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Re: [Emacs-diffs] master 9d8d065: Add support for finalizers

From: Daniel Colascione
Subject: Re: [Emacs-diffs] master 9d8d065: Add support for finalizers
Date: Tue, 03 Mar 2015 09:08:54 -0800
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:31.0) Gecko/20100101 Thunderbird/31.4.0

On 03/03/2015 09:03 AM, Stefan Monnier wrote:
> Was this discussed on emacs-devel and I missed it?


> Question: why use a doubly-linked list, unlike pretty much everything
> else in our code base?

We remove finalizers from the middle of the list in unchain_finalizer.
We could just rebuild the list as we scan it, but when we'd have to
touch every node. Or we could maintain auxiliary state, but then in
run_finalizers we'd have to scan the whole list instead of the part
we're running.

>> +  DEFVAR_BOOL ("gc-precise-p", gc_precise_p,
> This name is wrong.  "-p" stands for "predicate" and a predicate is
> a function that returns a boolean, whereas this is a variable/constant.

I've also seen it for boolean-valued variables.

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