Effective in 2026, to align with our trunk stable development model and ensure platform stability for the ecosystem, we will publish source code to AOSP in Q2 and Q4. For building and contributing to AOSP, we recommend utilizing android-latest-release instead of aosp-main. The android-latest-release manifest branch will always reference the most recent release pushed to AOSP. For more information, see Changes to AOSP.

PerfettoTraceRecorder

public class PerfettoTraceRecorder
extends Object

java.lang.Object
↳	com.android.tradefed.device.metric.PerfettoTraceRecorder

A utility class for recording perfetto trace on a ITestDevice.

Summary

Public constructors
`PerfettoTraceRecorder()`

Public methods
`void`	`startTrace(ITestDevice device)` Starts recording perfetto trace on device.
`File`	`stopTrace(ITestDevice device)` Stops recording perfetto trace on the device.

Public constructors

PerfettoTraceRecorder

public PerfettoTraceRecorder ()

Public methods

startTrace

public void startTrace (ITestDevice device)

Starts recording perfetto trace on device. Must call stopTrace(com.android.tradefed.device.ITestDevice) afterwards to stop the trace recording.

Parameters
`device`	`ITestDevice`: A `ITestDevice` where trace will be recorded.

stopTrace

public File stopTrace (ITestDevice device)

Stops recording perfetto trace on the device.

Must have called PerfettoTraceRecorder#startTrace(ITestDevice) before.

Parameters
`device`	`ITestDevice`: device for which to stop the recording. @Return Returns the perfetto trace file.

Returns
`File`