Subject: Re: [linux-audio-dev] userspace atomic primitives for multithread and SMP applications?
From: Jack O'Quin (joq_AT_io.com)
Date: Tue Sep 09 2003 - 08:13:49 EEST
Michael Ost <most_AT_museresearch.com> writes:
> I know this message is ancient, but if you are still looking for atomic
> primitives I just ran across some in the boost code base. I can't figure
> out how to use them (!) but perhaps you can? Boost, if you don't know,
> seems to be kind of a proving ground for the C++ working group. Lots of
> libraries which are cross platform and written by smart people. See
> www.boost.org.
>
> Hope this helps... mo
>
> PS At least the code might provide some hints for how to implement
> atomic primitives yourself. The code is open, but not GPLd.
Thanks for the pointer, mo.
Where are these primitives actually defined? I found this in
once.cpp...
// The friendly form of InterlockedCompareExchange that defers
// according to the above function type wrappers.
inline LONG compare_exchange(volatile LPLONG dest, LONG exch, LONG cmp)
{
return ice_wrapper(&InterlockedCompareExchange, dest, exch, cmp);
}
But, I can't figure out where the ice_wrapper stuff is defined. I
suspect it may be the interesting part, some kind of machine-dependent
layer.
Regards,
-- Jack O'Quin Austin, Texas, USA
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