/*
Stockfish, a UCI chess playing engine derived from Glaurung 2.1
Copyright (C) 2004-2008 Tord Romstad (Glaurung author)
- Copyright (C) 2008-2012 Marco Costalba, Joona Kiiski, Tord Romstad
+ Copyright (C) 2008-2013 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
#include "misc.h"
#include "thread.h"
-#if defined(__hpux)
-# include <sys/pstat.h>
-#endif
-
using namespace std;
-/// Version number. If Version is left empty, then Tag plus current
-/// date (in the format YYMMDD) is used as a version number.
-
+/// Version number. If Version is left empty, then compile date, in the
+/// format DD-MM-YY, is shown in engine_info.
static const string Version = "";
-static const string Tag = "";
-/// 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 Version is empty.
+/// engine_info() returns the full name of the current Stockfish version. This
+/// will be either "Stockfish <Tag> DD-MM-YY" (where DD-MM-YY is the date when
+/// the program was compiled) or "Stockfish <Version>", depending on whether
+/// Version is empty.
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(Is64Bit ? " 64bit" : "");
- const string popcnt(HasPopCnt ? " SSE4.2" : "");
-
string month, day, year;
stringstream s, date(__DATE__); // From compiler, format is "Sep 21 2008"
- s << "Stockfish " << Version;
+ s << "Stockfish " << Version << setfill('0');
if (Version.empty())
{
date >> month >> day >> year;
-
- s << Tag << setfill('0') << " " << year.substr(2)
- << setw(2) << (1 + months.find(month) / 4) << setw(2) << day;
+ s << setw(2) << day << setw(2) << (1 + months.find(month) / 4) << year.substr(2);
}
- s << cpu64 << popcnt << (to_uci ? "\nid author ": " by ")
+ s << (Is64Bit ? " 64" : "")
+ << (HasPopCnt ? " SSE4.2" : "")
+ << (to_uci ? "\nid author ": " by ")
<< "Tord Romstad, Marco Costalba and Joona Kiiski";
return s.str();
}
-/// Convert system time to milliseconds. That's all we need.
-
-Time::point Time::now() {
- sys_time_t t; system_time(&t); return time_to_msec(t);
-}
-
-
/// Debug functions used mainly to collect run-time statistics
static uint64_t hits[2], means[2];
void start_logger(bool b) { Logger::start(b); }
-/// cpu_count() tries to detect the number of CPU cores
-
-int cpu_count() {
-
-#if defined(_WIN32) || defined(_WIN64)
- SYSTEM_INFO s;
- GetSystemInfo(&s);
- return s.dwNumberOfProcessors;
-#else
-
-# if defined(_SC_NPROCESSORS_ONLN)
- return sysconf(_SC_NPROCESSORS_ONLN);
-# elif defined(__hpux)
- struct pst_dynamic psd;
- if (pstat_getdynamic(&psd, sizeof(psd), (size_t)1, 0) == -1)
- return 1;
- return psd.psd_proc_cnt;
-# else
- return 1;
-# endif
-
-#endif
-}
-
-
/// 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(_WIN32) || defined(_WIN64)
+#ifdef _WIN32
int tm = msec;
#else
timespec ts, *tm = &ts;
/// 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.
-#if defined(NO_PREFETCH)
+#ifdef NO_PREFETCH
void prefetch(char*) {}
#else
-# if defined(__INTEL_COMPILER) || defined(__ICL) || defined(_MSC_VER)
-# include <xmmintrin.h>
-# endif
-
void prefetch(char* addr) {
-# if defined(__INTEL_COMPILER) || defined(__ICL)
+# if defined(__INTEL_COMPILER)
// This hack prevents prefetches to be optimized away by
// Intel compiler. Both MSVC and gcc seems not affected.
__asm__ ("");
# endif
-# if defined(__INTEL_COMPILER) || defined(__ICL) || defined(_MSC_VER)
- _mm_prefetch(addr, _MM_HINT_T2);
- _mm_prefetch(addr+64, _MM_HINT_T2); // 64 bytes ahead
+# if defined(__INTEL_COMPILER) || defined(_MSC_VER)
+ _mm_prefetch(addr, _MM_HINT_T0);
# else
__builtin_prefetch(addr);
- __builtin_prefetch(addr+64);
# endif
}