Is this lock-free .NET queue thread safe?

Question

My question is, is the class included below for a single-reader single-writer queue class thread-safe? This kind of queue is called lock-free, even if it will block if the queue

Answer 1

Given that I can't find any reference that the Interlocked.Exchange does Read or Write blocks, I would say not. I would also question why you want to go lockless, as seldom gives enough benefits to counter it's complexity.

Microsoft had an excellent presentation at the 2009 GDC on this, and you can get the slides here.