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57 lines
2.0 KiB
C++
57 lines
2.0 KiB
C++
//------------------------------------------------------------------------------
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/*
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This file is part of Beast: https://github.com/vinniefalco/Beast
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Copyright 2013, Vinnie Falco <vinnie.falco@gmail.com>
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Permission to use, copy, modify, and/or distribute this software for any
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purpose with or without fee is hereby granted, provided that the above
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copyright notice and this permission notice appear in all copies.
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THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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ANY SPECIAL , DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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//==============================================================================
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#ifndef BEAST_CHRONO_BASIC_SECONDS_CLOCK_H_INCLUDED
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#define BEAST_CHRONO_BASIC_SECONDS_CLOCK_H_INCLUDED
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#include <chrono>
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namespace beast {
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/** A clock whose minimum resolution is one second.
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The purpose of this class is to optimize the performance of the now()
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member function call. It uses a dedicated thread that wakes up at least
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once per second to sample the requested trivial clock.
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@tparam Clock A type meeting these requirements:
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http://en.cppreference.com/w/cpp/concept/Clock
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*/
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class basic_seconds_clock
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{
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public:
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using Clock = std::chrono::steady_clock;
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explicit basic_seconds_clock() = default;
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using rep = typename Clock::rep;
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using period = typename Clock::period;
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using duration = typename Clock::duration;
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using time_point = typename Clock::time_point;
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static bool const is_steady = Clock::is_steady;
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static time_point
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now();
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};
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} // namespace beast
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#endif
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