1 /* 2 * Copyright (c) 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.api.recording.event; 27 28 import java.lang.reflect.Constructor; 29 import java.time.Duration; 30 import java.util.ArrayList; 31 import java.util.List; 32 33 import jdk.jfr.Event; 34 import jdk.jfr.Recording; 35 import jdk.jfr.consumer.RecordedEvent; 36 import jdk.test.lib.Asserts; 37 import jdk.test.lib.jfr.Events; 38 39 /** 40 * @test 41 * @summary Load event class after recording started. 42 * @key jfr 43 * 44 * @library /lib / 45 * @build jdk.test.lib.jfr.SimpleEvent 46 * @run main/othervm jdk.jfr.api.recording.event.TestLoadEventAfterStart 47 */ 48 public class TestLoadEventAfterStart { 49 50 public static void main(String[] args) throws Throwable { 51 Recording r = new Recording(); 52 r.start(); 53 54 ClassLoader classLoader = TestLoadEventAfterStart.class.getClassLoader(); 55 Class<? extends Event> eventClass = 56 classLoader.loadClass("jdk.test.lib.jfr.SimpleEvent").asSubclass(Event.class); 57 58 r.enable(eventClass).withThreshold(Duration.ofMillis(0)).withoutStackTrace(); 59 createEvent(eventClass, 1); 60 r.disable(eventClass); 61 createEvent(eventClass, 2); 62 r.enable(eventClass).withThreshold(Duration.ofMillis(0)).withoutStackTrace(); 63 createEvent(eventClass, 3); 64 65 r.stop(); 66 verifyEvents(r, 1, 3); 67 } 68 69 private static void verifyEvents(Recording r, int ... ids) throws Exception { 70 List<Integer> eventIds = new ArrayList<>(); 71 for (RecordedEvent event : Events.fromRecording(r)) { 72 int id = Events.assertField(event, "id").getValue(); 73 System.out.println("Event id:" + id); 74 eventIds.add(id); 75 } 76 Asserts.assertEquals(eventIds.size(), ids.length, "Wrong number of events"); 77 for (int i = 0; i < ids.length; ++i) { 78 Asserts.assertEquals(eventIds.get(i).intValue(), ids[i], "Wrong id in event"); 79 } 80 } 81 82 private static void createEvent(Class<? extends Event> eventClass, int id) throws Exception { 83 Constructor<? extends Event> constructor = eventClass.getConstructor(); 84 Event event = (Event) constructor.newInstance(); 85 event.begin(); 86 eventClass.getDeclaredField("id").setInt(event, id); 87 event.end(); 88 event.commit(); 89 } 90 }