Which of the following solutions needs hardware support for the critical section problem?
A) memory barriers
B) compare_and_swap instruction
C) atomic variables
D) all of the above

Question

Quizplus · Accepted Answer

All three options require hardware support to solve the critical section problem. Memory barriers ensure that the order of memory access is maintained, compare_and_swap instruction helps in implementing lock-free synchronization, and atomic variables ensure that the set of operations are executed as a single, indivisible and uninterruptible unit on the hardware level. Therefore, all three options require hardware support to solve the critical section problem.

Which of the Following Solutions Needs Hardware Support for the Critical