Obedient threads

[Chris via Digitalmars-d-learn]

On Thursday, 2 October 2014 at 10:33:02 UTC, thedeemon wrote:
> Just use non-blocking receives in main thread's event loop. 
> When you get a message from child thread that it's finished 
> playing and you decide you don't need that thread anymore, send 
> a message to child "you're dismissed". The child should also 
> have some loop to check for incoming messages non-blockingly. 
> Upon receiving such message it should exit.

Thanks. I was thinking of something like that, only I haven't 
found a way to set up non-blocking receives. What am I missing. 
I'm sure it's something trivial.