When should I use shared_mutex in C++?

When should I use shared_mutex in C++?

You should use shared_mutex in C++ when you need to allow multiple threads to read shared data concurrently while ensuring exclusive access for writing.

Can you give me an example of its usage?

Sure! If you have a data structure that is frequently read but infrequently modified, you can use shared_mutex to allow multiple readers to access it simultaneously.

What are the performance implications of using shared_mutex?

Using shared_mutex can improve performance in read-heavy scenarios, but it may introduce overhead compared to a regular mutex due to the need to manage multiple readers.

Are there any drawbacks to using shared_mutex?

Yes, one drawback is that it can lead to writer starvation if there are many readers, as writers may have to wait longer to acquire the lock.