Using volatile long as an atomic

Question

If I have something like this...

volatile long something_global = 0;

long some_public_func()
{
    return something_global++;
}

Would it b

Answer 1

Volatile just prevents optimizations, but atomicity needs more. In x86, instructions must be preceeded by a LOCK prefix, in MIPS the RMW cycle must be surrounded by an LL/SC construct, ...