MemoryCountersMetric

public MemoryCountersMetric(
    @NonNull String processNameSuffix,
    @NonNull String metricNameSuffix
)

public @NonNull List<@NonNull Metric.Measurement> getMeasurements(
    @NonNull Metric.CaptureInfo captureInfo,
    @NonNull TraceProcessor.Session traceSession
)

import androidx.benchmark.macro.ExperimentalMetricApi import androidx.benchmark.macro.TraceMetric import androidx.benchmark.traceprocessor.TraceProcessor /**  * Calculates latency of sections where begin and end trace points are in different processes.  *  * @param beginPointName Name of begin tracepoint.  * @param endPointName Name of end tracepoint.  * @param eventName Name of the final metric that is spit out after the test run. The metric  * name will be {$eventName}LatencyMillis.  */ @OptIn(ExperimentalMetricApi::class) class CrossProcessLatencyMetricSample(  private val beginPointName: String,  private val endPointName: String,  private val eventName: String, ) : TraceMetric() {  @OptIn(ExperimentalMetricApi::class)  override fun getMeasurements(  captureInfo: CaptureInfo,  traceSession: TraceProcessor.Session,  ): List<Measurement> {  val query =  """  INCLUDE perfetto module slices.with_context;  SELECT  event,  ts2-ts1 AS latency_in_nanos  FROM  (  (SELECT  ts AS ts1,  "event" AS event,  LOWER(TRIM(process_name)) as process_name_1  FROM thread_slice WHERE name = '${beginPointName}'  )  LEFT JOIN  (SELECT  ts AS ts2,  "event" AS event,  LOWER(TRIM(process_name)) as process_name_2  FROM thread_slice WHERE name = '${endPointName}'  )  USING (event)  )  """  .trimIndent() // maybe add checks for process name etc too in query  val rowSequence = traceSession.query(query)  // First row (or null) is returned.  val latencyResultNanos = rowSequence.firstOrNull()?.long("latency_in_nanos")  return if (latencyResultNanos != null) {  listOf(Measurement(eventName + "LatencyMillis", latencyResultNanos / 1_000_000.0))  } else {  emptyList()  }  } }