#include "access/gist.h"
#include "access/xlogreader.h"
#include "lib/stringinfo.h"

Include dependency graph for gistxlog.h:

This graph shows which files directly or indirectly include this file:

Data Structures
struct	gistxlogPageUpdate

struct	gistxlogDelete

struct	gistxlogPageSplit

struct	gistxlogPageDelete

struct	gistxlogPageReuse

Macros
#define	XLOG_GIST_PAGE_UPDATE 0x00

#define	XLOG_GIST_DELETE

#define	XLOG_GIST_PAGE_REUSE

#define	XLOG_GIST_PAGE_SPLIT 0x30

#define	XLOG_GIST_PAGE_DELETE 0x60

#define	XLOG_GIST_ASSIGN_LSN 0x70 /* nop, assign new LSN */

#define	SizeOfGistxlogDelete (offsetof(gistxlogDelete, ntodelete) + sizeof(uint16))

#define	SizeOfGistxlogPageDelete (offsetof(gistxlogPageDelete, downlinkOffset) + sizeof(OffsetNumber))

#define	SizeOfGistxlogPageReuse (offsetof(gistxlogPageReuse, latestRemovedFullXid) + sizeof(FullTransactionId))

Typedefs
typedef struct gistxlogPageUpdate	gistxlogPageUpdate

typedef struct gistxlogDelete	gistxlogDelete

typedef struct gistxlogPageSplit	gistxlogPageSplit

typedef struct gistxlogPageDelete	gistxlogPageDelete

typedef struct gistxlogPageReuse	gistxlogPageReuse

Functions
void	gist_redo (XLogReaderState *record)

void	gist_desc (StringInfo buf, XLogReaderState *record)

const char *	gist_identify (uint8 info)

void	gist_xlog_startup (void)

void	gist_xlog_cleanup (void)

void	gist_mask (char *pagedata, BlockNumber blkno)

Macro Definition Documentation

◆ SizeOfGistxlogDelete

#define SizeOfGistxlogDelete (offsetof(gistxlogDelete, ntodelete) + sizeof(uint16))

Definition at line 60 of file gistxlog.h.

Referenced by gistRedoDeleteRecord(), and gistXLogDelete().

◆ SizeOfGistxlogPageDelete

#define SizeOfGistxlogPageDelete (offsetof(gistxlogPageDelete, downlinkOffset) + sizeof(OffsetNumber))

Definition at line 92 of file gistxlog.h.

Referenced by gistXLogPageDelete().

◆ SizeOfGistxlogPageReuse

#define SizeOfGistxlogPageReuse (offsetof(gistxlogPageReuse, latestRemovedFullXid) + sizeof(FullTransactionId))

Definition at line 105 of file gistxlog.h.

Referenced by gistXLogPageReuse().

◆ XLOG_GIST_ASSIGN_LSN

#define XLOG_GIST_ASSIGN_LSN 0x70 /* nop, assign new LSN */

Definition at line 29 of file gistxlog.h.

Referenced by gist_desc(), gist_identify(), gist_redo(), and gistXLogAssignLSN().

◆ XLOG_GIST_DELETE

#define XLOG_GIST_DELETE

Value:

0x10 /* delete leaf index tuples for a

* page */

Definition at line 21 of file gistxlog.h.

Referenced by gist_desc(), gist_identify(), gist_redo(), and gistXLogDelete().

◆ XLOG_GIST_PAGE_DELETE

#define XLOG_GIST_PAGE_DELETE 0x60

Definition at line 28 of file gistxlog.h.

Referenced by gist_desc(), gist_identify(), gist_redo(), and gistXLogPageDelete().

◆ XLOG_GIST_PAGE_REUSE

#define XLOG_GIST_PAGE_REUSE

Value:

0x20 /* old page is about to be reused

* from FSM */

Definition at line 23 of file gistxlog.h.

Referenced by gist_desc(), gist_identify(), gist_redo(), and gistXLogPageReuse().

