Commit a1e4d5c9 authored by Alice Ryhl's avatar Alice Ryhl Committed by Danilo Krummrich
Browse files

rust: alloc: add Vec::clear 



Our custom Vec type is missing the stdlib method `clear`, thus add it.
It will be used in the miscdevice sample.

Reviewed-by: default avatarBenno Lossin <benno.lossin@proton.me>
Reviewed-by: default avatarTamir Duberstein <tamird@gmail.com>
Signed-off-by: default avatarAlice Ryhl <aliceryhl@google.com>
Reviewed-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Link: https://lore.kernel.org/r/20250502-vec-methods-v5-1-06d20ad9366f@google.com


Signed-off-by: default avatarDanilo Krummrich <dakr@kernel.org>
parent 88d5d6a3

rust/kernel/alloc/kvec.rs

+20 −0
Original line number Diff line number Diff line
@@ -413,6 +413,26 @@ pub fn into_raw_parts(self) -> (*mut T, usize, usize) { 
        (ptr, len, capacity)

    }



    /// Clears the vector, removing all values.

    ///

    /// Note that this method has no effect on the allocated capacity

    /// of the vector.

    ///

    /// # Examples

    ///

    /// ```

    /// let mut v = kernel::kvec![1, 2, 3]?;

    ///

    /// v.clear();

    ///

    /// assert!(v.is_empty());

    /// # Ok::<(), Error>(())

    /// ```

    #[inline]

    pub fn clear(&mut self) {

        self.truncate(0);

    }



    /// Ensures that the capacity exceeds the length by at least `additional` elements.

    ///

    /// # Examples