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Commit 5794f230 authored by Guang Zhu's avatar Guang Zhu
Browse files

change the way test app waits for gc 

gcSoftReferences methods are being obsoleted, so we need a different
approach to wait for gc: create a CountDownLatch and release it in
a dummy object's finalizer, call gc and await on the CDL.

Change-Id: I54d9e6bc05540b16ee1f3959ace9008041ac4903
parent d63219f6

tests/DumpRenderTree/src/com/android/dumprendertree/LoadTestsAutoTest.java

+20 −10
Original line number Diff line number Diff line
@@ -16,8 +16,6 @@ 


package com.android.dumprendertree;



import dalvik.system.VMRuntime;



import android.app.Instrumentation;

import android.content.Context;

import android.content.Intent;
@@ -34,12 +32,15 @@ import java.io.IOException; 
import java.io.InputStream;

import java.io.OutputStream;

import java.io.PrintStream;

import java.util.concurrent.CountDownLatch;

import java.util.concurrent.TimeUnit;



public class LoadTestsAutoTest extends ActivityInstrumentationTestCase2<TestShellActivity> {



    private final static String LOGTAG = "LoadTest";

    private final static String LOAD_TEST_RESULT =

        Environment.getExternalStorageDirectory() + "/load_test_result.txt";

    private final static int MAX_GC_WAIT_SEC = 10;

    private boolean mFinished;

    static final String LOAD_TEST_RUNNER_FILES[] = {

        "run_page_cycler.py"
@@ -90,14 +91,23 @@ public class LoadTestsAutoTest extends ActivityInstrumentationTestCase2<TestShel 


    private void freeMem() {

        Log.v(LOGTAG, "freeMem: calling gc...");

        final VMRuntime runtime = VMRuntime.getRuntime();



        runtime.gcSoftReferences();

        runtime.gcSoftReferences();

        runtime.gcSoftReferences();

        Runtime.getRuntime().gc();

        Runtime.getRuntime().gc();



        final CountDownLatch latch = new CountDownLatch(1);

        Object dummy = new Object() {

            @Override

            protected void finalize() throws Throwable {

                latch.countDown();

                super.finalize();

            }

        };

        dummy = null;

        System.gc();

        try {

            if (!latch.await(MAX_GC_WAIT_SEC, TimeUnit.SECONDS)) {

                Log.w(LOGTAG, "gc did not happen in 10s");

            }

        } catch (InterruptedException e) {

            //ignore

        }

    }



    private void printRow(PrintStream ps, String format, Object...objs) {