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 
ptime_to_timespec(const boost::posix_time::ptime & tm)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
49