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scheduler and clock question
- To: ecos-discuss at sourceware dot cygnus dot com
- Subject: [ECOS] scheduler and clock question
- From: Arnaud Mouiche <arnaud dot mouiche at inventel dot fr>
- Date: Fri, 20 Jul 2001 14:29:56 +0200
first, tell me if I'm right :
- the object 'Cyg_RealTimeClock' defined in the 'clock.cxx' files has an
ISR. this ISR is called regulary (10 ms corresponding to the
CYGNUM_KERNEL_COUNTERS_RTC_PERIOD value, generally equal to
CYGNUM_HAL_RTC_PERIOD.)
- to create this periodicaly call, it use 'hal_clock_initialize' and
'hal_clock_reset' specifics functions.
- the ISR attachement is performed by the 'Cyg_RealTimeClock' constructor
- every CYGNUM_KERNEL_SCHED_TIMESLICE_TICKS times an ISR rise for the timer
(generally equal to 5), a call is made to the choosen scheduler object.
this scheduler performs context switch and so..
Here my question :
There is no header defined for 'Cyg_RealTimeClock' object. And there is
no link with this object in any other files. In that case, who initializes
this object (and so, who calls the contructor) ?
If you have the answer, ... you are welcome !!!
arnaud