Mercurial > hg > truffle
view graal/com.oracle.graal.nodes/src/com/oracle/graal/nodes/java/RegisterFinalizerNode.java @ 9739:4cd4926ec683
rename: RuntimeCallTarget -> ForeignCallLinkage
author | Doug Simon <doug.simon@oracle.com> |
---|---|
date | Thu, 16 May 2013 17:12:17 +0200 |
parents | 34c892fdfb6d |
children | b27184f5f66b |
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/* * Copyright (c) 2011, 2011, 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.nodes.java; import com.oracle.graal.api.code.*; import com.oracle.graal.api.meta.*; import com.oracle.graal.nodes.*; import com.oracle.graal.nodes.spi.*; import com.oracle.graal.nodes.type.*; /** * This node is used to perform the finalizer registration at the end of the java.lang.Object * constructor. */ public final class RegisterFinalizerNode extends AbstractStateSplit implements StateSplit, Canonicalizable, LIRLowerable, Virtualizable, DeoptimizingNode { public static final ForeignCallDescriptor REGISTER_FINALIZER = new ForeignCallDescriptor("registerFinalizer", void.class, Object.class); @Input private FrameState deoptState; @Input private ValueNode object; public ValueNode object() { return object; } public RegisterFinalizerNode(ValueNode object) { super(StampFactory.forVoid()); this.object = object; } @Override public void generate(LIRGeneratorTool gen) { ForeignCallLinkage linkage = gen.getRuntime().lookupForeignCall(REGISTER_FINALIZER); gen.emitForeignCall(linkage, linkage.getCallingConvention(), this, gen.operand(object())); } @Override public ValueNode canonical(CanonicalizerTool tool) { ObjectStamp stamp = object.objectStamp(); boolean needsCheck = true; if (stamp.isExactType()) { needsCheck = stamp.type().hasFinalizer(); } else if (stamp.type() != null && !stamp.type().hasFinalizableSubclass()) { // if either the declared type of receiver or the holder // can be assumed to have no finalizers if (tool.assumptions().useOptimisticAssumptions()) { tool.assumptions().recordNoFinalizableSubclassAssumption(stamp.type()); needsCheck = false; } } if (!needsCheck) { return null; } return this; } @Override public void virtualize(VirtualizerTool tool) { State state = tool.getObjectState(object); if (state != null && !state.getVirtualObject().type().hasFinalizer()) { tool.delete(); } } @Override public boolean canDeoptimize() { return true; } @Override public FrameState getDeoptimizationState() { return deoptState; } @Override public void setDeoptimizationState(FrameState f) { updateUsages(deoptState, f); deoptState = f; } @Override public DeoptimizationReason getDeoptimizationReason() { return null; } @Override public boolean isCallSiteDeoptimization() { return false; } @SuppressWarnings("unused") @NodeIntrinsic public static void register(Object thisObj) { } }