X-Git-Url: https://git.sesse.net/?p=stockfish;a=blobdiff_plain;f=src%2Fmovepick.h;h=423a6a1805e34a233844024940bd8d66839fb74b;hp=a7b25a924b47bd04383c9b98fb96e78c272f3d71;hb=946fa4762539307dcdcb30d08f13d627864e9bcf;hpb=42b48b08e81b55e385e55b3074b7c59d81809a45

diff --git a/src/movepick.h b/src/movepick.h
index a7b25a92..423a6a18 100644
--- a/src/movepick.h
+++ b/src/movepick.h
@@ -21,7 +21,6 @@
 #define MOVEPICK_H_INCLUDED
 
 #include <algorithm> // For std::max
-#include <cstring>   // For std::memset
 
 #include "movegen.h"
 #include "position.h"
@@ -43,15 +42,12 @@ struct Stats {
   static const Value Max = Value(250);
 
   const T* operator[](Piece pc) const { return table[pc]; }
-  void clear() { std::memset(table, 0, sizeof(table)); }
+  T* operator[](Piece pc) { return table[pc]; }
 
   void update(Piece pc, Square to, Move m) {
 
-    if (m == table[pc][to].first)
-        return;
-
-    table[pc][to].second = table[pc][to].first;
-    table[pc][to].first = m;
+    if (m != table[pc][to])
+        table[pc][to] = m;
   }
 
   void update(Piece pc, Square to, Value v) {
@@ -69,7 +65,8 @@ private:
 
 typedef Stats< true, Value> GainsStats;
 typedef Stats<false, Value> HistoryStats;
-typedef Stats<false, std::pair<Move, Move> > MovesStats;
+typedef Stats<false, Move> MovesStats;
+typedef Stats<false, HistoryStats> CounterMovesHistoryStats;
 
 
 /// MovePicker class is used to pick one pseudo legal move at a time from the
@@ -80,33 +77,35 @@ typedef Stats<false, std::pair<Move, Move> > MovesStats;
 /// to get a cut-off first.
 
 class MovePicker {
-
-  MovePicker& operator=(const MovePicker&); // Silence a warning under MSVC
-
 public:
-  MovePicker(const Position&, Move, Depth, const HistoryStats&, Square);
-  MovePicker(const Position&, Move, const HistoryStats&, PieceType);
-  MovePicker(const Position&, Move, Depth, const HistoryStats&, Move*, Move*, Search::Stack*);
+  MovePicker(const MovePicker&) = delete;
+  MovePicker& operator=(const MovePicker&) = delete;
+
+  MovePicker(const Position&, Move, Depth, const HistoryStats&, const CounterMovesHistoryStats&, Square);
+  MovePicker(const Position&, Move, const HistoryStats&, const CounterMovesHistoryStats&, PieceType);
+  MovePicker(const Position&, Move, Depth, const HistoryStats&, const CounterMovesHistoryStats&, Move, Search::Stack*);
 
   template<bool SpNode> Move next_move();
 
 private:
   template<GenType> void score();
   void generate_next_stage();
+  ExtMove* begin() { return moves; }
+  ExtMove* end() { return endMoves; }
 
   const Position& pos;
   const HistoryStats& history;
+  const CounterMovesHistoryStats& counterMovesHistory;
   Search::Stack* ss;
-  Move* countermoves;
-  Move* followupmoves;
+  Move countermove;
   Depth depth;
   Move ttMove;
-  ExtMove killers[6];
+  ExtMove killers[3];
   Square recaptureSquare;
   Value captureThreshold;
   int stage;
-  ExtMove *cur, *end, *endQuiets, *endBadCaptures;
-  ExtMove moves[MAX_MOVES];
+  ExtMove *endQuiets, *endBadCaptures;
+  ExtMove moves[MAX_MOVES], *cur = moves, *endMoves = moves;
 };
 
 #endif // #ifndef MOVEPICK_H_INCLUDED