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Clean up the use of some page-header-access macros: principally, use

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SizeOfPageHeaderData instead of sizeof(PageHeaderData) in places where that
makes the code clearer, and avoid casting between Page and PageHeader where
possible.  Zdenek Kotala, with some additional cleanup by Heikki Linnakangas.

I did not apply the parts of the proposed patch that would have resulted in
slightly changing the on-disk format of hash indexes; it seems to me that's
not a win as long as there's any chance of having in-place upgrade for 8.4.
This commit is contained in:
Tom Lane
2008-07-13 20:45:47 +00:00
parent 45efb09a01
commit 9d035f4254
17 changed files with 96 additions and 104 deletions
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7
src/backend/access/nbtree/nbtpage.c
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@@ -9,7 +9,7 @@
*
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/access/nbtree/nbtpage.c,v 1.109 2008/05/12 00:00:45 alvherre Exp $
* $PostgreSQL: pgsql/src/backend/access/nbtree/nbtpage.c,v 1.110 2008/07/13 20:45:47 tgl Exp $
*
* NOTES
* Postgres btree pages look like ordinary relation pages. The opaque
@@ -436,8 +436,7 @@ _bt_checkpage(Relation rel, Buffer buf)
/*
* Additionally check that the special area looks sane.
*/
if (((PageHeader) (page))->pd_special !=
(BLCKSZ - MAXALIGN(sizeof(BTPageOpaqueData))))
if (PageGetSpecialSize(page) != MAXALIGN(sizeof(BTPageOpaqueData)))
ereport(ERROR,
(errcode(ERRCODE_INDEX_CORRUPTED),
errmsg("index \"%s\" contains corrupted page at block %u",
@@ -555,7 +554,7 @@ _bt_getbuf(Relation rel, BlockNumber blkno, int access)
/* Initialize the new page before returning it */
page = BufferGetPage(buf);
Assert(PageIsNew((PageHeader) page));
Assert(PageIsNew(page));
_bt_pageinit(page, BufferGetPageSize(buf));
}