1 /*
   2  * Copyright (c) 2013, 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.event.gc.configuration;
  27 
  28 import static jdk.test.lib.Asserts.assertGreaterThanOrEqual;
  29 
  30 import java.util.List;
  31 
  32 import jdk.jfr.Recording;
  33 import jdk.jfr.consumer.RecordedEvent;
  34 import jdk.test.lib.jfr.EventNames;
  35 import jdk.test.lib.jfr.EventVerifier;
  36 import jdk.test.lib.jfr.Events;
  37 
  38 /**
  39  * @test
  40  * @key jfr
  41  *
  42  *
  43  * @library /lib /
  44  * @run main/othervm -XX:+UnlockExperimentalVMOptions -XX:-UseFastUnorderedTimeStamps -XX:+UseParallelGC -XX:+UseParallelOldGC -XX:ParallelGCThreads=3 -XX:ConcGCThreads=2 -XX:+UseDynamicNumberOfGCThreads -XX:-ExplicitGCInvokesConcurrent -XX:-DisableExplicitGC -XX:MaxGCPauseMillis=800 -XX:GCTimeRatio=19 jdk.jfr.event.gc.configuration.TestGCConfigurationEvent
  45  */
  46 public class TestGCConfigurationEvent {
  47     public static void main(String[] args) throws Exception {
  48         Recording recording = new Recording();
  49         recording.enable(EventNames.GCConfiguration);
  50         recording.start();
  51         recording.stop();
  52         List<RecordedEvent> events = Events.fromRecording(recording);
  53         assertGreaterThanOrEqual(events.size(), 1, "Expected at least 1 event");
  54         GCConfigurationEventVerifier verifier = new GCConfigurationEventVerifier(events.get(0));
  55         verifier.verify();
  56     }
  57 }
  58 
  59 class GCConfigurationEventVerifier extends EventVerifier {
  60     public GCConfigurationEventVerifier(RecordedEvent event) {
  61         super(event);
  62     }
  63 
  64     @Override
  65     public void verify() throws Exception {
  66         verifyYoungGCIs("ParallelScavenge");
  67         verifyOldGCIs("ParallelOld");
  68         verifyParallelGCThreadsIs(3);
  69         verifyConcurrentGCThreadsIs(2);
  70         verifyUsesDynamicGCThreadsIs(true);
  71         verifyIsExplicitGCConcurrentIs(false);
  72         verifyIsExplicitGCDisabledIs(false);
  73         verifyPauseTargetIs(800);
  74         verifyGCTimeRatioIs(19);
  75     }
  76 
  77     private void verifyYoungGCIs(String expected) throws Exception {
  78         verifyEquals("youngCollector", expected);
  79     }
  80 
  81     private void verifyOldGCIs(String expected) throws Exception {
  82         verifyEquals("oldCollector", expected);
  83     }
  84 
  85     private void verifyParallelGCThreadsIs(int expected) throws Exception {
  86         verifyEquals("parallelGCThreads", expected);
  87     }
  88 
  89     private void verifyConcurrentGCThreadsIs(int expected) throws Exception {
  90         verifyEquals("concurrentGCThreads", expected);
  91     }
  92 
  93     private void verifyUsesDynamicGCThreadsIs(boolean expected) throws Exception {
  94         verifyEquals("usesDynamicGCThreads", expected);
  95     }
  96 
  97     private void verifyIsExplicitGCConcurrentIs(boolean expected) throws Exception {
  98         verifyEquals("isExplicitGCConcurrent", expected);
  99     }
 100 
 101     private void verifyIsExplicitGCDisabledIs(boolean expected) throws Exception {
 102         verifyEquals("isExplicitGCDisabled", expected);
 103     }
 104 
 105     private void verifyPauseTargetIs(long expected) throws Exception {
 106         verifyEquals("pauseTarget", expected);
 107     }
 108 
 109     private void verifyGCTimeRatioIs(int expected) throws Exception {
 110         verifyEquals("gcTimeRatio", expected);
 111     }
 112 }