X-Git-Url: https://git.sesse.net/?p=stockfish;a=blobdiff_plain;f=src%2Fmisc.cpp;h=49b41b2f73eec3b35113d79f7cc033e05855f33e;hp=c692e996f2ce2fa292e287119c4a9699086aacc4;hb=8a7876d48d4360d14d918c1ff444b5d6eb0382de;hpb=3701a8e57ded0876bd34ba1bc1afafc631ee059b diff --git a/src/misc.cpp b/src/misc.cpp index c692e996..0052f21e 100644 --- a/src/misc.cpp +++ b/src/misc.cpp @@ -1,7 +1,7 @@ /* 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) 2008-2014 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 @@ -17,262 +17,192 @@ 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. +namespace { -static const string EngineVersion = ""; -static const string AppName = "Stockfish"; -static const string AppTag = ""; +/// Version number. If Version is left empty, then compile date in the format +/// DD-MM-YY and show in engine_info. +const string Version = ""; +/// Debug counters +int64_t hits[2], means[2]; -//// -//// Variables -//// +/// 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 -bool Chess960; +struct Tie: public streambuf { // MSVC requires splitted streambuf for cin and cout -uint64_t dbg_cnt0 = 0; -uint64_t dbg_cnt1 = 0; + Tie(streambuf* b, ofstream* f) : buf(b), file(f) {} -bool dbg_show_mean = false; -bool dbg_show_hit_rate = false; + int sync() { return file->rdbuf()->pubsync(), buf->pubsync(); } + int overflow(int c) { return log(buf->sputc((char)c), "<< "); } + int underflow() { return buf->sgetc(); } + int uflow() { return log(buf->sbumpc(), ">> "); } + streambuf* buf; + ofstream* file; -//// -//// Functions -//// + int log(int c, const char* prefix) { -void dbg_hit_on(bool b) { + static int last = '\n'; - assert(!dbg_show_mean); - dbg_show_hit_rate = true; - dbg_cnt0++; - if (b) - dbg_cnt1++; -} + if (last == '\n') + file->rdbuf()->sputn(prefix, 3); -void dbg_hit_on_c(bool c, bool b) { + return last = file->rdbuf()->sputc((char)c); + } +}; - if (c) - dbg_hit_on(b); -} +class Logger { -void dbg_before() { + Logger() : in(cin.rdbuf(), &file), out(cout.rdbuf(), &file) {} + ~Logger() { start(false); } - assert(!dbg_show_mean); - dbg_show_hit_rate = true; - dbg_cnt0++; -} + ofstream file; + Tie in, out; -void dbg_after() { +public: + static void start(bool b) { - assert(!dbg_show_mean); - dbg_show_hit_rate = true; - dbg_cnt1++; -} + static Logger l; -void dbg_mean_of(int v) { + if (b && !l.file.is_open()) + { + l.file.open("io_log.txt", ifstream::out | ifstream::app); + cin.rdbuf(&l.in); + cout.rdbuf(&l.out); + } + else if (!b && l.file.is_open()) + { + cout.rdbuf(l.out.buf); + cin.rdbuf(l.in.buf); + l.file.close(); + } + } +}; - assert(!dbg_show_hit_rate); - dbg_show_mean = true; - dbg_cnt0++; - dbg_cnt1 += v; -} +} // namespace -void dbg_print_hit_rate() { +/// 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. - cout << "Total " << dbg_cnt0 << " Hit " << dbg_cnt1 - << " hit rate (%) " << (dbg_cnt1*100)/(dbg_cnt0 ? dbg_cnt0 : 1) << endl; -} +const string engine_info(bool to_uci) { -void dbg_print_mean() { + 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" - cout << "Total " << dbg_cnt0 << " Mean " - << (float)dbg_cnt1 / (dbg_cnt0 ? dbg_cnt0 : 1) << endl; -} + ss << "Stockfish " << Version << setfill('0'); + + if (Version.empty()) + { + date >> month >> day >> year; + ss << setw(2) << day << setw(2) << (1 + months.find(month) / 4) << year.substr(2); + } -void dbg_print_hit_rate(ofstream& logFile) { + ss << (Is64Bit ? " 64" : "") + << (HasPext ? " BMI2" : (HasPopCnt ? " SSE4.2" : "")) + << (to_uci ? "\nid author ": " by ") + << "Tord Romstad, Marco Costalba and Joona Kiiski"; - logFile << "Total " << dbg_cnt0 << " Hit " << dbg_cnt1 - << " hit rate (%) " << (dbg_cnt1*100)/(dbg_cnt0 ? dbg_cnt0 : 1) << endl; + return ss.str(); } -void dbg_print_mean(ofstream& logFile) { - logFile << "Total " << dbg_cnt0 << " Mean " - << (float)dbg_cnt1 / (dbg_cnt0 ? dbg_cnt0 : 1) << endl; -} +/// Debug functions used mainly to collect run-time statistics -/// 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. +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; } -const string engine_name() { +void dbg_print() { - const string cpu64(CpuHas64BitPath ? " 64bit" : ""); + if (hits[0]) + cerr << "Total " << hits[0] << " Hits " << hits[1] + << " hit rate (%) " << 100 * hits[1] / hits[0] << endl; + + if (means[0]) + cerr << "Total " << means[0] << " Mean " + << (double)means[1] / means[0] << endl; +} - if (!EngineVersion.empty()) - return AppName+ " " + EngineVersion + cpu64; - string date(__DATE__); // From compiler, format is "Sep 21 2008" - string months("Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec"); +/// Used to serialize access to std::cout to avoid multiple threads writing at +/// the same time. - size_t mon = 1 + months.find(date.substr(0, 3)) / 4; +std::ostream& operator<<(std::ostream& os, SyncCout sc) { - stringstream s; - string day = (date[4] == ' ' ? date.substr(5, 1) : date.substr(4, 2)); + static Mutex m; - string name = AppName + " " + AppTag + " "; + if (sc == IO_LOCK) + m.lock(); - s << name << date.substr(date.length() - 2) << setfill('0') - << setw(2) << mon << setw(2) << day << cpu64; + if (sc == IO_UNLOCK) + m.unlock(); - return s.str(); + return os; } -/// get_system_time() returns the current system time, measured in -/// milliseconds. +/// Trampoline helper to avoid moving Logger to misc.h +void start_logger(bool b) { Logger::start(b); } -int get_system_time() { -#if defined(_MSC_VER) - struct _timeb t; - _ftime(&t); - return int(t.time*1000 + t.millitm); +/// timed_wait() waits for msec milliseconds. It is mainly a helper to wrap +/// the conversion from milliseconds to struct timespec, as used by pthreads. + +void timed_wait(WaitCondition& sleepCond, Lock& sleepLock, int msec) { + +#ifdef _WIN32 + int tm = msec; #else - struct timeval t; - gettimeofday(&t, NULL); - return t.tv_sec*1000 + t.tv_usec/1000; + timespec ts, *tm = &ts; + uint64_t ms = Time::now() + msec; + + ts.tv_sec = ms / 1000; + ts.tv_nsec = (ms % 1000) * 1000000LL; #endif + + cond_timedwait(sleepCond, sleepLock, tm); } -/// cpu_count() tries to detect the number of CPU cores. +/// 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 -#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 +void prefetch(char*) {} #else -int cpu_count() { - SYSTEM_INFO s; - GetSystemInfo(&s); - return Min(s.dwNumberOfProcessors, 8); -} - -#endif +void prefetch(char* 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(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