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 Marco Costalba
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/>.
25 #if !defined(_MSC_VER)
27 # include <sys/time.h>
28 # include <sys/types.h>
36 int gettimeofday(struct timeval * tp, struct timezone * tzp);
50 /// Version number. If this is left empty, the current date (in the format
51 /// YYMMDD) is used as a version number.
53 static const string EngineVersion = "";
54 static const string AppName = "Stockfish";
55 static const string AppTag = "";
65 bool dbg_show_mean = false;
66 bool dbg_show_hit_rate = false;
73 void dbg_hit_on(bool b) {
75 assert(!dbg_show_mean);
76 dbg_show_hit_rate = true;
82 void dbg_hit_on_c(bool c, bool b) {
90 assert(!dbg_show_mean);
91 dbg_show_hit_rate = true;
97 assert(!dbg_show_mean);
98 dbg_show_hit_rate = true;
102 void dbg_mean_of(int v) {
104 assert(!dbg_show_hit_rate);
105 dbg_show_mean = true;
110 void dbg_print_hit_rate() {
112 cout << "Total " << dbg_cnt0 << " Hit " << dbg_cnt1
113 << " hit rate (%) " << (dbg_cnt1*100)/(dbg_cnt0 ? dbg_cnt0 : 1) << endl;
116 void dbg_print_mean() {
118 cout << "Total " << dbg_cnt0 << " Mean "
119 << (float)dbg_cnt1 / (dbg_cnt0 ? dbg_cnt0 : 1) << endl;
122 void dbg_print_hit_rate(ofstream& logFile) {
124 logFile << "Total " << dbg_cnt0 << " Hit " << dbg_cnt1
125 << " hit rate (%) " << (dbg_cnt1*100)/(dbg_cnt0 ? dbg_cnt0 : 1) << endl;
128 void dbg_print_mean(ofstream& logFile) {
130 logFile << "Total " << dbg_cnt0 << " Mean "
131 << (float)dbg_cnt1 / (dbg_cnt0 ? dbg_cnt0 : 1) << endl;
134 /// engine_name() returns the full name of the current Stockfish version.
135 /// This will be either "Stockfish YYMMDD" (where YYMMDD is the date when the
136 /// program was compiled) or "Stockfish <version number>", depending on whether
137 /// the constant EngineVersion (defined in misc.h) is empty.
139 const string engine_name() {
141 if (!EngineVersion.empty())
142 return "Stockfish " + EngineVersion;
144 string date(__DATE__); // From compiler, format is "Sep 21 2008"
145 string months("Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec");
147 size_t mon = 1 + months.find(date.substr(0, 3)) / 4;
150 string day = (date[4] == ' ' ? date.substr(5, 1) : date.substr(4, 2));
152 string name = AppName + " " + AppTag + " ";
154 s << name << date.substr(date.length() - 2) << setfill('0')
155 << setw(2) << mon << setw(2) << day;
161 /// get_system_time() returns the current system time, measured in
164 int get_system_time() {
166 gettimeofday(&t, NULL);
167 return t.tv_sec*1000 + t.tv_usec/1000;
171 /// cpu_count() tries to detect the number of CPU cores.
173 #if !defined(_MSC_VER)
175 # if defined(_SC_NPROCESSORS_ONLN)
177 return Min(sysconf(_SC_NPROCESSORS_ONLN), 8);
190 return Min(s.dwNumberOfProcessors, 8);
197 From Beowulf, from Olithink
200 /* Non-windows version */
204 struct timeval timeout;
207 FD_SET(fileno(stdin), &readfds);
208 /* Set to timeout immediately */
211 select(16, &readfds, 0, 0, &timeout);
213 return (FD_ISSET(fileno(stdin), &readfds));
217 /* Windows-version */
226 /* If we're running under XBoard then we can't use _kbhit() as the input
227 * commands are sent to us directly over the internal pipe */
229 #if defined(FILE_CNT)
235 inh = GetStdHandle(STD_INPUT_HANDLE);
236 pipe = !GetConsoleMode(inh, &dw);
238 SetConsoleMode(inh, dw & ~(ENABLE_MOUSE_INPUT | ENABLE_WINDOW_INPUT));
239 FlushConsoleInputBuffer(inh);
243 if (!PeekNamedPipe(inh, NULL, 0, NULL, &dw, NULL))
247 // Count the number of unread input records, including keyboard,
248 // mouse, and window-resizing input records.
249 GetNumberOfConsoleInputEvents(inh, &dw);
253 // Read data from console without removing it from the buffer
254 INPUT_RECORD rec[256];
256 if (!PeekConsoleInput(inh, rec, Min(dw, 256), &recCnt))
259 // Search for at least one keyboard event
260 for (DWORD i = 0; i < recCnt; i++)
261 if (rec[i].EventType == KEY_EVENT)