* [Xenomai-core] rt_alarm_create
@ 2005-10-11 14:03 Steven Seeger
2005-10-11 14:15 ` Philippe Gerum
0 siblings, 1 reply; 2+ messages in thread
From: Steven Seeger @ 2005-10-11 14:03 UTC (permalink / raw)
To: xenomai
Why is there a different version of this function for user and kernel space?
I don't see this reflected in the docs.
Steven
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: [Xenomai-core] rt_alarm_create
2005-10-11 14:03 [Xenomai-core] rt_alarm_create Steven Seeger
@ 2005-10-11 14:15 ` Philippe Gerum
0 siblings, 0 replies; 2+ messages in thread
From: Philippe Gerum @ 2005-10-11 14:15 UTC (permalink / raw)
To: Steven Seeger; +Cc: xenomai
Steven Seeger wrote:
> Why is there a different version of this function for user and kernel space?
Because Xeno cannot fire alarm handlers asynchronously in user-space when the
alarm elapses at kernel level. We currently need an alarm server in user-space
to process alarm events synchronously for the app, hence rt_alarm_wait().
> I don't see this reflected in the docs.
>
Have a look at the "Environment" sections and notes for the alarm-related calls.
> Steven
>
>
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--
Philippe.
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2005-10-11 14:15 ` Philippe Gerum
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