Align the block_size to a power of 2 on Windows.

estraier · Oct 26, 2024 · c884c8d · c884c8d
1 parent ba89aa1
commit c884c8d
Showing 1 changed file with 4 additions and 2 deletions.
diff --git a/tkrzw_sys_file_pos_windows.h b/tkrzw_sys_file_pos_windows.h
@@ -425,7 +425,8 @@ Status PositionalParallelFileImpl::SetAccessStrategy(int64_t block_size, int32_t
   if (file_handle_ != nullptr) {
     return Status(Status::PRECONDITION_ERROR, "alread opened file");
   }
-  block_size_ = block_size;
+  block_size_ = block_size > 1 ?
+      AlignNumberPowTwo(std::max<int64_t>(sizeof(void*), block_size)) : 1;
   access_options_ = options;
   return Status(Status::SUCCESS);
 }
@@ -1112,7 +1113,8 @@ Status PositionalAtomicFileImpl::SetAccessStrategy(int64_t block_size, int32_t o
   if (file_handle_ != nullptr) {
     return Status(Status::PRECONDITION_ERROR, "alread opened file");
   }
-  block_size_ = block_size;
+  block_size_ = block_size > 1 ?
+      AlignNumberPowTwo(std::max<int64_t>(sizeof(void*), block_size)) : 1;
   access_options_ = options;
   return Status(Status::SUCCESS);
 }