Struct KeyTreeSnapshot 

pub struct KeyTreeSnapshot {
    pub root: TreeNode,
    pub keys: usize,
    pub evicted: u64,
    pub unwatched: u64,
}

An immutable point-in-time view of the observed keyspace.

Carries the table’s O6 counters too, so a render loop can report what the bound cost without taking the ingest lock: root.subtree_count/bytes/ rate_hz are already the fold StatsTable::totals performs, and keys is its len. A consumer that pulled this Arc and then locked the table anyway was walking 50k entries a second time, four times a second, on the same mutex 100k samples/s need (docs/zero-copy.md).

Fields

root: TreeNode

keys: usize

evicted: u64

Keys retired to stay within the table’s bound, as of this snapshot.

unwatched: u64

Keys retired because their watch was released.

Implementations

impl KeyTreeSnapshot

pub fn build(stats: &StatsTable) -> KeyTreeSnapshot

Build from the stats table (called on the stats tick, off the per-sample path).

pub fn node(&self, path: &[&str]) -> Option<&TreeNode>

Walk to a node by its chunk path.

Trait Implementations

impl Clone for KeyTreeSnapshot

fn clone(&self) -> KeyTreeSnapshot

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for KeyTreeSnapshot

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

Formats the value using the given formatter.

impl Default for KeyTreeSnapshot

fn default() -> KeyTreeSnapshot

Returns the “default value” for a type.