#include "move.h"
#include "position.h"
#include "search.h"
+#include "thread.h"
#include "ucioption.h"
using namespace std;
namespace {
// FEN string for the initial position
- const string StartPositionFEN = "rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w KQkq - 0 1";
+ 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
void set_option(istringstream& up);
void set_position(Position& pos, istringstream& up);
- bool go(Position& pos, istringstream& up);
+ void go(Position& pos, istringstream& up);
void perft(Position& pos, istringstream& up);
}
-/// execute_uci_command() takes a string as input, parses this text string as
-/// an UCI command, and calls the appropriate functions. In addition to the
-/// UCI commands, the function also supports a few debug commands.
+/// 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.
-bool execute_uci_command(const string& cmd) {
+void uci_loop() {
- static Position pos(StartPositionFEN, false, 0); // The root position
+ Position pos(StarFEN, false, 0); // The root position
+ string cmd, token;
+ bool quit = false;
- istringstream is(cmd);
- string token;
+ while (!quit && getline(cin, cmd))
+ {
+ istringstream is(cmd);
- is >> skipws >> token;
+ is >> skipws >> token;
- if (token == "quit")
- return false;
+ quit = (token == "quit");
- if (token == "go")
- return go(pos, is);
+ if (token == "quit" || token == "stop" || token == "ponderhit")
+ {
+ uci_async_command(token);
+ Threads[0].wake_up(); // In case is waiting for stop or ponderhit
+ }
- if (token == "ucinewgame")
- pos.from_fen(StartPositionFEN, false);
+ else if (token == "go")
+ go(pos, is);
- else if (token == "isready")
- cout << "readyok" << endl;
+ else if (token == "ucinewgame")
+ pos.from_fen(StarFEN, false);
- else if (token == "position")
- set_position(pos, is);
+ else if (token == "isready")
+ cout << "readyok" << endl;
- else if (token == "setoption")
- set_option(is);
+ else if (token == "position")
+ set_position(pos, is);
- else if (token == "perft")
- perft(pos, is);
+ else if (token == "setoption")
+ set_option(is);
- else if (token == "d")
- pos.print();
+ else if (token == "perft")
+ perft(pos, is);
- else if (token == "flip")
- pos.flip();
+ else if (token == "d")
+ pos.print();
- else if (token == "eval")
- {
- read_evaluation_uci_options(pos.side_to_move());
- cout << trace_evaluate(pos) << endl;
- }
+ else if (token == "flip")
+ pos.flip_me();
- 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 == "eval")
+ {
+ read_evaluation_uci_options(pos.side_to_move());
+ cout << trace_evaluate(pos) << endl;
+ }
- 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;
+ else if (token == "key")
+ cout << "key: " << hex << pos.get_key()
+ << "\nmaterial key: " << pos.get_material_key()
+ << "\npawn key: " << pos.get_pawn_key() << endl;
- return true;
+ 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;
+ }
}
if (token == "startpos")
{
- fen = StartPositionFEN;
+ fen = StarFEN;
is >> token; // Consume "moves" token if any
}
else if (token == "fen")
// string, and then calls think(). Returns false if a quit command
// is received while thinking, true otherwise.
- bool go(Position& pos, istringstream& is) {
+ void go(Position& pos, istringstream& is) {
string token;
- SearchLimits limits;
- std::vector<Move> searchMoves;
int time[] = { 0, 0 }, inc[] = { 0, 0 };
+ memset(&Limits, 0, sizeof(SearchLimits));
+ SearchMoves.clear();
+ RootPosition = &pos;
+
while (is >> token)
{
if (token == "infinite")
- limits.infinite = true;
+ Limits.infinite = true;
else if (token == "ponder")
- limits.ponder = true;
+ Limits.ponder = true;
else if (token == "wtime")
is >> time[WHITE];
else if (token == "btime")
else if (token == "binc")
is >> inc[BLACK];
else if (token == "movestogo")
- is >> limits.movesToGo;
+ is >> Limits.movesToGo;
else if (token == "depth")
- is >> limits.maxDepth;
+ is >> Limits.maxDepth;
else if (token == "nodes")
- is >> limits.maxNodes;
+ is >> Limits.maxNodes;
else if (token == "movetime")
- is >> limits.maxTime;
+ is >> Limits.maxTime;
else if (token == "searchmoves")
while (is >> token)
- searchMoves.push_back(move_from_uci(pos, token));
+ SearchMoves.push_back(move_from_uci(pos, token));
}
- searchMoves.push_back(MOVE_NONE);
- limits.time = time[pos.side_to_move()];
- limits.increment = inc[pos.side_to_move()];
+ 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();
}
projects / stockfish / blobdiff