1 /* 2 * Copyright (c) 2016, 2018, 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. Oracle designates this 8 * particular file as subject to the "Classpath" exception as provided 9 * by Oracle in the LICENSE file that accompanied this code. 10 * 11 * This code is distributed in the hope that it will be useful, but WITHOUT 12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 14 * version 2 for more details (a copy is included in the LICENSE file that 15 * accompanied this code). 16 * 17 * You should have received a copy of the GNU General Public License version 18 * 2 along with this work; if not, write to the Free Software Foundation, 19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 20 * 21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 22 * or visit www.oracle.com if you need additional information or have any 23 * questions. 24 */ 25 26 package jdk.jfr.consumer; 27 28 import java.lang.reflect.Modifier; 29 import java.util.List; 30 31 import jdk.jfr.ValueDescriptor; 32 import jdk.jfr.internal.Type; 33 34 /** 35 * A recorded method. 36 * 37 * @since 9 38 */ 39 public final class RecordedMethod extends RecordedObject { 40 41 static ObjectFactory<RecordedMethod> createFactory(Type type, TimeConverter timeConverter) { 42 return new ObjectFactory<RecordedMethod>(type) { 43 @Override 44 RecordedMethod createTyped(List<ValueDescriptor> desc, long id, Object[] object) { 45 return new RecordedMethod(desc, object, timeConverter); 46 } 47 }; 48 } 49 50 private RecordedMethod(List<ValueDescriptor> descriptors, Object[] objects, TimeConverter timeConverter) { 51 super(descriptors, objects, timeConverter); 52 } 53 54 /** 55 * Returns the class this method belongs to, if it belong to a Java frame. 56 * <p> 57 * To ensure this is a Java frame, use the {@link RecordedFrame#isJavaFrame()} 58 * method. 59 * 60 * @return the class, may be {@code null} if not a Java frame 61 * 62 * @see RecordedFrame#isJavaFrame() 63 */ 64 public RecordedClass getType() { 65 return getTyped("type", RecordedClass.class, null); 66 } 67 68 /** 69 * Returns the name of this method, for example {@code "toString"}. 70 * <p> 71 * If this method doesn't belong to a Java frame the result is undefined. 72 * 73 * @return method name, or {@code null} if doesn't exist 74 * 75 * @see RecordedFrame#isJavaFrame() 76 */ 77 public String getName() { 78 return getTyped("name", String.class, null); 79 } 80 81 /** 82 * Returns the method descriptor for this method (for example, 83 * {@code "(Ljava/lang/String;)V"}). 84 * <p> 85 * See Java Virtual Machine Specification, 4.3 86 * <p> 87 * If this method doesn't belong to a Java frame then the the result is undefined. 88 * 89 * @return method descriptor. 90 * 91 * @see RecordedFrame#isJavaFrame() 92 */ 93 public String getDescriptor() { 94 return getTyped("descriptor", String.class, null); 95 } 96 97 /** 98 * Returns the modifiers for this method. 99 * <p> 100 * If this method doesn't belong to a Java frame, then the result is undefined. 101 * 102 * @return the modifiers 103 * 104 * @see Modifier 105 * @see RecordedFrame#isJavaFrame 106 */ 107 public int getModifiers() { 108 return getTyped("modifiers", Integer.class, Integer.valueOf(0)); 109 } 110 111 /** 112 * Returns whether this method is hidden (for example, wrapper code in a lambda 113 * expressions). 114 * 115 * @return {@code true} if method is hidden, {@code false} otherwise 116 */ 117 public boolean isHidden() { 118 return getTyped("hidden", Boolean.class, Boolean.FALSE); 119 } 120 }