/*
Stockfish, a UCI chess playing engine derived from Glaurung 2.1
Copyright (C) 2004-2008 Tord Romstad (Glaurung author)
- Copyright (C) 2008-2012 Marco Costalba, Joona Kiiski, Tord Romstad
+ Copyright (C) 2008-2013 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
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
-#if defined(_WIN32) || defined(_WIN64)
-
-#define NOMINMAX // disable macros min() and max()
-#include <windows.h>
-
-#else
-
-# include <unistd.h>
-# if defined(__hpux)
-# include <sys/pstat.h>
-# endif
-
-#endif
-
-#if !defined(NO_PREFETCH)
-# include <xmmintrin.h>
-#endif
-
-#include <algorithm>
#include <iomanip>
#include <iostream>
#include <sstream>
using namespace std;
-/// Version number. If Version is left empty, then Tag plus current
-/// date (in the format YYMMDD) is used as a version number.
-
+/// Version number. If Version is left empty, then compile date, in the
+/// format DD-MM-YY, is shown in engine_info.
static const string Version = "";
-static const string Tag = "";
-/// 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 <version number>", depending
-/// on whether Version is empty.
+/// engine_info() returns the full name of the current Stockfish version. This
+/// will be either "Stockfish <Tag> DD-MM-YY" (where DD-MM-YY is the date when
+/// the program was compiled) or "Stockfish <Version>", depending on whether
+/// Version is empty.
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(Is64Bit ? " 64bit" : "");
- const string popcnt(HasPopCnt ? " SSE4.2" : "");
-
string month, day, year;
stringstream s, date(__DATE__); // From compiler, format is "Sep 21 2008"
+ s << "Stockfish " << Version << setfill('0');
+
if (Version.empty())
{
date >> month >> day >> year;
-
- s << "Stockfish " << Tag
- << setfill('0') << " " << year.substr(2)
- << setw(2) << (1 + months.find(month) / 4)
- << setw(2) << day;
+ s << setw(2) << day << setw(2) << (1 + months.find(month) / 4) << year.substr(2);
}
- else
- s << "Stockfish " << Version;
- s << cpu64 << popcnt << (to_uci ? "\nid author ": " by ")
+ s << (Is64Bit ? " 64" : "")
+ << (HasPopCnt ? " SSE4.2" : "")
+ << (to_uci ? "\nid author ": " by ")
<< "Tord Romstad, Marco Costalba and Joona Kiiski";
return s.str();
}
-/// cpu_count() tries to detect the number of CPU cores
+/// 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
-int cpu_count() {
+struct Tie: public streambuf { // MSVC requires splitted streambuf for cin and cout
-#if defined(_WIN32) || defined(_WIN64)
- SYSTEM_INFO s;
- GetSystemInfo(&s);
- return std::min(int(s.dwNumberOfProcessors), MAX_THREADS);
-#else
+ Tie(streambuf* b, ofstream* f) : buf(b), file(f) {}
-# if defined(_SC_NPROCESSORS_ONLN)
- 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
- return 1;
-# endif
+ 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(), ">> "); }
-#endif
+ streambuf* buf;
+ ofstream* file;
+
+ int log(int c, const char* prefix) {
+
+ static int last = '\n';
+
+ if (last == '\n')
+ file->rdbuf()->sputn(prefix, 3);
+
+ return last = file->rdbuf()->sputc((char)c);
+ }
+};
+
+class Logger {
+
+ Logger() : in(cin.rdbuf(), &file), out(cout.rdbuf(), &file) {}
+ ~Logger() { start(false); }
+
+ ofstream file;
+ Tie in, out;
+
+public:
+ static void start(bool b) {
+
+ static Logger l;
+
+ 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();
+ }
+ }
+};
+
+
+/// Used to serialize access to std::cout to avoid multiple threads to write at
+/// the same time.
+
+std::ostream& operator<<(std::ostream& os, SyncCout sc) {
+
+ static Mutex m;
+
+ if (sc == io_lock)
+ m.lock();
+
+ if (sc == io_unlock)
+ m.unlock();
+
+ return os;
}
+/// Trampoline helper to avoid moving Logger to misc.h
+void start_logger(bool b) { Logger::start(b); }
+
+
/// 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(_WIN32) || defined(_WIN64)
+#ifdef _WIN32
int tm = msec;
#else
timespec ts, *tm = &ts;
- uint64_t ms = Time::current_time().msec() + msec;
+ uint64_t ms = Time::now() + msec;
ts.tv_sec = ms / 1000;
ts.tv_nsec = (ms % 1000) * 1000000LL;
/// 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)
+#ifdef NO_PREFETCH
void prefetch(char*) {}
void prefetch(char* addr) {
-# if defined(__INTEL_COMPILER) || defined(__ICL)
+# if defined(__INTEL_COMPILER)
// 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
+# if defined(__INTEL_COMPILER) || defined(_MSC_VER)
+ _mm_prefetch(addr, _MM_HINT_T0);
+# else
+ __builtin_prefetch(addr);
+# endif
}
#endif
projects / stockfish / blobdiff