282 lines
13 KiB
Java
282 lines
13 KiB
Java
/*
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* Copyright (c) 2021, 2023, 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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/*
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* @test
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* @run testng/othervm --enable-native-access=ALL-UNNAMED TestMemoryAccessInstance
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* @run testng/othervm -Djava.lang.invoke.VarHandle.VAR_HANDLE_SEGMENT_FORCE_EXACT=true --enable-native-access=ALL-UNNAMED TestMemoryAccessInstance
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*/
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import java.lang.foreign.MemorySegment;
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import java.lang.foreign.Arena;
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import java.lang.foreign.ValueLayout;
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import java.nio.ByteBuffer;
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import java.nio.ByteOrder;
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import org.testng.annotations.*;
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import org.testng.SkipException;
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import static org.testng.Assert.*;
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public class TestMemoryAccessInstance {
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static class Accessor<X, L extends ValueLayout> {
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interface SegmentGetter<X, L> {
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X get(MemorySegment segment, L layout, long offset);
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}
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interface SegmentSetter<X, L> {
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void set(MemorySegment segment, L layout, long offset, X o);
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}
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interface BufferGetter<X> {
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X get(ByteBuffer segment, int offset);
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}
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interface BufferSetter<X> {
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void set(ByteBuffer buffer, int offset, X o);
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}
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final X value;
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final L layout;
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final SegmentGetter<X, L> segmentGetter;
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final SegmentSetter<X, L> segmentSetter;
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final BufferGetter<X> bufferGetter;
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final BufferSetter<X> bufferSetter;
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Accessor(L layout, X value,
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SegmentGetter<X, L> segmentGetter, SegmentSetter<X, L> segmentSetter,
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BufferGetter<X> bufferGetter, BufferSetter<X> bufferSetter) {
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this.layout = layout;
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this.value = value;
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this.segmentGetter = segmentGetter;
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this.segmentSetter = segmentSetter;
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this.bufferGetter = bufferGetter;
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this.bufferSetter = bufferSetter;
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}
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void test() {
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try (Arena arena = Arena.ofConfined()) {
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MemorySegment segment = arena.allocate(128, 1);
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ByteBuffer buffer = segment.asByteBuffer();
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segmentSetter.set(segment, layout, 8, value);
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assertEquals(bufferGetter.get(buffer, 8), value);
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bufferSetter.set(buffer, 8, value);
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assertEquals(value, segmentGetter.get(segment, layout, 8));
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}
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}
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@SuppressWarnings("unchecked")
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void testHyperAligned() {
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try (Arena arena = Arena.ofConfined()) {
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MemorySegment segment = arena.allocate(64, 1);
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L alignedLayout = (L)layout.withByteAlignment(layout.byteSize() * 2);
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try {
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segmentSetter.set(segment, alignedLayout, 0, value);
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fail();
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} catch (IllegalArgumentException exception) {
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assertTrue(exception.getMessage().contains("greater"));
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}
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try {
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segmentGetter.get(segment, alignedLayout, 0);
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fail();
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} catch (IllegalArgumentException exception) {
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assertTrue(exception.getMessage().contains("greater"));
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}
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}
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}
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X get(MemorySegment segment, long offset) {
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return segmentGetter.get(segment, layout, offset);
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}
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void set(MemorySegment segment, long offset, X value) {
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segmentSetter.set(segment, layout, offset, value);
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}
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static <L extends ValueLayout, X> Accessor<X, L> of(L layout, X value,
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SegmentGetter<X, L> segmentGetter, SegmentSetter<X, L> segmentSetter,
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BufferGetter<X> bufferGetter, BufferSetter<X> bufferSetter) {
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return new Accessor<>(layout, value, segmentGetter, segmentSetter, bufferGetter, bufferSetter);
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}
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}
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@Test(dataProvider = "segmentAccessors")
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public void testSegmentAccess(String testName, Accessor<?, ?> accessor) {
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accessor.test();
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}
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@Test(dataProvider = "segmentAccessors")
