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English

So the clock interrupt handler requests a DPC object and adds it to the end of the DPC queue which will process the dispatching when the processor's IRQL drops to DPC/Dispatch level.

Chinese

因此时钟中断服务程序请求一个DPC对象并把这个对象放在DPC队列尾部,当处理器的IRQL下降到DPC/Dispatch级别时,回去执行DPC队列中的任务。