I've heard i++ isn't thread safe, is ++i thread-safe?

Question

I\'ve heard that i++ isn\'t a thread-safe statement since in assembly it reduces down to storing the original value as a temp somewhere, incrementing it, and then replacing

Answer 1

Never assume that an increment will compile down to an atomic operation. Use InterlockedIncrement or whatever similar functions exist on your target platform.

Edit: I just looked up this specific question and increment on X86 is atomic on single processor systems, but not on multiprocessor systems. Using the lock prefix can make it atomic, but it's much more portable just to use InterlockedIncrement.