Distributed engine: force a different id if requested
[pachi.git] / uct / internal.h
blob922d353f148ba0849b06a8610bb8de3a50b7324f
1 #ifndef ZZGO_UCT_INTERNAL_H
2 #define ZZGO_UCT_INTERNAL_H
4 /* Internal UCT structures */
6 #include "debug.h"
7 #include "move.h"
8 #include "ownermap.h"
9 #include "playout.h"
10 #include "stats.h"
12 struct tree;
13 struct tree_node;
14 struct uct_policy;
15 struct uct_prior;
16 struct uct_dynkomi;
18 /* How big proportion of ownermap counts must be of one color to consider
19 * the point sure. */
20 #define GJ_THRES 0.8
21 /* How many games to consider at minimum before judging groups. */
22 #define GJ_MINGAMES 500
24 /* Internal engine state. */
25 struct uct {
26 int debug_level;
27 int games, gamelen;
28 float resign_ratio;
29 float loss_threshold;
30 double best2_ratio, bestr_ratio;
31 bool pass_all_alive;
32 bool territory_scoring;
33 int expand_p;
34 bool playout_amaf, playout_amaf_nakade;
35 bool amaf_prior;
36 int playout_amaf_cutoff;
37 int dumpthres;
38 int force_seed;
39 bool no_book;
40 bool fast_alloc;
41 unsigned long max_tree_size;
42 int mercymin;
44 int threads;
45 enum uct_thread_model {
46 TM_ROOT, /* Root parallelization. */
47 TM_TREE, /* Tree parallelization w/o virtual loss. */
48 TM_TREEVL, /* Tree parallelization with virtual loss. */
49 } thread_model;
50 bool parallel_tree;
51 bool virtual_loss;
52 bool pondering_opt; /* User wants pondering */
53 bool pondering; /* Actually pondering now */
54 bool slave; /* Act as slave in distributed engine. */
55 enum stone my_color;
57 int fuseki_end;
58 int yose_start;
60 int dynkomi_mask;
61 int dynkomi_interval;
62 struct uct_dynkomi *dynkomi;
64 float val_scale;
65 int val_points;
66 bool val_extra;
68 int random_policy_chance;
69 int local_tree;
70 int tenuki_d;
71 float local_tree_aging;
72 bool local_tree_allseq;
73 /* Playout-localtree integration. */
74 bool local_tree_playout; // can be true only if ELO playout
75 bool local_tree_pseqroot;
77 char *banner;
79 struct uct_policy *policy;
80 struct uct_policy *random_policy;
81 struct playout_policy *playout;
82 struct uct_prior *prior;
84 /* Used within frame of single genmove. */
85 struct board_ownermap ownermap;
86 /* Used for coordination among slaves of the distributed engine. */
87 int stats_hbits;
88 int played_own;
89 int played_all; /* games played by all slaves */
91 /* Game state - maintained by setup_state(), reset_state(). */
92 struct tree *t;
95 #define UDEBUGL(n) DEBUGL_(u->debug_level, n)
97 bool uct_pass_is_safe(struct uct *u, struct board *b, enum stone color, bool pass_all_alive);
99 void uct_prepare_move(struct uct *u, struct board *b, enum stone color);
100 void uct_genmove_setup(struct uct *u, struct board *b, enum stone color);
101 void uct_pondering_stop(struct uct *u);
104 /* This is the state used for descending the tree; we use this wrapper
105 * structure in order to be able to easily descend in multiple trees
106 * in parallel (e.g. main tree and local tree) or compute cummulative
107 * "path value" throughout the tree descent. */
108 struct uct_descent {
109 /* Active tree nodes: */
110 struct tree_node *node; /* Main tree. */
111 struct tree_node *lnode; /* Local tree. */
112 /* Value of main tree node (with all value factors, but unbiased
113 * - without exploration factor), from black's perspective. */
114 struct move_stats value;
118 typedef struct tree_node *(*uctp_choose)(struct uct_policy *p, struct tree_node *node, struct board *b, enum stone color, coord_t exclude);
119 typedef float (*uctp_evaluate)(struct uct_policy *p, struct tree *tree, struct uct_descent *descent, int parity);
120 typedef void (*uctp_descend)(struct uct_policy *p, struct tree *tree, struct uct_descent *descent, int parity, bool allow_pass);
121 typedef void (*uctp_winner)(struct uct_policy *p, struct tree *tree, struct uct_descent *descent);
122 typedef void (*uctp_prior)(struct uct_policy *p, struct tree *tree, struct tree_node *node, struct board *b, enum stone color, int parity);
123 typedef void (*uctp_update)(struct uct_policy *p, struct tree *tree, struct tree_node *node, enum stone node_color, enum stone player_color, struct playout_amafmap *amaf, float result);
125 struct uct_policy {
126 struct uct *uct;
127 uctp_choose choose;
128 uctp_winner winner;
129 uctp_evaluate evaluate;
130 uctp_descend descend;
131 uctp_update update;
132 uctp_prior prior;
133 bool wants_amaf;
134 void *data;
137 #endif