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Bruce Momjian
46 lines
1.0 KiB
C
46 lines
1.0 KiB
C
/*-------------------------------------------------------------------------
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*
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* itempos.h
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* Standard POSTGRES buffer page long item subposition definitions.
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*
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*
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* Portions Copyright (c) 1996-2001, PostgreSQL Global Development Group
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* Portions Copyright (c) 1994, Regents of the University of California
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*
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* $Id: itempos.h,v 1.12 2001/01/24 19:43:27 momjian Exp $
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*
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*-------------------------------------------------------------------------
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*/
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#ifndef ITEMPOS_H
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#define ITEMPOS_H
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#include "storage/buf.h"
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#include "storage/itemid.h"
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typedef struct ItemSubpositionData
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{
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Buffer op_db;
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ItemId op_lpp;
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char *op_cp; /* XXX */
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uint32 op_len;
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} ItemSubpositionData;
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typedef ItemSubpositionData *ItemSubposition;
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/*
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* PNOBREAK(OBJP, LEN)
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* struct objpos *OBJP;
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* unsigned LEN;
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*/
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#define PNOBREAK(OBJP, LEN) ((OBJP)->op_len >= LEN)
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/*
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* PSKIP(OBJP, LEN)
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* struct objpos *OBJP;
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* unsigned LEN;
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*/
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#define PSKIP(OBJP, LEN)\
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do { (OBJP)->op_cp += (LEN); (OBJP)->op_len -= (LEN); } while (0)
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#endif /* ITEMPOS_H */
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