1 salcianu 1.1.2.1 // MyAP.java, created Mon Apr 3 18:22:05 2000 by salcianu
2 cananian 1.1.2.12 // Copyright (C) 2000 Alexandru SALCIANU <salcianu@retezat.lcs.mit.edu>
3 salcianu 1.1.2.1 // Licensed under the terms of the GNU GPL; see COPYING for details.
4 salcianu 1.1.2.1 package harpoon.Analysis.PointerAnalysis;
5 salcianu 1.1.2.1
6 salcianu 1.1.2.1 import harpoon.Analysis.Maps.AllocationInformation;
7 salcianu 1.1.2.10 import harpoon.Analysis.DefaultAllocationInformation;
8 kkz 1.1.2.6 import harpoon.ClassFile.HClass;
9 salcianu 1.6 import harpoon.Temp.Label;
10 salcianu 1.1.2.1 import harpoon.Temp.Temp;
11 salcianu 1.1.2.1
12 salcianu 1.1.2.1 import harpoon.Util.Util;
13 salcianu 1.1.2.1
14 salcianu 1.1.2.1 /**
15 salcianu 1.1.2.1 * <code>MyAP</code> is my own implementation for the
16 salcianu 1.1.2.1 <code>AllocationProperties</code>.
17 salcianu 1.1.2.1 *
18 cananian 1.1.2.12 * @author Alexandru SALCIANU <salcianu@retezat.lcs.mit.edu>
19 salcianu 1.6 * @version $Id: MyAP.java,v 1.6 2003/03/03 23:41:45 salcianu Exp $
20 salcianu 1.1.2.1 */
21 salcianu 1.1.2.2 public class MyAP implements AllocationInformation.AllocationProperties,
22 salcianu 1.1.2.7 java.io.Serializable,
23 salcianu 1.1.2.7 java.lang.Cloneable {
24 salcianu 1.1.2.1
25 salcianu 1.1.2.1 // hasInteriorPointers
26 salcianu 1.1.2.1 public boolean hip = true;
27 salcianu 1.1.2.1 // canBeStackAllocated
28 salcianu 1.1.2.1 public boolean sa = false;
29 salcianu 1.1.2.1 // canBeThreadAllocated
30 salcianu 1.1.2.1 public boolean ta = false;
31 salcianu 1.1.2.4 // useOwnHeap
32 salcianu 1.1.2.1 public boolean uoh = false;
33 salcianu 1.1.2.4 // make heap (true at the thread object creation sites)
34 salcianu 1.1.2.4 public boolean mh = false;
35 salcianu 1.1.2.10 // sync's on this object are unnecessary
36 salcianu 1.1.2.10 public boolean ns = false;
37 salcianu 1.1.2.4
38 salcianu 1.1.2.1 // the Temp pointing to the thread object on whose stack
39 salcianu 1.1.2.4 // the NEW quad is going to allocate the object; "null"
40 salcianu 1.1.2.1 // to indicate the current thread.
