ceph/src/boost/libs/thread/include/boost/thread/xtime.hpp

   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 #if defined BOOST_THREAD_USES_DATETIME
  13
  14 #include <boost/cstdint.hpp>
  15 #include <boost/thread/thread_time.hpp>
  16 #include <boost/date_time/posix_time/conversion.hpp>
  17
  18 #include <boost/config/abi_prefix.hpp>
  19
  20 namespace boost {
  21
  22 enum xtime_clock_types
  23 {
  24     TIME_UTC_=1
  25 //    TIME_TAI,
  26 //    TIME_MONOTONIC,
  27 //    TIME_PROCESS,
  28 //    TIME_THREAD,
  29 //    TIME_LOCAL,
  30 //    TIME_SYNC,
  31 //    TIME_RESOLUTION
  32 };
  33
  34 struct xtime
  35 {
  36 #if defined(BOOST_NO_INT64_T)
  37     typedef int_fast32_t xtime_sec_t; //INT_FAST32_MIN <= sec <= INT_FAST32_MAX
  38 #else
  39     typedef int_fast64_t xtime_sec_t; //INT_FAST64_MIN <= sec <= INT_FAST64_MAX
  40 #endif
  41
  42     typedef int_fast32_t xtime_nsec_t; //0 <= xtime.nsec < NANOSECONDS_PER_SECOND
  43
  44     xtime_sec_t sec;
  45     xtime_nsec_t nsec;
  46
  47     operator system_time() const
  48     {
  49         return boost::posix_time::from_time_t(0)+
  50             boost::posix_time::seconds(static_cast<long>(sec))+
  51 #ifdef BOOST_DATE_TIME_HAS_NANOSECONDS
  52             boost::posix_time::nanoseconds(nsec);
  53 #else
  54         boost::posix_time::microseconds((nsec+500)/1000);
  55 #endif
  56     }
  57
  58 };
  59
  60 inline xtime get_xtime(boost::system_time const& abs_time)
  61 {
  62     xtime res;
  63     boost::posix_time::time_duration const time_since_epoch=abs_time-boost::posix_time::from_time_t(0);
  64
  65     res.sec=static_cast<xtime::xtime_sec_t>(time_since_epoch.total_seconds());
  66     res.nsec=static_cast<xtime::xtime_nsec_t>(time_since_epoch.fractional_seconds()*(1000000000/time_since_epoch.ticks_per_second()));
  67     return res;
  68 }
  69
  70 inline int xtime_get(struct xtime* xtp, int clock_type)
  71 {
  72     if (clock_type == TIME_UTC_)
  73     {
  74         *xtp=get_xtime(get_system_time());
  75         return clock_type;
  76     }
  77     return 0;
  78 }
  79
  80
  81 inline int xtime_cmp(const xtime& xt1, const xtime& xt2)
  82 {
  83     if (xt1.sec == xt2.sec)
  84         return (int)(xt1.nsec - xt2.nsec);
  85     else
  86         return (xt1.sec > xt2.sec) ? 1 : -1;
  87 }
  88
  89 } // namespace boost
  90
  91 #include <boost/config/abi_suffix.hpp>
  92 #endif
  93 #endif //BOOST_XTIME_WEK070601_HPP