1 /*
   2  * Copyright (c) 2019, 2020, 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.runtime;
  27 
  28 import java.util.List;
  29 import java.util.stream.Collectors;
  30 
  31 import jdk.jfr.Recording;
  32 import jdk.jfr.consumer.RecordedClass;
  33 import jdk.jfr.consumer.RecordedClassLoader;
  34 import jdk.jfr.consumer.RecordedEvent;
  35 import jdk.test.lib.Asserts;
  36 import jdk.test.lib.jfr.EventNames;
  37 import jdk.test.lib.jfr.Events;
  38 
  39 /**
  40  * @test
  41  * @key jfr
  42  * @requires vm.hasJFR
  43  * @library /test/lib /test/jdk
  44  * @modules java.base/jdk.internal.misc
  45  * @build jdk.jfr.event.runtime.TestClasses
  46  * @run main/othervm jdk.jfr.event.runtime.TestTableStatisticsEvent
  47  * @bug 8185525
  48  */
  49 public final class TestTableStatisticsEvent {
  50 
  51   public static void main(String[] args) throws Throwable {
  52     try (Recording recording = new Recording()) {
  53       recording.enable(EventNames.SymbolTableStatistics);
  54       recording.enable(EventNames.StringTableStatistics);
  55       recording.enable(EventNames.PlaceholderTableStatistics);
  56       recording.enable(EventNames.LoaderConstraintsTableStatistics);
  57       recording.enable(EventNames.ProtectionDomainCacheTableStatistics);
  58       recording.start();
  59       recording.stop();
  60 
  61       List<RecordedEvent> events = Events.fromRecording(recording);
  62       verifyTable(events, EventNames.SymbolTableStatistics);
  63       verifyTable(events, EventNames.StringTableStatistics);
  64       verifyTable(events, EventNames.PlaceholderTableStatistics);
  65       verifyTable(events, EventNames.LoaderConstraintsTableStatistics);
  66       verifyTable(events, EventNames.ProtectionDomainCacheTableStatistics);
  67     }
  68   }
  69 
  70   private static void verifyTable(List<RecordedEvent> allEvents, String eventName) throws Exception {
  71     List<RecordedEvent> eventsForTable = allEvents.stream().filter(e -> e.getEventType().getName().equals(eventName)).collect(Collectors.toList());
  72     if (eventsForTable.isEmpty()) {
  73       throw new Exception("No events for " + eventName);
  74     }
  75     for (RecordedEvent event : eventsForTable) {
  76       Events.assertField(event, "bucketCount").atLeast(0L);
  77       long entryCount = Events.assertField(event, "entryCount").atLeast(0L).getValue();
  78       Events.assertField(event, "totalFootprint").atLeast(0L);
  79       float averageBucketCount = Events.assertField(event, "bucketCountAverage").atLeast(0.0f).getValue();
  80       Events.assertField(event, "bucketCountMaximum").atLeast((long)averageBucketCount);
  81       Events.assertField(event, "bucketCountVariance").atLeast(0.0f);
  82       Events.assertField(event, "bucketCountStandardDeviation").atLeast(0.0f);
  83       float insertionRate = Events.assertField(event, "insertionRate").atLeast(0.0f).getValue();
  84       float removalRate = Events.assertField(event, "removalRate").atLeast(0.0f).getValue();
  85       if ((insertionRate > 0.0f) && (insertionRate > removalRate)) {
  86         Asserts.assertGreaterThan(entryCount, 0L, "Entries marked as added, but no entries found for " + eventName);
  87       }
  88     }
  89   }
  90 }