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22 lines
486 B
22 lines
486 B
#ifndef WFP_UTIL_CONTAINER_OF_H
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#define WFP_UTIL_CONTAINER_OF_H
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#ifndef __cplusplus
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#include <stddef.h>
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#else
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#include <cstddef>
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#endif
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#ifdef __GNUC__
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#define wfp_container_of(pointer, type, member) \
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({ \
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const typeof( ((type *)0)->member ) * __member = (pointer); \
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(type *)( (char *)__member - offsetof(type, member) ); \
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})
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#else
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#define wfp_container_of(pointer, type, member) \
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(type *) (((char *) pointer) - offsetof(type, member))
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#endif
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#endif
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