Re: [Boost-users] [asio] Correct handler signature for io_service::post/dispatch

Subject: Re: [Boost-users] [asio] Correct handler signature for io_service::post/dispatch
From: Igor R (boost.lists_at_[hidden])
Date: 2012-05-20 11:08:34

> Currently I'm developing a server that uses Boost.Asio, version 1.49. It
> makes use of io_service::post and io_service::dispatch to invoke handlers
> running in the same process, but on different threads. Some of the handlers
> invoke a function with the following signature:
>
> Â void handler(std::string s);
>
> This works fine and no problems have  been observed. However, subsequently I
> read in the asio documentation that the function signature of a handler
> invoked by post/dispatch *must* be in the following format:
>
> Â void handler();
>
> Is my code working by chance or is the asio version 1.49 documentation out of date?

io_service::post() accepts nullary functors. So if your handler accept
parameters, I guess you bind them at when posting the handler, don't
you.