1 /*
2 * Copyright (c) 2017, 2020, Red Hat, Inc. All rights reserved.
3 * Copyright Amazon.com Inc. or its affiliates. All Rights Reserved.
4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
5 *
6 * This code is free software; you can redistribute it and/or modify it
7 * under the terms of the GNU General Public License version 2 only, as
8 * published by the Free Software Foundation.
9 *
10 * This code is distributed in the hope that it will be useful, but WITHOUT
11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
12 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
13 * version 2 for more details (a copy is included in the LICENSE file that
14 * accompanied this code).
15 *
16 * You should have received a copy of the GNU General Public License version
17 * 2 along with this work; if not, write to the Free Software Foundation,
18 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
19 *
20 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
21 * or visit www.oracle.com if you need additional information or have any
22 * questions.
23 *
24 */
25
26 /*
27 * @test id=passive
28 * @summary Tests that we pass at least one jcstress-like test with all verification turned on
29 * @requires vm.gc.Shenandoah
30 * @modules java.base/jdk.internal.misc
31 * java.management
32 *
33 * @run main/othervm -Xmx1g -Xms1g -XX:+UnlockExperimentalVMOptions -XX:+UnlockDiagnosticVMOptions
34 * -XX:+UseShenandoahGC -XX:ShenandoahGCMode=passive
35 * -XX:+ShenandoahDegeneratedGC -XX:+ShenandoahVerify
36 * TestVerifyJCStress
37 *
38 * @run main/othervm -Xmx1g -Xms1g -XX:+UnlockExperimentalVMOptions -XX:+UnlockDiagnosticVMOptions
39 * -XX:+UseShenandoahGC -XX:ShenandoahGCMode=passive
40 * -XX:-ShenandoahDegeneratedGC -XX:+ShenandoahVerify
41 * TestVerifyJCStress
42 */
43
44 /*
45 * @test id=default
46 * @summary Tests that we pass at least one jcstress-like test with all verification turned on
47 * @requires vm.gc.Shenandoah
48 * @modules java.base/jdk.internal.misc
49 * java.management
50 *
51 * @run main/othervm -Xmx1g -Xms1g -XX:+UnlockExperimentalVMOptions -XX:+UnlockDiagnosticVMOptions
52 * -XX:+UseShenandoahGC -XX:ShenandoahGCHeuristics=adaptive
53 * -XX:+ShenandoahVerify
54 * TestVerifyJCStress
55 *
56 * @run main/othervm -Xmx1g -Xms1g -XX:+UnlockExperimentalVMOptions -XX:+UnlockDiagnosticVMOptions
57 * -XX:+UseShenandoahGC -XX:ShenandoahGCHeuristics=compact
58 * -XX:+ShenandoahVerify
59 * TestVerifyJCStress
60 *
61 * @run main/othervm -Xmx1g -Xms1g -XX:+UnlockExperimentalVMOptions -XX:+UnlockDiagnosticVMOptions
62 * -XX:+UseShenandoahGC -XX:ShenandoahGCHeuristics=adaptive -XX:ShenandoahGCMode=generational
63 * -XX:+ShenandoahVerify
64 * TestVerifyJCStress
65 */
66
67 import java.util.*;
68 import java.util.concurrent.*;
69 import java.util.concurrent.locks.*;
70
71 public class TestVerifyJCStress {
72
73 public static void main(String[] args) throws Exception {
74 ExecutorService service = Executors.newFixedThreadPool(
75 2,
76 r -> {
77 Thread t = new Thread(r);
78 t.setDaemon(true);
79 return t;
80 }
81 );
82
83 for (int c = 0; c < 10000; c++) {
84 final Test[] tests = new Test[10000];
85 for (int t = 0; t < tests.length; t++) {
86 tests[t] = new Test();
87 }
88
89 Future<?> f1 = service.submit(() -> {
90 IntResult2 r = new IntResult2();
91 for (Test test : tests) {
92 test.RL_Us(r);
93 }
94 });
95 Future<?> f2 = service.submit(() -> {
96 for (Test test : tests) {
97 test.WLI_Us();
98 }
99 });
100
101 f1.get();
102 f2.get();
103 }
104 }
105
106 public static class IntResult2 {
107 int r1, r2;
108 }
109
110 public static class Test {
111 final StampedLock lock = new StampedLock();
112
113 int x, y;
114
115 public void RL_Us(IntResult2 r) {
116 StampedLock lock = this.lock;
117 long stamp = lock.readLock();
118 r.r1 = x;
119 r.r2 = y;
120 lock.unlock(stamp);
121 }
122
123 public void WLI_Us() {
124 try {
125 StampedLock lock = this.lock;
126 long stamp = lock.writeLockInterruptibly();
127 x = 1;
128 y = 2;
129 lock.unlock(stamp);
130 } catch (InterruptedException e) {
131 throw new RuntimeException(e);
132 }
133 }
134 }
135
136 }