1 /*
2 * Copyright (c) 2017, 2018, 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 TestVerifyJCStress
27 * @summary Tests that we pass at least one jcstress-like test with all verification turned on
28 * @key gc
29 * @requires vm.gc.Shenandoah & !vm.graal.enabled
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 TestVerifyJCStress
46 * @summary Tests that we pass at least one jcstress-like test with all verification turned on
47 * @key gc
48 * @requires vm.gc.Shenandoah & !vm.graal.enabled
49 * @modules java.base/jdk.internal.misc
50 * java.management
51 *
52 * @run main/othervm -Xmx1g -Xms1g -XX:+UnlockExperimentalVMOptions -XX:+UnlockDiagnosticVMOptions
53 * -XX:+UseShenandoahGC -XX:ShenandoahGCHeuristics=adaptive
54 * -XX:+ShenandoahVerify -XX:+IgnoreUnrecognizedVMOptions -XX:+ShenandoahVerifyOptoBarriers
55 * TestVerifyJCStress
56 *
57 * @run main/othervm -Xmx1g -Xms1g -XX:+UnlockExperimentalVMOptions -XX:+UnlockDiagnosticVMOptions
58 * -XX:+UseShenandoahGC -XX:ShenandoahGCHeuristics=compact
59 * -XX:+ShenandoahVerify -XX:+IgnoreUnrecognizedVMOptions -XX:+ShenandoahVerifyOptoBarriers
60 * TestVerifyJCStress
61 */
62
63 import java.util.*;
64 import java.util.concurrent.*;
65 import java.util.concurrent.locks.*;
66
67 public class TestVerifyJCStress {
68
69 public static void main(String[] args) throws Exception {
70 ExecutorService service = Executors.newFixedThreadPool(
71 2,
72 r -> {
73 Thread t = new Thread(r);
74 t.setDaemon(true);
75 return t;
76 }
77 );
78
79 for (int c = 0; c < 10000; c++) {
80 final Test[] tests = new Test[10000];
81 for (int t = 0; t < tests.length; t++) {
82 tests[t] = new Test();
83 }
84
85 Future<?> f1 = service.submit(() -> {
86 IntResult2 r = new IntResult2();
87 for (Test test : tests) {
88 test.RL_Us(r);
89 }
90 });
91 Future<?> f2 = service.submit(() -> {
92 for (Test test : tests) {
93 test.WLI_Us();
94 }
95 });
96
97 f1.get();
98 f2.get();
99 }
100 }
101
102 public static class IntResult2 {
103 int r1, r2;
104 }
105
106 public static class Test {
107 final StampedLock lock = new StampedLock();
108
109 int x, y;
110
111 public void RL_Us(IntResult2 r) {
112 StampedLock lock = this.lock;
113 long stamp = lock.readLock();
114 r.r1 = x;
115 r.r2 = y;
116 lock.unlock(stamp);
117 }
118
119 public void WLI_Us() {
120 try {
121 StampedLock lock = this.lock;
122 long stamp = lock.writeLockInterruptibly();
123 x = 1;
124 y = 2;
125 lock.unlock(stamp);
126 } catch (InterruptedException e) {
127 throw new RuntimeException(e);
128 }
129 }
130 }
131
132 }