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2c0ef9777c
bits indicating which optional capabilities can actually be exercised at runtime. This will allow Sort and Material nodes, and perhaps later other nodes, to avoid unnecessary overhead in common cases. This commit just adds the infrastructure and arranges to pass the correct flag values down to plan nodes; none of the actual optimizations are here yet. I'm committing this separately in case anyone wants to measure the added overhead. (It should be negligible.) Simon Riggs and Tom Lane
25 lines
950 B
C
25 lines
950 B
C
/*-------------------------------------------------------------------------
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*
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* nodeBitmapHeapscan.h
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*
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*
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*
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* Portions Copyright (c) 1996-2005, 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/executor/nodeBitmapHeapscan.h,v 1.2 2006/02/28 04:10:28 tgl Exp $
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*
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*-------------------------------------------------------------------------
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*/
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#ifndef NODEBITMAPHEAPSCAN_H
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#define NODEBITMAPHEAPSCAN_H
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#include "nodes/execnodes.h"
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extern int ExecCountSlotsBitmapHeapScan(BitmapHeapScan *node);
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extern BitmapHeapScanState *ExecInitBitmapHeapScan(BitmapHeapScan *node, EState *estate, int eflags);
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extern TupleTableSlot *ExecBitmapHeapScan(BitmapHeapScanState *node);
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extern void ExecEndBitmapHeapScan(BitmapHeapScanState *node);
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extern void ExecBitmapHeapReScan(BitmapHeapScanState *node, ExprContext *exprCtxt);
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#endif /* NODEBITMAPHEAPSCAN_H */
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