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Subject: Re: [boost] [any] new version
From: Mathias Gaunard (mathias.gaunard_at_[hidden])
Date: 2011-09-05 07:18:26

On 02/09/2011 20:58, Martin Bidlingmaier wrote:
> So there are actually two main issues that need to be taken care of:
> - 1. dlls
> I think a good solution would be to add a new class, e.g. as
> Andrey Semashev proposed 'local_any', that derives from the current
> version of any.
> The normal version could be used for inter dll passing, the new version
> when the user can assure that a local_any instance won't be passed between
> dlls.
> Conversion could be provided from local_any to any.

I don't think Boost libraries should be designed for a single platform.

> - 2. thread safety
> In c++03, variables defined at namespace scope are not necessarily
> initialized before main()

Yes they are.

> , so there could be data races for the
> previous_id in next_id() in multi threaded applications.

That's not namespace scope, that's function scope.

The C++11 standard (the only one aware of multithreading) mandates that
initialization of static variables at function scope is thread-safe.

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