001 /**
002 * Licensed to the Apache Software Foundation (ASF) under one or more
003 * contributor license agreements. See the NOTICE file distributed with
004 * this work for additional information regarding copyright ownership.
005 * The ASF licenses this file to You under the Apache License, Version 2.0
006 * (the "License"); you may not use this file except in compliance with
007 * the License. You may obtain a copy of the License at
008 *
009 * http://www.apache.org/licenses/LICENSE-2.0
010 *
011 * Unless required by applicable law or agreed to in writing, software
012 * distributed under the License is distributed on an "AS IS" BASIS,
013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014 * See the License for the specific language governing permissions and
015 * limitations under the License.
016 */
017 package org.apache.camel.util.concurrent;
018
019 import java.util.concurrent.ExecutorService;
020 import java.util.concurrent.Executors;
021 import java.util.concurrent.ScheduledExecutorService;
022 import java.util.concurrent.ThreadFactory;
023 import java.util.concurrent.atomic.AtomicInteger;
024
025 /**
026 * Helper for {@link java.util.concurrent.ExecutorService} to construct executors using a thread factory that
027 * create thread names with Camel prefix.
028 *
029 * @version $Revision: 777808 $
030 */
031 public final class ExecutorServiceHelper {
032
033 private static AtomicInteger threadCounter = new AtomicInteger();
034
035 private ExecutorServiceHelper() {
036 }
037
038 /**
039 * Creates a new thread name with the given prefix
040 */
041 public static String getThreadName(String name) {
042 return "Camel thread " + nextThreadCounter() + ": " + name;
043 }
044
045 protected static synchronized int nextThreadCounter() {
046 return threadCounter.getAndIncrement();
047 }
048
049 public static ScheduledExecutorService newScheduledThreadPool(final int poolSize, final String name, final boolean daemon) {
050 return Executors.newScheduledThreadPool(poolSize, new ThreadFactory() {
051 public Thread newThread(Runnable r) {
052 Thread answer = new Thread(r, getThreadName(name));
053 answer.setDaemon(daemon);
054 return answer;
055 }
056 });
057 }
058
059 public static ExecutorService newFixedThreadPool(final int poolSize, final String name, final boolean daemon) {
060 return Executors.newFixedThreadPool(poolSize, new ThreadFactory() {
061 public Thread newThread(Runnable r) {
062 Thread answer = new Thread(r, getThreadName(name));
063 answer.setDaemon(daemon);
064 return answer;
065 }
066 });
067 }
068
069 public static ExecutorService newSingleThreadExecutor(final String name, final boolean daemon) {
070 return Executors.newSingleThreadExecutor(new ThreadFactory() {
071 public Thread newThread(Runnable r) {
072 Thread answer = new Thread(r, getThreadName(name));
073 answer.setDaemon(daemon);
074 return answer;
075 }
076 });
077 }
078
079 }