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Split index xlog headers from other private index headers.

Browse Source 
The xlog-specific headers need to be included in both frontend code -
specifically, pg_waldump - and the backend, but the remainder of the
private headers for each index are only needed by the backend.  By
splitting the xlog stuff out into separate headers, pg_waldump pulls
in fewer backend headers, which is a good thing.

Patch by me, reviewed by Michael Paquier and Andres Freund, per a
complaint from Dilip Kumar.

Discussion: http://postgr.es/m/CA+TgmoZ=F=GkxV0YEv-A8tb+AEGy_Qa7GSiJ8deBKFATnzfEug@mail.gmail.com
This commit is contained in:
Robert Haas
2017-02-14 15:37:59 -05:00
parent fb47544d0c
commit 8da9a22636
35 changed files with 1159 additions and 1055 deletions
Download Patch File Download Diff File Expand all files Collapse all files

1
src/backend/access/gin/ginbtree.c
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@ -15,6 +15,7 @@
#include "postgres.h" #include "postgres.h"
#include "access/gin_private.h" #include "access/gin_private.h"
#include "access/ginxlog.h"
#include "access/xloginsert.h" #include "access/xloginsert.h"
#include "miscadmin.h" #include "miscadmin.h"
#include "utils/memutils.h" #include "utils/memutils.h"

1
src/backend/access/gin/gindatapage.c
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@ -15,6 +15,7 @@
#include "postgres.h" #include "postgres.h"
#include "access/gin_private.h" #include "access/gin_private.h"
#include "access/ginxlog.h"
#include "access/xloginsert.h" #include "access/xloginsert.h"
#include "lib/ilist.h" #include "lib/ilist.h"
#include "miscadmin.h" #include "miscadmin.h"

1
src/backend/access/gin/ginentrypage.c
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@ -15,6 +15,7 @@
#include "postgres.h" #include "postgres.h"
#include "access/gin_private.h" #include "access/gin_private.h"
#include "access/ginxlog.h"
#include "access/xloginsert.h" #include "access/xloginsert.h"
#include "miscadmin.h" #include "miscadmin.h"
#include "utils/rel.h" #include "utils/rel.h"

1
src/backend/access/gin/ginfast.c
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@ -19,6 +19,7 @@
#include "postgres.h" #include "postgres.h"
#include "access/gin_private.h" #include "access/gin_private.h"
#include "access/ginxlog.h"
#include "access/xloginsert.h" #include "access/xloginsert.h"
#include "access/xlog.h" #include "access/xlog.h"
#include "commands/vacuum.h" #include "commands/vacuum.h"

1
src/backend/access/gin/gininsert.c
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@ -15,6 +15,7 @@
#include "postgres.h" #include "postgres.h"
#include "access/gin_private.h" #include "access/gin_private.h"
#include "access/ginxlog.h"
#include "access/xloginsert.h" #include "access/xloginsert.h"
#include "catalog/index.h" #include "catalog/index.h"
#include "miscadmin.h" #include "miscadmin.h"

1
src/backend/access/gin/ginutil.c
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@ -15,6 +15,7 @@
#include "postgres.h" #include "postgres.h"
#include "access/gin_private.h" #include "access/gin_private.h"
#include "access/ginxlog.h"
#include "access/reloptions.h" #include "access/reloptions.h"
#include "access/xloginsert.h" #include "access/xloginsert.h"
#include "catalog/pg_collation.h" #include "catalog/pg_collation.h"

1
src/backend/access/gin/ginvacuum.c
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@ -15,6 +15,7 @@
#include "postgres.h" #include "postgres.h"
#include "access/gin_private.h" #include "access/gin_private.h"
#include "access/ginxlog.h"
#include "access/xloginsert.h" #include "access/xloginsert.h"
#include "commands/vacuum.h" #include "commands/vacuum.h"
#include "miscadmin.h" #include "miscadmin.h"

1
src/backend/access/gin/ginxlog.c
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@ -15,6 +15,7 @@
#include "access/bufmask.h" #include "access/bufmask.h"
#include "access/gin_private.h" #include "access/gin_private.h"
#include "access/ginxlog.h"
#include "access/xlogutils.h" #include "access/xlogutils.h"
#include "utils/memutils.h" #include "utils/memutils.h"

1
src/backend/access/gist/gistbuild.c
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@ -18,6 +18,7 @@
#include "access/genam.h" #include "access/genam.h"
#include "access/gist_private.h" #include "access/gist_private.h"
#include "access/gistxlog.h"
#include "access/xloginsert.h" #include "access/xloginsert.h"
#include "catalog/index.h" #include "catalog/index.h"
#include "miscadmin.h" #include "miscadmin.h"

1
src/backend/access/gist/gistxlog.c
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@ -15,6 +15,7 @@
#include "access/bufmask.h" #include "access/bufmask.h"
#include "access/gist_private.h" #include "access/gist_private.h"
#include "access/gistxlog.h"
#include "access/xloginsert.h" #include "access/xloginsert.h"
#include "access/xlogutils.h" #include "access/xlogutils.h"
#include "utils/memutils.h" #include "utils/memutils.h"

1
src/backend/access/nbtree/nbtinsert.c
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@ -17,6 +17,7 @@
#include "access/heapam.h" #include "access/heapam.h"
#include "access/nbtree.h" #include "access/nbtree.h"
#include "access/nbtxlog.h"
#include "access/transam.h" #include "access/transam.h"
#include "access/xloginsert.h" #include "access/xloginsert.h"
#include "miscadmin.h" #include "miscadmin.h"

1
src/backend/access/nbtree/nbtpage.c
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@ -23,6 +23,7 @@
#include "postgres.h" #include "postgres.h"
#include "access/nbtree.h" #include "access/nbtree.h"
#include "access/nbtxlog.h"
#include "access/transam.h" #include "access/transam.h"
#include "access/xlog.h" #include "access/xlog.h"
#include "access/xloginsert.h" #include "access/xloginsert.h"

1
src/backend/access/nbtree/nbtxlog.c
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@ -17,6 +17,7 @@
#include "access/bufmask.h" #include "access/bufmask.h"
#include "access/heapam_xlog.h" #include "access/heapam_xlog.h"
#include "access/nbtree.h" #include "access/nbtree.h"
#include "access/nbtxlog.h"
#include "access/transam.h" #include "access/transam.h"
#include "access/xlog.h" #include "access/xlog.h"
#include "access/xlogutils.h" #include "access/xlogutils.h"

2
src/backend/access/rmgrdesc/gindesc.c
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@ -14,7 +14,7 @@
*/ */
#include "postgres.h" #include "postgres.h"
#include "access/gin_private.h" #include "access/ginxlog.h"
#include "access/xlogutils.h" #include "access/xlogutils.h"
#include "lib/stringinfo.h" #include "lib/stringinfo.h"
#include "storage/relfilenode.h" #include "storage/relfilenode.h"

2
src/backend/access/rmgrdesc/gistdesc.c
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@ -14,7 +14,7 @@
*/ */
#include "postgres.h" #include "postgres.h"
#include "access/gist_private.h" #include "access/gistxlog.h"
#include "lib/stringinfo.h" #include "lib/stringinfo.h"
#include "storage/relfilenode.h" #include "storage/relfilenode.h"

2
src/backend/access/rmgrdesc/nbtdesc.c
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@ -14,7 +14,7 @@
*/ */
#include "postgres.h" #include "postgres.h"
#include "access/nbtree.h" #include "access/nbtxlog.h"
void void
btree_desc(StringInfo buf, XLogReaderState *record) btree_desc(StringInfo buf, XLogReaderState *record)

2
src/backend/access/rmgrdesc/spgdesc.c
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@ -14,7 +14,7 @@
*/ */
#include "postgres.h" #include "postgres.h"
#include "access/spgist_private.h" #include "access/spgxlog.h"
void void
spg_desc(StringInfo buf, XLogReaderState *record) spg_desc(StringInfo buf, XLogReaderState *record)

1
src/backend/access/spgist/spgdoinsert.c
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@ -17,6 +17,7 @@
#include "access/genam.h" #include "access/genam.h"
#include "access/spgist_private.h" #include "access/spgist_private.h"
#include "access/spgxlog.h"
#include "access/xloginsert.h" #include "access/xloginsert.h"
#include "miscadmin.h" #include "miscadmin.h"
#include "storage/bufmgr.h" #include "storage/bufmgr.h"

1
src/backend/access/spgist/spginsert.c
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@ -18,6 +18,7 @@
#include "access/genam.h" #include "access/genam.h"
#include "access/spgist_private.h" #include "access/spgist_private.h"
#include "access/spgxlog.h"
#include "access/xlog.h" #include "access/xlog.h"
#include "access/xloginsert.h" #include "access/xloginsert.h"
#include "catalog/index.h" #include "catalog/index.h"

1
src/backend/access/spgist/spgvacuum.c
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@ -17,6 +17,7 @@
#include "access/genam.h" #include "access/genam.h"
#include "access/spgist_private.h" #include "access/spgist_private.h"
#include "access/spgxlog.h"
#include "access/transam.h" #include "access/transam.h"
#include "access/xloginsert.h" #include "access/xloginsert.h"
#include "catalog/storage_xlog.h" #include "catalog/storage_xlog.h"

1
src/backend/access/spgist/spgxlog.c
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@ -16,6 +16,7 @@
#include "access/bufmask.h" #include "access/bufmask.h"
#include "access/spgist_private.h" #include "access/spgist_private.h"
#include "access/spgxlog.h"
#include "access/transam.h" #include "access/transam.h"
#include "access/xlog.h" #include "access/xlog.h"
#include "access/xlogutils.h" #include "access/xlogutils.h"

8
src/backend/access/transam/rmgr.c
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@ -9,15 +9,15 @@
#include "access/clog.h" #include "access/clog.h"
#include "access/commit_ts.h" #include "access/commit_ts.h"
#include "access/gin.h" #include "access/ginxlog.h"
#include "access/gist_private.h" #include "access/gistxlog.h"
#include "access/generic_xlog.h" #include "access/generic_xlog.h"
#include "access/hash_xlog.h" #include "access/hash_xlog.h"
#include "access/heapam_xlog.h" #include "access/heapam_xlog.h"
#include "access/brin_xlog.h" #include "access/brin_xlog.h"
#include "access/multixact.h" #include "access/multixact.h"
#include "access/nbtree.h" #include "access/nbtxlog.h"
#include "access/spgist.h" #include "access/spgxlog.h"
#include "access/xact.h" #include "access/xact.h"
#include "access/xlog_internal.h" #include "access/xlog_internal.h"
#include "catalog/storage_xlog.h" #include "catalog/storage_xlog.h"

8
src/bin/pg_waldump/rmgrdesc.c
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@ -12,14 +12,14 @@
#include "access/clog.h" #include "access/clog.h"
#include "access/commit_ts.h" #include "access/commit_ts.h"
#include "access/generic_xlog.h" #include "access/generic_xlog.h"
#include "access/gin.h" #include "access/ginxlog.h"
#include "access/gist_private.h" #include "access/gistxlog.h"
#include "access/hash_xlog.h" #include "access/hash_xlog.h"
#include "access/heapam_xlog.h" #include "access/heapam_xlog.h"
#include "access/multixact.h" #include "access/multixact.h"
#include "access/nbtree.h" #include "access/nbtxlog.h"
#include "access/rmgr.h" #include "access/rmgr.h"
#include "access/spgist.h" #include "access/spgxlog.h"
#include "access/xact.h" #include "access/xact.h"
#include "access/xlog_internal.h" #include "access/xlog_internal.h"
#include "catalog/storage_xlog.h" #include "catalog/storage_xlog.h"

8
src/include/access/gin.h
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@ -73,12 +73,4 @@ extern int gin_pending_list_limit;
extern void ginGetStats(Relation index, GinStatsData *stats); extern void ginGetStats(Relation index, GinStatsData *stats);
extern void ginUpdateStats(Relation index, const GinStatsData *stats); extern void ginUpdateStats(Relation index, const GinStatsData *stats);
/* ginxlog.c */
extern void gin_redo(XLogReaderState *record);
extern void gin_desc(StringInfo buf, XLogReaderState *record);
extern const char *gin_identify(uint8 info);
extern void gin_xlog_startup(void);
extern void gin_xlog_cleanup(void);
extern void gin_mask(char *pagedata, BlockNumber blkno);
#endif /* GIN_H */ #endif /* GIN_H */

