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 package jdk.jfr.event.gc.detailed;

    26 

    27 import java.nio.file.Paths;

    28 import java.util.List;

    29 

    30 import jdk.jfr.EventType;

    31 import jdk.jfr.FlightRecorder;

    32 import jdk.jfr.Recording;

    33 import jdk.jfr.consumer.RecordedEvent;

    34 import jdk.test.lib.Asserts;

    35 import jdk.test.lib.jfr.EventNames;

    36 import jdk.test.lib.jfr.Events;

    37 import jdk.test.lib.jfr.GCHelper;

    38 

    39 public class TestG1HeapRegionInformationEvent {

    40     private final static String EVENT_NAME = EventNames.G1HeapRegionInformation;

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

    42         Recording recording = null;

    43         try {

    44             recording = new Recording();

    45             // activate the event we are interested in and start recording

    46             for (EventType t : FlightRecorder.getFlightRecorder().getEventTypes()) {

    47                 System.out.println(t.getName());

    48             }

    49             recording.enable(EVENT_NAME);

    50             recording.start();

    51             recording.stop();

    52 

    53             // Verify recording

    54             List<RecordedEvent> events = Events.fromRecording(recording);

    55             Events.hasEvents(events);

    56 

    57             for (RecordedEvent event : events) {

    58                 Events.assertField(event, "index").notEqual(-1);

    59                 Asserts.assertTrue(GCHelper.isValidG1HeapRegionType(Events.assertField(event, "type").getValue()));

    60                 Events.assertField(event, "used").atMost(1L*1024*1024);

    61             }

    62 

    63         } catch (Throwable t) {

    64             if (recording != null) {

    65                 recording.dump(Paths.get("TestG1HeapRegionInformationEvent.jfr"));

    66             }

    67             throw t;

    68         } finally {

    69             if (recording != null) {

    70                 recording.close();

    71             }

    72         }

    73     }

    74 }