linux内核中的算法

Knivo

1. #define container_of(ptr, type, member) ({ \
   
2.                const typeof( ((type *)0)->member ) * __mptr = (ptr); \
   
3.                (type *)( (char *)__mptr - offsetof(type,member) );})
   
4. 
   
5. #define offsetof(TYPE, MEMBER) ((size_t) &((TYPE *)0)->MEMBER)