StopWatch.hpp

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#ifndef RCOUNTER_H
#define RCOUNTER_H

#include <sys/time.h>

class RegisterCounter
{
 public:
  typedef unsigned long long int   register_counter_t;
  RegisterCounter() { rtotal = 0; }

  void  reset() { rtotal  = 0; }
  void  start() { rbegin = rdtsc(); }

  void  stop()
    {
      rend  = rdtsc();
      rtotal +=  rend-rbegin;
    }
  register_counter_t  getCount() { return rtotal; }

 private:
  register_counter_t  rtotal, rbegin, rend;
  register_counter_t rdtsc()
    {
      register_counter_t x;
      __asm__ volatile(".byte 0x0f,0x31" : "=A" (x));
      return x;
    }
};

class StopWatch
{
 public:
  StopWatch(){ rtotal = 0; }

  void  reset(){ rtotal  = 0; }

  void  start() {
    gettimeofday(&tp, 0);
    rbegin = (double)tp.tv_sec + (1.E-06)*tp.tv_usec;
  }

  void  stop()
    {
      gettimeofday(&tp, 0);
      rend  = (double)tp.tv_sec + (1.E-06)*tp.tv_usec;
      rtotal +=  rend-rbegin;
    }

  double getSeconds() { return rtotal; }

 private:
  struct  timeval tp;
  double  rtotal, rbegin, rend;
};


#endif