Boost C++ Libraries

...one of the most highly regarded and expertly designed C++ library projects in the world. — Herb Sutter and Andrei Alexandrescu, C++ Coding Standards

basic_file::basic_file (7 of 10 overloads)

Construct a basic_file on an existing native file handle.

basic_file(
    const executor_type & ex,
    const native_handle_type & native_file);

This constructor initialises a file object to hold an existing native file.

Parameters

ex: The I/O executor that the file will use, by default, to dispatch handlers for any asynchronous operations performed on the file.
native_file: A native file handle.

Exceptions

boost::system::system_error: Thrown on failure.