linux 환경에서 select를 사용한 Sleep함수

#include <sys/select.h>

#include <sys/time.h>

#include <sys/types.h>

/*Sleep milliseconds

*/

void Sleep_ms(long ms)

{

       struct timeval stTimeVal;

       stTimeVal.tv_sec = ms / 1000;

       ms -= (stTimeVal.tv_sec * 1000);

       stTimeVal.tv_usec = ms * 1000;

       select(0, 0, 0, 0, &stTimeVal);

}

/*Sleep microseconds

*/

void Sleep_usec(long usec)

{

       struct timeval stTimeVal;

       stTimeVal.tv_sec = usec / 1000000;

       usec -= (stTimeVal.tv_sec * 1000000);

       stTimeVal.tv_usec = usec;

       select(0, 0, 0, 0, &stTimeVal);

}