mirror of
https://github.com/postgres/postgres.git
synced 2025-09-05 02:22:28 +03:00
2fbdebc248
This reverts commit cb2fd7eac2. Per
numerous buildfarm members, it was incompatible with parallel query, and
a test case assumed LP64. Back-patch to 9.5 (all supported versions).
Discussion: https://postgr.es/m/20200321224920.GB1763544@rfd.leadboat.com
70 lines
2.1 KiB
C
70 lines
2.1 KiB
C
/*-------------------------------------------------------------------------
|
|
*
|
|
* gistxlog.h
|
|
* gist xlog routines
|
|
*
|
|
* Portions Copyright (c) 1996-2018, PostgreSQL Global Development Group
|
|
* Portions Copyright (c) 1994, Regents of the University of California
|
|
*
|
|
* src/include/access/gistxlog.h
|
|
*
|
|
*-------------------------------------------------------------------------
|
|
*/
|
|
#ifndef GIST_XLOG_H
|
|
#define GIST_XLOG_H
|
|
|
|
#include "access/gist.h"
|
|
#include "access/xlogreader.h"
|
|
#include "lib/stringinfo.h"
|
|
|
|
#define XLOG_GIST_PAGE_UPDATE 0x00
|
|
/* #define XLOG_GIST_NEW_ROOT 0x20 */ /* not used anymore */
|
|
#define XLOG_GIST_PAGE_SPLIT 0x30
|
|
/* #define XLOG_GIST_INSERT_COMPLETE 0x40 */ /* not used anymore */
|
|
#define XLOG_GIST_CREATE_INDEX 0x50
|
|
/* #define XLOG_GIST_PAGE_DELETE 0x60 */ /* not used anymore */
|
|
|
|
/*
|
|
* Backup Blk 0: updated page.
|
|
* Backup Blk 1: If this operation completes a page split, by inserting a
|
|
* downlink for the split page, the left half of the split
|
|
*/
|
|
typedef struct gistxlogPageUpdate
|
|
{
|
|
/* number of deleted offsets */
|
|
uint16 ntodelete;
|
|
uint16 ntoinsert;
|
|
|
|
/*
|
|
* In payload of blk 0 : 1. todelete OffsetNumbers 2. tuples to insert
|
|
*/
|
|
} gistxlogPageUpdate;
|
|
|
|
/*
|
|
* Backup Blk 0: If this operation completes a page split, by inserting a
|
|
* downlink for the split page, the left half of the split
|
|
* Backup Blk 1 - npage: split pages (1 is the original page)
|
|
*/
|
|
typedef struct gistxlogPageSplit
|
|
{
|
|
BlockNumber origrlink; /* rightlink of the page before split */
|
|
GistNSN orignsn; /* NSN of the page before split */
|
|
bool origleaf; /* was splitted page a leaf page? */
|
|
|
|
uint16 npage; /* # of pages in the split */
|
|
bool markfollowright; /* set F_FOLLOW_RIGHT flags */
|
|
|
|
/*
|
|
* follow: 1. gistxlogPage and array of IndexTupleData per page
|
|
*/
|
|
} gistxlogPageSplit;
|
|
|
|
extern void gist_redo(XLogReaderState *record);
|
|
extern void gist_desc(StringInfo buf, XLogReaderState *record);
|
|
extern const char *gist_identify(uint8 info);
|
|
extern void gist_xlog_startup(void);
|
|
extern void gist_xlog_cleanup(void);
|
|
extern void gist_mask(char *pagedata, BlockNumber blkno);
|
|
|
|
#endif
|