1 //
2 // ========================================================================
3 // Copyright (c) 1995-2016 Mort Bay Consulting Pty. Ltd.
4 // ------------------------------------------------------------------------
5 // All rights reserved. This program and the accompanying materials
6 // are made available under the terms of the Eclipse Public License v1.0
7 // and Apache License v2.0 which accompanies this distribution.
8 //
9 // The Eclipse Public License is available at
10 // http://www.eclipse.org/legal/epl-v10.html
11 //
12 // The Apache License v2.0 is available at
13 // http://www.opensource.org/licenses/apache2.0.php
14 //
15 // You may elect to redistribute this code under either of these licenses.
16 // ========================================================================
17 //
18
19 package org.eclipse.jetty.util.thread.strategy;
20
21 import java.util.concurrent.Executor;
22
23 import org.eclipse.jetty.util.thread.ExecutionStrategy;
24
25 /**
26 * <p>A strategy where the caller thread iterates over task production, submitting each
27 * task to an {@link Executor} for execution.</p>
28 */
29 public class ProduceConsume implements ExecutionStrategy, Runnable
30 {
31 private final Producer _producer;
32 private final Executor _executor;
33
34 public ProduceConsume(Producer producer, Executor executor)
35 {
36 this._producer = producer;
37 this._executor = executor;
38 }
39
40 @Override
41 public void execute()
42 {
43 // Iterate until we are complete.
44 while (true)
45 {
46 // Produce a task.
47 Runnable task = _producer.produce();
48
49 if (task == null)
50 break;
51
52 // run the task.
53 task.run();
54 }
55 }
56
57 @Override
58 public void dispatch()
59 {
60 _executor.execute(this);
61 }
62
63 @Override
64 public void run()
65 {
66 execute();
67 }
68 }