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/*
* Copyright (c) 2021, 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
* @requires jdk.foreign.linker != "UNSUPPORTED"
* @library ../
* @run testng/othervm
* --enable-native-access=ALL-UNNAMED
* TestVirtualCalls
*/
import java.lang.foreign.Linker;
import java.lang.foreign.FunctionDescriptor;
import java.lang.foreign.MemorySegment;
import java.lang.invoke.MethodHandle;
import org.testng.annotations.*;
import static org.testng.Assert.assertEquals;
public class TestVirtualCalls extends NativeTestHelper {
static final Linker abi = Linker.nativeLinker();
static final MethodHandle func;
static final MemorySegment funcA;
static final MemorySegment funcB;
static final MemorySegment funcC;
static {
func = abi.downcallHandle(
FunctionDescriptor.of(C_INT));
System.loadLibrary("Virtual");
funcA = findNativeOrThrow("funcA");
funcB = findNativeOrThrow("funcB");
funcC = findNativeOrThrow("funcC");
}
@Test
public void testVirtualCalls() throws Throwable {
assertEquals((int) func.invokeExact(funcA), 1);
assertEquals((int) func.invokeExact(funcB), 2);
assertEquals((int) func.invokeExact(funcC), 3);
}
@Test(expectedExceptions = NullPointerException.class)
public void testNullTarget() throws Throwable {
int x = (int) func.invokeExact((MemorySegment)null);
}
}
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