682 lines
30 KiB
Java
682 lines
30 KiB
Java
/*
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* Copyright (c) 2019, 2020, 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. Oracle designates this
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* particular file as subject to the "Classpath" exception as provided
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* by Oracle in the LICENSE file that accompanied this code.
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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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/*
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* @test
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* @modules java.base/sun.nio.ch
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* jdk.incubator.foreign/jdk.internal.foreign
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* @run testng TestByteBuffer
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*/
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import jdk.incubator.foreign.MappedMemorySegment;
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import jdk.incubator.foreign.MemoryLayouts;
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import jdk.incubator.foreign.MemoryLayout;
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import jdk.incubator.foreign.MemoryAddress;
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import jdk.incubator.foreign.MemorySegment;
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import jdk.incubator.foreign.MemoryLayout.PathElement;
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import jdk.incubator.foreign.SequenceLayout;
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import java.io.File;
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import java.io.IOException;
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import java.lang.invoke.MethodHandle;
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import java.lang.invoke.MethodHandles;
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import java.lang.invoke.VarHandle;
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import java.lang.ref.WeakReference;
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import java.lang.reflect.InvocationTargetException;
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import java.lang.reflect.Method;
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import java.lang.reflect.Modifier;
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import java.nio.Buffer;
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import java.nio.ByteBuffer;
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import java.nio.ByteOrder;
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import java.nio.CharBuffer;
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import java.nio.DoubleBuffer;
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import java.nio.FloatBuffer;
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import java.nio.IntBuffer;
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import java.nio.LongBuffer;
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import java.nio.MappedByteBuffer;
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import java.nio.ShortBuffer;
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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.StandardOpenOption;
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import java.util.HashMap;
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import java.util.Map;
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import java.util.function.BiConsumer;
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import java.util.function.BiFunction;
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import java.util.function.Consumer;
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import java.util.function.Function;
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import java.util.function.Predicate;
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import java.util.stream.Stream;
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import jdk.internal.foreign.HeapMemorySegmentImpl;
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import jdk.internal.foreign.MappedMemorySegmentImpl;
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import jdk.internal.foreign.MemoryAddressImpl;
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import jdk.internal.foreign.NativeMemorySegmentImpl;
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import org.testng.SkipException;
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import org.testng.annotations.*;
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import sun.nio.ch.DirectBuffer;
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import static jdk.incubator.foreign.MemorySegment.*;
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import static org.testng.Assert.*;
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public class TestByteBuffer {
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static Path tempPath;
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static {
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try {
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File file = File.createTempFile("buffer", "txt");
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file.deleteOnExit();
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tempPath = file.toPath();
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Files.write(file.toPath(), new byte[256], StandardOpenOption.WRITE);
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} catch (IOException ex) {
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throw new ExceptionInInitializerError(ex);
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}
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}
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static SequenceLayout tuples = MemoryLayout.ofSequence(500,
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MemoryLayout.ofStruct(
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MemoryLayouts.BITS_32_BE.withName("index"),
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MemoryLayouts.BITS_32_BE.withName("value")
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));
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static SequenceLayout bytes = MemoryLayout.ofSequence(100,
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MemoryLayouts.BITS_8_BE
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);
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static SequenceLayout chars = MemoryLayout.ofSequence(100,
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MemoryLayouts.BITS_16_BE
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);
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static SequenceLayout shorts = MemoryLayout.ofSequence(100,
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MemoryLayouts.BITS_16_BE
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);
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static SequenceLayout ints = MemoryLayout.ofSequence(100,
