TraceProcessor

public final class TraceProcessor

import androidx.benchmark.macro.runServer
import androidx.benchmark.traceprocessor.PerfettoTrace
import androidx.benchmark.traceprocessor.TraceProcessor

// Collect the duration of all slices named "activityStart" in the trace
val activityStartDurNs =
    TraceProcessor.runServer {
        loadTrace(PerfettoTrace("/path/to/trace.perfetto-trace")) {
                query("SELECT dur FROM slice WHERE name = 'activityStart'").map {
                    it.long("dur")
                }
            }
            .toList()
    }
return activityStartDurNs

import androidx.benchmark.traceprocessor.PerfettoTrace

loadTrace(PerfettoTrace("/path/to/trace.perfetto-trace")) {
    query(
            """
        |SELECT
        |    slice.name, slice.ts, slice.dur
        |FROM slice
        |    INNER JOIN thread_track on slice.track_id = thread_track.id
        |    INNER JOIN thread USING(utid)
        |    INNER JOIN process USING(upid)
        |WHERE
        |    slice.name LIKE "Choreographer#doFrame%" AND
        |    process.name = "$packageName"
        """
                .trimMargin()
        )
        .forEach {
            // process each observed doFrame slice
            doFrameCallback(it.string("name"), it.long("ts"), it.long("dur"))
        }
}