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/*
* Copyright (c) 2019, 2023, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*
*/
/*
* @test
* @enablePreview
* @run testng/othervm --enable-native-access=ALL-UNNAMED TestArrays
*/
import java.lang.foreign.*;
import java.lang.foreign.MemoryLayout.PathElement;
import java.lang.invoke.VarHandle;
import java.util.function.BiConsumer;
import java.util.function.BiFunction;
import java.util.function.Consumer;
import java.util.function.Function;
import org.testng.annotations.*;
import static java.lang.foreign.ValueLayout.JAVA_BYTE;
import static java.lang.foreign.ValueLayout.JAVA_CHAR;
import static java.lang.foreign.ValueLayout.JAVA_DOUBLE;
import static java.lang.foreign.ValueLayout.JAVA_FLOAT;
import static java.lang.foreign.ValueLayout.JAVA_INT;
import static java.lang.foreign.ValueLayout.JAVA_LONG;
import static java.lang.foreign.ValueLayout.JAVA_SHORT;
import static org.testng.Assert.*;
public class TestArrays {
static SequenceLayout bytes = MemoryLayout.sequenceLayout(100,
JAVA_BYTE
);
static SequenceLayout chars = MemoryLayout.sequenceLayout(100,
JAVA_CHAR
);
static SequenceLayout shorts = MemoryLayout.sequenceLayout(100,
JAVA_SHORT
);
static SequenceLayout ints = MemoryLayout.sequenceLayout(100,
JAVA_INT
);
static SequenceLayout floats = MemoryLayout.sequenceLayout(100,
JAVA_FLOAT
);
static SequenceLayout longs = MemoryLayout.sequenceLayout(100,
JAVA_LONG
);
static SequenceLayout doubles = MemoryLayout.sequenceLayout(100,
JAVA_DOUBLE
);
static VarHandle byteHandle = bytes.varHandle(PathElement.sequenceElement());
static VarHandle charHandle = chars.varHandle(PathElement.sequenceElement());
static VarHandle shortHandle = shorts.varHandle(PathElement.sequenceElement());
static VarHandle intHandle = ints.varHandle(PathElement.sequenceElement());
static VarHandle floatHandle = floats.varHandle(PathElement.sequenceElement());
static VarHandle longHandle = longs.varHandle(PathElement.sequenceElement());
static VarHandle doubleHandle = doubles.varHandle(PathElement.sequenceElement());
static void initBytes(MemorySegment base, SequenceLayout seq, BiConsumer<MemorySegment, Long> handleSetter) {
for (long i = 0; i < seq.elementCount() ; i++) {
handleSetter.accept(base, i);
}
}
static void checkBytes(MemorySegment base, SequenceLayout layout, Function<MemorySegment, Object> arrayFactory, BiFunction<MemorySegment, Long, Object> handleGetter) {
int nelems = (int)layout.elementCount();
Object arr = arrayFactory.apply(base);
for (int i = 0; i < nelems; i++) {
Object found = handleGetter.apply(base, (long) i);
Object expected = java.lang.reflect.Array.get(arr, i);
assertEquals(expected, found);
}
}
@Test(dataProvider = "arrays")
public void testArrays(Consumer<MemorySegment> init, Consumer<MemorySegment> checker, MemoryLayout layout) {
Arena scope = Arena.ofAuto();
MemorySegment segment = scope.allocate(layout);
init.accept(segment);
assertFalse(segment.isReadOnly());
checker.accept(segment);
}
@Test(dataProvider = "elemLayouts",
expectedExceptions = IllegalStateException.class)
public void testTooBigForArray(MemoryLayout layout, Function<MemorySegment, Object> arrayFactory) {
MemoryLayout seq = MemoryLayout.sequenceLayout((Integer.MAX_VALUE * layout.byteSize()) + 1, layout);
//do not really allocate here, as it's way too much memory
MemorySegment segment = MemorySegment.NULL.reinterpret(seq.byteSize());
arrayFactory.apply(segment);
}
@Test(dataProvider = "elemLayouts",
expectedExceptions = IllegalStateException.class)
public void testBadSize(MemoryLayout layout, Function<MemorySegment, Object> arrayFactory) {
