Parallel iteration

Member types concurrent_hash_map::range_type and concurrent_hash_map::const_range_type meet the ContainerRange requirements.

These types differ only in that the bounds for a concurrent_hash_map::const_range_type are of type concurrent_hash_map::const_iterator, whereas the bounds for a concurrent_hash_map::range_type are of type concurrent_hash_map::iterator.

Traversing the concurrent_hash_map is not thread safe. The behavior is undefined in case of concurrent execution of any member functions while traversing the range_type or const_range_type.

range member function

range_type range( std::size_t grainsize = 1 );

const_range_type range( std::size_t grainsize = 1 ) const;

Returns: a range object representing all elements in the container.