Struct TaskHandle

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

An opaque handle to some task which is running in the background.

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impl<T> TaskHandle<T>

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pub fn spawn<K>(task: K) -> TaskHandle<T>
where K: Task<Output = T> + UnwindSafe + Send + Sync + 'static, T: Send + Sync + 'static,

Spawn a Task in the background, returning the a TaskHandle so you can cancel it or retrieve the result later on.

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pub fn poll(&self) -> Option<Result<T, Error>>

Check if the background task has finished.

If the other end hangs up for whatever reason this will return an error.

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pub fn wait(self) -> Result<T, Error>

Block the current thread until the task has finished and returned a result.

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pub fn cancel(&self)

Cancel the background task.

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pub fn cancelled(&self) -> bool

Has this task been cancelled?

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impl<T> Drop for TaskHandle<T>

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fn drop(&mut self)

Executes the destructor for this type. Read more

Auto Trait Implementations§

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impl<T> Freeze for TaskHandle<T>

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impl<T> RefUnwindSafe for TaskHandle<T>

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impl<T> Send for TaskHandle<T>
where T: Send,

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impl<T> !Sync for TaskHandle<T>

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impl<T> Unpin for TaskHandle<T>

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impl<T> UnwindSafe for TaskHandle<T>

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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, 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 = Infallible

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

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.