X-Git-Url: https://git.sesse.net/?p=stockfish;a=blobdiff_plain;f=src%2Fuci.cpp;h=6027295d94d67ed507de3de614db236d26f9e3b2;hp=d7c65e10e066810811def3763f3685c24ca10492;hb=15e21911110f9d459c4fef2bb17903d97345d0b9;hpb=dab1cd8af9c95c119500e97920f927ae4aafc24f diff --git a/src/uci.cpp b/src/uci.cpp index d7c65e10..6027295d 100644 --- a/src/uci.cpp +++ b/src/uci.cpp @@ -1,7 +1,7 @@ /* Stockfish, a UCI chess playing engine derived from Glaurung 2.1 Copyright (C) 2004-2008 Tord Romstad (Glaurung author) - Copyright (C) 2008-2010 Marco Costalba, Joona Kiiski, Tord Romstad + Copyright (C) 2008-2014 Marco Costalba, Joona Kiiski, Tord Romstad Stockfish is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by @@ -17,111 +17,40 @@ along with this program. If not, see . */ -#include +#include #include #include #include -#include #include "evaluate.h" -#include "misc.h" -#include "move.h" +#include "notation.h" #include "position.h" #include "search.h" +#include "thread.h" +#include "tt.h" #include "ucioption.h" using namespace std; -namespace { - - // FEN string for the initial position - const char* StarFEN = "rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w KQkq - 0 1"; - - // Keep track of position keys along the setup moves (from start position to the - // position just before to start searching). This is needed by draw detection - // where, due to 50 moves rule, we need to check at most 100 plies back. - StateInfo StateRingBuf[102], *SetupState = StateRingBuf; - - void set_option(istringstream& up); - void set_position(Position& pos, istringstream& up); - bool go(Position& pos, istringstream& up); - void perft(Position& pos, istringstream& up); -} - - -/// Wait for a command from the user, parse this text string as an UCI command, -/// and calls the appropriate functions. Also intercepts EOF from stdin to -/// ensure that we exit gracefully if the GUI dies unexpectedly. In addition to -/// the UCI commands, the function also supports a few debug commands. - -void uci_loop() { - - Position pos(StarFEN, false, 0); // The root position - string cmd, token; - - while (getline(cin, cmd)) - { - istringstream is(cmd); - - is >> skipws >> token; +extern void benchmark(const Position& pos, istream& is); - if (token == "quit") - break; - - if (token == "go" && !go(pos, is)) - break; - - if (token == "ucinewgame") - pos.from_fen(StarFEN, false); - - else if (token == "isready") - cout << "readyok" << endl; - - else if (token == "position") - set_position(pos, is); - - else if (token == "setoption") - set_option(is); - - else if (token == "perft") - perft(pos, is); - - else if (token == "d") - pos.print(); - - else if (token == "flip") - pos.flip(); - - else if (token == "eval") - { - read_evaluation_uci_options(pos.side_to_move()); - cout << trace_evaluate(pos) << endl; - } - - else if (token == "key") - cout << "key: " << hex << pos.get_key() - << "\nmaterial key: " << pos.get_material_key() - << "\npawn key: " << pos.get_pawn_key() << endl; +namespace { - else if (token == "uci") - cout << "id name " << engine_name() - << "\nid author " << engine_authors() - << "\n" << Options.print_all() - << "\nuciok" << endl; - else - cout << "Unknown command: " << cmd << endl; - } -} + // FEN string of the initial position, normal chess + const char* StartFEN = "rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w KQkq - 0 1"; + // Keep a track of the position keys along the setup moves (from the start position + // to the position just before the search starts). This is needed by the repetition + // draw detection code. + Search::StateStackPtr SetupStates; -namespace { - // set_position() is called when engine receives the "position" UCI - // command. The function sets up the position described in the given - // fen string ("fen") or the starting position ("startpos") and then - // makes the moves given in the following move list ("moves"). + // position() is called when engine receives the "position" UCI command. + // The function sets up the position described in the given FEN string ("fen") + // or the starting position ("startpos") and then makes the moves given in the + // following move list ("moves"). - void set_position(Position& pos, istringstream& is) { + void position(Position& pos, istringstream& is) { Move m; string token, fen; @@ -130,7 +59,7 @@ namespace { if (token == "startpos") { - fen = StarFEN; + fen = StartFEN; is >> token; // Consume "moves" token if any } else if (token == "fen") @@ -139,25 +68,22 @@ namespace { else return; - pos.from_fen(fen, Options["UCI_Chess960"].value()); + pos.set(fen, Options["UCI_Chess960"], Threads.main()); + SetupStates = Search::StateStackPtr(new std::stack()); // Parse move list (if any) while (is >> token && (m = move_from_uci(pos, token)) != MOVE_NONE) { - pos.do_move(m, *SetupState); - - // Increment pointer to StateRingBuf circular buffer - if (++SetupState - StateRingBuf >= 102) - SetupState = StateRingBuf; + SetupStates->push(StateInfo()); + pos.do_move(m, SetupStates->top()); } } - // set_option() is called when engine receives the "setoption" UCI - // command. The function updates the corresponding UCI option ("name") - // to the given value ("value"). + // setoption() is called when engine receives the "setoption" UCI command. The + // function updates the UCI option ("name") to the given value ("value"). - void set_option(istringstream& is) { + void setoption(istringstream& is) { string token, name, value; @@ -171,80 +97,119 @@ namespace { while (is >> token) value += string(" ", !value.empty()) + token; - if (Options.find(name) != Options.end()) - Options[name].set_value(value.empty() ? "true" : value); // UCI buttons don't have "value" + if (Options.count(name)) + Options[name] = value; else - cout << "No such option: " << name << endl; + sync_cout << "No such option: " << name << sync_endl; } - // go() is called when engine receives the "go" UCI command. The - // function sets the thinking time and other parameters from the input - // string, and then calls think(). Returns false if a quit command - // is received while thinking, true otherwise. + // go() is called when engine receives the "go" UCI command. The function sets + // the thinking time and other parameters from the input string, and starts + // the search. - bool go(Position& pos, istringstream& is) { + void go(const Position& pos, istringstream& is) { + Search::LimitsType limits; string token; - SearchLimits limits; - std::vector searchMoves; - int time[] = { 0, 0 }, inc[] = { 0, 0 }; while (is >> token) { - if (token == "infinite") - limits.infinite = true; - else if (token == "ponder") - limits.ponder = true; - else if (token == "wtime") - is >> time[WHITE]; - else if (token == "btime") - is >> time[BLACK]; - else if (token == "winc") - is >> inc[WHITE]; - else if (token == "binc") - is >> inc[BLACK]; - else if (token == "movestogo") - is >> limits.movesToGo; - else if (token == "depth") - is >> limits.maxDepth; - else if (token == "nodes") - is >> limits.maxNodes; - else if (token == "movetime") - is >> limits.maxTime; - else if (token == "searchmoves") + if (token == "searchmoves") while (is >> token) - searchMoves.push_back(move_from_uci(pos, token)); + limits.searchmoves.push_back(move_from_uci(pos, token)); + + else if (token == "wtime") is >> limits.time[WHITE]; + else if (token == "btime") is >> limits.time[BLACK]; + else if (token == "winc") is >> limits.inc[WHITE]; + else if (token == "binc") is >> limits.inc[BLACK]; + else if (token == "movestogo") is >> limits.movestogo; + else if (token == "depth") is >> limits.depth; + else if (token == "nodes") is >> limits.nodes; + else if (token == "movetime") is >> limits.movetime; + else if (token == "mate") is >> limits.mate; + else if (token == "infinite") limits.infinite = true; + else if (token == "ponder") limits.ponder = true; } - searchMoves.push_back(MOVE_NONE); - limits.time = time[pos.side_to_move()]; - limits.increment = inc[pos.side_to_move()]; - - return think(pos, limits, &searchMoves[0]); + Threads.start_thinking(pos, limits, SetupStates); } +} // namespace - // perft() is called when engine receives the "perft" command. - // The function calls perft() passing the required search depth - // then prints counted leaf nodes and elapsed time. - void perft(Position& pos, istringstream& is) { +/// Wait for a command from the user, parse this text string as an UCI command, +/// and call the appropriate functions. Also intercepts EOF from stdin to ensure +/// that we exit gracefully if the GUI dies unexpectedly. In addition to the UCI +/// commands, the function also supports a few debug commands. - int depth, time; - int64_t n; +void UCI::loop(int argc, char* argv[]) { - if (!(is >> depth)) - return; + Position pos(StartFEN, false, Threads.main()); // The root position + string token, cmd; - time = get_system_time(); + for (int i = 1; i < argc; ++i) + cmd += std::string(argv[i]) + " "; - n = perft(pos, depth * ONE_PLY); + do { + if (argc == 1 && !getline(cin, cmd)) // Block here waiting for input + cmd = "quit"; - time = get_system_time() - time; + istringstream is(cmd); - std::cout << "\nNodes " << n - << "\nTime (ms) " << time - << "\nNodes/second " << int(n / (time / 1000.0)) << std::endl; - } + is >> skipws >> token; + + if (token == "quit" || token == "stop" || token == "ponderhit") + { + // The GUI sends 'ponderhit' to tell us to ponder on the same move the + // opponent has played. In case Signals.stopOnPonderhit is set we are + // waiting for 'ponderhit' to stop the search (for instance because we + // already ran out of time), otherwise we should continue searching but + // switch from pondering to normal search. + if (token != "ponderhit" || Search::Signals.stopOnPonderhit) + { + Search::Signals.stop = true; + Threads.main()->notify_one(); // Could be sleeping + } + else + Search::Limits.ponder = false; + } + else if (token == "perft") + { + int depth; + stringstream ss; + + is >> depth; + ss << Options["Hash"] << " " + << Options["Threads"] << " " << depth << " current " << token; + + benchmark(pos, ss); + } + else if (token == "key") + sync_cout << hex << uppercase << setfill('0') + << "position key: " << setw(16) << pos.key() + << "\nmaterial key: " << setw(16) << pos.material_key() + << "\npawn key: " << setw(16) << pos.pawn_key() + << dec << nouppercase << setfill(' ') << sync_endl; + + else if (token == "uci") + sync_cout << "id name " << engine_info(true) + << "\n" << Options + << "\nuciok" << sync_endl; + + else if (token == "ucinewgame") TT.clear(); + else if (token == "go") go(pos, is); + else if (token == "position") position(pos, is); + else if (token == "setoption") setoption(is); + else if (token == "flip") pos.flip(); + else if (token == "bench") benchmark(pos, is); + else if (token == "d") sync_cout << pos.pretty() << sync_endl; + else if (token == "isready") sync_cout << "readyok" << sync_endl; + else if (token == "eval") sync_cout << Eval::trace(pos) << sync_endl; + else + sync_cout << "Unknown command: " << cmd << sync_endl; + + } while (token != "quit" && argc == 1); // Passed args have one-shot behaviour + + Threads.wait_for_think_finished(); // Cannot quit whilst the search is running }