501 lines
20 KiB
Java
501 lines
20 KiB
Java
/*
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* Copyright (c) 2019, 2024, 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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* @requires vm.bits == 64
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* @run testng/othervm -Xmx4G -XX:MaxDirectMemorySize=1M --enable-native-access=ALL-UNNAMED TestSegments
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*/
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import java.lang.foreign.*;
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import org.testng.annotations.DataProvider;
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import org.testng.annotations.Test;
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import java.lang.invoke.VarHandle;
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import java.nio.ByteBuffer;
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import java.util.HashSet;
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import java.util.List;
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import java.util.Set;
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import java.util.concurrent.atomic.AtomicInteger;
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import java.util.concurrent.atomic.AtomicReference;
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import java.util.function.IntFunction;
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import java.util.function.Supplier;
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import static java.lang.foreign.ValueLayout.JAVA_BYTE;
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import static java.lang.foreign.ValueLayout.JAVA_INT;
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import static org.testng.Assert.*;
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public class TestSegments {
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@Test(dataProvider = "badSizeAndAlignments", expectedExceptions = IllegalArgumentException.class)
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public void testBadAllocateAlign(long size, long align) {
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Arena.ofAuto().allocate(size, align);
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}
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@Test
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public void testZeroLengthNativeSegment() {
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try (Arena arena = Arena.ofConfined()) {
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var segment = arena.allocate(0, 1);
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assertEquals(segment.byteSize(), 0);
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MemoryLayout seq = MemoryLayout.sequenceLayout(0, JAVA_INT);
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segment = arena.allocate(seq);
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assertEquals(segment.byteSize(), 0);
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assertEquals(segment.address() % seq.byteAlignment(), 0);
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segment = arena.allocate(0, 4);
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assertEquals(segment.byteSize(), 0);
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assertEquals(segment.address() % 4, 0);
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MemorySegment rawAddress = MemorySegment.ofAddress(segment.address());
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assertEquals(rawAddress.byteSize(), 0);
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assertEquals(rawAddress.address() % 4, 0);
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}
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}
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@Test(expectedExceptions = { OutOfMemoryError.class,
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IllegalArgumentException.class })
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public void testAllocateTooBig() {
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Arena.ofAuto().allocate(Long.MAX_VALUE, 1);
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}
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@Test(expectedExceptions = OutOfMemoryError.class)
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public void testNativeAllocationTooBig() {
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Arena scope = Arena.ofAuto();
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MemorySegment segment = scope.allocate(1024L * 1024 * 8 * 2, 1); // 2M
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}
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@Test
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public void testNativeSegmentIsZeroed() {
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VarHandle byteHandle = ValueLayout.JAVA_BYTE.varHandle();
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try (Arena arena = Arena.ofConfined()) {
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MemorySegment segment = arena.allocate(1000, 1);
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for (long i = 0 ; i < segment.byteSize() ; i++) {
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assertEquals(0, (byte)byteHandle.get(segment, i));
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}
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}
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}
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@Test
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public void testSlices() {
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VarHandle byteHandle = ValueLayout.JAVA_BYTE.varHandle();
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try (Arena arena = Arena.ofConfined()) {
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MemorySegment segment = arena.allocate(10, 1);
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//init
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for (byte i = 0 ; i < segment.byteSize() ; i++) {
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byteHandle.set(segment, (long)i, i);
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}
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for (int offset = 0 ; offset < 10 ; offset++) {
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MemorySegment slice = segment.asSlice(offset);
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for (long i = offset ; i < 10 ; i++) {
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assertEquals(
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byteHandle.get(segment, i),
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byteHandle.get(slice, i - offset)
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);
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}
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}
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}
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}
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@Test(dataProvider = "segmentFactories")
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public void testDerivedScopes(Supplier<MemorySegment> segmentSupplier) {
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MemorySegment segment = segmentSupplier.get();
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assertEquals(segment.scope(), segment.scope());
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// one level
