01: /*
02: * Licensed to the Apache Software Foundation (ASF) under one or more
03: * contributor license agreements. See the NOTICE file distributed with
04: * this work for additional information regarding copyright ownership.
05: * The ASF licenses this file to You under the Apache License, Version 2.0
06: * (the "License"); you may not use this file except in compliance with
07: * the License. You may obtain a copy of the License at
08: *
09: * 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: /** Implemented if you want to run a piece of code inside a thread pool.
21: */
22: public interface ThreadPoolRunnable {
23: // XXX use notes or a hashtable-like
24: // Important: ThreadData in JDK1.2 is implemented as a Hashtable( Thread -> object ),
25: // expensive.
26:
27: /** Called when this object is first loaded in the thread pool.
28: * Important: all workers in a pool must be of the same type,
29: * otherwise the mechanism becomes more complex.
30: */
31: public Object[] getInitData();
32:
33: /** This method will be executed in one of the pool's threads. The
34: * thread will be returned to the pool.
35: */
36: public void runIt(Object thData[]);
37:
38: }
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