linux - [C] 内核中的双向链表在上层应用是否会有问题？（list.h）

Question

我将内核中的双向链表的list.h文件放到上层使用（目前在Ubuntu系统上暂时未出现问题），是否会隐含着一些问题？？？

由于list.h里面使用到了内核的一些头文件不能包括在上层应用中，我将一些宏直接移植到了list.h里面，其它代码没有任何的变动。移植的宏如下：

#define prefetch(x) __builtin_prefetch(x)

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

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

有的文章在上层应用中使用list.h文件时，采用“在编译中使用‘-D KERNEL’开关‘欺骗’编译器”的方法是否妥当？（这与我单独将list.h文件提取到上层应用没有本质的区别）

Answer 1

There will be no problem. This is a GNU/c compiler extension, but be careful when using it. You cannot add the same node, otherwise a loop will be formed. In addition, the red-black tree of the kernel can also be used. The implementation of the structure is very detailed. Judging from my current use, I have not added any compilation options for this file. I only need to extract the list.h file and add the above macros

Answer 2

There will be no problem, this is purely using the characteristics of the C language and has nothing to do with the kernel