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60 lines
1.5 KiB
C++
60 lines
1.5 KiB
C++
/*
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* =====================================================================================
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*
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* Filename: timer.h
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*
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* Description: Timer utils.
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*
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* Author: Milan Kabat, kabat@ics.muni.cz
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*
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* =====================================================================================
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*/
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#ifndef TIMER_INC
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#define TIMER_INC
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#include <chrono>
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#if defined __GNUC__ && __GNUC__ == 4 && __GNUC_MINOR__ == 6 // compat, GCC 4.6 didn't have steady_clock
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#define steady_clock system_clock
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#endif
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/*! \class Timer_util
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* \brief This class implements timer utils
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*/
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class Timer_util
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{
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private:
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std::chrono::time_point<std::chrono::steady_clock> start_time;
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std::chrono::time_point<std::chrono::steady_clock> end_time;
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public:
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inline void start() {
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start_time = std::chrono::steady_clock::now();
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}
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inline void end() {
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end_time = std::chrono::steady_clock::now();
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}
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/**
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* Computes time elapsed between start and end in seconds (as a real value)
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*
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* @return Elapsed seconds as double value
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*/
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inline double
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elapsed_time ()
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{
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return std::chrono::duration_cast<std::chrono::duration<double>>(end_time - start_time).count();
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}
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inline long
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elapsed_time_us ()
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{
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return std::chrono::duration_cast<std::chrono::duration<long, std::micro>>(end_time - start_time).count();
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}
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}; /* ----- end of class Timer_util ----- */
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#endif /* ----- #ifndef TIMER_INC ----- */
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