From mboxrd@z Thu Jan 1 00:00:00 1970 From: Arnaud Mouiche To: ecos-discuss@sourceware.cygnus.com Subject: [ECOS] scheduler and clock question Date: Fri, 20 Jul 2001 05:30:00 -0000 Message-id: <5.0.2.1.0.20010720141217.00aa29a0@193.54.84.101> X-SW-Source: 2001-07/msg00631.html 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