oney书P353. second paragraph,last sentence

oney书P353. second paragraph,last sentence
The requirement that you can't block while these operations finish means lavish use of completion routines to make the steps asynchronous.



既然不能阻塞，为什么还要用完成例程呢？完成例程都是有一个KeSetEvent(&event,0,false);
是的KeWaitForSingleObject(&Event,....)条件满足，但这个函数本身就导致了线程阻塞啊？