Enum DrainInsertion 

#[non_exhaustive]
pub enum DrainInsertion {
    LruTail,
    Mru,
}

Where commit-drain rehydrated pages are inserted into the LRU.

LruTail makes the just-drained pages the first eviction candidates after commit; preserves any pre-transaction warm pages. The default, per spec §“Drain insertion policy”.

Mru treats drained pages as recently touched. Useful when the caller expects to read them again next transaction.

I36: #[non_exhaustive] so a third drain policy (e.g. a hint-based split between recently-touched and cold) can land without breaking callers. External match arms need a _ => … catchall.

Variants (Non-exhaustive)

Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

LruTail

Mru

Trait Implementations

impl Clone for DrainInsertion

fn clone(&self) -> DrainInsertion

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for DrainInsertion

impl Debug for DrainInsertion

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

Formats the value using the given formatter.

impl Eq for DrainInsertion

impl PartialEq for DrainInsertion

fn eq(&self, other: &DrainInsertion) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for DrainInsertion