hard20 pts · first answer countsrtosfreertoscritical-sections

Two ISRs and a task share a buffer

A buffer is written by a priority-6 ISR and a priority-8 ISR (both below the syscall level) and read by a task. Where is protection needed?

A.Only in the task, because ISRs can never be interruptedB.In the priority-8 ISR and the task, as the priority-6 ISR preempts bothC.Only in the priority-6 ISR, because it is the most urgentD.Nowhere at all, because ISRs never preempt one another

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Two ISRs and a task share a buffer

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