Re: [boost] [Boost.utility]

Subject: Re: [boost] [Boost.utility]
From: Stewart, Robert (Robert.Stewart_at_[hidden])
Date: 2010-01-27 15:26:54

Steven Watanabe wrote:
> Andrew Chinkoff wrote:
> >> When call_once returns it is guaranteed that foo has
> >> run to completion exactly once.  If two thread run it
> >> in parallel one of them will block while the other runs
> >> foo.
> >
> > Ok, I ask again specifically:
> >
> > Does boost::once ensure that called function will be
> > performed "atomically" rather than "mutually excluded"?
>
> I don't understand what you mean by "atomically."
>
> > I mean "atomic" foo performance but not "mutex'ed".
>
> I can't parse this sentence.

I think he means to ask whether it uses CAS and the like versus mutexes.

_____
Rob Stewart                           robert.stewart_at_[hidden]
Software Engineer, Core Software      using std::disclaimer;
Susquehanna International Group, LLP  http://www.sig.com

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