1 /*
2 * Copyright (c) 2015, 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 */
23
24 /*
25 * @test
26 * @summary Test of diagnostic command VM.class_hierarchy
27 * @library /test/lib
28 * @modules java.base/jdk.internal.misc
29 * java.compiler
30 * java.management
31 * jdk.jvmstat/sun.jvmstat.monitor
32 * @run testng ClassHierarchyTest
33 */
34
35 import org.testng.annotations.Test;
36 import org.testng.Assert;
37
38 import jdk.test.lib.process.OutputAnalyzer;
39 import jdk.test.lib.dcmd.CommandExecutor;
40 import jdk.test.lib.dcmd.JMXExecutor;
41
42 import java.io.File;
43 import java.io.FileInputStream;
44 import java.io.IOException;
45 import java.nio.ByteBuffer;
46 import java.nio.channels.FileChannel;
47 import java.util.Iterator;
48 import java.util.regex.Matcher;
49 import java.util.regex.Pattern;
50
51 public class ClassHierarchyTest {
52
53 // $> jcmd DcmdTestClass VM.class_hierarchy DcmdTestClass | grep DcmdTestClass\$\$Lambda
54 // |--DcmdTestClass$$Lambda$1/4081552/0xa529fbb0
55
56 // > VM.class_hierarchy DcmdBaseClass
57 // java.lang.Object/null
58 // |--DcmdBaseClass/0xa4abcd48
59
60 // > VM.class_hierarchy DcmdBaseClass -s
61 // java.lang.Object/null
62 // |--DcmdBaseClass/0xa4abcd48
63 // | |--DcmdTestClass/0xa4abcd48
64
65 // > VM.class_hierarchy DcmdBaseClass -i -s
66 // java.lang.Object/null
67 // |--DcmdBaseClass/0xa4abcd48
68 // | implements Intf2/0xa4abcd48 (declared intf)
69 // | implements Intf1/0xa4abcd48 (inherited intf)
70 // | |--DcmdTestClass/0xa4abcd48
71 // | | implements Intf1/0xa4abcd48 (inherited intf)
72 // | | implements Intf2/0xa4abcd48 (inherited intf)
73
74 static Pattern expected_lambda_line =
75 Pattern.compile("\\|--DcmdTestClass\\$\\$Lambda.*");
76
77 static Pattern expected_lines[] = {
78 Pattern.compile("java.lang.Object/null"),
79 Pattern.compile("\\|--DcmdBaseClass/0x(\\p{XDigit}*)"),
80 Pattern.compile("\\| implements Intf2/0x(\\p{XDigit}*) \\(declared intf\\)"),
81 Pattern.compile("\\| implements Intf1/0x(\\p{XDigit}*) \\(inherited intf\\)"),
82 Pattern.compile("\\| \\|--DcmdTestClass/0x(\\p{XDigit}*)"),
83 Pattern.compile("\\| \\| implements Intf1/0x(\\p{XDigit}*) \\(inherited intf\\)"),
84 Pattern.compile("\\| \\| implements Intf2/0x(\\p{XDigit}*) \\(inherited intf\\)")
85 };
86
87 public void run(CommandExecutor executor) throws ClassNotFoundException {
88 OutputAnalyzer output;
89 Iterator<String> lines;
90 int i;
91
92 // Load our test class whose hierarchy we will print.
93 Class<?> c = Class.forName("DcmdTestClass");
94
95 // Verify the presence of the lamba anonymous class
96 output = executor.execute("VM.class_hierarchy");
97 lines = output.asLines().iterator();
98 Boolean foundMatch = false;
99 while (lines.hasNext()) {
100 String line = lines.next();
101 Matcher m = expected_lambda_line.matcher(line);
102 if (m.matches()) {
103 foundMatch = true;
104 break;
105 }
106 }
107 if (!foundMatch) {
108 Assert.fail("Failed to find lamda class");
109 }
110
111 // Verify the output for the simple hierachry of just DcmdBaseClass.
112 output = executor.execute("VM.class_hierarchy DcmdBaseClass");
113 lines = output.asLines().iterator();
114 i = 0;
115 while (lines.hasNext()) {
116 String line = lines.next();
117 Matcher m = expected_lines[i].matcher(line);
118 i++;
119 if (!m.matches()) {
120 Assert.fail("Failed to match line #" + i + ": " + line);
121 }
122 // Should only be two lines of output in this form.
123 if (i == 2) break;
124 }
125 if (lines.hasNext()) {
126 String line = lines.next();
127 Assert.fail("Unexpected dcmd output: " + line);
128 }
129
130 // Verify the output for the full hierarchy of DcmdBaseClass, but without interfaces.
131 output = executor.execute("VM.class_hierarchy DcmdBaseClass -s");
132 lines = output.asLines().iterator();
133 i = 0;
134 while (lines.hasNext()) {
135 String line = lines.next();
136 Matcher m = expected_lines[i].matcher(line);
137 i++;
138 if (!m.matches()) {
139 Assert.fail("Failed to match line #" + i + ": " + line);
140 }
141 // "implements" lines should not be in this output.
142 if (i == 2 || i == 4) i += 2;
143 }
144 if (lines.hasNext()) {
145 String line = lines.next();
146 Assert.fail("Unexpected dcmd output: " + line);
147 }
148
149 // Verify the output for the full hierarchy of DcmdBaseClass, including interfaces.
150 output = executor.execute("VM.class_hierarchy DcmdBaseClass -i -s");
151 lines = output.asLines().iterator();
152 i = 0;
153 String classLoaderAddr = null;
154 while (lines.hasNext()) {
155 String line = lines.next();
156 Matcher m = expected_lines[i].matcher(line);
157 i++;
158 if (!m.matches()) {
159 Assert.fail("Failed to match line #" + i + ": " + line);
160 }
161 if (i == 2) {
162 // Fetch the ClassLoader address, which should be the same in
163 // subsequent lines.
164 classLoaderAddr = m.group(1);
165 System.out.println(classLoaderAddr);
166 } else if (i > 2) {
167 if (!classLoaderAddr.equals(m.group(1))) {
168 Assert.fail("Classloader address didn't match on line #"
169 + i + ": " + line);
170 }
171 }
172 if (i == expected_lines.length) break;
173 }
174 if (lines.hasNext()) {
175 String line = lines.next();
176 Assert.fail("Unexpected dcmd output: " + line);
177 }
178 }
179
180 @Test
181 public void jmx() throws ClassNotFoundException {
182 run(new JMXExecutor());
183 }
184 }
185
186 interface Intf1 {
187 }
188
189 interface Intf2 extends Intf1 {
190 }
191
192 class DcmdBaseClass implements Intf2 {
193 }
194
195 class DcmdTestClass extends DcmdBaseClass {
196 static {
197 // Force creation of anonymous class (for the lambdaform).
198 Runnable r = () -> System.out.println("Hello");
199 r.run();
200 }
201 }