Timer.cpp

Go to the documentation of this file.

// Mantid Repository : https://github.com/mantidproject/mantid
//
// Copyright © 2018 ISIS Rutherford Appleton Laboratory UKRI,
//   NScD Oak Ridge National Laboratory, European Spallation Source,
//   Institut Laue - Langevin & CSNS, Institute of High Energy Physics, CAS
// SPDX - License - Identifier: GPL - 3.0 +
//----------------------------------------------------------------------
// Includes
//----------------------------------------------------------------------
#include "MantidKernel/Timer.h"
#include <chrono>
#include <ostream>
#include <sstream>
 
namespace Mantid::Kernel {
 
Timer::Timer() : m_start(std::chrono::high_resolution_clock::now()) {}
 
float Timer::elapsed(bool reset) {
  float retval = elapsed_no_reset();
  if (reset)
    this->reset();
  return retval;
}
 
float Timer::elapsed_no_reset() const {
  const auto now = std::chrono::high_resolution_clock::now();
  std::chrono::duration<float> duration = now - m_start;
 
  return duration.count();
}
 
void Timer::reset() { m_start = std::chrono::high_resolution_clock::now(); }
 
std::string Timer::str() const {
  std::stringstream buffer;
  buffer << this->elapsed_no_reset() << "s";
  return buffer.str();
}
 
std::ostream &operator<<(std::ostream &out, const Timer &obj) {
  out << obj.str();
  return out;
}
 
} // namespace Mantid::Kernel