[racket] disable garbage collection

Recall that Disney used Chez in this way: when you're in a critical section of a ride, disable GC and allocate enough beforehand. As Kent used to say, tG, these are virtual rides. 




On Jun 2, 2011, at 2:58 PM, Richard Cleis wrote:

> I have ruled out Racket in applications were I needed to precisely inhibit GC until regular critical slices are completed, then trigger GC ASAP.  The efforts were partially successful, but there's no way to guarantee behavior of faux real-time hacks like that.
> 
> I wonder how difficult it would be to have randomly interruptible GC.  It seems impossible, but I would use it.  The Impossible is often desirable.
> 
> RAC
> 
> On Jun 2, 2011, at 10:01 AM, Eduardo Bellani <ebellani at gmail.com> wrote:
> 
>>> * Extremely Unusual Situations: if you're in the unusual situation of
>>> doing something normally considered inadvisable, like you're
>>> intentionally designing the SR-71 to leak fuel, maybe there's some
>>> bizarre rocket-scientist reason understood only by you that you have to
>>> turn off GC just to get your app to fly in one piece.  Almost no one
>>> will ever need this, and, in the case of Racket, they could always add
>>> it if they did.
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