improve concurrent queue

[qznc]

On Monday, 26 August 2013 at 19:35:28 UTC, luminousone wrote:
> I have been working on a project and needed a good concurrent 
> queue

What does "good" mean? Concurrent queues have so many design 
parameters (single reader? single writer? blocking? bounded? etc) 
and there is no queue, which performs optimal for every case.

I can recommand this paper (paywalled though):
http://dl.acm.org/citation.cfm?id=248106

Nevertheless, I believe you rather wanted some comments on your 
specific code. I wonder why you implemented spinlocks yourself? 
If you write a blocking algorithm, you should probably use the 
phobos locks.