container_of宏

---

title: container_of宏
date: 2019/7/24 15:49:26
toc: true
---

container_of宏

解析

#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) );})  


#define list_entry(link, type, member) \
    ((type *)((char *)(link)-(unsigned long)(&((type *)0)->member)))

const typeof( ((type *)0)->member ) *__mptr = (ptr);

参考链接

offsetof与container_of宏总结

list_entry的宏定义

内核链表