Struct HashConsStats 

pub struct HashConsStats {
    pub hits: u64,
    pub misses: u64,
    pub total: u64,
    pub unique_nodes: usize,
}

Statistics snapshot emitted by HashConsArena::stats.

Fields

hits: u64

Number of mk_* calls that found an existing node (cache hit).

misses: u64

Number of mk_* calls that inserted a new node (cache miss).

total: u64

Total number of mk_* calls (hits + misses).

unique_nodes: usize

Number of distinct nodes actually stored in the arena.

Implementations

impl HashConsStats

pub fn hit_rate(&self) -> f64

Fraction of calls that were cache hits (hits / total).

Returns 0.0 when total is zero.

pub fn dedup_ratio(&self) -> f64

Fraction of calls that resulted in a new allocation (misses / total).

Returns 0.0 when total is zero.

pub fn has_dedup(&self) -> bool

Returns true when at least one deduplication hit occurred.

Trait Implementations

impl Clone for HashConsStats

fn clone(&self) -> HashConsStats

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for HashConsStats

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

Formats the value using the given formatter.

impl Display for HashConsStats

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

Formats the value using the given formatter.

impl PartialEq for HashConsStats

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

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Copy for HashConsStats

impl StructuralPartialEq for HashConsStats