Add support for Windows large pages

[stockfish] / src / tt.cpp

diff --git a/src/tt.cpp b/src/tt.cpp
index 0b4a59de55915962e7ed9409ae462be2556366f3..6ee63138d15497851843ce114108cddba262151e 100644 (file)
--- a/src/tt.cpp
+++ b/src/tt.cpp
@@ -63,11 +63,17 @@ void TranspositionTable::resize(size_t mbSize) {
 
   Threads.main()->wait_for_search_finished();
 
-  clusterCount = mbSize * 1024 * 1024 / sizeof(Cluster);
+  if (mem)
+      aligned_ttmem_free(mem);
 
-  free(mem);
-  mem = malloc(clusterCount * sizeof(Cluster) + CacheLineSize - 1);
+  if (!mbSize)
+  {
+      mem = nullptr;
+      return;
+  }
 
+  clusterCount = mbSize * 1024 * 1024 / sizeof(Cluster);
+  table = static_cast<Cluster*>(aligned_ttmem_alloc(clusterCount * sizeof(Cluster), mem));
   if (!mem)
   {
       std::cerr << "Failed to allocate " << mbSize
@@ -75,7 +81,6 @@ void TranspositionTable::resize(size_t mbSize) {
       exit(EXIT_FAILURE);
   }
 
-  table = (Cluster*)((uintptr_t(mem) + CacheLineSize - 1) & ~(CacheLineSize - 1));
   clear();
 }
 
@@ -150,9 +155,9 @@ TTEntry* TranspositionTable::probe(const Key key, bool& found) const {
 int TranspositionTable::hashfull() const {
 
   int cnt = 0;
-  for (int i = 0; i < 1000 / ClusterSize; ++i)
+  for (int i = 0; i < 1000; ++i)
       for (int j = 0; j < ClusterSize; ++j)
           cnt += (table[i].entry[j].genBound8 & 0xF8) == generation8;
 
-  return cnt * 1000 / (ClusterSize * (1000 / ClusterSize));
+  return cnt / ClusterSize;
 }