1 /* 2 * Copyright (c) 2018, 2019, 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 30 import java.io.File; 31 import java.io.RandomAccessFile; 32 import java.nio.ByteBuffer; 33 import java.nio.channels.FileChannel; 34 import java.time.Duration; 35 import java.util.ArrayList; 36 import java.util.List; 37 38 import jdk.jfr.Recording; 39 import jdk.jfr.consumer.RecordedEvent; 40 import jdk.test.lib.Utils; 41 import jdk.test.lib.jfr.Events; 42 43 /** 44 * @test 45 * @key jfr 46 * @requires vm.hasJFR 47 * @library /test/lib /test/jdk 48 * @run main/othervm jdk.jfr.event.io.TestFileChannelEvents 49 */ 50 public class TestFileChannelEvents { main(String[] args)51 public static void main(String[] args) throws Throwable { 52 File tmp = Utils.createTempFile("TestFileChannelEvents", ".tmp").toFile(); 53 Recording recording = new Recording(); 54 List<IOEvent> expectedEvents = new ArrayList<>(); 55 56 try (RandomAccessFile rf = new RandomAccessFile(tmp, "rw"); FileChannel ch = rf.getChannel();) { 57 recording.enable(IOEvent.EVENT_FILE_FORCE).withThreshold(Duration.ofMillis(0)); 58 recording.enable(IOEvent.EVENT_FILE_READ).withThreshold(Duration.ofMillis(0)); 59 recording.enable(IOEvent.EVENT_FILE_WRITE).withThreshold(Duration.ofMillis(0)); 60 recording.start(); 61 62 ByteBuffer bufA = ByteBuffer.allocateDirect(10); 63 ByteBuffer bufB = ByteBuffer.allocateDirect(20); 64 bufA.put("1234567890".getBytes()); 65 bufB.put("1234567890".getBytes()); 66 67 // test write(ByteBuffer) 68 bufA.flip(); 69 long size = ch.write(bufA); 70 expectedEvents.add(IOEvent.createFileWriteEvent(size, tmp)); 71 72 // test write(ByteBuffer, long) 73 bufA.flip(); 74 size = ch.write(bufA, bufA.capacity() / 2); 75 expectedEvents.add(IOEvent.createFileWriteEvent(size, tmp)); 76 77 // test write(ByteBuffer[]) 78 bufA.flip(); 79 bufA.limit(5); 80 bufB.flip(); 81 bufB.limit(5); 82 size = ch.write(new ByteBuffer[] { bufA, bufB }); 83 expectedEvents.add(IOEvent.createFileWriteEvent(size, tmp)); 84 85 // test force(boolean) 86 ch.force(true); 87 expectedEvents.add(IOEvent.createFileForceEvent(tmp)); 88 89 // reset file 90 ch.position(0); 91 92 // test read(ByteBuffer) 93 bufA.clear(); 94 size = ch.read(bufA); 95 expectedEvents.add(IOEvent.createFileReadEvent(size, tmp)); 96 97 // test read(ByteBuffer, long) 98 bufA.clear(); 99 size = ch.read(bufA, bufA.capacity() / 2); 100 expectedEvents.add(IOEvent.createFileReadEvent(size, tmp)); 101 102 // test read(ByteBuffer[]) 103 bufA.clear(); 104 bufA.limit(5); 105 bufB.clear(); 106 bufB.limit(5); 107 size = ch.read(new ByteBuffer[] { bufA, bufB }); 108 expectedEvents.add(IOEvent.createFileReadEvent(size, tmp)); 109 110 // Read at EOF. Should get size -1 in event. 111 ch.position(ch.size()); 112 bufA.clear(); 113 size = ch.read(bufA); 114 assertEquals(size, -1L, "Expected size -1 when read at EOF"); 115 expectedEvents.add(IOEvent.createFileReadEvent(size, tmp)); 116 117 ch.close(); 118 recording.stop(); 119 List<RecordedEvent> events = Events.fromRecording(recording); 120 IOHelper.verifyEqualsInOrder(events, expectedEvents); 121 } 122 } 123 } 124