Messages in this thread Patch in this message | | | From | Wedson Almeida Filho <> | Subject | [PATCH 5/7] rust: sync: allow type of `self` to be `ArcBorrow<T>` | Date | Wed, 28 Dec 2022 06:03:44 +0000 |
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This allows associated functions whose `self` argument has `ArcBorrow<T>` as their type. This, in turn, allows callers to use the dot syntax to make calls.
Signed-off-by: Wedson Almeida Filho <wedsonaf@gmail.com> --- rust/kernel/sync/arc.rs | 23 +++++++++++++++++++++++ 1 file changed, 23 insertions(+)
diff --git a/rust/kernel/sync/arc.rs b/rust/kernel/sync/arc.rs index f68bfc02c81a..84f31c85a513 100644 --- a/rust/kernel/sync/arc.rs +++ b/rust/kernel/sync/arc.rs @@ -255,11 +255,34 @@ impl<T: ?Sized> Drop for Arc<T> { /// // Assert that both `obj` and `cloned` point to the same underlying object. /// assert!(core::ptr::eq(&*obj, &*cloned)); /// ``` +/// +/// Using `ArcBorrow<T>` as the type of `self`: +/// +/// ``` +/// use crate::sync::{Arc, ArcBorrow}; +/// +/// struct Example { +/// a: u32, +/// b: u32, +/// } +/// +/// impl Example { +/// fn use_reference(self: ArcBorrow<'_, Self>) { +/// // ... +/// } +/// } +/// +/// let obj = Arc::try_new(Example { a: 10, b: 20 })?; +/// obj.as_arc_borrow().use_reference(); +/// ``` pub struct ArcBorrow<'a, T: ?Sized + 'a> { inner: NonNull<ArcInner<T>>, _p: PhantomData<&'a ()>, } +// This is to allow [`ArcBorrow`] (and variants) to be used as the type of `self`. +impl<T: ?Sized> core::ops::Receiver for ArcBorrow<'_, T> {} + impl<T: ?Sized> Clone for ArcBorrow<'_, T> { fn clone(&self) -> Self { *self -- 2.34.1
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