[−][src]Struct tokio::timer::Delay
A future that completes at a specified instant in time.
Instances of Delay
perform no work and complete with ()
once the
specified deadline has been reached.
Delay
has a resolution of one millisecond and should not be used for tasks
that require high-resolution timers.
Cancellation
Canceling a Delay
is done by dropping the value. No additional cleanup or
other work is required.
Methods
impl Delay
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pub fn deadline(&self) -> Instant
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Returns the instant at which the future will complete.
pub fn is_elapsed(&self) -> bool
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Returns true if the Delay
has elapsed
A Delay
is elapsed when the requested duration has elapsed.
pub fn reset(&mut self, deadline: Instant)
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Reset the Delay
instance to a new deadline.
Calling this function allows changing the instant at which the Delay
future completes without having to create new associated state.
This function can be called both before and after the future has completed.
Trait Implementations
impl FusedFuture for Delay
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fn is_terminated(&self) -> bool
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impl Debug for Delay
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impl Future for Delay
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Auto Trait Implementations
impl Send for Delay
impl Unpin for Delay
impl Sync for Delay
impl !UnwindSafe for Delay
impl !RefUnwindSafe for Delay
Blanket Implementations
impl<T> FutureExt for T where
T: Future + ?Sized,
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T: Future + ?Sized,
ⓘImportant traits for Timeout<T>fn timeout(self, timeout: Duration) -> Timeout<Self> where
Self: Sized,
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Self: Sized,
impl<T, U> Into<U> for T where
U: From<T>,
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U: From<T>,
impl<T> From<T> for T
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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,
impl<T> FutureExt for T where
T: Future + ?Sized,
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T: Future + ?Sized,
ⓘImportant traits for Map<Fut, F>fn map<U, F>(self, f: F) -> Map<Self, F> where
F: FnOnce(Self::Output) -> U,
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F: FnOnce(Self::Output) -> U,
ⓘImportant traits for Then<Fut1, Fut2, F>fn then<Fut, F>(self, f: F) -> Then<Self, Fut, F> where
F: FnOnce(Self::Output) -> Fut,
Fut: Future,
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F: FnOnce(Self::Output) -> Fut,
Fut: Future,
ⓘImportant traits for Either<A, B>fn left_future<B>(self) -> Either<Self, B> where
B: Future<Output = Self::Output>,
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B: Future<Output = Self::Output>,
ⓘImportant traits for Either<A, B>fn right_future<A>(self) -> Either<A, Self> where
A: Future<Output = Self::Output>,
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A: Future<Output = Self::Output>,
fn into_stream(self) -> IntoStream<Self>
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ⓘImportant traits for Flatten<Fut>fn flatten(self) -> Flatten<Self> where
Self::Output: Future,
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Self::Output: Future,
fn flatten_stream(self) -> FlattenStream<Self> where
Self::Output: Stream,
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Self::Output: Stream,
ⓘImportant traits for Fuse<Fut>fn fuse(self) -> Fuse<Self>
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ⓘImportant traits for Inspect<Fut, F>fn inspect<F>(self, f: F) -> Inspect<Self, F> where
F: FnOnce(&Self::Output),
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F: FnOnce(&Self::Output),
ⓘImportant traits for CatchUnwind<Fut>fn catch_unwind(self) -> CatchUnwind<Self> where
Self: UnwindSafe,
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Self: UnwindSafe,
ⓘImportant traits for Shared<Fut>fn shared(self) -> Shared<Self> where
Self::Output: Clone,
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Self::Output: Clone,
fn remote_handle(self) -> (Remote<Self>, RemoteHandle<Self::Output>)
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ⓘImportant traits for Pin<P>fn boxed<'a>(self) -> Pin<Box<dyn Future<Output = Self::Output> + 'a + Send>> where
Self: Send + 'a,
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Self: Send + 'a,
ⓘImportant traits for Pin<P>fn boxed_local<'a>(self) -> Pin<Box<dyn Future<Output = Self::Output> + 'a>> where
Self: 'a,
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Self: 'a,
ⓘImportant traits for UnitError<Fut>fn unit_error(self) -> UnitError<Self>
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ⓘImportant traits for NeverError<Fut>fn never_error(self) -> NeverError<Self>
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fn poll_unpin(&mut self, cx: &mut Context) -> Poll<Self::Output> where
Self: Unpin,
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Self: Unpin,