| /* |
| * Copyright 2003-2005 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
| * CA 95054 USA or visit www.sun.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) literal(); |
| } |
| |
| 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 .. |
| */ |
| } |