X-Git-Url: https://git.sesse.net/?p=stockfish;a=blobdiff_plain;f=src%2Fmisc.cpp;h=5912514c23dbadaf63133281c130497fe3a63a72;hp=07d58d637fb9fbc33b33509ed3212ca3b6246011;hb=c2d42ea8339b49e52a116e488214a14fda09d413;hpb=ea7bebb604ef1fc8b1de45f38a604fad590b52f5 diff --git a/src/misc.cpp b/src/misc.cpp index 07d58d63..5912514c 100644 --- a/src/misc.cpp +++ b/src/misc.cpp @@ -1,13 +1,14 @@ /* - 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. @@ -16,183 +17,210 @@ along with this program. If not, see . */ +#if defined(_MSC_VER) -//// -//// Includes -//// +#define _CRT_SECURE_NO_DEPRECATE +#define NOMINMAX // disable macros min() and max() +#include +#include -#if !defined(_MSC_VER) +#else # include # include # include +# if defined(__hpux) +# include +# endif -#else - -# include -# include -# include "dos.h" -int gettimeofday(struct timeval * tp, struct timezone * tzp); +#endif +#if !defined(NO_PREFETCH) +# include #endif +#include #include #include #include #include +#include +#include "bitcount.h" #include "misc.h" +#include "thread.h" +using namespace std; -//// -//// Variables -//// +/// Version number. If EngineVersion is left empty, then AppTag plus +/// current date (in the format YYMMDD) is used as a version number. -long dbg_cnt0 = 0; -long dbg_cnt1 = 0; +static const string AppName = "Stockfish"; +static const string EngineVersion = ""; +static const string AppTag = ""; -//// -//// Functions -//// +/// 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 ", depending +/// on whether the constant EngineVersion is empty. -void dbg_print_hit_rate() { +const string engine_name() { + + const string months("Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec"); + const string cpu64(CpuIs64Bit ? " 64bit" : ""); - std::cout << "Total " << dbg_cnt0 << " Hit " << dbg_cnt1 - << " hit rate (%) " << (dbg_cnt1*100)/(dbg_cnt0 ? dbg_cnt0 : 1) - << std::endl; + if (!EngineVersion.empty()) + return AppName + " " + EngineVersion + cpu64; + + stringstream s, date(__DATE__); // From compiler, format is "Sep 21 2008" + string month, day, year; + + 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(); } -/// 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 ", depending on whether -/// the constant EngineVersion (defined in misc.h) is empty. -const std::string engine_name() { +/// Our brave developers! Required by UCI + +const string engine_authors() { + + return "Tord Romstad, Marco Costalba and Joona Kiiski"; +} - 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"); - size_t mon = 1 + months.find(date.substr(0, 3)) / 4; +/// Debug stuff. Helper functions used mainly for debugging purposes - std::stringstream s; - std::string day = (date[4] == ' ' ? date.substr(5, 1) : date.substr(4, 2)); +static uint64_t dbg_hit_cnt0; +static uint64_t dbg_hit_cnt1; +static uint64_t dbg_mean_cnt0; +static uint64_t dbg_mean_cnt1; - s << "Glaurung clone " << date.substr(date.length() - 2) << std::setfill('0') - << std::setw(2) << mon << std::setw(2) << day; +void dbg_print_hit_rate() { + + 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_mean() { + + if (dbg_mean_cnt0) + cerr << "Total " << dbg_mean_cnt0 << " Mean " + << (float)dbg_mean_cnt1 / dbg_mean_cnt0 << endl; +} + +void dbg_mean_of(int v) { + + dbg_mean_cnt0++; + dbg_mean_cnt1 += v; +} + +void dbg_hit_on(bool b) { - return s.str(); - } else - return "Glaurung clone " + EngineVersion; + 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--; } + + +/// system_time() returns the current system time, measured in milliseconds -/// get_system_time() returns the current system time, measured in -/// milliseconds. +int system_time() { -int get_system_time() { +#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; + return t.tv_sec * 1000 + t.tv_usec / 1000; +#endif } -/// cpu_count() tries to detect the number of CPU cores. +/// cpu_count() tries to detect the number of CPU cores + +int cpu_count() { -#if !defined(_MSC_VER) +#if defined(_MSC_VER) + SYSTEM_INFO s; + GetSystemInfo(&s); + return std::min(int(s.dwNumberOfProcessors), MAX_THREADS); +#else # if defined(_SC_NPROCESSORS_ONLN) -int cpu_count() { - return Min(sysconf(_SC_NPROCESSORS_ONLN), 8); -} + return std::min((int)sysconf(_SC_NPROCESSORS_ONLN), MAX_THREADS); +# elif defined(__hpux) + struct pst_dynamic psd; + if (pstat_getdynamic(&psd, sizeof(psd), (size_t)1, 0) == -1) + return 1; + return std::min((int)psd.psd_proc_cnt, MAX_THREADS); # else -int cpu_count() { 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(_MSC_VER) + int tm = msec; #else + struct timeval t; + struct timespec abstime, *tm = &abstime; -int cpu_count() { - SYSTEM_INFO s; - GetSystemInfo(&s); - return Min(s.dwNumberOfProcessors, 8); -} + gettimeofday(&t, NULL); -#endif + 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 -/* - From Beowulf, from Olithink -*/ -#ifndef _WIN32 -/* Non-windows version */ -int Bioskey() -{ - 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)); + 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. +#if defined(NO_PREFETCH) + +void prefetch(char*) {} + #else -/* Windows-version */ -#include -#include -int Bioskey() -{ - static int init = 0, - pipe; - static HANDLE inh; - DWORD dw; - /* If we're running under XBoard then we can't use _kbhit() as the input - * commands are sent to us directly over the internal pipe */ - -#if defined(FILE_CNT) - if (stdin->_cnt > 0) - return stdin->_cnt; + +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 - if (!init) { - init = 1; - inh = GetStdHandle(STD_INPUT_HANDLE); - pipe = !GetConsoleMode(inh, &dw); - if (!pipe) { - SetConsoleMode(inh, dw & ~(ENABLE_MOUSE_INPUT | ENABLE_WINDOW_INPUT)); - FlushConsoleInputBuffer(inh); - } - } - if (pipe) { - if (!PeekNamedPipe(inh, NULL, 0, NULL, &dw, NULL)) - return 1; - return dw; - } else { - // Count the number of unread input records, including keyboard, - // mouse, and window-resizing input records. - GetNumberOfConsoleInputEvents(inh, &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; - } + + _mm_prefetch(addr, _MM_HINT_T2); + _mm_prefetch(addr+64, _MM_HINT_T2); // 64 bytes ahead } + #endif