224 lines
6.4 KiB
C++
224 lines
6.4 KiB
C++
/*
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Copyright (c) 2009-2012, 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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#include <ctime>
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#include <string>
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#include <cstdio>
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#include <boost/limits.hpp>
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#include <boost/version.hpp>
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#include "libtorrent/config.hpp"
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#include "libtorrent/time.hpp"
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#ifndef _WIN32
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#include <unistd.h>
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#endif
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namespace libtorrent
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{
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namespace aux
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{
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// used to cache the current time
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// every 100 ms. This is cheaper
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// than a system call and can be
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// used where more accurate time
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// is not necessary
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ptime g_current_time;
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}
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TORRENT_EXPORT ptime const& time_now() { return aux::g_current_time; }
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char const* time_now_string()
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{
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// time_t t = std::time(0);
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// tm* timeinfo = std::localtime(&t);
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// static char str[200];
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// std::strftime(str, 200, "%b %d %X", timeinfo);
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// return str;
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static const ptime start = time_now_hires();
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static char ret[200];
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int t = total_milliseconds(time_now_hires() - start);
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int h = t / 1000 / 60 / 60;
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t -= h * 60 * 60 * 1000;
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int m = t / 1000 / 60;
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t -= m * 60 * 1000;
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int s = t / 1000;
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t -= s * 1000;
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int ms = t;
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snprintf(ret, sizeof(ret), "%02d:%02d:%02d.%03d", h, m, s, ms);
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return ret;
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}
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std::string log_time()
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{
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static const ptime start = time_now_hires();
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char ret[200];
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snprintf(ret, sizeof(ret), "%"PRId64, total_microseconds(time_now_hires() - start));
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return ret;
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}
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}
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#if defined TORRENT_USE_BOOST_DATE_TIME
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#include <boost/date_time/microsec_time_clock.hpp>
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namespace libtorrent
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{
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ptime time_now_hires()
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{ return boost::date_time::microsec_clock<ptime>::universal_time(); }
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ptime min_time()
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{ return boost::posix_time::ptime(boost::posix_time::min_date_time); }
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ptime max_time()
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{ return boost::posix_time::ptime(boost::posix_time::max_date_time); }
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time_duration seconds(int s) { return boost::posix_time::seconds(s); }
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time_duration milliseconds(int s) { return boost::posix_time::milliseconds(s); }
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time_duration microsec(int s) { return boost::posix_time::microsec(s); }
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time_duration minutes(int s) { return boost::posix_time::minutes(s); }
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time_duration hours(int s) { return boost::posix_time::hours(s); }
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int total_seconds(time_duration td)
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{ return td.total_seconds(); }
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int total_milliseconds(time_duration td)
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{ return td.total_milliseconds(); }
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boost::int64_t total_microseconds(time_duration td)
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{ return td.total_microseconds(); }
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}
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#else // TORRENT_USE_BOOST_DATE_TIME
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namespace libtorrent
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{
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ptime min_time() { return ptime(0); }
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ptime max_time() { return ptime((std::numeric_limits<boost::uint64_t>::max)()); }
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}
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#if defined TORRENT_USE_ABSOLUTE_TIME
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#include <mach/mach_time.h>
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#include <boost/cstdint.hpp>
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#include "libtorrent/assert.hpp"
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// high precision timer for darwin intel and ppc
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namespace libtorrent
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{
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ptime time_now_hires()
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{
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static mach_timebase_info_data_t timebase_info = {0,0};
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if (timebase_info.denom == 0)
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mach_timebase_info(&timebase_info);
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boost::uint64_t at = mach_absolute_time();
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// make sure we don't overflow
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TORRENT_ASSERT((at >= at / 1000 * timebase_info.numer / timebase_info.denom)
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|| (at < 0 && at < at / 1000 * timebase_info.numer / timebase_info.denom));
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return ptime(at / 1000 * timebase_info.numer / timebase_info.denom);
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}
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}
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#elif defined TORRENT_USE_QUERY_PERFORMANCE_TIMER
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#ifndef WIN32_LEAN_AND_MEAN
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#define WIN32_LEAN_AND_MEAN
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#endif
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#include <windows.h>
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#include "libtorrent/assert.hpp"
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namespace libtorrent
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{
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namespace aux
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{
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boost::int64_t performance_counter_to_microseconds(boost::int64_t pc)
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{
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static LARGE_INTEGER performace_counter_frequency = {0,0};
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if (performace_counter_frequency.QuadPart == 0)
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QueryPerformanceFrequency(&performace_counter_frequency);
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#ifdef TORRENT_DEBUG
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// make sure we don't overflow
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boost::int64_t ret = (pc * 1000 / performace_counter_frequency.QuadPart) * 1000;
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TORRENT_ASSERT((pc >= 0 && pc >= ret) || (pc < 0 && pc < ret));
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#endif
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return (pc * 1000 / performace_counter_frequency.QuadPart) * 1000;
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}
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boost::int64_t microseconds_to_performance_counter(boost::int64_t ms)
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{
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static LARGE_INTEGER performace_counter_frequency = {0,0};
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if (performace_counter_frequency.QuadPart == 0)
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QueryPerformanceFrequency(&performace_counter_frequency);
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#ifdef TORRENT_DEBUG
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// make sure we don't overflow
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boost::int64_t ret = (ms / 1000) * performace_counter_frequency.QuadPart / 1000;
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TORRENT_ASSERT((ms >= 0 && ms <= ret)
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|| (ms < 0 && ms > ret));
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#endif
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return (ms / 1000) * performace_counter_frequency.QuadPart / 1000;
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}
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}
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ptime time_now_hires()
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{
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LARGE_INTEGER now;
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QueryPerformanceCounter(&now);
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return ptime(now.QuadPart);
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}
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}
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#elif defined TORRENT_USE_CLOCK_GETTIME
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#include <time.h>
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#include "libtorrent/assert.hpp"
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namespace libtorrent
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{
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ptime time_now_hires()
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{
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timespec ts;
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clock_gettime(CLOCK_MONOTONIC, &ts);
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return ptime(boost::uint64_t(ts.tv_sec) * 1000000 + ts.tv_nsec / 1000);
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}
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}
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#elif defined TORRENT_USE_SYSTEM_TIME
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#include <kernel/OS.h>
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namespace libtorrent
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{
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ptime time_now_hires()
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{ return ptime(system_time()); }
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}
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#endif // TORRENT_USE_SYSTEM_TIME
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#endif // TORRENT_USE_BOOST_DATE_TIME
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