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434201d8d7
Note. all include files that have been hit so far have had extraneous
include files cleaned out and are reduced to...the lowest common
"include file", based on 'cc -Wall -I. test.c', where test.c is:
#include "postgres.h"
#include "<top of branches>" (ie. top of branches this time was utils/fcache2.h)
77 lines
2.2 KiB
C
77 lines
2.2 KiB
C
/*-------------------------------------------------------------------------
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*
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* tuptable.h--
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* tuple table support stuff
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*
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*
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* Copyright (c) 1994, Regents of the University of California
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*
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* $Id: tuptable.h,v 1.4 1996/11/04 08:52:47 scrappy Exp $
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*
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* NOTES
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* The tuple table interface is getting pretty ugly.
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* It should be redesigned soon.
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*
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*-------------------------------------------------------------------------
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*/
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#ifndef TUPTABLE_H
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#define TUPTABLE_H
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#include <storage/buf.h>
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#include <access/tupdesc.h>
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#include <access/htup.h>
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/* ----------------
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* Note: the executor tuple table is managed and manipulated by special
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* code and macros in executor/execTuples.c and tupTable.h
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*
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* TupleTableSlot information
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*
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* shouldFree boolean - should we call pfree() on tuple
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* descIsNew boolean - true when tupleDescriptor changes
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* tupleDescriptor type information kept regarding the tuple data
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* buffer the buffer for tuples pointing to disk pages
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*
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* The executor stores pointers to tuples in a ``tuple table''
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* which is composed of TupleTableSlot's. Some of the tuples
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* are pointers to buffer pages and others are pointers to
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* palloc'ed memory and the shouldFree variable tells us when
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* we may call pfree() on a tuple. -cim 9/23/90
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*
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* In the implementation of nested-dot queries such as
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* "retrieve (EMP.hobbies.all)", a single scan may return tuples
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* of many types, so now we return pointers to tuple descriptors
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* along with tuples returned via the tuple table. -cim 1/18/90
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* ----------------
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*/
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typedef struct TupleTableSlot {
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NodeTag type;
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HeapTuple val;
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bool ttc_shouldFree;
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bool ttc_descIsNew;
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TupleDesc ttc_tupleDescriptor;
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Buffer ttc_buffer;
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int ttc_whichplan;
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} TupleTableSlot;
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/* ----------------
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* tuple table data structure
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* ----------------
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*/
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typedef struct TupleTableData {
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int size; /* size of the table */
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int next; /* next available slot number */
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TupleTableSlot *array; /* array of TupleTableSlot's */
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} TupleTableData;
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typedef TupleTableData *TupleTable;
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/*
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tuple table macros are all excised from the system now
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see executor.h for decls of functions defined in execTuples.c
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- jolly
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*/
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#endif /* TUPTABLE_H */
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