1/* 2 * Copyright (c) 2002, 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 25package sun.jvm.hotspot.ui.tree; 26 27import java.util.*; 28import java.io.*; 29import sun.jvm.hotspot.oops.*; 30import sun.jvm.hotspot.debugger.*; 31import sun.jvm.hotspot.runtime.*; 32import sun.jvm.hotspot.utilities.*; 33 34/** Who directly points to this node. */ 35 36public class RevPtrsTreeNodeAdapter extends FieldTreeNodeAdapter { 37 private static FieldIdentifier fid = new NamedFieldIdentifier("_revPtrs"); 38 39 private List children; 40 41 public RevPtrsTreeNodeAdapter(Oop oop) { 42 this(oop, false); 43 } 44 45 public RevPtrsTreeNodeAdapter(Oop oop, boolean treeTableMode) { 46 super(fid, treeTableMode); 47 children = VM.getVM().getRevPtrs().get(oop); 48 } 49 50 public int getChildCount() { 51 return children != null ? children.size() : 0; 52 } 53 54 public SimpleTreeNode getChild(int index) { 55 LivenessPathElement lpe = (LivenessPathElement)children.get(index); 56 IndexableFieldIdentifier ifid = new IndexableFieldIdentifier(index); 57 Oop oop = lpe.getObj(); 58 if (oop != null) { 59 return new OopTreeNodeAdapter(oop, ifid, getTreeTableMode()); 60 } else { 61 NamedFieldIdentifier nfi = (NamedFieldIdentifier)lpe.getField(); 62 return new RootTreeNodeAdapter(nfi.getName(), ifid, getTreeTableMode()); 63 } 64 } 65 66 public boolean isLeaf() { 67 return false; 68 } 69 70 public int getIndexOfChild(SimpleTreeNode child) { 71 FieldIdentifier id = ((FieldTreeNodeAdapter) child).getID(); 72 IndexableFieldIdentifier ifid = (IndexableFieldIdentifier)id; 73 return ifid.getIndex(); 74 } 75 76 public String getName() { return "<<Reverse pointers>>"; } 77 public String getValue() { return ""; } 78} 79