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JoinSet

Struct JoinSet 

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pub struct JoinSet<T> { /* private fields */ }
Expand description

Tokio-free task set. See module docs for the execution model.

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impl<T: Send + 'static> JoinSet<T>

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pub fn new() -> Self

New empty set.

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pub fn spawn<F>(&mut self, future: F) -> AbortHandle
where F: Future<Output = T> + Send + 'static,

Spawn future onto its own OS thread. Requires T: Send + 'static and future: Send + 'static — same bound as tokio’s JoinSet::spawn.

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pub async fn join_next(&mut self) -> Option<Result<T, JoinError>>

Await the next task to complete. Returns None once every spawned task has been reaped.

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pub fn abort_all(&mut self)

Stop waiting on outstanding tasks; each still-running OS thread keeps executing to completion in the background (detached) since it cannot be forcibly stopped, but subsequent join_next calls report the remainder as cancelled instead of blocking on them.

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pub fn len(&self) -> usize

Number of tasks still in flight.

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pub fn is_empty(&self) -> bool

true iff len() == 0.

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impl<T: Send + 'static> Default for JoinSet<T>

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fn default() -> Self

Returns the “default value” for a type. Read more

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Blanket Implementations§

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

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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

Mutably borrows from an owned value. Read more
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T> Instrument for T

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fn instrument(self, span: Span) -> Instrumented<Self> ⓘ

Instruments this type with the provided Span, returning an Instrumented wrapper. Read more
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fn in_current_span(self) -> Instrumented<Self> ⓘ

Instruments this type with the current Span, returning an Instrumented wrapper. Read more
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impl<T, U> Into<U> for T
where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

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

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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = !

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, !>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.
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impl<T> WithSubscriber for T

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fn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self> ⓘ
where S: Into<Dispatch>,

Attaches the provided Subscriber to this type, returning a WithDispatch wrapper. Read more
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fn with_current_subscriber(self) -> WithDispatch<Self> ⓘ

Attaches the current default Subscriber to this type, returning a WithDispatch wrapper. Read more