mirror of
https://github.com/postgres/postgres.git
synced 2026-01-13 12:22:55 +03:00
8ec569479f
Up until now, we've had a policy of only marking certain variables in the PostgreSQL header files with PGDLLIMPORT, but now we've decided to mark them all. This means that extensions running on Windows should no longer operate at a disadvantage as compared to extensions running on Linux: if the variable is present in a header file, it should be accessible. Discussion: http://postgr.es/m/CA+TgmoYanc1_FSfimhgiWSqVyP5KKmh5NP2BWNwDhO8Pg2vGYQ@mail.gmail.com
79 lines
2.2 KiB
C
79 lines
2.2 KiB
C
/*--------------------------------------------------------------------------
|
|
* gin.h
|
|
* Public header file for Generalized Inverted Index access method.
|
|
*
|
|
* Copyright (c) 2006-2022, PostgreSQL Global Development Group
|
|
*
|
|
* src/include/access/gin.h
|
|
*--------------------------------------------------------------------------
|
|
*/
|
|
#ifndef GIN_H
|
|
#define GIN_H
|
|
|
|
#include "access/xlogreader.h"
|
|
#include "lib/stringinfo.h"
|
|
#include "storage/block.h"
|
|
#include "utils/relcache.h"
|
|
|
|
|
|
/*
|
|
* amproc indexes for inverted indexes.
|
|
*/
|
|
#define GIN_COMPARE_PROC 1
|
|
#define GIN_EXTRACTVALUE_PROC 2
|
|
#define GIN_EXTRACTQUERY_PROC 3
|
|
#define GIN_CONSISTENT_PROC 4
|
|
#define GIN_COMPARE_PARTIAL_PROC 5
|
|
#define GIN_TRICONSISTENT_PROC 6
|
|
#define GIN_OPTIONS_PROC 7
|
|
#define GINNProcs 7
|
|
|
|
/*
|
|
* searchMode settings for extractQueryFn.
|
|
*/
|
|
#define GIN_SEARCH_MODE_DEFAULT 0
|
|
#define GIN_SEARCH_MODE_INCLUDE_EMPTY 1
|
|
#define GIN_SEARCH_MODE_ALL 2
|
|
#define GIN_SEARCH_MODE_EVERYTHING 3 /* for internal use only */
|
|
|
|
/*
|
|
* GinStatsData represents stats data for planner use
|
|
*/
|
|
typedef struct GinStatsData
|
|
{
|
|
BlockNumber nPendingPages;
|
|
BlockNumber nTotalPages;
|
|
BlockNumber nEntryPages;
|
|
BlockNumber nDataPages;
|
|
int64 nEntries;
|
|
int32 ginVersion;
|
|
} GinStatsData;
|
|
|
|
/*
|
|
* A ternary value used by tri-consistent functions.
|
|
*
|
|
* This must be of the same size as a bool because some code will cast a
|
|
* pointer to a bool to a pointer to a GinTernaryValue.
|
|
*/
|
|
typedef char GinTernaryValue;
|
|
|
|
#define GIN_FALSE 0 /* item is not present / does not match */
|
|
#define GIN_TRUE 1 /* item is present / matches */
|
|
#define GIN_MAYBE 2 /* don't know if item is present / don't know
|
|
* if matches */
|
|
|
|
#define DatumGetGinTernaryValue(X) ((GinTernaryValue)(X))
|
|
#define GinTernaryValueGetDatum(X) ((Datum)(X))
|
|
#define PG_RETURN_GIN_TERNARY_VALUE(x) return GinTernaryValueGetDatum(x)
|
|
|
|
/* GUC parameters */
|
|
extern PGDLLIMPORT int GinFuzzySearchLimit;
|
|
extern PGDLLIMPORT int gin_pending_list_limit;
|
|
|
|
/* ginutil.c */
|
|
extern void ginGetStats(Relation index, GinStatsData *stats);
|
|
extern void ginUpdateStats(Relation index, const GinStatsData *stats,
|
|
bool is_build);
|
|
|
|
#endif /* GIN_H */
|