88 lines
2.8 KiB
Java
88 lines
2.8 KiB
Java
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/*
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* Copyright (C) 2008 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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import java.util.Arrays;
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import java.util.HashSet;
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import java.util.Set;
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/**
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* Policy that governs which classes are preloaded.
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*/
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public class Policy {
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/**
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* No constructor - use static methods only
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*/
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private Policy() {}
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/**
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* This location (in the build system) of the preloaded-classes file.
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*/
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static final String PRELOADED_CLASS_FILE
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= "frameworks/base/preloaded-classes";
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/**
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* Long running services. These are restricted in their contribution to the
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* preloader because their launch time is less critical.
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*/
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// TODO: Generate this automatically from package manager.
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private static final Set<String> SERVICES = new HashSet<String>(Arrays.asList(
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"system_server",
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"com.google.process.content",
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"android.process.media",
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"com.android.bluetooth",
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"com.android.calendar",
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"com.android.inputmethod.latin",
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"com.android.phone",
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"com.google.android.apps.maps.FriendService", // pre froyo
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"com.google.android.apps.maps:FriendService", // froyo
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"com.google.android.apps.maps.LocationFriendService",
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"com.google.android.deskclock",
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"com.google.process.gapps",
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"android.tts"
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));
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/**
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* Classes which we shouldn't load from the Zygote.
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*/
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private static final Set<String> EXCLUDED_CLASSES
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= new HashSet<String>(Arrays.asList(
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// Binders
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"android.app.AlarmManager",
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"android.app.SearchManager",
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"android.os.FileObserver",
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"com.android.server.PackageManagerService$AppDirObserver",
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// Threads
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"android.os.AsyncTask",
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"android.pim.ContactsAsyncHelper",
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"java.lang.ProcessManager"
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));
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/**
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* Returns true if the given process name is a "long running" process or
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* service.
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*/
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public static boolean isService(String processName) {
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return SERVICES.contains(processName);
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}
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/**Reports if the given class should be preloaded. */
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public static boolean isPreloadable(LoadedClass clazz) {
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return clazz.systemClass && !EXCLUDED_CLASSES.contains(clazz.name);
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}
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}
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