509
src/include/access/gin_private.h
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@ -12,309 +12,12 @@
#include "access/amapi.h" #include "access/amapi.h"
#include "access/gin.h" #include "access/gin.h"
#include "access/ginblock.h"
#include "access/itup.h" #include "access/itup.h"
#include "fmgr.h" #include "fmgr.h"
#include "storage/bufmgr.h" #include "storage/bufmgr.h"
#include "lib/rbtree.h" #include "lib/rbtree.h"
/*
* Page opaque data in an inverted index page.
*
* Note: GIN does not include a page ID word as do the other index types.
* This is OK because the opaque data is only 8 bytes and so can be reliably
* distinguished by size. Revisit this if the size ever increases.
* Further note: as of 9.2, SP-GiST also uses 8-byte special space, as does
* BRIN as of 9.5. This is still OK, as long as GIN isn't using all of the
* high-order bits in its flags word, because that way the flags word cannot
* match the page IDs used by SP-GiST and BRIN.
*/
typedef struct GinPageOpaqueData
{
BlockNumber rightlink; /* next page if any */
OffsetNumber maxoff; /* number of PostingItems on GIN_DATA &
* ~GIN_LEAF page. On GIN_LIST page, number of
* heap tuples. */
uint16 flags; /* see bit definitions below */
} GinPageOpaqueData;
typedef GinPageOpaqueData *GinPageOpaque;
#define GIN_DATA (1 << 0)
#define GIN_LEAF (1 << 1)
#define GIN_DELETED (1 << 2)
#define GIN_META (1 << 3)
#define GIN_LIST (1 << 4)
#define GIN_LIST_FULLROW (1 << 5) /* makes sense only on GIN_LIST page */
#define GIN_INCOMPLETE_SPLIT (1 << 6) /* page was split, but parent not
* updated */
#define GIN_COMPRESSED (1 << 7)
/* Page numbers of fixed-location pages */
#define GIN_METAPAGE_BLKNO (0)
#define GIN_ROOT_BLKNO (1)
typedef struct GinMetaPageData
{
/*
* Pointers to head and tail of pending list, which consists of GIN_LIST
* pages. These store fast-inserted entries that haven't yet been moved
* into the regular GIN structure.
*/
BlockNumber head;
BlockNumber tail;
/*
* Free space in bytes in the pending list's tail page.
*/
uint32 tailFreeSize;
/*
* We store both number of pages and number of heap tuples that are in the
* pending list.
*/
BlockNumber nPendingPages;
int64 nPendingHeapTuples;
/*
* Statistics for planner use (accurate as of last VACUUM)
*/
BlockNumber nTotalPages;
BlockNumber nEntryPages;
BlockNumber nDataPages;
int64 nEntries;
/*
* GIN version number (ideally this should have been at the front, but too
* late now. Don't move it!)
*
* Currently 2 (for indexes initialized in 9.4 or later)
*
* Version 1 (indexes initialized in version 9.1, 9.2 or 9.3), is
* compatible, but may contain uncompressed posting tree (leaf) pages and
* posting lists. They will be converted to compressed format when
* modified.
*
* Version 0 (indexes initialized in 9.0 or before) is compatible but may
* be missing null entries, including both null keys and placeholders.
* Reject full-index-scan attempts on such indexes.
*/
int32 ginVersion;
} GinMetaPageData;
#define GIN_CURRENT_VERSION 2
#define GinPageGetMeta(p) \
((GinMetaPageData *) PageGetContents(p))
/*
* Macros for accessing a GIN index page's opaque data
*/
#define GinPageGetOpaque(page) ( (GinPageOpaque) PageGetSpecialPointer(page) )
#define GinPageIsLeaf(page) ( (GinPageGetOpaque(page)->flags & GIN_LEAF) != 0 )
#define GinPageSetLeaf(page) ( GinPageGetOpaque(page)->flags |= GIN_LEAF )
#define GinPageSetNonLeaf(page) ( GinPageGetOpaque(page)->flags &= ~GIN_LEAF )
#define GinPageIsData(page) ( (GinPageGetOpaque(page)->flags & GIN_DATA) != 0 )
#define GinPageSetData(page) ( GinPageGetOpaque(page)->flags |= GIN_DATA )
#define GinPageIsList(page) ( (GinPageGetOpaque(page)->flags & GIN_LIST) != 0 )
#define GinPageSetList(page) ( GinPageGetOpaque(page)->flags |= GIN_LIST )
#define GinPageHasFullRow(page) ( (GinPageGetOpaque(page)->flags & GIN_LIST_FULLROW) != 0 )
#define GinPageSetFullRow(page) ( GinPageGetOpaque(page)->flags |= GIN_LIST_FULLROW )
#define GinPageIsCompressed(page) ( (GinPageGetOpaque(page)->flags & GIN_COMPRESSED) != 0 )
#define GinPageSetCompressed(page) ( GinPageGetOpaque(page)->flags |= GIN_COMPRESSED )
#define GinPageIsDeleted(page) ( (GinPageGetOpaque(page)->flags & GIN_DELETED) != 0 )
#define GinPageSetDeleted(page) ( GinPageGetOpaque(page)->flags |= GIN_DELETED)
#define GinPageSetNonDeleted(page) ( GinPageGetOpaque(page)->flags &= ~GIN_DELETED)
#define GinPageIsIncompleteSplit(page) ( (GinPageGetOpaque(page)->flags & GIN_INCOMPLETE_SPLIT) != 0 )
#define GinPageRightMost(page) ( GinPageGetOpaque(page)->rightlink == InvalidBlockNumber)
/*
* We use our own ItemPointerGet(BlockNumber|OffsetNumber)
* to avoid Asserts, since sometimes the ip_posid isn't "valid"
*/
#define GinItemPointerGetBlockNumber(pointer) \
BlockIdGetBlockNumber(&(pointer)->ip_blkid)
#define GinItemPointerGetOffsetNumber(pointer) \
((pointer)->ip_posid)
/*
* Special-case item pointer values needed by the GIN search logic.
* MIN: sorts less than any valid item pointer
* MAX: sorts greater than any valid item pointer
* LOSSY PAGE: indicates a whole heap page, sorts after normal item
* pointers for that page
* Note that these are all distinguishable from an "invalid" item pointer
* (which is InvalidBlockNumber/0) as well as from all normal item
* pointers (which have item numbers in the range 1..MaxHeapTuplesPerPage).
*/
#define ItemPointerSetMin(p) \
ItemPointerSet((p), (BlockNumber)0, (OffsetNumber)0)
#define ItemPointerIsMin(p) \
(GinItemPointerGetOffsetNumber(p) == (OffsetNumber)0 && \
GinItemPointerGetBlockNumber(p) == (BlockNumber)0)
#define ItemPointerSetMax(p) \
ItemPointerSet((p), InvalidBlockNumber, (OffsetNumber)0xffff)
#define ItemPointerIsMax(p) \
(GinItemPointerGetOffsetNumber(p) == (OffsetNumber)0xffff && \
GinItemPointerGetBlockNumber(p) == InvalidBlockNumber)
#define ItemPointerSetLossyPage(p, b) \
ItemPointerSet((p), (b), (OffsetNumber)0xffff)
#define ItemPointerIsLossyPage(p) \
(GinItemPointerGetOffsetNumber(p) == (OffsetNumber)0xffff && \
GinItemPointerGetBlockNumber(p) != InvalidBlockNumber)
/*
* Posting item in a non-leaf posting-tree page
*/
typedef struct
{
/* We use BlockIdData not BlockNumber to avoid padding space wastage */
BlockIdData child_blkno;
ItemPointerData key;
} PostingItem;
#define PostingItemGetBlockNumber(pointer) \
BlockIdGetBlockNumber(&(pointer)->child_blkno)
#define PostingItemSetBlockNumber(pointer, blockNumber) \
BlockIdSet(&((pointer)->child_blkno), (blockNumber))
/*
* Category codes to distinguish placeholder nulls from ordinary NULL keys.
* Note that the datatype size and the first two code values are chosen to be
* compatible with the usual usage of bool isNull flags.
*
* GIN_CAT_EMPTY_QUERY is never stored in the index; and notice that it is
* chosen to sort before not after regular key values.
*/
typedef signed char GinNullCategory;
#define GIN_CAT_NORM_KEY 0 /* normal, non-null key value */
#define GIN_CAT_NULL_KEY 1 /* null key value */
#define GIN_CAT_EMPTY_ITEM 2 /* placeholder for zero-key item */
#define GIN_CAT_NULL_ITEM 3 /* placeholder for null item */
#define GIN_CAT_EMPTY_QUERY (-1) /* placeholder for full-scan query */
/*
* Access macros for null category byte in entry tuples
*/
#define GinCategoryOffset(itup,ginstate) \
(IndexInfoFindDataOffset((itup)->t_info) + \
((ginstate)->oneCol ? 0 : sizeof(int16)))
#define GinGetNullCategory(itup,ginstate) \
(*((GinNullCategory *) ((char*)(itup) + GinCategoryOffset(itup,ginstate))))
#define GinSetNullCategory(itup,ginstate,c) \
(*((GinNullCategory *) ((char*)(itup) + GinCategoryOffset(itup,ginstate))) = (c))
/*
* Access macros for leaf-page entry tuples (see discussion in README)
*/
#define GinGetNPosting(itup) GinItemPointerGetOffsetNumber(&(itup)->t_tid)
#define GinSetNPosting(itup,n) ItemPointerSetOffsetNumber(&(itup)->t_tid,n)
#define GIN_TREE_POSTING ((OffsetNumber)0xffff)
#define GinIsPostingTree(itup) (GinGetNPosting(itup) == GIN_TREE_POSTING)
#define GinSetPostingTree(itup, blkno) ( GinSetNPosting((itup),GIN_TREE_POSTING), ItemPointerSetBlockNumber(&(itup)->t_tid, blkno) )
#define GinGetPostingTree(itup) GinItemPointerGetBlockNumber(&(itup)->t_tid)
#define GIN_ITUP_COMPRESSED (1U << 31)
#define GinGetPostingOffset(itup) (GinItemPointerGetBlockNumber(&(itup)->t_tid) & (~GIN_ITUP_COMPRESSED))
#define GinSetPostingOffset(itup,n) ItemPointerSetBlockNumber(&(itup)->t_tid,(n)|GIN_ITUP_COMPRESSED)
#define GinGetPosting(itup) ((Pointer) ((char*)(itup) + GinGetPostingOffset(itup)))
#define GinItupIsCompressed(itup) ((GinItemPointerGetBlockNumber(&(itup)->t_tid) & GIN_ITUP_COMPRESSED) != 0)
/*
* Maximum size of an item on entry tree page. Make sure that we fit at least
* three items on each page. (On regular B-tree indexes, we must fit at least
* three items: two data items and the "high key". In GIN entry tree, we don't
* currently store the high key explicitly, we just use the rightmost item on
* the page, so it would actually be enough to fit two items.)
*/
#define GinMaxItemSize \
Min(INDEX_SIZE_MASK, \
MAXALIGN_DOWN(((BLCKSZ - \
MAXALIGN(SizeOfPageHeaderData + 3 * sizeof(ItemIdData)) - \
MAXALIGN(sizeof(GinPageOpaqueData))) / 3)))
/*
* Access macros for non-leaf entry tuples
*/
#define GinGetDownlink(itup) GinItemPointerGetBlockNumber(&(itup)->t_tid)
#define GinSetDownlink(itup,blkno) ItemPointerSet(&(itup)->t_tid, blkno, InvalidOffsetNumber)
/*
* Data (posting tree) pages
*
* Posting tree pages don't store regular tuples. Non-leaf pages contain
* PostingItems, which are pairs of ItemPointers and child block numbers.
* Leaf pages contain GinPostingLists and an uncompressed array of item
* pointers.
*
* In a leaf page, the compressed posting lists are stored after the regular
* page header, one after each other. Although we don't store regular tuples,
* pd_lower is used to indicate the end of the posting lists. After that, free
* space follows. This layout is compatible with the "standard" heap and
* index page layout described in bufpage.h, so that we can e.g set buffer_std
* when writing WAL records.
*
* In the special space is the GinPageOpaque struct.
*/
#define GinDataLeafPageGetPostingList(page) \
(GinPostingList *) ((PageGetContents(page) + MAXALIGN(sizeof(ItemPointerData))))
#define GinDataLeafPageGetPostingListSize(page) \
(((PageHeader) page)->pd_lower - MAXALIGN(SizeOfPageHeaderData) - MAXALIGN(sizeof(ItemPointerData)))
#define GinDataLeafPageIsEmpty(page) \
(GinPageIsCompressed(page) ? (GinDataLeafPageGetPostingListSize(page) == 0) : (GinPageGetOpaque(page)->maxoff < FirstOffsetNumber))
#define GinDataLeafPageGetFreeSpace(page) PageGetExactFreeSpace(page)
#define GinDataPageGetRightBound(page) ((ItemPointer) PageGetContents(page))
/*
* Pointer to the data portion of a posting tree page. For internal pages,
* that's the beginning of the array of PostingItems. For compressed leaf
* pages, the first compressed posting list. For uncompressed (pre-9.4) leaf
* pages, it's the beginning of the ItemPointer array.
*/
#define GinDataPageGetData(page) \
(PageGetContents(page) + MAXALIGN(sizeof(ItemPointerData)))
/* non-leaf pages contain PostingItems */
#define GinDataPageGetPostingItem(page, i) \
((PostingItem *) (GinDataPageGetData(page) + ((i)-1) * sizeof(PostingItem)))
/*
* Note: there is no GinDataPageGetDataSize macro, because before version
* 9.4, we didn't set pd_lower on data pages. There can be pages in the index
* that were binary-upgraded from earlier versions and still have an invalid
* pd_lower, so we cannot trust it in general. Compressed posting tree leaf
* pages are new in 9.4, however, so we can trust them; see
* GinDataLeafPageGetPostingListSize.
*/
#define GinDataPageSetDataSize(page, size) \
{ \
Assert(size <= GinDataPageMaxDataSize); \
((PageHeader) page)->pd_lower = (size) + MAXALIGN(SizeOfPageHeaderData) + MAXALIGN(sizeof(ItemPointerData)); \
}
#define GinNonLeafDataPageGetFreeSpace(page) \
(GinDataPageMaxDataSize - \
GinPageGetOpaque(page)->maxoff * sizeof(PostingItem))
#define GinDataPageMaxDataSize \
(BLCKSZ - MAXALIGN(SizeOfPageHeaderData) \
- MAXALIGN(sizeof(ItemPointerData)) \
- MAXALIGN(sizeof(GinPageOpaqueData)))
/*
* List pages
*/
#define GinListPageSize \
( BLCKSZ - SizeOfPageHeaderData - MAXALIGN(sizeof(GinPageOpaqueData)) )
/* /*
* Storage type for GIN's reloptions * Storage type for GIN's reloptions
*/ */
@ -380,216 +83,6 @@ typedef struct GinState
} GinState; } GinState;
/*
* A compressed posting list.
*
* Note: This requires 2-byte alignment.
*/
typedef struct
{
ItemPointerData first; /* first item in this posting list (unpacked) */
uint16 nbytes; /* number of bytes that follow */
unsigned char bytes[FLEXIBLE_ARRAY_MEMBER]; /* varbyte encoded items */
} GinPostingList;
#define SizeOfGinPostingList(plist) (offsetof(GinPostingList, bytes) + SHORTALIGN((plist)->nbytes) )
#define GinNextPostingListSegment(cur) ((GinPostingList *) (((char *) (cur)) + SizeOfGinPostingList((cur))))
/* XLog stuff */
#define XLOG_GIN_CREATE_INDEX 0x00
#define XLOG_GIN_CREATE_PTREE 0x10
typedef struct ginxlogCreatePostingTree
{
uint32 size;
/* A compressed posting list follows */
} ginxlogCreatePostingTree;
/*
* The format of the insertion record varies depending on the page type.
* ginxlogInsert is the common part between all variants.
*
* Backup Blk 0: target page
* Backup Blk 1: left child, if this insertion finishes an incomplete split
*/
#define XLOG_GIN_INSERT 0x20
typedef struct
{
uint16 flags; /* GIN_INSERT_ISLEAF and/or GIN_INSERT_ISDATA */
/*
* FOLLOWS:
*
* 1. if not leaf page, block numbers of the left and right child pages
* whose split this insertion finishes, as BlockIdData[2] (beware of
* adding fields in this struct that would make them not 16-bit aligned)
*
* 2. a ginxlogInsertEntry or ginxlogRecompressDataLeaf struct, depending
* on tree type.
*
* NB: the below structs are only 16-bit aligned when appended to a
* ginxlogInsert struct! Beware of adding fields to them that require
* stricter alignment.
*/
} ginxlogInsert;
typedef struct
{
OffsetNumber offset;
bool isDelete;
IndexTupleData tuple; /* variable length */
} ginxlogInsertEntry;
typedef struct
{
uint16 nactions;
/* Variable number of 'actions' follow */
} ginxlogRecompressDataLeaf;
/*
* Note: this struct is currently not used in code, and only acts as
* documentation. The WAL record format is as specified here, but the code
* uses straight access through a Pointer and memcpy to read/write these.
*/
typedef struct
{
uint8 segno; /* segment this action applies to */
char type; /* action type (see below) */
/*
* Action-specific data follows. For INSERT and REPLACE actions that is a
* GinPostingList struct. For ADDITEMS, a uint16 for the number of items
* added, followed by the items themselves as ItemPointers. DELETE actions
* have no further data.
*/
} ginxlogSegmentAction;
/* Action types */
#define GIN_SEGMENT_UNMODIFIED 0 /* no action (not used in WAL records) */
#define GIN_SEGMENT_DELETE 1 /* a whole segment is removed */
#define GIN_SEGMENT_INSERT 2 /* a whole segment is added */
#define GIN_SEGMENT_REPLACE 3 /* a segment is replaced */
#define GIN_SEGMENT_ADDITEMS 4 /* items are added to existing segment */
typedef struct
{
OffsetNumber offset;
PostingItem newitem;
} ginxlogInsertDataInternal;
/*
* Backup Blk 0: new left page (= original page, if not root split)
* Backup Blk 1: new right page
* Backup Blk 2: original page / new root page, if root split
* Backup Blk 3: left child, if this insertion completes an earlier split
*/
#define XLOG_GIN_SPLIT 0x30
typedef struct ginxlogSplit
{
RelFileNode node;
BlockNumber rrlink; /* right link, or root's blocknumber if root
* split */
BlockNumber leftChildBlkno; /* valid on a non-leaf split */
BlockNumber rightChildBlkno;
uint16 flags; /* see below */
} ginxlogSplit;
/*
* Flags used in ginxlogInsert and ginxlogSplit records
*/
#define GIN_INSERT_ISDATA 0x01 /* for both insert and split records */
#define GIN_INSERT_ISLEAF 0x02 /* ditto */
#define GIN_SPLIT_ROOT 0x04 /* only for split records */
/*
* Vacuum simply WAL-logs the whole page, when anything is modified. This
* is functionally identical to heap_newpage records, but is kept separate for
* debugging purposes. (When inspecting the WAL stream, it's easier to see
* what's going on when GIN vacuum records are marked as such, not as heap
* records.) This is currently only used for entry tree leaf pages.
*/
#define XLOG_GIN_VACUUM_PAGE 0x40
/*
* Vacuuming posting tree leaf page is WAL-logged like recompression caused
* by insertion.
*/
#define XLOG_GIN_VACUUM_DATA_LEAF_PAGE 0x90
typedef struct ginxlogVacuumDataLeafPage
{
ginxlogRecompressDataLeaf data;
} ginxlogVacuumDataLeafPage;
/*
* Backup Blk 0: deleted page
* Backup Blk 1: parent
* Backup Blk 2: left sibling
*/
#define XLOG_GIN_DELETE_PAGE 0x50
typedef struct ginxlogDeletePage
{
OffsetNumber parentOffset;
BlockNumber rightLink;
} ginxlogDeletePage;
#define XLOG_GIN_UPDATE_META_PAGE 0x60
/*
* Backup Blk 0: metapage
* Backup Blk 1: tail page
*/
typedef struct ginxlogUpdateMeta
{
RelFileNode node;
GinMetaPageData metadata;
BlockNumber prevTail;
BlockNumber newRightlink;
int32 ntuples; /* if ntuples > 0 then metadata.tail was
* updated with that many tuples; else new sub
* list was inserted */
/* array of inserted tuples follows */
} ginxlogUpdateMeta;
#define XLOG_GIN_INSERT_LISTPAGE 0x70
typedef struct ginxlogInsertListPage
{
BlockNumber rightlink;
int32 ntuples;
/* array of inserted tuples follows */
} ginxlogInsertListPage;
/*
* Backup Blk 0: metapage
* Backup Blk 1 to (ndeleted + 1): deleted pages
*/
#define XLOG_GIN_DELETE_LISTPAGE 0x80
/*
* The WAL record for deleting list pages must contain a block reference to
* all the deleted pages, so the number of pages that can be deleted in one
* record is limited by XLR_MAX_BLOCK_ID. (block_id 0 is used for the
* metapage.)
*/
#define GIN_NDELETE_AT_ONCE Min(16, XLR_MAX_BLOCK_ID - 1)
typedef struct ginxlogDeleteListPages
{
GinMetaPageData metadata;
int32 ndeleted;
} ginxlogDeleteListPages;
/* ginutil.c */ /* ginutil.c */
extern bytea *ginoptions(Datum reloptions, bool validate); extern bytea *ginoptions(Datum reloptions, bool validate);
extern void initGinState(GinState *state, Relation index); extern void initGinState(GinState *state, Relation index);

