stopwatch.h

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// Author(s): Maurice Laveaux
// Copyright: see the accompanying file COPYING or copy at
// https://github.com/mCRL2org/mCRL2/blob/master/COPYING
//
// Distributed under the Boost Software License, Version 1.0.
// (See accompanying file LICENSE_1_0.txt or copy at
// http://www.boost.org/LICENSE_1_0.txt)
//
 
#ifndef MCRL2_UTILITIES_STOPWATCH_H_
#define MCRL2_UTILITIES_STOPWATCH_H_
 
#include <chrono>
 
class stopwatch
{
public:
  stopwatch()
  {
    reset();
  }
 
  void reset()
  {
    m_timestamp = std::chrono::steady_clock::now();
  }
 
  long long time()
  {
    return std::chrono::duration_cast<std::chrono::milliseconds>(std::chrono::steady_clock::now() - m_timestamp).count();
  }
 
  double seconds()
  {
    return std::chrono::duration<double>(std::chrono::steady_clock::now() - m_timestamp).count();
  }
 
private:
  std::chrono::time_point<std::chrono::steady_clock> m_timestamp;
};
 
#endif // MCRL2_UTILITIES_STOPWATCH_H_