127 lines
4.2 KiB
C++
127 lines
4.2 KiB
C++
/*
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Copyright (c) 2007-2014, Arvid Norberg
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All rights reserved.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions
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are met:
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* Redistributions of source code must retain the above copyright
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notice, this list of conditions and the following disclaimer.
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* Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in
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the documentation and/or other materials provided with the distribution.
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* Neither the name of the author nor the names of its
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contributors may be used to endorse or promote products derived
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from this software without specific prior written permission.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef TORRENT_TIME_HPP_INCLUDED
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#define TORRENT_TIME_HPP_INCLUDED
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#include <boost/version.hpp>
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#include "libtorrent/config.hpp"
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#include <boost/cstdint.hpp>
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#if defined BOOST_ASIO_HAS_STD_CHRONO
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#include <chrono>
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#else
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#include <boost/chrono.hpp>
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#endif
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#include <string>
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// OVERVIEW
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//
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// This section contains fundamental time types used internally by
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// libtorrent and exposed through various places in the API. The two
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// basic types are ``ptime`` and ``time_duration``. The first represents
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// a point in time and the second the difference between two points
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// in time.
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//
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// The internal representation of these types is implementation defined
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// and they can only be constructed via one of the construction functions
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// that take a well defined time unit (seconds, minutes, etc.). They can
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// only be turned into well defined time units by the accessor functions
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// (total_microseconds(), etc.).
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//
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// .. note::
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// In a future version of libtorrent, these types will be replaced
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// by the standard timer types from ``std::chrono``.
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//
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namespace libtorrent
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{
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TORRENT_EXTRA_EXPORT char const* time_now_string();
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std::string log_time();
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#if defined BOOST_ASIO_HAS_STD_CHRONO
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typedef std::chrono::high_resolution_clock clock_type;
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#else
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typedef boost::chrono::high_resolution_clock clock_type;
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#endif
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typedef clock_type::time_point ptime;
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typedef clock_type::duration time_duration;
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// returns the current time, as represented by ptime. The
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// resolution of this timer is about 100 ms.
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TORRENT_EXPORT ptime const& time_now();
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// returns the current time as represented by ptime. This is
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// more expensive than time_now(), but provides as high resolution
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// as the operating system can provide.
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inline ptime time_now_hires() { return clock_type::now(); }
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// the earliest and latest possible time points
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// representable by ptime.
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inline ptime min_time() { return (clock_type::time_point::min)(); }
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inline ptime max_time() { return (clock_type::time_point::max)(); }
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#if defined BOOST_ASIO_HAS_STD_CHRONO
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using std::chrono::seconds;
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using std::chrono::milliseconds;
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using std::chrono::microseconds;
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using std::chrono::minutes;
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using std::chrono::hours;
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using std::chrono::duration_cast;
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#else
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using boost::chrono::seconds;
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using boost::chrono::milliseconds;
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using boost::chrono::microseconds;
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using boost::chrono::minutes;
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using boost::chrono::hours;
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using boost::chrono::duration_cast;
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#endif
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template<class T>
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boost::int64_t total_seconds(T td)
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{ return duration_cast<seconds>(td).count(); }
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template<class T>
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boost::int64_t total_milliseconds(T td)
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{ return duration_cast<milliseconds>(td).count(); }
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template<class T>
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boost::int64_t total_microseconds(T td)
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{ return duration_cast<microseconds>(td).count(); }
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}
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#endif // TORRENT_TIME_HPP_INCLUDED
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