001/*
002 * (C) Copyright 2010-2015 Nuxeo SA (http://nuxeo.com/) and others.
003 *
004 * Licensed under the Apache License, Version 2.0 (the "License");
005 * you may not use this file except in compliance with the License.
006 * You may obtain a copy of the License at
007 *
008 *     http://www.apache.org/licenses/LICENSE-2.0
009 *
010 * Unless required by applicable law or agreed to in writing, software
011 * distributed under the License is distributed on an "AS IS" BASIS,
012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013 * See the License for the specific language governing permissions and
014 * limitations under the License.
015 *
016 * Contributors:
017 *     Benoit Delbosc
018 *     Julien Carsique
019 *
020 */
021
022package org.nuxeo.launcher.daemon;
023
024import java.util.concurrent.ThreadFactory;
025import java.util.concurrent.atomic.AtomicInteger;
026
027/**
028 * A factory to create daemon thread, this prevents the JVM to hang on exit waiting for non-daemon threads to finish.
029 *
030 * @author ben
031 * @since 5.4.2
032 */
033public class DaemonThreadFactory implements ThreadFactory {
034
035    private static final AtomicInteger count = new AtomicInteger(0);
036
037    private String basename;
038
039    private boolean isDaemon;
040
041    /**
042     * @param basename String to use in thread name
043     */
044    public DaemonThreadFactory(String basename) {
045        this(basename, true);
046    }
047
048    /**
049     * @param basename String to use in thread name
050     * @param isDaemon Will created threads be set as daemon ?
051     */
052    public DaemonThreadFactory(String basename, boolean isDaemon) {
053        this.basename = basename;
054        this.isDaemon = isDaemon;
055    }
056
057    /**
058     * New daemon thread.
059     */
060    @Override
061    public Thread newThread(final Runnable runnable) {
062        final Thread thread = new Thread(runnable, basename + "-" + count.getAndIncrement());
063        thread.setDaemon(isDaemon);
064        return thread;
065    }
066
067}