linux中断驱动程序的实现，我搞了很长时间爱你才搞出来-struct my_pipe

{

　　wait_queue_head_t inq,outq　/* read and write queues*/

　　char*buffer,*end　/* begin of buf，end of buf*/

　　int buffersize　/* used in pointer arithmetic*/

　　char*rp,*wp　/* where to read，where to write*/

　　int nreaders,nwriters　/* number of openings for r/w*/

　　struct semaphore sem　 /* mutual exclusion semaphore*/

　　struct cdev cdev　 /* Char device structure*/

}