What is std::unique_lock in C++?

Can you explain what std::unique_lock is in C++?

Sure! std::unique_lock is a smart pointer that manages a mutex, providing exclusive ownership and automatic unlocking.

How does it differ from std::lock_guard?

Unlike std::lock_guard, std::unique_lock can be locked and unlocked multiple times, offering more flexibility.

When should I use std::unique_lock instead of std::lock_guard?

Use std::unique_lock when you need to defer locking, unlock before going out of scope, or use condition variables.

Can you give an example of using std::unique_lock?

Certainly! Here's a simple example:

std::mutex mtx;
std::unique_lock<std::mutex> lock(mtx);
// critical section
lock.unlock(); // optional