X-Git-Url: https://git.sesse.net/?p=stockfish;a=blobdiff_plain;f=src%2Fmisc.cpp;h=3206a2d1950081229b0e9d3f623ba2db66dc8f81;hp=cb2ea168256d4ee2eaa5d55ae5e607b1d41c2242;hb=72641dcaae2241c830254fc19b742eb477d831a3;hpb=b41b590457d2b57ad6405527e7364531af814440 diff --git a/src/misc.cpp b/src/misc.cpp index cb2ea168..3206a2d1 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) 2008-2010 Marco Costalba, Joona Kiiski, Tord Romstad + Copyright (C) 2008-2012 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 @@ -17,154 +17,158 @@ along with this program. If not, see . */ -#if !defined(_MSC_VER) - -# include -# include -# include -# if defined(__hpux) -# include -# endif - -#else - -#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" +#if defined(__hpux) +# include +#endif + using namespace std; -/// Version number. If EngineVersion is left empty, then AppTag plus -/// current date (in the format YYMMDD) is used as a version number. +/// Version number. If Version is left empty, then Tag plus current +/// date (in the format YYMMDD) is used as a version number. -static const string AppName = "Stockfish"; -static const string EngineVersion = ""; -static const string AppTag = ""; +static const string Version = ""; +static const string Tag = ""; -/// engine_name() returns the full name of the current Stockfish version. +/// 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 ", depending -/// on whether the constant EngineVersion is empty. +/// on whether Version is empty. -const string engine_name() { +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(CpuIs64Bit ? " 64bit" : ""); - - if (!EngineVersion.empty()) - return AppName + " " + EngineVersion + cpu64; + const string cpu64(Is64Bit ? " 64bit" : ""); + const string popcnt(HasPopCnt ? " SSE4.2" : ""); - stringstream s, date(__DATE__); // From compiler, format is "Sep 21 2008" string month, day, year; + stringstream s, date(__DATE__); // From compiler, format is "Sep 21 2008" + + if (Version.empty()) + { + date >> month >> day >> year; - date >> month >> day >> year; + s << "Stockfish " << Tag + << setfill('0') << " " << year.substr(2) + << setw(2) << (1 + months.find(month) / 4) + << setw(2) << day; + } + else + s << "Stockfish " << Version; - s << setfill('0') << AppName + " " + AppTag + " " - << year.substr(2, 2) << setw(2) - << (1 + months.find(month) / 4) << setw(2) - << day << cpu64; + s << cpu64 << popcnt << (to_uci ? "\nid author ": " by ") + << "Tord Romstad, Marco Costalba and Joona Kiiski"; return s.str(); } -/// Our brave developers! Required by UCI +/// Debug functions used mainly to collect run-time statistics + +static uint64_t hits[2], means[2]; + +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_authors() { +void dbg_print() { - return "Tord Romstad, Marco Costalba and Joona Kiiski"; + 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 " + << (float)means[1] / means[0] << endl; } -/// Debug stuff. Helper functions used mainly for debugging purposes +/// 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 while preserving +/// usual i/o functionality and without changing a single line of code! +/// Idea from http://groups.google.com/group/comp.lang.c++/msg/1d941c0f26ea0d81 -static uint64_t dbg_hit_cnt0; -static uint64_t dbg_hit_cnt1; -static uint64_t dbg_mean_cnt0; -static uint64_t dbg_mean_cnt1; +class Logger { -void dbg_print_hit_rate() { + Logger() : in(cin.rdbuf(), file), out(cout.rdbuf(), file) {} + ~Logger() { start(false); } - if (dbg_hit_cnt0) - cout << "Total " << dbg_hit_cnt0 << " Hit " << dbg_hit_cnt1 - << " hit rate (%) " << 100 * dbg_hit_cnt1 / dbg_hit_cnt0 << endl; -} + struct Tie: public streambuf { // MSVC requires splitted streambuf for cin and cout -void dbg_print_mean() { + Tie(streambuf* b, ofstream& f) : buf(b), file(f) {} - if (dbg_mean_cnt0) - cout << "Total " << dbg_mean_cnt0 << " Mean " - << (float)dbg_mean_cnt1 / dbg_mean_cnt0 << endl; -} + 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(), ">> "); } -void dbg_mean_of(int v) { + int log(int c, const