Mercurial > hg > truffle
view agent/src/share/classes/sun/jvm/hotspot/memory/DictionaryEntry.java @ 4626:ee91624e54e6
Fix checkcast type in polymorphic inlining
author | Gilles Duboscq <duboscq@ssw.jku.at> |
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date | Fri, 17 Feb 2012 12:37:17 +0100 |
parents | 1d1603768966 |
children | da91efe96a93 |
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/* * Copyright (c) 2003, 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 sun.jvm.hotspot.memory; import java.util.*; import sun.jvm.hotspot.debugger.*; import sun.jvm.hotspot.oops.*; import sun.jvm.hotspot.types.*; import sun.jvm.hotspot.runtime.*; import sun.jvm.hotspot.utilities.*; public class DictionaryEntry extends sun.jvm.hotspot.utilities.HashtableEntry { static { VM.registerVMInitializedObserver(new Observer() { public void update(Observable o, Object data) { initialize(VM.getVM().getTypeDataBase()); } }); } private static synchronized void initialize(TypeDataBase db) { Type type = db.lookupType("DictionaryEntry"); pdSetField = type.getAddressField("_pd_set"); loaderField = type.getOopField("_loader"); } // Fields private static AddressField pdSetField; private static sun.jvm.hotspot.types.OopField loaderField; // Accessors public ProtectionDomainEntry pdSet() { Address tmp = pdSetField.getValue(addr); return (ProtectionDomainEntry) VMObjectFactory.newObject( ProtectionDomainEntry.class, tmp); } public Oop loader() { return VM.getVM().getObjectHeap().newOop(loaderField.getValue(addr)); } public Klass klass() { return (Klass)VM.getVM().getObjectHeap().newOop(literalValue().addOffsetToAsOopHandle(0)); } public DictionaryEntry(Address addr) { super(addr); } public boolean equals(Symbol className, Oop classLoader) { InstanceKlass ik = (InstanceKlass) klass(); Oop loader = loader(); if (! ik.getName().equals(className)) { return false; } else { return (loader == null)? (classLoader == null) : (loader.equals(classLoader)); } } public boolean isValidProtectionDomain(Oop protectionDomain) { if (protectionDomain == null) { return true; } else { return containsProtectionDomain(protectionDomain); } } public boolean containsProtectionDomain(Oop protectionDomain) { InstanceKlass ik = (InstanceKlass) klass(); if (protectionDomain.equals(ik.getProtectionDomain())) { return true; // Succeeds trivially } for (ProtectionDomainEntry current = pdSet(); current != null; current = current.next()) { if (protectionDomain.equals(current.protectionDomain())) { return true; } } return false; } /* covariant return type :-( public DictionaryEntry next() { return (DictionaryEntry) super.next(); } For now, let the caller cast it .. */ }