1/*
2 * Copyright (c) 2003, 2015, 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.gc.parallel;
26
27import java.io.*;
28import java.util.*;
29
30import sun.jvm.hotspot.debugger.*;
31import sun.jvm.hotspot.gc.shared.*;
32import sun.jvm.hotspot.runtime.*;
33import sun.jvm.hotspot.types.*;
34
35public 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_SCAVENGE_HEAP;
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}
98