--- /dev/null	2018-06-17 23:18:20.806999507 +0800
+++ new/test/jdk/jfr/event/io/TestRandomAccessFileEvents.java	2019-01-29 11:03:58.789993948 +0800
@@ -0,0 +1,116 @@
+/*
+ * Copyright (c) 2018, 2019, 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.testlibrary.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.testlibrary.jfr.Events;
+import jdk.testlibrary.jfr.IOEvent;
+import jdk.testlibrary.jfr.IOHelper;
+/*
+ * @test
+ * @key jfr
+ * @library /lib/testlibrary
+ * @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);
+        }
+    }
+}