1 /* 2 * Copyright (c) 2015, 2019, 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 package jdk.jfr.event.gc.detailed; 26 27 import java.util.List; 28 29 import jdk.jfr.Recording; 30 import jdk.jfr.consumer.RecordedEvent; 31 import jdk.testlibrary.jfr.EventNames; 32 import jdk.testlibrary.jfr.Events; 33 34 /* 35 * @test 36 * @key jfr 37 * @requires vm.gc == "G1" | vm.gc == null 38 * @library /lib/testlibrary 39 * @run main/othervm -XX:NewSize=2m -XX:MaxNewSize=2m -Xmx32m -XX:+UseG1GC -XX:+UnlockExperimentalVMOptions -XX:-UseFastUnorderedTimeStamps jdk.jfr.event.gc.detailed.TestG1IHOPEvent 40 */ 41 public class TestG1IHOPEvent { 42 43 private final static String EVENT_NAME = EventNames.G1BasicIHOP; 44 public static byte[] bytes; 45 46 public static void main(String[] args) throws Exception { 47 48 Recording recording = new Recording(); 49 50 // activate the event we are interested in and start recording 51 recording.enable(EVENT_NAME); 52 recording.start(); 53 54 // Setting NewSize and MaxNewSize will limit eden, so 55 // allocating 1024 5k byte arrays should trigger at 56 // least one Young GC. 57 for (int i = 0; i < 1024; i++) { 58 bytes= new byte[5 * 1024]; 59 } 60 recording.stop(); 61 62 // Verify recording 63 List<RecordedEvent> all = Events.fromRecording(recording); 64 Events.hasEvents(all); 65 66 for (RecordedEvent e : all) { 67 Events.assertField(e, "gcId").above(0); 68 } 69 70 recording.close(); 71 72 } 73 }