Re: [Boost-users] [Thread] Constructing a move-only object asyncronously

Subject: Re: [Boost-users] [Thread] Constructing a move-only object asyncronously
From: Alexander Lamaison (awl03_at_[hidden])
Date: 2013-03-19 15:30:35

"Vicente J. Botet Escriba" <vicente.botet_at_[hidden]> writes:

> Le 19/03/13 19:40, Alexander Lamaison a écrit :
>> I'm trying to create a move-only object asyncronously using Boost.Thread
>> unique_future but I'm running into trouble:
>>
>> error C2248: 'A::A' : cannot access private member declared in class 'A'
>> c:\users\awl03\documents\visual studio
>> 2005\projects\boost_1_51_0\boost\thread\future.hpp	493
>>
>> I've tried all sorts of ways to work around this but always end up with
>> some variation or other of this error message.  What am I doing wrong?
>>

snip

> you need to use version 4 to got this functionality.

I assume this requires Boost 1.53?

> I have modified your example to use boost::future (*) and use
> packaged_task with a signature parameter (**). With this change it to
> works for the following toolsets.

Thanks!  Can you give me an idea of what changed in v4 to enable this?
I've looked through the history but nothing stands out.

I tried to make it work using just class thread rather than anything in
<future.hpp>, but I couldn't work out how for a non-default
constructible class.

Alex

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