142 lines
6.3 KiB
Java
142 lines
6.3 KiB
Java
/*
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* Copyright (c) 2020, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*
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*/
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/*
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* @test
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* @requires ((os.arch == "amd64" | os.arch == "x86_64") & sun.arch.data.model == "64") | os.arch == "aarch64"
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* @modules jdk.incubator.foreign/jdk.internal.foreign
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* @build NativeTestHelper CallGeneratorHelper TestDowncall
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*
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* @run testng/othervm -XX:+IgnoreUnrecognizedVMOptions -XX:-VerifyDependencies
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* --enable-native-access=ALL-UNNAMED -Dgenerator.sample.factor=17
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* TestDowncall
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*/
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import jdk.incubator.foreign.CLinker;
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import jdk.incubator.foreign.FunctionDescriptor;
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import jdk.incubator.foreign.SymbolLookup;
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import jdk.incubator.foreign.MemoryAddress;
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import jdk.incubator.foreign.MemoryLayout;
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import java.lang.invoke.MethodHandle;
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import java.lang.invoke.MethodType;
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import java.util.ArrayList;
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import java.util.List;
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import java.util.function.Consumer;
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import jdk.incubator.foreign.MemorySegment;
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import jdk.incubator.foreign.SegmentAllocator;
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import org.testng.annotations.*;
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import static org.testng.Assert.*;
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public class TestDowncall extends CallGeneratorHelper {
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static CLinker abi = CLinker.getInstance();
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static {
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System.loadLibrary("TestDowncall");
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}
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static final SymbolLookup LOOKUP = SymbolLookup.loaderLookup();
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@Test(dataProvider="functions", dataProviderClass=CallGeneratorHelper.class)
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public void testDowncall(int count, String fName, Ret ret, List<ParamType> paramTypes, List<StructFieldType> fields) throws Throwable {
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List<Consumer<Object>> checks = new ArrayList<>();
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MemoryAddress addr = LOOKUP.lookup(fName).get();
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MethodType mt = methodType(ret, paramTypes, fields);
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FunctionDescriptor descriptor = function(ret, paramTypes, fields);
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Object[] args = makeArgs(paramTypes, fields, checks);
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try (NativeScope scope = new NativeScope()) {
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boolean needsScope = mt.returnType().equals(MemorySegment.class);
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Object res = doCall(addr, scope, mt, descriptor, args);
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if (ret == Ret.NON_VOID) {
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checks.forEach(c -> c.accept(res));
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if (needsScope) {
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// check that return struct has indeed been allocated in the native scope
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assertEquals(((MemorySegment) res).scope(), scope.scope());
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assertEquals(scope.allocatedBytes(), descriptor.returnLayout().get().byteSize());
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} else {
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// if here, there should be no allocation through the scope!
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assertEquals(scope.allocatedBytes(), 0L);
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}
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} else {
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// if here, there should be no allocation through the scope!
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assertEquals(scope.allocatedBytes(), 0L);
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}
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}
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}
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@Test(dataProvider="functions", dataProviderClass=CallGeneratorHelper.class)
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public void testDowncallNoScope(int count, String fName, Ret ret, List<ParamType> paramTypes, List<StructFieldType> fields) throws Throwable {
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List<Consumer<Object>> checks = new ArrayList<>();
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MemoryAddress addr = LOOKUP.lookup(fName).get();
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MethodType mt = methodType(ret, paramTypes, fields);
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FunctionDescriptor descriptor = function(ret, paramTypes, fields);
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Object[] args = makeArgs(paramTypes, fields, checks);
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boolean needsScope = mt.returnType().equals(MemorySegment.class);
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Object res = doCall(addr, IMPLICIT_ALLOCATOR, mt, descriptor, args);
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if (ret == Ret.NON_VOID) {
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checks.forEach(c -> c.accept(res));
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if (needsScope) {
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// check that return struct has indeed been allocated in the default scope
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try {
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((MemorySegment)res).scope().close(); // should throw
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fail("Expected exception!");
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} catch (UnsupportedOperationException ex) {
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// ok
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}
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}
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}
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}
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Object doCall(MemoryAddress addr, SegmentAllocator allocator, MethodType type, FunctionDescriptor descriptor, Object[] args) throws Throwable {
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MethodHandle mh = abi.downcallHandle(addr, allocator, type, descriptor);
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Object res = mh.invokeWithArguments(args);
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return res;
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}
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static MethodType methodType(Ret ret, List<ParamType> params, List<StructFieldType> fields) {
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MethodType mt = ret == Ret.VOID ?
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MethodType.methodType(void.class) : MethodType.methodType(paramCarrier(params.get(0).layout(fields)));
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for (ParamType p : params) {
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mt = mt.appendParameterTypes(paramCarrier(p.layout(fields)));
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}
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return mt;
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}
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static FunctionDescriptor function(Ret ret, List<ParamType> params, List<StructFieldType> fields) {
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MemoryLayout[] paramLayouts = params.stream().map(p -> p.layout(fields)).toArray(MemoryLayout[]::new);
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return ret == Ret.VOID ?
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FunctionDescriptor.ofVoid(paramLayouts) :
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FunctionDescriptor.of(paramLayouts[0], paramLayouts);
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}
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static Object[] makeArgs(List<ParamType> params, List<StructFieldType> fields, List<Consumer<Object>> checks) throws ReflectiveOperationException {
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Object[] args = new Object[params.size()];
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for (int i = 0 ; i < params.size() ; i++) {
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args[i] = makeArg(params.get(i).layout(fields), checks, i == 0);
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}
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return args;
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}
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}
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