基于boost实现的共享内存版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; }