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 * @modules java.base/jdk.internal.misc
48 * java.management
49 *
50 * @run main/othervm -Xmx1g -Xms1g -XX:+UnlockExperimentalVMOptions -XX:+UnlockDiagnosticVMOptions
51 * -XX:+UseShenandoahGC -XX:ShenandoahGCHeuristics=adaptive
52 * -XX:+ShenandoahVerify
53 * TestVerifyJCStress
54 *
55 * @run main/othervm -Xmx1g -Xms1g -XX:+UnlockExperimentalVMOptions -XX:+UnlockDiagnosticVMOptions
56 * -XX:+UseShenandoahGC -XX:ShenandoahGCHeuristics=compact
57 * -XX:+ShenandoahVerify
58 * TestVerifyJCStress
59 */
60
61 import java.util.*;
62 import java.util.concurrent.*;
63 import java.util.concurrent.locks.*;
64
65 public class TestVerifyJCStress {
66
67 public static void main(String[] args) throws Exception {
68 ExecutorService service = Executors.newFixedThreadPool(
69 2,
70 r -> {
71 Thread t = new Thread(r);
72 t.setDaemon(true);
73 return t;
74 }
75 );
76
77 for (int c = 0; c < 10000; c++) {
78 final Test[] tests = new Test[10000];
79 for (int t = 0; t < tests.length; t++) {
80 tests[t] = new Test();
81 }
82
83 Future<?> f1 = service.submit(() -> {
84 IntResult2 r = new IntResult2();
85 for (Test test : tests) {
86 test.RL_Us(r);
87 }
88 });
89 Future<?> f2 = service.submit(() -> {
90 for (Test test : tests) {
91 test.WLI_Us();
92 }
93 });
94
95 f1.get();
96 f2.get();
97 }
98 }
99
100 public static class IntResult2 {
101 int r1, r2;
102 }
103
104 public static class Test {
105 final StampedLock lock = new StampedLock();
106
107 int x, y;
108
109 public void RL_Us(IntResult2 r) {
110 StampedLock lock = this.lock;
111 long stamp = lock.readLock();
112 r.r1 = x;
113 r.r2 = y;
114 lock.unlock(stamp);
115 }
116
117 public void WLI_Us() {
118 try {
119 StampedLock lock = this.lock;
120 long stamp = lock.writeLockInterruptibly();
121 x = 1;
122 y = 2;
123 lock.unlock(stamp);
124 } catch (InterruptedException e) {
125 throw new RuntimeException(e);
126 }
127 }
128 }
129
130 }