Re: Clock monotonic a suggestion

[Joel Becker]

On Fri, Mar 21, 2003 at 02:17:44PM +0100, Martin Waitz wrote:
> why don't you simply use asm("rdtsc") ?
> (ok, you should make sure that you always ask the same processor and
> stuff, but using the built in TSC seems to do everything you want...)

	It does.  That's the point.  monotonic_clock() is intended as a
portable and consistent wrapper around such access.  Otherwise, any
module that needs such access must do system specific work (TSC on x86,
cyclone on x86-x440, other stuff on S/390, etc).  In addition, having
speedstep handling in one place is a good thing.

Joel

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Joel Becker
Senior Member of Technical Staff
Oracle Corporation
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