Is it possible to do this? This feature is particularly relevant in a project with re-used s/w components. I'm interested in knowing the elements of a custom hashmap that is used in one part of my code at a certain time. However, if I put a break point on it then every thread that is using that hashmap for any purpose will suddenly be hitting my breakpoint. I'd like the ability to mute break points by thread. I understand this will slow down my app (because a thread identity test would have to be done each time the break point was hit) but it's infinitely better than what I have now.