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Code Activity

1. WAL needs in zero-ed content of newly initialized page.

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2. Log record for PageRepaireFragmentation now keeps array
   of !LP_USED offnums to redo cleanup properly.
This commit is contained in:
Vadim B. Mikheev
2000-12-30 15:19:57 +00:00
parent 2783bd50da
commit 3e059b3802
5 changed files with 92 additions and 40 deletions
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23
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 1.33 2000/10/21 15:43:29 vadim Exp $
* $Header: /cvsroot/pgsql/src/backend/storage/page/bufpage.c,v 1.34 2000/12/30 15:19:55 vadim Exp $
*
*-------------------------------------------------------------------------
*/
@@ -48,6 +48,19 @@ PageInit(Page page, Size pageSize, Size specialSize)
p->pd_upper = pageSize - specialSize;
p->pd_special = pageSize - specialSize;
PageSetPageSize(page, pageSize);
p->pd_lsn.xlogid = p->pd_lsn.xrecoff = 0;
p->pd_sui = 0;
}
/*
* WAL needs in zero-ed page data content
*/
void
PageZero(Page page)
{
MemSet((char*)page + ((PageHeader)page)->pd_lower, 0,
((PageHeader)page)->pd_special - ((PageHeader)page)->pd_lower);
}
/* ----------------
@@ -251,8 +264,8 @@ itemidcompare(const void *itemidp1, const void *itemidp2)
* This routine is usable for heap pages only.
*
*/
void
PageRepairFragmentation(Page page)
int
PageRepairFragmentation(Page page, OffsetNumber *unused)
{
int i;
struct itemIdSortData *itemidbase,
@@ -272,6 +285,8 @@ PageRepairFragmentation(Page page)
(*lp).lp_flags &= ~(LP_USED | LP_DELETE);
if ((*lp).lp_flags & LP_USED)
nused++;
else if (unused)
unused[i - nused] = (OffsetNumber)i;
}
if (nused == 0)
@@ -328,6 +343,8 @@ PageRepairFragmentation(Page page)
pfree(itemidbase);
}
return(nline - nused);
}
/*