547 lines
21 KiB
Java
547 lines
21 KiB
Java
/*
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* Copyright (c) 2019, 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 TestLayouts
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*/
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import java.lang.foreign.*;
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import java.lang.invoke.VarHandle;
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import java.nio.ByteOrder;
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import java.util.ArrayList;
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import java.util.List;
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import java.util.Locale;
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import java.util.function.LongFunction;
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import java.util.stream.Stream;
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import org.testng.annotations.*;
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import static java.lang.foreign.ValueLayout.*;
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import static org.testng.Assert.*;
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public class TestLayouts {
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@Test(dataProvider = "badAlignments", expectedExceptions = IllegalArgumentException.class)
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public void testBadLayoutAlignment(MemoryLayout layout, long alignment) {
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layout.withByteAlignment(alignment);
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}
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@Test(dataProvider = "basicLayoutsAndAddressAndGroups")
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public void testEqualities(MemoryLayout layout) {
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// Use another Type
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MemoryLayout differentType = MemoryLayout.paddingLayout(1);
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assertFalse(layout.equals(differentType));
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// Use another name
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MemoryLayout differentName = layout.withName("CustomName");
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assertFalse(layout.equals(differentName));
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// Use another alignment
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MemoryLayout differentAlignment = layout.withByteAlignment(layout.byteAlignment() * 2);
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assertFalse(layout.equals(differentAlignment));
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// Swap endian
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MemoryLayout differentOrder = JAVA_INT.withOrder(JAVA_INT.order() == ByteOrder.BIG_ENDIAN ? ByteOrder.LITTLE_ENDIAN : ByteOrder.BIG_ENDIAN);
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assertFalse(layout.equals(differentOrder));
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// Something totally different
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assertFalse(layout.equals("A"));
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// Null
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assertFalse(layout.equals(null));
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// Identity
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assertTrue(layout.equals(layout));
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assertFalse(layout.equals(MemoryLayout.sequenceLayout(13, JAVA_LONG)));
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MemoryLayout other = layout.withByteAlignment(16).withByteAlignment(layout.byteAlignment());
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assertTrue(layout.equals(other));
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}
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public void testTargetLayoutEquals() {
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MemoryLayout differentTargetLayout = ADDRESS.withTargetLayout(JAVA_CHAR);
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assertFalse(ADDRESS.equals(differentTargetLayout));
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var equalButNotSame = ADDRESS.withTargetLayout(JAVA_INT).withTargetLayout(JAVA_CHAR);
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assertTrue(differentTargetLayout.equals(equalButNotSame));
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}
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@Test
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public void testIndexedSequencePath() {
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MemoryLayout seq = MemoryLayout.sequenceLayout(10, ValueLayout.JAVA_INT);
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try (Arena arena = Arena.ofConfined()) {
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MemorySegment segment = arena.allocate(seq);;
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VarHandle indexHandle = seq.varHandle(MemoryLayout.PathElement.sequenceElement());
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// init segment
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for (int i = 0 ; i < 10 ; i++) {
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indexHandle.set(segment, 0L, (long)i, i);
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}
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//check statically indexed handles
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for (int i = 0 ; i < 10 ; i++) {
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VarHandle preindexHandle = seq.varHandle(MemoryLayout.PathElement.sequenceElement(i));
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int expected = (int)indexHandle.get(segment, 0L, (long)i);
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int found = (int)preindexHandle.get(segment, 0L);
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assertEquals(expected, found);
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}
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}
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}
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@Test(expectedExceptions = IllegalArgumentException.class)
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public void testBadBoundSequenceLayoutResize() {
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SequenceLayout seq = MemoryLayout.sequenceLayout(10, ValueLayout.JAVA_INT);
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seq.withElementCount(-1);
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}
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@Test(expectedExceptions = IllegalArgumentException.class)
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public void testReshape() {
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SequenceLayout layout = MemoryLayout.sequenceLayout(10, JAVA_INT);
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layout.reshape();
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}
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@Test(dataProvider = "basicLayoutsAndAddressAndGroups", expectedExceptions = IllegalArgumentException.class)
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public void testGroupIllegalAlignmentNotPowerOfTwo(MemoryLayout layout) {
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layout.withByteAlignment(9);
