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| author | Tom Lane <tgl@sss.pgh.pa.us> | 2007-09-12 22:10:26 +0000 |
|---|---|---|
| committer | Tom Lane <tgl@sss.pgh.pa.us> | 2007-09-12 22:10:26 +0000 |
| commit | 6889303531187f7867a5dfad5f5b5ba103f7cdd6 (patch) | |
| tree | ea862682de0eb2dad6cba22fb7d0978d70fd54b2 /src/backend/executor/nodeBitmapHeapscan.c | |
| parent | eb0a7735ba1ede6a35b80d73f6c371a8b1220552 (diff) | |
| download | postgresql-6889303531187f7867a5dfad5f5b5ba103f7cdd6.tar.gz postgresql-6889303531187f7867a5dfad5f5b5ba103f7cdd6.zip | |
Redefine the lp_flags field of item pointers as having four states, rather
than two independent bits (one of which was never used in heap pages anyway,
or at least hadn't been in a very long time). This gives us flexibility to
add the HOT notions of redirected and dead item pointers without requiring
anything so klugy as magic values of lp_off and lp_len. The state values
are chosen so that for the states currently in use (pre-HOT) there is no
change in the physical representation.
Diffstat (limited to 'src/backend/executor/nodeBitmapHeapscan.c')
| -rw-r--r-- | src/backend/executor/nodeBitmapHeapscan.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/src/backend/executor/nodeBitmapHeapscan.c b/src/backend/executor/nodeBitmapHeapscan.c index c2ae755e014..f1e30aeb8f0 100644 --- a/src/backend/executor/nodeBitmapHeapscan.c +++ b/src/backend/executor/nodeBitmapHeapscan.c @@ -21,7 +21,7 @@ * * * IDENTIFICATION - * $PostgreSQL: pgsql/src/backend/executor/nodeBitmapHeapscan.c,v 1.18 2007/06/09 18:49:55 tgl Exp $ + * $PostgreSQL: pgsql/src/backend/executor/nodeBitmapHeapscan.c,v 1.19 2007/09/12 22:10:26 tgl Exp $ * *------------------------------------------------------------------------- */ @@ -183,7 +183,7 @@ BitmapHeapNext(BitmapHeapScanState *node) targoffset = scan->rs_vistuples[scan->rs_cindex]; dp = (Page) BufferGetPage(scan->rs_cbuf); lp = PageGetItemId(dp, targoffset); - Assert(ItemIdIsUsed(lp)); + Assert(ItemIdIsNormal(lp)); scan->rs_ctup.t_data = (HeapTupleHeader) PageGetItem((Page) dp, lp); scan->rs_ctup.t_len = ItemIdGetLength(lp); @@ -317,7 +317,7 @@ bitgetpage(HeapScanDesc scan, TBMIterateResult *tbmres) /* * Must check for deleted tuple. */ - if (!ItemIdIsUsed(lp)) + if (!ItemIdIsNormal(lp)) continue; /* |