128 lines
2.7 KiB
C++
128 lines
2.7 KiB
C++
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/*!
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******************************************************************************
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*
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* \file
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*
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* \brief RAJA header file for simple class that can be used to
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* time code sections.
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*
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* \author Rich Hornung, Center for Applied Scientific Computing, LLNL
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* \author Jeff Keasler, Applications, Simulations And Quality, LLNL
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*
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******************************************************************************
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*/
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#ifndef RAJA_Timer_HXX
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#define RAJA_Timer_HXX
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#if defined(RAJA_USE_CYCLE)
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# include "./cycle.h"
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typedef ticks TimeType;
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#elif defined(RAJA_USE_CLOCK)
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# include <time.h>
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typedef clock_t TimeType;
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#elif defined(RAJA_USE_GETTIME)
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# include <time.h>
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typedef timespec TimeType;
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#else
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# error RAJA_TIMER_TYPE is undefined!
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#endif
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namespace RAJA
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{
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/*!
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******************************************************************************
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*
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* \brief Simple timer class to time code sections.
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*
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******************************************************************************
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*/
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class Timer
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{
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public:
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#if defined(RAJA_USE_CYCLE) || defined(RAJA_USE_CLOCK)
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Timer()
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: telapsed(0)
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{
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;
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}
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#endif
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#if defined(RAJA_USE_GETTIME)
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Timer()
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: telapsed(0)
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, stime_elapsed(0)
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, nstime_elapsed(0)
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{
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;
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}
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#endif
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#if defined(RAJA_USE_CYCLE)
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void start() { tstart = getticks(); }
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void stop()
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{
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tstop = getticks();
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set_elapsed();
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}
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long double elapsed() { return static_cast<long double>(telapsed); }
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#endif
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#if defined(RAJA_USE_CLOCK)
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void start() { tstart = clock(); }
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void stop()
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{
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tstop = clock();
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set_elapsed();
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}
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long double elapsed() { return static_cast<long double>(telapsed) / CLOCKS_PER_SEC; }
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#endif
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#if defined(RAJA_USE_GETTIME)
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# if 0
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void start() { clock_gettime(CLOCK_REALTIME, &tstart); }
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void stop() { clock_gettime(CLOCK_REALTIME, &tstop); set_elapsed(); }
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# else
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void start() { clock_gettime(CLOCK_MONOTONIC, &tstart); }
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void stop()
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{
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clock_gettime(CLOCK_MONOTONIC, &tstop);
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set_elapsed();
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}
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# endif
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long double elapsed() { return (stime_elapsed + nstime_elapsed); }
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#endif
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private:
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TimeType tstart;
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TimeType tstop;
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long double telapsed;
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#if defined(RAJA_USE_CYCLE) || defined(RAJA_USE_CLOCK)
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void set_elapsed() { telapsed += (tstop - tstart); }
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#elif defined(RAJA_USE_GETTIME)
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long double stime_elapsed;
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long double nstime_elapsed;
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void set_elapsed()
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{
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stime_elapsed += static_cast<long double>(tstop.tv_sec - tstart.tv_sec);
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nstime_elapsed +=
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static_cast<long double>(tstop.tv_nsec - tstart.tv_nsec) / 1000000000.0;
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}
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#endif
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};
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} // namespace RAJA
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#endif // closing endif for header file include guard
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