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pack-bitmap: basic noop bitmap filter infrastructure

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Currently you can't use object filters with bitmaps, but we plan to
support at least some filters with bitmaps. Let's introduce some
infrastructure that will help us do that:

  - prepare_bitmap_walk() now accepts a list_objects_filter_options
    parameter (which can be NULL for no filtering; all the current
    callers pass this)

  - we'll bail early if the filter is incompatible with bitmaps (just as
    we would if there were no bitmaps at all). Currently all filters are
    incompatible.

  - we'll filter the resulting bitmap; since there are no supported
    filters yet, this is always a noop.

There should be no behavior change yet, but we'll support some actual
filters in a future patch.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Jeff King
2020-02-14 13:22:29 -05:00
committed by Junio C Hamano
parent 4eb707ebd6
commit 6663ae0a08
5 changed files with 32 additions and 6 deletions
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2
reachable.c
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@@ -223,7 +223,7 @@ void mark_reachable_objects(struct rev_info *revs, int mark_reflog,
cp.progress = progress;
cp.count = 0;
bitmap_git = prepare_bitmap_walk(revs);
bitmap_git = prepare_bitmap_walk(revs, NULL);
if (bitmap_git) {
traverse_bitmap_commit_list(bitmap_git, revs, mark_object_seen);
free_bitmap_index(bitmap_git);