/*
* Copyright ( c ) 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 .
*
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*/
/*
* @ test
* @ enablePreview
* @ requires os . arch = = " amd64 " | os . arch = = " x86_64 " | os . arch = = " aarch64 "
* @ run testng TestLinker
*/
import org.testng.annotations.DataProvider;
import org.testng.annotations.Test;
import java.lang.foreign.FunctionDescriptor;
import java.lang.foreign.Linker;
import java.lang.invoke.MethodHandle;
import static org.testng.Assert .assertNotSame;
public class TestLinker extends NativeTestHelper {
@Test
public void testLinkerOptionsCache() {
Linker linker = Linker.nativeLinker();
FunctionDescriptor descriptor = FunctionDescriptor.ofVoid(C_INT, C_INT);
MethodHandle mh1 = linker.downcallHandle(descriptor);
MethodHandle mh2 = linker.downcallHandle(descriptor, Linker.Option.firstVariadicArg(1 ));
// assert that these are 2 distinct link request. No caching allowed
assertNotSame(mh1, mh2);
}
@DataProvider
public static Object[][] invalidIndexCases() {
return new Object[][]{
{ -1 , },
{ 42 , },
};
}
@Test(dataProvider = "invalidIndexCases" ,
expectedExceptions = IllegalArgumentException.class ,
expectedExceptionsMessageRegExp = ".*not in bounds for descriptor.*" )
public void testInvalidOption(int invalidIndex) {
Linker.Option option = Linker.Option.firstVariadicArg(invalidIndex);
FunctionDescriptor desc = FunctionDescriptor.ofVoid();
Linker.nativeLinker().downcallHandle(desc, option); // throws
}
@Test(expectedExceptions = IllegalArgumentException.class ,
expectedExceptionsMessageRegExp = ".*Unknown name.*" )
public void testInvalidPreservedValueName() {
Linker.Option.captureCallState("foo" ); // throws
}
}
Messung V0.5 in Prozent C=94 H=92 G=92
¤ Dauer der Verarbeitung: 0.10 Sekunden
(vorverarbeitet am 2026-06-10)
¤
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