1 /* 2 * Copyright (c) 2016, 2019, 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, or {@code null} if this method 56 * doesn't belong to a Java frame. 57 * 58 * @return the class, or {@code null} if this method doesn't belong 59 * to a Java frame. 60 * 61 * @see RecordedFrame#isJavaFrame() 62 */ 63 public RecordedClass getType() { 64 return getTyped("type", RecordedClass.class, null); 65 } 66 67 /** 68 * Returns the name of this method, for example {@code "toString"}. 69 * <p> 70 * If this method doesn't belong to a Java frame the result is undefined. 71 * 72 * @return method name, or {@code null} not available 73 * 74 * @see RecordedFrame#isJavaFrame() 75 */ 76 public String getName() { 77 return getTyped("name", String.class, null); 78 } 79 80 /** 81 * Returns the method descriptor for this method (for example, 82 * {@code "(Ljava/lang/String;)V"}). 83 * <p> 84 * See Java Virtual Machine Specification, 4.3 85 * <p> 86 * If this method doesn't belong to a Java frame then the the result is undefined. 87 * 88 * @return method descriptor. 89 * 90 * @see RecordedFrame#isJavaFrame() 91 */ 92 public String getDescriptor() { 93 return getTyped("descriptor", String.class, null); 94 } 95 96 /** 97 * Returns the modifiers for this method. 98 * <p> 99 * If this method doesn't belong to a Java frame, then the result is undefined. 100 * 101 * @return the modifiers 102 * 103 * @see Modifier 104 * @see RecordedFrame#isJavaFrame 105 */ 106 public int getModifiers() { 107 return getTyped("modifiers", Integer.class, Integer.valueOf(0)); 108 } 109 110 /** 111 * Returns whether this method is hidden (for example, wrapper code in a lambda 112 * expressions). 113 * 114 * @return {@code true} if method is hidden, {@code false} otherwise 115 */ 116 public boolean isHidden() { 117 return getTyped("hidden", Boolean.class, Boolean.FALSE); 118 } 119 }