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Commitbdadc9b

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committed
Remove RelationGetBufferWithBuffer(), which is horribly confused about
appropriate pin-count manipulation, and instead use ReleaseAndReadBuffer.Make use of the fact that the passed-in buffer (if there is one) mustbe pinned to avoid grabbing the bufmgr spinlock when we are able toreturn this same buffer. Eliminate unnecessary 'previous tuple' and'next tuple' fields of HeapScanDesc and IndexScanDesc, thereby removinga whole lot of bookkeeping from heap_getnext() and related routines.
1 parent3247989 commitbdadc9b

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9 files changed

+138
-551
lines changed

9 files changed

+138
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lines changed

‎src/backend/access/gist/gistscan.c

Lines changed: 1 addition & 6 deletions
Original file line numberDiff line numberDiff line change
@@ -8,7 +8,7 @@
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* Portions Copyright (c) 1994, Regents of the University of California
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*
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* IDENTIFICATION
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* $Header: /cvsroot/pgsql/src/backend/access/gist/gistscan.c,v 1.35 2001/05/31 18:16:54 tgl Exp $
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* $Header: /cvsroot/pgsql/src/backend/access/gist/gistscan.c,v 1.36 2001/06/09 18:16:55 tgl Exp $
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*
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*-------------------------------------------------------------------------
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*/
@@ -83,13 +83,8 @@ gistrescan(PG_FUNCTION_ARGS)
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/*
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* Clear all the pointers.
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*/
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ItemPointerSetInvalid(&s->previousItemData);
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ItemPointerSetInvalid(&s->currentItemData);
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ItemPointerSetInvalid(&s->nextItemData);
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ItemPointerSetInvalid(&s->previousMarkData);
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ItemPointerSetInvalid(&s->currentMarkData);
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ItemPointerSetInvalid(&s->nextMarkData);
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/*
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* Set flags.

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