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