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MemoryLayouts.BITS_32_BE
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);
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static SequenceLayout floats = MemoryLayout.ofSequence(100,
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MemoryLayouts.BITS_32_BE
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);
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static SequenceLayout longs = MemoryLayout.ofSequence(100,
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MemoryLayouts.BITS_64_BE
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);
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static SequenceLayout doubles = MemoryLayout.ofSequence(100,
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MemoryLayouts.BITS_64_BE
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);
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static VarHandle indexHandle = tuples.varHandle(int.class, PathElement.sequenceElement(), PathElement.groupElement("index"));
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static VarHandle valueHandle = tuples.varHandle(float.class, PathElement.sequenceElement(), PathElement.groupElement("value"));
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static VarHandle byteHandle = bytes.varHandle(byte.class, PathElement.sequenceElement());
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static VarHandle charHandle = chars.varHandle(char.class, PathElement.sequenceElement());
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static VarHandle shortHandle = shorts.varHandle(short.class, PathElement.sequenceElement());
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static VarHandle intHandle = ints.varHandle(int.class, PathElement.sequenceElement());
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static VarHandle floatHandle = floats.varHandle(float.class, PathElement.sequenceElement());
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static VarHandle longHandle = longs.varHandle(long.class, PathElement.sequenceElement());
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static VarHandle doubleHandle = doubles.varHandle(double.class, PathElement.sequenceElement());
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static void initTuples(MemoryAddress base) {
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for (long i = 0; i < tuples.elementCount().getAsLong() ; i++) {
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indexHandle.set(base, i, (int)i);
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valueHandle.set(base, i, (float)(i / 500f));
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}
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}
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static void checkTuples(MemoryAddress base, ByteBuffer bb) {
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for (long i = 0; i < tuples.elementCount().getAsLong() ; i++) {
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assertEquals(bb.getInt(), (int)indexHandle.get(base, i));
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assertEquals(bb.getFloat(), (float)valueHandle.get(base, i));
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}
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}
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static void initBytes(MemoryAddress base, SequenceLayout seq, BiConsumer<MemoryAddress, Long> handleSetter) {
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for (long i = 0; i < seq.elementCount().getAsLong() ; i++) {
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handleSetter.accept(base, i);
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}
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}
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static <Z extends Buffer> void checkBytes(MemoryAddress base, SequenceLayout layout,
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Function<ByteBuffer, Z> bufFactory,
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BiFunction<MemoryAddress, Long, Object> handleExtractor,
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Function<Z, Object> bufferExtractor) {
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long nelems = layout.elementCount().getAsLong();
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long elemSize = layout.elementLayout().byteSize();
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for (long i = 0 ; i < nelems ; i++) {
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long limit = nelems - i;
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MemorySegment resizedSegment = base.segment().asSlice(i * elemSize, limit * elemSize);
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ByteBuffer bb = resizedSegment.asByteBuffer();
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Z z = bufFactory.apply(bb);
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for (long j = i ; j < limit ; j++) {
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Object handleValue = handleExtractor.apply(resizedSegment.baseAddress(), j - i);
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Object bufferValue = bufferExtractor.apply(z);
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if (handleValue instanceof Number) {
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assertEquals(((Number)handleValue).longValue(), j);
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assertEquals(((Number)bufferValue).longValue(), j);
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} else {
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assertEquals((long)(char)handleValue, j);
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assertEquals((long)(char)bufferValue, j);
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}
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}
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}
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}
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@Test
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public void testOffheap() {
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try (MemorySegment segment = MemorySegment.allocateNative(tuples)) {
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MemoryAddress base = segment.baseAddress();
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initTuples(base);
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ByteBuffer bb = segment.asByteBuffer();
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checkTuples(base, bb);
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}
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}
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@Test
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public void testHeap() {
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byte[] arr = new byte[(int) tuples.byteSize()];
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MemorySegment region = MemorySegment.ofArray(arr);
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MemoryAddress base = region.baseAddress();
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initTuples(base);
