/*
- 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.
# 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
+#if !defined(NO_PREFETCH)
+# include <xmmintrin.h>
#endif
+#include <cassert>
#include <cstdio>
#include <iomanip>
#include <iostream>
#include <sstream>
+#include "bitcount.h"
#include "misc.h"
+#include "thread.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
////
-long dbg_cnt0 = 0;
-long dbg_cnt1 = 0;
+bool Chess960;
+
+uint64_t dbg_cnt0 = 0;
+uint64_t dbg_cnt1 = 0;
+
+bool dbg_show_mean = false;
+bool dbg_show_hit_rate = false;
////
//// Functions
////
+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() {
- std::cout << "Total " << dbg_cnt0 << " Hit " << dbg_cnt1
- << " hit rate (%) " << (dbg_cnt1*100)/(dbg_cnt0 ? dbg_cnt0 : 1)
- << std::endl;
+ 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;
}
-/// 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_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() {
+const string engine_name() {
+
+ const string cpu64(CpuHas64BitPath ? " 64bit" : "");
- if (EngineVersion.empty())
- {
- std::string date(__DATE__); // From compiler, format is "Sep 21 2008"
- std::string months("Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec");
+ if (!EngineVersion.empty())
+ return AppName+ " " + EngineVersion + cpu64;
- size_t mon = 1 + months.find(date.substr(0, 3)) / 4;
+ string date(__DATE__); // From compiler, format is "Sep 21 2008"
+ string months("Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec");
- std::stringstream s;
- s << "Glaurung " << date.substr(date.length() - 2) << std::setfill('0')
- << std::setw(2) << mon << date.substr(4, 2);
+ size_t mon = 1 + months.find(date.substr(0, 3)) / 4;
- return s.str();
- } else
- return "Glaurung " + EngineVersion;
+ 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
}
# if defined(_SC_NPROCESSORS_ONLN)
int cpu_count() {
- return Min(sysconf(_SC_NPROCESSORS_ONLN), 8);
+ return Min(sysconf(_SC_NPROCESSORS_ONLN), MAX_THREADS);
+}
+# elif defined(__hpux)
+int 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, MAX_THREADS);
}
# else
int cpu_count() {
int cpu_count() {
SYSTEM_INFO s;
GetSystemInfo(&s);
- return Min(s.dwNumberOfProcessors, 8);
+ return Min(s.dwNumberOfProcessors, MAX_THREADS);
}
#endif
return 0;
}
}
+
#endif
+
+/// prefetch() preloads the given address in L1/L2 cache. This is a non
+/// blocking function and do not stalls the CPU waiting for data to be
+/// loaded from RAM, that can be very slow.
+#if defined(NO_PREFETCH)
+void prefetch(char*) {}
+#else
+
+void prefetch(char* addr) {
+
+#if defined(__INTEL_COMPILER) || defined(__ICL)
+ // This hack prevents prefetches to be optimized away by
+ // Intel compiler. Both MSVC and gcc seems not affected.
+ __asm__ ("");
+#endif
+
+ _mm_prefetch(addr, _MM_HINT_T2);
+ _mm_prefetch(addr+64, _MM_HINT_T2); // 64 bytes ahead
+}
+
+#endif
+