alternative for sleep function

Question

I have implemented following in my application.

for(i=0;!stopThroughButtons && i<totalMovements;i++){
        [NSThread detachNewThreadSelector:@selector(moveNeedle) toTarget:self withObject:nil];
        sleep(0.3);
    }

Here the sleep is a function with argument of unsigned int type.

Sleep method uses seconds to sleep.

I want to give the timing in milliseconds to sleep.

Which best alternate is available?

Answer 1

Two options:
int usleep(useconds_t useconds) will use microseconds
int nanosleep(const struct timespec *rqtp, struct timespec *rmtp) will use nanoseconds