The default exceptional handler can block the message consumption when a single poisoned message processing is failed.

缺省异常处理程序可以在单个被破坏的消息处理失败时阻塞消息使用。

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If an interrupt keeps coming in and there is no registered handler for that device (for instance, all drivers return IRQ_NONE), then the kernel can block interrupts from that device.

如果一个中断请求不断到来而且没有注册那个设备的处理程序(例如，所有的驱动程序都返回IRQ_NONE)，内核就会忽略来自那个设备的中断。

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To create this intricate event handler, you simply add a script block to the bottom of the head element of checkout.html like the one in Listing 8.

要创建这个复杂的事件处理程序，仅需向checkout . html的head元素的底部添加一个脚本块，如清单8所示。

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