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reachable: add options to add_unseen_recent_objects_to_traversal

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This function behaves very similarly to what we will need in
pack-objects in order to implement cruft packs with expiration. But it
is lacking a couple of things. Namely, it needs:

  - a mechanism to communicate the timestamps of individual recent
    objects to some external caller

  - and, in the case of packed objects, our future caller will also want
    to know the originating pack, as well as the offset within that pack
    at which the object can be found

  - finally, it needs a way to skip over packs which are marked as kept
    in-core.

To address the first two, add a callback interface in this patch which
reports the time of each recent object, as well as a (packed_git,
off_t) pair for packed objects.

Likewise, add a new option to the packed object iterators to skip over
packs which are marked as kept in core. This option will become
implicitly tested in a future patch.

Signed-off-by: Taylor Blau <me@ttaylorr.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Taylor Blau
2022-05-20 19:17:54 -04:00
committed by Junio C Hamano
parent b757353676
commit 2fb90409b8
3 changed files with 52 additions and 10 deletions
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2
builtin/pack-objects.c
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@ -3957,7 +3957,7 @@ static void get_object_list(struct rev_info *revs, int ac, const char **av)
if (unpack_unreachable_expiration) {
revs->ignore_missing_links = 1;
if (add_unseen_recent_objects_to_traversal(revs,
unpack_unreachable_expiration))
unpack_unreachable_expiration, NULL, 0))
die(_("unable to add recent objects"));
if (prepare_revision_walk(revs))
die(_("revision walk setup failed"));