[m-rev.] Parallel runtime thread pinning.

[Julien Fischer]

Hi,

On Mon, 24 Aug 2009, Paul Bone wrote:

>>> +mercury_check_for_declarations "_SC_NPROCESSORS_ONLN"
>>
>> Can't you just use #ifdef _SC_NPROCESSORS_ONLN in the source code?
>
> It's not clear if this will be defined as a macro or as an enum or other
> constant.  Using an #ifdef in the source code won't work for emums.  I'll add a
> comment describing this rationale.
>
> I'd be surprised if these weren't macros.  If anyone knows for sure if such an
> assumption is safe please let me know.

sysconf() is posix and the parameters for it that are a part of posix
*must* be macros.  It is extremely improbable that any non-standard
parameters like this one would be defined using an enum.

It will be sufficient to use the #ifdef here - it will also avoid
yet more clutter in the configure script.

Julien.
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