osom_asm_x86_64/models/
label.rs

1use core::sync::atomic::{AtomicU32, Ordering};
2
3#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)]
4#[must_use]
5#[repr(transparent)]
6pub struct Label {
7    value: u32,
8}
9
10static LABEL_COUNTER: AtomicU32 = AtomicU32::new(0);
11
12#[must_use]
13fn get_next_label_value() -> u32 {
14    loop {
15        let value = LABEL_COUNTER.load(Ordering::SeqCst);
16
17        assert!(value != u32::MAX, "Label counter overflow.");
18
19        if LABEL_COUNTER
20            .compare_exchange(value, value + 1, Ordering::SeqCst, Ordering::SeqCst)
21            .is_ok()
22        {
23            return value;
24        }
25    }
26}
27
28impl Label {
29    #[inline(always)]
30    pub fn new() -> Self {
31        Self {
32            value: get_next_label_value(),
33        }
34    }
35}
36
37impl Default for Label {
38    #[inline(always)]
39    fn default() -> Self {
40        Self::new()
41    }
42}
osom_asm_x86_64/models/label.rs

osom_asm_x86_64/models/
label.rs
