在ubuntu内下载源代码并找到宏源码
vim -t offsetof
987 #ifndef offsetof
988 # define offsetof(typ, memb) ((unsigned long)((char *)&(((typ *)0)->memb)))
989 #endifvim -t container_of
240 /**
241 * Returns a pointer to the container of this list element.
242 *
243 * Example:
244 * struct foo* f;
245 * f = container_of(&foo->entry, struct foo, entry);
246 * assert(f == foo);
247 *
248 * @param ptr Pointer to the struct list_head.
249 * @param type Data type of the list element.
250 * @param member Member name of the struct list_head field in the list element.
251 * @return A pointer to the data struct containing the list head.
252 */
253 #ifndef container_of
254 #define container_of(ptr, type, member) \
255 (type *)((char *)(ptr) - (char *) &((type *)0)->member)
256 #endif确实巧妙
标签：container,struct,第一,list,char,linux,foo,type From： https://www.cnblogs.com/aker-whale/p/18367159