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);

}