2 Stockfish, a UCI chess playing engine derived from Glaurung 2.1
3 Copyright (C) 2004-2008 Tord Romstad (Glaurung author)
4 Copyright (C) 2008-2012 Marco Costalba, Joona Kiiski, Tord Romstad
6 Stockfish is free software: you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation, either version 3 of the License, or
9 (at your option) any later version.
11 Stockfish is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with this program. If not, see <http://www.gnu.org/licenses/>.
29 #include "ucioption.h"
33 UCI::OptionsMap Options; // Global object
37 /// 'On change' actions, triggered by an option's value change
38 void on_logger(const Option& o) { start_logger(o); }
39 void on_eval(const Option&) { Eval::init(); }
40 void on_threads(const Option&) { Threads.read_uci_options(); }
41 void on_hash_size(const Option& o) { TT.set_size(o); }
42 void on_clear_hash(const Option&) { TT.clear(); }
45 /// Our case insensitive less() function as required by UCI protocol
46 bool ci_less(char c1, char c2) { return tolower(c1) < tolower(c2); }
48 bool CaseInsensitiveLess::operator() (const string& s1, const string& s2) const {
49 return std::lexicographical_compare(s1.begin(), s1.end(), s2.begin(), s2.end(), ci_less);
53 /// init() initializes the UCI options to their hard coded default values
54 /// and initializes the default value of "Threads" and "Min Split Depth"
55 /// parameters according to the number of CPU cores detected.
57 void init(OptionsMap& o) {
59 int cpus = std::min(cpu_count(), MAX_THREADS);
60 int msd = cpus < 8 ? 4 : 7;
62 o["Use Debug Log"] = Option(false, on_logger);
63 o["Use Search Log"] = Option(false);
64 o["Search Log Filename"] = Option("SearchLog.txt");
65 o["Book File"] = Option("book.bin");
66 o["Best Book Move"] = Option(false);
67 o["Mobility (Middle Game)"] = Option(100, 0, 200, on_eval);
68 o["Mobility (Endgame)"] = Option(100, 0, 200, on_eval);
69 o["Passed Pawns (Middle Game)"] = Option(100, 0, 200, on_eval);
70 o["Passed Pawns (Endgame)"] = Option(100, 0, 200, on_eval);
71 o["Space"] = Option(100, 0, 200, on_eval);
72 o["Aggressiveness"] = Option(100, 0, 200, on_eval);
73 o["Cowardice"] = Option(100, 0, 200, on_eval);
74 o["Min Split Depth"] = Option(msd, 4, 7, on_threads);
75 o["Max Threads per Split Point"] = Option(5, 4, 8, on_threads);
76 o["Threads"] = Option(cpus, 1, MAX_THREADS, on_threads);
77 o["Use Sleeping Threads"] = Option(true, on_threads);
78 o["Hash"] = Option(32, 4, 8192, on_hash_size);
79 o["Clear Hash"] = Option(on_clear_hash);
80 o["Ponder"] = Option(true);
81 o["OwnBook"] = Option(false);
82 o["MultiPV"] = Option(1, 1, 500);
83 o["Skill Level"] = Option(20, 0, 20);
84 o["Emergency Move Horizon"] = Option(40, 0, 50);
85 o["Emergency Base Time"] = Option(200, 0, 30000);
86 o["Emergency Move Time"] = Option(70, 0, 5000);
87 o["Minimum Thinking Time"] = Option(20, 0, 5000);
88 o["Slow Mover"] = Option(100, 10, 1000);
89 o["UCI_Chess960"] = Option(false);
90 o["UCI_AnalyseMode"] = Option(false, on_eval);
94 /// operator<<() is used to print all the options default values in chronological
95 /// insertion order (the idx field) and in the format defined by the UCI protocol.
97 std::ostream& operator<<(std::ostream& os, const OptionsMap& om) {
99 for (size_t idx = 0; idx < om.size(); idx++)
100 for (OptionsMap::const_iterator it = om.begin(); it != om.end(); ++it)
101 if (it->second.idx == idx)
103 const Option& o = it->second;
104 os << "\noption name " << it->first << " type " << o.type;
106 if (o.type != "button")
107 os << " default " << o.defaultValue;
109 if (o.type == "spin")
110 os << " min " << o.min << " max " << o.max;
118 /// Option c'tors and conversion operators
120 Option::Option(const char* v, Fn* f) : type("string"), min(0), max(0), idx(Options.size()), on_change(f)
121 { defaultValue = currentValue = v; }
123 Option::Option(bool v, Fn* f) : type("check"), min(0), max(0), idx(Options.size()), on_change(f)
124 { defaultValue = currentValue = (v ? "true" : "false"); }
126 Option::Option(Fn* f) : type("button"), min(0), max(0), idx(Options.size()), on_change(f)
129 Option::Option(int v, int minv, int maxv, Fn* f) : type("spin"), min(minv), max(maxv), idx(Options.size()), on_change(f)
130 { std::ostringstream ss; ss << v; defaultValue = currentValue = ss.str(); }
133 Option::operator int() const {
134 assert(type == "check" || type == "spin");
135 return (type == "spin" ? atoi(currentValue.c_str()) : currentValue == "true");
138 Option::operator std::string() const {
139 assert(type == "string");
144 /// operator=() updates currentValue and triggers on_change() action. It's up to
145 /// the GUI to check for option's limits, but we could receive the new value from
146 /// the user by console window, so let's check the bounds anyway.
148 Option& Option::operator=(const string& v) {
150 assert(!type.empty());
152 if ( (type != "button" && v.empty())
153 || (type == "check" && v != "true" && v != "false")
154 || (type == "spin" && (atoi(v.c_str()) < min || atoi(v.c_str()) > max)))
157 if (type != "button")