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Properly initialize the TT in a multithreaded way again

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Disservin 2024-06-04 07:53:25 +02:00
parent ba06671aa9
commit 7f09d06b83
2 changed files with 7 additions and 4 deletions
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4
src/tt.cpp
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@ -75,9 +75,11 @@ uint8_t TTEntry::relative_age(const uint8_t generation8) const {
// measured in megabytes. Transposition table consists
// of clusters and each cluster consists of ClusterSize number of TTEntry.
void TranspositionTable::resize(size_t mbSize, ThreadPool& threads) {
aligned_large_pages_free(table);
clusterCount = mbSize * 1024 * 1024 / sizeof(Cluster);
table = make_unique_large_page<Cluster[]>(clusterCount);
table = static_cast<Cluster*>(aligned_large_pages_alloc(clusterCount * sizeof(Cluster)));
if (!table)
{

7
src/tt.h
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@ -96,6 +96,7 @@ class TranspositionTable {
static constexpr int GENERATION_MASK = (0xFF << GENERATION_BITS) & 0xFF;
public:
~TranspositionTable() { aligned_large_pages_free(table); }
void new_search() {
// increment by delta to keep lower bits as is
generation8 += GENERATION_DELTA;
@ -115,9 +116,9 @@ class TranspositionTable {
private:
friend struct TTEntry;
size_t clusterCount;
LargePagePtr<Cluster[]> table;
uint8_t generation8 = 0; // Size must be not bigger than TTEntry::genBound8
size_t clusterCount;
Cluster* table = nullptr;
uint8_t generation8 = 0; // Size must be not bigger than TTEntry::genBound8
};
} // namespace Stockfish