24 lines
656 B
C
24 lines
656 B
C
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#ifndef COMMON_H
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#define COMMON_H
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#define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0]))
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#ifndef offsetof
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#define offsetof(TYPE, MEMBER) ((size_t) &((TYPE *)0)->MEMBER)
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#endif
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/**
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* container_of - cast a member of a structure out to the containing structure
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* @ptr: the pointer to the member.
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* @type: the type of the container struct this is embedded in.
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* @member: the name of the member within the struct.
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*
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*/
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#define container_of(ptr, type, member) ({ \
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const typeof(((type *)0)->member) * __mptr = (ptr); \
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(type *)((char *)__mptr - offsetof(type, member)); })
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#define UNUSED(var) {(void)var;}
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#endif /*COMMON_H*/
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