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Re: Rep:Re: [f-cpu] SR security
On Thu, Aug 08, 2002 at 08:53:47AM +0200, Reichelt wrote:
> cedric schrieb:
>
> > We have TIME_SLICE that is used for that, but perhaps a TIME, or CYCLE since
> > start of CPU will be usefull.
> >
> A timer counting cycles from start of CPU is very useful for profiling (how long
> does that function really take ?) And profiling is neccessary for optimisation,
> because you want to concentrate efforts on the hot spots.
Agreed.
It would also be nice to have some 64-bit timers that can be set to
arbitrary values and support several operating modes:
- run always / only in user mode
- when the counter overflows:
+ do / don't issue an interrupt
+ stop / continue running / automatically load a new timer value
--
Michael "Tired" Riepe <Michael.Riepe@stud.uni-hannover.de>
"All I wanna do is have a little fun before I die"
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