Struct KernelInstruments 

pub struct KernelInstruments {
    pub lane: [NanosHistogram; 3],
    pub table_full: Counter,
    pub spans_dropped: Counter,
    pub span_failures: Counter,
    /* private fields */
}

2026-09-26: Where span durations land.

Fields

lane: [NanosHistogram; 3]

table_full: Counter

2026-09-26: Kernel spans not placed: the table had no free slot, or the handle was 0.

spans_dropped: Counter

2026-09-26: Spans not started because the next ring slot was still in use.

span_failures: Counter

2026-09-26: Spans whose events could not be recorded or read.

Implementations

impl KernelInstruments

pub const fn new() -> Self

pub fn record(&self, key: SpanKey, ns: u64)

2026-09-26: Land one completed span; a lane index outside LANES is ignored.

pub fn kernels(&self) -> Vec<KernelTime>

2026-09-26: Every kernel with at least one sample.

Trait Implementations

impl Debug for KernelInstruments

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

Formats the value using the given formatter.

impl Default for KernelInstruments

fn default() -> Self

Returns the “default value” for a type.