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

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

void native_non_blocking(
    bool mode,
    asio::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 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 asio::error::invalid_argument, as the combination does not make sense.