X-Git-Url: https://git.sesse.net/?p=stockfish;a=blobdiff_plain;f=src%2Fmisc.cpp;h=d18f48d6e8a7c24a1c4eb7c679cb770e8af4717b;hp=8c2fc28a344dd929a6d023cfb1fb9002d41aa6bc;hb=4fa0395eb8db33b23c2a91e4b255021fd940d811;hpb=a6017aa728c12c48faf758e6df3b3a1e2b704dad diff --git a/src/misc.cpp b/src/misc.cpp index 8c2fc28a..d18f48d6 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. @@ -26,30 +27,48 @@ # include # include # include +# if defined(__hpux) +# include +# endif #else -# include -# include -# include "dos.h" -int gettimeofday(struct timeval * tp, struct timezone * tzp); +#define _CRT_SECURE_NO_DEPRECATE +#include +#include + +#endif +#if !defined(NO_PREFETCH) +# include #endif +#include #include #include #include #include +#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; +static uint64_t dbg_cnt0 = 0; +static uint64_t dbg_cnt1 = 0; bool dbg_show_mean = false; bool dbg_show_hit_rate = false; @@ -59,42 +78,80 @@ 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() { - std::cout << "Total " << dbg_cnt0 << " Mean " - << (float)dbg_cnt1 / (dbg_cnt0 ? dbg_cnt0 : 1) << std::endl; + 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 ", depending on whether -/// the constant EngineVersion (defined in misc.h) is empty. -const std::string engine_name() { +/// 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 (defined in misc.h) is empty. - 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"); +const string engine_name() { - size_t mon = 1 + months.find(date.substr(0, 3)) / 4; + const string months("Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec"); + const string cpu64(CpuIs64Bit ? " 64bit" : ""); - std::stringstream s; - std::string day = (date[4] == ' ' ? date.substr(5, 1) : date.substr(4, 2)); + if (!EngineVersion.empty()) + return AppName + " " + EngineVersion + cpu64; - s << "Glaurung clone " << date.substr(date.length() - 2) << std::setfill('0') - << std::setw(2) << mon << std::setw(2) << day; + stringstream s, date(__DATE__); // From compiler, format is "Sep 21 2008" + string month, day, year; - return s.str(); - } else - return "Glaurung clone " + EngineVersion; + 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(); } @@ -102,9 +159,16 @@ const std::string engine_name() { /// 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 } @@ -114,7 +178,15 @@ int get_system_time() { # 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() { @@ -127,26 +199,24 @@ int cpu_count() { int cpu_count() { SYSTEM_INFO s; GetSystemInfo(&s); - return Min(s.dwNumberOfProcessors, 8); + return Min(s.dwNumberOfProcessors, MAX_THREADS); } #endif -/* - From Beowulf, from Olithink -*/ +/// Check for console input. Original code from Beowulf and Olithink + #ifndef _WIN32 -/* Non-windows version */ -int Bioskey() + +int data_available() { - fd_set readfds; + fd_set readfds; struct timeval timeout; FD_ZERO(&readfds); FD_SET(fileno(stdin), &readfds); - /* Set to timeout immediately */ - timeout.tv_sec = 0; + timeout.tv_sec = 0; // Set to timeout immediately timeout.tv_usec = 0; select(16, &readfds, 0, 0, &timeout); @@ -154,54 +224,67 @@ int Bioskey() } #else -/* Windows-version */ -#include -#include -int Bioskey() + +int data_available() { - 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; -#endif - if (!init) { - init = 1; + static HANDLE inh = NULL; + static bool usePipe = false; + INPUT_RECORD rec[256]; + DWORD dw, recCnt; + + if (!inh) + { inh = GetStdHandle(STD_INPUT_HANDLE); - pipe = !GetConsoleMode(inh, &dw); - if (!pipe) { + if (GetConsoleMode(inh, &dw)) + { SetConsoleMode(inh, dw & ~(ENABLE_MOUSE_INPUT | ENABLE_WINDOW_INPUT)); FlushConsoleInputBuffer(inh); - } + } else + usePipe = true; } - 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; + // If we're running under XBoard then we can't use PeekConsoleInput() as + // the input commands are sent to us directly over the internal pipe. + if (usePipe) + return PeekNamedPipe(inh, NULL, 0, NULL, &dw, NULL) ? dw : 1; + + // Count the number of unread input records, including keyboard, + // mouse, and window-resizing input records. + GetNumberOfConsoleInputEvents(inh, &dw); + + // Read data from console without removing it from the buffer + if (dw <= 0 || !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 + + +/// 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 +