329
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@ -0,0 +1,329 @@
/*--------------------------------------------------------------------------
* ginblock.h
* details of structures stored in GIN index blocks
*
* Copyright (c) 2006-2017, PostgreSQL Global Development Group
*
* src/include/access/ginblock.h
*--------------------------------------------------------------------------
*/
#ifndef GINBLOCK_H
#define GINBLOCK_H
#include "storage/block.h"
#include "storage/itemptr.h"
#include "storage/off.h"
/*
* Page opaque data in an inverted index page.
*
* Note: GIN does not include a page ID word as do the other index types.
* This is OK because the opaque data is only 8 bytes and so can be reliably
* distinguished by size. Revisit this if the size ever increases.
* Further note: as of 9.2, SP-GiST also uses 8-byte special space, as does
* BRIN as of 9.5. This is still OK, as long as GIN isn't using all of the
* high-order bits in its flags word, because that way the flags word cannot
* match the page IDs used by SP-GiST and BRIN.
*/
typedef struct GinPageOpaqueData
{
BlockNumber rightlink; /* next page if any */
OffsetNumber maxoff; /* number of PostingItems on GIN_DATA &
* ~GIN_LEAF page. On GIN_LIST page, number of
* heap tuples. */
uint16 flags; /* see bit definitions below */
} GinPageOpaqueData;
typedef GinPageOpaqueData *GinPageOpaque;
#define GIN_DATA (1 << 0)
#define GIN_LEAF (1 << 1)
#define GIN_DELETED (1 << 2)
#define GIN_META (1 << 3)
#define GIN_LIST (1 << 4)
#define GIN_LIST_FULLROW (1 << 5) /* makes sense only on GIN_LIST page */
#define GIN_INCOMPLETE_SPLIT (1 << 6) /* page was split, but parent not
* updated */
#define GIN_COMPRESSED (1 << 7)
/* Page numbers of fixed-location pages */
#define GIN_METAPAGE_BLKNO (0)
#define GIN_ROOT_BLKNO (1)
typedef struct GinMetaPageData
{
/*
* Pointers to head and tail of pending list, which consists of GIN_LIST
* pages. These store fast-inserted entries that haven't yet been moved
* into the regular GIN structure.
*/
BlockNumber head;
BlockNumber tail;
/*
* Free space in bytes in the pending list's tail page.
*/
uint32 tailFreeSize;
/*
* We store both number of pages and number of heap tuples that are in the
* pending list.
*/
BlockNumber nPendingPages;
int64 nPendingHeapTuples;
/*
* Statistics for planner use (accurate as of last VACUUM)
*/
BlockNumber nTotalPages;
BlockNumber nEntryPages;
BlockNumber nDataPages;
int64 nEntries;
/*
* GIN version number (ideally this should have been at the front, but too
* late now. Don't move it!)
*
* Currently 2 (for indexes initialized in 9.4 or later)
*
* Version 1 (indexes initialized in version 9.1, 9.2 or 9.3), is
* compatible, but may contain uncompressed posting tree (leaf) pages and
* posting lists. They will be converted to compressed format when
* modified.
*
* Version 0 (indexes initialized in 9.0 or before) is compatible but may
* be missing null entries, including both null keys and placeholders.
* Reject full-index-scan attempts on such indexes.
*/
int32 ginVersion;
} GinMetaPageData;
#define GIN_CURRENT_VERSION 2
#define GinPageGetMeta(p) \
((GinMetaPageData *) PageGetContents(p))
/*
* Macros for accessing a GIN index page's opaque data
*/
#define GinPageGetOpaque(page) ( (GinPageOpaque) PageGetSpecialPointer(page) )
#define GinPageIsLeaf(page) ( (GinPageGetOpaque(page)->flags & GIN_LEAF) != 0 )
#define GinPageSetLeaf(page) ( GinPageGetOpaque(page)->flags |= GIN_LEAF )
#define GinPageSetNonLeaf(page) ( GinPageGetOpaque(page)->flags &= ~GIN_LEAF )
#define GinPageIsData(page) ( (GinPageGetOpaque(page)->flags & GIN_DATA) != 0 )
#define GinPageSetData(page) ( GinPageGetOpaque(page)->flags |= GIN_DATA )
#define GinPageIsList(page) ( (GinPageGetOpaque(page)->flags & GIN_LIST) != 0 )
#define GinPageSetList(page) ( GinPageGetOpaque(page)->flags |= GIN_LIST )
#define GinPageHasFullRow(page) ( (GinPageGetOpaque(page)->flags & GIN_LIST_FULLROW) != 0 )
#define GinPageSetFullRow(page) ( GinPageGetOpaque(page)->flags |= GIN_LIST_FULLROW )
#define GinPageIsCompressed(page) ( (GinPageGetOpaque(page)->flags & GIN_COMPRESSED) != 0 )
#define GinPageSetCompressed(page) ( GinPageGetOpaque(page)->flags |= GIN_COMPRESSED )
#define GinPageIsDeleted(page) ( (GinPageGetOpaque(page)->flags & GIN_DELETED) != 0 )
#define GinPageSetDeleted(page) ( GinPageGetOpaque(page)->flags |= GIN_DELETED)
#define GinPageSetNonDeleted(page) ( GinPageGetOpaque(page)->flags &= ~GIN_DELETED)
#define GinPageIsIncompleteSplit(page) ( (GinPageGetOpaque(page)->flags & GIN_INCOMPLETE_SPLIT) != 0 )
#define GinPageRightMost(page) ( GinPageGetOpaque(page)->rightlink == InvalidBlockNumber)
/*
* We use our own ItemPointerGet(BlockNumber|OffsetNumber)
* to avoid Asserts, since sometimes the ip_posid isn't "valid"
*/
#define GinItemPointerGetBlockNumber(pointer) \
BlockIdGetBlockNumber(&(pointer)->ip_blkid)
#define GinItemPointerGetOffsetNumber(pointer) \
((pointer)->ip_posid)
/*
* Special-case item pointer values needed by the GIN search logic.
* MIN: sorts less than any valid item pointer
* MAX: sorts greater than any valid item pointer
* LOSSY PAGE: indicates a whole heap page, sorts after normal item
* pointers for that page
* Note that these are all distinguishable from an "invalid" item pointer
* (which is InvalidBlockNumber/0) as well as from all normal item
* pointers (which have item numbers in the range 1..MaxHeapTuplesPerPage).
*/
#define ItemPointerSetMin(p) \
ItemPointerSet((p), (BlockNumber)0, (OffsetNumber)0)
#define ItemPointerIsMin(p) \
(GinItemPointerGetOffsetNumber(p) == (OffsetNumber)0 && \
GinItemPointerGetBlockNumber(p) == (BlockNumber)0)
#define ItemPointerSetMax(p) \
ItemPointerSet((p), InvalidBlockNumber, (OffsetNumber)0xffff)
#define ItemPointerIsMax(p) \
(GinItemPointerGetOffsetNumber(p) == (OffsetNumber)0xffff && \
GinItemPointerGetBlockNumber(p) == InvalidBlockNumber)
#define ItemPointerSetLossyPage(p, b) \
ItemPointerSet((p), (b), (OffsetNumber)0xffff)
#define ItemPointerIsLossyPage(p) \
(GinItemPointerGetOffsetNumber(p) == (OffsetNumber)0xffff && \
GinItemPointerGetBlockNumber(p) != InvalidBlockNumber)
/*
* Posting item in a non-leaf posting-tree page
*/
typedef struct
{
/* We use BlockIdData not BlockNumber to avoid padding space wastage */
BlockIdData child_blkno;
ItemPointerData key;
} PostingItem;
#define PostingItemGetBlockNumber(pointer) \
BlockIdGetBlockNumber(&(pointer)->child_blkno)
#define PostingItemSetBlockNumber(pointer, blockNumber) \
BlockIdSet(&((pointer)->child_blkno), (blockNumber))
/*
* Category codes to distinguish placeholder nulls from ordinary NULL keys.
* Note that the datatype size and the first two code values are chosen to be
* compatible with the usual usage of bool isNull flags.
*
* GIN_CAT_EMPTY_QUERY is never stored in the index; and notice that it is
* chosen to sort before not after regular key values.
*/
typedef signed char GinNullCategory;
#define GIN_CAT_NORM_KEY 0 /* normal, non-null key value */
#define GIN_CAT_NULL_KEY 1 /* null key value */
#define GIN_CAT_EMPTY_ITEM 2 /* placeholder for zero-key item */
#define GIN_CAT_NULL_ITEM 3 /* placeholder for null item */
#define GIN_CAT_EMPTY_QUERY (-1) /* placeholder for full-scan query */
/*
* Access macros for null category byte in entry tuples
*/
#define GinCategoryOffset(itup,ginstate) \
(IndexInfoFindDataOffset((itup)->t_info) + \
((ginstate)->oneCol ? 0 : sizeof(int16)))
#define GinGetNullCategory(itup,ginstate) \
(*((GinNullCategory *) ((char*)(itup) + GinCategoryOffset(itup,ginstate))))
#define GinSetNullCategory(itup,ginstate,c) \
(*((GinNullCategory *) ((char*)(itup) + GinCategoryOffset(itup,ginstate))) = (c))
/*
* Access macros for leaf-page entry tuples (see discussion in README)
*/
#define GinGetNPosting(itup) GinItemPointerGetOffsetNumber(&(itup)->t_tid)
#define GinSetNPosting(itup,n) ItemPointerSetOffsetNumber(&(itup)->t_tid,n)
#define GIN_TREE_POSTING ((OffsetNumber)0xffff)
#define GinIsPostingTree(itup) (GinGetNPosting(itup) == GIN_TREE_POSTING)
#define GinSetPostingTree(itup, blkno) ( GinSetNPosting((itup),GIN_TREE_POSTING), ItemPointerSetBlockNumber(&(itup)->t_tid, blkno) )
#define GinGetPostingTree(itup) GinItemPointerGetBlockNumber(&(itup)->t_tid)
#define GIN_ITUP_COMPRESSED (1U << 31)
#define GinGetPostingOffset(itup) (GinItemPointerGetBlockNumber(&(itup)->t_tid) & (~GIN_ITUP_COMPRESSED))
#define GinSetPostingOffset(itup,n) ItemPointerSetBlockNumber(&(itup)->t_tid,(n)|GIN_ITUP_COMPRESSED)
#define GinGetPosting(itup) ((Pointer) ((char*)(itup) + GinGetPostingOffset(itup)))
#define GinItupIsCompressed(itup) ((GinItemPointerGetBlockNumber(&(itup)->t_tid) & GIN_ITUP_COMPRESSED) != 0)
/*
* Maximum size of an item on entry tree page. Make sure that we fit at least
* three items on each page. (On regular B-tree indexes, we must fit at least
* three items: two data items and the "high key". In GIN entry tree, we don't
* currently store the high key explicitly, we just use the rightmost item on
* the page, so it would actually be enough to fit two items.)
*/
#define GinMaxItemSize \
Min(INDEX_SIZE_MASK, \
MAXALIGN_DOWN(((BLCKSZ - \
MAXALIGN(SizeOfPageHeaderData + 3 * sizeof(ItemIdData)) - \
MAXALIGN(sizeof(GinPageOpaqueData))) / 3)))
/*
* Access macros for non-leaf entry tuples
*/
#define GinGetDownlink(itup) GinItemPointerGetBlockNumber(&(itup)->t_tid)
#define GinSetDownlink(itup,blkno) ItemPointerSet(&(itup)->t_tid, blkno, InvalidOffsetNumber)
/*
* Data (posting tree) pages
*
* Posting tree pages don't store regular tuples. Non-leaf pages contain
* PostingItems, which are pairs of ItemPointers and child block numbers.
* Leaf pages contain GinPostingLists and an uncompressed array of item
* pointers.
*
* In a leaf page, the compressed posting lists are stored after the regular
* page header, one after each other. Although we don't store regular tuples,
* pd_lower is used to indicate the end of the posting lists. After that, free
* space follows. This layout is compatible with the "standard" heap and
* index page layout described in bufpage.h, so that we can e.g set buffer_std
* when writing WAL records.
*
* In the special space is the GinPageOpaque struct.
*/
#define GinDataLeafPageGetPostingList(page) \
(GinPostingList *) ((PageGetContents(page) + MAXALIGN(sizeof(ItemPointerData))))
#define GinDataLeafPageGetPostingListSize(page) \
(((PageHeader) page)->pd_lower - MAXALIGN(SizeOfPageHeaderData) - MAXALIGN(sizeof(ItemPointerData)))
#define GinDataLeafPageIsEmpty(page) \
(GinPageIsCompressed(page) ? (GinDataLeafPageGetPostingListSize(page) == 0) : (GinPageGetOpaque(page)->maxoff < FirstOffsetNumber))
#define GinDataLeafPageGetFreeSpace(page) PageGetExactFreeSpace(page)
#define GinDataPageGetRightBound(page) ((ItemPointer) PageGetContents(page))
/*
* Pointer to the data portion of a posting tree page. For internal pages,
* that's the beginning of the array of PostingItems. For compressed leaf
* pages, the first compressed posting list. For uncompressed (pre-9.4) leaf
* pages, it's the beginning of the ItemPointer array.
*/
#define GinDataPageGetData(page) \
(PageGetContents(page) + MAXALIGN(sizeof(ItemPointerData)))
/* non-leaf pages contain PostingItems */
#define GinDataPageGetPostingItem(page, i) \
((PostingItem *) (GinDataPageGetData(page) + ((i)-1) * sizeof(PostingItem)))
/*
* Note: there is no GinDataPageGetDataSize macro, because before version
* 9.4, we didn't set pd_lower on data pages. There can be pages in the index
* that were binary-upgraded from earlier versions and still have an invalid
* pd_lower, so we cannot trust it in general. Compressed posting tree leaf
* pages are new in 9.4, however, so we can trust them; see
* GinDataLeafPageGetPostingListSize.
*/
#define GinDataPageSetDataSize(page, size) \
{ \
Assert(size <= GinDataPageMaxDataSize); \
((PageHeader) page)->pd_lower = (size) + MAXALIGN(SizeOfPageHeaderData) + MAXALIGN(sizeof(ItemPointerData)); \
}
#define GinNonLeafDataPageGetFreeSpace(page) \
(GinDataPageMaxDataSize - \
GinPageGetOpaque(page)->maxoff * sizeof(PostingItem))
#define GinDataPageMaxDataSize \
(BLCKSZ - MAXALIGN(SizeOfPageHeaderData) \
- MAXALIGN(sizeof(ItemPointerData)) \
- MAXALIGN(sizeof(GinPageOpaqueData)))
/*
* List pages
*/
#define GinListPageSize \
( BLCKSZ - SizeOfPageHeaderData - MAXALIGN(sizeof(GinPageOpaqueData)) )
/*
* A compressed posting list.
*
* Note: This requires 2-byte alignment.
*/
typedef struct
{
ItemPointerData first; /* first item in this posting list (unpacked) */
uint16 nbytes; /* number of bytes that follow */
unsigned char bytes[FLEXIBLE_ARRAY_MEMBER]; /* varbyte encoded items */
} GinPostingList;
#define SizeOfGinPostingList(plist) (offsetof(GinPostingList, bytes) + SHORTALIGN((plist)->nbytes) )
#define GinNextPostingListSegment(cur) ((GinPostingList *) (((char *) (cur)) + SizeOfGinPostingList((cur))))
#endif /* GINBLOCK_H */

