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Java > Open Source Codes > soot > coffi > Info


1 /* Soot - a J*va Optimization Framework
2  * Copyright (C) 1997 Clark Verbrugge
3  *
4  * This library is free software; you can redistribute it and/or
5  * modify it under the terms of the GNU Lesser General Public
6  * License as published by the Free Software Foundation; either
7  * version 2.1 of the License, or (at your option) any later version.
8  *
9  * This library is distributed in the hope that it will be useful,
10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12  * Lesser General Public License for more details.
13  *
14  * You should have received a copy of the GNU Lesser General Public
15  * License along with this library; if not, write to the
16  * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
17  * Boston, MA 02111-1307, USA.
18  */
19
20 /*
21  * Modified by the Sable Research Group and others 1997-1999.
22  * See the 'credits' file distributed with Soot for the complete list of
23  * contributors. (Soot is distributed at http://www.sable.mcgill.ca/soot)
24  */
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32 package soot.coffi;
33 // for storing statistical or informative data about a class file
34
35 import java.io.*;
36
37 class Info {
38
39   public ClassFile cf;
40   public long flength; // file length
41
42   public int cp; // number of constant pool entries
43 public int fields; // number of fields
44 public int methods; // number of methods
45 public int pfields; // private fields
46 public int pmethods; // private methods
47
48   public int attribsave; // savings through attribute elimination
49 public int attribcpsave;// savings through cp compression after attribute elim.
50 public int psave; // savings through renaming privates
51
52   public Info(ClassFile newcf) { cf = newcf; }
53
54   public void verboseReport(PrintStream ps) {
55     int total;
56
57     ps.println("<INFO> -- Debigulation Report on " + cf.fn + " --");
58     ps.println("<INFO> Length: " + flength);
59     ps.println("<INFO> CP: " + cp + " reduced to " + cf.constant_pool_count);
60     ps.println("<INFO> Fields: " + fields + " (" + pfields + " private)" +
61                " reduced to " + cf.fields_count);
62     ps.println("<INFO> Methods: " + methods + " (" + pmethods + " private)" +
63                " reduced to " + cf.methods_count);
64     total = attribsave+attribcpsave+psave;
65     if (total>0) {
66       ps.println("<INFO> -- Savings through debigulation --");
67       if (attribsave > 0)
68         ps.println("<INFO> Attributes: " + attribsave);
69       if (attribcpsave > 0)
70         ps.println("<INFO> CP Compression: " + attribcpsave);
71       if (psave > 0)
72         ps.println("<INFO> Private renaming: " + psave);
73       ps.println("<INFO> Total savings: " + total);
74       double d = (((double)total)*100000.0)/((double)flength);
75       int x = (int)d;
76       d = ((double)x)/1000.0;
77       ps.println("<INFO> ratio: " + d + "%");
78     }
79   }
80 }
81
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