50-moves rule improvement for transposition table

[stockfish] / src / main.cpp

diff --git a/src/main.cpp b/src/main.cpp
index 0f7d0e783b369c7118e842ce04b5e278cd462ba4..148bf248f5337aec842666bdeb42df8d163837b1 100644 (file)
--- a/src/main.cpp
+++ b/src/main.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) 2008-2010 Marco Costalba, Joona Kiiski, Tord Romstad
+  Copyright (C) 2008-2015 Marco Costalba, Joona Kiiski, Tord Romstad
+  Copyright (C) 2015-2020 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
@@ -17,96 +18,36 @@
   along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
 
-// To profile with callgrind uncomment following line
-//#define USE_CALLGRIND
-
-
-////
-//// Includes
-////
-
-#include <cstdio>
 #include <iostream>
-#include <string>
 
 #include "bitboard.h"
-#include "bitcount.h"
-#include "endgame.h"
-#include "evaluate.h"
-#include "material.h"
-#include "misc.h"
 #include "position.h"
 #include "search.h"
 #include "thread.h"
-#include "ucioption.h"
-
-#ifdef USE_CALLGRIND
-#include <valgrind/callgrind.h>
-#endif
-
-using namespace std;
-
-extern bool execute_uci_command(const string& cmd);
-extern void benchmark(int argc, char* argv[]);
+#include "tt.h"
+#include "uci.h"
+#include "endgame.h"
+#include "syzygy/tbprobe.h"
 
-////
-//// Functions
-////
+namespace PSQT {
+  void init();
+}
 
 int main(int argc, char* argv[]) {
 
-  // Disable IO buffering for C and C++ standard libraries
-  setvbuf(stdin, NULL, _IONBF, 0);
-  setvbuf(stdout, NULL, _IONBF, 0);
-  cout.rdbuf()->pubsetbuf(NULL, 0);
-  cin.rdbuf()->pubsetbuf(NULL, 0);
-
-  // Startup initializations
-  init_bitboards();
-  init_uci_options();
-  Position::init_zobrist();
-  Position::init_piece_square_tables();
-  init_eval(1);
-  init_bitbases();
-  init_search();
-  init_threads();
-
-#ifdef USE_CALLGRIND
-  CALLGRIND_START_INSTRUMENTATION;
-#endif
-
-  if (argc <= 1)
-  {
-      // Print copyright notice
-      cout << engine_name() << " by " << engine_author() << endl;
-
-      if (CpuHasPOPCNT)
-          cout << "Good! CPU has hardware POPCNT." << endl;
-
-      // Wait for a command from the user, and passes this command to
-      // execute_uci_command() and also intercepts EOF from stdin, by
-      // translating EOF to the "quit" command. This ensures that we
-      // exit gracefully if the GUI dies unexpectedly.
-      string cmd;
+  std::cout << engine_info() << std::endl;
 
-      do {
-          // Wait for a command from stdin
-          if (!getline(cin, cmd))
-              cmd = "quit";
+  UCI::init(Options);
+  PSQT::init();
+  Bitboards::init();
+  Position::init();
+  Bitbases::init();
+  Endgames::init();
+  Threads.set(Options["Threads"]);
+  Search::clear(); // After threads are up
 
-      } while (execute_uci_command(cmd));
-  }
-  else // Process command line arguments
-  {
-      if (string(argv[1]) != "bench" || argc > 7)
-          cout << "Usage: stockfish bench [hash size = 128] [threads = 1] "
-               << "[limit = 12] [fen positions file = default] "
-               << "[depth, time, perft or node limited = depth]" << endl;
-      else
-          benchmark(argc, argv);
-  }
+  UCI::loop(argc, argv);
 
-  exit_threads();
-  quit_eval();
+  Threads.set(0);
   return 0;
 }