IssueTracker

Component used:StartupTimingMetric
Version used:1.1.0-alpha13
Devices/Android versions reproduced on:R

测试工程说明：
测试项目为多进程项目，包名com.example.demo, 但是应用的所有UI界面实现在com.example.demo:ui进程。

问题原因分析：
getMetrics方法中调用StartupTimingQuery.getFrameSubMetrics 参数传入的是PackageName，参数来源是
Marcobenchmark.kt
val iterationResult = userspaceTrace("extract metrics") {
                metrics
                    // capture list of Map<String,Long> per metric
                    .map { it.getMetrics(Metric.CaptureInfo(
                        targetPackageName = packageName,
                        testPackageName = macrobenchPackageName,
                        startupMode = startupModeMetricHint,
                        apiLevel = Build.VERSION.SDK_INT
                    ), tracePath) }
                    // merge into one map
                    .reduce { sum, element -> sum + element }
            }
 查询语句：val queryResult = PerfettoTraceProcessor.rawQuery(
            absoluteTracePath = absoluteTracePath,
            query = getFullQuery(
                testProcessName = testPackageName,
                targetProcessName = targetPackageName
            )
        )

private fun getFullQuery(testProcessName: String, targetProcessName: String) = """
        ------ Select all startup-relevant slices from slice table
        SELECT
            slice.name as name,
            slice.ts as ts,
            slice.dur as 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 (
            (process.name LIKE "$testProcessName" AND slice.name LIKE "startActivityAndWait") OR
            (
                process.name LIKE "$targetProcessName" AND (
                    (slice.name LIKE "activityResume" AND process.pid LIKE thread.tid) OR
                    (slice.name LIKE "Choreographer#doFrame%" AND process.pid LIKE thread.tid) OR
                    (slice.name LIKE "reportFullyDrawn() for %" AND process.pid LIKE thread.tid) OR
                    (slice.name LIKE "DrawFrame%" AND thread.name LIKE "RenderThread")
                )
            ) OR
            (
                -- Signals beginning of launch event, only present in API 29+
                process.name LIKE "system_server" AND
                slice.name LIKE "MetricsLogger:launchObserverNotifyIntentStarted"
            )
        )
        ------ Add in async slices
        UNION
        SELECT
            slice.name as name,
            slice.ts as ts,
            slice.dur as dur
        FROM slice
            INNER JOIN process_track on slice.track_id = process_track.id
            INNER JOIN process USING(upid)
        WHERE (
            -- API 23+:   "launching: <target>"
            -- API 19-22: "launching"
            slice.name LIKE "launching%" AND process.name LIKE "system_server"
        )
        ORDER BY ts ASC
    """.trimIndent()

会将packagename 作为限制条件，导致查询不到结果。

对于用户，不能修改这个参数，来达到查询正确进程的目的。


修改建议：
（1）对于Metric 对象是特定进程的时候，开放参数传入指定进程名（默认值是包名）。比如：FrameTimingGfxInfoMetric，FrameTimingMetric，StartupTimingMetric。

（2）目前Metric 是sealed的，建议开放给用户，给用户更多自定义Metric 的空间。