Re: [boost] [MSM] Is there any interest in C++14 Boost.MSM-eUML like library which compiles up to 60x quicker whilst being a slightly faster too?

Subject: Re: [boost] [MSM] Is there any interest in C++14 Boost.MSM-eUML like library which compiles up to 60x quicker whilst being a slightly faster too?
From: Kris (krzysztof_at_[hidden])
Date: 2016-02-03 16:28:02

On Wed, Feb 3, 2016 at 8:51 PM, Christophe Henry-2 [via Boost] <
ml-node+s2283326n4683176h75_at_[hidden]> wrote:

> >I added a simple benchmark using Boost.MSM3-eUML2 to the performance
> tests.
> >Results can be found here ->
> >
> http://boost-experimental.github.io/msm-lite/overview/index.html#performance
> >
> >It seems that Boost.MSM3-eUML2 (not sure what is the proper name?)
> compiles
> >2.5 times slower than the eUML, but maybe there are some flags/options to
> >speed it up?
> >
> >Moreover, I'm not sure how to disable the slowing down options such as
> >deffered events etc.?
> >I would assume it should be as fast as eUML as it using the same
> back-end?
>
> Compile-time is proportional to string length, reducing it would help.
> So would reducing BOOST_MPL_LIMIT_STRING_SIZE.
>
> As they are empty, you can also remove you action definitions.
>
>
Cheers, I have been experimenting with BOOST_MPL_LIMIT_STRING_SIZE already.
However, it would be a bit bias to remove actions/guards in order to speed
it up as it would not reflect the real life example. I know they are not
doing much in the example, but
they still have to be called or removed by the compiler depending on the
approach.
For example msm-lite is affected by empty guards/actions if it comes to
memory size as it stores them in order to call lambda expressions.

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