1 /*

     2  * Copyright (c) 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.jvm;

    27 

    28 import java.io.IOException;

    29 import java.time.Duration;

    30 import java.util.ArrayList;

    31 import java.util.Collections;

    32 import java.util.HashMap;

    33 import java.util.List;

    34 import java.util.Map;

    35 

    36 import jdk.jfr.Event;

    37 import jdk.jfr.EventFactory;

    38 import jdk.jfr.Recording;

    39 import jdk.jfr.ValueDescriptor;

    40 import jdk.jfr.consumer.RecordedEvent;

    41 import jdk.test.lib.Asserts;

    42 import jdk.test.lib.jfr.EventTypePrototype;

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

    44 import jdk.test.lib.jfr.Stressor;

    45 

    46 /*

    47  * @test TestLargeJavaEvent512k

    48  * @key jfr

    49  * @library /test/lib

    50  * @modules jdk.jfr/jdk.jfr.internal

    51  *    java.base/jdk.internal.org.objectweb.asm

    52  * @run main/othervm jdk.jfr.jvm.TestLargeJavaEvent512k

    53  */

    54 public class TestLargeJavaEvent512k {

    55     static boolean error;

    56     static void setError() {

    57         error = true;

    58     }

    59     static boolean hasError() {

    60         return error;

    61     }

    62 

    63     public static void main(String... args) throws Exception {

    64         final String name = "MyLargeJavaEvent512k"; // name of synthetically generated event

    65         final String fieldNamePrefix = "myfield";

    66         final int numberOfFields = 64; // 64*8k = 512k event size

    67         final Map<String, Object> eventMap = new HashMap<>();

    68         final int numberOfThreads = 10; // 10 threads will run the test

    69         final int numberOfEventsPerThread = 50; // each thread will generate 50 events

    70 

    71         List<ValueDescriptor> fields = new ArrayList<>();

    72         for (int i = 0; i < numberOfFields; ++i) {

    73             String fieldName = fieldNamePrefix + i;

    74             eventMap.put(fieldName, largeString());

    75             fields.add(new ValueDescriptor(String.class, fieldName));

    76         }

    77 

    78         EventTypePrototype prototype = new EventTypePrototype(name,Collections.emptyList(),  fields);

    79 

    80         EventFactory ef = EventFactory.create(prototype.getAnnotations(), prototype.getFields());

    81 

    82         Recording r = new Recording();

    83         r.enable(prototype.getName()).withThreshold(Duration.ofNanos(0)).withoutStackTrace();

    84         r.start();

    85 

    86         Thread.UncaughtExceptionHandler eh = (t, e) -> TestLargeJavaEvent512k.setError();

    87 

    88         Stressor.execute(numberOfThreads, eh, () -> {

    89             for (int n = 0; n < numberOfEventsPerThread; ++n) {

    90                 try {

    91                     Event event = ef.newEvent();

    92                     setEventValues(event, ef, prototype, eventMap);

    93                     event.commit();

    94                     Thread.sleep(1);

    95                 } catch (Exception ex) {

    96                     throw new RuntimeException(ex);

    97                 }

    98             }

    99         });

   100         r.stop();

   101         try {

   102             if (hasError()) {

   103                 throw new RuntimeException("One (or several) of the threads had an exception/error, test failed");

   104             }

   105             verifyEvents(r, numberOfThreads, numberOfEventsPerThread, eventMap);

   106         } finally {

   107             r.close();

   108         }

   109     }

   110 

   111     private static void verifyEvents(Recording r, int numberOfThreads, int iterations, Map<String, Object> fields) throws IOException {

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

   113         Events.hasEvents(recordedEvents);

   114         int eventCount = 0;

   115         for (RecordedEvent re : recordedEvents) {

   116             verify(re, fields);

   117             eventCount++;

   118         }

   119         System.out.println("Number of expected events: " + numberOfThreads * iterations);

   120         System.out.println("Number of events found: " + eventCount);

   121         Asserts.assertEquals(numberOfThreads * iterations, eventCount, "Unexpected number of events");

   122     }

   123 

   124     // each row is 64 chars for 128 rows == 8192 chars

   125     private static String largeString() {

   126         StringBuilder builder = new StringBuilder();

   127         for (int i = 0; i < 128; ++i) {

   128             builder.append("cygwinapacygwinapacygwinapacygwinapacygwinapacygwinapacygwinapa ");

   129         }

   130         return builder.toString();

   131     }

   132 

   133     private static void setEventValues(Event event, EventFactory f, EventTypePrototype prototype, Map<String, Object> fields) {

   134         for (Map.Entry<String, Object> entry : fields.entrySet()) {

   135             int index = prototype.getFieldIndex(entry.getKey());

   136             event.set(index, entry.getValue());

   137         }

   138     }

   139 

   140     private static void verify(RecordedEvent event, Map<String, Object> fields) {

   141         for (Map.Entry<String, Object> entry : fields.entrySet()) {

   142             String fieldName = entry.getKey();

   143             Object value = event.getValue(fieldName);

   144             Object expected = fields.get(fieldName);

   145             Asserts.assertEQ(value, expected);

   146         }

   147     }

   148 }