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79 lines
1.2 KiB
79 lines
1.2 KiB
/*++
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Copyright (c) 1993 Microsoft Corporation
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Module Name:
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BILINK.H
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Abstract:
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Management for doubly linked lists
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Author:
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George Joy
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Environment:
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32-bit 'C'
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Revision History:
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--*/// BILINK.H
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#ifndef _BILINK_
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#define _BILINK_
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#if !defined(offsetof)
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#define offsetof(type, field) ((int)(&((type *)0)->field))
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#endif
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typedef struct BILINK {
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struct BILINK *next;
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struct BILINK *prev;
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} BILINK;
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/* XLATOFF */
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#define EMPTY_BILINK(_pBilink) ((_pBilink)->next==(_pBilink))
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#ifdef DEBUG
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#define ASSERT_EMPTY_BILINK(_b) ASSERT((_b)->next==(_b))
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#else
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#define ASSERT_EMPTY_BILINK(_b)
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#endif
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// This only works for BILINKS that are the first item in a structure.
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#define BilinkToList( _pBilink ) \
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(_pBilink)->prev->next=NULL;
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#define InitBilink( _pBilink ) \
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(_pBilink)->prev=(_pBilink)->next=(_pBilink);
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#ifdef DEBUG
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int FindObject(
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BILINK *link,
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BILINK *list
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);
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#endif
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void InsertAfter(
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BILINK *in,
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BILINK *after
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);
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void InsertBefore(
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BILINK *in,
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BILINK *before
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);
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void Delete(
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BILINK *p
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);
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/* XLATON */
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#endif
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