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📁 ..
📄 amapi.h(6.3 KB)
📄 amvalidate.h(1.19 KB)
📄 attnum.h(1.52 KB)
📄 brin.h(948 B)
📄 brin_internal.h(3.3 KB)
📄 brin_page.h(2.68 KB)
📄 brin_pageops.h(1.28 KB)
📄 brin_revmap.h(1.23 KB)
📄 brin_tuple.h(3.05 KB)
📄 brin_xlog.h(3.28 KB)
📄 clog.h(1.54 KB)
📄 commit_ts.h(2.09 KB)
📄 genam.h(7.31 KB)
📄 generic_xlog.h(1.42 KB)
📄 gin.h(2.3 KB)
📄 gin_private.h(33.12 KB)
📄 gist.h(6.51 KB)
📄 gist_private.h(19.82 KB)
📄 gistscan.h(729 B)
📄 hash.h(13.54 KB)
📄 heapam.h(7.76 KB)
📄 heapam_xlog.h(12.61 KB)
📄 hio.h(1.26 KB)
📄 htup.h(3.16 KB)
📄 htup_details.h(28.31 KB)
📄 itup.h(4.36 KB)
📄 multixact.h(5.13 KB)
📄 nbtree.h(30.22 KB)
📄 parallel.h(2.28 KB)
📄 printtup.h(1.03 KB)
📄 reloptions.h(8.88 KB)
📄 relscan.h(5.63 KB)
📄 rewriteheap.h(1.79 KB)
📄 rmgr.h(609 B)
📄 rmgrlist.h(2.97 KB)
📄 sdir.h(1.43 KB)
📄 skey.h(6.26 KB)
📄 slru.h(5.49 KB)
📄 spgist.h(7.04 KB)
📄 spgist_private.h(21.82 KB)
📄 stratnum.h(2.67 KB)
📄 subtrans.h(973 B)
📄 sysattr.h(890 B)
📄 timeline.h(1.59 KB)
📄 transam.h(6.29 KB)
📄 tsmapi.h(2.55 KB)
📄 tupconvert.h(1.4 KB)
📄 tupdesc.h(4.36 KB)
📄 tupmacs.h(7.16 KB)
📄 tuptoaster.h(7.18 KB)
📄 twophase.h(1.82 KB)
📄 twophase_rmgr.h(1.24 KB)
📄 valid.h(1.4 KB)
📄 visibilitymap.h(1.77 KB)
📄 xact.h(12.29 KB)
📄 xlog.h(10.91 KB)
📄 xlog_fn.h(1.41 KB)
📄 xlog_internal.h(10.29 KB)
📄 xlogdefs.h(3.11 KB)
📄 xloginsert.h(2.28 KB)
📄 xlogreader.h(7.11 KB)
📄 xlogrecord.h(7.76 KB)
📄 xlogutils.h(1.76 KB)

Editing: brin_page.h

/*
 * brin_page.h
 *		Prototypes and definitions for BRIN page layouts
 *
 * Portions Copyright (c) 1996-2016, PostgreSQL Global Development Group
 * Portions Copyright (c) 1994, Regents of the University of California
 *
 * IDENTIFICATION
 *		src/include/access/brin_page.h
 *
 * NOTES
 *
 * These structs should really be private to specific BRIN files, but it's
 * useful to have them here so that they can be used by pageinspect and similar
 * tools.
 */
#ifndef BRIN_PAGE_H
#define BRIN_PAGE_H

#include "storage/block.h"
#include "storage/itemptr.h"

/*
 * Special area of BRIN pages.
 *
 * We define it in this odd way so that it always occupies the last
 * MAXALIGN-sized element of each page.
 */
typedef struct BrinSpecialSpace
{
	uint16		vector[MAXALIGN(1) / sizeof(uint16)];
} BrinSpecialSpace;

/*
 * Make the page type be the last half-word in the page, for consumption by
 * pg_filedump and similar utilities.  We don't really care much about the
 * position of the "flags" half-word, but it's simpler to apply a consistent
 * rule to both.
 *
 * See comments above GinPageOpaqueData.
 */
#define BrinPageType(page)		\
	(((BrinSpecialSpace *)		\
	  PageGetSpecialPointer(page))->vector[MAXALIGN(1) / sizeof(uint16) - 1])

#define BrinPageFlags(page)		\
	(((BrinSpecialSpace *)		\
	  PageGetSpecialPointer(page))->vector[MAXALIGN(1) / sizeof(uint16) - 2])

/* special space on all BRIN pages stores a "type" identifier */
#define		BRIN_PAGETYPE_META			0xF091
#define		BRIN_PAGETYPE_REVMAP		0xF092
#define		BRIN_PAGETYPE_REGULAR		0xF093

#define BRIN_IS_META_PAGE(page) (BrinPageType(page) == BRIN_PAGETYPE_META)
#define BRIN_IS_REVMAP_PAGE(page) (BrinPageType(page) == BRIN_PAGETYPE_REVMAP)
#define BRIN_IS_REGULAR_PAGE(page) (BrinPageType(page) == BRIN_PAGETYPE_REGULAR)

/* flags for BrinSpecialSpace */
#define		BRIN_EVACUATE_PAGE			(1 << 0)

/* Metapage definitions */
typedef struct BrinMetaPageData
{
	uint32		brinMagic;
	uint32		brinVersion;
	BlockNumber pagesPerRange;
	BlockNumber lastRevmapPage;
} BrinMetaPageData;

#define BRIN_CURRENT_VERSION		1
#define BRIN_META_MAGIC			0xA8109CFA

#define BRIN_METAPAGE_BLKNO		0

/* Definitions for revmap pages */
typedef struct RevmapContents
{
	/*
	 * This array will fill all available space on the page.  It should be
	 * declared [FLEXIBLE_ARRAY_MEMBER], but for some reason you can't do that
	 * in an otherwise-empty struct.
	 */
	ItemPointerData rm_tids[1];
} RevmapContents;

#define REVMAP_CONTENT_SIZE \
	(BLCKSZ - MAXALIGN(SizeOfPageHeaderData) - \
	 offsetof(RevmapContents, rm_tids) - \
	 MAXALIGN(sizeof(BrinSpecialSpace)))
/* max num of items in the array */
#define REVMAP_PAGE_MAXITEMS \
	(REVMAP_CONTENT_SIZE / sizeof(ItemPointerData))

#endif   /* BRIN_PAGE_H */

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Editing: brin_page.h

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