def _StatusUpdateThreadMain(self):
    """Main function of the status update thread."""
    while self._status_update_active:
      # Make a local copy of the PIDs in case the dict is changed by
      # the main thread.
      for pid in list(self._process_information_per_pid.keys()):
        self._CheckStatusWorkerProcess(pid)

      self._UpdateForemanProcessStatus()

      tasks_status = self._task_manager.GetStatusInformation()
      if self._task_queue_profiler:
        self._task_queue_profiler.Sample(tasks_status)

      self._processing_status.UpdateTasksStatus(tasks_status)

      if self._status_update_callback:
        self._status_update_callback(self._processing_status)

      time.sleep(self._STATUS_UPDATE_INTERVAL)