blob: 408aea338c6a424519eebe0d26aa792a1fc738f7 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
|
use std::cell::UnsafeCell;
use std::fmt;
use std::ops::Deref;
/// `AtomicU8` providing an additional `load_unsync` function.
pub(crate) struct AtomicU8 {
inner: UnsafeCell<std::sync::atomic::AtomicU8>,
}
unsafe impl Send for AtomicU8 {}
unsafe impl Sync for AtomicU8 {}
impl AtomicU8 {
pub(crate) const fn new(val: u8) -> AtomicU8 {
let inner = UnsafeCell::new(std::sync::atomic::AtomicU8::new(val));
AtomicU8 { inner }
}
}
impl Deref for AtomicU8 {
type Target = std::sync::atomic::AtomicU8;
fn deref(&self) -> &Self::Target {
// safety: it is always safe to access `&self` fns on the inner value as
// we never perform unsafe mutations.
unsafe { &*self.inner.get() }
}
}
impl fmt::Debug for AtomicU8 {
fn fmt(&self, fmt: &mut fmt::Formatter<'_>) -> fmt::Result {
self.deref().fmt(fmt)
}
}
|
