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        The posix::descriptor_base
        class is used as a base for the descriptor class as a place to define the
        associated IO control commands.
      
class descriptor_base
| 
                 Name  | 
                 Description  | 
|---|---|
| 
                 IO control command to get the amount of data that can be read without blocking.  | 
|
| 
                 Wait types.  | 
| 
                 Name  | 
                 Description  | 
|---|---|
| 
                 ~descriptor_base [destructor]  | 
                 Protected destructor to prevent deletion through this type.  | 
        Header: asio/posix/descriptor_base.hpp
      
        Convenience header: asio.hpp