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1   /*
2    * Copyright (c) 2002, 2012, 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
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23   */
24  
25  package sun.jvm.hotspot.memory;
26  
27  import java.io.*;
28  import java.util.*;
29  
30  import sun.jvm.hotspot.debugger.*;
31  import sun.jvm.hotspot.gc_interface.*;
32  import sun.jvm.hotspot.runtime.*;
33  import sun.jvm.hotspot.types.*;
34  
35  public abstract class SharedHeap extends CollectedHeap {
36    private static VirtualConstructor ctor;
37  
38    static {
39      VM.registerVMInitializedObserver(new Observer() {
40          public void update(Observable o, Object data) {
41            initialize(VM.getVM().getTypeDataBase());
42          }
43        });
44    }
45  
46    private static synchronized void initialize(TypeDataBase db) {
47      Type type = db.lookupType("SharedHeap");
48      ctor = new VirtualConstructor(db);
49    }
50  
51    public SharedHeap(Address addr) {
52      super(addr);
53    }
54  
55    public CollectedHeapName kind() {
56      return CollectedHeapName.SHARED_HEAP;
57    }
58    }