Mercurial > hg > truffle
view test/compiler/types/correctness/execution/MethodHandleDelegate.java @ 20304:a22acf6d7598
8048112: G1 Full GC needs to support the case when the very first region is not available
Summary: Refactor preparation for compaction during Full GC so that it lazily initializes the first compaction point. This also avoids problems later when the first region may not be committed. Also reviewed by K. Barrett.
Reviewed-by: brutisso
author | tschatzl |
---|---|
date | Mon, 21 Jul 2014 10:00:31 +0200 |
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); } } }