What are the best practices for using unique_lock in C++?

What are the best practices for using unique_lock in C++?

When using unique_lock in C++, it's important to ensure that you lock the mutex as late as possible and unlock it as early as possible to minimize the locked duration.

Can you explain why minimizing the lock duration is important?

Minimizing lock duration reduces contention among threads, which can lead to better performance and responsiveness in multi-threaded applications.

Are there any specific scenarios where unique_lock is preferred over lock_guard?

Yes, unique_lock is preferred when you need more flexibility, such as the ability to lock and unlock multiple times or to transfer ownership of the lock.

What about using unique_lock with condition variables?

Using unique_lock with condition variables is essential because it allows you to unlock the mutex while waiting for a condition, and then re-lock it when the condition is met.