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.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 }