Wait-free thread communication

[Jin via Digitalmars-d]

On Saturday, 9 January 2016 at 14:20:18 UTC, Andy Smith wrote:
> I'm a little worried you have no volatile writes or fences 
> around your code when you 'publish' an event using head/tail 
> etc. It looks like it's working but how are you ensuring no 
> compiler/CPU reordering is ocurring. Does x86_64 actually allow 
> you to get away with this? I know its memory model is stricter 
> than others...

This works fine in my tests, but how to enforce memory barrier in 
D?