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.event; 27 28 import java.util.Collections; 29 30 import jdk.jfr.EventFactory; 31 import jdk.jfr.EventType; 32 import jdk.jfr.FlightRecorder; 33 import jdk.test.lib.Asserts; 34 35 36 /** 37 * @test 38 * @summary Verifies that EventFactory can register the same event twice 39 * @key jfr 40 * @requires vm.hasJFR 41 * @library /test/lib 42 * @run main/othervm jdk.jfr.api.event.TestEventFactoryRegisterTwice 43 */ 44 public class TestEventFactoryRegisterTwice { 45 46 public static void main(String[] args) throws Exception { 47 EventFactory factory = EventFactory.create(Collections.emptyList(), Collections.emptyList()); 48 49 EventType eventType = factory.getEventType(); 50 Asserts.assertNotNull(eventType); 51 52 // Now, register the event 53 factory.register(); 54 55 verifyRegistered(eventType); 56 57 // Now, register the event again 58 factory.register(); 59 60 verifyRegistered(eventType); 61 } 62 63 private static void verifyRegistered(EventType eventType) { 64 // Verify the event is registered 65 boolean found = false; 66 for (EventType type : FlightRecorder.getFlightRecorder().getEventTypes()) { 67 if (eventType.getId() == type.getId()) { 68 found = true; 69 } 70 } 71 if(!found) { 72 Asserts.fail("Event not registered"); 73 } 74 } 75 }