[Solved] Which of the following is the correct syntax to create a Mutex and lock a critical section in Ruby? — Ans: mutex = Mutex.new; mutex.synchronize { # critical code } | Ruby

Ruby - Concurrent Programming

Which of the following is the correct syntax to create a Mutex and lock a critical section in Ruby?

Amutex = Mutex.new; mutex.lock; # critical code; mutex.unlock

Bmutex = Mutex.lock; mutex.synchronize { # critical code }

Cmutex = Mutex.new; mutex.synchronize { # critical code }

Dmutex = Mutex.lock; mutex.unlock

Step-by-Step Solution

Solution:

Step 1: Recall Mutex usage
Mutex.new creates a mutex; synchronize method locks and unlocks automatically.
Step 2: Check syntax correctness
mutex = Mutex.new; mutex.synchronize { # critical code } uses Mutex.new and synchronize block correctly. Others misuse methods or syntax.
Final Answer:
mutex = Mutex.new; mutex.synchronize { # critical code } -> Option C
Quick Check:
Mutex synchronize syntax = correct [OK]

Quick Trick: Use Mutex.new and synchronize block for safe locking [OK]

Common Mistakes:

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Which of the following is the correct syntax to create a Mutex and lock a critical section in Ruby?