1 /*
   2  * Copyright (c) 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.startupargs;
  27 
  28 import jdk.jfr.Event;
  29 import jdk.jfr.EventType;
  30 import jdk.jfr.FlightRecorder;
  31 import jdk.jfr.Name;
  32 import jdk.jfr.Recording;
  33 
  34 /**
  35  * @test
  36  * @summary Start a FlightRecording without any settings (not even default).
  37  * @key jfr
  38  * @library /lib /
  39  * @run main/othervm jdk.jfr.startupargs.TestStartNoSettings
  40  *      -XX:StartFlightRecording=settings=none
  41  */
  42 public class TestStartNoSettings {
  43 
  44     @Name("UserEvent")
  45     static class UserEvent extends Event {
  46     }
  47 
  48     public static void main(String[] a) throws Exception {
  49         boolean userEnabled = false;
  50         try (Recording r = new Recording()) {
  51             r.start();
  52             UserEvent e = new UserEvent();
  53             e.commit();
  54             for (EventType et : FlightRecorder.getFlightRecorder().getEventTypes()) {
  55                 if (et.isEnabled()) {
  56                     if (!et.getName().equals("UserEvent")) {
  57                         throw new Exception("Only 'UserEvent' should be enabled");
  58                     }
  59                     userEnabled = true;
  60                 }
  61             }
  62         }
  63 
  64         if (!userEnabled)  {
  65             throw new Exception("Expected 'UserEvent' to be enabled with -XX:StartFlightRecording=settings=none");
  66         }
  67     }
  68 }