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  • Committer: alvherre
  • Date: 2005-12-16 21:24:52 UTC
  • Revision ID: svn-v4:db760fc0-0f08-0410-9d63-cc6633f64896:trunk:1
Initial import of the REL8_0_3 sources from the Pgsql CVS repository.

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src/include/storage/itempos.h
 
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/*-------------------------------------------------------------------------
 
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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) 1996-2005, 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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 * $PostgreSQL: pgsql/src/include/storage/itempos.h,v 1.20 2004-12-31 22:03:42 pgsql 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 */