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}
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@Test(dataProvider = "basicLayoutsAndAddressAndGroups", expectedExceptions = IllegalArgumentException.class)
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public void testGroupIllegalAlignmentNotGreaterOrEqualTo1(MemoryLayout layout) {
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layout.withByteAlignment(0);
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}
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@Test
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public void testEqualsPadding() {
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PaddingLayout paddingLayout = MemoryLayout.paddingLayout(2);
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testEqualities(paddingLayout);
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PaddingLayout paddingLayout2 = MemoryLayout.paddingLayout(4);
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assertNotEquals(paddingLayout, paddingLayout2);
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}
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@Test
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public void testEmptyGroup() {
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MemoryLayout struct = MemoryLayout.structLayout();
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assertEquals(struct.byteSize(), 0);
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assertEquals(struct.byteAlignment(), 1);
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MemoryLayout union = MemoryLayout.unionLayout();
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assertEquals(union.byteSize(), 0);
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assertEquals(union.byteAlignment(), 1);
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}
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@Test
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public void testStructSizeAndAlign() {
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MemoryLayout struct = MemoryLayout.structLayout(
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MemoryLayout.paddingLayout(1),
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ValueLayout.JAVA_BYTE,
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ValueLayout.JAVA_CHAR,
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ValueLayout.JAVA_INT,
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ValueLayout.JAVA_LONG
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);
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assertEquals(struct.byteSize(), 1 + 1 + 2 + 4 + 8);
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assertEquals(struct.byteAlignment(), 8);
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}
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@Test(dataProvider="basicLayouts")
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public void testPaddingNoAlign(MemoryLayout layout) {
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assertEquals(MemoryLayout.paddingLayout(layout.byteSize()).byteAlignment(), 1);
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}
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@Test(dataProvider="basicLayouts")
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public void testStructPaddingAndAlign(MemoryLayout layout) {
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MemoryLayout struct = MemoryLayout.structLayout(
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layout, MemoryLayout.paddingLayout(16 - layout.byteSize()));
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assertEquals(struct.byteAlignment(), layout.byteAlignment());
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}
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@Test(dataProvider="basicLayouts")
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public void testUnionPaddingAndAlign(MemoryLayout layout) {
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MemoryLayout struct = MemoryLayout.unionLayout(
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layout, MemoryLayout.paddingLayout(16 - layout.byteSize()));
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assertEquals(struct.byteAlignment(), layout.byteAlignment());
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}
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@Test
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public void testUnionSizeAndAlign() {
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MemoryLayout struct = MemoryLayout.unionLayout(
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ValueLayout.JAVA_BYTE,
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ValueLayout.JAVA_CHAR,
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ValueLayout.JAVA_INT,
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ValueLayout.JAVA_LONG
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);
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assertEquals(struct.byteSize(), 8);
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assertEquals(struct.byteAlignment(), 8);
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}
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@Test
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public void testSequenceBadCount() {
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assertThrows(IllegalArgumentException.class, // negative
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() -> MemoryLayout.sequenceLayout(-2, JAVA_SHORT));
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}
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@Test
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public void testSequenceNegativeElementCount() {
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assertThrows(IllegalArgumentException.class, // negative
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() -> MemoryLayout.sequenceLayout(-1, JAVA_SHORT));
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}
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@Test
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public void testSequenceOverflow() {
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assertThrows(IllegalArgumentException.class, // negative
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() -> MemoryLayout.sequenceLayout(Long.MAX_VALUE, JAVA_SHORT));
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assertThrows(IllegalArgumentException.class, // flip back to positive
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() -> MemoryLayout.sequenceLayout(Long.MAX_VALUE/3, JAVA_LONG));
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assertThrows(IllegalArgumentException.class, // flip back to positive
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() -> MemoryLayout.sequenceLayout(0, JAVA_LONG).withElementCount(Long.MAX_VALUE));
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}
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@Test
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public void testSequenceLayoutWithZeroLength() {
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SequenceLayout layout = MemoryLayout.sequenceLayout(0, JAVA_INT);
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assertEquals(layout.toString().toLowerCase(Locale.ROOT), "[0:i4]");
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SequenceLayout nested = MemoryLayout.sequenceLayout(0, layout);
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assertEquals(nested.toString().toLowerCase(Locale.ROOT), "[0:[0:i4]]");
