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.heapsummary; 27 28 import java.time.Duration; 29 import java.util.List; 30 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 * @key jfr 41 * @requires (vm.gc == "ConcMarkSweep" | vm.gc == null) 42 * & vm.opt.ExplicitGCInvokesConcurrent != false 43 * @library /test/lib /test/jdk 44 * @run main/othervm -XX:+UnlockExperimentalVMOptions -XX:-UseFastUnorderedTimeStamps -XX:+UseConcMarkSweepGC -XX:+ExplicitGCInvokesConcurrent jdk.jfr.event.gc.heapsummary.TestHeapSummaryEventConcurrentCMS 45 */ 46 public class TestHeapSummaryEventConcurrentCMS { 47 48 public static void main(String[] args) throws Exception { 49 Recording recording = new Recording(); 50 recording.enable(EventNames.GarbageCollection).withThreshold(Duration.ofMillis(0)); 51 recording.enable(EventNames.GCHeapSummary).withThreshold(Duration.ofMillis(0)); 52 53 recording.start(); 54 // Need several GCs to ensure at least one heap summary event from concurrent CMS 55 GCHelper.callSystemGc(6, true); 56 recording.stop(); 57 58 // Remove first and last GCs which can be incomplete 59 List<RecordedEvent> events = GCHelper.removeFirstAndLastGC(Events.fromRecording(recording)); 60 Asserts.assertFalse(events.isEmpty(), "No events found"); 61 for (RecordedEvent event : events) { 62 System.out.println("Event: " + event); 63 if (!isCmsGcEvent(event)) { 64 continue; 65 } 66 int gcId = Events.assertField(event, "gcId").getValue(); 67 verifyHeapSummary(events, gcId, "Before GC"); 68 verifyHeapSummary(events, gcId, "After GC"); 69 } 70 } 71 72 private static boolean isCmsGcEvent(RecordedEvent event) { 73 if (!Events.isEventType(event, EventNames.GarbageCollection)) { 74 return false; 75 } 76 final String gcName = Events.assertField(event, "name").notEmpty().getValue(); 77 return "ConcurrentMarkSweep".equals(gcName); 78 } 79 80 private static void verifyHeapSummary(List<RecordedEvent> events, int gcId, String when) { 81 for (RecordedEvent event : events) { 82 if (!Events.isEventType(event, EventNames.GCHeapSummary)) { 83 continue; 84 } 85 if (gcId == (int)Events.assertField(event, "gcId").getValue() && 86 when.equals(Events.assertField(event, "when").getValue())) { 87 System.out.printf("Found " + EventNames.GCHeapSummary + " for id=%d, when=%s%n", gcId, when); 88 return; 89 } 90 } 91 Asserts.fail(String.format("No " + EventNames.GCHeapSummary + " for id=%d, when=%s", gcId, when)); 92 } 93 94 }