Wedson Almeida Filho
92a655ae00
rust: sync: allow type of self to be ArcBorrow<T>
...
This allows associated functions whose `self` argument has
`ArcBorrow<T>` as their type. This, in turn, allows callers to use the
dot syntax to make calls.
Signed-off-by: Wedson Almeida Filho <wedsonaf@gmail.com >
Reviewed-by: Alice Ryhl <aliceryhl@google.com >
Reviewed-by: Gary Guo <gary@garyguo.net >
Reviewed-by: Vincenzo Palazzo <vincenzopalazzodev@gmail.com >
Acked-by: Boqun Feng <boqun.feng@gmail.com >
Signed-off-by: Miguel Ojeda <ojeda@kernel.org >
2023-01-16 23:48:06 +01:00
Wedson Almeida Filho
17f671602c
rust: sync: introduce ArcBorrow
...
This allows us to create references to a ref-counted allocation without
double-indirection and that still allow us to increment the refcount to
a new `Arc<T>`.
Signed-off-by: Wedson Almeida Filho <wedsonaf@gmail.com >
Reviewed-by: Alice Ryhl <aliceryhl@google.com >
Acked-by: Boqun Feng <boqun.feng@gmail.com >
Reviewed-by: Gary Guo <gary@garyguo.net >
Reviewed-by: Vincenzo Palazzo <vincenzopalazzodev@gmail.com >
Signed-off-by: Miguel Ojeda <ojeda@kernel.org >
2023-01-16 23:47:57 +01:00
Wedson Almeida Filho
f75cb6fce4
rust: sync: allow coercion from Arc<T> to Arc<U>
...
The coercion is only allowed if `U` is a compatible dynamically-sized
type (DST). For example, if we have some type `X` that implements trait
`Y`, then this allows `Arc<X>` to be coerced into `Arc<dyn Y>`.
Suggested-by: Gary Guo <gary@garyguo.net >
Signed-off-by: Wedson Almeida Filho <wedsonaf@gmail.com >
Reviewed-by: Alice Ryhl <aliceryhl@google.com >
Reviewed-by: Gary Guo <gary@garyguo.net >
Reviewed-by: Vincenzo Palazzo <vincenzopalazzodev@gmail.com >
Acked-by: Boqun Feng <boqun.feng@gmail.com >
Signed-off-by: Miguel Ojeda <ojeda@kernel.org >
2023-01-16 22:20:24 +01:00
Wedson Almeida Filho
53528772fb
rust: sync: allow type of self to be Arc<T> or variants
...
This allows associated functions whose `self` argument has `Arc<T>` or
variants as their type. This, in turn, allows callers to use the dot
syntax to make calls.
Signed-off-by: Wedson Almeida Filho <wedsonaf@gmail.com >
Reviewed-by: Alice Ryhl <aliceryhl@google.com >
Reviewed-by: Gary Guo <gary@garyguo.net >
Reviewed-by: Vincenzo Palazzo <vincenzopalazzodev@gmail.com >
Acked-by: Boqun Feng <boqun.feng@gmail.com >
Signed-off-by: Miguel Ojeda <ojeda@kernel.org >
2023-01-16 22:20:18 +01:00
Wedson Almeida Filho
9dc0436550
rust: sync: add Arc for ref-counted allocations
...
This is a basic implementation of `Arc` backed by C's `refcount_t`. It
allows Rust code to idiomatically allocate memory that is ref-counted.
Cc: Will Deacon <will@kernel.org >
Cc: Peter Zijlstra <peterz@infradead.org >
Cc: Boqun Feng <boqun.feng@gmail.com >
Cc: Mark Rutland <mark.rutland@arm.com >
Signed-off-by: Wedson Almeida Filho <wedsonaf@gmail.com >
Reviewed-by: Alice Ryhl <aliceryhl@google.com >
Reviewed-by: Gary Guo <gary@garyguo.net >
Reviewed-by: Vincenzo Palazzo <vincenzopalazzodev@gmail.com >
Acked-by: Boqun Feng <boqun.feng@gmail.com >
Signed-off-by: Miguel Ojeda <ojeda@kernel.org >
2023-01-16 22:20:03 +01:00