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assertEquals(segment.asSlice(0).scope(), segment.scope());
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assertEquals(segment.asReadOnly().scope(), segment.scope());
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// two levels
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assertEquals(segment.asSlice(0).asReadOnly().scope(), segment.scope());
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assertEquals(segment.asReadOnly().asSlice(0).scope(), segment.scope());
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// check fresh every time
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MemorySegment another = segmentSupplier.get();
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assertNotEquals(segment.scope(), another.scope());
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}
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@Test
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public void testEqualsOffHeap() {
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try (Arena arena = Arena.ofConfined()) {
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MemorySegment segment = arena.allocate(100, 1);
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assertEquals(segment, segment.asReadOnly());
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assertEquals(segment, segment.asSlice(0, 100));
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assertNotEquals(segment, segment.asSlice(10, 90));
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assertEquals(segment, segment.asSlice(0, 90));
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assertEquals(segment, MemorySegment.ofAddress(segment.address()));
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MemorySegment segment2 = arena.allocate(100, 1);
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assertNotEquals(segment, segment2);
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}
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}
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@Test
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public void testEqualsOnHeap() {
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MemorySegment segment = MemorySegment.ofArray(new byte[100]);
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assertEquals(segment, segment.asReadOnly());
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assertEquals(segment, segment.asSlice(0, 100));
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assertNotEquals(segment, segment.asSlice(10, 90));
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assertEquals(segment, segment.asSlice(0, 90));
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MemorySegment segment2 = MemorySegment.ofArray(new byte[100]);
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assertNotEquals(segment, segment2);
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}
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@Test
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public void testHashCodeOffHeap() {
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try (Arena arena = Arena.ofConfined()) {
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MemorySegment segment = arena.allocate(100, 1);
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assertEquals(segment.hashCode(), segment.asReadOnly().hashCode());
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assertEquals(segment.hashCode(), segment.asSlice(0, 100).hashCode());
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assertEquals(segment.hashCode(), segment.asSlice(0, 90).hashCode());
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assertEquals(segment.hashCode(), MemorySegment.ofAddress(segment.address()).hashCode());
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}
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}
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@Test
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public void testHashCodeOnHeap() {
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MemorySegment segment = MemorySegment.ofArray(new byte[100]);
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assertEquals(segment.hashCode(), segment.asReadOnly().hashCode());
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assertEquals(segment.hashCode(), segment.asSlice(0, 100).hashCode());
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assertEquals(segment.hashCode(), segment.asSlice(0, 90).hashCode());
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}
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@Test(expectedExceptions = IndexOutOfBoundsException.class)
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public void testSmallSegmentMax() {
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long offset = (long)Integer.MAX_VALUE + (long)Integer.MAX_VALUE + 2L + 6L; // overflows to 6 when cast to int
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Arena scope = Arena.ofAuto();
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MemorySegment memorySegment = scope.allocate(10, 1);
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memorySegment.get(JAVA_INT, offset);
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}
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@Test(expectedExceptions = IndexOutOfBoundsException.class)
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public void testSmallSegmentMin() {
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long offset = ((long)Integer.MIN_VALUE * 2L) + 6L; // underflows to 6 when cast to int
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Arena scope = Arena.ofAuto();
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MemorySegment memorySegment = scope.allocate(10L, 1);
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memorySegment.get(JAVA_INT, offset);
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}
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@Test
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public void testSegmentOOBMessage() {
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try {
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var segment = Arena.global().allocate(10, 1);
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segment.getAtIndex(ValueLayout.JAVA_INT, 2);
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} catch (IndexOutOfBoundsException ex) {
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assertTrue(ex.getMessage().contains("Out of bound access"));
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assertTrue(ex.getMessage().contains("offset = 8"));
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assertTrue(ex.getMessage().contains("length = 4"));
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}
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}
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@Test(dataProvider = "segmentFactories")
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public void testAccessModesOfFactories(Supplier<MemorySegment> segmentSupplier) {
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MemorySegment segment = segmentSupplier.get();
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assertFalse(segment.isReadOnly());
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}
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@DataProvider(name = "scopes")
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public Object[][] scopes() {
