Re: [boost] [asio] my review

From: Christopher Kohlhoff (chris_at_[hidden])
Date: 2005-12-12 18:58:10

--- Felipe Magno de Almeida <felipe.m.almeida_at_[hidden]> wrote:
<snip>
> You think every functor should be executed exactly-once for correct
> program design?
> Wouldnt this still be safe?
> 
> class handler
> {
>   void fail(asio::error err)
>   {
>     // handle the error case, and probably delete this handle, or
> reuse it for retrying
>   }
> 
>   void success(int size)
>   {
>     // do something, or continue reading or delete this
>   }
> // member variables
> 
> public:
>   handler()
>   {
>     async_read(s, buffers,
>       combine_handlers(
>         boost::bind(boost::mem_fn(&handler::success), this)
>         , boost::bind(boost::mem_fn(&handler::fail), this)
>       ));
>   }
> };

Of course, you're right, and there's nothing unsafe with the above.
Somehow I had the idea that you wanted to share the same error handler
between multiple asynchronous operations as the default behaviour.

Cheers,
CHris