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@ -0,0 +1,217 @@
/*--------------------------------------------------------------------------
* ginxlog.h
* header file for postgres inverted index xlog implementation.
*
* Copyright (c) 2006-2017, PostgreSQL Global Development Group
*
* src/include/access/ginxlog.h
*--------------------------------------------------------------------------
*/
#ifndef GINXLOG_H
#define GINXLOG_H
#include "access/ginblock.h"
#include "access/itup.h"
#include "access/xlogreader.h"
#include "lib/stringinfo.h"
#include "storage/off.h"
#define XLOG_GIN_CREATE_INDEX 0x00
#define XLOG_GIN_CREATE_PTREE 0x10
typedef struct ginxlogCreatePostingTree
{
uint32 size;
/* A compressed posting list follows */
} ginxlogCreatePostingTree;
/*
* The format of the insertion record varies depending on the page type.
* ginxlogInsert is the common part between all variants.
*
* Backup Blk 0: target page
* Backup Blk 1: left child, if this insertion finishes an incomplete split
*/
#define XLOG_GIN_INSERT 0x20
typedef struct
{
uint16 flags; /* GIN_INSERT_ISLEAF and/or GIN_INSERT_ISDATA */
/*
* FOLLOWS:
*
* 1. if not leaf page, block numbers of the left and right child pages
* whose split this insertion finishes, as BlockIdData[2] (beware of
* adding fields in this struct that would make them not 16-bit aligned)
*
* 2. a ginxlogInsertEntry or ginxlogRecompressDataLeaf struct, depending
* on tree type.
*
* NB: the below structs are only 16-bit aligned when appended to a
* ginxlogInsert struct! Beware of adding fields to them that require
* stricter alignment.
*/
} ginxlogInsert;
typedef struct
{
OffsetNumber offset;
bool isDelete;
IndexTupleData tuple; /* variable length */
} ginxlogInsertEntry;
typedef struct
{
uint16 nactions;
/* Variable number of 'actions' follow */
} ginxlogRecompressDataLeaf;
/*
* Note: this struct is currently not used in code, and only acts as
* documentation. The WAL record format is as specified here, but the code
* uses straight access through a Pointer and memcpy to read/write these.
*/
typedef struct
{
uint8 segno; /* segment this action applies to */
char type; /* action type (see below) */
/*
* Action-specific data follows. For INSERT and REPLACE actions that is a
* GinPostingList struct. For ADDITEMS, a uint16 for the number of items
* added, followed by the items themselves as ItemPointers. DELETE actions
* have no further data.
*/
} ginxlogSegmentAction;
/* Action types */
#define GIN_SEGMENT_UNMODIFIED 0 /* no action (not used in WAL records) */
#define GIN_SEGMENT_DELETE 1 /* a whole segment is removed */
#define GIN_SEGMENT_INSERT 2 /* a whole segment is added */
#define GIN_SEGMENT_REPLACE 3 /* a segment is replaced */
#define GIN_SEGMENT_ADDITEMS 4 /* items are added to existing segment */
typedef struct
{
OffsetNumber offset;
PostingItem newitem;
} ginxlogInsertDataInternal;
/*
* Backup Blk 0: new left page (= original page, if not root split)
* Backup Blk 1: new right page
* Backup Blk 2: original page / new root page, if root split
* Backup Blk 3: left child, if this insertion completes an earlier split
*/
#define XLOG_GIN_SPLIT 0x30
typedef struct ginxlogSplit
{
RelFileNode node;
BlockNumber rrlink; /* right link, or root's blocknumber if root
* split */
BlockNumber leftChildBlkno; /* valid on a non-leaf split */
BlockNumber rightChildBlkno;
uint16 flags; /* see below */
} ginxlogSplit;
/*
* Flags used in ginxlogInsert and ginxlogSplit records
*/
#define GIN_INSERT_ISDATA 0x01 /* for both insert and split records */
#define GIN_INSERT_ISLEAF 0x02 /* ditto */
#define GIN_SPLIT_ROOT 0x04 /* only for split records */
/*
* Vacuum simply WAL-logs the whole page, when anything is modified. This
* is functionally identical to heap_newpage records, but is kept separate for
* debugging purposes. (When inspecting the WAL stream, it's easier to see
* what's going on when GIN vacuum records are marked as such, not as heap
* records.) This is currently only used for entry tree leaf pages.
*/
#define XLOG_GIN_VACUUM_PAGE 0x40
/*
* Vacuuming posting tree leaf page is WAL-logged like recompression caused
* by insertion.
*/
#define XLOG_GIN_VACUUM_DATA_LEAF_PAGE 0x90
typedef struct ginxlogVacuumDataLeafPage
{
ginxlogRecompressDataLeaf data;
} ginxlogVacuumDataLeafPage;
/*
* Backup Blk 0: deleted page
* Backup Blk 1: parent
* Backup Blk 2: left sibling
*/
#define XLOG_GIN_DELETE_PAGE 0x50
typedef struct ginxlogDeletePage
{
OffsetNumber parentOffset;
BlockNumber rightLink;
} ginxlogDeletePage;
#define XLOG_GIN_UPDATE_META_PAGE 0x60
/*
* Backup Blk 0: metapage
* Backup Blk 1: tail page
*/
typedef struct ginxlogUpdateMeta
{
RelFileNode node;
GinMetaPageData metadata;
BlockNumber prevTail;
BlockNumber newRightlink;
int32 ntuples; /* if ntuples > 0 then metadata.tail was
* updated with that many tuples; else new sub
* list was inserted */
/* array of inserted tuples follows */
} ginxlogUpdateMeta;
#define XLOG_GIN_INSERT_LISTPAGE 0x70
typedef struct ginxlogInsertListPage
{
BlockNumber rightlink;
int32 ntuples;
/* array of inserted tuples follows */
} ginxlogInsertListPage;
/*
* Backup Blk 0: metapage
* Backup Blk 1 to (ndeleted + 1): deleted pages
*/
#define XLOG_GIN_DELETE_LISTPAGE 0x80
/*
* The WAL record for deleting list pages must contain a block reference to
* all the deleted pages, so the number of pages that can be deleted in one
* record is limited by XLR_MAX_BLOCK_ID. (block_id 0 is used for the
* metapage.)
*/
#define GIN_NDELETE_AT_ONCE Min(16, XLR_MAX_BLOCK_ID - 1)
typedef struct ginxlogDeleteListPages
{
GinMetaPageData metadata;
int32 ndeleted;
} ginxlogDeleteListPages;
extern void gin_redo(XLogReaderState *record);
extern void gin_desc(StringInfo buf, XLogReaderState *record);
extern const char *gin_identify(uint8 info);
extern void gin_xlog_startup(void);
extern void gin_xlog_cleanup(void);
extern void gin_mask(char *pagedata, BlockNumber blkno);
#endif /* GINXLOG_H */