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ByteBuffer bb = region.asByteBuffer();
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checkTuples(base, bb);
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}
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@Test
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public void testChannel() throws Throwable {
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File f = new File("test.out");
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assertTrue(f.createNewFile());
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f.deleteOnExit();
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//write to channel
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try (FileChannel channel = FileChannel.open(f.toPath(), StandardOpenOption.READ, StandardOpenOption.WRITE)) {
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withMappedBuffer(channel, FileChannel.MapMode.READ_WRITE, 0, tuples.byteSize(), mbb -> {
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MemorySegment segment = MemorySegment.ofByteBuffer(mbb);
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MemoryAddress base = segment.baseAddress();
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initTuples(base);
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mbb.force();
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});
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}
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//read from channel
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try (FileChannel channel = FileChannel.open(f.toPath(), StandardOpenOption.READ)) {
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withMappedBuffer(channel, FileChannel.MapMode.READ_ONLY, 0, tuples.byteSize(), mbb -> {
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MemorySegment segment = MemorySegment.ofByteBuffer(mbb);
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MemoryAddress base = segment.baseAddress();
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checkTuples(base, mbb);
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});
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}
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}
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static final int ALL_ACCESS_MODES = READ | WRITE | CLOSE | ACQUIRE | HANDOFF;
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@Test
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public void testDefaultAccessModesMappedSegment() throws Throwable {
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try (MappedMemorySegment segment = MemorySegment.mapFromPath(tempPath, 8, FileChannel.MapMode.READ_WRITE)) {
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assertTrue(segment.hasAccessModes(ALL_ACCESS_MODES));
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assertEquals(segment.accessModes(), ALL_ACCESS_MODES);
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}
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try (MappedMemorySegment segment = MemorySegment.mapFromPath(tempPath, 8, FileChannel.MapMode.READ_ONLY)) {
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assertTrue(segment.hasAccessModes(ALL_ACCESS_MODES & ~WRITE));
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assertEquals(segment.accessModes(), ALL_ACCESS_MODES& ~WRITE);
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}
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}
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@Test
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public void testMappedSegment() throws Throwable {
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File f = new File("test2.out");
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f.createNewFile();
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f.deleteOnExit();
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//write to channel
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try (MappedMemorySegment segment = MemorySegment.mapFromPath(f.toPath(), tuples.byteSize(), FileChannel.MapMode.READ_WRITE)) {
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MemoryAddress base = segment.baseAddress();
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initTuples(base);
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segment.force();
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}
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//read from channel
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try (MemorySegment segment = MemorySegment.mapFromPath(f.toPath(), tuples.byteSize(), FileChannel.MapMode.READ_ONLY)) {
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MemoryAddress base = segment.baseAddress();
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checkTuples(base, segment.asByteBuffer());
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}
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}
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static void withMappedBuffer(FileChannel channel, FileChannel.MapMode mode, long pos, long size, Consumer<MappedByteBuffer> action) throws Throwable {
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MappedByteBuffer mbb = channel.map(mode, pos, size);
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var ref = new WeakReference<>(mbb);
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action.accept(mbb);
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mbb = null;
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//wait for it to be GCed
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System.gc();
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while (ref.get() != null) {
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Thread.sleep(20);
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}
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}
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static void checkByteArrayAlignment(MemoryLayout layout) {
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if (layout.bitSize() > 32
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&& System.getProperty("sun.arch.data.model").equals("32")) {
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throw new SkipException("avoid unaligned access on 32-bit system");
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}
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}
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@Test(dataProvider = "bufferOps")
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public void testScopedBuffer(Function<ByteBuffer, Buffer> bufferFactory, Map<Method, Object[]> members) {
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Buffer bb;
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try (MemorySegment segment = MemorySegment.allocateNative(bytes)) {
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MemoryAddress base = segment.baseAddress();
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bb = bufferFactory.apply(segment.asByteBuffer());
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}
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//outside of scope!!
