transpositiontable.h

#ifndef TRANSPOSITIONTABLE_H
#define TRANSPOSITIONTABLE_H
#include "defines.h"
#include "hashentry.h"
#include "spinlock.h"
#include <mutex>
#include <atomic>

namespace Napoleon
{
    class TranspositionTable
    {
        public:
            static const int Unknown;
            static const int BucketSize;

            TranspositionTable() = default;
            TranspositionTable(int size);

            void SetSize(int);
            void Save(ZobristKey, Byte, Byte, int, Move, ScoreType);
            void Clear();
            std::pair<int, Move> Probe(ZobristKey, Byte, Byte, int, int);
            Move GetPv(ZobristKey);

            bool Concurrent = false;
        private:
            unsigned long long mask;
            unsigned long entries;
            unsigned long lock_entries;
            HashEntry* table;
            SpinLock* locks;
            HashEntry* at(ZobristKey, int = 0) const;
    };

    inline HashEntry* TranspositionTable::at(ZobristKey key, int index) const
    {
        return table + (key & mask) + index;
    }

}

#endif // TRANSPOSITIONTABLE_H