struct Item<H> {
prev: Option<ItemIndex>,
next: Option<ItemIndex>,
handle: Option<H>,
}
Expand description
Stores a strong handle controlling the lifetime of the data in the LRU cache, and a doubly-linked list node specifying where in the current LRU order this element exists. These items are themselves backed by a freelist to minimize heap allocations and improve cache access patterns.
Fields§
§prev: Option<ItemIndex>
§next: Option<ItemIndex>
§handle: Option<H>
Trait Implementations§
source§impl<H> MallocSizeOf for Item<H>where
H: MallocSizeOf,
impl<H> MallocSizeOf for Item<H>where
H: MallocSizeOf,
source§fn size_of(&self, ops: &mut MallocSizeOfOps) -> usize
fn size_of(&self, ops: &mut MallocSizeOfOps) -> usize
Measure the heap usage of all descendant heap-allocated structures, but
not the space taken up by the value itself.
Auto Trait Implementations§
impl<H> Freeze for Item<H>where
H: Freeze,
impl<H> RefUnwindSafe for Item<H>where
H: RefUnwindSafe,
impl<H> Send for Item<H>where
H: Send,
impl<H> Sync for Item<H>where
H: Sync,
impl<H> Unpin for Item<H>where
H: Unpin,
impl<H> UnwindSafe for Item<H>where
H: UnwindSafe,
Blanket Implementations§
source§impl<T> BorrowMut<T> for Twhere
T: ?Sized,
impl<T> BorrowMut<T> for Twhere
T: ?Sized,
source§fn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more
source§impl<T> IntoEither for T
impl<T> IntoEither for T
source§fn into_either(self, into_left: bool) -> Either<Self, Self>
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 moresource§fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
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