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This patch wraps all accesses to t_xmin, t_cmin, t_xmax, and t_cmax in

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HeapTupleHeaderData in setter and getter macros called
HeapTupleHeaderGetXmin, HeapTupleHeaderSetXmin etc.

It also introduces a "virtual" field xvac by defining
HeapTupleHeaderGetXvac and HeapTupleHeaderSetXvac.  Xvac is used by
VACUUM, in fact it is stored in t_cmin.

Manfred Koizar
This commit is contained in:
Bruce Momjian
2002-06-15 19:54:24 +00:00
parent 7882179994
commit 3c35face41
14 changed files with 312 additions and 246 deletions
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6
src/backend/commands/sequence.c
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@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/commands/sequence.c,v 1.79 2002/05/22 21:40:55 tgl Exp $
* $Header: /cvsroot/pgsql/src/backend/commands/sequence.c,v 1.80 2002/06/15 19:54:23 momjian Exp $
*
*-------------------------------------------------------------------------
*/
@ -249,10 +249,10 @@ DefineSequence(CreateSeqStmt *seq)
itemId = PageGetItemId((Page) page, FirstOffsetNumber);
item = PageGetItem((Page) page, itemId);
((HeapTupleHeader) item)->t_xmin = FrozenTransactionId;
HeapTupleHeaderSetXmin((HeapTupleHeader) item, FrozenTransactionId);
((HeapTupleHeader) item)->t_infomask |= HEAP_XMIN_COMMITTED;
tuple->t_data->t_xmin = FrozenTransactionId;
HeapTupleHeaderSetXmin(tuple->t_data, FrozenTransactionId);
tuple->t_data->t_infomask |= HEAP_XMIN_COMMITTED;
}