Struct EvictionContext 

pub struct EvictionContext<'a> {
    pub candidates: &'a EvictionCandidates,
    pub sizes: &'a HashMap<Hash, u64>,
    pub segments: &'a HashMap<Hash, Segment>,
    pub total_bytes: u64,
    pub target_bytes: u64,
    pub budget: u64,
    pub cache_bytes: u64,
}

Everything a policy needs to plan one eviction sweep. The engine assembles it and never interprets the policy’s semantics — candidates is already stripped of pins and probe-holds (a deny-listed hash stays a candidate even when pinned: deny wins over pin), and segments is the generic hash -> Segment membership the engine tracks with no meaning attached.

Fields

candidates: &'a EvictionCandidates

Eligible hashes with their last-access Instant (pin- and hold-filtered; deny-listed hashes stay).

sizes: &'a HashMap<Hash, u64>

Whole-store per-hash byte size.

segments: &'a HashMap<Hash, Segment>

Generic segment membership the engine tracks (absent = Segment::Main).

total_bytes: u64

Effective footprint the sweep is deciding against.

target_bytes: u64

Evict down to this many bytes.

budget: u64

Maximum releases this sweep.

cache_bytes: u64

Configured cache size; a policy sizes its own caps from it (LRU ignores).

Trait Implementations

impl<'a> Debug for EvictionContext<'a>

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

Formats the value using the given formatter.