tools.hpp

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#pragma once
 
#include <array>
#include <execinfo.h>
#include <iomanip>
#include <iostream>
#include <string>
#include <thread>
#include <vector>
#include <queue>
 
#include <fmt/format.h>
 
#include <ifw/fnd/defs/logger.hpp>
#include <ifw/fnd/defs/base.hpp>
 
 
namespace ifw::fnd::tools {
 
  // GetLoggersAsStrList(): removed during the log4cplus migration.
  //
  // The previous implementation iterated log4cplus's process-wide logger
  // registry. With the abstract ifw::fnd::Logger model there is exactly
  // ONE installed logger per process; there is no registry to enumerate,
  // so the function lost its meaning. If a downstream component needs to
  // expose information about the installed logger, it can implement a
  // small accessor on its own Logger subclass.

  class LoopFrequencyCalculator {
  public:
      explicit LoopFrequencyCalculator(size_t window_size = 100);
 
      void SetWindowSize(const size_t window_size);
 
      // Method to mark the current time (called at each loop iteration)
      void Tick();
 
      // Method to get the current calculated frequency in Hz
      double GetFrequency() const;
 
      // Reset internal buffers to start over measurement.
      void Reset();
 
  private:
      size_t m_window_size;  // Number of samples in the window
      std::queue<std::chrono::high_resolution_clock::time_point> m_timestamps;  // Timestamps queue
      std::queue<long long> m_durations;  // Durations queue (in milliseconds)
      long long m_sum_durations;  // Sum of the durations in the current window
  };
}