80 lines
3.1 KiB
C
80 lines
3.1 KiB
C
/*-------------------------------------------------------------------------
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*
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* nodeHash.h
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* prototypes for nodeHash.c
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*
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*
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* Portions Copyright (c) 1996-2019, PostgreSQL Global Development Group
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* Portions Copyright (c) 1994, Regents of the University of California
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*
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* src/include/executor/nodeHash.h
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*
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*-------------------------------------------------------------------------
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*/
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#ifndef NODEHASH_H
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#define NODEHASH_H
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#include "access/parallel.h"
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#include "nodes/execnodes.h"
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struct SharedHashJoinBatch;
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extern HashState *ExecInitHash(Hash *node, EState *estate, int eflags);
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extern Node *MultiExecHash(HashState *node);
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extern void ExecEndHash(HashState *node);
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extern void ExecReScanHash(HashState *node);
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extern HashJoinTable ExecHashTableCreate(HashState *state, List *hashOperators, List *hashCollations,
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bool keepNulls);
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extern void ExecParallelHashTableAlloc(HashJoinTable hashtable,
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int batchno);
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extern void ExecHashTableDestroy(HashJoinTable hashtable);
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extern void ExecHashTableDetach(HashJoinTable hashtable);
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extern void ExecHashTableDetachBatch(HashJoinTable hashtable);
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extern void ExecParallelHashTableSetCurrentBatch(HashJoinTable hashtable,
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int batchno);
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extern void ExecHashTableInsert(HashJoinTable hashtable,
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TupleTableSlot *slot,
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uint32 hashvalue);
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extern void ExecParallelHashTableInsert(HashJoinTable hashtable,
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TupleTableSlot *slot,
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uint32 hashvalue);
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extern void ExecParallelHashTableInsertCurrentBatch(HashJoinTable hashtable,
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TupleTableSlot *slot,
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uint32 hashvalue);
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extern bool ExecHashGetHashValue(HashJoinTable hashtable,
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ExprContext *econtext,
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List *hashkeys,
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bool outer_tuple,
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bool keep_nulls,
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uint32 *hashvalue);
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extern void ExecHashGetBucketAndBatch(HashJoinTable hashtable,
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uint32 hashvalue,
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int *bucketno,
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int *batchno);
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extern bool ExecScanHashBucket(HashJoinState *hjstate, ExprContext *econtext);
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extern bool ExecParallelScanHashBucket(HashJoinState *hjstate, ExprContext *econtext);
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extern void ExecPrepHashTableForUnmatched(HashJoinState *hjstate);
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extern bool ExecScanHashTableForUnmatched(HashJoinState *hjstate,
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ExprContext *econtext);
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extern void ExecHashTableReset(HashJoinTable hashtable);
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extern void ExecHashTableResetMatchFlags(HashJoinTable hashtable);
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extern void ExecChooseHashTableSize(double ntuples, int tupwidth, bool useskew,
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bool try_combined_work_mem,
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int parallel_workers,
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size_t *space_allowed,
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int *numbuckets,
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int *numbatches,
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int *num_skew_mcvs);
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extern int ExecHashGetSkewBucket(HashJoinTable hashtable, uint32 hashvalue);
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extern void ExecHashEstimate(HashState *node, ParallelContext *pcxt);
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extern void ExecHashInitializeDSM(HashState *node, ParallelContext *pcxt);
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extern void ExecHashInitializeWorker(HashState *node, ParallelWorkerContext *pwcxt);
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extern void ExecHashRetrieveInstrumentation(HashState *node);
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extern void ExecShutdownHash(HashState *node);
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extern void ExecHashGetInstrumentation(HashInstrumentation *instrument,
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HashJoinTable hashtable);
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#endif /* NODEHASH_H */
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