Do I need to use locking with integers in c++ threads

Question

If I am accessing a single integer type (e.g. long, int, bool, etc...) in multiple threads, do I need to use a synchronisation mechanism such as a mutex to lock them. My un

Answer 1

There's no support for atomic variables in C++, so you do need locking. Without locking you can only speculate about what exact instructions will be used for data manipulation and whether those instructions will guarantee atomic access - that's not how you develop reliable software.