2 Commits

Author	SHA1	Message	Date
Wedson Almeida Filho	b9ecf9b9ac	rust: types: add Opaque type ... Add the `Opaque` type, which is meant to be used with FFI objects that are never interpreted by Rust code, e.g.: struct Waiter { completion: Opaque<bindings::completion>, next: *mut Waiter, } It has the advantage that the objects don't have to be zero-initialised before calling their init functions, making the code performance closer to C. Signed-off-by: Wedson Almeida Filho <wedsonaf@gmail.com> [Reworded, adapted for upstream and applied latest changes] Signed-off-by: Miguel Ojeda <ojeda@kernel.org>	2022-12-04 01:59:16 +01:00
Wedson Almeida Filho	ba20915bae	rust: types: add Either type ... Introduce the new `types` module of the `kernel` crate with `Either` as its first type. `Either<L, R>` is a sum type that always holds either a value of type `L` (`Left` variant) or `R` (`Right` variant). For instance: struct Executor { queue: Either<BoxedQueue, &'static Queue>, } Signed-off-by: Wedson Almeida Filho <wedsonaf@gmail.com> Reviewed-by: Wei Liu <wei.liu@kernel.org> [Reworded, adapted for upstream and applied latest changes] Signed-off-by: Miguel Ojeda <ojeda@kernel.org>	2022-12-04 01:59:16 +01:00