80 lines
2.9 KiB
Java
80 lines
2.9 KiB
Java
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/*
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* Copyright (c) 2021, 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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import jdk.incubator.foreign.CLinker;
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import jdk.incubator.foreign.FunctionDescriptor;
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import jdk.incubator.foreign.MemoryAddress;
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import jdk.incubator.foreign.ResourceScope;
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import jdk.incubator.foreign.SymbolLookup;
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import java.lang.invoke.MethodHandle;
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import java.lang.invoke.MethodHandles;
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import java.lang.invoke.MethodType;
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import java.security.Permission;
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import static jdk.incubator.foreign.CLinker.C_POINTER;
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public class ThrowingUpcall {
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private static final MethodHandle downcall;
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public static final MethodHandle MH_throwException;
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static {
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System.loadLibrary("TestUpcall");
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SymbolLookup lookup = SymbolLookup.loaderLookup();
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downcall = CLinker.getInstance().downcallHandle(
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lookup.lookup("f0_V__").orElseThrow(),
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MethodType.methodType(void.class, MemoryAddress.class),
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FunctionDescriptor.ofVoid(C_POINTER)
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);
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try {
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MH_throwException = MethodHandles.lookup().findStatic(ThrowingUpcall.class, "throwException",
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MethodType.methodType(void.class));
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} catch (ReflectiveOperationException e) {
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throw new ExceptionInInitializerError(e);
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}
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}
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public static void throwException() throws Throwable {
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throw new Throwable("Testing upcall exceptions");
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}
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public static void main(String[] args) throws Throwable {
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test();
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}
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public static void test() throws Throwable {
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MethodHandle handle = MH_throwException;
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MethodHandle invoker = MethodHandles.exactInvoker(MethodType.methodType(void.class));
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handle = MethodHandles.insertArguments(invoker, 0, handle);
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try (ResourceScope scope = ResourceScope.newConfinedScope()) {
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MemoryAddress stub = CLinker.getInstance().upcallStub(handle, FunctionDescriptor.ofVoid(), scope);
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downcall.invokeExact(stub); // should call Shutdown.exit(1);
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}
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}
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}
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