1 /*

     2  * Copyright (c) 2016, 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 package jdk.jfr.api.event;

    26 

    27 import java.time.Duration;

    28 import java.util.ArrayList;

    29 import java.util.List;

    30 

    31 import jdk.jfr.Recording;

    32 import jdk.jfr.consumer.RecordedEvent;

    33 import jdk.test.lib.Asserts;

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

    35 import jdk.test.lib.jfr.EventNames;

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

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

    38 

    39 /*

    40  * @test

    41  * @summary Test for RecordedEvent.getDuration()

    42  * @key jfr

    43  * @library /test/lib

    44  * @run main/othervm jdk.jfr.api.event.TestGetDuration

    45  */

    46 public class TestGetDuration {

    47 

    48     private static final int DURATIONAL_EVENT_ID = 1;

    49     private static final int INSTANT_EVENT_ID = 2;

    50 

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

    52         verifyCustomEvents();

    53         verifyNativeEvents();

    54     }

    55 

    56     private static void verifyCustomEvents() throws Exception {

    57         boolean fastTimeEnabled = CommonHelper.hasFastTimeEnabled();

    58         System.out.println("Fast time enabled: " + fastTimeEnabled);

    59         Recording r = new Recording();

    60         r.enable(SimpleEvent.class).withoutStackTrace();

    61         r.enable(EventNames.CPUTimeStampCounter); // for debugging purposes

    62         r.start();

    63 

    64         SimpleEvent durational = new SimpleEvent();

    65         durational.begin();

    66         durational.id = DURATIONAL_EVENT_ID;

    67         if (!fastTimeEnabled) {

    68             // if we have a low resolution clock sleep until time changes

    69             CommonHelper.waitForSystemCurrentMillisToChange();

    70         }

    71         durational.end();

    72         durational.commit();

    73 

    74         SimpleEvent instant = new SimpleEvent();

    75         instant.id = INSTANT_EVENT_ID;

    76         instant.commit();

    77 

    78         r.stop();

    79 

    80         List<RecordedEvent> recordedEvents = Events.fromRecording(r);

    81         List<RecordedEvent> testEvents = new ArrayList<>();

    82         for (RecordedEvent e : recordedEvents) {

    83             System.out.println(e); // for debugging time related issues

    84             if (!e.getEventType().getName().equals(EventNames.CPUTimeStampCounter)) {

    85                 testEvents.add(e);

    86             }

    87         }

    88         Events.hasEvents(testEvents);

    89         for (RecordedEvent re : testEvents) {

    90             int id = re.getValue("id");

    91             Asserts.assertEquals(re.getDuration(), Duration.between(re.getStartTime(), re.getEndTime()));

    92             switch (id) {

    93                 case DURATIONAL_EVENT_ID:

    94                     Asserts.assertTrue(!re.getDuration().isNegative() && !re.getDuration().isZero());

    95                     break;

    96                 case INSTANT_EVENT_ID:

    97                     Asserts.assertTrue(re.getDuration().isZero());

    98                     break;

    99             }

   100         }

   101     }

   102 

   103     private static void verifyNativeEvents() throws Exception {

   104         Recording r = new Recording();

   105         r.enable(EventNames.JVMInformation);

   106         r.enable(EventNames.ThreadSleep);

   107         r.start();

   108         // Should trigger a sleep event even if we

   109         // have a low resolution clock

   110         Thread.sleep(200);

   111         r.stop();

   112         List<RecordedEvent> recordedEvents = Events.fromRecording(r);

   113         Events.hasEvents(recordedEvents);

   114         for (RecordedEvent re : recordedEvents) {

   115             Asserts.assertEquals(re.getDuration(), Duration.between(re.getStartTime(), re.getEndTime()));

   116             switch (re.getEventType().getName()) {

   117                 case EventNames.JVMInformation:

   118                     Asserts.assertTrue(re.getDuration().isZero());

   119                     break;

   120                 case EventNames.ThreadSleep:

   121                     Asserts.assertTrue(!re.getDuration().isNegative() && !re.getDuration().isZero());

   122                     break;

   123                 default:

   124                     Asserts.fail("Unexpected event: " + re);

   125                     break;

   126             }

   127         }

   128     }

   129 

   130 }