Hallo, dies ist ein Test.

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/*
 * Copyright (c) 2013, 2015, Oracle and/or its affiliates. All rights reserved.
 */

#ifndef	_VM_UTIL_IMPL_H
#define	_VM_UTIL_IMPL_H

#include <vm/types.h>
#include <vm/util.h>

#ifdef	__cplusplus
extern "C" {
#endif

/*
 * Eventually, this will have a "sgl_t *sgl_next" field, so that multiple SGLs
 * can be linked together.
 */
struct sgl {
	uint32_t	sgl_flags;
	uint16_t	sgl_size;	/* sgl_off[] slots allocated */
	uint16_t	sgl_count;	/* sgl_off[] slots used */
	u_offset_t	sgl_offset[1];	/* flexible array; see note */
};
#define	SGL_SIZE(noff) (offsetof(sgl_t, sgl_offset[(noff)]))

/*
 * Offsets in an SGL are [base, base + (1ull << shift)), where shift is
 * encoded in the low bits of sgl_offset, and is at least SZC_SHIFT(SZC_MIN)).
 * base must be a multiple of (1ull << shift).
 */
#define	SGL_SHIFT_MASK ((u_offset_t)64 - 1)
#define	SGL_ENCODE(offset, shift) \
	(((offset) & ~SGL_SHIFT_MASK) | ((shift) & SGL_SHIFT_MASK))
#define	SGL_DECODE_OFF(v)  ((v) & ~SGL_SHIFT_MASK)
#define	SGL_DECODE_SHIFT(v)  ((v) & SGL_SHIFT_MASK)

typedef struct offiter_impl {
	u_offset_t	offi_base;	/* smallest offset */
	u_offset_t	offi_bound;	/* largest offset */
	const sgl_t	*offi_sgl;	/* sgl we are iterating */
	size_t		offi_idx;	/* slot number we are processing */
} offiter_impl_t;

/*
 * internal-only for now: join two sorted offiters, producing the overlap
 */
typedef struct offiter_intersect_impl {
	offiter_t	oii_left;
	offiter_t	oii_right;
	u_offset_t	oii_lsoff;	/* current range from oii_left */
	u_offset_t	oii_leoff;
	u_offset_t	oii_rsoff;	/* current range from oii_right */
	u_offset_t	oii_reoff;
} offiter_intersect_impl_t;

#ifdef	__cplusplus
}
#endif

#endif	/* _VM_UTIL_IMPL_H */