X-Git-Url: https://git.sesse.net/?p=stockfish;a=blobdiff_plain;f=src%2Fuci.cpp;h=ad7a8d133f95eb9e897e1da3a6eea2e4d78d8acb;hp=6593d5ad25a6fe71f14b9b2c57f0c6071285f42e;hb=81cd7d787ef2b9d914c9c09ddbed59dffb78ec77;hpb=b08ba446f655ba6292cb0b5a1012e790e4ad8d7d diff --git a/src/uci.cpp b/src/uci.cpp index 6593d5ad..ad7a8d13 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) 2008-2012 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 @@ -17,285 +17,196 @@ along with this program. If not, see . */ - -//// -//// Includes -//// - -#include #include #include #include #include "evaluate.h" -#include "misc.h" -#include "move.h" -#include "movegen.h" +#include "notation.h" #include "position.h" -#include "san.h" #include "search.h" +#include "thread.h" +#include "tt.h" #include "ucioption.h" using namespace std; +extern void benchmark(const Position& pos, istream& is); namespace { - // FEN string for the initial position - const string StartPositionFEN = "rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w KQkq - 0 1"; + // FEN string of the initial position, normal chess + const char* StartFEN = "rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w KQkq - 0 1"; - // UCIParser is a class for parsing UCI input. The class - // is actually a string stream built on a given input string. - typedef istringstream UCIParser; + // Keep track of position keys along the setup moves (from start position to the + // position just before to start searching). Needed by repetition draw detection. + Search::StateStackPtr SetupStates; - // Local functions - void set_option(UCIParser& up); - void set_position(Position& pos, UCIParser& up); - bool go(Position& pos, UCIParser& up); - void perft(Position& pos, UCIParser& up); + void set_option(istringstream& up); + void set_position(Position& pos, istringstream& up); + void go(Position& pos, istringstream& up); } -/// execute_uci_command() takes a string as input, uses a UCIParser -/// object to parse this text string as a UCI command, and calls -/// the appropriate functions. In addition to the UCI commands, -/// the function also supports a few debug commands. - -bool execute_uci_command(const string& cmd) { - - static Position pos(StartPositionFEN, false, 0); // The root position - UCIParser up(cmd); - string token; - - if (!(up >> token)) // operator>>() skips any whitespace - return true; - - if (token == "quit") - return false; - - if (token == "go") - return go(pos, up); - - if (token == "uci") - { - cout << "id name " << engine_name() - << "\nid author Tord Romstad, Marco Costalba, Joona Kiiski\n"; - print_uci_options(); - cout << "uciok" << endl; - } - else if (token == "ucinewgame") - pos.from_fen(StartPositionFEN, false); - - else if (token == "isready") - cout << "readyok" << endl; - - else if (token == "position") - set_position(pos, up); - - else if (token == "setoption") - set_option(up); - - // The remaining commands are for debugging purposes only - else if (token == "d") - pos.print(); - - else if (token == "flip") - { - Position p(pos, pos.thread()); - pos.flipped_copy(p); - } - else if (token == "eval") - { - Value evalMargin; - cout << "Incremental mg: " << mg_value(pos.value()) - << "\nIncremental eg: " << eg_value(pos.value()) - << "\nFull eval: " << evaluate(pos, evalMargin) << endl; - } - else if (token == "key") - cout << "key: " << hex << pos.get_key() - << "\nmaterial key: " << pos.get_material_key() - << "\npawn key: " << pos.get_pawn_key() << endl; - - else if (token == "perft") - perft(pos, up); - - else - cout << "Unknown command: " << cmd << endl; - - return true; +/// 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. + +void UCI::loop(const string& args) { + + Position pos(StartFEN, false, Threads.main_thread()); // The root position + string token, cmd = args; + + do { + if (args.empty() && !getline(cin, cmd)) // Block here waiting for input + cmd = "quit"; + + istringstream is(cmd); + + is >> skipws >> token; + + if (token == "quit" || token == "stop" || token == "ponderhit") + { + // 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 + // switching from pondering to normal search. + if (token != "ponderhit" || Search::Signals.stopOnPonderhit) + { + Search::Signals.stop = true; + Threads.main_thread()->notify_one(); // Could be sleeping + } + else + Search::Limits.ponder = false; + } + else if (token == "perft" && (is >> token)) // Read perft depth + { + stringstream ss; + + ss << Options["Hash"] << " " + << Options["Threads"] << " " << token << " current perft"; + + benchmark(pos, ss); + } + else if (token == "key") sync_cout << "position key: " << hex << pos.key() + << "\nmaterial key: " << pos.material_key() + << "\npawn key: " << pos.pawn_key() + << 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") set_position(pos, is); + else if (token == "setoption") set_option(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" && args.empty()); // Args have one-shot behaviour + + Threads.wait_for_search_finished(); // Cannot quit while search is running } -//// -//// Local functions -//// - namespace { - // set_position() is called when Stockfish receives the "position" UCI - // command. The input parameter is a UCIParser. It is assumed - // that this parser has consumed the first token of the UCI command - // ("position"), and is ready to read the second token ("startpos" - // or "fen", if the input is well-formed). + // 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"). - void set_position(Position& pos, UCIParser& up) { + void set_position(Position& pos, istringstream& is) { - string token; + Move m; + string token, fen; - if (!