database/postgres
1
0
Fork 0
mirror of https://github.com/postgres/postgres.git synced 2025-06-13 07:41:39 +03:00
Code Activity

Initial MVCC code.

Browse Source 
New code for locking buffer' context.
This commit is contained in:
Vadim B. Mikheev
1998-12-15 12:47:01 +00:00
parent c5a27161a1
commit 3f7fbf85dc
65 changed files with 1391 additions and 1282 deletions
Download Patch File Download Diff File Expand all files Collapse all files

19
src/backend/access/rtree/rtree.c
View File

@ -7,7 +7,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/access/rtree/Attic/rtree.c,v 1.29 1998/11/27 19:51:41 vadim Exp $
* $Header: /cvsroot/pgsql/src/backend/access/rtree/Attic/rtree.c,v 1.30 1998/12/15 12:45:25 vadim Exp $
*
*-------------------------------------------------------------------------
*/
@ -107,9 +107,6 @@ rtbuild(Relation heap,
initRtstate(&rtState, index);
/* rtrees only know how to do stupid locking now */
RelationSetLockForWrite(index);
pred = predInfo->pred;
oldPred = predInfo->oldPred;
@ -250,7 +247,6 @@ rtbuild(Relation heap,
/* okay, all heap tuples are indexed */
heap_endscan(scan);
RelationUnsetLockForWrite(index);
if (pred != NULL || oldPred != NULL)
{
@ -308,10 +304,14 @@ rtinsert(Relation r, Datum *datum, char *nulls, ItemPointer ht_ctid, Relation he
itup->t_tid = *ht_ctid;
initRtstate(&rtState, r);
/*
* Notes in ExecUtils:ExecOpenIndices()
*
RelationSetLockForWrite(r);
*/
res = rtdoinsert(r, itup, &rtState);
/* XXX two-phase locking -- don't unlock the relation until EOT */
return res;
}
@ -946,8 +946,12 @@ rtdelete(Relation r, ItemPointer tid)
Buffer buf;
Page page;
/* must write-lock on delete */
/*
* Notes in ExecUtils:ExecOpenIndices()
* Also note that only vacuum deletes index tuples now...
*
RelationSetLockForWrite(r);
*/
blkno = ItemPointerGetBlockNumber(tid);
offnum = ItemPointerGetOffsetNumber(tid);
@ -963,7 +967,6 @@ rtdelete(Relation r, ItemPointer tid)
WriteBuffer(buf);
/* XXX -- two-phase locking, don't release the write lock */
return (char *) NULL;
}