Question: 2. [15%] Semaphore implementation is usually based on process sleep/wakeup instead of busy waiting. (a) [5%] What's the benefit of such implementation method? (b) [10%]

$2. [15\%] Semaphore implementation is usually based on process sleep/wakeup instead$

2. [15\%] Semaphore implementation is usually based on process sleep/wakeup instead of busy waiting. (a) [5\%] What's the benefit of such implementation method? (b) [10\%] Please write pseudocode of such implementation method. That is, for semaphore X, please write the pseudocode of wait( (X) and signal(X)

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