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/*
* Copyright (c) 2019, 2022, 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
* @modules java.base/jdk.internal.misc
* @run testng TestValueLayouts
*/
import org.testng.annotations.*;
import java.lang.foreign.*;
import java.nio.ByteOrder;
import jdk.internal.misc.Unsafe;
import static java.lang.foreign.ValueLayout.*;
import static org.testng.Assert.*;
public class TestValueLayouts {
@Test
public void testByte() {
testAligned(JAVA_BYTE, byte.class, Byte.BYTES);
}
@Test
public void testBoolean() {
testAligned(JAVA_BOOLEAN, boolean.class, Byte.BYTES);
}
@Test
public void testShort() {
testAligned(JAVA_SHORT, short.class, Short.BYTES);
}
@Test
public void testShortUnaligned() {
testUnaligned(JAVA_SHORT_UNALIGNED, short.class, Short.BYTES);
}
@Test
public void testInt() {
testAligned(JAVA_INT, int.class, Integer.BYTES);
}
@Test
public void testIntUnaligned() {
testUnaligned(JAVA_INT_UNALIGNED, int.class, Integer.BYTES);
}
@Test
public void testLong() {
testAligned(JAVA_LONG, long.class, Long.BYTES, ADDRESS.byteSize());
}
@Test
public void testLongUnaligned() {
testUnaligned(JAVA_LONG_UNALIGNED, long.class, Long.BYTES);
}
@Test
public void testFloat() {
testAligned(JAVA_FLOAT, float.class, Float.BYTES);
}
@Test
public void testFloatUnaligned() {
testUnaligned(JAVA_FLOAT_UNALIGNED, float.class, Float.BYTES);
}
@Test
public void testDouble() {
testAligned(JAVA_DOUBLE, double.class, Double.BYTES, ADDRESS.byteSize());
}
@Test
public void testDoubleUnaligned() {
testUnaligned(JAVA_DOUBLE_UNALIGNED, double.class, Double.BYTES);
}
@Test
public void testChar() {
testAligned(JAVA_CHAR, char.class, Character.BYTES);
}
@Test
public void testCharUnaligned() {
testUnaligned(JAVA_CHAR_UNALIGNED, char.class, Character.BYTES);
}
@Test
public void testAddress() {
testAligned(ADDRESS, MemorySegment.class, Unsafe.ADDRESS_SIZE);
}
@Test
public void testAddressUnaligned() {
testUnaligned(ADDRESS_UNALIGNED, MemorySegment.class, Unsafe.ADDRESS_SIZE);
}
void testAligned(ValueLayout layout,
Class<?> carrier,
long byteSize) {
test(layout, carrier, byteSize, byteSize);
}
void testAligned(ValueLayout layout,
Class<?> carrier,
long byteSize,
long byteAlignment) {
test(layout, carrier, byteSize, byteAlignment);
}
void testUnaligned(ValueLayout layout,
Class<?> carrier,
long byteSize) {
test(layout, carrier, byteSize, Byte.BYTES);
}
void test(ValueLayout layout,
Class<?> carrier,
long byteSize,
long byteAlignment) {
assertEquals(layout.carrier(), carrier);
assertEquals(layout.byteSize(), byteSize);
assertEquals(layout.order(), ByteOrder.nativeOrder());
assertEquals(layout.byteAlignment(), byteAlignment);
assertTrue(layout.name().isEmpty());
}
}
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