Question: Consider a reader - writer lock a writer requires exclusive access to the lock, while readers may concurrently hold the lock with other readers. How

Consider a reader-writer lock a writer requires exclusive access to the lock, while readers may concurrently hold the lock with other readers. How would you implement a fair version of this lock (i.e., lock requests are granted in the order received)? Please present your pseudo-code and explain your rationale.
Give the answer in context to operating systems, give clear pseduocode for this, with explanation for the steps in comments.

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