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for (Map.Entry<Method, Object[]> e : members.entrySet()) {
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if (!e.getKey().getName().contains("get") &&
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!e.getKey().getName().contains("put")) {
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//skip
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return;
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}
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try {
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e.getKey().invoke(bb, e.getValue());
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assertTrue(false);
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} catch (InvocationTargetException ex) {
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Throwable cause = ex.getCause();
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if (cause instanceof IllegalStateException) {
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//all get/set buffer operation should fail because of the scope check
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assertTrue(ex.getCause().getMessage().contains("already closed"));
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} else {
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//all other exceptions were unexpected - fail
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assertTrue(false);
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}
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} catch (Throwable ex) {
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//unexpected exception - fail
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assertTrue(false);
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}
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}
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}
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@Test(dataProvider = "bufferHandleOps")
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public void testScopedBufferAndVarHandle(VarHandle bufferHandle) {
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ByteBuffer bb;
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try (MemorySegment segment = MemorySegment.allocateNative(bytes)) {
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bb = segment.asByteBuffer();
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for (Map.Entry<MethodHandle, Object[]> e : varHandleMembers(bb, bufferHandle).entrySet()) {
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MethodHandle handle = e.getKey().bindTo(bufferHandle)
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.asSpreader(Object[].class, e.getValue().length);
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try {
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handle.invoke(e.getValue());
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} catch (UnsupportedOperationException ex) {
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//skip
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} catch (Throwable ex) {
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//should not fail - segment is alive!
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fail();
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}
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}
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}
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for (Map.Entry<MethodHandle, Object[]> e : varHandleMembers(bb, bufferHandle).entrySet()) {
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try {
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MethodHandle handle = e.getKey().bindTo(bufferHandle)
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.asSpreader(Object[].class, e.getValue().length);
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handle.invoke(e.getValue());
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fail();
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} catch (IllegalStateException ex) {
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assertTrue(ex.getMessage().contains("already closed"));
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} catch (UnsupportedOperationException ex) {
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//skip
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} catch (Throwable ex) {
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fail();
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}
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}
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}
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@Test(dataProvider = "bufferOps")
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public void testDirectBuffer(Function<ByteBuffer, Buffer> bufferFactory, Map<Method, Object[]> members) {
