Function main

example/cpp20/invocation/completion_executor.cpp:54–83

//----------------------------------------------------------------------

int main()
{
  boost::asio::io_context io_context(1);

  // Post a completion handler to be run immediately.
  boost::asio::post(io_context,
      boost::asio::bind_executor(logging_executor{},
        []{ std::cout << "post complete\n"; }));

  // Start an asynchronous accept that will complete immediately.
  tcp::endpoint endpoint(boost::asio::ip::address_v4::loopback(), 0);
  tcp::acceptor acceptor(io_context, endpoint);
  tcp::socket server_socket(io_context);
  acceptor.async_accept(
      boost::asio::bind_executor(logging_executor{},
        [](auto...){ std::cout << "async_accept complete\n"; }));
  tcp::socket client_socket(io_context);
  client_socket.connect(acceptor.local_endpoint());

  // Set a timer to expire immediately.
  boost::asio::steady_timer timer(io_context);
  timer.expires_at(boost::asio::steady_timer::clock_type::time_point::min());
  timer.async_wait(
      boost::asio::bind_executor(logging_executor{},
        [](auto){ std::cout << "async_wait complete\n"; }));

  io_context.run();

  return 0;
}