1 package org.apache.commons.jcs.engine.behavior;
2
3 /*
4 * Licensed to the Apache Software Foundation (ASF) under one
5 * or more contributor license agreements. See the NOTICE file
6 * distributed with this work for additional information
7 * regarding copyright ownership. The ASF licenses this file
8 * to you under the Apache License, Version 2.0 (the
9 * "License"); you may not use this file except in compliance
10 * with the License. You may obtain a copy of the License at
11 *
12 * http://www.apache.org/licenses/LICENSE-2.0
13 *
14 * Unless required by applicable law or agreed to in writing,
15 * software distributed under the License is distributed on an
16 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
17 * KIND, either express or implied. See the License for the
18 * specific language governing permissions and limitations
19 * under the License.
20 */
21
22 /**
23 * This interface is required of all shutdown observers. These observers
24 * can observer ShutdownObservable objects. The CacheManager is the primary
25 * observable that this is intended for.
26 * <p>
27 * Most shutdown operations will occur outside this framework for now. The initial
28 * goal is to allow background threads that are not reachable through any reference
29 * that the cache manager maintains to be killed on shutdown.
30 *
31 * @author Aaron Smuts
32 *
33 */
34 public interface IShutdownObserver
35 {
36 /**
37 * Tells the observer that the observable has received a shutdown command.
38 *
39 */
40 void shutdown();
41 }