Piece

foyer_memory

Struct Piece 

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pub struct Piece<K, V, P> { /* private fields */ }
Expand description

A piece of record that is irrelevant to the eviction algorithm.

With Piece, the disk cache doesn’t need to consider the eviction generic type.

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impl<K, V, P> Piece<K, V, P>

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pub fn new<E>(record: Arc<Record<E>>) -> Self
where E: Eviction<Key = K, Value = V, Properties = P>,

Create a record piece from an record wrapped by Arc.

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pub fn key(&self) -> &K

Get the key of the record.

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pub fn value(&self) -> &V

Get the value of the record.

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pub fn hash(&self) -> u64

Get the hash of the record.

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pub fn properties(&self) -> &P

Get the properties of the record.

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impl<K, V, P> Clone for Piece<K, V, P>

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fn clone(&self) -> Self

Returns a duplicate 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<K, V, P> Debug for Piece<K, V, P>

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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<K, V, P> Drop for Piece<K, V, P>

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fn drop(&mut self)

Executes the destructor for this type. Read more
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impl<K, V, P> From<Piece<K, V, P>> for FetchTarget<K, V, P>

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fn from(piece: Piece<K, V, P>) -> Self

Converts to this type from the input type.
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impl<K, V, P> Send for Piece<K, V, P>
where K: Key, V: Value, P: Properties,

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impl<K, V, P> Sync for Piece<K, V, P>
where K: Key, V: Value, P: Properties,

Auto Trait Implementations§

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impl<K, V, P> Freeze for Piece<K, V, P>

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impl<K, V, P> RefUnwindSafe for Piece<K, V, P>
where K: RefUnwindSafe, V: RefUnwindSafe, P: RefUnwindSafe,

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impl<K, V, P> Unpin for Piece<K, V, P>

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impl<K, V, P> UnwindSafe for Piece<K, V, P>
where K: RefUnwindSafe, V: RefUnwindSafe, P: RefUnwindSafe,

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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> 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> 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> Scope for T

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fn with<F, R>(self, f: F) -> R
where Self: Sized, F: FnOnce(Self) -> R,

Scoped with ownership.
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fn with_ref<F, R>(&self, f: F) -> R
where F: FnOnce(&Self) -> R,

Scoped with reference.
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fn with_mut<F, R>(&mut self, f: F) -> R
where F: FnOnce(&mut Self) -> R,

Scoped with mutable reference.
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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 = 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.
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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
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impl<T> Value for T
where T: Send + Sync + 'static,