1/*
2 * Copyright (C) 2015 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
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/**
18 * Test that daemon threads still contending for a lock don't make the runtime abort on shutdown.
19 */
20public class Main {
21
22    public final static int THREAD_COUNT = 32;
23
24    public static void main(String[] args) throws Exception {
25        Object sync = new Object();
26
27        for (int i = 0; i < THREAD_COUNT; i++) {
28            Thread t = new Thread(new Wait(sync));
29            t.setDaemon(true);
30            t.start();
31        }
32    }
33
34    private static class Wait implements Runnable {
35        private Object obj;
36
37        public Wait(Object obj) {
38            this.obj = obj;
39        }
40
41        public void run() {
42            for (;;) {
43                synchronized(obj) {
44                    try {
45                        obj.wait(1);
46                    } catch (Exception exc) {
47                        exc.printStackTrace(System.out);
48                    }
49                }
50            }
51        }
52    }
53}
54