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.util.List; 29 30 import jdk.jfr.ValueDescriptor; 31 import jdk.jfr.internal.Type; 32 33 /** 34 * A recorded Java class loader. 35 * 36 * @since 9 37 */ 38 public final class RecordedClassLoader extends RecordedObject { 39 40 static ObjectFactory<RecordedClassLoader> createFactory(Type type, TimeConverter timeConverter) { 41 return new ObjectFactory<RecordedClassLoader>(type) { 42 @Override 43 RecordedClassLoader createTyped(List<ValueDescriptor> desc, long id, Object[] object) { 44 return new RecordedClassLoader(desc, id, object, timeConverter); 45 } 46 }; 47 } 48 49 private final long uniqueId; 50 51 // package private 52 private RecordedClassLoader(List<ValueDescriptor> descriptors, long id, Object[] values, TimeConverter timeConverter) { 53 super(descriptors, values, timeConverter); 54 this.uniqueId = id; 55 } 56 57 /** 58 * Returns the class of the class loader. 59 * <P> 60 * If the bootstrap class loader is represented as {@code null} in the Java 61 * Virtual Machine (JVM), then {@code null} is also the return value of this 62 * method. 63 * 64 * @return class of the class loader, can be {@code null} 65 */ 66 public RecordedClass getType() { 67 return getTyped("type", RecordedClass.class, null); 68 } 69 70 /** 71 * Returns the name of the class loader (for example, "boot", "platform", and 72 * "app"). 73 * 74 * @return the class loader name, can be {@code null} 75 */ 76 public String getName() { 77 return getTyped("name", String.class, null); 78 } 79 80 /** 81 * Returns a unique ID for the class loader. 82 * <p> 83 * The ID might not be the same between Java Virtual Machine (JVM) instances. 84 * 85 * @return a unique ID 86 */ 87 public long getId() { 88 return uniqueId; 89 } 90 }