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/*-------------------------------------------------------------------------
*
* vacuum.h--
* header file for postgres vacuum cleaner
*
*
* Copyright (c) 1994, Regents of the University of California
*
* $Id: vacuum.h,v 1.7 1997/04/23 06:28:48 vadim Exp $
*
*-------------------------------------------------------------------------
*/
#ifndef VACUUM_H
#define VACUUM_H
#include <access/funcindex.h>
#include <catalog/pg_index.h>
typedef struct VAttListData {
int val_dummy;
struct VAttListData *val_next;
} VAttListData;
typedef VAttListData *VAttList;
typedef struct VPageDescrData {
BlockNumber vpd_blkno; /* BlockNumber of this Page */
Size vpd_free; /* FreeSpace on this Page */
uint16 vpd_nusd; /* Number of OffNums used by vacuum */
uint16 vpd_noff; /* Number of OffNums free or to be free */
OffsetNumber vpd_voff[1]; /* Array of its OffNums */
} VPageDescrData;
typedef VPageDescrData *VPageDescr;
typedef struct VPageListData {
int vpl_nemend; /* Number of "empty" end-pages */
int vpl_npages; /* Number of pages in vpl_pgdesc */
VPageDescr *vpl_pgdesc; /* Descriptions of pages */
} VPageListData;
typedef VPageListData *VPageList;
typedef struct {
FuncIndexInfo finfo;
FuncIndexInfo *finfoP;
IndexTupleForm tform;
int natts;
} IndDesc;
typedef struct {
AttributeTupleForm attr;
Datum best, guess1, guess2, max, min;
int16 best_len, guess1_len, guess2_len, max_len, min_len;
int32 best_cnt, guess1_cnt, guess1_hits, guess2_hits, null_cnt,nonnull_cnt;
int32 max_cnt, min_cnt;
func_ptr f_cmpeq, f_cmplt, f_cmpgt;
regproc outfunc;
bool initialized;
} VacAttrStats;
typedef struct VRelListData {
Oid vrl_relid;
struct VRelListData *vrl_next;
} VRelListData;
typedef VRelListData *VRelList;
typedef struct VRelStats {
Oid relid;
int ntups;
int npages;
Size min_tlen;
Size max_tlen;
bool hasindex;
int va_natts; /* number of attrs being analyzed */
VacAttrStats *vacattrstats;
} VRelStats;
extern bool VacuumRunning;
extern void vc_abort(void);
extern void vacuum(char *vacrel, bool verbose, bool analyze, List *va_spec);
#define ATTNVALS_SCALE 1000000000 /* XXX so it can act as a float4 */
#endif /* VACUUM_H */
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