Skip to main content

LruTreeBlockCache

Struct LruTreeBlockCache 

Source
pub struct LruTreeBlockCache { /* private fields */ }
Expand description

LRU-evicting TreeBlockCache keyed by logical address.

Hit/miss/insertion counters are tracked via atomics so reading stats() doesn’t contend with cache traffic.

Implementations§

Source§

impl LruTreeBlockCache

Source

pub fn new(capacity: usize) -> Self

Create a cache with capacity entries. capacity must be > 0.

Source

pub fn stats(&self) -> CacheStats

Snapshot of the current hit/miss/insertion counters.

Trait Implementations§

Source§

impl TreeBlockCache for LruTreeBlockCache

Source§

fn get(&self, addr: u64) -> Option<Arc<TreeBlock>>

Look up a tree block by logical address. Returns None on miss.
Source§

fn put(&self, addr: u64, block: Arc<TreeBlock>)

Insert a freshly-read tree block into the cache. Implementations decide eviction policy.
Source§

fn invalidate(&self, addr: u64)

Drop a single entry. Used by writers (e.g. the transaction crate during CoW) to invalidate stale blocks.

Auto Trait Implementations§

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> 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> Same for T

Source§

type Output = T

Should always be Self
Source§

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

Source§

type Error = Infallible

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

fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

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.