Added thirdparty: boost library

2026-08-16 12:18:09 +00:00 · 2024-01-06 19:55:56 +02:00
parent bf49f439e1
commit bccd1e7051
15683 changed files with 3239840 additions and 0 deletions
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+//////////////////////////////////////////////////////////////////////////////
+//
+// (C) Copyright Ion Gaztanaga 2005-2012. Distributed under the Boost
+// Software License, Version 1.0. (See accompanying file
+// LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+//
+// See http://www.boost.org/libs/interprocess for documentation.
+//
+//////////////////////////////////////////////////////////////////////////////
+
+#ifndef BOOST_INTERPROCESS_DETAIL_TIMEPOINT_TO_TIMESPEC_HPP
+#define BOOST_INTERPROCESS_DETAIL_TIMEPOINT_TO_TIMESPEC_HPP
+
+#ifndef BOOST_CONFIG_HPP
+#  include <boost/config.hpp>
+#endif
+#
+#if defined(BOOST_HAS_PRAGMA_ONCE)
+#  pragma once
+#endif
+
+#include <boost/interprocess/detail/mpl.hpp>
+#include <boost/interprocess/detail/type_traits.hpp>
+#include <boost/interprocess/detail/timed_utils.hpp>
+
+namespace boost {
+
+namespace interprocess {
+
+namespace ipcdetail {
+
+template<class TimePoint>
+inline timespec timepoint_to_timespec ( const TimePoint &tm
+                                      , typename enable_if_ptime<TimePoint>::type * = 0)
+{
+   typedef typename TimePoint::date_type            date_type;
+   typedef typename TimePoint::time_duration_type   time_duration_type;
+
+   const TimePoint epoch(date_type(1970,1,1));
+
+   //Avoid negative absolute times
+   time_duration_type duration  = (tm <= epoch) ? time_duration_type(epoch - epoch)
+                                                : time_duration_type(tm - epoch);
+   timespec ts;
+   ts.tv_sec  = static_cast<time_t>(duration.total_seconds());
+   ts.tv_nsec = static_cast<long>(duration.total_nanoseconds() % 1000000000);
+   return ts;
+}
+
+inline timespec timepoint_to_timespec (const ustime &tm)
+{
+   timespec ts;
+   ts.tv_sec  = static_cast<time_t>(tm.get_microsecs()/1000000u);
+   ts.tv_nsec = static_cast<long>((tm.get_microsecs()%1000000u)*1000u);
+   return ts;
+}
+
+template<class TimePoint>
+inline timespec timepoint_to_timespec ( const TimePoint &tm
+                                      , typename enable_if_time_point<TimePoint>::type * = 0)
+{
+   typedef typename TimePoint::duration duration_t;
+   duration_t d(tm.time_since_epoch());
+
+   timespec ts;
+   BOOST_IF_CONSTEXPR(duration_t::period::num == 1 && duration_t::period::den == 1000000000)
+   {
+      ts.tv_sec  = static_cast<time_t>(d.count()/duration_t::period::den);
+      ts.tv_nsec = static_cast<long>(d.count()%duration_t::period::den);
+   }
+   else
+   {
+      const double factor = double(duration_t::period::num)/double(duration_t::period::den);
+      const double res = d.count()*factor;
+      ts.tv_sec  = static_cast<time_t>(res);
+      ts.tv_nsec = static_cast<long>(res - double(ts.tv_sec));
+   }
+   return ts;
+}
+
+}  //namespace ipcdetail {
+
+}  //namespace interprocess {
+
+}  //namespace boost {
+
+#endif   //ifndef BOOST_INTERPROCESS_DETAIL_TIMEPOINT_TO_TIMESPEC_HPP