三个非常使用的高速的内存分配函数.读者可以直接拷贝这三个函数到程序中去,使用Allocate()和My_Free()代替系统提供的alloc()和free()函数.-The use of three very high-speed memory allocation function. Readers can directly copy these three functions to the processes, the use of Allocate () and My_Free () to replace the system provides alloc () and free () function.