126 lines
4.1 KiB
Java
126 lines
4.1 KiB
Java
/*
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* Copyright (c) 2016, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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/* @test
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* @bug 8171377
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* @summary Basic test for Unsafe::invokeCleaner
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* @modules jdk.unsupported
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* @run testng/othervm InvokeCleaner
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*/
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import java.io.Closeable;
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import java.lang.reflect.Field;
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import java.nio.ByteBuffer;
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import java.nio.MappedByteBuffer;
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import java.nio.channels.FileChannel;
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import java.nio.file.Files;
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import java.nio.file.Path;
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import java.nio.file.Paths;
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import java.util.ArrayList;
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import java.util.List;
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import sun.misc.Unsafe;
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import org.testng.annotations.AfterClass;
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import org.testng.annotations.BeforeClass;
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import org.testng.annotations.Test;
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import org.testng.annotations.DataProvider;
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public class InvokeCleaner {
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static Unsafe UNSAFE;
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static Path bob = Paths.get("bob");
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static List<Closeable> closeables = new ArrayList<>();
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@BeforeClass
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static void init() throws Exception {
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UNSAFE = getUnsafe();
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byte[] srcData = new byte[20];
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for (int i=0; i<20; i++)
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srcData[i] = (byte)i;
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Files.write(bob, srcData);
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}
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@DataProvider(name = "badBuffers")
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static Object[][] createBadBuffers() throws Exception {
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FileChannel fc = FileChannel.open(bob);
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closeables.add(fc);
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MappedByteBuffer mbb = fc.map(FileChannel.MapMode.READ_ONLY, 0, 10);
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return new Object[][] {
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{ ByteBuffer.allocate(0) },
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{ ByteBuffer.allocate(10) },
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{ ByteBuffer.allocate(10).duplicate() },
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{ ByteBuffer.allocate(10).slice() },
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{ ByteBuffer.allocateDirect(10).duplicate() },
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{ ByteBuffer.allocateDirect(10).slice() },
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{ ByteBuffer.allocateDirect(0).duplicate() },
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{ ByteBuffer.allocateDirect(0).slice() },
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{ mbb.duplicate() },
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{ mbb.slice() }
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};
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}
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@Test(dataProvider="badBuffers",
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expectedExceptions = IllegalArgumentException.class)
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public void badBuffers(ByteBuffer buffer) throws Exception {
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UNSAFE.invokeCleaner(buffer);
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}
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@DataProvider(name = "goodBuffers")
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static Object[][] createGoodBuffers() throws Exception {
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FileChannel fc = FileChannel.open(bob);
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closeables.add(fc);
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MappedByteBuffer mbb = fc.map(FileChannel.MapMode.READ_ONLY, 0, 10);
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mbb.load();
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return new Object[][] {
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{ ByteBuffer.allocateDirect(0) },
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{ ByteBuffer.allocateDirect(10) },
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{ mbb },
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{ fc.map(FileChannel.MapMode.READ_ONLY, 1, 11) }
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};
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}
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@Test(dataProvider="goodBuffers")
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public void goodBuffers(ByteBuffer buffer) throws Exception {
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UNSAFE.invokeCleaner(buffer);
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}
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@Test(expectedExceptions = NullPointerException.class)
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public void npe() throws Exception {
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UNSAFE.invokeCleaner(null);
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}
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static Unsafe getUnsafe() throws ReflectiveOperationException {
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Field f = Unsafe.class.getDeclaredField("theUnsafe");
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f.setAccessible(true);
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return (Unsafe)f.get(null);
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}
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@AfterClass
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public void cleanup() throws Exception {
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for(Closeable fc : closeables)
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fc.close();
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}
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}
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