futures::executor

Struct ThreadPool

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pub struct ThreadPool { /* private fields */ }
Expand description

A general-purpose thread pool for scheduling asynchronous tasks.

The thread pool multiplexes any number of tasks onto a fixed number of worker threads.

This type is a clonable handle to the threadpool itself. Cloning it will only create a new reference, not a new threadpool.

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impl ThreadPool

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pub fn new() -> Result<ThreadPool, Error>

Creates a new thread pool with the default configuration.

See documentation for the methods in ThreadPoolBuilder for details on the default configuration.

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pub fn builder() -> ThreadPoolBuilder

Create a default thread pool configuration, which can then be customized.

See documentation for the methods in ThreadPoolBuilder for details on the default configuration.

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pub fn run<F>( &mut self, f: F, ) -> Result<<F as Future>::Item, <F as Future>::Error>
where F: Future,

Runs the given future with this thread pool as the default executor for spawning tasks.

This function will block the calling thread until the given future is complete. While executing that future, any tasks spawned onto the default executor will be routed to this thread pool.

Note that the function will return when the provided future completes, even if some of the tasks it spawned are still running.

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impl Clone for ThreadPool

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fn clone(&self) -> ThreadPool

Returns a copy of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl Debug for ThreadPool

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

Formats the value using the given formatter. Read more
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impl Drop for ThreadPool

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fn drop(&mut self)

Executes the destructor for this type. Read more
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impl Executor for ThreadPool

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fn spawn( &mut self, f: Box<dyn Future<Item = (), Error = Never> + Send>, ) -> Result<(), SpawnError>

Spawn the given task, polling it until completion. Read more
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fn status(&self) -> Result<(), SpawnError>

Determine whether the executor is able to spawn new tasks. 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> CloneToUninit for T
where T: Clone,

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unsafe fn clone_to_uninit(&self, dst: *mut T)

🔬This is a nightly-only experimental API. (clone_to_uninit)
Performs copy-assignment from self to dst. 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> IntoEither for T

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fn into_either(self, into_left: bool) -> Either<Self, Self>

Converts self into a Left variant of Either<Self, Self> if into_left is true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more
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fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
where F: FnOnce(&Self) -> bool,

Converts self into a Left variant of Either<Self, Self> if into_left(&self) returns true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more
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impl<T> ToOwned for T
where T: Clone,

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type Owned = T

The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
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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.