01: /*
02: * Copyright 1999-2004 The Apache Software Foundation
03: *
04: * Licensed under the Apache License, Version 2.0 (the "License");
05: * you may not use this file except in compliance with the License.
06: * You may obtain a copy of the License at
07: *
08: * http://www.apache.org/licenses/LICENSE-2.0
09: *
10: * Unless required by applicable law or agreed to in writing, software
11: * distributed under the License is distributed on an "AS IS" BASIS,
12: * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13: * See the License for the specific language governing permissions and
14: * limitations under the License.
15: */
16:
17: package org.apache.tomcat.util.threads;
18:
19: /** Implemented if you want to run a piece of code inside a thread pool.
20: */
21: public interface ThreadPoolRunnable {
22: // XXX use notes or a hashtable-like
23: // Important: ThreadData in JDK1.2 is implemented as a Hashtable( Thread -> object ),
24: // expensive.
25:
26: /** Called when this object is first loaded in the thread pool.
27: * Important: all workers in a pool must be of the same type,
28: * otherwise the mechanism becomes more complex.
29: */
30: public Object[] getInitData();
31:
32: /** This method will be executed in one of the pool's threads. The
33: * thread will be returned to the pool.
34: */
35: public void runIt(Object thData[]);
36:
37: }
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