DataQuality/HanConfigGenerator/src/simpletimer.h

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// emacs: this is -*- c++ -*-
//
//   @file    simpletimer.h        
//            these functions have a precision of about 0.001 ms
//
//
//   Copyright (C) 2007 M.Sutton (sutt@hep.ucl.ac.uk)    
//
//   $Id: simpletimer.h, v0.0   Thu 22 Jan 2009 15:51:52 GMT sutt $
 
 
#ifndef __SIMPLETIMER_H
#define __SIMPLETIMER_H
 
#include <time.h>
#include <sys/time.h>
 
//#ifdef __cplusplus
//extern "C" {
//#endif
 
 
inline struct timeval simpletimer_start(void) {
  struct timeval start_time;
  gettimeofday(&start_time, NULL);            
  return start_time;
}
 
inline double simpletimer_stop(const struct timeval& start_time)
{
  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);
}
 
 
//#ifdef __cplusplus
//}
//#endif
 
#endif /* __SIMPLETIMER_H */