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.gc.objectcount; 27 28 import java.util.List; 29 import java.util.Optional; 30 import java.util.stream.Collectors; 31 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 38 /** 39 * @test 40 * @key jfr 41 * 42 * 43 * @library /lib / 44 * @run main/othervm -XX:+UnlockExperimentalVMOptions -XX:-UseFastUnorderedTimeStamps -XX:+UseSerialGC -XX:-UseCompressedOops -XX:MarkSweepDeadRatio=0 -XX:+IgnoreUnrecognizedVMOptions jdk.jfr.event.gc.objectcount.TestObjectCountEvent 45 */ 46 public class TestObjectCountEvent { 47 private static final String objectCountEventPath = EventNames.ObjectCount; 48 private static final String heapSummaryEventPath = EventNames.GCHeapSummary; 49 50 public static void main(String[] args) throws Exception { 51 Recording recording = new Recording(); 52 recording.enable(objectCountEventPath); 53 recording.enable(heapSummaryEventPath); 54 55 ObjectCountEventVerifier.createTestData(); 56 System.gc(); 57 recording.start(); 58 recording.stop(); 59 60 List<RecordedEvent> events = Events.fromRecording(recording); 61 for (RecordedEvent event : events) { 62 System.out.println("Event: " + event); 63 } 64 65 Optional<RecordedEvent> heapSummaryEvent = events.stream() 66 .filter(e -> Events.isEventType(e, heapSummaryEventPath)) 67 .filter(e -> "After GC".equals(Events.assertField(e, "when").getValue())) 68 .findFirst(); 69 Asserts.assertTrue(heapSummaryEvent.isPresent(), "No heapSummary with cause='After GC'"); 70 System.out.println("Found heapSummaryEvent: " + heapSummaryEvent.get()); 71 Events.assertField(heapSummaryEvent.get(), "heapUsed").atLeast(0L).getValue(); 72 int gcId = Events.assertField(heapSummaryEvent.get(), "gcId").getValue(); 73 74 List<RecordedEvent> objCountEvents = events.stream() 75 .filter(e -> Events.isEventType(e, objectCountEventPath)) 76 .filter(e -> isGcId(e, gcId)) 77 .collect(Collectors.toList()); 78 Asserts.assertFalse(objCountEvents.isEmpty(), "No objCountEvents for gcId=" + gcId); 79 ObjectCountEventVerifier.verify(objCountEvents); 80 } 81 82 private static boolean isGcId(RecordedEvent event, int gcId) { 83 return gcId == (int)Events.assertField(event, "gcId").getValue(); 84 } 85 86 }