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C++ timer class
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| #include "Timer.hpp" | |
| using namespace std ; | |
| Timer::Timer() : timerStarted(false) {} | |
| Timer::Timer(Timer && other) : timerStarted(std::move(other.timerStarted)), start(std::move(other.start)) {} | |
| Timer::~Timer() {} | |
| Timer & Timer::operator=(Timer && rhs) { | |
| if (this != &rhs) { | |
| timerStarted = rhs.timerStarted ; | |
| start = std::move(rhs.start) ; | |
| } | |
| return *this ; | |
| } | |
| void Timer::startTimer() { | |
| if (timerStarted) { | |
| cerr << "stopTimer() must be called before startTimer() can be called again for this Timer object \n" ; | |
| throw exception() ; | |
| } | |
| timerStarted = true ; | |
| start = chrono::steady_clock::now() ; | |
| } | |
| std::chrono::nanoseconds Timer::checkTimeElapsed() { | |
| //returns in micro or nanoseconds | |
| if (!timerStarted) { | |
| cerr << "checkTimeElapsed() can only be called after startTimer() has been called once \n" ; | |
| throw exception() ; | |
| } | |
| auto duration = chrono::steady_clock::now() - start ; | |
| return duration ; | |
| } | |
| void Timer::reset() { | |
| start = chrono::steady_clock::now() ; | |
| } | |
| std::chrono::nanoseconds Timer::stopTimer() { | |
| if (!timerStarted) { | |
| cerr << "stopTimer() can only be called after startTimer() has been called once \n" ; | |
| throw exception() ; | |
| } | |
| auto duration = chrono::steady_clock::now() - start ; | |
| timerStarted = false ; | |
| return duration ; | |
| } |
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| // | |
| // ClockTicks.h | |
| // Intro to C++ | |
| // | |
| // Created by Adam J. Leuer on 7/27/13. | |
| // Copyright (c) 2013 Adam J. Leuer. All rights reserved. | |
| // | |
| #ifndef __Time__ | |
| #define __Time__ | |
| #include <iostream> | |
| #include <chrono> | |
| using namespace std ; | |
| /** | |
| * @brief A class providing simple nanosecond-precision timing facilities | |
| */ | |
| class Timer { | |
| private: | |
| bool timerStarted ; | |
| chrono::time_point<std::chrono::steady_clock, std::chrono::nanoseconds> start ; | |
| public: | |
| Timer() ; | |
| Timer(Timer && other) ; | |
| ~Timer() ; | |
| Timer & operator=(Timer && rhs) ; | |
| /** | |
| * @brief Starts the timer. | |
| */ | |
| void startTimer() ; | |
| /** | |
| * @brief Checks the time elapsed since startTimer() was called. | |
| * Unlike stopTimer(), this function will not stop the timer. | |
| * | |
| * @note 1 millisecond = 1000000 nanoseconds | |
| * | |
| * @return The time elapsed in nanoseconds. | |
| */ | |
| std::chrono::nanoseconds checkTimeElapsed() ; | |
| /** | |
| * @brief Resets the timer to 0 | |
| */ | |
| void reset() ; | |
| /** | |
| * @brief Stops timer and returns the time elapsed since startTimer() was called. | |
| * | |
| * @note 1 millisecond = 1000000 nanoseconds | |
| * | |
| * @return The time elapsed in nanoseconds. | |
| */ | |
| std::chrono::nanoseconds stopTimer() ; | |
| } ; | |
| #endif /* defined Time */ |
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