1 /*
2 * Licensed to the Apache Software Foundation (ASF) under one or more
3 * contributor license agreements. See the NOTICE file distributed with
4 * this work for additional information regarding copyright ownership.
5 * The ASF licenses this file to You under the Apache License, Version 2.0
6 * (the "License"); you may not use this file except in compliance with
7 * the License. You may obtain a copy of the License at
8 *
9 * http://www.apache.org/licenses/LICENSE-2.0
10 *
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
16 */
17
18 package org.apache.tomcat.util.threads;
19
20
21 /** Implemented if you want to run a piece of code inside a thread pool.
22 */
23 public interface ThreadPoolRunnable {
24 // XXX use notes or a hashtable-like
25 // Important: ThreadData in JDK1.2 is implemented as a Hashtable( Thread -> object ),
26 // expensive.
27
28 /** Called when this object is first loaded in the thread pool.
29 * Important: all workers in a pool must be of the same type,
30 * otherwise the mechanism becomes more complex.
31 */
32 public Object[] getInitData();
33
34 /** This method will be executed in one of the pool's threads. The
35 * thread will be returned to the pool.
36 */
37 public void runIt(Object thData[]);
38
39 }