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.Event;
  29 import jdk.jfr.FlightRecorder;
  30 
  31 /*
  32  * @test
  33  * @summary Check that an IllegalArgumentException is thrown if event is added twice
  34  * @key jfr
  35  * @library /lib/testlibrary
  36  * @run main/othervm jdk.jfr.api.flightrecorder.TestPeriodicEventsSameHook
  37  */
  38 public class TestPeriodicEventsSameHook {
  39 
  40     private static class MyEvent extends Event {
  41     }
  42 
  43     private static class MyHook implements Runnable {
  44         @Override
  45         public void run() {
  46         }
  47     }
  48 
  49     public static void main(String[] args) throws Exception {
  50         MyHook hook = new MyHook();
  51         FlightRecorder.addPeriodicEvent(MyEvent.class, hook);
  52         try {
  53             FlightRecorder.addPeriodicEvent(MyEvent.class, hook);
  54             throw new Exception("Expected IllegalArgumentException when adding same hook twice");
  55         } catch (IllegalArgumentException iae) {
  56             if (!iae.getMessage().equals("Hook has already been added")) {
  57                 throw new Exception("Expected IllegalArgumentException with message 'Hook has already been added'");
  58             }
  59         }
  60     }
  61 }