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comparison src/examples/DiningPhil.java @ 0:61d41facf527

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initial v8 import (history reset)
author Peter Mehlitz <Peter.C.Mehlitz@nasa.gov>
date Fri, 23 Jan 2015 10:14:01 -0800
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1 /*
2 * Copyright (C) 2014, United States Government, as represented by the
3 * Administrator of the National Aeronautics and Space Administration.
4 * All rights reserved.
5 *
6 * The Java Pathfinder core (jpf-core) platform is licensed under the
7 * Apache License, Version 2.0 (the "License"); you may not use this file except
8 * in compliance with the License. You may obtain a copy of the License at
9 *
10 * http://www.apache.org/licenses/LICENSE-2.0.
11 *
12 * Unless required by applicable law or agreed to in writing, software
13 * distributed under the License is distributed on an "AS IS" BASIS,
14 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
15 * See the License for the specific language governing permissions and
16 * limitations under the License.
17 */
18
19 public class DiningPhil {
20
21 static class Fork {
22 }
23
24 static class Philosopher extends Thread {
25
26 Fork left;
27 Fork right;
28
29 public Philosopher(Fork left, Fork right) {
30 this.left = left;
31 this.right = right;
32 //start();
33 }
34
35 @Override
36 public void run() {
37 // think!
38 synchronized (left) {
39 synchronized (right) {
40 // eat!
41 }
42 }
43 }
44 }
45
46 static int nPhilosophers = 6;
47
48 public static void main(String[] args) {
49 if (args.length > 0){
50 nPhilosophers = Integer.parseInt(args[0]);
51 }
52
53 //Verify.beginAtomic();
54 Fork[] forks = new Fork[nPhilosophers];
55 for (int i = 0; i < nPhilosophers; i++) {
56 forks[i] = new Fork();
57 }
58 for (int i = 0; i < nPhilosophers; i++) {
59 Philosopher p = new Philosopher(forks[i], forks[(i + 1) % nPhilosophers]);
60 p.start();
61 }
62 //Verify.endAtomic();
63 }
64 }