public interface OrderedEventExecutor extends EventExecutor
EventExecutor的标记界面,它将以有序/串行方式处理所有提交的任务。 
      inEventLoop, inEventLoop, newFailedFuture, newProgressivePromise, newPromise, newSucceededFuture, next, parentisShuttingDown, iterator, schedule, schedule, scheduleAtFixedRate, scheduleWithFixedDelay, shutdown, shutdownGracefully, shutdownGracefully, shutdownNow, submit, submit, submit, terminationFutureCopyright © 2008–2018 The Netty Project. All rights reserved.