1 /*
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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
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9  * This code is distributed in the hope that it will be useful, but WITHOUT
10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
12  * version 2 for more details (a copy is included in the LICENSE file that
13  * accompanied this code).
14  *
15  * You should have received a copy of the GNU General Public License version
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17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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23 package jdk.jfr.event.gc.detailed;
24 
25 import java.nio.file.Paths;
26 import java.util.List;
27 
28 import jdk.jfr.EventType;
29 import jdk.jfr.FlightRecorder;
30 import jdk.jfr.Recording;
31 import jdk.jfr.consumer.RecordedEvent;
32 import jdk.test.lib.Asserts;
33 import jdk.test.lib.jfr.EventNames;
34 import jdk.test.lib.jfr.Events;
35 import jdk.test.lib.jfr.GCHelper;
36 
37 public class TestG1HeapRegionInformationEvent {
38     private final static String EVENT_NAME = EventNames.G1HeapRegionInformation;
main(String[] args)39     public static void main(String[] args) throws Exception {
40         Recording recording = null;
41         try {
42             recording = new Recording();
43             // activate the event we are interested in and start recording
44             for (EventType t : FlightRecorder.getFlightRecorder().getEventTypes()) {
45                 System.out.println(t.getName());
46             }
47             recording.enable(EVENT_NAME);
48             recording.start();
49             recording.stop();
50 
51             // Verify recording
52             List<RecordedEvent> events = Events.fromRecording(recording);
53             Events.hasEvents(events);
54 
55             for (RecordedEvent event : events) {
56                 Events.assertField(event, "index").notEqual(-1);
57                 Asserts.assertTrue(GCHelper.isValidG1HeapRegionType(Events.assertField(event, "type").getValue()));
58                 Events.assertField(event, "used").atMost(1L*1024*1024);
59             }
60 
61         } catch (Throwable t) {
62             if (recording != null) {
63                 recording.dump(Paths.get("TestG1HeapRegionInformationEvent.jfr"));
64             }
65             throw t;
66         } finally {
67             if (recording != null) {
68                 recording.close();
69             }
70         }
71     }
72 }
73