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rust: sync: impl {Debug,Display} for {Unique,}Arc

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This allows printing the inner data of `Arc` and its friends if the
inner data implements `Display` or `Debug`. It's useful for logging and
debugging purpose.

Signed-off-by: Boqun Feng <boqun.feng@gmail.com>
Reviewed-by: Vincenzo Palazzo <vincenzopalazzodev@gmail.com>
Reviewed-by: Gary Guo <gary@garyguo.net>
Reviewed-by: Andreas Hindborg <a.hindborg@samsung.com>
Reviewed-by: Björn Roy Baron <bjorn3_gh@protonmail.com>
Link: https://lore.kernel.org/r/20230207185216.1314638-2-boqun.feng@gmail.com
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
This commit is contained in:
Boqun Feng 2023-02-07 10:52:15 -08:00 committed by Miguel Ojeda
parent 09a9639e56
commit 00140a8308
1 changed files with 25 additions and 0 deletions
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25
rust/kernel/sync/arc.rs
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@ -22,6 +22,7 @@ use crate::{
};
use alloc::boxed::Box;
use core::{
fmt,
marker::{PhantomData, Unsize},
mem::{ManuallyDrop, MaybeUninit},
ops::{Deref, DerefMut},
@ -522,3 +523,27 @@ impl<T: ?Sized> DerefMut for UniqueArc<T> {
unsafe { &mut self.inner.ptr.as_mut().data }
}
}
impl<T: fmt::Display + ?Sized> fmt::Display for UniqueArc<T> {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
fmt::Display::fmt(self.deref(), f)
}
}
impl<T: fmt::Display + ?Sized> fmt::Display for Arc<T> {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
fmt::Display::fmt(self.deref(), f)
}
}
impl<T: fmt::Debug + ?Sized> fmt::Debug for UniqueArc<T> {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
fmt::Debug::fmt(self.deref(), f)
}
}
impl<T: fmt::Debug + ?Sized> fmt::Debug for Arc<T> {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
fmt::Debug::fmt(self.deref(), f)
}
}