--- /dev/null 2017-11-09 09:38:01.297999907 +0100 +++ new/test/jdk/jdk/jfr/event/gc/collection/TestGCGarbageCollectionEvent.java 2018-04-09 17:38:27.604926827 +0200 @@ -0,0 +1,67 @@ +/* + * Copyright (c) 2013, 2018, Oracle and/or its affiliates. All rights reserved. + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. + * + * This code is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 only, as + * published by the Free Software Foundation. Oracle designates this + * particular file as subject to the "Classpath" exception as provided + * by Oracle in the LICENSE file that accompanied this code. + * + * This code is distributed in the hope that it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * version 2 for more details (a copy is included in the LICENSE file that + * accompanied this code). + * + * You should have received a copy of the GNU General Public License version + * 2 along with this work; if not, write to the Free Software Foundation, + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. + * + * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA + * or visit www.oracle.com if you need additional information or have any + * questions. + */ + +package jdk.jfr.event.gc.collection; + +import static jdk.test.lib.Asserts.assertTrue; + +import java.time.Duration; + +import jdk.jfr.Recording; +import jdk.jfr.consumer.RecordedEvent; +import jdk.test.lib.jfr.Events; +import jdk.test.lib.jfr.GCHelper; + +/* + * @test + * @key jfr + * @library /test/lib + * @run main/othervm -Xlog:gc*=debug -XX:+UnlockExperimentalVMOptions -XX:-UseFastUnorderedTimeStamps jdk.jfr.event.gc.collection.TestGCGarbageCollectionEvent + */ +public class TestGCGarbageCollectionEvent { + + private final static String EVENT_NAME = GCHelper.event_garbage_collection; + + public static void main(String[] args) throws Exception { + Recording recording = new Recording(); + recording.enable(EVENT_NAME).withThreshold(Duration.ofMillis(0)); + recording.start(); + System.gc(); + recording.stop(); + + boolean isAnyFound = false; + for (RecordedEvent event : Events.fromRecording(recording)) { + if (!EVENT_NAME.equals(event.getEventType().getName())) { + continue; + } + System.out.println("Event: " + event); + isAnyFound = true; + + long longestPause = Events.assertField(event, "longestPause").atLeast(0L).getValue(); + Events.assertField(event, "sumOfPauses").atLeast(longestPause); + } + assertTrue(isAnyFound, "No matching event found"); + } +}