What are the best practices for using async in C++ threading?

What are the best practices for using async in C++ threading?

When using async in C++, it's important to manage resources carefully. Always ensure that you handle exceptions and avoid data races by using mutexes or other synchronization mechanisms.

Can you explain how to handle exceptions in async tasks?

Certainly! You can use std::future to retrieve the result of an async task. If an exception occurs, it will be thrown when you call get() on the future, allowing you to handle it appropriately.

What about managing shared resources between threads?

For shared resources, use mutexes or locks to prevent data races. Consider using std::lock_guard for automatic locking and unlocking.

Are there any performance considerations I should be aware of?

Yes, be mindful of the overhead introduced by context switching and locking. Minimize the use of locks and prefer lock-free data structures when possible.