81 lines
3.6 KiB
Java
81 lines
3.6 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.*;
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import java.lang.foreign.Arena;
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import java.util.List;
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import java.util.concurrent.atomic.AtomicReference;
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import java.util.function.Consumer;
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import java.util.function.Function;
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import java.util.stream.Collectors;
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import java.util.stream.Stream;
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public abstract class TestUpcallBase extends CallGeneratorHelper {
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static FunctionDescriptor function(Ret ret, List<ParamType> params, List<StructFieldType> fields) {
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return function(ret, params, fields, List.of());
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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> paramLayouts = params.stream().map(p -> p.layout(fields)).collect(Collectors.toList());
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paramLayouts.add(C_POINTER); // the callback
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MemoryLayout[] layouts = Stream.concat(prefix.stream(), paramLayouts.stream()).toArray(MemoryLayout[]::new);
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return ret == Ret.VOID ?
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FunctionDescriptor.ofVoid(layouts) :
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FunctionDescriptor.of(layouts[prefix.size()], layouts);
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}
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static Object[] makeArgs(AtomicReference<Object[]> capturedArgs, Arena arena, FunctionDescriptor downcallDescriptor,
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List<Consumer<Object>> checks, List<Consumer<Object>> argChecks, int numPrefixArgs) {
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MemoryLayout[] upcallArgLayouts = downcallDescriptor.argumentLayouts()
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.subList(0, downcallDescriptor.argumentLayouts().size() - 1) // drop CB layout
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.toArray(MemoryLayout[]::new);
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TestValue[] args = new TestValue[upcallArgLayouts.length];
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for (int i = 0; i < args.length; i++) {
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MemoryLayout layout = upcallArgLayouts[i];
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TestValue testValue = genTestValue(layout, arena);
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args[i] = testValue;
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if (i >= numPrefixArgs) {
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argChecks.add(testValue.check());
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}
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}
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int returnedArgIdx;
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FunctionDescriptor upcallDescriptor;
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if (downcallDescriptor.returnLayout().isPresent()) {
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returnedArgIdx = numPrefixArgs;
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upcallDescriptor = FunctionDescriptor.of(downcallDescriptor.returnLayout().get(), upcallArgLayouts);
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checks.add(args[returnedArgIdx].check());
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} else {
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returnedArgIdx = -1;
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upcallDescriptor = FunctionDescriptor.ofVoid(upcallArgLayouts);
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}
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MemorySegment callback = makeArgSaverCB(upcallDescriptor, arena, capturedArgs, returnedArgIdx);
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return Stream.concat(Stream.of(args).map(TestValue::value), Stream.of(callback)).toArray();
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}
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}
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