Contempt factor: use DrawValue also in case of stealmates

[stockfish] / src / misc.cpp

diff --git a/src/misc.cpp b/src/misc.cpp
index 459c13ccccf887e6e72a8c8be9eafe633c6fed4c..608d772501fc54c70967d16e55ed80ba9cccb573 100644 (file)
--- a/src/misc.cpp
+++ b/src/misc.cpp
@@ -17,24 +17,6 @@
   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 <iomanip>
 #include <iostream>
 #include <sstream>
@@ -42,6 +24,10 @@
 #include "misc.h"
 #include "thread.h"
 
+#if defined(__hpux)
+#    include <sys/pstat.h>
+#endif
+
 using namespace std;
 
 /// Version number. If Version is left empty, then Tag plus current
@@ -65,17 +51,15 @@ const string engine_info(bool to_uci) {
   string month, day, year;
   stringstream s, date(__DATE__); // From compiler, format is "Sep 21 2008"
 
+  s << "Stockfish " << Version;
+
   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 << Tag << setfill('0') << " " << year.substr(2)
+        << setw(2) << (1 + months.find(month) / 4) << setw(2) << day;
   }
-  else
-      s << "Stockfish " << Version;
 
   s << cpu64 << popcnt << (to_uci ? "\nid author ": " by ")
     << "Tord Romstad, Marco Costalba and Joona Kiiski";
@@ -84,6 +68,13 @@ const string engine_info(bool to_uci) {
 }
 
 
+/// Convert system time to milliseconds. That's all we need.
+
+Time::point Time::now() {
+  sys_time_t t; system_time(&t); return time_to_msec(t);
+}
+
+
 /// Debug functions used mainly to collect run-time statistics
 
 static uint64_t hits[2], means[2];
@@ -110,33 +101,33 @@ void dbg_print() {
 /// usual i/o functionality and without changing a single line of code!
 /// Idea from http://groups.google.com/group/comp.lang.c++/msg/1d941c0f26ea0d81
 
-class Logger {
+struct Tie: public streambuf { // MSVC requires splitted streambuf for cin and cout
 
-  Logger() : in(cin.rdbuf(), file), out(cout.rdbuf(), file) {}
-  ~Logger() { start(false); }
+  Tie(streambuf* b, ofstream* f) : buf(b), file(f) {}
 
-  struct Tie: public streambuf { // MSVC requires splitted streambuf for cin and cout
+  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(), ">> "); }
 
-    Tie(streambuf* b, ofstream& f) : buf(b), file(f) {}
+  streambuf* buf;
+  ofstream* file;
 
-    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(), ">> "); }
+  int log(int c, const char* prefix) {
 
-    int log(int c, const char* prefix) {
+    static int last = '\n';
 
-      static int last = '\n';
+    if (last == '\n')
+        file->rdbuf()->sputn(prefix, 3);
 
-      if (last == '\n')
-          file.rdbuf()->sputn(prefix, 3);
+    return last = file->rdbuf()->sputc((char)c);
+  }
+};
 
-      return last = file.rdbuf()->sputc((char)c);
-    }
+class Logger {
 
-    streambuf* buf;
-    ofstream& file;
-  };
+  Logger() : in(cin.rdbuf(), &file), out(cout.rdbuf(), &file) {}
+ ~Logger() { start(false); }
 
   ofstream file;
   Tie in, out;
@@ -162,6 +153,23 @@ public:
 };
 
 
+/// 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); }
 
@@ -200,7 +208,7 @@ void timed_wait(WaitCondition& sleepCond, Lock& sleepLock, int msec) {
   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;
@@ -221,14 +229,19 @@ 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);
+  _mm_prefetch(addr+64, _MM_HINT_T0); // 64 bytes ahead
+#  else
+  __builtin_prefetch(addr);
+  __builtin_prefetch(addr+64);
+#  endif
 }
 
 #endif