_seconds());

    65     res.nsec=static_cast<xtime::xtime_nsec_t>(time_since_epoch.fractional_seconds()*(1000000000/time_since_epoch.ticks_per_second()));

    66     return res;

    67 }

    68 

    69 inline int xtime_get(struct xtime* xtp, int clock_type)

    70 {

    71     if (clock_type == TIME_UTC)

    72     {

    73         *xtp=get_xtime(get_system_time());

    74         return clock_type;

    75     }

    76     return 0;

    77 }

    78 

    79 

    80 inline int xtime_cmp(const xtime& xt1, const xtime& xt2)

    81 {

    82     if (xt1.sec == xt2.sec)

    83         return (int)(xt1.nsec - xt2.nsec);

    84     else 

    85         return (xt1.sec > xt2.sec) ? 1 : -1;

    86 }

    87 

    88 } // namespace boost

    89 

    90 #include <boost/config/abi_suffix.hpp>

    91 

    92 #endif //BOOST_XTIME_WEK070601_HPP