#include "pawns.h"
#include "position.h"
#include "search.h"
+#include "thread_win32.h"
struct Thread;
const size_t MAX_SPLITPOINTS_PER_THREAD = 8;
const size_t MAX_SLAVES_PER_SPLITPOINT = 4;
+
/// SplitPoint struct stores information shared by the threads searching in
/// parallel below the same split point. It is populated at splitting time.
SplitPoint* parentSplitPoint;
// Shared variable data
- std::mutex mutex;
+ Mutex mutex;
std::bitset<MAX_THREADS> slavesMask;
volatile bool allSlavesSearching;
volatile uint64_t nodes;
};
-/// Spinlock class wraps low level atomic operations to provide spin lock functionality
-
-class Spinlock {
-
- std::atomic_flag lock;
-
-public:
- Spinlock() { std::atomic_flag_clear(&lock); }
- void acquire() { while (lock.test_and_set(std::memory_order_acquire)) {} }
- void release() { lock.clear(std::memory_order_release); }
-};
-
-
/// ThreadBase struct is the base of the hierarchy from where we derive all the
/// specialized thread classes.
void wait_for(volatile const bool& b);
std::thread nativeThread;
- std::mutex mutex;
- std::condition_variable sleepCondition;
+ Mutex mutex;
+ ConditionVariable sleepCondition;
volatile bool exit = false;
};
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&);
Depth minimumSplitDepth;
- std::mutex mutex;
- std::condition_variable sleepCondition;
+ ConditionVariable sleepCondition;
TimerThread* timer;
};