I left my program open for 9 hours and it used up 700mb of ram, could someone review it?

[Gan via Digitalmars-d-learn]

On Wednesday, 28 January 2015 at 02:50:11 UTC, FG wrote:
> On 2015-01-28 at 03:04, Vladimir Panteleev wrote:
>> What type is CircleShape?
>> If it is a class, or otherwise contains pointers, then this is 
>> probably the source of your problem.
>
> class CircleShape : Shape is defined in 
> dsfml.graphics.circleshape, so there's no going around this...
>
>> - Building your program for x86_64 - 64 bits of address space 
>> will make fake pointer pinning very unlikely
>
> The binary included in the zip was 64-bit, so fake pointers 
> shouldn't be that much of a problem.
>
> Oh, and I take back what I said about suspecting that 
> SpaceBackground.stack grows infinitely. It probably doesn't. I 
> don't have DSFML installed, and therefore couldn't recreate the 
> behaviour.

Is there a way to set a variable to be cleared in the new GC 
collection or to forcibly release a variable?

I have an inkling that it might be the Sprite class or something 
with the RenderTextures.