Struct IdFactoryWithReuse

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pub struct IdFactoryWithReuse<T> { /* private fields */ }

Expand description

An IdFactory, but extended with a free list to allow for id reuse for ids such as BackendJobId.

If silent untracked re-use of ids is okay, consider using the cheaper IdFactory::wrapping_get method.

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impl<T> IdFactoryWithReuse<T>
where T: Into<NonZeroU64> + Ord,

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pub fn new(start: T, max: T) -> Self

Create a factory for ids in the range start..=max.

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pub const fn new_const(start: NonZeroU64, max: NonZeroU64) -> Self

Create a factory for ids in the range start..=max. Provides a less convenient API than IdFactoryWithReuse::new, but skips a type conversion that would make the function non-const.

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impl<T> IdFactoryWithReuse<T>
where T: TryFrom<NonZeroU64>,

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pub fn get(&self) -> T

Return a new or potentially reused id.

Panics if the id type overflows.

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pub unsafe fn reuse(&self, id: T)

Add an id to the free list, allowing it to be re-used on a subsequent call to IdFactoryWithReuse::get.

§Safety

The id must no longer be used. Must be a valid id that was previously returned by IdFactoryWithReuse::get.

Auto Trait Implementations§

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

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> Any for T
where T: Any,

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fn get_type_id(&self) -> TypeId

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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> 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 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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