#ifndef _utl_RealTimeStopwatch_h_
#define _utl_RealTimeStopwatch_h_

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

namespace utl {

  /**
     \class RealTimeStopwatch RealTimeStopwatch.h "utl/RealTimeStopwatch.h"

     Note: constructor starts the stopwatch. Use Reset() before starting it
     at the later time.

     \author  D. Veberic
     \date    16 May 2007
     \version $Id$
  */

  class RealTimeStopwatch {

  public:
    RealTimeStopwatch(const bool start = true);

    void Reset();
    void Start();
    /// returns time since last call to Start()
    double Stop();
    double GetTime();

  private:
    bool fIsStopped;
    struct timeval fStart;
    double fTimeSum;

  };

} // namespace utl

#endif

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