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Re: absolute time

Subject: Re: absolute time
From: Shawn Erickson <email@hidden>
Date: Tue, 25 Nov 2003 18:57:08 -0800

On Nov 25, 2003, at 2:58 PM, Andrew Gallatin wrote:

I need to know the absolute time. How do I do this in an IOKit
friendly way? On linux I call do_gettimeofday(), and on FreeBSD
I call microtime(), but I don't see anything promising in IOKit.

It seems like this should be possible, since
IOTimerEventSource::wakeAtTime() allows you to specify an absolute
time.

If you hunt around in IOLib.h it is recommended that one use what is found in kern/clock.h (see the Kernel.framework).

In particular clock_get_uptime(uint64_t *result)

Now I am not sure if this is part of the stable kernel API going forward but it likely is.

-Shawn
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