container_of.h File Reference

container_of definition More...

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Macros
#define	container_of(ptr, type, member)
	Obtain a pointer to the struct that contains the member.

Detailed Description

container_of definition

For more info, see:

• https://radek.io/posts/magical-container_of-macro/
• https://github.com/clibs/container_of

Macro Definition Documentation

container_of

#define container_of	(		ptr,
			type,
			member )

Value:

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

Obtain a pointer to the struct that contains the member.

Parameters

[in]	ptr	Pointer to the member.
[in]	type	Container type
[in]	member	Member name.

Returns

A pointer to the struct containing the member.