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.event.io;
27
28 import static jdk.test.lib.Asserts.assertEquals;
29 import static jdk.test.lib.Asserts.assertNotEquals;
30
31 import java.io.File;
32 import java.io.FileInputStream;
33 import java.io.FileOutputStream;
34 import java.io.RandomAccessFile;
35 import java.nio.ByteBuffer;
36 import java.nio.channels.FileChannel;
37
38 import jdk.jfr.Recording;
39 import jdk.jfr.consumer.RecordedEvent;
40 import jdk.test.lib.jfr.Events;
41
42 /**
43 * @test
44 * @summary Test with FlightRecorder enabled but with the events disabled.
45 * @key jfr
46 *
47 * @library /lib /
48 * @run main/othervm jdk.jfr.event.io.TestDisabledEvents
49 */
50
51 // Verify that IO operations are correct and that no events are generated.
52 public class TestDisabledEvents {
53
54 private static final int writeInt = 'A';
55 private static final byte[] writeBuf = { 'B', 'C', 'D' };
56
57 public static void main(String[] args) throws Throwable {
58 File tmp = File.createTempFile("TestDisabledEvents", ".tmp", new File("."));
59 tmp.deleteOnExit();
60 Recording recording = new Recording();
61 recording.disable(IOEvent.EVENT_FILE_READ);
62 recording.disable(IOEvent.EVENT_FILE_WRITE);
63 recording.start();
64
65 useRandomAccessFile(tmp);
66 useFileStreams(tmp);
67 useFileChannel(tmp);
68
69 recording.stop();
70 for (RecordedEvent event : Events.fromRecording(recording)) {
71 final String eventName = event.getEventType().getName();
72 System.out.println("Got eventName:" + eventName);
73 assertNotEquals(eventName, IOEvent.EVENT_FILE_READ, "Got disabled read event");
74 assertNotEquals(eventName, IOEvent.EVENT_FILE_WRITE, "Got disabled write event");
75 }
76 }
77
78 private static void useRandomAccessFile(File tmp) throws Throwable {
79 tmp.delete();
80 try (RandomAccessFile ras = new RandomAccessFile(tmp, "rw")) {
81 ras.write(writeInt);
82 ras.write(writeBuf);
83 ras.seek(0);
84 int readInt = ras.read();
85 assertEquals(readInt, writeInt, "Wrong readInt");
86 byte[] readBuf = new byte[writeBuf.length];
87 int readSize = ras.read(readBuf);
88 assertEquals(readSize, writeBuf.length, "Wrong readSize");
89 // Try to read more which should generate EOF.
90 readInt = ras.read();
91 assertEquals(readInt, -1, "Wrong readInt after EOF");
92 }
93 }
94
95 private static void useFileStreams(File tmp) throws Throwable {
96 tmp.delete();
97 try (FileOutputStream fos = new FileOutputStream(tmp)) {
98 fos.write(writeInt);
99 fos.write(writeBuf);
100 }
101
102 try (FileInputStream fis = new FileInputStream(tmp)) {
103 int readInt = fis.read();
104 assertEquals(readInt, writeInt, "Wrong readInt");
105 byte[] readBuf = new byte[writeBuf.length];
106 int readSize = fis.read(readBuf);
107 assertEquals(readSize, writeBuf.length, "Wrong readSize");
108 // Try to read more which should generate EOF.
109 readInt = fis.read();
110 assertEquals(readInt, -1, "Wrong readInt after EOF");
111 }
112 }
113
114 private static void useFileChannel(File tmp) throws Throwable {
115 tmp.delete();
116 try (RandomAccessFile rf = new RandomAccessFile(tmp, "rw");
117 FileChannel ch = rf.getChannel()) {
118 final String bufContent = "0123456789";
119 final int bufSize = bufContent.length();
120 ByteBuffer writeBuf = ByteBuffer.allocateDirect(bufSize);
121 writeBuf.put(bufContent.getBytes());
122
123 writeBuf.flip();
124 int writeSize = ch.write(writeBuf);
125 assertEquals(writeSize, bufSize, "Wrong writeSize for FileChannel");
126
127 ch.position(0);
128 ByteBuffer readBuf = ByteBuffer.allocateDirect(bufSize);
129 int readSize = ch.read(readBuf);
130 assertEquals(readSize, bufSize, "Wrong readSize full for FileChannel");
131 assertEquals(0, writeBuf.compareTo(readBuf), "Unexpected readBuf content");
132 }
133 }
134 }