65 lines
2.8 KiB
Java
65 lines
2.8 KiB
Java
/*
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* Copyright (c) 2020, 2022, 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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import java.lang.foreign.Addressable;
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import java.lang.foreign.Linker;
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import java.lang.foreign.FunctionDescriptor;
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import java.lang.foreign.MemoryLayout;
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import java.lang.foreign.SegmentAllocator;
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import java.lang.invoke.MethodHandle;
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import java.util.List;
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import java.util.function.Consumer;
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import java.util.stream.Stream;
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public class TestDowncallBase extends CallGeneratorHelper {
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static Linker LINKER = Linker.nativeLinker();
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Object doCall(Addressable symbol, SegmentAllocator allocator, FunctionDescriptor descriptor, Object[] args) throws Throwable {
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MethodHandle mh = downcallHandle(LINKER, symbol, allocator, 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 FunctionDescriptor function(Ret ret, List<ParamType> params, List<StructFieldType> fields, List<MemoryLayout> prefix) {
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List<MemoryLayout> pLayouts = params.stream().map(p -> p.layout(fields)).toList();
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MemoryLayout[] paramLayouts = Stream.concat(prefix.stream(), pLayouts.stream()).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[prefix.size()], paramLayouts);
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}
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static Object[] makeArgs(List<ParamType> params, List<StructFieldType> fields, List<Consumer<Object>> checks, List<MemoryLayout> prefix) throws ReflectiveOperationException {
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Object[] args = new Object[prefix.size() + params.size()];
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int argNum = 0;
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for (MemoryLayout layout : prefix) {
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args[argNum++] = makeArg(layout, null, false);
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}
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for (int i = 0 ; i < params.size() ; i++) {
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args[argNum++] = 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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