[−][src]Struct futures::task::WakerRef
A Waker
that is only valid for a given lifetime.
Note: this type implements Deref<Target = Waker>
,
so it can be used to get a &Waker
.
Methods
impl<'a> WakerRef<'a>
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pub fn new(waker: &'a Waker) -> WakerRef<'a>
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pub fn new_unowned(waker: ManuallyDrop<Waker>) -> WakerRef<'a>
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Methods from Deref<Target = Waker>
pub fn wake_by_ref(&self)
1.36.0[src]
Wake up the task associated with this Waker
without consuming the Waker
.
This is similar to wake
, but may be slightly less efficient in the case
where an owned Waker
is available. This method should be preferred to
calling waker.clone().wake()
.
pub fn will_wake(&self, other: &Waker) -> bool
1.36.0[src]
Returns true
if this Waker
and another Waker
have awoken the same task.
This function works on a best-effort basis, and may return false even
when the Waker
s would awaken the same task. However, if this function
returns true
, it is guaranteed that the Waker
s will awaken the same task.
This function is primarily used for optimization purposes.
Trait Implementations
Auto Trait Implementations
impl<'a> Send for WakerRef<'a>
impl<'a> Sync for WakerRef<'a>
impl<'a> Unpin for WakerRef<'a>
impl<'a> RefUnwindSafe for WakerRef<'a>
impl<'a> UnwindSafe for WakerRef<'a>
Blanket Implementations
impl<T> From<T> for T
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impl<T, U> Into<U> for T where
U: From<T>,
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U: From<T>,
impl<T, U> TryFrom<U> for T where
U: Into<T>,
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U: Into<T>,
type Error = Infallible
The type returned in the event of a conversion error.
fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>
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impl<T, U> TryInto<U> for T where
U: TryFrom<T>,
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U: TryFrom<T>,
type Error = <U as TryFrom<T>>::Error
The type returned in the event of a conversion error.
fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>
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impl<T> BorrowMut<T> for T where
T: ?Sized,
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T: ?Sized,
ⓘImportant traits for &'_ mut Ffn borrow_mut(&mut self) -> &mut T
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impl<T> Borrow<T> for T where
T: ?Sized,
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T: ?Sized,
impl<T> Any for T where
T: 'static + ?Sized,
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T: 'static + ?Sized,