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Java > Open Source Codes > gov > nasa > jpf > search > heuristic > HeuristicState


1 //
2 // Copyright (C) 2005 United States Government as represented by the
3 // Administrator of the National Aeronautics and Space Administration
4 // (NASA). All Rights Reserved.
5 //
6 // This software is distributed under the NASA Open Source Agreement
7 // (NOSA), version 1.3. The NOSA has been approved by the Open Source
8 // Initiative. See the file NOSA-1.3-JPF at the top of the distribution
9 // directory tree for the complete NOSA document.
10 //
11 // THE SUBJECT SOFTWARE IS PROVIDED "AS IS" WITHOUT ANY WARRANTY OF ANY
12 // KIND, EITHER EXPRESSED, IMPLIED, OR STATUTORY, INCLUDING, BUT NOT
13 // LIMITED TO, ANY WARRANTY THAT THE SUBJECT SOFTWARE WILL CONFORM TO
14 // SPECIFICATIONS, ANY IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR
15 // A PARTICULAR PURPOSE, OR FREEDOM FROM INFRINGEMENT, ANY WARRANTY THAT
16 // THE SUBJECT SOFTWARE WILL BE ERROR FREE, OR ANY WARRANTY THAT
17 // DOCUMENTATION, IF PROVIDED, WILL CONFORM TO THE SUBJECT SOFTWARE.
18 //
19 package gov.nasa.jpf.search.heuristic;
20
21 import gov.nasa.jpf.VMState;
22 import gov.nasa.jpf.util.CoverageManager;
23
24 import java.util.Hashtable JavaDoc;
25
26
27 /**
28  * wrapper for queuing states that are annotated by a priority that is
29  * computed by a configured heuristic. The queue order corresponds to
30  * the priorities
31  */
32 public class HeuristicState {
33   public Object JavaDoc otherData;
34   private VMState virtualState;
35   protected int priority;
36   protected int uniqueID; // Used so restored states will be "closer."
37 private int[][] IndexIFMap = new int[1][1];
38   private Hashtable JavaDoc InstructionMap = new Hashtable JavaDoc();
39
40   public HeuristicState (int id, int initPriority) {
41     uniqueID = id;
42     priority = initPriority;
43   }
44   
45   public void setPriority (int pr) {
46     priority = pr;
47   }
48
49   public int getPriority () {
50     return priority;
51   }
52
53   public void setVirtualState (VMState vs) {
54     virtualState = vs;
55   }
56
57   public VMState getVirtualState () {
58     return virtualState;
59   }
60
61   public boolean equals (HeuristicState hs) {
62     return (hs == this);
63   }
64
65   public void restoreCoverage () {
66     CoverageManager.setIndexIFMap(IndexIFMap);
67     CoverageManager.setInstructionMap(InstructionMap);
68   }
69
70   public void saveCoverage () {
71     IndexIFMap = CoverageManager.getIndexIFMap();
72     InstructionMap = CoverageManager.getInstructionMap();
73   }
74
75   public String JavaDoc toString () {
76     return "hs" + priority;
77   }
78 }
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