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>
31 # include <sys/pstat.h>
36 #define _CRT_SECURE_NO_DEPRECATE
38 #include <sys/timeb.h>
53 /// Version number. If this is left empty, the current date (in the format
54 /// YYMMDD) is used as a version number.
56 static const string EngineVersion = "";
57 static const string AppName = "Stockfish";
58 static const string AppTag = "";
67 uint64_t dbg_cnt0 = 0;
68 uint64_t dbg_cnt1 = 0;
70 bool dbg_show_mean = false;
71 bool dbg_show_hit_rate = false;
78 void dbg_hit_on(bool b) {
80 assert(!dbg_show_mean);
81 dbg_show_hit_rate = true;
87 void dbg_hit_on_c(bool c, bool b) {
95 assert(!dbg_show_mean);
96 dbg_show_hit_rate = true;
102 assert(!dbg_show_mean);
103 dbg_show_hit_rate = true;
107 void dbg_mean_of(int v) {
109 assert(!dbg_show_hit_rate);
110 dbg_show_mean = true;
115 void dbg_print_hit_rate() {
117 cout << "Total " << dbg_cnt0 << " Hit " << dbg_cnt1
118 << " hit rate (%) " << (dbg_cnt1*100)/(dbg_cnt0 ? dbg_cnt0 : 1) << endl;
121 void dbg_print_mean() {
123 cout << "Total " << dbg_cnt0 << " Mean "
124 << (float)dbg_cnt1 / (dbg_cnt0 ? dbg_cnt0 : 1) << endl;
127 void dbg_print_hit_rate(ofstream& logFile) {
129 logFile << "Total " << dbg_cnt0 << " Hit " << dbg_cnt1
130 << " hit rate (%) " << (dbg_cnt1*100)/(dbg_cnt0 ? dbg_cnt0 : 1) << endl;
133 void dbg_print_mean(ofstream& logFile) {
135 logFile << "Total " << dbg_cnt0 << " Mean "
136 << (float)dbg_cnt1 / (dbg_cnt0 ? dbg_cnt0 : 1) << endl;
139 /// engine_name() returns the full name of the current Stockfish version.
140 /// This will be either "Stockfish YYMMDD" (where YYMMDD is the date when the
141 /// program was compiled) or "Stockfish <version number>", depending on whether
142 /// the constant EngineVersion (defined in misc.h) is empty.
144 const string engine_name() {
146 const string cpu64(CpuHas64BitPath ? " 64bit" : "");
148 if (!EngineVersion.empty())
149 return AppName+ " " + EngineVersion + cpu64;
151 string date(__DATE__); // From compiler, format is "Sep 21 2008"
152 string months("Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec");
154 size_t mon = 1 + months.find(date.substr(0, 3)) / 4;
157 string day = (date[4] == ' ' ? date.substr(5, 1) : date.substr(4, 2));
159 string name = AppName + " " + AppTag + " ";
161 s << name << date.substr(date.length() - 2) << setfill('0')
162 << setw(2) << mon << setw(2) << day << cpu64;
168 /// get_system_time() returns the current system time, measured in
171 int get_system_time() {
173 #if defined(_MSC_VER)
176 return int(t.time*1000 + t.millitm);
179 gettimeofday(&t, NULL);
180 return t.tv_sec*1000 + t.tv_usec/1000;
185 /// cpu_count() tries to detect the number of CPU cores.
187 #if !defined(_MSC_VER)
189 # if defined(_SC_NPROCESSORS_ONLN)
191 return Min(sysconf(_SC_NPROCESSORS_ONLN), 8);
193 # elif defined(__hpux)
195 struct pst_dynamic psd;
196 if (pstat_getdynamic(&psd, sizeof(psd), (size_t)1, 0) == -1)
199 return Min(psd.psd_proc_cnt, 8);
212 return Min(s.dwNumberOfProcessors, 8);
219 From Beowulf, from Olithink
222 /* Non-windows version */
226 struct timeval timeout;
229 FD_SET(fileno(stdin), &readfds);
230 /* Set to timeout immediately */
233 select(16, &readfds, 0, 0, &timeout);
235 return (FD_ISSET(fileno(stdin), &readfds));
239 /* Windows-version */
248 /* If we're running under XBoard then we can't use _kbhit() as the input
249 * commands are sent to us directly over the internal pipe */
251 #if defined(FILE_CNT)
257 inh = GetStdHandle(STD_INPUT_HANDLE);
258 pipe = !GetConsoleMode(inh, &dw);
260 SetConsoleMode(inh, dw & ~(ENABLE_MOUSE_INPUT | ENABLE_WINDOW_INPUT));
261 FlushConsoleInputBuffer(inh);
265 if (!PeekNamedPipe(inh, NULL, 0, NULL, &dw, NULL))
269 // Count the number of unread input records, including keyboard,
270 // mouse, and window-resizing input records.
271 GetNumberOfConsoleInputEvents(inh, &dw);
275 // Read data from console without removing it from the buffer
276 INPUT_RECORD rec[256];
278 if (!PeekConsoleInput(inh, rec, Min(dw, 256), &recCnt))
281 // Search for at least one keyboard event
282 for (DWORD i = 0; i < recCnt; i++)
283 if (rec[i].EventType == KEY_EVENT)