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return new Object[][] {
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{ Arena.ofAuto(), false },
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{ Arena.global(), false },
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{ Arena.ofConfined(), true },
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{ Arena.ofShared(), false }
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};
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}
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@Test(dataProvider = "scopes")
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public void testIsAccessibleBy(Arena arena, boolean isConfined) {
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MemorySegment segment = MemorySegment.NULL.reinterpret(arena, null);
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assertTrue(segment.isAccessibleBy(Thread.currentThread()));
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assertTrue(segment.isAccessibleBy(new Thread()) != isConfined);
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}
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@Test(dataProvider = "segmentFactories")
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public void testToString(Supplier<MemorySegment> segmentSupplier) {
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var segment = segmentSupplier.get();
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String s = segment.toString();
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assertTrue(s.startsWith("MemorySegment{"));
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assertTrue(s.contains("address: 0x"));
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assertTrue(s.contains("byteSize: "));
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if (segment.heapBase().isPresent()) {
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assertTrue(s.contains("heapBase: ["));
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} else {
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assertFalse(s.contains("heapBase: "));
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}
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assertFalse(s.contains("Optional"));
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}
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@DataProvider(name = "segmentFactories")
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public Object[][] segmentFactories() {
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List<Supplier<MemorySegment>> l = List.of(
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() -> MemorySegment.ofArray(new byte[] { 0x00, 0x01, 0x02, 0x03 }),
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() -> MemorySegment.ofArray(new char[] {'a', 'b', 'c', 'd' }),
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() -> MemorySegment.ofArray(new double[] { 1d, 2d, 3d, 4d} ),
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() -> MemorySegment.ofArray(new float[] { 1.0f, 2.0f, 3.0f, 4.0f }),
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() -> MemorySegment.ofArray(new int[] { 1, 2, 3, 4 }),
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() -> MemorySegment.ofArray(new long[] { 1L, 2L, 3L, 4L } ),
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() -> MemorySegment.ofArray(new short[] { 1, 2, 3, 4 } ),
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() -> Arena.ofAuto().allocate(4L, 1),
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() -> Arena.ofAuto().allocate(4L, 8),
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() -> Arena.ofAuto().allocate(JAVA_INT),
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() -> Arena.ofAuto().allocate(4L, 1),
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() -> Arena.ofAuto().allocate(4L, 8),
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() -> Arena.ofAuto().allocate(JAVA_INT)
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);
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return l.stream().map(s -> new Object[] { s }).toArray(Object[][]::new);
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}
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@Test(dataProvider = "segmentFactories")
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public void testFill(Supplier<MemorySegment> segmentSupplier) {
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VarHandle byteHandle = ValueLayout.JAVA_BYTE.varHandle();
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for (byte value : new byte[] {(byte) 0xFF, (byte) 0x00, (byte) 0x45}) {
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MemorySegment segment = segmentSupplier.get();
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segment.fill(value);
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for (long l = 0; l < segment.byteSize(); l++) {
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assertEquals((byte) byteHandle.get(segment, l), value);
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}
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// fill a slice
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var sliceSegment = segment.asSlice(1, segment.byteSize() - 2).fill((byte) ~value);
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for (long l = 0; l < sliceSegment.byteSize(); l++) {
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assertEquals((byte) byteHandle.get(sliceSegment, l), ~value);
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}
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// assert enclosing slice
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assertEquals((byte) byteHandle.get(segment, 0L), value);
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for (long l = 1; l < segment.byteSize() - 2; l++) {
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assertEquals((byte) byteHandle.get(segment, l), (byte) ~value);
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}
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assertEquals((byte) byteHandle.get(segment, segment.byteSize() - 1L), value);
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}
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}
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@Test(dataProvider = "segmentFactories")
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public void testHeapBase(Supplier<MemorySegment> segmentSupplier) {
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MemorySegment segment = segmentSupplier.get();
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assertEquals(segment.isNative(), !segment.heapBase().isPresent());
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segment = segment.asReadOnly();
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assertTrue(segment.heapBase().isEmpty());
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}
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@Test
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public void testScopeConfinedArena() {
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try (Arena arena = Arena.ofConfined()) {
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MemorySegment segment = arena.allocate(100);
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assertEquals(segment.scope(), arena.scope());
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}
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}
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@Test
