Struct QueryTimings 

pub struct QueryTimings {
    pub query_id: String,
    pub phases: Vec<(String, Duration)>,
    pub total: Duration,
    /* private fields */
}

Collected timing phases for a single query.

Fields

query_id: String

phases: Vec<(String, Duration)>

total: Duration

Implementations

impl QueryTimings

pub fn begin(query_id: impl Into<String>) -> Option<Self>

Create a new QueryTimings and start the total wall-clock timer. Returns None when timing is disabled (zero overhead path).

pub fn begin_from_sql(sql: &str) -> Option<Self>

Create a QueryTimings using the first [MAX_QUERY_ID_LENGTH] chars of the SQL string as the query identifier.

pub fn start_phase(&self) -> Instant

Start timing a named phase. Returns the Instant to pass to [end_phase].

pub fn end_phase(&mut self, name: &str, since: Instant)

Record the elapsed time for a phase started with [start_phase].

pub fn add_accumulated_phase(&mut self, name: &str, duration: Duration)

Record a pre-computed duration for a phase that was accumulated across multiple iterations (e.g., per-table I/O totals).

pub fn finish(self)

Finish timing and emit the results to stderr.