-struct Thread {
- SplitPoint *splitPoint;
- volatile int activeSplitPoints;
- uint64_t nodes;
- uint64_t betaCutOffs[2];
- volatile bool stopRequest;
- volatile bool running;
- volatile bool idle;
- volatile bool sleeping;
- volatile bool workIsWaiting;
- volatile bool printCurrentLineRequest;
- unsigned char pad[64]; // set some distance among local data for each thread
+/// MainThread and TimerThread are derived classes used to characterize the two
+/// special threads: the main one and the recurring timer.
+
+struct MainThread : public Thread {
+ MainThread() { thinking = true; } // Avoid a race with start_thinking()
+ virtual void idle_loop();
+ void join();
+ void think();
+ std::atomic<bool> thinking;
+};
+
+struct TimerThread : public ThreadBase {
+
+ static const int Resolution = 5; // Millisec between two check_time() calls
+
+ virtual void idle_loop();
+ void check_time();
+
+ bool run = false;
+};
+
+
+/// 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<Thread*> {
+
+ 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<MainThread*>(at(0)); }
+ void read_uci_options();
+ void start_thinking(const Position&, const Search::LimitsType&, Search::StateStackPtr&);
+ int64_t nodes_searched();
+ TimerThread* timer;