77 lines
2.6 KiB
Java
77 lines
2.6 KiB
Java
/*
|
|
* Licensed to the Apache Software Foundation (ASF) under one or more
|
|
* contributor license agreements. See the NOTICE file distributed with
|
|
* this work for additional information regarding copyright ownership.
|
|
* The ASF licenses this file to You under the Apache License, Version 2.0
|
|
* (the "License"); you may not use this file except in compliance with
|
|
* the License. You may obtain a copy of the License at
|
|
*
|
|
* http://www.apache.org/licenses/LICENSE-2.0
|
|
*
|
|
* Unless required by applicable law or agreed to in writing, software
|
|
* distributed under the License is distributed on an "AS IS" BASIS,
|
|
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
* See the License for the specific language governing permissions and
|
|
* limitations under the License.
|
|
*/
|
|
package org.apache.tomcat.util.bcel;
|
|
|
|
import java.io.File;
|
|
import java.io.IOException;
|
|
import java.io.InputStream;
|
|
import java.net.URL;
|
|
import java.util.HashSet;
|
|
import java.util.Locale;
|
|
import java.util.Set;
|
|
|
|
import org.junit.Assert;
|
|
import org.junit.Test;
|
|
|
|
import org.apache.tomcat.Jar;
|
|
import org.apache.tomcat.util.bcel.classfile.ClassParser;
|
|
import org.apache.tomcat.util.scan.JarFactory;
|
|
|
|
public class TesterPerformance {
|
|
|
|
private static final String JAR_LOCATION = "/tmp/jira-libs";
|
|
|
|
@Test
|
|
public void testClassParserPerformance() throws IOException {
|
|
File libDir = new File(JAR_LOCATION);
|
|
String[] libs = libDir.list();
|
|
|
|
Assert.assertNotNull(libs);
|
|
|
|
Set<URL> jarURLs = new HashSet<>();
|
|
|
|
for (String lib : libs) {
|
|
if (!lib.toLowerCase(Locale.ENGLISH).endsWith(".jar")) {
|
|
continue;
|
|
}
|
|
jarURLs.add(new URL("jar:" + new File (libDir, lib).toURI().toURL().toExternalForm() + "!/"));
|
|
}
|
|
|
|
long duration = 0;
|
|
|
|
for (URL jarURL : jarURLs) {
|
|
try (Jar jar = JarFactory.newInstance(jarURL)) {
|
|
jar.nextEntry();
|
|
String jarEntryName = jar.getEntryName();
|
|
while (jarEntryName != null) {
|
|
if (jarEntryName.endsWith(".class")) {
|
|
InputStream is = jar.getEntryInputStream();
|
|
long start = System.nanoTime();
|
|
ClassParser cp = new ClassParser(is);
|
|
cp.parse();
|
|
duration += System.nanoTime() - start;
|
|
}
|
|
jar.nextEntry();
|
|
jarEntryName = jar.getEntryName();
|
|
}
|
|
}
|
|
}
|
|
|
|
System.out.println("ClassParser performance test took: " + duration + " ns");
|
|
}
|
|
}
|