systems-assistant[bot]
321e497048
Co-authored-by: github-actions[bot] <github-actions[bot]@users.noreply.github.com>
88 wiersze
3.7 KiB
C++
88 wiersze
3.7 KiB
C++
/*
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***********************************************************************************************************************
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*
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* Copyright (c) 2021-2025 Advanced Micro Devices, Inc. All Rights Reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in all
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* copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*
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**********************************************************************************************************************/
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/**
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***********************************************************************************************************************
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* @file palTime.h
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* @brief PAL time-related utility collection.
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***********************************************************************************************************************
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*/
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#pragma once
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#include <chrono>
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namespace Util
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{
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/// Specifies a class that implements a timestamp.
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class Timestamp
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{
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public:
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/// Creates a new timestamp object that records the time it was created.
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Timestamp();
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/// Returns the timestamp as a C-string.
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const char* CStr() const { return m_data; }
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private:
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char m_data[64];
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};
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#if PAL_CLIENT_INTERFACE_MAJOR_VERSION >= 873
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/// Seconds stored as a float instead of an integer.
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using fseconds = std::chrono::duration<float>;
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/// Milliseconds stored as a float instead of an integer.
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using fmilliseconds = std::chrono::duration<float, std::milli>;
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/// Microseconds stored as a float instead of an integer.
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using fmicroseconds = std::chrono::duration<float, std::micro>;
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/// Nanoseconds stored as a float instead of an integer.
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using fnanoseconds = std::chrono::duration<float, std::nano>;
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/// A time_point who's epoch is January 1st 1970 and uses seconds for the duration.
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/// C++20 guarantees us that system_clock's epoch is always January 1st 1970 on all platforms.
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/// system_clock's internal duration is still implementation defined.
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/// On Windows it's hundreds-of-nanoseconds and on Linux it's seconds.
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/// However time_point has it's own duration type.
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/// As long as we go through the time_point to interpret the duration then everything should be in terms of seconds.
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using SecondsSinceEpoch = std::chrono::time_point<std::chrono::system_clock, std::chrono::seconds>;
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/// Like std::chrono::duration_cast, but it preserves the special 'infinite' value used in timeouts.
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template<class DestDuration, class Rep, class Period>
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constexpr DestDuration TimeoutCast(
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const std::chrono::duration<Rep, Period>& d)
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{
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if (d == (std::chrono::duration<Rep, Period>::max)())
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{
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return (DestDuration::max)();
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}
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else
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{
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return std::chrono::duration_cast<DestDuration, Rep, Period>(d);
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}
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}
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#endif
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} // Util
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