com.jianggujin.modulelink.util.JThreadFactory Maven / Gradle / Ivy

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/**
 * Copyright 2018 jianggujin (www.jianggujin.com).
 * 
 * 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.jianggujin.modulelink.util;

import java.io.Serializable;
import java.util.concurrent.ThreadFactory;

/**
 * 线程工厂
 * 
 * @author jianggujin
 *
 */
@SuppressWarnings("serial")
public class JThreadFactory implements ThreadFactory, Serializable {
   /**
    * 线程名称前缀
    */
   private String threadNamePrefix;
   /**
    * 线程优先级
    */
   private int threadPriority = Thread.NORM_PRIORITY;
   /**
    * 守护线程
    */
   private boolean daemon = false;
   /**
    * 线程组
    */
   private ThreadGroup threadGroup;
   /**
    * 线程个数
    */
   private int threadCount = 0;
   /**
    * 线程个数监视器
    */
   private final Object threadCountMonitor = new Object();

   public JThreadFactory() {
      this.threadNamePrefix = getDefaultThreadNamePrefix();
   }

   public JThreadFactory(String threadNamePrefix) {
      this.threadNamePrefix = (threadNamePrefix != null ? threadNamePrefix : getDefaultThreadNamePrefix());
   }

   public Thread newThread(Runnable runnable) {
      return createThread(runnable);
   }

   /**
    * 设置线程名称前缀
    * 
    * @param threadNamePrefix
    */
   public void setThreadNamePrefix(String threadNamePrefix) {
      this.threadNamePrefix = (threadNamePrefix != null ? threadNamePrefix : getDefaultThreadNamePrefix());
   }

   /**
    * 获得线程名称前缀
    * 
    * @return
    */
   public String getThreadNamePrefix() {
      return this.threadNamePrefix;
   }

   /**
    * 设置线程优先级，默认为{@link Thread#NORM_PRIORITY}
    * 
    * @param threadPriority
    */
   public void setThreadPriority(int threadPriority) {
      this.threadPriority = threadPriority;
   }

   /**
    * 获得线程优先级
    * 
    * @return
    */
   public int getThreadPriority() {
      return this.threadPriority;
   }

   /**
    * 设置是否应该创建守护线程
    * 
    * @param daemon
    */
   public void setDaemon(boolean daemon) {
      this.daemon = daemon;
   }

   /**
    * 获得是否应该创建守护线程
    * 
    * @return
    */
   public boolean isDaemon() {
      return this.daemon;
   }

   /**
    * 指定要创建的线程的线程组名称
    * 
    * @param name
    */
   public void setThreadGroupName(String name) {
      this.threadGroup = new ThreadGroup(name);
   }

   /**
    * 指定要创建的线程的线程组
    * 
    * @param threadGroup
    */
   public void setThreadGroup(ThreadGroup threadGroup) {
      this.threadGroup = threadGroup;
   }

   /**
    * 获得线程组
    * 
    * @return
    */
   public ThreadGroup getThreadGroup() {
      return this.threadGroup;
   }

   /**
    * 创建线程
    * 
    * @param runnable
    * @return
    */
   public Thread createThread(Runnable runnable) {
      Thread thread = new Thread(getThreadGroup(), runnable, nextThreadName());
      thread.setPriority(getThreadPriority());
      thread.setDaemon(isDaemon());
      return thread;
   }

   /**
    * 获得下一个线程名称
    * 
    * @return
    */
   protected String nextThreadName() {
      int threadNumber = 0;
      synchronized (this.threadCountMonitor) {
         this.threadCount++;
         threadNumber = this.threadCount;
      }
      return getThreadNamePrefix() + threadNumber;
   }

   /**
    * 获得默认线程名称前缀
    * 
    * @return
    */
   protected String getDefaultThreadNamePrefix() {
      return "JMuduleLink-";
   }
}