100 lines
3.3 KiB
Java
100 lines
3.3 KiB
Java
/*
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* Copyright (c) 2015, 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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package compiler.calls.common;
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import java.lang.invoke.CallSite;
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import java.lang.invoke.ConstantCallSite;
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import java.lang.invoke.MethodHandles;
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import java.lang.invoke.MethodType;
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/**
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* A test class checking InvokeDynamic instruction.
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* This is not quite "ready-to-use" class, since javac can't generate indy
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* directly(only as part of lambda init) so, this class bytecode should be
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* patched with method "caller" which uses indy. Other methods can be written in
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* java for easier support and readability.
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*/
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public class InvokeDynamic extends CallsBase {
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private static final Object LOCK = new Object();
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public static void main(String args[]) {
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new InvokeDynamic().runTest(args);
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}
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/**
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* Caller method to call "callee" method. Must be overwritten with InvokeDynamicPatcher
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*/
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@Override
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public void caller() {
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}
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/**
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* A bootstrap method for invokedynamic
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* @param lookup a lookup object
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* @param methodName methodName
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* @param type method type
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* @return CallSite for method
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*/
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public static CallSite bootstrapMethod(MethodHandles.Lookup lookup,
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String methodName, MethodType type) throws IllegalAccessException,
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NoSuchMethodException {
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MethodType mtype = MethodType.methodType(boolean.class,
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new Class<?>[]{int.class, long.class, float.class,
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double.class, String.class});
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return new ConstantCallSite(lookup.findVirtual(lookup.lookupClass(),
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methodName, mtype));
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}
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/**
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* A callee method, assumed to be called by "caller"
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*/
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public boolean callee(int param1, long param2, float param3, double param4,
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String param5) {
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calleeVisited = true;
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CallsBase.checkValues(param1, param2, param3, param4, param5);
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return true;
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}
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/**
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* A native callee method, assumed to be called by "caller"
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*/
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public native boolean calleeNative(int param1, long param2, float param3,
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double param4, String param5);
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/**
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* Returns object to lock execution on
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* @return lock object
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*/
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@Override
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protected Object getLockObject() {
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return LOCK;
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}
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@Override
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protected void callerNative() {
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throw new Error("No native call for invokedynamic");
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}
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}
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