/*
Stockfish, a UCI chess playing engine derived from Glaurung 2.1
Copyright (C) 2004-2008 Tord Romstad (Glaurung author)
- Copyright (C) 2008-2012 Marco Costalba, Joona Kiiski, Tord Romstad
+ Copyright (C) 2008-2014 Marco Costalba, Joona Kiiski, Tord Romstad
Stockfish is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
-#if !defined(SEARCH_H_INCLUDED)
+#ifndef SEARCH_H_INCLUDED
#define SEARCH_H_INCLUDED
-#include <cstring>
#include <memory>
#include <stack>
#include <vector>
/// has its own array of Stack objects, indexed by the current ply.
struct Stack {
- SplitPoint* sp;
+ SplitPoint* splitPoint;
int ply;
Move currentMove;
+ Move ttMove;
Move excludedMove;
Move killers[2];
Depth reduction;
Value staticEval;
- Value evalMargin;
- int skipNullMove;
+ bool skipNullMove;
};
/// all non-pv moves.
struct RootMove {
- RootMove(){} // Needed by sort()
RootMove(Move m) : score(-VALUE_INFINITE), prevScore(-VALUE_INFINITE) {
pv.push_back(m); pv.push_back(MOVE_NONE);
}
- bool operator<(const RootMove& m) const { return score < m.score; }
+ bool operator<(const RootMove& m) const { return score > m.score; } // Ascending sort
bool operator==(const Move& m) const { return pv[0] == m; }
void extract_pv_from_tt(Position& pos);
/// The LimitsType struct stores information sent by GUI about available time
/// to search the current move, maximum depth/time, if we are in analysis mode
-/// or if we have to ponder while is our opponent's side to move.
+/// or if we have to ponder while it's our opponent's turn to move.
struct LimitsType {
- LimitsType() { memset(this, 0, sizeof(LimitsType)); }
+ LimitsType() { // Using memset on a std::vector is undefined behavior
+ time[WHITE] = time[BLACK] = inc[WHITE] = inc[BLACK] = movestogo =
+ depth = nodes = movetime = mate = infinite = ponder = 0;
+ }
bool use_time_management() const { return !(mate | movetime | depth | nodes | infinite); }
+ std::vector<Move> searchmoves;
int time[COLOR_NB], inc[COLOR_NB], movestogo, depth, nodes, movetime, mate, infinite, ponder;
};
/// The SignalsType struct stores volatile flags updated during the search
-/// typically in an async fashion, for instance to stop the search by the GUI.
+/// typically in an async fashion e.g. to stop the search by the GUI.
struct SignalsType {
- bool stopOnPonderhit, firstRootMove, stop, failedLowAtRoot;
+ bool stop, stopOnPonderhit, firstRootMove, failedLowAtRoot;
};
typedef std::auto_ptr<std::stack<StateInfo> > StateStackPtr;
extern LimitsType Limits;
extern std::vector<RootMove> RootMoves;
extern Position RootPos;
-extern Color RootColor;
extern Time::point SearchTime;
extern StateStackPtr SetupStates;
extern void init();
-extern size_t perft(Position& pos, Depth depth);
+extern uint64_t perft(Position& pos, Depth depth);
extern void think();
} // namespace Search
-#endif // !defined(SEARCH_H_INCLUDED)
+#endif // #ifndef SEARCH_H_INCLUDED