55
src/include/access/gist_private.h
View File

@ -17,7 +17,6 @@
#include "access/amapi.h" #include "access/amapi.h"
#include "access/gist.h" #include "access/gist.h"
#include "access/itup.h" #include "access/itup.h"
#include "access/xlogreader.h"
#include "fmgr.h" #include "fmgr.h"
#include "lib/pairingheap.h" #include "lib/pairingheap.h"
#include "storage/bufmgr.h" #include "storage/bufmgr.h"
@ -177,51 +176,7 @@ typedef struct GISTScanOpaqueData
typedef GISTScanOpaqueData *GISTScanOpaque; typedef GISTScanOpaqueData *GISTScanOpaque;
/* despite the name, gistxlogPage is not part of any xlog record */
/* XLog stuff */
#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;
typedef struct gistxlogPage typedef struct gistxlogPage
{ {
BlockNumber blkno; BlockNumber blkno;
@ -454,14 +409,6 @@ extern bool gistplacetopage(Relation rel, Size freespace, GISTSTATE *giststate,
extern SplitedPageLayout *gistSplit(Relation r, Page page, IndexTuple *itup, extern SplitedPageLayout *gistSplit(Relation r, Page page, IndexTuple *itup,
int len, GISTSTATE *giststate); int len, GISTSTATE *giststate);
/* gistxlog.c */
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);
extern XLogRecPtr gistXLogUpdate(Buffer buffer, extern XLogRecPtr gistXLogUpdate(Buffer buffer,
OffsetNumber *todelete, int ntodelete, OffsetNumber *todelete, int ntodelete,
IndexTuple *itup, int ntup, IndexTuple *itup, int ntup,

69
src/include/access/gistxlog.h Normal file
View File

@ -0,0 +1,69 @@
/*-------------------------------------------------------------------------
*
* gistxlog.h
* gist xlog routines
*
* Portions Copyright (c) 1996-2017, 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

2
src/include/access/hash_xlog.h
View File

@ -14,8 +14,8 @@
#ifndef HASH_XLOG_H #ifndef HASH_XLOG_H
#define HASH_XLOG_H #define HASH_XLOG_H
#include "access/hash.h"
#include "access/xlogreader.h" #include "access/xlogreader.h"
#include "lib/stringinfo.h"
extern void hash_redo(XLogReaderState *record); extern void hash_redo(XLogReaderState *record);

