Increase MAX_PLY from 100 to 256

[stockfish] / src / search.cpp

diff --git a/src/search.cpp b/src/search.cpp
index 49a7b4da8883ddcd76cebcde2e15bab6a15b32ae..5706b959f2d9ffeb1e0a121a001a7a44c31b5c3b 100644 (file)
--- a/src/search.cpp
+++ b/src/search.cpp
@@ -307,11 +307,7 @@ void Search::think() {
           << endl;
   }
 
-  for (int i = 0; i < Threads.size(); i++)
-  {
-      Threads[i].maxPly = 0;
-      Threads[i].wake_up();
-  }
+  Threads.set_size(Options["Threads"]);
 
   // Set best timer interval to avoid lagging under time pressure. Timer is
   // used to check for remaining available thinking time.
@@ -348,7 +344,7 @@ finalize:
   // but if we are pondering or in infinite search, we shouldn't print the best
   // move before we are told to do so.
   if (!Signals.stop && (Limits.ponder || Limits.infinite))
-      Threads.wait_for_stop_or_ponderhit();
+      Threads[pos.thread()].wait_for_stop_or_ponderhit();
 
   // Best move could be MOVE_NONE when searching on a stalemate position
   cout << "bestmove " << move_to_uci(RootMoves[0].pv[0], Chess960)
@@ -1061,7 +1057,9 @@ split_point_start: // At split points actual search starts from here
               sp->bestValue = value;
               sp->ss->bestMove = move;
               sp->alpha = alpha;
-              sp->is_betaCutoff = (value >= beta);
+
+              if (value >= beta)
+                  sp->cutoff = true;
           }
       }
 
@@ -1873,6 +1871,7 @@ void Thread::idle_loop(SplitPoint* sp_master) {
 
           Stack ss[MAX_PLY_PLUS_2];
           Position pos(*sp->pos, threadID);
+          int master = sp->master;
 
           memcpy(ss, sp->ss - 1, 4 * sizeof(Stack));
           (ss+1)->sp = sp;
@@ -1894,17 +1893,17 @@ void Thread::idle_loop(SplitPoint* sp_master) {
           sp->slavesMask &= ~(1ULL << threadID);
           sp->nodes += pos.nodes_searched();
 
-          // Wake up master thread so to allow it to return from the idle loop in
-          // case we are the last slave of the split point.
-          if (   Threads.use_sleeping_threads()
-              && threadID != sp->master
-              && !Threads[sp->master].is_searching)
-              Threads[sp->master].wake_up();
-
           // After releasing the lock we cannot access anymore any SplitPoint
           // related data in a reliably way becuase it could have been released
           // under our feet by the sp master.
           lock_release(sp->lock);
+
+          // Wake up master thread so to allow it to return from the idle loop in
+          // case we are the last slave of the split point.
+          if (   Threads.use_sleeping_threads()
+              && threadID != master
+              && !Threads[master].is_searching)
+              Threads[master].wake_up();
       }
   }
   // In helpful master concept a master can help only a sub-tree of its split