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packfile: add all_packs list

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If a repo contains a multi-pack-index, then the packed_git list
does not contain the packfiles that are covered by the multi-pack-index.
This is important for doing object lookups, abbreviations, and
approximating object count. However, there are many operations that
really want to iterate over all packfiles.

Create a new 'all_packs' linked list that contains this list, starting
with the packfiles in the multi-pack-index and then continuing along
the packed_git linked list.

Signed-off-by: Derrick Stolee <dstolee@microsoft.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Derrick Stolee
2018-08-20 16:52:02 +00:00
committed by Junio C Hamano
parent 29e2016b8f
commit 0bff5269d3
5 changed files with 36 additions and 1 deletions
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27
packfile.c
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@ -972,6 +972,9 @@ static void prepare_packed_git(struct repository *r)
prepare_packed_git_one(r, alt->path, 0);
}
rearrange_packed_git(r);
r->objects->all_packs = NULL;
prepare_packed_git_mru(r);
r->objects->packed_git_initialized = 1;
}
@ -995,6 +998,30 @@ struct multi_pack_index *get_multi_pack_index(struct repository *r)
return r->objects->multi_pack_index;
}
struct packed_git *get_all_packs(struct repository *r)
{
prepare_packed_git(r);
if (!r->objects->all_packs) {
struct packed_git *p = r->objects->packed_git;
struct multi_pack_index *m;
for (m = r->objects->multi_pack_index; m; m = m->next) {
uint32_t i;
for (i = 0; i < m->num_packs; i++) {
if (!prepare_midx_pack(m, i)) {
m->packs[i]->next = p;
p = m->packs[i];
}
}
}
r->objects->all_packs = p;
}
return r->objects->all_packs;
}
struct list_head *get_packed_git_mru(struct repository *r)
{
prepare_packed_git(r);