234
src/include/access/nbtree.h
View File

@ -204,232 +204,6 @@ typedef struct BTMetaPageData
#define P_FIRSTKEY ((OffsetNumber) 2) #define P_FIRSTKEY ((OffsetNumber) 2)
#define P_FIRSTDATAKEY(opaque) (P_RIGHTMOST(opaque) ? P_HIKEY : P_FIRSTKEY) #define P_FIRSTDATAKEY(opaque) (P_RIGHTMOST(opaque) ? P_HIKEY : P_FIRSTKEY)
/*
* XLOG records for btree operations
*
* XLOG allows to store some information in high 4 bits of log
* record xl_info field
*/
#define XLOG_BTREE_INSERT_LEAF 0x00 /* add index tuple without split */
#define XLOG_BTREE_INSERT_UPPER 0x10 /* same, on a non-leaf page */
#define XLOG_BTREE_INSERT_META 0x20 /* same, plus update metapage */
#define XLOG_BTREE_SPLIT_L 0x30 /* add index tuple with split */
#define XLOG_BTREE_SPLIT_R 0x40 /* as above, new item on right */
#define XLOG_BTREE_SPLIT_L_ROOT 0x50 /* add tuple with split of root */
#define XLOG_BTREE_SPLIT_R_ROOT 0x60 /* as above, new item on right */
#define XLOG_BTREE_DELETE 0x70 /* delete leaf index tuples for a page */
#define XLOG_BTREE_UNLINK_PAGE 0x80 /* delete a half-dead page */
#define XLOG_BTREE_UNLINK_PAGE_META 0x90 /* same, and update metapage */
#define XLOG_BTREE_NEWROOT 0xA0 /* new root page */
#define XLOG_BTREE_MARK_PAGE_HALFDEAD 0xB0 /* mark a leaf as half-dead */
#define XLOG_BTREE_VACUUM 0xC0 /* delete entries on a page during
* vacuum */
#define XLOG_BTREE_REUSE_PAGE 0xD0 /* old page is about to be reused from
* FSM */
/*
* All that we need to regenerate the meta-data page
*/
typedef struct xl_btree_metadata
{
BlockNumber root;
uint32 level;
BlockNumber fastroot;
uint32 fastlevel;
} xl_btree_metadata;
/*
* This is what we need to know about simple (without split) insert.
*
* This data record is used for INSERT_LEAF, INSERT_UPPER, INSERT_META.
* Note that INSERT_META implies it's not a leaf page.
*
* Backup Blk 0: original page (data contains the inserted tuple)
* Backup Blk 1: child's left sibling, if INSERT_UPPER or INSERT_META
* Backup Blk 2: xl_btree_metadata, if INSERT_META
*/
typedef struct xl_btree_insert
{
OffsetNumber offnum;
} xl_btree_insert;
#define SizeOfBtreeInsert (offsetof(xl_btree_insert, offnum) + sizeof(OffsetNumber))
/*
* On insert with split, we save all the items going into the right sibling
* so that we can restore it completely from the log record. This way takes
* less xlog space than the normal approach, because if we did it standardly,
* XLogInsert would almost always think the right page is new and store its
* whole page image. The left page, however, is handled in the normal
* incremental-update fashion.
*
* Note: the four XLOG_BTREE_SPLIT xl_info codes all use this data record.
* The _L and _R variants indicate whether the inserted tuple went into the
* left or right split page (and thus, whether newitemoff and the new item
* are stored or not). The _ROOT variants indicate that we are splitting
* the root page, and thus that a newroot record rather than an insert or
* split record should follow. Note that a split record never carries a
* metapage update --- we'll do that in the parent-level update.
*
* Backup Blk 0: original page / new left page
*
* The left page's data portion contains the new item, if it's the _L variant.
* (In the _R variants, the new item is one of the right page's tuples.)
* If level > 0, an IndexTuple representing the HIKEY of the left page
* follows. We don't need this on leaf pages, because it's the same as the
* leftmost key in the new right page.
*
* Backup Blk 1: new right page
*
* The right page's data portion contains the right page's tuples in the
* form used by _bt_restore_page.
*
* Backup Blk 2: next block (orig page's rightlink), if any
* Backup Blk 3: child's left sibling, if non-leaf split
*/
typedef struct xl_btree_split
{
uint32 level; /* tree level of page being split */
OffsetNumber firstright; /* first item moved to right page */
OffsetNumber newitemoff; /* new item's offset (if placed on left page) */
} xl_btree_split;
#define SizeOfBtreeSplit (offsetof(xl_btree_split, newitemoff) + sizeof(OffsetNumber))
/*
* This is what we need to know about delete of individual leaf index tuples.
* The WAL record can represent deletion of any number of index tuples on a
* single index page when *not* executed by VACUUM.
*
* Backup Blk 0: index page
*/
typedef struct xl_btree_delete
{
RelFileNode hnode; /* RelFileNode of the heap the index currently
* points at */
int nitems;
/* TARGET OFFSET NUMBERS FOLLOW AT THE END */
} xl_btree_delete;
#define SizeOfBtreeDelete (offsetof(xl_btree_delete, nitems) + sizeof(int))
/*
* This is what we need to know about page reuse within btree.
*/
typedef struct xl_btree_reuse_page
{
RelFileNode node;
BlockNumber block;
TransactionId latestRemovedXid;
} xl_btree_reuse_page;
#define SizeOfBtreeReusePage (sizeof(xl_btree_reuse_page))
/*
* This is what we need to know about vacuum of individual leaf index tuples.
* The WAL record can represent deletion of any number of index tuples on a
* single index page when executed by VACUUM.
*
* For MVCC scans, lastBlockVacuumed will be set to InvalidBlockNumber.
* For a non-MVCC index scans there is an additional correctness requirement
* for applying these changes during recovery, which is that we must do one
* of these two things for every block in the index:
* * lock the block for cleanup and apply any required changes
* * EnsureBlockUnpinned()
* The purpose of this is to ensure that no index scans started before we
* finish scanning the index are still running by the time we begin to remove
* heap tuples.
*
* Any changes to any one block are registered on just one WAL record. All
* blocks that we need to run EnsureBlockUnpinned() are listed as a block range
* starting from the last block vacuumed through until this one. Individual
* block numbers aren't given.
*
* Note that the *last* WAL record in any vacuum of an index is allowed to
* have a zero length array of offsets. Earlier records must have at least one.
*/
typedef struct xl_btree_vacuum
{
BlockNumber lastBlockVacuumed;
/* TARGET OFFSET NUMBERS FOLLOW */
} xl_btree_vacuum;
#define SizeOfBtreeVacuum (offsetof(xl_btree_vacuum, lastBlockVacuumed) + sizeof(BlockNumber))
/*
* This is what we need to know about marking an empty branch for deletion.
* The target identifies the tuple removed from the parent page (note that we
* remove this tuple's downlink and the *following* tuple's key). Note that
* the leaf page is empty, so we don't need to store its content --- it is
* just reinitialized during recovery using the rest of the fields.
*
* Backup Blk 0: leaf block
* Backup Blk 1: top parent
*/
typedef struct xl_btree_mark_page_halfdead
{
OffsetNumber poffset; /* deleted tuple id in parent page */
/* information needed to recreate the leaf page: */
BlockNumber leafblk; /* leaf block ultimately being deleted */
BlockNumber leftblk; /* leaf block's left sibling, if any */
BlockNumber rightblk; /* leaf block's right sibling */
BlockNumber topparent; /* topmost internal page in the branch */
} xl_btree_mark_page_halfdead;
#define SizeOfBtreeMarkPageHalfDead (offsetof(xl_btree_mark_page_halfdead, topparent) + sizeof(BlockNumber))
/*
* This is what we need to know about deletion of a btree page. Note we do
* not store any content for the deleted page --- it is just rewritten as empty
* during recovery, apart from resetting the btpo.xact.
*
* Backup Blk 0: target block being deleted
* Backup Blk 1: target block's left sibling, if any
* Backup Blk 2: target block's right sibling
* Backup Blk 3: leaf block (if different from target)
* Backup Blk 4: metapage (if rightsib becomes new fast root)
*/
typedef struct xl_btree_unlink_page
{
BlockNumber leftsib; /* target block's left sibling, if any */
BlockNumber rightsib; /* target block's right sibling */
/*
* Information needed to recreate the leaf page, when target is an
* internal page.
*/
BlockNumber leafleftsib;
BlockNumber leafrightsib;
BlockNumber topparent; /* next child down in the branch */
TransactionId btpo_xact; /* value of btpo.xact for use in recovery */
/* xl_btree_metadata FOLLOWS IF XLOG_BTREE_UNLINK_PAGE_META */
} xl_btree_unlink_page;
#define SizeOfBtreeUnlinkPage (offsetof(xl_btree_unlink_page, btpo_xact) + sizeof(TransactionId))
/*
* New root log record. There are zero tuples if this is to establish an
* empty root, or two if it is the result of splitting an old root.
*
* Note that although this implies rewriting the metadata page, we don't need
* an xl_btree_metadata record --- the rootblk and level are sufficient.
*
* Backup Blk 0: new root page (2 tuples as payload, if splitting old root)
* Backup Blk 1: left child (if splitting an old root)
* Backup Blk 2: metapage
*/
typedef struct xl_btree_newroot
{
BlockNumber rootblk; /* location of new root (redundant with blk 0) */
uint32 level; /* its tree level */
} xl_btree_newroot;
#define SizeOfBtreeNewroot (offsetof(xl_btree_newroot, level) + sizeof(uint32))
/* /*
* Operator strategy numbers for B-tree have been moved to access/stratnum.h, * Operator strategy numbers for B-tree have been moved to access/stratnum.h,
@ -769,12 +543,4 @@ extern void _bt_spool(BTSpool *btspool, ItemPointer self,
Datum *values, bool *isnull); Datum *values, bool *isnull);
extern void _bt_leafbuild(BTSpool *btspool, BTSpool *spool2); extern void _bt_leafbuild(BTSpool *btspool, BTSpool *spool2);
/*
* prototypes for functions in nbtxlog.c
*/
extern void btree_redo(XLogReaderState *record);
extern void btree_desc(StringInfo buf, XLogReaderState *record);
extern const char *btree_identify(uint8 info);
extern void btree_mask(char *pagedata, BlockNumber blkno);
#endif /* NBTREE_H */ #endif /* NBTREE_H */