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public void testScopeSharedArena() {
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try (Arena arena = Arena.ofShared()) {
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MemorySegment segment = arena.allocate(100);
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assertEquals(segment.scope(), arena.scope());
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}
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}
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@Test
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public void testScopeAutoArena() {
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Arena arena = Arena.ofAuto();
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MemorySegment segment = arena.allocate(100);
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assertEquals(segment.scope(), arena.scope());
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}
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@Test
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public void testScopeGlobalArena() {
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Arena arena = Arena.global();
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MemorySegment segment = arena.allocate(100);
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assertEquals(segment.scope(), arena.scope());
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}
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@Test(dataProvider = "segmentFactories", expectedExceptions = IllegalArgumentException.class)
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public void testFillIllegalAccessMode(Supplier<MemorySegment> segmentSupplier) {
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MemorySegment segment = segmentSupplier.get();
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segment.asReadOnly().fill((byte) 0xFF);
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}
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@Test(dataProvider = "segmentFactories", expectedExceptions = IllegalArgumentException.class)
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public void testFromStringIllegalAccessMode(Supplier<MemorySegment> segmentSupplier) {
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MemorySegment segment = segmentSupplier.get();
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segment.asReadOnly().setString(0, "a");
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}
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@Test(dataProvider = "segmentFactories")
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public void testFillThread(Supplier<MemorySegment> segmentSupplier) throws Exception {
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MemorySegment segment = segmentSupplier.get();
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AtomicReference<RuntimeException> exception = new AtomicReference<>();
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Runnable action = () -> {
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try {
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segment.fill((byte) 0xBA);
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} catch (RuntimeException e) {
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exception.set(e);
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}
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};
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Thread thread = new Thread(action);
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thread.start();
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thread.join();
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if (!segment.isAccessibleBy(Thread.currentThread())) {
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RuntimeException e = exception.get();
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throw e;
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} else {
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assertNull(exception.get());
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}
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}
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@Test
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public void testFillEmpty() {
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MemorySegment.ofArray(new byte[] { }).fill((byte) 0xFF);
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MemorySegment.ofArray(new byte[2]).asSlice(0, 0).fill((byte) 0xFF);
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MemorySegment.ofBuffer(ByteBuffer.allocateDirect(0)).fill((byte) 0xFF);
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}
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@Test(dataProvider = "heapFactories")
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public void testVirtualizedBaseAddress(IntFunction<MemorySegment> heapSegmentFactory, int factor) {
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MemorySegment segment = heapSegmentFactory.apply(10);
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assertEquals(segment.address(), 0); // base address should be zero (no leaking of impl details)
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MemorySegment end = segment.asSlice(segment.byteSize(), 0);
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assertEquals(end.address(), segment.byteSize()); // end address should be equal to segment byte size
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}
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@Test
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void testReinterpret() {
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AtomicInteger counter = new AtomicInteger();
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try (Arena arena = Arena.ofConfined()){
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// check size
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assertEquals(MemorySegment.ofAddress(42).reinterpret(100).byteSize(), 100);
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assertEquals(MemorySegment.ofAddress(42).reinterpret(100, Arena.ofAuto(), null).byteSize(), 100);
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// check scope and cleanup
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assertEquals(MemorySegment.ofAddress(42).reinterpret(100, arena, s -> counter.incrementAndGet()).scope(), arena.scope());
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assertEquals(MemorySegment.ofAddress(42).reinterpret(arena, _ -> counter.incrementAndGet()).scope(), arena.scope());
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// check read-only state
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assertFalse(MemorySegment.ofAddress(42).reinterpret(100).isReadOnly());
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assertTrue(MemorySegment.ofAddress(42).asReadOnly().reinterpret(100).isReadOnly());
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assertTrue(MemorySegment.ofAddress(42).asReadOnly().reinterpret(100, Arena.ofAuto(), null).isReadOnly());
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assertTrue(MemorySegment.ofAddress(42).asReadOnly().reinterpret(arena, _ -> counter.incrementAndGet()).isReadOnly());
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}
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assertEquals(counter.get(), 3);
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}
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@Test
