X-Git-Url: https://git.sesse.net/?p=stockfish;a=blobdiff_plain;f=src%2Fmisc.cpp;h=bdb2cc27c4d31372165ebfff8e073f535c913064;hp=9189e327fd1f49b2048e9a515e53ffc70c2bd6aa;hb=17d1940278aadde3d9d844f7c913ca6c8655bbf3;hpb=0a6532a39d2e2cfd92ba0a2c4fa8c6ad6c29b581

diff --git a/src/misc.cpp b/src/misc.cpp
index 9189e327..bdb2cc27 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
@@ -17,17 +17,13 @@
   along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
 
-#if defined(_MSC_VER)
+#if defined(_WIN32) || defined(_WIN64)
 
-#define _CRT_SECURE_NO_DEPRECATE
 #define NOMINMAX // disable macros min() and max()
 #include <windows.h>
-#include <sys/timeb.h>
 
 #else
 
-#  include <sys/time.h>
-#  include <sys/types.h>
 #  include <unistd.h>
 #  if defined(__hpux)
 #     include <sys/pstat.h>
@@ -39,123 +35,137 @@
 #  include <xmmintrin.h>
 #endif
 
-#include <cassert>
-#include <cstdio>
+#include <algorithm>
 #include <iomanip>
 #include <iostream>
 #include <sstream>
-#include <algorithm>
 
-#include "bitcount.h"
 #include "misc.h"
 #include "thread.h"
 
 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 <version number>", 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(Is64Bit ? " 64bit" : "");
   const string popcnt(HasPopCnt ? " SSE4.2" : "");
 
-  if (!EngineVersion.empty())
-      return AppName + " " + EngineVersion + cpu64 + popcnt;
-
-  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 << AppName + " " + AppTag + " "
-    << setfill('0') << year.substr(2)
-    << setw(2) << (1 + months.find(month) / 4)
-    << setw(2) << day << cpu64 << popcnt;
+  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
 
-const string engine_authors() {
+static uint64_t hits[2], means[2];
 
-  return "Tord Romstad, Marco Costalba and Joona Kiiski";
-}
+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() {
 
-/// Debug stuff. Helper functions used mainly for debugging purposes
+  if (hits[0])
+      cerr << "Total " << hits[0] << " Hits " << hits[1]
+           << " hit rate (%) " << 100 * hits[1] / hits[0] << endl;
 
-static uint64_t dbg_hit_cnt0;
-static uint64_t dbg_hit_cnt1;
-static uint64_t dbg_mean_cnt0;
-static uint64_t dbg_mean_cnt1;
+  if (means[0])
+      cerr << "Total " << means[0] << " Mean "
+           << (float)means[1] / means[0] << endl;
+}
 
-void dbg_print_hit_rate() {
 
-  if (dbg_hit_cnt0)
-      cerr << "Total " << dbg_hit_cnt0 << " Hit " << dbg_hit_cnt1
-           << " hit rate (%) " << 100 * dbg_hit_cnt1 / dbg_hit_cnt0 << endl;
-}
+/// Our fancy logging facility. The trick here is to replace cin.rdbuf() and
+/// cout.rdbuf() with this one that tees cin and cout to a file stream. We can
+/// toggle the logging of std::cout and std:cin at runtime while preserving i/o
+/// functionality and without changing a single line of code!
+/// Idea from http://groups.google.com/group/comp.lang.c++/msg/1d941c0f26ea0d81
 
-void dbg_print_mean() {
+class Logger: public streambuf {
 
-  if (dbg_mean_cnt0)
-      cerr << "Total " << dbg_mean_cnt0 << " Mean "
-           << (float)dbg_mean_cnt1 / dbg_mean_cnt0 << endl;
-}
+  Logger() : cinbuf(cin.rdbuf()), coutbuf(cout.rdbuf()) {}
+  ~Logger() { start(false); }
 
-void dbg_mean_of(int v) {
+public:
+  static void start(bool b) {
 
-  dbg_mean_cnt0++;
-  dbg_mean_cnt1 += v;
-}
+    static Logger l;
 
-void dbg_hit_on(bool b) {
+    if (b && !l.file.is_open())
+    {
+        l.file.open("io_log.txt", ifstream::out | ifstream::app);
+        cin.rdbuf(&l);
+        cout.rdbuf(&l);
+    }
+    else if (!b && l.file.is_open())
+    {
+        cout.rdbuf(l.coutbuf);
+        cin.rdbuf(l.cinbuf);
+        l.file.close();
+    }
+  }
 
-  dbg_hit_cnt0++;
-  if (b)
-      dbg_hit_cnt1++;
-}
+private:
+  int sync() { return file.rdbuf()->pubsync(), coutbuf->pubsync(); }
+  int overflow(int c) { return log(coutbuf->sputc((char)c), "<< ") ; }
+  int underflow() { return cinbuf->sgetc(); }
+  int uflow() { return log(cinbuf->sbumpc(), ">> "); }
 
-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--; }
+  int log(int c, const char* prefix) {
 
+    static int last = '\n';
 
-/// system_time() returns the current system time, measured in milliseconds
+    if (last == '\n')
+        file.rdbuf()->sputn(prefix, 3);
 
-int system_time() {
+    return last = file.rdbuf()->sputc((char)c);
+  }
+
+private:
+  ofstream file;
+  streambuf *cinbuf, *coutbuf;
+};
 
-#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
-}
+
+/// Trampoline helper to avoid moving Logger to misc.h header
+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 std::min(int(s.dwNumberOfProcessors), MAX_THREADS);
@@ -179,24 +189,16 @@ int cpu_count() {
 /// 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) {
+void timed_wait(WaitCondition& sleepCond, Lock& sleepLock, int msec) {
 
-#if defined(_MSC_VER)
+#if defined(_WIN32) || defined(_WIN64)
   int tm = msec;
 #else
-  struct timeval t;
-  struct timespec abstime, *tm = &abstime;
-
-  gettimeofday(&t, NULL);
+  timespec ts, *tm = &ts;
+  uint64_t ms = Time::current_time().msec() + msec;
 
-  abstime.tv_sec = t.tv_sec + (msec / 1000);
-  abstime.tv_nsec = (t.tv_usec + (msec % 1000) * 1000) * 1000;
-
-  if (abstime.tv_nsec > 1000000000LL)
-  {
-      abstime.tv_sec += 1;
-      abstime.tv_nsec -= 1000000000LL;
-  }
+  ts.tv_sec = ms / 1000;
+  ts.tv_nsec = (ms % 1000) * 1000000LL;
 #endif
 
   cond_timedwait(sleepCond, sleepLock, tm);
@@ -214,11 +216,11 @@ void prefetch(char*) {}
 
 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