1/*
2 * Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 */
23
24/*
25 * @test
26 * @summary Basic test for Thread(ThreadGroup,Runnable,String,long,boolean)
27 */
28
29public class ITLConstructor {
30    static InheritableThreadLocal<Integer> n = new InheritableThreadLocal<>() {
31        protected Integer initialValue() {
32            return 0;
33        }
34
35        protected Integer childValue(Integer parentValue) {
36            return parentValue + 1;
37        }
38    };
39
40    static final int CHILD_THREAD_COUNT = 10;
41
42    public static void main(String args[]) throws Exception {
43        test(true);
44        test(false);
45    }
46
47    static void test(boolean inherit) throws Exception {
48        // concurrent access to separate indexes is ok
49        int[] x = new int[CHILD_THREAD_COUNT];
50        Thread child = new Thread(Thread.currentThread().getThreadGroup(),
51                                  new AnotherRunnable(0, x, inherit),
52                                  "ITLConstructor-thread-"+(0),
53                                   0,
54                                   inherit);
55        child.start();
56        child.join(); // waits for *all* threads to complete
57
58        // Check results
59        for(int i=0; i<CHILD_THREAD_COUNT; i++) {
60            int expectedValue = 1;
61            if (inherit)
62                expectedValue = i+1;
63
64            if (x[i] != expectedValue)
65                throw (new Exception("Got x[" + i + "] = " + x[i]
66                                     + ", expected: " + expectedValue));
67        }
68    }
69
70    static class AnotherRunnable implements Runnable {
71        final int threadId;
72        final int[] x;
73        final boolean inherit;
74        AnotherRunnable(int threadId, int[] x, boolean inherit) {
75            this.threadId = threadId;
76            this.x = x;
77            this.inherit = inherit;
78        }
79
80        public void run() {
81            int itlValue = n.get();
82
83            if (threadId < CHILD_THREAD_COUNT-1) {
84                Thread child = new Thread(Thread.currentThread().getThreadGroup(),
85                                          new AnotherRunnable(threadId+1, x, inherit),
86                                          "ITLConstructor-thread-" + (threadId+1),
87                                          0,
88                                          inherit);
89                child.start();
90                try {
91                    child.join();
92                } catch(InterruptedException e) {
93                    throw(new RuntimeException("Interrupted", e));
94                }
95            }
96
97            x[threadId] = itlValue+1;
98        }
99    }
100}
101