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try (MemorySegment segment = MemorySegment.allocateNative(bytes)) {
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MemoryAddress base = segment.baseAddress();
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Buffer bb = bufferFactory.apply(segment.asByteBuffer());
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assertTrue(bb.isDirect());
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DirectBuffer directBuffer = ((DirectBuffer)bb);
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assertEquals(directBuffer.address(), ((MemoryAddressImpl)base).unsafeGetOffset());
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assertTrue((directBuffer.attachment() == null) == (bb instanceof ByteBuffer));
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assertTrue(directBuffer.cleaner() == null);
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}
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}
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@Test(dataProvider="resizeOps")
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public void testResizeOffheap(Consumer<MemoryAddress> checker, Consumer<MemoryAddress> initializer, SequenceLayout seq) {
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try (MemorySegment segment = MemorySegment.allocateNative(seq)) {
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MemoryAddress base = segment.baseAddress();
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initializer.accept(base);
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checker.accept(base);
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}
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}
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@Test(dataProvider="resizeOps")
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public void testResizeHeap(Consumer<MemoryAddress> checker, Consumer<MemoryAddress> initializer, SequenceLayout seq) {
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checkByteArrayAlignment(seq.elementLayout());
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int capacity = (int)seq.byteSize();
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MemoryAddress base = MemorySegment.ofArray(new byte[capacity]).baseAddress();
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initializer.accept(base);
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checker.accept(base);
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}
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@Test(dataProvider="resizeOps")
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public void testResizeBuffer(Consumer<MemoryAddress> checker, Consumer<MemoryAddress> initializer, SequenceLayout seq) {
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checkByteArrayAlignment(seq.elementLayout());
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int capacity = (int)seq.byteSize();
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MemoryAddress base = MemorySegment.ofByteBuffer(ByteBuffer.wrap(new byte[capacity])).baseAddress();
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initializer.accept(base);
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checker.accept(base);
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}
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@Test(dataProvider="resizeOps")
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public void testResizeRoundtripHeap(Consumer<MemoryAddress> checker, Consumer<MemoryAddress> initializer, SequenceLayout seq) {
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checkByteArrayAlignment(seq.elementLayout());
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int capacity = (int)seq.byteSize();
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byte[] arr = new byte[capacity];
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MemorySegment segment = MemorySegment.ofArray(arr);
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MemoryAddress first = segment.baseAddress();
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initializer.accept(first);
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MemoryAddress second = MemorySegment.ofByteBuffer(segment.asByteBuffer()).baseAddress();
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checker.accept(second);
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}
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@Test(dataProvider="resizeOps")
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public void testResizeRoundtripNative(Consumer<MemoryAddress> checker, Consumer<MemoryAddress> initializer, SequenceLayout seq) {
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try (MemorySegment segment = MemorySegment.allocateNative(seq)) {
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MemoryAddress first = segment.baseAddress();
