/*
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
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 .
*/
#ifndef THREAD_H_INCLUDED
#define THREAD_H_INCLUDED
#include
#include
#include
#include
#include
#include
#include "material.h"
#include "movepick.h"
#include "pawns.h"
#include "position.h"
#include "search.h"
#include "thread_win32.h"
/// Thread struct keeps together all the thread related stuff. We also use
/// per-thread pawn and material hash tables so that once we get a pointer to an
/// entry its life time is unlimited and we don't have to care about someone
/// changing the entry under our feet.
struct Thread : public std::thread {
Thread();
virtual ~Thread();
virtual void search();
void idle_loop();
void join();
void notify_one();
void wait(std::atomic_bool& b);
std::atomic_bool exit, searching, resetCalls;
Mutex mutex;
ConditionVariable sleepCondition;
Pawns::Table pawnsTable;
Material::Table materialTable;
Endgames endgames;
size_t idx, PVIdx;
int maxPly, callsCnt;
Position rootPos;
Search::RootMoveVector rootMoves;
Depth rootDepth;
HistoryStats history;
MovesStats counterMoves;
Depth completedDepth;
};
/// MainThread is a derived classes used to characterize the the main one
struct MainThread : public Thread {
virtual void search();
};
/// ThreadPool struct handles all the threads related stuff like init, starting,
/// parking and, most importantly, launching a thread.
/// All the access to shared thread data is done through this class.
struct ThreadPool : public std::vector {
void init(); // No constructor and destructor, threads rely on globals that should
void exit(); // be initialized and valid during the whole thread lifetime.
MainThread* main() { return static_cast(at(0)); }
void read_uci_options();
void start_thinking(const Position&, const Search::LimitsType&, Search::StateStackPtr&);
int64_t nodes_searched();
};
extern ThreadPool Threads;
#endif // #ifndef THREAD_H_INCLUDED