1 /* 2 * Copyright (c) 2016, 2019, 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.testlibrary.Asserts; 35 import jdk.testlibrary.jfr.EventNames; 36 import jdk.testlibrary.jfr.Events; 37 import jdk.testlibrary.jfr.GCHelper; 38 39 public class TestG1HeapRegionInformationEvent { 40 private final static String EVENT_NAME = EventNames.G1HeapRegionInformation; 41 public static void main(String[] args) throws Exception { 42 Recording recording = null; 43 try { 44 recording = new Recording(); 45 // activate the event we are interested in and start recording 46 for (EventType t : FlightRecorder.getFlightRecorder().getEventTypes()) { 47 System.out.println(t.getName()); 48 } 49 recording.enable(EVENT_NAME); 50 recording.start(); 51 recording.stop(); 52 53 // Verify recording 54 List<RecordedEvent> events = Events.fromRecording(recording); 55 Events.hasEvents(events); 56 57 for (RecordedEvent event : events) { 58 Events.assertField(event, "index").notEqual(-1); 59 Asserts.assertTrue(GCHelper.isValidG1HeapRegionType(Events.assertField(event, "type").getValue())); 60 Events.assertField(event, "used").atMost(1L*1024*1024); 61 } 62 63 } catch (Throwable t) { 64 if (recording != null) { 65 recording.dump(Paths.get("TestG1HeapRegionInformationEvent.jfr")); 66 } 67 throw t; 68 } finally { 69 if (recording != null) { 70 recording.close(); 71 } 72 } 73 } 74 }