1/*
2 Stockfish, a UCI chess playing engine derived from Glaurung 2.1
3 Copyright (C) 2004-2008 Tord Romstad (Glaurung author)
4 Copyright (C) 2008-2015 Marco Costalba, Joona Kiiski, Tord Romstad
5 Copyright (C) 2015-2019 Marco Costalba, Joona Kiiski, Gary Linscott, Tord Romstad
6
7 Stockfish is free software: you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation, either version 3 of the License, or
10 (at your option) any later version.
11
12 Stockfish is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
16
17 You should have received a copy of the GNU General Public License
18 along with this program. If not, see <http://www.gnu.org/licenses/>.
19*/
20
21#ifndef TIMEMAN_H_INCLUDED
22#define TIMEMAN_H_INCLUDED
23
24#include "misc.h"
25#include "search.h"
26#include "thread.h"
27
28/// The TimeManagement class computes the optimal time to think depending on
29/// the maximum available time, the game move number and other parameters.
30
31class TimeManagement {
32public:
33 void init(Search::LimitsType& limits, Color us, int ply);
34 TimePoint optimum() const { return optimumTime; }
35 TimePoint maximum() const { return maximumTime; }
36 TimePoint elapsed() const { return Search::Limits.npmsec ?
37 TimePoint(Threads.nodes_searched()) : now() - startTime; }
38
39 int64_t availableNodes; // When in 'nodes as time' mode
40
41private:
42 TimePoint startTime;
43 TimePoint optimumTime;
44 TimePoint maximumTime;
45};
46
47extern TimeManagement Time;
48
49#endif // #ifndef TIMEMAN_H_INCLUDED
50