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Java > Open Source Codes > org > objectweb > asm > ASMPerfTest


1 /***
2  * ASM performance test: measures the performances of asm package
3  * Copyright (c) 2002-2005 France Telecom
4  * All rights reserved.
5  *
6  * Redistribution and use in source and binary forms, with or without
7  * modification, are permitted provided that the following conditions
8  * are met:
9  * 1. Redistributions of source code must retain the above copyright
10  * notice, this list of conditions and the following disclaimer.
11  * 2. Redistributions in binary form must reproduce the above copyright
12  * notice, this list of conditions and the following disclaimer in the
13  * documentation and/or other materials provided with the distribution.
14  * 3. Neither the name of the copyright holders nor the names of its
15  * contributors may be used to endorse or promote products derived from
16  * this software without specific prior written permission.
17  *
18  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
19  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
20  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
21  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
22  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
23  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
24  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
25  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
26  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
27  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
28  * THE POSSIBILITY OF SUCH DAMAGE.
29  */
30 package org.objectweb.asm;
31
32 import org.objectweb.asm.ClassAdapter;
33 import org.objectweb.asm.ClassReader;
34 import org.objectweb.asm.ClassVisitor;
35 import org.objectweb.asm.ClassWriter;
36 import org.objectweb.asm.MethodAdapter;
37 import org.objectweb.asm.MethodVisitor;
38 import org.objectweb.asm.Opcodes;
39
40 import java.io.InputStream JavaDoc;
41
42 /**
43  * @author Eric Bruneton
44  */
45 public class ASMPerfTest extends ALLPerfTest {
46
47     final static Integer JavaDoc ONE = new Integer JavaDoc(1);
48
49     public static void main(final String JavaDoc args[]) throws Exception JavaDoc {
50         System.out.println("ASM PERFORMANCES\n");
51         new ASMPerfTest().perfs(args);
52     }
53
54     ALLPerfTest newInstance() {
55         return new ASMPerfTest();
56     }
57
58     byte[] nullAdaptClass(final InputStream JavaDoc is, final String JavaDoc name)
59             throws Exception JavaDoc
60     {
61         ClassReader cr = new ClassReader(is);
62         ClassWriter cw = new ClassWriter(compute);
63         ClassAdapter ca = new ClassAdapter(cw);
64         cr.accept(ca, skipDebug);
65         return cw.toByteArray();
66     }
67
68     byte[] counterAdaptClass(final InputStream JavaDoc is, final String JavaDoc name)
69             throws Exception JavaDoc
70     {
71         ClassReader cr = new ClassReader(is);
72         ClassWriter cw = new ClassWriter(false);
73         ClassAdapter ca = new CounterClassAdapter(cw);
74         cr.accept(ca, false);
75         return cw.toByteArray();
76     }
77
78     static class CounterClassAdapter extends ClassAdapter implements Opcodes {
79
80         private String JavaDoc owner;
81
82         CounterClassAdapter(ClassVisitor cv) {
83             super(cv);
84         }
85
86         public void visit(
87             int version,
88             int access,
89             String JavaDoc name,
90             String JavaDoc signature,
91             String JavaDoc superName,
92             String JavaDoc[] interfaces)
93         {
94             super.visit(version, access, name, signature, superName, interfaces);
95             if ((access & ACC_INTERFACE) == 0) {
96                 cv.visitField(ACC_PUBLIC, "_counter", "I", null, null);
97             }
98             owner = name;
99         }
100
101         public MethodVisitor visitMethod(
102             int access,
103             String JavaDoc name,
104             String JavaDoc desc,
105             String JavaDoc signature,
106             String JavaDoc[] exceptions)
107         {
108             MethodVisitor mv = super.visitMethod(access,
109                     name,
110                     desc,
111                     signature,
112                     exceptions);
113             if (!name.equals("<init>")
114                     && (access & (ACC_STATIC + ACC_NATIVE + ACC_ABSTRACT)) == 0)
115             {
116                 mv.visitVarInsn(ALOAD, 0);
117                 mv.visitVarInsn(ALOAD, 0);
118                 mv.visitFieldInsn(GETFIELD, owner, "_counter", "I");
119                 mv.visitLdcInsn(ONE);
120                 mv.visitInsn(IADD);
121                 mv.visitFieldInsn(PUTFIELD, owner, "_counter", "I");
122                 return new CounterCodeAdapter(mv);
123             }
124             return mv;
125         }
126     }
127
128     static class CounterCodeAdapter extends MethodAdapter {
129
130         CounterCodeAdapter(MethodVisitor mv) {
131             super(mv);
132         }
133
134         public void visitMaxs(int maxStack, int maxLocals) {
135             super.visitMaxs(Math.max(maxStack, 2), maxLocals);
136         }
137     }
138 }
139
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