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103 lines
3.0 KiB
C++
103 lines
3.0 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_MANUAL_CLOCK_H_INCLUDED
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#define BEAST_CHRONO_MANUAL_CLOCK_H_INCLUDED
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#include <xrpl/beast/clock/abstract_clock.h>
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#include <xrpl/beast/utility/instrumentation.h>
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#include <chrono>
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namespace beast {
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/** Manual clock implementation.
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This concrete class implements the @ref abstract_clock interface and
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allows the time to be advanced manually, mainly for the purpose of
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providing a clock in unit tests.
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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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template <class Clock>
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class manual_clock : public abstract_clock<Clock>
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{
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public:
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using typename abstract_clock<Clock>::rep;
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using typename abstract_clock<Clock>::duration;
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using typename abstract_clock<Clock>::time_point;
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private:
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time_point now_;
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public:
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explicit manual_clock(time_point const& now = time_point(duration(0)))
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: now_(now)
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{
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}
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time_point
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now() const override
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{
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return now_;
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}
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/** Set the current time of the manual clock. */
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void
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set(time_point const& when)
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{
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XRPL_ASSERT(
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!Clock::is_steady || when >= now_,
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"beast::manual_clock::set(time_point) : forward input");
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now_ = when;
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}
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/** Convenience for setting the time in seconds from epoch. */
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template <class Integer>
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void
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set(Integer seconds_from_epoch)
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{
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set(time_point(duration(std::chrono::seconds(seconds_from_epoch))));
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}
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/** Advance the clock by a duration. */
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template <class Rep, class Period>
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void
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advance(std::chrono::duration<Rep, Period> const& elapsed)
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{
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XRPL_ASSERT(
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!Clock::is_steady || (now_ + elapsed) >= now_,
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"beast::manual_clock::advance(duration) : forward input");
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now_ += elapsed;
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}
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/** Convenience for advancing the clock by one second. */
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manual_clock&
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operator++()
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{
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advance(std::chrono::seconds(1));
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return *this;
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}
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};
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} // namespace beast
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#endif
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