◆ XLOG_GIST_PAGE_SPLIT

#define XLOG_GIST_PAGE_SPLIT 0x30

Definition at line 25 of file gistxlog.h.

Referenced by gist_desc(), gist_identify(), gist_redo(), and gistXLogSplit().

◆ XLOG_GIST_PAGE_UPDATE

#define XLOG_GIST_PAGE_UPDATE 0x00

Definition at line 20 of file gistxlog.h.

Referenced by gist_desc(), gist_identify(), gist_redo(), and gistXLogUpdate().

Typedef Documentation

◆ gistxlogDelete

typedef struct gistxlogDelete gistxlogDelete

◆ gistxlogPageDelete

typedef struct gistxlogPageDelete gistxlogPageDelete

◆ gistxlogPageReuse

typedef struct gistxlogPageReuse gistxlogPageReuse

◆ gistxlogPageSplit

typedef struct gistxlogPageSplit gistxlogPageSplit

◆ gistxlogPageUpdate

typedef struct gistxlogPageUpdate gistxlogPageUpdate

Function Documentation

◆ gist_desc()

void gist_desc	(	StringInfo	buf,
		XLogReaderState *	record
	)

Definition at line 61 of file gistdesc.c.

References out_gistxlogDelete(), out_gistxlogPageDelete(), out_gistxlogPageReuse(), out_gistxlogPageSplit(), out_gistxlogPageUpdate(), XLOG_GIST_ASSIGN_LSN, XLOG_GIST_DELETE, XLOG_GIST_PAGE_DELETE, XLOG_GIST_PAGE_REUSE, XLOG_GIST_PAGE_SPLIT, XLOG_GIST_PAGE_UPDATE, XLogRecGetData, XLogRecGetInfo, and XLR_INFO_MASK.

 {
     char       *rec = XLogRecGetData(record);
     uint8       info = XLogRecGetInfo(record) & ~XLR_INFO_MASK;
 
     switch (info)
     {
         case XLOG_GIST_PAGE_UPDATE:
             out_gistxlogPageUpdate(buf, (gistxlogPageUpdate *) rec);
             break;
         case XLOG_GIST_PAGE_REUSE:
             out_gistxlogPageReuse(buf, (gistxlogPageReuse *) rec);
             break;
         case XLOG_GIST_DELETE:
             out_gistxlogDelete(buf, (gistxlogDelete *) rec);
             break;
         case XLOG_GIST_PAGE_SPLIT:
             out_gistxlogPageSplit(buf, (gistxlogPageSplit *) rec);
             break;
         case XLOG_GIST_PAGE_DELETE:
             out_gistxlogPageDelete(buf, (gistxlogPageDelete *) rec);
             break;
         case XLOG_GIST_ASSIGN_LSN:
             /* No details to write out */
             break;
     }
 }

◆ gist_identify()

const char* gist_identify ( uint8 info )

Definition at line 90 of file gistdesc.c.

References XLOG_GIST_ASSIGN_LSN, XLOG_GIST_DELETE, XLOG_GIST_PAGE_DELETE, XLOG_GIST_PAGE_REUSE, XLOG_GIST_PAGE_SPLIT, XLOG_GIST_PAGE_UPDATE, and XLR_INFO_MASK.

 {
     const char *id = NULL;
 
     switch (info & ~XLR_INFO_MASK)
     {
         case XLOG_GIST_PAGE_UPDATE:
             id = "PAGE_UPDATE";
             break;
         case XLOG_GIST_DELETE:
             id = "DELETE";
             break;
         case XLOG_GIST_PAGE_REUSE:
             id = "PAGE_REUSE";
             break;
         case XLOG_GIST_PAGE_SPLIT:
             id = "PAGE_SPLIT";
             break;
         case XLOG_GIST_PAGE_DELETE:
             id = "PAGE_DELETE";
             break;
         case XLOG_GIST_ASSIGN_LSN:
             id = "ASSIGN_LSN";
             break;
     }
 
     return id;
 }

◆ gist_mask()

void gist_mask	(	char *	pagedata,
		BlockNumber	blkno
	)

Definition at line 479 of file gistxlog.c.