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SequenceLayout layout2 = MemoryLayout.sequenceLayout(0, JAVA_INT);
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assertEquals(layout, layout2);
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SequenceLayout nested2 = MemoryLayout.sequenceLayout(0, layout2);
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assertEquals(nested, nested2);
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}
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@Test
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public void testStructOverflow() {
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assertThrows(IllegalArgumentException.class, // negative
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() -> MemoryLayout.structLayout(MemoryLayout.sequenceLayout(Long.MAX_VALUE, JAVA_BYTE),
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MemoryLayout.sequenceLayout(Long.MAX_VALUE, JAVA_BYTE)));
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assertThrows(IllegalArgumentException.class, // flip back to positive
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() -> MemoryLayout.structLayout(MemoryLayout.sequenceLayout(Long.MAX_VALUE, JAVA_BYTE),
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MemoryLayout.sequenceLayout(Long.MAX_VALUE, JAVA_BYTE),
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MemoryLayout.sequenceLayout(Long.MAX_VALUE, JAVA_BYTE)));
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}
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@Test
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public void testPadding() {
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var padding = MemoryLayout.paddingLayout(1);
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assertEquals(padding.byteAlignment(), 1);
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}
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@Test
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public void testPaddingInStruct() {
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var padding = MemoryLayout.paddingLayout(1);
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var struct = MemoryLayout.structLayout(padding);
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assertEquals(struct.byteAlignment(), 1);
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}
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@Test
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public void testPaddingIllegalByteSize() {
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for (long byteSize : List.of(-1L, 0L)) {
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try {
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MemoryLayout.paddingLayout(byteSize);
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fail("byte size cannot be " + byteSize);
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} catch (IllegalArgumentException ignore) {
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// Happy path
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}
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}
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}
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@Test
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public void testStructToString() {
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for (ByteOrder order : List.of(ByteOrder.LITTLE_ENDIAN, ByteOrder.BIG_ENDIAN)) {
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String intRepresentation = (order == ByteOrder.LITTLE_ENDIAN ? "i" : "I");
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StructLayout padding = MemoryLayout.structLayout(JAVA_INT.withOrder(order)).withName("struct");
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assertEquals(padding.toString(), "[" + intRepresentation + "4](struct)");
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var toStringUnaligned = padding.withByteAlignment(8).toString();
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assertEquals(toStringUnaligned, "8%[" + intRepresentation + "4](struct)");
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}
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}
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@Test(dataProvider = "layoutKinds")
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public void testPadding(LayoutKind kind) {
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assertEquals(kind == LayoutKind.PADDING, kind.layout instanceof PaddingLayout);
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}
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@Test(dataProvider="layoutsAndAlignments")
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public void testAlignmentString(MemoryLayout layout, long byteAlign) {
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long[] alignments = { 1, 2, 4, 8, 16 };
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for (long a : alignments) {
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if (layout.byteAlignment() == byteAlign) {
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assertFalse(layout.toString().contains("%"));
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if (a >= layout.byteAlignment()) {
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assertEquals(layout.withByteAlignment(a).toString().contains("%"), a != byteAlign);
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}
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}
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}
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}
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@Test(dataProvider="layoutsAndAlignments")
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public void testBadByteAlignment(MemoryLayout layout, long byteAlign) {
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long[] alignments = { 1, 2, 4, 8, 16 };
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for (long a : alignments) {
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if (a < byteAlign && !(layout instanceof ValueLayout)) {
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assertThrows(IllegalArgumentException.class, () -> layout.withByteAlignment(a));
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}
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}
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}
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@Test(dataProvider="layoutsAndAlignments", expectedExceptions = IllegalArgumentException.class)
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public void testBadSequenceElementAlignmentTooBig(MemoryLayout layout, long byteAlign) {
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layout = layout.withByteAlignment(layout.byteSize() * 2); // hyper-align
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MemoryLayout.sequenceLayout(1, layout);
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}
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@Test(dataProvider="layoutsAndAlignments")
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public void testBadSequenceElementSizeNotMultipleOfAlignment(MemoryLayout layout, long byteAlign) {
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boolean shouldFail = layout.byteSize() % layout.byteAlignment() != 0;
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try {
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MemoryLayout.sequenceLayout(1, layout);
