|
1
16 package net.sf.cglib;
17
18 import java.io.*;
19 import java.io.File  ;
20 import java.io.InputStream ;
21 import java.net.URL ;
22 import java.net.URLClassLoader ;
23 import java.util.*;
24 import java.util.ArrayList ;
25 import java.util.StringTokenizer ;
26
27 import net.sf.cglib.core.KeyFactory;
28 import net.sf.cglib.core.Signature;
29 import net.sf.cglib.proxy.*;
30 import net.sf.cglib.proxy.Callback;
31 import net.sf.cglib.proxy.Factory;
32 import net.sf.cglib.reflect.FastClass;
33
34 import junit.framework.*;
35
36
40 abstract public class CodeGenTestCase extends TestCase {
41 public CodeGenTestCase(String testName) {
42 super(testName);
43 }
44
45 public abstract void perform(ClassLoader loader)throws Throwable ;
46
47
48 public boolean leaks()throws Throwable {
49
50 List classPath = new ArrayList ();
51
52 for( StringTokenizer tokenizer = new StringTokenizer (System.getProperty("java.class.path"),File.pathSeparator); tokenizer.hasMoreElements(); ){
53
54 classPath.add( new File (tokenizer.nextToken()).toURL() );
55
56 }
57
58
59 final Set coreClasses = new HashSet();
60 coreClasses.add(Factory.class.getName());
61 coreClasses.add(Callback.class.getName());
62 coreClasses.add(MethodInterceptor.class.getName());
63 coreClasses.add(Mixin.class.getName());
64 coreClasses.add(KeyFactory.class.getName());
65 coreClasses.add(FastClass.class.getName());
66 coreClasses.add(Signature.class.getName());
67
68
69
70
71
72
73 URLClassLoader loader = new URLClassLoader ((URL []) classPath.toArray(new URL [classPath.size()])){
74
75 public Class loadClass(String name) throws ClassNotFoundException {
76
77 String res = name.replace('.','/') + ".class";
78
79 if(name.startsWith("java") || name.startsWith("org.objectweb.asm")){
80 return super.loadClass(name);
81 }
82
83
84
85 if( coreClasses.contains(name) ){
86 return super.loadClass(name);
87 }
88
89
90 try{
91
92
93 InputStream is = getResourceAsStream(res);
94 ByteArrayOutputStream bout = new ByteArrayOutputStream();
95 try{
96 int b;
97 while( (b = is.read()) != -1 ){
98 bout.write((byte)b);
99 }
100
101 }finally{
102 is.close();
103 }
104 byte data [] = bout.toByteArray();
105 return defineClass(name,data,0,data.length );
106 }catch(Exception e){
107 throw new ClassNotFoundException ( name + ":" + e.toString());
108 }
109 }
110
111 };
112
113 perform(loader);
114
115 java.lang.ref.Reference ref = new java.lang.ref.WeakReference (loader);
116
117 loader = null;
118 java.util.List list = new java.util.ArrayList ();
119
120 for(int i = 0; i < 512; i++ ){
121
122 System.gc();
123 System.gc();
124
125 if(ref.get() == null ){
126
127 return false;
128
129 }
130
131 byte[] garbage = new byte[ (i + 1)*1004 ];
132 list.add(garbage);
133
134
135 }
136
137 return true;
138
139
140 }
141
142
143
144 }
145
146 |
Popular Tags |
Java API By Example, From Geeks To Geeks.