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  * @requires vm.hasJFR
39  * @library /test/lib
40  * @run main/othervm jdk.jfr.startupargs.TestStartNoSettings
41  *      -XX:StartFlightRecording=settings=none
42  */
43 public class TestStartNoSettings {
44 
45     @Name("UserEvent")
46     static class UserEvent extends Event {
47     }
48 
main(String[] a)49     public static void main(String[] a) throws Exception {
50         boolean userEnabled = false;
51         try (Recording r = new Recording()) {
52             r.start();
53             UserEvent e = new UserEvent();
54             e.commit();
55             for (EventType et : FlightRecorder.getFlightRecorder().getEventTypes()) {
56                 if (et.isEnabled()) {
57                     if (!et.getName().equals("UserEvent")) {
58                         throw new Exception("Only 'UserEvent' should be enabled");
59                     }
60                     userEnabled = true;
61                 }
62             }
63         }
64 
65         if (!userEnabled)  {
66             throw new Exception("Expected 'UserEvent' to be enabled with -XX:StartFlightRecording=settings=none");
67         }
68     }
69 }
70