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  *
  40  *
  41  * @key jfr
  42  * @library /lib /
  43  * @run main/othervm -XX:+UseParallelGC jdk.jfr.event.runtime.TestVMOperation
  44  */
  45 public class TestVMOperation {
  46 
  47     private static final String EVENT_NAME = EventNames.ExecuteVMOperation;
  48     private static final String VM_OPERATION = "ParallelGCSystemGC";
  49 
  50     public static void main(String[] args) throws Throwable {
  51         Recording recording = new Recording();
  52         recording.enable(EVENT_NAME).withThreshold(Duration.ofMillis(0));
  53         recording.start();
  54         System.gc();
  55         recording.stop();
  56 
  57         List<RecordedEvent> events = Events.fromRecording(recording);
  58         Events.hasEvents(events);
  59         for (RecordedEvent event : Events.fromRecording(recording)) {
  60             String operation = Events.assertField(event, "operation").notEmpty().getValue();
  61             if (operation.equals(VM_OPERATION)) {
  62                 Events.assertField(event, "safepoint").equal(true);
  63                 Events.assertField(event, "blocking").equal(true);
  64                 RecordedThread jt = event.getValue("caller");
  65                 if (Thread.currentThread().getName().equals(jt.getJavaName())) {
  66                     return;
  67                 }
  68             }
  69         }
  70         throw new AssertionError("No matching event with VM operation name " + VM_OPERATION + " and current threasd as caller");
  71     }
  72 }