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Java > Open Source Codes > com > vladium > emma > rt > RTExitHook


1 /* Copyright (C) 2003 Vladimir Roubtsov. All rights reserved.
2  *
3  * This program and the accompanying materials are made available under
4  * the terms of the Common Public License v1.0 which accompanies this distribution,
5  * and is available at http://www.eclipse.org/legal/cpl-v10.html
6  *
7  * $Id: RTExitHook.java,v 1.1.1.1.2.2 2004/07/10 03:34:53 vlad_r Exp $
8  */
9 package com.vladium.emma.rt;
10
11 import java.io.File JavaDoc;
12 import java.io.IOException JavaDoc;
13 import java.io.InputStream JavaDoc;
14 import java.util.Properties JavaDoc;
15 import java.util.StringTokenizer JavaDoc;
16
17 import com.vladium.emma.data.ICoverageData;
18
19 // ----------------------------------------------------------------------------
20 /**
21  * @author Vlad Roubtsov, (C) 2003
22  */
23 final class RTExitHook implements Runnable JavaDoc
24 {
25     // public: ................................................................
26
27     
28     public synchronized void run ()
29     {
30         if (m_cdata != null)
31         {
32             RTCoverageDataPersister.dumpCoverageData (m_cdata, true, m_outFile, m_merge);
33             
34             m_RT = null;
35             m_cdata = null;
36         }
37     }
38     
39     public static void createClassLoaderClosure ()
40     {
41         Properties JavaDoc closureMap = null;
42         
43         InputStream JavaDoc in = null;
44         try
45         {
46             // note that this does not use ClassLoaderResolver by design
47 // (closure loading must not load any app classes that are outside
48 /// the closure list)
49
50             in = RTExitHook.class.getResourceAsStream (CLOSURE_RESOURCE);
51             if (in != null)
52             {
53                 closureMap = new Properties JavaDoc ();
54                 closureMap.load (in);
55             }
56             else
57             {
58                 throw new Error JavaDoc ("packaging failure: closure resource not found");
59             }
60         }
61         catch (Exception JavaDoc e)
62         {
63             e.printStackTrace (System.out);
64             
65             throw new Error JavaDoc ("packaging failure: " + e.toString ());
66         }
67         finally
68         {
69             if (in != null) try { in.close (); } catch (IOException JavaDoc ignore) { ignore.printStackTrace (); }
70         }
71         in = null;
72         
73         final String JavaDoc closureList = closureMap.getProperty ("closure");
74         if (closureList == null)
75         {
76             throw new Error JavaDoc ("packaging failure: no closure mapping");
77         }
78         
79         // note that this uses the current classloader (only), consistently
80 // with the getResourceAsStream() above:
81
82         final ClassLoader JavaDoc loader = RTExitHook.class.getClassLoader ();
83         
84         final StringTokenizer JavaDoc tokenizer = new StringTokenizer JavaDoc (closureList, ",");
85         while (tokenizer.hasMoreTokens ())
86         {
87             final String JavaDoc className = tokenizer.nextToken ();
88             
89             try
90             {
91                 Class.forName (className, true, loader);
92             }
93             catch (Exception JavaDoc e)
94             {
95                 throw new Error JavaDoc ("packaging failure: class [" + className + "] not found {" + e.toString () + "}");
96             }
97         }
98     }
99     
100     // protected: .............................................................
101
102     // package: ...............................................................
103
104
105     RTExitHook (final Class JavaDoc RT, final ICoverageData cdata, final File JavaDoc outFile, final boolean merge)
106     {
107         m_RT = RT;
108         m_cdata = cdata;
109         
110         m_outFile = outFile;
111         m_merge = merge;
112     }
113         
114     // private: ...............................................................
115
116
117     private final File JavaDoc m_outFile;
118     private final boolean m_merge;
119     
120     private Class JavaDoc m_RT; // keep our RT class pinned in memory
121 private ICoverageData m_cdata;
122     
123     private static final String JavaDoc CLOSURE_RESOURCE = "RTExitHook.closure"; // relative to this package
124
125 } // end of class
126 // ----------------------------------------------------------------------------
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