On 8/8/2020 1:55 AM, Sorawee Porncharoenwase wrote:
I even saw people doing `collect-garbage` three times, just to be safe
I guess. And yet theoretically it's not guaranteed that things will be
claimed back properly.
Honestly, there should be a function that does this `collect-garbage`
until fixpoint or something, so that we don't need to perform this ...
uh .... ritual.
There may be no documented guarantee, but I *think* the implementation
assures that 2 collections, back-to-back, are sufficient to reclaim all
objects that were garbage at the beginning of the 1st collection. At
least for BC Racket.
And I know that sounds like weasle ... but GC efficiency is measured
statistically, and it's impossible to reclaim 100% of garbage in a
single collection without completely stopping the mutator for the
duration. The whole point of incremental, generational [and multispace
in general] collection is to avoid long pauses.
George
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