Re: [PATCH 01/12] blame: use commit-slab for blame suspects instead of commit->util
- Date: Sat, 12 May 2018 05:22:41 -0400
- From: Jeff King <peff@xxxxxxxx>
- Subject: Re: [PATCH 01/12] blame: use commit-slab for blame suspects instead of commit->util
On Sat, May 12, 2018 at 10:00:17AM +0200, Nguyễn Thái Ngọc Duy wrote:
> +define_commit_slab(blame_suspects, struct blame_origin *);
> +static struct blame_suspects blame_suspects;
> +struct blame_origin *get_blame_suspects(struct commit *commit)
> + struct blame_origin **result;
> + result = blame_suspects_peek(&blame_suspects, commit);
> + return result ? *result : NULL;
Hmm. You need this helper because you want to be able to peek and get a
NULL. But that's already what _at() would return, with the only
difference that we may extend the slab just to return NULL.
I wonder how much it matters in practice. We'd generally be extending
the slab to hit every commit anyway in this case, I would think.
I suppose it doesn't actually simplify the code that much to do it that
way, though. We could get rid of this helper, but the caller would still
for (p = *blame_suspects_at(o->commit); p; p = p->next)
which is actually slightly uglier than get_blame_suspects(), because we
have to do the pointer-dereference ourselves.