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/*
* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#pragma once
namespace AK {
template<typename TimevalType>
inline void timeval_sub(const TimevalType& a, const TimevalType& b, TimevalType& result)
{
result.tv_sec = a.tv_sec - b.tv_sec;
result.tv_usec = a.tv_usec - b.tv_usec;
if (result.tv_usec < 0) {
--result.tv_sec;
result.tv_usec += 1000000;
}
}
template<typename TimevalType>
inline void timeval_add(const TimevalType& a, const TimevalType& b, TimevalType& result)
{
result.tv_sec = a.tv_sec + b.tv_sec;
result.tv_usec = a.tv_usec + b.tv_usec;
if (result.tv_usec > 1000000) {
++result.tv_sec;
result.tv_usec -= 1000000;
}
}
template<typename TimevalType, typename TimespecType>
inline void timeval_to_timespec(const TimevalType& tv, TimespecType& ts)
{
ts.tv_sec = tv.tv_sec;
ts.tv_nsec = tv.tv_usec * 1000;
}
template<typename TimespecType, typename TimevalType>
inline void timespec_to_timeval(const TimespecType& ts, TimevalType& tv)
{
tv.tv_sec = ts.tv_sec;
tv.tv_usec = ts.tv_nsec / 1000;
}
}
using AK::timeval_add;
using AK::timeval_sub;
using AK::timeval_to_timespec;
using AK::timespec_to_timeval;
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