mirror of https://github.com/aria2/aria2
101 lines
3.1 KiB
C++
101 lines
3.1 KiB
C++
/* <!-- copyright */
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/*
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* aria2 - The high speed download utility
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*
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* Copyright (C) 2015 Tatsuhiro Tsujikawa
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*
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* In addition, as a special exception, the copyright holders give
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* permission to link the code of portions of this program with the
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* OpenSSL library under certain conditions as described in each
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* individual source file, and distribute linked combinations
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* including the two.
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* You must obey the GNU General Public License in all respects
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* for all of the code used other than OpenSSL. If you modify
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* file(s) with this exception, you may extend this exception to your
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* version of the file(s), but you are not obligated to do so. If you
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* do not wish to do so, delete this exception statement from your
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* version. If you delete this exception statement from all source
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* files in the program, then also delete it here.
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*/
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/* copyright --> */
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#ifndef D_TIMER_A2_H
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#define D_TIMER_A2_H
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#include "common.h"
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#include <chrono>
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#include "a2time.h"
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#include "a2functional.h"
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namespace aria2 {
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class Timer {
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public:
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using Clock = std::chrono::steady_clock;
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// The time value is initialized so that it represents the time at which
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// this object was created.
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Timer();
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Timer(const Timer& time) = default;
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Timer(Timer&& time) = default;
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template <typename duration>
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constexpr explicit Timer(const duration& t) : tp_(t)
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{
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}
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explicit Timer(const Clock::time_point& tp);
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Timer& operator=(Timer&& timer) = default;
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Timer& operator=(const Timer& timer) = default;
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bool operator<(const Timer& timer) const { return tp_ < timer.tp_; }
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bool operator>(const Timer& timer) const { return timer < *this; }
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bool operator<=(const Timer& timer) const { return !(timer < *this); }
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bool operator>=(const Timer& timer) const { return !(*this < timer); }
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void reset();
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template <typename duration> void reset(const duration& t)
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{
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tp_ = Clock::time_point(t);
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}
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Clock::duration difference() const;
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Clock::duration difference(const Timer& timer) const;
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// Returns true if this object's time value is zero.
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bool isZero() const;
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template <typename duration> void advance(const duration& t) { tp_ += t; }
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template <typename duration> void sub(const duration& t) { tp_ -= t; }
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const Clock::time_point& getTime() const { return tp_; }
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static Timer zero() { return Timer(0_s); }
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private:
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Clock::time_point tp_;
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};
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} // namespace aria2
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#endif // D_TIMER_A2_H
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