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Re: [lwip-users] event_callback() context switch when calling sys_sem_si
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Re: [lwip-users] event_callback() context switch when calling sys_sem_signal() |
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Date: |
Fri, 19 Sep 2014 20:27:24 +0200 |
Joel Cunningham wrote:
> 1) Should SYS_ARCH_PROTECT() do more than just disable interrupts? Something
> that would act as a critical section in the case where a context switch
> happens?
Up to now, it should block task switching too, I guess. Although this is not
cleanly documented, it's just expected.
However, I think by now it would be better to not make that assumption, so
could you please file a bug report including your fix? (Or do we already have
one? I can't remember)
> 2) Is it assumed that calling sys_sem_signal() will not cause a voluntary
> context switch?
Right now, that's what is assumed, yes.
Simon