Commit 00140a83 authored by Boqun Feng's avatar Boqun Feng Committed by Miguel Ojeda
Browse files

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: default avatarBoqun Feng <boqun.feng@gmail.com>
Reviewed-by: default avatarVincenzo Palazzo <vincenzopalazzodev@gmail.com>
Reviewed-by: default avatarGary Guo <gary@garyguo.net>
Reviewed-by: default avatarAndreas Hindborg <a.hindborg@samsung.com>
Reviewed-by: default avatarBjörn Roy Baron <bjorn3_gh@protonmail.com>
Link: https://lore.kernel.org/r/20230207185216.1314638-2-boqun.feng@gmail.com


Signed-off-by: default avatarMiguel Ojeda <ojeda@kernel.org>
parent 09a9639e

rust/kernel/sync/arc.rs

+25 −0
Original line number Diff line number Diff line
@@ -22,6 +22,7 @@ 
};

use alloc::boxed::Box;

use core::{

    fmt,

    marker::{PhantomData, Unsize},

    mem::{ManuallyDrop, MaybeUninit},

    ops::{Deref, DerefMut},
@@ -522,3 +523,27 @@ fn deref_mut(&mut self) -> &mut Self::Target { 
        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)

    }

}