Re: Add the ability to limit the amount of memory that can be allocated to backends.

Regarding the shared counter noted here,

> What you could do is to have a single, imprecise, shared counter for the total
> memory allocation, and have a backend-local "allowance". When the allowance is
> used up, refill it from the shared counter (a single atomic op).

Is there a preferred or suggested location to put variables like this?
Perhaps a current variable to use as a reference?

Thanks,
Reid