Adding upstream version 16.2.upstream/16.2

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 90 insertions, 0 deletions

diff --git a/src/include/optimizer/geqo.h b/src/include/optimizer/geqo.h
new file mode 100644
index 0000000..c798197
--- /dev/null
+++ b/src/include/optimizer/geqo.h
@@ -0,0 +1,90 @@
+/*-------------------------------------------------------------------------
+ *
+ * geqo.h
+ *	  prototypes for various files in optimizer/geqo
+ *
+ * Portions Copyright (c) 1996-2023, PostgreSQL Global Development Group
+ * Portions Copyright (c) 1994, Regents of the University of California
+ *
+ * src/include/optimizer/geqo.h
+ *
+ *-------------------------------------------------------------------------
+ */
+
+/* contributed by:
+   =*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=
+   *  Martin Utesch				 * Institute of Automatic Control	   *
+   =							 = University of Mining and Technology =
+   *  utesch@aut.tu-freiberg.de  * Freiberg, Germany				   *
+   =*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=
+ */
+
+#ifndef GEQO_H
+#define GEQO_H
+
+#include "common/pg_prng.h"
+#include "nodes/pathnodes.h"
+#include "optimizer/geqo_gene.h"
+
+
+/* GEQO debug flag */
+/*
+ #define GEQO_DEBUG
+ */
+
+/* choose one recombination mechanism here */
+/*
+ #define ERX
+ #define PMX
+ #define CX
+ #define PX
+ #define OX1
+ #define OX2
+ */
+#define ERX
+
+
+/*
+ * Configuration options
+ *
+ * If you change these, update backend/utils/misc/postgresql.conf.sample
+ */
+extern PGDLLIMPORT int Geqo_effort; /* 1 .. 10, knob for adjustment of
+									 * defaults */
+
+#define DEFAULT_GEQO_EFFORT 5
+#define MIN_GEQO_EFFORT 1
+#define MAX_GEQO_EFFORT 10
+
+extern PGDLLIMPORT int Geqo_pool_size;	/* 2 .. inf, or 0 to use default */
+
+extern PGDLLIMPORT int Geqo_generations;	/* 1 .. inf, or 0 to use default */
+
+extern PGDLLIMPORT double Geqo_selection_bias;
+
+#define DEFAULT_GEQO_SELECTION_BIAS 2.0
+#define MIN_GEQO_SELECTION_BIAS 1.5
+#define MAX_GEQO_SELECTION_BIAS 2.0
+
+extern PGDLLIMPORT double Geqo_seed;	/* 0 .. 1 */
+
+
+/*
+ * Private state for a GEQO run --- accessible via root->join_search_private
+ */
+typedef struct
+{
+	List	   *initial_rels;	/* the base relations we are joining */
+	pg_prng_state random_state; /* PRNG state */
+} GeqoPrivateData;
+
+
+/* routines in geqo_main.c */
+extern RelOptInfo *geqo(PlannerInfo *root,
+						int number_of_rels, List *initial_rels);
+
+/* routines in geqo_eval.c */
+extern Cost geqo_eval(PlannerInfo *root, Gene *tour, int num_gene);
+extern RelOptInfo *gimme_tree(PlannerInfo *root, Gene *tour, int num_gene);
+
+#endif							/* GEQO_H */