References GistClearPageHasGarbage, GistMarkFollowRight, GistPageIsLeaf, GistPageSetNSN, mask_lp_flags(), MASK_MARKER, mask_page_hint_bits(), mask_page_lsn_and_checksum(), and mask_unused_space().

 {
     Page        page = (Page) pagedata;
 
     mask_page_lsn_and_checksum(page);
 
     mask_page_hint_bits(page);
     mask_unused_space(page);
 
     /*
      * NSN is nothing but a special purpose LSN. Hence, mask it for the same
      * reason as mask_page_lsn_and_checksum.
      */
     GistPageSetNSN(page, (uint64) MASK_MARKER);
 
     /*
      * We update F_FOLLOW_RIGHT flag on the left child after writing WAL
      * record. Hence, mask this flag. See gistplacetopage() for details.
      */
     GistMarkFollowRight(page);
 
     if (GistPageIsLeaf(page))
     {
         /*
          * In gist leaf pages, it is possible to modify the LP_FLAGS without
          * emitting any WAL record. Hence, mask the line pointer flags. See
          * gistkillitems() for details.
          */
         mask_lp_flags(page);
     }
 
     /*
      * During gist redo, we never mark a page as garbage. Hence, mask it to
      * ignore any differences.
      */
     GistClearPageHasGarbage(page);
 }

◆ gist_redo()

void gist_redo ( XLogReaderState * record )

Definition at line 423 of file gistxlog.c.

References elog, gistRedoDeleteRecord(), gistRedoPageDelete(), gistRedoPageReuse(), gistRedoPageSplitRecord(), gistRedoPageUpdateRecord(), MemoryContextReset(), MemoryContextSwitchTo(), PANIC, XLOG_GIST_ASSIGN_LSN, XLOG_GIST_DELETE, XLOG_GIST_PAGE_DELETE, XLOG_GIST_PAGE_REUSE, XLOG_GIST_PAGE_SPLIT, XLOG_GIST_PAGE_UPDATE, XLogRecGetInfo, and XLR_INFO_MASK.

 {
     uint8       info = XLogRecGetInfo(record) & ~XLR_INFO_MASK;
     MemoryContext oldCxt;
 
     /*
      * GiST indexes do not require any conflict processing. NB: If we ever
      * implement a similar optimization we have in b-tree, and remove killed
      * tuples outside VACUUM, we'll need to handle that here.
      */
 
     oldCxt = MemoryContextSwitchTo(opCtx);
     switch (info)
     {
         case XLOG_GIST_PAGE_UPDATE:
             gistRedoPageUpdateRecord(record);
             break;
         case XLOG_GIST_DELETE:
             gistRedoDeleteRecord(record);
             break;
         case XLOG_GIST_PAGE_REUSE:
             gistRedoPageReuse(record);
             break;
         case XLOG_GIST_PAGE_SPLIT:
             gistRedoPageSplitRecord(record);
             break;
         case XLOG_GIST_PAGE_DELETE:
             gistRedoPageDelete(record);
             break;
         case XLOG_GIST_ASSIGN_LSN:
             /* nop. See gistGetFakeLSN(). */
             break;
         default:
             elog(PANIC, "gist_redo: unknown op code %u", info);
     }
 
     MemoryContextSwitchTo(oldCxt);
     MemoryContextReset(opCtx);
 }

◆ gist_xlog_cleanup()

void gist_xlog_cleanup ( void )

Definition at line 470 of file gistxlog.c.

References MemoryContextDelete().

 {
     MemoryContextDelete(opCtx);
 }

◆ gist_xlog_startup()

void gist_xlog_startup ( void )

Definition at line 464 of file gistxlog.c.

References createTempGistContext().

 {
     opCtx = createTempGistContext();
 }

Data Structures

Macros

Typedefs

Functions