char* prefix) { - dbg_mean_cnt0++; - dbg_mean_cnt1 += v; -} + static int last = '\n'; -void dbg_hit_on(bool b) { + if (last == '\n') + file.rdbuf()->sputn(prefix, 3); - dbg_hit_cnt0++; - if (b) - dbg_hit_cnt1++; -} + return last = file.rdbuf()->sputc((char)c); + } -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--; } + streambuf* buf; + ofstream& file; + }; + ofstream file; + Tie in, out; -/// get_system_time() returns the current system time, measured in milliseconds +public: + static void start(bool b) { -int get_system_time() { + static Logger l; -#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 -} + 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(); + } + } +}; + + +/// Trampoline helper to avoid moving Logger to misc.h +void start_logger(bool b) { Logger::start(b); } /// cpu_count() tries to detect the number of CPU cores int cpu_count() { -#if defined(_MSC_VER) +#if defined(_WIN32) || defined(_WIN64) SYSTEM_INFO s; GetSystemInfo(&s); - return Min(s.dwNumberOfProcessors, MAX_THREADS); + return s.dwNumberOfProcessors; #else # if defined(_SC_NPROCESSORS_ONLN) - return Min(sysconf(_SC_NPROCESSORS_ONLN), MAX_THREADS); + 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 Min(psd.psd_proc_cnt, MAX_THREADS); + return psd.psd_proc_cnt; # else return 1; # endif @@ -173,78 +177,24 @@ int cpu_count() { } -/// Check for console input. Original code from Beowulf, Olithink and Greko - -#ifndef _WIN32 +/// timed_wait() waits for msec milliseconds. It is mainly an helper to wrap +/// conversion from milliseconds to struct timespec, as used by pthreads. -int input_available() { - - fd_set readfds; - struct timeval timeout; - - FD_ZERO(&readfds); - FD_SET(fileno(stdin), &readfds); - timeout.tv_sec = 0; // Set to timeout immediately - timeout.tv_usec = 0; - select(16, &readfds, 0, 0, &timeout); - - return (FD_ISSET(fileno(stdin), &readfds)); -} +void timed_wait(WaitCondition& sleepCond, Lock& sleepLock, int msec) { +#if defined(_WIN32) || defined(_WIN64) + int tm = msec; #else + timespec ts, *tm = &ts; + uint64_t ms = Time::current_time().msec() + msec; -int input_available() { - - static HANDLE inh = NULL; - static bool usePipe = false; - INPUT_RECORD rec[256]; - DWORD nchars, recCnt; - - if (!inh) - { - inh = GetStdHandle(STD_INPUT_HANDLE); - if (GetConsoleMode(inh, &nchars)) - { - SetConsoleMode(inh, nchars & ~(ENABLE_MOUSE_INPUT | ENABLE_WINDOW_INPUT)); - FlushConsoleInputBuffer(inh); - } else - usePipe = true; - } - - // When using Standard C input functions, also check if there - // is anything in the buffer. After a call to such functions, - // the input waiting in the pipe will be copied to the buffer, - // and the call to PeekNamedPipe can indicate no input available. - // Setting stdin to unbuffered was not enough. [from Greko] - if (stdin->_cnt > 0) - return 1; - - // When running under a GUI the input commands are sent to us - // directly over the internal pipe. If PeekNamedPipe() returns 0 - // then something went wrong. Probably the parent program exited. - // Returning 1 will make the next call to the input function - // return EOF, where this should be catched then. - if (usePipe) - return PeekNamedPipe(inh, NULL, 0, NULL, &nchars, NULL) ? nchars : 1; - - // Count the number of unread input records, including keyboard, - // mouse, and window-resizing input records. - GetNumberOfConsoleInputEvents(inh, &nchars); - - // Read data from console without removing it from the buffer - if (nchars <= 0 || !PeekConsoleInput(inh, rec, Min(nchars, 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; + ts.tv_sec = ms / 1000; + ts.tv_nsec = (ms % 1000) * 1000000LL; +#endif - return 0; + cond_timedwait(sleepCond, sleepLock, tm); } -#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 @@ -255,13 +205,15 @@ void prefetch(char*) {} #else +# include + void prefetch(char* addr) { -#if defined(__INTEL_COMPILER) || defined(__ICL) +# 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 +# endif _mm_prefetch(addr, _MM_HINT_T2); _mm_prefetch(addr+64, _MM_HINT_T2); // 64 bytes ahead