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SlabClaim

Struct SlabClaim 

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

A reserved slab slot for the async runtime.

Call .spawn(future) to write a task and enqueue it, or drop to return the slot to the freelist. Nothing is lost on drop — the future was never constructed.

Lifetime-free — safe because the runtime owns the slab for the duration of block_on, and SlabClaim can only be created inside block_on.

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impl SlabClaim

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pub fn spawn<F>(self, future: F) -> JoinHandle<F::Output>
where F: Future + 'static, F::Output: 'static,

Write a task into the reserved slot and enqueue it.

Consumes the claim. The future is constructed, placed in the slab slot, and pushed to the executor’s ready queue.

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pub fn as_ptr(&self) -> *mut u8

Raw pointer to the reserved slot.

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pub fn slot_size(&self) -> usize

Slot capacity in bytes.

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impl Debug for SlabClaim

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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 Drop for SlabClaim

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fn drop(&mut self)

Executes the destructor for this type. Read more
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fn pin_drop(self: Pin<&mut Self>)

🔬This is a nightly-only experimental API. (pin_ergonomics)
Execute the destructor for this type, but different to Drop::drop, it requires self to be pinned. Read more

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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.