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rtic-sync: remove unnecessary with_mut, safety comment

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datdenkikniet 2025-03-23 10:27:38 +01:00 • committed by Emil Fresk
parent dae55bd7e4
commit bef2e1b9f0
2 changed files with 7 additions and 11 deletions
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8
rtic-sync/src/channel.rs
View file

@ -57,10 +57,10 @@ macro_rules! cs_access {
where where
F: FnOnce(&mut $type) -> R, F: FnOnce(&mut $type) -> R,
{ {
self.$name.with_mut(|v| { let v = self.$name.get_mut();
let v = unsafe { &mut *v }; // SAFETY: we have exclusive access due to the critical section.
f(v) let v = unsafe { v.deref() };
}) f(v)
} }
}; };
} }

10
rtic-sync/src/unsafecell.rs
View file

@ -23,19 +23,15 @@ mod core {
pub fn get_mut(&self) -> MutPtr<T> { pub fn get_mut(&self) -> MutPtr<T> {
MutPtr(self.0.get()) MutPtr(self.0.get())
} }
pub unsafe fn with_mut<F, R>(&self, f: F) -> R
where
F: FnOnce(*mut T) -> R,
{
f(self.0.get())
}
} }
pub struct MutPtr<T>(*mut T); pub struct MutPtr<T>(*mut T);
impl<T> MutPtr<T> { impl<T> MutPtr<T> {
#[allow(clippy::mut_from_ref)] #[allow(clippy::mut_from_ref)]
/// SAFETY: the caller must guarantee that the contained `*mut T` is not
/// null, and must uphold the same safety requirements as for
/// [`core::primitive::pointer::as_mut`] for the contained `*mut T`.
pub unsafe fn deref(&self) -> &mut T { pub unsafe fn deref(&self) -> &mut T {
&mut *self.0 &mut *self.0
} }