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f9143d102f
Per discussion, the new extensible node framework is thought to be better designed than the custom path/scan/scanstate stuff we added in PostgreSQL 9.5. Rework the latter to be more like the former. This is not backward-compatible, but we generally don't promise that for C APIs, and there probably aren't many people using this yet anyway. KaiGai Kohei, reviewed by Petr Jelinek and me. Some further cosmetic changes by me.
41 lines
1.2 KiB
C
41 lines
1.2 KiB
C
/* ------------------------------------------------------------------------
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*
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* nodeCustom.h
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*
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* prototypes for CustomScan nodes
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*
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* Portions Copyright (c) 1996-2016, 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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* ------------------------------------------------------------------------
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*/
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#ifndef NODECUSTOM_H
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#define NODECUSTOM_H
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#include "access/parallel.h"
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#include "nodes/execnodes.h"
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#include "nodes/extensible.h"
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/*
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* General executor code
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*/
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extern CustomScanState *ExecInitCustomScan(CustomScan *custom_scan,
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EState *estate, int eflags);
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extern TupleTableSlot *ExecCustomScan(CustomScanState *node);
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extern void ExecEndCustomScan(CustomScanState *node);
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extern void ExecReScanCustomScan(CustomScanState *node);
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extern void ExecCustomMarkPos(CustomScanState *node);
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extern void ExecCustomRestrPos(CustomScanState *node);
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/*
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* Parallel execution support
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*/
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extern void ExecCustomScanEstimate(CustomScanState *node,
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ParallelContext *pcxt);
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extern void ExecCustomScanInitializeDSM(CustomScanState *node,
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ParallelContext *pcxt);
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extern void ExecCustomScanInitializeWorker(CustomScanState *node,
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shm_toc *toc);
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#endif /* NODECUSTOM_H */
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