Adam Lesinski | 182f73f | 2013-12-05 16:48:06 -0800 | [diff] [blame] | 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 | |
| 17 | package com.android.server; |
| 18 | |
Makoto Onuki | cc4bbeb | 2015-09-17 10:28:24 -0700 | [diff] [blame] | 19 | import com.android.internal.annotations.VisibleForTesting; |
| 20 | |
Adam Lesinski | 182f73f | 2013-12-05 16:48:06 -0800 | [diff] [blame] | 21 | import android.util.ArrayMap; |
| 22 | |
| 23 | /** |
| 24 | * This class is used in a similar way as ServiceManager, except the services registered here |
| 25 | * are not Binder objects and are only available in the same process. |
| 26 | * |
| 27 | * Once all services are converted to the SystemService interface, this class can be absorbed |
| 28 | * into SystemServiceManager. |
Adam Lesinski | b102b2c | 2013-12-20 11:46:14 -0800 | [diff] [blame] | 29 | * |
| 30 | * {@hide} |
Adam Lesinski | 182f73f | 2013-12-05 16:48:06 -0800 | [diff] [blame] | 31 | */ |
| 32 | public final class LocalServices { |
| 33 | private LocalServices() {} |
| 34 | |
| 35 | private static final ArrayMap<Class<?>, Object> sLocalServiceObjects = |
| 36 | new ArrayMap<Class<?>, Object>(); |
| 37 | |
| 38 | /** |
| 39 | * Returns a local service instance that implements the specified interface. |
| 40 | * |
| 41 | * @param type The type of service. |
| 42 | * @return The service object. |
| 43 | */ |
| 44 | @SuppressWarnings("unchecked") |
| 45 | public static <T> T getService(Class<T> type) { |
| 46 | synchronized (sLocalServiceObjects) { |
| 47 | return (T) sLocalServiceObjects.get(type); |
| 48 | } |
| 49 | } |
| 50 | |
| 51 | /** |
| 52 | * Adds a service instance of the specified interface to the global registry of local services. |
| 53 | */ |
| 54 | public static <T> void addService(Class<T> type, T service) { |
| 55 | synchronized (sLocalServiceObjects) { |
| 56 | if (sLocalServiceObjects.containsKey(type)) { |
| 57 | throw new IllegalStateException("Overriding service registration"); |
| 58 | } |
| 59 | sLocalServiceObjects.put(type, service); |
| 60 | } |
| 61 | } |
Makoto Onuki | cc4bbeb | 2015-09-17 10:28:24 -0700 | [diff] [blame] | 62 | |
| 63 | /** |
| 64 | * Remove a service instance, must be only used in tests. |
| 65 | */ |
| 66 | @VisibleForTesting |
| 67 | public static <T> void removeServiceForTest(Class<T> type) { |
| 68 | synchronized (sLocalServiceObjects) { |
| 69 | sLocalServiceObjects.remove(type); |
| 70 | } |
| 71 | } |
Adam Lesinski | 182f73f | 2013-12-05 16:48:06 -0800 | [diff] [blame] | 72 | } |