Multiple ChoiceHard 45s
RCU Read-Side Guarantees
In a typical RCU (Read-Copy-Update) scheme, what is the fundamental read-side guarantee?
Options
- 1Readers take a lock that blocks writers for the whole read-side critical section, then free at once
- 2Readers access data within a read-side critical section without blocking, and defer free until grace period
- 3Writers never modify data in place, so publishers must copy the whole structure on every read
- 4Writers block until all readers finish their current critical section before publishing any update
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