/*
* JBoss, Home of Professional Open Source
* Copyright 2006, Red Hat Middleware LLC, and individual contributors
* as indicated by the @author tags.
* See the copyright.txt in the distribution for a
* full listing of individual contributors.
* This copyrighted material is made available to anyone wishing to use,
* modify, copy, or redistribute it subject to the terms and conditions
* of the GNU Lesser General Public License, v. 2.1.
* This program is distributed in the hope that it will be useful, but WITHOUT A
* 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,
* v.2.1 along with this distribution; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
* MA 02110-1301, USA.
*
* (C) 2005-2006,
* @author JBoss Inc.
*/
/**
* Provides utilities to manage thread ids.
*/
public class ThreadUtil {
/**
* The ID associated with the thread.
*/
private static final ThreadLocal THREAD_ID = new ThreadLocal();
/**
* The thread id counter.
*/
private static long id;
/**
* Get the string ID for the current thread.
*
* @return The thread id
*/
public static String getThreadId() {
return getThreadId(Thread.currentThread());
}
/**
* Get the string ID for the specified thread.
*
* @param thread
* The thread.
* @return The thread id
*/
public static String getThreadId(final Thread thread) {
final Object id = THREAD_ID.get();
if (id != null) {
return (String) id;
}
final String newId = getNextId();
THREAD_ID.set(newId);
return newId;
}
/**
* Get the next thread id to use.
*
* @return The next thread id.
*/
private static synchronized String getNextId() {
return "TSThread:" + Long.toHexString(++id);
}
}