X-Git-Url: https://git.sesse.net/?p=stockfish;a=blobdiff_plain;f=src%2Fthread.h;h=46c40d9bfdab92e3fe3d655f4d50e03629511c3a;hp=7df9f241e4a64d55d7e3499ca7ad5bb7d1114948;hb=3b8f66f8accefe86db9296fa276e4b33cdc450e2;hpb=6950d07bf421b122ccb5a15a2ed4fa3a993d9609 diff --git a/src/thread.h b/src/thread.h index 7df9f241..46c40d9b 100644 --- a/src/thread.h +++ b/src/thread.h @@ -1,7 +1,7 @@ /* Stockfish, a UCI chess playing engine derived from Glaurung 2.1 Copyright (C) 2004-2008 Tord Romstad (Glaurung author) - Copyright (C) 2008-2012 Marco Costalba, Joona Kiiski, Tord Romstad + Copyright (C) 2008-2013 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 @@ -63,19 +63,19 @@ struct SplitPoint { // Const data after split point has been setup const Position* pos; const Search::Stack* ss; - Thread* master; + Thread* masterThread; Depth depth; Value beta; int nodeType; Move threatMove; + bool cutNode; // Const pointers to shared data - MovePicker* mp; - SplitPoint* parent; + MovePicker* movePicker; + SplitPoint* parentSplitPoint; // Shared data Mutex mutex; - Position* slavesPositions[MAX_THREADS]; volatile uint64_t slavesMask; volatile int64_t nodes; volatile Value alpha; @@ -102,10 +102,15 @@ struct Thread { bool is_available_to(Thread* master) const; void wait_for(volatile const bool& b); + template + void split(Position& pos, Search::Stack* ss, Value alpha, Value beta, Value* bestValue, Move* bestMove, + Depth depth, Move threatMove, int moveCount, MovePicker* movePicker, int nodeType, bool cutNode); + SplitPoint splitPoints[MAX_SPLITPOINTS_PER_THREAD]; Material::Table materialTable; Endgames endgames; Pawns::Table pawnsTable; + Position* activePosition; size_t idx; int maxPly; Mutex mutex; @@ -134,40 +139,28 @@ struct TimerThread : public Thread { }; -/// ThreadPool class handles all the threads related stuff like init, starting, +/// ThreadPool struct handles all the threads related stuff like init, starting, /// parking and, the most important, launching a slave thread at a split point. /// All the access to shared thread data is done through this class. -class ThreadPool { +struct ThreadPool : public std::vector { -public: void init(); // No c'tor and d'tor, threads rely on globals that should void exit(); // be initialized and valid during the whole thread lifetime. - Thread& operator[](size_t id) { return *threads[id]; } - size_t size() const { return threads.size(); } - MainThread* main_thread() { return static_cast(threads[0]); } - TimerThread* timer_thread() { return timer; } - + MainThread* main_thread() { return static_cast((*this)[0]); } void read_uci_options(); - bool slave_available(Thread* master) const; + Thread* available_slave(Thread* master) const; void wait_for_think_finished(); void start_thinking(const Position&, const Search::LimitsType&, - const std::vector&, Search::StateStackPtr&); - - template - Value split(Position& pos, Search::Stack* ss, Value alpha, Value beta, Value bestValue, Move* bestMove, - Depth depth, Move threatMove, int moveCount, MovePicker& mp, int nodeType); + const std::vector&, Search::StateStackPtr&); bool sleepWhileIdle; Depth minimumSplitDepth; + size_t maxThreadsPerSplitPoint; Mutex mutex; ConditionVariable sleepCondition; - -private: - std::vector threads; TimerThread* timer; - size_t maxThreadsPerSplitPoint; }; extern ThreadPool Threads;