/*
Stockfish, a UCI chess playing engine derived from Glaurung 2.1
- Copyright (C) 2004-2008 Tord Romstad (Glaurung author)
- Copyright (C) 2008-2015 Marco Costalba, Joona Kiiski, Tord Romstad
+ Copyright (C) 2004-2023 The Stockfish developers (see AUTHORS file)
Stockfish is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
#ifndef TIMEMAN_H_INCLUDED
#define TIMEMAN_H_INCLUDED
+#include <cstdint>
+
#include "misc.h"
#include "search.h"
+#include "thread.h"
+#include "types.h"
-/// The TimeManagement class computes the optimal time to think depending on
-/// the maximum available time, the game move number and other parameters.
+namespace Stockfish {
+// The TimeManagement class computes the optimal time to think depending on
+// the maximum available time, the game move number, and other parameters.
class TimeManagement {
-public:
- void init(Search::LimitsType& limits, Color us, int ply, TimePoint now);
- void pv_instability(double bestMoveChanges) { unstablePvFactor = 1 + bestMoveChanges; }
- int available() const { return int(optimumTime * unstablePvFactor * 0.76); }
- int maximum() const { return maximumTime; }
- int elapsed() const { return int(Search::Limits.npmsec ? Search::RootPos.nodes_searched() : now() - start); }
-
- int64_t availableNodes; // When in 'nodes as time' mode
-
-private:
- TimePoint start;
- int optimumTime;
- int maximumTime;
- double unstablePvFactor;
+ public:
+ void init(Search::LimitsType& limits, Color us, int ply);
+ TimePoint optimum() const { return optimumTime; }
+ TimePoint maximum() const { return maximumTime; }
+ TimePoint elapsed() const {
+ return Search::Limits.npmsec ? TimePoint(Threads.nodes_searched()) : now() - startTime;
+ }
+
+ int64_t availableNodes; // When in 'nodes as time' mode
+
+ private:
+ TimePoint startTime;
+ TimePoint optimumTime;
+ TimePoint maximumTime;
};
extern TimeManagement Time;
-#endif // #ifndef TIMEMAN_H_INCLUDED
+} // namespace Stockfish
+
+#endif // #ifndef TIMEMAN_H_INCLUDED