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)30inline 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