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: Gary Sanders (lex21_at_[hidden])
Date: 2012-05-20 11:52:41

On 20/05/2012 16:08, Igor R wrote:
>> 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:
>>
>>   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:
>>
>>   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 Is my code working by chance or is the asio version 1.49 documentation out of date?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.
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Yes, this is the sort of thing that I'm doing and that I find to be 
working OK.

   ios.post(boost::bind(&MyClass::Handler,ptr_to_my_class,"astring"));

So, this is OK?