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RefEntry

Struct RefEntry 

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pub struct RefEntry<'a, K, V, C = BasicComparator, A: SkiplistAllocator = TursoAllocator> { /* private fields */ }
Expand description

A reference-counted entry in a skip list.

You must call release to free this type, otherwise the node will be leaked. This is because releasing the entry requires a Guard.

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impl<'a, K: 'a, V: 'a, C: 'a, A: SkiplistAllocator> RefEntry<'a, K, V, C, A>

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pub fn is_removed(&self) -> bool

Returns true if the entry is removed from the skip list.

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pub fn key(&self) -> &'a K

Returns a reference to the key.

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pub fn value(&self) -> &'a V

Returns a reference to the value.

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pub fn skiplist(&self) -> &'a SkipList<K, V, C, A>

Returns a reference to the parent SkipList

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pub fn release(self, guard: &Guard)

Releases the reference on the entry.

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pub fn release_with_pin<F>(self, pin: F)
where F: FnOnce() -> Guard,

Releases the reference of the entry, pinning the thread only when the reference count of the node becomes 0.

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impl<K, V, C, A: SkiplistAllocator> RefEntry<'_, K, V, C, A>
where C: Comparator<K>, K: Send + 'static, V: Send + 'static,

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pub fn remove(&self, guard: &Guard) -> bool

Removes the entry from the skip list.

Returns true if this call removed the entry and false if it was already removed.

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impl<K, V, C, A: SkiplistAllocator> RefEntry<'_, K, V, C, A>
where C: Comparator<K>,

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pub fn move_next(&mut self, guard: &Guard) -> bool

Moves to the next entry in the skip list.

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pub fn next(&self, guard: &Guard) -> Option<Self>

Returns the next entry in the skip list.

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pub fn move_prev(&mut self, guard: &Guard) -> bool

Moves to the previous entry in the skip list.

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pub fn prev(&self, guard: &Guard) -> Option<Self>

Returns the previous entry in the skip list.

Trait Implementations§

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impl<K, V, C, A: SkiplistAllocator> Clone for RefEntry<'_, K, V, C, A>

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fn clone(&self) -> Self

Returns a duplicate of the value. Read more
1.0.0 (const: unstable) · Source§

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl<K, V, C, A: SkiplistAllocator> Debug for RefEntry<'_, K, V, C, A>
where K: Debug, V: Debug,

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

Formats the value using the given formatter. Read more

Auto Trait Implementations§

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impl<'a, K, V, C = BasicComparator, A = TursoAllocator> !RefUnwindSafe for RefEntry<'a, K, V, C, A>

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impl<'a, K, V, C = BasicComparator, A = TursoAllocator> !UnwindSafe for RefEntry<'a, K, V, C, A>

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impl<'a, K, V, C, A> Freeze for RefEntry<'a, K, V, C, A>
where &'a SkipList<K, V, C, A>: Freeze, NodeRef<'a, K, V>: Freeze,

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impl<'a, K, V, C, A> Send for RefEntry<'a, K, V, C, A>
where &'a SkipList<K, V, C, A>: Send, NodeRef<'a, K, V>: Send,

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impl<'a, K, V, C, A> Sync for RefEntry<'a, K, V, C, A>
where &'a SkipList<K, V, C, A>: Sync, NodeRef<'a, K, V>: Sync,

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impl<'a, K, V, C, A> Unpin for RefEntry<'a, K, V, C, A>
where &'a SkipList<K, V, C, A>: Unpin, NodeRef<'a, K, V>: Unpin,

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impl<'a, K, V, C, A> UnsafeUnpin for RefEntry<'a, K, V, C, A>
where &'a SkipList<K, V, C, A>: UnsafeUnpin, NodeRef<'a, K, V>: UnsafeUnpin,

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<ST, DT> CastableFrom<ST, Initialized, Initialized> for DT
where ST: ?Sized, DT: ?Sized,

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impl<ST, DT> CastableFrom<ST, Uninit, Uninit> for DT
where ST: ?Sized, DT: ?Sized,

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impl<T> CloneToUninit for T
where T: Clone,

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unsafe fn clone_to_uninit(&self, dest: *mut u8)

🔬This is a nightly-only experimental API. (clone_to_uninit)
Performs copy-assignment from self to dest. Read more
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impl<T> ErasedDestructor for T
where T: 'static,

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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> 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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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> Read<Exclusive, BecauseExclusive> for T
where T: ?Sized,

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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> ToOwned for T
where T: Clone,

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type Owned = T

The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = !

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, !>

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