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Current File : //proc/3/task/3/root/hosting/proc/self/root/usr/pgsql-9.6/include/server/executor/nodeCustom.h
/* ------------------------------------------------------------------------
 *
 * nodeCustom.h
 *
 * prototypes for CustomScan nodes
 *
 * Portions Copyright (c) 1996-2016, PostgreSQL Global Development Group
 * Portions Copyright (c) 1994, Regents of the University of California
 *
 * ------------------------------------------------------------------------
 */
#ifndef NODECUSTOM_H
#define NODECUSTOM_H

#include "access/parallel.h"
#include "nodes/execnodes.h"
#include "nodes/extensible.h"

/*
 * General executor code
 */
extern CustomScanState *ExecInitCustomScan(CustomScan *custom_scan,
				   EState *estate, int eflags);
extern TupleTableSlot *ExecCustomScan(CustomScanState *node);
extern void ExecEndCustomScan(CustomScanState *node);

extern void ExecReScanCustomScan(CustomScanState *node);
extern void ExecCustomMarkPos(CustomScanState *node);
extern void ExecCustomRestrPos(CustomScanState *node);

/*
 * Parallel execution support
 */
extern void ExecCustomScanEstimate(CustomScanState *node,
					   ParallelContext *pcxt);
extern void ExecCustomScanInitializeDSM(CustomScanState *node,
							ParallelContext *pcxt);
extern void ExecCustomScanInitializeWorker(CustomScanState *node,
							   shm_toc *toc);

#endif   /* NODECUSTOM_H */

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