greenplumn nodeIndexonlyscan 源码
greenplumn nodeIndexonlyscan 代码
文件路径：/src/include/executor/nodeIndexonlyscan.h
/*-------------------------------------------------------------------------
*
* nodeIndexonlyscan.h
*
*
*
* Portions Copyright (c) 1996-2019, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* src/include/executor/nodeIndexonlyscan.h
*
*-------------------------------------------------------------------------
*/
#ifndef NODEINDEXONLYSCAN_H
#define NODEINDEXONLYSCAN_H
#include "nodes/execnodes.h"
#include "access/parallel.h"
extern IndexOnlyScanState *ExecInitIndexOnlyScan(IndexOnlyScan *node, EState *estate, int eflags);
extern void ExecEndIndexOnlyScan(IndexOnlyScanState *node);
extern void ExecIndexOnlyMarkPos(IndexOnlyScanState *node);
extern void ExecIndexOnlyRestrPos(IndexOnlyScanState *node);
extern void ExecReScanIndexOnlyScan(IndexOnlyScanState *node);
/* Support functions for parallel index-only scans */
extern void ExecIndexOnlyScanEstimate(IndexOnlyScanState *node,
ParallelContext *pcxt);
extern void ExecIndexOnlyScanInitializeDSM(IndexOnlyScanState *node,
ParallelContext *pcxt);
extern void ExecIndexOnlyScanReInitializeDSM(IndexOnlyScanState *node,
ParallelContext *pcxt);
extern void ExecIndexOnlyScanInitializeWorker(IndexOnlyScanState *node,
ParallelWorkerContext *pwcxt);
#endif /* NODEINDEXONLYSCAN_H */
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