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assertFalse(shouldFail);
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} catch (IllegalArgumentException ex) {
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assertTrue(shouldFail);
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}
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}
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@Test(dataProvider="layoutsAndAlignments")
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public void testBadSpliteratorElementSizeNotMultipleOfAlignment(MemoryLayout layout, long byteAlign) {
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boolean shouldFail = layout.byteSize() % layout.byteAlignment() != 0;
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try (Arena arena = Arena.ofConfined()) {
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MemorySegment segment = arena.allocate(layout);
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segment.spliterator(layout);
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assertFalse(shouldFail);
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} catch (IllegalArgumentException ex) {
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assertTrue(shouldFail);
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}
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}
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@Test(dataProvider="layoutsAndAlignments")
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public void testBadElementsElementSizeNotMultipleOfAlignment(MemoryLayout layout, long byteAlign) {
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boolean shouldFail = layout.byteSize() % layout.byteAlignment() != 0;
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try (Arena arena = Arena.ofConfined()) {
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MemorySegment segment = arena.allocate(layout);
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segment.elements(layout);
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assertFalse(shouldFail);
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} catch (IllegalArgumentException ex) {
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assertTrue(shouldFail);
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}
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}
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@Test(dataProvider="layoutsAndAlignments", expectedExceptions = IllegalArgumentException.class)
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public void testBadStruct(MemoryLayout layout, long byteAlign) {
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layout = layout.withByteAlignment(layout.byteSize() * 2); // hyper-align
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MemoryLayout.structLayout(layout, layout);
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}
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@Test(expectedExceptions = IllegalArgumentException.class)
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public void testSequenceElement() {
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SequenceLayout layout = MemoryLayout.sequenceLayout(10, JAVA_INT);
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// Step must be != 0
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PathElement.sequenceElement(3, 0);
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}
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@Test
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public void testVarHandleCaching() {
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assertSame(JAVA_INT.varHandle(), JAVA_INT.varHandle());
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assertSame(JAVA_INT.withName("foo").varHandle(), JAVA_INT.varHandle());
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assertNotSame(JAVA_INT_UNALIGNED.varHandle(), JAVA_INT.varHandle());
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assertNotSame(ADDRESS.withTargetLayout(JAVA_INT).varHandle(), ADDRESS.varHandle());
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}
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@Test(expectedExceptions=IllegalArgumentException.class,
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expectedExceptionsMessageRegExp=".*offset is negative.*")
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public void testScaleNegativeOffset() {
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JAVA_INT.scale(-1, 0);
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}
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@Test(expectedExceptions=IllegalArgumentException.class,
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expectedExceptionsMessageRegExp=".*index is negative.*")
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public void testScaleNegativeIndex() {
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JAVA_INT.scale(0, -1);
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}
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@Test(expectedExceptions=ArithmeticException.class)
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public void testScaleAddOverflow() {
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JAVA_INT.scale(Long.MAX_VALUE, 1);
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}
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@Test(expectedExceptions=ArithmeticException.class)
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public void testScaleMultiplyOverflow() {
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JAVA_INT.scale(0, Long.MAX_VALUE);
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}
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@DataProvider(name = "badAlignments")
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public Object[][] layoutsAndBadAlignments() {
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LayoutKind[] layoutKinds = LayoutKind.values();
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Object[][] values = new Object[layoutKinds.length * 2][2];
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for (int i = 0; i < layoutKinds.length ; i++) {
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values[i * 2] = new Object[] { layoutKinds[i].layout, 0 }; // smaller than 1
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values[(i * 2) + 1] = new Object[] { layoutKinds[i].layout, 5 }; // not a power of 2
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}
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return values;
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}
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@DataProvider(name = "layoutKinds")
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public Object[][] layoutsKinds() {
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return Stream.of(LayoutKind.values())
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.map(lk -> new Object[] { lk })
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.toArray(Object[][]::new);
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}
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enum SizedLayoutFactory {
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VALUE_LE(size -> valueLayoutForSize((int)size).withOrder(ByteOrder.LITTLE_ENDIAN)),
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VALUE_BE(size -> valueLayoutForSize((int)size).withOrder(ByteOrder.BIG_ENDIAN)),
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PADDING(MemoryLayout::paddingLayout),
