31 * java.management
32 * jdk.internal.jvmstat/sun.jvmstat.monitor
33 * @run testng ClassLoaderHierarchyTest
34 */
35
36 import org.testng.Assert;
37 import org.testng.annotations.Test;
38
39 import jdk.test.lib.process.OutputAnalyzer;
40 import jdk.test.lib.dcmd.CommandExecutor;
41 import jdk.test.lib.dcmd.JMXExecutor;
42
43 import java.io.File;
44 import java.io.FileInputStream;
45 import java.io.IOException;
46 import java.nio.ByteBuffer;
47 import java.nio.channels.FileChannel;
48
49 public class ClassLoaderHierarchyTest {
50
51 // jcmd my-vm VM.classloaders
52 // +-- <bootstrap>
53 // |
54 // +-- platform (instance of jdk.internal.loader.ClassLoaders$PlatformClassLoader)
55 // | |
56 // | +-- app (instance of jdk.internal.loader.ClassLoaders$AppClassLoader)
57 // |
58 // +-- <unnamed> (instance of jdk.internal.reflect.DelegatingClassLoader)
59 // |
60 // +-- Kevin (instance of ClassLoaderHierarchyTest$TestClassLoader)
61 // |
62 // +-- <unnamed> (instance of ClassLoaderHierarchyTest$TestClassLoader)
63 // |
64 // +-- Bill (instance of ClassLoaderHierarchyTest$TestClassLoader)
65 //
66
67 public void run(CommandExecutor executor) throws ClassNotFoundException {
68
69 ClassLoader unnamed_cl = new TestClassLoader(null, null);
70 Class<?> c1 = Class.forName("TestClass2", true, unnamed_cl);
71 if (c1.getClassLoader() != unnamed_cl) {
72 Assert.fail("TestClass defined by wrong classloader: " + c1.getClassLoader());
73 }
74
75 ClassLoader named_cl = new TestClassLoader("Kevin", null);
76 Class<?> c2 = Class.forName("TestClass2", true, named_cl);
77 if (c2.getClassLoader() != named_cl) {
78 Assert.fail("TestClass defined by wrong classloader: " + c2.getClassLoader());
79 }
80
81 ClassLoader named_child_cl = new TestClassLoader("Bill", unnamed_cl);
82 Class<?> c3 = Class.forName("TestClass2", true, named_child_cl);
83 if (c3.getClassLoader() != named_child_cl) {
84 Assert.fail("TestClass defined by wrong classloader: " + c3.getClassLoader());
85 }
86
87 // First test: simple output, no classes displayed
88 OutputAnalyzer output = executor.execute("VM.classloaders");
89 output.shouldContain("<bootstrap>");
90 output.shouldMatch("<unnamed>.*instance of.*TestClassLoader");
91 output.shouldMatch("Kevin.*instance of.*TestClassLoader");
92 output.shouldMatch("Bill.*instance of.*TestClassLoader");
93
94 // Second test: print with classes.
95 output = executor.execute("VM.classloaders show-classes");
96 output.shouldContain("<bootstrap>");
97 output.shouldContain("java.lang.Object");
98 output.shouldMatch("<unnamed>.*instance of.*TestClassLoader");
99 output.shouldMatch("Kevin.*instance of.*TestClassLoader");
100 output.shouldMatch("Bill.*instance of.*TestClassLoader");
101 output.shouldContain("TestClass2");
102 }
103
104 static class TestClassLoader extends ClassLoader {
105
106 public TestClassLoader() {
107 super();
108 }
109
110 public TestClassLoader(String name, ClassLoader parent) {
111 super(name, parent);
112 }
113
114 public static final String CLASS_NAME = "TestClass2";
115
116 static ByteBuffer readClassFile(String name)
117 {
118 File f = new File(System.getProperty("test.classes", "."),
119 name);
120 try (FileInputStream fin = new FileInputStream(f);
|
31 * java.management
32 * jdk.internal.jvmstat/sun.jvmstat.monitor
33 * @run testng ClassLoaderHierarchyTest
34 */
35
36 import org.testng.Assert;
37 import org.testng.annotations.Test;
38
39 import jdk.test.lib.process.OutputAnalyzer;
40 import jdk.test.lib.dcmd.CommandExecutor;
41 import jdk.test.lib.dcmd.JMXExecutor;
42
43 import java.io.File;
44 import java.io.FileInputStream;
45 import java.io.IOException;
46 import java.nio.ByteBuffer;
47 import java.nio.channels.FileChannel;
48
49 public class ClassLoaderHierarchyTest {
50
51 //+-- <bootstrap>
52 // |
53 // +-- "platform", jdk.internal.loader.ClassLoaders$PlatformClassLoader
54 // | |
55 // | +-- "app", jdk.internal.loader.ClassLoaders$AppClassLoader
56 // |
57 // +-- jdk.internal.reflect.DelegatingClassLoader
58 // |
59 // +-- "Kevin", ClassLoaderHierarchyTest$TestClassLoader
60 // |
61 // +-- ClassLoaderHierarchyTest$TestClassLoader
62 // |
63 // +-- "Bill", ClassLoaderHierarchyTest$TestClassLoader
64
65 public void run(CommandExecutor executor) throws ClassNotFoundException {
66
67 ClassLoader unnamed_cl = new TestClassLoader(null, null);
68 Class<?> c1 = Class.forName("TestClass2", true, unnamed_cl);
69 if (c1.getClassLoader() != unnamed_cl) {
70 Assert.fail("TestClass defined by wrong classloader: " + c1.getClassLoader());
71 }
72
73 ClassLoader named_cl = new TestClassLoader("Kevin", null);
74 Class<?> c2 = Class.forName("TestClass2", true, named_cl);
75 if (c2.getClassLoader() != named_cl) {
76 Assert.fail("TestClass defined by wrong classloader: " + c2.getClassLoader());
77 }
78
79 ClassLoader named_child_cl = new TestClassLoader("Bill", unnamed_cl);
80 Class<?> c3 = Class.forName("TestClass2", true, named_child_cl);
81 if (c3.getClassLoader() != named_child_cl) {
82 Assert.fail("TestClass defined by wrong classloader: " + c3.getClassLoader());
83 }
84
85 // First test: simple output, no classes displayed
86 OutputAnalyzer output = executor.execute("VM.classloaders");
87 output.shouldContain("<bootstrap>");
88 output.shouldMatch(".*TestClassLoader");
89 output.shouldMatch("Kevin.*TestClassLoader");
90 output.shouldMatch("Bill.*TestClassLoader");
91
92 // Second test: print with classes.
93 output = executor.execute("VM.classloaders show-classes");
94 output.shouldContain("<bootstrap>");
95 output.shouldContain("java.lang.Object");
96 output.shouldMatch(".*TestClassLoader");
97 output.shouldMatch("Kevin.*TestClassLoader");
98 output.shouldMatch("Bill.*TestClassLoader");
99 output.shouldContain("TestClass2");
100 }
101
102 static class TestClassLoader extends ClassLoader {
103
104 public TestClassLoader() {
105 super();
106 }
107
108 public TestClassLoader(String name, ClassLoader parent) {
109 super(name, parent);
110 }
111
112 public static final String CLASS_NAME = "TestClass2";
113
114 static ByteBuffer readClassFile(String name)
115 {
116 File f = new File(System.getProperty("test.classes", "."),
117 name);
118 try (FileInputStream fin = new FileInputStream(f);
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