1 /*
   2  * Copyright (c) 2013, 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.event.gc.configuration;
  27 
  28 import static jdk.testlibrary.Asserts.assertGreaterThanOrEqual;
  29 
  30 import java.util.List;
  31 
  32 import jdk.jfr.Recording;
  33 import jdk.jfr.consumer.RecordedEvent;
  34 import jdk.testlibrary.jfr.EventNames;
  35 import jdk.testlibrary.jfr.EventVerifier;
  36 import jdk.testlibrary.jfr.Events;
  37 
  38 /*
  39  * @test
  40  * @key jfr
  41  * @requires vm.gc == "Parallel" | vm.gc == null
  42  * @library /lib/testlibrary
  43  * @run main/othervm -XX:+UnlockExperimentalVMOptions -XX:-UseFastUnorderedTimeStamps -XX:+UseParallelGC -XX:+UseParallelOldGC -XX:MaxTenuringThreshold=13 -XX:InitialTenuringThreshold=9 jdk.jfr.event.gc.configuration.TestGCSurvivorConfigurationEvent
  44  */
  45 public class TestGCSurvivorConfigurationEvent {
  46     public static void main(String[] args) throws Exception {
  47         Recording recording = new Recording();
  48         recording.enable(EventNames.GCSurvivorConfiguration);
  49         recording.start();
  50         recording.stop();
  51         List<RecordedEvent> events = Events.fromRecording(recording);
  52         assertGreaterThanOrEqual(events.size(), 1, "Expected at least 1 event");
  53         GCSurvivorConfigurationEventVerifier verifier = new GCSurvivorConfigurationEventVerifier(events.get(0));
  54         verifier.verify();
  55     }
  56 }
  57 
  58 class GCSurvivorConfigurationEventVerifier extends EventVerifier {
  59     public GCSurvivorConfigurationEventVerifier(RecordedEvent event) {
  60         super(event);
  61     }
  62 
  63     public void verify() throws Exception {
  64         verifyMaxTenuringThresholdIs(13);
  65         verifyInitialTenuringThresholdIs(9);
  66     }
  67 
  68     private void verifyMaxTenuringThresholdIs(int expected) throws Exception {
  69         verifyEquals("maxTenuringThreshold", (byte)expected);
  70     }
  71 
  72     private void verifyInitialTenuringThresholdIs(int expected) throws Exception {
  73         verifyEquals("initialTenuringThreshold", (byte)expected);
  74     }
  75 }