content: /*
   * Copyright 1999-2012 Alibaba Group.
   *  
   * 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 com.alibaba.cobar.util;
  
  import java.util.concurrent.LinkedBlockingQueue;
  import java.util.concurrent.ThreadFactory;
  import java.util.concurrent.atomic.AtomicInteger;
  
  /**
   * @author xianmao.hexm
   */
  public class ExecutorUtil {
  
      public static final NameableExecutor create(String name, int size) {
          return create(name, size, true);
      }
  
      public static final NameableExecutor create(String name, int size, boolean isDaemon) {
          NameableThreadFactory factory = new NameableThreadFactory(name, isDaemon);
          return new NameableExecutor(name, size, new LinkedBlockingQueue<Runnable>(), factory);
      }
  
      private static class NameableThreadFactory implements ThreadFactory {
          private final ThreadGroup group;
          private final String namePrefix;
          private final AtomicInteger threadId;
          private final boolean isDaemon;
  
          public NameableThreadFactory(String name, boolean isDaemon) {
              SecurityManager s = System.getSecurityManager();
              this.group = (s != null) ? s.getThreadGroup() : Thread.currentThread().getThreadGroup();
              this.namePrefix = name;
              this.threadId = new AtomicInteger(0);
              this.isDaemon = isDaemon;
          }
  
          public Thread newThread(Runnable r) {
              Thread t = new Thread(group, r, namePrefix + threadId.getAndIncrement());
              t.setDaemon(isDaemon);
              if (t.getPriority() != Thread.NORM_PRIORITY) {
                  t.setPriority(Thread.NORM_PRIORITY);
              }
              return t;
          }
      }
  
  }
  