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initializer.accept(first);
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MemoryAddress second = MemorySegment.ofByteBuffer(segment.asByteBuffer()).baseAddress();
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checker.accept(second);
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}
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}
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@Test(expectedExceptions = IllegalStateException.class)
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public void testBufferOnClosedScope() {
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MemorySegment leaked;
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try (MemorySegment segment = MemorySegment.allocateNative(bytes)) {
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leaked = segment;
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}
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ByteBuffer byteBuffer = leaked.asByteBuffer(); // ok
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byteBuffer.get(); // should throw
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}
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@Test(expectedExceptions = { UnsupportedOperationException.class,
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IllegalArgumentException.class })
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public void testTooBigForByteBuffer() {
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try (MemorySegment segment = MemorySegment.allocateNative((long)Integer.MAX_VALUE + 10L)) {
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segment.asByteBuffer();
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}
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}
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@Test(dataProvider="resizeOps")
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public void testCopyHeapToNative(Consumer<MemoryAddress> checker, Consumer<MemoryAddress> initializer, SequenceLayout seq) {
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checkByteArrayAlignment(seq.elementLayout());
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int bytes = (int)seq.byteSize();
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try (MemorySegment nativeArray = MemorySegment.allocateNative(bytes);
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MemorySegment heapArray = MemorySegment.ofArray(new byte[bytes])) {
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initializer.accept(heapArray.baseAddress());
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MemoryAddress.copy(heapArray.baseAddress(), nativeArray.baseAddress(), bytes);
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checker.accept(nativeArray.baseAddress());
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}
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}
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@Test(dataProvider="resizeOps")
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public void testCopyNativeToHeap(Consumer<MemoryAddress> checker, Consumer<MemoryAddress> initializer, SequenceLayout seq) {
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checkByteArrayAlignment(seq.elementLayout());
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int bytes = (int)seq.byteSize();
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try (MemorySegment nativeArray = MemorySegment.allocateNative(seq);
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MemorySegment heapArray = MemorySegment.ofArray(new byte[bytes])) {
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initializer.accept(nativeArray.baseAddress());
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MemoryAddress.copy(nativeArray.baseAddress(), heapArray.baseAddress(), bytes);
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checker.accept(heapArray.baseAddress());
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}
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}
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@Test
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public void testDefaultAccessModesOfBuffer() {
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ByteBuffer rwBuffer = ByteBuffer.wrap(new byte[4]);
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try (MemorySegment segment = MemorySegment.ofByteBuffer(rwBuffer)) {
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assertTrue(segment.hasAccessModes(ALL_ACCESS_MODES));
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assertEquals(segment.accessModes(), ALL_ACCESS_MODES);
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}
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ByteBuffer roBuffer = rwBuffer.asReadOnlyBuffer();
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try (MemorySegment segment = MemorySegment.ofByteBuffer(roBuffer)) {
