/*
Stockfish, a UCI chess playing engine derived from Glaurung 2.1
Copyright (C) 2004-2008 Tord Romstad (Glaurung author)
- Copyright (C) 2008 Marco Costalba
+ Copyright (C) 2008-2009 Marco Costalba
Stockfish is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
~TranspositionTable();
void set_size(unsigned mbSize);
void clear();
- void store(const Position& pos, Value v, ValueType type, Depth d, Move m);
- TTEntry* retrieve(const Position& pos) const;
+ void store(const Key posKey, Value v, ValueType type, Depth d, Move m);
+ TTEntry* retrieve(const Key posKey) const;
void new_search();
void insert_pv(const Position& pos, Move pv[]);
+ void extract_pv(const Position& pos, Move pv[]);
int full() const;
private:
- inline TTEntry* first_entry(const Position& pos) const;
+ inline TTEntry* first_entry(const Key posKey) const;
- unsigned size, writes;
+ // Be sure 'writes' is at least one cacheline away
+ // from read only variables.
+ unsigned char pad_before[64 - sizeof(unsigned)];
+ unsigned writes; // heavy SMP read/write access here
+ unsigned char pad_after[64];
+
+ unsigned size;
TTEntry* entries;
uint8_t generation;
};