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void testReinterpretArenaClose() {
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MemorySegment segment;
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try (Arena arena = Arena.ofConfined()){
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try (Arena otherArena = Arena.ofConfined()) {
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segment = arena.allocate(100);
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segment = segment.reinterpret(otherArena, null);
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}
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final MemorySegment sOther = segment;
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assertThrows(IllegalStateException.class, () -> sOther.get(JAVA_BYTE, 0));
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segment = segment.reinterpret(arena, null);
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final MemorySegment sOriginal = segment;
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sOriginal.get(JAVA_BYTE, 0);
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}
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final MemorySegment closed = segment;
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assertThrows(IllegalStateException.class, () -> closed.get(JAVA_BYTE, 0));
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}
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@Test
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void testThrowInCleanup() {
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AtomicInteger counter = new AtomicInteger();
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RuntimeException thrown = null;
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Set<String> expected = new HashSet<>();
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try (Arena arena = Arena.ofConfined()) {
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for (int i = 0 ; i < 10 ; i++) {
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String msg = "exception#" + i;
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expected.add(msg);
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MemorySegment.ofAddress(42).reinterpret(arena, seg -> {
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throw new IllegalArgumentException(msg);
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});
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}
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for (int i = 10 ; i < 20 ; i++) {
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String msg = "exception#" + i;
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expected.add(msg);
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MemorySegment.ofAddress(42).reinterpret(100, arena, seg -> {
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throw new IllegalArgumentException(msg);
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});
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}
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MemorySegment.ofAddress(42).reinterpret(arena, seg -> counter.incrementAndGet());
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} catch (RuntimeException ex) {
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thrown = ex;
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}
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assertNotNull(thrown);
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assertEquals(counter.get(), 1);
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assertEquals(thrown.getSuppressed().length, 19);
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Throwable[] errors = new IllegalArgumentException[20];
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assertTrue(thrown instanceof IllegalArgumentException);
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errors[0] = thrown;
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for (int i = 0 ; i < 19 ; i++) {
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assertTrue(thrown.getSuppressed()[i] instanceof IllegalArgumentException);
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errors[i + 1] = thrown.getSuppressed()[i];
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}
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for (Throwable t : errors) {
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assertTrue(expected.remove(t.getMessage()));
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}
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assertTrue(expected.isEmpty());
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}
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@Test
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void testThrowInCleanupSame() {
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AtomicInteger counter = new AtomicInteger();
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Throwable thrown = null;
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IllegalArgumentException iae = new IllegalArgumentException();
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try (Arena arena = Arena.ofConfined()) {
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for (int i = 0 ; i < 10 ; i++) {
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MemorySegment.ofAddress(42).reinterpret(arena, seg -> {
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throw iae;
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});
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}
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for (int i = 10 ; i < 20 ; i++) {
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MemorySegment.ofAddress(42).reinterpret(100, arena, seg -> {
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throw iae;
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});
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}
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MemorySegment.ofAddress(42).reinterpret(arena, seg -> counter.incrementAndGet());
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} catch (RuntimeException ex) {
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thrown = ex;
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}
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assertEquals(thrown, iae);
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assertEquals(counter.get(), 1);
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assertEquals(thrown.getSuppressed().length, 0);
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}
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@DataProvider(name = "badSizeAndAlignments")
|
|
public Object[][] sizesAndAlignments() {
|
|
return new Object[][] {
|
|
{ -1, 8 },
|
|
{ 1, 15 },
|
|
{ 1, -15 }
|
|
};
|
|
}
|
|
|
|
@DataProvider(name = "heapFactories")
|
|
public Object[][] heapFactories() {
|
|
return new Object[][] {
|
|
{ (IntFunction<MemorySegment>) size -> MemorySegment.ofArray(new byte[size]), 1 },
|
|
{ (IntFunction<MemorySegment>) size -> MemorySegment.ofArray(new char[size]), 2 },
|
|
{ (IntFunction<MemorySegment>) size -> MemorySegment.ofArray(new short[size]), 2 },
|
|
{ (IntFunction<MemorySegment>) size -> MemorySegment.ofArray(new int[size]), 4 },
|
|
{ (IntFunction<MemorySegment>) size -> MemorySegment.ofArray(new float[size]), 4 },
|
|
{ (IntFunction<MemorySegment>) size -> MemorySegment.ofArray(new long[size]), 8 },
|
|
{ (IntFunction<MemorySegment>) size -> MemorySegment.ofArray(new double[size]), 8 }
|
|
};
|
|
}
|
|
}
|