diff options
Diffstat (limited to 'src/include/access/gin.h')
| -rw-r--r-- | src/include/access/gin.h | 17 |
1 files changed, 11 insertions, 6 deletions
diff --git a/src/include/access/gin.h b/src/include/access/gin.h index f0f45bc5e8a..c591c53638c 100644 --- a/src/include/access/gin.h +++ b/src/include/access/gin.h @@ -4,7 +4,7 @@ * * Copyright (c) 2006-2009, PostgreSQL Global Development Group * - * $PostgreSQL: pgsql/src/include/access/gin.h,v 1.29 2009/03/24 20:17:14 tgl Exp $ + * $PostgreSQL: pgsql/src/include/access/gin.h,v 1.30 2009/03/24 22:06:03 tgl Exp $ *-------------------------------------------------------------------------- */ #ifndef GIN_H @@ -27,6 +27,14 @@ #define GINNProcs 5 /* + * Max depth allowed in search tree during bulk inserts. This is to keep from + * degenerating to O(N^2) behavior when the tree is unbalanced due to sorted + * or nearly-sorted input. (Perhaps it would be better to use a balanced-tree + * algorithm, but in common cases that would only add useless overhead.) + */ +#define GIN_MAX_TREE_DEPTH 100 + +/* * Page opaque data in a inverted index page. * * Note: GIN does not include a page ID word as do the other index types. @@ -434,12 +442,9 @@ extern IndexTuple ginPageGetLinkItup(Buffer buf); /* gindatapage.c */ extern int compareItemPointers(ItemPointer a, ItemPointer b); -extern void -MergeItemPointers( - ItemPointerData *dst, +extern void MergeItemPointers(ItemPointerData *dst, ItemPointerData *a, uint32 na, - ItemPointerData *b, uint32 nb -); + ItemPointerData *b, uint32 nb); extern void GinDataPageAddItem(Page page, void *data, OffsetNumber offset); extern void PageDeletePostingItem(Page page, OffsetNumber offset); |