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List:       orocos-dev
Subject:    [Orocos-Dev] fosi timing functions
From:       klaas.gadeyne () fmtc ! be (Klaas Gadeyne)
Date:       2006-02-28 11:52:50
Message-ID: Pine.LNX.4.63.0602281105400.2169 () nyquist ! labo01 ! fmtc ! be
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It is not totally clear what the meaning of the following functions in
fosi.h is?  Can anyone confirm/deny my guesses below?

* inline NANO_TIME rtos_get_time_ns(void) { return rt_timer_read(); }

   Get the "current time" of the underlying RTOS expressed in nanosecs

* inline TICK_TIME systemTimeGet(void) { return rt_timer_tsc(); }

   Get the "current time" of the underlying RTOS expressed in ticks?
   However, why is it called systemTimeGet() and not
   rtos_get_time_ticks then?

* inline TICK_TIME systemNSecsTimeGet(void) { return rt_timer_read(); }

   Apparently, there's a difference between system and rtos, otherwise
   this would be the same call as the first one (implementation is the
   same though, at least for xenomai).


The last 2 functions are used in the TimeService class, while the
former one is only used internally in the fosi stuff?  Is that the
"clue"?

Klaas

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