121   volatile bool _needs_rehashing;

   121   volatile bool _needs_rehashing;

   122 

   122 

   123   volatile size_t _items_count;

   123   volatile size_t _items_count;

   124   volatile size_t _uncleaned_items_count;

   124   volatile size_t _uncleaned_items_count;

   125 

   125 

   128 

   128 

   129   void check_concurrent_work();

   129   void check_concurrent_work();

   130   void trigger_concurrent_work();

   130   void trigger_concurrent_work();

   131 

   131 

   132   static void item_added();

   132   static void item_added();