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/*
* Copyright (c) 2013, 2018, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
import java.util.ArrayList;
import java.util.List;
import java.util.stream.Collectors;
import java.net.*;
import java.io.*;
import java.nio.file.FileSystem;
import java.nio.file.FileSystems;
import java.nio.file.FileSystemNotFoundException;
import java.nio.file.ProviderNotFoundException;
import java.nio.file.Files;
import java.nio.file.Path;
import java.util.function.Predicate;
abstract class Task<T> implements Runnable {
private transient boolean working = true;
private final List<T> methods;
private final Thread thread;
Task(List<T> methods) {
this.methods = methods;
this.thread = new Thread(this);
this.thread.start();
}
boolean isAlive() {
return this.thread.isAlive();
}
boolean isWorking() {
boolean working = this.working && this.thread.isAlive();
this.working = false;
return working;
}
@Override
public void run() {
long time = -System.currentTimeMillis();
for (T method : this.methods) {
this.working = true;
try {
for (int i = 0; i < 100; i++) {
process(method);
}
} catch (NoSuchMethodException ignore) {
}
}
time += System.currentTimeMillis();
print("thread done in " + time / 1000 + " seconds");
}
protected abstract void process(T method) throws NoSuchMethodException;
static synchronized void print(Object message) {
System.out.println(message);
System.out.flush();
}
static List<Class<?>> getClasses(int count) throws Exception {
List<Class<?>> classes = new ArrayList<>();
FileSystem fs = null;
try {
fs = FileSystems.getFileSystem(URI.create("jrt:/"));
} catch (ProviderNotFoundException | FileSystemNotFoundException e) {
throw new RuntimeException("FAIL - JRT Filesystem not found");
}
List<String> fileNames;
Path modules = fs.getPath("/modules");
Predicate<String> startsWithJavaBase = path -> path.toString().startsWith("java.base/java");
Predicate<String> startsWithJavaDesktop = path -> path.toString().startsWith("java.desktop/java");
Predicate<String> startsWithJavaDataTransfer = path -> path.toString().startsWith("java.datatransfer/java");
Predicate<String> startsWithJavaRMI = path -> path.toString().startsWith("java.rmi/java");
Predicate<String> startsWithJavaSmartCardIO = path -> path.toString().startsWith("java.smartcardio/java");
Predicate<String> startsWithJavaManagement = path -> path.toString().startsWith("java.management/java");
Predicate<String> startsWithJavaXML = path -> path.toString().startsWith("java.xml/java");
Predicate<String> startsWithJavaScripting = path -> path.toString().startsWith("java.scripting/java");
Predicate<String> startsWithJavaNaming = path -> path.toString().startsWith("java.naming/java");
Predicate<String> startsWithJavaSQL = path -> path.toString().startsWith("java.sql/java");
Predicate<String> startsWithJavaCompiler = path -> path.toString().startsWith("java.compiler/java");
Predicate<String> startsWithJavaLogging = path -> path.toString().startsWith("java.logging/java");
Predicate<String> startsWithJavaPrefs = path -> path.toString().startsWith("java.prefs/java");
fileNames = Files.walk(modules)
.map(Path::toString)
.filter(path -> path.toString().contains("java"))
.map(s -> s.substring(9)) // remove /modules/ from beginning
.filter(startsWithJavaBase
.or(startsWithJavaDesktop)
.or(startsWithJavaDataTransfer)
.or(startsWithJavaRMI)
.or(startsWithJavaSmartCardIO)
.or(startsWithJavaManagement)
.or(startsWithJavaXML)
.or(startsWithJavaScripting)
.or(startsWithJavaNaming)
.or(startsWithJavaSQL)
.or(startsWithJavaCompiler)
.or(startsWithJavaLogging)
.or(startsWithJavaPrefs))
.map(s -> s.replace('/', '.'))
.filter(path -> path.toString().endsWith(".class"))
.map(s -> s.substring(0, s.length() - 6)) // drop .class
.map(s -> s.substring(s.indexOf(".")))
.filter(path -> path.toString().contains("java"))
.map(s -> s.substring(s.indexOf("java")))
.collect(Collectors.toList());
for (String name : fileNames) {
classes.add(Class.forName(name));
if (count == classes.size()) {
break;
}
}
return classes;
}
}
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