| /* |
| * Copyright (c) 2015, 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. |
| * |
| * 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 org.graalvm.compiler.core.test; |
| |
| import static java.nio.file.StandardOpenOption.READ; |
| import static java.nio.file.StandardOpenOption.WRITE; |
| |
| import java.io.File; |
| import java.io.IOException; |
| import java.nio.ByteBuffer; |
| import java.nio.MappedByteBuffer; |
| import java.nio.channels.FileChannel; |
| import java.nio.channels.FileChannel.MapMode; |
| import java.nio.file.Files; |
| import java.nio.file.Path; |
| |
| import org.graalvm.compiler.nodes.StructuredGraph; |
| import org.graalvm.compiler.phases.common.CanonicalizerPhase; |
| import org.graalvm.compiler.phases.common.inlining.InliningPhase; |
| import org.graalvm.compiler.phases.common.inlining.policy.InlineEverythingPolicy; |
| import org.graalvm.compiler.phases.tiers.HighTierContext; |
| import org.junit.Assert; |
| import org.junit.Assume; |
| import org.junit.Test; |
| |
| import jdk.vm.ci.code.InstalledCode; |
| import jdk.vm.ci.code.InvalidInstalledCodeException; |
| import jdk.vm.ci.meta.ResolvedJavaMethod; |
| import jdk.vm.ci.meta.ResolvedJavaType; |
| import sun.misc.Unsafe; |
| |
| public class MarkUnsafeAccessTest extends GraalCompilerTest { |
| |
| public static Unsafe unsafe; |
| |
| public void getRaw() { |
| unsafe.getInt(0L); |
| } |
| |
| public void get() { |
| unsafe.getInt(null, 0L); |
| } |
| |
| public void putRaw() { |
| unsafe.putInt(0L, 0); |
| } |
| |
| public void put() { |
| unsafe.putInt(null, 0L, 0); |
| } |
| |
| public void cas() { |
| unsafe.compareAndSwapInt(null, 0, 0, 0); |
| } |
| |
| public void noAccess() { |
| unsafe.addressSize(); |
| unsafe.pageSize(); |
| } |
| |
| private void assertHasUnsafe(String name, boolean hasUnsafe) { |
| Assert.assertEquals(hasUnsafe, compile(getResolvedJavaMethod(name), null).hasUnsafeAccess()); |
| } |
| |
| @Test |
| public void testGet() { |
| assertHasUnsafe("get", true); |
| assertHasUnsafe("getRaw", true); |
| } |
| |
| @Test |
| public void testPut() { |
| assertHasUnsafe("put", true); |
| assertHasUnsafe("putRaw", true); |
| } |
| |
| @Test |
| public void testCas() { |
| assertHasUnsafe("cas", true); |
| } |
| |
| @Test |
| public void testNoAcces() { |
| assertHasUnsafe("noAccess", false); |
| } |
| |
| @FunctionalInterface |
| private interface MappedByteBufferGetter { |
| byte get(MappedByteBuffer mbb); |
| } |
| |
| @Test |
| public void testStandard() throws IOException { |
| testMappedByteBuffer(MappedByteBuffer::get); |
| } |
| |
| @Test |
| public void testCompiled() throws IOException { |
| Assume.assumeFalse("Crashes on AArch64 (GR-8351)", System.getProperty("os.arch").equalsIgnoreCase("aarch64")); |
| ResolvedJavaMethod getMethod = asResolvedJavaMethod(getMethod(ByteBuffer.class, "get", new Class<?>[]{})); |
| ResolvedJavaType mbbClass = getMetaAccess().lookupJavaType(MappedByteBuffer.class); |
| ResolvedJavaMethod getMethodImpl = mbbClass.findUniqueConcreteMethod(getMethod).getResult(); |
| Assert.assertNotNull(getMethodImpl); |
| StructuredGraph graph = parseForCompile(getMethodImpl); |
| HighTierContext highContext = getDefaultHighTierContext(); |
| new CanonicalizerPhase().apply(graph, highContext); |
| new InliningPhase(new InlineEverythingPolicy(), new CanonicalizerPhase()).apply(graph, highContext); |
| InstalledCode compiledCode = getCode(getMethodImpl, graph); |
| testMappedByteBuffer(mbb -> { |
| try { |
| return (byte) compiledCode.executeVarargs(mbb); |
| } catch (InvalidInstalledCodeException e) { |
| Assert.fail(); |
| return 0; |
| } |
| }); |
| } |
| |
| private static final int BLOCK_SIZE = 512; |
| private static final int BLOCK_COUNT = 16; |
| |
| public void testMappedByteBuffer(MappedByteBufferGetter getter) throws IOException { |
| Path tmp = Files.createTempFile(null, null); |
| tmp.toFile().deleteOnExit(); |
| FileChannel tmpFileChannel = FileChannel.open(tmp, READ, WRITE); |
| ByteBuffer bb = ByteBuffer.allocate(BLOCK_SIZE); |
| while (bb.remaining() >= 4) { |
| bb.putInt(0xA8A8A8A8); |
| } |
| for (int i = 0; i < BLOCK_COUNT; ++i) { |
| bb.flip(); |
| while (bb.hasRemaining()) { |
| tmpFileChannel.write(bb); |
| } |
| } |
| tmpFileChannel.force(true); |
| MappedByteBuffer mbb = tmpFileChannel.map(MapMode.READ_WRITE, 0, BLOCK_SIZE * BLOCK_COUNT); |
| Assert.assertEquals((byte) 0xA8, mbb.get()); |
| mbb.position(mbb.position() + BLOCK_SIZE); |
| Assert.assertEquals((byte) 0xA8, mbb.get()); |
| boolean truncated = false; |
| try { |
| tmpFileChannel.truncate(0); |
| tmpFileChannel.force(true); |
| truncated = true; |
| } catch (IOException e) { |
| // not all platforms support truncating memory-mapped files |
| } |
| Assume.assumeTrue(truncated); |
| try { |
| mbb.position(BLOCK_SIZE); |
| getter.get(mbb); |
| |
| // Make a call that goes into native code to materialize async exception |
| new File("").exists(); |
| } catch (InternalError e) { |
| return; |
| } |
| Assert.fail("Expected exception"); |
| } |
| } |