Skip to main content

LfuCache

hawdb_plan_cache

Struct LfuCache 

Source 
pub struct LfuCache<K, V> { /* private fields */ }

Implementations§

Source§

impl<K, V> LfuCache<K, V>
where K: Eq + Hash + Ord + Clone, V: Clone,

Source

pub fn new(max_entries: Option<usize>) -> Self

Source

pub fn get(&mut self, key: &K) -> Option<V>

Source

pub fn record_bypass(&mut self)

Source

pub fn insert(&mut self, key: K, value: V)

Source

pub fn stats(&self) -> PlanCacheStats

Trait Implementations§

Source§

impl<K: Clone, V: Clone> Clone for LfuCache<K, V>

Source§

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
Source§

impl<K: Debug, V: Debug> Debug for LfuCache<K, V>

Source§

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

Formats the value using the given formatter. Read more

Auto Trait Implementations§

§

impl<K, V> Freeze for LfuCache<K, V>
where HashMap<K, LfuCacheEntry<V>>: Freeze,

§

impl<K, V> RefUnwindSafe for LfuCache<K, V>
where HashMap<K, LfuCacheEntry<V>>: RefUnwindSafe,

§

impl<K, V> Send for LfuCache<K, V>
where HashMap<K, LfuCacheEntry<V>>: Send,

§

impl<K, V> Sync for LfuCache<K, V>
where HashMap<K, LfuCacheEntry<V>>: Sync,

§

impl<K, V> Unpin for LfuCache<K, V>
where HashMap<K, LfuCacheEntry<V>>: Unpin,

§

impl<K, V> UnsafeUnpin for LfuCache<K, V>
where HashMap<K, LfuCacheEntry<V>>: UnsafeUnpin,

§

impl<K, V> UnwindSafe for LfuCache<K, V>
where HashMap<K, LfuCacheEntry<V>>: UnwindSafe,

Blanket Implementations§

Source§

impl<T> Any for T
where T: 'static + ?Sized,

Source§

fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
Source§

impl<T> Borrow<T> for T
where T: ?Sized,

Source§

fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
Source§

impl<T> BorrowMut<T> for T
where T: ?Sized,

Source§

fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
Source§

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

Source§

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
Source§

impl<T> From<T> for T

Source§

fn from(t: T) -> T

Returns the argument unchanged.

Source§

impl<T, U> Into<U> for T
where U: From<T>,

Source§

fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

Source§

impl<T> RuntimeIoWavePermit for T
where T: Debug + Send,

Source§

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

Source§

type Owned = T

The resulting type after obtaining ownership.
Source§

fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
Source§

fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
Source§

impl<T, U> TryFrom<U> for T
where U: Into<T>,

Source§

type Error = !

The type returned in the event of a conversion error.
Source§

fn try_from(value: U) -> Result<T, !>

Performs the conversion.
Source§

impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

Source§

type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
Source§

fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.