mirror of
https://github.com/paboyle/Grid.git
synced 2024-11-15 02:05:37 +00:00
102 lines
2.8 KiB
C++
102 lines
2.8 KiB
C++
/*************************************************************************************
|
|
|
|
Grid physics library, www.github.com/paboyle/Grid
|
|
|
|
Source file: ./lib/Timer.h
|
|
|
|
Copyright (C) 2015
|
|
|
|
Author: Azusa Yamaguchi <ayamaguc@staffmail.ed.ac.uk>
|
|
Author: Peter Boyle <paboyle@ph.ed.ac.uk>
|
|
|
|
This program is free software; you can redistribute it and/or modify
|
|
it under the terms of the GNU General Public License as published by
|
|
the Free Software Foundation; either version 2 of the License, or
|
|
(at your option) any later version.
|
|
|
|
This program is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
GNU General Public License for more details.
|
|
|
|
You should have received a copy of the GNU General Public License along
|
|
with this program; if not, write to the Free Software Foundation, Inc.,
|
|
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
|
|
|
|
See the full license in the file "LICENSE" in the top level distribution directory
|
|
*************************************************************************************/
|
|
/* END LEGAL */
|
|
#ifndef GRID_TIME_H
|
|
#define GRID_TIME_H
|
|
|
|
#include <sys/time.h>
|
|
#include <ctime>
|
|
#include <chrono>
|
|
|
|
NAMESPACE_BEGIN(Grid)
|
|
|
|
// Dress the output; use std::chrono
|
|
// C++11 time facilities better?
|
|
inline double usecond(void) {
|
|
struct timeval tv;
|
|
#ifdef TIMERS_ON
|
|
gettimeofday(&tv,NULL);
|
|
#endif
|
|
return 1.0*tv.tv_usec + 1.0e6*tv.tv_sec;
|
|
}
|
|
|
|
typedef std::chrono::system_clock GridClock;
|
|
typedef std::chrono::time_point<GridClock> GridTimePoint;
|
|
typedef std::chrono::milliseconds GridTime;
|
|
typedef std::chrono::microseconds GridUsecs;
|
|
|
|
inline std::ostream& operator<< (std::ostream & stream, const std::chrono::milliseconds & time)
|
|
{
|
|
stream << time.count()<<" ms";
|
|
return stream;
|
|
}
|
|
|
|
class GridStopWatch {
|
|
private:
|
|
bool running;
|
|
GridTimePoint start;
|
|
GridUsecs accumulator;
|
|
public:
|
|
GridStopWatch () {
|
|
Reset();
|
|
}
|
|
void Start(void) {
|
|
assert(running == false);
|
|
#ifdef TIMERS_ON
|
|
start = GridClock::now();
|
|
#endif
|
|
running = true;
|
|
}
|
|
void Stop(void) {
|
|
assert(running == true);
|
|
#ifdef TIMERS_ON
|
|
accumulator+= std::chrono::duration_cast<GridUsecs>(GridClock::now()-start);
|
|
#endif
|
|
running = false;
|
|
};
|
|
void Reset(void){
|
|
running = false;
|
|
#ifdef TIMERS_ON
|
|
start = GridClock::now();
|
|
#endif
|
|
accumulator = std::chrono::duration_cast<GridUsecs>(start-start);
|
|
}
|
|
GridTime Elapsed(void) {
|
|
assert(running == false);
|
|
return std::chrono::duration_cast<GridTime>( accumulator );
|
|
}
|
|
uint64_t useconds(void){
|
|
assert(running == false);
|
|
return (uint64_t) accumulator.count();
|
|
}
|
|
};
|
|
|
|
NAMESPACE_END(Grid)
|
|
|
|
#endif
|