2 Stockfish, a UCI chess playing engine derived from Glaurung 2.1
3 Copyright (C) 2004-2008 Tord Romstad (Glaurung author)
4 Copyright (C) 2008-2009 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>
33 #define _CRT_SECURE_NO_DEPRECATE
35 #include <sys/timeb.h>
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 = "765a";
64 uint64_t dbg_cnt0 = 0;
65 uint64_t dbg_cnt1 = 0;
67 bool dbg_show_mean = false;
68 bool dbg_show_hit_rate = false;
75 void dbg_hit_on(bool b) {
77 assert(!dbg_show_mean);
78 dbg_show_hit_rate = true;
84 void dbg_hit_on_c(bool c, bool b) {
92 assert(!dbg_show_mean);
93 dbg_show_hit_rate = true;
99 assert(!dbg_show_mean);
100 dbg_show_hit_rate = true;
104 void dbg_mean_of(int v) {
106 assert(!dbg_show_hit_rate);
107 dbg_show_mean = true;
112 void dbg_print_hit_rate() {
114 cout << "Total " << dbg_cnt0 << " Hit " << dbg_cnt1
115 << " hit rate (%) " << (dbg_cnt1*100)/(dbg_cnt0 ? dbg_cnt0 : 1) << endl;
118 void dbg_print_mean() {
120 cout << "Total " << dbg_cnt0 << " Mean "
121 << (float)dbg_cnt1 / (dbg_cnt0 ? dbg_cnt0 : 1) << endl;
124 void dbg_print_hit_rate(ofstream& logFile) {
126 logFile << "Total " << dbg_cnt0 << " Hit " << dbg_cnt1
127 << " hit rate (%) " << (dbg_cnt1*100)/(dbg_cnt0 ? dbg_cnt0 : 1) << endl;
130 void dbg_print_mean(ofstream& logFile) {
132 logFile << "Total " << dbg_cnt0 << " Mean "
133 << (float)dbg_cnt1 / (dbg_cnt0 ? dbg_cnt0 : 1) << endl;
136 /// engine_name() returns the full name of the current Stockfish version.
137 /// This will be either "Stockfish YYMMDD" (where YYMMDD is the date when the
138 /// program was compiled) or "Stockfish <version number>", depending on whether
139 /// the constant EngineVersion (defined in misc.h) is empty.
141 const string engine_name() {
143 const string cpu64(CpuHas64BitPath ? " 64bit" : "");
145 if (!EngineVersion.empty())
146 return AppName+ " " + EngineVersion + cpu64;
148 string date(__DATE__); // From compiler, format is "Sep 21 2008"
149 string months("Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec");
151 size_t mon = 1 + months.find(date.substr(0, 3)) / 4;
154 string day = (date[4] == ' ' ? date.substr(5, 1) : date.substr(4, 2));
156 string name = AppName + " " + AppTag + " ";
158 s << name << date.substr(date.length() - 2) << setfill('0')
159 << setw(2) << mon << setw(2) << day << cpu64;
165 /// get_system_time() returns the current system time, measured in
168 int get_system_time() {
170 #if defined(_MSC_VER)
173 return int(t.time*1000 + t.millitm);
176 gettimeofday(&t, NULL);
177 return t.tv_sec*1000 + t.tv_usec/1000;
182 /// cpu_count() tries to detect the number of CPU cores.
184 #if !defined(_MSC_VER)
186 # if defined(_SC_NPROCESSORS_ONLN)
188 return Min(sysconf(_SC_NPROCESSORS_ONLN), 8);
201 return Min(s.dwNumberOfProcessors, 8);
208 From Beowulf, from Olithink
211 /* Non-windows version */
215 struct timeval timeout;
218 FD_SET(fileno(stdin), &readfds);
219 /* Set to timeout immediately */
222 select(16, &readfds, 0, 0, &timeout);
224 return (FD_ISSET(fileno(stdin), &readfds));
228 /* Windows-version */
237 /* If we're running under XBoard then we can't use _kbhit() as the input
238 * commands are sent to us directly over the internal pipe */
240 #if defined(FILE_CNT)
246 inh = GetStdHandle(STD_INPUT_HANDLE);
247 pipe = !GetConsoleMode(inh, &dw);
249 SetConsoleMode(inh, dw & ~(ENABLE_MOUSE_INPUT | ENABLE_WINDOW_INPUT));
250 FlushConsoleInputBuffer(inh);
254 if (!PeekNamedPipe(inh, NULL, 0, NULL, &dw, NULL))
258 // Count the number of unread input records, including keyboard,
259 // mouse, and window-resizing input records.
260 GetNumberOfConsoleInputEvents(inh, &dw);
264 // Read data from console without removing it from the buffer
265 INPUT_RECORD rec[256];
267 if (!PeekConsoleInput(inh, rec, Min(dw, 256), &recCnt))
270 // Search for at least one keyboard event
271 for (DWORD i = 0; i < recCnt; i++)
272 if (rec[i].EventType == KEY_EVENT)