Struct ObservationCtx 

pub struct ObservationCtx<'a> {
    pub workload: &'a str,
    pub lang: &'a str,
    pub stage: &'a str,
    pub stage_kind: SubMsStageKind,
}

Context passed to SubMsObserver::on_record for each recorded sample.

Holds borrowed references to the harness-level identity (workload, lang) and the stage’s identity (name, kind). Inputs and meta arrive via SubMsObserver::on_summarize instead of per-record to keep this struct pointer-sized (no map borrows on the hot path).

Fields

workload: &'a str

lang: &'a str

stage: &'a str

stage_kind: SubMsStageKind