Mercurial > hg > truffle
view graal/com.oracle.graal.hotspot/src/com/oracle/graal/hotspot/replacements/ThreadSubstitutions.java @ 9793:b4f12c603be5
added support for the runtime to specify for each foreign call whether it is re-executable and what memory locations it kills
author | Doug Simon <doug.simon@oracle.com> |
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date | Wed, 22 May 2013 16:27:25 +0200 |
parents | 9c5078e16fd9 |
children | 7b5269608cb3 |
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/* * Copyright (c) 2012, 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 com.oracle.graal.hotspot.replacements; import static com.oracle.graal.api.meta.LocationIdentity.*; import static com.oracle.graal.hotspot.replacements.HotSpotReplacementsUtil.*; import java.lang.reflect.*; import com.oracle.graal.api.meta.*; import com.oracle.graal.api.replacements.*; import com.oracle.graal.graph.*; import com.oracle.graal.graph.Node.ConstantNodeParameter; import com.oracle.graal.graph.Node.NodeIntrinsic; import com.oracle.graal.hotspot.nodes.*; import com.oracle.graal.nodes.extended.*; import com.oracle.graal.word.*; /** * Substitutions for {@link java.lang.Thread} methods. */ @ClassSubstitution(java.lang.Thread.class) public class ThreadSubstitutions { @MethodSubstitution public static Thread currentThread() { return (Thread) CurrentJavaThreadNode.get().readObject(threadObjectOffset(), LocationIdentity.FINAL_LOCATION); } @MethodSubstitution(isStatic = false) public static boolean isInterrupted(final Thread thisObject, boolean clearInterrupted) { Word javaThread = CurrentJavaThreadNode.get(); Object thread = javaThread.readObject(threadObjectOffset(), LocationIdentity.FINAL_LOCATION); if (thisObject == thread) { Word osThread = javaThread.readWord(osThreadOffset(), LocationIdentity.FINAL_LOCATION); boolean interrupted = osThread.readInt(osThreadInterruptedOffset(), ANY_LOCATION) != 0; if (!interrupted || !clearInterrupted) { return interrupted; } } return threadIsInterruptedStub(THREAD_IS_INTERRUPTED, thisObject, clearInterrupted); } public static final ForeignCallDescriptor THREAD_IS_INTERRUPTED = new ForeignCallDescriptor("thread_is_interrupted", boolean.class, Object.class, boolean.class); /** * @param descriptor */ @NodeIntrinsic(ForeignCallNode.class) private static boolean threadIsInterruptedStub(@ConstantNodeParameter ForeignCallDescriptor descriptor, Thread thread, boolean clearIsInterrupted) { try { Method isInterrupted = Thread.class.getDeclaredMethod("isInterrupted", boolean.class); isInterrupted.setAccessible(true); return (Boolean) isInterrupted.invoke(thread, clearIsInterrupted); } catch (Exception e) { throw new GraalInternalError(e); } } }