1 files changed, 74 insertions, 0 deletions
diff --git a/src/include/utils/index_selfuncs.h b/src/include/utils/index_selfuncs.h
new file mode 100644
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+++ b/src/include/utils/index_selfuncs.h
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+/*-------------------------------------------------------------------------
+ *
+ * index_selfuncs.h
+ *	  Index cost estimation functions for standard index access methods.
+ *
+ *
+ * Note: this is split out of selfuncs.h mainly to avoid importing all of the
+ * planner's data structures into the non-planner parts of the index AMs.
+ * If you make it depend on anything besides access/amapi.h, that's likely
+ * a mistake.
+ *
+ * Portions Copyright (c) 1996-2021, PostgreSQL Global Development Group
+ * Portions Copyright (c) 1994, Regents of the University of California
+ *
+ * src/include/utils/index_selfuncs.h
+ *
+ *-------------------------------------------------------------------------
+ */
+#ifndef INDEX_SELFUNCS_H
+#define INDEX_SELFUNCS_H
+
+#include "access/amapi.h"
+
+/* Functions in selfuncs.c */
+extern void brincostestimate(struct PlannerInfo *root,
+							 struct IndexPath *path,
+							 double loop_count,
+							 Cost *indexStartupCost,
+							 Cost *indexTotalCost,
+							 Selectivity *indexSelectivity,
+							 double *indexCorrelation,
+							 double *indexPages);
+extern void btcostestimate(struct PlannerInfo *root,
+						   struct IndexPath *path,
+						   double loop_count,
+						   Cost *indexStartupCost,
+						   Cost *indexTotalCost,
+						   Selectivity *indexSelectivity,
+						   double *indexCorrelation,
+						   double *indexPages);
+extern void hashcostestimate(struct PlannerInfo *root,
+							 struct IndexPath *path,
+							 double loop_count,
+							 Cost *indexStartupCost,
+							 Cost *indexTotalCost,
+							 Selectivity *indexSelectivity,
+							 double *indexCorrelation,
+							 double *indexPages);
+extern void gistcostestimate(struct PlannerInfo *root,
+							 struct IndexPath *path,
+							 double loop_count,
+							 Cost *indexStartupCost,
+							 Cost *indexTotalCost,
+							 Selectivity *indexSelectivity,
+							 double *indexCorrelation,
+							 double *indexPages);
+extern void spgcostestimate(struct PlannerInfo *root,
+							struct IndexPath *path,
+							double loop_count,
+							Cost *indexStartupCost,
+							Cost *indexTotalCost,
+							Selectivity *indexSelectivity,
+							double *indexCorrelation,
+							double *indexPages);
+extern void gincostestimate(struct PlannerInfo *root,
+							struct IndexPath *path,
+							double loop_count,
+							Cost *indexStartupCost,
+							Cost *indexTotalCost,
+							Selectivity *indexSelectivity,
+							double *indexCorrelation,
+							double *indexPages);
+
+#endif							/* INDEX_SELFUNCS_H */