41 salcianu 1.1.2.1 public Temp ah = null;
42 salcianu 1.1.2.1
43 kkz 1.1.2.6 private HClass actualClass;
44 kkz 1.1.2.6
45 salcianu 1.1.2.1 /** Creates a <code>MyAP</code>. */
46 kkz 1.1.2.6 public MyAP(HClass actualClass) {
47 kkz 1.1.2.6 this.actualClass = actualClass;
48 salcianu 1.1.2.10 this.hip =
49 salcianu 1.1.2.10 DefaultAllocationInformation.hasInteriorPointers(actualClass);
50 kkz 1.1.2.6 }
51 salcianu 1.1.2.1
52 salcianu 1.1.2.1
53 salcianu 1.1.2.1 public boolean hasInteriorPointers(){
54 salcianu 1.1.2.1 return hip;
55 salcianu 1.1.2.1 }
56 salcianu 1.1.2.1
57 salcianu 1.1.2.1 public boolean canBeStackAllocated(){
58 salcianu 1.1.2.1 return sa;
59 salcianu 1.1.2.1 }
60 salcianu 1.1.2.1
61 salcianu 1.1.2.1 public boolean canBeThreadAllocated(){
62 salcianu 1.1.2.1 return ta;
63 salcianu 1.1.2.1 }
64 salcianu 1.1.2.1
65 cananian 1.1.2.3 public boolean makeHeap(){
66 salcianu 1.1.2.4 return mh;
67 salcianu 1.1.2.10 }
68 salcianu 1.1.2.10
69 salcianu 1.1.2.10 public boolean noSync() {
70 salcianu 1.1.2.11 return sa || ta || ns;
71 salcianu 1.1.2.1 }
72 salcianu 1.1.2.1
73 salcianu 1.1.2.1 public Temp allocationHeap(){
74 salcianu 1.1.2.1 return ah;
75 kkz 1.1.2.6 }
76 kkz 1.1.2.6
77 kkz 1.1.2.6 public HClass actualClass() {
78 kkz 1.1.2.6 return actualClass;
79 salcianu 1.1.2.7 }
80 salcianu 1.1.2.7
81 kkz 1.3 public boolean setDynamicWBFlag() {
82 kkz 1.3 return false;
83 kkz 1.3 }
84 salcianu 1.4
85 salcianu 1.6 public Label getLabelOfPtrToMemoryChunk() { return null; }
86 salcianu 1.6 public int getUniqueID() { return -1; }
87 salcianu 1.1.2.7
88 salcianu 1.1.2.7 public Object clone() {
89 salcianu 1.1.2.7 try{
90 salcianu 1.1.2.7 return super.clone();
91 salcianu 1.1.2.7 }
92 salcianu 1.1.2.7 catch(CloneNotSupportedException excp){
93 salcianu 1.1.2.7 System.exit(1);
94 salcianu 1.1.2.7 return null; // should never happen
95 salcianu 1.1.2.7 }
96 salcianu 1.1.2.1 }
97 salcianu 1.1.2.1
98 salcianu 1.1.2.1 /** Pretty printer for debug. */
99 salcianu 1.1.2.1 public String toString(){
100 salcianu 1.1.2.4 String hipstr =
101 salcianu 1.1.2.4 hasInteriorPointers() ? "interior ptrs; " : "no interior ptrs; ";
102 salcianu 1.1.2.11
103 salcianu 1.1.2.11 if(noSync())
104 salcianu 1.1.2.11 hipstr += " nosync ";
105 salcianu 1.1.2.4
106 salcianu 1.1.2.4 if(makeHeap()) hipstr = hipstr + " [make heap] ";
107 salcianu 1.1.2.4
108 salcianu 1.1.2.4 if(canBeStackAllocated())
109 salcianu 1.1.2.1 return hipstr + "Stack allocation";
110 salcianu 1.1.2.4
111 salcianu 1.1.2.5 if(canBeThreadAllocated()){
112 salcianu 1.1.2.5 if(makeHeap())
113 salcianu 1.1.2.5 return hipstr + " Thread allocation on its own heap";
114 salcianu 1.1.2.5 else{
115 salcianu 1.1.2.5 if(allocationHeap() != null)
116 salcianu 1.1.2.5 return (hipstr + "Thread allocation on the heap of " +
117 salcianu 1.1.2.5 allocationHeap());
118 salcianu 1.1.2.5 else
119 salcianu 1.1.2.5 return
120 salcianu 1.1.2.5 hipstr +
121 salcianu 1.1.2.5 "Thread allocation on the current thread's heap";
122 salcianu 1.1.2.5 }
123 salcianu 1.1.2.5 }
124 salcianu 1.1.2.1 return hipstr + "Global heap allocation";
125 salcianu 1.1.2.1 }
126 cananian 1.2 }