You can call this function in a loop to control the loop execution rate 无论何时执行该函数,她都会严格的按你所设定的时间延时。
2.
It reduces the loop execution time by overlapping the execution of successive iterations . ia - 64 is one kind of explicitly parallel instruction computing ( epic ) architectures Ia - 64是一种显式并行指令计算体系结构,它利用编译程序和处理器的协同能力来提高指令并行度。