Function critical_section

user/src/bin/adder_atomic.rs:18–25

(t: &mut usize)

static mut PER_THREAD: usize = 0;

unsafe fn critical_section(t: &mut usize) {
    let a = &mut A as *mut usize;
    let cur = a.read_volatile();
    for _ in 0..500 {
        *t = (*t) * (*t) % 10007;
    }
    a.write_volatile(cur + 1);
}

fn lock() {
    while OCCUPIED