001package org.apache.commons.jcs.utils.threadpool;
002
003/*
004 * Licensed to the Apache Software Foundation (ASF) under one
005 * or more contributor license agreements.  See the NOTICE file
006 * distributed with this work for additional information
007 * regarding copyright ownership.  The ASF licenses this file
008 * to you under the Apache License, Version 2.0 (the
009 * "License"); you may not use this file except in compliance
010 * with the License.  You may obtain a copy of the License at
011 *
012 *   http://www.apache.org/licenses/LICENSE-2.0
013 *
014 * Unless required by applicable law or agreed to in writing,
015 * software distributed under the License is distributed on an
016 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
017 * KIND, either express or implied.  See the License for the
018 * specific language governing permissions and limitations
019 * under the License.
020 */
021
022import java.util.concurrent.ThreadFactory;
023
024/**
025 * Allows us to set the daemon status on the threads.
026 * <p>
027 * @author aaronsm
028 */
029public class DaemonThreadFactory
030    implements ThreadFactory
031{
032    private String prefix;
033    private boolean threadIsDaemon = true;
034    private int threadPriority = Thread.NORM_PRIORITY;
035
036    /**
037     * Constructor
038     *
039     * @param prefix thread name prefix
040     */
041    public DaemonThreadFactory(String prefix)
042    {
043        this(prefix, Thread.NORM_PRIORITY);
044    }
045
046    /**
047     * Constructor
048     *
049     * @param prefix thread name prefix
050     * @param threadPriority set thread priority
051     */
052    public DaemonThreadFactory(String prefix, int threadPriority)
053    {
054        this.prefix = prefix;
055        this.threadPriority = threadPriority;
056    }
057
058    /**
059     * Sets the thread to daemon.
060     * <p>
061     * @param runner
062     * @return a daemon thread
063     */
064    @Override
065    public Thread newThread( Runnable runner )
066    {
067        Thread t = new Thread( runner );
068        String oldName = t.getName();
069        t.setName( prefix + oldName );
070        t.setDaemon(threadIsDaemon);
071        t.setPriority(threadPriority);
072        return t;
073    }
074}