1 /* 2 * Copyright (c) 2003, 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.gc_implementation.parallelScavenge; 26 27 import java.io.*; 28 import java.util.*; 29 30 import sun.jvm.hotspot.debugger.*; 31 import sun.jvm.hotspot.gc_implementation.shared.*; 32 import sun.jvm.hotspot.memory.*; 33 import sun.jvm.hotspot.runtime.*; 34 import sun.jvm.hotspot.types.*; 35 36 public class PSOldGen extends VMObject { 37 static { 38 VM.registerVMInitializedObserver(new Observer() { 39 public void update(Observable o, Object data) { 40 initialize(VM.getVM().getTypeDataBase()); 41 } 42 }); 43 } 44 45 private static synchronized void initialize(TypeDataBase db) { 46 Type type = db.lookupType("PSOldGen"); 47 objectSpaceField = type.getAddressField("_object_space"); 48 } 49 50 public PSOldGen(Address addr) { 51 super(addr); 52 } 53 54 // Fields 55 private static AddressField objectSpaceField; 56 57 // Accessors 58 public MutableSpace objectSpace() { 59 return (MutableSpace) VMObjectFactory.newObject(MutableSpace.class, objectSpaceField.getValue(addr)); 60 } 61 62 public long capacity() { 63 return objectSpace().capacity(); 64 } 65 66 public long used() { 67 return objectSpace().used(); 68 } 69 70 public boolean isIn(Address a) { 71 return objectSpace().contains(a); 72 } 73 74 public void printOn(PrintStream tty) { 75 tty.print("PSOldGen [ "); 76 objectSpace().printOn(tty); 77 tty.print(" ] "); 78 } 79 }