Struct ArcData

pub struct ArcData<T>(/* private fields */);

User-data wrapper encapsulating a Arc<T>. Does not implement MapMut.

Implementations

impl<T> ArcData<T>

pub fn into_inner(self) -> Arc<T>

Returns the internal Arc<T>. Useful for API’s that require an Arc directly, or for coercing it into a trait object.

Note that this removes the restriction of only being able to access the NativeClass instance temporarily through the Map trait; however, it should be exactly as safe as permanently storing an owned ArcData and then calling .map() on it later.

Trait Implementations

impl<T> Clone for ArcData<T>

fn clone(&self) -> Self

Returns a duplicate of the value.

const fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl<T: Debug> Debug for ArcData<T>

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl<T> Map for ArcData<T>

where T: NativeClass + Send + Sync,

type Err = Infallible

fn map<F, U>(&self, op: F) -> Result<U, Infallible>

where F: FnOnce(&T) -> U,

Maps a &T to U. Called for methods that take &self.

impl<T> UserData for ArcData<T>

where T: NativeClass + Send + Sync,

type Target = T

fn new(val: Self::Target) -> Self

Creates a new owned wrapper from a NativeClass instance.

fn into_user_data(self) -> *const c_void

Takes a native instance and returns an opaque pointer that can be used to recover it.

unsafe fn consume_user_data_unchecked(ptr: *const c_void) -> Self

Takes an opaque pointer produced by into_user_data and “consumes” it to produce the original instance, keeping the reference count.

unsafe fn clone_from_user_data_unchecked(ptr: *const c_void) -> Self

Takes an opaque pointer produced by into_user_data and “clones” it to produce the original instance, increasing the reference count.