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posix::basic_descriptor::native_non_blocking (3 of 3 overloads)

Sets the non-blocking mode of the native descriptor implementation.

boost::system::error_code native_non_blocking(
    bool mode,
    boost::system::error_code & ec);

This function is used to modify the non-blocking mode of the underlying native descriptor. It has no effect on the behaviour of the descriptor object's synchronous operations.

Parameters

mode

If true, the underlying descriptor is put into non-blocking mode and direct system calls may fail with boost::asio::error::would_block (or the equivalent system error).

ec

Set to indicate what error occurred, if any. If the mode is false, but the current value of non_blocking() is true, this function fails with boost::asio::error::invalid_argument, as the combination does not make sense.


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