Fix an assert in SMP case

[stockfish] / src / movepick.cpp

diff --git a/src/movepick.cpp b/src/movepick.cpp
index 643c8368ca4cf1c28cbf4baa447aa88b5eb0248e..c4eaa902e292e64cdea5858f4f9ae3318f07ec92 100644 (file)
--- a/src/movepick.cpp
+++ b/src/movepick.cpp
@@ -86,7 +86,7 @@ MovePicker::MovePicker(const Position& p, Move ttm, Depth d, const HistoryStats&
   else
       stage = MAIN_SEARCH;
 
-  ttMove = (ttm && pos.is_pseudo_legal(ttm) ? ttm : MOVE_NONE);
+  ttMove = (ttm && pos.pseudo_legal(ttm) ? ttm : MOVE_NONE);
   end += (ttMove != MOVE_NONE);
 }
 
@@ -108,7 +108,7 @@ MovePicker::MovePicker(const Position& p, Move ttm, Depth d, const HistoryStats&
       // Skip TT move if is not a capture or a promotion, this avoids qsearch
       // tree explosion due to a possible perpetual check or similar rare cases
       // when TT table is full.
-      if (ttm && !pos.is_capture_or_promotion(ttm))
+      if (ttm && !pos.capture_or_promotion(ttm))
           ttm = MOVE_NONE;
   }
   else
@@ -118,7 +118,7 @@ MovePicker::MovePicker(const Position& p, Move ttm, Depth d, const HistoryStats&
       ttm = MOVE_NONE;
   }
 
-  ttMove = (ttm && pos.is_pseudo_legal(ttm) ? ttm : MOVE_NONE);
+  ttMove = (ttm && pos.pseudo_legal(ttm) ? ttm : MOVE_NONE);
   end += (ttMove != MOVE_NONE);
 }
 
@@ -131,15 +131,24 @@ MovePicker::MovePicker(const Position& p, Move ttm, const HistoryStats& h, Piece
 
   // In ProbCut we generate only captures better than parent's captured piece
   captureThreshold = PieceValue[MG][pt];
-  ttMove = (ttm && pos.is_pseudo_legal(ttm) ? ttm : MOVE_NONE);
+  ttMove = (ttm && pos.pseudo_legal(ttm) ? ttm : MOVE_NONE);
 
-  if (ttMove && (!pos.is_capture(ttMove) ||  pos.see(ttMove) <= captureThreshold))
+  if (ttMove && (!pos.capture(ttMove) || pos.see(ttMove) <= captureThreshold))
       ttMove = MOVE_NONE;
 
   end += (ttMove != MOVE_NONE);
 }
 
 
+/// quiet_moves() returns a pointer to the beginning of moves array. It
+/// is used to access already tried quiet moves when updating history.
+
+const ExtMove* MovePicker::quiet_moves() const {
+  return  stage == KILLERS_S1 ? killers
+        : stage == QUIETS_1_S1 || stage == QUIETS_2_S1 ? moves : NULL;
+}
+
+
 /// score() assign a numerical move ordering score to each move in a move list.
 /// The moves with highest scores will be picked first.
 template<>
@@ -163,7 +172,7 @@ void MovePicker::score<CAPTURES>() {
   {
       m = it->move;
       it->score =  PieceValue[MG][pos.piece_on(to_sq(m))]
-                 - type_of(pos.piece_moved(m));
+                 - type_of(pos.moved_piece(m));
 
       if (type_of(m) == PROMOTION)
           it->score += PieceValue[MG][promotion_type(m)] - PieceValue[MG][PAWN];
@@ -181,7 +190,7 @@ void MovePicker::score<QUIETS>() {
   for (ExtMove* it = moves; it != end; ++it)
   {
       m = it->move;
-      it->score = history[pos.piece_moved(m)][to_sq(m)];
+      it->score = history[pos.moved_piece(m)][to_sq(m)];
   }
 }
 
@@ -199,11 +208,11 @@ void MovePicker::score<EVASIONS>() {
       if ((seeScore = pos.see_sign(m)) < 0)
           it->score = seeScore - HistoryStats::Max; // At the bottom
 
-      else if (pos.is_capture(m))
+      else if (pos.capture(m))
           it->score =  PieceValue[MG][pos.piece_on(to_sq(m))]
-                     - type_of(pos.piece_moved(m)) + HistoryStats::Max;
+                     - type_of(pos.moved_piece(m)) + HistoryStats::Max;
       else
-          it->score = history[pos.piece_moved(m)][to_sq(m)];
+          it->score = history[pos.moved_piece(m)][to_sq(m)];
   }
 }
 
@@ -299,7 +308,7 @@ Move MovePicker::next_move<false>() {
       switch (stage) {
 
       case MAIN_SEARCH: case EVASION: case QSEARCH_0: case QSEARCH_1: case PROBCUT:
-          cur++;
+          ++cur;
           return ttMove;
 
       case CAPTURES_S1:
@@ -317,9 +326,9 @@ Move MovePicker::next_move<false>() {
       case KILLERS_S1:
           move = (cur++)->move;
           if (    move != MOVE_NONE
-              &&  pos.is_pseudo_legal(move)
+              &&  pos.pseudo_legal(move)
               &&  move != ttMove
-              && !pos.is_capture(move))
+              && !pos.capture(move))
               return move;
           break;