| /* |
| * Copyright (c) 2016, 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. |
| * |
| * 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. |
| */ |
| |
| /* @test |
| * @bug 8171377 |
| * @summary Basic test for Unsafe::invokeCleaner |
| * @modules jdk.unsupported |
| * @run testng/othervm InvokeCleaner |
| */ |
| |
| import java.io.Closeable; |
| import java.lang.reflect.Field; |
| import java.nio.ByteBuffer; |
| import java.nio.MappedByteBuffer; |
| import java.nio.channels.FileChannel; |
| import java.nio.file.Files; |
| import java.nio.file.Path; |
| import java.nio.file.Paths; |
| import java.util.ArrayList; |
| import java.util.List; |
| import sun.misc.Unsafe; |
| import org.testng.annotations.AfterClass; |
| import org.testng.annotations.BeforeClass; |
| import org.testng.annotations.Test; |
| import org.testng.annotations.DataProvider; |
| |
| public class InvokeCleaner { |
| |
| static Unsafe UNSAFE; |
| static Path bob = Paths.get("bob"); |
| static List<Closeable> closeables = new ArrayList<>(); |
| |
| @BeforeClass |
| static void init() throws Exception { |
| UNSAFE = getUnsafe(); |
| |
| byte[] srcData = new byte[20]; |
| for (int i=0; i<20; i++) |
| srcData[i] = (byte)i; |
| Files.write(bob, srcData); |
| } |
| |
| @DataProvider(name = "badBuffers") |
| static Object[][] createBadBuffers() throws Exception { |
| FileChannel fc = FileChannel.open(bob); |
| closeables.add(fc); |
| MappedByteBuffer mbb = fc.map(FileChannel.MapMode.READ_ONLY, 0, 10); |
| |
| return new Object[][] { |
| { ByteBuffer.allocate(0) }, |
| { ByteBuffer.allocate(10) }, |
| { ByteBuffer.allocate(10).duplicate() }, |
| { ByteBuffer.allocate(10).slice() }, |
| { ByteBuffer.allocateDirect(10).duplicate() }, |
| { ByteBuffer.allocateDirect(10).slice() }, |
| { ByteBuffer.allocateDirect(0).duplicate() }, |
| { ByteBuffer.allocateDirect(0).slice() }, |
| { mbb.duplicate() }, |
| { mbb.slice() } |
| }; |
| } |
| |
| @Test(dataProvider="badBuffers", |
| expectedExceptions = IllegalArgumentException.class) |
| public void badBuffers(ByteBuffer buffer) throws Exception { |
| UNSAFE.invokeCleaner(buffer); |
| } |
| |
| @DataProvider(name = "goodBuffers") |
| static Object[][] createGoodBuffers() throws Exception { |
| FileChannel fc = FileChannel.open(bob); |
| closeables.add(fc); |
| MappedByteBuffer mbb = fc.map(FileChannel.MapMode.READ_ONLY, 0, 10); |
| mbb.load(); |
| |
| return new Object[][] { |
| { ByteBuffer.allocateDirect(0) }, |
| { ByteBuffer.allocateDirect(10) }, |
| { mbb }, |
| { fc.map(FileChannel.MapMode.READ_ONLY, 1, 11) } |
| }; |
| } |
| |
| @Test(dataProvider="goodBuffers") |
| public void goodBuffers(ByteBuffer buffer) throws Exception { |
| UNSAFE.invokeCleaner(buffer); |
| } |
| |
| @Test(expectedExceptions = NullPointerException.class) |
| public void npe() throws Exception { |
| UNSAFE.invokeCleaner(null); |
| } |
| |
| static Unsafe getUnsafe() throws ReflectiveOperationException { |
| Field f = Unsafe.class.getDeclaredField("theUnsafe"); |
| f.setAccessible(true); |
| return (Unsafe)f.get(null); |
| } |
| |
| @AfterClass |
| public void cleanup() throws Exception { |
| for(Closeable fc : closeables) |
| fc.close(); |
| } |
| } |