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Invent ResourceOwner mechanism as per my recent proposal, and use it to

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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.
This commit is contained in:
Tom Lane
2004-07-17 03:32:14 +00:00
parent f4c069ca8f
commit fe548629c5
41 changed files with 2086 additions and 1192 deletions
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5
src/include/access/gistscan.h
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@ -7,7 +7,7 @@
* Portions Copyright (c) 1996-2003, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* $PostgreSQL: pgsql/src/include/access/gistscan.h,v 1.23 2004/07/01 00:51:38 tgl Exp $
* $PostgreSQL: pgsql/src/include/access/gistscan.h,v 1.24 2004/07/17 03:30:38 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -22,7 +22,6 @@ extern Datum gistmarkpos(PG_FUNCTION_ARGS);
extern Datum gistrestrpos(PG_FUNCTION_ARGS);
extern Datum gistendscan(PG_FUNCTION_ARGS);
extern void gistadjscans(Relation r, int op, BlockNumber blkno, OffsetNumber offnum);
extern void AtEOXact_gist(void);
extern void AtEOSubXact_gist(TransactionId childXid);
extern void ReleaseResources_gist(void);
#endif /* GISTSCAN_H */