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=aggressive
28 * @summary Tests JVMTI heap dumps
29 * @requires vm.gc.Shenandoah
30 * @requires vm.jvmti
31 * @compile TestHeapDump.java
32 * @run main/othervm/native/timeout=300 -agentlib:TestHeapDump
33 * -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions
34 * -XX:+UseShenandoahGC -Xmx128m
35 * -XX:ShenandoahGCHeuristics=aggressive
36 * TestHeapDump
37 *
38 */
39
40 /**
41 * @test id=no-coops-aggressive
42 * @summary Tests JVMTI heap dumps
43 * @requires vm.gc.Shenandoah
44 * @requires vm.jvmti
45 * @requires vm.bits == "64"
46 * @compile TestHeapDump.java
47 * @run main/othervm/native/timeout=300 -agentlib:TestHeapDump
48 * -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions
49 * -XX:+UseShenandoahGC -Xmx128m
50 * -XX:ShenandoahGCHeuristics=aggressive
51 * -XX:-UseCompressedOops TestHeapDump
52 */
53
54 /**
55 * @test id=aggressive-strdedup
56 * @summary Tests JVMTI heap dumps
57 * @requires vm.gc.Shenandoah
58 * @requires vm.jvmti
59 * @compile TestHeapDump.java
60 * @run main/othervm/native/timeout=300 -agentlib:TestHeapDump
61 * -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions
62 * -XX:+UseShenandoahGC -Xmx128m
63 * -XX:ShenandoahGCHeuristics=aggressive
64 * -XX:+UseStringDeduplication TestHeapDump
65 */
66
67 /**
68 * @test id=generational
69 * @summary Tests JVMTI heap dumps
70 * @requires vm.gc.Shenandoah
71 * @requires vm.jvmti
72 * @compile TestHeapDump.java
73 * @run main/othervm/native/timeout=300 -agentlib:TestHeapDump
74 * -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions
75 * -XX:+UseShenandoahGC -Xmx128m
76 * -XX:ShenandoahGCMode=generational
77 * TestHeapDump
78 *
79 */
80
81 /**
82 * @test id=no-coops-generational
83 * @summary Tests JVMTI heap dumps
84 * @requires vm.gc.Shenandoah
85 * @requires vm.jvmti
86 * @requires vm.bits == "64"
87 * @compile TestHeapDump.java
88 * @run main/othervm/native/timeout=300 -agentlib:TestHeapDump
89 * -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions
90 * -XX:+UseShenandoahGC -Xmx128m
91 * -XX:ShenandoahGCMode=generational
92 * -XX:-UseCompressedOops TestHeapDump
93 */
94
95 /**
96 * @test id=generational-strdedup
97 * @summary Tests JVMTI heap dumps
98 * @requires vm.gc.Shenandoah
99 * @requires vm.jvmti
100 * @compile TestHeapDump.java
101 * @run main/othervm/native/timeout=300 -agentlib:TestHeapDump
102 * -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions
103 * -XX:+UseShenandoahGC -Xmx128m
104 * -XX:ShenandoahGCMode=generational
105 * -XX:+UseStringDeduplication TestHeapDump
106 */
107 import java.lang.ref.Reference;
108
109 public class TestHeapDump {
110
111 private static final int NUM_ITER = 10000;
112
113 private static final int ARRAY_SIZE = 1000;
114
115 private static final int EXPECTED_OBJECTS =
116 ARRAY_SIZE + // array reachable from instance field
117 1 + // static field root
118 1; // local field root
119
120 static {
121 try {
122 System.loadLibrary("TestHeapDump");
123 } catch (UnsatisfiedLinkError ule) {
124 System.err.println("Could not load TestHeapDump library");
125 System.err.println("java.library.path: "
126 + System.getProperty("java.library.path"));
127 throw ule;
128 }
129 }
130
131 native static int heapdump(Class<?> filterClass);
132
133 public static void main(String args[]) {
134 new TestHeapDump().run();
135 }
136
137 // This root needs to be discovered
138 static Object root = new TestObject();
139
140 // This field needs to be discovered
141 TestObject[] array;
142
143 public void run() {
144 array = new TestObject[ARRAY_SIZE];
145 for (int i = 0; i < ARRAY_SIZE; i++) {
146 array[i] = new TestObject();
147 }
148 TestObject localRoot = new TestObject();
149 for (int i = 0; i < NUM_ITER; i++) {
150 int numObjs = heapdump(TestObject.class);
151 if (numObjs != EXPECTED_OBJECTS) {
152 throw new RuntimeException("Expected " + EXPECTED_OBJECTS + " objects, but got " + numObjs);
153 }
154 }
155 Reference.reachabilityFence(array);
156 Reference.reachabilityFence(localRoot);
157 }
158
159 // We look for the instances of this class during the heap scan
160 public static class TestObject {}
161 }