Re: [Chicken-hackers] [PATCH] Fix #1133

[Jörg F. Wittenberger]

Am 05.07.2014 23:31, schrieb Felix Winkelmann:
> Finalizers have an impact on every GC, as every GC may free memory at 
> any time. What may be possible is to register finalizers only when it 
> is known that the associated data is not held in global variables. But 
> I'm not sure if it isn't in the end easier to manage the resources by 
> hand. On could do something like registerering and de-registering 
> finalizers temporarily (the former is O(1), the latter O(N), though). 
> Whether this buys anything, is another question, though. felix 
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I'm becoming ever more guilty here for failing to provide a single 
feature patch to runtime.c for just changing this.

If anyone had the patience to cherry-pick from a diff… here is code 
where doing de-registration in O(1) for finalizers and gc roots.