(up >> token) || (token != "startpos" && token != "fen")) - return; + is >> token; if (token == "startpos") { - pos.from_fen(StartPositionFEN, false); - if (!(up >> token)) - return; + fen = StartFEN; + is >> token; // Consume "moves" token if any } - else // fen - { - string fen; - while (up >> token && token != "moves") - { - fen += token; - fen += ' '; - } - pos.from_fen(fen, Options["UCI_Chess960"].value()); - } - - if (token != "moves") + else if (token == "fen") + while (is >> token && token != "moves") + fen += token + " "; + else return; - // Parse optional move list - Move move; - StateInfo st; - while (up >> token) + pos.set(fen, Options["UCI_Chess960"], Threads.main_thread()); + SetupStates = Search::StateStackPtr(new std::stack()); + + // Parse move list (if any) + while (is >> token && (m = move_from_uci(pos, token)) != MOVE_NONE) { - move = move_from_uci(pos, token); - pos.do_setup_move(move, st); + SetupStates->push(StateInfo()); + pos.do_move(m, SetupStates->top()); } - // Our StateInfo st is about going out of scope so copy - // its content inside pos before it disappears. - pos.detach(); } - // set_option() is called when Stockfish receives the "setoption" UCI - // command. The input parameter is a UCIParser. It is assumed - // that this parser has consumed the first token of the UCI command - // ("setoption"), and is ready to read the second token ("name", if - // the input is well-formed). + // set_option() is called when engine receives the "setoption" UCI command. The + // function updates the UCI option ("name") to the given value ("value"). - void set_option(UCIParser& up) { + void set_option(istringstream& is) { string token, name, value; - if (!(up >> token) || token != "name") // operator>>() skips any whitespace - return; - - if (!(up >> name)) - return; + is >> token; // Consume "name" token - // Handle names with included spaces - while (up >> token && token != "value") - name += (" " + token); + // Read option name (can contain spaces) + while (is >> token && token != "value") + name += string(" ", !name.empty()) + token; - if (Options.find(name) == Options.end()) - { - cout << "No such option: " << name << endl; - return; - } - - // Is a button ? - if (token != "value") - { - Options[name].set_value("true"); - return; - } - - if (!(up >> value)) - return; + // Read option value (can contain spaces) + while (is >> token) + value += string(" ", !value.empty()) + token; - // Handle values with included spaces - while (up >> token) - value += (" " + token); - - Options[name].set_value(value); + if (Options.count(name)) + Options[name] = value; + else + sync_cout << "No such option: " << name << sync_endl; } - // go() is called when Stockfish receives the "go" UCI command. The - // input parameter is a UCIParser. It is assumed that this - // parser has consumed the first token of the UCI command ("go"), - // and is ready to read the second token. The function sets the - // thinking time and other parameters from the input string, and - // calls think() (defined in search.cpp) with the appropriate - // parameters. Returns false if a quit command is received while - // thinking, returns 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, UCIParser& up) { + void go(Position& pos, istringstream& is) { + Search::LimitsType limits; + vector searchMoves; string token; - int time[2] = {0, 0}, inc[2] = {0, 0}; - int movesToGo = 0, depth = 0, nodes = 0, moveTime = 0; - bool infinite = false, ponder = false; - Move searchMoves[MOVES_MAX]; - - searchMoves[0] = MOVE_NONE; - - while (up >> token) + while (is >> token) { - if (token == "infinite") - infinite = true; - else if (token == "ponder") - ponder = true; - else if (token == "wtime") - up >> time[0]; - else if (token == "btime") - up >> time[1]; - else if (token == "winc") - up >> inc[0]; - else if (token == "binc") - up >> inc[1]; - else if (token == "movestogo") - up >> movesToGo; - else if (token == "depth") - up >> depth; - else if (token == "nodes") - up >> nodes; - else if (token == "movetime") - up >> moveTime; - else if (token == "searchmoves") - { - int numOfMoves = 0; - while (up >> token) - searchMoves[numOfMoves++] = move_from_uci(pos, token); - - searchMoves[numOfMoves] = MOVE_NONE; - } + if (token == "searchmoves") + while (is >> token) + 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; } - assert(pos.is_ok()); - - return think(pos, infinite, ponder, time, inc, movesToGo, - depth, nodes, moveTime, searchMoves); - } - - void perft(Position& pos, UCIParser& up) { - - int depth, tm; - int64_t n; - - if (!(up >> depth)) - return; - - tm = get_system_time(); - - n = perft(pos, depth * ONE_PLY); - - tm = get_system_time() - tm; - std::cout << "\nNodes " << n - << "\nTime (ms) " << tm - << "\nNodes/second " << int(n / (tm / 1000.0)) << std::endl; + Threads.start_searching(pos, limits, searchMoves, SetupStates); } }