Subj : Re: What is the real costs of LOCK on x86 multiprocesor machine? To : comp.programming.threads From : Oliver S. Date : Sat Jul 30 2005 03:57 am > I stepped through InterlockedIncrement and there definitely IS lock. And there are also locks on Enter- and LeaveCriticalSection. MS dropped the two versions of this functions win kernel32.dll from NT4 to Win2K. .