/*
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
+ Copyright (C) 2008-2012 Marco Costalba, Joona Kiiski, Tord Romstad
Stockfish is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
-#if !defined(_MSC_VER)
+#if defined(_MSC_VER)
+
+#define _CRT_SECURE_NO_DEPRECATE
+#define NOMINMAX // disable macros min() and max()
+#include <windows.h>
+#include <sys/timeb.h>
+
+#else
# include <sys/time.h>
# include <sys/types.h>
# include <sys/pstat.h>
# endif
-#else
-
-#define _CRT_SECURE_NO_DEPRECATE
-#define NOMINMAX // disable macros min() and max()
-#include <windows.h>
-#include <sys/timeb.h>
-
#endif
#if !defined(NO_PREFETCH)
# include <xmmintrin.h>
#endif
-#include <cassert>
-#include <cstdio>
+#include <algorithm>
#include <iomanip>
#include <iostream>
#include <sstream>
-#include <algorithm>
-#include "bitcount.h"
#include "misc.h"
#include "thread.h"
using namespace std;
-/// Version number. If EngineVersion is left empty, then AppTag plus
-/// current date (in the format YYMMDD) is used as a version number.
+/// Version number. If Version is left empty, then Tag plus current
+/// date (in the format YYMMDD) is used as a version number.
-static const string AppName = "Stockfish";
-static const string EngineVersion = "";
-static const string AppTag = "";
+static const string Version = "";
+static const string Tag = "";
-/// engine_name() returns the full name of the current Stockfish version.
+/// engine_info() 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 is empty.
+/// on whether Version is empty.
-const string engine_name() {
+const string engine_info(bool to_uci) {
const string months("Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec");
- const string cpu64(CpuIs64Bit ? " 64bit" : "");
+ const string cpu64(Is64Bit ? " 64bit" : "");
+ const string popcnt(HasPopCnt ? " SSE4.2" : "");
- if (!EngineVersion.empty())
- return AppName + " " + EngineVersion + cpu64;
-
- stringstream s, date(__DATE__); // From compiler, format is "Sep 21 2008"
string month, day, year;
+ stringstream s, date(__DATE__); // From compiler, format is "Sep 21 2008"
- date >> month >> day >> year;
-
- s << setfill('0') << AppName + " " + AppTag + " "
- << year.substr(2, 2) << setw(2)
- << (1 + months.find(month) / 4) << setw(2)
- << day << cpu64;
-
- return s.str();
-}
-
+ if (Version.empty())
+ {
+ date >> month >> day >> year;
-/// Our brave developers! Required by UCI
+ s << "Stockfish " << Tag
+ << setfill('0') << " " << year.substr(2)
+ << setw(2) << (1 + months.find(month) / 4)
+ << setw(2) << day << cpu64 << popcnt;
+ }
+ else
+ s << "Stockfish " << Version << cpu64 << popcnt;
-const string engine_authors() {
+ s << (to_uci ? "\nid author ": " by ")
+ << "Tord Romstad, Marco Costalba and Joona Kiiski";
- return "Tord Romstad, Marco Costalba and Joona Kiiski";
+ return s.str();
}
-/// Debug stuff. Helper functions used mainly for debugging purposes
+/// Debug functions used mainly to collect run-time statistics
-static uint64_t dbg_hit_cnt0;
-static uint64_t dbg_hit_cnt1;
-static uint64_t dbg_mean_cnt0;
-static uint64_t dbg_mean_cnt1;
+static uint64_t hits[2], means[2];
-void dbg_print_hit_rate() {
+void dbg_hit_on(bool b) { hits[0]++; if (b) hits[1]++; }
+void dbg_hit_on_c(bool c, bool b) { if (c) dbg_hit_on(b); }
+void dbg_mean_of(int v) { means[0]++; means[1] += v; }
- if (dbg_hit_cnt0)
- cerr << "Total " << dbg_hit_cnt0 << " Hit " << dbg_hit_cnt1
- << " hit rate (%) " << 100 * dbg_hit_cnt1 / dbg_hit_cnt0 << endl;
-}
+void dbg_print() {
-void dbg_print_mean() {
+ if (hits[0])
+ cerr << "Total " << hits[0] << " Hits " << hits[1]
+ << " hit rate (%) " << 100 * hits[1] / hits[0] << endl;
- if (dbg_mean_cnt0)
- cerr << "Total " << dbg_mean_cnt0 << " Mean "
- << (float)dbg_mean_cnt1 / dbg_mean_cnt0 << endl;
+ if (means[0])
+ cerr << "Total " << means[0] << " Mean "
+ << (float)means[1] / means[0] << endl;
}
-void dbg_mean_of(int v) {
-
- dbg_mean_cnt0++;
- dbg_mean_cnt1 += v;
-}
-void dbg_hit_on(bool b) {
+/// system_time() returns the current system time, measured in milliseconds
- dbg_hit_cnt0++;
- if (b)
- dbg_hit_cnt1++;
-}
-
-void dbg_hit_on_c(bool c, bool b) { if (c) dbg_hit_on(b); }
-void dbg_before() { dbg_hit_on(false); }
-void dbg_after() { dbg_hit_on(true); dbg_hit_cnt0--; }
-
-
-/// get_system_time() returns the current system time, measured in milliseconds
-
-int get_system_time() {
+int system_time() {
#if defined(_MSC_VER)
struct _timeb t;
}
+/// timed_wait() waits for msec milliseconds. It is mainly an helper to wrap
+/// conversion from milliseconds to struct timespec, as used by pthreads.
+
+void timed_wait(WaitCondition* sleepCond, Lock* sleepLock, int msec) {
+
+#if defined(_MSC_VER)
+ int tm = msec;
+#else
+ struct timeval t;
+ struct timespec abstime, *tm = &abstime;
+
+ gettimeofday(&t, NULL);
+
+ abstime.tv_sec = t.tv_sec + (msec / 1000);
+ abstime.tv_nsec = (t.tv_usec + (msec % 1000) * 1000) * 1000;
+
+ if (abstime.tv_nsec > 1000000000LL)
+ {
+ abstime.tv_sec += 1;
+ abstime.tv_nsec -= 1000000000LL;
+ }
+#endif
+
+ cond_timedwait(sleepCond, sleepLock, tm);
+}
+
+
/// 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 memory, that can be quite slow.
void prefetch(char* addr) {
-#if defined(__INTEL_COMPILER) || defined(__ICL)
+# 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
+# endif
_mm_prefetch(addr, _MM_HINT_T2);
_mm_prefetch(addr+64, _MM_HINT_T2); // 64 bytes ahead
projects / stockfish / blobdiff