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Re: darwin-kernel digest, Vol 2 #459 - 10 msgs

On Jan 20, 2004, at 5:27 AM, ollie wrote:
You could have your kext either launch the daemon using KUNCExecute or else have it send a kernel event when ever it requires action from your daemon. This will remove all polling from your current design.

Please, do NOT use KUNCExecute(). It's a "wing and a prayer" mechanism (there are many situations where it will fail silently) only added for people who were too stubborn to switch to the "driver down from the daemon, not the out from the kernel" model of execution under Mac OS X/Darwin. Each release, the timing of system boot changes, and therefore the timing of when KUNCExecute() will succeed also changes.

There are several mechanism available to register the daemon from user-space for launching only when needed. These are much more reliable than the KUNCExecute() mechanism, as the user-level dependencies are always satisfied before the daemon can be registered in the first place.

--Jim
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 >Re: darwin-kernel digest, Vol 2 #459 - 10 msgs (From: ollie <email@hidden>)



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