Struct QueryStats 

pub struct QueryStats { /* private fields */ }

Implementations

impl QueryStats

pub fn new() -> Self

pub fn len(&self) -> usize

pub fn is_empty(&self) -> bool

pub fn get(&self, sql: &str) -> Option<&QueryStat>

Returns the recorded stat snapshot, if any. Does NOT promote LRU (introspection should be side-effect free).

pub fn iter(&self) -> impl Iterator<Item = (&String, &QueryStat)>

Iterate every recorded entry in deterministic (BTreeMap) order. Used by spg_stat_query virtual table.

pub fn record(&mut self, sql: &str, elapsed_us: u64, now_us: u64)

Record one execution. elapsed_us is the wall-clock micros between start and end; now_us is the wall-clock micros at completion (used for last_seen_us).

pub fn clear(&mut self)

v6.5.6 — operator-controlled clear (e.g. for ops resets).

pub fn cap(&self) -> usize

pub fn snapshot(&self) -> Vec<(String, QueryStat)>

Snapshot rows in LRU order (oldest → newest). Used by spg_stat_query ORDER BY default.

Trait Implementations

impl Clone for QueryStats

fn clone(&self) -> QueryStats

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for QueryStats

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

Formats the value using the given formatter.

impl Default for QueryStats

fn default() -> QueryStats

Returns the “default value” for a type.