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


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 serp.bytecode.BCClass;
33 import serp.bytecode.BCMethod;
34 import serp.bytecode.Code;
35 import serp.bytecode.Project;
36
37 import java.io.InputStream JavaDoc;
38
39 /**
40  * @author Eric Bruneton
41  */
42 public class SERPPerfTest extends ALLPerfTest {
43
44     private static Project p = new Project();
45
46     private static BCClass c;
47
48     public static void main(final String JavaDoc args[]) throws Exception JavaDoc {
49         System.out.println("SERP PERFORMANCES\n");
50         new SERPPerfTest().perfs(args);
51     }
52
53     ALLPerfTest newInstance() {
54         return new SERPPerfTest();
55     }
56
57     byte[] nullAdaptClass(final InputStream JavaDoc is, final String JavaDoc name)
58             throws Exception JavaDoc
59     {
60         if (c != null) {
61             p.removeClass(c);
62         }
63         c = p.loadClass(is);
64         c.getDeclaredFields();
65         BCMethod[] methods = c.getDeclaredMethods();
66         for (int i = 0; i < methods.length; ++i) {
67             Code code = methods[i].getCode(false);
68             if (code != null) {
69                 while (code.hasNext()) {
70                     code.next();
71                 }
72                 if (compute) {
73                     code.calculateMaxStack();
74                     code.calculateMaxLocals();
75                 }
76             }
77         }
78         return c.toByteArray();
79     }
80
81     byte[] counterAdaptClass(final InputStream JavaDoc is, final String JavaDoc name)
82             throws Exception JavaDoc
83     {
84         if (c != null) {
85             p.removeClass(c);
86         }
87         c = p.loadClass(is);
88         c.getDeclaredFields();
89         if (!c.isInterface()) {
90             c.declareField("_counter", "I");
91         }
92         BCMethod[] methods = c.getDeclaredMethods();
93         for (int i = 0; i < methods.length; ++i) {
94             BCMethod m = methods[i];
95             if (!m.getName().equals("<init>") && !m.isStatic()
96                     && !m.isAbstract() && !m.isNative())
97             {
98                 Code code = m.getCode(false);
99                 if (code != null) {
100                     code.aload().setLocal(0);
101                     code.aload().setLocal(0);
102                     code.getfield().setField(name, "_counter", "I");
103                     code.constant().setValue(1);
104                     code.iadd();
105                     code.putfield().setField(name, "_counter", "I");
106                     code.setMaxStack(Math.max(code.getMaxStack(), 2));
107                 }
108             }
109         }
110         return c.toByteArray();
111     }
112 }
113
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