1 /*
2 * Copyright (c) 2020, 2022, 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 */
31 * @run main/othervm
32 * -Xbootclasspath/a:.
33 * -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI
34 * -XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC -XX:ShenandoahGCMode=satb
35 * gc.shenandoah.TestReferenceRefersToShenandoah
36 */
37
38 /* @test id=satb-100
39 * @requires vm.gc.Shenandoah
40 * @library /test/lib
41 * @build jdk.test.whitebox.WhiteBox
42 * @modules java.base
43 * @run main jdk.test.lib.helpers.ClassFileInstaller jdk.test.whitebox.WhiteBox
44 * @run main/othervm
45 * -Xbootclasspath/a:.
46 * -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI
47 * -XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC -XX:ShenandoahGCMode=satb -XX:ShenandoahGarbageThreshold=100 -Xmx100m
48 * gc.shenandoah.TestReferenceRefersToShenandoah
49 */
50
51 import java.lang.ref.PhantomReference;
52 import java.lang.ref.Reference;
53 import java.lang.ref.ReferenceQueue;
54 import java.lang.ref.WeakReference;
55 import jdk.test.whitebox.WhiteBox;
56
57 public class TestReferenceRefersToShenandoah {
58 private static final WhiteBox WB = WhiteBox.getWhiteBox();
59
60 private static final class TestObject {
61 public final int value;
62
63 public TestObject(int value) {
64 this.value = value;
65 }
66 }
67
68 private static volatile TestObject testObjectNone = null;
69 private static volatile TestObject testObject1 = null;
70 private static volatile TestObject testObject2 = null;
82 private static void setup() {
83 testObjectNone = new TestObject(0);
84 testObject1 = new TestObject(1);
85 testObject2 = new TestObject(2);
86 testObject3 = new TestObject(3);
87 testObject4 = new TestObject(4);
88
89 queue = new ReferenceQueue<TestObject>();
90
91 testPhantom1 = new PhantomReference<TestObject>(testObject1, queue);
92
93 testWeak2 = new WeakReference<TestObject>(testObject2, queue);
94 testWeak3 = new WeakReference<TestObject>(testObject3, queue);
95 testWeak4 = new WeakReference<TestObject>(testObject4, queue);
96 }
97
98 private static void gcUntilOld(Object o) throws Exception {
99 if (!WB.isObjectInOldGen(o)) {
100 WB.fullGC();
101 if (!WB.isObjectInOldGen(o)) {
102 fail("object not promoted by full gc");
103 }
104 }
105 }
106
107 private static void gcUntilOld() throws Exception {
108 gcUntilOld(testObjectNone);
109 gcUntilOld(testObject1);
110 gcUntilOld(testObject2);
111 gcUntilOld(testObject3);
112 gcUntilOld(testObject4);
113
114 gcUntilOld(testPhantom1);
115
116 gcUntilOld(testWeak2);
117 gcUntilOld(testWeak3);
118 gcUntilOld(testWeak4);
119 }
120
121 private static void progress(String msg) {
122 System.out.println(msg);
123 }
124
125 private static void fail(String msg) throws Exception {
126 throw new RuntimeException(msg);
127 }
128
129 private static void expectCleared(Reference<TestObject> ref,
130 String which) throws Exception {
131 expectNotValue(ref, testObjectNone, which);
132 if (!ref.refersTo(null)) {
133 fail("expected " + which + " to be cleared");
134 }
135 }
136
137 private static void expectNotCleared(Reference<TestObject> ref,
138 String which) throws Exception {
139 expectNotValue(ref, testObjectNone, which);
140 if (ref.refersTo(null)) {
141 fail("expected " + which + " to not be cleared");
142 }
143 }
144
145 private static void expectValue(Reference<TestObject> ref,
146 TestObject value,
147 String which) throws Exception {
148 expectNotValue(ref, testObjectNone, which);
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1 /*
2 * Copyright (c) 2020, 2023, 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 */
31 * @run main/othervm
32 * -Xbootclasspath/a:.
33 * -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI
34 * -XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC -XX:ShenandoahGCMode=satb
35 * gc.shenandoah.TestReferenceRefersToShenandoah
36 */
37
38 /* @test id=satb-100
39 * @requires vm.gc.Shenandoah
40 * @library /test/lib
41 * @build jdk.test.whitebox.WhiteBox
42 * @modules java.base
43 * @run main jdk.test.lib.helpers.ClassFileInstaller jdk.test.whitebox.WhiteBox
44 * @run main/othervm
45 * -Xbootclasspath/a:.
