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C++ MCQs

What is the main difference between these two Functions? std::mutex::lock() Std::mutex::try_lock()

Lock() has a higher privilege over try_lock(). This means that you have a better chance of acquiring a mutex with lock().

Both attempt to acquire a lock, but lock() blocks if the mutex is not available, whereas try_lock() returns whether the mutex is available or not.

Lock() enforces preemption, whereas try_lock() suggests preemption.

If the mutex is not available, try_lock() returns with a corresponding code, whereas lock() snatches the mutex from the thread that currently has it.

Answer

Correct Answer: Both attempt to acquire a lock, but lock() blocks if the mutex is not available, whereas try_lock() returns whether the mutex is available or not.

Explanation:

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