What are the alternatives to thread-local storage in C++11?

What are the alternatives to thread-local storage in C++11?

In C++11, alternatives to thread-local storage include using mutexes for synchronization, or employing the Singleton pattern.

Can you explain how the Singleton pattern can be used for thread safety?

Sure! The Singleton pattern ensures a class has only one instance and provides a global point of access to it. To make it thread-safe, you can use a mutex to lock access to the instance during its creation.

What about using std::shared_ptr? Is it a good alternative?

Yes, std::shared_ptr can be used to manage shared resources across threads, but it requires careful handling to avoid race conditions.

Are there any performance considerations I should be aware of?

Absolutely! Thread-local storage can be faster for access, but using mutexes or shared pointers may introduce overhead due to locking and unlocking.