if (layout.byteSize() == 1) throw new IllegalStateException(); //make it fail
try (Arena arena = Arena.ofConfined()) {
long byteSize = layout.byteSize() + 1;
long byteAlignment = layout.byteSize();
MemorySegment segment = arena.allocate(byteSize, byteAlignment);
arrayFactory.apply(segment);
}
}
@Test(dataProvider = "elemLayouts",
expectedExceptions = IllegalStateException.class)
public void testArrayFromClosedSegment(MemoryLayout layout, Function<MemorySegment, Object> arrayFactory) {
Arena arena = Arena.ofConfined();
MemorySegment segment = arena.allocate(layout);
arena.close();
arrayFactory.apply(segment);
}
@DataProvider(name = "arrays")
public Object[][] nativeAccessOps() {
Consumer<MemorySegment> byteInitializer =
(base) -> initBytes(base, bytes, (addr, pos) -> byteHandle.set(addr, pos, (byte)(long)pos));
Consumer<MemorySegment> charInitializer =
(base) -> initBytes(base, chars, (addr, pos) -> charHandle.set(addr, pos, (char)(long)pos));
Consumer<MemorySegment> shortInitializer =
(base) -> initBytes(base, shorts, (addr, pos) -> shortHandle.set(addr, pos, (short)(long)pos));
Consumer<MemorySegment> intInitializer =
(base) -> initBytes(base, ints, (addr, pos) -> intHandle.set(addr, pos, (int)(long)pos));
Consumer<MemorySegment> floatInitializer =
(base) -> initBytes(base, floats, (addr, pos) -> floatHandle.set(addr, pos, (float)(long)pos));
Consumer<MemorySegment> longInitializer =
(base) -> initBytes(base, longs, (addr, pos) -> longHandle.set(addr, pos, (long)pos));
Consumer<MemorySegment> doubleInitializer =
(base) -> initBytes(base, doubles, (addr, pos) -> doubleHandle.set(addr, pos, (double)(long)pos));
Consumer<MemorySegment> byteChecker =
(base) -> checkBytes(base, bytes, s -> s.toArray(JAVA_BYTE), (addr, pos) -> (byte)byteHandle.get(addr, pos));
Consumer<MemorySegment> shortChecker =
(base) -> checkBytes(base, shorts, s -> s.toArray(JAVA_SHORT), (addr, pos) -> (short)shortHandle.get(addr, pos));
Consumer<MemorySegment> charChecker =
(base) -> checkBytes(base, chars, s -> s.toArray(JAVA_CHAR), (addr, pos) -> (char)charHandle.get(addr, pos));
Consumer<MemorySegment> intChecker =
(base) -> checkBytes(base, ints, s -> s.toArray(JAVA_INT), (addr, pos) -> (int)intHandle.get(addr, pos));
Consumer<MemorySegment> floatChecker =
(base) -> checkBytes(base, floats, s -> s.toArray(JAVA_FLOAT), (addr, pos) -> (float)floatHandle.get(addr, pos));
Consumer<MemorySegment> longChecker =
(base) -> checkBytes(base, longs, s -> s.toArray(JAVA_LONG), (addr, pos) -> (long)longHandle.get(addr, pos));
Consumer<MemorySegment> doubleChecker =
(base) -> checkBytes(base, doubles, s -> s.toArray(JAVA_DOUBLE), (addr, pos) -> (double)doubleHandle.get(addr, pos));
return new Object[][]{
{byteInitializer, byteChecker, bytes},
{charInitializer, charChecker, chars},
{shortInitializer, shortChecker, shorts},
{intInitializer, intChecker, ints},
{floatInitializer, floatChecker, floats},
{longInitializer, longChecker, longs},
{doubleInitializer, doubleChecker, doubles}
};
}
@DataProvider(name = "elemLayouts")
public Object[][] elemLayouts() {
return new Object[][] {
{ JAVA_BYTE, (Function<MemorySegment, Object>)s -> s.toArray(JAVA_BYTE)},
{ JAVA_SHORT, (Function<MemorySegment, Object>) s -> s.toArray(JAVA_SHORT)},
{ JAVA_CHAR, (Function<MemorySegment, Object>) s -> s.toArray(JAVA_CHAR)},
{ JAVA_INT, (Function<MemorySegment, Object>)s -> s.toArray(JAVA_INT)},
{ JAVA_FLOAT, (Function<MemorySegment, Object>)s -> s.toArray(JAVA_FLOAT)},
{ JAVA_LONG, (Function<MemorySegment, Object>)s -> s.toArray(JAVA_LONG)},
{ JAVA_DOUBLE, (Function<MemorySegment, Object>)s -> s.toArray(JAVA_DOUBLE)}
};
}
}
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