What are the differences between std::lock_guard and std::unique_lock?

Can you explain the differences between std::lock_guard and std::unique_lock in C++?

Sure! Both std::lock_guard and std::unique_lock are used for managing mutexes in C++, but they have some key differences.

What are the main advantages of using std::unique_lock over std::lock_guard?

std::unique_lock offers more flexibility, such as the ability to lock and unlock the mutex multiple times and to defer locking.

Are there any performance implications when choosing one over the other?

Yes, std::lock_guard is generally more lightweight and faster for simple locking, while std::unique_lock has overhead due to its additional features.

In what scenarios would you recommend using std::unique_lock?

I would recommend std::unique_lock when you need to manage the lock's lifetime more flexibly, like in condition variables or when you need to unlock and relock.