StopWatch.h++

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/* ---------------------------------------------------------------------------
   commonc++ - A C++ Common Class Library
   Copyright (C) 2005-2014  Mark A Lindner

   This file is part of commonc++.

   This library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Library General Public
   License as published by the Free Software Foundation; either
   version 2 of the License, or (at your option) any later version.

   This library is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   Library General Public License for more details.

   You should have received a copy of the GNU Library General Public
   License along with this library; if not, write to the Free
   Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
   ---------------------------------------------------------------------------
*/

#ifndef __ccxx_StopWatch_hxx
#define __ccxx_StopWatch_hxx

#include <commonc++/Common.h++>

namespace ccxx {

class COMMONCPP_API StopWatch
{
 public:

  StopWatch();

  virtual ~StopWatch();

  void start();

  void stop();

  inline void pause()
  { stop(); }

  inline void resume()
  { start(); }

  void reset();

  inline uint64_t elapsedKernelTime() const
  { return(_kernelElapsed); }

  inline uint64_t elapsedUserTime() const
  { return(_userElapsed); }

  inline uint64_t elapsedRealTime() const
  { return(_realElapsed); }

  inline bool isRunning() const
  { return(_running); }

 private:

  time_ms_t _userTime;
  time_ms_t _kernelTime;
  time_ms_t _realTime;

  uint64_t _userElapsed;
  uint64_t _kernelElapsed;
  uint64_t _realElapsed;

  bool _running;

  CCXX_COPY_DECLS(StopWatch);
};

} // namespace ccxx

#endif // __ccxx_StopWatch_hxx