How do I force something onto the heap? (need for libev)

[Mike Parker]

On 3/6/2012 1:34 PM, Tyler Jameson Little wrote:
> I've been playing with libev in D lately, and I've run into a problem.
> I've been able to hack around it, but it'd like to find a better, more
> general solution. Here's a link to the code:
>
> https://github.com/beatgammit/fun-with-d/blob/master/libev/tcp_server.d
>
> The code is a basic TCP server that responds to connections in a
> non-blocking fashion. It's not perfect, and the current problem I'm
> trying to solve is how to get my Socket instance (from accept) to the
> handler.  Since everything is asynchronous, and the return value of
> accept() will get lost (garbage collected, I think). When I try to get
> the address of it, the compiler complains that it's not an lvalue.

Socket instance returned by accept won't be garbage collected (or lost) 
as long as you have a reference to it active somewhere in your program. 
It doesn't matter which thread. Just take the return value of accept and 
pass it to your handler as is. As long as your handler holds on to the 
reference, you're fine. No need to try and get the address, or hack 
around it.