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assertTrue(segment.hasAccessModes(ALL_ACCESS_MODES & ~WRITE));
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assertEquals(segment.accessModes(), ALL_ACCESS_MODES & ~WRITE);
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}
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}
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@Test(dataProvider="bufferSources")
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public void testBufferToSegment(ByteBuffer bb, Predicate<MemorySegment> segmentChecker) {
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MemorySegment segment = MemorySegment.ofByteBuffer(bb);
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assertEquals(segment.hasAccessModes(MemorySegment.WRITE), !bb.isReadOnly());
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assertTrue(segmentChecker.test(segment));
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assertTrue(segmentChecker.test(segment.asSlice(0, segment.byteSize())));
|
|
assertTrue(segmentChecker.test(segment.withAccessModes(MemorySegment.READ)));
|
|
assertEquals(bb.capacity(), segment.byteSize());
|
|
//another round trip
|
|
segment = MemorySegment.ofByteBuffer(segment.asByteBuffer());
|
|
assertEquals(segment.hasAccessModes(MemorySegment.WRITE), !bb.isReadOnly());
|
|
assertTrue(segmentChecker.test(segment));
|
|
assertTrue(segmentChecker.test(segment.asSlice(0, segment.byteSize())));
|
|
assertTrue(segmentChecker.test(segment.withAccessModes(MemorySegment.READ)));
|
|
assertEquals(bb.capacity(), segment.byteSize());
|
|
}
|
|
|
|
@Test
|
|
public void testRoundTripAccess() {
|
|
try(MemorySegment ms = MemorySegment.allocateNative(4)) {
|
|
MemorySegment msNoAccess = ms.withAccessModes(MemorySegment.READ); // READ is required to make BB
|
|
MemorySegment msRoundTrip = MemorySegment.ofByteBuffer(msNoAccess.asByteBuffer());
|
|
assertEquals(msNoAccess.accessModes(), msRoundTrip.accessModes());
|
|
}
|
|
}
|
|
|
|
@Test(expectedExceptions = IllegalStateException.class)
|
|
public void testDeadAccessOnClosedBufferSegment() {
|
|
MemorySegment s1 = MemorySegment.allocateNative(MemoryLayouts.JAVA_INT);
|
|
MemorySegment s2 = MemorySegment.ofByteBuffer(s1.asByteBuffer());
|
|
|
|
s1.close(); // memory freed
|
|
|
|
intHandle.set(s2.baseAddress(), 0L, 10); // Dead access!
|
|
}
|
|
|
|
@DataProvider(name = "bufferOps")
|
|
public static Object[][] bufferOps() throws Throwable {
|
|
return new Object[][]{
|
|
{ (Function<ByteBuffer, Buffer>) bb -> bb, bufferMembers(ByteBuffer.class)},
|
|
{ (Function<ByteBuffer, Buffer>) ByteBuffer::asCharBuffer, bufferMembers(CharBuffer.class)},
|
|
{ (Function<ByteBuffer, Buffer>) ByteBuffer::asShortBuffer, bufferMembers(ShortBuffer.class)},
|
|
{ (Function<ByteBuffer, Buffer>) ByteBuffer::asIntBuffer, bufferMembers(IntBuffer.class)},
|
|
{ (Function<ByteBuffer, Buffer>) ByteBuffer::asFloatBuffer, bufferMembers(FloatBuffer.class)},
|
|
{ (Function<ByteBuffer, Buffer>) ByteBuffer::asLongBuffer, bufferMembers(LongBuffer.class)},
|
|
{ (Function<ByteBuffer, Buffer>) ByteBuffer::asDoubleBuffer, bufferMembers(DoubleBuffer.class)},
|
|
};
|
|
}
|
|
|
|
static Map<Method, Object[]> bufferMembers(Class<?> bufferClass) {
|
|
Map<Method, Object[]> members = new HashMap<>();
|
|
for (Method m : bufferClass.getMethods()) {
|
|
//skip statics and method declared in j.l.Object
|
|
if (m.getDeclaringClass().equals(Object.class) ||
|
|
(m.getModifiers() & Modifier.STATIC) != 0) continue;
|
|
Object[] args = Stream.of(m.getParameterTypes())
|
|
.map(TestByteBuffer::defaultValue)
|
|
.toArray();
|
|
members.put(m, args);
|
|
}
|
|
return members;
|
|
}
|
|
|
|
@DataProvider(name = "bufferHandleOps")
|
|
public static Object[][] bufferHandleOps() throws Throwable {
|
|
return new Object[][]{
|
|
{ MethodHandles.byteBufferViewVarHandle(char[].class, ByteOrder.nativeOrder()) },
|
|
{ MethodHandles.byteBufferViewVarHandle(short[].class, ByteOrder.nativeOrder()) },
|
|
{ MethodHandles.byteBufferViewVarHandle(int[].class, ByteOrder.nativeOrder()) },
|
|
{ MethodHandles.byteBufferViewVarHandle(long[].class, ByteOrder.nativeOrder()) },
|
|
{ MethodHandles.byteBufferViewVarHandle(float[].class, ByteOrder.nativeOrder()) },
|
|
{ MethodHandles.byteBufferViewVarHandle(double[].class, ByteOrder.nativeOrder()) }
|
|
};
|
|
}
|
|
|
|
static Map<MethodHandle, Object[]> varHandleMembers(ByteBuffer bb, VarHandle handle) {
|
|
Map<MethodHandle, Object[]> members = new HashMap<>();
|
|
for (VarHandle.AccessMode mode : VarHandle.AccessMode.values()) {
|
|
Class<?>[] params = handle.accessModeType(mode).parameterArray();
|
|
Object[] args = Stream.concat(Stream.of(bb), Stream.of(params).skip(1)
|
|
.map(TestByteBuffer::defaultValue))
|
|
.toArray();
|
|
try {
|
|
members.put(MethodHandles.varHandleInvoker(mode, handle.accessModeType(mode)), args);
