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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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12
src/backend/utils/cache/relcache.c vendored
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@ -7,7 +7,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/utils/cache/relcache.c,v 1.51 1998/11/27 19:52:28 vadim Exp $
* $Header: /cvsroot/pgsql/src/backend/utils/cache/relcache.c,v 1.52 1998/12/15 12:46:37 vadim Exp $
*
*-------------------------------------------------------------------------
*/
@ -363,8 +363,6 @@ scan_pg_rel_seq(RelationBuildDescInfo buildinfo)
* ----------------
*/
pg_class_desc = heap_openr(RelationRelationName);
if (!IsInitProcessingMode())
RelationSetLockForRead(pg_class_desc);
pg_class_scan = heap_beginscan(pg_class_desc, 0, SnapshotNow, 1, &key);
pg_class_tuple = heap_getnext(pg_class_scan, 0);
@ -388,8 +386,6 @@ scan_pg_rel_seq(RelationBuildDescInfo buildinfo)
/* all done */
heap_endscan(pg_class_scan);
if (!IsInitProcessingMode())
RelationUnsetLockForRead(pg_class_desc);
heap_close(pg_class_desc);
return return_tuple;
@ -403,7 +399,7 @@ scan_pg_rel_ind(RelationBuildDescInfo buildinfo)
pg_class_desc = heap_openr(RelationRelationName);
if (!IsInitProcessingMode())
RelationSetLockForRead(pg_class_desc);
LockRelation(pg_class_desc, AccessShareLock);
switch (buildinfo.infotype)
{
@ -428,7 +424,7 @@ scan_pg_rel_ind(RelationBuildDescInfo buildinfo)
/* all done */
if (!IsInitProcessingMode())
RelationUnsetLockForRead(pg_class_desc);
UnlockRelation(pg_class_desc, AccessShareLock);
heap_close(pg_class_desc);
return return_tuple;
@ -1126,7 +1122,6 @@ RelationIdCacheGetRelation(Oid relationId)
}
RelationIncrementReferenceCount(rd);
RelationSetLockForDescriptorOpen(rd);
}
@ -1159,7 +1154,6 @@ RelationNameCacheGetRelation(char *relationName)
}
RelationIncrementReferenceCount(rd);
RelationSetLockForDescriptorOpen(rd);
}