/*
* JBoss, Home of Professional Open Source.
* Copyright 2016, Red Hat, Inc., and individual contributors
* as indicated by the @author tags. See the copyright.txt file in the
* distribution for a full listing of individual contributors.
*
* This is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation; either version 2.1 of
* the License, or (at your option) any later version.
*
* This software 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this software; if not, write to the Free
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA, or see the FSF site: http://www.fsf.org.
*/
package org.wildfly.clustering.service.concurrent;
import java.security.AccessController;
import java.security.PrivilegedAction;
import java.util.concurrent.ThreadFactory;
/**
* {@link ThreadFactory} decorator that associates a specific class loader to created threads.
* @author Paul Ferraro
*/
public class ClassLoaderThreadFactory implements ThreadFactory {
private final ThreadFactory factory;
private final ClassLoader loader;
public ClassLoaderThreadFactory(ThreadFactory factory, ClassLoader loader) {
this.factory = factory;
this.loader = loader;
}
@Override
public Thread newThread(Runnable r) {
Runnable task = () -> {
try {
r.run();
} finally {
// Defensively reset the TCCL
this.setContextClassLoader(Thread.currentThread());
}
};
return this.setContextClassLoader(this.factory.newThread(task));
}
private Thread setContextClassLoader(Thread thread) {
PrivilegedAction<Thread> action = () -> {
thread.setContextClassLoader(this.loader);
return thread;
};
return AccessController.doPrivileged(action);
}
}