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/*
* Copyright (C) 2020 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.android.launcher3.testing;
import static android.graphics.Bitmap.Config.ARGB_8888;
import static com.android.launcher3.util.Executors.MAIN_EXECUTOR;
import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.Color;
import android.os.Binder;
import android.os.Bundle;
import android.os.Debug;
import android.system.Os;
import android.view.View;
import androidx.annotation.Keep;
import com.android.launcher3.LauncherAppState;
import com.android.launcher3.LauncherSettings;
import java.util.ArrayList;
import java.util.Collection;
import java.util.LinkedList;
import java.util.concurrent.CountDownLatch;
import java.util.concurrent.TimeUnit;
/**
* Class to handle requests from tests, including debug ones.
*/
public class DebugTestInformationHandler extends TestInformationHandler {
private static LinkedList sLeaks;
private static Collection<String> sEvents;
public DebugTestInformationHandler(Context context) {
init(context);
}
private static void runGcAndFinalizersSync() {
Runtime.getRuntime().gc();
Runtime.getRuntime().runFinalization();
final CountDownLatch fence = new CountDownLatch(1);
createFinalizationObserver(fence);
try {
do {
Runtime.getRuntime().gc();
Runtime.getRuntime().runFinalization();
} while (!fence.await(100, TimeUnit.MILLISECONDS));
} catch (InterruptedException ex) {
throw new RuntimeException(ex);
}
}
// Create the observer in the scope of a method to minimize the chance that
// it remains live in a DEX/machine register at the point of the fence guard.
// This must be kept to avoid R8 inlining it.
@Keep
private static void createFinalizationObserver(CountDownLatch fence) {
new Object() {
@Override
protected void finalize() throws Throwable {
try {
fence.countDown();
} finally {
super.finalize();
}
}
};
}
@Override
public Bundle call(String method) {
final Bundle response = new Bundle();
switch (method) {
case TestProtocol.REQUEST_APP_LIST_FREEZE_FLAGS: {
return getLauncherUIProperty(Bundle::putInt,
l -> l.getAppsView().getAppsStore().getDeferUpdatesFlags());
}
case TestProtocol.REQUEST_ENABLE_DEBUG_TRACING:
TestProtocol.sDebugTracing = true;
return response;
case TestProtocol.REQUEST_DISABLE_DEBUG_TRACING:
TestProtocol.sDebugTracing = false;
return response;
case TestProtocol.REQUEST_PID: {
response.putInt(TestProtocol.TEST_INFO_RESPONSE_FIELD, Os.getpid());
return response;
}
case TestProtocol.REQUEST_TOTAL_PSS_KB: {
runGcAndFinalizersSync();
Debug.MemoryInfo mem = new Debug.MemoryInfo();
Debug.getMemoryInfo(mem);
response.putInt(TestProtocol.TEST_INFO_RESPONSE_FIELD, mem.getTotalPss());
return response;
}
case TestProtocol.REQUEST_JAVA_LEAK: {
if (sLeaks == null) sLeaks = new LinkedList();
// Allocate and dirty the memory.
final int leakSize = 1024 * 1024;
final byte[] bytes = new byte[leakSize];
for (int i = 0; i < leakSize; i += 239) {
bytes[i] = (byte) (i % 256);
}
sLeaks.add(bytes);
return response;
}
case TestProtocol.REQUEST_NATIVE_LEAK: {
if (sLeaks == null) sLeaks = new LinkedList();
// Allocate and dirty a bitmap.
final Bitmap bitmap = Bitmap.createBitmap(512, 512, ARGB_8888);
bitmap.eraseColor(Color.RED);
sLeaks.add(bitmap);
return response;
}
case TestProtocol.REQUEST_VIEW_LEAK: {
if (sLeaks == null) sLeaks = new LinkedList();
sLeaks.add(new View(mContext));
return response;
}
case TestProtocol.REQUEST_START_EVENT_LOGGING: {
sEvents = new ArrayList<>();
TestLogging.setEventConsumer(
(sequence, event) -> {
final Collection<String> events = sEvents;
if (events != null) {
synchronized (events) {
events.add(sequence + '/' + event);
}
}
});
return response;
}
case TestProtocol.REQUEST_STOP_EVENT_LOGGING: {
TestLogging.setEventConsumer(null);
sEvents = null;
return response;
}
case TestProtocol.REQUEST_GET_TEST_EVENTS: {
synchronized (sEvents) {
response.putStringArrayList(
TestProtocol.TEST_INFO_RESPONSE_FIELD, new ArrayList<>(sEvents));
}
return response;
}
case TestProtocol.REQUEST_CLEAR_DATA: {
final long identity = Binder.clearCallingIdentity();
try {
LauncherSettings.Settings.call(mContext.getContentResolver(),
LauncherSettings.Settings.METHOD_CREATE_EMPTY_DB);
MAIN_EXECUTOR.submit(() ->
LauncherAppState.getInstance(mContext).getModel().forceReload());
return response;
} finally {
Binder.restoreCallingIdentity(identity);
}
}
default:
return super.call(method);
}
}
}
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