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.api.consumer.recordingstream;

    27 

    28 import java.util.concurrent.CountDownLatch;

    29 import java.util.concurrent.atomic.AtomicBoolean;

    30 import java.util.function.Consumer;

    31 

    32 import jdk.jfr.Event;

    33 import jdk.jfr.consumer.RecordingStream;

    34 

    35 /**

    36  * @test

    37  * @summary Tests RecordingStream::disable(...)

    38  * @key jfr

    39  * @requires vm.hasJFR

    40  * @library /test/lib

    41  * @run main/othervm jdk.jfr.api.consumer.recordingstream.TestDisable

    42  */

    43 public class TestDisable {

    44 

    45     private static class DisabledEvent extends Event {

    46     }

    47 

    48     private static class EnabledEvent extends Event {

    49     }

    50 

    51     public static void main(String... args) throws Exception {

    52         testDisableWithClass();

    53         testDisableWithEventName();

    54     }

    55 

    56     private static void testDisableWithEventName() {

    57         test(r -> r.disable(DisabledEvent.class.getName()));

    58     }

    59 

    60     private static void testDisableWithClass() {

    61         test(r -> r.disable(DisabledEvent.class));

    62     }

    63 

    64     private static void test(Consumer<RecordingStream> disablement) {

    65         CountDownLatch twoEvent = new CountDownLatch(2);

    66         AtomicBoolean fail = new AtomicBoolean(false);

    67         try(RecordingStream r = new RecordingStream()) {

    68             r.onEvent(e -> {

    69                 if (e.getEventType().getName().equals(DisabledEvent.class.getName())) {

    70                     fail.set(true);

    71                 }

    72                 twoEvent.countDown();

    73             });

    74             disablement.accept(r);

    75             r.startAsync();

    76             EnabledEvent e1 = new EnabledEvent();

    77             e1.commit();

    78             DisabledEvent d1 = new DisabledEvent();

    79             d1.commit();

    80             EnabledEvent e2 = new EnabledEvent();

    81             e2.commit();

    82             try {

    83                 twoEvent.await();

    84             } catch (InterruptedException ie) {

    85                 throw new RuntimeException("Unexpexpected interruption of thread", ie);

    86             }

    87             if (fail.get()) {

    88                 throw new RuntimeException("Should not receive a disabled event");

    89             }

    90         }

    91     }

    92 }