diff options
Diffstat (limited to 'src/include/access/gist.h')
| -rw-r--r-- | src/include/access/gist.h | 25 |
1 files changed, 16 insertions, 9 deletions
diff --git a/src/include/access/gist.h b/src/include/access/gist.h index c3c5493f76..df9f39c7b8 100644 --- a/src/include/access/gist.h +++ b/src/include/access/gist.h @@ -6,10 +6,10 @@ * changes should be made with care. * * - * Portions Copyright (c) 1996-2010, PostgreSQL Global Development Group + * Portions Copyright (c) 1996-2011, PostgreSQL Global Development Group * Portions Copyright (c) 1994, Regents of the University of California * - * $PostgreSQL: pgsql/src/include/access/gist.h,v 1.63 2010/01/02 16:58:00 momjian Exp $ + * src/include/access/gist.h * *------------------------------------------------------------------------- */ @@ -32,7 +32,8 @@ #define GIST_PENALTY_PROC 5 #define GIST_PICKSPLIT_PROC 6 #define GIST_EQUAL_PROC 7 -#define GISTNProcs 7 +#define GIST_DISTANCE_PROC 8 +#define GISTNProcs 8 /* * strategy numbers for GiST opclasses that want to implement the old @@ -52,13 +53,15 @@ #define RTOverAboveStrategyNumber 12 #define RTOldContainsStrategyNumber 13 /* for old spelling of @> */ #define RTOldContainedByStrategyNumber 14 /* for old spelling of <@ */ +#define RTKNNSearchStrategyNumber 15 /* * Page opaque data in a GiST index page. */ -#define F_LEAF (1 << 0) -#define F_DELETED (1 << 1) -#define F_TUPLES_DELETED (1 << 2) +#define F_LEAF (1 << 0) /* leaf page */ +#define F_DELETED (1 << 1) /* the page has been deleted */ +#define F_TUPLES_DELETED (1 << 2) /* some tuples on the page are dead */ +#define F_FOLLOW_RIGHT (1 << 3) /* page to the right has no downlink */ typedef XLogRecPtr GistNSN; @@ -130,14 +133,18 @@ typedef struct GISTENTRY #define GistMarkTuplesDeleted(page) ( GistPageGetOpaque(page)->flags |= F_TUPLES_DELETED) #define GistClearTuplesDeleted(page) ( GistPageGetOpaque(page)->flags &= ~F_TUPLES_DELETED) +#define GistFollowRight(page) ( GistPageGetOpaque(page)->flags & F_FOLLOW_RIGHT) +#define GistMarkFollowRight(page) ( GistPageGetOpaque(page)->flags |= F_FOLLOW_RIGHT) +#define GistClearFollowRight(page) ( GistPageGetOpaque(page)->flags &= ~F_FOLLOW_RIGHT) + /* - * Vector of GISTENTRY structs; user-defined methods union and pick - * split takes it as one of their arguments + * Vector of GISTENTRY structs; user-defined methods union and picksplit + * take it as one of their arguments */ typedef struct { int32 n; /* number of elements */ - GISTENTRY vector[1]; + GISTENTRY vector[1]; /* variable-length array */ } GistEntryVector; #define GEVHDRSZ (offsetof(GistEntryVector, vector)) |