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https://github.com/sockspls/badfish
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a107910951
This aims to remove some of the annoying global structure which Stockfish has. Overall there is no major elo regression to be expected. Non regression SMP STC (paused, early version): https://tests.stockfishchess.org/tests/view/65983d7979aa8af82b9608f1 LLR: 0.23 (-2.94,2.94) <-1.75,0.25> Total: 76232 W: 19035 L: 19096 D: 38101 Ptnml(0-2): 92, 8735, 20515, 8690, 84 Non regression STC (early version): https://tests.stockfishchess.org/tests/view/6595b3a479aa8af82b95da7f LLR: 2.93 (-2.94,2.94) <-1.75,0.25> Total: 185344 W: 47027 L: 46972 D: 91345 Ptnml(0-2): 571, 21285, 48943, 21264, 609 Non regression SMP STC: https://tests.stockfishchess.org/tests/view/65a0715c79aa8af82b96b7e4 LLR: 2.94 (-2.94,2.94) <-1.75,0.25> Total: 142936 W: 35761 L: 35662 D: 71513 Ptnml(0-2): 209, 16400, 38135, 16531, 193 These global structures/variables add hidden dependencies and allow data to be mutable from where it shouldn't it be (i.e. options). They also prevent Stockfish from internal selfplay, which would be a nice thing to be able to do, i.e. instantiate two Stockfish instances and let them play against each other. It will also allow us to make Stockfish a library, which can be easier used on other platforms. For consistency with the old search code, `thisThread` has been kept, even though it is not strictly necessary anymore. This the first major refactor of this kind (in recent time), and future changes are required, to achieve the previously described goals. This includes cleaning up the dependencies, transforming the network to be self contained and coming up with a plan to deal with proper tablebase memory management (see comments for more information on this). The removal of these global structures has been discussed in parts with Vondele and Sopel. closes https://github.com/official-stockfish/Stockfish/pull/4968 No functional change
88 lines
2.5 KiB
C++
88 lines
2.5 KiB
C++
/*
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Stockfish, a UCI chess playing engine derived from Glaurung 2.1
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Copyright (C) 2004-2024 The Stockfish developers (see AUTHORS file)
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Stockfish is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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Stockfish is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef UCI_H_INCLUDED
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#define UCI_H_INCLUDED
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#include <cstdint>
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#include <iostream>
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#include <string>
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#include <unordered_map>
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#include "evaluate.h"
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#include "misc.h"
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#include "position.h"
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#include "thread.h"
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#include "tt.h"
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#include "ucioption.h"
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namespace Stockfish {
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namespace Eval::NNUE {
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enum NetSize : int;
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}
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namespace Search {
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class Worker;
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}
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class Move;
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enum Square : int;
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using Value = int;
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class UCI {
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public:
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UCI(int argc, char** argv);
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void loop();
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static int to_cp(Value v);
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static std::string value(Value v);
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static std::string square(Square s);
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static std::string move(Move m, bool chess960);
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static std::string pv(const Search::Worker& workerThread,
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TimePoint elapsed,
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uint64_t nodesSearched,
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uint64_t tb_hits,
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int hashfull,
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bool rootInTB);
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static std::string wdl(Value v, int ply);
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static Move to_move(const Position& pos, std::string& str);
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const std::string& workingDirectory() const { return cli.workingDirectory; }
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OptionsMap options;
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std::unordered_map<Eval::NNUE::NetSize, Eval::EvalFile> evalFiles;
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private:
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TranspositionTable tt;
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ThreadPool threads;
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CommandLine cli;
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void go(Position& pos, std::istringstream& is, StateListPtr& states);
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void bench(Position& pos, std::istream& args, StateListPtr& states);
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void position(Position& pos, std::istringstream& is, StateListPtr& states);
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void trace_eval(Position& pos);
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void search_clear();
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void setoption(std::istringstream& is);
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};
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} // namespace Stockfish
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#endif // #ifndef UCI_H_INCLUDED
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