Removing debug requests from non-debug test info handlers

Bug: 152629799
Bug: 153670015
Change-Id: I02776be811d1d3325b35880d19d25a6638f904ef

ext_tests/src/com/android/launcher3/testing/DebugTestInformationHandler.java

@@ -0,0 +1,141 @@
+/*
+ * 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 android.content.Context;
+import android.graphics.Bitmap;
+import android.graphics.Color;
+import android.os.Bundle;
+import android.os.Debug;
+import android.system.Os;
+import android.view.View;
+
+import androidx.annotation.Keep;
+
+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;
+
+    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;
+            }
+
+            default:
+                return super.call(method);
+        }
+    }
+}