greenplumn nodeSort 源码
greenplumn nodeSort 代码
文件路径：/src/include/executor/nodeSort.h
/*-------------------------------------------------------------------------
*
* nodeSort.h
*
*
*
* Portions Copyright (c) 1996-2019, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* src/include/executor/nodeSort.h
*
*-------------------------------------------------------------------------
*/
#ifndef NODESORT_H
#define NODESORT_H
#include "access/parallel.h"
#include "nodes/execnodes.h"
extern SortState *ExecInitSort(Sort *node, EState *estate, int eflags);
extern void ExecEndSort(SortState *node);
extern void ExecSortMarkPos(SortState *node);
extern void ExecSortRestrPos(SortState *node);
extern void ExecReScanSort(SortState *node);
extern void ExecSquelchSort(SortState *node);
/* parallel instrumentation support */
extern void ExecSortEstimate(SortState *node, ParallelContext *pcxt);
extern void ExecSortInitializeDSM(SortState *node, ParallelContext *pcxt);
extern void ExecSortInitializeWorker(SortState *node, ParallelWorkerContext *pwcxt);
extern void ExecSortRetrieveInstrumentation(SortState *node);
#endif /* NODESORT_H */
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