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.recording.state; 27 28 import static jdk.testlibrary.Asserts.assertEquals; 29 30 import jdk.jfr.FlightRecorder; 31 import jdk.jfr.FlightRecorderListener; 32 import jdk.jfr.Recording; 33 34 /* 35 * @test 36 * @summary Test Recording state with concurrent recordings 37 * @key jfr 38 * @library /lib/testlibrary 39 * @run main/othervm jdk.jfr.api.recording.state.TestStateIdenticalListeners 40 */ 41 public class TestStateIdenticalListeners { 42 43 public static void main(String[] args) throws Throwable { 44 TestListener testListener = new TestListener(); 45 // Add the same listener twice 46 FlightRecorder.addListener(testListener); 47 FlightRecorder.addListener(testListener); 48 49 // Start recording 50 Recording recording = new Recording(); 51 recording.start(); 52 recording.stop(); 53 54 // We expect 4 notifications in total: 1 RUNNING and 1 STOPPED 55 // notification for each listener registration 56 // NOT 2 notifications: we have added the same listener again 57 assertEquals(4, testListener.notificationCount, "Expected 2 notifications, got " + testListener.notificationCount); 58 59 System.out.println("Test Passed"); 60 recording.close(); 61 } 62 63 private static class TestListener implements FlightRecorderListener { 64 private int notificationCount; 65 66 @Override 67 public void recordingStateChanged(Recording recording) { 68 System.out.println("recordingStateChanged: " + " recording: " + recording + " state: " + recording.getState()); 69 ++notificationCount; 70 } 71 } 72 }