If the option is not specified, the \p %opt::less is used.
- \p opt::less - specifies binary predicate used for key comparison. Default is \p std::less<T>.
- \p opt::item_counter - item counter type. Default is \p atomicity::item_counter since some operation on the counter is performed
- without locks. Note that item counting is an essential part of the map algorithm, so dummy counter
+ without locks. Note that item counting is an essential part of the map algorithm, so dummy counter
like as \p atomicity::empty_item_counter is not suitable.
- \p opt::allocator - the allocator type using for memory allocation of bucket table and lock array. Default is \ref CDS_DEFAULT_ALLOCATOR.
- \p opt::resizing_policy - the resizing policy that is a functor that decides when to resize the hash map.