Struct Tracing 

pub struct Tracing { /* private fields */ }

A performance tracing handle for a BrowserContext.

Cheaply cloneable; all clones share the same underlying state (the browser session, an optional output path, and a started flag).

Implementations

impl Tracing

pub async fn start(&self, options: Option<TracingStartOptions>) -> Result<()>

Begin capturing a trace.

Subscribes to the browser session’s event stream before issuing Tracing.start so the later Tracing.tracingComplete event is not missed.

pub async fn stop(&self) -> Result<Vec<u8>>

Stop the in-progress trace and return the full trace as JSON bytes.

Sends Tracing.end, awaits Tracing.tracingComplete (which carries the stream handle), then drains the stream with IO.read until eof. If a path was recorded on start, the bytes are also written there.

Trait Implementations

impl Clone for Tracing

fn clone(&self) -> Tracing

Returns a duplicate of the value.

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

Performs copy-assignment from source.