Struct `WeakShared`

pub struct WeakShared<Fut: Future>(/* private field */);

A weak reference to a Shared that can be upgraded much like an Arc.

Implementations

`impl<Fut: Future> WeakShared<Fut>`

fn upgrade(&self) -> Option<Shared<Fut>>

Attempts to upgrade this WeakShared into a Shared.

Returns None if all clones of the Shared have been dropped or polled to completion.

Trait Implementations

`impl<Fut: Future> Clone for WeakShared<Fut>`

fn clone(&self) -> Self

`impl<Fut: Future> Debug for WeakShared<Fut>`

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

Auto Trait Implementations

`impl<Fut> !RefUnwindSafe for WeakShared<Fut>`

`impl<Fut> !UnwindSafe for WeakShared<Fut>`

`impl<Fut> Freeze for WeakShared<Fut> where Weak<Inner<Fut>>: Freeze,`

`impl<Fut> Send for WeakShared<Fut> where Weak<Inner<Fut>>: Send,`

`impl<Fut> Sync for WeakShared<Fut> where Weak<Inner<Fut>>: Sync,`

`impl<Fut> Unpin for WeakShared<Fut> where Weak<Inner<Fut>>: Unpin,`

`impl<Fut> UnsafeUnpin for WeakShared<Fut> where Weak<Inner<Fut>>: UnsafeUnpin,`

Blanket Implementations

`impl<T> Any for WeakShared<Fut> where T: 'static + ?Sized,`

fn type_id(&self) -> TypeId

`impl<T> Borrow<T> for WeakShared<Fut> where T: ?Sized,`

fn borrow(&self) -> &T

`impl<T> BorrowMut<T> for WeakShared<Fut> where T: ?Sized,`

fn borrow_mut(&mut self) -> &mut T

`impl<T> CloneToUninit for WeakShared<Fut> where T: Clone,`

unsafe fn clone_to_uninit(&self, dest: *mut u8)

`impl<T> From<T> for WeakShared<Fut>`

fn from(t: T) -> T: Returns the argument unchanged.

`impl<T> ToOwned for WeakShared<Fut> where T: Clone,`

type Owned = T;
fn to_owned(&self) -> T
fn clone_into(&self, target: &mut T)

`impl<T, U> Into for WeakShared<Fut> where U: From<T>,`

fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of [From]<T> for U chooses to do.

`impl<T, U> TryFrom for WeakShared<Fut> where U: Into<T>,`

type Error = never;
fn try_from(value: U) -> Result<T, never>

`impl<T, U> TryInto for WeakShared<Fut> where U: TryFrom<T>,`

type Error = >::Error;
fn try_into(self) -> Result<U, >::Error>