255
src/include/access/nbtxlog.h Normal file
View File

@ -0,0 +1,255 @@
/*-------------------------------------------------------------------------
*
* nbtxlog.h
* header file for postgres btree xlog routines
*
* Portions Copyright (c) 1996-2017, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* src/include/access/nbtxlog.h
*
*-------------------------------------------------------------------------
*/
#ifndef NBTXLOG_H
#define NBTXLOG_H
#include "access/xlogreader.h"
#include "lib/stringinfo.h"
#include "storage/off.h"
/*
* XLOG records for btree operations
*
* XLOG allows to store some information in high 4 bits of log
* record xl_info field
*/
#define XLOG_BTREE_INSERT_LEAF 0x00 /* add index tuple without split */
#define XLOG_BTREE_INSERT_UPPER 0x10 /* same, on a non-leaf page */
#define XLOG_BTREE_INSERT_META 0x20 /* same, plus update metapage */
#define XLOG_BTREE_SPLIT_L 0x30 /* add index tuple with split */
#define XLOG_BTREE_SPLIT_R 0x40 /* as above, new item on right */
#define XLOG_BTREE_SPLIT_L_ROOT 0x50 /* add tuple with split of root */
#define XLOG_BTREE_SPLIT_R_ROOT 0x60 /* as above, new item on right */
#define XLOG_BTREE_DELETE 0x70 /* delete leaf index tuples for a page */
#define XLOG_BTREE_UNLINK_PAGE 0x80 /* delete a half-dead page */
#define XLOG_BTREE_UNLINK_PAGE_META 0x90 /* same, and update metapage */
#define XLOG_BTREE_NEWROOT 0xA0 /* new root page */
#define XLOG_BTREE_MARK_PAGE_HALFDEAD 0xB0 /* mark a leaf as half-dead */
#define XLOG_BTREE_VACUUM 0xC0 /* delete entries on a page during
* vacuum */
#define XLOG_BTREE_REUSE_PAGE 0xD0 /* old page is about to be reused from
* FSM */
/*
* All that we need to regenerate the meta-data page
*/
typedef struct xl_btree_metadata
{
BlockNumber root;
uint32 level;
BlockNumber fastroot;
uint32 fastlevel;
} xl_btree_metadata;
/*
* This is what we need to know about simple (without split) insert.
*
* This data record is used for INSERT_LEAF, INSERT_UPPER, INSERT_META.
* Note that INSERT_META implies it's not a leaf page.
*
* Backup Blk 0: original page (data contains the inserted tuple)
* Backup Blk 1: child's left sibling, if INSERT_UPPER or INSERT_META
* Backup Blk 2: xl_btree_metadata, if INSERT_META
*/
typedef struct xl_btree_insert
{
OffsetNumber offnum;
} xl_btree_insert;
#define SizeOfBtreeInsert (offsetof(xl_btree_insert, offnum) + sizeof(OffsetNumber))
/*
* On insert with split, we save all the items going into the right sibling
* so that we can restore it completely from the log record. This way takes
* less xlog space than the normal approach, because if we did it standardly,
* XLogInsert would almost always think the right page is new and store its
* whole page image. The left page, however, is handled in the normal
* incremental-update fashion.
*
* Note: the four XLOG_BTREE_SPLIT xl_info codes all use this data record.
* The _L and _R variants indicate whether the inserted tuple went into the
* left or right split page (and thus, whether newitemoff and the new item
* are stored or not). The _ROOT variants indicate that we are splitting
* the root page, and thus that a newroot record rather than an insert or
* split record should follow. Note that a split record never carries a
* metapage update --- we'll do that in the parent-level update.
*
* Backup Blk 0: original page / new left page
*
* The left page's data portion contains the new item, if it's the _L variant.
* (In the _R variants, the new item is one of the right page's tuples.)
* If level > 0, an IndexTuple representing the HIKEY of the left page
* follows. We don't need this on leaf pages, because it's the same as the
* leftmost key in the new right page.
*
* Backup Blk 1: new right page
*
* The right page's data portion contains the right page's tuples in the
* form used by _bt_restore_page.
*
* Backup Blk 2: next block (orig page's rightlink), if any
* Backup Blk 3: child's left sibling, if non-leaf split
*/
typedef struct xl_btree_split
{
uint32 level; /* tree level of page being split */
OffsetNumber firstright; /* first item moved to right page */
OffsetNumber newitemoff; /* new item's offset (if placed on left page) */
} xl_btree_split;
#define SizeOfBtreeSplit (offsetof(xl_btree_split, newitemoff) + sizeof(OffsetNumber))
/*
* This is what we need to know about delete of individual leaf index tuples.
* The WAL record can represent deletion of any number of index tuples on a
* single index page when *not* executed by VACUUM.
*
* Backup Blk 0: index page
*/
typedef struct xl_btree_delete
{
RelFileNode hnode; /* RelFileNode of the heap the index currently
* points at */
int nitems;
/* TARGET OFFSET NUMBERS FOLLOW AT THE END */
} xl_btree_delete;
#define SizeOfBtreeDelete (offsetof(xl_btree_delete, nitems) + sizeof(int))
/*
* This is what we need to know about page reuse within btree.
*/
typedef struct xl_btree_reuse_page
{
RelFileNode node;
BlockNumber block;
TransactionId latestRemovedXid;
} xl_btree_reuse_page;
#define SizeOfBtreeReusePage (sizeof(xl_btree_reuse_page))
/*
* This is what we need to know about vacuum of individual leaf index tuples.
* The WAL record can represent deletion of any number of index tuples on a
* single index page when executed by VACUUM.
*
* For MVCC scans, lastBlockVacuumed will be set to InvalidBlockNumber.
* For a non-MVCC index scans there is an additional correctness requirement
* for applying these changes during recovery, which is that we must do one
* of these two things for every block in the index:
* * lock the block for cleanup and apply any required changes
* * EnsureBlockUnpinned()
* The purpose of this is to ensure that no index scans started before we
* finish scanning the index are still running by the time we begin to remove
* heap tuples.
*
* Any changes to any one block are registered on just one WAL record. All
* blocks that we need to run EnsureBlockUnpinned() are listed as a block range
* starting from the last block vacuumed through until this one. Individual
* block numbers aren't given.
*
* Note that the *last* WAL record in any vacuum of an index is allowed to
* have a zero length array of offsets. Earlier records must have at least one.
*/
typedef struct xl_btree_vacuum
{
BlockNumber lastBlockVacuumed;
/* TARGET OFFSET NUMBERS FOLLOW */
} xl_btree_vacuum;
#define SizeOfBtreeVacuum (offsetof(xl_btree_vacuum, lastBlockVacuumed) + sizeof(BlockNumber))
/*
* This is what we need to know about marking an empty branch for deletion.
* The target identifies the tuple removed from the parent page (note that we
* remove this tuple's downlink and the *following* tuple's key). Note that
* the leaf page is empty, so we don't need to store its content --- it is
* just reinitialized during recovery using the rest of the fields.
*
* Backup Blk 0: leaf block
* Backup Blk 1: top parent
*/
typedef struct xl_btree_mark_page_halfdead
{
OffsetNumber poffset; /* deleted tuple id in parent page */
/* information needed to recreate the leaf page: */
BlockNumber leafblk; /* leaf block ultimately being deleted */
BlockNumber leftblk; /* leaf block's left sibling, if any */
BlockNumber rightblk; /* leaf block's right sibling */
BlockNumber topparent; /* topmost internal page in the branch */
} xl_btree_mark_page_halfdead;
#define SizeOfBtreeMarkPageHalfDead (offsetof(xl_btree_mark_page_halfdead, topparent) + sizeof(BlockNumber))
/*
* This is what we need to know about deletion of a btree page. Note we do
* not store any content for the deleted page --- it is just rewritten as empty
* during recovery, apart from resetting the btpo.xact.
*
* Backup Blk 0: target block being deleted
* Backup Blk 1: target block's left sibling, if any
* Backup Blk 2: target block's right sibling
* Backup Blk 3: leaf block (if different from target)
* Backup Blk 4: metapage (if rightsib becomes new fast root)
*/
typedef struct xl_btree_unlink_page
{
BlockNumber leftsib; /* target block's left sibling, if any */
BlockNumber rightsib; /* target block's right sibling */
/*
* Information needed to recreate the leaf page, when target is an
* internal page.
*/
BlockNumber leafleftsib;
BlockNumber leafrightsib;
BlockNumber topparent; /* next child down in the branch */
TransactionId btpo_xact; /* value of btpo.xact for use in recovery */
/* xl_btree_metadata FOLLOWS IF XLOG_BTREE_UNLINK_PAGE_META */
} xl_btree_unlink_page;
#define SizeOfBtreeUnlinkPage (offsetof(xl_btree_unlink_page, btpo_xact) + sizeof(TransactionId))
/*
* New root log record. There are zero tuples if this is to establish an
* empty root, or two if it is the result of splitting an old root.
*
* Note that although this implies rewriting the metadata page, we don't need
* an xl_btree_metadata record --- the rootblk and level are sufficient.
*
* Backup Blk 0: new root page (2 tuples as payload, if splitting old root)
* Backup Blk 1: left child (if splitting an old root)
* Backup Blk 2: metapage
*/
typedef struct xl_btree_newroot
{
BlockNumber rootblk; /* location of new root (redundant with blk 0) */
uint32 level; /* its tree level */
} xl_btree_newroot;
#define SizeOfBtreeNewroot (offsetof(xl_btree_newroot, level) + sizeof(uint32))
/*
* prototypes for functions in nbtxlog.c
*/
extern void btree_redo(XLogReaderState *record);
extern void btree_desc(StringInfo buf, XLogReaderState *record);
extern const char *btree_identify(uint8 info);
extern void btree_mask(char *pagedata, BlockNumber blkno);
#endif /* NBXLOG_H */

8
src/include/access/spgist.h
View File

@ -214,12 +214,4 @@ extern IndexBulkDeleteResult *spgvacuumcleanup(IndexVacuumInfo *info,
/* spgvalidate.c */ /* spgvalidate.c */
extern bool spgvalidate(Oid opclassoid); extern bool spgvalidate(Oid opclassoid);
/* spgxlog.c */
extern void spg_redo(XLogReaderState *record);
extern void spg_desc(StringInfo buf, XLogReaderState *record);
extern const char *spg_identify(uint8 info);
extern void spg_xlog_startup(void);
extern void spg_xlog_cleanup(void);
extern void spg_mask(char *pagedata, BlockNumber blkno);
#endif /* SPGIST_H */ #endif /* SPGIST_H */

230
src/include/access/spgist_private.h
View File

@ -354,242 +354,12 @@ typedef SpGistDeadTupleData *SpGistDeadTuple;
* XLOG stuff * XLOG stuff
*/ */
/* XLOG record types for SPGiST */
#define XLOG_SPGIST_CREATE_INDEX 0x00
#define XLOG_SPGIST_ADD_LEAF 0x10
#define XLOG_SPGIST_MOVE_LEAFS 0x20
#define XLOG_SPGIST_ADD_NODE 0x30
#define XLOG_SPGIST_SPLIT_TUPLE 0x40
#define XLOG_SPGIST_PICKSPLIT 0x50
#define XLOG_SPGIST_VACUUM_LEAF 0x60
#define XLOG_SPGIST_VACUUM_ROOT 0x70
#define XLOG_SPGIST_VACUUM_REDIRECT 0x80
/*
* Some redo functions need an SpGistState, although only a few of its fields
* need to be valid. spgxlogState carries the required info in xlog records.
* (See fillFakeState in spgxlog.c for more comments.)
*/
typedef struct spgxlogState
{
TransactionId myXid;
bool isBuild;
} spgxlogState;
#define STORE_STATE(s, d) \ #define STORE_STATE(s, d) \
do { \ do { \
(d).myXid = (s)->myXid; \ (d).myXid = (s)->myXid; \
(d).isBuild = (s)->isBuild; \ (d).isBuild = (s)->isBuild; \
} while(0) } while(0)
/*
* Backup Blk 0: destination page for leaf tuple
* Backup Blk 1: parent page (if any)
*/
typedef struct spgxlogAddLeaf
{
bool newPage; /* init dest page? */
bool storesNulls; /* page is in the nulls tree? */
OffsetNumber offnumLeaf; /* offset where leaf tuple gets placed */
OffsetNumber offnumHeadLeaf; /* offset of head tuple in chain, if any */
OffsetNumber offnumParent; /* where the parent downlink is, if any */
uint16 nodeI;
/* new leaf tuple follows (unaligned!) */
} spgxlogAddLeaf;
/*
* Backup Blk 0: source leaf page
* Backup Blk 1: destination leaf page
* Backup Blk 2: parent page
*/
typedef struct spgxlogMoveLeafs
{
uint16 nMoves; /* number of tuples moved from source page */
bool newPage; /* init dest page? */
bool replaceDead; /* are we replacing a DEAD source tuple? */
bool storesNulls; /* pages are in the nulls tree? */
/* where the parent downlink is */
OffsetNumber offnumParent;
uint16 nodeI;
spgxlogState stateSrc;
/*----------
* data follows:
* array of deleted tuple numbers, length nMoves
* array of inserted tuple numbers, length nMoves + 1 or 1
* list of leaf tuples, length nMoves + 1 or 1 (unaligned!)
*
* Note: if replaceDead is true then there is only one inserted tuple
* number and only one leaf tuple in the data, because we are not copying
* the dead tuple from the source
*----------
*/
OffsetNumber offsets[FLEXIBLE_ARRAY_MEMBER];
} spgxlogMoveLeafs;
#define SizeOfSpgxlogMoveLeafs offsetof(spgxlogMoveLeafs, offsets)
/*
* Backup Blk 0: original page
* Backup Blk 1: where new tuple goes, if not same place
* Backup Blk 2: where parent downlink is, if updated and different from
* the old and new
*/
typedef struct spgxlogAddNode
{
/*
* Offset of the original inner tuple, in the original page (on backup
* block 0).
*/
OffsetNumber offnum;
/*
* Offset of the new tuple, on the new page (on backup block 1). Invalid,
* if we overwrote the old tuple in the original page).
*/
OffsetNumber offnumNew;
bool newPage; /* init new page? */
/*----
* Where is the parent downlink? parentBlk indicates which page it's on,
* and offnumParent is the offset within the page. The possible values for
* parentBlk are:
*
* 0: parent == original page
* 1: parent == new page
* 2: parent == different page (blk ref 2)
* -1: parent not updated
*----
*/
int8 parentBlk;
OffsetNumber offnumParent; /* offset within the parent page */
uint16 nodeI;
spgxlogState stateSrc;
/*
* updated inner tuple follows (unaligned!)
*/
} spgxlogAddNode;
/*
* Backup Blk 0: where the prefix tuple goes
* Backup Blk 1: where the postfix tuple goes (if different page)
*/
typedef struct spgxlogSplitTuple
{
/* where the prefix tuple goes */
OffsetNumber offnumPrefix;
/* where the postfix tuple goes */
OffsetNumber offnumPostfix;
bool newPage; /* need to init that page? */
bool postfixBlkSame; /* was postfix tuple put on same page as
* prefix? */
/*
* new prefix inner tuple follows, then new postfix inner tuple (both are
* unaligned!)
*/
} spgxlogSplitTuple;
/*
* Buffer references in the rdata array are:
* Backup Blk 0: Src page (only if not root)
* Backup Blk 1: Dest page (if used)
* Backup Blk 2: Inner page
* Backup Blk 3: Parent page (if any, and different from Inner)
*/
typedef struct spgxlogPickSplit
{
bool isRootSplit;
uint16 nDelete; /* n to delete from Src */
uint16 nInsert; /* n to insert on Src and/or Dest */
bool initSrc; /* re-init the Src page? */
bool initDest; /* re-init the Dest page? */
/* where to put new inner tuple */
OffsetNumber offnumInner;
bool initInner; /* re-init the Inner page? */
bool storesNulls; /* pages are in the nulls tree? */
/* where the parent downlink is, if any */
bool innerIsParent; /* is parent the same as inner page? */
OffsetNumber offnumParent;
uint16 nodeI;
spgxlogState stateSrc;
/*----------
* data follows:
* array of deleted tuple numbers, length nDelete
* array of inserted tuple numbers, length nInsert
* array of page selector bytes for inserted tuples, length nInsert
* new inner tuple (unaligned!)
* list of leaf tuples, length nInsert (unaligned!)
*----------
*/
OffsetNumber offsets[FLEXIBLE_ARRAY_MEMBER];
} spgxlogPickSplit;
#define SizeOfSpgxlogPickSplit offsetof(spgxlogPickSplit, offsets)
typedef struct spgxlogVacuumLeaf
{
uint16 nDead; /* number of tuples to become DEAD */
uint16 nPlaceholder; /* number of tuples to become PLACEHOLDER */
uint16 nMove; /* number of tuples to move */
uint16 nChain; /* number of tuples to re-chain */
spgxlogState stateSrc;
/*----------
* data follows:
* tuple numbers to become DEAD
* tuple numbers to become PLACEHOLDER
* tuple numbers to move from (and replace with PLACEHOLDER)
* tuple numbers to move to (replacing what is there)
* tuple numbers to update nextOffset links of
* tuple numbers to insert in nextOffset links
*----------
*/
OffsetNumber offsets[FLEXIBLE_ARRAY_MEMBER];
} spgxlogVacuumLeaf;
#define SizeOfSpgxlogVacuumLeaf offsetof(spgxlogVacuumLeaf, offsets)
typedef struct spgxlogVacuumRoot
{
/* vacuum a root page when it is also a leaf */
uint16 nDelete; /* number of tuples to delete */
spgxlogState stateSrc;
/* offsets of tuples to delete follow */
OffsetNumber offsets[FLEXIBLE_ARRAY_MEMBER];
} spgxlogVacuumRoot;
#define SizeOfSpgxlogVacuumRoot offsetof(spgxlogVacuumRoot, offsets)
typedef struct spgxlogVacuumRedirect
{
uint16 nToPlaceholder; /* number of redirects to make placeholders */
OffsetNumber firstPlaceholder; /* first placeholder tuple to remove */
TransactionId newestRedirectXid; /* newest XID of removed redirects */
/* offsets of redirect tuples to make placeholders follow */
OffsetNumber offsets[FLEXIBLE_ARRAY_MEMBER];
} spgxlogVacuumRedirect;
#define SizeOfSpgxlogVacuumRedirect offsetof(spgxlogVacuumRedirect, offsets)
/* /*
* The "flags" argument for SpGistGetBuffer should be either GBUF_LEAF to * The "flags" argument for SpGistGetBuffer should be either GBUF_LEAF to
* get a leaf page, or GBUF_INNER_PARITY(blockNumber) to get an inner * get a leaf page, or GBUF_INNER_PARITY(blockNumber) to get an inner

