1*d57664e9SAndroid Build Coastguard Worker /* 2*d57664e9SAndroid Build Coastguard Worker * Copyright (C) 2008 The Android Open Source Project 3*d57664e9SAndroid Build Coastguard Worker * 4*d57664e9SAndroid Build Coastguard Worker * Licensed under the Apache License, Version 2.0 (the "License"); 5*d57664e9SAndroid Build Coastguard Worker * you may not use this file except in compliance with the License. 6*d57664e9SAndroid Build Coastguard Worker * You may obtain a copy of the License at 7*d57664e9SAndroid Build Coastguard Worker * 8*d57664e9SAndroid Build Coastguard Worker * http://www.apache.org/licenses/LICENSE-2.0 9*d57664e9SAndroid Build Coastguard Worker * 10*d57664e9SAndroid Build Coastguard Worker * Unless required by applicable law or agreed to in writing, software 11*d57664e9SAndroid Build Coastguard Worker * distributed under the License is distributed on an "AS IS" BASIS, 12*d57664e9SAndroid Build Coastguard Worker * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13*d57664e9SAndroid Build Coastguard Worker * See the License for the specific language governing permissions and 14*d57664e9SAndroid Build Coastguard Worker * limitations under the License. 15*d57664e9SAndroid Build Coastguard Worker */ 16*d57664e9SAndroid Build Coastguard Worker 17*d57664e9SAndroid Build Coastguard Worker import java.util.Arrays; 18*d57664e9SAndroid Build Coastguard Worker import java.util.HashSet; 19*d57664e9SAndroid Build Coastguard Worker import java.util.Set; 20*d57664e9SAndroid Build Coastguard Worker 21*d57664e9SAndroid Build Coastguard Worker /** 22*d57664e9SAndroid Build Coastguard Worker * Policy that governs which classes are preloaded. 23*d57664e9SAndroid Build Coastguard Worker */ 24*d57664e9SAndroid Build Coastguard Worker public class Policy { 25*d57664e9SAndroid Build Coastguard Worker 26*d57664e9SAndroid Build Coastguard Worker /** 27*d57664e9SAndroid Build Coastguard Worker * No constructor - use static methods only 28*d57664e9SAndroid Build Coastguard Worker */ Policy()29*d57664e9SAndroid Build Coastguard Worker private Policy() {} 30*d57664e9SAndroid Build Coastguard Worker 31*d57664e9SAndroid Build Coastguard Worker /** 32*d57664e9SAndroid Build Coastguard Worker * This location (in the build system) of the preloaded-classes file. 33*d57664e9SAndroid Build Coastguard Worker */ 34*d57664e9SAndroid Build Coastguard Worker static final String PRELOADED_CLASS_FILE 35*d57664e9SAndroid Build Coastguard Worker = "frameworks/base/preloaded-classes"; 36*d57664e9SAndroid Build Coastguard Worker 37*d57664e9SAndroid Build Coastguard Worker /** 38*d57664e9SAndroid Build Coastguard Worker * Long running services. These are restricted in their contribution to the 39*d57664e9SAndroid Build Coastguard Worker * preloader because their launch time is less critical. 40*d57664e9SAndroid Build Coastguard Worker */ 41*d57664e9SAndroid Build Coastguard Worker // TODO: Generate this automatically from package manager. 42*d57664e9SAndroid Build Coastguard Worker private static final Set<String> SERVICES = new HashSet<String>(Arrays.asList( 43*d57664e9SAndroid Build Coastguard Worker "system_server", 44*d57664e9SAndroid Build Coastguard Worker "com.google.process.content", 45*d57664e9SAndroid Build Coastguard Worker "android.process.media", 46*d57664e9SAndroid Build Coastguard Worker "com.android.bluetooth", 47*d57664e9SAndroid Build Coastguard Worker "com.android.calendar", 48*d57664e9SAndroid Build Coastguard Worker "com.android.inputmethod.latin", 49*d57664e9SAndroid Build Coastguard Worker "com.android.phone", 50*d57664e9SAndroid Build Coastguard Worker "com.google.android.apps.maps.FriendService", // pre froyo 51*d57664e9SAndroid Build Coastguard Worker "com.google.android.apps.maps:FriendService", // froyo 52*d57664e9SAndroid Build Coastguard Worker "com.google.android.apps.maps.LocationFriendService", 53*d57664e9SAndroid Build Coastguard Worker "com.google.android.deskclock", 54*d57664e9SAndroid Build Coastguard Worker "com.google.process.gapps", 55*d57664e9SAndroid Build Coastguard Worker "android.tts" 56*d57664e9SAndroid Build Coastguard Worker )); 57*d57664e9SAndroid Build Coastguard Worker 58*d57664e9SAndroid Build Coastguard Worker /** 59*d57664e9SAndroid Build Coastguard Worker * Classes which we shouldn't load from the Zygote. 60*d57664e9SAndroid Build Coastguard Worker */ 61*d57664e9SAndroid Build Coastguard Worker private static final Set<String> EXCLUDED_CLASSES 62*d57664e9SAndroid Build Coastguard Worker = new HashSet<String>(Arrays.asList( 63*d57664e9SAndroid Build Coastguard Worker // Binders 64*d57664e9SAndroid Build Coastguard Worker "android.app.AlarmManager", 65*d57664e9SAndroid Build Coastguard Worker "android.app.SearchManager", 66*d57664e9SAndroid Build Coastguard Worker "android.os.FileObserver", 67*d57664e9SAndroid Build Coastguard Worker "com.android.server.PackageManagerService$AppDirObserver", 68*d57664e9SAndroid Build Coastguard Worker 69*d57664e9SAndroid Build Coastguard Worker // Threads 70*d57664e9SAndroid Build Coastguard Worker "android.os.AsyncTask", 71*d57664e9SAndroid Build Coastguard Worker "android.pim.ContactsAsyncHelper", 72*d57664e9SAndroid Build Coastguard Worker "android.webkit.WebViewClassic$1", 73*d57664e9SAndroid Build Coastguard Worker "java.lang.ProcessManager" 74*d57664e9SAndroid Build Coastguard Worker )); 75*d57664e9SAndroid Build Coastguard Worker 76*d57664e9SAndroid Build Coastguard Worker /** 77*d57664e9SAndroid Build Coastguard Worker * Returns true if the given process name is a "long running" process or 78*d57664e9SAndroid Build Coastguard Worker * service. 79*d57664e9SAndroid Build Coastguard Worker */ isService(String processName)80*d57664e9SAndroid Build Coastguard Worker public static boolean isService(String processName) { 81*d57664e9SAndroid Build Coastguard Worker return SERVICES.contains(processName); 82*d57664e9SAndroid Build Coastguard Worker } 83*d57664e9SAndroid Build Coastguard Worker 84*d57664e9SAndroid Build Coastguard Worker /** Reports if the given class should be preloaded. */ isPreloadable(LoadedClass clazz)85*d57664e9SAndroid Build Coastguard Worker public static boolean isPreloadable(LoadedClass clazz) { 86*d57664e9SAndroid Build Coastguard Worker return clazz.systemClass && !EXCLUDED_CLASSES.contains(clazz.name) 87*d57664e9SAndroid Build Coastguard Worker && !clazz.name.endsWith("$NoPreloadHolder"); 88*d57664e9SAndroid Build Coastguard Worker } 89*d57664e9SAndroid Build Coastguard Worker } 90