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authorBoqun Feng <boqun.feng@gmail.com>2023-02-07 10:52:15 -0800
committerMiguel Ojeda <ojeda@kernel.org>2023-04-10 05:05:39 +0200
commit00140a8308367208d56e93cf08fa1636202a0dc7 (patch)
tree4ee6b03b2d814a7cf6a420ee3e56a629e7f058df /rust
parent09a9639e56c01c7a00d6c0ca63f4c7c41abe075d (diff)
rust: sync: impl {Debug,Display} for {Unique,}Arc
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>
Diffstat (limited to 'rust')
-rw-r--r--rust/kernel/sync/arc.rs25
1 files changed, 25 insertions, 0 deletions
diff --git a/rust/kernel/sync/arc.rs b/rust/kernel/sync/arc.rs
index f2f1c83d72ba..a94e303217c6 100644
--- a/rust/kernel/sync/arc.rs
+++ b/rust/kernel/sync/arc.rs
@@ -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)
+ }
+}