mirror of
https://github.com/sockspls/badfish
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95 lines
2.3 KiB
C
95 lines
2.3 KiB
C
/*
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Stockfish, a UCI chess playing engine derived from Glaurung 2.1
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Copyright (C) 2004-2008 Tord Romstad (Glaurung author)
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Copyright (C) 2008-2010 Marco Costalba, Joona Kiiski, Tord Romstad
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Stockfish is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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Stockfish is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#if !defined(THREAD_H_INCLUDED)
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#define THREAD_H_INCLUDED
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////
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//// Includes
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////
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#include <cstring>
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#include "lock.h"
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#include "movepick.h"
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#include "position.h"
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#include "search.h"
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////
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//// Constants and variables
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////
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const int MAX_THREADS = 8;
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const int MAX_ACTIVE_SPLIT_POINTS = 8;
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////
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//// Types
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////
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struct SplitPoint {
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// Const data after splitPoint has been setup
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SplitPoint* parent;
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const Position* pos;
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Depth depth;
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bool pvNode, mateThreat;
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Value beta;
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int ply;
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Move threatMove;
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SearchStack sstack[MAX_THREADS][PLY_MAX_PLUS_2];
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// Const pointers to shared data
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MovePicker* mp;
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SearchStack* parentSstack;
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// Shared data
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Lock lock;
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volatile int64_t nodes;
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volatile Value alpha;
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volatile Value bestValue;
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volatile int moveCount;
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volatile bool stopRequest;
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volatile int slaves[MAX_THREADS];
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};
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// ThreadState type is used to represent thread's current state
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enum ThreadState
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{
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THREAD_INITIALIZING, // thread is initializing itself
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THREAD_SEARCHING, // thread is performing work
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THREAD_AVAILABLE, // thread is waiting for work
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THREAD_BOOKED, // other thread (master) has booked us as a slave
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THREAD_WORKISWAITING, // master has ordered us to start
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THREAD_TERMINATED // we are quitting and thread is terminated
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};
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struct Thread {
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volatile ThreadState state;
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SplitPoint* volatile splitPoint;
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volatile int activeSplitPoints;
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SplitPoint splitPoints[MAX_ACTIVE_SPLIT_POINTS];
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};
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#endif // !defined(THREAD_H_INCLUDED)
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