46 * -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI
47 * -XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC -XX:ShenandoahGCMode=satb -XX:ShenandoahGarbageThreshold=100 -Xmx100m
48 * gc.shenandoah.TestReferenceRefersToShenandoah
49 */
50
51 /* @test id=generational
52 * @requires vm.gc.Shenandoah
53 * @library /test/lib
54 * @build jdk.test.whitebox.WhiteBox
55 * @run driver jdk.test.lib.helpers.ClassFileInstaller jdk.test.whitebox.WhiteBox
56 * @run main/othervm
57 * -Xbootclasspath/a:.
58 * -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI
59 * -XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC -XX:ShenandoahGCMode=generational
60 * gc.shenandoah.TestReferenceRefersToShenandoah
61 */
62
63 /* @test id=generational-100
64 * @requires vm.gc.Shenandoah
65 * @library /test/lib
66 * @build jdk.test.whitebox.WhiteBox
67 * @modules java.base
68 * @run main jdk.test.lib.helpers.ClassFileInstaller jdk.test.whitebox.WhiteBox
69 * @run main/othervm
70 * -Xbootclasspath/a:.
71 * -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI
72 * -XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC -XX:ShenandoahGCMode=generational -XX:ShenandoahGarbageThreshold=100 -Xmx100m
73 * gc.shenandoah.TestReferenceRefersToShenandoah
74 */
75
76 import java.lang.ref.PhantomReference;
77 import java.lang.ref.Reference;
78 import java.lang.ref.ReferenceQueue;
79 import java.lang.ref.WeakReference;
80 import jdk.test.whitebox.WhiteBox;
81
82 public class TestReferenceRefersToShenandoah {
83 private static final WhiteBox WB = WhiteBox.getWhiteBox();
84
85 private static final class TestObject {
86 public final int value;
87
88 public TestObject(int value) {
89 this.value = value;
90 }
91 }
92
93 private static volatile TestObject testObjectNone = null;
94 private static volatile TestObject testObject1 = null;
95 private static volatile TestObject testObject2 = null;
107 private static void setup() {
108 testObjectNone = new TestObject(0);
109 testObject1 = new TestObject(1);
110 testObject2 = new TestObject(2);
111 testObject3 = new TestObject(3);
112 testObject4 = new TestObject(4);
113
114 queue = new ReferenceQueue<TestObject>();
115
116 testPhantom1 = new PhantomReference<TestObject>(testObject1, queue);
117
118 testWeak2 = new WeakReference<TestObject>(testObject2, queue);
119 testWeak3 = new WeakReference<TestObject>(testObject3, queue);
120 testWeak4 = new WeakReference<TestObject>(testObject4, queue);
121 }
122
123 private static void gcUntilOld(Object o) throws Exception {
124 if (!WB.isObjectInOldGen(o)) {
125 WB.fullGC();
126 if (!WB.isObjectInOldGen(o)) {
127 // This is just a warning, because failing would
128 // be overspecifying for generational shenandoah,
129 // which need not necessarily promote objects upon
130 // a full GC.
131 warn("object not promoted by full gc");
132 }
133 }
134 }
135
136 private static void gcUntilOld() throws Exception {
137 gcUntilOld(testObjectNone);
138 gcUntilOld(testObject1);
139 gcUntilOld(testObject2);
140 gcUntilOld(testObject3);
141 gcUntilOld(testObject4);
142
143 gcUntilOld(testPhantom1);
144
145 gcUntilOld(testWeak2);
146 gcUntilOld(testWeak3);
147 gcUntilOld(testWeak4);
148 }
149
150 private static void progress(String msg) {
151 System.out.println(msg);
152 }
153
154 private static void fail(String msg) throws Exception {
155 throw new RuntimeException(msg);
156 }
157
158 private static void warn(String msg) {
159 System.out.println("Warning: " + msg);
160 }
161
162 private static void expectCleared(Reference<TestObject> ref,
163 String which) throws Exception {
164 expectNotValue(ref, testObjectNone, which);
165 if (!ref.refersTo(null)) {
166 fail("expected " + which + " to be cleared");
167 }
168 }
169
170 private static void expectNotCleared(Reference<TestObject> ref,
171 String which) throws Exception {
172 expectNotValue(ref, testObjectNone, which);
173 if (ref.refersTo(null)) {
174 fail("expected " + which + " to not be cleared");
175 }
176 }
177
178 private static void expectValue(Reference<TestObject> ref,
179 TestObject value,
180 String which) throws Exception {
181 expectNotValue(ref, testObjectNone, which);
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