greenplumn nodeCustom 源码
greenplumn nodeCustom 代码
文件路径：/src/include/executor/nodeCustom.h
/* ------------------------------------------------------------------------
*
* nodeCustom.h
*
* prototypes for CustomScan nodes
*
* Portions Copyright (c) 1996-2019, 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"
/*
* General executor code
*/
extern CustomScanState *ExecInitCustomScan(CustomScan *cscan,
EState *estate, int eflags);
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 ExecCustomScanReInitializeDSM(CustomScanState *node,
ParallelContext *pcxt);
extern void ExecCustomScanInitializeWorker(CustomScanState *node,
ParallelWorkerContext *pwcxt);
extern void ExecShutdownCustomScan(CustomScanState *node);
#endif /* NODECUSTOM_H */
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