Boost-based shared-memory HashMap

Boost-based shared-memory HashMap

#include 
 
  #include 
  
   #include 
   
    #include 
    
     #include 
     
      int main (int argc, char *argv[]){    typedef int KeyType;    typedef float MappedType;    typedef std::pair
      
        ValueType; typedef boost::interprocess::allocator
       
         ShmAlloc; typedef boost::unordered_map
        
         , std::equal_to
         
          , ShmAlloc> ShmHashMap; boost::interprocess::managed_shared_memory segment(boost::interprocess::open_or_create, "ContainerSharedMemory", 65536); ShmHashMap *hash_map1 = segment.find_or_construct
          
           ("ShmHashMap1")(3, boost::hash
           
            (), std::equal_to
            
             (), segment.get_allocator
             
              ()); ShmHashMap *hash_map2 = segment.find_or_construct
              
               ("ShmHashMap2")(3, boost::hash
               
                (), std::equal_to
                
                 (), segment.get_allocator
                 
                  ()); for(int i = 0; i < 5; ++i) { ShmHashMap::iterator iter = hash_map1->find(i); if (iter != hash_map1->end()) { std::cout << "[ShmHashMap1]<" << i << ", " << iter->second << ">" << std::endl; iter->second += 1.0; } hash_map1->insert(ValueType(i, (MappedType)i)); } for(int i = 0; i < 5; ++i) { ShmHashMap::iterator iter = hash_map2->find(i); if (iter != hash_map2->end()) { std::cout << "[ShmHashMap2]<" << i << ", " << iter->second << ">" << std::endl; iter->second += 2.0; } hash_map2->insert(ValueType(i, (MappedType)i)); } return 0;}