diff options
Diffstat (limited to 'src/backend/storage/page/bufpage.c')
| -rw-r--r-- | src/backend/storage/page/bufpage.c | 35 |
1 files changed, 33 insertions, 2 deletions
diff --git a/src/backend/storage/page/bufpage.c b/src/backend/storage/page/bufpage.c index dd1b44d334c..6f043bf9449 100644 --- a/src/backend/storage/page/bufpage.c +++ b/src/backend/storage/page/bufpage.c @@ -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++; } @@ -344,6 +350,31 @@ PageGetFreeSpace(Page page) } /* + * 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 *---------------------------------------------------------------- |