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SEQUENCE(size -> MemoryLayout.sequenceLayout(size, MemoryLayout.paddingLayout(1)));
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private final LongFunction<MemoryLayout> factory;
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SizedLayoutFactory(LongFunction<MemoryLayout> factory) {
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this.factory = factory;
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}
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MemoryLayout make(long size) {
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return factory.apply(size);
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}
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}
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static ValueLayout valueLayoutForSize(int size) {
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return switch (size) {
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case 1 -> JAVA_BYTE;
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case 2 -> JAVA_SHORT;
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case 4 -> JAVA_INT;
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case 8 -> JAVA_LONG;
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default -> throw new UnsupportedOperationException();
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};
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}
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enum LayoutKind {
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VALUE(ValueLayout.JAVA_BYTE),
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PADDING(MemoryLayout.paddingLayout(1)),
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SEQUENCE(MemoryLayout.sequenceLayout(1, MemoryLayout.paddingLayout(1))),
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STRUCT(MemoryLayout.structLayout(MemoryLayout.paddingLayout(1), MemoryLayout.paddingLayout(1))),
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UNION(MemoryLayout.unionLayout(MemoryLayout.paddingLayout(1), MemoryLayout.paddingLayout(1)));
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final MemoryLayout layout;
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LayoutKind(MemoryLayout layout) {
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this.layout = layout;
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}
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}
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@DataProvider(name = "basicLayouts")
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public Object[][] basicLayouts() {
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return Stream.of(basicLayouts)
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.map(l -> new Object[] { l })
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.toArray(Object[][]::new);
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}
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@DataProvider(name = "basicLayoutsAndAddress")
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public Object[][] basicLayoutsAndAddress() {
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return Stream.concat(Stream.of(basicLayouts), Stream.of(ADDRESS))
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.map(l -> new Object[] { l })
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.toArray(Object[][]::new);
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}
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@DataProvider(name = "basicLayoutsAndAddressAndGroups")
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public Object[][] basicLayoutsAndAddressAndGroups() {
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return Stream.concat(Stream.concat(Stream.of(basicLayouts), Stream.of(ADDRESS)), groupLayoutStream())
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.map(l -> new Object[] { l })
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.toArray(Object[][]::new);
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}
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@DataProvider(name = "layoutsAndAlignments")
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public Object[][] layoutsAndAlignments() {
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List<Object[]> layoutsAndAlignments = new ArrayList<>();
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int i = 0;
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//add basic layouts
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for (MemoryLayout l : basicLayouts) {
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layoutsAndAlignments.add(new Object[] { l, l.byteAlignment() });
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}
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//add basic layouts wrapped in a sequence with given size
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for (MemoryLayout l : basicLayouts) {
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layoutsAndAlignments.add(new Object[] { MemoryLayout.sequenceLayout(4, l), l.byteAlignment() });
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}
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//add basic layouts wrapped in a struct
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for (MemoryLayout l1 : basicLayouts) {
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for (MemoryLayout l2 : basicLayouts) {
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if (l1.byteSize() % l2.byteAlignment() != 0) continue; // second element is not aligned, skip
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long align = Math.max(l1.byteAlignment(), l2.byteAlignment());
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layoutsAndAlignments.add(new Object[]{MemoryLayout.structLayout(l1, l2), align});
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}
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}
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//add basic layouts wrapped in a union
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for (MemoryLayout l1 : basicLayouts) {
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for (MemoryLayout l2 : basicLayouts) {
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long align = Math.max(l1.byteAlignment(), l2.byteAlignment());
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layoutsAndAlignments.add(new Object[]{MemoryLayout.unionLayout(l1, l2), align});
|
|
}
|
|
}
|
|
return layoutsAndAlignments.toArray(Object[][]::new);
|
|
}
|
|
|
|
@DataProvider(name = "groupLayouts")
|
|
public Object[][] groupLayouts() {
|
|
return groupLayoutStream()
|
|
.map(l -> new Object[] { l })
|
|
.toArray(Object[][]::new);
|
|
}
|
|
|
|
@DataProvider(name = "validCarriers")
|
|
public Object[][] validCarriers() {
|
|
return Stream.of(
|
|
boolean.class,
|
|
byte.class,
|
|
char.class,
|
|
short.class,
|
|
int.class,
|
|
long.class,
|
|
float.class,
|
|
double.class,
|
|
MemorySegment.class
|
|
)
|
|
.map(l -> new Object[]{l})
|
|
.toArray(Object[][]::new);
|
|
}
|
|
|
|
static Stream<MemoryLayout> groupLayoutStream() {
|
|
return Stream.of(
|
|
MemoryLayout.sequenceLayout(10, JAVA_INT),
|
|
MemoryLayout.structLayout(JAVA_INT, MemoryLayout.paddingLayout(4), JAVA_LONG),
|
|
MemoryLayout.unionLayout(JAVA_LONG, JAVA_DOUBLE)
|
|
);
|
|
}
|
|
|
|
static ValueLayout[] basicLayouts = {
|
|
ValueLayout.JAVA_BYTE,
|
|
ValueLayout.JAVA_CHAR,
|
|
ValueLayout.JAVA_SHORT,
|
|
ValueLayout.JAVA_INT,
|
|
ValueLayout.JAVA_FLOAT,
|
|
ValueLayout.JAVA_LONG,
|
|
ValueLayout.JAVA_DOUBLE,
|
|
};
|
|
}
|