1 /* 2 * Copyright (c) 2011, 2020, 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.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 import sun.jvm.hotspot.utilities.Observable; 33 import sun.jvm.hotspot.utilities.Observer; 34 35 public class Block_Array extends VMObject { 36 static { VM.registerVMInitializedObserver(new Observer() { public void update(Observable o, Object data) { initialize(VM.getVM().getTypeDataBase()); } })37 VM.registerVMInitializedObserver(new Observer() { 38 public void update(Observable o, Object data) { 39 initialize(VM.getVM().getTypeDataBase()); 40 } 41 }); 42 } 43 initialize(TypeDataBase db)44 private static synchronized void initialize(TypeDataBase db) throws WrongTypeException { 45 Type type = db.lookupType("Block_Array"); 46 sizeField = new CIntField(type.getCIntegerField("_size"), 0); 47 blocksField = type.getAddressField("_blocks"); 48 arenaField = type.getAddressField("_arena"); 49 } 50 51 private static CIntField sizeField; 52 private static AddressField blocksField; 53 private static AddressField arenaField; 54 Block_Array(Address addr)55 public Block_Array(Address addr) { 56 super(addr); 57 } 58 Max()59 public int Max() { 60 return (int) sizeField.getValue(getAddress()); 61 } 62 at(int i)63 public Block at(int i) { 64 return new Block(blocksField.getValue(getAddress()).getAddressAt(i * (int)VM.getVM().getAddressSize())); 65 } 66 } 67