辅助线程

• Method returns , which has the effect of terminating the worker thread executing this method
  方法将返回，其效果相当于终止执行此方法的辅助线程。
• Method is synchronous and blocks the worker thread until the ui thread finishes its job
  方法同步并且阻塞辅助线程，直到用户界面线程完成其作业为止。
• Creates a secondary thread pool , or uses asynchronous processing , extra work will be required in
  ）增加其引用计数，创建辅助线程池，或者使用异步处理，则
• Alternatively , worker threads are used to perform background processing and do not use message loops
  另外，辅助线程用来执行后台处理而且不使用消息循环。
• When running , the secondary threads inside the object keep firing events through the connection point
  对象内部的辅助线程在运行时不断通过连接点激发事件。
• Each worker thread , when started , will use this argument as the entry point for the thread
  方法作为参数。每个辅助线程在启动时都将此参数用作线程的入口点。
• Function continues to execute code immediately while the worker thread simultaneously undergoes initialization
  函数将在辅助线程进行初始化的同时继续执行代码。
• The server - based timer is designed for use with worker threads in a multi - threaded environment
  基于服务器的计时器是为在多线程环境下与辅助线程一起使用而设计的。
• Without the communications between main thread and worker thread , cpu would be locked for a long time
  若没有主线程与辅助线程的通信， cpu将被阻塞很长一段时间。