simpletimer.h File Reference

these functions have a precision of about 0.001 ms More...

#include <time.h>
#include <sys/time.h>

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Functions
struct timeval	simpletimer_start (void)
double	simpletimer_stop (const struct timeval &start_time)

Detailed Description

these functions have a precision of about 0.001 ms

Author

mark sutton

Date

Thu 22 Jan 2009 15:51:52 GMT

Copyright (C) 2002-2019 CERN for the benefit of the ATLAS collaboration

Definition in file Trigger/TrigAnalysis/TrigInDetAnalysisUser/Analysis/src/simpletimer.h.

Function Documentation

simpletimer_start()

struct timeval simpletimer_start ( void )

inline

Definition at line 25 of file Trigger/TrigAnalysis/TrigInDetAnalysisUser/Analysis/src/simpletimer.h.

                                              {
  struct timeval start_time;
  gettimeofday(&start_time, NULL);            
  return start_time;
}

simpletimer_stop()

double simpletimer_stop ( const struct timeval & start_time )

inline

Definition at line 31 of file Trigger/TrigAnalysis/TrigInDetAnalysisUser/Analysis/src/simpletimer.h.

{
  struct timeval stop_time;
  struct timeval diff_time;
  gettimeofday(&stop_time, NULL);            
  diff_time.tv_sec  = stop_time.tv_sec  - start_time.tv_sec;
  diff_time.tv_usec = stop_time.tv_usec - start_time.tv_usec;
  return (diff_time.tv_sec*1000.0) + (diff_time.tv_usec/1000.0);
}