[babeltrace.git] / include / babeltrace / compiler.h

#ifndef _BABELTRACE_COMPILER_H
#define _BABELTRACE_COMPILER_H

#include <stddef.h>	/* for offsetof */

#define MAYBE_BUILD_BUG_ON(cond) ((void)sizeof(char[1 - 2 * !!(cond)]))

#ifndef container_of
#define container_of(ptr, type, member)					\
	({								\
		const typeof(((type *)NULL)->member) * __ptr = (ptr);	\
		(type *)((char *)__ptr - offsetof(type, member));	\
	})
#endif

#endif /* _BABELTRACE_COMPILER_H */
Commit	Line	Data
d79865b9 MD	1	#ifndef _BABELTRACE_COMPILER_H
	2	#define _BABELTRACE_COMPILER_H
	3
334c0a83 MD	4	#include <stddef.h> /* for offsetof */
334c0a83 MD	5
d79865b9 MD	6	#define MAYBE_BUILD_BUG_ON(cond) ((void)sizeof(char[1 - 2 * !!(cond)]))
d79865b9 MD	7
fc93b2bd MD	8	#ifndef container_of
	9	#define container_of(ptr, type, member) \
	10	({ \
	11	const typeof(((type )NULL)->member) __ptr = (ptr); \
	12	(type )((char )__ptr - offsetof(type, member)); \
	13	})
	14	#endif
	15
d79865b9	16	#endif /* _BABELTRACE_COMPILER_H */