In split() release the lock before slow search stack copy

[stockfish] / src / thread.h

diff --git a/src/thread.h b/src/thread.h
index d97a25a693831b047a547ba539d51fc01e7fec06..d12ec845c01f4bc4a288bd6bfe076b8652ca9b5b 100644 (file)
--- a/src/thread.h
+++ b/src/thread.h
@@ -1,7 +1,7 @@
 /*
   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
@@ -37,6 +37,7 @@
 ////
 
 const int THREAD_MAX = 8;
+const int ACTIVE_SPLIT_POINTS_MAX = 8;
 
 
 ////
@@ -45,14 +46,13 @@ const int THREAD_MAX = 8;
 
 struct SplitPoint {
   SplitPoint *parent;
-  Position pos;
-  SearchStack sstack[THREAD_MAX][PLY_MAX];
+  const Position* pos;
+  SearchStack sstack[THREAD_MAX][PLY_MAX_PLUS_2];
   SearchStack *parentSstack;
   int ply;
   Depth depth;
-  volatile Value alpha, beta, bestValue;
+  volatile Value alpha, beta, bestValue, futilityValue;
   bool pvNode;
-  Bitboard dcCandidates;
   int master, slaves[THREAD_MAX];
   Lock lock;
   MovePicker *mp;
@@ -66,13 +66,14 @@ struct Thread {
   SplitPoint *splitPoint;
   int activeSplitPoints;
   uint64_t nodes;
+  uint64_t betaCutOffs[2];
   bool failHighPly1;
   volatile bool stop;
   volatile bool running;
   volatile bool idle;
   volatile bool workIsWaiting;
   volatile bool printCurrentLine;
-  unsigned char pad[64];
+  unsigned char pad[64]; // set some distance among local data for each thread
 };