Linux应用层的精确延迟函数

#include <stdio.h>#include <unistd.h>#include <sys/time.h>void mdelay(int ms_count){struct timeval tpStart, tpEnd; float timeUse;gettimeofday(&tpStart, NULL);do { gettimeofday(&tpEnd, NULL); timeUse = 1000 * (tpEnd.tv_sec - tpStart.tv_sec) + 0.001 * (tpEnd.tv_usec - tpStart.tv_usec);} while(timeUse < ms_count);}