timer.h

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#ifndef TESSERACT_COMMON_TIMER_H
#define TESSERACT_COMMON_TIMER_H
 
#include <tesseract_common/macros.h>
TESSERACT_COMMON_IGNORE_WARNINGS_PUSH
#include <chrono>
TESSERACT_COMMON_IGNORE_WARNINGS_POP
 
namespace tesseract_common
{
class Timer
{
  using Clock = std::chrono::high_resolution_clock;
 
public:
  void start()
  {
    start_time_ = Clock::now();
    running_ = true;
  }
 
  void stop()
  {
    end_time_ = Clock::now();
    running_ = false;
  }
 
  double elapsedMilliseconds() const
  {
    if (running_)
      return std::chrono::duration<double, std::milli>(Clock::now() - start_time_).count();
 
    return std::chrono::duration<double, std::milli>(end_time_ - start_time_).count();
  }
 
  double elapsedSeconds() const { return (elapsedMilliseconds() / 1000.0); }
 
private:
  std::chrono::time_point<Clock> start_time_;
  std::chrono::time_point<Clock> end_time_;
  bool running_{ false };
};
}  // namespace tesseract_common
#endif  // TESSERACT_COMMON_TIMER_H