X-Git-Url: https://git.sesse.net/?p=stockfish;a=blobdiff_plain;f=src%2Fmisc.cpp;h=e2f101ab5a03e4ff7b3fc6bad60609bfebec872d;hp=a9b1f17eaea6514c19b0244cf2648c87b4921da0;hb=24dac5ccd309837c6767dcf6b145be385eea2e21;hpb=7f142d68179919a507204e7980fff4f79648dbbc
diff --git a/src/misc.cpp b/src/misc.cpp
index a9b1f17e..e2f101ab 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) 2008-2013 Marco Costalba, Joona Kiiski, Tord Romstad
+ 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
@@ -17,6 +18,7 @@
along with this program. If not, see .
*/
+#include
#include
#include
#include
@@ -26,91 +28,43 @@
using namespace std;
-/// 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 = "";
-
-
-/// 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.
-
-const string engine_info(bool to_uci) {
-
- const string months("Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec");
- 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 << setw(2) << day << setw(2) << (1 + months.find(month) / 4) << year.substr(2);
- }
-
- s << (Is64Bit ? " 64" : "")
- << (HasPopCnt ? " SSE4.2" : "")
- << (to_uci ? "\nid author ": " by ")
- << "Tord Romstad, Marco Costalba and Joona Kiiski";
-
- return s.str();
-}
-
-
-/// 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; }
-
-void dbg_print() {
-
- 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;
-}
+namespace {
+/// Version number. If Version is left empty, then compile date in the format
+/// DD-MM-YY and show in engine_info.
+const string Version = "";
/// 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!
+/// 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
-struct Tie: public streambuf { // MSVC requires splitted streambuf for cin and cout
+struct Tie: public streambuf { // MSVC requires split streambuf for cin and cout
- Tie(streambuf* b, ofstream* f) : buf(b), file(f) {}
+ Tie(streambuf* b, streambuf* l) : buf(b), logBuf(l) {}
- int sync() { return file->rdbuf()->pubsync(), buf->pubsync(); }
+ 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(), ">> "); }
- streambuf* buf;
- ofstream* file;
+ streambuf *buf, *logBuf;
int log(int c, const char* prefix) {
- static int last = '\n';
+ static int last = '\n'; // Single log file
if (last == '\n')
- file->rdbuf()->sputn(prefix, 3);
+ logBuf->sputn(prefix, 3);
- return last = file->rdbuf()->sputc((char)c);
+ return last = logBuf->sputc((char)c);
}
};
class Logger {
- Logger() : in(cin.rdbuf(), &file), out(cout.rdbuf(), &file) {}
+ Logger() : in(cin.rdbuf(), file.rdbuf()), out(cout.rdbuf(), file.rdbuf()) {}
~Logger() { start(false); }
ofstream file;
@@ -123,7 +77,7 @@ public:
if (b && !l.file.is_open())
{
- l.file.open("io_log.txt", ifstream::out | ifstream::app);
+ l.file.open("io_log.txt", ifstream::out);
cin.rdbuf(&l.in);
cout.rdbuf(&l.out);
}
@@ -136,18 +90,66 @@ public:
}
};
+} // namespace
+
+/// 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.
+
+const string engine_info(bool to_uci) {
+
+ 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"
+
+ 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);
+ }
+
+ ss << (Is64Bit ? " 64" : "")
+ << (HasPext ? " BMI2" : (HasPopCnt ? " POPCNT" : ""))
+ << (to_uci ? "\nid author ": " by ")
+ << "T. Romstad, M. Costalba, J. Kiiski, G. Linscott";
+
+ return ss.str();
+}
+
+
+/// Debug functions used mainly to collect run-time statistics
+static int64_t hits[2], means[2];
+
+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; }
-/// Used to serialize access to std::cout to avoid multiple threads to write at
+void dbg_print() {
+
+ 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;
+}
+
+
+/// Used to serialize access to std::cout to avoid multiple threads writing at
/// the same time.
std::ostream& operator<<(std::ostream& os, SyncCout sc) {
static Mutex m;
- if (sc == io_lock)
+ if (sc == IO_LOCK)
m.lock();
- if (sc == io_unlock)
+ if (sc == IO_UNLOCK)
m.unlock();
return os;
@@ -158,44 +160,25 @@ std::ostream& operator<<(std::ostream& os, SyncCout sc) {
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) {
-
-#ifdef _WIN32
- int tm = msec;
-#else
- 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);
-}
-
-
-/// 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.
+/// 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
-void prefetch(char*) {}
+void prefetch(void*) {}
#else
-void prefetch(char* addr) {
+void prefetch(void* addr) {
# if defined(__INTEL_COMPILER)
- // This hack prevents prefetches to be optimized away by
- // Intel compiler. Both MSVC and gcc seems not affected.
+ // This hack prevents prefetches from being optimized away by
+ // Intel compiler. Both MSVC and gcc seem not be affected by this.
__asm__ ("");
# endif
# if defined(__INTEL_COMPILER) || defined(_MSC_VER)
- _mm_prefetch(addr, _MM_HINT_T0);
+ _mm_prefetch((char*)addr, _MM_HINT_T0);
# else
__builtin_prefetch(addr);
# endif