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Re: proposed getitimer and setitimer functions
From: |
Thomas Bushnell, BSG |
Subject: |
Re: proposed getitimer and setitimer functions |
Date: |
07 Jul 2001 16:14:10 -0700 |
User-agent: |
Gnus/5.0808 (Gnus v5.8.8) Emacs/20.7 |
Marius Vollmer <address@hidden> writes:
> Fortunately, setitimer is not about the calendar, it only deals with
> durations of time that don't need to unambiguously represent an
> absolute point in time, world wide. So we are only faced with
> precision issues. Are microseconds safe for the future? For a 1GHz
> processor, one microsecond are 1000 clock cycles so I can imagine that
> we want to go below one microsecond for profiling in the near future
> (not with the interpreter...)
We have no precision issues. itimers should use intervals specified
by numbers, and because *numbers* are not all integers, it should just
do the right thing. Pick a scale (*any* scale), and then allow
numbers (*any numbers*) to specify the duration of the interval.
Ideally, however, you would specify a "time interval" object (which is
what you get if you subtract two times).
You might want a separate interface which tells the user what the
precision of the interval timers is, but that's a separate question.
- Re: proposed getitimer and setitimer functions, (continued)
Re: proposed getitimer and setitimer functions, Thomas Bushnell, BSG, 2001/07/06
- Re: proposed getitimer and setitimer functions, Marius Vollmer, 2001/07/07
- Re: proposed getitimer and setitimer functions, Rob Browning, 2001/07/07
- Re: proposed getitimer and setitimer functions, Marius Vollmer, 2001/07/12
- Re: proposed getitimer and setitimer functions, Rob Browning, 2001/07/13
- Re: proposed getitimer and setitimer functions, Marius Vollmer, 2001/07/22
Re: proposed getitimer and setitimer functions,
Thomas Bushnell, BSG <=
Re: proposed getitimer and setitimer functions, Marius Vollmer, 2001/07/07
Re: proposed getitimer and setitimer functions, Matthias Koeppe, 2001/07/13
Re: proposed getitimer and setitimer functions, Marius Vollmer, 2001/07/22
Re: proposed getitimer and setitimer functions, Rob Browning, 2001/07/09
Re: proposed getitimer and setitimer functions, Martin Grabmueller, 2001/07/07