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.event.runtime;

    27 

    28 import java.time.Duration;

    29 import java.util.List;

    30 

    31 import jdk.jfr.Recording;

    32 import jdk.jfr.consumer.RecordedEvent;

    33 import jdk.jfr.consumer.RecordedThread;

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

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

    36 

    37 /*

    38  * @test

    39  * @requires vm.gc == "Parallel" | vm.gc == null

    40  * @key jfr

    41  * @library /test/lib

    42  * @run main/othervm -XX:+UseParallelGC jdk.jfr.event.runtime.TestVMOperation

    43  */

    44 public class TestVMOperation {

    45 

    46     private static final String EVENT_NAME = EventNames.ExecuteVMOperation;

    47     private static final String VM_OPERATION = "ParallelGCSystemGC";

    48 

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

    50         Recording recording = new Recording();

    51         recording.enable(EVENT_NAME).withThreshold(Duration.ofMillis(0));

    52         recording.start();

    53         System.gc();

    54         recording.stop();

    55 

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

    57         Events.hasEvents(events);

    58         for (RecordedEvent event : Events.fromRecording(recording)) {

    59             String operation = Events.assertField(event, "operation").notEmpty().getValue();

    60             if (operation.equals(VM_OPERATION)) {

    61                 Events.assertField(event, "safepoint").equal(true);

    62                 Events.assertField(event, "blocking").equal(true);

    63                 RecordedThread jt = event.getValue("caller");

    64                 if (Thread.currentThread().getName().equals(jt.getJavaName())) {

    65                     return;

    66                 }

    67             }

    68         }

    69         throw new AssertionError("No matching event with VM operation name " + VM_OPERATION + " and current threasd as caller");

    70     }

    71 }