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BadFish/src/search.h
Marco Costalba 5b8ca1eee7 Move SearchStack under Search namespace
No functional change.

Signed-off-by: Marco Costalba <mcostalba@gmail.com>
2011-12-04 12:03:59 +01:00

82 lines
2.4 KiB
C++

/*
Stockfish, a UCI chess playing engine derived from Glaurung 2.1
Copyright (C) 2004-2008 Tord Romstad (Glaurung author)
Copyright (C) 2008-2010 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
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
Stockfish is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#if !defined(SEARCH_H_INCLUDED)
#define SEARCH_H_INCLUDED
#include <cstring>
#include <vector>
#include "types.h"
class Position;
struct SplitPoint;
namespace Search {
/// The Stack struct keeps track of the information we need to remember from
/// nodes shallower and deeper in the tree during the search. Each search thread
/// has its own array of Stack objects, indexed by the current ply.
struct Stack {
SplitPoint* sp;
int ply;
Move currentMove;
Move excludedMove;
Move bestMove;
Move killers[2];
Depth reduction;
Value eval;
Value evalMargin;
int skipNullMove;
};
/// 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.
struct LimitsType {
LimitsType() { memset(this, 0, sizeof(LimitsType)); }
bool useTimeManagement() const { return !(maxTime | maxDepth | maxNodes | infinite); }
int time, increment, movesToGo, maxTime, maxDepth, maxNodes, 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.
struct SignalsType {
bool stopOnPonderhit, firstRootMove, stop, failedLowAtRoot;
};
extern volatile SignalsType Signals;
extern LimitsType Limits;
extern std::vector<Move> RootMoves;
extern Position RootPosition;
extern void init();
extern int64_t perft(Position& pos, Depth depth);
extern void think();
} // namespace
#endif // !defined(SEARCH_H_INCLUDED)