1 /*
   2  * Copyright (c) 2019, Red Hat, Inc. All rights reserved.
   3  *
   4  * This code is free software; you can redistribute it and/or modify it
   5  * under the terms of the GNU General Public License version 2 only, as
   6  * published by the Free Software Foundation.
   7  *
   8  * This code is distributed in the hope that it will be useful, but WITHOUT
   9  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  10  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  11  * version 2 for more details (a copy is included in the LICENSE file that
  12  * accompanied this code).
  13  *
  14  * You should have received a copy of the GNU General Public License version
  15  * 2 along with this work; if not, write to the Free Software Foundation,
  16  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  17  *
  18  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  19  * or visit www.oracle.com if you need additional information or have any
  20  * questions.
  21  *
  22  */
  23 
  24 package jdk.jfr.event.gc.detailed;
  25 
  26 import java.nio.file.Paths;
  27 import java.util.List;
  28 
  29 import jdk.jfr.EventType;
  30 import jdk.jfr.FlightRecorder;
  31 import jdk.jfr.Recording;
  32 import jdk.jfr.consumer.RecordedEvent;
  33 import jdk.test.lib.Asserts;
  34 import jdk.test.lib.jfr.EventNames;
  35 import jdk.test.lib.jfr.Events;
  36 import jdk.test.lib.jfr.GCHelper;
  37 
  38 /**
  39  * @test
  40  * @bug 8221507
  41  * @requires vm.hasJFR
  42  * @requires vm.gc == "Shenandoah" | vm.gc == null
  43  * @key jfr
  44  * @library /test/lib /test/jdk
  45  * @run main/othervm  -Xmx32m -XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC -XX:ShenandoahGarbageThreshold=1 jdk.jfr.event.gc.detailed.TestShenandoahHeapRegionInformationEvent
  46  */
  47 
  48 
  49 public class TestShenandoahHeapRegionInformationEvent {
  50     private final static String EVENT_NAME = EventNames.ShenandoahHeapRegionInformation;
  51     public static void main(String[] args) throws Exception {
  52         try (Recording recording = new Recording()) {
  53             // activate the event we are interested in and start recording
  54             for (EventType t : FlightRecorder.getFlightRecorder().getEventTypes()) {
  55                 System.out.println(t.getName());
  56             }
  57             recording.enable(EVENT_NAME);
  58             recording.start();
  59             recording.stop();
  60 
  61             // Verify recording
  62             List<RecordedEvent> events = Events.fromRecording(recording);
  63             Events.hasEvents(events);
  64             for (RecordedEvent event : events) {
  65                 Events.assertField(event, "index").notEqual(-1);
  66                 GCHelper.assertIsValidShenandoahHeapRegionState(Events.assertField(event, "state").getValue());
  67                 Events.assertField(event, "used").atMost(1L*1024*1024);
  68             }
  69         }
  70     }
  71 }