greenplumn nodeSeqscan 源码
greenplumn nodeSeqscan 代码
文件路径：/src/include/executor/nodeSeqscan.h
/*-------------------------------------------------------------------------
*
* nodeSeqscan.h
*
*
*
* Portions Copyright (c) 1996-2019, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* src/include/executor/nodeSeqscan.h
*
*-------------------------------------------------------------------------
*/
#ifndef NODESEQSCAN_H
#define NODESEQSCAN_H
#include "access/parallel.h"
#include "nodes/execnodes.h"
extern SeqScanState *ExecInitSeqScan(SeqScan *node, EState *estate, int eflags);
extern SeqScanState *ExecInitSeqScanForPartition(SeqScan *node, EState *estate,
Relation currentRelation);
extern void ExecEndSeqScan(SeqScanState *node);
extern void ExecReScanSeqScan(SeqScanState *node);
/* parallel scan support */
extern void ExecSeqScanEstimate(SeqScanState *node, ParallelContext *pcxt);
extern void ExecSeqScanInitializeDSM(SeqScanState *node, ParallelContext *pcxt);
extern void ExecSeqScanReInitializeDSM(SeqScanState *node, ParallelContext *pcxt);
extern void ExecSeqScanInitializeWorker(SeqScanState *node,
ParallelWorkerContext *pwcxt);
#endif /* NODESEQSCAN_H */
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