Linux内核稀奇古怪的宏

本文收集Linux内核中各种稀奇古怪的宏定义。

#define get_addr(type, member, mem_addr) (type*)(mem_addr - &(((type*)0)->member))

#define offsetof(TYPE, MEMBER) ((size_t) &((TYPE *)0)->MEMBER)

 

#define list_entry(ptr, type, member) \
        container_of(ptr, type, member)

 

#define container_of(ptr, type, member) ({                      \
        const typeof( ((type *)0)->member ) *__mptr = (ptr);    \
        (type *)( (char *)__mptr - offsetof(type,member) );})