namablethreadfactory.java

来自「mysql集群」· Java 代码 · 共 45 行

/**
 * 
 */
/*
 * 	This program is free software; you can redistribute it and/or modify it under the terms of 
 * the GNU General Public License as published by the Free Software Foundation; either version 3 of the License, 
 * or (at your option) any later version. 
 * 
 * 	This program 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 for more details. 
 * 	You should have received a copy of the GNU General Public License along with this program; 
 * if not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 */
package com.meidusa.amoeba.util;

import java.util.concurrent.ThreadFactory;
import java.util.concurrent.atomic.AtomicInteger;

public class NamableThreadFactory implements ThreadFactory{
	static final AtomicInteger poolNumber = new AtomicInteger(1);
    final ThreadGroup group;
    final AtomicInteger threadNumber = new AtomicInteger(1);
    final String namePrefix;

    public NamableThreadFactory(String namePrefix) {
        SecurityManager s = System.getSecurityManager();
        group = (s != null)? s.getThreadGroup() :
                             Thread.currentThread().getThreadGroup();
        this.namePrefix = namePrefix== null?"Pool-" + 
                      poolNumber.getAndIncrement() + 
                     "-thread-":namePrefix;
    }

    public Thread newThread(Runnable r) {
        Thread t = new Thread(group, r, 
                              namePrefix + threadNumber.getAndIncrement(),
                              0);
        if (t.isDaemon())
            t.setDaemon(false);
        if (t.getPriority() != Thread.NORM_PRIORITY)
            t.setPriority(Thread.NORM_PRIORITY);
        return t;
    }
}