1 /* 2 * Copyright (C) 2009 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package android.os; 18 19 import java.util.Map; 20 21 public final class ServiceManager { 22 23 /** 24 * Returns a reference to a service with the given name. 25 * 26 * @param name the name of the service to get 27 * @return a reference to the service, or <code>null</code> if the service doesn't exist 28 */ getService(String name)29 public static IBinder getService(String name) { 30 return null; 31 } 32 33 /** 34 * Is not supposed to return null, but that is fine for layoutlib. 35 */ getServiceOrThrow(String name)36 public static IBinder getServiceOrThrow(String name) throws ServiceNotFoundException { 37 throw new ServiceNotFoundException(name); 38 } 39 40 /** 41 * Place a new @a service called @a name into the service 42 * manager. 43 * 44 * @param name the name of the new service 45 * @param service the service object 46 */ addService(String name, IBinder service)47 public static void addService(String name, IBinder service) { 48 // pass 49 } 50 51 /** 52 * Retrieve an existing service called @a name from the 53 * service manager. Non-blocking. 54 */ checkService(String name)55 public static IBinder checkService(String name) { 56 return null; 57 } 58 59 /** 60 * Return a list of all currently running services. 61 * @return an array of all currently running services, or <code>null</code> in 62 * case of an exception 63 */ listServices()64 public static String[] listServices() { 65 // actual implementation returns null sometimes, so it's ok 66 // to return null instead of an empty list. 67 return null; 68 } 69 70 /** 71 * This is only intended to be called when the process is first being brought 72 * up and bound by the activity manager. There is only one thread in the process 73 * at that time, so no locking is done. 74 * 75 * @param cache the cache of service references 76 * @hide 77 */ initServiceCache(Map<String, IBinder> cache)78 public static void initServiceCache(Map<String, IBinder> cache) { 79 // pass 80 } 81 82 /** 83 * Exception thrown when no service published for given name. This might be 84 * thrown early during boot before certain services have published 85 * themselves. 86 * 87 * @hide 88 */ 89 public static class ServiceNotFoundException extends Exception { 90 // identical to the original implementation ServiceNotFoundException(String name)91 public ServiceNotFoundException(String name) { 92 super("No service published for: " + name); 93 } 94 } 95 } 96