Convert History table H in a local variable

[stockfish] / src / search.h

diff --git a/src/search.h b/src/search.h
index f73799b3db557a4640367cb69973f59a63427f33..03c35f022d97cd2b5588c6947738ad2c663c2361 100644 (file)
--- a/src/search.h
+++ b/src/search.h
@@ -1,18 +1,18 @@
 /*
   Stockfish, a UCI chess playing engine derived from Glaurung 2.1
   Copyright (C) 2004-2008 Tord Romstad (Glaurung author)
-  Copyright (C) 2008 Marco Costalba
+  Copyright (C) 2008-2009 Marco Costalba
 
   Stockfish is free software: you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation, either version 3 of the License, or
   (at your option) any later version.
-  
+
   Stockfish is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.
-  
+
   You should have received a copy of the GNU General Public License
   along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
@@ -25,7 +25,6 @@
 //// Includes
 ////
 
-#include "types.h"
 #include "depth.h"
 #include "history.h"
 #include "lock.h"
@@ -41,7 +40,7 @@
 
 const int PLY_MAX = 100;
 const int PLY_MAX_PLUS_2 = 102;
-const int KILLER_MAX = 4;
+const int KILLER_MAX = 2;
 
 
 ////
@@ -56,11 +55,13 @@ const int KILLER_MAX = 4;
 struct SearchStack {
   Move pv[PLY_MAX];
   Move currentMove;
-  Value currentMoveCaptureValue;
   Move mateKiller;
   Move threatMove;
   Move killers[KILLER_MAX];
   Depth reduction;
+
+  void init(int ply);
+  void initKillers();
 };
 
 
@@ -68,14 +69,10 @@ struct SearchStack {
 //// Global variables
 ////
 
-extern SearchStack EmptySearchStack;
 extern TranspositionTable TT;
 extern int ActiveThreads;
 extern Lock SMPLock;
 
-// Perhaps better to make H local, and pass as parameter to MovePicker?
-extern History H;  
-
 
 ////
 //// Prototypes
@@ -83,8 +80,8 @@ extern History H;
 
 extern void init_threads();
 extern void stop_threads();
-extern void think(const Position &pos, bool infinite, bool ponder, int side_to_move,
-                  int time[], int increment[], int movesToGo, int maxDepth, 
+extern bool think(const Position &pos, bool infinite, bool ponder, int side_to_move,
+                  int time[], int increment[], int movesToGo, int maxDepth,
                   int maxNodes, int maxTime, Move searchMoves[]);
 extern int64_t nodes_searched();