Atomicity

Question 1

what is atomicity

Answer 1

a set of machine instructions that have to be coupled so that they happen together

Question 2

how can we assure atomicity

Answer 2

disable interrupts

privilege level of the processor

semaphore

peripheral device modification

Question 3

what cant happen during an atomic piece of code? how do we ensure this

Answer 3

context switch

disable interrupts or make it mutually exclusive