Mercurial > hg > graal-compiler
view graal/com.oracle.graal.hotspot/src/com/oracle/graal/hotspot/nodes/CurrentJavaThreadNode.java @ 18998:ec0733b5a90a
Allow final modifier on node subclasses and start adding the modifier to leaf classes.
author | Thomas Wuerthinger <thomas.wuerthinger@oracle.com> |
---|---|
date | Wed, 28 Jan 2015 02:34:14 +0100 |
parents | f57d86eb036f |
children | 7e2c87dae93e |
line wrap: on
line source
/* * Copyright (c) 2012, 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 com.oracle.graal.hotspot.nodes; import static com.oracle.graal.hotspot.HotSpotGraalRuntime.*; import com.oracle.graal.api.code.*; import com.oracle.graal.api.meta.*; import com.oracle.graal.compiler.common.*; import com.oracle.graal.compiler.common.type.*; import com.oracle.graal.hotspot.*; import com.oracle.graal.nodeinfo.*; import com.oracle.graal.nodes.calc.*; import com.oracle.graal.nodes.spi.*; import com.oracle.graal.word.*; /** * Gets the address of the C++ JavaThread object for the current thread. */ @NodeInfo public final class CurrentJavaThreadNode extends FloatingNode implements LIRLowerable { protected LIRKind wordKind; public CurrentJavaThreadNode(Kind kind) { super(StampFactory.forKind(kind)); this.wordKind = LIRKind.value(kind); } @Override public void generate(NodeLIRBuilderTool gen) { Register rawThread = ((HotSpotLIRGenerator) gen.getLIRGeneratorTool()).getProviders().getRegisters().getThreadRegister(); gen.setResult(this, rawThread.asValue(wordKind)); } private static int eetopOffset() { try { return (int) UnsafeAccess.unsafe.objectFieldOffset(Thread.class.getDeclaredField("eetop")); } catch (Exception e) { throw new GraalInternalError(e); } } @NodeIntrinsic(setStampFromReturnType = true) public static Word get(@SuppressWarnings("unused") @ConstantNodeParameter Kind kind) { return Word.unsigned(unsafeReadWord(Thread.currentThread(), eetopOffset())); } }