Timer.h

#ifndef __TIMER_H__
#define __TIMER_H__

#include <sys/time.h>

// HOLGER 22Jan06 : changed all suseconds_t to off_t 
//
//
class Timer
{
  private:

    off_t _usecs;

    off_t _usecs_at_mark;

    struct timeval _tstart;
    
    struct timeval _tend;
    
    struct timezone _tz;

    bool _running;

  public:

    Timer() { reset(); }
    
    void reset() { _usecs = _usecs_at_mark = 0; _running = false; }

    void mark() { stop(); _usecs_at_mark = _usecs; cont(); }

    inline void start()
    {
      _usecs = _usecs_at_mark = 0;
      gettimeofday(&_tstart, &_tz);
      _running = true;
    }

    inline void cont()
    { 
      if (_running == false)
      {
        gettimeofday(&_tstart, &_tz);
        _running = true;
      }
    }
    
    inline void stop()
    {
      gettimeofday(&_tend, &_tz);
      if(_running){_usecs += (off_t)(1000000) * (off_t)(_tend.tv_sec -
                             _tstart.tv_sec) + (off_t)(_tend.tv_usec -
                             _tstart.tv_usec);}
      _running = false;
        //return _usecs;
    }
    // (13.10.10 by baumgari for testing codebase/utility/TimerStatistics.h)
    // Sets the totalTime manually.
    inline void setUsecs(off_t usecs) { _usecs = usecs; }
    inline void setMsecs(off_t msecs) { _usecs = msecs * (off_t)(1000); }
    inline void setSecs(off_t secs) { _usecs = secs * (off_t)(1000000); }

    off_t value() const { return _usecs; } /* in microseconds */
    off_t usecs() const { return _usecs; } /* in microseconds */
    off_t msecs() const { return _usecs/1000; } /* in milliseconds */
    float secs() const { return _usecs/1000000.0; } /* in seconds */

    off_t usecs_since_mark() const { return _usecs - _usecs_at_mark; }
};

#endif