pub struct TaskQueue<T> {
    queue: BinaryHeap<ScheduledTask<T>>,
}

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§queue: BinaryHeap<ScheduledTask<T>>

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impl<T> TaskQueue<T>

Implements a queue allowing for scheduling tasks for some time in the future.

Does not actually execute any tasks, is used for ordering in time only.

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pub fn new() -> Self

Creates an empty queue.

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pub fn schedule_in(&mut self, task: T, delay: Duration)

Schedules task for after delay.

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pub async fn pop(&mut self) -> Option<T>

Awaits for the first and most overdue task and returns it. Returns None if there are no tasks.

§Cancel safety

This method is cancellation safe. If you use it as the event in a tokio::select! statement and some other branch completes first, then it is guaranteed that the TaskQueue state will be unchanged.

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async fn sleep_until_the_next_task_is_ready(&self)

Sleeps until some task is ready to be executed, or returns immediately if there are no tasks. Cancellation safe, since doesn’t mutate &self.

Trait Implementations§

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impl<T: Clone> Clone for TaskQueue<T>

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fn clone(&self) -> TaskQueue<T>

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<T> Debug for TaskQueue<T>

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

Formats the value using the given formatter. Read more
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impl<T: Default> Default for TaskQueue<T>

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fn default() -> TaskQueue<T>

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

Auto Trait Implementations§

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impl<T> RefUnwindSafe for TaskQueue<T>
where T: RefUnwindSafe,

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

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impl<T> Sync for TaskQueue<T>
where T: Sync,

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impl<T> Unpin for TaskQueue<T>
where T: Unpin,

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impl<T> UnwindSafe for TaskQueue<T>
where T: UnwindSafe,

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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> Any for T
where T: Any,

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impl<T> AnySync for T
where T: Any + Send + Sync,

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fn into_any_arc(self: Arc<T>) -> Arc<dyn Any + Sync + Send>

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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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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> CheckedConversion for T

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fn checked_from<T>(t: T) -> Option<Self>
where Self: TryFrom<T>,

Convert from a value of T into an equivalent instance of Option<Self>. Read more
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fn checked_into<T>(self) -> Option<T>
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Consume self to return Some equivalent value of Option<T>. Read more
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where T: Clone,

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fn from(t: T) -> 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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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>

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Calls U::from(self).

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

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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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Cast reference.
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Cast reference.
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Cast mutable reference.
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Cast mutable reference.
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Get a reference to the inner from the outer.

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Get a mutable reference to the inner from the outer.

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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 drop(ptr: usize)

Drops the object pointed to by the given pointer. Read more
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type Output = T

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where S: Into<Dispatch>,

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