说明：  LINUX C++开发的写日志函数源嘛，在新的项目中可以直接方便的使用只需要调用WriteLog就函数就行了。日志分成三级：debug，normal，alert
(LINUX C++ Developed to write the log function of the source of them, in the new project can be direct and convenient to use only need to call on the WriteLog function on the list. The log is divided into three levels: debug, normal, alert)