On 15 May 2006, at 18:50, Chris Vetter wrote:
On 2006-05-15 15:57:30 +0200 David Chisnall <[EMAIL PROTECTED]> wrote:
[...]
I have tested the FreeBSD and Darwin back ends (the FreeBSD code
works on FreeBSD 4.11 and 6.1), and the Linux code should have
been tested already.
[...]
Since you apparently have FreeBSD4.x available, try something like
the following.
That seems to give the same answer as my code for FreeBSD < 5 on my
FreeBSD 4.11 box, even under heavy load (although I didn't test it
with large process counts. It will, of course, only work on x86. I
don't know how well my code will work on non-x86 platforms (I've not
tested it).
You will have to come up with a definition for the #if statements,
theoretically #if (__FreeBSD_version < 5) should work.
Since that segment of the code will only be reached if the sysctl
fails, we don't need to bother testing for FreeBSD < 5 at compile
time - it's just a fall-back mechanism. It would be worth wrapping
it in #ifdefs that detect x86 CPUs though. I can't remember the
correct macro to test for in these cases though. It does seem worth
adding as another fallback, however.
Another option is to try looking in /compat/linux/proc/cpuinfo. If
the user has Linux compatibility turned on and this mounted then it
will contain a line that looks something like this:
cpu MHz : 2539.10
And the Linux code can be used to parse it. It does seem a lot of
effort to go to to support an obsolete version of a free platform,
however. I suspect the only FreeBSD 4.x and earlier machines that
still exist are servers, and so don't actually need Étoilé (mine is
headless).
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