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49 lines
1.7 KiB
C++
49 lines
1.7 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) 2008-2015 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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#ifndef TIMEMAN_H_INCLUDED
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#define TIMEMAN_H_INCLUDED
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#include "misc.h"
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#include "search.h"
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/// The TimeManagement class computes the optimal time to think depending on
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/// the maximum available time, the game move number and other parameters.
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class TimeManagement {
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public:
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void init(Search::LimitsType& limits, Color us, int ply, TimePoint now);
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void pv_instability(double bestMoveChanges) { unstablePvFactor = 1 + bestMoveChanges; }
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int available() const { return int(optimumTime * unstablePvFactor * 0.76); }
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int maximum() const { return maximumTime; }
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int elapsed() const { return int(Search::Limits.npmsec ? Search::RootPos.nodes_searched() : now() - start); }
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int64_t availableNodes; // When in 'nodes as time' mode
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private:
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TimePoint start;
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int optimumTime;
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int maximumTime;
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double unstablePvFactor;
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};
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extern TimeManagement Time;
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#endif // #ifndef TIMEMAN_H_INCLUDED
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