const size_t MAX_SPLITPOINTS_PER_THREAD = 8;
const size_t MAX_SLAVES_PER_SPLITPOINT = 4;
-
+#if 0
/// Spinlock class wraps low level atomic operations to provide a spin lock
class Spinlock {
void release() { lock.store(1, std::memory_order_release); }
};
+#else
+
+class Spinlock {
+
+ std::mutex mutex;
+
+public:
+ void acquire() { mutex.lock(); }
+ void release() { mutex.unlock(); }
+};
+
+#endif
/// SplitPoint struct stores information shared by the threads searching in
/// parallel below the same split point. It is populated at splitting time.
Thread();
virtual void idle_loop();
bool cutoff_occurred() const;
- bool available_to(const Thread* master) const;
+ bool can_join(const SplitPoint* sp) const;
void split(Position& pos, Search::Stack* ss, Value alpha, Value beta, Value* bestValue, Move* bestMove,
Depth depth, int moveCount, MovePicker* movePicker, int nodeType, bool cutNode);
MainThread* main() { return static_cast<MainThread*>(at(0)); }
void read_uci_options();
- Thread* available_slave(const Thread* master) const;
+ Thread* available_slave(const SplitPoint* sp) const;
void wait_for_think_finished();
void start_thinking(const Position&, const Search::LimitsType&, Search::StateStackPtr&);