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 }