|  | Home | Libraries | People | FAQ | More | 
        A handler must meet the requirements of MoveConstructible types
        (C++Std [moveconstructible]).
      
        In the table below, X denotes a handler class, h
        denotes a value of X, p denotes a pointer to a
        block of allocated memory of type void*, s denotes
        the size for a block of allocated memory, and f denotes a function
        object taking no arguments.
      
Table 21. Handler requirements
| expression | return type | 
                  assertion/note | 
|---|---|---|
| 
 using boost::asio::asio_handler_allocate; asio_handler_allocate(s, &h); 
 | 
                   | 
                  Returns a pointer to a block of memory of size  | 
| 
 using boost::asio::asio_handler_deallocate; asio_handler_deallocate(p, s, &h); 
 | 
                  Frees a block of memory associated with a pointer  | |
| 
 using boost::asio::asio_handler_invoke; asio_handler_invoke(f, &h); 
 | 
                  Causes the function object  |