ceph/src/boost/libs/interprocess/include/boost/interprocess/sync/posix/ptime_to_timespec.hpp

   1 //////////////////////////////////////////////////////////////////////////////
   2 //
   3 // (C) Copyright Ion Gaztanaga 2005-2012. Distributed under the Boost
   4 // Software License, Version 1.0. (See accompanying file
   5 // LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
   6 //
   7 // See http://www.boost.org/libs/interprocess for documentation.
   8 //
   9 //////////////////////////////////////////////////////////////////////////////
  10
  11 #ifndef BOOST_INTERPROCESS_DETAIL_PTIME_TO_TIMESPEC_HPP
  12 #define BOOST_INTERPROCESS_DETAIL_PTIME_TO_TIMESPEC_HPP
  13
  14 #ifndef BOOST_CONFIG_HPP
  15 #  include <boost/config.hpp>
  16 #endif
  17 #
  18 #if defined(BOOST_HAS_PRAGMA_ONCE)
  19 #  pragma once
  20 #endif
  21
  22 #include <boost/interprocess/detail/posix_time_types_wrk.hpp>
  23
  24 namespace boost {
  25
  26 namespace interprocess {
  27
  28 namespace ipcdetail {
  29
  30 inline timespec ptime_to_timespec (const boost::posix_time::ptime &tm)
  31 {
  32    const boost::posix_time::ptime epoch(boost::gregorian::date(1970,1,1));
  33    //Avoid negative absolute times
  34    boost::posix_time::time_duration duration  = (tm <= epoch) ? boost::posix_time::time_duration(epoch - epoch)
  35                                                               : boost::posix_time::time_duration(tm - epoch);
  36    timespec ts;
  37    ts.tv_sec  = duration.total_seconds();
  38    ts.tv_nsec = duration.total_nanoseconds() % 1000000000;
  39    return ts;
  40 }
  41
  42 }  //namespace ipcdetail {
  43
  44 }  //namespace interprocess {
  45
  46 }  //namespace boost {
  47
  48 #endif   //ifndef BOOST_INTERPROCESS_DETAIL_PTIME_TO_TIMESPEC_HPP