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posix::basic_descriptor::wait (2 of 2 overloads)

Wait for the descriptor to become ready to read, ready to write, or to have pending error conditions.

void wait(
    wait_type w,
    boost::system::error_code & ec);

This function is used to perform a blocking wait for a descriptor to enter a ready to read, write or error condition state.



Specifies the desired descriptor state.


Set to indicate what error occurred, if any.


Waiting for a descriptor to become readable.

boost::asio::posix::stream_descriptor descriptor(my_context);
boost::system::error_code ec;
descriptor.wait(boost::asio::posix::stream_descriptor::wait_read, ec);