What are the differences between shared lock and unique lock?

What are the differences between shared lock and unique lock?

A shared lock allows multiple threads to read a resource simultaneously, while a unique lock allows only one thread to write.

Can you give an example of when to use each type of lock?

Sure! Use a shared lock when multiple threads need to read data without modifying it. Use a unique lock when a thread needs to write or modify data.

What happens if a unique lock is requested while a shared lock is held?

If a unique lock is requested while a shared lock is held, the request will be blocked until all shared locks are released.

Are there any performance implications of using these locks?

Yes, using too many shared locks can lead to contention, while unique locks can cause delays if held for long periods.