From: Christian Couder <christian.couder@gmail.com>
To: Philip Oakley <philipoakley@iee.email>
Cc: git <git@vger.kernel.org>, Junio C Hamano <gitster@pobox.com>,
Jeff King <peff@peff.net>,
Christian Couder <chriscool@tuxfamily.org>,
Ramsay Jones <ramsay@ramsayjones.plus.com>,
Jonathan Tan <jonathantanmy@google.com>
Subject: Re: [PATCH v2 5/9] pack-bitmap: introduce bitmap_walk_contains()
Date: Sat, 19 Oct 2019 20:55:56 +0200 [thread overview]
Message-ID: <CAP8UFD2dLPguCnUhTu+F4SNPxFZ7YT5io0qXkVwvSNP-sA8Jxg@mail.gmail.com> (raw)
In-Reply-To: <dce8e0b5-c4ea-f4f6-6275-1322f2d7200b@iee.email>
Hi Philip,
On Sat, Oct 19, 2019 at 5:25 PM Philip Oakley <philipoakley@iee.email> wrote:
>
> Hi Christian,
> can I check one thing?
Yeah, sure! Thanks for taking a look at my patches!
> On 19/10/2019 11:35, Christian Couder wrote:
> > +int bitmap_walk_contains(struct bitmap_index *bitmap_git,
> > + struct bitmap *bitmap, const struct object_id *oid)
> > +{
> > + int idx;
> Excuse my ignorance here...
>
> For the case on Windows (int/long 32 bit), is this return value
> guaranteed to be less than 2GiB, i.e. not a memory offset?
>
> I'm just thinking ahead to the resolution of the 4GiB file limit issue
> on Git-for-Windows (https://github.com/git-for-windows/git/pull/2179)
I understand your concern, unfortunately, below we have:
idx = bitmap_position(bitmap_git, oid);
and bitmap_position() returns an int at least since 3ae5fa0768
(pack-bitmap: remove bitmap_git global variable, 2018-06-07)
So I think the fix would be much more involved than just changing the
type of the idx variable. It would likely involve modifying
bitmap_position(), and thus would probably best be addressed in a
separate patch series.
> > +
> > + if (!bitmap)
> > + return 0;
> > +
> > + idx = bitmap_position(bitmap_git, oid);
> > + return idx >= 0 && bitmap_get(bitmap, idx);
> > +}
next prev parent reply other threads:[~2019-10-19 18:56 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-10-19 10:35 [PATCH v2 0/9] Rewrite packfile reuse code Christian Couder
2019-10-19 10:35 ` [PATCH v2 1/9] builtin/pack-objects: report reused packfile objects Christian Couder
2019-10-19 10:35 ` [PATCH v2 2/9] packfile: expose get_delta_base() Christian Couder
2019-10-19 10:35 ` [PATCH v2 3/9] ewah/bitmap: introduce bitmap_word_alloc() Christian Couder
2019-10-22 17:46 ` Jonathan Tan
2019-10-26 9:29 ` Christian Couder
2019-10-19 10:35 ` [PATCH v2 4/9] pack-bitmap: don't rely on bitmap_git->reuse_objects Christian Couder
2019-10-19 10:35 ` [PATCH v2 5/9] pack-bitmap: introduce bitmap_walk_contains() Christian Couder
2019-10-19 15:25 ` Philip Oakley
2019-10-19 18:55 ` Christian Couder [this message]
2019-10-19 20:15 ` Philip Oakley
2019-10-19 23:18 ` Jeff King
2019-10-19 10:35 ` [PATCH v2 6/9] csum-file: introduce hashfile_total() Christian Couder
2019-10-19 10:35 ` [PATCH v2 7/9] pack-objects: introduce pack.allowPackReuse Christian Couder
2019-10-19 10:35 ` [PATCH v2 8/9] builtin/pack-objects: introduce obj_is_packed() Christian Couder
2019-10-19 10:35 ` [PATCH v2 9/9] pack-objects: improve partial packfile reuse Christian Couder
2019-10-19 15:30 ` Philip Oakley
2019-10-19 19:20 ` Christian Couder
2019-10-19 23:23 ` Jeff King
2019-10-20 11:26 ` Philip Oakley
2019-10-22 19:48 ` Jonathan Tan
2019-10-26 9:29 ` Christian Couder
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