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public void testSegmentAccessHyper(String testName, Accessor<?, ?> accessor) {
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if (testName.contains("index")) {
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accessor.testHyperAligned();
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} else {
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throw new SkipException("Skipping");
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}
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}
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@Test(expectedExceptions = IllegalArgumentException.class,
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expectedExceptionsMessageRegExp = ".*Heap segment not allowed.*")
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public void badHeapSegmentSet() {
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long byteSize = ValueLayout.ADDRESS.byteSize();
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Arena scope = Arena.ofAuto();
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MemorySegment targetSegment = scope.allocate(byteSize, 1);
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MemorySegment segment = MemorySegment.ofArray(new byte[]{ 0, 1, 2 });
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targetSegment.set(ValueLayout.ADDRESS, 0, segment); // should throw
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}
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@Test(expectedExceptions = IllegalArgumentException.class,
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expectedExceptionsMessageRegExp = ".*Heap segment not allowed.*")
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public void badHeapSegmentSetAtIndex() {
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long byteSize = ValueLayout.ADDRESS.byteSize();
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Arena scope = Arena.ofAuto();
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MemorySegment targetSegment = scope.allocate(byteSize, 1);
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MemorySegment segment = MemorySegment.ofArray(new byte[]{ 0, 1, 2 });
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targetSegment.setAtIndex(ValueLayout.ADDRESS, 0, segment); // should throw
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}
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@Test(dataProvider = "segmentAccessors")
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public <X, L extends ValueLayout> void badAccessOverflowInIndexedAccess(String testName, Accessor<X, L> accessor) {
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MemorySegment segment = MemorySegment.ofArray(new byte[100]);
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if (testName.contains("/index") && accessor.layout.byteSize() > 1) {
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assertThrows(IndexOutOfBoundsException.class, () -> accessor.get(segment, Long.MAX_VALUE));
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assertThrows(IndexOutOfBoundsException.class, () -> accessor.set(segment, Long.MAX_VALUE, accessor.value));
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}
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}
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@Test(dataProvider = "segmentAccessors")
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public <X, L extends ValueLayout> void negativeOffset(String testName, Accessor<X, L> accessor) {
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MemorySegment segment = MemorySegment.ofArray(new byte[100]);
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assertThrows(IndexOutOfBoundsException.class, () -> accessor.get(segment, -ValueLayout.JAVA_LONG.byteSize()));
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assertThrows(IndexOutOfBoundsException.class, () -> accessor.set(segment, -ValueLayout.JAVA_LONG.byteSize(), accessor.value));
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}
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static final ByteOrder NE = ByteOrder.nativeOrder();
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@DataProvider(name = "segmentAccessors")
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static Object[][] segmentAccessors() {
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return new Object[][]{
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{"byte", Accessor.of(ValueLayout.JAVA_BYTE, (byte) 42,
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MemorySegment::get, MemorySegment::set,
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ByteBuffer::get, ByteBuffer::put)
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},
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{"boolean", Accessor.of(ValueLayout.JAVA_BOOLEAN, false,
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MemorySegment::get, MemorySegment::set,
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(bb, pos) -> bb.get(pos) != 0, (bb, pos, v) -> bb.put(pos, v ? (byte)1 : (byte)0))
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},
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{"char", Accessor.of(ValueLayout.JAVA_CHAR, (char) 42,
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MemorySegment::get, MemorySegment::set,
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(bb, pos) -> bb.order(NE).getChar(pos), (bb, pos, v) -> bb.order(NE).putChar(pos, v))
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},
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{"short", Accessor.of(ValueLayout.JAVA_SHORT, (short) 42,
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MemorySegment::get, MemorySegment::set,
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(bb, pos) -> bb.order(NE).getShort(pos), (bb, pos, v) -> bb.order(NE).putShort(pos, v))
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},
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{"int", Accessor.of(ValueLayout.JAVA_INT, 42,
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MemorySegment::get, MemorySegment::set,
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(bb, pos) -> bb.order(NE).getInt(pos), (bb, pos, v) -> bb.order(NE).putInt(pos, v))
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},
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{"float", Accessor.of(ValueLayout.JAVA_FLOAT, 42f,
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MemorySegment::get, MemorySegment::set,
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(bb, pos) -> bb.order(NE).getFloat(pos), (bb, pos, v) -> bb.order(NE).putFloat(pos, v))
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},
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{"long", Accessor.of(ValueLayout.JAVA_LONG, 42L,
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MemorySegment::get, MemorySegment::set,
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(bb, pos) -> bb.order(NE).getLong(pos), (bb, pos, v) -> bb.order(NE).putLong(pos, v))
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},
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{"double", Accessor.of(ValueLayout.JAVA_DOUBLE, 42d,
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MemorySegment::get, MemorySegment::set,
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(bb, pos) -> bb.order(NE).getDouble(pos), (bb, pos, v) -> bb.order(NE).putDouble(pos, v))
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},
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{ "address", Accessor.of(ValueLayout.ADDRESS, MemorySegment.ofAddress(42),
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MemorySegment::get, MemorySegment::set,
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(bb, pos) -> {
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ByteBuffer nb = bb.order(NE);
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long addr = ValueLayout.ADDRESS.byteSize() == 8 ?
