Mercurial > hg > graal-jvmci-8
diff agent/src/share/classes/sun/jvm/hotspot/memory/DictionaryEntry.java @ 0:a61af66fc99e jdk7-b24
Initial load
author | duke |
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date | Sat, 01 Dec 2007 00:00:00 +0000 |
parents | |
children | c18cbe5936b8 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/agent/src/share/classes/sun/jvm/hotspot/memory/DictionaryEntry.java Sat Dec 01 00:00:00 2007 +0000 @@ -0,0 +1,112 @@ +/* + * 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 .. + */ +}