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High res timer replaces getttimeofday

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This commit is contained in:
Peter Boyle 2022-07-28 12:14:03 -04:00
parent 639aab6563
commit 9c21add0c6
1 changed files with 11 additions and 11 deletions
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22
Grid/perfmon/Timer.h
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@ -35,17 +35,8 @@ Author: Peter Boyle <paboyle@ph.ed.ac.uk>
NAMESPACE_BEGIN(Grid) NAMESPACE_BEGIN(Grid)
// Dress the output; use std::chrono //typedef std::chrono::system_clock GridClock;
// C++11 time facilities better? typedef std::chrono::high_resolution_clock GridClock;
inline double usecond(void) {
struct timeval tv;
tv.tv_sec = 0;
tv.tv_usec = 0;
gettimeofday(&tv,NULL);
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::time_point<GridClock> GridTimePoint;
typedef std::chrono::seconds GridSecs; typedef std::chrono::seconds GridSecs;
@ -53,6 +44,15 @@ typedef std::chrono::milliseconds GridMillisecs;
typedef std::chrono::microseconds GridUsecs; typedef std::chrono::microseconds GridUsecs;
typedef std::chrono::microseconds GridTime; typedef std::chrono::microseconds GridTime;
extern GridTimePoint theProgramStart;
// Dress the output; use std::chrono
// C++11 time facilities better?
inline double usecond(void) {
auto usecs = std::chrono::duration_cast<GridUsecs>(GridClock::now()-theProgramStart);
return 1.0*usecs.count();
}
inline std::ostream& operator<< (std::ostream & stream, const GridSecs & time) inline std::ostream& operator<< (std::ostream & stream, const GridSecs & time)
{ {
stream << time.count()<<" s"; stream << time.count()<<" s";