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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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3
src/include/storage/smgr.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/storage/smgr.h,v 1.45 2004/07/01 00:51:43 tgl Exp $
* $PostgreSQL: pgsql/src/include/storage/smgr.h,v 1.46 2004/07/17 03:31:26 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@@ -66,7 +66,6 @@ extern BlockNumber smgrtruncate(SMgrRelation reln, BlockNumber nblocks,
extern void smgrimmedsync(SMgrRelation reln);
extern void smgrDoPendingDeletes(bool isCommit);
extern int smgrGetPendingDeletes(bool forCommit, RelFileNode **ptr);
extern void AtSubStart_smgr(void);
extern void AtSubCommit_smgr(void);
extern void AtSubAbort_smgr(void);
extern void smgrcommit(void);