1 files changed, 79 insertions, 0 deletions
diff --git a/src/include/executor/nodeHash.h b/src/include/executor/nodeHash.h
new file mode 100644
index 0000000..2db4e2f
--- /dev/null
+++ b/src/include/executor/nodeHash.h
@@ -0,0 +1,79 @@
+/*-------------------------------------------------------------------------
+ *
+ * nodeHash.h
+ *	  prototypes for nodeHash.c
+ *
+ *
+ * Portions Copyright (c) 1996-2020, 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 "access/parallel.h"
+#include "nodes/execnodes.h"
+
+struct SharedHashJoinBatch;
+
+extern HashState *ExecInitHash(Hash *node, EState *estate, int eflags);
+extern Node *MultiExecHash(HashState *node);
+extern void ExecEndHash(HashState *node);
+extern void ExecReScanHash(HashState *node);
+
+extern HashJoinTable ExecHashTableCreate(HashState *state, List *hashOperators, List *hashCollations,
+										 bool keepNulls);
+extern void ExecParallelHashTableAlloc(HashJoinTable hashtable,
+									   int batchno);
+extern void ExecHashTableDestroy(HashJoinTable hashtable);
+extern void ExecHashTableDetach(HashJoinTable hashtable);
+extern void ExecHashTableDetachBatch(HashJoinTable hashtable);
+extern void ExecParallelHashTableSetCurrentBatch(HashJoinTable hashtable,
+												 int batchno);
+
+extern void ExecHashTableInsert(HashJoinTable hashtable,
+								TupleTableSlot *slot,
+								uint32 hashvalue);
+extern void ExecParallelHashTableInsert(HashJoinTable hashtable,
+										TupleTableSlot *slot,
+										uint32 hashvalue);
+extern void ExecParallelHashTableInsertCurrentBatch(HashJoinTable hashtable,
+													TupleTableSlot *slot,
+													uint32 hashvalue);
+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 bool ExecParallelScanHashBucket(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,
+									bool try_combined_hash_mem,
+									int parallel_workers,
+									size_t *space_allowed,
+									int *numbuckets,
+									int *numbatches,
+									int *num_skew_mcvs);
+extern int	ExecHashGetSkewBucket(HashJoinTable hashtable, uint32 hashvalue);
+extern void ExecHashEstimate(HashState *node, ParallelContext *pcxt);
+extern void ExecHashInitializeDSM(HashState *node, ParallelContext *pcxt);
+extern void ExecHashInitializeWorker(HashState *node, ParallelWorkerContext *pwcxt);
+extern void ExecHashRetrieveInstrumentation(HashState *node);
+extern void ExecShutdownHash(HashState *node);
+extern void ExecHashAccumInstrumentation(HashInstrumentation *instrument,
+										 HashJoinTable hashtable);
+
+#endif							/* NODEHASH_H */