Does anyone understand how to use "shared" types with concurrency send/receive functions?

[crimaniak via Digitalmars-d-learn]

On Sunday, 13 August 2017 at 11:35:05 UTC, Arek wrote:
> Yeah, I've read this. But conurrency.send cannot pass immutable 
> object. The same story with Unique.
  Sorry, read this as 'efficient immutable'.

> More over, "shared" looks rather like unfinished concept.
  Yes, exactly.

> Anyway, _gshared looks very promising, so I will try to work 
> out any approach.
More of this, I think, you can't avoid __gshared for any complex 
work. Even mutexes from Phobos doesn't support shared, so I had 
to 'cowboy with __gshared' when implementing my site engine.