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WAL

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This commit is contained in:
Vadim B. Mikheev
2000-10-21 15:43:36 +00:00
parent 7c177a4908
commit a7fcadd10a
21 changed files with 1167 additions and 682 deletions
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35
src/backend/storage/page/bufpage.c
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@@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/storage/page/bufpage.c,v 1.32 2000/10/20 11:28:39 vadim Exp $
* $Header: /cvsroot/pgsql/src/backend/storage/page/bufpage.c,v 1.33 2000/10/21 15:43:29 vadim Exp $
*
*-------------------------------------------------------------------------
*/
@@ -245,7 +245,11 @@ itemidcompare(const void *itemidp1, const void *itemidp2)
/*
* PageRepairFragmentation
* Frees fragmented space on a page.
*
* Frees fragmented space on a page.
* It doesn't remove unused line pointers! Please don't change this.
* This routine is usable for heap pages only.
*
*/
void
PageRepairFragmentation(Page page)
@@ -264,6 +268,8 @@ PageRepairFragmentation(Page page)
for (i = 0; i < nline; i++)
{
lp = ((PageHeader) page)->pd_linp + i;
if ((*lp).lp_flags & LP_DELETE) /* marked for deletion */
(*lp).lp_flags &= ~(LP_USED | LP_DELETE);
if ((*lp).lp_flags & LP_USED)
nused++;
}
@@ -343,6 +349,31 @@ PageGetFreeSpace(Page page)
return space;
}
/*
* PageRepairFragmentation un-useful for index page cleanup because
* of it doesn't remove line pointers. This routine could be more
* effective but ... no time -:)
*/
void
IndexPageCleanup(Buffer buffer)
{
Page page = (Page) BufferGetPage(buffer);
ItemId lp;
OffsetNumber maxoff;
OffsetNumber i;
maxoff = PageGetMaxOffsetNumber(page);
for (i = 0; i < maxoff; i++)
{
lp = ((PageHeader) page)->pd_linp + i;
if ((*lp).lp_flags & LP_DELETE) /* marked for deletion */
{
PageIndexTupleDelete(page, i + 1);
maxoff--;
}
}
}
/*
*----------------------------------------------------------------
* PageIndexTupleDelete