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Remove TranspositionTable::overwrites variable

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Doesn't provide useful information and
can cause slowdown with many Threads.

No functional change

Signed-off-by: Marco Costalba <mcostalba@gmail.com>
This commit is contained in:
Joona Kiiski
2010-07-11 20:22:30 +03:00
committed by Marco Costalba
parent 2adbb80b8b
commit 00e86078a5
3 changed files with 3 additions and 26 deletions
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7
src/tt.h
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@@ -113,16 +113,9 @@ public:
void new_search();
void insert_pv(const Position& pos, Move pv[]);
void extract_pv(const Position& pos, Move bestMove, Move pv[], const int PLY_MAX);
int full() const;
TTEntry* first_entry(const Key posKey) const;
private:
// Be sure 'overwrites' is at least one cache line away
// from read only variables.
unsigned char pad_before[64 - sizeof(unsigned)];
unsigned overwrites; // heavy SMP read/write access here
unsigned char pad_after[64];
size_t size;
TTCluster* entries;
uint8_t generation;