| /** |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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 com.datatorrent.common.util; |
| |
| import java.util.concurrent.ThreadFactory; |
| import java.util.concurrent.atomic.AtomicInteger; |
| |
| /** |
| * Class copy-pasted from java.util.concurrent.Executors and modified to meet our needs. |
| * |
| * @since 0.3.2 |
| */ |
| public class NameableThreadFactory implements ThreadFactory |
| { |
| private static final AtomicInteger poolNumber = new AtomicInteger(1); |
| private final ThreadGroup group; |
| private final AtomicInteger threadNumber = new AtomicInteger(1); |
| private final String namePrefix; |
| private final boolean isDaemon; |
| |
| public NameableThreadFactory(String groupname) |
| { |
| this(groupname, false); |
| } |
| |
| public NameableThreadFactory(String groupname, boolean isDaemon) |
| { |
| SecurityManager s = java.lang.System.getSecurityManager(); |
| group = (s != null) ? s.getThreadGroup() |
| : Thread.currentThread().getThreadGroup(); |
| namePrefix = groupname |
| + "-" |
| + poolNumber.getAndIncrement() |
| + "-"; |
| this.isDaemon = isDaemon; |
| } |
| |
| @Override |
| public Thread newThread(Runnable r) |
| { |
| Thread t = new Thread(group, r, namePrefix + threadNumber.getAndIncrement(), 0); |
| if (t.isDaemon() != this.isDaemon) { |
| t.setDaemon(isDaemon); |
| } |
| if (t.getPriority() != Thread.NORM_PRIORITY) { |
| t.setPriority(Thread.NORM_PRIORITY); |
| } |
| return t; |
| } |
| } |