Crate perfetto_recorder 

A low-overhead way to capture timings of lots of spans within your application, then at a later point, gather the traces from each thread and write them as a Perfetto trace file for viewing in the Perfetto UI.

Macros

scope

Begins a time span that ends when the current scope ends.

start_span

Begins a timing span, returning a guard, that when dropped will end the span.

Structs

CounterTrack

A handle to a counter track that can be used to record counter values.

SpanGuard

A guard that when dropped will end a span.

ThreadTraceData

Trace events that occurred on a single thread.

TraceBuilder

Used to build a trace file.

TracingDisabled

An error that is produced if [enable] has not been called, but we’re trying to build a trace.

TracingDisabledAtBuildTime

An error that is produced if [enable] is called when the “enable” feature of this crate is not active.

Enums

CounterUnit

Units for counter tracks.

Constants

EVENTS_PER_ARG

The number of events consumed by each argument.

EVENTS_PER_COUNTER

The number of events consumed by each counter value.

EVENTS_PER_SPAN

The number of events consumed by each span.

Traits

RecordArg

Types that implement this trait can be used as arguments to the [span] macro.

Functions

current_thread_reserve

Reserve capacity on the current thread for additional spans and their arguments.

is_enabled

Returns whether recording is enabled.

start

Enable recording. Can be called multiple times. Any spans emitted prior to the first call will be discarded.