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/*
* Copyright (c) 2022, 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
* @modules java.base/jdk.internal.foreign
* @run testng TestLinker
* @run testng/othervm/policy=security.policy
* -Djava.security.manager=default TestLinker
*/
import jdk.internal.foreign.CABI;
import org.testng.annotations.DataProvider;
import org.testng.annotations.Test;
import java.lang.foreign.FunctionDescriptor;
import java.lang.foreign.Linker;
import java.lang.foreign.MemoryLayout;
import java.lang.foreign.ValueLayout;
import java.lang.invoke.MethodHandle;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import static java.lang.foreign.MemoryLayout.*;
import static java.lang.foreign.ValueLayout.JAVA_CHAR;
import static java.lang.foreign.ValueLayout.JAVA_SHORT;
import static org.testng.Assert.assertNotNull;
import static org.testng.Assert.assertSame;
import static org.testng.Assert.assertNotSame;
import static org.testng.Assert.assertTrue;
public class TestLinker extends NativeTestHelper {
static final boolean IS_FALLBACK_LINKER = CABI.current() == CABI.FALLBACK;
record LinkRequest(FunctionDescriptor descriptor, Linker.Option... options) {}
@Test(dataProvider = "notSameCases")
public void testLinkerOptionsCache(LinkRequest l1, LinkRequest l2) {
Linker linker = Linker.nativeLinker();
MethodHandle mh1 = linker.downcallHandle(l1.descriptor(), l1.options());
MethodHandle mh2 = linker.downcallHandle(l2.descriptor(), l2.options());
// assert that these are 2 distinct link request. No caching allowed
assertNotSame(mh1, mh2);
}
@DataProvider
public static Object[][] notSameCases() {
FunctionDescriptor fd_II_V = FunctionDescriptor.ofVoid(C_INT, C_INT);
return new Object[][]{
{new LinkRequest(fd_II_V), new LinkRequest(fd_II_V, Linker.Option.firstVariadicArg(1))},
{new LinkRequest(FunctionDescriptor.ofVoid(JAVA_SHORT)), new LinkRequest(FunctionDescriptor.ofVoid(JAVA_CHAR))},
{new LinkRequest(FunctionDescriptor.ofVoid(JAVA_SHORT)), new LinkRequest(FunctionDescriptor.ofVoid(JAVA_CHAR))},
};
}
@Test(dataProvider = "namedDescriptors")
public void testNamedLinkerCache(FunctionDescriptor f1, FunctionDescriptor f2) {
Linker linker = Linker.nativeLinker();
MethodHandle mh1 = linker.downcallHandle(f1);
MethodHandle mh2 = linker.downcallHandle(f2);
// assert that these are the same link request, even though layout names differ
assertSame(mh1, mh2);
}
@DataProvider
public static Object[][] namedDescriptors() {
List<Object[]> cases = new ArrayList<>(Arrays.asList(new Object[][]{
{ FunctionDescriptor.ofVoid(C_INT),
FunctionDescriptor.ofVoid(C_INT.withName("x")) },
{ FunctionDescriptor.ofVoid(structLayout(C_INT)),
FunctionDescriptor.ofVoid(structLayout(C_INT).withName("x")) },
{ FunctionDescriptor.ofVoid(structLayout(C_INT)),
FunctionDescriptor.ofVoid(structLayout(C_INT.withName("x"))) },
{ FunctionDescriptor.ofVoid(structLayout(sequenceLayout(1, C_INT))),
FunctionDescriptor.ofVoid(structLayout(sequenceLayout(1, C_INT).withName("x"))) },
{ FunctionDescriptor.ofVoid(structLayout(sequenceLayout(1, C_INT))),
FunctionDescriptor.ofVoid(structLayout(sequenceLayout(1, C_INT.withName("x")))) },
{ FunctionDescriptor.ofVoid(C_POINTER),
FunctionDescriptor.ofVoid(C_POINTER.withName("x")) },
{ FunctionDescriptor.ofVoid(C_POINTER.withTargetLayout(C_INT)),
FunctionDescriptor.ofVoid(C_POINTER.withTargetLayout(C_INT.withName("x"))) },
{ FunctionDescriptor.ofVoid(C_POINTER.withTargetLayout(C_INT)),
FunctionDescriptor.ofVoid(C_POINTER.withName("x").withTargetLayout(C_INT.withName("x"))) },
}));
if (!IS_FALLBACK_LINKER) {
cases.add(new Object[]{ FunctionDescriptor.ofVoid(unionLayout(C_INT)),
FunctionDescriptor.ofVoid(unionLayout(C_INT).withName("x")) });
cases.add(new Object[]{ FunctionDescriptor.ofVoid(unionLayout(C_INT)),
FunctionDescriptor.ofVoid(unionLayout(C_INT.withName("x"))) });
}
if (C_LONG_LONG.byteAlignment() == 8) {
cases.add(new Object[]{ FunctionDescriptor.ofVoid(structLayout(C_INT, paddingLayout(4), C_LONG_LONG)),
FunctionDescriptor.ofVoid(structLayout(C_INT, paddingLayout(4), C_LONG_LONG.withName("x"))) });
cases.add(new Object[]{ FunctionDescriptor.ofVoid(structLayout(C_INT, paddingLayout(4), C_LONG_LONG)),
FunctionDescriptor.ofVoid(structLayout(C_INT, paddingLayout(4).withName("x"), C_LONG_LONG)) });
}
return cases.toArray(Object[][]::new);
}
@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
}
@Test(dataProvider = "canonicalTypeNames")
public void testCanonicalLayouts(String typeName) {
MemoryLayout layout = LINKER.canonicalLayouts().get(typeName);
assertNotNull(layout);
assertTrue(layout instanceof ValueLayout);
}
@DataProvider
public static Object[][] canonicalTypeNames() {
return new Object[][]{
{ "bool" },
{ "char" },
{ "short" },
{ "int" },
{ "long" },
{ "long long" },
{ "float" },
{ "double" },
{ "void*" },
{ "size_t" },
{ "wchar_t" },
};
}
@Test(expectedExceptions=UnsupportedOperationException.class)
public void testCanonicalLayoutsUnmodifiable() {
LINKER.canonicalLayouts().put("asdf", C_INT);
}
}
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