1 /* 2 * Copyright (c) 2000, 2008, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 * 23 */ 24 25 package sun.jvm.hotspot.oops; 26 27 import sun.jvm.hotspot.debugger.*; 28 29 // The class for an oop field simply provides access to the value. 30 public class NarrowOopField extends OopField { NarrowOopField(FieldIdentifier id, long offset, boolean isVMField)31 public NarrowOopField(FieldIdentifier id, long offset, boolean isVMField) { 32 super(id, offset, isVMField); 33 } 34 NarrowOopField(sun.jvm.hotspot.types.OopField vmField, long startOffset)35 public NarrowOopField(sun.jvm.hotspot.types.OopField vmField, long startOffset) { 36 super(new NamedFieldIdentifier(vmField.getName()), vmField.getOffset() + startOffset, true); 37 } 38 NarrowOopField(InstanceKlass holder, int fieldArrayIndex)39 public NarrowOopField(InstanceKlass holder, int fieldArrayIndex) { 40 super(holder, fieldArrayIndex); 41 } 42 getValue(Oop obj)43 public Oop getValue(Oop obj) { 44 return obj.getHeap().newOop(getValueAsOopHandle(obj)); 45 } 46 47 /** Debugging support */ getValueAsOopHandle(Oop obj)48 public OopHandle getValueAsOopHandle(Oop obj) { 49 return obj.getHandle().getCompOopHandleAt(getOffset()); 50 } 51 setValue(Oop obj)52 public void setValue(Oop obj) throws MutationException { 53 // Fix this: setOopAt is missing in Address 54 } 55 } 56