1 /*
2 * ModeShape (http://www.modeshape.org)
3 * See the COPYRIGHT.txt file distributed with this work for information
4 * regarding copyright ownership. Some portions may be licensed
5 * to Red Hat, Inc. under one or more contributor license agreements.
6 * See the AUTHORS.txt file in the distribution for a full listing of
7 * individual contributors.
8 *
9 * ModeShape is free software. Unless otherwise indicated, all code in ModeShape
10 * is licensed to you under the terms of the GNU Lesser General Public License as
11 * published by the Free Software Foundation; either version 2.1 of
12 * the License, or (at your option) any later version.
13 *
14 * ModeShape is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17 * Lesser General Public License for more details.
18 *
19 * You should have received a copy of the GNU Lesser General Public
20 * License along with this software; if not, write to the Free
21 * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
22 * 02110-1301 USA, or see the FSF site: http://www.fsf.org.
23 */
24 package org.modeshape.common.util;
25
26 import java.util.concurrent.Executors;
27 import java.util.concurrent.ThreadFactory;
28 import java.util.concurrent.atomic.AtomicInteger;
29
30 /**
31 * The thread factory that lets us adjust the names of the threads.
32 *
33 * @see Executors#defaultThreadFactory()
34 */
35 public class NamedThreadFactory implements ThreadFactory {
36 static final AtomicInteger poolNumber = new AtomicInteger(1);
37 final ThreadGroup group;
38 final AtomicInteger threadNumber = new AtomicInteger(1);
39 final String namePrefix;
40
41 public NamedThreadFactory( String poolName ) {
42 SecurityManager s = System.getSecurityManager();
43 group = (s != null) ? s.getThreadGroup() : Thread.currentThread().getThreadGroup();
44 namePrefix = (poolName != null && poolName.trim().length() != 0 ? poolName : "pool") + "-" + poolNumber.getAndIncrement()
45 + "-thread-";
46 }
47
48 public Thread newThread( Runnable r ) {
49 Thread t = new Thread(group, r, namePrefix + threadNumber.getAndIncrement(), 0);
50 if (t.isDaemon()) t.setDaemon(false);
51 if (t.getPriority() != Thread.NORM_PRIORITY) t.setPriority(Thread.NORM_PRIORITY);
52 return t;
53 }
54 }