docs: def reloader_thread(softexit=False):
      """If ``soft_exit`` is True, we use sys.exit(); otherwise ``os_exit``
      will be used to end the process.
      """
      while RUN_RELOADER:
          if code_changed():
              # force reload
              if softexit:
                  sys.exit(3)
              else:
                  os._exit(3)
          time.sleep(1)