Re: [q-lang-users] Q 7.11 on Mac OS X

[Albert G. <Dr....@t-...>]

Ryan Schmidt wrote:
> "No manual entry for clock_gettime"

Ok, so that probably means that the highres timers aren't available.
Anyway, I've corrected the checks for the availability of these and
various related features, so that they should now properly detect their
absence on OS X, as well as on older Cygwin systems.

Patch is attached. Ryan, could you please check whether this builds ok
now? Sorry for the hassle, I should maybe have pointed you to RC3 so
that we could have checked this before the final release. But I was
pretty sure that OS X would have these, as they've been in POSIX for a
while and AFAIK FreeBSD has them, too.

NOTE to OS X users: What this means for Q programmers on OS X is that
the new highres timers in the system module (Q functions nanotime,
nanosleep etc.) won't be available for that platform. Of course, you can
still use the built-in time and sleep functions, which will
automagically use the best timers available on a system (on Unix systems
without clock_gettime et al this will usually be the C functions
gettimeofday and nanosleep). Alas, these will only work with wall clock
time, whereas the new functions also offer a monotonic clock and
per-process/per-thread cpu clocks. But maybe someone feels inclined to
bug the Darwin developers about implementing clock_gettime and friends,
so that they will work in a future OS X version? ;-)

Cheers,
Albert

-- 
Dr. Albert Gr"af
Dept. of Music-Informatics, University of Mainz, Germany
Email:  Dr....@t-..., ag...@mu...
WWW:    http://www.musikinformatik.uni-mainz.de/ag