73 lines
2.2 KiB
C++
73 lines
2.2 KiB
C++
/*
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* Copyright 2007-2022 CM4all GmbH
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* All rights reserved.
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*
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* author: Max Kellermann <mk@cm4all.com>
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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
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* are met:
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*
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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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*
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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 the
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* documentation and/or other materials provided with the
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* distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* FOUNDATION OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* 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
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* OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef TIME_CONVERT_HXX
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#define TIME_CONVERT_HXX
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#include <chrono>
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/**
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* Convert a UTC-based time point to a UTC-based "struct tm".
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*
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* Throws on error.
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*/
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struct tm
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GmTime(std::chrono::system_clock::time_point tp);
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/**
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* Convert a UTC-based time point to a local "struct tm".
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*
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* Throws on error.
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*/
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struct tm
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LocalTime(std::chrono::system_clock::time_point tp);
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/**
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* Convert a UTC-based "struct tm" to a UTC-based time point.
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*/
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[[gnu::pure]]
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std::chrono::system_clock::time_point
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TimeGm(struct tm &tm) noexcept;
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/**
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* Convert a local "struct tm" to a UTC-based time point.
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*/
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[[gnu::pure]]
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std::chrono::system_clock::time_point
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MakeTime(struct tm &tm) noexcept;
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[[gnu::pure]]
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std::chrono::steady_clock::duration
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ToSteadyClockDuration(const struct timeval &tv) noexcept;
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#endif
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