Mercurial > hg > truffle
view test/compiler/types/correctness/execution/MethodHandleDelegate.java @ 19128:04a07ceab00d
GraphBuilderPlugins for GraalDirectives.
author | Roland Schatz <roland.schatz@oracle.com> |
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date | Wed, 04 Feb 2015 15:08:31 +0100 |
parents | 534fbe3d90f0 |
children |
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/* * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation. * * This code is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. */ package execution; import hierarchies.TypeHierarchy; import scenarios.Scenario; import java.lang.invoke.MethodHandle; import java.lang.invoke.MethodHandles; import java.lang.invoke.MethodType; /** * Executes test scenario using {@link MethodHandle#invoke(Object...)}. * Delegates execution to the given {@link Execution} by creating * new test scenario, see {@link Scenario} */ public class MethodHandleDelegate<T extends TypeHierarchy.I, R> implements Execution<T, R> { private final Execution<T, R> delegate; public MethodHandleDelegate(Execution<T, R> delegate) { this.delegate = delegate; } @Override public void execute(Scenario<T, R> scenario) { delegate.execute(new MHScenario<T, R>(scenario)); } @Override public String getName() { return "MethodHandleDelegate # " + delegate.getName(); } private static class MHScenario<T extends TypeHierarchy.I, R> extends Scenario<T, R> { private final Scenario<T, R> scenario; private static final MethodHandle METHOD_HANDLE_RUN; static { MethodHandles.Lookup lookup = MethodHandles.lookup(); MethodType methodType = MethodType.methodType(Object.class, TypeHierarchy.I.class); try { METHOD_HANDLE_RUN = lookup.findVirtual(Scenario.class, "run", methodType); } catch (NoSuchMethodException | IllegalAccessException e) { System.err.println("Failed to get target method run() with " + e); e.printStackTrace(); throw new RuntimeException(e); } } /** * Constructor * * @param scenario test scenario to be executed */ private MHScenario(Scenario<T, R> scenario) { super("MethodHandle::" + scenario.getName(), scenario.profilingType, scenario.hierarchy); this.scenario = scenario; } /** * Runs {@link Scenario#run(T)} with {@link MethodHandle#invoke(Object...)} * * @param t subject of the test * @return result of the underlying {@link Scenario#run(T)} invocation */ @SuppressWarnings("unchecked") @Override public R run(T t) { try { return (R) METHOD_HANDLE_RUN.invoke(scenario, t); } catch (Throwable thr) { System.err.println(scenario.getName() + " failed to invoke target method run() with " + thr); throw new RuntimeException("Invocation failed", thr); } } @Override public void check(R r, T t) { scenario.check(r, t); } } }