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Clean up the messy semantics (not to mention inefficiency) of PageGetTempPage

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by splitting it into three functions with better-defined behaviors.

Zdenek Kotala
This commit is contained in:
Tom Lane
2008-11-03 20:47:49 +00:00
parent f0dae70431
commit b4eae023bb
10 changed files with 60 additions and 55 deletions
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3
src/include/access/gin.h
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@ -4,7 +4,7 @@
*
* Copyright (c) 2006-2008, PostgreSQL Global Development Group
*
* $PostgreSQL: pgsql/src/include/access/gin.h,v 1.25 2008/10/20 13:39:44 teodor Exp $
* $PostgreSQL: pgsql/src/include/access/gin.h,v 1.26 2008/11/03 20:47:49 tgl Exp $
*--------------------------------------------------------------------------
*/
@ -246,7 +246,6 @@ extern int compareAttEntries(GinState *ginstate, OffsetNumber attnum_a, Datum a,
extern Datum *extractEntriesS(GinState *ginstate, OffsetNumber attnum, Datum value,
int32 *nentries, bool *needUnique);
extern Datum *extractEntriesSU(GinState *ginstate, OffsetNumber attnum, Datum value, int32 *nentries);
extern Page GinPageGetCopyPage(Page page);
extern Datum gin_index_getattr(GinState *ginstate, IndexTuple tuple);
extern OffsetNumber gintuple_get_attrnum(GinState *ginstate, IndexTuple tuple);

6
src/include/storage/bufpage.h
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@ -7,7 +7,7 @@
* Portions Copyright (c) 1996-2008, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* $PostgreSQL: pgsql/src/include/storage/bufpage.h,v 1.83 2008/07/14 03:22:32 tgl Exp $
* $PostgreSQL: pgsql/src/include/storage/bufpage.h,v 1.84 2008/11/03 20:47:49 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -362,7 +362,9 @@ extern void PageInit(Page page, Size pageSize, Size specialSize);
extern bool PageHeaderIsValid(PageHeader page);
extern OffsetNumber PageAddItem(Page page, Item item, Size size,
OffsetNumber offsetNumber, bool overwrite, bool is_heap);
extern Page PageGetTempPage(Page page, Size specialSize);
extern Page PageGetTempPage(Page page);
extern Page PageGetTempPageCopy(Page page);
extern Page PageGetTempPageCopySpecial(Page page);
extern void PageRestoreTempPage(Page tempPage, Page oldPage);
extern void PageRepairFragmentation(Page page);
extern Size PageGetFreeSpace(Page page);