001/* 002 * HA-JDBC: High-Availability JDBC 003 * Copyright (c) 2004-2007 Paul Ferraro 004 * 005 * This library is free software; you can redistribute it and/or modify it 006 * under the terms of the GNU Lesser General Public License as published by the 007 * Free Software Foundation; either version 2.1 of the License, or (at your 008 * option) any later version. 009 * 010 * This library is distributed in the hope that it will be useful, but WITHOUT 011 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 012 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License 013 * for more details. 014 * 015 * You should have received a copy of the GNU Lesser General Public License 016 * along with this library; if not, write to the Free Software Foundation, 017 * Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 018 * 019 * Contact: ferraro@users.sourceforge.net 020 */ 021package net.sf.hajdbc.util.concurrent; 022 023import java.util.concurrent.Executors; 024import java.util.concurrent.ThreadFactory; 025 026/** 027 * ThreadFactory implementation that creates daemon threads. 028 * 029 * @author Paul Ferraro 030 * @since 1.1 031 */ 032public class DaemonThreadFactory implements ThreadFactory 033{ 034 private static ThreadFactory instance = new DaemonThreadFactory(); 035 036 private ThreadFactory factory = Executors.defaultThreadFactory(); 037 038 /** 039 * Returns single shared instance 040 * @return a ThreadFactory instance 041 */ 042 public static ThreadFactory getInstance() 043 { 044 return instance; 045 } 046 047 /** 048 * @see java.util.concurrent.ThreadFactory#newThread(java.lang.Runnable) 049 */ 050 @Override 051 public Thread newThread(Runnable runnable) 052 { 053 Thread thread = this.factory.newThread(runnable); 054 055 thread.setDaemon(true); 056 057 return thread; 058 } 059}