[ECOS] Will unlock_inner() be called twice during Real Time Clock Interrupt in ecos?

[Qiang Huang]

As I posted similar subject onto ecos mailing list before, still hasn't be
clearly described.

Question:
When a Real Time clock interrupt happens: clock tick.

interrupt VSR --> .. --> interrupt_end() -->  Cyg_Scheduler::unlock() -->
**unlock_inner()** --> Cyg_Interrupt::call_pending_DSRs() --> calls to
Cyg_RealTimeClock::dsr() --> rtc->tick( ) --> Cyg_Scheduler::unlock()-->
**unlock_inner()** --> now comes back again, will it turn out to be
recursive call? or the next time it won't drops into
Cyg_RealTimeClock::dsr() again (which one is the fact??). but seems
unlock_inner() has been called twice during a real time clock interrupt.

Thanks


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