[−][src]Struct futures_util::future::WeakShared

pub struct WeakShared<Fut: Future>(_);

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

Implementations

impl<Fut: Future> WeakShared<Fut>[src]

pub fn upgrade(&self) -> Option<Shared<Fut>>[src]

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> Debug for WeakShared<Fut>[src]

Auto Trait Implementations

impl<Fut> !RefUnwindSafe for WeakShared<Fut>

impl<Fut> Send for WeakShared<Fut> where
    Fut: Send,
    <Fut as Future>::Output: Send + Sync, 

impl<Fut> Sync for WeakShared<Fut> where
    Fut: Send,
    <Fut as Future>::Output: Send + Sync, 

impl<Fut> Unpin for WeakShared<Fut>

impl<Fut> !UnwindSafe for WeakShared<Fut>

Blanket Implementations

impl<T> Any for T where
    T: 'static + ?Sized, [src]

impl<T> Borrow<T> for T where
    T: ?Sized, [src]

impl<T> BorrowMut<T> for T where
    T: ?Sized, [src]

impl<T> From<T> for T[src]

impl<T, U> Into<U> for T where
    U: From<T>, [src]

impl<T, U> TryFrom<U> for T where
    U: Into<T>, [src]

type Error = Infallible

The type returned in the event of a conversion error.

impl<T, U> TryInto<U> for T where
    U: TryFrom<T>, [src]

type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.