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调试时,程序时间不走了,一直是sec=000000000!!!什么情况



看到库函数里程序里

这样的函数,我想知道他到底是延时多少时间,然后进入调试后并且运行了一段程序,可是发现时间一直是0、、、、如图

即使全速运行也不动,为什么呢