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Initial MVCC code.

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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
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22
src/backend/catalog/index.c
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@@ -7,7 +7,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/catalog/index.c,v 1.65 1998/12/13 04:37:50 momjian Exp $
* $Header: /cvsroot/pgsql/src/backend/catalog/index.c,v 1.66 1998/12/15 12:45:43 vadim Exp $
*
*
* INTERFACE ROUTINES
@@ -913,7 +913,7 @@ UpdateIndexPredicate(Oid indexoid, Node *oldPred, Node *predicate)
newtup = heap_modifytuple(tuple, pg_index, values, nulls, replace);
heap_replace(pg_index, &newtup->t_self, newtup);
heap_replace(pg_index, &newtup->t_self, newtup, NULL);
pfree(newtup);
heap_close(pg_index);
@@ -1039,15 +1039,11 @@ index_create(char *heapRelationName,
heapRelation = heap_open(heapoid);
/* ----------------
* write lock heap to guarantee exclusive access
* ----------------
RelationSetLockForWrite(heapRelation);
* ^^^^^
* Does it have any sense ? - vadim 10/27/97
/*
* Only SELECT ... FOR UPDATE are allowed
*/
RelationSetLockForRead(heapRelation);
LockRelation(heapRelation, ShareLock);
/* ----------------
* construct new tuple descriptor
@@ -1195,7 +1191,7 @@ index_destroy(Oid indexId)
AssertState(HeapTupleIsValid(tuple));
heap_delete(relationRelation, &tuple->t_self);
heap_delete(relationRelation, &tuple->t_self, NULL);
pfree(tuple);
heap_close(relationRelation);
@@ -1212,7 +1208,7 @@ index_destroy(Oid indexId)
Int16GetDatum(attnum),
0, 0)))
{
heap_delete(attributeRelation, &tuple->t_self);
heap_delete(attributeRelation, &tuple->t_self, NULL);
pfree(tuple);
attnum++;
}
@@ -1232,7 +1228,7 @@ index_destroy(Oid indexId)
indexRelation = heap_openr(IndexRelationName);
heap_delete(indexRelation, &tuple->t_self);
heap_delete(indexRelation, &tuple->t_self, NULL);
pfree(tuple);
heap_close(indexRelation);
@@ -1424,7 +1420,7 @@ UpdateStats(Oid relid, long reltuples, bool hasindex)
values[Anum_pg_class_relhasindex - 1] = CharGetDatum(hasindex);
newtup = heap_modifytuple(tuple, pg_class, values, nulls, replace);
heap_replace(pg_class, &tuple->t_self, newtup);
heap_replace(pg_class, &tuple->t_self, newtup, NULL);
CatalogOpenIndices(Num_pg_class_indices, Name_pg_class_indices, idescs);
CatalogIndexInsert(idescs, Num_pg_class_indices, pg_class, newtup);
CatalogCloseIndices(Num_pg_class_indices, idescs);