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Oops, in the previous fix to prevent a cursor that's being used in a FOR 

loop from being dropped, I missed subtransaction cleanup. Pinned portals
must be dropped at subtransaction cleanup just as they are at main
transaction cleanup.

Per bug #5556 by Robert Walker. Backpatch to 8.0, 7.4 didn't have
subtransactions.
This commit is contained in:
Heikki Linnakangas 2010-07-13 09:03:11 +00:00
parent b8accd6512
commit b239670173
1 changed files with 12 additions and 1 deletions
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13
src/backend/utils/mmgr/portalmem.c
View File

@ -12,7 +12,7 @@
* Portions Copyright (c) 1994, Regents of the University of California
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/utils/mmgr/portalmem.c,v 1.76.4.3 2010/07/05 09:27:49 heikki Exp $
* $PostgreSQL: pgsql/src/backend/utils/mmgr/portalmem.c,v 1.76.4.4 2010/07/13 09:03:11 heikki Exp $
*
*-------------------------------------------------------------------------
*/
@ -298,6 +298,9 @@ PortalCreateHoldStore(Portal portal)
/*
* PinPortal
* Protect a portal from dropping.
*
* A pinned portal is still unpinned and dropped at transaction or
* subtransaction abort.
*/
void
PinPortal(Portal portal)
@ -764,6 +767,14 @@ AtSubCleanup_Portals(SubTransactionId mySubid)
if (portal->createSubid != mySubid)
continue;
/*
* If a portal is still pinned, forcibly unpin it. PortalDrop will not
* let us drop the portal otherwise. Whoever pinned the portal was
* interrupted by the abort too and won't try to use it anymore.
*/
if (portal->portalPinned)
portal->portalPinned = false;
/* Zap it. */
PortalDrop(portal, false);
}