Thread-Safe Initialization: call_once and once_flag
Explore how to implement thread-safe initialization in C++ using std::call_once and std::once_flag. Understand how these tools ensure only a single execution among multiple threads, enabling safe singleton creation and reliable shared data handling in multithreaded programs.
We'll cover the following...
We'll cover the following...
By using the std::call_once function you can register a callable. The std::once_flag ensures that only one registered function will be invoked, but we can register additional functions via the same std::once_flag. That being said, only one function from that group is called.
std::call_once obeys the following rules:
- Exactly