Struct futures::future::WeakShared

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

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

Implementations

impl<Fut> WeakShared<Fut>

where Fut: Future,

pub 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> Clone for WeakShared<Fut>

where Fut: Future,

fn clone(&self) -> WeakShared<Fut>

Returns a copy of the value.

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

Performs copy-assignment from source.

impl<Fut> Debug for WeakShared<Fut>

where Fut: Future,

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

Formats the value using the given formatter.