1 /* 2 * Copyright (c) 2014, 2018, Oracle and/or its affiliates. All rights reserved. 3 * Copyright (c) 2018, SAP SE. 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 import java.lang.reflect.Constructor; 26 import java.lang.reflect.Method; 27 28 import org.testng.Assert; 29 import org.testng.annotations.Test; 30 31 import jdk.test.lib.dcmd.CommandExecutor; 32 import jdk.test.lib.dcmd.JMXExecutor; 33 import jdk.test.lib.process.OutputAnalyzer; 34 35 /* 36 * @test 37 * @summary Test that various diagnostic commands which can show core reflection 38 * invocation targets do so correctly (See: JDK-8203343). 39 * @library /test/lib 40 * @run testng/othervm -Dsun.reflect.noInflation=true ShowReflectionTargetTest 41 * @author stuefe 42 */ 43 44 public class ShowReflectionTargetTest { 45 46 @SuppressWarnings("unused") 47 private static class Dummy { 48 int _i; 49 public Dummy(int i) { _i = i; } 50 public int get_i() { return _i; } 51 } 52 53 public void run(CommandExecutor executor) throws Exception { 54 // Do some reflection; since we set -Dsun.reflect.noInflation=true, this should 55 // immediately generate Generated{Method|Constructor}Accessor objects. 56 Class<?> c = Class.forName("ShowReflectionTargetTest$Dummy"); 57 Constructor<?> ctor = c.getConstructor(int.class); 58 Method m = c.getMethod("get_i"); 59 60 Object o = ctor.newInstance(17); 61 int j = ((Integer)m.invoke(o)).intValue(); 62 Assert.assertEquals(j, 17); 63 64 // Now invoke VM.class_hierarchy and check its output. 65 // Should show reflection targets, e.g.: 66 // .... 67 // |--jdk.internal.reflect.MagicAccessorImpl/null 68 // | |--jdk.internal.reflect.FieldAccessorImpl/null 69 // | | |--jdk.internal.reflect.UnsafeFieldAccessorImpl/null 70 // | | | |--jdk.internal.reflect.UnsafeStaticFieldAccessorImpl/null 71 // | | | | |--jdk.internal.reflect.UnsafeQualifiedStaticFieldAccessorImpl/null 72 // | | | | | |--jdk.internal.reflect.UnsafeQualifiedStaticObjectFieldAccessorImpl/null 73 // | |--jdk.internal.reflect.ConstructorAccessorImpl/null 74 // | | |--jdk.internal.reflect.DelegatingConstructorAccessorImpl/null 75 // | | |--jdk.internal.reflect.NativeConstructorAccessorImpl/null 76 // > | | |--jdk.internal.reflect.GeneratedConstructorAccessor1/0x00007f75f04889b0 (invokes: java/lang/management/ManagementPermission::<init> (Ljava/lang/String;)V) 77 // > | | |--jdk.internal.reflect.GeneratedConstructorAccessor2/0x00007f75f0494990 (invokes: ShowReflectionTargetTest$Dummy::<init> (I)V) 78 // | | |--jdk.internal.reflect.BootstrapConstructorAccessorImpl/null 79 // | |--jdk.internal.reflect.MethodAccessorImpl/null 80 // > | | |--jdk.internal.reflect.GeneratedMethodAccessor1/0x00007f75f0494450 (invokes: ShowReflectionTargetTest$Dummy::get_i ()I) 81 // | | |--jdk.internal.reflect.DelegatingMethodAccessorImpl/null 82 // ... 83 84 OutputAnalyzer output = executor.execute("VM.class_hierarchy"); 85 86 output.shouldMatch(".*jdk.internal.reflect.GeneratedConstructorAccessor.*invokes.*ShowReflectionTargetTest\\$Dummy::<init>.*"); 87 output.shouldMatch(".*jdk.internal.reflect.GeneratedMethodAccessor.*invokes.*ShowReflectionTargetTest\\$Dummy::get_i.*"); 88 89 } 90 91 @Test 92 public void jmx() throws Exception { 93 run(new JMXExecutor()); 94 } 95 96 } 97 98 99