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 package jdk.jfr.api.event;

    26 

    27 import java.util.List;

    28 

    29 import jdk.jfr.Recording;

    30 import jdk.jfr.consumer.RecordedEvent;

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

    32 import jdk.test.lib.jfr.SimpleEvent;

    33 

    34 /**

    35  * @test

    36  * @summary Tests that a duration is recorded.

    37  * @key jfr

    38  * @requires vm.hasJFR

    39  * @library /test/lib

    40  * @run main/othervm jdk.jfr.api.event.TestEventDuration

    41  */

    42 public class TestEventDuration {

    43 

    44     public static int counter;

    45 

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

    47 

    48         try(Recording r = new Recording()) {

    49             r.start();

    50             SimpleEvent e = new SimpleEvent();

    51             e.begin();

    52             for (int i = 0; i < 10_000;i++) {

    53                 counter+=i;

    54             }

    55             e.end();

    56             e.commit();

    57 

    58             r.stop();

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

    60             if (events.get(0).getDuration().toNanos() < 1) {

    61                 throw new AssertionError("Expected a duration");

    62             }

    63         }

    64 

    65     }

    66 

    67 }