X-Git-Url: https://git.sesse.net/?p=stockfish;a=blobdiff_plain;f=src%2Fposition.cpp;h=62749a913b75cfaa5e317c43bd8879e7370009f6;hp=57d6dc09bce917c7d9014f1d31340b6ed6134dd8;hb=e1919384a23fe728422f995369161efa192380db;hpb=0439a79566d03065317b2025b9b479b9ae9f2d65

diff --git a/src/position.cpp b/src/position.cpp
index 57d6dc09..62749a91 100644
--- a/src/position.cpp
+++ b/src/position.cpp
@@ -92,25 +92,17 @@ CheckInfo::CheckInfo(const Position& pos) {
 }
 
 
-/// Position c'tors. Here we always create a copy of the original position
-/// or the FEN string, we want the new born Position object do not depend
-/// on any external data so we detach state pointer from the source one.
+/// Position::operator=() creates a copy of 'pos'. We want the new born Position
+/// object do not depend on any external data so we detach state pointer from
+/// the source one.
 
-void Position::copy(const Position& pos, int th) {
+Position& Position::operator=(const Position& pos) {
 
   memcpy(this, &pos, sizeof(Position));
   startState = *st;
   st = &startState;
-  threadID = th;
   nodes = 0;
-
-  assert(pos_is_ok());
-}
-
-Position::Position(const string& fen, bool isChess960, int th) {
-
-  from_fen(fen, isChess960);
-  threadID = th;
+  return *this;
 }
 
 
@@ -336,7 +328,7 @@ void Position::print(Move move) const {
 
   if (move)
   {
-      Position p(*this, this_thread());
+      Position p(*this);
       cout << "\nMove is: " << (sideToMove == BLACK ? ".." : "") << move_to_san(p, move);
   }
 
@@ -903,8 +895,8 @@ void Position::do_move(Move m, StateInfo& newSt, const CheckInfo& ci, bool moveI
   }
 
   // Prefetch pawn and material hash tables
-  prefetch((char*)Threads[threadID].pawnTable.entries[st->pawnKey]);
-  prefetch((char*)Threads[threadID].materialTable.entries[st->materialKey]);
+  prefetch((char*)Threads.this_thread()->pawnTable.entries[st->pawnKey]);
+  prefetch((char*)Threads.this_thread()->materialTable.entries[st->materialKey]);
 
   // Update incremental scores
   st->psqScore += psq_delta(piece, from, to);
@@ -1546,10 +1538,9 @@ void Position::init() {
 void Position::flip() {
 
   // Make a copy of current position before to start changing
-  const Position pos(*this, threadID);
+  const Position pos(*this);
 
   clear();
-  threadID = pos.this_thread();
 
   // Board
   for (Square s = SQ_A1; s <= SQ_H8; s++)