/*
- Glaurung, a UCI chess playing engine.
- Copyright (C) 2004-2008 Tord Romstad
+ Stockfish, a UCI chess playing engine derived from Glaurung 2.1
+ Copyright (C) 2004-2008 Tord Romstad (Glaurung author)
+ Copyright (C) 2008-2010 Marco Costalba, Joona Kiiski, Tord Romstad
- Glaurung is free software: you can redistribute it and/or modify
+ Stockfish is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
-
- Glaurung is distributed in the hope that it will be useful,
+
+ Stockfish is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
-
+
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
# include <sys/time.h>
# include <sys/types.h>
# include <unistd.h>
+# if defined(__hpux)
+# include <sys/pstat.h>
+# endif
#else
-# include <windows.h>
-# include <time.h>
-# include "dos.h"
-int gettimeofday(struct timeval * tp, struct timezone * tzp);
+#define _CRT_SECURE_NO_DEPRECATE
+#include <windows.h>
+#include <sys/timeb.h>
#endif
+#include <cassert>
#include <cstdio>
+#include <cstring>
#include <iomanip>
+#include <iostream>
#include <sstream>
+#include "bitcount.h"
#include "misc.h"
+using namespace std;
+
+/// Version number. If this is left empty, the current date (in the format
+/// YYMMDD) is used as a version number.
+
+static const string EngineVersion = "";
+static const string AppName = "Stockfish";
+static const string AppTag = "";
+
+
+////
+//// Variables
+////
+
+bool Chess960;
+
+uint64_t dbg_cnt0 = 0;
+uint64_t dbg_cnt1 = 0;
+
+bool dbg_show_mean = false;
+bool dbg_show_hit_rate = false;
-////
+
+////
//// Functions
////
-/// engine_name() returns the full name of the current Glaurung version.
-/// This will be either "Glaurung YYMMDD" (where YYMMDD is the date when the
-/// program was compiled) or "Glaurung <version number>", depending on whether
+void dbg_hit_on(bool b) {
+
+ assert(!dbg_show_mean);
+ dbg_show_hit_rate = true;
+ dbg_cnt0++;
+ if (b)
+ dbg_cnt1++;
+}
+
+void dbg_hit_on_c(bool c, bool b) {
+
+ if (c)
+ dbg_hit_on(b);
+}
+
+void dbg_before() {
+
+ assert(!dbg_show_mean);
+ dbg_show_hit_rate = true;
+ dbg_cnt0++;
+}
+
+void dbg_after() {
+
+ assert(!dbg_show_mean);
+ dbg_show_hit_rate = true;
+ dbg_cnt1++;
+}
+
+void dbg_mean_of(int v) {
+
+ assert(!dbg_show_hit_rate);
+ dbg_show_mean = true;
+ dbg_cnt0++;
+ dbg_cnt1 += v;
+}
+
+void dbg_print_hit_rate() {
+
+ cout << "Total " << dbg_cnt0 << " Hit " << dbg_cnt1
+ << " hit rate (%) " << (dbg_cnt1*100)/(dbg_cnt0 ? dbg_cnt0 : 1) << endl;
+}
+
+void dbg_print_mean() {
+
+ cout << "Total " << dbg_cnt0 << " Mean "
+ << (float)dbg_cnt1 / (dbg_cnt0 ? dbg_cnt0 : 1) << endl;
+}
+
+void dbg_print_hit_rate(ofstream& logFile) {
+
+ logFile << "Total " << dbg_cnt0 << " Hit " << dbg_cnt1
+ << " hit rate (%) " << (dbg_cnt1*100)/(dbg_cnt0 ? dbg_cnt0 : 1) << endl;
+}
+
+void dbg_print_mean(ofstream& logFile) {
+
+ logFile << "Total " << dbg_cnt0 << " Mean "
+ << (float)dbg_cnt1 / (dbg_cnt0 ? dbg_cnt0 : 1) << endl;
+}
+
+/// engine_name() returns the full name of the current Stockfish version.
+/// This will be either "Stockfish YYMMDD" (where YYMMDD is the date when the
+/// program was compiled) or "Stockfish <version number>", depending on whether
/// the constant EngineVersion (defined in misc.h) is empty.
