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There already was a macro PageGetItemId; this is now used in (almost)

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all places, where pd_linp is accessed.  Also introduce new macros
SizeOfPageHeaderData and BTMaxItemSize. This is just source code
cosmetic, no behaviour changed.

Manfred Koizar
This commit is contained in:
Bruce Momjian
2002-07-02 05:48:44 +00:00
parent 8864603f3c
commit 33f1687879
6 changed files with 58 additions and 42 deletions
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12
src/backend/access/nbtree/nbtinsert.c
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@@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/access/nbtree/nbtinsert.c,v 1.93 2002/06/20 20:29:25 momjian Exp $
* $Header: /cvsroot/pgsql/src/backend/access/nbtree/nbtinsert.c,v 1.94 2002/07/02 05:48:44 momjian Exp $
*
*-------------------------------------------------------------------------
*/
@@ -383,10 +383,9 @@ _bt_insertonpg(Relation rel,
* to 1/3 the per-page available space. Note that at this point,
* itemsz doesn't include the ItemId.
*/
if (itemsz > (PageGetPageSize(page) - sizeof(PageHeaderData) - MAXALIGN(sizeof(BTPageOpaqueData))) / 3 - sizeof(ItemIdData))
if (itemsz > BTMaxItemSize(page))
elog(ERROR, "btree: index item size %lu exceeds maximum %lu",
(unsigned long) itemsz,
(PageGetPageSize(page) - sizeof(PageHeaderData) - MAXALIGN(sizeof(BTPageOpaqueData))) / 3 - sizeof(ItemIdData));
(unsigned long) itemsz, BTMaxItemSize(page));
/*
* Determine exactly where new item will go.
@@ -1020,9 +1019,8 @@ _bt_findsplitloc(Relation rel,
/* Total free space available on a btree page, after fixed overhead */
leftspace = rightspace =
PageGetPageSize(page) - sizeof(PageHeaderData) -
MAXALIGN(sizeof(BTPageOpaqueData))
+sizeof(ItemIdData);
PageGetPageSize(page) - SizeOfPageHeaderData -
MAXALIGN(sizeof(BTPageOpaqueData));
/*
* Finding the best possible split would require checking all the