| /* |
| * Copyright (c) 2000, 2012, 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.oops; |
| |
| import java.io.*; |
| import java.util.*; |
| import sun.jvm.hotspot.debugger.*; |
| import sun.jvm.hotspot.runtime.*; |
| import sun.jvm.hotspot.types.*; |
| import sun.jvm.hotspot.utilities.*; |
| |
| // ObjArrayKlass is the klass for ObjArrays |
| |
| public class ObjArrayKlass extends ArrayKlass { |
| static { |
| VM.registerVMInitializedObserver(new Observer() { |
| public void update(Observable o, Object data) { |
| initialize(VM.getVM().getTypeDataBase()); |
| } |
| }); |
| } |
| |
| private static synchronized void initialize(TypeDataBase db) throws WrongTypeException { |
| Type type = db.lookupType("ObjArrayKlass"); |
| elementKlass = new MetadataField(type.getAddressField("_element_klass"), 0); |
| bottomKlass = new MetadataField(type.getAddressField("_bottom_klass"), 0); |
| } |
| |
| public ObjArrayKlass(Address addr) { |
| super(addr); |
| } |
| |
| private static MetadataField elementKlass; |
| private static MetadataField bottomKlass; |
| |
| public Klass getElementKlass() { return (Klass) elementKlass.getValue(this); } |
| public Klass getBottomKlass() { return (Klass) bottomKlass.getValue(this); } |
| |
| public long computeModifierFlags() { |
| long elementFlags = getElementKlass().computeModifierFlags(); |
| long arrayFlags = 0L; |
| if ((elementFlags & (JVM_ACC_PUBLIC | JVM_ACC_PROTECTED)) != 0) { |
| // The array type is public if the component type is public or protected |
| arrayFlags = JVM_ACC_ABSTRACT | JVM_ACC_FINAL | JVM_ACC_PUBLIC; |
| } else { |
| // The array type is private if the component type is private |
| arrayFlags = JVM_ACC_ABSTRACT | JVM_ACC_FINAL; |
| } |
| return arrayFlags; |
| } |
| |
| public void iterateFields(MetadataVisitor visitor) { |
| super.iterateFields(visitor); |
| visitor.doMetadata(elementKlass, true); |
| visitor.doMetadata(bottomKlass, true); |
| } |
| |
| public Klass arrayKlassImpl(boolean orNull, int n) { |
| if (Assert.ASSERTS_ENABLED) { |
| Assert.that(getDimension() <= n, "check order of chain"); |
| } |
| int dimension = (int) getDimension(); |
| if (dimension == n) { |
| return this; |
| } |
| ObjArrayKlass ak = (ObjArrayKlass) getHigherDimension(); |
| if (ak == null) { |
| if (orNull) return null; |
| // FIXME: would need to change in reflective system to actually |
| // allocate klass |
| throw new RuntimeException("Can not allocate array klasses in debugging system"); |
| } |
| |
| if (orNull) { |
| return ak.arrayKlassOrNull(n); |
| } |
| return ak.arrayKlass(n); |
| } |
| |
| public Klass arrayKlassImpl(boolean orNull) { |
| return arrayKlassImpl(orNull, (int) (getDimension() + 1)); |
| } |
| |
| public void printValueOn(PrintStream tty) { |
| tty.print("ObjArrayKlass for "); |
| getElementKlass().printValueOn(tty); |
| } |
| }; |