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first commit for openGauss server

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lishifu
2020-06-30 17:38:27 +08:00
parent bcb52078d5
commit 815a9771fb
7975 changed files with 9646516 additions and 61 deletions
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src/include/executor/nodeHash.h Executable file
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/* -------------------------------------------------------------------------
*
* nodeHash.h
* prototypes for nodeHash.c
*
*
* Portions Copyright (c) 1996-2012, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* src/include/executor/nodeHash.h
*
* -------------------------------------------------------------------------
*/
#ifndef NODEHASH_H
#define NODEHASH_H
#include "nodes/execnodes.h"
#include "nodes/relation.h"
#define MIN_HASH_BUCKET_SIZE 32768 /* min bucketsize for hash join */
#define BUCKET_OVERHEAD 8
extern HashState* ExecInitHash(Hash* node, EState* estate, int eflags);
extern TupleTableSlot* ExecHash(void);
extern Node* MultiExecHash(HashState* node);
extern void ExecEndHash(HashState* node);
extern void ExecReScanHash(HashState* node);
extern HashJoinTable ExecHashTableCreate(Hash* node, List* hashOperators, bool keepNulls);
extern void ExecHashTableDestroy(HashJoinTable hashtable);
extern void ExecHashTableInsert(HashJoinTable hashtable, TupleTableSlot* slot, uint32 hashvalue, int planid, int dop,
Instrumentation* instrument = NULL);
extern bool ExecHashGetHashValue(HashJoinTable hashtable, ExprContext* econtext, List* hashkeys, bool outer_tuple,
bool keep_nulls, uint32* hashvalue);
extern void ExecHashGetBucketAndBatch(HashJoinTable hashtable, uint32 hashvalue, int* bucketno, int* batchno);
extern bool ExecScanHashBucket(HashJoinState* hjstate, ExprContext* econtext);
extern void ExecPrepHashTableForUnmatched(HashJoinState* hjstate);
extern bool ExecScanHashTableForUnmatched(HashJoinState* hjstate, ExprContext* econtext);
extern void ExecHashTableReset(HashJoinTable hashtable);
extern void ExecHashTableResetMatchFlags(HashJoinTable hashtable);
extern void ExecChooseHashTableSize(double ntuples, int tupwidth, bool useskew, int* numbuckets, int* numbatches,
int* num_skew_mcvs, int4 localWorkMem, bool vectorized = false, OpMemInfo* memInfo = NULL);
extern double ExecChooseHashTableMaxTuples(int tupwidth, bool useskew, bool vectorized, double hash_table_bytes);
extern int ExecHashGetSkewBucket(HashJoinTable hashtable, uint32 hashvalue);
extern void ExecHashTableStats(HashJoinTable hashtable, int planid);
extern int ExecSonicHashGetAtomTypeSize(Oid typeOid, int typeMod, bool isHashKey);
extern int64 ExecSonicHashGetAtomArrayBytes(
double ntuples, int m_arrSize, int m_atomSize, int64 atomTypeSize, bool hasNullFlag);
extern uint8 EstimateBucketTypeSize(int nbuckets);
#endif /* NODEHASH_H */