1 /* 2 * Copyright (c) 2003, 2018, 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.parallel; 26 27 import java.io.*; 28 import java.util.*; 29 30 import sun.jvm.hotspot.debugger.*; 31 import sun.jvm.hotspot.gc.shared.*; 32 import sun.jvm.hotspot.runtime.*; 33 import sun.jvm.hotspot.types.*; 34 35 public class ParallelScavengeHeap extends CollectedHeap { 36 static { 37 VM.registerVMInitializedObserver(new Observer() { 38 public void update(Observable o, Object data) { 39 initialize(VM.getVM().getTypeDataBase()); 40 } 41 }); 42 } 43 44 private static synchronized void initialize(TypeDataBase db) { 45 Type type = db.lookupType("ParallelScavengeHeap"); 46 youngGenField = type.getAddressField("_young_gen"); 47 oldGenField = type.getAddressField("_old_gen"); 48 } 49 50 public ParallelScavengeHeap(Address addr) { 51 super(addr); 52 } 53 54 // Fields 55 private static AddressField youngGenField; 56 private static AddressField oldGenField; 57 58 // Accessors 59 public PSYoungGen youngGen() { 60 return (PSYoungGen) VMObjectFactory.newObject(PSYoungGen.class, youngGenField.getValue()); 61 } 62 63 public PSOldGen oldGen() { 64 return (PSOldGen) VMObjectFactory.newObject(PSOldGen.class, oldGenField.getValue()); 65 } 66 67 public long capacity() { 68 return youngGen().capacity() + oldGen().capacity(); 69 } 70 71 public long used() { 72 return youngGen().used() + oldGen().used(); 73 } 74 75 public boolean isIn(Address a) { 76 if (youngGen().isIn(a)) { 77 return true; 78 } 79 80 if (oldGen().isIn(a)) { 81 return true; 82 } 83 84 return false; 85 } 86 87 public CollectedHeapName kind() { 88 return CollectedHeapName.PARALLEL; 89 } 90 91 public void printOn(PrintStream tty) { 92 tty.print("ParallelScavengeHeap [ "); 93 youngGen().printOn(tty); 94 oldGen().printOn(tty); 95 tty.print(" ] "); 96 } 97 }