1/* 2 * Copyright (C) 2013 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 17package com.android.server; 18 19import android.util.ArrayMap; 20 21/** 22 * This class is used in a similar way as ServiceManager, except the services registered here 23 * are not Binder objects and are only available in the same process. 24 * 25 * Once all services are converted to the SystemService interface, this class can be absorbed 26 * into SystemServiceManager. 27 * 28 * {@hide} 29 */ 30public final class LocalServices { 31 private LocalServices() {} 32 33 private static final ArrayMap<Class<?>, Object> sLocalServiceObjects = 34 new ArrayMap<Class<?>, Object>(); 35 36 /** 37 * Returns a local service instance that implements the specified interface. 38 * 39 * @param type The type of service. 40 * @return The service object. 41 */ 42 @SuppressWarnings("unchecked") 43 public static <T> T getService(Class<T> type) { 44 synchronized (sLocalServiceObjects) { 45 return (T) sLocalServiceObjects.get(type); 46 } 47 } 48 49 /** 50 * Adds a service instance of the specified interface to the global registry of local services. 51 */ 52 public static <T> void addService(Class<T> type, T service) { 53 synchronized (sLocalServiceObjects) { 54 if (sLocalServiceObjects.containsKey(type)) { 55 throw new IllegalStateException("Overriding service registration"); 56 } 57 sLocalServiceObjects.put(type, service); 58 } 59 } 60} 61