| /* |
| * Copyright (c) 2018, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. Oracle designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Oracle in the LICENSE file that accompanied this code. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| package jdk.jfr.event.io; |
| |
| import static jdk.test.lib.Asserts.assertEquals; |
| |
| import java.io.File; |
| import java.io.RandomAccessFile; |
| import java.time.Duration; |
| import java.util.ArrayList; |
| import java.util.List; |
| |
| import jdk.jfr.Recording; |
| import jdk.jfr.consumer.RecordedEvent; |
| import jdk.test.lib.jfr.Events; |
| |
| /* |
| * @test |
| * @key jfr |
| * @library /test/lib /test/jdk |
| * @run main/othervm jdk.jfr.event.io.TestRandomAccessFileEvents |
| */ |
| public class TestRandomAccessFileEvents { |
| |
| public static void main(String[] args) throws Throwable { |
| File tmp = File.createTempFile("TestRandomAccessFileEvents", ".tmp", new File(".")); |
| tmp.deleteOnExit(); |
| Recording recording = new Recording(); |
| List<IOEvent> expectedEvents = new ArrayList<>(); |
| |
| recording.enable(IOEvent.EVENT_FILE_WRITE).withThreshold(Duration.ofMillis(0)); |
| recording.enable(IOEvent.EVENT_FILE_READ).withThreshold(Duration.ofMillis(0)); |
| recording.start(); |
| |
| RandomAccessFile ras = new RandomAccessFile(tmp, "rw"); |
| int writeInt = 47; |
| byte[] writeBuffer = {10,11,12,13}; |
| |
| // Write an int and a buffer. |
| ras.write(writeInt); |
| expectedEvents.add(IOEvent.createFileWriteEvent(1, tmp)); |
| ras.write(writeBuffer); |
| expectedEvents.add(IOEvent.createFileWriteEvent(writeBuffer.length, tmp)); |
| |
| ras.seek(0); |
| |
| // Read int and buffer |
| int readInt = ras.read(); |
| assertEquals(readInt, writeInt, "wrong int read"); |
| expectedEvents.add(IOEvent.createFileReadEvent(1, tmp)); |
| byte[] readBuffer = new byte [writeBuffer.length]; |
| int size = ras.read(readBuffer); |
| verifyBufferEquals(readBuffer, writeBuffer); |
| expectedEvents.add(IOEvent.createFileReadEvent(readBuffer.length, tmp)); |
| |
| // Read beyond EOF |
| readInt = ras.read(); |
| assertEquals(-1, readInt, "wrong read after EOF"); |
| expectedEvents.add(IOEvent.createFileReadEvent(-1, tmp)); |
| |
| // Seek to beginning and verify we can read after EOF. |
| ras.seek(0); |
| readInt = ras.read(); |
| assertEquals(readInt, writeInt, "wrong int read after seek(0)"); |
| expectedEvents.add(IOEvent.createFileReadEvent(1, tmp)); |
| |
| // seek beyond EOF and verify we get EOF when reading. |
| ras.seek(10); |
| readInt = ras.read(); |
| assertEquals(-1, readInt, "wrong read after seek beyond EOF"); |
| expectedEvents.add(IOEvent.createFileReadEvent(-1, tmp)); |
| |
| // Read partial buffer. |
| int partialSize = writeBuffer.length - 2; |
| ras.seek(ras.length()-partialSize); |
| size = ras.read(readBuffer); |
| assertEquals(size, partialSize, "Wrong size partial buffer read"); |
| expectedEvents.add(IOEvent.createFileReadEvent(size, tmp)); |
| |
| ras.close(); |
| recording.stop(); |
| List<RecordedEvent> events = Events.fromRecording(recording); |
| IOHelper.verifyEqualsInOrder(events, expectedEvents); |
| } |
| |
| private static void verifyBufferEquals(byte[] a, byte[] b) { |
| assertEquals(a.length, b.length, "Wrong buffer size"); |
| for (int i = 0; i < a.length; ++i) { |
| assertEquals(a[i], b[i], "Wrong buffer content at pos " + i); |
| } |
| } |
| } |