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 * @requires vm.hasJFR
50 * @library /test/lib
51 * @modules jdk.jfr/jdk.jfr.internal
52 * java.base/jdk.internal.org.objectweb.asm
53 * @run main/othervm jdk.jfr.jvm.TestLargeJavaEvent512k
54 */
55 public class TestLargeJavaEvent512k {
56 static boolean error;
57 static void setError() {
58 error = true;
59 }
60 static boolean hasError() {
61 return error;
62 }
63
64 public static void main(String... args) throws Exception {
65 final String name = "MyLargeJavaEvent512k"; // name of synthetically generated event
66 final String fieldNamePrefix = "myfield";
67 final int numberOfFields = 64; // 64*8k = 512k event size
68 final Map<String, Object> eventMap = new HashMap<>();
69 final int numberOfThreads = 10; // 10 threads will run the test
70 final int numberOfEventsPerThread = 50; // each thread will generate 50 events
71
72 List<ValueDescriptor> fields = new ArrayList<>();
73 for (int i = 0; i < numberOfFields; ++i) {
74 String fieldName = fieldNamePrefix + i;
75 eventMap.put(fieldName, largeString());
76 fields.add(new ValueDescriptor(String.class, fieldName));
77 }
78
79 EventTypePrototype prototype = new EventTypePrototype(name,Collections.emptyList(), fields);
80
81 EventFactory ef = EventFactory.create(prototype.getAnnotations(), prototype.getFields());
82
83 Recording r = new Recording();
84 r.enable(prototype.getName()).withThreshold(Duration.ofNanos(0)).withoutStackTrace();
85 r.start();
86
87 Thread.UncaughtExceptionHandler eh = (t, e) -> TestLargeJavaEvent512k.setError();
88
89 Stressor.execute(numberOfThreads, eh, () -> {
90 for (int n = 0; n < numberOfEventsPerThread; ++n) {
91 try {
92 Event event = ef.newEvent();
93 setEventValues(event, ef, prototype, eventMap);
94 event.commit();
95 Thread.sleep(1);
96 } catch (Exception ex) {
97 throw new RuntimeException(ex);
98 }
99 }
100 });
101 r.stop();
102 try {
103 if (hasError()) {
104 throw new RuntimeException("One (or several) of the threads had an exception/error, test failed");
105 }
106 verifyEvents(r, numberOfThreads, numberOfEventsPerThread, eventMap);
107 } finally {
108 r.close();
109 }
110 }
111
112 private static void verifyEvents(Recording r, int numberOfThreads, int iterations, Map<String, Object> fields) throws IOException {
113 List<RecordedEvent> recordedEvents = Events.fromRecording(r);
114 Events.hasEvents(recordedEvents);
115 int eventCount = 0;
116 for (RecordedEvent re : recordedEvents) {
117 verify(re, fields);
118 eventCount++;
119 }
120 System.out.println("Number of expected events: " + numberOfThreads * iterations);
121 System.out.println("Number of events found: " + eventCount);
122 Asserts.assertEquals(numberOfThreads * iterations, eventCount, "Unexpected number of events");
123 }
124
125 // each row is 64 chars for 128 rows == 8192 chars
126 private static String largeString() {
127 StringBuilder builder = new StringBuilder();
128 for (int i = 0; i < 128; ++i) {
129 builder.append("cygwinapacygwinapacygwinapacygwinapacygwinapacygwinapacygwinapa ");
130 }
131 return builder.toString();
132 }
133
134 private static void setEventValues(Event event, EventFactory f, EventTypePrototype prototype, Map<String, Object> fields) {
135 for (Map.Entry<String, Object> entry : fields.entrySet()) {
136 int index = prototype.getFieldIndex(entry.getKey());
137 event.set(index, entry.getValue());
138 }
139 }
140
141 private static void verify(RecordedEvent event, Map<String, Object> fields) {
142 for (Map.Entry<String, Object> entry : fields.entrySet()) {
143 String fieldName = entry.getKey();
144 Object value = event.getValue(fieldName);
145 Object expected = fields.get(fieldName);
146 Asserts.assertEQ(value, expected);
147 }
148 }
149 }