1 /*

     2  * Copyright (c) 2013, 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.jmx;

    27 

    28 import java.util.List;

    29 

    30 import jdk.jfr.RecordingState;

    31 import jdk.management.jfr.FlightRecorderMXBean;

    32 import jdk.management.jfr.RecordingInfo;

    33 

    34 /*

    35  * @test

    36  * @key jfr

    37  * @library /test/lib /test/jdk

    38  * @run main/othervm jdk.jfr.jmx.TestMultipleRecordings

    39  */

    40 public class TestMultipleRecordings {

    41     public static void main(String[] args) throws Throwable {

    42         FlightRecorderMXBean bean = JmxHelper.getFlighteRecorderMXBean();

    43         System.out.println("bean.class=" + bean.getClass().getName());

    44 

    45         // Start recA

    46         long recIdA = createRecording(bean);

    47         startRecording(recIdA, bean);

    48 

    49         // Start recB

    50         long recIdB = createRecording(bean);

    51         startRecording(recIdB, bean);

    52 

    53         // Stop and destroy recA

    54         stopRecording(recIdA, bean);

    55         destroyRecording(recIdA, bean);

    56 

    57         // Start, stop and destroy recC

    58         long recIdC = createRecording(bean);

    59         startRecording(recIdC, bean);

    60         stopRecording(recIdC, bean);

    61         destroyRecording(recIdC, bean);

    62 

    63         // Stop and destroy recB

    64         stopRecording(recIdB, bean);

    65         destroyRecording(recIdB, bean);

    66     }

    67 

    68     private static long createRecording(FlightRecorderMXBean bean) throws Exception {

    69         List<RecordingInfo> preCreateRecordings = bean.getRecordings();

    70         long recId = bean.newRecording();

    71         JmxHelper.verifyNotExists(recId, preCreateRecordings);

    72         JmxHelper.verifyState(recId, RecordingState.NEW, bean);

    73         return recId;

    74     }

    75 

    76     private static void startRecording(long recId, FlightRecorderMXBean bean) throws Exception {

    77         JmxHelper.verifyState(recId, RecordingState.NEW, bean);

    78         bean.startRecording(recId);

    79         JmxHelper.verifyState(recId, RecordingState.RUNNING, bean);

    80     }

    81 

    82     private static void stopRecording(long recId, FlightRecorderMXBean bean) throws Exception {

    83         JmxHelper.verifyState(recId, RecordingState.RUNNING, bean);

    84         bean.stopRecording(recId);

    85         JmxHelper.verifyState(recId, RecordingState.STOPPED, bean);

    86     }

    87 

    88     private static void destroyRecording(long recId, FlightRecorderMXBean bean) throws Exception {

    89         JmxHelper.verifyState(recId, RecordingState.STOPPED, bean);

    90         bean.closeRecording(recId);

    91         JmxHelper.verifyNotExists(recId, bean.getRecordings());

    92     }

    93 

    94 }