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nb.getLong(pos) : nb.getInt(pos);
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return MemorySegment.ofAddress(addr);
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},
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(bb, pos, v) -> {
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ByteBuffer nb = bb.order(NE);
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if (ValueLayout.ADDRESS.byteSize() == 8) {
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nb.putLong(pos, v.address());
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} else {
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nb.putInt(pos, (int)v.address());
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}
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})
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},
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{"byte/index", Accessor.of(ValueLayout.JAVA_BYTE, (byte) 42,
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MemorySegment::getAtIndex, MemorySegment::setAtIndex,
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(bb, pos) -> bb.order(NE).get(pos), (bb, pos, v) -> bb.order(NE).put(pos, v))
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},
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{"boolean/index", Accessor.of(ValueLayout.JAVA_BOOLEAN, true,
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MemorySegment::getAtIndex, MemorySegment::setAtIndex,
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(bb, pos) -> bb.order(NE).get(pos) != 0, (bb, pos, v) -> bb.order(NE).put(pos, (byte) (v ? 1 : 0)))
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},
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{"char/index", Accessor.of(ValueLayout.JAVA_CHAR, (char) 42,
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MemorySegment::getAtIndex, MemorySegment::setAtIndex,
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(bb, pos) -> bb.order(NE).getChar(pos * 2), (bb, pos, v) -> bb.order(NE).putChar(pos * 2, v))
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},
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{"short/index", Accessor.of(ValueLayout.JAVA_SHORT, (short) 42,
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MemorySegment::getAtIndex, MemorySegment::setAtIndex,
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(bb, pos) -> bb.order(NE).getShort(pos * 2), (bb, pos, v) -> bb.order(NE).putShort(pos * 2, v))
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},
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{"int/index", Accessor.of(ValueLayout.JAVA_INT, 42,
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MemorySegment::getAtIndex, MemorySegment::setAtIndex,
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(bb, pos) -> bb.order(NE).getInt(pos * 4), (bb, pos, v) -> bb.order(NE).putInt(pos * 4, v))
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},
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{"float/index", Accessor.of(ValueLayout.JAVA_FLOAT, 42f,
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MemorySegment::getAtIndex, MemorySegment::setAtIndex,
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(bb, pos) -> bb.order(NE).getFloat(pos * 4), (bb, pos, v) -> bb.order(NE).putFloat(pos * 4, v))
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},
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{"long/index", Accessor.of(ValueLayout.JAVA_LONG, 42L,
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MemorySegment::getAtIndex, MemorySegment::setAtIndex,
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(bb, pos) -> bb.order(NE).getLong(pos * 8), (bb, pos, v) -> bb.order(NE).putLong(pos * 8, v))
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},
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{"double/index", Accessor.of(ValueLayout.JAVA_DOUBLE, 42d,
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MemorySegment::getAtIndex, MemorySegment::setAtIndex,
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(bb, pos) -> bb.order(NE).getDouble(pos * 8), (bb, pos, v) -> bb.order(NE).putDouble(pos * 8, v))
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},
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{ "address/index", Accessor.of(ValueLayout.ADDRESS, MemorySegment.ofAddress(42),
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MemorySegment::getAtIndex, MemorySegment::setAtIndex,
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(bb, pos) -> {
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ByteBuffer nb = bb.order(NE);
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long addr = ValueLayout.ADDRESS.byteSize() == 8 ?
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nb.getLong(pos * 8) : nb.getInt(pos * 4);
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return MemorySegment.ofAddress(addr);
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},
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(bb, pos, v) -> {
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ByteBuffer nb = bb.order(NE);
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if (ValueLayout.ADDRESS.byteSize() == 8) {
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nb.putLong(pos * 8, v.address());
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} else {
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nb.putInt(pos * 4, (int)v.address());
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}
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})
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},
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};
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}
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}
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