1996-08-27 23:50:29 +02:00
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/*-------------------------------------------------------------------------
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*
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* heapam.h--
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* POSTGRES heap access method definitions.
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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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1996-11-05 08:22:50 +01:00
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* $Id: heapam.h,v 1.5 1996/11/05 07:22:50 scrappy Exp $
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1996-08-27 23:50:29 +02:00
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*
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*-------------------------------------------------------------------------
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*/
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#ifndef HEAPAM_H
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#define HEAPAM_H
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1996-11-05 08:22:50 +01:00
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#include <access/relscan.h>
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1996-08-27 23:50:29 +02:00
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/* ----------------------------------------------------------------
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* heap access method statistics
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* ----------------------------------------------------------------
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*/
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typedef struct HeapAccessStatisticsData {
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time_t init_global_timestamp; /* time global statistics started */
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time_t local_reset_timestamp; /* last time local reset was done */
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time_t last_request_timestamp; /* last time stats were requested */
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int global_open;
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int global_openr;
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int global_close;
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int global_beginscan;
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int global_rescan;
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int global_endscan;
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int global_getnext;
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int global_fetch;
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int global_insert;
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int global_delete;
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int global_replace;
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int global_markpos;
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int global_restrpos;
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int global_BufferGetRelation;
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int global_RelationIdGetRelation;
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int global_RelationIdGetRelation_Buf;
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int global_RelationNameGetRelation;
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int global_getreldesc;
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int global_heapgettup;
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int global_RelationPutHeapTuple;
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int global_RelationPutLongHeapTuple;
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int local_open;
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int local_openr;
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int local_close;
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int local_beginscan;
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int local_rescan;
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int local_endscan;
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int local_getnext;
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int local_fetch;
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int local_insert;
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int local_delete;
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int local_replace;
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int local_markpos;
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int local_restrpos;
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int local_BufferGetRelation;
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int local_RelationIdGetRelation;
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int local_RelationIdGetRelation_Buf;
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int local_RelationNameGetRelation;
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int local_getreldesc;
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int local_heapgettup;
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int local_RelationPutHeapTuple;
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int local_RelationPutLongHeapTuple;
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} HeapAccessStatisticsData;
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typedef HeapAccessStatisticsData *HeapAccessStatistics;
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#define IncrHeapAccessStat(x) \
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(heap_access_stats == NULL ? 0 : (heap_access_stats->x)++)
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extern HeapAccessStatistics heap_access_stats; /* in stats.c */
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/* ----------------
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* function prototypes for heap access method
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* ----------------
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*/
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/* heap_create, heap_creatr, and heap_destroy are declared in catalog/heap.h */
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/* heapam.c */
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extern void doinsert(Relation relation, HeapTuple tup);
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extern void SetHeapAccessMethodImmediateInvalidation(bool on);
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extern Relation heap_open(Oid relationId);
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extern Relation heap_openr(char *relationName);
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extern void heap_close(Relation relation);
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extern HeapScanDesc heap_beginscan(Relation relation, int atend,
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TimeQual timeQual, unsigned nkeys, ScanKey key);
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extern void heap_rescan(HeapScanDesc sdesc, bool scanFromEnd, ScanKey key);
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extern void heap_endscan(HeapScanDesc sdesc);
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extern HeapTuple heap_getnext(HeapScanDesc scandesc, int backw, Buffer *b);
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extern HeapTuple heap_fetch(Relation relation, TimeQual timeQual,
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ItemPointer tid, Buffer *b);
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extern Oid heap_insert(Relation relation, HeapTuple tup);
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extern void heap_delete(Relation relation, ItemPointer tid);
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extern int heap_replace(Relation relation, ItemPointer otid,
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HeapTuple tup);
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extern void heap_markpos(HeapScanDesc sdesc);
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extern void heap_restrpos(HeapScanDesc sdesc);
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/* in common/heaptuple.c */
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extern Size ComputeDataSize(TupleDesc tupleDesc, Datum value[], char nulls[]);
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extern void DataFill(char *data, TupleDesc tupleDesc,
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Datum value[], char nulls[], char *infomask,
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bits8 *bit);
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extern int heap_attisnull(HeapTuple tup, int attnum);
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extern int heap_sysattrlen(AttrNumber attno);
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extern bool heap_sysattrbyval(AttrNumber attno);
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extern char *heap_getsysattr(HeapTuple tup, Buffer b, int attnum);
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1996-09-23 10:36:39 +02:00
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extern char *fastgetattr(HeapTuple tup, int attnum,
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1996-08-27 23:50:29 +02:00
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TupleDesc att, bool *isnull);
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extern char *heap_getattr(HeapTuple tup, Buffer b, int attnum,
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TupleDesc att, bool *isnull);
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extern HeapTuple heap_copytuple(HeapTuple tuple);
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extern void heap_deformtuple(HeapTuple tuple, TupleDesc tdesc,
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Datum values[], char nulls[]);
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extern HeapTuple heap_formtuple(TupleDesc tupleDescriptor,
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Datum value[], char nulls[]);
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extern HeapTuple heap_modifytuple(HeapTuple tuple, Buffer buffer,
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Relation relation, Datum replValue[], char replNull[], char repl[]);
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HeapTuple heap_addheader(uint32 natts, int structlen, char *structure);
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/* in common/heap/stats.c */
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extern void InitHeapAccessStatistics(void);
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extern void ResetHeapAccessStatistics(void);
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extern HeapAccessStatistics GetHeapAccessStatistics(void);
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extern void PrintHeapAccessStatistics(HeapAccessStatistics stats);
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extern void PrintAndFreeHeapAccessStatistics(HeapAccessStatistics stats);
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extern void initam(void);
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#endif /* HEAPAM_H */
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