|
|
} catch (Throwable ex) {
|
|
throw new AssertionError(ex);
|
|
}
|
|
}
|
|
return members;
|
|
}
|
|
|
|
@DataProvider(name = "resizeOps")
|
|
public Object[][] resizeOps() {
|
|
Consumer<MemoryAddress> byteInitializer =
|
|
(base) -> initBytes(base, bytes, (addr, pos) -> byteHandle.set(addr, pos, (byte)(long)pos));
|
|
Consumer<MemoryAddress> charInitializer =
|
|
(base) -> initBytes(base, chars, (addr, pos) -> charHandle.set(addr, pos, (char)(long)pos));
|
|
Consumer<MemoryAddress> shortInitializer =
|
|
(base) -> initBytes(base, shorts, (addr, pos) -> shortHandle.set(addr, pos, (short)(long)pos));
|
|
Consumer<MemoryAddress> intInitializer =
|
|
(base) -> initBytes(base, ints, (addr, pos) -> intHandle.set(addr, pos, (int)(long)pos));
|
|
Consumer<MemoryAddress> floatInitializer =
|
|
(base) -> initBytes(base, floats, (addr, pos) -> floatHandle.set(addr, pos, (float)(long)pos));
|
|
Consumer<MemoryAddress> longInitializer =
|
|
(base) -> initBytes(base, longs, (addr, pos) -> longHandle.set(addr, pos, (long)pos));
|
|
Consumer<MemoryAddress> doubleInitializer =
|
|
(base) -> initBytes(base, doubles, (addr, pos) -> doubleHandle.set(addr, pos, (double)(long)pos));
|
|
|
|
Consumer<MemoryAddress> byteChecker =
|
|
(base) -> checkBytes(base, bytes, Function.identity(), byteHandle::get, ByteBuffer::get);
|
|
Consumer<MemoryAddress> charChecker =
|
|
(base) -> checkBytes(base, chars, ByteBuffer::asCharBuffer, charHandle::get, CharBuffer::get);
|
|
Consumer<MemoryAddress> shortChecker =
|
|
(base) -> checkBytes(base, shorts, ByteBuffer::asShortBuffer, shortHandle::get, ShortBuffer::get);
|
|
Consumer<MemoryAddress> intChecker =
|
|
(base) -> checkBytes(base, ints, ByteBuffer::asIntBuffer, intHandle::get, IntBuffer::get);
|
|
Consumer<MemoryAddress> floatChecker =
|
|
(base) -> checkBytes(base, floats, ByteBuffer::asFloatBuffer, floatHandle::get, FloatBuffer::get);
|
|
Consumer<MemoryAddress> longChecker =
|
|
(base) -> checkBytes(base, longs, ByteBuffer::asLongBuffer, longHandle::get, LongBuffer::get);
|
|
Consumer<MemoryAddress> doubleChecker =
|
|
(base) -> checkBytes(base, doubles, ByteBuffer::asDoubleBuffer, doubleHandle::get, DoubleBuffer::get);
|
|
|
|
return new Object[][]{
|
|
{byteChecker, byteInitializer, bytes},
|
|
{charChecker, charInitializer, chars},
|
|
{shortChecker, shortInitializer, shorts},
|
|
{intChecker, intInitializer, ints},
|
|
{floatChecker, floatInitializer, floats},
|
|
{longChecker, longInitializer, longs},
|
|
{doubleChecker, doubleInitializer, doubles}
|
|
};
|
|
}
|
|
|
|
static Object defaultValue(Class<?> c) {
|
|
if (c.isPrimitive()) {
|
|
if (c == char.class) {
|
|
return (char)0;
|
|
} else if (c == boolean.class) {
|
|
return false;
|
|
} else if (c == byte.class) {
|
|
return (byte)0;
|
|
} else if (c == short.class) {
|
|
return (short)0;
|
|
} else if (c == int.class) {
|
|
return 0;
|
|
} else if (c == long.class) {
|
|
return 0L;
|
|
} else if (c == float.class) {
|
|
return 0f;
|
|
} else if (c == double.class) {
|
|
return 0d;
|
|
} else {
|
|
throw new IllegalStateException();
|
|
}
|
|
} else if (c.isArray()) {
|
|
if (c == char[].class) {
|
|
return new char[1];
|
|
} else if (c == boolean[].class) {
|
|
return new boolean[1];
|
|
} else if (c == byte[].class) {
|
|
return new byte[1];
|
|
} else if (c == short[].class) {
|
|
return new short[1];
|
|
} else if (c == int[].class) {
|
|
return new int[1];
|
|
} else if (c == long[].class) {
|
|
return new long[1];
|
|
} else if (c == float[].class) {
|
|
return new float[1];
|
|
} else if (c == double[].class) {
|
|
return new double[1];
|
|
} else {
|
|
throw new IllegalStateException();
|
|
}
|
|
} else {
|
|
return null;
|
|
}
|
|
}
|
|
|
|
@DataProvider(name = "bufferSources")
|
|
public static Object[][] bufferSources() {
|
|
Predicate<MemorySegment> heapTest = segment -> segment instanceof HeapMemorySegmentImpl;
|
|
Predicate<MemorySegment> nativeTest = segment -> segment instanceof NativeMemorySegmentImpl;
|
|
Predicate<MemorySegment> mappedTest = segment -> segment instanceof MappedMemorySegmentImpl;
|
|
try (FileChannel channel = FileChannel.open(tempPath, StandardOpenOption.READ, StandardOpenOption.WRITE)) {
|
|
return new Object[][]{
|
|
{ ByteBuffer.wrap(new byte[256]), heapTest },
|
|
{ ByteBuffer.allocate(256), heapTest },
|
|
{ ByteBuffer.allocateDirect(256), nativeTest },
|
|
{ channel.map(FileChannel.MapMode.READ_WRITE, 0L, 256), mappedTest },
|
|
|
|
{ ByteBuffer.wrap(new byte[256]).asReadOnlyBuffer(), heapTest },
|
|
{ ByteBuffer.allocate(256).asReadOnlyBuffer(), heapTest },
|
|
{ ByteBuffer.allocateDirect(256).asReadOnlyBuffer(), nativeTest },
|
|
{ channel.map(FileChannel.MapMode.READ_WRITE, 0L, 256).asReadOnlyBuffer(),
|
|
nativeTest /* this seems to be an existing bug in the BB implementation */ }
|
|
};
|
|
} catch (IOException ex) {
|
|
throw new ExceptionInInitializerError(ex);
|
|
}
|
|
}
|
|
}
|