Struct Poller

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pub struct Poller<'a> { /* private fields */ }
Expand description

Poller

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impl<'a> Poller<'a>

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pub fn poll_one(&self) -> bool

Poll one task

return false if no more task to be polled

note that, when this function return false, it doesn’t mean that is the queue is empty, some task maybe is in pending state

use wait to check if the queue is already empty

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pub async fn wait(&self) -> bool

Wait

return true if there is a task to be polled, or false if the queue becomes empty

Auto Trait Implementations§

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impl<'a> Freeze for Poller<'a>

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impl<'a> RefUnwindSafe for Poller<'a>

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impl<'a> !Send for Poller<'a>

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impl<'a> !Sync for Poller<'a>

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impl<'a> Unpin for Poller<'a>

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impl<'a> UnwindSafe for Poller<'a>

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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> 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, 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.