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1
30 package org.objectweb.asm.xml;
31
32 import java.io.BufferedInputStream  ;
33 import java.io.File ;
34 import java.io.FileInputStream ;
35 import java.io.IOException ;
36 import java.io.InputStream ;
37 import java.io.OutputStream ;
38 import java.net.URL ;
39
40 import javax.xml.transform.Source ;
41 import javax.xml.transform.stream.StreamSource ;
42
43
48 public class XMLPerfTest {
49
50 private static final String [] ENGINES = {
51 "jd.xml.xslt.trax.TransformerFactoryImpl",
52 "net.sf.saxon.TransformerFactoryImpl",
53 "org.apache.xalan.processor.TransformerFactoryImpl", };
54
55 private static final String [] TEMPLATES = {
56 "copy.xsl",
57 "linenumbers.xsl",
58 "profile.xsl", };
59
60 public static void main(String [] args) throws Exception {
61 System.err.println("Comparing XSLT performance for ASM XSLT");
62 System.err.println("This may take 20 to 30 minutes\n");
63
64 File examplesDir = new File (args[0]);
65 if (!examplesDir.isDirectory()) {
66 System.err.println(args[0] + " must be directory");
67 return;
68 }
69
70
76 for (int i = 0; i < ENGINES.length; i++) {
77 System.err.println(ENGINES[i]);
78 process(null, ENGINES[i]);
79 for (int j = 0; j < TEMPLATES.length; j++) {
80 process(new File (examplesDir, TEMPLATES[j]).getAbsolutePath(),
81 ENGINES[i]);
82 }
83 System.err.println();
84 }
85
86 }
87
88 private static void process(String name, String engine) throws Exception {
89 System.setProperty("javax.xml.transform.TransformerFactory", engine);
90 processRep(name, Processor.BYTECODE);
91 processRep(name, Processor.MULTI_XML);
92 processRep(name, Processor.SINGLE_XML);
93 }
94
95
117 private static void processRep(String name, int outRep) {
118 long l1 = System.currentTimeMillis();
119 int n = 0;
120 try {
121 Class c = XMLPerfTest.class;
122 String u = c.getResource("/java/lang/String.class").toString();
123 final InputStream is = new BufferedInputStream (new URL (u.substring(4,
124 u.indexOf('!'))).openStream());
125 final OutputStream os = new IgnoringOutputStream();
126 final StreamSource xslt = name == null
127 ? null
128 : new StreamSource (new FileInputStream (name));
129
130 Processor p = new DotObserver(Processor.BYTECODE,
131 outRep,
132 is,
133 os,
134 xslt);
135 n = p.process();
136
137 } catch (Exception ex) {
138 System.err.println();
139 System.err.println(ex);
141
142 }
143
144 long l2 = System.currentTimeMillis();
145
146 System.err.println();
147 System.err.println(" " + outRep + " " + name + " " + (l2 - l1)
148 + "ms " + (1000f * n / (l2 - l1)));
149
150 }
164
165 private static final class DotObserver extends Processor {
166 private int n = 0;
167
168 public DotObserver(
169 int inRepresenation,
170 int outRepresentation,
171 InputStream input,
172 OutputStream output,
173 Source xslt)
174 {
175 super(inRepresenation, outRepresentation, input, output, xslt);
176 }
177
178 public void update(Object arg) {
179 n++;
180 if ((n % 1000) == 0) {
181 System.err.print("" + (n / 1000));
182 } else if ((n % 100) == 0) {
183 System.err.print(".");
184 }
185 }
186 }
187
188 private static final class IgnoringOutputStream extends OutputStream {
189
190 public final void write(int b) throws IOException {
191 }
192
193 public final void write(byte[] b) throws IOException {
194 }
195
196 public final void write(byte[] b, int off, int len) throws IOException {
197 }
198 }
199 }
200 |
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