c++ - Custom Boost Asio IO object -

i new boost asio. i've read comparison: how libuv compare boost/asio?

turned out there opportunity use asio's event loop other reasons socket programming. planning use async event loop processing messages coming ui.
far have concurrent queue , implement own boost::asio io object. goal use object can see here:

#include <iostream> #include <boost/asio.hpp> #include "mprocessor.h" #include "concurrent_queue.h"  void foo(const boost::system::error_code& /*e*/) {   std::cout << "got message" << std::endl; }  int main() {   concurrent_queue<int> messages;   /* ... */   boost::asio::io_service io;    mprocessor t(io, &messages);   t.async_wait(&foo);    io.run();    return 0; } 

so aim keep busy io_service io object able call function asynchronously (foo), when queue (messages) has message can popped. queue has method called wait_and_pop. blocks caller thread until queue has pop, returns popped item value.
stucked @ point, , couldn't find boost asio tutorial online without sockects. there similar questions, use sockets. idea how implement own io object? or missing important obstacles? thank much!