code: public static void shutdownOutOfMemory(String msg)
    {
      freeMemoryBuffers();
      
      ShutdownSystem shutdown = _activeService.get();
      
      if (shutdown != null && ! shutdown.isShutdownOnOutOfMemory()) {
        System.err.println(msg);
        return;
      }
      else {
        shutdownActive(ExitCode.MEMORY, msg);
      }
    }
docs: Start the server shutdown