|  | 
        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