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Commit 6045a12d authored by Riddle Hsu's avatar Riddle Hsu
Browse files

Monitor start transaction commit time of transition 

The commit time approximates the latency from the invocation of
ITransitionPlayer#onTransitionReady by core until shell applies
the start transaction. Which usually stands for the cost of
default TransitionObserver, TransitionHandler that are called in
Transitions#onTransitionReady. In other words, it is similar to
the delay between the app drawn and the start of animation.

The source is from I9845f17bcf2e0abead7299f1900d219d3ff2f66f

Bug: 370952372
Bug: 206872204
Flag: EXEMPT test
Test: atest InTaskTransitionTest
Change-Id: I2fcd1ba85137489e8118c75c6d16205ad46f5fbd
parent 8664e205

apct-tests/perftests/windowmanager/src/android/wm/InTaskTransitionTest.java

+55 −0
Original line number Diff line number Diff line
@@ -34,11 +34,20 @@ import android.view.WindowManagerGlobal; 
import org.junit.Rule;

import org.junit.Test;



import java.io.BufferedReader;

import java.io.BufferedWriter;

import java.io.IOException;

import java.io.InputStream;

import java.io.InputStreamReader;

import java.io.OutputStreamWriter;

import java.io.PrintWriter;



/** Measure the performance of warm launch activity in the same task. */

public class InTaskTransitionTest extends WindowManagerPerfTestBase

        implements RemoteCallback.OnResultListener {



    private static final long TIMEOUT_MS = 5000;

    private static final String LOG_SEPARATOR = "LOG_SEPARATOR";



    @Rule

    public final PerfManualStatusReporter mPerfStatusReporter = new PerfManualStatusReporter();
@@ -62,6 +71,7 @@ public class InTaskTransitionTest extends WindowManagerPerfTestBase 


        final ManualBenchmarkState state = mPerfStatusReporter.getBenchmarkState();

        long measuredTimeNs = 0;

        long firstStartTime = 0;



        boolean readerStarted = false;

        while (state.keepRunning(measuredTimeNs)) {
@@ -70,6 +80,10 @@ public class InTaskTransitionTest extends WindowManagerPerfTestBase 
                readerStarted = true;

            }

            final long startTime = SystemClock.elapsedRealtimeNanos();

            if (readerStarted && firstStartTime == 0) {

                firstStartTime = startTime;

                executeShellCommand("log -t " + LOG_SEPARATOR + " " + firstStartTime);

            }

            activity.startActivity(next);

            synchronized (mMetricsReader) {

                try {
@@ -89,6 +103,7 @@ public class InTaskTransitionTest extends WindowManagerPerfTestBase 
                state.addExtraResult("windowsDrawnDelayMs", metrics.mWindowsDrawnDelayMs);

            }

        }

        addExtraTransitionInfo(firstStartTime, state);

    }



    @Override
@@ -99,6 +114,46 @@ public class InTaskTransitionTest extends WindowManagerPerfTestBase 
        }

    }



    private void addExtraTransitionInfo(long startTime, ManualBenchmarkState state) {

        final ProcessBuilder pb = new ProcessBuilder("sh");

        final String startLine = String.valueOf(startTime);

        final String commitTimeStr = " commit=";

        boolean foundStartLine = false;

        try {

            final Process process = pb.start();

            final InputStream in = process.getInputStream();

            final PrintWriter out = new PrintWriter(new BufferedWriter(

                    new OutputStreamWriter(process.getOutputStream())), true /* autoFlush */);

            out.println("logcat -v brief -d *:S WindowManager:V " + LOG_SEPARATOR + ":I"

                    + " | grep -e 'Finish Transition' -e " + LOG_SEPARATOR);

            out.println("exit");



            String line;

            try (BufferedReader reader = new BufferedReader(new InputStreamReader(in))) {

                while ((line = reader.readLine()) != null) {

                    if (!foundStartLine) {

                        if (line.contains(startLine)) {

                            foundStartLine = true;

                        }

                        continue;

                    }

                    final int strPos = line.indexOf(commitTimeStr);

                    if (strPos < 0) {

                        continue;

                    }

                    final int endPos = line.indexOf("ms", strPos);

                    if (endPos > strPos) {

                        final int commitDelayMs = Math.round(Float.parseFloat(

                                line.substring(strPos + commitTimeStr.length(), endPos)));

                        state.addExtraResult("commitDelayMs", commitDelayMs);

                    }

                }

            }

        } catch (IOException e) {

            throw new RuntimeException(e);

        }

    }



    /** The test activity runs on a different process to trigger metrics logs. */

    public static class TestActivity extends Activity implements Runnable {

        static final String CALLBACK = "callback";