1 /*

     2  * Copyright (c) 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.internal.consumer;

    27 

    28 import java.io.IOException;

    29 import java.util.Comparator;

    30 import java.util.List;

    31 

    32 import jdk.jfr.consumer.RecordedClass;

    33 import jdk.jfr.consumer.RecordedClassLoader;

    34 import jdk.jfr.consumer.RecordedEvent;

    35 import jdk.jfr.consumer.RecordedFrame;

    36 import jdk.jfr.consumer.RecordedMethod;

    37 import jdk.jfr.consumer.RecordedObject;

    38 import jdk.jfr.consumer.RecordedStackTrace;

    39 import jdk.jfr.consumer.RecordedThread;

    40 import jdk.jfr.consumer.RecordedThreadGroup;

    41 import jdk.jfr.consumer.RecordingFile;

    42 import jdk.jfr.internal.Type;

    43 /*

    44  * Purpose of this class is to give package private access to

    45  * the jdk.jfr.consumer package

    46  */

    47 public abstract class JdkJfrConsumer {

    48 

    49     private static JdkJfrConsumer instance;

    50 

    51     // Initialization will trigger setAccess being called

    52     private static void forceInitializetion() {

    53         try {

    54             Class<?> c = RecordedObject.class;

    55             Class.forName(c.getName(), true, c.getClassLoader());

    56         } catch (ClassNotFoundException e) {

    57             throw new InternalError("Should not happen");

    58         }

    59     }

    60 

    61     public static void setAccess(JdkJfrConsumer access) {

    62         instance = access;

    63     }

    64 

    65     public static JdkJfrConsumer instance() {

    66         if (instance == null) {

    67             forceInitializetion();

    68         }

    69         return instance;

    70     }

    71 

    72     public abstract List<Type> readTypes(RecordingFile file) throws IOException;

    73 

    74     public abstract boolean isLastEventInChunk(RecordingFile file);

    75 

    76     public abstract Object getOffsetDataTime(RecordedObject event, String name);

    77 

    78     public abstract RecordedClass newRecordedClass(ObjectContext objectContext, long id, Object[] values);

    79 

    80     public abstract RecordedClassLoader newRecordedClassLoader(ObjectContext objectContext, long id, Object[] values);

    81 

    82     public abstract RecordedStackTrace newRecordedStackTrace(ObjectContext objectContext, Object[] values);

    83 

    84     public abstract RecordedThreadGroup newRecordedThreadGroup(ObjectContext objectContext, Object[] values);

    85 

    86     public abstract RecordedFrame newRecordedFrame(ObjectContext objectContext, Object[] values);

    87 

    88     public abstract RecordedThread newRecordedThread(ObjectContext objectContext, long id, Object[] values);

    89 

    90     public abstract RecordedMethod newRecordedMethod(ObjectContext objectContext, Object[] values);

    91 

    92     public abstract RecordedEvent newRecordedEvent(ObjectContext objectContext, Object[] objects, long l, long m);

    93 

    94     public abstract Comparator<? super RecordedEvent> eventComparator();

    95 

    96     public abstract void setStartTicks(RecordedEvent event, long startTicks);

    97 

    98     public abstract void setEndTicks(RecordedEvent event, long endTicks);

    99 

   100     public abstract Object[] eventValues(RecordedEvent event);

   101 }