1 /*

     2  * Copyright (c) 2018, 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.event;

    27 

    28 import java.time.Duration;

    29 import java.util.List;

    30 

    31 import jdk.jfr.Event;

    32 import jdk.jfr.Recording;

    33 import jdk.jfr.consumer.RecordedEvent;

    34 import jdk.test.lib.jfr.Events;

    35 

    36 /*

    37  * @test

    38  * @summary Enable an event from a static function in the event.

    39  * @key jfr

    40  * @library /test/lib

    41  * @run main/othervm jdk.jfr.api.event.TestStaticEnable

    42  */

    43 public class TestStaticEnable {

    44 

    45     public static void main(String[] args) throws Exception {

    46         Recording r = new Recording();

    47         MyEvent.enable(r, true);

    48         r.start();

    49         MyEvent.create("Hello", 1);

    50         r.stop();

    51 

    52         List<RecordedEvent> events = Events.fromRecording(r);

    53         Events.hasEvents(events);

    54         for (RecordedEvent event : events) {

    55             System.out.println("Event:" + event);

    56             Events.assertField(event, "msg").equal("Hello");

    57             Events.assertField(event, "id").equal(1L);

    58         }

    59         r.close();

    60     }

    61 

    62 

    63     public static class MyEvent extends Event {

    64         public String msg;

    65         long id;

    66 

    67         public static void enable(Recording r, boolean isEnabled) {

    68             if (isEnabled) {

    69                 r.enable(MyEvent.class).withThreshold(Duration.ofMillis(0)).withoutStackTrace();

    70             } else {

    71                 r.disable(MyEvent.class);

    72             }

    73         }

    74 

    75         public static void create(String msg, long id) {

    76             MyEvent event = new MyEvent();

    77             event.msg = msg;

    78             event.id = id;

    79             event.begin();

    80             event.end();

    81             event.commit();

    82         }

    83     }

    84 

    85 }