1 /* 2 * Copyright (c) 2018, 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 26 package jdk.jfr.api.flightrecorder; 27 28 import jdk.jfr.FlightRecorder; 29 import jdk.jfr.Recording; 30 import jdk.jfr.RecordingState; 31 32 /* 33 * @test 34 * @key jfr 35 * @library /lib/testlibrary 36 * @build jdk.jfr.api.flightrecorder.MyListener 37 * @run main/othervm jdk.jfr.api.flightrecorder.TestAddListenerTwice 38 */ 39 public class TestAddListenerTwice { 40 41 public static void main(String[] args) throws Throwable { 42 MyListener listener = new MyListener(); 43 44 FlightRecorder.addListener(listener); 45 FlightRecorder.addListener(listener); 46 47 Recording r1 = new Recording(); 48 r1.start(); 49 listener.verifyState(2, RecordingState.RUNNING); 50 51 FlightRecorder.removeListener(listener); // Should still get callback to one listener. 52 r1.stop(); 53 listener.verifyState(3, RecordingState.STOPPED); 54 r1.close(); 55 listener.verifyState(4, RecordingState.CLOSED); 56 } 57 58 }