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);
53 static const std::string AppName = "Stockfish";
54 static const std::string AppTag = "";
59 bool dbg_show_mean = false;
60 bool dbg_show_hit_rate = false;
67 void dbg_hit_on(bool b) {
69 assert(!dbg_show_mean);
70 dbg_show_hit_rate = true;
76 void dbg_hit_on_c(bool c, bool b) {
84 assert(!dbg_show_mean);
85 dbg_show_hit_rate = true;
91 assert(!dbg_show_mean);
92 dbg_show_hit_rate = true;
96 void dbg_mean_of(int v) {
98 assert(!dbg_show_hit_rate);
103 void dbg_print_hit_rate() {
105 std::cout << "Total " << dbg_cnt0 << " Hit " << dbg_cnt1
106 << " hit rate (%) " << (dbg_cnt1*100)/(dbg_cnt0 ? dbg_cnt0 : 1)
110 void dbg_print_mean() {
112 std::cout << "Total " << dbg_cnt0 << " Mean "
113 << (float)dbg_cnt1 / (dbg_cnt0 ? dbg_cnt0 : 1) << std::endl;
116 void dbg_print_hit_rate(std::ofstream& logFile) {
118 logFile << "Total " << dbg_cnt0 << " Hit " << dbg_cnt1
119 << " hit rate (%) " << (dbg_cnt1*100)/(dbg_cnt0 ? dbg_cnt0 : 1)
123 void dbg_print_mean(std::ofstream& logFile) {
125 logFile << "Total " << dbg_cnt0 << " Mean "
126 << (float)dbg_cnt1 / (dbg_cnt0 ? dbg_cnt0 : 1) << std::endl;
129 /// engine_name() returns the full name of the current Stockfish version.
130 /// This will be either "Stockfish YYMMDD" (where YYMMDD is the date when the
131 /// program was compiled) or "Stockfish <version number>", depending on whether
132 /// the constant EngineVersion (defined in misc.h) is empty.
134 const std::string engine_name() {
136 if (EngineVersion.empty())
138 std::string date(__DATE__); // From compiler, format is "Sep 21 2008"
139 std::string months("Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec");
141 size_t mon = 1 + months.find(date.substr(0, 3)) / 4;
144 std::string day = (date[4] == ' ' ? date.substr(5, 1) : date.substr(4, 2));
146 std::string name = AppName + " " + AppTag + " ";
148 s << name << date.substr(date.length() - 2) << std::setfill('0')
149 << std::setw(2) << mon << std::setw(2) << day;
153 return "Stockfish " + EngineVersion;
157 /// get_system_time() returns the current system time, measured in
160 int get_system_time() {
162 gettimeofday(&t, NULL);
163 return t.tv_sec*1000 + t.tv_usec/1000;
167 /// cpu_count() tries to detect the number of CPU cores.
169 #if !defined(_MSC_VER)
171 # if defined(_SC_NPROCESSORS_ONLN)
173 return Min(sysconf(_SC_NPROCESSORS_ONLN), 8);
186 return Min(s.dwNumberOfProcessors, 8);
193 From Beowulf, from Olithink
196 /* Non-windows version */
200 struct timeval timeout;
203 FD_SET(fileno(stdin), &readfds);
204 /* Set to timeout immediately */
207 select(16, &readfds, 0, 0, &timeout);
209 return (FD_ISSET(fileno(stdin), &readfds));
213 /* Windows-version */
222 /* If we're running under XBoard then we can't use _kbhit() as the input
223 * commands are sent to us directly over the internal pipe */
225 #if defined(FILE_CNT)
231 inh = GetStdHandle(STD_INPUT_HANDLE);
232 pipe = !GetConsoleMode(inh, &dw);
234 SetConsoleMode(inh, dw & ~(ENABLE_MOUSE_INPUT | ENABLE_WINDOW_INPUT));
235 FlushConsoleInputBuffer(inh);
239 if (!PeekNamedPipe(inh, NULL, 0, NULL, &dw, NULL))
243 // Count the number of unread input records, including keyboard,
244 // mouse, and window-resizing input records.
245 GetNumberOfConsoleInputEvents(inh, &dw);
249 // Read data from console without removing it from the buffer
250 INPUT_RECORD rec[256];
252 if (!PeekConsoleInput(inh, rec, Min(dw, 256), &recCnt))
255 // Search for at least one keyboard event
256 for (DWORD i = 0; i < recCnt; i++)
257 if (rec[i].EventType == KEY_EVENT)