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Ehcache is an open source, standards-based cache used to boost performance, offload the database and simplify scalability. Ehcache is robust, proven and full-featured and this has made it the most widely-used Java-based cache.

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/**
 *  Copyright Terracotta, Inc.
 *
 *  Licensed under the Apache License, Version 2.0 (the "License");
 *  you may not use this file except in compliance with the License.
 *  You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 */

package net.sf.ehcache.util;

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

/**
 * A {@link ThreadFactory} that sets names to the threads created by this factory. Threads created by this factory
 * will take names in the form of the string namePrefix + " thread-" + threadNum where threadNum is the 
 * count of threads created by this type of factory.
 * 
 * @author Abhishek Sanoujam
 * 
 */
public class NamedThreadFactory implements ThreadFactory {

    private static AtomicInteger threadNumber = new AtomicInteger(1);
    private final String namePrefix;
    private final boolean daemon;

    /**
     * Constructor accepting the prefix of the threads that will be created by this {@link ThreadFactory}
     * 
     * @param namePrefix
     *            Prefix for names of threads
     */
    public NamedThreadFactory(String namePrefix, boolean daemon) {
        this.namePrefix = namePrefix;
        this.daemon = daemon;

    }
    /**
     * Constructor accepting the prefix of the threads that will be created by this {@link ThreadFactory}
     *
     * @param namePrefix
     *            Prefix for names of threads
     */
    public NamedThreadFactory(String namePrefix) {
        this(namePrefix, false);
    }

    /**
     * Returns a new thread using a name as specified by this factory {@inheritDoc}
     */
    public Thread newThread(Runnable runnable) {
        final Thread thread = new Thread(runnable, namePrefix + " thread-" + threadNumber.getAndIncrement());
        thread.setDaemon(daemon);
        return thread;
    }

}