1 /*
2 * Copyright (c) 2017, 2020, Red Hat, Inc. 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 /*
26 * @test id=passive
27 * @summary Tests that we pass at least one jcstress-like test with all verification turned on
28 * @requires vm.gc.Shenandoah
29 * @modules java.base/jdk.internal.misc
30 * java.management
31 *
32 * @run main/othervm -Xmx1g -Xms1g -XX:+UnlockExperimentalVMOptions -XX:+UnlockDiagnosticVMOptions
33 * -XX:+UseShenandoahGC -XX:ShenandoahGCMode=passive
34 * -XX:+ShenandoahDegeneratedGC -XX:+ShenandoahVerify
35 * TestVerifyJCStress
36 *
37 * @run main/othervm -Xmx1g -Xms1g -XX:+UnlockExperimentalVMOptions -XX:+UnlockDiagnosticVMOptions
38 * -XX:+UseShenandoahGC -XX:ShenandoahGCMode=passive
39 * -XX:-ShenandoahDegeneratedGC -XX:+ShenandoahVerify
40 * TestVerifyJCStress
41 */
42
43 /*
44 * @test id=default
45 * @summary Tests that we pass at least one jcstress-like test with all verification turned on
46 * @requires vm.gc.Shenandoah
47 * @requires !vm.debug
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
62 import java.util.*;
63 import java.util.concurrent.*;
64 import java.util.concurrent.locks.*;
65
66 public class TestVerifyJCStress {
67
68 public static void main(String[] args) throws Exception {
69 ExecutorService service = Executors.newFixedThreadPool(
70 2,
71 r -> {
72 Thread t = new Thread(r);
73 t.setDaemon(true);
74 return t;
75 }
76 );
77
78 for (int c = 0; c < 10000; c++) {
79 final Test[] tests = new Test[10000];
80 for (int t = 0; t < tests.length; t++) {
81 tests[t] = new Test();
82 }
83
84 Future<?> f1 = service.submit(() -> {
85 IntResult2 r = new IntResult2();
86 for (Test test : tests) {
87 test.RL_Us(r);
88 }
89 });
90 Future<?> f2 = service.submit(() -> {
91 for (Test test : tests) {
92 test.WLI_Us();
93 }
94 });
95
96 f1.get();
97 f2.get();
98 }
99 }
100
101 public static class IntResult2 {
102 int r1, r2;
103 }
104
105 public static class Test {
106 final StampedLock lock = new StampedLock();
107
108 int x, y;
109
110 public void RL_Us(IntResult2 r) {
111 StampedLock lock = this.lock;
112 long stamp = lock.readLock();
113 r.r1 = x;
114 r.r2 = y;
115 lock.unlock(stamp);
116 }
117
118 public void WLI_Us() {
119 try {
120 StampedLock lock = this.lock;
121 long stamp = lock.writeLockInterruptibly();
122 x = 1;
123 y = 2;
124 lock.unlock(stamp);
125 } catch (InterruptedException e) {
126 throw new RuntimeException(e);
127 }
128 }
129 }
130
131 }