/*
* Copyright ( c ) 2020 , 2022 , Oracle and / or its affiliates . All rights reserved .
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER .
*
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* under the terms of the GNU General Public License version 2 only , as
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*
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* 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 ) .
*
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/*
* @ test
* @ enablePreview
* @ modules java . base / jdk . internal . foreign
* @ run testng TestLayoutEquality
*/
import java.lang.foreign.MemoryLayout;
import java.lang.foreign.ValueLayout;
import jdk.internal.foreign.PlatformLayouts;
import org.testng.annotations.DataProvider;
import org.testng.annotations.Test;
import java.lang.reflect.Field;
import java.util.ArrayList;
import java.util.List;
import static org.testng.Assert .*;
public class TestLayoutEquality {
@Test(dataProvider = "layoutConstants" )
public void testReconstructedEquality(ValueLayout layout) {
ValueLayout newLayout = MemoryLayout.valueLayout(layout.carrier(), layout.order());
newLayout = newLayout.withBitAlignment(layout.bitAlignment());
if (layout instanceof ValueLayout.OfAddress addressLayout && addressLayout.isUnbounded()) {
newLayout = ((ValueLayout.OfAddress)newLayout).asUnbounded();
}
// properties should be equal
assertEquals(newLayout.bitSize(), layout.bitSize());
assertEquals(newLayout.bitAlignment(), layout.bitAlignment());
assertEquals(newLayout.name(), layout.name());
// layouts should be equals
assertEquals(newLayout, layout);
}
@DataProvider
public static Object[][] layoutConstants() throws ReflectiveOperationException {
List<ValueLayout> testValues = new ArrayList<>();
addLayoutConstants(testValues, PlatformLayouts.SysV.class );
addLayoutConstants(testValues, PlatformLayouts.Win64.class );
addLayoutConstants(testValues, PlatformLayouts.AArch64.class );
return testValues.stream().map(e -> new Object[]{ e }).toArray(Object[][]::new );
}
private static void addLayoutConstants(List<ValueLayout> testValues, Class <?> cls) throws ReflectiveOperationException {
for (Field f : cls.getFields()) {
if (f.getName().startsWith("C_" ))
testValues.add((ValueLayout) f.get(null ));
}
}
}
Messung V0.5 in Prozent C=93 H=92 G=92
¤ Dauer der Verarbeitung: 0.11 Sekunden
(vorverarbeitet am 2026-06-10)
¤
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