X-Git-Url: https://git.sesse.net/?p=stockfish;a=blobdiff_plain;f=src%2Fthread.h;h=ad40a34146bbd8e8b8fe0f80be4dcc23b5dd7d44;hp=4b712076083b701ee23183e9a352d0ecfc2b6da6;hb=7a2825053e3eb5204e6b45d0cadb9264e77ac69f;hpb=c483ffc773c012b49f4ea2f5bd1d788c1f0dc4ac diff --git a/src/thread.h b/src/thread.h index 4b712076..ad40a341 100644 --- a/src/thread.h +++ b/src/thread.h @@ -20,7 +20,6 @@ #if !defined(THREAD_H_INCLUDED) #define THREAD_H_INCLUDED -#include #include #include "material.h" @@ -32,6 +31,8 @@ const int MAX_THREADS = 32; const int MAX_SPLITPOINTS_PER_THREAD = 8; +class Thread; + struct SplitPoint { // Const data after split point has been setup @@ -40,14 +41,13 @@ struct SplitPoint { Depth depth; Value beta; int nodeType; - int master; + Thread* master; Move threatMove; // Const pointers to shared data MovePicker* mp; SplitPoint* parent; - // Shared data Lock lock; volatile uint64_t slavesMask; @@ -67,28 +67,24 @@ struct SplitPoint { class Thread { - Thread(const Thread&); // Only declared to disable the default ones - Thread& operator=(const Thread&); // that are not suitable in this case. - - typedef void (Thread::* Fn) (); + typedef void (Thread::* Fn) (); // Pointer to member function public: Thread(Fn fn); - ~Thread(); + ~Thread(); void wake_up(); bool cutoff_occurred() const; - bool is_available_to(int master) const; - void idle_loop(SplitPoint* sp_master); - void idle_loop() { idle_loop(NULL); } // Hack to allow storing in start_fn + bool is_available_to(Thread* master) const; + void idle_loop(); void main_loop(); void timer_loop(); void wait_for_stop_or_ponderhit(); SplitPoint splitPoints[MAX_SPLITPOINTS_PER_THREAD]; - MaterialInfoTable materialTable; - PawnInfoTable pawnTable; - int threadID; + MaterialTable materialTable; + PawnTable pawnTable; + size_t idx; int maxPly; Lock sleepLock; WaitCondition sleepCond; @@ -102,32 +98,30 @@ public: }; -/// ThreadsManager class handles all the threads related stuff like init, starting, +/// ThreadPool class 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 ThreadsManager { - /* As long as the single ThreadsManager object is defined as a global we don't - need to explicitly initialize to zero its data members because variables with - static storage duration are automatically set to zero before enter main() - */ +class ThreadPool { + public: - void init(); - void exit(); + void init(); // No c'tor, Threads object is global and engine shall be fully initialized + ~ThreadPool(); - Thread& operator[](int id) { return *threads[id]; } + Thread& operator[](size_t id) { return *threads[id]; } bool use_sleeping_threads() const { return useSleepingThreads; } int min_split_depth() const { return minimumSplitDepth; } - int size() const { return (int)threads.size(); } + size_t size() const { return threads.size(); } + Thread* main_thread() { return threads[0]; } - void wake_up(); - void sleep(); + void wake_up() const; + void sleep() const; void read_uci_options(); - bool available_slave_exists(int master) const; + bool available_slave_exists(Thread* master) const; void set_timer(int msec); - void stop_thinking(); - void start_thinking(const Position& pos, const Search::LimitsType& limits, - const std::set& = std::set(), bool async = false); + void wait_for_search_finished(); + void start_searching(const Position& pos, const Search::LimitsType& limits, + const std::vector& searchMoves); template Value split(Position& pos, Search::Stack* ss, Value alpha, Value beta, Value bestValue, Move* bestMove, @@ -144,6 +138,6 @@ private: bool useSleepingThreads; }; -extern ThreadsManager Threads; +extern ThreadPool Threads; #endif // !defined(THREAD_H_INCLUDED)