257
src/include/access/spgxlog.h Normal file
View File

@ -0,0 +1,257 @@
/*-------------------------------------------------------------------------
*
* spgxlog.h
* xlog declarations for SP-GiST access method.
*
* Portions Copyright (c) 1996-2017, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* src/include/access/spgxlog.h
*
*-------------------------------------------------------------------------
*/
#ifndef SPGXLOG_H
#define SPGXLOG_H
#include "access/xlogreader.h"
#include "lib/stringinfo.h"
#include "storage/off.h"
/* XLOG record types for SPGiST */
#define XLOG_SPGIST_CREATE_INDEX 0x00
#define XLOG_SPGIST_ADD_LEAF 0x10
#define XLOG_SPGIST_MOVE_LEAFS 0x20
#define XLOG_SPGIST_ADD_NODE 0x30
#define XLOG_SPGIST_SPLIT_TUPLE 0x40
#define XLOG_SPGIST_PICKSPLIT 0x50
#define XLOG_SPGIST_VACUUM_LEAF 0x60
#define XLOG_SPGIST_VACUUM_ROOT 0x70
#define XLOG_SPGIST_VACUUM_REDIRECT 0x80
/*
* Some redo functions need an SpGistState, although only a few of its fields
* need to be valid. spgxlogState carries the required info in xlog records.
* (See fillFakeState in spgxlog.c for more comments.)
*/
typedef struct spgxlogState
{
TransactionId myXid;
bool isBuild;
} spgxlogState;
/*
* Backup Blk 0: destination page for leaf tuple
* Backup Blk 1: parent page (if any)
*/
typedef struct spgxlogAddLeaf
{
bool newPage; /* init dest page? */
bool storesNulls; /* page is in the nulls tree? */
OffsetNumber offnumLeaf; /* offset where leaf tuple gets placed */
OffsetNumber offnumHeadLeaf; /* offset of head tuple in chain, if any */
OffsetNumber offnumParent; /* where the parent downlink is, if any */
uint16 nodeI;
/* new leaf tuple follows (unaligned!) */
} spgxlogAddLeaf;
/*
* Backup Blk 0: source leaf page
* Backup Blk 1: destination leaf page
* Backup Blk 2: parent page
*/
typedef struct spgxlogMoveLeafs
{
uint16 nMoves; /* number of tuples moved from source page */
bool newPage; /* init dest page? */
bool replaceDead; /* are we replacing a DEAD source tuple? */
bool storesNulls; /* pages are in the nulls tree? */
/* where the parent downlink is */
OffsetNumber offnumParent;
uint16 nodeI;
spgxlogState stateSrc;
/*----------
* data follows:
* array of deleted tuple numbers, length nMoves
* array of inserted tuple numbers, length nMoves + 1 or 1
* list of leaf tuples, length nMoves + 1 or 1 (unaligned!)
*
* Note: if replaceDead is true then there is only one inserted tuple
* number and only one leaf tuple in the data, because we are not copying
* the dead tuple from the source
*----------
*/
OffsetNumber offsets[FLEXIBLE_ARRAY_MEMBER];
} spgxlogMoveLeafs;
#define SizeOfSpgxlogMoveLeafs offsetof(spgxlogMoveLeafs, offsets)
/*
* Backup Blk 0: original page
* Backup Blk 1: where new tuple goes, if not same place
* Backup Blk 2: where parent downlink is, if updated and different from
* the old and new
*/
typedef struct spgxlogAddNode
{
/*
* Offset of the original inner tuple, in the original page (on backup
* block 0).
*/
OffsetNumber offnum;
/*
* Offset of the new tuple, on the new page (on backup block 1). Invalid,
* if we overwrote the old tuple in the original page).
*/
OffsetNumber offnumNew;
bool newPage; /* init new page? */
/*----
* Where is the parent downlink? parentBlk indicates which page it's on,
* and offnumParent is the offset within the page. The possible values for
* parentBlk are:
*
* 0: parent == original page
* 1: parent == new page
* 2: parent == different page (blk ref 2)
* -1: parent not updated
*----
*/
int8 parentBlk;
OffsetNumber offnumParent; /* offset within the parent page */
uint16 nodeI;
spgxlogState stateSrc;
/*
* updated inner tuple follows (unaligned!)
*/
} spgxlogAddNode;
/*
* Backup Blk 0: where the prefix tuple goes
* Backup Blk 1: where the postfix tuple goes (if different page)
*/
typedef struct spgxlogSplitTuple
{
/* where the prefix tuple goes */
OffsetNumber offnumPrefix;
/* where the postfix tuple goes */
OffsetNumber offnumPostfix;
bool newPage; /* need to init that page? */
bool postfixBlkSame; /* was postfix tuple put on same page as
* prefix? */
/*
* new prefix inner tuple follows, then new postfix inner tuple (both are
* unaligned!)
*/
} spgxlogSplitTuple;
/*
* Buffer references in the rdata array are:
* Backup Blk 0: Src page (only if not root)
* Backup Blk 1: Dest page (if used)
* Backup Blk 2: Inner page
* Backup Blk 3: Parent page (if any, and different from Inner)
*/
typedef struct spgxlogPickSplit
{
bool isRootSplit;
uint16 nDelete; /* n to delete from Src */
uint16 nInsert; /* n to insert on Src and/or Dest */
bool initSrc; /* re-init the Src page? */
bool initDest; /* re-init the Dest page? */
/* where to put new inner tuple */
OffsetNumber offnumInner;
bool initInner; /* re-init the Inner page? */
bool storesNulls; /* pages are in the nulls tree? */
/* where the parent downlink is, if any */
bool innerIsParent; /* is parent the same as inner page? */
OffsetNumber offnumParent;
uint16 nodeI;
spgxlogState stateSrc;
/*----------
* data follows:
* array of deleted tuple numbers, length nDelete
* array of inserted tuple numbers, length nInsert
* array of page selector bytes for inserted tuples, length nInsert
* new inner tuple (unaligned!)
* list of leaf tuples, length nInsert (unaligned!)
*----------
*/
OffsetNumber offsets[FLEXIBLE_ARRAY_MEMBER];
} spgxlogPickSplit;
#define SizeOfSpgxlogPickSplit offsetof(spgxlogPickSplit, offsets)
typedef struct spgxlogVacuumLeaf
{
uint16 nDead; /* number of tuples to become DEAD */
uint16 nPlaceholder; /* number of tuples to become PLACEHOLDER */
uint16 nMove; /* number of tuples to move */
uint16 nChain; /* number of tuples to re-chain */
spgxlogState stateSrc;
/*----------
* data follows:
* tuple numbers to become DEAD
* tuple numbers to become PLACEHOLDER
* tuple numbers to move from (and replace with PLACEHOLDER)
* tuple numbers to move to (replacing what is there)
* tuple numbers to update nextOffset links of
* tuple numbers to insert in nextOffset links
*----------
*/
OffsetNumber offsets[FLEXIBLE_ARRAY_MEMBER];
} spgxlogVacuumLeaf;
#define SizeOfSpgxlogVacuumLeaf offsetof(spgxlogVacuumLeaf, offsets)
typedef struct spgxlogVacuumRoot
{
/* vacuum a root page when it is also a leaf */
uint16 nDelete; /* number of tuples to delete */
spgxlogState stateSrc;
/* offsets of tuples to delete follow */
OffsetNumber offsets[FLEXIBLE_ARRAY_MEMBER];
} spgxlogVacuumRoot;
#define SizeOfSpgxlogVacuumRoot offsetof(spgxlogVacuumRoot, offsets)
typedef struct spgxlogVacuumRedirect
{
uint16 nToPlaceholder; /* number of redirects to make placeholders */
OffsetNumber firstPlaceholder; /* first placeholder tuple to remove */
TransactionId newestRedirectXid; /* newest XID of removed redirects */
/* offsets of redirect tuples to make placeholders follow */
OffsetNumber offsets[FLEXIBLE_ARRAY_MEMBER];
} spgxlogVacuumRedirect;
#define SizeOfSpgxlogVacuumRedirect offsetof(spgxlogVacuumRedirect, offsets)
extern void spg_redo(XLogReaderState *record);
extern void spg_desc(StringInfo buf, XLogReaderState *record);
extern const char *spg_identify(uint8 info);
extern void spg_xlog_startup(void);
extern void spg_xlog_cleanup(void);
extern void spg_mask(char *pagedata, BlockNumber blkno);
#endif /* SPGXLOG_H */