Mercurial > hg > graal-jvmci-8
view graal/com.oracle.max.graal.compiler/src/com/oracle/max/graal/nodes/java/RegisterFinalizerNode.java @ 3530:da773e1b6d9f
Third round of refactoring.
author | Thomas Wuerthinger <thomas@wuerthinger.net> |
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date | Wed, 10 Aug 2011 00:47:53 +0200 |
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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.max.graal.nodes.java; import com.oracle.max.graal.compiler.*; import com.oracle.max.graal.compiler.debug.*; import com.oracle.max.graal.compiler.graph.*; import com.oracle.max.graal.graph.*; import com.oracle.max.graal.nodes.base.*; import com.oracle.max.graal.nodes.spi.*; import com.sun.cri.ci.*; import com.sun.cri.ri.*; /** * This instruction is used to perform the finalizer registration at the end of the java.lang.Object constructor. */ public final class RegisterFinalizerNode extends StateSplit implements Canonicalizable { @Input private ValueNode object; public ValueNode object() { return object; } public void setObject(ValueNode x) { updateUsages(object, x); object = x; } public RegisterFinalizerNode(ValueNode object, Graph graph) { super(CiKind.Void, graph); setObject(object); } @Override public void accept(ValueVisitor v) { v.visitRegisterFinalizer(this); } @Override public Node canonical(NotifyReProcess reProcess) { RiType declaredType = object.declaredType(); RiType exactType = object.exactType(); if (exactType == null && declaredType != null) { exactType = declaredType.exactType(); } boolean needsCheck = true; if (exactType != null) { // we have an exact type needsCheck = exactType.hasFinalizer(); } else { // if either the declared type of receiver or the holder can be assumed to have no finalizers if (declaredType != null && !declaredType.hasFinalizableSubclass()) { if (((CompilerGraph) graph()).assumptions().recordNoFinalizableSubclassAssumption(declaredType)) { needsCheck = false; } } } if (needsCheck) { if (GraalOptions.TraceCanonicalizer) { TTY.println("Could not canonicalize finalizer " + object + " (declaredType=" + declaredType + ", exactType=" + exactType + ")"); } } else { if (GraalOptions.TraceCanonicalizer) { TTY.println("Canonicalized finalizer for object " + object); } return next(); } return this; } }