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1   /*
2    * Copyright (c) 2002, 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.oops;
26  
27  import java.util.*;
28  
29  import sun.jvm.hotspot.debugger.*;
30  import sun.jvm.hotspot.runtime.*;
31  import sun.jvm.hotspot.types.*;
32  
33  public class BreakpointInfo extends VMObject {
34    private static CIntegerField origBytecodeField;
35    private static CIntegerField bciField;
36    private static CIntegerField nameIndexField;
37    private static CIntegerField signatureIndexField;
38    private static AddressField  nextField;
39  
40    static {
41      VM.registerVMInitializedObserver(new Observer() {
42          public void update(Observable o, Object data) {
43            initialize(VM.getVM().getTypeDataBase());
44          }
45        });
46    }
47  
48    private static synchronized void initialize(TypeDataBase db) throws WrongTypeException {
49      Type type                  = db.lookupType("BreakpointInfo");
50  
51      origBytecodeField   = type.getCIntegerField("_orig_bytecode");
52      bciField            = type.getCIntegerField("_bci");
53      nameIndexField      = type.getCIntegerField("_name_index");
54      signatureIndexField = type.getCIntegerField("_signature_index");
55      nextField           = type.getAddressField ("_next");
56    }
57  
58    public BreakpointInfo(Address addr) {
59      super(addr);
60    }
61  
62    public int  getOrigBytecode()   { return (int) origBytecodeField.getValue(addr);   }
63    public int  getBCI()            { return (int) bciField.getValue(addr);            }
64    public long getNameIndex()      { return nameIndexField.getValue(addr);            }
65    public long getSignatureIndex() { return signatureIndexField.getValue(addr);       }
66    public BreakpointInfo getNext() {
67      return (BreakpointInfo) VMObjectFactory.newObject(BreakpointInfo.class, nextField.getValue(addr));
68    }
69  
70    public boolean match(Method m, int bci) {
71      return (bci == getBCI() && match(m));
72    }
73  
74    public boolean match(Method m) {
75      return (getNameIndex() == m.getNameIndex() &&
76              getSignatureIndex() == m.getSignatureIndex());
77    }
78  }