1 /* 2 * Copyright (c) 2011, 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, 20 * CA 95054 USA or visit www.sun.com if you need additional information or 21 * have any questions. 22 * 23 */ 24 25 package sun.jvm.hotspot.opto; 26 27 import java.util.*; 28 import sun.jvm.hotspot.debugger.*; 29 import sun.jvm.hotspot.runtime.*; 30 import sun.jvm.hotspot.oops.*; 31 import sun.jvm.hotspot.types.*; 32 33 public class Block_Array extends VMObject { 34 static { 35 VM.registerVMInitializedObserver(new Observer() { 36 public void update(Observable o, Object data) { 37 initialize(VM.getVM().getTypeDataBase()); 38 } 39 }); 40 } 41 42 private static synchronized void initialize(TypeDataBase db) throws WrongTypeException { 43 Type type = db.lookupType("Block_Array"); 44 sizeField = new CIntField(type.getCIntegerField("_size"), 0); 45 blocksField = type.getAddressField("_blocks"); 46 arenaField = type.getAddressField("_arena"); 47 } 48 49 private static CIntField sizeField; 50 private static AddressField blocksField; 51 private static AddressField arenaField; 52 53 public Block_Array(Address addr) { 54 super(addr); 55 } 56 57 public int Max() { 58 return (int) sizeField.getValue(getAddress()); 59 } 60 61 public Block at(int i) { 62 return new Block(blocksField.getValue(getAddress()).getAddressAt(i * (int)VM.getVM().getAddressSize())); 63 } 64 }