58 lines
1.5 KiB
C++
58 lines
1.5 KiB
C++
/*
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* Copyright (c) 2018 MariaDB Corporation Ab
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*
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* Use of this software is governed by the Business Source License included
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* in the LICENSE.TXT file and at www.mariadb.com/bsl11.
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*
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* Change Date: 2023-01-01
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*
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* On the date above, in accordance with the Business Source License, use
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* of this software will be governed by version 2 or later of the General
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* Public License.
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*/
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#pragma once
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#include <chrono>
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#include <iosfwd>
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#include <string>
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// Same StopWatch as in maxscale, but dropping support for gcc 4.4
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namespace base
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{
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using Clock = std::chrono::steady_clock;
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struct Duration : public Clock::duration // for ADL
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{
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using Clock::duration::duration;
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Duration() = default;
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Duration(Clock::duration d) : Clock::duration(d)
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{
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}
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};
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using TimePoint = std::chrono::time_point<Clock, Duration>;
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class StopWatch
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{
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public:
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// Starts the stopwatch, which is always running.
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StopWatch();
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// Get elapsed time.
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Duration lap() const;
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// Get elapsed time, restart StopWatch.
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Duration restart();
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private:
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TimePoint m_start;
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};
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// Returns the value as a double and string adjusted to a suffix like ms for milliseconds.
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std::pair<double, std::string> dur_to_human_readable(Duration dur);
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// Human readable output. No standard library for it yet.
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std::ostream& operator<<(std::ostream&, Duration dur);
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// TimePoint
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std::string time_point_to_string(TimePoint tp, const std::string& fmt = "%F %T");
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std::ostream& operator<<(std::ostream&, TimePoint tp);
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} // base
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