2 Stockfish, a UCI chess playing engine derived from Glaurung 2.1
3 Copyright (C) 2004-2008 Tord Romstad (Glaurung author)
4 Copyright (C) 2008-2010 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/>.
20 // To profile with callgrind uncomment following line
21 //#define USE_CALLGRIND
32 #include "ucioption.h"
35 #include <valgrind/callgrind.h>
40 extern bool execute_uci_command(const string& cmd);
41 extern void benchmark(int argc, char* argv[]);
42 extern void init_kpk_bitbase();
44 int main(int argc, char* argv[]) {
46 // Disable IO buffering for C and C++ standard libraries
47 setvbuf(stdin, NULL, _IONBF, 0);
48 setvbuf(stdout, NULL, _IONBF, 0);
49 cout.rdbuf()->pubsetbuf(NULL, 0);
50 cin.rdbuf()->pubsetbuf(NULL, 0);
52 // Startup initializations
54 Position::init_zobrist();
55 Position::init_piece_square_tables();
61 CALLGRIND_START_INSTRUMENTATION;
66 // Print copyright notice
67 cout << engine_name() << " by " << engine_authors() << endl;
70 cout << "Good! CPU has hardware POPCNT." << endl;
72 // Wait for a command from the user, and passes this command to
73 // execute_uci_command() and also intercepts EOF from stdin to
74 // ensure that we exit gracefully if the GUI dies unexpectedly.
76 while (getline(cin, cmd) && execute_uci_command(cmd)) {}
78 else if (string(argv[1]) == "bench" && argc < 8)
79 benchmark(argc, argv);
81 cout << "Usage: stockfish bench [hash size = 128] [threads = 1] "
82 << "[limit = 12] [fen positions file = default] "
83 << "[limited by depth, time, nodes or perft = depth]" << endl;