Class template iunordered_set_index

Boost C++ Libraries

Class template iunordered_set_index

boost::interprocess::iunordered_set_index

Synopsis

// In header: <boost/interprocess/indexes/iunordered_set_index.hpp>

template<typename MapConfig> 
class iunordered_set_index : private iunordered_set_index_aux::allocator_holder< MapConfig >,
                             public iunordered_set_index_aux::index_t< MapConfig >
{
public:
  // types
  typedef index_type::iterator           iterator;          
  typedef index_type::const_iterator     const_iterator;    
  typedef index_type::insert_commit_data insert_commit_data;
  typedef index_type::value_type         value_type;        
  typedef index_type::bucket_ptr         bucket_ptr;        
  typedef index_type::bucket_type        bucket_type;       
  typedef index_type::bucket_traits      bucket_traits;     
  typedef index_type::size_type          size_type;         

  // construct/copy/destruct
  iunordered_set_index(segment_manager_base *);
  ~iunordered_set_index();

  // public member functions
  void reserve(size_type);
  void shrink_to_fit();
  iterator find(const intrusive_compare_key_type &);
  const_iterator find(const intrusive_compare_key_type &) const;
  std::pair< iterator, bool > 
  insert_check(const intrusive_compare_key_type &, insert_commit_data &);
  iterator insert_commit(value_type &, insert_commit_data &);
};

Description

Index type based in boost::intrusive::set. Just derives from boost::intrusive::set and defines the interface needed by managed memory segments

`iunordered_set_index` public construct/copy/destruct

```
iunordered_set_index(segment_manager_base * mngr);
```
Constructor. Takes a pointer to the segment manager. Can throw
```
~iunordered_set_index();
```

`iunordered_set_index` public member functions

```
void reserve(size_type new_n);
```
This reserves memory to optimize the insertion of n elements in the index
```
void shrink_to_fit();
```
This tries to free unused memory previously allocated.

iterator find(const intrusive_compare_key_type & key);

const_iterator find(const intrusive_compare_key_type & key) const;

std::pair< iterator, bool > 
insert_check(const intrusive_compare_key_type & key, 
             insert_commit_data & commit_data);

iterator insert_commit(value_type & val, insert_commit_data & commit_data);