Mercurial > hg > truffle
view graal/com.oracle.graal.nodes/src/com/oracle/graal/nodes/java/RegisterFinalizerNode.java @ 15926:af0e42dad358
reduced time to initialize ForeignCallProviders by avoiding triggering class initialization of Node subclasses as well as making annotation parsing lazy in SnippetInfo
author | Doug Simon <doug.simon@oracle.com> |
---|---|
date | Tue, 27 May 2014 15:43:36 +0200 |
parents | 468b2428c403 |
children | c5b2a3c22318 |
line wrap: on
line source
/* * 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 static com.oracle.graal.nodes.java.ForeignCallDescriptors.*; import com.oracle.graal.api.code.*; import com.oracle.graal.compiler.common.type.*; import com.oracle.graal.graph.*; import com.oracle.graal.graph.spi.*; import com.oracle.graal.nodes.*; import com.oracle.graal.nodes.spi.*; /** * 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 Canonicalizable, LIRLowerable, Virtualizable, DeoptimizingNode.DeoptAfter { @Input(InputType.State) 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(NodeLIRBuilderTool gen) { ForeignCallLinkage linkage = gen.getLIRGeneratorTool().getForeignCalls().lookupForeignCall(REGISTER_FINALIZER); gen.getLIRGeneratorTool().emitForeignCall(linkage, gen.state(this), gen.operand(object())); } @Override public Node canonical(CanonicalizerTool tool) { if (!(object.stamp() instanceof ObjectStamp)) { return this; } ObjectStamp stamp = (ObjectStamp) object.stamp(); 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; } @SuppressWarnings("unused") @NodeIntrinsic public static void register(Object thisObj) { } }