You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
90 lines
2.9 KiB
90 lines
2.9 KiB
4 months ago
|
/*
|
||
|
|
* Copyright (C) 2008 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.
|
||
|
|
*/
|
||
|
|
|
||
|
|
import java.util.Arrays;
|
||
|
|
import java.util.HashSet;
|
||
|
|
import java.util.Set;
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Policy that governs which classes are preloaded.
|
||
|
|
*/
|
||
|
|
public class Policy {
|
||
|
|
|
||
|
|
/**
|
||
|
|
* No constructor - use static methods only
|
||
|
|
*/
|
||
|
|
private Policy() {}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* This location (in the build system) of the preloaded-classes file.
|
||
|
|
*/
|
||
|
|
static final String PRELOADED_CLASS_FILE
|
||
|
|
= "frameworks/base/preloaded-classes";
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Long running services. These are restricted in their contribution to the
|
||
|
|
* preloader because their launch time is less critical.
|
||
|
|
*/
|
||
|
|
// TODO: Generate this automatically from package manager.
|
||
|
|
private static final Set<String> SERVICES = new HashSet<String>(Arrays.asList(
|
||
|
|
"system_server",
|
||
|
|
"com.google.process.content",
|
||
|
|
"android.process.media",
|
||
|
|
"com.android.bluetooth",
|
||
|
|
"com.android.calendar",
|
||
|
|
"com.android.inputmethod.latin",
|
||
|
|
"com.android.phone",
|
||
|
|
"com.google.android.apps.maps.FriendService", // pre froyo
|
||
|
|
"com.google.android.apps.maps:FriendService", // froyo
|
||
|
|
"com.google.android.apps.maps.LocationFriendService",
|
||
|
|
"com.google.android.deskclock",
|
||
|
|
"com.google.process.gapps",
|
||
|
|
"android.tts"
|
||
|
|
));
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Classes which we shouldn't load from the Zygote.
|
||
|
|
*/
|
||
|
|
private static final Set<String> EXCLUDED_CLASSES
|
||
|
|
= new HashSet<String>(Arrays.asList(
|
||
|
|
// Binders
|
||
|
|
"android.app.AlarmManager",
|
||
|
|
"android.app.SearchManager",
|
||
|
|
"android.os.FileObserver",
|
||
|
|
"com.android.server.PackageManagerService$AppDirObserver",
|
||
|
|
|
||
|
|
// Threads
|
||
|
|
"android.os.AsyncTask",
|
||
|
|
"android.pim.ContactsAsyncHelper",
|
||
|
|
"android.webkit.WebViewClassic$1",
|
||
|
|
"java.lang.ProcessManager"
|
||
|
|
));
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Returns true if the given process name is a "long running" process or
|
||
|
|
* service.
|
||
|
|
*/
|
||
|
|
public static boolean isService(String processName) {
|
||
|
|
return SERVICES.contains(processName);
|
||
|
|
}
|
||
|
|
|
||
|
|
/** Reports if the given class should be preloaded. */
|
||
|
|
public static boolean isPreloadable(LoadedClass clazz) {
|
||
|
|
return clazz.systemClass && !EXCLUDED_CLASSES.contains(clazz.name)
|
||
|
|
&& !clazz.name.endsWith("$NoPreloadHolder");
|
||
|
|
}
|
||
|
|
}
|