说明：  Vxworks的任务就是竞争系统资源的（特别是硬件资源）的最小单位，可以动态的创建、删除、任务状态改变等，函数是任务的灵魂！当你编写函数后，你才可以使用任务创建函数来创建一个具有自己特征（自己的参数值）的任务
(Vxworks competition is the task of system resources (especially hardware resources) the smallest unit, The dynamic can create, delete, change the state mandate, the mandate is the function of the soul! When you prepare function, You can use a mandate to create a function to create its own characteristics (their parameter values) of the task)