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.runtime; 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.jfr.consumer.RecordedThread; 34 import jdk.test.lib.jfr.EventNames; 35 import jdk.test.lib.jfr.Events; 36 37 /** 38 * @test 39 * @requires vm.hasJFR 40 * @requires vm.gc == "Parallel" | vm.gc == null 41 * @key jfr 42 * @library /test/lib 43 * @run main/othervm -XX:+UseParallelGC jdk.jfr.event.runtime.TestVMOperation 44 */ 45 public class TestVMOperation { 46 47 private static final String EVENT_NAME = EventNames.ExecuteVMOperation; 48 private static final String VM_OPERATION = "ParallelGCSystemGC"; 49 50 public static void main(String[] args) throws Throwable { 51 Recording recording = new Recording(); 52 recording.enable(EVENT_NAME).withThreshold(Duration.ofMillis(0)); 53 recording.start(); 54 System.gc(); 55 recording.stop(); 56 57 List<RecordedEvent> events = Events.fromRecording(recording); 58 Events.hasEvents(events); 59 for (RecordedEvent event : Events.fromRecording(recording)) { 60 String operation = Events.assertField(event, "operation").notEmpty().getValue(); 61 if (operation.equals(VM_OPERATION)) { 62 Events.assertField(event, "safepoint").equal(true); 63 Events.assertField(event, "blocking").equal(true); 64 RecordedThread jt = event.getValue("caller"); 65 if (Thread.currentThread().getName().equals(jt.getJavaName())) { 66 return; 67 } 68 } 69 } 70 throw new AssertionError("No matching event with VM operation name " + VM_OPERATION + " and current threasd as caller"); 71 } 72 }