[MUD-Dev] Ticks?

[Bruce Mitchener]

Eli Stevens wrote:

> One can use the ftime function to fill a timeb struct with the
> seconds and milliseconds since the epoch, along with the timezone
> and daylight savings time status.  This is wall clock time, not
> process time.  IIRC, clock() gives a higher resolution
> (microseconds, at least on my Linux box), but I am having a hard
> time picturing a situation where that kind of accuracy is really
> needed.

Eli,

Something where higher resolution clocks can be very useful is in
doing any sort of runtime profiling or process/thread accounting of
time spent.

And, should you get into that, the POSIX realtime services,
including clock_gettime() can be really useful if your OS supports
that API. (Linux with glibc 2.2 does.)

Then you can use CLOCK_PROCESS_CPUTIME_ID and
CLOCK_THREAD_CPUTIME_ID to track the CPU time spent per-process or
per-thread.

Enjoy,

  - Bruce

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