timer.hh

#pragma once
 
/*
  Copyright (c) 2003-2021 Tommi Junttila
  Released under the GNU Lesser General Public License version 3.
  
  This file is part of bliss.
  
  bliss is free software: you can redistribute it and/or modify
  it under the terms of the GNU Lesser General Public License as published by
  the Free Software Foundation, version 3 of the License.
 
  bliss 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 Lesser General Public License for more details.
 
  You should have received a copy of the GNU Lesser General Public License
  along with bliss.  If not, see <http://www.gnu.org/licenses/>.
*/
 
 
#include <chrono>
 
namespace bliss {

class Timer
{
  std::chrono::high_resolution_clock::time_point start_time_;
public:
  Timer() {
    reset();
  }

  void reset() {
    start_time_ = std::chrono::high_resolution_clock::now();
  }

  double get_duration() const {
    return std::chrono::duration_cast<std::chrono::duration<double> >(std::chrono::high_resolution_clock::now() - start_time_).count();
  }
};
 
} // namespace bliss