Re: [Boost-users] Signals2 benchmark

Subject: Re: [Boost-users] Signals2 benchmark
From: Niall Douglas (s_sourceforge_at_[hidden])
Date: 2015-02-07 11:18:15

On 7 Feb 2015 at 8:20, Joren Heit wrote:

> My original question was about how to benchmark my own version (fairly)
> against boost, hence this mailing list. As far as I was concerned, this
> discussion could have been over after the link to all the benchmarks. I
> never intended this discussion to be about thread safety. However, I can't
> stress enough that I'm very thankful for all the help! ;-)

I think we ignored your original question as the question of its 
correctness of thread safety is more important. When, and only when, 
it is unit test demonstrated to be correct is it worth thinking about 
benchmarking. You'll find to gain correctness/reliability there are a 
ton of unfortunate tradeoffs that have to be made.

I think the reason we're being so helpful is because we all suspect 
that signals and slots is one of those patterns which sits on the 
cusp of being just simple enough to implement lock free vs just 
complex enough it isn't worth implementing lock free. I suspect none 
of us know the answer to that, but it's the kind of thing a certain 
type of Boost programmer lies awake at night wondering.

I think we'd all also like to know a definitive answer. Perhaps Tony 
you might consider a lock free signals and slots presentation for a 
future BoostCon eh?

Niall

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