X-Git-Url: https://git.sesse.net/?p=stockfish;a=blobdiff_plain;f=src%2Fmisc.cpp;h=08df524bf26beb5bed4453910cc161b1ed8364a3;hp=60c6c3ba8ef323f4d2c4ad57bcb5b30bd811101c;hb=1d09ee70f7da1f9aa60c7ff97a35881327f69a03;hpb=e0a8b364364c2a89c82d4f57fd3419ed5f1f872e diff --git a/src/misc.cpp b/src/misc.cpp index 60c6c3ba..08df524b 100644 --- a/src/misc.cpp +++ b/src/misc.cpp @@ -1,7 +1,8 @@ /* Stockfish, a UCI chess playing engine derived from Glaurung 2.1 Copyright (C) 2004-2008 Tord Romstad (Glaurung author) - Copyright (C) 2008-2009 Marco Costalba + Copyright (C) 2008-2015 Marco Costalba, Joona Kiiski, Tord Romstad + Copyright (C) 2015-2016 Marco Costalba, Joona Kiiski, Gary Linscott, 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 @@ -17,262 +18,170 @@ along with this program. If not, see . */ - -//// -//// Includes -//// - -#if !defined(_MSC_VER) - -# include -# include -# include - -#else - -#define _CRT_SECURE_NO_DEPRECATE -#include -#include - -#endif - -#include -#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 = "1.6.2"; -static const string AppName = "Stockfish"; -static const string AppTag = ""; - +namespace { -//// -//// Variables -//// +/// Version number. If Version is left empty, then compile date in the format +/// DD-MM-YY and show in engine_info. +const string Version = ""; -bool Chess960; +/// Our fancy logging facility. The trick here is to replace cin.rdbuf() and +/// cout.rdbuf() with two Tie objects that tie cin and cout to a file stream. We +/// can toggle the logging of std::cout and std:cin at runtime whilst preserving +/// usual I/O functionality, all without changing a single line of code! +/// Idea from http://groups.google.com/group/comp.lang.c++/msg/1d941c0f26ea0d81 -uint64_t dbg_cnt0 = 0; -uint64_t dbg_cnt1 = 0; +struct Tie: public streambuf { // MSVC requires split streambuf for cin and cout -bool dbg_show_mean = false; -bool dbg_show_hit_rate = false; + Tie(streambuf* b, streambuf* l) : buf(b), logBuf(l) {} + int sync() { return logBuf->pubsync(), buf->pubsync(); } + int overflow(int c) { return log(buf->sputc((char)c), "<< "); } + int underflow() { return buf->sgetc(); } + int uflow() { return log(buf->sbumpc(), ">> "); } -//// -//// Functions -//// + streambuf *buf, *logBuf; -void dbg_hit_on(bool b) { + int log(int c, const char* prefix) { - assert(!dbg_show_mean); - dbg_show_hit_rate = true; - dbg_cnt0++; - if (b) - dbg_cnt1++; -} + static int last = '\n'; // Single log file -void dbg_hit_on_c(bool c, bool b) { + if (last == '\n') + logBuf->sputn(prefix, 3); - if (c) - dbg_hit_on(b); -} + return last = logBuf->sputc((char)c); + } +}; -void dbg_before() { +class Logger { - assert(!dbg_show_mean); - dbg_show_hit_rate = true; - dbg_cnt0++; -} + Logger() : in(cin.rdbuf(), file.rdbuf()), out(cout.rdbuf(), file.rdbuf()) {} + ~Logger() { start(""); } -void dbg_after() { + ofstream file; + Tie in, out; - assert(!dbg_show_mean); - dbg_show_hit_rate = true; - dbg_cnt1++; -} +public: + static void start(const std::string& fname) { -void dbg_mean_of(int v) { + static Logger l; - assert(!dbg_show_hit_rate); - dbg_show_mean = true; - dbg_cnt0++; - dbg_cnt1 += v; -} + if (!fname.empty() && !l.file.is_open()) + { + l.file.open(fname, ifstream::out); + cin.rdbuf(&l.in); + cout.rdbuf(&l.out); + } + else if (fname.empty() && l.file.is_open()) + { + cout.rdbuf(l.out.buf); + cin.rdbuf(l.in.buf); + l.file.close(); + } + } +}; -void dbg_print_hit_rate() { +} // namespace - cout << "Total " << dbg_cnt0 << " Hit " << dbg_cnt1 - << " hit rate (%) " << (dbg_cnt1*100)/(dbg_cnt0 ? dbg_cnt0 : 1) << endl; -} +/// engine_info() returns the full name of the current Stockfish version. This +/// will be either "Stockfish DD-MM-YY" (where DD-MM-YY is the date when +/// the program was compiled) or "Stockfish ", depending on whether +/// Version is empty. -void dbg_print_mean() { +const string engine_info(bool to_uci) { - cout << "Total " << dbg_cnt0 << " Mean " - << (float)dbg_cnt1 / (dbg_cnt0 ? dbg_cnt0 : 1) << endl; -} + const string months("Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec"); + string month, day, year; + stringstream ss, date(__DATE__); // From compiler, format is "Sep 21 2008" -void dbg_print_hit_rate(ofstream& logFile) { + ss << "Stockfish " << Version << setfill('0'); - logFile << "Total " << dbg_cnt0 << " Hit " << dbg_cnt1 - << " hit rate (%) " << (dbg_cnt1*100)/(dbg_cnt0 ? dbg_cnt0 : 1) << endl; -} + if (Version.empty()) + { + date >> month >> day >> year; + ss << setw(2) << day << setw(2) << (1 + months.find(month) / 4) << year.substr(2); + } -void dbg_print_mean(ofstream& logFile) { + ss << (Is64Bit ? " 64" : "") + << (HasPext ? " BMI2" : (HasPopCnt ? " POPCNT" : "")) + << (to_uci ? "\nid author ": " by ") + << "T. Romstad, M. Costalba, J. Kiiski, G. Linscott"; - logFile << "Total " << dbg_cnt0 << " Mean " - << (float)dbg_cnt1 / (dbg_cnt0 ? dbg_cnt0 : 1) << endl; + return ss.str(); } -/// 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. - -const string engine_name() { - const string cpu64(CpuHas64BitPath ? " 64bit" : ""); +/// Debug functions used mainly to collect run-time statistics +static int64_t hits[2], means[2]; - if (!EngineVersion.empty()) - return AppName+ " " + EngineVersion + cpu64; +void dbg_hit_on(bool b) { ++hits[0]; if (b) ++hits[1]; } +void dbg_hit_on(bool c, bool b) { if (c) dbg_hit_on(b); } +void dbg_mean_of(int v) { ++means[0]; means[1] += v; } - string date(__DATE__); // From compiler, format is "Sep 21 2008" - string months("Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec"); +void dbg_print() { - size_t mon = 1 + months.find(date.substr(0, 3)) / 4; + if (hits[0]) + cerr << "Total " << hits[0] << " Hits " << hits[1] + << " hit rate (%) " << 100 * hits[1] / hits[0] << endl; - stringstream s; - string day = (date[4] == ' ' ? date.substr(5, 1) : date.substr(4, 2)); + if (means[0]) + cerr << "Total " << means[0] << " Mean " + << (double)means[1] / means[0] << endl; +} - string name = AppName + " " + AppTag + " "; - s << name << date.substr(date.length() - 2) << setfill('0') - << setw(2) << mon << setw(2) << day << cpu64; +/// Used to serialize access to std::cout to avoid multiple threads writing at +/// the same time. - return s.str(); -} +std::ostream& operator<<(std::ostream& os, SyncCout sc) { + static Mutex m; -/// get_system_time() returns the current system time, measured in -/// milliseconds. + if (sc == IO_LOCK) + m.lock(); -int get_system_time() { + if (sc == IO_UNLOCK) + m.unlock(); -#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 + return os; } -/// cpu_count() tries to detect the number of CPU cores. +/// Trampoline helper to avoid moving Logger to misc.h +void start_logger(const std::string& fname) { Logger::start(fname); } -#if !defined(_MSC_VER) -# if defined(_SC_NPROCESSORS_ONLN) -int cpu_count() { - return Min(sysconf(_SC_NPROCESSORS_ONLN), 8); -} -# else -int cpu_count() { - return 1; -} -# endif +/// prefetch() preloads the given address in L1/L2 cache. This is a non-blocking +/// function that doesn't stall the CPU waiting for data to be loaded from memory, +/// which can be quite slow. +#ifdef NO_PREFETCH -#else +void prefetch(void*) {} -int cpu_count() { - SYSTEM_INFO s; - GetSystemInfo(&s); - return Min(s.dwNumberOfProcessors, 8); -} +#else -#endif +void prefetch(void* addr) { +# if defined(__INTEL_COMPILER) + // This hack prevents prefetches from being optimized away by + // Intel compiler. Both MSVC and gcc seem not be affected by this. + __asm__ (""); +# 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)); +# if defined(__INTEL_COMPILER) || defined(_MSC_VER) + _mm_prefetch((char*)addr, _MM_HINT_T0); +# else + __builtin_prefetch(addr); +# endif } -#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; -#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; - } -} #endif