-const std::string engine_name() {
- if(EngineVersion == "") {
- static const char monthNames[12][4] = {
- "Jan","Feb","Mar","Apr","May","Jun","Jul","Aug","Sep","Oct","Nov","Dec"
- };
- const char *dateString = __DATE__;
- std::stringstream s;
- int month = 0, day = 0;
-
- for(int i = 0; i < 12; i++)
- if(strncmp(dateString, monthNames[i], 3) == 0)
- month = i + 1;
- day = atoi(dateString+4);
-
- s << "Glaurung " << (dateString+9) << std::setfill('0') << std::setw(2)
- << month << std::setfill('0') << std::setw(2) << day;
-
- return s.str();
- }
- else
- return "Glaurung " + EngineVersion;
+const string engine_name() {
+
+ const string cpu64(CpuHas64BitPath ? " 64bit" : "");
+
+ if (!EngineVersion.empty())
+ return AppName+ " " + EngineVersion + cpu64;
+
+ string date(__DATE__); // From compiler, format is "Sep 21 2008"
+ string months("Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec");
+
+ size_t mon = 1 + months.find(date.substr(0, 3)) / 4;
+
+ stringstream s;
+ string day = (date[4] == ' ' ? date.substr(5, 1) : date.substr(4, 2));
+
+ string name = AppName + " " + AppTag + " ";
+
+ s << name << date.substr(date.length() - 2) << setfill('0')
+ << setw(2) << mon << setw(2) << day << cpu64;
+
+ return s.str();
}
/// milliseconds.
int get_system_time() {
- struct timeval t;
- gettimeofday(&t, NULL);
- return t.tv_sec*1000 + t.tv_usec/1000;
+
+#if defined(_MSC_VER)
+ struct _timeb t;
+ _ftime(&t);
+ return int(t.time*1000 + t.millitm);
+#else
+ struct timeval t;
+ gettimeofday(&t, NULL);
+ return t.tv_sec*1000 + t.tv_usec/1000;
+#endif
}
-/// cpu_count() tries to detect the number of CPU cores.
+/// builtin_cpu_count() tries to detect the number of CPU cores, if
+/// hyper-threading is enabled this is the number of logical processors.
#if !defined(_MSC_VER)
# if defined(_SC_NPROCESSORS_ONLN)
-int cpu_count() {
+static int builtin_cpu_count() {
return Min(sysconf(_SC_NPROCESSORS_ONLN), 8);
}
+# elif defined(__hpux)
+static int builtin_cpu_count() {
+ struct pst_dynamic psd;
+ if (pstat_getdynamic(&psd, sizeof(psd), (size_t)1, 0) == -1)
+ return 1;
+
+ return Min(psd.psd_proc_cnt, 8);
+}
# else
-int cpu_count() {
+static int builtin_cpu_count() {
return 1;
}
# endif
#else
-int cpu_count() {
+static int builtin_cpu_count() {
SYSTEM_INFO s;
GetSystemInfo(&s);
return Min(s.dwNumberOfProcessors, 8);
#endif
+/// HT_enabled() returns true if hyper-threading is enabled on current machine
+
+static bool HT_enabled() {
+
+ int CPUInfo[4] = {-1};
+ int nIds, nLogicalCPU, nCores;
+
+ // Detect CPU producer
+ __cpuid(CPUInfo, 0);
+ nIds = CPUInfo[0];
+
+ // Not an Intel CPU or CPUID.4 not supported
+ if (!((CPUInfo[1] == 'uneG') && (CPUInfo[3] == 'Ieni') && (CPUInfo[2] == 'letn')) || nIds < 4)
+ return false;
+
+ // Detect if HT Technology is supported
+ __cpuid(CPUInfo, 1);
+ if (!((CPUInfo[3] >> 28) & 1))
+ return false;
+
+ nLogicalCPU = (CPUInfo[1] >> 16) & 0xFF;
+
+ // Detect number of cores
+ __cpuid(CPUInfo, 4);
+ nCores = 1 + ((CPUInfo[0] >> 26) & 0x3F);
+
+ return nLogicalCPU > nCores;
+}
+
+
+/// cpu_count() tries to detect the number of physical CPU cores taking
+/// in account hyper-threading.
+
+int cpu_count() {
+
+ return HT_enabled() ? builtin_cpu_count() / 2 : builtin_cpu_count();
+}
+
+
/*
From Beowulf, from Olithink
*/
{
fd_set readfds;
struct timeval timeout;
-
+
FD_ZERO(&readfds);
FD_SET(fileno(stdin), &readfds);
/* Set to timeout immediately */
timeout.tv_sec = 0;
timeout.tv_usec = 0;
select(16, &readfds, 0, 0, &timeout);
-
+
return (FD_ISSET(fileno(stdin), &readfds));
}
return 1;
return dw;
} else {
+ // Count the number of unread input records, including keyboard,
+ // mouse, and window-resizing input records.
GetNumberOfConsoleInputEvents(inh, &dw);
- return dw <= 1 ? 0 : dw;
+ if (dw <= 0)
+ return 0;
+
+ // Read data from console without removing it from the buffer
+ INPUT_RECORD rec[256];
+ DWORD recCnt;
+ if (!PeekConsoleInput(inh, rec, Min(dw, 256), &recCnt))
+ return 0;
+
+ // Search for at least one keyboard event
+ for (DWORD i = 0; i < recCnt; i++)
+ if (rec[i].EventType == KEY_EVENT)
+ return 1;
+
+ return 0;
}
}
#endif
projects / stockfish / blobdiff