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 /**
  40  * @test
  41  * @bug 8221507
  42  * @requires vm.hasJFR
  43  * @requires vm.gc == "Shenandoah" | vm.gc == null
  44  * @key jfr
  45  * @library /test/lib /test/jdk
  46  * @run main/othervm  -Xmx32m -XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC -XX:ShenandoahGarbageThreshold=1 jdk.jfr.event.gc.detailed.TestShenandoahHeapRegionStateChangeEvent
  47  */
  48 
  49 
  50 public class TestShenandoahHeapRegionInformationEvent {
  51     private final static String EVENT_NAME = EventNames.ShenandoahHeapRegionInformation;
  52     public static void main(String[] args) throws Exception {
  53         Recording recording = null;
  54         try {
  55             recording = new Recording();
  56             // activate the event we are interested in and start recording
  57             for (EventType t : FlightRecorder.getFlightRecorder().getEventTypes()) {
  58                 System.out.println(t.getName());
  59             }
  60             recording.enable(EVENT_NAME);
  61             recording.start();
  62             recording.stop();
  63 
  64             // Verify recording
  65             List<RecordedEvent> events = Events.fromRecording(recording);
  66             Events.hasEvents(events);
  67 
  68             for (RecordedEvent event : events) {
  69                 Events.assertField(event, "index").notEqual(-1);
  70                 Asserts.assertTrue(GCHelper.isValidShenandoahHeapRegionState(Events.assertField(event, "type").getValue()));
  71                 Events.assertField(event, "used").atMost(1L*1024*1024);
  72             }
  73 
  74         } catch (Throwable t) {
  75             if (recording != null) {
  76                 recording.dump(Paths.get("TestShenandoahHeapRegionInformationEvent.jfr"));
  77             }
  78             throw t;
  79         } finally {
  80             if (recording != null) {
  81                 recording.close();
  82             }
  83         }
  84     }
  85 }