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Code Activity

1. Vacuum is updated for MVCC.

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2. Much faster btree tuples deletion in the case when first on page
   index tuple is deleted (no movement to the left page(s)).
3. Remember blkno of new root page in BTPageOpaque of
   left/right siblings when root page is splitted.
This commit is contained in:
Vadim B. Mikheev
1999-03-28 20:32:42 +00:00
parent d4ed17842a
commit fdf6be80f9
16 changed files with 802 additions and 352 deletions
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7
src/include/access/htup.h
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@@ -6,7 +6,7 @@
*
* Copyright (c) 1994, Regents of the University of California
*
* $Id: htup.h,v 1.13 1999/02/13 23:20:54 momjian Exp $
* $Id: htup.h,v 1.14 1999/03/28 20:32:30 vadim Exp $
*
*-------------------------------------------------------------------------
*/
@@ -117,8 +117,11 @@ typedef HeapTupleData *HeapTuple;
#define HEAP_XMAX_COMMITTED 0x0400 /* t_xmax committed */
#define HEAP_XMAX_INVALID 0x0800 /* t_xmax invalid/aborted */
#define HEAP_MARKED_FOR_UPDATE 0x1000 /* marked for UPDATE */
#define HEAP_UPDATED 0x2000 /* this is UPDATEd version of row */
#define HEAP_MOVED_OFF 0x4000 /* removed or moved to another place by vacuum */
#define HEAP_MOVED_IN 0x8000 /* moved from another place by vacuum */
#define HEAP_XACT_MASK 0x0F00 /* */
#define HEAP_XACT_MASK 0xFF00 /* */
#define HeapTupleNoNulls(tuple) \
(!(((HeapTuple) (tuple))->t_data->t_infomask & HEAP_HASNULL))