Re: Empty option for testing archives

Hi Denis,

>
> the archive pointed to by 'a' is passed to both threads thus the same
> variable is modified by both threads at the same time. Morevoer, the
> archive::op_test method() is not a constant method, but OK, I am not
> sure that all const methods of the API can be used without mutex by
> different threads on the same object at the same time. I will double
> check this right now.
>
> To solve your problem I would create two archive objects (yes, memory
> will suffer) or avoid using concurrent thread here.

Is it possible to get a copy constructor for archive::archive? Better still, 
would it be possible to have an "archive archive::isolate()" function to 
obtain a copy of an isolated archive without writing it to disk? That would 
give an opportunity to run empty methods on a small copy of the archive in a 
concurrent thread.

> Regards,
> Denis.

Cheers,
JB


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