Struct Scope

pub struct Scope<'scope, 'env, T>
where 'env: 'scope,
{ /* private fields */ }
Expand description

A TaskPool scope for running one or more non-'static futures.

For more information, see TaskPool::scope.

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impl<'scope, 'env, T> Scope<'scope, 'env, T>
where T: Send + 'scope,

pub fn spawn<Fut>(&self, f: Fut)
where Fut: Future<Output = T> + 'scope + Send,

Spawns a scoped future onto the thread pool. The scope must outlive the provided future. The results of the future will be returned as a part of TaskPool::scope’s return value.

For futures that should run on the thread scope is called on Scope::spawn_on_scope should be used instead.

For more information, see TaskPool::scope.

pub fn spawn_on_scope<Fut>(&self, f: Fut)
where Fut: Future<Output = T> + 'scope + Send,

Spawns a scoped future onto the thread the scope is run on. The scope must outlive the provided future. The results of the future will be returned as a part of TaskPool::scope’s return value. Users should generally prefer to use Scope::spawn instead, unless the provided future needs to run on the scope’s thread.

For more information, see TaskPool::scope.

pub fn spawn_on_external<Fut>(&self, f: Fut)
where Fut: Future<Output = T> + 'scope + Send,

Spawns a scoped future onto the thread of the external thread executor. This is typically the main thread. The scope must outlive the provided future. The results of the future will be returned as a part of TaskPool::scope’s return value. Users should generally prefer to use Scope::spawn instead, unless the provided future needs to run on the external thread.

For more information, see TaskPool::scope.

Trait Implementations§

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impl<'scope, 'env, T> Debug for Scope<'scope, 'env, T>
where 'env: 'scope, T: Debug,

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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<'scope, 'env, T> Drop for Scope<'scope, 'env, T>
where T: 'scope,

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fn drop(&mut self)

Executes the destructor for this type. Read more

Auto Trait Implementations§

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impl<'scope, 'env, T> Freeze for Scope<'scope, 'env, T>

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impl<'scope, 'env, T> RefUnwindSafe for Scope<'scope, 'env, T>

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impl<'scope, 'env, T> Send for Scope<'scope, 'env, T>
where T: Send,

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impl<'scope, 'env, T> Sync for Scope<'scope, 'env, T>
where T: Send,

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impl<'scope, 'env, T> Unpin for Scope<'scope, 'env, T>

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impl<'scope, 'env, T> !UnwindSafe for Scope<'scope, 'env, T>

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> CompatExt for T

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fn compat(self) -> Compat<T>

Applies the [Compat] adapter by value. Read more
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fn compat_ref(&self) -> Compat<&T>

Applies the [Compat] adapter by shared reference. Read more
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fn compat_mut(&mut self) -> Compat<&mut T>

Applies the [Compat] adapter by mutable reference. Read more
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impl<T> Downcast for T
where T: Any,

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fn into_any(self: Box<T>) -> Box<dyn Any>

Converts Box<dyn Trait> (where Trait: Downcast) to Box<dyn Any>, which can then be downcast into Box<dyn ConcreteType> where ConcreteType implements Trait.
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fn into_any_rc(self: Rc<T>) -> Rc<dyn Any>

Converts Rc<Trait> (where Trait: Downcast) to Rc<Any>, which can then be further downcast into Rc<ConcreteType> where ConcreteType implements Trait.
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fn as_any(&self) -> &(dyn Any + 'static)

Converts &Trait (where Trait: Downcast) to &Any. This is needed since Rust cannot generate &Any’s vtable from &Trait’s.
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fn as_any_mut(&mut self) -> &mut (dyn Any + 'static)

Converts &mut Trait (where Trait: Downcast) to &Any. This is needed since Rust cannot generate &mut Any’s vtable from &mut Trait’s.
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impl<T> DowncastSend for T
where T: Any + Send,

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fn into_any_send(self: Box<T>) -> Box<dyn Any + Send>

Converts Box<Trait> (where Trait: DowncastSend) to Box<dyn Any + Send>, which can then be downcast into Box<ConcreteType> where ConcreteType implements Trait.
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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> Pointable for T

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const ALIGN: usize

The alignment of pointer.
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type Init = T

The type for initializers.
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unsafe fn init(init: <T as Pointable>::Init) -> usize

Initializes a with the given initializer. Read more
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unsafe fn deref<'a>(ptr: usize) -> &'a T

Dereferences the given pointer. Read more
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unsafe fn deref_mut<'a>(ptr: usize) -> &'a mut T

Mutably dereferences the given pointer. Read more
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unsafe fn drop(ptr: usize)

Drops the object pointed to by the given pointer. Read more
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impl<T> Same for T

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type Output = T

Should always be Self
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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.
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impl<V, T> VZip<V> for T
where V: MultiLane<T>,

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fn vzip(self) -> V

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

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impl<T> ErasedDestructor for T
where T: 'static,

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impl<T> MaybeSendSync for T