brin_page.h File Reference

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

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Go to the source code of this file.

Data Structures
struct	BrinSpecialSpace
struct	BrinMetaPageData
struct	RevmapContents

Macros
#define	BrinPageType(page)
#define	BrinPageFlags(page)
#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)
#define	BRIN_EVACUATE_PAGE   (1 << 0)
#define	BRIN_CURRENT_VERSION   1
#define	BRIN_META_MAGIC   0xA8109CFA
#define	BRIN_METAPAGE_BLKNO   0
#define	REVMAP_CONTENT_SIZE
#define	REVMAP_PAGE_MAXITEMS    (REVMAP_CONTENT_SIZE / sizeof(ItemPointerData))

Typedefs
typedef struct BrinSpecialSpace	BrinSpecialSpace
typedef struct BrinMetaPageData	BrinMetaPageData
typedef struct RevmapContents	RevmapContents

Macro Definition Documentation

BRIN_CURRENT_VERSION

#define BRIN_CURRENT_VERSION   1

Definition at line 72 of file brin_page.h.

BRIN_EVACUATE_PAGE

#define BRIN_EVACUATE_PAGE   (1 << 0)

Definition at line 60 of file brin_page.h.

BRIN_IS_META_PAGE

#define BRIN_IS_META_PAGE

(

page

)

(BrinPageType(page) == BRIN_PAGETYPE_META)

Definition at line 55 of file brin_page.h.

BRIN_IS_REGULAR_PAGE

#define BRIN_IS_REGULAR_PAGE

(

page

)

(BrinPageType(page) == BRIN_PAGETYPE_REGULAR)

Definition at line 57 of file brin_page.h.

BRIN_IS_REVMAP_PAGE

#define BRIN_IS_REVMAP_PAGE

(

page

)

(BrinPageType(page) == BRIN_PAGETYPE_REVMAP)

Definition at line 56 of file brin_page.h.

BRIN_META_MAGIC

#define BRIN_META_MAGIC   0xA8109CFA

Definition at line 73 of file brin_page.h.

BRIN_METAPAGE_BLKNO

#define BRIN_METAPAGE_BLKNO   0

Definition at line 75 of file brin_page.h.

BRIN_PAGETYPE_META

#define BRIN_PAGETYPE_META   0xF091

Definition at line 51 of file brin_page.h.

BRIN_PAGETYPE_REGULAR

#define BRIN_PAGETYPE_REGULAR   0xF093

Definition at line 53 of file brin_page.h.

BRIN_PAGETYPE_REVMAP

#define BRIN_PAGETYPE_REVMAP   0xF092

Definition at line 52 of file brin_page.h.

BrinPageFlags

#define BrinPageFlags

(

page

)

Value:

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

Definition at line 46 of file brin_page.h.

{
    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 */

BrinPageType

#define BrinPageType

(

page

)

Value:

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

Definition at line 42 of file brin_page.h.

REVMAP_CONTENT_SIZE

#define REVMAP_CONTENT_SIZE

Value:

    (BLCKSZ - MAXALIGN(SizeOfPageHeaderData) - \
	 offsetof(RevmapContents, rm_tids) - \
	 MAXALIGN(sizeof(BrinSpecialSpace)))

Definition at line 88 of file brin_page.h.

REVMAP_PAGE_MAXITEMS

#define REVMAP_PAGE_MAXITEMS    (REVMAP_CONTENT_SIZE / sizeof(ItemPointerData))

Definition at line 93 of file brin_page.h.

Typedef Documentation

BrinMetaPageData

typedef struct BrinMetaPageData BrinMetaPageData

BrinSpecialSpace

typedef struct BrinSpecialSpace BrinSpecialSpace

RevmapContents

typedef struct RevmapContents RevmapContents