Struct CpuProfiler 

pub struct CpuProfiler { /* private fields */ }

Available on crate feature cpu-profiling only.

Process-wide CPU profiler. Registers a perf_event_open sampler and drains raw stack traces into the trace stream on each flush cycle.

Worker attribution is left to analysis; each sample carries only its OS tid, which the viewer maps to a worker via park/unpark events.

Implementations

impl CpuProfiler

pub const SOURCE_NAME: &'static str = "cpu_profile"

Source::name of the CPU profiler. The runtime builder keys off this to decide whether the pipeline symbolizes.

pub fn start(config: CpuProfilingConfig) -> Result<CpuProfiler, Error>

Start the process-wide CPU profiler with the given config.

Trait Implementations

impl Debug for CpuProfiler

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

Formats the value using the given formatter.

impl Source for CpuProfiler

fn on_thread_start(&mut self) -> Result<(), Error>

Perf samples the whole process, so this only matters for the ctimer fallback, which arms a timer per thread.

fn flush(&mut self, ctx: &FlushContext<'_>)

Drain pending data into the trace. Called once per flush cycle.

fn on_thread_stop(&mut self)

Called when a thread stops. Per-thread sources use this to stop tracking the current thread.

fn name(&self) -> &'static str

Diagnostic name for this source (e.g. "cpu_profile", "sched").

fn segment_processor(&mut self) -> Option<Box<dyn SegmentProcessor>>

Available on crate feature pipeline only.

A segment-processing stage this source’s data needs, folded into the recorder’s default pipeline at build. Called once, at build.

fn segment_metadata(&mut self, out: &mut Vec<(String, String)>)

Append this source’s segment-metadata entries to out iff they have changed since the last call.