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72 lines
2.5 KiB
C++
72 lines
2.5 KiB
C++
/*
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* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
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* All rights reserved.
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*
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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 are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice, this
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* list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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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 ARE
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#pragma once
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namespace AK {
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template<typename TimevalType>
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inline void timeval_sub(const TimevalType& a, const TimevalType& b, TimevalType& result)
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{
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result.tv_sec = a.tv_sec - b.tv_sec;
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result.tv_usec = a.tv_usec - b.tv_usec;
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if (result.tv_usec < 0) {
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--result.tv_sec;
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result.tv_usec += 1000000;
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}
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}
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template<typename TimevalType>
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inline void timeval_add(const TimevalType& a, const TimevalType& b, TimevalType& result)
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{
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result.tv_sec = a.tv_sec + b.tv_sec;
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result.tv_usec = a.tv_usec + b.tv_usec;
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if (result.tv_usec > 1000000) {
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++result.tv_sec;
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result.tv_usec -= 1000000;
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}
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}
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template<typename TimevalType, typename TimespecType>
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inline void timeval_to_timespec(const TimevalType& tv, TimespecType& ts)
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{
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ts.tv_sec = tv.tv_sec;
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ts.tv_nsec = tv.tv_usec * 1000;
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}
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template<typename TimespecType, typename TimevalType>
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inline void timespec_to_timeval(const TimespecType& ts, TimevalType& tv)
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{
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tv.tv_sec = ts.tv_sec;
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tv.tv_usec = ts.tv_nsec / 1000;
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}
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}
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using AK::timeval_add;
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using AK::timeval_sub;
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using AK::timeval_to_timespec;
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using AK::timespec_to_timeval;
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