| package org.apache.commons.jcs.engine.behavior; |
| |
| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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. |
| */ |
| |
| /** |
| * ShutdownObservers can observe ShutdownObservable objects. |
| * The CacheManager is the primary observable that this is intended for. |
| * <p> |
| * Most shutdown operations will occur outside this framework for now. The initial |
| * goal is to allow background threads that are not reachable through any reference |
| * that the cache manager maintains to be killed on shutdown. |
| * <p> |
| * Perhaps the composite cache itself should be the observable object. |
| * It doesn't make much of a difference. There are some problems with |
| * region by region shutdown. Some auxiliaries are local. They will |
| * need to track when every region has shutdown before doing things like |
| * closing the socket with a lateral. |
| * <p> |
| * @author Aaron Smuts |
| * |
| */ |
| public interface IShutdownObservable |
| { |
| |
| /** |
| * Registers an observer with the observable object. |
| * @param observer |
| */ |
| void registerShutdownObserver( IShutdownObserver observer ); |
| |
| /** |
| * Deregisters the observer with the observable. |
| * |
| * @param observer |
| */ |
| void deregisterShutdownObserver( IShutdownObserver observer ); |
| |
| } |