--- /dev/null 2018-06-17 23:18:20.806999507 +0800 +++ new/test/jdk/jfr/event/runtime/TestVMOperation.java 2019-01-29 11:04:42.653715844 +0800 @@ -0,0 +1,71 @@ +/* + * Copyright (c) 2013, 2019, 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.runtime; + +import java.time.Duration; +import java.util.List; + +import jdk.jfr.Recording; +import jdk.jfr.consumer.RecordedEvent; +import jdk.jfr.consumer.RecordedThread; +import jdk.testlibrary.jfr.EventNames; +import jdk.testlibrary.jfr.Events; + +/* + * @test + * @requires vm.gc == "Parallel" | vm.gc == null + * @key jfr + * @library /lib/testlibrary + * @run main/othervm -XX:+UseParallelGC jdk.jfr.event.runtime.TestVMOperation + */ +public class TestVMOperation { + + private static final String EVENT_NAME = EventNames.ExecuteVMOperation; + private static final String VM_OPERATION = "ParallelGCSystemGC"; + + public static void main(String[] args) throws Throwable { + Recording recording = new Recording(); + recording.enable(EVENT_NAME).withThreshold(Duration.ofMillis(0)); + recording.start(); + System.gc(); + recording.stop(); + + List events = Events.fromRecording(recording); + Events.hasEvents(events); + for (RecordedEvent event : Events.fromRecording(recording)) { + String operation = Events.assertField(event, "operation").notEmpty().getValue(); + if (operation.equals(VM_OPERATION)) { + Events.assertField(event, "safepoint").equal(true); + Events.assertField(event, "blocking").equal(true); + RecordedThread jt = event.getValue("caller"); + if (Thread.currentThread().getName().equals(jt.getJavaName())) { + return; + } + } + } + throw new AssertionError("No matching event with VM operation name " + VM_OPERATION + " and current threasd as caller"); + } +}