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Re: GC and stack marking

From: Eli Zaretskii
Subject: Re: GC and stack marking
Date: Mon, 19 May 2014 23:03:22 +0300

> Date: Mon, 19 May 2014 12:58:34 -0700
> From: Paul Eggert <address@hidden>
> CC: address@hidden, address@hidden
> On 05/19/2014 12:14 PM, Eli Zaretskii wrote:
> >> >
> >> >We could have the garbage collector treat purify-flag specially, I 
> >> >suppose.
> > I'm not sure I understand the suggestion.  Can you elaborate?
> I was thinking of a horrible hack where the GC knows about purify-flag, 
> so that when you set purify-flag to nil the GCC immediately frees the 
> object that purify-flag used to contain, and that we make purify-flag 
> special in this way.

Right, but that would only work for that single object.  The problem,
by contrast, sounds more general than that.

> Maybe we should get rid of the hash-table purify-flag hack, for
> example.

Maybe, I'm not sure I fully understand its purpose to begin with
(speed of finding objects?).  There's a comment by Stefan there saying
something about some savings.

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