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arvidn
83 lines
2.9 KiB
C++
83 lines
2.9 KiB
C++
/*
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Copyright (c) 2009, 2015, 2017-2019, 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 "libtorrent/aux_/time.hpp"
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#include <chrono>
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namespace libtorrent { namespace aux {
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time_point time_now() { return clock_type::now(); }
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time_point32 time_now32() { return time_point_cast<seconds32>(clock_type::now()); }
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// for simplifying implementation
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using std::chrono::system_clock;
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// consider using std::chrono::clock_cast on C++20
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time_t to_time_t(const time_point32 tp)
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{
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// special case for unset value
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if (tp == time_point32(seconds32(0))) return 0;
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const auto lt_now = clock_type::now();
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const auto sys_now = system_clock::now();
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const auto r = sys_now + std::chrono::duration_cast<system_clock::duration>(tp - lt_now) + lt::milliseconds(500);
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return system_clock::to_time_t(r);
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}
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// consider using std::chrono::clock_cast on C++20
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time_point32 from_time_t(const std::time_t t)
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{
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// special case for unset value
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if (t == 0) return time_point32(seconds32(0));
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const auto tp = system_clock::from_time_t(t);
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const auto sys_now = system_clock::now();
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const auto lt_now = clock_type::now();
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auto r = lt_now + std::chrono::duration_cast<clock_type::duration>(tp - sys_now);
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// the conversion to seconds will truncate, make sure we round
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return std::chrono::time_point_cast<seconds32>(r + milliseconds(500));
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}
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time_t posix_time()
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{
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#ifdef TORRENT_BUILD_SIMULATOR
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return 1722056360 + clock_type::now().time_since_epoch().count();
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#else
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return ::time(nullptr);
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#endif
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}
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} }
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