Re: [boost] [Review.Coroutine] Vicente's review

Subject: Re: [boost] [Review.Coroutine] Vicente's review
From: Eugene Yakubovich (eyakubovich_at_[hidden])
Date: 2012-09-13 12:44:22

>>> Is the rationale for using self_t to get better performances?
>>> Maybe both interfaces could be provided.
>>
>> At least it would introduce additional indirections.
>>
>
> I agree that a thread specific pointer is not gratuitous, but adding the
> self_t parameter over the whole stack has its cost also.
>
> Providing both approaches would let the user choose which one is best
> adapted to her context.

I like not having the self parameter but using TLS can be slow. The
use of Boost's thread_specific_ptr (which uses pthread api) is
especially slow. Using gcc's __thread attribute is much faster (I
think that's acceptable performance wise) but this route will make it
harder to support all the compilers.

Regards,
Eugene