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- Subject: Re: Reentrant GC
- From: Coda Highland <chighland@...>
- Date: Mon, 26 Nov 2018 21:51:57 -0600
On Mon, Nov 26, 2018 at 8:53 PM Soni L. <fakedme@gmail.com> wrote:
>
> Has anyone made a reentrant Lua GC, to allow garbage collection within __gc metamethod?
>
> I could really use this, but it doesn't seem to be a thing.
That's not the first thing I think of when I hear "reentrant." Lua's
GC *is* reentrant by the definition I usually use, which is to say
that multiple threads can GC distinct Lua states concurrently.
Reentrancy by the notion you suggest sounds pretty tricky. I can
envision how to do it if I were to build a GC from scratch, but given
how much of a niche use case it is I'm not sure if it would be worth
the effort.
What's your use case? Why can't you do something like queue up an
action inside your __gc metamethod that you can process after the
sweep has ended?
/s/ Adam
