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Minor code cleanup/beautification in RelationPutHeapTuple.

This commit is contained in:
Tom Lane 2001-07-13 22:52:58 +00:00
parent 379ac0d03a
commit 20ca834ce9
1 changed files with 11 additions and 15 deletions
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26
src/backend/access/heap/hio.c
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@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
* $Id: hio.c,v 1.41 2001/06/29 21:08:23 tgl Exp $
* $Id: hio.c,v 1.42 2001/07/13 22:52:58 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -25,8 +25,7 @@
*
* !!! ELOG(ERROR) IS DISALLOWED HERE !!!
*
* Note - we assume that caller hold BUFFER_LOCK_EXCLUSIVE on the buffer.
*
* Note - caller must hold BUFFER_LOCK_EXCLUSIVE on the buffer.
*/
void
RelationPutHeapTuple(Relation relation,
@ -35,7 +34,6 @@ RelationPutHeapTuple(Relation relation,
{
Page pageHeader;
OffsetNumber offnum;
Size len;
ItemId itemId;
Item item;
@ -45,24 +43,22 @@ RelationPutHeapTuple(Relation relation,
IncrHeapAccessStat(local_RelationPutHeapTuple);
IncrHeapAccessStat(global_RelationPutHeapTuple);
pageHeader = (Page) BufferGetPage(buffer);
len = MAXALIGN(tuple->t_len); /* be conservative */
Assert(len <= PageGetFreeSpace(pageHeader));
/* Add the tuple to the page */
pageHeader = BufferGetPage(buffer);
offnum = PageAddItem((Page) pageHeader, (Item) tuple->t_data,
offnum = PageAddItem(pageHeader, (Item) tuple->t_data,
tuple->t_len, InvalidOffsetNumber, LP_USED);
if (offnum == InvalidOffsetNumber)
elog(STOP, "RelationPutHeapTuple: failed to add tuple");
itemId = PageGetItemId((Page) pageHeader, offnum);
item = PageGetItem((Page) pageHeader, itemId);
/* Update tuple->t_self to the actual position where it was stored */
ItemPointerSet(&(tuple->t_self), BufferGetBlockNumber(buffer), offnum);
ItemPointerSet(&((HeapTupleHeader) item)->t_ctid,
BufferGetBlockNumber(buffer), offnum);
/* return an accurate tuple */
ItemPointerSet(&tuple->t_self, BufferGetBlockNumber(buffer), offnum);
/* Insert the correct position into CTID of the stored tuple, too */
itemId = PageGetItemId(pageHeader, offnum);
item = PageGetItem(pageHeader, itemId);
((HeapTupleHeader) item)->t_ctid = tuple->t_self;
}
/*