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Invent ResourceOwner mechanism as per my recent proposal, and use it to
keep track of portal-related resources separately from transaction-related resources. This allows cursors to work in a somewhat sane fashion with nested transactions. For now, cursor behavior is non-subtransactional, that is a cursor's state does not roll back if you abort a subtransaction that fetched from the cursor. We might want to change that later.
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@@ -7,7 +7,7 @@
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* Portions Copyright (c) 1996-2003, PostgreSQL Global Development Group
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* Portions Copyright (c) 1994, Regents of the University of California
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*
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* $PostgreSQL: pgsql/src/include/access/rtree.h,v 1.33 2004/07/01 00:51:38 tgl Exp $
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* $PostgreSQL: pgsql/src/include/access/rtree.h,v 1.34 2004/07/17 03:30:38 tgl Exp $
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*
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*-------------------------------------------------------------------------
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*/
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@@ -129,8 +129,7 @@ extern void rtree_desc(char *buf, uint8 xl_info, char *rec);
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/* rtscan.c */
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extern void rtadjscans(Relation r, int op, BlockNumber blkno,
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OffsetNumber offnum);
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extern void AtEOXact_rtree(void);
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extern void AtEOSubXact_rtree(TransactionId childXid);
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extern void ReleaseResources_rtree(void);
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/* rtstrat.c */
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extern StrategyNumber RTMapToInternalOperator(StrategyNumber strat);
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