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Diffstat (limited to 'services/java/com/android/server/LocalServices.java')
-rw-r--r-- | services/java/com/android/server/LocalServices.java | 58 |
1 files changed, 58 insertions, 0 deletions
diff --git a/services/java/com/android/server/LocalServices.java b/services/java/com/android/server/LocalServices.java new file mode 100644 index 0000000..deff79d --- /dev/null +++ b/services/java/com/android/server/LocalServices.java @@ -0,0 +1,58 @@ +/* + * Copyright (C) 2013 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. + */ + +package com.android.server; + +import android.util.ArrayMap; + +/** + * This class is used in a similar way as ServiceManager, except the services registered here + * are not Binder objects and are only available in the same process. + * + * Once all services are converted to the SystemService interface, this class can be absorbed + * into SystemServiceManager. + */ +public final class LocalServices { + private LocalServices() {} + + private static final ArrayMap<Class<?>, Object> sLocalServiceObjects = + new ArrayMap<Class<?>, Object>(); + + /** + * Returns a local service instance that implements the specified interface. + * + * @param type The type of service. + * @return The service object. + */ + @SuppressWarnings("unchecked") + public static <T> T getService(Class<T> type) { + synchronized (sLocalServiceObjects) { + return (T) sLocalServiceObjects.get(type); + } + } + + /** + * Adds a service instance of the specified interface to the global registry of local services. + */ + public static <T> void addService(Class<T> type, T service) { + synchronized (sLocalServiceObjects) { + if (sLocalServiceObjects.containsKey(type)) { + throw new IllegalStateException("Overriding service registration"); + } + sLocalServiceObjects.put(type, service); + } + } +} |